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<?php
/**
* Simple LDAP Password Driver
*
* Driver for passwords stored in LDAP
* This driver is based on Edouard's LDAP Password Driver, but does not
* require PEAR's Net_LDAP2 to be installed
*
* @version 2.0
* @author Wout Decre <wout@canodus.be>
*/
class rcube_ldap_simple_password
{
private $debug = false;
function save($curpass, $passwd)
{
$rcmail = rcmail::get_instance();
$this->debug = $rcmail->config->get('ldap_debug');
$ldap_host = $rcmail->config->get('password_ldap_host');
$ldap_port = $rcmail->config->get('password_ldap_port');
$this->_debug("C: Connect to $ldap_host:$ldap_port");
// Connect
if (!$ds = ldap_connect($ldap_host, $ldap_port)) {
$this->_debug("S: NOT OK");
rcube::raise_error(array(
'code' => 100, 'type' => 'ldap',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Could not connect to LDAP server"
),
true);
return PASSWORD_CONNECT_ERROR;
}
$this->_debug("S: OK");
// Set protocol version
ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, $rcmail->config->get('password_ldap_version'));
// Start TLS
if ($rcmail->config->get('password_ldap_starttls')) {
if (!ldap_start_tls($ds)) {
ldap_unbind($ds);
return PASSWORD_CONNECT_ERROR;
}
}
// include 'ldap' driver, we share some static methods with it
require_once INSTALL_PATH . 'plugins/password/drivers/ldap.php';
// other plugins might want to modify user DN
$plugin = $rcmail->plugins->exec_hook('password_ldap_bind', array(
'user_dn' => '', 'conn' => $ds));
// Build user DN
if (!empty($plugin['user_dn'])) {
$user_dn = $plugin['user_dn'];
}
else if ($user_dn = $rcmail->config->get('password_ldap_userDN_mask')) {
$user_dn = rcube_ldap_password::substitute_vars($user_dn);
}
else {
$user_dn = $this->search_userdn($rcmail, $ds);
}
if (empty($user_dn)) {
ldap_unbind($ds);
return PASSWORD_CONNECT_ERROR;
}
// Connection method
switch ($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 = $user_dn;
$bindpw = $curpass;
break;
}
$lchattr = $rcmail->config->get('password_ldap_lchattr');
$pwattr = $rcmail->config->get('password_ldap_pwattr');
$smbpwattr = $rcmail->config->get('password_ldap_samba_pwattr');
$smblchattr = $rcmail->config->get('password_ldap_samba_lchattr');
$samba = $rcmail->config->get('password_ldap_samba');
$pass_mode = $rcmail->config->get('password_ldap_encodage');
$crypted_pass = rcube_ldap_password::hash_password($passwd, $pass_mode);
// Support password_ldap_samba option for backward compat.
if ($samba && !$smbpwattr) {
$smbpwattr = 'sambaNTPassword';
$smblchattr = 'sambaPwdLastSet';
}
// Crypt new password
if (!$crypted_pass) {
return PASSWORD_CRYPT_ERROR;
}
// Crypt new Samba password
if ($smbpwattr && !($samba_pass = rcube_ldap_password::hash_password($passwd, 'samba'))) {
return PASSWORD_CRYPT_ERROR;
}
$this->_debug("C: Bind $binddn [pass: $bindpw]");
// Bind
if (!ldap_bind($ds, $binddn, $bindpw)) {
$this->_debug("S: ".ldap_error($ds));
ldap_unbind($ds);
return PASSWORD_CONNECT_ERROR;
}
$this->_debug("S: OK");
$entry[$pwattr] = $crypted_pass;
// Update PasswordLastChange Attribute if desired
if ($lchattr) {
$entry[$lchattr] = (int)(time() / 86400);
}
// Update Samba password
if ($smbpwattr) {
$entry[$smbpwattr] = $samba_pass;
}
// Update Samba password last change
if ($smblchattr) {
$entry[$smblchattr] = time();
}
$this->_debug("C: Modify $user_dn: " . print_r($entry, true));
if (!ldap_modify($ds, $user_dn, $entry)) {
$this->_debug("S: ".ldap_error($ds));
ldap_unbind($ds);
return PASSWORD_CONNECT_ERROR;
}
$this->_debug("S: OK");
// All done, no error
ldap_unbind($ds);
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, $ds)
{
$search_user = $rcmail->config->get('password_ldap_searchDN');
$search_pass = $rcmail->config->get('password_ldap_searchPW');
if (empty($search_user)) {
return null;
}
$this->_debug("C: Bind $search_user [pass: $search_pass]");
// Bind
if (!ldap_bind($ds, $search_user, $search_pass)) {
$this->_debug("S: ".ldap_error($ds));
return false;
}
$this->_debug("S: OK");
$search_base = $rcmail->config->get('password_ldap_search_base');
$search_filter = $rcmail->config->get('password_ldap_search_filter');
$search_base = rcube_ldap_password::substitute_vars($search_base);
$search_filter = rcube_ldap_password::substitute_vars($search_filter);
$this->_debug("C: Search $search_base for $search_filter");
// Search for the DN
if (!$sr = ldap_search($ds, $search_base, $search_filter)) {
$this->_debug("S: ".ldap_error($ds));
return false;
}
$found = ldap_count_entries($ds, $sr);
$this->_debug("S: OK [found $found records]");
// If no or more entries were found, return false
if ($found != 1) {
return false;
}
return ldap_get_dn($ds, ldap_first_entry($ds, $sr));
}
/**
* Prints debug info to the log
*/
private function _debug($str)
{
if ($this->debug) {
rcube::write_log('ldap', $str);
}
}
}
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