/*
 * In this module we implement functions that send MNCC messages
 * to OsmoMSC via themwi-mncc, to be called by SIP and TMGW events.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <syslog.h>
#include "../include/mncc.h"
#include "../include/gsm48_const.h"
#include "../include/out_routes.h"
#include "call.h"

void
mncc_signal_alerting(call)
	struct call *call;
{
	struct gsm_mncc msg;

	if (call->mncc_state == MNCC_STATE_ALERTING)
		return;
	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_ALERT_REQ;
	msg.callref = call->mncc_callref;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
	call->mncc_state = MNCC_STATE_ALERTING;
}

void
mncc_signal_ibt_ring(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	if (call->overall_state == OVERALL_STATE_RINGING &&
	    call->mncc_state != MNCC_STATE_ALERTING) {
		msg.msg_type = MNCC_ALERT_REQ;
		call->mncc_state = MNCC_STATE_ALERTING;
	} else
		msg.msg_type = MNCC_PROGRESS_REQ;
	msg.callref = call->mncc_callref;
	msg.fields |= MNCC_F_PROGRESS;
	msg.progress.coding = GSM48_CAUSE_CODING_GSM;
	msg.progress.location = GSM48_CAUSE_LOC_NET_BEYOND;
	msg.progress.descr = GSM48_PROGR_IN_BAND_AVAIL;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
}

void
mncc_signal_answer_sup(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_SETUP_RSP;
	msg.callref = call->mncc_callref;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
	call->mncc_state = MNCC_STATE_CONNECTED;
}

void
mncc_dtmf_start_ok(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_START_DTMF_RSP;
	msg.callref = call->mncc_callref;
	msg.fields |= MNCC_F_KEYPAD;
	msg.keypad = call->dtmf_digit;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
}

void
mncc_dtmf_start_err(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_START_DTMF_REJ;
	msg.callref = call->mncc_callref;
	mncc_set_cause(&msg, GSM48_CAUSE_LOC_PRN_S_LU,
			GSM48_CC_CAUSE_PROTO_ERR);
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
}

void
mncc_dtmf_stop_ok(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_STOP_DTMF_RSP;
	msg.callref = call->mncc_callref;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
}

void
mncc_send_hold_ack(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_HOLD_CNF;
	msg.callref = call->mncc_callref;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
}

void
mncc_send_retrieve_ack(call)
	struct call *call;
{
	struct gsm_mncc msg;

	bzero(&msg, sizeof(struct gsm_mncc));
	msg.msg_type = MNCC_RETRIEVE_CNF;
	msg.callref = call->mncc_callref;
	send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
}

void
send_rtp_connect(call)
	struct call *call;
{
	struct gsm_mncc_rtp rtp;

	bzero(&rtp, sizeof(struct gsm_mncc_rtp));
	rtp.msg_type = MNCC_RTP_CONNECT;
	rtp.callref = call->mncc_callref;
	bcopy(&call->gsm_rtp_tmgw, &rtp.addr, sizeof(struct sockaddr_storage));
	send_mncc_to_sock(call->mncc, &rtp, sizeof(struct gsm_mncc_rtp));
}