. 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. */ ##|+PRIV ##|*IDENT=page-services-captiveportal ##|*NAME=Services: Captive portal page ##|*DESCR=Allow access to the 'Services: Captive portal' page. ##|*MATCH=services_captiveportal.php* ##|-PRIV $pgtitle = array("Services","Captive portal"); require("guiconfig.inc"); if (!is_array($config['captiveportal'])) { $config['captiveportal'] = array(); $config['captiveportal']['page'] = array(); $config['captiveportal']['timeout'] = 60; } if ($_GET['act'] == "viewhtml") { echo base64_decode($config['captiveportal']['page']['htmltext']); exit; } else if ($_GET['act'] == "viewerrhtml") { echo base64_decode($config['captiveportal']['page']['errtext']); exit; } $pconfig['cinterface'] = $config['captiveportal']['interface']; $pconfig['maxproc'] = $config['captiveportal']['maxproc']; $pconfig['maxprocperip'] = $config['captiveportal']['maxprocperip']; $pconfig['timeout'] = $config['captiveportal']['timeout']; $pconfig['idletimeout'] = $config['captiveportal']['idletimeout']; $pconfig['enable'] = isset($config['captiveportal']['enable']); $pconfig['auth_method'] = $config['captiveportal']['auth_method']; $pconfig['radacct_enable'] = isset($config['captiveportal']['radacct_enable']); $pconfig['radmac_enable'] = isset($config['captiveportal']['radmac_enable']); $pconfig['radmac_secret'] = $config['captiveportal']['radmac_secret']; $pconfig['reauthenticate'] = isset($config['captiveportal']['reauthenticate']); $pconfig['reauthenticateacct'] = $config['captiveportal']['reauthenticateacct']; $pconfig['httpslogin_enable'] = isset($config['captiveportal']['httpslogin']); $pconfig['httpsname'] = strtolower($config['captiveportal']['httpsname']); $pconfig['cert'] = base64_decode($config['captiveportal']['certificate']); $pconfig['key'] = base64_decode($config['captiveportal']['private-key']); $pconfig['logoutwin_enable'] = isset($config['captiveportal']['logoutwin_enable']); $pconfig['peruserbw'] = isset($config['captiveportal']['peruserbw']); $pconfig['bwdefaultdn'] = $config['captiveportal']['bwdefaultdn']; $pconfig['bwdefaultup'] = $config['captiveportal']['bwdefaultup']; $pconfig['nomacfilter'] = isset($config['captiveportal']['nomacfilter']); $pconfig['noconcurrentlogins'] = isset($config['captiveportal']['noconcurrentlogins']); $pconfig['redirurl'] = $config['captiveportal']['redirurl']; $pconfig['radiusip'] = $config['captiveportal']['radiusip']; $pconfig['radiusip2'] = $config['captiveportal']['radiusip2']; $pconfig['radiusport'] = $config['captiveportal']['radiusport']; $pconfig['radiusport2'] = $config['captiveportal']['radiusport2']; $pconfig['radiusacctport'] = $config['captiveportal']['radiusacctport']; $pconfig['radiuskey'] = $config['captiveportal']['radiuskey']; $pconfig['radiuskey2'] = $config['captiveportal']['radiuskey2']; $pconfig['radiusvendor'] = $config['captiveportal']['radiusvendor']; //$pconfig['radiussession_timeout'] = isset($config['captiveportal']['radiussession_timeout']); if ($_POST) { unset($input_errors); $pconfig = $_POST; /* input validation */ if ($_POST['enable']) { $reqdfields = explode(" ", "cinterface"); $reqdfieldsn = explode(",", "Interface"); do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors); /* make sure no interfaces are bridged */ foreach ($pconfig['cinterface'] as $cpbrif) if (link_interface_to_bridge($cpbrif)) $input_errors[] = "The captive portal cannot be used on interface {$cpbrif} since it is part of a bridge."; if ($_POST['httpslogin_enable']) { if (!$_POST['cert'] || !$_POST['key']) { $input_errors[] = "Certificate and key must be specified for HTTPS login."; } else { if (!strstr($_POST['cert'], "BEGIN CERTIFICATE") || !strstr($_POST['cert'], "END CERTIFICATE")) $input_errors[] = "This certificate does not appear to be valid."; if (!strstr($_POST['key'], "BEGIN RSA PRIVATE KEY") || !strstr($_POST['key'], "END RSA PRIVATE KEY")) $input_errors[] = "This key does not appear to be valid."; } if (!$_POST['httpsname'] || !is_domain($_POST['httpsname'])) { $input_errors[] = "The HTTPS server name must be specified for HTTPS login."; } } } if ($_POST['timeout'] && (!is_numeric($_POST['timeout']) || ($_POST['timeout'] < 1))) { $input_errors[] = "The timeout must be at least 1 minute."; } if ($_POST['idletimeout'] && (!is_numeric($_POST['idletimeout']) || ($_POST['idletimeout'] < 1))) { $input_errors[] = "The idle timeout must be at least 1 minute."; } if (($_POST['radiusip'] && !is_ipaddr($_POST['radiusip']))) { $input_errors[] = "A valid IP address must be specified. [".$_POST['radiusip']."]"; } if (($_POST['radiusip2'] && !is_ipaddr($_POST['radiusip2']))) { $input_errors[] = "A valid IP address must be specified. [".$_POST['radiusip2']."]"; } if (($_POST['radiusport'] && !is_port($_POST['radiusport']))) { $input_errors[] = "A valid port number must be specified. [".$_POST['radiusport']."]"; } if (($_POST['radiusport2'] && !is_port($_POST['radiusport2']))) { $input_errors[] = "A valid port number must be specified. [".$_POST['radiusport2']."]"; } if (($_POST['radiusacctport'] && !is_port($_POST['radiusacctport']))) { $input_errors[] = "A valid port number must be specified. [".$_POST['radiusacctport']."]"; } if ($_POST['maxproc'] && (!is_numeric($_POST['maxproc']) || ($_POST['maxproc'] < 4) || ($_POST['maxproc'] > 100))) { $input_errors[] = "The total maximum number of concurrent connections must be between 4 and 100."; } $mymaxproc = $_POST['maxproc'] ? $_POST['maxproc'] : 16; if ($_POST['maxprocperip'] && (!is_numeric($_POST['maxprocperip']) || ($_POST['maxprocperip'] > $mymaxproc))) { $input_errors[] = "The maximum number of concurrent connections per client IP address may not be larger than the global maximum."; } if (!$input_errors) { $config['captiveportal']['interface'] = implode(",", $_POST['cinterface']); $config['captiveportal']['maxproc'] = $_POST['maxproc']; $config['captiveportal']['maxprocperip'] = $_POST['maxprocperip'] ? $_POST['maxprocperip'] : false; $config['captiveportal']['timeout'] = $_POST['timeout']; $config['captiveportal']['idletimeout'] = $_POST['idletimeout']; $config['captiveportal']['enable'] = $_POST['enable'] ? true : false; $config['captiveportal']['auth_method'] = $_POST['auth_method']; $config['captiveportal']['radacct_enable'] = $_POST['radacct_enable'] ? true : false; $config['captiveportal']['reauthenticate'] = $_POST['reauthenticate'] ? true : false; $config['captiveportal']['radmac_enable'] = $_POST['radmac_enable'] ? true : false; $config['captiveportal']['radmac_secret'] = $_POST['radmac_secret'] ? $_POST['radmac_secret'] : false; $config['captiveportal']['reauthenticateacct'] = $_POST['reauthenticateacct']; $config['captiveportal']['httpslogin'] = $_POST['httpslogin_enable'] ? true : false; $config['captiveportal']['httpsname'] = $_POST['httpsname']; $config['captiveportal']['peruserbw'] = $_POST['peruserbw'] ? true : false; $config['captiveportal']['bwdefaultdn'] = $_POST['bwdefaultdn']; $config['captiveportal']['bwdefaultup'] = $_POST['bwdefaultup']; $config['captiveportal']['certificate'] = base64_encode($_POST['cert']); $config['captiveportal']['private-key'] = base64_encode($_POST['key']); $config['captiveportal']['logoutwin_enable'] = $_POST['logoutwin_enable'] ? true : false; $config['captiveportal']['nomacfilter'] = $_POST['nomacfilter'] ? true : false; $config['captiveportal']['noconcurrentlogins'] = $_POST['noconcurrentlogins'] ? true : false; $config['captiveportal']['redirurl'] = $_POST['redirurl']; $config['captiveportal']['radiusip'] = $_POST['radiusip']; $config['captiveportal']['radiusip2'] = $_POST['radiusip2']; $config['captiveportal']['radiusport'] = $_POST['radiusport']; $config['captiveportal']['radiusport2'] = $_POST['radiusport2']; $config['captiveportal']['radiusacctport'] = $_POST['radiusacctport']; $config['captiveportal']['radiuskey'] = $_POST['radiuskey']; $config['captiveportal']['radiuskey2'] = $_POST['radiuskey2']; $config['captiveportal']['radiusvendor'] = $_POST['radiusvendor'] ? $_POST['radiusvendor'] : false; //$config['captiveportal']['radiussession_timeout'] = $_POST['radiussession_timeout'] ? true : false; /* file upload? */ if (is_uploaded_file($_FILES['htmlfile']['tmp_name'])) $config['captiveportal']['page']['htmltext'] = base64_encode(file_get_contents($_FILES['htmlfile']['tmp_name'])); if (is_uploaded_file($_FILES['errfile']['tmp_name'])) $config['captiveportal']['page']['errtext'] = base64_encode(file_get_contents($_FILES['errfile']['tmp_name'])); write_config(); $retval = 0; $retval = captiveportal_configure(); $savemsg = get_std_save_message($retval); $pconfig['cinterface'] = implode(",", $_POST['cinterface']); } } include("head.inc"); ?>
  onClick="enable_change(false)"> Enable captive portal
Interface
Choose which interface(s) to run the captive portal on.
Maximum concurrent connections
per client IP address (0 = no limit)
This setting limits the number of concurrent connections to the captive portal HTTP(S) server. This does not set how many users can be logged in to the captive portal, but rather how many users can load the portal page or authenticate at the same time! Default is 4 connections per client IP address, with a total maximum of 16 connections.
Idle timeout minutes
Clients will be disconnected after this amount of inactivity. They may log in again immediately, though. Leave this field blank for no idle timeout.
Hard timeout minutes
Clients will be disconnected after this amount of time, regardless of activity. They may log in again immediately, though. Leave this field blank for no hard timeout (not recommended unless an idle timeout is set).
Logout popup window > Enable logout popup window
If enabled, a popup window will appear when clients are allowed through the captive portal. This allows clients to explicitly disconnect themselves before the idle or hard timeout occurs.
Redirection URL
If you provide a URL here, clients will be redirected to that URL instead of the one they initially tried to access after they've authenticated.
Concurrent user logins > Disable concurrent logins
If this option is set, only the most recent login per username will be active. Subsequent logins will cause machines previously logged in with the same username to be disconnected.
MAC filtering > Disable MAC filtering
If this option is set, no attempts will be made to ensure that the MAC address of clients stays the same while they're logged in. This is required when the MAC address of the client cannot be determined (usually because there are routers between and the clients). If this is enabled, RADIUS MAC authentication cannot be used.
Per-user bandwidth restriction > Enable per-user bandwidth restriction

Default download Kbit/s
Default upload Kbit/s

If this option is set, the captive portal will restrict each user who logs in to the specified default bandwidth. RADIUS can override the default settings. Leave empty or set to 0 for no limit.
Authentication
> No Authentication
> Local User Manager
> RADIUS Authentication
   
Primary RADIUS server
IP address
Enter the IP address of the RADIUS server which users of the captive portal have to authenticate against.
Port
Leave this field blank to use the default port (1812).
Shared secret  
Leave this field blank to not use a RADIUS shared secret (not recommended).
Secondary RADIUS server
IP address
If you have a second RADIUS server, you can activate it by entering its IP address here.
Port
Shared secret  
Accounting
  > send RADIUS accounting packets
If this is enabled, RADIUS accounting packets will be sent to the primary RADIUS server.
Accounting port
Leave blank to use the default port (1813).
Reauthentication
  > Reauthenticate connected users every minute
If reauthentication is enabled, Access-Requests will be sent to the RADIUS server for each user that is logged in every minute. If an Access-Reject is received for a user, that user is disconnected from the captive portal immediately.
Accounting updates > no accounting updates
> stop/start accounting
> interim update
RADIUS MAC authentication
  >Enable RADIUS MAC authentication
If this option is enabled, the captive portal will try to authenticate users by sending their MAC address as the username and the password entered below to the RADIUS server.
Shared secret
RADIUS options
Type
If RADIUS type is set to Cisco, in Access-Requests the value of Calling-Station-Id will be set to the client's IP address and the Called-Station-Id to the client's MAC address. Default behaviour is Calling-Station-Id = client's MAC address and Called-Station-Id = 's WAN IP address.
HTTPS login > Enable HTTPS login
If enabled, the username and password will be transmitted over an HTTPS connection to protect against eavesdroppers. A server name, certificate and matching private key must also be specified below.
HTTPS server name
This name will be used in the form action for the HTTPS POST and should match the Common Name (CN) in your certificate (otherwise, the client browser will most likely display a security warning). Make sure captive portal clients can resolve this name in DNS and verify on the client that the IP resolves to the correct interface IP on .
HTTPS certificate
Paste a signed certificate in X.509 PEM format here.
HTTPS private key
Paste an RSA private key in PEM format here.
Portal page contents
View current page

Upload an HTML file for the portal page here (leave blank to keep the current one). Make sure to include a form (POST to "$PORTAL_ACTION$") with a submit button (name="accept") and a hidden field with name="redirurl" and value="$PORTAL_REDIRURL$". Include the "auth_user" and "auth_pass" and/or "auth_voucher" input fields if authentication is enabled, otherwise it will always fail. Example code for the form:

<form method="post" action="$PORTAL_ACTION$">
   <input name="auth_user" type="text">
   <input name="auth_pass" type="password">
   <input name="auth_voucher" type="text">
   <input name="redirurl" type="hidden" value="$PORTAL_REDIRURL$">
   <input name="accept" type="submit" value="Continue">
</form>
Authentication
error page
contents

View current page

The contents of the HTML file that you upload here are displayed when an authentication error occurs. You may include "$PORTAL_MESSAGE$", which will be replaced by the error or reply messages from the RADIUS server, if any.
 
  Note:
Changing any settings on this page will disconnect all clients! Don't forget to enable the DHCP server on your captive portal interface! Make sure that the default/maximum DHCP lease time is higher than the timeout entered on this page. Also, the DNS forwarder needs to be enabled for DNS lookups by unauthenticated clients to work.