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665 lines
19 KiB
665 lines
19 KiB
/*
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* Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"encoding/base64"
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"encoding/xml"
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"io"
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"net"
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"net/http"
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"net/url"
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"path"
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"path/filepath"
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"strings"
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"sync"
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"github.com/gorilla/mux"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/event"
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"github.com/minio/minio/pkg/hash"
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"github.com/minio/minio/pkg/policy"
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)
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// GetBucketLocationHandler - GET Bucket location.
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// -------------------------
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// This operation returns bucket location.
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func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "GetBucketLocation")
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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objectAPI := api.ObjectAPI()
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if objectAPI == nil {
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writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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return
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketLocationAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(w, s3Error, r.URL)
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return
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}
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bucketLock := globalNSMutex.NewNSLock(bucket, "")
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if err := bucketLock.GetRLock(globalObjectTimeout); err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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defer bucketLock.RUnlock()
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getBucketInfo := objectAPI.GetBucketInfo
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if api.CacheAPI() != nil {
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getBucketInfo = api.CacheAPI().GetBucketInfo
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}
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if _, err := getBucketInfo(ctx, bucket); err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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// Generate response.
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encodedSuccessResponse := encodeResponse(LocationResponse{})
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// Get current region.
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region := globalServerConfig.GetRegion()
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if region != globalMinioDefaultRegion {
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encodedSuccessResponse = encodeResponse(LocationResponse{
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Location: region,
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})
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}
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// Write success response.
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writeSuccessResponseXML(w, encodedSuccessResponse)
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}
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// ListMultipartUploadsHandler - GET Bucket (List Multipart uploads)
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// -------------------------
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// This operation lists in-progress multipart uploads. An in-progress
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// multipart upload is a multipart upload that has been initiated,
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// using the Initiate Multipart Upload request, but has not yet been
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// completed or aborted. This operation returns at most 1,000 multipart
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// uploads in the response.
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//
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func (api objectAPIHandlers) ListMultipartUploadsHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "ListMultipartUploads")
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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objectAPI := api.ObjectAPI()
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if objectAPI == nil {
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writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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return
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketMultipartUploadsAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(w, s3Error, r.URL)
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return
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}
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prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, _ := getBucketMultipartResources(r.URL.Query())
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if maxUploads < 0 {
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writeErrorResponse(w, ErrInvalidMaxUploads, r.URL)
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return
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}
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if keyMarker != "" {
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// Marker not common with prefix is not implemented.
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if !hasPrefix(keyMarker, prefix) {
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writeErrorResponse(w, ErrNotImplemented, r.URL)
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return
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}
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}
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listMultipartsInfo, err := objectAPI.ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
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if err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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// generate response
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response := generateListMultipartUploadsResponse(bucket, listMultipartsInfo)
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encodedSuccessResponse := encodeResponse(response)
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// write success response.
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writeSuccessResponseXML(w, encodedSuccessResponse)
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}
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// ListBucketsHandler - GET Service.
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// -----------
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// This implementation of the GET operation returns a list of all buckets
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// owned by the authenticated sender of the request.
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func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "ListBuckets")
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objectAPI := api.ObjectAPI()
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if objectAPI == nil {
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writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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return
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}
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listBuckets := objectAPI.ListBuckets
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if api.CacheAPI() != nil {
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listBuckets = api.CacheAPI().ListBuckets
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.ListAllMyBucketsAction, "", ""); s3Error != ErrNone {
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writeErrorResponse(w, s3Error, r.URL)
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return
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}
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// Invoke the list buckets.
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bucketsInfo, err := listBuckets(ctx)
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if err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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// Generate response.
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response := generateListBucketsResponse(bucketsInfo)
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encodedSuccessResponse := encodeResponse(response)
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// Write response.
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writeSuccessResponseXML(w, encodedSuccessResponse)
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}
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// DeleteMultipleObjectsHandler - deletes multiple objects.
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func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "DeleteMultipleObjects")
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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objectAPI := api.ObjectAPI()
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if objectAPI == nil {
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writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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return
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}
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var s3Error APIErrorCode
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if s3Error = checkRequestAuthType(ctx, r, policy.DeleteObjectAction, bucket, ""); s3Error != ErrNone {
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// In the event access is denied, a 200 response should still be returned
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// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
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if s3Error != ErrAccessDenied {
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writeErrorResponse(w, s3Error, r.URL)
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return
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}
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}
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// Content-Length is required and should be non-zero
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// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
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if r.ContentLength <= 0 {
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writeErrorResponse(w, ErrMissingContentLength, r.URL)
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return
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}
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// Content-Md5 is requied should be set
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// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
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if _, ok := r.Header["Content-Md5"]; !ok {
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writeErrorResponse(w, ErrMissingContentMD5, r.URL)
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return
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}
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// Allocate incoming content length bytes.
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deleteXMLBytes := make([]byte, r.ContentLength)
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// Read incoming body XML bytes.
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if _, err := io.ReadFull(r.Body, deleteXMLBytes); err != nil {
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logger.LogIf(ctx, err)
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writeErrorResponse(w, ErrInternalError, r.URL)
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return
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}
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// Unmarshal list of keys to be deleted.
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deleteObjects := &DeleteObjectsRequest{}
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if err := xml.Unmarshal(deleteXMLBytes, deleteObjects); err != nil {
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logger.LogIf(ctx, err)
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writeErrorResponse(w, ErrMalformedXML, r.URL)
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return
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}
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// Deny if WORM is enabled
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if globalWORMEnabled {
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// Not required to check whether given objects exist or not, because
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// DeleteMultipleObject is always successful irrespective of object existence.
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writeErrorResponse(w, ErrMethodNotAllowed, r.URL)
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return
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}
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var wg = &sync.WaitGroup{} // Allocate a new wait group.
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var dErrs = make([]error, len(deleteObjects.Objects))
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// Delete all requested objects in parallel.
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for index, object := range deleteObjects.Objects {
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wg.Add(1)
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go func(i int, obj ObjectIdentifier) {
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defer wg.Done()
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// If the request is denied access, each item
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// should be marked as 'AccessDenied'
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if s3Error == ErrAccessDenied {
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dErrs[i] = PrefixAccessDenied{
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Bucket: bucket,
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Object: obj.ObjectName,
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}
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return
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}
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deleteObject := objectAPI.DeleteObject
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if api.CacheAPI() != nil {
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deleteObject = api.CacheAPI().DeleteObject
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}
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dErr := deleteObject(ctx, bucket, obj.ObjectName)
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if dErr != nil {
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dErrs[i] = dErr
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}
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}(index, object)
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}
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wg.Wait()
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// Collect deleted objects and errors if any.
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var deletedObjects []ObjectIdentifier
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var deleteErrors []DeleteError
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for index, err := range dErrs {
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object := deleteObjects.Objects[index]
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// Success deleted objects are collected separately.
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if err == nil {
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deletedObjects = append(deletedObjects, object)
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continue
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}
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if _, ok := err.(ObjectNotFound); ok {
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// If the object is not found it should be
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// accounted as deleted as per S3 spec.
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deletedObjects = append(deletedObjects, object)
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continue
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}
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// Error during delete should be collected separately.
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deleteErrors = append(deleteErrors, DeleteError{
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Code: errorCodeResponse[toAPIErrorCode(err)].Code,
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Message: errorCodeResponse[toAPIErrorCode(err)].Description,
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Key: object.ObjectName,
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})
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}
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// Generate response
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response := generateMultiDeleteResponse(deleteObjects.Quiet, deletedObjects, deleteErrors)
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encodedSuccessResponse := encodeResponse(response)
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// Write success response.
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writeSuccessResponseXML(w, encodedSuccessResponse)
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// Get host and port from Request.RemoteAddr failing which
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// fill them with empty strings.
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host, port, err := net.SplitHostPort(r.RemoteAddr)
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if err != nil {
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host, port = "", ""
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}
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// Notify deleted event for objects.
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for _, dobj := range deletedObjects {
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sendEvent(eventArgs{
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EventName: event.ObjectRemovedDelete,
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BucketName: bucket,
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Object: ObjectInfo{
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Name: dobj.ObjectName,
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},
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ReqParams: extractReqParams(r),
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UserAgent: r.UserAgent(),
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Host: host,
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Port: port,
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})
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}
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}
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// PutBucketHandler - PUT Bucket
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// ----------
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// This implementation of the PUT operation creates a new bucket for authenticated request
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func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "PutBucket")
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objectAPI := api.ObjectAPI()
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if objectAPI == nil {
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writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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return
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}
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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if s3Error := checkRequestAuthType(ctx, r, policy.CreateBucketAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(w, s3Error, r.URL)
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return
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}
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// Parse incoming location constraint.
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location, s3Error := parseLocationConstraint(r)
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if s3Error != ErrNone {
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writeErrorResponse(w, s3Error, r.URL)
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return
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}
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// Validate if location sent by the client is valid, reject
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// requests which do not follow valid region requirements.
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if !isValidLocation(location) {
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writeErrorResponse(w, ErrInvalidRegion, r.URL)
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return
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}
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bucketLock := globalNSMutex.NewNSLock(bucket, "")
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if err := bucketLock.GetLock(globalObjectTimeout); err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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defer bucketLock.Unlock()
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// Proceed to creating a bucket.
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err := objectAPI.MakeBucketWithLocation(ctx, bucket, location)
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if err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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// Make sure to add Location information here only for bucket
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w.Header().Set("Location", path.Clean(r.URL.Path)) // Clean any trailing slashes.
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writeSuccessResponseHeadersOnly(w)
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}
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// PostPolicyBucketHandler - POST policy
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// ----------
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// This implementation of the POST operation handles object creation with a specified
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// signature policy in multipart/form-data
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func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "PostPolicyBucket")
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objectAPI := api.ObjectAPI()
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if objectAPI == nil {
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writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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return
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}
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bucket := mux.Vars(r)["bucket"]
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// Require Content-Length to be set in the request
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size := r.ContentLength
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if size < 0 {
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writeErrorResponse(w, ErrMissingContentLength, r.URL)
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return
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}
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resource, err := getResource(r.URL.Path, r.Host, globalDomainName)
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if err != nil {
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writeErrorResponse(w, ErrInvalidRequest, r.URL)
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return
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}
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// Make sure that the URL does not contain object name.
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if bucket != filepath.Clean(resource[1:]) {
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writeErrorResponse(w, ErrMethodNotAllowed, r.URL)
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return
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}
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// Here the parameter is the size of the form data that should
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// be loaded in memory, the remaining being put in temporary files.
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reader, err := r.MultipartReader()
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if err != nil {
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logger.LogIf(ctx, err)
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writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
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return
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}
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// Read multipart data and save in memory and in the disk if needed
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form, err := reader.ReadForm(maxFormMemory)
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if err != nil {
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logger.LogIf(ctx, err)
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writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
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return
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}
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// Remove all tmp files creating during multipart upload
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defer form.RemoveAll()
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// Extract all form fields
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fileBody, fileName, fileSize, formValues, err := extractPostPolicyFormValues(ctx, form)
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if err != nil {
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logger.LogIf(ctx, err)
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writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
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return
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}
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// Check if file is provided, error out otherwise.
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if fileBody == nil {
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writeErrorResponse(w, ErrPOSTFileRequired, r.URL)
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return
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}
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// Close multipart file
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defer fileBody.Close()
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formValues.Set("Bucket", bucket)
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if fileName != "" && strings.Contains(formValues.Get("Key"), "${filename}") {
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// S3 feature to replace ${filename} found in Key form field
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// by the filename attribute passed in multipart
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formValues.Set("Key", strings.Replace(formValues.Get("Key"), "${filename}", fileName, -1))
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}
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object := formValues.Get("Key")
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successRedirect := formValues.Get("success_action_redirect")
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successStatus := formValues.Get("success_action_status")
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var redirectURL *url.URL
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if successRedirect != "" {
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redirectURL, err = url.Parse(successRedirect)
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if err != nil {
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writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
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return
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}
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}
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// Verify policy signature.
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apiErr := doesPolicySignatureMatch(formValues)
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if apiErr != ErrNone {
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writeErrorResponse(w, apiErr, r.URL)
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return
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}
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policyBytes, err := base64.StdEncoding.DecodeString(formValues.Get("Policy"))
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if err != nil {
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writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
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return
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}
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postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
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if err != nil {
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writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL)
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return
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}
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// Make sure formValues adhere to policy restrictions.
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if apiErr = checkPostPolicy(formValues, postPolicyForm); apiErr != ErrNone {
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writeErrorResponse(w, apiErr, r.URL)
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return
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}
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// Ensure that the object size is within expected range, also the file size
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// should not exceed the maximum single Put size (5 GiB)
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lengthRange := postPolicyForm.Conditions.ContentLengthRange
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if lengthRange.Valid {
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if fileSize < lengthRange.Min {
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writeErrorResponse(w, toAPIErrorCode(errDataTooSmall), r.URL)
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return
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}
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if fileSize > lengthRange.Max || isMaxObjectSize(fileSize) {
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writeErrorResponse(w, toAPIErrorCode(errDataTooLarge), r.URL)
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return
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}
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}
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// Extract metadata to be saved from received Form.
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metadata, err := extractMetadataFromHeader(ctx, formValues)
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if err != nil {
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writeErrorResponse(w, ErrInternalError, r.URL)
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return
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}
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hashReader, err := hash.NewReader(fileBody, fileSize, "", "")
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if err != nil {
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logger.LogIf(ctx, err)
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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if objectAPI.IsEncryptionSupported() {
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if hasSSECustomerHeader(formValues) && !hasSuffix(object, slashSeparator) { // handle SSE-C requests
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var reader io.Reader
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var key []byte
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key, err = ParseSSECustomerHeader(formValues)
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if err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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reader, err = newEncryptReader(hashReader, key, metadata)
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if err != nil {
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writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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return
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}
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info := ObjectInfo{Size: fileSize}
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hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "") // do not try to verify encrypted content
|
|
if err != nil {
|
|
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
objInfo, err := objectAPI.PutObject(ctx, bucket, object, hashReader, metadata)
|
|
if err != nil {
|
|
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
|
|
return
|
|
}
|
|
|
|
location := getObjectLocation(r, globalDomainName, bucket, object)
|
|
w.Header().Set("ETag", `"`+objInfo.ETag+`"`)
|
|
w.Header().Set("Location", location)
|
|
|
|
// Get host and port from Request.RemoteAddr.
|
|
host, port, err := net.SplitHostPort(r.RemoteAddr)
|
|
if err != nil {
|
|
host, port = "", ""
|
|
}
|
|
|
|
// Notify object created event.
|
|
defer sendEvent(eventArgs{
|
|
EventName: event.ObjectCreatedPost,
|
|
BucketName: objInfo.Bucket,
|
|
Object: objInfo,
|
|
ReqParams: extractReqParams(r),
|
|
UserAgent: r.UserAgent(),
|
|
Host: host,
|
|
Port: port,
|
|
})
|
|
|
|
if successRedirect != "" {
|
|
// Replace raw query params..
|
|
redirectURL.RawQuery = getRedirectPostRawQuery(objInfo)
|
|
writeRedirectSeeOther(w, redirectURL.String())
|
|
return
|
|
}
|
|
|
|
// Decide what http response to send depending on success_action_status parameter
|
|
switch successStatus {
|
|
case "201":
|
|
resp := encodeResponse(PostResponse{
|
|
Bucket: objInfo.Bucket,
|
|
Key: objInfo.Name,
|
|
ETag: `"` + objInfo.ETag + `"`,
|
|
Location: location,
|
|
})
|
|
writeResponse(w, http.StatusCreated, resp, "application/xml")
|
|
case "200":
|
|
writeSuccessResponseHeadersOnly(w)
|
|
default:
|
|
writeSuccessNoContent(w)
|
|
}
|
|
}
|
|
|
|
// HeadBucketHandler - HEAD Bucket
|
|
// ----------
|
|
// This operation is useful to determine if a bucket exists.
|
|
// The operation returns a 200 OK if the bucket exists and you
|
|
// have permission to access it. Otherwise, the operation might
|
|
// return responses such as 404 Not Found and 403 Forbidden.
|
|
func (api objectAPIHandlers) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, "HeadBucket")
|
|
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponseHeadersOnly(w, ErrServerNotInitialized)
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
|
|
writeErrorResponseHeadersOnly(w, s3Error)
|
|
return
|
|
}
|
|
|
|
getBucketInfo := objectAPI.GetBucketInfo
|
|
if api.CacheAPI() != nil {
|
|
getBucketInfo = api.CacheAPI().GetBucketInfo
|
|
}
|
|
if _, err := getBucketInfo(ctx, bucket); err != nil {
|
|
writeErrorResponseHeadersOnly(w, toAPIErrorCode(err))
|
|
return
|
|
}
|
|
|
|
writeSuccessResponseHeadersOnly(w)
|
|
}
|
|
|
|
// DeleteBucketHandler - Delete bucket
|
|
func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, "DeleteBucket")
|
|
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(ctx, r, policy.DeleteBucketAction, bucket, ""); s3Error != ErrNone {
|
|
writeErrorResponse(w, s3Error, r.URL)
|
|
return
|
|
}
|
|
|
|
deleteBucket := objectAPI.DeleteBucket
|
|
if api.CacheAPI() != nil {
|
|
deleteBucket = api.CacheAPI().DeleteBucket
|
|
}
|
|
// Attempt to delete bucket.
|
|
if err := deleteBucket(ctx, bucket); err != nil {
|
|
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
|
|
return
|
|
}
|
|
|
|
globalNotificationSys.RemoveNotification(bucket)
|
|
globalPolicySys.Remove(bucket)
|
|
for addr, err := range globalNotificationSys.DeleteBucket(bucket) {
|
|
logger.GetReqInfo(ctx).AppendTags("remotePeer", addr.Name)
|
|
logger.LogIf(ctx, err)
|
|
}
|
|
|
|
// Write success response.
|
|
writeSuccessNoContent(w)
|
|
}
|
|
|