* * 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 (is_a($ldap, 'PEAR_Error')) { 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 (is_a($ldap, 'PEAR_Error')) { 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); $ldap->done(); if (is_a($result, 'PEAR_Error') || ($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; } }