/plugins/password/drivers/ldap.php
PHP | 298 lines | 205 code | 35 blank | 58 comment | 45 complexity | a45aaaa7f525692c95d1733b9902a48b MD5 | raw file
Possible License(s): GPL-3.0, LGPL-2.1
- <?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/).
- *
- */
- 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;
- }
- $crypted_pass = self::hash_password($passwd, $rcmail->config->get('password_ldap_encodage'));
- $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 = $rcmail->config->get('password_ldap_samba');
- // Support password_ldap_samba option for backward compat.
- if ($samba && !$smbpwattr) {
- $smbpwattr = 'sambaNTPassword';
- $smblchattr = 'sambaPwdLastSet';
- }
- // Crypt new password
- if (!$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)
- {
- $ldapConfig = array (
- 'binddn' => $rcmail->config->get('password_ldap_searchDN'),
- 'bindpw' => $rcmail->config->get('password_ldap_searchPW'),
- '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'),
- );
- $ldap = Net_LDAP2::connect($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;
- }
- /* Hardcoded to second blowfish version and set number of rounds */
- $crypted_password = '{CRYPT}' . crypt($password_clear, '$2a$12$' . self::random_salt(13));
- 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('mhash')) {
- $crypted_password = '{SHA}' . base64_encode(mhash(MHASH_SHA1, $password_clear));
- } else {
- /* Your PHP install does not have the mhash() function */
- return false;
- }
- break;
- case 'ssha':
- if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) {
- mt_srand((double) microtime() * 1000000 );
- $salt = mhash_keygen_s2k(MHASH_SHA1, $password_clear, substr(pack('h*', md5(mt_rand())), 0, 8), 4);
- $crypted_password = '{SSHA}' . base64_encode(mhash(MHASH_SHA1, $password_clear . $salt) . $salt);
- } else {
- /* Your PHP install does not have the mhash() function */
- return false;
- }
- break;
- case 'smd5':
- if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) {
- mt_srand((double) microtime() * 1000000 );
- $salt = mhash_keygen_s2k(MHASH_MD5, $password_clear, substr(pack('h*', md5(mt_rand())), 0, 8), 4);
- $crypted_password = '{SMD5}' . base64_encode(mhash(MHASH_MD5, $password_clear . $salt) . $salt);
- } else {
- /* Your PHP install does not have the mhash() function */
- return false;
- }
- 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 '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;
- }
- }