<?php
/*
	firewall_nat.php
*/
/* ====================================================================
 *	Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.
 *
 *	Some or all of this file is based on the m0n0wall project which is
 *	Copyright (c)  2004 Manuel Kasper (BSD 2 clause)
 *
 *	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: nat
*/

##|+PRIV
##|*IDENT=page-firewall-nat-portforward
##|*NAME=Firewall: NAT: Port Forward
##|*DESCR=Allow access to the 'Firewall: NAT: Port Forward' page.
##|*MATCH=firewall_nat.php*
##|-PRIV

require("guiconfig.inc");
require_once("functions.inc");
require_once("filter.inc");
require_once("shaper.inc");
require_once("itemid.inc");

if (!is_array($config['nat']['rule'])) {
	$config['nat']['rule'] = array();
}

$a_nat = &$config['nat']['rule'];

/* update rule order, POST[rule] is an array of ordered IDs */
if(array_key_exists('order-store', $_POST)) {
	if (is_array($_POST['rule']) && !empty($_POST['rule'])) {
		$a_nat_new = array();

		// if a rule is not in POST[rule], it has been deleted by the user
		foreach ($_POST['rule'] as $id)
			$a_nat_new[] = $a_nat[$id];

		$a_nat = $a_nat_new;

		if (write_config())
			mark_subsystem_dirty('filter');

		header("Location: firewall_nat.php");
		exit;
	}
}

/* if a custom message has been passed along, lets process it */
if ($_GET['savemsg']) {
	$savemsg = $_GET['savemsg'];
}

if ($_POST) {
	$pconfig = $_POST;

	if ($_POST['apply']) {

		$retval = 0;

		$retval |= filter_configure();
		$savemsg = get_std_save_message($retval);

		pfSense_handle_custom_code("/usr/local/pkg/firewall_nat/apply");

		if ($retval == 0) {
			clear_subsystem_dirty('natconf');
			clear_subsystem_dirty('filter');
		}

	}
}

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

		if (isset($a_nat[$_GET['id']]['associated-rule-id'])) {
			delete_id($a_nat[$_GET['id']]['associated-rule-id'], $config['filter']['rule']);
			$want_dirty_filter = true;
		}
		unset($a_nat[$_GET['id']]);

		if (write_config()) {
			mark_subsystem_dirty('natconf');
			if ($want_dirty_filter) {
				mark_subsystem_dirty('filter');
			}
		}

		header("Location: firewall_nat.php");
		exit;
	}
}

if (isset($_POST['del_x'])) {
	/* delete selected rules */
	if (is_array($_POST['rule']) && count($_POST['rule'])) {
		foreach ($_POST['rule'] as $rulei) {
		$target = $rule['target'];
			// Check for filter rule associations
			if (isset($a_nat[$rulei]['associated-rule-id'])) {
				delete_id($a_nat[$rulei]['associated-rule-id'], $config['filter']['rule']);

				mark_subsystem_dirty('filter');
			}

			unset($a_nat[$rulei]);
		}

		if (write_config()) {
			mark_subsystem_dirty('natconf');
		}

		header("Location: firewall_nat.php");
		exit;
	}
}

$closehead = false;
$pgtitle = array(gettext("Firewall"), gettext("NAT"), gettext("Port Forward"));
include("head.inc");

if ($savemsg)
	print_info_box($savemsg, 'success');

if (is_subsystem_dirty('natconf'))
	print_info_box_np(gettext('The NAT configuration has been changed.') . '<br />' .
					  gettext('You must apply the changes in order for them to take effect.') . '<br />');

$tab_array = array();
$tab_array[] = array(gettext("Port Forward"), true, "firewall_nat.php");
$tab_array[] = array(gettext("1:1"), false, "firewall_nat_1to1.php");
$tab_array[] = array(gettext("Outbound"), false, "firewall_nat_out.php");
$tab_array[] = array(gettext("NPt"), false, "firewall_nat_npt.php");
display_top_tabs($tab_array);
?>

<form action="firewall_nat.php" method="post" name="iform">
	<div class="panel panel-default">
		<div class="panel-heading"><?=gettext('Rules')?></div>
		<div class="panel-body table-responsive">
			<table class="table table-striped table-hover table-condensed">
				<thead>
					<tr>
						<th><!-- Checkbox --></th>
						<th><!-- Rule type --></th>
						<th><?=gettext("If")?></th>
						<th><?=gettext("Proto")?></th>
						<th><?=gettext("Src. addr")?></th>
						<th><?=gettext("Src. ports")?></th>
						<th><?=gettext("Dest. addr")?></th>
						<th><?=gettext("Dest. ports")?></th>
						<th><?=gettext("NAT IP")?></th>
						<th><?=gettext("NAT Ports")?></th>
						<th><?=gettext("Description")?></th>
						<th><?=gettext("Actions")?></th>
					</tr>
				</thead>
				<tbody class='user-entries'>
<?php

$nnats = $i = 0;

foreach ($a_nat as $natent):

	$alias = rule_columns_with_alias(
		$natent['source']['address'],
		pprint_port($natent['source']['port']),
		$natent['destination']['address'],
		pprint_port($natent['destination']['port'])
	);

	/* if user does not have access to edit an interface skip on to the next record */
	if (!have_natpfruleint_access($natent['interface']))
		continue;
?>

					<tr id="fr<?=$nnats;?>" onClick="fr_toggle(<?=$nnats;?>)" ondblclick="document.location='firewall_nat_edit.php?id=<?=$i;?>';">
						<td >
							<input type="checkbox" id="frc<?=$nnats;?>" onClick="fr_toggle(<?=$nnats;?>)" name="rule[]" value="<?=$i;?>"/>
						</td>
						<td>
<?php
	if ($natent['associated-rule-id'] == "pass"):
?>
							<i class="fa fa-play" title="<?=gettext("All traffic matching this NAT entry is passed")?>"></i>
<?php
	elseif (!empty($natent['associated-rule-id'])):
?>
							<i class="fa fa-random" title="<?=gettext("Firewall rule ID ")?><?=htmlspecialchars($natent['associated-rule-id'])?> . <?=gettext('is managed by this rule')?>"></i>
<?php
	endif;
?>
						</td>
						<td>
							<?=$textss?>
<?php
	if (!$natent['interface'])
		echo htmlspecialchars(convert_friendly_interface_to_friendly_descr("wan"));
	else
		echo htmlspecialchars(convert_friendly_interface_to_friendly_descr($natent['interface']));
?>
							<?=$textse?>
						</td>

						<td>
							<?=$textss?><?=strtoupper($natent['protocol'])?><?=$textse?>
						</td>

						<td>


<?php
	if (isset($alias['src'])):
?>
							<a href="/firewall_aliases_edit.php?id=<?=$alias['src']?>" data-toggle="popover" data-trigger="hover focus" title="Alias details" data-content="<?=alias_info_popup($alias['src'])?>" data-html="true">
<?php
	endif;
?>
							<?=htmlspecialchars(pprint_address($natent['source']))?>
<?php
	if (isset($alias['src'])):
?>
							<i class='fa fa-pencil'></i></a>
<?php
	endif;
?>
						</td>
						<td>
<?php
	if (isset($alias['srcport'])):
?>
							<a href="/firewall_aliases_edit.php?id=<?=$alias['srcport']?>" data-toggle="popover" data-trigger="hover focus" title="Alias details" data-content="<?=alias_info_popup($alias['srcport'])?>" data-html="true">
<?php
	endif;
?>
							<?=htmlspecialchars(pprint_port($natent['source']['port']))?>
<?php
	if (isset($alias['srcport'])):
?>
							<i class='fa fa-pencil'></i></a>
<?php
	endif;
?>
						</td>

						<td>
<?php
	if (isset($alias['dst'])):
?>
							<a href="/firewall_aliases_edit.php?id=<?=$alias['dst']?>" data-toggle="popover" data-trigger="hover focus" title="Alias details" data-content="<?=alias_info_popup($alias['dst'])?>" data-html="true">
<?php
	endif;
?>
							<?=htmlspecialchars(pprint_address($natent['destination']))?>
<?php
	if (isset($alias['dst'])):
?>
							<i class='fa fa-pencil'></i></a>
<?php
	endif;
?>
						</td>
						<td>
<?php
	if (isset($alias['dstport'])):
?>
							<a href="/firewall_aliases_edit.php?id=<?=$alias['dstport']?>" data-toggle="popover" data-trigger="hover focus" title="Alias details" data-content="<?=alias_info_popup($alias['dstport'])?>" data-html="true">
<?php
	endif;
?>
							<?=htmlspecialchars(pprint_port($natent['destination']['port']))?>
<?php
	if (isset($alias['dstport'])):
?>
							<i class='fa fa-pencil'></i></a>
<?php
	endif;
?>
						</td>

						<td >
							<?=htmlspecialchars($natent['target'])?>
						</td>
						<td>
<?php
	$localport = $natent['local-port'];

	list($dstbeginport, $dstendport) = explode("-", $natent['destination']['port']);

	if ($dstendport) {
		$localendport = $natent['local-port'] + $dstendport - $dstbeginport;
		$localport	 .= '-' . $localendport;
	}
?>
							<?=htmlspecialchars(pprint_port($localport))?>
						</td>

						<td>
							<?=htmlspecialchars($natent['descr'])?>
						</td>
						<td>
							<a class="fa fa-pencil" title="<?=gettext("Edit rule"); ?>" href="firewall_nat_edit.php?id=<?=$i?>"></a>
							<a class="fa fa-clone"	  title="<?=gettext("Add a new NAT based on this one")?>" href="firewall_nat_edit.php?dup=<?=$i?>"></a>
							<a class="fa fa-trash"	title="<?=gettext("Delete rule")?>" href="firewall_nat.php?act=del&amp;id=<?=$i?>"></a>
						</td>
					</tr>
<?php
	$i++;
	$nnats++;
endforeach;
?>
				</tbody>
			</table>
		</div>
	</div>

	<nav class="action-buttons">
		<a href="firewall_nat_edit.php?after=-1" class="btn btn-sm btn-success" title="<?=gettext('Add rule to the top of the list')?>">
			<i class="fa fa-level-up icon-embed-btn"></i>
			<?=gettext('Add')?>
		</a>
		<a href="firewall_nat_edit.php" class="btn btn-sm btn-success" title="<?=gettext('Add rule to the end of the list')?>">
			<i class="fa fa-level-down icon-embed-btn"></i>
			<?=gettext('Add')?>
		</a>
		<button name="del_x" type="submit" class="btn btn-danger btn-sm" title="<?=gettext('Delete selected rules')?>">
			<i class="fa fa-trash icon-embed-btn"></i>
			<?=gettext("Delete"); ?>
		</button>
		<button type="submit" id="order-store" name="order-store" class="btn btn-primary btn-sm" disabled title="<?=gettext('Save rule order')?>">
			<i class="fa fa-save icon-embed-btn"></i>
			<?=gettext("Save")?>
		</button>
	</nav>
</form>

<script type="text/javascript">
//<![CDATA[
events.push(function() {

	// Make rules sortable
	$('table tbody.user-entries').sortable({
		cursor: 'grabbing',
		update: function(event, ui) {
			$('#order-store').removeAttr('disabled');
		}
	});

	// Check all of the rule checkboxes so that their values are posted
	$('#order-store').click(function () {
	   $('[id^=frc]').prop('checked', true);
	});
});
//]]>
</script>
<?php

if (count($a_nat) > 0) {
?>
<!-- Legend -->
<div>
	<dl class="dl-horizontal responsive">
		<dt><?=gettext('Legend')?></dt>					<dd></dd>
		<dt><i class="fa fa-play"></i></dt>			<dd><?=gettext('Pass')?></dd>
		<dt><i class="fa fa-random"></i></dt>		<dd><?=gettext('Linked rule')?></dd>
	</dl>
</div>

<?php
}

include("foot.inc");