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1
<?php
2
/*
3
 * config.lib.inc
4
 *
5
 * part of pfSense (https://www.pfsense.org)
6
 * Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)
7
 * Copyright (c) 2009 Erik Kristensen
8
 * All rights reserved.
9
 *
10
 * originally part of m0n0wall (http://m0n0.ch/wall)
11
 * Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
12
 * All rights reserved.
13
 *
14
 * Licensed under the Apache License, Version 2.0 (the "License");
15
 * you may not use this file except in compliance with the License.
16
 * You may obtain a copy of the License at
17
 *
18
 * http://www.apache.org/licenses/LICENSE-2.0
19
 *
20
 * Unless required by applicable law or agreed to in writing, software
21
 * distributed under the License is distributed on an "AS IS" BASIS,
22
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
23
 * See the License for the specific language governing permissions and
24
 * limitations under the License.
25
 */
26

    
27
/****f* config/encrypted_configxml
28
 * NAME
29
 *   encrypted_configxml - Checks to see if config.xml is encrypted and if so, prompts to unlock.
30
 * INPUTS
31
 *   None
32
 * RESULT
33
 *   $config 	- rewrites config.xml without encryption
34
 ******/
35
function encrypted_configxml() {
36
	global $g, $config;
37

    
38
	if (!file_exists($g['conf_path'] . "/config.xml")) {
39
		return;
40
	}
41

    
42
	if (!platform_booting()) {
43
		return;
44
	}
45

    
46
	$configtxt = file_get_contents($g['conf_path'] . "/config.xml");
47
	if (tagfile_deformat($configtxt, $configtxt, "config.xml")) {
48
		$fp = fopen('php://stdin', 'r');
49
		$data = "";
50
		echo "\n\n*** Encrypted config.xml detected ***\n";
51
		while ($data == "") {
52
			echo "\nEnter the password to decrypt config.xml: ";
53
			$decrypt_password = chop(fgets($fp));
54
			$data = decrypt_data($configtxt, $decrypt_password);
55
			if (!strstr($data, "<pfsense>")) {
56
				$data = "";
57
			}
58
			if ($data) {
59
				$fd = fopen($g['conf_path'] . "/config.xml.tmp", "w");
60
				fwrite($fd, $data);
61
				fclose($fd);
62
				exec("/bin/mv {$g['conf_path']}/config.xml.tmp {$g['conf_path']}/config.xml");
63
				echo "\n" . gettext("Config.xml unlocked.") . "\n";
64
				fclose($fp);
65
				pfSense_fsync("{$g['conf_path']}/config.xml");
66
			} else {
67
				echo "\n" . gettext("Invalid password entered.  Please try again.") . "\n";
68
			}
69
		}
70
	}
71
}
72

    
73
/****f* config/parse_config
74
 * NAME
75
 *   parse_config - Read in config.cache or config.xml if needed and return $config array
76
 * INPUTS
77
 *   $parse       - boolean to force parse_config() to read config.xml and generate config.cache
78
 * RESULT
79
 *   $config      - array containing all configuration variables
80
 ******/
81
function parse_config($parse = false) {
82
	global $g, $config_parsed, $config_extra;
83

    
84
	$lockkey = lock('config');
85
	$config_parsed = false;
86

    
87
	if (!file_exists("{$g['conf_path']}/config.xml") || filesize("{$g['conf_path']}/config.xml") == 0) {
88
		$last_backup = discover_last_backup();
89
		if ($last_backup) {
90
			log_error(gettext("No config.xml found, attempting last known config restore."));
91
			file_notice("config.xml", gettext("No config.xml found, attempting last known config restore."), "pfSenseConfigurator", "");
92
			restore_backup("{$g['conf_path']}/backup/{$last_backup}");
93
		} else {
94
			unlock($lockkey);
95
			die(gettext("Config.xml is corrupted and is 0 bytes.  Could not restore a previous backup."));
96
		}
97
	}
98

    
99
	if (platform_booting(true)) {
100
		echo ".";
101
	}
102

    
103
	// Check for encrypted config.xml
104
	encrypted_configxml();
105

    
106
	if (!$parse) {
107
		if (file_exists($g['tmp_path'] . '/config.cache')) {
108
			$config = unserialize(file_get_contents($g['tmp_path'] . '/config.cache'));
109
			if (!is_array($config)) {
110
				$parse = true;
111
			}
112
		} else {
113
			$parse = true;
114
		}
115
	}
116
	if ($parse == true) {
117
		if (!file_exists($g['conf_path'] . "/config.xml")) {
118
			if (platform_booting(true)) {
119
				echo ".";
120
			}
121
			log_error("No config.xml found, attempting last known config restore.");
122
			file_notice("config.xml", "No config.xml found, attempting last known config restore.", "pfSenseConfigurator", "");
123
			$last_backup = discover_last_backup();
124
			if ($last_backup) {
125
				restore_backup("/cf/conf/backup/{$last_backup}");
126
			} else {
127
				log_error(gettext("Could not restore config.xml."));
128
				unlock($lockkey);
129
				die(gettext("Config.xml is corrupted and is 0 bytes.  Could not restore a previous backup."));
130
			}
131
		}
132
		$config = parse_xml_config($g['conf_path'] . '/config.xml', array($g['xml_rootobj'], 'pfsense'));
133
		if ($config == -1) {
134
			$last_backup = discover_last_backup();
135
			if ($last_backup) {
136
				restore_backup("/cf/conf/backup/{$last_backup}");
137
			} else {
138
				log_error(gettext("Could not restore config.xml."));
139
				unlock($lockkey);
140
				die("Config.xml is corrupted and is 0 bytes.  Could not restore a previous backup.");
141
			}
142
		}
143
		generate_config_cache($config);
144
	}
145

    
146
	if (platform_booting(true)) {
147
		echo ".";
148
	}
149

    
150
	$config_parsed = true;
151
	unlock($lockkey);
152

    
153
	alias_make_table($config);
154

    
155
	return $config;
156
}
157

    
158
/****f* config/generate_config_cache
159
 * NAME
160
 *   generate_config_cache - Write serialized configuration to cache.
161
 * INPUTS
162
 *   $config	- array containing current firewall configuration
163
 * RESULT
164
 *   boolean	- true on completion
165
 ******/
166
function generate_config_cache($config) {
167
	global $g, $config_extra;
168

    
169
	$configcache = fopen($g['tmp_path'] . '/config.cache', "w");
170
	fwrite($configcache, serialize($config));
171
	fclose($configcache);
172
	pfSense_fsync("{$g['tmp_path']}/config.cache");
173

    
174
	unset($configcache);
175
	/* Used for config.extra.xml */
176
	if (file_exists($g['tmp_path'] . '/config.extra.cache') && $config_extra) {
177
		$configcacheextra = fopen($g['tmp_path'] . '/config.extra.cache', "w");
178
		fwrite($configcacheextra, serialize($config_extra));
179
		fclose($configcacheextra);
180
		pfSense_fsync("{$g['tmp_path']}/config.extra.cache");
181
		unset($configcacheextra);
182
	}
183
}
184

    
185
function discover_last_backup() {
186
	$backups = glob('/cf/conf/backup/*.xml');
187
	$last_backup = "";
188
	$last_mtime = 0;
189
	foreach ($backups as $backup) {
190
		if (filemtime($backup) > $last_mtime) {
191
			$last_mtime = filemtime($backup);
192
			$last_backup = $backup;
193
		}
194
	}
195

    
196
	return basename($last_backup);
197
}
198

    
199
function restore_backup($file) {
200
	global $g;
201

    
202
	if (file_exists($file)) {
203
		unlink_if_exists("{$g['tmp_path']}/config.cache");
204
		copy("$file", "/cf/conf/config.xml");
205
		pfSense_fsync("/cf/conf/config.xml");
206
		pfSense_fsync($g['conf_path']);
207
		disable_security_checks();
208
		log_error(sprintf(gettext('%1$s is restoring the configuration %2$s'), $g['product_name'], $file));
209
		file_notice("config.xml", sprintf(gettext('%1$s is restoring the configuration %2$s'), $g['product_name'], $file), "pfSenseConfigurator", "");
210
	}
211
}
212

    
213
/****f* config/parse_config_bootup
214
 * NAME
215
 *   parse_config_bootup - Bootup-specific configuration checks.
216
 * RESULT
217
 *   null
218
 ******/
219
function parse_config_bootup() {
220
	global $config, $g;
221

    
222
	if (platform_booting()) {
223
		echo ".";
224
	}
225

    
226
	$lockkey = lock('config');
227
	if (!file_exists("{$g['conf_path']}/config.xml")) {
228
		if (platform_booting()) {
229
			$last_backup = discover_last_backup();
230
			if ($last_backup) {
231
				log_error("No config.xml found, attempting last known config restore.");
232
				file_notice("config.xml", gettext("No config.xml found, attempting last known config restore."), "pfSenseConfigurator", "");
233
				restore_backup("/cf/conf/backup/{$last_backup}");
234
			}
235
			if (!file_exists("{$g['conf_path']}/config.xml")) {
236
				echo sprintf(gettext("XML configuration file not found.  %s cannot continue booting."), $g['product_name']) . "\n";
237
				unlock($lockkey);
238
				mwexec("/sbin/halt");
239
				exit;
240
			}
241
			log_error("Last known config found and restored.  Please double check the configuration file for accuracy.");
242
			file_notice("config.xml", gettext("Last known config found and restored.  Please double check the configuration file for accuracy."), "pfSenseConfigurator", "");
243
		} else {
244
			unlock($lockkey);
245
			log_error(gettext("Could not find a usable configuration file! Exiting...."));
246
			exit(0);
247
		}
248
	}
249

    
250
	if (filesize("{$g['conf_path']}/config.xml") == 0) {
251
		$last_backup = discover_last_backup();
252
		if ($last_backup) {
253
			log_error(gettext("No config.xml found, attempting last known config restore."));
254
			file_notice("config.xml", gettext("No config.xml found, attempting last known config restore."), "pfSenseConfigurator", "");
255
			restore_backup("{$g['conf_path']}/backup/{$last_backup}");
256
		} else {
257
			unlock($lockkey);
258
			die(gettext("Config.xml is corrupted and is 0 bytes.  Could not restore a previous backup."));
259
		}
260
	}
261
	unlock($lockkey);
262

    
263
	$config = parse_config(true);
264

    
265
	if ((float)$config['version'] > (float)$g['latest_config']) {
266
		echo <<<EOD
267

    
268

    
269
*******************************************************************************
270
* WARNING!                                                                    *
271
* The current configuration has been created with a newer version of {$g['product_name']}  *
272
* than this one! This can lead to serious misbehavior and even security       *
273
* holes! You are urged to either upgrade to a newer version of {$g['product_name']} or     *
274
* revert to the default configuration immediately!                            *
275
*******************************************************************************
276

    
277

    
278
EOD;
279
		}
280

    
281
	/* make alias table (for faster lookups) */
282
	alias_make_table($config);
283
}
284

    
285
/****f* config/conf_mount_rw
286
 * NAME
287
 *   conf_mount_rw - Mount filesystems read/write.
288
 * RESULT
289
 *   null
290
 ******/
291
/* mount flash card read/write */
292
function conf_mount_rw() {
293
	/* Obsoleted. Keep it here untill all calls are removed */
294
	return;
295
}
296

    
297
/****f* config/conf_mount_ro
298
 * NAME
299
 *   conf_mount_ro - Mount filesystems readonly.
300
 * RESULT
301
 *   null
302
 ******/
303
function conf_mount_ro() {
304
	/* Obsoleted. Keep it here untill all calls are removed */
305
	return;
306
}
307

    
308
/****f* config/convert_config
309
 * NAME
310
 *   convert_config - Attempt to update config.xml.
311
 * DESCRIPTION
312
 *   convert_config() reads the current global configuration
313
 *   and attempts to convert it to conform to the latest
314
 *   config.xml version. This allows major formatting changes
315
 *   to be made with a minimum of breakage.
316
 * RESULT
317
 *   null
318
 ******/
319
/* convert configuration, if necessary */
320
function convert_config() {
321
	global $config, $g;
322
	$now = date("H:i:s");
323
	log_error(sprintf(gettext("Start Configuration upgrade at %s, set execution timeout to 15 minutes"), $now));
324
	//ini_set("max_execution_time", "900");
325

    
326
	/* special case upgrades */
327
	/* fix every minute crontab bogons entry */
328
	if (is_array($config['cron'])) {
329
		$cron_item_count = count($config['cron']['item']);
330
		for ($x = 0; $x < $cron_item_count; $x++) {
331
			if (stristr($config['cron']['item'][$x]['command'], "rc.update_bogons.sh")) {
332
				if ($config['cron']['item'][$x]['hour'] == "*") {
333
					$config['cron']['item'][$x]['hour'] = "3";
334
					write_config(gettext("Updated bogon update frequency to 3am"));
335
					log_error(gettext("Updated bogon update frequency to 3am"));
336
				}
337
			}
338
		}
339
	}
340

    
341
	// Save off config version
342
	$prev_version = $config['version'];
343

    
344
	include_once('auth.inc');
345
	include_once('upgrade_config.inc');
346
	if (file_exists("/etc/inc/upgrade_config_custom.inc")) {
347
		include_once("upgrade_config_custom.inc");
348
	}
349

    
350
	if ($config['version'] == $g['latest_config']) {
351
		additional_config_upgrade();
352
		return;		/* already at latest version */
353
	}
354

    
355
	if (!is_array($config['system']['already_run_config_upgrade'])) {
356
		$config['system']['already_run_config_upgrade'] = array();
357
	}
358
	$already_run = $config['system']['already_run_config_upgrade'];
359

    
360
	/* Loop and run upgrade_VER_to_VER() until we're at current version */
361
	while ($config['version'] < $g['latest_config']) {
362
		$cur = $config['version'] * 10;
363
		$next = $cur + 1;
364
		$migration_function = sprintf('upgrade_%03d_to_%03d', $cur,
365
		    $next);
366

    
367
		foreach (array("", "_custom") as $suffix) {
368
			$migration_function .= $suffix;
369
			if (!function_exists($migration_function)) {
370
				continue;
371
			}
372
			if (isset($already_run[$migration_function])) {
373
				/* Already executed, skip now */
374
				unset($config['system']
375
				    ['already_run_config_upgrade']
376
				    [$migration_function]);
377
			} else {
378
				$migration_function();
379
			}
380
		}
381
		$config['version'] = sprintf('%.1f', $next / 10);
382
		if (platform_booting()) {
383
			echo ".";
384
		}
385
	}
386

    
387
	if ($prev_version != $config['version']) {
388
		$now = date("H:i:s");
389
		log_error(sprintf(gettext("Ended Configuration upgrade at %s"), $now));
390

    
391
		write_config(sprintf(gettext('Upgraded config version level from %1$s to %2$s'), $prev_version, $config['version']));
392
	}
393

    
394
	additional_config_upgrade();
395
}
396

    
397
/****f* config/safe_write_file
398
 * NAME
399
 *   safe_write_file - Write a file out atomically
400
 * DESCRIPTION
401
 *   safe_write_file() Writes a file out atomically by first writing to a
402
 *   temporary file of the same name but ending with the pid of the current
403
 *   process, them renaming the temporary file over the original.
404
 * INPUTS
405
 *   $filename  - string containing the filename of the file to write
406
 *   $content   - string or array containing the file content to write to file
407
 *   $force_binary      - boolean denoting whether we should force binary
408
 *   mode writing.
409
 * RESULT
410
 *   boolean - true if successful, false if not
411
 ******/
412
function safe_write_file($file, $content, $force_binary = false) {
413
	$tmp_file = $file . "." . getmypid();
414
	$write_mode = $force_binary ? "wb" : "w";
415

    
416
	$fd = fopen($tmp_file, $write_mode);
417
	if (!$fd) {
418
		// Unable to open temporary file for writing
419
		return false;
420
	}
421
	if (is_array($content)) {
422
		foreach ($content as $line) {
423
			if (!fwrite($fd, $line . "\n")) {
424
				// Unable to write to temporary file
425
				fclose($fd);
426
				return false;
427
			}
428
		}
429
	} elseif (!fwrite($fd, $content)) {
430
		// Unable to write to temporary file
431
		fclose($fd);
432
		return false;
433
	}
434
	fflush($fd);
435
	fclose($fd);
436

    
437
	if (!pfSense_fsync($tmp_file) || !rename($tmp_file, $file)) {
438
		// Unable to move temporary file to original
439
		@unlink($tmp_file);
440
		return false;
441
	}
442

    
443
	// Sync file before returning
444
	return pfSense_fsync($file);
445
}
446

    
447
/****f* config/write_config
448
 * NAME
449
 *   write_config - Backup and write the firewall configuration.
450
 * DESCRIPTION
451
 *   write_config() handles backing up the current configuration,
452
 *   applying changes, and regenerating the configuration cache.
453
 * INPUTS
454
 *   $desc	- string containing the a description of configuration changes
455
 *   $backup	- boolean: do not back up current configuration if false.
456
 *   $write_config_only	- boolean: do not sync or reload anything; just save the configuration if true.
457
 * RESULT
458
 *   null
459
 ******/
460
/* save the system configuration */
461
function write_config($desc="Unknown", $backup = true, $write_config_only = false) {
462
	global $config, $g;
463

    
464
	if (!empty($_SERVER['REMOTE_ADDR'])) {
465
		@phpsession_begin();
466
		if (!empty($_SESSION['Username']) && ($_SESSION['Username'] != "admin")) {
467
			$user = getUserEntry($_SESSION['Username']);
468
			if (is_array($user) && userHasPrivilege($user, "user-config-readonly")) {
469
				syslog(LOG_AUTHPRIV, sprintf(gettext("Save config permission denied by the 'User - Config: Deny Config Write' permission for user '%s'."), $_SESSION['Username']));
470
				phpsession_end(true);
471
				return false;
472
			}
473
		}
474
		if (!isset($argc)) {
475
			phpsession_end(true);
476
		}
477
	}
478

    
479
	if (isset($config['reset_factory_defaults'])) {
480
		/*
481
		   We have put a default config.xml on disk and are about to reboot
482
		   or reload it. Do not let any system or package code try to save
483
		   state to config because that would overwrite the default config
484
		   with the running config.
485
		*/
486
		return false;
487
	}
488

    
489
	if ($backup) {
490
		backup_config();
491
	}
492

    
493
	$config['revision'] = make_config_revision_entry($desc);
494

    
495
	$lockkey = lock('config', LOCK_EX);
496

    
497
	/* generate configuration XML */
498
	$xmlconfig = dump_xml_config($config, $g['xml_rootobj']);
499

    
500
	/* write new configuration */
501
	if (!safe_write_file("{$g['cf_conf_path']}/config.xml", $xmlconfig)) {
502
		log_error(gettext("WARNING: Config contents could not be saved. Could not open file!"));
503
		unlock($lockkey);
504
		file_notice("config.xml", sprintf(gettext('Unable to open %1$s/config.xml for writing in write_config()%2$s'), $g['cf_conf_path'], "\n"));
505
		return -1;
506
	}
507

    
508
	cleanup_backupcache(true);
509

    
510
	/* re-read configuration */
511
	/* NOTE: We assume that the file can be parsed since we wrote it. */
512
	$config = parse_xml_config("{$g['conf_path']}/config.xml", $g['xml_rootobj']);
513
	if ($config == -1) {
514
		copy("{$g['conf_path']}/config.xml", "{$g['conf_path']}/config.xml.bad");
515
		$last_backup = discover_last_backup();
516
		if ($last_backup) {
517
			restore_backup("/cf/conf/backup/{$last_backup}");
518
			$config = parse_xml_config("{$g['conf_path']}/config.xml", $g['xml_rootobj']);
519
			if (platform_booting()) {
520
				echo "\n\n ************** WARNING **************";
521
				echo "\n\n Configuration could not be validated. A previous configuration was restored. \n";
522
				echo "\n The failed configuration file has been saved as {$g['conf_path']}/config.xml.bad \n\n";
523
			}
524
		} else {
525
			log_error(gettext("Could not restore config.xml."));
526
		}
527
	} else {
528
		generate_config_cache($config);
529
	}
530

    
531
	unlock($lockkey);
532

    
533
	if ($write_config_only) {
534
		return $config;
535
	}
536

    
537
	unlink_if_exists("/usr/local/pkg/pf/carp_sync_client.php");
538

    
539
	/* sync carp entries to other firewalls */
540
	carp_sync_client();
541

    
542
	if (is_dir("/usr/local/pkg/write_config")) {
543
		/* process packager manager custom rules */
544
		run_plugins("/usr/local/pkg/write_config/");
545
	}
546

    
547
	return $config;
548
}
549

    
550
/****f* config/reset_factory_defaults
551
 * NAME
552
 *   reset_factory_defaults - Reset the system to its default configuration.
553
 * RESULT
554
 *   integer	- indicates completion
555
 ******/
556
function reset_factory_defaults($lock = false, $reboot_required = true) {
557
	global $config, $g;
558

    
559

    
560
	/* Remove all additional packages */
561
	mwexec("/bin/sh /usr/local/sbin/{$g['product_name']}-upgrade " .
562
	    "-r ALL_PACKAGES");
563

    
564
	if (!$lock) {
565
		$lockkey = lock('config', LOCK_EX);
566
	}
567

    
568
	/* create conf directory, if necessary */
569
	safe_mkdir($g['cf_conf_path']);
570

    
571
	/* clear out /conf */
572
	$dh = opendir($g['conf_path']);
573
	while ($filename = readdir($dh)) {
574
		if (($filename != ".") && ($filename != "..") &&
575
		    (!is_dir($g['conf_path'] . "/" . $filename))) {
576
			unlink_if_exists($g['conf_path'] . "/" . $filename);
577
		}
578
	}
579
	closedir($dh);
580
	unlink_if_exists($g['tmp_path'] . "/config.cache");
581

    
582
	/* copy default configuration */
583
	copy("{$g['conf_default_path']}/config.xml",
584
	    "{$g['cf_conf_path']}/config.xml");
585

    
586
	disable_security_checks();
587

    
588
	/*
589
	   Let write_config know that we are awaiting reload of the current config
590
	   to factory defaults. Either the system is about to reboot, throwing away
591
	   the current in-memory config as it shuts down, or the in-memory config
592
	   is about to be reloaded on-the-fly by parse_config.
593

    
594
	   In both cases, we want to ensure that write_config does not flush the
595
	   in-memory config back to disk.
596
	*/
597
	$config['reset_factory_defaults'] = true;
598

    
599
	/* call the wizard */
600
	if ($reboot_required) {
601
		// If we need a reboot first then touch a different trigger file.
602
		touch("/conf/trigger_initial_wizard_after_reboot");
603
	} else {
604
		touch("/conf/trigger_initial_wizard");
605
	}
606
	if (!$lock) {
607
		unlock($lockkey);
608
	}
609
	setup_serial_port();
610
	return 0;
611
}
612

    
613
function config_restore($conffile) {
614
	global $config, $g;
615

    
616
	if (!file_exists($conffile)) {
617
		return 1;
618
	}
619

    
620
	backup_config();
621

    
622

    
623
	$lockkey = lock('config', LOCK_EX);
624

    
625
	unlink_if_exists("{$g['tmp_path']}/config.cache");
626
	copy($conffile, "{$g['cf_conf_path']}/config.xml");
627

    
628
	disable_security_checks();
629

    
630
	unlock($lockkey);
631

    
632
	$config = parse_config(true);
633

    
634

    
635
	write_config(sprintf(gettext("Reverted to %s."), array_pop(explode("/", $conffile))), false);
636

    
637
	return 0;
638
}
639

    
640
function config_install($conffile) {
641
	global $config, $g;
642

    
643
	if (!file_exists($conffile)) {
644
		return 1;
645
	}
646

    
647
	if (!config_validate("{$conffile}")) {
648
		return 1;
649
	}
650

    
651
	if (platform_booting()) {
652
		echo gettext("Installing configuration...") . "\n";
653
	} else {
654
		log_error(gettext("Installing configuration ...."));
655
	}
656

    
657
	$lockkey = lock('config', LOCK_EX);
658

    
659
	copy($conffile, "{$g['conf_path']}/config.xml");
660

    
661
	disable_security_checks();
662

    
663
	/* unlink cache file if it exists */
664
	if (file_exists("{$g['tmp_path']}/config.cache")) {
665
		unlink("{$g['tmp_path']}/config.cache");
666
	}
667

    
668
	unlock($lockkey);
669

    
670
	return 0;
671
}
672

    
673
/*
674
 * Disable security checks for DNS rebind and HTTP referrer until next time
675
 * they pass (or reboot), to aid in preventing accidental lockout when
676
 * restoring settings like hostname, domain, IP addresses, and settings
677
 * related to the DNS rebind and HTTP referrer checks.
678
 * Intended for use when restoring a configuration or directly
679
 * modifying config.xml without an unconditional reboot.
680
 */
681
function disable_security_checks() {
682
	global $g;
683
	touch("{$g['tmp_path']}/disable_security_checks");
684
}
685

    
686
/* Restores security checks.  Should be called after all succeed. */
687
function restore_security_checks() {
688
	global $g;
689
	unlink_if_exists("{$g['tmp_path']}/disable_security_checks");
690
}
691

    
692
/* Returns status of security check temporary disable. */
693
function security_checks_disabled() {
694
	global $g;
695
	return file_exists("{$g['tmp_path']}/disable_security_checks");
696
}
697

    
698
function config_validate($conffile) {
699

    
700
	global $g, $xmlerr;
701

    
702
	$xml_parser = xml_parser_create();
703

    
704
	if (!($fp = fopen($conffile, "r"))) {
705
		$xmlerr = gettext("XML error: unable to open file");
706
		return false;
707
	}
708

    
709
	while ($data = fread($fp, 4096)) {
710
		if (!xml_parse($xml_parser, $data, feof($fp))) {
711
			$xmlerr = sprintf(gettext('%1$s at line %2$d'),
712
						xml_error_string(xml_get_error_code($xml_parser)),
713
						xml_get_current_line_number($xml_parser));
714
			return false;
715
		}
716
	}
717
	xml_parser_free($xml_parser);
718

    
719
	fclose($fp);
720

    
721
	return true;
722
}
723

    
724
function cleanup_backupcache($lock = false) {
725
	global $config, $g;
726
	$i = false;
727

    
728
	$revisions = intval(is_numericint($config['system']['backupcount']) ? $config['system']['backupcount'] : $g['default_config_backup_count']);
729

    
730
	if (!$lock) {
731
		$lockkey = lock('config');
732
	}
733

    
734

    
735
	$backups = get_backups();
736
	if ($backups) {
737
		$baktimes = $backups['versions'];
738
		unset($backups['versions']);
739
	} else {
740
		$backups = array();
741
		$baktimes = array();
742
	}
743
	$newbaks = array();
744
	$bakfiles = glob($g['cf_conf_path'] . "/backup/config-*");
745
	$tocache = array();
746

    
747
	foreach ($bakfiles as $backup) { // Check for backups in the directory not represented in the cache.
748
		$backupsize = filesize($backup);
749
		if ($backupsize == 0) {
750
			unlink($backup);
751
			continue;
752
		}
753
		$backupexp = explode('-', $backup);
754
		$backupexp = explode('.', array_pop($backupexp));
755
		$tocheck = array_shift($backupexp);
756
		unset($backupexp);
757
		if (!in_array($tocheck, $baktimes)) {
758
			$i = true;
759
			if (platform_booting()) {
760
				echo ".";
761
			}
762
			$newxml = parse_xml_config($backup, array($g['xml_rootobj'], 'pfsense'));
763
			if ($newxml == "-1") {
764
				log_error(sprintf(gettext("The backup cache file %s is corrupted.  Unlinking."), $backup));
765
				unlink($backup);
766
				log_error(sprintf(gettext("The backup cache file %s is corrupted.  Unlinking."), $backup));
767
				continue;
768
			}
769
			if ($newxml['revision']['description'] == "") {
770
				$newxml['revision']['description'] = "Unknown";
771
			}
772
			if ($newxml['version'] == "") {
773
				$newxml['version'] = "?";
774
			}
775
			$tocache[$tocheck] = array('description' => $newxml['revision']['description'], 'version' => $newxml['version'], 'filesize' => $backupsize);
776
		}
777
	}
778
	foreach ($backups as $checkbak) {
779
		if (count(preg_grep('/' . $checkbak['time'] . '/i', $bakfiles)) != 0) {
780
			$newbaks[] = $checkbak;
781
		} else {
782
			$i = true;
783
			if (platform_booting()) print " " . $tocheck . "r";
784
		}
785
	}
786
	foreach ($newbaks as $todo) {
787
		$tocache[$todo['time']] = array('description' => $todo['description'], 'version' => $todo['version'], 'filesize' => $todo['filesize']);
788
	}
789
	if (is_int($revisions) and (count($tocache) > $revisions)) {
790
		$toslice = array_slice(array_keys($tocache), 0, $revisions);
791
		$newcache = array();
792
		foreach ($toslice as $sliced) {
793
			$newcache[$sliced] = $tocache[$sliced];
794
		}
795
		foreach ($tocache as $version => $versioninfo) {
796
			if (!in_array($version, array_keys($newcache))) {
797
				unlink_if_exists($g['conf_path'] . '/backup/config-' . $version . '.xml');
798
			}
799
		}
800
		$tocache = $newcache;
801
	}
802
	$bakout = fopen($g['cf_conf_path'] . '/backup/backup.cache', "w");
803
	fwrite($bakout, serialize($tocache));
804
	fclose($bakout);
805
	pfSense_fsync("{$g['cf_conf_path']}/backup/backup.cache");
806

    
807
	if (!$lock) {
808
		unlock($lockkey);
809
	}
810
}
811

    
812
function get_backups() {
813
	global $g;
814
	if (file_exists("{$g['cf_conf_path']}/backup/backup.cache")) {
815
		$confvers = unserialize(file_get_contents("{$g['cf_conf_path']}/backup/backup.cache"));
816
		$bakvers = array_keys($confvers);
817
		$toreturn = array();
818
		sort($bakvers);
819
		// 	$bakvers = array_reverse($bakvers);
820
		foreach (array_reverse($bakvers) as $bakver) {
821
			$toreturn[] = array('time' => $bakver, 'description' => $confvers[$bakver]['description'], 'version' => $confvers[$bakver]['version'], 'filesize' => $confvers[$bakver]['filesize']);
822
		}
823
	} else {
824
		return false;
825
	}
826
	$toreturn['versions'] = $bakvers;
827
	return $toreturn;
828
}
829

    
830
function backup_config() {
831
	global $config, $g;
832

    
833

    
834
	/* Create backup directory if needed */
835
	safe_mkdir("{$g['cf_conf_path']}/backup");
836
	if ($config['revision']['time'] == "") {
837
		$baktime = 0;
838
	} else {
839
		$baktime = $config['revision']['time'];
840
	}
841

    
842
	if ($config['revision']['description'] == "") {
843
		$bakdesc = "Unknown";
844
	} else {
845
		$bakdesc = $config['revision']['description'];
846
	}
847

    
848
	$bakver = ($config['version'] == "") ? "?" : $config['version'];
849
	$bakfilename = $g['cf_conf_path'] . '/backup/config-' . $baktime . '.xml';
850
	copy($g['cf_conf_path'] . '/config.xml', $bakfilename);
851

    
852
	if (file_exists($g['cf_conf_path'] . '/backup/backup.cache')) {
853
		$backupcache = unserialize(file_get_contents($g['cf_conf_path'] . '/backup/backup.cache'));
854
	} else {
855
		$backupcache = array();
856
	}
857
	$backupcache[$baktime] = array('description' => $bakdesc, 'version' => $bakver, 'filesize' => filesize($bakfilename));
858
	$bakout = fopen($g['cf_conf_path'] . '/backup/backup.cache', "w");
859
	fwrite($bakout, serialize($backupcache));
860
	fclose($bakout);
861
	pfSense_fsync("{$g['cf_conf_path']}/backup/backup.cache");
862

    
863

    
864
	return true;
865
}
866

    
867
function set_device_perms() {
868
	$devices = array(
869
		'pf' => array(
870
			'user' => 'root',
871
			'group' => 'proxy',
872
			'mode' => 0660),
873
		);
874

    
875
	foreach ($devices as $name => $attr) {
876
		$path = "/dev/$name";
877
		if (file_exists($path)) {
878
			chown($path, $attr['user']);
879
			chgrp($path, $attr['group']);
880
			chmod($path, $attr['mode']);
881
		}
882
	}
883
}
884

    
885
function get_config_user() {
886
	if (empty($_SESSION["Username"])) {
887
		$username = getenv("USER");
888
		if (empty($conuser) || $conuser == "root") {
889
			$username = "(system)";
890
		}
891
	} else {
892
		$username = $_SESSION["Username"];
893
	}
894

    
895
	if (!empty($_SERVER['REMOTE_ADDR'])) {
896
		$username .= '@' . $_SERVER['REMOTE_ADDR'];
897
	}
898

    
899
	return $username;
900
}
901

    
902
function make_config_revision_entry($desc = null, $override_user = null) {
903
	if (empty($override_user)) {
904
		$username = get_config_user();
905
	} else {
906
		$username = $override_user;
907
	}
908

    
909
	$revision = array();
910

    
911
	if (time() > mktime(0, 0, 0, 9, 1, 2004)) {     /* make sure the clock settings are plausible */
912
		$revision['time'] = time();
913
	}
914

    
915
	/* Log the running script so it's not entirely unlogged what changed */
916
	if ($desc == "Unknown") {
917
		$desc = sprintf(gettext("%s made unknown change"), $_SERVER['SCRIPT_NAME']);
918
	}
919
	if (!empty($desc)) {
920
		$revision['description'] = "{$username}: " . $desc;
921
	}
922
	$revision['username'] = $username;
923
	return $revision;
924
}
925

    
926
function pfSense_clear_globals() {
927
	global $config, $FilterIfList, $GatewaysList, $filterdns, $aliases, $aliastable;
928

    
929
	$error = error_get_last();
930

    
931
	// Errors generated by user code (diag_commands.php) are identified by path and not added to notices
932
	if ($error !== NULL && !preg_match('|^' . preg_quote($g['tmp_path_user_code']) . '/[^/]{1,16}$|', $error['file'])) {
933
		if (in_array($error['type'], array(E_ERROR, E_COMPILE_ERROR, E_CORE_ERROR, E_RECOVERABLE_ERROR))) {
934
			$errorstr = "PHP ERROR: Type: {$error['type']}, File: {$error['file']}, Line: {$error['line']}, Message: {$error['message']}";
935
			print($errorstr);
936
			log_error($errorstr);
937
			file_notice("phperror", $errorstr, 'PHP errors');
938
		} else if ($error['type'] != E_NOTICE) {
939
			$errorstr = "PHP WARNING: Type: {$error['type']}, File: {$error['file']}, Line: {$error['line']}, Message: {$error['message']}";
940
			// XXX: comment out for now, should re-enable post-2.2
941
			//print($errorstr);
942
			//log_error($errorstr);
943
			//file_notice("phpwarning", $errorstr, 'PHP warning');
944
		}
945
	}
946

    
947
	if (isset($FilterIfList)) {
948
		unset($FilterIfList);
949
	}
950

    
951
	if (isset($GatewaysList)) {
952
		unset($GatewaysList);
953
	}
954

    
955
	/* Used for the hostname dns resolver */
956
	if (isset($filterdns)) {
957
		unset($filterdns);
958
	}
959

    
960
	/* Used for aliases and interface macros */
961
	if (isset($aliases)) {
962
		unset($aliases);
963
	}
964
	if (isset($aliastable)) {
965
		unset($aliastable);
966
	}
967

    
968
	unset($config);
969
}
970

    
971
register_shutdown_function('pfSense_clear_globals');
972

    
973
?>
(10-10/54)