- }
- return 0;
- } else if (*spec == '#' ||
- (*spec == 'i' && *(spec + 1) == ':')) {
- int stream_id;
- char *endptr;
- spec += 1 + (*spec == 'i');
- stream_id = strtol(spec, &endptr, 0);
- if (!*endptr)
- return stream_id == st->id;
- } else if (*spec == 'm' && *(spec + 1) == ':') {
- AVDictionaryEntry *tag;
- char *key, *val;
- int ret;
-
- spec += 2;
- val = strchr(spec, ':');
-
- key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
- if (!key)
- return AVERROR(ENOMEM);
-
- tag = av_dict_get(st->metadata, key, NULL, 0);
- if (tag) {
- if (!val || !strcmp(tag->value, val + 1))
- ret = 1;
- else
- ret = 0;
- } else
- ret = 0;
-
- av_freep(&key);
- return ret;
- } else if (*spec == 'u') {
- AVCodecParameters *par = st->codecpar;
+ if (!found)
+ match = 0;
+ } else if (*spec == '#' ||
+ (*spec == 'i' && *(spec + 1) == ':')) {
+ int stream_id;
+ char *endptr;
+ spec += 1 + (*spec == 'i');
+ stream_id = strtol(spec, &endptr, 0);
+ if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
+ return AVERROR(EINVAL);
+ return match && (stream_id == st->id);
+ } else if (*spec == 'm' && *(spec + 1) == ':') {
+ AVDictionaryEntry *tag;
+ char *key, *val;
+ int ret;
+
+ if (match) {
+ spec += 2;
+ val = strchr(spec, ':');
+
+ key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
+ if (!key)
+ return AVERROR(ENOMEM);
+
+ tag = av_dict_get(st->metadata, key, NULL, 0);
+ if (tag) {
+ if (!val || !strcmp(tag->value, val + 1))
+ ret = 1;
+ else
+ ret = 0;
+ } else
+ ret = 0;
+
+ av_freep(&key);
+ }
+ return match && ret;
+ } else if (*spec == 'u' && *(spec + 1) == '\0') {
+ AVCodecParameters *par = st->codecpar;