mirror/mpv
0
0
Fork 0
mirror of https://github.com/mpv-player/mpv.git synced 2024-09-20 03:52:22 +02:00
Code

demux/demux_lavf: avoid leaking AVFormatContext during demux_open_lavf

Browse Source 
If demux_open_lavf fails between calling avformat_alloc_context() and
assigning the context to priv->avfc, it will never be properly freed.

Fixes #11793.
This commit is contained in:
Leo Izen 2023-06-17 12:42:54 -04:00
parent 650c53df50
commit ee155d79fd
1 changed files with 18 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
demux/demux_lavf.c
View File

@ -969,10 +969,12 @@ static void nested_io_close(struct AVFormatContext *s, AVIOContext *pb)
static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
{
AVFormatContext *avfc;
AVFormatContext *avfc = NULL;
AVDictionaryEntry *t = NULL;
float analyze_duration = 0;
lavf_priv_t *priv = talloc_zero(NULL, lavf_priv_t);
AVDictionary *dopts = NULL;
demuxer->priv = priv;
priv->stream = demuxer->stream;
@ -986,11 +988,11 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
&priv->mf_fps);
if (lavf_check_file(demuxer, check) < 0)
return -1;
goto fail;
avfc = avformat_alloc_context();
if (!avfc)
return -1;
goto fail;
if (index_mode != 1)
avfc->flags |= AVFMT_FLAG_IGNIDX;
@ -1012,8 +1014,6 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
"analyzeduration to %f\n", analyze_duration);
}
AVDictionary *dopts = NULL;
if ((priv->avif_flags & AVFMT_NOFILE) || priv->format_hack.no_stream) {
mp_setup_av_network_options(&dopts, priv->avif->name,
demuxer->global, demuxer->log);
@ -1022,12 +1022,12 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
} else {
void *buffer = av_malloc(lavfdopts->buffersize);
if (!buffer)
return -1;
goto fail;
priv->pb = avio_alloc_context(buffer, lavfdopts->buffersize, 0,
demuxer, mp_read, NULL, mp_seek);
if (!priv->pb) {
av_free(buffer);
return -1;
goto fail;
}
priv->pb->read_seek = mp_read_seek;
priv->pb->seekable = demuxer->seekable ? AVIO_SEEKABLE_NORMAL : 0;
@ -1077,8 +1077,8 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
mp_set_avdict(&dopts, lavfdopts->avopts);
if (av_dict_copy(&priv->av_opts, dopts, 0) < 0) {
av_dict_free(&dopts);
return -1;
MP_ERR(demuxer, "av_dict_copy() failed\n");
goto fail;
}
if (priv->format_hack.readall_on_no_streamseek && priv->pb &&
@ -1097,8 +1097,7 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
if (avformat_open_input(&avfc, priv->filename, priv->avif, &dopts) < 0) {
MP_ERR(demuxer, "avformat_open_input() failed\n");
av_dict_free(&dopts);
return -1;
goto fail;
}
mp_avdict_print_unset(demuxer->log, MSGL_V, dopts);
@ -1116,7 +1115,7 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
if (probeinfo) {
if (avformat_find_stream_info(avfc, NULL) < 0) {
MP_ERR(demuxer, "av_find_stream_info() failed\n");
return -1;
goto fail;
}
MP_VERBOSE(demuxer, "avformat_find_stream_info() finished after %"PRId64
@ -1196,6 +1195,13 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
}
return 0;
fail:
if (!priv->avfc)
avformat_free_context(avfc);
av_dict_free(&dopts);
return -1;
}
static bool demux_lavf_read_packet(struct demuxer *demux,