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minio/object-handlers.go

582 lines
18 KiB

/*
* Minio Cloud 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 implieapi.Filesystem.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"net/http"
"net/url"
"strconv"
"github.com/gorilla/mux"
"github.com/minio/minio/pkg/fs"
)
const (
maxPartsList = 1000
)
// supportedGetReqParams - supported request parameters for GET
// presigned request.
var supportedGetReqParams = map[string]string{
"response-expires": "Expires",
"response-content-type": "Content-Type",
"response-cache-control": "Cache-Control",
"response-content-disposition": "Content-Disposition",
}
// setResponseHeaders - set any requested parameters as response headers.
func setResponseHeaders(w http.ResponseWriter, reqParams url.Values) {
for k, v := range reqParams {
if header, ok := supportedGetReqParams[k]; ok {
w.Header()[header] = v
}
}
}
// GetObjectHandler - GET Object
// ----------
// This implementation of the GET operation retrieves object. To use GET,
// you must have READ access to the object.
func (api storageAPI) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
if !isSignV4ReqAuthenticated(api.Signature, r) {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
metadata, err := api.Filesystem.GetObjectMetadata(bucket, object)
if err != nil {
errorIf(err.Trace(), "GetObject failed.", nil)
switch err.ToGoError().(type) {
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
var hrange *httpRange
hrange, err = getRequestedRange(r.Header.Get("Range"), metadata.Size)
if err != nil {
writeErrorResponse(w, r, InvalidRange, r.URL.Path)
return
}
// Set standard object headers.
setObjectHeaders(w, metadata, hrange)
// Set any additional ruested response headers.
setResponseHeaders(w, r.URL.Query())
// Get the object.
if _, err = api.Filesystem.GetObject(w, bucket, object, hrange.start, hrange.length); err != nil {
errorIf(err.Trace(), "GetObject failed.", nil)
return
}
}
// HeadObjectHandler - HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (api storageAPI) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
if !isSignV4ReqAuthenticated(api.Signature, r) {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
metadata, err := api.Filesystem.GetObjectMetadata(bucket, object)
if err != nil {
switch err.ToGoError().(type) {
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
setObjectHeaders(w, metadata, nil)
w.WriteHeader(http.StatusOK)
}
// PutObjectHandler - PUT Object
// ----------
// This implementation of the PUT operation adds an object to a bucket.
func (api storageAPI) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
// get Content-MD5 sent by client and verify if valid
md5 := r.Header.Get("Content-MD5")
if !isValidMD5(md5) {
writeErrorResponse(w, r, InvalidDigest, r.URL.Path)
return
}
/// if Content-Length is unknown/missing, deny the request
size := r.ContentLength
if size == -1 && !contains(r.TransferEncoding, "chunked") {
writeErrorResponse(w, r, MissingContentLength, r.URL.Path)
return
}
/// maximum Upload size for objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, r, EntityTooLarge, r.URL.Path)
return
}
// Set http request for signature.
auth := api.Signature.SetHTTPRequestToVerify(r)
// For presigned requests verify them right here.
if isRequestPresignedSignatureV4(r) {
ok, err := auth.DoesPresignedSignatureMatch()
if err != nil {
errorIf(err.Trace(r.URL.String()), "Presigned signature verification failed.", nil)
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
if !ok {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
auth = nil
}
// Create object.
metadata, err := api.Filesystem.CreateObject(bucket, object, md5, size, r.Body, auth)
if err != nil {
errorIf(err.Trace(), "CreateObject failed.", nil)
switch err.ToGoError().(type) {
case fs.RootPathFull:
writeErrorResponse(w, r, RootPathFull, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BadDigest:
writeErrorResponse(w, r, BadDigest, r.URL.Path)
case fs.SignDoesNotMatch:
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
case fs.IncompleteBody:
writeErrorResponse(w, r, IncompleteBody, r.URL.Path)
case fs.InvalidDigest:
writeErrorResponse(w, r, InvalidDigest, r.URL.Path)
case fs.ObjectExistsAsPrefix:
writeErrorResponse(w, r, ObjectExistsAsPrefix, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
if metadata.MD5 != "" {
w.Header().Set("ETag", "\""+metadata.MD5+"\"")
}
writeSuccessResponse(w, nil)
}
/// Multipart storageAPI
// NewMultipartUploadHandler - New multipart upload
func (api storageAPI) NewMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
if !isSignV4ReqAuthenticated(api.Signature, r) {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
uploadID, err := api.Filesystem.NewMultipartUpload(bucket, object)
if err != nil {
errorIf(err.Trace(), "NewMultipartUpload failed.", nil)
switch err.ToGoError().(type) {
case fs.RootPathFull:
writeErrorResponse(w, r, RootPathFull, r.URL.Path)
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
response := generateInitiateMultipartUploadResponse(bucket, object, uploadID)
encodedSuccessResponse := encodeSuccessResponse(response)
// write headers
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
// PutObjectPartHandler - Upload part
func (api storageAPI) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
// get Content-MD5 sent by client and verify if valid
md5 := r.Header.Get("Content-MD5")
if !isValidMD5(md5) {
writeErrorResponse(w, r, InvalidDigest, r.URL.Path)
return
}
/// if Content-Length is unknown/missing, throw away
size := r.ContentLength
if size == -1 {
writeErrorResponse(w, r, MissingContentLength, r.URL.Path)
return
}
/// maximum Upload size for multipart objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, r, EntityTooLarge, r.URL.Path)
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
var partID int
{
var err error
partID, err = strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(w, r, InvalidPart, r.URL.Path)
return
}
}
// Set http request for signature.
auth := api.Signature.SetHTTPRequestToVerify(r)
// For presigned requests verify right here.
if isRequestPresignedSignatureV4(r) {
ok, err := auth.DoesPresignedSignatureMatch()
if err != nil {
errorIf(err.Trace(r.URL.String()), "Presigned signature verification failed.", nil)
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
if !ok {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
// Signature verified, set this to nil payload verification
// not necessary.
auth = nil
}
calculatedMD5, err := api.Filesystem.CreateObjectPart(bucket, object, uploadID, md5, partID, size, r.Body, auth)
if err != nil {
errorIf(err.Trace(), "CreateObjectPart failed.", nil)
switch err.ToGoError().(type) {
case fs.RootPathFull:
writeErrorResponse(w, r, RootPathFull, r.URL.Path)
case fs.InvalidUploadID:
writeErrorResponse(w, r, NoSuchUpload, r.URL.Path)
case fs.BadDigest:
writeErrorResponse(w, r, BadDigest, r.URL.Path)
case fs.SignDoesNotMatch:
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
case fs.IncompleteBody:
writeErrorResponse(w, r, IncompleteBody, r.URL.Path)
case fs.InvalidDigest:
writeErrorResponse(w, r, InvalidDigest, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
if calculatedMD5 != "" {
w.Header().Set("ETag", "\""+calculatedMD5+"\"")
}
writeSuccessResponse(w, nil)
}
// AbortMultipartUploadHandler - Abort multipart upload
func (api storageAPI) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
if !isSignV4ReqAuthenticated(api.Signature, r) {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
objectResourcesMetadata := getObjectResources(r.URL.Query())
err := api.Filesystem.AbortMultipartUpload(bucket, object, objectResourcesMetadata.UploadID)
if err != nil {
errorIf(err.Trace(), "AbortMutlipartUpload failed.", nil)
switch err.ToGoError().(type) {
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.InvalidUploadID:
writeErrorResponse(w, r, NoSuchUpload, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
writeSuccessNoContent(w)
}
// ListObjectPartsHandler - List object parts
func (api storageAPI) ListObjectPartsHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
if !isSignV4ReqAuthenticated(api.Signature, r) {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
objectResourcesMetadata := getObjectResources(r.URL.Query())
if objectResourcesMetadata.PartNumberMarker < 0 {
writeErrorResponse(w, r, InvalidPartNumberMarker, r.URL.Path)
return
}
if objectResourcesMetadata.MaxParts < 0 {
writeErrorResponse(w, r, InvalidMaxParts, r.URL.Path)
return
}
if objectResourcesMetadata.MaxParts == 0 {
objectResourcesMetadata.MaxParts = maxPartsList
}
objectResourcesMetadata, err := api.Filesystem.ListObjectParts(bucket, object, objectResourcesMetadata)
if err != nil {
errorIf(err.Trace(), "ListObjectParts failed.", nil)
switch err.ToGoError().(type) {
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.InvalidUploadID:
writeErrorResponse(w, r, NoSuchUpload, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
response := generateListPartsResponse(objectResourcesMetadata)
encodedSuccessResponse := encodeSuccessResponse(response)
// write headers.
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
// CompleteMultipartUploadHandler - Complete multipart upload
func (api storageAPI) CompleteMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
// Set http request for signature.
auth := api.Signature.SetHTTPRequestToVerify(r)
// For presigned requests verify right here.
if isRequestPresignedSignatureV4(r) {
ok, err := auth.DoesPresignedSignatureMatch()
if err != nil {
errorIf(err.Trace(r.URL.String()), "Presigned signature verification failed.", nil)
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
if !ok {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
auth = nil
}
// Extract object resources.
objectResourcesMetadata := getObjectResources(r.URL.Query())
// Complete multipart upload.
metadata, err := api.Filesystem.CompleteMultipartUpload(bucket, object, objectResourcesMetadata.UploadID, r.Body, api.Signature)
if err != nil {
errorIf(err.Trace(), "CompleteMultipartUpload failed.", nil)
switch err.ToGoError().(type) {
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.InvalidUploadID:
writeErrorResponse(w, r, NoSuchUpload, r.URL.Path)
case fs.InvalidPart:
writeErrorResponse(w, r, InvalidPart, r.URL.Path)
case fs.InvalidPartOrder:
writeErrorResponse(w, r, InvalidPartOrder, r.URL.Path)
case fs.SignDoesNotMatch:
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
case fs.IncompleteBody:
writeErrorResponse(w, r, IncompleteBody, r.URL.Path)
case fs.MalformedXML:
writeErrorResponse(w, r, MalformedXML, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
return
}
response := generateCompleteMultpartUploadResponse(bucket, object, r.URL.String(), metadata.MD5)
encodedSuccessResponse := encodeSuccessResponse(response)
// write headers
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
/// Delete storageAPI
// DeleteObjectHandler - Delete object
func (api storageAPI) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if isRequestRequiresACLCheck(r) {
if api.Filesystem.IsPrivateBucket(bucket) || api.Filesystem.IsReadOnlyBucket(bucket) {
writeErrorResponse(w, r, AccessDenied, r.URL.Path)
return
}
}
if !isSignV4ReqAuthenticated(api.Signature, r) {
writeErrorResponse(w, r, SignatureDoesNotMatch, r.URL.Path)
return
}
err := api.Filesystem.DeleteObject(bucket, object)
if err != nil {
errorIf(err.Trace(), "DeleteObject failed.", nil)
switch err.ToGoError().(type) {
case fs.BucketNameInvalid:
writeErrorResponse(w, r, InvalidBucketName, r.URL.Path)
case fs.BucketNotFound:
writeErrorResponse(w, r, NoSuchBucket, r.URL.Path)
case fs.ObjectNotFound:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
case fs.ObjectNameInvalid:
writeErrorResponse(w, r, NoSuchKey, r.URL.Path)
default:
writeErrorResponse(w, r, InternalError, r.URL.Path)
}
}
writeSuccessNoContent(w)
}