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osmo-sip-connector
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Support Emergency Calling 

LCR supports emergency calling by sending the string 'emergency' as callee to
the SIP side.

This does the same

Change-Id: I5d0adb61dfa82e7ded5f41d9bc773d546112c9f1
changes/82/12682/13
Keith Whyte 2019-01-22 15:56:58 +01:00 committed by Keith Whyte
parent e9113f21f6
commit c90829c395
1 changed files with 19 additions and 5 deletions
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24
src/mncc.c
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@ -409,10 +409,17 @@ static int continue_setup(struct mncc_connection *conn, const struct gsm_mncc *m
}
}
static const struct gsm_mncc_number emergency_number = {
.type = CALL_TYPE_MNCC,
.plan = GSM48_NPI_UNKNOWN,
.number = "emergency",
};
/* Check + Process MNCC_SETUP_IND (MO call) */
static void check_setup(struct mncc_connection *conn, const char *buf, int rc)
{
const struct gsm_mncc *data;
const struct gsm_mncc_number *called;
struct call *call;
struct mncc_call_leg *leg;
@ -423,14 +430,21 @@ static void check_setup(struct mncc_connection *conn, const char *buf, int rc)
}
data = (const struct gsm_mncc *) buf;
called = &data->called;
/* screen arguments */
if ((data->fields & MNCC_F_CALLED) == 0) {
LOGP(DMNCC, LOGL_ERROR,
"MNCC leg(%u) without called addr fields(%u)\n",
data->callref, data->fields);
return mncc_send(conn, MNCC_REJ_REQ, data->callref);
if (!data->emergency) {
LOGP(DMNCC, LOGL_ERROR,
"MNCC leg(%u) without called addr fields(%u)\n",
data->callref, data->fields);
return mncc_send(conn, MNCC_REJ_REQ, data->callref);
}
/* Emergency without a called number present. Use the standard "emergency" number. */
called = &emergency_number;
}
if ((data->fields & MNCC_F_CALLING) == 0) {
LOGP(DMNCC, LOGL_ERROR,
"MNCC leg(%u) without calling addr fields(%u)\n",
@ -461,7 +475,7 @@ static void check_setup(struct mncc_connection *conn, const char *buf, int rc)
leg->conn = conn;
leg->state = MNCC_CC_INITIAL;
leg->dir = MNCC_DIR_MO;
memcpy(&leg->called, &data->called, sizeof(leg->called));
memcpy(&leg->called, called, sizeof(leg->called));
memcpy(&leg->calling, &data->calling, sizeof(leg->calling));
memcpy(&leg->imsi, data->imsi, sizeof(leg->imsi));