installer_base.lib.php

<?php

/*
Copyright (c) 2007-2010, Till Brehm, projektfarm Gmbh
All rights reserved.

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

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name of ISPConfig nor the names of its contributors
      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.
*/

class installer_base {

	var $wb = array();
	var $language = 'en';
	var $db;
	public $conf;
	public $install_ispconfig_interface = true;
	public $is_update = false; // true if it is an update, falsi if it is a new install
	public $min_php = '5.3.3'; // minimal php-version for update / install
	protected $mailman_group = 'list';


	public function __construct() {
		global $conf; //TODO: maybe $conf  should be passed to constructor
		//$this->conf = $conf;
	}

	//: TODO  Implement the translation function and language files for the installer.
	public function lng($text) {
		return $text;
	}

	public function error($msg) {
		die('ERROR: '.$msg."\n");
	}

	public function warning($msg) {
		echo 'WARNING: '.$msg."\n";
	}

	public function simple_query($query, $answers, $default, $name = '') {
		global $autoinstall, $autoupdate;
		$finished = false;
		do {
			if($name != '' && $autoinstall[$name] != '') {
				if($autoinstall[$name] == 'default') {
					$input = $default;
				} else {
					$input = $autoinstall[$name];
				}
			} elseif($name != '' && $autoupdate[$name] != '') {
				if($autoupdate[$name] == 'default') {
					$input = $default;
				} else {
					$input = $autoupdate[$name];
				}
			} else {
				$answers_str = implode(',', $answers);
				swrite($this->lng($query).' ('.$answers_str.') ['.$default.']: ');
				$input = sread();
			}

			//* Stop the installation
			if($input == 'quit') {
				swriteln($this->lng("Installation terminated by user.\n"));
				die();
			}

			//* Select the default
			if($input == '') {
				$answer = $default;
				$finished = true;
			}

			//* Set answer id valid
			if(in_array($input, $answers)) {
				$answer = $input;
				$finished = true;
			}

		} while ($finished == false);
		swriteln();
		return $answer;
	}

	public function free_query($query, $default, $name = '') {
		global $autoinstall, $autoupdate;
		if($name != '' && $autoinstall[$name] != '') {
			if($autoinstall[$name] == 'default') {
				$input = $default;
			} else {
				$input = $autoinstall[$name];
			}
		} elseif($name != '' && $autoupdate[$name] != '') {
			if($autoupdate[$name] == 'default') {
				$input = $default;
			} else {
				$input = $autoupdate[$name];
			}
		} else {
			swrite($this->lng($query).' ['.$default.']: ');
			$input = sread();
		}

		//* Stop the installation
		if($input == 'quit') {
			swriteln($this->lng("Installation terminated by user.\n"));
			die();
		}

		$answer =  ($input == '') ? $default : $input;
		swriteln();
		return $answer;
	}

	/*
	// TODO: this function is not used atmo I think - pedro
	function request_language(){

		swriteln(lng('Enter your language'));
		swriteln(lng('de, en'));

	}
	*/

	//** Detect PHP-Version
	public function get_php_version() {
		if(version_compare(PHP_VERSION, $this->min_php, '<')) return false;
		else return true;
	}

	//** Detect installed applications
	public function find_installed_apps() {
		global $conf;

		if(is_installed('mysql') || is_installed('mysqld')) $conf['mysql']['installed'] = true;
		if(is_installed('postfix')) $conf['postfix']['installed'] = true;
		if(is_installed('postgrey')) $conf['postgrey']['installed'] = true;
		if(is_installed('mailman') || is_installed('mmsitepass')) $conf['mailman']['installed'] = true;
		if(is_installed('apache') || is_installed('apache2') || is_installed('httpd') || is_installed('httpd2')) $conf['apache']['installed'] = true;
		if(is_installed('getmail')) $conf['getmail']['installed'] = true;
		if(is_installed('courierlogger')) $conf['courier']['installed'] = true;
		if(is_installed('dovecot')) $conf['dovecot']['installed'] = true;
		if(is_installed('saslauthd')) $conf['saslauthd']['installed'] = true;
		if(is_installed('amavisd-new') || is_installed('amavisd')) $conf['amavis']['installed'] = true;
		if(is_installed('rspamd')) $conf['rspamd']['installed'] = true;
		if(is_installed('clamdscan')) $conf['clamav']['installed'] = true;
		if(is_installed('pure-ftpd') || is_installed('pure-ftpd-wrapper')) $conf['pureftpd']['installed'] = true;
		if(is_installed('mydns') || is_installed('mydns-ng')) $conf['mydns']['installed'] = true;
		if(is_installed('jk_chrootsh')) $conf['jailkit']['installed'] = true;
		if(is_installed('pdns_server') || is_installed('pdns_control')) $conf['powerdns']['installed'] = true;
		if(is_installed('named') || is_installed('bind') || is_installed('bind9')) $conf['bind']['installed'] = true;
		if(is_installed('squid')) $conf['squid']['installed'] = true;
		if(is_installed('nginx')) $conf['nginx']['installed'] = true;
		if(is_installed('iptables') && is_installed('ufw')) {
			$conf['ufw']['installed'] = true;
		} elseif(is_installed('iptables')) {
			$conf['firewall']['installed'] = true;
		}
		if(is_installed('fail2ban-server')) $conf['fail2ban']['installed'] = true;
		if(is_installed('vzctl')) $conf['openvz']['installed'] = true;
		if(is_installed('metronome') && is_installed('metronomectl')) $conf['xmpp']['installed'] = true;
		if(is_installed('spamassassin')) $conf['spamassassin']['installed'] = true;
		// if(is_installed('vlogger')) $conf['vlogger']['installed'] = true;
		// ISPConfig ships with vlogger, so it is always installed.
		$conf['vlogger']['installed'] = true;
		if(is_installed('cron') || is_installed('anacron')) $conf['cron']['installed'] = true;

		if (($conf['apache']['installed'] && is_file($conf['apache']["vhost_conf_enabled_dir"]."/000-ispconfig.vhost")) || ($conf['nginx']['installed'] && is_file($conf['nginx']["vhost_conf_enabled_dir"]."/000-ispconfig.vhost"))) $this->ispconfig_interface_installed = true;
	}

    public function force_configure_app($service, $enable_force=true) {
		$force = false;
		if(AUTOINSTALL == true) return false;
		if($enable_force == true) {
			swriteln("[WARN] autodetect for $service failed");
		} else {
			swriteln("[INFO] service $service not detected");
		}
		if($enable_force) {
	        if(strtolower($this->simple_query("Force configure $service", array('y', 'n'), 'n') ) == 'y') {
	            $force = true;
			} else swriteln("Skipping $service\n");
		}
		return $force;
    }

	public function reconfigure_app($service, $reconfigure_services_answer) {
		$reconfigure = false;
		if ($reconfigure_services_answer != 'selected') {
			$reconfigure = true;
		} else {
			if(strtolower($this->simple_query("Reconfigure $service", array('y', 'n'), 'y') ) == 'y') {
				$reconfigure = true;
			} else {
				swriteln("Skip reconfigure $service\n");
			}
		}
		return $reconfigure;
	}

	/** Create the database for ISPConfig */


	public function configure_database() {
		global $conf;

		//* check sql-mode
		/*$check_sql_mode = $this->db->queryOneRecord("SELECT @@sql_mode");

		if ($check_sql_mode['@@sql_mode'] != '' && $check_sql_mode['@@sql_mode'] != 'NO_ENGINE_SUBSTITUTION') {
			echo "Wrong SQL-mode. You should use NO_ENGINE_SUBSTITUTION. Add\n\n";
			echo "    sql-mode=\"NO_ENGINE_SUBSTITUTION\"\n\n";
			echo"to the mysqld-section in your mysql-config on this server and restart mysqld afterwards\n";
			die();
		}*/

		$unwanted_sql_plugins = array('validate_password');		
		$sql_plugins = $this->db->queryAllRecords("SELECT plugin_name FROM information_schema.plugins WHERE plugin_status='ACTIVE' AND plugin_name IN ?", $unwanted_sql_plugins);
		if(is_array($sql_plugins) && !empty($sql_plugins)) {
			foreach ($sql_plugins as $plugin) echo "Login in to MySQL and disable $plugin[plugin_name] with:\n\n    UNINSTALL PLUGIN $plugin[plugin_name];";
			die();
		}

		//** Create the database
		if(!$this->db->query('CREATE DATABASE IF NOT EXISTS ?? DEFAULT CHARACTER SET ?', $conf['mysql']['database'], $conf['mysql']['charset'])) {
			$this->error('Unable to create MySQL database: '.$conf['mysql']['database'].'.');
		}

		//* Set the database name in the DB library
		$this->db->setDBName($conf['mysql']['database']);

		//* Load the database dump into the database, if database contains no tables
		$db_tables = $this->db->getTables();
		if(count($db_tables) > 0) {
			$this->error('Stopped: Database already contains some tables.');
		} else {
			if($conf['mysql']['admin_password'] == '') {
				caselog("mysql --default-character-set=".escapeshellarg($conf['mysql']['charset'])." -h ".escapeshellarg($conf['mysql']['host'])." -u ".escapeshellarg($conf['mysql']['admin_user'])." -P ".escapeshellarg($conf['mysql']['port'])." ".escapeshellarg($conf['mysql']['database'])." < '".ISPC_INSTALL_ROOT."/install/sql/ispconfig3.sql' &> /dev/null",
					__FILE__, __LINE__, 'read in ispconfig3.sql', 'could not read in ispconfig3.sql');
			} else {
				caselog("mysql --default-character-set=".escapeshellarg($conf['mysql']['charset'])." -h ".escapeshellarg($conf['mysql']['host'])." -u ".escapeshellarg($conf['mysql']['admin_user'])." -p".escapeshellarg($conf['mysql']['admin_password'])." -P ".escapeshellarg($conf['mysql']['port'])." ".escapeshellarg($conf['mysql']['database'])." < '".ISPC_INSTALL_ROOT."/install/sql/ispconfig3.sql' &> /dev/null",
					__FILE__, __LINE__, 'read in ispconfig3.sql', 'could not read in ispconfig3.sql');
			}
			$db_tables = $this->db->getTables();
			if(count($db_tables) == 0) {
				$this->error('Unable to load SQL-Dump into database table.');
			}

			//* Load system.ini into the sys_ini table
			$system_ini = rf('tpl/system.ini.master');
			$this->db->query("UPDATE sys_ini SET config = ? WHERE sysini_id = 1", $system_ini);

		}
	}

	//** Create the server record in the database
	public function add_database_server_record() {

		global $conf;

		if($conf['mysql']['host'] == 'localhost') {
			$from_host = 'localhost';
		} else {
			$from_host = $conf['hostname'];
		}

		// Delete ISPConfig user in the local database, in case that it exists
		$this->db->query("DROP USER ?@?", $conf['mysql']['ispconfig_user'], $from_host);
		$this->db->query("DROP DATABASE IF EXISTS ?", $conf['mysql']['database']);

		//* Create the ISPConfig database user and grant permissions in the local database
		$query = 'CREATE USER ?@? IDENTIFIED BY ?';
		if(!$this->db->query($query, $conf['mysql']['ispconfig_user'], $from_host, $conf['mysql']['ispconfig_password'])) {
			$this->error('Unable to create database user: '.$conf['mysql']['ispconfig_user'].' Error: '.$this->db->errorMessage);
		}
		$query = 'GRANT SELECT, INSERT, UPDATE, DELETE ON ?? TO ?@?';
		if(!$this->db->query($query, $conf['mysql']['database'] . ".*", $conf['mysql']['ispconfig_user'], $from_host)) {
			$this->error('Unable to grant databse permissions to user: '.$conf['mysql']['ispconfig_user'].' Error: '.$this->db->errorMessage);
		}

		//* Set the database name in the DB library
		$this->db->setDBName($conf['mysql']['database']);

		$tpl_ini_array = ini_to_array(rf('tpl/server.ini.master'));

		//* Update further distribution specific parameters for server config here
		//* HINT: Every line added here has to be added in update.lib.php too!!
		$tpl_ini_array['web']['vhost_conf_dir'] = $conf['apache']['vhost_conf_dir'];
		$tpl_ini_array['web']['vhost_conf_enabled_dir'] = $conf['apache']['vhost_conf_enabled_dir'];
		$tpl_ini_array['jailkit']['jailkit_chroot_app_programs'] = $conf['jailkit']['jailkit_chroot_app_programs'];
		$tpl_ini_array['fastcgi']['fastcgi_phpini_path'] = $conf['fastcgi']['fastcgi_phpini_path'];
		$tpl_ini_array['fastcgi']['fastcgi_starter_path'] = $conf['fastcgi']['fastcgi_starter_path'];
		$tpl_ini_array['fastcgi']['fastcgi_bin'] = $conf['fastcgi']['fastcgi_bin'];
		$tpl_ini_array['server']['hostname'] = $conf['hostname'];
		$tpl_ini_array['server']['ip_address'] = @gethostbyname($conf['hostname']);
		$tpl_ini_array['server']['firewall'] = ($conf['ufw']['installed'] == true)?'ufw':'bastille';
		$tpl_ini_array['web']['website_basedir'] = $conf['web']['website_basedir'];
		$tpl_ini_array['web']['website_path'] = $conf['web']['website_path'];
		$tpl_ini_array['web']['website_symlinks'] = $conf['web']['website_symlinks'];
		$tpl_ini_array['cron']['crontab_dir'] = $conf['cron']['crontab_dir'];
		$tpl_ini_array['web']['security_level'] = 20;
		$tpl_ini_array['web']['user'] = $conf['apache']['user'];
		$tpl_ini_array['web']['group'] = $conf['apache']['group'];
		$tpl_ini_array['web']['php_ini_path_apache'] = $conf['apache']['php_ini_path_apache'];
		$tpl_ini_array['web']['php_ini_path_cgi'] = $conf['apache']['php_ini_path_cgi'];
		$tpl_ini_array['mail']['pop3_imap_daemon'] = ($conf['dovecot']['installed'] == true)?'dovecot':'courier';
		$tpl_ini_array['mail']['mail_filter_syntax'] = ($conf['dovecot']['installed'] == true)?'sieve':'maildrop';
		$tpl_ini_array['mail']['content_filter'] = @($conf['rspamd']['installed']) ? 'rspamd' : 'amavisd';
		$tpl_ini_array['mail']['rspamd_available'] = @($conf['rspamd']['installed']) ? 'y' : 'n';
		$tpl_ini_array['dns']['bind_user'] = $conf['bind']['bind_user'];
		$tpl_ini_array['dns']['bind_group'] = $conf['bind']['bind_group'];
		$tpl_ini_array['dns']['bind_zonefiles_dir'] = $conf['bind']['bind_zonefiles_dir'];
		$tpl_ini_array['dns']['named_conf_path'] = $conf['bind']['named_conf_path'];
		$tpl_ini_array['dns']['named_conf_local_path'] = $conf['bind']['named_conf_local_path'];

		$tpl_ini_array['web']['nginx_vhost_conf_dir'] = $conf['nginx']['vhost_conf_dir'];
		$tpl_ini_array['web']['nginx_vhost_conf_enabled_dir'] = $conf['nginx']['vhost_conf_enabled_dir'];
		$tpl_ini_array['web']['nginx_user'] = $conf['nginx']['user'];
		$tpl_ini_array['web']['nginx_group'] = $conf['nginx']['group'];
		$tpl_ini_array['web']['nginx_cgi_socket'] = $conf['nginx']['cgi_socket'];
		$tpl_ini_array['web']['php_fpm_init_script'] = $conf['nginx']['php_fpm_init_script'];
		$tpl_ini_array['web']['php_fpm_ini_path'] = $conf['nginx']['php_fpm_ini_path'];
		$tpl_ini_array['web']['php_fpm_pool_dir'] = $conf['nginx']['php_fpm_pool_dir'];
		$tpl_ini_array['web']['php_fpm_start_port'] = $conf['nginx']['php_fpm_start_port'];
		$tpl_ini_array['web']['php_fpm_socket_dir'] = $conf['nginx']['php_fpm_socket_dir'];

		if ($conf['nginx']['installed'] == true) {
			$tpl_ini_array['web']['server_type'] = 'nginx';
			$tpl_ini_array['global']['webserver'] = 'nginx';
		}

		if (array_key_exists('awstats', $conf)) {
			foreach ($conf['awstats'] as $aw_sett => $aw_value) {
				$tpl_ini_array['web']['awstats_'.$aw_sett] = $aw_value;
			}
		}

		$server_ini_content = array_to_ini($tpl_ini_array);
		
		$mail_server_enabled = ($conf['services']['mail'])?1:0;
		$web_server_enabled = ($conf['services']['web'])?1:0;
		$dns_server_enabled = ($conf['services']['dns'])?1:0;
		$file_server_enabled = ($conf['services']['file'])?1:0;
		$db_server_enabled = ($conf['services']['db'])?1:0;
		$vserver_server_enabled = ($conf['openvz']['installed'])?1:0;
		$proxy_server_enabled = (isset($conf['services']['proxy']) && $conf['services']['proxy'])?1:0;
		$firewall_server_enabled = (isset($conf['services']['firewall']) && $conf['services']['firewall'])?1:0;

		//** Get the database version number based on the patchfiles
		$found = true;
		$current_db_version = 1;
		while($found == true) {
			$next_db_version = intval($current_db_version + 1);
			$patch_filename = realpath(dirname(__FILE__).'/../').'/sql/incremental/upd_'.str_pad($next_db_version, 4, '0', STR_PAD_LEFT).'.sql';
			if(is_file($patch_filename)) {
				$current_db_version = $next_db_version;
			} else {
				$found = false;
			}
		}
		$current_db_version = intval($current_db_version);


		if($conf['mysql']['master_slave_setup'] == 'y') {

			//* Insert the server record in master DB
			$sql = "INSERT INTO `server` (`sys_userid`, `sys_groupid`, `sys_perm_user`, `sys_perm_group`, `sys_perm_other`, `server_name`, `mail_server`, `web_server`, `dns_server`, `file_server`, `db_server`, `vserver_server`, `config`, `updated`, `active`, `dbversion`,`firewall_server`,`proxy_server`) VALUES (1, 1, 'riud', 'riud', 'r', ?, ?, ?, ?, ?, ?, ?, ?, 0, 1, ?, ?, ?);";
			$this->dbmaster->query($sql, $conf['hostname'], $mail_server_enabled, $web_server_enabled, $dns_server_enabled, $file_server_enabled, $db_server_enabled, $vserver_server_enabled, $server_ini_content, $current_db_version, $proxy_server_enabled, $firewall_server_enabled);
			$conf['server_id'] = $this->dbmaster->insertID();
			$conf['server_id'] = $conf['server_id'];

			//* Insert the same record in the local DB
			$sql = "INSERT INTO `server` (`server_id`, `sys_userid`, `sys_groupid`, `sys_perm_user`, `sys_perm_group`, `sys_perm_other`, `server_name`, `mail_server`, `web_server`, `dns_server`, `file_server`, `db_server`, `vserver_server`, `config`, `updated`, `active`, `dbversion`,`firewall_server`,`proxy_server`) VALUES (?,1, 1, 'riud', 'riud', 'r', ?, ?, ?, ?, ?, ?, ?, ?, 0, 1, ?, ?, ?);";
			$this->db->query($sql, $conf['server_id'], $conf['hostname'], $mail_server_enabled, $web_server_enabled, $dns_server_enabled, $file_server_enabled, $db_server_enabled, $vserver_server_enabled, $server_ini_content, $current_db_version, $proxy_server_enabled, $firewall_server_enabled);

			//* username for the ispconfig user
			$conf['mysql']['master_ispconfig_user'] = 'ispcsrv'.$conf['server_id'];

			$this->grant_master_database_rights();

		} else {
			//* Insert the server, if its not a mster / slave setup
			$sql = "INSERT INTO `server` (`sys_userid`, `sys_groupid`, `sys_perm_user`, `sys_perm_group`, `sys_perm_other`, `server_name`, `mail_server`, `web_server`, `dns_server`, `file_server`, `db_server`, `vserver_server`, `config`, `updated`, `active`, `dbversion`,`firewall_server`,`proxy_server`) VALUES (1, 1, 'riud', 'riud', 'r', ?, ?, ?, ?, ?, ?, ?, ?, 0, 1, ?, ?, ?);";
			$this->db->query($sql, $conf['hostname'], $mail_server_enabled, $web_server_enabled, $dns_server_enabled, $file_server_enabled, $db_server_enabled, $vserver_server_enabled, $server_ini_content, $current_db_version, $proxy_server_enabled, $firewall_server_enabled);
			$conf['server_id'] = $this->db->insertID();
			$conf['server_id'] = $conf['server_id'];
		}


	}

	public function get_host_ips() {
		$out = array();
		exec('hostname --all-ip-addresses', $ret, $val);
		if($val == 0) {
			if(is_array($ret) && !empty($ret)){
				$temp = (explode(' ', $ret[0]));
				foreach($temp as $ip) {
					$out[] = $ip;
				}
			}
		}

		return $out;
	}

	public function detect_ips(){
		global $conf;
			
		$output = $this->get_host_ips();

		if(is_array($output) && !empty($output)){
			foreach($output as $line){
				$ip_type = '';
				if (filter_var($line, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
					$ip_type = 'IPv4';
				}
				if (filter_var($line, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
					$ip_type = 'IPv6';
				}
				if($ip_type == '') continue;
				if($this->db->dbHost != $this->dbmaster->dbHost){
					$this->dbmaster->query('INSERT INTO server_ip (
						sys_userid, sys_groupid, sys_perm_user, sys_perm_group,
						sys_perm_other, server_id, client_id, ip_type, ip_address,
						virtualhost, virtualhost_port
					) VALUES (
						1,
						1,
						"riud",
						"riud",
						"",
						?,
						0,
						?,
						?,
						"y",
						"80,443"
					)', $conf['server_id'], $ip_type, $line);
					$server_ip_id = $this->dbmaster->insertID();
					$this->db->query('INSERT INTO server_ip (
						server_php_id, sys_userid, sys_groupid, sys_perm_user, sys_perm_group,
						sys_perm_other, server_id, client_id, ip_type, ip_address,
						virtualhost, virtualhost_port
					) VALUES (
						?,
						1,
						1,
						"riud",
						"riud",
						"",
						?,
						0,
						?,
						?,
						"y",
						"80,443"
					)', $server_ip_id, $conf['server_id'], $ip_type, $line);
				} else {
					$this->db->query('INSERT INTO server_ip (
						sys_userid, sys_groupid, sys_perm_user, sys_perm_group,
						sys_perm_other, server_id, client_id, ip_type, ip_address,
						virtualhost, virtualhost_port
					) VALUES (
						1,
						1,
						"riud",
						"riud",
						"",
						?,
						0,
						?,
						?,
						"y",
						"80,443"
					)', $conf['server_id'], $ip_type, $line);
				}
			}
		}
	}

	public function grant_master_database_rights($verbose = false) {
		global $conf;

		/*
		 * The following code is a little bit tricky:
		 * * If we HAVE a master-slave - Setup then the client has to grant the rights for himself
		 *   at the master.
		 * * If we DO NOT have a master-slave - Setup then we have two possibilities
		 *   1) it is a single server
		 *   2) it is the MASTER of n clients
		*/
		$hosts = array();

		if($conf['mysql']['master_slave_setup'] == 'y') {
			/*
			 * it is a master-slave - Setup so the slave has to grant its rights in the master
			 * database
			 */

			//* insert the ispconfig user in the remote server
			$from_host = $conf['hostname'];
			$hosts[$from_host]['user'] = $conf['mysql']['master_ispconfig_user'];
			$hosts[$from_host]['db'] = $conf['mysql']['master_database'];
			$hosts[$from_host]['pwd'] = $conf['mysql']['master_ispconfig_password'];

			$host_ips = $this->get_host_ips();
			if(is_array($host_ips) && !empty($host_ips)) {
				foreach($host_ips as $ip) {
					$hosts[$ip]['user'] = $conf['mysql']['master_ispconfig_user'];
					$hosts[$ip]['db'] = $conf['mysql']['master_database'];
					$hosts[$ip]['pwd'] = $conf['mysql']['master_ispconfig_password'];
				}
			} else {
				$from_ip = gethostbyname($conf['hostname']);
				$hosts[$from_ip]['user'] = $conf['mysql']['master_ispconfig_user'];
				$hosts[$from_ip]['db'] = $conf['mysql']['master_database'];
				$hosts[$from_ip]['pwd'] = $conf['mysql']['master_ispconfig_password'];
			}
		} else{
			/*
			 * it is NOT a master-slave - Setup so we have to find out all clients and their
			 * host
			 */
			$query = "SELECT Host, User FROM mysql.user WHERE User like 'ispcsrv%' ORDER BY User, Host";
			$data = $this->dbmaster->queryAllRecords($query);
			if($data === false) {
				$this->error('Unable to get the user rights: '.$value['db'].' Error: '.$this->dbmaster->errorMessage);
			}
			foreach ($data as $item){
				$hosts[$item['Host']]['user'] = $item['User'];
				$hosts[$item['Host']]['db'] = $conf['mysql']['master_database'];
				$hosts[$item['Host']]['pwd'] = ''; // the user already exists, so we need no pwd!
			}
		}

		if(count($hosts) > 0) {
			foreach($hosts as $host => $value) {
				/*
			 * If a pwd exists, this means, we have to add the new user (and his pwd).
			 * if not, the user already exists and we do not need the pwd
			 */
				if ($value['pwd'] != ''){
					$query = "CREATE USER ?@? IDENTIFIED BY ?";
					if ($verbose){
						echo "\n\n" . $query ."\n";
					}
					$this->dbmaster->query($query, $value['user'], $host, $value['pwd']); // ignore the error
				}

				/*
			 *  Try to delete all rights of the user in case that it exists.
			 *  In Case that it will not exist, do nothing (ignore the error!)
			 */
				$query = "REVOKE ALL PRIVILEGES, GRANT OPTION FROM ?@?";
				if ($verbose){
					echo "\n\n" . $query ."\n";
				}
				$this->dbmaster->query($query, $value['user'], $host); // ignore the error

				//* Create the ISPConfig database user in the remote database
				$query = "GRANT SELECT ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.server', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, INSERT ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.sys_log', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, UPDATE(`status`, `error`) ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.sys_datalog', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, UPDATE(`status`) ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.software_update_inst', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, UPDATE(`updated`) ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.server', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, UPDATE (`ssl`, `ssl_letsencrypt`, `ssl_request`, `ssl_cert`, `ssl_action`, `ssl_key`) ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.web_domain', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.sys_group', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, UPDATE (`action_state`, `response`) ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.sys_remoteaction', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, INSERT , DELETE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.monitor_data', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, INSERT, UPDATE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.mail_traffic', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, INSERT, UPDATE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.web_traffic', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, UPDATE, DELETE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.aps_instances', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}
				
				$query = "GRANT SELECT, DELETE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.aps_instances_settings', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, INSERT, DELETE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.web_backup', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

				$query = "GRANT SELECT, INSERT, DELETE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.mail_backup', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}
				
				$query = "GRANT SELECT, UPDATE(`dnssec_initialized`, `dnssec_info`, `dnssec_last_signed`) ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.dns_soa', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}
				
				$query = "GRANT SELECT, INSERT, UPDATE ON ?? TO ?@?";
				if ($verbose){
					echo $query ."\n";
				}
				if(!$this->dbmaster->query($query, $value['db'] . '.ftp_traffic', $value['user'], $host)) {
					$this->warning('Unable to set rights of user in master database: '.$value['db']."\n Query: ".$query."\n Error: ".$this->dbmaster->errorMessage);
				}

			}

		}

	}

	//** writes postfix configuration files
	public function process_postfix_config($configfile) {
		global $conf;

		$config_dir = $conf['postfix']['config_dir'].'/';
		$full_file_name = $config_dir.$configfile;
		//* Backup exiting file
		if(is_file($full_file_name)) {
			copy($full_file_name, $config_dir.$configfile.'~');
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		$content = str_replace('{server_id}', $conf['server_id'], $content);
		wf($full_file_name, $content);
	}

	public function configure_jailkit() {
		global $conf;

		$cf = $conf['jailkit'];
		$config_dir = $cf['config_dir'];
		$jk_init = $cf['jk_init'];
		$jk_chrootsh = $cf['jk_chrootsh'];

		if (is_dir($config_dir)) {
			if(is_file($config_dir.'/'.$jk_init)) copy($config_dir.'/'.$jk_init, $config_dir.'/'.$jk_init.'~');
			if(is_file($config_dir.'/'.$jk_chrootsh.'.master')) copy($config_dir.'/'.$jk_chrootsh.'.master', $config_dir.'/'.$jk_chrootsh.'~');

			if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$jk_init.'.master')) {
				copy($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$jk_init.'.master', $config_dir.'/'.$jk_init);
			} else {
				copy('tpl/'.$jk_init.'.master', $config_dir.'/'.$jk_init);
			}
			if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$jk_chrootsh.'.master')) {
				copy($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$jk_chrootsh.'.master', $config_dir.'/'.$jk_chrootsh);
			} else {
				copy('tpl/'.$jk_chrootsh.'.master', $config_dir.'/'.$jk_chrootsh);
			}
		}

		//* help jailkit fo find its ini files
		if(!is_link('/usr/jk_socketd.ini')) exec('ln -s /etc/jailkit/jk_socketd.ini /usr/jk_socketd.ini');
		if(!is_link('/usr/jk_init.ini')) exec('ln -s /etc/jailkit/jk_init.ini /usr/jk_init.ini');

	}

	public function configure_mailman($status = 'insert') {
		global $conf;

		$config_dir = $conf['mailman']['config_dir'].'/';
		$full_file_name = $config_dir.'mm_cfg.py';
		//* Backup exiting file
		if(is_file($full_file_name)) {
			copy($full_file_name, $config_dir.'mm_cfg.py~');
		}

		// load files
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/mm_cfg.py.master', 'tpl/mm_cfg.py.master');
		$old_file = rf($full_file_name);

		$old_options = array();
		$lines = explode("\n", $old_file);
		foreach ($lines as $line)
		{
			if (trim($line) != '' && substr($line, 0, 1) != '#')
			{
				@list($key, $value) = @explode("=", $line);
				if (isset($value) && $value !== '')
				{
					$key = rtrim($key);
					$old_options[$key] = trim($value);
				}
			}
		}

		$virtual_domains = '';
		if($status == 'update')
		{
			// create virtual_domains list
			$domainAll = $this->db->queryAllRecords("SELECT domain FROM mail_mailinglist GROUP BY domain");

			if(is_array($domainAll)) {
				foreach($domainAll as $domain)
				{
					if ($domainAll[0]['domain'] == $domain['domain'])
						$virtual_domains .= "'".$domain['domain']."'";
					else
						$virtual_domains .= ", '".$domain['domain']."'";
				}
			}
		}
		else
			$virtual_domains = "' '";

		$content = str_replace('{hostname}', $conf['hostname'], $content);
		if(!isset($old_options['DEFAULT_SERVER_LANGUAGE']) || $old_options['DEFAULT_SERVER_LANGUAGE'] == '') $old_options['DEFAULT_SERVER_LANGUAGE'] = "'en'";
		$content = str_replace('{default_language}', $old_options['DEFAULT_SERVER_LANGUAGE'], $content);
		$content = str_replace('{virtual_domains}', $virtual_domains, $content);

		wf($full_file_name, $content);

		//* Write virtual_to_transport.sh script
		$config_dir = $conf['mailman']['config_dir'].'/';
		$full_file_name = $config_dir.'virtual_to_transport.sh';

		//* Backup exiting virtual_to_transport.sh script
		if(is_file($full_file_name)) {
			copy($full_file_name, $config_dir.'virtual_to_transport.sh~');
		}

		if(is_dir('/etc/mailman')) {
			if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/mailman-virtual_to_transport.sh')) {
				copy($conf['ispconfig_install_dir'].'/server/conf-custom/install/mailman-virtual_to_transport.sh', $full_file_name);
			} else {
				copy('tpl/mailman-virtual_to_transport.sh', $full_file_name);
			}
			chgrp($full_file_name, $this->mailman_group);
			chmod($full_file_name, 0755);
		}

		//* Create aliasaes
		if($status == 'install') exec('/usr/lib/mailman/bin/genaliases 2>/dev/null');

		if(!is_file('/var/lib/mailman/data/transport-mailman')) touch('/var/lib/mailman/data/transport-mailman');
		exec('/usr/sbin/postmap /var/lib/mailman/data/transport-mailman');
	}

	public function get_postfix_service($service, $type) {
		global $conf;

		exec("postconf -M 2> /dev/null", $out, $ret);

		if ($ret === 0) { //* with postfix >= 2.9 we can detect configured services with postconf
			unset($out);
			exec ("postconf -M $service/$type 2> /dev/null", $out, $ret); //* Postfix >= 2.11
			if (!isset($out[0])) { //* try Postfix 2.9
				exec ("postconf -M $service.$type 2> /dev/null", $out, $ret);
			}
			$postfix_service = @($out[0]=='')?false:true;
		} else { //* fallback - Postfix < 2.9
			$content = rf($conf['postfix']['config_dir'].'/master.cf');
			$regex = "/^((?!#)".$service.".*".$type.".*)$/m"; 
			$postfix_service = @(preg_match($regex, $content))?true:false;
		}

		return $postfix_service;
	}

	public function remove_postfix_service( $service, $type ) {
		global $conf;

		// nothing to do if the service isn't even defined.
		if (! $this->get_postfix_service( $service, $type ) ) {
			return true;
		}

		$postfix_version = `postconf -d mail_version 2>/dev/null`;
		$postfix_version = preg_replace( '/mail_version\s*=\s*(.*)\s*/', '$1', $postfix_version );

		if ( version_compare( $postfix_version, '2.11', '>=' ) ) {

			exec("postconf -X -M $service/$type 2> /dev/null", $out, $ret);

			# reduce 3 or more newlines to 2
			$content = rf($conf['postfix']['config_dir'].'/master.cf');
			$content = preg_replace( '/(\r?\n){3,}/', '$1$1', $content );
			wf( $conf['postfix']['config_dir'].'/master.cf', $content );

		} else { //* fallback - Postfix < 2.11

			if ( ! $cf = fopen( $conf['postfix']['config_dir'].'/master.cf', 'r' ) ) {
				return false;
			}

			$out = "";
			$reading_service = false;

			while ( !feof( $cf ) ) {
				$line = fgets( $cf );

				if ( $reading_service ) {
					# regex matches a new service or "empty" (whitespace) line
					if ( preg_match( '/^([^\s#]+.*|\s*)$/', $line ) &&
					   ! preg_match( '/^'.$service.'\s+'.$type.'/', $line ) ) {
						$out .= $line;
						$reading_service = false;
					}

					# $skipped_lines .= $line;

				# regex matches definition matching service to be removed
				} else if ( preg_match( '/^'.$service.'\s+'.$type.'/', $line ) ) {

					$reading_service = true;
					# $skipped_lines .= $line;

				} else {
					$out .= $line;
				}
			}
			fclose( $cf );

			$out = preg_replace( '/(\r?\n){3,}/', '$1$1', $out ); # reduce 3 or more newlines to 2

			return wf( $conf['postfix']['config_dir'].'/master.cf', $out );
		}

		return true;
	}

	public function configure_postfix($options = '') {
		global $conf,$autoinstall;
		$cf = $conf['postfix'];
		$config_dir = $cf['config_dir'];

		if(!is_dir($config_dir)) {
			$this->error("The postfix configuration directory '$config_dir' does not exist.");
		}

		//* mysql-virtual_domains.cf
		$this->process_postfix_config('mysql-virtual_domains.cf');

		//* mysql-virtual_forwardings.cf
		$this->process_postfix_config('mysql-virtual_forwardings.cf');

		//* mysql-virtual_mailboxes.cf
		$this->process_postfix_config('mysql-virtual_mailboxes.cf');

		//* mysql-virtual_email2email.cf
		$this->process_postfix_config('mysql-virtual_email2email.cf');

		//* mysql-virtual_transports.cf
		$this->process_postfix_config('mysql-virtual_transports.cf');

		//* mysql-virtual_recipient.cf
		$this->process_postfix_config('mysql-virtual_recipient.cf');

		//* mysql-virtual_sender.cf
		$this->process_postfix_config('mysql-virtual_sender.cf');

		//* mysql-virtual_sender_login_maps.cf
		$this->process_postfix_config('mysql-virtual_sender_login_maps.cf');

		//* mysql-virtual_client.cf
		$this->process_postfix_config('mysql-virtual_client.cf');

		//* mysql-virtual_relaydomains.cf
		$this->process_postfix_config('mysql-virtual_relaydomains.cf');

		//* mysql-virtual_relayrecipientmaps.cf
		$this->process_postfix_config('mysql-virtual_relayrecipientmaps.cf');
		
		//* mysql-virtual_outgoing_bcc.cf
		$this->process_postfix_config('mysql-virtual_outgoing_bcc.cf');

		//* mysql-virtual_policy_greylist.cf
		$this->process_postfix_config('mysql-virtual_policy_greylist.cf');

		//* mysql-virtual_gids.cf.master
		$this->process_postfix_config('mysql-virtual_gids.cf');

		//* mysql-virtual_uids.cf
		$this->process_postfix_config('mysql-virtual_uids.cf');

		// test if lmtp if available
		$configure_lmtp = $this->get_postfix_service('lmtp','unix');

		//* postfix-dkim
		$filename='tag_as_originating.re';
		$full_file_name=$config_dir.'/'.$filename;
		if(is_file($full_file_name)) copy($full_file_name, $full_file_name.'~');
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/postfix-'.$filename.'.master', 'tpl/postfix-'.$filename.'.master');
		if($configure_lmtp) {
			$content = preg_replace('/amavis:/', 'lmtp:', $content);
		}
		wf($full_file_name, $content);

		$filename='tag_as_foreign.re';
		$full_file_name=$config_dir.'/'.$filename;
		if(is_file($full_file_name)) copy($full_file_name, $full_file_name.'~');
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/postfix-'.$filename.'.master', 'tpl/postfix-'.$filename.'.master');
		if($configure_lmtp) {
			$content = preg_replace('/amavis:/', 'lmtp:', $content);
		}
		wf($full_file_name, $content);

		//* Changing mode and group of the new created config files.
		caselog('chmod u=rw,g=r,o= '.$config_dir.'/mysql-virtual_*.cf* &> /dev/null',
			__FILE__, __LINE__, 'chmod on mysql-virtual_*.cf*', 'chmod on mysql-virtual_*.cf* failed');
		caselog('chgrp '.$cf['group'].' '.$config_dir.'/mysql-virtual_*.cf* &> /dev/null',
			__FILE__, __LINE__, 'chgrp on mysql-virtual_*.cf*', 'chgrp on mysql-virtual_*.cf* failed');

		//* Creating virtual mail user and group
		$command = 'groupadd -g '.$cf['vmail_groupid'].' '.$cf['vmail_groupname'];
		if(!is_group($cf['vmail_groupname'])) caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		$command = 'useradd -g '.$cf['vmail_groupname'].' -u '.$cf['vmail_userid'].' '.$cf['vmail_username'].' -d '.$cf['vmail_mailbox_base'].' -m';
		if(!is_user($cf['vmail_username'])) caselog("$command &> /dev/null", __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* These postconf commands will be executed on installation and update
		$server_ini_rec = $this->db->queryOneRecord("SELECT config FROM ?? WHERE server_id = ?", $conf["mysql"]["database"] . '.server', $conf['server_id']);
		$server_ini_array = ini_to_array(stripslashes($server_ini_rec['config']));
		unset($server_ini_rec);

		//* If there are RBL's defined, format the list and add them to smtp_recipient_restrictions to prevent removeal after an update
		$rbl_list = '';
		if (@isset($server_ini_array['mail']['realtime_blackhole_list']) && $server_ini_array['mail']['realtime_blackhole_list'] != '') {
			$rbl_hosts = explode(",", str_replace(" ", "", $server_ini_array['mail']['realtime_blackhole_list']));
			foreach ($rbl_hosts as $key => $value) {
				$rbl_list .= ", reject_rbl_client ". $value;
			}
		}
		unset($rbl_hosts);

		//* If Postgrey is installed, configure it
		$greylisting = '';
		if($conf['postgrey']['installed'] == true) {
			$greylisting = ', check_recipient_access mysql:/etc/postfix/mysql-virtual_policy_greylist.cf';
		}
		
		$reject_sender_login_mismatch = '';
		if(isset($server_ini_array['mail']['reject_sender_login_mismatch']) && ($server_ini_array['mail']['reject_sender_login_mismatch'] == 'y')) {
			$reject_sender_login_mismatch = ', reject_authenticated_sender_login_mismatch';
		}
		unset($server_ini_array);
		
		$tmp = str_replace('.','\.',$conf['hostname']);

		$postconf_placeholders = array('{config_dir}' => $config_dir,
			'{vmail_mailbox_base}' => $cf['vmail_mailbox_base'],
			'{vmail_userid}' => $cf['vmail_userid'],
			'{vmail_groupid}' => $cf['vmail_groupid'],
			'{rbl_list}' => $rbl_list,
			'{greylisting}' => $greylisting,
			'{reject_slm}' => $reject_sender_login_mismatch,
			'{myhostname}' => $tmp,
		);

		$postconf_tpl = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/debian_postfix.conf.master', 'tpl/debian_postfix.conf.master');
		$postconf_tpl = strtr($postconf_tpl, $postconf_placeholders);
		$postconf_commands = array_filter(explode("\n", $postconf_tpl)); // read and remove empty lines

		//* These postconf commands will be executed on installation only
		if($this->is_update == false) {
			$postconf_commands = array_merge($postconf_commands, array(
					'myhostname = '.$conf['hostname'],
					'mydestination = '.$conf['hostname'].', localhost, localhost.localdomain',
					'mynetworks = 127.0.0.0/8 [::1]/128'
				));
		}

		//* Create the header and body check files
		touch($config_dir.'/header_checks');
		touch($config_dir.'/mime_header_checks');
		touch($config_dir.'/nested_header_checks');
		touch($config_dir.'/body_checks');

		//* Create the mailman files
		if(!is_dir('/var/lib/mailman/data')) exec('mkdir -p /var/lib/mailman/data');
		if(!is_file('/var/lib/mailman/data/aliases')) touch('/var/lib/mailman/data/aliases');
		exec('postalias /var/lib/mailman/data/aliases');
		if(!is_file('/var/lib/mailman/data/virtual-mailman')) touch('/var/lib/mailman/data/virtual-mailman');
		exec('postmap /var/lib/mailman/data/virtual-mailman');
		if(!is_file('/var/lib/mailman/data/transport-mailman')) touch('/var/lib/mailman/data/transport-mailman');
		exec('/usr/sbin/postmap /var/lib/mailman/data/transport-mailman');

		//* Create auxillary postfix conf files
		$configfile = 'helo_access';
		if(is_file($config_dir.'/'.$configfile)) {
			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
			chmod($config_dir.'/'.$configfile.'~', 0400);
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = strtr($content, $postconf_placeholders);
		# todo: look up this server's ip addrs and loop through each
		# todo: look up domains hosted on this server and loop through each
		wf($config_dir.'/'.$configfile, $content);

		$configfile = 'blacklist_helo';
		if(is_file($config_dir.'/'.$configfile)) {
			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
			chmod($config_dir.'/'.$configfile.'~', 0400);
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = strtr($content, $postconf_placeholders);
		wf($config_dir.'/'.$configfile, $content);

		//* Make a backup copy of the main.cf file
		copy($config_dir.'/main.cf', $config_dir.'/main.cf~');

		//* Executing the postconf commands
		foreach($postconf_commands as $cmd) {
			$command = "postconf -e '$cmd'";
			caselog($command." &> /dev/null", __FILE__, __LINE__, 'EXECUTED: '.$command, 'Failed to execute the command '.$command);
		}

		if(!stristr($options, 'dont-create-certs')) {
			//* Create the SSL certificate
			if(AUTOINSTALL){
				$command = 'cd '.$config_dir.'; '
					."openssl req -new -subj '/C=".escapeshellcmd($autoinstall['ssl_cert_country'])."/ST=".escapeshellcmd($autoinstall['ssl_cert_state'])."/L=".escapeshellcmd($autoinstall['ssl_cert_locality'])."/O=".escapeshellcmd($autoinstall['ssl_cert_organisation'])."/OU=".escapeshellcmd($autoinstall['ssl_cert_organisation_unit'])."/CN=".escapeshellcmd($autoinstall['ssl_cert_common_name'])."' -outform PEM -out smtpd.cert -newkey rsa:4096 -nodes -keyout smtpd.key -keyform PEM -days 3650 -x509";
			} else {
				$command = 'cd '.$config_dir.'; '
					.'openssl req -new -outform PEM -out smtpd.cert -newkey rsa:4096 -nodes -keyout smtpd.key -keyform PEM -days 3650 -x509';
			}
			exec($command);

			$command = 'chmod o= '.$config_dir.'/smtpd.key';
			caselog($command.' &> /dev/null', __FILE__, __LINE__, 'EXECUTED: '.$command, 'Failed to execute the command '.$command);
		}

		//** We have to change the permissions of the courier authdaemon directory to make it accessible for maildrop.
		$command = 'chmod 755  /var/run/courier/authdaemon/';
		if(is_file('/var/run/courier/authdaemon/')) caselog($command.' &> /dev/null', __FILE__, __LINE__, 'EXECUTED: '.$command, 'Failed to execute the command '.$command);

		//* Check maildrop service in posfix master.cf
		$regex = "/^maildrop   unix.*pipe flags=DRhu user=vmail argv=\\/usr\\/bin\\/maildrop -d ".$cf['vmail_username']." \\$\{extension} \\$\{recipient} \\$\{user} \\$\{nexthop} \\$\{sender}/";
		$configfile = $config_dir.'/master.cf';
		if($this->get_postfix_service('maildrop', 'unix')) {
			exec ("postconf -M maildrop.unix 2> /dev/null", $out, $ret);
			$change_maildrop_flags = @(preg_match($regex, $out[0]) && $out[0] !='')?false:true;
		} else {
			$change_maildrop_flags = @(preg_match($regex, $configfile))?false:true;
		}
		if ($change_maildrop_flags) {
			//* Change maildrop service in posfix master.cf
			if(is_file($config_dir.'/master.cf')) {
				copy($config_dir.'/master.cf', $config_dir.'/master.cf~');
			}
			if(is_file($config_dir.'/master.cf~')) {
				chmod($config_dir.'/master.cf~', 0400);
 			}
			$configfile = $config_dir.'/master.cf';
			$content = rf($configfile);
			$content =	str_replace('flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}',
						'flags=DRhu user='.$cf['vmail_username'].' argv=/usr/bin/maildrop -d '.$cf['vmail_username'].' ${extension} ${recipient} ${user} ${nexthop} ${sender}',
						$content);
			wf($configfile, $content);
		}

		//* Writing the Maildrop mailfilter file
		$configfile = 'mailfilter';
		if(is_file($cf['vmail_mailbox_base'].'/.'.$configfile)) {
			copy($cf['vmail_mailbox_base'].'/.'.$configfile, $cf['vmail_mailbox_base'].'/.'.$configfile.'~');
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{dist_postfix_vmail_mailbox_base}', $cf['vmail_mailbox_base'], $content);
		wf($cf['vmail_mailbox_base'].'/.'.$configfile, $content);

		//* Create the directory for the custom mailfilters
		if(!is_dir($cf['vmail_mailbox_base'].'/mailfilters')) {
			$command = 'mkdir '.$cf['vmail_mailbox_base'].'/mailfilters';
			caselog($command." &> /dev/null", __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		}

		//* Chmod and chown the .mailfilter file
		$command = 'chown '.$cf['vmail_username'].':'.$cf['vmail_groupname'].' '.$cf['vmail_mailbox_base'].'/.mailfilter';
		caselog($command." &> /dev/null", __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		$command = 'chmod 600 '.$cf['vmail_mailbox_base'].'/.mailfilter';
		caselog($command." &> /dev/null", __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

	}
	
	public function configure_saslauthd() {
		global $conf;

		//* Get saslsauthd version
		exec('saslauthd -v 2>&1', $out);
		$parts = explode(' ', $out[0]);
		$saslversion = $parts[1];
		unset($parts);
		unset($out);

		if(version_compare($saslversion , '2.1.23', '<=')) {
			//* Configfile for saslauthd versions up to 2.1.23
			$configfile = 'sasl_smtpd.conf';
		} else {
			//* Configfile for saslauthd versions 2.1.24 and newer
			$configfile = 'sasl_smtpd2.conf';
		}

		if(is_file($conf['postfix']['config_dir'].'/sasl/smtpd.conf')) copy($conf['postfix']['config_dir'].'/sasl/smtpd.conf', $conf['postfix']['config_dir'].'/sasl/smtpd.conf~');
		if(is_file($conf['postfix']['config_dir'].'/sasl/smtpd.conf~')) chmod($conf['postfix']['config_dir'].'/sasl/smtpd.conf~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		wf($conf['postfix']['config_dir'].'/sasl/smtpd.conf', $content);

		// TODO: Chmod and chown on the config file


		// Recursively create the spool directory
		if(!@is_dir('/var/spool/postfix/var/run/saslauthd')) mkdir('/var/spool/postfix/var/run/saslauthd', 0755, true);

		// Edit the file /etc/default/saslauthd
		$configfile = $conf['saslauthd']['config'];
		if(is_file($configfile)) copy($configfile, $configfile.'~');
		if(is_file($configfile.'~')) chmod($configfile.'~', 0400);
		$content = rf($configfile);
		$content = str_replace('START=no', 'START=yes', $content);
		// Debian
		$content = str_replace('OPTIONS="-c"', 'OPTIONS="-m /var/spool/postfix/var/run/saslauthd -r"', $content);
		// Ubuntu
		$content = str_replace('OPTIONS="-c -m /var/run/saslauthd"', 'OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r"', $content);
		wf($configfile, $content);

		// Edit the file /etc/init.d/saslauthd
		$configfile = $conf['init_scripts'].'/'.$conf['saslauthd']['init_script'];
		$content = rf($configfile);
		$content = str_replace('PIDFILE=$RUN_DIR/saslauthd.pid', 'PIDFILE="/var/spool/postfix/var/run/${NAME}/saslauthd.pid"', $content);
		wf($configfile, $content);

		// add the postfix user to the sasl group (at least necessary for Ubuntu 8.04 and most likely Debian Lenny as well.
		exec('adduser postfix sasl');


	}

	public function configure_pam() {
		global $conf;
		$pam = $conf['pam'];
		//* configure pam for SMTP authentication agains the ispconfig database
		$configfile = 'pamd_smtp';
		if(is_file($pam.'/smtp'))    copy($pam.'/smtp', $pam.'/smtp~');
		if(is_file($pam.'/smtp~'))   chmod($pam.'/smtp~', 0400);

		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		wf($pam.'/smtp', $content);
		// On some OSes smtp is world readable which allows for reading database information.  Removing world readable rights should have no effect.
		if(is_file($pam.'/smtp'))    exec("chmod o= $pam/smtp");
		chmod($pam.'/smtp', 0660);
		chown($pam.'/smtp', 'daemon');
		chgrp($pam.'/smtp', 'daemon');

	}

	public function configure_courier() {
		global $conf;
		$config_dir = $conf['courier']['config_dir'];
		//* authmysqlrc
		$configfile = 'authmysqlrc';
		if(is_file($config_dir.'/'.$configfile)) {
			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
		}
		chmod($config_dir.'/'.$configfile.'~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_host}', $conf['mysql']['host'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);
		wf($config_dir.'/'.$configfile, $content);

		chmod($config_dir.'/'.$configfile, 0660);
		chown($config_dir.'/'.$configfile, 'daemon');
		chgrp($config_dir.'/'.$configfile, 'daemon');

		//* authdaemonrc
		$configfile = $config_dir.'/authdaemonrc';
		if(is_file($configfile)) {
			copy($configfile, $configfile.'~');
		}
		if(is_file($configfile.'~')) {
			chmod($configfile.'~', 0400);
		}
		$content = rf($configfile);
		$content = str_replace('authmodulelist="authpam"', 'authmodulelist="authmysql"', $content);
		wf($configfile, $content);
	}

	public function configure_dovecot() {
		global $conf;
	
		$virtual_transport = 'dovecot';

		$configure_lmtp = false;

		// use lmtp if installed
		if($configure_lmtp = is_file('/usr/lib/dovecot/lmtp')) {
			$virtual_transport = 'lmtp:unix:private/dovecot-lmtp';
		}

		// check if virtual_transport must be changed
		if ($this->is_update) {
			$tmp = $this->db->queryOneRecord("SELECT * FROM ?? WHERE server_id = ?", $conf["mysql"]["database"] . ".server", $conf['server_id']);
			$ini_array = ini_to_array(stripslashes($tmp['config']));
			// ini_array needs not to be checked, because already done in update.php -> updateDbAndIni()
			
			if(isset($ini_array['mail']['mailbox_virtual_uidgid_maps']) && $ini_array['mail']['mailbox_virtual_uidgid_maps'] == 'y') {
				$virtual_transport = 'lmtp:unix:private/dovecot-lmtp';
				$configure_lmtp = true;
			}
		}

		$config_dir = $conf['postfix']['config_dir'];

		//* Configure master.cf and add a line for deliver
		if(!$this->get_postfix_service('dovecot', 'unix')) {
 			//* backup
			if(is_file($config_dir.'/master.cf')){
				copy($config_dir.'/master.cf', $config_dir.'/master.cf~2');
			}
			if(is_file($config_dir.'/master.cf~')){
				chmod($config_dir.'/master.cf~2', 0400);
			}
			//* Configure master.cf and add a line for deliver
			$content = rf($conf["postfix"]["config_dir"].'/master.cf');
			$deliver_content = 'dovecot   unix  -       n       n       -       -       pipe'."\n".'  flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -f ${sender} -d ${user}@${nexthop}'."\n";
			af($config_dir.'/master.cf', $deliver_content);
			unset($content);
			unset($deliver_content);
		}

		//* Reconfigure postfix to use dovecot authentication
		// Adding the amavisd commands to the postfix configuration
		$postconf_commands = array (
			'dovecot_destination_recipient_limit = 1',
			'virtual_transport = '.$virtual_transport,
			'smtpd_sasl_type = dovecot',
			'smtpd_sasl_path = private/auth'
		);

		// Make a backup copy of the main.cf file
		copy($conf['postfix']['config_dir'].'/main.cf', $conf['postfix']['config_dir'].'/main.cf~3');

		// Executing the postconf commands
		foreach($postconf_commands as $cmd) {
			$command = "postconf -e '$cmd'";
			caselog($command." &> /dev/null", __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		}

		//* backup dovecot.conf
		$config_dir = $conf['dovecot']['config_dir'];
		$configfile = 'dovecot.conf';
		if(is_file($config_dir.'/'.$configfile)) {
			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
		}

		//* Get the dovecot version
		exec('dovecot --version', $tmp);
		$dovecot_version = $tmp[0];
		unset($tmp);

		//* Copy dovecot configuration file
		if(version_compare($dovecot_version,1, '<=')) {	//* Dovecot 1.x
			if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/debian_dovecot.conf.master')) {
				copy($conf['ispconfig_install_dir'].'/server/conf-custom/install/debian_dovecot.conf.master', $config_dir.'/'.$configfile);
			} else {
				copy('tpl/debian_dovecot.conf.master', $config_dir.'/'.$configfile);
			}
		} else {	//* Dovecot 2.x
			if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/debian_dovecot2.conf.master')) {
				copy($conf['ispconfig_install_dir'].'/server/conf-custom/install/debian_dovecot2.conf.master', $config_dir.'/'.$configfile);
			} else {
				copy('tpl/debian_dovecot2.conf.master', $config_dir.'/'.$configfile);
			}
			replaceLine($config_dir.'/'.$configfile, 'postmaster_address = postmaster@example.com', 'postmaster_address = postmaster@'.$conf['hostname'], 1, 0);
			replaceLine($config_dir.'/'.$configfile, 'postmaster_address = webmaster@localhost', 'postmaster_address = postmaster@'.$conf['hostname'], 1, 0);
			if(version_compare($dovecot_version, 2.1, '<')) {
				removeLine($config_dir.'/'.$configfile, 'ssl_protocols =');
			}
			if(version_compare($dovecot_version,2.2) >= 0) {
				// Dovecot > 2.2 does not recognize !SSLv2 anymore on Debian 9
				$content = file_get_contents($config_dir.'/'.$configfile);
				$content = str_replace('!SSLv2','',$content);
				file_put_contents($config_dir.'/'.$configfile,$content);
				unset($content);
			}
			if(version_compare($dovecot_version,2.3) >= 0) {
				// Remove deprecated setting(s)
				removeLine($config_dir.'/'.$configfile, 'ssl_protocols =');
				
				// Check if we have a dhparams file and if not, create it
				if(!file_exists('/etc/dovecot/dh.pem')) {
					swriteln('Creating new DHParams file, this takes several minutes. Do not interrupt the script.');
					if(file_exists('/var/lib/dovecot/ssl-parameters.dat')) {
						// convert existing ssl parameters file
						$command = 'dd if=/var/lib/dovecot/ssl-parameters.dat bs=1 skip=88 | openssl dhparam -inform der > /etc/dovecot/dh.pem';
						caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
					} else {
						/*
						   Create a new dhparams file. We use 2048 bit only as it simply takes too long
						   on smaller systems to generate a 4096 bit dh file (> 30 minutes). If you need
						   a 4096 bit file, create it manually before you install ISPConfig
						*/
						$command = 'openssl dhparam -out /etc/dovecot/dh.pem 2048';
						caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
					}
				}
				//remove #2.3+ comment
				$content = file_get_contents($config_dir.'/'.$configfile);
				$content = str_replace('#2.3+ ','',$content);
				file_put_contents($config_dir.'/'.$configfile,$content);
				unset($content);
				
			} else {
				// remove settings which are not supported in Dovecot < 2.3
				removeLine($config_dir.'/'.$configfile, 'ssl_min_protocol =');
				removeLine($config_dir.'/'.$configfile, 'ssl_dh =');
			}
		}

		$dovecot_protocols = 'imap pop3';

		//* dovecot-lmtpd
		if($configure_lmtp) {
			$dovecot_protocols .= ' lmtp';
		}

		//* dovecot-managesieved
		if(is_file('/usr/lib/dovecot/managesieve')) {
			$dovecot_protocols .= ' sieve';
		}

		replaceLine($config_dir.'/'.$configfile, 'protocols = imap pop3', "protocols = $dovecot_protocols", 1, 0);

		//* dovecot-sql.conf
		$configfile = 'dovecot-sql.conf';
		if(is_file($config_dir.'/'.$configfile)) {
			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
		}
		if(is_file($config_dir.'/'.$configfile.'~')) chmod($config_dir.'/'.$configfile.'~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/debian_dovecot-sql.conf.master', 'tpl/debian_dovecot-sql.conf.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_host}', $conf['mysql']['host'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);
		$content = str_replace('{server_id}', $conf['server_id'], $content);
		# enable iterate_query for dovecot2
		if(version_compare($dovecot_version,2, '>=')) {
			$content = str_replace('# iterate_query', 'iterate_query', $content);
		}
		wf($config_dir.'/'.$configfile, $content);

		chmod($config_dir.'/'.$configfile, 0600);
		chown($config_dir.'/'.$configfile, 'root');
		chgrp($config_dir.'/'.$configfile, 'root');
		
		// Dovecot shall ignore mounts in website directory
		if(is_installed('doveadm')) exec("doveadm mount add '/var/www/*' ignore > /dev/null 2> /dev/null");

	}

	public function configure_amavis() {
		global $conf;

		// amavisd user config file
		$configfile = 'amavisd_user_config';
		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) copy($conf['amavis']['config_dir'].'/conf.d/50-user', $conf['amavis']['config_dir'].'/50-user~');
		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);
		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		wf($conf['amavis']['config_dir'].'/conf.d/50-user', $content);
		chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);

		// TODO: chmod and chown on the config file

		// test if lmtp if available
		$configure_lmtp = $this->get_postfix_service('lmtp','unix');

		// Adding the amavisd commands to the postfix configuration
		// Add array for no error in foreach and maybe future options
		$postconf_commands = array ();

		// Check for amavisd -> pure webserver with postfix for mailing without antispam
		if ($conf['amavis']['installed']) {
			$content_filter_service = ($configure_lmtp) ? 'lmtp' : 'amavis';
			$postconf_commands[] = "content_filter = ${content_filter_service}:[127.0.0.1]:10024";
			$postconf_commands[] = 'receive_override_options = no_address_mappings';
		}

		// Make a backup copy of the main.cf file
		copy($conf['postfix']['config_dir'].'/main.cf', $conf['postfix']['config_dir'].'/main.cf~2');

		// Executing the postconf commands
		foreach($postconf_commands as $cmd) {
			$command = "postconf -e '$cmd'";
			caselog($command." &> /dev/null", __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		}

		$config_dir = $conf['postfix']['config_dir'];

		// Adding amavis-services to the master.cf file if the service does not already exists
//		$add_amavis = !$this->get_postfix_service('amavis','unix');
//		$add_amavis_10025 = !$this->get_postfix_service('127.0.0.1:10025','inet');
//		$add_amavis_10027 = !$this->get_postfix_service('127.0.0.1:10027','inet');
		//*TODO: check templates against existing postfix-services to make sure we use the template

		// Or just remove the old service definitions and add them again?
		$add_amavis = $this->remove_postfix_service('amavis','unix');
		$add_amavis_10025 = $this->remove_postfix_service('127.0.0.1:10025','inet');
		$add_amavis_10027 = $this->remove_postfix_service('127.0.0.1:10027','inet');

		if ($add_amavis || $add_amavis_10025 || $add_amavis_10027) {
			//* backup master.cf
			if(is_file($config_dir.'/master.cf')) copy($config_dir.'/master.cf', $config_dir.'/master.cf~');
			// adjust amavis-config
			if($add_amavis) {
				$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/master_cf_amavis.master', 'tpl/master_cf_amavis.master');
				af($config_dir.'/master.cf', $content);
				unset($content);
			}
			if ($add_amavis_10025) {
				$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/master_cf_amavis10025.master', 'tpl/master_cf_amavis10025.master');
				af($config_dir.'/master.cf', $content);
				unset($content);
			}
			if ($add_amavis_10027) {
				$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/master_cf_amavis10027.master', 'tpl/master_cf_amavis10027.master');
				af($config_dir.'/master.cf', $content);
				unset($content);
    		}
		}

		// Add the clamav user to the amavis group
		exec('adduser clamav amavis');
		// get shell-group for amavis
		$amavis_group=exec('grep -o "^amavis:\|^vscan:" /etc/group');
		if(!empty($amavis_group)) {
			$amavis_group=rtrim($amavis_group, ":");
		}
		// get shell-user for amavis
		$amavis_user=exec('grep -o "^amavis:\|^vscan:" /etc/passwd');
		if(!empty($amavis_user)) {
			$amavis_user=rtrim($amavis_user, ":");
		}

		// Create the director for DKIM-Keys
		if(!is_dir('/var/lib/amavis')) mkdir('/var/lib/amavis', 0750, true);
		if(!empty($amavis_user)) exec('chown '.$amavis_user.' /var/lib/amavis');
		if(!empty($amavis_group)) exec('chgrp '.$amavis_group.' /var/lib/amavis');
		if(!is_dir('/var/lib/amavis/dkim')) mkdir('/var/lib/amavis/dkim', 0750);
		if(!empty($amavis_user)) exec('chown -R '.$amavis_user.' /var/lib/amavis/dkim');
		if(!empty($amavis_group)) exec('chgrp -R '.$amavis_group.' /var/lib/amavis/dkim');

	}

	public function configure_rspamd() {
		global $conf;
		
		//* These postconf commands will be executed on installation and update
		$server_ini_rec = $this->db->queryOneRecord("SELECT config FROM ?? WHERE server_id = ?", $conf["mysql"]["database"] . '.server', $conf['server_id']);
		$server_ini_array = ini_to_array(stripslashes($server_ini_rec['config']));
		unset($server_ini_rec);
		
		$mail_config = $server_ini_array['mail'];
		if($mail_config['content_filter'] === 'rspamd') {
			exec("postconf -X 'receive_override_options'");
			exec("postconf -X 'content_filter'");

			exec("postconf -e 'smtpd_milters = inet:localhost:11332'");
			exec("postconf -e 'non_smtpd_milters = inet:localhost:11332'");
			exec("postconf -e 'milter_protocol = 6'");
			exec("postconf -e 'milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}'");
			exec("postconf -e 'milter_default_action = accept'");

			exec("postconf -e 'smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf, permit_mynetworks, permit_sasl_authenticated'");

			$new_options = array();
			$options = preg_split("/,\s*/", exec("postconf -h smtpd_recipient_restrictions"));
			foreach ($options as $value) {
				if (!preg_match('/check_policy_service\s+inet:127.0.0.1:10023/', $value)) {
					$new_options[] = $value;
				}
			}
			exec("postconf -e 'smtpd_recipient_restrictions = ".implode(", ", $new_options)."'");
			
		}

		if(is_user('_rspamd') && is_group('amavis')) {
			exec("usermod -G amavis _rspamd");
		} elseif(is_user('rspamd') && is_group('amavis')) {
			exec("usermod -G amavis rspamd");
		}
				
		if(!is_dir('/etc/rspamd/local.d/')){
			mkdir('/etc/rspamd/local.d/', 0755, true);
		}

		if(!is_dir('/etc/rspamd/override.d/')){
			mkdir('/etc/rspamd/override.d/', 0755, true);
		}
		
		if ( substr($mail_config['dkim_path'], strlen($mail_config['dkim_path'])-1) == '/' ) {
			$mail_config['dkim_path'] = substr($mail_config['dkim_path'], 0, strlen($mail_config['dkim_path'])-1);
		}
		$dkim_domains = $this->db->queryAllRecords('SELECT `dkim_selector`, `domain` FROM ?? WHERE `dkim` = ? ORDER BY `domain` ASC', $conf['mysql']['database'] . '.mail_domain', 'y');
		$fpp = fopen('/etc/rspamd/local.d/dkim_domains.map', 'w');
		$fps = fopen('/etc/rspamd/local.d/dkim_selectors.map', 'w');
		foreach($dkim_domains as $dkim_domain) {
			fwrite($fpp, $dkim_domain['domain'] . ' ' . $mail_config['dkim_path'] . '/' . $dkim_domain['domain'] . '.private' . "\n");
			fwrite($fps, $dkim_domain['domain'] . ' ' . $dkim_domain['dkim_selector'] . "\n");
		}
		fclose($fpp);
		fclose($fps);
		unset($dkim_domains);

		$tpl = new tpl();
		$tpl->newTemplate('rspamd_users.conf.master');

		$whitelist_ips = array();
		$ips = $this->db->queryAllRecords("SELECT * FROM server_ip WHERE server_id = ?", $conf['server_id']);
		if(is_array($ips) && !empty($ips)){
			foreach($ips as $ip){
				$whitelist_ips[] = array('ip' => $ip['ip_address']);
			}
		}
		$tpl->setLoop('whitelist_ips', $whitelist_ips);
		wf('/etc/rspamd/local.d/users.conf', $tpl->grab());

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_groups.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_groups.conf.master /etc/rspamd/local.d/groups.conf');
		} else {
			exec('cp tpl/rspamd_groups.conf.master /etc/rspamd/local.d/groups.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_antivirus.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_antivirus.conf.master /etc/rspamd/local.d/antivirus.conf');
		} else {
			exec('cp tpl/rspamd_antivirus.conf.master /etc/rspamd/local.d/antivirus.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_classifier-bayes.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_classifier-bayes.conf.master /etc/rspamd/local.d/classifier-bayes.conf');
		} else {
			exec('cp tpl/rspamd_classifier-bayes.conf.master /etc/rspamd/local.d/classifier-bayes.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_greylist.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_greylist.conf.master /etc/rspamd/local.d/greylist.conf');
		} else {
			exec('cp tpl/rspamd_greylist.conf.master /etc/rspamd/local.d/greylist.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_symbols_antivirus.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_symbols_antivirus.conf.master /etc/rspamd/local.d/antivirus_group.conf');
		} else {
			exec('cp tpl/rspamd_symbols_antivirus.conf.master /etc/rspamd/local.d/antivirus_group.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_override_rbl.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_override_rbl.conf.master /etc/rspamd/override.d/rbl_group.conf');
		} else {
			exec('cp tpl/rspamd_override_rbl.conf.master /etc/rspamd/override.d/rbl_group.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_override_surbl.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_override_surbl.conf.master /etc/rspamd/override.d/surbl_group.conf');
		} else {
			exec('cp tpl/rspamd_override_surbl.conf.master /etc/rspamd/override.d/surbl_group.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_mx_check.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_mx_check.conf.master /etc/rspamd/local.d/mx_check.conf');
		} else {
			exec('cp tpl/rspamd_mx_check.conf.master /etc/rspamd/local.d/mx_check.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_redis.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_redis.conf.master /etc/rspamd/local.d/redis.conf');
		} else {
			exec('cp tpl/rspamd_redis.conf.master /etc/rspamd/local.d/redis.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_milter_headers.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_milter_headers.conf.master /etc/rspamd/local.d/milter_headers.conf');
		} else {
			exec('cp tpl/rspamd_milter_headers.conf.master /etc/rspamd/local.d/milter_headers.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_options.inc.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_options.inc.master /etc/rspamd/local.d/options.inc');
		} else {
			exec('cp tpl/rspamd_options.inc.master /etc/rspamd/local.d/options.inc');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_neural.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_neural.conf.master /etc/rspamd/local.d/neural.conf');
		} else {
			exec('cp tpl/rspamd_neural.conf.master /etc/rspamd/local.d/neural.conf');
		}

		if(file_exists($conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_neural_group.conf.master')) {
			exec('cp '.$conf['ispconfig_install_dir'].'/server/conf-custom/install/rspamd_neural_group.conf.master /etc/rspamd/local.d/neural_group.conf');
		} else {
			exec('cp tpl/rspamd_neural_group.conf.master /etc/rspamd/local.d/neural_group.conf');
		}

		$tpl = new tpl();
		$tpl->newTemplate('rspamd_dkim_signing.conf.master');
		$tpl->setVar('dkim_path', $mail_config['dkim_path']);
		wf('/etc/rspamd/local.d/dkim_signing.conf', $tpl->grab());

		exec('chmod a+r /etc/rspamd/local.d/* /etc/rspamd/override.d/*');
		
		$command = 'usermod -a -G amavis _rspamd';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
			
		if(strpos(rf('/etc/rspamd/rspamd.conf'), '.include "$LOCAL_CONFDIR/local.d/users.conf"') === false){
			af('/etc/rspamd/rspamd.conf', '.include "$LOCAL_CONFDIR/local.d/users.conf"');
		}
		
		if(!isset($mail_config['rspamd_password']) || !$mail_config['rspamd_password']) {
			$mail_config['rspamd_password'] = str_shuffle(bin2hex(openssl_random_pseudo_bytes(12)));
			
			$server_ini_array['mail']['rspamd_password'] = $mail_config['rspamd_password'];
		}

		$server_ini_array['mail']['rspamd_available'] = 'y';
		$server_ini_string = array_to_ini($server_ini_array);
		if($this->dbmaster != $this->db) {
			$this->dbmaster->query('UPDATE `server` SET `config` = ? WHERE `server_id` = ?', $server_ini_string, $conf['server_id']);
		}
		$this->db->query('UPDATE `server` SET `config` = ? WHERE `server_id` = ?', $server_ini_string, $conf['server_id']);
		unset($server_ini_array);
		unset($server_ini_string);
		
		$tpl = new tpl();
		$tpl->newTemplate('rspamd_worker-controller.inc.master');
		$tpl->setVar('rspamd_password', $mail_config['rspamd_password']);
		wf('/etc/rspamd/local.d/worker-controller.inc', $tpl->grab());
		chmod('/etc/rspamd/local.d/worker-controller.inc', 0644);
	}

	public function configure_spamassassin() {
		global $conf;

		//* Enable spamasasssin on debian and ubuntu
		$configfile = '/etc/default/spamassassin';
		if(is_file($configfile)) {
			copy($configfile, $configfile.'~');
		}
		$content = rf($configfile);
		$content = str_replace('ENABLED=0', 'ENABLED=1', $content);
		wf($configfile, $content);
	}

	public function configure_getmail() {
		global $conf;

		$config_dir = $conf['getmail']['config_dir'];

		if(!@is_dir($config_dir)) mkdir(escapeshellcmd($config_dir), 0700, true);

		$command = 'useradd -d '.$config_dir.' getmail';
		if(!is_user('getmail')) caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		$command = "chown -R getmail $config_dir";
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		$command = "chmod -R 700 $config_dir";
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
	}


	public function configure_pureftpd() {
		global $conf;

		$config_dir = $conf['pureftpd']['config_dir'];

		//* configure pure-ftpd for MySQL authentication against the ispconfig database
		$configfile = 'db/mysql.conf';
		if(is_file($config_dir.'/'.$configfile)) {
			copy($config_dir.'/'.$configfile, $config_dir.'/'.$configfile.'~');
		}
		if(is_file($config_dir.'/'.$configfile.'~')) {
			chmod($config_dir.'/'.$configfile.'~', 0400);
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/pureftpd_mysql.conf.master', 'tpl/pureftpd_mysql.conf.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		$content = str_replace('{server_id}', $conf['server_id'], $content);
		wf($config_dir.'/'.$configfile, $content);
		chmod($config_dir.'/'.$configfile, 0600);
		chown($config_dir.'/'.$configfile, 'root');
		chgrp($config_dir.'/'.$configfile, 'root');
		// **enable chrooting
		//exec('mkdir -p '.$config_dir.'/conf/ChrootEveryone');
		exec('echo "yes" > '.$config_dir.'/conf/ChrootEveryone');
		exec('echo "yes" > '.$config_dir.'/conf/BrokenClientsCompatibility');
		exec('echo "yes" > '.$config_dir.'/conf/DisplayDotFiles');

		if(is_file('/etc/default/pure-ftpd-common')) {
			replaceLine('/etc/default/pure-ftpd-common', 'STANDALONE_OR_INETD=inetd', 'STANDALONE_OR_INETD=standalone', 1, 0);
			replaceLine('/etc/default/pure-ftpd-common', 'VIRTUALCHROOT=false', 'VIRTUALCHROOT=true', 1, 0);
		}

		if(is_file('/etc/inetd.conf')) {
			replaceLine('/etc/inetd.conf', '/usr/sbin/pure-ftpd-wrapper', '#ftp     stream  tcp     nowait  root    /usr/sbin/tcpd /usr/sbin/pure-ftpd-wrapper', 0, 0);
			exec($this->getinitcommand('openbsd-inetd', 'restart'));
			//if(is_file($conf['init_scripts'].'/'.'openbsd-inetd')) exec($conf['init_scripts'].'/'.'openbsd-inetd restart');
		}

		if(!is_file('/etc/pure-ftpd/conf/DontResolve')) exec('echo "yes" > /etc/pure-ftpd/conf/DontResolve');
	}

	public function configure_mydns() {
		global $conf;

		// configure pam for SMTP authentication agains the ispconfig database
		$configfile = 'mydns.conf';
		if(is_file($conf['mydns']['config_dir'].'/'.$configfile)) copy($conf['mydns']['config_dir'].'/'.$configfile, $conf['mydns']['config_dir'].'/'.$configfile.'~');
		if(is_file($conf['mydns']['config_dir'].'/'.$configfile.'~')) chmod($conf['mydns']['config_dir'].'/'.$configfile.'~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_host}', $conf['mysql']['host'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);
		$content = str_replace('{server_id}', $conf['server_id'], $content);
		wf($conf['mydns']['config_dir'].'/'.$configfile, $content);
		chmod($conf['mydns']['config_dir'].'/'.$configfile, 0600);
		chown($conf['mydns']['config_dir'].'/'.$configfile, 'root');
		chgrp($conf['mydns']['config_dir'].'/'.$configfile, 'root');

	}

	public function configure_powerdns() {
		global $conf;

		//* Create the database
		if(!$this->db->query('CREATE DATABASE IF NOT EXISTS ?? DEFAULT CHARACTER SET ?', $conf['powerdns']['database'], $conf['mysql']['charset'])) {
			$this->error('Unable to create MySQL database: '.$conf['powerdns']['database'].'.');
		}

		//* Create the ISPConfig database user in the local database
		$query = "GRANT ALL ON ?? TO ?@'localhost'";
		if(!$this->db->query($query, $conf['powerdns']['database'] . '.*', $conf['mysql']['ispconfig_user'])) {
			$this->error('Unable to create user for powerdns database Error: '.$this->db->errorMessage);
		}

		//* load the powerdns databse dump
		if($conf['mysql']['admin_password'] == '') {
			caselog("mysql --default-character-set=".$conf['mysql']['charset']." -h '".$conf['mysql']['host']."' -u '".$conf['mysql']['admin_user']."' '".$conf['powerdns']['database']."' < '".ISPC_INSTALL_ROOT."/install/sql/powerdns.sql' &> /dev/null",
				__FILE__, __LINE__, 'read in ispconfig3.sql', 'could not read in powerdns.sql');
		} else {
			caselog("mysql --default-character-set=".$conf['mysql']['charset']." -h '".$conf['mysql']['host']."' -u '".$conf['mysql']['admin_user']."' -p'".$conf['mysql']['admin_password']."' '".$conf['powerdns']['database']."' < '".ISPC_INSTALL_ROOT."/install/sql/powerdns.sql' &> /dev/null",
				__FILE__, __LINE__, 'read in ispconfig3.sql', 'could not read in powerdns.sql');
		}

		//* Create the powerdns config file
		$configfile = 'pdns.local';
		if(is_file($conf['powerdns']['config_dir'].'/'.$configfile)) copy($conf['powerdns']['config_dir'].'/'.$configfile, $conf['powerdns']['config_dir'].'/'.$configfile.'~');
		if(is_file($conf['powerdns']['config_dir'].'/'.$configfile.'~')) chmod($conf['powerdns']['config_dir'].'/'.$configfile.'~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{powerdns_database}', $conf['powerdns']['database'], $content);
		$content = str_replace('{mysql_server_host}', $conf['mysql']['host'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);
		wf($conf['powerdns']['config_dir'].'/'.$configfile, $content);
		chmod($conf['powerdns']['config_dir'].'/'.$configfile, 0600);
		chown($conf['powerdns']['config_dir'].'/'.$configfile, 'root');
		chgrp($conf['powerdns']['config_dir'].'/'.$configfile, 'root');


	}
	
	//** writes bind configuration files
	public function process_bind_file($configfile, $target='/', $absolute=false) {
		global $conf;

		if ($absolute) $full_file_name = $target.$configfile;
		else $full_file_name = $conf['ispconfig_install_dir'].$target.$configfile;
		
		//* Backup exiting file
		if(is_file($full_file_name)) {
			copy($full_file_name, $config_dir.$configfile.'~');
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_ispconfig_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		$content = str_replace('{ispconfig_install_dir}', $conf['ispconfig_install_dir'], $content);
		$content = str_replace('{dnssec_conffile}', $conf['ispconfig_install_dir'].'/server/scripts/dnssec-config.sh', $content);
		wf($full_file_name, $content);
	}

	public function configure_bind() {
		global $conf;

		//* Check if the zonefile directory has a slash at the end
		$content=$conf['bind']['bind_zonefiles_dir'];
		if(substr($content, -1, 1) != '/') {
			$content .= '/';
		}

		//* Create the slave subdirectory
		$content .= 'slave';
		if(!@is_dir($content)) mkdir($content, 02770, true);

		//* Chown the slave subdirectory to $conf['bind']['bind_user']
		chown($content, $conf['bind']['bind_user']);
		chgrp($content, $conf['bind']['bind_group']);
		chmod($content, 02770);
		
		//* Install scripts for dnssec implementation
		$this->process_bind_file('named.conf.options', '/etc/bind/', true); //TODO replace hardcoded path
	}


    public function configure_xmpp($options = '') {
        global $conf;

        if($conf['xmpp']['installed'] == false) return;
        //* Create the logging directory for xmpp server
        if(!@is_dir('/var/log/metronome')) mkdir('/var/log/metronome', 0755, true);
        chown('/var/log/metronome', 'metronome');
        if(!@is_dir('/var/run/metronome')) mkdir('/var/run/metronome', 0755, true);
        chown('/var/run/metronome', 'metronome');
        if(!@is_dir('/var/lib/metronome')) mkdir('/var/lib/metronome', 0755, true);
        chown('/var/lib/metronome', 'metronome');
        if(!@is_dir('/etc/metronome/hosts')) mkdir('/etc/metronome/hosts', 0755, true);
        if(!@is_dir('/etc/metronome/status')) mkdir('/etc/metronome/status', 0755, true);
        unlink('/etc/metronome/metronome.cfg.lua');

        $row = $this->db->queryOneRecord("SELECT server_name FROM server WHERE server_id = ?", $conf["server_id"]);
        $server_name = $row["server_name"];

        $tpl = new tpl('metronome_conf_main.master');
        wf('/etc/metronome/metronome.cfg.lua', $tpl->grab());
        unset($tpl);

        $tpl = new tpl('metronome_conf_global.master');
        $tpl->setVar('xmpp_admins','');
        wf('/etc/metronome/global.cfg.lua', $tpl->grab());
        unset($tpl);

        // Copy isp libs
        if(!@is_dir('/usr/lib/metronome/isp-modules')) mkdir('/usr/lib/metronome/isp-modules', 0755, true);
        caselog('cp -rf apps/metronome_libs/* /usr/lib/metronome/isp-modules/', __FILE__, __LINE__);
        caselog('chmod 755 /usr/lib/metronome/isp-modules/mod_auth_external/authenticate_isp.sh', __FILE__, __LINE__);
        // Process db config
        $full_file_name = '/usr/lib/metronome/isp-modules/mod_auth_external/db_conf.inc.php';
        $content = rf($full_file_name);
        $content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
        $content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
        $content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
        $content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
        $content = str_replace('{server_id}', $conf['server_id'], $content);
        wf($full_file_name, $content);

        if(!stristr($options, 'dont-create-certs')){
            // Create SSL Certificate for localhost
            // Ensure no line is left blank
			echo "writing new private key to 'localhost.key'\n-----\n";
			$ssl_country = $this->free_query('Country Name (2 letter code)', 'AU','ssl_cert_country');
            $ssl_locality = $this->free_query('Locality Name (eg, city)', 'City Name','ssl_cert_locality');
            $ssl_organisation = $this->free_query('Organization Name (eg, company)', 'Internet Widgits Pty Ltd','ssl_cert_organisation');
            $ssl_organisation_unit = $this->free_query('Organizational Unit Name (eg, section)', 'Infrastructure','ssl_cert_organisation_unit');
            $ssl_domain = $this->free_query('Common Name (e.g. server FQDN or YOUR name)', $conf['hostname'],'ssl_cert_common_name');
            $ssl_email = $this->free_query('Email Address', 'hostmaster@'.$conf['hostname'],'ssl_cert_email');

            $tpl = new tpl('metronome_conf_ssl.master');
            $tpl->setVar('ssl_country',$ssl_country);
            $tpl->setVar('ssl_locality',$ssl_locality);
            $tpl->setVar('ssl_organisation',$ssl_organisation);
            $tpl->setVar('ssl_organisation_unit',$ssl_organisation_unit);
            $tpl->setVar('domain',$ssl_domain);
            $tpl->setVar('ssl_email',$ssl_email);
            wf('/etc/metronome/certs/localhost.cnf', $tpl->grab());
            unset($tpl);
            // Generate new key, csr and cert
            exec("(cd /etc/metronome/certs && make localhost.key)");
            exec("(cd /etc/metronome/certs && make localhost.csr)");
            exec("(cd /etc/metronome/certs && make localhost.cert)");
            exec('chmod 0400 /etc/metronome/certs/localhost.key');
            exec('chown metronome /etc/metronome/certs/localhost.key');

			echo "IMPORTANT:\n";
			echo "Localhost Key, Csr and a self-signed Cert have been saved to /etc/metronome/certs\n";
			echo "In order to work with all clients, the server must have a trusted certificate, so use the Csr\n";
			echo "to get a trusted certificate from your CA or replace Key and Cert with already signed files for\n";
			echo "your domain. Clients like Pidgin dont allow to use untrusted self-signed certificates.\n";
			echo "\n";

        }else{
            /*
			echo "-----\n";
            echo "Metronome XMPP SSL server certificate is not renewed. Run the following command manual as root to recreate it:\n";
            echo "# (cd /etc/metronome/certs && make localhost.key && make localhost.csr && make localhost.cert && chmod 0400 localhost.key && chown metronome localhost.key)\n";
            echo "-----\n";
			*/
        }

        // Copy init script
        caselog('cp -f apps/metronome-init /etc/init.d/metronome', __FILE__, __LINE__);
        caselog('chmod u+x /etc/init.d/metronome', __FILE__, __LINE__);
        caselog('update-rc.d metronome defaults', __FILE__, __LINE__);

        exec($this->getinitcommand($conf['xmpp']['init_script'], 'restart'));
    }


	public function configure_apache() {
		global $conf;

		if($conf['apache']['installed'] == false) return;
		//* Create the logging directory for the vhost logfiles
		if(!@is_dir($conf['ispconfig_log_dir'].'/httpd')) mkdir($conf['ispconfig_log_dir'].'/httpd', 0755, true);

		if(is_file('/etc/suphp/suphp.conf')) {
			replaceLine('/etc/suphp/suphp.conf', 'php="php:/usr/bin', 'x-httpd-suphp="php:/usr/bin/php-cgi"', 0);
			//replaceLine('/etc/suphp/suphp.conf','docroot=','docroot=/var/clients',0);
			replaceLine('/etc/suphp/suphp.conf', 'umask=00', 'umask=0022', 0);
		}

		if(is_file('/etc/apache2/sites-enabled/000-default')) {
			replaceLine('/etc/apache2/sites-available/000-default', 'NameVirtualHost *', 'NameVirtualHost *:80', 1, 0);
			replaceLine('/etc/apache2/sites-available/000-default', '<VirtualHost *>', '<VirtualHost *:80>', 1, 0);
		}

		if(is_file('/etc/apache2/ports.conf')) {
			// add a line "Listen 443" to ports conf if line does not exist
			replaceLine('/etc/apache2/ports.conf', 'Listen 443', 'Listen 443', 1);
			
			// Comment out the namevirtualhost lines, as they were added by ispconfig in ispconfig.conf file again
			replaceLine('/etc/apache2/ports.conf', 'NameVirtualHost *:80', '# NameVirtualHost *:80', 1);
			replaceLine('/etc/apache2/ports.conf', 'NameVirtualHost *:443', '# NameVirtualHost *:443', 1);
		}
		
		if(is_file('/etc/apache2/mods-available/fcgid.conf')) {
			// add or modify the parameters for fcgid.conf
			replaceLine('/etc/apache2/mods-available/fcgid.conf','MaxRequestLen','MaxRequestLen 15728640',1);
		}

		if(is_file('/etc/apache2/apache.conf')) {
			if(hasLine('/etc/apache2/apache.conf', 'Include sites-enabled/', 1) == false) {
				if(hasLine('/etc/apache2/apache.conf', 'IncludeOptional sites-enabled/*.conf', 1) == false && hasLine('/etc/apache2/apache.conf', 'IncludeOptional sites-enabled/', 1) == false) {
					replaceLine('/etc/apache2/apache.conf', 'Include sites-enabled/', 'Include sites-enabled/', 1, 1);
				} elseif(hasLine('/etc/apache2/apache.conf', 'IncludeOptional sites-enabled/*.vhost', 1) == false) {
					replaceLine('/etc/apache2/apache.conf', 'IncludeOptional sites-enabled/*.vhost', 'IncludeOptional sites-enabled/', 1, 1);
				}
			}
		}
		
		if(is_file('/etc/apache2/apache2.conf')) {
			if(hasLine('/etc/apache2/apache2.conf', 'Include sites-enabled/', 1) == false && hasLine('/etc/apache2/apache2.conf', 'IncludeOptional sites-enabled/', 1) == false) {
				if(hasLine('/etc/apache2/apache2.conf', 'Include sites-enabled/*.conf', 1) == true) {
					replaceLine('/etc/apache2/apache2.conf', 'Include sites-enabled/*.conf', 'Include sites-enabled/', 1, 1);
				} elseif(hasLine('/etc/apache2/apache2.conf', 'IncludeOptional sites-enabled/*.conf', 1) == true) {
					replaceLine('/etc/apache2/apache2.conf', 'IncludeOptional sites-enabled/*.conf', 'IncludeOptional sites-enabled/', 1, 1);
				}
			}
		}

		//* Copy the ISPConfig configuration include
		$vhost_conf_dir = $conf['apache']['vhost_conf_dir'];
		$vhost_conf_enabled_dir = $conf['apache']['vhost_conf_enabled_dir'];

		$tpl = new tpl('apache_ispconfig.conf.master');
		$tpl->setVar('apache_version',getapacheversion());
		
		if($this->is_update == true) {
			$tpl->setVar('logging',get_logging_state());
		} else {
			$tpl->setVar('logging','yes');
		}
		
		$records = $this->db->queryAllRecords("SELECT * FROM ?? WHERE server_id = ? AND virtualhost = 'y'", $conf['mysql']['master_database'] . '.server_ip', $conf['server_id']);
		$ip_addresses = array();
		
		if(is_array($records) && count($records) > 0) {
			foreach($records as $rec) {
				if($rec['ip_type'] == 'IPv6') {
					$ip_address = '['.$rec['ip_address'].']';
				} else {
					$ip_address = $rec['ip_address'];
				}
				$ports = explode(',', $rec['virtualhost_port']);
				if(is_array($ports)) {
					foreach($ports as $port) {
						$port = intval($port);
						if($port > 0 && $port < 65536 && $ip_address != '') {
							$ip_addresses[] = array('ip_address' => $ip_address, 'port' => $port);
						}
					}
				}
			}
		}
		
		if(count($ip_addresses) > 0) $tpl->setLoop('ip_adresses',$ip_addresses);
		
		wf($vhost_conf_dir.'/ispconfig.conf', $tpl->grab());
		unset($tpl);

		if(!@is_link($vhost_conf_enabled_dir.'/000-ispconfig.conf')) {
			symlink($vhost_conf_dir.'/ispconfig.conf', $vhost_conf_enabled_dir.'/000-ispconfig.conf');
		}

		//* make sure that webalizer finds its config file when it is directly in /etc
		if(@is_file('/etc/webalizer.conf') && !@is_dir('/etc/webalizer')) {
			mkdir('/etc/webalizer');
			symlink('/etc/webalizer.conf', '/etc/webalizer/webalizer.conf');
		}

		if(is_file('/etc/webalizer/webalizer.conf')) {
			// Change webalizer mode to incremental
			replaceLine('/etc/webalizer/webalizer.conf', '#IncrementalName', 'IncrementalName webalizer.current', 0, 0);
			replaceLine('/etc/webalizer/webalizer.conf', '#Incremental', 'Incremental     yes', 0, 0);
			replaceLine('/etc/webalizer/webalizer.conf', '#HistoryName', 'HistoryName     webalizer.hist', 0, 0);
		}

		// Check the awsatst script
		if(!is_dir('/usr/share/awstats/tools')) exec('mkdir -p /usr/share/awstats/tools');
		if(!file_exists('/usr/share/awstats/tools/awstats_buildstaticpages.pl') && file_exists('/usr/share/doc/awstats/examples/awstats_buildstaticpages.pl')) symlink('/usr/share/doc/awstats/examples/awstats_buildstaticpages.pl', '/usr/share/awstats/tools/awstats_buildstaticpages.pl');
		if(file_exists('/etc/awstats/awstats.conf.local')) replaceLine('/etc/awstats/awstats.conf.local', 'LogFormat=4', 'LogFormat=1', 0, 1);

		//* add a sshusers group
		$command = 'groupadd sshusers';
		if(!is_group('sshusers')) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

	}

	public function configure_nginx(){
		global $conf;

		if($conf['nginx']['installed'] == false) return;
		//* Create the logging directory for the vhost logfiles
		if(!@is_dir($conf['ispconfig_log_dir'].'/httpd')) mkdir($conf['ispconfig_log_dir'].'/httpd', 0755, true);

		//* make sure that webalizer finds its config file when it is directly in /etc
		if(@is_file('/etc/webalizer.conf') && !@is_dir('/etc/webalizer')) {
			mkdir('/etc/webalizer');
			symlink('/etc/webalizer.conf', '/etc/webalizer/webalizer.conf');
		}

		if(is_file('/etc/webalizer/webalizer.conf')) {
			// Change webalizer mode to incremental
			replaceLine('/etc/webalizer/webalizer.conf', '#IncrementalName', 'IncrementalName webalizer.current', 0, 0);
			replaceLine('/etc/webalizer/webalizer.conf', '#Incremental', 'Incremental     yes', 0, 0);
			replaceLine('/etc/webalizer/webalizer.conf', '#HistoryName', 'HistoryName     webalizer.hist', 0, 0);
		}

		// Check the awsatst script
		if(!is_dir('/usr/share/awstats/tools')) exec('mkdir -p /usr/share/awstats/tools');
		if(!file_exists('/usr/share/awstats/tools/awstats_buildstaticpages.pl') && file_exists('/usr/share/doc/awstats/examples/awstats_buildstaticpages.pl')) symlink('/usr/share/doc/awstats/examples/awstats_buildstaticpages.pl', '/usr/share/awstats/tools/awstats_buildstaticpages.pl');
		if(file_exists('/etc/awstats/awstats.conf.local')) replaceLine('/etc/awstats/awstats.conf.local', 'LogFormat=4', 'LogFormat=1', 0, 1);

		//* add a sshusers group
		$command = 'groupadd sshusers';
		if(!is_group('sshusers')) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		
		// add anonymized log option to nginxx.conf file
		$nginx_conf_file = $conf['nginx']['config_dir'].'/nginx.conf';
		if(is_file($nginx_conf_file)) {
			$tmp = file_get_contents($nginx_conf_file);
			if(!stristr($tmp, 'log_format anonymized')) {
				copy($nginx_conf_file,$nginx_conf_file.'~');
				replaceLine($nginx_conf_file, 'http {', "http {\n\n".file_get_contents('tpl/nginx_anonlog.master'), 0, 0);
			}
		}
		
	}

	public function configure_fail2ban() {
		// To Do
	}

	public function configure_squid()
	{
		global $conf;
		$row = $this->db->queryOneRecord("SELECT server_name FROM server WHERE server_id = ?", $conf["server_id"]);
		$ip_address = gethostbyname($row["server_name"]);
		$server_name = $row["server_name"];

		$configfile = 'squid.conf';
		if(is_file($conf["squid"]["config_dir"].'/'.$configfile)) copy($conf["squid"]["config_dir"].'/'.$configfile, $conf["squid"]["config_dir"].'/'.$configfile.'~');
		if(is_file($conf["squid"]["config_dir"].'/'.$configfile.'~')) exec('chmod 400 '.$conf["squid"]["config_dir"].'/'.$configfile.'~');
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', "tpl/".$configfile.".master");
		$content = str_replace('{server_name}', $server_name, $content);
		$content = str_replace('{ip_address}', $ip_address, $content);
		$content = str_replace('{config_dir}', $conf['squid']['config_dir'], $content);
		wf($conf["squid"]["config_dir"].'/'.$configfile, $content);
		exec('chmod 600 '.$conf["squid"]["config_dir"].'/'.$configfile);
		exec('chown root:root '.$conf["squid"]["config_dir"].'/'.$configfile);
	}

	public function configure_ufw_firewall()
	{
		if($this->is_update == false) {
			$configfile = 'ufw.conf';
			if(is_file('/etc/ufw/ufw.conf')) copy('/etc/ufw/ufw.conf', '/etc/ufw/ufw.conf~');
			$content = rf("tpl/".$configfile.".master");
			wf('/etc/ufw/ufw.conf', $content);
			exec('chmod 600 /etc/ufw/ufw.conf');
			exec('chown root:root /etc/ufw/ufw.conf');
		}
	}

	public function configure_bastille_firewall() {
		global $conf;

		$dist_init_scripts = $conf['init_scripts'];

		if(is_dir('/etc/Bastille.backup')) caselog('rm -rf /etc/Bastille.backup', __FILE__, __LINE__);
		if(is_dir('/etc/Bastille')) caselog('mv -f /etc/Bastille /etc/Bastille.backup', __FILE__, __LINE__);
		@mkdir('/etc/Bastille', 0700);
		if(is_dir('/etc/Bastille.backup/firewall.d')) caselog('cp -pfr /etc/Bastille.backup/firewall.d /etc/Bastille/', __FILE__, __LINE__);
		if(is_file($conf['ispconfig_install_dir'].'/server/conf-custom/install/bastille-firewall.cfg.master')) {
			caselog('cp -f ' . $conf['ispconfig_install_dir'].'/server/conf-custom/install/bastille-firewall.cfg.master /etc/Bastille/bastille-firewall.cfg', __FILE__, __LINE__);
		} else {
			caselog('cp -f tpl/bastille-firewall.cfg.master /etc/Bastille/bastille-firewall.cfg', __FILE__, __LINE__);
		}
		caselog('chmod 644 /etc/Bastille/bastille-firewall.cfg', __FILE__, __LINE__);
		$content = rf('/etc/Bastille/bastille-firewall.cfg');
		$content = str_replace('{DNS_SERVERS}', '', $content);

		$tcp_public_services = '';
		$udp_public_services = '';

		$row = $this->db->queryOneRecord('SELECT * FROM ?? WHERE server_id = ?', $conf["mysql"]["database"] . '.firewall', $conf['server_id']);

		if(trim($row['tcp_port']) != '' || trim($row['udp_port']) != '') {
			$tcp_public_services = trim(str_replace(',', ' ', $row['tcp_port']));
			$udp_public_services = trim(str_replace(',', ' ', $row['udp_port']));
		} else {
			$tcp_public_services = '21 22 25 53 80 110 143 443 3306 8080 10000';
			$udp_public_services = '53';
		}

		if(!stristr($tcp_public_services, $conf['apache']['vhost_port'])) {
			$tcp_public_services .= ' '.intval($conf['apache']['vhost_port']);
			if($row['tcp_port'] != '') $this->db->query("UPDATE firewall SET tcp_port = tcp_port + ? WHERE server_id = ?", ',' . intval($conf['apache']['vhost_port']), $conf['server_id']);
		}

		$content = str_replace('{TCP_PUBLIC_SERVICES}', $tcp_public_services, $content);
		$content = str_replace('{UDP_PUBLIC_SERVICES}', $udp_public_services, $content);

		wf('/etc/Bastille/bastille-firewall.cfg', $content);

		if(is_file($dist_init_scripts.'/bastille-firewall')) caselog('mv -f '.$dist_init_scripts.'/bastille-firewall '.$dist_init_scripts.'/bastille-firewall.backup', __FILE__, __LINE__);
		caselog('cp -f apps/bastille-firewall '.$dist_init_scripts, __FILE__, __LINE__);
		caselog('chmod 700 '.$dist_init_scripts.'/bastille-firewall', __FILE__, __LINE__);

		if(is_file('/sbin/bastille-ipchains')) caselog('mv -f /sbin/bastille-ipchains /sbin/bastille-ipchains.backup', __FILE__, __LINE__);
		caselog('cp -f apps/bastille-ipchains /sbin', __FILE__, __LINE__);
		caselog('chmod 700 /sbin/bastille-ipchains', __FILE__, __LINE__);

		if(is_file('/sbin/bastille-netfilter')) caselog('mv -f /sbin/bastille-netfilter /sbin/bastille-netfilter.backup', __FILE__, __LINE__);
		caselog('cp -f apps/bastille-netfilter /sbin', __FILE__, __LINE__);
		caselog('chmod 700 /sbin/bastille-netfilter', __FILE__, __LINE__);

		if(!@is_dir('/var/lock/subsys')) caselog('mkdir /var/lock/subsys', __FILE__, __LINE__);

		exec('which ipchains &> /dev/null', $ipchains_location, $ret_val);
		if(!is_file('/sbin/ipchains') && !is_link('/sbin/ipchains') && $ret_val == 0) phpcaselog(@symlink(shell_exec('which ipchains'), '/sbin/ipchains'), 'create symlink', __FILE__, __LINE__);
		unset($ipchains_location);
		exec('which iptables &> /dev/null', $iptables_location, $ret_val);
		if(!is_file('/sbin/iptables') && !is_link('/sbin/iptables') && $ret_val == 0) phpcaselog(@symlink(trim(shell_exec('which iptables')), '/sbin/iptables'), 'create symlink', __FILE__, __LINE__);
		unset($iptables_location);

	}

	public function configure_vlogger() {
		global $conf;

		//** Configure vlogger to use traffic logging to mysql (master) db
		$configfile = 'vlogger-dbi.conf';
		if(is_file($conf['vlogger']['config_dir'].'/'.$configfile)) copy($conf['vlogger']['config_dir'].'/'.$configfile, $conf['vlogger']['config_dir'].'/'.$configfile.'~');
		if(is_file($conf['vlogger']['config_dir'].'/'.$configfile.'~')) chmod($conf['vlogger']['config_dir'].'/'.$configfile.'~', 0400);
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		if($conf['mysql']['master_slave_setup'] == 'y') {
			$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['master_ispconfig_user'], $content);
			$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['master_ispconfig_password'], $content);
			$content = str_replace('{mysql_server_database}', $conf['mysql']['master_database'], $content);
			$content = str_replace('{mysql_server_ip}', $conf['mysql']['master_host'], $content);
		} else {
			$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
			$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
			$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
			$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
		}
		wf($conf['vlogger']['config_dir'].'/'.$configfile, $content);
		chmod($conf['vlogger']['config_dir'].'/'.$configfile, 0600);
		chown($conf['vlogger']['config_dir'].'/'.$configfile, 'root');
		chgrp($conf['vlogger']['config_dir'].'/'.$configfile, 'root');

	}

	public function configure_apps_vhost() {
		global $conf;

		//* Create the ispconfig apps vhost user and group
		if($conf['apache']['installed'] == true){
			$apps_vhost_user = escapeshellcmd($conf['web']['apps_vhost_user']);
			$apps_vhost_group = escapeshellcmd($conf['web']['apps_vhost_group']);
			$install_dir = escapeshellcmd($conf['web']['website_basedir'].'/apps');

			$command = 'groupadd '.$apps_vhost_user;
			if(!is_group($apps_vhost_group)) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

			$command = 'useradd -g '.$apps_vhost_group.' -d '.$install_dir.' '.$apps_vhost_group;
			if(!is_user($apps_vhost_user)) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");


			//$command = 'adduser '.$conf['apache']['user'].' '.$apps_vhost_group;
			$command = 'usermod -a -G '.$apps_vhost_group.' '.$conf['apache']['user'];
			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

			if(!@is_dir($install_dir)){
				mkdir($install_dir, 0755, true);
			} else {
				chmod($install_dir, 0755);
			}
			chown($install_dir, $apps_vhost_user);
			chgrp($install_dir, $apps_vhost_group);

			//* Copy the apps vhost file
			$vhost_conf_dir = $conf['apache']['vhost_conf_dir'];
			$vhost_conf_enabled_dir = $conf['apache']['vhost_conf_enabled_dir'];
			$apps_vhost_servername = ($conf['web']['apps_vhost_servername'] == '')?'':'ServerName '.$conf['web']['apps_vhost_servername'];
			
			//* Get the apps vhost port
			if($this->is_update == true) {
				$conf['web']['apps_vhost_port'] = get_apps_vhost_port_number();
			}

			// Dont just copy over the virtualhost template but add some custom settings
			$tpl = new tpl('apache_apps.vhost.master');
			$tpl->setVar('apps_vhost_ip',$conf['web']['apps_vhost_ip']);
			$tpl->setVar('apps_vhost_port',$conf['web']['apps_vhost_port']);
			$tpl->setVar('apps_vhost_dir',$conf['web']['website_basedir'].'/apps');
			$tpl->setVar('apps_vhost_basedir',$conf['web']['website_basedir']);
			$tpl->setVar('apps_vhost_servername',$apps_vhost_servername);
			$tpl->setVar('apache_version',getapacheversion());
			if($this->is_update == true) {
				$tpl->setVar('logging',get_logging_state());
			} else {
				$tpl->setVar('logging','yes');
			}

			if($conf['rspamd']['installed'] == true) {
				$tpl->setVar('use_rspamd', 'yes');
			}
			
			// comment out the listen directive if port is 80 or 443
			if($conf['web']['apps_vhost_ip'] == 80 or $conf['web']['apps_vhost_ip'] == 443) {
				$tpl->setVar('vhost_port_listen','#');
			} else {
				$tpl->setVar('vhost_port_listen','');
			}

			wf($vhost_conf_dir.'/apps.vhost', $tpl->grab());
			unset($tpl);

			//copy('tpl/apache_ispconfig.vhost.master', "$vhost_conf_dir/ispconfig.vhost");
			//* and create the symlink
			if(@is_link($vhost_conf_enabled_dir.'/apps.vhost')) unlink($vhost_conf_enabled_dir.'/apps.vhost');
			if(!@is_link($vhost_conf_enabled_dir.'/000-apps.vhost') && @is_file($vhost_conf_dir.'/apps.vhost')) {
				@symlink($vhost_conf_dir.'/apps.vhost', $vhost_conf_enabled_dir.'/000-apps.vhost');
			}

			if(!is_file($conf['web']['website_basedir'].'/php-fcgi-scripts/apps/.php-fcgi-starter')) {
				$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/apache_apps_fcgi_starter.master', 'tpl/apache_apps_fcgi_starter.master');
				$content = str_replace('{fastcgi_bin}', $conf['fastcgi']['fastcgi_bin'], $content);
				$content = str_replace('{fastcgi_phpini_path}', $conf['fastcgi']['fastcgi_phpini_path'], $content);
				mkdir($conf['web']['website_basedir'].'/php-fcgi-scripts/apps', 0755, true);
				//copy('tpl/apache_apps_fcgi_starter.master',$conf['web']['website_basedir'].'/php-fcgi-scripts/apps/.php-fcgi-starter');
				wf($conf['web']['website_basedir'].'/php-fcgi-scripts/apps/.php-fcgi-starter', $content);
				exec('chmod +x '.$conf['web']['website_basedir'].'/php-fcgi-scripts/apps/.php-fcgi-starter');
				exec('chown -R ispapps:ispapps '.$conf['web']['website_basedir'].'/php-fcgi-scripts/apps');

			}
		}
		if($conf['nginx']['installed'] == true){
			$apps_vhost_user = escapeshellcmd($conf['web']['apps_vhost_user']);
			$apps_vhost_group = escapeshellcmd($conf['web']['apps_vhost_group']);
			$install_dir = escapeshellcmd($conf['web']['website_basedir'].'/apps');

			$command = 'groupadd '.$apps_vhost_user;
			if(!is_group($apps_vhost_group)) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

			$command = 'useradd -g '.$apps_vhost_group.' -d '.$install_dir.' '.$apps_vhost_group;
			if(!is_user($apps_vhost_user)) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");


			//$command = 'adduser '.$conf['nginx']['user'].' '.$apps_vhost_group;
			$command = 'usermod -a -G '.$apps_vhost_group.' '.$conf['nginx']['user'];
			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

			if(!@is_dir($install_dir)){
				mkdir($install_dir, 0755, true);
			} else {
				chmod($install_dir, 0755);
			}
			chown($install_dir, $apps_vhost_user);
			chgrp($install_dir, $apps_vhost_group);

			//* Copy the apps vhost file
			$vhost_conf_dir = $conf['nginx']['vhost_conf_dir'];
			$vhost_conf_enabled_dir = $conf['nginx']['vhost_conf_enabled_dir'];
			$apps_vhost_servername = ($conf['web']['apps_vhost_servername'] == '')?'_':$conf['web']['apps_vhost_servername'];

			// Dont just copy over the virtualhost template but add some custom settings
			$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/nginx_apps.vhost.master', 'tpl/nginx_apps.vhost.master');

			if($conf['web']['apps_vhost_ip'] == '_default_'){
				$apps_vhost_ip = '';
			} else {
				$apps_vhost_ip = $conf['web']['apps_vhost_ip'].':';
			}

			if($conf['rspamd']['installed'] == true) {
				$content = str_replace('{use_rspamd}', '', $content);
			} else {
				$content = str_replace('{use_rspamd}', '# ', $content);
			}
			
			$socket_dir = escapeshellcmd($conf['nginx']['php_fpm_socket_dir']);
			if(substr($socket_dir, -1) != '/') $socket_dir .= '/';
			if(!is_dir($socket_dir)) exec('mkdir -p '.$socket_dir);
			$fpm_socket = $socket_dir.'apps.sock';
			$cgi_socket = escapeshellcmd($conf['nginx']['cgi_socket']);

			$content = str_replace('{apps_vhost_ip}', $apps_vhost_ip, $content);
			$content = str_replace('{apps_vhost_port}', $conf['web']['apps_vhost_port'], $content);
			$content = str_replace('{apps_vhost_dir}', $conf['web']['website_basedir'].'/apps', $content);
			$content = str_replace('{apps_vhost_servername}', $apps_vhost_servername, $content);
			//$content = str_replace('{fpm_port}', ($conf['nginx']['php_fpm_start_port']+1), $content);
			$content = str_replace('{fpm_socket}', $fpm_socket, $content);
			$content = str_replace('{cgi_socket}', $cgi_socket, $content);

			if(	file_exists('/var/run/php5-fpm.sock')
				|| file_exists('/var/run/php/php7.0-fpm.sock')
				|| file_exists('/var/run/php/php7.1-fpm.sock')
				|| file_exists('/var/run/php/php7.2-fpm.sock')
				|| file_exists('/var/run/php/php7.3-fpm.sock')
				|| file_exists('/var/run/php/php7.4-fpm.sock')
			){
				$use_tcp = '#';
				$use_socket = '';
			} else {
				$use_tcp = '';
				$use_socket = '#';
			}
			$content = str_replace('{use_tcp}', $use_tcp, $content);
			$content = str_replace('{use_socket}', $use_socket, $content);
			
			// SSL in apps vhost is off by default. Might change later.
			$content = str_replace('{ssl_on}', '', $content);
			$content = str_replace('{ssl_comment}', '#', $content);
			
			// Fix socket path on PHP 7 systems
			if(file_exists('/var/run/php/php7.0-fpm.sock'))	$content = str_replace('/var/run/php5-fpm.sock', '/var/run/php/php7.0-fpm.sock', $content);
			if(file_exists('/var/run/php/php7.1-fpm.sock'))	$content = str_replace('/var/run/php5-fpm.sock', '/var/run/php/php7.1-fpm.sock', $content);
			if(file_exists('/var/run/php/php7.2-fpm.sock'))	$content = str_replace('/var/run/php5-fpm.sock', '/var/run/php/php7.2-fpm.sock', $content);
			if(file_exists('/var/run/php/php7.3-fpm.sock'))	$content = str_replace('/var/run/php5-fpm.sock', '/var/run/php/php7.3-fpm.sock', $content);
			if(file_exists('/var/run/php/php7.4-fpm.sock'))	$content = str_replace('/var/run/php5-fpm.sock', '/var/run/php/php7.4-fpm.sock', $content);

			wf($vhost_conf_dir.'/apps.vhost', $content);

			// PHP-FPM
			// Dont just copy over the php-fpm pool template but add some custom settings
			$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/apps_php_fpm_pool.conf.master', 'tpl/apps_php_fpm_pool.conf.master');
			$content = str_replace('{fpm_pool}', 'apps', $content);
			//$content = str_replace('{fpm_port}', ($conf['nginx']['php_fpm_start_port']+1), $content);
			$content = str_replace('{fpm_socket}', $fpm_socket, $content);
			$content = str_replace('{fpm_user}', $apps_vhost_user, $content);
			$content = str_replace('{fpm_group}', $apps_vhost_group, $content);
			wf($conf['nginx']['php_fpm_pool_dir'].'/apps.conf', $content);

			//copy('tpl/nginx_ispconfig.vhost.master', "$vhost_conf_dir/ispconfig.vhost");
			//* and create the symlink
			if(@is_link($vhost_conf_enabled_dir.'/apps.vhost')) unlink($vhost_conf_enabled_dir.'/apps.vhost');
			if(!@is_link($vhost_conf_enabled_dir.'/000-apps.vhost')) {
				symlink($vhost_conf_dir.'/apps.vhost', $vhost_conf_enabled_dir.'/000-apps.vhost');
			}

		}
	}

	public function make_ispconfig_ssl_cert() {
		global $conf,$autoinstall;

		$install_dir = $conf['ispconfig_install_dir'];

		$ssl_crt_file = $install_dir.'/interface/ssl/ispserver.crt';
		$ssl_csr_file = $install_dir.'/interface/ssl/ispserver.csr';
		$ssl_key_file = $install_dir.'/interface/ssl/ispserver.key';

		if(!@is_dir($install_dir.'/interface/ssl')) mkdir($install_dir.'/interface/ssl', 0755, true);

		$ssl_pw = substr(md5(mt_rand()), 0, 6);
		exec("openssl genrsa -des3 -passout pass:$ssl_pw -out $ssl_key_file 4096");
		if(AUTOINSTALL){
			exec("openssl req -new -passin pass:$ssl_pw -passout pass:$ssl_pw -subj '/C=".escapeshellcmd($autoinstall['ssl_cert_country'])."/ST=".escapeshellcmd($autoinstall['ssl_cert_state'])."/L=".escapeshellcmd($autoinstall['ssl_cert_locality'])."/O=".escapeshellcmd($autoinstall['ssl_cert_organisation'])."/OU=".escapeshellcmd($autoinstall['ssl_cert_organisation_unit'])."/CN=".escapeshellcmd($autoinstall['ssl_cert_common_name'])."' -key $ssl_key_file -out $ssl_csr_file");
		} else {
			exec("openssl req -new -passin pass:$ssl_pw -passout pass:$ssl_pw -key $ssl_key_file -out $ssl_csr_file");
		}
		exec("openssl req -x509 -passin pass:$ssl_pw -passout pass:$ssl_pw -key $ssl_key_file -in $ssl_csr_file -out $ssl_crt_file -days 3650");
		exec("openssl rsa -passin pass:$ssl_pw -in $ssl_key_file -out $ssl_key_file.insecure");
		rename($ssl_key_file, $ssl_key_file.'.secure');
		rename($ssl_key_file.'.insecure', $ssl_key_file);
		
		exec('chown -R root:root /usr/local/ispconfig/interface/ssl');

	}

	public function install_ispconfig() {
		global $conf;

		$install_dir = $conf['ispconfig_install_dir'];

		//* Create the ISPConfig installation directory
		if(!@is_dir($install_dir)) {
			$command = "mkdir $install_dir";
			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		}

		//* Create a ISPConfig user and group
		$command = 'groupadd ispconfig';
		if(!is_group('ispconfig')) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		$command = 'useradd -g ispconfig -d '.$install_dir.' ispconfig';
		if(!is_user('ispconfig')) caselog($command.' &> /dev/null 2> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* copy the ISPConfig interface part
		$command = 'cp -rf ../interface '.$install_dir;
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* copy the ISPConfig server part
		$command = 'cp -rf ../server '.$install_dir;
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		
		//* Make a backup of the security settings
		if(is_file('/usr/local/ispconfig/security/security_settings.ini')) copy('/usr/local/ispconfig/security/security_settings.ini','/usr/local/ispconfig/security/security_settings.ini~');
		
		//* copy the ISPConfig security part
		$command = 'cp -rf ../security '.$install_dir;
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
	
		$configfile = 'security_settings.ini';
		if(is_file($install_dir.'/security/'.$configfile)) {
			copy($install_dir.'/security/'.$configfile, $install_dir.'/security/'.$configfile.'~');
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		wf($install_dir.'/security/'.$configfile, $content);	

		//* Create a symlink, so ISPConfig is accessible via web
		// Replaced by a separate vhost definition for port 8080
		// $command = "ln -s $install_dir/interface/web/ /var/www/ispconfig";
		// caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* Create the config file for ISPConfig interface
		$configfile = 'config.inc.php';
		if(is_file($install_dir.'/interface/lib/'.$configfile)) {
			copy($install_dir.'/interface/lib/'.$configfile, $install_dir.'/interface/lib/'.$configfile.'~');
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_host}', $conf['mysql']['host'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);

		$content = str_replace('{mysql_master_server_ispconfig_user}', $conf['mysql']['master_ispconfig_user'], $content);
		$content = str_replace('{mysql_master_server_ispconfig_password}', $conf['mysql']['master_ispconfig_password'], $content);
		$content = str_replace('{mysql_master_server_database}', $conf['mysql']['master_database'], $content);
		$content = str_replace('{mysql_master_server_host}', $conf['mysql']['master_host'], $content);
		$content = str_replace('{mysql_master_server_port}', $conf['mysql']['master_port'], $content);

		$content = str_replace('{server_id}', $conf['server_id'], $content);
		$content = str_replace('{ispconfig_log_priority}', $conf['ispconfig_log_priority'], $content);
		$content = str_replace('{language}', $conf['language'], $content);
		$content = str_replace('{timezone}', $conf['timezone'], $content);
		$content = str_replace('{theme}', $conf['theme'], $content);
		$content = str_replace('{language_file_import_enabled}', ($conf['language_file_import_enabled'] == true)?'true':'false', $content);

		wf($install_dir.'/interface/lib/'.$configfile, $content);

		//* Create the config file for ISPConfig server
		$configfile = 'config.inc.php';
		if(is_file($install_dir.'/server/lib/'.$configfile)) {
			copy($install_dir.'/server/lib/'.$configfile, $install_dir.'/interface/lib/'.$configfile.'~');
		}
		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
		$content = str_replace('{mysql_server_database}', $conf['mysql']['database'], $content);
		$content = str_replace('{mysql_server_host}', $conf['mysql']['host'], $content);
		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);

		$content = str_replace('{mysql_master_server_ispconfig_user}', $conf['mysql']['master_ispconfig_user'], $content);
		$content = str_replace('{mysql_master_server_ispconfig_password}', $conf['mysql']['master_ispconfig_password'], $content);
		$content = str_replace('{mysql_master_server_database}', $conf['mysql']['master_database'], $content);
		$content = str_replace('{mysql_master_server_host}', $conf['mysql']['master_host'], $content);
		$content = str_replace('{mysql_master_server_port}', $conf['mysql']['master_port'], $content);

		$content = str_replace('{server_id}', $conf['server_id'], $content);
		$content = str_replace('{ispconfig_log_priority}', $conf['ispconfig_log_priority'], $content);
		$content = str_replace('{language}', $conf['language'], $content);
		$content = str_replace('{timezone}', $conf['timezone'], $content);
		$content = str_replace('{theme}', $conf['theme'], $content);
		$content = str_replace('{language_file_import_enabled}', ($conf['language_file_import_enabled'] == true)?'true':'false', $content);

		wf($install_dir.'/server/lib/'.$configfile, $content);

		//* Create the config file for remote-actions (but only, if it does not exist, because
		//  the value is a autoinc-value and so changed by the remoteaction_core_module
		if (!file_exists($install_dir.'/server/lib/remote_action.inc.php')) {
			$content = '<?php' . "\n" . '$maxid_remote_action = 0;' . "\n" . '?>';
			wf($install_dir.'/server/lib/remote_action.inc.php', $content);
		}

		//* Enable the server modules and plugins.
		// TODO: Implement a selector which modules and plugins shall be enabled.
		$dir = $install_dir.'/server/mods-available/';
		if (is_dir($dir)) {
			if ($dh = opendir($dir)) {
				while (($file = readdir($dh)) !== false) {
					if($file != '.' && $file != '..' && substr($file, -8, 8) == '.inc.php') {
						include_once $install_dir.'/server/mods-available/'.$file;
						$module_name = substr($file, 0, -8);
						$tmp = new $module_name;
						if($tmp->onInstall()) {
							if(!@is_link($install_dir.'/server/mods-enabled/'.$file)) {
								@symlink($install_dir.'/server/mods-available/'.$file, $install_dir.'/server/mods-enabled/'.$file);
								// @symlink($install_dir.'/server/mods-available/'.$file, '../mods-enabled/'.$file);
							}
							if (strpos($file, '_core_module') !== false) {
								if(!@is_link($install_dir.'/server/mods-core/'.$file)) {
									@symlink($install_dir.'/server/mods-available/'.$file, $install_dir.'/server/mods-core/'.$file);
									// @symlink($install_dir.'/server/mods-available/'.$file, '../mods-core/'.$file);
								}
							}
						}
						unset($tmp);
					}
				}
				closedir($dh);
			}
		}

		$dir = $install_dir.'/server/plugins-available/';
		if (is_dir($dir)) {
			if ($dh = opendir($dir)) {
				while (($file = readdir($dh)) !== false) {
					if($conf['apache']['installed'] == true && $file == 'nginx_plugin.inc.php') continue;
					if($conf['nginx']['installed'] == true && $file == 'apache2_plugin.inc.php') continue;
					if($file != '.' && $file != '..' && substr($file, -8, 8) == '.inc.php') {
						include_once $install_dir.'/server/plugins-available/'.$file;
						$plugin_name = substr($file, 0, -8);
						$tmp = new $plugin_name;
						if(method_exists($tmp, 'onInstall') && $tmp->onInstall()) {
							if(!@is_link($install_dir.'/server/plugins-enabled/'.$file)) {
								@symlink($install_dir.'/server/plugins-available/'.$file, $install_dir.'/server/plugins-enabled/'.$file);
								//@symlink($install_dir.'/server/plugins-available/'.$file, '../plugins-enabled/'.$file);
							}
							if (strpos($file, '_core_plugin') !== false) {
								if(!@is_link($install_dir.'/server/plugins-core/'.$file)) {
									@symlink($install_dir.'/server/plugins-available/'.$file, $install_dir.'/server/plugins-core/'.$file);
									//@symlink($install_dir.'/server/plugins-available/'.$file, '../plugins-core/'.$file);
								}
							}
						}
						unset($tmp);
					}
				}
				closedir($dh);
			}
		}

		// Update the server config
		$mail_server_enabled = ($conf['services']['mail'])?1:0;
		$web_server_enabled = ($conf['services']['web'])?1:0;
		$dns_server_enabled = ($conf['services']['dns'])?1:0;
		$file_server_enabled = ($conf['services']['file'])?1:0;
		$db_server_enabled = ($conf['services']['db'])?1:0;
		$vserver_server_enabled = ($conf['openvz']['installed'])?1:0;
		$proxy_server_enabled = ($conf['services']['proxy'])?1:0;
		$firewall_server_enabled = ($conf['services']['firewall'])?1:0;
		$xmpp_server_enabled = ($conf['services']['xmpp'])?1:0;

		$sql = "UPDATE `server` SET mail_server = '$mail_server_enabled', web_server = '$web_server_enabled', dns_server = '$dns_server_enabled', file_server = '$file_server_enabled', db_server = '$db_server_enabled', vserver_server = '$vserver_server_enabled', proxy_server = '$proxy_server_enabled', firewall_server = '$firewall_server_enabled', xmpp_server = '$xmpp_server_enabled' WHERE server_id = ?";

		$this->db->query($sql, $conf['server_id']);
		if($conf['mysql']['master_slave_setup'] == 'y') {
			$this->dbmaster->query($sql, $conf['server_id']);
		}


		// chown install dir to root and chmod 755
		$command = 'chown root:root '.$install_dir;
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		$command = 'chmod 755 '.$install_dir;
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* Chmod the files and directories in the install dir
		$command = 'chmod -R 750 '.$install_dir.'/*';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* chown the interface files to the ispconfig user and group
		$command = 'chown -R ispconfig:ispconfig '.$install_dir.'/interface';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		//* Chmod the files and directories in the acme dir
		$command = 'chmod -R 755 '.$install_dir.'/interface/acme';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		
		//* chown the server files to the root user and group
		$command = 'chown -R root:root '.$install_dir.'/server';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		
		//* chown the security files to the root user and group
		$command = 'chown -R root:root '.$install_dir.'/security';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		
		//* chown the security directory and security_settings.ini to root:ispconfig
		$command = 'chown root:ispconfig '.$install_dir.'/security/security_settings.ini';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		$command = 'chown root:ispconfig '.$install_dir.'/security';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		$command = 'chown root:ispconfig '.$install_dir.'/security/ids.whitelist';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		$command = 'chown root:ispconfig '.$install_dir.'/security/ids.htmlfield';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		$command = 'chown root:ispconfig '.$install_dir.'/security/apache_directives.blacklist';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		$command = 'chown root:ispconfig '.$install_dir.'/security/nginx_directives.blacklist';
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		
		//* Make the global language file directory group writable
		exec("chmod -R 770 $install_dir/interface/lib/lang");

		//* Make the temp directory for language file exports writable
		if(is_dir($install_dir.'/interface/web/temp')) exec("chmod -R 770 $install_dir/interface/web/temp");

		//* Make all interface language file directories group writable
		$handle = @opendir($install_dir.'/interface/web');
		while ($file = @readdir($handle)) {
			if ($file != '.' && $file != '..') {
				if(@is_dir($install_dir.'/interface/web'.'/'.$file.'/lib/lang')) {
					$handle2 = opendir($install_dir.'/interface/web'.'/'.$file.'/lib/lang');
					chmod($install_dir.'/interface/web'.'/'.$file.'/lib/lang', 0770);
					while ($lang_file = @readdir($handle2)) {
						if ($lang_file != '.' && $lang_file != '..') {
							chmod($install_dir.'/interface/web'.'/'.$file.'/lib/lang/'.$lang_file, 0770);
						}
					}
				}
			}
		}

		//* Make the APS directories group writable
		exec("chmod -R 770 $install_dir/interface/web/sites/aps_meta_packages");
		exec("chmod -R 770 $install_dir/server/aps_packages");

		//* make sure that the server config file (not the interface one) is only readable by the root user
		chmod($install_dir.'/server/lib/config.inc.php', 0600);
		chown($install_dir.'/server/lib/config.inc.php', 'root');
		chgrp($install_dir.'/server/lib/config.inc.php', 'root');

		//* Make sure thet the interface config file is readable by user ispconfig only
		chmod($install_dir.'/interface/lib/config.inc.php', 0600);
		chown($install_dir.'/interface/lib/config.inc.php', 'ispconfig');
		chgrp($install_dir.'/interface/lib/config.inc.php', 'ispconfig');

		chmod($install_dir.'/server/lib/remote_action.inc.php', 0600);
		chown($install_dir.'/server/lib/remote_action.inc.php', 'root');
		chgrp($install_dir.'/server/lib/remote_action.inc.php', 'root');

		if(@is_file($install_dir.'/server/lib/mysql_clientdb.conf')) {
			chmod($install_dir.'/server/lib/mysql_clientdb.conf', 0600);
			chown($install_dir.'/server/lib/mysql_clientdb.conf', 'root');
			chgrp($install_dir.'/server/lib/mysql_clientdb.conf', 'root');
		}

		if(is_dir($install_dir.'/interface/invoices')) {
			exec('chmod -R 770 '.escapeshellarg($install_dir.'/interface/invoices'));
			exec('chown -R ispconfig:ispconfig '.escapeshellarg($install_dir.'/interface/invoices'));
		}
		
		exec('chown -R root:root /usr/local/ispconfig/interface/ssl');

		// TODO: FIXME: add the www-data user to the ispconfig group. This is just for testing
		// and must be fixed as this will allow the apache user to read the ispconfig files.
		// Later this must run as own apache server or via suexec!
		if($conf['apache']['installed'] == true){
			$command = 'adduser '.$conf['apache']['user'].' ispconfig';
			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
			if(is_group('ispapps')){
				$command = 'adduser '.$conf['apache']['user'].' ispapps';
				caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
			}
		}
		if($conf['nginx']['installed'] == true){
			$command = 'adduser '.$conf['nginx']['user'].' ispconfig';
			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
			if(is_group('ispapps')){
				$command = 'adduser '.$conf['nginx']['user'].' ispapps';
				caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
			}
		}

		//* Make the shell scripts executable
		$command = "chmod +x $install_dir/server/scripts/*.sh";
		caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");

		if ($this->install_ispconfig_interface == true && isset($conf['interface_password']) && $conf['interface_password']!='admin') {
			$sql = "UPDATE sys_user SET passwort = md5(?) WHERE username = 'admin';";
			$this->db->query($sql, $conf['interface_password']);
		}

		if($conf['apache']['installed'] == true && $this->install_ispconfig_interface == true){
			//* Copy the ISPConfig vhost for the controlpanel
			$vhost_conf_dir = $conf['apache']['vhost_conf_dir'];
			$vhost_conf_enabled_dir = $conf['apache']['vhost_conf_enabled_dir'];

			// Dont just copy over the virtualhost template but add some custom settings
			$tpl = new tpl('apache_ispconfig.vhost.master');
			$tpl->setVar('vhost_port',$conf['apache']['vhost_port']);

			// comment out the listen directive if port is 80 or 443
			if($conf['apache']['vhost_port'] == 80 or $conf['apache']['vhost_port'] == 443) {
				$tpl->setVar('vhost_port_listen','#');
			} else {
				$tpl->setVar('vhost_port_listen','');
			}

			if(is_file($install_dir.'/interface/ssl/ispserver.crt') && is_file($install_dir.'/interface/ssl/ispserver.key')) {
				$tpl->setVar('ssl_comment','');
			} else {
				$tpl->setVar('ssl_comment','#');
			}
			if(is_file($install_dir.'/interface/ssl/ispserver.crt') && is_file($install_dir.'/interface/ssl/ispserver.key') && is_file($install_dir.'/interface/ssl/ispserver.bundle')) {
				$tpl->setVar('ssl_bundle_comment','');
			} else {
				$tpl->setVar('ssl_bundle_comment','#');
			}
			
			$tpl->setVar('apache_version',getapacheversion());

			wf($vhost_conf_dir.'/ispconfig.vhost', $tpl->grab());

			//* and create the symlink
			if($this->is_update == false) {
				if(@is_link($vhost_conf_enabled_dir.'/ispconfig.vhost')) unlink($vhost_conf_enabled_dir.'/ispconfig.vhost');
				if(!@is_link($vhost_conf_enabled_dir.'/000-ispconfig.vhost')) {
					symlink($vhost_conf_dir.'/ispconfig.vhost', $vhost_conf_enabled_dir.'/000-ispconfig.vhost');
				}
			}
			//if(!is_file('/var/www/php-fcgi-scripts/ispconfig/.php-fcgi-starter')) {
			$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/apache_ispconfig_fcgi_starter.master', 'tpl/apache_ispconfig_fcgi_starter.master');
			$content = str_replace('{fastcgi_bin}', $conf['fastcgi']['fastcgi_bin'], $content);
			$content = str_replace('{fastcgi_phpini_path}', $conf['fastcgi']['fastcgi_phpini_path'], $content);
			@mkdir('/var/www/php-fcgi-scripts/ispconfig', 0755, true);
			wf('/var/www/php-fcgi-scripts/ispconfig/.php-fcgi-starter', $content);
			exec('chmod +x /var/www/php-fcgi-scripts/ispconfig/.php-fcgi-starter');
			@symlink($install_dir.'/interface/web', '/var/www/ispconfig');
			exec('chown -R ispconfig:ispconfig /var/www/php-fcgi-scripts/ispconfig');
			//}
		}

		if($conf['nginx']['installed'] == true && $this->install_ispconfig_interface == true){
			//* Copy the ISPConfig vhost for the controlpanel
			$vhost_conf_dir = $conf['nginx']['vhost_conf_dir'];
			$vhost_conf_enabled_dir = $conf['nginx']['vhost_conf_enabled_dir'];

			// Dont just copy over the virtualhost template but add some custom settings
			$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/nginx_ispconfig.vhost.master', 'tpl/nginx_ispconfig.vhost.master');
			$content = str_replace('{vhost_port}', $conf['nginx']['vhost_port'], $content);

			if(is_file($install_dir.'/interface/ssl/ispserver.crt') && is_file($install_dir.'/interface/ssl/ispserver.key')) {
				$content = str_replace('{ssl_on}', 'ssl', $content);
				$content = str_replace('{ssl_comment}', '', $content);
				$content = str_replace('{fastcgi_ssl}', 'on', $content);
			} else {
				$content = str_replace('{ssl_on}', '', $content);
				$content = str_replace('{ssl_comment}', '#', $content);
				$content = str_replace('{fastcgi_ssl}', 'off', $content);
			}

			$socket_dir = escapeshellcmd($conf['nginx']['php_fpm_socket_dir']);
			if(substr($socket_dir, -1) != '/') $socket_dir .= '/';
			if(!is_dir($socket_dir)) exec('mkdir -p '.$socket_dir);
			$fpm_socket = $socket_dir.'ispconfig.sock';

			//$content = str_replace('{fpm_port}', $conf['nginx']['php_fpm_start_port'], $content);
			$content = str_replace('{fpm_socket}', $fpm_socket, $content);

			wf($vhost_conf_dir.'/ispconfig.vhost', $content);

			unset($content);

			// PHP-FPM
			// Dont just copy over the php-fpm pool template but add some custom settings
			$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/php_fpm_pool.conf.master', 'tpl/php_fpm_pool.conf.master');
			$content = str_replace('{fpm_pool}', 'ispconfig', $content);
			//$content = str_replace('{fpm_port}', $conf['nginx']['php_fpm_start_port'], $content);
			$content = str_replace('{fpm_socket}', $fpm_socket, $content);
			$content = str_replace('{fpm_user}', 'ispconfig', $content);
			$content = str_replace('{fpm_group}', 'ispconfig', $content);
			wf($conf['nginx']['php_fpm_pool_dir'].'/ispconfig.conf', $content);

			//copy('tpl/nginx_ispconfig.vhost.master', $vhost_conf_dir.'/ispconfig.vhost');
			//* and create the symlink
			if($this->is_update == false) {
				if(@is_link($vhost_conf_enabled_dir.'/ispconfig.vhost')) unlink($vhost_conf_enabled_dir.'/ispconfig.vhost');
				if(!@is_link($vhost_conf_enabled_dir.'/000-ispconfig.vhost')) {
					symlink($vhost_conf_dir.'/ispconfig.vhost', $vhost_conf_enabled_dir.'/000-ispconfig.vhost');
				}
			}
		}

		//* Install the update script
		if(is_file('/usr/local/bin/ispconfig_update_from_dev.sh')) unlink('/usr/local/bin/ispconfig_update_from_dev.sh');
		chown($install_dir.'/server/scripts/update_from_dev.sh', 'root');
		chmod($install_dir.'/server/scripts/update_from_dev.sh', 0700);
//		chown($install_dir.'/server/scripts/update_from_tgz.sh', 'root');
//		chmod($install_dir.'/server/scripts/update_from_tgz.sh', 0700);
		chown($install_dir.'/server/scripts/ispconfig_update.sh', 'root');
		chmod($install_dir.'/server/scripts/ispconfig_update.sh', 0700);
		if(!is_link('/usr/local/bin/ispconfig_update_from_dev.sh')) symlink($install_dir.'/server/scripts/ispconfig_update.sh', '/usr/local/bin/ispconfig_update_from_dev.sh');
		if(!is_link('/usr/local/bin/ispconfig_update.sh')) symlink($install_dir.'/server/scripts/ispconfig_update.sh', '/usr/local/bin/ispconfig_update.sh');

		//* Make the logs readable for the ispconfig user
		if(@is_file('/var/log/mail.log')) exec('chmod +r /var/log/mail.log');
		if(@is_file('/var/log/mail.warn')) exec('chmod +r /var/log/mail.warn');
		if(@is_file('/var/log/mail.err')) exec('chmod +r /var/log/mail.err');
		if(@is_file('/var/log/messages')) exec('chmod +r /var/log/messages');
		if(@is_file('/var/log/clamav/clamav.log')) exec('chmod +r /var/log/clamav/clamav.log');
		if(@is_file('/var/log/clamav/freshclam.log')) exec('chmod +r /var/log/clamav/freshclam.log');

		//* Create the ispconfig log file and directory
		if(!is_file($conf['ispconfig_log_dir'].'/ispconfig.log')) {
			if(!is_dir($conf['ispconfig_log_dir'])) mkdir($conf['ispconfig_log_dir'], 0755);
			touch($conf['ispconfig_log_dir'].'/ispconfig.log');
		}

		//* Create the ispconfig auth log file and set uid/gid
		if(!is_file($conf['ispconfig_log_dir'].'/auth.log')) {
			touch($conf['ispconfig_log_dir'].'/auth.log');
		}
		exec('chown ispconfig:ispconfig '. $conf['ispconfig_log_dir'].'/auth.log');
		exec('chmod 660 '. $conf['ispconfig_log_dir'].'/auth.log');

		if(is_user('getmail')) {
			rename($install_dir.'/server/scripts/run-getmail.sh', '/usr/local/bin/run-getmail.sh');
			if(is_user('getmail')) chown('/usr/local/bin/run-getmail.sh', 'getmail');
			chmod('/usr/local/bin/run-getmail.sh', 0744);
		}

		//* Add Log-Rotation
		if (is_dir('/etc/logrotate.d')) {
			@unlink('/etc/logrotate.d/logispc3'); // ignore, if the file is not there
			/* We rotate these logs in cron_daily.php
			$fh = fopen('/etc/logrotate.d/logispc3', 'w');
			fwrite($fh,
					"$conf['ispconfig_log_dir']/ispconfig.log { \n" .
					"	weekly \n" .
					"	missingok \n" .
					"	rotate 4 \n" .
					"	compress \n" .
					"	delaycompress \n" .
					"} \n" .
					"$conf['ispconfig_log_dir']/cron.log { \n" .
					"	weekly \n" .
					"	missingok \n" .
					"	rotate 4 \n" .
					"	compress \n" .
					"	delaycompress \n" .
					"}");
			fclose($fh);
			*/
		}

		//* Remove Domain module as its functions are available in the client module now
		if(@is_dir('/usr/local/ispconfig/interface/web/domain')) exec('rm -rf /usr/local/ispconfig/interface/web/domain');
		
		//* Disable rkhunter run and update in debian cronjob as ispconfig is running and updating rkhunter
		if(is_file('/etc/default/rkhunter')) {
			replaceLine('/etc/default/rkhunter', 'CRON_DAILY_RUN="yes"', 'CRON_DAILY_RUN="no"', 1, 0);
			replaceLine('/etc/default/rkhunter', 'CRON_DB_UPDATE="yes"', 'CRON_DB_UPDATE="no"', 1, 0);
		}
		
		// Add symlink for patch tool
		if(!is_link('/usr/local/bin/ispconfig_patch')) exec('ln -s /usr/local/ispconfig/server/scripts/ispconfig_patch /usr/local/bin/ispconfig_patch');
		
		// Change mode of a few files from amavisd
		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
		if(is_file($conf['amavis']['config_dir'].'/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf')) chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf~')) chmod($conf['amavis']['config_dir'].'/amavisd.conf~', 0400);
	}

	public function configure_dbserver() {
		global $conf;

		//* If this server shall act as database server for client DB's, we configure this here
		$install_dir = $conf['ispconfig_install_dir'];

		// Create a file with the database login details which
		// are used to create the client databases.

		if(!is_dir($install_dir.'/server/lib')) {
			$command = "mkdir $install_dir/server/lib";
			caselog($command.' &> /dev/null', __FILE__, __LINE__, "EXECUTED: $command", "Failed to execute the command $command");
		}

		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/mysql_clientdb.conf.master', 'tpl/mysql_clientdb.conf.master');
		$content = str_replace('{hostname}', $conf['mysql']['host'], $content);
		$content = str_replace('{username}', $conf['mysql']['admin_user'], $content);
		$content = str_replace('{password}', addslashes($conf['mysql']['admin_password']), $content);
		wf($install_dir.'/server/lib/mysql_clientdb.conf', $content);
		chmod($install_dir.'/server/lib/mysql_clientdb.conf', 0600);
		chown($install_dir.'/server/lib/mysql_clientdb.conf', 'root');
		chgrp($install_dir.'/server/lib/mysql_clientdb.conf', 'root');

	}

	public function install_crontab() {
		global $conf;

		$install_dir = $conf['ispconfig_install_dir'];

		//* Root Crontab
		exec('crontab -u root -l > crontab.txt');
		$existing_root_cron_jobs = file('crontab.txt');

		// remove existing ispconfig cronjobs, in case the syntax has changed
		foreach($existing_root_cron_jobs as $key => $val) {
			if(stristr($val, $install_dir)) unset($existing_root_cron_jobs[$key]);
		}

		$root_cron_jobs = array(
			"* * * * * ".$install_dir."/server/server.sh 2>&1 | while read line; do echo `/bin/date` \"\$line\" >> ".$conf['ispconfig_log_dir']."/cron.log; done",
			"* * * * * ".$install_dir."/server/cron.sh 2>&1 | while read line; do echo `/bin/date` \"\$line\" >> ".$conf['ispconfig_log_dir']."/cron.log; done"
		);

		if ($conf['nginx']['installed'] == true) {
			$root_cron_jobs[] = "0 0 * * * ".$install_dir."/server/scripts/create_daily_nginx_access_logs.sh &> /dev/null";
		}

		foreach($root_cron_jobs as $cron_job) {
			if(!in_array($cron_job."\n", $existing_root_cron_jobs)) {
				$existing_root_cron_jobs[] = $cron_job."\n";
			}
		}
		file_put_contents('crontab.txt', $existing_root_cron_jobs);
		exec('crontab -u root crontab.txt &> /dev/null');
		unlink('crontab.txt');

		//* Getmail crontab
		if(is_user('getmail')) {
			$cf = $conf['getmail'];
			exec('crontab -u getmail -l > crontab.txt');
			$existing_cron_jobs = file('crontab.txt');

			$cron_jobs = array(
				'*/5 * * * * /usr/local/bin/run-getmail.sh > /dev/null 2>> /dev/null'
			);

			// remove existing ispconfig cronjobs, in case the syntax has changed
			foreach($existing_cron_jobs as $key => $val) {
				if(stristr($val, 'getmail')) unset($existing_cron_jobs[$key]);
			}

			foreach($cron_jobs as $cron_job) {
				if(!in_array($cron_job."\n", $existing_cron_jobs)) {
					$existing_cron_jobs[] = $cron_job."\n";
				}
			}
			file_put_contents('crontab.txt', $existing_cron_jobs);
			exec('crontab -u getmail crontab.txt &> /dev/null');
			unlink('crontab.txt');
		}

		touch($conf['ispconfig_log_dir'].'/cron.log');
		chmod($conf['ispconfig_log_dir'].'/cron.log', 0660);

	}
	
	public function create_mount_script(){
		global $app, $conf;
		$mount_script = '/usr/local/ispconfig/server/scripts/backup_dir_mount.sh';
		$mount_command = '';
		
		if(is_file($mount_script)) return;
		if(is_file('/etc/rc.local')){
			$rc_local = file('/etc/rc.local');
			if(is_array($rc_local) && !empty($rc_local)){
				foreach($rc_local as $line){
					$line = trim($line);
					if(substr($line, 0, 1) == '#') continue;
					if(strpos($line, 'sshfs') !== false && strpos($line, '/var/backup') !== false){
						$mount_command = "#!/bin/sh\n\n";
						$mount_command .= $line."\n\n";
						file_put_contents($mount_script, $mount_command);
						chmod($mount_script, 0755);
						chown($mount_script, 'root');
						chgrp($mount_script, 'root');
						break;
					}
				}
			}
		}
	}
	
	// This function is called at the end of the update process and contains code to clean up parts of old ISPCONfig releases
	public function cleanup_ispconfig() {
		global $app,$conf;
		
		// Remove directories recursively
		if(is_dir('/usr/local/ispconfig/interface/web/designer')) exec('rm -rf /usr/local/ispconfig/interface/web/designer');
		if(is_dir('/usr/local/ispconfig/interface/web/themes/default-304')) exec('rm -rf /usr/local/ispconfig/interface/web/themes/default-304');
		
		// Remove files
		if(is_file('/usr/local/ispconfig/interface/lib/classes/db_firebird.inc.php')) unlink('/usr/local/ispconfig/interface/lib/classes/db_firebird.inc.php');
		if(is_file('/usr/local/ispconfig/interface/lib/classes/form.inc.php')) unlink('/usr/local/ispconfig/interface/lib/classes/form.inc.php');
		
		// Change mode of a few files from amavisd
		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
		if(is_file($conf['amavis']['config_dir'].'/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf')) chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf~')) chmod($conf['amavis']['config_dir'].'/amavisd.conf~', 0400);
		
	}

	public function getinitcommand($servicename, $action, $init_script_directory = ''){
		global $conf;
		// upstart
		if(is_executable('/sbin/initctl')){
			exec('/sbin/initctl version 2>/dev/null | /bin/grep -q upstart', $retval['output'], $retval['retval']);
			if(intval($retval['retval']) == 0) return 'service '.$servicename.' '.$action;
		}
		// systemd
		if(is_executable('/bin/systemd') || is_executable('/usr/bin/systemctl')){
			return 'systemctl '.$action.' '.$servicename.'.service';
		}
		// sysvinit
		if($init_script_directory == '') $init_script_directory = $conf['init_scripts'];
		if(substr($init_script_directory, -1) === '/') $init_script_directory = substr($init_script_directory, 0, -1);
		return $init_script_directory.'/'.$servicename.' '.$action;
	}

	/**
	 * Helper function - get the path to a template file based on
	 * the local part of the filename. Checks first for the existence
	 * of a distribution specific file and if not found looks in the
	 * base template folder. Optionally the behaviour can be changed
	 * by setting the 2nd parameter which will fetch the contents
	 * of the template file and return it instead of the path. The 3rd
	 * parameter further extends this behaviour by filtering the contents
	 * by inserting the ispconfig database credentials using the {} placeholders.
	 *
	 * @param string $tLocal local part of filename
	 * @param bool $tRf
	 * @param bool $tDBCred
	 * @return string Relative path to the chosen template file
	 */
	protected function get_template_file($tLocal, $tRf=false, $tDBCred=false) {
		global $conf, $dist;

		$final_path = '';
		$dist_template = $conf['ispconfig_install_dir'] . '/server/conf-custom/install/' . $tLocal . '.master';
		if (file_exists($dist_template)) {
			$final_path = $dist_template;
		} else {
			$dist_template = 'dist/tpl/'.strtolower($dist['name'])."/$tLocal.master";
			if (file_exists($dist_template)) {
				$final_path = $dist_template;
			} else {
				$final_path = "tpl/$tLocal.master";
			}
		}

		if (!$tRf) {
			return $final_path;
		} else {
			return (!$tDBCred) ? rf($final_path) : $this->insert_db_credentials(rf($final_path));
		}
	}

	/**
	 * Helper function - writes the contents to a config file
	 * and performs a backup if the file exist. Additionally
	 * if the file exists the new file will be given the
	 * same rights and ownership as the original. Optionally the
	 * rights and/or ownership can be overriden by appending umask,
	 * user and group to the parameters. Providing only uid and gid
	 * values will result in only a chown.
	 *
	 * @param $tConf
	 * @param $tContents
	 * @return bool
	 */
	protected function write_config_file($tConf, $tContents) {
		// Backup config file before writing new contents and stat file
		if ( is_file($tConf) ) {
			$stat = exec('stat -c \'%a %U %G\' '.escapeshellarg($tConf), $output, $res);
			if ($res == 0) { // stat successfull
				list($access, $user, $group) = explode(" ", $stat);
			}

			if ( copy($tConf, $tConf.'~') ) {
				chmod($tConf.'~', 0400);
			}
		}

		wf($tConf, $tContents); // write file

		if (func_num_args() >= 4) // override rights and/or ownership
			{
			$args = func_get_args();
			$output = array_slice($args, 2);

			switch (sizeof($output)) {
			case 3:
				$umask = array_shift($output);
				if (is_numeric($umask) && preg_match('/^0?[0-7]{3}$/', $umask)) {
					$access = $umask;
				}
			case 2:
				if (is_user($output[0]) && is_group($output[1])) {
					list($user, $group) = $output;
				}
				break;
			}
		}

		if (!empty($user) && !empty($group)) {
			chown($tConf, $user);
			chgrp($tConf, $group);
		}

		if (!empty($access)) {
			exec("chmod $access $tConf");
		}
	}

	/**
	 * Helper function - filter the contents of a config
	 * file by inserting the common ispconfig database
	 * credentials.
	 *
	 * @param $tContents
	 * @return string
	 */
	protected function insert_db_credentials($tContents) {
		global $conf;

		$tContents = str_replace('{mysql_server_ispconfig_user}', $conf["mysql"]["ispconfig_user"], $tContents);
		$tContents = str_replace('{mysql_server_ispconfig_password}', $conf["mysql"]["ispconfig_password"], $tContents);
		$tContents = str_replace('{mysql_server_database}', $conf["mysql"]["database"], $tContents);
		$tContents = str_replace('{mysql_server_ip}', $conf["mysql"]["ip"], $tContents);
		$tContents = str_replace('{mysql_server_host}', $conf['mysql']['host'], $tContents);
		$tContents = str_replace('{mysql_server_port}', $conf['mysql']['port'], $tContents);
		$tContents = str_replace('{mysql_server_port}', $conf["mysql"]["port"], $tContents);

		return $tContents;
	}

}

?>