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<?php |
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/* |
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* MikoPBX - free phone system for small business |
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* Copyright © 2017-2023 Alexey Portnov and Nikolay Beketov |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along with this program. |
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* If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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namespace MikoPBX\Core\System\Configs; |
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use MikoPBX\Common\Models\Fail2BanRules; |
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use MikoPBX\Common\Models\NetworkFilters; |
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use MikoPBX\Common\Models\PbxSettings; |
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use MikoPBX\Common\Models\PbxSettingsConstants; |
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use MikoPBX\Common\Providers\PBXConfModulesProvider; |
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use MikoPBX\Core\System\Processes; |
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use MikoPBX\Core\System\System; |
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use MikoPBX\Core\System\Util; |
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use MikoPBX\Core\System\Verify; |
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use MikoPBX\Modules\Config\SystemConfigInterface; |
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use Phalcon\Di; |
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use Phalcon\Di\Injectable; |
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use Phalcon\Text; |
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use SQLite3; |
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/** |
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* Class Fail2BanConf |
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* |
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* Represents the Fail2Ban configuration. |
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* |
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* @package MikoPBX\Core\System\Configs |
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*/ |
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class Fail2BanConf extends Injectable |
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{ |
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private const FILTER_PATH = '/etc/fail2ban/filter.d'; |
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private const ACTION_PATH = '/etc/fail2ban/action.d'; |
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private const JAILS_DIR = '/etc/fail2ban/jail.d'; |
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private const PID_FILE = '/var/run/fail2ban/fail2ban.pid'; |
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public const FAIL2BAN_DB_PATH = '/var/lib/fail2ban/fail2ban.sqlite3'; |
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public bool $fail2ban_enable; |
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private array $allPbxSettings; |
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/** |
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* Fail2Ban constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->allPbxSettings = PbxSettings::getAllPbxSettings(); |
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$fail2ban_enable = $this->allPbxSettings['PBXFail2BanEnabled']; |
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$this->fail2ban_enable = ($fail2ban_enable === '1'); |
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} |
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/** |
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* Check fail2ban service and restart it died |
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*/ |
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public static function checkFail2ban(): void |
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{ |
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$fail2ban = new self(); |
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if ($fail2ban->fail2ban_enable |
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&& ! $fail2ban->fail2banIsRunning()) { |
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$fail2ban->fail2banStart(); |
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} |
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} |
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/** |
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* Check fail2ban service status |
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* |
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* @return bool |
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*/ |
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private function fail2banIsRunning(): bool |
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{ |
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$fail2banPath = Util::which('fail2ban-client'); |
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$res_ping = Processes::mwExec("$fail2banPath ping"); |
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$res_stat = Processes::mwExec("$fail2banPath status"); |
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$result = false; |
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if ($res_ping === 0 && $res_stat === 0) { |
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$result = true; |
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} |
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return $result; |
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} |
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/** |
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* Start fail2ban service |
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*/ |
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public function fail2banStart(): void |
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{ |
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if (Util::isSystemctl()) { |
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$systemctlPath = Util::which('systemctl'); |
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Processes::mwExec("$systemctlPath restart fail2ban"); |
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return; |
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} |
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// T2SDE or Docker |
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Processes::killByName('fail2ban-server'); |
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$fail2banPath = Util::which('fail2ban-client'); |
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$cmd_start = "$fail2banPath -x start"; |
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$command = "($cmd_start;) > /dev/null 2>&1 &"; |
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Processes::mwExec($command); |
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} |
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/** |
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* Applies iptables settings and restart firewall |
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*/ |
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public static function reloadFail2ban(): void |
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{ |
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$fail2banPath = Util::which('fail2ban-client'); |
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if(file_exists(self::PID_FILE)){ |
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$pid = file_get_contents(self::PID_FILE); |
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}else{ |
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$pid = Processes::getPidOfProcess('fail2ban-server'); |
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} |
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$fail2ban = new self(); |
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if($fail2ban->fail2ban_enable && !empty($pid)){ |
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$fail2ban->generateConf(); |
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$fail2ban->generateModulesFilters(); |
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$fail2ban->generateModulesJailsLocal(); |
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// Reload the configuration without restarting Fail2Ban. |
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Processes::mwExecBg("$fail2banPath reload"); |
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} |
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} |
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/** |
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* Generating the fail2ban.conf config |
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* @return void |
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*/ |
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private function generateConf():void |
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{ |
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$log_dir = System::getLogDir() . '/fail2ban/'; |
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$lofFileName = "$log_dir/fail2ban.log"; |
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Util::mwMkdir($log_dir); |
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$conf = '['.'Definition'.']'.PHP_EOL. |
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'loglevel = INFO'.PHP_EOL. |
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'logtarget = FILE'.PHP_EOL. |
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"syslogsocket = $lofFileName".PHP_EOL. |
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'socket = /var/run/fail2ban/fail2ban.sock'.PHP_EOL. |
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'pidfile = /var/run/fail2ban/fail2ban.pid'.PHP_EOL. |
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'dbfile = /var/lib/fail2ban/fail2ban.sqlite3'.PHP_EOL. |
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'dbpurgeage = 1d'.PHP_EOL; |
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Util::fileWriteContent('/etc/fail2ban/fail2ban.conf', $conf); |
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if(!file_exists($lofFileName)){ |
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file_put_contents($lofFileName, ''); |
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} |
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} |
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/** |
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* Rotates the fail2ban log files. |
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*/ |
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public static function logRotate(): void |
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{ |
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$di = Di::getDefault(); |
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$fail2banPath = Util::which('fail2ban-client'); |
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if ($di === null) { |
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return; |
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} |
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$max_size = 10; |
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$log_dir = System::getLogDir() . '/fail2ban/'; |
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$text_config = $log_dir."fail2ban.log { |
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nocreate |
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nocopytruncate |
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delaycompress |
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nomissingok |
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start 0 |
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rotate 9 |
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size {$max_size}M |
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missingok |
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noolddir |
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postrotate |
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$fail2banPath set logtarget {$log_dir}fail2ban.log > /dev/null 2> /dev/null |
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endscript |
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create 640 www www |
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}"; |
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$varEtcDir = $di->getShared('config')->path('core.varEtcDir'); |
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$path_conf = $varEtcDir . '/fail2ban_logrotate.conf'; |
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file_put_contents($path_conf, $text_config); |
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$mb10 = $max_size * 1024 * 1024; |
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$options = ''; |
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if (Util::mFileSize("{$log_dir}fail2ban.log") > $mb10) { |
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$options = '-f'; |
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} |
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$logrotatePath = Util::which('logrotate'); |
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Processes::mwExecBg("$logrotatePath $options '$path_conf' > /dev/null 2> /dev/null"); |
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} |
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/** |
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* Checks whether BANS table exists in DB or not |
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* |
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* @param SQLite3 $db |
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* |
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* @return bool |
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*/ |
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public function tableBanExists(SQLite3 $db): bool |
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{ |
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$q_check = 'SELECT name FROM sqlite_master WHERE type = "table" AND name="bans"'; |
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$result_check = $db->query($q_check); |
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return (false !== $result_check && $result_check->fetchArray(SQLITE3_ASSOC) !== false); |
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} |
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/** |
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* Shutdown fail2ban service |
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*/ |
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public function fail2banStop(): void |
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{ |
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if (Util::isSystemctl()) { |
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$systemctlPath = Util::which('systemctl'); |
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Processes::mwExec("$systemctlPath stop fail2ban"); |
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} else { |
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$fail2banPath = Util::which('fail2ban-client'); |
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Processes::mwExec("$fail2banPath -x stop"); |
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} |
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} |
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/** |
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* Creates the necessary directories and files for Fail2Ban. |
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* |
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* @return string Returns the path to the Fail2Ban database file. |
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*/ |
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public function fail2banMakeDirs(): string |
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{ |
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$res_file = self::FAIL2BAN_DB_PATH; |
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$filename = basename($res_file); |
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$old_dir_db = '/cf/fail2ban'; |
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$dir_db = $this->di->getShared('config')->path('core.fail2banDbDir'); |
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if (empty($dir_db)) { |
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$dir_db = '/var/spool/fail2ban'; |
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} |
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Util::mwMkdir($dir_db); |
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// Create working directories. |
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$db_bd_dir = dirname($res_file); |
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Util::mwMkdir($db_bd_dir); |
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$create_link = false; |
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// Symbolic link to the database. |
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if (file_exists($res_file)){ |
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if (filetype($res_file) !== 'link') { |
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unlink($res_file); |
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$create_link = true; |
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} elseif (readlink($res_file) === "$old_dir_db/$filename") { |
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unlink($res_file); |
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$create_link = true; |
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if (file_exists("$old_dir_db/$filename")) { |
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// Move the file to the new location. |
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$mvPath = Util::which('mv'); |
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Processes::mwExec("$mvPath '$old_dir_db/$filename' '$dir_db/$filename'"); |
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} |
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} |
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}else{ |
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$sqlite3Path = Util::which('sqlite3'); |
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Processes::mwExec("$sqlite3Path $dir_db/$filename 'vacuum'"); |
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$create_link = true; |
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} |
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if ($create_link === true) { |
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Util::createUpdateSymlink("$dir_db/$filename", $res_file); |
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} |
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return $res_file; |
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} |
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/** |
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* Writes the Fail2Ban configuration to the jail.local file. |
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*/ |
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public function writeConfig(): void |
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{ |
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// Initialize properties |
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[$max_retry, $find_time, $ban_time, $user_whitelist] = $this->initProperty(); |
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$this->generateActions(); |
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$this->generateJails(); |
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// Define ports for different services |
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$httpPorts = [ |
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$this->allPbxSettings['WEBPort'], |
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$this->allPbxSettings['WEBHTTPSPort'] |
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]; |
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$sshPort = [ |
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$this->allPbxSettings[PbxSettingsConstants::SSH_PORT], |
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]; |
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$asteriskPorts = [ |
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$this->allPbxSettings['SIPPort'], |
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$this->allPbxSettings['TLS_PORT'], |
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$this->allPbxSettings['IAXPort'], |
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$this->allPbxSettings['RTPPortFrom'].':'.$this->allPbxSettings['RTPPortTo'], |
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$this->allPbxSettings['AJAMPortTLS'] |
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]; |
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$asteriskAMI = [ |
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$this->allPbxSettings['AMIPort'], |
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$this->allPbxSettings['AJAMPort'], |
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]; |
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// Define jails and their corresponding actions |
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310
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$jails = [ |
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311
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'dropbear' => 'miko-iptables-multiport-all[name=SSH, port="'.implode(',', $sshPort).'"]', |
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312
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'mikopbx-www' => 'miko-iptables-multiport-all[name=HTTP, port="'.implode(',', $httpPorts).'"]', |
|
313
|
|
|
]; |
|
314
|
|
|
|
|
315
|
|
|
$this->generateModulesJailsLocal($max_retry, $find_time, $ban_time); |
|
316
|
|
|
|
|
317
|
|
|
// Generate the Fail2Ban configuration |
|
318
|
|
|
$config = "[DEFAULT]\n" . |
|
319
|
|
|
"ignoreip = 127.0.0.1 $user_whitelist\n\n"; |
|
320
|
|
|
|
|
321
|
|
|
$syslog_file = SyslogConf::getSyslogFile(); |
|
322
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|
|
|
|
323
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|
|
$commonParams = "enabled = true".PHP_EOL . |
|
324
|
|
|
"maxretry = $max_retry\n" . |
|
325
|
|
|
"findtime = $find_time\n" . |
|
326
|
|
|
"bantime = $ban_time\n" . |
|
327
|
|
|
"logencoding = utf-8".PHP_EOL; |
|
328
|
|
|
|
|
329
|
|
|
foreach ($jails as $jail => $action) { |
|
330
|
|
|
$config .= "[$jail]\n" . |
|
331
|
|
|
$commonParams. |
|
332
|
|
|
"logpath = $syslog_file\n" . |
|
333
|
|
|
"action = $action\n\n"; |
|
334
|
|
|
} |
|
335
|
|
|
|
|
336
|
|
|
$log_dir = System::getLogDir() . '/asterisk/'; |
|
337
|
|
|
|
|
338
|
|
|
// Add specific jail configurations for Asterisk logs |
|
339
|
|
|
$config .= "[asterisk_security_log]\n" . |
|
340
|
|
|
"enabled = true\n" . |
|
341
|
|
|
$commonParams. |
|
342
|
|
|
'action = miko-iptables-multiport-all[name=ASTERISK, port="'.implode(',', $asteriskPorts).'"]'. PHP_EOL. |
|
343
|
|
|
"logpath = {$log_dir}security_log\n\n"; |
|
344
|
|
|
|
|
345
|
|
|
$config .= "[asterisk_error]\n" . |
|
346
|
|
|
$commonParams. |
|
347
|
|
|
"filter = asterisk-main\n" . |
|
348
|
|
|
'action = miko-iptables-multiport-all[name=ASTERISK_ERROR, port="'.implode(',', $asteriskPorts).'"]'. PHP_EOL. |
|
349
|
|
|
"logpath = {$log_dir}error\n\n"; |
|
350
|
|
|
|
|
351
|
|
|
$config .= "[asterisk_public]\n" . |
|
352
|
|
|
$commonParams. |
|
353
|
|
|
"filter = asterisk-main\n" . |
|
354
|
|
|
'action = miko-iptables-multiport-all[name=ASTERISK_PUBLIC, port="'.implode(',', $asteriskPorts).'"]'. PHP_EOL. |
|
355
|
|
|
"logpath = {$log_dir}messages\n\n"; |
|
356
|
|
|
|
|
357
|
|
|
$config .= "[asterisk_ami]\n" . |
|
358
|
|
|
$commonParams. |
|
359
|
|
|
"filter = asterisk-ami\n" . |
|
360
|
|
|
'action = miko-iptables-multiport-all[name=ASTERISK_AMI, port="'.implode(',', $asteriskAMI).'"]'. PHP_EOL. |
|
361
|
|
|
"logpath = {$log_dir}messages\n\n"; |
|
362
|
|
|
|
|
363
|
|
|
// Write the Fail2Ban configuration to the jail.local file |
|
364
|
|
|
Util::fileWriteContent('/etc/fail2ban/jail.local', $config); |
|
365
|
|
|
} |
|
366
|
|
|
|
|
367
|
|
|
/** |
|
368
|
|
|
* Generate the actions for iptables and write it to a configuration file. |
|
369
|
|
|
* |
|
370
|
|
|
* This function constructs the configuration string for iptables based on predefined commands. |
|
371
|
|
|
* These commands include start, stop, check, ban, and unban actions for the iptables firewall. |
|
372
|
|
|
* The configuration is written to a file named 'miko-iptables-multiport-all.conf'. |
|
373
|
|
|
* |
|
374
|
|
|
* @return void |
|
375
|
|
|
*/ |
|
376
|
|
|
private function generateActions(): void |
|
377
|
|
|
{ |
|
378
|
|
|
// Define the path to the configuration file |
|
379
|
|
|
$path = self::ACTION_PATH; |
|
380
|
|
|
|
|
381
|
|
|
// Construct the configuration string |
|
382
|
|
|
$conf = "[INCLUDES]".PHP_EOL. |
|
383
|
|
|
"before = iptables.conf".PHP_EOL. |
|
384
|
|
|
"[Definition]".PHP_EOL. |
|
385
|
|
|
"actionstart = <iptables> -N f2b-<name>".PHP_EOL. |
|
386
|
|
|
" <iptables> -A f2b-<name> -j <returntype>".PHP_EOL. |
|
387
|
|
|
" <iptables> -I <chain> -p tcp -m multiport --dports <port> -j f2b-<name>".PHP_EOL. |
|
388
|
|
|
" <iptables> -I <chain> -p udp -m multiport --dports <port> -j f2b-<name>".PHP_EOL. |
|
389
|
|
|
"actionstop = <iptables> -D <chain> -p tcp -m multiport --dports <port> -j f2b-<name>".PHP_EOL. |
|
390
|
|
|
" <iptables> -D <chain> -p udp -m multiport --dports <port> -j f2b-<name>".PHP_EOL. |
|
391
|
|
|
" <actionflush>".PHP_EOL. |
|
392
|
|
|
" <iptables> -X f2b-<name>".PHP_EOL. |
|
393
|
|
|
"actioncheck = <iptables> -n -L <chain> | grep -q 'f2b-<name>[ \\t]'".PHP_EOL. |
|
394
|
|
|
"actionban = <iptables> -I f2b-<name> 1 -s <ip> -p tcp -m multiport --dports <port> -j <blocktype>".PHP_EOL. |
|
395
|
|
|
" <iptables> -I f2b-<name> 1 -s <ip> -p udp -m multiport --dports <port> -j <blocktype>".PHP_EOL. |
|
396
|
|
|
"actionunban = <iptables> -D f2b-<name> -s <ip> -p tcp -m multiport --dports <port> -j <blocktype>".PHP_EOL. |
|
397
|
|
|
" <iptables> -D f2b-<name> -s <ip> -p udp -m multiport --dports <port> -j <blocktype>".PHP_EOL. |
|
398
|
|
|
"[Init]".PHP_EOL.PHP_EOL; |
|
399
|
|
|
|
|
400
|
|
|
// Write the configuration string to the configuration file |
|
401
|
|
|
file_put_contents("$path/miko-iptables-multiport-all.conf", $conf); |
|
402
|
|
|
} |
|
403
|
|
|
|
|
404
|
|
|
|
|
405
|
|
|
/** |
|
406
|
|
|
* Generate the jail configurations for various services. |
|
407
|
|
|
* |
|
408
|
|
|
* This function constructs the jail configuration strings for various services like MikroPBX web interface, |
|
409
|
|
|
* Dropbear SSH server, Asterisk AMI, and Asterisk security. These jail configurations are written to |
|
410
|
|
|
* their respective files. |
|
411
|
|
|
* |
|
412
|
|
|
* @return void |
|
413
|
|
|
*/ |
|
414
|
|
|
private function generateJails(): void |
|
415
|
|
|
{ |
|
416
|
|
|
// Define the path to the filter files |
|
417
|
|
|
$filterPath = self::FILTER_PATH; |
|
418
|
|
|
|
|
419
|
|
|
$commonConf = "[INCLUDES]" . PHP_EOL. |
|
420
|
|
|
"before = common.conf" . PHP_EOL . |
|
421
|
|
|
"[Definition]". PHP_EOL; |
|
422
|
|
|
// Construct the MikoPBX web interface configuration string |
|
423
|
|
|
$conf = $commonConf . |
|
424
|
|
|
"_daemon = [\S\W\s]+web_auth\n" . |
|
425
|
|
|
'failregex = \sFrom:\s<HOST>\sUserAgent:(\S|\s)*Wrong password$' . "\n" . |
|
426
|
|
|
' ^(\S|\s)*nginx:\s+\d+/\d+/\d+\s+(\S|\s)*status\s+403(\S|\s)*client:\s+<HOST>(\S|\s)*' . "\n" . |
|
427
|
|
|
' \[error\] \d+#\d+: \*\d+ user "(?:[^"]+|.*?)":? (?:password mismatch|was not found in "[^\"]*"), client: <HOST>, server: \S*, request: "\S+ \S+ HTTP/\d+\.\d+", host: "\S+"(?:, referrer: "\S+")?\s*$' . "\n" . |
|
428
|
|
|
"ignoreregex =\n"; |
|
429
|
|
|
|
|
430
|
|
|
// Write the configuration to the MikoPBX web interface file |
|
431
|
|
|
file_put_contents("$filterPath/mikopbx-www.conf", $conf); |
|
432
|
|
|
|
|
433
|
|
|
// Construct the Dropbear SSH server configuration string |
|
434
|
|
|
$conf = $commonConf . |
|
435
|
|
|
"_daemon = (authpriv.warn )?dropbear\n" . |
|
436
|
|
|
'prefregex = ^%(__prefix_line)s<F-CONTENT>(?:[Ll]ogin|[Bb]ad|[Ee]xit).+</F-CONTENT>$' . "\n" . |
|
437
|
|
|
'failregex = ^[Ll]ogin attempt for nonexistent user (\'.*\' )?from <HOST>:\d+$' . "\n" . |
|
438
|
|
|
' ^[Bb]ad (PAM )?password attempt for .+ from <HOST>(:\d+)?$' . "\n" . |
|
439
|
|
|
' ^[Ee]xit before auth \(user \'.+\', \d+ fails\): Max auth tries reached - user \'.+\' from <HOST>:\d+\s*$' . "\n" . |
|
440
|
|
|
"ignoreregex =\n"; |
|
441
|
|
|
|
|
442
|
|
|
// Write the configuration to the Dropbear SSH server file |
|
443
|
|
|
file_put_contents("$filterPath/dropbear.conf", $conf); |
|
444
|
|
|
|
|
445
|
|
|
// Construct the Asterisk AMI configuration string |
|
446
|
|
|
$conf = $commonConf. |
|
447
|
|
|
"_daemon = asterisk".PHP_EOL.PHP_EOL. |
|
448
|
|
|
"__pid_re = (?:\[\d+\])".PHP_EOL. |
|
449
|
|
|
"_c_ooooo = (\[C-\d+[a-z]*\]?)".PHP_EOL.PHP_EOL. |
|
450
|
|
|
"log_prefix= (?:NOTICE|SECURITY)%(__pid_re)s:?%(_c_ooooo)s?:? \S+:\d*( in \w+:)?".PHP_EOL.PHP_EOL. |
|
451
|
|
|
"failregex = ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Host <HOST> failed to authenticate as '[^']*'\$".PHP_EOL. |
|
452
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s(?:\sHost)? <HOST> failed to authenticate as '[^']*'\$".PHP_EOL.PHP_EOL. |
|
453
|
|
|
"ignoreregex =".PHP_EOL.PHP_EOL; |
|
454
|
|
|
// Write the configuration to the Asterisk AMI file |
|
455
|
|
|
file_put_contents("$filterPath/asterisk-ami.conf", $conf); |
|
456
|
|
|
|
|
457
|
|
|
|
|
458
|
|
|
// Construct the Asterisk security configuration string |
|
459
|
|
|
|
|
460
|
|
|
$conf = $commonConf. |
|
461
|
|
|
"_daemon = asterisk".PHP_EOL.PHP_EOL. |
|
462
|
|
|
"__pid_re = (?:\[\d+\])".PHP_EOL. |
|
463
|
|
|
"_c_ooooo = (\[C-\d+[a-z]*\]?)".PHP_EOL.PHP_EOL. |
|
464
|
|
|
"log_prefix= (?:NOTICE|SECURITY)%(__pid_re)s:?%(_c_ooooo)s?:? \S+:\d*( in \w+:)?".PHP_EOL.PHP_EOL. |
|
465
|
|
|
"failregex = ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Registration from '[^']*' failed for '<HOST>(:\d+)?' - (Wrong password|Username/auth name mismatch|No matching peer found|Not a local domain|Device does not match ACL|Peer is not supposed to register|ACL error \(permit/deny\)|Not a local domain)\$".PHP_EOL. |
|
466
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s No registration for peer '[^']*' \(from <HOST>\)\$".PHP_EOL. |
|
467
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Host <HOST> failed MD5 authentication for '[^']*' \([^)]+\)\$".PHP_EOL. |
|
468
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Failed to authenticate (user|device) [^@]+@<HOST>\S*\$".PHP_EOL. |
|
469
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s (?:handle_request_subscribe: )?Sending fake auth rejection for (device|user) \d*<sip:[^@]+@<HOST>>;tag=\w+\S*\$".PHP_EOL. |
|
470
|
|
|
' ^(%(__prefix_line)s|\[\]\s*WARNING%(__pid_re)s:?(?:\[C-[\da-f]*\])? )Ext\. s: "Rejecting unknown SIP connection from <HOST>"$'.PHP_EOL. |
|
471
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s <HOST> tried to authenticate with nonexistent user".PHP_EOL. |
|
472
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Request (?:'[^']*' )?from '(?:[^']*|.*?)' failed for '<HOST>(?::\d+)?'\s\(callid: [^\)]*\) - (?:No matching endpoint found|Not match Endpoint(?: Contact)? ACL|(?:Failed|Error) to authenticate)\s*\$".PHP_EOL. |
|
473
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s\s*(anonymous:\s)?Call\s(from)*\s*\((\w*:)?<HOST>:\d+\) to extension '\S*' rejected because extension not found in context 'public-direct-dial'\.\$".PHP_EOL. |
|
474
|
|
|
' ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s SecurityEvent="(?:FailedACL|InvalidAccountID|ChallengeResponseFailed|InvalidPassword)"(?:(?:,(?!RemoteAddress=)\w+="[^"]*")*|.*?),RemoteAddress="IPV[46]/[^/"]+/<HOST>/\d+"(?:,(?!RemoteAddress=)\w+="[^"]*")*$'.PHP_EOL. |
|
475
|
|
|
" ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s ^hacking attempt detected '<HOST>'\$".PHP_EOL.PHP_EOL. |
|
476
|
|
|
'ignoreregex = Service="AMI"'.PHP_EOL.PHP_EOL; |
|
477
|
|
|
|
|
478
|
|
|
// Write the configuration to the Asterisk security file |
|
479
|
|
|
file_put_contents("$filterPath/asterisk-main.conf", $conf); |
|
480
|
|
|
|
|
481
|
|
|
// Generate the module filters |
|
482
|
|
|
$this->generateModulesFilters(); |
|
483
|
|
|
} |
|
484
|
|
|
|
|
485
|
|
|
/** |
|
486
|
|
|
* Generate additional modules filter files |
|
487
|
|
|
*/ |
|
488
|
|
|
private function generateModulesFilters(): void |
|
489
|
|
|
{ |
|
490
|
|
|
$filterPath = self::FILTER_PATH; |
|
491
|
|
|
$rmPath = Util::which('rm'); |
|
492
|
|
|
Processes::mwExec("$rmPath -rf $filterPath/module_*.conf"); |
|
493
|
|
|
|
|
494
|
|
|
// Add additional modules routes |
|
495
|
|
|
$additionalModulesJails = PBXConfModulesProvider::hookModulesMethod(SystemConfigInterface::GENERATE_FAIL2BAN_JAILS); |
|
496
|
|
|
foreach ($additionalModulesJails as $moduleUniqueId=>$moduleJailText) { |
|
497
|
|
|
$fileName = Text::uncamelize($moduleUniqueId,'_').'.conf'; |
|
498
|
|
|
file_put_contents("$filterPath/$fileName", $moduleJailText); |
|
499
|
|
|
} |
|
500
|
|
|
} |
|
501
|
|
|
|
|
502
|
|
|
/** |
|
503
|
|
|
* Generate local jail configurations for the provided modules. |
|
504
|
|
|
* |
|
505
|
|
|
* This method creates configuration for each jail rule provided by the PBXConfModulesProvider. These |
|
506
|
|
|
* configurations are then written to their respective files in the jail directory. |
|
507
|
|
|
* |
|
508
|
|
|
* @param int $max_retry The maximum number of retries before a host is banned. Default is 0. |
|
509
|
|
|
* @param int $find_time The time frame in which a host makes unsuccessful login attempts before it is banned. Default is 0. |
|
510
|
|
|
* @param int $ban_time The amount of time a host is banned. Default is 0. |
|
511
|
|
|
* |
|
512
|
|
|
* @return void |
|
513
|
|
|
*/ |
|
514
|
|
|
private function generateModulesJailsLocal(int $max_retry = 0, int $find_time = 0, int $ban_time = 0): void |
|
515
|
|
|
{ |
|
516
|
|
|
// Initialize the properties if they are not provided. |
|
517
|
|
|
if($max_retry === 0){ |
|
518
|
|
|
[$max_retry, $find_time, $ban_time] = $this->initProperty(); |
|
519
|
|
|
} |
|
520
|
|
|
|
|
521
|
|
|
// Create the jail directory if it does not exist |
|
522
|
|
|
if(!is_dir(self::JAILS_DIR)){ |
|
523
|
|
|
Util::mwMkdir(self::JAILS_DIR); |
|
524
|
|
|
} |
|
525
|
|
|
|
|
526
|
|
|
// Define the prefix and extension for the jail configuration files |
|
527
|
|
|
$prefix = 'pbx_'; |
|
528
|
|
|
$extension = 'conf'; |
|
529
|
|
|
|
|
530
|
|
|
// Delete all existing jail configuration files |
|
531
|
|
|
Processes::mwExec("rm -rf ".self::JAILS_DIR."/$prefix*.$extension"); |
|
532
|
|
|
|
|
533
|
|
|
// Get the system log file |
|
534
|
|
|
$syslog_file = SyslogConf::getSyslogFile(); |
|
535
|
|
|
|
|
536
|
|
|
// Fetch the jails provided by the modules |
|
537
|
|
|
$additionalModulesJails = PBXConfModulesProvider::hookModulesMethod(SystemConfigInterface::GENERATE_FAIL2BAN_JAILS); |
|
538
|
|
|
|
|
539
|
|
|
// Iterate over each jail rule provided by the modules |
|
540
|
|
|
foreach ($additionalModulesJails as $moduleUniqueId=>$moduleJailText) { |
|
541
|
|
|
|
|
542
|
|
|
// Convert the module's unique id to a file-friendly format |
|
543
|
|
|
$fileName = Text::uncamelize($moduleUniqueId,'_'); |
|
544
|
|
|
|
|
545
|
|
|
// Construct the configuration string for the module |
|
546
|
|
|
$config = "[$fileName]\n" . |
|
547
|
|
|
"enabled = true\n" . |
|
548
|
|
|
"logpath = $syslog_file\n" . |
|
549
|
|
|
"maxretry = $max_retry\n" . |
|
550
|
|
|
"findtime = $find_time\n" . |
|
551
|
|
|
"bantime = $ban_time\n" . |
|
552
|
|
|
"logencoding = utf-8\n" . |
|
553
|
|
|
"action = iptables-allports[name=$moduleUniqueId, protocol=all]\n\n"; |
|
554
|
|
|
|
|
555
|
|
|
// Write the configuration to the jail's configuration file |
|
556
|
|
|
file_put_contents(self::JAILS_DIR."/".$prefix."$fileName.$extension", $config); |
|
557
|
|
|
} |
|
558
|
|
|
} |
|
559
|
|
|
|
|
560
|
|
|
/** |
|
561
|
|
|
* Initialize fail2ban rule properties. |
|
562
|
|
|
* |
|
563
|
|
|
* This method retrieves fail2ban rule properties from the database and constructs a whitelist |
|
564
|
|
|
* of IPs which should not be banned. If the rule is not found, it assigns default values. |
|
565
|
|
|
* |
|
566
|
|
|
* @return array Contains max_retry, find_time, ban_time and user_whitelist. |
|
567
|
|
|
*/ |
|
568
|
|
|
private function initProperty(): array{ |
|
569
|
|
|
|
|
570
|
|
|
// Initial empty whitelist. |
|
571
|
|
|
$user_whitelist = ''; |
|
572
|
|
|
|
|
573
|
|
|
// Find the first rule with id '1'. |
|
574
|
|
|
/** @var Fail2BanRules $res */ |
|
575
|
|
|
$res = Fail2BanRules::findFirst("id = '1'"); |
|
576
|
|
|
|
|
577
|
|
|
// If rule exists, extract its properties. |
|
578
|
|
|
if ($res !== null) { |
|
579
|
|
|
$max_retry = (int) $res->maxretry; |
|
580
|
|
|
$find_time = (int) $res->findtime; |
|
581
|
|
|
$ban_time = (int) $res->bantime; |
|
582
|
|
|
|
|
583
|
|
|
// Explode whitelist IPs into array. |
|
584
|
|
|
$whitelist = (string) $res->whitelist; |
|
585
|
|
|
$arr_whitelist = explode(' ', $whitelist); |
|
586
|
|
|
|
|
587
|
|
|
// Verify and add each IP to user whitelist. |
|
588
|
|
|
foreach ($arr_whitelist as $ip_string) { |
|
589
|
|
|
if (Verify::isIpAddress($ip_string)) { |
|
590
|
|
|
$user_whitelist .= "$ip_string "; |
|
591
|
|
|
} |
|
592
|
|
|
} |
|
593
|
|
|
|
|
594
|
|
|
// Fetch network filters where newer_block_ip = '1'. |
|
595
|
|
|
$net_filters = NetworkFilters::find("newer_block_ip = '1'"); |
|
596
|
|
|
|
|
597
|
|
|
// Add each filter's permit IP to user whitelist. |
|
598
|
|
|
foreach ($net_filters as $filter) { |
|
599
|
|
|
$user_whitelist .= "$filter->permit "; |
|
600
|
|
|
} |
|
601
|
|
|
|
|
602
|
|
|
// Trim any trailing spaces from the user whitelist. |
|
603
|
|
|
$user_whitelist = trim($user_whitelist); |
|
604
|
|
|
} else { |
|
605
|
|
|
// If rule doesn't exist, use default values. |
|
606
|
|
|
$max_retry = 10; |
|
607
|
|
|
$find_time = 1800; |
|
608
|
|
|
$ban_time = 43200; |
|
609
|
|
|
} |
|
610
|
|
|
|
|
611
|
|
|
// Return an array of the properties. |
|
612
|
|
|
return array($max_retry, $find_time, $ban_time, $user_whitelist); |
|
613
|
|
|
} |
|
614
|
|
|
|
|
615
|
|
|
} |
mikopbx /
Core
