pfSense

<?php

/* $Id$ */

/*

	services_unbound.php

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

	Copyright (C) 2014	Warren Baker (warren@pfsense.org)

	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: dnsresolver

*/

##|+PRIV

##|*IDENT=page-services-unbound

##|*NAME=Services: DNS Resolver page

##|*DESCR=Allow access to the 'Services: DNS Resolver' page.

##|*MATCH=services_unbound.php*

##|-PRIV

require_once("guiconfig.inc");

require_once("unbound.inc");

require_once("system.inc");

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

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

}

$a_unboundcfg =& $config['unbound'];

if (!is_array($config['unbound']['hosts'])) {

	$config['unbound']['hosts'] = array();

}

$a_hosts =& $config['unbound']['hosts'];

if (!is_array($config['unbound']['domainoverrides'])) {

	$config['unbound']['domainoverrides'] = array();

}

$a_domainOverrides = &$config['unbound']['domainoverrides'];

if (isset($config['unbound']['enable'])) {

	$pconfig['enable'] = true;

}

if (isset($config['unbound']['dnssec'])) {

	$pconfig['dnssec'] = true;

}

if (isset($config['unbound']['forwarding'])) {

	$pconfig['forwarding'] = true;

}

if (isset($config['unbound']['regdhcp'])) {

	$pconfig['regdhcp'] = true;

}

if (isset($config['unbound']['regdhcpstatic'])) {

	$pconfig['regdhcpstatic'] = true;

}

if (isset($config['unbound']['txtsupport'])) {

	$pconfig['txtsupport'] = true;

}

$pconfig['port'] = $config['unbound']['port'];

$pconfig['custom_options'] = base64_decode($config['unbound']['custom_options']);

if (empty($config['unbound']['active_interface'])) {

	$pconfig['active_interface'] = array();

} else {

	$pconfig['active_interface'] = explode(",", $config['unbound']['active_interface']);

}

if (empty($config['unbound']['outgoing_interface'])) {

	$pconfig['outgoing_interface'] = array();

} else {

	$pconfig['outgoing_interface'] = explode(",", $config['unbound']['outgoing_interface']);

}

if ($_POST) {

	$pconfig = $_POST;

	unset($input_errors);

	if ($_POST['apply']) {

		$retval = services_unbound_configure();

		$savemsg = get_std_save_message($retval);

		if ($retval == 0) {

			clear_subsystem_dirty('unbound');

		}

		/* Update resolv.conf in case the interface bindings exclude localhost. */

		system_resolvconf_generate();

		/* Start or restart dhcpleases when it's necessary */

		system_dhcpleases_configure();

	} else {

		if (isset($_POST['enable']) && isset($config['dnsmasq']['enable'])) {

			if ($_POST['port'] == $config['dnsmasq']['port']) {

				$input_errors[] = "The DNS Forwarder is enabled using this port. Choose a non-conflicting port, or disable the DNS Forwarder.";

			}

		}

		if (empty($_POST['active_interface'])) {

			$input_errors[] = "One or more Network Interfaces must be selected for binding.";

		} else if (!isset($config['system']['dnslocalhost']) && (!in_array("lo0", $_POST['active_interface']) && !in_array("all", $_POST['active_interface']))) {

			$input_errors[] = "This system is configured to use the DNS Resolver as its DNS server, so Localhost or All must be selected in Network Interfaces.";

		}

		if (empty($_POST['outgoing_interface'])) {

			$input_errors[] = "One or more Outgoing Network Interfaces must be selected.";

		}

		if ($_POST['port']) {

			if (is_port($_POST['port'])) {

				$a_unboundcfg['port'] = $_POST['port'];

			} else {

				$input_errors[] = gettext("You must specify a valid port number.");

			}

		} else if (isset($config['unbound']['port'])) {

			unset($config['unbound']['port']);

		}

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

			$a_unboundcfg['enable'] = true;

		} else {

			unset($a_unboundcfg['enable']);

		}

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

			$a_unboundcfg['dnssec'] = true;

		} else {

			unset($a_unboundcfg['dnssec']);

		}

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

			$a_unboundcfg['forwarding'] = true;

		} else {

			unset($a_unboundcfg['forwarding']);

		}

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

			$a_unboundcfg['regdhcp'] = true;

		} else {

			unset($a_unboundcfg['regdhcp']);

		}

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

			$a_unboundcfg['regdhcpstatic'] = true;

		} else {

			unset($a_unboundcfg['regdhcpstatic']);

		}

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

			$a_unboundcfg['txtsupport'] = true;

		} else {

			unset($a_unboundcfg['txtsupport']);

		}

		if (is_array($_POST['active_interface']) && !empty($_POST['active_interface'])) {

			$a_unboundcfg['active_interface'] = implode(",", $_POST['active_interface']);

		}

		if (is_array($_POST['outgoing_interface']) && !empty($_POST['outgoing_interface'])) {

			$a_unboundcfg['outgoing_interface'] = implode(",", $_POST['outgoing_interface']);

		}

		$a_unboundcfg['custom_options'] = base64_encode(str_replace("\r\n", "\n", $_POST['custom_options']));

		if (!$input_errors) {

			write_config("DNS Resolver configured.");

			mark_subsystem_dirty('unbound');

		}

	}

}

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

	if ($_GET['type'] == 'host') {

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

			unset($a_hosts[$_GET['id']]);

			write_config();

			mark_subsystem_dirty('unbound');

			header("Location: services_unbound.php");

			exit;

		}

	} elseif ($_GET['type'] == 'doverride') {

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

			unset($a_domainOverrides[$_GET['id']]);

			write_config();

			mark_subsystem_dirty('unbound');

			header("Location: services_unbound.php");

			exit;

		}

	}

}

function build_if_list() {

	$interface_addresses = get_possible_listen_ips(true);

	$iflist = array('options' => array(), 'selected' => array());

	$iflist['options']['all']	= "All";

	if (empty($pconfig['interface']) || empty($pconfig['interface'][0]))

		array_push($iflist['selected'], "all");

	foreach ($interface_addresses as $laddr => $ldescr) {

		$iflist['options'][$laddr] = htmlspecialchars($ldescr);

		if ($pconfig['interface'] && in_array($laddr, $pconfig['interface']))

			array_push($iflist['selected'], $laddr);

	}

	unset($interface_addresses);

	return($iflist);

}

$closehead = false;

$pgtitle = array(gettext("Services"), gettext("DNS Resolver"));

$shortcut_section = "resolver";

include_once("head.inc");

if ($input_errors)

	print_input_errors($input_errors);

if ($savemsg)

	print_info_box($savemsg, 'success');

$tab_array = array();

$tab_array[] = array(gettext("General settings"), true, "services_unbound.php");

$tab_array[] = array(gettext("Advanced settings"), false, "services_unbound_advanced.php");

$tab_array[] = array(gettext("Access Lists"), false, "/services_unbound_acls.php");

display_top_tabs($tab_array, true);

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

$form = new Form();

$section = new Form_Section('General DNS Resolver Options');

$section->addInput(new Form_Checkbox(

	'enable',

	'Enable',

	'Enable DNS resolver',

	$pconfig['enable']

));

$section->addInput(new Form_Input(

	'port',

	'Listen Port',

	'text',

	$pconfig['port']

))->setHelp('The port used for responding to DNS queries. It should normally be left blank unless another service needs to bind to TCP/UDP port 53.');

$iflist = build_if_list();

$section->addInput(new Form_Select(

	'active_interface',

	'Network Interfaces',

	$iflist['selected'],

	$iflist['options'],

	true

))->setHelp('Interface IPs used by the DNS Resolver for responding to queries from clients. If an interface has both IPv4 and IPv6 IPs, both are used. Queries to other interface IPs not selected below are discarded. ' .

			'The default behavior is to respond to queries on every available IPv4 and IPv6 address.');

$section->addInput(new Form_Select(

	'outgoing_interface',

	'Outgoing Network Interfaces',

	$iflist['selected'],

	$iflist['options'],

	true

))->setHelp('Utilize different network interface(s) that the DNS Resolver will use to send queries to authoritative servers and receive their replies. By default all interfaces are used.');

$section->addInput(new Form_Checkbox(

	'dnssec',

	'DNSSEC',

	'Enable DNSSEC Support',

	$pconfig['dnssec']

));

$section->addInput(new Form_Checkbox(

	'forwarding',

	'DNS Query Forwarding',

	'Enable Forwarding Mode',

	$pconfig['forwarding']

));

$section->addInput(new Form_Checkbox(

	'regdhcp',

	'DHCP Registration',

	'Register DHCP leases in the DNS Resolver',

	$pconfig['regdhcp']

))->setHelp(sprintf('If this option is set, then machines that specify their hostname when requesting a DHCP lease will be registered'.

					' in the DNS Resolver, so that their name can be resolved.'.

					' You should also set the domain in %sSystem: General setup%s to the proper value.','<a href="system.php">','</a>'));

$section->addInput(new Form_Checkbox(

	'regdhcpstatic',

	'Static DHCP',

	'Register DHCP static mappings in the DNS Resolver',

	$pconfig['regdhcpstatic']

))->setHelp(sprintf('If this option is set, then DHCP static mappings will be registered in the DNS Resolver, so that their name can be '.

					'resolved. You should also set the domain in %s'.

					'System: General setup%s to the proper value.','<a href="system.php">','</a>'));

$section->addInput(new Form_Checkbox(

	'txtsupport',

	'TXT Comment Support',

	'Register DHCP static mappings in the DNS Resolver',

	$pconfig['txtsupport']

))->setHelp('Any descriptions associated with Host entries and DHCP Static mappings will create a corresponding TXT record.');

$btnadvdns = new Form_Button(

	'btnadvdns',

	'Advanced'

);

$btnadvdns->removeClass('btn-primary')->addClass('btn-default btn-sm');

$section->addInput(new Form_StaticText(

	'Advanced',

	$btnadvdns . ' ' . 'Show advanced optionss'

));

$section->addInput(new Form_TextArea (

	'custom_options',

	'Custom options',

	$pconfig['custom_options']

))->setHelp('Enter any additional configuration parameters to add to the DNS Resolver configuration here, separated by a newline');

$form->add($section);

print($form);

print_info_box(sprintf(gettext("If the DNS Resolver is enabled, the DHCP".

" service (if enabled) will automatically serve the LAN IP".

" address as a DNS server to DHCP clients so they will use".

" the DNS Resolver. If Forwarding, is enabled, the DNS Resolver will use the DNS servers".

" entered in %sSystem: General setup%s".

" or those obtained via DHCP or PPP on WAN if the "Allow".

" DNS server list to be overridden by DHCP/PPP on WAN"".

" is checked."),'<a href="system.php">','</a>'));

?>

<script>

//<![CDATA[

events.push(function(){

	// Hides the <div> in which the specified input element lives so that the input, its label and help text are hidden

	function hideInput(id, hide) {

		if(hide)

			$('#' + id).parent().parent('div').addClass('hidden');

		else

			$('#' + id).parent().parent('div').removeClass('hidden');

	}

	// Disables the specified input element

	function disableInput(id, disable) {

		$('#' + id).prop("disabled", disable);

	}

	// If hte enable checkbox is not checked, disable the next three checkboxes

	function disableDHCP() {

		var hide = ! $('#enable').prop('checked');

		disableInput('port', hide);

		disableInput('active_interface', hide);

		disableInput('outgoing_interface', hide);

		disableInput('regdhcpstatic', hide);

		disableInput('dnssec', hide);

		disableInput('forwarding', hide);

		disableInput('regdhcp', hide);

		disableInput('regdhcpstatic', hide);

		disableInput('txtsupport', hide);

		disableInput('btnadvdns', hide);

	}

	// Make the ‘aditional options’ button a plain button, not a submit button

	$("#btnadvdns").prop('type','button');

	// Un-hide aditional  controls

	$("#btnadvdns").click(function() {

		hideInput('custom_options', false);

	});

	// When 'enable' is clicked, diable/enable the following three checkboxes

	$('#enable').click(function() {

		disableDHCP();

	});

	// On initial load

	hideInput('custom_options', true);

	disableDHCP();

});

//]]>

</script>

<div class="panel panel-default">

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

	<div class="panel-body table-responsive">

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

			<thead>

				<tr>

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

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

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

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

					<th></th>

				</tr>

			</thead>

			<tbody>

<?php

$i = 0;

foreach ($a_hosts as $hostent):

?>

				<tr>

					<td>

						<?=strtolower($hostent['host'])?>

					</td>

					<td>

						<?=strtolower($hostent['domain'])?>

					</td>

					<td>

						<?=$hostent['ip']?>&nbsp;

					</td>

					<td>

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

					</td>

					<td>

						<a href="services_dnsmasq_edit.php?id=<?=$i?>" class="btn btn-xs btn-info"><?=gettext('Edit')?></a>

						<a href="services_dnsmasq.php?type=host&amp;act=del&amp;id=<?=$i?>" class="btn btn-xs btn-danger"><?=gettext('Delete')?></a>

					</td>

				</tr>

<?php

	if ($hostent['aliases']['item'] && is_array($hostent['aliases']['item'])):

		foreach ($hostent['aliases']['item'] as $alias):

?>

				<tr>

					<td>

						<?=strtolower($alias['host'])?>

					</td>

					<td>

						<?=strtolower($alias['domain'])?>

					</td>

					<td>

						Alias for <?=$hostent['host'] ? $hostent['host'] . '.' . $hostent['domain'] : $hostent['domain']?>

					</td>

					<td>

						<?=htmlspecialchars($alias['description'])?>

					</td>

					<td>

						<a href="services_dnsmasq_edit.php?id=<?=$i?>" class="btn btn-xs btn-info"><?=gettext('Edit')?></a>

					</td>

				</tr>

<?php

		endforeach;

	endif;

	$i++;

endforeach;

?>

			</tbody>

		</table>

	</div>

</div>

<nav class="action-buttons">

	<a href="services_dnsmasq_edit.php" class="btn btn-sm btn-success"><?=gettext('Add')?></a>

</nav>

<div class="panel panel-default">

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

	<div class="panel-body table-responsive">

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

			<thead>

				<tr>

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

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

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

					<th></th>

				</tr>

			</thead>

			<tbody>

<?php

$i = 0;

foreach ($a_domainOverrides as $doment):

?>

				<tr>

					<td>

						<?=strtolower($doment['domain'])?>&nbsp;

					</td>

					<td>

						<?=$doment['ip']?>&nbsp;

					</td>

					<td>

						<?=htmlspecialchars($doment['descr'])?>&nbsp;

					</td>

					<td>

						<a href="services_unbound_domainoverride_edit.php?id=<?=$i?>" class="btn btn-xs btn-info"><?=gettext('Edit')?></a>

						<a href="services_unbound.php?act=del&amp;type=doverride&amp;id=<?=$i?>" class="btn btn-xs btn-danger"><?=gettext('Delete')?></a>

					</td>

				</tr>

<?php

	$i++;

endforeach;

?>

			</tbody>

		</table>

	</div>

</div>

<nav class="action-buttons">

	<a href="services_unbound_domainoverride_edit.php" class="btn btn-sm btn-success"><?=gettext('Add')?></a>

</nav>

<?php include("foot.inc");