apache2_plugin.inc.php

				}
				*/
				// we are deleting the parent domain, so we can delete everything in the log directory
				$subdomain_hosts = array();
				$files = array_diff(scandir($data['old']['document_root'].'/'.$log_folder), array('.', '..'));
				if(is_array($files) && !empty($files)){
					foreach($files as $file){
						if(is_dir($data['old']['document_root'].'/'.$log_folder.'/'.$file)){
							$subdomain_hosts[] = $file;
						}
					}
				}
			}
			if(is_array($subdomain_hosts) && !empty($subdomain_hosts)){
				$log_folders = array();
				foreach($subdomain_hosts as $subdomain_host){
					$log_folders[] = $log_folder.'/'.$subdomain_host;
				}
			} else {
				if($subdomain_host == '') $subdomain_host = 'web'.$data['old']['domain_id'];
				$log_folder .= '/' . $subdomain_host;
			}
			$web_folder = $data['old']['web_folder'];
			unset($tmp);
			unset($subdomain_hosts);
		}

		if($data['old']['type'] == 'vhost' || $data['old']['type'] == 'vhostsubdomain' || $data['old']['type'] == 'vhostalias'){
			if(is_array($log_folders) && !empty($log_folders)){
				foreach($log_folders as $log_folder){
					//if($app->system->is_mounted($data['old']['document_root'].'/'.$log_folder)) exec('umount '.escapeshellarg($data['old']['document_root'].'/'.$log_folder));
					//exec('fuser -km '.escapeshellarg($data['old']['document_root'].'/'.$log_folder).' 2>/dev/null');
					exec('umount '.escapeshellarg($data['old']['document_root'].'/'.$log_folder).' 2>/dev/null');
				}
			} else {
				//if($app->system->is_mounted($data['old']['document_root'].'/'.$log_folder)) exec('umount '.escapeshellarg($data['old']['document_root'].'/'.$log_folder));
				//exec('fuser -km '.escapeshellarg($data['old']['document_root'].'/'.$log_folder).' 2>/dev/null');
				exec('umount '.escapeshellarg($data['old']['document_root'].'/'.$log_folder).' 2>/dev/null');
			}
			
			// remove letsencrypt if it exists (renew will always fail otherwise)
			
			$old_domain = $data['old']['domain'];
			if(substr($old_domain, 0, 2) === '*.') {
				// wildcard domain not yet supported by letsencrypt!
				$old_domain = substr($old_domain, 2);
			}
			$le_conf_file = '/etc/letsencrypt/renewal/' . $old_domain . '.conf';
			@rename('/etc/letsencrypt/renewal/' . $old_domain . '.conf', '/etc/letsencrypt/renewal/' . $old_domain . '.conf~backup');
		}

		//* remove mountpoint from fstab
		if(is_array($log_folders) && !empty($log_folders)){
			foreach($log_folders as $log_folder){
				$fstab_line = '/var/log/ispconfig/httpd/'.$data['old']['domain'].' '.$data['old']['document_root'].'/'.$log_folder.'    none    bind';
				$app->system->removeLine('/etc/fstab', $fstab_line);
			}
		} else {
			$fstab_line = '/var/log/ispconfig/httpd/'.$data['old']['domain'].' '.$data['old']['document_root'].'/'.$log_folder.'    none    bind';
			$app->system->removeLine('/etc/fstab', $fstab_line);
		}
		unset($log_folders);

		if($data['old']['type'] != 'vhost' && $data['old']['type'] != 'vhostsubdomain' && $data['old']['type'] != 'vhostalias' && $data['old']['parent_domain_id'] > 0) {
			//* This is a alias domain or subdomain, so we have to update the website instead
			$parent_domain_id = intval($data['old']['parent_domain_id']);
			$tmp = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ? AND active = 'y'", $parent_domain_id);
			$data['new'] = $tmp;
			$data['old'] = $tmp;
			$this->action = 'update';
			$this->update_letsencrypt = true;
			// just run the update function
			$this->update($event_name, $data);

		} else {
			//* This is a website
			// Deleting the vhost file, symlink and the data directory
			$vhost_file = escapeshellcmd($web_config['vhost_conf_dir'].'/'.$data['old']['domain'].'.vhost');

			$vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/'.$data['old']['domain'].'.vhost');
			if(is_link($vhost_symlink)){
				$app->system->unlink($vhost_symlink);
				$app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file, LOGLEVEL_DEBUG);
			}
			$vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/900-'.$data['old']['domain'].'.vhost');
			if(is_link($vhost_symlink)){
				$app->system->unlink($vhost_symlink);
				$app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file, LOGLEVEL_DEBUG);
			}
			$vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/100-'.$data['old']['domain'].'.vhost');
			if(is_link($vhost_symlink)){
				$app->system->unlink($vhost_symlink);
				$app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file, LOGLEVEL_DEBUG);
			}

			$app->system->unlink($vhost_file);
			$app->log('Removing vhost file: '.$vhost_file, LOGLEVEL_DEBUG);

			if($data['old']['type'] == 'vhost' || $data['old']['type'] == 'vhostsubdomain' || $data['old']['type'] == 'vhostalias') {
				$docroot = escapeshellcmd($data['old']['document_root']);
				if($docroot != '' && !stristr($docroot, '..')) {
					if($data['old']['type'] == 'vhost') {
						// this is a vhost - we delete everything in here.
						exec('rm -rf '.$docroot);
					} elseif(!stristr($data['old']['web_folder'], '..')) {
						// this is a vhost subdomain
						// IMPORTANT: do some folder checks before we delete this!
						$do_delete = true;
						$delete_folder = preg_replace('/[\/]{2,}/', '/', $web_folder); // replace / occuring multiple times
						if(substr($delete_folder, 0, 1) === '/') $delete_folder = substr($delete_folder, 1);
						if(substr($delete_folder, -1) === '/') $delete_folder = substr($delete_folder, 0, -1);

						$path_elements = explode('/', $delete_folder);

						if($path_elements[0] == 'web' || $path_elements[0] === '') {
							// paths beginning with /web should NEVER EVER be deleted, empty paths should NEVER occur - but for safety reasons we check it here!
							// we use strict check as otherwise directories named '0' may not be deleted
							$do_delete = false;
						} else {
							// read all vhost subdomains and alias with same parent domain
							$used_paths = array();
							$tmp = $app->db->queryAllRecords("SELECT `web_folder` FROM web_domain WHERE (type = 'vhostsubdomain' OR type = 'vhostalias') AND parent_domain_id = ? AND domain_id != ?", $data['old']['parent_domain_id'], $data['old']['domain_id']);
							foreach($tmp as $tmprec) {
								// we normalize the folder entries because we need to compare them
								$tmp_folder = preg_replace('/[\/]{2,}/', '/', $tmprec['web_folder']); // replace / occuring multiple times
								if(substr($tmp_folder, 0, 1) === '/') $tmp_folder = substr($tmp_folder, 1);
								if(substr($tmp_folder, -1) === '/') $tmp_folder = substr($tmp_folder, 0, -1);

								// add this path and it's parent paths to used_paths array
								while(strpos($tmp_folder, '/') !== false) {
									if(in_array($tmp_folder, $used_paths) == false) $used_paths[] = $tmp_folder;
									$tmp_folder = substr($tmp_folder, 0, strrpos($tmp_folder, '/'));
								}
								if(in_array($tmp_folder, $used_paths) == false) $used_paths[] = $tmp_folder;
							}
							unset($tmp);

							// loop and check if the path is still used and stop at first used one
							// set do_delete to false so nothing gets deleted if the web_folder itself is still used
							$do_delete = false;
							while(count($path_elements) > 0) {
								$tmp_folder = implode('/', $path_elements);
								if(in_array($tmp_folder, $used_paths) == true) break;

								// this path is not used - set it as path to delete, strip the last element from the array and set do_delete to true
								$delete_folder = $tmp_folder;
								$do_delete = true;
								array_pop($path_elements);
							}
							unset($tmp_folder);
							unset($used_paths);
						}

						if($do_delete === true && $delete_folder !== '') exec('rm -rf '.$docroot.'/'.$delete_folder);

						unset($delete_folder);
						unset($path_elements);
					}
				}

				//remove the php fastgi starter script if available
				if ($data['old']['php'] == 'fast-cgi') {
					$fastcgi_starter_path = str_replace('[system_user]', $data['old']['system_user'], $fastcgi_config['fastcgi_starter_path']);
					if($data['old']['type'] == 'vhost') {
						if (is_dir($fastcgi_starter_path)) {
							exec('rm -rf '.$fastcgi_starter_path);
						}
					} else {
						$fcgi_starter_script = $fastcgi_starter_path.$fastcgi_config['fastcgi_starter_script'].'_web'.$data['old']['domain_id'];
						if (file_exists($fcgi_starter_script)) {
							exec('rm -f '.$fcgi_starter_script);
						}
					}
				}

				// remove PHP-FPM pool
				if ($data['old']['php'] == 'php-fpm') {
					$this->php_fpm_pool_delete($data, $web_config);
				} elseif($data['old']['php'] == 'hhvm') {
					$this->hhvm_update($data, $web_config);
				}

				//remove the php cgi starter script if available
				if ($data['old']['php'] == 'cgi') {
					// TODO: fetch the date from the server-settings
					$web_config['cgi_starter_path'] = $web_config['website_basedir'].'/php-cgi-scripts/[system_user]/';

					$cgi_starter_path = str_replace('[system_user]', $data['old']['system_user'], $web_config['cgi_starter_path']);
					if($data['old']['type'] == 'vhost') {
						if (is_dir($cgi_starter_path)) {
							exec('rm -rf '.$cgi_starter_path);
						}
					} else {
						$cgi_starter_script = $cgi_starter_path.'php-cgi-starter_web'.$data['old']['domain_id'];
						if (file_exists($cgi_starter_script)) {
							exec('rm -f '.$cgi_starter_script);
						}
					}
				}

				$app->log('Removing website: '.$docroot, LOGLEVEL_DEBUG);

				// Delete the symlinks for the sites
				$client = $app->db->queryOneRecord('SELECT client_id FROM sys_group WHERE sys_group.groupid = ?', $data['old']['sys_groupid']);
				$client_id = intval($client['client_id']);
				unset($client);
				$tmp_symlinks_array = explode(':', $web_config['website_symlinks']);
				if(is_array($tmp_symlinks_array)) {
					foreach($tmp_symlinks_array as $tmp_symlink) {
						$tmp_symlink = str_replace('[client_id]', $client_id, $tmp_symlink);
						$tmp_symlink = str_replace('[website_domain]', $data['old']['domain'], $tmp_symlink);
						// Remove trailing slash
						if(substr($tmp_symlink, -1, 1) == '/') $tmp_symlink = substr($tmp_symlink, 0, -1);
						// delete the symlink
						if(is_link($tmp_symlink)) {
							$app->system->unlink($tmp_symlink);
							$app->log('Removing symlink: '.$tmp_symlink, LOGLEVEL_DEBUG);
						}
					}
				}
				// end removing symlinks
			}

			// Delete the log file directory
			$vhost_logfile_dir = escapeshellcmd('/var/log/ispconfig/httpd/'.$data['old']['domain']);
			if($data['old']['domain'] != '' && !stristr($vhost_logfile_dir, '..')) exec('rm -rf '.$vhost_logfile_dir);
			$app->log('Removing website logfile directory: '.$vhost_logfile_dir, LOGLEVEL_DEBUG);

			if($data['old']['type'] == 'vhost') {
				//delete the web user
				$command = 'killall -u '.escapeshellcmd($data['old']['system_user']).' ; userdel';
				$command .= ' '.escapeshellcmd($data['old']['system_user']);
				exec($command);
				if($apache_chrooted) $app->system->_exec('chroot '.escapeshellcmd($web_config['website_basedir']).' '.$command);

			}

			//* Remove the awstats configuration file
			if($data['old']['stats_type'] == 'awstats') {
				$this->awstats_delete($data, $web_config);
			}

			if($data['old']['type'] == 'vhostsubdomain' || $data['old']['type'] == 'vhostalias') {
				$app->system->web_folder_protection($parent_web_document_root, true);
			}

			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'];
				$mount_backup = true;
				if($server_config['backup_dir'] != '' && $server_config['backup_delete'] == 'y') {
					//* mount backup directory, if necessary
					if( $server_config['backup_dir_is_mount'] == 'y' && !$app->system->mount_backup_dir($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 = ? AND parent_domain_id = ? AND filename LIKE ?";
						$app->db->query($sql, $conf['server_id'], $data_old['domain_id'], "web".$data_old['domain_id']."_%");
						if($app->db->dbHost != $app->dbmaster->dbHost) $app->dbmaster->query($sql, $conf['server_id'], $data_old['domain_id'], "web".$data_old['domain_id']."_%");

						$app->log('Deleted the web backup files', LOGLEVEL_DEBUG);
					}
				}
			}
		}
		if($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 or when anon_ip setting is altered
	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());
		$tpl->setVar('logging', $web_config['logging']);
		$records = $app->db->queryAllRecords("SELECT * FROM server_ip WHERE server_id = ? AND virtualhost = 'y'", $conf['server_id']);

		$records_out= array();
		if(is_array($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 = ?", $folder_id);
		$website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ?", $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', 0751);
			$app->system->chown($folder_path.'.htpasswd', $website['system_user']);
			$app->system->chgrp($folder_path.'.htpasswd', $website['system_group']);
			$app->log('Created file '.$folder_path.'.htpasswd', LOGLEVEL_DEBUG);
		}

		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', 0751);
		$app->system->chown($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 = ?", $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 = ?", $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', 0751);
			$app->system->chown($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', 0751);
				$app->system->chown($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
			*/
			//$app->system->_exec('chown ' . $user . ':' . $group . ' ' . escapeshellcmd($documentRoot . '/webdav/'));
			//$app->system->_exec('chmod 770 ' . escapeshellcmd($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)
			*/
			//$app->system->_exec('chown ' . $user . ':' . $group . ' ' . escapeshellcmd($webdav_user_dir.' -R'));
			//$app->system->_exec('chmod 770 ' . escapeshellcmd($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";
							$output .= "        AuthType Digest\n";
							if($fn != '' && $fn != '/') {
								$output .= "        AuthName \"" . $fn . "\"\n";
							} else {
								$output .= "        AuthName \"Restricted Area\"\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);
		}
	}

	private function hhvm_update($data, $web_config) {
		global $app, $conf;
		
		if(file_exists($conf['rootpath'] . '/conf-custom/hhvm_starter.master')) {
			$content = file_get_contents($conf['rootpath'] . '/conf-custom/hhvm_starter.master');
		} else {
			$content = file_get_contents($conf['rootpath'] . '/conf/hhvm_starter.master');
		}
		if(file_exists($conf['rootpath'] . '/conf-custom/hhvm_monit.master')) {
			$monit_content = file_get_contents($conf['rootpath'] . '/conf-custom/hhvm_monit.master');
		} else {
			$monit_content = file_get_contents($conf['rootpath'] . '/conf/hhvm_monit.master');
		}
		
		if($data['new']['php'] == 'hhvm' && $data['old']['php'] != 'hhvm' || ($data['new']['php'] == 'hhvm' && isset($data['old']['custom_php_ini']) && $data['new']['custom_php_ini'] != $data['old']['custom_php_ini'])) {

			// Custom php.ini settings
			$custom_php_ini_settings = trim($data['new']['custom_php_ini']);
			if(intval($data['new']['directive_snippets_id']) > 0){
				$snippet = $app->db->queryOneRecord("SELECT * FROM directive_snippets WHERE directive_snippets_id = ? AND type = 'apache' AND active = 'y' AND customer_viewable = 'y'", intval($data['new']['directive_snippets_id']));
				if(isset($snippet['required_php_snippets']) && trim($snippet['required_php_snippets']) != ''){
					$required_php_snippets = explode(',', trim($snippet['required_php_snippets']));
					if(is_array($required_php_snippets) && !empty($required_php_snippets)){
						foreach($required_php_snippets as $required_php_snippet){
							$required_php_snippet = intval($required_php_snippet);
							if($required_php_snippet > 0){
								$php_snippet = $app->db->queryOneRecord("SELECT * FROM directive_snippets WHERE ".($snippet['master_directive_snippets_id'] > 0 ? 'master_' : '')."directive_snippets_id = ? AND type = 'php' AND active = 'y'", $required_php_snippet);
								$php_snippet['snippet'] = trim($php_snippet['snippet']);
								if($php_snippet['snippet'] != ''){
									$custom_php_ini_settings .= "\n".$php_snippet['snippet'];
								}
							}
						}
					}
				}
			}
			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", $custom_php_ini_settings);
				if(@is_dir('/etc/hhvm')) file_put_contents('/etc/hhvm/'.$data['new']['system_user'].'.ini', $custom_php_ini_settings);
			} else {
				if($data['old']['system_user'] != '' && is_file('/etc/hhvm/'.$data['old']['system_user'].'.ini')) unlink('/etc/hhvm/'.$data['old']['system_user'].'.ini');
			}