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<?php
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/*
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	system.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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 *
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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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/*
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	pfSense_BUILDER_BINARIES:	/bin/kill	/usr/bin/tar
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	pfSense_MODULE: system
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*/
62

    
63
##|+PRIV
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##|*IDENT=page-system-generalsetup
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##|*NAME=System: General Setup page
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##|*DESCR=Allow access to the 'System: General Setup' page.
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##|*MATCH=system.php*
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##|-PRIV
69

    
70
require("guiconfig.inc");
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require_once("functions.inc");
72
require_once("filter.inc");
73
require_once("shaper.inc");
74
require_once("system.inc");
75

    
76
$pconfig['hostname'] = $config['system']['hostname'];
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$pconfig['domain'] = $config['system']['domain'];
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list($pconfig['dns1'], $pconfig['dns2'], $pconfig['dns3'], $pconfig['dns4']) = $config['system']['dnsserver'];
79

    
80
$arr_gateways = return_gateways_array();
81

    
82
$pconfig['dns1gw'] = $config['system']['dns1gw'];
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$pconfig['dns2gw'] = $config['system']['dns2gw'];
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$pconfig['dns3gw'] = $config['system']['dns3gw'];
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$pconfig['dns4gw'] = $config['system']['dns4gw'];
86

    
87
$pconfig['dnsallowoverride'] = isset($config['system']['dnsallowoverride']);
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$pconfig['timezone'] = $config['system']['timezone'];
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$pconfig['timeupdateinterval'] = $config['system']['time-update-interval'];
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$pconfig['timeservers'] = $config['system']['timeservers'];
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$pconfig['language'] = $config['system']['language'];
92

    
93
$pconfig['dnslocalhost'] = isset($config['system']['dnslocalhost']);
94

    
95
if (!isset($pconfig['timeupdateinterval'])) {
96
	$pconfig['timeupdateinterval'] = 300;
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}
98
if (!$pconfig['timezone']) {
99
	$pconfig['timezone'] = "Etc/UTC";
100
}
101
if (!$pconfig['timeservers']) {
102
	$pconfig['timeservers'] = "pool.ntp.org";
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}
104

    
105
$changedesc = gettext("System") . ": ";
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$changecount = 0;
107

    
108
function is_timezone($elt) {
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	return !preg_match("/\/$/", $elt);
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}
111

    
112
if ($pconfig['timezone'] <> $_POST['timezone']) {
113
	filter_pflog_start(true);
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}
115

    
116
$timezonelist = system_get_timezone_list();
117

    
118
$multiwan = false;
119
$interfaces = get_configured_interface_list();
120
foreach ($interfaces as $interface) {
121
	if (interface_has_gateway($interface)) {
122
		$multiwan = true;
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	}
124
}
125

    
126
if ($_POST) {
127

    
128
	$changecount++;
129

    
130
	unset($input_errors);
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	$pconfig = $_POST;
132

    
133
	/* input validation */
134
	$reqdfields = explode(" ", "hostname domain");
135
	$reqdfieldsn = array(gettext("Hostname"), gettext("Domain"));
136

    
137
	do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);
138

    
139
	if ($_POST['hostname']) {
140
		if (!is_hostname($_POST['hostname'])) {
141
			$input_errors[] = gettext("The hostname can only contain the characters A-Z, 0-9 and '-'. It may not start or end with '-'.");
142
		} else {
143
			if (!is_unqualified_hostname($_POST['hostname'])) {
144
				$input_errors[] = gettext("A valid hostname is specified, but the domain name part should be omitted");
145
			}
146
		}
147
	}
148
	if ($_POST['domain'] && !is_domain($_POST['domain'])) {
149
		$input_errors[] = gettext("The domain may only contain the characters a-z, 0-9, '-' and '.'.");
150
	}
151

    
152
	$ignore_posted_dnsgw = array();
153

    
154
	for ($dnscounter=1; $dnscounter<5; $dnscounter++) {
155
		$dnsname="dns{$dnscounter}";
156
		$dnsgwname="dns{$dnscounter}gw";
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		if (($_POST[$dnsname] && !is_ipaddr($_POST[$dnsname]))) {
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			$input_errors[] = gettext("A valid IP address must be specified for DNS server $dnscounter.");
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		} else {
160
			if (($_POST[$dnsgwname] <> "") && ($_POST[$dnsgwname] <> "none")) {
161
				// A real gateway has been selected.
162
				if (is_ipaddr($_POST[$dnsname])) {
163
					if ((is_ipaddrv4($_POST[$dnsname])) && (validate_address_family($_POST[$dnsname], $_POST[$dnsgwname]) === false)) {
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						$input_errors[] = gettext("You can not specify IPv6 gateway '{$_POST[$dnsgwname]}' for IPv4 DNS server '{$_POST[$dnsname]}'");
165
					}
166
					if ((is_ipaddrv6($_POST[$dnsname])) && (validate_address_family($_POST[$dnsname], $_POST[$dnsgwname]) === false)) {
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						$input_errors[] = gettext("You can not specify IPv4 gateway '{$_POST[$dnsgwname]}' for IPv6 DNS server '{$_POST[$dnsname]}'");
168
					}
169
				} else {
170
					// The user selected a gateway but did not provide a DNS address. Be nice and set the gateway back to "none".
171
					$ignore_posted_dnsgw[$dnsgwname] = true;
172
				}
173
			}
174
		}
175
	}
176

    
177
	$direct_networks_list = explode(" ", filter_get_direct_networks_list());
178
	for ($dnscounter=1; $dnscounter<5; $dnscounter++) {
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		$dnsitem = "dns{$dnscounter}";
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		$dnsgwitem = "dns{$dnscounter}gw";
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		if ($_POST[$dnsgwitem]) {
182
			if (interface_has_gateway($_POST[$dnsgwitem])) {
183
				foreach ($direct_networks_list as $direct_network) {
184
					if (ip_in_subnet($_POST[$dnsitem], $direct_network)) {
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						$input_errors[] = sprintf(gettext("You can not assign a gateway to DNS '%s' server which is on a directly connected network."), $_POST[$dnsitem]);
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					}
187
				}
188
			}
189
		}
190
	}
191

    
192
	$t = (int)$_POST['timeupdateinterval'];
193
	if (($t < 0) || (($t > 0) && ($t < 6)) || ($t > 1440)) {
194
		$input_errors[] = gettext("The time update interval must be either 0 (disabled) or between 6 and 1440.");
195
	}
196
	# it's easy to have a little too much whitespace in the field, clean it up for the user before processing.
197
	$_POST['timeservers'] = preg_replace('/[[:blank:]]+/', ' ', $_POST['timeservers']);
198
	$_POST['timeservers'] = trim($_POST['timeservers']);
199
	foreach (explode(' ', $_POST['timeservers']) as $ts) {
200
		if (!is_domain($ts)) {
201
			$input_errors[] = gettext("A NTP Time Server name may only contain the characters a-z, 0-9, '-' and '.'.");
202
		}
203
	}
204

    
205
	if (!$input_errors) {
206
		update_if_changed("hostname", $config['system']['hostname'], $_POST['hostname']);
207
		update_if_changed("domain", $config['system']['domain'], $_POST['domain']);
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		update_if_changed("timezone", $config['system']['timezone'], $_POST['timezone']);
209
		update_if_changed("NTP servers", $config['system']['timeservers'], strtolower($_POST['timeservers']));
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		update_if_changed("NTP update interval", $config['system']['time-update-interval'], $_POST['timeupdateinterval']);
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212
		if ($_POST['language'] && $_POST['language'] != $config['system']['language']) {
213
			$config['system']['language'] = $_POST['language'];
214
			set_language($config['system']['language']);
215
		}
216

    
217
		/* XXX - billm: these still need updating after figuring out how to check if they actually changed */
218
		$olddnsservers = $config['system']['dnsserver'];
219
		unset($config['system']['dnsserver']);
220
		if ($_POST['dns1']) {
221
			$config['system']['dnsserver'][] = $_POST['dns1'];
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		}
223
		if ($_POST['dns2']) {
224
			$config['system']['dnsserver'][] = $_POST['dns2'];
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		}
226
		if ($_POST['dns3']) {
227
			$config['system']['dnsserver'][] = $_POST['dns3'];
228
		}
229
		if ($_POST['dns4']) {
230
			$config['system']['dnsserver'][] = $_POST['dns4'];
231
		}
232

    
233
		$olddnsallowoverride = $config['system']['dnsallowoverride'];
234

    
235
		unset($config['system']['dnsallowoverride']);
236
		$config['system']['dnsallowoverride'] = $_POST['dnsallowoverride'] ? true : false;
237

    
238
		if ($_POST['dnslocalhost'] == "yes") {
239
			$config['system']['dnslocalhost'] = true;
240
		} else {
241
			unset($config['system']['dnslocalhost']);
242
		}
243

    
244
		/* which interface should the dns servers resolve through? */
245
		$outdnscounter = 0;
246
		for ($dnscounter=1; $dnscounter<5; $dnscounter++) {
247
			$dnsname="dns{$dnscounter}";
248
			$dnsgwname="dns{$dnscounter}gw";
249
			$olddnsgwname = $config['system'][$dnsgwname];
250

    
251
			if ($ignore_posted_dnsgw[$dnsgwname]) {
252
				$thisdnsgwname = "none";
253
			} else {
254
				$thisdnsgwname = $pconfig[$dnsgwname];
255
			}
256

    
257
			// "Blank" out the settings for this index, then we set them below using the "outdnscounter" index.
258
			$config['system'][$dnsgwname] = "none";
259
			$pconfig[$dnsgwname] = "none";
260
			$pconfig[$dnsname] = "";
261

    
262
			if ($_POST[$dnsname]) {
263
				// Only the non-blank DNS servers were put into the config above.
264
				// So we similarly only add the corresponding gateways sequentially to the config (and to pconfig), as we find non-blank DNS servers.
265
				// This keeps the DNS server IP and corresponding gateway "lined up" when the user blanks out a DNS server IP in the middle of the list.
266
				$outdnscounter++;
267
				$outdnsname="dns{$outdnscounter}";
268
				$outdnsgwname="dns{$outdnscounter}gw";
269
				$pconfig[$outdnsname] = $_POST[$dnsname];
270
				if ($_POST[$dnsgwname]) {
271
					$config['system'][$outdnsgwname] = $thisdnsgwname;
272
					$pconfig[$outdnsgwname] = $thisdnsgwname;
273
				} else {
274
					// Note: when no DNS GW name is chosen, the entry is set to "none", so actually this case never happens.
275
					unset($config['system'][$outdnsgwname]);
276
					$pconfig[$outdnsgwname] = "";
277
				}
278
			}
279
			if (($olddnsgwname != "") && ($olddnsgwname != "none") && (($olddnsgwname != $thisdnsgwname) || ($olddnsservers[$dnscounter-1] != $_POST[$dnsname]))) {
280
				// A previous DNS GW name was specified. It has now gone or changed, or the DNS server address has changed.
281
				// Remove the route. Later calls will add the correct new route if needed.
282
				if (is_ipaddrv4($olddnsservers[$dnscounter-1])) {
283
					mwexec("/sbin/route delete " . escapeshellarg($olddnsservers[$dnscounter-1]));
284
				} else {
285
					if (is_ipaddrv6($olddnsservers[$dnscounter-1])) {
286
						mwexec("/sbin/route delete -inet6 " . escapeshellarg($olddnsservers[$dnscounter-1]));
287
					}
288
				}
289
			}
290
		}
291

    
292
		if ($changecount > 0) {
293
			write_config($changedesc);
294
		}
295

    
296
		$retval = 0;
297
		$retval = system_hostname_configure();
298
		$retval |= system_hosts_generate();
299
		$retval |= system_resolvconf_generate();
300
		if (isset($config['dnsmasq']['enable'])) {
301
			$retval |= services_dnsmasq_configure();
302
		} elseif (isset($config['unbound']['enable'])) {
303
			$retval |= services_unbound_configure();
304
		}
305
		$retval |= system_timezone_configure();
306
		$retval |= system_ntp_configure();
307

    
308
		if ($olddnsallowoverride != $config['system']['dnsallowoverride']) {
309
			$retval |= send_event("service reload dns");
310
		}
311

    
312
		// Reload the filter - plugins might need to be run.
313
		$retval |= filter_configure();
314

    
315
		$savemsg = get_std_save_message($retval);
316
	}
317

    
318
	unset($ignore_posted_dnsgw);
319
}
320

    
321
$pgtitle = array(gettext("System"), gettext("General Setup"));
322
include("head.inc");
323

    
324
if ($input_errors)
325
	print_input_errors($input_errors);
326
if ($savemsg)
327
	print_info_box($savemsg);
328
?>
329
<div id="container">
330
<?php
331

    
332
require_once('classes/Form.class.php');
333
$form = new Form;
334
$section = new Form_Section('System');
335
$section->addInput(new Form_Input(
336
	'hostname',
337
	'Hostname',
338
	'text',
339
	$pconfig['hostname'],
340
	['placeholder' => 'pfSense']
341
))->setHelp('Name of the firewall host, without domain part');
342
$section->addInput(new Form_Input(
343
	'domain',
344
	'Domain',
345
	'text',
346
	$pconfig['domain'],
347
	['placeholder' => 'mycorp.com, home, office, private, etc.']
348
))->setHelp('Do not use \'local\' as a domain name. It will cause local '.
349
	'hosts running mDNS (avahi, bonjour, etc.) to be unable to resolve '.
350
	'local hosts not running mDNS.');
351
$form->add($section);
352

    
353
$section = new Form_Section('DNS server settings');
354

    
355
for ($i=1; $i<5; $i++)
356
{
357
//	if (!isset($pconfig['dns'.$i]))
358
//		continue;
359

    
360
	$group = new Form_Group('DNS Server ' . $i);
361

    
362
	$group->add(new Form_Input(
363
		'dns' . $i,
364
		'DNS Server',
365
		'text',
366
		$pconfig['dns'. $i]
367
	))->setHelp(($i == 4) ? 'Address':null);
368

    
369
	$help = "Enter IP addresses to be used by the system for DNS resolution. " .
370
		"These are also used for the DHCP service, DNS forwarder and for PPTP VPN clients.";
371

    
372
	if ($multiwan)	{
373
		$options = array('none' => 'none');
374

    
375
		foreach($arr_gateways as $gwname => $gwitem) {
376
			if((is_ipaddrv4(lookup_gateway_ip_by_name($pconfig[$dnsgw])) && (is_ipaddrv6($gwitem['gateway'])))) {
377
				continue;
378
			}
379

    
380
			if((is_ipaddrv6(lookup_gateway_ip_by_name($pconfig[$dnsgw])) && (is_ipaddrv4($gwitem['gateway'])))) {
381
				continue;
382
			}
383

    
384
			$options[$gwname] = $gwname.' - '.$gwitem['friendlyiface'].' - '.$gwitem['gateway'];
385
		}
386

    
387
		$group->add(new Form_Select(
388
			'dns' . $i . 'gw',
389
			'Gateway',
390
			$pconfig['dns' . $i . 'gw'],
391
			$options
392
		))->setHelp(($i == 4) ? 'Gateway':null);;
393

    
394
		$help .= '<br/>'. "In addition, optionally select the gateway for each DNS server. " .
395
			"When using multiple WAN connections there should be at least one unique DNS server per gateway.";
396
	}
397

    
398
	if($i == 4)
399
		$group->setHelp($help);
400

    
401
	$section->add($group);
402
}
403

    
404
$section->addInput(new Form_Checkbox(
405
	'dnsallowoverride',
406
	'DNS server override',
407
	'Allow DNS server list to be overridden by DHCP/PPP on WAN',
408
	$pconfig['dnsallowoverride']
409
))->setHelp(sprintf(gettext('If this option is set, %s will use DNS servers'.
410
	'assigned by a DHCP/PPP server on WAN for its own purposes (including '.
411
	'the DNS forwarder). However, they will not be assigned to DHCP and PPTP '.
412
	'VPN clients.'), $g['product_name']));
413

    
414
$section->addInput(new Form_Checkbox(
415
	'dnslocalhost',
416
	'Disable DNS forwarder',
417
	'Do not use the DNS Forwarder as a DNS server for the firewall',
418
	$pconfig['dnslocalhost']
419
))->setHelp('By default localhost (127.0.0.1) will be used as the first DNS'.
420
	'server where the DNS Forwarder or DNS Resolver is enabled and set to '.
421
	'listen on Localhost, so system can use the local DNS service to perform'.
422
	'lookups. Checking this box omits localhost from the list of DNS servers.');
423

    
424
$form->add($section);
425

    
426
$section = new Form_Section('Localization');
427
$section->addInput(new Form_Select(
428
	'timezone',
429
	'Timezone',
430
	$pconfig['timezone'],
431
	array_combine($timezonelist, $timezonelist)
432
))->setHelp('Select the location closest to you');
433
$section->addInput(new Form_Input(
434
	'timeservers',
435
	'Timeservers',
436
	'text',
437
	$pconfig['timeservers']
438
))->setHelp('Use a space to separate multiple hosts (only one required). '.
439
	'Remember to set up at least one DNS server if you enter a host name here!');
440
$section->addInput(new Form_Select(
441
	'language',
442
	'Language',
443
	$pconfig['language'],
444
	get_locale_list()
445
))->setHelp('Choose a language for the webConfigurator');
446

    
447
$form->add($section);
448

    
449
print $form;
450

    
451
include("foot.inc");
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