Fix file playback in many cases.
(closes issue #12115) Reported by: pj Patches: v2-fileexists.patch uploaded by dimas (license 88) (with modifications by me) Tested by: dimas, qwell, russell git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@106439 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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main/file.c
118
main/file.c
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@ -455,6 +455,37 @@ static int ast_filehelper(const char *filename, const void *arg2, const char *fm
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return res;
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return res;
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}
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}
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static int is_absolute_path(const char *filename)
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{
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return filename[0] == '/';
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}
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static int fileexists_test(const char *filename, const char *fmt, const char *lang,
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char *buf, int buflen)
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{
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if (buf == NULL) {
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return -1;
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}
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if (ast_language_is_prefix) { /* new layout */
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if (lang) {
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snprintf(buf, buflen, "%s/%s", lang, filename);
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} else {
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snprintf(buf, buflen, "%s", filename);
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}
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} else { /* old layout */
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strcpy(buf, filename); /* first copy the full string */
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if (lang) {
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/* insert the language and suffix if needed */
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const char *c = strrchr(filename, '/');
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int offset = c ? c - filename + 1 : 0; /* points right after the last '/' */
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snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
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}
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}
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return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
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}
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/*!
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/*!
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* \brief helper routine to locate a file with a given format
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* \brief helper routine to locate a file with a given format
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* and language preference.
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* and language preference.
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@ -470,57 +501,56 @@ static int fileexists_core(const char *filename, const char *fmt, const char *pr
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char *buf, int buflen)
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char *buf, int buflen)
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{
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{
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int res = -1;
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int res = -1;
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int langlen; /* length of language string */
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char *lang = NULL;
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const char *c = strrchr(filename, '/');
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int offset = c ? c - filename + 1 : 0; /* points right after the last '/' */
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if (preflang == NULL) {
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preflang = "";
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}
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langlen = strlen(preflang);
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if (buflen < langlen + strlen(filename) + 4) {
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ast_log(LOG_WARNING, "buffer too small, allocating larger buffer\n");
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buf = alloca(langlen + strlen(filename) + 4); /* room for everything */
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}
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if (buf == NULL) {
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if (buf == NULL) {
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return 0;
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return -1;
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}
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}
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for (;;) {
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if (is_absolute_path(filename)) {
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if (ast_language_is_prefix) { /* new layout */
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ast_copy_string(buf, filename, buflen);
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if (langlen) {
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return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
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strcpy(buf, preflang);
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buf[langlen] = '/';
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strcpy(buf + langlen + 1, filename);
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} else {
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strcpy(buf, "en/"); /* English - fallback if no file found in preferred language */
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strcpy(buf + 3, filename);
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}
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} else { /* old layout */
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strcpy(buf, filename); /* first copy the full string */
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if (langlen) {
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/* insert the language and suffix if needed */
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strcpy(buf + offset, preflang);
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sprintf(buf + offset + langlen, "/%s", filename + offset);
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}
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}
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res = ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
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if (res > 0) { /* found format */
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break;
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}
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if (langlen == 0) { /* no more formats */
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break;
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}
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if (preflang[langlen] == '_') { /* we are on the local suffix */
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langlen = 0; /* try again with no language */
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} else {
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langlen = (c = strchr(preflang, '_')) ? c - preflang : 0;
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}
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}
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}
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/* We try languages in the following order:
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* preflang (may include dialect)
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* lang (preflang without dialect - if any)
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* <none>
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* default (unless the same as preflang or lang without dialect)
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*/
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/* Try preferred language */
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if (!ast_strlen_zero(preflang)) {
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/* try the preflang exactly as it was requested */
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if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
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return res;
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return res;
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} else {
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/* try without a dialect */
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char *postfix = NULL;
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postfix = lang = ast_strdupa(preflang);
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strsep(&postfix, "_");
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if (postfix) {
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if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
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return res;
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}
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}
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}
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}
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/* Try without any language */
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if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
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return res;
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}
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/* Finally try the default language unless it was already tried before */
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if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
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if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
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return res;
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}
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}
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return 0;
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}
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}
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struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
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struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
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