Redirect pass-through MAC clients.



  • I have enabled pass-through MAC clients and have developed a login page with the username and password inputs on the login form set to hidden, adding two new fields to collect the visitors name and e-mail address. The form writes the detail to an XML file.

    • What I would like to do though is when the visitor returns, they get redirected on their first access.  Can this be done?

    • I would also like to pass the detail collected from the form so it is added to the Description field on the Captive Portal pass-through MAC clients page.

    I am pretty sure that it needs to be done inside this file: /usr/local/captiveportal/index.php

    /*
        $Id$
        part of m0n0wall (http://m0n0.ch/wall)
    
        Copyrigth (C) 2009	    Ermal LuÁi
        Copyright (C) 2003-2006 Manuel Kasper <mk@neon1.net>.
        All rights reserved.
    
        Redistribution and use in source and binary forms, with or without
        modification, are permitted provided that the following conditions are met:
    
        1\. Redistributions of source code must retain the above copyright notice,
           this list of conditions and the following disclaimer.
    
        2\. Redistributions in binary form must reproduce the above copyright
           notice, this list of conditions and the following disclaimer in the
           documentation and/or other materials provided with the distribution.
    
        THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
        INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
        AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
        AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
        OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        POSSIBILITY OF SUCH DAMAGE.
    */
    /*
    	pfSense_MODULE:	captiveportal
    */
    
    require_once("auth.inc");
    require_once("functions.inc");
    require_once("captiveportal.inc");
    require_once("/CaptivePortal/captiveportal-log.inc");
    
    $errormsg = "Invalid credentials specified.";
    
    header("Expires: 0");
    header("Cache-Control: no-store, no-cache, must-revalidate");
    header("Cache-Control: post-check=0, pre-check=0", false);
    header("Pragma: no-cache");
    header("Connection: close");
    
    $orig_host = $_ENV['HTTP_HOST'];
    $orig_request = $_REQUEST['redirurl'];
    $clientip = $_SERVER['REMOTE_ADDR'];
    
    if (!$clientip) {
    	/* not good - bail out */
    	log_error("Captive portal could not determine client's IP address.");
    	$error_message = "An error occurred.  Please check the system logs for more information.";
    	portal_reply_page($redirurl, "error", $errormsg);
    	exit;
    }
    
    if (isset($config['captiveportal']['httpslogin']))
        $ourhostname = $config['captiveportal']['httpsname'] . ":8001";
    else {
        $ifip = portal_ip_from_client_ip($clientip);
        if (!$ifip)
        	$ourhostname = $config['system']['hostname'] . ":8000";
        else
        	$ourhostname = "{$ifip}:8000";
    }
    
    if ($orig_host != $ourhostname) {
        /* the client thinks it's connected to the desired web server, but instead
           it's connected to us. Issue a redirect... */
    
        if (isset($config['captiveportal']['httpslogin']))
            header("Location: https://{$ourhostname}/index.php?redirurl=" . urlencode("http://{$orig_host}{$orig_request}"));
        else
            header("Location: http://{$ourhostname}/index.php?redirurl=" . urlencode("http://{$orig_host}{$orig_request}"));
    
        exit;
    }
    if (!empty($config['captiveportal']['redirurl']))
    	$redirurl = $config['captiveportal']['redirurl'];
    else if (preg_match("/redirurl=(.*)/", $orig_request, $matches))
    	$redirurl = urldecode($matches[1]);
    else if ($_REQUEST['redirurl'])
    	$redirurl = $_REQUEST['redirurl'];
    
    $macfilter = !isset($config['captiveportal']['nomacfilter']);
    $passthrumac = isset($config['captiveportal']['passthrumacadd']);
    
    /* find MAC address for client */
    $clientmac = arp_get_mac_by_ip($clientip);
    if (!$clientmac && ($macfilter || $passthrumac)) {
        /* unable to find MAC address - shouldn't happen! - bail out */
        captiveportal_logportalauth("unauthenticated","noclientmac",$clientip,"ERROR");
        echo "An error occurred.  Please check the system logs for more information.";
        log_error("Captive portal could not determine client's MAC address.  Disable MAC address filtering in captive portal if you do not need this functionality.");
        exit;
    }
    
    /* find out if we need RADIUS + RADIUSMAC or not */
    if (file_exists("{$g['vardb_path']}/captiveportal_radius.db")) {
        $radius_enable = TRUE;
        if (isset($config['captiveportal']['radmac_enable']))
            $radmac_enable = TRUE;
    }
    
    if ($_POST['logout_id']) {
    	echo << <eod<br><title>Disconnecting...</title>
    
     **You have been disconnected.** 
    
    EOD;
    	captiveportal_disconnect_client($_POST['logout_id']);
    	exit;
    } else if ($clientmac && $radmac_enable && portal_mac_radius($clientmac,$clientip)) {
        /* radius functions handle everything so we exit here since we're done */
        exit;
    
    } else if (portal_consume_passthrough_credit($clientmac)) {
        /* allow the client through if it had a pass-through credit for its MAC */
        captiveportal_logportalauth("unauthenticated",$clientmac,$clientip,"ACCEPT");
        portal_allow($clientip, $clientmac, "unauthenticated");
    
    } else if ($_POST['accept'] && $_POST['auth_voucher']) {
    
        $voucher = trim($_POST['auth_voucher']);
        $timecredit = voucher_auth($voucher);
        // $timecredit contains either a credit in minutes or an error message
        if ($timecredit > 0) {  // voucher is valid. Remaining minutes returned
            // if multiple vouchers given, use the first as username
            $a_vouchers = split("[\t\n\r ]+",$voucher);
            $voucher = $a_vouchers[0];
            $attr = array( 'voucher' => 1,
                    'session_timeout' => $timecredit*60,
                    'session_terminate_time' => 0);
            if (portal_allow($clientip, $clientmac,$voucher,null,$attr)) {
    
                // YES: user is good for $timecredit minutes.
                captiveportal_logportalauth($voucher,$clientmac,$clientip,"Voucher login good for $timecredit min.");
            } else {
                portal_reply_page($redirurl, "error", $config['voucher']['msgexpired'] ? $config['voucher']['msgexpired']: $errormsg);
            }
        } else if (-1 == $timecredit) {  // valid but expired
            captiveportal_logportalauth($voucher,$clientmac,$clientip,"FAILURE","voucher expired");
            portal_reply_page($redirurl, "error", $config['voucher']['msgexpired'] ? $config['voucher']['msgexpired']: $errormsg);
        } else {
            captiveportal_logportalauth($voucher,$clientmac,$clientip,"FAILURE");
            portal_reply_page($redirurl, "error", $config['voucher']['msgnoaccess'] ? $config['voucher']['msgnoaccess'] : $errormsg);
        }
    
    } else if ($_POST['accept'] && $radius_enable) {
    
        if ($_POST['auth_user'] && $_POST['auth_pass']) {
            $auth_list = radius($_POST['auth_user'],$_POST['auth_pass'],$clientip,$clientmac,"USER LOGIN");
    	$type = "error";
    	if (!empty($auth_list['url_redirection'])) {
    		$redirurl = $auth_list['url_redirection'];
    		$type = "redir";
    	}
    
            if ($auth_list['auth_val'] == 1) {
                captiveportal_logportalauth($_POST['auth_user'],$clientmac,$clientip,"ERROR",$auth_list['error']);
     	    portal_reply_page($redirurl, $type, $auth_list['error'] ? $auth_list['error'] : $errormsg);
            }
            else if ($auth_list['auth_val'] == 3) {
                captiveportal_logportalauth($_POST['auth_user'],$clientmac,$clientip,"FAILURE",$auth_list['reply_message']);
                portal_reply_page($redirurl, $type, $auth_list['reply_message'] ? $auth_list['reply_message'] : $errormsg);
            }
        } else {
            captiveportal_logportalauth($_POST['auth_user'],$clientmac,$clientip,"ERROR");
            portal_reply_page($redirurl, "error", $errormsg);
        }
    
    } else if ($_POST['accept'] && $config['captiveportal']['auth_method'] == "local" && $_POST['auth_user']) {
    
        if ($_POST['auth_user'] && $_POST['auth_pass']) {
    	//check against local user manager
    	$loginok = local_backed($_POST['auth_user'], $_POST['auth_pass']);
    	if ($loginok){
    		captiveportal_logportalauth($_POST['auth_user'],$clientmac,$clientip,"LOGIN");
    		portal_allow($clientip, $clientmac,$_POST['auth_user']);
    	} else {
    		captiveportal_logportalauth($_POST['auth_user'],$clientmac,$clientip,"FAILURE");
    		portal_reply_page($redirurl, "error", $errormsg);
    	}
        } else
            portal_reply_page($redirurl, "error", $errormsg);
    } else if ($_POST['accept'] && $clientip && $config['captiveportal']['auth_method'] == "none") {
        captiveportal_logportalauth("unauthenticated",$clientmac,$clientip,"ACCEPT");
        portal_allow($clientip, $clientmac, "unauthenticated");
    } else {
        /* display captive portal page */
        portal_reply_page($redirurl, "login",null,$clientmac,$clientip);
    }
    
    exit;
    
    ?></eod<br></mk@neon1.net> 
    ```![Picture 4.png](/public/_imported_attachments_/1/Picture 4.png)
    ![Picture 4.png_thumb](/public/_imported_attachments_/1/Picture 4.png_thumb)
    ![Picture 3.png](/public/_imported_attachments_/1/Picture 3.png)
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    ![Picture 2.png](/public/_imported_attachments_/1/Picture 2.png)
    ![Picture 2.png_thumb](/public/_imported_attachments_/1/Picture 2.png_thumb)


  • What do you mean exactly with "get redirected on their first access" ??
    Do you want people to bypass the login page and go to the first page they have accessed after their first login (looks strange to me, as people wouldn't want to always return to a page that maybe have randomly visited on that specific occasion) or the homepage they set on their browser, or maybe a landing page you have created ??


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