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Copy pathobject-handlers.go
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946 lines (870 loc) · 29.7 KB
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/*
* 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 implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"encoding/hex"
"encoding/xml"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"sort"
"strconv"
"strings"
"time"
fastSha256 "github.com/minio/minio/pkg/crypto/sha256"
mux "github.com/gorilla/mux"
)
// 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",
}
// setGetRespHeaders - set any requested parameters as response headers.
func setGetRespHeaders(w http.ResponseWriter, reqParams url.Values) {
for k, v := range reqParams {
if header, ok := supportedGetReqParams[k]; ok {
w.Header()[header] = v
}
}
}
// errAllowableNotFound - For an anon user, return 404 if have ListBucket, 403 otherwise
// this is in keeping with the permissions sections of the docs of both:
// HEAD Object: http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectHEAD.html
// GET Object: http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
func errAllowableObjectNotFound(bucket string, r *http.Request) APIErrorCode {
if getRequestAuthType(r) == authTypeAnonymous {
//we care about the bucket as a whole, not a particular resource
url := *r.URL
url.Path = "/" + bucket
if s3Error := enforceBucketPolicy("s3:ListBucket", bucket, &url); s3Error != ErrNone {
return ErrAccessDenied
}
}
return ErrNoSuchKey
}
// GetObjectHandler - GET Object
// ----------
// This implementation of the GET operation retrieves object. To use GET,
// you must have READ access to the object.
func (api objectAPIHandlers) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:GetObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
// Fetch object stat info.
objInfo, err := api.ObjectAPI.GetObjectInfo(bucket, object)
if err != nil {
errorIf(err, "GetObjectInfo failed.", nil)
apiErr := toAPIErrorCode(err)
if apiErr == ErrNoSuchKey {
apiErr = errAllowableObjectNotFound(bucket, r)
}
writeErrorResponse(w, r, apiErr, r.URL.Path)
return
}
// Verify 'If-Modified-Since' and 'If-Unmodified-Since'.
lastModified := objInfo.ModTime
if checkLastModified(w, r, lastModified) {
return
}
// Verify 'If-Match' and 'If-None-Match'.
if checkETag(w, r) {
return
}
var hrange *httpRange
hrange, err = getRequestedRange(r.Header.Get("Range"), objInfo.Size)
if err != nil {
writeErrorResponse(w, r, ErrInvalidRange, r.URL.Path)
return
}
// Get the object.
startOffset := hrange.start
readCloser, err := api.ObjectAPI.GetObject(bucket, object, startOffset)
if err != nil {
errorIf(err, "GetObject failed.", nil)
apiErr := toAPIErrorCode(err)
if apiErr == ErrNoSuchKey {
apiErr = errAllowableObjectNotFound(bucket, r)
}
writeErrorResponse(w, r, apiErr, r.URL.Path)
return
}
defer readCloser.Close() // Close after this handler returns.
// Set standard object headers.
setObjectHeaders(w, objInfo, hrange)
// Set any additional requested response headers.
setGetRespHeaders(w, r.URL.Query())
if hrange.length > 0 {
if _, err := io.CopyN(w, readCloser, hrange.length); err != nil {
errorIf(err, "Writing to client failed", nil)
// Do not send error response here, since client could have died.
return
}
} else {
if _, err := io.Copy(w, readCloser); err != nil {
errorIf(err, "Writing to client failed", nil)
// Do not send error response here, since client could have died.
return
}
}
}
var unixEpochTime = time.Unix(0, 0)
// checkLastModified implements If-Modified-Since and
// If-Unmodified-Since checks.
//
// modtime is the modification time of the resource to be served, or
// IsZero(). return value is whether this request is now complete.
func checkLastModified(w http.ResponseWriter, r *http.Request, modtime time.Time) bool {
if modtime.IsZero() || modtime.Equal(unixEpochTime) {
// If the object doesn't have a modtime (IsZero), or the modtime
// is obviously garbage (Unix time == 0), then ignore modtimes
// and don't process the If-Modified-Since header.
return false
}
// The Date-Modified header truncates sub-second precision, so
// use mtime < t+1s instead of mtime <= t to check for unmodified.
if _, ok := r.Header["If-Modified-Since"]; ok {
// Return the object only if it has been modified since the
// specified time, otherwise return a 304 (not modified).
t, err := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since"))
if err == nil && modtime.Before(t.Add(1*time.Second)) {
h := w.Header()
// Remove following headers if already set.
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusNotModified)
return true
}
} else if _, ok := r.Header["If-Unmodified-Since"]; ok {
// Return the object only if it has not been modified since
// the specified time, otherwise return a 412 (precondition failed).
t, err := time.Parse(http.TimeFormat, r.Header.Get("If-Unmodified-Since"))
if err == nil && modtime.After(t.Add(1*time.Second)) {
h := w.Header()
// Remove following headers if already set.
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusPreconditionFailed)
return true
}
}
w.Header().Set("Last-Modified", modtime.UTC().Format(http.TimeFormat))
return false
}
// checkETag implements If-None-Match and If-Match checks.
//
// The ETag must have been previously set in the ResponseWriter's
// headers. The return value is whether this request is now considered
// done.
func checkETag(w http.ResponseWriter, r *http.Request) bool {
etag := w.Header().Get("ETag")
// Must know ETag.
if etag == "" {
return false
}
if inm := r.Header.Get("If-None-Match"); inm != "" {
// Return the object only if its entity tag (ETag) is
// different from the one specified; otherwise, return a 304
// (not modified).
if r.Method != "GET" && r.Method != "HEAD" {
return false
}
if inm == etag || inm == "*" {
h := w.Header()
// Remove following headers if already set.
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusNotModified)
return true
}
} else if im := r.Header.Get("If-Match"); im != "" {
// Return the object only if its entity tag (ETag) is the same
// as the one specified; otherwise, return a 412 (precondition failed).
if r.Method != "GET" && r.Method != "HEAD" {
return false
}
if im != etag {
h := w.Header()
// Remove following headers if already set.
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusPreconditionFailed)
return true
}
}
return false
}
// HeadObjectHandler - HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (api objectAPIHandlers) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:GetObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
objInfo, err := api.ObjectAPI.GetObjectInfo(bucket, object)
if err != nil {
errorIf(err, "GetObjectInfo failed.", nil)
apiErr := toAPIErrorCode(err)
if apiErr == ErrNoSuchKey {
apiErr = errAllowableObjectNotFound(bucket, r)
}
writeErrorResponse(w, r, apiErr, r.URL.Path)
return
}
// Verify 'If-Modified-Since' and 'If-Unmodified-Since'.
lastModified := objInfo.ModTime
if checkLastModified(w, r, lastModified) {
return
}
// Verify 'If-Match' and 'If-None-Match'.
if checkETag(w, r) {
return
}
// Set standard object headers.
setObjectHeaders(w, objInfo, nil)
// Successfull response.
w.WriteHeader(http.StatusOK)
}
// CopyObjectHandler - Copy Object
// ----------
// This implementation of the PUT operation adds an object to a bucket
// while reading the object from another source.
func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
// TODO: Reject requests where body/payload is present, for now we
// don't even read it.
// objectSource
objectSource := r.Header.Get("X-Amz-Copy-Source")
// Skip the first element if it is '/', split the rest.
if strings.HasPrefix(objectSource, "/") {
objectSource = objectSource[1:]
}
splits := strings.SplitN(objectSource, "/", 2)
// Save sourceBucket and sourceObject extracted from url Path.
var sourceBucket, sourceObject string
if len(splits) == 2 {
sourceBucket = splits[0]
sourceObject = splits[1]
}
// If source object is empty, reply back error.
if sourceObject == "" {
writeErrorResponse(w, r, ErrInvalidCopySource, r.URL.Path)
return
}
// Source and destination objects cannot be same, reply back error.
if sourceObject == object && sourceBucket == bucket {
writeErrorResponse(w, r, ErrInvalidCopyDest, r.URL.Path)
return
}
objInfo, err := api.ObjectAPI.GetObjectInfo(sourceBucket, sourceObject)
if err != nil {
errorIf(err, "GetObjectInfo failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), objectSource)
return
}
// Verify before writing.
// Verify x-amz-copy-source-if-modified-since and
// x-amz-copy-source-if-unmodified-since.
lastModified := objInfo.ModTime
if checkCopySourceLastModified(w, r, lastModified) {
return
}
// Verify x-amz-copy-source-if-match and
// x-amz-copy-source-if-none-match.
if checkCopySourceETag(w, r) {
return
}
/// maximum Upload size for object in a single CopyObject operation.
if isMaxObjectSize(objInfo.Size) {
writeErrorResponse(w, r, ErrEntityTooLarge, objectSource)
return
}
startOffset := int64(0) // Read the whole file.
// Get the object.
readCloser, err := api.ObjectAPI.GetObject(sourceBucket, sourceObject, startOffset)
if err != nil {
errorIf(err, "Reading "+objectSource+" failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), objectSource)
return
}
// Size of object.
size := objInfo.Size
// Create the object.
md5Sum, err := api.ObjectAPI.PutObject(bucket, object, size, readCloser, nil)
if err != nil {
errorIf(err, "PutObject failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
objInfo, err = api.ObjectAPI.GetObjectInfo(bucket, object)
if err != nil {
errorIf(err, "GetObjectInfo failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
response := generateCopyObjectResponse(md5Sum, objInfo.ModTime)
encodedSuccessResponse := encodeResponse(response)
// write headers
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
// Explicitly close the reader, to avoid fd leaks.
readCloser.Close()
}
// checkCopySource implements x-amz-copy-source-if-modified-since and
// x-amz-copy-source-if-unmodified-since checks.
//
// modtime is the modification time of the resource to be served, or
// IsZero(). return value is whether this request is now complete.
func checkCopySourceLastModified(w http.ResponseWriter, r *http.Request, modtime time.Time) bool {
if modtime.IsZero() || modtime.Equal(unixEpochTime) {
// If the object doesn't have a modtime (IsZero), or the modtime
// is obviously garbage (Unix time == 0), then ignore modtimes
// and don't process the If-Modified-Since header.
return false
}
// The Date-Modified header truncates sub-second precision, so
// use mtime < t+1s instead of mtime <= t to check for unmodified.
if _, ok := r.Header["x-amz-copy-source-if-modified-since"]; ok {
// Return the object only if it has been modified since the
// specified time, otherwise return a 304 error (not modified).
t, err := time.Parse(http.TimeFormat, r.Header.Get("x-amz-copy-source-if-modified-since"))
if err == nil && modtime.Before(t.Add(1*time.Second)) {
h := w.Header()
// Remove Content headers if set
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusNotModified)
return true
}
} else if _, ok := r.Header["x-amz-copy-source-if-unmodified-since"]; ok {
// Return the object only if it has not been modified since the
// specified time, otherwise return a 412 error (precondition failed).
t, err := time.Parse(http.TimeFormat, r.Header.Get("x-amz-copy-source-if-unmodified-since"))
if err == nil && modtime.After(t.Add(1*time.Second)) {
h := w.Header()
// Remove Content headers if set
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusPreconditionFailed)
return true
}
}
w.Header().Set("Last-Modified", modtime.UTC().Format(http.TimeFormat))
return false
}
// checkCopySourceETag implements x-amz-copy-source-if-match and
// x-amz-copy-source-if-none-match checks.
//
// The ETag must have been previously set in the ResponseWriter's
// headers. The return value is whether this request is now considered
// complete.
func checkCopySourceETag(w http.ResponseWriter, r *http.Request) bool {
etag := w.Header().Get("ETag")
// Tag must be provided...
if etag == "" {
return false
}
if inm := r.Header.Get("x-amz-copy-source-if-none-match"); inm != "" {
// Return the object only if its entity tag (ETag) is different
// from the one specified; otherwise, return a 304 (not modified).
if r.Method != "PUT" {
return false
}
if inm == etag || inm == "*" {
h := w.Header()
// Remove Content headers if set
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusNotModified)
return true
}
} else if inm := r.Header.Get("x-amz-copy-source-if-match"); inm != "" {
// Return the object only if its entity tag (ETag) is the same
// as the one specified; otherwise, return a 412 (precondition failed).
if r.Method != "PUT" {
return false
}
if inm != etag {
h := w.Header()
// Remove Content headers if set
delete(h, "Content-Type")
delete(h, "Content-Length")
delete(h, "Content-Range")
w.WriteHeader(http.StatusPreconditionFailed)
return true
}
}
return false
}
// PutObjectHandler - PUT Object
// ----------
// This implementation of the PUT operation adds an object to a bucket.
func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
// If the matching failed, it means that the X-Amz-Copy-Source was
// wrong, fail right here.
if _, ok := r.Header["X-Amz-Copy-Source"]; ok {
writeErrorResponse(w, r, ErrInvalidCopySource, r.URL.Path)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// Get Content-Md5 sent by client and verify if valid
md5Bytes, err := checkValidMD5(r.Header.Get("Content-Md5"))
if err != nil {
errorIf(err, "Decoding md5 failed.", nil)
writeErrorResponse(w, r, ErrInvalidDigest, 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, ErrMissingContentLength, r.URL.Path)
return
}
/// maximum Upload size for objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, r, ErrEntityTooLarge, r.URL.Path)
return
}
var md5Sum string
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
// Create anonymous object.
md5Sum, err = api.ObjectAPI.PutObject(bucket, object, size, r.Body, nil)
case authTypePresigned, authTypeSigned:
// Initialize a pipe for data pipe line.
reader, writer := io.Pipe()
// Start writing in a routine.
go func() {
shaWriter := fastSha256.New()
multiWriter := io.MultiWriter(shaWriter, writer)
if _, cerr := io.CopyN(multiWriter, r.Body, size); cerr != nil {
errorIf(cerr, "Unable to read HTTP body.", nil)
writer.CloseWithError(err)
return
}
shaPayload := shaWriter.Sum(nil)
validateRegion := true // Validate region.
var s3Error APIErrorCode
if isRequestSignatureV4(r) {
s3Error = doesSignatureMatch(hex.EncodeToString(shaPayload), r, validateRegion)
} else if isRequestPresignedSignatureV4(r) {
s3Error = doesPresignedSignatureMatch(hex.EncodeToString(shaPayload), r, validateRegion)
}
if s3Error != ErrNone {
if s3Error == ErrSignatureDoesNotMatch {
writer.CloseWithError(errSignatureMismatch)
return
}
writer.CloseWithError(fmt.Errorf("%v", getAPIError(s3Error)))
return
}
// Close the writer.
writer.Close()
}()
// Save metadata.
metadata := make(map[string]string)
// Make sure we hex encode here.
metadata["md5"] = hex.EncodeToString(md5Bytes)
// Create object.
md5Sum, err = api.ObjectAPI.PutObject(bucket, object, size, reader, metadata)
}
if err != nil {
errorIf(err, "PutObject failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
if md5Sum != "" {
w.Header().Set("ETag", "\""+md5Sum+"\"")
}
writeSuccessResponse(w, nil)
}
/// Multipart objectAPIHandlers
// NewMultipartUploadHandler - New multipart upload
func (api objectAPIHandlers) NewMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
uploadID, err := api.ObjectAPI.NewMultipartUpload(bucket, object)
if err != nil {
errorIf(err, "NewMultipartUpload failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
response := generateInitiateMultipartUploadResponse(bucket, object, uploadID)
encodedSuccessResponse := encodeResponse(response)
// write headers
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
// PutObjectPartHandler - Upload part
func (api objectAPIHandlers) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// get Content-Md5 sent by client and verify if valid
md5Bytes, err := checkValidMD5(r.Header.Get("Content-Md5"))
if err != nil {
errorIf(err, "Decoding md5 failed.", nil)
writeErrorResponse(w, r, ErrInvalidDigest, r.URL.Path)
return
}
/// if Content-Length is unknown/missing, throw away
size := r.ContentLength
if size == -1 {
writeErrorResponse(w, r, ErrMissingContentLength, r.URL.Path)
return
}
/// maximum Upload size for multipart objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, r, ErrEntityTooLarge, r.URL.Path)
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(w, r, ErrInvalidPart, r.URL.Path)
return
}
var partMD5 string
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
// No need to verify signature, anonymous request access is
// already allowed.
partMD5, err = api.ObjectAPI.PutObjectPart(bucket, object, uploadID, partID, size, r.Body, hex.EncodeToString(md5Bytes))
case authTypePresigned, authTypeSigned:
validateRegion := true // Validate region.
// Initialize a pipe for data pipe line.
reader, writer := io.Pipe()
// Start writing in a routine.
go func() {
shaWriter := fastSha256.New()
multiWriter := io.MultiWriter(shaWriter, writer)
if _, err = io.CopyN(multiWriter, r.Body, size); err != nil {
errorIf(err, "Unable to read HTTP body.", nil)
writer.CloseWithError(err)
return
}
shaPayload := shaWriter.Sum(nil)
var s3Error APIErrorCode
if isRequestSignatureV4(r) {
s3Error = doesSignatureMatch(hex.EncodeToString(shaPayload), r, validateRegion)
} else if isRequestPresignedSignatureV4(r) {
s3Error = doesPresignedSignatureMatch(hex.EncodeToString(shaPayload), r, validateRegion)
}
if s3Error != ErrNone {
if s3Error == ErrSignatureDoesNotMatch {
writer.CloseWithError(errSignatureMismatch)
return
}
writer.CloseWithError(fmt.Errorf("%v", getAPIError(s3Error)))
return
}
// Close the writer.
writer.Close()
}()
md5SumHex := hex.EncodeToString(md5Bytes)
partMD5, err = api.ObjectAPI.PutObjectPart(bucket, object, uploadID, partID, size, reader, md5SumHex)
}
if err != nil {
errorIf(err, "PutObjectPart failed.", nil)
// Verify if the underlying error is signature mismatch.
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
if partMD5 != "" {
w.Header().Set("ETag", "\""+partMD5+"\"")
}
writeSuccessResponse(w, nil)
}
// AbortMultipartUploadHandler - Abort multipart upload
func (api objectAPIHandlers) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:AbortMultipartUpload", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
uploadID, _, _, _ := getObjectResources(r.URL.Query())
if err := api.ObjectAPI.AbortMultipartUpload(bucket, object, uploadID); err != nil {
errorIf(err, "AbortMutlipartUpload failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
writeSuccessNoContent(w)
}
// ListObjectPartsHandler - List object parts
func (api objectAPIHandlers) ListObjectPartsHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:ListMultipartUploadParts", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
uploadID, partNumberMarker, maxParts, _ := getObjectResources(r.URL.Query())
if partNumberMarker < 0 {
writeErrorResponse(w, r, ErrInvalidPartNumberMarker, r.URL.Path)
return
}
if maxParts < 0 {
writeErrorResponse(w, r, ErrInvalidMaxParts, r.URL.Path)
return
}
if maxParts == 0 {
maxParts = maxPartsList
}
listPartsInfo, err := api.ObjectAPI.ListObjectParts(bucket, object, uploadID, partNumberMarker, maxParts)
if err != nil {
errorIf(err, "ListObjectParts failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
response := generateListPartsResponse(listPartsInfo)
encodedSuccessResponse := encodeResponse(response)
// Write headers.
setCommonHeaders(w)
// Write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
// CompleteMultipartUploadHandler - Complete multipart upload
func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// Get upload id.
uploadID, _, _, _ := getObjectResources(r.URL.Query())
var md5Sum string
var err error
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
completeMultipartBytes, err := ioutil.ReadAll(r.Body)
if err != nil {
errorIf(err, "CompleteMultipartUpload failed.", nil)
writeErrorResponse(w, r, ErrInternalError, r.URL.Path)
return
}
complMultipartUpload := &completeMultipartUpload{}
if err = xml.Unmarshal(completeMultipartBytes, complMultipartUpload); err != nil {
errorIf(err, "XML Unmarshal failed", nil)
writeErrorResponse(w, r, ErrMalformedXML, r.URL.Path)
return
}
if !sort.IsSorted(completedParts(complMultipartUpload.Parts)) {
writeErrorResponse(w, r, ErrInvalidPartOrder, r.URL.Path)
return
}
// Complete parts.
var completeParts []completePart
for _, part := range complMultipartUpload.Parts {
part.ETag = strings.TrimPrefix(part.ETag, "\"")
part.ETag = strings.TrimSuffix(part.ETag, "\"")
completeParts = append(completeParts, part)
}
// Complete multipart upload.
md5Sum, err = api.ObjectAPI.CompleteMultipartUpload(bucket, object, uploadID, completeParts)
if err != nil {
errorIf(err, "CompleteMultipartUpload failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
// Get object location.
location := getLocation(r)
// Generate complete multipart response.
response := generateCompleteMultpartUploadResponse(bucket, object, location, md5Sum)
encodedSuccessResponse := encodeResponse(response)
// Write headers.
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
/// Delete objectAPIHandlers
// DeleteObjectHandler - delete an object
func (api objectAPIHandlers) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:DeleteObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypeSigned, authTypePresigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
if err := api.ObjectAPI.DeleteObject(bucket, object); err != nil {
errorIf(err, "DeleteObject failed.", nil)
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
writeSuccessNoContent(w)
}