minio/cmd/bucket-encryption-handlers.go
Krishnan Parthasarathi 026265f8f7
Add support for bucket encryption feature (#8890)
- pkg/bucket/encryption provides support for handling bucket 
  encryption configuration
- changes under cmd/ provide support for AES256 algorithm only

Co-Authored-By: Poorna  <poornas@users.noreply.github.com>
Co-authored-by: Harshavardhana <harsha@minio.io>
2020-02-05 15:12:34 +05:30

181 lines
5.9 KiB
Go

/*
* MinIO Cloud Storage, (C) 2020 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"
"io"
"net/http"
"github.com/gorilla/mux"
"github.com/minio/minio/cmd/logger"
bucketsse "github.com/minio/minio/pkg/bucket/encryption"
"github.com/minio/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(w, r, "PutBucketEncryption", mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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, guessIsBrowserReq(r))
return
}
// Check if bucket exists.
if _, err := objAPI.GetBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// PutBucketEncyrption API requires Content-Md5
if _, ok := r.Header["Content-Md5"]; !ok {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentMD5), r.URL, guessIsBrowserReq(r))
return
}
// Parse bucket encryption xml
encConfig, err := validateBucketSSEConfig(io.LimitReader(r.Body, maxBucketSSEConfigSize))
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML), r.URL, guessIsBrowserReq(r))
return
}
// Return error if KMS is not initialized
if GlobalKMS == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL, guessIsBrowserReq(r))
return
}
// Store the bucket encryption configuration in the object layer
if err = objAPI.SetBucketSSEConfig(ctx, bucket, encConfig); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Update the in-memory bucket encryption cache
globalBucketSSEConfigSys.Set(bucket, *encConfig)
// Update peer MinIO servers of the updated bucket encryption config
globalNotificationSys.SetBucketSSEConfig(ctx, bucket, encConfig)
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(w, r, "GetBucketEncryption", mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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, guessIsBrowserReq(r))
return
}
// Check if bucket exists
var err error
if _, err = objAPI.GetBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Fetch bucket encryption configuration from object layer
var encConfig *bucketsse.BucketSSEConfig
if encConfig, err = objAPI.GetBucketSSEConfig(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
var encConfigData []byte
if encConfigData, err = xml.Marshal(encConfig); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Write bucket encryption configuration to client
writeSuccessResponseXML(w, encConfigData)
}
// DeleteBucketEncryptionHandler - Removes bucket encryption configuration
func (api objectAPIHandlers) DeleteBucketEncryptionHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "DeleteBucketEncryption")
defer logger.AuditLog(w, r, "DeleteBucketEncryption", mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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, guessIsBrowserReq(r))
return
}
// Check if bucket exists
var err error
if _, err = objAPI.GetBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Delete bucket encryption config from object layer
if err = objAPI.DeleteBucketSSEConfig(ctx, bucket); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Remove entry from the in-memory bucket encryption cache
globalBucketSSEConfigSys.Remove(bucket)
// Update peer MinIO servers of the updated bucket encryption config
globalNotificationSys.RemoveBucketSSEConfig(ctx, bucket)
writeSuccessNoContent(w)
}