mirror of https://github.com/minio/minio.git
1950 lines
56 KiB
Go
1950 lines
56 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016-2019 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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"archive/zip"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"path"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"time"
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humanize "github.com/dustin/go-humanize"
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snappy "github.com/golang/snappy"
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"github.com/gorilla/mux"
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"github.com/gorilla/rpc/v2/json2"
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miniogopolicy "github.com/minio/minio-go/pkg/policy"
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"github.com/minio/minio-go/pkg/s3utils"
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"github.com/minio/minio-go/pkg/set"
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"github.com/minio/minio/browser"
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"github.com/minio/minio/cmd/crypto"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/auth"
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"github.com/minio/minio/pkg/dns"
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"github.com/minio/minio/pkg/event"
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"github.com/minio/minio/pkg/handlers"
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"github.com/minio/minio/pkg/hash"
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iampolicy "github.com/minio/minio/pkg/iam/policy"
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"github.com/minio/minio/pkg/ioutil"
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"github.com/minio/minio/pkg/policy"
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)
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// WebGenericArgs - empty struct for calls that don't accept arguments
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// for ex. ServerInfo, GenerateAuth
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type WebGenericArgs struct{}
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// WebGenericRep - reply structure for calls for which reply is success/failure
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// for ex. RemoveObject MakeBucket
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type WebGenericRep struct {
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UIVersion string `json:"uiVersion"`
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}
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// ServerInfoRep - server info reply.
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type ServerInfoRep struct {
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MinioVersion string
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MinioMemory string
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MinioPlatform string
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MinioRuntime string
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MinioGlobalInfo map[string]interface{}
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UIVersion string `json:"uiVersion"`
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}
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// ServerInfo - get server info.
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func (web *webAPIHandlers) ServerInfo(r *http.Request, args *WebGenericArgs, reply *ServerInfoRep) error {
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_, owner, authErr := webRequestAuthenticate(r)
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if authErr != nil {
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return toJSONError(authErr)
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}
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host, err := os.Hostname()
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if err != nil {
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host = ""
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}
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memstats := &runtime.MemStats{}
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runtime.ReadMemStats(memstats)
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mem := fmt.Sprintf("Used: %s | Allocated: %s | Used-Heap: %s | Allocated-Heap: %s",
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humanize.Bytes(memstats.Alloc),
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humanize.Bytes(memstats.TotalAlloc),
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humanize.Bytes(memstats.HeapAlloc),
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humanize.Bytes(memstats.HeapSys))
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platform := fmt.Sprintf("Host: %s | OS: %s | Arch: %s",
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host,
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runtime.GOOS,
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runtime.GOARCH)
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goruntime := fmt.Sprintf("Version: %s | CPUs: %s", runtime.Version(), strconv.Itoa(runtime.NumCPU()))
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reply.MinioVersion = Version
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reply.MinioGlobalInfo = getGlobalInfo()
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// If ENV creds are not set and incoming user is not owner
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// disable changing credentials.
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v, ok := reply.MinioGlobalInfo["isEnvCreds"].(bool)
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if ok && !v {
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reply.MinioGlobalInfo["isEnvCreds"] = !owner
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}
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// if etcd is set disallow changing credentials through UI
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if globalEtcdClient != nil {
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reply.MinioGlobalInfo["isEnvCreds"] = true
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}
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reply.MinioMemory = mem
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reply.MinioPlatform = platform
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reply.MinioRuntime = goruntime
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reply.UIVersion = browser.UIVersion
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return nil
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}
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// StorageInfoRep - contains storage usage statistics.
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type StorageInfoRep struct {
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StorageInfo StorageInfo `json:"storageInfo"`
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UIVersion string `json:"uiVersion"`
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}
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// StorageInfo - web call to gather storage usage statistics.
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func (web *webAPIHandlers) StorageInfo(r *http.Request, args *AuthArgs, reply *StorageInfoRep) error {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return toJSONError(errServerNotInitialized)
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}
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_, _, authErr := webRequestAuthenticate(r)
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if authErr != nil {
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return toJSONError(authErr)
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}
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reply.StorageInfo = objectAPI.StorageInfo(context.Background())
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reply.UIVersion = browser.UIVersion
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return nil
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}
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// MakeBucketArgs - make bucket args.
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type MakeBucketArgs struct {
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BucketName string `json:"bucketName"`
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}
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// MakeBucket - creates a new bucket.
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func (web *webAPIHandlers) MakeBucket(r *http.Request, args *MakeBucketArgs, reply *WebGenericRep) error {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return toJSONError(errServerNotInitialized)
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}
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claims, owner, authErr := webRequestAuthenticate(r)
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if authErr != nil {
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return toJSONError(authErr)
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}
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// For authenticated users apply IAM policy.
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if !globalIAMSys.IsAllowed(iampolicy.Args{
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AccountName: claims.Subject,
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Action: iampolicy.CreateBucketAction,
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BucketName: args.BucketName,
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ConditionValues: getConditionValues(r, "", claims.Subject),
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IsOwner: owner,
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}) {
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return toJSONError(errAccessDenied)
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}
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// Check if bucket is a reserved bucket name or invalid.
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if isReservedOrInvalidBucket(args.BucketName, true) {
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return toJSONError(errInvalidBucketName)
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}
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if globalDNSConfig != nil {
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if _, err := globalDNSConfig.Get(args.BucketName); err != nil {
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if err == dns.ErrNoEntriesFound {
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// Proceed to creating a bucket.
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if err = objectAPI.MakeBucketWithLocation(context.Background(), args.BucketName, globalServerConfig.GetRegion()); err != nil {
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return toJSONError(err)
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}
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if err = globalDNSConfig.Put(args.BucketName); err != nil {
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objectAPI.DeleteBucket(context.Background(), args.BucketName)
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return toJSONError(err)
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}
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reply.UIVersion = browser.UIVersion
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return nil
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}
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return toJSONError(err)
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}
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return toJSONError(errBucketAlreadyExists)
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}
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if err := objectAPI.MakeBucketWithLocation(context.Background(), args.BucketName, globalServerConfig.GetRegion()); err != nil {
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return toJSONError(err, args.BucketName)
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}
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reply.UIVersion = browser.UIVersion
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return nil
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}
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// RemoveBucketArgs - remove bucket args.
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type RemoveBucketArgs struct {
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BucketName string `json:"bucketName"`
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}
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// DeleteBucket - removes a bucket, must be empty.
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func (web *webAPIHandlers) DeleteBucket(r *http.Request, args *RemoveBucketArgs, reply *WebGenericRep) error {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return toJSONError(errServerNotInitialized)
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}
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claims, owner, authErr := webRequestAuthenticate(r)
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if authErr != nil {
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return toJSONError(authErr)
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}
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// For authenticated users apply IAM policy.
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if !globalIAMSys.IsAllowed(iampolicy.Args{
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AccountName: claims.Subject,
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Action: iampolicy.DeleteBucketAction,
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BucketName: args.BucketName,
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ConditionValues: getConditionValues(r, "", claims.Subject),
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IsOwner: owner,
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}) {
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return toJSONError(errAccessDenied)
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}
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// Check if bucket is a reserved bucket name or invalid.
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if isReservedOrInvalidBucket(args.BucketName, false) {
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return toJSONError(errInvalidBucketName)
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}
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reply.UIVersion = browser.UIVersion
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if isRemoteCallRequired(context.Background(), args.BucketName, objectAPI) {
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sr, err := globalDNSConfig.Get(args.BucketName)
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if err != nil {
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if err == dns.ErrNoEntriesFound {
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return toJSONError(BucketNotFound{
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Bucket: args.BucketName,
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}, args.BucketName)
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}
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return toJSONError(err, args.BucketName)
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}
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core, err := getRemoteInstanceClient(r, getHostFromSrv(sr))
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if err != nil {
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return toJSONError(err, args.BucketName)
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}
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if err = core.RemoveBucket(args.BucketName); err != nil {
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return toJSONError(err, args.BucketName)
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}
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return nil
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}
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ctx := context.Background()
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deleteBucket := objectAPI.DeleteBucket
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if web.CacheAPI() != nil {
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deleteBucket = web.CacheAPI().DeleteBucket
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}
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if err := deleteBucket(ctx, args.BucketName); err != nil {
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return toJSONError(err, args.BucketName)
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}
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globalNotificationSys.RemoveNotification(args.BucketName)
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globalPolicySys.Remove(args.BucketName)
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globalNotificationSys.DeleteBucket(ctx, args.BucketName)
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if globalDNSConfig != nil {
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if err := globalDNSConfig.Delete(args.BucketName); err != nil {
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// Deleting DNS entry failed, attempt to create the bucket again.
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objectAPI.MakeBucketWithLocation(ctx, args.BucketName, "")
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return toJSONError(err)
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}
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}
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return nil
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}
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// ListBucketsRep - list buckets response
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type ListBucketsRep struct {
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Buckets []WebBucketInfo `json:"buckets"`
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UIVersion string `json:"uiVersion"`
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}
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// WebBucketInfo container for list buckets metadata.
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type WebBucketInfo struct {
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// The name of the bucket.
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Name string `json:"name"`
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// Date the bucket was created.
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CreationDate time.Time `json:"creationDate"`
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}
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// ListBuckets - list buckets api.
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func (web *webAPIHandlers) ListBuckets(r *http.Request, args *WebGenericArgs, reply *ListBucketsRep) error {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return toJSONError(errServerNotInitialized)
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}
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listBuckets := objectAPI.ListBuckets
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if web.CacheAPI() != nil {
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listBuckets = web.CacheAPI().ListBuckets
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}
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claims, owner, authErr := webRequestAuthenticate(r)
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if authErr != nil {
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return toJSONError(authErr)
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}
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// Set prefix value for "s3:prefix" policy conditionals.
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r.Header.Set("prefix", "")
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// Set delimiter value for "s3:delimiter" policy conditionals.
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r.Header.Set("delimiter", slashSeparator)
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// If etcd, dns federation configured list buckets from etcd.
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if globalDNSConfig != nil {
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dnsBuckets, err := globalDNSConfig.List()
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if err != nil && err != dns.ErrNoEntriesFound {
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return toJSONError(err)
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}
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bucketSet := set.NewStringSet()
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for _, dnsRecord := range dnsBuckets {
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if bucketSet.Contains(dnsRecord.Key) {
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continue
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}
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if globalIAMSys.IsAllowed(iampolicy.Args{
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AccountName: claims.Subject,
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Action: iampolicy.ListBucketAction,
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BucketName: dnsRecord.Key,
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ConditionValues: getConditionValues(r, "", claims.Subject),
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IsOwner: owner,
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ObjectName: "",
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}) {
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reply.Buckets = append(reply.Buckets, WebBucketInfo{
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Name: dnsRecord.Key,
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CreationDate: dnsRecord.CreationDate,
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})
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bucketSet.Add(dnsRecord.Key)
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}
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}
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} else {
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buckets, err := listBuckets(context.Background())
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if err != nil {
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return toJSONError(err)
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}
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for _, bucket := range buckets {
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if globalIAMSys.IsAllowed(iampolicy.Args{
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AccountName: claims.Subject,
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Action: iampolicy.ListBucketAction,
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BucketName: bucket.Name,
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ConditionValues: getConditionValues(r, "", claims.Subject),
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IsOwner: owner,
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ObjectName: "",
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}) {
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reply.Buckets = append(reply.Buckets, WebBucketInfo{
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Name: bucket.Name,
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CreationDate: bucket.Created,
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})
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}
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}
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}
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reply.UIVersion = browser.UIVersion
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return nil
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}
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// ListObjectsArgs - list object args.
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type ListObjectsArgs struct {
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BucketName string `json:"bucketName"`
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Prefix string `json:"prefix"`
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Marker string `json:"marker"`
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}
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// ListObjectsRep - list objects response.
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type ListObjectsRep struct {
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Objects []WebObjectInfo `json:"objects"`
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NextMarker string `json:"nextmarker"`
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IsTruncated bool `json:"istruncated"`
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Writable bool `json:"writable"` // Used by client to show "upload file" button.
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UIVersion string `json:"uiVersion"`
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}
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// WebObjectInfo container for list objects metadata.
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type WebObjectInfo struct {
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// Name of the object
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Key string `json:"name"`
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// Date and time the object was last modified.
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LastModified time.Time `json:"lastModified"`
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// Size in bytes of the object.
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Size int64 `json:"size"`
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// ContentType is mime type of the object.
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ContentType string `json:"contentType"`
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}
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// ListObjects - list objects api.
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func (web *webAPIHandlers) ListObjects(r *http.Request, args *ListObjectsArgs, reply *ListObjectsRep) error {
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reply.UIVersion = browser.UIVersion
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return toJSONError(errServerNotInitialized)
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}
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listObjects := objectAPI.ListObjects
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if web.CacheAPI() != nil {
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listObjects = web.CacheAPI().ListObjects
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}
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if isRemoteCallRequired(context.Background(), args.BucketName, objectAPI) {
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sr, err := globalDNSConfig.Get(args.BucketName)
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if err != nil {
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if err == dns.ErrNoEntriesFound {
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return toJSONError(BucketNotFound{
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Bucket: args.BucketName,
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}, args.BucketName)
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}
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return toJSONError(err, args.BucketName)
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}
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core, err := getRemoteInstanceClient(r, getHostFromSrv(sr))
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if err != nil {
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return toJSONError(err, args.BucketName)
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}
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result, err := core.ListObjects(args.BucketName, args.Prefix, args.Marker, slashSeparator, 1000)
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if err != nil {
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return toJSONError(err, args.BucketName)
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}
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reply.NextMarker = result.NextMarker
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reply.IsTruncated = result.IsTruncated
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for _, obj := range result.Contents {
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reply.Objects = append(reply.Objects, WebObjectInfo{
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Key: obj.Key,
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LastModified: obj.LastModified,
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Size: obj.Size,
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ContentType: obj.ContentType,
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})
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}
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for _, p := range result.CommonPrefixes {
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reply.Objects = append(reply.Objects, WebObjectInfo{
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Key: p.Prefix,
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})
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}
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return nil
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}
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claims, owner, authErr := webRequestAuthenticate(r)
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if authErr != nil {
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if authErr == errNoAuthToken {
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// Set prefix value for "s3:prefix" policy conditionals.
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r.Header.Set("prefix", args.Prefix)
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// Set delimiter value for "s3:delimiter" policy conditionals.
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r.Header.Set("delimiter", slashSeparator)
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// Check if anonymous (non-owner) has access to download objects.
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readable := globalPolicySys.IsAllowed(policy.Args{
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Action: policy.ListBucketAction,
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BucketName: args.BucketName,
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ConditionValues: getConditionValues(r, "", ""),
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IsOwner: false,
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})
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// Check if anonymous (non-owner) has access to upload objects.
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writable := globalPolicySys.IsAllowed(policy.Args{
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Action: policy.PutObjectAction,
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BucketName: args.BucketName,
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ConditionValues: getConditionValues(r, "", ""),
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IsOwner: false,
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ObjectName: args.Prefix + "/",
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})
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reply.Writable = writable
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if !readable {
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// Error out if anonymous user (non-owner) has no access to download or upload objects
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if !writable {
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return errAccessDenied
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}
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// return empty object list if access is write only
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return nil
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}
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} else {
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return toJSONError(authErr)
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}
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}
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// For authenticated users apply IAM policy.
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if authErr == nil {
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// Set prefix value for "s3:prefix" policy conditionals.
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r.Header.Set("prefix", args.Prefix)
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// Set delimiter value for "s3:delimiter" policy conditionals.
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r.Header.Set("delimiter", slashSeparator)
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readable := globalIAMSys.IsAllowed(iampolicy.Args{
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AccountName: claims.Subject,
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Action: iampolicy.ListBucketAction,
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BucketName: args.BucketName,
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ConditionValues: getConditionValues(r, "", claims.Subject),
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IsOwner: owner,
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})
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writable := globalIAMSys.IsAllowed(iampolicy.Args{
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AccountName: claims.Subject,
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Action: iampolicy.PutObjectAction,
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BucketName: args.BucketName,
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ConditionValues: getConditionValues(r, "", claims.Subject),
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IsOwner: owner,
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ObjectName: args.Prefix + "/",
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})
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reply.Writable = writable
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if !readable {
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// Error out if anonymous user (non-owner) has no access to download or upload objects
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if !writable {
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return errAccessDenied
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}
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// return empty object list if access is write only
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return nil
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}
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}
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// Check if bucket is a reserved bucket name or invalid.
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if isReservedOrInvalidBucket(args.BucketName, false) {
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return toJSONError(errInvalidBucketName)
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}
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|
|
lo, err := listObjects(context.Background(), args.BucketName, args.Prefix, args.Marker, slashSeparator, 1000)
|
|
if err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
for i := range lo.Objects {
|
|
if crypto.IsEncrypted(lo.Objects[i].UserDefined) {
|
|
lo.Objects[i].Size, err = lo.Objects[i].DecryptedSize()
|
|
if err != nil {
|
|
return toJSONError(err)
|
|
}
|
|
}
|
|
}
|
|
reply.NextMarker = lo.NextMarker
|
|
reply.IsTruncated = lo.IsTruncated
|
|
for _, obj := range lo.Objects {
|
|
reply.Objects = append(reply.Objects, WebObjectInfo{
|
|
Key: obj.Name,
|
|
LastModified: obj.ModTime,
|
|
Size: obj.Size,
|
|
ContentType: obj.ContentType,
|
|
})
|
|
}
|
|
for _, prefix := range lo.Prefixes {
|
|
reply.Objects = append(reply.Objects, WebObjectInfo{
|
|
Key: prefix,
|
|
})
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// RemoveObjectArgs - args to remove an object, JSON will look like.
|
|
//
|
|
// {
|
|
// "bucketname": "testbucket",
|
|
// "objects": [
|
|
// "photos/hawaii/",
|
|
// "photos/maldives/",
|
|
// "photos/sanjose.jpg"
|
|
// ]
|
|
// }
|
|
type RemoveObjectArgs struct {
|
|
Objects []string `json:"objects"` // Contains objects, prefixes.
|
|
BucketName string `json:"bucketname"` // Contains bucket name.
|
|
}
|
|
|
|
// RemoveObject - removes an object, or all the objects at a given prefix.
|
|
func (web *webAPIHandlers) RemoveObject(r *http.Request, args *RemoveObjectArgs, reply *WebGenericRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
return toJSONError(errServerNotInitialized)
|
|
}
|
|
listObjects := objectAPI.ListObjects
|
|
if web.CacheAPI() != nil {
|
|
listObjects = web.CacheAPI().ListObjects
|
|
}
|
|
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
|
|
if args.BucketName == "" || len(args.Objects) == 0 {
|
|
return toJSONError(errInvalidArgument)
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(args.BucketName, false) {
|
|
return toJSONError(errInvalidBucketName)
|
|
}
|
|
|
|
reply.UIVersion = browser.UIVersion
|
|
if isRemoteCallRequired(context.Background(), args.BucketName, objectAPI) {
|
|
sr, err := globalDNSConfig.Get(args.BucketName)
|
|
if err != nil {
|
|
if err == dns.ErrNoEntriesFound {
|
|
return toJSONError(BucketNotFound{
|
|
Bucket: args.BucketName,
|
|
}, args.BucketName)
|
|
}
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
core, err := getRemoteInstanceClient(r, getHostFromSrv(sr))
|
|
if err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
objectsCh := make(chan string)
|
|
|
|
// Send object names that are needed to be removed to objectsCh
|
|
go func() {
|
|
defer close(objectsCh)
|
|
|
|
for _, objectName := range args.Objects {
|
|
objectsCh <- objectName
|
|
}
|
|
}()
|
|
|
|
for resp := range core.RemoveObjects(args.BucketName, objectsCh) {
|
|
if resp.Err != nil {
|
|
return toJSONError(resp.Err, args.BucketName, resp.ObjectName)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var err error
|
|
next:
|
|
for _, objectName := range args.Objects {
|
|
// If not a directory, remove the object.
|
|
if !hasSuffix(objectName, slashSeparator) && objectName != "" {
|
|
// Deny if WORM is enabled
|
|
if globalWORMEnabled {
|
|
if _, err = objectAPI.GetObjectInfo(context.Background(), args.BucketName, objectName, ObjectOptions{}); err == nil {
|
|
return toJSONError(errMethodNotAllowed)
|
|
}
|
|
}
|
|
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.DeleteObjectAction,
|
|
BucketName: args.BucketName,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
ObjectName: objectName,
|
|
}) {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
|
|
if err = deleteObject(context.Background(), objectAPI, web.CacheAPI(), args.BucketName, objectName, r); err != nil {
|
|
break next
|
|
}
|
|
continue
|
|
}
|
|
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.DeleteObjectAction,
|
|
BucketName: args.BucketName,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
ObjectName: objectName,
|
|
}) {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
|
|
// For directories, list the contents recursively and remove.
|
|
marker := ""
|
|
for {
|
|
var lo ListObjectsInfo
|
|
lo, err = listObjects(context.Background(), args.BucketName, objectName, marker, "", 1000)
|
|
if err != nil {
|
|
break next
|
|
}
|
|
marker = lo.NextMarker
|
|
for _, obj := range lo.Objects {
|
|
err = deleteObject(context.Background(), objectAPI, web.CacheAPI(), args.BucketName, obj.Name, r)
|
|
if err != nil {
|
|
break next
|
|
}
|
|
}
|
|
if !lo.IsTruncated {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
if err != nil && !isErrObjectNotFound(err) {
|
|
// Ignore object not found error.
|
|
return toJSONError(err, args.BucketName, "")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// LoginArgs - login arguments.
|
|
type LoginArgs struct {
|
|
Username string `json:"username" form:"username"`
|
|
Password string `json:"password" form:"password"`
|
|
}
|
|
|
|
// LoginRep - login reply.
|
|
type LoginRep struct {
|
|
Token string `json:"token"`
|
|
UIVersion string `json:"uiVersion"`
|
|
}
|
|
|
|
// Login - user login handler.
|
|
func (web *webAPIHandlers) Login(r *http.Request, args *LoginArgs, reply *LoginRep) error {
|
|
token, err := authenticateWeb(args.Username, args.Password)
|
|
if err != nil {
|
|
return toJSONError(err)
|
|
}
|
|
|
|
reply.Token = token
|
|
reply.UIVersion = browser.UIVersion
|
|
return nil
|
|
}
|
|
|
|
// GenerateAuthReply - reply for GenerateAuth
|
|
type GenerateAuthReply struct {
|
|
AccessKey string `json:"accessKey"`
|
|
SecretKey string `json:"secretKey"`
|
|
UIVersion string `json:"uiVersion"`
|
|
}
|
|
|
|
func (web webAPIHandlers) GenerateAuth(r *http.Request, args *WebGenericArgs, reply *GenerateAuthReply) error {
|
|
_, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
if !owner {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
cred, err := auth.GetNewCredentials()
|
|
if err != nil {
|
|
return toJSONError(err)
|
|
}
|
|
reply.AccessKey = cred.AccessKey
|
|
reply.SecretKey = cred.SecretKey
|
|
reply.UIVersion = browser.UIVersion
|
|
return nil
|
|
}
|
|
|
|
// SetAuthArgs - argument for SetAuth
|
|
type SetAuthArgs struct {
|
|
AccessKey string `json:"accessKey"`
|
|
SecretKey string `json:"secretKey"`
|
|
}
|
|
|
|
// SetAuthReply - reply for SetAuth
|
|
type SetAuthReply struct {
|
|
Token string `json:"token"`
|
|
UIVersion string `json:"uiVersion"`
|
|
PeerErrMsgs map[string]string `json:"peerErrMsgs"`
|
|
}
|
|
|
|
// SetAuth - Set accessKey and secretKey credentials.
|
|
func (web *webAPIHandlers) SetAuth(r *http.Request, args *SetAuthArgs, reply *SetAuthReply) error {
|
|
_, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
|
|
// If creds are set through ENV disallow changing credentials.
|
|
if globalIsEnvCreds || globalWORMEnabled || !owner || globalEtcdClient != nil {
|
|
return toJSONError(errChangeCredNotAllowed)
|
|
}
|
|
|
|
creds, err := auth.CreateCredentials(args.AccessKey, args.SecretKey)
|
|
if err != nil {
|
|
return toJSONError(err)
|
|
}
|
|
|
|
// Acquire lock before updating global configuration.
|
|
globalServerConfigMu.Lock()
|
|
defer globalServerConfigMu.Unlock()
|
|
|
|
// Update credentials in memory
|
|
prevCred := globalServerConfig.SetCredential(creds)
|
|
|
|
// Persist updated credentials.
|
|
if err = saveServerConfig(context.Background(), newObjectLayerFn(), globalServerConfig); err != nil {
|
|
// Save the current creds when failed to update.
|
|
globalServerConfig.SetCredential(prevCred)
|
|
logger.LogIf(context.Background(), err)
|
|
return toJSONError(err)
|
|
}
|
|
|
|
reply.Token, err = authenticateWeb(creds.AccessKey, creds.SecretKey)
|
|
if err != nil {
|
|
return toJSONError(err)
|
|
}
|
|
reply.UIVersion = browser.UIVersion
|
|
|
|
return nil
|
|
}
|
|
|
|
// GetAuthReply - Reply current credentials.
|
|
type GetAuthReply struct {
|
|
AccessKey string `json:"accessKey"`
|
|
SecretKey string `json:"secretKey"`
|
|
UIVersion string `json:"uiVersion"`
|
|
}
|
|
|
|
// GetAuth - return accessKey and secretKey credentials.
|
|
func (web *webAPIHandlers) GetAuth(r *http.Request, args *WebGenericArgs, reply *GetAuthReply) error {
|
|
_, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
if !owner {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
creds := globalServerConfig.GetCredential()
|
|
reply.AccessKey = creds.AccessKey
|
|
reply.SecretKey = creds.SecretKey
|
|
reply.UIVersion = browser.UIVersion
|
|
return nil
|
|
}
|
|
|
|
// URLTokenReply contains the reply for CreateURLToken.
|
|
type URLTokenReply struct {
|
|
Token string `json:"token"`
|
|
UIVersion string `json:"uiVersion"`
|
|
}
|
|
|
|
// CreateURLToken creates a URL token (short-lived) for GET requests.
|
|
func (web *webAPIHandlers) CreateURLToken(r *http.Request, args *WebGenericArgs, reply *URLTokenReply) error {
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
|
|
creds := globalServerConfig.GetCredential()
|
|
if !owner {
|
|
var ok bool
|
|
creds, ok = globalIAMSys.GetUser(claims.Subject)
|
|
if !ok {
|
|
return toJSONError(errInvalidAccessKeyID)
|
|
}
|
|
}
|
|
|
|
token, err := authenticateURL(creds.AccessKey, creds.SecretKey)
|
|
if err != nil {
|
|
return toJSONError(err)
|
|
}
|
|
|
|
reply.Token = token
|
|
reply.UIVersion = browser.UIVersion
|
|
return nil
|
|
}
|
|
|
|
// Upload - file upload handler.
|
|
func (web *webAPIHandlers) Upload(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, w, "WebUpload")
|
|
|
|
defer logger.AuditLog(w, r, "WebUpload", mustGetClaimsFromToken(r))
|
|
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeWebErrorResponse(w, errServerNotInitialized)
|
|
return
|
|
}
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
object := vars["object"]
|
|
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
if authErr == errNoAuthToken {
|
|
// Check if anonymous (non-owner) has access to upload objects.
|
|
if !globalPolicySys.IsAllowed(policy.Args{
|
|
Action: policy.PutObjectAction,
|
|
BucketName: bucket,
|
|
ConditionValues: getConditionValues(r, "", ""),
|
|
IsOwner: false,
|
|
ObjectName: object,
|
|
}) {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
} else {
|
|
writeWebErrorResponse(w, authErr)
|
|
return
|
|
}
|
|
}
|
|
|
|
// For authenticated users apply IAM policy.
|
|
if authErr == nil {
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.PutObjectAction,
|
|
BucketName: bucket,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
ObjectName: object,
|
|
}) {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(bucket, false) {
|
|
writeWebErrorResponse(w, errInvalidBucketName)
|
|
return
|
|
}
|
|
|
|
if globalAutoEncryption && !crypto.SSEC.IsRequested(r.Header) {
|
|
r.Header.Add(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
|
|
}
|
|
|
|
// Require Content-Length to be set in the request
|
|
size := r.ContentLength
|
|
if size < 0 {
|
|
writeWebErrorResponse(w, errSizeUnspecified)
|
|
return
|
|
}
|
|
|
|
// Extract incoming metadata if any.
|
|
metadata, err := extractMetadata(context.Background(), r)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
|
|
var pReader *PutObjReader
|
|
var reader io.Reader = r.Body
|
|
actualSize := size
|
|
|
|
hashReader, err := hash.NewReader(reader, size, "", "", actualSize)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
if objectAPI.IsCompressionSupported() && isCompressible(r.Header, object) && size > 0 {
|
|
// Storing the compression metadata.
|
|
metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV1
|
|
metadata[ReservedMetadataPrefix+"actual-size"] = strconv.FormatInt(size, 10)
|
|
|
|
actualReader, err := hash.NewReader(reader, size, "", "", actualSize)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
|
|
// Set compression metrics.
|
|
size = -1 // Since compressed size is un-predictable.
|
|
reader = newSnappyCompressReader(actualReader)
|
|
hashReader, err = hash.NewReader(reader, size, "", "", actualSize)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
}
|
|
pReader = NewPutObjReader(hashReader, nil, nil)
|
|
// get gateway encryption options
|
|
var opts ObjectOptions
|
|
opts, err = putOpts(ctx, r, bucket, object, metadata)
|
|
if err != nil {
|
|
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
|
|
return
|
|
}
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if hasServerSideEncryptionHeader(r.Header) && !hasSuffix(object, slashSeparator) { // handle SSE requests
|
|
rawReader := hashReader
|
|
var objectEncryptionKey []byte
|
|
reader, objectEncryptionKey, err = EncryptRequest(hashReader, r, bucket, object, metadata)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
info := ObjectInfo{Size: size}
|
|
hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", size) // do not try to verify encrypted content
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
|
|
return
|
|
}
|
|
pReader = NewPutObjReader(rawReader, hashReader, objectEncryptionKey)
|
|
}
|
|
}
|
|
|
|
// Ensure that metadata does not contain sensitive information
|
|
crypto.RemoveSensitiveEntries(metadata)
|
|
|
|
// Deny if WORM is enabled
|
|
if globalWORMEnabled {
|
|
if _, err = objectAPI.GetObjectInfo(ctx, bucket, object, opts); err == nil {
|
|
writeWebErrorResponse(w, errMethodNotAllowed)
|
|
return
|
|
}
|
|
}
|
|
|
|
putObject := objectAPI.PutObject
|
|
if !hasServerSideEncryptionHeader(r.Header) && web.CacheAPI() != nil {
|
|
putObject = web.CacheAPI().PutObject
|
|
}
|
|
objInfo, err := putObject(context.Background(), bucket, object, pReader, opts)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if crypto.IsEncrypted(objInfo.UserDefined) {
|
|
switch {
|
|
case crypto.S3.IsEncrypted(objInfo.UserDefined):
|
|
w.Header().Set(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
|
|
case crypto.SSEC.IsRequested(r.Header):
|
|
w.Header().Set(crypto.SSECAlgorithm, r.Header.Get(crypto.SSECAlgorithm))
|
|
w.Header().Set(crypto.SSECKeyMD5, r.Header.Get(crypto.SSECKeyMD5))
|
|
}
|
|
}
|
|
}
|
|
|
|
// Notify object created event.
|
|
sendEvent(eventArgs{
|
|
EventName: event.ObjectCreatedPut,
|
|
BucketName: bucket,
|
|
Object: objInfo,
|
|
ReqParams: extractReqParams(r),
|
|
RespElements: extractRespElements(w),
|
|
UserAgent: r.UserAgent(),
|
|
Host: handlers.GetSourceIP(r),
|
|
})
|
|
}
|
|
|
|
// Download - file download handler.
|
|
func (web *webAPIHandlers) Download(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, w, "WebDownload")
|
|
|
|
defer logger.AuditLog(w, r, "WebDownload", mustGetClaimsFromToken(r))
|
|
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeWebErrorResponse(w, errServerNotInitialized)
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
object := vars["object"]
|
|
token := r.URL.Query().Get("token")
|
|
|
|
claims, owner, authErr := webTokenAuthenticate(token)
|
|
if authErr != nil {
|
|
if authErr == errNoAuthToken {
|
|
// Check if anonymous (non-owner) has access to download objects.
|
|
if !globalPolicySys.IsAllowed(policy.Args{
|
|
Action: policy.GetObjectAction,
|
|
BucketName: bucket,
|
|
ConditionValues: getConditionValues(r, "", ""),
|
|
IsOwner: false,
|
|
ObjectName: object,
|
|
}) {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
} else {
|
|
writeWebErrorResponse(w, authErr)
|
|
return
|
|
}
|
|
}
|
|
|
|
// For authenticated users apply IAM policy.
|
|
if authErr == nil {
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.GetObjectAction,
|
|
BucketName: bucket,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
ObjectName: object,
|
|
}) {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(bucket, false) {
|
|
writeWebErrorResponse(w, errInvalidBucketName)
|
|
return
|
|
}
|
|
|
|
getObjectNInfo := objectAPI.GetObjectNInfo
|
|
if web.CacheAPI() != nil {
|
|
getObjectNInfo = web.CacheAPI().GetObjectNInfo
|
|
}
|
|
|
|
var opts ObjectOptions
|
|
gr, err := getObjectNInfo(ctx, bucket, object, nil, r.Header, readLock, opts)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
defer gr.Close()
|
|
|
|
objInfo := gr.ObjInfo
|
|
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if _, err = DecryptObjectInfo(&objInfo, r.Header); err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Set encryption response headers
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if crypto.IsEncrypted(objInfo.UserDefined) {
|
|
switch {
|
|
case crypto.S3.IsEncrypted(objInfo.UserDefined):
|
|
w.Header().Set(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
|
|
case crypto.SSEC.IsEncrypted(objInfo.UserDefined):
|
|
w.Header().Set(crypto.SSECAlgorithm, r.Header.Get(crypto.SSECAlgorithm))
|
|
w.Header().Set(crypto.SSECKeyMD5, r.Header.Get(crypto.SSECKeyMD5))
|
|
}
|
|
}
|
|
}
|
|
|
|
if err = setObjectHeaders(w, objInfo, nil); err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
|
|
// Add content disposition.
|
|
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", path.Base(objInfo.Name)))
|
|
|
|
setHeadGetRespHeaders(w, r.URL.Query())
|
|
|
|
httpWriter := ioutil.WriteOnClose(w)
|
|
|
|
// Write object content to response body
|
|
if _, err = io.Copy(httpWriter, gr); err != nil {
|
|
if !httpWriter.HasWritten() { // write error response only if no data or headers has been written to client yet
|
|
writeWebErrorResponse(w, err)
|
|
}
|
|
return
|
|
}
|
|
|
|
if err = httpWriter.Close(); err != nil {
|
|
if !httpWriter.HasWritten() { // write error response only if no data or headers has been written to client yet
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Notify object accessed via a GET request.
|
|
sendEvent(eventArgs{
|
|
EventName: event.ObjectAccessedGet,
|
|
BucketName: bucket,
|
|
Object: objInfo,
|
|
ReqParams: extractReqParams(r),
|
|
RespElements: extractRespElements(w),
|
|
UserAgent: r.UserAgent(),
|
|
Host: handlers.GetSourceIP(r),
|
|
})
|
|
}
|
|
|
|
// DownloadZipArgs - Argument for downloading a bunch of files as a zip file.
|
|
// JSON will look like:
|
|
// '{"bucketname":"testbucket","prefix":"john/pics/","objects":["hawaii/","maldives/","sanjose.jpg"]}'
|
|
type DownloadZipArgs struct {
|
|
Objects []string `json:"objects"` // can be files or sub-directories
|
|
Prefix string `json:"prefix"` // current directory in the browser-ui
|
|
BucketName string `json:"bucketname"` // bucket name.
|
|
}
|
|
|
|
// Takes a list of objects and creates a zip file that sent as the response body.
|
|
func (web *webAPIHandlers) DownloadZip(w http.ResponseWriter, r *http.Request) {
|
|
host := handlers.GetSourceIP(r)
|
|
|
|
ctx := newContext(r, w, "WebDownloadZip")
|
|
defer logger.AuditLog(w, r, "WebDownloadZip", mustGetClaimsFromToken(r))
|
|
|
|
var wg sync.WaitGroup
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeWebErrorResponse(w, errServerNotInitialized)
|
|
return
|
|
}
|
|
|
|
// Auth is done after reading the body to accommodate for anonymous requests
|
|
// when bucket policy is enabled.
|
|
var args DownloadZipArgs
|
|
tenKB := 10 * 1024 // To limit r.Body to take care of misbehaving anonymous client.
|
|
decodeErr := json.NewDecoder(io.LimitReader(r.Body, int64(tenKB))).Decode(&args)
|
|
if decodeErr != nil {
|
|
writeWebErrorResponse(w, decodeErr)
|
|
return
|
|
}
|
|
|
|
token := r.URL.Query().Get("token")
|
|
claims, owner, authErr := webTokenAuthenticate(token)
|
|
if authErr != nil {
|
|
if authErr == errNoAuthToken {
|
|
for _, object := range args.Objects {
|
|
// Check if anonymous (non-owner) has access to download objects.
|
|
if !globalPolicySys.IsAllowed(policy.Args{
|
|
Action: policy.GetObjectAction,
|
|
BucketName: args.BucketName,
|
|
ConditionValues: getConditionValues(r, "", ""),
|
|
IsOwner: false,
|
|
ObjectName: pathJoin(args.Prefix, object),
|
|
}) {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
}
|
|
} else {
|
|
writeWebErrorResponse(w, authErr)
|
|
return
|
|
}
|
|
}
|
|
|
|
// For authenticated users apply IAM policy.
|
|
if authErr == nil {
|
|
for _, object := range args.Objects {
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.GetObjectAction,
|
|
BucketName: args.BucketName,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
ObjectName: pathJoin(args.Prefix, object),
|
|
}) {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(args.BucketName, false) {
|
|
writeWebErrorResponse(w, errInvalidBucketName)
|
|
return
|
|
}
|
|
|
|
getObject := objectAPI.GetObject
|
|
if web.CacheAPI() != nil {
|
|
getObject = web.CacheAPI().GetObject
|
|
}
|
|
listObjects := objectAPI.ListObjects
|
|
if web.CacheAPI() != nil {
|
|
listObjects = web.CacheAPI().ListObjects
|
|
}
|
|
|
|
archive := zip.NewWriter(w)
|
|
defer archive.Close()
|
|
|
|
getObjectInfo := objectAPI.GetObjectInfo
|
|
if web.CacheAPI() != nil {
|
|
getObjectInfo = web.CacheAPI().GetObjectInfo
|
|
}
|
|
opts := ObjectOptions{}
|
|
var length int64
|
|
for _, object := range args.Objects {
|
|
// Writes compressed object file to the response.
|
|
zipit := func(objectName string) error {
|
|
info, err := getObjectInfo(ctx, args.BucketName, objectName, opts)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
length = info.Size
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if _, err = DecryptObjectInfo(&info, r.Header); err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return err
|
|
}
|
|
if crypto.IsEncrypted(info.UserDefined) {
|
|
length, _ = info.DecryptedSize()
|
|
}
|
|
}
|
|
length = info.Size
|
|
var actualSize int64
|
|
if info.IsCompressed() {
|
|
// Read the decompressed size from the meta.json.
|
|
actualSize = info.GetActualSize()
|
|
// Set the info.Size to the actualSize.
|
|
info.Size = actualSize
|
|
}
|
|
header := &zip.FileHeader{
|
|
Name: strings.TrimPrefix(objectName, args.Prefix),
|
|
Method: zip.Deflate,
|
|
UncompressedSize64: uint64(length),
|
|
UncompressedSize: uint32(length),
|
|
}
|
|
zipWriter, err := archive.CreateHeader(header)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, errUnexpected)
|
|
return err
|
|
}
|
|
var startOffset int64
|
|
var writer io.Writer
|
|
|
|
if info.IsCompressed() {
|
|
// The decompress metrics are set.
|
|
snappyStartOffset := 0
|
|
snappyLength := actualSize
|
|
|
|
// Open a pipe for compression
|
|
// Where compressWriter is actually passed to the getObject
|
|
decompressReader, compressWriter := io.Pipe()
|
|
snappyReader := snappy.NewReader(decompressReader)
|
|
|
|
// The limit is set to the actual size.
|
|
responseWriter := ioutil.LimitedWriter(zipWriter, int64(snappyStartOffset), snappyLength)
|
|
wg.Add(1) //For closures.
|
|
go func() {
|
|
defer wg.Done()
|
|
// Finally, writes to the client.
|
|
_, perr := io.Copy(responseWriter, snappyReader)
|
|
|
|
// Close the compressWriter if the data is read already.
|
|
// Closing the pipe, releases the writer passed to the getObject.
|
|
compressWriter.CloseWithError(perr)
|
|
}()
|
|
writer = compressWriter
|
|
} else {
|
|
writer = zipWriter
|
|
}
|
|
if objectAPI.IsEncryptionSupported() && crypto.S3.IsEncrypted(info.UserDefined) {
|
|
// Response writer should be limited early on for decryption upto required length,
|
|
// additionally also skipping mod(offset)64KiB boundaries.
|
|
writer = ioutil.LimitedWriter(writer, startOffset%(64*1024), length)
|
|
writer, startOffset, length, err = DecryptBlocksRequest(writer, r,
|
|
args.BucketName, objectName, startOffset, length, info, false)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return err
|
|
}
|
|
}
|
|
httpWriter := ioutil.WriteOnClose(writer)
|
|
if err = getObject(ctx, args.BucketName, objectName, startOffset, length, httpWriter, "", opts); err != nil {
|
|
httpWriter.Close()
|
|
if info.IsCompressed() {
|
|
// Wait for decompression go-routine to retire.
|
|
wg.Wait()
|
|
}
|
|
return err
|
|
}
|
|
if err = httpWriter.Close(); err != nil {
|
|
if !httpWriter.HasWritten() { // write error response only if no data has been written to client yet
|
|
writeWebErrorResponse(w, err)
|
|
return err
|
|
}
|
|
}
|
|
if info.IsCompressed() {
|
|
// Wait for decompression go-routine to retire.
|
|
wg.Wait()
|
|
}
|
|
|
|
// Notify object accessed via a GET request.
|
|
sendEvent(eventArgs{
|
|
EventName: event.ObjectAccessedGet,
|
|
BucketName: args.BucketName,
|
|
Object: info,
|
|
ReqParams: extractReqParams(r),
|
|
RespElements: extractRespElements(w),
|
|
UserAgent: r.UserAgent(),
|
|
Host: host,
|
|
})
|
|
|
|
return nil
|
|
}
|
|
|
|
if !hasSuffix(object, slashSeparator) {
|
|
// If not a directory, compress the file and write it to response.
|
|
err := zipit(pathJoin(args.Prefix, object))
|
|
if err != nil {
|
|
return
|
|
}
|
|
continue
|
|
}
|
|
|
|
// For directories, list the contents recursively and write the objects as compressed
|
|
// date to the response writer.
|
|
marker := ""
|
|
for {
|
|
lo, err := listObjects(context.Background(), args.BucketName, pathJoin(args.Prefix, object), marker, "", 1000)
|
|
if err != nil {
|
|
return
|
|
}
|
|
marker = lo.NextMarker
|
|
for _, obj := range lo.Objects {
|
|
err = zipit(obj.Name)
|
|
if err != nil {
|
|
return
|
|
}
|
|
}
|
|
if !lo.IsTruncated {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// GetBucketPolicyArgs - get bucket policy args.
|
|
type GetBucketPolicyArgs struct {
|
|
BucketName string `json:"bucketName"`
|
|
Prefix string `json:"prefix"`
|
|
}
|
|
|
|
// GetBucketPolicyRep - get bucket policy reply.
|
|
type GetBucketPolicyRep struct {
|
|
UIVersion string `json:"uiVersion"`
|
|
Policy miniogopolicy.BucketPolicy `json:"policy"`
|
|
}
|
|
|
|
// GetBucketPolicy - get bucket policy for the requested prefix.
|
|
func (web *webAPIHandlers) GetBucketPolicy(r *http.Request, args *GetBucketPolicyArgs, reply *GetBucketPolicyRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
return toJSONError(errServerNotInitialized)
|
|
}
|
|
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
// For authenticated users apply IAM policy.
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.GetBucketPolicyAction,
|
|
BucketName: args.BucketName,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
}) {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(args.BucketName, false) {
|
|
return toJSONError(errInvalidBucketName)
|
|
}
|
|
|
|
var policyInfo = &miniogopolicy.BucketAccessPolicy{Version: "2012-10-17"}
|
|
if isRemoteCallRequired(context.Background(), args.BucketName, objectAPI) {
|
|
sr, err := globalDNSConfig.Get(args.BucketName)
|
|
if err != nil {
|
|
if err == dns.ErrNoEntriesFound {
|
|
return toJSONError(BucketNotFound{
|
|
Bucket: args.BucketName,
|
|
}, args.BucketName)
|
|
}
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
client, rerr := getRemoteInstanceClient(r, getHostFromSrv(sr))
|
|
if rerr != nil {
|
|
return toJSONError(rerr, args.BucketName)
|
|
}
|
|
policyStr, err := client.GetBucketPolicy(args.BucketName)
|
|
if err != nil {
|
|
return toJSONError(rerr, args.BucketName)
|
|
}
|
|
bucketPolicy, err := policy.ParseConfig(strings.NewReader(policyStr), args.BucketName)
|
|
if err != nil {
|
|
return toJSONError(rerr, args.BucketName)
|
|
}
|
|
policyInfo, err = PolicyToBucketAccessPolicy(bucketPolicy)
|
|
if err != nil {
|
|
// This should not happen.
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
} else {
|
|
bucketPolicy, err := objectAPI.GetBucketPolicy(context.Background(), args.BucketName)
|
|
if err != nil {
|
|
if _, ok := err.(BucketPolicyNotFound); !ok {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
return err
|
|
}
|
|
|
|
policyInfo, err = PolicyToBucketAccessPolicy(bucketPolicy)
|
|
if err != nil {
|
|
// This should not happen.
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
}
|
|
|
|
reply.UIVersion = browser.UIVersion
|
|
reply.Policy = miniogopolicy.GetPolicy(policyInfo.Statements, args.BucketName, args.Prefix)
|
|
|
|
return nil
|
|
}
|
|
|
|
// ListAllBucketPoliciesArgs - get all bucket policies.
|
|
type ListAllBucketPoliciesArgs struct {
|
|
BucketName string `json:"bucketName"`
|
|
}
|
|
|
|
// BucketAccessPolicy - Collection of canned bucket policy at a given prefix.
|
|
type BucketAccessPolicy struct {
|
|
Bucket string `json:"bucket"`
|
|
Prefix string `json:"prefix"`
|
|
Policy miniogopolicy.BucketPolicy `json:"policy"`
|
|
}
|
|
|
|
// ListAllBucketPoliciesRep - get all bucket policy reply.
|
|
type ListAllBucketPoliciesRep struct {
|
|
UIVersion string `json:"uiVersion"`
|
|
Policies []BucketAccessPolicy `json:"policies"`
|
|
}
|
|
|
|
// ListAllBucketPolicies - get all bucket policy.
|
|
func (web *webAPIHandlers) ListAllBucketPolicies(r *http.Request, args *ListAllBucketPoliciesArgs, reply *ListAllBucketPoliciesRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
return toJSONError(errServerNotInitialized)
|
|
}
|
|
|
|
_, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
|
|
if !owner {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(args.BucketName, false) {
|
|
return toJSONError(errInvalidBucketName)
|
|
}
|
|
|
|
var policyInfo = new(miniogopolicy.BucketAccessPolicy)
|
|
if isRemoteCallRequired(context.Background(), args.BucketName, objectAPI) {
|
|
sr, err := globalDNSConfig.Get(args.BucketName)
|
|
if err != nil {
|
|
if err == dns.ErrNoEntriesFound {
|
|
return toJSONError(BucketNotFound{
|
|
Bucket: args.BucketName,
|
|
}, args.BucketName)
|
|
}
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
core, rerr := getRemoteInstanceClient(r, getHostFromSrv(sr))
|
|
if rerr != nil {
|
|
return toJSONError(rerr, args.BucketName)
|
|
}
|
|
var policyStr string
|
|
policyStr, err = core.Client.GetBucketPolicy(args.BucketName)
|
|
if err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
if policyStr != "" {
|
|
if err = json.Unmarshal([]byte(policyStr), policyInfo); err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
}
|
|
} else {
|
|
bucketPolicy, err := objectAPI.GetBucketPolicy(context.Background(), args.BucketName)
|
|
if err != nil {
|
|
if _, ok := err.(BucketPolicyNotFound); !ok {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
}
|
|
policyInfo, err = PolicyToBucketAccessPolicy(bucketPolicy)
|
|
if err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
}
|
|
|
|
reply.UIVersion = browser.UIVersion
|
|
for prefix, policy := range miniogopolicy.GetPolicies(policyInfo.Statements, args.BucketName, "") {
|
|
bucketName, objectPrefix := urlPath2BucketObjectName(prefix)
|
|
objectPrefix = strings.TrimSuffix(objectPrefix, "*")
|
|
reply.Policies = append(reply.Policies, BucketAccessPolicy{
|
|
Bucket: bucketName,
|
|
Prefix: objectPrefix,
|
|
Policy: policy,
|
|
})
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// SetBucketPolicyWebArgs - set bucket policy args.
|
|
type SetBucketPolicyWebArgs struct {
|
|
BucketName string `json:"bucketName"`
|
|
Prefix string `json:"prefix"`
|
|
Policy string `json:"policy"`
|
|
}
|
|
|
|
// SetBucketPolicy - set bucket policy.
|
|
func (web *webAPIHandlers) SetBucketPolicy(r *http.Request, args *SetBucketPolicyWebArgs, reply *WebGenericRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
reply.UIVersion = browser.UIVersion
|
|
|
|
if objectAPI == nil {
|
|
return toJSONError(errServerNotInitialized)
|
|
}
|
|
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
|
|
// For authenticated users apply IAM policy.
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.Subject,
|
|
Action: iampolicy.PutBucketPolicyAction,
|
|
BucketName: args.BucketName,
|
|
ConditionValues: getConditionValues(r, "", claims.Subject),
|
|
IsOwner: owner,
|
|
}) {
|
|
return toJSONError(errAccessDenied)
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(args.BucketName, false) {
|
|
return toJSONError(errInvalidBucketName)
|
|
}
|
|
|
|
policyType := miniogopolicy.BucketPolicy(args.Policy)
|
|
if !policyType.IsValidBucketPolicy() {
|
|
return &json2.Error{
|
|
Message: "Invalid policy type " + args.Policy,
|
|
}
|
|
}
|
|
|
|
ctx := context.Background()
|
|
|
|
if isRemoteCallRequired(context.Background(), args.BucketName, objectAPI) {
|
|
sr, err := globalDNSConfig.Get(args.BucketName)
|
|
if err != nil {
|
|
if err == dns.ErrNoEntriesFound {
|
|
return toJSONError(BucketNotFound{
|
|
Bucket: args.BucketName,
|
|
}, args.BucketName)
|
|
}
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
core, rerr := getRemoteInstanceClient(r, getHostFromSrv(sr))
|
|
if rerr != nil {
|
|
return toJSONError(rerr, args.BucketName)
|
|
}
|
|
var policyStr string
|
|
// Use the abstracted API instead of core, such that
|
|
// NoSuchBucketPolicy errors are automatically handled.
|
|
policyStr, err = core.Client.GetBucketPolicy(args.BucketName)
|
|
if err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
var policyInfo = &miniogopolicy.BucketAccessPolicy{Version: "2012-10-17"}
|
|
if policyStr != "" {
|
|
if err = json.Unmarshal([]byte(policyStr), policyInfo); err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
}
|
|
|
|
policyInfo.Statements = miniogopolicy.SetPolicy(policyInfo.Statements, policyType, args.BucketName, args.Prefix)
|
|
if len(policyInfo.Statements) == 0 {
|
|
if err = core.SetBucketPolicy(args.BucketName, ""); err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
bucketPolicy, err := BucketAccessPolicyToPolicy(policyInfo)
|
|
if err != nil {
|
|
// This should not happen.
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
policyData, err := json.Marshal(bucketPolicy)
|
|
if err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
if err = core.SetBucketPolicy(args.BucketName, string(policyData)); err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
} else {
|
|
bucketPolicy, err := objectAPI.GetBucketPolicy(ctx, args.BucketName)
|
|
if err != nil {
|
|
if _, ok := err.(BucketPolicyNotFound); !ok {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
}
|
|
policyInfo, err := PolicyToBucketAccessPolicy(bucketPolicy)
|
|
if err != nil {
|
|
// This should not happen.
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
policyInfo.Statements = miniogopolicy.SetPolicy(policyInfo.Statements, policyType, args.BucketName, args.Prefix)
|
|
if len(policyInfo.Statements) == 0 {
|
|
if err = objectAPI.DeleteBucketPolicy(ctx, args.BucketName); err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
globalPolicySys.Remove(args.BucketName)
|
|
return nil
|
|
}
|
|
|
|
bucketPolicy, err = BucketAccessPolicyToPolicy(policyInfo)
|
|
if err != nil {
|
|
// This should not happen.
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
// Parse validate and save bucket policy.
|
|
if err := objectAPI.SetBucketPolicy(ctx, args.BucketName, bucketPolicy); err != nil {
|
|
return toJSONError(err, args.BucketName)
|
|
}
|
|
|
|
globalPolicySys.Set(args.BucketName, *bucketPolicy)
|
|
globalNotificationSys.SetBucketPolicy(ctx, args.BucketName, bucketPolicy)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// PresignedGetArgs - presigned-get API args.
|
|
type PresignedGetArgs struct {
|
|
// Host header required for signed headers.
|
|
HostName string `json:"host"`
|
|
|
|
// Bucket name of the object to be presigned.
|
|
BucketName string `json:"bucket"`
|
|
|
|
// Object name to be presigned.
|
|
ObjectName string `json:"object"`
|
|
|
|
// Expiry in seconds.
|
|
Expiry int64 `json:"expiry"`
|
|
}
|
|
|
|
// PresignedGetRep - presigned-get URL reply.
|
|
type PresignedGetRep struct {
|
|
UIVersion string `json:"uiVersion"`
|
|
// Presigned URL of the object.
|
|
URL string `json:"url"`
|
|
}
|
|
|
|
// PresignedGET - returns presigned-Get url.
|
|
func (web *webAPIHandlers) PresignedGet(r *http.Request, args *PresignedGetArgs, reply *PresignedGetRep) error {
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil {
|
|
return toJSONError(authErr)
|
|
}
|
|
var creds auth.Credentials
|
|
if !owner {
|
|
var ok bool
|
|
creds, ok = globalIAMSys.GetUser(claims.Subject)
|
|
if !ok {
|
|
return toJSONError(errInvalidAccessKeyID)
|
|
}
|
|
} else {
|
|
creds = globalServerConfig.GetCredential()
|
|
}
|
|
|
|
region := globalServerConfig.GetRegion()
|
|
if args.BucketName == "" || args.ObjectName == "" {
|
|
return &json2.Error{
|
|
Message: "Bucket and Object are mandatory arguments.",
|
|
}
|
|
}
|
|
|
|
// Check if bucket is a reserved bucket name or invalid.
|
|
if isReservedOrInvalidBucket(args.BucketName, false) {
|
|
return toJSONError(errInvalidBucketName)
|
|
}
|
|
|
|
reply.UIVersion = browser.UIVersion
|
|
reply.URL = presignedGet(args.HostName, args.BucketName, args.ObjectName, args.Expiry, creds, region)
|
|
return nil
|
|
}
|
|
|
|
// Returns presigned url for GET method.
|
|
func presignedGet(host, bucket, object string, expiry int64, creds auth.Credentials, region string) string {
|
|
accessKey := creds.AccessKey
|
|
secretKey := creds.SecretKey
|
|
|
|
date := UTCNow()
|
|
dateStr := date.Format(iso8601Format)
|
|
credential := fmt.Sprintf("%s/%s", accessKey, getScope(date, region))
|
|
|
|
var expiryStr = "604800" // Default set to be expire in 7days.
|
|
if expiry < 604800 && expiry > 0 {
|
|
expiryStr = strconv.FormatInt(expiry, 10)
|
|
}
|
|
|
|
query := url.Values{}
|
|
query.Set("X-Amz-Algorithm", signV4Algorithm)
|
|
query.Set("X-Amz-Credential", credential)
|
|
query.Set("X-Amz-Date", dateStr)
|
|
query.Set("X-Amz-Expires", expiryStr)
|
|
query.Set("X-Amz-SignedHeaders", "host")
|
|
queryStr := s3utils.QueryEncode(query)
|
|
|
|
path := "/" + path.Join(bucket, object)
|
|
|
|
// "host" is the only header required to be signed for Presigned URLs.
|
|
extractedSignedHeaders := make(http.Header)
|
|
extractedSignedHeaders.Set("host", host)
|
|
canonicalRequest := getCanonicalRequest(extractedSignedHeaders, unsignedPayload, queryStr, path, "GET")
|
|
stringToSign := getStringToSign(canonicalRequest, date, getScope(date, region))
|
|
signingKey := getSigningKey(secretKey, date, region, serviceS3)
|
|
signature := getSignature(signingKey, stringToSign)
|
|
|
|
// Construct the final presigned URL.
|
|
return host + s3utils.EncodePath(path) + "?" + queryStr + "&" + "X-Amz-Signature=" + signature
|
|
}
|
|
|
|
// toJSONError converts regular errors into more user friendly
|
|
// and consumable error message for the browser UI.
|
|
func toJSONError(err error, params ...string) (jerr *json2.Error) {
|
|
apiErr := toWebAPIError(err)
|
|
jerr = &json2.Error{
|
|
Message: apiErr.Description,
|
|
}
|
|
switch apiErr.Code {
|
|
// Reserved bucket name provided.
|
|
case "AllAccessDisabled":
|
|
if len(params) > 0 {
|
|
jerr = &json2.Error{
|
|
Message: fmt.Sprintf("All access to this bucket %s has been disabled.", params[0]),
|
|
}
|
|
}
|
|
// Bucket name invalid with custom error message.
|
|
case "InvalidBucketName":
|
|
if len(params) > 0 {
|
|
jerr = &json2.Error{
|
|
Message: fmt.Sprintf("Bucket Name %s is invalid. Lowercase letters, period, hyphen, numerals are the only allowed characters and should be minimum 3 characters in length.", params[0]),
|
|
}
|
|
}
|
|
// Bucket not found custom error message.
|
|
case "NoSuchBucket":
|
|
if len(params) > 0 {
|
|
jerr = &json2.Error{
|
|
Message: fmt.Sprintf("The specified bucket %s does not exist.", params[0]),
|
|
}
|
|
}
|
|
// Object not found custom error message.
|
|
case "NoSuchKey":
|
|
if len(params) > 1 {
|
|
jerr = &json2.Error{
|
|
Message: fmt.Sprintf("The specified key %s does not exist", params[1]),
|
|
}
|
|
}
|
|
// Add more custom error messages here with more context.
|
|
}
|
|
return jerr
|
|
}
|
|
|
|
// toWebAPIError - convert into error into APIError.
|
|
func toWebAPIError(err error) APIError {
|
|
switch err {
|
|
case errServerNotInitialized:
|
|
return APIError{
|
|
Code: "XMinioServerNotInitialized",
|
|
HTTPStatusCode: http.StatusServiceUnavailable,
|
|
Description: err.Error(),
|
|
}
|
|
case errAuthentication, auth.ErrInvalidAccessKeyLength, auth.ErrInvalidSecretKeyLength, errInvalidAccessKeyID:
|
|
return APIError{
|
|
Code: "AccessDenied",
|
|
HTTPStatusCode: http.StatusForbidden,
|
|
Description: err.Error(),
|
|
}
|
|
case errSizeUnspecified:
|
|
return APIError{
|
|
Code: "InvalidRequest",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: err.Error(),
|
|
}
|
|
case errChangeCredNotAllowed:
|
|
return APIError{
|
|
Code: "MethodNotAllowed",
|
|
HTTPStatusCode: http.StatusMethodNotAllowed,
|
|
Description: err.Error(),
|
|
}
|
|
case errInvalidBucketName:
|
|
return APIError{
|
|
Code: "InvalidBucketName",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: err.Error(),
|
|
}
|
|
case errInvalidArgument:
|
|
return APIError{
|
|
Code: "InvalidArgument",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: err.Error(),
|
|
}
|
|
case errEncryptedObject:
|
|
return getAPIError(ErrSSEEncryptedObject)
|
|
case errInvalidEncryptionParameters:
|
|
return getAPIError(ErrInvalidEncryptionParameters)
|
|
case errObjectTampered:
|
|
return getAPIError(ErrObjectTampered)
|
|
case errMethodNotAllowed:
|
|
return getAPIError(ErrMethodNotAllowed)
|
|
}
|
|
|
|
// Convert error type to api error code.
|
|
switch err.(type) {
|
|
case StorageFull:
|
|
return getAPIError(ErrStorageFull)
|
|
case BucketNotFound:
|
|
return getAPIError(ErrNoSuchBucket)
|
|
case BucketExists:
|
|
return getAPIError(ErrBucketAlreadyOwnedByYou)
|
|
case BucketNameInvalid:
|
|
return getAPIError(ErrInvalidBucketName)
|
|
case hash.BadDigest:
|
|
return getAPIError(ErrBadDigest)
|
|
case IncompleteBody:
|
|
return getAPIError(ErrIncompleteBody)
|
|
case ObjectExistsAsDirectory:
|
|
return getAPIError(ErrObjectExistsAsDirectory)
|
|
case ObjectNotFound:
|
|
return getAPIError(ErrNoSuchKey)
|
|
case ObjectNameInvalid:
|
|
return getAPIError(ErrNoSuchKey)
|
|
case InsufficientWriteQuorum:
|
|
return getAPIError(ErrWriteQuorum)
|
|
case InsufficientReadQuorum:
|
|
return getAPIError(ErrReadQuorum)
|
|
case NotImplemented:
|
|
return APIError{
|
|
Code: "NotImplemented",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: "Functionality not implemented",
|
|
}
|
|
}
|
|
|
|
// Log unexpected and unhandled errors.
|
|
logger.LogIf(context.Background(), err)
|
|
return APIError{
|
|
Code: "InternalError",
|
|
HTTPStatusCode: http.StatusInternalServerError,
|
|
Description: err.Error(),
|
|
}
|
|
}
|
|
|
|
// writeWebErrorResponse - set HTTP status code and write error description to the body.
|
|
func writeWebErrorResponse(w http.ResponseWriter, err error) {
|
|
apiErr := toWebAPIError(err)
|
|
w.WriteHeader(apiErr.HTTPStatusCode)
|
|
w.Write([]byte(apiErr.Description))
|
|
}
|