pfSense

<?php

/*

	system_routes_edit.php

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

	part of pfSense

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

	Copyright (C) 2010 Scott Ullrich

	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-staticroutes-editroute

##|*NAME=System: Static Routes: Edit route page

##|*DESCR=Allow access to the 'System: Static Routes: Edit route' page.

##|*MATCH=system_routes_edit.php*

##|-PRIV

require_once("guiconfig.inc");

require_once("filter.inc");

require_once("util.inc");

require_once("gwlb.inc");

$referer = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/system_routes.php');

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

	$config['staticroutes']['route'] = array();

$a_routes = &$config['staticroutes']['route'];

$a_gateways = return_gateways_array(true, true);

if (is_numericint($_GET['id']))

	$id = $_GET['id'];

if (isset($_POST['id']) && is_numericint($_POST['id']))

	$id = $_POST['id'];

if (isset($_GET['dup']) && is_numericint($_GET['dup']))

	$id = $_GET['dup'];

if (isset($id) && $a_routes[$id]) {

	list($pconfig['network'],$pconfig['network_subnet']) =

		explode('/', $a_routes[$id]['network']);

	$pconfig['gateway'] = $a_routes[$id]['gateway'];

	$pconfig['descr'] = $a_routes[$id]['descr'];

	$pconfig['disabled'] = isset($a_routes[$id]['disabled']);

}

if (isset($_GET['dup']) && is_numericint($_GET['dup']))

	unset($id);

if ($_POST) {

	global $aliastable;

	unset($input_errors);

	$pconfig = $_POST;

	/* input validation */

	$reqdfields = explode(" ", "network network_subnet gateway");

	$reqdfieldsn = explode(",",

			gettext("Destination network") . "," .

			gettext("Destination network bit count") . "," .

			gettext("Gateway"));

	do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);

	if (($_POST['network'] && !is_ipaddr($_POST['network']) && !is_alias($_POST['network']))) {

		$input_errors[] = gettext("A valid IPv4 or IPv6 destination network must be specified.");

	}

	if (($_POST['network_subnet'] && !is_numeric($_POST['network_subnet']))) {

		$input_errors[] = gettext("A valid destination network bit count must be specified.");

	}

	if (($_POST['gateway']) && is_ipaddr($_POST['network'])) {

		if (!isset($a_gateways[$_POST['gateway']]))

			$input_errors[] = gettext("A valid gateway must be specified.");

		if(!validate_address_family($_POST['network'], $_POST['gateway']))

			$input_errors[] = gettext("The gateway '{$a_gateways[$_POST['gateway']]['gateway']}' is a different Address Family as network '{$_POST['network']}'.");

	}

	/* check for overlaps */

	$current_targets = get_staticroutes(true);

	$new_targets = array();

	if(is_ipaddrv6($_POST['network'])) {

		$osn = gen_subnetv6($_POST['network'], $_POST['network_subnet']) . "/" . $_POST['network_subnet'];

		$new_targets[] = $osn;

	}

	if (is_ipaddrv4($_POST['network'])) {

		if($_POST['network_subnet'] > 32)

			$input_errors[] = gettext("A IPv4 subnet can not be over 32 bits.");

		else {

			$osn = gen_subnet($_POST['network'], $_POST['network_subnet']) . "/" . $_POST['network_subnet'];

			$new_targets[] = $osn;

		}

	} elseif (is_alias($_POST['network'])) {

		$osn = $_POST['network'];

		foreach (preg_split('/\s+/', $aliastable[$osn]) as $tgt) {

			if (is_ipaddrv4($tgt))

				$tgt .= "/32";

			if (is_ipaddrv6($tgt))

				$tgt .= "/128";

			if (!is_subnet($tgt))

				continue;

			if (!is_subnetv6($tgt))

				continue;

			$new_targets[] = $tgt;

		}

	}

	if (!isset($id))

		$id = count($a_routes);

	$oroute = $a_routes[$id];

	$old_targets = array();

	if (!empty($oroute)) {

		if (is_alias($oroute['network'])) {

			foreach (filter_expand_alias_array($oroute['network']) as $tgt) {

				if (is_ipaddrv4($tgt))

					$tgt .= "/32";

				else if (is_ipaddrv6($tgt))

					$tgt .= "/128";

				if (!is_subnet($tgt))

					continue;

				$old_targets[] = $tgt;

			}

		} else {

			$old_targets[] = $oroute['network'];

		}

	}

	$overlaps = array_intersect($current_targets, $new_targets);

	$overlaps = array_diff($overlaps, $old_targets);

	if (count($overlaps)) {

		$input_errors[] = gettext("A route to these destination networks already exists") . ": " . implode(", ", $overlaps);

	}

	if (is_array($config['interfaces'])) {

		foreach ($config['interfaces'] as $if) {

			if (is_ipaddrv4($_POST['network'])

				&& isset($if['ipaddr']) && isset($if['subnet'])

				&& is_ipaddrv4($if['ipaddr']) && is_numeric($if['subnet'])

				&& ($_POST['network_subnet'] == $if['subnet'])

				&& (gen_subnet($_POST['network'], $_POST['network_subnet']) == gen_subnet($if['ipaddr'], $if['subnet'])))

					$input_errors[] = sprintf(gettext("This network conflicts with address configured on interface %s."), $if['descr']);

			else if (is_ipaddrv6($_POST['network'])

				&& isset($if['ipaddrv6']) && isset($if['subnetv6'])

				&& is_ipaddrv6($if['ipaddrv6']) && is_numeric($if['subnetv6'])

				&& ($_POST['network_subnet'] == $if['subnetv6'])

				&& (gen_subnetv6($_POST['network'], $_POST['network_subnet']) == gen_subnetv6($if['ipaddrv6'], $if['subnetv6'])))

					$input_errors[] = sprintf(gettext("This network conflicts with address configured on interface %s."), $if['descr']);

		}

	}

	if (!$input_errors) {

		$route = array();

		$route['network'] = $osn;

		$route['gateway'] = $_POST['gateway'];

		$route['descr'] = $_POST['descr'];

		if ($_POST['disabled'])

			$route['disabled'] = true;

		else

			unset($route['disabled']);

		if (file_exists("{$g['tmp_path']}/.system_routes.apply"))

			$toapplylist = unserialize(file_get_contents("{$g['tmp_path']}/.system_routes.apply"));

		else

			$toapplylist = array();

		$a_routes[$id] = $route;

		if (!empty($oroute)) {

			$delete_targets = array_diff($old_targets, $new_targets);

			if (count($delete_targets))

				foreach ($delete_targets as $dts) {

					if(is_ipaddrv6($dts))

						$family = "-inet6";

					$toapplylist[] = "/sbin/route delete {$family} {$dts}";

				}

		}

		file_put_contents("{$g['tmp_path']}/.system_routes.apply", serialize($toapplylist));

		mark_subsystem_dirty('staticroutes');

		write_config();

		header("Location: system_routes.php");

		exit;

	}

}

$pgtitle = array(gettext("System"),gettext("Static Routes"),gettext("Edit route"));

$shortcut_section = "routing";

include("head.inc");

if ($input_errors)

	print_input_errors($input_errors);

require('classes/Form.class.php');

$form = new Form;

if (isset($id) && $a_routes[$id]) {

	$form->addGlobal(new Form_Input(

		'id',

		null,

		'hidden',

		$id

	));

}

$section = new Form_Section('Edit route entry');

$section->addInput(new Form_IpAddress(

	'network_subnet',

	'Destination network',

	$pconfig['network']

))->addMask('network_subnet', $pconfig['network_subnet'])->setHelp('Destination network for this static route');

$allGateways = array_combine(

	array_map(function($g){ return $g['name']; }, $a_gateways),

	array_map(function($g){ return $g['name'] .' - '. $g['gateway']; }, $a_gateways)

);

$section->addInput(new Form_Select(

	'gateway',

	'Gateway',

	$pconfig['gateway'],

	$allGateways

))->setHelp('Choose which gateway this route applies to or <a href="'.

	'/system_gateways_edit.php">add a new one first</a>');

$section->addInput(new Form_Checkbox(

	'disabled',

	'Disabled',

	'Disable this static route',

	$pconfig['disabled']

))->setHelp('Set this option to disable this static route without removing it from '.

	'the list.');

$section->addInput(new Form_Input(

	'descr',

	'Description',

	'text',

	htmlspecialchars($pconfig['descr'])

))->setHelp('You may enter a description here for your reference (not parsed).');

$form->add($section);

print $form;

include("foot.inc");