mirror of
https://gitlab.xiph.org/xiph/ezstream.git
synced 2024-09-15 04:08:07 -04:00
Rework quoting around metadata
* Do not shell-quote strings in the metadata token expansion function * This fixes https://github.com/xiph/ezstream/issues/6 * Expand all tokens at the same time in a way that ensures metadata is not additional input to expansion * Simplify several functions and remove unused functionality
This commit is contained in:
Moritz Grimm
parent
c21d47b8a9
commit
77f794a41e
195
src/ezstream.c
195
src/ezstream.c
@ -53,7 +53,7 @@ volatile sig_atomic_t queryMetadata;
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volatile sig_atomic_t quit;
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void sig_handler(int);
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char * buildReencodeCommand(const char *, const char *, metadata_t);
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char * _build_reencode_cmd(const char *, const char *, metadata_t);
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metadata_t getMetadata(const char *);
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FILE * openResource(stream_t, const char *, int *, metadata_t *,
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int *, long *);
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@ -89,15 +89,19 @@ sig_handler(int sig)
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}
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char *
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buildReencodeCommand(const char *extension, const char *fileName,
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_build_reencode_cmd(const char *extension, const char *fileName,
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metadata_t mdata)
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{
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cfg_decoder_t decoder;
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cfg_encoder_t encoder;
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char *dec_str, *enc_str;
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char *commandString;
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size_t commandStringLen;
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char *localTitle, *localArtist, *localMetaString, *localAlbum;
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cfg_decoder_t decoder;
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cfg_encoder_t encoder;
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char *artist, *album, *title, *songinfo, *tmp;
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char *filename_quoted;
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char *custom_songinfo;
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struct util_dict dicts[6];
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char *dec_str;
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char *enc_str;
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char *cmd_str;
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size_t cmd_str_size;
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decoder = cfg_decoder_find(extension);
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if (!decoder) {
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@ -112,124 +116,89 @@ buildReencodeCommand(const char *extension, const char *fileName,
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return (NULL);
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}
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localTitle = util_utf82char(metadata_get_title(mdata), ICONV_REPLACE);
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localArtist = util_utf82char(metadata_get_artist(mdata), ICONV_REPLACE);
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localAlbum = util_utf82char(metadata_get_album(mdata), ICONV_REPLACE);
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localMetaString = util_utf82char(metadata_get_string(mdata),
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ICONV_REPLACE);
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tmp = util_utf82char(metadata_get_artist(mdata));
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artist = util_shellquote(tmp);
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xfree(tmp);
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tmp = util_utf82char(metadata_get_album(mdata));
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album = util_shellquote(tmp);
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xfree(tmp);
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tmp = util_utf82char(metadata_get_title(mdata));
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title = util_shellquote(tmp);
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xfree(tmp);
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tmp = util_utf82char(metadata_get_string(mdata));
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songinfo = util_shellquote(tmp);
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xfree(tmp);
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filename_quoted = util_shellquote(fileName);
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dec_str = util_replacestring(cfg_decoder_get_program(decoder),
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PLACEHOLDER_TRACK, fileName);
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if (strstr(dec_str, PLACEHOLDER_ARTIST) != NULL) {
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char *tmpStr = util_replacestring(dec_str, PLACEHOLDER_ARTIST,
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localArtist);
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xfree(dec_str);
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dec_str = tmpStr;
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}
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if (strstr(dec_str, PLACEHOLDER_TITLE) != NULL) {
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char *tmpStr = util_replacestring(dec_str, PLACEHOLDER_TITLE,
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localTitle);
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xfree(dec_str);
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dec_str = tmpStr;
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}
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if (strstr(dec_str, PLACEHOLDER_ALBUM) != NULL) {
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char *tmpStr = util_replacestring(dec_str, PLACEHOLDER_ALBUM,
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localAlbum);
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xfree(dec_str);
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dec_str = tmpStr;
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}
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/*
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* if meta
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* if (prog && format)
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* metatoformat
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* if (prog && format)
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* metatoformat
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* else
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* if (!prog && title)
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* emptymeta
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* else
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* if (!prog && title)
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* emptymeta
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* else
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* replacemeta
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* replacemeta
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*/
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if (strstr(dec_str, PLACEHOLDER_METADATA) != NULL) {
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if (cfg_get_metadata_program() &&
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cfg_get_metadata_format_str()) {
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char *mdataString = metadata_format_string(mdata,
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cfg_get_metadata_format_str());
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char *tmpStr = util_replacestring(dec_str,
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PLACEHOLDER_METADATA, mdataString);
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xfree(dec_str);
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xfree(mdataString);
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dec_str = tmpStr;
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if (cfg_get_metadata_program() &&
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cfg_get_metadata_format_str()) {
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char *utf8, *unquoted;
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utf8 = metadata_format_string(mdata,
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cfg_get_metadata_format_str());
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unquoted = util_utf82char(utf8);
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xfree(utf8);
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custom_songinfo = util_shellquote(unquoted);
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xfree(unquoted);
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} else {
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if (!cfg_get_metadata_program() &&
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strstr(cfg_decoder_get_program(decoder),
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PLACEHOLDER_TITLE) != NULL) {
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custom_songinfo = xstrdup("");
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} else {
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if (!cfg_get_metadata_program() &&
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strstr(dec_str, PLACEHOLDER_TITLE) != NULL) {
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char *tmpStr = util_replacestring(dec_str,
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PLACEHOLDER_METADATA, "");
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xfree(dec_str);
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dec_str = tmpStr;
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} else {
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char *tmpStr = util_replacestring(dec_str,
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PLACEHOLDER_METADATA, localMetaString);
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xfree(dec_str);
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dec_str = tmpStr;
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}
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custom_songinfo = xstrdup(songinfo);
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}
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}
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if (!cfg_encoder_get_program(encoder))
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return (dec_str);
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memset(dicts, 0, sizeof(dicts));
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dicts[0].from = PLACEHOLDER_ARTIST;
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dicts[0].to = artist;
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dicts[1].from = PLACEHOLDER_ALBUM;
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dicts[1].to = album;
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dicts[2].from = PLACEHOLDER_TITLE;
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dicts[2].to = title;
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dicts[3].from = PLACEHOLDER_TRACK;
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dicts[3].to = filename_quoted;
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dicts[4].from = PLACEHOLDER_METADATA;
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dicts[4].to = custom_songinfo;
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enc_str = util_replacestring(cfg_encoder_get_program(encoder),
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PLACEHOLDER_ARTIST, localArtist);
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if (strstr(enc_str, PLACEHOLDER_TITLE) != NULL) {
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char *tmpStr = util_replacestring(enc_str, PLACEHOLDER_TITLE,
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localTitle);
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xfree(enc_str);
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enc_str = tmpStr;
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}
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if (strstr(enc_str, PLACEHOLDER_ALBUM) != NULL) {
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char *tmpStr = util_replacestring(enc_str, PLACEHOLDER_ALBUM,
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localAlbum);
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xfree(enc_str);
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enc_str = tmpStr;
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}
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if (strstr(enc_str, PLACEHOLDER_METADATA) != NULL) {
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if (cfg_get_metadata_program() &&
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cfg_get_metadata_format_str()) {
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char *mdataString = metadata_format_string(mdata,
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cfg_get_metadata_format_str());
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char *tmpStr = util_replacestring(enc_str,
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PLACEHOLDER_METADATA, mdataString);
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xfree(enc_str);
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xfree(mdataString);
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enc_str = tmpStr;
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} else {
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if (!cfg_get_metadata_program() &&
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strstr(enc_str, PLACEHOLDER_TITLE) != NULL) {
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char *tmpStr = util_replacestring(enc_str,
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PLACEHOLDER_METADATA, "");
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xfree(enc_str);
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enc_str = tmpStr;
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} else {
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char *tmpStr = util_replacestring(enc_str,
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PLACEHOLDER_METADATA, localMetaString);
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xfree(enc_str);
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enc_str = tmpStr;
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}
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}
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dec_str = util_expand_words(cfg_decoder_get_program(decoder), dicts);
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if (!cfg_get_metadata_program() &&
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strstr(cfg_encoder_get_program(encoder),
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PLACEHOLDER_TITLE) != NULL) {
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xfree(custom_songinfo);
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dicts[4].to = custom_songinfo = xstrdup("");
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}
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commandStringLen = strlen(dec_str) + strlen(" | ") +
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strlen(enc_str) + 1;
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commandString = xcalloc(commandStringLen, sizeof(char));
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snprintf(commandString, commandStringLen, "%s | %s", dec_str,
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enc_str);
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enc_str = util_expand_words(cfg_encoder_get_program(encoder), dicts);
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xfree(localTitle);
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xfree(localArtist);
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xfree(localMetaString);
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cmd_str_size = strlen(dec_str) + strlen(" | ") + strlen(enc_str) + 1;
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cmd_str = xcalloc(cmd_str_size, sizeof(char));
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snprintf(cmd_str, cmd_str_size, "%s | %s", dec_str, enc_str);
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xfree(dec_str);
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xfree(enc_str);
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return (commandString);
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xfree(artist);
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xfree(album);
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xfree(title);
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xfree(filename_quoted);
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xfree(custom_songinfo);
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return (cmd_str);
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}
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metadata_t
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@ -325,7 +294,7 @@ openResource(stream_t stream, const char *fileName, int *popenFlag,
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if (cfg_get_stream_encoder()) {
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int stderr_fd = -1;
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pCommandString = buildReencodeCommand(extension, fileName,
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pCommandString = _build_reencode_cmd(extension, fileName,
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mdata);
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if (mdata_p != NULL)
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*mdata_p = mdata;
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@ -588,7 +557,7 @@ streamFile(stream_t stream, const char *fileName)
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char *tmp, *metaData;
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tmp = metadata_assemble_string(mdata);
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if ((metaData = util_utf82char(tmp, ICONV_REPLACE)) == NULL)
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if ((metaData = util_utf82char(tmp)) == NULL)
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metaData = xstrdup("(unknown title)");
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xfree(tmp);
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log_notice("streaming: %s (%s)", metaData,
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@ -176,7 +176,7 @@ metadata_get_name(const char *file)
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if (strlen(p1) == 0)
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name = xstrdup("[unknown]");
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else
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name = util_char2utf8(p1, ICONV_REPLACE);
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name = util_char2utf8(p1);
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xfree(filename);
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return (name);
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@ -371,16 +371,14 @@ metadata_program_update(struct metadata *md, enum metadata_request md_req)
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return (0);
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}
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if (fgets(buf, (int)sizeof(buf), filep) == NULL) {
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if (ferror(filep))
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log_error("%s: output read error: %s", md->filename,
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strerror(errno));
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memset(buf, 0, sizeof(buf));
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if (fgets(buf, (int)sizeof(buf), filep) == NULL &&
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ferror(filep)) {
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log_alert("%s: output read error: %s", md->filename,
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strerror(errno));
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pclose(filep);
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log_alert("program not (or no longer) usable: %s",
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md->filename);
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exit(1);
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}
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pclose(filep);
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if (strlen(buf) == sizeof(buf) - 1)
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@ -520,43 +518,22 @@ metadata_assemble_string(struct metadata *md)
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char *
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metadata_format_string(struct metadata *md, const char *format)
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{
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char *tmp, *str;
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struct util_dict dicts[6];
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if (format == NULL)
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return (NULL);
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str = xstrdup(format);
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memset(dicts, 0, sizeof(dicts));
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dicts[0].from = PLACEHOLDER_ARTIST;
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dicts[0].to = metadata_get_artist(md);
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dicts[1].from = PLACEHOLDER_ALBUM;
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dicts[1].to = metadata_get_album(md);
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dicts[2].from = PLACEHOLDER_TITLE;
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dicts[2].to = metadata_get_title(md);
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dicts[3].from = PLACEHOLDER_TRACK;
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dicts[3].to = metadata_get_filename(md);
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dicts[4].from = PLACEHOLDER_STRING;
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dicts[4].to = metadata_get_string(md);
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if (strstr(format, PLACEHOLDER_ARTIST) != NULL) {
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tmp = util_replacestring(str, PLACEHOLDER_ARTIST,
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metadata_get_artist(md));
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xfree(str);
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str = tmp;
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}
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if (strstr(format, PLACEHOLDER_TITLE) != NULL) {
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tmp = util_replacestring(str, PLACEHOLDER_TITLE,
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metadata_get_title(md));
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xfree(str);
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str = tmp;
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}
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if (strstr(format, PLACEHOLDER_STRING) != NULL) {
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tmp = util_replacestring(str, PLACEHOLDER_STRING,
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metadata_get_string(md));
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xfree(str);
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str = tmp;
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}
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if (strstr(format, PLACEHOLDER_TRACK) != NULL) {
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tmp = util_replacestring(str, PLACEHOLDER_TRACK,
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metadata_get_filename(md));
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xfree(str);
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str = tmp;
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}
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if (strstr(format, PLACEHOLDER_ALBUM) != NULL) {
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tmp = util_replacestring(str, PLACEHOLDER_ALBUM,
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metadata_get_album(md));
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xfree(str);
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str = tmp;
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}
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return (str);
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return (util_expand_words(format, dicts));
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}
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87
src/util.c
87
src/util.c
@ -53,11 +53,11 @@ static FILE *pidfile_file;
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static pid_t pidfile_pid;
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static unsigned int pidfile_numlocks;
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static char * _iconvert(const char *, const char *, const char *, int);
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static char * _iconvert(const char *, const char *, const char *);
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static void _cleanup_pidfile(void);
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static char *
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_iconvert(const char *in_str, const char *from, const char *to, int mode)
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_iconvert(const char *in_str, const char *from, const char *to)
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{
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#ifdef HAVE_ICONV
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iconv_t cd;
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@ -73,26 +73,7 @@ _iconvert(const char *in_str, const char *from, const char *to, int mode)
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if (NULL == in_str)
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return (xstrdup(""));
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switch (mode) {
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size_t siz;
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case ICONV_TRANSLIT:
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siz = strlen(to) + strlen("//TRANSLIT") + 1;
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tocode = xcalloc(siz, sizeof(char));
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snprintf(tocode, siz, "%s//TRANSLIT", to);
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break;
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case ICONV_IGNORE:
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siz = strlen(to) + strlen("//IGNORE") + 1;
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tocode = xcalloc(siz, sizeof(char));
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snprintf(tocode, siz, "%s//IGNORE", to);
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break;
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case ICONV_REPLACE:
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/* FALLTHROUGH */
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default:
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tocode = xstrdup(to);
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break;
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}
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tocode = xstrdup(to);
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if ((cd = iconv_open(tocode, from)) == (iconv_t)-1 &&
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(cd = iconv_open("", from)) == (iconv_t)-1 &&
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(cd = iconv_open(tocode, "")) == (iconv_t)-1) {
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@ -147,7 +128,6 @@ _iconvert(const char *in_str, const char *from, const char *to, int mode)
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#else
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(void)from;
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(void)to;
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(void)mode;
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if (NULL == in_str)
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return (xstrdup(""));
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@ -249,7 +229,7 @@ util_strrcasecmp(const char *s, const char *sub)
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}
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char *
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util_char2utf8(const char *in_str, int mode)
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util_char2utf8(const char *in_str)
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{
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char *codeset;
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@ -257,11 +237,11 @@ util_char2utf8(const char *in_str, int mode)
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codeset = nl_langinfo((nl_item)CODESET);
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setlocale(LC_CTYPE, "C");
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return (_iconvert(in_str, codeset, "UTF-8", mode));
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return (_iconvert(in_str, codeset, "UTF-8"));
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}
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char *
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util_utf82char(const char *in_str, int mode)
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util_utf82char(const char *in_str)
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{
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char *codeset;
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@ -269,32 +249,51 @@ util_utf82char(const char *in_str, int mode)
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codeset = nl_langinfo((nl_item)CODESET);
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setlocale(LC_CTYPE, "C");
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return (_iconvert(in_str, "UTF-8", codeset, mode));
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return (_iconvert(in_str, "UTF-8", codeset));
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}
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char *
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util_replacestring(const char *source, const char *from, const char *to)
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util_expand_words(const char *in, struct util_dict dicts[])
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{
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char *to_quoted, *dest;
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size_t dest_size;
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const char *p1, *p2;
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size_t i;
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char *out;
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size_t out_size = strlen(in) + 1;
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to_quoted = util_shellquote(to);
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dest_size = strlen(source) + strlen(to_quoted) + 1;
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dest = xcalloc(dest_size, sizeof(char));
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/* empty input string? */
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if (1 == out_size)
|
||||
return (NULL);
|
||||
|
||||
p1 = source;
|
||||
p2 = strstr(p1, from);
|
||||
if (p2 != NULL) {
|
||||
strncat(dest, p1, (size_t)(p2 - p1));
|
||||
strlcat(dest, to_quoted, dest_size);
|
||||
p1 = p2 + strlen(from);
|
||||
out = xstrdup(in);
|
||||
i = out_size - 1;
|
||||
while (i--) {
|
||||
struct util_dict *d = dicts;
|
||||
|
||||
while (d && d->from) {
|
||||
if (0 == strncmp(&out[i], d->from, strlen(d->from))) {
|
||||
char *buf, *tmp;
|
||||
size_t buf_len;
|
||||
|
||||
buf_len = strlen(&out[i]) + strlen(d->to)
|
||||
- strlen(d->from);
|
||||
buf = xcalloc(buf_len + 1, sizeof(*buf));
|
||||
snprintf(buf, buf_len + 1, "%s%s",
|
||||
d->to, &out[i + strlen(d->from)]);
|
||||
|
||||
out_size += buf_len;
|
||||
tmp = xcalloc(out_size, sizeof(*tmp));
|
||||
snprintf(tmp, i + 1, "%s", out);
|
||||
snprintf(tmp + i, out_size - i, "%s", buf);
|
||||
free(buf);
|
||||
free(out);
|
||||
out = tmp;
|
||||
|
||||
break;
|
||||
}
|
||||
d++;
|
||||
}
|
||||
}
|
||||
strlcat(dest, p1, dest_size);
|
||||
|
||||
xfree(to_quoted);
|
||||
|
||||
return (dest);
|
||||
return (out);
|
||||
}
|
||||
|
||||
#define SHELLQUOTE_INLEN_MAX 8191UL
|
||||
|
||||
13
src/util.h
13
src/util.h
@ -16,16 +16,17 @@
|
||||
#ifndef __UTIL_H__
|
||||
#define __UTIL_H__
|
||||
|
||||
#define ICONV_REPLACE 0
|
||||
#define ICONV_TRANSLIT 1
|
||||
#define ICONV_IGNORE 2
|
||||
struct util_dict {
|
||||
const char *from;
|
||||
const char *to;
|
||||
};
|
||||
|
||||
int util_write_pid_file(const char *);
|
||||
int util_strrcmp(const char *, const char *);
|
||||
int util_strrcasecmp(const char *, const char *);
|
||||
char * util_char2utf8(const char *, int);
|
||||
char * util_utf82char(const char *, int);
|
||||
char * util_replacestring(const char *, const char *, const char *);
|
||||
char * util_char2utf8(const char *);
|
||||
char * util_utf82char(const char *);
|
||||
char * util_expand_words(const char *, struct util_dict[]);
|
||||
char * util_shellquote(const char *);
|
||||
int util_urlparse(const char *, char **, unsigned short *, char **);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user