apache2_plugin.inc.php

			if($apache_chrooted) {
				$app->services->restartServiceDelayed('httpd', 'restart');
			} else {
				// request a httpd reload when all records have been processed
				$app->services->restartServiceDelayed('httpd', 'reload');
			}

			//* Delete the web-backups
			if($data['old']['type'] == 'vhost') {
				$server_config = $app->getconf->get_server_config($conf['server_id'], 'server');
				$backup_dir = $server_config['backup_dir'];
				//* mount backup directory, if necessary
				$mount_backup = true;
				$server_config['backup_dir_mount_cmd'] = trim($server_config['backup_dir_mount_cmd']);
				if($server_config['backup_dir'] != '' && $server_config['backup_delete'] == 'y') {
					if($server_config['backup_dir_is_mount'] == 'y' && $server_config['backup_dir_mount_cmd'] != ''){
						if(!$app->system->is_mounted($backup_dir)){
							exec(escapeshellcmd($server_config['backup_dir_mount_cmd']));
							sleep(1);
							if(!$app->system->is_mounted($backup_dir)) $mount_backup = false;
						}
					}
					if($mount_backup){
						$web_backup_dir = $backup_dir.'/web'.$data_old['domain_id'];
						//** do not use rm -rf $web_backup_dir because database(s) may exits
						exec(escapeshellcmd('rm -f '.$web_backup_dir.'/web'.$data_old['domain_id'].'_').'*');
						//* cleanup database
						$sql = "DELETE FROM web_backup WHERE server_id = ".$conf['server_id']." AND parent_domain_id = ".$data_old['domain_id']." AND filename LIKE 'web".$data_old['domain_id']."_%'";
						$app->db->query($sql);
						if($app->db->dbHost != $app->dbmaster->dbHost) $app->dbmaster->query($sql);

						$app->log('Deleted the web backup files', LOGLEVEL_DEBUG);
					}
				}
			}
		}
		if($data['old']['type'] != 'vhost') $app->system->web_folder_protection($data['old']['document_root'], true);
	}

	//* This function is called when a IP on the server is inserted, updated or deleted
	function server_ip($event_name, $data) {
		global $app, $conf;

		// load the server configuration options
		$app->uses('getconf');
		$web_config = $app->getconf->get_server_config($conf['server_id'], 'web');

		$app->load('tpl');

		$tpl = new tpl();
		$tpl->newTemplate('apache_ispconfig.conf.master');
		$tpl->setVar('apache_version', $app->system->getapacheversion());
		$records = $app->db->queryAllRecords('SELECT * FROM server_ip WHERE server_id = '.$conf['server_id']." AND virtualhost = 'y'");

		$records_out= array();
		if(is_array($records)) {
			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 != '') {
							$records_out[] = array('ip_address' => $ip_address, 'port' => $port);
						}
					}
				}
			}
		}


		if(count($records_out) > 0) {
			$tpl->setLoop('ip_adresses', $records_out);
		}

		$vhost_file = escapeshellcmd($web_config['vhost_conf_dir'].'/ispconfig.conf');
		$app->system->file_put_contents($vhost_file, $tpl->grab());
		$app->log('Writing the conf file: '.$vhost_file, LOGLEVEL_DEBUG);
		unset($tpl);

	}

	//* Create or update the .htaccess folder protection
	function web_folder_user($event_name, $data) {
		global $app, $conf;

		$app->uses('system');

		if($event_name == 'web_folder_user_delete') {
			$folder_id = $data['old']['web_folder_id'];
		} else {
			$folder_id = $data['new']['web_folder_id'];
		}

		$folder = $app->db->queryOneRecord("SELECT * FROM web_folder WHERE web_folder_id = ".intval($folder_id));
		$website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ".intval($folder['parent_domain_id']));

		if(!is_array($folder) or !is_array($website)) {
			$app->log('Not able to retrieve folder or website record.', LOGLEVEL_DEBUG);
			return false;
		}

		$web_folder = 'web';
		if($website['type'] == 'vhostsubdomain' || $website['type'] == 'vhostalias') $web_folder = $website['web_folder'];

		//* Get the folder path.
		if(substr($folder['path'], 0, 1) == '/') $folder['path'] = substr($folder['path'], 1);
		if(substr($folder['path'], -1) == '/') $folder['path'] = substr($folder['path'], 0, -1);
		$folder_path = escapeshellcmd($website['document_root'].'/' . $web_folder . '/'.$folder['path']);
		if(substr($folder_path, -1) != '/') $folder_path .= '/';

		//* Check if the resulting path is inside the docroot
		if(stristr($folder_path, '..') || stristr($folder_path, './') || stristr($folder_path, '\\')) {
			$app->log('Folder path "'.$folder_path.'" contains .. or ./.', LOGLEVEL_DEBUG);
			return false;
		}

		//* Create the folder path, if it does not exist
		if(!is_dir($folder_path)) {
			$app->system->mkdirpath($folder_path, 0755, $website['system_user'], $website['system_group']);
		}

		//* Create empty .htpasswd file, if it does not exist
		if(!is_file($folder_path.'.htpasswd')) {
			$app->system->touch($folder_path.'.htpasswd');
			$app->system->chmod($folder_path.'.htpasswd', 0750);
			$app->system->chown($folder_path.'.htpasswd', $website['system_user']);
			$app->system->chgrp($folder_path.'.htpasswd', $website['system_group']);
			$app->log('Created file '.$folder_path.'.htpasswd', LOGLEVEL_DEBUG);
		}

		/*
		$auth_users = $app->db->queryAllRecords("SELECT * FROM web_folder_user WHERE active = 'y' AND web_folder_id = ".intval($folder_id));
		$htpasswd_content = '';
		if(is_array($auth_users) && !empty($auth_users)){
			foreach($auth_users as $auth_user){
				$htpasswd_content .= $auth_user['username'].':'.$auth_user['password']."\n";
			}
		}
		$htpasswd_content = trim($htpasswd_content);
		@file_put_contents($folder_path.'.htpasswd', $htpasswd_content);
		$app->log('Changed .htpasswd file: '.$folder_path.'.htpasswd',LOGLEVEL_DEBUG);
		*/

		if(($data['new']['username'] != $data['old']['username'] || $data['new']['active'] == 'n') && $data['old']['username'] != '') {
			$app->system->removeLine($folder_path.'.htpasswd', $data['old']['username'].':');
			$app->log('Removed user: '.$data['old']['username'], LOGLEVEL_DEBUG);
		}

		//* Add or remove the user from .htpasswd file
		if($event_name == 'web_folder_user_delete') {
			$app->system->removeLine($folder_path.'.htpasswd', $data['old']['username'].':');
			$app->log('Removed user: '.$data['old']['username'], LOGLEVEL_DEBUG);
		} else {
			if($data['new']['active'] == 'y') {
				$app->system->replaceLine($folder_path.'.htpasswd', $data['new']['username'].':', $data['new']['username'].':'.$data['new']['password'], 0, 1);
				$app->log('Added or updated user: '.$data['new']['username'], LOGLEVEL_DEBUG);
			}
		}


		//* Create the .htaccess file
		//if(!is_file($folder_path.'.htaccess')) {
		$begin_marker = '### ISPConfig folder protection begin ###';
		$end_marker = "### ISPConfig folder protection end ###\n\n";
		$ht_file = $begin_marker."\nAuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$folder_path.".htpasswd\nrequire valid-user\n".$end_marker;

		if(file_exists($folder_path.'.htaccess')) {
			$old_content = $app->system->file_get_contents($folder_path.'.htaccess');

			if(preg_match('/' . preg_quote($begin_marker, '/') . '(.*?)' . preg_quote($end_marker, '/') . '/s', $old_content, $matches)) {
				$ht_file = str_replace($matches[0], $ht_file, $old_content);
			} else {
				$ht_file .= $old_content;
			}
		}
		unset($old_content);

		$app->system->file_put_contents($folder_path.'.htaccess', $ht_file);
		$app->system->chmod($folder_path.'.htaccess', 0750);
		$app->system->chown($folder_path.'.htaccess', $website['system_user']);
		$app->system->chgrp($folder_path.'.htaccess', $website['system_group']);
		$app->log('Created/modified file '.$folder_path.'.htaccess', LOGLEVEL_DEBUG);
		//}

	}

	//* Remove .htaccess and .htpasswd file, when folder protection is removed
	function web_folder_delete($event_name, $data) {
		global $app, $conf;

		$folder_id = $data['old']['web_folder_id'];

		$folder = $data['old'];
		$website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ".intval($folder['parent_domain_id']));

		if(!is_array($folder) or !is_array($website)) {
			$app->log('Not able to retrieve folder or website record.', LOGLEVEL_DEBUG);
			return false;
		}

		$web_folder = 'web';
		if($website['type'] == 'vhostsubdomain' || $website['type'] == 'vhostalias') $web_folder = $website['web_folder'];

		//* Get the folder path.
		if(substr($folder['path'], 0, 1) == '/') $folder['path'] = substr($folder['path'], 1);
		if(substr($folder['path'], -1) == '/') $folder['path'] = substr($folder['path'], 0, -1);
		$folder_path = realpath($website['document_root'].'/' . $web_folder . '/'.$folder['path']);
		if(substr($folder_path, -1) != '/') $folder_path .= '/';

		//* Check if the resulting path is inside the docroot
		if(substr($folder_path, 0, strlen($website['document_root'])) != $website['document_root']) {
			$app->log('Folder path is outside of docroot.', LOGLEVEL_DEBUG);
			return false;
		}

		//* Remove .htpasswd file
		if(is_file($folder_path.'.htpasswd')) {
			$app->system->unlink($folder_path.'.htpasswd');
			$app->log('Removed file '.$folder_path.'.htpasswd', LOGLEVEL_DEBUG);
		}

		//* Remove .htaccess file
		if(is_file($folder_path.'.htaccess')) {
			$begin_marker = '### ISPConfig folder protection begin ###';
			$end_marker = "### ISPConfig folder protection end ###\n\n";

			$ht_file = $app->system->file_get_contents($folder_path.'.htaccess');

			if(preg_match('/' . preg_quote($begin_marker, '/') . '(.*?)' . preg_quote($end_marker, '/') . '/s', $ht_file, $matches)) {
				$ht_file = str_replace($matches[0], '', $ht_file);
			} else {
				$ht_file = str_replace("AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$folder_path.".htpasswd\nrequire valid-user", '', $ht_file);
			}

			if(trim($ht_file) == '') {
				$app->system->unlink($folder_path.'.htaccess');
				$app->log('Removed file '.$folder_path.'.htaccess', LOGLEVEL_DEBUG);
			} else {
				$app->system->file_put_contents($folder_path.'.htaccess', $ht_file);
				$app->log('Removed protection content from file '.$folder_path.'.htaccess', LOGLEVEL_DEBUG);
			}
		}
	}

	//* Update folder protection, when path has been changed
	function web_folder_update($event_name, $data) {
		global $app, $conf;

		$website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ".intval($data['new']['parent_domain_id']));

		if(!is_array($website)) {
			$app->log('Not able to retrieve folder or website record.', LOGLEVEL_DEBUG);
			return false;
		}

		$web_folder = 'web';
		if($website['type'] == 'vhostsubdomain' || $website['type'] == 'vhostalias') $web_folder = $website['web_folder'];

		//* Get the folder path.
		if(substr($data['old']['path'], 0, 1) == '/') $data['old']['path'] = substr($data['old']['path'], 1);
		if(substr($data['old']['path'], -1) == '/') $data['old']['path'] = substr($data['old']['path'], 0, -1);
		$old_folder_path = realpath($website['document_root'].'/' . $web_folder . '/'.$data['old']['path']);
		if(substr($old_folder_path, -1) != '/') $old_folder_path .= '/';

		if(substr($data['new']['path'], 0, 1) == '/') $data['new']['path'] = substr($data['new']['path'], 1);
		if(substr($data['new']['path'], -1) == '/') $data['new']['path'] = substr($data['new']['path'], 0, -1);
		$new_folder_path = escapeshellcmd($website['document_root'].'/' . $web_folder . '/'.$data['new']['path']);
		if(substr($new_folder_path, -1) != '/') $new_folder_path .= '/';

		//* Check if the resulting path is inside the docroot
		if(stristr($new_folder_path, '..') || stristr($new_folder_path, './') || stristr($new_folder_path, '\\')) {
			$app->log('Folder path "'.$new_folder_path.'" contains .. or ./.', LOGLEVEL_DEBUG);
			return false;
		}
		if(stristr($old_folder_path, '..') || stristr($old_folder_path, './') || stristr($old_folder_path, '\\')) {
			$app->log('Folder path "'.$old_folder_path.'" contains .. or ./.', LOGLEVEL_DEBUG);
			return false;
		}

		//* Check if the resulting path is inside the docroot
		if(substr($old_folder_path, 0, strlen($website['document_root'])) != $website['document_root']) {
			$app->log('Old folder path '.$old_folder_path.' is outside of docroot.', LOGLEVEL_DEBUG);
			return false;
		}
		if(substr($new_folder_path, 0, strlen($website['document_root'])) != $website['document_root']) {
			$app->log('New folder path '.$new_folder_path.' is outside of docroot.', LOGLEVEL_DEBUG);
			return false;
		}

		//* Create the folder path, if it does not exist
		if(!is_dir($new_folder_path)) $app->system->mkdirpath($new_folder_path);

		$begin_marker = '### ISPConfig folder protection begin ###';
		$end_marker = "### ISPConfig folder protection end ###\n\n";

		if($data['old']['path'] != $data['new']['path']) {


			//* move .htpasswd file
			if(is_file($old_folder_path.'.htpasswd')) {
				$app->system->rename($old_folder_path.'.htpasswd', $new_folder_path.'.htpasswd');
				$app->log('Moved file '.$old_folder_path.'.htpasswd to '.$new_folder_path.'.htpasswd', LOGLEVEL_DEBUG);
			}

			//* delete old .htaccess file
			if(is_file($old_folder_path.'.htaccess')) {
				$ht_file = $app->system->file_get_contents($old_folder_path.'.htaccess');

				if(preg_match('/' . preg_quote($begin_marker, '/') . '(.*?)' . preg_quote($end_marker, '/') . '/s', $ht_file, $matches)) {
					$ht_file = str_replace($matches[0], '', $ht_file);
				} else {
					$ht_file = str_replace("AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$old_folder_path.".htpasswd\nrequire valid-user", '', $ht_file);
				}

				if(trim($ht_file) == '') {
					$app->system->unlink($old_folder_path.'.htaccess');
					$app->log('Removed file '.$old_folder_path.'.htaccess', LOGLEVEL_DEBUG);
				} else {
					$app->system->file_put_contents($old_folder_path.'.htaccess', $ht_file);
					$app->log('Removed protection content from file '.$old_folder_path.'.htaccess', LOGLEVEL_DEBUG);
				}
			}

		}

		//* Create the .htaccess file
		if($data['new']['active'] == 'y') {
			$ht_file = $begin_marker."\nAuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$new_folder_path.".htpasswd\nrequire valid-user\n".$end_marker;

			if(file_exists($new_folder_path.'.htaccess')) {
				$old_content = $app->system->file_get_contents($new_folder_path.'.htaccess');

				if(preg_match('/' . preg_quote($begin_marker, '/') . '(.*?)' . preg_quote($end_marker, '/') . '/s', $old_content, $matches)) {
					$ht_file = str_replace($matches[0], $ht_file, $old_content);
				} else {
					$ht_file .= $old_content;
				}
			}

			$app->system->file_put_contents($new_folder_path.'.htaccess', $ht_file);
			$app->system->chmod($new_folder_path.'.htaccess', 0750);
			$app->system->chown($new_folder_path.'.htaccess', $website['system_user']);
			$app->system->chgrp($new_folder_path.'.htaccess', $website['system_group']);
			$app->log('Created/modified file '.$new_folder_path.'.htaccess', LOGLEVEL_DEBUG);
			
			//* Create empty .htpasswd file, if it does not exist
			if(!is_file($folder_path.'.htpasswd')) {
				$app->system->touch($new_folder_path.'.htpasswd');
				$app->system->chmod($new_folder_path.'.htpasswd', 0750);
				$app->system->chown($new_folder_path.'.htpasswd', $website['system_user']);
				$app->system->chgrp($new_folder_path.'.htpasswd', $website['system_group']);
				$app->log('Created file '.$new_folder_path.'.htpasswd', LOGLEVEL_DEBUG);
			}
		}

		//* Remove .htaccess file
		if($data['new']['active'] == 'n' && is_file($new_folder_path.'.htaccess')) {
			$ht_file = $app->system->file_get_contents($new_folder_path.'.htaccess');

			if(preg_match('/' . preg_quote($begin_marker, '/') . '(.*?)' . preg_quote($end_marker, '/') . '/s', $ht_file, $matches)) {
				$ht_file = str_replace($matches[0], '', $ht_file);
			} else {
				$ht_file = str_replace("AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$new_folder_path.".htpasswd\nrequire valid-user", '', $ht_file);
			}

			if(trim($ht_file) == '') {
				$app->system->unlink($new_folder_path.'.htaccess');
				$app->log('Removed file '.$new_folder_path.'.htaccess', LOGLEVEL_DEBUG);
			} else {
				$app->system->file_put_contents($new_folder_path.'.htaccess', $ht_file);
				$app->log('Removed protection content from file '.$new_folder_path.'.htaccess', LOGLEVEL_DEBUG);
			}
		}


	}

	public function ftp_user_delete($event_name, $data) {
		global $app, $conf;

		$ftpquota_file = $data['old']['dir'].'/.ftpquota';
		if(file_exists($ftpquota_file)) $app->system->unlink($ftpquota_file);

	}



	/**
	 * This function is called when a Webdav-User is inserted, updated or deleted.
	 *
	 * @author Oliver Vogel
	 * @param string $event_name
	 * @param array $data
	 */
	public function webdav($event_name, $data) {
		global $app, $conf;

		/*
		 * load the server configuration options
		*/
		$app->uses('getconf');
		$web_config = $app->getconf->get_server_config($conf['server_id'], 'web');

		if (($event_name == 'webdav_user_insert') || ($event_name == 'webdav_user_update')) {

			/*
			 * Get additional informations
			*/
			$sitedata = $app->db->queryOneRecord('SELECT document_root, domain, system_user, system_group FROM web_domain WHERE domain_id = ' . $data['new']['parent_domain_id']);
			$documentRoot = $sitedata['document_root'];
			$domain = $sitedata['domain'];
			$user = $sitedata['system_user'];
			$group = $sitedata['system_group'];
			$webdav_user_dir = $documentRoot . '/webdav/' . $data['new']['dir'];

			/* Check if this is a chrooted setup */
			if($web_config['website_basedir'] != '' && @is_file($web_config['website_basedir'].'/etc/passwd')) {
				$apache_chrooted = true;
				$app->log('Info: Apache is chrooted.', LOGLEVEL_DEBUG);
			} else {
				$apache_chrooted = false;
			}

			//* We dont want to have relative paths here
			if(stristr($webdav_user_dir, '..')  || stristr($webdav_user_dir, './')) {
				$app->log('Folder path '.$webdav_user_dir.' contains ./ or .. '.$documentRoot, LOGLEVEL_WARN);
				return false;
			}

			//* Check if the resulting path exists if yes, if it is inside the docroot
			if(is_dir($webdav_user_dir) && substr(realpath($webdav_user_dir), 0, strlen($documentRoot)) != $documentRoot) {
				$app->log('Folder path '.$webdav_user_dir.' is outside of docroot '.$documentRoot, LOGLEVEL_WARN);
				return false;
			}

			/*
			 * First the webdav-root - folder has to exist
			*/
			if(!is_dir($webdav_user_dir)) {
				$app->log('Webdav User directory '.$webdav_user_dir.' does not exist. Creating it now.', LOGLEVEL_DEBUG);
				$app->system->mkdirpath($webdav_user_dir);
			}

			/*
			 * The webdav - Root needs the group/user as owner and the apache as read and write
			*/
			//$this->_exec('chown ' . $user . ':' . $group . ' ' . escapeshellcmd($documentRoot . '/webdav/'));
			//$this->_exec('chmod 770 ' . escapeshellcmd($documentRoot . '/webdav/'));
			$app->system->chown($documentRoot . '/webdav', $user);
			$app->system->chgrp($documentRoot . '/webdav', $group);
			$app->system->chmod($documentRoot . '/webdav', 0770);

			/*
			 * The webdav folder (not the webdav-root!) needs the same (not in ONE step, because the
			 * pwd-files are owned by root)
			*/
			//$this->_exec('chown ' . $user . ':' . $group . ' ' . escapeshellcmd($webdav_user_dir.' -R'));
			//$this->_exec('chmod 770 ' . escapeshellcmd($webdav_user_dir.' -R'));
			$app->system->chown($webdav_user_dir, $user);
			$app->system->chgrp($webdav_user_dir, $group);
			$app->system->chmod($webdav_user_dir, 0770);

			/*
			 * if the user is active, we have to write/update the password - file
			 * if the user is inactive, we have to inactivate the user by removing the user from the file
			*/
			if ($data['new']['active'] == 'y') {
				$this->_writeHtDigestFile( $webdav_user_dir . '.htdigest', $data['new']['username'], $data['new']['dir'], $data['new']['password']);
			}
			else {
				/* empty pwd removes the user! */
				$this->_writeHtDigestFile( $webdav_user_dir . '.htdigest', $data['new']['username'], $data['new']['dir'], '');
			}

			/*
			 * Next step, patch the vhost - file
			*/
			$vhost_file = escapeshellcmd($web_config['vhost_conf_dir'] . '/' . $domain . '.vhost');
			$this->_patchVhostWebdav($vhost_file, $documentRoot . '/webdav');

			/*
			 * Last, restart apache
			*/
			if($apache_chrooted) {
				$app->services->restartServiceDelayed('httpd', 'restart');
			} else {
				// request a httpd reload when all records have been processed
				$app->services->restartServiceDelayed('httpd', 'reload');
			}

		}

		if ($event_name == 'webdav_user_delete') {
			/*
			 * Get additional informations
			*/
			$sitedata = $app->db->queryOneRecord('SELECT document_root, domain FROM web_domain WHERE domain_id = ' . $data['old']['parent_domain_id']);
			$documentRoot = $sitedata['document_root'];
			$domain = $sitedata['domain'];

			/*
			 * We dont't want to destroy any (transfer)-Data. So we do NOT delete any dir.
			 * So the only thing, we have to do, is to delete the user from the password-file
			*/
			$this->_writeHtDigestFile( $documentRoot . '/webdav/' . $data['old']['dir'] . '.htdigest', $data['old']['username'], $data['old']['dir'], '');

			/*
			 * Next step, patch the vhost - file
			*/
			$vhost_file = escapeshellcmd($web_config['vhost_conf_dir'] . '/' . $domain . '.vhost');
			$this->_patchVhostWebdav($vhost_file, $documentRoot . '/webdav');

			/*
			 * Last, restart apache
			*/
			if($apache_chrooted) {
				$app->services->restartServiceDelayed('httpd', 'restart');
			} else {
				// request a httpd reload when all records have been processed
				$app->services->restartServiceDelayed('httpd', 'reload');
			}
		}
	}


	/**
	 * This function writes the htdigest - files used by webdav and digest
	 * more info: see http://riceball.com/d/node/424
	 * @author Oliver Vogel
	 * @param string $filename The name of the digest-file
	 * @param string $username The name of the webdav-user
	 * @param string $authname The name of the realm
	 * @param string $pwd      The password-hash of the user
	 */
	private function _writeHtDigestFile($filename, $username, $authname, $pwdhash ) {
		global $app;

		$changed = false;
		if(is_file($filename) && !is_link($filename)) {
			$in = fopen($filename, 'r');
			$output = '';
			/*
			* read line by line and search for the username and authname
			*/
			while (preg_match("/:/", $line = fgets($in))) {
				$line = rtrim($line);
				$tmp = explode(':', $line);
				if ($tmp[0] == $username && $tmp[1] == $authname) {
					/*
					* found the user. delete or change it?
					*/
					if ($pwdhash != '') {
						$output .= $tmp[0] . ':' . $tmp[1] . ':' . $pwdhash . "\n";
					}
					$changed = true;
				}
				else {
					$output .= $line . "\n";
				}
			}
			fclose($in);
		}
		/*
		 * if we didn't change anything, we have to add the new user at the end of the file
		*/
		if (!$changed) {
			$output .= $username . ':' . $authname . ':' . $pwdhash . "\n";
		}


		/*
		 * Now lets write the new file
		*/
		if(trim($output) == '') {
			$app->system->unlink($filename);
		} else {
			$app->system->file_put_contents($filename, $output);
		}
	}

	/**
	 * This function patches the vhost-file and adds all webdav - user.
	 * This function is written, because the creation of the vhost - file is sophisticated and
	 * i don't want to make it more "heavy" by also adding this code too...
	 * @author Oliver Vogel
	 * @param string $fileName The Name of the .vhost-File (path included)
	 * @param string $webdavRoot The root of the webdav-folder
	 */
	private function _patchVhostWebdav($fileName, $webdavRoot) {
		global $app;
		$in = fopen($fileName, 'r');
		$output = '';
		$inWebdavSection = false;

		/*
		 * read line by line and search for the username and authname
		*/
		while ($line = fgets($in)) {
			/*
			 *  is the "replace-comment" found...
			*/
			if (trim($line) == '# WEBDAV BEGIN') {
				/*
				 * The begin of the webdav - section is found, so ignore all lines til the end  is found
				*/
				$inWebdavSection = true;

				$output .= "      # WEBDAV BEGIN\n";

				/*
				 * add all the webdav-dirs to the webdav-section
				*/
				$files = @scandir($webdavRoot);
				if(is_array($files)) {
					foreach($files as $file) {
						if (substr($file, strlen($file) - strlen('.htdigest')) == '.htdigest' && preg_match("/^[a-zA-Z0-9\-_\.]*$/", $file)) {
							/*
						 * found a htdigest - file, so add it to webdav
						*/
							$fn = substr($file, 0, strlen($file) - strlen('.htdigest'));
							$output .= "\n";
							// $output .= "      Alias /" . $fn . ' ' . $webdavRoot . '/' . $fn . "\n";
							// $output .= "      <Location /" . $fn . ">\n";
							$output .= "      Alias /webdav/" . $fn . ' ' . $webdavRoot . '/' . $fn . "\n";
							$output .= "      <Location /webdav/" . $fn . ">\n";
							$output .= "        DAV On\n";
							$output .= '        BrowserMatch "MSIE" AuthDigestEnableQueryStringHack=On'."\n";
							$output .= "        AuthType Digest\n";
							$output .= "        AuthName \"" . $fn . "\"\n";
							$output .= "        AuthUserFile " . $webdavRoot . '/' . $file . "\n";
							$output .= "        Require valid-user \n";
							$output .= "        Options +Indexes \n";
							$output .= "        Order allow,deny \n";
							$output .= "        Allow from all \n";
							$output .= "      </Location> \n";
						}
					}
				}
			}
			/*
			 *  is the "replace-comment-end" found...
			*/
			if (trim($line) == '# WEBDAV END') {
				/*
				 * The end of the webdav - section is found, so stop ignoring
				*/
				$inWebdavSection = false;
			}

			/*
			 * Write the line to the output, if it is not in the section
			*/
			if (!$inWebdavSection) {
				$output .= $line;
			}
		}
		fclose($in);

		/*
		 * Now lets write the new file
		*/
		$app->system->file_put_contents($fileName, $output);

	}

	//* Update the awstats configuration file
	private function awstats_update ($data, $web_config) {
		global $app;

		$web_folder = $data['new']['web_folder'];
		if($data['new']['type'] == 'vhost') $web_folder = 'web';
		$awstats_conf_dir = $web_config['awstats_conf_dir'];

		if(!is_dir($data['new']['document_root']."/" . $web_folder . "/stats/")) mkdir($data['new']['document_root']."/" . $web_folder . "/stats");
		if(!@is_file($awstats_conf_dir.'/awstats.'.$data['new']['domain'].'.conf') || ($data['old']['domain'] != '' && $data['new']['domain'] != $data['old']['domain'])) {
			if ( @is_file($awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf') ) {
				$app->system->unlink($awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf');
			}

			$content = '';
			if (is_file($awstats_conf_dir."/awstats.conf")) {
				$include_file = $awstats_conf_dir."/awstats.conf";
			} elseif (is_file($awstats_conf_dir."/awstats.model.conf")) {
				$include_file = $awstats_conf_dir."/awstats.model.conf";
			}
			$content .= "Include \"".$include_file."\"\n";
			$content .= "LogFile=\"/var/log/ispconfig/httpd/".$data['new']['domain']."/access.log\"\n";
			$content .= "SiteDomain=\"".$data['new']['domain']."\"\n";
			$content .= "HostAliases=\"www.".$data['new']['domain']."  localhost 127.0.0.1\"\n";

			if (isset($include_file)) {
				$app->system->file_put_contents($awstats_conf_dir.'/awstats.'.$data['new']['domain'].'.conf', $content);
				$app->log('Created AWStats config file: '.$awstats_conf_dir.'/awstats.'.$data['new']['domain'].'.conf', LOGLEVEL_DEBUG);
			} else {
				$app->log("No awstats base config found. Either awstats.conf or awstats.model.conf must exist in ".$awstats_conf_dir.".", LOGLEVEL_WARN);
			}
		}

		if(is_file($data['new']['document_root']."/" . $web_folder . "/stats/index.html")) $app->system->unlink($data['new']['document_root']."/" . $web_folder . "/stats/index.html");
		if(file_exists("/usr/local/ispconfig/server/conf-custom/awstats_index.php.master")) {
			$app->system->copy("/usr/local/ispconfig/server/conf-custom/awstats_index.php.master", $data['new']['document_root']."/" . $web_folder . "/stats/index.php");
		} else {
			$app->system->copy("/usr/local/ispconfig/server/conf/awstats_index.php.master", $data['new']['document_root']."/" . $web_folder . "/stats/index.php");
		}
	}

	//* Delete the awstats configuration file
	private function awstats_delete ($data, $web_config) {
		global $app;

		$awstats_conf_dir = $web_config['awstats_conf_dir'];

		if ( @is_file($awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf') ) {
			$app->system->unlink($awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf');
			$app->log('Removed AWStats config file: '.$awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf', LOGLEVEL_DEBUG);
		}
	}

	//* Update the PHP-FPM pool configuration file
	private function php_fpm_pool_update ($data, $web_config, $pool_dir, $pool_name, $socket_dir) {
		global $app, $conf;
		//$reload = false;

		if($data['new']['php'] == 'php-fpm'){
			if(trim($data['new']['fastcgi_php_version']) != ''){
				$default_php_fpm = false;
				list($custom_php_fpm_name, $custom_php_fpm_init_script, $custom_php_fpm_ini_dir, $custom_php_fpm_pool_dir) = explode(':', trim($data['new']['fastcgi_php_version']));
				if(substr($custom_php_fpm_ini_dir, -1) != '/') $custom_php_fpm_ini_dir .= '/';
			} else {
				$default_php_fpm = true;
			}
		} else {
			if(trim($data['old']['fastcgi_php_version']) != '' && $data['old']['php'] == 'php-fpm'){
				$default_php_fpm = false;
				list($custom_php_fpm_name, $custom_php_fpm_init_script, $custom_php_fpm_ini_dir, $custom_php_fpm_pool_dir) = explode(':', trim($data['old']['fastcgi_php_version']));
				if(substr($custom_php_fpm_ini_dir, -1) != '/') $custom_php_fpm_ini_dir .= '/';
			} else {
				$default_php_fpm = true;
			}
		}

		$app->uses("getconf");
		$web_config = $app->getconf->get_server_config($conf["server_id"], 'web');

		if($data['new']['php'] != 'php-fpm'){
			if(@is_file($pool_dir.$pool_name.'.conf')){
				$app->system->unlink($pool_dir.$pool_name.'.conf');
				//$reload = true;
			}
			if($data['old']['php'] == 'php-fpm'){
				if(!$default_php_fpm){
					$app->services->restartService('php-fpm', 'reload:'.$custom_php_fpm_init_script);
				} else {
					$app->services->restartService('php-fpm', 'reload:'.$conf['init_scripts'].'/'.$web_config['php_fpm_init_script']);
				}
			}
			//if($reload == true) $app->services->restartService('php-fpm','reload');
			return;
		}

		$app->load('tpl');
		$tpl = new tpl();
		$tpl->newTemplate('php_fpm_pool.conf.master');
		$tpl->setVar('apache_version', $app->system->getapacheversion());
		
		if($data['new']['php_fpm_use_socket'] == 'y'){
			$use_tcp = 0;
			$use_socket = 1;
			if(!is_dir($socket_dir)) $app->system->mkdirpath($socket_dir);
		} else {
			$use_tcp = 1;
			$use_socket = 0;
		}
		$tpl->setVar('use_tcp', $use_tcp);
		$tpl->setVar('use_socket', $use_socket);

		$fpm_socket = $socket_dir.$pool_name.'.sock';
		$tpl->setVar('fpm_socket', $fpm_socket);
		$tpl->setVar('fpm_listen_mode', '0600');

		$tpl->setVar('fpm_pool', $pool_name);
		$tpl->setVar('fpm_port', $web_config['php_fpm_start_port'] + $data['new']['domain_id'] - 1);
		$tpl->setVar('fpm_user', $data['new']['system_user']);
		$tpl->setVar('fpm_group', $data['new']['system_group']);
		$tpl->setVar('fpm_domain', $data['new']['domain']);
		$tpl->setVar('pm', $data['new']['pm']);
		$tpl->setVar('pm_max_children', $data['new']['pm_max_children']);
		$tpl->setVar('pm_start_servers', $data['new']['pm_start_servers']);
		$tpl->setVar('pm_min_spare_servers', $data['new']['pm_min_spare_servers']);
		$tpl->setVar('pm_max_spare_servers', $data['new']['pm_max_spare_servers']);
		$tpl->setVar('pm_process_idle_timeout', $data['new']['pm_process_idle_timeout']);
		$tpl->setVar('pm_max_requests', $data['new']['pm_max_requests']);
		$tpl->setVar('document_root', $data['new']['document_root']);
		$tpl->setVar('security_level', $web_config['security_level']);
		$tpl->setVar('domain', $data['new']['domain']);
		$php_open_basedir = ($data['new']['php_open_basedir'] == '')?escapeshellcmd($data['new']['document_root']):escapeshellcmd($data['new']['php_open_basedir']);
		$tpl->setVar('php_open_basedir', $php_open_basedir);
		if($php_open_basedir != ''){
			$tpl->setVar('enable_php_open_basedir', '');
		} else {
			$tpl->setVar('enable_php_open_basedir', ';');
		}

		// Custom php.ini settings
		$final_php_ini_settings = array();
		$custom_php_ini_settings = trim($data['new']['custom_php_ini']);
		if($custom_php_ini_settings != ''){
			// Make sure we only have Unix linebreaks
			$custom_php_ini_settings = str_replace("\r\n", "\n", $custom_php_ini_settings);
			$custom_php_ini_settings = str_replace("\r", "\n", $custom_php_ini_settings);
			$ini_settings = explode("\n", $custom_php_ini_settings);
			if(is_array($ini_settings) && !empty($ini_settings)){
				foreach($ini_settings as $ini_setting){
					$ini_setting = trim($ini_setting);
					if(substr($ini_setting, 0, 1) == ';') continue;
					if(substr($ini_setting, 0, 1) == '#') continue;
					if(substr($ini_setting, 0, 2) == '//') continue;
					list($key, $value) = explode('=', $ini_setting, 2);
					$value = trim($value);
					if($value != ''){
						$key = trim($key);
						switch (strtolower($value)) {
						case '0':
							// PHP-FPM might complain about invalid boolean value if you use 0
							$value = 'off';
						case '1':
						case 'on':
						case 'off':
						case 'true':
						case 'false':
						case 'yes':
						case 'no':
							$final_php_ini_settings[] = array('ini_setting' => 'php_admin_flag['.$key.'] = '.$value);
							break;
						default:
							$final_php_ini_settings[] = array('ini_setting' => 'php_admin_value['.$key.'] = '.$value);
						}
					}
				}
			}
		}

		$tpl->setLoop('custom_php_ini_settings', $final_php_ini_settings);

		$app->system->file_put_contents($pool_dir.$pool_name.'.conf', $tpl->grab());
		$app->log('Writing the PHP-FPM config file: '.$pool_dir.$pool_name.'.conf', LOGLEVEL_DEBUG);
		unset($tpl);

		// delete pool in all other PHP versions
		$default_pool_dir = escapeshellcmd($web_config['php_fpm_pool_dir']);
		if(substr($default_pool_dir, -1) != '/') $default_pool_dir .= '/';
		if($default_pool_dir != $pool_dir){
			if ( @is_file($default_pool_dir.$pool_name.'.conf') ) {
				$app->system->unlink($default_pool_dir.$pool_name.'.conf');
				$app->log('Removed PHP-FPM config file: '.$default_pool_dir.$pool_name.'.conf', LOGLEVEL_DEBUG);
				$app->services->restartService('php-fpm', 'reload:'.$conf['init_scripts'].'/'.$web_config['php_fpm_init_script']);
			}
		}
		$php_versions = $app->db->queryAllRecords("SELECT * FROM server_php WHERE php_fpm_init_script != '' AND php_fpm_ini_dir != '' AND php_fpm_pool_dir != '' AND server_id = ".$conf["server_id"]);
		if(is_array($php_versions) && !empty($php_versions)){
			foreach($php_versions as $php_version){
				if(substr($php_version['php_fpm_pool_dir'], -1) != '/') $php_version['php_fpm_pool_dir'] .= '/';
				if($php_version['php_fpm_pool_dir'] != $pool_dir){
					if ( @is_file($php_version['php_fpm_pool_dir'].$pool_name.'.conf') ) {
						$app->system->unlink($php_version['php_fpm_pool_dir'].$pool_name.'.conf');
						$app->log('Removed PHP-FPM config file: '.$php_version['php_fpm_pool_dir'].$pool_name.'.conf', LOGLEVEL_DEBUG);
						$app->services->restartService('php-fpm', 'reload:'.$php_version['php_fpm_init_script']);
					}
				}
			}
		}
		// Reload current PHP-FPM after all others
		sleep(1);
		if(!$default_php_fpm){
			$app->services->restartService('php-fpm', 'reload:'.$custom_php_fpm_init_script);
		} else {
			$app->services->restartService('php-fpm', 'reload:'.$conf['init_scripts'].'/'.$web_config['php_fpm_init_script']);
		}

		//$reload = true;

		//if($reload == true) $app->services->restartService('php-fpm','reload');
	}

	//* Delete the PHP-FPM pool configuration file
	private function php_fpm_pool_delete ($data, $web_config) {
		global $app, $conf;

		if(trim($data['old']['fastcgi_php_version']) != '' && $data['old']['php'] == 'php-fpm'){
			$default_php_fpm = false;
			list($custom_php_fpm_name, $custom_php_fpm_init_script, $custom_php_fpm_ini_dir, $custom_php_fpm_pool_dir) = explode(':', trim($data['old']['fastcgi_php_version']));
			if(substr($custom_php_fpm_ini_dir, -1) != '/') $custom_php_fpm_ini_dir .= '/';
		} else {
			$default_php_fpm = true;
		}

		if($default_php_fpm){
			$pool_dir = escapeshellcmd($web_config['php_fpm_pool_dir']);
		} else {
			$pool_dir = $custom_php_fpm_pool_dir;
		}

		if(substr($pool_dir, -1) != '/') $pool_dir .= '/';
		$pool_name = 'web'.$data['old']['domain_id'];

		if ( @is_file($pool_dir.$pool_name.'.conf') ) {
			$app->system->unlink($pool_dir.$pool_name.'.conf');
			$app->log('Removed PHP-FPM config file: '.$pool_dir.$pool_name.'.conf', LOGLEVEL_DEBUG);

			//$app->services->restartService('php-fpm','reload');
		}

		// delete pool in all other PHP versions
		$default_pool_dir = escapeshellcmd($web_config['php_fpm_pool_dir']);
		if(substr($default_pool_dir, -1) != '/') $default_pool_dir .= '/';
		if($default_pool_dir != $pool_dir){
			if ( @is_file($default_pool_dir.$pool_name.'.conf') ) {
				$app->system->unlink($default_pool_dir.$pool_name.'.conf');
				$app->log('Removed PHP-FPM config file: '.$default_pool_dir.$pool_name.'.conf', LOGLEVEL_DEBUG);
				$app->services->restartService('php-fpm', 'reload:'.$conf['init_scripts'].'/'.$web_config['php_fpm_init_script']);
			}
		}
		$php_versions = $app->db->queryAllRecords("SELECT * FROM server_php WHERE php_fpm_init_script != '' AND php_fpm_ini_dir != '' AND php_fpm_pool_dir != '' AND server_id = ".$data['old']['server_id']);
		if(is_array($php_versions) && !empty($php_versions)){
			foreach($php_versions as $php_version){
				if(substr($php_version['php_fpm_pool_dir'], -1) != '/') $php_version['php_fpm_pool_dir'] .= '/';
				if($php_version['php_fpm_pool_dir'] != $pool_dir){
					if ( @is_file($php_version['php_fpm_pool_dir'].$pool_name.'.conf') ) {
						$app->system->unlink($php_version['php_fpm_pool_dir'].$pool_name.'.conf');
						$app->log('Removed PHP-FPM config file: '.$php_version['php_fpm_pool_dir'].$pool_name.'.conf', LOGLEVEL_DEBUG);
						$app->services->restartService('php-fpm', 'reload:'.$php_version['php_fpm_init_script']);
					}
				}
			}
		}

		// Reload current PHP-FPM after all others
		sleep(1);
		if(!$default_php_fpm){
			$app->services->restartService('php-fpm', 'reload:'.$custom_php_fpm_init_script);
		} else {
			$app->services->restartService('php-fpm', 'reload:'.$conf['init_scripts'].'/'.$web_config['php_fpm_init_script']);
		}
	}

	function client_delete($event_name, $data) {
		global $app, $conf;

		$app->uses("getconf");
		$web_config = $app->getconf->get_server_config($conf["server_id"], 'web');

		$client_id = intval($data['old']['client_id']);
		if($client_id > 0) {

			$client_dir = $web_config['website_basedir'].'/clients/client'.$client_id;
			if(is_dir($client_dir) && !stristr($client_dir, '..')) {
				// remove symlinks from $client_dir
				$files = array_diff(scandir($client_dir), array('.', '..'));
				if(is_array($files) && !empty($files)){
					foreach($files as $file){
						if(is_link($client_dir.'/'.$file)){
							unlink($client_dir.'/'.$file);
							$app->log('Removed symlink: '.$client_dir.'/'.$file, LOGLEVEL_DEBUG);
						}
					}
				}

				@rmdir($client_dir);
				$app->log('Removed client directory: '.$client_dir, LOGLEVEL_DEBUG);
			}

			if($app->system->is_group('client'.$client_id)){
				$this->_exec('groupdel client'.$client_id);
				$app->log('Removed group client'.$client_id, LOGLEVEL_DEBUG);
			}
		}

	}

	//* Wrapper for exec function for easier debugging
	private function _exec($command) {
		global $app;
		$app->log('exec: '.$command, LOGLEVEL_DEBUG);
		exec($command);
	}

	private function _checkTcp ($host, $port) {

		$fp = @fsockopen($host, $port, $errno, $errstr, 2);

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