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<?php
require_once dirname(__FILE__) . '/spamd.php';
/**
* Sam storage implementation for LDAP backend.
* Requires SpamAssassin patch found at:
* http://bugzilla.spamassassin.org/show_bug.cgi?id=2205
*
* Required parameters:<pre>
* 'ldapserver' The hostname of the ldap server.
* 'basedn' The password associated with 'username'.
* 'attribute' The database type (ie. 'pgsql', 'mysql', etc.).
* 'uid' The communication protocol ('tcp', 'unix', etc.).</pre>
*
* $Horde: sam/lib/Driver/spamd_ldap.php,v 1.14 2006/01/01 21:11:50 jan Exp $
*
* Copyright 2003-2006 Chris Bowlby <excalibur@hub.org>
* Copyright 2003-2006 Max Kalika <max@horde.org>
* Copyright 2003-2006 Neil Sequeira <neil@ncsconsulting.com>
* Copyright 2004-2006 Jan Schneider <jan@horde.org>
*
* See the enclosed file COPYING for license information (GPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/gpl.html.
*
* @author Chris Bowlby <excalibur@hub.org>
* @author Max Kalika <max@horde.org>
* @author Neil Sequeira <neil@ncsconsulting.com>
* @author Jan Schneider <jan@horde.org>
* @since SAM 0.1
* @package Sam
*/
class SAM_Driver_spamd_ldap extends SAM_Driver {
/**
* Handle for the current LDAP connection.
*
* @var resource
*/
var $_linkid;
/**
* Boolean indicating whether or not we're connected to the LDAP server.
*
* @var boolean
*/
var $_connected = false;
/**
* Constructs a new LDAP storage object.
*
* @param string $user The user who owns these SPAM options.
* @param array $params A hash containing connection parameters.
*/
function SAM_Driver_spamd_ldap($user, $params = array())
{
$this->_user = $user;
$this->_params = $params;
}
/**
* Retrieve an option set from the storage backend.
*
* @access private
*/
function retrieve()
{
/* Make sure we have a valid database connection. */
$this->_connect();
/* Set default values. */
$this->_setDefaults();
$eres = false;
$user = $this->_user;
$attrib = strtolower($this->_params['attribute']);
$filter = sprintf('(%s=%s)', $this->_params['uid'], $user);
$res = ldap_search($this->_linkid, $this->_params['basedn'],
$filter, array($attrib));
if ($res) {
$eres = ldap_get_entries($this->_linkid, $res);
}
if ($eres && isset($eres[0][$attrib])) {
for ($i = 0; $i < $eres[0][$attrib]['count']; $i++) {
list($a, $v) = explode(' ', $eres[0][$attrib][$i]);
$ra = $this->_mapOptionToAttribute($a);
if (is_numeric($v)) {
if (strstr($v, '.')) {
$newoptions[$ra][] = (float) $v;
} else {
$newoptions[$ra][] = (int) $v;
}
} else {
$newoptions[$ra][] = $v;
}
}
/* go through new options and pull single values
* out of their arrays */
foreach ($newoptions as $k => $v) {
if (count($v) > 1) {
$this->_options[$k] = $v;
} else {
$this->_options[$k] = $v[0];
}
}
}
}
/**
* Set default values.
*
* @access private
*/
function _setDefaults()
{
$this->_options = array_merge($this->_options, $this->_params['defaults']);
}
/**
* Store an option set in the storage backend.
*
* @access private
*
* @return boolean True on success or false on failure.
*/
function store()
{
/* Make sure we have a valid database connection. */
if (!$this->_connect()) {
return false;
}
$user = $this->_user;
$attrib = $this->_params['attribute'];
$userdn = sprintf('%s=%s,%s', $this->_params['uid'], $user,$this->_params['basedn']);
$store = $this->_options;
foreach ($store as $a => $v) {
$sa = $this->_mapAttributeToOption($a);
if (is_array($v)) {
foreach ($v as $av) {
$entry[$attrib][] = $sa . ' ' . $av;
}
} else {
$entry[$attrib][] = $sa . ' ' . $v;
}
}
return ldap_modify($this->_linkid, $userdn, $entry);
}
/**
* Attempts to open a connection to the LDAP server.
*
* @access private
*
* @return boolean True on success or false on failure.
*/
function _connect()
{
if ($this->_connected) {
return true;
}
$bindpass = Auth::getCredential('password');
$user = $this->_user;
$binddn = sprintf('%s=%s,%s', $this->_params['uid'], $user, $this->_params['basedn']);
Horde::assertDriverConfig($this->_params, 'spamd_ldap',
array('ldapserver', 'basedn', 'attribute', 'uid'),
'SAM backend', 'backends.php', '$backends');
/* try three times */
for ($tries = 3; $tries > 0; $tries--) {
$lc = ldap_connect($this->_params['ldapserver']);
if ($lc) {
$lb = ldap_bind($lc, $binddn, $bindpass);
if ($lb) {
$this->_linkid = $lc;
$this->connected = true;
return true;
} else {
ldap_unbind($lc);
}
}
}
return false;
}
/**
* Disconnect from the LDAP server and clean up the connection.
*
* @return boolean True on success, false on failure.
*/
function _disconnect()
{
if ($this->_connected) {
$this->_connected = false;
return ldap_unbind($this->_linkid);
}
return true;
}
}
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