866 lines
		
	
	
		
			30 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			866 lines
		
	
	
		
			30 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
 | 
						|
/*
 | 
						|
Plugin Name: AuthLDAP
 | 
						|
Plugin URI: https://github.com/heiglandreas/authLdap
 | 
						|
Description: This plugin allows you to use your existing LDAP as authentication base for WordPress
 | 
						|
Version: 2.4.2
 | 
						|
Author: Andreas Heigl <andreas@heigl.org>
 | 
						|
Author URI: http://andreas.heigl.org
 | 
						|
License: MIT
 | 
						|
License URI: https://opensource.org/licenses/MIT
 | 
						|
*/
 | 
						|
 | 
						|
// phpcs:disable PSR1.Files.SideEffects
 | 
						|
 | 
						|
use Org_Heigl\AuthLdap\LdapUri;
 | 
						|
 | 
						|
require_once dirname(__FILE__) . '/ldap.php';
 | 
						|
require_once __DIR__ . '/src/LdapUri.php';
 | 
						|
require_once __DIR__ . '/src/Exception/Error.php';
 | 
						|
require_once __DIR__ . '/src/Exception/InvalidLdapUri.php';
 | 
						|
 | 
						|
function authLdap_debug($message)
 | 
						|
{
 | 
						|
    if (authLdap_get_option('Debug')) {
 | 
						|
        error_log('[AuthLDAP] ' . $message, 0);
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
function authLdap_addmenu()
 | 
						|
{
 | 
						|
    if (! is_multisite()) {
 | 
						|
        add_options_page(
 | 
						|
            'AuthLDAP',
 | 
						|
            'AuthLDAP',
 | 
						|
            'manage_options',
 | 
						|
            basename(__FILE__),
 | 
						|
            'authLdap_options_panel'
 | 
						|
        );
 | 
						|
    } else {
 | 
						|
        add_submenu_page(
 | 
						|
            'settings.php',
 | 
						|
            'AuthLDAP',
 | 
						|
            'AuthLDAP',
 | 
						|
            'manage_options',
 | 
						|
            'authldap',
 | 
						|
            'authLdap_options_panel'
 | 
						|
        );
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
function authLdap_get_post($name, $default = '')
 | 
						|
{
 | 
						|
    return isset($_POST[$name]) ? $_POST[$name] : $default;
 | 
						|
}
 | 
						|
 | 
						|
function authLdap_options_panel()
 | 
						|
{
 | 
						|
    // inclusde style sheet
 | 
						|
    wp_enqueue_style('authLdap-style', plugin_dir_url(__FILE__) . 'authLdap.css');
 | 
						|
 | 
						|
    if (($_SERVER['REQUEST_METHOD'] == 'POST') && array_key_exists('ldapOptionsSave', $_POST)) {
 | 
						|
        $new_options = array(
 | 
						|
            'Enabled'       => authLdap_get_post('authLDAPAuth', false),
 | 
						|
            'CachePW'       => authLdap_get_post('authLDAPCachePW', false),
 | 
						|
            'URI'           => authLdap_get_post('authLDAPURI'),
 | 
						|
            'URISeparator'  => authLdap_get_post('authLDAPURISeparator'),
 | 
						|
            'StartTLS'      => authLdap_get_post('authLDAPStartTLS', false),
 | 
						|
            'Filter'        => authLdap_get_post('authLDAPFilter'),
 | 
						|
            'NameAttr'      => authLdap_get_post('authLDAPNameAttr'),
 | 
						|
            'SecName'       => authLdap_get_post('authLDAPSecName'),
 | 
						|
            'UidAttr'       => authLdap_get_post('authLDAPUidAttr'),
 | 
						|
            'MailAttr'      => authLdap_get_post('authLDAPMailAttr'),
 | 
						|
            'WebAttr'       => authLdap_get_post('authLDAPWebAttr'),
 | 
						|
            'Groups'        => authLdap_get_post('authLDAPGroups', array()),
 | 
						|
            'GroupSeparator'=> authLdap_get_post('authLDAPGroupSeparator', ','),
 | 
						|
            'Debug'         => authLdap_get_post('authLDAPDebug', false),
 | 
						|
            'GroupBase'     => authLdap_get_post('authLDAPGroupBase'),
 | 
						|
            'GroupAttr'     => authLdap_get_post('authLDAPGroupAttr'),
 | 
						|
            'GroupFilter'   => authLdap_get_post('authLDAPGroupFilter'),
 | 
						|
            'DefaultRole'   => authLdap_get_post('authLDAPDefaultRole'),
 | 
						|
            'GroupEnable'   => authLdap_get_post('authLDAPGroupEnable', false),
 | 
						|
            'GroupOverUser' => authLdap_get_post('authLDAPGroupOverUser', false),
 | 
						|
            'DoNotOverwriteNonLdapUsers' => authLdap_get_post('authLDAPDoNotOverwriteNonLdapUsers', false),
 | 
						|
        );
 | 
						|
        if (authLdap_set_options($new_options)) {
 | 
						|
            echo "<div class='updated'><p>Saved Options!</p></div>";
 | 
						|
        } else {
 | 
						|
            echo "<div class='error'><p>Could not save Options!</p></div>";
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    // Do some initialization for the admin-view
 | 
						|
    $authLDAP              = authLdap_get_option('Enabled');
 | 
						|
    $authLDAPCachePW       = authLdap_get_option('CachePW');
 | 
						|
    $authLDAPURI           = authLdap_get_option('URI');
 | 
						|
    $authLDAPURISeparator  = authLdap_get_option('URISeparator');
 | 
						|
    $authLDAPStartTLS      = authLdap_get_option('StartTLS');
 | 
						|
    $authLDAPFilter        = authLdap_get_option('Filter');
 | 
						|
    $authLDAPNameAttr      = authLdap_get_option('NameAttr');
 | 
						|
    $authLDAPSecName       = authLdap_get_option('SecName');
 | 
						|
    $authLDAPMailAttr      = authLdap_get_option('MailAttr');
 | 
						|
    $authLDAPUidAttr       = authLdap_get_option('UidAttr');
 | 
						|
    $authLDAPWebAttr       = authLdap_get_option('WebAttr');
 | 
						|
    $authLDAPGroups        = authLdap_get_option('Groups');
 | 
						|
    $authLDAPGroupSeparator= authLdap_get_option('GroupSeparator');
 | 
						|
    $authLDAPDebug         = authLdap_get_option('Debug');
 | 
						|
    $authLDAPGroupBase     = authLdap_get_option('GroupBase');
 | 
						|
    $authLDAPGroupAttr     = authLdap_get_option('GroupAttr');
 | 
						|
    $authLDAPGroupFilter   = authLdap_get_option('GroupFilter');
 | 
						|
    $authLDAPDefaultRole   = authLdap_get_option('DefaultRole');
 | 
						|
    $authLDAPGroupEnable   = authLdap_get_option('GroupEnable');
 | 
						|
    $authLDAPGroupOverUser = authLdap_get_option('GroupOverUser');
 | 
						|
    $authLDAPDoNotOverwriteNonLdapUsers = authLdap_get_option('DoNotOverwriteNonLdapUsers');
 | 
						|
 | 
						|
    $tChecked              = ($authLDAP)               ? ' checked="checked"' : '';
 | 
						|
    $tDebugChecked         = ($authLDAPDebug)          ? ' checked="checked"' : '';
 | 
						|
    $tPWChecked            = ($authLDAPCachePW)        ? ' checked="checked"' : '';
 | 
						|
    $tGroupChecked         = ($authLDAPGroupEnable)    ? ' checked="checked"' : '';
 | 
						|
    $tGroupOverUserChecked = ($authLDAPGroupOverUser)  ? ' checked="checked"' : '';
 | 
						|
    $tStartTLSChecked      = ($authLDAPStartTLS)       ? ' checked="checked"' : '';
 | 
						|
    $tDoNotOverwriteNonLdapUsers = ($authLDAPDoNotOverwriteNonLdapUsers)       ? ' checked="checked"' : '';
 | 
						|
 | 
						|
    $roles = new WP_Roles();
 | 
						|
 | 
						|
    $action = $_SERVER['REQUEST_URI'];
 | 
						|
    if (! extension_loaded('ldap')) {
 | 
						|
        echo '<div class="warning">The LDAP-Extension is not available on your '
 | 
						|
            . 'WebServer. Therefore Everything you can alter here does not '
 | 
						|
            . 'make any sense!</div>';
 | 
						|
    }
 | 
						|
 | 
						|
    include dirname(__FILE__) . '/view/admin.phtml';
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * get a LDAP server object
 | 
						|
 *
 | 
						|
 * throws exception if there is a problem connecting
 | 
						|
 *
 | 
						|
 * @conf boolean authLDAPDebug true, if debugging should be turned on
 | 
						|
 * @conf string  authLDAPURI LDAP server URI
 | 
						|
 *
 | 
						|
 * @return Org_Heigl\AuthLdap\LdapList LDAP server object
 | 
						|
 */
 | 
						|
function authLdap_get_server()
 | 
						|
{
 | 
						|
    static $_ldapserver = null;
 | 
						|
    if (is_null($_ldapserver)) {
 | 
						|
        $authLDAPDebug = authLdap_get_option('Debug');
 | 
						|
        $authLDAPURI   = explode(
 | 
						|
            authLdap_get_option('URISeparator', ' '),
 | 
						|
            authLdap_get_option('URI')
 | 
						|
        );
 | 
						|
        $authLDAPStartTLS = authLdap_get_option('StartTLS');
 | 
						|
 | 
						|
        //$authLDAPURI = 'ldap:/foo:bar@server/trallala';
 | 
						|
        authLdap_debug('connect to LDAP server');
 | 
						|
        require_once dirname(__FILE__) . '/src/LdapList.php';
 | 
						|
        $_ldapserver = new \Org_Heigl\AuthLdap\LdapList();
 | 
						|
        foreach ($authLDAPURI as $uri) {
 | 
						|
            $_ldapserver->addLdap(new \Org_Heigl\AuthLdap\LDAP(
 | 
						|
                LdapUri::fromString($uri),
 | 
						|
                $authLDAPDebug,
 | 
						|
                $authLDAPStartTLS
 | 
						|
            ));
 | 
						|
        }
 | 
						|
    }
 | 
						|
    return $_ldapserver;
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
/**
 | 
						|
 * This method authenticates a user using either the LDAP or, if LDAP is not
 | 
						|
 * available, the local database
 | 
						|
 *
 | 
						|
 * For this we store the hashed passwords in the WP_Database to ensure working
 | 
						|
 * conditions even without an LDAP-Connection
 | 
						|
 *
 | 
						|
 * @param null|WP_User|WP_Error
 | 
						|
 * @param string $username
 | 
						|
 * @param string $password
 | 
						|
 * @param boolean $already_md5
 | 
						|
 * @return boolean true, if login was successfull or false, if it wasn't
 | 
						|
 * @conf boolean authLDAP true, if authLDAP should be used, false if not. Defaults to false
 | 
						|
 * @conf string authLDAPFilter LDAP filter to use to find correct user, defaults to '(uid=%s)'
 | 
						|
 * @conf string authLDAPNameAttr LDAP attribute containing user (display) name, defaults to 'name'
 | 
						|
 * @conf string authLDAPSecName LDAP attribute containing second name, defaults to ''
 | 
						|
 * @conf string authLDAPMailAttr LDAP attribute containing user e-mail, defaults to 'mail'
 | 
						|
 * @conf string authLDAPUidAttr LDAP attribute containing user id (the username we log on with), defaults to 'uid'
 | 
						|
 * @conf string authLDAPWebAttr LDAP attribute containing user website, defaults to ''
 | 
						|
 * @conf string authLDAPDefaultRole default role for authenticated user, defaults to ''
 | 
						|
 * @conf boolean authLDAPGroupEnable true, if we try to map LDAP groups to Wordpress roles
 | 
						|
 * @conf boolean authLDAPGroupOverUser true, if LDAP Groups have precedence over existing user roles
 | 
						|
 */
 | 
						|
function authLdap_login($user, $username, $password, $already_md5 = false)
 | 
						|
{
 | 
						|
    // don't do anything when authLDAP is disabled
 | 
						|
    if (! authLdap_get_option('Enabled')) {
 | 
						|
        authLdap_debug(
 | 
						|
            'LDAP disabled in AuthLDAP plugin options (use the first option in the AuthLDAP options to enable it)'
 | 
						|
        );
 | 
						|
        return $user;
 | 
						|
    }
 | 
						|
 | 
						|
    // If the user has already been authenticated (only in that case we get a
 | 
						|
    // WP_User-Object as $user) we skip LDAP-authentication and simply return
 | 
						|
    // the existing user-object
 | 
						|
    if ($user instanceof WP_User) {
 | 
						|
        authLdap_debug(sprintf(
 | 
						|
            'User %s has already been authenticated - skipping LDAP-Authentication',
 | 
						|
            $user->get('nickname')
 | 
						|
        ));
 | 
						|
        return $user;
 | 
						|
    }
 | 
						|
 | 
						|
    authLdap_debug("User '$username' logging in");
 | 
						|
 | 
						|
    if ($username == 'admin') {
 | 
						|
        authLdap_debug('Doing nothing for possible local user admin');
 | 
						|
        return $user;
 | 
						|
    }
 | 
						|
 | 
						|
    global $wpdb, $error;
 | 
						|
    try {
 | 
						|
        $authLDAP               = authLdap_get_option('Enabled');
 | 
						|
        $authLDAPFilter         = authLdap_get_option('Filter');
 | 
						|
        $authLDAPNameAttr       = authLdap_get_option('NameAttr');
 | 
						|
        $authLDAPSecName        = authLdap_get_option('SecName');
 | 
						|
        $authLDAPMailAttr       = authLdap_get_option('MailAttr');
 | 
						|
        $authLDAPUidAttr        = authLdap_get_option('UidAttr');
 | 
						|
        $authLDAPWebAttr        = authLdap_get_option('WebAttr');
 | 
						|
        $authLDAPDefaultRole    = authLdap_get_option('DefaultRole');
 | 
						|
        $authLDAPGroupEnable    = authLdap_get_option('GroupEnable');
 | 
						|
        $authLDAPGroupOverUser  = authLdap_get_option('GroupOverUser');
 | 
						|
 | 
						|
        if (! $username) {
 | 
						|
            authLdap_debug('Username not supplied: return false');
 | 
						|
            return false;
 | 
						|
        }
 | 
						|
 | 
						|
        if (! $password) {
 | 
						|
            authLdap_debug('Password not supplied: return false');
 | 
						|
            $error = __('<strong>Error</strong>: The password field is empty.');
 | 
						|
            return false;
 | 
						|
        }
 | 
						|
        // First check for valid values and set appropriate defaults
 | 
						|
        if (! $authLDAPFilter) {
 | 
						|
            $authLDAPFilter = '(uid=%s)';
 | 
						|
        }
 | 
						|
        if (! $authLDAPNameAttr) {
 | 
						|
            $authLDAPNameAttr = 'name';
 | 
						|
        }
 | 
						|
        if (! $authLDAPMailAttr) {
 | 
						|
            $authLDAPMailAttr = 'mail';
 | 
						|
        }
 | 
						|
        if (! $authLDAPUidAttr) {
 | 
						|
            $authLDAPUidAttr = 'uid';
 | 
						|
        }
 | 
						|
 | 
						|
        // If already_md5 is TRUE, then we're getting the user/password from the cookie. As we don't want
 | 
						|
        // to store LDAP passwords in any
 | 
						|
        // form, we've already replaced the password with the hashed username and LDAP_COOKIE_MARKER
 | 
						|
        if ($already_md5) {
 | 
						|
            if ($password == md5($username).md5($ldapCookieMarker)) {
 | 
						|
                authLdap_debug('cookie authentication');
 | 
						|
                return true;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        // Remove slashes as noted on https://github.com/heiglandreas/authLdap/issues/108
 | 
						|
        $password = stripslashes_deep($password);
 | 
						|
 | 
						|
        // No cookie, so have to authenticate them via LDAP
 | 
						|
        $result = false;
 | 
						|
        try {
 | 
						|
            authLdap_debug('about to do LDAP authentication');
 | 
						|
            $result = authLdap_get_server()->Authenticate($username, $password, $authLDAPFilter);
 | 
						|
        } catch (Exception $e) {
 | 
						|
            authLdap_debug('LDAP authentication failed with exception: ' . $e->getMessage());
 | 
						|
            return false;
 | 
						|
        }
 | 
						|
 | 
						|
        // Rebind with the default credentials after the user has been loged in
 | 
						|
        // Otherwise the credentials of the user trying to login will be used
 | 
						|
        // This fixes #55
 | 
						|
        authLdap_get_server()->bind();
 | 
						|
 | 
						|
        if (true !== $result) {
 | 
						|
            authLdap_debug('LDAP authentication failed');
 | 
						|
            // TODO what to return? WP_User object, true, false, even an WP_Error object...
 | 
						|
            // all seem to fall back to normal wp user authentication
 | 
						|
            return;
 | 
						|
        }
 | 
						|
 | 
						|
        authLdap_debug('LDAP authentication successfull');
 | 
						|
        $attributes = array_values(
 | 
						|
            array_filter(
 | 
						|
                array(
 | 
						|
                    $authLDAPNameAttr,
 | 
						|
                    $authLDAPSecName,
 | 
						|
                    $authLDAPMailAttr,
 | 
						|
                    $authLDAPWebAttr,
 | 
						|
                    $authLDAPUidAttr
 | 
						|
                )
 | 
						|
            )
 | 
						|
        );
 | 
						|
 | 
						|
        try {
 | 
						|
            $attribs = authLdap_get_server()->search(
 | 
						|
                sprintf($authLDAPFilter, $username),
 | 
						|
                $attributes
 | 
						|
            );
 | 
						|
            // First get all the relevant group informations so we can see if
 | 
						|
            // whether have been changes in group association of the user
 | 
						|
            if (! isset($attribs[0]['dn'])) {
 | 
						|
                authLdap_debug('could not get user attributes from LDAP');
 | 
						|
                throw new UnexpectedValueException('dn has not been returned');
 | 
						|
            }
 | 
						|
            if (! isset($attribs[0][strtolower($authLDAPUidAttr)][0])) {
 | 
						|
                authLdap_debug('could not get user attributes from LDAP');
 | 
						|
                throw new UnexpectedValueException('The user-ID attribute has not been returned');
 | 
						|
            }
 | 
						|
 | 
						|
            $dn = $attribs[0]['dn'];
 | 
						|
            $realuid = $attribs[0][strtolower($authLDAPUidAttr)][0];
 | 
						|
        } catch (Exception $e) {
 | 
						|
            authLdap_debug('Exception getting LDAP user: ' . $e->getMessage());
 | 
						|
            return false;
 | 
						|
        }
 | 
						|
 | 
						|
        $uid = authLdap_get_uid($realuid);
 | 
						|
 | 
						|
        // This fixes #172
 | 
						|
        if (true == authLdap_get_option('DoNotOverwriteNonLdapUsers', false)) {
 | 
						|
            if (! get_user_meta($uid, 'authLDAP')) {
 | 
						|
                return null;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        $role = '';
 | 
						|
 | 
						|
        // we only need this if either LDAP groups are disabled or
 | 
						|
        // if the WordPress role of the user overrides LDAP groups
 | 
						|
        if (!$authLDAPGroupEnable || !$authLDAPGroupOverUser) {
 | 
						|
            $role = authLdap_user_role($uid);
 | 
						|
        }
 | 
						|
 | 
						|
        // do LDAP group mapping if needed
 | 
						|
        // (if LDAP groups override worpress user role, $role is still empty)
 | 
						|
        if (empty($role) && $authLDAPGroupEnable) {
 | 
						|
            $role = authLdap_groupmap($realuid, $dn);
 | 
						|
            authLdap_debug('role from group mapping: ' . $role);
 | 
						|
        }
 | 
						|
 | 
						|
        // if we don't have a role yet, use default role
 | 
						|
        if (empty($role) && !empty($authLDAPDefaultRole)) {
 | 
						|
            authLdap_debug('no role yet, set default role');
 | 
						|
            $role = $authLDAPDefaultRole;
 | 
						|
        }
 | 
						|
 | 
						|
        if (empty($role)) {
 | 
						|
            // Sorry, but you are not in any group that is allowed access
 | 
						|
            trigger_error('no group found');
 | 
						|
            authLdap_debug('user is not in any group that is allowed access');
 | 
						|
            return false;
 | 
						|
        } else {
 | 
						|
            $roles = new WP_Roles();
 | 
						|
            // not sure if this is needed, but it can't hurt
 | 
						|
            if (!$roles->is_role($role)) {
 | 
						|
                trigger_error('no group found');
 | 
						|
                authLdap_debug('role is invalid');
 | 
						|
                return false;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        // from here on, the user has access!
 | 
						|
        // now, lets update some user details
 | 
						|
        $user_info = array();
 | 
						|
        $user_info['user_login'] = $realuid;
 | 
						|
        $user_info['role'] = $role;
 | 
						|
        $user_info['user_email'] = '';
 | 
						|
 | 
						|
        // first name
 | 
						|
        if (isset($attribs[0][strtolower($authLDAPNameAttr)][0])) {
 | 
						|
            $user_info['first_name'] = $attribs[0][strtolower($authLDAPNameAttr)][0];
 | 
						|
        }
 | 
						|
 | 
						|
        // last name
 | 
						|
        if (isset($attribs[0][strtolower($authLDAPSecName)][0])) {
 | 
						|
            $user_info['last_name'] = $attribs[0][strtolower($authLDAPSecName)][0];
 | 
						|
        }
 | 
						|
 | 
						|
        // mail address
 | 
						|
        if (isset($attribs[0][strtolower($authLDAPMailAttr)][0])) {
 | 
						|
            $user_info['user_email'] = $attribs[0][strtolower($authLDAPMailAttr)][0];
 | 
						|
        }
 | 
						|
 | 
						|
        // website
 | 
						|
        if (isset($attribs[0][strtolower($authLDAPWebAttr)][0])) {
 | 
						|
            $user_info['user_url'] = $attribs[0][strtolower($authLDAPWebAttr)][0];
 | 
						|
        }
 | 
						|
        // display name, nickname, nicename
 | 
						|
        if (array_key_exists('first_name', $user_info)) {
 | 
						|
            $user_info['display_name'] = $user_info['first_name'];
 | 
						|
            $user_info['nickname'] = $user_info['first_name'];
 | 
						|
            $user_info['user_nicename'] = sanitize_title_with_dashes($user_info['first_name']);
 | 
						|
            if (array_key_exists('last_name', $user_info)) {
 | 
						|
                $user_info['display_name'] .= ' ' . $user_info['last_name'];
 | 
						|
                $user_info['nickname'] .= ' ' . $user_info['last_name'];
 | 
						|
                $user_info['user_nicename'] .= '_' . sanitize_title_with_dashes($user_info['last_name']);
 | 
						|
            }
 | 
						|
        }
 | 
						|
        $user_info['user_nicename'] = substr($user_info['user_nicename'], 0, 50);
 | 
						|
  
 | 
						|
        // optionally store the password into the wordpress database
 | 
						|
        if (authLdap_get_option('CachePW')) {
 | 
						|
            // Password will be hashed inside wp_update_user or wp_insert_user
 | 
						|
            $user_info['user_pass'] = $password;
 | 
						|
        } else {
 | 
						|
            // clear the password
 | 
						|
            $user_info['user_pass'] = '';
 | 
						|
        }
 | 
						|
 | 
						|
        // add uid if user exists
 | 
						|
        if ($uid) {
 | 
						|
            // found user in the database
 | 
						|
            authLdap_debug('The LDAP user has an entry in the WP-Database');
 | 
						|
            $user_info['ID'] = $uid;
 | 
						|
            unset($user_info['display_name'], $user_info['nickname']);
 | 
						|
            $userid = wp_update_user($user_info);
 | 
						|
        } else {
 | 
						|
            // new wordpress account will be created
 | 
						|
            authLdap_debug('The LDAP user does not have an entry in the WP-Database, a new WP account will be created');
 | 
						|
 | 
						|
            $userid = wp_insert_user($user_info);
 | 
						|
        }
 | 
						|
 | 
						|
        // if the user exists, wp_insert_user will update the existing user record
 | 
						|
        if (is_wp_error($userid)) {
 | 
						|
            authLdap_debug('Error creating user : ' . $userid->get_error_message());
 | 
						|
            trigger_error('Error creating user: ' . $userid->get_error_message());
 | 
						|
            return $userid;
 | 
						|
        }
 | 
						|
 | 
						|
        authLdap_debug('user id = ' . $userid);
 | 
						|
 | 
						|
        // flag the user as an ldap user so we can hide the password fields in the user profile
 | 
						|
        update_user_meta($userid, 'authLDAP', true);
 | 
						|
 | 
						|
        // return a user object upon positive authorization
 | 
						|
        return new WP_User($userid);
 | 
						|
    } catch (Exception $e) {
 | 
						|
        authLdap_debug($e->getMessage() . '. Exception thrown in line ' . $e->getLine());
 | 
						|
        trigger_error($e->getMessage() . '. Exception thrown in line ' . $e->getLine());
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Get user's user id
 | 
						|
 *
 | 
						|
 * Returns null if username not found
 | 
						|
 *
 | 
						|
 * @param string $username username
 | 
						|
 * @param string user id, null if not found
 | 
						|
 */
 | 
						|
function authLdap_get_uid($username)
 | 
						|
{
 | 
						|
    global $wpdb;
 | 
						|
 | 
						|
    // find out whether the user is already present in the database
 | 
						|
    $uid = $wpdb->get_var(
 | 
						|
        $wpdb->prepare(
 | 
						|
            "SELECT ID FROM {$wpdb->users} WHERE user_login = %s",
 | 
						|
            $username
 | 
						|
        )
 | 
						|
    );
 | 
						|
    if ($uid) {
 | 
						|
        authLdap_debug("Existing user, uid = {$uid}");
 | 
						|
        return $uid;
 | 
						|
    } else {
 | 
						|
        return  null;
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Get the user's current role
 | 
						|
 *
 | 
						|
 * Returns empty string if not found.
 | 
						|
 *
 | 
						|
 * @param int $uid wordpress user id
 | 
						|
 * @return string role, empty if none found
 | 
						|
 */
 | 
						|
function authLdap_user_role($uid)
 | 
						|
{
 | 
						|
    global $wpdb;
 | 
						|
 | 
						|
    if (!$uid) {
 | 
						|
        return '';
 | 
						|
    }
 | 
						|
 | 
						|
    $meta_value = $wpdb->get_var(
 | 
						|
        "SELECT meta_value FROM {$wpdb->usermeta} WHERE meta_key = '{$wpdb->prefix}capabilities' AND user_id = {$uid}"
 | 
						|
    );
 | 
						|
 | 
						|
    if (!$meta_value) {
 | 
						|
        return '';
 | 
						|
    }
 | 
						|
 | 
						|
    $capabilities = unserialize($meta_value);
 | 
						|
    $roles = is_array($capabilities) ? array_keys($capabilities) : array('');
 | 
						|
    $role = $roles[0];
 | 
						|
 | 
						|
    authLdap_debug("Existing user's role: {$role}");
 | 
						|
    return $role;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Get LDAP groups for user and map to role
 | 
						|
 *
 | 
						|
 * @param string $username
 | 
						|
 * @param string $dn
 | 
						|
 * @return string role, empty string if no mapping found, first found role otherwise
 | 
						|
 * @conf array authLDAPGroups, associative array, role => ldap_group
 | 
						|
 * @conf string authLDAPGroupBase, base dn to look up groups
 | 
						|
 * @conf string authLDAPGroupAttr, ldap attribute that holds name of group
 | 
						|
 * @conf string authLDAPGroupFilter, LDAP filter to find groups. can contain %s and %dn% placeholders
 | 
						|
 */
 | 
						|
function authLdap_groupmap($username, $dn)
 | 
						|
{
 | 
						|
    $authLDAPGroups         = authLdap_sort_roles_by_capabilities(
 | 
						|
        authLdap_get_option('Groups')
 | 
						|
    );
 | 
						|
    $authLDAPGroupBase      = authLdap_get_option('GroupBase');
 | 
						|
    $authLDAPGroupAttr      = authLdap_get_option('GroupAttr');
 | 
						|
    $authLDAPGroupFilter    = authLdap_get_option('GroupFilter');
 | 
						|
    $authLDAPGroupSeparator = authLdap_get_option('GroupSeparator');
 | 
						|
    if (! $authLDAPGroupAttr) {
 | 
						|
        $authLDAPGroupAttr = 'gidNumber';
 | 
						|
    }
 | 
						|
    if (! $authLDAPGroupFilter) {
 | 
						|
        $authLDAPGroupFilter = '(&(objectClass=posixGroup)(memberUid=%s))';
 | 
						|
    }
 | 
						|
    if (! $authLDAPGroupSeparator) {
 | 
						|
        $authLDAPGroupSeparator = ',';
 | 
						|
    }
 | 
						|
 | 
						|
    if (!is_array($authLDAPGroups) || count(array_filter(array_values($authLDAPGroups))) == 0) {
 | 
						|
        authLdap_debug('No group names defined');
 | 
						|
        return '';
 | 
						|
    }
 | 
						|
 | 
						|
    try {
 | 
						|
        // To allow searches based on the DN instead of the uid, we replace the
 | 
						|
        // string %dn% with the users DN.
 | 
						|
        $authLDAPGroupFilter = str_replace(
 | 
						|
            '%dn%',
 | 
						|
            ldap_escape($dn, '', LDAP_ESCAPE_FILTER),
 | 
						|
            $authLDAPGroupFilter
 | 
						|
        );
 | 
						|
        authLdap_debug('Group Filter: ' . json_encode($authLDAPGroupFilter));
 | 
						|
        authLdap_debug('Group Base: ' . $authLDAPGroupBase);
 | 
						|
        $groups = authLdap_get_server()->search(
 | 
						|
            sprintf($authLDAPGroupFilter, ldap_escape($username, '', LDAP_ESCAPE_FILTER)),
 | 
						|
            array($authLDAPGroupAttr),
 | 
						|
            $authLDAPGroupBase
 | 
						|
        );
 | 
						|
    } catch (Exception $e) {
 | 
						|
        authLdap_debug('Exception getting LDAP group attributes: ' . $e->getMessage());
 | 
						|
        return '';
 | 
						|
    }
 | 
						|
 | 
						|
    $grp = array();
 | 
						|
    for ($i = 0; $i < $groups ['count']; $i++) {
 | 
						|
        for ($k = 0; $k < $groups[$i][strtolower($authLDAPGroupAttr)]['count']; $k++) {
 | 
						|
            $grp[] = $groups[$i][strtolower($authLDAPGroupAttr)][$k];
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    authLdap_debug('LDAP groups: ' . json_encode($grp));
 | 
						|
 | 
						|
    // Check whether the user is member of one of the groups that are
 | 
						|
    // allowed acces to the blog. If the user is not member of one of
 | 
						|
    // The groups throw her out! ;-)
 | 
						|
    // If the user is member of more than one group only the first one
 | 
						|
    // will be taken into account!
 | 
						|
 | 
						|
    $role = '';
 | 
						|
    foreach ($authLDAPGroups as $key => $val) {
 | 
						|
        $currentGroup = explode($authLDAPGroupSeparator, $val);
 | 
						|
        // Remove whitespaces around the group-ID
 | 
						|
        $currentGroup = array_map('trim', $currentGroup);
 | 
						|
        if (0 < count(array_intersect($currentGroup, $grp))) {
 | 
						|
            $role = $key;
 | 
						|
            break;
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    authLdap_debug("Role from LDAP group: {$role}");
 | 
						|
    return $role;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * This function disables the password-change fields in the users preferences.
 | 
						|
 *
 | 
						|
 * It does not make sense to authenticate via LDAP and then allow the user to
 | 
						|
 * change the password only in the wordpress database. And changing the password
 | 
						|
 * LDAP-wide can not be the scope of Wordpress!
 | 
						|
 *
 | 
						|
 * Whether the user is an LDAP-User or not is determined using the authLDAP-Flag
 | 
						|
 * of the users meta-informations
 | 
						|
 *
 | 
						|
 * @return false, if the user whose prefs are viewed is an LDAP-User, true if
 | 
						|
 * he isn't
 | 
						|
 * @conf boolean authLDAP
 | 
						|
 */
 | 
						|
function authLdap_show_password_fields($return, $user)
 | 
						|
{
 | 
						|
    if (! $user) {
 | 
						|
        return true;
 | 
						|
    }
 | 
						|
 | 
						|
    if (get_user_meta($user->ID, 'authLDAP')) {
 | 
						|
        return false;
 | 
						|
    }
 | 
						|
 | 
						|
    return $return;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * This function disables the password reset for a user.
 | 
						|
 *
 | 
						|
 * It does not make sense to authenticate via LDAP and then allow the user to
 | 
						|
 * reset the password only in the wordpress database. And changing the password
 | 
						|
 * LDAP-wide can not be the scope of Wordpress!
 | 
						|
 *
 | 
						|
 * Whether the user is an LDAP-User or not is determined using the authLDAP-Flag
 | 
						|
 * of the users meta-informations
 | 
						|
 *
 | 
						|
 * @author chaplina (https://github.com/chaplina)
 | 
						|
 * @conf boolean authLDAP
 | 
						|
 * @return false, if the user is an LDAP-User, true if he isn't
 | 
						|
 */
 | 
						|
function authLdap_allow_password_reset($return, $userid)
 | 
						|
{
 | 
						|
    if (!(isset($userid))) {
 | 
						|
        return true;
 | 
						|
    }
 | 
						|
 | 
						|
    if (get_user_meta($userid, 'authLDAP')) {
 | 
						|
        return false;
 | 
						|
    }
 | 
						|
    return $return;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Sort the given roles by number of capabilities
 | 
						|
 *
 | 
						|
 * @param array $roles
 | 
						|
 *
 | 
						|
 * @return array
 | 
						|
 */
 | 
						|
function authLdap_sort_roles_by_capabilities($roles)
 | 
						|
{
 | 
						|
    global $wpdb;
 | 
						|
    $myRoles = get_option($wpdb->get_blog_prefix() . 'user_roles');
 | 
						|
 | 
						|
    authLdap_debug(print_r($roles, true));
 | 
						|
    uasort($myRoles, 'authLdap_sortByCapabilitycount');
 | 
						|
 | 
						|
    $return = array();
 | 
						|
 | 
						|
    foreach ($myRoles as $key => $role) {
 | 
						|
        if (isset($roles[$key])) {
 | 
						|
            $return[$key] = $roles[$key];
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    authLdap_debug(print_r($return, true));
 | 
						|
    return $return;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Sort according to the number of capabilities
 | 
						|
 *
 | 
						|
 * @param $a
 | 
						|
 * @param $b
 | 
						|
 */
 | 
						|
function authLdap_sortByCapabilitycount($a, $b)
 | 
						|
{
 | 
						|
    if (count($a['capabilities']) > count($b['capabilities'])) {
 | 
						|
        return -1;
 | 
						|
    }
 | 
						|
    if (count($a['capabilities']) < count($b['capabilities'])) {
 | 
						|
        return 1;
 | 
						|
    }
 | 
						|
 | 
						|
    return 0;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Load AuthLDAP Options
 | 
						|
 *
 | 
						|
 * Sets and stores defaults if options are not up to date
 | 
						|
 */
 | 
						|
function authLdap_load_options($reload = false)
 | 
						|
{
 | 
						|
    static $options = null;
 | 
						|
 | 
						|
    // the current version for options
 | 
						|
    $option_version_plugin = 1;
 | 
						|
 | 
						|
    $optionFunction = 'get_option';
 | 
						|
    if (is_multisite()) {
 | 
						|
        $optionFunction = 'get_site_option';
 | 
						|
    }
 | 
						|
    if (is_null($options) || $reload) {
 | 
						|
        $options = $optionFunction('authLDAPOptions', array());
 | 
						|
    }
 | 
						|
 | 
						|
    // check if option version has changed (or if it's there at all)
 | 
						|
    if (!isset($options['Version']) || ($options['Version'] != $option_version_plugin)) {
 | 
						|
        // defaults for all options
 | 
						|
        $options_default = array(
 | 
						|
            'Enabled'       => false,
 | 
						|
            'CachePW'       => false,
 | 
						|
            'URI'           => '',
 | 
						|
            'URISeparator'  => ' ',
 | 
						|
            'Filter'        => '', // '(uid=%s)'
 | 
						|
            'NameAttr'      => '', // 'name'
 | 
						|
            'SecName'       => '',
 | 
						|
            'UidAttr'       => '', // 'uid'
 | 
						|
            'MailAttr'      => '', // 'mail'
 | 
						|
            'WebAttr'       => '',
 | 
						|
            'Groups'        => array(),
 | 
						|
            'Debug'         => false,
 | 
						|
            'GroupAttr'     => '', // 'gidNumber'
 | 
						|
            'GroupFilter'   => '', // '(&(objectClass=posixGroup)(memberUid=%s))'
 | 
						|
            'DefaultRole'   => '',
 | 
						|
            'GroupEnable'   => true,
 | 
						|
            'GroupOverUser' => true,
 | 
						|
            'Version'       => $option_version_plugin,
 | 
						|
            'DoNotOverwriteNonLdapUsers' => false,
 | 
						|
        );
 | 
						|
 | 
						|
        // check if we got a version
 | 
						|
        if (!isset($options['Version'])) {
 | 
						|
            // we just changed to the new option format
 | 
						|
            // read old options, then delete them
 | 
						|
            $old_option_new_option = array(
 | 
						|
                'authLDAP'              => 'Enabled',
 | 
						|
                'authLDAPCachePW'       => 'CachePW',
 | 
						|
                'authLDAPURI'           => 'URI',
 | 
						|
                'authLDAPFilter'        => 'Filter',
 | 
						|
                'authLDAPNameAttr'      => 'NameAttr',
 | 
						|
                'authLDAPSecName'       => 'SecName',
 | 
						|
                'authLDAPUidAttr'       => 'UidAttr',
 | 
						|
                'authLDAPMailAttr'      => 'MailAttr',
 | 
						|
                'authLDAPWebAttr'       => 'WebAttr',
 | 
						|
                'authLDAPGroups'        => 'Groups',
 | 
						|
                'authLDAPDebug'         => 'Debug',
 | 
						|
                'authLDAPGroupAttr'     => 'GroupAttr',
 | 
						|
                'authLDAPGroupFilter'   => 'GroupFilter',
 | 
						|
                'authLDAPDefaultRole'   => 'DefaultRole',
 | 
						|
                'authLDAPGroupEnable'   => 'GroupEnable',
 | 
						|
                'authLDAPGroupOverUser' => 'GroupOverUser',
 | 
						|
            );
 | 
						|
            foreach ($old_option_new_option as $old_option => $new_option) {
 | 
						|
                $value = get_option($old_option, null);
 | 
						|
                if (!is_null($value)) {
 | 
						|
                    $options[$new_option] = $value;
 | 
						|
                }
 | 
						|
                delete_option($old_option);
 | 
						|
            }
 | 
						|
            delete_option('authLDAPCookieMarker');
 | 
						|
            delete_option('authLDAPCookierMarker');
 | 
						|
        }
 | 
						|
 | 
						|
        // set default for all options that are missing
 | 
						|
        foreach ($options_default as $key => $default) {
 | 
						|
            if (!isset($options[$key])) {
 | 
						|
                $options[$key] = $default;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        // set new version and save
 | 
						|
        $options['Version'] = $option_version_plugin;
 | 
						|
        update_option('authLDAPOptions', $options);
 | 
						|
    }
 | 
						|
    return $options;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Get an individual option
 | 
						|
 */
 | 
						|
function authLdap_get_option($optionname, $default = null)
 | 
						|
{
 | 
						|
    $options = authLdap_load_options();
 | 
						|
    if (isset($options[$optionname]) && $options[$optionname]) {
 | 
						|
        return $options[$optionname];
 | 
						|
    }
 | 
						|
 | 
						|
    if (null !== $default) {
 | 
						|
        return $default;
 | 
						|
    }
 | 
						|
 | 
						|
    //authLdap_debug('option name invalid: ' . $optionname);
 | 
						|
    return null;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Set new options
 | 
						|
 */
 | 
						|
function authLdap_set_options($new_options = array())
 | 
						|
{
 | 
						|
    // initialize the options with what we currently have
 | 
						|
    $options = authLdap_load_options();
 | 
						|
 | 
						|
    // set the new options supplied
 | 
						|
    foreach ($new_options as $key => $value) {
 | 
						|
        $options[$key] = $value;
 | 
						|
    }
 | 
						|
 | 
						|
    // store options
 | 
						|
    $optionFunction = 'update_option';
 | 
						|
    if (is_multisite()) {
 | 
						|
        $optionFunction = 'update_site_option';
 | 
						|
    }
 | 
						|
    if ($optionFunction('authLDAPOptions', $options)) {
 | 
						|
        // reload the option cache
 | 
						|
        authLdap_load_options(true);
 | 
						|
 | 
						|
        return true;
 | 
						|
    }
 | 
						|
 | 
						|
    // could not set options
 | 
						|
    return false;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Do not send an email after changing the password or the email of the user!
 | 
						|
 *
 | 
						|
 * @param boolean $result      The initial resturn value
 | 
						|
 * @param array   $user        The old userdata
 | 
						|
 * @param array   $newUserData The changed userdata
 | 
						|
 *
 | 
						|
 * @return bool
 | 
						|
 */
 | 
						|
function authLdap_send_change_email($result, $user, $newUserData)
 | 
						|
{
 | 
						|
    if (get_usermeta($user['ID'], 'authLDAP')) {
 | 
						|
        return false;
 | 
						|
    }
 | 
						|
 | 
						|
    return $result;
 | 
						|
}
 | 
						|
 | 
						|
$hook = is_multisite() ? 'network_' : '';
 | 
						|
add_action($hook . 'admin_menu', 'authLdap_addmenu');
 | 
						|
add_filter('show_password_fields', 'authLdap_show_password_fields', 10, 2);
 | 
						|
add_filter('allow_password_reset', 'authLdap_allow_password_reset', 10, 2);
 | 
						|
add_filter('authenticate', 'authLdap_login', 10, 3);
 | 
						|
/** This only works from WP 4.3.0 on */
 | 
						|
add_filter('send_password_change_email', 'authLdap_send_change_email', 10, 3);
 | 
						|
add_filter('send_email_change_email', 'authLdap_send_change_email', 10, 3);
 |