From 008915ee41900c34ec0fd8df0c9f1d7c2cbdb3b2 Mon Sep 17 00:00:00 2001 From: Keith Date: Fri, 31 Aug 2018 15:44:30 +0200 Subject: [PATCH] Implement Cause Mapping Adds cause field to the call_leg and sip_call_leg structs. Translates the SIP status to MNCC cause and vice versa and uses this information in the SIP/MNCC messages at call leg release time. Change-Id: Ic1b80dff7e583cd6fff2b662bc6cc4bad3f81cd4 --- src/call.h | 4 ++++ src/mncc.c | 8 ++++++++ src/sip.c | 15 +++++++++++++-- 3 files changed, 25 insertions(+), 2 deletions(-) diff --git a/src/call.h b/src/call.h index 5a11f6c..de92a24 100644 --- a/src/call.h +++ b/src/call.h @@ -43,6 +43,8 @@ struct call_leg { struct call *call; bool in_release; + /* Field to hold GSM 04.08 Cause Value. Section 10.5.4.11 Table 10.86 */ + int cause; /** * RTP data @@ -130,6 +132,8 @@ struct mncc_call_leg { int rsp_wanted; struct mncc_connection *conn; + /* Field to hold GSM 04.08 Cause Value. Section 10.5.4.11 Table 10.86 */ + int cause; }; extern struct llist_head g_call_list; diff --git a/src/mncc.c b/src/mncc.c index 2ecf8d0..f41bb51 100644 --- a/src/mncc.c +++ b/src/mncc.c @@ -105,12 +105,16 @@ static struct mncc_call_leg *mncc_find_leg(uint32_t callref) static void mncc_fill_header(struct gsm_mncc *mncc, uint32_t msg_type, uint32_t callref) { + struct mncc_call_leg *mncc_leg; + mncc->msg_type = msg_type; mncc->callref = callref; if (MNCC_DISC_REQ == msg_type || MNCC_REL_REQ == msg_type) { + mncc_leg = mncc_find_leg(callref); mncc->fields |= MNCC_F_CAUSE; mncc->cause.coding = GSM48_CAUSE_CODING_GSM; mncc->cause.location = GSM48_CAUSE_LOC_PUN_S_LU; + mncc->cause.value = mncc_leg->base.cause; } } @@ -511,6 +515,7 @@ static void check_disc_ind(struct mncc_connection *conn, const char *buf, int rc other_leg = call_leg_other(&leg->base); if (other_leg) + other_leg->cause = data->cause.value; other_leg->release_call(other_leg); } @@ -529,6 +534,7 @@ static void check_rel_ind(struct mncc_connection *conn, const char *buf, int rc) struct call_leg *other_leg; other_leg = call_leg_other(&leg->base); if (other_leg) + other_leg->cause = data->cause.value; other_leg->release_call(other_leg); } LOGP(DMNCC, LOGL_DEBUG, "leg(%u) was released.\n", data->callref); @@ -573,8 +579,10 @@ static void check_rej_ind(struct mncc_connection *conn, const char *buf, int rc) if (!leg) return; + leg->cause = data->cause.value; other_leg = call_leg_other(&leg->base); if (other_leg) + other_leg->cause = data->cause.value; other_leg->release_call(other_leg); LOGP(DMNCC, LOGL_DEBUG, "leg(%u) was rejected.\n", data->callref); mncc_leg_release(leg); diff --git a/src/sip.c b/src/sip.c index 07d2286..088dbc3 100644 --- a/src/sip.c +++ b/src/sip.c @@ -244,8 +244,10 @@ void nua_callback(nua_event_t event, int status, char const *phrase, nua_t *nua, nua_handle_destroy(leg->nua_handle); call_leg_release(&leg->base); - if (other) + if (other) { + other->cause = status2cause(status); other->release_call(other); + } } } else if (event == nua_r_bye || event == nua_r_cancel) { /* our bye or hang up is answered */ @@ -309,6 +311,10 @@ static void cause2status(int cause, int *sip_status, const char **sip_phrase, co static void sip_release_call(struct call_leg *_leg) { struct sip_call_leg *leg; + char reason[64]; + int sip_cause; + const char *sip_phrase; + const char *reason_text; OSMO_ASSERT(_leg->type == CALL_TYPE_SIP); leg = (struct sip_call_leg *) _leg; @@ -319,6 +325,10 @@ static void sip_release_call(struct call_leg *_leg) * and for a connected one bye. I don't see how sofia-sip is going * to help us here. */ + + cause2status(_leg->cause, &sip_cause, &sip_phrase, &reason_text); + snprintf(reason, sizeof reason, "Q.850;cause=%u;text=\"%s\"", _leg->cause, reason_text); + switch (leg->state) { case SIP_CC_INITIAL: LOGP(DSIP, LOGL_NOTICE, "Canceling leg(%p) in int state\n", leg); @@ -330,7 +340,8 @@ static void sip_release_call(struct call_leg *_leg) if (leg->dir == SIP_DIR_MT) nua_cancel(leg->nua_handle, TAG_END()); else { - nua_respond(leg->nua_handle, SIP_486_BUSY_HERE, + nua_respond(leg->nua_handle, sip_cause, sip_phrase, + SIPTAG_REASON_STR(reason), TAG_END()); nua_handle_destroy(leg->nua_handle); call_leg_release(&leg->base);