monitor_tools.inc.php 22.8 KB
Newer Older
1 2 3
<?php

/*
4 5
	Copyright (c) 2007-2011, Till Brehm, projektfarm Gmbh and Oliver Vogel www.muv.com
	All rights reserved.
6

7 8
	Redistribution and use in source and binary forms, with or without modification,
	are permitted provided that the following conditions are met:
9 10

 * Redistributions of source code must retain the above copyright notice,
11
	this list of conditions and the following disclaimer.
12
 * Redistributions in binary form must reproduce the above copyright notice,
13 14
	this list of conditions and the following disclaimer in the documentation
	and/or other materials provided with the distribution.
15
 * Neither the name of ISPConfig nor the names of its contributors
16 17 18 19 20 21 22 23 24 25 26 27 28
	may be used to endorse or promote products derived from this software without
	specific prior written permission.

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
	ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
	INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
	BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
	EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 30 31 32 33 34 35 36 37
 */

class monitor_tools {

	//** Get distribution identifier
	//** IMPORTANT!
	//   This is the same code as in install/lib/install.lib.php
	//   So if you change it here, you also have to change it in there!
	//   Please do not forget to remove the swriteln(); - lines here at this file
38
	function get_distname() {
39

40 41 42 43
	$distname = '';
	$distver = '';
	$distid = '';
	$distbaseid = '';
44

45 46 47 48 49 50 51 52 53 54 55
	//** Debian or Ubuntu
	if(file_exists('/etc/debian_version')) {
		
		// Check if this is Ubuntu and not Debian
		if (strstr(trim(file_get_contents('/etc/issue')), 'Ubuntu') || (is_file('/etc/os-release') && stristr(file_get_contents('/etc/os-release'), 'Ubuntu'))) {
			
			$issue = file_get_contents('/etc/issue');
			
			// Use content of /etc/issue file
			if(strstr($issue,'Ubuntu')) {
				if (strstr(trim($issue), 'LTS')) {
tbrehm's avatar
tbrehm committed
56 57 58 59 60
					$lts=" LTS";
				} else {
					$lts="";
				}

61 62 63
				$distname = 'Ubuntu';
				$distid = 'debian40';
				$distbaseid = 'debian';
64
				$ver = explode(' ', $issue);
65 66
				$ver = array_filter($ver);
				$ver = next($ver);
67
				$mainver = explode('.', $ver);
68 69
				$mainver = array_filter($mainver);
				$mainver = current($mainver).'.'.next($mainver);
70
			// Use content of /etc/os-release file
71
			} else {
72 73 74 75 76 77 78 79
				$os_release = file_get_contents('/etc/os-release');
				if (strstr(trim($os_release), 'LTS')) {
					$lts = " LTS";
				} else {
					$lts = "";
				}
				
				$distname = 'Ubuntu';
80 81
				$distid = 'debian40';
				$distbaseid = 'debian';
82 83 84 85 86 87 88 89

				preg_match("/.*VERSION=\"(.*)\".*/ui", $os_release, $ver);
				$ver = str_replace("LTS", "", $ver[1]);
				$ver = explode(" ", $ver, 2);
				$ver = reset($ver);
				$mainver = $ver;
			}
			switch ($mainver){
90 91 92 93
			case "18.04":
				$relname = "(Bionic Beaver)";
				$distconfid = 'ubuntu1804';
				break;
94 95 96 97
			case "17.10":
				$relname = "(Artful Aardvark)";
				$distconfid = 'ubuntu1710';
				break;
98 99 100 101
			case "17.04":
				$relname = "(Zesty Zapus)";
				$distconfid = 'ubuntu1604';
				break;
102 103 104 105
			case "16.10":
				$relname = "(Yakkety Yak)";
				$distconfid = 'ubuntu1604';
				break;
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
			case "16.04":
				$relname = "(Xenial Xerus)";
				$distconfid = 'ubuntu1604';
				break;
			case "15.10":
				$relname = "(Wily Werewolf)";
				break;
			case "15.04":
				$relname = "(Vivid Vervet)";
				break;
			case "14.10":
				$relname = "(Utopic Unicorn)";
				break;
			case "14.04":
				$relname = "(Trusty Tahr)";
				break;
			case "13.10":
				$relname = "(Saucy Salamander)";
				break;
			case "13.04":
				$relname = "(Raring Ringtail)";
				break;
			case "12.10":
				$relname = "(Quantal Quetzal)";
				break;
			case "12.04":
				$relname = "(Precise Pangolin)";
				break;
			case "11.10":
				$relname = "(Oneiric Ocelot)";
				break;
			case "11.14":
				$relname = "(Natty Narwhal)";
				break;
			case "10.10":
				$relname = "(Maverick Meerkat)";
				break;
			case "10.04":
				$relname = "(Lucid Lynx)";
				break;
			case "9.10":
				$relname = "(Karmic Koala)";
				break;
			case "9.04":
				$relname = "(Jaunty Jackpole)";
				break;
			case "8.10":
				$relname = "(Intrepid Ibex)";
				break;
			case "8.04":
				$relname = "(Hardy Heron)";
				break;
			case "7.10":
				$relname = "(Gutsy Gibbon)";
				break;
			case "7.04":
				$relname = "(Feisty Fawn)";
				break;
			case "6.10":
				$relname = "(Edgy Eft)";
				break;
			case "6.06":
				$relname = "(Dapper Drake)";
				break;
			case "5.10":
				$relname = "(Breezy Badger)";
				break;
			case "5.04":
				$relname = "(Hoary Hedgehog)";
				break;
			case "4.10":
				$relname = "(Warty Warthog)";
				break;
			default:
				$relname = "UNKNOWN";
181
			}
182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
			$distver = $ver.$lts." ".$relname;
		} elseif(trim(file_get_contents('/etc/debian_version')) == '4.0') {
			$distname = 'Debian';
			$distver = '4.0';
			$distid = 'debian40';
			$distbaseid = 'debian';
		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '5.0')) {
			$distname = 'Debian';
			$distver = 'Lenny';
			$distid = 'debian40';
			$distbaseid = 'debian';
		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '6.0') || trim(file_get_contents('/etc/debian_version')) == 'squeeze/sid') {
			$distname = 'Debian';
			$distver = 'Squeeze/Sid';
			$distid = 'debian60';
			$distbaseid = 'debian';
		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '7.0') || substr(trim(file_get_contents('/etc/debian_version')),0,2) == '7.' || trim(file_get_contents('/etc/debian_version')) == 'wheezy/sid') {
			$distname = 'Debian';
			$distver = 'Wheezy/Sid';
			$distid = 'debian60';
			$distbaseid = 'debian';
		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '8') || substr(trim(file_get_contents('/etc/debian_version')),0,1) == '8') {
			$distname = 'Debian';
			$distver = 'Jessie';
			$distid = 'debian60';
			$distbaseid = 'debian';
Till Brehm's avatar
Till Brehm committed
208 209 210 211 212 213
		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '9') || substr(trim(file_get_contents('/etc/debian_version')),0,1) == '9') {
			$distname = 'Debian';
			$distver = 'Stretch';
			$distconfid = 'debian90';
			$distid = 'debian60';
			$distbaseid = 'debian';
214 215 216 217 218 219
		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '/sid')) {
			$distname = 'Debian';
			$distver = 'Testing';
			$distid = 'debian60';
			$distconfid = 'debiantesting';
			$distbaseid = 'debian';
220 221 222 223 224
		} else {
			$distname = 'Debian';
			$distver = 'Unknown';
			$distid = 'debian40';
			$distbaseid = 'debian';
225
		}
226
	}
227

228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249
	//** OpenSuSE
	elseif(file_exists('/etc/SuSE-release')) {
		if(stristr(file_get_contents('/etc/SuSE-release'), '11.0')) {
			$distname = 'openSUSE';
			$distver = '11.0';
			$distid = 'opensuse110';
			$distbaseid = 'opensuse';
		} elseif(stristr(file_get_contents('/etc/SuSE-release'), '11.1')) {
			$distname = 'openSUSE';
			$distver = '11.1';
			$distid = 'opensuse110';
			$distbaseid = 'opensuse';
		} elseif(stristr(file_get_contents('/etc/SuSE-release'), '11.2')) {
			$distname = 'openSUSE';
			$distver = '11.2';
			$distid = 'opensuse112';
			$distbaseid = 'opensuse';
		}  else {
			$distname = 'openSUSE';
			$distver = 'Unknown';
			$distid = 'opensuse112';
			$distbaseid = 'opensuse';
250
		}
251
	}
252 253


254 255
	//** Redhat
	elseif(file_exists('/etc/redhat-release')) {
256

257
		$content = file_get_contents('/etc/redhat-release');
258

259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288
		if(stristr($content, 'Fedora release 9 (Sulphur)')) {
			$distname = 'Fedora';
			$distver = '9';
			$distid = 'fedora9';
			$distbaseid = 'fedora';
		} elseif(stristr($content, 'Fedora release 10 (Cambridge)')) {
			$distname = 'Fedora';
			$distver = '10';
			$distid = 'fedora9';
			$distbaseid = 'fedora';
		} elseif(stristr($content, 'Fedora release 10')) {
			$distname = 'Fedora';
			$distver = '11';
			$distid = 'fedora9';
			$distbaseid = 'fedora';
		} elseif(stristr($content, 'CentOS release 5.2 (Final)')) {
			$distname = 'CentOS';
			$distver = '5.2';
			$distid = 'centos52';
			$distbaseid = 'fedora';
		} elseif(stristr($content, 'CentOS release 5.3 (Final)')) {
			$distname = 'CentOS';
			$distver = '5.3';
			$distid = 'centos53';
			$distbaseid = 'fedora';
		} elseif(stristr($content, 'CentOS release 5')) {
			$distname = 'CentOS';
			$distver = 'Unknown';
			$distid = 'centos53';
			$distbaseid = 'fedora';
289
		} elseif(stristr($content, 'CentOS Linux release 6') || stristr($content, 'CentOS release 6')) {
290 291 292 293 294 295 296 297
			$distname = 'CentOS';
			$distver = 'Unknown';
			$distid = 'centos53';
			$distbaseid = 'fedora';
		} elseif(stristr($content, 'CentOS Linux release 7')) {
			$distname = 'CentOS';
			$distver = 'Unknown';
			$distbaseid = 'fedora';
298 299 300 301 302 303 304 305
			$var=explode(" ", $content);
			$var=explode(".", $var[3]);
			$var=$var[0].".".$var[1];
			if($var=='7.0' || $var=='7.1') {
				$distid = 'centos70';
			} else {
				$distid = 'centos72';
			}
306 307 308 309 310
		} else {
			$distname = 'Redhat';
			$distver = 'Unknown';
			$distid = 'fedora9';
			$distbaseid = 'fedora';
311
		}
312
	}
313

314 315
	//** Gentoo
	elseif(file_exists('/etc/gentoo-release')) {
316

317
		$content = file_get_contents('/etc/gentoo-release');
318

319 320 321 322 323 324 325 326 327 328 329 330
		preg_match_all('/([0-9]{1,2})/', $content, $version);
		$distname = 'Gentoo';
		$distver = $version[0][0].$version[0][1];
		$distid = 'gentoo';
		$distbaseid = 'gentoo';

	} else {
		die('Unrecognized GNU/Linux distribution');
	}
	
	// Set $distconfid to distid, if no different id for the config is defined
	if(!isset($distconfid)) $distconfid = $distid;
331

332
	return array('name' => $distname, 'version' => $distver, 'id' => $distid, 'confid' => $distconfid, 'baseid' => $distbaseid);
333 334
	}

335
	// this function remains in the tools class, because it is used by cron AND rescue
336
	public function monitorServices() {
vogelor's avatar
vogelor committed
337
		global $app;
338 339
		global $conf;

340
		/** the id of the server as int */
341 342


343 344
		$server_id = intval($conf['server_id']);

345
		/**  get the "active" Services of the server from the DB */
346
		$services = $app->db->queryOneRecord('SELECT * FROM server WHERE server_id = ?', $server_id);
347
		/*
348 349 350
		 * If the DB is down, we have to set the db to "yes".
		 * If we don't do this, then the monitor will NOT monitor, that the db is down and so the
		 * rescue-module can not try to rescue the db
351
		 */
352 353
		if ($services == null) {
			$services['db_server'] = 1;
354 355
		}

356 357
		/* The type of the Monitor-data */
		$type = 'services';
358

359 360 361 362
		/** the State of the monitoring */
		/* ok, if ALL active services are running,
		 * error, if not
		 * There is no other state!
363 364 365
		 */
		$state = 'ok';

366 367 368 369 370
		/* Monitor Webserver */
		$data['webserver'] = -1; // unknown - not needed
		if ($services['web_server'] == 1) {
			if ($this->_checkTcp('localhost', 80)) {
				$data['webserver'] = 1;
371
			} else {
372 373
				$data['webserver'] = 0;
				$state = 'error'; // because service is down
374 375 376
			}
		}

377 378 379 380 381 382 383 384
		/* Monitor FTP-Server */
		$data['ftpserver'] = -1; // unknown - not needed
		if ($services['file_server'] == 1) {
			if ($this->_checkFtp('localhost', 21)) {
				$data['ftpserver'] = 1;
			} else {
				$data['ftpserver'] = 0;
				$state = 'error'; // because service is down
385 386 387
			}
		}

388 389 390 391 392 393 394 395 396 397
		/* Monitor SMTP-Server */
		$data['smtpserver'] = -1; // unknown - not needed
		if ($services['mail_server'] == 1) {
			if ($this->_checkTcp('localhost', 25)) {
				$data['smtpserver'] = 1;
			} else {
				$data['smtpserver'] = 0;
				$state = 'error'; // because service is down
			}
		}
398

399 400 401 402 403 404 405 406 407 408
		/* Monitor POP3-Server */
		$data['pop3server'] = -1; // unknown - not needed
		if ($services['mail_server'] == 1) {
			if ($this->_checkTcp('localhost', 110)) {
				$data['pop3server'] = 1;
			} else {
				$data['pop3server'] = 0;
				$state = 'error'; // because service is down
			}
		}
409

410 411 412 413 414 415 416 417 418 419
		/* Monitor IMAP-Server */
		$data['imapserver'] = -1; // unknown - not needed
		if ($services['mail_server'] == 1) {
			if ($this->_checkTcp('localhost', 143)) {
				$data['imapserver'] = 1;
			} else {
				$data['imapserver'] = 0;
				$state = 'error'; // because service is down
			}
		}
420

421 422 423 424 425 426 427 428 429 430
		/* Monitor BIND-Server */
		$data['bindserver'] = -1; // unknown - not needed
		if ($services['dns_server'] == 1) {
			if ($this->_checkUdp('localhost', 53)) {
				$data['bindserver'] = 1;
			} else {
				$data['bindserver'] = 0;
				$state = 'error'; // because service is down
			}
		}
431

432 433 434 435 436 437 438 439 440 441
		/* Monitor MySQL Server */
		$data['mysqlserver'] = -1; // unknown - not needed
		if ($services['db_server'] == 1) {
			if ($this->_checkTcp('localhost', 3306)) {
				$data['mysqlserver'] = 1;
			} else {
				$data['mysqlserver'] = 0;
				$state = 'error'; // because service is down
			}
		}
Florian Schaal's avatar
Florian Schaal committed
442
/*
443 444 445 446 447
		$data['mongodbserver'] = -1;
		if ($this->_checkTcp('localhost', 27017)) {
			$data['mongodbserver'] = 1;
		} else {
			$data['mongodbserver'] = 0;
Florian Schaal's avatar
Florian Schaal committed
448
*/
449 450
			//$state = 'error'; // because service is down
			/* TODO!!! check if this is a mongodbserver at all, otherwise it will always throw an error state!!! */
Florian Schaal's avatar
Florian Schaal committed
451
//		}
452 453 454 455 456 457 458 459 460 461

		/*
		 * Return the Result
		 */
		$res['server_id'] = $server_id;
		$res['type'] = $type;
		$res['data'] = $data;
		$res['state'] = $state;
		return $res;
	}
462

463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479
	public function _getLogData($log) {
		global $conf;

		$dist = '';
		$logfile = '';

		if (@is_file('/etc/debian_version')) {
			$dist = 'debian';
		} elseif (@is_file('/etc/redhat-release')) {
			$dist = 'redhat';
		} elseif (@is_file('/etc/SuSE-release')) {
			$dist = 'suse';
		} elseif (@is_file('/etc/gentoo-release')) {
			$dist = 'gentoo';
		}

		switch ($log) {
480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584
		case 'log_mail':
			if ($dist == 'debian') {
				$logfile = '/var/log/mail.log';
			} elseif ($dist == 'redhat') {
				$logfile = '/var/log/maillog';
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/mail.info';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/maillog';
			}
			break;
		case 'log_mail_warn':
			if ($dist == 'debian') {
				$logfile = '/var/log/mail.warn';
			} elseif ($dist == 'redhat') {
				$logfile = '/var/log/maillog';
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/mail.warn';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/maillog';
			}
			break;
		case 'log_mail_err':
			if ($dist == 'debian') {
				$logfile = '/var/log/mail.err';
			} elseif ($dist == 'redhat') {
				$logfile = '/var/log/maillog';
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/mail.err';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/maillog';
			}
			break;
		case 'log_messages':
			if ($dist == 'debian') {
				$logfile = '/var/log/syslog';
			} elseif ($dist == 'redhat') {
				$logfile = '/var/log/messages';
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/messages';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/messages';
			}
			break;
		case 'log_ispc_cron':
			if ($dist == 'debian') {
				$logfile = $conf['ispconfig_log_dir'] . '/cron.log';
			} elseif ($dist == 'redhat') {
				$logfile = $conf['ispconfig_log_dir'] . '/cron.log';
			} elseif ($dist == 'suse') {
				$logfile = $conf['ispconfig_log_dir'] . '/cron.log';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/cron';
			}
			break;
		case 'log_freshclam':
			if ($dist == 'debian') {
				$logfile = '/var/log/clamav/freshclam.log';
			} elseif ($dist == 'redhat') {
				$logfile = (is_file('/var/log/clamav/freshclam.log') ? '/var/log/clamav/freshclam.log' : '/var/log/freshclam.log');
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/freshclam.log';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/clamav/freshclam.log';
			}
			break;
		case 'log_clamav':
			if ($dist == 'debian') {
				$logfile = '/var/log/clamav/clamav.log';
			} elseif ($dist == 'redhat') {
				$logfile = (is_file('/var/log/clamav/clamd.log') ? '/var/log/clamav/clamd.log' : '/var/log/maillog');
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/clamd.log';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/clamav/clamd.log';
			}
			break;
		case 'log_fail2ban':
			if ($dist == 'debian') {
				$logfile = '/var/log/fail2ban.log';
			} elseif ($dist == 'redhat') {
				$logfile = '/var/log/fail2ban.log';
			} elseif ($dist == 'suse') {
				$logfile = '/var/log/fail2ban.log';
			} elseif ($dist == 'gentoo') {
				$logfile = '/var/log/fail2ban.log';
			}
			break;
		case 'log_mongodb':
			$logfile = '/var/log/mongodb/mongodb.log';
			break;
		case 'log_ispconfig':
			if ($dist == 'debian') {
				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
			} elseif ($dist == 'redhat') {
				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
			} elseif ($dist == 'suse') {
				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
			} elseif ($dist == 'gentoo') {
				$logfile = $conf['ispconfig_log_dir'] . '/ispconfig.log';
			}
			break;
		default:
			$logfile = '';
			break;
585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614
		}

		// Getting the logfile content
		if ($logfile != '') {
			$logfile = escapeshellcmd($logfile);
			if (stristr($logfile, ';') or substr($logfile, 0, 9) != '/var/log/' or stristr($logfile, '..')) {
				$log = 'Logfile path error.';
			} else {
				$log = '';
				if (is_readable($logfile)) {
					$fd = popen('tail -n 100 ' . $logfile, 'r');
					if ($fd) {
						while (!feof($fd)) {
							$log .= fgets($fd, 4096);
							$n++;
							if ($n > 1000)
								break;
						}
						fclose($fd);
					}
				} else {
					$log = 'Unable to read ' . $logfile;
				}
			}
		}

		return $log;
	}

	private function _checkTcp($host, $port) {
615
		/* Try to open a connection */
616 617 618
		$fp = @fsockopen($host, $port, $errno, $errstr, 2);

		if ($fp) {
619
			/*
620 621
			 * We got a connection, this means, everything is O.K.
			 * But maybe we are able to do more deep testing?
622
			 */
623 624 625 626 627 628
			if ($port == 80) {
				/*
				 * Port 80 means, testing APACHE
				 * So we can do a deepter test and try to get data over this connection.
				 * (if apache hangs, we get a connection but a timeout by trying to GET the data!)
				 */
629 630 631 632 633 634 635
				// fwrite($fp, "GET / HTTP/1.0\r\n\r\n");
				$out = "GET / HTTP/1.1\r\n";
				$out .= "Host: localhost\r\n";
				$out .= "User-Agent: Mozilla/5.0 (ISPConfig monitor)\r\n";
				$out .= "Accept: application/xml,application/xhtml+xml,text/html\r\n";
				$out .= "Connection: Close\r\n\r\n";
				fwrite($fp, $out);
636 637 638 639 640 641
				stream_set_timeout($fp, 5); // Timeout after 5 seconds
				$res = fread($fp, 10);  // try to get 10 bytes (enough to test!)
				$info = stream_get_meta_data($fp);
				if ($info['timed_out']) {
					return false; // Apache was not able to send data over this connection
				}
642
			}
643 644 645 646 647

			/* The connection is no longer needed */
			fclose($fp);
			/* We are able to establish a connection */
			return true;
648
		} else {
649 650
			/* We are NOT able to establish a connection */
			return false;
651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676
		}
	}

	private function _checkUdp($host, $port) {

		$fp = @fsockopen('udp://' . $host, $port, $errno, $errstr, 2);

		if ($fp) {
			fclose($fp);
			return true;
		} else {
			return false;
		}
	}

	private function _checkFtp($host, $port) {

		$conn_id = @ftp_connect($host, $port);

		if ($conn_id) {
			@ftp_close($conn_id);
			return true;
		} else {
			return false;
		}
	}
677 678 679 680 681 682 683 684 685

	/**
	 * Set the state to the given level (or higher, but not lesser).
	 * * If the actual state is critical and you call the method with ok,
	 *   then the state is critical.
	 *
	 * * If the actual state is critical and you call the method with error,
	 *   then the state is error.
	 */
686
	public function _setState($oldState, $newState) {
687 688 689 690
		/*
		 * Calculate the weight of the old state
		 */
		switch ($oldState) {
691 692 693 694 695 696 697 698 699 700 701 702 703 704
		case 'no_state': $oldInt = 0;
			break;
		case 'ok': $oldInt = 1;
			break;
		case 'unknown': $oldInt = 2;
			break;
		case 'info': $oldInt = 3;
			break;
		case 'warning': $oldInt = 4;
			break;
		case 'critical': $oldInt = 5;
			break;
		case 'error': $oldInt = 6;
			break;
705 706 707 708 709
		}
		/*
		 * Calculate the weight of the new state
		 */
		switch ($newState) {
710 711 712 713 714 715 716 717 718 719 720 721 722 723
		case 'no_state': $newInt = 0;
			break;
		case 'ok': $newInt = 1;
			break;
		case 'unknown': $newInt = 2;
			break;
		case 'info': $newInt = 3;
			break;
		case 'warning': $newInt = 4;
			break;
		case 'critical': $newInt = 5;
			break;
		case 'error': $newInt = 6;
			break;
724 725 726 727 728 729 730 731 732 733 734
		}

		/*
		 * Set to the higher level
		 */
		if ($newInt > $oldInt) {
			return $newState;
		} else {
			return $oldState;
		}
	}
735

736 737 738 739 740 741 742 743 744 745 746
	/**
	 * Deletes Records older than 4 minutes.
	 * The monitor writes new data every 5 minutes or longer (4 hour, 1 day).
	 * So if i delete all Date older than 4 minutes i can be sure, that all old data
	 * are deleted...
	 */
	public function delOldRecords($type, $serverId) {
		global $app;

		// $now = time();
		// $old = $now - (4 * 60); // 4 minutes
747
		$old = 240; //seconds
748 749 750 751 752 753 754 755 756

		/*
		 * ATTENTION if i do NOT pay attention of the server id, i delete all data (of the type)
		 * of ALL servers. This means, if i have a multiserver-environment and a server has a
		 * time not synced with the others (for example, all server has 11:00 and ONE server has
		 * 10:45) then the actual data of this server (with the time-stamp 10:45) get lost
		 * even though it is the NEWEST data of this server. To avoid this i HAVE to include
		 * the server-id!
		 */
757
		$sql = 'DELETE FROM `monitor_data` WHERE `type` = ? AND `created` < UNIX_TIMESTAMP() - ? AND `server_id` = ?';
758
		$app->dbmaster->query($sql, $type, $old, $serverId);
759 760
	}

761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782
	public function send_notification_email($template, $placeholders, $recipients) {
		global $conf;

		if(!is_array($recipients) || count($recipients) < 1) return false;
		if(!is_array($placeholders)) $placeholders = array();

		if(file_exists($conf['rootpath'].'/conf-custom/mail/' . $template . '_'.$conf['language'].'.txt')) {
			$lines = file($conf['rootpath'].'/conf-custom/mail/' . $template . '_'.$conf['language'].'.txt');
		} elseif(file_exists($conf['rootpath'].'/conf-custom/mail/' . $template . '_en.txt')) {
			$lines = file($conf['rootpath'].'/conf-custom/mail/' . $template . '_en.txt');
		} elseif(file_exists($conf['rootpath'].'/conf/mail/' . $template . '_'.$conf['language'].'.txt')) {
			$lines = file($conf['rootpath'].'/conf/mail/' . $template . '_'.$conf['language'].'.txt');
		} else {
			$lines = file($conf['rootpath'].'/conf/mail/' . $template . '_en.txt');
		}

		//* get mail headers, subject and body
		$mailHeaders = '';
		$mailBody = '';
		$mailSubject = '';
		$inHeader = true;
		for($l = 0; $l < count($lines); $l++) {
783
			if(trim($lines[$l]) == '') {
784 785 786 787 788
				$inHeader = false;
				continue;
			}
			if($inHeader == true) {
				$parts = explode(':', $lines[$l], 2);
789 790 791 792
				if(strtolower($parts[0]) == 'subject') {
					$mailSubject = trim($parts[1]);
					continue;
				}
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816
				unset($parts);
				$mailHeaders .= trim($lines[$l]) . "\n";
			} else {
				$mailBody .= trim($lines[$l]) . "\n";
			}
		}
		$mailBody = trim($mailBody);

		//* Replace placeholders
		$mailHeaders = strtr($mailHeaders, $placeholders);
		$mailSubject = strtr($mailSubject, $placeholders);
		$mailBody = strtr($mailBody, $placeholders);

		for($r = 0; $r < count($recipients); $r++) {
			mail($recipients[$r], $mailSubject, $mailBody, $mailHeaders);
		}

		unset($mailSubject);
		unset($mailHeaders);
		unset($mailBody);
		unset($lines);

		return true;
	}
817

818 819
}

820
?>