minio/cmd/bucket-encryption-handlers.go
Poorna 3a64580663
Add support for site replication healing (#14572)
heal bucket metadata and IAM entries for
sites participating in site replication from
the site with the most updated entry.

Co-authored-by: Harshavardhana <harsha@minio.io>
Co-authored-by: Aditya Manthramurthy <aditya@minio.io>
2022-04-24 02:36:31 -07:00

221 lines
6.5 KiB
Go

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"encoding/base64"
"encoding/xml"
"errors"
"fmt"
"io"
"net/http"
"github.com/gorilla/mux"
"github.com/minio/kes"
"github.com/minio/madmin-go"
"github.com/minio/minio/internal/kms"
"github.com/minio/minio/internal/logger"
"github.com/minio/pkg/bucket/policy"
)
const (
// Bucket Encryption configuration file name.
bucketSSEConfig = "bucket-encryption.xml"
)
// PutBucketEncryptionHandler - Stores given bucket encryption configuration
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketEncryption.html
func (api objectAPIHandlers) PutBucketEncryptionHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutBucketEncryption")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
if !objAPI.IsEncryptionSupported() {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketEncryptionAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket exists.
if _, err := objAPI.GetBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Parse bucket encryption xml
encConfig, err := validateBucketSSEConfig(io.LimitReader(r.Body, maxBucketSSEConfigSize))
if err != nil {
apiErr := APIError{
Code: "MalformedXML",
Description: fmt.Sprintf("%s (%s)", errorCodes[ErrMalformedXML].Description, err),
HTTPStatusCode: errorCodes[ErrMalformedXML].HTTPStatusCode,
}
writeErrorResponse(ctx, w, apiErr, r.URL)
return
}
// Return error if KMS is not initialized
if GlobalKMS == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL)
return
}
kmsKey := encConfig.KeyID()
if kmsKey != "" {
kmsContext := kms.Context{"MinIO admin API": "ServerInfoHandler"} // Context for a test key operation
_, err := GlobalKMS.GenerateKey(kmsKey, kmsContext)
if err != nil {
if errors.Is(err, kes.ErrKeyNotFound) {
writeErrorResponse(ctx, w, toAPIError(ctx, errKMSKeyNotFound), r.URL)
return
}
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
configData, err := xml.Marshal(encConfig)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Store the bucket encryption configuration in the object layer
if err = globalBucketMetadataSys.Update(ctx, bucket, bucketSSEConfig, configData); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Call site replication hook.
//
// We encode the xml bytes as base64 to ensure there are no encoding
// errors.
cfgStr := base64.StdEncoding.EncodeToString(configData)
if err = globalSiteReplicationSys.BucketMetaHook(ctx, madmin.SRBucketMeta{
Type: madmin.SRBucketMetaTypeSSEConfig,
Bucket: bucket,
SSEConfig: &cfgStr,
}); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
writeSuccessResponseHeadersOnly(w)
}
// GetBucketEncryptionHandler - Returns bucket policy configuration
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketEncryption.html
func (api objectAPIHandlers) GetBucketEncryptionHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetBucketEncryption")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketEncryptionAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket exists
var err error
if _, err = objAPI.GetBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
config, _, err := globalBucketMetadataSys.GetSSEConfig(bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
configData, err := xml.Marshal(config)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Write bucket encryption configuration to client
writeSuccessResponseXML(w, configData)
}
// DeleteBucketEncryptionHandler - Removes bucket encryption configuration
func (api objectAPIHandlers) DeleteBucketEncryptionHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "DeleteBucketEncryption")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketEncryptionAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket exists
var err error
if _, err = objAPI.GetBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Delete bucket encryption config from object layer
if err = globalBucketMetadataSys.Update(ctx, bucket, bucketSSEConfig, nil); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Call site replication hook.
//
if err = globalSiteReplicationSys.BucketMetaHook(ctx, madmin.SRBucketMeta{
Type: madmin.SRBucketMetaTypeSSEConfig,
Bucket: bucket,
SSEConfig: nil,
}); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
writeSuccessNoContent(w)
}