pfSense

<?php

/*

	system_gateways.php

*/

/* ====================================================================

 *	Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.

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

 *

 *	Redistribution and use in source and binary forms, with or without modification,

 *	are permitted provided that the following conditions are met:

 *

 *	1. Redistributions of source code must retain the above copyright notice,

 *		this list of conditions and the following disclaimer.

 *

 *	2. Redistributions in binary form must reproduce the above copyright

 *		notice, this list of conditions and the following disclaimer in

 *		the documentation and/or other materials provided with the

 *		distribution.

 *

 *	3. All advertising materials mentioning features or use of this software

 *		must display the following acknowledgment:

 *		"This product includes software developed by the pfSense Project

 *		 for use in the pfSense software distribution. (http://www.pfsense.org/).

 *

 *	4. The names "pfSense" and "pfSense Project" must not be used to

 *		 endorse or promote products derived from this software without

 *		 prior written permission. For written permission, please contact

 *		 coreteam@pfsense.org.

 *

 *	5. Products derived from this software may not be called "pfSense"

 *		nor may "pfSense" appear in their names without prior written

 *		permission of the Electric Sheep Fencing, LLC.

 *

 *	6. Redistributions of any form whatsoever must retain the following

 *		acknowledgment:

 *

 *	"This product includes software developed by the pfSense Project

 *	for use in the pfSense software distribution (http://www.pfsense.org/).

 *

 *	THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY

 *	EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 *	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 *	PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR

 *	ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 *	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 *	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 *	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 *	HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 *	STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 *	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 *	OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 *	====================================================================

 *

 */

/*

	pfSense_MODULE: routing

*/

##|+PRIV

##|*IDENT=page-system-gateways

##|*NAME=System: Gateways

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

##|*MATCH=system_gateways.php*

##|-PRIV

require("guiconfig.inc");

require_once("functions.inc");

require_once("filter.inc");

require_once("shaper.inc");

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

$a_gateways_arr = array();

foreach ($a_gateways as $gw) {

	$a_gateways_arr[] = $gw;

}

$a_gateways = $a_gateways_arr;

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

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

}

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

if ($_POST) {

	$pconfig = $_POST;

	if ($_POST['apply']) {

		$retval = 0;

		$retval = system_routing_configure();

		$retval |= filter_configure();

		/* reconfigure our gateway monitor */

		setup_gateways_monitor();

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

		send_event("service reload dyndnsall");

		$savemsg = get_std_save_message($retval);

		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 '%s' cannot be deleted because it is in use on Gateway Group '%s'"), $a_gateways[$id]['name'], $group['name']);

					} else {

						$input_errors[] = sprintf(gettext("Gateway '%s' cannot be disabled because it is in use on Gateway Group '%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 '%s' cannot be deleted because it is in use on Static Route '%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 '%s' cannot be disabled because it is in use on Static Route '%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;

	}

	/* 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");

		$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 ($_GET['act'] == "del") {

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

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

		delete_gateway_item($_GET['id']);

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

		mark_subsystem_dirty('staticroutes');

		header("Location: system_gateways.php");

		exit;

	}

}

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

	/* delete selected items */

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

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

			if (!can_delete_disable_gateway_item($rulei)) {

				break;

			}

		}

		if (!isset($input_errors)) {

			$items_deleted = "";

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

				delete_gateway_item($rulei);

				$items_deleted .= "{$rulei} ";

			}

			if (!empty($items_deleted)) {

				write_config("Gateways: removed gateways {$items_deleted}");

				mark_subsystem_dirty('staticroutes');

			}

			header("Location: system_gateways.php");

			exit;

		}

	}

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

	$realid = $a_gateways[$_GET['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.

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

	} else {

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

		$ok_to_toggle = true;

	}

	if ($ok_to_toggle) {

		if ($disable_gw) {

			$a_gateway_item[$realid]['disabled'] = true;

		} else {

			unset($a_gateway_item[$realid]['disabled']);

		}

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

			mark_subsystem_dirty('staticroutes');

		}

		header("Location: system_gateways.php");

		exit;

	}

}

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

$shortcut_section = "gateways";

include("head.inc");

if ($input_errors)

	print_input_errors($input_errors);

if ($savemsg)

	print_info_box($savemsg, 'success');

if (is_subsystem_dirty('staticroutes'))

	print_info_box_np(gettext("The gateway configuration has been changed.") . "<br />" . gettext("You must apply the changes in order for them to take effect."));

$tab_array = array();

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

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

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

display_top_tabs($tab_array);

?>

<table class="table">

<thead>

	<tr>

		<th></th>

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

			<?=$gateway['name']?>

<?php

			if (isset($gateway['defaultgw']))

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

?>

		</td>

		<td>

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

		</td>

		<td>

			<?=$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');?>"></a>

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

<? 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')?>"></a>

	<?php } else {

	?>

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

	<?php }

	?>

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

<? endif?>

		</td>

	</tr>

<? endforeach?>

</tbody>

</table>

<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

include("foot.inc");