pfSense

<?php

/*

 * config.console.inc

 *

 * part of pfSense (https://www.pfsense.org)

 * Copyright (c) 2004-2013 BSD Perimeter

 * Copyright (c) 2013-2016 Electric Sheep Fencing

 * Copyright (c) 2014-2025 Rubicon Communications, LLC (Netgate)

 * All rights reserved.

 *

 * originally part of m0n0wall (http://m0n0.ch/wall)

 * Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.

 * All rights reserved.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

require_once("config.inc");

require_once("globals.inc");

require_once("interfaces.inc");

require_once("util.inc");

/*

 * returns:

 * -2: error

 * -1: no interface found

 *  0: interface(s) assigned

 *  1: user quit

 */

function set_networking_interfaces_ports() {

	global $g;

	global $fp;

	$fp = fopen('php://stdin', 'r');

	$memory = get_memory();

	$physmem = $memory[0];

	$realmem = $memory[1];

	if ($physmem < g_get('minimum_ram_warning')) {

		echo "\n\n\n";

		echo gettext("DANGER!  WARNING!  ACHTUNG!") . "\n\n";

		printf(gettext('%1$s requires *AT LEAST* %2$s RAM to function correctly.%3$s'), g_get('product_label'), g_get('minimum_ram_warning_text'), "\n");

		printf(gettext('Only (%1$s) MB RAM has been detected, with (%2$s) available to %3$s.%4$s'), $realmem, $physmem, g_get('product_label'), "\n");

		echo "\n" . gettext("Press ENTER to continue.") . " ";

		fgets($fp);

		echo "\n";

	}

	$iflist = get_interface_list('active', 'physical', true);

	/* Function flow is based on $key or the lack thereof */

	$key = null;

	echo <<<EOD

Valid interfaces are:

EOD;

	if (!is_array($iflist)) {

		echo gettext("No interfaces found!") . "\n";

		return (-1);

	} else {

		// ifsmallist is kept with spaces at the beginning and end to assist with str_replace() operations

		$ifsmallist = " ";

		foreach ($iflist as $iface => $ifa) {

			$friendly = convert_real_interface_to_friendly_interface_name($iface);

			$ifstatus = (!empty($friendly)) ? get_interface_addresses(config_get_path("interfaces/{$friendly}/if", "")) : null;

			if (isset($ifstatus) && $ifstatus['linkstateup'])

				$status = "  (up)";

			else

				$status = "(down)";

			$ifsmallist = $ifsmallist . $iface. " ";

			echo sprintf("%-7s %s %s %s\n", $iface, $ifa['mac'],

				$status, substr($ifa['dmesg'], 0, 46));

		}

	}

	echo "\n" . gettext("Do VLANs need to be set up first?");

	echo "\n" .

		gettext(

			"If VLANs will not be used, or only for optional interfaces, it is typical to\n" .

			"say no here and use the webConfigurator to configure VLANs later, if required.") .

		"\n";

	echo "\n" . gettext("Should VLANs be set up now [y|n]?") . " ";

	$key = chop(fgets($fp));

	//Manually assign interfaces

	if (in_array($key, array('y', 'Y'))) {

		vlan_setup();

	}

	$vlans = config_get_path('vlans/vlan', []);

	if (is_array($vlans) && count($vlans)) {

		echo "\n\n" . gettext("VLAN interfaces:") . "\n\n";

		foreach ($vlans as $vlan) {

			echo sprintf("% -16s%s\n", vlan_interface($vlan),

				"VLAN tag {$vlan['tag']}, parent interface {$vlan['if']}");

			$iflist[vlan_interface($vlan)] = array();

			$ifsmallist = $ifsmallist . vlan_interface($vlan) . " ";

		}

	}

	echo <<<EOD

If the names of the interfaces are not known, auto-detection can

be used instead. To use auto-detection, please disconnect all

interfaces before pressing 'a' to begin the process.

EOD;

	do {

		echo "\n" . gettext("Enter the WAN interface name or 'a' for auto-detection") . " ";

		printf(gettext('%1$s(%2$s or a): '), "\n", trim($ifsmallist));

		$wanif = chop(fgets($fp));

		if ($wanif === "") {

			return (1);

		}

		if ($wanif === "a") {

			$wanif = autodetect_interface("WAN", $fp);

		} else if (!array_key_exists($wanif, $iflist)) {

			printf(gettext('%1$sInvalid interface name \'%2$s\'%3$s'), "\n", $wanif, "\n");

			unset($wanif);

			continue;

		}

		$ifsmallist = str_replace(" " . $wanif . " ", " ", $ifsmallist);

	} while (!$wanif);

	do {

		printf(gettext('%1$sEnter the LAN interface name or \'a\' for auto-detection %2$s' .

			'NOTE: this enables full Firewalling/NAT mode.%3$s' .

			'(%4$s a or nothing if finished):%5$s'), "\n", "\n", "\n", trim($ifsmallist), " ");

		$lanif = chop(fgets($fp));

		if ($lanif == "exit") {

			exit;

		}

		if ($lanif == "") {

			/* It is OK to have just a WAN, without a LAN so break if the user does not want LAN. */

			break;

		}

		if ($lanif === "a") {

			$lanif = autodetect_interface("LAN", $fp);

		} else if (!array_key_exists($lanif, $iflist)) {

			printf(gettext('%1$sInvalid interface name \'%2$s\'%3$s'), "\n", $lanif, "\n");

			unset($lanif);

			continue;

		}

		$ifsmallist = str_replace(" " . $lanif . " ", " ", $ifsmallist);

	} while (!$lanif);

	/* optional interfaces */

	$i = 0;

	$optif = array();

	if ($lanif <> "") {

		while (strlen(trim($ifsmallist)) > 0) {

			if (!empty($optif[$i])) {

				$i++;

			}

			$io = $i + 1;

			$if_descr_config = config_get_path("interfaces/opt{$io}/descr");

			if ($if_descr_config) {

				printf(gettext('%1$sOptional interface %2$s description found: %3$s'), "\n", $io, $if_descr_config);

			}

			printf(gettext('%1$sEnter the Optional %2$s interface name or \'a\' for auto-detection%3$s' .

				'(%4$s a or nothing if finished):%5$s'), "\n", $io, "\n", trim($ifsmallist), " ");

			$optif[$i] = chop(fgets($fp));

			if ($optif[$i]) {

				if ($optif[$i] === "a") {

					$ad = autodetect_interface(gettext("Optional") . " " . $io, $fp);

					if ($ad) {

						$optif[$i] = $ad;

					} else {

						unset($optif[$i]);

					}

				} else if (!array_key_exists($optif[$i], $iflist)) {

					printf(gettext('%1$sInvalid interface name \'%2$s\'%3$s'), "\n", $optif[$i], "\n");

					unset($optif[$i]);

					continue;

				}

				$ifsmallist = str_replace(" " . $optif[$i] . " ", " ", $ifsmallist);

			} else {

				unset($optif[$i]);

				break;

			}

		}

	}

	/* check for double assignments */

	$ifarr = array_merge(array($lanif, $wanif), $optif);

	for ($i = 0; $i < (count($ifarr)-1); $i++) {

		for ($j = ($i+1); $j < count($ifarr); $j++) {

			if ($ifarr[$i] == $ifarr[$j]) {

				echo <<<EOD

Error: The same interface name cannot be assigned twice!

EOD;

				fclose($fp);

				return (-2);

			}

		}

	}

	echo "\n" . gettext("The interfaces will be assigned as follows:") . "\n\n";

	echo "WAN  -> " . $wanif . "\n";

	if ($lanif != "") {

		echo "LAN  -> " . $lanif . "\n";

	}

	for ($i = 0; $i < count($optif); $i++) {

		echo "OPT" . ($i+1) . " -> " . $optif[$i] . "\n";

	}

	echo "\n" . gettext("Do you want to proceed [y|n]?") . " ";

	$key = chop(fgets($fp));

	if (in_array($key, array('y', 'Y'))) {

		if ($lanif) {

			$if_lan_config = config_get_path('interfaces/lan');

			if (is_array($if_lan_config)) {

				$upints = pfSense_interface_listget(IFF_UP);

				if (in_array($if_lan_config['if'], $upints))

					interface_bring_down('lan', true);

			}

			if (!is_array($if_lan_config)) {

				$if_lan_config['lan'] = array();

			}

			$if_lan_config['if'] = $lanif;

			$if_lan_config['enable'] = true;

			config_set_path('interfaces/lan', $if_lan_config);

		} elseif (!is_platform_booting()) {

			echo "\n" . gettext("You have chosen to remove the LAN interface.") . "\n";

			echo "\n" . gettext("Would you like to remove the LAN IP address and \nunload the interface now [y|n]?") . " ";

			$if_lan_config = config_get_path('interfaces/lan');

			if (strcasecmp(chop(fgets($fp)), "y") == 0) {

				if (isset($if_lan_config) && $if_lan_config['if']) {

					mwexec("/sbin/ifconfig {$if_lan_config['if']} delete");

				}

			}

			if (isset($if_lan_config)) {

				config_del_path('interfaces/lan');

			}

			config_del_path('dhcpd/lan');

			config_del_path('dhcpdv6/lan');

			config_del_path('interfaces/wan/blockpriv');

			config_del_path('shaper');

			config_del_path('ezshaper');

			config_del_path('nat');

		} else {

			$if_lan_config = config_get_path('interfaces/lan');

			if (isset($if_lan_config['if'])) {

				mwexec("/sbin/ifconfig {$if_lan_config['if']} delete");

			}

			if (isset($if_lan_config)) {

				config_del_path('interfaces/lan');

			}

			config_del_path('dhcpd/lan');

			config_del_path('dhcpdv6/lan');

			config_del_path('interfaces/wan/blockpriv');

			config_del_path('shaper');

			config_del_path('ezshaper');

			config_del_path('nat');

		}

		$if_lan_config = config_get_path('interfaces/lan');

		if (preg_match(g_get('wireless_regex'), $lanif)) {

			if (is_array($if_lan_config) &&

			    !is_array($if_lan_config['wireless'])) {

				config_set_path('interfaces/lan/wireless', []);

			}

		} else {

			if (isset($if_lan_config)) {

				config_del_path('interfaces/lan/wireless');

			}

		}

		if (is_array(config_get_path('interfaces/wan'))) {

			$upints = pfSense_interface_listget(IFF_UP);

			if (in_array(config_get_path('interfaces/wan/if'), $upints))

				interface_bring_down('wan', true);

		}

		$if_wan_config = config_get_path('interfaces/wan', []);

		$if_wan_config['if'] = $wanif;

		$if_wan_config['enable'] = true;

		if (preg_match(g_get('wireless_regex'), $wanif)) {

			if (is_array($if_wan_config) &&

			    !is_array($if_wan_config['wireless'])) {

				$if_wan_config['wireless'] = array();

			}

		} else {

			if (isset($if_wan_config)) {

				unset($if_wan_config['wireless']);

			}

		}

		config_set_path('interfaces/wan', $if_wan_config);

		$if_opt_counter = 0;

		for (; $if_opt_counter < count($optif); $if_opt_counter++) {

			$if_opt_name = 'opt' . ($if_opt_counter+1);

			if (is_array(config_get_path("interfaces/{$if_opt_name}"))) {

				$upints = pfSense_interface_listget(IFF_UP);

				if (in_array(config_get_path("interfaces/{$if_opt_name}/if"), $upints))

					interface_bring_down($if_opt_name, true);

			}

			$if_opt_config = config_get_path("interfaces/{$if_opt_name}", []);

			$if_opt_config['if'] = $optif[$if_opt_counter];

			/* wireless interface? */

			if (preg_match(g_get('wireless_regex'), $optif[$i])) {

				if (!is_array($if_opt_config['wireless'])) {

					$if_opt_config['wireless'] = array();

				}

			} else {

				unset($if_opt_config['wireless']);

			}

			if (empty($if_opt_config['descr'])) {

				$if_opt_config['descr'] = strtoupper($if_opt_name);

			}

			config_set_path("interfaces/{$if_opt_name}", $if_opt_config);

		}

		/* remove all other (old) optional interfaces */

		$if_config = config_get_path('interfaces', []);

		for (; isset($if_config['opt' . ($if_opt_counter+1)]); $if_opt_counter++) {

			unset($if_config['opt' . ($if_opt_counter+1)]);

		}

		config_set_path('interfaces', $if_config);

		printf(gettext("%sWriting configuration..."), "\n");

		write_config(gettext("Console assignment of interfaces"));

		printf(gettext("done.%s"), "\n");

		fclose($fp);

		echo gettext("One moment while the settings are reloading...");

		touch("{$g['tmp_path']}/assign_complete");

		if (file_exists("{$g['conf_path']}/trigger_initial_wizard")) {

			// Let the system know that the interface assign part of initial setup has been done.

			touch("{$g['conf_path']}/assign_complete");

		}

		echo gettext(" done!") . "\n";

		return (0);

	}

	return (1);

}

function autodetect_interface($ifname, $fp) {

	$iflist_prev = get_interface_list("media");

	echo <<<EOD

Connect the {$ifname} interface now and make sure that the link is up.

Then press ENTER to continue.

EOD;

	fgets($fp);

	$iflist = get_interface_list("media");

	foreach ($iflist_prev as $ifn => $ifa) {

		if (!$ifa['up'] && $iflist[$ifn]['up']) {

			printf(gettext('Detected link-up on interface %1$s.%2$s'), $ifn, "\n");

			return $ifn;

		}

	}

	printf(gettext("No link-up detected.%s"), "\n");

	return null;

}

function interfaces_setup() {

	global $iflist;

	$iflist = get_interface_list();

}

function vlan_setup() {

	global $iflist, $fp;

	$iflist = get_interface_list();

	$vlancfg = config_get_path('vlans/vlan');

	if (is_array($vlancfg) && count($vlancfg)) {

		echo "\n" . gettext("WARNING: all existing VLANs will be cleared if you proceed!") . "\n";

		echo "\n" . gettext("Do you want to proceed [y|n]?") . " ";

		if (strcasecmp(chop(fgets($fp)), "y") != 0) {

			return;

		}

	}

	echo "\n";

	$vlanif = 0;

	while (1) {

		$vlan = array();

		echo "\n\n" . gettext("VLAN Capable interfaces:") . "\n\n";

		if (!is_array($iflist)) {

			echo gettext("No interfaces found!") . "\n";

		} else {

			$vlan_capable = 0;

			foreach ($iflist as $iface => $ifa) {

				echo sprintf("% -8s%s%s\n", $iface, $ifa['mac'],

				    $ifa['up'] ? "   (up)" : "");

				$vlan_capable++;

			}

		}

		if ($vlan_capable == 0) {

			echo gettext("No VLAN capable interfaces detected.") . "\n";

			return;

		}

		echo "\n" . gettext("Enter the parent interface name for the new VLAN (or nothing if finished):") . " ";

		$vlan['if'] = chop(fgets($fp));

		if ($vlan['if']) {

			if (!array_key_exists($vlan['if'], $iflist)) {

				printf(gettext(

				    '%1$sInvalid interface name \'%2$s\'%3$s'),

				    "\n", $vlan['if'], "\n");

				continue;

			}

		} else {

			break;

		}

		echo gettext("Enter the VLAN tag (1-4094):") . " ";

		$vlan['tag'] = chop(fgets($fp));

		$vlan['vlanif'] = vlan_interface($vlan);

		if (!is_numericint($vlan['tag']) || ($vlan['tag'] < 1) || ($vlan['tag'] > 4094)) {

			printf(gettext('%1$sInvalid VLAN tag \'%2$s\'%3$s'), "\n", $vlan['tag'], "\n");

			continue;

		}

		foreach (config_get_path('vlans/vlan', []) as $existingvlan) {

			if ($vlan['if'] == $existingvlan['if'] && $vlan['tag'] == $existingvlan['tag']) {

				printf("\n\n" . gettext("This parent interface and VLAN already created."));

				continue 2;

			}

		}

		config_set_path('vlans/vlan/', $vlan);

		$vlanif++;

	}

}

function installer_add_gateway($if, $gateway) {

	if (!isset($if) || strlen($if) == 0 ||

	    !isset($gateway) || strlen($gateway) == 0) {

		return (-1);

	}

	/* Delete the gateway first, if already present. */

	$gws = config_get_path('gateways/gateway_item', []);

	$gws = array_filter($gws, function($gw) use ($gateway, $if) {

		if ($gw['gateway'] == $gateway && $gw['interface'] == $if) {

			return (false);

		}

		return (true);

	});

	config_set_path('gateways/gateway_item', $gws);

	/* Add the interface gateway. */

	$gwname = strtoupper($if) . "GW";

	$gw = [

	    'interface'			=> $if,

	    'gateway'			=> $gateway,

	    'ipprotocol'		=> 'inet',

	    'name'			=> $gwname,

	    'descr'			=> "",

	    'weight'			=> "",

	    'gw_down_kill_states'	=> "",

	];

	config_set_path('gateways/gateway_item/', $gw);

	config_set_path('gateways/defaultgw4', $gwname);

	config_set_path("interfaces/{$if}/gateway", $gwname);

	return (0);

}

function installer_add_pppoe($dev, $if, $user, $pass, $svc, $svc_null) {

	$newid = 0;

	/* Remove any existing PPPoE settings on the interface. */

	$ppps = config_get_path('ppps/ppp', []);

	$ppps = array_filter($ppps, function($ppp) use (&$newid, $dev) {

		if ($ppp['type'] == "pppoe" && $ppp['ports'] == $dev) {

			return (false);

		}

		$newid = max($newid, $ppp['ptpid'] + 1);

		return (true);

	});

	config_set_path('ppps/ppp', $ppps);

	/* Add the PPPoE connection. */

	$ppp = [

	    'ptpid'	=> $newid,

	    'type'	=> 'pppoe',

	    'if'	=> "pppoe{$newid}",

	    'ports'	=> $dev,

	    'username'	=> $user,

	    'password'	=> base64_encode($pass),

	    'bandwidth'	=> "",

	    'mtu'	=> "",

	    'mru'	=> "",

	    'mrru'	=> "",

	];

	if ($svc_null !== true) {

		$ppp['provider'] = $svc;

	}

	config_set_path('ppps/ppp/', $ppp);

	config_set_path("interfaces/{$if}/enable", '');

	config_set_path("interfaces/{$if}/ipaddr", 'pppoe');

	config_set_path("interfaces/{$if}/if", "pppoe{$newid}");

	config_del_path("interfaces/{$if}/subnet");

	config_del_path("interfaces/{$if}/media");

	config_del_path("interfaces/{$if}/mediaopt");

	config_del_path("interfaces/{$if}/gateway");

	return (0);

}

function installer_add_vlan($dev, $if, $descr, $tag, $pcp) {

	if (intval($tag) < 1 || intval($tag) > 4094 ||

	    intval($pcp) < 0 || intval($pcp) > 7) {

		return (-1);

	}

	/* Delete the VLAN is already present. */

	$vlans = config_get_path('vlans/vlan', []);

	$vlans = array_filter($vlans, function($vlan) use ($dev, $tag) {

		if ($vlan['tag'] == $tag && $vlan['if'] == $dev) {

			return (false);

		}

		return (true);

	});

	config_set_path('vlans/vlan', $vlans);

	/* Remove other interfaces using this VLAN tag. */

	$ifs = config_get_path('interfaces', []);

	$ifs = array_filter($ifs, function($intf) use ($dev, $if, $tag) {

		if ($intf != $if && $intf['if'] == "{$dev}.{$tag}") {

			return (false);

		}

		return (true);

	});

	config_set_path('interfaces', $ifs);

	/* Add the VLAN. */

	$vlan = [

	    'if'	=> $dev,

	    'tag'	=> $tag,

	    'pcp'	=> $pcp,

	    'descr'	=> $descr,

	    'vlanif'	=> "{$dev}.{$tag}",

	];

	config_set_path('vlans/vlan/', $vlan);

	return (0);

}

function installer_disable_lan() {

	config_del_path('interfaces/lan');

	return (0);

}

function installer_setup_lan($lan) {

	if (!isset($lan->if) ||

	    !does_interface_exist($lan->if)) {

		return (-1);

	}

	$if = $lan->if;

	/* VLAN setup. */

	if (isset($lan->vlan) && intval($lan->vlan) > 0) {

		if (installer_add_vlan($lan->if, "lan", "LAN",

		    $lan->vlan, $lan->vlan_pcp) != 0) {

			return (-1);

		}

		$if = "{$lan->if}.{$lan->vlan}";

	}

	config_set_path('interfaces/lan/if', $if);

	switch ($lan->mode) {

	case "DHCP":

		config_set_path('interfaces/lan/enable', '');

		config_set_path('interfaces/lan/ipaddr', 'dhcp');

		config_set_path('interfaces/lan/ipaddrv6', 'dhcp6');

		config_set_path('interfaces/lan/subnet', '');

		config_set_path('interfaces/lan/gateway', '');

		config_set_path('interfaces/lan/media', '');

		config_set_path('interfaces/lan/mediaopt', '');

		break;

	case "STATIC":

		list ($ip, $subnet) = explode("/", $lan->ip);

		if (empty($subnet)) {

			$subnet = "24";

		}

		config_set_path('interfaces/lan/enable', '');

		config_set_path('interfaces/lan/ipaddr', $ip);

		config_del_path('interfaces/lan/ipaddrv6');

		config_set_path('interfaces/lan/subnet', $subnet);

		config_set_path('interfaces/lan/media', '');

		config_set_path('interfaces/lan/mediaopt', '');

		break;

	}

	/* dhcpd. */

	if (isset($lan->dhcpd_enabled) &&

	    isset($lan->dhcpd_range_start) &&

	    isset($lan->dhcpd_range_end) &&

	    $lan->dhcpd_enabled === true) {

		config_set_path('dhcpd/lan/enable', '');

		config_set_path('dhcpd/lan/range/from', $lan->dhcpd_range_start);

		config_set_path('dhcpd/lan/range/to', $lan->dhcpd_range_end);

	} else {

		config_del_path('dhcpd/lan/enable');

	}

	return (0);

}

function installer_setup_wan($wan) {

	if (!isset($wan->if) ||

	    !does_interface_exist($wan->if)) {

		return (-1);

	}

	$if = $wan->if;

	/* VLAN setup. */

	if (isset($wan->vlan) && intval($wan->vlan) > 0) {

		if (installer_add_vlan($wan->if, "wan", "WAN",

		    $wan->vlan, $wan->vlan_pcp) != 0) {

			return (-1);

		}

		$if = "{$wan->if}.{$wan->vlan}";

	}

	config_set_path('interfaces/wan/if', $if);

	switch ($wan->mode) {

	case "DHCP":

		config_set_path('interfaces/wan/enable', '');

		config_set_path('interfaces/wan/ipaddr', 'dhcp');

		config_set_path('interfaces/wan/ipaddrv6', 'dhcp6');

		config_set_path('interfaces/wan/subnet', '');

		config_set_path('interfaces/wan/gateway', '');

		config_set_path('interfaces/wan/media', '');

		config_set_path('interfaces/wan/mediaopt', '');

		break;

	case "PPPoE":

		if (installer_add_pppoe($if, "wan", $wan->PPPoE_User,

		    $wan->PPPoE_Password, $wan->PPPoE_Service_Name,

		    $wan->PPPoE_NULL_Service) != 0) {

			return (-1);

		}

		break;

	case "STATIC":

		list ($ip, $subnet) = explode("/", $wan->ip);

		if (empty($subnet)) {

			$subnet = "24";

		}

		config_set_path('interfaces/wan/enable', '');

		config_set_path('interfaces/wan/ipaddr', $ip);

		config_del_path('interfaces/wan/ipaddrv6');

		config_set_path('interfaces/wan/subnet', $subnet);

		config_set_path('interfaces/wan/media', '');

		config_set_path('interfaces/wan/mediaopt', '');

		if (isset($wan->default_gateway) &&

		    strlen($wan->default_gateway) > 0) {

			if (installer_add_gateway("wan", $wan->default_gateway) != 0) {

				return (-1);

			}

		}

		break;

	}

	/* DNS. */

	if (isset($wan->DNS_server) && strlen($wan->DNS_server) > 0) {

		config_set_path('system/dnsserver', $wan->DNS_server);

	} else {

		config_del_path('system/dnsserver');

	}

	return (0);

}

function installer_settings_import() {

	global $g;

	/* Should not happen. */

	if (!file_exists("{$g['conf_path']}/installer-settings.json")) {

		return (-1);

	}

	/* Do not accept files bigger than 64KiB. */

	$size = filesize("{$g['conf_path']}/installer-settings.json");

	if ($size === false || $size >= 64 * 1024) {

		return (-1);

	}

	/* Read the settings from the Netgate Installer. */

	$settings = file_get_contents("{$g['conf_path']}/installer-settings.json");

	if ($settings === false) {

		return (0);

	}

	$json = json_decode($settings);

	if ($json === NULL ||

	    !isset($json->lan) ||

	    !isset($json->wan)) {

		return (0);

	}

	$lan = $json->lan;

	$wan = $json->wan;

	/* WAN setup. */

	if (isset($wan->if) &&

	    does_interface_exist($wan->if) &&

	    installer_setup_wan($wan) != 0) {

		return (-1);

	}

	/* LAN setup. */

	if (isset($lan->if) &&

	    does_interface_exist($lan->if)) {

		if (installer_setup_lan($lan) != 0) {

			return (-1);

		}

	} else {

		installer_disable_lan();

	}

	/* Remove the settings file. */

	unlink("{$g['conf_path']}/installer-settings.json");

	/* Let the system know that the interface assignment is done. */

	touch("{$g['conf_path']}/assign_complete");

	write_config(gettext("Network settings imported from the Netgate Installer"));

	return (0);

}

function check_for_alternate_interfaces() {

	// If the WAN and/or LAN devices in the factory default config do not exist,

	// then look for alternate devices.

	// This lets many systems boot a factory default config without being

	// forced to do interface assignment on the console.