In hold/retrieve/reinvite, add check that other_leg exists
We should always check that the other leg did not somehow dissapear before accessing it. Change-Id: I947aab6c0cc5019929bde1c7012e1a8c3d3472a5
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b43c296f19
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eb0a93e037
14
src/mncc.c
14
src/mncc.c
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@ -703,6 +703,12 @@ static void check_hold_ind(struct mncc_connection *conn, const char *buf, int rc
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LOGP(DMNCC, LOGL_DEBUG,
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"leg(%u) is requesting hold.\n", leg->callref);
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other_leg = call_leg_other(&leg->base);
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if (!other_leg) {
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LOGP(DMNCC, LOGL_ERROR, "leg(%u) other leg gone!\n",
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leg->callref);
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mncc_send(leg->conn, MNCC_HOLD_REJ, leg->callref);
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return;
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}
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other_leg->hold_call(other_leg);
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mncc_send(leg->conn, MNCC_HOLD_CNF, leg->callref);
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leg->state = MNCC_CC_HOLD;
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@ -721,6 +727,14 @@ static void check_retrieve_ind(struct mncc_connection *conn, const char *buf, in
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LOGP(DMNCC, LOGL_DEBUG,
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"leg(%u) is requesting unhold.\n", leg->callref);
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other_leg = call_leg_other(&leg->base);
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if (!other_leg) {
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/* The SIP leg went away while we were holding! */
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LOGP(DMNCC, LOGL_ERROR, "leg(%u) other leg gone!\n",
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leg->callref);
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mncc_send(leg->conn, MNCC_RETRIEVE_CNF, leg->callref);
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mncc_call_leg_release(&leg->base);
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return;
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}
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other_leg->retrieve_call(other_leg);
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mncc_send(leg->conn, MNCC_RETRIEVE_CNF, leg->callref);
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/* In case of call waiting/swap, At this point we need to tell the MSC to send
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17
src/sip.c
17
src/sip.c
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@ -193,6 +193,13 @@ static void sip_handle_reinvite(struct sip_call_leg *leg, nua_handle_t *nh, cons
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LOGP(DSIP, LOGL_INFO, "re-INVITE for call %s\n", sip->sip_call_id->i_id);
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struct call_leg *other = call_leg_other(&leg->base);
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if (!other) {
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LOGP(DMNCC, LOGL_ERROR, "leg(%p) other leg gone!\n", leg);
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sip_release_call(&leg->base);
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return;
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}
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if (!sdp_get_sdp_mode(sip, &mode)) {
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/* re-INVITE with no SDP.
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* We should respond with SDP reflecting current session
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@ -540,6 +547,11 @@ static void sip_hold_call(struct call_leg *_leg)
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OSMO_ASSERT(_leg->type == CALL_TYPE_SIP);
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leg = (struct sip_call_leg *) _leg;
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other_leg = call_leg_other(&leg->base);
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if (!other_leg) {
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LOGP(DMNCC, LOGL_ERROR, "leg(%p) other leg gone!\n", leg);
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sip_release_call(&leg->base);
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return;
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}
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char *sdp = sdp_create_file(leg, other_leg, sdp_sendonly);
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nua_invite(leg->nua_handle,
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NUTAG_MEDIA_ENABLE(0),
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@ -557,6 +569,11 @@ static void sip_retrieve_call(struct call_leg *_leg)
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OSMO_ASSERT(_leg->type == CALL_TYPE_SIP);
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leg = (struct sip_call_leg *) _leg;
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other_leg = call_leg_other(&leg->base);
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if (!other_leg) {
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LOGP(DMNCC, LOGL_ERROR, "leg(%p) other leg gone!\n", leg);
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sip_release_call(&leg->base);
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return;
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}
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char *sdp = sdp_create_file(leg, other_leg, sdp_sendrecv);
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nua_invite(leg->nua_handle,
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NUTAG_MEDIA_ENABLE(0),
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