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<?php
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/*
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* index.php
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*
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* part of pfSense (https://www.pfsense.org)
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* Copyright (c) 2004-2013 BSD Perimeter
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* Copyright (c) 2013-2016 Electric Sheep Fencing
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* Copyright (c) 2014-2020 Rubicon Communications, LLC (Netgate)
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* All rights reserved.
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*
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* Originally part of m0n0wall (http://m0n0.ch/wall)
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* Copyright (c) 2003-2006 Manuel Kasper <mk@neon1.net>.
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* All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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require_once("auth.inc");
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require_once("functions.inc");
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require_once("captiveportal.inc");
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header("Expires: 0");
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header("Cache-Control: no-cache, no-store, must-revalidate");
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header("Pragma: no-cache");
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header("Connection: close");
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global $cpzone, $cpzoneid;
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$cpzone = strtolower($_REQUEST['zone']);
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$cpcfg = $config['captiveportal'][$cpzone];
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if (empty($cpcfg)) {
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log_error("Submission to captiveportal with unknown parameter zone: " . htmlspecialchars($cpzone));
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portal_reply_page($redirurl, "error", gettext("Internal error"));
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ob_flush();
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return;
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}
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$cpzoneid = $cpcfg['zoneid'];
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$orig_host = $_SERVER['HTTP_HOST'];
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/* NOTE: IE 8/9 is buggy and that is why this is needed */
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$orig_request = trim($_REQUEST['redirurl'], " /");
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$clientip = $_SERVER['REMOTE_ADDR'];
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if (!$clientip) {
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/* not good - bail out */
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log_error("Zone: {$cpzone} - Captive portal could not determine client's IP address.");
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$errormsg = gettext("An error occurred. Please check the system logs for more information.");
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portal_reply_page($redirurl, "error", $errormsg);
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ob_flush();
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return;
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}
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$cpsession = captiveportal_isip_logged($clientip);
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$ourhostname = portal_hostname_from_client_ip($clientip);
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/* Automatically switching to the logout page requires a custom logout page to be present. */
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if ((!empty($cpsession)) && (! $_POST['logout_id']) && (!empty($cpcfg['page']['logouttext']))) {
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/* if client already connected and a custom logout page is set : show logout page */
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$protocol = (isset($config['captiveportal'][$cpzone]['httpslogin'])) ? 'https://' : 'http://';
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$logouturl = "{$protocol}{$ourhostname}/";
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$sessionid = $cpsession['sessionid'];
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$attributes = array();
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if (!empty($cpsession['session_timeout']))
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$attributes['session_timeout'] = $cpsession['session_timeout'];
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if (!empty($cpsession['session_terminate_time']))
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$attributes['session_terminate_time'] = $cpsession['session_terminate_time'];
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include("{$g['varetc_path']}/captiveportal-{$cpzone}-logout.html");
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ob_flush();
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return;
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} elseif (!empty($cpsession) && (!isset($_POST['logout_id']) || !isset($config['captiveportal'][$cpzone]['logoutwin_enable']))) {
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/* If client try to access captive portal page while already connected,
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but no custom logout page does exist and logout popup is disabled */
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echo gettext("You are connected.");
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ob_flush();
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return;
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} elseif ($orig_host != $ourhostname) {
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/* the client thinks it's connected to the desired web server, but instead
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it's connected to us. Issue a redirect... */
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$protocol = (isset($cpcfg['httpslogin'])) ? 'https://' : 'http://';
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header("Location: {$protocol}{$ourhostname}/index.php?zone={$cpzone}&redirurl=" . urlencode("http://{$orig_host}/{$orig_request}"));
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ob_flush();
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return;
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}
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if (preg_match("/redirurl=(.*)/", $orig_request, $matches)) {
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$redirurl = urldecode($matches[1]);
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} elseif ($_REQUEST['redirurl']) {
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$redirurl = $_REQUEST['redirurl'];
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} elseif (!empty($cpcfg['redirurl'])) {
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$redirurl = $cpcfg['redirurl'];
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}
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$macfilter = !isset($cpcfg['nomacfilter']);
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/* find MAC address for client */
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if ($macfilter || isset($cpcfg['passthrumacadd'])) {
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$tmpres = pfSense_ip_to_mac($clientip);
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if (!is_array($tmpres)) {
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/* unable to find MAC address - shouldn't happen! - bail out */
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captiveportal_logportalauth("unauthenticated", "noclientmac", $clientip, "ERROR");
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echo "An error occurred. Please check the system logs for more information.";
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log_error("Zone: {$cpzone} - Captive portal could not determine client's MAC address. Disable MAC address filtering in captive portal if you do not need this functionality.");
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ob_flush();
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return;
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}
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$clientmac = $tmpres['macaddr'];
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unset($tmpres);
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}
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if ($_POST['logout_id']) {
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echo <<<EOD
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<html>
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<head><title>Disconnecting...</title></head>
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<body bgcolor="#435370">
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<span style="color: #ffffff; font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif; font-size: 11px;">
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<b>You have been disconnected.</b>
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</span>
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<script type="text/javascript">
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<!--
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setTimeout('window.close();',5000) ;
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-->
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</script>
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</body>
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</html>
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EOD;
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$safe_logout_id = SQLite3::escapeString($_POST['logout_id']);
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captiveportal_disconnect_client($safe_logout_id);
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} elseif (($_POST['accept'] || $cpcfg['auth_method'] === 'radmac' || !empty($cpcfg['blockedmacsurl'])) && $macfilter && $clientmac && captiveportal_blocked_mac($clientmac)) {
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captiveportal_logportalauth($clientmac, $clientmac, $clientip, "Blocked MAC address");
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if (!empty($cpcfg['blockedmacsurl'])) {
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portal_reply_page($cpcfg['blockedmacsurl'], "redir");
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} else {
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if ($cpcfg['auth_method'] === 'radmac') {
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echo gettext("This MAC address has been blocked");
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} else {
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portal_reply_page($redirurl, "error", "This MAC address has been blocked");
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}
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}
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} elseif (portal_consume_passthrough_credit($clientmac)) {
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/* allow the client through if it had a pass-through credit for its MAC */
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captiveportal_logportalauth("unauthenticated", $clientmac, $clientip, "ACCEPT");
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portal_allow($clientip, $clientmac, "unauthenticated");
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} elseif (isset($config['voucher'][$cpzone]['enable']) && $_POST['accept'] && $_POST['auth_voucher']) {
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$voucher = trim($_POST['auth_voucher']);
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$errormsg = gettext("Invalid credentials specified.");
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$timecredit = voucher_auth($voucher);
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// $timecredit contains either a credit in minutes or an error message
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if ($timecredit > 0) { // voucher is valid. Remaining minutes returned
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// if multiple vouchers given, use the first as username
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$a_vouchers = preg_split("/[\t\n\r ]+/s", $voucher);
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$voucher = $a_vouchers[0];
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$attr = array(
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'voucher' => 1,
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'session_timeout' => $timecredit*60,
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'session_terminate_time' => 0);
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if (portal_allow($clientip, $clientmac, $voucher, null, $attr, null, 'voucher', 'voucher')) {
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// YES: user is good for $timecredit minutes.
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captiveportal_logportalauth($voucher, $clientmac, $clientip, "Voucher login good for $timecredit min.");
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} else {
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portal_reply_page($redirurl, "error", $config['voucher'][$cpzone]['descrmsgexpired'] ? $config['voucher'][$cpzone]['descrmsgexpired']: $errormsg);
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}
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} elseif (-1 == $timecredit) { // valid but expired
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captiveportal_logportalauth($voucher, $clientmac, $clientip, "FAILURE", "voucher expired");
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portal_reply_page($redirurl, "error", $config['voucher'][$cpzone]['descrmsgexpired'] ? $config['voucher'][$cpzone]['descrmsgexpired']: $errormsg);
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} else {
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captiveportal_logportalauth($voucher, $clientmac, $clientip, "FAILURE");
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portal_reply_page($redirurl, "error", $config['voucher'][$cpzone]['descrmsgnoaccess'] ? $config['voucher'][$cpzone]['descrmsgnoaccess'] : $errormsg);
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}
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} elseif ($_POST['accept'] || $cpcfg['auth_method'] === 'radmac') {
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if ($cpcfg['auth_method'] === 'radmac' && !isset($_POST['accept'])) {
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$user = $clientmac;
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$passwd = $cpcfg['radmac_secret'];
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$context = 'radmac'; // Radius MAC authentication
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} elseif (!empty(trim($_POST['auth_user2']))) {
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$user = trim($_POST['auth_user2']);
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$passwd = $_POST['auth_pass2'];
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$context = 'second'; // Assume users to use the first context if auth_user2 is empty/does not exist
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} else {
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$user = trim($_POST['auth_user']);
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$passwd = $_POST['auth_pass'];
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$context = 'first';
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}
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$pipeno = captiveportal_get_next_dn_ruleno('auth');
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/* if the pool is empty, return appropriate message and exit */
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if (is_null($pipeno)) {
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$replymsg = gettext("System reached maximum login capacity");
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if ($cpcfg['auth_method'] === 'radmac') {
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echo $replymsg;
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ob_flush();
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return;
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} else {
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portal_reply_page($redirurl, "error", $replymsg);
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}
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log_error("Zone: {$cpzone} - WARNING! Captive portal has reached maximum login capacity");
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}
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$auth_result = captiveportal_authenticate_user($user, $passwd, $clientmac, $clientip, $pipeno, $context);
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if ($auth_result['result']) {
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captiveportal_logportalauth($user, $clientmac, $clientip, $auth_result['login_status']);
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portal_allow($clientip, $clientmac, $user, $passwd, $auth_result['attributes'], $pipeno, $auth_result['auth_method'], $context);
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} else {
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captiveportal_free_dn_ruleno($pipeno);
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$type = "error";
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if (!empty($auth_result['attributes']['url_redirection'])) {
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$redirurl = $auth_result['attributes']['url_redirection'];
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$type = "redir";
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}
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if ($auth_result['login_message']) {
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$replymsg = $auth_result['login_message'];
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} else {
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$replymsg = gettext("Invalid credentials specified.");
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}
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captiveportal_logportalauth($user, $clientmac, $clientip, $auth_result['login_status'], $replymsg);
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/* Radius MAC authentication. */
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if ($context === 'radmac' && $type !== 'redir' && !isset($cpcfg['radmac_fallback'])) {
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echo $replymsg;
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} else {
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portal_reply_page($redirurl, $type, $replymsg);
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}
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}
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} else {
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/* display captive portal page */
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portal_reply_page($redirurl, "login", null, $clientmac, $clientip);
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}
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ob_flush();
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?>
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