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diff --git a/plugins/kolab_auth/kolab_auth.php b/plugins/kolab_auth/kolab_auth.php
index 26b2425a..5e924d40 100644
--- a/plugins/kolab_auth/kolab_auth.php
+++ b/plugins/kolab_auth/kolab_auth.php
@@ -1,655 +1,662 @@
<?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) 2011-2013, 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
{
static $ldap;
private $data = array();
public function init()
{
$rcmail = rcube::get_instance();
$this->load_config();
$this->add_hook('authenticate', array($this, 'authenticate'));
$this->add_hook('startup', array($this, 'startup'));
$this->add_hook('user_create', array($this, 'user_create'));
// Hook for password change
$this->add_hook('password_ldap_bind', array($this, 'password_ldap_bind'));
// 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'));
$this->add_hook('identity_form', array($this, 'identity_form'));
// Hook to modify some configuration, e.g. ldap
$this->add_hook('config_get', array($this, 'config_get'));
// Enable debug logs per-user, this enables logging only after
// user has logged in
if (!empty($_SESSION['username']) && $rcmail->config->get('kolab_auth_auditlog')) {
$this->add_hook('write_log', array($this, 'write_log'));
$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);
+ $rcmail->config->set('sql_debug', true);
+
+ // SQL debug need to be set directly on DB object
+ // setting config variable will not work here because
+ // the object is already initialized/configured
+ if ($db = $rcmail->get_dbh()) {
+ $db->set_debug(true);
+ }
}
}
public function startup($args)
{
$this->load_user_role_plugins_and_settings();
return $args;
}
/**
* Modify some configuration according to LDAP user record
*/
public function config_get($args)
{
// Replaces ldap_vars (%dc, etc) in public kolab ldap addressbooks
// config based on the users base_dn. (for multi domain support)
if ($args['name'] == 'ldap_public' && !empty($args['result'])) {
$rcmail = rcube::get_instance();
$kolab_books = (array) $rcmail->config->get('kolab_auth_ldap_addressbooks');
foreach ($args['result'] as $name => $config) {
if (in_array($name, $kolab_books) || in_array('*', $kolab_books)) {
$args['result'][$name]['base_dn'] = self::parse_ldap_vars($config['base_dn']);
$args['result'][$name]['search_base_dn'] = self::parse_ldap_vars($config['search_base_dn']);
$args['result'][$name]['bind_dn'] = str_replace('%dn', $_SESSION['kolab_dn'], $config['bind_dn']);
if (!empty($config['groups'])) {
$args['result'][$name]['groups']['base_dn'] = self::parse_ldap_vars($config['groups']['base_dn']);
}
}
}
}
return $args;
}
/**
* Modifies list of plugins and settings according to
* specified LDAP roles
*/
public function load_user_role_plugins_and_settings()
{
if (empty($_SESSION['user_roledns'])) {
return;
}
$rcmail = rcube::get_instance();
// Example 'kolab_auth_role_plugins' =
//
// Array(
// '<role_dn>' => Array('plugin1', 'plugin2'),
// );
//
// NOTE that <role_dn> may in fact be something like: 'cn=role,%dc'
$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)
// ),
// ),
// );
//
// NOTE that <role_dn> may in fact be something like: 'cn=role,%dc'
$role_settings = $rcmail->config->get('kolab_auth_role_settings');
if (!empty($role_plugins)) {
foreach ($role_plugins as $role_dn => $plugins) {
$role_plugins[self::parse_ldap_vars($role_dn)] = $plugins;
}
}
if (!empty($role_settings)) {
foreach ($role_settings as $role_dn => $settings) {
$role_settings[self::parse_ldap_vars($role_dn)] = $settings;
}
}
foreach ($_SESSION['user_roledns'] 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']);
}
}
$dont_override = (array) $rcmail->config->get('dont_override');
if (!isset($setting['allow_override']) || !$setting['allow_override']) {
$rcmail->config->set('dont_override', array_merge($dont_override, array($setting_name)));
}
else {
if (in_array($setting_name, $dont_override)) {
$_dont_override = array();
foreach ($dont_override as $_setting) {
if ($_setting != $setting_name) {
$_dont_override[] = $_setting;
}
}
$rcmail->config->set('dont_override', $_dont_override);
}
}
}
}
}
}
/**
* Logging method replacement to print debug/errors into
* a separate (sub)folder for each user
*/
public function write_log($args)
{
$rcmail = rcube::get_instance();
if ($rcmail->config->get('log_driver') == 'syslog') {
return $args;
}
$line = sprintf("[%s]: %s\n", $args['date'], $args['line']);
// log_driver == 'file' is assumed here
$log_dir = $rcmail->config->get('log_dir', RCUBE_INSTALL_PATH . 'logs');
$log_path = $log_dir.'/'.strtolower($_SESSION['kolab_auth_admin']).'/'.strtolower($_SESSION['username']);
// Append original username + target username
if (!is_dir($log_path)) {
// Attempt to create the directory
if (@mkdir($log_path, 0750, true)) {
$log_dir = $log_path;
}
}
else {
$log_dir = $log_path;
}
// 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);
}
else {
trigger_error("Error writing to log file $logfile; Please check permissions", E_USER_WARNING);
}
$args['abort'] = true;
return $args;
}
/**
* Sets defaults for new user.
*/
public function user_create($args)
{
if (!empty($this->data['user_email'])) {
// addresses list is supported
if (array_key_exists('email_list', $args)) {
$email_list = array_unique($this->data['user_email']);
// add organization to the list
if (!empty($this->data['user_organization'])) {
foreach ($email_list as $idx => $email) {
$email_list[$idx] = array(
'organization' => $this->data['user_organization'],
'email' => $email,
);
}
}
$args['email_list'] = $email_list;
}
else {
$args['user_email'] = $this->data['user_email'][0];
}
}
if (!empty($this->data['user_name'])) {
$args['user_name'] = $this->data['user_name'];
}
return $args;
}
/**
* Modifies login form adding additional "Login As" field
*/
public function login_form($args)
{
$this->add_texts('localization/');
$rcmail = rcube::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(rcube_utils::get_input_value('_loginas', rcube_utils::INPUT_POST))))
);
$args['content'] = preg_replace('/<\/tbody>/i', $row . '</tbody>', $args['content']);
return $args;
}
/**
* Find user credentials In LDAP.
*/
public function authenticate($args)
{
// get username and host
$host = $args['host'];
$user = $args['user'];
$pass = $args['pass'];
$loginas = trim(rcube_utils::get_input_value('_loginas', rcube_utils::INPUT_POST));
if (empty($user) || empty($pass)) {
$args['abort'] = true;
return $args;
}
$ldap = self::ldap();
if (!$ldap || !$ldap->ready) {
$args['abort'] = true;
$message = sprintf(
'Login failure for user %s from %s in session %s (error %s)',
$user,
rcube_utils::remote_ip(),
session_id(),
"LDAP not ready"
);
rcube::write_log('userlogins', $message);
return $args;
}
// Find user record in LDAP
$record = $ldap->get_user_record($user, $host);
if (empty($record)) {
$args['abort'] = true;
$message = sprintf(
'Login failure for user %s from %s in session %s (error %s)',
$user,
rcube_utils::remote_ip(),
session_id(),
"No user record found"
);
rcube::write_log('userlogins', $message);
return $args;
}
$rcmail = rcube::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');
$name_attr = $rcmail->config->get('kolab_auth_name');
$email_attr = $rcmail->config->get('kolab_auth_email');
$org_attr = $rcmail->config->get('kolab_auth_organization');
$role_attr = $rcmail->config->get('kolab_auth_role');
$imap_attr = $rcmail->config->get('kolab_auth_mailhost');
if (!empty($role_attr) && !empty($record[$role_attr])) {
$_SESSION['user_roledns'] = (array)($record[$role_attr]);
}
if (!empty($imap_attr) && !empty($record[$role_attr])) {
$default_host = $rcmail->config->get('default_host');
if (!empty($default_host)) {
rcube::write_log("errors", "Both default host and kolab_auth_mailhost set. Incompatible.");
} else {
$args['host'] = "tls://" . $record[$role_attr];
}
}
// Login As...
if (!empty($loginas) && $admin_login) {
// Authenticate to LDAP
$result = $ldap->bind($record['dn'], $pass);
if (!$result) {
$args['abort'] = true;
$message = sprintf(
'Login failure for user %s from %s in session %s (error %s)',
$user,
rcube_utils::remote_ip(),
session_id(),
"Unable to bind with '" . $record['dn'] . "'"
);
rcube::write_log('userlogins', $message);
return $args;
}
// check if the original user has/belongs to administrative role/group
$isadmin = false;
$group = $rcmail->config->get('kolab_auth_group');
$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 = $ldap->parse_vars($role_dn, $user, $host);
if (in_array($role_dn, (array)$record[$role_attr])) {
$isadmin = true;
}
}
// check group
if (!$isadmin && !empty($group)) {
$groups = $ldap->get_user_groups($record['dn'], $user, $host);
if (in_array($group, $groups)) {
$isadmin = true;
}
}
// Save original user login for log (see below)
if ($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 = $ldap->get_user_record($loginas, $host);
}
if (empty($record)) {
$args['abort'] = true;
$message = sprintf(
'Login failure for user %s (as user %s) from %s in session %s (error %s)',
$user,
$loginas,
rcube_utils::remote_ip(),
session_id(),
"No user record found for '" . $loginas . "'"
);
rcube::write_log('userlogins', $message);
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);
}
// Store UID and DN of logged user in session for use by other plugins
$_SESSION['kolab_uid'] = is_array($record['uid']) ? $record['uid'][0] : $record['uid'];
$_SESSION['kolab_dn'] = $record['dn'];
// Store LDAP replacement variables used for current user
// This improves performance of load_user_role_plugins_and_settings()
// which is executed on every request (via startup hook) and where
// we don't like to use LDAP (connection + bind + search)
$_SESSION['kolab_auth_vars'] = $ldap->get_parse_vars();
// Set user login
if ($login_attr) {
$this->data['user_login'] = is_array($record[$login_attr]) ? $record[$login_attr][0] : $record[$login_attr];
}
if ($this->data['user_login']) {
$args['user'] = $this->data['user_login'];
}
// User name for identity (first log in)
foreach ((array)$name_attr as $field) {
$name = is_array($record[$field]) ? $record[$field][0] : $record[$field];
if (!empty($name)) {
$this->data['user_name'] = $name;
break;
}
}
// User email(s) for identity (first log in)
foreach ((array)$email_attr as $field) {
$email = is_array($record[$field]) ? array_filter($record[$field]) : $record[$field];
if (!empty($email)) {
$this->data['user_email'] = array_merge((array)$this->data['user_email'], (array)$email);
}
}
// Organization name for identity (first log in)
foreach ((array)$org_attr as $field) {
$organization = is_array($record[$field]) ? $record[$field][0] : $record[$field];
if (!empty($organization)) {
$this->data['user_organization'] = $organization;
break;
}
}
// Log "Login As" usage
if (!empty($origname)) {
rcube::write_log('userlogins', sprintf('Admin login for %s by %s from %s',
$args['user'], $origname, rcube_utils::remote_ip()));
}
return $args;
}
/**
* Set user DN for password change (password plugin with ldap_simple driver)
*/
public function password_ldap_bind($args)
{
$args['user_dn'] = $_SESSION['kolab_dn'];
$rcmail = rcube::get_instance();
$rcmail->config->set('password_ldap_method', 'user');
return $args;
}
/**
* Sets SASL Proxy login/password for IMAP and Managesieve auth
*/
public function imap_connect($args)
{
if (!empty($_SESSION['kolab_auth_admin'])) {
$rcmail = rcube::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 = rcube::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 $args;
}
/**
* Hook to replace the plain text input field for email address by a drop-down list
* with all email addresses (including aliases) from this user's LDAP record.
*/
public function identity_form($args)
{
$rcmail = rcube::get_instance();
$ident_level = intval($rcmail->config->get('identities_level', 0));
// do nothing if email address modification is disabled
if ($ident_level == 1 || $ident_level == 3) {
return $args;
}
$ldap = self::ldap();
if (!$ldap || !$ldap->ready || empty($_SESSION['kolab_dn'])) {
return $args;
}
$emails = array();
$user_record = $ldap->get_record($_SESSION['kolab_dn']);
foreach ((array)$rcmail->config->get('kolab_auth_email', array()) as $col) {
$values = rcube_addressbook::get_col_values($col, $user_record, true);
if (!empty($values))
$emails = array_merge($emails, array_filter($values));
}
// kolab_delegation might want to modify this addresses list
$plugin = $rcmail->plugins->exec_hook('kolab_auth_emails', array('emails' => $emails));
$emails = $plugin['emails'];
if (!empty($emails)) {
$args['form']['addressing']['content']['email'] = array(
'type' => 'select',
'options' => array_combine($emails, $emails),
);
}
return $args;
}
/**
* Initializes LDAP object and connects to LDAP server
*/
public static function ldap()
{
if (self::$ldap) {
return self::$ldap;
}
$rcmail = rcube::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($addressbook)) {
return null;
}
require_once __DIR__ . '/kolab_auth_ldap.php';
self::$ldap = new kolab_auth_ldap($addressbook);
return self::$ldap;
}
/**
* Parses LDAP DN string with replacing supported variables.
* See kolab_auth_ldap::parse_vars()
*
* @param string $str LDAP DN string
*
* @return string Parsed DN string
*/
public static function parse_ldap_vars($str)
{
if (!empty($_SESSION['kolab_auth_vars'])) {
$str = strtr($str, $_SESSION['kolab_auth_vars']);
}
return $str;
}
}

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