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minio/cmd/object-handlers.go

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/*
* MinIO Cloud Storage, (C) 2015-2018 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 cmd
import (
"context"
"crypto/hmac"
"encoding/binary"
"encoding/hex"
"encoding/xml"
"io"
goioutil "io/ioutil"
"net/http"
"net/url"
"sort"
"strconv"
"strings"
"time"
"github.com/gorilla/mux"
miniogo "github.com/minio/minio-go"
"github.com/minio/minio-go/pkg/encrypt"
"github.com/minio/minio/cmd/crypto"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/dns"
"github.com/minio/minio/pkg/event"
"github.com/minio/minio/pkg/handlers"
"github.com/minio/minio/pkg/hash"
"github.com/minio/minio/pkg/ioutil"
"github.com/minio/minio/pkg/policy"
"github.com/minio/minio/pkg/s3select"
sha256 "github.com/minio/sha256-simd"
"github.com/minio/sio"
)
// supportedHeadGetReqParams - supported request parameters for GET and HEAD presigned request.
var supportedHeadGetReqParams = map[string]string{
"response-expires": "Expires",
"response-content-type": "Content-Type",
"response-cache-control": "Cache-Control",
"response-content-encoding": "Content-Encoding",
"response-content-language": "Content-Language",
"response-content-disposition": "Content-Disposition",
}
const (
compressionAlgorithmV1 = "golang/snappy/LZ77"
)
// setHeadGetRespHeaders - set any requested parameters as response headers.
func setHeadGetRespHeaders(w http.ResponseWriter, reqParams url.Values) {
for k, v := range reqParams {
if header, ok := supportedHeadGetReqParams[k]; ok {
w.Header()[header] = v
}
}
}
// SelectObjectContentHandler - GET Object?select
// ----------
// This implementation of the GET operation retrieves object content based
// on an SQL expression. In the request, along with the sql expression, you must
// also specify a data serialization format (JSON, CSV) of the object.
func (api objectAPIHandlers) SelectObjectContentHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "SelectObject")
defer logger.AuditLog(w, r, "SelectObject", mustGetClaimsFromToken(r))
// Fetch object stat info.
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) { // SSE-KMS is not supported
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
return
}
if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// get gateway encryption options
opts, err := getOpts(ctx, r, bucket, object)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
getObjectInfo := objectAPI.GetObjectInfo
if api.CacheAPI() != nil {
getObjectInfo = api.CacheAPI().GetObjectInfo
}
// Check for auth type to return S3 compatible error.
// type to return the correct error (NoSuchKey vs AccessDenied)
if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, bucket, object); s3Error != ErrNone {
if getRequestAuthType(r) == authTypeAnonymous {
// As per "Permission" section in
// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
// If the object you request does not exist,
// the error Amazon S3 returns depends on
// whether you also have the s3:ListBucket
// permission.
// * If you have the s3:ListBucket permission
// on the bucket, Amazon S3 will return an
// HTTP status code 404 ("no such key")
// error.
// * if you don’t have the s3:ListBucket
// permission, Amazon S3 will return an HTTP
// status code 403 ("access denied") error.`
if globalPolicySys.IsAllowed(policy.Args{
Action: policy.ListBucketAction,
BucketName: bucket,
ConditionValues: getConditionValues(r, "", ""),
IsOwner: false,
}) {
_, err = getObjectInfo(ctx, bucket, object, opts)
if toAPIError(ctx, err).Code == "NoSuchKey" {
s3Error = ErrNoSuchKey
}
}
}
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Get request range.
rangeHeader := r.Header.Get("Range")
if rangeHeader != "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrUnsupportedRangeHeader), r.URL, guessIsBrowserReq(r))
return
}
if r.ContentLength <= 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEmptyRequestBody), r.URL, guessIsBrowserReq(r))
return
}
s3Select, err := s3select.NewS3Select(r.Body)
if err != nil {
if serr, ok := err.(s3select.SelectError); ok {
encodedErrorResponse := encodeResponse(APIErrorResponse{
Code: serr.ErrorCode(),
Message: serr.ErrorMessage(),
BucketName: bucket,
Key: object,
Resource: r.URL.Path,
RequestID: w.Header().Get(responseRequestIDKey),
HostID: w.Header().Get(responseDeploymentIDKey),
})
writeResponse(w, serr.HTTPStatusCode(), encodedErrorResponse, mimeXML)
} else {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
}
return
}
getObjectNInfo := objectAPI.GetObjectNInfo
if api.CacheAPI() != nil {
getObjectNInfo = api.CacheAPI().GetObjectNInfo
}
getObject := func(offset, length int64) (rc io.ReadCloser, err error) {
isSuffixLength := false
if offset < 0 {
isSuffixLength = true
}
rs := &HTTPRangeSpec{
IsSuffixLength: isSuffixLength,
Start: offset,
End: offset + length,
}
return getObjectNInfo(ctx, bucket, object, rs, r.Header, readLock, ObjectOptions{})
}
objInfo, err := getObjectInfo(ctx, bucket, object, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if err = s3Select.Open(getObject); err != nil {
if serr, ok := err.(s3select.SelectError); ok {
encodedErrorResponse := encodeResponse(APIErrorResponse{
Code: serr.ErrorCode(),
Message: serr.ErrorMessage(),
BucketName: bucket,
Key: object,
Resource: r.URL.Path,
RequestID: w.Header().Get(responseRequestIDKey),
HostID: w.Header().Get(responseDeploymentIDKey),
})
writeResponse(w, serr.HTTPStatusCode(), encodedErrorResponse, mimeXML)
} else {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
}
return
}
s3Select.Evaluate(w)
s3Select.Close()
// Notify object accessed via a GET request.
sendEvent(eventArgs{
EventName: event.ObjectAccessedGet,
BucketName: bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
})
}
// 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) {
ctx := newContext(r, w, "GetObject")
defer logger.AuditLog(w, r, "GetObject", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3.IsRequested(r.Header) || crypto.S3KMS.IsRequested(r.Header) { // If SSE-S3 or SSE-KMS present -> AWS fails with undefined error
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL, guessIsBrowserReq(r))
return
}
if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if vid := r.URL.Query().Get("versionId"); vid != "" && vid != "null" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoSuchVersion), r.URL, guessIsBrowserReq(r))
return
}
// get gateway encryption options
opts, err := getOpts(ctx, r, bucket, object)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
// Check for auth type to return S3 compatible error.
// type to return the correct error (NoSuchKey vs AccessDenied)
if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, bucket, object); s3Error != ErrNone {
if getRequestAuthType(r) == authTypeAnonymous {
// As per "Permission" section in
// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
// If the object you request does not exist,
// the error Amazon S3 returns depends on
// whether you also have the s3:ListBucket
// permission.
// * If you have the s3:ListBucket permission
// on the bucket, Amazon S3 will return an
// HTTP status code 404 ("no such key")
// error.
// * if you don’t have the s3:ListBucket
// permission, Amazon S3 will return an HTTP
// status code 403 ("access denied") error.`
if globalPolicySys.IsAllowed(policy.Args{
Action: policy.ListBucketAction,
BucketName: bucket,
ConditionValues: getConditionValues(r, "", ""),
IsOwner: false,
}) {
getObjectInfo := objectAPI.GetObjectInfo
if api.CacheAPI() != nil {
getObjectInfo = api.CacheAPI().GetObjectInfo
}
_, err = getObjectInfo(ctx, bucket, object, opts)
if toAPIError(ctx, err).Code == "NoSuchKey" {
s3Error = ErrNoSuchKey
}
}
}
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
getObjectNInfo := objectAPI.GetObjectNInfo
if api.CacheAPI() != nil {
getObjectNInfo = api.CacheAPI().GetObjectNInfo
}
// Get request range.
var rs *HTTPRangeSpec
rangeHeader := r.Header.Get("Range")
if rangeHeader != "" {
if rs, err = parseRequestRangeSpec(rangeHeader); err != nil {
// Handle only errInvalidRange. Ignore other
// parse error and treat it as regular Get
// request like Amazon S3.
if err == errInvalidRange {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRange), r.URL, guessIsBrowserReq(r))
return
}
logger.LogIf(ctx, err)
}
}
gr, err := getObjectNInfo(ctx, bucket, object, rs, r.Header, readLock, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
defer gr.Close()
objInfo := gr.ObjInfo
if objectAPI.IsEncryptionSupported() {
objInfo.UserDefined = CleanMinioInternalMetadataKeys(objInfo.UserDefined)
if _, err = DecryptObjectInfo(&objInfo, r.Header); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// Validate pre-conditions if any.
if checkPreconditions(ctx, w, r, objInfo) {
return
}
// Set encryption response headers
if objectAPI.IsEncryptionSupported() {
if crypto.IsEncrypted(objInfo.UserDefined) {
switch {
case crypto.S3.IsEncrypted(objInfo.UserDefined):
w.Header().Set(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
case crypto.SSEC.IsEncrypted(objInfo.UserDefined):
w.Header().Set(crypto.SSECAlgorithm, r.Header.Get(crypto.SSECAlgorithm))
w.Header().Set(crypto.SSECKeyMD5, r.Header.Get(crypto.SSECKeyMD5))
}
}
}
if err = setObjectHeaders(w, objInfo, rs); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
setHeadGetRespHeaders(w, r.URL.Query())
statusCodeWritten := false
httpWriter := ioutil.WriteOnClose(w)
if rs != nil {
statusCodeWritten = true
w.WriteHeader(http.StatusPartialContent)
}
// Write object content to response body
if _, err = io.Copy(httpWriter, gr); err != nil {
if !httpWriter.HasWritten() && !statusCodeWritten { // write error response only if no data or headers has been written to client yet
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
}
return
}
if err = httpWriter.Close(); err != nil {
if !httpWriter.HasWritten() && !statusCodeWritten { // write error response only if no data or headers has been written to client yet
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// Notify object accessed via a GET request.
sendEvent(eventArgs{
EventName: event.ObjectAccessedGet,
BucketName: bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
})
}
// 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) {
ctx := newContext(r, w, "HeadObject")
defer logger.AuditLog(w, r, "HeadObject", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrServerNotInitialized))
return
}
if crypto.S3.IsRequested(r.Header) || crypto.S3KMS.IsRequested(r.Header) { // If SSE-S3 or SSE-KMS present -> AWS fails with undefined error
writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrBadRequest))
return
}
if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if vid := r.URL.Query().Get("versionId"); vid != "" && vid != "null" {
writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrNoSuchVersion))
return
}
getObjectInfo := objectAPI.GetObjectInfo
if api.CacheAPI() != nil {
getObjectInfo = api.CacheAPI().GetObjectInfo
}
opts, err := getOpts(ctx, r, bucket, object)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, bucket, object); s3Error != ErrNone {
if getRequestAuthType(r) == authTypeAnonymous {
// As per "Permission" section in
// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectHEAD.html
// If the object you request does not exist,
// the error Amazon S3 returns depends on
// whether you also have the s3:ListBucket
// permission.
// * If you have the s3:ListBucket permission
// on the bucket, Amazon S3 will return an
// HTTP status code 404 ("no such key")
// error.
// * if you don’t have the s3:ListBucket
// permission, Amazon S3 will return an HTTP
// status code 403 ("access denied") error.`
if globalPolicySys.IsAllowed(policy.Args{
Action: policy.ListBucketAction,
BucketName: bucket,
ConditionValues: getConditionValues(r, "", ""),
IsOwner: false,
}) {
_, err = getObjectInfo(ctx, bucket, object, opts)
if toAPIError(ctx, err).Code == "NoSuchKey" {
s3Error = ErrNoSuchKey
}
}
}
writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(s3Error))
return
}
// Get request range.
var rs *HTTPRangeSpec
rangeHeader := r.Header.Get("Range")
if rangeHeader != "" {
if rs, err = parseRequestRangeSpec(rangeHeader); err != nil {
// Handle only errInvalidRange. Ignore other
// parse error and treat it as regular Get
// request like Amazon S3.
if err == errInvalidRange {
writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrInvalidRange))
return
}
logger.LogIf(ctx, err)
}
}
objInfo, err := getObjectInfo(ctx, bucket, object, opts)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
if objectAPI.IsEncryptionSupported() {
if _, err = DecryptObjectInfo(&objInfo, r.Header); err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
objInfo.UserDefined = CleanMinioInternalMetadataKeys(objInfo.UserDefined)
}
// Set encryption response headers
if objectAPI.IsEncryptionSupported() {
if crypto.IsEncrypted(objInfo.UserDefined) {
switch {
case crypto.S3.IsEncrypted(objInfo.UserDefined):
w.Header().Set(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
case crypto.SSEC.IsEncrypted(objInfo.UserDefined):
// Validate the SSE-C Key set in the header.
if _, err = crypto.SSEC.UnsealObjectKey(r.Header, objInfo.UserDefined, bucket, object); err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
w.Header().Set(crypto.SSECAlgorithm, r.Header.Get(crypto.SSECAlgorithm))
w.Header().Set(crypto.SSECKeyMD5, r.Header.Get(crypto.SSECKeyMD5))
}
}
}
// Validate pre-conditions if any.
if checkPreconditions(ctx, w, r, objInfo) {
return
}
// Set standard object headers.
if err = setObjectHeaders(w, objInfo, rs); err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
// Set any additional requested response headers.
setHeadGetRespHeaders(w, r.URL.Query())
// Successful response.
if rs != nil {
w.WriteHeader(http.StatusPartialContent)
} else {
w.WriteHeader(http.StatusOK)
}
// Notify object accessed via a HEAD request.
sendEvent(eventArgs{
EventName: event.ObjectAccessedHead,
BucketName: bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
})
}
// Extract metadata relevant for an CopyObject operation based on conditional
// header values specified in X-Amz-Metadata-Directive.
func getCpObjMetadataFromHeader(ctx context.Context, r *http.Request, userMeta map[string]string) (map[string]string, error) {
// Make a copy of the supplied metadata to avoid
// to change the original one.
defaultMeta := make(map[string]string, len(userMeta))
for k, v := range userMeta {
defaultMeta[k] = v
}
// remove SSE Headers from source info
crypto.RemoveSSEHeaders(defaultMeta)
// if x-amz-metadata-directive says REPLACE then
// we extract metadata from the input headers.
if isMetadataReplace(r.Header) {
return extractMetadata(ctx, r)
}
// if x-amz-metadata-directive says COPY then we
// return the default metadata.
if isMetadataCopy(r.Header) {
return defaultMeta, nil
}
// Copy is default behavior if not x-amz-metadata-directive is set.
return defaultMeta, nil
}
// Returns a minio-go Client configured to access remote host described by destDNSRecord
// Applicable only in a federated deployment
var getRemoteInstanceClient = func(r *http.Request, host string) (*miniogo.Core, error) {
cred := getReqAccessCred(r, globalServerConfig.GetRegion())
// In a federated deployment, all the instances share config files
// and hence expected to have same credentials.
core, err := miniogo.NewCore(host, cred.AccessKey, cred.SecretKey, globalIsSSL)
if err != nil {
return nil, err
}
core.SetCustomTransport(NewCustomHTTPTransport())
return core, nil
}
// Check if the bucket is on a remote site, this code only gets executed when federation is enabled.
var isRemoteCallRequired = func(ctx context.Context, bucket string, objAPI ObjectLayer) bool {
if globalDNSConfig == nil {
return false
}
_, err := objAPI.GetBucketInfo(ctx, bucket)
return err == toObjectErr(errVolumeNotFound, bucket)
}
// CopyObjectHandler - Copy Object
// ----------
// This implementation of the PUT operation adds an object to a bucket
// while reading the object from another source.
// Notice: The S3 client can send secret keys in headers for encryption related jobs,
// the handler should ensure to remove these keys before sending them to the object layer.
// Currently these keys are:
// - X-Amz-Server-Side-Encryption-Customer-Key
// - X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key
func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "CopyObject")
defer logger.AuditLog(w, r, "CopyObject", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r)) // SSE-KMS is not supported
return
}
if !api.EncryptionEnabled() && (hasServerSideEncryptionHeader(r.Header) || crypto.SSECopy.IsRequested(r.Header)) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
dstBucket := vars["bucket"]
dstObject := vars["object"]
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, dstBucket, dstObject); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// TODO: Reject requests where body/payload is present, for now we don't even read it.
// Read escaped copy source path to check for parameters.
cpSrcPath := r.Header.Get("X-Amz-Copy-Source")
// Check https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectVersioning.html
// Regardless of whether you have enabled versioning, each object in your bucket
// has a version ID. If you have not enabled versioning, Amazon S3 sets the value
// of the version ID to null. If you have enabled versioning, Amazon S3 assigns a
// unique version ID value for the object.
if u, err := url.Parse(cpSrcPath); err == nil {
// Check if versionId query param was added, if yes then check if
// its non "null" value, we should error out since we do not support
// any versions other than "null".
if vid := u.Query().Get("versionId"); vid != "" && vid != "null" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoSuchVersion), r.URL, guessIsBrowserReq(r))
return
}
// Note that url.Parse does the unescaping
cpSrcPath = u.Path
}
if vid := r.Header.Get("X-Amz-Copy-Source-Version-Id"); vid != "" {
// Check if versionId header was added, if yes then check if
// its non "null" value, we should error out since we do not support
// any versions other than "null".
if vid != "null" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoSuchVersion), r.URL, guessIsBrowserReq(r))
return
}
}
srcBucket, srcObject := path2BucketAndObject(cpSrcPath)
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopySource), r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, srcBucket, srcObject); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Check if metadata directive is valid.
if !isMetadataDirectiveValid(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMetadataDirective), r.URL, guessIsBrowserReq(r))
return
}
// This request header needs to be set prior to setting ObjectOptions
if globalAutoEncryption && !crypto.SSEC.IsRequested(r.Header) {
r.Header.Add(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
}
var srcOpts, dstOpts ObjectOptions
srcOpts, err := copySrcOpts(ctx, r, srcBucket, srcObject)
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// convert copy src encryption options for GET calls
var getOpts = ObjectOptions{}
getSSE := encrypt.SSE(srcOpts.ServerSideEncryption)
if getSSE != srcOpts.ServerSideEncryption {
getOpts.ServerSideEncryption = getSSE
}
dstOpts, err = copyDstOpts(ctx, r, dstBucket, dstObject, nil)
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err = objectAPI.GetObjectInfo(ctx, dstBucket, dstObject, dstOpts); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
cpSrcDstSame := isStringEqual(pathJoin(srcBucket, srcObject), pathJoin(dstBucket, dstObject))
getObjectNInfo := objectAPI.GetObjectNInfo
if api.CacheAPI() != nil {
getObjectNInfo = api.CacheAPI().GetObjectNInfo
}
var lock = noLock
if !cpSrcDstSame {
lock = readLock
}
checkCopyPrecondFn := func(o ObjectInfo, encETag string) bool {
return checkCopyObjectPreconditions(ctx, w, r, o, encETag)
}
getOpts.CheckCopyPrecondFn = checkCopyPrecondFn
srcOpts.CheckCopyPrecondFn = checkCopyPrecondFn
var rs *HTTPRangeSpec
gr, err := getObjectNInfo(ctx, srcBucket, srcObject, rs, r.Header, lock, getOpts)
if err != nil {
if isErrPreconditionFailed(err) {
return
}
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
defer gr.Close()
srcInfo := gr.ObjInfo
/// maximum Upload size for object in a single CopyObject operation.
if isMaxObjectSize(srcInfo.Size) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL, guessIsBrowserReq(r))
return
}
// We have to copy metadata only if source and destination are same.
// this changes for encryption which can be observed below.
if cpSrcDstSame {
srcInfo.metadataOnly = true
}
var reader io.Reader
var length = srcInfo.Size
// Set the actual size to the decrypted size if encrypted.
actualSize := srcInfo.Size
if crypto.IsEncrypted(srcInfo.UserDefined) {
actualSize, err = srcInfo.DecryptedSize()
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
length = actualSize
}
// Check if the destination bucket is on a remote site, this code only gets executed
// when federation is enabled, ie when globalDNSConfig is non 'nil'.
//
// This function is similar to isRemoteCallRequired but specifically for COPY object API
// if destination and source are same we do not need to check for destnation bucket
// to exist locally.
var isRemoteCopyRequired = func(ctx context.Context, srcBucket, dstBucket string, objAPI ObjectLayer) bool {
if globalDNSConfig == nil {
return false
}
if srcBucket == dstBucket {
return false
}
_, err := objAPI.GetBucketInfo(ctx, dstBucket)
return err == toObjectErr(errVolumeNotFound, dstBucket)
}
var compressMetadata map[string]string
// No need to compress for remote etcd calls
// Pass the decompressed stream to such calls.
isCompressed := objectAPI.IsCompressionSupported() && isCompressible(r.Header, srcObject) && !isRemoteCopyRequired(ctx, srcBucket, dstBucket, objectAPI)
if isCompressed {
compressMetadata = make(map[string]string, 2)
// Preserving the compression metadata.
compressMetadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV1
compressMetadata[ReservedMetadataPrefix+"actual-size"] = strconv.FormatInt(actualSize, 10)
// Remove all source encrypted related metadata to
// avoid copying them in target object.
crypto.RemoveInternalEntries(srcInfo.UserDefined)
reader = newSnappyCompressReader(gr)
length = -1
} else {
// Remove the metadata for remote calls.
delete(srcInfo.UserDefined, ReservedMetadataPrefix+"compression")
delete(srcInfo.UserDefined, ReservedMetadataPrefix+"actual-size")
reader = gr
}
srcInfo.Reader, err = hash.NewReader(reader, length, "", "", actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
rawReader := srcInfo.Reader
pReader := NewPutObjReader(srcInfo.Reader, nil, nil)
var encMetadata = make(map[string]string)
if objectAPI.IsEncryptionSupported() && !isCompressed {
// Encryption parameters not applicable for this object.
if !crypto.IsEncrypted(srcInfo.UserDefined) && crypto.SSECopy.IsRequested(r.Header) {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidEncryptionParameters), r.URL, guessIsBrowserReq(r))
return
}
// Encryption parameters not present for this object.
if crypto.SSEC.IsEncrypted(srcInfo.UserDefined) && !crypto.SSECopy.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidSSECustomerAlgorithm), r.URL, guessIsBrowserReq(r))
return
}
var oldKey, newKey, objEncKey []byte
sseCopyS3 := crypto.S3.IsEncrypted(srcInfo.UserDefined)
sseCopyC := crypto.SSEC.IsEncrypted(srcInfo.UserDefined) && crypto.SSECopy.IsRequested(r.Header)
sseC := crypto.SSEC.IsRequested(r.Header)
sseS3 := crypto.S3.IsRequested(r.Header)
isSourceEncrypted := sseCopyC || sseCopyS3
isTargetEncrypted := sseC || sseS3
if sseC {
newKey, err = ParseSSECustomerRequest(r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// If src == dst and either
// - the object is encrypted using SSE-C and two different SSE-C keys are present
// - the object is encrypted using SSE-S3 and the SSE-S3 header is present
// than execute a key rotation.
var keyRotation bool
if cpSrcDstSame && ((sseCopyC && sseC) || (sseS3 && sseCopyS3)) {
if sseCopyC && sseC {
oldKey, err = ParseSSECopyCustomerRequest(r.Header, srcInfo.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
for k, v := range srcInfo.UserDefined {
if hasPrefix(k, ReservedMetadataPrefix) {
encMetadata[k] = v
}
}
// In case of SSE-S3 oldKey and newKey aren't used - the KMS manages the keys.
if err = rotateKey(oldKey, newKey, srcBucket, srcObject, encMetadata); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Since we are rotating the keys, make sure to update the metadata.
srcInfo.metadataOnly = true
keyRotation = true
} else {
if isSourceEncrypted || isTargetEncrypted {
// We are not only copying just metadata instead
// we are creating a new object at this point, even
// if source and destination are same objects.
if !keyRotation {
srcInfo.metadataOnly = false
}
}
// Calculate the size of the target object
var targetSize int64
switch {
case !isSourceEncrypted && !isTargetEncrypted:
targetSize = srcInfo.Size
case isSourceEncrypted && isTargetEncrypted:
objInfo := ObjectInfo{Size: actualSize}
targetSize = objInfo.EncryptedSize()
case !isSourceEncrypted && isTargetEncrypted:
targetSize = srcInfo.EncryptedSize()
case isSourceEncrypted && !isTargetEncrypted:
targetSize, _ = srcInfo.DecryptedSize()
}
if isTargetEncrypted {
reader, objEncKey, err = newEncryptReader(srcInfo.Reader, newKey, dstBucket, dstObject, encMetadata, sseS3)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
if isSourceEncrypted {
// Remove all source encrypted related metadata to
// avoid copying them in target object.
crypto.RemoveInternalEntries(srcInfo.UserDefined)
}
srcInfo.Reader, err = hash.NewReader(reader, targetSize, "", "", targetSize) // do not try to verify encrypted content
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
pReader = NewPutObjReader(rawReader, srcInfo.Reader, objEncKey)
}
}
srcInfo.PutObjReader = pReader
srcInfo.UserDefined, err = getCpObjMetadataFromHeader(ctx, r, srcInfo.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Store the preserved compression metadata.
for k, v := range compressMetadata {
srcInfo.UserDefined[k] = v
}
// We need to preserve the encryption headers set in EncryptRequest,
// so we do not want to override them, copy them instead.
for k, v := range encMetadata {
srcInfo.UserDefined[k] = v
}
// Ensure that metadata does not contain sensitive information
crypto.RemoveSensitiveEntries(srcInfo.UserDefined)
// Check if x-amz-metadata-directive was not set to REPLACE and source,
// desination are same objects. Apply this restriction also when
// metadataOnly is true indicating that we are not overwriting the object.
// if encryption is enabled we do not need explicit "REPLACE" metadata to
// be enabled as well - this is to allow for key-rotation.
if !isMetadataReplace(r.Header) && srcInfo.metadataOnly && !crypto.IsEncrypted(srcInfo.UserDefined) {
// If x-amz-metadata-directive is not set to REPLACE then we need
// to error out if source and destination are same.
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyDest), r.URL, guessIsBrowserReq(r))
return
}
var objInfo ObjectInfo
if isRemoteCopyRequired(ctx, srcBucket, dstBucket, objectAPI) {
var dstRecords []dns.SrvRecord
dstRecords, err = globalDNSConfig.Get(dstBucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Send PutObject request to appropriate instance (in federated deployment)
client, rerr := getRemoteInstanceClient(r, getHostFromSrv(dstRecords))
if rerr != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, rerr), r.URL, guessIsBrowserReq(r))
return
}
remoteObjInfo, rerr := client.PutObject(dstBucket, dstObject, srcInfo.Reader,
srcInfo.Size, "", "", srcInfo.UserDefined, dstOpts.ServerSideEncryption)
if rerr != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, rerr), r.URL, guessIsBrowserReq(r))
return
}
objInfo.ETag = remoteObjInfo.ETag
objInfo.ModTime = remoteObjInfo.LastModified
} else {
// Copy source object to destination, if source and destination
// object is same then only metadata is updated.
objInfo, err = objectAPI.CopyObject(ctx, srcBucket, srcObject, dstBucket, dstObject, srcInfo, srcOpts, dstOpts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
response := generateCopyObjectResponse(getDecryptedETag(r.Header, objInfo, false), objInfo.ModTime)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
if objInfo.IsCompressed() {
objInfo.Size = actualSize
}
// Notify object created event.
sendEvent(eventArgs{
EventName: event.ObjectCreatedCopy,
BucketName: dstBucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
})
}
// PutObjectHandler - PUT Object
// ----------
// This implementation of the PUT operation adds an object to a bucket.
// Notice: The S3 client can send secret keys in headers for encryption related jobs,
// the handler should ensure to remove these keys before sending them to the object layer.
// Currently these keys are:
// - X-Amz-Server-Side-Encryption-Customer-Key
// - X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key
func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutObject")
defer logger.AuditLog(w, r, "PutObject", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r)) // SSE-KMS is not supported
return
}
if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// X-Amz-Copy-Source shouldn't be set for this call.
if _, ok := r.Header["X-Amz-Copy-Source"]; ok {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopySource), r.URL, guessIsBrowserReq(r))
return
}
// Validate storage class metadata if present
if _, ok := r.Header[amzStorageClassCanonical]; ok {
if !isValidStorageClassMeta(r.Header.Get(amzStorageClassCanonical)) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidStorageClass), r.URL, guessIsBrowserReq(r))
return
}
}
// Get Content-Md5 sent by client and verify if valid
md5Bytes, err := checkValidMD5(r.Header)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidDigest), r.URL, guessIsBrowserReq(r))
return
}
/// if Content-Length is unknown/missing, deny the request
size := r.ContentLength
rAuthType := getRequestAuthType(r)
if rAuthType == authTypeStreamingSigned {
if sizeStr, ok := r.Header["X-Amz-Decoded-Content-Length"]; ok {
if sizeStr[0] == "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
return
}
size, err = strconv.ParseInt(sizeStr[0], 10, 64)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
}
if size == -1 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
return
}
/// maximum Upload size for objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL, guessIsBrowserReq(r))
return
}
metadata, err := extractMetadata(ctx, r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if rAuthType == authTypeStreamingSigned {
if contentEncoding, ok := metadata["content-encoding"]; ok {
contentEncoding = trimAwsChunkedContentEncoding(contentEncoding)
if contentEncoding != "" {
// Make sure to trim and save the content-encoding
// parameter for a streaming signature which is set
// to a custom value for example: "aws-chunked,gzip".
metadata["content-encoding"] = contentEncoding
} else {
// Trimmed content encoding is empty when the header
// value is set to "aws-chunked" only.
// Make sure to delete the content-encoding parameter
// for a streaming signature which is set to value
// for example: "aws-chunked"
delete(metadata, "content-encoding")
}
}
}
var (
md5hex = hex.EncodeToString(md5Bytes)
sha256hex = ""
reader io.Reader
s3Err APIErrorCode
putObject = objectAPI.PutObject
)
reader = r.Body
// Check if put is allowed
if s3Err = isPutAllowed(rAuthType, bucket, object, r); s3Err != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL, guessIsBrowserReq(r))
return
}
switch rAuthType {
case authTypeStreamingSigned:
// Initialize stream signature verifier.
reader, s3Err = newSignV4ChunkedReader(r)
if s3Err != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL, guessIsBrowserReq(r))
return
}
case authTypeSignedV2, authTypePresignedV2:
s3Err = isReqAuthenticatedV2(r)
if s3Err != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL, guessIsBrowserReq(r))
return
}
case authTypePresigned, authTypeSigned:
if s3Err = reqSignatureV4Verify(r, globalServerConfig.GetRegion(), serviceS3); s3Err != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL, guessIsBrowserReq(r))
return
}
if !skipContentSha256Cksum(r) {
sha256hex = getContentSha256Cksum(r, serviceS3)
}
}
actualSize := size
if objectAPI.IsCompressionSupported() && isCompressible(r.Header, object) && size > 0 {
// Storing the compression metadata.
metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV1
metadata[ReservedMetadataPrefix+"actual-size"] = strconv.FormatInt(size, 10)
actualReader, err := hash.NewReader(reader, size, md5hex, sha256hex, actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Set compression metrics.
reader = newSnappyCompressReader(actualReader)
size = -1 // Since compressed size is un-predictable.
md5hex = "" // Do not try to verify the content.
sha256hex = ""
}
hashReader, err := hash.NewReader(reader, size, md5hex, sha256hex, actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
rawReader := hashReader
pReader := NewPutObjReader(rawReader, nil, nil)
// This request header needs to be set prior to setting ObjectOptions
if globalAutoEncryption && !crypto.SSEC.IsRequested(r.Header) {
r.Header.Add(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
}
// get gateway encryption options
var opts ObjectOptions
opts, err = putOpts(ctx, r, bucket, object, metadata)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err = objectAPI.GetObjectInfo(ctx, bucket, object, opts); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
var objectEncryptionKey []byte
if objectAPI.IsEncryptionSupported() {
if hasServerSideEncryptionHeader(r.Header) && !hasSuffix(object, slashSeparator) { // handle SSE requests
reader, objectEncryptionKey, err = EncryptRequest(hashReader, r, bucket, object, metadata)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
info := ObjectInfo{Size: size}
hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", size) // do not try to verify encrypted content
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
pReader = NewPutObjReader(rawReader, hashReader, objectEncryptionKey)
}
}
// Ensure that metadata does not contain sensitive information
crypto.RemoveSensitiveEntries(metadata)
if api.CacheAPI() != nil && !hasServerSideEncryptionHeader(r.Header) {
putObject = api.CacheAPI().PutObject
}
// Create the object..
objInfo, err := putObject(ctx, bucket, object, pReader, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
etag := objInfo.ETag
if objInfo.IsCompressed() {
// Ignore compressed ETag.
etag = objInfo.ETag + "-1"
} else if hasServerSideEncryptionHeader(r.Header) {
etag = getDecryptedETag(r.Header, objInfo, false)
}
w.Header()["ETag"] = []string{"\"" + etag + "\""}
if objectAPI.IsEncryptionSupported() {
if crypto.IsEncrypted(objInfo.UserDefined) {
objInfo.Size, _ = objInfo.DecryptedSize()
switch {
case crypto.S3.IsEncrypted(objInfo.UserDefined):
w.Header().Set(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
case crypto.SSEC.IsRequested(r.Header):
w.Header().Set(crypto.SSECAlgorithm, r.Header.Get(crypto.SSECAlgorithm))
w.Header().Set(crypto.SSECKeyMD5, r.Header.Get(crypto.SSECKeyMD5))
}
}
}
writeSuccessResponseHeadersOnly(w)
// Notify object created event.
sendEvent(eventArgs{
EventName: event.ObjectCreatedPut,
BucketName: bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
})
}
/// Multipart objectAPIHandlers
// NewMultipartUploadHandler - New multipart upload.
// Notice: The S3 client can send secret keys in headers for encryption related jobs,
// the handler should ensure to remove these keys before sending them to the object layer.
// Currently these keys are:
// - X-Amz-Server-Side-Encryption-Customer-Key
// - X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key
func (api objectAPIHandlers) NewMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "NewMultipartUpload")
defer logger.AuditLog(w, r, "NewMultipartUpload", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r)) // SSE-KMS is not supported
return
}
if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// This request header needs to be set prior to setting ObjectOptions
if globalAutoEncryption && !crypto.SSEC.IsRequested(r.Header) {
r.Header.Add(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
}
// get gateway encryption options
var opts ObjectOptions
var err error
opts, err = putOpts(ctx, r, bucket, object, nil)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err = objectAPI.GetObjectInfo(ctx, bucket, object, opts); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
// Validate storage class metadata if present
if _, ok := r.Header[amzStorageClassCanonical]; ok {
if !isValidStorageClassMeta(r.Header.Get(amzStorageClassCanonical)) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidStorageClass), r.URL, guessIsBrowserReq(r))
return
}
}
var encMetadata = map[string]string{}
if objectAPI.IsEncryptionSupported() {
if hasServerSideEncryptionHeader(r.Header) {
if err = setEncryptionMetadata(r, bucket, object, encMetadata); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Set this for multipart only operations, we need to differentiate during
// decryption if the file was actually multipart or not.
encMetadata[ReservedMetadataPrefix+"Encrypted-Multipart"] = ""
}
}
// Extract metadata that needs to be saved.
metadata, err := extractMetadata(ctx, r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// We need to preserve the encryption headers set in EncryptRequest,
// so we do not want to override them, copy them instead.
for k, v := range encMetadata {
metadata[k] = v
}
// Ensure that metadata does not contain sensitive information
crypto.RemoveSensitiveEntries(metadata)
if objectAPI.IsCompressionSupported() && isCompressible(r.Header, object) {
// Storing the compression metadata.
metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV1
}
opts, err = putOpts(ctx, r, bucket, object, metadata)
if err != nil {
writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
return
}
newMultipartUpload := objectAPI.NewMultipartUpload
if api.CacheAPI() != nil && !hasServerSideEncryptionHeader(r.Header) {
newMultipartUpload = api.CacheAPI().NewMultipartUpload
}
uploadID, err := newMultipartUpload(ctx, bucket, object, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
response := generateInitiateMultipartUploadResponse(bucket, object, uploadID)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// CopyObjectPartHandler - uploads a part by copying data from an existing object as data source.
func (api objectAPIHandlers) CopyObjectPartHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "CopyObjectPart")
defer logger.AuditLog(w, r, "CopyObjectPart", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r)) // SSE-KMS is not supported
return
}
if !api.EncryptionEnabled() && (hasServerSideEncryptionHeader(r.Header) || crypto.SSECopy.IsRequested(r.Header)) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
dstBucket := vars["bucket"]
dstObject := vars["object"]
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, dstBucket, dstObject); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Read escaped copy source path to check for parameters.
cpSrcPath := r.Header.Get("X-Amz-Copy-Source")
// Check https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectVersioning.html
// Regardless of whether you have enabled versioning, each object in your bucket
// has a version ID. If you have not enabled versioning, Amazon S3 sets the value
// of the version ID to null. If you have enabled versioning, Amazon S3 assigns a
// unique version ID value for the object.
if u, err := url.Parse(cpSrcPath); err == nil {
// Check if versionId query param was added, if yes then check if
// its non "null" value, we should error out since we do not support
// any versions other than "null".
if vid := u.Query().Get("versionId"); vid != "" && vid != "null" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoSuchVersion), r.URL, guessIsBrowserReq(r))
return
}
// Note that url.Parse does the unescaping
cpSrcPath = u.Path
}
if vid := r.Header.Get("X-Amz-Copy-Source-Version-Id"); vid != "" {
// Check if X-Amz-Copy-Source-Version-Id header was added, if yes then check if
// its non "null" value, we should error out since we do not support
// any versions other than "null".
if vid != "null" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoSuchVersion), r.URL, guessIsBrowserReq(r))
return
}
}
srcBucket, srcObject := path2BucketAndObject(cpSrcPath)
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopySource), r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, srcBucket, srcObject); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPart), r.URL, guessIsBrowserReq(r))
return
}
// check partID with maximum part ID for multipart objects
if isMaxPartID(partID) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxParts), r.URL, guessIsBrowserReq(r))
return
}
var srcOpts, dstOpts ObjectOptions
srcOpts, err = copySrcOpts(ctx, r, srcBucket, srcObject)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// convert copy src and dst encryption options for GET/PUT calls
var getOpts = ObjectOptions{}
if srcOpts.ServerSideEncryption != nil {
getOpts.ServerSideEncryption = encrypt.SSE(srcOpts.ServerSideEncryption)
}
dstOpts, err = copyDstOpts(ctx, r, dstBucket, dstObject, nil)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err = objectAPI.GetObjectInfo(ctx, dstBucket, dstObject, dstOpts); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
getObjectNInfo := objectAPI.GetObjectNInfo
if api.CacheAPI() != nil {
getObjectNInfo = api.CacheAPI().GetObjectNInfo
}
// Get request range.
var rs *HTTPRangeSpec
rangeHeader := r.Header.Get("x-amz-copy-source-range")
if rangeHeader != "" {
var parseRangeErr error
if rs, parseRangeErr = parseCopyPartRangeSpec(rangeHeader); parseRangeErr != nil {
// Handle only errInvalidRange
// Ignore other parse error and treat it as regular Get request like Amazon S3.
logger.GetReqInfo(ctx).AppendTags("rangeHeader", rangeHeader)
logger.LogIf(ctx, parseRangeErr)
writeCopyPartErr(ctx, w, parseRangeErr, r.URL, guessIsBrowserReq(r))
return
}
}
checkCopyPartPrecondFn := func(o ObjectInfo, encETag string) bool {
return checkCopyObjectPartPreconditions(ctx, w, r, o, encETag)
}
getOpts.CheckCopyPrecondFn = checkCopyPartPrecondFn
srcOpts.CheckCopyPrecondFn = checkCopyPartPrecondFn
gr, err := getObjectNInfo(ctx, srcBucket, srcObject, rs, r.Header, readLock, getOpts)
if err != nil {
if isErrPreconditionFailed(err) {
return
}
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
defer gr.Close()
srcInfo := gr.ObjInfo
actualPartSize := srcInfo.Size
if crypto.IsEncrypted(srcInfo.UserDefined) {
actualPartSize, err = srcInfo.DecryptedSize()
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// Special care for CopyObjectPart
if partRangeErr := checkCopyPartRangeWithSize(rs, actualPartSize); partRangeErr != nil {
writeCopyPartErr(ctx, w, partRangeErr, r.URL, guessIsBrowserReq(r))
return
}
// Get the object offset & length
startOffset, length, err := rs.GetOffsetLength(actualPartSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
/// maximum copy size for multipart objects in a single operation
if isMaxAllowedPartSize(length) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL, guessIsBrowserReq(r))
return
}
actualPartSize = length
var reader io.Reader
var li ListPartsInfo
li, err = objectAPI.ListObjectParts(ctx, dstBucket, dstObject, uploadID, 0, 1, dstOpts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Read compression metadata preserved in the init multipart for the decision.
_, compressPart := li.UserDefined[ReservedMetadataPrefix+"compression"]
isCompressed := compressPart
// Compress only if the compression is enabled during initial multipart.
if isCompressed {
reader = newSnappyCompressReader(gr)
length = -1
} else {
reader = gr
}
srcInfo.Reader, err = hash.NewReader(reader, length, "", "", actualPartSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
rawReader := srcInfo.Reader
pReader := NewPutObjReader(rawReader, nil, nil)
isEncrypted := false
var objectEncryptionKey []byte
if objectAPI.IsEncryptionSupported() && !isCompressed {
li, lerr := objectAPI.ListObjectParts(ctx, dstBucket, dstObject, uploadID, 0, 1, dstOpts)
if lerr != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, lerr), r.URL, guessIsBrowserReq(r))
return
}
li.UserDefined = CleanMinioInternalMetadataKeys(li.UserDefined)
dstOpts, err = copyDstOpts(ctx, r, dstBucket, dstObject, li.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if crypto.IsEncrypted(li.UserDefined) {
if !crypto.SSEC.IsRequested(r.Header) && crypto.SSEC.IsEncrypted(li.UserDefined) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrSSEMultipartEncrypted), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3.IsEncrypted(li.UserDefined) && crypto.SSEC.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrSSEMultipartEncrypted), r.URL, guessIsBrowserReq(r))
return
}
isEncrypted = true
var key []byte
if crypto.SSEC.IsRequested(r.Header) {
key, err = ParseSSECustomerRequest(r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
objectEncryptionKey, err = decryptObjectInfo(key, dstBucket, dstObject, li.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
var partIDbin [4]byte
binary.LittleEndian.PutUint32(partIDbin[:], uint32(partID)) // marshal part ID
mac := hmac.New(sha256.New, objectEncryptionKey) // derive part encryption key from part ID and object key
mac.Write(partIDbin[:])
partEncryptionKey := mac.Sum(nil)
reader, err = sio.EncryptReader(reader, sio.Config{Key: partEncryptionKey})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
info := ObjectInfo{Size: length}
srcInfo.Reader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", length)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
pReader = NewPutObjReader(rawReader, srcInfo.Reader, objectEncryptionKey)
}
}
srcInfo.PutObjReader = pReader
// Copy source object to destination, if source and destination
// object is same then only metadata is updated.
partInfo, err := objectAPI.CopyObjectPart(ctx, srcBucket, srcObject, dstBucket, dstObject, uploadID, partID,
startOffset, length, srcInfo, srcOpts, dstOpts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if isEncrypted {
partInfo.ETag = tryDecryptETag(objectEncryptionKey, partInfo.ETag, crypto.SSEC.IsRequested(r.Header))
}
response := generateCopyObjectPartResponse(partInfo.ETag, partInfo.LastModified)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// PutObjectPartHandler - uploads an incoming part for an ongoing multipart operation.
func (api objectAPIHandlers) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutObjectPart")
defer logger.AuditLog(w, r, "PutObjectPart", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r)) // SSE-KMS is not supported
return
}
if !api.EncryptionEnabled() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// X-Amz-Copy-Source shouldn't be set for this call.
if _, ok := r.Header["X-Amz-Copy-Source"]; ok {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopySource), r.URL, guessIsBrowserReq(r))
return
}
// get Content-Md5 sent by client and verify if valid
md5Bytes, err := checkValidMD5(r.Header)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidDigest), r.URL, guessIsBrowserReq(r))
return
}
/// if Content-Length is unknown/missing, throw away
size := r.ContentLength
rAuthType := getRequestAuthType(r)
// For auth type streaming signature, we need to gather a different content length.
if rAuthType == authTypeStreamingSigned {
if sizeStr, ok := r.Header["X-Amz-Decoded-Content-Length"]; ok {
if sizeStr[0] == "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
return
}
size, err = strconv.ParseInt(sizeStr[0], 10, 64)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
}
if size == -1 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
return
}
/// maximum Upload size for multipart objects in a single operation
if isMaxAllowedPartSize(size) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL, guessIsBrowserReq(r))
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPart), r.URL, guessIsBrowserReq(r))
return
}
// check partID with maximum part ID for multipart objects
if isMaxPartID(partID) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxParts), r.URL, guessIsBrowserReq(r))
return
}
var (
md5hex = hex.EncodeToString(md5Bytes)
sha256hex = ""
reader io.Reader
s3Error APIErrorCode
)
reader = r.Body
if s3Error = isPutAllowed(rAuthType, bucket, object, r); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
switch rAuthType {
case authTypeStreamingSigned:
// Initialize stream signature verifier.
reader, s3Error = newSignV4ChunkedReader(r)
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
case authTypeSignedV2, authTypePresignedV2:
if s3Error = isReqAuthenticatedV2(r); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
case authTypePresigned, authTypeSigned:
if s3Error = reqSignatureV4Verify(r, globalServerConfig.GetRegion(), serviceS3); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
if !skipContentSha256Cksum(r) {
sha256hex = getContentSha256Cksum(r, serviceS3)
}
}
actualSize := size
// get encryption options
var opts ObjectOptions
if crypto.SSEC.IsRequested(r.Header) {
opts, err = putOpts(ctx, r, bucket, object, nil)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
var li ListPartsInfo
li, err = objectAPI.ListObjectParts(ctx, bucket, object, uploadID, 0, 1, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Read compression metadata preserved in the init multipart for the decision.
_, compressPart := li.UserDefined[ReservedMetadataPrefix+"compression"]
isCompressed := false
if objectAPI.IsCompressionSupported() && compressPart {
actualReader, err := hash.NewReader(reader, size, md5hex, sha256hex, actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Set compression metrics.
reader = newSnappyCompressReader(actualReader)
size = -1 // Since compressed size is un-predictable.
md5hex = "" // Do not try to verify the content.
sha256hex = ""
isCompressed = true
}
hashReader, err := hash.NewReader(reader, size, md5hex, sha256hex, actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
rawReader := hashReader
pReader := NewPutObjReader(rawReader, nil, nil)
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err = objectAPI.GetObjectInfo(ctx, bucket, object, opts); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
isEncrypted := false
var objectEncryptionKey []byte
if objectAPI.IsEncryptionSupported() && !isCompressed {
var li ListPartsInfo
li, err = objectAPI.ListObjectParts(ctx, bucket, object, uploadID, 0, 1, ObjectOptions{})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
li.UserDefined = CleanMinioInternalMetadataKeys(li.UserDefined)
if crypto.IsEncrypted(li.UserDefined) {
if !crypto.SSEC.IsRequested(r.Header) && crypto.SSEC.IsEncrypted(li.UserDefined) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrSSEMultipartEncrypted), r.URL, guessIsBrowserReq(r))
return
}
isEncrypted = true // to detect SSE-S3 encryption
opts, err = putOpts(ctx, r, bucket, object, li.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
var key []byte
if crypto.SSEC.IsRequested(r.Header) {
key, err = ParseSSECustomerRequest(r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// Calculating object encryption key
objectEncryptionKey, err = decryptObjectInfo(key, bucket, object, li.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
var partIDbin [4]byte
binary.LittleEndian.PutUint32(partIDbin[:], uint32(partID)) // marshal part ID
mac := hmac.New(sha256.New, objectEncryptionKey) // derive part encryption key from part ID and object key
mac.Write(partIDbin[:])
partEncryptionKey := mac.Sum(nil)
reader, err = sio.EncryptReader(hashReader, sio.Config{Key: partEncryptionKey})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
info := ObjectInfo{Size: size}
hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", size) // do not try to verify encrypted content
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
pReader = NewPutObjReader(rawReader, hashReader, objectEncryptionKey)
}
}
putObjectPart := objectAPI.PutObjectPart
if api.CacheAPI() != nil && !isEncrypted {
putObjectPart = api.CacheAPI().PutObjectPart
}
partInfo, err := putObjectPart(ctx, bucket, object, uploadID, partID, pReader, opts)
if err != nil {
// Verify if the underlying error is signature mismatch.
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
etag := partInfo.ETag
if isCompressed {
// Suppress compressed ETag.
etag = partInfo.ETag + "-1"
} else if isEncrypted {
etag = tryDecryptETag(objectEncryptionKey, partInfo.ETag, crypto.SSEC.IsRequested(r.Header))
}
w.Header()["ETag"] = []string{"\"" + etag + "\""}
writeSuccessResponseHeadersOnly(w)
}
// AbortMultipartUploadHandler - Abort multipart upload
func (api objectAPIHandlers) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "AbortMultipartUpload")
defer logger.AuditLog(w, r, "AbortMultipartUpload", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
abortMultipartUpload := objectAPI.AbortMultipartUpload
if api.CacheAPI() != nil {
abortMultipartUpload = api.CacheAPI().AbortMultipartUpload
}
if s3Error := checkRequestAuthType(ctx, r, policy.AbortMultipartUploadAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err := objectAPI.GetObjectInfo(ctx, bucket, object, ObjectOptions{}); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
uploadID, _, _, _, s3Error := getObjectResources(r.URL.Query())
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
if err := abortMultipartUpload(ctx, bucket, object, uploadID); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
writeSuccessNoContent(w)
}
// ListObjectPartsHandler - List object parts
func (api objectAPIHandlers) ListObjectPartsHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListObjectParts")
defer logger.AuditLog(w, r, "ListObjectParts", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.ListMultipartUploadPartsAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
uploadID, partNumberMarker, maxParts, encodingType, s3Error := getObjectResources(r.URL.Query())
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
if partNumberMarker < 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPartNumberMarker), r.URL, guessIsBrowserReq(r))
return
}
if maxParts < 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxParts), r.URL, guessIsBrowserReq(r))
return
}
var opts ObjectOptions
listPartsInfo, err := objectAPI.ListObjectParts(ctx, bucket, object, uploadID, partNumberMarker, maxParts, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
var ssec bool
if objectAPI.IsEncryptionSupported() {
var li ListPartsInfo
li, err = objectAPI.ListObjectParts(ctx, bucket, object, uploadID, 0, 1, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if crypto.IsEncrypted(li.UserDefined) {
var key []byte
if crypto.SSEC.IsEncrypted(li.UserDefined) {
ssec = true
}
var objectEncryptionKey []byte
if crypto.S3.IsEncrypted(li.UserDefined) {
// Calculating object encryption key
objectEncryptionKey, err = decryptObjectInfo(key, bucket, object, li.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
parts := make([]PartInfo, len(listPartsInfo.Parts))
for i, p := range listPartsInfo.Parts {
part := p
part.ETag = tryDecryptETag(objectEncryptionKey, p.ETag, ssec)
parts[i] = part
}
listPartsInfo.Parts = parts
}
}
response := generateListPartsResponse(listPartsInfo, encodingType)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
type whiteSpaceWriter struct {
http.ResponseWriter
http.Flusher
written bool
}
func (w *whiteSpaceWriter) Write(b []byte) (n int, err error) {
n, err = w.ResponseWriter.Write(b)
w.written = true
return
}
func (w *whiteSpaceWriter) WriteHeader(statusCode int) {
if !w.written {
w.ResponseWriter.WriteHeader(statusCode)
}
}
// Send empty whitespaces every 10 seconds to the client till completeMultiPartUpload() is
// done so that the client does not time out. Downside is we might send 200 OK and
// then send error XML. But accoording to S3 spec the client is supposed to check
// for error XML even if it received 200 OK. But for erasure this is not a problem
// as completeMultiPartUpload() is quick. Even For FS, it would not be an issue as
// we do background append as and when the parts arrive and completeMultiPartUpload
// is quick. Only in a rare case where parts would be out of order will
// FS:completeMultiPartUpload() take a longer time.
func sendWhiteSpace(ctx context.Context, w http.ResponseWriter) <-chan bool {
doneCh := make(chan bool)
go func() {
ticker := time.NewTicker(time.Second * 10)
headerWritten := false
for {
select {
case <-ticker.C:
// Write header if not written yet.
if !headerWritten {
w.Write([]byte(xml.Header))
headerWritten = true
}
// Once header is written keep writing empty spaces
// which are ignored by client SDK XML parsers.
// This occurs when server takes long time to completeMultiPartUpload()
w.Write([]byte(" "))
w.(http.Flusher).Flush()
case doneCh <- headerWritten:
ticker.Stop()
return
}
}
}()
return doneCh
}
// CompleteMultipartUploadHandler - Complete multipart upload.
func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "CompleteMultipartUpload")
defer logger.AuditLog(w, r, "CompleteMultipartUpload", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
if _, err := objectAPI.GetObjectInfo(ctx, bucket, object, ObjectOptions{}); err == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
}
// Get upload id.
uploadID, _, _, _, s3Error := getObjectResources(r.URL.Query())
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
completeMultipartBytes, err := goioutil.ReadAll(r.Body)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
complMultipartUpload := &CompleteMultipartUpload{}
if err = xml.Unmarshal(completeMultipartBytes, complMultipartUpload); err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML), r.URL, guessIsBrowserReq(r))
return
}
if len(complMultipartUpload.Parts) == 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML), r.URL, guessIsBrowserReq(r))
return
}
if !sort.IsSorted(CompletedParts(complMultipartUpload.Parts)) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPartOrder), r.URL, guessIsBrowserReq(r))
return
}
var objectEncryptionKey []byte
var opts ObjectOptions
var isEncrypted, ssec bool
if objectAPI.IsEncryptionSupported() {
var li ListPartsInfo
li, err = objectAPI.ListObjectParts(ctx, bucket, object, uploadID, 0, 1, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if crypto.IsEncrypted(li.UserDefined) {
var key []byte
isEncrypted = true
ssec = crypto.SSEC.IsEncrypted(li.UserDefined)
if crypto.S3.IsEncrypted(li.UserDefined) {
// Calculating object encryption key
objectEncryptionKey, err = decryptObjectInfo(key, bucket, object, li.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
}
}
partsMap := make(map[string]PartInfo)
if isEncrypted {
var partNumberMarker int
maxParts := 1000
for {
listPartsInfo, err := objectAPI.ListObjectParts(ctx, bucket, object, uploadID, partNumberMarker, maxParts, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
for _, part := range listPartsInfo.Parts {
partsMap[strconv.Itoa(part.PartNumber)] = part
}
partNumberMarker = listPartsInfo.NextPartNumberMarker
if !listPartsInfo.IsTruncated {
break
}
}
}
// Complete parts.
var completeParts []CompletePart
for _, part := range complMultipartUpload.Parts {
// Avoiding for gateway parts.
// `strings.TrimPrefix` does not work here as intended. So `Replace` is used instead.
if objectAPI.IsCompressionSupported() {
part.ETag = strings.Replace(part.ETag, "-1", "", -1) // For compressed multiparts, We append '-1' for part.ETag.
}
part.ETag = canonicalizeETag(part.ETag)
if isEncrypted {
// ETag is stored in the backend in encrypted form. Validate client sent ETag with
// decrypted ETag.
if bkPartInfo, ok := partsMap[strconv.Itoa(part.PartNumber)]; ok {
bkETag := tryDecryptETag(objectEncryptionKey, bkPartInfo.ETag, ssec)
if bkETag != part.ETag {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPart), r.URL, guessIsBrowserReq(r))
return
}
part.ETag = bkPartInfo.ETag
}
}
completeParts = append(completeParts, part)
}
completeMultiPartUpload := objectAPI.CompleteMultipartUpload
if api.CacheAPI() != nil {
completeMultiPartUpload = api.CacheAPI().CompleteMultipartUpload
}
// This code is specifically to handle the requirements for slow
// complete multipart upload operations on FS mode.
writeErrorResponseWithoutXMLHeader := func(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
switch err.Code {
case "SlowDown", "XMinioServerNotInitialized", "XMinioReadQuorum", "XMinioWriteQuorum":
// Set retry-after header to indicate user-agents to retry request after 120secs.
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
w.Header().Set("Retry-After", "120")
}
// Generate error response.
errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path,
w.Header().Get(responseRequestIDKey), w.Header().Get(responseDeploymentIDKey))
encodedErrorResponse, _ := xml.Marshal(errorResponse)
setCommonHeaders(w)
w.Header().Set("Content-Type", string(mimeXML))
w.Write(encodedErrorResponse)
w.(http.Flusher).Flush()
}
w = &whiteSpaceWriter{ResponseWriter: w, Flusher: w.(http.Flusher)}
completeDoneCh := sendWhiteSpace(ctx, w)
objInfo, err := completeMultiPartUpload(ctx, bucket, object, uploadID, completeParts, opts)
// Stop writing white spaces to the client. Note that close(doneCh) style is not used as it
// can cause white space to be written after we send XML response in a race condition.
headerWritten := <-completeDoneCh
if err != nil {
if headerWritten {
writeErrorResponseWithoutXMLHeader(ctx, w, toAPIError(ctx, err), r.URL)
} else {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
}
return
}
// Get object location.
location := getObjectLocation(r, globalDomainNames, bucket, object)
// Generate complete multipart response.
response := generateCompleteMultpartUploadResponse(bucket, object, location, objInfo.ETag)
var encodedSuccessResponse []byte
if !headerWritten {
encodedSuccessResponse = encodeResponse(response)
} else {
encodedSuccessResponse, err = xml.Marshal(response)
if err != nil {
writeErrorResponseWithoutXMLHeader(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
// Set etag.
w.Header()["ETag"] = []string{"\"" + objInfo.ETag + "\""}
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
// Get host and port from Request.RemoteAddr.
if objectAPI.IsEncryptionSupported() {
if crypto.IsEncrypted(objInfo.UserDefined) {
objInfo.Size, _ = objInfo.DecryptedSize()
}
}
// Notify object created event.
sendEvent(eventArgs{
EventName: event.ObjectCreatedCompleteMultipartUpload,
BucketName: bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
})
}
/// Delete objectAPIHandlers
// DeleteObjectHandler - delete an object
func (api objectAPIHandlers) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "DeleteObject")
defer logger.AuditLog(w, r, "DeleteObject", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.DeleteObjectAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
if vid := r.URL.Query().Get("versionId"); vid != "" && vid != "null" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoSuchVersion), r.URL, guessIsBrowserReq(r))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
// Not required to check whether given object exists or not, because
// DeleteObject is always successful irrespective of object existence.
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
return
}
if globalDNSConfig != nil {
_, err := globalDNSConfig.Get(bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectDELETE.html
if err := deleteObject(ctx, objectAPI, api.CacheAPI(), bucket, object, r); err != nil {
switch err.(type) {
case BucketNotFound:
// When bucket doesn't exist specially handle it.
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Ignore delete object errors while replying to client, since we are suppposed to reply only 204.
}
writeSuccessNoContent(w)
}