#
# 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:
#      http://www.opensips.org/Resources/DocsCookbooks
# for a explanation of possible statements, functions and parameters.
#


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

log_level=3
log_stderror=no
log_facility=LOG_LOCAL0

children=4

auto_aliases=no

listen=udp:enp0s3:5060
listen=udp:127.0.0.1:5080
listen=udp:127.0.0.1:5060
listen=udp:enp0s3:5080



####### 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"
/* do not append from tag to the RR (no need for this script) */
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", "/tmp/opensips_fifo")
modparam("mi_fifo", "fifo_mode", 0666)

#### URI module
# no need to load the module only to set varible to zero
# as default it's value is already 0
# https://opensips.org/html/docs/modules/3.0.x/uri.html#param_use_uri_table
#loadmodule "uri.so"
#modparam("uri", "use_uri_table", 0)

#### USeR LOCation module
loadmodule "usrloc.so"
modparam("usrloc", "nat_bflag", "NAT")
modparam("usrloc", "db_mode",   0)

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

#### ACCounting module
loadmodule "acc.so"
modparam("acc", "early_media", 0)
modparam("acc", "report_cancels", 0)
modparam("acc", "detect_direction", 0)

loadmodule "proto_udp.so"


#### CGRateS module
loadmodule "dialog.so"
loadmodule "cgrates.so"
modparam("cgrates", "cgrates_engine", "127.0.0.1:2014")


####### 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();

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

		exit;
	}

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

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

	# check auth with CGRateS
	$cgr_opt(GetMaxUsage) = 1; # also retrieve the max usage
	$cgr_opt(GetAttributes) = 1;
	$cgr_opt(GetSuppliers) = 1;
	$cgr_opt(AuthorizeResources) = 1;
	$cgr_opt(AllocateResources) = 1;
	$cgr_opt(ReleaseResources) = 1;
	$cgr_opt(ProcessThresholds) = 1;
	$cgr_opt(ProcessStatQueues) = 1;
	$cgr(RequestType) = "*prepaid";
	$cgr(OriginHost) = "127.0.0.1";
	$cgr(Source) = "OpenSIPS";
	
    if (!async(cgrates_auth("$fU", "$rU"), resume_cgr_auth)) {
        sl_send_reply(503, "Service Unavailable");
        exit;
    }
}

route [resume_cgr_auth] {
	if ($rc == 0) {
        xlog("Call not authorized: code=$cgrret!\n");
        send_reply(403, "Forbidden");
        exit;
    }
	$var(idx) = 0;
	while ($(cgr_ret(AttributesDigest){s.select,$var(idx),,}) != NULL) {
		$avp($(cgr_ret(AttributesDigest){s.select,$var(idx),,}{s.select,0,:}))
			= $(cgr_ret(AttributesDigest){s.select,$var(idx),,}{s.select,1,:});
		$var(idx) = $var(idx) + 1;
	}
    cgrates_acc("cdr|missed", "$fU", "$rU");
    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;
	}
}
