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366 lines
13 KiB
366 lines
13 KiB
/*
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* MinIO Cloud Storage, (C) 2016 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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"context"
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"net/http"
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"strconv"
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"strings"
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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/bucket/policy"
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"github.com/minio/minio/pkg/handlers"
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"github.com/minio/minio/pkg/sync/errgroup"
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)
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func concurrentDecryptETag(ctx context.Context, objects []ObjectInfo) {
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g := errgroup.WithNErrs(len(objects)).WithConcurrency(500)
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_, cancel := g.WithCancelOnError(ctx)
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defer cancel()
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for index := range objects {
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index := index
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g.Go(func() error {
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size, err := objects[index].GetActualSize()
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if err == nil {
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objects[index].Size = size
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}
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objects[index].ETag = objects[index].GetActualETag(nil)
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return nil
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}, index)
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}
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g.WaitErr()
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}
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// Validate all the ListObjects query arguments, returns an APIErrorCode
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// if one of the args do not meet the required conditions.
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// Special conditions required by MinIO server are as below
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// - delimiter if set should be equal to '/', otherwise the request is rejected.
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// - marker if set should have a common prefix with 'prefix' param, otherwise
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// the request is rejected.
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func validateListObjectsArgs(marker, delimiter, encodingType string, maxKeys int) APIErrorCode {
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// Max keys cannot be negative.
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if maxKeys < 0 {
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return ErrInvalidMaxKeys
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}
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if encodingType != "" {
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// Only url encoding type is supported
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if strings.ToLower(encodingType) != "url" {
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return ErrInvalidEncodingMethod
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}
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}
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return ErrNone
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}
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// ListObjectVersions - GET Bucket Object versions
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// You can use the versions subresource to list metadata about all
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// of the versions of objects in a bucket.
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func (api objectAPIHandlers) ListObjectVersionsHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ListObjectVersions")
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defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
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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(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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return
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketVersionsAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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urlValues := r.URL.Query()
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// Extract all the listBucketVersions query params to their native values.
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prefix, marker, delimiter, maxkeys, encodingType, versionIDMarker, errCode := getListBucketObjectVersionsArgs(urlValues)
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if errCode != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
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return
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}
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// Validate the query params before beginning to serve the request.
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if s3Error := validateListObjectsArgs(marker, delimiter, encodingType, maxkeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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listObjectVersions := objectAPI.ListObjectVersions
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// Inititate a list object versions operation based on the input params.
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// On success would return back ListObjectsInfo object to be
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// marshaled into S3 compatible XML header.
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listObjectVersionsInfo, err := listObjectVersions(ctx, bucket, prefix, marker, versionIDMarker, delimiter, maxkeys)
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if err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
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return
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}
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concurrentDecryptETag(ctx, listObjectVersionsInfo.Objects)
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response := generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delimiter, encodingType, maxkeys, listObjectVersionsInfo)
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// Write success response.
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writeSuccessResponseXML(w, encodeResponse(response))
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}
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// ListObjectsV2MHandler - GET Bucket (List Objects) Version 2 with metadata.
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// --------------------------
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// This implementation of the GET operation returns some or all (up to 10000)
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// of the objects in a bucket. You can use the request parameters as selection
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// criteria to return a subset of the objects in a bucket.
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//
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// NOTE: It is recommended that this API to be used for application development.
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// MinIO continues to support ListObjectsV1 and V2 for supporting legacy tools.
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func (api objectAPIHandlers) ListObjectsV2MHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ListObjectsV2M")
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defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
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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(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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return
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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urlValues := r.URL.Query()
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// Extract all the listObjectsV2 query params to their native values.
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prefix, token, startAfter, delimiter, fetchOwner, maxKeys, encodingType, errCode := getListObjectsV2Args(urlValues)
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if errCode != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
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return
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}
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// Validate the query params before beginning to serve the request.
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// fetch-owner is not validated since it is a boolean
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if s3Error := validateListObjectsArgs(token, delimiter, encodingType, maxKeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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listObjectsV2 := objectAPI.ListObjectsV2
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// Inititate a list objects operation based on the input params.
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// On success would return back ListObjectsInfo object to be
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// marshaled into S3 compatible XML header.
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listObjectsV2Info, err := listObjectsV2(ctx, bucket, prefix, token, delimiter, maxKeys, fetchOwner, startAfter)
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if err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
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return
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}
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concurrentDecryptETag(ctx, listObjectsV2Info.Objects)
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// The next continuation token has id@node_index format to optimize paginated listing
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nextContinuationToken := listObjectsV2Info.NextContinuationToken
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response := generateListObjectsV2Response(bucket, prefix, token, nextContinuationToken, startAfter,
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delimiter, encodingType, fetchOwner, listObjectsV2Info.IsTruncated,
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maxKeys, listObjectsV2Info.Objects, listObjectsV2Info.Prefixes, true)
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// Write success response.
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writeSuccessResponseXML(w, encodeResponse(response))
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}
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// ListObjectsV2Handler - GET Bucket (List Objects) Version 2.
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// --------------------------
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// This implementation of the GET operation returns some or all (up to 10000)
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// of the objects in a bucket. You can use the request parameters as selection
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// criteria to return a subset of the objects in a bucket.
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//
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// NOTE: It is recommended that this API to be used for application development.
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// MinIO continues to support ListObjectsV1 for supporting legacy tools.
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func (api objectAPIHandlers) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ListObjectsV2")
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defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
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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(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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return
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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urlValues := r.URL.Query()
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// Extract all the listObjectsV2 query params to their native values.
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prefix, token, startAfter, delimiter, fetchOwner, maxKeys, encodingType, errCode := getListObjectsV2Args(urlValues)
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if errCode != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
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return
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}
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// Validate the query params before beginning to serve the request.
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// fetch-owner is not validated since it is a boolean
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if s3Error := validateListObjectsArgs(token, delimiter, encodingType, maxKeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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listObjectsV2 := objectAPI.ListObjectsV2
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// Inititate a list objects operation based on the input params.
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// On success would return back ListObjectsInfo object to be
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// marshaled into S3 compatible XML header.
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listObjectsV2Info, err := listObjectsV2(ctx, bucket, prefix, token, delimiter, maxKeys, fetchOwner, startAfter)
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if err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
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return
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}
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concurrentDecryptETag(ctx, listObjectsV2Info.Objects)
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response := generateListObjectsV2Response(bucket, prefix, token, listObjectsV2Info.NextContinuationToken, startAfter,
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delimiter, encodingType, fetchOwner, listObjectsV2Info.IsTruncated,
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maxKeys, listObjectsV2Info.Objects, listObjectsV2Info.Prefixes, false)
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// Write success response.
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writeSuccessResponseXML(w, encodeResponse(response))
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}
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func parseRequestToken(token string) (subToken string, nodeIndex int) {
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if token == "" {
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return token, -1
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}
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i := strings.Index(token, "@")
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if i < 0 {
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return token, -1
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}
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nodeIndex, err := strconv.Atoi(token[i+1:])
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if err != nil {
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return token, -1
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}
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subToken = token[:i]
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return subToken, nodeIndex
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}
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func proxyRequestByToken(ctx context.Context, w http.ResponseWriter, r *http.Request, token string) (string, bool) {
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subToken, nodeIndex := parseRequestToken(token)
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if nodeIndex > 0 {
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return subToken, proxyRequestByNodeIndex(ctx, w, r, nodeIndex)
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}
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return subToken, false
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}
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func proxyRequestByNodeIndex(ctx context.Context, w http.ResponseWriter, r *http.Request, index int) (success bool) {
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if len(globalProxyEndpoints) == 0 {
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return false
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}
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if index < 0 || index >= len(globalProxyEndpoints) {
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return false
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}
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ep := globalProxyEndpoints[index]
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if ep.IsLocal {
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return false
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}
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return proxyRequest(ctx, w, r, ep)
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}
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func proxyRequestByStringHash(ctx context.Context, w http.ResponseWriter, r *http.Request, str string) (success bool) {
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return proxyRequestByNodeIndex(ctx, w, r, crcHashMod(str, len(globalProxyEndpoints)))
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}
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// ListObjectsV1Handler - GET Bucket (List Objects) Version 1.
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// --------------------------
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// This implementation of the GET operation returns some or all (up to 10000)
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// of the objects in a bucket. You can use the request parameters as selection
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// criteria to return a subset of the objects in a bucket.
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//
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func (api objectAPIHandlers) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ListObjectsV1")
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defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
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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(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
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return
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}
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if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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// Extract all the litsObjectsV1 query params to their native values.
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prefix, marker, delimiter, maxKeys, encodingType, s3Error := getListObjectsV1Args(r.URL.Query())
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if s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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// Validate all the query params before beginning to serve the request.
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if s3Error := validateListObjectsArgs(marker, delimiter, encodingType, maxKeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
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return
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}
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// Forward the request using Source IP or bucket
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forwardStr := handlers.GetSourceIPFromHeaders(r)
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if forwardStr == "" {
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forwardStr = bucket
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}
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if proxyRequestByStringHash(ctx, w, r, forwardStr) {
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return
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}
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listObjects := objectAPI.ListObjects
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// Inititate a list objects operation based on the input params.
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// On success would return back ListObjectsInfo object to be
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// marshaled into S3 compatible XML header.
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listObjectsInfo, err := listObjects(ctx, bucket, prefix, marker, delimiter, maxKeys)
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if err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
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return
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}
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concurrentDecryptETag(ctx, listObjectsInfo.Objects)
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response := generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingType, maxKeys, listObjectsInfo)
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// Write success response.
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writeSuccessResponseXML(w, encodeResponse(response))
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}
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