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<?php
/**
* SQL Password Driver
*
* Driver for passwords stored in SQL database
*
* @version 2.0
* @author Aleksander 'A.L.E.C' Machniak <alec@alec.pl>
*
* Copyright (C) 2005-2013, 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_sql_password
{
function save($curpass, $passwd)
{
$rcmail = rcmail::get_instance();
if (!($sql = $rcmail->config->get('password_query'))) {
$sql = 'SELECT update_passwd(%c, %u)';
}
if ($dsn = $rcmail->config->get('password_db_dsn')) {
$db = rcube_db::factory($dsn, '', false);
$db->set_debug((bool)$rcmail->config->get('sql_debug'));
}
else {
$db = $rcmail->get_dbh();
}
if ($db->is_error()) {
return PASSWORD_ERROR;
}
// crypted password
if (strpos($sql, '%c') !== FALSE) {
$salt = '';
if (!($crypt_hash = $rcmail->config->get('password_crypt_hash'))) {
if (CRYPT_MD5)
$crypt_hash = 'md5';
else if (CRYPT_STD_DES)
$crypt_hash = 'des';
}
switch ($crypt_hash) {
case 'md5':
$len = 8;
$salt_hashindicator = '$1$';
break;
case 'des':
$len = 2;
break;
case 'blowfish':
$cost = (int) $rcmail->config->get('password_blowfish_cost');
$cost = $cost < 4 || $cost > 31 ? 12 : $cost;
$len = 22;
$salt_hashindicator = sprintf('$2a$%02d$', $cost);
break;
case 'sha256':
$len = 16;
$salt_hashindicator = '$5$';
break;
case 'sha512':
$len = 16;
$salt_hashindicator = '$6$';
break;
default:
return PASSWORD_CRYPT_ERROR;
}
//Restrict the character set used as salt (#1488136)
$seedchars = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
for ($i = 0; $i < $len ; $i++) {
$salt .= $seedchars[rand(0, 63)];
}
$sql = str_replace('%c', $db->quote(crypt($passwd, $salt_hashindicator ? $salt_hashindicator .$salt.'$' : $salt)), $sql);
}
// dovecotpw
if (strpos($sql, '%D') !== FALSE) {
if (!($dovecotpw = $rcmail->config->get('password_dovecotpw')))
$dovecotpw = 'dovecotpw';
if (!($method = $rcmail->config->get('password_dovecotpw_method')))
$method = 'CRAM-MD5';
// use common temp dir
$tmp_dir = $rcmail->config->get('temp_dir');
$tmpfile = tempnam($tmp_dir, 'roundcube-');
$pipe = popen("$dovecotpw -s '$method' > '$tmpfile'", "w");
if (!$pipe) {
unlink($tmpfile);
return PASSWORD_CRYPT_ERROR;
}
else {
fwrite($pipe, $passwd . "\n", 1+strlen($passwd)); usleep(1000);
fwrite($pipe, $passwd . "\n", 1+strlen($passwd));
pclose($pipe);
$newpass = trim(file_get_contents($tmpfile), "\n");
if (!preg_match('/^\{' . $method . '\}/', $newpass)) {
return PASSWORD_CRYPT_ERROR;
}
if (!$rcmail->config->get('password_dovecotpw_with_method'))
$newpass = trim(str_replace('{' . $method . '}', '', $newpass));
unlink($tmpfile);
}
$sql = str_replace('%D', $db->quote($newpass), $sql);
}
// hashed passwords
if (preg_match('/%[n|q]/', $sql)) {
if (!extension_loaded('hash')) {
rcube::raise_error(array(
'code' => 600,
'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Password plugin: 'hash' extension not loaded!"
), true, false);
return PASSWORD_ERROR;
}
if (!($hash_algo = strtolower($rcmail->config->get('password_hash_algorithm')))) {
$hash_algo = 'sha1';
}
$hash_passwd = hash($hash_algo, $passwd);
$hash_curpass = hash($hash_algo, $curpass);
if ($rcmail->config->get('password_hash_base64')) {
$hash_passwd = base64_encode(pack('H*', $hash_passwd));
$hash_curpass = base64_encode(pack('H*', $hash_curpass));
}
$sql = str_replace('%n', $db->quote($hash_passwd, 'text'), $sql);
$sql = str_replace('%q', $db->quote($hash_curpass, 'text'), $sql);
}
// Handle clear text passwords securely (#1487034)
$sql_vars = array();
if (preg_match_all('/%[p|o]/', $sql, $m)) {
foreach ($m[0] as $var) {
if ($var == '%p') {
$sql = preg_replace('/%p/', '?', $sql, 1);
$sql_vars[] = (string) $passwd;
}
else { // %o
$sql = preg_replace('/%o/', '?', $sql, 1);
$sql_vars[] = (string) $curpass;
}
}
}
$local_part = $rcmail->user->get_username('local');
$domain_part = $rcmail->user->get_username('domain');
$username = $_SESSION['username'];
$host = $_SESSION['imap_host'];
// convert domains to/from punnycode
if ($rcmail->config->get('password_idn_ascii')) {
$domain_part = rcube_utils::idn_to_ascii($domain_part);
$username = rcube_utils::idn_to_ascii($username);
$host = rcube_utils::idn_to_ascii($host);
}
else {
$domain_part = rcube_utils::idn_to_utf8($domain_part);
$username = rcube_utils::idn_to_utf8($username);
$host = rcube_utils::idn_to_utf8($host);
}
// at least we should always have the local part
$sql = str_replace('%l', $db->quote($local_part, 'text'), $sql);
$sql = str_replace('%d', $db->quote($domain_part, 'text'), $sql);
$sql = str_replace('%u', $db->quote($username, 'text'), $sql);
$sql = str_replace('%h', $db->quote($host, 'text'), $sql);
$res = $db->query($sql, $sql_vars);
if (!$db->is_error()) {
if (strtolower(substr(trim($sql),0,6)) == 'select') {
if ($db->fetch_array($res)) {
return PASSWORD_SUCCESS;
}
}
else {
// This is the good case: 1 row updated
if ($db->affected_rows($res) == 1)
return PASSWORD_SUCCESS;
// @TODO: Some queries don't affect any rows
// Should we assume a success if there was no error?
}
}
return PASSWORD_ERROR;
}
}
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