mirror of
https://github.com/minio/minio.git
synced 2024-12-25 14:45:54 -05:00
e71ef905f9
Add support for sse-s3 encryption with vault as KMS. Also refactoring code to make use of headers and functions defined in crypto package and clean up duplicated code.
1291 lines
37 KiB
Go
1291 lines
37 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016, 2017, 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"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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"time"
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humanize "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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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/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/hash"
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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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if !isHTTPRequestValid(r) {
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return toJSONError(errAuthentication)
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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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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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if !isHTTPRequestValid(r) {
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return toJSONError(errAuthentication)
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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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if !isHTTPRequestValid(r) {
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return toJSONError(errAuthentication)
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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) {
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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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if !isHTTPRequestValid(r) {
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return toJSONError(errAuthentication)
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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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reply.UIVersion = browser.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 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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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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// 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 {
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return toJSONError(err)
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}
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for _, dnsRecord := range dnsBuckets {
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bucketName := strings.Trim(dnsRecord.Key, "/")
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reply.Buckets = append(reply.Buckets, WebBucketInfo{
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Name: bucketName,
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CreationDate: dnsRecord.CreationDate,
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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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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 = 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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// 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.GetObjectAction,
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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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// 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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if authErr := webRequestAuthenticate(r); authErr != nil {
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if authErr == errAuthentication {
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return toJSONError(authErr)
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}
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// Error out anonymous (non-owner) has no access download or upload objects.
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if !readable && !writable {
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return errAuthentication
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}
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reply.Writable = writable
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}
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lo, err := listObjects(context.Background(), args.BucketName, args.Prefix, args.Marker, slashSeparator, 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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for i := range lo.Objects {
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if crypto.IsEncrypted(lo.Objects[i].UserDefined) {
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lo.Objects[i].Size, err = lo.Objects[i].DecryptedSize()
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if err != nil {
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return toJSONError(err)
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}
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}
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}
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reply.NextMarker = lo.NextMarker
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reply.IsTruncated = lo.IsTruncated
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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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return nil
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}
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// RemoveObjectArgs - args to remove an object, JSON will look like.
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//
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// {
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// "bucketname": "testbucket",
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// "objects": [
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// "photos/hawaii/",
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// "photos/maldives/",
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// "photos/sanjose.jpg"
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// ]
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// }
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type RemoveObjectArgs struct {
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Objects []string `json:"objects"` // Contains objects, prefixes.
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BucketName string `json:"bucketname"` // Contains bucket name.
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}
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// RemoveObject - removes an object, or all the objects at a given prefix.
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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 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 !isHTTPRequestValid(r) {
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return toJSONError(errAuthentication)
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}
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if args.BucketName == "" || len(args.Objects) == 0 {
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return toJSONError(errInvalidArgument)
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}
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var err error
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next:
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for _, objectName := range args.Objects {
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// If not a directory, remove the object.
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if !hasSuffix(objectName, slashSeparator) && objectName != "" {
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// Deny if WORM is enabled
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if globalWORMEnabled {
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if _, err = objectAPI.GetObjectInfo(context.Background(), args.BucketName, objectName); err == nil {
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return toJSONError(errMethodNotAllowed)
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}
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}
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if err = deleteObject(nil, objectAPI, web.CacheAPI(), args.BucketName, objectName, r); err != nil {
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break next
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}
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continue
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}
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// For directories, list the contents recursively and remove.
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marker := ""
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for {
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var lo ListObjectsInfo
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lo, err = listObjects(context.Background(), args.BucketName, objectName, marker, "", 1000)
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if err != nil {
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break next
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}
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marker = lo.NextMarker
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for _, obj := range lo.Objects {
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err = deleteObject(nil, objectAPI, web.CacheAPI(), args.BucketName, obj.Name, r)
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if err != nil {
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break next
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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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}
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if err != nil && !isErrObjectNotFound(err) {
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// Ignore object not found error.
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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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// 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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}
|
|
|
|
// Login - user login handler.
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func (web *webAPIHandlers) Login(r *http.Request, args *LoginArgs, reply *LoginRep) error {
|
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token, err := authenticateWeb(args.Username, args.Password)
|
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if err != nil {
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return toJSONError(err)
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}
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reply.Token = token
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reply.UIVersion = browser.UIVersion
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return nil
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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"`
|
|
UIVersion string `json:"uiVersion"`
|
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}
|
|
|
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func (web webAPIHandlers) GenerateAuth(r *http.Request, args *WebGenericArgs, reply *GenerateAuthReply) error {
|
|
if !isHTTPRequestValid(r) {
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|
return toJSONError(errAuthentication)
|
|
}
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|
cred, err := auth.GetNewCredentials()
|
|
if err != nil {
|
|
return toJSONError(err)
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}
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|
reply.AccessKey = cred.AccessKey
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reply.SecretKey = cred.SecretKey
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reply.UIVersion = browser.UIVersion
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return nil
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}
|
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|
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// SetAuthArgs - argument for SetAuth
|
|
type SetAuthArgs struct {
|
|
AccessKey string `json:"accessKey"`
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|
SecretKey string `json:"secretKey"`
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}
|
|
|
|
// SetAuthReply - reply for SetAuth
|
|
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 {
|
|
if !isHTTPRequestValid(r) {
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|
return toJSONError(errAuthentication)
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}
|
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|
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// If creds are set through ENV disallow changing credentials.
|
|
if globalIsEnvCreds || globalWORMEnabled {
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return toJSONError(errChangeCredNotAllowed)
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}
|
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|
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creds, err := auth.CreateCredentials(args.AccessKey, args.SecretKey)
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|
if err != nil {
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return toJSONError(err)
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|
}
|
|
|
|
// Acquire lock before updating global configuration.
|
|
globalServerConfigMu.Lock()
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|
defer globalServerConfigMu.Unlock()
|
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|
|
// Update credentials in memory
|
|
prevCred := globalServerConfig.SetCredential(creds)
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|
|
// Persist updated credentials.
|
|
if err = saveServerConfig(newObjectLayerFn(), globalServerConfig); err != nil {
|
|
// Save the current creds when failed to update.
|
|
globalServerConfig.SetCredential(prevCred)
|
|
logger.LogIf(context.Background(), err)
|
|
return toJSONError(err)
|
|
}
|
|
|
|
if errs := globalNotificationSys.LoadCredentials(); len(errs) != 0 {
|
|
reply.PeerErrMsgs = make(map[string]string)
|
|
for host, err := range errs {
|
|
err = fmt.Errorf("Unable to update credentials on server %v: %v", host, err)
|
|
logger.LogIf(context.Background(), err)
|
|
reply.PeerErrMsgs[host.String()] = err.Error()
|
|
}
|
|
} else {
|
|
reply.Token = newAuthToken()
|
|
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 {
|
|
if !isHTTPRequestValid(r) {
|
|
return toJSONError(errAuthentication)
|
|
}
|
|
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 {
|
|
if !isHTTPRequestValid(r) {
|
|
return toJSONError(errAuthentication)
|
|
}
|
|
|
|
creds := globalServerConfig.GetCredential()
|
|
|
|
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) {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeWebErrorResponse(w, errServerNotInitialized)
|
|
return
|
|
}
|
|
|
|
putObject := objectAPI.PutObject
|
|
if web.CacheAPI() != nil {
|
|
putObject = web.CacheAPI().PutObject
|
|
}
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
object := vars["object"]
|
|
|
|
if authErr := webRequestAuthenticate(r); authErr != nil {
|
|
if authErr == errAuthentication {
|
|
writeWebErrorResponse(w, errAuthentication)
|
|
return
|
|
}
|
|
|
|
// 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
|
|
}
|
|
}
|
|
|
|
// 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(w, ErrInternalError, r.URL)
|
|
return
|
|
}
|
|
|
|
hashReader, err := hash.NewReader(r.Body, size, "", "")
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
|
|
// Deny if WORM is enabled
|
|
if globalWORMEnabled {
|
|
if _, err = objectAPI.GetObjectInfo(context.Background(), bucket, object); err == nil {
|
|
writeWebErrorResponse(w, errMethodNotAllowed)
|
|
return
|
|
}
|
|
}
|
|
|
|
objInfo, err := putObject(context.Background(), bucket, object, hashReader, metadata)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
|
|
// Notify object created event.
|
|
sendEvent(eventArgs{
|
|
EventName: event.ObjectCreatedPut,
|
|
BucketName: bucket,
|
|
Object: objInfo,
|
|
ReqParams: extractReqParams(r),
|
|
})
|
|
}
|
|
|
|
// Download - file download handler.
|
|
func (web *webAPIHandlers) Download(w http.ResponseWriter, r *http.Request) {
|
|
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")
|
|
|
|
if !isAuthTokenValid(token) {
|
|
// 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
|
|
}
|
|
}
|
|
|
|
getObject := objectAPI.GetObject
|
|
if web.CacheAPI() != nil {
|
|
getObject = web.CacheAPI().GetObject
|
|
}
|
|
getObjectInfo := objectAPI.GetObjectInfo
|
|
if web.CacheAPI() != nil {
|
|
getObjectInfo = web.CacheAPI().GetObjectInfo
|
|
}
|
|
objInfo, err := getObjectInfo(context.Background(), bucket, object)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if apiErr, _ := DecryptObjectInfo(&objInfo, r.Header); apiErr != ErrNone {
|
|
writeErrorResponse(w, apiErr, r.URL)
|
|
return
|
|
}
|
|
}
|
|
var startOffset int64
|
|
length := objInfo.Size
|
|
var writer io.Writer
|
|
writer = w
|
|
if objectAPI.IsEncryptionSupported() && crypto.S3.IsEncrypted(objInfo.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, bucket, object, startOffset, length, objInfo, false)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, err)
|
|
return
|
|
}
|
|
w.Header().Set(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
|
|
}
|
|
httpWriter := ioutil.WriteOnClose(writer)
|
|
|
|
// Add content disposition.
|
|
w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", path.Base(object)))
|
|
|
|
if err = getObject(context.Background(), bucket, object, 0, -1, httpWriter, ""); err != nil {
|
|
/// No need to print error, response writer already written to.
|
|
return
|
|
}
|
|
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
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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) {
|
|
objectAPI := web.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeWebErrorResponse(w, errServerNotInitialized)
|
|
return
|
|
}
|
|
getObject := objectAPI.GetObject
|
|
if web.CacheAPI() != nil {
|
|
getObject = web.CacheAPI().GetObject
|
|
}
|
|
listObjects := objectAPI.ListObjects
|
|
if web.CacheAPI() != nil {
|
|
listObjects = web.CacheAPI().ListObjects
|
|
}
|
|
// 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")
|
|
if !isAuthTokenValid(token) {
|
|
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
|
|
}
|
|
}
|
|
}
|
|
|
|
archive := zip.NewWriter(w)
|
|
defer archive.Close()
|
|
getObjectInfo := objectAPI.GetObjectInfo
|
|
if web.CacheAPI() != nil {
|
|
getObjectInfo = web.CacheAPI().GetObjectInfo
|
|
}
|
|
for _, object := range args.Objects {
|
|
// Writes compressed object file to the response.
|
|
zipit := func(objectName string) error {
|
|
info, err := getObjectInfo(context.Background(), args.BucketName, objectName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if objectAPI.IsEncryptionSupported() {
|
|
if apiErr, _ := DecryptObjectInfo(&info, r.Header); apiErr != ErrNone {
|
|
writeErrorResponse(w, apiErr, r.URL)
|
|
return err
|
|
}
|
|
}
|
|
header := &zip.FileHeader{
|
|
Name: strings.TrimPrefix(objectName, args.Prefix),
|
|
Method: zip.Deflate,
|
|
UncompressedSize64: uint64(info.Size),
|
|
UncompressedSize: uint32(info.Size),
|
|
}
|
|
wr, err := archive.CreateHeader(header)
|
|
if err != nil {
|
|
writeWebErrorResponse(w, errUnexpected)
|
|
return err
|
|
}
|
|
var startOffset int64
|
|
length := info.Size
|
|
var writer io.Writer
|
|
writer = wr
|
|
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(context.Background(), args.BucketName, objectName, 0, length, httpWriter, ""); err != nil {
|
|
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
|
|
}
|
|
}
|
|
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)
|
|
}
|
|
|
|
if !isHTTPRequestValid(r) {
|
|
return toJSONError(errAuthentication)
|
|
}
|
|
|
|
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)
|
|
}
|
|
|
|
if !isHTTPRequestValid(r) {
|
|
return toJSONError(errAuthentication)
|
|
}
|
|
|
|
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 {
|
|
// This should not happen.
|
|
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)
|
|
}
|
|
|
|
if !isHTTPRequestValid(r) {
|
|
return toJSONError(errAuthentication)
|
|
}
|
|
|
|
policyType := miniogopolicy.BucketPolicy(args.Policy)
|
|
if !policyType.IsValidBucketPolicy() {
|
|
return &json2.Error{
|
|
Message: "Invalid policy type " + args.Policy,
|
|
}
|
|
}
|
|
|
|
ctx := context.Background()
|
|
|
|
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 {
|
|
if !isHTTPRequestValid(r) {
|
|
return toJSONError(errAuthentication)
|
|
}
|
|
|
|
if args.BucketName == "" || args.ObjectName == "" {
|
|
return &json2.Error{
|
|
Message: "Bucket and Object are mandatory arguments.",
|
|
}
|
|
}
|
|
reply.UIVersion = browser.UIVersion
|
|
reply.URL = presignedGet(args.HostName, args.BucketName, args.ObjectName, args.Expiry)
|
|
return nil
|
|
}
|
|
|
|
// Returns presigned url for GET method.
|
|
func presignedGet(host, bucket, object string, expiry int64) string {
|
|
cred := globalServerConfig.GetCredential()
|
|
region := globalServerConfig.GetRegion()
|
|
|
|
accessKey := cred.AccessKey
|
|
secretKey := cred.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)
|
|
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 {
|
|
if err == errAuthentication {
|
|
return APIError{
|
|
Code: "AccessDenied",
|
|
HTTPStatusCode: http.StatusForbidden,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == errServerNotInitialized {
|
|
return APIError{
|
|
Code: "XMinioServerNotInitialized",
|
|
HTTPStatusCode: http.StatusServiceUnavailable,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == auth.ErrInvalidAccessKeyLength {
|
|
return APIError{
|
|
Code: "AccessDenied",
|
|
HTTPStatusCode: http.StatusForbidden,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == auth.ErrInvalidSecretKeyLength {
|
|
return APIError{
|
|
Code: "AccessDenied",
|
|
HTTPStatusCode: http.StatusForbidden,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == errInvalidAccessKeyID {
|
|
return APIError{
|
|
Code: "AccessDenied",
|
|
HTTPStatusCode: http.StatusForbidden,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == errSizeUnspecified {
|
|
return APIError{
|
|
Code: "InvalidRequest",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == errChangeCredNotAllowed {
|
|
return APIError{
|
|
Code: "MethodNotAllowed",
|
|
HTTPStatusCode: http.StatusMethodNotAllowed,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == errInvalidBucketName {
|
|
return APIError{
|
|
Code: "InvalidBucketName",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == errInvalidArgument {
|
|
return APIError{
|
|
Code: "InvalidArgument",
|
|
HTTPStatusCode: http.StatusBadRequest,
|
|
Description: err.Error(),
|
|
}
|
|
} else if err == 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 PolicyNesting:
|
|
return getAPIError(ErrPolicyNesting)
|
|
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))
|
|
}
|