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