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1
<?php
2
/*
3
 * config.lib.inc
4
 *
5
 * part of pfSense (https://www.pfsense.org)
6
 * Copyright (c) 2004-2018 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'."), get_config_user()));
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
	// Try the core AutoConfigBackup system
548
	if (is_array($config['system']['acb']) && $config['system']['acb']['enable'] == "yes") {
549
		require_once("acb.inc");
550
		upload_config();
551
	}
552

    
553
	return $config;
554
}
555

    
556
/****f* config/reset_factory_defaults
557
 * NAME
558
 *   reset_factory_defaults - Reset the system to its default configuration.
559
 * RESULT
560
 *   integer	- indicates completion
561
 ******/
562
function reset_factory_defaults($lock = false, $reboot_required = true) {
563
	global $config, $g;
564

    
565
	/* Remove all additional packages */
566
	mwexec("/bin/sh /usr/local/sbin/{$g['product_name']}-upgrade " .
567
	    "-r ALL_PACKAGES -f");
568

    
569
	if (!$lock) {
570
		$lockkey = lock('config', LOCK_EX);
571
	}
572

    
573
	/* create conf directory, if necessary */
574
	safe_mkdir($g['cf_conf_path']);
575

    
576
	/* clear out /conf */
577
	$dh = opendir($g['conf_path']);
578
	while ($filename = readdir($dh)) {
579
		if (($filename != ".") && ($filename != "..") &&
580
		    (!is_dir($g['conf_path'] . "/" . $filename))) {
581
			unlink_if_exists($g['conf_path'] . "/" . $filename);
582
		}
583
	}
584
	closedir($dh);
585
	unlink_if_exists($g['tmp_path'] . "/config.cache");
586

    
587
	/* copy default configuration */
588
	copy("{$g['conf_default_path']}/config.xml",
589
	    "{$g['cf_conf_path']}/config.xml");
590

    
591
	disable_security_checks();
592

    
593
	/*
594
	   Let write_config know that we are awaiting reload of the current config
595
	   to factory defaults. Either the system is about to reboot, throwing away
596
	   the current in-memory config as it shuts down, or the in-memory config
597
	   is about to be reloaded on-the-fly by parse_config.
598

    
599
	   In both cases, we want to ensure that write_config does not flush the
600
	   in-memory config back to disk.
601
	*/
602
	$config['reset_factory_defaults'] = true;
603

    
604
	/* call the wizard */
605
	if ($reboot_required) {
606
		// If we need a reboot first then touch a different trigger file.
607
		touch("/conf/trigger_initial_wizard_after_reboot");
608
	} else {
609
		touch("/conf/trigger_initial_wizard");
610
	}
611
	if (!$lock) {
612
		unlock($lockkey);
613
	}
614
	setup_serial_port();
615
	return 0;
616
}
617

    
618
function config_restore($conffile) {
619
	global $config, $g;
620

    
621
	if (!file_exists($conffile)) {
622
		return 1;
623
	}
624

    
625
	backup_config();
626

    
627

    
628
	$lockkey = lock('config', LOCK_EX);
629

    
630
	unlink_if_exists("{$g['tmp_path']}/config.cache");
631
	copy($conffile, "{$g['cf_conf_path']}/config.xml");
632

    
633
	disable_security_checks();
634

    
635
	unlock($lockkey);
636

    
637
	$config = parse_config(true);
638

    
639

    
640
	write_config(sprintf(gettext("Reverted to %s."), array_pop(explode("/", $conffile))), false);
641

    
642
	return 0;
643
}
644

    
645
function config_install($conffile) {
646
	global $config, $g;
647

    
648
	if (!file_exists($conffile)) {
649
		return 1;
650
	}
651

    
652
	if (!config_validate("{$conffile}")) {
653
		return 1;
654
	}
655

    
656
	if (platform_booting()) {
657
		echo gettext("Installing configuration...") . "\n";
658
	} else {
659
		log_error(gettext("Installing configuration ...."));
660
	}
661

    
662
	$lockkey = lock('config', LOCK_EX);
663

    
664
	copy($conffile, "{$g['conf_path']}/config.xml");
665

    
666
	disable_security_checks();
667

    
668
	/* unlink cache file if it exists */
669
	if (file_exists("{$g['tmp_path']}/config.cache")) {
670
		unlink("{$g['tmp_path']}/config.cache");
671
	}
672

    
673
	unlock($lockkey);
674

    
675
	return 0;
676
}
677

    
678
/*
679
 * Disable security checks for DNS rebind and HTTP referrer until next time
680
 * they pass (or reboot), to aid in preventing accidental lockout when
681
 * restoring settings like hostname, domain, IP addresses, and settings
682
 * related to the DNS rebind and HTTP referrer checks.
683
 * Intended for use when restoring a configuration or directly
684
 * modifying config.xml without an unconditional reboot.
685
 */
686
function disable_security_checks() {
687
	global $g;
688
	touch("{$g['tmp_path']}/disable_security_checks");
689
}
690

    
691
/* Restores security checks.  Should be called after all succeed. */
692
function restore_security_checks() {
693
	global $g;
694
	unlink_if_exists("{$g['tmp_path']}/disable_security_checks");
695
}
696

    
697
/* Returns status of security check temporary disable. */
698
function security_checks_disabled() {
699
	global $g;
700
	return file_exists("{$g['tmp_path']}/disable_security_checks");
701
}
702

    
703
function config_validate($conffile) {
704

    
705
	global $g, $xmlerr;
706

    
707
	$xml_parser = xml_parser_create();
708

    
709
	if (!($fp = fopen($conffile, "r"))) {
710
		$xmlerr = gettext("XML error: unable to open file");
711
		return false;
712
	}
713

    
714
	while ($data = fread($fp, 4096)) {
715
		if (!xml_parse($xml_parser, $data, feof($fp))) {
716
			$xmlerr = sprintf(gettext('%1$s at line %2$d'),
717
						xml_error_string(xml_get_error_code($xml_parser)),
718
						xml_get_current_line_number($xml_parser));
719
			return false;
720
		}
721
	}
722
	xml_parser_free($xml_parser);
723

    
724
	fclose($fp);
725

    
726
	return true;
727
}
728

    
729
function cleanup_backupcache($lock = false) {
730
	global $config, $g;
731
	$i = false;
732

    
733
	$revisions = intval(is_numericint($config['system']['backupcount']) ? $config['system']['backupcount'] : $g['default_config_backup_count']);
734

    
735
	if (!$lock) {
736
		$lockkey = lock('config');
737
	}
738

    
739

    
740
	$backups = get_backups();
741
	if ($backups) {
742
		$baktimes = $backups['versions'];
743
		unset($backups['versions']);
744
	} else {
745
		$backups = array();
746
		$baktimes = array();
747
	}
748
	$newbaks = array();
749
	$bakfiles = glob($g['cf_conf_path'] . "/backup/config-*");
750
	$tocache = array();
751

    
752
	foreach ($bakfiles as $backup) { // Check for backups in the directory not represented in the cache.
753
		$backupsize = filesize($backup);
754
		if ($backupsize == 0) {
755
			unlink($backup);
756
			continue;
757
		}
758
		$backupexp = explode('-', $backup);
759
		$backupexp = explode('.', array_pop($backupexp));
760
		$tocheck = array_shift($backupexp);
761
		unset($backupexp);
762
		if (!in_array($tocheck, $baktimes)) {
763
			$i = true;
764
			if (platform_booting()) {
765
				echo ".";
766
			}
767
			try {
768
				$newxml = parse_xml_config($backup, array($g['xml_rootobj'], 'pfsense'));
769
			} catch (Exception $exc) {
770
				log_error(sprintf(gettext("The backup cache file %s is corrupted. Parser error message: %s"), $backup, $exc->getMessage()));
771
				$newxml = "-1";
772
			}
773

    
774
			if ($newxml == "-1") {
775
				log_error(sprintf(gettext("The backup cache file %s is corrupted.  Unlinking."), $backup));
776
				unlink($backup);
777
				continue;
778
			}
779
			if ($newxml['revision']['description'] == "") {
780
				$newxml['revision']['description'] = "Unknown";
781
			}
782
			if ($newxml['version'] == "") {
783
				$newxml['version'] = "?";
784
			}
785
			$tocache[$tocheck] = array('description' => $newxml['revision']['description'], 'version' => $newxml['version'], 'filesize' => $backupsize);
786
		}
787
	}
788
	foreach ($backups as $checkbak) {
789
		if (count(preg_grep('/' . $checkbak['time'] . '/i', $bakfiles)) != 0) {
790
			$newbaks[] = $checkbak;
791
		} else {
792
			$i = true;
793
			if (platform_booting()) print " " . $tocheck . "r";
794
		}
795
	}
796
	foreach ($newbaks as $todo) {
797
		$tocache[$todo['time']] = array('description' => $todo['description'], 'version' => $todo['version'], 'filesize' => $todo['filesize']);
798
	}
799
	if (is_int($revisions) and (count($tocache) > $revisions)) {
800
		$toslice = array_slice(array_keys($tocache), 0, $revisions);
801
		$newcache = array();
802
		foreach ($toslice as $sliced) {
803
			$newcache[$sliced] = $tocache[$sliced];
804
		}
805
		foreach ($tocache as $version => $versioninfo) {
806
			if (!in_array($version, array_keys($newcache))) {
807
				unlink_if_exists($g['conf_path'] . '/backup/config-' . $version . '.xml');
808
			}
809
		}
810
		$tocache = $newcache;
811
	}
812
	$bakout = fopen($g['cf_conf_path'] . '/backup/backup.cache', "w");
813
	fwrite($bakout, serialize($tocache));
814
	fclose($bakout);
815
	pfSense_fsync("{$g['cf_conf_path']}/backup/backup.cache");
816

    
817
	if (!$lock) {
818
		unlock($lockkey);
819
	}
820
}
821

    
822
function get_backups() {
823
	global $g;
824
	if (file_exists("{$g['cf_conf_path']}/backup/backup.cache")) {
825
		$confvers = unserialize(file_get_contents("{$g['cf_conf_path']}/backup/backup.cache"));
826
		$bakvers = array_keys($confvers);
827
		$toreturn = array();
828
		sort($bakvers);
829
		// 	$bakvers = array_reverse($bakvers);
830
		foreach (array_reverse($bakvers) as $bakver) {
831
			$toreturn[] = array('time' => $bakver, 'description' => $confvers[$bakver]['description'], 'version' => $confvers[$bakver]['version'], 'filesize' => $confvers[$bakver]['filesize']);
832
		}
833
	} else {
834
		return false;
835
	}
836
	$toreturn['versions'] = $bakvers;
837
	return $toreturn;
838
}
839

    
840
function backup_config() {
841
	global $config, $g;
842

    
843

    
844
	/* Create backup directory if needed */
845
	safe_mkdir("{$g['cf_conf_path']}/backup");
846
	if ($config['revision']['time'] == "") {
847
		$baktime = 0;
848
	} else {
849
		$baktime = $config['revision']['time'];
850
	}
851

    
852
	if ($config['revision']['description'] == "") {
853
		$bakdesc = "Unknown";
854
	} else {
855
		$bakdesc = $config['revision']['description'];
856
	}
857

    
858
	$bakver = ($config['version'] == "") ? "?" : $config['version'];
859
	$bakfilename = $g['cf_conf_path'] . '/backup/config-' . $baktime . '.xml';
860
	copy($g['cf_conf_path'] . '/config.xml', $bakfilename);
861

    
862
	if (file_exists($g['cf_conf_path'] . '/backup/backup.cache')) {
863
		$backupcache = unserialize(file_get_contents($g['cf_conf_path'] . '/backup/backup.cache'));
864
	} else {
865
		$backupcache = array();
866
	}
867
	$backupcache[$baktime] = array('description' => $bakdesc, 'version' => $bakver, 'filesize' => filesize($bakfilename));
868
	$bakout = fopen($g['cf_conf_path'] . '/backup/backup.cache', "w");
869
	fwrite($bakout, serialize($backupcache));
870
	fclose($bakout);
871
	pfSense_fsync("{$g['cf_conf_path']}/backup/backup.cache");
872

    
873

    
874
	return true;
875
}
876

    
877
function set_device_perms() {
878
	$devices = array(
879
		'pf' => array(
880
			'user' => 'root',
881
			'group' => 'proxy',
882
			'mode' => 0660),
883
		);
884

    
885
	foreach ($devices as $name => $attr) {
886
		$path = "/dev/$name";
887
		if (file_exists($path)) {
888
			chown($path, $attr['user']);
889
			chgrp($path, $attr['group']);
890
			chmod($path, $attr['mode']);
891
		}
892
	}
893
}
894

    
895
function get_config_user() {
896
	if (empty($_SESSION["Username"])) {
897
		$username = getenv("USER");
898
		if (empty($conuser) || $conuser == "root") {
899
			$username = "(system)";
900
		}
901
	} else {
902
		$username = $_SESSION["Username"];
903
	}
904

    
905
	if (!empty($_SERVER['REMOTE_ADDR'])) {
906
		$username .= '@' . get_user_remote_address() . get_user_remote_authsource();
907
	}
908

    
909
	return $username;
910
}
911

    
912
function make_config_revision_entry($desc = null, $override_user = null) {
913
	if (empty($override_user)) {
914
		$username = get_config_user();
915
	} else {
916
		$username = $override_user;
917
	}
918

    
919
	$revision = array();
920

    
921
	if (time() > mktime(0, 0, 0, 9, 1, 2004)) {     /* make sure the clock settings are plausible */
922
		$revision['time'] = time();
923
	}
924

    
925
	/* Log the running script so it's not entirely unlogged what changed */
926
	if ($desc == "Unknown") {
927
		$desc = sprintf(gettext("%s made unknown change"), $_SERVER['SCRIPT_NAME']);
928
	}
929
	if (!empty($desc)) {
930
		$revision['description'] = "{$username}: " . $desc;
931
	}
932
	$revision['username'] = $username;
933
	return $revision;
934
}
935

    
936
function pfSense_clear_globals() {
937
	global $config, $FilterIfList, $GatewaysList, $filterdns, $aliases, $aliastable;
938

    
939
	$error = error_get_last();
940

    
941
	// Errors generated by user code (diag_commands.php) are identified by path and not added to notices
942
	if ($error !== NULL && !preg_match('|^' . preg_quote($g['tmp_path_user_code']) . '/[^/]{1,16}$|', $error['file'])) {
943
		if (in_array($error['type'], array(E_ERROR, E_COMPILE_ERROR, E_CORE_ERROR, E_RECOVERABLE_ERROR))) {
944
			$errorstr = "PHP ERROR: Type: {$error['type']}, File: {$error['file']}, Line: {$error['line']}, Message: {$error['message']}";
945
			print($errorstr);
946
			log_error($errorstr);
947
			file_notice("phperror", $errorstr, 'PHP errors');
948
		} else if ($error['type'] != E_NOTICE) {
949
			$errorstr = "PHP WARNING: Type: {$error['type']}, File: {$error['file']}, Line: {$error['line']}, Message: {$error['message']}";
950
			// XXX: comment out for now, should re-enable post-2.2
951
			//print($errorstr);
952
			//log_error($errorstr);
953
			//file_notice("phpwarning", $errorstr, 'PHP warning');
954
		}
955
	}
956

    
957
	if (isset($FilterIfList)) {
958
		unset($FilterIfList);
959
	}
960

    
961
	if (isset($GatewaysList)) {
962
		unset($GatewaysList);
963
	}
964

    
965
	/* Used for the hostname dns resolver */
966
	if (isset($filterdns)) {
967
		unset($filterdns);
968
	}
969

    
970
	/* Used for aliases and interface macros */
971
	if (isset($aliases)) {
972
		unset($aliases);
973
	}
974
	if (isset($aliastable)) {
975
		unset($aliastable);
976
	}
977

    
978
	unset($config);
979
}
980

    
981
/* Initialize a config array multiple levels deep only if unset
982
 * Pass it an array of keys to test and create
983
 * init_config_arr(array('virtualip', 'vip'));
984
 */
985
function init_config_arr($keys) {
986
	global $config;
987
	$c = &$config;
988
	if (!is_array($keys)) {
989
		return null;
990
	}
991
	foreach ($keys as $k) {
992
		if (!is_array($c[$k])) {
993
			$c[$k] = array();
994
		}
995
		$c = &$c[$k];
996
	}
997
}
998

    
999
register_shutdown_function('pfSense_clear_globals');
1000

    
1001
?>
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