/* * 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) }