+
+ openPath := "/" + strings.Join(targetPath, "/")
+ if f, err := fs.Open(openPath); os.IsNotExist(err) {
+ // Requested non-existent path
+ statusCode = http.StatusNotFound
+ } else if err != nil {
+ // Some other (unexpected) error
+ statusCode, statusText = http.StatusInternalServerError, err.Error()
+ } else if stat, err := f.Stat(); err != nil {
+ // Can't get Size/IsDir (shouldn't happen with a collectionFS!)
+ statusCode, statusText = http.StatusInternalServerError, err.Error()
+ } else if stat.IsDir() && !strings.HasSuffix(r.URL.Path, "/") {
+ // If client requests ".../dirname", redirect to
+ // ".../dirname/". This way, relative links in the
+ // listing for "dirname" can always be "fnm", never
+ // "dirname/fnm".
+ h.seeOtherWithCookie(w, r, r.URL.Path+"/", credentialsOK)
+ } else if stat.IsDir() {
+ h.serveDirectory(w, r, collection.Name, fs, openPath, true)
+ } else {
+ http.ServeContent(w, r, basename, stat.ModTime(), f)
+ if r.Header.Get("Range") == "" && int64(w.WroteBodyBytes()) != stat.Size() {
+ // If we wrote fewer bytes than expected, it's
+ // too late to change the real response code
+ // or send an error message to the client, but
+ // at least we can try to put some useful
+ // debugging info in the logs.
+ n, err := f.Read(make([]byte, 1024))
+ statusCode, statusText = http.StatusInternalServerError, fmt.Sprintf("f.Size()==%d but only wrote %d bytes; read(1024) returns %d, %s", stat.Size(), w.WroteBodyBytes(), n, err)
+
+ }