package s3api import ( "crypto/sha1" "encoding/xml" "fmt" "io" "net/http" "net/url" "strconv" "strings" "github.com/seaweedfs/seaweedfs/weed/glog" "github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants" "github.com/seaweedfs/seaweedfs/weed/s3api/s3err" weed_server "github.com/seaweedfs/seaweedfs/weed/server" "github.com/aws/aws-sdk-go/aws" "github.com/aws/aws-sdk-go/service/s3" ) const ( maxObjectListSizeLimit = 10000 // Limit number of objects in a listObjectsResponse. maxUploadsList = 10000 // Limit number of uploads in a listUploadsResponse. maxPartsList = 10000 // Limit number of parts in a listPartsResponse. globalMaxPartID = 100000 ) // NewMultipartUploadHandler - New multipart upload. func (s3a *S3ApiServer) NewMultipartUploadHandler(w http.ResponseWriter, r *http.Request) { bucket, object := s3_constants.GetBucketAndObject(r) createMultipartUploadInput := &s3.CreateMultipartUploadInput{ Bucket: aws.String(bucket), Key: objectKey(aws.String(object)), Metadata: make(map[string]*string), } metadata := weed_server.SaveAmzMetaData(r, nil, false) for k, v := range metadata { createMultipartUploadInput.Metadata[k] = aws.String(string(v)) } contentType := r.Header.Get("Content-Type") if contentType != "" { createMultipartUploadInput.ContentType = &contentType } response, errCode := s3a.createMultipartUpload(createMultipartUploadInput) glog.V(2).Info("NewMultipartUploadHandler", string(s3err.EncodeXMLResponse(response)), errCode) if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, errCode) return } writeSuccessResponseXML(w, r, response) } // CompleteMultipartUploadHandler - Completes multipart upload. func (s3a *S3ApiServer) CompleteMultipartUploadHandler(w http.ResponseWriter, r *http.Request) { // https://docs.aws.amazon.com/AmazonS3/latest/API/API_CompleteMultipartUpload.html bucket, object := s3_constants.GetBucketAndObject(r) parts := &CompleteMultipartUpload{} if err := xmlDecoder(r.Body, parts, r.ContentLength); err != nil { s3err.WriteErrorResponse(w, r, s3err.ErrMalformedXML) return } // Get upload id. uploadID, _, _, _ := getObjectResources(r.URL.Query()) err := s3a.checkUploadId(object, uploadID) if err != nil { s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload) return } response, errCode := s3a.completeMultipartUpload(&s3.CompleteMultipartUploadInput{ Bucket: aws.String(bucket), Key: objectKey(aws.String(object)), UploadId: aws.String(uploadID), }, parts) glog.V(2).Info("CompleteMultipartUploadHandler", string(s3err.EncodeXMLResponse(response)), errCode) if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, errCode) return } writeSuccessResponseXML(w, r, response) } // AbortMultipartUploadHandler - Aborts multipart upload. func (s3a *S3ApiServer) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Request) { bucket, object := s3_constants.GetBucketAndObject(r) // Get upload id. uploadID, _, _, _ := getObjectResources(r.URL.Query()) err := s3a.checkUploadId(object, uploadID) if err != nil { s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload) return } response, errCode := s3a.abortMultipartUpload(&s3.AbortMultipartUploadInput{ Bucket: aws.String(bucket), Key: objectKey(aws.String(object)), UploadId: aws.String(uploadID), }) if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, errCode) return } glog.V(2).Info("AbortMultipartUploadHandler", string(s3err.EncodeXMLResponse(response))) //https://docs.aws.amazon.com/AmazonS3/latest/API/API_AbortMultipartUpload.html s3err.WriteEmptyResponse(w, r, http.StatusNoContent) s3err.PostLog(r, http.StatusNoContent, s3err.ErrNone) } // ListMultipartUploadsHandler - Lists multipart uploads. func (s3a *S3ApiServer) ListMultipartUploadsHandler(w http.ResponseWriter, r *http.Request) { bucket, _ := s3_constants.GetBucketAndObject(r) prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, encodingType := getBucketMultipartResources(r.URL.Query()) if maxUploads < 0 { s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxUploads) return } if keyMarker != "" { // Marker not common with prefix is not implemented. if !strings.HasPrefix(keyMarker, prefix) { s3err.WriteErrorResponse(w, r, s3err.ErrNotImplemented) return } } response, errCode := s3a.listMultipartUploads(&s3.ListMultipartUploadsInput{ Bucket: aws.String(bucket), Delimiter: aws.String(delimiter), EncodingType: aws.String(encodingType), KeyMarker: aws.String(keyMarker), MaxUploads: aws.Int64(int64(maxUploads)), Prefix: aws.String(prefix), UploadIdMarker: aws.String(uploadIDMarker), }) glog.V(2).Infof("ListMultipartUploadsHandler %s errCode=%d", string(s3err.EncodeXMLResponse(response)), errCode) if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, errCode) return } // TODO handle encodingType writeSuccessResponseXML(w, r, response) } // ListObjectPartsHandler - Lists object parts in a multipart upload. func (s3a *S3ApiServer) ListObjectPartsHandler(w http.ResponseWriter, r *http.Request) { bucket, object := s3_constants.GetBucketAndObject(r) uploadID, partNumberMarker, maxParts, _ := getObjectResources(r.URL.Query()) if partNumberMarker < 0 { s3err.WriteErrorResponse(w, r, s3err.ErrInvalidPartNumberMarker) return } if maxParts < 0 { s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxParts) return } err := s3a.checkUploadId(object, uploadID) if err != nil { s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload) return } response, errCode := s3a.listObjectParts(&s3.ListPartsInput{ Bucket: aws.String(bucket), Key: objectKey(aws.String(object)), MaxParts: aws.Int64(int64(maxParts)), PartNumberMarker: aws.Int64(int64(partNumberMarker)), UploadId: aws.String(uploadID), }) if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, errCode) return } glog.V(2).Infof("ListObjectPartsHandler %s count=%d", string(s3err.EncodeXMLResponse(response)), len(response.Part)) writeSuccessResponseXML(w, r, response) } // PutObjectPartHandler - Put an object part in a multipart upload. func (s3a *S3ApiServer) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) { bucket, object := s3_constants.GetBucketAndObject(r) uploadID := r.URL.Query().Get("uploadId") err := s3a.checkUploadId(object, uploadID) if err != nil { s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload) return } partIDString := r.URL.Query().Get("partNumber") partID, err := strconv.Atoi(partIDString) if err != nil { s3err.WriteErrorResponse(w, r, s3err.ErrInvalidPart) return } if partID > globalMaxPartID { s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxParts) return } dataReader := r.Body if s3a.iam.isEnabled() { rAuthType := getRequestAuthType(r) var s3ErrCode s3err.ErrorCode switch rAuthType { case authTypeStreamingSigned: dataReader, s3ErrCode = s3a.iam.newSignV4ChunkedReader(r) case authTypeSignedV2, authTypePresignedV2: _, s3ErrCode = s3a.iam.isReqAuthenticatedV2(r) case authTypePresigned, authTypeSigned: _, s3ErrCode = s3a.iam.reqSignatureV4Verify(r) } if s3ErrCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, s3ErrCode) return } } defer dataReader.Close() glog.V(2).Infof("PutObjectPartHandler %s %s %04d", bucket, uploadID, partID) uploadUrl := fmt.Sprintf("http://%s%s/%s/%04d.part", s3a.option.Filer.ToHttpAddress(), s3a.genUploadsFolder(bucket), uploadID, partID) if partID == 1 && r.Header.Get("Content-Type") == "" { dataReader = mimeDetect(r, dataReader) } destination := fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, bucket, object) etag, errCode := s3a.putToFiler(r, uploadUrl, dataReader, destination) if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, r, errCode) return } setEtag(w, etag) writeSuccessResponseEmpty(w, r) } func (s3a *S3ApiServer) genUploadsFolder(bucket string) string { return fmt.Sprintf("%s/%s/%s", s3a.option.BucketsPath, bucket, s3_constants.MultipartUploadsFolder) } // Generate uploadID hash string from object func (s3a *S3ApiServer) generateUploadID(object string) string { if strings.HasPrefix(object, "/") { object = object[1:] } h := sha1.New() h.Write([]byte(object)) return fmt.Sprintf("%x", h.Sum(nil)) } // Check object name and uploadID when processing multipart uploading func (s3a *S3ApiServer) checkUploadId(object string, id string) error { hash := s3a.generateUploadID(object) if !strings.HasPrefix(id, hash) { glog.Errorf("object %s and uploadID %s are not matched", object, id) return fmt.Errorf("object %s and uploadID %s are not matched", object, id) } return nil } // Parse bucket url queries for ?uploads func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int, encodingType string) { prefix = values.Get("prefix") keyMarker = values.Get("key-marker") uploadIDMarker = values.Get("upload-id-marker") delimiter = values.Get("delimiter") if values.Get("max-uploads") != "" { maxUploads, _ = strconv.Atoi(values.Get("max-uploads")) } else { maxUploads = maxUploadsList } encodingType = values.Get("encoding-type") return } // Parse object url queries func getObjectResources(values url.Values) (uploadID string, partNumberMarker, maxParts int, encodingType string) { uploadID = values.Get("uploadId") partNumberMarker, _ = strconv.Atoi(values.Get("part-number-marker")) if values.Get("max-parts") != "" { maxParts, _ = strconv.Atoi(values.Get("max-parts")) } else { maxParts = maxPartsList } encodingType = values.Get("encoding-type") return } func xmlDecoder(body io.Reader, v interface{}, size int64) error { var lbody io.Reader if size > 0 { lbody = io.LimitReader(body, size) } else { lbody = body } d := xml.NewDecoder(lbody) d.CharsetReader = func(label string, input io.Reader) (io.Reader, error) { return input, nil } return d.Decode(v) } type CompleteMultipartUpload struct { Parts []CompletedPart `xml:"Part"` } type CompletedPart struct { ETag string PartNumber int }