#
# OpenSIPS residential configuration script
#     by OpenSIPS Solutions <team@opensips-solutions.com>
#
# This script was generated via "make menuconfig", from
#   the "Residential" scenario.
# You can enable / disable more features / functionalities by
#   re-generating the scenario with different options.#
#
# Please refer to the Core CookBook at:
#      https://opensips.org/Resources/DocsCookbooks
# for a explanation of possible statements, functions and parameters.
#


####### Global Parameters #########

debug_mode=no
log_stdout=yes
log_level=3
xlog_level=3
stderror_enabled=no
syslog_enabled=yes
syslog_facility=LOG_LOCAL0

udp_workers=4

socket=udp:enp0s3:5060
socket=udp:127.0.0.1:5060

####### Modules Section ########

#set module path
mpath="/usr/lib/x86_64-linux-gnu/opensips/modules/"

#### SIGNALING module
loadmodule "signaling.so"

#### StateLess module
loadmodule "sl.so"

#### Transaction Module
loadmodule "tm.so"
modparam("tm", "fr_timeout", 5)
modparam("tm", "fr_inv_timeout", 30)
modparam("tm", "restart_fr_on_each_reply", 0)
modparam("tm", "onreply_avp_mode", 1)

#### Record Route Module
loadmodule "rr.so"
modparam("rr", "append_fromtag", 0)

#### MAX ForWarD module
loadmodule "maxfwd.so"

#### SIP MSG OPerationS module
loadmodule "sipmsgops.so"

#### FIFO Management Interface
loadmodule "mi_fifo.so"
modparam("mi_fifo", "fifo_name", "/run/opensips/opensips_fifo")
modparam("mi_fifo", "fifo_mode", 0666)

#### USeR LOCation module
loadmodule "usrloc.so"
modparam("usrloc", "nat_bflag", "NAT")
modparam("usrloc", "working_mode_preset", "single-instance-no-db")

#### REGISTRAR module
loadmodule "registrar.so"
modparam("registrar", "tcp_persistent_flag", "TCP_PERSISTENT")

loadmodule "proto_udp.so"

#### Dialog module
loadmodule "dialog.so"

#### Exec module
loadmodule "exec.so"


#### Diameter module
loadmodule "aaa_diameter.so"
modparam("aaa_diameter", "fd_log_level", 0)
modparam("aaa_diameter", "realm", "diameter.test")
modparam("aaa_diameter", "peer_identity", "server")
modparam("aaa_diameter", "aaa_url", "diameter:/etc/freeDiameter/freeDiameter.conf;extra-avps-file:/etc/opensips/dictionary.opensips")

####### Routing Logic ########

# main request routing logic

route{

	if (!mf_process_maxfwd_header(10)) {
		send_reply(483,"Too Many Hops");
		exit;
	}

	if (has_totag()) {

		# handle hop-by-hop ACK (no routing required)
		if ( is_method("ACK") && t_check_trans() ) {
			t_relay();
			exit;
		}

		# sequential request within a dialog should
		# take the path determined by record-routing
		if ( !loose_route() ) {
			# we do record-routing for all our traffic, so we should not
			# receive any sequential requests without Route hdr.
			send_reply(404,"Not here");
			exit;
		}

		# if (is_method("BYE")) {
		# 	# do accounting even if the transaction fails
		# 	do_accounting("log","failed");
		# }

		# route it out to whatever destination was set by loose_route()
		# in $du (destination URI).
		route(relay);
		exit;
	}

	# CANCEL processing
	if (is_method("CANCEL")) {
		if (t_check_trans())
			t_relay();
		exit;
	}

	# absorb retransmissions, but do not create transaction
	t_check_trans();

	if ( !(is_method("REGISTER")  ) ) {
		
		if (is_myself("$fd")) {
					
		} else {
			# if caller is not local, then called number must be local
			
			if (!is_myself("$rd")) {
				send_reply(403,"Relay Forbidden");
				exit;
			}
		}

	}

	# preloaded route checking
	if (loose_route()) {
		xlog("L_ERR",
			"Attempt to route with preloaded Route's [$fu/$tu/$ru/$ci]");
		if (!is_method("ACK"))
			send_reply(403,"Preload Route denied");
		exit;
	}

	# record routing
	if (!is_method("REGISTER|MESSAGE"))
		record_route();

	# account only INVITEs
	if (is_method("INVITE")) {
		
		create_dialog();
		$dlg_val(callid) = $ci;
		$dlg_val(originhost) = $(ou{uri.host});
		$dlg_val(originrealm) = $fd;
		$dlg_val(setuptime) = $Ts;
		$dlg_val(account) = $fU;
		$dlg_val(destination) = $rU;

		# we need an answer handler to record answertime for cdr processing
		dlg_on_answer("handle_answer");

		# would probably be a good idea to have a timeout handler also
		dlg_on_hangup("handle_hangup");
	}

	if (!is_myself("$rd")) {
		append_hf("P-hint: outbound\r\n"); 
		
		route(relay);
	}

	# requests for my domain
	
	if (is_method("PUBLISH|SUBSCRIBE")) {
		send_reply(503, "Service Unavailable");
		exit;
	}

	if (is_method("REGISTER")) {
		# store the registration and generate a SIP reply
		if (!save("location"))
			xlog("failed to register AoR $tu\n");

		exit;
	}

	if ($rU==NULL) {
		# request with no Username in RURI
		send_reply(484,"Address Incomplete");
		exit;
	}

	# do lookup with method filtering
	if (!lookup("location","method-filtering")) {
		t_reply(404, "Not Found");
		exit;
	}

	route(relay);
}

route[handle_answer] {
	$dlg_val(answertime) = $Ts;
	xlog("$$dlg_val(answertime) 1 = $dlg_val(answertime)\n");
}

route[handle_hangup] {
	$var(duration) = $Ts - $dlg_val(answertime);
	exec("/usr/local/bin/unix2ntp", "$dlg_val(answertime)", $var(answertime32bit), , );
	$var(payload) = "[
		{ \"Session-Id\": \"" + $dlg_val(callid) + "\" },
		{ \"Origin-Host\": \"client.diameter.test\" },
		{ \"Origin-Realm\": \"diameter.test\" },
		{ \"Destination-Realm\": \"diameter.test\" },
		{ \"Service-Context-Id\": \"voice@OsipsDiamCCR\" },
		{ \"CC-Request-Type\": 4 },
		{ \"CC-Request-Number\": 0 },
		{ \"Termination-Cause\": 1 },
		{ \"Event-Timestamp\": \"" + $var(answertime32bit) + "\" },
		{ \"User-Name\": \"" + $dlg_val(account) + "\" },
		{ \"Subscription-Id\": [
        	{ \"Subscription-Id-Type\": 0 },  
        	{ \"Subscription-Id-Data\": \"" + $dlg_val(account) + "\" }
    	]},
		{ \"Requested-Service-Unit\": [
			{\"CC-Time\": 0}
		]},
		{ \"Used-Service-Unit\": [
			{\"CC-Time\": " + $var(duration) + " }
		]},
		{ \"Service-Information\": [
			{\"IMS-Information\": [
				{ \"Calling-Party-Address\": \"" + $dlg_val(account) + "\"  },
				{ \"Called-Party-Address\": \"" + $dlg_val(destination) + "\"  }
			]}
		]}
	]";

	dm_send_request(4, 272, $var(payload), $var(rpl_avps));
	if ($rc < 1) {
		xlog("error processing diameter request (returned $rc), received reply: $var(rpl_avps)");
		exit;
	}
	route(relay);
}


route[relay] {
	# for INVITEs enable some additional helper routes
	if (is_method("INVITE")) {
		t_on_branch("per_branch_ops");
		t_on_reply("handle_nat");
		t_on_failure("missed_call");
	}

	if (!t_relay()) {
		send_reply(500,"Internal Error");
	}
	exit;
}




branch_route[per_branch_ops] {
	xlog("new branch at $ru\n");
}


onreply_route[handle_nat] {
	xlog("incoming reply\n");
}


failure_route[missed_call] {
	if (t_was_cancelled()) {
		exit;
	}

	# uncomment the following lines if you want to block client 
	# redirect based on 3xx replies.
	##if (t_check_status("3[0-9][0-9]")) {
	##t_reply(404,"Not found");
	##	exit;
	##}

	
}



