# $Id: nat-rtpproxy.cfg 51 2006-01-31 13:28:04Z /CN=Paul Hazlett/emailAddress=paul@onsip.org $
debug=9
fork=no
log_stderror=yes

mhomed=yes
listen=10.44.9.18           # INSERT YOUR IP ADDRESS HERE
listen=10.177.107.124
port=5060
children=4

dns=no
rev_dns=no
fifo="/tmp/ser_fifo"
fifo_db_url="mysql://ser:heslo@localhost/ser"

loadmodule "/usr/lib/ser/modules/mysql.so"
loadmodule "/usr/lib/ser/modules/sl.so"
loadmodule "/usr/lib/ser/modules/tm.so"
loadmodule "/usr/lib/ser/modules/rr.so"
loadmodule "/usr/lib/ser/modules/maxfwd.so"
loadmodule "/usr/lib/ser/modules/usrloc.so"
loadmodule "/usr/lib/ser/modules/registrar.so"
loadmodule "/usr/lib/ser/modules/auth.so"
loadmodule "/usr/lib/ser/modules/auth_db.so"
loadmodule "/usr/lib/ser/modules/uri.so"
loadmodule "/usr/lib/ser/modules/uri_db.so"
loadmodule "/usr/lib/ser/modules/nathelper.so"
loadmodule "/usr/lib/ser/modules/textops.so"
loadmodule "/usr/lib/ser/modules/avpops.so"
loadmodule "/usr/lib/ser/modules/permissions.so"

modparam("auth_db|uri_db|usrloc", "db_url", "mysql://ser:heslo@localhost/ser")
modparam("auth_db", "calculate_ha1", 1)
modparam("auth_db", "password_column", "password")

modparam("nathelper", "natping_interval", 30) 
modparam("nathelper", "ping_nated_only", 1)   
modparam("nathelper", "rtpproxy_sock", "udp:10.44.9.17:12345")

modparam("usrloc", "db_mode", 2)

modparam("registrar", "nat_flag", 6)

modparam("rr", "enable_full_lr", 1)

modparam("tm", "fr_inv_timer", 27)
modparam("tm", "fr_inv_timer_avp", "inv_timeout")

modparam("permissions", "db_mode", 1)
modparam("permissions", "trusted_table", "trusted")

route {

	# -----------------------------------------------------------------
	# Sanity Check Section
	# -----------------------------------------------------------------
	if (!mf_process_maxfwd_header("10")) {
		sl_send_reply("483", "Too Many Hops");
		break;
	};

	if (msg:len > max_len) {
		sl_send_reply("513", "Message Overflow");
		break;
	};

	# -----------------------------------------------------------------
	# Record Route Section
	# -----------------------------------------------------------------
	if (method!="REGISTER") {
		record_route();
	};

	if (method=="BYE" || method=="CANCEL") {
		unforce_rtp_proxy();
	} 

	# -----------------------------------------------------------------
	# Loose Route Section
	# -----------------------------------------------------------------
	if (loose_route()) {

		if ((method=="INVITE" || method=="REFER") && !has_totag()) {
			sl_send_reply("403", "Forbidden");
			break;
		};

		if (method=="INVITE") {

			if (!proxy_authorize("","subscriber")) {
				proxy_challenge("","0");
				break;
			} else if (!check_from()) {
				sl_send_reply("403", "Use From=ID");
				break;
			};
			consume_credentials();

			if (nat_uac_test("19")) {
				setflag(6);
				force_rport();
				fix_nated_contact();
			};
			force_rtp_proxy("l");
		};
		route(1);
		break;
	};

	# -----------------------------------------------------------------
	# Call Type Processing Section
	# -----------------------------------------------------------------
	if (uri!=myself) {
		route(4);
		route(1);
		break;
	};

	if (method=="ACK") {
		route(1);
		break;
	} else if (method=="CANCEL") {
		route(1);
		break;
	} else if (method=="INVITE") {
		route(3);
		break;
	} else  if (method=="REGISTER") {
		route(2);
		break;
	};

	lookup("aliases");
	if (uri!=myself) {
		route(4);
		route(1);
		break;
	};

	if (!lookup("location")) {
		sl_send_reply("404", "User Not Found");
		break;
	};

	route(1);
}

route[1] {

	# -----------------------------------------------------------------
	# Default Message Handler
	# -----------------------------------------------------------------

	t_on_reply("1");

	if (!t_relay()) {
		if (method=="INVITE" && isflagset(6)) {
			unforce_rtp_proxy();
		};
		sl_reply_error();
	};
}

route[2] {

	# -----------------------------------------------------------------
	# REGISTER Message Handler
	# ----------------------------------------------------------------

	if (!search("^Contact:[ ]*\*") && nat_uac_test("19")) {
		setflag(6);
		fix_nated_register();
		force_rport();
	};

	sl_send_reply("100", "Trying");

	if (!www_authorize("","subscriber")) {
		www_challenge("","0");
		break;
	};

	if (!check_to()) {
		sl_send_reply("401", "Unauthorized");
		break;
	};

	consume_credentials();

	if (!save("location")) {
		sl_reply_error();
	};
}

route[3] {

	# -----------------------------------------------------------------
	# INVITE Message Handler
	# -----------------------------------------------------------------

	if (!proxy_authorize("","subscriber")) {
		proxy_challenge("","0");
		break;
	} else if (!check_from()) {
		sl_send_reply("403", "Use From=ID");
		break;
	};

	consume_credentials();

	if (nat_uac_test("19")) {
		setflag(6);
	}

	lookup("aliases");
	if (uri!=myself) {
		route(4);
		route(1);
		break;
	};
	
	if (uri=~"^sip:0217[0-9]*@") {
                route(4);
  		route(5);
                break;
         };
	if (!lookup("location")) {
		sl_send_reply("404", "User Not Found");
		break;
	};

	route(4);
	route(1);
}

route[4] {

	# -----------------------------------------------------------------
	# NAT Traversal Section
	# -----------------------------------------------------------------

	if (isflagset(6)) {
		force_rport();
		fix_nated_contact();
		force_rtp_proxy();
	}
}

route[5] {
 rewritehost("10.177.107.90");
 avp_write("i:45", "inv_timeout");
 route(1);
}
onreply_route[1] {

	if (isflagset(6) && status=~"(180)|(183)|2[0-9][0-9]") {
		if (!search("^Content-Length:[ ]*0")) {
			force_rtp_proxy();
		};
	};

	if (nat_uac_test("1")) {
		fix_nated_contact();
	};
}