crm.fsf.org/20131203/files/sites/all/modules-old/civicrm/CRM/Utils/System/Drupal6.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 4.6                                                |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2015                                |
   7  +--------------------------------------------------------------------+
   8  | This file is a part of CiviCRM.                                    |
   9  |                                                                    |
  10  | CiviCRM is free software; you can copy, modify, and distribute it  |
  11  | under the terms of the GNU Affero General Public License           |
  12  | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  13  |                                                                    |
  14  | CiviCRM is distributed in the hope that it will be useful, but     |
  15  | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  16  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  17  | See the GNU Affero General Public License for more details.        |
  18  |                                                                    |
  19  | You should have received a copy of the GNU Affero General Public   |
  20  | License and the CiviCRM Licensing Exception along                  |
  21  | with this program; if not, contact CiviCRM LLC                     |
  22  | at info[AT]civicrm[DOT]org. If you have questions about the        |
  23  | GNU Affero General Public License or the licensing of CiviCRM,     |
  24  | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  25  +--------------------------------------------------------------------+
  26  */
  27
  28 /**
  29  *
  30  * @package CRM
  31  * @copyright CiviCRM LLC (c) 2004-2015
  32  * $Id$
  33  *
  34  */
  35
  36 /**
  37  * Drupal specific stuff goes here
  38  */
  39 class CRM_Utils_System_Drupal6 extends CRM_Utils_System_DrupalBase {
  40
  41   /**
  42    * If we are using a theming system, invoke theme, else just print the
  43    * content
  44    *
  45    * @param string $content
  46    *   The content that will be themed.
  47    * @param bool $print
  48    *   Are we displaying to the screen or bypassing theming?.
  49    * @param bool $maintenance
  50    *   For maintenance mode.
  51    *
  52    * @return void
  53    *   prints content on stdout
  54    */
  55   public function theme(&$content, $print = FALSE, $maintenance = FALSE) {
  56     // TODO: Simplify; this was copied verbatim from CiviCRM 3.4's multi-UF theming function, but that's more complex than necessary
  57     if (function_exists('theme') && !$print) {
  58       if ($maintenance) {
  59         drupal_set_breadcrumb('');
  60         drupal_maintenance_theme();
  61       }
  62
  63       // Arg 3 for D6 theme() is "show_blocks". Previously, we passed
  64       // through a badly named variable ("$args") which was almost always
  65       // TRUE (except on fatal error screen).  However, this feature is
  66       // non-functional on D6 default themes, was purposefully removed from
  67       // D7, has no analog in other our other CMS's, and clutters the code.
  68       // Hard-wiring to TRUE should be OK.
  69       $out = theme('page', $content, TRUE);
  70     }
  71     else {
  72       $out = $content;
  73     }
  74
  75     print $out;
  76   }
  77
  78   /**
  79    * @inheritDoc
  80    */
  81   public function createUser(&$params, $mail) {
  82     $form_state = array();
  83     $form_state['values'] = array(
  84       'name' => $params['cms_name'],
  85       'mail' => $params[$mail],
  86       'op' => 'Create new account',
  87     );
  88
  89     $admin = user_access('administer users');
  90     if (!variable_get('user_email_verification', TRUE) || $admin) {
  91       $form_state['values']['pass']['pass1'] = $params['cms_pass'];
  92       $form_state['values']['pass']['pass2'] = $params['cms_pass'];
  93     }
  94
  95     $config = CRM_Core_Config::singleton();
  96
  97     // we also need to redirect b
  98     $config->inCiviCRM = TRUE;
  99
 100     $form = drupal_retrieve_form('user_register', $form_state);
 101     $form['#post'] = $form_state['values'];
 102     drupal_prepare_form('user_register', $form, $form_state);
 103
 104     // remove the captcha element from the form prior to processing
 105     unset($form['captcha']);
 106
 107     drupal_process_form('user_register', $form, $form_state);
 108
 109     $config->inCiviCRM = FALSE;
 110
 111     if (form_get_errors() || !isset($form_state['user'])) {
 112       return FALSE;
 113     }
 114     return $form_state['user']->uid;
 115   }
 116
 117   /**
 118    * @inheritDoc
 119    */
 120   public function updateCMSName($ufID, $ufName) {
 121     // CRM-5555
 122     if (function_exists('user_load')) {
 123       $user = user_load(array('uid' => $ufID));
 124       if ($user->mail != $ufName) {
 125         user_save($user, array('mail' => $ufName));
 126         $user = user_load(array('uid' => $ufID));
 127       }
 128     }
 129   }
 130
 131   /**
 132    * Check if username and email exists in the drupal db.
 133    *
 134    * @param array $params
 135    *   Array of name and mail values.
 136    * @param array $errors
 137    *   Array of errors.
 138    * @param string $emailName
 139    *   Field label for the 'email'.
 140    *
 141    * @return void
 142    */
 143   public function checkUserNameEmailExists(&$params, &$errors, $emailName = 'email') {
 144     $config = CRM_Core_Config::singleton();
 145
 146     $dao = new CRM_Core_DAO();
 147     $name = $dao->escape(CRM_Utils_Array::value('name', $params));
 148     $email = $dao->escape(CRM_Utils_Array::value('mail', $params));
 149     _user_edit_validate(NULL, $params);
 150     $errors = form_get_errors();
 151     if ($errors) {
 152       if (!empty($errors['name'])) {
 153         $errors['cms_name'] = $errors['name'];
 154       }
 155       if (!empty($errors['mail'])) {
 156         $errors[$emailName] = $errors['mail'];
 157       }
 158       // also unset drupal messages to avoid twice display of errors
 159       unset($_SESSION['messages']);
 160     }
 161
 162     // Do the name check manually.
 163     $nameError = user_validate_name($params['name']);
 164     if ($nameError) {
 165       $errors['cms_name'] = $nameError;
 166     }
 167
 168     $sql = "
 169       SELECT name, mail
 170       FROM {users}
 171       WHERE (LOWER(name) = LOWER('$name')) OR (LOWER(mail) = LOWER('$email'))
 172     ";
 173
 174     $result = db_query($sql);
 175     $row = db_fetch_array($result);
 176     if (!$row) {
 177       return;
 178     }
 179
 180     $user = NULL;
 181
 182     if (!empty($row)) {
 183       $dbName = CRM_Utils_Array::value('name', $row);
 184       $dbEmail = CRM_Utils_Array::value('mail', $row);
 185       if (strtolower($dbName) == strtolower($name)) {
 186         $errors['cms_name'] = ts('The username %1 is already taken. Please select another username.',
 187           array(1 => $name)
 188         );
 189       }
 190       if (strtolower($dbEmail) == strtolower($email)) {
 191         if (empty($email)) {
 192           $errors[$emailName] = ts('You cannot create an email account for a contact with no email',
 193             array(1 => $email)
 194           );
 195         }
 196         else {
 197           $errors[$emailName] = ts('This email %1 is already registered. Please select another email.',
 198             array(1 => $email)
 199           );
 200         }
 201       }
 202     }
 203   }
 204
 205   /**
 206    * @inheritDoc
 207    */
 208   public function setTitle($title, $pageTitle = NULL) {
 209     if (!$pageTitle) {
 210       $pageTitle = $title;
 211     }
 212     if (arg(0) == 'civicrm') {
 213       //set drupal title
 214       drupal_set_title($pageTitle);
 215     }
 216   }
 217
 218   /**
 219    * @inheritDoc
 220    */
 221   public function appendBreadCrumb($breadCrumbs) {
 222     $breadCrumb = drupal_get_breadcrumb();
 223
 224     if (is_array($breadCrumbs)) {
 225       foreach ($breadCrumbs as $crumbs) {
 226         if (stripos($crumbs['url'], 'id%%')) {
 227           $args = array('cid', 'mid');
 228           foreach ($args as $a) {
 229             $val = CRM_Utils_Request::retrieve($a, 'Positive', CRM_Core_DAO::$_nullObject,
 230               FALSE, NULL, $_GET
 231             );
 232             if ($val) {
 233               $crumbs['url'] = str_ireplace("%%{$a}%%", $val, $crumbs['url']);
 234             }
 235           }
 236         }
 237         $breadCrumb[] = "<a href=\"{$crumbs['url']}\">{$crumbs['title']}</a>";
 238       }
 239     }
 240     drupal_set_breadcrumb($breadCrumb);
 241   }
 242
 243   /**
 244    * @inheritDoc
 245    */
 246   public function resetBreadCrumb() {
 247     $bc = array();
 248     drupal_set_breadcrumb($bc);
 249   }
 250
 251   /**
 252    * Append a string to the head of the html file.
 253    *
 254    * @param string $head
 255    *   The new string to be appended.
 256    *
 257    * @return void
 258    */
 259   public function addHTMLHead($head) {
 260     drupal_set_html_head($head);
 261   }
 262
 263   /**
 264    * Add a css file.
 265    *
 266    * @param $url : string, absolute path to file
 267    * @param string $region
 268    *   location within the document: 'html-header', 'page-header', 'page-footer'.
 269    *
 270    * Note: This function is not to be called directly
 271    * @see CRM_Core_Region::render()
 272    *
 273    * @return bool
 274    *   TRUE if we support this operation in this CMS, FALSE otherwise
 275    */
 276   public function addStyleUrl($url, $region) {
 277     if ($region != 'html-header' || !$this->formatResourceUrl($url)) {
 278       return FALSE;
 279     }
 280     drupal_add_css($url);
 281     return TRUE;
 282   }
 283
 284   /**
 285    * @inheritDoc
 286    */
 287   public function mapConfigToSSL() {
 288     global $base_url;
 289     $base_url = str_replace('http://', 'https://', $base_url);
 290   }
 291
 292   /**
 293    * @inheritDoc
 294    */
 295   public function authenticate($name, $password, $loadCMSBootstrap = FALSE, $realPath = NULL) {
 296     //@todo this 'PEAR-y' stuff is only required when bookstrap is not being loaded which is rare
 297     // if ever now.
 298     // probably if bootstrap is loaded this call
 299     // CRM_Utils_System::loadBootStrap($bootStrapParams, TRUE, TRUE, $realPath); would be
 300     // sufficient to do what this fn does. It does exist as opposed to return which might need some hanky-panky to make
 301     // safe in the unknown situation where authenticate might be called & it is important that
 302     // false is returned
 303     require_once 'DB.php';
 304
 305     $config = CRM_Core_Config::singleton();
 306
 307     $dbDrupal = DB::connect($config->userFrameworkDSN);
 308     if (DB::isError($dbDrupal)) {
 309       CRM_Core_Error::fatal("Cannot connect to drupal db via $config->userFrameworkDSN, " . $dbDrupal->getMessage());
 310     }
 311
 312     $strtolower = function_exists('mb_strtolower') ? 'mb_strtolower' : 'strtolower';
 313     $dbpassword = md5($password);
 314     $name = $dbDrupal->escapeSimple($strtolower($name));
 315     $sql = 'SELECT u.* FROM ' . $config->userFrameworkUsersTableName . " u WHERE LOWER(u.name) = '$name' AND u.pass = '$dbpassword' AND u.status = 1";
 316     $query = $dbDrupal->query($sql);
 317
 318     $user = NULL;
 319     // need to change this to make sure we matched only one row
 320     while ($row = $query->fetchRow(DB_FETCHMODE_ASSOC)) {
 321       CRM_Core_BAO_UFMatch::synchronizeUFMatch($user, $row['uid'], $row['mail'], 'Drupal');
 322       $contactID = CRM_Core_BAO_UFMatch::getContactId($row['uid']);
 323       if (!$contactID) {
 324         return FALSE;
 325       }
 326       else {
 327         //success
 328         if ($loadCMSBootstrap) {
 329           $bootStrapParams = array();
 330           if ($name && $password) {
 331             $bootStrapParams = array(
 332               'name' => $name,
 333               'pass' => $password,
 334             );
 335           }
 336           CRM_Utils_System::loadBootStrap($bootStrapParams, TRUE, TRUE, $realPath);
 337         }
 338         return array($contactID, $row['uid'], mt_rand());
 339       }
 340     }
 341     return FALSE;
 342   }
 343
 344   /**
 345    * @inheritDoc
 346    */
 347   public function loadUser($username) {
 348     global $user;
 349     $user = user_load(array('name' => $username));
 350     if (empty($user->uid)) {
 351       return FALSE;
 352     }
 353
 354     $uid = $user->uid;
 355     $contact_id = CRM_Core_BAO_UFMatch::getContactId($uid);
 356
 357     // lets store contact id and user id in session
 358     $session = CRM_Core_Session::singleton();
 359     $session->set('ufID', $uid);
 360     $session->set('userID', $contact_id);
 361     return TRUE;
 362   }
 363
 364   /**
 365    * Perform any post login activities required by the UF -
 366    * e.g. for drupal : records a watchdog message about the new session,
 367    * saves the login timestamp, calls hook_user op 'login' and generates a new session.
 368    *
 369    * @param array $params
 370    *
 371    * FIXME: Document values accepted/required by $params
 372    */
 373   public function userLoginFinalize($params = array()) {
 374     user_authenticate_finalize($params);
 375   }
 376
 377   /**
 378    * Determine the native ID of the CMS user.
 379    *
 380    * @param string $username
 381    * @return int|NULL
 382    */
 383   public function getUfId($username) {
 384     $user = user_load(array('name' => $username));
 385     if (empty($user->uid)) {
 386       return NULL;
 387     }
 388     return $user->uid;
 389   }
 390
 391   /**
 392    * @inheritDoc
 393    */
 394   public function logout() {
 395     module_load_include('inc', 'user', 'user.pages');
 396     return user_logout();
 397   }
 398
 399   /**
 400    * Load drupal bootstrap.
 401    *
 402    * @param array $params
 403    *   Either uid, or name & pass.
 404    * @param bool $loadUser
 405    *   Boolean Require CMS user load.
 406    * @param bool $throwError
 407    *   If true, print error on failure and exit.
 408    * @param bool|string $realPath path to script
 409    *
 410    * @return bool
 411    */
 412   public function loadBootStrap($params = array(), $loadUser = TRUE, $throwError = TRUE, $realPath = NULL) {
 413     //take the cms root path.
 414     $cmsPath = $this->cmsRootPath($realPath);
 415
 416     if (!file_exists("$cmsPath/includes/bootstrap.inc")) {
 417       if ($throwError) {
 418         echo '<br />Sorry, could not locate bootstrap.inc\n';
 419         exit();
 420       }
 421       return FALSE;
 422     }
 423     // load drupal bootstrap
 424     chdir($cmsPath);
 425     define('DRUPAL_ROOT', $cmsPath);
 426
 427     // For drupal multi-site CRM-11313
 428     if ($realPath && strpos($realPath, 'sites/all/modules/') === FALSE) {
 429       preg_match('@sites/([^/]*)/modules@s', $realPath, $matches);
 430       if (!empty($matches[1])) {
 431         $_SERVER['HTTP_HOST'] = $matches[1];
 432       }
 433     }
 434     require_once 'includes/bootstrap.inc';
 435     // @ to suppress notices eg 'DRUPALFOO already defined'.
 436     @drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
 437
 438     // explicitly setting error reporting, since we cannot handle drupal related notices
 439     error_reporting(1);
 440     if (!function_exists('module_exists') || !module_exists('civicrm')) {
 441       if ($throwError) {
 442         echo '<br />Sorry, could not load drupal bootstrap.';
 443         exit();
 444       }
 445       return FALSE;
 446     }
 447
 448     // seems like we've bootstrapped drupal
 449     $config = CRM_Core_Config::singleton();
 450
 451     // lets also fix the clean url setting
 452     // CRM-6948
 453     $config->cleanURL = (int) variable_get('clean_url', '0');
 454
 455     // we need to call the config hook again, since we now know
 456     // all the modules that are listening on it, does not apply
 457     // to J! and WP as yet
 458     // CRM-8655
 459     CRM_Utils_Hook::config($config);
 460
 461     if (!$loadUser) {
 462       return TRUE;
 463     }
 464     global $user;
 465     // If $uid is passed in, authentication has been done already.
 466     $uid = CRM_Utils_Array::value('uid', $params);
 467     if (!$uid) {
 468       //load user, we need to check drupal permissions.
 469       $name = CRM_Utils_Array::value('name', $params, FALSE) ? $params['name'] : trim(CRM_Utils_Array::value('name', $_REQUEST));
 470       $pass = CRM_Utils_Array::value('pass', $params, FALSE) ? $params['pass'] : trim(CRM_Utils_Array::value('pass', $_REQUEST));
 471
 472       if ($name) {
 473         $user = user_authenticate(array('name' => $name, 'pass' => $pass));
 474         if (!$user->uid) {
 475           if ($throwError) {
 476             echo '<br />Sorry, unrecognized username or password.';
 477             exit();
 478           }
 479           return FALSE;
 480         }
 481         else {
 482           return TRUE;
 483         }
 484       }
 485     }
 486
 487     if ($uid) {
 488       $account = user_load($uid);
 489       if ($account && $account->uid) {
 490         $user = $account;
 491         return TRUE;
 492       }
 493     }
 494
 495     if ($throwError) {
 496       echo '<br />Sorry, can not load CMS user account.';
 497       exit();
 498     }
 499
 500     // CRM-6948: When using loadBootStrap, it's implicit that CiviCRM has already loaded its settings
 501     // which means that define(CIVICRM_CLEANURL) was correctly set.
 502     // So we correct it
 503     $config = CRM_Core_Config::singleton();
 504     $config->cleanURL = (int) variable_get('clean_url', '0');
 505
 506     // CRM-8655: Drupal wasn't available during bootstrap, so hook_civicrm_config never executes
 507     CRM_Utils_Hook::config($config);
 508
 509     return FALSE;
 510   }
 511
 512   /**
 513    */
 514   public function cmsRootPath($scriptFilename = NULL) {
 515     $cmsRoot = $valid = NULL;
 516
 517     if (!is_null($scriptFilename)) {
 518       $path = $scriptFilename;
 519     }
 520     else {
 521       $path = $_SERVER['SCRIPT_FILENAME'];
 522     }
 523
 524     if (function_exists('drush_get_context')) {
 525       // drush anyway takes care of multisite install etc
 526       return drush_get_context('DRUSH_DRUPAL_ROOT');
 527     }
 528     // CRM-7582
 529     $pathVars = explode('/',
 530       str_replace('//', '/',
 531         str_replace('\\', '/', $path)
 532       )
 533     );
 534
 535     //lets store first var,
 536     //need to get back for windows.
 537     $firstVar = array_shift($pathVars);
 538
 539     //lets remove sript name to reduce one iteration.
 540     array_pop($pathVars);
 541
 542     //CRM-7429 --do check for upper most 'includes' dir,
 543     //which would effectually work for multisite installation.
 544     do {
 545       $cmsRoot = $firstVar . '/' . implode('/', $pathVars);
 546       $cmsIncludePath = "$cmsRoot/includes";
 547       // Stop if we found bootstrap.
 548       if (file_exists("$cmsIncludePath/bootstrap.inc")) {
 549         $valid = TRUE;
 550         break;
 551       }
 552       //remove one directory level.
 553       array_pop($pathVars);
 554     } while (count($pathVars));
 555
 556     return ($valid) ? $cmsRoot : NULL;
 557   }
 558
 559   /**
 560    * @inheritDoc
 561    */
 562   public function isUserLoggedIn() {
 563     $isloggedIn = FALSE;
 564     if (function_exists('user_is_logged_in')) {
 565       $isloggedIn = user_is_logged_in();
 566     }
 567
 568     return $isloggedIn;
 569   }
 570
 571   /**
 572    * @inheritDoc
 573    */
 574   public function getLoggedInUfID() {
 575     $ufID = NULL;
 576     if (function_exists('user_is_logged_in') &&
 577       user_is_logged_in() &&
 578       function_exists('user_uid_optional_to_arg')
 579     ) {
 580       $ufID = user_uid_optional_to_arg(array());
 581     }
 582
 583     return $ufID;
 584   }
 585
 586   /**
 587    * @inheritDoc
 588    */
 589   public function languageNegotiationURL($url, $addLanguagePart = TRUE, $removeLanguagePart = FALSE) {
 590     if (empty($url)) {
 591       return $url;
 592     }
 593
 594     //upto d6 only, already we have code in place for d7
 595     $config = CRM_Core_Config::singleton();
 596     if (function_exists('variable_get') &&
 597       module_exists('locale')
 598     ) {
 599       global $language;
 600
 601       //get the mode.
 602       $mode = variable_get('language_negotiation', LANGUAGE_NEGOTIATION_NONE);
 603
 604       //url prefix / path.
 605       if (isset($language->prefix) &&
 606         $language->prefix &&
 607         in_array($mode, array(
 608           LANGUAGE_NEGOTIATION_PATH,
 609           LANGUAGE_NEGOTIATION_PATH_DEFAULT,
 610         ))
 611       ) {
 612
 613         if ($addLanguagePart) {
 614           $url .= $language->prefix . '/';
 615         }
 616         if ($removeLanguagePart) {
 617           $url = str_replace("/{$language->prefix}/", '/', $url);
 618         }
 619       }
 620       if (isset($language->domain) &&
 621         $language->domain &&
 622         $mode == LANGUAGE_NEGOTIATION_DOMAIN
 623       ) {
 624
 625         if ($addLanguagePart) {
 626           $url = CRM_Utils_File::addTrailingSlash($language->domain, '/');
 627         }
 628         if ($removeLanguagePart && defined('CIVICRM_UF_BASEURL')) {
 629           $url = str_replace('\\', '/', $url);
 630           $parseUrl = parse_url($url);
 631
 632           //kinda hackish but not sure how to do it right
 633           //hope http_build_url() will help at some point.
 634           if (is_array($parseUrl) && !empty($parseUrl)) {
 635             $urlParts = explode('/', $url);
 636             $hostKey = array_search($parseUrl['host'], $urlParts);
 637             $ufUrlParts = parse_url(CIVICRM_UF_BASEURL);
 638             $urlParts[$hostKey] = $ufUrlParts['host'];
 639             $url = implode('/', $urlParts);
 640           }
 641         }
 642       }
 643     }
 644
 645     return $url;
 646   }
 647
 648   /**
 649    * Find any users/roles/security-principals with the given permission
 650    * and replace it with one or more permissions.
 651    *
 652    * @param string $oldPerm
 653    * @param array $newPerms
 654    *   Array, strings.
 655    *
 656    * @return void
 657    */
 658   public function replacePermission($oldPerm, $newPerms) {
 659     $roles = user_roles(FALSE, $oldPerm);
 660     foreach ($roles as $rid => $roleName) {
 661       $permList = db_result(db_query('SELECT perm FROM {permission} WHERE rid = %d', $rid));
 662       $perms = drupal_map_assoc(explode(', ', $permList));
 663       unset($perms[$oldPerm]);
 664       $perms = $perms + drupal_map_assoc($newPerms);
 665       $permList = implode(', ', $perms);
 666       db_query('UPDATE {permission} SET perm = "%s" WHERE rid = %d', $permList, $rid);
 667       /* @codingStandardsIgnoreStart
 668         if ( ! empty( $roles ) ) {
 669             $rids = implode(',', array_keys($roles));
 670             db_query( 'UPDATE {permission} SET perm = CONCAT( perm, \', edit all events\') WHERE rid IN (' . implode(',', array_keys($roles)) . ')' );
 671             db_query( "UPDATE {permission} SET perm = REPLACE( perm, '%s', '%s' ) WHERE rid IN ($rids)",
 672                 $oldPerm, implode(', ', $newPerms) );
 673       @codingStandardsIgnoreEnd */
 674     }
 675   }
 676
 677   /**
 678    * @inheritDoc
 679    */
 680   public function getModules() {
 681     $result = array();
 682     $q = db_query('SELECT name, status FROM {system} WHERE type = \'module\' AND schema_version <> -1');
 683     while ($row = db_fetch_object($q)) {
 684       $result[] = new CRM_Core_Module('drupal.' . $row->name, ($row->status == 1) ? TRUE : FALSE);
 685     }
 686     return $result;
 687   }
 688
 689   /**
 690    * @inheritDoc
 691    */
 692   public function getLoginURL($destination = '') {
 693     $config = CRM_Core_Config::singleton();
 694     $loginURL = $config->userFrameworkBaseURL;
 695     $loginURL .= 'user';
 696     if (!empty($destination)) {
 697       // append destination so user is returned to form they came from after login
 698       $loginURL .= '?destination=' . urlencode($destination);
 699     }
 700     return $loginURL;
 701   }
 702
 703   /**
 704    * Wrapper for og_membership creation.
 705    *
 706    * @param int $ogID
 707    *   Organic Group ID.
 708    * @param int $drupalID
 709    *   Drupal User ID.
 710    */
 711   public function og_membership_create($ogID, $drupalID) {
 712     og_save_subscription($ogID, $drupalID, array('is_active' => 1));
 713   }
 714
 715   /**
 716    * Wrapper for og_membership deletion.
 717    *
 718    * @param int $ogID
 719    *   Organic Group ID.
 720    * @param int $drupalID
 721    *   Drupal User ID.
 722    */
 723   public function og_membership_delete($ogID, $drupalID) {
 724     og_delete_subscription($ogID, $drupalID);
 725   }
 726
 727   /**
 728    * @inheritDoc
 729    */
 730   public function getTimeZoneString() {
 731     global $user;
 732     // Note that 0 is a valid timezone (GMT) so we use strlen not empty to check.
 733     if (variable_get('configurable_timezones', 1) && $user->uid && isset($user->timezone) && strlen($user->timezone)) {
 734       $timezone = $user->timezone;
 735     }
 736     else {
 737       $timezone = variable_get('date_default_timezone', NULL);
 738     }
 739     if (!$timezone) {
 740       $timezone = parent::getTimeZoneString();
 741     }
 742     return $timezone;
 743   }
 744
 745 }