<?php
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/**
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* LDAP Password Driver
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*
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* Driver for passwords stored in LDAP
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* This driver use the PEAR Net_LDAP2 class (http://pear.php.net/package/Net_LDAP2).
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*
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* @version 2.0
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* @author Edouard MOREAU <edouard.moreau@ensma.fr>
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*
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* method hashPassword based on code from the phpLDAPadmin development team (http://phpldapadmin.sourceforge.net/).
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* method randomSalt based on code from the phpLDAPadmin development team (http://phpldapadmin.sourceforge.net/).
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*
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* Copyright (C) 2005-2014, The Roundcube Dev Team
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/.
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*/
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class rcube_ldap_password
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{
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public function save($curpass, $passwd)
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{
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$rcmail = rcmail::get_instance();
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require_once 'Net/LDAP2.php';
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// Building user DN
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if ($userDN = $rcmail->config->get('password_ldap_userDN_mask')) {
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$userDN = self::substitute_vars($userDN);
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}
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else {
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$userDN = $this->search_userdn($rcmail);
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}
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if (empty($userDN)) {
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return PASSWORD_CONNECT_ERROR;
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}
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// Connection Method
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switch($rcmail->config->get('password_ldap_method')) {
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case 'admin':
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$binddn = $rcmail->config->get('password_ldap_adminDN');
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$bindpw = $rcmail->config->get('password_ldap_adminPW');
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break;
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case 'user':
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default:
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$binddn = $userDN;
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$bindpw = $curpass;
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break;
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}
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// Configuration array
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$ldapConfig = array (
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'binddn' => $binddn,
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'bindpw' => $bindpw,
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'basedn' => $rcmail->config->get('password_ldap_basedn'),
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'host' => $rcmail->config->get('password_ldap_host'),
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'port' => $rcmail->config->get('password_ldap_port'),
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'starttls' => $rcmail->config->get('password_ldap_starttls'),
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'version' => $rcmail->config->get('password_ldap_version'),
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);
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// Connecting using the configuration array
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$ldap = Net_LDAP2::connect($ldapConfig);
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// Checking for connection error
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if (is_a($ldap, 'PEAR_Error')) {
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return PASSWORD_CONNECT_ERROR;
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}
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$force = $rcmail->config->get('password_ldap_force_replace');
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$pwattr = $rcmail->config->get('password_ldap_pwattr');
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$lchattr = $rcmail->config->get('password_ldap_lchattr');
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$smbpwattr = $rcmail->config->get('password_ldap_samba_pwattr');
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$smblchattr = $rcmail->config->get('password_ldap_samba_lchattr');
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$samba = $rcmail->config->get('password_ldap_samba');
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$encodage = $rcmail->config->get('password_ldap_encodage');
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// Support multiple userPassword values where desired.
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// multiple encodings can be specified separated by '+' (e.g. "cram-md5+ssha")
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$encodages = explode('+', $encodage);
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$crypted_pass = array();
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foreach ($encodages as $enc) {
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if ($cpw = password::hash_password($passwd, $enc)) {
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$crypted_pass[] = $cpw;
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}
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}
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// Support password_ldap_samba option for backward compat.
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if ($samba && !$smbpwattr) {
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$smbpwattr = 'sambaNTPassword';
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$smblchattr = 'sambaPwdLastSet';
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}
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// Crypt new password
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if (empty($crypted_pass)) {
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return PASSWORD_CRYPT_ERROR;
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}
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// Crypt new samba password
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if ($smbpwattr && !($samba_pass = password::hash_password($passwd, 'samba'))) {
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return PASSWORD_CRYPT_ERROR;
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}
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// Writing new crypted password to LDAP
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$userEntry = $ldap->getEntry($userDN);
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if (Net_LDAP2::isError($userEntry)) {
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return PASSWORD_CONNECT_ERROR;
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}
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if (!$userEntry->replace(array($pwattr => $crypted_pass), $force)) {
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return PASSWORD_CONNECT_ERROR;
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}
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// Updating PasswordLastChange Attribute if desired
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if ($lchattr) {
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$current_day = (int)(time() / 86400);
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if (!$userEntry->replace(array($lchattr => $current_day), $force)) {
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return PASSWORD_CONNECT_ERROR;
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}
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}
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// Update Samba password and last change fields
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if ($smbpwattr) {
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$userEntry->replace(array($smbpwattr => $samba_pass), $force);
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}
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// Update Samba password last change field
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if ($smblchattr) {
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$userEntry->replace(array($smblchattr => time()), $force);
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}
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if (Net_LDAP2::isError($userEntry->update())) {
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return PASSWORD_CONNECT_ERROR;
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}
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// All done, no error
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return PASSWORD_SUCCESS;
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}
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/**
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* Bind with searchDN and searchPW and search for the user's DN.
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* Use search_base and search_filter defined in config file.
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* Return the found DN.
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*/
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function search_userdn($rcmail)
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{
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$binddn = $rcmail->config->get('password_ldap_searchDN');
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$bindpw = $rcmail->config->get('password_ldap_searchPW');
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$ldapConfig = array (
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'basedn' => $rcmail->config->get('password_ldap_basedn'),
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'host' => $rcmail->config->get('password_ldap_host'),
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'port' => $rcmail->config->get('password_ldap_port'),
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'starttls' => $rcmail->config->get('password_ldap_starttls'),
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'version' => $rcmail->config->get('password_ldap_version'),
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);
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// allow anonymous searches
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if (!empty($binddn)) {
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$ldapConfig['binddn'] = $binddn;
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$ldapConfig['bindpw'] = $bindpw;
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}
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$ldap = Net_LDAP2::connect($ldapConfig);
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if (is_a($ldap, 'PEAR_Error')) {
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return '';
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}
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$base = self::substitute_vars($rcmail->config->get('password_ldap_search_base'));
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$filter = self::substitute_vars($rcmail->config->get('password_ldap_search_filter'));
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$options = array (
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'scope' => 'sub',
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'attributes' => array(),
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);
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$result = $ldap->search($base, $filter, $options);
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if (is_a($result, 'PEAR_Error') || ($result->count() != 1)) {
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$ldap->done();
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return '';
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}
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$userDN = $result->current()->dn();
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$ldap->done();
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return $userDN;
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}
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/**
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* Substitute %login, %name, %domain, %dc in $str
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* See plugin config for details
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*/
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static function substitute_vars($str)
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{
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$str = str_replace('%login', $_SESSION['username'], $str);
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$str = str_replace('%l', $_SESSION['username'], $str);
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$parts = explode('@', $_SESSION['username']);
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if (count($parts) == 2) {
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$dc = 'dc='.strtr($parts[1], array('.' => ',dc=')); // hierarchal domain string
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$str = str_replace('%name', $parts[0], $str);
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$str = str_replace('%n', $parts[0], $str);
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$str = str_replace('%dc', $dc, $str);
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$str = str_replace('%domain', $parts[1], $str);
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$str = str_replace('%d', $parts[1], $str);
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}
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return $str;
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}
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}
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