mirror of
https://github.com/minio/minio.git
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326 lines
11 KiB
Go
326 lines
11 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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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/minio/minio/internal/logger"
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"github.com/minio/mux"
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"github.com/minio/pkg/v2/policy"
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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(prefix, 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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// AWS S3 spec only supports 'url' encoding type
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if !strings.EqualFold(encodingType, "url") {
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return ErrInvalidEncodingMethod
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}
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}
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if !IsValidObjectPrefix(prefix) {
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return ErrInvalidObjectName
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}
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if marker != "" && !HasPrefix(marker, prefix) {
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return ErrNotImplemented
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}
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return ErrNone
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}
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func (api objectAPIHandlers) ListObjectVersionsHandler(w http.ResponseWriter, r *http.Request) {
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api.listObjectVersionsHandler(w, r, false)
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}
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func (api objectAPIHandlers) ListObjectVersionsMHandler(w http.ResponseWriter, r *http.Request) {
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api.listObjectVersionsHandler(w, r, true)
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}
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// ListObjectVersionsHandler - 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, metadata bool) {
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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)
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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)
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return
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}
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var checkObjMeta metaCheckFn
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if metadata {
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checkObjMeta = func(name string, action policy.Action) (s3Err APIErrorCode) {
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return checkRequestAuthType(ctx, r, action, bucket, name)
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}
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}
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urlValues := r.Form
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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)
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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(prefix, marker, delimiter, encodingType, maxkeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
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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)
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return
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}
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if err = DecryptETags(ctx, GlobalKMS, listObjectVersionsInfo.Objects); err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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response := generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delimiter, encodingType, maxkeys, listObjectVersionsInfo, checkObjMeta)
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// Write success response.
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writeSuccessResponseXML(w, encodeResponseList(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 1000)
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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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api.listObjectsV2Handler(ctx, w, r, true)
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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 1000)
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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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api.listObjectsV2Handler(ctx, w, r, false)
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}
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// listObjectsV2Handler performs listing either with or without extra metadata.
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func (api objectAPIHandlers) listObjectsV2Handler(ctx context.Context, w http.ResponseWriter, r *http.Request, metadata bool) {
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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)
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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)
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return
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}
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var checkObjMeta metaCheckFn
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if metadata {
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checkObjMeta = func(name string, action policy.Action) (s3Err APIErrorCode) {
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return checkRequestAuthType(ctx, r, action, bucket, name)
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}
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}
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urlValues := r.Form
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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)
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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(prefix, token, delimiter, encodingType, maxKeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
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return
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}
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var (
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listObjectsV2Info ListObjectsV2Info
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err error
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)
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if r.Header.Get(xMinIOExtract) == "true" && strings.Contains(prefix, archivePattern) {
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// Inititate a list objects operation inside a zip file based in the input params
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listObjectsV2Info, err = listObjectsV2InArchive(ctx, objectAPI, bucket, prefix, token, delimiter, maxKeys, fetchOwner, startAfter)
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} else {
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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 = objectAPI.ListObjectsV2(ctx, bucket, prefix, token, delimiter, maxKeys, fetchOwner, startAfter)
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}
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if err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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if err = DecryptETags(ctx, GlobalKMS, listObjectsV2Info.Objects); err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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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, checkObjMeta)
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// Write success response.
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writeSuccessResponseXML(w, encodeResponseList(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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// 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 1000)
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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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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)
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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)
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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.Form)
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if s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
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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(prefix, marker, delimiter, encodingType, maxKeys); s3Error != ErrNone {
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writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
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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)
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return
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}
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if err = DecryptETags(ctx, GlobalKMS, listObjectsInfo.Objects); err != nil {
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writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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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, encodeResponseList(response))
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}
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