File ffmpeg-4-CVE-2023-6601-shim02-954d16fa.patch of Package A_tw-ffmpeg-4

From 954d16fa3f09a04c7917a1c69a5c3e283554cb1d Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Mon, 15 May 2023 00:56:10 +0200
Subject: [PATCH] avformat/hls: Try to implement RFC8216 playlist refusal

This should fix the regression since 6b1f68ccb04d791f0250e05687c346a99ff47ea1

Should fix Ticket10353 (please test and report cases that still fail)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/hls.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/libavformat/hls.c b/libavformat/hls.c
index 11e345b280..425df3b26b 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -2534,7 +2534,16 @@ static int hls_probe(const AVProbeData *p)
         strstr(p->buf, "#EXT-X-TARGETDURATION:") ||
         strstr(p->buf, "#EXT-X-MEDIA-SEQUENCE:")) {
 
-        if (!av_match_ext(p->filename, "m3u8,hls,m3u")) {
+        int mime_ok = p->mime_type && !(
+            av_strcasecmp(p->mime_type, "application/vnd.apple.mpegurl") &&
+            av_strcasecmp(p->mime_type, "audio/mpegurl") &&
+            av_strcasecmp(p->mime_type, "audio/x-mpegurl") &&
+            av_strcasecmp(p->mime_type, "application/x-mpegurl")
+            );
+
+        if (!av_match_ext    (p->filename, "m3u8,hls,m3u") &&
+             ff_match_url_ext(p->filename, "m3u8,hls,m3u") <= 0 &&
+            !mime_ok) {
             av_log(NULL, AV_LOG_ERROR, "Not detecting m3u8/hls with non standard extension\n");
             return 0;
         }
-- 
2.52.0