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 */ 39class 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 or do we work without account suffix? if not discard 329 if (!is_array($this->conf[$domain]) && $this->conf['account_suffix'] !== '') { 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 * When an account suffix is set, we strip the domain part from the user 649 * 650 * @param string $user 651 * @return string 652 */ 653 public function getUserName($user) 654 { 655 if ($this->conf['account_suffix'] !== '') { 656 list($user) = explode('@', $user, 2); 657 } 658 return $user; 659 } 660 661 /** 662 * Fetch the configuration for the given AD domain 663 * 664 * @param string $domain current AD domain 665 * @return array 666 */ 667 protected function loadServerConfig($domain) 668 { 669 // prepare adLDAP standard configuration 670 $opts = $this->conf; 671 672 $opts['domain'] = $domain; 673 674 // add possible domain specific configuration 675 if ($domain && is_array($this->conf[$domain])) foreach ($this->conf[$domain] as $key => $val) { 676 $opts[$key] = $val; 677 } 678 679 // handle multiple AD servers 680 $opts['domain_controllers'] = explode(',', $opts['domain_controllers']); 681 $opts['domain_controllers'] = array_map('trim', $opts['domain_controllers']); 682 $opts['domain_controllers'] = array_filter($opts['domain_controllers']); 683 684 // compatibility with old option name 685 if (empty($opts['admin_username']) && !empty($opts['ad_username'])) { 686 $opts['admin_username'] = $opts['ad_username']; 687 } 688 if (empty($opts['admin_password']) && !empty($opts['ad_password'])) { 689 $opts['admin_password'] = $opts['ad_password']; 690 } 691 $opts['admin_password'] = conf_decodeString($opts['admin_password']); // deobfuscate 692 693 // we can change the password if SSL is set 694 if ($opts['use_ssl'] || $opts['use_tls']) { 695 $this->cando['modPass'] = true; 696 } else { 697 $this->cando['modPass'] = false; 698 } 699 700 // adLDAP expects empty user/pass as NULL, we're less strict FS#2781 701 if (empty($opts['admin_username'])) $opts['admin_username'] = null; 702 if (empty($opts['admin_password'])) $opts['admin_password'] = null; 703 704 // user listing needs admin priviledges 705 if (!empty($opts['admin_username']) && !empty($opts['admin_password'])) { 706 $this->cando['getUsers'] = true; 707 } else { 708 $this->cando['getUsers'] = false; 709 } 710 711 return $opts; 712 } 713 714 /** 715 * Returns a list of configured domains 716 * 717 * The default domain has an empty string as key 718 * 719 * @return array associative array(key => domain) 720 */ 721 public function getConfiguredDomains() 722 { 723 $domains = array(); 724 if (empty($this->conf['account_suffix'])) return $domains; // not configured yet 725 726 // add default domain, using the name from account suffix 727 $domains[''] = ltrim($this->conf['account_suffix'], '@'); 728 729 // find additional domains 730 foreach ($this->conf as $key => $val) { 731 if (is_array($val) && isset($val['account_suffix'])) { 732 $domains[$key] = ltrim($val['account_suffix'], '@'); 733 } 734 } 735 ksort($domains); 736 737 return $domains; 738 } 739 740 /** 741 * Check provided user and userinfo for matching patterns 742 * 743 * The patterns are set up with $this->_constructPattern() 744 * 745 * @author Chris Smith <chris@jalakai.co.uk> 746 * 747 * @param string $user 748 * @param array $info 749 * @return bool 750 */ 751 protected function filter($user, $info) 752 { 753 foreach ($this->pattern as $item => $pattern) { 754 if ($item == 'user') { 755 if (!preg_match($pattern, $user)) return false; 756 } elseif ($item == 'grps') { 757 if (!count(preg_grep($pattern, $info['grps']))) return false; 758 } else { 759 if (!preg_match($pattern, $info[$item])) return false; 760 } 761 } 762 return true; 763 } 764 765 /** 766 * Create a pattern for $this->_filter() 767 * 768 * @author Chris Smith <chris@jalakai.co.uk> 769 * 770 * @param array $filter 771 */ 772 protected function constructPattern($filter) 773 { 774 $this->pattern = array(); 775 foreach ($filter as $item => $pattern) { 776 $this->pattern[$item] = '/'.str_replace('/', '\/', $pattern).'/i'; // allow regex characters 777 } 778 } 779} 780