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93 lines
2.9 KiB
PHP
93 lines
2.9 KiB
PHP
<?php
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/**
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* HTTP Basic Authentication
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*
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* Make use of an existing HTTP authentication and perform login with the existing user credentials
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*
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* Configuration:
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* // redirect the client to this URL after logout. This page is then responsible to clear HTTP auth
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* $config['logout_url'] = 'http://server.tld/logout.html';
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*
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* See logout.html (in this directory) for an example how HTTP auth can be cleared.
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*
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* For other configuration options, see config.inc.php.dist!
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*
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* @version @package_version@
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* @license GNU GPLv3+
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* @author Thomas Bruederli
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*/
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class http_authentication extends rcube_plugin
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{
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function init()
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{
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$this->add_hook('startup', array($this, 'startup'));
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$this->add_hook('authenticate', array($this, 'authenticate'));
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$this->add_hook('logout_after', array($this, 'logout'));
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}
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function startup($args)
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{
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if (!empty($_SERVER['PHP_AUTH_USER']) && !empty($_SERVER['PHP_AUTH_PW'])) {
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$rcmail = rcmail::get_instance();
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$rcmail->add_shutdown_function(array('http_authentication', 'shutdown'));
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// handle login action
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if (empty($args['action']) && empty($_SESSION['user_id'])) {
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$args['action'] = 'login';
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}
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// Set user password in session (see shutdown() method for more info)
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else if (!empty($_SESSION['user_id']) && empty($_SESSION['password'])) {
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$_SESSION['password'] = $rcmail->encrypt($_SERVER['PHP_AUTH_PW']);
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}
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}
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return $args;
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}
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function authenticate($args)
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{
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// Load plugin's config file
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$this->load_config();
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$host = rcmail::get_instance()->config->get('http_authentication_host');
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if (is_string($host) && trim($host) !== '' && empty($args['host']))
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$args['host'] = rcube_utils::idn_to_ascii(rcube_utils::parse_host($host));
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// Allow entering other user data in login form,
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// e.g. after log out (#1487953)
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if (!empty($args['user'])) {
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return $args;
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}
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if (!empty($_SERVER['PHP_AUTH_USER']) && !empty($_SERVER['PHP_AUTH_PW'])) {
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$args['user'] = $_SERVER['PHP_AUTH_USER'];
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$args['pass'] = $_SERVER['PHP_AUTH_PW'];
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}
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$args['cookiecheck'] = false;
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$args['valid'] = true;
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return $args;
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}
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function logout($args)
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{
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// redirect to configured URL in order to clear HTTP auth credentials
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if (!empty($_SERVER['PHP_AUTH_USER']) && $args['user'] == $_SERVER['PHP_AUTH_USER']) {
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if ($url = rcmail::get_instance()->config->get('logout_url')) {
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header("Location: $url", true, 307);
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}
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}
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}
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function shutdown()
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{
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// There's no need to store password (even if encrypted) in session
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// We'll set it back on startup (#1486553)
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rcmail::get_instance()->session->remove('password');
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}
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}
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