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avformat/http: Fix leak when using deprecated option 

When the deprecated option "user-agent" was set to something different
than its default value, said option would always precede and overwrite
the ordinary user_agent option (regardless of whether it was explicitly
set) which leads to a leak of the user_agent option (which has a default
value, so the leak happens always).
Fix this by setting the same destination for both options; the last
option applied wins then.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2021-03-06 13:55:04 +01:00
parent 2570663966
commit 9665fd31e8
1 changed files with 1 additions and 10 deletions
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11
libavformat/http.c
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@ -78,9 +78,6 @@ typedef struct HTTPContext {
char *http_version;
char *user_agent;
char *referer;
#if FF_API_HTTP_USER_AGENT
char *user_agent_deprecated;
#endif
char *content_type;
/* Set if the server correctly handles Connection: close and will close
* the connection after feeding us the content. */
@ -145,7 +142,7 @@ static const AVOption options[] = {
{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
{ "referer", "override referer header", OFFSET(referer), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
#if FF_API_HTTP_USER_AGENT
{ "user-agent", "use the \"user_agent\" option instead", OFFSET(user_agent_deprecated), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D|AV_OPT_FLAG_DEPRECATED },
{ "user-agent", "use the \"user_agent\" option instead", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D|AV_OPT_FLAG_DEPRECATED },
#endif
{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E },
{ "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
@ -1321,12 +1318,6 @@ static int http_connect(URLContext *h, const char *path, const char *local_path,
}
}
#if FF_API_HTTP_USER_AGENT
if (strcmp(s->user_agent_deprecated, DEFAULT_USER_AGENT)) {
s->user_agent = av_strdup(s->user_agent_deprecated);
}
#endif
av_bprintf(&request, "%s ", method);
bprint_escaped_path(&request, path);
av_bprintf(&request, " HTTP/1.1\r\n");