diff options
| author | Kevin Harwell <kharwell@digium.com> | 2018-01-03 10:41:46 -0600 |
|---|---|---|
| committer | Kevin Harwell <kharwell@digium.com> | 2018-01-03 10:41:46 -0600 |
| commit | d25a9bc7d32cc6e0b5c91f82bcb1e474adf1991c (patch) | |
| tree | f0f4a6bdbdba6813d166658ff02809877c7e3df5 | |
| parent | 9e47e113e14a6e017b80417698812af16361e092 (diff) | |
res_pjsip_session: Check if sequence header is missing
The pjsip_msg_find_hdr function can return NULL. This patch adds a check
when searching for the sequence header to make sure a NULL pointer is never
de-referenced.
Change-Id: I19af23aeeded65be016be92360e8cb7ffe51fad2
| -rw-r--r-- | res/res_pjsip_session.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/res/res_pjsip_session.c b/res/res_pjsip_session.c index ae5f19a03..b4fe0be77 100644 --- a/res/res_pjsip_session.c +++ b/res/res_pjsip_session.c @@ -2508,6 +2508,12 @@ static void handle_outgoing_response(struct ast_sip_session *session, pjsip_tx_d struct ast_sip_session_supplement *supplement; struct pjsip_status_line status = tdata->msg->line.status; pjsip_cseq_hdr *cseq = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_CSEQ, NULL); + + if (!cseq) { + ast_log(LOG_ERROR, "Cannot send response due to missing sequence header"); + return; + } + ast_debug(3, "Method is %.*s, Response is %d %.*s\n", (int) pj_strlen(&cseq->method.name), pj_strbuf(&cseq->method.name), status.code, (int) pj_strlen(&status.reason), pj_strbuf(&status.reason)); |