pfSense

<?php

/*

 * system_gateways.php

 *

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

 * Copyright (c) 2004-2018 Rubicon Communications, LLC (Netgate)

 * Copyright (c) 2010 Seth Mos <seth.mos@dds.nl>

 * 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.

 */

##|+PRIV

##|*IDENT=page-system-gateways

##|*NAME=System: Gateways

##|*DESCR=Allow access to the 'System: Gateways' page.

##|*MATCH=system_gateways.php*

##|-PRIV

require_once("guiconfig.inc");

require_once("functions.inc");

require_once("filter.inc");

require_once("shaper.inc");

require_once("gwlb.inc");

$simplefields = array('defaultgw4', 'defaultgw6');

$a_gateways = return_gateways_array(true, false, true, true);

if (!is_array($config['gateways'])) {

	$config['gateways'] = array();

}

if (!is_array($config['gateways']['gateway_item'])) {

	$config['gateways']['gateway_item'] = array();

}

$a_gateway_item = &$config['gateways']['gateway_item'];

$pconfig = $_REQUEST;

if ($_POST['save']) {

	unset($input_errors);

	$pconfig = $_POST;

	foreach($simplefields as $field) {

		$config['gateways'][$field] = $pconfig[$field];

	}

	mark_subsystem_dirty('staticroutes');

	write_config("System - Gateways: save default gateway");

}

if ($_POST['apply']) {

	$retval = 0;

	$retval |= system_routing_configure();

	$retval |= system_resolvconf_generate();

	$retval |= filter_configure();

	/* reconfigure our gateway monitor */

	setup_gateways_monitor();

	/* Dynamic DNS on gw groups may have changed */

	send_event("service reload dyndnsall");

	if ($retval == 0) {

		clear_subsystem_dirty('staticroutes');

	}

}

function can_delete_disable_gateway_item($id, $disable = false) {

	global $config, $input_errors, $a_gateways;

	if (!isset($a_gateways[$id])) {

		return false;

	}

	if (is_array($config['gateways']['gateway_group'])) {

		foreach ($config['gateways']['gateway_group'] as $group) {

			foreach ($group['item'] as $item) {

				$items = explode("|", $item);

				if ($items[0] == $a_gateways[$id]['name']) {

					if (!$disable) {

						$input_errors[] = sprintf(gettext('Gateway "%1$s" cannot be deleted because it is in use on Gateway Group "%2$s"'), $a_gateways[$id]['name'], $group['name']);

					} else {

						$input_errors[] = sprintf(gettext('Gateway "%1$s" cannot be disabled because it is in use on Gateway Group "%2$s"'), $a_gateways[$id]['name'], $group['name']);

					}

				}

			}

		}

	}

	if (is_array($config['staticroutes']['route'])) {

		foreach ($config['staticroutes']['route'] as $route) {

			if ($route['gateway'] == $a_gateways[$id]['name']) {

				if (!$disable) {

					// The user wants to delete this gateway, but there is a static route (enabled or disabled) that refers to the gateway.

					$input_errors[] = sprintf(gettext('Gateway "%1$s" cannot be deleted because it is in use on Static Route "%2$s"'), $a_gateways[$id]['name'], $route['network']);

				} else if (!isset($route['disabled'])) {

					// The user wants to disable this gateway.

					// But there is a static route that uses this gateway and is enabled (not disabled).

					$input_errors[] = sprintf(gettext('Gateway "%1$s" cannot be disabled because it is in use on Static Route "%2$s"'), $a_gateways[$id]['name'], $route['network']);

				}

			}

		}

	}

	if (isset($input_errors)) {

		return false;

	}

	return true;

}

function delete_gateway_item($id) {

	global $config, $a_gateways;

	if (!isset($a_gateways[$id])) {

		return;

	}

	/* If the removed gateway was the default route, remove the default route */

	if (!empty($a_gateways[$id]) && is_ipaddr($a_gateways[$id]['gateway']) &&

	    !isset($a_gateways[$id]['disabled']) &&

	    isset($a_gateways[$id]['isdefaultgw'])) {

		$inet = (!is_ipaddrv4($a_gateways[$id]['gateway']) ? '-inet6' : '-inet');

		file_put_contents("/dev/console", "\n[".getmypid()."] DEL_GW, route= delete {$inet} default");

		mwexec("/sbin/route delete {$inet} default");

	}

	/* NOTE: Cleanup static routes for the interface route if any */

	if (!empty($a_gateways[$id]) && is_ipaddr($a_gateways[$id]['gateway']) &&

	    $gateway['gateway'] != $a_gateways[$id]['gateway'] &&

	    isset($a_gateways[$id]["nonlocalgateway"])) {

		$realif = get_real_interface($a_gateways[$id]['interface']);

		$inet = (!is_ipaddrv4($a_gateways[$id]['gateway']) ? "-inet6" : "-inet");

		file_put_contents("/dev/console", "\n[".getmypid()."] DEL_GW, route= $inet " . escapeshellarg($a_gateways[$id]['gateway']) . " -iface " . escapeshellarg($realif));

		$cmd = "/sbin/route delete $inet " . escapeshellarg($a_gateways[$id]['gateway']) . " -iface " . escapeshellarg($realif);

		mwexec($cmd);

	}

	/* NOTE: Cleanup static routes for the monitor ip if any */

	if (!empty($a_gateways[$id]['monitor']) &&

	    $a_gateways[$id]['monitor'] != "dynamic" &&

	    is_ipaddr($a_gateways[$id]['monitor']) &&

	    $a_gateways[$id]['gateway'] != $a_gateways[$id]['monitor']) {

		if (is_ipaddrv4($a_gateways[$id]['monitor'])) {

			mwexec("/sbin/route delete " . escapeshellarg($a_gateways[$id]['monitor']));

		} else {

			mwexec("/sbin/route delete -inet6 " . escapeshellarg($a_gateways[$id]['monitor']));

		}

	}

	if ($config['interfaces'][$a_gateways[$id]['friendlyiface']]['gateway'] == $a_gateways[$id]['name']) {

		unset($config['interfaces'][$a_gateways[$id]['friendlyiface']]['gateway']);

	}

	unset($config['gateways']['gateway_item'][$a_gateways[$id]['attribute']]);

}

unset($input_errors);

if ($_REQUEST['act'] == "del") {

	if (can_delete_disable_gateway_item($_REQUEST['id'])) {

		$realid = $a_gateways[$_REQUEST['id']]['attribute'];

		delete_gateway_item($_REQUEST['id']);

		write_config("Gateways: removed gateway {$realid}");

		mark_subsystem_dirty('staticroutes');

		header("Location: system_gateways.php");

		exit;

	}

}

if (isset($_REQUEST['del_x'])) {

	/* delete selected items */

	if (is_array($_REQUEST['rule']) && count($_REQUEST['rule'])) {

		foreach ($_REQUEST['rule'] as $rulei) {

			if (!can_delete_disable_gateway_item($rulei)) {

				break;

			}

		}

		if (!isset($input_errors)) {

			$items_deleted = "";

			foreach ($_REQUEST['rule'] as $rulei) {

				delete_gateway_item($rulei);

				$items_deleted .= "{$rulei} ";

			}

			if (!empty($items_deleted)) {

				write_config(sprintf(gettext("Gateways: removed gateways %s", $items_deleted)));

				mark_subsystem_dirty('staticroutes');

			}

			header("Location: system_gateways.php");

			exit;

		}

	}

} else if ($_REQUEST['act'] == "toggle" && $a_gateways[$_REQUEST['id']]) {

	$realid = $a_gateways[$_REQUEST['id']]['attribute'];

	$disable_gw = !isset($a_gateway_item[$realid]['disabled']);

	if ($disable_gw) {

		// The user wants to disable the gateway, so check if that is OK.

		$ok_to_toggle = can_delete_disable_gateway_item($_REQUEST['id'], $disable_gw);

	} else {

		// The user wants to enable the gateway. That is always OK.

		$ok_to_toggle = true;

	}

	if ($ok_to_toggle) {

		gateway_set_enabled($a_gateway_item[$realid]['name'], !$disable_gw);

		if (write_config("Gateways: enable/disable")) {

			mark_subsystem_dirty('staticroutes');

		}

		header("Location: system_gateways.php");

		exit;

	}

}

foreach($simplefields as $field) {

	$pconfig[$field] = $config['gateways'][$field];

}

function gateway_displaygwtiername($gwname) {

	global $config;

	$gw = lookup_gateway_or_group_by_name($gwname);

	if ($config['gateways']['defaultgw4'] == $gwname || $config['gateways']['defaultgw6'] == $gwname) {

		$result = "Default";

	} else {

		if ($gw['ipprotocol'] == 'inet') {

			$defgw = lookup_gateway_or_group_by_name($config['gateways']['defaultgw4']);

		} else {

			$defgw = lookup_gateway_or_group_by_name($config['gateways']['defaultgw6']);

		}

		if ($defgw['type'] == "gatewaygroup") {

			$detail = gateway_is_gwgroup_member($gwname, true);

			foreach($detail as $gwitem) {

				if ($gwitem['name'] == $defgw['name']) {

					if (isset($gwitem['tier'])) {

						$result = "Tier " . $gwitem['tier'];

						break;

					}

				}

			}

		}

	}

	if (!empty($result)) {

		$result .= $gw['ipprotocol'] == "inet" ? " (IPv4)" : " (IPv6)";

	}

	return $result;

}

$pgtitle = array(gettext("System"), gettext("Routing"), gettext("Gateways"));

$pglinks = array("", "@self", "@self");

$shortcut_section = "gateways";

include("head.inc");

if ($input_errors) {

	print_input_errors($input_errors);

}

if ($_POST['apply']) {

	print_apply_result_box($retval);

}

if (is_subsystem_dirty('staticroutes')) {

	print_apply_box(gettext("The gateway configuration has been changed.") . "<br />" . gettext("The changes must be applied for them to take effect."));

}

$tab_array = array();

$tab_array[0] = array(gettext("Gateways"), true, "system_gateways.php");

$tab_array[1] = array(gettext("Static Routes"), false, "system_routes.php");

$tab_array[2] = array(gettext("Gateway Groups"), false, "system_gateway_groups.php");

display_top_tabs($tab_array);

?>

<div class="panel panel-default">

	<div class="panel-heading"><h2 class="panel-title"><?=gettext('Gateways')?></h2></div>

	<div class="panel-body">

		<div class="table-responsive">

			<table class="table table-striped table-hover table-condensed table-rowdblclickedit">

				<thead>

					<tr>

						<th></th>

						<th><?=gettext("Name")?></th>

						<th><?=gettext("Default")?></th>

						<th><?=gettext("Interface")?></th>

						<th><?=gettext("Gateway")?></th>

						<th><?=gettext("Monitor IP")?></th>

						<th><?=gettext("Description")?></th>

						<th><?=gettext("Actions")?></th>

					</tr>

				</thead>

				<tbody>

<?php

foreach ($a_gateways as $i => $gateway):

	if (isset($gateway['inactive'])) {

		$icon = 'fa-times-circle-o';

	} elseif (isset($gateway['disabled'])) {

		$icon = 'fa-ban';

	} else {

		$icon = 'fa-check-circle-o';

	}

	if (isset($gateway['inactive'])) {

		$title = gettext("This gateway is inactive because interface is missing");

	} else {

		$title = '';

	}

?>

				<tr<?=($icon != 'fa-check-circle-o')? ' class="disabled"' : ''?>>

					<td title="<?=$title?>"><i class="fa <?=$icon?>"></i></td>

					<td>

						<?=htmlspecialchars($gateway['name'])?>

<?php

						if (isset($gateway['isdefaultgw'])) {

							echo " <strong>(default)</strong>";

						}

?>

						</td>

						<td>

							<?=gateway_displaygwtiername($gateway['name'])?>

						</td>

						<td>

							<?=htmlspecialchars(convert_friendly_interface_to_friendly_descr($gateway['friendlyiface']))?>

						</td>

						<td>

							<?=htmlspecialchars($gateway['gateway'])?>

						</td>

						<td>

							<?=htmlspecialchars($gateway['monitor'])?>

						</td>

						<td>

							<?=htmlspecialchars($gateway['descr'])?>

						</td>

						<td>

							<a href="system_gateways_edit.php?id=<?=$i?>" class="fa fa-pencil" title="<?=gettext('Edit gateway');?>"></a>

							<a href="system_gateways_edit.php?dup=<?=$i?>" class="fa fa-clone" title="<?=gettext('Copy gateway')?>"></a>

<?php if (is_numeric($gateway['attribute'])): ?>

	<?php if (isset($gateway['disabled'])) {

	?>

							<a href="?act=toggle&amp;id=<?=$i?>" class="fa fa-check-square-o" title="<?=gettext('Enable gateway')?>" usepost></a>

	<?php } else {

	?>

							<a href="?act=toggle&amp;id=<?=$i?>" class="fa fa-ban" title="<?=gettext('Disable gateway')?>" usepost></a>

	<?php }

	?>

							<a href="system_gateways.php?act=del&amp;id=<?=$i?>" class="fa fa-trash" title="<?=gettext('Delete gateway')?>" usepost></a>

<?php endif; ?>

						</td>

					</tr>

<?php endforeach; ?>

				</tbody>

			</table>

		</div>

	</div>

</div>

<nav class="action-buttons">

	<a href="system_gateways_edit.php" role="button" class="btn btn-success">

		<i class="fa fa-plus icon-embed-btn"></i>

		<?=gettext("Add");?>

	</a>

</nav>

<?php

$form = new Form;

$section = new Form_Section('Default gateway');

$items4 = array();

$items6 = array();

$items4['-'] = "None";

$items6['-'] = "None";

foreach($a_gateways as $gw) {

	$gwn = $gw['name'];

	if ($gw['ipprotocol'] == "inet6") {

		$items6[$gwn] = $gwn;

	} else {

		$items4[$gwn] = $gwn;

	}

}

$groups = return_gateway_groups_array();

foreach ($groups as $key => $group) {

	$gwn = $group['descr'];

	if ($group['ipprotocol'] == "inet6") {

		$items6[$key] = "$key ($gwn)";

	} else {

		$items4[$key] = "$key ($gwn)";

	}

}

$section->addInput(new Form_Select(

	'defaultgw4',

	'Default gateway IPv4',

	$pconfig['defaultgw4'],

	$items4

))->setHelp('Select the gateway or gatewaygroup to use as the default gateway.');

$section->addInput(new Form_Select(

	'defaultgw6',

	'Default gateway IPv6',

	$pconfig['defaultgw6'],

	$items6

))->setHelp('Select the gateway or gatewaygroup to use as the default gateway.');

$form->add($section);

print $form;

include("foot.inc");