Detect change in underlying mounted disks (#7229)

- Current implementation was spawning renewer goroutines
without waiting for the lease duration to end. Remove vault renewer
and call vault.RenewToken directly and manage reauthentication if
lease expired.

.github/ISSUE_TEMPLATE.md

@@ -24,6 +24,10 @@
 <!--- How has this issue affected you? What are you trying to accomplish? -->
 <!--- Providing context helps us come up with a solution that is most useful in the real world -->
 
+## Regression
+<!-- Is this issue a regression? (Yes / No) -->
+<!-- If Yes, optionally please include minio version or commit id or PR# that caused this regression, if you have these details. -->
+
 ## Your Environment
 <!--- Include as many relevant details about the environment you experienced the bug in -->
 * Version used (`minio version`):

.github/PULL_REQUEST_TEMPLATE.md

@@ -7,6 +7,10 @@
 <!--- Why is this change required? What problem does it solve? -->
 <!--- If it fixes an open issue, please link to the issue here. -->
 
+## Regression
+<!-- Is this PR fixing a regression? (Yes / No) -->
+<!-- If Yes, optionally please include minio version or commit id or PR# that caused this regression, if you have these details. -->
+
 ## How Has This Been Tested?
 <!--- Please describe in detail how you tested your changes. -->
 <!--- Include details of your testing environment, and the tests you ran to -->

.gitignore

@@ -22,3 +22,5 @@ parts/
 prime/
 stage/
 .sia_temp/
+config.json
+healthcheck

.travis.yml

@@ -1,30 +1,50 @@
 go_import_path: github.com/minio/minio
-sudo: required
-
-services:
- - docker
-
-dist: trusty
 
 language: go
 
+# this ensures PRs based on a local branch are not built twice
+# the downside is that a PR targeting a different branch is not built
+# but as a workaround you can add the branch to this list
+branches:
+  only:
+    - master
+
 matrix:
   include:
     - os: linux
+      dist: trusty
+      sudo: required
       env:
         - ARCH=x86_64
-      go: 1.10.1
+        - CGO_ENABLED=0
+      go: 1.11.4
       script:
         - make
         - diff -au <(gofmt -s -d cmd) <(printf "")
         - diff -au <(gofmt -s -d pkg) <(printf "")
-        - make test GOFLAGS="-timeout 15m -race -v"
+        - for d in $(go list ./... | grep -v browser); do CGO_ENABLED=1 go test -v -race --timeout 15m "$d"; done
+        - make verifiers
+        - make crosscompile
+        - make verify
         - make coverage
-        - node --version
         - cd browser && yarn && yarn test && cd ..
+    - os: windows
+      env:
+        - ARCH=x86_64
+        - CGO_ENABLED=0
+      go: 1.11.4
+      script:
+        - go build --ldflags="$(go run buildscripts/gen-ldflags.go)" -o %GOPATH%\bin\minio.exe
+        - for d in $(go list ./... | grep -v browser); do CGO_ENABLED=1 go test -v -race --timeout 20m "$d"; done
+        - bash buildscripts/go-coverage.sh
+
+before_script:
+  # Add an IPv6 config - see the corresponding Travis issue
+  # https://github.com/travis-ci/travis-ci/issues/8361
+  - if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then sudo sh -c 'echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6'; fi
 
 before_install:
-- nvm install stable
+ - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then nvm install stable ; fi
 
 after_success:
 - bash <(curl -s https://codecov.io/bash)

CONTRIBUTING.md

@@ -68,4 +68,4 @@ To remove a dependency
 - Run `make pkg-remove PKG=foo/bar` from top-level directory
 
 ### What are the coding guidelines for Minio?
-``Minio`` is fully conformant with Golang style. Refer: [Effective Go](https://github.com/golang/go/wiki/CodeReviewComments) article from Golang project. If you observe offending code, please feel free to send a pull request or ping us on [Slack](slack.minio.io).
+``Minio`` is fully conformant with Golang style. Refer: [Effective Go](https://github.com/golang/go/wiki/CodeReviewComments) article from Golang project. If you observe offending code, please feel free to send a pull request or ping us on [Slack](https://slack.minio.io).

Dockerfile

@@ -1,34 +1,39 @@
-FROM golang:1.10.1-alpine3.7
+FROM golang:1.11.4-alpine3.7
 
 LABEL maintainer="Minio Inc <dev@minio.io>"
 
 ENV GOPATH /go
-ENV PATH $PATH:$GOPATH/bin
 ENV CGO_ENABLED 0
+
+WORKDIR /go/src/github.com/minio/
+
+RUN  \
+     apk add --no-cache git && \
+     go get -v -d github.com/minio/minio && \
+     cd /go/src/github.com/minio/minio && \
+     go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)" && \
+     go build -ldflags "-s -w" -o /usr/bin/healthcheck dockerscripts/healthcheck.go 
+
+FROM alpine:3.7
+
 ENV MINIO_UPDATE off
 ENV MINIO_ACCESS_KEY_FILE=access_key \
     MINIO_SECRET_KEY_FILE=secret_key
 
-WORKDIR /go/src/github.com/minio/
+EXPOSE 9000
 
-COPY dockerscripts/docker-entrypoint.sh dockerscripts/healthcheck.sh /usr/bin/
+COPY --from=0 /go/bin/minio /usr/bin/minio
+COPY --from=0 /usr/bin/healthcheck /usr/bin/healthcheck
+COPY dockerscripts/docker-entrypoint.sh /usr/bin/
 
 RUN  \
-     apk add --no-cache ca-certificates curl && \
-     apk add --no-cache --virtual .build-deps git && \
-     echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf && \
-     go get -v -d github.com/minio/minio && \
-     cd /go/src/github.com/minio/minio && \
-     go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)" && \
-     rm -rf /go/pkg /go/src /usr/local/go && apk del .build-deps
-
-EXPOSE 9000
+     apk add --no-cache ca-certificates 'curl>7.61.0' && \
+     echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf
 
 ENTRYPOINT ["/usr/bin/docker-entrypoint.sh"]
 
 VOLUME ["/data"]
 
-HEALTHCHECK --interval=30s --timeout=5s \
-    CMD /usr/bin/healthcheck.sh
+HEALTHCHECK --interval=1m CMD healthcheck
 
 CMD ["minio"]

Dockerfile.dev

@@ -1,27 +1,20 @@
-FROM golang:1.10.1-alpine3.7
+FROM alpine:3.7
 
 LABEL maintainer="Minio Inc <dev@minio.io>"
 
-ENV GOPATH /go
-ENV PATH $PATH:$GOPATH/bin
-ENV CGO_ENABLED 0
+COPY dockerscripts/docker-entrypoint.sh dockerscripts/healthcheck /usr/bin/
+COPY minio /usr/bin/
+
 ENV MINIO_UPDATE off
 ENV MINIO_ACCESS_KEY_FILE=access_key \
     MINIO_SECRET_KEY_FILE=secret_key
 
-WORKDIR /go/src/github.com/minio/
-
-COPY dockerscripts/docker-entrypoint.sh dockerscripts/healthcheck.sh /usr/bin/
-
-COPY . /go/src/github.com/minio/minio
-
-RUN  \
-     apk add --no-cache ca-certificates curl && \
-     apk add --no-cache --virtual .build-deps git && \
+RUN \
+     apk add --no-cache ca-certificates 'curl>7.61.0' && \
      echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf && \
-     cd /go/src/github.com/minio/minio && \
-     go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)" && \
-     rm -rf /go/pkg /go/src /usr/local/go && apk del .build-deps
+     chmod +x /usr/bin/minio  && \
+     chmod +x /usr/bin/docker-entrypoint.sh && \
+     chmod +x /usr/bin/healthcheck
 
 EXPOSE 9000
 
@@ -29,7 +22,6 @@ ENTRYPOINT ["/usr/bin/docker-entrypoint.sh"]
 
 VOLUME ["/data"]
 
-HEALTHCHECK --interval=30s --timeout=5s \
-    CMD /usr/bin/healthcheck.sh
+HEALTHCHECK --interval=1m CMD healthcheck
 
 CMD ["minio"]

Dockerfile.release

@@ -1,21 +1,34 @@
+FROM golang:1.11.4-alpine3.7
+
+ENV GOPATH /go
+ENV CGO_ENABLED 0
+
+WORKDIR /go/src/github.com/minio/
+
+RUN  \
+     apk add --no-cache git && \
+     go get -v -d github.com/minio/minio && \
+     cd /go/src/github.com/minio/minio/dockerscripts && \
+     go build -ldflags "-s -w" -o /usr/bin/healthcheck healthcheck.go
+
 FROM alpine:3.7
 
 LABEL maintainer="Minio Inc <dev@minio.io>"
 
-COPY dockerscripts/docker-entrypoint.sh dockerscripts/healthcheck.sh /usr/bin/
+COPY --from=0 /usr/bin/healthcheck /usr/bin/healthcheck
+COPY dockerscripts/docker-entrypoint.sh /usr/bin/
 
 ENV MINIO_UPDATE off
 ENV MINIO_ACCESS_KEY_FILE=access_key \
     MINIO_SECRET_KEY_FILE=secret_key
 
 RUN \
-     apk add --no-cache ca-certificates && \
-     apk add --no-cache --virtual .build-deps curl && \
+     apk add --no-cache ca-certificates 'curl>7.61.0' && \
      echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf && \
      curl https://dl.minio.io/server/minio/release/linux-amd64/minio > /usr/bin/minio && \
      chmod +x /usr/bin/minio  && \
      chmod +x /usr/bin/docker-entrypoint.sh && \
-     chmod +x /usr/bin/healthcheck.sh
+     chmod +x /usr/bin/healthcheck
 
 EXPOSE 9000
 
@@ -23,7 +36,6 @@ ENTRYPOINT ["/usr/bin/docker-entrypoint.sh"]
 
 VOLUME ["/data"]
 
-HEALTHCHECK --interval=30s --timeout=5s \
-    CMD /usr/bin/healthcheck.sh
+HEALTHCHECK --interval=1m CMD healthcheck
 
 CMD ["minio"]

Dockerfile.simpleci

@@ -0,0 +1,49 @@
+#-------------------------------------------------------------
+# Stage 1: Build and Unit tests
+#-------------------------------------------------------------
+FROM golang:1.11.4
+
+COPY . /go/src/github.com/minio/minio
+WORKDIR /go/src/github.com/minio/minio
+
+RUN apt-get update && apt-get install -y jq
+RUN make
+RUN bash -c 'diff -au <(gofmt -s -d cmd) <(printf "")'
+RUN bash -c 'diff -au <(gofmt -s -d pkg) <(printf "")'
+RUN for d in $(go list ./... | grep -v browser); do go test -v -race --timeout 15m "$d"; done
+RUN make verify
+RUN make coverage || true
+
+#-------------------------------------------------------------
+# Stage 2: Test Frontend
+#-------------------------------------------------------------
+FROM node:10.15-stretch-slim
+
+COPY browser /minio/browser
+WORKDIR /minio/browser
+
+RUN yarn
+RUN yarn test
+
+#-------------------------------------------------------------
+# Stage 3: Run Gateway Tests
+#-------------------------------------------------------------
+
+FROM ubuntu:16.04
+
+COPY --from=0 /go/src/github.com/minio/minio/minio ./minio
+COPY buildscripts/gateway-tests.sh ./gateway-tests.sh
+RUN apt-get update && apt-get install -y git wget jq curl dnsmasq
+
+RUN wget https://dl.google.com/go/go1.11.4.linux-amd64.tar.gz && \
+	tar -C /usr/local -xzf go1.11.4.linux-amd64.tar.gz
+
+ENV DEBIAN_FRONTEND noninteractive
+ENV LANG C.UTF-8
+ENV GOROOT /usr/local/go
+
+RUN mkdir -p /go
+ENV GOPATH /go
+ENV PATH $GOPATH/bin:$GOROOT/bin:$PATH
+
+RUN ./gateway-tests.sh

Makefile

@@ -13,41 +13,33 @@ checks:
 	@(env bash $(PWD)/buildscripts/checkgopath.sh)
 
 getdeps:
-	@echo "Installing golint" && go get -u github.com/golang/lint/golint
-	@echo "Installing gocyclo" && go get -u github.com/fzipp/gocyclo
-	@echo "Installing deadcode" && go get -u github.com/remyoudompheng/go-misc/deadcode
+	@echo "Installing golint" && go get -u golang.org/x/lint/golint
+	@echo "Installing staticcheck" && go get -u honnef.co/go/tools/...
 	@echo "Installing misspell" && go get -u github.com/client9/misspell/cmd/misspell
-	@echo "Installing ineffassign" && go get -u github.com/gordonklaus/ineffassign
 
-verifiers: getdeps vet fmt lint cyclo deadcode spelling
+crosscompile:
+	@(env bash $(PWD)/buildscripts/cross-compile.sh)
+
+verifiers: getdeps vet fmt lint staticcheck spelling
 
 vet:
 	@echo "Running $@"
-	@go tool vet -atomic -bool -copylocks -nilfunc -printf -shadow -rangeloops -unreachable -unsafeptr -unusedresult cmd
-	@go tool vet -atomic -bool -copylocks -nilfunc -printf -shadow -rangeloops -unreachable -unsafeptr -unusedresult pkg
+	@go vet github.com/minio/minio/...
 
 fmt:
 	@echo "Running $@"
-	@gofmt -d cmd
-	@gofmt -d pkg
+	@gofmt -d cmd/
+	@gofmt -d pkg/
 
 lint:
 	@echo "Running $@"
-	@${GOPATH}/bin/golint -set_exit_status github.com/minio/minio/cmd...
-	@${GOPATH}/bin/golint -set_exit_status github.com/minio/minio/pkg...
+	@${GOPATH}/bin/golint -set_exit_status github.com/minio/minio/cmd/...
+	@${GOPATH}/bin/golint -set_exit_status github.com/minio/minio/pkg/...
 
-ineffassign:
+staticcheck:
 	@echo "Running $@"
-	@${GOPATH}/bin/ineffassign .
-
-cyclo:
-	@echo "Running $@"
-	@${GOPATH}/bin/gocyclo -over 100 cmd
-	@${GOPATH}/bin/gocyclo -over 100 pkg
-
-deadcode:
-	@echo "Running $@"
-	@${GOPATH}/bin/deadcode -test $(shell go list ./...) || true
+	@${GOPATH}/bin/staticcheck github.com/minio/minio/cmd/...
+	@${GOPATH}/bin/staticcheck github.com/minio/minio/pkg/...
 
 spelling:
 	@${GOPATH}/bin/misspell -locale US -error `find cmd/`
@@ -60,7 +52,9 @@ spelling:
 check: test
 test: verifiers build
 	@echo "Running unit tests"
-	@go test $(GOFLAGS) -tags kqueue ./...
+	@CGO_ENABLED=0 go test -tags kqueue ./...
+
+verify: build
 	@echo "Verifying build"
 	@(env bash $(PWD)/buildscripts/verify-build.sh)
 
@@ -71,7 +65,11 @@ coverage: build
 # Builds minio locally.
 build: checks
 	@echo "Building minio binary to './minio'"
-	@CGO_ENABLED=0 go build -tags kqueue --ldflags $(BUILD_LDFLAGS) -o $(PWD)/minio
+	@GOFLAGS="" CGO_ENABLED=0 go build -tags kqueue --ldflags $(BUILD_LDFLAGS) -o $(PWD)/minio
+	@GOFLAGS="" CGO_ENABLED=0 go build --ldflags="-s -w" -o $(PWD)/dockerscripts/healthcheck $(PWD)/dockerscripts/healthcheck.go
+
+docker: build
+	@docker build -t $(TAG) . -f Dockerfile.dev
 
 pkg-add:
 	@echo "Adding new package $(PKG)"
@@ -97,6 +95,7 @@ install: build
 clean:
 	@echo "Cleaning up all the generated files"
 	@find . -name '*.test' | xargs rm -fv
+	@find . -name '*~' | xargs rm -fv
 	@rm -rvf minio
 	@rm -rvf build
 	@rm -rvf release

README.md

@@ -17,7 +17,7 @@ docker run -p 9000:9000 minio/minio server /data
 docker pull minio/minio:edge
 docker run -p 9000:9000 minio/minio:edge server /data
 ```
-Please visit Minio Docker quickstart guide for more [here](https://docs.minio.io/docs/minio-docker-quickstart-guide)
+Note: Docker will not display the autogenerated keys unless you start the container with the `-it`(interactive TTY) argument. Generally, it is not recommended to use autogenerated keys with containers. Please visit Minio Docker quickstart guide for more information [here](https://docs.minio.io/docs/minio-docker-quickstart-guide)
 
 ## macOS
 ### Homebrew
@@ -53,6 +53,15 @@ chmod +x minio
 ./minio server /data
 ```
 
+| Platform| Architecture | URL|
+| ----------| -------- | ------|
+|GNU/Linux|ppc64le|https://dl.minio.io/server/minio/release/linux-ppc64le/minio |
+```sh
+wget https://dl.minio.io/server/minio/release/linux-ppc64le/minio
+chmod +x minio
+./minio server /data
+```
+
 ## Microsoft Windows
 ### Binary Download
 | Platform| Architecture | URL|

appveyor.yml

@@ -1,55 +0,0 @@
-# version format
-version: "{build}"
-
-# Operating system (build VM template)
-os: Windows Server 2012 R2
-
-# Platform.
-platform: x64
-
-clone_folder: c:\gopath\src\github.com\minio\minio
-
-# Environment variables
-environment:
-  GOPATH: c:\gopath
-  GOROOT: c:\go
-
-# scripts that run after cloning repository
-install:
-  - set PATH=%GOPATH%\bin;%GOROOT%\bin;%PATH%
-  - go version
-  - go env
-  - python --version
-
-# To run your custom scripts instead of automatic MSBuild
-build_script:
-  # Compile
-  # We need to disable firewall - https://github.com/appveyor/ci/issues/1579#issuecomment-309830648
-  - ps: Disable-NetFirewallRule -DisplayName 'File and Printer Sharing (SMB-Out)'
-  - appveyor AddCompilationMessage "Starting Compile"
-  - cd c:\gopath\src\github.com\minio\minio
-  - go run buildscripts/gen-ldflags.go > temp.txt
-  - set /p BUILD_LDFLAGS=<temp.txt
-  - go build -ldflags="%BUILD_LDFLAGS%" -o %GOPATH%\bin\minio.exe
-  - appveyor AddCompilationMessage "Compile Success"
-
-# To run your custom scripts instead of automatic tests
-test_script:
-  # Unit tests
-  - ps: Add-AppveyorTest "Unit Tests" -Outcome Running
-  - mkdir build\coverage
-  - for /f "" %%G in ('go list github.com/minio/minio/... ^| find /i /v "browser/"') do ( go test -v -timeout 20m -race %%G )
-  - go test -v -timeout 20m -coverprofile=build\coverage\coverage.txt -covermode=atomic github.com/minio/minio/cmd
-  - ps: Update-AppveyorTest "Unit Tests" -Outcome Passed
-
-after_test:
-  - go tool cover -html=build\coverage\coverage.txt -o build\coverage\coverage.html
-  - ps: Push-AppveyorArtifact build\coverage\coverage.txt
-  - ps: Push-AppveyorArtifact build\coverage\coverage.html
-  # Upload coverage report.
-  - "SET PATH=C:\\Python34;C:\\Python34\\Scripts;%PATH%"
-  - pip install codecov
-  - codecov -X gcov -f "build\coverage\coverage.txt"
-
-# to disable deployment
-deploy: off

browser/app/index.html

@@ -5,13 +5,13 @@
         <meta charset="UTF-8">
         <meta name="viewport" content="width=device-width, initial-scale=1">
         <title>Minio Browser</title>
-        <link rel="stylesheet" href="loader.css" type="text/css">
+        <link rel="stylesheet" href="/minio/loader.css" type="text/css">
     </head>
 
     <body>
         <div class="page-load">
             <div class="pl-inner">
-                <img src="logo.svg" alt="">
+                <img src="/minio/logo.svg" alt="">
             </div>
         </div>
         <div id="root"></div>
@@ -51,6 +51,6 @@
         <![endif]-->
 
         <script>currentUiVersion = 'MINIO_UI_VERSION'</script>
-        <script src="index_bundle.js"></script>
+        <script src="/minio/index_bundle.js"></script>
     </body>
 </html>

browser/app/js/alert/actions.js

@@ -22,7 +22,7 @@ export let alertId = 0
 export const set = alert => {
   const id = alertId++
   return (dispatch, getState) => {
-    if (alert.type !== "danger") {
+    if (alert.type !== "danger" || alert.autoClear) {
       setTimeout(() => {
         dispatch({
           type: CLEAR,

browser/app/js/buckets/BucketList.js

@@ -67,8 +67,12 @@ const mapDispatchToProps = dispatch => {
   return {
     fetchBuckets: () => dispatch(actionsBuckets.fetchBuckets()),
     setBucketList: buckets => dispatch(actionsBuckets.setList(buckets)),
-    selectBucket: bucket => dispatch(actionsBuckets.selectBucket(bucket))
+    selectBucket: (bucket, prefix) =>
+      dispatch(actionsBuckets.selectBucket(bucket, prefix))
   }
 }
 
-export default connect(mapStateToProps, mapDispatchToProps)(BucketList)
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(BucketList)

browser/app/js/buckets/Policy.js

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { READ_ONLY, WRITE_ONLY, READ_WRITE } from '../constants'
+import { READ_ONLY, WRITE_ONLY, READ_WRITE, NONE } from '../constants'
 
 import React from "react"
 import { connect } from "react-redux"
@@ -42,37 +42,40 @@ export class Policy extends React.Component {
   render() {
     const {policy, prefix} = this.props
     let newPrefix = prefix
-
     if (newPrefix === '')
       newPrefix = '*'
 
-    return (
-      <div className="pmb-list">
-        <div className="pmbl-item">
-          { newPrefix }
+    if (policy === NONE) {
+      return <noscript />
+    } else {
+      return (
+        <div className="pmb-list">
+          <div className="pmbl-item">
+            { newPrefix }
+          </div>
+          <div className="pmbl-item">
+            <select className="form-control"
+              disabled
+              value={ policy }>
+              <option value={ READ_ONLY }>
+                Read Only
+              </option>
+              <option value={ WRITE_ONLY }>
+                Write Only
+              </option>
+              <option value={ READ_WRITE }>
+                Read and Write
+              </option>
+            </select>
+          </div>
+          <div className="pmbl-item">
+            <button className="btn btn-block btn-danger" onClick={ this.removePolicy.bind(this) }>
+              Remove
+            </button>
+          </div>
         </div>
-        <div className="pmbl-item">
-          <select className="form-control"
-            disabled
-            value={ policy }>
-            <option value={ READ_ONLY }>
-              Read Only
-            </option>
-            <option value={ WRITE_ONLY }>
-              Write Only
-            </option>
-            <option value={ READ_WRITE }>
-              Read and Write
-            </option>
-          </select>
-        </div>
-        <div className="pmbl-item">
-          <button className="btn btn-block btn-danger" onClick={ this.removePolicy.bind(this) }>
-            Remove
-          </button>
-        </div>
-      </div>
-    )
+      )
+    }
   }
 }
 

browser/app/js/buckets/__tests__/Policy.test.js

@@ -17,7 +17,7 @@
 import React from "react"
 import { shallow, mount } from "enzyme"
 import { Policy } from "../Policy"
-import { READ_ONLY, WRITE_ONLY, READ_WRITE } from "../../constants"
+import { READ_ONLY, WRITE_ONLY, READ_WRITE, NONE } from "../../constants"
 import web from "../../web"
 
 jest.mock("../../web", () => ({
@@ -31,6 +31,11 @@ describe("Policy", () => {
     shallow(<Policy currentBucket={"bucket"} prefix={"foo"} policy={READ_ONLY} />)
   })
 
+  it("should not render when policy is listed as 'none'", () => {
+    const wrapper = shallow(<Policy currentBucket={"bucket"} prefix={"foo"} policy={NONE} />)
+    expect(wrapper.find(".pmb-list").length).toBe(0)
+  })
+
   it("should call web.setBucketPolicy and fetchPolicies on submit", () => {
     const fetchPolicies = jest.fn()
     const wrapper = shallow(

browser/app/js/constants.js

@@ -23,6 +23,7 @@ export const minioBrowserPrefix = p.slice(0, p.indexOf("/", 1))
 export const READ_ONLY = "readonly"
 export const WRITE_ONLY = "writeonly"
 export const READ_WRITE = "readwrite"
+export const NONE = "none"
 
 export const SHARE_OBJECT_EXPIRY_DAYS = 5
 export const SHARE_OBJECT_EXPIRY_HOURS = 0

browser/app/js/objects/ObjectActions.js

@@ -57,7 +57,7 @@ export class ObjectActions extends React.Component {
     })
   }
   render() {
-    const { object, showShareObjectModal } = this.props
+    const { object, showShareObjectModal, shareObjectName } = this.props
     return (
       <Dropdown id={`obj-actions-${object.name}`}>
         <Dropdown.Toggle noCaret className="fia-toggle" />
@@ -77,7 +77,8 @@ export class ObjectActions extends React.Component {
             <i className="fa fa-trash" />
           </a>
         </Dropdown.Menu>
-        {showShareObjectModal && <ShareObjectModal object={object} />}
+        {(showShareObjectModal && shareObjectName === object.name) &&
+          <ShareObjectModal object={object} />}
         {this.state.showDeleteConfirmation && (
           <DeleteObjectConfirmModal
             deleteObject={this.deleteObject.bind(this)}
@@ -92,7 +93,8 @@ export class ObjectActions extends React.Component {
 const mapStateToProps = (state, ownProps) => {
   return {
     object: ownProps.object,
-    showShareObjectModal: state.objects.shareObject.show
+    showShareObjectModal: state.objects.shareObject.show,
+    shareObjectName: state.objects.shareObject.object
   }
 }
 

browser/app/js/objects/__tests__/ObjectActions.test.js

@@ -88,8 +88,21 @@ describe("ObjectActions", () => {
         object={{ name: "obj1" }}
         currentPrefix={"pre1/"}
         showShareObjectModal={true}
+        shareObjectName={"obj1"}
       />
     )
     expect(wrapper.find("Connect(ShareObjectModal)").length).toBe(1)
   })
+
+  it("shouldn't render ShareObjectModal when the names of the objects don't match", () => {
+    const wrapper = shallow(
+      <ObjectActions
+        object={{ name: "obj1" }}
+        currentPrefix={"pre1/"}
+        showShareObjectModal={true}
+        shareObjectName={"obj2"}
+      />
+    )
+    expect(wrapper.find("Connect(ShareObjectModal)").length).toBe(0)
+  })
 })

browser/app/js/objects/__tests__/actions.test.js

@@ -19,16 +19,29 @@ import thunk from "redux-thunk"
 import * as actionsObjects from "../actions"
 import * as alertActions from "../../alert/actions"
 import { minioBrowserPrefix } from "../../constants"
+import history from "../../history"
 
 jest.mock("../../web", () => ({
-  LoggedIn: jest.fn(() => true).mockReturnValueOnce(false),
-  ListObjects: jest.fn(() => {
-    return Promise.resolve({
-      objects: [{ name: "test1" }, { name: "test2" }],
-      istruncated: false,
-      nextmarker: "test2",
-      writable: false
-    })
+  LoggedIn: jest
+    .fn(() => true)
+    .mockReturnValueOnce(true)
+    .mockReturnValueOnce(false)
+    .mockReturnValueOnce(true)
+    .mockReturnValueOnce(true)
+    .mockReturnValueOnce(false),
+  ListObjects: jest.fn(({ bucketName }) => {
+    if (bucketName === "test-deny") {
+      return Promise.reject({
+        message: "listobjects is denied"
+      })
+    } else {
+      return Promise.resolve({
+        objects: [{ name: "test1" }, { name: "test2" }],
+        istruncated: false,
+        nextmarker: "test2",
+        writable: false
+      })
+    }
   }),
   RemoveObject: jest.fn(({ bucketName, objects }) => {
     if (!bucketName) {
@@ -160,6 +173,41 @@ describe("Objects actions", () => {
     })
   })
 
+  it("creates objects/RESET_LIST after failing to fetch the objects from bucket with ListObjects denied for LoggedIn users", () => {
+    const store = mockStore({
+      buckets: { currentBucket: "test-deny" },
+      objects: { currentPrefix: "" }
+    })
+    const expectedActions = [
+      {
+        type: "alert/SET",
+        alert: {
+          type: "danger",
+          message: "listobjects is denied",
+          id: alertActions.alertId,
+          autoClear: true
+        }
+      },
+      {
+        type: "object/RESET_LIST"
+      }
+    ]
+    return store.dispatch(actionsObjects.fetchObjects()).then(() => {
+      const actions = store.getActions()
+      expect(actions).toEqual(expectedActions)
+    })
+  })
+
+  it("redirect to login after failing to fetch the objects from bucket for non-LoggedIn users", () => {
+    const store = mockStore({
+      buckets: { currentBucket: "test-deny" },
+      objects: { currentPrefix: "" }
+    })
+    return store.dispatch(actionsObjects.fetchObjects()).then(() => {
+      expect(history.location.pathname.endsWith("/login")).toBeTruthy()
+    })
+  })
+
   it("creates objects/SET_SORT_BY and objects/SET_SORT_ORDER when sortObjects is called", () => {
     const store = mockStore({
       objects: {
@@ -244,7 +292,11 @@ describe("Objects actions", () => {
     const expectedActions = [
       {
         type: "alert/SET",
-        alert: { type: "danger", message: "Invalid bucket", id: 0 }
+        alert: {
+          type: "danger",
+          message: "Invalid bucket",
+          id: alertActions.alertId
+        }
       }
     ]
     return store.dispatch(actionsObjects.deleteObject("obj1")).then(() => {
@@ -355,7 +407,7 @@ describe("Objects actions", () => {
       store.dispatch(actionsObjects.downloadObject("obj1"))
       const url = `${
         window.location.origin
-      }${minioBrowserPrefix}/download/bk1/${encodeURI("pre1/obj1")}?token=''`
+      }${minioBrowserPrefix}/download/bk1/${encodeURI("pre1/obj1")}?token=`
       expect(setLocation).toHaveBeenCalledWith(url)
     })
 

browser/app/js/objects/actions.js

@@ -16,17 +16,15 @@
 
 import web from "../web"
 import history from "../history"
-import {
-  sortObjectsByName,
-  sortObjectsBySize,
-  sortObjectsByDate
-} from "../utils"
+import { sortObjectsByName, sortObjectsBySize, sortObjectsByDate } from "../utils"
 import { getCurrentBucket } from "../buckets/selectors"
 import { getCurrentPrefix, getCheckedList } from "./selectors"
 import * as alertActions from "../alert/actions"
+import * as bucketActions from "../buckets/actions"
 import { minioBrowserPrefix } from "../constants"
 
 export const SET_LIST = "objects/SET_LIST"
+export const RESET_LIST = "object/RESET_LIST"
 export const APPEND_LIST = "objects/APPEND_LIST"
 export const REMOVE = "objects/REMOVE"
 export const SET_SORT_BY = "objects/SET_SORT_BY"
@@ -45,6 +43,10 @@ export const setList = (objects, marker, isTruncated) => ({
   isTruncated
 })
 
+export const resetList = () => ({
+  type: RESET_LIST
+})
+
 export const appendList = (objects, marker, isTruncated) => ({
   type: APPEND_LIST,
   objects,
@@ -54,47 +56,54 @@ export const appendList = (objects, marker, isTruncated) => ({
 
 export const fetchObjects = append => {
   return function(dispatch, getState) {
-    const {
-      buckets: { currentBucket },
-      objects: { currentPrefix, marker }
-    } = getState()
+    const {buckets: {currentBucket}, objects: {currentPrefix, marker}} = getState()
     if (currentBucket) {
       return web
-      .ListObjects({
-        bucketName: currentBucket,
-        prefix: currentPrefix,
-        marker: append ? marker : ""
-      })
-      .then(res => {
-        let objects = []
-        if (res.objects) {
-          objects = res.objects.map(object => {
-            return {
-              ...object,
-              name: object.name.replace(currentPrefix, "")
-            }
-          })
-        }
-        if (append) {
-          dispatch(appendList(objects, res.nextmarker, res.istruncated))
-        } else {
-          dispatch(setList(objects, res.nextmarker, res.istruncated))
-          dispatch(setSortBy(""))
-          dispatch(setSortOrder(false))
-        }
-        dispatch(setPrefixWritable(res.writable))
-      })
-      .catch(err => {
-        dispatch(alertActions.set({ type: "danger", message: err.message }))
-        history.push("/login")
-      })
-    } 
+        .ListObjects({
+          bucketName: currentBucket,
+          prefix: currentPrefix,
+          marker: append ? marker : ""
+        })
+        .then(res => {
+          let objects = []
+          if (res.objects) {
+            objects = res.objects.map(object => {
+              return {
+                ...object,
+                name: object.name.replace(currentPrefix, "")
+              }
+            })
+          }
+          if (append) {
+            dispatch(appendList(objects, res.nextmarker, res.istruncated))
+          } else {
+            dispatch(setList(objects, res.nextmarker, res.istruncated))
+            dispatch(setSortBy(""))
+            dispatch(setSortOrder(false))
+          }
+          dispatch(setPrefixWritable(res.writable))
+        })
+        .catch(err => {
+          if (web.LoggedIn()) {
+            dispatch(
+              alertActions.set({
+                type: "danger",
+                message: err.message,
+                autoClear: true
+              })
+            )
+            dispatch(resetList())
+          } else {
+            history.push("/login")
+          }
+        })
+    }
   }
 }
 
 export const sortObjects = sortBy => {
   return function(dispatch, getState) {
-    const { objects } = getState()
+    const {objects} = getState()
     const sortOrder = objects.sortBy == sortBy ? !objects.sortOrder : true
     dispatch(setSortBy(sortBy))
     dispatch(setSortOrder(sortOrder))
@@ -194,30 +203,39 @@ export const shareObject = (object, days, hours, minutes) => {
     const currentPrefix = getCurrentPrefix(getState())
     const objectName = `${currentPrefix}${object}`
     const expiry = days * 24 * 60 * 60 + hours * 60 * 60 + minutes * 60
-    return web
-      .PresignedGet({
-        host: location.host,
-        bucket: currentBucket,
-        object: objectName,
-        expiry
-      })
-      .then(obj => {
-        dispatch(showShareObject(object, obj.url))
-        dispatch(
-          alertActions.set({
-            type: "success",
-            message: `Object shared. Expires in ${days} days ${hours} hours ${minutes} minutes`
-          })
-        )
-      })
-      .catch(err => {
-        dispatch(
-          alertActions.set({
-            type: "danger",
-            message: err.message
-          })
-        )
-      })
+    if (web.LoggedIn()) {
+      return web
+        .PresignedGet({
+          host: location.host,
+          bucket: currentBucket,
+          object: objectName
+        })
+        .then(obj => {
+          dispatch(showShareObject(object, obj.url))
+          dispatch(
+            alertActions.set({
+              type: "success",
+              message: `Object shared. Expires in ${days} days ${hours} hours ${minutes} minutes`
+            })
+          )
+        })
+        .catch(err => {
+          dispatch(
+            alertActions.set({
+              type: "danger",
+              message: err.message
+            })
+          )
+        })
+    } else {
+      dispatch(showShareObject(object, `${location.host}` + '/' + `${currentBucket}` + '/' + encodeURI(objectName)))
+      dispatch(
+        alertActions.set({
+          type: "success",
+          message: `Object shared.`
+        })
+      )
+    }
   }
 }
 
@@ -263,7 +281,7 @@ export const downloadObject = object => {
     } else {
       const url = `${
         window.location.origin
-      }${minioBrowserPrefix}/download/${currentBucket}/${encObjectName}?token=''`
+      }${minioBrowserPrefix}/download/${currentBucket}/${encObjectName}?token=`
       window.location = url
     }
   }
@@ -292,7 +310,7 @@ export const downloadCheckedObjects = () => {
       objects: getCheckedList(state)
     }
     if (!web.LoggedIn()) {
-      const requestUrl = location.origin + "/minio/zip?token=''"
+      const requestUrl = location.origin + "/minio/zip?token="
       downloadZip(requestUrl, req, dispatch)
     } else {
       return web
@@ -303,14 +321,13 @@ export const downloadCheckedObjects = () => {
           }${minioBrowserPrefix}/zip?token=${res.token}`
           downloadZip(requestUrl, req, dispatch)
         })
-        .catch(err =>
-          dispatch(
-            alertActions.set({
-              type: "danger",
-              message: err.message
-            })
-          )
+        .catch(err => dispatch(
+          alertActions.set({
+            type: "danger",
+            message: err.message
+          })
         )
+      )
     }
   }
 }
@@ -333,8 +350,7 @@ const downloadZip = (url, req, dispatch) => {
       var separator = req.prefix.length > 1 ? "-" : ""
 
       anchor.href = blobUrl
-      anchor.download =
-        req.bucketName + separator + req.prefix.slice(0, -1) + ".zip"
+      anchor.download = req.bucketName + separator + req.prefix.slice(0, -1) + ".zip"
 
       anchor.click()
       window.URL.revokeObjectURL(blobUrl)

browser/app/js/objects/reducer.js

@@ -50,6 +50,13 @@ export default (
         marker: action.marker,
         isTruncated: action.isTruncated
       }
+    case actionsObjects.RESET_LIST:
+      return {
+        ...state,
+        list: [],
+        marker: "",
+        isTruncated: false
+      }
     case actionsObjects.APPEND_LIST:
       return {
         ...state,

browser/app/less/inc/list.less

@@ -109,7 +109,15 @@ div.fesl-row {
     /*--------------------------
         Icons
     ----------------------------*/
-    &[data-type=folder] { .list-type(#a1d6dd, '\f114'); }
+    &[data-type=folder] {
+        .list-type(#a1d6dd, '\f114');
+
+        .fesl-item-name {
+            a {
+                cursor: pointer;
+            }
+        }
+    }
     &[data-type=pdf] {.list-type(#fa7775, '\f1c1'); }
     &[data-type=zip] { .list-type(#427089, '\f1c6'); }
     &[data-type=audio] { .list-type(#009688, '\f1c7'); }

browser/build.js

@@ -70,9 +70,9 @@ async.waterfall([
       commitId = stdout.replace('\n', '')
       if (commitId.length !== 40) throw new Error('commitId invalid : ' + commitId)
       assetsFileName = 'ui-assets.go';
-      var cmd = 'go-bindata-assetfs -pkg browser -nocompress=true production/...'
+      var cmd = 'go-bindata-assetfs -o bindata_assetfs.go -pkg browser -nocompress=true production/...'
       if (!isProduction) {
-        cmd = 'go-bindata-assetfs -pkg browser -nocompress=true dev/...'
+        cmd = 'go-bindata-assetfs -o bindata_assetfs.go -pkg browser -nocompress=true dev/...'
       }
       console.log('Running', cmd)
       exec(cmd, cb)

browser/package.json

@@ -13,8 +13,7 @@
     "setupTestFrameworkScriptFile": "./app/js/jest/setup.js",
     "testURL": "https://localhost:8080",
     "moduleNameMapper": {
-      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$":
-        "<rootDir>/app/js/jest/__mocks__/fileMock.js",
+      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/app/js/jest/__mocks__/fileMock.js",
       "\\.(css|scss)$": "identity-obj-proxy"
     }
   },
@@ -40,29 +39,31 @@
     "babel-preset-es2015": "^6.14.0",
     "babel-preset-react": "^6.11.1",
     "babel-register": "^6.14.0",
-    "copy-webpack-plugin": "^0.3.3",
+    "copy-webpack-plugin": "^4.6.0",
     "css-loader": "^0.23.1",
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-16": "^1.1.1",
     "esformatter": "^0.10.0",
     "esformatter-jsx": "^7.4.1",
     "esformatter-jsx-ignore": "^1.0.6",
-    "html-webpack-plugin": "^2.30.1",
+    "html-webpack-plugin": "^3.2.0",
     "jest": "^22.1.4",
     "jest-enzyme": "^4.0.2",
     "json-loader": "^0.5.4",
-    "less": "^2.7.1",
-    "less-loader": "^2.2.3",
-    "purifycss-webpack-plugin": "^2.0.3",
+    "less": "^3.9.0",
+    "less-loader": "^4.1.0",
+    "purgecss-webpack-plugin": "^1.4.0",
     "style-loader": "^0.13.1",
     "url-loader": "^0.5.7",
-    "webpack-dev-server": "^2.11.1"
+    "webpack-cli": "^3.2.0",
+    "webpack-dev-server": "^3.1.14"
   },
   "dependencies": {
     "bootstrap": "^3.3.6",
     "classnames": "^2.2.3",
     "expect": "^1.20.2",
     "font-awesome": "^4.7.0",
+    "glob-all": "^3.1.0",
     "history": "^4.7.2",
     "humanize": "0.0.9",
     "identity-obj-proxy": "^3.0.0",
@@ -89,6 +90,6 @@
     "reselect": "^3.0.1",
     "superagent": "^3.8.2",
     "superagent-es6-promise": "^1.0.0",
-    "webpack": "^3.10.0"
+    "webpack": "^4.28.3"
   }
 }

browser/webpack.config.js

@@ -16,11 +16,13 @@
 
 var webpack = require('webpack')
 var path = require('path')
+var glob = require('glob-all')
 var CopyWebpackPlugin = require('copy-webpack-plugin')
-var purify = require("purifycss-webpack-plugin")
+var PurgecssPlugin = require('purgecss-webpack-plugin')
 
 var exports = {
   context: __dirname,
+  mode: 'development',
   entry: [
     path.resolve(__dirname, 'app/index.js')
   ],
@@ -99,12 +101,11 @@ var exports = {
       {from: 'app/index.html'}
     ]),
     new webpack.ContextReplacementPlugin(/moment[\\\/]locale$/, /^\.\/(en)$/),
-    new purify({
-        basePath: __dirname,
-        paths: [
-            "app/index.html",
-            "app/js/*.js"
-        ]
+    new PurgecssPlugin({
+      paths: glob.sync([
+        path.join(__dirname, 'app/index.html'),
+        path.join(__dirname, 'app/js/*.js')
+      ])
     })
   ]
 }

browser/webpack.production.config.js

@@ -16,11 +16,13 @@
 
 var webpack = require('webpack')
 var path = require('path')
+var glob = require('glob-all')
 var CopyWebpackPlugin = require('copy-webpack-plugin')
-var purify = require("purifycss-webpack-plugin")
+var PurgecssPlugin = require('purgecss-webpack-plugin')
 
 var exports = {
   context: __dirname,
+  mode: 'production',
   entry: [
     path.resolve(__dirname, 'app/index.js')
   ],
@@ -74,16 +76,12 @@ var exports = {
       {from: 'app/img/logo.svg'},
       {from: 'app/index.html'}
     ]),
-    new webpack.DefinePlugin({
-        'process.env.NODE_ENV': '"production"'
-    }),
     new webpack.ContextReplacementPlugin(/moment[\\\/]locale$/, /^\.\/(en)$/),
-    new purify({
-        basePath: __dirname,
-        paths: [
-            "app/index.html",
-            "app/js/*.js"
-        ]
+    new PurgecssPlugin({
+      paths: glob.sync([
+        path.join(__dirname, 'app/index.html'),
+        path.join(__dirname, 'app/js/*.js')
+      ])
     })
   ]
 }

buildscripts/checkdeps.sh

@@ -89,11 +89,11 @@ check_minimum_version() {
 
 assert_is_supported_arch() {
     case "${ARCH}" in
-        x86_64 | amd64 | aarch64 | ppc64le | arm* )
+        x86_64 | amd64 | aarch64 | ppc64le | arm* | s390x )
             return
             ;;
         *)
-            echo "Arch '${ARCH}' is not supported. Supported Arch: [x86_64, amd64, aarch64, ppc64le, arm*]"
+            echo "Arch '${ARCH}' is not supported. Supported Arch: [x86_64, amd64, aarch64, ppc64le, arm*, s390x]"
             exit 1
     esac
 }

buildscripts/cross-compile.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# Enable tracing if set.
+[ -n "$BASH_XTRACEFD" ] && set -ex
+
+function _init() {
+    ## All binaries are static make sure to disable CGO.
+    export CGO_ENABLED=0
+
+    ## List of architectures and OS to test coss compilation.
+    SUPPORTED_OSARCH="linux/ppc64le linux/arm64 linux/s390x darwin/amd64 freebsd/amd64"
+}
+
+function _build_and_sign() {
+    local osarch=$1
+    IFS=/ read -r -a arr <<<"$osarch"
+    os="${arr[0]}"
+    arch="${arr[1]}"
+    package=$(go list -f '{{.ImportPath}}')
+    printf -- "--> %15s:%s\n" "${osarch}" "${package}"
+
+    # Go build to build the binary.
+    export GOOS=$os
+    export GOARCH=$arch
+    go build -tags kqueue -o /dev/null
+}
+
+function main() {
+    echo "Testing builds for OS/Arch: ${SUPPORTED_OSARCH}"
+    for each_osarch in ${SUPPORTED_OSARCH}; do
+        _build_and_sign "${each_osarch}"
+    done
+}
+
+_init && main "$@"

buildscripts/gateway-tests.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+#
+# Minio Cloud Storage, (C) 2019 Minio, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+set -e
+set -E
+set -o pipefail
+
+export SERVER_ENDPOINT=127.0.0.1:24240
+export ENABLE_HTTPS=0
+export ACCESS_KEY=minio
+export SECRET_KEY=minio123
+export MINIO_ACCESS_KEY=minio
+export MINIO_SECRET_KEY=minio123
+export AWS_ACCESS_KEY_ID=minio
+export AWS_SECRET_ACCESS_KEY=minio123
+
+trap "cat server.log;cat gateway.log" SIGHUP SIGINT SIGTERM
+
+./minio --quiet --json server data --address 127.0.0.1:24242 > server.log &
+sleep 3
+./minio --quiet --json gateway s3 http://127.0.0.1:24242 --address 127.0.0.1:24240 > gateway.log &
+sleep 3
+
+mkdir -p /mint
+git clone https://github.com/minio/mint /mint
+cd /mint
+
+export MINT_ROOT_DIR=${MINT_ROOT_DIR:-/mint}
+export MINT_RUN_CORE_DIR="$MINT_ROOT_DIR/run/core"
+export MINT_RUN_SECURITY_DIR="$MINT_ROOT_DIR/run/security"
+export WGET="wget --quiet --no-check-certificate"
+
+go get github.com/go-ini/ini
+
+./create-data-files.sh
+./preinstall.sh
+
+# install mint app packages
+for pkg in "build"/*/install.sh; do
+    echo "Running $pkg"
+    $pkg
+done
+
+./postinstall.sh
+
+/mint/entrypoint.sh || cat server.log gateway.log fail

buildscripts/go-coverage.sh

@@ -4,7 +4,7 @@ set -e
 echo "" > coverage.txt
 
 for d in $(go list ./... | grep -v browser); do
-    go test -coverprofile=profile.out -covermode=atomic "$d"
+    CGO_ENABLED=0 go test -v -coverprofile=profile.out -covermode=atomic "$d"
     if [ -f profile.out ]; then
         cat profile.out >> coverage.txt
         rm profile.out

buildscripts/verify-build.sh

@@ -68,9 +68,41 @@ function start_minio_erasure_sets()
     echo "$minio_pid"
 }
 
+function start_minio_dist_erasure_sets_ipv6()
+{
+    declare -a minio_pids
+    export MINIO_ACCESS_KEY=$ACCESS_KEY
+    export MINIO_SECRET_KEY=$SECRET_KEY
+    "${MINIO[@]}" server --address="[::1]:9000" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9000.log" 2>&1 &
+    minio_pids[0]=$!
+    "${MINIO[@]}" server --address="[::1]:9001" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9001.log" 2>&1 &
+    minio_pids[1]=$!
+    "${MINIO[@]}" server --address="[::1]:9002" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9002.log" 2>&1 &
+    minio_pids[2]=$!
+    "${MINIO[@]}" server --address="[::1]:9003" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9003.log" 2>&1 &
+    minio_pids[3]=$!
+    "${MINIO[@]}" server --address="[::1]:9004" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9004.log" 2>&1 &
+    minio_pids[4]=$!
+    "${MINIO[@]}" server --address="[::1]:9005" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9005.log" 2>&1 &
+    minio_pids[5]=$!
+    "${MINIO[@]}" server --address="[::1]:9006" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9006.log" 2>&1 &
+    minio_pids[6]=$!
+    "${MINIO[@]}" server --address="[::1]:9007" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9007.log" 2>&1 &
+    minio_pids[7]=$!
+    "${MINIO[@]}" server --address="[::1]:9008" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9008.log" 2>&1 &
+    minio_pids[8]=$!
+    "${MINIO[@]}" server --address="[::1]:9009" "http://[::1]:9000${WORK_DIR}/dist-disk-sets1" "http://[::1]:9001${WORK_DIR}/dist-disk-sets2" "http://[::1]:9002${WORK_DIR}/dist-disk-sets3" "http://[::1]:9003${WORK_DIR}/dist-disk-sets4" "http://[::1]:9004${WORK_DIR}/dist-disk-sets5" "http://[::1]:9005${WORK_DIR}/dist-disk-sets6" "http://[::1]:9006${WORK_DIR}/dist-disk-sets7" "http://[::1]:9007${WORK_DIR}/dist-disk-sets8" "http://[::1]:9008${WORK_DIR}/dist-disk-sets9" "http://[::1]:9009${WORK_DIR}/dist-disk-sets10" "http://[::1]:9000${WORK_DIR}/dist-disk-sets11" "http://[::1]:9001${WORK_DIR}/dist-disk-sets12" "http://[::1]:9002${WORK_DIR}/dist-disk-sets13" "http://[::1]:9003${WORK_DIR}/dist-disk-sets14" "http://[::1]:9004${WORK_DIR}/dist-disk-sets15" "http://[::1]:9005${WORK_DIR}/dist-disk-sets16" "http://[::1]:9006${WORK_DIR}/dist-disk-sets17" "http://[::1]:9007${WORK_DIR}/dist-disk-sets18" "http://[::1]:9008${WORK_DIR}/dist-disk-sets19" "http://[::1]:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-v6-9009.log" 2>&1 &
+    minio_pids[9]=$!
+
+    sleep 35
+    echo "${minio_pids[@]}"
+}
+
 function start_minio_dist_erasure_sets()
 {
     declare -a minio_pids
+    export MINIO_ACCESS_KEY=$ACCESS_KEY
+    export MINIO_SECRET_KEY=$SECRET_KEY
     "${MINIO[@]}" server --address=:9000 "http://127.0.0.1:9000${WORK_DIR}/dist-disk-sets1" "http://127.0.0.1:9001${WORK_DIR}/dist-disk-sets2" "http://127.0.0.1:9002${WORK_DIR}/dist-disk-sets3" "http://127.0.0.1:9003${WORK_DIR}/dist-disk-sets4" "http://127.0.0.1:9004${WORK_DIR}/dist-disk-sets5" "http://127.0.0.1:9005${WORK_DIR}/dist-disk-sets6" "http://127.0.0.1:9006${WORK_DIR}/dist-disk-sets7" "http://127.0.0.1:9007${WORK_DIR}/dist-disk-sets8" "http://127.0.0.1:9008${WORK_DIR}/dist-disk-sets9" "http://127.0.0.1:9009${WORK_DIR}/dist-disk-sets10" "http://127.0.0.1:9000${WORK_DIR}/dist-disk-sets11" "http://127.0.0.1:9001${WORK_DIR}/dist-disk-sets12" "http://127.0.0.1:9002${WORK_DIR}/dist-disk-sets13" "http://127.0.0.1:9003${WORK_DIR}/dist-disk-sets14" "http://127.0.0.1:9004${WORK_DIR}/dist-disk-sets15" "http://127.0.0.1:9005${WORK_DIR}/dist-disk-sets16" "http://127.0.0.1:9006${WORK_DIR}/dist-disk-sets17" "http://127.0.0.1:9007${WORK_DIR}/dist-disk-sets18" "http://127.0.0.1:9008${WORK_DIR}/dist-disk-sets19" "http://127.0.0.1:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-9000.log" 2>&1 &
     minio_pids[0]=$!
     "${MINIO[@]}" server --address=:9001 "http://127.0.0.1:9000${WORK_DIR}/dist-disk-sets1" "http://127.0.0.1:9001${WORK_DIR}/dist-disk-sets2" "http://127.0.0.1:9002${WORK_DIR}/dist-disk-sets3" "http://127.0.0.1:9003${WORK_DIR}/dist-disk-sets4" "http://127.0.0.1:9004${WORK_DIR}/dist-disk-sets5" "http://127.0.0.1:9005${WORK_DIR}/dist-disk-sets6" "http://127.0.0.1:9006${WORK_DIR}/dist-disk-sets7" "http://127.0.0.1:9007${WORK_DIR}/dist-disk-sets8" "http://127.0.0.1:9008${WORK_DIR}/dist-disk-sets9" "http://127.0.0.1:9009${WORK_DIR}/dist-disk-sets10" "http://127.0.0.1:9000${WORK_DIR}/dist-disk-sets11" "http://127.0.0.1:9001${WORK_DIR}/dist-disk-sets12" "http://127.0.0.1:9002${WORK_DIR}/dist-disk-sets13" "http://127.0.0.1:9003${WORK_DIR}/dist-disk-sets14" "http://127.0.0.1:9004${WORK_DIR}/dist-disk-sets15" "http://127.0.0.1:9005${WORK_DIR}/dist-disk-sets16" "http://127.0.0.1:9006${WORK_DIR}/dist-disk-sets17" "http://127.0.0.1:9007${WORK_DIR}/dist-disk-sets18" "http://127.0.0.1:9008${WORK_DIR}/dist-disk-sets19" "http://127.0.0.1:9009${WORK_DIR}/dist-disk-sets20" >"$WORK_DIR/dist-minio-9001.log" 2>&1 &
@@ -99,6 +131,8 @@ function start_minio_dist_erasure_sets()
 function start_minio_dist_erasure()
 {
     declare -a minio_pids
+    export MINIO_ACCESS_KEY=$ACCESS_KEY
+    export MINIO_SECRET_KEY=$SECRET_KEY
     "${MINIO[@]}" server --address=:9000 "http://127.0.0.1:9000${WORK_DIR}/dist-disk1" "http://127.0.0.1:9001${WORK_DIR}/dist-disk2" "http://127.0.0.1:9002${WORK_DIR}/dist-disk3" "http://127.0.0.1:9003${WORK_DIR}/dist-disk4" >"$WORK_DIR/dist-minio-9000.log" 2>&1 &
     minio_pids[0]=$!
     "${MINIO[@]}" server --address=:9001 "http://127.0.0.1:9000${WORK_DIR}/dist-disk1" "http://127.0.0.1:9001${WORK_DIR}/dist-disk2" "http://127.0.0.1:9002${WORK_DIR}/dist-disk3" "http://127.0.0.1:9003${WORK_DIR}/dist-disk4" >"$WORK_DIR/dist-minio-9001.log" 2>&1 &
@@ -157,6 +191,34 @@ function run_test_erasure_sets() {
     return "$rv"
 }
 
+function run_test_dist_erasure_sets_ipv6()
+{
+    minio_pids=( $(start_minio_dist_erasure_sets_ipv6) )
+
+    export SERVER_ENDPOINT="[::1]:9000"
+
+    (cd "$WORK_DIR" && "$FUNCTIONAL_TESTS")
+    rv=$?
+
+    for pid in "${minio_pids[@]}"; do
+        kill "$pid"
+    done
+    sleep 3
+
+    if [ "$rv" -ne 0 ]; then
+        for i in $(seq 0 9); do
+            echo "server$i log:"
+            cat "$WORK_DIR/dist-minio-v6-900$i.log"
+        done
+    fi
+
+    for i in $(seq 0 9); do
+        rm -f "$WORK_DIR/dist-minio-v6-900$i.log"
+    done
+
+    return "$rv"
+}
+
 function run_test_dist_erasure_sets()
 {
     minio_pids=( $(start_minio_dist_erasure_sets) )
@@ -233,6 +295,7 @@ function run_test_gateway_s3()
 {
     minio_pid="$(start_minio_gateway_s3)"
 
+    export SERVER_ENDPOINT="127.0.0.1:9000"
     export ACCESS_KEY=Q3AM3UQ867SPQQA43P2F
     export SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG
     (cd "$WORK_DIR" && "$FUNCTIONAL_TESTS")
@@ -275,6 +338,7 @@ function __init__()
         exit 1
     fi
 
+    sed -i 's|-sS|-sSg|g' "$FUNCTIONAL_TESTS"
     chmod a+x "$FUNCTIONAL_TESTS"
 }
 
@@ -315,6 +379,13 @@ function main()
         exit 1
     fi
 
+    echo "Testing in Distributed Erasure setup as sets with ipv6"
+    if ! run_test_dist_erasure_sets_ipv6; then
+        echo "FAILED"
+        rm -fr "$WORK_DIR"
+        exit 1
+    fi
+
     echo "Testing in Gateway S3 setup"
     if ! run_test_gateway_s3; then
         echo "FAILED"

cmd/acl-handlers.go

@@ -21,6 +21,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
+	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/policy"
 )
 
@@ -56,26 +57,28 @@ type accessControlPolicy struct {
 func (api objectAPIHandlers) GetBucketACLHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "GetBucketACL")
 
+	defer logger.AuditLog(w, r, "GetBucketACL", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Allow getBucketACL if policy action is set, since this is a dummy call
 	// we are simply re-purposing the bucketPolicyAction.
 	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Before proceeding validate if bucket exists.
 	_, err := objAPI.GetBucketInfo(ctx, bucket)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -89,7 +92,7 @@ func (api objectAPIHandlers) GetBucketACLHandler(w http.ResponseWriter, r *http.
 		Permission: "FULL_CONTROL",
 	})
 	if err := xml.NewEncoder(w).Encode(acl); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -103,27 +106,29 @@ func (api objectAPIHandlers) GetBucketACLHandler(w http.ResponseWriter, r *http.
 func (api objectAPIHandlers) GetObjectACLHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "GetObjectACL")
 
+	defer logger.AuditLog(w, r, "GetObjectACL", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 	object := vars["object"]
 
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Allow getObjectACL if policy action is set, since this is a dummy call
 	// we are simply re-purposing the bucketPolicyAction.
 	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Before proceeding validate if object exists.
-	_, err := objAPI.GetObjectInfo(ctx, bucket, object)
+	_, err := objAPI.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -137,7 +142,7 @@ func (api objectAPIHandlers) GetObjectACLHandler(w http.ResponseWriter, r *http.
 		Permission: "FULL_CONTROL",
 	})
 	if err := xml.NewEncoder(w).Encode(acl); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 

cmd/admin-heal-ops.go

@@ -20,12 +20,15 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"net/http"
+	"runtime"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/madmin"
+	"github.com/minio/minio/pkg/sync/errgroup"
 )
 
 // healStatusSummary - overall short summary of a healing sequence
@@ -59,9 +62,8 @@ var (
 	errHealPushStopNDiscard = fmt.Errorf("heal push stopped due to heal stop signal")
 	errHealStopSignalled    = fmt.Errorf("heal stop signaled")
 
-	errFnHealFromAPIErr = func(err error) error {
-		errCode := toAPIErrorCode(err)
-		apiErr := getAPIError(errCode)
+	errFnHealFromAPIErr = func(ctx context.Context, err error) error {
+		apiErr := toAPIError(ctx, err)
 		return fmt.Errorf("Heal internal error: %s: %s",
 			apiErr.Code, apiErr.Description)
 	}
@@ -110,6 +112,32 @@ func initAllHealState(isErasureMode bool) {
 	globalAllHealState = allHealState{
 		healSeqMap: make(map[string]*healSequence),
 	}
+
+	go globalAllHealState.periodicHealSeqsClean()
+}
+
+func (ahs *allHealState) periodicHealSeqsClean() {
+	// Launch clean-up routine to remove this heal sequence (after
+	// it ends) from the global state after timeout has elapsed.
+	ticker := time.NewTicker(time.Minute * 5)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ticker.C:
+			now := UTCNow()
+			ahs.Lock()
+			for path, h := range ahs.healSeqMap {
+				if h.hasEnded() && h.endTime.Add(keepHealSeqStateDuration).Before(now) {
+					delete(ahs.healSeqMap, path)
+				}
+			}
+			ahs.Unlock()
+		case <-GlobalServiceDoneCh:
+			// server could be restarting - need
+			// to exit immediately
+			return
+		}
+	}
 }
 
 // getHealSequence - Retrieve a heal sequence by path. The second
@@ -121,6 +149,35 @@ func (ahs *allHealState) getHealSequence(path string) (h *healSequence, exists b
 	return h, exists
 }
 
+func (ahs *allHealState) stopHealSequence(path string) ([]byte, APIError) {
+	var hsp madmin.HealStopSuccess
+	he, exists := ahs.getHealSequence(path)
+	if !exists {
+		hsp = madmin.HealStopSuccess{
+			ClientToken: "invalid",
+			StartTime:   UTCNow(),
+		}
+	} else {
+		hsp = madmin.HealStopSuccess{
+			ClientToken:   he.clientToken,
+			ClientAddress: he.clientAddress,
+			StartTime:     he.startTime,
+		}
+
+		he.stop()
+		for !he.hasEnded() {
+			time.Sleep(1 * time.Second)
+		}
+		ahs.Lock()
+		defer ahs.Unlock()
+		// Heal sequence explicitly stopped, remove it.
+		delete(ahs.healSeqMap, path)
+	}
+
+	b, err := json.Marshal(&hsp)
+	return b, toAdminAPIErr(context.Background(), err)
+}
+
 // LaunchNewHealSequence - launches a background routine that performs
 // healing according to the healSequence argument. For each heal
 // sequence, state is stored in the `globalAllHealState`, which is a
@@ -132,7 +189,7 @@ func (ahs *allHealState) getHealSequence(path string) (h *healSequence, exists b
 // background routine to clean up heal results after the
 // aforementioned duration.
 func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
-	respBytes []byte, errCode APIErrorCode, errMsg string) {
+	respBytes []byte, apiErr APIError, errMsg string) {
 
 	existsAndLive := false
 	he, exists := ahs.getHealSequence(h.path)
@@ -141,22 +198,21 @@ func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
 			existsAndLive = true
 		}
 	}
+
 	if existsAndLive {
 		// A heal sequence exists on the given path.
 		if h.forceStarted {
-			// stop the running heal sequence - wait for
-			// it to finish.
+			// stop the running heal sequence - wait for it to finish.
 			he.stop()
 			for !he.hasEnded() {
-				time.Sleep(10 * time.Second)
+				time.Sleep(1 * time.Second)
 			}
 		} else {
 			errMsg = "Heal is already running on the given path " +
 				"(use force-start option to stop and start afresh). " +
-				fmt.Sprintf("The heal was started by IP %s at %s",
-					h.clientAddress, h.startTime)
-
-			return nil, ErrHealAlreadyRunning, errMsg
+				fmt.Sprintf("The heal was started by IP %s at %s, token is %s",
+					h.clientAddress, h.startTime.Format(http.TimeFormat), h.clientToken)
+			return nil, errorCodes.ToAPIErr(ErrHealAlreadyRunning), errMsg
 		}
 	}
 
@@ -171,7 +227,7 @@ func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
 
 			errMsg = "The provided heal sequence path overlaps with an existing " +
 				fmt.Sprintf("heal path: %s", k)
-			return nil, ErrHealOverlappingPaths, errMsg
+			return nil, errorCodes.ToAPIErr(ErrHealOverlappingPaths), errMsg
 		}
 	}
 
@@ -181,51 +237,16 @@ func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
 	// Launch top-level background heal go-routine
 	go h.healSequenceStart()
 
-	// Launch clean-up routine to remove this heal sequence (after
-	// it ends) from the global state after timeout has elapsed.
-	go func() {
-		var keepStateTimeout <-chan time.Time
-		ticker := time.NewTicker(time.Minute)
-		defer ticker.Stop()
-		everyMinute := ticker.C
-		for {
-			select {
-			// Check every minute if heal sequence has ended.
-			case <-everyMinute:
-				if h.hasEnded() {
-					keepStateTimeout = time.After(keepHealSeqStateDuration)
-					everyMinute = nil
-				}
-
-			// This case does not fire until the heal
-			// sequence completes.
-			case <-keepStateTimeout:
-				// Heal sequence has ended, keep
-				// results state duration has elapsed,
-				// so purge state.
-				ahs.Lock()
-				defer ahs.Unlock()
-				delete(ahs.healSeqMap, h.path)
-				return
-
-			case <-globalServiceDoneCh:
-				// server could be restarting - need
-				// to exit immediately
-				return
-			}
-		}
-	}()
-
 	b, err := json.Marshal(madmin.HealStartSuccess{
 		ClientToken:   h.clientToken,
 		ClientAddress: h.clientAddress,
 		StartTime:     h.startTime,
 	})
 	if err != nil {
-		logger.LogIf(context.Background(), err)
-		return nil, ErrInternalError, ""
+		logger.LogIf(h.ctx, err)
+		return nil, toAPIError(h.ctx, err), ""
 	}
-	return b, ErrNone, ""
+	return b, noError, ""
 }
 
 // PopHealStatusJSON - Called by heal-status API. It fetches the heal
@@ -270,7 +291,7 @@ func (ahs *allHealState) PopHealStatusJSON(path string,
 
 	jbytes, err := json.Marshal(h.currentStatus)
 	if err != nil {
-		logger.LogIf(context.Background(), err)
+		logger.LogIf(h.ctx, err)
 		return nil, ErrInternalError
 	}
 
@@ -283,12 +304,15 @@ type healSequence struct {
 	// bucket, and prefix on which heal seq. was initiated
 	bucket, objPrefix string
 
-	// path is just bucket + "/" + objPrefix
+	// path is just pathJoin(bucket, objPrefix)
 	path string
 
 	// time at which heal sequence was started
 	startTime time.Time
 
+	// time at which heal sequence has ended
+	endTime time.Time
+
 	// Heal client info
 	clientToken, clientAddress string
 
@@ -328,7 +352,7 @@ func newHealSequence(bucket, objPrefix, clientAddr string,
 	return &healSequence{
 		bucket:        bucket,
 		objPrefix:     objPrefix,
-		path:          bucket + "/" + objPrefix,
+		path:          pathJoin(bucket, objPrefix),
 		startTime:     UTCNow(),
 		clientToken:   mustGetUUID(),
 		clientAddress: clientAddr,
@@ -383,7 +407,6 @@ func (h *healSequence) stop() {
 // sequence automatically resumes. The return value indicates if the
 // operation succeeded.
 func (h *healSequence) pushHealResultItem(r madmin.HealResultItem) error {
-
 	// start a timer to keep an upper time limit to find an empty
 	// slot to add the given heal result - if no slot is found it
 	// means that the server is holding the maximum amount of
@@ -467,6 +490,7 @@ func (h *healSequence) healSequenceStart() {
 
 	select {
 	case err, ok := <-h.traverseAndHealDoneCh:
+		h.endTime = UTCNow()
 		h.currentStatus.updateLock.Lock()
 		defer h.currentStatus.updateLock.Unlock()
 		// Heal traversal is complete.
@@ -480,6 +504,7 @@ func (h *healSequence) healSequenceStart() {
 		}
 
 	case <-h.stopSignalCh:
+		h.endTime = UTCNow()
 		h.currentStatus.updateLock.Lock()
 		h.currentStatus.Summary = healStoppedStatus
 		h.currentStatus.FailureDetail = errHealStopSignalled.Error()
@@ -519,6 +544,12 @@ func (h *healSequence) traverseAndHeal() {
 	// Start with format healing
 	checkErr(h.healDiskFormat)
 
+	// Start healing the config prefix.
+	checkErr(h.healMinioSysMeta(minioConfigPrefix))
+
+	// Start healing the bucket config prefix.
+	checkErr(h.healMinioSysMeta(bucketConfigPrefix))
+
 	// Heal buckets and objects
 	checkErr(h.healBuckets)
 
@@ -529,9 +560,74 @@ func (h *healSequence) traverseAndHeal() {
 	close(h.traverseAndHealDoneCh)
 }
 
+// healMinioSysMeta - heals all files under a given meta prefix, returns a function
+// which in-turn heals the respective meta directory path and any files in int.
+func (h *healSequence) healMinioSysMeta(metaPrefix string) func() error {
+	return func() error {
+		// Get current object layer instance.
+		objectAPI := newObjectLayerFn()
+		if objectAPI == nil {
+			return errServerNotInitialized
+		}
+
+		// NOTE: Healing on meta is run regardless
+		// of any bucket being selected, this is to ensure that
+		// meta are always upto date and correct.
+		marker := ""
+		isTruncated := true
+		for isTruncated {
+			if globalHTTPServer != nil {
+				// Wait at max 1 minute for an inprogress request
+				// before proceeding to heal
+				waitCount := 60
+				// Any requests in progress, delay the heal.
+				for globalHTTPServer.GetRequestCount() > 2 && waitCount > 0 {
+					waitCount--
+					time.Sleep(1 * time.Second)
+				}
+			}
+
+			// Lists all objects under `config` prefix.
+			objectInfos, err := objectAPI.ListObjectsHeal(h.ctx, minioMetaBucket, metaPrefix,
+				marker, "", 1000)
+			if err != nil {
+				return errFnHealFromAPIErr(h.ctx, err)
+			}
+
+			for index := range objectInfos.Objects {
+				if h.isQuitting() {
+					return errHealStopSignalled
+				}
+				o := objectInfos.Objects[index]
+				res, herr := objectAPI.HealObject(h.ctx, o.Bucket, o.Name, h.settings.DryRun, h.settings.Remove)
+				// Object might have been deleted, by the time heal
+				// was attempted we ignore this file an move on.
+				if isErrObjectNotFound(herr) {
+					continue
+				}
+				if herr != nil {
+					return herr
+				}
+				res.Type = madmin.HealItemBucketMetadata
+				if err = h.pushHealResultItem(res); err != nil {
+					return err
+				}
+			}
+
+			isTruncated = objectInfos.IsTruncated
+			marker = objectInfos.NextMarker
+		}
+		return nil
+	}
+}
+
 // healDiskFormat - heals format.json, return value indicates if a
 // failure error occurred.
 func (h *healSequence) healDiskFormat() error {
+	if h.isQuitting() {
+		return errHealStopSignalled
+	}
+
 	// Get current object layer instance.
 	objectAPI := newObjectLayerFn()
 	if objectAPI == nil {
@@ -542,13 +638,18 @@ func (h *healSequence) healDiskFormat() error {
 	// return any error, ignore error returned when disks have
 	// already healed.
 	if err != nil && err != errNoHealRequired {
-		return errFnHealFromAPIErr(err)
+		return errFnHealFromAPIErr(h.ctx, err)
 	}
 
 	// Healing succeeded notify the peers to reload format and re-initialize disks.
 	// We will not notify peers only if healing succeeded.
 	if err == nil {
-		peersReInitFormat(globalAdminPeers, h.settings.DryRun)
+		for _, nerr := range globalNotificationSys.ReloadFormat(h.settings.DryRun) {
+			if nerr.Err != nil {
+				logger.GetReqInfo(h.ctx).SetTags("peerAddress", nerr.Host.String())
+				logger.LogIf(h.ctx, nerr.Err)
+			}
+		}
 	}
 
 	// Push format heal result
@@ -557,6 +658,10 @@ func (h *healSequence) healDiskFormat() error {
 
 // healBuckets - check for all buckets heal or just particular bucket.
 func (h *healSequence) healBuckets() error {
+	if h.isQuitting() {
+		return errHealStopSignalled
+	}
+
 	// 1. If a bucket was specified, heal only the bucket.
 	if h.bucket != "" {
 		return h.healBucket(h.bucket)
@@ -570,7 +675,7 @@ func (h *healSequence) healBuckets() error {
 
 	buckets, err := objectAPI.ListBucketsHeal(h.ctx)
 	if err != nil {
-		return errFnHealFromAPIErr(err)
+		return errFnHealFromAPIErr(h.ctx, err)
 	}
 
 	for _, bucket := range buckets {
@@ -584,36 +689,29 @@ func (h *healSequence) healBuckets() error {
 
 // healBucket - traverses and heals given bucket
 func (h *healSequence) healBucket(bucket string) error {
-	if h.isQuitting() {
-		return errHealStopSignalled
-	}
-
 	// Get current object layer instance.
 	objectAPI := newObjectLayerFn()
 	if objectAPI == nil {
 		return errServerNotInitialized
 	}
 
-	results, err := objectAPI.HealBucket(h.ctx, bucket, h.settings.DryRun)
-	// push any available results before checking for error
-	for _, result := range results {
-		if perr := h.pushHealResultItem(result); perr != nil {
-			return perr
-		}
-	}
+	result, err := objectAPI.HealBucket(h.ctx, bucket, h.settings.DryRun, h.settings.Remove)
 	// handle heal-bucket error
 	if err != nil {
 		return err
 	}
 
+	if err = h.pushHealResultItem(result); err != nil {
+		return err
+	}
+
 	if !h.settings.Recursive {
 		if h.objPrefix != "" {
 			// Check if an object named as the objPrefix exists,
 			// and if so heal it.
-			_, err = objectAPI.GetObjectInfo(h.ctx, bucket, h.objPrefix)
+			_, err = objectAPI.GetObjectInfo(h.ctx, bucket, h.objPrefix, ObjectOptions{})
 			if err == nil {
-				err = h.healObject(bucket, h.objPrefix)
-				if err != nil {
+				if err = h.healObject(bucket, h.objPrefix); err != nil {
 					return err
 				}
 			}
@@ -622,17 +720,40 @@ func (h *healSequence) healBucket(bucket string) error {
 		return nil
 	}
 
+	entries := runtime.NumCPU()
+
 	marker := ""
 	isTruncated := true
 	for isTruncated {
-		objectInfos, err := objectAPI.ListObjectsHeal(h.ctx, bucket,
-			h.objPrefix, marker, "", 1000)
-		if err != nil {
-			return errFnHealFromAPIErr(err)
+		if globalHTTPServer != nil {
+			// Wait at max 1 minute for an inprogress request
+			// before proceeding to heal
+			waitCount := 60
+			// Any requests in progress, delay the heal.
+			for globalHTTPServer.GetRequestCount() > 2 && waitCount > 0 {
+				waitCount--
+				time.Sleep(1 * time.Second)
+			}
 		}
 
-		for _, o := range objectInfos.Objects {
-			if err := h.healObject(o.Bucket, o.Name); err != nil {
+		// Heal numCPU * nodes objects at a time.
+		objectInfos, err := objectAPI.ListObjectsHeal(h.ctx, bucket,
+			h.objPrefix, marker, "", entries)
+		if err != nil {
+			return errFnHealFromAPIErr(h.ctx, err)
+		}
+
+		g := errgroup.WithNErrs(len(objectInfos.Objects))
+		for index := range objectInfos.Objects {
+			index := index
+			g.Go(func() error {
+				o := objectInfos.Objects[index]
+				return h.healObject(o.Bucket, o.Name)
+			}, index)
+		}
+
+		for _, err := range g.Wait() {
+			if err != nil {
 				return err
 			}
 		}
@@ -655,7 +776,10 @@ func (h *healSequence) healObject(bucket, object string) error {
 		return errServerNotInitialized
 	}
 
-	hri, err := objectAPI.HealObject(h.ctx, bucket, object, h.settings.DryRun)
+	hri, err := objectAPI.HealObject(h.ctx, bucket, object, h.settings.DryRun, h.settings.Remove)
+	if isErrObjectNotFound(err) {
+		return nil
+	}
 	if err != nil {
 		hri.Detail = err.Error()
 	}

cmd/admin-router.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017, 2018, 2019 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,7 +31,7 @@ type adminAPIHandlers struct {
 }
 
 // registerAdminRouter - Add handler functions for each service REST API routes.
-func registerAdminRouter(router *mux.Router) {
+func registerAdminRouter(router *mux.Router, enableConfigOps, enableIAMOps bool) {
 
 	adminAPI := adminAPIHandlers{}
 	// Admin router
@@ -53,26 +53,71 @@ func registerAdminRouter(router *mux.Router) {
 	// Info operations
 	adminV1Router.Methods(http.MethodGet).Path("/info").HandlerFunc(httpTraceAll(adminAPI.ServerInfoHandler))
 
-	/// Lock operations
+	if globalIsDistXL || globalIsXL {
+		/// Heal operations
 
-	// List Locks
-	adminV1Router.Methods(http.MethodGet).Path("/locks").HandlerFunc(httpTraceAll(adminAPI.ListLocksHandler))
-	// Clear locks
-	adminV1Router.Methods(http.MethodDelete).Path("/locks").HandlerFunc(httpTraceAll(adminAPI.ClearLocksHandler))
+		// Heal processing endpoint.
+		adminV1Router.Methods(http.MethodPost).Path("/heal/").HandlerFunc(httpTraceAll(adminAPI.HealHandler))
+		adminV1Router.Methods(http.MethodPost).Path("/heal/{bucket}").HandlerFunc(httpTraceAll(adminAPI.HealHandler))
+		adminV1Router.Methods(http.MethodPost).Path("/heal/{bucket}/{prefix:.*}").HandlerFunc(httpTraceAll(adminAPI.HealHandler))
 
-	/// Heal operations
+		/// Health operations
 
-	// Heal processing endpoint.
-	adminV1Router.Methods(http.MethodPost).Path("/heal/").HandlerFunc(httpTraceAll(adminAPI.HealHandler))
-	adminV1Router.Methods(http.MethodPost).Path("/heal/{bucket}").HandlerFunc(httpTraceAll(adminAPI.HealHandler))
-	adminV1Router.Methods(http.MethodPost).Path("/heal/{bucket}/{prefix:.*}").HandlerFunc(httpTraceAll(adminAPI.HealHandler))
+	}
+	// Performance command - return performance details based on input type
+	adminV1Router.Methods(http.MethodGet).Path("/performance").HandlerFunc(httpTraceAll(adminAPI.PerfInfoHandler)).Queries("perfType", "{perfType:.*}")
+
+	// Profiling operations
+	adminV1Router.Methods(http.MethodPost).Path("/profiling/start").HandlerFunc(httpTraceAll(adminAPI.StartProfilingHandler)).
+		Queries("profilerType", "{profilerType:.*}")
+	adminV1Router.Methods(http.MethodGet).Path("/profiling/download").HandlerFunc(httpTraceAll(adminAPI.DownloadProfilingHandler))
 
 	/// Config operations
+	if enableConfigOps {
+		// Update credentials
+		adminV1Router.Methods(http.MethodPut).Path("/config/credential").HandlerFunc(httpTraceHdrs(adminAPI.UpdateAdminCredentialsHandler))
+		// Get config
+		adminV1Router.Methods(http.MethodGet).Path("/config").HandlerFunc(httpTraceHdrs(adminAPI.GetConfigHandler))
+		// Set config
+		adminV1Router.Methods(http.MethodPut).Path("/config").HandlerFunc(httpTraceHdrs(adminAPI.SetConfigHandler))
 
-	// Update credentials
-	adminV1Router.Methods(http.MethodPut).Path("/config/credential").HandlerFunc(httpTraceAll(adminAPI.UpdateCredentialsHandler))
-	// Get config
-	adminV1Router.Methods(http.MethodGet).Path("/config").HandlerFunc(httpTraceAll(adminAPI.GetConfigHandler))
-	// Set config
-	adminV1Router.Methods(http.MethodPut).Path("/config").HandlerFunc(httpTraceAll(adminAPI.SetConfigHandler))
+		// Get config keys/values
+		adminV1Router.Methods(http.MethodGet).Path("/config-keys").HandlerFunc(httpTraceHdrs(adminAPI.GetConfigKeysHandler))
+		// Set config keys/values
+		adminV1Router.Methods(http.MethodPut).Path("/config-keys").HandlerFunc(httpTraceHdrs(adminAPI.SetConfigKeysHandler))
+	}
+
+	if enableIAMOps {
+		// -- IAM APIs --
+
+		// Add policy IAM
+		adminV1Router.Methods(http.MethodPut).Path("/add-canned-policy").HandlerFunc(httpTraceHdrs(adminAPI.AddCannedPolicy)).Queries("name",
+			"{name:.*}")
+
+		// Add user IAM
+		adminV1Router.Methods(http.MethodPut).Path("/add-user").HandlerFunc(httpTraceHdrs(adminAPI.AddUser)).Queries("accessKey", "{accessKey:.*}")
+		adminV1Router.Methods(http.MethodPut).Path("/set-user-policy").HandlerFunc(httpTraceHdrs(adminAPI.SetUserPolicy)).
+			Queries("accessKey", "{accessKey:.*}").Queries("name", "{name:.*}")
+		adminV1Router.Methods(http.MethodPut).Path("/set-user-status").HandlerFunc(httpTraceHdrs(adminAPI.SetUserStatus)).
+			Queries("accessKey", "{accessKey:.*}").Queries("status", "{status:.*}")
+
+		// Remove policy IAM
+		adminV1Router.Methods(http.MethodDelete).Path("/remove-canned-policy").HandlerFunc(httpTraceHdrs(adminAPI.RemoveCannedPolicy)).Queries("name", "{name:.*}")
+
+		// Remove user IAM
+		adminV1Router.Methods(http.MethodDelete).Path("/remove-user").HandlerFunc(httpTraceHdrs(adminAPI.RemoveUser)).Queries("accessKey", "{accessKey:.*}")
+
+		// List users
+		adminV1Router.Methods(http.MethodGet).Path("/list-users").HandlerFunc(httpTraceHdrs(adminAPI.ListUsers))
+
+		// List policies
+		adminV1Router.Methods(http.MethodGet).Path("/list-canned-policies").HandlerFunc(httpTraceHdrs(adminAPI.ListCannedPolicies))
+	}
+
+	// -- Top APIs --
+	// Top locks
+	adminV1Router.Methods(http.MethodGet).Path("/top/locks").HandlerFunc(httpTraceHdrs(adminAPI.TopLocksHandler))
+
+	// If none of the routes match, return error.
+	adminV1Router.NotFoundHandler = http.HandlerFunc(httpTraceHdrs(notFoundHandlerJSON))
 }

cmd/admin-rpc-client.go

@@ -1,551 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2014, 2015, 2016, 2017, 2018 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cmd
-
-import (
-	"context"
-	"crypto/tls"
-	"encoding/json"
-	"fmt"
-	"net"
-	"sort"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/minio/minio/cmd/logger"
-	xnet "github.com/minio/minio/pkg/net"
-)
-
-var errUnsupportedSignal = fmt.Errorf("unsupported signal: only restart and stop signals are supported")
-
-// AdminRPCClient - admin RPC client talks to admin RPC server.
-type AdminRPCClient struct {
-	*RPCClient
-}
-
-// SignalService - calls SignalService RPC.
-func (rpcClient *AdminRPCClient) SignalService(signal serviceSignal) (err error) {
-	args := SignalServiceArgs{Sig: signal}
-	reply := VoidReply{}
-
-	return rpcClient.Call(adminServiceName+".SignalService", &args, &reply)
-}
-
-// ReInitFormat - re-initialize disk format, remotely.
-func (rpcClient *AdminRPCClient) ReInitFormat(dryRun bool) error {
-	args := ReInitFormatArgs{DryRun: dryRun}
-	reply := VoidReply{}
-
-	return rpcClient.Call(adminServiceName+".ReInitFormat", &args, &reply)
-}
-
-// ListLocks - Sends list locks command to remote server via RPC.
-func (rpcClient *AdminRPCClient) ListLocks(bucket, prefix string, duration time.Duration) ([]VolumeLockInfo, error) {
-	args := ListLocksQuery{
-		Bucket:   bucket,
-		Prefix:   prefix,
-		Duration: duration,
-	}
-	var reply []VolumeLockInfo
-
-	err := rpcClient.Call(adminServiceName+".ListLocks", &args, &reply)
-	return reply, err
-}
-
-// ServerInfo - returns the server info of the server to which the RPC call is made.
-func (rpcClient *AdminRPCClient) ServerInfo() (sid ServerInfoData, err error) {
-	err = rpcClient.Call(adminServiceName+".ServerInfo", &AuthArgs{}, &sid)
-	return sid, err
-}
-
-// GetConfig - returns config.json of the remote server.
-func (rpcClient *AdminRPCClient) GetConfig() ([]byte, error) {
-	args := AuthArgs{}
-	var reply []byte
-
-	err := rpcClient.Call(adminServiceName+".GetConfig", &args, &reply)
-	return reply, err
-}
-
-// WriteTmpConfig - writes config file content to a temporary file on a remote node.
-func (rpcClient *AdminRPCClient) WriteTmpConfig(tmpFileName string, configBytes []byte) error {
-	args := WriteConfigArgs{
-		TmpFileName: tmpFileName,
-		Buf:         configBytes,
-	}
-	reply := VoidReply{}
-
-	err := rpcClient.Call(adminServiceName+".WriteTmpConfig", &args, &reply)
-	logger.LogIf(context.Background(), err)
-	return err
-}
-
-// CommitConfig - Move the new config in tmpFileName onto config.json on a remote node.
-func (rpcClient *AdminRPCClient) CommitConfig(tmpFileName string) error {
-	args := CommitConfigArgs{FileName: tmpFileName}
-	reply := VoidReply{}
-
-	err := rpcClient.Call(adminServiceName+".CommitConfig", &args, &reply)
-	logger.LogIf(context.Background(), err)
-	return err
-}
-
-// NewAdminRPCClient - returns new admin RPC client.
-func NewAdminRPCClient(host *xnet.Host) (*AdminRPCClient, error) {
-	scheme := "http"
-	if globalIsSSL {
-		scheme = "https"
-	}
-
-	serviceURL := &xnet.URL{
-		Scheme: scheme,
-		Host:   host.String(),
-		Path:   adminServicePath,
-	}
-
-	var tlsConfig *tls.Config
-	if globalIsSSL {
-		tlsConfig = &tls.Config{
-			ServerName: host.Name,
-			RootCAs:    globalRootCAs,
-		}
-	}
-
-	rpcClient, err := NewRPCClient(
-		RPCClientArgs{
-			NewAuthTokenFunc: newAuthToken,
-			RPCVersion:       globalRPCAPIVersion,
-			ServiceName:      adminServiceName,
-			ServiceURL:       serviceURL,
-			TLSConfig:        tlsConfig,
-		},
-	)
-	if err != nil {
-		return nil, err
-	}
-
-	return &AdminRPCClient{rpcClient}, nil
-}
-
-// adminCmdRunner - abstracts local and remote execution of admin
-// commands like service stop and service restart.
-type adminCmdRunner interface {
-	SignalService(s serviceSignal) error
-	ReInitFormat(dryRun bool) error
-	ListLocks(bucket, prefix string, duration time.Duration) ([]VolumeLockInfo, error)
-	ServerInfo() (ServerInfoData, error)
-	GetConfig() ([]byte, error)
-	WriteTmpConfig(tmpFileName string, configBytes []byte) error
-	CommitConfig(tmpFileName string) error
-}
-
-// adminPeer - represents an entity that implements admin API RPCs.
-type adminPeer struct {
-	addr      string
-	cmdRunner adminCmdRunner
-	isLocal   bool
-}
-
-// type alias for a collection of adminPeer.
-type adminPeers []adminPeer
-
-// makeAdminPeers - helper function to construct a collection of adminPeer.
-func makeAdminPeers(endpoints EndpointList) (adminPeerList adminPeers) {
-	localAddr := GetLocalPeer(endpoints)
-	if strings.HasPrefix(localAddr, "127.0.0.1:") {
-		// Use first IPv4 instead of loopback address.
-		localAddr = net.JoinHostPort(sortIPs(localIP4.ToSlice())[0], globalMinioPort)
-	}
-	adminPeerList = append(adminPeerList, adminPeer{
-		addr:      localAddr,
-		cmdRunner: localAdminClient{},
-		isLocal:   true,
-	})
-
-	for _, hostStr := range GetRemotePeers(endpoints) {
-		host, err := xnet.ParseHost(hostStr)
-		logger.FatalIf(err, "Unable to parse Admin RPC Host", context.Background())
-		rpcClient, err := NewAdminRPCClient(host)
-		logger.FatalIf(err, "Unable to initialize Admin RPC Client", context.Background())
-		adminPeerList = append(adminPeerList, adminPeer{
-			addr:      hostStr,
-			cmdRunner: rpcClient,
-		})
-	}
-
-	return adminPeerList
-}
-
-// peersReInitFormat - reinitialize remote object layers to new format.
-func peersReInitFormat(peers adminPeers, dryRun bool) error {
-	errs := make([]error, len(peers))
-
-	// Send ReInitFormat RPC call to all nodes.
-	// for local adminPeer this is a no-op.
-	wg := sync.WaitGroup{}
-	for i, peer := range peers {
-		wg.Add(1)
-		go func(idx int, peer adminPeer) {
-			defer wg.Done()
-			if !peer.isLocal {
-				errs[idx] = peer.cmdRunner.ReInitFormat(dryRun)
-			}
-		}(i, peer)
-	}
-	wg.Wait()
-	return nil
-}
-
-// Initialize global adminPeer collection.
-func initGlobalAdminPeers(endpoints EndpointList) {
-	globalAdminPeers = makeAdminPeers(endpoints)
-}
-
-// invokeServiceCmd - Invoke Restart/Stop command.
-func invokeServiceCmd(cp adminPeer, cmd serviceSignal) (err error) {
-	switch cmd {
-	case serviceRestart, serviceStop:
-		err = cp.cmdRunner.SignalService(cmd)
-	}
-	return err
-}
-
-// sendServiceCmd - Invoke Restart command on remote peers
-// adminPeer followed by on the local peer.
-func sendServiceCmd(cps adminPeers, cmd serviceSignal) {
-	// Send service command like stop or restart to all remote nodes and finally run on local node.
-	errs := make([]error, len(cps))
-	var wg sync.WaitGroup
-	remotePeers := cps[1:]
-	for i := range remotePeers {
-		wg.Add(1)
-		go func(idx int) {
-			defer wg.Done()
-			// we use idx+1 because remotePeers slice is 1 position shifted w.r.t cps
-			errs[idx+1] = invokeServiceCmd(remotePeers[idx], cmd)
-		}(i)
-	}
-	wg.Wait()
-	errs[0] = invokeServiceCmd(cps[0], cmd)
-}
-
-// listPeerLocksInfo - fetch list of locks held on the given bucket,
-// matching prefix held longer than duration from all peer servers.
-func listPeerLocksInfo(peers adminPeers, bucket, prefix string, duration time.Duration) ([]VolumeLockInfo, error) {
-	// Used to aggregate volume lock information from all nodes.
-	allLocks := make([][]VolumeLockInfo, len(peers))
-	errs := make([]error, len(peers))
-	var wg sync.WaitGroup
-	localPeer := peers[0]
-	remotePeers := peers[1:]
-	for i, remotePeer := range remotePeers {
-		wg.Add(1)
-		go func(idx int, remotePeer adminPeer) {
-			defer wg.Done()
-			// `remotePeers` is right-shifted by one position relative to `peers`
-			allLocks[idx], errs[idx] = remotePeer.cmdRunner.ListLocks(bucket, prefix, duration)
-		}(i+1, remotePeer)
-	}
-	wg.Wait()
-	allLocks[0], errs[0] = localPeer.cmdRunner.ListLocks(bucket, prefix, duration)
-
-	// Summarizing errors received for ListLocks RPC across all
-	// nodes.  N B the possible unavailability of quorum in errors
-	// applies only to distributed setup.
-	errCount, err := reduceErrs(errs, []error{})
-	if err != nil {
-		if errCount >= (len(peers)/2 + 1) {
-			return nil, err
-		}
-		return nil, InsufficientReadQuorum{}
-	}
-
-	// Group lock information across nodes by (bucket, object)
-	// pair. For readability only.
-	paramLockMap := make(map[nsParam][]VolumeLockInfo)
-	for _, nodeLocks := range allLocks {
-		for _, lockInfo := range nodeLocks {
-			param := nsParam{
-				volume: lockInfo.Bucket,
-				path:   lockInfo.Object,
-			}
-			paramLockMap[param] = append(paramLockMap[param], lockInfo)
-		}
-	}
-	groupedLockInfos := []VolumeLockInfo{}
-	for _, volLocks := range paramLockMap {
-		groupedLockInfos = append(groupedLockInfos, volLocks...)
-	}
-	return groupedLockInfos, nil
-}
-
-// uptimeSlice - used to sort uptimes in chronological order.
-type uptimeSlice []struct {
-	err    error
-	uptime time.Duration
-}
-
-func (ts uptimeSlice) Len() int {
-	return len(ts)
-}
-
-func (ts uptimeSlice) Less(i, j int) bool {
-	return ts[i].uptime < ts[j].uptime
-}
-
-func (ts uptimeSlice) Swap(i, j int) {
-	ts[i], ts[j] = ts[j], ts[i]
-}
-
-// getPeerUptimes - returns the uptime since the last time read quorum
-// was established on success. Otherwise returns errXLReadQuorum.
-func getPeerUptimes(peers adminPeers) (time.Duration, error) {
-	// In a single node Erasure or FS backend setup the uptime of
-	// the setup is the uptime of the single minio server
-	// instance.
-	if !globalIsDistXL {
-		return UTCNow().Sub(globalBootTime), nil
-	}
-
-	uptimes := make(uptimeSlice, len(peers))
-
-	// Get up time of all servers.
-	wg := sync.WaitGroup{}
-	for i, peer := range peers {
-		wg.Add(1)
-		go func(idx int, peer adminPeer) {
-			defer wg.Done()
-			serverInfoData, rpcErr := peer.cmdRunner.ServerInfo()
-			uptimes[idx].uptime, uptimes[idx].err = serverInfoData.Properties.Uptime, rpcErr
-		}(i, peer)
-	}
-	wg.Wait()
-
-	// Sort uptimes in chronological order.
-	sort.Sort(uptimes)
-
-	// Pick the readQuorum'th uptime in chronological order. i.e,
-	// the time at which read quorum was (re-)established.
-	readQuorum := len(uptimes) / 2
-	validCount := 0
-	latestUptime := time.Duration(0)
-	for _, uptime := range uptimes {
-		if uptime.err != nil {
-			logger.LogIf(context.Background(), uptime.err)
-			continue
-		}
-
-		validCount++
-		if validCount >= readQuorum {
-			latestUptime = uptime.uptime
-			break
-		}
-	}
-
-	// Less than readQuorum "Admin.Uptime" RPC call returned
-	// successfully, so read-quorum unavailable.
-	if validCount < readQuorum {
-		return time.Duration(0), InsufficientReadQuorum{}
-	}
-
-	return latestUptime, nil
-}
-
-// getPeerConfig - Fetches config.json from all nodes in the setup and
-// returns the one that occurs in a majority of them.
-func getPeerConfig(peers adminPeers) ([]byte, error) {
-	if !globalIsDistXL {
-		return peers[0].cmdRunner.GetConfig()
-	}
-
-	errs := make([]error, len(peers))
-	configs := make([][]byte, len(peers))
-
-	// Get config from all servers.
-	wg := sync.WaitGroup{}
-	for i, peer := range peers {
-		wg.Add(1)
-		go func(idx int, peer adminPeer) {
-			defer wg.Done()
-			configs[idx], errs[idx] = peer.cmdRunner.GetConfig()
-		}(i, peer)
-	}
-	wg.Wait()
-
-	// Find the maximally occurring config among peers in a
-	// distributed setup.
-
-	serverConfigs := make([]serverConfig, len(peers))
-	for i, configBytes := range configs {
-		if errs[i] != nil {
-			continue
-		}
-
-		// Unmarshal the received config files.
-		err := json.Unmarshal(configBytes, &serverConfigs[i])
-		if err != nil {
-			reqInfo := (&logger.ReqInfo{}).AppendTags("peerAddress", peers[i].addr)
-			ctx := logger.SetReqInfo(context.Background(), reqInfo)
-			logger.LogIf(ctx, err)
-			return nil, err
-		}
-	}
-
-	configJSON, err := getValidServerConfig(serverConfigs, errs)
-	if err != nil {
-		logger.LogIf(context.Background(), err)
-		return nil, err
-	}
-
-	// Return the config.json that was present quorum or more
-	// number of disks.
-	return json.Marshal(configJSON)
-}
-
-// getValidServerConfig - finds the server config that is present in
-// quorum or more number of servers.
-func getValidServerConfig(serverConfigs []serverConfig, errs []error) (scv serverConfig, e error) {
-	// majority-based quorum
-	quorum := len(serverConfigs)/2 + 1
-
-	// Count the number of disks a config.json was found in.
-	configCounter := make([]int, len(serverConfigs))
-
-	// We group equal serverConfigs by the lowest index of the
-	// same value;  e.g, let us take the following serverConfigs
-	// in a 4-node setup,
-	// serverConfigs == [c1, c2, c1, c1]
-	// configCounter == [3, 1, 0, 0]
-	// c1, c2 are the only distinct values that appear.  c1 is
-	// identified by 0, the lowest index it appears in and c2 is
-	// identified by 1. So, we need to find the number of times
-	// each of these distinct values occur.
-
-	// Invariants:
-
-	// 1. At the beginning of the i-th iteration, the number of
-	// unique configurations seen so far is equal to the number of
-	// non-zero counter values in config[:i].
-
-	// 2. At the beginning of the i-th iteration, the sum of
-	// elements of configCounter[:i] is equal to the number of
-	// non-error configurations seen so far.
-
-	// For each of the serverConfig ...
-	for i := range serverConfigs {
-		// Skip nodes where getConfig failed.
-		if errs[i] != nil {
-			continue
-		}
-		// Check if it is equal to any of the configurations
-		// seen so far. If j == i is reached then we have an
-		// unseen configuration.
-		for j := 0; j <= i; j++ {
-			if j < i && configCounter[j] == 0 {
-				// serverConfigs[j] is known to be
-				// equal to a value that was already
-				// seen. See example above for
-				// clarity.
-				continue
-			} else if j < i && serverConfigs[i].ConfigDiff(&serverConfigs[j]) == "" {
-				// serverConfigs[i] is equal to
-				// serverConfigs[j], update
-				// serverConfigs[j]'s counter since it
-				// is the lower index.
-				configCounter[j]++
-				break
-			} else if j == i {
-				// serverConfigs[i] is equal to no
-				// other value seen before. It is
-				// unique so far.
-				configCounter[i] = 1
-				break
-			} // else invariants specified above are violated.
-		}
-	}
-
-	// We find the maximally occurring server config and check if
-	// there is quorum.
-	var configJSON serverConfig
-	maxOccurrence := 0
-	for i, count := range configCounter {
-		if maxOccurrence < count {
-			maxOccurrence = count
-			configJSON = serverConfigs[i]
-		}
-	}
-
-	// If quorum nodes don't agree.
-	if maxOccurrence < quorum {
-		return scv, errXLWriteQuorum
-	}
-
-	return configJSON, nil
-}
-
-// Write config contents into a temporary file on all nodes.
-func writeTmpConfigPeers(peers adminPeers, tmpFileName string, configBytes []byte) []error {
-	// For a single-node minio server setup.
-	if !globalIsDistXL {
-		err := peers[0].cmdRunner.WriteTmpConfig(tmpFileName, configBytes)
-		return []error{err}
-	}
-
-	errs := make([]error, len(peers))
-
-	// Write config into temporary file on all nodes.
-	wg := sync.WaitGroup{}
-	for i, peer := range peers {
-		wg.Add(1)
-		go func(idx int, peer adminPeer) {
-			defer wg.Done()
-			errs[idx] = peer.cmdRunner.WriteTmpConfig(tmpFileName, configBytes)
-		}(i, peer)
-	}
-	wg.Wait()
-
-	// Return bytes written and errors (if any) during writing
-	// temporary config file.
-	return errs
-}
-
-// Move config contents from the given temporary file onto config.json
-// on all nodes.
-func commitConfigPeers(peers adminPeers, tmpFileName string) []error {
-	// For a single-node minio server setup.
-	if !globalIsDistXL {
-		return []error{peers[0].cmdRunner.CommitConfig(tmpFileName)}
-	}
-
-	errs := make([]error, len(peers))
-
-	// Rename temporary config file into configDir/config.json on
-	// all nodes.
-	wg := sync.WaitGroup{}
-	for i, peer := range peers {
-		wg.Add(1)
-		go func(idx int, peer adminPeer) {
-			defer wg.Done()
-			errs[idx] = peer.cmdRunner.CommitConfig(tmpFileName)
-		}(i, peer)
-	}
-	wg.Wait()
-
-	// Return errors (if any) received during rename.
-	return errs
-}

cmd/admin-rpc-server.go

@@ -1,127 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2016, 2017, 2018 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cmd
-
-import (
-	"context"
-	"path"
-	"time"
-
-	"github.com/gorilla/mux"
-	"github.com/minio/minio/cmd/logger"
-	xrpc "github.com/minio/minio/cmd/rpc"
-)
-
-const adminServiceName = "Admin"
-const adminServiceSubPath = "/admin"
-
-var adminServicePath = path.Join(minioReservedBucketPath, adminServiceSubPath)
-
-// adminRPCReceiver - Admin RPC receiver for admin RPC server.
-type adminRPCReceiver struct {
-	local *localAdminClient
-}
-
-// SignalServiceArgs - provides the signal argument to SignalService RPC
-type SignalServiceArgs struct {
-	AuthArgs
-	Sig serviceSignal
-}
-
-// SignalService - Send a restart or stop signal to the service
-func (receiver *adminRPCReceiver) SignalService(args *SignalServiceArgs, reply *VoidReply) error {
-	return receiver.local.SignalService(args.Sig)
-}
-
-// ListLocksQuery - wraps ListLocks API's query values to send over RPC.
-type ListLocksQuery struct {
-	AuthArgs
-	Bucket   string
-	Prefix   string
-	Duration time.Duration
-}
-
-// ListLocks - lists locks held by requests handled by this server instance.
-func (receiver *adminRPCReceiver) ListLocks(args *ListLocksQuery, reply *[]VolumeLockInfo) (err error) {
-	*reply, err = receiver.local.ListLocks(args.Bucket, args.Prefix, args.Duration)
-	return err
-}
-
-// ServerInfo - returns the server info when object layer was initialized on this server.
-func (receiver *adminRPCReceiver) ServerInfo(args *AuthArgs, reply *ServerInfoData) (err error) {
-	*reply, err = receiver.local.ServerInfo()
-	return err
-}
-
-// GetConfig - returns the config.json of this server.
-func (receiver *adminRPCReceiver) GetConfig(args *AuthArgs, reply *[]byte) (err error) {
-	*reply, err = receiver.local.GetConfig()
-	return err
-}
-
-// ReInitFormatArgs - provides dry-run information to re-initialize format.json
-type ReInitFormatArgs struct {
-	AuthArgs
-	DryRun bool
-}
-
-// ReInitFormat - re-init 'format.json'
-func (receiver *adminRPCReceiver) ReInitFormat(args *ReInitFormatArgs, reply *VoidReply) error {
-	return receiver.local.ReInitFormat(args.DryRun)
-}
-
-// WriteConfigArgs - wraps the bytes to be written and temporary file name.
-type WriteConfigArgs struct {
-	AuthArgs
-	TmpFileName string
-	Buf         []byte
-}
-
-// WriteTmpConfig - writes the supplied config contents onto the
-// supplied temporary file.
-func (receiver *adminRPCReceiver) WriteTmpConfig(args *WriteConfigArgs, reply *VoidReply) error {
-	return receiver.local.WriteTmpConfig(args.TmpFileName, args.Buf)
-}
-
-// CommitConfigArgs - wraps the config file name that needs to be
-// committed into config.json on this node.
-type CommitConfigArgs struct {
-	AuthArgs
-	FileName string
-}
-
-// CommitConfig - Renames the temporary file into config.json on this node.
-func (receiver *adminRPCReceiver) CommitConfig(args *CommitConfigArgs, reply *VoidReply) error {
-	return receiver.local.CommitConfig(args.FileName)
-}
-
-// NewAdminRPCServer - returns new admin RPC server.
-func NewAdminRPCServer() (*xrpc.Server, error) {
-	rpcServer := xrpc.NewServer()
-	if err := rpcServer.RegisterName(adminServiceName, &adminRPCReceiver{&localAdminClient{}}); err != nil {
-		return nil, err
-	}
-	return rpcServer, nil
-}
-
-// registerAdminRPCRouter - creates and registers Admin RPC server and its router.
-func registerAdminRPCRouter(router *mux.Router) {
-	rpcServer, err := NewAdminRPCServer()
-	logger.FatalIf(err, "Unable to initialize Lock RPC Server", context.Background())
-	subrouter := router.PathPrefix(minioReservedBucketPath).Subrouter()
-	subrouter.Path(adminServiceSubPath).Handler(rpcServer)
-}

cmd/admin-rpc_test.go

@@ -1,611 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2018 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cmd
-
-import (
-	"encoding/json"
-	"io/ioutil"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"path/filepath"
-	"reflect"
-	"testing"
-	"time"
-
-	xnet "github.com/minio/minio/pkg/net"
-)
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// localAdminClient and AdminRPCClient are adminCmdRunner interface compatible,
-// hence below test functions are available for both clients.
-//
-///////////////////////////////////////////////////////////////////////////////
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// Admin RPC server, adminRPCReceiver and AdminRPCClient are
-// inter-dependent, below test functions are sufficient to test all of them.
-//
-///////////////////////////////////////////////////////////////////////////////
-
-func testAdminCmdRunnerSignalService(t *testing.T, client adminCmdRunner) {
-	tmpGlobalServiceSignalCh := globalServiceSignalCh
-	globalServiceSignalCh = make(chan serviceSignal, 10)
-	defer func() {
-		globalServiceSignalCh = tmpGlobalServiceSignalCh
-	}()
-
-	testCases := []struct {
-		signal    serviceSignal
-		expectErr bool
-	}{
-		{serviceRestart, false},
-		{serviceStop, false},
-		{serviceStatus, true},
-		{serviceSignal(100), true},
-	}
-
-	for i, testCase := range testCases {
-		err := client.SignalService(testCase.signal)
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func testAdminCmdRunnerReInitFormat(t *testing.T, client adminCmdRunner) {
-	tmpGlobalObjectAPI := globalObjectAPI
-	defer func() {
-		globalObjectAPI = tmpGlobalObjectAPI
-	}()
-
-	testCases := []struct {
-		objectAPI ObjectLayer
-		dryRun    bool
-		expectErr bool
-	}{
-		{&DummyObjectLayer{}, true, false},
-		{&DummyObjectLayer{}, false, false},
-		{nil, true, true},
-		{nil, false, true},
-	}
-
-	for i, testCase := range testCases {
-		globalObjectAPI = testCase.objectAPI
-		err := client.ReInitFormat(testCase.dryRun)
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func testAdminCmdRunnerListLocks(t *testing.T, client adminCmdRunner) {
-	tmpGlobalObjectAPI := globalObjectAPI
-	defer func() {
-		globalObjectAPI = tmpGlobalObjectAPI
-	}()
-
-	testCases := []struct {
-		objectAPI ObjectLayer
-		expectErr bool
-	}{
-		{&DummyObjectLayer{}, false},
-		{nil, true},
-	}
-
-	for i, testCase := range testCases {
-		globalObjectAPI = testCase.objectAPI
-		_, err := client.ListLocks("", "", time.Duration(0))
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func testAdminCmdRunnerServerInfo(t *testing.T, client adminCmdRunner) {
-	tmpGlobalBootTime := globalBootTime
-	tmpGlobalObjectAPI := globalObjectAPI
-	tmpGlobalConnStats := globalConnStats
-	tmpGlobalHTTPStats := globalHTTPStats
-	tmpGlobalNotificationSys := globalNotificationSys
-	defer func() {
-		globalBootTime = tmpGlobalBootTime
-		globalObjectAPI = tmpGlobalObjectAPI
-		globalConnStats = tmpGlobalConnStats
-		globalHTTPStats = tmpGlobalHTTPStats
-		globalNotificationSys = tmpGlobalNotificationSys
-	}()
-
-	endpoints := new(EndpointList)
-
-	notificationSys := NewNotificationSys(globalServerConfig, *endpoints)
-
-	testCases := []struct {
-		bootTime        time.Time
-		objectAPI       ObjectLayer
-		connStats       *ConnStats
-		httpStats       *HTTPStats
-		notificationSys *NotificationSys
-		expectErr       bool
-	}{
-		{UTCNow(), &DummyObjectLayer{}, newConnStats(), newHTTPStats(), notificationSys, false},
-		{time.Time{}, nil, nil, nil, nil, true},
-		{UTCNow(), nil, nil, nil, nil, true},
-	}
-
-	for i, testCase := range testCases {
-		globalBootTime = testCase.bootTime
-		globalObjectAPI = testCase.objectAPI
-		globalConnStats = testCase.connStats
-		globalHTTPStats = testCase.httpStats
-		globalNotificationSys = testCase.notificationSys
-		_, err := client.ServerInfo()
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func testAdminCmdRunnerGetConfig(t *testing.T, client adminCmdRunner) {
-	tmpGlobalServerConfig := globalServerConfig
-	defer func() {
-		globalServerConfig = tmpGlobalServerConfig
-	}()
-
-	config := newServerConfig()
-
-	testCases := []struct {
-		config    *serverConfig
-		expectErr bool
-	}{
-		{globalServerConfig, false},
-		{config, false},
-	}
-
-	for i, testCase := range testCases {
-		globalServerConfig = testCase.config
-		_, err := client.GetConfig()
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func testAdminCmdRunnerWriteTmpConfig(t *testing.T, client adminCmdRunner) {
-	tmpConfigDir := configDir
-	defer func() {
-		configDir = tmpConfigDir
-	}()
-
-	tempDir, err := ioutil.TempDir("", ".AdminCmdRunnerWriteTmpConfig.")
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-	defer os.RemoveAll(tempDir)
-	configDir = &ConfigDir{dir: tempDir}
-
-	testCases := []struct {
-		tmpFilename string
-		configBytes []byte
-		expectErr   bool
-	}{
-		{"config1.json", []byte(`{"version":"23","region":"us-west-1a"}`), false},
-		// Overwrite test.
-		{"config1.json", []byte(`{"version":"23","region":"us-west-1a","browser":"on"}`), false},
-		{"config2.json", []byte{}, false},
-		{"config3.json", nil, false},
-	}
-
-	for i, testCase := range testCases {
-		err := client.WriteTmpConfig(testCase.tmpFilename, testCase.configBytes)
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func testAdminCmdRunnerCommitConfig(t *testing.T, client adminCmdRunner) {
-	tmpConfigDir := configDir
-	defer func() {
-		configDir = tmpConfigDir
-	}()
-
-	tempDir, err := ioutil.TempDir("", ".AdminCmdRunnerCommitConfig.")
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-	defer os.RemoveAll(tempDir)
-	configDir = &ConfigDir{dir: tempDir}
-	err = ioutil.WriteFile(filepath.Join(tempDir, "config.json"), []byte{}, os.ModePerm)
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-
-	err = client.WriteTmpConfig("config1.json", []byte(`{"version":"23","region":"us-west-1a"}`))
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-
-	testCases := []struct {
-		tmpFilename string
-		expectErr   bool
-	}{
-		{"config1.json", false},
-		{"config2.json", true},
-	}
-
-	for i, testCase := range testCases {
-		err := client.CommitConfig(testCase.tmpFilename)
-		expectErr := (err != nil)
-
-		if expectErr != testCase.expectErr {
-			t.Fatalf("case %v: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
-		}
-	}
-}
-
-func newAdminRPCHTTPServerClient(t *testing.T) (*httptest.Server, *AdminRPCClient, *serverConfig) {
-	rpcServer, err := NewAdminRPCServer()
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-
-	httpServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		rpcServer.ServeHTTP(w, r)
-	}))
-
-	url, err := xnet.ParseURL(httpServer.URL)
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-
-	host, err := xnet.ParseHost(url.Host)
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-
-	prevGlobalServerConfig := globalServerConfig
-	globalServerConfig = newServerConfig()
-
-	rpcClient, err := NewAdminRPCClient(host)
-	if err != nil {
-		t.Fatalf("unexpected error %v", err)
-	}
-
-	return httpServer, rpcClient, prevGlobalServerConfig
-}
-
-func TestAdminRPCClientSignalService(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerSignalService(t, rpcClient)
-}
-
-func TestAdminRPCClientReInitFormat(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerReInitFormat(t, rpcClient)
-}
-
-func TestAdminRPCClientListLocks(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerListLocks(t, rpcClient)
-}
-
-func TestAdminRPCClientServerInfo(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerServerInfo(t, rpcClient)
-}
-
-func TestAdminRPCClientGetConfig(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerGetConfig(t, rpcClient)
-}
-
-func TestAdminRPCClientWriteTmpConfig(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerWriteTmpConfig(t, rpcClient)
-}
-
-func TestAdminRPCClientCommitConfig(t *testing.T) {
-	httpServer, rpcClient, prevGlobalServerConfig := newAdminRPCHTTPServerClient(t)
-	defer httpServer.Close()
-	defer func() {
-		globalServerConfig = prevGlobalServerConfig
-	}()
-
-	testAdminCmdRunnerCommitConfig(t, rpcClient)
-}
-
-var (
-	config1 = []byte(`{
-	"version": "13",
-	"credential": {
-		"accessKey": "minio",
-		"secretKey": "minio123"
-	},
-	"region": "us-east-1",
-	"logger": {
-		"console": {
-			"enable": true,
-			"level": "debug"
-		},
-		"file": {
-			"enable": false,
-			"fileName": "",
-			"level": ""
-		}
-	},
-	"notify": {
-		"amqp": {
-			"1": {
-				"enable": false,
-				"url": "",
-				"exchange": "",
-				"routingKey": "",
-				"exchangeType": "",
-				"mandatory": false,
-				"immediate": false,
-				"durable": false,
-				"internal": false,
-				"noWait": false,
-				"autoDeleted": false
-			}
-		},
-		"nats": {
-			"1": {
-				"enable": false,
-				"address": "",
-				"subject": "",
-				"username": "",
-				"password": "",
-				"token": "",
-				"secure": false,
-				"pingInterval": 0,
-				"streaming": {
-					"enable": false,
-					"clusterID": "",
-					"clientID": "",
-					"async": false,
-					"maxPubAcksInflight": 0
-				}
-			}
-		},
-		"elasticsearch": {
-			"1": {
-				"enable": false,
-				"url": "",
-				"index": ""
-			}
-		},
-		"redis": {
-			"1": {
-				"enable": false,
-				"address": "",
-				"password": "",
-				"key": ""
-			}
-		},
-		"postgresql": {
-			"1": {
-				"enable": false,
-				"connectionString": "",
-				"table": "",
-				"host": "",
-				"port": "",
-				"user": "",
-				"password": "",
-				"database": ""
-			}
-		},
-		"kafka": {
-			"1": {
-				"enable": false,
-				"brokers": null,
-				"topic": ""
-			}
-		},
-		"webhook": {
-			"1": {
-				"enable": false,
-				"endpoint": ""
-			}
-		}
-	}
-}
-`)
-	// diff from config1 - amqp.Enable is True
-	config2 = []byte(`{
-	"version": "13",
-	"credential": {
-		"accessKey": "minio",
-		"secretKey": "minio123"
-	},
-	"region": "us-east-1",
-	"logger": {
-		"console": {
-			"enable": true,
-			"level": "debug"
-		},
-		"file": {
-			"enable": false,
-			"fileName": "",
-			"level": ""
-		}
-	},
-	"notify": {
-		"amqp": {
-			"1": {
-				"enable": true,
-				"url": "",
-				"exchange": "",
-				"routingKey": "",
-				"exchangeType": "",
-				"mandatory": false,
-				"immediate": false,
-				"durable": false,
-				"internal": false,
-				"noWait": false,
-				"autoDeleted": false
-			}
-		},
-		"nats": {
-			"1": {
-				"enable": false,
-				"address": "",
-				"subject": "",
-				"username": "",
-				"password": "",
-				"token": "",
-				"secure": false,
-				"pingInterval": 0,
-				"streaming": {
-					"enable": false,
-					"clusterID": "",
-					"clientID": "",
-					"async": false,
-					"maxPubAcksInflight": 0
-				}
-			}
-		},
-		"elasticsearch": {
-			"1": {
-				"enable": false,
-				"url": "",
-				"index": ""
-			}
-		},
-		"redis": {
-			"1": {
-				"enable": false,
-				"address": "",
-				"password": "",
-				"key": ""
-			}
-		},
-		"postgresql": {
-			"1": {
-				"enable": false,
-				"connectionString": "",
-				"table": "",
-				"host": "",
-				"port": "",
-				"user": "",
-				"password": "",
-				"database": ""
-			}
-		},
-		"kafka": {
-			"1": {
-				"enable": false,
-				"brokers": null,
-				"topic": ""
-			}
-		},
-		"webhook": {
-			"1": {
-				"enable": false,
-				"endpoint": ""
-			}
-		}
-	}
-}
-`)
-)
-
-// TestGetValidServerConfig - test for getValidServerConfig.
-func TestGetValidServerConfig(t *testing.T) {
-	var c1, c2 serverConfig
-	err := json.Unmarshal(config1, &c1)
-	if err != nil {
-		t.Fatalf("json unmarshal of %s failed: %v", string(config1), err)
-	}
-
-	err = json.Unmarshal(config2, &c2)
-	if err != nil {
-		t.Fatalf("json unmarshal of %s failed: %v", string(config2), err)
-	}
-
-	// Valid config.
-	noErrs := []error{nil, nil, nil, nil}
-	serverConfigs := []serverConfig{c1, c2, c1, c1}
-	validConfig, err := getValidServerConfig(serverConfigs, noErrs)
-	if err != nil {
-		t.Errorf("Expected a valid config but received %v instead", err)
-	}
-
-	if !reflect.DeepEqual(validConfig, c1) {
-		t.Errorf("Expected valid config to be %v but received %v", config1, validConfig)
-	}
-
-	// Invalid config - no quorum.
-	serverConfigs = []serverConfig{c1, c2, c2, c1}
-	_, err = getValidServerConfig(serverConfigs, noErrs)
-	if err != errXLWriteQuorum {
-		t.Errorf("Expected to fail due to lack of quorum but received %v", err)
-	}
-
-	// All errors
-	allErrs := []error{errDiskNotFound, errDiskNotFound, errDiskNotFound, errDiskNotFound}
-	serverConfigs = []serverConfig{{}, {}, {}, {}}
-	_, err = getValidServerConfig(serverConfigs, allErrs)
-	if err != errXLWriteQuorum {
-		t.Errorf("Expected to fail due to lack of quorum but received %v", err)
-	}
-}

cmd/api-datatypes.go

@@ -23,6 +23,8 @@ import (
 const (
 	// Response request id.
 	responseRequestIDKey = "x-amz-request-id"
+	// Deployment id.
+	responseDeploymentIDKey = "x-minio-deployment-id"
 )
 
 // ObjectIdentifier carries key name for the object to delete.

cmd/api-errors.go

@@ -22,6 +22,13 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/Azure/azure-sdk-for-go/storage"
+	"github.com/aliyun/aliyun-oss-go-sdk/oss"
+	"google.golang.org/api/googleapi"
+
+	minio "github.com/minio/minio-go"
+	"github.com/minio/minio/cmd/crypto"
+	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/dns"
 	"github.com/minio/minio/pkg/event"
@@ -83,6 +90,7 @@ const (
 	ErrNoSuchBucketPolicy
 	ErrNoSuchKey
 	ErrNoSuchUpload
+	ErrNoSuchVersion
 	ErrNotImplemented
 	ErrPreconditionFailed
 	ErrRequestTimeTooSkewed
@@ -127,8 +135,12 @@ const (
 	ErrMaximumExpires
 	ErrSlowDown
 	ErrInvalidPrefixMarker
+	ErrBadRequest
 	// Add new error codes here.
 
+	// SSE-S3 related API errors
+	ErrInvalidEncryptionMethod
+
 	// Server-Side-Encryption (with Customer provided key) related API errors.
 	ErrInsecureSSECustomerRequest
 	ErrSSEMultipartEncrypted
@@ -140,6 +152,12 @@ const (
 	ErrMissingSSECustomerKeyMD5
 	ErrSSECustomerKeyMD5Mismatch
 	ErrInvalidSSECustomerParameters
+	ErrIncompatibleEncryptionMethod
+	ErrKMSNotConfigured
+	ErrKMSAuthFailure
+
+	ErrNoAccessKey
+	ErrInvalidToken
 
 	// Bucket notification related errors.
 	ErrEventNotification
@@ -178,14 +196,19 @@ const (
 	// new error codes here.
 
 	ErrMalformedJSON
+	ErrAdminNoSuchUser
+	ErrAdminNoSuchPolicy
+	ErrAdminInvalidArgument
 	ErrAdminInvalidAccessKey
 	ErrAdminInvalidSecretKey
 	ErrAdminConfigNoQuorum
 	ErrAdminConfigTooLarge
 	ErrAdminConfigBadJSON
+	ErrAdminConfigDuplicateKeys
 	ErrAdminCredentialsMismatch
 	ErrInsecureClientRequest
 	ErrObjectTampered
+
 	ErrHealNotImplemented
 	ErrHealNoSuchProcess
 	ErrHealInvalidClientToken
@@ -193,11 +216,112 @@ const (
 	ErrHealAlreadyRunning
 	ErrHealOverlappingPaths
 	ErrIncorrectContinuationToken
+
+	// S3 Select Errors
+	ErrEmptyRequestBody
+	ErrUnsupportedFunction
+	ErrInvalidExpressionType
+	ErrBusy
+	ErrUnauthorizedAccess
+	ErrExpressionTooLong
+	ErrIllegalSQLFunctionArgument
+	ErrInvalidKeyPath
+	ErrInvalidCompressionFormat
+	ErrInvalidFileHeaderInfo
+	ErrInvalidJSONType
+	ErrInvalidQuoteFields
+	ErrInvalidRequestParameter
+	ErrInvalidDataType
+	ErrInvalidTextEncoding
+	ErrInvalidDataSource
+	ErrInvalidTableAlias
+	ErrMissingRequiredParameter
+	ErrObjectSerializationConflict
+	ErrUnsupportedSQLOperation
+	ErrUnsupportedSQLStructure
+	ErrUnsupportedSyntax
+	ErrUnsupportedRangeHeader
+	ErrLexerInvalidChar
+	ErrLexerInvalidOperator
+	ErrLexerInvalidLiteral
+	ErrLexerInvalidIONLiteral
+	ErrParseExpectedDatePart
+	ErrParseExpectedKeyword
+	ErrParseExpectedTokenType
+	ErrParseExpected2TokenTypes
+	ErrParseExpectedNumber
+	ErrParseExpectedRightParenBuiltinFunctionCall
+	ErrParseExpectedTypeName
+	ErrParseExpectedWhenClause
+	ErrParseUnsupportedToken
+	ErrParseUnsupportedLiteralsGroupBy
+	ErrParseExpectedMember
+	ErrParseUnsupportedSelect
+	ErrParseUnsupportedCase
+	ErrParseUnsupportedCaseClause
+	ErrParseUnsupportedAlias
+	ErrParseUnsupportedSyntax
+	ErrParseUnknownOperator
+	ErrParseMissingIdentAfterAt
+	ErrParseUnexpectedOperator
+	ErrParseUnexpectedTerm
+	ErrParseUnexpectedToken
+	ErrParseUnexpectedKeyword
+	ErrParseExpectedExpression
+	ErrParseExpectedLeftParenAfterCast
+	ErrParseExpectedLeftParenValueConstructor
+	ErrParseExpectedLeftParenBuiltinFunctionCall
+	ErrParseExpectedArgumentDelimiter
+	ErrParseCastArity
+	ErrParseInvalidTypeParam
+	ErrParseEmptySelect
+	ErrParseSelectMissingFrom
+	ErrParseExpectedIdentForGroupName
+	ErrParseExpectedIdentForAlias
+	ErrParseUnsupportedCallWithStar
+	ErrParseNonUnaryAgregateFunctionCall
+	ErrParseMalformedJoin
+	ErrParseExpectedIdentForAt
+	ErrParseAsteriskIsNotAloneInSelectList
+	ErrParseCannotMixSqbAndWildcardInSelectList
+	ErrParseInvalidContextForWildcardInSelectList
+	ErrIncorrectSQLFunctionArgumentType
+	ErrValueParseFailure
+	ErrEvaluatorInvalidArguments
+	ErrIntegerOverflow
+	ErrLikeInvalidInputs
+	ErrCastFailed
+	ErrInvalidCast
+	ErrEvaluatorInvalidTimestampFormatPattern
+	ErrEvaluatorInvalidTimestampFormatPatternSymbolForParsing
+	ErrEvaluatorTimestampFormatPatternDuplicateFields
+	ErrEvaluatorTimestampFormatPatternHourClockAmPmMismatch
+	ErrEvaluatorUnterminatedTimestampFormatPatternToken
+	ErrEvaluatorInvalidTimestampFormatPatternToken
+	ErrEvaluatorInvalidTimestampFormatPatternSymbol
+	ErrEvaluatorBindingDoesNotExist
+	ErrMissingHeaders
+	ErrInvalidColumnIndex
+
+	ErrAdminConfigNotificationTargetsFailed
+	ErrAdminProfilerNotEnabled
+	ErrInvalidDecompressedSize
+	ErrAddUserInvalidArgument
 )
 
+type errorCodeMap map[APIErrorCode]APIError
+
+func (e errorCodeMap) ToAPIErr(errCode APIErrorCode) APIError {
+	apiErr, ok := e[errCode]
+	if !ok {
+		return e[ErrInternalError]
+	}
+	return apiErr
+}
+
 // error code to APIError structure, these fields carry respective
 // descriptions for all the error responses.
-var errorCodeResponse = map[APIErrorCode]APIError{
+var errorCodes = errorCodeMap{
 	ErrInvalidCopyDest: {
 		Code:           "InvalidRequest",
 		Description:    "This copy request is illegal because it is trying to copy an object to itself without changing the object's metadata, storage class, website redirect location or encryption attributes.",
@@ -338,6 +462,11 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "The specified multipart upload does not exist. The upload ID may be invalid, or the upload may have been aborted or completed.",
 		HTTPStatusCode: http.StatusNotFound,
 	},
+	ErrNoSuchVersion: {
+		Code:           "NoSuchVersion",
+		Description:    "Indicates that the version ID specified in the request does not match an existing version.",
+		HTTPStatusCode: http.StatusNotFound,
+	},
 	ErrNotImplemented: {
 		Code:           "NotImplemented",
 		Description:    "A header you provided implies functionality that is not implemented",
@@ -540,6 +669,11 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "Invalid marker prefix combination",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrBadRequest: {
+		Code:           "BadRequest",
+		Description:    "400 BadRequest",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 
 	// FIXME: Actual XML error response also contains the header which missed in list of signed header parameters.
 	ErrUnsignedHeaders: {
@@ -629,6 +763,11 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "Your metadata headers exceed the maximum allowed metadata size.",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrInvalidEncryptionMethod: {
+		Code:           "InvalidRequest",
+		Description:    "The encryption method specified is not supported",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrInsecureSSECustomerRequest: {
 		Code:           "InvalidRequest",
 		Description:    "Requests specifying Server Side Encryption with Customer provided keys must be made over a secure connection.",
@@ -679,6 +818,31 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "The provided encryption parameters did not match the ones used originally.",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrIncompatibleEncryptionMethod: {
+		Code:           "InvalidArgument",
+		Description:    "Server side encryption specified with both SSE-C and SSE-S3 headers",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrKMSNotConfigured: {
+		Code:           "InvalidArgument",
+		Description:    "Server side encryption specified but KMS is not configured",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrKMSAuthFailure: {
+		Code:           "InvalidArgument",
+		Description:    "Server side encryption specified but KMS authorization failed",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrNoAccessKey: {
+		Code:           "AccessDenied",
+		Description:    "No AWSAccessKey was presented",
+		HTTPStatusCode: http.StatusForbidden,
+	},
+	ErrInvalidToken: {
+		Code:           "InvalidTokenId",
+		Description:    "The security token included in the request is invalid",
+		HTTPStatusCode: http.StatusForbidden,
+	},
 
 	/// S3 extensions.
 	ErrContentSHA256Mismatch: {
@@ -738,6 +902,21 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "The JSON you provided was not well-formed or did not validate against our published format.",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrAdminNoSuchUser: {
+		Code:           "XMinioAdminNoSuchUser",
+		Description:    "The specified user does not exist.",
+		HTTPStatusCode: http.StatusNotFound,
+	},
+	ErrAdminNoSuchPolicy: {
+		Code:           "XMinioAdminNoSuchPolicy",
+		Description:    "The canned policy does not exist.",
+		HTTPStatusCode: http.StatusNotFound,
+	},
+	ErrAdminInvalidArgument: {
+		Code:           "XMinioAdminInvalidArgument",
+		Description:    "Invalid arguments specified.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrAdminInvalidAccessKey: {
 		Code:           "XMinioAdminInvalidAccessKey",
 		Description:    "The access key is invalid.",
@@ -756,14 +935,29 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 	ErrAdminConfigTooLarge: {
 		Code: "XMinioAdminConfigTooLarge",
 		Description: fmt.Sprintf("Configuration data provided exceeds the allowed maximum of %d bytes",
-			maxConfigJSONSize),
+			maxEConfigJSONSize),
 		HTTPStatusCode: http.StatusBadRequest,
 	},
 	ErrAdminConfigBadJSON: {
 		Code:           "XMinioAdminConfigBadJSON",
+		Description:    "JSON configuration provided is of incorrect format",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrAdminConfigDuplicateKeys: {
+		Code:           "XMinioAdminConfigDuplicateKeys",
 		Description:    "JSON configuration provided has objects with duplicate keys",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrAdminConfigNotificationTargetsFailed: {
+		Code:           "XMinioAdminNotificationTargetsTestFailed",
+		Description:    "Configuration update failed due an unsuccessful attempt to connect to one or more notification servers",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrAdminProfilerNotEnabled: {
+		Code:           "XMinioAdminProfilerNotEnabled",
+		Description:    "Unable to perform the requested operation because profiling is not enabled",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrAdminCredentialsMismatch: {
 		Code:           "XMinioAdminCredentialsMismatch",
 		Description:    "Credentials in config mismatch with server environment variables",
@@ -794,6 +988,7 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "X-Amz-Expires must be less than a week (in seconds); that is, the given X-Amz-Expires must be less than 604800 seconds",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+
 	// Generic Invalid-Request error. Should be used for response errors only for unlikely
 	// corner case errors for which introducing new APIErrorCode is not worth it. LogIf()
 	// should be used to log the error at the source of the error for debugging purposes.
@@ -842,21 +1037,460 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "The continuation token provided is incorrect",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	//S3 Select API Errors
+	ErrEmptyRequestBody: {
+		Code:           "EmptyRequestBody",
+		Description:    "Request body cannot be empty.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrUnsupportedFunction: {
+		Code:           "UnsupportedFunction",
+		Description:    "Encountered an unsupported SQL function.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidDataSource: {
+		Code:           "InvalidDataSource",
+		Description:    "Invalid data source type. Only CSV and JSON are supported at this time.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidExpressionType: {
+		Code:           "InvalidExpressionType",
+		Description:    "The ExpressionType is invalid. Only SQL expressions are supported at this time.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrBusy: {
+		Code:           "Busy",
+		Description:    "The service is unavailable. Please retry.",
+		HTTPStatusCode: http.StatusServiceUnavailable,
+	},
+	ErrUnauthorizedAccess: {
+		Code:           "UnauthorizedAccess",
+		Description:    "You are not authorized to perform this operation",
+		HTTPStatusCode: http.StatusUnauthorized,
+	},
+	ErrExpressionTooLong: {
+		Code:           "ExpressionTooLong",
+		Description:    "The SQL expression is too long: The maximum byte-length for the SQL expression is 256 KB.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrIllegalSQLFunctionArgument: {
+		Code:           "IllegalSqlFunctionArgument",
+		Description:    "Illegal argument was used in the SQL function.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidKeyPath: {
+		Code:           "InvalidKeyPath",
+		Description:    "Key path in the SQL expression is invalid.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidCompressionFormat: {
+		Code:           "InvalidCompressionFormat",
+		Description:    "The file is not in a supported compression format. Only GZIP is supported at this time.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidFileHeaderInfo: {
+		Code:           "InvalidFileHeaderInfo",
+		Description:    "The FileHeaderInfo is invalid. Only NONE, USE, and IGNORE are supported.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidJSONType: {
+		Code:           "InvalidJsonType",
+		Description:    "The JsonType is invalid. Only DOCUMENT and LINES are supported at this time.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidQuoteFields: {
+		Code:           "InvalidQuoteFields",
+		Description:    "The QuoteFields is invalid. Only ALWAYS and ASNEEDED are supported.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidRequestParameter: {
+		Code:           "InvalidRequestParameter",
+		Description:    "The value of a parameter in SelectRequest element is invalid. Check the service API documentation and try again.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidDataType: {
+		Code:           "InvalidDataType",
+		Description:    "The SQL expression contains an invalid data type.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidTextEncoding: {
+		Code:           "InvalidTextEncoding",
+		Description:    "Invalid encoding type. Only UTF-8 encoding is supported at this time.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidTableAlias: {
+		Code:           "InvalidTableAlias",
+		Description:    "The SQL expression contains an invalid table alias.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrMissingRequiredParameter: {
+		Code:           "MissingRequiredParameter",
+		Description:    "The SelectRequest entity is missing a required parameter. Check the service documentation and try again.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrObjectSerializationConflict: {
+		Code:           "ObjectSerializationConflict",
+		Description:    "The SelectRequest entity can only contain one of CSV or JSON. Check the service documentation and try again.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrUnsupportedSQLOperation: {
+		Code:           "UnsupportedSqlOperation",
+		Description:    "Encountered an unsupported SQL operation.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrUnsupportedSQLStructure: {
+		Code:           "UnsupportedSqlStructure",
+		Description:    "Encountered an unsupported SQL structure. Check the SQL Reference.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrUnsupportedSyntax: {
+		Code:           "UnsupportedSyntax",
+		Description:    "Encountered invalid syntax.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrUnsupportedRangeHeader: {
+		Code:           "UnsupportedRangeHeader",
+		Description:    "Range header is not supported for this operation.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrLexerInvalidChar: {
+		Code:           "LexerInvalidChar",
+		Description:    "The SQL expression contains an invalid character.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrLexerInvalidOperator: {
+		Code:           "LexerInvalidOperator",
+		Description:    "The SQL expression contains an invalid literal.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrLexerInvalidLiteral: {
+		Code:           "LexerInvalidLiteral",
+		Description:    "The SQL expression contains an invalid operator.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrLexerInvalidIONLiteral: {
+		Code:           "LexerInvalidIONLiteral",
+		Description:    "The SQL expression contains an invalid operator.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedDatePart: {
+		Code:           "ParseExpectedDatePart",
+		Description:    "Did not find the expected date part in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedKeyword: {
+		Code:           "ParseExpectedKeyword",
+		Description:    "Did not find the expected keyword in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedTokenType: {
+		Code:           "ParseExpectedTokenType",
+		Description:    "Did not find the expected token in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpected2TokenTypes: {
+		Code:           "ParseExpected2TokenTypes",
+		Description:    "Did not find the expected token in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedNumber: {
+		Code:           "ParseExpectedNumber",
+		Description:    "Did not find the expected number in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedRightParenBuiltinFunctionCall: {
+		Code:           "ParseExpectedRightParenBuiltinFunctionCall",
+		Description:    "Did not find the expected right parenthesis character in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedTypeName: {
+		Code:           "ParseExpectedTypeName",
+		Description:    "Did not find the expected type name in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedWhenClause: {
+		Code:           "ParseExpectedWhenClause",
+		Description:    "Did not find the expected WHEN clause in the SQL expression. CASE is not supported.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedToken: {
+		Code:           "ParseUnsupportedToken",
+		Description:    "The SQL expression contains an unsupported token.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedLiteralsGroupBy: {
+		Code:           "ParseUnsupportedLiteralsGroupBy",
+		Description:    "The SQL expression contains an unsupported use of GROUP BY.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedMember: {
+		Code:           "ParseExpectedMember",
+		Description:    "The SQL expression contains an unsupported use of MEMBER.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedSelect: {
+		Code:           "ParseUnsupportedSelect",
+		Description:    "The SQL expression contains an unsupported use of SELECT.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedCase: {
+		Code:           "ParseUnsupportedCase",
+		Description:    "The SQL expression contains an unsupported use of CASE.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedCaseClause: {
+		Code:           "ParseUnsupportedCaseClause",
+		Description:    "The SQL expression contains an unsupported use of CASE.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedAlias: {
+		Code:           "ParseUnsupportedAlias",
+		Description:    "The SQL expression contains an unsupported use of ALIAS.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedSyntax: {
+		Code:           "ParseUnsupportedSyntax",
+		Description:    "The SQL expression contains unsupported syntax.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnknownOperator: {
+		Code:           "ParseUnknownOperator",
+		Description:    "The SQL expression contains an invalid operator.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseMissingIdentAfterAt: {
+		Code:           "ParseMissingIdentAfterAt",
+		Description:    "Did not find the expected identifier after the @ symbol in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnexpectedOperator: {
+		Code:           "ParseUnexpectedOperator",
+		Description:    "The SQL expression contains an unexpected operator.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnexpectedTerm: {
+		Code:           "ParseUnexpectedTerm",
+		Description:    "The SQL expression contains an unexpected term.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnexpectedToken: {
+		Code:           "ParseUnexpectedToken",
+		Description:    "The SQL expression contains an unexpected token.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnexpectedKeyword: {
+		Code:           "ParseUnexpectedKeyword",
+		Description:    "The SQL expression contains an unexpected keyword.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedExpression: {
+		Code:           "ParseExpectedExpression",
+		Description:    "Did not find the expected SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedLeftParenAfterCast: {
+		Code:           "ParseExpectedLeftParenAfterCast",
+		Description:    "Did not find expected the left parenthesis in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedLeftParenValueConstructor: {
+		Code:           "ParseExpectedLeftParenValueConstructor",
+		Description:    "Did not find expected the left parenthesis in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedLeftParenBuiltinFunctionCall: {
+		Code:           "ParseExpectedLeftParenBuiltinFunctionCall",
+		Description:    "Did not find the expected left parenthesis in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedArgumentDelimiter: {
+		Code:           "ParseExpectedArgumentDelimiter",
+		Description:    "Did not find the expected argument delimiter in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseCastArity: {
+		Code:           "ParseCastArity",
+		Description:    "The SQL expression CAST has incorrect arity.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseInvalidTypeParam: {
+		Code:           "ParseInvalidTypeParam",
+		Description:    "The SQL expression contains an invalid parameter value.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseEmptySelect: {
+		Code:           "ParseEmptySelect",
+		Description:    "The SQL expression contains an empty SELECT.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseSelectMissingFrom: {
+		Code:           "ParseSelectMissingFrom",
+		Description:    "GROUP is not supported in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedIdentForGroupName: {
+		Code:           "ParseExpectedIdentForGroupName",
+		Description:    "GROUP is not supported in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedIdentForAlias: {
+		Code:           "ParseExpectedIdentForAlias",
+		Description:    "Did not find the expected identifier for the alias in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseUnsupportedCallWithStar: {
+		Code:           "ParseUnsupportedCallWithStar",
+		Description:    "Only COUNT with (*) as a parameter is supported in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseNonUnaryAgregateFunctionCall: {
+		Code:           "ParseNonUnaryAgregateFunctionCall",
+		Description:    "Only one argument is supported for aggregate functions in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseMalformedJoin: {
+		Code:           "ParseMalformedJoin",
+		Description:    "JOIN is not supported in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseExpectedIdentForAt: {
+		Code:           "ParseExpectedIdentForAt",
+		Description:    "Did not find the expected identifier for AT name in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseAsteriskIsNotAloneInSelectList: {
+		Code:           "ParseAsteriskIsNotAloneInSelectList",
+		Description:    "Other expressions are not allowed in the SELECT list when '*' is used without dot notation in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseCannotMixSqbAndWildcardInSelectList: {
+		Code:           "ParseCannotMixSqbAndWildcardInSelectList",
+		Description:    "Cannot mix [] and * in the same expression in a SELECT list in SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrParseInvalidContextForWildcardInSelectList: {
+		Code:           "ParseInvalidContextForWildcardInSelectList",
+		Description:    "Invalid use of * in SELECT list in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrIncorrectSQLFunctionArgumentType: {
+		Code:           "IncorrectSqlFunctionArgumentType",
+		Description:    "Incorrect type of arguments in function call in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrValueParseFailure: {
+		Code:           "ValueParseFailure",
+		Description:    "Time stamp parse failure in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorInvalidArguments: {
+		Code:           "EvaluatorInvalidArguments",
+		Description:    "Incorrect number of arguments in the function call in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrIntegerOverflow: {
+		Code:           "IntegerOverflow",
+		Description:    "Int overflow or underflow in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrLikeInvalidInputs: {
+		Code:           "LikeInvalidInputs",
+		Description:    "Invalid argument given to the LIKE clause in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrCastFailed: {
+		Code:           "CastFailed",
+		Description:    "Attempt to convert from one data type to another using CAST failed in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidCast: {
+		Code:           "InvalidCast",
+		Description:    "Attempt to convert from one data type to another using CAST failed in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorInvalidTimestampFormatPattern: {
+		Code:           "EvaluatorInvalidTimestampFormatPattern",
+		Description:    "Time stamp format pattern requires additional fields in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorInvalidTimestampFormatPatternSymbolForParsing: {
+		Code:           "EvaluatorInvalidTimestampFormatPatternSymbolForParsing",
+		Description:    "Time stamp format pattern contains a valid format symbol that cannot be applied to time stamp parsing in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorTimestampFormatPatternDuplicateFields: {
+		Code:           "EvaluatorTimestampFormatPatternDuplicateFields",
+		Description:    "Time stamp format pattern contains multiple format specifiers representing the time stamp field in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorTimestampFormatPatternHourClockAmPmMismatch: {
+		Code:           "EvaluatorUnterminatedTimestampFormatPatternToken",
+		Description:    "Time stamp format pattern contains unterminated token in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorUnterminatedTimestampFormatPatternToken: {
+		Code:           "EvaluatorInvalidTimestampFormatPatternToken",
+		Description:    "Time stamp format pattern contains an invalid token in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorInvalidTimestampFormatPatternToken: {
+		Code:           "EvaluatorInvalidTimestampFormatPatternToken",
+		Description:    "Time stamp format pattern contains an invalid token in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorInvalidTimestampFormatPatternSymbol: {
+		Code:           "EvaluatorInvalidTimestampFormatPatternSymbol",
+		Description:    "Time stamp format pattern contains an invalid symbol in the SQL expression.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrEvaluatorBindingDoesNotExist: {
+		Code:           "ErrEvaluatorBindingDoesNotExist",
+		Description:    "A column name or a path provided does not exist in the SQL expression",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrMissingHeaders: {
+		Code:           "MissingHeaders",
+		Description:    "Some headers in the query are missing from the file. Check the file and try again.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidColumnIndex: {
+		Code:           "InvalidColumnIndex",
+		Description:    "The column index is invalid. Please check the service documentation and try again.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrInvalidDecompressedSize: {
+		Code:           "XMinioInvalidDecompressedSize",
+		Description:    "The data provided is unfit for decompression",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrAddUserInvalidArgument: {
+		Code:           "XMinioInvalidIAMCredentials",
+		Description:    "User is not allowed to be same as admin access key",
+		HTTPStatusCode: http.StatusConflict,
+	},
 	// Add your error structure here.
 }
 
 // toAPIErrorCode - Converts embedded errors. Convenience
 // function written to handle all cases where we have known types of
 // errors returned by underlying layers.
-func toAPIErrorCode(err error) (apiErr APIErrorCode) {
+func toAPIErrorCode(ctx context.Context, err error) (apiErr APIErrorCode) {
 	if err == nil {
 		return ErrNone
 	}
 
 	// Verify if the underlying error is signature mismatch.
 	switch err {
+	case errInvalidArgument:
+		apiErr = ErrAdminInvalidArgument
+	case errNoSuchUser:
+		apiErr = ErrAdminNoSuchUser
+	case errNoSuchPolicy:
+		apiErr = ErrAdminNoSuchPolicy
 	case errSignatureMismatch:
 		apiErr = ErrSignatureDoesNotMatch
+	case errInvalidRange:
+		apiErr = ErrInvalidRange
 	case errDataTooLarge:
 		apiErr = ErrEntityTooLarge
 	case errDataTooSmall:
@@ -866,17 +1500,19 @@ func toAPIErrorCode(err error) (apiErr APIErrorCode) {
 	case auth.ErrInvalidSecretKeyLength:
 		apiErr = ErrAdminInvalidSecretKey
 	// SSE errors
-	case errInsecureSSERequest:
-		apiErr = ErrInsecureSSECustomerRequest
-	case errInvalidSSEAlgorithm:
+	case errInvalidEncryptionParameters:
+		apiErr = ErrInvalidEncryptionParameters
+	case crypto.ErrInvalidEncryptionMethod:
+		apiErr = ErrInvalidEncryptionMethod
+	case crypto.ErrInvalidCustomerAlgorithm:
 		apiErr = ErrInvalidSSECustomerAlgorithm
-	case errInvalidSSEKey:
+	case crypto.ErrInvalidCustomerKey:
 		apiErr = ErrInvalidSSECustomerKey
-	case errMissingSSEKey:
+	case crypto.ErrMissingCustomerKey:
 		apiErr = ErrMissingSSECustomerKey
-	case errMissingSSEKeyMD5:
+	case crypto.ErrMissingCustomerKeyMD5:
 		apiErr = ErrMissingSSECustomerKeyMD5
-	case errSSEKeyMD5Mismatch:
+	case crypto.ErrCustomerKeyMD5Mismatch:
 		apiErr = ErrSSECustomerKeyMD5Mismatch
 	case errObjectTampered:
 		apiErr = ErrObjectTampered
@@ -884,12 +1520,24 @@ func toAPIErrorCode(err error) (apiErr APIErrorCode) {
 		apiErr = ErrSSEEncryptedObject
 	case errInvalidSSEParameters:
 		apiErr = ErrInvalidSSECustomerParameters
-	case errSSEKeyMismatch:
+	case crypto.ErrInvalidCustomerKey, crypto.ErrSecretKeyMismatch:
 		apiErr = ErrAccessDenied // no access without correct key
-	case context.Canceled, context.DeadlineExceeded:
+	case crypto.ErrIncompatibleEncryptionMethod:
+		apiErr = ErrIncompatibleEncryptionMethod
+	case errKMSNotConfigured:
+		apiErr = ErrKMSNotConfigured
+	case crypto.ErrKMSAuthLogin:
+		apiErr = ErrKMSAuthFailure
+	case errOperationTimedOut, context.Canceled, context.DeadlineExceeded:
 		apiErr = ErrOperationTimedOut
 	}
 
+	// Compression errors
+	switch err {
+	case errInvalidDecompressedSize:
+		apiErr = ErrInvalidDecompressedSize
+	}
+
 	if apiErr != ErrNone {
 		// If there was a match in the above switch case.
 		return apiErr
@@ -990,8 +1638,68 @@ func toAPIErrorCode(err error) (apiErr APIErrorCode) {
 		apiErr = ErrUnsupportedNotification
 	case BackendDown:
 		apiErr = ErrBackendDown
+	case crypto.Error:
+		apiErr = ErrObjectTampered
 	default:
 		apiErr = ErrInternalError
+		// Make sure to log the errors which we cannot translate
+		// to a meaningful S3 API errors. This is added to aid in
+		// debugging unexpected/unhandled errors.
+		logger.LogIf(ctx, err)
+	}
+
+	return apiErr
+}
+
+var noError = APIError{}
+
+// toAPIError - Converts embedded errors. Convenience
+// function written to handle all cases where we have known types of
+// errors returned by underlying layers.
+func toAPIError(ctx context.Context, err error) APIError {
+	if err == nil {
+		return noError
+	}
+
+	var apiErr = errorCodes.ToAPIErr(toAPIErrorCode(ctx, err))
+	if apiErr.Code == "InternalError" {
+		// If we see an internal error try to interpret
+		// any underlying errors if possible depending on
+		// their internal error types. This code is only
+		// useful with gateway implementations.
+		switch e := err.(type) {
+		case minio.ErrorResponse:
+			apiErr = APIError{
+				Code:           e.Code,
+				Description:    e.Message,
+				HTTPStatusCode: e.StatusCode,
+			}
+		case *googleapi.Error:
+			apiErr = APIError{
+				Code:           "XGCSInternalError",
+				Description:    e.Message,
+				HTTPStatusCode: e.Code,
+			}
+			// GCS may send multiple errors, just pick the first one
+			// since S3 only sends one Error XML response.
+			if len(e.Errors) >= 1 {
+				apiErr.Code = e.Errors[0].Reason
+
+			}
+		case storage.AzureStorageServiceError:
+			apiErr = APIError{
+				Code:           e.Code,
+				Description:    e.Message,
+				HTTPStatusCode: e.StatusCode,
+			}
+		case oss.ServiceError:
+			apiErr = APIError{
+				Code:           e.Code,
+				Description:    e.Message,
+				HTTPStatusCode: e.StatusCode,
+			}
+			// Add more Gateway SDKs here if any in future.
+		}
 	}
 
 	return apiErr
@@ -999,17 +1707,23 @@ func toAPIErrorCode(err error) (apiErr APIErrorCode) {
 
 // getAPIError provides API Error for input API error code.
 func getAPIError(code APIErrorCode) APIError {
-	return errorCodeResponse[code]
+	if apiErr, ok := errorCodes[code]; ok {
+		return apiErr
+	}
+	return errorCodes.ToAPIErr(ErrInternalError)
 }
 
 // getErrorResponse gets in standard error and resource value and
 // provides a encodable populated response values
-func getAPIErrorResponse(err APIError, resource, requestid string) APIErrorResponse {
+func getAPIErrorResponse(ctx context.Context, err APIError, resource, requestID, hostID string) APIErrorResponse {
+	reqInfo := logger.GetReqInfo(ctx)
 	return APIErrorResponse{
-		Code:      err.Code,
-		Message:   err.Description,
-		Resource:  resource,
-		RequestID: requestid,
-		HostID:    "3L137",
+		Code:       err.Code,
+		Message:    err.Description,
+		BucketName: reqInfo.BucketName,
+		Key:        reqInfo.ObjectName,
+		Resource:   resource,
+		RequestID:  requestID,
+		HostID:     hostID,
 	}
 }

cmd/api-errors_test.go

@@ -17,13 +17,15 @@
 package cmd
 
 import (
+	"context"
 	"errors"
 	"testing"
 
+	"github.com/minio/minio/cmd/crypto"
 	"github.com/minio/minio/pkg/hash"
 )
 
-var toAPIErrorCodeTests = []struct {
+var toAPIErrorTests = []struct {
 	err     error
 	errCode APIErrorCode
 }{
@@ -51,12 +53,11 @@ var toAPIErrorCodeTests = []struct {
 	{err: errSignatureMismatch, errCode: ErrSignatureDoesNotMatch},
 
 	// SSE-C errors
-	{err: errInsecureSSERequest, errCode: ErrInsecureSSECustomerRequest},
-	{err: errInvalidSSEAlgorithm, errCode: ErrInvalidSSECustomerAlgorithm},
-	{err: errMissingSSEKey, errCode: ErrMissingSSECustomerKey},
-	{err: errInvalidSSEKey, errCode: ErrInvalidSSECustomerKey},
-	{err: errMissingSSEKeyMD5, errCode: ErrMissingSSECustomerKeyMD5},
-	{err: errSSEKeyMD5Mismatch, errCode: ErrSSECustomerKeyMD5Mismatch},
+	{err: crypto.ErrInvalidCustomerAlgorithm, errCode: ErrInvalidSSECustomerAlgorithm},
+	{err: crypto.ErrMissingCustomerKey, errCode: ErrMissingSSECustomerKey},
+	{err: crypto.ErrInvalidCustomerKey, errCode: ErrInvalidSSECustomerKey},
+	{err: crypto.ErrMissingCustomerKeyMD5, errCode: ErrMissingSSECustomerKeyMD5},
+	{err: crypto.ErrCustomerKeyMD5Mismatch, errCode: ErrSSECustomerKeyMD5Mismatch},
 	{err: errObjectTampered, errCode: ErrObjectTampered},
 
 	{err: nil, errCode: ErrNone},
@@ -64,8 +65,9 @@ var toAPIErrorCodeTests = []struct {
 }
 
 func TestAPIErrCode(t *testing.T) {
-	for i, testCase := range toAPIErrorCodeTests {
-		errCode := toAPIErrorCode(testCase.err)
+	ctx := context.Background()
+	for i, testCase := range toAPIErrorTests {
+		errCode := toAPIErrorCode(ctx, testCase.err)
 		if errCode != testCase.errCode {
 			t.Errorf("Test %d: Expected error code %d, got %d", i+1, testCase.errCode, errCode)
 		}

cmd/api-headers.go

@@ -24,6 +24,8 @@ import (
 	"net/http"
 	"strconv"
 	"time"
+
+	"github.com/minio/minio/cmd/crypto"
 )
 
 // Returns a hexadecimal representation of time at the
@@ -34,13 +36,16 @@ func mustGetRequestID(t time.Time) string {
 
 // Write http common headers
 func setCommonHeaders(w http.ResponseWriter) {
-	w.Header().Set("Server", globalServerUserAgent)
+	w.Header().Set("Server", "Minio/"+ReleaseTag)
 	// Set `x-amz-bucket-region` only if region is set on the server
 	// by default minio uses an empty region.
 	if region := globalServerConfig.GetRegion(); region != "" {
 		w.Header().Set("X-Amz-Bucket-Region", region)
 	}
 	w.Header().Set("Accept-Ranges", "bytes")
+
+	// Remove sensitive information
+	crypto.RemoveSensitiveHeaders(w.Header())
 }
 
 // Encodes the response headers into XML format.
@@ -61,13 +66,10 @@ func encodeResponseJSON(response interface{}) []byte {
 }
 
 // Write object header
-func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, contentRange *httpRange) {
+func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, rs *HTTPRangeSpec) (err error) {
 	// set common headers
 	setCommonHeaders(w)
 
-	// Set content length.
-	w.Header().Set("Content-Length", strconv.FormatInt(objInfo.Size, 10))
-
 	// Set last modified time.
 	lastModified := objInfo.ModTime.UTC().Format(http.TimeFormat)
 	w.Header().Set("Last-Modified", lastModified)
@@ -95,11 +97,34 @@ func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, contentRange *h
 		w.Header().Set(k, v)
 	}
 
-	// for providing ranged content
-	if contentRange != nil && contentRange.offsetBegin > -1 {
-		// Override content-length
-		w.Header().Set("Content-Length", strconv.FormatInt(contentRange.getLength(), 10))
-		w.Header().Set("Content-Range", contentRange.String())
-		w.WriteHeader(http.StatusPartialContent)
+	var totalObjectSize int64
+	switch {
+	case crypto.IsEncrypted(objInfo.UserDefined):
+		totalObjectSize, err = objInfo.DecryptedSize()
+		if err != nil {
+			return err
+		}
+	case objInfo.IsCompressed():
+		totalObjectSize = objInfo.GetActualSize()
+		if totalObjectSize < 0 {
+			return errInvalidDecompressedSize
+		}
+	default:
+		totalObjectSize = objInfo.Size
 	}
+
+	// for providing ranged content
+	start, rangeLen, err := rs.GetOffsetLength(totalObjectSize)
+	if err != nil {
+		return err
+	}
+
+	// Set content length.
+	w.Header().Set("Content-Length", strconv.FormatInt(rangeLen, 10))
+	if rs != nil {
+		contentRange := fmt.Sprintf("bytes %d-%d/%d", start, start+rangeLen-1, totalObjectSize)
+		w.Header().Set("Content-Range", contentRange)
+	}
+
+	return nil
 }

cmd/api-resources.go

@@ -22,15 +22,22 @@ import (
 )
 
 // Parse bucket url queries
-func getListObjectsV1Args(values url.Values) (prefix, marker, delimiter string, maxkeys int, encodingType string) {
-	prefix = values.Get("prefix")
-	marker = values.Get("marker")
-	delimiter = values.Get("delimiter")
+func getListObjectsV1Args(values url.Values) (prefix, marker, delimiter string, maxkeys int, encodingType string, errCode APIErrorCode) {
+	errCode = ErrNone
+
 	if values.Get("max-keys") != "" {
-		maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
+		var err error
+		if maxkeys, err = strconv.Atoi(values.Get("max-keys")); err != nil {
+			errCode = ErrInvalidMaxKeys
+			return
+		}
 	} else {
 		maxkeys = maxObjectList
 	}
+
+	prefix = values.Get("prefix")
+	marker = values.Get("marker")
+	delimiter = values.Get("delimiter")
 	encodingType = values.Get("encoding-type")
 	return
 }
@@ -47,44 +54,69 @@ func getListObjectsV2Args(values url.Values) (prefix, token, startAfter, delimit
 		}
 	}
 
+	if values.Get("max-keys") != "" {
+		var err error
+		if maxkeys, err = strconv.Atoi(values.Get("max-keys")); err != nil {
+			errCode = ErrInvalidMaxKeys
+			return
+		}
+	} else {
+		maxkeys = maxObjectList
+	}
+
 	prefix = values.Get("prefix")
 	token = values.Get("continuation-token")
 	startAfter = values.Get("start-after")
 	delimiter = values.Get("delimiter")
-	if values.Get("max-keys") != "" {
-		maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
-	} else {
-		maxkeys = maxObjectList
-	}
 	fetchOwner = values.Get("fetch-owner") == "true"
 	encodingType = values.Get("encoding-type")
 	return
 }
 
 // Parse bucket url queries for ?uploads
-func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int, encodingType string) {
+func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int, encodingType string, errCode APIErrorCode) {
+	errCode = ErrNone
+
+	if values.Get("max-uploads") != "" {
+		var err error
+		if maxUploads, err = strconv.Atoi(values.Get("max-uploads")); err != nil {
+			errCode = ErrInvalidMaxUploads
+			return
+		}
+	} else {
+		maxUploads = maxUploadsList
+	}
+
 	prefix = values.Get("prefix")
 	keyMarker = values.Get("key-marker")
 	uploadIDMarker = values.Get("upload-id-marker")
 	delimiter = values.Get("delimiter")
-	if values.Get("max-uploads") != "" {
-		maxUploads, _ = strconv.Atoi(values.Get("max-uploads"))
-	} else {
-		maxUploads = maxUploadsList
-	}
 	encodingType = values.Get("encoding-type")
 	return
 }
 
 // Parse object url queries
-func getObjectResources(values url.Values) (uploadID string, partNumberMarker, maxParts int, encodingType string) {
-	uploadID = values.Get("uploadId")
-	partNumberMarker, _ = strconv.Atoi(values.Get("part-number-marker"))
+func getObjectResources(values url.Values) (uploadID string, partNumberMarker, maxParts int, encodingType string, errCode APIErrorCode) {
+	var err error
+	errCode = ErrNone
+
 	if values.Get("max-parts") != "" {
-		maxParts, _ = strconv.Atoi(values.Get("max-parts"))
+		if maxParts, err = strconv.Atoi(values.Get("max-parts")); err != nil {
+			errCode = ErrInvalidMaxParts
+			return
+		}
 	} else {
 		maxParts = maxPartsList
 	}
+
+	if values.Get("part-number-marker") != "" {
+		if partNumberMarker, err = strconv.Atoi(values.Get("part-number-marker")); err != nil {
+			errCode = ErrInvalidPartNumberMarker
+			return
+		}
+	}
+
+	uploadID = values.Get("uploadId")
 	encodingType = values.Get("encoding-type")
 	return
 }

cmd/api-resources_test.go

@@ -156,7 +156,10 @@ func TestListObjectsV1Resources(t *testing.T) {
 	}
 
 	for i, testCase := range testCases {
-		prefix, marker, delimiter, maxKeys, encodingType := getListObjectsV1Args(testCase.values)
+		prefix, marker, delimiter, maxKeys, encodingType, argsErr := getListObjectsV1Args(testCase.values)
+		if argsErr != ErrNone {
+			t.Errorf("Test %d: argument parsing failed, got %v", i+1, argsErr)
+		}
 		if prefix != testCase.prefix {
 			t.Errorf("Test %d: Expected %s, got %s", i+1, testCase.prefix, prefix)
 		}
@@ -198,7 +201,10 @@ func TestGetObjectsResources(t *testing.T) {
 	}
 
 	for i, testCase := range testCases {
-		uploadID, partNumberMarker, maxParts, encodingType := getObjectResources(testCase.values)
+		uploadID, partNumberMarker, maxParts, encodingType, argsErr := getObjectResources(testCase.values)
+		if argsErr != ErrNone {
+			t.Errorf("Test %d: argument parsing failed, got %v", i+1, argsErr)
+		}
 		if uploadID != testCase.uploadID {
 			t.Errorf("Test %d: Expected %s, got %s", i+1, testCase.uploadID, uploadID)
 		}

cmd/api-response-multipart.go

@@ -16,7 +16,10 @@
 
 package cmd
 
-import "net/http"
+import (
+	"context"
+	"net/http"
+)
 
 // Represents additional fields necessary for ErrPartTooSmall S3 error.
 type completeMultipartAPIError struct {
@@ -40,11 +43,12 @@ type completeMultipartAPIError struct {
 // XML doesn't carry the additional fields required to send this
 // error. So we construct a new type which lies well within the scope
 // of this function.
-func writePartSmallErrorResponse(w http.ResponseWriter, r *http.Request, err PartTooSmall) {
-
-	apiError := getAPIError(toAPIErrorCode(err))
+func writePartSmallErrorResponse(ctx context.Context, w http.ResponseWriter, r *http.Request, err PartTooSmall) {
+	apiError := toAPIError(ctx, err)
 	// Generate complete multipart error response.
-	errorResponse := getAPIErrorResponse(apiError, r.URL.Path, w.Header().Get(responseRequestIDKey))
+	errorResponse := getAPIErrorResponse(ctx, apiError, r.URL.Path,
+		w.Header().Get(responseRequestIDKey),
+		w.Header().Get(responseDeploymentIDKey))
 	cmpErrResp := completeMultipartAPIError{err.PartSize, int64(5242880), err.PartNumber, err.PartETag, errorResponse}
 	encodedErrorResponse := encodeResponse(cmpErrResp)
 

cmd/api-response.go

@@ -17,6 +17,7 @@
 package cmd
 
 import (
+	"context"
 	"encoding/xml"
 	"net/http"
 	"net/url"
@@ -24,6 +25,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/handlers"
 )
 
@@ -568,49 +570,57 @@ func writeSuccessResponseHeadersOnly(w http.ResponseWriter) {
 }
 
 // writeErrorRespone writes error headers
-func writeErrorResponse(w http.ResponseWriter, errorCode APIErrorCode, reqURL *url.URL) {
-	switch errorCode {
-	case ErrSlowDown, ErrServerNotInitialized, ErrReadQuorum, ErrWriteQuorum:
+func writeErrorResponse(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL, browser bool) {
+	switch err.Code {
+	case "SlowDown", "XMinioServerNotInitialized", "XMinioReadQuorum", "XMinioWriteQuorum":
 		// Set retry-after header to indicate user-agents to retry request after 120secs.
 		// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
 		w.Header().Set("Retry-After", "120")
+	case "AccessDenied":
+		// The request is from browser and also if browser
+		// is enabled we need to redirect.
+		if browser && globalIsBrowserEnabled {
+			w.Header().Set("Location", minioReservedBucketPath+reqURL.Path)
+			w.WriteHeader(http.StatusTemporaryRedirect)
+			return
+		}
 	}
-	apiError := getAPIError(errorCode)
+
 	// Generate error response.
-	errorResponse := getAPIErrorResponse(apiError, reqURL.Path, w.Header().Get(responseRequestIDKey))
+	errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path, w.Header().Get(responseRequestIDKey), w.Header().Get(responseDeploymentIDKey))
 	encodedErrorResponse := encodeResponse(errorResponse)
-	writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeXML)
+	writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeXML)
 }
 
-func writeErrorResponseHeadersOnly(w http.ResponseWriter, errorCode APIErrorCode) {
-	apiError := getAPIError(errorCode)
-	writeResponse(w, apiError.HTTPStatusCode, nil, mimeNone)
+func writeErrorResponseHeadersOnly(w http.ResponseWriter, err APIError) {
+	writeResponse(w, err.HTTPStatusCode, nil, mimeNone)
 }
 
 // writeErrorResponseJSON - writes error response in JSON format;
 // useful for admin APIs.
-func writeErrorResponseJSON(w http.ResponseWriter, errorCode APIErrorCode, reqURL *url.URL) {
-	apiError := getAPIError(errorCode)
+func writeErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
 	// Generate error response.
-	errorResponse := getAPIErrorResponse(apiError, reqURL.Path, w.Header().Get(responseRequestIDKey))
+	errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path, w.Header().Get(responseRequestIDKey), w.Header().Get(responseDeploymentIDKey))
 	encodedErrorResponse := encodeResponseJSON(errorResponse)
-	writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeJSON)
+	writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeJSON)
 }
 
 // writeCustomErrorResponseJSON - similar to writeErrorResponseJSON,
 // but accepts the error message directly (this allows messages to be
 // dynamically generated.)
-func writeCustomErrorResponseJSON(w http.ResponseWriter, errorCode APIErrorCode,
+func writeCustomErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIError,
 	errBody string, reqURL *url.URL) {
 
-	apiError := getAPIError(errorCode)
+	reqInfo := logger.GetReqInfo(ctx)
 	errorResponse := APIErrorResponse{
-		Code:      apiError.Code,
-		Message:   errBody,
-		Resource:  reqURL.Path,
-		RequestID: "3L137",
-		HostID:    "3L137",
+		Code:       err.Code,
+		Message:    errBody,
+		Resource:   reqURL.Path,
+		BucketName: reqInfo.BucketName,
+		Key:        reqInfo.ObjectName,
+		RequestID:  w.Header().Get(responseRequestIDKey),
+		HostID:     w.Header().Get(responseDeploymentIDKey),
 	}
 	encodedErrorResponse := encodeResponseJSON(errorResponse)
-	writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeJSON)
+	writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeJSON)
 }

cmd/api-router.go

@@ -20,29 +20,25 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"github.com/minio/minio/cmd/logger"
 )
 
 // objectAPIHandler implements and provides http handlers for S3 API.
 type objectAPIHandlers struct {
 	ObjectAPI func() ObjectLayer
 	CacheAPI  func() CacheObjectLayer
+	// Returns true of handlers should interpret encryption.
+	EncryptionEnabled func() bool
 }
 
 // registerAPIRouter - registers S3 compatible APIs.
-func registerAPIRouter(router *mux.Router) {
-	var err error
-	var cacheConfig = globalServerConfig.GetCacheConfig()
-	if len(cacheConfig.Drives) > 0 {
-		// initialize the new disk cache objects.
-		globalCacheObjectAPI, err = newServerCacheObjects(cacheConfig)
-		logger.FatalIf(err, "Unable to initialize disk caching")
-	}
-
+func registerAPIRouter(router *mux.Router, encryptionEnabled bool) {
 	// Initialize API.
 	api := objectAPIHandlers{
 		ObjectAPI: newObjectLayerFn,
 		CacheAPI:  newCacheObjectsFn,
+		EncryptionEnabled: func() bool {
+			return encryptionEnabled
+		},
 	}
 
 	// API Router
@@ -71,6 +67,10 @@ func registerAPIRouter(router *mux.Router) {
 		bucket.Methods("DELETE").Path("/{object:.+}").HandlerFunc(httpTraceAll(api.AbortMultipartUploadHandler)).Queries("uploadId", "{uploadId:.*}")
 		// GetObjectACL - this is a dummy call.
 		bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(httpTraceHdrs(api.GetObjectACLHandler)).Queries("acl", "")
+		// GetObjectTagging - this is a dummy call.
+		bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(httpTraceHdrs(api.GetObjectTaggingHandler)).Queries("tagging", "")
+		// SelectObjectContent
+		bucket.Methods("POST").Path("/{object:.+}").HandlerFunc(httpTraceHdrs(api.SelectObjectContentHandler)).Queries("select", "").Queries("select-type", "2")
 		// GetObject
 		bucket.Methods("GET").Path("/{object:.+}").HandlerFunc(httpTraceHdrs(api.GetObjectHandler))
 		// CopyObject
@@ -86,8 +86,31 @@ func registerAPIRouter(router *mux.Router) {
 		// GetBucketPolicy
 		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketPolicyHandler)).Queries("policy", "")
 
+		// Dummy Bucket Calls
 		// GetBucketACL -- this is a dummy call.
 		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketACLHandler)).Queries("acl", "")
+		// GetBucketCors - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketCorsHandler)).Queries("cors", "")
+		// GetBucketWebsiteHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketWebsiteHandler)).Queries("website", "")
+		// GetBucketVersioningHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketVersioningHandler)).Queries("versioning", "")
+		// GetBucketAccelerateHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketAccelerateHandler)).Queries("accelerate", "")
+		// GetBucketRequestPaymentHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketRequestPaymentHandler)).Queries("requestPayment", "")
+		// GetBucketLoggingHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketLoggingHandler)).Queries("logging", "")
+		// GetBucketLifecycleHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketLifecycleHandler)).Queries("lifecycle", "")
+		// GetBucketReplicationHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketReplicationHandler)).Queries("replication", "")
+		// GetBucketTaggingHandler - this is a dummy call.
+		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketTaggingHandler)).Queries("tagging", "")
+		//DeleteBucketWebsiteHandler
+		bucket.Methods("DELETE").HandlerFunc(httpTraceAll(api.DeleteBucketWebsiteHandler)).Queries("website", "")
+		// DeleteBucketTaggingHandler
+		bucket.Methods("DELETE").HandlerFunc(httpTraceAll(api.DeleteBucketTaggingHandler)).Queries("tagging", "")
 
 		// GetBucketNotification
 		bucket.Methods("GET").HandlerFunc(httpTraceAll(api.GetBucketNotificationHandler)).Queries("notification", "")

cmd/auth-handler.go

@@ -19,6 +19,7 @@ package cmd
 import (
 	"bytes"
 	"context"
+	"crypto/subtle"
 	"encoding/base64"
 	"encoding/hex"
 	"errors"
@@ -27,8 +28,11 @@ import (
 	"net/http"
 	"strings"
 
+	jwtgo "github.com/dgrijalva/jwt-go"
 	"github.com/minio/minio/cmd/logger"
+	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/hash"
+	"github.com/minio/minio/pkg/iam/policy"
 	"github.com/minio/minio/pkg/policy"
 )
 
@@ -86,6 +90,7 @@ const (
 	authTypeSigned
 	authTypeSignedV2
 	authTypeJWT
+	authTypeSTS
 )
 
 // Get request authentication type.
@@ -104,6 +109,8 @@ func getRequestAuthType(r *http.Request) authType {
 		return authTypeJWT
 	} else if isRequestPostPolicySignatureV4(r) {
 		return authTypePostPolicy
+	} else if _, ok := r.URL.Query()["Action"]; ok {
+		return authTypeSTS
 	} else if _, ok := r.Header["Authorization"]; !ok {
 		return authTypeAnonymous
 	}
@@ -112,43 +119,140 @@ func getRequestAuthType(r *http.Request) authType {
 
 // checkAdminRequestAuthType checks whether the request is a valid signature V2 or V4 request.
 // It does not accept presigned or JWT or anonymous requests.
-func checkAdminRequestAuthType(r *http.Request, region string) APIErrorCode {
+func checkAdminRequestAuthType(ctx context.Context, r *http.Request, region string) APIErrorCode {
 	s3Err := ErrAccessDenied
-	if _, ok := r.Header["X-Amz-Content-Sha256"]; ok && getRequestAuthType(r) == authTypeSigned && !skipContentSha256Cksum(r) { // we only support V4 (no presign) with auth. body
-		s3Err = isReqAuthenticated(r, region)
+	if _, ok := r.Header["X-Amz-Content-Sha256"]; ok &&
+		getRequestAuthType(r) == authTypeSigned && !skipContentSha256Cksum(r) {
+		// We only support admin credentials to access admin APIs.
+
+		var owner bool
+		_, owner, s3Err = getReqAccessKeyV4(r, region)
+		if s3Err != ErrNone {
+			return s3Err
+		}
+
+		if !owner {
+			return ErrAccessDenied
+		}
+
+		// we only support V4 (no presign) with auth body
+		s3Err = isReqAuthenticated(ctx, r, region)
 	}
 	if s3Err != ErrNone {
 		reqInfo := (&logger.ReqInfo{}).AppendTags("requestHeaders", dumpRequest(r))
-		ctx := logger.SetReqInfo(context.Background(), reqInfo)
+		ctx := logger.SetReqInfo(ctx, reqInfo)
 		logger.LogIf(ctx, errors.New(getAPIError(s3Err).Description))
 	}
 	return s3Err
 }
 
-func checkRequestAuthType(ctx context.Context, r *http.Request, action policy.Action, bucketName, objectName string) APIErrorCode {
-	isOwner := true
-	accountName := globalServerConfig.GetCredential().AccessKey
+// Fetch the security token set by the client.
+func getSessionToken(r *http.Request) (token string) {
+	token = r.Header.Get("X-Amz-Security-Token")
+	if token != "" {
+		return token
+	}
+	return r.URL.Query().Get("X-Amz-Security-Token")
+}
 
+// Fetch claims in the security token returned by the client, doesn't return
+// errors - upon errors the returned claims map will be empty.
+func mustGetClaimsFromToken(r *http.Request) map[string]interface{} {
+	claims, _ := getClaimsFromToken(r)
+	return claims
+}
+
+// Fetch claims in the security token returned by the client.
+func getClaimsFromToken(r *http.Request) (map[string]interface{}, error) {
+	claims := make(map[string]interface{})
+	token := getSessionToken(r)
+	if token == "" {
+		return claims, nil
+	}
+	stsTokenCallback := func(jwtToken *jwtgo.Token) (interface{}, error) {
+		// JWT token for x-amz-security-token is signed with admin
+		// secret key, temporary credentials become invalid if
+		// server admin credentials change. This is done to ensure
+		// that clients cannot decode the token using the temp
+		// secret keys and generate an entirely new claim by essentially
+		// hijacking the policies. We need to make sure that this is
+		// based an admin credential such that token cannot be decoded
+		// on the client side and is treated like an opaque value.
+		return []byte(globalServerConfig.GetCredential().SecretKey), nil
+	}
+	p := &jwtgo.Parser{
+		ValidMethods: []string{
+			jwtgo.SigningMethodHS256.Alg(),
+			jwtgo.SigningMethodHS512.Alg(),
+		},
+	}
+	jtoken, err := p.ParseWithClaims(token, jwtgo.MapClaims(claims), stsTokenCallback)
+	if err != nil {
+		return nil, err
+	}
+	if !jtoken.Valid {
+		return nil, errAuthentication
+	}
+	v, ok := claims["accessKey"]
+	if !ok {
+		return nil, errInvalidAccessKeyID
+	}
+	if _, ok = v.(string); !ok {
+		return nil, errInvalidAccessKeyID
+	}
+	return claims, nil
+}
+
+// Fetch claims in the security token returned by the client and validate the token.
+func checkClaimsFromToken(r *http.Request, cred auth.Credentials) (map[string]interface{}, APIErrorCode) {
+	token := getSessionToken(r)
+	if token != "" && cred.AccessKey == "" {
+		return nil, ErrNoAccessKey
+	}
+	if subtle.ConstantTimeCompare([]byte(token), []byte(cred.SessionToken)) != 1 {
+		return nil, ErrInvalidToken
+	}
+	claims, err := getClaimsFromToken(r)
+	if err != nil {
+		return nil, toAPIErrorCode(context.Background(), err)
+	}
+	return claims, ErrNone
+}
+
+// Check request auth type verifies the incoming http request
+// - validates the request signature
+// - validates the policy action if anonymous tests bucket policies if any,
+//   for authenticated requests validates IAM policies.
+// returns APIErrorCode if any to be replied to the client.
+func checkRequestAuthType(ctx context.Context, r *http.Request, action policy.Action, bucketName, objectName string) (s3Err APIErrorCode) {
+	var cred auth.Credentials
+	var owner bool
 	switch getRequestAuthType(r) {
-	case authTypeUnknown:
+	case authTypeUnknown, authTypeStreamingSigned:
 		return ErrAccessDenied
 	case authTypePresignedV2, authTypeSignedV2:
-		if errorCode := isReqAuthenticatedV2(r); errorCode != ErrNone {
-			return errorCode
+		if s3Err = isReqAuthenticatedV2(r); s3Err != ErrNone {
+			return s3Err
 		}
+		cred, owner, s3Err = getReqAccessKeyV2(r)
 	case authTypeSigned, authTypePresigned:
 		region := globalServerConfig.GetRegion()
 		switch action {
 		case policy.GetBucketLocationAction, policy.ListAllMyBucketsAction:
 			region = ""
 		}
-
-		if errorCode := isReqAuthenticated(r, region); errorCode != ErrNone {
-			return errorCode
+		if s3Err = isReqAuthenticated(ctx, r, region); s3Err != ErrNone {
+			return s3Err
 		}
-	default:
-		isOwner = false
-		accountName = ""
+		cred, owner, s3Err = getReqAccessKeyV4(r, region)
+	}
+	if s3Err != ErrNone {
+		return s3Err
+	}
+
+	claims, s3Err := checkClaimsFromToken(r, cred)
+	if s3Err != ErrNone {
+		return s3Err
 	}
 
 	// LocationConstraint is valid only for CreateBucketAction.
@@ -174,17 +278,31 @@ func checkRequestAuthType(ctx context.Context, r *http.Request, action policy.Ac
 		r.Body = ioutil.NopCloser(bytes.NewReader(payload))
 	}
 
-	if globalPolicySys.IsAllowed(policy.Args{
-		AccountName:     accountName,
-		Action:          action,
+	if cred.AccessKey == "" {
+		if globalPolicySys.IsAllowed(policy.Args{
+			AccountName:     cred.AccessKey,
+			Action:          action,
+			BucketName:      bucketName,
+			ConditionValues: getConditionValues(r, locationConstraint, ""),
+			IsOwner:         false,
+			ObjectName:      objectName,
+		}) {
+			return ErrNone
+		}
+		return ErrAccessDenied
+	}
+
+	if globalIAMSys.IsAllowed(iampolicy.Args{
+		AccountName:     cred.AccessKey,
+		Action:          iampolicy.Action(action),
 		BucketName:      bucketName,
-		ConditionValues: getConditionValues(r, locationConstraint),
-		IsOwner:         isOwner,
+		ConditionValues: getConditionValues(r, "", cred.AccessKey),
 		ObjectName:      objectName,
+		IsOwner:         owner,
+		Claims:          claims,
 	}) {
 		return ErrNone
 	}
-
 	return ErrAccessDenied
 }
 
@@ -209,7 +327,7 @@ func reqSignatureV4Verify(r *http.Request, region string) (s3Error APIErrorCode)
 }
 
 // Verify if request has valid AWS Signature Version '4'.
-func isReqAuthenticated(r *http.Request, region string) (s3Error APIErrorCode) {
+func isReqAuthenticated(ctx context.Context, r *http.Request, region string) (s3Error APIErrorCode) {
 	if errCode := reqSignatureV4Verify(r, region); errCode != ErrNone {
 		return errCode
 	}
@@ -244,9 +362,9 @@ func isReqAuthenticated(r *http.Request, region string) (s3Error APIErrorCode) {
 
 	// Verify 'Content-Md5' and/or 'X-Amz-Content-Sha256' if present.
 	// The verification happens implicit during reading.
-	reader, err := hash.NewReader(r.Body, -1, hex.EncodeToString(contentMD5), hex.EncodeToString(contentSHA256))
+	reader, err := hash.NewReader(r.Body, -1, hex.EncodeToString(contentMD5), hex.EncodeToString(contentSHA256), -1)
 	if err != nil {
-		return toAPIErrorCode(err)
+		return toAPIErrorCode(ctx, err)
 	}
 	r.Body = ioutil.NopCloser(reader)
 	return ErrNone
@@ -288,12 +406,67 @@ func (a authHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	} else if aType == authTypeJWT {
 		// Validate Authorization header if its valid for JWT request.
-		if !isHTTPRequestValid(r) {
+		if _, _, authErr := webRequestAuthenticate(r); authErr != nil {
 			w.WriteHeader(http.StatusUnauthorized)
 			return
 		}
 		a.handler.ServeHTTP(w, r)
 		return
+	} else if aType == authTypeSTS {
+		a.handler.ServeHTTP(w, r)
+		return
 	}
-	writeErrorResponse(w, ErrSignatureVersionNotSupported, r.URL)
+	writeErrorResponse(context.Background(), w, errorCodes.ToAPIErr(ErrSignatureVersionNotSupported), r.URL, guessIsBrowserReq(r))
+}
+
+// isPutAllowed - check if PUT operation is allowed on the resource, this
+// call verifies bucket policies and IAM policies, supports multi user
+// checks etc.
+func isPutAllowed(atype authType, bucketName, objectName string, r *http.Request) (s3Err APIErrorCode) {
+	var cred auth.Credentials
+	var owner bool
+	switch atype {
+	case authTypeUnknown:
+		return ErrAccessDenied
+	case authTypeSignedV2, authTypePresignedV2:
+		cred, owner, s3Err = getReqAccessKeyV2(r)
+	case authTypeStreamingSigned, authTypePresigned, authTypeSigned:
+		region := globalServerConfig.GetRegion()
+		cred, owner, s3Err = getReqAccessKeyV4(r, region)
+	}
+	if s3Err != ErrNone {
+		return s3Err
+	}
+
+	claims, s3Err := checkClaimsFromToken(r, cred)
+	if s3Err != ErrNone {
+		return s3Err
+	}
+
+	if cred.AccessKey == "" {
+		if globalPolicySys.IsAllowed(policy.Args{
+			AccountName:     cred.AccessKey,
+			Action:          policy.PutObjectAction,
+			BucketName:      bucketName,
+			ConditionValues: getConditionValues(r, "", ""),
+			IsOwner:         false,
+			ObjectName:      objectName,
+		}) {
+			return ErrNone
+		}
+		return ErrAccessDenied
+	}
+
+	if globalIAMSys.IsAllowed(iampolicy.Args{
+		AccountName:     cred.AccessKey,
+		Action:          policy.PutObjectAction,
+		BucketName:      bucketName,
+		ConditionValues: getConditionValues(r, "", cred.AccessKey),
+		ObjectName:      objectName,
+		IsOwner:         owner,
+		Claims:          claims,
+	}) {
+		return ErrNone
+	}
+	return ErrAccessDenied
 }

cmd/auth-handler_test.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"bytes"
+	"context"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -344,11 +345,14 @@ func mustNewSignedBadMD5Request(method string, urlStr string, contentLength int6
 
 // Tests is requested authenticated function, tests replies for s3 errors.
 func TestIsReqAuthenticated(t *testing.T) {
-	path, err := newTestConfig(globalMinioDefaultRegion)
+	objLayer, fsDir, err := prepareFS()
 	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(fsDir)
+	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}
-	defer os.RemoveAll(path)
 
 	creds, err := auth.CreateCredentials("myuser", "mypassword")
 	if err != nil {
@@ -374,21 +378,26 @@ func TestIsReqAuthenticated(t *testing.T) {
 		{mustNewSignedRequest("GET", "http://127.0.0.1:9000", 0, nil, t), ErrNone},
 	}
 
+	ctx := context.Background()
 	// Validates all testcases.
 	for i, testCase := range testCases {
-		if s3Error := isReqAuthenticated(testCase.req, globalServerConfig.GetRegion()); s3Error != testCase.s3Error {
-			if _, err := ioutil.ReadAll(testCase.req.Body); toAPIErrorCode(err) != testCase.s3Error {
-				t.Fatalf("Test %d: Unexpected S3 error: want %d - got %d (got after reading request %d)", i, testCase.s3Error, s3Error, toAPIErrorCode(err))
+		if s3Error := isReqAuthenticated(ctx, testCase.req, globalServerConfig.GetRegion()); s3Error != testCase.s3Error {
+			if _, err := ioutil.ReadAll(testCase.req.Body); toAPIErrorCode(ctx, err) != testCase.s3Error {
+				t.Fatalf("Test %d: Unexpected S3 error: want %d - got %d (got after reading request %s)", i, testCase.s3Error, s3Error, toAPIError(ctx, err).Code)
 			}
 		}
 	}
 }
 func TestCheckAdminRequestAuthType(t *testing.T) {
-	path, err := newTestConfig(globalMinioDefaultRegion)
+	objLayer, fsDir, err := prepareFS()
 	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(fsDir)
+
+	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}
-	defer os.RemoveAll(path)
 
 	creds, err := auth.CreateCredentials("myuser", "mypassword")
 	if err != nil {
@@ -406,8 +415,9 @@ func TestCheckAdminRequestAuthType(t *testing.T) {
 		{Request: mustNewPresignedV2Request("GET", "http://127.0.0.1:9000", 0, nil, t), ErrCode: ErrAccessDenied},
 		{Request: mustNewPresignedRequest("GET", "http://127.0.0.1:9000", 0, nil, t), ErrCode: ErrAccessDenied},
 	}
+	ctx := context.Background()
 	for i, testCase := range testCases {
-		if s3Error := checkAdminRequestAuthType(testCase.Request, globalServerConfig.GetRegion()); s3Error != testCase.ErrCode {
+		if s3Error := checkAdminRequestAuthType(ctx, testCase.Request, globalServerConfig.GetRegion()); s3Error != testCase.ErrCode {
 			t.Errorf("Test %d: Unexpected s3error returned wanted %d, got %d", i, testCase.ErrCode, s3Error)
 		}
 	}

cmd/benchmark-utils_test.go

@@ -22,7 +22,6 @@ import (
 	"io/ioutil"
 	"math"
 	"math/rand"
-	"os"
 	"strconv"
 	"testing"
 
@@ -50,7 +49,6 @@ func runPutObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
 	textData := generateBytesData(objSize)
 	// generate md5sum for the generated data.
 	// md5sum of the data to written is required as input for PutObject.
-	metadata := make(map[string]string)
 
 	md5hex := getMD5Hash(textData)
 	sha256hex := ""
@@ -62,7 +60,7 @@ func runPutObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
 	for i := 0; i < b.N; i++ {
 		// insert the object.
 		objInfo, err := obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
-			mustGetHashReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), metadata)
+			mustGetPutObjReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})
 		if err != nil {
 			b.Fatal(err)
 		}
@@ -97,13 +95,11 @@ func runPutObjectPartBenchmark(b *testing.B, obj ObjectLayer, partSize int) {
 	textData := generateBytesData(objSize)
 	// generate md5sum for the generated data.
 	// md5sum of the data to written is required as input for NewMultipartUpload.
-	metadata := make(map[string]string)
-	uploadID, err = obj.NewMultipartUpload(context.Background(), bucket, object, metadata)
+	uploadID, err = obj.NewMultipartUpload(context.Background(), bucket, object, ObjectOptions{})
 	if err != nil {
 		b.Fatal(err)
 	}
 
-	md5hex := getMD5Hash(textData)
 	sha256hex := ""
 
 	var textPartData []byte
@@ -120,10 +116,10 @@ func runPutObjectPartBenchmark(b *testing.B, obj ObjectLayer, partSize int) {
 			} else {
 				textPartData = textData[j*partSize:]
 			}
-			md5hex = getMD5Hash([]byte(textPartData))
+			md5hex := getMD5Hash([]byte(textPartData))
 			var partInfo PartInfo
 			partInfo, err = obj.PutObjectPart(context.Background(), bucket, object, uploadID, j,
-				mustGetHashReader(b, bytes.NewBuffer(textPartData), int64(len(textPartData)), md5hex, sha256hex))
+				mustGetPutObjReader(b, bytes.NewBuffer(textPartData), int64(len(textPartData)), md5hex, sha256hex), ObjectOptions{})
 			if err != nil {
 				b.Fatal(err)
 			}
@@ -138,12 +134,6 @@ func runPutObjectPartBenchmark(b *testing.B, obj ObjectLayer, partSize int) {
 
 // creates XL/FS backend setup, obtains the object layer and calls the runPutObjectPartBenchmark function.
 func benchmarkPutObjectPart(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// create a temp XL/FS backend.
 	objLayer, disks, err := prepareBenchmarkBackend(instanceType)
 	if err != nil {
@@ -151,18 +141,13 @@ func benchmarkPutObjectPart(b *testing.B, instanceType string, objSize int) {
 	}
 	// cleaning up the backend by removing all the directories and files created on function return.
 	defer removeRoots(disks)
+
 	// uses *testing.B and the object Layer to run the benchmark.
 	runPutObjectPartBenchmark(b, objLayer, objSize)
 }
 
 // creates XL/FS backend setup, obtains the object layer and calls the runPutObjectBenchmark function.
 func benchmarkPutObject(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// create a temp XL/FS backend.
 	objLayer, disks, err := prepareBenchmarkBackend(instanceType)
 	if err != nil {
@@ -170,18 +155,13 @@ func benchmarkPutObject(b *testing.B, instanceType string, objSize int) {
 	}
 	// cleaning up the backend by removing all the directories and files created on function return.
 	defer removeRoots(disks)
+
 	// uses *testing.B and the object Layer to run the benchmark.
 	runPutObjectBenchmark(b, objLayer, objSize)
 }
 
 // creates XL/FS backend setup, obtains the object layer and runs parallel benchmark for put object.
 func benchmarkPutObjectParallel(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// create a temp XL/FS backend.
 	objLayer, disks, err := prepareBenchmarkBackend(instanceType)
 	if err != nil {
@@ -189,6 +169,7 @@ func benchmarkPutObjectParallel(b *testing.B, instanceType string, objSize int)
 	}
 	// cleaning up the backend by removing all the directories and files created on function return.
 	defer removeRoots(disks)
+
 	// uses *testing.B and the object Layer to run the benchmark.
 	runPutObjectBenchmarkParallel(b, objLayer, objSize)
 }
@@ -196,16 +177,10 @@ func benchmarkPutObjectParallel(b *testing.B, instanceType string, objSize int)
 // Benchmark utility functions for ObjectLayer.GetObject().
 // Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
 func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// obtains random bucket name.
 	bucket := getRandomBucketName()
 	// create bucket.
-	err = obj.MakeBucketWithLocation(context.Background(), bucket, "")
+	err := obj.MakeBucketWithLocation(context.Background(), bucket, "")
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -215,7 +190,6 @@ func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
 	// generate etag for the generated data.
 	// etag of the data to written is required as input for PutObject.
 	// PutObject is the functions which writes the data onto the FS/XL backend.
-	metadata := make(map[string]string)
 
 	// get text data generated for number of bytes equal to object size.
 	md5hex := getMD5Hash(textData)
@@ -225,7 +199,7 @@ func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
 		// insert the object.
 		var objInfo ObjectInfo
 		objInfo, err = obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
-			mustGetHashReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), metadata)
+			mustGetPutObjReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})
 		if err != nil {
 			b.Fatal(err)
 		}
@@ -240,7 +214,7 @@ func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		var buffer = new(bytes.Buffer)
-		err = obj.GetObject(context.Background(), bucket, "object"+strconv.Itoa(i%10), 0, int64(objSize), buffer, "")
+		err = obj.GetObject(context.Background(), bucket, "object"+strconv.Itoa(i%10), 0, int64(objSize), buffer, "", ObjectOptions{})
 		if err != nil {
 			b.Error(err)
 		}
@@ -255,10 +229,8 @@ func getRandomByte() []byte {
 	const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 	// seeding the random number generator.
 	rand.Seed(UTCNow().UnixNano())
-	var b byte
 	// pick a character randomly.
-	b = letterBytes[rand.Intn(len(letterBytes))]
-	return []byte{b}
+	return []byte{letterBytes[rand.Intn(len(letterBytes))]}
 }
 
 // picks a random byte and repeats it to size bytes.
@@ -269,12 +241,6 @@ func generateBytesData(size int) []byte {
 
 // creates XL/FS backend setup, obtains the object layer and calls the runGetObjectBenchmark function.
 func benchmarkGetObject(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// create a temp XL/FS backend.
 	objLayer, disks, err := prepareBenchmarkBackend(instanceType)
 	if err != nil {
@@ -282,18 +248,13 @@ func benchmarkGetObject(b *testing.B, instanceType string, objSize int) {
 	}
 	// cleaning up the backend by removing all the directories and files created.
 	defer removeRoots(disks)
+
 	//  uses *testing.B and the object Layer to run the benchmark.
 	runGetObjectBenchmark(b, objLayer, objSize)
 }
 
 // creates XL/FS backend setup, obtains the object layer and runs parallel benchmark for ObjectLayer.GetObject() .
 func benchmarkGetObjectParallel(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// create a temp XL/FS backend.
 	objLayer, disks, err := prepareBenchmarkBackend(instanceType)
 	if err != nil {
@@ -301,6 +262,7 @@ func benchmarkGetObjectParallel(b *testing.B, instanceType string, objSize int)
 	}
 	// cleaning up the backend by removing all the directories and files created.
 	defer removeRoots(disks)
+
 	//  uses *testing.B and the object Layer to run the benchmark.
 	runGetObjectBenchmarkParallel(b, objLayer, objSize)
 }
@@ -308,16 +270,10 @@ func benchmarkGetObjectParallel(b *testing.B, instanceType string, objSize int)
 // Parallel benchmark utility functions for ObjectLayer.PutObject().
 // Creates Object layer setup ( MakeBucket ) and then runs the PutObject benchmark.
 func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// obtains random bucket name.
 	bucket := getRandomBucketName()
 	// create bucket.
-	err = obj.MakeBucketWithLocation(context.Background(), bucket, "")
+	err := obj.MakeBucketWithLocation(context.Background(), bucket, "")
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -326,7 +282,6 @@ func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 	textData := generateBytesData(objSize)
 	// generate md5sum for the generated data.
 	// md5sum of the data to written is required as input for PutObject.
-	metadata := make(map[string]string)
 
 	md5hex := getMD5Hash([]byte(textData))
 	sha256hex := ""
@@ -341,7 +296,7 @@ func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 		for pb.Next() {
 			// insert the object.
 			objInfo, err := obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
-				mustGetHashReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), metadata)
+				mustGetPutObjReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})
 			if err != nil {
 				b.Fatal(err)
 			}
@@ -359,16 +314,10 @@ func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 // Parallel benchmark utility functions for ObjectLayer.GetObject().
 // Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
 func runGetObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		b.Fatalf("Unable to initialize config. %s", err)
-	}
-	defer os.RemoveAll(rootPath)
-
 	// obtains random bucket name.
 	bucket := getRandomBucketName()
 	// create bucket.
-	err = obj.MakeBucketWithLocation(context.Background(), bucket, "")
+	err := obj.MakeBucketWithLocation(context.Background(), bucket, "")
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -378,7 +327,6 @@ func runGetObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 	// generate md5sum for the generated data.
 	// md5sum of the data to written is required as input for PutObject.
 	// PutObject is the functions which writes the data onto the FS/XL backend.
-	metadata := make(map[string]string)
 
 	md5hex := getMD5Hash([]byte(textData))
 	sha256hex := ""
@@ -387,7 +335,7 @@ func runGetObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 		// insert the object.
 		var objInfo ObjectInfo
 		objInfo, err = obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
-			mustGetHashReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), metadata)
+			mustGetPutObjReader(b, bytes.NewBuffer(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})
 		if err != nil {
 			b.Fatal(err)
 		}
@@ -403,7 +351,7 @@ func runGetObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 	b.RunParallel(func(pb *testing.PB) {
 		i := 0
 		for pb.Next() {
-			err = obj.GetObject(context.Background(), bucket, "object"+strconv.Itoa(i), 0, int64(objSize), ioutil.Discard, "")
+			err = obj.GetObject(context.Background(), bucket, "object"+strconv.Itoa(i), 0, int64(objSize), ioutil.Discard, "", ObjectOptions{})
 			if err != nil {
 				b.Error(err)
 			}

cmd/bitrot-streaming.go

@@ -0,0 +1,172 @@
+/*
+ * Minio Cloud Storage, (C) 2019 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"bytes"
+	"context"
+	"encoding/hex"
+	"hash"
+	"io"
+
+	"github.com/minio/minio/cmd/logger"
+)
+
+// Calculates bitrot in chunks and writes the hash into the stream.
+type streamingBitrotWriter struct {
+	iow       *io.PipeWriter
+	h         hash.Hash
+	shardSize int64
+	canClose  chan struct{} // Needed to avoid race explained in Close() call.
+
+	// Following two fields are used only to make sure that Write(p) is called such that
+	// len(p) is always the block size except the last block, i.e prevent programmer errors.
+	currentBlockIdx int
+	verifyTillIdx   int
+}
+
+func (b *streamingBitrotWriter) Write(p []byte) (int, error) {
+	if b.currentBlockIdx < b.verifyTillIdx && int64(len(p)) != b.shardSize {
+		// All blocks except last should be of the length b.shardSize
+		logger.LogIf(context.Background(), errUnexpected)
+		return 0, errUnexpected
+	}
+	if len(p) == 0 {
+		return 0, nil
+	}
+	b.h.Reset()
+	b.h.Write(p)
+	hashBytes := b.h.Sum(nil)
+	n, err := b.iow.Write(hashBytes)
+	if n != len(hashBytes) {
+		logger.LogIf(context.Background(), err)
+		return 0, err
+	}
+	n, err = b.iow.Write(p)
+	b.currentBlockIdx++
+	return n, err
+}
+
+func (b *streamingBitrotWriter) Close() error {
+	err := b.iow.Close()
+	// Wait for all data to be written before returning else it causes race conditions.
+	// Race condition is because of io.PipeWriter implementation. i.e consider the following
+	// sequent of operations:
+	// 1) pipe.Write()
+	// 2) pipe.Close()
+	// Now pipe.Close() can return before the data is read on the other end of the pipe and written to the disk
+	// Hence an immediate Read() on the file can return incorrect data.
+	<-b.canClose
+	return err
+}
+
+// Returns streaming bitrot writer implementation.
+func newStreamingBitrotWriter(disk StorageAPI, volume, filePath string, length int64, algo BitrotAlgorithm, shardSize int64) io.WriteCloser {
+	r, w := io.Pipe()
+	h := algo.New()
+	bw := &streamingBitrotWriter{w, h, shardSize, make(chan struct{}), 0, int(length / shardSize)}
+	go func() {
+		bitrotSumsTotalSize := ceilFrac(length, shardSize) * int64(h.Size()) // Size used for storing bitrot checksums.
+		totalFileSize := bitrotSumsTotalSize + length
+		err := disk.CreateFile(volume, filePath, totalFileSize, r)
+		if err != nil {
+			logger.LogIf(context.Background(), err)
+			r.CloseWithError(err)
+		}
+		close(bw.canClose)
+	}()
+	return bw
+}
+
+// ReadAt() implementation which verifies the bitrot hash available as part of the stream.
+type streamingBitrotReader struct {
+	disk       StorageAPI
+	rc         io.ReadCloser
+	volume     string
+	filePath   string
+	tillOffset int64
+	currOffset int64
+	h          hash.Hash
+	shardSize  int64
+	hashBytes  []byte
+}
+
+func (b *streamingBitrotReader) Close() error {
+	if b.rc == nil {
+		return nil
+	}
+	return b.rc.Close()
+}
+
+func (b *streamingBitrotReader) ReadAt(buf []byte, offset int64) (int, error) {
+	var err error
+	if offset%b.shardSize != 0 {
+		// Offset should always be aligned to b.shardSize
+		logger.LogIf(context.Background(), errUnexpected)
+		return 0, errUnexpected
+	}
+	if b.rc == nil {
+		// For the first ReadAt() call we need to open the stream for reading.
+		b.currOffset = offset
+		streamOffset := (offset/b.shardSize)*int64(b.h.Size()) + offset
+		b.rc, err = b.disk.ReadFileStream(b.volume, b.filePath, streamOffset, b.tillOffset-streamOffset)
+		if err != nil {
+			logger.LogIf(context.Background(), err)
+			return 0, err
+		}
+	}
+	if offset != b.currOffset {
+		logger.LogIf(context.Background(), errUnexpected)
+		return 0, errUnexpected
+	}
+	b.h.Reset()
+	_, err = io.ReadFull(b.rc, b.hashBytes)
+	if err != nil {
+		logger.LogIf(context.Background(), err)
+		return 0, err
+	}
+	_, err = io.ReadFull(b.rc, buf)
+	if err != nil {
+		logger.LogIf(context.Background(), err)
+		return 0, err
+	}
+	b.h.Write(buf)
+
+	if !bytes.Equal(b.h.Sum(nil), b.hashBytes) {
+		err = hashMismatchError{hex.EncodeToString(b.hashBytes), hex.EncodeToString(b.h.Sum(nil))}
+		logger.LogIf(context.Background(), err)
+		return 0, err
+	}
+	b.currOffset += int64(len(buf))
+	return len(buf), nil
+}
+
+// Returns streaming bitrot reader implementation.
+func newStreamingBitrotReader(disk StorageAPI, volume, filePath string, tillOffset int64, algo BitrotAlgorithm, shardSize int64) *streamingBitrotReader {
+	h := algo.New()
+	return &streamingBitrotReader{
+		disk,
+		nil,
+		volume,
+		filePath,
+		ceilFrac(tillOffset, shardSize)*int64(h.Size()) + tillOffset,
+		0,
+		h,
+		shardSize,
+		make([]byte, h.Size()),
+	}
+}

cmd/bitrot-whole.go

@@ -0,0 +1,109 @@
+/*
+ * Minio Cloud Storage, (C) 2019 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"context"
+	"hash"
+	"io"
+
+	"github.com/minio/minio/cmd/logger"
+)
+
+// Implementation to calculate bitrot for the whole file.
+type wholeBitrotWriter struct {
+	disk      StorageAPI
+	volume    string
+	filePath  string
+	shardSize int64 // This is the shard size of the erasure logic
+	hash.Hash       // For bitrot hash
+
+	// Following two fields are used only to make sure that Write(p) is called such that
+	// len(p) is always the block size except the last block and prevent programmer errors.
+	currentBlockIdx int
+	lastBlockIdx    int
+}
+
+func (b *wholeBitrotWriter) Write(p []byte) (int, error) {
+	if b.currentBlockIdx < b.lastBlockIdx && int64(len(p)) != b.shardSize {
+		// All blocks except last should be of the length b.shardSize
+		logger.LogIf(context.Background(), errUnexpected)
+		return 0, errUnexpected
+	}
+	err := b.disk.AppendFile(b.volume, b.filePath, p)
+	if err != nil {
+		logger.LogIf(context.Background(), err)
+		return 0, err
+	}
+	_, err = b.Hash.Write(p)
+	if err != nil {
+		logger.LogIf(context.Background(), err)
+		return 0, err
+	}
+	b.currentBlockIdx++
+	return len(p), nil
+}
+
+func (b *wholeBitrotWriter) Close() error {
+	return nil
+}
+
+// Returns whole-file bitrot writer.
+func newWholeBitrotWriter(disk StorageAPI, volume, filePath string, length int64, algo BitrotAlgorithm, shardSize int64) io.WriteCloser {
+	return &wholeBitrotWriter{disk, volume, filePath, shardSize, algo.New(), 0, int(length / shardSize)}
+}
+
+// Implementation to verify bitrot for the whole file.
+type wholeBitrotReader struct {
+	disk       StorageAPI
+	volume     string
+	filePath   string
+	verifier   *BitrotVerifier // Holds the bit-rot info
+	tillOffset int64           // Affects the length of data requested in disk.ReadFile depending on Read()'s offset
+	buf        []byte          // Holds bit-rot verified data
+}
+
+func (b *wholeBitrotReader) ReadAt(buf []byte, offset int64) (n int, err error) {
+	if b.buf == nil {
+		b.buf = make([]byte, b.tillOffset-offset)
+		if _, err := b.disk.ReadFile(b.volume, b.filePath, offset, b.buf, b.verifier); err != nil {
+			ctx := context.Background()
+			logger.GetReqInfo(ctx).AppendTags("disk", b.disk.String())
+			logger.LogIf(ctx, err)
+			return 0, err
+		}
+	}
+	if len(b.buf) < len(buf) {
+		logger.LogIf(context.Background(), errLessData)
+		return 0, errLessData
+	}
+	n = copy(buf, b.buf)
+	b.buf = b.buf[n:]
+	return n, nil
+}
+
+// Returns whole-file bitrot reader.
+func newWholeBitrotReader(disk StorageAPI, volume, filePath string, algo BitrotAlgorithm, tillOffset int64, sum []byte) *wholeBitrotReader {
+	return &wholeBitrotReader{
+		disk:       disk,
+		volume:     volume,
+		filePath:   filePath,
+		verifier:   &BitrotVerifier{algo, sum},
+		tillOffset: tillOffset,
+		buf:        nil,
+	}
+}

cmd/bitrot.go

@@ -0,0 +1,187 @@
+/*
+ * Minio Cloud Storage, (C) 2018 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"context"
+	"errors"
+	"hash"
+	"io"
+
+	"github.com/minio/highwayhash"
+	"github.com/minio/minio/cmd/logger"
+	sha256 "github.com/minio/sha256-simd"
+	"golang.org/x/crypto/blake2b"
+)
+
+// magic HH-256 key as HH-256 hash of the first 100 decimals of π as utf-8 string with a zero key.
+var magicHighwayHash256Key = []byte("\x4b\xe7\x34\xfa\x8e\x23\x8a\xcd\x26\x3e\x83\xe6\xbb\x96\x85\x52\x04\x0f\x93\x5d\xa3\x9f\x44\x14\x97\xe0\x9d\x13\x22\xde\x36\xa0")
+
+// BitrotAlgorithm specifies a algorithm used for bitrot protection.
+type BitrotAlgorithm uint
+
+const (
+	// SHA256 represents the SHA-256 hash function
+	SHA256 BitrotAlgorithm = 1 + iota
+	// HighwayHash256 represents the HighwayHash-256 hash function
+	HighwayHash256
+	// HighwayHash256S represents the Streaming HighwayHash-256 hash function
+	HighwayHash256S
+	// BLAKE2b512 represents the BLAKE2b-512 hash function
+	BLAKE2b512
+)
+
+// DefaultBitrotAlgorithm is the default algorithm used for bitrot protection.
+const (
+	DefaultBitrotAlgorithm = HighwayHash256S
+)
+
+var bitrotAlgorithms = map[BitrotAlgorithm]string{
+	SHA256:          "sha256",
+	BLAKE2b512:      "blake2b",
+	HighwayHash256:  "highwayhash256",
+	HighwayHash256S: "highwayhash256S",
+}
+
+// New returns a new hash.Hash calculating the given bitrot algorithm.
+func (a BitrotAlgorithm) New() hash.Hash {
+	switch a {
+	case SHA256:
+		return sha256.New()
+	case BLAKE2b512:
+		b2, _ := blake2b.New512(nil) // New512 never returns an error if the key is nil
+		return b2
+	case HighwayHash256:
+		hh, _ := highwayhash.New(magicHighwayHash256Key) // New will never return error since key is 256 bit
+		return hh
+	case HighwayHash256S:
+		hh, _ := highwayhash.New(magicHighwayHash256Key) // New will never return error since key is 256 bit
+		return hh
+	default:
+		logger.CriticalIf(context.Background(), errors.New("Unsupported bitrot algorithm"))
+		return nil
+	}
+}
+
+// Available reports whether the given algorithm is available.
+func (a BitrotAlgorithm) Available() bool {
+	_, ok := bitrotAlgorithms[a]
+	return ok
+}
+
+// String returns the string identifier for a given bitrot algorithm.
+// If the algorithm is not supported String panics.
+func (a BitrotAlgorithm) String() string {
+	name, ok := bitrotAlgorithms[a]
+	if !ok {
+		logger.CriticalIf(context.Background(), errors.New("Unsupported bitrot algorithm"))
+	}
+	return name
+}
+
+// NewBitrotVerifier returns a new BitrotVerifier implementing the given algorithm.
+func NewBitrotVerifier(algorithm BitrotAlgorithm, checksum []byte) *BitrotVerifier {
+	return &BitrotVerifier{algorithm, checksum}
+}
+
+// BitrotVerifier can be used to verify protected data.
+type BitrotVerifier struct {
+	algorithm BitrotAlgorithm
+	sum       []byte
+}
+
+// BitrotAlgorithmFromString returns a bitrot algorithm from the given string representation.
+// It returns 0 if the string representation does not match any supported algorithm.
+// The zero value of a bitrot algorithm is never supported.
+func BitrotAlgorithmFromString(s string) (a BitrotAlgorithm) {
+	for alg, name := range bitrotAlgorithms {
+		if name == s {
+			return alg
+		}
+	}
+	return
+}
+
+func newBitrotWriter(disk StorageAPI, volume, filePath string, length int64, algo BitrotAlgorithm, shardSize int64) io.Writer {
+	if algo == HighwayHash256S {
+		return newStreamingBitrotWriter(disk, volume, filePath, length, algo, shardSize)
+	}
+	return newWholeBitrotWriter(disk, volume, filePath, length, algo, shardSize)
+}
+
+func newBitrotReader(disk StorageAPI, bucket string, filePath string, tillOffset int64, algo BitrotAlgorithm, sum []byte, shardSize int64) io.ReaderAt {
+	if algo == HighwayHash256S {
+		return newStreamingBitrotReader(disk, bucket, filePath, tillOffset, algo, shardSize)
+	}
+	return newWholeBitrotReader(disk, bucket, filePath, algo, tillOffset, sum)
+}
+
+// Close all the readers.
+func closeBitrotReaders(rs []io.ReaderAt) {
+	for _, r := range rs {
+		if br, ok := r.(*streamingBitrotReader); ok {
+			br.Close()
+		}
+	}
+}
+
+// Close all the writers.
+func closeBitrotWriters(ws []io.Writer) {
+	for _, w := range ws {
+		if bw, ok := w.(*streamingBitrotWriter); ok {
+			bw.Close()
+		}
+	}
+}
+
+// Returns hash sum for whole-bitrot, nil for streaming-bitrot.
+func bitrotWriterSum(w io.Writer) []byte {
+	if bw, ok := w.(*wholeBitrotWriter); ok {
+		return bw.Sum(nil)
+	}
+	return nil
+}
+
+// Verify if a file has bitrot error.
+func bitrotCheckFile(disk StorageAPI, volume string, filePath string, tillOffset int64, algo BitrotAlgorithm, sum []byte, shardSize int64) (err error) {
+	if algo != HighwayHash256S {
+		buf := []byte{}
+		// For whole-file bitrot we don't need to read the entire file as the bitrot verify happens on the server side even if we read 0-bytes.
+		_, err = disk.ReadFile(volume, filePath, 0, buf, NewBitrotVerifier(algo, sum))
+		return err
+	}
+	buf := make([]byte, shardSize)
+	r := newStreamingBitrotReader(disk, volume, filePath, tillOffset, algo, shardSize)
+	defer closeBitrotReaders([]io.ReaderAt{r})
+	var offset int64
+	for {
+		if offset == tillOffset {
+			break
+		}
+		var n int
+		tmpBuf := buf
+		if int64(len(tmpBuf)) > (tillOffset - offset) {
+			tmpBuf = tmpBuf[:(tillOffset - offset)]
+		}
+		n, err = r.ReadAt(tmpBuf, offset)
+		if err != nil {
+			return err
+		}
+		offset += int64(n)
+	}
+	return nil
+}

cmd/bitrot_test.go

@@ -0,0 +1,84 @@
+/*
+ * Minio Cloud Storage, (C) 2018 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"testing"
+)
+
+func testBitrotReaderWriterAlgo(t *testing.T, bitrotAlgo BitrotAlgorithm) {
+	tmpDir, err := ioutil.TempDir("", "")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	volume := "testvol"
+	filePath := "testfile"
+
+	disk, err := newPosix(tmpDir)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	disk.MakeVol(volume)
+
+	writer := newBitrotWriter(disk, volume, filePath, 35, bitrotAlgo, 10)
+
+	_, err = writer.Write([]byte("aaaaaaaaaa"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	_, err = writer.Write([]byte("aaaaaaaaaa"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	_, err = writer.Write([]byte("aaaaaaaaaa"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	_, err = writer.Write([]byte("aaaaa"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	writer.(io.Closer).Close()
+
+	reader := newBitrotReader(disk, volume, filePath, 35, bitrotAlgo, bitrotWriterSum(writer), 10)
+	b := make([]byte, 10)
+	if _, err = reader.ReadAt(b, 0); err != nil {
+		log.Fatal(err)
+	}
+	if _, err = reader.ReadAt(b, 10); err != nil {
+		log.Fatal(err)
+	}
+	if _, err = reader.ReadAt(b, 20); err != nil {
+		log.Fatal(err)
+	}
+	if _, err = reader.ReadAt(b[:5], 30); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func TestAllBitrotAlgorithms(t *testing.T) {
+	for bitrotAlgo := range bitrotAlgorithms {
+		testBitrotReaderWriterAlgo(t, bitrotAlgo)
+	}
+}

cmd/bool-flag.go

@@ -56,11 +56,12 @@ func (bf *BoolFlag) UnmarshalJSON(data []byte) (err error) {
 
 // ParseBoolFlag - parses string into BoolFlag.
 func ParseBoolFlag(s string) (bf BoolFlag, err error) {
-	if s == "on" {
+	switch s {
+	case "on":
 		bf = true
-	} else if s == "off" {
+	case "off":
 		bf = false
-	} else {
+	default:
 		err = fmt.Errorf("invalid value ‘%s’ for BoolFlag", s)
 	}
 

cmd/bucket-handlers-listobjects.go

@@ -20,6 +20,9 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
+	"github.com/minio/minio/cmd/crypto"
+	"github.com/minio/minio/cmd/logger"
+
 	"github.com/minio/minio/pkg/policy"
 )
 
@@ -56,17 +59,19 @@ func validateListObjectsArgs(prefix, marker, delimiter string, maxKeys int) APIE
 func (api objectAPIHandlers) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "ListObjectsV2")
 
+	defer logger.AuditLog(w, r, "ListObjectsV2", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -74,18 +79,18 @@ func (api objectAPIHandlers) ListObjectsV2Handler(w http.ResponseWriter, r *http
 
 	// Extract all the listObjectsV2 query params to their native values.
 	prefix, token, startAfter, delimiter, fetchOwner, maxKeys, _, errCode := getListObjectsV2Args(urlValues)
-
 	if errCode != ErrNone {
-		writeErrorResponse(w, errCode, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Validate the query params before beginning to serve the request.
 	// fetch-owner is not validated since it is a boolean
 	if s3Error := validateListObjectsArgs(prefix, token, delimiter, maxKeys); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
+
 	listObjectsV2 := objectAPI.ListObjectsV2
 	if api.CacheAPI() != nil {
 		listObjectsV2 = api.CacheAPI().ListObjectsV2
@@ -95,15 +100,26 @@ func (api objectAPIHandlers) ListObjectsV2Handler(w http.ResponseWriter, r *http
 	// marshaled into S3 compatible XML header.
 	listObjectsV2Info, err := listObjectsV2(ctx, bucket, prefix, token, delimiter, maxKeys, fetchOwner, startAfter)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	for i := range listObjectsV2Info.Objects {
-		if listObjectsV2Info.Objects[i].IsEncrypted() {
+		var actualSize int64
+		if listObjectsV2Info.Objects[i].IsCompressed() {
+			// Read the decompressed size from the meta.json.
+			actualSize = listObjectsV2Info.Objects[i].GetActualSize()
+			if actualSize < 0 {
+				writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidDecompressedSize), r.URL, guessIsBrowserReq(r))
+				return
+			}
+			// Set the info.Size to the actualSize.
+			listObjectsV2Info.Objects[i].Size = actualSize
+		} else if crypto.IsEncrypted(listObjectsV2Info.Objects[i].UserDefined) {
+			listObjectsV2Info.Objects[i].ETag = getDecryptedETag(r.Header, listObjectsV2Info.Objects[i], false)
 			listObjectsV2Info.Objects[i].Size, err = listObjectsV2Info.Objects[i].DecryptedSize()
 			if err != nil {
-				writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 				return
 			}
 		}
@@ -125,56 +141,69 @@ func (api objectAPIHandlers) ListObjectsV2Handler(w http.ResponseWriter, r *http
 func (api objectAPIHandlers) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "ListObjectsV1")
 
+	defer logger.AuditLog(w, r, "ListObjectsV1", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Extract all the litsObjectsV1 query params to their native values.
-	prefix, marker, delimiter, maxKeys, _ := getListObjectsV1Args(r.URL.Query())
-
-	// Validate the maxKeys lowerbound. When maxKeys > 1000, S3 returns 1000 but
-	// does not throw an error.
-	if maxKeys < 0 {
-		writeErrorResponse(w, ErrInvalidMaxKeys, r.URL)
-		return
-	} // Validate all the query params before beginning to serve the request.
-	if s3Error := validateListObjectsArgs(prefix, marker, delimiter, maxKeys); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+	prefix, marker, delimiter, maxKeys, _, s3Error := getListObjectsV1Args(r.URL.Query())
+	if s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
+
+	// Validate all the query params before beginning to serve the request.
+	if s3Error := validateListObjectsArgs(prefix, marker, delimiter, maxKeys); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
 	listObjects := objectAPI.ListObjects
 	if api.CacheAPI() != nil {
 		listObjects = api.CacheAPI().ListObjects
 	}
+
 	// Inititate a list objects operation based on the input params.
 	// On success would return back ListObjectsInfo object to be
 	// marshaled into S3 compatible XML header.
 	listObjectsInfo, err := listObjects(ctx, bucket, prefix, marker, delimiter, maxKeys)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	for i := range listObjectsInfo.Objects {
-		if listObjectsInfo.Objects[i].IsEncrypted() {
+		var actualSize int64
+		if listObjectsInfo.Objects[i].IsCompressed() {
+			// Read the decompressed size from the meta.json.
+			actualSize = listObjectsInfo.Objects[i].GetActualSize()
+			if actualSize < 0 {
+				writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidDecompressedSize), r.URL, guessIsBrowserReq(r))
+				return
+			}
+			// Set the info.Size to the actualSize.
+			listObjectsInfo.Objects[i].Size = actualSize
+		} else if crypto.IsEncrypted(listObjectsInfo.Objects[i].UserDefined) {
+			listObjectsInfo.Objects[i].ETag = getDecryptedETag(r.Header, listObjectsInfo.Objects[i], false)
 			listObjectsInfo.Objects[i].Size, err = listObjectsInfo.Objects[i].DecryptedSize()
 			if err != nil {
-				writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 				return
 			}
 		}
 	}
-
 	response := generateListObjectsV1Response(bucket, prefix, marker, delimiter, maxKeys, listObjectsInfo)
 
 	// Write success response.

cmd/bucket-handlers.go

@@ -32,6 +32,7 @@ import (
 	"github.com/gorilla/mux"
 
 	"github.com/minio/minio-go/pkg/set"
+	"github.com/minio/minio/cmd/crypto"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/dns"
 	"github.com/minio/minio/pkg/event"
@@ -88,17 +89,19 @@ func initFederatorBackend(objLayer ObjectLayer) {
 func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "GetBucketLocation")
 
+	defer logger.AuditLog(w, r, "GetBucketLocation", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketLocationAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -107,7 +110,7 @@ func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *
 		getBucketInfo = api.CacheAPI().GetBucketInfo
 	}
 	if _, err := getBucketInfo(ctx, bucket); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -136,36 +139,44 @@ func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *
 func (api objectAPIHandlers) ListMultipartUploadsHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "ListMultipartUploads")
 
+	defer logger.AuditLog(w, r, "ListMultipartUploads", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketMultipartUploadsAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
-	prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, _ := getBucketMultipartResources(r.URL.Query())
-	if maxUploads < 0 {
-		writeErrorResponse(w, ErrInvalidMaxUploads, r.URL)
+	prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, _, errCode := getBucketMultipartResources(r.URL.Query())
+	if errCode != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
 		return
 	}
+
+	if maxUploads < 0 {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxUploads), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
 	if keyMarker != "" {
 		// Marker not common with prefix is not implemented.
 		if !hasPrefix(keyMarker, prefix) {
-			writeErrorResponse(w, ErrNotImplemented, r.URL)
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
 			return
 		}
 	}
 
 	listMultipartsInfo, err := objectAPI.ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 	// generate response
@@ -183,27 +194,30 @@ func (api objectAPIHandlers) ListMultipartUploadsHandler(w http.ResponseWriter,
 func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "ListBuckets")
 
+	defer logger.AuditLog(w, r, "ListBuckets", mustGetClaimsFromToken(r))
+
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
-	listBuckets := objectAPI.ListBuckets
 
+	listBuckets := objectAPI.ListBuckets
 	if api.CacheAPI() != nil {
 		listBuckets = api.CacheAPI().ListBuckets
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.ListAllMyBucketsAction, "", ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
+
 	// If etcd, dns federation configured list buckets from etcd.
 	var bucketsInfo []BucketInfo
 	if globalDNSConfig != nil {
 		dnsBuckets, err := globalDNSConfig.List()
 		if err != nil && err != dns.ErrNoEntriesFound {
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 		bucketSet := set.NewStringSet()
@@ -222,7 +236,7 @@ func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.R
 		var err error
 		bucketsInfo, err = listBuckets(ctx)
 		if err != nil {
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 	}
@@ -239,12 +253,14 @@ func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.R
 func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "DeleteMultipleObjects")
 
+	defer logger.AuditLog(w, r, "DeleteMultipleObjects", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -253,7 +269,7 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 		// In the event access is denied, a 200 response should still be returned
 		// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
 		if s3Error != ErrAccessDenied {
-			writeErrorResponse(w, s3Error, r.URL)
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 			return
 		}
 	}
@@ -261,14 +277,14 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 	// Content-Length is required and should be non-zero
 	// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
 	if r.ContentLength <= 0 {
-		writeErrorResponse(w, ErrMissingContentLength, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Content-Md5 is requied should be set
 	// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
 	if _, ok := r.Header["Content-Md5"]; !ok {
-		writeErrorResponse(w, ErrMissingContentMD5, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentMD5), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -284,7 +300,7 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 	// Read incoming body XML bytes.
 	if _, err := io.ReadFull(r.Body, deleteXMLBytes); err != nil {
 		logger.LogIf(ctx, err)
-		writeErrorResponse(w, ErrInternalError, r.URL)
+		writeErrorResponse(ctx, w, toAdminAPIErr(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -292,7 +308,7 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 	deleteObjects := &DeleteObjectsRequest{}
 	if err := xml.Unmarshal(deleteXMLBytes, deleteObjects); err != nil {
 		logger.LogIf(ctx, err)
-		writeErrorResponse(w, ErrMalformedXML, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -300,7 +316,7 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 	if globalWORMEnabled {
 		// Not required to check whether given objects exist or not, because
 		// DeleteMultipleObject is always successful irrespective of object existence.
-		writeErrorResponse(w, ErrMethodNotAllowed, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -339,10 +355,11 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 			deletedObjects = append(deletedObjects, object)
 			continue
 		}
+		apiErr := toAPIError(ctx, err)
 		// Error during delete should be collected separately.
 		deleteErrors = append(deleteErrors, DeleteError{
-			Code:    errorCodeResponse[toAPIErrorCode(err)].Code,
-			Message: errorCodeResponse[toAPIErrorCode(err)].Description,
+			Code:    apiErr.Code,
+			Message: apiErr.Description,
 			Key:     object.ObjectName,
 		})
 	}
@@ -369,10 +386,11 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 			Object: ObjectInfo{
 				Name: dobj.ObjectName,
 			},
-			ReqParams: extractReqParams(r),
-			UserAgent: r.UserAgent(),
-			Host:      host,
-			Port:      port,
+			ReqParams:    extractReqParams(r),
+			RespElements: extractRespElements(w),
+			UserAgent:    r.UserAgent(),
+			Host:         host,
+			Port:         port,
 		})
 	}
 }
@@ -383,9 +401,11 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "PutBucket")
 
+	defer logger.AuditLog(w, r, "PutBucket", mustGetClaimsFromToken(r))
+
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -393,21 +413,21 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 	bucket := vars["bucket"]
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.CreateBucketAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Parse incoming location constraint.
 	location, s3Error := parseLocationConstraint(r)
 	if s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Validate if location sent by the client is valid, reject
 	// requests which do not follow valid region requirements.
 	if !isValidLocation(location) {
-		writeErrorResponse(w, ErrInvalidRegion, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRegion), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -416,12 +436,12 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 			if err == dns.ErrNoEntriesFound {
 				// Proceed to creating a bucket.
 				if err = objectAPI.MakeBucketWithLocation(ctx, bucket, location); err != nil {
-					writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+					writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 					return
 				}
 				if err = globalDNSConfig.Put(bucket); err != nil {
 					objectAPI.DeleteBucket(ctx, bucket)
-					writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+					writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 					return
 				}
 
@@ -431,18 +451,18 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 				writeSuccessResponseHeadersOnly(w)
 				return
 			}
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 
 		}
-		writeErrorResponse(w, ErrBucketAlreadyOwnedByYou, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBucketAlreadyOwnedByYou), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Proceed to creating a bucket.
 	err := objectAPI.MakeBucketWithLocation(ctx, bucket, location)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -459,9 +479,21 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "PostPolicyBucket")
 
+	defer logger.AuditLog(w, r, "PostPolicyBucket", mustGetClaimsFromToken(r))
+
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	if crypto.S3KMS.IsRequested(r.Header) { // SSE-KMS is not supported
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -470,17 +502,17 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	// Require Content-Length to be set in the request
 	size := r.ContentLength
 	if size < 0 {
-		writeErrorResponse(w, ErrMissingContentLength, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
 		return
 	}
 	resource, err := getResource(r.URL.Path, r.Host, globalDomainName)
 	if err != nil {
-		writeErrorResponse(w, ErrInvalidRequest, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL, guessIsBrowserReq(r))
 		return
 	}
 	// Make sure that the URL  does not contain object name.
 	if bucket != filepath.Clean(resource[1:]) {
-		writeErrorResponse(w, ErrMethodNotAllowed, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -489,7 +521,7 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	reader, err := r.MultipartReader()
 	if err != nil {
 		logger.LogIf(ctx, err)
-		writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -497,7 +529,7 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	form, err := reader.ReadForm(maxFormMemory)
 	if err != nil {
 		logger.LogIf(ctx, err)
-		writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -508,13 +540,13 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	fileBody, fileName, fileSize, formValues, err := extractPostPolicyFormValues(ctx, form)
 	if err != nil {
 		logger.LogIf(ctx, err)
-		writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Check if file is provided, error out otherwise.
 	if fileBody == nil {
-		writeErrorResponse(w, ErrPOSTFileRequired, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrPOSTFileRequired), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -536,92 +568,112 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	if successRedirect != "" {
 		redirectURL, err = url.Parse(successRedirect)
 		if err != nil {
-			writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
 			return
 		}
 	}
 
 	// Verify policy signature.
-	apiErr := doesPolicySignatureMatch(formValues)
-	if apiErr != ErrNone {
-		writeErrorResponse(w, apiErr, r.URL)
+	errCode := doesPolicySignatureMatch(formValues)
+	if errCode != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	policyBytes, err := base64.StdEncoding.DecodeString(formValues.Get("Policy"))
 	if err != nil {
-		writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
-	postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
-	if err != nil {
-		writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
-		return
-	}
-
-	// Make sure formValues adhere to policy restrictions.
-	if apiErr = checkPostPolicy(formValues, postPolicyForm); apiErr != ErrNone {
-		writeErrorResponse(w, apiErr, r.URL)
-		return
-	}
-
-	// Ensure that the object size is within expected range, also the file size
-	// should not exceed the maximum single Put size (5 GiB)
-	lengthRange := postPolicyForm.Conditions.ContentLengthRange
-	if lengthRange.Valid {
-		if fileSize < lengthRange.Min {
-			writeErrorResponse(w, toAPIErrorCode(errDataTooSmall), r.URL)
+	// Handle policy if it is set.
+	if len(policyBytes) > 0 {
+		postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
+		if err != nil {
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
 			return
 		}
 
-		if fileSize > lengthRange.Max || isMaxObjectSize(fileSize) {
-			writeErrorResponse(w, toAPIErrorCode(errDataTooLarge), r.URL)
+		// Make sure formValues adhere to policy restrictions.
+		if errCode = checkPostPolicy(formValues, postPolicyForm); errCode != ErrNone {
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
 			return
 		}
+
+		// Ensure that the object size is within expected range, also the file size
+		// should not exceed the maximum single Put size (5 GiB)
+		lengthRange := postPolicyForm.Conditions.ContentLengthRange
+		if lengthRange.Valid {
+			if fileSize < lengthRange.Min {
+				writeErrorResponse(ctx, w, toAPIError(ctx, errDataTooSmall), r.URL, guessIsBrowserReq(r))
+				return
+			}
+
+			if fileSize > lengthRange.Max || isMaxObjectSize(fileSize) {
+				writeErrorResponse(ctx, w, toAPIError(ctx, errDataTooLarge), r.URL, guessIsBrowserReq(r))
+				return
+			}
+		}
 	}
 
 	// Extract metadata to be saved from received Form.
 	metadata := make(map[string]string)
 	err = extractMetadataFromMap(ctx, formValues, metadata)
 	if err != nil {
-		writeErrorResponse(w, ErrInternalError, r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
-	hashReader, err := hash.NewReader(fileBody, fileSize, "", "")
+	hashReader, err := hash.NewReader(fileBody, fileSize, "", "", fileSize)
 	if err != nil {
 		logger.LogIf(ctx, err)
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
+	rawReader := hashReader
+	pReader := NewPutObjReader(rawReader, nil, nil)
+	var objectEncryptionKey []byte
 
+	// This request header needs to be set prior to setting ObjectOptions
+	if globalAutoEncryption && !crypto.SSEC.IsRequested(r.Header) {
+		r.Header.Add(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
+	}
+	// get gateway encryption options
+	var opts ObjectOptions
+	opts, err = putOpts(ctx, r, bucket, object, metadata)
+	if err != nil {
+		writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
+		return
+	}
 	if objectAPI.IsEncryptionSupported() {
-		if hasSSECustomerHeader(formValues) && !hasSuffix(object, slashSeparator) { // handle SSE-C requests
+		if hasServerSideEncryptionHeader(formValues) && !hasSuffix(object, slashSeparator) { // handle SSE-C and SSE-S3 requests
 			var reader io.Reader
 			var key []byte
-			key, err = ParseSSECustomerHeader(formValues)
-			if err != nil {
-				writeErrorResponse(w, toAPIErrorCode(err), r.URL)
-				return
+			if crypto.SSEC.IsRequested(formValues) {
+				key, err = ParseSSECustomerHeader(formValues)
+				if err != nil {
+					writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+					return
+				}
 			}
-			reader, err = newEncryptReader(hashReader, key, bucket, object, metadata)
+			reader, objectEncryptionKey, err = newEncryptReader(hashReader, key, bucket, object, metadata, crypto.S3.IsRequested(formValues))
 			if err != nil {
-				writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 				return
 			}
 			info := ObjectInfo{Size: fileSize}
-			hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "") // do not try to verify encrypted content
+			hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", fileSize) // do not try to verify encrypted content
 			if err != nil {
-				writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 				return
 			}
+			pReader = NewPutObjReader(rawReader, hashReader, objectEncryptionKey)
 		}
 	}
 
-	objInfo, err := objectAPI.PutObject(ctx, bucket, object, hashReader, metadata)
+	objInfo, err := objectAPI.PutObject(ctx, bucket, object, pReader, opts)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -637,13 +689,14 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 
 	// Notify object created event.
 	defer sendEvent(eventArgs{
-		EventName:  event.ObjectCreatedPost,
-		BucketName: objInfo.Bucket,
-		Object:     objInfo,
-		ReqParams:  extractReqParams(r),
-		UserAgent:  r.UserAgent(),
-		Host:       host,
-		Port:       port,
+		EventName:    event.ObjectCreatedPost,
+		BucketName:   objInfo.Bucket,
+		Object:       objInfo,
+		ReqParams:    extractReqParams(r),
+		RespElements: extractRespElements(w),
+		UserAgent:    r.UserAgent(),
+		Host:         host,
+		Port:         port,
 	})
 
 	if successRedirect != "" {
@@ -679,17 +732,19 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 func (api objectAPIHandlers) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "HeadBucket")
 
+	defer logger.AuditLog(w, r, "HeadBucket", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponseHeadersOnly(w, ErrServerNotInitialized)
+		writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrServerNotInitialized))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponseHeadersOnly(w, s3Error)
+		writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(s3Error))
 		return
 	}
 
@@ -698,7 +753,7 @@ func (api objectAPIHandlers) HeadBucketHandler(w http.ResponseWriter, r *http.Re
 		getBucketInfo = api.CacheAPI().GetBucketInfo
 	}
 	if _, err := getBucketInfo(ctx, bucket); err != nil {
-		writeErrorResponseHeadersOnly(w, toAPIErrorCode(err))
+		writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
 		return
 	}
 
@@ -709,17 +764,19 @@ func (api objectAPIHandlers) HeadBucketHandler(w http.ResponseWriter, r *http.Re
 func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "DeleteBucket")
 
+	defer logger.AuditLog(w, r, "DeleteBucket", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.DeleteBucketAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -729,7 +786,7 @@ func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.
 	}
 	// Attempt to delete bucket.
 	if err := deleteBucket(ctx, bucket); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -741,7 +798,7 @@ func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.
 		if err := globalDNSConfig.Delete(bucket); err != nil {
 			// Deleting DNS entry failed, attempt to create the bucket again.
 			objectAPI.MakeBucketWithLocation(ctx, bucket, "")
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 	}

cmd/bucket-handlers_test.go

@@ -84,7 +84,7 @@ func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName stri
 		// initialize httptest Recorder, this records any mutations to response writer inside the handler.
 		rec := httptest.NewRecorder()
 		// construct HTTP request for Get bucket location.
-		req, err := newTestSignedRequestV4("GET", getBucketLocationURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey)
+		req, err := newTestSignedRequestV4("GET", getBucketLocationURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for GetBucketLocationHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -95,12 +95,12 @@ func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName stri
 			t.Errorf("Test %d: %s: Expected the response status to be `%d`, but instead found `%d`", i+1, instanceType, testCase.expectedRespStatus, rec.Code)
 		}
 		if !bytes.Equal(testCase.locationResponse, rec.Body.Bytes()) && testCase.shouldPass {
-			t.Errorf("Test %d: %s: Expected the response to be `%s`, but instead found `%s`", i+1, instanceType, string(testCase.locationResponse), string(rec.Body.Bytes()))
+			t.Errorf("Test %d: %s: Expected the response to be `%s`, but instead found `%s`", i+1, instanceType, string(testCase.locationResponse), rec.Body.String())
 		}
 		errorResponse := APIErrorResponse{}
 		err = xml.Unmarshal(rec.Body.Bytes(), &errorResponse)
 		if err != nil && !testCase.shouldPass {
-			t.Fatalf("Test %d: %s: Unable to marshal response body %s", i+1, instanceType, string(rec.Body.Bytes()))
+			t.Fatalf("Test %d: %s: Unable to marshal response body %s", i+1, instanceType, rec.Body.String())
 		}
 		if errorResponse.Resource != testCase.errorResponse.Resource {
 			t.Errorf("Test %d: %s: Expected the error resource to be `%s`, but instead found `%s`", i+1, instanceType, testCase.errorResponse.Resource, errorResponse.Resource)
@@ -116,7 +116,7 @@ func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName stri
 		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
-		reqV2, err := newTestSignedRequestV2("GET", getBucketLocationURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey)
+		reqV2, err := newTestSignedRequestV2("GET", getBucketLocationURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
 
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
@@ -131,7 +131,7 @@ func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName stri
 		errorResponse = APIErrorResponse{}
 		err = xml.Unmarshal(recV2.Body.Bytes(), &errorResponse)
 		if err != nil && !testCase.shouldPass {
-			t.Fatalf("Test %d: %s: Unable to marshal response body %s", i+1, instanceType, string(recV2.Body.Bytes()))
+			t.Fatalf("Test %d: %s: Unable to marshal response body %s", i+1, instanceType, recV2.Body.String())
 		}
 		if errorResponse.Resource != testCase.errorResponse.Resource {
 			t.Errorf("Test %d: %s: Expected the error resource to be `%s`, but instead found `%s`", i+1, instanceType, testCase.errorResponse.Resource, errorResponse.Resource)
@@ -220,7 +220,7 @@ func testHeadBucketHandler(obj ObjectLayer, instanceType, bucketName string, api
 		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
 		rec := httptest.NewRecorder()
 		// construct HTTP request for HEAD bucket.
-		req, err := newTestSignedRequestV4("HEAD", getHEADBucketURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey)
+		req, err := newTestSignedRequestV4("HEAD", getHEADBucketURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for HeadBucketHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -235,7 +235,7 @@ func testHeadBucketHandler(obj ObjectLayer, instanceType, bucketName string, api
 		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
-		reqV2, err := newTestSignedRequestV2("HEAD", getHEADBucketURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey)
+		reqV2, err := newTestSignedRequestV2("HEAD", getHEADBucketURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
 
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
@@ -437,7 +437,7 @@ func testListMultipartUploadsHandler(obj ObjectLayer, instanceType, bucketName s
 
 		// construct HTTP request for List multipart uploads endpoint.
 		u := getListMultipartUploadsURLWithParams("", testCase.bucket, testCase.prefix, testCase.keyMarker, testCase.uploadIDMarker, testCase.delimiter, testCase.maxUploads)
-		req, gerr := newTestSignedRequestV4("GET", u, 0, nil, testCase.accessKey, testCase.secretKey)
+		req, gerr := newTestSignedRequestV4("GET", u, 0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if gerr != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for ListMultipartUploadsHandler: <ERROR> %v", i+1, instanceType, gerr)
 		}
@@ -454,7 +454,7 @@ func testListMultipartUploadsHandler(obj ObjectLayer, instanceType, bucketName s
 		// construct HTTP request for PUT bucket policy endpoint.
 
 		// verify response for V2 signed HTTP request.
-		reqV2, err := newTestSignedRequestV2("GET", u, 0, nil, testCase.accessKey, testCase.secretKey)
+		reqV2, err := newTestSignedRequestV2("GET", u, 0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -471,7 +471,7 @@ func testListMultipartUploadsHandler(obj ObjectLayer, instanceType, bucketName s
 
 	// construct HTTP request for List multipart uploads endpoint.
 	u := getListMultipartUploadsURLWithParams("", bucketName, "", "", "", "", "")
-	req, err := newTestSignedRequestV4("GET", u, 0, nil, "", "") // Generate an anonymous request.
+	req, err := newTestSignedRequestV4("GET", u, 0, nil, "", "", nil) // Generate an anonymous request.
 	if err != nil {
 		t.Fatalf("Test %s: Failed to create HTTP request for ListMultipartUploadsHandler: <ERROR> %v", instanceType, err)
 	}
@@ -551,7 +551,7 @@ func testListBucketsHandler(obj ObjectLayer, instanceType, bucketName string, ap
 	for i, testCase := range testCases {
 		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
 		rec := httptest.NewRecorder()
-		req, lerr := newTestSignedRequestV4("GET", getListBucketURL(""), 0, nil, testCase.accessKey, testCase.secretKey)
+		req, lerr := newTestSignedRequestV4("GET", getListBucketURL(""), 0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if lerr != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for ListBucketsHandler: <ERROR> %v", i+1, instanceType, lerr)
 		}
@@ -568,7 +568,7 @@ func testListBucketsHandler(obj ObjectLayer, instanceType, bucketName string, ap
 		// construct HTTP request for PUT bucket policy endpoint.
 
 		// verify response for V2 signed HTTP request.
-		reqV2, err := newTestSignedRequestV2("GET", getListBucketURL(""), 0, nil, testCase.accessKey, testCase.secretKey)
+		reqV2, err := newTestSignedRequestV2("GET", getListBucketURL(""), 0, nil, testCase.accessKey, testCase.secretKey, nil)
 
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
@@ -625,7 +625,7 @@ func testAPIDeleteMultipleObjectsHandler(obj ObjectLayer, instanceType, bucketNa
 	for i := 0; i < 10; i++ {
 		objectName := "test-object-" + strconv.Itoa(i)
 		// uploading the object.
-		_, err = obj.PutObject(context.Background(), bucketName, objectName, mustGetHashReader(t, bytes.NewBuffer(contentBytes), int64(len(contentBytes)), "", sha256sum), nil)
+		_, err = obj.PutObject(context.Background(), bucketName, objectName, mustGetPutObjReader(t, bytes.NewBuffer(contentBytes), int64(len(contentBytes)), "", sha256sum), ObjectOptions{})
 		// if object upload fails stop the test.
 		if err != nil {
 			t.Fatalf("Put Object %d:  Error uploading object: <ERROR> %v", i, err)
@@ -645,8 +645,8 @@ func testAPIDeleteMultipleObjectsHandler(obj ObjectLayer, instanceType, bucketNa
 	getDeleteErrorList := func(objects []ObjectIdentifier) (deleteErrorList []DeleteError) {
 		for _, obj := range objects {
 			deleteErrorList = append(deleteErrorList, DeleteError{
-				Code:    errorCodeResponse[ErrAccessDenied].Code,
-				Message: errorCodeResponse[ErrAccessDenied].Description,
+				Code:    errorCodes[ErrAccessDenied].Code,
+				Message: errorCodes[ErrAccessDenied].Description,
 				Key:     obj.ObjectName,
 			})
 		}
@@ -745,7 +745,7 @@ func testAPIDeleteMultipleObjectsHandler(obj ObjectLayer, instanceType, bucketNa
 		// Generate a signed or anonymous request based on the testCase
 		if testCase.accessKey != "" {
 			req, err = newTestSignedRequestV4("POST", getDeleteMultipleObjectsURL("", bucketName),
-				int64(len(testCase.objects)), bytes.NewReader(testCase.objects), testCase.accessKey, testCase.secretKey)
+				int64(len(testCase.objects)), bytes.NewReader(testCase.objects), testCase.accessKey, testCase.secretKey, nil)
 		} else {
 			req, err = newTestRequest("POST", getDeleteMultipleObjectsURL("", bucketName),
 				int64(len(testCase.objects)), bytes.NewReader(testCase.objects))
@@ -785,7 +785,7 @@ func testAPIDeleteMultipleObjectsHandler(obj ObjectLayer, instanceType, bucketNa
 	nilBucket := "dummy-bucket"
 	nilObject := ""
 
-	nilReq, err := newTestSignedRequestV4("POST", getDeleteMultipleObjectsURL("", nilBucket), 0, nil, "", "")
+	nilReq, err := newTestSignedRequestV4("POST", getDeleteMultipleObjectsURL("", nilBucket), 0, nil, "", "", nil)
 	if err != nil {
 		t.Errorf("Minio %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}

cmd/bucket-notification-handlers.go

@@ -44,28 +44,30 @@ var errNoSuchNotifications = errors.New("The specified bucket does not have buck
 func (api objectAPIHandlers) GetBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "GetBucketNotification")
 
+	defer logger.AuditLog(w, r, "GetBucketNotification", mustGetClaimsFromToken(r))
+
 	vars := mux.Vars(r)
 	bucketName := vars["bucket"]
 
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if !objAPI.IsNotificationSupported() {
-		writeErrorResponse(w, ErrNotImplemented, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketNotificationAction, bucketName, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	_, err := objAPI.GetBucketInfo(ctx, bucketName)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -74,17 +76,21 @@ func (api objectAPIHandlers) GetBucketNotificationHandler(w http.ResponseWriter,
 	if err != nil {
 		// Ignore errNoSuchNotifications to comply with AWS S3.
 		if err != errNoSuchNotifications {
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 
 		nConfig = &event.Config{}
 	}
 
+	// If xml namespace is empty, set a default value before returning.
+	if nConfig.XMLNS == "" {
+		nConfig.XMLNS = "http://s3.amazonaws.com/doc/2006-03-01/"
+	}
+
 	notificationBytes, err := xml.Marshal(nConfig)
 	if err != nil {
-		logger.LogIf(ctx, err)
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -96,14 +102,16 @@ func (api objectAPIHandlers) GetBucketNotificationHandler(w http.ResponseWriter,
 func (api objectAPIHandlers) PutBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "PutBucketNotification")
 
+	defer logger.AuditLog(w, r, "PutBucketNotification", mustGetClaimsFromToken(r))
+
 	objectAPI := api.ObjectAPI()
 	if objectAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if !objectAPI.IsNotificationSupported() {
-		writeErrorResponse(w, ErrNotImplemented, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -111,36 +119,36 @@ func (api objectAPIHandlers) PutBucketNotificationHandler(w http.ResponseWriter,
 	bucketName := vars["bucket"]
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketNotificationAction, bucketName, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	_, err := objectAPI.GetBucketInfo(ctx, bucketName)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// PutBucketNotification always needs a Content-Length.
 	if r.ContentLength <= 0 {
-		writeErrorResponse(w, ErrMissingContentLength, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	var config *event.Config
 	config, err = event.ParseConfig(io.LimitReader(r.Body, r.ContentLength), globalServerConfig.GetRegion(), globalNotificationSys.targetList)
 	if err != nil {
-		apiErr := ErrMalformedXML
+		apiErr := errorCodes.ToAPIErr(ErrMalformedXML)
 		if event.IsEventError(err) {
-			apiErr = toAPIErrorCode(err)
+			apiErr = toAPIError(ctx, err)
 		}
 
-		writeErrorResponse(w, apiErr, r.URL)
+		writeErrorResponse(ctx, w, apiErr, r.URL, guessIsBrowserReq(r))
 		return
 	}
 
-	if err = saveNotificationConfig(objectAPI, bucketName, config); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+	if err = saveNotificationConfig(ctx, objectAPI, bucketName, config); err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -156,22 +164,29 @@ func (api objectAPIHandlers) PutBucketNotificationHandler(w http.ResponseWriter,
 func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "ListenBucketNotification")
 
+	defer logger.AuditLog(w, r, "ListenBucketNotification", mustGetClaimsFromToken(r))
+
 	// Validate if bucket exists.
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
-		return
-	}
-	if !objAPI.IsNotificationSupported() {
-		writeErrorResponse(w, ErrNotImplemented, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
+	if !objAPI.IsNotificationSupported() {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	if !objAPI.IsListenBucketSupported() {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
+		return
+	}
 	vars := mux.Vars(r)
 	bucketName := vars["bucket"]
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.ListenBucketNotificationAction, bucketName, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -179,11 +194,13 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 
 	var prefix string
 	if len(values["prefix"]) > 1 {
-		writeErrorResponse(w, ErrFilterNamePrefix, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrFilterNamePrefix), r.URL, guessIsBrowserReq(r))
+		return
 	}
+
 	if len(values["prefix"]) == 1 {
 		if err := event.ValidateFilterRuleValue(values["prefix"][0]); err != nil {
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 
@@ -192,11 +209,13 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 
 	var suffix string
 	if len(values["suffix"]) > 1 {
-		writeErrorResponse(w, ErrFilterNameSuffix, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrFilterNameSuffix), r.URL, guessIsBrowserReq(r))
+		return
 	}
+
 	if len(values["suffix"]) == 1 {
 		if err := event.ValidateFilterRuleValue(values["suffix"][0]); err != nil {
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 
@@ -209,7 +228,7 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 	for _, s := range values["events"] {
 		eventName, err := event.ParseName(s)
 		if err != nil {
-			writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
 
@@ -217,19 +236,19 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 	}
 
 	if _, err := objAPI.GetBucketInfo(ctx, bucketName); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	host, err := xnet.ParseHost(r.RemoteAddr)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	target, err := target.NewHTTPClientTarget(*host, w)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -237,8 +256,7 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 
 	if err = globalNotificationSys.AddRemoteTarget(bucketName, target, rulesMap); err != nil {
 		logger.GetReqInfo(ctx).AppendTags("target", target.ID().Name)
-		logger.LogIf(ctx, err)
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 	defer globalNotificationSys.RemoveRemoteTarget(bucketName, target.ID())
@@ -246,14 +264,13 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 
 	thisAddr, err := xnet.ParseHost(GetLocalPeer(globalEndpoints))
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if err = SaveListener(objAPI, bucketName, eventNames, pattern, target.ID(), *thisAddr); err != nil {
 		logger.GetReqInfo(ctx).AppendTags("target", target.ID().Name)
-		logger.LogIf(ctx, err)
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -263,8 +280,7 @@ func (api objectAPIHandlers) ListenBucketNotificationHandler(w http.ResponseWrit
 
 	if err = RemoveListener(objAPI, bucketName, target.ID(), *thisAddr); err != nil {
 		logger.GetReqInfo(ctx).AppendTags("target", target.ID().Name)
-		logger.LogIf(ctx, err)
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 }

cmd/bucket-policy-handlers.go

@@ -40,9 +40,11 @@ const (
 func (api objectAPIHandlers) PutBucketPolicyHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "PutBucketPolicy")
 
+	defer logger.AuditLog(w, r, "PutBucketPolicy", mustGetClaimsFromToken(r))
+
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -50,43 +52,43 @@ func (api objectAPIHandlers) PutBucketPolicyHandler(w http.ResponseWriter, r *ht
 	bucket := vars["bucket"]
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketPolicyAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Check if bucket exists.
 	if _, err := objAPI.GetBucketInfo(ctx, bucket); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Error out if Content-Length is missing.
 	// PutBucketPolicy always needs Content-Length.
 	if r.ContentLength <= 0 {
-		writeErrorResponse(w, ErrMissingContentLength, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Error out if Content-Length is beyond allowed size.
 	if r.ContentLength > maxBucketPolicySize {
-		writeErrorResponse(w, ErrEntityTooLarge, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	bucketPolicy, err := policy.ParseConfig(io.LimitReader(r.Body, r.ContentLength), bucket)
 	if err != nil {
-		writeErrorResponse(w, ErrMalformedPolicy, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPolicy), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Version in policy must not be empty
 	if bucketPolicy.Version == "" {
-		writeErrorResponse(w, ErrMalformedPolicy, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPolicy), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if err = objAPI.SetBucketPolicy(ctx, bucket, bucketPolicy); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -101,9 +103,11 @@ func (api objectAPIHandlers) PutBucketPolicyHandler(w http.ResponseWriter, r *ht
 func (api objectAPIHandlers) DeleteBucketPolicyHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "DeleteBucketPolicy")
 
+	defer logger.AuditLog(w, r, "DeleteBucketPolicy", mustGetClaimsFromToken(r))
+
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -111,18 +115,18 @@ func (api objectAPIHandlers) DeleteBucketPolicyHandler(w http.ResponseWriter, r
 	bucket := vars["bucket"]
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.DeleteBucketPolicyAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Check if bucket exists.
 	if _, err := objAPI.GetBucketInfo(ctx, bucket); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	if err := objAPI.DeleteBucketPolicy(ctx, bucket); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -137,9 +141,11 @@ func (api objectAPIHandlers) DeleteBucketPolicyHandler(w http.ResponseWriter, r
 func (api objectAPIHandlers) GetBucketPolicyHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "GetBucketPolicy")
 
+	defer logger.AuditLog(w, r, "GetBucketPolicy", mustGetClaimsFromToken(r))
+
 	objAPI := api.ObjectAPI()
 	if objAPI == nil {
-		writeErrorResponse(w, ErrServerNotInitialized, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
@@ -147,27 +153,26 @@ func (api objectAPIHandlers) GetBucketPolicyHandler(w http.ResponseWriter, r *ht
 	bucket := vars["bucket"]
 
 	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
-		writeErrorResponse(w, s3Error, r.URL)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Check if bucket exists.
 	if _, err := objAPI.GetBucketInfo(ctx, bucket); err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	// Read bucket access policy.
 	bucketPolicy, err := objAPI.GetBucketPolicy(ctx, bucket)
 	if err != nil {
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
 	policyData, err := json.Marshal(bucketPolicy)
 	if err != nil {
-		logger.LogIf(ctx, err)
-		writeErrorResponse(w, toAPIErrorCode(err), r.URL)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 

cmd/bucket-policy-handlers_test.go

@@ -254,7 +254,7 @@ func testPutBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		recV4 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV4, err := newTestSignedRequestV4("PUT", getPutPolicyURL("", testCase.bucketName),
-			int64(testCase.policyLen), testCase.bucketPolicyReader, testCase.accessKey, testCase.secretKey)
+			int64(testCase.policyLen), testCase.bucketPolicyReader, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -268,7 +268,7 @@ func testPutBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2("PUT", getPutPolicyURL("", testCase.bucketName),
-			int64(testCase.policyLen), testCase.bucketPolicyReader, testCase.accessKey, testCase.secretKey)
+			int64(testCase.policyLen), testCase.bucketPolicyReader, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -304,7 +304,7 @@ func testPutBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 	nilBucket := "dummy-bucket"
 
 	nilReq, err := newTestSignedRequestV4("PUT", getPutPolicyURL("", nilBucket),
-		0, nil, "", "")
+		0, nil, "", "", nil)
 
 	if err != nil {
 		t.Errorf("Minio %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
@@ -346,7 +346,7 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		recV4 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV4, err := newTestSignedRequestV4("PUT", getPutPolicyURL("", testPolicy.bucketName),
-			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey)
+			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -360,7 +360,7 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2("PUT", getPutPolicyURL("", testPolicy.bucketName),
-			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey)
+			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -417,7 +417,7 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		recV4 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV4, err := newTestSignedRequestV4("GET", getGetPolicyURL("", testCase.bucketName),
-			0, nil, testCase.accessKey, testCase.secretKey)
+			0, nil, testCase.accessKey, testCase.secretKey, nil)
 
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for GetBucketPolicyHandler: <ERROR> %v", i+1, err)
@@ -456,7 +456,7 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2("GET", getGetPolicyURL("", testCase.bucketName),
-			0, nil, testCase.accessKey, testCase.secretKey)
+			0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for GetBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -511,7 +511,7 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 	nilBucket := "dummy-bucket"
 
 	nilReq, err := newTestSignedRequestV4("GET", getGetPolicyURL("", nilBucket),
-		0, nil, "", "")
+		0, nil, "", "", nil)
 
 	if err != nil {
 		t.Errorf("Minio %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
@@ -591,7 +591,7 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 		recV4 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV4, err := newTestSignedRequestV4("PUT", getPutPolicyURL("", testPolicy.bucketName),
-			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey)
+			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -641,7 +641,7 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 		recV4 := httptest.NewRecorder()
 		// construct HTTP request for Delete bucket policy endpoint.
 		reqV4, err := newTestSignedRequestV4("DELETE", getDeletePolicyURL("", testCase.bucketName),
-			0, nil, testCase.accessKey, testCase.secretKey)
+			0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for GetBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -663,7 +663,7 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2("PUT", getPutPolicyURL("", testPolicy.bucketName),
-			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey)
+			int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)), testPolicy.accessKey, testPolicy.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -680,7 +680,7 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for Delete bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2("DELETE", getDeletePolicyURL("", testCase.bucketName),
-			0, nil, testCase.accessKey, testCase.secretKey)
+			0, nil, testCase.accessKey, testCase.secretKey, nil)
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for GetBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -714,7 +714,7 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 	nilBucket := "dummy-bucket"
 
 	nilReq, err := newTestSignedRequestV4("DELETE", getDeletePolicyURL("", nilBucket),
-		0, nil, "", "")
+		0, nil, "", "", nil)
 
 	if err != nil {
 		t.Errorf("Minio %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)

cmd/certs.go

@@ -68,24 +68,6 @@ func parsePublicCertFile(certFile string) (x509Certs []*x509.Certificate, err er
 }
 
 func getRootCAs(certsCAsDir string) (*x509.CertPool, error) {
-	// Get all CA file names.
-	var caFiles []string
-	fis, err := readDir(certsCAsDir)
-	if err != nil {
-		return nil, err
-	}
-	for _, fi := range fis {
-		// Skip all directories.
-		if hasSuffix(fi, slashSeparator) {
-			continue
-		}
-		// We are only interested in regular files here.
-		caFiles = append(caFiles, pathJoin(certsCAsDir, fi))
-	}
-	if len(caFiles) == 0 {
-		return nil, nil
-	}
-
 	rootCAs, _ := x509.SystemCertPool()
 	if rootCAs == nil {
 		// In some systems (like Windows) system cert pool is
@@ -94,16 +76,26 @@ func getRootCAs(certsCAsDir string) (*x509.CertPool, error) {
 		rootCAs = x509.NewCertPool()
 	}
 
-	// Load custom root CAs for client requests
-	for _, caFile := range caFiles {
-		caCert, err := ioutil.ReadFile(caFile)
-		if err != nil {
-			return nil, err
+	fis, err := readDir(certsCAsDir)
+	if err != nil {
+		if err == errFileNotFound {
+			err = nil // Return success if CA's directory is missing.
 		}
-
-		rootCAs.AppendCertsFromPEM(caCert)
+		return rootCAs, err
 	}
 
+	// Load all custom CA files.
+	for _, fi := range fis {
+		// Skip all directories.
+		if hasSuffix(fi, slashSeparator) {
+			continue
+		}
+		caCert, err := ioutil.ReadFile(pathJoin(certsCAsDir, fi))
+		if err != nil {
+			return rootCAs, err
+		}
+		rootCAs.AppendCertsFromPEM(caCert)
+	}
 	return rootCAs, nil
 }
 
@@ -150,24 +142,20 @@ func loadX509KeyPair(certFile, keyFile string) (tls.Certificate, error) {
 	return cert, nil
 }
 
-func getSSLConfig() (x509Certs []*x509.Certificate, rootCAs *x509.CertPool, c *certs.Certs, secureConn bool, err error) {
+func getTLSConfig() (x509Certs []*x509.Certificate, c *certs.Certs, secureConn bool, err error) {
 	if !(isFile(getPublicCertFile()) && isFile(getPrivateKeyFile())) {
-		return nil, nil, nil, false, nil
+		return nil, nil, false, nil
 	}
 
 	if x509Certs, err = parsePublicCertFile(getPublicCertFile()); err != nil {
-		return nil, nil, nil, false, err
+		return nil, nil, false, err
 	}
 
 	c, err = certs.New(getPublicCertFile(), getPrivateKeyFile(), loadX509KeyPair)
 	if err != nil {
-		return nil, nil, nil, false, err
-	}
-
-	if rootCAs, err = getRootCAs(getCADir()); err != nil {
-		return nil, nil, nil, false, err
+		return nil, nil, false, err
 	}
 
 	secureConn = true
-	return x509Certs, rootCAs, c, secureConn, nil
+	return x509Certs, c, secureConn, nil
 }

cmd/certs_test.go

@@ -223,7 +223,8 @@ func TestGetRootCAs(t *testing.T) {
 		certCAsDir  string
 		expectedErr error
 	}{
-		{"nonexistent-dir", errFileNotFound},
+		// ignores non-existent directories.
+		{"nonexistent-dir", nil},
 		// Ignores directories.
 		{dir1, nil},
 		// Ignore empty directory.

cmd/common-main.go

@@ -17,7 +17,7 @@
 package cmd
 
 import (
-	"context"
+	"crypto/tls"
 	"errors"
 	"net"
 	"os"
@@ -27,13 +27,15 @@ import (
 	"time"
 
 	etcd "github.com/coreos/etcd/clientv3"
-
+	dns2 "github.com/miekg/dns"
 	"github.com/minio/cli"
+	"github.com/minio/minio-go/pkg/set"
 	"github.com/minio/minio/cmd/logger"
+	"github.com/minio/minio/cmd/logger/target/console"
+	"github.com/minio/minio/cmd/logger/target/http"
 	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/dns"
-
-	"github.com/minio/minio-go/pkg/set"
+	xnet "github.com/minio/minio/pkg/net"
 )
 
 // Check for updates and print a notification message
@@ -48,90 +50,136 @@ func checkUpdate(mode string) {
 	}
 }
 
-// Initialize and load config from remote etcd or local config directory
-func initConfig() {
-	if globalEtcdClient != nil {
-		ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
-		resp, err := globalEtcdClient.Get(ctx, getConfigFile())
-		cancel()
-		// This means there are no entries in etcd with config file
-		// So create a new config
-		if err == nil && resp.Count == 0 {
-			logger.FatalIf(newConfig(), "Unable to initialize minio config for the first time.")
-			logger.Info("Created minio configuration file successfully at %v", globalEtcdClient.Endpoints())
-		} else {
-			// This means there is an entry in etcd, update it if required and proceed
-			if err == nil && resp.Count > 0 {
-				logger.FatalIf(migrateConfig(), "Config migration failed.")
-				logger.FatalIf(loadConfig(), "Unable to load config version: '%s'.", serverConfigVersion)
-			} else {
-				logger.FatalIf(err, "Unable to load config version: '%s'.", serverConfigVersion)
-			}
-		}
-		return
-	}
-
-	if isFile(getConfigFile()) {
-		logger.FatalIf(migrateConfig(), "Config migration failed")
-		logger.FatalIf(loadConfig(), "Unable to load the configuration file")
-	} else {
-		// Config file does not exist, we create it fresh and return upon success.
-		logger.FatalIf(newConfig(), "Unable to initialize minio config for the first time")
-		logger.Info("Created minio configuration file successfully at " + getConfigDir())
-	}
-}
-
 // Load logger targets based on user's configuration
 func loadLoggers() {
-	if globalServerConfig.Logger.Console.Enabled {
-		// Enable console logging
-		logger.AddTarget(logger.NewConsole())
+	auditEndpoint, ok := os.LookupEnv("MINIO_AUDIT_LOGGER_HTTP_ENDPOINT")
+	if ok {
+		// Enable audit HTTP logging through ENV.
+		logger.AddAuditTarget(http.New(auditEndpoint, NewCustomHTTPTransport()))
 	}
-	for _, l := range globalServerConfig.Logger.HTTP {
-		if l.Enabled {
-			// Enable http logging
-			logger.AddTarget(logger.NewHTTP(l.Endpoint, NewCustomHTTPTransport()))
+
+	loggerEndpoint, ok := os.LookupEnv("MINIO_LOGGER_HTTP_ENDPOINT")
+	if ok {
+		// Enable HTTP logging through ENV.
+		logger.AddTarget(http.New(loggerEndpoint, NewCustomHTTPTransport()))
+	} else {
+		for _, l := range globalServerConfig.Logger.HTTP {
+			if l.Enabled {
+				// Enable http logging
+				logger.AddTarget(http.New(l.Endpoint, NewCustomHTTPTransport()))
+			}
 		}
 	}
+
+	if globalServerConfig.Logger.Console.Enabled {
+		// Enable console logging
+		logger.AddTarget(console.New())
+	}
+
+}
+
+func newConfigDirFromCtx(ctx *cli.Context, option string, getDefaultDir func() string) (*ConfigDir, bool) {
+	var dir string
+	var dirSet bool
+
+	switch {
+	case ctx.IsSet(option):
+		dir = ctx.String(option)
+		dirSet = true
+	case ctx.GlobalIsSet(option):
+		dir = ctx.GlobalString(option)
+		dirSet = true
+		// cli package does not expose parent's option option.  Below code is workaround.
+		if dir == "" || dir == getDefaultDir() {
+			dirSet = false // Unset to false since GlobalIsSet() true is a false positive.
+			if ctx.Parent().GlobalIsSet(option) {
+				dir = ctx.Parent().GlobalString(option)
+				dirSet = true
+			}
+		}
+	default:
+		// Neither local nor global option is provided.  In this case, try to use
+		// default directory.
+		dir = getDefaultDir()
+		if dir == "" {
+			logger.FatalIf(errInvalidArgument, "%s option must be provided", option)
+		}
+	}
+
+	if dir == "" {
+		logger.FatalIf(errors.New("empty directory"), "%s directory cannot be empty", option)
+	}
+
+	// Disallow relative paths, figure out absolute paths.
+	dirAbs, err := filepath.Abs(dir)
+	logger.FatalIf(err, "Unable to fetch absolute path for %s=%s", option, dir)
+
+	logger.FatalIf(mkdirAllIgnorePerm(dirAbs), "Unable to create directory specified %s=%s", option, dir)
+
+	return &ConfigDir{path: dirAbs}, dirSet
 }
 
 func handleCommonCmdArgs(ctx *cli.Context) {
 
-	var configDir string
-
-	if ctx.IsSet("config-dir") {
-		configDir = ctx.String("config-dir")
-	} else if ctx.GlobalIsSet("config-dir") {
-		configDir = ctx.GlobalString("config-dir")
-		// cli package does not expose parent's "config-dir" option.  Below code is workaround.
-		if configDir == "" || configDir == getConfigDir() {
-			if ctx.Parent().GlobalIsSet("config-dir") {
-				configDir = ctx.Parent().GlobalString("config-dir")
-			}
-		}
-	} else {
-		// Neither local nor global config-dir option is provided.  In this case, try to use
-		// default config directory.
-		configDir = getConfigDir()
-		if configDir == "" {
-			logger.FatalIf(errors.New("missing option"), "config-dir option must be provided")
-		}
+	// Get "json" flag from command line argument and
+	// enable json and quite modes if json flag is turned on.
+	globalCLIContext.JSON = ctx.IsSet("json") || ctx.GlobalIsSet("json")
+	if globalCLIContext.JSON {
+		logger.EnableJSON()
 	}
 
-	if configDir == "" {
-		logger.FatalIf(errors.New("empty directory"), "Configuration directory cannot be empty")
+	// Get quiet flag from command line argument.
+	globalCLIContext.Quiet = ctx.IsSet("quiet") || ctx.GlobalIsSet("quiet")
+	if globalCLIContext.Quiet {
+		logger.EnableQuiet()
 	}
 
-	// Disallow relative paths, figure out absolute paths.
-	configDirAbs, err := filepath.Abs(configDir)
-	logger.FatalIf(err, "Unable to fetch absolute path for config directory %s", configDir)
-	setConfigDir(configDirAbs)
+	// Get anonymous flag from command line argument.
+	globalCLIContext.Anonymous = ctx.IsSet("anonymous") || ctx.GlobalIsSet("anonymous")
+	if globalCLIContext.Anonymous {
+		logger.EnableAnonymous()
+	}
+
+	// Fetch address option
+	globalCLIContext.Addr = ctx.GlobalString("address")
+	if globalCLIContext.Addr == "" || globalCLIContext.Addr == ":"+globalMinioDefaultPort {
+		globalCLIContext.Addr = ctx.String("address")
+	}
+
+	// Set all config, certs and CAs directories.
+	var configSet, certsSet bool
+	globalConfigDir, configSet = newConfigDirFromCtx(ctx, "config-dir", defaultConfigDir.Get)
+	globalCertsDir, certsSet = newConfigDirFromCtx(ctx, "certs-dir", defaultCertsDir.Get)
+
+	// Remove this code when we deprecate and remove config-dir.
+	// This code is to make sure we inherit from the config-dir
+	// option if certs-dir is not provided.
+	if !certsSet && configSet {
+		globalCertsDir = &ConfigDir{path: filepath.Join(globalConfigDir.Get(), certsDir)}
+	}
+
+	globalCertsCADir = &ConfigDir{path: filepath.Join(globalCertsDir.Get(), certsCADir)}
+
+	logger.FatalIf(mkdirAllIgnorePerm(globalCertsCADir.Get()), "Unable to create certs CA directory at %s", globalCertsCADir.Get())
+}
+
+// Parses the given compression exclude list `extensions` or `content-types`.
+func parseCompressIncludes(includes []string) ([]string, error) {
+	for _, e := range includes {
+		if len(e) == 0 {
+			return nil, uiErrInvalidCompressionIncludesValue(nil).Msg("extension/mime-type (%s) cannot be empty", e)
+		}
+	}
+	return includes, nil
 }
 
 func handleCommonEnvVars() {
+	compressEnvDelimiter := ","
 	// Start profiler if env is set.
 	if profiler := os.Getenv("_MINIO_PROFILER"); profiler != "" {
-		globalProfiler = startProfiler(profiler)
+		var err error
+		globalProfiler, err = startProfiler(profiler, "")
+		logger.FatalIf(err, "Unable to setup a profiler")
 	}
 
 	accessKey := os.Getenv("MINIO_ACCESS_KEY")
@@ -141,6 +189,7 @@ func handleCommonEnvVars() {
 		if err != nil {
 			logger.Fatal(uiErrInvalidCredentials(err), "Unable to validate credentials inherited from the shell environment")
 		}
+		cred.Expiration = timeSentinel
 
 		// credential Envs are set globally.
 		globalIsEnvCreds = true
@@ -150,7 +199,7 @@ func handleCommonEnvVars() {
 	if browser := os.Getenv("MINIO_BROWSER"); browser != "" {
 		browserFlag, err := ParseBoolFlag(browser)
 		if err != nil {
-			logger.Fatal(uiErrInvalidBrowserValue(nil).Msg("Unknown value `%s`", browser), "Unable to validate MINIO_BROWSER environment variable")
+			logger.Fatal(uiErrInvalidBrowserValue(nil).Msg("Unknown value `%s`", browser), "Invalid MINIO_BROWSER value in environment variable")
 		}
 
 		// browser Envs are set globally, this does not represent
@@ -169,28 +218,82 @@ func handleCommonEnvVars() {
 	etcdEndpointsEnv, ok := os.LookupEnv("MINIO_ETCD_ENDPOINTS")
 	if ok {
 		etcdEndpoints := strings.Split(etcdEndpointsEnv, ",")
+
+		var etcdSecure bool
+		for _, endpoint := range etcdEndpoints {
+			u, err := xnet.ParseURL(endpoint)
+			if err != nil {
+				logger.FatalIf(err, "Unable to initialize etcd with %s", etcdEndpoints)
+			}
+			// If one of the endpoint is https, we will use https directly.
+			etcdSecure = etcdSecure || u.Scheme == "https"
+		}
+
 		var err error
-		globalEtcdClient, err = etcd.New(etcd.Config{
-			Endpoints:         etcdEndpoints,
-			DialTimeout:       defaultDialTimeout,
-			DialKeepAliveTime: defaultDialKeepAlive,
-		})
+		if etcdSecure {
+			// This is only to support client side certificate authentication
+			// https://coreos.com/etcd/docs/latest/op-guide/security.html
+			etcdClientCertFile, ok1 := os.LookupEnv("MINIO_ETCD_CLIENT_CERT")
+			etcdClientCertKey, ok2 := os.LookupEnv("MINIO_ETCD_CLIENT_CERT_KEY")
+			var getClientCertificate func(*tls.CertificateRequestInfo) (*tls.Certificate, error)
+			if ok1 && ok2 {
+				getClientCertificate = func(unused *tls.CertificateRequestInfo) (*tls.Certificate, error) {
+					cert, terr := tls.LoadX509KeyPair(etcdClientCertFile, etcdClientCertKey)
+					return &cert, terr
+				}
+			}
+
+			globalEtcdClient, err = etcd.New(etcd.Config{
+				Endpoints:         etcdEndpoints,
+				DialTimeout:       defaultDialTimeout,
+				DialKeepAliveTime: defaultDialKeepAlive,
+				TLS: &tls.Config{
+					RootCAs:              globalRootCAs,
+					GetClientCertificate: getClientCertificate,
+				},
+			})
+		} else {
+			globalEtcdClient, err = etcd.New(etcd.Config{
+				Endpoints:         etcdEndpoints,
+				DialTimeout:       defaultDialTimeout,
+				DialKeepAliveTime: defaultDialKeepAlive,
+			})
+		}
 		logger.FatalIf(err, "Unable to initialize etcd with %s", etcdEndpoints)
 	}
 
 	globalDomainName, globalIsEnvDomainName = os.LookupEnv("MINIO_DOMAIN")
+	if globalDomainName != "" {
+		if _, ok = dns2.IsDomainName(globalDomainName); !ok {
+			logger.Fatal(uiErrInvalidDomainValue(nil).Msg("Unknown value `%s`", globalDomainName), "Invalid MINIO_DOMAIN value in environment variable")
+		}
+	}
 
 	minioEndpointsEnv, ok := os.LookupEnv("MINIO_PUBLIC_IPS")
 	if ok {
 		minioEndpoints := strings.Split(minioEndpointsEnv, ",")
-		globalDomainIPs = set.NewStringSet()
-		for i, ip := range minioEndpoints {
-			if net.ParseIP(ip) == nil {
-				logger.FatalIf(errInvalidArgument, "Unable to initialize Minio server with invalid MINIO_PUBLIC_IPS[%d]: %s", i, ip)
+		var domainIPs = set.NewStringSet()
+		for _, endpoint := range minioEndpoints {
+			if net.ParseIP(endpoint) == nil {
+				// Checking if the IP is a DNS entry.
+				addrs, err := net.LookupHost(endpoint)
+				if err != nil {
+					logger.FatalIf(err, "Unable to initialize Minio server with [%s] invalid entry found in MINIO_PUBLIC_IPS", endpoint)
+				}
+				for _, addr := range addrs {
+					domainIPs.Add(addr)
+				}
+				continue
 			}
-			globalDomainIPs.Add(ip)
+			domainIPs.Add(endpoint)
 		}
+		updateDomainIPs(domainIPs)
+	} else {
+		// Add found interfaces IP address to global domain IPS,
+		// loopback addresses will be naturally dropped.
+		updateDomainIPs(localIP4)
 	}
+
 	if globalDomainName != "" && !globalDomainIPs.IsEmpty() && globalEtcdClient != nil {
 		var err error
 		globalDNSConfig, err = dns.NewCoreDNS(globalDomainName, globalDomainIPs, globalMinioPort, globalEtcdClient)
@@ -271,7 +374,7 @@ func handleCommonEnvVars() {
 	if worm := os.Getenv("MINIO_WORM"); worm != "" {
 		wormFlag, err := ParseBoolFlag(worm)
 		if err != nil {
-			logger.Fatal(uiErrInvalidWormValue(nil).Msg("Unknown value `%s`", worm), "Unable to validate MINIO_WORM environment variable")
+			logger.Fatal(uiErrInvalidWormValue(nil).Msg("Unknown value `%s`", worm), "Invalid MINIO_WORM value in environment variable")
 		}
 
 		// worm Envs are set globally, this does not represent
@@ -279,4 +382,28 @@ func handleCommonEnvVars() {
 		globalIsEnvWORM = true
 		globalWORMEnabled = bool(wormFlag)
 	}
+
+	if compress := os.Getenv("MINIO_COMPRESS"); compress != "" {
+		globalIsCompressionEnabled = strings.EqualFold(compress, "true")
+	}
+
+	compressExtensions := os.Getenv("MINIO_COMPRESS_EXTENSIONS")
+	compressMimeTypes := os.Getenv("MINIO_COMPRESS_MIMETYPES")
+	if compressExtensions != "" || compressMimeTypes != "" {
+		globalIsEnvCompression = true
+		if compressExtensions != "" {
+			extensions, err := parseCompressIncludes(strings.Split(compressExtensions, compressEnvDelimiter))
+			if err != nil {
+				logger.Fatal(err, "Invalid MINIO_COMPRESS_EXTENSIONS value (`%s`)", extensions)
+			}
+			globalCompressExtensions = extensions
+		}
+		if compressMimeTypes != "" {
+			contenttypes, err := parseCompressIncludes(strings.Split(compressMimeTypes, compressEnvDelimiter))
+			if err != nil {
+				logger.Fatal(err, "Invalid MINIO_COMPRESS_MIMETYPES value (`%s`)", contenttypes)
+			}
+			globalCompressMimeTypes = contenttypes
+		}
+	}
 }

cmd/config-common.go

@@ -0,0 +1,151 @@
+/*
+ * Minio Cloud Storage, (C) 2018 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+
+	etcd "github.com/coreos/etcd/clientv3"
+	"github.com/minio/minio/cmd/logger"
+	"github.com/minio/minio/pkg/hash"
+)
+
+var errConfigNotFound = errors.New("config file not found")
+
+func readConfig(ctx context.Context, objAPI ObjectLayer, configFile string) ([]byte, error) {
+	var buffer bytes.Buffer
+	// Read entire content by setting size to -1
+	if err := objAPI.GetObject(ctx, minioMetaBucket, configFile, 0, -1, &buffer, "", ObjectOptions{}); err != nil {
+		// Treat object not found as config not found.
+		if isErrObjectNotFound(err) {
+			return nil, errConfigNotFound
+		}
+
+		logger.GetReqInfo(ctx).AppendTags("configFile", configFile)
+		logger.LogIf(ctx, err)
+		return nil, err
+	}
+
+	// Return config not found on empty content.
+	if buffer.Len() == 0 {
+		return nil, errConfigNotFound
+	}
+
+	return buffer.Bytes(), nil
+}
+
+func deleteConfigEtcd(ctx context.Context, client *etcd.Client, configFile string) error {
+	_, err := client.Delete(ctx, configFile)
+	return err
+}
+
+func deleteConfig(ctx context.Context, objAPI ObjectLayer, configFile string) error {
+	return objAPI.DeleteObject(ctx, minioMetaBucket, configFile)
+}
+
+func saveConfigEtcd(ctx context.Context, client *etcd.Client, configFile string, data []byte) error {
+	timeoutCtx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
+	defer cancel()
+	_, err := client.Put(timeoutCtx, configFile, string(data))
+	if err == context.DeadlineExceeded {
+		return fmt.Errorf("etcd setup is unreachable, please check your endpoints %s", client.Endpoints())
+	} else if err != nil {
+		return fmt.Errorf("unexpected error %s returned by etcd setup, please check your endpoints %s", err, client.Endpoints())
+	}
+	return nil
+}
+
+func saveConfig(ctx context.Context, objAPI ObjectLayer, configFile string, data []byte) error {
+	hashReader, err := hash.NewReader(bytes.NewReader(data), int64(len(data)), "", getSHA256Hash(data), int64(len(data)))
+	if err != nil {
+		return err
+	}
+
+	_, err = objAPI.PutObject(ctx, minioMetaBucket, configFile, NewPutObjReader(hashReader, nil, nil), ObjectOptions{})
+	return err
+}
+
+func readConfigEtcd(ctx context.Context, client *etcd.Client, configFile string) ([]byte, error) {
+	timeoutCtx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
+	defer cancel()
+	resp, err := client.Get(timeoutCtx, configFile)
+	if err != nil {
+		if err == context.DeadlineExceeded {
+			return nil, fmt.Errorf("etcd setup is unreachable, please check your endpoints %s", client.Endpoints())
+		}
+		return nil, fmt.Errorf("unexpected error %s returned by etcd setup, please check your endpoints %s", err, client.Endpoints())
+	}
+	if resp.Count == 0 {
+		return nil, errConfigNotFound
+	}
+	for _, ev := range resp.Kvs {
+		if string(ev.Key) == configFile {
+			return ev.Value, nil
+		}
+	}
+	return nil, errConfigNotFound
+}
+
+// watchConfigEtcd - watches for changes on `configFile` on etcd and loads them.
+func watchConfigEtcd(objAPI ObjectLayer, configFile string, loadCfgFn func(ObjectLayer) error) {
+	ctx, cancel := context.WithTimeout(context.Background(), defaultContextTimeout)
+	defer cancel()
+	for watchResp := range globalEtcdClient.Watch(ctx, configFile) {
+		for _, event := range watchResp.Events {
+			if event.IsModify() || event.IsCreate() {
+				loadCfgFn(objAPI)
+			}
+		}
+	}
+}
+
+func checkConfigEtcd(ctx context.Context, client *etcd.Client, configFile string) error {
+	timeoutCtx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
+	defer cancel()
+	resp, err := client.Get(timeoutCtx, configFile)
+	if err != nil {
+		if err == context.DeadlineExceeded {
+			return fmt.Errorf("etcd setup is unreachable, please check your endpoints %s", client.Endpoints())
+		}
+		return fmt.Errorf("unexpected error %s returned by etcd setup, please check your endpoints %s", err, client.Endpoints())
+	}
+	if resp.Count == 0 {
+		return errConfigNotFound
+	}
+	return nil
+}
+
+func checkConfig(ctx context.Context, objAPI ObjectLayer, configFile string) error {
+	if globalEtcdClient != nil {
+		return checkConfigEtcd(ctx, globalEtcdClient, configFile)
+	}
+
+	if _, err := objAPI.GetObjectInfo(ctx, minioMetaBucket, configFile, ObjectOptions{}); err != nil {
+		// Treat object not found as config not found.
+		if isErrObjectNotFound(err) {
+			return errConfigNotFound
+		}
+
+		logger.GetReqInfo(ctx).AppendTags("configFile", configFile)
+		logger.LogIf(ctx, err)
+		return err
+	}
+	return nil
+}

cmd/config-current.go

@@ -20,16 +20,19 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"os"
 	"reflect"
 	"sync"
 
-	"github.com/miekg/dns"
+	"github.com/minio/minio/cmd/crypto"
+	xhttp "github.com/minio/minio/cmd/http"
 	"github.com/minio/minio/cmd/logger"
-
 	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/event"
 	"github.com/minio/minio/pkg/event/target"
-	"github.com/minio/minio/pkg/quick"
+	"github.com/minio/minio/pkg/iam/policy"
+	"github.com/minio/minio/pkg/iam/validator"
+	xnet "github.com/minio/minio/pkg/net"
 )
 
 // Steps to move from version N to version N+1
@@ -41,9 +44,9 @@ import (
 // 6. Make changes in config-current_test.go for any test change
 
 // Config version
-const serverConfigVersion = "27"
+const serverConfigVersion = "33"
 
-type serverConfig = serverConfigV27
+type serverConfig = serverConfigV33
 
 var (
 	// globalServerConfig server config.
@@ -64,11 +67,21 @@ func (s *serverConfig) SetRegion(region string) {
 
 // GetRegion get current region.
 func (s *serverConfig) GetRegion() string {
+	if globalIsEnvRegion {
+		return globalServerRegion
+	}
+	if s == nil {
+		return ""
+	}
 	return s.Region
 }
 
 // SetCredential sets new credential and returns the previous credential.
 func (s *serverConfig) SetCredential(creds auth.Credentials) (prevCred auth.Credentials) {
+	if creds.IsValid() && globalActiveCred.IsValid() {
+		globalActiveCred = creds
+	}
+
 	// Save previous credential.
 	prevCred = s.Credential
 
@@ -81,15 +94,12 @@ func (s *serverConfig) SetCredential(creds auth.Credentials) (prevCred auth.Cred
 
 // GetCredentials get current credentials.
 func (s *serverConfig) GetCredential() auth.Credentials {
+	if globalActiveCred.IsValid() {
+		return globalActiveCred
+	}
 	return s.Credential
 }
 
-// SetBrowser set if browser is enabled.
-func (s *serverConfig) SetBrowser(b bool) {
-	// Set the new value.
-	s.Browser = BoolFlag(b)
-}
-
 // SetWorm set if worm is enabled.
 func (s *serverConfig) SetWorm(b bool) {
 	// Set the new value.
@@ -104,16 +114,23 @@ func (s *serverConfig) SetStorageClass(standardClass, rrsClass storageClass) {
 // GetStorageClass reads storage class fields from current config.
 // It returns the standard and reduced redundancy storage class struct
 func (s *serverConfig) GetStorageClass() (storageClass, storageClass) {
+	if globalIsStorageClass {
+		return globalStandardStorageClass, globalRRStorageClass
+	}
+	if s == nil {
+		return storageClass{}, storageClass{}
+	}
 	return s.StorageClass.Standard, s.StorageClass.RRS
 }
 
-// GetBrowser get current credentials.
-func (s *serverConfig) GetBrowser() bool {
-	return bool(s.Browser)
-}
-
 // GetWorm get current credentials.
 func (s *serverConfig) GetWorm() bool {
+	if globalIsEnvWORM {
+		return globalWORMEnabled
+	}
+	if s == nil {
+		return false
+	}
 	return bool(s.Worm)
 }
 
@@ -127,10 +144,24 @@ func (s *serverConfig) SetCacheConfig(drives, exclude []string, expiry int, maxu
 
 // GetCacheConfig gets the current cache config
 func (s *serverConfig) GetCacheConfig() CacheConfig {
+	if globalIsDiskCacheEnabled {
+		return CacheConfig{
+			Drives:  globalCacheDrives,
+			Exclude: globalCacheExcludes,
+			Expiry:  globalCacheExpiry,
+			MaxUse:  globalCacheMaxUse,
+		}
+	}
+	if s == nil {
+		return CacheConfig{}
+	}
 	return s.Cache
 }
 
 func (s *serverConfig) Validate() error {
+	if s == nil {
+		return nil
+	}
 	if s.Version != serverConfigVersion {
 		return fmt.Errorf("configuration version mismatch. Expected: ‘%s’, Got: ‘%s’", serverConfigVersion, s.Version)
 	}
@@ -143,84 +174,232 @@ func (s *serverConfig) Validate() error {
 	}
 
 	// Region: nothing to validate
-	// Browser, Worm, Cache and StorageClass values are already validated during json unmarshal
-
-	if s.Domain != "" {
-		if _, ok := dns.IsDomainName(s.Domain); !ok {
-			return errors.New("invalid domain name")
-		}
-	}
-
+	// Worm, Cache and StorageClass values are already validated during json unmarshal
 	for _, v := range s.Notify.AMQP {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("amqp: %s", err.Error())
+			return fmt.Errorf("amqp: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.Elasticsearch {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("elasticsearch: %s", err.Error())
+			return fmt.Errorf("elasticsearch: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.Kafka {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("kafka: %s", err.Error())
+			return fmt.Errorf("kafka: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.MQTT {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("mqtt: %s", err.Error())
+			return fmt.Errorf("mqtt: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.MySQL {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("mysql: %s", err.Error())
+			return fmt.Errorf("mysql: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.NATS {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("nats: %s", err.Error())
+			return fmt.Errorf("nats: %s", err)
+		}
+	}
+
+	for _, v := range s.Notify.NSQ {
+		if err := v.Validate(); err != nil {
+			return fmt.Errorf("nsq: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.PostgreSQL {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("postgreSQL: %s", err.Error())
+			return fmt.Errorf("postgreSQL: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.Redis {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("redis: %s", err.Error())
+			return fmt.Errorf("redis: %s", err)
 		}
 	}
 
 	for _, v := range s.Notify.Webhook {
 		if err := v.Validate(); err != nil {
-			return fmt.Errorf("webhook: %s", err.Error())
+			return fmt.Errorf("webhook: %s", err)
 		}
 	}
 
 	return nil
 }
 
-// Save config file to corresponding backend
-func Save(configFile string, data interface{}) error {
-	return quick.SaveConfig(data, configFile, globalEtcdClient)
+// SetCompressionConfig sets the current compression config
+func (s *serverConfig) SetCompressionConfig(extensions []string, mimeTypes []string) {
+	s.Compression.Extensions = extensions
+	s.Compression.MimeTypes = mimeTypes
+	s.Compression.Enabled = globalIsCompressionEnabled
 }
 
-// Load config from backend
-func Load(configFile string, data interface{}) (quick.Config, error) {
-	return quick.LoadConfig(configFile, globalEtcdClient, data)
+// GetCompressionConfig gets the current compression config
+func (s *serverConfig) GetCompressionConfig() compressionConfig {
+	return s.Compression
 }
 
-// GetVersion gets config version from backend
-func GetVersion(configFile string) (string, error) {
-	return quick.GetVersion(configFile, globalEtcdClient)
+func (s *serverConfig) loadFromEnvs() {
+	// If env is set override the credentials from config file.
+	if globalIsEnvCreds {
+		s.SetCredential(globalActiveCred)
+	}
+
+	if globalIsEnvWORM {
+		s.SetWorm(globalWORMEnabled)
+	}
+
+	if globalIsEnvRegion {
+		s.SetRegion(globalServerRegion)
+	}
+
+	if globalIsStorageClass {
+		s.SetStorageClass(globalStandardStorageClass, globalRRStorageClass)
+	}
+
+	if globalIsDiskCacheEnabled {
+		s.SetCacheConfig(globalCacheDrives, globalCacheExcludes, globalCacheExpiry, globalCacheMaxUse)
+	}
+
+	if err := Environment.LookupKMSConfig(s.KMS); err != nil {
+		logger.FatalIf(err, "Unable to setup the KMS")
+	}
+
+	if globalIsEnvCompression {
+		s.SetCompressionConfig(globalCompressExtensions, globalCompressMimeTypes)
+	}
+
+	if jwksURL, ok := os.LookupEnv("MINIO_IAM_JWKS_URL"); ok {
+		if u, err := xnet.ParseURL(jwksURL); err == nil {
+			s.OpenID.JWKS.URL = u
+			logger.FatalIf(s.OpenID.JWKS.PopulatePublicKey(), "Unable to populate public key from JWKS URL")
+		}
+	}
+
+	if opaURL, ok := os.LookupEnv("MINIO_IAM_OPA_URL"); ok {
+		if u, err := xnet.ParseURL(opaURL); err == nil {
+			s.Policy.OPA.URL = u
+			s.Policy.OPA.AuthToken = os.Getenv("MINIO_IAM_OPA_AUTHTOKEN")
+		}
+	}
+}
+
+// TestNotificationTargets tries to establish connections to all notification
+// targets when enabled. This is a good way to make sure all configurations
+// set by the user can work.
+func (s *serverConfig) TestNotificationTargets() error {
+	for k, v := range s.Notify.AMQP {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewAMQPTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("amqp(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.Elasticsearch {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewElasticsearchTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("elasticsearch(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.Kafka {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewKafkaTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("kafka(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.MQTT {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewMQTTTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("mqtt(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.MySQL {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewMySQLTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("mysql(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.NATS {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewNATSTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("nats(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.NSQ {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewNSQTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("nsq(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.PostgreSQL {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewPostgreSQLTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("postgreSQL(%s): %s", k, err.Error())
+		}
+		t.Close()
+	}
+
+	for k, v := range s.Notify.Redis {
+		if !v.Enable {
+			continue
+		}
+		t, err := target.NewRedisTarget(k, v)
+		if err != nil {
+			return fmt.Errorf("redis(%s): %s", k, err.Error())
+		}
+		t.Close()
+
+	}
+
+	return nil
 }
 
 // Returns the string describing a difference with the given
@@ -234,18 +413,18 @@ func (s *serverConfig) ConfigDiff(t *serverConfig) string {
 		return "Credential configuration differs"
 	case s.Region != t.Region:
 		return "Region configuration differs"
-	case s.Browser != t.Browser:
-		return "Browser configuration differs"
-	case s.Domain != t.Domain:
-		return "Domain configuration differs"
 	case s.StorageClass != t.StorageClass:
 		return "StorageClass configuration differs"
 	case !reflect.DeepEqual(s.Cache, t.Cache):
 		return "Cache configuration differs"
+	case !reflect.DeepEqual(s.Compression, t.Compression):
+		return "Compression configuration differs"
 	case !reflect.DeepEqual(s.Notify.AMQP, t.Notify.AMQP):
 		return "AMQP Notification configuration differs"
 	case !reflect.DeepEqual(s.Notify.NATS, t.Notify.NATS):
 		return "NATS Notification configuration differs"
+	case !reflect.DeepEqual(s.Notify.NSQ, t.Notify.NSQ):
+		return "NSQ Notification configuration differs"
 	case !reflect.DeepEqual(s.Notify.Elasticsearch, t.Notify.Elasticsearch):
 		return "ElasticSearch Notification configuration differs"
 	case !reflect.DeepEqual(s.Notify.Redis, t.Notify.Redis):
@@ -262,6 +441,8 @@ func (s *serverConfig) ConfigDiff(t *serverConfig) string {
 		return "MQTT Notification configuration differs"
 	case !reflect.DeepEqual(s.Logger, t.Logger):
 		return "Logger configuration differs"
+	case !reflect.DeepEqual(s.KMS, t.KMS):
+		return "KMS configuration differs"
 	case reflect.DeepEqual(s, t):
 		return ""
 	default:
@@ -279,7 +460,6 @@ func newServerConfig() *serverConfig {
 		Version:    serverConfigVersion,
 		Credential: cred,
 		Region:     globalMinioDefaultRegion,
-		Browser:    true,
 		StorageClass: storageClassConfig{
 			Standard: storageClass{},
 			RRS:      storageClass{},
@@ -290,7 +470,13 @@ func newServerConfig() *serverConfig {
 			Expiry:  globalCacheExpiry,
 			MaxUse:  globalCacheMaxUse,
 		},
+		KMS:    crypto.KMSConfig{},
 		Notify: notifier{},
+		Compression: compressionConfig{
+			Enabled:    false,
+			Extensions: globalCompressExtensions,
+			MimeTypes:  globalCompressMimeTypes,
+		},
 	}
 
 	// Make sure to initialize notification configs.
@@ -304,6 +490,8 @@ func newServerConfig() *serverConfig {
 	srvCfg.Notify.Redis["1"] = target.RedisArgs{}
 	srvCfg.Notify.NATS = make(map[string]target.NATSArgs)
 	srvCfg.Notify.NATS["1"] = target.NATSArgs{}
+	srvCfg.Notify.NSQ = make(map[string]target.NSQArgs)
+	srvCfg.Notify.NSQ["1"] = target.NSQArgs{}
 	srvCfg.Notify.PostgreSQL = make(map[string]target.PostgreSQLArgs)
 	srvCfg.Notify.PostgreSQL["1"] = target.PostgreSQLArgs{}
 	srvCfg.Notify.MySQL = make(map[string]target.MySQLArgs)
@@ -327,158 +515,116 @@ func newServerConfig() *serverConfig {
 	return srvCfg
 }
 
-// newConfig - initialize a new server config, saves env parameters if
-// found, otherwise use default parameters
-func newConfig() error {
-	// Initialize server config.
-	srvCfg, err := newQuickConfig(newServerConfig())
-	if err != nil {
-		return err
-	}
-
-	// If env is set override the credentials from config file.
-	if globalIsEnvCreds {
-		srvCfg.SetCredential(globalActiveCred)
-	}
-
-	if globalIsEnvBrowser {
-		srvCfg.SetBrowser(globalIsBrowserEnabled)
-	}
-
-	if globalIsEnvWORM {
-		srvCfg.SetWorm(globalWORMEnabled)
-	}
-
-	if globalIsEnvRegion {
-		srvCfg.SetRegion(globalServerRegion)
-	}
-
-	if globalIsEnvDomainName {
-		srvCfg.Domain = globalDomainName
-	}
-
-	if globalIsStorageClass {
-		srvCfg.SetStorageClass(globalStandardStorageClass, globalRRStorageClass)
-	}
-
-	if globalIsDiskCacheEnabled {
-		srvCfg.SetCacheConfig(globalCacheDrives, globalCacheExcludes, globalCacheExpiry, globalCacheMaxUse)
-	}
-
-	// hold the mutex lock before a new config is assigned.
-	// Save the new config globally.
-	// unlock the mutex.
-	globalServerConfigMu.Lock()
-	globalServerConfig = srvCfg
-	globalServerConfigMu.Unlock()
-
-	// Save config into file.
-	return Save(getConfigFile(), globalServerConfig)
-}
-
-// newQuickConfig - initialize a new server config, with an allocated
-// quick.Config interface.
-func newQuickConfig(srvCfg *serverConfig) (*serverConfig, error) {
-	qcfg, err := quick.NewConfig(srvCfg, globalEtcdClient)
-	if err != nil {
-		return nil, err
-	}
-
-	srvCfg.Config = qcfg
-	return srvCfg, nil
-}
-
-// getValidConfig - returns valid server configuration
-func getValidConfig() (*serverConfig, error) {
-	srvCfg := &serverConfig{
-		Region:  globalMinioDefaultRegion,
-		Browser: true,
-	}
-
-	var err error
-	srvCfg, err = newQuickConfig(srvCfg)
-	if err != nil {
-		return nil, err
-	}
-
-	configFile := getConfigFile()
-	if err = srvCfg.Load(configFile); err != nil {
-		return nil, err
-	}
-
-	if err = srvCfg.Validate(); err != nil {
-		return nil, err
-	}
-
-	return srvCfg, nil
-}
-
-// loadConfig - loads a new config from disk, overrides params from env
-// if found and valid
-func loadConfig() error {
-	srvCfg, err := getValidConfig()
-	if err != nil {
-		return uiErrInvalidConfig(nil).Msg(err.Error())
-	}
-
-	// If env is set override the credentials from config file.
-	if globalIsEnvCreds {
-		srvCfg.SetCredential(globalActiveCred)
-	}
-
-	if globalIsEnvBrowser {
-		srvCfg.SetBrowser(globalIsBrowserEnabled)
-	}
-
-	if globalIsEnvRegion {
-		srvCfg.SetRegion(globalServerRegion)
-	}
-
-	if globalIsEnvDomainName {
-		srvCfg.Domain = globalDomainName
-	}
-
-	if globalIsStorageClass {
-		srvCfg.SetStorageClass(globalStandardStorageClass, globalRRStorageClass)
-	}
-
-	if globalIsDiskCacheEnabled {
-		srvCfg.SetCacheConfig(globalCacheDrives, globalCacheExcludes, globalCacheExpiry, globalCacheMaxUse)
-	}
-
-	// hold the mutex lock before a new config is assigned.
-	globalServerConfigMu.Lock()
-	globalServerConfig = srvCfg
+func (s *serverConfig) loadToCachedConfigs() {
 	if !globalIsEnvCreds {
-		globalActiveCred = globalServerConfig.GetCredential()
-	}
-	if !globalIsEnvBrowser {
-		globalIsBrowserEnabled = globalServerConfig.GetBrowser()
+		globalActiveCred = s.GetCredential()
 	}
 	if !globalIsEnvWORM {
-		globalWORMEnabled = globalServerConfig.GetWorm()
+		globalWORMEnabled = s.GetWorm()
 	}
 	if !globalIsEnvRegion {
-		globalServerRegion = globalServerConfig.GetRegion()
-	}
-	if !globalIsEnvDomainName {
-		globalDomainName = globalServerConfig.Domain
+		globalServerRegion = s.GetRegion()
 	}
 	if !globalIsStorageClass {
-		globalStandardStorageClass, globalRRStorageClass = globalServerConfig.GetStorageClass()
+		globalStandardStorageClass, globalRRStorageClass = s.GetStorageClass()
 	}
 	if !globalIsDiskCacheEnabled {
-		cacheConf := globalServerConfig.GetCacheConfig()
+		cacheConf := s.GetCacheConfig()
 		globalCacheDrives = cacheConf.Drives
 		globalCacheExcludes = cacheConf.Exclude
 		globalCacheExpiry = cacheConf.Expiry
 		globalCacheMaxUse = cacheConf.MaxUse
 	}
+	if err := Environment.LookupKMSConfig(s.KMS); err != nil {
+		logger.FatalIf(err, "Unable to setup the KMS")
+	}
+
+	if !globalIsCompressionEnabled {
+		compressionConf := s.GetCompressionConfig()
+		globalCompressExtensions = compressionConf.Extensions
+		globalCompressMimeTypes = compressionConf.MimeTypes
+		globalIsCompressionEnabled = compressionConf.Enabled
+	}
+
+	globalIAMValidators = getAuthValidators(s)
+
+	if s.Policy.OPA.URL != nil && s.Policy.OPA.URL.String() != "" {
+		globalPolicyOPA = iampolicy.NewOpa(iampolicy.OpaArgs{
+			URL:         s.Policy.OPA.URL,
+			AuthToken:   s.Policy.OPA.AuthToken,
+			Transport:   NewCustomHTTPTransport(),
+			CloseRespFn: xhttp.DrainBody,
+		})
+	}
+}
+
+// newSrvConfig - initialize a new server config, saves env parameters if
+// found, otherwise use default parameters
+func newSrvConfig(objAPI ObjectLayer) error {
+	// Initialize server config.
+	srvCfg := newServerConfig()
+
+	// Override any values from ENVs.
+	srvCfg.loadFromEnvs()
+
+	// Load values to cached global values.
+	srvCfg.loadToCachedConfigs()
+
+	// hold the mutex lock before a new config is assigned.
+	globalServerConfigMu.Lock()
+	globalServerConfig = srvCfg
+	globalServerConfigMu.Unlock()
+
+	// Save config into file.
+	return saveServerConfig(context.Background(), objAPI, globalServerConfig)
+}
+
+// getValidConfig - returns valid server configuration
+func getValidConfig(objAPI ObjectLayer) (*serverConfig, error) {
+	srvCfg, err := readServerConfig(context.Background(), objAPI)
+	if err != nil {
+		return nil, err
+	}
+
+	return srvCfg, srvCfg.Validate()
+}
+
+// loadConfig - loads a new config from disk, overrides params from env
+// if found and valid
+func loadConfig(objAPI ObjectLayer) error {
+	srvCfg, err := getValidConfig(objAPI)
+	if err != nil {
+		return uiErrInvalidConfig(nil).Msg(err.Error())
+	}
+
+	// Override any values from ENVs.
+	srvCfg.loadFromEnvs()
+
+	// Load values to cached global values.
+	srvCfg.loadToCachedConfigs()
+
+	// hold the mutex lock before a new config is assigned.
+	globalServerConfigMu.Lock()
+	globalServerConfig = srvCfg
 	globalServerConfigMu.Unlock()
 
 	return nil
 }
 
+// getAuthValidators - returns ValidatorList which contains
+// enabled providers in server config.
+// A new authentication provider is added like below
+// * Add a new provider in pkg/iam/validator package.
+func getAuthValidators(config *serverConfig) *validator.Validators {
+	validators := validator.NewValidators()
+
+	if config.OpenID.JWKS.URL != nil {
+		validators.Add(validator.NewJWT(config.OpenID.JWKS))
+	}
+
+	return validators
+}
+
 // getNotificationTargets - returns TargetList which contains enabled targets in serverConfig.
 // A new notification target is added like below
 // * Add a new target in pkg/event/target package.
@@ -486,7 +632,9 @@ func loadConfig() error {
 // * Handle the configuration in this function to create/add into TargetList.
 func getNotificationTargets(config *serverConfig) *event.TargetList {
 	targetList := event.NewTargetList()
-
+	if config == nil {
+		return targetList
+	}
 	for id, args := range config.Notify.AMQP {
 		if args.Enable {
 			newTarget, err := target.NewAMQPTarget(id, args)
@@ -533,6 +681,7 @@ func getNotificationTargets(config *serverConfig) *event.TargetList {
 
 	for id, args := range config.Notify.MQTT {
 		if args.Enable {
+			args.RootCAs = globalRootCAs
 			newTarget, err := target.NewMQTTTarget(id, args)
 			if err != nil {
 				logger.LogIf(context.Background(), err)
@@ -573,6 +722,20 @@ func getNotificationTargets(config *serverConfig) *event.TargetList {
 		}
 	}
 
+	for id, args := range config.Notify.NSQ {
+		if args.Enable {
+			newTarget, err := target.NewNSQTarget(id, args)
+			if err != nil {
+				logger.LogIf(context.Background(), err)
+				continue
+			}
+			if err = targetList.Add(newTarget); err != nil {
+				logger.LogIf(context.Background(), err)
+				continue
+			}
+		}
+	}
+
 	for id, args := range config.Notify.PostgreSQL {
 		if args.Enable {
 			newTarget, err := target.NewPostgreSQLTarget(id, args)
@@ -603,6 +766,7 @@ func getNotificationTargets(config *serverConfig) *event.TargetList {
 
 	for id, args := range config.Notify.Webhook {
 		if args.Enable {
+			args.RootCAs = globalRootCAs
 			newTarget := target.NewWebhookTarget(id, args)
 			if err := targetList.Add(newTarget); err != nil {
 				logger.LogIf(context.Background(), err)

cmd/config-current_test.go

@@ -17,9 +17,9 @@
 package cmd
 
 import (
-	"io/ioutil"
+	"context"
 	"os"
-	"path/filepath"
+	"path"
 	"testing"
 
 	"github.com/minio/minio/pkg/auth"
@@ -27,12 +27,15 @@ import (
 )
 
 func TestServerConfig(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+	objLayer, fsDir, err := prepareFS()
 	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(fsDir)
+
+	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
 		t.Fatalf("Init Test config failed")
 	}
-	// remove the root directory after the test ends.
-	defer os.RemoveAll(rootPath)
 
 	if globalServerConfig.GetRegion() != globalMinioDefaultRegion {
 		t.Errorf("Expecting region `us-east-1` found %s", globalServerConfig.GetRegion())
@@ -49,16 +52,12 @@ func TestServerConfig(t *testing.T) {
 		t.Errorf("Expecting version %s found %s", globalServerConfig.GetVersion(), serverConfigVersion)
 	}
 
-	// Attempt to save.
-	if err := globalServerConfig.Save(getConfigFile()); err != nil {
+	if err := saveServerConfig(context.Background(), objLayer, globalServerConfig); err != nil {
 		t.Fatalf("Unable to save updated config file %s", err)
 	}
 
-	// Do this only once here.
-	setConfigDir(rootPath)
-
 	// Initialize server config.
-	if err := loadConfig(); err != nil {
+	if err := loadConfig(objLayer); err != nil {
 		t.Fatalf("Unable to initialize from updated config file %s", err)
 	}
 }
@@ -68,6 +67,9 @@ func TestServerConfigWithEnvs(t *testing.T) {
 	os.Setenv("MINIO_BROWSER", "off")
 	defer os.Unsetenv("MINIO_BROWSER")
 
+	os.Setenv("MINIO_WORM", "on")
+	defer os.Unsetenv("MINIO_WORM")
+
 	os.Setenv("MINIO_ACCESS_KEY", "minio")
 	defer os.Unsetenv("MINIO_ACCESS_KEY")
 
@@ -82,61 +84,70 @@ func TestServerConfigWithEnvs(t *testing.T) {
 
 	defer resetGlobalIsEnvs()
 
-	// Get test root.
-	rootPath, err := getTestRoot()
+	objLayer, fsDir, err := prepareFS()
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
+	defer os.RemoveAll(fsDir)
+
+	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
+		t.Fatalf("Init Test config failed")
+	}
+
+	globalObjLayerMutex.Lock()
+	globalObjectAPI = objLayer
+	globalObjLayerMutex.Unlock()
 
 	serverHandleEnvVars()
 
-	// Do this only once here.
-	setConfigDir(rootPath)
-
 	// Init config
-	initConfig()
+	initConfig(objLayer)
 
-	// remove the root directory after the test ends.
-	defer os.RemoveAll(rootPath)
-
-	// Check if serverConfig has
-	if globalServerConfig.GetBrowser() {
-		t.Errorf("Expecting browser is set to false found %v", globalServerConfig.GetBrowser())
+	// Check if serverConfig has browser disabled
+	if globalIsBrowserEnabled {
+		t.Error("Expected browser to be disabled but it is not")
 	}
 
-	// Check if serverConfig has
+	// Check if serverConfig returns WORM config from the env
+	if !globalServerConfig.GetWorm() {
+		t.Error("Expected WORM to be enabled but it is not")
+	}
+
+	// Check if serverConfig has region from the environment
 	if globalServerConfig.GetRegion() != "us-west-1" {
-		t.Errorf("Expecting region to be \"us-west-1\" found %v", globalServerConfig.GetRegion())
+		t.Errorf("Expected region to be \"us-west-1\", found %v", globalServerConfig.GetRegion())
 	}
 
-	// Check if serverConfig has
+	// Check if serverConfig has credentials from the environment
 	cred := globalServerConfig.GetCredential()
 
 	if cred.AccessKey != "minio" {
-		t.Errorf("Expecting access key to be `minio` found %s", cred.AccessKey)
+		t.Errorf("Expected access key to be `minio`, found %s", cred.AccessKey)
 	}
 
 	if cred.SecretKey != "minio123" {
-		t.Errorf("Expecting access key to be `minio123` found %s", cred.SecretKey)
+		t.Errorf("Expected access key to be `minio123`, found %s", cred.SecretKey)
 	}
 
-	if globalServerConfig.Domain != "domain.com" {
-		t.Errorf("Expecting Domain to be `domain.com` found " + globalServerConfig.Domain)
+	// Check if serverConfig has the correct domain
+	if globalDomainName != "domain.com" {
+		t.Errorf("Expected Domain to be `domain.com`, found " + globalDomainName)
 	}
 }
 
 // Tests config validator..
 func TestValidateConfig(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+	objLayer, fsDir, err := prepareFS()
 	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(fsDir)
+
+	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
 		t.Fatalf("Init Test config failed")
 	}
 
-	// remove the root directory after the test ends.
-	defer os.RemoveAll(rootPath)
-
-	configPath := filepath.Join(rootPath, minioConfigFile)
-
+	configPath := path.Join(minioConfigPrefix, minioConfigFile)
 	v := serverConfigVersion
 
 	testCases := []struct {
@@ -177,7 +188,7 @@ func TestValidateConfig(t *testing.T) {
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "amqp": { "1": { "enable": true, "url": "", "exchange": "", "routingKey": "", "exchangeType": "", "mandatory": false, "immediate": false, "durable": false, "internal": false, "noWait": false, "autoDeleted": false }}}}`, false},
 
 		// Test 12 - Test NATS
-		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "nats": { "1": { "enable": true, "address": "", "subject": "", "username": "", "password": "", "token": "", "secure": false, "pingInterval": 0, "streaming": { "enable": false, "clusterID": "", "clientID": "", "async": false, "maxPubAcksInflight": 0 } } }}}`, false},
+		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "nats": { "1": { "enable": true, "address": "", "subject": "", "username": "", "password": "", "token": "", "secure": false, "pingInterval": 0, "streaming": { "enable": false, "clusterID": "", "async": false, "maxPubAcksInflight": 0 } } }}}`, false},
 
 		// Test 13 - Test ElasticSearch
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "elasticsearch": { "1": { "enable": true, "url": "", "index": "" } }}}`, false},
@@ -222,18 +233,21 @@ func TestValidateConfig(t *testing.T) {
 		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "redis": { "1": { "enable": true, "format": "namespace", "address": "example.com:80", "password": "xxx", "key": "key1" } }}}`, true},
 
 		// Test 27 - Test MQTT
-		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "mqtt": { "1": { "enable": true, "broker": "",  "topic": "", "qos": 0, "clientId": "", "username": "", "password": ""}}}}`, false},
+		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "mqtt": { "1": { "enable": true, "broker": "",  "topic": "", "qos": 0, "username": "", "password": "", "queueDir": ""}}}}`, false},
+
+		// Test 28 - Test NSQ
+		{`{"version": "` + v + `", "credential": { "accessKey": "minio", "secretKey": "minio123" }, "region": "us-east-1", "browser": "on", "notify": { "nsq": { "1": { "enable": true, "nsqdAddress": "", "topic": ""} }}}`, false},
 	}
 
 	for i, testCase := range testCases {
-		if werr := ioutil.WriteFile(configPath, []byte(testCase.configData), 0700); werr != nil {
-			t.Fatal(werr)
+		if err = saveConfig(context.Background(), objLayer, configPath, []byte(testCase.configData)); err != nil {
+			t.Fatal(err)
 		}
-		_, verr := getValidConfig()
-		if testCase.shouldPass && verr != nil {
-			t.Errorf("Test %d, should pass but it failed with err = %v", i+1, verr)
+		_, err = getValidConfig(objLayer)
+		if testCase.shouldPass && err != nil {
+			t.Errorf("Test %d, should pass but it failed with err = %v", i+1, err)
 		}
-		if !testCase.shouldPass && verr == nil {
+		if !testCase.shouldPass && err == nil {
 			t.Errorf("Test %d, should fail but it succeeded.", i+1)
 		}
 	}
@@ -249,77 +263,87 @@ func TestConfigDiff(t *testing.T) {
 		{&serverConfig{}, nil, "Given configuration is empty"},
 		// 2
 		{
-			&serverConfig{Credential: auth.Credentials{"u1", "p1"}},
-			&serverConfig{Credential: auth.Credentials{"u1", "p2"}},
+			&serverConfig{Credential: auth.Credentials{
+				AccessKey:  "u1",
+				SecretKey:  "p1",
+				Expiration: timeSentinel,
+			}},
+			&serverConfig{Credential: auth.Credentials{
+				AccessKey:  "u1",
+				SecretKey:  "p2",
+				Expiration: timeSentinel,
+			}},
 			"Credential configuration differs",
 		},
 		// 3
 		{&serverConfig{Region: "us-east-1"}, &serverConfig{Region: "us-west-1"}, "Region configuration differs"},
 		// 4
-		{&serverConfig{Browser: false}, &serverConfig{Browser: true}, "Browser configuration differs"},
-		// 5
-		{&serverConfig{Domain: "domain1"}, &serverConfig{Domain: "domain2"}, "Domain configuration differs"},
-		// 6
 		{
 			&serverConfig{StorageClass: storageClassConfig{storageClass{"1", 8}, storageClass{"2", 6}}},
 			&serverConfig{StorageClass: storageClassConfig{storageClass{"1", 8}, storageClass{"2", 4}}},
 			"StorageClass configuration differs",
 		},
-		// 7
+		// 5
 		{
 			&serverConfig{Notify: notifier{AMQP: map[string]target.AMQPArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{AMQP: map[string]target.AMQPArgs{"1": {Enable: false}}}},
 			"AMQP Notification configuration differs",
 		},
-		// 8
+		// 6
 		{
 			&serverConfig{Notify: notifier{NATS: map[string]target.NATSArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{NATS: map[string]target.NATSArgs{"1": {Enable: false}}}},
 			"NATS Notification configuration differs",
 		},
-		// 9
+		// 7
+		{
+			&serverConfig{Notify: notifier{NSQ: map[string]target.NSQArgs{"1": {Enable: true}}}},
+			&serverConfig{Notify: notifier{NSQ: map[string]target.NSQArgs{"1": {Enable: false}}}},
+			"NSQ Notification configuration differs",
+		},
+		// 8
 		{
 			&serverConfig{Notify: notifier{Elasticsearch: map[string]target.ElasticsearchArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{Elasticsearch: map[string]target.ElasticsearchArgs{"1": {Enable: false}}}},
 			"ElasticSearch Notification configuration differs",
 		},
-		// 10
+		// 9
 		{
 			&serverConfig{Notify: notifier{Redis: map[string]target.RedisArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{Redis: map[string]target.RedisArgs{"1": {Enable: false}}}},
 			"Redis Notification configuration differs",
 		},
-		// 11
+		// 10
 		{
 			&serverConfig{Notify: notifier{PostgreSQL: map[string]target.PostgreSQLArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{PostgreSQL: map[string]target.PostgreSQLArgs{"1": {Enable: false}}}},
 			"PostgreSQL Notification configuration differs",
 		},
-		// 12
+		// 11
 		{
 			&serverConfig{Notify: notifier{Kafka: map[string]target.KafkaArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{Kafka: map[string]target.KafkaArgs{"1": {Enable: false}}}},
 			"Kafka Notification configuration differs",
 		},
-		// 13
+		// 12
 		{
 			&serverConfig{Notify: notifier{Webhook: map[string]target.WebhookArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{Webhook: map[string]target.WebhookArgs{"1": {Enable: false}}}},
 			"Webhook Notification configuration differs",
 		},
-		// 14
+		// 13
 		{
 			&serverConfig{Notify: notifier{MySQL: map[string]target.MySQLArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{MySQL: map[string]target.MySQLArgs{"1": {Enable: false}}}},
 			"MySQL Notification configuration differs",
 		},
-		// 15
+		// 14
 		{
 			&serverConfig{Notify: notifier{MQTT: map[string]target.MQTTArgs{"1": {Enable: true}}}},
 			&serverConfig{Notify: notifier{MQTT: map[string]target.MQTTArgs{"1": {Enable: false}}}},
 			"MQTT Notification configuration differs",
 		},
-		// 16
+		// 15
 		{
 			&serverConfig{Logger: loggerConfig{
 				Console: loggerConsole{Enabled: true},

cmd/config-dir.go

@@ -19,7 +19,6 @@ package cmd
 import (
 	"os"
 	"path/filepath"
-	"sync"
 
 	homedir "github.com/mitchellh/go-homedir"
 )
@@ -28,9 +27,6 @@ const (
 	// Default minio configuration directory where below configuration files/directories are stored.
 	defaultMinioConfigDir = ".minio"
 
-	// Minio configuration file.
-	minioConfigFile = "config.json"
-
 	// Directory contains below files/directories for HTTPS configuration.
 	certsDir = "certs"
 
@@ -44,55 +40,9 @@ const (
 	privateKeyFile = "private.key"
 )
 
-// ConfigDir - configuration directory with locking.
+// ConfigDir - points to a user set directory.
 type ConfigDir struct {
-	sync.Mutex
-	dir string
-}
-
-// Set - saves given directory as configuration directory.
-func (config *ConfigDir) Set(dir string) {
-	config.Lock()
-	defer config.Unlock()
-
-	config.dir = dir
-}
-
-// Get - returns current configuration directory.
-func (config *ConfigDir) Get() string {
-	config.Lock()
-	defer config.Unlock()
-
-	return config.dir
-}
-
-func (config *ConfigDir) getCertsDir() string {
-	return filepath.Join(config.Get(), certsDir)
-}
-
-// GetCADir - returns certificate CA directory.
-func (config *ConfigDir) GetCADir() string {
-	return filepath.Join(config.getCertsDir(), certsCADir)
-}
-
-// Create - creates configuration directory tree.
-func (config *ConfigDir) Create() error {
-	return os.MkdirAll(config.GetCADir(), 0700)
-}
-
-// GetMinioConfigFile - returns absolute path of config.json file.
-func (config *ConfigDir) GetMinioConfigFile() string {
-	return filepath.Join(config.Get(), minioConfigFile)
-}
-
-// GetPublicCertFile - returns absolute path of public.crt file.
-func (config *ConfigDir) GetPublicCertFile() string {
-	return filepath.Join(config.getCertsDir(), publicCertFile)
-}
-
-// GetPrivateKeyFile - returns absolute path of private.key file.
-func (config *ConfigDir) GetPrivateKeyFile() string {
-	return filepath.Join(config.getCertsDir(), privateKeyFile)
+	path string
 }
 
 func getDefaultConfigDir() string {
@@ -104,32 +54,54 @@ func getDefaultConfigDir() string {
 	return filepath.Join(homeDir, defaultMinioConfigDir)
 }
 
-var configDir = &ConfigDir{dir: getDefaultConfigDir()}
-
-func setConfigDir(dir string) {
-	configDir.Set(dir)
+func getDefaultCertsDir() string {
+	return filepath.Join(getDefaultConfigDir(), certsDir)
 }
 
-func getConfigDir() string {
-	return configDir.Get()
+func getDefaultCertsCADir() string {
+	return filepath.Join(getDefaultCertsDir(), certsCADir)
 }
 
-func getCADir() string {
-	return configDir.GetCADir()
+var (
+	// Default config, certs and CA directories.
+	defaultConfigDir  = &ConfigDir{path: getDefaultConfigDir()}
+	defaultCertsDir   = &ConfigDir{path: getDefaultCertsDir()}
+	defaultCertsCADir = &ConfigDir{path: getDefaultCertsCADir()}
+
+	// Points to current configuration directory -- deprecated, to be removed in future.
+	globalConfigDir = defaultConfigDir
+	// Points to current certs directory set by user with --certs-dir
+	globalCertsDir = defaultCertsDir
+	// Points to relative path to certs directory and is <value-of-certs-dir>/CAs
+	globalCertsCADir = defaultCertsCADir
+)
+
+// Get - returns current directory.
+func (dir *ConfigDir) Get() string {
+	return dir.path
 }
 
-func createConfigDir() error {
-	return configDir.Create()
+// Attempts to create all directories, ignores any permission denied errors.
+func mkdirAllIgnorePerm(path string) error {
+	err := os.MkdirAll(path, 0700)
+	if err != nil {
+		// It is possible in kubernetes like deployments this directory
+		// is already mounted and is not writable, ignore any write errors.
+		if os.IsPermission(err) {
+			err = nil
+		}
+	}
+	return err
 }
 
 func getConfigFile() string {
-	return configDir.GetMinioConfigFile()
+	return filepath.Join(globalConfigDir.Get(), minioConfigFile)
 }
 
 func getPublicCertFile() string {
-	return configDir.GetPublicCertFile()
+	return filepath.Join(globalCertsDir.Get(), publicCertFile)
 }
 
 func getPrivateKeyFile() string {
-	return configDir.GetPrivateKeyFile()
+	return filepath.Join(globalCertsDir.Get(), privateKeyFile)
 }

cmd/config-migrate.go

@@ -17,15 +17,20 @@
 package cmd
 
 import (
+	"context"
+	"encoding/json"
 	"fmt"
 	"os"
+	"path"
 	"path/filepath"
 
+	"github.com/minio/minio/cmd/crypto"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/auth"
-	"github.com/minio/minio/pkg/dns"
 	"github.com/minio/minio/pkg/event"
 	"github.com/minio/minio/pkg/event/target"
+	"github.com/minio/minio/pkg/iam/policy"
+	"github.com/minio/minio/pkg/iam/validator"
 	xnet "github.com/minio/minio/pkg/net"
 	"github.com/minio/minio/pkg/quick"
 )
@@ -33,7 +38,22 @@ import (
 // DO NOT EDIT following message template, please open a github issue to discuss instead.
 var configMigrateMSGTemplate = "Configuration file %s migrated from version '%s' to '%s' successfully."
 
-// Migrates all config versions from "1" to "18".
+// Save config file to corresponding backend
+func Save(configFile string, data interface{}) error {
+	return quick.SaveConfig(data, configFile, globalEtcdClient)
+}
+
+// Load config from backend
+func Load(configFile string, data interface{}) (quick.Config, error) {
+	return quick.LoadConfig(configFile, globalEtcdClient, data)
+}
+
+// GetVersion gets config version from backend
+func GetVersion(configFile string) (string, error) {
+	return quick.GetVersion(configFile, globalEtcdClient)
+}
+
+// Migrates all config versions from "1" to "28".
 func migrateConfig() error {
 	// Purge all configs with version '1',
 	// this is a special case since version '1' used
@@ -45,6 +65,9 @@ func migrateConfig() error {
 	// Load only config version information.
 	version, err := GetVersion(getConfigFile())
 	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
 		return err
 	}
 
@@ -193,6 +216,11 @@ func migrateConfig() error {
 			return err
 		}
 		fallthrough
+	case "27":
+		if err = migrateV27ToV28(); err != nil {
+			return err
+		}
+		fallthrough
 	case serverConfigVersion:
 		// No migration needed. this always points to current version.
 		err = nil
@@ -202,11 +230,11 @@ func migrateConfig() error {
 
 // Version '1' is not supported anymore and deprecated, safe to delete.
 func purgeV1() error {
-	configFile := filepath.Join(getConfigDir(), "fsUsers.json")
+	configFile := filepath.Join(globalConfigDir.Get(), "fsUsers.json")
 
 	cv1 := &configV1{}
 	_, err := Load(configFile, cv1)
-	if os.IsNotExist(err) || err == dns.ErrNoEntriesFound {
+	if os.IsNotExist(err) {
 		return nil
 	} else if err != nil {
 		return fmt.Errorf("Unable to load config version ‘1’. %v", err)
@@ -890,7 +918,7 @@ func migrateV12ToV13() error {
 	// Copy over fields from V12 into V13 config struct
 	srvConfig := &serverConfigV13{
 		Logger: &loggerV7{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "13"
 	srvConfig.Credential = cv12.Credential
@@ -970,7 +998,7 @@ func migrateV13ToV14() error {
 	// Copy over fields from V13 into V14 config struct
 	srvConfig := &serverConfigV14{
 		Logger: &loggerV7{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "14"
 	srvConfig.Credential = cv13.Credential
@@ -1055,7 +1083,7 @@ func migrateV14ToV15() error {
 	// Copy over fields from V14 into V15 config struct
 	srvConfig := &serverConfigV15{
 		Logger: &loggerV7{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "15"
 	srvConfig.Credential = cv14.Credential
@@ -1145,7 +1173,7 @@ func migrateV15ToV16() error {
 	// Copy over fields from V15 into V16 config struct
 	srvConfig := &serverConfigV16{
 		Logger: &loggers{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "16"
 	srvConfig.Credential = cv15.Credential
@@ -1235,7 +1263,7 @@ func migrateV16ToV17() error {
 	// Copy over fields from V16 into V17 config struct
 	srvConfig := &serverConfigV17{
 		Logger: &loggers{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "17"
 	srvConfig.Credential = cv16.Credential
@@ -1356,7 +1384,7 @@ func migrateV17ToV18() error {
 	// Copy over fields from V17 into V18 config struct
 	srvConfig := &serverConfigV17{
 		Logger: &loggers{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "18"
 	srvConfig.Credential = cv17.Credential
@@ -1458,7 +1486,7 @@ func migrateV18ToV19() error {
 	// Copy over fields from V18 into V19 config struct
 	srvConfig := &serverConfigV18{
 		Logger: &loggers{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "19"
 	srvConfig.Credential = cv18.Credential
@@ -1564,7 +1592,7 @@ func migrateV19ToV20() error {
 	// Copy over fields from V19 into V20 config struct
 	srvConfig := &serverConfigV20{
 		Logger: &loggers{},
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "20"
 	srvConfig.Credential = cv19.Credential
@@ -1668,7 +1696,7 @@ func migrateV20ToV21() error {
 
 	// Copy over fields from V20 into V21 config struct
 	srvConfig := &serverConfigV21{
-		Notify: &notifier{},
+		Notify: &notifierV3{},
 	}
 	srvConfig.Version = "21"
 	srvConfig.Credential = cv20.Credential
@@ -1772,7 +1800,7 @@ func migrateV21ToV22() error {
 
 	// Copy over fields from V21 into V22 config struct
 	srvConfig := &serverConfigV22{
-		Notify: notifier{},
+		Notify: notifierV3{},
 	}
 	srvConfig.Version = "22"
 	srvConfig.Credential = cv21.Credential
@@ -1876,7 +1904,7 @@ func migrateV22ToV23() error {
 
 	// Copy over fields from V22 into V23 config struct
 	srvConfig := &serverConfigV23{
-		Notify: notifier{},
+		Notify: notifierV3{},
 	}
 	srvConfig.Version = "23"
 	srvConfig.Credential = cv22.Credential
@@ -1989,7 +2017,7 @@ func migrateV23ToV24() error {
 
 	// Copy over fields from V23 into V24 config struct
 	srvConfig := &serverConfigV24{
-		Notify: notifier{},
+		Notify: notifierV3{},
 	}
 	srvConfig.Version = "24"
 	srvConfig.Credential = cv23.Credential
@@ -2102,7 +2130,7 @@ func migrateV24ToV25() error {
 
 	// Copy over fields from V24 into V25 config struct
 	srvConfig := &serverConfigV25{
-		Notify: notifier{},
+		Notify: notifierV3{},
 	}
 	srvConfig.Version = "25"
 	srvConfig.Credential = cv24.Credential
@@ -2220,7 +2248,7 @@ func migrateV25ToV26() error {
 
 	// Copy over fields from V25 into V26 config struct
 	srvConfig := &serverConfigV26{
-		Notify: notifier{},
+		Notify: notifierV3{},
 	}
 	srvConfig.Version = "26"
 	srvConfig.Credential = cv25.Credential
@@ -2355,3 +2383,353 @@ func migrateV26ToV27() error {
 	logger.Info(configMigrateMSGTemplate, configFile, "26", "27")
 	return nil
 }
+
+func migrateV27ToV28() error {
+	configFile := getConfigFile()
+
+	// config V28 is backward compatible with V27, load the old
+	// config file in serverConfigV28 struct and initialize KMSConfig
+
+	srvConfig := &serverConfigV28{}
+	_, err := quick.LoadConfig(configFile, globalEtcdClient, srvConfig)
+	if os.IsNotExist(err) {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+
+	if srvConfig.Version != "27" {
+		return nil
+	}
+
+	srvConfig.Version = "28"
+	srvConfig.KMS = crypto.KMSConfig{}
+	if err = quick.SaveConfig(srvConfig, configFile, globalEtcdClient); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘27’ to ‘28’. %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "27", "28")
+	return nil
+}
+
+// Migrates ${HOME}/.minio/config.json to '<export_path>/.minio.sys/config/config.json'
+func migrateConfigToMinioSys(objAPI ObjectLayer) (err error) {
+	// Construct path to config.json for the given bucket.
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	// Verify if config was already available in .minio.sys in which case, nothing more to be done.
+	if err = checkConfig(context.Background(), objAPI, configFile); err != errConfigNotFound {
+		return err
+	}
+
+	defer func() {
+		// Rename config.json to config.json.deprecated only upon
+		// success of this function.
+		if err == nil {
+			os.Rename(getConfigFile(), getConfigFile()+".deprecated")
+		}
+	}()
+
+	transactionConfigFile := configFile + ".transaction"
+
+	// As object layer's GetObject() and PutObject() take respective lock on minioMetaBucket
+	// and configFile, take a transaction lock to avoid data race between readConfig()
+	// and saveConfig().
+	objLock := globalNSMutex.NewNSLock(minioMetaBucket, transactionConfigFile)
+	if err = objLock.GetLock(globalOperationTimeout); err != nil {
+		return err
+	}
+	defer objLock.Unlock()
+
+	// Verify if backend already has the file (after holding lock)
+	if err = checkConfig(context.Background(), objAPI, configFile); err != errConfigNotFound {
+		return err
+	} // if errConfigNotFound proceed to migrate..
+
+	var config = &serverConfig{}
+	if _, err = Load(getConfigFile(), config); err != nil {
+		if !os.IsNotExist(err) {
+			return err
+		}
+		// Read from deprecate file as well if necessary.
+		if _, err = Load(getConfigFile()+".deprecated", config); err != nil {
+			if !os.IsNotExist(err) {
+				return err
+			}
+			// If all else fails simply initialize the server config.
+			return newSrvConfig(objAPI)
+		}
+
+	}
+	return saveServerConfig(context.Background(), objAPI, config)
+}
+
+// Migrates '.minio.sys/config.json' to v33.
+func migrateMinioSysConfig(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	// Check if the config version is latest, if not migrate.
+	ok, _, err := checkConfigVersion(objAPI, configFile, serverConfigVersion)
+	if err != nil {
+		return err
+	}
+	if ok {
+		return nil
+	}
+
+	// Construct path to config.json for the given bucket.
+	transactionConfigFile := configFile + ".transaction"
+
+	// As object layer's GetObject() and PutObject() take respective lock on minioMetaBucket
+	// and configFile, take a transaction lock to avoid data race between readConfig()
+	// and saveConfig().
+	objLock := globalNSMutex.NewNSLock(minioMetaBucket, transactionConfigFile)
+	if err := objLock.GetLock(globalOperationTimeout); err != nil {
+		return err
+	}
+	defer objLock.Unlock()
+
+	if err := migrateV27ToV28MinioSys(objAPI); err != nil {
+		return err
+	}
+	if err := migrateV28ToV29MinioSys(objAPI); err != nil {
+		return err
+	}
+	if err := migrateV29ToV30MinioSys(objAPI); err != nil {
+		return err
+	}
+	if err := migrateV30ToV31MinioSys(objAPI); err != nil {
+		return err
+	}
+	if err := migrateV31ToV32MinioSys(objAPI); err != nil {
+		return err
+	}
+	return migrateV32ToV33MinioSys(objAPI)
+}
+
+func checkConfigVersion(objAPI ObjectLayer, configFile string, version string) (bool, []byte, error) {
+	data, err := readConfig(context.Background(), objAPI, configFile)
+	if err != nil {
+		return false, nil, err
+	}
+
+	var versionConfig struct {
+		Version string `json:"version"`
+	}
+
+	vcfg := &versionConfig
+	if err = json.Unmarshal(data, vcfg); err != nil {
+		return false, nil, err
+	}
+	return vcfg.Version == version, data, nil
+}
+
+func migrateV27ToV28MinioSys(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+	ok, data, err := checkConfigVersion(objAPI, configFile, "27")
+	if err == errConfigNotFound {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+	if !ok {
+		return nil
+	}
+
+	cfg := &serverConfigV28{}
+	if err = json.Unmarshal(data, cfg); err != nil {
+		return err
+	}
+
+	cfg.Version = "28"
+	cfg.KMS = crypto.KMSConfig{}
+
+	data, err = json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+
+	if err = saveConfig(context.Background(), objAPI, configFile, data); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘27’ to ‘28’. %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "27", "28")
+	return nil
+}
+
+func migrateV28ToV29MinioSys(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	ok, data, err := checkConfigVersion(objAPI, configFile, "28")
+	if err == errConfigNotFound {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+	if !ok {
+		return nil
+	}
+
+	cfg := &serverConfigV29{}
+	if err = json.Unmarshal(data, cfg); err != nil {
+		return err
+	}
+
+	cfg.Version = "29"
+	data, err = json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+
+	if err = saveConfig(context.Background(), objAPI, configFile, data); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘28’ to ‘29’. %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "28", "29")
+	return nil
+}
+
+func migrateV29ToV30MinioSys(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	ok, data, err := checkConfigVersion(objAPI, configFile, "29")
+	if err == errConfigNotFound {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+	if !ok {
+		return nil
+	}
+
+	cfg := &serverConfigV30{}
+	if err = json.Unmarshal(data, cfg); err != nil {
+		return err
+	}
+
+	cfg.Version = "30"
+	// Init compression config.For future migration, Compression config needs to be copied over from previous version.
+	cfg.Compression.Enabled = false
+	cfg.Compression.Extensions = globalCompressExtensions
+	cfg.Compression.MimeTypes = globalCompressMimeTypes
+
+	data, err = json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+
+	if err = saveConfig(context.Background(), objAPI, configFile, data); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘29’ to ‘30’. %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "29", "30")
+	return nil
+}
+
+func migrateV30ToV31MinioSys(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	ok, data, err := checkConfigVersion(objAPI, configFile, "30")
+	if err == errConfigNotFound {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+	if !ok {
+		return nil
+	}
+
+	cfg := &serverConfigV31{}
+	if err = json.Unmarshal(data, cfg); err != nil {
+		return err
+	}
+
+	cfg.Version = "31"
+	cfg.OpenID.JWKS = validator.JWKSArgs{
+		URL: &xnet.URL{},
+	}
+	cfg.Policy.OPA = iampolicy.OpaArgs{
+		URL:       &xnet.URL{},
+		AuthToken: "",
+	}
+
+	data, err = json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+
+	if err = saveConfig(context.Background(), objAPI, configFile, data); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘30’ to ‘31’. %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "30", "31")
+	return nil
+}
+
+func migrateV31ToV32MinioSys(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	ok, data, err := checkConfigVersion(objAPI, configFile, "31")
+	if err == errConfigNotFound {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+	if !ok {
+		return nil
+	}
+
+	cfg := &serverConfigV32{}
+	if err = json.Unmarshal(data, cfg); err != nil {
+		return err
+	}
+
+	cfg.Version = "32"
+	cfg.Notify.NSQ = make(map[string]target.NSQArgs)
+	cfg.Notify.NSQ["1"] = target.NSQArgs{}
+
+	data, err = json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+
+	if err = saveConfig(context.Background(), objAPI, configFile, data); err != nil {
+		return fmt.Errorf("Failed to migrate config from ‘31’ to ‘32’. %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "31", "32")
+	return nil
+}
+
+func migrateV32ToV33MinioSys(objAPI ObjectLayer) error {
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	ok, data, err := checkConfigVersion(objAPI, configFile, "32")
+	if err == errConfigNotFound {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("Unable to load config file. %v", err)
+	}
+	if !ok {
+		return nil
+	}
+
+	cfg := &serverConfigV33{}
+	if err = json.Unmarshal(data, cfg); err != nil {
+		return err
+	}
+
+	cfg.Version = "33"
+
+	data, err = json.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+
+	if err = saveConfig(context.Background(), objAPI, configFile, data); err != nil {
+		return fmt.Errorf("Failed to migrate config from  32  to  33 . %v", err)
+	}
+
+	logger.Info(configMigrateMSGTemplate, configFile, "32", "33")
+	return nil
+}

cmd/config-migrate_test.go

@@ -25,14 +25,25 @@ import (
 
 // Test if config v1 is purged
 func TestServerConfigMigrateV1(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+	objLayer, fsDir, err := prepareFS()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(fsDir)
+	err = newTestConfig(globalMinioDefaultRegion, objLayer)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
-	// remove the root directory after the test ends.
+	rootPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
+	if err != nil {
+		t.Fatal(err)
+	}
 	defer os.RemoveAll(rootPath)
+	globalConfigDir = &ConfigDir{path: rootPath}
 
-	setConfigDir(rootPath)
+	globalObjLayerMutex.Lock()
+	globalObjectAPI = objLayer
+	globalObjLayerMutex.Unlock()
 
 	// Create a V1 config json file and store it
 	configJSON := "{ \"version\":\"1\", \"accessKeyId\":\"abcde\", \"secretAccessKey\":\"abcdefgh\"}"
@@ -45,13 +56,14 @@ func TestServerConfigMigrateV1(t *testing.T) {
 	if err := migrateConfig(); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
+
 	// Check if config v1 is removed from filesystem
 	if _, err := os.Stat(configPath); err == nil || !os.IsNotExist(err) {
 		t.Fatal("Config V1 file is not purged")
 	}
 
 	// Initialize server config and check again if everything is fine
-	if err := loadConfig(); err != nil {
+	if err := loadConfig(objLayer); err != nil {
 		t.Fatalf("Unable to initialize from updated config file %s", err)
 	}
 }
@@ -59,20 +71,13 @@ func TestServerConfigMigrateV1(t *testing.T) {
 // Test if all migrate code returns nil when config file does not
 // exist
 func TestServerConfigMigrateInexistentConfig(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+	rootPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
 	if err != nil {
-		t.Fatalf("Init Test config failed")
+		t.Fatal(err)
 	}
-	// remove the root directory after the test ends.
 	defer os.RemoveAll(rootPath)
 
-	setConfigDir(rootPath)
-	configPath := rootPath + "/" + minioConfigFile
-
-	// Remove config file
-	if err := os.Remove(configPath); err != nil {
-		t.Fatal("Unexpected error: ", err)
-	}
+	globalConfigDir = &ConfigDir{path: rootPath}
 
 	if err := migrateV2ToV3(); err != nil {
 		t.Fatal("migrate v2 to v3 should succeed when no config file is found")
@@ -149,18 +154,27 @@ func TestServerConfigMigrateInexistentConfig(t *testing.T) {
 	if err := migrateV26ToV27(); err != nil {
 		t.Fatal("migrate v26 to v27 should succeed when no config file is found")
 	}
+	if err := migrateV27ToV28(); err != nil {
+		t.Fatal("migrate v27 to v28 should succeed when no config file is found")
+	}
 }
 
-// Test if a config migration from v2 to v27 is successfully done
-func TestServerConfigMigrateV2toV27(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+// Test if a config migration from v2 to v33 is successfully done
+func TestServerConfigMigrateV2toV33(t *testing.T) {
+	rootPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
 	if err != nil {
-		t.Fatalf("Init Test config failed")
+		t.Fatal(err)
 	}
-	// remove the root directory after the test ends.
 	defer os.RemoveAll(rootPath)
 
-	setConfigDir(rootPath)
+	globalConfigDir = &ConfigDir{path: rootPath}
+
+	objLayer, fsDir, err := prepareFS()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(fsDir)
+
 	configPath := rootPath + "/" + minioConfigFile
 
 	// Create a corrupted config file
@@ -186,8 +200,16 @@ func TestServerConfigMigrateV2toV27(t *testing.T) {
 		t.Fatal("Unexpected error: ", err)
 	}
 
+	if err := migrateConfigToMinioSys(objLayer); err != nil {
+		t.Fatal("Unexpected error: ", err)
+	}
+
+	if err := migrateMinioSysConfig(objLayer); err != nil {
+		t.Fatal("Unexpected error: ", err)
+	}
+
 	// Initialize server config and check again if everything is fine
-	if err := loadConfig(); err != nil {
+	if err := loadConfig(objLayer); err != nil {
 		t.Fatalf("Unable to initialize from updated config file %s", err)
 	}
 
@@ -201,6 +223,7 @@ func TestServerConfigMigrateV2toV27(t *testing.T) {
 	if globalServerConfig.Credential.AccessKey != accessKey {
 		t.Fatalf("Access key lost during migration, expected: %v, found:%v", accessKey, globalServerConfig.Credential.AccessKey)
 	}
+
 	if globalServerConfig.Credential.SecretKey != secretKey {
 		t.Fatalf("Secret key lost during migration, expected: %v, found: %v", secretKey, globalServerConfig.Credential.SecretKey)
 	}
@@ -208,14 +231,13 @@ func TestServerConfigMigrateV2toV27(t *testing.T) {
 
 // Test if all migrate code returns error with corrupted config files
 func TestServerConfigMigrateFaultyConfig(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+	rootPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
 	if err != nil {
-		t.Fatalf("Init Test config failed")
+		t.Fatal(err)
 	}
-	// remove the root directory after the test ends.
 	defer os.RemoveAll(rootPath)
 
-	setConfigDir(rootPath)
+	globalConfigDir = &ConfigDir{path: rootPath}
 	configPath := rootPath + "/" + minioConfigFile
 
 	// Create a corrupted config file
@@ -299,18 +321,20 @@ func TestServerConfigMigrateFaultyConfig(t *testing.T) {
 	if err := migrateV26ToV27(); err == nil {
 		t.Fatal("migrateConfigV26ToV27() should fail with a corrupted json")
 	}
+	if err := migrateV27ToV28(); err == nil {
+		t.Fatal("migrateConfigV27ToV28() should fail with a corrupted json")
+	}
 }
 
 // Test if all migrate code returns error with corrupted config files
 func TestServerConfigMigrateCorruptedConfig(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
+	rootPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
 	if err != nil {
-		t.Fatalf("Init Test config failed")
+		t.Fatal(err)
 	}
-	// remove the root directory after the test ends.
 	defer os.RemoveAll(rootPath)
 
-	setConfigDir(rootPath)
+	globalConfigDir = &ConfigDir{path: rootPath}
 	configPath := rootPath + "/" + minioConfigFile
 
 	for i := 3; i <= 17; i++ {

cmd/config-versions.go

@@ -19,8 +19,11 @@ package cmd
 import (
 	"sync"
 
+	"github.com/minio/minio/cmd/crypto"
 	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/event/target"
+	"github.com/minio/minio/pkg/iam/policy"
+	"github.com/minio/minio/pkg/iam/validator"
 	"github.com/minio/minio/pkg/quick"
 )
 
@@ -260,9 +263,6 @@ type serverConfigV7 struct {
 
 	// Notification queue configuration.
 	Notify notifierV1 `json:"notify"`
-
-	// Read Write mutex.
-	rwMutex *sync.RWMutex
 }
 
 // serverConfigV8 server configuration version '8'. Adds NATS notifier
@@ -279,9 +279,6 @@ type serverConfigV8 struct {
 
 	// Notification queue configuration.
 	Notify notifierV1 `json:"notify"`
-
-	// Read Write mutex.
-	rwMutex *sync.RWMutex
 }
 
 // serverConfigV9 server configuration version '9'. Adds PostgreSQL
@@ -298,9 +295,6 @@ type serverConfigV9 struct {
 
 	// Notification queue configuration.
 	Notify notifierV1 `json:"notify"`
-
-	// Read Write mutex.
-	rwMutex *sync.RWMutex
 }
 
 type loggerV7 struct {
@@ -370,7 +364,7 @@ type serverConfigV12 struct {
 	Notify notifierV2 `json:"notify"`
 }
 
-type notifier struct {
+type notifierV3 struct {
 	AMQP          map[string]target.AMQPArgs          `json:"amqp"`
 	Elasticsearch map[string]target.ElasticsearchArgs `json:"elasticsearch"`
 	Kafka         map[string]target.KafkaArgs         `json:"kafka"`
@@ -395,7 +389,7 @@ type serverConfigV13 struct {
 	Logger *loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV14 server configuration version '14' which is like
@@ -412,7 +406,7 @@ type serverConfigV14 struct {
 	Logger *loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV15 server configuration version '15' which is like
@@ -429,7 +423,7 @@ type serverConfigV15 struct {
 	Logger *loggerV7 `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // FileLogger is introduced to workaround the dependency about logrus
@@ -467,7 +461,7 @@ type serverConfigV16 struct {
 	Logger *loggers `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV17 server configuration version '17' which is like
@@ -486,7 +480,7 @@ type serverConfigV17 struct {
 	Logger *loggers `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV18 server configuration version '18' which is like
@@ -505,7 +499,7 @@ type serverConfigV18 struct {
 	Logger *loggers `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV19 server configuration version '19' which is like
@@ -523,7 +517,7 @@ type serverConfigV19 struct {
 	Logger *loggers `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV20 server configuration version '20' which is like
@@ -542,7 +536,7 @@ type serverConfigV20 struct {
 	Logger *loggers `json:"logger"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV21 is just like version '20' without logger field
@@ -557,7 +551,7 @@ type serverConfigV21 struct {
 	Domain     string           `json:"domain"`
 
 	// Notification queue configuration.
-	Notify *notifier `json:"notify"`
+	Notify *notifierV3 `json:"notify"`
 }
 
 // serverConfigV22 is just like version '21' with added support
@@ -578,7 +572,7 @@ type serverConfigV22 struct {
 	StorageClass storageClassConfig `json:"storageclass"`
 
 	// Notification queue configuration.
-	Notify notifier `json:"notify"`
+	Notify notifierV3 `json:"notify"`
 }
 
 // serverConfigV23 is just like version '22' with addition of cache field.
@@ -601,7 +595,7 @@ type serverConfigV23 struct {
 	Cache CacheConfig `json:"cache"`
 
 	// Notification queue configuration.
-	Notify notifier `json:"notify"`
+	Notify notifierV3 `json:"notify"`
 }
 
 // serverConfigV24 is just like version '23', we had to revert
@@ -625,7 +619,7 @@ type serverConfigV24 struct {
 	Cache CacheConfig `json:"cache"`
 
 	// Notification queue configuration.
-	Notify notifier `json:"notify"`
+	Notify notifierV3 `json:"notify"`
 }
 
 // serverConfigV25 is just like version '24', stores additionally
@@ -652,7 +646,7 @@ type serverConfigV25 struct {
 	Cache CacheConfig `json:"cache"`
 
 	// Notification queue configuration.
-	Notify notifier `json:"notify"`
+	Notify notifierV3 `json:"notify"`
 }
 
 // serverConfigV26 is just like version '25', stores additionally
@@ -676,7 +670,7 @@ type serverConfigV26 struct {
 	Cache CacheConfig `json:"cache"`
 
 	// Notification queue configuration.
-	Notify notifier `json:"notify"`
+	Notify notifierV3 `json:"notify"`
 }
 
 type loggerConsole struct {
@@ -717,8 +711,219 @@ type serverConfigV27 struct {
 	Cache CacheConfig `json:"cache"`
 
 	// Notification queue configuration.
-	Notify notifier `json:"notify"`
+	Notify notifierV3 `json:"notify"`
 
 	// Logger configuration
 	Logger loggerConfig `json:"logger"`
 }
+
+// serverConfigV28 is just like version '27', additionally
+// storing KMS config
+//
+// IMPORTANT NOTE: When updating this struct make sure that
+// serverConfig.ConfigDiff() is updated as necessary.
+type serverConfigV28 struct {
+	quick.Config `json:"-"` // ignore interfaces
+
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential auth.Credentials `json:"credential"`
+	Region     string           `json:"region"`
+	Worm       BoolFlag         `json:"worm"`
+
+	// Storage class configuration
+	StorageClass storageClassConfig `json:"storageclass"`
+
+	// Cache configuration
+	Cache CacheConfig `json:"cache"`
+
+	// KMS configuration
+	KMS crypto.KMSConfig `json:"kms"`
+
+	// Notification queue configuration.
+	Notify notifierV3 `json:"notify"`
+
+	// Logger configuration
+	Logger loggerConfig `json:"logger"`
+}
+
+// serverConfigV29 is just like version '28'.
+type serverConfigV29 serverConfigV28
+
+// compressionConfig represents the compression settings.
+type compressionConfig struct {
+	Enabled    bool     `json:"enabled"`
+	Extensions []string `json:"extensions"`
+	MimeTypes  []string `json:"mime-types"`
+}
+
+// serverConfigV30 is just like version '29', stores additionally
+// extensions and mimetypes fields for compression.
+type serverConfigV30 struct {
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential auth.Credentials `json:"credential"`
+	Region     string           `json:"region"`
+	Worm       BoolFlag         `json:"worm"`
+
+	// Storage class configuration
+	StorageClass storageClassConfig `json:"storageclass"`
+
+	// Cache configuration
+	Cache CacheConfig `json:"cache"`
+
+	// KMS configuration
+	KMS crypto.KMSConfig `json:"kms"`
+
+	// Notification queue configuration.
+	Notify notifierV3 `json:"notify"`
+
+	// Logger configuration
+	Logger loggerConfig `json:"logger"`
+
+	// Compression configuration
+	Compression compressionConfig `json:"compress"`
+}
+
+// serverConfigV31 is just like version '30', with OPA and OpenID configuration.
+type serverConfigV31 struct {
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential auth.Credentials `json:"credential"`
+	Region     string           `json:"region"`
+	Worm       BoolFlag         `json:"worm"`
+
+	// Storage class configuration
+	StorageClass storageClassConfig `json:"storageclass"`
+
+	// Cache configuration
+	Cache CacheConfig `json:"cache"`
+
+	// KMS configuration
+	KMS crypto.KMSConfig `json:"kms"`
+
+	// Notification queue configuration.
+	Notify notifierV3 `json:"notify"`
+
+	// Logger configuration
+	Logger loggerConfig `json:"logger"`
+
+	// Compression configuration
+	Compression compressionConfig `json:"compress"`
+
+	// OpenID configuration
+	OpenID struct {
+		// JWKS validator config.
+		JWKS validator.JWKSArgs `json:"jwks"`
+	} `json:"openid"`
+
+	// External policy enforcements.
+	Policy struct {
+		// OPA configuration.
+		OPA iampolicy.OpaArgs `json:"opa"`
+
+		// Add new external policy enforcements here.
+	} `json:"policy"`
+}
+
+type notifier struct {
+	AMQP          map[string]target.AMQPArgs          `json:"amqp"`
+	Elasticsearch map[string]target.ElasticsearchArgs `json:"elasticsearch"`
+	Kafka         map[string]target.KafkaArgs         `json:"kafka"`
+	MQTT          map[string]target.MQTTArgs          `json:"mqtt"`
+	MySQL         map[string]target.MySQLArgs         `json:"mysql"`
+	NATS          map[string]target.NATSArgs          `json:"nats"`
+	NSQ           map[string]target.NSQArgs           `json:"nsq"`
+	PostgreSQL    map[string]target.PostgreSQLArgs    `json:"postgresql"`
+	Redis         map[string]target.RedisArgs         `json:"redis"`
+	Webhook       map[string]target.WebhookArgs       `json:"webhook"`
+}
+
+// serverConfigV32 is just like version '31' with added nsq notifer.
+type serverConfigV32 struct {
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential auth.Credentials `json:"credential"`
+	Region     string           `json:"region"`
+	Worm       BoolFlag         `json:"worm"`
+
+	// Storage class configuration
+	StorageClass storageClassConfig `json:"storageclass"`
+
+	// Cache configuration
+	Cache CacheConfig `json:"cache"`
+
+	// KMS configuration
+	KMS crypto.KMSConfig `json:"kms"`
+
+	// Notification queue configuration.
+	Notify notifier `json:"notify"`
+
+	// Logger configuration
+	Logger loggerConfig `json:"logger"`
+
+	// Compression configuration
+	Compression compressionConfig `json:"compress"`
+
+	// OpenID configuration
+	OpenID struct {
+		// JWKS validator config.
+		JWKS validator.JWKSArgs `json:"jwks"`
+	} `json:"openid"`
+
+	// External policy enforcements.
+	Policy struct {
+		// OPA configuration.
+		OPA iampolicy.OpaArgs `json:"opa"`
+
+		// Add new external policy enforcements here.
+	} `json:"policy"`
+}
+
+// serverConfigV33 is just like version '32', removes clientID from NATS and MQTT, and adds queueDir with MQTT.
+type serverConfigV33 struct {
+	quick.Config `json:"-"` // ignore interfaces
+
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential auth.Credentials `json:"credential"`
+	Region     string           `json:"region"`
+	Worm       BoolFlag         `json:"worm"`
+
+	// Storage class configuration
+	StorageClass storageClassConfig `json:"storageclass"`
+
+	// Cache configuration
+	Cache CacheConfig `json:"cache"`
+
+	// KMS configuration
+	KMS crypto.KMSConfig `json:"kms"`
+
+	// Notification queue configuration.
+	Notify notifier `json:"notify"`
+
+	// Logger configuration
+	Logger loggerConfig `json:"logger"`
+
+	// Compression configuration
+	Compression compressionConfig `json:"compress"`
+
+	// OpenID configuration
+	OpenID struct {
+		// JWKS validator config.
+		JWKS validator.JWKSArgs `json:"jwks"`
+	} `json:"openid"`
+
+	// External policy enforcements.
+	Policy struct {
+		// OPA configuration.
+		OPA iampolicy.OpaArgs `json:"opa"`
+
+		// Add new external policy enforcements here.
+	} `json:"policy"`
+}

cmd/config.go

@@ -0,0 +1,196 @@
+/*
+ * Minio Cloud Storage, (C) 2018 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"path"
+	"runtime"
+	"strings"
+
+	"github.com/minio/minio/cmd/logger"
+	"github.com/minio/minio/pkg/quick"
+)
+
+const (
+	minioConfigPrefix = "config"
+
+	// Minio configuration file.
+	minioConfigFile = "config.json"
+
+	// Minio backup file
+	minioConfigBackupFile = minioConfigFile + ".backup"
+)
+
+func saveServerConfig(ctx context.Context, objAPI ObjectLayer, config *serverConfig) error {
+	if err := quick.CheckData(config); err != nil {
+		return err
+	}
+
+	data, err := json.MarshalIndent(config, "", "\t")
+	if err != nil {
+		return err
+	}
+
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+	if globalEtcdClient != nil {
+		return saveConfigEtcd(ctx, globalEtcdClient, configFile, data)
+	}
+
+	// Create a backup of the current config
+	oldData, err := readConfig(ctx, objAPI, configFile)
+	if err == nil {
+		backupConfigFile := path.Join(minioConfigPrefix, minioConfigBackupFile)
+		if err = saveConfig(ctx, objAPI, backupConfigFile, oldData); err != nil {
+			return err
+		}
+	} else {
+		if err != errConfigNotFound {
+			return err
+		}
+	}
+
+	// Save the new config in the std config path
+	return saveConfig(ctx, objAPI, configFile, data)
+}
+
+func readServerConfig(ctx context.Context, objAPI ObjectLayer) (*serverConfig, error) {
+	var configData []byte
+	var err error
+
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+	if globalEtcdClient != nil {
+		configData, err = readConfigEtcd(ctx, globalEtcdClient, configFile)
+	} else {
+		configData, err = readConfig(ctx, objAPI, configFile)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if runtime.GOOS == "windows" {
+		configData = bytes.Replace(configData, []byte("\r\n"), []byte("\n"), -1)
+	}
+
+	if err = quick.CheckDuplicateKeys(string(configData)); err != nil {
+		return nil, err
+	}
+
+	var config = &serverConfig{}
+	if err = json.Unmarshal(configData, config); err != nil {
+		return nil, err
+	}
+
+	if err = quick.CheckData(config); err != nil {
+		return nil, err
+	}
+
+	return config, nil
+}
+
+// ConfigSys - config system.
+type ConfigSys struct{}
+
+// Load - load config.json.
+func (sys *ConfigSys) Load(objAPI ObjectLayer) error {
+	return sys.Init(objAPI)
+}
+
+// Init - initializes config system from config.json.
+func (sys *ConfigSys) Init(objAPI ObjectLayer) error {
+	if objAPI == nil {
+		return errInvalidArgument
+	}
+
+	doneCh := make(chan struct{})
+	defer close(doneCh)
+
+	// Initializing configuration needs a retry mechanism for
+	// the following reasons:
+	//  - Read quorum is lost just after the initialization
+	//    of the object layer.
+	//  - Write quorum not met when upgrading configuration
+	//    version is needed.
+	for range newRetryTimerSimple(doneCh) {
+		if err := initConfig(objAPI); err != nil {
+			if strings.Contains(err.Error(), InsufficientReadQuorum{}.Error()) ||
+				strings.Contains(err.Error(), InsufficientWriteQuorum{}.Error()) {
+				logger.Info("Waiting for configuration to be initialized..")
+				continue
+			}
+			return err
+		}
+		break
+	}
+	return nil
+}
+
+// NewConfigSys - creates new config system object.
+func NewConfigSys() *ConfigSys {
+	return &ConfigSys{}
+}
+
+// Initialize and load config from remote etcd or local config directory
+func initConfig(objAPI ObjectLayer) error {
+	if objAPI == nil {
+		return errServerNotInitialized
+	}
+
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
+
+	if globalEtcdClient != nil {
+		if err := checkConfigEtcd(context.Background(), globalEtcdClient, getConfigFile()); err != nil {
+			if err == errConfigNotFound {
+				// Migrates all configs at old location.
+				if err = migrateConfig(); err != nil {
+					return err
+				}
+				// Migrates etcd ${HOME}/.minio/config.json to '/config/config.json'
+				if err = migrateConfigToMinioSys(objAPI); err != nil {
+					return err
+				}
+			} else {
+				return err
+			}
+		}
+
+		// Watch config for changes and reloads them.
+		go watchConfigEtcd(objAPI, configFile, loadConfig)
+
+	} else {
+		if isFile(getConfigFile()) {
+			if err := migrateConfig(); err != nil {
+				return err
+			}
+		}
+		// Migrates ${HOME}/.minio/config.json or config.json.deprecated
+		// to '<export_path>/.minio.sys/config/config.json'
+		// ignore if the file doesn't exist.
+		if err := migrateConfigToMinioSys(objAPI); err != nil {
+			return err
+		}
+
+		// Migrates backend '<export_path>/.minio.sys/config/config.json' to latest version.
+		if err := migrateMinioSysConfig(objAPI); err != nil {
+			return err
+		}
+	}
+
+	return loadConfig(objAPI)
+}

cmd/copy-part-range.go

@@ -17,90 +17,53 @@
 package cmd
 
 import (
-	"fmt"
+	"context"
 	"net/http"
 	"net/url"
-	"strconv"
-	"strings"
 )
 
 // Writes S3 compatible copy part range error.
-func writeCopyPartErr(w http.ResponseWriter, err error, url *url.URL) {
+func writeCopyPartErr(ctx context.Context, w http.ResponseWriter, err error, url *url.URL, browser bool) {
 	switch err {
 	case errInvalidRange:
-		writeErrorResponse(w, ErrInvalidCopyPartRange, url)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRange), url, browser)
 		return
 	case errInvalidRangeSource:
-		writeErrorResponse(w, ErrInvalidCopyPartRangeSource, url)
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource), url, browser)
 		return
 	default:
-		writeErrorResponse(w, ErrInternalError, url)
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), url, browser)
 		return
 	}
 }
 
-// Parses x-amz-copy-source-range for CopyObjectPart API. Specifically written to
-// differentiate the behavior between regular httpRange header v/s x-amz-copy-source-range.
-// The range of bytes to copy from the source object. The range value must use the form
-// bytes=first-last, where the first and last are the zero-based byte offsets to copy.
-// For example, bytes=0-9 indicates that you want to copy the first ten bytes of the source.
+// Parses x-amz-copy-source-range for CopyObjectPart API. Its behavior
+// is different from regular HTTP range header. It only supports the
+// form `bytes=first-last` where first and last are zero-based byte
+// offsets. See
 // http://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadUploadPartCopy.html
-func parseCopyPartRange(rangeString string, resourceSize int64) (hrange *httpRange, err error) {
-	// Return error if given range string doesn't start with byte range prefix.
-	if !strings.HasPrefix(rangeString, byteRangePrefix) {
-		return nil, fmt.Errorf("'%s' does not start with '%s'", rangeString, byteRangePrefix)
+// for full details. This function treats an empty rangeString as
+// referring to the whole resource.
+func parseCopyPartRangeSpec(rangeString string) (hrange *HTTPRangeSpec, err error) {
+	hrange, err = parseRequestRangeSpec(rangeString)
+	if err != nil {
+		return nil, err
 	}
-
-	// Trim byte range prefix.
-	byteRangeString := strings.TrimPrefix(rangeString, byteRangePrefix)
-
-	// Check if range string contains delimiter '-', else return error. eg. "bytes=8"
-	sepIndex := strings.Index(byteRangeString, "-")
-	if sepIndex == -1 {
+	if hrange.IsSuffixLength || hrange.Start < 0 || hrange.End < 0 {
 		return nil, errInvalidRange
 	}
-
-	offsetBeginString := byteRangeString[:sepIndex]
-	offsetBegin := int64(-1)
-	// Convert offsetBeginString only if its not empty.
-	if len(offsetBeginString) > 0 {
-		if !validBytePos.MatchString(offsetBeginString) {
-			return nil, errInvalidRange
-		}
-		if offsetBegin, err = strconv.ParseInt(offsetBeginString, 10, 64); err != nil {
-			return nil, errInvalidRange
-		}
-	}
-
-	offsetEndString := byteRangeString[sepIndex+1:]
-	offsetEnd := int64(-1)
-	// Convert offsetEndString only if its not empty.
-	if len(offsetEndString) > 0 {
-		if !validBytePos.MatchString(offsetEndString) {
-			return nil, errInvalidRange
-		}
-		if offsetEnd, err = strconv.ParseInt(offsetEndString, 10, 64); err != nil {
-			return nil, errInvalidRange
-		}
-	}
-
-	// rangeString contains first byte positions. eg. "bytes=2-" or
-	// rangeString contains last bye positions. eg. "bytes=-2"
-	if offsetBegin == -1 || offsetEnd == -1 {
-		return nil, errInvalidRange
-	}
-
-	// Last byte position should not be greater than first byte
-	// position. eg. "bytes=5-2"
-	if offsetBegin > offsetEnd {
-		return nil, errInvalidRange
-	}
-
-	// First and last byte positions should not be >= resourceSize.
-	if offsetBegin >= resourceSize || offsetEnd >= resourceSize {
-		return nil, errInvalidRangeSource
-	}
-
-	// Success..
-	return &httpRange{offsetBegin, offsetEnd, resourceSize}, nil
+	return hrange, nil
+}
+
+// checkCopyPartRangeWithSize adds more check to the range string in case of
+// copy object part. This API requires having specific start and end  range values
+// e.g. 'bytes=3-10'. Other use cases will be rejected.
+func checkCopyPartRangeWithSize(rs *HTTPRangeSpec, resourceSize int64) (err error) {
+	if rs == nil {
+		return nil
+	}
+	if rs.IsSuffixLength || rs.Start >= resourceSize || rs.End >= resourceSize {
+		return errInvalidRangeSource
+	}
+	return nil
 }

cmd/copy-part-range_test.go

@@ -19,35 +19,37 @@ package cmd
 import "testing"
 
 // Test parseCopyPartRange()
-func TestParseCopyPartRange(t *testing.T) {
+func TestParseCopyPartRangeSpec(t *testing.T) {
 	// Test success cases.
 	successCases := []struct {
 		rangeString string
 		offsetBegin int64
 		offsetEnd   int64
-		length      int64
 	}{
-		{"bytes=2-5", 2, 5, 4},
-		{"bytes=2-9", 2, 9, 8},
-		{"bytes=2-2", 2, 2, 1},
-		{"bytes=0000-0006", 0, 6, 7},
+		{"bytes=2-5", 2, 5},
+		{"bytes=2-9", 2, 9},
+		{"bytes=2-2", 2, 2},
+		{"bytes=0000-0006", 0, 6},
 	}
+	objectSize := int64(10)
 
 	for _, successCase := range successCases {
-		hrange, err := parseCopyPartRange(successCase.rangeString, 10)
+		rs, err := parseCopyPartRangeSpec(successCase.rangeString)
 		if err != nil {
 			t.Fatalf("expected: <nil>, got: %s", err)
 		}
 
-		if hrange.offsetBegin != successCase.offsetBegin {
-			t.Fatalf("expected: %d, got: %d", successCase.offsetBegin, hrange.offsetBegin)
+		start, length, err1 := rs.GetOffsetLength(objectSize)
+		if err1 != nil {
+			t.Fatalf("expected: <nil>, got: %s", err1)
 		}
 
-		if hrange.offsetEnd != successCase.offsetEnd {
-			t.Fatalf("expected: %d, got: %d", successCase.offsetEnd, hrange.offsetEnd)
+		if start != successCase.offsetBegin {
+			t.Fatalf("expected: %d, got: %d", successCase.offsetBegin, start)
 		}
-		if hrange.getLength() != successCase.length {
-			t.Fatalf("expected: %d, got: %d", successCase.length, hrange.getLength())
+
+		if start+length-1 != successCase.offsetEnd {
+			t.Fatalf("expected: %d, got: %d", successCase.offsetEnd, start+length-1)
 		}
 	}
 
@@ -59,15 +61,16 @@ func TestParseCopyPartRange(t *testing.T) {
 		"bytes=2-+5",
 		"bytes=2--5",
 		"bytes=-",
-		"",
 		"2-5",
 		"bytes = 2-5",
 		"bytes=2 - 5",
 		"bytes=0-0,-1",
 		"bytes=2-5 ",
+		"bytes=-1",
+		"bytes=1-",
 	}
 	for _, rangeString := range invalidRangeStrings {
-		if _, err := parseCopyPartRange(rangeString, 10); err == nil {
+		if _, err := parseCopyPartRangeSpec(rangeString); err == nil {
 			t.Fatalf("expected: an error, got: <nil> for range %s", rangeString)
 		}
 	}
@@ -78,8 +81,14 @@ func TestParseCopyPartRange(t *testing.T) {
 		"bytes=20-30",
 	}
 	for _, rangeString := range errorRangeString {
-		if _, err := parseCopyPartRange(rangeString, 10); err != errInvalidRangeSource {
-			t.Fatalf("expected: %s, got: %s", errInvalidRangeSource, err)
+		rs, err := parseCopyPartRangeSpec(rangeString)
+		if err == nil {
+			err1 := checkCopyPartRangeWithSize(rs, objectSize)
+			if err1 != errInvalidRangeSource {
+				t.Fatalf("expected: %s, got: %s", errInvalidRangeSource, err)
+			}
+		} else {
+			t.Fatalf("expected: %s, got: <nil>", errInvalidRangeSource)
 		}
 	}
 }

cmd/crypto/config.go

@@ -0,0 +1,21 @@
+// Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 Minio, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package crypto
+
+// KMSConfig has the KMS config for hashicorp vault
+type KMSConfig struct {
+	AutoEncryption bool        `json:"-"`
+	Vault          VaultConfig `json:"vault"`
+}

cmd/crypto/error.go

@@ -43,10 +43,17 @@ var (
 	// base64-encoded string or not 256 bits long.
 	ErrInvalidCustomerKey = errors.New("The SSE-C client key is invalid")
 
+	// ErrSecretKeyMismatch indicates that the provided secret key (SSE-C client key / SSE-S3 KMS key)
+	// does not match the secret key used during encrypting the object.
+	ErrSecretKeyMismatch = errors.New("The secret key does not match the secret key used during upload")
+
 	// ErrCustomerKeyMD5Mismatch indicates that the SSE-C key MD5 does not match the
 	// computed MD5 sum. This means that the client provided either the wrong key for
 	// a certain MD5 checksum or the wrong MD5 for a certain key.
 	ErrCustomerKeyMD5Mismatch = errors.New("The provided SSE-C key MD5 does not match the computed MD5 of the SSE-C key")
+	// ErrIncompatibleEncryptionMethod indicates that both SSE-C headers and SSE-S3 headers were specified, and are incompatible
+	// The client needs to remove the SSE-S3 header or the SSE-C headers
+	ErrIncompatibleEncryptionMethod = errors.New("Server side encryption specified with both SSE-C and SSE-S3 headers")
 )
 
 var (

cmd/crypto/header.go

@@ -19,11 +19,22 @@ import (
 	"crypto/md5"
 	"encoding/base64"
 	"net/http"
+	"strings"
 )
 
 // SSEHeader is the general AWS SSE HTTP header key.
 const SSEHeader = "X-Amz-Server-Side-Encryption"
 
+const (
+	// SSEKmsID is the HTTP header key referencing the SSE-KMS
+	// key ID.
+	SSEKmsID = SSEHeader + "-Aws-Kms-Key-Id"
+
+	// SSEKmsContext is the HTTP header key referencing the
+	// SSE-KMS encryption context.
+	SSEKmsContext = SSEHeader + "-Context"
+)
+
 const (
 	// SSECAlgorithm is the HTTP header key referencing
 	// the SSE-C algorithm.
@@ -52,10 +63,24 @@ const (
 	SSECopyKeyMD5 = "X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5"
 )
 
-// SSEAlgorithmAES256 is the only supported value for the SSE-S3 or SSE-C algorithm header.
-// For SSE-S3 see: https://docs.aws.amazon.com/AmazonS3/latest/dev/SSEUsingRESTAPI.html
-// For SSE-C  see: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
-const SSEAlgorithmAES256 = "AES256"
+const (
+	// SSEAlgorithmAES256 is the only supported value for the SSE-S3 or SSE-C algorithm header.
+	// For SSE-S3 see: https://docs.aws.amazon.com/AmazonS3/latest/dev/SSEUsingRESTAPI.html
+	// For SSE-C  see: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
+	SSEAlgorithmAES256 = "AES256"
+
+	// SSEAlgorithmKMS is the value of 'X-Amz-Server-Side-Encryption' for SSE-KMS.
+	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingKMSEncryption.html
+	SSEAlgorithmKMS = "aws:kms"
+)
+
+// RemoveSensitiveHeaders removes confidential encryption
+// information - e.g. the SSE-C key - from the HTTP headers.
+// It has the same semantics as RemoveSensitiveEntires.
+func RemoveSensitiveHeaders(h http.Header) {
+	h.Del(SSECKey)
+	h.Del(SSECopyKey)
+}
 
 // S3 represents AWS SSE-S3. It provides functionality to handle
 // SSE-S3 requests.
@@ -67,7 +92,7 @@ type s3 struct{}
 // the S3 client requests SSE-S3.
 func (s3) IsRequested(h http.Header) bool {
 	_, ok := h[SSEHeader]
-	return ok
+	return ok && strings.ToLower(h.Get(SSEHeader)) != SSEAlgorithmKMS // Return only true if the SSE header is specified and does not contain the SSE-KMS value
 }
 
 // ParseHTTP parses the SSE-S3 related HTTP headers and checks
@@ -79,6 +104,27 @@ func (s3) ParseHTTP(h http.Header) (err error) {
 	return
 }
 
+// S3KMS represents AWS SSE-KMS. It provides functionality to
+// handle SSE-KMS requests.
+var S3KMS = s3KMS{}
+
+type s3KMS struct{}
+
+// IsRequested returns true if the HTTP headers indicates that
+// the S3 client requests SSE-KMS.
+func (s3KMS) IsRequested(h http.Header) bool {
+	if _, ok := h[SSEKmsID]; ok {
+		return true
+	}
+	if _, ok := h[SSEKmsContext]; ok {
+		return true
+	}
+	if _, ok := h[SSEHeader]; ok {
+		return strings.ToUpper(h.Get(SSEHeader)) != SSEAlgorithmAES256 // Return only true if the SSE header is specified and does not contain the SSE-S3 value
+	}
+	return false
+}
+
 var (
 	// SSEC represents AWS SSE-C. It provides functionality to handle
 	// SSE-C requests.
@@ -126,7 +172,6 @@ func (ssecCopy) IsRequested(h http.Header) bool {
 // ParseHTTP parses the SSE-C headers and returns the SSE-C client key
 // on success. SSE-C copy headers are ignored.
 func (ssec) ParseHTTP(h http.Header) (key [32]byte, err error) {
-	defer h.Del(SSECKey) // remove SSE-C key from headers after parsing
 	if h.Get(SSECAlgorithm) != SSEAlgorithmAES256 {
 		return key, ErrInvalidCustomerAlgorithm
 	}
@@ -152,7 +197,6 @@ func (ssec) ParseHTTP(h http.Header) (key [32]byte, err error) {
 // ParseHTTP parses the SSE-C copy headers and returns the SSE-C client key
 // on success. Regular SSE-C headers are ignored.
 func (ssecCopy) ParseHTTP(h http.Header) (key [32]byte, err error) {
-	defer h.Del(SSECopyKey) // remove SSE-C copy key of source object from headers after parsing
 	if h.Get(SSECopyAlgorithm) != SSEAlgorithmAES256 {
 		return key, ErrInvalidCustomerAlgorithm
 	}

cmd/crypto/header_test.go

@@ -16,17 +16,53 @@ package crypto
 
 import (
 	"net/http"
+	"sort"
 	"testing"
 )
 
+var kmsIsRequestedTests = []struct {
+	Header   http.Header
+	Expected bool
+}{
+	{Header: http.Header{}, Expected: false},                                                                                     // 0
+	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"aws:kms"}}, Expected: true},                                   // 1
+	{Header: http.Header{"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": []string{"0839-9047947-844842874-481"}}, Expected: true}, // 2
+	{Header: http.Header{"X-Amz-Server-Side-Encryption-Context": []string{"7PpPLAK26ONlVUGOWlusfg=="}}, Expected: true},          // 3
+	{
+		Header: http.Header{
+			"X-Amz-Server-Side-Encryption":                []string{""},
+			"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": []string{""},
+			"X-Amz-Server-Side-Encryption-Context":        []string{""},
+		},
+		Expected: true,
+	}, // 4
+	{
+		Header: http.Header{
+			"X-Amz-Server-Side-Encryption":                []string{"AES256"},
+			"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": []string{""},
+		},
+		Expected: true,
+	}, // 5
+	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"AES256"}}, Expected: false}, // 6
+}
+
+func TestKMSIsRequested(t *testing.T) {
+	for i, test := range kmsIsRequestedTests {
+		if got := S3KMS.IsRequested(test.Header); got != test.Expected {
+			t.Errorf("Test %d: Wanted %v but got %v", i, test.Expected, got)
+		}
+	}
+}
+
 var s3IsRequestedTests = []struct {
 	Header   http.Header
 	Expected bool
 }{
-	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"AES256"}}, Expected: true},  // 0
-	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"AES-256"}}, Expected: true}, // 1
-	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{""}}, Expected: true},        // 2
-	{Header: http.Header{"X-Amz-Server-Side-Encryptio": []string{"AES256"}}, Expected: false},  // 3
+	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"AES256"}}, Expected: true},         // 0
+	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"AES-256"}}, Expected: true},        // 1
+	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{""}}, Expected: true},               // 2
+	{Header: http.Header{"X-Amz-Server-Side-Encryptio": []string{"AES256"}}, Expected: false},         // 3
+	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{SSEAlgorithmKMS}}, Expected: false}, // 4
 }
 
 func TestS3IsRequested(t *testing.T) {
@@ -59,7 +95,7 @@ var ssecIsRequestedTests = []struct {
 	Header   http.Header
 	Expected bool
 }{
-	{Header: http.Header{}, Expected: false},                                                                                                     // 0
+	{Header: http.Header{}, Expected: false}, // 0
 	{Header: http.Header{"X-Amz-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"}}, Expected: true},                                 // 1
 	{Header: http.Header{"X-Amz-Server-Side-Encryption-Customer-Key": []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="}}, Expected: true}, // 2
 	{Header: http.Header{"X-Amz-Server-Side-Encryption-Customer-Key-Md5": []string{"7PpPLAK26ONlVUGOWlusfg=="}}, Expected: true},                 // 3
@@ -101,7 +137,7 @@ var ssecCopyIsRequestedTests = []struct {
 	Header   http.Header
 	Expected bool
 }{
-	{Header: http.Header{}, Expected: false},                                                                                                                 // 0
+	{Header: http.Header{}, Expected: false}, // 0
 	{Header: http.Header{"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"}}, Expected: true},                                 // 1
 	{Header: http.Header{"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key": []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="}}, Expected: true}, // 2
 	{Header: http.Header{"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5": []string{"7PpPLAK26ONlVUGOWlusfg=="}}, Expected: true},                 // 3
@@ -215,9 +251,6 @@ func TestSSECParse(t *testing.T) {
 		if err == nil && key == zeroKey {
 			t.Errorf("Test %d: parsed client key is zero key", i)
 		}
-		if _, ok := test.Header[SSECKey]; ok {
-			t.Errorf("Test %d: client key is not removed from HTTP headers after parsing", i)
-		}
 	}
 }
 
@@ -302,3 +335,102 @@ func TestSSECopyParse(t *testing.T) {
 		}
 	}
 }
+
+var removeSensitiveHeadersTests = []struct {
+	Header, ExpectedHeader http.Header
+}{
+	{
+		Header: http.Header{
+			SSECKey:    []string{""},
+			SSECopyKey: []string{""},
+		},
+		ExpectedHeader: http.Header{},
+	},
+	{ // Standard SSE-C request headers
+		Header: http.Header{
+			SSECAlgorithm: []string{SSEAlgorithmAES256},
+			SSECKey:       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			SSECKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		ExpectedHeader: http.Header{
+			SSECAlgorithm: []string{SSEAlgorithmAES256},
+			SSECKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+	},
+	{ // Standard SSE-C + SSE-C-copy request headers
+		Header: http.Header{
+			SSECAlgorithm: []string{SSEAlgorithmAES256},
+			SSECKey:       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			SSECKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+			SSECopyKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			SSECopyKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		ExpectedHeader: http.Header{
+			SSECAlgorithm: []string{SSEAlgorithmAES256},
+			SSECKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+			SSECopyKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+	},
+	{ // Standard SSE-C + metadata request headers
+		Header: http.Header{
+			SSECAlgorithm:       []string{SSEAlgorithmAES256},
+			SSECKey:             []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			SSECKeyMD5:          []string{"7PpPLAK26ONlVUGOWlusfg=="},
+			"X-Amz-Meta-Test-1": []string{"Test-1"},
+		},
+		ExpectedHeader: http.Header{
+			SSECAlgorithm:       []string{SSEAlgorithmAES256},
+			SSECKeyMD5:          []string{"7PpPLAK26ONlVUGOWlusfg=="},
+			"X-Amz-Meta-Test-1": []string{"Test-1"},
+		},
+	},
+}
+
+func TestRemoveSensitiveHeaders(t *testing.T) {
+	isEqual := func(x, y http.Header) bool {
+		if len(x) != len(y) {
+			return false
+		}
+		for k, v := range x {
+			u, ok := y[k]
+			if !ok || len(v) != len(u) {
+				return false
+			}
+			sort.Strings(v)
+			sort.Strings(u)
+			for j := range v {
+				if v[j] != u[j] {
+					return false
+				}
+			}
+		}
+		return true
+	}
+	areKeysEqual := func(h http.Header, metadata map[string]string) bool {
+		if len(h) != len(metadata) {
+			return false
+		}
+		for k := range h {
+			if _, ok := metadata[k]; !ok {
+				return false
+			}
+		}
+		return true
+	}
+
+	for i, test := range removeSensitiveHeadersTests {
+		metadata := make(map[string]string, len(test.Header))
+		for k := range test.Header {
+			metadata[k] = "" // set metadata key - we don't care about the value
+		}
+
+		RemoveSensitiveHeaders(test.Header)
+		if !isEqual(test.ExpectedHeader, test.Header) {
+			t.Errorf("Test %d: filtered headers do not match expected headers - got: %v , want: %v", i, test.Header, test.ExpectedHeader)
+		}
+		RemoveSensitiveEntries(metadata)
+		if !areKeysEqual(test.ExpectedHeader, metadata) {
+			t.Errorf("Test %d: filtered headers do not match expected headers - got: %v , want: %v", i, test.Header, test.ExpectedHeader)
+		}
+	}
+}

cmd/crypto/key.go

@@ -35,8 +35,8 @@ import (
 type ObjectKey [32]byte
 
 // GenerateKey generates a unique ObjectKey from a 256 bit external key
-// and a source of randomness. If random is nil the default PRNG of system
-// (crypto/rand) is used.
+// and a source of randomness. If random is nil the default PRNG of the
+// system (crypto/rand) is used.
 func GenerateKey(extKey [32]byte, random io.Reader) (key ObjectKey) {
 	if random == nil {
 		random = rand.Reader
@@ -52,6 +52,19 @@ func GenerateKey(extKey [32]byte, random io.Reader) (key ObjectKey) {
 	return key
 }
 
+// GenerateIV generates a new random 256 bit IV from the provided source
+// of randomness. If random is nil the default PRNG of the system
+// (crypto/rand) is used.
+func GenerateIV(random io.Reader) (iv [32]byte) {
+	if random == nil {
+		random = rand.Reader
+	}
+	if _, err := io.ReadFull(random, iv[:]); err != nil {
+		logger.CriticalIf(context.Background(), errOutOfEntropy)
+	}
+	return iv
+}
+
 // SealedKey represents a sealed object key. It can be stored
 // at an untrusted location.
 type SealedKey struct {
@@ -74,7 +87,6 @@ func (key ObjectKey) Seal(extKey, iv [32]byte, domain, bucket, object string) Se
 	mac.Write([]byte(SealAlgorithm))
 	mac.Write([]byte(path.Join(bucket, object))) // use path.Join for canonical 'bucket/object'
 	mac.Sum(sealingKey[:0])
-
 	if n, err := sio.Encrypt(&encryptedKey, bytes.NewReader(key[:]), sio.Config{Key: sealingKey[:]}); n != 64 || err != nil {
 		logger.CriticalIf(context.Background(), errors.New("Unable to generate sealed key"))
 	}
@@ -112,7 +124,7 @@ func (key *ObjectKey) Unseal(extKey [32]byte, sealedKey SealedKey, domain, bucke
 	}
 
 	if n, err := sio.Decrypt(&decryptedKey, bytes.NewReader(sealedKey.Key[:]), unsealConfig); n != 32 || err != nil {
-		return err // TODO(aead): upgrade sio to use sio.Error
+		return ErrSecretKeyMismatch
 	}
 	copy(key[:], decryptedKey.Bytes())
 	return nil
@@ -128,3 +140,37 @@ func (key ObjectKey) DerivePartKey(id uint32) (partKey [32]byte) {
 	mac.Sum(partKey[:0])
 	return partKey
 }
+
+// SealETag seals the etag using the object key.
+// It does not encrypt empty ETags because such ETags indicate
+// that the S3 client hasn't sent an ETag = MD5(object) and
+// the backend can pick an ETag value.
+func (key ObjectKey) SealETag(etag []byte) []byte {
+	if len(etag) == 0 { // don't encrypt empty ETag - only if client sent ETag = MD5(object)
+		return etag
+	}
+	var buffer bytes.Buffer
+	mac := hmac.New(sha256.New, key[:])
+	mac.Write([]byte("SSE-etag"))
+	if _, err := sio.Encrypt(&buffer, bytes.NewReader(etag), sio.Config{Key: mac.Sum(nil)}); err != nil {
+		logger.CriticalIf(context.Background(), errors.New("Unable to encrypt ETag using object key"))
+	}
+	return buffer.Bytes()
+}
+
+// UnsealETag unseals the etag using the provided object key.
+// It does not try to decrypt the ETag if len(etag) == 16
+// because such ETags indicate that the S3 client hasn't sent
+// an ETag = MD5(object) and the backend has picked an ETag value.
+func (key ObjectKey) UnsealETag(etag []byte) ([]byte, error) {
+	if !IsETagSealed(etag) {
+		return etag, nil
+	}
+	var buffer bytes.Buffer
+	mac := hmac.New(sha256.New, key[:])
+	mac.Write([]byte("SSE-etag"))
+	if _, err := sio.Decrypt(&buffer, bytes.NewReader(etag), sio.Config{Key: mac.Sum(nil)}); err != nil {
+		return nil, err
+	}
+	return buffer.Bytes(), nil
+}

cmd/crypto/key_test.go

@@ -61,6 +61,32 @@ func TestGenerateKey(t *testing.T) {
 	}
 }
 
+var generateIVTests = []struct {
+	Random     io.Reader
+	ShouldPass bool
+}{
+	{Random: nil, ShouldPass: true},              // 0
+	{Random: rand.Reader, ShouldPass: true},      // 1
+	{Random: shortRandom(32), ShouldPass: true},  // 2
+	{Random: shortRandom(31), ShouldPass: false}, // 3
+}
+
+func TestGenerateIV(t *testing.T) {
+	defer func(disableLog bool) { logger.Disable = disableLog }(logger.Disable)
+	logger.Disable = true
+
+	for i, test := range generateIVTests {
+		i, test := i, test
+		func() {
+			defer recoverTest(i, test.ShouldPass, t)
+			iv := GenerateIV(test.Random)
+			if iv == [32]byte{} {
+				t.Errorf("Test %d: generated IV is zero IV", i) // check that we generate random and unique IV
+			}
+		}()
+	}
+}
+
 var sealUnsealKeyTests = []struct {
 	SealExtKey, SealIV                 [32]byte
 	SealDomain, SealBucket, SealObject string
@@ -140,3 +166,31 @@ func TestDerivePartKey(t *testing.T) {
 		}
 	}
 }
+
+var sealUnsealETagTests = []string{
+	"",
+	"90682b8e8cc7609c",
+	"90682b8e8cc7609c4671e1d64c73fc30",
+	"90682b8e8cc7609c4671e1d64c73fc307fb3104f",
+}
+
+func TestSealETag(t *testing.T) {
+	var key ObjectKey
+	for i := range key {
+		key[i] = byte(i)
+	}
+	for i, etag := range sealUnsealETagTests {
+		tag, err := hex.DecodeString(etag)
+		if err != nil {
+			t.Errorf("Test %d: failed to decode etag: %s", i, err)
+		}
+		sealedETag := key.SealETag(tag)
+		unsealedETag, err := key.UnsealETag(sealedETag)
+		if err != nil {
+			t.Errorf("Test %d: failed to decrypt etag: %s", i, err)
+		}
+		if !bytes.Equal(unsealedETag, tag) {
+			t.Errorf("Test %d: unsealed etag does not match: got %s - want %s", i, hex.EncodeToString(unsealedETag), etag)
+		}
+	}
+}

cmd/crypto/metadata.go

@@ -32,6 +32,34 @@ func IsMultiPart(metadata map[string]string) bool {
 	return false
 }
 
+// RemoveSensitiveEntries removes confidential encryption
+// information - e.g. the SSE-C key - from the metadata map.
+// It has the same semantics as RemoveSensitiveHeaders.
+func RemoveSensitiveEntries(metadata map[string]string) { // The functions is tested in TestRemoveSensitiveHeaders for compatibility reasons
+	delete(metadata, SSECKey)
+	delete(metadata, SSECopyKey)
+}
+
+// RemoveSSEHeaders removes all crypto-specific SSE
+// header entries from the metadata map.
+func RemoveSSEHeaders(metadata map[string]string) {
+	delete(metadata, SSEHeader)
+	delete(metadata, SSECKeyMD5)
+	delete(metadata, SSECAlgorithm)
+}
+
+// RemoveInternalEntries removes all crypto-specific internal
+// metadata entries from the metadata map.
+func RemoveInternalEntries(metadata map[string]string) {
+	delete(metadata, SSEMultipart)
+	delete(metadata, SSEIV)
+	delete(metadata, SSESealAlgorithm)
+	delete(metadata, SSECSealedKey)
+	delete(metadata, S3SealedKey)
+	delete(metadata, S3KMSKeyID)
+	delete(metadata, S3KMSSealedKey)
+}
+
 // IsEncrypted returns true if the object metadata indicates
 // that it was uploaded using some form of server-side-encryption.
 //
@@ -211,3 +239,6 @@ func (ssec) ParseMetadata(metadata map[string]string) (sealedKey SealedKey, err
 	copy(sealedKey.Key[:], encryptedKey)
 	return sealedKey, nil
 }
+
+// IsETagSealed returns true if the etag seems to be encrypted.
+func IsETagSealed(etag []byte) bool { return len(etag) > 16 }

cmd/crypto/metadata_test.go

@@ -17,6 +17,7 @@ package crypto
 import (
 	"bytes"
 	"encoding/base64"
+	"encoding/hex"
 	"testing"
 
 	"github.com/minio/minio/cmd/logger"
@@ -326,15 +327,20 @@ func TestS3CreateMetadata(t *testing.T) {
 	_ = S3.CreateMetadata(nil, "", []byte{}, SealedKey{Algorithm: InsecureSealAlgorithm})
 }
 
-var ssecCreateMetadataTests = []SealedKey{
-	{Algorithm: SealAlgorithm},
-	{IV: [32]byte{0xff}, Key: [64]byte{0x7e}, Algorithm: SealAlgorithm},
+var ssecCreateMetadataTests = []struct {
+	KeyID         string
+	SealedDataKey []byte
+	SealedKey     SealedKey
+}{
+	{KeyID: "", SealedDataKey: make([]byte, 48), SealedKey: SealedKey{Algorithm: SealAlgorithm}},
+	{KeyID: "cafebabe", SealedDataKey: make([]byte, 48), SealedKey: SealedKey{Algorithm: SealAlgorithm}},
+	{KeyID: "deadbeef", SealedDataKey: make([]byte, 32), SealedKey: SealedKey{IV: [32]byte{0xf7}, Key: [64]byte{0xea}, Algorithm: SealAlgorithm}},
 }
 
 func TestSSECCreateMetadata(t *testing.T) {
 	defer func(disableLog bool) { logger.Disable = disableLog }(logger.Disable)
 	logger.Disable = true
-	for i, test := range s3CreateMetadataTests {
+	for i, test := range ssecCreateMetadataTests {
 		metadata := SSEC.CreateMetadata(nil, test.SealedKey)
 		sealedKey, err := SSEC.ParseMetadata(metadata)
 		if err != nil {
@@ -359,3 +365,75 @@ func TestSSECCreateMetadata(t *testing.T) {
 	}()
 	_ = SSEC.CreateMetadata(nil, SealedKey{Algorithm: InsecureSealAlgorithm})
 }
+
+var isETagSealedTests = []struct {
+	ETag     string
+	IsSealed bool
+}{
+	{ETag: "", IsSealed: false},                                  // 0
+	{ETag: "90682b8e8cc7609c4671e1d64c73fc30", IsSealed: false},  // 1
+	{ETag: "f201040c9dc593e39ea004dc1323699bcd", IsSealed: true}, // 2 not valid ciphertext but looks like sealed ETag
+	{ETag: "20000f00fba2ee2ae4845f725964eeb9e092edfabc7ab9f9239e8344341f769a51ce99b4801b0699b92b16a72fa94972", IsSealed: true}, // 3
+}
+
+func TestIsETagSealed(t *testing.T) {
+	for i, test := range isETagSealedTests {
+		etag, err := hex.DecodeString(test.ETag)
+		if err != nil {
+			t.Errorf("Test %d: failed to decode etag: %s", i, err)
+		}
+		if sealed := IsETagSealed(etag); sealed != test.IsSealed {
+			t.Errorf("Test %d: got %v - want %v", i, sealed, test.IsSealed)
+		}
+	}
+}
+
+var removeInternalEntriesTests = []struct {
+	Metadata, Expected map[string]string
+}{
+	{ // 0
+		Metadata: map[string]string{
+			SSEMultipart:     "",
+			SSEIV:            "",
+			SSESealAlgorithm: "",
+			SSECSealedKey:    "",
+			S3SealedKey:      "",
+			S3KMSKeyID:       "",
+			S3KMSSealedKey:   "",
+		},
+		Expected: map[string]string{},
+	},
+	{ // 1
+		Metadata: map[string]string{
+			SSEMultipart:         "",
+			SSEIV:                "",
+			"X-Amz-Meta-A":       "X",
+			"X-Minio-Internal-B": "Y",
+		},
+		Expected: map[string]string{
+			"X-Amz-Meta-A":       "X",
+			"X-Minio-Internal-B": "Y",
+		},
+	},
+}
+
+func TestRemoveInternalEntries(t *testing.T) {
+	isEqual := func(x, y map[string]string) bool {
+		if len(x) != len(y) {
+			return false
+		}
+		for k, v := range x {
+			if u, ok := y[k]; !ok || v != u {
+				return false
+			}
+		}
+		return true
+	}
+
+	for i, test := range removeInternalEntriesTests {
+		RemoveInternalEntries(test.Metadata)
+		if !isEqual(test.Metadata, test.Expected) {
+			t.Errorf("Test %d: got %v - want %v", i, test.Metadata, test.Expected)
+		}
+	}
+}

cmd/crypto/sse.go

@@ -18,6 +18,8 @@ import (
 	"context"
 	"errors"
 	"io"
+	"net/http"
+	"path"
 
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/ioutil"
@@ -65,6 +67,63 @@ const (
 	InsecureSealAlgorithm = "DARE-SHA256"
 )
 
+// String returns the SSE domain as string. For SSE-S3 the
+// domain is "SSE-S3".
+func (s3) String() string { return "SSE-S3" }
+
+// UnsealObjectKey extracts and decrypts the sealed object key
+// from the metadata using KMS and returns the decrypted object
+// key.
+func (sse s3) UnsealObjectKey(kms KMS, metadata map[string]string, bucket, object string) (key ObjectKey, err error) {
+	keyID, kmsKey, sealedKey, err := sse.ParseMetadata(metadata)
+	if err != nil {
+		return
+	}
+	unsealKey, err := kms.UnsealKey(keyID, kmsKey, Context{bucket: path.Join(bucket, object)})
+	if err != nil {
+		return
+	}
+	err = key.Unseal(unsealKey, sealedKey, sse.String(), bucket, object)
+	return
+}
+
+// String returns the SSE domain as string. For SSE-C the
+// domain is "SSE-C".
+func (ssec) String() string { return "SSE-C" }
+
+// UnsealObjectKey extracts and decrypts the sealed object key
+// from the metadata using the SSE-C client key of the HTTP headers
+// and returns the decrypted object key.
+func (sse ssec) UnsealObjectKey(h http.Header, metadata map[string]string, bucket, object string) (key ObjectKey, err error) {
+	clientKey, err := sse.ParseHTTP(h)
+	if err != nil {
+		return
+	}
+	return unsealObjectKey(clientKey, metadata, bucket, object)
+}
+
+// UnsealObjectKey extracts and decrypts the sealed object key
+// from the metadata using the SSE-Copy client key of the HTTP headers
+// and returns the decrypted object key.
+func (sse ssecCopy) UnsealObjectKey(h http.Header, metadata map[string]string, bucket, object string) (key ObjectKey, err error) {
+	clientKey, err := sse.ParseHTTP(h)
+	if err != nil {
+		return
+	}
+	return unsealObjectKey(clientKey, metadata, bucket, object)
+}
+
+// unsealObjectKey decrypts and returns the sealed object key
+// from the metadata using the SSE-C client key.
+func unsealObjectKey(clientKey [32]byte, metadata map[string]string, bucket, object string) (key ObjectKey, err error) {
+	sealedKey, err := SSEC.ParseMetadata(metadata)
+	if err != nil {
+		return
+	}
+	err = key.Unseal(clientKey, sealedKey, SSEC.String(), bucket, object)
+	return
+}
+
 // EncryptSinglePart encrypts an io.Reader which must be the
 // the body of a single-part PUT request.
 func EncryptSinglePart(r io.Reader, key ObjectKey) io.Reader {

cmd/crypto/sse_test.go

@@ -0,0 +1,226 @@
+// Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 Minio, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package crypto
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestS3String(t *testing.T) {
+	const Domain = "SSE-S3"
+	if domain := S3.String(); domain != Domain {
+		t.Errorf("S3's string method returns wrong domain: got '%s' - want '%s'", domain, Domain)
+	}
+}
+
+func TestSSECString(t *testing.T) {
+	const Domain = "SSE-C"
+	if domain := SSEC.String(); domain != Domain {
+		t.Errorf("SSEC's string method returns wrong domain: got '%s' - want '%s'", domain, Domain)
+	}
+}
+
+var ssecUnsealObjectKeyTests = []struct {
+	Headers        http.Header
+	Bucket, Object string
+	Metadata       map[string]string
+
+	ExpectedErr error
+}{
+	{ // 0 - Valid HTTP headers and valid metadata entries for bucket/object
+		Headers: http.Header{
+			"X-Amz-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			"X-Amz-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key":     "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm": "DAREv2-HMAC-SHA256",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":             "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: nil,
+	},
+	{ // 1 - Valid HTTP headers but invalid metadata entries for bucket/object2
+		Headers: http.Header{
+			"X-Amz-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			"X-Amz-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		Bucket: "bucket",
+		Object: "object2",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key":     "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm": "DAREv2-HMAC-SHA256",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":             "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: ErrSecretKeyMismatch,
+	},
+	{ // 2 - Valid HTTP headers but invalid metadata entries for bucket/object
+		Headers: http.Header{
+			"X-Amz-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			"X-Amz-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key": "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":         "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: errMissingInternalSealAlgorithm,
+	},
+	{ // 3 - Invalid HTTP headers for valid metadata entries for bucket/object
+		Headers: http.Header{
+			"X-Amz-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+		},
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key":     "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm": "DAREv2-HMAC-SHA256",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":             "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: ErrMissingCustomerKeyMD5,
+	},
+}
+
+func TestSSECUnsealObjectKey(t *testing.T) {
+	for i, test := range ssecUnsealObjectKeyTests {
+		if _, err := SSEC.UnsealObjectKey(test.Headers, test.Metadata, test.Bucket, test.Object); err != test.ExpectedErr {
+			t.Errorf("Test %d: got: %v - want: %v", i, err, test.ExpectedErr)
+		}
+	}
+}
+
+var sseCopyUnsealObjectKeyTests = []struct {
+	Headers        http.Header
+	Bucket, Object string
+	Metadata       map[string]string
+
+	ExpectedErr error
+}{
+	{ // 0 - Valid HTTP headers and valid metadata entries for bucket/object
+		Headers: http.Header{
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key":     "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm": "DAREv2-HMAC-SHA256",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":             "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: nil,
+	},
+	{ // 1 - Valid HTTP headers but invalid metadata entries for bucket/object2
+		Headers: http.Header{
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		Bucket: "bucket",
+		Object: "object2",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key":     "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm": "DAREv2-HMAC-SHA256",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":             "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: ErrSecretKeyMismatch,
+	},
+	{ // 2 - Valid HTTP headers but invalid metadata entries for bucket/object
+		Headers: http.Header{
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key": "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":         "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: errMissingInternalSealAlgorithm,
+	},
+	{ // 3 - Invalid HTTP headers for valid metadata entries for bucket/object
+		Headers: http.Header{
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm": []string{"AES256"},
+			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+		},
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Sealed-Key":     "IAAfAMBdYor5tf/UlVaQvwYlw5yKbPBeQqfygqsfHqhu1wHD9KDAP4bw38AhL12prFTS23JbbR9Re5Qv26ZnlQ==",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm": "DAREv2-HMAC-SHA256",
+			"X-Minio-Internal-Server-Side-Encryption-Iv":             "coVfGS3I/CTrqexX5vUN+PQPoP9aUFiPYYrSzqTWfBA=",
+		},
+		ExpectedErr: ErrMissingCustomerKeyMD5,
+	},
+}
+
+func TestSSECopyUnsealObjectKey(t *testing.T) {
+	for i, test := range sseCopyUnsealObjectKeyTests {
+		if _, err := SSECopy.UnsealObjectKey(test.Headers, test.Metadata, test.Bucket, test.Object); err != test.ExpectedErr {
+			t.Errorf("Test %d: got: %v - want: %v", i, err, test.ExpectedErr)
+		}
+	}
+}
+
+var s3UnsealObjectKeyTests = []struct {
+	KMS            KMS
+	Bucket, Object string
+	Metadata       map[string]string
+
+	ExpectedErr error
+}{
+	{ // 0 - Valid KMS key-ID and valid metadata entries for bucket/object
+		KMS:    NewKMS([32]byte{}),
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Iv":                "hhVY0LKR1YtZbzAKxTWUfZt5enDfYX6Fxz1ma8Kiudc=",
+			"X-Minio-Internal-Server-Side-Encryption-S3-Sealed-Key":     "IAAfALhsOeD5AE3s5Zgq3DZ5VFGsOa3B0ksVC86veDcaj+fXv2U0VadhPaOKYr9Emd5ssOsO0uIhIIrKiOy9rA==",
+			"X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key": "IAAfAMRS2iw45FsfiF3QXajSYVWj1lxMpQm6DxDGPtADCX6fJQQ4atHBtfpgqJFyeQmIHsm0FBI+UlHw1Lv4ug==",
+			"X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id":     "test-key-1",
+			"X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm":    "DAREv2-HMAC-SHA256",
+		},
+		ExpectedErr: nil,
+	},
+	{ // 1 - Valid KMS key-ID for invalid metadata entries for bucket/object
+		KMS:    NewKMS([32]byte{}),
+		Bucket: "bucket",
+		Object: "object",
+		Metadata: map[string]string{
+			"X-Minio-Internal-Server-Side-Encryption-Iv":                "hhVY0LKR1YtZbzAKxTWUfZt5enDfYX6Fxz1ma8Kiudc=",
+			"X-Minio-Internal-Server-Side-Encryption-S3-Sealed-Key":     "IAAfALhsOeD5AE3s5Zgq3DZ5VFGsOa3B0ksVC86veDcaj+fXv2U0VadhPaOKYr9Emd5ssOsO0uIhIIrKiOy9rA==",
+			"X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key": "IAAfAMRS2iw45FsfiF3QXajSYVWj1lxMpQm6DxDGPtADCX6fJQQ4atHBtfpgqJFyeQmIHsm0FBI+UlHw1Lv4ug==",
+			"X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id":     "test-key-1",
+		},
+		ExpectedErr: errMissingInternalSealAlgorithm,
+	},
+}
+
+func TestS3UnsealObjectKey(t *testing.T) {
+	for i, test := range s3UnsealObjectKeyTests {
+		if _, err := S3.UnsealObjectKey(test.KMS, test.Metadata, test.Bucket, test.Object); err != test.ExpectedErr {
+			t.Errorf("Test %d: got: %v - want: %v", i, err, test.ExpectedErr)
+		}
+	}
+}

cmd/crypto/vault.go

@@ -0,0 +1,252 @@
+// Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 Minio, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package crypto
+
+import (
+	"bytes"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	vault "github.com/hashicorp/vault/api"
+)
+
+var (
+	//ErrKMSAuthLogin is raised when there is a failure authenticating to KMS
+	ErrKMSAuthLogin = errors.New("Vault service did not return auth info")
+)
+
+// VaultKey represents vault encryption key-ring.
+type VaultKey struct {
+	Name    string `json:"name"`    // The name of the encryption key-ring
+	Version int    `json:"version"` // The key version
+}
+
+// VaultAuth represents vault authentication type.
+// Currently the only supported authentication type is AppRole.
+type VaultAuth struct {
+	Type    string       `json:"type"`    // The authentication type
+	AppRole VaultAppRole `json:"approle"` // The AppRole authentication credentials
+}
+
+// VaultAppRole represents vault AppRole authentication credentials
+type VaultAppRole struct {
+	ID     string `json:"id"`     // The AppRole access ID
+	Secret string `json:"secret"` // The AppRole secret
+}
+
+// VaultConfig represents vault configuration.
+type VaultConfig struct {
+	Endpoint  string    `json:"endpoint"` // The vault API endpoint as URL
+	CAPath    string    `json:"-"`        // The path to PEM-encoded certificate files used for mTLS. Currently not used in config file.
+	Auth      VaultAuth `json:"auth"`     // The vault authentication configuration
+	Key       VaultKey  `json:"key-id"`   // The named key used for key-generation / decryption.
+	Namespace string    `json:"-"`        // The vault namespace of enterprise vault instances
+}
+
+// vaultService represents a connection to a vault KMS.
+type vaultService struct {
+	config        *VaultConfig
+	client        *vault.Client
+	secret        *vault.Secret
+	leaseDuration time.Duration
+}
+
+var _ KMS = (*vaultService)(nil) // compiler check that *vaultService implements KMS
+
+// empty/default vault configuration used to check whether a particular is empty.
+var emptyVaultConfig = VaultConfig{}
+
+// IsEmpty returns true if the vault config struct is an
+// empty configuration.
+func (v *VaultConfig) IsEmpty() bool { return *v == emptyVaultConfig }
+
+// Verify returns a nil error if the vault configuration
+// is valid. A valid configuration is either empty or
+// contains valid non-default values.
+func (v *VaultConfig) Verify() (err error) {
+	if v.IsEmpty() {
+		return // an empty configuration is valid
+	}
+	switch {
+	case v.Endpoint == "":
+		err = errors.New("crypto: missing hashicorp vault endpoint")
+	case strings.ToLower(v.Auth.Type) != "approle":
+		err = fmt.Errorf("crypto: invalid hashicorp vault authentication type: %s is not supported", v.Auth.Type)
+	case v.Auth.AppRole.ID == "":
+		err = errors.New("crypto: missing hashicorp vault AppRole ID")
+	case v.Auth.AppRole.Secret == "":
+		err = errors.New("crypto: missing hashicorp vault AppSecret ID")
+	case v.Key.Name == "":
+		err = errors.New("crypto: missing hashicorp vault key name")
+	case v.Key.Version < 0:
+		err = errors.New("crypto: invalid hashicorp vault key version: The key version must not be negative")
+	}
+	return
+}
+
+// NewVault initializes Hashicorp Vault KMS by authenticating
+// to Vault with the credentials in config and gets a client
+// token for future api calls.
+func NewVault(config VaultConfig) (KMS, error) {
+	if config.IsEmpty() {
+		return nil, errors.New("crypto: the hashicorp vault configuration must not be empty")
+	}
+	if err := config.Verify(); err != nil {
+		return nil, err
+	}
+
+	vaultCfg := vault.Config{Address: config.Endpoint}
+	if err := vaultCfg.ConfigureTLS(&vault.TLSConfig{CAPath: config.CAPath}); err != nil {
+		return nil, err
+	}
+	client, err := vault.NewClient(&vaultCfg)
+	if err != nil {
+		return nil, err
+	}
+	if config.Namespace != "" {
+		client.SetNamespace(config.Namespace)
+	}
+	v := &vaultService{client: client, config: &config}
+	if err := v.authenticate(); err != nil {
+		return nil, err
+	}
+	v.renewToken()
+	return v, nil
+}
+
+// renewToken starts a new go-routine which renews
+// the vault authentication token periodically and re-authenticates
+// if the token renewal fails
+func (v *vaultService) renewToken() {
+	retryDelay := v.leaseDuration / 2
+	go func() {
+		for {
+			if v.secret == nil {
+				if err := v.authenticate(); err != nil {
+					time.Sleep(retryDelay)
+					continue
+				}
+			}
+			s, err := v.client.Auth().Token().RenewSelf(int(v.leaseDuration))
+			if err != nil || s == nil {
+				v.secret = nil
+				time.Sleep(retryDelay)
+				continue
+			}
+			if ok, err := s.TokenIsRenewable(); !ok || err != nil {
+				v.secret = nil
+				continue
+			}
+			ttl, err := s.TokenTTL()
+			if err != nil {
+				v.secret = nil
+				continue
+			}
+			v.secret = s
+			retryDelay = ttl / 2
+			time.Sleep(retryDelay)
+		}
+	}()
+}
+
+// authenticate logs the app to vault, and starts the auto renewer
+// before secret expires
+func (v *vaultService) authenticate() (err error) {
+	payload := map[string]interface{}{
+		"role_id":   v.config.Auth.AppRole.ID,
+		"secret_id": v.config.Auth.AppRole.Secret,
+	}
+	var tokenID string
+	var ttl time.Duration
+	var secret *vault.Secret
+	secret, err = v.client.Logical().Write("auth/approle/login", payload)
+	if err != nil {
+		return
+	}
+	if secret == nil {
+		err = ErrKMSAuthLogin
+		return
+	}
+
+	tokenID, err = secret.TokenID()
+	if err != nil {
+		err = ErrKMSAuthLogin
+		return
+	}
+	ttl, err = secret.TokenTTL()
+	if err != nil {
+		err = ErrKMSAuthLogin
+		return
+	}
+	v.client.SetToken(tokenID)
+	v.secret = secret
+	v.leaseDuration = ttl
+	return
+}
+
+// GenerateKey returns a new plaintext key, generated by the KMS,
+// and a sealed version of this plaintext key encrypted using the
+// named key referenced by keyID. It also binds the generated key
+// cryptographically to the provided context.
+func (v *vaultService) GenerateKey(keyID string, ctx Context) (key [32]byte, sealedKey []byte, err error) {
+	var contextStream bytes.Buffer
+	ctx.WriteTo(&contextStream)
+
+	payload := map[string]interface{}{
+		"context": base64.StdEncoding.EncodeToString(contextStream.Bytes()),
+	}
+	s, err := v.client.Logical().Write(fmt.Sprintf("/transit/datakey/plaintext/%s", keyID), payload)
+	if err != nil {
+		return key, sealedKey, err
+	}
+	sealKey := s.Data["ciphertext"].(string)
+	plainKey, err := base64.StdEncoding.DecodeString(s.Data["plaintext"].(string))
+	if err != nil {
+		return key, sealedKey, err
+	}
+	copy(key[:], []byte(plainKey))
+	return key, []byte(sealKey), nil
+}
+
+// UnsealKey returns the decrypted sealedKey as plaintext key.
+// Therefore it sends the sealedKey to the KMS which decrypts
+// it using the named key referenced by keyID and responses with
+// the plaintext key.
+//
+// The context must be same context as the one provided while
+// generating the plaintext key / sealedKey.
+func (v *vaultService) UnsealKey(keyID string, sealedKey []byte, ctx Context) (key [32]byte, err error) {
+	var contextStream bytes.Buffer
+	ctx.WriteTo(&contextStream)
+
+	payload := map[string]interface{}{
+		"ciphertext": string(sealedKey),
+		"context":    base64.StdEncoding.EncodeToString(contextStream.Bytes()),
+	}
+	s, err := v.client.Logical().Write(fmt.Sprintf("/transit/decrypt/%s", keyID), payload)
+	if err != nil {
+		return key, err
+	}
+	base64Key := s.Data["plaintext"].(string)
+	plainKey, err := base64.StdEncoding.DecodeString(base64Key)
+	if err != nil {
+		return key, err
+	}
+	copy(key[:], []byte(plainKey))
+	return key, nil
+}

cmd/disk-cache-fs.go

@@ -30,7 +30,6 @@ import (
 
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/disk"
-	"github.com/minio/minio/pkg/hash"
 	"github.com/minio/minio/pkg/lock"
 )
 
@@ -92,7 +91,7 @@ func newCacheFSObjects(dir string, expiry int, maxDiskUsagePct int) (*cacheFSObj
 		appendFileMap: make(map[string]*fsAppendFile),
 	}
 
-	go fsObjects.cleanupStaleMultipartUploads(context.Background(), globalMultipartCleanupInterval, globalMultipartExpiry, globalServiceDoneCh)
+	go fsObjects.cleanupStaleMultipartUploads(context.Background(), GlobalMultipartCleanupInterval, GlobalMultipartExpiry, GlobalServiceDoneCh)
 
 	cacheFS := cacheFSObjects{
 		FSObjects:       fsObjects,
@@ -159,7 +158,7 @@ func (cfs *cacheFSObjects) purgeTrash() {
 
 	for {
 		select {
-		case <-globalServiceDoneCh:
+		case <-GlobalServiceDoneCh:
 			return
 		case <-ticker.C:
 			trashPath := path.Join(cfs.fsPath, minioMetaBucket, cacheTrashDir)
@@ -258,7 +257,7 @@ func (cfs *cacheFSObjects) IsOnline() bool {
 }
 
 // Caches the object to disk
-func (cfs *cacheFSObjects) Put(ctx context.Context, bucket, object string, data *hash.Reader, metadata map[string]string) error {
+func (cfs *cacheFSObjects) Put(ctx context.Context, bucket, object string, data *PutObjReader, opts ObjectOptions) error {
 	if cfs.diskUsageHigh() {
 		select {
 		case cfs.purgeChan <- struct{}{}:
@@ -275,7 +274,7 @@ func (cfs *cacheFSObjects) Put(ctx context.Context, bucket, object string, data
 			return pErr
 		}
 	}
-	_, err := cfs.PutObject(ctx, bucket, object, data, metadata)
+	_, err := cfs.PutObject(ctx, bucket, object, data, opts)
 	// if err is due to disk being offline , mark cache drive as offline
 	if IsErr(err, baseErrs...) {
 		cfs.setOnline(false)
@@ -284,8 +283,8 @@ func (cfs *cacheFSObjects) Put(ctx context.Context, bucket, object string, data
 }
 
 // Returns the handle for the cached object
-func (cfs *cacheFSObjects) Get(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string) (err error) {
-	return cfs.GetObject(ctx, bucket, object, startOffset, length, writer, etag)
+func (cfs *cacheFSObjects) Get(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error) {
+	return cfs.GetObject(ctx, bucket, object, startOffset, length, writer, etag, opts)
 }
 
 // Deletes the cached object
@@ -295,13 +294,14 @@ func (cfs *cacheFSObjects) Delete(ctx context.Context, bucket, object string) (e
 
 // convenience function to check if object is cached on this cacheFSObjects
 func (cfs *cacheFSObjects) Exists(ctx context.Context, bucket, object string) bool {
-	_, err := cfs.GetObjectInfo(ctx, bucket, object)
+	_, err := cfs.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
 	return err == nil
 }
 
 // Identical to fs PutObject operation except that it uses ETag in metadata
 // headers.
-func (cfs *cacheFSObjects) PutObject(ctx context.Context, bucket string, object string, data *hash.Reader, metadata map[string]string) (objInfo ObjectInfo, retErr error) {
+func (cfs *cacheFSObjects) PutObject(ctx context.Context, bucket string, object string, r *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, retErr error) {
+	data := r.Reader
 	fs := cfs.FSObjects
 	// Lock the object.
 	objectLock := fs.nsMutex.NewNSLock(bucket, object)
@@ -312,7 +312,7 @@ func (cfs *cacheFSObjects) PutObject(ctx context.Context, bucket string, object
 
 	// No metadata is set, allocate a new one.
 	meta := make(map[string]string)
-	for k, v := range metadata {
+	for k, v := range opts.UserDefined {
 		meta[k] = v
 	}
 
@@ -354,7 +354,7 @@ func (cfs *cacheFSObjects) PutObject(ctx context.Context, bucket string, object
 	}
 
 	// Validate input data size and it can never be less than zero.
-	if data.Size() < 0 {
+	if data.Size() < -1 {
 		logger.LogIf(ctx, errInvalidArgument)
 		return ObjectInfo{}, errInvalidArgument
 	}
@@ -438,7 +438,7 @@ func (cfs *cacheFSObjects) PutObject(ctx context.Context, bucket string, object
 // Implements S3 compatible initiate multipart API. Operation here is identical
 // to fs backend implementation - with the exception that cache FS uses the uploadID
 // generated on the backend
-func (cfs *cacheFSObjects) NewMultipartUpload(ctx context.Context, bucket, object string, meta map[string]string, uploadID string) (string, error) {
+func (cfs *cacheFSObjects) NewMultipartUpload(ctx context.Context, bucket, object string, uploadID string, opts ObjectOptions) (string, error) {
 	if cfs.diskUsageHigh() {
 		select {
 		case cfs.purgeChan <- struct{}{}:
@@ -472,7 +472,7 @@ func (cfs *cacheFSObjects) NewMultipartUpload(ctx context.Context, bucket, objec
 
 	// Initialize fs.json values.
 	fsMeta := newFSMetaV1()
-	fsMeta.Meta = meta
+	fsMeta.Meta = opts.UserDefined
 
 	fsMetaBytes, err := json.Marshal(fsMeta)
 	if err != nil {

cmd/disk-cache.go

@@ -31,14 +31,14 @@ import (
 
 	"github.com/djherbis/atime"
 
+	"github.com/minio/minio/cmd/crypto"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/hash"
 	"github.com/minio/minio/pkg/wildcard"
 )
 
 const (
-	// disk cache needs to have cacheSizeMultiplier * object size space free for a cache entry to be created.
-	cacheSizeMultiplier  = 100
+	// disk cache needs to have  object size space free for a cache entry to be created.
 	cacheTrashDir        = "trash"
 	cacheCleanupInterval = 10 // in minutes
 )
@@ -57,18 +57,19 @@ type cacheObjects struct {
 	// file path patterns to exclude from cache
 	exclude []string
 	// Object functions pointing to the corresponding functions of backend implementation.
-	GetObjectFn               func(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string) (err error)
-	GetObjectInfoFn           func(ctx context.Context, bucket, object string) (objInfo ObjectInfo, err error)
-	PutObjectFn               func(ctx context.Context, bucket, object string, data *hash.Reader, metadata map[string]string) (objInfo ObjectInfo, err error)
+	GetObjectNInfoFn          func(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error)
+	GetObjectFn               func(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error)
+	GetObjectInfoFn           func(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error)
+	PutObjectFn               func(ctx context.Context, bucket, object string, data *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error)
 	DeleteObjectFn            func(ctx context.Context, bucket, object string) error
 	ListObjectsFn             func(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (result ListObjectsInfo, err error)
 	ListObjectsV2Fn           func(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (result ListObjectsV2Info, err error)
 	ListBucketsFn             func(ctx context.Context) (buckets []BucketInfo, err error)
 	GetBucketInfoFn           func(ctx context.Context, bucket string) (bucketInfo BucketInfo, err error)
-	NewMultipartUploadFn      func(ctx context.Context, bucket, object string, metadata map[string]string) (uploadID string, err error)
-	PutObjectPartFn           func(ctx context.Context, bucket, object, uploadID string, partID int, data *hash.Reader) (info PartInfo, err error)
+	NewMultipartUploadFn      func(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error)
+	PutObjectPartFn           func(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error)
 	AbortMultipartUploadFn    func(ctx context.Context, bucket, object, uploadID string) error
-	CompleteMultipartUploadFn func(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart) (objInfo ObjectInfo, err error)
+	CompleteMultipartUploadFn func(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error)
 	DeleteBucketFn            func(ctx context.Context, bucket string) error
 }
 
@@ -88,21 +89,27 @@ type CacheObjectLayer interface {
 	ListBuckets(ctx context.Context) (buckets []BucketInfo, err error)
 	DeleteBucket(ctx context.Context, bucket string) error
 	// Object operations.
-	GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string) (err error)
-	GetObjectInfo(ctx context.Context, bucket, object string) (objInfo ObjectInfo, err error)
-	PutObject(ctx context.Context, bucket, object string, data *hash.Reader, metadata map[string]string) (objInfo ObjectInfo, err error)
+	GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error)
+	GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error)
+	GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error)
+	PutObject(ctx context.Context, bucket, object string, data *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error)
 	DeleteObject(ctx context.Context, bucket, object string) error
 
 	// Multipart operations.
-	NewMultipartUpload(ctx context.Context, bucket, object string, metadata map[string]string) (uploadID string, err error)
-	PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *hash.Reader) (info PartInfo, err error)
+	NewMultipartUpload(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error)
+	PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error)
 	AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string) error
-	CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart) (objInfo ObjectInfo, err error)
+	CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error)
 
 	// Storage operations.
 	StorageInfo(ctx context.Context) CacheStorageInfo
 }
 
+// IsCacheable returns if the object should be saved in the cache.
+func (o ObjectInfo) IsCacheable() bool {
+	return !crypto.IsEncrypted(o.UserDefined)
+}
+
 // backendDownError returns true if err is due to backend failure or faulty disk if in server mode
 func backendDownError(err error) bool {
 	_, backendDown := err.(BackendDown)
@@ -175,22 +182,98 @@ func (c cacheObjects) getMetadata(objInfo ObjectInfo) map[string]string {
 	return metadata
 }
 
+func (c cacheObjects) GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error) {
+	if c.isCacheExclude(bucket, object) {
+		return c.GetObjectNInfoFn(ctx, bucket, object, rs, h, writeLock, opts)
+	}
+
+	// fetch cacheFSObjects if object is currently cached or nearest available cache drive
+	dcache, err := c.cache.getCachedFSLoc(ctx, bucket, object)
+	if err != nil {
+		return c.GetObjectNInfoFn(ctx, bucket, object, rs, h, writeLock, opts)
+	}
+
+	cacheReader, cacheErr := dcache.GetObjectNInfo(ctx, bucket, object, rs, h, lockType, opts)
+
+	objInfo, err := c.GetObjectInfoFn(ctx, bucket, object, opts)
+	if backendDownError(err) && cacheErr == nil {
+		return cacheReader, nil
+	} else if err != nil {
+		if _, ok := err.(ObjectNotFound); ok {
+			// Delete cached entry if backend object was deleted.
+			dcache.Delete(ctx, bucket, object)
+		}
+		return nil, err
+	}
+
+	if !objInfo.IsCacheable() || filterFromCache(objInfo.UserDefined) {
+		return c.GetObjectNInfoFn(ctx, bucket, object, rs, h, writeLock, opts)
+	}
+
+	if cacheErr == nil {
+		if cacheReader.ObjInfo.ETag == objInfo.ETag && !isStaleCache(objInfo) {
+			// Object is not stale, so serve from cache
+			return cacheReader, nil
+		}
+		cacheReader.Close()
+		// Object is stale, so delete from cache
+		dcache.Delete(ctx, bucket, object)
+	}
+
+	// Since we got here, we are serving the request from backend,
+	// and also adding the object to the cache.
+
+	if rs != nil {
+		// We don't cache partial objects.
+		return c.GetObjectNInfoFn(ctx, bucket, object, rs, h, writeLock, opts)
+	}
+	if !dcache.diskAvailable(objInfo.Size) {
+		return c.GetObjectNInfoFn(ctx, bucket, object, rs, h, writeLock, opts)
+	}
+
+	bkReader, bkErr := c.GetObjectNInfoFn(ctx, bucket, object, rs, h, writeLock, opts)
+	if bkErr != nil {
+		return nil, bkErr
+	}
+
+	// Initialize pipe.
+	pipeReader, pipeWriter := io.Pipe()
+	teeReader := io.TeeReader(bkReader, pipeWriter)
+	hashReader, herr := hash.NewReader(pipeReader, bkReader.ObjInfo.Size, "", "", bkReader.ObjInfo.Size)
+	if herr != nil {
+		bkReader.Close()
+		return nil, herr
+	}
+
+	go func() {
+		putErr := dcache.Put(ctx, bucket, object, NewPutObjReader(hashReader, nil, nil), ObjectOptions{UserDefined: c.getMetadata(bkReader.ObjInfo)})
+		// close the write end of the pipe, so the error gets
+		// propagated to getObjReader
+		pipeWriter.CloseWithError(putErr)
+	}()
+
+	cleanupBackend := func() { bkReader.Close() }
+	cleanupPipe := func() { pipeReader.Close() }
+	gr = NewGetObjectReaderFromReader(teeReader, bkReader.ObjInfo, cleanupBackend, cleanupPipe)
+	return gr, nil
+}
+
 // Uses cached-object to serve the request. If object is not cached it serves the request from the backend and also
 // stores it in the cache for serving subsequent requests.
-func (c cacheObjects) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string) (err error) {
+func (c cacheObjects) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error) {
 	GetObjectFn := c.GetObjectFn
 	GetObjectInfoFn := c.GetObjectInfoFn
 
 	if c.isCacheExclude(bucket, object) {
-		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag)
+		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag, opts)
 	}
 	// fetch cacheFSObjects if object is currently cached or nearest available cache drive
 	dcache, err := c.cache.getCachedFSLoc(ctx, bucket, object)
 	if err != nil {
-		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag)
+		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag, opts)
 	}
 	// stat object on backend
-	objInfo, err := GetObjectInfoFn(ctx, bucket, object)
+	objInfo, err := GetObjectInfoFn(ctx, bucket, object, opts)
 	backendDown := backendDownError(err)
 	if err != nil && !backendDown {
 		if _, ok := err.(ObjectNotFound); ok {
@@ -200,43 +283,45 @@ func (c cacheObjects) GetObject(ctx context.Context, bucket, object string, star
 		return err
 	}
 
-	if !backendDown && filterFromCache(objInfo.UserDefined) {
-		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag)
+	if !backendDown && !objInfo.IsCacheable() {
+		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag, opts)
 	}
 
-	cachedObjInfo, err := dcache.GetObjectInfo(ctx, bucket, object)
+	if !backendDown && filterFromCache(objInfo.UserDefined) {
+		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag, opts)
+	}
+
+	cachedObjInfo, err := dcache.GetObjectInfo(ctx, bucket, object, opts)
 	if err == nil {
 		if backendDown {
 			// If the backend is down, serve the request from cache.
-			return dcache.Get(ctx, bucket, object, startOffset, length, writer, etag)
+			return dcache.Get(ctx, bucket, object, startOffset, length, writer, etag, opts)
 		}
 		if cachedObjInfo.ETag == objInfo.ETag && !isStaleCache(objInfo) {
-			return dcache.Get(ctx, bucket, object, startOffset, length, writer, etag)
+			return dcache.Get(ctx, bucket, object, startOffset, length, writer, etag, opts)
 		}
 		dcache.Delete(ctx, bucket, object)
 	}
-	if startOffset != 0 || length != objInfo.Size {
+	if startOffset != 0 || (length > 0 && length != objInfo.Size) {
 		// We don't cache partial objects.
-		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag)
+		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag, opts)
 	}
-	if !dcache.diskAvailable(objInfo.Size * cacheSizeMultiplier) {
-		// cache only objects < 1/100th of disk capacity
-		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag)
+	if !dcache.diskAvailable(objInfo.Size) {
+		return GetObjectFn(ctx, bucket, object, startOffset, length, writer, etag, opts)
 	}
 	// Initialize pipe.
 	pipeReader, pipeWriter := io.Pipe()
-	hashReader, err := hash.NewReader(pipeReader, objInfo.Size, "", "")
+	hashReader, err := hash.NewReader(pipeReader, objInfo.Size, "", "", objInfo.Size)
 	if err != nil {
 		return err
 	}
 	go func() {
-		if err = GetObjectFn(ctx, bucket, object, 0, objInfo.Size, io.MultiWriter(writer, pipeWriter), etag); err != nil {
-			pipeWriter.CloseWithError(err)
-			return
-		}
-		pipeWriter.Close() // Close writer explicitly signaling we wrote all data.
+		gerr := GetObjectFn(ctx, bucket, object, 0, objInfo.Size, io.MultiWriter(writer, pipeWriter), etag, opts)
+		pipeWriter.CloseWithError(gerr) // Close writer explicitly signaling we wrote all data.
 	}()
-	err = dcache.Put(ctx, bucket, object, hashReader, c.getMetadata(objInfo))
+
+	opts.UserDefined = c.getMetadata(objInfo)
+	err = dcache.Put(ctx, bucket, object, NewPutObjReader(hashReader, nil, nil), opts)
 	if err != nil {
 		return err
 	}
@@ -245,17 +330,17 @@ func (c cacheObjects) GetObject(ctx context.Context, bucket, object string, star
 }
 
 // Returns ObjectInfo from cache if available.
-func (c cacheObjects) GetObjectInfo(ctx context.Context, bucket, object string) (ObjectInfo, error) {
+func (c cacheObjects) GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) {
 	getObjectInfoFn := c.GetObjectInfoFn
 	if c.isCacheExclude(bucket, object) {
-		return getObjectInfoFn(ctx, bucket, object)
+		return getObjectInfoFn(ctx, bucket, object, opts)
 	}
 	// fetch cacheFSObjects if object is currently cached or nearest available cache drive
 	dcache, err := c.cache.getCachedFSLoc(ctx, bucket, object)
 	if err != nil {
-		return getObjectInfoFn(ctx, bucket, object)
+		return getObjectInfoFn(ctx, bucket, object, opts)
 	}
-	objInfo, err := getObjectInfoFn(ctx, bucket, object)
+	objInfo, err := getObjectInfoFn(ctx, bucket, object, opts)
 	if err != nil {
 		if _, ok := err.(ObjectNotFound); ok {
 			// Delete the cached entry if backend object was deleted.
@@ -266,14 +351,14 @@ func (c cacheObjects) GetObjectInfo(ctx context.Context, bucket, object string)
 			return ObjectInfo{}, err
 		}
 		// when backend is down, serve from cache.
-		cachedObjInfo, cerr := dcache.GetObjectInfo(ctx, bucket, object)
+		cachedObjInfo, cerr := dcache.GetObjectInfo(ctx, bucket, object, opts)
 		if cerr == nil {
 			return cachedObjInfo, nil
 		}
 		return ObjectInfo{}, BackendDown{}
 	}
 	// when backend is up, do a sanity check on cached object
-	cachedObjInfo, err := dcache.GetObjectInfo(ctx, bucket, object)
+	cachedObjInfo, err := dcache.GetObjectInfo(ctx, bucket, object, opts)
 	if err != nil {
 		return objInfo, nil
 	}
@@ -560,42 +645,43 @@ func (c cacheObjects) isCacheExclude(bucket, object string) bool {
 }
 
 // PutObject - caches the uploaded object for single Put operations
-func (c cacheObjects) PutObject(ctx context.Context, bucket, object string, r *hash.Reader, metadata map[string]string) (objInfo ObjectInfo, err error) {
+func (c cacheObjects) PutObject(ctx context.Context, bucket, object string, r *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	putObjectFn := c.PutObjectFn
+	data := r.Reader
 	dcache, err := c.cache.getCacheFS(ctx, bucket, object)
 	if err != nil {
 		// disk cache could not be located,execute backend call.
-		return putObjectFn(ctx, bucket, object, r, metadata)
+		return putObjectFn(ctx, bucket, object, r, opts)
 	}
 	size := r.Size()
 
 	// fetch from backend if there is no space on cache drive
-	if !dcache.diskAvailable(size * cacheSizeMultiplier) {
-		return putObjectFn(ctx, bucket, object, r, metadata)
+	if !dcache.diskAvailable(size) {
+		return putObjectFn(ctx, bucket, object, r, opts)
 	}
 	// fetch from backend if cache exclude pattern or cache-control
 	// directive set to exclude
-	if c.isCacheExclude(bucket, object) || filterFromCache(metadata) {
+	if c.isCacheExclude(bucket, object) || filterFromCache(opts.UserDefined) {
 		dcache.Delete(ctx, bucket, object)
-		return putObjectFn(ctx, bucket, object, r, metadata)
+		return putObjectFn(ctx, bucket, object, r, opts)
 	}
 	objInfo = ObjectInfo{}
 	// Initialize pipe to stream data to backend
 	pipeReader, pipeWriter := io.Pipe()
-	hashReader, err := hash.NewReader(pipeReader, size, r.MD5HexString(), r.SHA256HexString())
+	hashReader, err := hash.NewReader(pipeReader, size, data.MD5HexString(), data.SHA256HexString(), data.ActualSize())
 	if err != nil {
 		return ObjectInfo{}, err
 	}
 	// Initialize pipe to stream data to cache
 	rPipe, wPipe := io.Pipe()
-	cHashReader, err := hash.NewReader(rPipe, size, r.MD5HexString(), r.SHA256HexString())
+	cHashReader, err := hash.NewReader(rPipe, size, data.MD5HexString(), data.SHA256HexString(), data.ActualSize())
 	if err != nil {
 		return ObjectInfo{}, err
 	}
 	oinfoCh := make(chan ObjectInfo)
 	errCh := make(chan error)
 	go func() {
-		oinfo, perr := putObjectFn(ctx, bucket, object, hashReader, metadata)
+		oinfo, perr := putObjectFn(ctx, bucket, object, NewPutObjReader(hashReader, nil, nil), opts)
 		if perr != nil {
 			pipeWriter.CloseWithError(perr)
 			wPipe.CloseWithError(perr)
@@ -608,14 +694,14 @@ func (c cacheObjects) PutObject(ctx context.Context, bucket, object string, r *h
 	}()
 
 	go func() {
-		if err = dcache.Put(ctx, bucket, object, cHashReader, metadata); err != nil {
+		if err = dcache.Put(ctx, bucket, object, NewPutObjReader(cHashReader, nil, nil), opts); err != nil {
 			wPipe.CloseWithError(err)
 			return
 		}
 	}()
 
 	mwriter := io.MultiWriter(pipeWriter, wPipe)
-	_, err = io.Copy(mwriter, r)
+	_, err = io.Copy(mwriter, data)
 	if err != nil {
 		err = <-errCh
 		return objInfo, err
@@ -627,68 +713,69 @@ func (c cacheObjects) PutObject(ctx context.Context, bucket, object string, r *h
 }
 
 // NewMultipartUpload - Starts a new multipart upload operation to backend and cache.
-func (c cacheObjects) NewMultipartUpload(ctx context.Context, bucket, object string, metadata map[string]string) (uploadID string, err error) {
+func (c cacheObjects) NewMultipartUpload(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error) {
 	newMultipartUploadFn := c.NewMultipartUploadFn
 
-	if c.isCacheExclude(bucket, object) || filterFromCache(metadata) {
-		return newMultipartUploadFn(ctx, bucket, object, metadata)
+	if c.isCacheExclude(bucket, object) || filterFromCache(opts.UserDefined) {
+		return newMultipartUploadFn(ctx, bucket, object, opts)
 	}
 
 	dcache, err := c.cache.getCacheFS(ctx, bucket, object)
 	if err != nil {
 		// disk cache could not be located,execute backend call.
-		return newMultipartUploadFn(ctx, bucket, object, metadata)
+		return newMultipartUploadFn(ctx, bucket, object, opts)
 	}
 
-	uploadID, err = newMultipartUploadFn(ctx, bucket, object, metadata)
+	uploadID, err = newMultipartUploadFn(ctx, bucket, object, opts)
 	if err != nil {
 		return
 	}
 	// create new multipart upload in cache with same uploadID
-	dcache.NewMultipartUpload(ctx, bucket, object, metadata, uploadID)
+	dcache.NewMultipartUpload(ctx, bucket, object, uploadID, opts)
 	return uploadID, err
 }
 
 // PutObjectPart - uploads part to backend and cache simultaneously.
-func (c cacheObjects) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *hash.Reader) (info PartInfo, err error) {
+func (c cacheObjects) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, r *PutObjReader, opts ObjectOptions) (info PartInfo, err error) {
+	data := r.Reader
 	putObjectPartFn := c.PutObjectPartFn
 	dcache, err := c.cache.getCacheFS(ctx, bucket, object)
 	if err != nil {
 		// disk cache could not be located,execute backend call.
-		return putObjectPartFn(ctx, bucket, object, uploadID, partID, data)
+		return putObjectPartFn(ctx, bucket, object, uploadID, partID, r, opts)
 	}
 
 	if c.isCacheExclude(bucket, object) {
-		return putObjectPartFn(ctx, bucket, object, uploadID, partID, data)
+		return putObjectPartFn(ctx, bucket, object, uploadID, partID, r, opts)
 	}
 
-	// make sure cache has at least cacheSizeMultiplier * size available
+	// make sure cache has at least size space available
 	size := data.Size()
-	if !dcache.diskAvailable(size * cacheSizeMultiplier) {
+	if !dcache.diskAvailable(size) {
 		select {
 		case dcache.purgeChan <- struct{}{}:
 		default:
 		}
-		return putObjectPartFn(ctx, bucket, object, uploadID, partID, data)
+		return putObjectPartFn(ctx, bucket, object, uploadID, partID, r, opts)
 	}
 
 	info = PartInfo{}
 	// Initialize pipe to stream data to backend
 	pipeReader, pipeWriter := io.Pipe()
-	hashReader, err := hash.NewReader(pipeReader, size, data.MD5HexString(), data.SHA256HexString())
+	hashReader, err := hash.NewReader(pipeReader, size, data.MD5HexString(), data.SHA256HexString(), data.ActualSize())
 	if err != nil {
 		return
 	}
 	// Initialize pipe to stream data to cache
 	rPipe, wPipe := io.Pipe()
-	cHashReader, err := hash.NewReader(rPipe, size, data.MD5HexString(), data.SHA256HexString())
+	cHashReader, err := hash.NewReader(rPipe, size, data.MD5HexString(), data.SHA256HexString(), data.ActualSize())
 	if err != nil {
 		return
 	}
 	pinfoCh := make(chan PartInfo)
 	errorCh := make(chan error)
 	go func() {
-		info, err = putObjectPartFn(ctx, bucket, object, uploadID, partID, hashReader)
+		info, err = putObjectPartFn(ctx, bucket, object, uploadID, partID, NewPutObjReader(hashReader, nil, nil), opts)
 		if err != nil {
 			close(pinfoCh)
 			pipeWriter.CloseWithError(err)
@@ -700,7 +787,7 @@ func (c cacheObjects) PutObjectPart(ctx context.Context, bucket, object, uploadI
 		pinfoCh <- info
 	}()
 	go func() {
-		if _, perr := dcache.PutObjectPart(ctx, bucket, object, uploadID, partID, cHashReader); perr != nil {
+		if _, perr := dcache.PutObjectPart(ctx, bucket, object, uploadID, partID, NewPutObjReader(cHashReader, nil, nil), opts); perr != nil {
 			wPipe.CloseWithError(perr)
 			return
 		}
@@ -742,25 +829,25 @@ func (c cacheObjects) AbortMultipartUpload(ctx context.Context, bucket, object,
 }
 
 // CompleteMultipartUpload - completes multipart upload operation on backend and cache.
-func (c cacheObjects) CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart) (objInfo ObjectInfo, err error) {
+func (c cacheObjects) CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	completeMultipartUploadFn := c.CompleteMultipartUploadFn
 
 	if c.isCacheExclude(bucket, object) {
-		return completeMultipartUploadFn(ctx, bucket, object, uploadID, uploadedParts)
+		return completeMultipartUploadFn(ctx, bucket, object, uploadID, uploadedParts, opts)
 	}
 
 	dcache, err := c.cache.getCacheFS(ctx, bucket, object)
 	if err != nil {
 		// disk cache could not be located,execute backend call.
-		return completeMultipartUploadFn(ctx, bucket, object, uploadID, uploadedParts)
+		return completeMultipartUploadFn(ctx, bucket, object, uploadID, uploadedParts, opts)
 	}
 	// perform backend operation
-	objInfo, err = completeMultipartUploadFn(ctx, bucket, object, uploadID, uploadedParts)
+	objInfo, err = completeMultipartUploadFn(ctx, bucket, object, uploadID, uploadedParts, opts)
 	if err != nil {
 		return
 	}
 	// create new multipart upload in cache with same uploadID
-	dcache.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts)
+	dcache.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, opts)
 	return
 }
 
@@ -876,14 +963,17 @@ func newServerCacheObjects(config CacheConfig) (CacheObjectLayer, error) {
 		cache:    dcache,
 		exclude:  config.Exclude,
 		listPool: newTreeWalkPool(globalLookupTimeout),
-		GetObjectFn: func(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string) error {
-			return newObjectLayerFn().GetObject(ctx, bucket, object, startOffset, length, writer, etag)
+		GetObjectFn: func(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) error {
+			return newObjectLayerFn().GetObject(ctx, bucket, object, startOffset, length, writer, etag, opts)
 		},
-		GetObjectInfoFn: func(ctx context.Context, bucket, object string) (ObjectInfo, error) {
-			return newObjectLayerFn().GetObjectInfo(ctx, bucket, object)
+		GetObjectInfoFn: func(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) {
+			return newObjectLayerFn().GetObjectInfo(ctx, bucket, object, opts)
 		},
-		PutObjectFn: func(ctx context.Context, bucket, object string, data *hash.Reader, metadata map[string]string) (objInfo ObjectInfo, err error) {
-			return newObjectLayerFn().PutObject(ctx, bucket, object, data, metadata)
+		GetObjectNInfoFn: func(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error) {
+			return newObjectLayerFn().GetObjectNInfo(ctx, bucket, object, rs, h, lockType, opts)
+		},
+		PutObjectFn: func(ctx context.Context, bucket, object string, data *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error) {
+			return newObjectLayerFn().PutObject(ctx, bucket, object, data, opts)
 		},
 		DeleteObjectFn: func(ctx context.Context, bucket, object string) error {
 			return newObjectLayerFn().DeleteObject(ctx, bucket, object)
@@ -900,17 +990,17 @@ func newServerCacheObjects(config CacheConfig) (CacheObjectLayer, error) {
 		GetBucketInfoFn: func(ctx context.Context, bucket string) (bucketInfo BucketInfo, err error) {
 			return newObjectLayerFn().GetBucketInfo(ctx, bucket)
 		},
-		NewMultipartUploadFn: func(ctx context.Context, bucket, object string, metadata map[string]string) (uploadID string, err error) {
-			return newObjectLayerFn().NewMultipartUpload(ctx, bucket, object, metadata)
+		NewMultipartUploadFn: func(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error) {
+			return newObjectLayerFn().NewMultipartUpload(ctx, bucket, object, opts)
 		},
-		PutObjectPartFn: func(ctx context.Context, bucket, object, uploadID string, partID int, data *hash.Reader) (info PartInfo, err error) {
-			return newObjectLayerFn().PutObjectPart(ctx, bucket, object, uploadID, partID, data)
+		PutObjectPartFn: func(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error) {
+			return newObjectLayerFn().PutObjectPart(ctx, bucket, object, uploadID, partID, data, opts)
 		},
 		AbortMultipartUploadFn: func(ctx context.Context, bucket, object, uploadID string) error {
 			return newObjectLayerFn().AbortMultipartUpload(ctx, bucket, object, uploadID)
 		},
-		CompleteMultipartUploadFn: func(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart) (objInfo ObjectInfo, err error) {
-			return newObjectLayerFn().CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts)
+		CompleteMultipartUploadFn: func(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error) {
+			return newObjectLayerFn().CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, opts)
 		},
 		DeleteBucketFn: func(ctx context.Context, bucket string) error {
 			return newObjectLayerFn().DeleteBucket(ctx, bucket)

cmd/disk-cache_test.go

@@ -19,7 +19,6 @@ package cmd
 import (
 	"bytes"
 	"context"
-	"os"
 	"reflect"
 	"testing"
 	"time"
@@ -28,21 +27,15 @@ import (
 )
 
 // Initialize cache FS objects.
-func initCacheFSObjects(disk string, cacheMaxUse int, t *testing.T) (*cacheFSObjects, error) {
-	newTestConfig(globalMinioDefaultRegion)
-	var err error
-	obj, err := newCacheFSObjects(disk, globalCacheExpiry, cacheMaxUse)
-	if err != nil {
-		t.Fatal(err)
-	}
-	return obj, nil
+func initCacheFSObjects(disk string, cacheMaxUse int) (*cacheFSObjects, error) {
+	return newCacheFSObjects(disk, globalCacheExpiry, cacheMaxUse)
 }
 
 // inits diskCache struct for nDisks
 func initDiskCaches(drives []string, cacheMaxUse int, t *testing.T) (*diskCache, error) {
 	var cfs []*cacheFSObjects
 	for _, d := range drives {
-		obj, err := initCacheFSObjects(d, cacheMaxUse, t)
+		obj, err := initCacheFSObjects(d, cacheMaxUse)
 		if err != nil {
 			return nil, err
 		}
@@ -131,11 +124,6 @@ func TestGetCacheFSMaxUse(t *testing.T) {
 
 // test wildcard patterns for excluding entries from cache
 func TestCacheExclusion(t *testing.T) {
-	rootPath, err := newTestConfig(globalMinioDefaultRegion)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer os.RemoveAll(rootPath)
 	fsDirs, err := getRandomDisks(1)
 	if err != nil {
 		t.Fatal(err)
@@ -146,7 +134,7 @@ func TestCacheExclusion(t *testing.T) {
 		t.Fatal(err)
 	}
 	cobj := cobjects.(*cacheObjects)
-	globalServiceDoneCh <- struct{}{}
+	GlobalServiceDoneCh <- struct{}{}
 	testCases := []struct {
 		bucketName     string
 		objectName     string
@@ -204,17 +192,17 @@ func TestDiskCache(t *testing.T) {
 	objInfo.ContentType = contentType
 	objInfo.ETag = etag
 	objInfo.UserDefined = httpMeta
-
+	var opts ObjectOptions
 	byteReader := bytes.NewReader([]byte(content))
-	hashReader, err := hash.NewReader(byteReader, int64(size), "", "")
+	hashReader, err := hash.NewReader(byteReader, int64(size), "", "", int64(size))
 	if err != nil {
 		t.Fatal(err)
 	}
-	err = cache.Put(ctx, bucketName, objectName, hashReader, httpMeta)
+	err = cache.Put(ctx, bucketName, objectName, NewPutObjReader(hashReader, nil, nil), ObjectOptions{UserDefined: httpMeta})
 	if err != nil {
 		t.Fatal(err)
 	}
-	cachedObjInfo, err := cache.GetObjectInfo(ctx, bucketName, objectName)
+	cachedObjInfo, err := cache.GetObjectInfo(ctx, bucketName, objectName, opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -231,7 +219,7 @@ func TestDiskCache(t *testing.T) {
 		t.Fatal("Cached content-type does not match")
 	}
 	writer := bytes.NewBuffer(nil)
-	err = cache.Get(ctx, bucketName, objectName, 0, int64(size), writer, "")
+	err = cache.Get(ctx, bucketName, objectName, 0, int64(size), writer, "", opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -278,23 +266,24 @@ func TestDiskCacheMaxUse(t *testing.T) {
 	objInfo.ContentType = contentType
 	objInfo.ETag = etag
 	objInfo.UserDefined = httpMeta
+	opts := ObjectOptions{}
 
 	byteReader := bytes.NewReader([]byte(content))
-	hashReader, err := hash.NewReader(byteReader, int64(size), "", "")
+	hashReader, err := hash.NewReader(byteReader, int64(size), "", "", int64(size))
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !cache.diskAvailable(int64(size)) {
-		err = cache.Put(ctx, bucketName, objectName, hashReader, httpMeta)
+		err = cache.Put(ctx, bucketName, objectName, NewPutObjReader(hashReader, nil, nil), ObjectOptions{UserDefined: httpMeta})
 		if err != errDiskFull {
 			t.Fatal("Cache max-use limit violated.")
 		}
 	} else {
-		err = cache.Put(ctx, bucketName, objectName, hashReader, httpMeta)
+		err = cache.Put(ctx, bucketName, objectName, NewPutObjReader(hashReader, nil, nil), ObjectOptions{UserDefined: httpMeta})
 		if err != nil {
 			t.Fatal(err)
 		}
-		cachedObjInfo, err := cache.GetObjectInfo(ctx, bucketName, objectName)
+		cachedObjInfo, err := cache.GetObjectInfo(ctx, bucketName, objectName, opts)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -311,7 +300,7 @@ func TestDiskCacheMaxUse(t *testing.T) {
 			t.Fatal("Cached content-type does not match")
 		}
 		writer := bytes.NewBuffer(nil)
-		err = cache.Get(ctx, bucketName, objectName, 0, int64(size), writer, "")
+		err = cache.Get(ctx, bucketName, objectName, 0, int64(size), writer, "", opts)
 		if err != nil {
 			t.Fatal(err)
 		}

cmd/dummy-data-generator_test.go

@@ -0,0 +1,182 @@
+/*
+ * Minio Cloud Storage, (C) 2018 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"testing"
+)
+
+var alphabets = []byte("abcdefghijklmnopqrstuvwxyz0123456789")
+
+// DummyDataGen returns a reader that repeats the bytes in `alphabets`
+// upto the desired length.
+type DummyDataGen struct {
+	b           []byte
+	idx, length int64
+}
+
+// NewDummyDataGen returns a ReadSeeker over the first `totalLength`
+// bytes from the infinite stream consisting of repeated
+// concatenations of `alphabets`.
+//
+// The skipOffset (generally = 0) can be used to skip a given number
+// of bytes from the beginning of the infinite stream. This is useful
+// to compare such streams of bytes that may be split up, because:
+//
+// Given the function:
+//
+// f := func(r io.Reader) string {
+//           b, _ := ioutil.ReadAll(r)
+//           return string(b)
+// }
+//
+// for example, the following is true:
+//
+// f(NewDummyDataGen(100, 0)) == f(NewDummyDataGen(50, 0)) + f(NewDummyDataGen(50, 50))
+func NewDummyDataGen(totalLength, skipOffset int64) io.ReadSeeker {
+	if totalLength < 0 {
+		panic("Negative length passed to DummyDataGen!")
+	}
+	if skipOffset < 0 {
+		panic("Negative rotations are not allowed")
+	}
+
+	skipOffset = skipOffset % int64(len(alphabets))
+	as := make([]byte, 2*len(alphabets))
+	copy(as, alphabets)
+	copy(as[len(alphabets):], alphabets)
+	b := as[skipOffset : skipOffset+int64(len(alphabets))]
+	return &DummyDataGen{
+		length: totalLength,
+		b:      b,
+	}
+}
+
+func (d *DummyDataGen) Read(b []byte) (n int, err error) {
+	k := len(b)
+	numLetters := int64(len(d.b))
+	for k > 0 && d.idx < d.length {
+		w := copy(b[len(b)-k:], d.b[d.idx%numLetters:])
+		k -= w
+		d.idx += int64(w)
+		n += w
+	}
+	if d.idx >= d.length {
+		extraBytes := d.idx - d.length
+		n -= int(extraBytes)
+		if n < 0 {
+			n = 0
+		}
+		err = io.EOF
+	}
+	return
+}
+
+func (d *DummyDataGen) Seek(offset int64, whence int) (int64, error) {
+	switch whence {
+	case io.SeekStart:
+		if offset < 0 {
+			return 0, errors.New("Invalid offset")
+		}
+		d.idx = offset
+	case io.SeekCurrent:
+		if d.idx+offset < 0 {
+			return 0, errors.New("Invalid offset")
+		}
+		d.idx += offset
+	case io.SeekEnd:
+		if d.length+offset < 0 {
+			return 0, errors.New("Invalid offset")
+		}
+		d.idx = d.length + offset
+	}
+	return d.idx, nil
+}
+
+func TestDummyDataGenerator(t *testing.T) {
+	readAll := func(r io.Reader) string {
+		b, _ := ioutil.ReadAll(r)
+		return string(b)
+	}
+	checkEq := func(a, b string) {
+		if a != b {
+			t.Fatalf("Unexpected equality failure")
+		}
+	}
+
+	checkEq(readAll(NewDummyDataGen(0, 0)), "")
+
+	checkEq(readAll(NewDummyDataGen(10, 0)), readAll(NewDummyDataGen(10, int64(len(alphabets)))))
+
+	checkEq(readAll(NewDummyDataGen(100, 0)), readAll(NewDummyDataGen(50, 0))+readAll(NewDummyDataGen(50, 50)))
+
+	r := NewDummyDataGen(100, 0)
+	r.Seek(int64(len(alphabets)), 0)
+	checkEq(readAll(r), readAll(NewDummyDataGen(100-int64(len(alphabets)), 0)))
+}
+
+// Compares all the bytes returned by the given readers. Any Read
+// errors cause a `false` result. A string describing the error is
+// also returned.
+func cmpReaders(r1, r2 io.Reader) (bool, string) {
+	bufLen := 32 * 1024
+	b1, b2 := make([]byte, bufLen), make([]byte, bufLen)
+	for i := 0; true; i++ {
+		n1, e1 := io.ReadFull(r1, b1)
+		n2, e2 := io.ReadFull(r2, b2)
+		if n1 != n2 {
+			return false, fmt.Sprintf("Read %d != %d bytes from the readers", n1, n2)
+		}
+		if !bytes.Equal(b1[:n1], b2[:n2]) {
+			return false, fmt.Sprintf("After reading %d equal buffers (32Kib each), we got the following two strings:\n%v\n%v\n",
+				i, b1, b2)
+		}
+		// Check if stream has ended
+		if (e1 == io.ErrUnexpectedEOF && e2 == io.ErrUnexpectedEOF) || (e1 == io.EOF && e2 == io.EOF) {
+			break
+		}
+		if e1 != nil || e2 != nil {
+			return false, fmt.Sprintf("Got unexpected error values: %v == %v", e1, e2)
+		}
+	}
+	return true, ""
+}
+
+func TestCmpReaders(t *testing.T) {
+	{
+		r1 := bytes.NewBuffer([]byte("abc"))
+		r2 := bytes.NewBuffer([]byte("abc"))
+		ok, msg := cmpReaders(r1, r2)
+		if !(ok && msg == "") {
+			t.Fatalf("unexpected")
+		}
+	}
+
+	{
+		r1 := bytes.NewBuffer([]byte("abc"))
+		r2 := bytes.NewBuffer([]byte("abcd"))
+		ok, _ := cmpReaders(r1, r2)
+		if ok {
+			t.Fatalf("unexpected")
+		}
+	}
+}

cmd/dummy-handlers.go

@@ -0,0 +1,234 @@
+/*
+ * Minio Cloud Storage, (C) 2018, 2019 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"encoding/xml"
+	"net/http"
+
+	"github.com/gorilla/mux"
+	"github.com/minio/minio/pkg/policy"
+)
+
+// Data types used for returning dummy tagging XML.
+// These variables shouldn't be used elsewhere.
+// They are only defined to be used in this file alone.
+
+type tagging struct {
+	XMLName xml.Name `xml:"Tagging"`
+	TagSet  tagSet   `xml:"TagSet"`
+}
+
+type tagSet struct {
+	Tag []tagElem `xml:"Tag"`
+}
+
+type tagElem struct {
+	Key   string `xml:"Key"`
+	Value string `xml:"Value"`
+}
+
+// GetBucketWebsite  - GET bucket website, a dummy api
+func (api objectAPIHandlers) GetBucketWebsiteHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketVersioning - GET bucket versioning, a dummy api
+func (api objectAPIHandlers) GetBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketAccelerate  - GET bucket accelerate, a dummy api
+func (api objectAPIHandlers) GetBucketAccelerateHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketRequestPaymentHandler - GET bucket requestPayment, a dummy api
+func (api objectAPIHandlers) GetBucketRequestPaymentHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketLoggingHandler - GET bucket logging, a dummy api
+func (api objectAPIHandlers) GetBucketLoggingHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketLifecycleHandler - GET bucket lifecycle, a dummy api
+func (api objectAPIHandlers) GetBucketLifecycleHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketReplicationHandler - GET bucket replication, a dummy api
+func (api objectAPIHandlers) GetBucketReplicationHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// DeleteBucketTaggingHandler - DELETE bucket tagging, a dummy api
+func (api objectAPIHandlers) DeleteBucketTaggingHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+// DeleteBucketWebsiteHandler - DELETE bucket website, a dummy api
+func (api objectAPIHandlers) DeleteBucketWebsiteHandler(w http.ResponseWriter, r *http.Request) {
+	writeSuccessResponseHeadersOnly(w)
+	w.(http.Flusher).Flush()
+}
+
+type allowedMethod string
+
+// Define strings
+const (
+	GET    allowedMethod = http.MethodGet
+	PUT    allowedMethod = http.MethodPut
+	HEAD   allowedMethod = http.MethodHead
+	POST   allowedMethod = http.MethodPost
+	DELETE allowedMethod = http.MethodDelete
+)
+
+// GetBucketCorsHandler - GET bucket cors, a dummy api
+func (api objectAPIHandlers) GetBucketCorsHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "GetBucketCorsHandler")
+
+	type corsRule struct {
+		AllowedHeaders []string        `xml:"AllowedHeaders"`
+		AllowedMethods []allowedMethod `xml:"AllowedMethod"`
+		AllowedOrigins []string        `xml:"AllowedOrigin"`
+		ExposeHeaders  []string        `xml:"ExposeHeader"`
+		MaxAgeSeconds  int64           `xml:"MaxAgeSeconds"`
+	}
+
+	type corsConfiguration struct {
+		XMLName  xml.Name   `xml:"CORSConfiguration"`
+		CorsRule []corsRule `xml:"CORSRule"`
+	}
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	objAPI := api.ObjectAPI()
+	if objAPI == nil {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Allow getBucketCors if policy action is set, since this is a dummy call
+	// we are simply re-purposing the bucketPolicyAction.
+	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Validate if bucket exists, before proceeding further...
+	_, err := objAPI.GetBucketInfo(ctx, bucket)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	cors := &corsConfiguration{}
+	if err := xml.NewEncoder(w).Encode(cors); err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	w.(http.Flusher).Flush()
+}
+
+// GetBucketTaggingHandler - GET bucket tagging, a dummy api
+func (api objectAPIHandlers) GetBucketTaggingHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "GetBucketTagging")
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	objAPI := api.ObjectAPI()
+	if objAPI == nil {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Allow getBucketTagging if policy action is set, since this is a dummy call
+	// we are simply re-purposing the bucketPolicyAction.
+	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Validate if bucket exists, before proceeding further...
+	_, err := objAPI.GetBucketInfo(ctx, bucket)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	tags := &tagging{}
+	tags.TagSet.Tag = append(tags.TagSet.Tag, tagElem{})
+
+	if err := xml.NewEncoder(w).Encode(tags); err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	w.(http.Flusher).Flush()
+}
+
+// GetObjectTaggingHandler - GET object tagging, a dummy api
+func (api objectAPIHandlers) GetObjectTaggingHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "GetObjectTagging")
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+	object := vars["object"]
+
+	objAPI := api.ObjectAPI()
+	if objAPI == nil {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Allow getObjectTagging if policy action is set, since this is a dummy call
+	// we are simply re-purposing the bucketPolicyAction.
+	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Validate if object exists, before proceeding further...
+	_, err := objAPI.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	tags := &tagging{}
+	tags.TagSet.Tag = append(tags.TagSet.Tag, tagElem{})
+
+	if err := xml.NewEncoder(w).Encode(tags); err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	w.(http.Flusher).Flush()
+}

cmd/dummy-object-layer_test.go

@@ -1,165 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2018 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cmd
-
-import (
-	"context"
-	"io"
-	"time"
-
-	"github.com/minio/minio/pkg/hash"
-	"github.com/minio/minio/pkg/madmin"
-	"github.com/minio/minio/pkg/policy"
-)
-
-type DummyObjectLayer struct{}
-
-func (api *DummyObjectLayer) Shutdown(context.Context) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) StorageInfo(context.Context) (si StorageInfo) {
-	return
-}
-
-func (api *DummyObjectLayer) MakeBucketWithLocation(ctx context.Context, bucket string, location string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) GetBucketInfo(ctx context.Context, bucket string) (bucketInfo BucketInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListBuckets(ctx context.Context) (buckets []BucketInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) DeleteBucket(ctx context.Context, bucket string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListObjects(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (result ListObjectsInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListObjectsV2(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (result ListObjectsV2Info, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) GetObjectInfo(ctx context.Context, bucket, object string) (objInfo ObjectInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) PutObject(ctx context.Context, bucket, object string, data *hash.Reader, metadata map[string]string) (objInfo ObjectInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) CopyObject(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, srcInfo ObjectInfo) (objInfo ObjectInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) DeleteObject(ctx context.Context, bucket, object string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListMultipartUploads(ctx context.Context, bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (result ListMultipartsInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) NewMultipartUpload(ctx context.Context, bucket, object string, metadata map[string]string) (uploadID string, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) CopyObjectPart(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, uploadID string, partID int, startOffset int64, length int64, srcInfo ObjectInfo) (info PartInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *hash.Reader) (info PartInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker int, maxParts int) (result ListPartsInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart) (objInfo ObjectInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ReloadFormat(ctx context.Context, dryRun bool) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) HealFormat(ctx context.Context, dryRun bool) (item madmin.HealResultItem, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) HealBucket(ctx context.Context, bucket string, dryRun bool) (items []madmin.HealResultItem, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) HealObject(ctx context.Context, bucket, object string, dryRun bool) (item madmin.HealResultItem, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListBucketsHeal(ctx context.Context) (buckets []BucketInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListObjectsHeal(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (info ListObjectsInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ListLocks(ctx context.Context, bucket, prefix string, duration time.Duration) (info []VolumeLockInfo, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) ClearLocks(context.Context, []VolumeLockInfo) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) SetBucketPolicy(context.Context, string, *policy.Policy) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) GetBucketPolicy(context.Context, string) (bucketPolicy *policy.Policy, err error) {
-	return
-}
-
-func (api *DummyObjectLayer) RefreshBucketPolicy(context.Context, string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) DeleteBucketPolicy(context.Context, string) (err error) {
-	return
-}
-
-func (api *DummyObjectLayer) IsNotificationSupported() (b bool) {
-	return
-}
-
-func (api *DummyObjectLayer) IsEncryptionSupported() (b bool) {
-	return
-}

cmd/encryption-v1_test.go

@@ -18,21 +18,55 @@ package cmd
 
 import (
 	"bytes"
+	"encoding/base64"
 	"net/http"
 	"testing"
+
+	humanize "github.com/dustin/go-humanize"
+	"github.com/minio/minio-go/pkg/encrypt"
+	"github.com/minio/minio/cmd/crypto"
+	"github.com/minio/sio"
 )
 
+var hasServerSideEncryptionHeaderTests = []struct {
+	headers    map[string]string
+	sseRequest bool
+}{
+	{headers: map[string]string{crypto.SSECAlgorithm: "AES256", crypto.SSECKey: "key", crypto.SSECKeyMD5: "md5"}, sseRequest: true},                             // 0
+	{headers: map[string]string{crypto.SSECAlgorithm: "AES256"}, sseRequest: true},                                                                              // 1
+	{headers: map[string]string{crypto.SSECKey: "key"}, sseRequest: true},                                                                                       // 2
+	{headers: map[string]string{crypto.SSECKeyMD5: "md5"}, sseRequest: true},                                                                                    // 3
+	{headers: map[string]string{}, sseRequest: false},                                                                                                           // 4
+	{headers: map[string]string{crypto.SSECopyAlgorithm + " ": "AES256", " " + crypto.SSECopyKey: "key", crypto.SSECopyKeyMD5 + " ": "md5"}, sseRequest: false}, // 5
+	{headers: map[string]string{crypto.SSECopyAlgorithm: "", crypto.SSECopyKey: "", crypto.SSECopyKeyMD5: ""}, sseRequest: false},                               // 6
+	{headers: map[string]string{crypto.SSEHeader: ""}, sseRequest: true},                                                                                        // 7
+}
+
+func TestHasServerSideEncryptionHeader(t *testing.T) {
+	for i, test := range hasServerSideEncryptionHeaderTests {
+		headers := http.Header{}
+		for k, v := range test.headers {
+			headers.Set(k, v)
+		}
+		if hasServerSideEncryptionHeader(headers) != test.sseRequest {
+			t.Errorf("Test %d: Expected hasServerSideEncryptionHeader to return %v", i, test.sseRequest)
+		}
+	}
+}
+
 var hasSSECopyCustomerHeaderTests = []struct {
 	headers    map[string]string
 	sseRequest bool
 }{
-	{headers: map[string]string{SSECopyCustomerAlgorithm: "AES256", SSECopyCustomerKey: "key", SSECopyCustomerKeyMD5: "md5"}, sseRequest: true},                    // 0
-	{headers: map[string]string{SSECopyCustomerAlgorithm: "AES256"}, sseRequest: true},                                                                             // 1
-	{headers: map[string]string{SSECopyCustomerKey: "key"}, sseRequest: true},                                                                                      // 2
-	{headers: map[string]string{SSECopyCustomerKeyMD5: "md5"}, sseRequest: true},                                                                                   // 3
-	{headers: map[string]string{}, sseRequest: false},                                                                                                              // 4
-	{headers: map[string]string{SSECopyCustomerAlgorithm + " ": "AES256", " " + SSECopyCustomerKey: "key", SSECopyCustomerKeyMD5 + " ": "md5"}, sseRequest: false}, // 5
-	{headers: map[string]string{SSECopyCustomerAlgorithm: "", SSECopyCustomerKey: "", SSECopyCustomerKeyMD5: ""}, sseRequest: false},                               // 6
+	{headers: map[string]string{crypto.SSECopyAlgorithm: "AES256", crypto.SSECopyKey: "key", crypto.SSECopyKeyMD5: "md5"}, sseRequest: true},                    // 0
+	{headers: map[string]string{crypto.SSECopyAlgorithm: "AES256"}, sseRequest: true},                                                                           // 1
+	{headers: map[string]string{crypto.SSECopyKey: "key"}, sseRequest: true},                                                                                    // 2
+	{headers: map[string]string{crypto.SSECopyKeyMD5: "md5"}, sseRequest: true},                                                                                 // 3
+	{headers: map[string]string{}, sseRequest: false},                                                                                                           // 4
+	{headers: map[string]string{crypto.SSECopyAlgorithm + " ": "AES256", " " + crypto.SSECopyKey: "key", crypto.SSECopyKeyMD5 + " ": "md5"}, sseRequest: false}, // 5
+	{headers: map[string]string{crypto.SSECopyAlgorithm: "", crypto.SSECopyKey: "", crypto.SSECopyKeyMD5: ""}, sseRequest: true},                                // 6
+	{headers: map[string]string{crypto.SSEHeader: ""}, sseRequest: false},                                                                                       // 7
+
 }
 
 func TestIsSSECopyCustomerRequest(t *testing.T) {
@@ -41,8 +75,8 @@ func TestIsSSECopyCustomerRequest(t *testing.T) {
 		for k, v := range test.headers {
 			headers.Set(k, v)
 		}
-		if hasSSECopyCustomerHeader(headers) != test.sseRequest {
-			t.Errorf("Test %d: Expected hasSSECopyCustomerHeader to return %v", i, test.sseRequest)
+		if crypto.SSECopy.IsRequested(headers) != test.sseRequest {
+			t.Errorf("Test %d: Expected crypto.SSECopy.IsRequested to return %v", i, test.sseRequest)
 		}
 	}
 }
@@ -51,250 +85,49 @@ var hasSSECustomerHeaderTests = []struct {
 	headers    map[string]string
 	sseRequest bool
 }{
-	{headers: map[string]string{SSECustomerAlgorithm: "AES256", SSECustomerKey: "key", SSECustomerKeyMD5: "md5"}, sseRequest: true},                    // 0
-	{headers: map[string]string{SSECustomerAlgorithm: "AES256"}, sseRequest: true},                                                                     // 1
-	{headers: map[string]string{SSECustomerKey: "key"}, sseRequest: true},                                                                              // 2
-	{headers: map[string]string{SSECustomerKeyMD5: "md5"}, sseRequest: true},                                                                           // 3
+	{headers: map[string]string{crypto.SSECAlgorithm: "AES256", crypto.SSECKey: "key", crypto.SSECKeyMD5: "md5"}, sseRequest: true},                    // 0
+	{headers: map[string]string{crypto.SSECAlgorithm: "AES256"}, sseRequest: true},                                                                     // 1
+	{headers: map[string]string{crypto.SSECKey: "key"}, sseRequest: true},                                                                              // 2
+	{headers: map[string]string{crypto.SSECKeyMD5: "md5"}, sseRequest: true},                                                                           // 3
 	{headers: map[string]string{}, sseRequest: false},                                                                                                  // 4
-	{headers: map[string]string{SSECustomerAlgorithm + " ": "AES256", " " + SSECustomerKey: "key", SSECustomerKeyMD5 + " ": "md5"}, sseRequest: false}, // 5
-	{headers: map[string]string{SSECustomerAlgorithm: "", SSECustomerKey: "", SSECustomerKeyMD5: ""}, sseRequest: false},                               // 6
+	{headers: map[string]string{crypto.SSECAlgorithm + " ": "AES256", " " + crypto.SSECKey: "key", crypto.SSECKeyMD5 + " ": "md5"}, sseRequest: false}, // 5
+	{headers: map[string]string{crypto.SSECAlgorithm: "", crypto.SSECKey: "", crypto.SSECKeyMD5: ""}, sseRequest: true},                                // 6
+	{headers: map[string]string{crypto.SSEHeader: ""}, sseRequest: false},                                                                              // 7
+
 }
 
-func TesthasSSECustomerHeader(t *testing.T) {
+func TestHasSSECustomerHeader(t *testing.T) {
 	for i, test := range hasSSECustomerHeaderTests {
 		headers := http.Header{}
 		for k, v := range test.headers {
 			headers.Set(k, v)
 		}
-		if hasSSECustomerHeader(headers) != test.sseRequest {
+		if crypto.SSEC.IsRequested(headers) != test.sseRequest {
 			t.Errorf("Test %d: Expected hasSSECustomerHeader to return %v", i, test.sseRequest)
 		}
 	}
 }
 
-var parseSSECustomerRequestTests = []struct {
-	headers map[string]string
-	useTLS  bool
-	err     error
-}{
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=", // 0
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
-		},
-		useTLS: true, err: nil,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=", // 1
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
-		},
-		useTLS: false, err: errInsecureSSERequest,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES 256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=", // 2
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
-		},
-		useTLS: true, err: errInvalidSSEAlgorithm,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "NjE0SL87s+ZhYtaTrg5eI5cjhCQLGPVMKenPG2bCJFw=", // 3
-			SSECustomerKeyMD5:    "H+jq/LwEOEO90YtiTuNFVw==",
-		},
-		useTLS: true, err: errSSEKeyMD5Mismatch,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       " jE0SL87s+ZhYtaTrg5eI5cjhCQLGPVMKenPG2bCJFw=", // 4
-			SSECustomerKeyMD5:    "H+jq/LwEOEO90YtiTuNFVw==",
-		},
-		useTLS: true, err: errInvalidSSEKey,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "NjE0SL87s+ZhYtaTrg5eI5cjhCQLGPVMKenPG2bCJFw=", // 5
-			SSECustomerKeyMD5:    " +jq/LwEOEO90YtiTuNFVw==",
-		},
-		useTLS: true, err: errSSEKeyMD5Mismatch,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "vFQ9ScFOF6Tu/BfzMS+rVMvlZGJHi5HmGJenJfrfKI45", // 6
-			SSECustomerKeyMD5:    "9KPgDdZNTHimuYCwnJTp5g==",
-		},
-		useTLS: true, err: errInvalidSSEKey,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "", // 7
-			SSECustomerKeyMD5:    "9KPgDdZNTHimuYCwnJTp5g==",
-		},
-		useTLS: true, err: errMissingSSEKey,
-	},
-	{
-		headers: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "vFQ9ScFOF6Tu/BfzMS+rVMvlZGJHi5HmGJenJfrfKI45", // 8
-			SSECustomerKeyMD5:    "",
-		},
-		useTLS: true, err: errMissingSSEKeyMD5,
-	},
-}
-
-func TestParseSSECustomerRequest(t *testing.T) {
-	defer func(flag bool) { globalIsSSL = flag }(globalIsSSL)
-	for i, test := range parseSSECustomerRequestTests {
-		headers := http.Header{}
-		for k, v := range test.headers {
-			headers.Set(k, v)
-		}
-		request := &http.Request{}
-		request.Header = headers
-		globalIsSSL = test.useTLS
-
-		_, err := ParseSSECustomerRequest(request)
-		if err != test.err {
-			t.Errorf("Test %d: Parse returned: %v want: %v", i, err, test.err)
-		}
-		key := request.Header.Get(SSECustomerKey)
-		if (err == nil || err == errSSEKeyMD5Mismatch) && key != "" {
-			t.Errorf("Test %d: Client key survived parsing - found key: %v", i, key)
-		}
-
-	}
-}
-
-var parseSSECopyCustomerRequestTests = []struct {
-	headers map[string]string
-	useTLS  bool
-	err     error
-}{
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=", // 0
-			SSECopyCustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
-		},
-		useTLS: true, err: nil,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=", // 1
-			SSECopyCustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
-		},
-		useTLS: false, err: errInsecureSSERequest,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES 256",
-			SSECopyCustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=", // 2
-			SSECopyCustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
-		},
-		useTLS: true, err: errInvalidSSEAlgorithm,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "NjE0SL87s+ZhYtaTrg5eI5cjhCQLGPVMKenPG2bCJFw=", // 3
-			SSECopyCustomerKeyMD5:    "H+jq/LwEOEO90YtiTuNFVw==",
-		},
-		useTLS: true, err: errSSEKeyMD5Mismatch,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       " jE0SL87s+ZhYtaTrg5eI5cjhCQLGPVMKenPG2bCJFw=", // 4
-			SSECopyCustomerKeyMD5:    "H+jq/LwEOEO90YtiTuNFVw==",
-		},
-		useTLS: true, err: errInvalidSSEKey,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "NjE0SL87s+ZhYtaTrg5eI5cjhCQLGPVMKenPG2bCJFw=", // 5
-			SSECopyCustomerKeyMD5:    " +jq/LwEOEO90YtiTuNFVw==",
-		},
-		useTLS: true, err: errSSEKeyMD5Mismatch,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "vFQ9ScFOF6Tu/BfzMS+rVMvlZGJHi5HmGJenJfrfKI45", // 6
-			SSECopyCustomerKeyMD5:    "9KPgDdZNTHimuYCwnJTp5g==",
-		},
-		useTLS: true, err: errInvalidSSEKey,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "", // 7
-			SSECopyCustomerKeyMD5:    "9KPgDdZNTHimuYCwnJTp5g==",
-		},
-		useTLS: true, err: errMissingSSEKey,
-	},
-	{
-		headers: map[string]string{
-			SSECopyCustomerAlgorithm: "AES256",
-			SSECopyCustomerKey:       "vFQ9ScFOF6Tu/BfzMS+rVMvlZGJHi5HmGJenJfrfKI45", // 8
-			SSECopyCustomerKeyMD5:    "",
-		},
-		useTLS: true, err: errMissingSSEKeyMD5,
-	},
-}
-
-func TestParseSSECopyCustomerRequest(t *testing.T) {
-	defer func(flag bool) { globalIsSSL = flag }(globalIsSSL)
-	for i, test := range parseSSECopyCustomerRequestTests {
-		headers := http.Header{}
-		for k, v := range test.headers {
-			headers.Set(k, v)
-		}
-		request := &http.Request{}
-		request.Header = headers
-		globalIsSSL = test.useTLS
-
-		_, err := ParseSSECopyCustomerRequest(request)
-		if err != test.err {
-			t.Errorf("Test %d: Parse returned: %v want: %v", i, err, test.err)
-		}
-		key := request.Header.Get(SSECopyCustomerKey)
-		if (err == nil || err == errSSEKeyMD5Mismatch) && key != "" {
-			t.Errorf("Test %d: Client key survived parsing - found key: %v", i, key)
-		}
-	}
-}
-
 var encryptRequestTests = []struct {
 	header   map[string]string
 	metadata map[string]string
 }{
 	{
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
 		},
 		metadata: map[string]string{},
 	},
 	{
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
 		},
 		metadata: map[string]string{
-			SSECustomerKey: "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECKey: "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
 		},
 	},
 }
@@ -308,20 +141,18 @@ func TestEncryptRequest(t *testing.T) {
 		for k, v := range test.header {
 			req.Header.Set(k, v)
 		}
-		_, err := EncryptRequest(content, req, "bucket", "object", test.metadata)
+		_, _, err := EncryptRequest(content, req, "bucket", "object", test.metadata)
+
 		if err != nil {
 			t.Fatalf("Test %d: Failed to encrypt request: %v", i, err)
 		}
-		if key, ok := test.metadata[SSECustomerKey]; ok {
-			t.Errorf("Test %d: Client provided key survived in metadata - key: %s", i, key)
-		}
-		if kdf, ok := test.metadata[ServerSideEncryptionSealAlgorithm]; !ok {
+		if kdf, ok := test.metadata[crypto.SSESealAlgorithm]; !ok {
 			t.Errorf("Test %d: ServerSideEncryptionKDF must be part of metadata: %v", i, kdf)
 		}
-		if iv, ok := test.metadata[ServerSideEncryptionIV]; !ok {
-			t.Errorf("Test %d: ServerSideEncryptionIV must be part of metadata: %v", i, iv)
+		if iv, ok := test.metadata[crypto.SSEIV]; !ok {
+			t.Errorf("Test %d: crypto.SSEIV must be part of metadata: %v", i, iv)
 		}
-		if mac, ok := test.metadata[ServerSideEncryptionSealedKey]; !ok {
+		if mac, ok := test.metadata[crypto.SSECSealedKey]; !ok {
 			t.Errorf("Test %d: ServerSideEncryptionKeyMAC must be part of metadata: %v", i, mac)
 		}
 	}
@@ -337,14 +168,14 @@ var decryptRequestTests = []struct {
 		bucket: "bucket",
 		object: "object",
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ=",
-			SSECustomerKeyMD5:    "7PpPLAK26ONlVUGOWlusfg==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ=",
+			crypto.SSECKeyMD5:    "7PpPLAK26ONlVUGOWlusfg==",
 		},
 		metadata: map[string]string{
-			ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256,
-			ServerSideEncryptionIV:            "7nQqotA8xgrPx6QK7Ap3GCfjKitqJSrGP7xzgErSJlw=",
-			ServerSideEncryptionSealedKey:     "EAAfAAAAAAD7v1hQq3PFRUHsItalxmrJqrOq6FwnbXNarxOOpb8jTWONPPKyM3Gfjkjyj6NCf+aB/VpHCLCTBA==",
+			crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256,
+			crypto.SSEIV:            "7nQqotA8xgrPx6QK7Ap3GCfjKitqJSrGP7xzgErSJlw=",
+			crypto.SSECSealedKey:    "EAAfAAAAAAD7v1hQq3PFRUHsItalxmrJqrOq6FwnbXNarxOOpb8jTWONPPKyM3Gfjkjyj6NCf+aB/VpHCLCTBA==",
 		},
 		shouldFail: false,
 	},
@@ -352,14 +183,14 @@ var decryptRequestTests = []struct {
 		bucket: "bucket",
 		object: "object",
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ=",
-			SSECustomerKeyMD5:    "7PpPLAK26ONlVUGOWlusfg==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ=",
+			crypto.SSECKeyMD5:    "7PpPLAK26ONlVUGOWlusfg==",
 		},
 		metadata: map[string]string{
-			ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareV2HmacSha256,
-			ServerSideEncryptionIV:            "qEqmsONcorqlcZXJxaw32H04eyXyXwUgjHzlhkaIYrU=",
-			ServerSideEncryptionSealedKey:     "IAAfAIM14ugTGcM/dIrn4iQMrkl1sjKyeBQ8FBEvRebYj8vWvxG+0cJRpC6NXRU1wJN50JaUOATjO7kz0wZ2mA==",
+			crypto.SSESealAlgorithm: SSESealAlgorithmDareV2HmacSha256,
+			crypto.SSEIV:            "qEqmsONcorqlcZXJxaw32H04eyXyXwUgjHzlhkaIYrU=",
+			crypto.SSECSealedKey:    "IAAfAIM14ugTGcM/dIrn4iQMrkl1sjKyeBQ8FBEvRebYj8vWvxG+0cJRpC6NXRU1wJN50JaUOATjO7kz0wZ2mA==",
 		},
 		shouldFail: false,
 	},
@@ -367,14 +198,14 @@ var decryptRequestTests = []struct {
 		bucket: "bucket",
 		object: "object",
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
 		},
 		metadata: map[string]string{
-			ServerSideEncryptionSealAlgorithm: "HMAC-SHA3",
-			ServerSideEncryptionIV:            "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			ServerSideEncryptionSealedKey:     "SY5E9AvI2tI7/nUrUAssIGE32Hcs4rR9z/CUuPqu5N4=",
+			crypto.SSESealAlgorithm: "HMAC-SHA3",
+			crypto.SSEIV:            "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECSealedKey:    "SY5E9AvI2tI7/nUrUAssIGE32Hcs4rR9z/CUuPqu5N4=",
 		},
 		shouldFail: true,
 	},
@@ -382,14 +213,14 @@ var decryptRequestTests = []struct {
 		bucket: "bucket",
 		object: "object",
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
 		},
 		metadata: map[string]string{
-			ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256,
-			ServerSideEncryptionIV:            "RrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			ServerSideEncryptionSealedKey:     "SY5E9AvI2tI7/nUrUAssIGE32Hcs4rR9z/CUuPqu5N4=",
+			crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256,
+			crypto.SSEIV:            "RrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECSealedKey:    "SY5E9AvI2tI7/nUrUAssIGE32Hcs4rR9z/CUuPqu5N4=",
 		},
 		shouldFail: true,
 	},
@@ -397,14 +228,14 @@ var decryptRequestTests = []struct {
 		bucket: "bucket",
 		object: "object",
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
-			SSECustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
+			crypto.SSECKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
 		},
 		metadata: map[string]string{
-			ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256,
-			ServerSideEncryptionIV:            "XAm0dRrJsEsyPb1UuFNezv1bl9ehxuYsgUVC/MUctE2k=",
-			ServerSideEncryptionSealedKey:     "SY5E9AvI2tI7/nUrUAssIGE32Hds4rR9z/CUuPqu5N4=",
+			crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256,
+			crypto.SSEIV:            "XAm0dRrJsEsyPb1UuFNezv1bl9ehxuYsgUVC/MUctE2k=",
+			crypto.SSECSealedKey:    "SY5E9AvI2tI7/nUrUAssIGE32Hds4rR9z/CUuPqu5N4=",
 		},
 		shouldFail: true,
 	},
@@ -412,14 +243,14 @@ var decryptRequestTests = []struct {
 		bucket: "bucket",
 		object: "object-2",
 		header: map[string]string{
-			SSECustomerAlgorithm: "AES256",
-			SSECustomerKey:       "MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ=",
-			SSECustomerKeyMD5:    "7PpPLAK26ONlVUGOWlusfg==",
+			crypto.SSECAlgorithm: "AES256",
+			crypto.SSECKey:       "MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ=",
+			crypto.SSECKeyMD5:    "7PpPLAK26ONlVUGOWlusfg==",
 		},
 		metadata: map[string]string{
-			ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareV2HmacSha256,
-			ServerSideEncryptionIV:            "qEqmsONcorqlcZXJxaw32H04eyXyXwUgjHzlhkaIYrU=",
-			ServerSideEncryptionSealedKey:     "IAAfAIM14ugTGcM/dIrn4iQMrkl1sjKyeBQ8FBEvRebYj8vWvxG+0cJRpC6NXRU1wJN50JaUOATjO7kz0wZ2mA==",
+			crypto.SSESealAlgorithm: SSESealAlgorithmDareV2HmacSha256,
+			crypto.SSEIV:            "qEqmsONcorqlcZXJxaw32H04eyXyXwUgjHzlhkaIYrU=",
+			crypto.SSECSealedKey:    "IAAfAIM14ugTGcM/dIrn4iQMrkl1sjKyeBQ8FBEvRebYj8vWvxG+0cJRpC6NXRU1wJN50JaUOATjO7kz0wZ2mA==",
 		},
 		shouldFail: true,
 	},
@@ -441,16 +272,16 @@ func TestDecryptRequest(t *testing.T) {
 		if err == nil && test.shouldFail {
 			t.Fatalf("Test %d: should fail but passed", i)
 		}
-		if key, ok := test.metadata[SSECustomerKey]; ok {
+		if key, ok := test.metadata[crypto.SSECKey]; ok {
 			t.Errorf("Test %d: Client provided key survived in metadata - key: %s", i, key)
 		}
-		if kdf, ok := test.metadata[ServerSideEncryptionSealAlgorithm]; ok && !test.shouldFail {
+		if kdf, ok := test.metadata[crypto.SSESealAlgorithm]; ok && !test.shouldFail {
 			t.Errorf("Test %d: ServerSideEncryptionKDF should not be part of metadata: %v", i, kdf)
 		}
-		if iv, ok := test.metadata[ServerSideEncryptionIV]; ok && !test.shouldFail {
-			t.Errorf("Test %d: ServerSideEncryptionIV should not be part of metadata: %v", i, iv)
+		if iv, ok := test.metadata[crypto.SSEIV]; ok && !test.shouldFail {
+			t.Errorf("Test %d: crypto.SSEIV should not be part of metadata: %v", i, iv)
 		}
-		if mac, ok := test.metadata[ServerSideEncryptionSealedKey]; ok && !test.shouldFail {
+		if mac, ok := test.metadata[crypto.SSECSealedKey]; ok && !test.shouldFail {
 			t.Errorf("Test %d: ServerSideEncryptionKeyMAC should not be part of metadata: %v", i, mac)
 		}
 	}
@@ -459,48 +290,471 @@ func TestDecryptRequest(t *testing.T) {
 var decryptObjectInfoTests = []struct {
 	info    ObjectInfo
 	headers http.Header
-	expErr  APIErrorCode
+	expErr  error
 }{
 	{
 		info:    ObjectInfo{Size: 100},
 		headers: http.Header{},
-		expErr:  ErrNone,
+		expErr:  nil,
 	},
 	{
-		info:    ObjectInfo{Size: 100, UserDefined: map[string]string{ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256}},
-		headers: http.Header{SSECustomerAlgorithm: []string{SSECustomerAlgorithmAES256}},
-		expErr:  ErrNone,
+		info:    ObjectInfo{Size: 100, UserDefined: map[string]string{crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256}},
+		headers: http.Header{crypto.SSECAlgorithm: []string{crypto.SSEAlgorithmAES256}},
+		expErr:  nil,
 	},
 	{
-		info:    ObjectInfo{Size: 0, UserDefined: map[string]string{ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256}},
-		headers: http.Header{SSECustomerAlgorithm: []string{SSECustomerAlgorithmAES256}},
-		expErr:  ErrNone,
+		info:    ObjectInfo{Size: 0, UserDefined: map[string]string{crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256}},
+		headers: http.Header{crypto.SSECAlgorithm: []string{crypto.SSEAlgorithmAES256}},
+		expErr:  nil,
 	},
 	{
-		info:    ObjectInfo{Size: 100, UserDefined: map[string]string{ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256}},
+		info:    ObjectInfo{Size: 100, UserDefined: map[string]string{crypto.SSECSealedKey: "EAAfAAAAAAD7v1hQq3PFRUHsItalxmrJqrOq6FwnbXNarxOOpb8jTWONPPKyM3Gfjkjyj6NCf+aB/VpHCLCTBA=="}},
 		headers: http.Header{},
-		expErr:  ErrSSEEncryptedObject,
+		expErr:  errEncryptedObject,
 	},
 	{
 		info:    ObjectInfo{Size: 100, UserDefined: map[string]string{}},
-		headers: http.Header{SSECustomerAlgorithm: []string{SSECustomerAlgorithmAES256}},
-		expErr:  ErrInvalidEncryptionParameters,
+		headers: http.Header{crypto.SSECAlgorithm: []string{crypto.SSEAlgorithmAES256}},
+		expErr:  errInvalidEncryptionParameters,
 	},
 	{
-		info:    ObjectInfo{Size: 31, UserDefined: map[string]string{ServerSideEncryptionSealAlgorithm: SSESealAlgorithmDareSha256}},
-		headers: http.Header{SSECustomerAlgorithm: []string{SSECustomerAlgorithmAES256}},
-		expErr:  ErrObjectTampered,
+		info:    ObjectInfo{Size: 31, UserDefined: map[string]string{crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256}},
+		headers: http.Header{crypto.SSECAlgorithm: []string{crypto.SSEAlgorithmAES256}},
+		expErr:  errObjectTampered,
 	},
 }
 
 func TestDecryptObjectInfo(t *testing.T) {
 	for i, test := range decryptObjectInfoTests {
-		if err, encrypted := DecryptObjectInfo(&test.info, test.headers); err != test.expErr {
+		if encrypted, err := DecryptObjectInfo(&test.info, test.headers); err != test.expErr {
 			t.Errorf("Test %d: Decryption returned wrong error code: got %d , want %d", i, err, test.expErr)
-		} else if enc := test.info.IsEncrypted(); encrypted && enc != encrypted {
+		} else if enc := crypto.IsEncrypted(test.info.UserDefined); encrypted && enc != encrypted {
 			t.Errorf("Test %d: Decryption thinks object is encrypted but it is not", i)
 		} else if !encrypted && enc != encrypted {
 			t.Errorf("Test %d: Decryption thinks object is not encrypted but it is", i)
 		}
 	}
 }
+
+// Tests for issue reproduced when getting the right encrypted
+// offset of the object.
+func TestGetDecryptedRange_Issue50(t *testing.T) {
+	rs, err := parseRequestRangeSpec("bytes=594870256-594870263")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	objInfo := ObjectInfo{
+		Bucket: "bucket",
+		Name:   "object",
+		Size:   595160760,
+		UserDefined: map[string]string{
+			crypto.SSEMultipart:                    "",
+			crypto.SSEIV:                           "HTexa=",
+			crypto.SSESealAlgorithm:                "DAREv2-HMAC-SHA256",
+			crypto.SSECSealedKey:                   "IAA8PGAA==",
+			ReservedMetadataPrefix + "actual-size": "594870264",
+			"content-type":                         "application/octet-stream",
+			"etag":                                 "166b1545b4c1535294ee0686678bea8c-2",
+		},
+		Parts: []ObjectPartInfo{
+			{
+				Number:     1,
+				Name:       "part.1",
+				ETag:       "etag1",
+				Size:       297580380,
+				ActualSize: 297435132,
+			},
+			{
+				Number:     2,
+				Name:       "part.2",
+				ETag:       "etag2",
+				Size:       297580380,
+				ActualSize: 297435132,
+			},
+		},
+	}
+
+	encOff, encLength, skipLen, seqNumber, partStart, err := objInfo.GetDecryptedRange(rs)
+	if err != nil {
+		t.Fatalf("Test: failed %s", err)
+	}
+	if encOff != 595127964 {
+		t.Fatalf("Test: expected %d, got %d", 595127964, encOff)
+	}
+	if encLength != 32796 {
+		t.Fatalf("Test: expected %d, got %d", 32796, encLength)
+	}
+	if skipLen != 32756 {
+		t.Fatalf("Test: expected %d, got %d", 32756, skipLen)
+	}
+	if seqNumber != 4538 {
+		t.Fatalf("Test: expected %d, got %d", 4538, seqNumber)
+	}
+	if partStart != 1 {
+		t.Fatalf("Test: expected %d, got %d", 1, partStart)
+	}
+}
+
+func TestGetDecryptedRange(t *testing.T) {
+	var (
+		pkgSz     = int64(64) * humanize.KiByte
+		minPartSz = int64(5) * humanize.MiByte
+		maxPartSz = int64(5) * humanize.GiByte
+
+		getEncSize = func(s int64) int64 {
+			v, _ := sio.EncryptedSize(uint64(s))
+			return int64(v)
+		}
+		udMap = func(isMulti bool) map[string]string {
+			m := map[string]string{
+				crypto.SSESealAlgorithm: SSESealAlgorithmDareSha256,
+				crypto.SSEMultipart:     "1",
+			}
+			if !isMulti {
+				delete(m, crypto.SSEMultipart)
+			}
+			return m
+		}
+	)
+
+	// Single part object tests
+	var (
+		mkSPObj = func(s int64) ObjectInfo {
+			return ObjectInfo{
+				Size:        getEncSize(s),
+				UserDefined: udMap(false),
+			}
+		}
+	)
+
+	testSP := []struct {
+		decSz int64
+		oi    ObjectInfo
+	}{
+		{0, mkSPObj(0)},
+		{1, mkSPObj(1)},
+		{pkgSz - 1, mkSPObj(pkgSz - 1)},
+		{pkgSz, mkSPObj(pkgSz)},
+		{2*pkgSz - 1, mkSPObj(2*pkgSz - 1)},
+		{minPartSz, mkSPObj(minPartSz)},
+		{maxPartSz, mkSPObj(maxPartSz)},
+	}
+
+	for i, test := range testSP {
+		{
+			// nil range
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(nil)
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+			if skip != 0 || sn != 0 || ps != 0 || o != 0 || l != getEncSize(test.decSz) {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d", i, o, l, skip, sn, ps)
+			}
+		}
+
+		if test.decSz >= 10 {
+			// first 10 bytes
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(&HTTPRangeSpec{false, 0, 9})
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+			var rLen = pkgSz + 32
+			if test.decSz < pkgSz {
+				rLen = test.decSz + 32
+			}
+			if skip != 0 || sn != 0 || ps != 0 || o != 0 || l != rLen {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d", i, o, l, skip, sn, ps)
+			}
+		}
+
+		kb32 := int64(32) * humanize.KiByte
+		if test.decSz >= (64+32)*humanize.KiByte {
+			// Skip the first 32Kib, and read the next 64Kib
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(&HTTPRangeSpec{false, kb32, 3*kb32 - 1})
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+			var rLen = (pkgSz + 32) * 2
+			if test.decSz < 2*pkgSz {
+				rLen = (pkgSz + 32) + (test.decSz - pkgSz + 32)
+			}
+			if skip != kb32 || sn != 0 || ps != 0 || o != 0 || l != rLen {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d", i, o, l, skip, sn, ps)
+			}
+		}
+
+		if test.decSz >= (64*2+32)*humanize.KiByte {
+			// Skip the first 96Kib and read the next 64Kib
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(&HTTPRangeSpec{false, 3 * kb32, 5*kb32 - 1})
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+			var rLen = (pkgSz + 32) * 2
+			if test.decSz-pkgSz < 2*pkgSz {
+				rLen = (pkgSz + 32) + (test.decSz - pkgSz + 32*2)
+			}
+			if skip != kb32 || sn != 1 || ps != 0 || o != pkgSz+32 || l != rLen {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d", i, o, l, skip, sn, ps)
+			}
+		}
+
+	}
+
+	// Multipart object tests
+	var (
+		// make a multipart object-info given part sizes
+		mkMPObj = func(sizes []int64) ObjectInfo {
+			r := make([]ObjectPartInfo, len(sizes))
+			sum := int64(0)
+			for i, s := range sizes {
+				r[i].Number = i
+				r[i].Size = int64(getEncSize(s))
+				sum += r[i].Size
+			}
+			return ObjectInfo{
+				Size:        sum,
+				UserDefined: udMap(true),
+				Parts:       r,
+			}
+		}
+		// Simple useful utilities
+		repeat = func(k int64, n int) []int64 {
+			a := []int64{}
+			for i := 0; i < n; i++ {
+				a = append(a, k)
+			}
+			return a
+		}
+		lsum = func(s []int64) int64 {
+			sum := int64(0)
+			for _, i := range s {
+				if i < 0 {
+					return -1
+				}
+				sum += i
+			}
+			return sum
+		}
+		esum = func(oi ObjectInfo) int64 {
+			sum := int64(0)
+			for _, i := range oi.Parts {
+				sum += i.Size
+			}
+			return sum
+		}
+	)
+
+	s1 := []int64{5487701, 5487799, 3}
+	s2 := repeat(5487701, 5)
+	s3 := repeat(maxPartSz, 10000)
+	testMPs := []struct {
+		decSizes []int64
+		oi       ObjectInfo
+	}{
+		{s1, mkMPObj(s1)},
+		{s2, mkMPObj(s2)},
+		{s3, mkMPObj(s3)},
+	}
+
+	// This function is a reference (re-)implementation of
+	// decrypted range computation, written solely for the purpose
+	// of the unit tests.
+	//
+	// `s` gives the decrypted part sizes, and the other
+	// parameters describe the desired read segment. When
+	// `isFromEnd` is true, `skipLen` argument is ignored.
+	decryptedRangeRef := func(s []int64, skipLen, readLen int64, isFromEnd bool) (o, l, skip int64, sn uint32, ps int) {
+		oSize := lsum(s)
+		if isFromEnd {
+			skipLen = oSize - readLen
+		}
+		if skipLen < 0 || readLen < 0 || oSize < 0 || skipLen+readLen > oSize {
+			t.Fatalf("Impossible read specified: %d %d %d", skipLen, readLen, oSize)
+		}
+
+		var cumulativeSum, cumulativeEncSum int64
+		toRead := readLen
+		readStart := false
+		for i, v := range s {
+			partOffset := int64(0)
+			partDarePkgOffset := int64(0)
+			if !readStart && cumulativeSum+v > skipLen {
+				// Read starts at the current part
+				readStart = true
+
+				partOffset = skipLen - cumulativeSum
+
+				// All return values except `l` are
+				// calculated here.
+				sn = uint32(partOffset / pkgSz)
+				skip = partOffset % pkgSz
+				ps = i
+				o = cumulativeEncSum + int64(sn)*(pkgSz+32)
+
+				partDarePkgOffset = partOffset - skip
+			}
+			if readStart {
+				currentPartBytes := v - partOffset
+				currentPartDareBytes := v - partDarePkgOffset
+				if currentPartBytes < toRead {
+					toRead -= currentPartBytes
+					l += getEncSize(currentPartDareBytes)
+				} else {
+					// current part has the last
+					// byte required
+					lbPartOffset := partOffset + toRead - 1
+
+					// round up the lbPartOffset
+					// to the end of the
+					// corresponding DARE package
+					lbPkgEndOffset := lbPartOffset - (lbPartOffset % pkgSz) + pkgSz
+					if lbPkgEndOffset > v {
+						lbPkgEndOffset = v
+					}
+					bytesToDrop := v - lbPkgEndOffset
+
+					// Last segment to update `l`
+					l += getEncSize(currentPartDareBytes - bytesToDrop)
+					break
+				}
+			}
+
+			cumulativeSum += v
+			cumulativeEncSum += getEncSize(v)
+		}
+		return
+	}
+
+	for i, test := range testMPs {
+		{
+			// nil range
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(nil)
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+			if o != 0 || l != esum(test.oi) || skip != 0 || sn != 0 || ps != 0 {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d", i, o, l, skip, sn, ps)
+			}
+		}
+
+		// Skip 1Mib and read 1Mib (in the decrypted object)
+		//
+		// The check below ensures the object is large enough
+		// for the read.
+		if lsum(test.decSizes) >= 2*humanize.MiByte {
+			skipLen, readLen := int64(1)*humanize.MiByte, int64(1)*humanize.MiByte
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(&HTTPRangeSpec{false, skipLen, skipLen + readLen - 1})
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+
+			oRef, lRef, skipRef, snRef, psRef := decryptedRangeRef(test.decSizes, skipLen, readLen, false)
+			if o != oRef || l != lRef || skip != skipRef || sn != snRef || ps != psRef {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d (Ref: %d %d %d %d %d)",
+					i, o, l, skip, sn, ps, oRef, lRef, skipRef, snRef, psRef)
+			}
+		}
+
+		// Read the last 6Mib+1 bytes of the (decrypted)
+		// object
+		//
+		// The check below ensures the object is large enough
+		// for the read.
+		readLen := int64(6)*humanize.MiByte + 1
+		if lsum(test.decSizes) >= readLen {
+			o, l, skip, sn, ps, err := test.oi.GetDecryptedRange(&HTTPRangeSpec{true, -readLen, -1})
+			if err != nil {
+				t.Errorf("Case %d: unexpected err: %v", i, err)
+			}
+
+			oRef, lRef, skipRef, snRef, psRef := decryptedRangeRef(test.decSizes, 0, readLen, true)
+			if o != oRef || l != lRef || skip != skipRef || sn != snRef || ps != psRef {
+				t.Errorf("Case %d: test failed: %d %d %d %d %d (Ref: %d %d %d %d %d)",
+					i, o, l, skip, sn, ps, oRef, lRef, skipRef, snRef, psRef)
+			}
+		}
+
+	}
+}
+
+var getDefaultOptsTests = []struct {
+	headers        http.Header
+	copySource     bool
+	metadata       map[string]string
+	encryptionType encrypt.Type
+	err            error
+}{
+	{headers: http.Header{crypto.SSECAlgorithm: []string{"AES256"},
+		crypto.SSECKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+		crypto.SSECKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		copySource:     false,
+		metadata:       nil,
+		encryptionType: encrypt.SSEC,
+		err:            nil}, // 0
+	{headers: http.Header{crypto.SSECAlgorithm: []string{"AES256"},
+		crypto.SSECKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+		crypto.SSECKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		copySource:     true,
+		metadata:       nil,
+		encryptionType: "",
+		err:            nil}, // 1
+	{headers: http.Header{crypto.SSECAlgorithm: []string{"AES256"},
+		crypto.SSECKey:    []string{"Mz"},
+		crypto.SSECKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		copySource:     false,
+		metadata:       nil,
+		encryptionType: "",
+		err:            crypto.ErrInvalidCustomerKey}, // 2
+	{headers: http.Header{crypto.SSEHeader: []string{"AES256"}},
+		copySource:     false,
+		metadata:       nil,
+		encryptionType: encrypt.S3,
+		err:            nil}, // 3
+	{headers: http.Header{},
+		copySource: false,
+		metadata: map[string]string{crypto.S3SealedKey: base64.StdEncoding.EncodeToString(make([]byte, 64)),
+			crypto.S3KMSKeyID:     "kms-key",
+			crypto.S3KMSSealedKey: "m-key"},
+		encryptionType: encrypt.S3,
+		err:            nil}, // 4
+	{headers: http.Header{},
+		copySource: true,
+		metadata: map[string]string{crypto.S3SealedKey: base64.StdEncoding.EncodeToString(make([]byte, 64)),
+			crypto.S3KMSKeyID:     "kms-key",
+			crypto.S3KMSSealedKey: "m-key"},
+		encryptionType: "",
+		err:            nil}, // 5
+	{headers: http.Header{crypto.SSECopyAlgorithm: []string{"AES256"},
+		crypto.SSECopyKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+		crypto.SSECopyKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		copySource:     true,
+		metadata:       nil,
+		encryptionType: encrypt.SSEC,
+		err:            nil}, // 6
+	{headers: http.Header{crypto.SSECopyAlgorithm: []string{"AES256"},
+		crypto.SSECopyKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+		crypto.SSECopyKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		copySource:     false,
+		metadata:       nil,
+		encryptionType: "",
+		err:            nil}, // 7
+}
+
+func TestGetDefaultOpts(t *testing.T) {
+	for i, test := range getDefaultOptsTests {
+		opts, err := getDefaultOpts(test.headers, test.copySource, test.metadata)
+		if test.err != err {
+			t.Errorf("Case %d: expected err: %v , actual err: %v", i, test.err, err)
+		}
+		if err == nil {
+			if opts.ServerSideEncryption == nil && test.encryptionType != "" {
+				t.Errorf("Case %d: expected opts to be of %v encryption type", i, test.encryptionType)
+
+			}
+			if opts.ServerSideEncryption != nil && test.encryptionType != opts.ServerSideEncryption.Type() {
+				t.Errorf("Case %d: expected opts to have encryption type %v but was %v ", i, test.encryptionType, opts.ServerSideEncryption.Type())
+			}
+		}
+	}
+}

cmd/endpoint-ellipses.go

@@ -18,6 +18,8 @@ package cmd
 
 import (
 	"fmt"
+	"os"
+	"strconv"
 	"strings"
 
 	"github.com/minio/minio-go/pkg/set"
@@ -69,10 +71,26 @@ func getSetIndexes(args []string, totalSizes []uint64) (setIndexes [][]uint64, e
 		return nil, errInvalidArgument
 	}
 
+	// isValidSetSize - checks whether given count is a valid set size for erasure coding.
+	isValidSetSize := func(count uint64) bool {
+		return (count >= setSizes[0] && count <= setSizes[len(setSizes)-1] && count%2 == 0)
+	}
+
+	var customSetDriveCount uint64
+	if v := os.Getenv("MINIO_ERASURE_SET_DRIVE_COUNT"); v != "" {
+		customSetDriveCount, err = strconv.ParseUint(v, 10, 64)
+		if err != nil {
+			return nil, uiErrInvalidErasureSetSize(err)
+		}
+		if !isValidSetSize(customSetDriveCount) {
+			return nil, uiErrInvalidErasureSetSize(nil)
+		}
+	}
+
 	setIndexes = make([][]uint64, len(totalSizes))
 	for _, totalSize := range totalSizes {
 		// Check if totalSize has minimum range upto setSize
-		if totalSize < setSizes[0] {
+		if totalSize < setSizes[0] || totalSize < customSetDriveCount {
 			return nil, uiErrInvalidNumberOfErasureEndpoints(nil)
 		}
 	}
@@ -95,9 +113,24 @@ func getSetIndexes(args []string, totalSizes []uint64) (setIndexes [][]uint64, e
 		setSize = commonSize
 	}
 
-	// isValidSetSize - checks whether given count is a valid set size for erasure coding.
-	isValidSetSize := func(count uint64) bool {
-		return (count >= setSizes[0] && count <= setSizes[len(setSizes)-1] && count%2 == 0)
+	possibleSetCounts := func(setSize uint64) (ss []uint64) {
+		for _, s := range setSizes {
+			if setSize%s == 0 {
+				ss = append(ss, s)
+			}
+		}
+		return ss
+	}
+
+	if customSetDriveCount > 0 {
+		msg := fmt.Sprintf("Invalid set drive count, leads to non-uniform distribution for the given number of disks. Possible values for custom set count are %d", possibleSetCounts(setSize))
+		if customSetDriveCount > setSize {
+			return nil, uiErrInvalidErasureSetSize(nil).Msg(msg)
+		}
+		if setSize%customSetDriveCount != 0 {
+			return nil, uiErrInvalidErasureSetSize(nil).Msg(msg)
+		}
+		setSize = customSetDriveCount
 	}
 
 	// Check whether setSize is with the supported range.

cmd/endpoint-ellipses_test.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"fmt"
+	"os"
 	"reflect"
 	"testing"
 
@@ -84,6 +85,65 @@ func TestGetDivisibleSize(t *testing.T) {
 	}
 }
 
+// Test tests calculating set indexes with ENV override for drive count.
+func TestGetSetIndexesEnvOverride(t *testing.T) {
+	testCases := []struct {
+		args        []string
+		totalSizes  []uint64
+		indexes     [][]uint64
+		envOverride string
+		success     bool
+	}{
+		{
+			[]string{"data{1...64}"},
+			[]uint64{64},
+			[][]uint64{{8, 8, 8, 8, 8, 8, 8, 8}},
+			"8",
+			true,
+		},
+		{
+			[]string{"data{1...60}"},
+			nil,
+			nil,
+			"8",
+			false,
+		},
+		{
+			[]string{"data{1...64}"},
+			nil,
+			nil,
+			"-1",
+			false,
+		},
+		{
+			[]string{"data{1...64}"},
+			nil,
+			nil,
+			"2",
+			false,
+		},
+	}
+
+	for i, testCase := range testCases {
+		t.Run(fmt.Sprintf("Test%d", i+1), func(t *testing.T) {
+			if err := os.Setenv("MINIO_ERASURE_SET_DRIVE_COUNT", testCase.envOverride); err != nil {
+				t.Fatal(err)
+			}
+			gotIndexes, err := getSetIndexes(testCase.args, testCase.totalSizes)
+			if err != nil && testCase.success {
+				t.Errorf("Expected success but failed instead %s", err)
+			}
+			if err == nil && !testCase.success {
+				t.Errorf("Expected failure but passed instead")
+			}
+			if !reflect.DeepEqual(testCase.indexes, gotIndexes) {
+				t.Errorf("Expected %v, got %v", testCase.indexes, gotIndexes)
+			}
+			os.Unsetenv("MINIO_ERASURE_SET_DRIVE_COUNT")
+		})
+	}
+}
+
 // Test tests calculating set indexes.
 func TestGetSetIndexes(t *testing.T) {
 	testCases := []struct {
@@ -166,6 +226,17 @@ func TestGetSetIndexes(t *testing.T) {
 	}
 }
 
+func getHexSequences(start int, number int, paddinglen int) (seq []string) {
+	for i := start; i <= number; i++ {
+		if paddinglen == 0 {
+			seq = append(seq, fmt.Sprintf("%x", i))
+		} else {
+			seq = append(seq, fmt.Sprintf(fmt.Sprintf("%%0%dx", paddinglen), i))
+		}
+	}
+	return seq
+}
+
 func getSequences(start int, number int, paddinglen int) (seq []string) {
 	for i := start; i <= number; i++ {
 		if paddinglen == 0 {
@@ -227,9 +298,9 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"/export/set",
-							"",
-							getSequences(1, 64, 0),
+							Prefix: "/export/set",
+							Suffix: "",
+							Seq:    getSequences(1, 64, 0),
 						},
 					},
 				},
@@ -245,14 +316,14 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"",
-							"",
-							getSequences(1, 64, 0),
+							Prefix: "",
+							Suffix: "",
+							Seq:    getSequences(1, 64, 0),
 						},
 						{
-							"http://minio",
-							"/export/set",
-							getSequences(2, 3, 0),
+							Prefix: "http://minio",
+							Suffix: "/export/set",
+							Seq:    getSequences(2, 3, 0),
 						},
 					},
 				},
@@ -268,9 +339,9 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"http://minio",
-							".mydomain.net/data",
-							getSequences(1, 64, 0),
+							Prefix: "http://minio",
+							Suffix: ".mydomain.net/data",
+							Seq:    getSequences(1, 64, 0),
 						},
 					},
 				},
@@ -285,14 +356,14 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"",
-							"/data",
-							getSequences(1, 16, 0),
+							Prefix: "",
+							Suffix: "/data",
+							Seq:    getSequences(1, 16, 0),
 						},
 						{
-							"http://rack",
-							".mydomain.minio",
-							getSequences(1, 4, 0),
+							Prefix: "http://rack",
+							Suffix: ".mydomain.minio",
+							Seq:    getSequences(1, 4, 0),
 						},
 					},
 				},
@@ -308,14 +379,14 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"",
-							"",
-							getSequences(0, 1, 0),
+							Prefix: "",
+							Suffix: "",
+							Seq:    getSequences(0, 1, 0),
 						},
 						{
-							"http://minio",
-							".mydomain.net/data",
-							getSequences(0, 15, 0),
+							Prefix: "http://minio",
+							Suffix: ".mydomain.net/data",
+							Seq:    getSequences(0, 15, 0),
 						},
 					},
 				},
@@ -331,9 +402,9 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"http://server1/data",
-							"",
-							getSequences(1, 32, 0),
+							Prefix: "http://server1/data",
+							Suffix: "",
+							Seq:    getSequences(1, 32, 0),
 						},
 					},
 				},
@@ -349,9 +420,9 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"http://server1/data",
-							"",
-							getSequences(1, 32, 2),
+							Prefix: "http://server1/data",
+							Suffix: "",
+							Seq:    getSequences(1, 32, 2),
 						},
 					},
 				},
@@ -367,19 +438,19 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"",
-							"",
-							getSequences(1, 2, 0),
+							Prefix: "",
+							Suffix: "",
+							Seq:    getSequences(1, 2, 0),
 						},
 						{
-							"",
-							"/test",
-							getSequences(1, 64, 0),
+							Prefix: "",
+							Suffix: "/test",
+							Seq:    getSequences(1, 64, 0),
 						},
 						{
-							"http://minio",
-							"/export/set",
-							getSequences(2, 3, 0),
+							Prefix: "http://minio",
+							Suffix: "/export/set",
+							Seq:    getSequences(2, 3, 0),
 						},
 					},
 				},
@@ -396,14 +467,60 @@ func TestParseEndpointSet(t *testing.T) {
 				[]ellipses.ArgPattern{
 					[]ellipses.Pattern{
 						{
-							"",
-							"",
-							getSequences(1, 10, 0),
+							Prefix: "",
+							Suffix: "",
+							Seq:    getSequences(1, 10, 0),
 						},
 						{
-							"/export",
-							"/disk",
-							getSequences(1, 10, 0),
+							Prefix: "/export",
+							Suffix: "/disk",
+							Seq:    getSequences(1, 10, 0),
+						},
+					},
+				},
+				nil,
+				[][]uint64{{10, 10, 10, 10, 10, 10, 10, 10, 10, 10}},
+			},
+			true,
+		},
+		// IPv6 ellipses with hexadecimal expansion
+		{
+			"http://[2001:3984:3989::{1...a}]/disk{1...10}",
+			endpointSet{
+				[]ellipses.ArgPattern{
+					[]ellipses.Pattern{
+						{
+							Prefix: "",
+							Suffix: "",
+							Seq:    getSequences(1, 10, 0),
+						},
+						{
+							Prefix: "http://[2001:3984:3989::",
+							Suffix: "]/disk",
+							Seq:    getHexSequences(1, 10, 0),
+						},
+					},
+				},
+				nil,
+				[][]uint64{{10, 10, 10, 10, 10, 10, 10, 10, 10, 10}},
+			},
+			true,
+		},
+		// IPv6 ellipses with hexadecimal expansion with 3 position numerics.
+		{
+			"http://[2001:3984:3989::{001...00a}]/disk{1...10}",
+			endpointSet{
+				[]ellipses.ArgPattern{
+					[]ellipses.Pattern{
+						{
+							Prefix: "",
+							Suffix: "",
+							Seq:    getSequences(1, 10, 0),
+						},
+						{
+							Prefix: "http://[2001:3984:3989::",
+							Suffix: "]/disk",
+							Seq:    getHexSequences(1, 10, 3),
 						},
 					},
 				},