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<?php
/**
* LDAP Password Driver
*
* Driver for passwords stored in LDAP
* This driver use the PEAR Net_LDAP2 class (https://pear.php.net/package/Net_LDAP2).
*
* @version 2.0
* @author Edouard MOREAU <edouard.moreau@ensma.fr>
*
* method hashPassword based on code from the phpLDAPadmin development team (http://phpldapadmin.sourceforge.net/).
* method randomSalt based on code from the phpLDAPadmin development team (http://phpldapadmin.sourceforge.net/).
*
* Copyright (C) The Roundcube Dev Team
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see https://www.gnu.org/licenses/.
*/
class rcube_ldap_password
{
public function save($curpass, $passwd)
{
$rcmail = rcmail::get_instance();
require_once 'Net/LDAP2.php';
require_once __DIR__ . '/ldap_simple.php';
// Building user DN
if ($userDN = $rcmail->config->get('password_ldap_userDN_mask')) {
$userDN = rcube_ldap_simple_password::substitute_vars($userDN);
}
else {
$userDN = $this->search_userdn($rcmail);
}
if (empty($userDN)) {
return PASSWORD_CONNECT_ERROR;
}
// Connection Method
switch ($rcmail->config->get('password_ldap_method')) {
case 'admin':
$binddn = $rcmail->config->get('password_ldap_adminDN');
$bindpw = $rcmail->config->get('password_ldap_adminPW');
break;
case 'user':
default:
$binddn = $userDN;
$bindpw = $curpass;
break;
}
// Configuration array
$ldapConfig = [
'binddn' => $binddn,
'bindpw' => $bindpw,
'basedn' => $rcmail->config->get('password_ldap_basedn'),
'host' => $rcmail->config->get('password_ldap_host', 'localhost'),
'port' => $rcmail->config->get('password_ldap_port', '389'),
'starttls' => $rcmail->config->get('password_ldap_starttls'),
'version' => $rcmail->config->get('password_ldap_version', '3'),
];
// Connecting using the configuration array
$ldap = Net_LDAP2::connect($ldapConfig);
// Checking for connection error
if (is_a($ldap, 'PEAR_Error')) {
return PASSWORD_CONNECT_ERROR;
}
$force = $rcmail->config->get('password_ldap_force_replace', true);
$pwattr = $rcmail->config->get('password_ldap_pwattr', 'userPassword');
$lchattr = $rcmail->config->get('password_ldap_lchattr');
$smbpwattr = $rcmail->config->get('password_ldap_samba_pwattr');
$smblchattr = $rcmail->config->get('password_ldap_samba_lchattr');
$samba = $rcmail->config->get('password_ldap_samba');
$encodage = $rcmail->config->get('password_ldap_encodage', 'md5-crypt');
// Support multiple userPassword values where desired.
// multiple encodings can be specified separated by '+' (e.g. "cram-md5+ssha")
$encodages = explode('+', $encodage);
$crypted_pass = [];
foreach ($encodages as $enc) {
if ($cpw = password::hash_password($passwd, $enc)) {
$crypted_pass[] = $cpw;
}
}
// Support password_ldap_samba option for backward compat.
if ($samba && !$smbpwattr) {
$smbpwattr = 'sambaNTPassword';
$smblchattr = 'sambaPwdLastSet';
}
// Crypt new password
if (empty($crypted_pass)) {
return PASSWORD_CRYPT_ERROR;
}
// Crypt new samba password
if ($smbpwattr && !($samba_pass = password::hash_password($passwd, 'samba'))) {
return PASSWORD_CRYPT_ERROR;
}
// Writing new crypted password to LDAP
$userEntry = $ldap->getEntry($userDN);
if (Net_LDAP2::isError($userEntry)) {
return PASSWORD_CONNECT_ERROR;
}
if (!$userEntry->replace([$pwattr => $crypted_pass], $force)) {
return PASSWORD_CONNECT_ERROR;
}
// Updating PasswordLastChange Attribute if desired
if ($lchattr) {
$current_day = (int) (time() / 86400);
if (!$userEntry->replace([$lchattr => $current_day], $force)) {
return PASSWORD_CONNECT_ERROR;
}
}
// Update Samba password and last change fields
if ($smbpwattr) {
$userEntry->replace([$smbpwattr => $samba_pass], $force);
}
// Update Samba password last change field
if ($smblchattr) {
$userEntry->replace([$smblchattr => time()], $force);
}
if (Net_LDAP2::isError($userEntry->update())) {
return PASSWORD_CONNECT_ERROR;
}
// All done, no error
return PASSWORD_SUCCESS;
}
/**
* Bind with searchDN and searchPW and search for the user's DN.
* Use search_base and search_filter defined in config file.
* Return the found DN.
*/
function search_userdn($rcmail)
{
$binddn = $rcmail->config->get('password_ldap_searchDN');
$bindpw = $rcmail->config->get('password_ldap_searchPW');
$ldapConfig = [
'basedn' => $rcmail->config->get('password_ldap_basedn'),
'host' => $rcmail->config->get('password_ldap_host', 'localhost'),
'port' => $rcmail->config->get('password_ldap_port', '389'),
'starttls' => $rcmail->config->get('password_ldap_starttls'),
'version' => $rcmail->config->get('password_ldap_version', '3'),
];
// allow anonymous searches
if (!empty($binddn)) {
$ldapConfig['binddn'] = $binddn;
$ldapConfig['bindpw'] = $bindpw;
}
$ldap = Net_LDAP2::connect($ldapConfig);
if (is_a($ldap, 'PEAR_Error')) {
return '';
}
$base = rcube_ldap_simple_password::substitute_vars($rcmail->config->get('password_ldap_search_base'));
$filter = rcube_ldap_simple_password::substitute_vars($rcmail->config->get('password_ldap_search_filter'));
$options = [
'scope' => 'sub',
'attributes' => [],
];
$result = $ldap->search($base, $filter, $options);
if (is_a($result, 'PEAR_Error') || ($result->count() != 1)) {
$ldap->done();
return '';
}
$userDN = $result->current()->dn();
$ldap->done();
return $userDN;
}
}
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