pfSense

<?php

/* $Id$ */

/*

	system_gateways.php

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

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

	Copyright (C) 2013-2015 Electric Sheep Fencing, LP

	All rights reserved.

	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.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS 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

	AUTHOR 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 page

##|*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();

		$savemsg = get_std_save_message($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 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("Gateways"));

$shortcut_section = "gateways";

include("head.inc");

if ($input_errors)

	print_input_errors($input_errors);

if ($savemsg)

	print_info_box($savemsg);

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></th>

	</tr>

</thead>

<tbody>

<?php

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

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

		$icon = 'icon-remove-circle';

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

		$icon = 'icon-ban-circle';

	else

		$icon = 'icon-ok-circle';

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

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

	else

		$title = '';

?>

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

		<td title="<?=$title?>"><i class="icon <?=$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 class="btn btn-xs btn-primary" href="system_gateways_edit.php?id=<?=$i?>">

				edit

			</a>

			<a class="btn btn-xs btn-default" href="system_gateways_edit.php?dup=<?=$i?>">

				copy

			</a>

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

			<a class="btn btn-xs btn-danger" href="system_gateways.php?act=del&amp;id=<?=$i?>">

				delete

			</a>

			<a class="btn btn-xs btn-default" href="?act=toggle&amp;id=<?=$i?>">

				toggle

			</a>

<? endif?>

		</td>

	</tr>

<? endforeach?>

</tbody>

</table>

<nav class="action-buttons">

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

		<?=gettext("edit default");?>

	</a>

</nav>

<?php

include("foot.inc");