<?php

class ModelUserAuth extends Model {

   public function checkLogin($username = '', $password = '') {

      $query = $this->db->query("SELECT " . TABLE_USER . ".username, " . TABLE_USER . ".uid, " . TABLE_USER . ".realname, " . TABLE_USER . ".dn, " . TABLE_USER . ".password, " . TABLE_USER . ".isadmin, " . TABLE_USER . ".domain FROM " . TABLE_USER . ", " . TABLE_EMAIL . " WHERE " . TABLE_EMAIL . ".email=? AND " . TABLE_EMAIL . ".uid=" . TABLE_USER . ".uid", array($username));

      if(!isset($query->row['password'])) { return 0; }

      $pass = crypt($password, $query->row['password']);

      if($pass == $query->row['password']){

         $_SESSION['username'] = $query->row['username'];
         $_SESSION['uid'] = $query->row['uid'];
         $_SESSION['admin_user'] = $query->row['isadmin'];
         $_SESSION['email'] = $username;
         $_SESSION['domain'] = $query->row['domain'];
         $_SESSION['realname'] = $query->row['realname'];

         $_SESSION['emails'] = $this->model_user_user->get_users_all_email_addresses($query->row['uid']);
         $_SESSION['folders'] = $this->model_folder_folder->get_all_folder_ids($query->row['uid']);

         AUDIT(ACTION_LOGIN, $username, '', '', 'successful auth against user table');

         return 1;
      }
      else {
         AUDIT(ACTION_LOGIN_FAILED, $username, '', '', 'failed auth against user table');
      }

      if(strlen($query->row['dn']) > 3) { return $this->checkLoginAgainstLDAP($query->row, $password); }

      return 0;
   }


   private function checkLoginAgainstLDAP($user = array(), $password = '') {
      if($password == '' || !isset($user['username']) || !isset($user['domain']) || !isset($user['dn']) || strlen($user['domain']) < 2){ return 0; }

      $query = $this->db->query("SELECT remotehost, basedn FROM " . TABLE_REMOTE . " WHERE remotedomain=?", array($user['domain']));

      if($query->num_rows != 1) { return 0; }

      $ldap = new LDAP($query->row['remotehost'], $user['dn'], $password);

      if($ldap->is_bind_ok()) {
         $_SESSION['username'] = $user['username'];
         $_SESSION['admin_user'] = 0;
         $_SESSION['email'] = $user['username'];

         $this->change_password($user['username'], $password);

         AUDIT(ACTION_LOGIN, $user['username'], '', '', 'changed password in local table');

         return 1;
      }
      else {
         AUDIT(ACTION_LOGIN_FAILED, $user['username'], '', '', 'failed bind to ' . $query->row['remotehost'], $user['dn']);
      }

      return 0; 
   }


   public function change_password($username = '', $password = '') {
      if($username == "" || $password == ""){ return 0; }

      $query = $this->db->query("UPDATE " . TABLE_USER . " SET password=? WHERE username=?", array(crypt($password), $username));

      $rc = $this->db->countAffected();

      return $rc;
   }

}

?>