1311 lines
37 KiB
PHP
1311 lines
37 KiB
PHP
<?php
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/**
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* ownCloud – LDAP Wizard
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*
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* @author Arthur Schiwon
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* @copyright 2013 Arthur Schiwon blizzz@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\user_ldap\lib;
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class Wizard extends LDAPUtility {
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static protected $l;
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protected $access;
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protected $cr;
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protected $configuration;
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protected $result;
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protected $resultCache = array();
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const LRESULT_PROCESSED_OK = 2;
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const LRESULT_PROCESSED_INVALID = 3;
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const LRESULT_PROCESSED_SKIP = 4;
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const LFILTER_LOGIN = 2;
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const LFILTER_USER_LIST = 3;
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const LFILTER_GROUP_LIST = 4;
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const LFILTER_MODE_ASSISTED = 2;
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const LFILTER_MODE_RAW = 1;
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const LDAP_NW_TIMEOUT = 4;
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/**
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* Constructor
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* @param Configuration $configuration an instance of Configuration
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* @param ILDAPWrapper $ldap an instance of ILDAPWrapper
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*/
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public function __construct(Configuration $configuration, ILDAPWrapper $ldap, Access $access) {
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parent::__construct($ldap);
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$this->configuration = $configuration;
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if(is_null(Wizard::$l)) {
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Wizard::$l = \OC::$server->getL10N('user_ldap');
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}
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$this->access = $access;
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$this->result = new WizardResult();
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}
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public function __destruct() {
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if($this->result->hasChanges()) {
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$this->configuration->saveConfiguration();
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}
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}
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/**
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* counts entries in the LDAP directory
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* @param string $filter the LDAP search filter
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* @param string $type a string being either 'users' or 'groups';
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* @return int|bool
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*/
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public function countEntries($filter, $type) {
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$reqs = array('ldapHost', 'ldapPort', 'ldapBase');
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if($type === 'users') {
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$reqs[] = 'ldapUserFilter';
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}
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if(!$this->checkRequirements($reqs)) {
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throw new \Exception('Requirements not met', 400);
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}
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if($type === 'groups') {
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$result = $this->access->countGroups($filter);
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} else if($type === 'users') {
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$result = $this->access->countUsers($filter);
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} else {
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throw new \Exception('internal error: invald object type', 500);
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}
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return $result;
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}
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public function countGroups() {
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$filter = $this->configuration->ldapGroupFilter;
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if(empty($filter)) {
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$output = self::$l->n('%s group found', '%s groups found', 0, array(0));
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$this->result->addChange('ldap_group_count', $output);
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return $this->result;
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}
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try {
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$groupsTotal = $this->countEntries($filter, 'groups');
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} catch (\Exception $e) {
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//400 can be ignored, 500 is forwarded
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if($e->getCode() === 500) {
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throw $e;
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}
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return false;
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}
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$groupsTotal = ($groupsTotal !== false) ? $groupsTotal : 0;
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$output = self::$l->n('%s group found', '%s groups found', $groupsTotal, array($groupsTotal));
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$this->result->addChange('ldap_group_count', $output);
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return $this->result;
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}
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/**
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* @return WizardResult
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* @throws \Exception
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*/
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public function countUsers() {
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$filter = $this->access->getFilterForUserCount();
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$usersTotal = $this->countEntries($filter, 'users');
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$usersTotal = ($usersTotal !== false) ? $usersTotal : 0;
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$output = self::$l->n('%s user found', '%s users found', $usersTotal, array($usersTotal));
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$this->result->addChange('ldap_user_count', $output);
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return $this->result;
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}
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/**
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* counts users with a specified attribute
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* @param string $attr
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* @param bool $existsCheck
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* @return int|bool
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*/
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public function countUsersWithAttribute($attr, $existsCheck = false) {
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if(!$this->checkRequirements(array('ldapHost',
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'ldapPort',
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'ldapBase',
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'ldapUserFilter',
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))) {
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return false;
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}
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$filter = $this->access->combineFilterWithAnd(array(
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$this->configuration->ldapUserFilter,
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$attr . '=*'
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));
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$limit = ($existsCheck === false) ? null : 1;
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return $this->access->countUsers($filter, array('dn'), $limit);
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}
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/**
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* detects the display name attribute. If a setting is already present that
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* returns at least one hit, the detection will be canceled.
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* @return WizardResult|bool
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* @throws \Exception
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*/
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public function detectUserDisplayNameAttribute() {
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if(!$this->checkRequirements(array('ldapHost',
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'ldapPort',
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'ldapBase',
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'ldapUserFilter',
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))) {
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return false;
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}
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$attr = $this->configuration->ldapUserDisplayName;
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if($attr !== 'displayName' && !empty($attr)) {
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// most likely not the default value with upper case N,
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// verify it still produces a result
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$count = intval($this->countUsersWithAttribute($attr, true));
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if($count > 0) {
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//no change, but we sent it back to make sure the user interface
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//is still correct, even if the ajax call was cancelled inbetween
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$this->result->addChange('ldap_display_name', $attr);
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return $this->result;
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}
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}
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// first attribute that has at least one result wins
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$displayNameAttrs = array('displayname', 'cn');
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foreach ($displayNameAttrs as $attr) {
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$count = intval($this->countUsersWithAttribute($attr, true));
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if($count > 0) {
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$this->applyFind('ldap_display_name', $attr);
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return $this->result;
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}
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};
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throw new \Exception(self::$l->t('Could not detect user display name attribute. Please specify it yourself in advanced ldap settings.'));
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}
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/**
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* detects the most often used email attribute for users applying to the
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* user list filter. If a setting is already present that returns at least
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* one hit, the detection will be canceled.
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* @return WizardResult|bool
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*/
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public function detectEmailAttribute() {
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if(!$this->checkRequirements(array('ldapHost',
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'ldapPort',
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'ldapBase',
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'ldapUserFilter',
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))) {
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return false;
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}
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$attr = $this->configuration->ldapEmailAttribute;
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if(!empty($attr)) {
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$count = intval($this->countUsersWithAttribute($attr, true));
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if($count > 0) {
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return false;
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}
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$writeLog = true;
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} else {
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$writeLog = false;
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}
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$emailAttributes = array('mail', 'mailPrimaryAddress');
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$winner = '';
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$maxUsers = 0;
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foreach($emailAttributes as $attr) {
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$count = $this->countUsersWithAttribute($attr);
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if($count > $maxUsers) {
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$maxUsers = $count;
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$winner = $attr;
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}
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}
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if($winner !== '') {
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$this->applyFind('ldap_email_attr', $winner);
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if($writeLog) {
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\OCP\Util::writeLog('user_ldap', 'The mail attribute has ' .
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'automatically been reset, because the original value ' .
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'did not return any results.', \OCP\Util::INFO);
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}
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}
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return $this->result;
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}
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/**
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* @return WizardResult
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* @throws \Exception
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*/
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public function determineAttributes() {
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if(!$this->checkRequirements(array('ldapHost',
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'ldapPort',
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'ldapBase',
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'ldapUserFilter',
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))) {
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return false;
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}
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$attributes = $this->getUserAttributes();
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natcasesort($attributes);
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$attributes = array_values($attributes);
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$this->result->addOptions('ldap_loginfilter_attributes', $attributes);
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$selected = $this->configuration->ldapLoginFilterAttributes;
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if(is_array($selected) && !empty($selected)) {
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$this->result->addChange('ldap_loginfilter_attributes', $selected);
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}
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return $this->result;
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}
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/**
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* return the state of the Group Filter Mode
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* @return WizardResult
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*/
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public function getGroupFilterMode() {
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$this->getFilterMode('ldapGroupFilterMode');
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return $this->result;
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}
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/**
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* return the state of the Login Filter Mode
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* @return WizardResult
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*/
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public function getLoginFilterMode() {
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$this->getFilterMode('ldapLoginFilterMode');
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return $this->result;
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}
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/**
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* return the state of the User Filter Mode
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* @return WizardResult
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*/
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public function getUserFilterMode() {
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$this->getFilterMode('ldapUserFilterMode');
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return $this->result;
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}
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/**
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* return the state of the mode of the specified filter
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* @param string $confKey contains the access key of the Configuration
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*/
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private function getFilterMode($confKey) {
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$mode = $this->configuration->$confKey;
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if(is_null($mode)) {
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$mode = $this->LFILTER_MODE_ASSISTED;
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}
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$this->result->addChange($confKey, $mode);
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}
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/**
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* detects the available LDAP attributes
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* @return array|false The instance's WizardResult instance
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* @throws \Exception
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*/
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private function getUserAttributes() {
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if(!$this->checkRequirements(array('ldapHost',
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'ldapPort',
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'ldapBase',
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'ldapUserFilter',
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))) {
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return false;
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}
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$cr = $this->getConnection();
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if(!$cr) {
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throw new \Exception('Could not connect to LDAP');
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}
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$base = $this->configuration->ldapBase[0];
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$filter = $this->configuration->ldapUserFilter;
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$rr = $this->ldap->search($cr, $base, $filter, array(), 1, 1);
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if(!$this->ldap->isResource($rr)) {
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return false;
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}
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$er = $this->ldap->firstEntry($cr, $rr);
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$attributes = $this->ldap->getAttributes($cr, $er);
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$pureAttributes = array();
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for($i = 0; $i < $attributes['count']; $i++) {
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$pureAttributes[] = $attributes[$i];
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}
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return $pureAttributes;
|
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}
|
||
|
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/**
|
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* detects the available LDAP groups
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* @return WizardResult|false the instance's WizardResult instance
|
||
*/
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public function determineGroupsForGroups() {
|
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return $this->determineGroups('ldap_groupfilter_groups',
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'ldapGroupFilterGroups',
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false);
|
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}
|
||
|
||
/**
|
||
* detects the available LDAP groups
|
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* @return WizardResult|false the instance's WizardResult instance
|
||
*/
|
||
public function determineGroupsForUsers() {
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return $this->determineGroups('ldap_userfilter_groups',
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'ldapUserFilterGroups');
|
||
}
|
||
|
||
/**
|
||
* detects the available LDAP groups
|
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* @param string $dbKey
|
||
* @param string $confKey
|
||
* @param bool $testMemberOf
|
||
* @return WizardResult|false the instance's WizardResult instance
|
||
* @throws \Exception
|
||
*/
|
||
private function determineGroups($dbKey, $confKey, $testMemberOf = true) {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapBase',
|
||
))) {
|
||
return false;
|
||
}
|
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$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
|
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$groups = $this->fetchGroups($dbKey, $confKey);
|
||
|
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if($testMemberOf) {
|
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$this->configuration->hasMemberOfFilterSupport = $this->testMemberOf($groups);
|
||
$this->result->markChange();
|
||
if(!$this->configuration->hasMemberOfFilterSupport) {
|
||
throw new \Exception('memberOf is not supported by the server');
|
||
}
|
||
}
|
||
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* fetches all groups from LDAP
|
||
* @param string $dbKey
|
||
* @param string $confKey
|
||
* @return array $groupEntries
|
||
*/
|
||
public function fetchGroups($dbKey, $confKey) {
|
||
$obclasses = array('posixGroup', 'group', 'zimbraDistributionList', 'groupOfNames');
|
||
|
||
$filterParts = array();
|
||
foreach($obclasses as $obclass) {
|
||
$filterParts[] = 'objectclass='.$obclass;
|
||
}
|
||
//we filter for everything
|
||
//- that looks like a group and
|
||
//- has the group display name set
|
||
$filter = $this->access->combineFilterWithOr($filterParts);
|
||
$filter = $this->access->combineFilterWithAnd(array($filter, 'cn=*'));
|
||
|
||
$groupNames = array();
|
||
$groupEntries = array();
|
||
$limit = 400;
|
||
$offset = 0;
|
||
do {
|
||
// we need to request dn additionally here, otherwise memberOf
|
||
// detection will fail later
|
||
$result = $this->access->searchGroups($filter, array('cn', 'dn'), $limit, $offset);
|
||
foreach($result as $item) {
|
||
$groupNames[] = $item['cn'];
|
||
$groupEntries[] = $item;
|
||
}
|
||
$offset += $limit;
|
||
} while (count($groupNames) > 0 && count($groupNames) % $limit === 0);
|
||
|
||
if(count($groupNames) > 0) {
|
||
natsort($groupNames);
|
||
$this->result->addOptions($dbKey, array_values($groupNames));
|
||
} else {
|
||
throw new \Exception(self::$l->t('Could not find the desired feature'));
|
||
}
|
||
|
||
$setFeatures = $this->configuration->$confKey;
|
||
if(is_array($setFeatures) && !empty($setFeatures)) {
|
||
//something is already configured? pre-select it.
|
||
$this->result->addChange($dbKey, $setFeatures);
|
||
}
|
||
return $groupEntries;
|
||
}
|
||
|
||
public function determineGroupMemberAssoc() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapGroupFilter',
|
||
))) {
|
||
return false;
|
||
}
|
||
$attribute = $this->detectGroupMemberAssoc();
|
||
if($attribute === false) {
|
||
return false;
|
||
}
|
||
$this->configuration->setConfiguration(array('ldapGroupMemberAssocAttr' => $attribute));
|
||
//so it will be saved on destruct
|
||
$this->result->markChange();
|
||
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* Detects the available object classes
|
||
* @return WizardResult|false the instance's WizardResult instance
|
||
* @throws \Exception
|
||
*/
|
||
public function determineGroupObjectClasses() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapBase',
|
||
))) {
|
||
return false;
|
||
}
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
|
||
$obclasses = array('group', 'posixGroup', '*');
|
||
$this->determineFeature($obclasses,
|
||
'objectclass',
|
||
'ldap_groupfilter_objectclass',
|
||
'ldapGroupFilterObjectclass',
|
||
false);
|
||
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* detects the available object classes
|
||
* @return WizardResult
|
||
* @throws \Exception
|
||
*/
|
||
public function determineUserObjectClasses() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapBase',
|
||
))) {
|
||
return false;
|
||
}
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
|
||
$obclasses = array('inetOrgPerson', 'person', 'organizationalPerson',
|
||
'user', 'posixAccount', '*');
|
||
$filter = $this->configuration->ldapUserFilter;
|
||
//if filter is empty, it is probably the first time the wizard is called
|
||
//then, apply suggestions.
|
||
$this->determineFeature($obclasses,
|
||
'objectclass',
|
||
'ldap_userfilter_objectclass',
|
||
'ldapUserFilterObjectclass',
|
||
empty($filter));
|
||
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* @return WizardResult|false
|
||
* @throws \Exception
|
||
*/
|
||
public function getGroupFilter() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapBase',
|
||
))) {
|
||
return false;
|
||
}
|
||
//make sure the use display name is set
|
||
$displayName = $this->configuration->ldapGroupDisplayName;
|
||
if(empty($displayName)) {
|
||
$d = $this->configuration->getDefaults();
|
||
$this->applyFind('ldap_group_display_name',
|
||
$d['ldap_group_display_name']);
|
||
}
|
||
$filter = $this->composeLdapFilter(self::LFILTER_GROUP_LIST);
|
||
|
||
$this->applyFind('ldap_group_filter', $filter);
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* @return WizardResult|false
|
||
* @throws \Exception
|
||
*/
|
||
public function getUserListFilter() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapBase',
|
||
))) {
|
||
return false;
|
||
}
|
||
//make sure the use display name is set
|
||
$displayName = $this->configuration->ldapUserDisplayName;
|
||
if(empty($displayName)) {
|
||
$d = $this->configuration->getDefaults();
|
||
$this->applyFind('ldap_display_name', $d['ldap_display_name']);
|
||
}
|
||
$filter = $this->composeLdapFilter(self::LFILTER_USER_LIST);
|
||
if(!$filter) {
|
||
throw new \Exception('Cannot create filter');
|
||
}
|
||
|
||
$this->applyFind('ldap_userlist_filter', $filter);
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* @return bool|WizardResult
|
||
* @throws \Exception
|
||
*/
|
||
public function getUserLoginFilter() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
'ldapBase',
|
||
'ldapUserFilter',
|
||
))) {
|
||
return false;
|
||
}
|
||
|
||
$filter = $this->composeLdapFilter(self::LFILTER_LOGIN);
|
||
if(!$filter) {
|
||
throw new \Exception('Cannot create filter');
|
||
}
|
||
|
||
$this->applyFind('ldap_login_filter', $filter);
|
||
return $this->result;
|
||
}
|
||
|
||
/**
|
||
* Tries to determine the port, requires given Host, User DN and Password
|
||
* @return WizardResult|false WizardResult on success, false otherwise
|
||
* @throws \Exception
|
||
*/
|
||
public function guessPortAndTLS() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
))) {
|
||
return false;
|
||
}
|
||
$this->checkHost();
|
||
$portSettings = $this->getPortSettingsToTry();
|
||
|
||
if(!is_array($portSettings)) {
|
||
throw new \Exception(print_r($portSettings, true));
|
||
}
|
||
|
||
//proceed from the best configuration and return on first success
|
||
foreach($portSettings as $setting) {
|
||
$p = $setting['port'];
|
||
$t = $setting['tls'];
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: trying port '. $p . ', TLS '. $t, \OCP\Util::DEBUG);
|
||
//connectAndBind may throw Exception, it needs to be catched by the
|
||
//callee of this method
|
||
if($this->connectAndBind($p, $t) === true) {
|
||
$config = array('ldapPort' => $p,
|
||
'ldapTLS' => intval($t)
|
||
);
|
||
$this->configuration->setConfiguration($config);
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: detected Port '. $p, \OCP\Util::DEBUG);
|
||
$this->result->addChange('ldap_port', $p);
|
||
return $this->result;
|
||
}
|
||
}
|
||
|
||
//custom port, undetected (we do not brute force)
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* tries to determine a base dn from User DN or LDAP Host
|
||
* @return WizardResult|false WizardResult on success, false otherwise
|
||
*/
|
||
public function guessBaseDN() {
|
||
if(!$this->checkRequirements(array('ldapHost',
|
||
'ldapPort',
|
||
))) {
|
||
return false;
|
||
}
|
||
|
||
//check whether a DN is given in the agent name (99.9% of all cases)
|
||
$base = null;
|
||
$i = stripos($this->configuration->ldapAgentName, 'dc=');
|
||
if($i !== false) {
|
||
$base = substr($this->configuration->ldapAgentName, $i);
|
||
if($this->testBaseDN($base)) {
|
||
$this->applyFind('ldap_base', $base);
|
||
return $this->result;
|
||
}
|
||
}
|
||
|
||
//this did not help :(
|
||
//Let's see whether we can parse the Host URL and convert the domain to
|
||
//a base DN
|
||
$helper = new Helper();
|
||
$domain = $helper->getDomainFromURL($this->configuration->ldapHost);
|
||
if(!$domain) {
|
||
return false;
|
||
}
|
||
|
||
$dparts = explode('.', $domain);
|
||
$base2 = implode('dc=', $dparts);
|
||
if($base !== $base2 && $this->testBaseDN($base2)) {
|
||
$this->applyFind('ldap_base', $base2);
|
||
return $this->result;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* sets the found value for the configuration key in the WizardResult
|
||
* as well as in the Configuration instance
|
||
* @param string $key the configuration key
|
||
* @param string $value the (detected) value
|
||
*
|
||
*/
|
||
private function applyFind($key, $value) {
|
||
$this->result->addChange($key, $value);
|
||
$this->configuration->setConfiguration(array($key => $value));
|
||
}
|
||
|
||
/**
|
||
* Checks, whether a port was entered in the Host configuration
|
||
* field. In this case the port will be stripped off, but also stored as
|
||
* setting.
|
||
*/
|
||
private function checkHost() {
|
||
$host = $this->configuration->ldapHost;
|
||
$hostInfo = parse_url($host);
|
||
|
||
//removes Port from Host
|
||
if(is_array($hostInfo) && isset($hostInfo['port'])) {
|
||
$port = $hostInfo['port'];
|
||
$host = str_replace(':'.$port, '', $host);
|
||
$this->applyFind('ldap_host', $host);
|
||
$this->applyFind('ldap_port', $port);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* tries to detect the group member association attribute which is
|
||
* one of 'uniqueMember', 'memberUid', 'member'
|
||
* @return string|false, string with the attribute name, false on error
|
||
* @throws \Exception
|
||
*/
|
||
private function detectGroupMemberAssoc() {
|
||
$possibleAttrs = array('uniqueMember', 'memberUid', 'member', 'unfugasdfasdfdfa');
|
||
$filter = $this->configuration->ldapGroupFilter;
|
||
if(empty($filter)) {
|
||
return false;
|
||
}
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
$base = $this->configuration->ldapBase[0];
|
||
$rr = $this->ldap->search($cr, $base, $filter, $possibleAttrs);
|
||
if(!$this->ldap->isResource($rr)) {
|
||
return false;
|
||
}
|
||
$er = $this->ldap->firstEntry($cr, $rr);
|
||
while(is_resource($er)) {
|
||
$this->ldap->getDN($cr, $er);
|
||
$attrs = $this->ldap->getAttributes($cr, $er);
|
||
$result = array();
|
||
$possibleAttrsCount = count($possibleAttrs);
|
||
for($i = 0; $i < $possibleAttrsCount; $i++) {
|
||
if(isset($attrs[$possibleAttrs[$i]])) {
|
||
$result[$possibleAttrs[$i]] = $attrs[$possibleAttrs[$i]]['count'];
|
||
}
|
||
}
|
||
if(!empty($result)) {
|
||
natsort($result);
|
||
return key($result);
|
||
}
|
||
|
||
$er = $this->ldap->nextEntry($cr, $er);
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Checks whether for a given BaseDN results will be returned
|
||
* @param string $base the BaseDN to test
|
||
* @return bool true on success, false otherwise
|
||
* @throws \Exception
|
||
*/
|
||
private function testBaseDN($base) {
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
|
||
//base is there, let's validate it. If we search for anything, we should
|
||
//get a result set > 0 on a proper base
|
||
$rr = $this->ldap->search($cr, $base, 'objectClass=*', array('dn'), 0, 1);
|
||
if(!$this->ldap->isResource($rr)) {
|
||
$errorNo = $this->ldap->errno($cr);
|
||
$errorMsg = $this->ldap->error($cr);
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Could not search base '.$base.
|
||
' Error '.$errorNo.': '.$errorMsg, \OCP\Util::INFO);
|
||
return false;
|
||
}
|
||
$entries = $this->ldap->countEntries($cr, $rr);
|
||
return ($entries !== false) && ($entries > 0);
|
||
}
|
||
|
||
/**
|
||
* Checks whether the server supports memberOf in LDAP Filter.
|
||
* Requires that groups are determined, thus internally called from within
|
||
* determineGroups()
|
||
* @param array $groups
|
||
* @return bool true if it does, false otherwise
|
||
* @throws \Exception
|
||
*/
|
||
private function testMemberOf($groups) {
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
if(!is_array($this->configuration->ldapBase)
|
||
|| !isset($this->configuration->ldapBase[0])) {
|
||
return false;
|
||
}
|
||
$base = $this->configuration->ldapBase[0];
|
||
$filterPrefix = '(&(objectclass=*)(memberOf=';
|
||
$filterSuffix = '))';
|
||
|
||
foreach($groups as $groupProperties) {
|
||
if(!isset($groupProperties['cn'])) {
|
||
//assuming only groups have their cn cached :)
|
||
continue;
|
||
}
|
||
$filter = strtolower($filterPrefix . $groupProperties['dn'] . $filterSuffix);
|
||
$rr = $this->ldap->search($cr, $base, $filter, array('dn'));
|
||
if(!$this->ldap->isResource($rr)) {
|
||
continue;
|
||
}
|
||
$entries = $this->ldap->countEntries($cr, $rr);
|
||
//we do not know which groups are empty, so test any and return
|
||
//success on the first match that returns at least one user
|
||
if(($entries !== false) && ($entries > 0)) {
|
||
return true;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* creates an LDAP Filter from given configuration
|
||
* @param integer $filterType int, for which use case the filter shall be created
|
||
* can be any of self::LFILTER_USER_LIST, self::LFILTER_LOGIN or
|
||
* self::LFILTER_GROUP_LIST
|
||
* @return string|false string with the filter on success, false otherwise
|
||
* @throws \Exception
|
||
*/
|
||
private function composeLdapFilter($filterType) {
|
||
$filter = '';
|
||
$parts = 0;
|
||
switch ($filterType) {
|
||
case self::LFILTER_USER_LIST:
|
||
$objcs = $this->configuration->ldapUserFilterObjectclass;
|
||
//glue objectclasses
|
||
if(is_array($objcs) && count($objcs) > 0) {
|
||
$filter .= '(|';
|
||
foreach($objcs as $objc) {
|
||
$filter .= '(objectclass=' . $objc . ')';
|
||
}
|
||
$filter .= ')';
|
||
$parts++;
|
||
}
|
||
//glue group memberships
|
||
if($this->configuration->hasMemberOfFilterSupport) {
|
||
$cns = $this->configuration->ldapUserFilterGroups;
|
||
if(is_array($cns) && count($cns) > 0) {
|
||
$filter .= '(|';
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
$base = $this->configuration->ldapBase[0];
|
||
foreach($cns as $cn) {
|
||
$rr = $this->ldap->search($cr, $base, 'cn=' . $cn, array('dn', 'primaryGroupToken'));
|
||
if(!$this->ldap->isResource($rr)) {
|
||
continue;
|
||
}
|
||
$er = $this->ldap->firstEntry($cr, $rr);
|
||
$attrs = $this->ldap->getAttributes($cr, $er);
|
||
$dn = $this->ldap->getDN($cr, $er);
|
||
if(empty($dn)) {
|
||
continue;
|
||
}
|
||
$filterPart = '(memberof=' . $dn . ')';
|
||
if(isset($attrs['primaryGroupToken'])) {
|
||
$pgt = $attrs['primaryGroupToken'][0];
|
||
$primaryFilterPart = '(primaryGroupID=' . $pgt .')';
|
||
$filterPart = '(|' . $filterPart . $primaryFilterPart . ')';
|
||
}
|
||
$filter .= $filterPart;
|
||
}
|
||
$filter .= ')';
|
||
}
|
||
$parts++;
|
||
}
|
||
//wrap parts in AND condition
|
||
if($parts > 1) {
|
||
$filter = '(&' . $filter . ')';
|
||
}
|
||
if(empty($filter)) {
|
||
$filter = '(objectclass=*)';
|
||
}
|
||
break;
|
||
|
||
case self::LFILTER_GROUP_LIST:
|
||
$objcs = $this->configuration->ldapGroupFilterObjectclass;
|
||
//glue objectclasses
|
||
if(is_array($objcs) && count($objcs) > 0) {
|
||
$filter .= '(|';
|
||
foreach($objcs as $objc) {
|
||
$filter .= '(objectclass=' . $objc . ')';
|
||
}
|
||
$filter .= ')';
|
||
$parts++;
|
||
}
|
||
//glue group memberships
|
||
$cns = $this->configuration->ldapGroupFilterGroups;
|
||
if(is_array($cns) && count($cns) > 0) {
|
||
$filter .= '(|';
|
||
$base = $this->configuration->ldapBase[0];
|
||
foreach($cns as $cn) {
|
||
$filter .= '(cn=' . $cn . ')';
|
||
}
|
||
$filter .= ')';
|
||
}
|
||
$parts++;
|
||
//wrap parts in AND condition
|
||
if($parts > 1) {
|
||
$filter = '(&' . $filter . ')';
|
||
}
|
||
break;
|
||
|
||
case self::LFILTER_LOGIN:
|
||
$ulf = $this->configuration->ldapUserFilter;
|
||
$loginpart = '=%uid';
|
||
$filterUsername = '';
|
||
$userAttributes = $this->getUserAttributes();
|
||
$userAttributes = array_change_key_case(array_flip($userAttributes));
|
||
$parts = 0;
|
||
|
||
$x = $this->configuration->ldapLoginFilterUsername;
|
||
if($this->configuration->ldapLoginFilterUsername === '1') {
|
||
$attr = '';
|
||
if(isset($userAttributes['uid'])) {
|
||
$attr = 'uid';
|
||
} else if(isset($userAttributes['samaccountname'])) {
|
||
$attr = 'samaccountname';
|
||
} else if(isset($userAttributes['cn'])) {
|
||
//fallback
|
||
$attr = 'cn';
|
||
}
|
||
if(!empty($attr)) {
|
||
$filterUsername = '(' . $attr . $loginpart . ')';
|
||
$parts++;
|
||
}
|
||
}
|
||
|
||
$filterEmail = '';
|
||
if($this->configuration->ldapLoginFilterEmail === '1') {
|
||
$filterEmail = '(|(mailPrimaryAddress=%uid)(mail=%uid))';
|
||
$parts++;
|
||
}
|
||
|
||
$filterAttributes = '';
|
||
$attrsToFilter = $this->configuration->ldapLoginFilterAttributes;
|
||
if(is_array($attrsToFilter) && count($attrsToFilter) > 0) {
|
||
$filterAttributes = '(|';
|
||
foreach($attrsToFilter as $attribute) {
|
||
$filterAttributes .= '(' . $attribute . $loginpart . ')';
|
||
}
|
||
$filterAttributes .= ')';
|
||
$parts++;
|
||
}
|
||
|
||
$filterLogin = '';
|
||
if($parts > 1) {
|
||
$filterLogin = '(|';
|
||
}
|
||
$filterLogin .= $filterUsername;
|
||
$filterLogin .= $filterEmail;
|
||
$filterLogin .= $filterAttributes;
|
||
if($parts > 1) {
|
||
$filterLogin .= ')';
|
||
}
|
||
|
||
$filter = '(&'.$ulf.$filterLogin.')';
|
||
break;
|
||
}
|
||
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Final filter '.$filter, \OCP\Util::DEBUG);
|
||
|
||
return $filter;
|
||
}
|
||
|
||
/**
|
||
* Connects and Binds to an LDAP Server
|
||
* @param int $port the port to connect with
|
||
* @param bool $tls whether startTLS is to be used
|
||
* @param bool $ncc
|
||
* @return bool
|
||
* @throws \Exception
|
||
*/
|
||
private function connectAndBind($port = 389, $tls = false, $ncc = false) {
|
||
if($ncc) {
|
||
//No certificate check
|
||
//FIXME: undo afterwards
|
||
putenv('LDAPTLS_REQCERT=never');
|
||
}
|
||
|
||
//connect, does not really trigger any server communication
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Checking Host Info ', \OCP\Util::DEBUG);
|
||
$host = $this->configuration->ldapHost;
|
||
$hostInfo = parse_url($host);
|
||
if(!$hostInfo) {
|
||
throw new \Exception($this->l->t('Invalid Host'));
|
||
}
|
||
if(isset($hostInfo['scheme'])) {
|
||
if(isset($hostInfo['port'])) {
|
||
//problem
|
||
} else {
|
||
$host .= ':' . $port;
|
||
}
|
||
}
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Attempting to connect ', \OCP\Util::DEBUG);
|
||
$cr = $this->ldap->connect($host, $port);
|
||
if(!is_resource($cr)) {
|
||
throw new \Exception($this->l->t('Invalid Host'));
|
||
}
|
||
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Setting LDAP Options ', \OCP\Util::DEBUG);
|
||
//set LDAP options
|
||
$this->ldap->setOption($cr, LDAP_OPT_PROTOCOL_VERSION, 3);
|
||
$this->ldap->setOption($cr, LDAP_OPT_REFERRALS, 0);
|
||
$this->ldap->setOption($cr, LDAP_OPT_NETWORK_TIMEOUT, self::LDAP_NW_TIMEOUT);
|
||
if($tls) {
|
||
$isTlsWorking = @$this->ldap->startTls($cr);
|
||
if(!$isTlsWorking) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Attemping to Bind ', \OCP\Util::DEBUG);
|
||
//interesting part: do the bind!
|
||
$login = $this->ldap->bind($cr,
|
||
$this->configuration->ldapAgentName,
|
||
$this->configuration->ldapAgentPassword);
|
||
|
||
if($login === true) {
|
||
$this->ldap->unbind($cr);
|
||
if($ncc) {
|
||
throw new \Exception('Certificate cannot be validated.');
|
||
}
|
||
\OCP\Util::writeLog('user_ldap', 'Wiz: Bind successful to Port '. $port . ' TLS ' . intval($tls), \OCP\Util::DEBUG);
|
||
return true;
|
||
}
|
||
|
||
$errNo = $this->ldap->errno($cr);
|
||
$error = ldap_error($cr);
|
||
$this->ldap->unbind($cr);
|
||
if($errNo === -1 || ($errNo === 2 && $ncc)) {
|
||
//host, port or TLS wrong
|
||
return false;
|
||
} else if ($errNo === 2) {
|
||
return $this->connectAndBind($port, $tls, true);
|
||
}
|
||
throw new \Exception($error);
|
||
}
|
||
|
||
/**
|
||
* checks whether a valid combination of agent and password has been
|
||
* provided (either two values or nothing for anonymous connect)
|
||
* @return bool, true if everything is fine, false otherwise
|
||
*/
|
||
private function checkAgentRequirements() {
|
||
$agent = $this->configuration->ldapAgentName;
|
||
$pwd = $this->configuration->ldapAgentPassword;
|
||
|
||
return ( (!empty($agent) && !empty($pwd))
|
||
|| (empty($agent) && empty($pwd)));
|
||
}
|
||
|
||
/**
|
||
* @param array $reqs
|
||
* @return bool
|
||
*/
|
||
private function checkRequirements($reqs) {
|
||
$this->checkAgentRequirements();
|
||
foreach($reqs as $option) {
|
||
$value = $this->configuration->$option;
|
||
if(empty($value)) {
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* does a cumulativeSearch on LDAP to get different values of a
|
||
* specified attribute
|
||
* @param string[] $filters array, the filters that shall be used in the search
|
||
* @param string $attr the attribute of which a list of values shall be returned
|
||
* @param int $dnReadLimit the amount of how many DNs should be analyzed.
|
||
* The lower, the faster
|
||
* @param string $maxF string. if not null, this variable will have the filter that
|
||
* yields most result entries
|
||
* @return array|false an array with the values on success, false otherwise
|
||
*/
|
||
public function cumulativeSearchOnAttribute($filters, $attr, $dnReadLimit = 3, &$maxF = null) {
|
||
$dnRead = array();
|
||
$foundItems = array();
|
||
$maxEntries = 0;
|
||
if(!is_array($this->configuration->ldapBase)
|
||
|| !isset($this->configuration->ldapBase[0])) {
|
||
return false;
|
||
}
|
||
$base = $this->configuration->ldapBase[0];
|
||
$cr = $this->getConnection();
|
||
if(!$this->ldap->isResource($cr)) {
|
||
return false;
|
||
}
|
||
$lastFilter = null;
|
||
if(isset($filters[count($filters)-1])) {
|
||
$lastFilter = $filters[count($filters)-1];
|
||
}
|
||
foreach($filters as $filter) {
|
||
if($lastFilter === $filter && count($foundItems) > 0) {
|
||
//skip when the filter is a wildcard and results were found
|
||
continue;
|
||
}
|
||
$rr = $this->ldap->search($cr, $base, $filter, array($attr));
|
||
if(!$this->ldap->isResource($rr)) {
|
||
continue;
|
||
}
|
||
$entries = $this->ldap->countEntries($cr, $rr);
|
||
$getEntryFunc = 'firstEntry';
|
||
if(($entries !== false) && ($entries > 0)) {
|
||
if(!is_null($maxF) && $entries > $maxEntries) {
|
||
$maxEntries = $entries;
|
||
$maxF = $filter;
|
||
}
|
||
$dnReadCount = 0;
|
||
do {
|
||
$entry = $this->ldap->$getEntryFunc($cr, $rr);
|
||
$getEntryFunc = 'nextEntry';
|
||
if(!$this->ldap->isResource($entry)) {
|
||
continue 2;
|
||
}
|
||
$rr = $entry; //will be expected by nextEntry next round
|
||
$attributes = $this->ldap->getAttributes($cr, $entry);
|
||
$dn = $this->ldap->getDN($cr, $entry);
|
||
if($dn === false || in_array($dn, $dnRead)) {
|
||
continue;
|
||
}
|
||
$newItems = array();
|
||
$state = $this->getAttributeValuesFromEntry($attributes,
|
||
$attr,
|
||
$newItems);
|
||
$dnReadCount++;
|
||
$foundItems = array_merge($foundItems, $newItems);
|
||
$this->resultCache[$dn][$attr] = $newItems;
|
||
$dnRead[] = $dn;
|
||
} while(($state === self::LRESULT_PROCESSED_SKIP
|
||
|| $this->ldap->isResource($entry))
|
||
&& ($dnReadLimit === 0 || $dnReadCount < $dnReadLimit));
|
||
}
|
||
}
|
||
|
||
return array_unique($foundItems);
|
||
}
|
||
|
||
/**
|
||
* determines if and which $attr are available on the LDAP server
|
||
* @param string[] $objectclasses the objectclasses to use as search filter
|
||
* @param string $attr the attribute to look for
|
||
* @param string $dbkey the dbkey of the setting the feature is connected to
|
||
* @param string $confkey the confkey counterpart for the $dbkey as used in the
|
||
* Configuration class
|
||
* @param bool $po whether the objectClass with most result entries
|
||
* shall be pre-selected via the result
|
||
* @return array|false list of found items.
|
||
* @throws \Exception
|
||
*/
|
||
private function determineFeature($objectclasses, $attr, $dbkey, $confkey, $po = false) {
|
||
$cr = $this->getConnection();
|
||
if(!$cr) {
|
||
throw new \Exception('Could not connect to LDAP');
|
||
}
|
||
$p = 'objectclass=';
|
||
foreach($objectclasses as $key => $value) {
|
||
$objectclasses[$key] = $p.$value;
|
||
}
|
||
$maxEntryObjC = '';
|
||
|
||
//how deep to dig?
|
||
//When looking for objectclasses, testing few entries is sufficient,
|
||
$dig = 3;
|
||
|
||
$availableFeatures =
|
||
$this->cumulativeSearchOnAttribute($objectclasses, $attr,
|
||
$dig, $maxEntryObjC);
|
||
if(is_array($availableFeatures)
|
||
&& count($availableFeatures) > 0) {
|
||
natcasesort($availableFeatures);
|
||
//natcasesort keeps indices, but we must get rid of them for proper
|
||
//sorting in the web UI. Therefore: array_values
|
||
$this->result->addOptions($dbkey, array_values($availableFeatures));
|
||
} else {
|
||
throw new \Exception(self::$l->t('Could not find the desired feature'));
|
||
}
|
||
|
||
$setFeatures = $this->configuration->$confkey;
|
||
if(is_array($setFeatures) && !empty($setFeatures)) {
|
||
//something is already configured? pre-select it.
|
||
$this->result->addChange($dbkey, $setFeatures);
|
||
} else if($po && !empty($maxEntryObjC)) {
|
||
//pre-select objectclass with most result entries
|
||
$maxEntryObjC = str_replace($p, '', $maxEntryObjC);
|
||
$this->applyFind($dbkey, $maxEntryObjC);
|
||
$this->result->addChange($dbkey, $maxEntryObjC);
|
||
}
|
||
|
||
return $availableFeatures;
|
||
}
|
||
|
||
/**
|
||
* appends a list of values fr
|
||
* @param resource $result the return value from ldap_get_attributes
|
||
* @param string $attribute the attribute values to look for
|
||
* @param array &$known new values will be appended here
|
||
* @return int, state on of the class constants LRESULT_PROCESSED_OK,
|
||
* LRESULT_PROCESSED_INVALID or LRESULT_PROCESSED_SKIP
|
||
*/
|
||
private function getAttributeValuesFromEntry($result, $attribute, &$known) {
|
||
if(!is_array($result)
|
||
|| !isset($result['count'])
|
||
|| !$result['count'] > 0) {
|
||
return self::LRESULT_PROCESSED_INVALID;
|
||
}
|
||
|
||
// strtolower on all keys for proper comparison
|
||
$result = \OCP\Util::mb_array_change_key_case($result);
|
||
$attribute = strtolower($attribute);
|
||
if(isset($result[$attribute])) {
|
||
foreach($result[$attribute] as $key => $val) {
|
||
if($key === 'count') {
|
||
continue;
|
||
}
|
||
if(!in_array($val, $known)) {
|
||
$known[] = $val;
|
||
}
|
||
}
|
||
return self::LRESULT_PROCESSED_OK;
|
||
} else {
|
||
return self::LRESULT_PROCESSED_SKIP;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @return bool|mixed
|
||
*/
|
||
private function getConnection() {
|
||
if(!is_null($this->cr)) {
|
||
return $this->cr;
|
||
}
|
||
$cr = $this->ldap->connect(
|
||
$this->configuration->ldapHost.':'.$this->configuration->ldapPort,
|
||
$this->configuration->ldapPort);
|
||
|
||
$this->ldap->setOption($cr, LDAP_OPT_PROTOCOL_VERSION, 3);
|
||
$this->ldap->setOption($cr, LDAP_OPT_REFERRALS, 0);
|
||
$this->ldap->setOption($cr, LDAP_OPT_NETWORK_TIMEOUT, self::LDAP_NW_TIMEOUT);
|
||
if($this->configuration->ldapTLS === 1) {
|
||
$this->ldap->startTls($cr);
|
||
}
|
||
|
||
$lo = @$this->ldap->bind($cr,
|
||
$this->configuration->ldapAgentName,
|
||
$this->configuration->ldapAgentPassword);
|
||
if($lo === true) {
|
||
$this->$cr = $cr;
|
||
return $cr;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* @return array
|
||
*/
|
||
private function getDefaultLdapPortSettings() {
|
||
static $settings = array(
|
||
array('port' => 7636, 'tls' => false),
|
||
array('port' => 636, 'tls' => false),
|
||
array('port' => 7389, 'tls' => true),
|
||
array('port' => 389, 'tls' => true),
|
||
array('port' => 7389, 'tls' => false),
|
||
array('port' => 389, 'tls' => false),
|
||
);
|
||
return $settings;
|
||
}
|
||
|
||
/**
|
||
* @return array
|
||
*/
|
||
private function getPortSettingsToTry() {
|
||
//389 ← LDAP / Unencrypted or StartTLS
|
||
//636 ← LDAPS / SSL
|
||
//7xxx ← UCS. need to be checked first, because both ports may be open
|
||
$host = $this->configuration->ldapHost;
|
||
$port = intval($this->configuration->ldapPort);
|
||
$portSettings = array();
|
||
|
||
//In case the port is already provided, we will check this first
|
||
if($port > 0) {
|
||
$hostInfo = parse_url($host);
|
||
if(!(is_array($hostInfo)
|
||
&& isset($hostInfo['scheme'])
|
||
&& stripos($hostInfo['scheme'], 'ldaps') !== false)) {
|
||
$portSettings[] = array('port' => $port, 'tls' => true);
|
||
}
|
||
$portSettings[] =array('port' => $port, 'tls' => false);
|
||
}
|
||
|
||
//default ports
|
||
$portSettings = array_merge($portSettings,
|
||
$this->getDefaultLdapPortSettings());
|
||
|
||
return $portSettings;
|
||
}
|
||
|
||
|
||
}
|