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   1  <?php
   2  use dokuwiki\Utf8\Sort;
   3  
   4  /**
   5   * Active Directory authentication backend for DokuWiki
   6   *
   7   * This makes authentication with a Active Directory server much easier
   8   * than when using the normal LDAP backend by utilizing the adLDAP library
   9   *
  10   * Usage:
  11   *   Set DokuWiki's local.protected.php auth setting to read
  12   *
  13   *   $conf['authtype']       = 'authad';
  14   *
  15   *   $conf['plugin']['authad']['account_suffix']     = '@my.domain.org';
  16   *   $conf['plugin']['authad']['base_dn']            = 'DC=my,DC=domain,DC=org';
  17   *   $conf['plugin']['authad']['domain_controllers'] = 'srv1.domain.org,srv2.domain.org';
  18   *
  19   *   //optional:
  20   *   $conf['plugin']['authad']['sso']                = 1;
  21   *   $conf['plugin']['authad']['admin_username']     = 'root';
  22   *   $conf['plugin']['authad']['admin_password']     = 'pass';
  23   *   $conf['plugin']['authad']['real_primarygroup']  = 1;
  24   *   $conf['plugin']['authad']['use_ssl']            = 1;
  25   *   $conf['plugin']['authad']['use_tls']            = 1;
  26   *   $conf['plugin']['authad']['debug']              = 1;
  27   *   // warn user about expiring password this many days in advance:
  28   *   $conf['plugin']['authad']['expirywarn']         = 5;
  29   *
  30   *   // get additional information to the userinfo array
  31   *   // add a list of comma separated ldap contact fields.
  32   *   $conf['plugin']['authad']['additional'] = 'field1,field2';
  33   *
  34   * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
  35   * @author  James Van Lommel <jamesvl@gmail.com>
  36   * @link    http://www.nosq.com/blog/2005/08/ldap-activedirectory-and-dokuwiki/
  37   * @author  Andreas Gohr <andi@splitbrain.org>
  38   * @author  Jan Schumann <js@schumann-it.com>
  39   */
  40  class auth_plugin_authad extends DokuWiki_Auth_Plugin
  41  {
  42  
  43      /**
  44       * @var array hold connection data for a specific AD domain
  45       */
  46      protected $opts = array();
  47  
  48      /**
  49       * @var array open connections for each AD domain, as adLDAP objects
  50       */
  51      protected $adldap = array();
  52  
  53      /**
  54       * @var bool message state
  55       */
  56      protected $msgshown = false;
  57  
  58      /**
  59       * @var array user listing cache
  60       */
  61      protected $users = array();
  62  
  63      /**
  64       * @var array filter patterns for listing users
  65       */
  66      protected $pattern = array();
  67  
  68      protected $grpsusers = array();
  69  
  70      /**
  71       * Constructor
  72       */
  73      public function __construct()
  74      {
  75          global $INPUT;
  76          parent::__construct();
  77  
  78          require_once(DOKU_PLUGIN.'authad/adLDAP/adLDAP.php');
  79          require_once(DOKU_PLUGIN.'authad/adLDAP/classes/adLDAPUtils.php');
  80  
  81          // we load the config early to modify it a bit here
  82          $this->loadConfig();
  83  
  84          // additional information fields
  85          if (isset($this->conf['additional'])) {
  86              $this->conf['additional'] = str_replace(' ', '', $this->conf['additional']);
  87              $this->conf['additional'] = explode(',', $this->conf['additional']);
  88          } else $this->conf['additional'] = array();
  89  
  90          // ldap extension is needed
  91          if (!function_exists('ldap_connect')) {
  92              if ($this->conf['debug'])
  93                  msg("AD Auth: PHP LDAP extension not found.", -1);
  94              $this->success = false;
  95              return;
  96          }
  97  
  98          // Prepare SSO
  99          if (!empty($_SERVER['REMOTE_USER'])) {
 100              // make sure the right encoding is used
 101              if ($this->getConf('sso_charset')) {
 102                  $_SERVER['REMOTE_USER'] = iconv($this->getConf('sso_charset'), 'UTF-8', $_SERVER['REMOTE_USER']);
 103              } elseif (!\dokuwiki\Utf8\Clean::isUtf8($_SERVER['REMOTE_USER'])) {
 104                  $_SERVER['REMOTE_USER'] = utf8_encode($_SERVER['REMOTE_USER']);
 105              }
 106  
 107              // trust the incoming user
 108              if ($this->conf['sso']) {
 109                  $_SERVER['REMOTE_USER'] = $this->cleanUser($_SERVER['REMOTE_USER']);
 110  
 111                  // we need to simulate a login
 112                  if (empty($_COOKIE[DOKU_COOKIE])) {
 113                      $INPUT->set('u', $_SERVER['REMOTE_USER']);
 114                      $INPUT->set('p', 'sso_only');
 115                  }
 116              }
 117          }
 118  
 119          // other can do's are changed in $this->_loadServerConfig() base on domain setup
 120          $this->cando['modName'] = (bool)$this->conf['update_name'];
 121          $this->cando['modMail'] = (bool)$this->conf['update_mail'];
 122          $this->cando['getUserCount'] = true;
 123      }
 124  
 125      /**
 126       * Load domain config on capability check
 127       *
 128       * @param string $cap
 129       * @return bool
 130       */
 131      public function canDo($cap)
 132      {
 133          //capabilities depend on config, which may change depending on domain
 134          $domain = $this->getUserDomain($_SERVER['REMOTE_USER']);
 135          $this->loadServerConfig($domain);
 136          return parent::canDo($cap);
 137      }
 138  
 139      /**
 140       * Check user+password [required auth function]
 141       *
 142       * Checks if the given user exists and the given
 143       * plaintext password is correct by trying to bind
 144       * to the LDAP server
 145       *
 146       * @author  James Van Lommel <james@nosq.com>
 147       * @param string $user
 148       * @param string $pass
 149       * @return  bool
 150       */
 151      public function checkPass($user, $pass)
 152      {
 153          if ($_SERVER['REMOTE_USER'] &&
 154              $_SERVER['REMOTE_USER'] == $user &&
 155              $this->conf['sso']
 156          ) return true;
 157  
 158          $adldap = $this->initAdLdap($this->getUserDomain($user));
 159          if (!$adldap) return false;
 160  
 161          try {
 162              return $adldap->authenticate($this->getUserName($user), $pass);
 163          } catch (adLDAPException $e) {
 164              // shouldn't really happen
 165              return false;
 166          }
 167      }
 168  
 169      /**
 170       * Return user info [required auth function]
 171       *
 172       * Returns info about the given user needs to contain
 173       * at least these fields:
 174       *
 175       * name    string  full name of the user
 176       * mail    string  email address of the user
 177       * grps    array   list of groups the user is in
 178       *
 179       * This AD specific function returns the following
 180       * addional fields:
 181       *
 182       * dn         string    distinguished name (DN)
 183       * uid        string    samaccountname
 184       * lastpwd    int       timestamp of the date when the password was set
 185       * expires    true      if the password expires
 186       * expiresin  int       seconds until the password expires
 187       * any fields specified in the 'additional' config option
 188       *
 189       * @author  James Van Lommel <james@nosq.com>
 190       * @param string $user
 191       * @param bool $requireGroups (optional) - ignored, groups are always supplied by this plugin
 192       * @return array
 193       */
 194      public function getUserData($user, $requireGroups = true)
 195      {
 196          global $conf;
 197          global $lang;
 198          global $ID;
 199          $adldap = $this->initAdLdap($this->getUserDomain($user));
 200          if (!$adldap) return array();
 201  
 202          if ($user == '') return array();
 203  
 204          $fields = array('mail', 'displayname', 'samaccountname', 'lastpwd', 'pwdlastset', 'useraccountcontrol');
 205  
 206          // add additional fields to read
 207          $fields = array_merge($fields, $this->conf['additional']);
 208          $fields = array_unique($fields);
 209          $fields = array_filter($fields);
 210  
 211          //get info for given user
 212          $result = $adldap->user()->info($this->getUserName($user), $fields);
 213          if ($result == false) {
 214              return array();
 215          }
 216  
 217          //general user info
 218          $info = array();
 219          $info['name'] = $result[0]['displayname'][0];
 220          $info['mail'] = $result[0]['mail'][0];
 221          $info['uid']  = $result[0]['samaccountname'][0];
 222          $info['dn']   = $result[0]['dn'];
 223          //last password set (Windows counts from January 1st 1601)
 224          $info['lastpwd'] = $result[0]['pwdlastset'][0] / 10000000 - 11644473600;
 225          //will it expire?
 226          $info['expires'] = !($result[0]['useraccountcontrol'][0] & 0x10000); //ADS_UF_DONT_EXPIRE_PASSWD
 227  
 228          // additional information
 229          foreach ($this->conf['additional'] as $field) {
 230              if (isset($result[0][strtolower($field)])) {
 231                  $info[$field] = $result[0][strtolower($field)][0];
 232              }
 233          }
 234  
 235          // handle ActiveDirectory memberOf
 236          $info['grps'] = $adldap->user()->groups($this->getUserName($user), (bool) $this->opts['recursive_groups']);
 237  
 238          if (is_array($info['grps'])) {
 239              foreach ($info['grps'] as $ndx => $group) {
 240                  $info['grps'][$ndx] = $this->cleanGroup($group);
 241              }
 242          }
 243  
 244          // always add the default group to the list of groups
 245          if (!is_array($info['grps']) || !in_array($conf['defaultgroup'], $info['grps'])) {
 246              $info['grps'][] = $conf['defaultgroup'];
 247          }
 248  
 249          // add the user's domain to the groups
 250          $domain = $this->getUserDomain($user);
 251          if ($domain && !in_array("domain-$domain", (array) $info['grps'])) {
 252              $info['grps'][] = $this->cleanGroup("domain-$domain");
 253          }
 254  
 255          // check expiry time
 256          if ($info['expires'] && $this->conf['expirywarn']) {
 257              try {
 258                  $expiry = $adldap->user()->passwordExpiry($user);
 259                  if (is_array($expiry)) {
 260                      $info['expiresat'] = $expiry['expiryts'];
 261                      $info['expiresin'] = round(($info['expiresat'] - time())/(24*60*60));
 262  
 263                      // if this is the current user, warn him (once per request only)
 264                      if (($_SERVER['REMOTE_USER'] == $user) &&
 265                          ($info['expiresin'] <= $this->conf['expirywarn']) &&
 266                          !$this->msgshown
 267                      ) {
 268                          $msg = sprintf($this->getLang('authpwdexpire'), $info['expiresin']);
 269                          if ($this->canDo('modPass')) {
 270                              $url = wl($ID, array('do'=> 'profile'));
 271                              $msg .= ' <a href="'.$url.'">'.$lang['btn_profile'].'</a>';
 272                          }
 273                          msg($msg);
 274                          $this->msgshown = true;
 275                      }
 276                  }
 277              } catch (adLDAPException $e) {
 278                  // ignore. should usually not happen
 279              }
 280          }
 281  
 282          return $info;
 283      }
 284  
 285      /**
 286       * Make AD group names usable by DokuWiki.
 287       *
 288       * Removes backslashes ('\'), pound signs ('#'), and converts spaces to underscores.
 289       *
 290       * @author  James Van Lommel (jamesvl@gmail.com)
 291       * @param string $group
 292       * @return string
 293       */
 294      public function cleanGroup($group)
 295      {
 296          $group = str_replace('\\', '', $group);
 297          $group = str_replace('#', '', $group);
 298          $group = preg_replace('[\s]', '_', $group);
 299          $group = \dokuwiki\Utf8\PhpString::strtolower(trim($group));
 300          return $group;
 301      }
 302  
 303      /**
 304       * Sanitize user names
 305       *
 306       * Normalizes domain parts, does not modify the user name itself (unlike cleanGroup)
 307       *
 308       * @author Andreas Gohr <gohr@cosmocode.de>
 309       * @param string $user
 310       * @return string
 311       */
 312      public function cleanUser($user)
 313      {
 314          $domain = '';
 315  
 316          // get NTLM or Kerberos domain part
 317          list($dom, $user) = explode('\\', $user, 2);
 318          if (!$user) $user = $dom;
 319          if ($dom) $domain = $dom;
 320          list($user, $dom) = explode('@', $user, 2);
 321          if ($dom) $domain = $dom;
 322  
 323          // clean up both
 324          $domain = \dokuwiki\Utf8\PhpString::strtolower(trim($domain));
 325          $user   = \dokuwiki\Utf8\PhpString::strtolower(trim($user));
 326  
 327          // is this a known, valid domain or do we work without account suffix? if not discard
 328          if (!is_array($this->conf[$domain]) && $this->conf['account_suffix'] !== '') {
 329              $domain = '';
 330          }
 331  
 332          // reattach domain
 333          if ($domain) $user = "$user@$domain";
 334          return $user;
 335      }
 336  
 337      /**
 338       * Most values in LDAP are case-insensitive
 339       *
 340       * @return bool
 341       */
 342      public function isCaseSensitive()
 343      {
 344          return false;
 345      }
 346  
 347      /**
 348       * Create a Search-String useable by adLDAPUsers::all($includeDescription = false, $search = "*", $sorted = true)
 349       *
 350       * @param array $filter
 351       * @return string
 352       */
 353      protected function constructSearchString($filter)
 354      {
 355          if (!$filter) {
 356              return '*';
 357          }
 358          $adldapUtils = new adLDAPUtils($this->initAdLdap(null));
 359          $result = '*';
 360          if (isset($filter['name'])) {
 361              $result .= ')(displayname=*' . $adldapUtils->ldapSlashes($filter['name']) . '*';
 362              unset($filter['name']);
 363          }
 364  
 365          if (isset($filter['user'])) {
 366              $result .= ')(samAccountName=*' . $adldapUtils->ldapSlashes($filter['user']) . '*';
 367              unset($filter['user']);
 368          }
 369  
 370          if (isset($filter['mail'])) {
 371              $result .= ')(mail=*' . $adldapUtils->ldapSlashes($filter['mail']) . '*';
 372              unset($filter['mail']);
 373          }
 374          return $result;
 375      }
 376  
 377      /**
 378       * Return a count of the number of user which meet $filter criteria
 379       *
 380       * @param array $filter  $filter array of field/pattern pairs, empty array for no filter
 381       * @return int number of users
 382       */
 383      public function getUserCount($filter = array())
 384      {
 385          $adldap = $this->initAdLdap(null);
 386          if (!$adldap) {
 387              dbglog("authad/auth.php getUserCount(): _adldap not set.");
 388              return -1;
 389          }
 390          if ($filter == array()) {
 391              $result = $adldap->user()->all();
 392          } else {
 393              $searchString = $this->constructSearchString($filter);
 394              $result = $adldap->user()->all(false, $searchString);
 395              if (isset($filter['grps'])) {
 396                  $this->users = array_fill_keys($result, false);
 397                  /** @var admin_plugin_usermanager $usermanager */
 398                  $usermanager = plugin_load("admin", "usermanager", false);
 399                  $usermanager->setLastdisabled(true);
 400                  if (!isset($this->grpsusers[$this->filterToString($filter)])) {
 401                      $this->fillGroupUserArray($filter, $usermanager->getStart() + 3*$usermanager->getPagesize());
 402                  } elseif (count($this->grpsusers[$this->filterToString($filter)]) <
 403                      $usermanager->getStart() + 3*$usermanager->getPagesize()
 404                  ) {
 405                      $this->fillGroupUserArray(
 406                          $filter,
 407                          $usermanager->getStart() +
 408                          3*$usermanager->getPagesize() -
 409                          count($this->grpsusers[$this->filterToString($filter)])
 410                      );
 411                  }
 412                  $result = $this->grpsusers[$this->filterToString($filter)];
 413              } else {
 414                  /** @var admin_plugin_usermanager $usermanager */
 415                  $usermanager = plugin_load("admin", "usermanager", false);
 416                  $usermanager->setLastdisabled(false);
 417              }
 418          }
 419  
 420          if (!$result) {
 421              return 0;
 422          }
 423          return count($result);
 424      }
 425  
 426      /**
 427       *
 428       * create a unique string for each filter used with a group
 429       *
 430       * @param array $filter
 431       * @return string
 432       */
 433      protected function filterToString($filter)
 434      {
 435          $result = '';
 436          if (isset($filter['user'])) {
 437              $result .= 'user-' . $filter['user'];
 438          }
 439          if (isset($filter['name'])) {
 440              $result .= 'name-' . $filter['name'];
 441          }
 442          if (isset($filter['mail'])) {
 443              $result .= 'mail-' . $filter['mail'];
 444          }
 445          if (isset($filter['grps'])) {
 446              $result .= 'grps-' . $filter['grps'];
 447          }
 448          return $result;
 449      }
 450  
 451      /**
 452       * Create an array of $numberOfAdds users passing a certain $filter, including belonging
 453       * to a certain group and save them to a object-wide array. If the array
 454       * already exists try to add $numberOfAdds further users to it.
 455       *
 456       * @param array $filter
 457       * @param int $numberOfAdds additional number of users requested
 458       * @return int number of Users actually add to Array
 459       */
 460      protected function fillGroupUserArray($filter, $numberOfAdds)
 461      {
 462          if (isset($this->grpsusers[$this->filterToString($filter)])) {
 463              $actualstart = count($this->grpsusers[$this->filterToString($filter)]);
 464          } else {
 465              $this->grpsusers[$this->filterToString($filter)] = [];
 466              $actualstart = 0;
 467          }
 468  
 469          $i=0;
 470          $count = 0;
 471          $this->constructPattern($filter);
 472          foreach ($this->users as $user => &$info) {
 473              if ($i++ < $actualstart) {
 474                  continue;
 475              }
 476              if ($info === false) {
 477                  $info = $this->getUserData($user);
 478              }
 479              if ($this->filter($user, $info)) {
 480                  $this->grpsusers[$this->filterToString($filter)][$user] = $info;
 481                  if (($numberOfAdds > 0) && (++$count >= $numberOfAdds)) break;
 482              }
 483          }
 484          return $count;
 485      }
 486  
 487      /**
 488       * Bulk retrieval of user data
 489       *
 490       * @author  Dominik Eckelmann <dokuwiki@cosmocode.de>
 491       *
 492       * @param   int $start index of first user to be returned
 493       * @param   int $limit max number of users to be returned
 494       * @param   array $filter array of field/pattern pairs, null for no filter
 495       * @return array userinfo (refer getUserData for internal userinfo details)
 496       */
 497      public function retrieveUsers($start = 0, $limit = 0, $filter = array())
 498      {
 499          $adldap = $this->initAdLdap(null);
 500          if (!$adldap) return array();
 501  
 502          //if (!$this->users) {
 503              //get info for given user
 504              $result = $adldap->user()->all(false, $this->constructSearchString($filter));
 505              if (!$result) return array();
 506              $this->users = array_fill_keys($result, false);
 507          //}
 508  
 509          $i     = 0;
 510          $count = 0;
 511          $result = array();
 512  
 513          if (!isset($filter['grps'])) {
 514              /** @var admin_plugin_usermanager $usermanager */
 515              $usermanager = plugin_load("admin", "usermanager", false);
 516              $usermanager->setLastdisabled(false);
 517              $this->constructPattern($filter);
 518              foreach ($this->users as $user => &$info) {
 519                  if ($i++ < $start) {
 520                      continue;
 521                  }
 522                  if ($info === false) {
 523                      $info = $this->getUserData($user);
 524                  }
 525                  $result[$user] = $info;
 526                  if (($limit > 0) && (++$count >= $limit)) break;
 527              }
 528          } else {
 529              /** @var admin_plugin_usermanager $usermanager */
 530              $usermanager = plugin_load("admin", "usermanager", false);
 531              $usermanager->setLastdisabled(true);
 532              if (!isset($this->grpsusers[$this->filterToString($filter)]) ||
 533                  count($this->grpsusers[$this->filterToString($filter)]) < ($start+$limit)
 534              ) {
 535                  if(!isset($this->grpsusers[$this->filterToString($filter)])) {
 536                      $this->grpsusers[$this->filterToString($filter)] = [];
 537                  }
 538  
 539                  $this->fillGroupUserArray(
 540                      $filter,
 541                      $start+$limit - count($this->grpsusers[$this->filterToString($filter)]) +1
 542                  );
 543              }
 544              if (!$this->grpsusers[$this->filterToString($filter)]) return array();
 545              foreach ($this->grpsusers[$this->filterToString($filter)] as $user => &$info) {
 546                  if ($i++ < $start) {
 547                      continue;
 548                  }
 549                  $result[$user] = $info;
 550                  if (($limit > 0) && (++$count >= $limit)) break;
 551              }
 552          }
 553          return $result;
 554      }
 555  
 556      /**
 557       * Modify user data
 558       *
 559       * @param   string $user      nick of the user to be changed
 560       * @param   array  $changes   array of field/value pairs to be changed
 561       * @return  bool
 562       */
 563      public function modifyUser($user, $changes)
 564      {
 565          $return = true;
 566          $adldap = $this->initAdLdap($this->getUserDomain($user));
 567          if (!$adldap) {
 568              msg($this->getLang('connectfail'), -1);
 569              return false;
 570          }
 571  
 572          // password changing
 573          if (isset($changes['pass'])) {
 574              try {
 575                  $return = $adldap->user()->password($this->getUserName($user), $changes['pass']);
 576              } catch (adLDAPException $e) {
 577                  if ($this->conf['debug']) msg('AD Auth: '.$e->getMessage(), -1);
 578                  $return = false;
 579              }
 580              if (!$return) msg($this->getLang('passchangefail'), -1);
 581          }
 582  
 583          // changing user data
 584          $adchanges = array();
 585          if (isset($changes['name'])) {
 586              // get first and last name
 587              $parts                     = explode(' ', $changes['name']);
 588              $adchanges['surname']      = array_pop($parts);
 589              $adchanges['firstname']    = join(' ', $parts);
 590              $adchanges['display_name'] = $changes['name'];
 591          }
 592          if (isset($changes['mail'])) {
 593              $adchanges['email'] = $changes['mail'];
 594          }
 595          if (count($adchanges)) {
 596              try {
 597                  $return = $return & $adldap->user()->modify($this->getUserName($user), $adchanges);
 598              } catch (adLDAPException $e) {
 599                  if ($this->conf['debug']) msg('AD Auth: '.$e->getMessage(), -1);
 600                  $return = false;
 601              }
 602              if (!$return) msg($this->getLang('userchangefail'), -1);
 603          }
 604  
 605          return $return;
 606      }
 607  
 608      /**
 609       * Initialize the AdLDAP library and connect to the server
 610       *
 611       * When you pass null as domain, it will reuse any existing domain.
 612       * Eg. the one of the logged in user. It falls back to the default
 613       * domain if no current one is available.
 614       *
 615       * @param string|null $domain The AD domain to use
 616       * @return adLDAP|bool true if a connection was established
 617       */
 618      protected function initAdLdap($domain)
 619      {
 620          if (is_null($domain) && is_array($this->opts)) {
 621              $domain = $this->opts['domain'];
 622          }
 623  
 624          $this->opts = $this->loadServerConfig((string) $domain);
 625          if (isset($this->adldap[$domain])) return $this->adldap[$domain];
 626  
 627          // connect
 628          try {
 629              $this->adldap[$domain] = new adLDAP($this->opts);
 630              return $this->adldap[$domain];
 631          } catch (Exception $e) {
 632              if ($this->conf['debug']) {
 633                  msg('AD Auth: '.$e->getMessage(), -1);
 634              }
 635              $this->success         = false;
 636              $this->adldap[$domain] = null;
 637          }
 638          return false;
 639      }
 640  
 641      /**
 642       * Get the domain part from a user
 643       *
 644       * @param string $user
 645       * @return string
 646       */
 647      public function getUserDomain($user)
 648      {
 649          list(, $domain) = explode('@', $user, 2);
 650          return $domain;
 651      }
 652  
 653      /**
 654       * Get the user part from a user
 655       *
 656       * When an account suffix is set, we strip the domain part from the user
 657       *
 658       * @param string $user
 659       * @return string
 660       */
 661      public function getUserName($user)
 662      {
 663          if ($this->conf['account_suffix'] !== '') {
 664              list($user) = explode('@', $user, 2);
 665          }
 666          return $user;
 667      }
 668  
 669      /**
 670       * Fetch the configuration for the given AD domain
 671       *
 672       * @param string $domain current AD domain
 673       * @return array
 674       */
 675      protected function loadServerConfig($domain)
 676      {
 677          // prepare adLDAP standard configuration
 678          $opts = $this->conf;
 679  
 680          $opts['domain'] = $domain;
 681  
 682          // add possible domain specific configuration
 683          if ($domain && is_array($this->conf[$domain])) foreach ($this->conf[$domain] as $key => $val) {
 684              $opts[$key] = $val;
 685          }
 686  
 687          // handle multiple AD servers
 688          $opts['domain_controllers'] = explode(',', $opts['domain_controllers']);
 689          $opts['domain_controllers'] = array_map('trim', $opts['domain_controllers']);
 690          $opts['domain_controllers'] = array_filter($opts['domain_controllers']);
 691  
 692          // compatibility with old option name
 693          if (empty($opts['admin_username']) && !empty($opts['ad_username'])) {
 694              $opts['admin_username'] = $opts['ad_username'];
 695          }
 696          if (empty($opts['admin_password']) && !empty($opts['ad_password'])) {
 697              $opts['admin_password'] = $opts['ad_password'];
 698          }
 699          $opts['admin_password'] = conf_decodeString($opts['admin_password']); // deobfuscate
 700  
 701          // we can change the password if SSL is set
 702          if ($opts['use_ssl'] || $opts['use_tls']) {
 703              $this->cando['modPass'] = true;
 704          } else {
 705              $this->cando['modPass'] = false;
 706          }
 707  
 708          // adLDAP expects empty user/pass as NULL, we're less strict FS#2781
 709          if (empty($opts['admin_username'])) $opts['admin_username'] = null;
 710          if (empty($opts['admin_password'])) $opts['admin_password'] = null;
 711  
 712          // user listing needs admin priviledges
 713          if (!empty($opts['admin_username']) && !empty($opts['admin_password'])) {
 714              $this->cando['getUsers'] = true;
 715          } else {
 716              $this->cando['getUsers'] = false;
 717          }
 718  
 719          return $opts;
 720      }
 721  
 722      /**
 723       * Returns a list of configured domains
 724       *
 725       * The default domain has an empty string as key
 726       *
 727       * @return array associative array(key => domain)
 728       */
 729      public function getConfiguredDomains()
 730      {
 731          $domains = array();
 732          if (empty($this->conf['account_suffix'])) return $domains; // not configured yet
 733  
 734          // add default domain, using the name from account suffix
 735          $domains[''] = ltrim($this->conf['account_suffix'], '@');
 736  
 737          // find additional domains
 738          foreach ($this->conf as $key => $val) {
 739              if (is_array($val) && isset($val['account_suffix'])) {
 740                  $domains[$key] = ltrim($val['account_suffix'], '@');
 741              }
 742          }
 743          Sort::ksort($domains);
 744  
 745          return $domains;
 746      }
 747  
 748      /**
 749       * Check provided user and userinfo for matching patterns
 750       *
 751       * The patterns are set up with $this->_constructPattern()
 752       *
 753       * @author Chris Smith <chris@jalakai.co.uk>
 754       *
 755       * @param string $user
 756       * @param array  $info
 757       * @return bool
 758       */
 759      protected function filter($user, $info)
 760      {
 761          foreach ($this->pattern as $item => $pattern) {
 762              if ($item == 'user') {
 763                  if (!preg_match($pattern, $user)) return false;
 764              } elseif ($item == 'grps') {
 765                  if (!count(preg_grep($pattern, $info['grps']))) return false;
 766              } else {
 767                  if (!preg_match($pattern, $info[$item])) return false;
 768              }
 769          }
 770          return true;
 771      }
 772  
 773      /**
 774       * Create a pattern for $this->_filter()
 775       *
 776       * @author Chris Smith <chris@jalakai.co.uk>
 777       *
 778       * @param array $filter
 779       */
 780      protected function constructPattern($filter)
 781      {
 782          $this->pattern = array();
 783          foreach ($filter as $item => $pattern) {
 784              $this->pattern[$item] = '/'.str_replace('/', '\/', $pattern).'/i'; // allow regex characters
 785          }
 786      }
 787  }