diff options
Diffstat (limited to 'mediaapi/routing/download.go')
| -rw-r--r-- | mediaapi/routing/download.go | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/mediaapi/routing/download.go b/mediaapi/routing/download.go index fa1bb257..7e121de3 100644 --- a/mediaapi/routing/download.go +++ b/mediaapi/routing/download.go @@ -47,6 +47,10 @@ const mediaIDCharacters = "A-Za-z0-9_=-" // Note: unfortunately regex.MustCompile() cannot be assigned to a const var mediaIDRegex = regexp.MustCompile("^[" + mediaIDCharacters + "]+$") +// Regular expressions to help us cope with Content-Disposition parsing +var rfc2183 = regexp.MustCompile(`filename\=utf-8\"(.*)\"`) +var rfc6266 = regexp.MustCompile(`filename\*\=utf-8\'\'(.*)`) + // downloadRequest metadata included in or derivable from a download or thumbnail request // https://matrix.org/docs/spec/client_server/r0.2.0.html#get-matrix-media-r0-download-servername-mediaid // http://matrix.org/docs/spec/client_server/r0.2.0.html#get-matrix-media-r0-thumbnail-servername-mediaid @@ -378,8 +382,8 @@ func (r *downloadRequest) addDownloadFilenameToHeaders( } else { // For UTF-8 filenames, we quote always, as that's the standard w.Header().Set("Content-Disposition", fmt.Sprintf( - `inline; filename=utf-8"%s"`, - unescaped, + `inline; filename*=utf-8''%s`, + url.QueryEscape(unescaped), )) } @@ -700,9 +704,22 @@ func (r *downloadRequest) fetchRemoteFile( } r.MediaMetadata.FileSizeBytes = types.FileSizeBytes(contentLength) r.MediaMetadata.ContentType = types.ContentType(resp.Header.Get("Content-Type")) - _, params, err := mime.ParseMediaType(resp.Header.Get("Content-Disposition")) - if err == nil && params["filename"] != "" { - r.MediaMetadata.UploadName = types.Filename(params["filename"]) + + dispositionHeader := resp.Header.Get("Content-Disposition") + if _, params, e := mime.ParseMediaType(dispositionHeader); e == nil { + if params["filename"] != "" { + r.MediaMetadata.UploadName = types.Filename(params["filename"]) + } else if params["filename*"] != "" { + r.MediaMetadata.UploadName = types.Filename(params["filename*"]) + } + } else { + if matches := rfc6266.FindStringSubmatch(dispositionHeader); len(matches) > 1 { + // Always prefer the RFC6266 UTF-8 name if possible + r.MediaMetadata.UploadName = types.Filename(matches[1]) + } else if matches := rfc2183.FindStringSubmatch(dispositionHeader); len(matches) > 1 { + // Otherwise, see if an RFC2183 name was provided (ASCII only) + r.MediaMetadata.UploadName = types.Filename(matches[1]) + } } r.Logger.Info("Transferring remote file") |