500 lines
17 KiB
PHP
500 lines
17 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Kolab Authentication (based on ldap_authentication plugin)
|
|
*
|
|
* Authenticates on LDAP server, finds canonized authentication ID for IMAP
|
|
* and for new users creates identity based on LDAP information.
|
|
*
|
|
* Supports impersonate feature (login as another user). To use this feature
|
|
* imap_auth_type/smtp_auth_type must be set to DIGEST-MD5 or PLAIN.
|
|
*
|
|
* @version @package_version@
|
|
* @author Aleksander Machniak <machniak@kolabsys.com>
|
|
*
|
|
* Copyright (C) 2011, Kolab Systems AG <contact@kolabsys.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
class kolab_auth extends rcube_plugin
|
|
{
|
|
private $ldap;
|
|
private $data = array();
|
|
|
|
public function init()
|
|
{
|
|
$rcmail = rcmail::get_instance();
|
|
|
|
$this->add_hook('authenticate', array($this, 'authenticate'));
|
|
$this->add_hook('startup', array($this, 'startup'));
|
|
$this->add_hook('user_create', array($this, 'user_create'));
|
|
|
|
// Hooks related to "Login As" feature
|
|
$this->add_hook('template_object_loginform', array($this, 'login_form'));
|
|
$this->add_hook('storage_connect', array($this, 'imap_connect'));
|
|
$this->add_hook('managesieve_connect', array($this, 'imap_connect'));
|
|
$this->add_hook('smtp_connect', array($this, 'smtp_connect'));
|
|
|
|
$this->add_hook('write_log', array($this, 'write_log'));
|
|
|
|
// TODO: This section does not actually seem to work
|
|
if ($rcmail->config->get('kolab_auth_auditlog', false)) {
|
|
$rcmail->config->set('debug_level', 1);
|
|
$rcmail->config->set('devel_mode', true);
|
|
$rcmail->config->set('smtp_log', true);
|
|
$rcmail->config->set('log_logins', true);
|
|
$rcmail->config->set('log_session', true);
|
|
$rcmail->config->set('sql_debug', true);
|
|
$rcmail->config->set('memcache_debug', true);
|
|
$rcmail->config->set('imap_debug', true);
|
|
$rcmail->config->set('ldap_debug', true);
|
|
$rcmail->config->set('smtp_debug', true);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
public function startup($args) {
|
|
// Arguments are task / action, not interested
|
|
if (!empty($_SESSION['user_roledns'])) {
|
|
$this->load_user_role_plugins_and_settings($_SESSION['user_roledns']);
|
|
}
|
|
|
|
return $args;
|
|
}
|
|
|
|
public function load_user_role_plugins_and_settings($role_dns) {
|
|
$rcmail = rcmail::get_instance();
|
|
$this->load_config();
|
|
|
|
// Check role dependent plugins to enable and settings to modify
|
|
|
|
// Example 'kolab_auth_role_plugins' =
|
|
//
|
|
// Array(
|
|
// '<role_dn>' => Array('plugin1', 'plugin2'),
|
|
// );
|
|
|
|
$role_plugins = $rcmail->config->get('kolab_auth_role_plugins');
|
|
|
|
// Example $rcmail_config['kolab_auth_role_settings'] =
|
|
//
|
|
// Array(
|
|
// '<role_dn>' => Array(
|
|
// '$setting' => Array(
|
|
// 'mode' => '(override|merge)', (default: override)
|
|
// 'value' => <>,
|
|
// 'allow_override' => (true|false) (default: false)
|
|
// ),
|
|
// ),
|
|
// );
|
|
|
|
$role_settings = $rcmail->config->get('kolab_auth_role_settings');
|
|
|
|
foreach ($role_dns as $role_dn) {
|
|
if (isset($role_plugins[$role_dn]) && is_array($role_plugins[$role_dn])) {
|
|
foreach ($role_plugins[$role_dn] as $plugin) {
|
|
$this->require_plugin($plugin);
|
|
}
|
|
}
|
|
|
|
if (isset($role_settings[$role_dn]) && is_array($role_settings[$role_dn])) {
|
|
foreach ($role_settings[$role_dn] as $setting_name => $setting) {
|
|
if (!isset($setting['mode'])) {
|
|
$setting['mode'] = 'override';
|
|
}
|
|
|
|
if ($setting['mode'] == "override") {
|
|
$rcmail->config->set($setting_name, $setting['value']);
|
|
} elseif ($setting['mode'] == "merge") {
|
|
$orig_setting = $rcmail->config->get($setting_name);
|
|
|
|
if (!empty($orig_setting)) {
|
|
if (is_array($orig_setting)) {
|
|
$rcmail->config->set($setting_name, array_merge($orig_setting, $setting['value']));
|
|
}
|
|
} else {
|
|
$rcmail->config->set($setting_name, $setting['value']);
|
|
}
|
|
}
|
|
|
|
if (!isset($setting['allow_override']) || !$setting['allow_override']) {
|
|
$rcmail->config->set('dont_override', array_merge($rcmail->config->get('dont_override', Array()), Array($setting_name)));
|
|
} else {
|
|
$dont_override = $rcmail->config->get('dont_override');
|
|
if (in_array($setting_name, $dont_override)) {
|
|
$_dont_override = array();
|
|
foreach ($dont_override as $_setting) {
|
|
if ($_setting != $setting_name) {
|
|
$_dont_override[] = $_setting;
|
|
}
|
|
}
|
|
$rcmail->config->set('dont_override', $_dont_override);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function write_log($args) {
|
|
$rcmail = rcmail::get_instance();
|
|
|
|
if (!$rcmail->config->get('kolab_auth_auditlog', false)) {
|
|
return $args;
|
|
}
|
|
|
|
$args['abort'] = true;
|
|
|
|
if ($rcmail->config->get('log_driver') == 'syslog') {
|
|
$prio = $args['name'] == 'errors' ? LOG_ERR : LOG_INFO;
|
|
syslog($prio, $args['line']);
|
|
return $args;
|
|
} else {
|
|
$line = sprintf("[%s]: %s\n", $args['date'], $args['line']);
|
|
|
|
// log_driver == 'file' is assumed here
|
|
$log_dir = $rcmail->config->get('log_dir', INSTALL_PATH . 'logs');
|
|
|
|
// Append original username + target username
|
|
if (!is_dir($log_dir.'/'.strtolower($_SESSION['kolab_auth_admin']).'/'.strtolower($_SESSION['username']))) {
|
|
// Attempt to create the directory
|
|
if (@mkdir($log_dir.'/'.strtolower($_SESSION['kolab_auth_admin']).'/'.strtolower($_SESSION['username']), 0750, true)) {
|
|
$log_dir = $log_dir.'/'.strtolower($_SESSION['kolab_auth_admin']).'/'.strtolower($_SESSION['username']);
|
|
}
|
|
} else {
|
|
$log_dir = $log_dir.'/'.strtolower($_SESSION['kolab_auth_admin']).'/'.strtolower($_SESSION['username']);
|
|
}
|
|
|
|
// try to open specific log file for writing
|
|
$logfile = $log_dir.'/'.$args['name'];
|
|
|
|
if ($fp = fopen($logfile, 'a')) {
|
|
fwrite($fp, $line);
|
|
fflush($fp);
|
|
fclose($fp);
|
|
return $args;
|
|
}
|
|
else
|
|
trigger_error("Error writing to log file $logfile; Please check permissions", E_USER_WARNING);
|
|
}
|
|
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Sets defaults for new user.
|
|
*/
|
|
public function user_create($args)
|
|
{
|
|
if (!empty($this->data['user_email']))
|
|
$args['user_email'] = $this->data['user_email'];
|
|
if (!empty($this->data['user_name']))
|
|
$args['user_name'] = $this->data['user_name'];
|
|
if (!empty($this->data['user_alias']))
|
|
$args['user_alias'] = $this->data['user_alias'];
|
|
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Modifies login form adding additional "Login As" field
|
|
*/
|
|
public function login_form($args)
|
|
{
|
|
$this->load_config();
|
|
$this->add_texts('localization/');
|
|
|
|
$rcmail = rcmail::get_instance();
|
|
$admin_login = $rcmail->config->get('kolab_auth_admin_login');
|
|
$group = $rcmail->config->get('kolab_auth_group');
|
|
$role_attr = $rcmail->config->get('kolab_auth_role');
|
|
|
|
// Show "Login As" input
|
|
if (empty($admin_login) || (empty($group) && empty($role_attr))) {
|
|
return $args;
|
|
}
|
|
|
|
$input = new html_inputfield(array('name' => '_loginas', 'id' => 'rcmloginas',
|
|
'type' => 'text', 'autocomplete' => 'off'));
|
|
$row = html::tag('tr', null,
|
|
html::tag('td', 'title', html::label('rcmloginas', Q($this->gettext('loginas'))))
|
|
. html::tag('td', 'input', $input->show(trim(get_input_value('_loginas', RCUBE_INPUT_POST))))
|
|
);
|
|
$args['content'] = preg_replace('/<\/tbody>/i', $row . '</tbody>', $args['content']);
|
|
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Find user credentials In LDAP.
|
|
*/
|
|
public function authenticate($args)
|
|
{
|
|
$this->load_config();
|
|
|
|
if (!$this->init_ldap()) {
|
|
return $args;
|
|
}
|
|
|
|
$rcmail = rcmail::get_instance();
|
|
$admin_login = $rcmail->config->get('kolab_auth_admin_login');
|
|
$admin_pass = $rcmail->config->get('kolab_auth_admin_password');
|
|
$login_attr = $rcmail->config->get('kolab_auth_login');
|
|
$alias_attr = $rcmail->config->get('kolab_auth_alias');
|
|
$name_attr = $rcmail->config->get('kolab_auth_name');
|
|
|
|
// get username and host
|
|
$host = rcube_parse_host($args['host']);
|
|
$user = $args['user'];
|
|
$pass = $args['pass'];
|
|
$loginas = trim(get_input_value('_loginas', RCUBE_INPUT_POST));
|
|
|
|
if (empty($user) || empty($pass)) {
|
|
return $args;
|
|
}
|
|
|
|
// Find user record in LDAP
|
|
$record = $this->get_user_record($user, $host);
|
|
|
|
if (empty($record)) {
|
|
return $args;
|
|
}
|
|
|
|
$role_attr = $rcmail->config->get('kolab_auth_role');
|
|
|
|
if (!empty($role_attr) && !empty($record[$role_attr])) {
|
|
$_SESSION['user_roledns'] = (array)($record[$role_attr]);
|
|
}
|
|
|
|
// Login As...
|
|
if (!empty($loginas) && $admin_login) {
|
|
// Authenticate to LDAP
|
|
$dn = $this->ldap->dn_decode($record['ID']);
|
|
$result = $this->ldap->bind($dn, $pass);
|
|
|
|
if (!$result) {
|
|
return $args;
|
|
}
|
|
|
|
// check if the original user has/belongs to administrative role/group
|
|
$isadmin = false;
|
|
$group = $rcmail->config->get('kolab_auth_group');
|
|
$role_attr = $rcmail->config->get('kolab_auth_role');
|
|
$role_dn = $rcmail->config->get('kolab_auth_role_value');
|
|
|
|
// check role attribute
|
|
if (!empty($role_attr) && !empty($role_dn) && !empty($record[$role_attr])) {
|
|
$role_dn = $this->parse_vars($role_dn, $user, $host);
|
|
foreach ((array)$record[$role_attr] as $role) {
|
|
if ($role == $role_dn) {
|
|
$isadmin = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// check group
|
|
if (!$isadmin && !empty($group)) {
|
|
$groups = $this->ldap->get_record_groups($record['ID']);
|
|
foreach ($groups as $g) {
|
|
if ($group == $this->ldap->dn_decode($g)) {
|
|
$isadmin = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// Save original user login for log (see below)
|
|
if ($login_attr)
|
|
$origname = is_array($record[$login_attr]) ? $record[$login_attr][0] : $record[$login_attr];
|
|
else
|
|
$origname = $user;
|
|
|
|
$record = null;
|
|
|
|
// user has the privilage, get "login as" user credentials
|
|
if ($isadmin) {
|
|
$record = $this->get_user_record($loginas, $host);
|
|
}
|
|
|
|
if (empty($record)) {
|
|
$args['valid'] = false;
|
|
return $args;
|
|
}
|
|
|
|
$args['user'] = $loginas;
|
|
|
|
// Mark session to use SASL proxy for IMAP authentication
|
|
$_SESSION['kolab_auth_admin'] = strtolower($origname);
|
|
$_SESSION['kolab_auth_login'] = $rcmail->encrypt($admin_login);
|
|
$_SESSION['kolab_auth_password'] = $rcmail->encrypt($admin_pass);
|
|
}
|
|
|
|
// Set credentials
|
|
if ($record) {
|
|
// Store UID in session for use by other plugins
|
|
$_SESSION['kolab_uid'] = is_array($record['uid']) ? $record['uid'][0] : $record['uid'];
|
|
|
|
if ($login_attr)
|
|
$this->data['user_login'] = is_array($record[$login_attr]) ? $record[$login_attr][0] : $record[$login_attr];
|
|
if ($alias_attr)
|
|
$this->data['user_alias'] = is_array($record[$alias_attr]) ? $record[$alias_attr][0] : $record[$alias_attr];
|
|
if ($name_attr)
|
|
$this->data['user_name'] = is_array($record[$name_attr]) ? $record[$name_attr][0] : $record[$name_attr];
|
|
|
|
if ($this->data['user_login'])
|
|
$args['user'] = $this->data['user_login'];
|
|
}
|
|
|
|
// Log "Login As" usage
|
|
if (!empty($origname)) {
|
|
write_log('userlogins', sprintf('Admin login for %s by %s from %s',
|
|
$args['user'], $origname, rcmail_remote_ip()));
|
|
}
|
|
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Sets SASL Proxy login/password for IMAP and Managesieve auth
|
|
*/
|
|
public function imap_connect($args)
|
|
{
|
|
if (!empty($_SESSION['kolab_auth_admin'])) {
|
|
$rcmail = rcmail::get_instance();
|
|
$admin_login = $rcmail->decrypt($_SESSION['kolab_auth_login']);
|
|
$admin_pass = $rcmail->decrypt($_SESSION['kolab_auth_password']);
|
|
|
|
$args['auth_cid'] = $admin_login;
|
|
$args['auth_pw'] = $admin_pass;
|
|
}
|
|
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Sets SASL Proxy login/password for SMTP auth
|
|
*/
|
|
public function smtp_connect($args)
|
|
{
|
|
if (!empty($_SESSION['kolab_auth_admin'])) {
|
|
$rcmail = rcmail::get_instance();
|
|
$admin_login = $rcmail->decrypt($_SESSION['kolab_auth_login']);
|
|
$admin_pass = $rcmail->decrypt($_SESSION['kolab_auth_password']);
|
|
|
|
$args['options']['smtp_auth_cid'] = $admin_login;
|
|
$args['options']['smtp_auth_pw'] = $admin_pass;
|
|
}
|
|
|
|
return $args;
|
|
}
|
|
|
|
/**
|
|
* Initializes LDAP object and connects to LDAP server
|
|
*/
|
|
private function init_ldap()
|
|
{
|
|
if ($this->ldap) {
|
|
return $this->ldap->ready;
|
|
}
|
|
|
|
$rcmail = rcmail::get_instance();
|
|
|
|
$addressbook = $rcmail->config->get('kolab_auth_addressbook');
|
|
|
|
if (!is_array($addressbook)) {
|
|
$ldap_config = (array)$rcmail->config->get('ldap_public');
|
|
$addressbook = $ldap_config[$addressbook];
|
|
}
|
|
|
|
if (empty($addressbook)) {
|
|
return false;
|
|
}
|
|
|
|
$this->ldap = new kolab_auth_ldap_backend(
|
|
$addressbook,
|
|
$rcmail->config->get('ldap_debug'),
|
|
$rcmail->config->mail_domain($_SESSION['imap_host'])
|
|
);
|
|
|
|
return $this->ldap->ready;
|
|
}
|
|
|
|
/**
|
|
* Fetches user data from LDAP addressbook
|
|
*/
|
|
private function get_user_record($user, $host)
|
|
{
|
|
$rcmail = rcmail::get_instance();
|
|
$filter = $rcmail->config->get('kolab_auth_filter');
|
|
|
|
$filter = $this->parse_vars($filter, $user, $host);
|
|
|
|
// reset old result
|
|
$this->ldap->reset();
|
|
|
|
// get record
|
|
$this->ldap->set_filter($filter);
|
|
$results = $this->ldap->list_records();
|
|
|
|
if (count($results->records) == 1) {
|
|
return $results->records[0];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Prepares filter query for LDAP search
|
|
*/
|
|
private function parse_vars($str, $user, $host)
|
|
{
|
|
$rcmail = rcmail::get_instance();
|
|
$domain = $rcmail->config->get('username_domain');
|
|
|
|
if (!empty($domain) && strpos($user, '@') === false) {
|
|
if (is_array($domain) && isset($domain[$host]))
|
|
$user .= '@'.rcube_parse_host($domain[$host], $host);
|
|
else if (is_string($domain))
|
|
$user .= '@'.rcube_parse_host($domain, $host);
|
|
}
|
|
|
|
// replace variables in filter
|
|
list($u, $d) = explode('@', $user);
|
|
$dc = 'dc='.strtr($d, array('.' => ',dc=')); // hierarchal domain string
|
|
$replaces = array('%dc' => $dc, '%d' => $d, '%fu' => $user, '%u' => $u);
|
|
|
|
return strtr($str, $replaces);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Wrapper class for rcube_ldap addressbook
|
|
*/
|
|
class kolab_auth_ldap_backend extends rcube_ldap
|
|
{
|
|
function __construct($p, $debug=false, $mail_domain=null)
|
|
{
|
|
parent::__construct($p, $debug, $mail_domain);
|
|
$this->fieldmap['uid'] = 'uid';
|
|
}
|
|
|
|
function set_filter($filter)
|
|
{
|
|
if ($filter) {
|
|
$this->prop['filter'] = $filter;
|
|
}
|
|
}
|
|
}
|