application/models/users_model.php

   1 <?php
   2
   3 /**
   4  * Class Users_model models user information from DB
   5  *
   6  * @category    Model
   7  * @author              calinburloiu
   8  *
   9  */
  10 class Users_model extends CI_Model {
  11         public $db = NULL;
  12
  13         public function __construct()
  14         {
  15                 parent::__construct();
  16
  17                 if ($this->db === NULL)
  18                 {
  19                         $this->load->library('singleton_db');
  20                         $this->db = $this->singleton_db->connect();
  21                 }
  22         }
  23
  24         /**
  25          * Check authentication credentials. $username can be username or e-mail.
  26          *
  27          * @param string $username
  28          * @param string $password
  29          * @return mixed can return FALSE if authentication failed, a `users`DB row
  30          * as an associative array if authentication was successful
  31          */
  32         public function login($username, $password)
  33         {
  34                 $this->load->helper('email');
  35
  36                 // User logs with e-mail address.
  37                 if (! valid_email($username))
  38                         $cond_user = "username = '$username'";
  39                 else
  40                         $cond_user = "email = '$username'";
  41
  42                 $enc_password = sha1($password);
  43
  44                 $query = $this->db->query("SELECT u.*, a.activation_code
  45                         FROM `users` u LEFT JOIN `users_unactivated` a ON (u.id = a.user_id)
  46                         WHERE $cond_user
  47                                 AND (auth_src = 'ldap' OR password = '$enc_password')");
  48
  49                 // It is possible that the user has a LDAP account but he's
  50                 // authenticating here for the first time so it does not have an entry
  51                 // in `users` table.
  52                 if ($query->num_rows() === 0)
  53                 {
  54                         $ldap_userdata = $this->ldap_login($username, $password);
  55                         if ($ldap_userdata === FALSE)
  56                                 return FALSE;
  57                         $userdata = $this->convert_ldap_userdata($ldap_userdata);
  58                         $this->register($userdata);
  59
  60                         $user = $this->login($username, $password);
  61                         $user['import'] = TRUE;
  62                         return $user;
  63                 }
  64
  65                 $user = $query->row_array();
  66
  67                 // Authenticate with LDAP.
  68                 if ($user['auth_src'] == 'ldap'
  69                                 && ! $this->ldap_login($username, $password))
  70                         return FALSE;
  71
  72                 if (empty($user['username']) || empty($user['email'])
  73                                 || empty($user['first_name']) || empty($user['last_name'])
  74                                 || empty($user['country']))
  75                         $user['import'] = TRUE;
  76
  77                 // Update last login time.
  78                 $this->db->query("UPDATE `users`
  79                         SET last_login = UTC_TIMESTAMP()
  80                         WHERE username = '$username'");
  81
  82                 // If we are here internal authentication has successful.
  83                 return $user;
  84         }
  85
  86         /**
  87          * Begin the OpenID login by redirecting user to the OP to authenticate.
  88          *
  89          * @param string $openid
  90          */
  91         public function openid_begin_login($openid)
  92         {
  93                 $this->lang->load('openid');
  94                 $this->load->library('openid');
  95
  96                 $request_to = site_url('user/check_openid_login');
  97
  98                 $req = array('nickname');
  99                 $opt = array('fullname', 'email', 'dob', 'country');
 100                 $policy = site_url('user/openid_policy');
 101
 102                 $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make(
 103                                 'http://axschema.org/contact/email', 1, TRUE);
 104                 $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make(
 105                                 'http://axschema.org/namePerson/first', 1, TRUE);
 106                 $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make(
 107                                 'http://axschema.org/namePerson/last', 1, TRUE);
 108                 $ax_attributes[] = Auth_OpenID_AX_AttrInfo::make(
 109                                 'http://axschema.org/contact/country', 1, TRUE);
 110
 111                 $this->openid->set_request_to($request_to);
 112                 $this->openid->set_trust_root(base_url());
 113                 $this->openid->set_sreg(TRUE, $req, $opt, $policy);
 114                 $this->openid->set_ax(TRUE, $ax_attributes);
 115
 116                 // Redirection to OP site will follow.
 117                 $this->openid->authenticate($openid);
 118         }
 119
 120         /**
 121          * Finalize the OpenID login. Register user if is here for the first time.
 122          *
 123          * @return mixed returns a `users` DB row as an associative array if
 124          * authentication was successful or Auth_OpenID_CANCEL/_FAILURE if it was
 125          * unsuccessful.
 126          */
 127         public function openid_complete_login()
 128         {
 129                 $this->lang->load('openid');
 130                 $this->load->library('openid');
 131
 132                 $request_to = site_url('user/check_openid_login');
 133                 $this->openid->set_request_to($request_to);
 134
 135                 $response = $this->openid->get_response();
 136
 137                 if ($response->status === Auth_OpenID_CANCEL
 138                                 || $response->status === Auth_OpenID_FAILURE)
 139                         return $response->status;
 140
 141                 // Auth_OpenID_SUCCESS
 142                 $openid = $response->getDisplayIdentifier();
 143                 //$esc_openid = htmlspecialchars($openid, ENT_QUOTES);
 144
 145                 // Get user_id to see if it's the first time the user logs in with
 146                 // OpenID.
 147                 $query = $this->db->query("SELECT * from `users_openid`
 148                         WHERE openid_url = '$openid'");
 149                 $import = FALSE;
 150
 151                 // First time with OpenID => register user
 152                 if ($query->num_rows() === 0)
 153                 {
 154                         $user_id = $this->openid_register($response);
 155                         $import = TRUE;
 156                 }
 157                 // Not first time with OpenID.
 158                 else
 159                         $user_id = $query->row()->user_id;
 160
 161                 // Login
 162                 $query = $this->db->query("SELECT * FROM `users`
 163                         WHERE id = $user_id");
 164                 $userdata = $query->row_array();
 165                 $userdata['import'] = $import;
 166
 167                 if (empty($userdata['username']) || empty($userdata['email'])
 168                                 || empty($userdata['first_name'])
 169                                 || empty($userdata['last_name'])
 170                                 || empty($userdata['country']))
 171                         $userdata['import'] = TRUE;
 172
 173                 // Update last login time.
 174                 $this->db->query("UPDATE `users`
 175                         SET last_login = UTC_TIMESTAMP()
 176                         WHERE id = $user_id");
 177
 178                 return $userdata;
 179         }
 180
 181         /**
 182          * Register an user that logged in with OpenID for the first time.
 183          *
 184          * @param object $op_response object returned by Janrain
 185          * Consumer::complete method.
 186          * @return mixed the user_id inserted or FALSE on error
 187          */
 188         public function openid_register($op_response)
 189         {
 190                 $sreg_resp = Auth_OpenID_SRegResponse::fromSuccessResponse($op_response);
 191                 $ax_resp = Auth_OpenID_AX_FetchResponse::fromSuccessResponse($op_response);
 192
 193                 // E-mail
 194                 $email = $ax_resp->get('http://axschema.org/contact/email');
 195                 if (empty($email) || is_a($email, 'Auth_OpenID_AX_Error'))
 196                         $data['email'] = $sreg_resp->get('email', '');
 197                 else
 198                         $data['email'] = $email[0];
 199
 200                 // First Name
 201                 $first_name = $ax_resp->get('http://axschema.org/namePerson/first');
 202                 if (empty($first_name) || is_a($first_name, 'Auth_OpenID_AX_Error'))
 203                         $data['first_name'] = '';
 204                 else
 205                         $data['first_name'] = $first_name[0];
 206
 207                 // Sur Name
 208                 $last_name = $ax_resp->get('http://axschema.org/namePerson/last');
 209                 if (empty($last_name) || is_a($last_name, 'Auth_OpenID_AX_Error'))
 210                         $data['last_name'] = '';
 211                 else
 212                         $data['last_name'] = $last_name[0];
 213
 214                 // First Name and Last Name
 215                 if (empty($data['first_name']) || empty($data['last_name']))
 216                 {
 217                         $fullname = $sreg_resp->get('fullname');
 218
 219                         if ($fullname)
 220                         {
 221                                 if (empty($data['first_name']))
 222                                         $data['first_name'] = substr(
 223                                                         $fullname, 0, strrpos($fullname, ' '));
 224                                 if (empty($data['last_name']))
 225                                         $data['last_name'] = substr(
 226                                                         $fullname, strrpos($fullname, ' ') + 1);
 227                         }
 228                 }
 229
 230                 // Username
 231                 $data['username'] = $sreg_resp->get('nickname');
 232                 if (!$data['username'])
 233                 {
 234                         if (!empty($data['email']))
 235                         {
 236                                 $data['email'] = strtolower($data['email']);
 237                                 $data['username'] = substr($data['email'],
 238                                                 0, strpos($data['email'], '@'));
 239                                 $data['username'] = preg_replace(array('/[^a-z0-9\._]*/'),
 240                                                 array(''), $data['username']);
 241                         }
 242                         else if(!empty($data['first_name']) || !empty($data['last_name']))
 243                         {
 244                                 $data['username'] = $data['first_name'] . '_'
 245                                                 . $data['last_name'];
 246                         }
 247                         else
 248                                 $data['username'] = $this->gen_username();
 249                 }
 250                 $data['username'] = substr($data['username'], 0, 24);
 251                 if ($this->get_userdata($data['username']))
 252                 {
 253                         $chars = 'abcdefghijklmnopqrstuvwxyz0123456789';
 254                         $len_chars = strlen($chars);
 255                         $data['username'] .= '_';
 256                         do
 257                         {
 258                                 $data['username'] .= $chars[ mt_rand(0, $len_chars - 1) ];
 259                         } while($this->get_userdata($data['username']));
 260                 }
 261                 $data['username'] = 'autogen_' . $data['username'];
 262
 263                 // Country
 264                 $country = $ax_resp->get('http://axschema.org/contact/country');
 265                 if (empty($country) || is_a($country, 'Auth_OpenID_AX_Error'))
 266                         $data['country'] = $sreg_resp->get('country', '');
 267                 else
 268                         $data['country'] = $country[0];
 269
 270                 // Birth Date
 271                 $data['birth_date'] = $sreg_resp->get('dob', NULL);
 272
 273                 // OpenID
 274                 $data['auth_src'] = 'openid';
 275
 276 //              print_r($data);
 277
 278                 if (!$this->register($data, $op_response->getDisplayIdentifier()))
 279                         return FALSE;
 280
 281                 $query = $this->db->query("SELECT id from `users`
 282                         WHERE username = '{$data['username']}'");
 283                 return $query->row()->id;
 284         }
 285
 286         /**
 287          * Converts an array returned by LDAP login to an array which contains
 288          * user data ready to be used in `users` DB.
 289          *
 290          * @param array $ldap_userdata
 291          * @return array
 292          */
 293         public function convert_ldap_userdata($ldap_userdata)
 294         {
 295                 $userdata['username'] = $ldap_userdata['uid'][0];
 296                 $userdata['email'] = $ldap_userdata['mail'][0];
 297                 $userdata['first_name'] = $ldap_userdata['givenname'][0];
 298                 $userdata['last_name'] = $ldap_userdata['sn'][0];
 299
 300                 $userdata['auth_src'] = 'ldap';
 301
 302                 return $userdata;
 303         }
 304
 305         /**
 306         * Login with LDAP.
 307         *
 308         * @param string $username
 309         * @param string $password
 310         * @return boolean
 311         * @author  Alex Herișanu, Răzvan Deaconescu, Călin-Andrei Burloiu
 312         */
 313         public function ldap_login($username, $password)
 314         {
 315                 $this->config->load('ldap');
 316
 317                 // First connection: binding.
 318                 // TODO exception
 319                 $ds = ldap_connect($this->config->item('ldap_server')) or die("Can't connect to ldap server.\n");
 320                 if (!@ldap_bind($ds, $this->config->item('ldap_bind_user'),
 321                         $this->config->item('ldap_bind_password')))
 322                 {
 323                         ldap_close($ds);
 324                         die("Can't connect to ".$this->config->item('ldap_server')."\n");
 325                         return FALSE;
 326                 }
 327                 $sr = ldap_search($ds, "dc=cs,dc=curs,dc=pub,dc=ro", "(uid=" . $username . ")");
 328                 if (ldap_count_entries($ds, $sr) > 1)
 329                 die("Multiple entries with the same uid in LDAP database??");
 330                 if (ldap_count_entries($ds, $sr) < 1) {
 331                         ldap_close($ds);
 332                         return FALSE;
 333                 }
 334
 335                 $info = ldap_get_entries($ds, $sr);
 336                 $dn = $info[0]["dn"];
 337                 ldap_close($ds);
 338
 339                 // Second connection: connect with user's credentials.
 340                 $ds = ldap_connect($this->config->item('ldap_server')) or die("Can't connect to ldap server\n");
 341                 if (!@ldap_bind($ds, $dn, $password) or $password == '') {
 342                         ldap_close($ds);
 343                         return FALSE;
 344                 }
 345
 346                 // Verifify if DN belongs to the requested OU.
 347                 $info[0]['ou_ok'] = $this->ldap_dn_belongs_ou( $dn, $this->config->item('ldap_req_ou') );
 348
 349                 // Set authentication source.
 350                 $info[0]['auth_src'] = 'ldap_first_time';
 351
 352                 return $info[0];
 353         }
 354
 355         /**
 356         * Verify if a user belongs to a group.
 357         *
 358         * @param string $dn = "ou=Student,ou=People..."
 359         * @param array $ou = array ("Student", etc
 360         * @return TRUE or FALSE
 361         * @author  Răzvan Herișanu, Răzvan Deaconescu, Călin-Andrei Burloiu
 362         */
 363         public function ldap_dn_belongs_ou($dn, $ou)
 364         {
 365                 if (!is_array($ou))
 366                         $ou = array ($ou);
 367
 368                 $founded = FALSE;
 369                 $words = explode(',', $dn);
 370                 foreach ($words as $c) {
 371                         $parts = explode("=", $c);
 372                         $key = $parts[0];
 373                         $value = $parts[1];
 374
 375                         if (strtolower($key) == "ou" && in_array($value, $ou) )
 376                                 $founded = TRUE;
 377                 }
 378
 379                 return $founded;
 380         }
 381
 382         /**
 383          * Adds a new user to DB.
 384          * Do not add join_date and last_login column, they will be automatically
 385          * added.
 386          * Provide an 'openid' with the OpenID as value in order to register users
 387          * logging in this way.
 388          *
 389          * @param array $data   corresponds to DB columns
 390          */
 391         public function register($data, $openid = NULL)
 392         {
 393                 $this->load->helper('array');
 394
 395                 // TODO verify mandatory data existance
 396
 397                 // Process data.
 398                 if (isset($data['password']))
 399                         $data['password'] = sha1($data['password']);
 400
 401                 if (empty($data['birth_date']))
 402                         $data['birth_date'] = NULL;
 403
 404                 $cols = '';
 405                 $vals = '';
 406                 foreach ($data as $col=> $val)
 407                 {
 408                         if ($val === NULL)
 409                         {
 410                                 $cols .= "$col, ";
 411                                 $vals .= "NULL, ";
 412                                 continue;
 413                         }
 414
 415                         $cols .= "$col, ";
 416                         if (is_int($val))
 417                                 $vals .= "$val, ";
 418                         else if (is_string($val))
 419                                 $vals .= "'$val', ";
 420                 }
 421                 $cols = substr($cols, 0, -2);
 422                 $vals = substr($vals, 0, -2);
 423
 424                 $query = $this->db->query("INSERT INTO `users`
 425                         ($cols, registration_date, last_login)
 426                         VALUES ($vals, utc_timestamp(), utc_timestamp())");
 427                 if ($query === FALSE)
 428                         return FALSE;
 429
 430                 // If registered with OpenID insert a row in `users_openid`.
 431                 if ($openid)
 432                 {
 433                         // Find user_id.
 434                         $query = $this->db->query("SELECT id from `users`
 435                                 WHERE username = '{$data['username']}'");
 436                         if ($query->num_rows() === 0)
 437                                 return FALSE;
 438                         $user_id = $query->row()->id;
 439
 440                         // Insert row in `users_openid`.
 441                         $query = $this->db->query("INSERT INTO `users_openid`
 442                                 (openid_url, user_id)
 443                                 VALUES ('$openid', $user_id)");
 444                         if (!$query)
 445                                 return FALSE;
 446                 }
 447
 448                 // If registered with internal authentication it needs to activate
 449                 // the account.
 450                 if ($data['auth_src'] == 'internal')
 451                 {
 452                         $activation_code = Users_model::gen_activation_code($data['username']);
 453                         $user_id = $this->get_user_id($data['username']);
 454                         $query = $this->db->query("INSERT INTO `users_unactivated`
 455                                 (user_id, activation_code)
 456                                 VALUES ($user_id, '$activation_code')");
 457                         $this->send_activation_email($user_id, $data['email'],
 458                                 $activation_code, $data['username']);
 459                 }
 460
 461                 // TODO exception on failure
 462                 return $query;
 463         }
 464
 465         public function get_user_id($username)
 466         {
 467                 $query = $this->db->query("SELECT id FROM `users`
 468                         WHERE username = '$username'");
 469
 470                 if ($query->num_rows() === 0)
 471                         return FALSE;
 472
 473                 return $query->row()->id;
 474         }
 475
 476         // TODO cleanup account activation
 477         public function cleanup_account_activation()
 478         {
 479
 480         }
 481
 482         /**
 483          * Activated an account for an user having $user_id with $activation_code.
 484          *
 485          * @param int $user_id
 486          * @param string $activation_code       hexa 16 characters string
 487          * @return returns TRUE if activation was successful and FALSE otherwise
 488          */
 489         public function activate_account($user_id, $activation_code)
 490         {
 491                 $query = $this->db->query("SELECT * FROM `users_unactivated`
 492                         WHERE user_id = $user_id
 493                                 AND activation_code = '$activation_code'");
 494
 495                 if ($query->num_rows() === 0)
 496                         return FALSE;
 497
 498                 $this->db->query("DELETE FROM `users_unactivated`
 499                         WHERE user_id = $user_id");
 500
 501                 return TRUE;
 502         }
 503
 504         public function send_activation_email($user_id, $email = NULL,
 505                         $activation_code = NULL, $username = NULL)
 506         {
 507                 if (!$activation_code || !$email || !$username)
 508                 {
 509                         if (!$email)
 510                                 $cols = 'email, ';
 511                         else
 512                                 $cols = '';
 513
 514                         $userdata = $this->get_userdata($user_id,
 515                                         $cols. "a.activation_code, username");
 516                         $activation_code =& $userdata['activation_code'];
 517
 518                         if (!$email)
 519                                 $email =& $userdata['email'];
 520                         $username =& $userdata['username'];
 521                 }
 522
 523                 if ($activation_code === NULL)
 524                         return TRUE;
 525
 526                 $subject = '['. $this->config->item('site_name')
 527                                 . '] Account Activation';
 528                 $activation_url =
 529                                 site_url("user/activate/$user_id/code/$activation_code");
 530                 $msg = sprintf($this->lang->line('user_activation_email_content'),
 531                         $username, $this->config->item('site_name'), site_url(),
 532                         $activation_url, $activation_code);
 533                 $headers = "From: ". $this->config->item('noreply_email');
 534
 535                 return mail($email, $subject, $msg, $headers);
 536         }
 537
 538         public function recover_password($username, $email)
 539         {
 540                 $userdata = $this->get_userdata($username, 'email, username, id');
 541
 542                 if (strcmp($userdata['email'], $email) !== 0)
 543                         return FALSE;
 544
 545                 $recovered_password = Users_model::gen_password();
 546
 547                 $this->set_userdata(intval($userdata['id']), array('password'=>
 548                                 $recovered_password));
 549
 550                 $subject = '['. $this->config->item('site_name')
 551                 . '] Password Recovery';
 552                 $msg = sprintf($this->lang->line('user_password_recovery_email_content'),
 553                         $username, $this->config->item('site_name'), site_url(),
 554                         $recovered_password);
 555                 $headers = "From: ". $this->config->item('noreply_email');
 556
 557                 mail($email, $subject, $msg, $headers);
 558
 559                 return TRUE;
 560         }
 561
 562         /**
 563          * Returns data from `users` table. If $user is int it is used as an
 564          * id, if it is string it is used as an username.
 565          *
 566          * @param mixed $user
 567          * @param string $table_cols    (optional) string with comma separated
 568          * `users` table column names. Use a.activation_code to check user's
 569          * account activation_code. If this value is NULL than the account is
 570          * active.
 571          * @return array        associative array with userdata from DB
 572          */
 573         public function get_userdata($user, $table_cols = '*')
 574         {
 575                 if (is_int($user))
 576                         $cond = "id = $user";
 577                 else
 578                         $cond = "username = '$user'";
 579
 580                 $query = $this->db->query("SELECT $table_cols
 581                         FROM `users` u LEFT JOIN `users_unactivated` a
 582                                 ON (u.id = a.user_id)
 583                         WHERE $cond");
 584
 585                 if ($query->num_rows() === 0)
 586                         return FALSE;
 587
 588                 $userdata = $query->row_array();
 589
 590                 // Post process userdata.
 591                 if (isset($userdata['picture']))
 592                 {
 593                         $userdata['picture_thumb'] = site_url(
 594                                 "data/user_pictures/{$userdata['picture']}-thumb.jpg");
 595                         $userdata['picture'] = site_url(
 596                                 "data/user_pictures/{$userdata['picture']}");
 597                 }
 598
 599                 return $userdata;
 600         }
 601
 602         /**
 603          * Modifies data from `users` table for user with $user_id.
 604          *
 605          * @param int $user_id
 606          * @param array $data   key-value pairs with columns and new values to be
 607          * modified
 608          * @return boolean      returns TRUE on success and FALSE otherwise
 609          */
 610         public function set_userdata($user_id, $data)
 611         {
 612                 // TODO verify mandatory data existance
 613
 614                 // Process data.
 615                 if (isset($data['password']))
 616                         $data['password'] = sha1($data['password']);
 617                 // TODO picture data: save, convert, make it thumbnail
 618
 619                 if (empty($data['birth_date']))
 620                         $data['birth_date'] = NULL;
 621
 622                 $set = '';
 623                 foreach ($data as $col => $val)
 624                 {
 625                         if ($val === NULL)
 626                         {
 627                                 $set .= "$col = NULL, ";
 628                                 continue;
 629                         }
 630
 631                         if (is_int($val))
 632                                 $set .= "$col = $val, ";
 633                         else if (is_string($val))
 634                                 $set .= "$col = '$val', ";
 635                 }
 636                 $set = substr($set, 0, -2);
 637
 638                 $query_str = "UPDATE `users`
 639                         SET $set WHERE id = $user_id";
 640                 //echo "<p>$query_str</p>";
 641                 $query = $this->db->query($query_str);
 642
 643                 // TODO exception
 644                 return $query;
 645         }
 646
 647         public static function gen_activation_code($str = '')
 648         {
 649                 $ci =& get_instance();
 650
 651                 $activation_code = substr(
 652                         sha1(''. $str. $ci->config->item('encryption_key')
 653                                 . mt_rand()),
 654                         0,
 655                         16);
 656
 657                 return $activation_code;
 658         }
 659
 660         public static function gen_password()
 661         {
 662                 $ci =& get_instance();
 663                 $length = 16;
 664                 $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,.?!_-';
 665                 $len_chars = strlen($chars);
 666                 $enc_key = $ci->config->item('encryption_key');
 667                 $len_enc_key = strlen($enc_key);
 668                 $password = '';
 669
 670                 for ($p = 0; $p < $length; $p++)
 671                 {
 672                         $i = (mt_rand(1, 100) * ord($enc_key[ mt_rand(0, $len_enc_key-1) ]))
 673                                 % $len_chars;
 674                         $password .= $chars[$i];
 675                 }
 676
 677                 return $password;
 678         }
 679
 680         public static function gen_username()
 681         {
 682                 $chars = 'abcdefghijklmnopqrstuvwxyz0123456789._';
 683                 $len_chars = strlen($chars);
 684                 $len = 8;
 685                 $username = '';
 686
 687                 for ($i = 0; $i < $len; $i++)
 688                         $username .= $chars[ mt_rand(0, $len_chars - 1) ];
 689
 690                 return $username;
 691         }
 692
 693         public static function roles_to_string($roles)
 694         {
 695                 $ci =& get_instance();
 696                 $ci->lang->load('user');
 697
 698                 if ($roles == USER_ROLE_STANDARD)
 699                         return $ci->lang->line('user_role_standard');
 700                 else
 701                 {
 702                         $str_roles = '';
 703
 704                         if ($roles & USER_ROLE_ADMIN)
 705                                 $str_roles .= $ci->lang->line('user_role_admin') . '; ';
 706                 }
 707
 708                 return $str_roles;
 709         }
 710 }
 711
 712 /* End of file users_model.php */
 713 /* Location: ./application/models/users_model.php */