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-rw-r--r--password/drivers/ldap.php384
1 files changed, 384 insertions, 0 deletions
diff --git a/password/drivers/ldap.php b/password/drivers/ldap.php
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+<?php
+
+/**
+ * LDAP Password Driver
+ *
+ * Driver for passwords stored in LDAP
+ * This driver use the PEAR Net_LDAP2 class (http://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) 2005-2014, 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 http://www.gnu.org/licenses/.
+ */
+
+class rcube_ldap_password
+{
+ public function save($curpass, $passwd)
+ {
+ $rcmail = rcmail::get_instance();
+ require_once 'Net/LDAP2.php';
+
+ // Building user DN
+ if ($userDN = $rcmail->config->get('password_ldap_userDN_mask')) {
+ $userDN = self::substitute_vars($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 = array (
+ 'binddn' => $binddn,
+ 'bindpw' => $bindpw,
+ 'basedn' => $rcmail->config->get('password_ldap_basedn'),
+ 'host' => $rcmail->config->get('password_ldap_host'),
+ 'port' => $rcmail->config->get('password_ldap_port'),
+ 'starttls' => $rcmail->config->get('password_ldap_starttls'),
+ 'version' => $rcmail->config->get('password_ldap_version'),
+ );
+
+ // Connecting using the configuration array
+ $ldap = Net_LDAP2::connect($ldapConfig);
+
+ // Checking for connection error
+ if (PEAR::isError($ldap)) {
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ $force = $rcmail->config->get('password_ldap_force_replace');
+ $pwattr = $rcmail->config->get('password_ldap_pwattr');
+ $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');
+
+ // Support multiple userPassword values where desired.
+ // multiple encodings can be specified separated by '+' (e.g. "cram-md5+ssha")
+ $encodages = explode('+', $encodage);
+ $crypted_pass = array();
+
+ foreach ($encodages as $enc) {
+ $cpw = self::hash_password($passwd, $enc);
+ if (!empty($cpw)) {
+ $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 = self::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(array($pwattr => $crypted_pass), $force)) {
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ // Updating PasswordLastChange Attribute if desired
+ if ($lchattr) {
+ $current_day = (int)(time() / 86400);
+ if (!$userEntry->replace(array($lchattr => $current_day), $force)) {
+ return PASSWORD_CONNECT_ERROR;
+ }
+ }
+
+ // Update Samba password and last change fields
+ if ($smbpwattr) {
+ $userEntry->replace(array($smbpwattr => $samba_pass), $force);
+ }
+ // Update Samba password last change field
+ if ($smblchattr) {
+ $userEntry->replace(array($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 = array (
+ 'basedn' => $rcmail->config->get('password_ldap_basedn'),
+ 'host' => $rcmail->config->get('password_ldap_host'),
+ 'port' => $rcmail->config->get('password_ldap_port'),
+ 'starttls' => $rcmail->config->get('password_ldap_starttls'),
+ 'version' => $rcmail->config->get('password_ldap_version'),
+ );
+
+ // allow anonymous searches
+ if (!empty($binddn)) {
+ $ldapConfig['binddn'] = $binddn;
+ $ldapConfig['bindpw'] = $bindpw;
+ }
+
+ $ldap = Net_LDAP2::connect($ldapConfig);
+
+ if (PEAR::isError($ldap)) {
+ return '';
+ }
+
+ $base = self::substitute_vars($rcmail->config->get('password_ldap_search_base'));
+ $filter = self::substitute_vars($rcmail->config->get('password_ldap_search_filter'));
+ $options = array (
+ 'scope' => 'sub',
+ 'attributes' => array(),
+ );
+
+ $result = $ldap->search($base, $filter, $options);
+ $ldap->done();
+ if (PEAR::isError($result) || ($result->count() != 1)) {
+ return '';
+ }
+
+ return $result->current()->dn();
+ }
+
+ /**
+ * Substitute %login, %name, %domain, %dc in $str
+ * See plugin config for details
+ */
+ static function substitute_vars($str)
+ {
+ $str = str_replace('%login', $_SESSION['username'], $str);
+ $str = str_replace('%l', $_SESSION['username'], $str);
+
+ $parts = explode('@', $_SESSION['username']);
+
+ if (count($parts) == 2) {
+ $dc = 'dc='.strtr($parts[1], array('.' => ',dc=')); // hierarchal domain string
+
+ $str = str_replace('%name', $parts[0], $str);
+ $str = str_replace('%n', $parts[0], $str);
+ $str = str_replace('%dc', $dc, $str);
+ $str = str_replace('%domain', $parts[1], $str);
+ $str = str_replace('%d', $parts[1], $str);
+ }
+
+ return $str;
+ }
+
+ /**
+ * Code originaly from the phpLDAPadmin development team
+ * http://phpldapadmin.sourceforge.net/
+ *
+ * Hashes a password and returns the hash based on the specified enc_type
+ */
+ static function hash_password($password_clear, $encodage_type)
+ {
+ $encodage_type = strtolower($encodage_type);
+ switch ($encodage_type) {
+ case 'crypt':
+ $crypted_password = '{CRYPT}' . crypt($password_clear, self::random_salt(2));
+ break;
+
+ case 'ext_des':
+ /* Extended DES crypt. see OpenBSD crypt man page */
+ if (!defined('CRYPT_EXT_DES') || CRYPT_EXT_DES == 0) {
+ /* Your system crypt library does not support extended DES encryption */
+ return false;
+ }
+
+ $crypted_password = '{CRYPT}' . crypt($password_clear, '_' . self::random_salt(8));
+ break;
+
+ case 'md5crypt':
+ if (!defined('CRYPT_MD5') || CRYPT_MD5 == 0) {
+ /* Your system crypt library does not support md5crypt encryption */
+ return false;
+ }
+
+ $crypted_password = '{CRYPT}' . crypt($password_clear, '$1$' . self::random_salt(9));
+ break;
+
+ case 'blowfish':
+ if (!defined('CRYPT_BLOWFISH') || CRYPT_BLOWFISH == 0) {
+ /* Your system crypt library does not support blowfish encryption */
+ return false;
+ }
+
+ $rcmail = rcmail::get_instance();
+ $cost = (int) $rcmail->config->get('password_blowfish_cost');
+ $cost = $cost < 4 || $cost > 31 ? 12 : $cost;
+ $prefix = sprintf('$2a$%02d$', $cost);
+
+ $crypted_password = '{CRYPT}' . crypt($password_clear, $prefix . self::random_salt(22));
+ break;
+
+ case 'md5':
+ $crypted_password = '{MD5}' . base64_encode(pack('H*', md5($password_clear)));
+ break;
+
+ case 'sha':
+ if (function_exists('sha1')) {
+ /* Use PHP 4.3.0+ sha1 function, if it is available */
+ $crypted_password = '{SHA}' . base64_encode(pack('H*', sha1($password_clear)));
+ }
+ else if (function_exists('hash')) {
+ $crypted_password = '{SHA}' . base64_encode(hash('sha1', $password_clear, true));
+ }
+ else if (function_exists('mhash')) {
+ $crypted_password = '{SHA}' . base64_encode(mhash(MHASH_SHA1, $password_clear));
+ }
+ else {
+ /* Your PHP install does not have the mhash()/hash() nor sha1() function */
+ return false;
+ }
+ break;
+
+ case 'ssha':
+ mt_srand((double) microtime() * 1000000);
+ $salt = substr(pack('h*', md5(mt_rand())), 0, 8);
+
+ if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) {
+ $salt = mhash_keygen_s2k(MHASH_SHA1, $password_clear, $salt, 4);
+ $password = mhash(MHASH_SHA1, $password_clear . $salt);
+ }
+ else if (function_exists('sha1')) {
+ $salt = substr(pack("H*", sha1($salt . $password_clear)), 0, 4);
+ $password = sha1($password_clear . $salt, true);
+ }
+ else if (function_exists('hash')) {
+ $salt = substr(pack("H*", hash('sha1', $salt . $password_clear)), 0, 4);
+ $password = hash('sha1', $password_clear . $salt, true);
+ }
+
+ if ($password) {
+ $crypted_password = '{SSHA}' . base64_encode($password . $salt);
+ }
+ else {
+ /* Your PHP install does not have the mhash()/hash() nor sha1() function */
+ return false;
+ }
+ break;
+
+
+ case 'smd5':
+ mt_srand((double) microtime() * 1000000);
+ $salt = substr(pack('h*', md5(mt_rand())), 0, 8);
+
+ if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) {
+ $salt = mhash_keygen_s2k(MHASH_MD5, $password_clear, $salt, 4);
+ $password = mhash(MHASH_MD5, $password_clear . $salt);
+ }
+ else if (function_exists('hash')) {
+ $salt = substr(pack("H*", hash('md5', $salt . $password_clear)), 0, 4);
+ $password = hash('md5', $password_clear . $salt, true);
+ }
+ else {
+ $salt = substr(pack("H*", md5($salt . $password_clear)), 0, 4);
+ $password = md5($password_clear . $salt, true);
+ }
+
+ $crypted_password = '{SMD5}' . base64_encode($password . $salt);
+ break;
+
+ case 'samba':
+ if (function_exists('hash')) {
+ $crypted_password = hash('md4', rcube_charset::convert($password_clear, RCUBE_CHARSET, 'UTF-16LE'));
+ $crypted_password = strtoupper($crypted_password);
+ }
+ else {
+ /* Your PHP install does not have the hash() function */
+ return false;
+ }
+ break;
+
+ case 'ad':
+ $crypted_password = rcube_charset::convert('"' . $password_clear . '"', RCUBE_CHARSET, 'UTF-16LE');
+ break;
+
+ case 'cram-md5':
+ require_once __DIR__ . '/../helpers/dovecot_hmacmd5.php';
+ return dovecot_hmacmd5($password_clear);
+ break;
+
+ case 'clear':
+ default:
+ $crypted_password = $password_clear;
+ }
+
+ return $crypted_password;
+ }
+
+ /**
+ * Code originaly from the phpLDAPadmin development team
+ * http://phpldapadmin.sourceforge.net/
+ *
+ * Used to generate a random salt for crypt-style passwords
+ */
+ static function random_salt($length)
+ {
+ $possible = '0123456789' . 'abcdefghijklmnopqrstuvwxyz' . 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' . './';
+ $str = '';
+ // mt_srand((double)microtime() * 1000000);
+
+ while (strlen($str) < $length) {
+ $str .= substr($possible, (rand() % strlen($possible)), 1);
+ }
+
+ return $str;
+ }
+}