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avformat/hls: Even stricter URL checks

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This fixes a null pointer dereference at least

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-01-15 15:29:22 +01:00
parent 6ba42b6482
commit cfda1bea4c
1 changed files with 5 additions and 1 deletions
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6
libavformat/hls.c
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@ -611,12 +611,16 @@ static int open_url(HLSContext *c, URLContext **uc, const char *url, AVDictionar
AVDictionary *tmp = NULL;
int ret;
const char *proto_name = avio_find_protocol_name(url);
if (!proto_name)
return AVERROR_INVALIDDATA;
// only http(s) & file are allowed
if (!av_strstart(proto_name, "http", NULL) && !av_strstart(proto_name, "file", NULL))
return AVERROR_INVALIDDATA;
if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
;
else if (strcmp(proto_name, "file") || !strcmp(url, "file,"))
else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
return AVERROR_INVALIDDATA;
av_dict_copy(&tmp, c->avio_opts, 0);