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minio/pkg/server/api/bucket-handlers.go

436 lines
14 KiB

/*
* Minimalist Object Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package api
import (
"net/http"
"github.com/gorilla/mux"
"github.com/minio/minio/pkg/donut"
"github.com/minio/minio/pkg/iodine"
"github.com/minio/minio/pkg/utils/log"
)
func (api Minio) isValidOp(w http.ResponseWriter, req *http.Request, acceptsContentType contentType) bool {
vars := mux.Vars(req)
bucket := vars["bucket"]
bucketMetadata, err := api.Donut.GetBucketMetadata(bucket, nil)
switch iodine.ToError(err).(type) {
case donut.BucketNotFound:
{
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
return false
}
case donut.BucketNameInvalid:
{
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
return false
}
case nil:
if _, err := StripAccessKeyID(req.Header.Get("Authorization")); err != nil {
if bucketMetadata.ACL.IsPrivate() {
return true
//uncomment this when we have webcli
//writeErrorResponse(w, req, AccessDenied, acceptsContentType, req.URL.Path)
//return false
}
if bucketMetadata.ACL.IsPublicRead() && req.Method == "PUT" {
return true
//uncomment this when we have webcli
//writeErrorResponse(w, req, AccessDenied, acceptsContentType, req.URL.Path)
//return false
}
}
default:
{
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
return true
}
// ListMultipartUploadsHandler - GET Bucket (List Multipart uploads)
// -------------------------
// This operation lists in-progress multipart uploads. An in-progress
// multipart upload is a multipart upload that has been initiated,
// using the Initiate Multipart Upload request, but has not yet been completed or aborted.
// This operation returns at most 1,000 multipart uploads in the response.
//
func (api Minio) ListMultipartUploadsHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
resources := getBucketMultipartResources(req.URL.Query())
if resources.MaxUploads < 0 {
writeErrorResponse(w, req, InvalidMaxUploads, acceptsContentType, req.URL.Path)
return
}
if resources.MaxUploads == 0 {
resources.MaxUploads = maxObjectList
}
vars := mux.Vars(req)
bucket := vars["bucket"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
resources, err := api.Donut.ListMultipartUploads(bucket, resources, signature)
switch iodine.ToError(err).(type) {
case nil: // success
{
// generate response
response := generateListMultipartUploadsResponse(bucket, resources)
encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
// write headers
setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
// write body
w.Write(encodedSuccessResponse)
}
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// ListObjectsHandler - GET Bucket (List Objects)
// -------------------------
// This implementation of the GET operation returns some or all (up to 1000)
// of the objects in a bucket. You can use the request parameters as selection
// criteria to return a subset of the objects in a bucket.
//
func (api Minio) ListObjectsHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
if isRequestUploads(req.URL.Query()) {
api.ListMultipartUploadsHandler(w, req)
return
}
resources := getBucketResources(req.URL.Query())
if resources.Maxkeys < 0 {
writeErrorResponse(w, req, InvalidMaxKeys, acceptsContentType, req.URL.Path)
return
}
if resources.Maxkeys == 0 {
resources.Maxkeys = maxObjectList
}
vars := mux.Vars(req)
bucket := vars["bucket"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
objects, resources, err := api.Donut.ListObjects(bucket, resources, signature)
switch iodine.ToError(err).(type) {
case nil:
// generate response
response := generateListObjectsResponse(bucket, objects, resources)
encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
// write headers
setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
// write body
w.Write(encodedSuccessResponse)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
case donut.ObjectNotFound:
writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
case donut.ObjectNameInvalid:
writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// ListBucketsHandler - GET Service
// -----------
// This implementation of the GET operation returns a list of all buckets
// owned by the authenticated sender of the request.
func (api Minio) ListBucketsHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
// uncomment this when we have webcli
// without access key credentials one cannot list buckets
// if _, err := StripAccessKeyID(req); err != nil {
// writeErrorResponse(w, req, AccessDenied, acceptsContentType, req.URL.Path)
// return
// }
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
buckets, err := api.Donut.ListBuckets(signature)
switch iodine.ToError(err).(type) {
case nil:
// generate response
response := generateListBucketsResponse(buckets)
encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
// write headers
setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
// write response
w.Write(encodedSuccessResponse)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// PutBucketHandler - PUT Bucket
// ----------
// This implementation of the PUT operation creates a new bucket for authenticated request
func (api Minio) PutBucketHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
// uncomment this when we have webcli
// without access key credentials one cannot create a bucket
// if _, err := StripAccessKeyID(req); err != nil {
// writeErrorResponse(w, req, AccessDenied, acceptsContentType, req.URL.Path)
// return
// }
if isRequestBucketACL(req.URL.Query()) {
api.PutBucketACLHandler(w, req)
return
}
// read from 'x-amz-acl'
aclType := getACLType(req)
if aclType == unsupportedACLType {
writeErrorResponse(w, req, NotImplemented, acceptsContentType, req.URL.Path)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
// if body of request is non-nil then check for validity of Content-Length
if req.Body != nil {
/// if Content-Length missing, deny the request
size := req.Header.Get("Content-Length")
if size == "" {
writeErrorResponse(w, req, MissingContentLength, acceptsContentType, req.URL.Path)
return
}
}
err := api.Donut.MakeBucket(bucket, getACLTypeString(aclType), req.Body, signature)
switch iodine.ToError(err).(type) {
case nil:
// Make sure to add Location information here only for bucket
w.Header().Set("Location", "/"+bucket)
writeSuccessResponse(w, acceptsContentType)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.TooManyBuckets:
writeErrorResponse(w, req, TooManyBuckets, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
case donut.BucketExists:
writeErrorResponse(w, req, BucketAlreadyExists, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// PutBucketACLHandler - PUT Bucket ACL
// ----------
// This implementation of the PUT operation modifies the bucketACL for authenticated request
func (api Minio) PutBucketACLHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
// read from 'x-amz-acl'
aclType := getACLType(req)
if aclType == unsupportedACLType {
writeErrorResponse(w, req, NotImplemented, acceptsContentType, req.URL.Path)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
err := api.Donut.SetBucketMetadata(bucket, map[string]string{"acl": getACLTypeString(aclType)}, signature)
switch iodine.ToError(err).(type) {
case nil:
writeSuccessResponse(w, acceptsContentType)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// HeadBucketHandler - HEAD Bucket
// ----------
// This operation is useful to determine if a bucket exists.
// The operation returns a 200 OK if the bucket exists and you
// have permission to access it. Otherwise, the operation might
// return responses such as 404 Not Found and 403 Forbidden.
func (api Minio) HeadBucketHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
vars := mux.Vars(req)
bucket := vars["bucket"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
_, err := api.Donut.GetBucketMetadata(bucket, signature)
switch iodine.ToError(err).(type) {
case nil:
writeSuccessResponse(w, acceptsContentType)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}