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/lib/plugins/authad/ -> auth.php (source)

   1  <?php
   2  
   3  /**
   4   * Active Directory authentication backend for DokuWiki
   5   *
   6   * This makes authentication with a Active Directory server much easier
   7   * than when using the normal LDAP backend by utilizing the adLDAP library
   8   *
   9   * Usage:
  10   *   Set DokuWiki's local.protected.php auth setting to read
  11   *
  12   *   $conf['authtype']       = 'authad';
  13   *
  14   *   $conf['plugin']['authad']['account_suffix']     = '@my.domain.org';
  15   *   $conf['plugin']['authad']['base_dn']            = 'DC=my,DC=domain,DC=org';
  16   *   $conf['plugin']['authad']['domain_controllers'] = 'srv1.domain.org,srv2.domain.org';
  17   *
  18   *   //optional:
  19   *   $conf['plugin']['authad']['sso']                = 1;
  20   *   $conf['plugin']['authad']['admin_username']     = 'root';
  21   *   $conf['plugin']['authad']['admin_password']     = 'pass';
  22   *   $conf['plugin']['authad']['real_primarygroup']  = 1;
  23   *   $conf['plugin']['authad']['use_ssl']            = 1;
  24   *   $conf['plugin']['authad']['use_tls']            = 1;
  25   *   $conf['plugin']['authad']['debug']              = 1;
  26   *   // warn user about expiring password this many days in advance:
  27   *   $conf['plugin']['authad']['expirywarn']         = 5;
  28   *
  29   *   // get additional information to the userinfo array
  30   *   // add a list of comma separated ldap contact fields.
  31   *   $conf['plugin']['authad']['additional'] = 'field1,field2';
  32   *
  33   * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
  34   * @author  James Van Lommel <jamesvl@gmail.com>
  35   * @link    http://www.nosq.com/blog/2005/08/ldap-activedirectory-and-dokuwiki/
  36   * @author  Andreas Gohr <andi@splitbrain.org>
  37   * @author  Jan Schumann <js@schumann-it.com>
  38   */
  39  class auth_plugin_authad extends DokuWiki_Auth_Plugin
  40  {
  41  
  42      /**
  43       * @var array hold connection data for a specific AD domain
  44       */
  45      protected $opts = array();
  46  
  47      /**
  48       * @var array open connections for each AD domain, as adLDAP objects
  49       */
  50      protected $adldap = array();
  51  
  52      /**
  53       * @var bool message state
  54       */
  55      protected $msgshown = false;
  56  
  57      /**
  58       * @var array user listing cache
  59       */
  60      protected $users = array();
  61  
  62      /**
  63       * @var array filter patterns for listing users
  64       */
  65      protected $pattern = array();
  66  
  67      protected $actualstart = 0;
  68  
  69      protected $grpsusers = array();
  70  
  71      /**
  72       * Constructor
  73       */
  74      public function __construct()
  75      {
  76          global $INPUT;
  77          parent::__construct();
  78  
  79          require_once(DOKU_PLUGIN.'authad/adLDAP/adLDAP.php');
  80          require_once(DOKU_PLUGIN.'authad/adLDAP/classes/adLDAPUtils.php');
  81  
  82          // we load the config early to modify it a bit here
  83          $this->loadConfig();
  84  
  85          // additional information fields
  86          if (isset($this->conf['additional'])) {
  87              $this->conf['additional'] = str_replace(' ', '', $this->conf['additional']);
  88              $this->conf['additional'] = explode(',', $this->conf['additional']);
  89          } else $this->conf['additional'] = array();
  90  
  91          // ldap extension is needed
  92          if (!function_exists('ldap_connect')) {
  93              if ($this->conf['debug'])
  94                  msg("AD Auth: PHP LDAP extension not found.", -1);
  95              $this->success = false;
  96              return;
  97          }
  98  
  99          // Prepare SSO
 100          if (!empty($_SERVER['REMOTE_USER'])) {
 101              // make sure the right encoding is used
 102              if ($this->getConf('sso_charset')) {
 103                  $_SERVER['REMOTE_USER'] = iconv($this->getConf('sso_charset'), 'UTF-8', $_SERVER['REMOTE_USER']);
 104              } elseif (!\dokuwiki\Utf8\Clean::isUtf8($_SERVER['REMOTE_USER'])) {
 105                  $_SERVER['REMOTE_USER'] = utf8_encode($_SERVER['REMOTE_USER']);
 106              }
 107  
 108              // trust the incoming user
 109              if ($this->conf['sso']) {
 110                  $_SERVER['REMOTE_USER'] = $this->cleanUser($_SERVER['REMOTE_USER']);
 111  
 112                  // we need to simulate a login
 113                  if (empty($_COOKIE[DOKU_COOKIE])) {
 114                      $INPUT->set('u', $_SERVER['REMOTE_USER']);
 115                      $INPUT->set('p', 'sso_only');
 116                  }
 117              }
 118          }
 119  
 120          // other can do's are changed in $this->_loadServerConfig() base on domain setup
 121          $this->cando['modName'] = (bool)$this->conf['update_name'];
 122          $this->cando['modMail'] = (bool)$this->conf['update_mail'];
 123          $this->cando['getUserCount'] = true;
 124      }
 125  
 126      /**
 127       * Load domain config on capability check
 128       *
 129       * @param string $cap
 130       * @return bool
 131       */
 132      public function canDo($cap)
 133      {
 134          //capabilities depend on config, which may change depending on domain
 135          $domain = $this->getUserDomain($_SERVER['REMOTE_USER']);
 136          $this->loadServerConfig($domain);
 137          return parent::canDo($cap);
 138      }
 139  
 140      /**
 141       * Check user+password [required auth function]
 142       *
 143       * Checks if the given user exists and the given
 144       * plaintext password is correct by trying to bind
 145       * to the LDAP server
 146       *
 147       * @author  James Van Lommel <james@nosq.com>
 148       * @param string $user
 149       * @param string $pass
 150       * @return  bool
 151       */
 152      public function checkPass($user, $pass)
 153      {
 154          if ($_SERVER['REMOTE_USER'] &&
 155              $_SERVER['REMOTE_USER'] == $user &&
 156              $this->conf['sso']
 157          ) return true;
 158  
 159          $adldap = $this->initAdLdap($this->getUserDomain($user));
 160          if (!$adldap) return false;
 161  
 162          try {
 163              return $adldap->authenticate($this->getUserName($user), $pass);
 164          } catch (adLDAPException $e) {
 165              // shouldn't really happen
 166              return false;
 167          }
 168      }
 169  
 170      /**
 171       * Return user info [required auth function]
 172       *
 173       * Returns info about the given user needs to contain
 174       * at least these fields:
 175       *
 176       * name    string  full name of the user
 177       * mail    string  email address of the user
 178       * grps    array   list of groups the user is in
 179       *
 180       * This AD specific function returns the following
 181       * addional fields:
 182       *
 183       * dn         string    distinguished name (DN)
 184       * uid        string    samaccountname
 185       * lastpwd    int       timestamp of the date when the password was set
 186       * expires    true      if the password expires
 187       * expiresin  int       seconds until the password expires
 188       * any fields specified in the 'additional' config option
 189       *
 190       * @author  James Van Lommel <james@nosq.com>
 191       * @param string $user
 192       * @param bool $requireGroups (optional) - ignored, groups are always supplied by this plugin
 193       * @return array
 194       */
 195      public function getUserData($user, $requireGroups = true)
 196      {
 197          global $conf;
 198          global $lang;
 199          global $ID;
 200          $adldap = $this->initAdLdap($this->getUserDomain($user));
 201          if (!$adldap) return array();
 202  
 203          if ($user == '') return array();
 204  
 205          $fields = array('mail', 'displayname', 'samaccountname', 'lastpwd', 'pwdlastset', 'useraccountcontrol');
 206  
 207          // add additional fields to read
 208          $fields = array_merge($fields, $this->conf['additional']);
 209          $fields = array_unique($fields);
 210          $fields = array_filter($fields);
 211  
 212          //get info for given user
 213          $result = $adldap->user()->info($this->getUserName($user), $fields);
 214          if ($result == false) {
 215              return array();
 216          }
 217  
 218          //general user info
 219          $info = array();
 220          $info['name'] = $result[0]['displayname'][0];
 221          $info['mail'] = $result[0]['mail'][0];
 222          $info['uid']  = $result[0]['samaccountname'][0];
 223          $info['dn']   = $result[0]['dn'];
 224          //last password set (Windows counts from January 1st 1601)
 225          $info['lastpwd'] = $result[0]['pwdlastset'][0] / 10000000 - 11644473600;
 226          //will it expire?
 227          $info['expires'] = !($result[0]['useraccountcontrol'][0] & 0x10000); //ADS_UF_DONT_EXPIRE_PASSWD
 228  
 229          // additional information
 230          foreach ($this->conf['additional'] as $field) {
 231              if (isset($result[0][strtolower($field)])) {
 232                  $info[$field] = $result[0][strtolower($field)][0];
 233              }
 234          }
 235  
 236          // handle ActiveDirectory memberOf
 237          $info['grps'] = $adldap->user()->groups($this->getUserName($user), (bool) $this->opts['recursive_groups']);
 238  
 239          if (is_array($info['grps'])) {
 240              foreach ($info['grps'] as $ndx => $group) {
 241                  $info['grps'][$ndx] = $this->cleanGroup($group);
 242              }
 243          }
 244  
 245          // always add the default group to the list of groups
 246          if (!is_array($info['grps']) || !in_array($conf['defaultgroup'], $info['grps'])) {
 247              $info['grps'][] = $conf['defaultgroup'];
 248          }
 249  
 250          // add the user's domain to the groups
 251          $domain = $this->getUserDomain($user);
 252          if ($domain && !in_array("domain-$domain", (array) $info['grps'])) {
 253              $info['grps'][] = $this->cleanGroup("domain-$domain");
 254          }
 255  
 256          // check expiry time
 257          if ($info['expires'] && $this->conf['expirywarn']) {
 258              try {
 259                  $expiry = $adldap->user()->passwordExpiry($user);
 260                  if (is_array($expiry)) {
 261                      $info['expiresat'] = $expiry['expiryts'];
 262                      $info['expiresin'] = round(($info['expiresat'] - time())/(24*60*60));
 263  
 264                      // if this is the current user, warn him (once per request only)
 265                      if (($_SERVER['REMOTE_USER'] == $user) &&
 266                          ($info['expiresin'] <= $this->conf['expirywarn']) &&
 267                          !$this->msgshown
 268                      ) {
 269                          $msg = sprintf($this->getLang('authpwdexpire'), $info['expiresin']);
 270                          if ($this->canDo('modPass')) {
 271                              $url = wl($ID, array('do'=> 'profile'));
 272                              $msg .= ' <a href="'.$url.'">'.$lang['btn_profile'].'</a>';
 273                          }
 274                          msg($msg);
 275                          $this->msgshown = true;
 276                      }
 277                  }
 278              } catch (adLDAPException $e) {
 279                  // ignore. should usually not happen
 280              }
 281          }
 282  
 283          return $info;
 284      }
 285  
 286      /**
 287       * Make AD group names usable by DokuWiki.
 288       *
 289       * Removes backslashes ('\'), pound signs ('#'), and converts spaces to underscores.
 290       *
 291       * @author  James Van Lommel (jamesvl@gmail.com)
 292       * @param string $group
 293       * @return string
 294       */
 295      public function cleanGroup($group)
 296      {
 297          $group = str_replace('\\', '', $group);
 298          $group = str_replace('#', '', $group);
 299          $group = preg_replace('[\s]', '_', $group);
 300          $group = \dokuwiki\Utf8\PhpString::strtolower(trim($group));
 301          return $group;
 302      }
 303  
 304      /**
 305       * Sanitize user names
 306       *
 307       * Normalizes domain parts, does not modify the user name itself (unlike cleanGroup)
 308       *
 309       * @author Andreas Gohr <gohr@cosmocode.de>
 310       * @param string $user
 311       * @return string
 312       */
 313      public function cleanUser($user)
 314      {
 315          $domain = '';
 316  
 317          // get NTLM or Kerberos domain part
 318          list($dom, $user) = explode('\\', $user, 2);
 319          if (!$user) $user = $dom;
 320          if ($dom) $domain = $dom;
 321          list($user, $dom) = explode('@', $user, 2);
 322          if ($dom) $domain = $dom;
 323  
 324          // clean up both
 325          $domain = \dokuwiki\Utf8\PhpString::strtolower(trim($domain));
 326          $user   = \dokuwiki\Utf8\PhpString::strtolower(trim($user));
 327  
 328          // is this a known, valid domain? if not discard
 329          if (!is_array($this->conf[$domain])) {
 330              $domain = '';
 331          }
 332  
 333          // reattach domain
 334          if ($domain) $user = "$user@$domain";
 335          return $user;
 336      }
 337  
 338      /**
 339       * Most values in LDAP are case-insensitive
 340       *
 341       * @return bool
 342       */
 343      public function isCaseSensitive()
 344      {
 345          return false;
 346      }
 347  
 348      /**
 349       * Create a Search-String useable by adLDAPUsers::all($includeDescription = false, $search = "*", $sorted = true)
 350       *
 351       * @param array $filter
 352       * @return string
 353       */
 354      protected function constructSearchString($filter)
 355      {
 356          if (!$filter) {
 357              return '*';
 358          }
 359          $adldapUtils = new adLDAPUtils($this->initAdLdap(null));
 360          $result = '*';
 361          if (isset($filter['name'])) {
 362              $result .= ')(displayname=*' . $adldapUtils->ldapSlashes($filter['name']) . '*';
 363              unset($filter['name']);
 364          }
 365  
 366          if (isset($filter['user'])) {
 367              $result .= ')(samAccountName=*' . $adldapUtils->ldapSlashes($filter['user']) . '*';
 368              unset($filter['user']);
 369          }
 370  
 371          if (isset($filter['mail'])) {
 372              $result .= ')(mail=*' . $adldapUtils->ldapSlashes($filter['mail']) . '*';
 373              unset($filter['mail']);
 374          }
 375          return $result;
 376      }
 377  
 378      /**
 379       * Return a count of the number of user which meet $filter criteria
 380       *
 381       * @param array $filter  $filter array of field/pattern pairs, empty array for no filter
 382       * @return int number of users
 383       */
 384      public function getUserCount($filter = array())
 385      {
 386          $adldap = $this->initAdLdap(null);
 387          if (!$adldap) {
 388              dbglog("authad/auth.php getUserCount(): _adldap not set.");
 389              return -1;
 390          }
 391          if ($filter == array()) {
 392              $result = $adldap->user()->all();
 393          } else {
 394              $searchString = $this->constructSearchString($filter);
 395              $result = $adldap->user()->all(false, $searchString);
 396              if (isset($filter['grps'])) {
 397                  $this->users = array_fill_keys($result, false);
 398                  /** @var admin_plugin_usermanager $usermanager */
 399                  $usermanager = plugin_load("admin", "usermanager", false);
 400                  $usermanager->setLastdisabled(true);
 401                  if (!isset($this->grpsusers[$this->filterToString($filter)])) {
 402                      $this->fillGroupUserArray($filter, $usermanager->getStart() + 3*$usermanager->getPagesize());
 403                  } elseif (count($this->grpsusers[$this->filterToString($filter)]) <
 404                      $usermanager->getStart() + 3*$usermanager->getPagesize()
 405                  ) {
 406                      $this->fillGroupUserArray(
 407                          $filter,
 408                          $usermanager->getStart() +
 409                          3*$usermanager->getPagesize() -
 410                          count($this->grpsusers[$this->filterToString($filter)])
 411                      );
 412                  }
 413                  $result = $this->grpsusers[$this->filterToString($filter)];
 414              } else {
 415                  /** @var admin_plugin_usermanager $usermanager */
 416                  $usermanager = plugin_load("admin", "usermanager", false);
 417                  $usermanager->setLastdisabled(false);
 418              }
 419          }
 420  
 421          if (!$result) {
 422              return 0;
 423          }
 424          return count($result);
 425      }
 426  
 427      /**
 428       *
 429       * create a unique string for each filter used with a group
 430       *
 431       * @param array $filter
 432       * @return string
 433       */
 434      protected function filterToString($filter)
 435      {
 436          $result = '';
 437          if (isset($filter['user'])) {
 438              $result .= 'user-' . $filter['user'];
 439          }
 440          if (isset($filter['name'])) {
 441              $result .= 'name-' . $filter['name'];
 442          }
 443          if (isset($filter['mail'])) {
 444              $result .= 'mail-' . $filter['mail'];
 445          }
 446          if (isset($filter['grps'])) {
 447              $result .= 'grps-' . $filter['grps'];
 448          }
 449          return $result;
 450      }
 451  
 452      /**
 453       * Create an array of $numberOfAdds users passing a certain $filter, including belonging
 454       * to a certain group and save them to a object-wide array. If the array
 455       * already exists try to add $numberOfAdds further users to it.
 456       *
 457       * @param array $filter
 458       * @param int $numberOfAdds additional number of users requested
 459       * @return int number of Users actually add to Array
 460       */
 461      protected function fillGroupUserArray($filter, $numberOfAdds)
 462      {
 463          $this->grpsusers[$this->filterToString($filter)];
 464          $i = 0;
 465          $count = 0;
 466          $this->constructPattern($filter);
 467          foreach ($this->users as $user => &$info) {
 468              if ($i++ < $this->actualstart) {
 469                  continue;
 470              }
 471              if ($info === false) {
 472                  $info = $this->getUserData($user);
 473              }
 474              if ($this->filter($user, $info)) {
 475                  $this->grpsusers[$this->filterToString($filter)][$user] = $info;
 476                  if (($numberOfAdds > 0) && (++$count >= $numberOfAdds)) break;
 477              }
 478          }
 479          $this->actualstart = $i;
 480          return $count;
 481      }
 482  
 483      /**
 484       * Bulk retrieval of user data
 485       *
 486       * @author  Dominik Eckelmann <dokuwiki@cosmocode.de>
 487       *
 488       * @param   int $start index of first user to be returned
 489       * @param   int $limit max number of users to be returned
 490       * @param   array $filter array of field/pattern pairs, null for no filter
 491       * @return array userinfo (refer getUserData for internal userinfo details)
 492       */
 493      public function retrieveUsers($start = 0, $limit = 0, $filter = array())
 494      {
 495          $adldap = $this->initAdLdap(null);
 496          if (!$adldap) return array();
 497  
 498          if (!$this->users) {
 499              //get info for given user
 500              $result = $adldap->user()->all(false, $this->constructSearchString($filter));
 501              if (!$result) return array();
 502              $this->users = array_fill_keys($result, false);
 503          }
 504  
 505          $i     = 0;
 506          $count = 0;
 507          $result = array();
 508  
 509          if (!isset($filter['grps'])) {
 510              /** @var admin_plugin_usermanager $usermanager */
 511              $usermanager = plugin_load("admin", "usermanager", false);
 512              $usermanager->setLastdisabled(false);
 513              $this->constructPattern($filter);
 514              foreach ($this->users as $user => &$info) {
 515                  if ($i++ < $start) {
 516                      continue;
 517                  }
 518                  if ($info === false) {
 519                      $info = $this->getUserData($user);
 520                  }
 521                  $result[$user] = $info;
 522                  if (($limit > 0) && (++$count >= $limit)) break;
 523              }
 524          } else {
 525              /** @var admin_plugin_usermanager $usermanager */
 526              $usermanager = plugin_load("admin", "usermanager", false);
 527              $usermanager->setLastdisabled(true);
 528              if (!isset($this->grpsusers[$this->filterToString($filter)]) ||
 529                  count($this->grpsusers[$this->filterToString($filter)]) < ($start+$limit)
 530              ) {
 531                  $this->fillGroupUserArray(
 532                      $filter,
 533                      $start+$limit - count($this->grpsusers[$this->filterToString($filter)]) +1
 534                  );
 535              }
 536              if (!$this->grpsusers[$this->filterToString($filter)]) return array();
 537              foreach ($this->grpsusers[$this->filterToString($filter)] as $user => &$info) {
 538                  if ($i++ < $start) {
 539                      continue;
 540                  }
 541                  $result[$user] = $info;
 542                  if (($limit > 0) && (++$count >= $limit)) break;
 543              }
 544          }
 545          return $result;
 546      }
 547  
 548      /**
 549       * Modify user data
 550       *
 551       * @param   string $user      nick of the user to be changed
 552       * @param   array  $changes   array of field/value pairs to be changed
 553       * @return  bool
 554       */
 555      public function modifyUser($user, $changes)
 556      {
 557          $return = true;
 558          $adldap = $this->initAdLdap($this->getUserDomain($user));
 559          if (!$adldap) {
 560              msg($this->getLang('connectfail'), -1);
 561              return false;
 562          }
 563  
 564          // password changing
 565          if (isset($changes['pass'])) {
 566              try {
 567                  $return = $adldap->user()->password($this->getUserName($user), $changes['pass']);
 568              } catch (adLDAPException $e) {
 569                  if ($this->conf['debug']) msg('AD Auth: '.$e->getMessage(), -1);
 570                  $return = false;
 571              }
 572              if (!$return) msg($this->getLang('passchangefail'), -1);
 573          }
 574  
 575          // changing user data
 576          $adchanges = array();
 577          if (isset($changes['name'])) {
 578              // get first and last name
 579              $parts                     = explode(' ', $changes['name']);
 580              $adchanges['surname']      = array_pop($parts);
 581              $adchanges['firstname']    = join(' ', $parts);
 582              $adchanges['display_name'] = $changes['name'];
 583          }
 584          if (isset($changes['mail'])) {
 585              $adchanges['email'] = $changes['mail'];
 586          }
 587          if (count($adchanges)) {
 588              try {
 589                  $return = $return & $adldap->user()->modify($this->getUserName($user), $adchanges);
 590              } catch (adLDAPException $e) {
 591                  if ($this->conf['debug']) msg('AD Auth: '.$e->getMessage(), -1);
 592                  $return = false;
 593              }
 594              if (!$return) msg($this->getLang('userchangefail'), -1);
 595          }
 596  
 597          return $return;
 598      }
 599  
 600      /**
 601       * Initialize the AdLDAP library and connect to the server
 602       *
 603       * When you pass null as domain, it will reuse any existing domain.
 604       * Eg. the one of the logged in user. It falls back to the default
 605       * domain if no current one is available.
 606       *
 607       * @param string|null $domain The AD domain to use
 608       * @return adLDAP|bool true if a connection was established
 609       */
 610      protected function initAdLdap($domain)
 611      {
 612          if (is_null($domain) && is_array($this->opts)) {
 613              $domain = $this->opts['domain'];
 614          }
 615  
 616          $this->opts = $this->loadServerConfig((string) $domain);
 617          if (isset($this->adldap[$domain])) return $this->adldap[$domain];
 618  
 619          // connect
 620          try {
 621              $this->adldap[$domain] = new adLDAP($this->opts);
 622              return $this->adldap[$domain];
 623          } catch (Exception $e) {
 624              if ($this->conf['debug']) {
 625                  msg('AD Auth: '.$e->getMessage(), -1);
 626              }
 627              $this->success         = false;
 628              $this->adldap[$domain] = null;
 629          }
 630          return false;
 631      }
 632  
 633      /**
 634       * Get the domain part from a user
 635       *
 636       * @param string $user
 637       * @return string
 638       */
 639      public function getUserDomain($user)
 640      {
 641          list(, $domain) = explode('@', $user, 2);
 642          return $domain;
 643      }
 644  
 645      /**
 646       * Get the user part from a user
 647       *
 648       * @param string $user
 649       * @return string
 650       */
 651      public function getUserName($user)
 652      {
 653          list($name) = explode('@', $user, 2);
 654          return $name;
 655      }
 656  
 657      /**
 658       * Fetch the configuration for the given AD domain
 659       *
 660       * @param string $domain current AD domain
 661       * @return array
 662       */
 663      protected function loadServerConfig($domain)
 664      {
 665          // prepare adLDAP standard configuration
 666          $opts = $this->conf;
 667  
 668          $opts['domain'] = $domain;
 669  
 670          // add possible domain specific configuration
 671          if ($domain && is_array($this->conf[$domain])) foreach ($this->conf[$domain] as $key => $val) {
 672              $opts[$key] = $val;
 673          }
 674  
 675          // handle multiple AD servers
 676          $opts['domain_controllers'] = explode(',', $opts['domain_controllers']);
 677          $opts['domain_controllers'] = array_map('trim', $opts['domain_controllers']);
 678          $opts['domain_controllers'] = array_filter($opts['domain_controllers']);
 679  
 680          // compatibility with old option name
 681          if (empty($opts['admin_username']) && !empty($opts['ad_username'])) {
 682              $opts['admin_username'] = $opts['ad_username'];
 683          }
 684          if (empty($opts['admin_password']) && !empty($opts['ad_password'])) {
 685              $opts['admin_password'] = $opts['ad_password'];
 686          }
 687          $opts['admin_password'] = conf_decodeString($opts['admin_password']); // deobfuscate
 688  
 689          // we can change the password if SSL is set
 690          if ($opts['use_ssl'] || $opts['use_tls']) {
 691              $this->cando['modPass'] = true;
 692          } else {
 693              $this->cando['modPass'] = false;
 694          }
 695  
 696          // adLDAP expects empty user/pass as NULL, we're less strict FS#2781
 697          if (empty($opts['admin_username'])) $opts['admin_username'] = null;
 698          if (empty($opts['admin_password'])) $opts['admin_password'] = null;
 699  
 700          // user listing needs admin priviledges
 701          if (!empty($opts['admin_username']) && !empty($opts['admin_password'])) {
 702              $this->cando['getUsers'] = true;
 703          } else {
 704              $this->cando['getUsers'] = false;
 705          }
 706  
 707          return $opts;
 708      }
 709  
 710      /**
 711       * Returns a list of configured domains
 712       *
 713       * The default domain has an empty string as key
 714       *
 715       * @return array associative array(key => domain)
 716       */
 717      public function getConfiguredDomains()
 718      {
 719          $domains = array();
 720          if (empty($this->conf['account_suffix'])) return $domains; // not configured yet
 721  
 722          // add default domain, using the name from account suffix
 723          $domains[''] = ltrim($this->conf['account_suffix'], '@');
 724  
 725          // find additional domains
 726          foreach ($this->conf as $key => $val) {
 727              if (is_array($val) && isset($val['account_suffix'])) {
 728                  $domains[$key] = ltrim($val['account_suffix'], '@');
 729              }
 730          }
 731          ksort($domains);
 732  
 733          return $domains;
 734      }
 735  
 736      /**
 737       * Check provided user and userinfo for matching patterns
 738       *
 739       * The patterns are set up with $this->_constructPattern()
 740       *
 741       * @author Chris Smith <chris@jalakai.co.uk>
 742       *
 743       * @param string $user
 744       * @param array  $info
 745       * @return bool
 746       */
 747      protected function filter($user, $info)
 748      {
 749          foreach ($this->pattern as $item => $pattern) {
 750              if ($item == 'user') {
 751                  if (!preg_match($pattern, $user)) return false;
 752              } elseif ($item == 'grps') {
 753                  if (!count(preg_grep($pattern, $info['grps']))) return false;
 754              } else {
 755                  if (!preg_match($pattern, $info[$item])) return false;
 756              }
 757          }
 758          return true;
 759      }
 760  
 761      /**
 762       * Create a pattern for $this->_filter()
 763       *
 764       * @author Chris Smith <chris@jalakai.co.uk>
 765       *
 766       * @param array $filter
 767       */
 768      protected function constructPattern($filter)
 769      {
 770          $this->pattern = array();
 771          foreach ($filter as $item => $pattern) {
 772              $this->pattern[$item] = '/'.str_replace('/', '\/', $pattern).'/i'; // allow regex characters
 773          }
 774      }
 775  }