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minio/cmd/bucket-encryption-handlers.go

179 lines
5.5 KiB

/*
* 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"
"fmt"
"io"
"net/http"
"github.com/gorilla/mux"
"github.com/minio/minio/cmd/logger"
"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(ctx, w, r, mustGetClaimsFromToken(r))
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if !objAPI.IsEncryptionSupported() {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), 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
}
// 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, guessIsBrowserReq(r))
return
}
// Return error if KMS is not initialized
if GlobalKMS == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrKMSNotConfigured), r.URL, guessIsBrowserReq(r))
return
}
configData, err := xml.Marshal(encConfig)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Store the bucket encryption configuration in the object layer
if err = globalBucketMetadataSys.Update(bucket, bucketSSEConfig, configData); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
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, 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
}
config, err := globalBucketMetadataSys.GetSSEConfig(bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
configData, err := xml.Marshal(config)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
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, 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 = globalBucketMetadataSys.Update(bucket, bucketSSEConfig, nil); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
writeSuccessNoContent(w)
}