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https://github.com/versity/versitygw.git
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5ae791b154
Closes #1847 This PR introduces a global optional gateway CLI flag `--disable-acl` (`VGW_DISABLE_ACL`) to disable ACL handling. When this flag is enabled, the gateway ignores all ACL-related headers, particularly in `CreateBucket`, `PutObject`, `CopyObject`, and `CreateMultipartUpload`. `GetBucketAcl` behavior is unchanged simply returning the bucket ACL config. There's no change in object ACL actions(`PutObjectACL`, `GetObjectACL`). They return a`NotImplemented` error as before. A new custom error is added for PutBucketAcl calls when ACLs are disabled at the gateway level. Its HTTP status code and error code match AWS S3’s behavior, with only a slightly different error message. In the access-control checker, ACL evaluation is fully bypassed. If ACLs are disabled only the bucket owner gets access to the bucket and all grantee checks are ignored. The PR also includes minor refactoring of the S3 API server and router. The growing list of parameters passed to the router’s Init method has been consolidated into fields within the router struct, initialized during router construction. Parameters not needed by the S3 server are no longer stored in the server configuration and are instead forwarded directly to the router.
385 lines
11 KiB
Go
385 lines
11 KiB
Go
// Copyright 2023 Versity Software
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// This file is licensed under the Apache License, Version 2.0
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// (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package controllers
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import (
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"encoding/xml"
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"fmt"
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"strconv"
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"strings"
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"github.com/aws/aws-sdk-go-v2/service/s3"
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"github.com/aws/aws-sdk-go-v2/service/s3/types"
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"github.com/gofiber/fiber/v2"
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"github.com/versity/versitygw/auth"
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"github.com/versity/versitygw/debuglogger"
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"github.com/versity/versitygw/s3api/utils"
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"github.com/versity/versitygw/s3err"
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"github.com/versity/versitygw/s3event"
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"github.com/versity/versitygw/s3response"
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)
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func (c S3ApiController) RestoreObject(ctx *fiber.Ctx) (*Response, error) {
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bucket := ctx.Params("bucket")
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key := strings.TrimPrefix(ctx.Path(), fmt.Sprintf("/%s/", bucket))
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acct := utils.ContextKeyAccount.Get(ctx).(auth.Account)
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isRoot := utils.ContextKeyIsRoot.Get(ctx).(bool)
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isBucketPublic := utils.ContextKeyPublicBucket.IsSet(ctx)
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parsedAcl := utils.ContextKeyParsedAcl.Get(ctx).(auth.ACL)
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err := auth.VerifyAccess(ctx.Context(), c.be,
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auth.AccessOptions{
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Readonly: c.readonly,
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Acl: parsedAcl,
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AclPermission: auth.PermissionWrite,
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IsRoot: isRoot,
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Acc: acct,
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Bucket: bucket,
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Object: key,
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Action: auth.RestoreObjectAction,
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IsPublicRequest: isBucketPublic,
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DisableACL: c.disableACL,
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})
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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var restoreRequest types.RestoreRequest
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if err := xml.Unmarshal(ctx.Body(), &restoreRequest); err != nil {
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debuglogger.Logf("failed to parse the request body: %v", err)
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, s3err.GetAPIError(s3err.ErrMalformedXML)
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}
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err = c.be.RestoreObject(ctx.Context(), &s3.RestoreObjectInput{
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Bucket: &bucket,
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Key: &key,
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RestoreRequest: &restoreRequest,
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})
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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EventName: s3event.EventObjectRestoreCompleted,
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},
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}, err
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}
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func (c S3ApiController) SelectObjectContent(ctx *fiber.Ctx) (*Response, error) {
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bucket := ctx.Params("bucket")
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key := strings.TrimPrefix(ctx.Path(), fmt.Sprintf("/%s/", bucket))
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acct := utils.ContextKeyAccount.Get(ctx).(auth.Account)
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isRoot := utils.ContextKeyIsRoot.Get(ctx).(bool)
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isBucketPublic := utils.ContextKeyPublicBucket.IsSet(ctx)
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parsedAcl := utils.ContextKeyParsedAcl.Get(ctx).(auth.ACL)
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err := auth.VerifyAccess(ctx.Context(), c.be,
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auth.AccessOptions{
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Readonly: c.readonly,
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Acl: parsedAcl,
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AclPermission: auth.PermissionRead,
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IsRoot: isRoot,
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Acc: acct,
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Bucket: bucket,
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Object: key,
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Action: auth.GetObjectAction,
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IsPublicRequest: isBucketPublic,
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DisableACL: c.disableACL,
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})
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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var payload s3response.SelectObjectContentPayload
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err = xml.Unmarshal(ctx.Body(), &payload)
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if err != nil {
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debuglogger.Logf("error unmarshalling select object content: %v", err)
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, s3err.GetAPIError(s3err.ErrMalformedXML)
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}
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sw := c.be.SelectObjectContent(ctx.Context(),
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&s3.SelectObjectContentInput{
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Bucket: &bucket,
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Key: &key,
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Expression: payload.Expression,
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ExpressionType: payload.ExpressionType,
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InputSerialization: payload.InputSerialization,
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OutputSerialization: payload.OutputSerialization,
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RequestProgress: payload.RequestProgress,
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ScanRange: payload.ScanRange,
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})
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ctx.Context().SetBodyStreamWriter(sw)
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, nil
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}
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func (c S3ApiController) CreateMultipartUpload(ctx *fiber.Ctx) (*Response, error) {
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bucket := ctx.Params("bucket")
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key := strings.TrimPrefix(ctx.Path(), fmt.Sprintf("/%s/", bucket))
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contentType := ctx.Get("Content-Type", defaultContentType)
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contentDisposition := ctx.Get("Content-Disposition")
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contentLanguage := ctx.Get("Content-Language")
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cacheControl := ctx.Get("Cache-Control")
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contentEncoding := ctx.Get("Content-Encoding")
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tagging := ctx.Get("X-Amz-Tagging")
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expires := ctx.Get("Expires")
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metadata := utils.GetUserMetaData(&ctx.Request().Header)
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// context locals
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acct := utils.ContextKeyAccount.Get(ctx).(auth.Account)
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isRoot := utils.ContextKeyIsRoot.Get(ctx).(bool)
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parsedAcl := utils.ContextKeyParsedAcl.Get(ctx).(auth.ACL)
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err := utils.ValidateNoACLHeaders(ctx, c.disableACL)
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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err = auth.VerifyAccess(ctx.Context(), c.be,
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auth.AccessOptions{
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Readonly: c.readonly,
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Acl: parsedAcl,
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AclPermission: auth.PermissionWrite,
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IsRoot: isRoot,
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Acc: acct,
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Bucket: bucket,
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Object: key,
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Action: auth.PutObjectAction,
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DisableACL: c.disableACL,
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})
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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objLockState, err := utils.ParsObjectLockHdrs(ctx)
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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checksumAlgorithm, checksumType, err := utils.ParseCreateMpChecksumHeaders(ctx)
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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res, err := c.be.CreateMultipartUpload(ctx.Context(),
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s3response.CreateMultipartUploadInput{
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Bucket: &bucket,
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Key: &key,
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Tagging: &tagging,
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ContentType: &contentType,
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ContentEncoding: &contentEncoding,
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ContentDisposition: &contentDisposition,
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ContentLanguage: &contentLanguage,
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CacheControl: &cacheControl,
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Expires: &expires,
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ObjectLockRetainUntilDate: &objLockState.RetainUntilDate,
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ObjectLockMode: objLockState.ObjectLockMode,
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ObjectLockLegalHoldStatus: objLockState.LegalHoldStatus,
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Metadata: metadata,
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ChecksumAlgorithm: checksumAlgorithm,
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ChecksumType: checksumType,
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})
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var headers map[string]*string
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if err == nil {
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headers = map[string]*string{
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"x-amz-checksum-algorithm": utils.ConvertToStringPtr(checksumAlgorithm),
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"x-amz-checksum-type": utils.ConvertToStringPtr(checksumType),
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}
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}
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return &Response{
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Headers: headers,
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Data: res,
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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func (c S3ApiController) CompleteMultipartUpload(ctx *fiber.Ctx) (*Response, error) {
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bucket := ctx.Params("bucket")
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key := strings.TrimPrefix(ctx.Path(), fmt.Sprintf("/%s/", bucket))
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uploadId := ctx.Query("uploadId")
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mpuObjSizeHdr := ctx.Get("X-Amz-Mp-Object-Size")
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checksumType := types.ChecksumType(strings.ToUpper(ctx.Get("x-amz-checksum-type")))
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// context locals
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acct := utils.ContextKeyAccount.Get(ctx).(auth.Account)
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isRoot := utils.ContextKeyIsRoot.Get(ctx).(bool)
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isBucketPublic := utils.ContextKeyPublicBucket.IsSet(ctx)
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parsedAcl := utils.ContextKeyParsedAcl.Get(ctx).(auth.ACL)
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err := auth.VerifyAccess(ctx.Context(), c.be,
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auth.AccessOptions{
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Readonly: c.readonly,
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Acl: parsedAcl,
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AclPermission: auth.PermissionWrite,
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IsRoot: isRoot,
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Acc: acct,
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Bucket: bucket,
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Object: key,
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Action: auth.PutObjectAction,
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IsPublicRequest: isBucketPublic,
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DisableACL: c.disableACL,
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})
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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var body s3response.CompleteMultipartUploadRequestBody
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err = xml.Unmarshal(ctx.Body(), &body)
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if err != nil {
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debuglogger.Logf("error unmarshalling complete multipart upload: %v", err)
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, s3err.GetAPIError(s3err.ErrMalformedXML)
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}
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if len(body.Parts) == 0 {
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debuglogger.Logf("empty parts provided for complete multipart upload")
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, s3err.GetAPIError(s3err.ErrMalformedXML)
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}
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var mpuObjectSize *int64
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if mpuObjSizeHdr != "" {
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val, err := strconv.ParseInt(mpuObjSizeHdr, 10, 64)
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if err != nil {
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debuglogger.Logf("invalid value for 'x-amz-mp-object-size' header: %v", err)
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, s3err.GetInvalidMpObjectSizeErr(mpuObjSizeHdr)
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}
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if val < 0 {
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debuglogger.Logf("value for 'x-amz-mp-object-size' header is less than 0: %v", val)
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, s3err.GetNegatvieMpObjectSizeErr(val)
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}
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mpuObjectSize = &val
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}
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checksums, err := utils.ParseCompleteMpChecksumHeaders(ctx)
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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err = utils.IsChecksumTypeValid(checksumType)
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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ifMatch, ifNoneMatch := utils.ParsePreconditionMatchHeaders(ctx)
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err = auth.CheckObjectAccess(ctx.Context(), bucket, acct.Access, []types.ObjectIdentifier{{Key: &key}}, true, isBucketPublic, c.be, true)
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if err != nil {
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return &Response{
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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},
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}, err
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}
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res, versid, err := c.be.CompleteMultipartUpload(ctx.Context(),
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&s3.CompleteMultipartUploadInput{
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Bucket: &bucket,
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Key: &key,
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UploadId: &uploadId,
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MultipartUpload: &types.CompletedMultipartUpload{
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Parts: body.Parts,
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},
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MpuObjectSize: mpuObjectSize,
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ChecksumCRC32: utils.GetStringPtr(checksums[types.ChecksumAlgorithmCrc32]),
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ChecksumCRC32C: utils.GetStringPtr(checksums[types.ChecksumAlgorithmCrc32c]),
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ChecksumSHA1: utils.GetStringPtr(checksums[types.ChecksumAlgorithmSha1]),
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ChecksumSHA256: utils.GetStringPtr(checksums[types.ChecksumAlgorithmSha256]),
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ChecksumCRC64NVME: utils.GetStringPtr(checksums[types.ChecksumAlgorithmCrc64nvme]),
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ChecksumType: checksumType,
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IfMatch: ifMatch,
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IfNoneMatch: ifNoneMatch,
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})
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if err == nil {
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objUrl := utils.GenerateObjectLocation(ctx, c.virtualDomain, bucket, key)
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res.Location = &objUrl
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}
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return &Response{
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Data: res,
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Headers: map[string]*string{
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"x-amz-version-id": &versid,
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},
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MetaOpts: &MetaOptions{
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BucketOwner: parsedAcl.Owner,
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ObjectETag: res.ETag,
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EventName: s3event.EventCompleteMultipartUpload,
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VersionId: &versid,
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},
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}, err
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}
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