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<?php
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/*
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	services_dnsmasq.php
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*/
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/* ====================================================================
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 *	Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.
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 *	Copyright (c)  2003-2004 Bob Zoller <bob@kludgebox.com> and Manuel Kasper <mk@neon1.net
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 *
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 *	Some or all of this file is based on the m0n0wall project which is
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 *	Copyright (c)  2004 Manuel Kasper (BSD 2 clause)
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 *
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 *	Redistribution and use in source and binary forms, with or without modification,
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 *	are permitted provided that the following conditions are met:
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 *
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 *	1. Redistributions of source code must retain the above copyright notice,
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 *		this list of conditions and the following disclaimer.
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 *
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 *	2. Redistributions in binary form must reproduce the above copyright
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 *		notice, this list of conditions and the following disclaimer in
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 *		the documentation and/or other materials provided with the
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 *		distribution.
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 *
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 *	3. All advertising materials mentioning features or use of this software
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 *		must display the following acknowledgment:
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 *		"This product includes software developed by the pfSense Project
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 *		 for use in the pfSense software distribution. (http://www.pfsense.org/).
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 *
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 *	4. The names "pfSense" and "pfSense Project" must not be used to
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 *		 endorse or promote products derived from this software without
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 *		 prior written permission. For written permission, please contact
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 *		 coreteam@pfsense.org.
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 *
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 *	5. Products derived from this software may not be called "pfSense"
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 *		nor may "pfSense" appear in their names without prior written
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 *		permission of the Electric Sheep Fencing, LLC.
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 *
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 *	6. Redistributions of any form whatsoever must retain the following
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 *		acknowledgment:
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 *
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 *	"This product includes software developed by the pfSense Project
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 *	for use in the pfSense software distribution (http://www.pfsense.org/).
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 *
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 *	THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
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 *	EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 *	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 *	PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR
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 *	ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 *	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 *	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 *	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 *	HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 *	STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 *	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 *	OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 *	====================================================================
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 *
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 */
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60
##|+PRIV
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##|*IDENT=page-services-dnsforwarder
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##|*NAME=Services: DNS Forwarder
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##|*DESCR=Allow access to the 'Services: DNS Forwarder' page.
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##|*MATCH=services_dnsmasq.php*
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##|-PRIV
66

    
67
require("guiconfig.inc");
68
require_once("functions.inc");
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require_once("filter.inc");
70
require_once("shaper.inc");
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require_once("system.inc");
72

    
73
$pconfig['enable'] = isset($config['dnsmasq']['enable']);
74
$pconfig['regdhcp'] = isset($config['dnsmasq']['regdhcp']);
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$pconfig['regdhcpstatic'] = isset($config['dnsmasq']['regdhcpstatic']);
76
$pconfig['dhcpfirst'] = isset($config['dnsmasq']['dhcpfirst']);
77
$pconfig['strict_order'] = isset($config['dnsmasq']['strict_order']);
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$pconfig['domain_needed'] = isset($config['dnsmasq']['domain_needed']);
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$pconfig['no_private_reverse'] = isset($config['dnsmasq']['no_private_reverse']);
80
$pconfig['port'] = $config['dnsmasq']['port'];
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$pconfig['custom_options'] = $config['dnsmasq']['custom_options'];
82

    
83
$pconfig['strictbind'] = isset($config['dnsmasq']['strictbind']);
84
if (!empty($config['dnsmasq']['interface'])) {
85
	$pconfig['interface'] = explode(",", $config['dnsmasq']['interface']);
86
} else {
87
	$pconfig['interface'] = array();
88
}
89

    
90
if (!is_array($config['dnsmasq']['hosts'])) {
91
	$config['dnsmasq']['hosts'] = array();
92
}
93

    
94
if (!is_array($config['dnsmasq']['domainoverrides'])) {
95
	$config['dnsmasq']['domainoverrides'] = array();
96
}
97

    
98
$a_hosts = &$config['dnsmasq']['hosts'];
99
$a_domainOverrides = &$config['dnsmasq']['domainoverrides'];
100

    
101
if ($_POST) {
102
	if ($_POST['apply']) {
103
		$retval = 0;
104
		$retval = services_dnsmasq_configure();
105
		$savemsg = get_std_save_message($retval);
106

    
107
		// Reload filter (we might need to sync to CARP hosts)
108
		filter_configure();
109
		/* Update resolv.conf in case the interface bindings exclude localhost. */
110
		system_resolvconf_generate();
111
		/* Start or restart dhcpleases when it's necessary */
112
		system_dhcpleases_configure();
113

    
114
		if ($retval == 0) {
115
			clear_subsystem_dirty('hosts');
116
		}
117
	} else {
118
		$pconfig = $_POST;
119
		unset($input_errors);
120

    
121
		$config['dnsmasq']['enable'] = ($_POST['enable']) ? true : false;
122
		$config['dnsmasq']['regdhcp'] = ($_POST['regdhcp']) ? true : false;
123
		$config['dnsmasq']['regdhcpstatic'] = ($_POST['regdhcpstatic']) ? true : false;
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		$config['dnsmasq']['dhcpfirst'] = ($_POST['dhcpfirst']) ? true : false;
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		$config['dnsmasq']['strict_order'] = ($_POST['strict_order']) ? true : false;
126
		$config['dnsmasq']['domain_needed'] = ($_POST['domain_needed']) ? true : false;
127
		$config['dnsmasq']['no_private_reverse'] = ($_POST['no_private_reverse']) ? true : false;
128
		$config['dnsmasq']['custom_options'] = str_replace("\r\n", "\n", $_POST['custom_options']);
129
		$config['dnsmasq']['strictbind'] = ($_POST['strictbind']) ? true : false;
130

    
131
		if (isset($_POST['enable']) && isset($config['unbound']['enable'])) {
132
			if ($_POST['port'] == $config['unbound']['port']) {
133
				$input_errors[] = "The DNS Resolver is enabled using this port. Choose a non-conflicting port, or disable DNS Resolver.";
134
			}
135
		}
136

    
137
		if ($_POST['port']) {
138
			if (is_port($_POST['port'])) {
139
				$config['dnsmasq']['port'] = $_POST['port'];
140
			} else {
141
				$input_errors[] = gettext("You must specify a valid port number");
142
			}
143
		} else if (isset($config['dnsmasq']['port'])) {
144
			unset($config['dnsmasq']['port']);
145
		}
146

    
147
		if (is_array($_POST['interface'])) {
148
			$config['dnsmasq']['interface'] = implode(",", $_POST['interface']);
149
		} elseif (isset($config['dnsmasq']['interface'])) {
150
			unset($config['dnsmasq']['interface']);
151
		}
152

    
153
		if ($config['dnsmasq']['custom_options']) {
154
			$args = '';
155
			foreach (preg_split('/\s+/', $config['dnsmasq']['custom_options']) as $c) {
156
				$args .= escapeshellarg("--{$c}") . " ";
157
			}
158
			exec("/usr/local/sbin/dnsmasq --test $args", $output, $rc);
159
			if ($rc != 0) {
160
				$input_errors[] = gettext("Invalid custom options");
161
			}
162
		}
163

    
164
		if (!$input_errors) {
165
			write_config();
166
			mark_subsystem_dirty('hosts');
167
		}
168
	}
169
}
170

    
171
if ($_GET['act'] == "del") {
172
	if ($_GET['type'] == 'host') {
173
		if ($a_hosts[$_GET['id']]) {
174
			unset($a_hosts[$_GET['id']]);
175
			write_config();
176
			mark_subsystem_dirty('hosts');
177
			header("Location: services_dnsmasq.php");
178
			exit;
179
		}
180
	} elseif ($_GET['type'] == 'doverride') {
181
		if ($a_domainOverrides[$_GET['id']]) {
182
			unset($a_domainOverrides[$_GET['id']]);
183
			write_config();
184
			mark_subsystem_dirty('hosts');
185
			header("Location: services_dnsmasq.php");
186
			exit;
187
		}
188
	}
189
}
190

    
191
function build_if_list() {
192
	$interface_addresses = get_possible_listen_ips(true);
193
	$iflist = array('options' => array(), 'selected' => array());
194

    
195
	$iflist['options'][""]	= "All";
196
	if (empty($pconfig['interface']) || empty($pconfig['interface'][0])) {
197
		array_push($iflist['selected'], "");
198
	}
199

    
200
	foreach ($interface_addresses as $laddr => $ldescr) {
201
		$iflist['options'][$laddr] = htmlspecialchars($ldescr);
202

    
203
		if ($pconfig['interface'] && in_array($laddr, $pconfig['interface'])) {
204
			array_push($iflist['selected'], $laddr);
205
		}
206
	}
207

    
208
	unset($interface_addresses);
209

    
210
	return($iflist);
211
}
212

    
213
$closehead = false;
214
$pgtitle = array(gettext("Services"), gettext("DNS Forwarder"));
215
$shortcut_section = "forwarder";
216
include("head.inc");
217

    
218
if ($input_errors) {
219
	print_input_errors($input_errors);
220
}
221

    
222
if ($savemsg) {
223
	print_info_box($savemsg, 'success');
224
}
225

    
226
if (is_subsystem_dirty('hosts')) {
227
	print_info_box_np(gettext("The DNS forwarder configuration has been changed") . ".<br />" . gettext("You must apply the changes in order for them to take effect."));
228
}
229

    
230
$form = new Form();
231

    
232
$section = new Form_Section('General DNS Forwarder Options');
233

    
234
$section->addInput(new Form_Checkbox(
235
	'enable',
236
	'Enable',
237
	'Enable DNS forwarder',
238
	$pconfig['enable']
239
))->toggles('.toggle-dhcp', 'disable');
240

    
241
$section->addInput(new Form_Checkbox(
242
	'regdhcp',
243
	'DHCP Registration',
244
	'Register DHCP leases in DNS forwarder',
245
	$pconfig['regdhcp']
246
))->setHelp(sprintf("If this option is set, then machines that specify".
247
			" their hostname when requesting a DHCP lease will be registered".
248
			" in the DNS forwarder, so that their name can be resolved.".
249
			" You should also set the domain in %sSystem:".
250
			" General setup%s to the proper value.",'<a href="system.php">','</a>'))
251
	->addClass('toggle-dhcp');
252

    
253
$section->addInput(new Form_Checkbox(
254
	'regdhcpstatic',
255
	'Static DHCP',
256
	'Register DHCP static mappings in DNS forwarder',
257
	$pconfig['regdhcpstatic']
258
))->setHelp(sprintf("If this option is set, then DHCP static mappings will ".
259
					"be registered in the DNS forwarder, so that their name can be ".
260
					"resolved. You should also set the domain in %s".
261
					"System: General setup%s to the proper value.",'<a href="system.php">','</a>'))
262
	->addClass('toggle-dhcp');
263

    
264
$section->addInput(new Form_Checkbox(
265
	'dhcpfirst',
266
	'Prefer DHCP',
267
	'Resolve DHCP mappings first',
268
	$pconfig['dhcpfirst']
269
))->setHelp(sprintf("If this option is set, then DHCP mappings will ".
270
					"be resolved before the manual list of names below. This only ".
271
					"affects the name given for a reverse lookup (PTR)."))
272
	->addClass('toggle-dhcp');
273

    
274
$group = new Form_Group('DNS Query Forwarding');
275

    
276
$group->add(new Form_Checkbox(
277
	'strict_order',
278
	'DNS Query Forwarding',
279
	'Query DNS servers sequentially',
280
	$pconfig['strict_order']
281
))->setHelp(sprintf("If this option is set, %s DNS Forwarder (dnsmasq) will ".
282
					"query the DNS servers sequentially in the order specified (<i>System - General Setup - DNS Servers</i>), ".
283
					"rather than all at once in parallel. ", $g['product_name']));
284

    
285
$group->add(new Form_Checkbox(
286
	'domain_needed',
287
	null,
288
	'Require domain',
289
	$pconfig['domain_needed']
290
))->setHelp(sprintf("If this option is set, %s DNS Forwarder (dnsmasq) will ".
291
					"not forward A or AAAA queries for plain names, without dots or domain parts, to upstream name servers.	 ".
292
					"If the name is not known from /etc/hosts or DHCP then a \"not found\" answer is returned. ", $g['product_name']));
293

    
294
$group->add(new Form_Checkbox(
295
	'no_private_reverse',
296
	null,
297
	'Do not forward private reverse lookups',
298
	$pconfig['no_private_reverse']
299
))->setHelp(sprintf("If this option is set, %s DNS Forwarder (dnsmasq) will ".
300
					"not forward reverse DNS lookups (PTR) for private addresses (RFC 1918) to upstream name servers.  ".
301
					"Any entries in the Domain Overrides section forwarding private \"n.n.n.in-addr.arpa\" names to a specific server are still forwarded. ".
302
					"If the IP to name is not known from /etc/hosts, DHCP or a specific domain override then a \"not found\" answer is immediately returned. ", $g['product_name']));
303

    
304
$section->add($group);
305

    
306
$section->addInput(new Form_Input(
307
	'port',
308
	'Listen Port',
309
	'number',
310
	$pconfig['port'],
311
	['placeholder' => '53']
312
))->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.');
313

    
314
$iflist = build_if_list();
315

    
316
$section->addInput(new Form_Select(
317
	'interface',
318
	'Interfaces',
319
	$iflist['selected'],
320
	$iflist['options'],
321
	true
322
))->setHelp('Interface IPs used by the DNS Forwarder 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. ' .
323
			'The default behavior is to respond to queries on every available IPv4 and IPv6 address.');
324

    
325
$section->addInput(new Form_Checkbox(
326
	'strictbind',
327
	'Strict binding',
328
	'Strict interface binding',
329
	$pconfig['strictbind']
330
))->setHelp('If this option is set, the DNS forwarder will only bind to the interfaces containing the IP addresses selected above, ' .
331
					'rather than binding to all interfaces and discarding queries to other addresses.' . '<br /><br />' .
332
					'This option does NOT work with IPv6. If set, dnsmasq will not bind to IPv6 addresses.');
333

    
334
$section->addInput(new Form_Textarea(
335
	'custom_options',
336
	'Custom options',
337
	$pconfig['custom_options']
338
))->setHelp('Enter any additional options you would like to add to the dnsmasq configuration here, separated by a space or newline')
339
	->addClass('advanced');
340

    
341
$form->add($section);
342
print($form);
343

    
344
print_info_box(sprintf("If the DNS forwarder is enabled, the DHCP".
345
	" service (if enabled) will automatically serve the LAN IP".
346
	" address as a DNS server to DHCP clients so they will use".
347
	" the forwarder. The DNS forwarder will use the DNS servers".
348
	" entered in %sSystem: General setup%s".
349
	" or those obtained via DHCP or PPP on WAN if the &quot;Allow".
350
	" DNS server list to be overridden by DHCP/PPP on WAN&quot;".
351
	" is checked. If you don't use that option (or if you use".
352
	" a static IP address on WAN), you must manually specify at".
353
	" least one DNS server on the %sSystem:".
354
	"General setup%s page.",'<a href="system.php">','</a>','<a href="system.php">','</a>'), info);
355
?>
356

    
357
<div class="panel panel-default">
358
	<div class="panel-heading"><h2 class="panel-title"><?=gettext("Host Overrides")?></h2></div>
359
	<div class="panel-body table-responsive">
360
		<table class="table table-striped table-hover table-condensed sortable-theme-bootstrap" data-sortable>
361
			<thead>
362
				<tr>
363
					<th><?=gettext("Host")?></th>
364
					<th><?=gettext("Domain")?></th>
365
					<th><?=gettext("IP")?></th>
366
					<th><?=gettext("Description")?></th>
367
					<th></th>
368
				</tr>
369
			</thead>
370
			<tbody>
371
<?php
372
foreach ($a_hosts as $i => $hostent):
373
?>
374
				<tr>
375
					<td>
376
						<?=$hostent['host']?>
377
					</td>
378
					<td>
379
						<?=$hostent['domain']?>
380
					</td>
381
					<td>
382
						<?=$hostent['ip']?>
383
					</td>
384
					<td>
385
						<?=htmlspecialchars($hostent['descr'])?>
386
					</td>
387
					<td>
388
						<a class="fa fa-pencil"	title="<?=gettext('Edit host override')?>" 	href="services_dnsmasq_edit.php?id=<?=$i?>"></a>
389
						<a class="fa fa-trash"	title="<?=gettext('Delete host override')?>"	href="services_dnsmasq.php?type=host&amp;act=del&amp;id=<?=$i?>"></a>
390
					</td>
391
				</tr>
392

    
393
<?php
394
	if ($hostent['aliases']['item'] && is_array($hostent['aliases']['item'])):
395
		foreach ($hostent['aliases']['item'] as $i => $alias):
396
?>
397
				<tr>
398
					<td>
399
						<?=$alias['host']?>
400
					</td>
401
					<td>
402
						<?=$alias['domain']?>
403
					</td>
404
					<td>
405
						Alias for <?=$hostent['host'] ? $hostent['host'] . '.' . $hostent['domain'] : $hostent['domain']?>
406
					</td>
407
					<td>
408
						<i class="fa fa-angle-double-right text-info"></i>
409
						<?=htmlspecialchars($alias['description'])?>
410
					</td>
411
					<td>
412
						<a class="fa fa-pencil"	title="<?=gettext('Edit host override')?>" 	href="services_dnsmasq_edit.php?id=<?=$i?>"></a>
413
					</td>
414
				</tr>
415
<?php
416
		endforeach;
417
	endif;
418
endforeach;
419
?>
420
			</tbody>
421
		</table>
422
	</div>
423
</div>
424

    
425
<nav class="action-buttons">
426
	<a href="services_dnsmasq_edit.php" class="btn btn-sm btn-success btn-sm">
427
		<i class="fa fa-plus icon-embed-btn"></i>
428
		<?=gettext('Add')?>
429
	</a>
430
</nav>
431

    
432
<?php
433
print_info_box(gettext("Entries in this section override individual results from the forwarders.") .
434
				gettext("Use these for changing DNS results or for adding custom DNS records."), info);
435
?>
436

    
437
<div class="panel panel-default">
438
	<div class="panel-heading"><h2 class="panel-title"><?=gettext("Domain Overrides")?></h2></div>
439
	<div class="panel-body table-responsive">
440
		<table class="table table-striped table-hover table-condensed sortable-theme-bootstrap" data-sortable>
441
			<thead>
442
				<tr>
443
					<th><?=gettext("Domain")?></th>
444
					<th><?=gettext("IP")?></th>
445
					<th><?=gettext("Description")?></th>
446
					<th></th>
447
				</tr>
448
			</thead>
449

    
450
			<tbody>
451
<?php
452
foreach ($a_domainOverrides as $i => $doment):
453
?>
454
				<tr>
455
					<td>
456
						<?=$doment['domain']?>
457
					</td>
458
					<td>
459
						<?=$doment['ip']?>
460
					</td>
461
					<td>
462
						<?=htmlspecialchars($doment['descr'])?>
463
					</td>
464
					<td>
465
						<a class="fa fa-pencil"	title="<?=gettext('Edit domain override')?>" href="services_dnsmasq_domainoverride_edit.php?id=<?=$i?>"></a>
466
						<a class="fa fa-trash"	title="<?=gettext('Delete domain override')?>" href="services_dnsmasq.php?act=del&amp;type=doverride&amp;id=<?=$i?>"></a>
467
					</td>
468
				</tr>
469
<?php
470
endforeach;
471
?>
472
			</tbody>
473
		</table>
474
	</div>
475
</div>
476

    
477
<nav class="action-buttons">
478
	<a href="services_dnsmasq_domainoverride_edit.php" class="btn btn-sm btn-success btn-sm">
479
		<i class="fa fa-plus icon-embed-btn"></i>
480
		<?=gettext('Add')?>
481
	</a>
482
</nav>
483

    
484
<script type="text/javascript">
485
//<![CDATA[
486
events.push(function() {
487
	// On clicking the "Apply" button, submit the main form, not the little form the button lives in
488
//	$('[name=apply]').prop('type', 'button');
489

    
490
//    $('[name=apply]').click(function() {
491
//        $('form:last').submit();
492
//    });
493
// });
494
//]]>
495
</script>
496
<?php
497
print_info_box(gettext("Entries in this area override an entire domain, and subdomains, by specifying an".
498
						" authoritative DNS server to be queried for that domain."), info);
499

    
500
include("foot.inc");
(124-124/228)