a8c07c0969
This PR adds support to connect MCS to minio instances running TLS with self-signed certificates or certificates signed by custom Certificate Authorities ``` export MCS_MINIO_SERVER_TLS_ROOT_CAS=file1,file2,file3 ``` Note: TLS Skip Verification is not supported unless there's a clear need for it
96 lines
3.2 KiB
Go
96 lines
3.2 KiB
Go
// This file is part of MinIO Orchestrator
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// Copyright (c) 2020 MinIO, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package restapi
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import (
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"crypto/tls"
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"crypto/x509"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"time"
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)
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var (
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certDontExists = "File certificate doesn't exists: %s"
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)
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func prepareSTSClientTransport() *http.Transport {
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// This takes github.com/minio/minio/pkg/madmin/transport.go as an example
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//
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// DefaultTransport - this default transport is similar to
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// http.DefaultTransport but with additional param DisableCompression
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// is set to true to avoid decompressing content with 'gzip' encoding.
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DefaultTransport := &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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DialContext: (&net.Dialer{
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Timeout: 5 * time.Second,
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KeepAlive: 15 * time.Second,
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}).DialContext,
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MaxIdleConns: 1024,
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MaxIdleConnsPerHost: 1024,
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ResponseHeaderTimeout: 60 * time.Second,
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IdleConnTimeout: 60 * time.Second,
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TLSHandshakeTimeout: 10 * time.Second,
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ExpectContinueTimeout: 1 * time.Second,
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DisableCompression: true,
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}
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// If Minio instance is running with TLS enabled and it's using a self-signed certificate
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// or a certificate issued by a custom certificate authority we prepare a new custom *http.Transport
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if getMinIOEndpointIsSecure() {
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caCertFileNames := getMinioServerTLSRootCAs()
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tlsConfig := &tls.Config{
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// Can't use SSLv3 because of POODLE and BEAST
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// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
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// Can't use TLSv1.1 because of RC4 cipher usage
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MinVersion: tls.VersionTLS12,
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}
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// If root CAs are configured we save them to the http.Client RootCAs store
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if len(caCertFileNames) > 0 {
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certs := x509.NewCertPool()
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for _, caCert := range caCertFileNames {
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// Validate certificate exists
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if FileExists(caCert) {
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pemData, err := ioutil.ReadFile(caCert)
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if err != nil {
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// if there was an error reading pem file stop mcs
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panic(err)
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}
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certs.AppendCertsFromPEM(pemData)
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} else {
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// if provided cert filename doesn't exists stop mcs
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panic(fmt.Sprintf(certDontExists, caCert))
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}
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}
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tlsConfig.RootCAs = certs
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}
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DefaultTransport.TLSClientConfig = tlsConfig
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}
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return DefaultTransport
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}
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// PrepareSTSClient returns an http.Client with custom configurations need it by *credentials.STSAssumeRole
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// custom configurations include skipVerification flag, and root CA certificates
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func PrepareSTSClient() *http.Client {
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transport := prepareSTSClientTransport()
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// Return http client with default configuration
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return &http.Client{
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Transport: transport,
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}
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}
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