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<?php
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/*
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captiveportal.inc
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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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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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This version of captiveportal.inc has been modified by Rob Parker
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<rob.parker@keycom.co.uk> to include changes for per-user bandwidth management
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via returned RADIUS attributes. This page has been modified to delete any
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added rules which may have been created by other per-user code (index.php, etc).
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These changes are (c) 2004 Keycom PLC.
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*/
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/* include all configuration functions */
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require_once("functions.inc");
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require_once("radius_authentication.inc");
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require_once("radius_accounting.inc");
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require_once("radius.inc");
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$lockfile = "{$g['varrun_path']}/captiveportal.lock";
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function captiveportal_configure() {
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global $config, $g;
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if (isset($config['captiveportal']['enable']) &&
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(($config['captiveportal']['interface'] == "lan") ||
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isset($config['interfaces'][$config['captiveportal']['interface']]['enable']))) {
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if ($g['booting'])
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echo "Starting captive portal... ";
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/* kill any running mini_httpd */
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killbypid("{$g['varrun_path']}/lighty-CaptivePortal.pid");
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killbypid("{$g['varrun_path']}/lighty-CaptivePortal-SSL.pid");
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/* kill any running minicron */
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killbypid("{$g['varrun_path']}/minicron.pid");
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/* generate ipfw rules */
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$cprules = captiveportal_rules_generate();
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/* make sure ipfw is loaded */
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mwexec("/sbin/kldload ipfw");
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/* stop accounting on all clients */
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captiveportal_radius_stop_all();
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/* initialize minicron interval value */
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$croninterval = $config['captiveportal']['croninterval'] ? $config['captiveportal']['croninterval'] : 60;
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/* double check if the $croninterval is numeric and at least 10 seconds. If not we set it to 60 to avoid problems */
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if ((!is_numeric($croninterval)) || ($croninterval < 10)) { $croninterval = 60; }
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/* remove old information */
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unlink_if_exists("{$g['vardb_path']}/captiveportal.nextrule");
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unlink_if_exists("{$g['vardb_path']}/captiveportal.db");
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unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db");
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unlink_if_exists("{$g['vardb_path']}/captiveportal_ip.db");
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unlink_if_exists("{$g['vardb_path']}/captiveportal_radius.db");
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/* write portal page */
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if ($config['captiveportal']['page']['htmltext'])
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$htmltext = base64_decode($config['captiveportal']['page']['htmltext']);
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else {
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/* example/template page */
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$htmltext = <<<EOD
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<html>
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<head>
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<title>pfSense captive portal</title>
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</head>
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<body>
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<center>
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<h2>pfSense captive portal</h2>
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Welcome to the pfSense Captive Portal! This is the default page since a custom page has not been defined.
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<p>
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<form method="post" action="\$PORTAL_ACTION\$">
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<input name="redirurl" type="hidden" value="\$PORTAL_REDIRURL\$">
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<table>
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<tr><td>Username:</td><td><input name="auth_user" type="text"></td></tr>
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<tr><td>Password:</td><td><input name="auth_pass" type="password"></td></tr>
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<tr><td> </td></tr>
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<tr>
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<td colspan="2">
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<center><input name="accept" type="submit" value="Continue"></center>
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</td>
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</tr>
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</table>
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</center>
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</form>
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</body>
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</html>
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EOD;
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}
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$fd = @fopen("{$g['varetc_path']}/captiveportal.html", "w");
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if ($fd) {
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fwrite($fd, $htmltext);
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fclose($fd);
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}
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/* write error page */
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if ($config['captiveportal']['page']['errtext'])
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$errtext = base64_decode($config['captiveportal']['page']['errtext']);
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else {
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/* example page */
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$errtext = <<<EOD
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<html>
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<head>
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<title>Authentication error</title>
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</head>
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<body>
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<font color="#cc0000"><h2>Authentication error</h2></font>
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<b>
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Username and/or password invalid.
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<br><br>
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<a href="javascript:history.back()">Go back</a>
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</b>
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</body>
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</html>
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EOD;
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}
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$fd = @fopen("{$g['varetc_path']}/captiveportal-error.html", "w");
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if ($fd) {
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fwrite($fd, $errtext);
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fclose($fd);
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}
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/* write elements */
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captiveportal_write_elements();
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/* load rules */
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mwexec("/sbin/ipfw -f delete set 1");
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mwexec("/sbin/ipfw -f delete set 2");
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mwexec("/sbin/ipfw -f delete set 3");
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/* ipfw cannot accept rules directly on stdin,
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so we have to write them to a temporary file first */
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$fd = @fopen("{$g['tmp_path']}/ipfw.cp.rules", "w");
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if (!$fd) {
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printf("Cannot open ipfw.cp.rules in captiveportal_configure()\n");
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return 1;
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}
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fwrite($fd, $cprules);
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fclose($fd);
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mwexec("/sbin/ipfw {$g['tmp_path']}/ipfw.cp.rules");
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unlink("{$g['tmp_path']}/ipfw.cp.rules");
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/* filter on layer2 as well so we can check MAC addresses */
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mwexec("/sbin/sysctl net.link.ether.ipfw=1");
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chdir($g['captiveportal_path']);
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/* TEMPORARY! FAST_CGI reports _FALSE_ client ip
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* addresses.
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*/
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$use_fastcgi = false;
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if ($config['captiveportal']['maxproc'])
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$maxproc = $config['captiveportal']['maxproc'];
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else
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$maxproc = 16;
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if(isset($config['captiveportal']['httpslogin'])) {
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$cert = base64_decode($config['captiveportal']['certificate']);
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$key = base64_decode($config['captiveportal']['private-key']);
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/* generate lighttpd configuration */
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system_generate_lighty_config("{$g['varetc_path']}/lighty-CaptivePortal-SSL.conf",
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$cert, $key, "lighty-CaptivePortal-ssl.pid", "8001", "/usr/local/captiveportal/",
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"cert-portal.pem", "1", $maxproc, $use_fastcgi, true);
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}
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/* generate lighttpd configuration */
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system_generate_lighty_config("{$g['varetc_path']}/lighty-CaptivePortal.conf",
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"", "", "lighty-CaptivePortal.pid", "8000", "/usr/local/captiveportal/",
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"cert-portal.pem", "1", $maxproc, $use_fastcgi, true);
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/* attempt to start lighttpd */
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$res = mwexec("/usr/local/sbin/lighttpd -f {$g['varetc_path']}/lighty-CaptivePortal.conf");
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/* fire up https instance */
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if(isset($config['captiveportal']['httpslogin']))
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$res = mwexec("/usr/local/sbin/lighttpd -f {$g['varetc_path']}/lighty-CaptivePortal-SSL.conf");
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/* start pruning process (interval defaults to 60 seconds) */
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mwexec("/usr/local/bin/minicron $croninterval {$g['varrun_path']}/minicron.pid " .
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"/etc/rc.prunecaptiveportal");
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/* generate passthru mac database */
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captiveportal_passthrumac_configure();
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/* create allowed ip database and insert ipfw rules to make it so */
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captiveportal_allowedip_configure();
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/* generate radius server database */
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if ($config['captiveportal']['radiusip'] && (!isset($config['captiveportal']['auth_method']) ||
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($config['captiveportal']['auth_method'] == "radius"))) {
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$radiusip = $config['captiveportal']['radiusip'];
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$radiusip2 = ($config['captiveportal']['radiusip2']) ? $config['captiveportal']['radiusip2'] : null;
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if ($config['captiveportal']['radiusport'])
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$radiusport = $config['captiveportal']['radiusport'];
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else
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$radiusport = 1812;
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if ($config['captiveportal']['radiusacctport'])
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$radiusacctport = $config['captiveportal']['radiusacctport'];
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else
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$radiusacctport = 1813;
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if ($config['captiveportal']['radiusport2'])
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$radiusport2 = $config['captiveportal']['radiusport2'];
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else
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$radiusport2 = 1812;
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$radiuskey = $config['captiveportal']['radiuskey'];
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$radiuskey2 = ($config['captiveportal']['radiuskey2']) ? $config['captiveportal']['radiuskey2'] : null;
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$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db", "w");
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if (!$fd) {
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printf("Error: cannot open radius DB file in captiveportal_configure().\n");
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return 1;
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} else if (isset($radiusip2, $radiuskey2)) {
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fwrite($fd,$radiusip . "," . $radiusport . "," . $radiusacctport . "," . $radiuskey . "\n"
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. $radiusip2 . "," . $radiusport2 . "," . $radiusacctport . "," . $radiuskey2);
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} else {
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fwrite($fd,$radiusip . "," . $radiusport . "," . $radiusacctport . "," . $radiuskey);
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}
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fclose($fd);
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}
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if ($g['booting'])
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echo "done\n";
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} else {
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killbypid("{$g['varrun_path']}/lighty-CaptivePortal.pid");
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killbypid("{$g['varrun_path']}/minicron.pid");
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captiveportal_radius_stop_all();
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mwexec("/sbin/sysctl net.link.ether.ipfw=0");
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if (!isset($config['shaper']['enable'])) {
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/* unload ipfw */
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mwexec("/sbin/kldunload ipfw");
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} else {
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/* shaper is on - just remove our rules */
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mwexec("/sbin/ipfw -f delete set 1");
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mwexec("/sbin/ipfw -f delete set 2");
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mwexec("/sbin/ipfw -f delete set 3");
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}
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}
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return 0;
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}
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function captiveportal_rules_generate() {
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global $config, $g;
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$cpifn = $config['captiveportal']['interface'];
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$cpif = $config['interfaces'][$cpifn]['if'];
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$cpip = $config['interfaces'][$cpifn]['ipaddr'];
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/* note: the captive portal daemon inserts all pass rules for authenticated
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clients as skipto 50000 rules to make traffic shaping work */
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$cprules = "";
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/* allow nat redirects to work see
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http://cvstrac.pfsense.com/tktview?tn=651
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*/
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$iflist = array("lan" => "LAN", "wan" => "WAN");
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$captive_portal_interface = strtoupper($cpifn);
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for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++)
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$iflist['opt' . $i] = "OPT{$i}";
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foreach ($iflist as $ifent => $ifname) {
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if($captive_portal_interface == strtoupper($ifname))
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continue;
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$int = convert_friendly_interface_to_real_interface_name($ifname);
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$cprules .= "add 30 set 1 skipto 50000 all from any to any in via {$int} keep-state\n";
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}
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/* captive portal on LAN interface? */
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if ($cpifn == "lan") {
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/* add anti-lockout rules */
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$cprules .= <<<EOD
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add 500 set 1 pass all from $cpip to any out via $cpif
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add 501 set 1 pass all from any to $cpip in via $cpif
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EOD;
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}
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$cprules .= <<<EOD
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# skip to traffic shaper if not on captive portal interface
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add 1000 set 1 skipto 50000 all from any to any not layer2 not via $cpif
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# pass all layer2 traffic on other interfaces
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add 1001 set 1 pass layer2 not via $cpif
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# layer 2: pass ARP
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add 1100 set 1 pass layer2 mac-type arp
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# pfsense requires for WPA
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add 1100 set 1 pass layer2 mac-type 0x888e
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# PPP Over Ethernet Discovery Stage
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add 1100 set 1 pass layer2 mac-type 0x8863
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# PPP Over Ethernet Session Stage
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add 1100 set 1 pass layer2 mac-type 0x8864
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# layer 2: block anything else non-IP
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add 1101 set 1 deny layer2 not mac-type ip
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# layer 2: check if MAC addresses of authenticated clients are correct
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add 1102 set 1 skipto 20000 layer2
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# allow access to our DHCP server (which needs to be able to ping clients as well)
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add 1200 set 1 pass udp from any 68 to 255.255.255.255 67 in
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add 1201 set 1 pass udp from any 68 to $cpip 67 in
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add 1202 set 1 pass udp from $cpip 67 to any 68 out
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add 1203 set 1 pass icmp from $cpip to any out icmptype 8
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add 1204 set 1 pass icmp from any to $cpip in icmptype 0
|
|
349
|
|
|
350
|
# allow access to our DNS forwarder
|
|
351
|
add 1300 set 1 pass udp from any to $cpip 53 in
|
|
352
|
add 1301 set 1 pass udp from $cpip 53 to any out
|
|
353
|
|
|
354
|
# allow access to our web server
|
|
355
|
add 1302 set 1 pass tcp from any to $cpip 8000 in
|
|
356
|
add 1303 set 1 pass tcp from $cpip 8000 to any out
|
|
357
|
|
|
358
|
EOD;
|
|
359
|
|
|
360
|
if (isset($config['captiveportal']['httpslogin'])) {
|
|
361
|
$cprules .= <<<EOD
|
|
362
|
add 1304 set 1 pass tcp from any to $cpip 8001 in
|
|
363
|
add 1305 set 1 pass tcp from $cpip 8001 to any out
|
|
364
|
|
|
365
|
EOD;
|
|
366
|
}
|
|
367
|
|
|
368
|
$cprules .= <<<EOD
|
|
369
|
|
|
370
|
# ... 10000-19899: rules per authenticated client go here...
|
|
371
|
|
|
372
|
# redirect non-authenticated clients to captive portal
|
|
373
|
add 19900 set 1 fwd 127.0.0.1,8000 tcp from any to any 80 in
|
|
374
|
|
|
375
|
# --- for redir ssl
|
|
376
|
# redirect non-authenticated clients to captive portal on ssl
|
|
377
|
add 19901 set 1 fwd 127.0.0.1,8001 tcp from any to any 443 in
|
|
378
|
|
|
379
|
# let the responses from the captive portal web server back out
|
|
380
|
add 19902 set 1 pass tcp from any 443 to any out
|
|
381
|
|
|
382
|
# --- End redir ssl
|
|
383
|
|
|
384
|
# let the responses from the captive portal web server back out
|
|
385
|
add 19903 set 1 pass tcp from any 80 to any out
|
|
386
|
# block everything else
|
|
387
|
add 19904 set 1 deny all from any to any
|
|
388
|
|
|
389
|
# ... 20000-29899: layer2 block rules per authenticated client go here...
|
|
390
|
|
|
391
|
# pass everything else on layer2
|
|
392
|
add 29900 set 1 pass all from any to any layer2
|
|
393
|
|
|
394
|
EOD;
|
|
395
|
|
|
396
|
return $cprules;
|
|
397
|
}
|
|
398
|
|
|
399
|
/* remove clients that have been around for longer than the specified amount of time */
|
|
400
|
/* db file structure:
|
|
401
|
timestamp,ipfw_rule_no,clientip,clientmac,username,sessionid,password,session_timeout,idle_timeout,session_terminate_time */
|
|
402
|
|
|
403
|
/* (password is in Base64 and only saved when reauthentication is enabled) */
|
|
404
|
function captiveportal_prune_old() {
|
|
405
|
|
|
406
|
global $g, $config;
|
|
407
|
|
|
408
|
/* check for expired entries */
|
|
409
|
if ($config['captiveportal']['timeout'])
|
|
410
|
$timeout = $config['captiveportal']['timeout'] * 60;
|
|
411
|
else
|
|
412
|
$timeout = 0;
|
|
413
|
|
|
414
|
if ($config['captiveportal']['idletimeout'])
|
|
415
|
$idletimeout = $config['captiveportal']['idletimeout'] * 60;
|
|
416
|
else
|
|
417
|
$idletimeout = 0;
|
|
418
|
|
|
419
|
if (!$timeout && !$idletimeout && !isset($config['captiveportal']['reauthenticate']))
|
|
420
|
return;
|
|
421
|
|
|
422
|
captiveportal_lock();
|
|
423
|
|
|
424
|
/* read database */
|
|
425
|
$cpdb = captiveportal_read_db();
|
|
426
|
|
|
427
|
$radiusservers = captiveportal_get_radius_servers();
|
|
428
|
|
|
429
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
430
|
|
|
431
|
$timedout = false;
|
|
432
|
$term_cause = 1;
|
|
433
|
|
|
434
|
/* hard timeout? */
|
|
435
|
if ($timeout) {
|
|
436
|
if ((time() - $cpdb[$i][0]) >= $timeout) {
|
|
437
|
$timedout = true;
|
|
438
|
$term_cause = 5; // Session-Timeout
|
|
439
|
}
|
|
440
|
}
|
|
441
|
|
|
442
|
/* Session-Terminate-Time */
|
|
443
|
if (!$timedout && !empty($cpdb[$i][9])) {
|
|
444
|
if (time() >= $cpdb[$i][9]) {
|
|
445
|
$timedout = true;
|
|
446
|
$term_cause = 5; // Session-Timeout
|
|
447
|
}
|
|
448
|
}
|
|
449
|
|
|
450
|
/* check if the radius idle_timeout attribute has been set and if its set change the idletimeout to this value */
|
|
451
|
$idletimeout = (is_numeric($cpdb[$i][8])) ? $cpdb[$i][8] : $idletimeout;
|
|
452
|
/* if an idle timeout is specified, get last activity timestamp from ipfw */
|
|
453
|
if (!$timedout && $idletimeout) {
|
|
454
|
$lastact = captiveportal_get_last_activity($cpdb[$i][1]);
|
|
455
|
if ($lastact && ((time() - $lastact) >= $idletimeout)) {
|
|
456
|
$timedout = true;
|
|
457
|
$term_cause = 4; // Idle-Timeout
|
|
458
|
$stop_time = $lastact; // Entry added to comply with WISPr
|
|
459
|
}
|
|
460
|
}
|
|
461
|
|
|
462
|
/* if radius session_timeout is enabled and the session_timeout is not null, then check if the user should be logged out */
|
|
463
|
if (!$timedout && isset($config['captiveportal']['radiussession_timeout']) && !empty($cpdb[$i][7])) {
|
|
464
|
if (time() >= ($cpdb[$i][0] + $cpdb[$i][7])) {
|
|
465
|
$timedout = true;
|
|
466
|
$term_cause = 5; // Session-Timeout
|
|
467
|
}
|
|
468
|
}
|
|
469
|
|
|
470
|
if ($timedout) {
|
|
471
|
captiveportal_disconnect($cpdb[$i], $radiusservers,$term_cause,$stop_time);
|
|
472
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "TIMEOUT");
|
|
473
|
unset($cpdb[$i]);
|
|
474
|
}
|
|
475
|
|
|
476
|
/* do periodic RADIUS reauthentication? */
|
|
477
|
if (!$timedout && isset($config['captiveportal']['reauthenticate']) &&
|
|
478
|
($radiusservers !== false)) {
|
|
479
|
|
|
480
|
if (isset($config['captiveportal']['radacct_enable'])) {
|
|
481
|
if ($config['captiveportal']['reauthenticateacct'] == "stopstart") {
|
|
482
|
/* stop and restart accounting */
|
|
483
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
484
|
$cpdb[$i][4], // username
|
|
485
|
$cpdb[$i][5], // sessionid
|
|
486
|
$cpdb[$i][0], // start time
|
|
487
|
$radiusservers[0]['ipaddr'],
|
|
488
|
$radiusservers[0]['acctport'],
|
|
489
|
$radiusservers[0]['key'],
|
|
490
|
$cpdb[$i][2], // clientip
|
|
491
|
$cpdb[$i][3], // clientmac
|
|
492
|
10); // NAS Request
|
|
493
|
exec("/sbin/ipfw zero {$cpdb[$i][1]}");
|
|
494
|
RADIUS_ACCOUNTING_START($cpdb[$i][1], // ruleno
|
|
495
|
$cpdb[$i][4], // username
|
|
496
|
$cpdb[$i][5], // sessionid
|
|
497
|
$radiusservers[0]['ipaddr'],
|
|
498
|
$radiusservers[0]['acctport'],
|
|
499
|
$radiusservers[0]['key'],
|
|
500
|
$cpdb[$i][2], // clientip
|
|
501
|
$cpdb[$i][3]); // clientmac
|
|
502
|
} else if ($config['captiveportal']['reauthenticateacct'] == "interimupdate") {
|
|
503
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
504
|
$cpdb[$i][4], // username
|
|
505
|
$cpdb[$i][5], // sessionid
|
|
506
|
$cpdb[$i][0], // start time
|
|
507
|
$radiusservers[0]['ipaddr'],
|
|
508
|
$radiusservers[0]['acctport'],
|
|
509
|
$radiusservers[0]['key'],
|
|
510
|
$cpdb[$i][2], // clientip
|
|
511
|
$cpdb[$i][3], // clientmac
|
|
512
|
10, // NAS Request
|
|
513
|
true); // Interim Updates
|
|
514
|
}
|
|
515
|
}
|
|
516
|
|
|
517
|
/* check this user against RADIUS again */
|
|
518
|
$auth_list = RADIUS_AUTHENTICATION($cpdb[$i][4], // username
|
|
519
|
base64_decode($cpdb[$i][6]), // password
|
|
520
|
$radiusservers,
|
|
521
|
$cpdb[$i][2], // clientip
|
|
522
|
$cpdb[$i][3], // clientmac
|
|
523
|
$cpdb[$i][1]); // ruleno
|
|
524
|
|
|
525
|
if ($auth_list['auth_val'] == 3) {
|
|
526
|
captiveportal_disconnect($cpdb[$i], $radiusservers, 17);
|
|
527
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "RADIUS_DISCONNECT", $auth_list['reply_message']);
|
|
528
|
unset($cpdb[$i]);
|
|
529
|
}
|
|
530
|
}
|
|
531
|
}
|
|
532
|
|
|
533
|
/* write database */
|
|
534
|
captiveportal_write_db($cpdb);
|
|
535
|
|
|
536
|
captiveportal_unlock();
|
|
537
|
}
|
|
538
|
|
|
539
|
/* remove a single client according to the DB entry */
|
|
540
|
function captiveportal_disconnect($dbent, $radiusservers,$term_cause = 1,$stop_time = null) {
|
|
541
|
|
|
542
|
global $g, $config;
|
|
543
|
|
|
544
|
$stop_time = (empty($stop_time)) ? time() : $stop_time;
|
|
545
|
|
|
546
|
/* this client needs to be deleted - remove ipfw rules */
|
|
547
|
if (isset($config['captiveportal']['radacct_enable']) && isset($radiusservers[0])) {
|
|
548
|
RADIUS_ACCOUNTING_STOP($dbent[1], // ruleno
|
|
549
|
$dbent[4], // username
|
|
550
|
$dbent[5], // sessionid
|
|
551
|
$dbent[0], // start time
|
|
552
|
$radiusservers[0]['ipaddr'],
|
|
553
|
$radiusservers[0]['acctport'],
|
|
554
|
$radiusservers[0]['key'],
|
|
555
|
$dbent[2], // clientip
|
|
556
|
$dbent[3], // clientmac
|
|
557
|
$term_cause, // Acct-Terminate-Cause
|
|
558
|
false,
|
|
559
|
$stop_time);
|
|
560
|
}
|
|
561
|
|
|
562
|
mwexec("/sbin/ipfw delete " . $dbent[1] . " " . ($dbent[1]+10000));
|
|
563
|
|
|
564
|
//KEYCOM: we need to delete +40500 and +45500 as well...
|
|
565
|
//these are the rule numbers we use to control traffic shaping for each logged in user via captive portal
|
|
566
|
//we only need to remove our rules if peruserbw is turned on.
|
|
567
|
if (isset($config['captiveportal']['peruserbw'])) {
|
|
568
|
mwexec("/sbin/ipfw delete " . ($dbent[1]+40500));
|
|
569
|
mwexec("/sbin/ipfw delete " . ($dbent[1]+45500));
|
|
570
|
}
|
|
571
|
|
|
572
|
/* ensure all pf states are killed (pfSense) */
|
|
573
|
mwexec("pfctl -k {$dbent[2]}");
|
|
574
|
|
|
575
|
}
|
|
576
|
|
|
577
|
/* remove a single client by ipfw rule number */
|
|
578
|
function captiveportal_disconnect_client($id,$term_cause = 1) {
|
|
579
|
|
|
580
|
global $g, $config;
|
|
581
|
|
|
582
|
captiveportal_lock();
|
|
583
|
|
|
584
|
/* read database */
|
|
585
|
$cpdb = captiveportal_read_db();
|
|
586
|
$radiusservers = captiveportal_get_radius_servers();
|
|
587
|
|
|
588
|
/* find entry */
|
|
589
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
590
|
if ($cpdb[$i][1] == $id) {
|
|
591
|
captiveportal_disconnect($cpdb[$i], $radiusservers, $term_cause);
|
|
592
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "DISCONNECT");
|
|
593
|
unset($cpdb[$i]);
|
|
594
|
break;
|
|
595
|
}
|
|
596
|
}
|
|
597
|
|
|
598
|
/* write database */
|
|
599
|
captiveportal_write_db($cpdb);
|
|
600
|
|
|
601
|
captiveportal_unlock();
|
|
602
|
}
|
|
603
|
|
|
604
|
/* send RADIUS acct stop for all current clients */
|
|
605
|
function captiveportal_radius_stop_all() {
|
|
606
|
global $g, $config;
|
|
607
|
|
|
608
|
if (!isset($config['captiveportal']['radacct_enable']))
|
|
609
|
return;
|
|
610
|
|
|
611
|
captiveportal_lock();
|
|
612
|
$cpdb = captiveportal_read_db();
|
|
613
|
|
|
614
|
$radiusservers = captiveportal_get_radius_servers();
|
|
615
|
|
|
616
|
if (isset($radiusservers[0])) {
|
|
617
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
618
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
619
|
$cpdb[$i][4], // username
|
|
620
|
$cpdb[$i][5], // sessionid
|
|
621
|
$cpdb[$i][0], // start time
|
|
622
|
$radiusservers[0]['ipaddr'],
|
|
623
|
$radiusservers[0]['acctport'],
|
|
624
|
$radiusservers[0]['key'],
|
|
625
|
$cpdb[$i][2], // clientip
|
|
626
|
$cpdb[$i][3], // clientmac
|
|
627
|
7); // Admin Reboot
|
|
628
|
}
|
|
629
|
}
|
|
630
|
captiveportal_unlock();
|
|
631
|
}
|
|
632
|
|
|
633
|
function captiveportal_passthrumac_configure() {
|
|
634
|
global $config, $g;
|
|
635
|
|
|
636
|
captiveportal_lock();
|
|
637
|
|
|
638
|
/* clear out passthru macs, if necessary */
|
|
639
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db");
|
|
640
|
|
|
641
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
642
|
|
|
643
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_mac.db", "w");
|
|
644
|
if (!$fd) {
|
|
645
|
printf("Error: cannot open passthru mac DB file in captiveportal_passthrumac_configure().\n");
|
|
646
|
captiveportal_unlock();
|
|
647
|
return 1;
|
|
648
|
}
|
|
649
|
|
|
650
|
foreach ($config['captiveportal']['passthrumac'] as $macent) {
|
|
651
|
/* record passthru mac so it can be recognized and let thru */
|
|
652
|
fwrite($fd, $macent['mac'] . "\n");
|
|
653
|
}
|
|
654
|
|
|
655
|
fclose($fd);
|
|
656
|
}
|
|
657
|
|
|
658
|
/* pass through mac entries should always exist. the reason
|
|
659
|
* for this is because we do not have native mac address filtering
|
|
660
|
* mechanisms. this allows us to filter by mac address easily
|
|
661
|
* and get around this limitation. I consider this a bug in
|
|
662
|
* m0n0wall and pfSense as m0n0wall does not have native mac
|
|
663
|
* filtering mechanisms as well. -Scott Ullrich
|
|
664
|
*/
|
|
665
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
666
|
mwexec("/sbin/ipfw delete 50");
|
|
667
|
foreach($config['captiveportal']['passthrumac'] as $ptm) {
|
|
668
|
/* create the pass through mac entry */
|
|
669
|
//system("echo /sbin/ipfw add 50 skipto 65535 ip from any to any MAC {$ptm['mac']} any > /tmp/cp");
|
|
670
|
mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC {$ptm['mac']} any keep-state");
|
|
671
|
mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC any {$ptm['mac']} keep-state");
|
|
672
|
}
|
|
673
|
}
|
|
674
|
|
|
675
|
captiveportal_unlock();
|
|
676
|
|
|
677
|
return 0;
|
|
678
|
}
|
|
679
|
|
|
680
|
function captiveportal_allowedip_configure() {
|
|
681
|
global $config, $g;
|
|
682
|
|
|
683
|
captiveportal_lock();
|
|
684
|
|
|
685
|
/* clear out existing allowed ips, if necessary */
|
|
686
|
if (file_exists("{$g['vardb_path']}/captiveportal_ip.db")) {
|
|
687
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "r");
|
|
688
|
if ($fd) {
|
|
689
|
while (!feof($fd)) {
|
|
690
|
$line = trim(fgets($fd));
|
|
691
|
if ($line) {
|
|
692
|
list($ip,$rule) = explode(",",$line);
|
|
693
|
mwexec("/sbin/ipfw delete $rule");
|
|
694
|
}
|
|
695
|
}
|
|
696
|
}
|
|
697
|
fclose($fd);
|
|
698
|
unlink("{$g['vardb_path']}/captiveportal_ip.db");
|
|
699
|
}
|
|
700
|
|
|
701
|
/* get next ipfw rule number */
|
|
702
|
if (file_exists("{$g['vardb_path']}/captiveportal.nextrule"))
|
|
703
|
$ruleno = trim(file_get_contents("{$g['vardb_path']}/captiveportal.nextrule"));
|
|
704
|
if (!$ruleno)
|
|
705
|
$ruleno = 10000; /* first rule number */
|
|
706
|
|
|
707
|
if (is_array($config['captiveportal']['allowedip'])) {
|
|
708
|
|
|
709
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "w");
|
|
710
|
if (!$fd) {
|
|
711
|
printf("Error: cannot open allowed ip DB file in captiveportal_allowedip_configure().\n");
|
|
712
|
captiveportal_unlock();
|
|
713
|
return 1;
|
|
714
|
}
|
|
715
|
|
|
716
|
foreach ($config['captiveportal']['allowedip'] as $ipent) {
|
|
717
|
|
|
718
|
/* record allowed ip so it can be recognized and removed later */
|
|
719
|
fwrite($fd, $ipent['ip'] . "," . $ruleno ."\n");
|
|
720
|
|
|
721
|
/* insert ipfw rule to allow ip thru */
|
|
722
|
if ($ipent['dir'] == "from") {
|
|
723
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any in");
|
|
724
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " out");
|
|
725
|
} else {
|
|
726
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " in");
|
|
727
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any out");
|
|
728
|
}
|
|
729
|
|
|
730
|
$ruleno++;
|
|
731
|
if ($ruleno > 19899)
|
|
732
|
$ruleno = 10000;
|
|
733
|
}
|
|
734
|
|
|
735
|
fclose($fd);
|
|
736
|
|
|
737
|
/* write next rule number */
|
|
738
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.nextrule", "w");
|
|
739
|
if ($fd) {
|
|
740
|
fwrite($fd, $ruleno);
|
|
741
|
fclose($fd);
|
|
742
|
}
|
|
743
|
}
|
|
744
|
|
|
745
|
captiveportal_unlock();
|
|
746
|
return 0;
|
|
747
|
}
|
|
748
|
|
|
749
|
/* get last activity timestamp given ipfw rule number */
|
|
750
|
function captiveportal_get_last_activity($ruleno) {
|
|
751
|
|
|
752
|
$ipfwoutput = "";
|
|
753
|
|
|
754
|
exec("/sbin/ipfw -T list {$ruleno} 2>/dev/null", $ipfwoutput);
|
|
755
|
|
|
756
|
/* in */
|
|
757
|
if ($ipfwoutput[0]) {
|
|
758
|
$ri = explode(" ", $ipfwoutput[0]);
|
|
759
|
if ($ri[1])
|
|
760
|
return $ri[1];
|
|
761
|
}
|
|
762
|
|
|
763
|
return 0;
|
|
764
|
}
|
|
765
|
|
|
766
|
/* read RADIUS servers into array */
|
|
767
|
function captiveportal_get_radius_servers() {
|
|
768
|
|
|
769
|
global $g;
|
|
770
|
|
|
771
|
if (file_exists("{$g['vardb_path']}/captiveportal_radius.db")) {
|
|
772
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db","r");
|
|
773
|
if ($fd) {
|
|
774
|
$radiusservers = array();
|
|
775
|
while (!feof($fd)) {
|
|
776
|
$line = trim(fgets($fd));
|
|
777
|
if ($line) {
|
|
778
|
$radsrv = array();
|
|
779
|
list($radsrv['ipaddr'],$radsrv['port'],$radsrv['acctport'],$radsrv['key']) = explode(",",$line);
|
|
780
|
$radiusservers[] = $radsrv;
|
|
781
|
}
|
|
782
|
}
|
|
783
|
fclose($fd);
|
|
784
|
|
|
785
|
return $radiusservers;
|
|
786
|
}
|
|
787
|
}
|
|
788
|
|
|
789
|
return false;
|
|
790
|
}
|
|
791
|
|
|
792
|
/* lock captive portal information, decide that the lock file is stale after
|
|
793
|
10 seconds */
|
|
794
|
function captiveportal_lock() {
|
|
795
|
|
|
796
|
global $lockfile;
|
|
797
|
|
|
798
|
$n = 0;
|
|
799
|
while ($n < 10) {
|
|
800
|
/* open the lock file in append mode to avoid race condition */
|
|
801
|
if ($fd = @fopen($lockfile, "x")) {
|
|
802
|
/* succeeded */
|
|
803
|
fclose($fd);
|
|
804
|
return;
|
|
805
|
} else {
|
|
806
|
/* file locked, wait and try again */
|
|
807
|
sleep(1);
|
|
808
|
$n++;
|
|
809
|
}
|
|
810
|
}
|
|
811
|
}
|
|
812
|
|
|
813
|
/* unlock captive portal information file */
|
|
814
|
function captiveportal_unlock() {
|
|
815
|
|
|
816
|
global $lockfile;
|
|
817
|
|
|
818
|
if (file_exists($lockfile))
|
|
819
|
unlink($lockfile);
|
|
820
|
}
|
|
821
|
|
|
822
|
/* log successful captive portal authentication to syslog */
|
|
823
|
/* part of this code from php.net */
|
|
824
|
function captiveportal_logportalauth($user,$mac,$ip,$status, $message = null) {
|
|
825
|
define_syslog_variables();
|
|
826
|
$message = trim($message);
|
|
827
|
openlog("logportalauth", LOG_PID, LOG_LOCAL4);
|
|
828
|
// Log it
|
|
829
|
if (!$message)
|
|
830
|
syslog(LOG_INFO, "$status: $user, $mac, $ip");
|
|
831
|
else
|
|
832
|
syslog(LOG_INFO, "$status: $user, $mac, $ip, $message");
|
|
833
|
closelog();
|
|
834
|
}
|
|
835
|
|
|
836
|
function radius($username,$password,$clientip,$clientmac,$type) {
|
|
837
|
global $g, $config;
|
|
838
|
|
|
839
|
$next_ruleno = get_next_ipfw_ruleno();
|
|
840
|
$radiusservers = captiveportal_get_radius_servers();
|
|
841
|
$radacct_enable = isset($config['captiveportal']['radacct_enable']);
|
|
842
|
|
|
843
|
$auth_list = RADIUS_AUTHENTICATION($username,
|
|
844
|
$password,
|
|
845
|
$radiusservers,
|
|
846
|
$clientip,
|
|
847
|
$clientmac,
|
|
848
|
$next_ruleno);
|
|
849
|
|
|
850
|
if ($auth_list['auth_val'] == 2) {
|
|
851
|
captiveportal_logportalauth($username,$clientmac,$clientip,$type);
|
|
852
|
$sessionid = portal_allow($clientip,
|
|
853
|
$clientmac,
|
|
854
|
$username,
|
|
855
|
$password,
|
|
856
|
$auth_list['session_timeout'],
|
|
857
|
$auth_list['idle_timeout'],
|
|
858
|
$auth_list['url_redirection'],
|
|
859
|
$auth_list['session_terminate_time']);
|
|
860
|
|
|
861
|
if ($radacct_enable) {
|
|
862
|
$auth_list['acct_val'] = RADIUS_ACCOUNTING_START($next_ruleno,
|
|
863
|
$username,
|
|
864
|
$sessionid,
|
|
865
|
$radiusservers[0]['ipaddr'],
|
|
866
|
$radiusservers[0]['acctport'],
|
|
867
|
$radiusservers[0]['key'],
|
|
868
|
$clientip,
|
|
869
|
$clientmac);
|
|
870
|
if ($auth_list['acct_val'] == 1)
|
|
871
|
captiveportal_logportalauth($username,$clientmac,$clientip,$type,"RADIUS ACCOUNTING FAILED");
|
|
872
|
}
|
|
873
|
}
|
|
874
|
|
|
875
|
return $auth_list;
|
|
876
|
|
|
877
|
}
|
|
878
|
|
|
879
|
/* read captive portal DB into array */
|
|
880
|
function captiveportal_read_db() {
|
|
881
|
|
|
882
|
global $g;
|
|
883
|
|
|
884
|
$cpdb = array();
|
|
885
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "r");
|
|
886
|
if ($fd) {
|
|
887
|
while (!feof($fd)) {
|
|
888
|
$line = trim(fgets($fd));
|
|
889
|
if ($line) {
|
|
890
|
$cpdb[] = explode(",", $line);
|
|
891
|
}
|
|
892
|
}
|
|
893
|
fclose($fd);
|
|
894
|
}
|
|
895
|
return $cpdb;
|
|
896
|
}
|
|
897
|
|
|
898
|
/* write captive portal DB */
|
|
899
|
function captiveportal_write_db($cpdb) {
|
|
900
|
|
|
901
|
global $g;
|
|
902
|
|
|
903
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "w");
|
|
904
|
if ($fd) {
|
|
905
|
foreach ($cpdb as $cpent) {
|
|
906
|
fwrite($fd, join(",", $cpent) . "\n");
|
|
907
|
}
|
|
908
|
fclose($fd);
|
|
909
|
}
|
|
910
|
}
|
|
911
|
|
|
912
|
function captiveportal_write_elements() {
|
|
913
|
global $g, $config;
|
|
914
|
|
|
915
|
/* delete any existing elements */
|
|
916
|
if (is_dir($g['captiveportal_element_path'])) {
|
|
917
|
$dh = opendir($g['captiveportal_element_path']);
|
|
918
|
while (($file = readdir($dh)) !== false) {
|
|
919
|
if ($file != "." && $file != "..")
|
|
920
|
unlink($g['captiveportal_element_path'] . "/" . $file);
|
|
921
|
}
|
|
922
|
closedir($dh);
|
|
923
|
} else {
|
|
924
|
mkdir($g['captiveportal_element_path']);
|
|
925
|
}
|
|
926
|
|
|
927
|
if (is_array($config['captiveportal']['element'])) {
|
|
928
|
conf_mount_rw();
|
|
929
|
foreach ($config['captiveportal']['element'] as $data) {
|
|
930
|
$fd = @fopen($g['captiveportal_element_path'] . '/' . $data['name'], "wb");
|
|
931
|
if (!$fd) {
|
|
932
|
printf("Error: cannot open '{$data['name']}' in captiveportal_write_elements().\n");
|
|
933
|
return 1;
|
|
934
|
}
|
|
935
|
$decoded = base64_decode($data['content']);
|
|
936
|
fwrite($fd,$decoded);
|
|
937
|
fclose($fd);
|
|
938
|
unlink_if_exists("{$g['captiveportal_path']}/{$data['name']}");
|
|
939
|
unlink_if_exists("{$g['captiveportal_path']}/{$data['name']}");
|
|
940
|
mwexec("cd {$g['captiveportal_path']}/ && ln -s {$g['captiveportal_element_path']}/{$data['name']} {$data['name']}");
|
|
941
|
}
|
|
942
|
conf_mount_ro();
|
|
943
|
}
|
|
944
|
|
|
945
|
return 0;
|
|
946
|
}
|
|
947
|
|
|
948
|
/*
|
|
949
|
* This function will calculate the lowest free firewall ruleno
|
|
950
|
* within the range specified based on the actual installed rules
|
|
951
|
*
|
|
952
|
*/
|
|
953
|
|
|
954
|
function get_next_ipfw_ruleno($rulenos_start = 10000, $rulenos_range_max = 9899) {
|
|
955
|
|
|
956
|
$fwrules = "";
|
|
957
|
$matches = "";
|
|
958
|
exec("/sbin/ipfw show", $fwrules);
|
|
959
|
foreach ($fwrules as $fwrule) {
|
|
960
|
preg_match("/^(\d+)\s+/", $fwrule, $matches);
|
|
961
|
$rulenos_used[] = $matches[1];
|
|
962
|
}
|
|
963
|
$rulenos_used = array_unique($rulenos_used);
|
|
964
|
$rulenos_range = count($rulenos_used);
|
|
965
|
if ($rulenos_range > $rulenos_range_max) {
|
|
966
|
return NULL;
|
|
967
|
}
|
|
968
|
$rulenos_pool = range($rulenos_start, ($rulenos_start + $rulenos_range));
|
|
969
|
$rulenos_free = array_diff($rulenos_pool, $rulenos_used);
|
|
970
|
$ruleno = array_shift($rulenos_free);
|
|
971
|
|
|
972
|
return $ruleno;
|
|
973
|
}
|
|
974
|
|
|
975
|
/*
|
|
976
|
* This function will calculate the lowest free firewall ruleno
|
|
977
|
* within the range specified based on the actual installed rules
|
|
978
|
*
|
|
979
|
*/
|
|
980
|
|
|
981
|
function captiveportal_get_next_ipfw_ruleno($rulenos_start = 10000, $rulenos_range_max = 9899) {
|
|
982
|
|
|
983
|
$fwrules = "";
|
|
984
|
$matches = "";
|
|
985
|
exec("/sbin/ipfw show", $fwrules);
|
|
986
|
foreach ($fwrules as $fwrule) {
|
|
987
|
preg_match("/^(\d+)\s+/", $fwrule, $matches);
|
|
988
|
$rulenos_used[] = $matches[1];
|
|
989
|
}
|
|
990
|
$rulenos_used = array_unique($rulenos_used);
|
|
991
|
$rulenos_range = count($rulenos_used);
|
|
992
|
if ($rulenos_range > $rulenos_range_max) {
|
|
993
|
return NULL;
|
|
994
|
}
|
|
995
|
$rulenos_pool = range($rulenos_start, ($rulenos_start + $rulenos_range));
|
|
996
|
$rulenos_free = array_diff($rulenos_pool, $rulenos_used);
|
|
997
|
$ruleno = array_shift($rulenos_free);
|
|
998
|
|
|
999
|
return $ruleno;
|
|
1000
|
}
|
|
1001
|
|
|
1002
|
/**
|
|
1003
|
* This function will calculate the traffic produced by a client
|
|
1004
|
* based on its firewall rule
|
|
1005
|
*
|
|
1006
|
* Point of view: NAS
|
|
1007
|
*
|
|
1008
|
* Input means: from the client
|
|
1009
|
* Output means: to the client
|
|
1010
|
*
|
|
1011
|
*/
|
|
1012
|
|
|
1013
|
function getVolume($ruleno) {
|
|
1014
|
|
|
1015
|
$volume = array();
|
|
1016
|
|
|
1017
|
// Initialize vars properly, since we don't want NULL vars
|
|
1018
|
$volume['input_pkts'] = $volume['input_bytes'] = $volume['output_pkts'] = $volume['output_bytes'] = 0 ;
|
|
1019
|
|
|
1020
|
// Ingress
|
|
1021
|
$ipfw = "";
|
|
1022
|
$matches = "";
|
|
1023
|
exec("/sbin/ipfw show {$ruleno}", $ipfw);
|
|
1024
|
preg_match("/(\d+)\s+(\d+)\s+(\d+)\s+.*/", $ipfw[0], $matches);
|
|
1025
|
$volume['input_pkts'] = $matches[2];
|
|
1026
|
$volume['input_bytes'] = $matches[3];
|
|
1027
|
|
|
1028
|
// Flush internal buffer
|
|
1029
|
unset($matches);
|
|
1030
|
|
|
1031
|
// Outgress
|
|
1032
|
preg_match("/(\d+)\s+(\d+)\s+(\d+)\s+.*/", $ipfw[1], $matches);
|
|
1033
|
$volume['output_pkts'] = $matches[2];
|
|
1034
|
$volume['output_bytes'] = $matches[3];
|
|
1035
|
|
|
1036
|
return $volume;
|
|
1037
|
}
|
|
1038
|
|
|
1039
|
/**
|
|
1040
|
* Get the NAS-Identifier
|
|
1041
|
*
|
|
1042
|
* We will use our local hostname to make up the nas_id
|
|
1043
|
*/
|
|
1044
|
function getNasID()
|
|
1045
|
{
|
|
1046
|
$nasId = "";
|
|
1047
|
exec("/bin/hostname", $nasId);
|
|
1048
|
if(!$nasId[0])
|
|
1049
|
$nasId[0] = "pfSense";
|
|
1050
|
return $nasId[0];
|
|
1051
|
}
|
|
1052
|
|
|
1053
|
/**
|
|
1054
|
* Get the NAS-IP-Address based on the current wan address
|
|
1055
|
*
|
|
1056
|
* Use functions in interfaces.inc to find this out
|
|
1057
|
*
|
|
1058
|
*/
|
|
1059
|
|
|
1060
|
function getNasIP()
|
|
1061
|
{
|
|
1062
|
$nasIp = get_current_wan_address();
|
|
1063
|
if(!$nasIp)
|
|
1064
|
$nasIp = "0.0.0.0";
|
|
1065
|
return $nasIp;
|
|
1066
|
}
|
|
1067
|
|
|
1068
|
?>
|