package weed_server import ( "bufio" "bytes" "encoding/json" "errors" "fmt" "github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants" "io" "io/fs" "mime/multipart" "net/http" "net/url" "path/filepath" "strconv" "strings" "time" "google.golang.org/grpc" "github.com/seaweedfs/seaweedfs/weed/glog" "github.com/seaweedfs/seaweedfs/weed/operation" "github.com/seaweedfs/seaweedfs/weed/stats" "github.com/seaweedfs/seaweedfs/weed/storage/needle" "github.com/seaweedfs/seaweedfs/weed/util" "github.com/gorilla/mux" ) var serverStats *stats.ServerStats var startTime = time.Now() func init() { serverStats = stats.NewServerStats() go serverStats.Start() } // bodyAllowedForStatus is a copy of http.bodyAllowedForStatus non-exported function. func bodyAllowedForStatus(status int) bool { switch { case status >= 100 && status <= 199: return false case status == http.StatusNoContent: return false case status == http.StatusNotModified: return false } return true } func writeJson(w http.ResponseWriter, r *http.Request, httpStatus int, obj interface{}) (err error) { if !bodyAllowedForStatus(httpStatus) { return } var bytes []byte if obj != nil { if r.FormValue("pretty") != "" { bytes, err = json.MarshalIndent(obj, "", " ") } else { bytes, err = json.Marshal(obj) } } if err != nil { return } if httpStatus >= 400 { glog.V(0).Infof("response method:%s URL:%s with httpStatus:%d and JSON:%s", r.Method, r.URL.String(), httpStatus, string(bytes)) } callback := r.FormValue("callback") if callback == "" { w.Header().Set("Content-Type", "application/json") w.WriteHeader(httpStatus) if httpStatus == http.StatusNotModified { return } _, err = w.Write(bytes) } else { w.Header().Set("Content-Type", "application/javascript") w.WriteHeader(httpStatus) if httpStatus == http.StatusNotModified { return } if _, err = w.Write([]uint8(callback)); err != nil { return } if _, err = w.Write([]uint8("(")); err != nil { return } fmt.Fprint(w, string(bytes)) if _, err = w.Write([]uint8(")")); err != nil { return } } return } // wrapper for writeJson - just logs errors func writeJsonQuiet(w http.ResponseWriter, r *http.Request, httpStatus int, obj interface{}) { if err := writeJson(w, r, httpStatus, obj); err != nil { glog.V(0).Infof("error writing JSON status %s %d: %v", r.URL, httpStatus, err) glog.V(1).Infof("JSON content: %+v", obj) } } func writeJsonError(w http.ResponseWriter, r *http.Request, httpStatus int, err error) { m := make(map[string]interface{}) m["error"] = err.Error() glog.V(1).Infof("error JSON response status %d: %s", httpStatus, m["error"]) writeJsonQuiet(w, r, httpStatus, m) } func debug(params ...interface{}) { glog.V(4).Infoln(params...) } func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterFn operation.GetMasterFn, grpcDialOption grpc.DialOption) { m := make(map[string]interface{}) if r.Method != "POST" { writeJsonError(w, r, http.StatusMethodNotAllowed, errors.New("Only submit via POST!")) return } debug("parsing upload file...") bytesBuffer := bufPool.Get().(*bytes.Buffer) defer bufPool.Put(bytesBuffer) pu, pe := needle.ParseUpload(r, 256*1024*1024, bytesBuffer) if pe != nil { writeJsonError(w, r, http.StatusBadRequest, pe) return } debug("assigning file id for", pu.FileName) r.ParseForm() count := uint64(1) if r.FormValue("count") != "" { count, pe = strconv.ParseUint(r.FormValue("count"), 10, 32) if pe != nil { writeJsonError(w, r, http.StatusBadRequest, pe) return } } ar := &operation.VolumeAssignRequest{ Count: count, DataCenter: r.FormValue("dataCenter"), Rack: r.FormValue("rack"), Replication: r.FormValue("replication"), Collection: r.FormValue("collection"), Ttl: r.FormValue("ttl"), DiskType: r.FormValue("disk"), } assignResult, ae := operation.Assign(masterFn, grpcDialOption, ar) if ae != nil { writeJsonError(w, r, http.StatusInternalServerError, ae) return } url := "http://" + assignResult.Url + "/" + assignResult.Fid if pu.ModifiedTime != 0 { url = url + "?ts=" + strconv.FormatUint(pu.ModifiedTime, 10) } debug("upload file to store", url) uploadOption := &operation.UploadOption{ UploadUrl: url, Filename: pu.FileName, Cipher: false, IsInputCompressed: pu.IsGzipped, MimeType: pu.MimeType, PairMap: pu.PairMap, Jwt: assignResult.Auth, } uploadResult, err := operation.UploadData(pu.Data, uploadOption) if err != nil { writeJsonError(w, r, http.StatusInternalServerError, err) return } m["fileName"] = pu.FileName m["fid"] = assignResult.Fid m["fileUrl"] = assignResult.PublicUrl + "/" + assignResult.Fid m["size"] = pu.OriginalDataSize m["eTag"] = uploadResult.ETag writeJsonQuiet(w, r, http.StatusCreated, m) return } func parseURLPath(path string) (vid, fid, filename, ext string, isVolumeIdOnly bool) { switch strings.Count(path, "/") { case 3: parts := strings.Split(path, "/") vid, fid, filename = parts[1], parts[2], parts[3] ext = filepath.Ext(filename) case 2: parts := strings.Split(path, "/") vid, fid = parts[1], parts[2] dotIndex := strings.LastIndex(fid, ".") if dotIndex > 0 { ext = fid[dotIndex:] fid = fid[0:dotIndex] } default: sepIndex := strings.LastIndex(path, "/") commaIndex := strings.LastIndex(path[sepIndex:], ",") if commaIndex <= 0 { vid, isVolumeIdOnly = path[sepIndex+1:], true return } dotIndex := strings.LastIndex(path[sepIndex:], ".") vid = path[sepIndex+1 : commaIndex] fid = path[commaIndex+1:] ext = "" if dotIndex > 0 { fid = path[commaIndex+1 : dotIndex] ext = path[dotIndex:] } } return } func statsHealthHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.Version() writeJsonQuiet(w, r, http.StatusOK, m) } func statsCounterHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.Version() m["Counters"] = serverStats writeJsonQuiet(w, r, http.StatusOK, m) } func statsMemoryHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.Version() m["Memory"] = stats.MemStat() writeJsonQuiet(w, r, http.StatusOK, m) } var StaticFS fs.FS func handleStaticResources(defaultMux *http.ServeMux) { defaultMux.Handle("/favicon.ico", http.FileServer(http.FS(StaticFS))) defaultMux.Handle("/seaweedfsstatic/", http.StripPrefix("/seaweedfsstatic", http.FileServer(http.FS(StaticFS)))) } func handleStaticResources2(r *mux.Router) { r.Handle("/favicon.ico", http.FileServer(http.FS(StaticFS))) r.PathPrefix("/seaweedfsstatic/").Handler(http.StripPrefix("/seaweedfsstatic", http.FileServer(http.FS(StaticFS)))) } func adjustPassthroughHeaders(w http.ResponseWriter, r *http.Request, filename string) { for header, values := range r.Header { if normalizedHeader, ok := s3_constants.PassThroughHeaders[strings.ToLower(header)]; ok { w.Header()[normalizedHeader] = values } } adjustHeaderContentDisposition(w, r, filename) } func adjustHeaderContentDisposition(w http.ResponseWriter, r *http.Request, filename string) { if contentDisposition := w.Header().Get("Content-Disposition"); contentDisposition != "" { return } if filename != "" { filename = url.QueryEscape(filename) contentDisposition := "inline" if r.FormValue("dl") != "" { if dl, _ := strconv.ParseBool(r.FormValue("dl")); dl { contentDisposition = "attachment" } } w.Header().Set("Content-Disposition", contentDisposition+`; filename="`+fileNameEscaper.Replace(filename)+`"`) } } func processRangeRequest(r *http.Request, w http.ResponseWriter, totalSize int64, mimeType string, writeFn func(writer io.Writer, offset int64, size int64) error) error { rangeReq := r.Header.Get("Range") bufferedWriter := bufio.NewWriterSize(w, 128*1024) defer bufferedWriter.Flush() if rangeReq == "" { w.Header().Set("Content-Length", strconv.FormatInt(totalSize, 10)) if err := writeFn(bufferedWriter, 0, totalSize); err != nil { glog.Errorf("processRangeRequest: %v", err) http.Error(w, err.Error(), http.StatusInternalServerError) return fmt.Errorf("processRangeRequest: %v", err) } return nil } //the rest is dealing with partial content request //mostly copy from src/pkg/net/http/fs.go ranges, err := parseRange(rangeReq, totalSize) if err != nil { glog.Errorf("processRangeRequest headers: %+v err: %v", w.Header(), err) http.Error(w, err.Error(), http.StatusRequestedRangeNotSatisfiable) return fmt.Errorf("processRangeRequest header: %v", err) } if sumRangesSize(ranges) > totalSize { // The total number of bytes in all the ranges // is larger than the size of the file by // itself, so this is probably an attack, or a // dumb client. Ignore the range request. return nil } if len(ranges) == 0 { return nil } if len(ranges) == 1 { // RFC 2616, Section 14.16: // "When an HTTP message includes the content of a single // range (for example, a response to a request for a // single range, or to a request for a set of ranges // that overlap without any holes), this content is // transmitted with a Content-Range header, and a // Content-Length header showing the number of bytes // actually transferred. // ... // A response to a request for a single range MUST NOT // be sent using the multipart/byteranges media type." ra := ranges[0] w.Header().Set("Content-Length", strconv.FormatInt(ra.length, 10)) w.Header().Set("Content-Range", ra.contentRange(totalSize)) w.WriteHeader(http.StatusPartialContent) err = writeFn(bufferedWriter, ra.start, ra.length) if err != nil { glog.Errorf("processRangeRequest range[0]: %+v err: %v", w.Header(), err) http.Error(w, err.Error(), http.StatusInternalServerError) return fmt.Errorf("processRangeRequest range[0]: %v", err) } return nil } // process multiple ranges for _, ra := range ranges { if ra.start > totalSize { http.Error(w, "Out of Range", http.StatusRequestedRangeNotSatisfiable) return fmt.Errorf("out of range: %v", err) } } sendSize := rangesMIMESize(ranges, mimeType, totalSize) pr, pw := io.Pipe() mw := multipart.NewWriter(pw) w.Header().Set("Content-Type", "multipart/byteranges; boundary="+mw.Boundary()) sendContent := pr defer pr.Close() // cause writing goroutine to fail and exit if CopyN doesn't finish. go func() { for _, ra := range ranges { part, e := mw.CreatePart(ra.mimeHeader(mimeType, totalSize)) if e != nil { pw.CloseWithError(e) return } if e = writeFn(part, ra.start, ra.length); e != nil { pw.CloseWithError(e) return } } mw.Close() pw.Close() }() if w.Header().Get("Content-Encoding") == "" { w.Header().Set("Content-Length", strconv.FormatInt(sendSize, 10)) } w.WriteHeader(http.StatusPartialContent) if _, err := io.CopyN(bufferedWriter, sendContent, sendSize); err != nil { glog.Errorf("processRangeRequest err: %v", err) http.Error(w, "Internal Error", http.StatusInternalServerError) return fmt.Errorf("processRangeRequest err: %v", err) } return nil }