Database quota fix % lost in change

Pascal Dreissen

2016-07-08 f1193b43f4c9fd132741d30f03f0b35841011989

 server/plugins-available/shelluser_jailkit_plugin.inc.php

@@ -1,7 +1,7 @@
<?php

/*
Copyright (c) 2008, Till Brehm, projektfarm Gmbh
Copyright (c) 2007, Till Brehm, projektfarm Gmbh
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
@@ -29,165 +29,562 @@
*/

class shelluser_jailkit_plugin {
	

   //* $plugin_name and $class_name have to be the same then the name of this class
   var $plugin_name = 'shelluser_jailkit_plugin';
   var $class_name = 'shelluser_jailkit_plugin';
	
		
   var $min_uid = 499;

   //* This function is called during ispconfig installation to determine
   //  if a symlink shall be created for this plugin.
   function onInstall() {
      global $conf;

      if($conf['services']['web'] == true) {
         return true;
      } else {
         return false;
      }

   }


   /*
       This function is called when the plugin is loaded
   */
	

   function onLoad() {
      global $app;
		

      /*
      Register for the events
      */
      
      $app->plugins->registerEvent('shell_user_insert',$this->plugin_name,'insert');
      $app->plugins->registerEvent('shell_user_update',$this->plugin_name,'update');
      $app->plugins->registerEvent('shell_user_delete',$this->plugin_name,'delete');
      $app->plugins->registerEvent('shell_user_insert', $this->plugin_name, 'insert');
      $app->plugins->registerEvent('shell_user_update', $this->plugin_name, 'update');
      $app->plugins->registerEvent('shell_user_delete', $this->plugin_name, 'delete');
		

		
   }
	

   //* This function is called, when a shell user is inserted in the database
   function insert($event_name,$data) {
   function insert($event_name, $data) {
      global $app, $conf;

      $app->uses('system,getconf');
      
      /**
       * Setup Jailkit Chroot System If Enabled 
       */
      if ($data['new']['chroot'] == "jailkit")
      {
         // load the server configuration options
         $app->uses("getconf");
         $this->data = $data;
         $this->app = $app;
         $this->jailkit_config = $app->getconf->get_server_config($conf["server_id"], 'jailkit');
			
         $this->_setup_jailkit_chroot();
         $this->_add_jailkit_user();
      $security_config = $app->getconf->get_security_config('permissions');
      if($security_config['allow_shell_user'] != 'yes') {
         $app->log('Shell user plugin disabled by security settings.',LOGLEVEL_WARN);
         return false;
      }
      
      $app->log("Jalikit Plugin -> insert username:".$data['new']['username'],LOGLEVEL_DEBUG);
      
      $web = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ?", $data['new']['parent_domain_id']);

      if(!$app->system->is_allowed_user($data['new']['username'], false, false)
         || !$app->system->is_allowed_user($data['new']['puser'], true, true)
         || !$app->system->is_allowed_group($data['new']['pgroup'], true, true)) {
         $app->log('Shell user must not be root or in group root.',LOGLEVEL_WARN);
         return false;
      }

      if($app->system->is_user($data['new']['puser'])) {
         // Get the UID of the parent user
         $uid = intval($app->system->getuid($data['new']['puser']));
         if($uid > $this->min_uid) {
			
            if($app->system->is_user($data['new']['username'])) {

               /**
               * Setup Jailkit Chroot System If Enabled
               */

               if ($data['new']['chroot'] == "jailkit")
               {


                  // load the server configuration options
                  $app->uses("getconf");
                  $this->data = $data;
                  $this->app = $app;
                  $this->jailkit_config = $app->getconf->get_server_config($conf["server_id"], 'jailkit');

                  $this->_update_website_security_level();

                  $app->system->web_folder_protection($web['document_root'], false);

                  $this->_setup_jailkit_chroot();

                  $this->_add_jailkit_user();

                  //* call the ssh-rsa update function
                  $this->_setup_ssh_rsa();

                  //$command .= 'usermod -s /usr/sbin/jk_chrootsh -U '.escapeshellcmd($data['new']['username']);
                  //exec($command);
                  $app->system->usermod($data['new']['username'], 0, 0, '', '/usr/sbin/jk_chrootsh', '', '');

                  //* Unlock user
                  $command = 'usermod -U '.escapeshellcmd($data['new']['username']).' 2>/dev/null';
                  exec($command);

                  $this->_update_website_security_level();
                  $app->system->web_folder_protection($web['document_root'], true);
               }

               $app->log("Jailkit Plugin -> insert username:".$data['new']['username'], LOGLEVEL_DEBUG);

            } else {
               $app->log("Jailkit Plugin -> insert username:".$data['new']['username']." skipped, the user does not exist.", LOGLEVEL_WARN);
            }
         } else {
            $app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.", LOGLEVEL_ERROR);
         }
      } else {
         $app->log("Skipping insertion of user:".$data['new']['username'].", parent user ".$data['new']['puser']." does not exist.", LOGLEVEL_WARN);
      }

   }
	

   //* This function is called, when a shell user is updated in the database
   function update($event_name,$data) {
   function update($event_name, $data) {
      global $app, $conf;

      $app->uses('system,getconf');
      
      /**
       * Setup Jailkit Chroot System If Enabled 
       */
      if ($data['new']['chroot'] == "jailkit")
      {
         // load the server configuration options
         $app->uses("getconf");
         $this->data = $data;
         $this->app = $app;
         $this->jailkit_config = $app->getconf->get_server_config($conf["server_id"], 'jailkit');
			
         $this->_setup_jailkit_chroot();
         $this->_add_jailkit_user();
      $security_config = $app->getconf->get_security_config('permissions');
      if($security_config['allow_shell_user'] != 'yes') {
         $app->log('Shell user plugin disabled by security settings.',LOGLEVEL_WARN);
         return false;
      }
      
      $app->log("Jalikit Plugin -> update username:".$data['new']['username'],LOGLEVEL_DEBUG);
		
      $web = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ?", $data['new']['parent_domain_id']);

      if(!$app->system->is_allowed_user($data['new']['username'], false, false)
         || !$app->system->is_allowed_user($data['new']['puser'], true, true)
         || !$app->system->is_allowed_group($data['new']['pgroup'], true, true)) {
         $app->log('Shell user must not be root or in group root.',LOGLEVEL_WARN);
         return false;
      }

      if($app->system->is_user($data['new']['puser'])) {
         // Get the UID of the parent user
         $uid = intval($app->system->getuid($data['new']['puser']));
         if($uid > $this->min_uid) {
			
			
            if($app->system->is_user($data['new']['username'])) {

               /**
               * Setup Jailkit Chroot System If Enabled
               */
               if ($data['new']['chroot'] == "jailkit")
               {

                  // load the server configuration options
                  $app->uses("getconf");
                  $this->data = $data;
                  $this->app = $app;
                  $this->jailkit_config = $app->getconf->get_server_config($conf["server_id"], 'jailkit');

                  $this->_update_website_security_level();

                  $app->system->web_folder_protection($web['document_root'], false);

                  $this->_setup_jailkit_chroot();
                  $this->_add_jailkit_user();

                  //* call the ssh-rsa update function
                  $this->_setup_ssh_rsa();

                  $this->_update_website_security_level();

                  $app->system->web_folder_protection($web['document_root'], true);
               }

               $app->log("Jailkit Plugin -> update username:".$data['new']['username'], LOGLEVEL_DEBUG);

            } else {
               $app->log("Jailkit Plugin -> update username:".$data['new']['username']." skipped, the user does not exist.", LOGLEVEL_WARN);
            }
         } else {
            $app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.", LOGLEVEL_ERROR);
         }
      } else {
         $app->log("Skipping update for user:".$data['new']['username'].", parent user ".$data['new']['puser']." does not exist.", LOGLEVEL_WARN);
      }

   }
	

   //* This function is called, when a shell user is deleted in the database
   function delete($event_name,$data) {
   /**
    * TODO: Remove chroot user home and from the chroot passwd file
    */
   function delete($event_name, $data) {
      global $app, $conf;

      $app->uses('system,getconf');
      
      $security_config = $app->getconf->get_security_config('permissions');
      if($security_config['allow_shell_user'] != 'yes') {
         $app->log('Shell user plugin disabled by security settings.',LOGLEVEL_WARN);
         return false;
      }

      $web = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ?", $data['old']['parent_domain_id']);

      if ($data['old']['chroot'] == "jailkit")
      {
         $app->uses("getconf");
         $this->jailkit_config = $app->getconf->get_server_config($conf["server_id"], 'jailkit');
			

         $jailkit_chroot_userhome = $this->_get_home_dir($data['old']['username']);

         //commented out proved to be dangerous on config errors
         //exec('rm -rf '.$data['old']['dir'].$jailkit_chroot_userhome);

         $app->system->web_folder_protection($web['document_root'], false);
         
         exec('rm -rf '.$data['old']['dir'].$jailkit_chroot_userhome);
         $userid = intval($app->system->getuid($data['old']['username']));
         $command = 'killall -u '.escapeshellcmd($data['old']['username']).' ; ';
         $command .= 'userdel -f '.escapeshellcmd($data['old']['username']).' &> /dev/null';
         exec($command);
         
			
         $app->log("Jalikit Plugin -> delete chroot home:".$data['old']['dir'].$jailkit_chroot_userhome,LOGLEVEL_DEBUG);
         // Remove the jailed user from passwd and shadow file inside the jail
         $app->system->removeLine($data['old']['dir'].'/etc/passwd', $data['old']['username']);
         $app->system->removeLine($data['old']['dir'].'/etc/shadow', $data['old']['username']);

         if(@is_dir($data['old']['dir'].$jailkit_chroot_userhome)) {
            $this->_delete_homedir($data['old']['dir'].$jailkit_chroot_userhome,$userid,$data['old']['parent_domain_id']);
				
            $app->log("Jailkit Plugin -> delete chroot home:".$data['old']['dir'].$jailkit_chroot_userhome, LOGLEVEL_DEBUG);
         }

         $app->system->web_folder_protection($web['document_root'], true);

      }
		
      $app->log("Jalikit Plugin -> delete username:".$data['old']['username'],LOGLEVEL_DEBUG);
		
		

      $app->log("Jailkit Plugin -> delete username:".$data['old']['username'], LOGLEVEL_DEBUG);


   }
	

   function _setup_jailkit_chroot()
   {
         //check if the chroot environment is created yet if not create it with a list of program sections from the config
         if (!is_dir($this->data['new']['dir'].'/etc/jailkit'))
         {
            $command = '/usr/local/ispconfig/server/scripts/create_jailkit_chroot.sh';
            $command .= ' '.escapeshellcmd($this->data['new']['dir']);
            $command .= ' \''.$this->jailkit_config['jailkit_chroot_app_sections'].'\'';
            exec($command);
				
            $this->app->log("Added jailkit chroot with command: ".$command,LOGLEVEL_DEBUG);
				
            $this->_add_jailkit_programs();
				
				
         }
      global $app;

      //check if the chroot environment is created yet if not create it with a list of program sections from the config
      if (!is_dir($this->data['new']['dir'].'/etc/jailkit'))
      {
         $command = '/usr/local/ispconfig/server/scripts/create_jailkit_chroot.sh';
         $command .= ' '.escapeshellcmd($this->data['new']['dir']);
         $command .= ' \''.$this->jailkit_config['jailkit_chroot_app_sections'].'\'';
         exec($command.' 2>/dev/null');

         $this->app->log("Added jailkit chroot with command: ".$command, LOGLEVEL_DEBUG);

         $this->_add_jailkit_programs();

         //add bash.bashrc script
         //we need to collect the domain name to be used as the HOSTNAME in the bashrc script
         $web = $this->app->db->queryOneRecord("SELECT domain FROM web_domain WHERE domain_id = ?", $this->data['new']["parent_domain_id"]);

         $this->app->load('tpl');

         $tpl = new tpl();
         $tpl->newTemplate("bash.bashrc.master");

         $tpl->setVar('jailkit_chroot', true);
         $tpl->setVar('domain', $web['domain']);
         $tpl->setVar('home_dir', $this->_get_home_dir(""));

         $bashrc = escapeshellcmd($this->data['new']['dir']).'/etc/bash.bashrc';
         if(@is_file($bashrc) || @is_link($bashrc)) unlink($bashrc);

         file_put_contents($bashrc, $tpl->grab());
         unset($tpl);

         $this->app->log("Added bashrc script: ".$bashrc, LOGLEVEL_DEBUG);

         $tpl = new tpl();
         $tpl->newTemplate("motd.master");

         $tpl->setVar('domain', $web['domain']);

         $motd = escapeshellcmd($this->data['new']['dir']).'/var/run/motd';
         if(@is_file($motd) || @is_link($motd)) unlink($motd);

         $app->system->file_put_contents($motd, $tpl->grab());

      }
   }
	

   function _add_jailkit_programs()
   {
      //copy over further programs and its libraries
      $command = '/usr/local/ispconfig/server/scripts/create_jailkit_programs.sh';
      $command .= ' '.escapeshellcmd($this->data['new']['dir']);
      $command .= ' \''.$this->jailkit_config['jailkit_chroot_app_programs'].'\'';
      exec($command);
		
      $this->app->log("Added programs to jailkit chroot with command: ".$command,LOGLEVEL_DEBUG);
      $jailkit_chroot_app_programs = preg_split("/[\s,]+/", $this->jailkit_config['jailkit_chroot_app_programs']);
      if(is_array($jailkit_chroot_app_programs) && !empty($jailkit_chroot_app_programs)){
         foreach($jailkit_chroot_app_programs as $jailkit_chroot_app_program){
            $jailkit_chroot_app_program = trim($jailkit_chroot_app_program);
            if(is_file($jailkit_chroot_app_program) || is_dir($jailkit_chroot_app_program)){			
               //copy over further programs and its libraries
               $command = '/usr/local/ispconfig/server/scripts/create_jailkit_programs.sh';
               $command .= ' '.escapeshellcmd($this->data['new']['dir']);
               $command .= ' '.$jailkit_chroot_app_program;
               exec($command.' 2>/dev/null');

               $this->app->log("Added programs to jailkit chroot with command: ".$command, LOGLEVEL_DEBUG);
            }
         }
      }
   }
	

   function _get_home_dir($username)
   {
      return str_replace("[username]",escapeshellcmd($username),$this->jailkit_config["jailkit_chroot_home"]);
      return str_replace("[username]", escapeshellcmd($username), $this->jailkit_config['jailkit_chroot_home']);
   }
	

   function _add_jailkit_user()
   {
         //add the user to the chroot
         $jailkit_chroot_userhome = $this->_get_home_dir($this->data['new']['username']);
         $jailkit_chroot_puserhome = $this->_get_home_dir($this->data['new']['puser']);
			
         if (!is_dir($this->data['new']['dir'].$jailkit_chroot_userhome))
         {
            $command = '/usr/local/ispconfig/server/scripts/create_jailkit_user.sh';
            $command .= ' '.escapeshellcmd($this->data['new']['username']);
            $command .= ' '.escapeshellcmd($this->data['new']['dir']);
            $command .= ' '.$jailkit_chroot_userhome;
            $command .= ' '.escapeshellcmd($this->data['new']['shell']);
            $command .= ' '.$this->data['new']['puser'];
            $command .= ' '.$jailkit_chroot_puserhome;
            exec($command);
				
            $this->app->log("Added jailkit user to chroot with command: ".$command,LOGLEVEL_DEBUG);
				
            exec("mkdir -p ".$this->data['new']['dir'].$jailkit_chroot_userhome);
            exec("chown ".$this->data['new']['username'].":".$this->data['new']['pgroup']." ".$this->data['new']['dir'].$jailkit_chroot_userhome);
				
            $this->app->log("Added created jailkit user home in : ".$this->data['new']['dir'].$jailkit_chroot_userhome,LOGLEVEL_DEBUG);
				
            exec("mkdir -p ".$this->data['new']['dir'].$jailkit_chroot_puserhome);
            exec("chown ".$this->data['new']['puser'].":".$this->data['new']['pgroup']." ".$this->data['new']['dir'].$jailkit_chroot_puserhome);
				
            $this->app->log("Added created jailkit parent user home in : ".$this->data['new']['dir'].$jailkit_chroot_puserhome,LOGLEVEL_DEBUG);
         }	
      global $app;

      //add the user to the chroot
      $jailkit_chroot_userhome = $this->_get_home_dir($this->data['new']['username']);
      $jailkit_chroot_puserhome = $this->_get_home_dir($this->data['new']['puser']);

      if(!is_dir($this->data['new']['dir'].'/etc')) mkdir($this->data['new']['dir'].'/etc', 0755);
      if(!is_file($this->data['new']['dir'].'/etc/passwd')) touch($this->data['new']['dir'].'/etc/passwd', 0755);

      // IMPORTANT!
      // ALWAYS create the user. Even if the user was created before
      // if we check if the user exists, then a update (no shell -> jailkit) will not work
      // and the user has FULL ACCESS to the root of the server!
      $command = '/usr/local/ispconfig/server/scripts/create_jailkit_user.sh';
      $command .= ' '.escapeshellcmd($this->data['new']['username']);
      $command .= ' '.escapeshellcmd($this->data['new']['dir']);
      $command .= ' '.$jailkit_chroot_userhome;
      $command .= ' '.escapeshellcmd($this->data['new']['shell']);
      $command .= ' '.$this->data['new']['puser'];
      $command .= ' '.$jailkit_chroot_puserhome;
      exec($command.' 2>/dev/null');

      //* Change the homedir of the shell user and parent user
      //* We have to do this manually as the usermod command fails
      //* when the user is logged in or a command is running under that user
      /*
         $passwd_file_array = file('/etc/passwd');
         $passwd_out = '';
         if(is_array($passwd_file_array)) {
            foreach($passwd_file_array as $line) {
               $line = trim($line);
               $parts = explode(':',$line);
               if($parts[0] == $this->data['new']['username']) {
                  $parts[5] = escapeshellcmd($this->data['new']['dir'].'/.'.$jailkit_chroot_userhome);
                  $parts[6] = escapeshellcmd('/usr/sbin/jk_chrootsh');
                  $new_line = implode(':',$parts);
                  copy('/etc/passwd','/etc/passwd~');
                  chmod('/etc/passwd~',0600);
                  $app->uses('system');
                  $app->system->replaceLine('/etc/passwd',$line,$new_line,1,0);
               }
            }
         }*/

      $shell = '/usr/sbin/jk_chrootsh';
      if($this->data['new']['active'] != 'y') $shell = '/bin/false';
		
      $app->system->usermod($this->data['new']['username'], 0, 0, $this->data['new']['dir'].'/.'.$jailkit_chroot_userhome, $shell);
      $app->system->usermod($this->data['new']['puser'], 0, 0, $this->data['new']['dir'].'/.'.$jailkit_chroot_userhome, '/usr/sbin/jk_chrootsh');

      $this->app->log("Added jailkit user to chroot with command: ".$command, LOGLEVEL_DEBUG);

      if(!is_dir($this->data['new']['dir'].$jailkit_chroot_userhome)) mkdir(escapeshellcmd($this->data['new']['dir'].$jailkit_chroot_userhome), 0755, true);
      $app->system->chown(escapeshellcmd($this->data['new']['dir'].$jailkit_chroot_userhome), $this->data['new']['username']);
      $app->system->chgrp(escapeshellcmd($this->data['new']['dir'].$jailkit_chroot_userhome), $this->data['new']['pgroup']);

      $this->app->log("Added created jailkit user home in : ".$this->data['new']['dir'].$jailkit_chroot_userhome, LOGLEVEL_DEBUG);

      if(!is_dir($this->data['new']['dir'].$jailkit_chroot_puserhome)) mkdir(escapeshellcmd($this->data['new']['dir'].$jailkit_chroot_puserhome), 0755, true);
      $app->system->chown(escapeshellcmd($this->data['new']['dir'].$jailkit_chroot_puserhome), $this->data['new']['puser']);
      $app->system->chgrp(escapeshellcmd($this->data['new']['dir'].$jailkit_chroot_puserhome), $this->data['new']['pgroup']);

      $this->app->log("Added jailkit parent user home in : ".$this->data['new']['dir'].$jailkit_chroot_puserhome, LOGLEVEL_DEBUG);


   }

   //* Update the website root directory permissions depending on the security level
   function _update_website_security_level() {
      global $app, $conf;

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

      // Get the parent website of this shell user
      $web = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ?", $this->data['new']['parent_domain_id']);

      //* If the security level is set to high
      if($web_config['security_level'] == 20 && is_array($web)) {
         $app->system->web_folder_protection($web["document_root"], false);
         $app->system->chmod($web["document_root"], 0755);
         $app->system->chown($web["document_root"], 'root');
         $app->system->chgrp($web["document_root"], 'root');
         $app->system->web_folder_protection($web["document_root"], true);
      }

   }

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

   private function _setup_ssh_rsa() {
      global $app;
      $this->app->log("ssh-rsa setup shelluser_jailkit", LOGLEVEL_DEBUG);
      // Get the client ID, username, and the key
      $domain_data = $this->app->db->queryOneRecord('SELECT sys_groupid FROM web_domain WHERE web_domain.domain_id = ?', $this->data['new']['parent_domain_id']);
      $sys_group_data = $this->app->db->queryOneRecord('SELECT * FROM sys_group WHERE sys_group.groupid = ?', $domain_data['sys_groupid']);
      $id = intval($sys_group_data['client_id']);
      $username= $sys_group_data['name'];
      $client_data = $this->app->db->queryOneRecord('SELECT * FROM client WHERE client.client_id = ?', $id);
      $userkey = $client_data['ssh_rsa'];
      unset($domain_data);
      unset($client_data);

      // ssh-rsa authentication variables
      $sshrsa = $this->data['new']['ssh_rsa'];
      $usrdir = escapeshellcmd($this->data['new']['dir']).'/'.$this->_get_home_dir($this->data['new']['username']);
      $sshdir = $usrdir.'/.ssh';
      $sshkeys= $usrdir.'/.ssh/authorized_keys';

      $app->uses('file');
      $sshrsa = $app->file->unix_nl($sshrsa);
      $sshrsa = $app->file->remove_blank_lines($sshrsa, 0);

      // If this user has no key yet, generate a pair
      if ($userkey == '' && $id > 0){
         //Generate ssh-rsa-keys
         exec('ssh-keygen -t rsa -C '.$username.'-rsa-key-'.time().' -f /tmp/id_rsa -N ""');

         // use the public key that has been generated
         $userkey = $app->system->file_get_contents('/tmp/id_rsa.pub');

         // save keypair in client table
         $this->app->db->query("UPDATE client SET created_at = UNIX_TIMESTAMP(), id_rsa = ? ssh_rsa = ? WHERE client_id = ?", $app->system->file_get_contents('/tmp/id_rsa'), $userkey, $id);

         $app->system->unlink('/tmp/id_rsa');
         $app->system->unlink('/tmp/id_rsa.pub');
         $this->app->log("ssh-rsa keypair generated for ".$username, LOGLEVEL_DEBUG);
      };

      if (!file_exists($sshkeys)){
         // add root's key
         $app->file->mkdirs($sshdir, '0755');
         if(is_file('/root/.ssh/authorized_keys')) $app->system->file_put_contents($sshkeys, $app->system->file_get_contents('/root/.ssh/authorized_keys'));

         // Remove duplicate keys
         $existing_keys = @file($sshkeys);
         $new_keys = explode("\n", $userkey);
         $final_keys_arr = @array_merge($existing_keys, $new_keys);
         $new_final_keys_arr = array();
         if(is_array($final_keys_arr) && !empty($final_keys_arr)){
            foreach($final_keys_arr as $key => $val){
               $new_final_keys_arr[$key] = trim($val);
            }
         }
         $final_keys = implode("\n", array_flip(array_flip($new_final_keys_arr)));

         // add the user's key
         file_put_contents($sshkeys, $final_keys);
         $app->file->remove_blank_lines($sshkeys);
         $this->app->log("ssh-rsa authorisation keyfile created in ".$sshkeys, LOGLEVEL_DEBUG);
      }
      //* Get the keys
      $existing_keys = file($sshkeys);
      $new_keys = explode("\n", $sshrsa);
      $old_keys = explode("\n", $this->data['old']['ssh_rsa']);

      //* Remove all old keys
      if(is_array($old_keys)) {
         foreach($old_keys as $key => $val) {
            $k = array_search(trim($val), $existing_keys);
            unset($existing_keys[$k]);
         }
      }

      //* merge the remaining keys and the ones fom the ispconfig database.
      if(is_array($new_keys)) {
         $final_keys_arr = array_merge($existing_keys, $new_keys);
      } else {
         $final_keys_arr = $existing_keys;
      }

      $new_final_keys_arr = array();
      if(is_array($final_keys_arr) && !empty($final_keys_arr)){
         foreach($final_keys_arr as $key => $val){
            $new_final_keys_arr[$key] = trim($val);
         }
      }
      $final_keys = implode("\n", array_flip(array_flip($new_final_keys_arr)));

      // add the custom key
      $app->system->file_put_contents($sshkeys, $final_keys);
      $app->file->remove_blank_lines($sshkeys);
      $this->app->log("ssh-rsa key updated in ".$sshkeys, LOGLEVEL_DEBUG);

      // set proper file permissions
      exec("chown -R ".escapeshellcmd($this->data['new']['puser']).":".escapeshellcmd($this->data['new']['pgroup'])." ".$sshdir);
      exec("chmod 700 ".$sshdir);
      exec("chmod 600 '$sshkeys'");

   }
   
   private function _delete_homedir($homedir,$userid,$parent_domain_id) {
      global $app, $conf;
		
      // check if we have to delete the dir
            $check = $app->db->queryOneRecord('SELECT shell_user_id FROM `shell_user` WHERE `dir` = ?', $homedir);
				
            if(!$check && is_dir($homedir)) {
               $web = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ?", $parent_domain_id);
               $app->system->web_folder_protection($web['document_root'], false);
					
               // delete dir
               if(substr($homedir, -1) !== '/') $homedir .= '/';
               $files = array('.bash_logout', '.bash_history', '.bashrc', '.profile');
               $dirs = array('.ssh', '.cache');
               foreach($files as $delfile) {
                  if(is_file($homedir . $delfile) && fileowner($homedir . $delfile) == $userid) unlink($homedir . $delfile);
               }
               foreach($dirs as $deldir) {
                  if(is_dir($homedir . $deldir) && fileowner($homedir . $deldir) == $userid) exec('rm -rf ' . escapeshellarg($homedir . $deldir));
               }
               $empty = true;
               $dirres = opendir($homedir);
               if($dirres) {
                  while(($entry = readdir($dirres)) !== false) {
                     if($entry != '.' && $entry != '..') {
                        $empty = false;
                        break;
                     }
                  }
                  closedir($dirres);
               }
               if($empty == true) {
                  rmdir($homedir);
               }
               unset($files);
               unset($dirs);
					
               $app->system->web_folder_protection($web['document_root'], true);
            }
   
   }

} // end class

?>
?>