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authorMichael Niedermayer <michaelni@gmx.at>2014-09-30 23:24:52 +0200
committerMichael Niedermayer <michaelni@gmx.at>2014-10-19 04:36:52 +0200
commit5c8eb16769e581f828ce420373c558c190185cc1 (patch)
tree538dc04189f8313b8e2375280274532e0a80c45d /libavcodec/utils.c
parente23af4662dc667cdb6b7cd297f8cc0160a63e9bf (diff)
downloadffmpeg-5c8eb16769e581f828ce420373c558c190185cc1.tar.gz
avcodec: add codec_whitelist
This allows restricting decoders to a list of needed ones for improved security Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/utils.c')
-rw-r--r--libavcodec/utils.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 93be575d27..36ba118e7f 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -1385,6 +1385,12 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;
+ if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "Codec not on whitelist\n");
+ ret = AVERROR(EINVAL);
+ goto free_and_end;
+ }
+
// only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {