[FFmpeg-devel] [PATCH 1/2] avformat/url: check double dot is not directory

Steven Liu lq at chinaffmpeg.org
Fri Jul 24 17:21:36 EEST 2020


fix ticket: 8814
if get double dot in the url, check next byte by double dot,
it there have no '/', it is not directory double dot

Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
---
 libavformat/url.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/url.c b/libavformat/url.c
index 20463a6674..92cb4ea116 100644
--- a/libavformat/url.c
+++ b/libavformat/url.c
@@ -97,6 +97,10 @@ static void trim_double_dot_url(char *buf, const char *rel, int size)
     /* set new current position if the root node is changed */
     p = root;
     while (p && (node = strstr(p, ".."))) {
+        if (node[2] != '/') {
+            av_strlcpy(buf, rel, size);;
+            return;
+        }
         av_strlcat(tmp_path, p, node - p + strlen(tmp_path));
         p = node + 3;
         sep = strrchr(tmp_path, '/');
-- 
2.25.0





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