mirror of
https://github.com/minio/minio.git
synced 2024-12-25 06:35:56 -05:00
824 lines
24 KiB
Go
824 lines
24 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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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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"time"
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jwtgo "github.com/dgrijalva/jwt-go"
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jwtreq "github.com/dgrijalva/jwt-go/request"
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"github.com/dustin/go-humanize"
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"github.com/gorilla/mux"
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"github.com/gorilla/rpc/v2/json2"
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"github.com/minio/minio-go/pkg/policy"
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"github.com/minio/miniobrowser"
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)
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// isJWTReqAuthenticated validates if any incoming request to be a
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// valid JWT authenticated request.
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func isJWTReqAuthenticated(req *http.Request) bool {
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jwt, err := newJWT(defaultJWTExpiry)
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if err != nil {
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errorIf(err, "unable to initialize a new JWT")
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return false
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}
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var reqCallback jwtgo.Keyfunc
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reqCallback = func(token *jwtgo.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwtgo.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
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}
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return []byte(jwt.SecretAccessKey), nil
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}
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token, err := jwtreq.ParseFromRequest(req, jwtreq.AuthorizationHeaderExtractor, reqCallback)
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if err != nil {
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errorIf(err, "token parsing failed")
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return false
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}
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return token.Valid
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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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MinioEnvVars []string
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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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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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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.MinioEnvVars = os.Environ()
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reply.MinioVersion = Version
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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 = miniobrowser.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 *GenericArgs, reply *StorageInfoRep) error {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return &json2.Error{Message: errServerNotInitialized.Error()}
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}
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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reply.StorageInfo = objectAPI.StorageInfo()
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reply.UIVersion = miniobrowser.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 - make a 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 &json2.Error{Message: errServerNotInitialized.Error()}
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}
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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if err := objectAPI.MakeBucket(args.BucketName); err != nil {
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return &json2.Error{Message: err.Error()}
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}
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reply.UIVersion = miniobrowser.UIVersion
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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 &json2.Error{Message: errServerNotInitialized.Error()}
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}
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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buckets, err := objectAPI.ListBuckets()
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if err != nil {
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return &json2.Error{Message: err.Error()}
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}
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for _, bucket := range buckets {
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// List all buckets which are not private.
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if bucket.Name != path.Base(reservedBucket) {
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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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reply.UIVersion = miniobrowser.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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}
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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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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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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return &json2.Error{Message: errServerNotInitialized.Error()}
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}
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marker := ""
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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for {
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lo, err := objectAPI.ListObjects(args.BucketName, args.Prefix, marker, "/", 1000)
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if err != nil {
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return &json2.Error{Message: err.Error()}
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}
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marker = lo.NextMarker
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for _, obj := range lo.Objects {
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reply.Objects = append(reply.Objects, WebObjectInfo{
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Key: obj.Name,
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LastModified: obj.ModTime,
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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 _, prefix := range lo.Prefixes {
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reply.Objects = append(reply.Objects, WebObjectInfo{
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Key: prefix,
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})
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}
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if !lo.IsTruncated {
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break
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}
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}
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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}
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// RemoveObjectArgs - args to remove an object
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type RemoveObjectArgs struct {
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TargetHost string `json:"targetHost"`
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BucketName string `json:"bucketName"`
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ObjectName string `json:"objectName"`
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}
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// RemoveObject - removes an object.
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func (web *webAPIHandlers) RemoveObject(r *http.Request, args *RemoveObjectArgs, reply *WebGenericRep) error {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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return &json2.Error{Message: errServerNotInitialized.Error()}
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}
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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if err := objectAPI.DeleteObject(args.BucketName, args.ObjectName); err != nil {
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objErr := errorCause(err)
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switch objErr.(type) {
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case ObjectNotFound:
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// Ignore object not found error.
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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default:
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return &json2.Error{Message: err.Error()}
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}
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}
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// Notify object deleted event.
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eventNotify(eventData{
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Type: ObjectRemovedDelete,
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Bucket: args.BucketName,
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ObjInfo: ObjectInfo{
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Name: args.ObjectName,
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},
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ReqParams: map[string]string{
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"sourceIPAddress": r.RemoteAddr,
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},
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})
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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}
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// LoginArgs - login arguments.
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type LoginArgs struct {
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Username string `json:"username" form:"username"`
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Password string `json:"password" form:"password"`
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}
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// LoginRep - login reply.
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type LoginRep struct {
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Token string `json:"token"`
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UIVersion string `json:"uiVersion"`
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}
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// Login - user login handler.
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func (web *webAPIHandlers) Login(r *http.Request, args *LoginArgs, reply *LoginRep) error {
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jwt, err := newJWT(defaultJWTExpiry)
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if err != nil {
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return &json2.Error{Message: err.Error()}
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}
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if err = jwt.Authenticate(args.Username, args.Password); err != nil {
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return &json2.Error{Message: err.Error()}
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}
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token, err := jwt.GenerateToken(args.Username)
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if err != nil {
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return &json2.Error{Message: err.Error()}
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}
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reply.Token = token
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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}
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// GenerateAuthReply - reply for GenerateAuth
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type GenerateAuthReply struct {
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AccessKey string `json:"accessKey"`
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SecretKey string `json:"secretKey"`
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UIVersion string `json:"uiVersion"`
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}
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func (web webAPIHandlers) GenerateAuth(r *http.Request, args *WebGenericArgs, reply *GenerateAuthReply) error {
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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cred := mustGenAccessKeys()
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reply.AccessKey = cred.AccessKeyID
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reply.SecretKey = cred.SecretAccessKey
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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}
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// SetAuthArgs - argument for SetAuth
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type SetAuthArgs struct {
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AccessKey string `json:"accessKey"`
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SecretKey string `json:"secretKey"`
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}
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// SetAuthReply - reply for SetAuth
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type SetAuthReply struct {
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Token string `json:"token"`
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UIVersion string `json:"uiVersion"`
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PeerErrMsgs map[string]string `json:"peerErrMsgs"`
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}
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// SetAuth - Set accessKey and secretKey credentials.
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func (web *webAPIHandlers) SetAuth(r *http.Request, args *SetAuthArgs, reply *SetAuthReply) error {
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
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if !isValidAccessKey(args.AccessKey) {
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return &json2.Error{Message: errInvalidAccessKeyLength.Error()}
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}
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if !isValidSecretKey(args.SecretKey) {
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return &json2.Error{Message: errInvalidSecretKeyLength.Error()}
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}
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cred := credential{args.AccessKey, args.SecretKey}
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unexpErrsMsg := "ALERT: Unexpected error(s) happened - please check the server logs."
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gaveUpMsg := func(errMsg error, moreErrors bool) *json2.Error {
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msg := fmt.Sprintf(
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"ALERT: We gave up due to: '%s', but there were more errors. Please check the server logs.",
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errMsg.Error(),
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)
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if moreErrors {
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return &json2.Error{Message: msg}
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}
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return &json2.Error{Message: errMsg.Error()}
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}
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// Notify all other Minio peers to update credentials
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errsMap := updateCredsOnPeers(cred)
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// Update local credentials
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serverConfig.SetCredential(cred)
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if err := serverConfig.Save(); err != nil {
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errsMap[globalMinioAddr] = err
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}
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// Log all the peer related error messages, and populate the
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// PeerErrMsgs map.
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reply.PeerErrMsgs = make(map[string]string)
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for svr, errVal := range errsMap {
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tErr := fmt.Errorf("Unable to change credentials on %s: %v", svr, errVal)
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errorIf(tErr, "Credentials change could not be propagated successfully!")
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reply.PeerErrMsgs[svr] = errVal.Error()
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}
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// If we were unable to update locally, we return an error to the user/browser.
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if errsMap[globalMinioAddr] != nil {
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// Since the error message may be very long to display
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// on the browser, we tell the user to check the
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// server logs.
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return &json2.Error{Message: unexpErrsMsg}
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}
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// Did we have peer errors?
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var moreErrors bool
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if len(errsMap) > 0 {
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moreErrors = true
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}
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// If we were able to update locally, we try to generate a new
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// token and complete the request.
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jwt, err := newJWT(defaultJWTExpiry) // JWT Expiry set to 24Hrs.
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if err != nil {
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return gaveUpMsg(err, moreErrors)
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}
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if err = jwt.Authenticate(args.AccessKey, args.SecretKey); err != nil {
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return gaveUpMsg(err, moreErrors)
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}
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token, err := jwt.GenerateToken(args.AccessKey)
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if err != nil {
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return gaveUpMsg(err, moreErrors)
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}
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reply.Token = token
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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}
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// GetAuthReply - Reply current credentials.
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type GetAuthReply struct {
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AccessKey string `json:"accessKey"`
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SecretKey string `json:"secretKey"`
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UIVersion string `json:"uiVersion"`
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}
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// GetAuth - return accessKey and secretKey credentials.
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func (web *webAPIHandlers) GetAuth(r *http.Request, args *WebGenericArgs, reply *GetAuthReply) error {
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if !isJWTReqAuthenticated(r) {
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return &json2.Error{Message: errAuthentication.Error()}
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}
|
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creds := serverConfig.GetCredential()
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reply.AccessKey = creds.AccessKeyID
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reply.SecretKey = creds.SecretAccessKey
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reply.UIVersion = miniobrowser.UIVersion
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return nil
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}
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|
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// Upload - file upload handler.
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func (web *webAPIHandlers) Upload(w http.ResponseWriter, r *http.Request) {
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objectAPI := web.ObjectAPI()
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if objectAPI == nil {
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writeWebErrorResponse(w, errServerNotInitialized)
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return
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}
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|
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if !isJWTReqAuthenticated(r) {
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writeWebErrorResponse(w, errAuthentication)
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return
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}
|
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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object := vars["object"]
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|
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// Extract incoming metadata if any.
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metadata := extractMetadataFromHeader(r.Header)
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|
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sha256sum := ""
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if _, err := objectAPI.PutObject(bucket, object, -1, r.Body, metadata, sha256sum); err != nil {
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writeWebErrorResponse(w, err)
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return
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}
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|
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// Fetch object info for notifications.
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objInfo, err := objectAPI.GetObjectInfo(bucket, object)
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if err != nil {
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errorIf(err, "Unable to fetch object info for \"%s\"", path.Join(bucket, object))
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return
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}
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|
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// Notify object created event.
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eventNotify(eventData{
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Type: ObjectCreatedPut,
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Bucket: bucket,
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ObjInfo: objInfo,
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ReqParams: map[string]string{
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"sourceIPAddress": r.RemoteAddr,
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},
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})
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}
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|
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// Download - file download handler.
|
|
func (web *webAPIHandlers) Download(w http.ResponseWriter, r *http.Request) {
|
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objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
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writeWebErrorResponse(w, errServerNotInitialized)
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return
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}
|
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|
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vars := mux.Vars(r)
|
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bucket := vars["bucket"]
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object := vars["object"]
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tokenStr := r.URL.Query().Get("token")
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|
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jwt, err := newJWT(defaultJWTExpiry) // Expiry set to 24Hrs.
|
|
if err != nil {
|
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errorIf(err, "error in getting new JWT")
|
|
return
|
|
}
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|
|
token, e := jwtgo.Parse(tokenStr, func(token *jwtgo.Token) (interface{}, error) {
|
|
if _, ok := token.Method.(*jwtgo.SigningMethodHMAC); !ok {
|
|
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
|
|
}
|
|
return []byte(jwt.SecretAccessKey), nil
|
|
})
|
|
if e != nil || !token.Valid {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
// Add content disposition.
|
|
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", path.Base(object)))
|
|
|
|
objInfo, err := objectAPI.GetObjectInfo(bucket, object)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
offset := int64(0)
|
|
err = objectAPI.GetObject(bucket, object, offset, objInfo.Size, w)
|
|
if err != nil {
|
|
/// No need to print error, response writer already written to.
|
|
return
|
|
}
|
|
}
|
|
|
|
// writeWebErrorResponse - set HTTP status code and write error description to the body.
|
|
func writeWebErrorResponse(w http.ResponseWriter, err error) {
|
|
if err == errAuthentication {
|
|
w.WriteHeader(http.StatusForbidden)
|
|
w.Write([]byte(err.Error()))
|
|
return
|
|
}
|
|
if err == errServerNotInitialized {
|
|
w.WriteHeader(http.StatusServiceUnavailable)
|
|
w.Write([]byte(err.Error()))
|
|
return
|
|
}
|
|
|
|
// Convert error type to api error code.
|
|
var apiErrCode APIErrorCode
|
|
switch err.(type) {
|
|
case StorageFull:
|
|
apiErrCode = ErrStorageFull
|
|
case BucketNotFound:
|
|
apiErrCode = ErrNoSuchBucket
|
|
case BucketNameInvalid:
|
|
apiErrCode = ErrInvalidBucketName
|
|
case BadDigest:
|
|
apiErrCode = ErrBadDigest
|
|
case IncompleteBody:
|
|
apiErrCode = ErrIncompleteBody
|
|
case ObjectExistsAsDirectory:
|
|
apiErrCode = ErrObjectExistsAsDirectory
|
|
case ObjectNotFound:
|
|
apiErrCode = ErrNoSuchKey
|
|
case ObjectNameInvalid:
|
|
apiErrCode = ErrNoSuchKey
|
|
case InsufficientWriteQuorum:
|
|
apiErrCode = ErrWriteQuorum
|
|
case InsufficientReadQuorum:
|
|
apiErrCode = ErrReadQuorum
|
|
default:
|
|
apiErrCode = ErrInternalError
|
|
}
|
|
apiErr := getAPIError(apiErrCode)
|
|
w.WriteHeader(apiErr.HTTPStatusCode)
|
|
w.Write([]byte(apiErr.Description))
|
|
}
|
|
|
|
// 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 policy.BucketPolicy `json:"policy"`
|
|
}
|
|
|
|
func readBucketAccessPolicy(objAPI ObjectLayer, bucketName string) (policy.BucketAccessPolicy, error) {
|
|
bucketPolicyReader, err := readBucketPolicyJSON(bucketName, objAPI)
|
|
if err != nil {
|
|
if _, ok := err.(BucketPolicyNotFound); ok {
|
|
return policy.BucketAccessPolicy{Version: "2012-10-17"}, nil
|
|
}
|
|
return policy.BucketAccessPolicy{}, err
|
|
}
|
|
|
|
bucketPolicyBuf, err := ioutil.ReadAll(bucketPolicyReader)
|
|
if err != nil {
|
|
return policy.BucketAccessPolicy{}, err
|
|
}
|
|
|
|
policyInfo := policy.BucketAccessPolicy{}
|
|
err = json.Unmarshal(bucketPolicyBuf, &policyInfo)
|
|
if err != nil {
|
|
return policy.BucketAccessPolicy{}, err
|
|
}
|
|
|
|
return policyInfo, nil
|
|
|
|
}
|
|
|
|
// GetBucketPolicy - get bucket policy.
|
|
func (web *webAPIHandlers) GetBucketPolicy(r *http.Request, args *GetBucketPolicyArgs, reply *GetBucketPolicyRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
return &json2.Error{Message: errServerNotInitialized.Error()}
|
|
}
|
|
|
|
if !isJWTReqAuthenticated(r) {
|
|
return &json2.Error{Message: errAuthentication.Error()}
|
|
}
|
|
|
|
policyInfo, err := readBucketAccessPolicy(objectAPI, args.BucketName)
|
|
if err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
|
|
reply.UIVersion = miniobrowser.UIVersion
|
|
reply.Policy = policy.GetPolicy(policyInfo.Statements, args.BucketName, args.Prefix)
|
|
|
|
return nil
|
|
}
|
|
|
|
// ListAllBucketPoliciesArgs - get all bucket policies.
|
|
type ListAllBucketPoliciesArgs struct {
|
|
BucketName string `json:"bucketName"`
|
|
}
|
|
|
|
// Collection of canned bucket policy at a given prefix.
|
|
type bucketAccessPolicy struct {
|
|
Prefix string `json:"prefix"`
|
|
Policy policy.BucketPolicy `json:"policy"`
|
|
}
|
|
|
|
// ListAllBucketPoliciesRep - get all bucket policy reply.
|
|
type ListAllBucketPoliciesRep struct {
|
|
UIVersion string `json:"uiVersion"`
|
|
Policies []bucketAccessPolicy `json:"policies"`
|
|
}
|
|
|
|
// GetllBucketPolicy - get all bucket policy.
|
|
func (web *webAPIHandlers) ListAllBucketPolicies(r *http.Request, args *ListAllBucketPoliciesArgs, reply *ListAllBucketPoliciesRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
return &json2.Error{Message: errServerNotInitialized.Error()}
|
|
}
|
|
|
|
if !isJWTReqAuthenticated(r) {
|
|
return &json2.Error{Message: errAuthentication.Error()}
|
|
}
|
|
|
|
policyInfo, err := readBucketAccessPolicy(objectAPI, args.BucketName)
|
|
if err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
|
|
reply.UIVersion = miniobrowser.UIVersion
|
|
for prefix, policy := range policy.GetPolicies(policyInfo.Statements, args.BucketName) {
|
|
reply.Policies = append(reply.Policies, bucketAccessPolicy{
|
|
Prefix: prefix,
|
|
Policy: policy,
|
|
})
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SetBucketPolicyArgs - set bucket policy args.
|
|
type SetBucketPolicyArgs 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 *SetBucketPolicyArgs, reply *WebGenericRep) error {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
return &json2.Error{Message: errServerNotInitialized.Error()}
|
|
}
|
|
|
|
if !isJWTReqAuthenticated(r) {
|
|
return &json2.Error{Message: errAuthentication.Error()}
|
|
}
|
|
|
|
bucketP := policy.BucketPolicy(args.Policy)
|
|
if !bucketP.IsValidBucketPolicy() {
|
|
return &json2.Error{Message: "Invalid policy type " + args.Policy}
|
|
}
|
|
|
|
policyInfo, err := readBucketAccessPolicy(objectAPI, args.BucketName)
|
|
if err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
policyInfo.Statements = policy.SetPolicy(policyInfo.Statements, bucketP, args.BucketName, args.Prefix)
|
|
if len(policyInfo.Statements) == 0 {
|
|
if err = persistAndNotifyBucketPolicyChange(args.BucketName, policyChange{true, nil}, objectAPI); err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
reply.UIVersion = miniobrowser.UIVersion
|
|
return nil
|
|
}
|
|
data, err := json.Marshal(policyInfo)
|
|
if err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
|
|
// Parse bucket policy.
|
|
var policy = &bucketPolicy{}
|
|
err = parseBucketPolicy(bytes.NewReader(data), policy)
|
|
if err != nil {
|
|
errorIf(err, "Unable to parse bucket policy.")
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
|
|
// Parse check bucket policy.
|
|
if s3Error := checkBucketPolicyResources(args.BucketName, policy); s3Error != ErrNone {
|
|
return &json2.Error{Message: getAPIError(s3Error).Description}
|
|
}
|
|
|
|
// TODO: update policy statements according to bucket name,
|
|
// prefix and policy arguments.
|
|
if err := persistAndNotifyBucketPolicyChange(args.BucketName, policyChange{false, policy}, objectAPI); err != nil {
|
|
return &json2.Error{Message: err.Error()}
|
|
}
|
|
reply.UIVersion = miniobrowser.UIVersion
|
|
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"`
|
|
}
|
|
|
|
// 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 {
|
|
if web.ObjectAPI() == nil {
|
|
return &json2.Error{Message: errServerNotInitialized.Error()}
|
|
}
|
|
if !isJWTReqAuthenticated(r) {
|
|
return &json2.Error{Message: errAuthentication.Error()}
|
|
}
|
|
if args.BucketName == "" || args.ObjectName == "" {
|
|
return &json2.Error{Message: "Bucket, Object are mandatory arguments."}
|
|
}
|
|
reply.UIVersion = miniobrowser.UIVersion
|
|
reply.URL = presignedGet(args.HostName, args.BucketName, args.ObjectName)
|
|
return nil
|
|
}
|
|
|
|
// Returns presigned url for GET method.
|
|
func presignedGet(host, bucket, object string) string {
|
|
cred := serverConfig.GetCredential()
|
|
region := serverConfig.GetRegion()
|
|
|
|
accessKey := cred.AccessKeyID
|
|
secretKey := cred.SecretAccessKey
|
|
|
|
date := time.Now().UTC()
|
|
dateStr := date.Format(iso8601Format)
|
|
credential := fmt.Sprintf("%s/%s", accessKey, getScope(date, region))
|
|
|
|
query := strings.Join([]string{
|
|
"X-Amz-Algorithm=" + signV4Algorithm,
|
|
"X-Amz-Credential=" + strings.Replace(credential, "/", "%2F", -1),
|
|
"X-Amz-Date=" + dateStr,
|
|
"X-Amz-Expires=" + "604800", // Default set to be expire in 7days.
|
|
"X-Amz-SignedHeaders=host",
|
|
}, "&")
|
|
|
|
path := "/" + path.Join(bucket, object)
|
|
|
|
// Headers are empty, since "host" is the only header required to be signed for Presigned URLs.
|
|
var extractedSignedHeaders http.Header
|
|
|
|
canonicalRequest := getCanonicalRequest(extractedSignedHeaders, unsignedPayload, query, path, "GET", host)
|
|
stringToSign := getStringToSign(canonicalRequest, date, region)
|
|
signingKey := getSigningKey(secretKey, date, region)
|
|
signature := getSignature(signingKey, stringToSign)
|
|
|
|
// Construct the final presigned URL.
|
|
return host + path + "?" + query + "&" + "X-Amz-Signature=" + signature
|
|
}
|