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matroskadec: skip invalid tags with no TagName

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fixes segfault in issue 2328

Originally committed as revision 25659 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Anton Khirnov 2010-11-03 06:29:04 +00:00
parent 61b1f0f909
commit bf800c7db8
1 changed files with 5 additions and 0 deletions
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5
libavformat/matroskadec.c
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@ -1033,6 +1033,11 @@ static void matroska_convert_tag(AVFormatContext *s, EbmlList *list,
for (i=0; i < list->nb_elem; i++) {
const char *lang = strcmp(tags[i].lang, "und") ? tags[i].lang : NULL;
if (!tags[i].name) {
av_log(s, AV_LOG_WARNING, "Skipping invalid tag with no TagName.\n");
continue;
}
if (prefix) snprintf(key, sizeof(key), "%s/%s", prefix, tags[i].name);
else av_strlcpy(key, tags[i].name, sizeof(key));
if (tags[i].def || !lang) {