diff options
Diffstat (limited to 'channels/chan_sip.c')
| -rw-r--r-- | channels/chan_sip.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/channels/chan_sip.c b/channels/chan_sip.c index 113fe9518..cf8a78e94 100644 --- a/channels/chan_sip.c +++ b/channels/chan_sip.c @@ -4856,6 +4856,7 @@ static void parse_request(struct sip_request *req) static int find_sdp(struct sip_request *req) { const char *content_type; + const char *content_length; const char *search; char *boundary; unsigned int x; @@ -4863,6 +4864,20 @@ static int find_sdp(struct sip_request *req) int found_application_sdp = FALSE; int found_end_of_headers = FALSE; + content_length = get_header(req, "Content-Length"); + + if (!ast_strlen_zero(content_length)) { + if (sscanf(content_length, "%ud", &x) != 1) { + ast_log(LOG_WARNING, "Invalid Content-Length: %s\n", content_length); + return 0; + } + + /* Content-Length of zero means there can't possibly be an + SDP here, even if the Content-Type says there is */ + if (x == 0) + return 0; + } + content_type = get_header(req, "Content-Type"); /* if the body contains only SDP, this is easy */ |