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res_pjsip_sdp_rtp: Add NULL check in add_crypto_to_stream

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add_crypto_to_stream wasn't checking for a NULL
session->inv_session->neg before calling pjmedia_sdp_neg_get_state.
This was causing a crash if the negotiation hadn't already been
completed and asterisk was compiled with --enable-dev-mode.

Change-Id: I57c6229954a38145da9810fc18657bfcc4d9d0c9
This commit is contained in:
George Joseph
2017-12-14 13:05:23 -07:00
parent ec984870b0
commit 283d2df680
1 changed files with 2 additions and 1 deletions
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3
res/res_pjsip_sdp_rtp.c
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@@ -1253,7 +1253,8 @@ static int add_crypto_to_stream(struct ast_sip_session *session,
/* If this is an answer we need to use our current state, if it's an offer we need to use
* the configured value.
*/
if (pjmedia_sdp_neg_get_state(session->inv_session->neg) != PJMEDIA_SDP_NEG_STATE_DONE) {
if (session->inv_session->neg
&& pjmedia_sdp_neg_get_state(session->inv_session->neg) != PJMEDIA_SDP_NEG_STATE_DONE) {
setup = dtls->get_setup(session_media->rtp);
} else {
setup = session->endpoint->media.rtp.dtls_cfg.default_setup;