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avformat/webm_chunk: Check header filename length

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3b5b977c9f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-05-02 20:45:14 +02:00
parent 0ecde06ee7
commit abb7d3f1d0
1 changed files with 6 additions and 1 deletions
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7
libavformat/webm_chunk.c
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@ -92,11 +92,16 @@ static int get_chunk_filename(AVFormatContext *s, int is_header, char *filename)
return AVERROR(EINVAL);
}
if (is_header) {
int len;
if (!wc->header_filename) {
av_log(oc, AV_LOG_ERROR, "No header filename provided\n");
return AVERROR(EINVAL);
}
av_strlcpy(filename, wc->header_filename, MAX_FILENAME_SIZE);
len = av_strlcpy(filename, wc->header_filename, MAX_FILENAME_SIZE);
if (len >= MAX_FILENAME_SIZE) {
av_log(oc, AV_LOG_ERROR, "Header filename too long\n");
return AVERROR(EINVAL);
}
} else {
if (av_get_frame_filename(filename, MAX_FILENAME_SIZE,
s->filename, wc->chunk_index - 1) < 0) {