<?php
/*
 * services_dnsmasq_domainoverride_edit.php
 *
 * part of pfSense (https://www.pfsense.org)
 * Copyright (c) 2004-2016 Electric Sheep Fencing, LLC
 * Copyright (c) 2003-2004 Bob Zoller <bob@kludgebox.com>
 * All rights reserved.
 *
 * originally based on m0n0wall (http://m0n0.ch/wall)
 * Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
 * 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.
 *
 * 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.
 */

##|+PRIV
##|*IDENT=page-services-dnsforwarder-editdomainoverride
##|*NAME=Services: DNS Forwarder: Edit Domain Override
##|*DESCR=Allow access to the 'Services: DNS Forwarder: Edit Domain Override' page.
##|*MATCH=services_dnsmasq_domainoverride_edit.php*
##|-PRIV

require_once("guiconfig.inc");

if (!is_array($config['dnsmasq']['domainoverrides'])) {
	   $config['dnsmasq']['domainoverrides'] = array();
}

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

if (is_numericint($_GET['id'])) {
	$id = $_GET['id'];
}
if (isset($_POST['id']) && is_numericint($_POST['id'])) {
	$id = $_POST['id'];
}

if (isset($id) && $a_domainOverrides[$id]) {
	$pconfig['domain'] = $a_domainOverrides[$id]['domain'];
	if (is_ipaddr($a_domainOverrides[$id]['ip']) && ($a_domainOverrides[$id]['ip'] != '#')) {
		$pconfig['ip'] = $a_domainOverrides[$id]['ip'];
	} else {
		$dnsmasqpieces = explode('@', $a_domainOverrides[$id]['ip'], 2);
		$pconfig['ip'] = $dnsmasqpieces[0];
		$pconfig['dnssrcip'] = $dnsmasqpieces[1];
	}
	$pconfig['descr'] = $a_domainOverrides[$id]['descr'];
}

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

		/* input validation */
		$reqdfields = explode(" ", "domain ip");
		$reqdfieldsn = array(gettext("Domain"), gettext("IP address"));

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

		function String_Begins_With($needle, $haystack) {
			return (substr($haystack, 0, strlen($needle)) == $needle);
		}

		if (String_Begins_With(_msdcs, $_POST['domain'])) {
			$subdomainstr = substr($_POST['domain'], 7);

			if ($subdomainstr && !is_domain($subdomainstr)) {
				$input_errors[] = gettext("A valid domain must be specified after _msdcs.");
			}
		} elseif ($_POST['domain'] && !is_domain($_POST['domain'])) {
			$input_errors[] = gettext("A valid domain must be specified.");
		}

		if ($_POST['ip'] && !is_ipaddr($_POST['ip']) && ($_POST['ip'] != '#') && ($_POST['ip'] != '!')) {
			$input_errors[] = gettext("A valid IP address must be specified, or # for an exclusion or ! to not forward at all.");
		}

		if ($_POST['dnssrcip'] && !in_array($_POST['dnssrcip'], get_configured_ip_addresses())) {
			$input_errors[] = gettext("An interface IP address must be specified for the DNS query source.");
		}

		if (!$input_errors) {
			$doment = array();
			$doment['domain'] = $_POST['domain'];

			if (empty($_POST['dnssrcip'])) {
				$doment['ip'] = $_POST['ip'];
			} else {
				$doment['ip'] = $_POST['ip'] . "@" . $_POST['dnssrcip'];
			}

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

		if (isset($id) && $a_domainOverrides[$id]) {
			$a_domainOverrides[$id] = $doment;
		} else {
			$a_domainOverrides[] = $doment;
		}

		$retval = services_dnsmasq_configure();

		write_config();

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

$pgtitle = array(gettext("Services"), gettext("DNS Forwarder"), gettext("Edit Domain Override"));
$shortcut_section = "forwarder";
include("head.inc");

if ($input_errors) {
	print_input_errors($input_errors);
}

$form = new Form();

$section = new Form_Section('Domain Override Options');

$section->addInput(new Form_Input(
	'domain',
	'Domain',
	'text',
	$pconfig['domain']
))->setHelp('Domain to override (NOTE: this does not have to be a valid TLD!)' . '<br />' .
			'e.g.: test or mycompany.localdomain or 1.168.192.in-addr.arpa');

$section->addInput(new Form_IpAddress(
	'ip',
	'IP Address',
	$pconfig['ip']
))->setPattern('[a-f0-9:.#!]*')
  ->setHelp('IP address of the authoritative DNS server for this domain' . '<br />' .
			'e.g.: 192.168.100.100' . '<br />' .
			'Or enter # for an exclusion to pass through this host/subdomain to standard nameservers instead of a previous override.' . '<br />' .
			'Or enter ! for lookups for this host/subdomain to NOT be forwarded anywhere.');

$section->addInput(new Form_IpAddress(
	'dnssrcip',
	'Source IP',
	$pconfig['dnssrcip']
))->setHelp('Source IP address for queries to the DNS server for the override domain. Leave blank unless the DNS server is accessed through a VPN tunnel.');

$section->addInput(new Form_Input(
	'descr',
	'Description',
	'text',
	$pconfig['descr']
))->setHelp('A description may be entered here for administrative reference (not parsed).');

if (isset($id) && $a_domainOverrides[$id]) {
	$section->addInput(new Form_Input(
		'id',
		null,
		'hidden',
		$pconfig['id']
	));
}

$form->add($section);
print($form);

include("foot.inc");