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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) 2003-2005 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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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("{$g['varrun_path']}/mini_httpd.cp.pid");
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killbypid("{$g['varrun_path']}/mini_httpd.cps.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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/* 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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$htmltext = <<<EOD
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<html>
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<head>
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<title>pfSense captive portal</title>
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</head>
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<body>
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<h2>pfSense captive portal</h2>
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Welcome to the pfSense Captive Portal! This is the default page since a custom page has not been defined.
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<form method="post" action="$PORTAL_ACTION$">
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<table>
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<tr><td>Username:</td><td><input name="auth_user" type="text"></td></tr>
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<tr><td>Password:</td><td><input name="auth_pass" type="password"></td></tr>
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<tr><td colspan="2">
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<input name="redirurl" type="hidden" value="$PORTAL_REDIRURL$">
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<input name="accept" type="submit" value="Continue">
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</td></tr>
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</table>
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</form>
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<form method="post" action="\$PORTAL_ACTION\$">
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<input name="accept" type="submit" value="Continue">
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<input name="redirurl" type="hidden" value="\$PORTAL_REDIRURL\$">
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</form>
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</body>
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</html>
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EOD;
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}
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$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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/* 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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/* XXX - seems like 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($g['captiveportal_path']);
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$memory = get_memory();
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$avail = $memory[0];
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if($avail > 0 and $avail < 60) {
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$procs = 16;
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} else if($avail > 60 and $avail < 120) {
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$procs = 24;
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} else if($avail > 120 and $avail < 160) {
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$procs = 32;
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} else if($avail > 160 and $avail < 250) {
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$procs = 48;
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} else if($avail > 250 and $avail < 380) {
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$procs = 56;
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} else if($avail > 380 and $avail < 500) {
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$procs = 72;
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} else if($avail > 500 and $avail < 680) {
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$procs = 80;
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} else {
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$procs = 16;
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}
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/* start web server */
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mwexec("/usr/local/sbin/mini_httpd -a -M 0 -u root -maxproc {$procs}" .
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" -p 8000 -i {$g['varrun_path']}/mini_httpd.cp.pid");
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/* fire up another one for HTTPS if requested */
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if (isset($config['captiveportal']['httpslogin']) &&
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$config['captiveportal']['certificate'] && $config['captiveportal']['private-key']) {
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$cert = base64_decode($config['captiveportal']['certificate']);
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$key = base64_decode($config['captiveportal']['private-key']);
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$fd = fopen("{$g['varetc_path']}/cert-portal.pem", "w");
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if (!$fd) {
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printf("Error: cannot open cert-portal.pem in system_webgui_start().\n");
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return 1;
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}
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chmod("{$g['varetc_path']}/cert-portal.pem", 0600);
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fwrite($fd, $cert);
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fwrite($fd, "\n");
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fwrite($fd, $key);
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fclose($fd);
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mwexec("/usr/local/sbin/mini_httpd -S -a -M 0 -E {$g['varetc_path']}/cert-portal.pem" .
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" -u root -maxproc 16 -p 8001" .
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" -i {$g['varrun_path']}/mini_httpd.cps.pid");
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}
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/* start pruning process (interval = 60 seconds) */
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mwexec("/usr/local/bin/minicron 60 {$g['varrun_path']}/minicron.pid " .
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"/etc/rc.prunecaptiveportal");
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/* generate passthru mac database */
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captiveportal_passthrumac_configure();
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/* create allowed ip database and insert ipfw rules to make it so */
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captiveportal_allowedip_configure();
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/* generate radius server database */
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if ($config['captiveportal']['radiusip'] && (!isset($config['captiveportal']['auth_method']) ||
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($config['captiveportal']['auth_method'] == "radius"))) {
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$radiusip = $config['captiveportal']['radiusip'];
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if ($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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$radiuskey = $config['captiveportal']['radiuskey'];
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$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 {
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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']}/mini_httpd.cp.pid");
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killbypid("{$g['varrun_path']}/mini_httpd.cps.pid");
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killbypid("{$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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$cprules = "";
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/* captive portal on LAN interface? */
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if ($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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# 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
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# allow access to our DNS forwarder
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add 1300 set 1 pass udp from any to $cpip 53 in
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add 1301 set 1 pass udp from $cpip 53 to any out
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# allow access to our web server
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add 1302 set 1 pass tcp from any to $cpip 8000 in
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add 1303 set 1 pass tcp from $cpip 8000 to any out
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EOD;
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if (isset($config['captiveportal']['httpslogin'])) {
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$cprules .= <<<EOD
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add 1304 set 1 pass tcp from any to $cpip 8001 in
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add 1305 set 1 pass tcp from $cpip 8001 to any out
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EOD;
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}
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$cprules .= <<<EOD
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# ... 10000-19899: rules per authenticated client go here...
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# redirect non-authenticated clients to captive portal
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add 19900 set 1 fwd 127.0.0.1,8000 tcp from any to any 80 in
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# let the responses from the captive portal web server back out
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add 19901 set 1 pass tcp from any 80 to any out
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# block everything else
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add 19902 set 1 deny all from any to any
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# ... 20000-29899: layer2 block rules per authenticated client go here...
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# pass everything else on layer2
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add 29900 set 1 pass all from any to any layer2
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EOD;
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return $cprules;
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}
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358
|
/* remove clients that have been around for longer than the specified amount of time */
|
|
359
|
/* db file structure: timestamp,ipfw_rule_no,clientip,clientmac,username,sessionid,password */
|
|
360
|
/* (password is in Base64 and only saved when reauthentication is enabled) */
|
|
361
|
function captiveportal_prune_old() {
|
|
362
|
|
|
363
|
global $g, $config;
|
|
364
|
|
|
365
|
/* check for expired entries */
|
|
366
|
if ($config['captiveportal']['timeout'])
|
|
367
|
$timeout = $config['captiveportal']['timeout'] * 60;
|
|
368
|
else
|
|
369
|
$timeout = 0;
|
|
370
|
|
|
371
|
if ($config['captiveportal']['idletimeout'])
|
|
372
|
$idletimeout = $config['captiveportal']['idletimeout'] * 60;
|
|
373
|
else
|
|
374
|
$idletimeout = 0;
|
|
375
|
|
|
376
|
if (!$timeout && !$idletimeout && !isset($config['captiveportal']['reauthenticate']))
|
|
377
|
return;
|
|
378
|
|
|
379
|
captiveportal_lock();
|
|
380
|
|
|
381
|
/* read database */
|
|
382
|
$cpdb = captiveportal_read_db();
|
|
383
|
|
|
384
|
$radiusservers = captiveportal_get_radius_servers();
|
|
385
|
|
|
386
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
387
|
|
|
388
|
$timedout = false;
|
|
389
|
|
|
390
|
/* hard timeout? */
|
|
391
|
if ($timeout) {
|
|
392
|
if ((time() - $cpdb[$i][0]) >= $timeout)
|
|
393
|
$timedout = true;
|
|
394
|
}
|
|
395
|
|
|
396
|
/* if an idle timeout is specified, get last activity timestamp from ipfw */
|
|
397
|
if (!$timedout && $idletimeout) {
|
|
398
|
$lastact = captiveportal_get_last_activity($cpdb[$i][1]);
|
|
399
|
if ($lastact && ((time() - $lastact) >= $idletimeout))
|
|
400
|
$timedout = true;
|
|
401
|
}
|
|
402
|
|
|
403
|
if ($timedout) {
|
|
404
|
captiveportal_disconnect($cpdb[$i], $radiusservers);
|
|
405
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "TIMEOUT");
|
|
406
|
unset($cpdb[$i]);
|
|
407
|
}
|
|
408
|
|
|
409
|
/* do periodic RADIUS reauthentication? */
|
|
410
|
if (!$timedout && isset($config['captiveportal']['reauthenticate']) &&
|
|
411
|
($radiusservers !== false)) {
|
|
412
|
|
|
413
|
if (isset($config['captiveportal']['radacct_enable'])) {
|
|
414
|
if ($config['captiveportal']['reauthenticateacct'] == "stopstart") {
|
|
415
|
/* stop and restart accounting */
|
|
416
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
417
|
$cpdb[$i][4], // username
|
|
418
|
$cpdb[$i][5], // sessionid
|
|
419
|
$cpdb[$i][0], // start time
|
|
420
|
$radiusservers[0]['ipaddr'],
|
|
421
|
$radiusservers[0]['acctport'],
|
|
422
|
$radiusservers[0]['key'],
|
|
423
|
$cpdb[$i][2]); //clientip
|
|
424
|
exec("/sbin/ipfw zero {$cpdb[$i][1]}");
|
|
425
|
RADIUS_ACCOUNTING_START($cpdb[$i][4],
|
|
426
|
$cpdb[$i][5],
|
|
427
|
$radiusservers[0]['ipaddr'],
|
|
428
|
$radiusservers[0]['acctport'],
|
|
429
|
$radiusservers[0]['key'],
|
|
430
|
$cpdb[$i][2]);
|
|
431
|
} else if ($config['captiveportal']['reauthenticateacct'] == "interimupdate") {
|
|
432
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
433
|
$cpdb[$i][4], // username
|
|
434
|
$cpdb[$i][5], // sessionid
|
|
435
|
$cpdb[$i][0], // start time
|
|
436
|
$radiusservers[0]['ipaddr'],
|
|
437
|
$radiusservers[0]['acctport'],
|
|
438
|
$radiusservers[0]['key'],
|
|
439
|
$cpdb[$i][2], //clientip
|
|
440
|
true);
|
|
441
|
}
|
|
442
|
}
|
|
443
|
|
|
444
|
/* check this user against RADIUS again */
|
|
445
|
$auth_val = RADIUS_AUTHENTICATION($cpdb[$i][4],
|
|
446
|
base64_decode($cpdb[$i][6]),
|
|
447
|
$radiusservers[0]['ipaddr'],
|
|
448
|
$radiusservers[0]['port'],
|
|
449
|
$radiusservers[0]['key']);
|
|
450
|
|
|
451
|
if ($auth_val == 3) {
|
|
452
|
captiveportal_disconnect($cpdb[$i], $radiusservers);
|
|
453
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "RADIUS_DISCONNECT");
|
|
454
|
unset($cpdb[$i]);
|
|
455
|
}
|
|
456
|
}
|
|
457
|
}
|
|
458
|
|
|
459
|
/* write database */
|
|
460
|
captiveportal_write_db($cpdb);
|
|
461
|
|
|
462
|
captiveportal_unlock();
|
|
463
|
}
|
|
464
|
|
|
465
|
/* remove a single client according to the DB entry */
|
|
466
|
function captiveportal_disconnect($dbent, $radiusservers) {
|
|
467
|
|
|
468
|
global $g, $config;
|
|
469
|
|
|
470
|
/* this client needs to be deleted - remove ipfw rules */
|
|
471
|
if (isset($config['captiveportal']['radacct_enable']) && isset($radiusservers[0])) {
|
|
472
|
RADIUS_ACCOUNTING_STOP($dbent[1], // ruleno
|
|
473
|
$dbent[4], // username
|
|
474
|
$dbent[5], // sessionid
|
|
475
|
$dbent[0], // start time
|
|
476
|
$radiusservers[0]['ipaddr'],
|
|
477
|
$radiusservers[0]['acctport'],
|
|
478
|
$radiusservers[0]['key'],
|
|
479
|
$dbent[2]); //clientip
|
|
480
|
}
|
|
481
|
|
|
482
|
mwexec("/sbin/ipfw delete " . $dbent[1] . " " . ($dbent[1]+10000));
|
|
483
|
|
|
484
|
//KEYCOM: we need to delete +40500 and +45500 as well...
|
|
485
|
//these are the rule numbers we use to control traffic shaping for each logged in user via captive portal
|
|
486
|
//we only need to remove our rules if peruserbw is turned on.
|
|
487
|
if (isset($config['captiveportal']['peruserbw'])) {
|
|
488
|
mwexec("/sbin/ipfw delete " . ($dbent[1]+40500));
|
|
489
|
mwexec("/sbin/ipfw delete " . ($dbent[1]+45500));
|
|
490
|
}
|
|
491
|
}
|
|
492
|
|
|
493
|
/* remove a single client by ipfw rule number */
|
|
494
|
function captiveportal_disconnect_client($id) {
|
|
495
|
|
|
496
|
global $g, $config;
|
|
497
|
|
|
498
|
captiveportal_lock();
|
|
499
|
|
|
500
|
/* read database */
|
|
501
|
$cpdb = captiveportal_read_db();
|
|
502
|
$radiusservers = captiveportal_get_radius_servers();
|
|
503
|
|
|
504
|
/* find entry */
|
|
505
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
506
|
if ($cpdb[$i][1] == $id) {
|
|
507
|
captiveportal_disconnect($cpdb[$i], $radiusservers);
|
|
508
|
captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "DISCONNECT");
|
|
509
|
unset($cpdb[$i]);
|
|
510
|
break;
|
|
511
|
}
|
|
512
|
}
|
|
513
|
|
|
514
|
/* write database */
|
|
515
|
captiveportal_write_db($cpdb);
|
|
516
|
|
|
517
|
captiveportal_unlock();
|
|
518
|
}
|
|
519
|
|
|
520
|
/* send RADIUS acct stop for all current clients */
|
|
521
|
function captiveportal_radius_stop_all() {
|
|
522
|
global $g, $config;
|
|
523
|
|
|
524
|
captiveportal_lock();
|
|
525
|
$cpdb = captiveportal_read_db();
|
|
526
|
|
|
527
|
$radiusservers = captiveportal_get_radius_servers();
|
|
528
|
|
|
529
|
if (isset($radiusservers[0])) {
|
|
530
|
for ($i = 0; $i < count($cpdb); $i++) {
|
|
531
|
RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno
|
|
532
|
$cpdb[$i][4], // username
|
|
533
|
$cpdb[$i][5], // sessionid
|
|
534
|
$cpdb[$i][0], // start time
|
|
535
|
$radiusservers[0]['ipaddr'],
|
|
536
|
$radiusservers[0]['acctport'],
|
|
537
|
$radiusservers[0]['key'],
|
|
538
|
$cpdb[$i][2]); //clientip
|
|
539
|
}
|
|
540
|
}
|
|
541
|
captiveportal_unlock();
|
|
542
|
}
|
|
543
|
|
|
544
|
function captiveportal_passthrumac_configure() {
|
|
545
|
global $config, $g;
|
|
546
|
|
|
547
|
captiveportal_lock();
|
|
548
|
|
|
549
|
/* clear out passthru macs, if necessary */
|
|
550
|
unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db");
|
|
551
|
|
|
552
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
553
|
|
|
554
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_mac.db", "w");
|
|
555
|
if (!$fd) {
|
|
556
|
printf("Error: cannot open passthru mac DB file in captiveportal_passthrumac_configure().\n");
|
|
557
|
captiveportal_unlock();
|
|
558
|
return 1;
|
|
559
|
}
|
|
560
|
|
|
561
|
foreach ($config['captiveportal']['passthrumac'] as $macent) {
|
|
562
|
/* record passthru mac so it can be recognized and let thru */
|
|
563
|
fwrite($fd, $macent['mac'] . "\n");
|
|
564
|
}
|
|
565
|
|
|
566
|
fclose($fd);
|
|
567
|
}
|
|
568
|
|
|
569
|
/* pass through mac entries should always exist. the reason
|
|
570
|
* for this is because we do not have native mac address filtering
|
|
571
|
* mechanisms. this allows us to filter by mac address easily
|
|
572
|
* and get around this limitation. I consider this a bug in
|
|
573
|
* m0n0wall and pfSense as m0n0wall does not have native mac
|
|
574
|
* filtering mechanisms as well. -Scott Ullrich
|
|
575
|
*/
|
|
576
|
if (is_array($config['captiveportal']['passthrumac'])) {
|
|
577
|
mwexec("/sbin/ipfw delete 50");
|
|
578
|
foreach($config['captiveportal']['passthrumac'] as $ptm) {
|
|
579
|
/* create the pass through mac entry */
|
|
580
|
//system("echo /sbin/ipfw add 50 skipto 65535 ip from any to any MAC {$ptm['mac']} any > /tmp/cp");
|
|
581
|
mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC {$ptm['mac']} any keep-state");
|
|
582
|
mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC any {$ptm['mac']} keep-state");
|
|
583
|
}
|
|
584
|
}
|
|
585
|
|
|
586
|
captiveportal_unlock();
|
|
587
|
|
|
588
|
return 0;
|
|
589
|
}
|
|
590
|
|
|
591
|
function captiveportal_allowedip_configure() {
|
|
592
|
global $config, $g;
|
|
593
|
|
|
594
|
captiveportal_lock();
|
|
595
|
|
|
596
|
/* clear out existing allowed ips, if necessary */
|
|
597
|
if (file_exists("{$g['vardb_path']}/captiveportal_ip.db")) {
|
|
598
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "r");
|
|
599
|
if ($fd) {
|
|
600
|
while (!feof($fd)) {
|
|
601
|
$line = trim(fgets($fd));
|
|
602
|
if ($line) {
|
|
603
|
list($ip,$rule) = explode(",",$line);
|
|
604
|
mwexec("/sbin/ipfw delete $rule");
|
|
605
|
}
|
|
606
|
}
|
|
607
|
}
|
|
608
|
fclose($fd);
|
|
609
|
unlink("{$g['vardb_path']}/captiveportal_ip.db");
|
|
610
|
}
|
|
611
|
|
|
612
|
/* get next ipfw rule number */
|
|
613
|
if (file_exists("{$g['vardb_path']}/captiveportal.nextrule"))
|
|
614
|
$ruleno = trim(file_get_contents("{$g['vardb_path']}/captiveportal.nextrule"));
|
|
615
|
if (!$ruleno)
|
|
616
|
$ruleno = 10000; /* first rule number */
|
|
617
|
|
|
618
|
if (is_array($config['captiveportal']['allowedip'])) {
|
|
619
|
|
|
620
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "w");
|
|
621
|
if (!$fd) {
|
|
622
|
printf("Error: cannot open allowed ip DB file in captiveportal_allowedip_configure().\n");
|
|
623
|
captiveportal_unlock();
|
|
624
|
return 1;
|
|
625
|
}
|
|
626
|
|
|
627
|
foreach ($config['captiveportal']['allowedip'] as $ipent) {
|
|
628
|
|
|
629
|
/* record allowed ip so it can be recognized and removed later */
|
|
630
|
fwrite($fd, $ipent['ip'] . "," . $ruleno ."\n");
|
|
631
|
|
|
632
|
/* insert ipfw rule to allow ip thru */
|
|
633
|
if ($ipent['dir'] == "from") {
|
|
634
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any in");
|
|
635
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " out");
|
|
636
|
} else {
|
|
637
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " in");
|
|
638
|
mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any out");
|
|
639
|
}
|
|
640
|
|
|
641
|
$ruleno++;
|
|
642
|
if ($ruleno > 19899)
|
|
643
|
$ruleno = 10000;
|
|
644
|
}
|
|
645
|
|
|
646
|
fclose($fd);
|
|
647
|
|
|
648
|
/* write next rule number */
|
|
649
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.nextrule", "w");
|
|
650
|
if ($fd) {
|
|
651
|
fwrite($fd, $ruleno);
|
|
652
|
fclose($fd);
|
|
653
|
}
|
|
654
|
}
|
|
655
|
|
|
656
|
captiveportal_unlock();
|
|
657
|
return 0;
|
|
658
|
}
|
|
659
|
|
|
660
|
/* get last activity timestamp given ipfw rule number */
|
|
661
|
function captiveportal_get_last_activity($ruleno) {
|
|
662
|
|
|
663
|
exec("/sbin/ipfw -T list {$ruleno} 2>/dev/null", $ipfwoutput);
|
|
664
|
|
|
665
|
/* in */
|
|
666
|
if ($ipfwoutput[0]) {
|
|
667
|
$ri = explode(" ", $ipfwoutput[0]);
|
|
668
|
if ($ri[1])
|
|
669
|
return $ri[1];
|
|
670
|
}
|
|
671
|
|
|
672
|
return 0;
|
|
673
|
}
|
|
674
|
|
|
675
|
/* read captive portal DB into array */
|
|
676
|
function captiveportal_read_db() {
|
|
677
|
|
|
678
|
global $g;
|
|
679
|
|
|
680
|
$cpdb = array();
|
|
681
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "r");
|
|
682
|
if ($fd) {
|
|
683
|
while (!feof($fd)) {
|
|
684
|
$line = trim(fgets($fd));
|
|
685
|
if ($line) {
|
|
686
|
$cpdb[] = explode(",", $line);
|
|
687
|
}
|
|
688
|
}
|
|
689
|
fclose($fd);
|
|
690
|
}
|
|
691
|
return $cpdb;
|
|
692
|
}
|
|
693
|
|
|
694
|
/* write captive portal DB */
|
|
695
|
function captiveportal_write_db($cpdb) {
|
|
696
|
|
|
697
|
global $g;
|
|
698
|
|
|
699
|
$fd = @fopen("{$g['vardb_path']}/captiveportal.db", "w");
|
|
700
|
if ($fd) {
|
|
701
|
foreach ($cpdb as $cpent) {
|
|
702
|
fwrite($fd, join(",", $cpent) . "\n");
|
|
703
|
}
|
|
704
|
fclose($fd);
|
|
705
|
}
|
|
706
|
}
|
|
707
|
|
|
708
|
/* read RADIUS servers into array */
|
|
709
|
function captiveportal_get_radius_servers() {
|
|
710
|
|
|
711
|
global $g;
|
|
712
|
|
|
713
|
if (file_exists("{$g['vardb_path']}/captiveportal_radius.db")) {
|
|
714
|
$fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db","r");
|
|
715
|
if ($fd) {
|
|
716
|
$radiusservers = array();
|
|
717
|
while (!feof($fd)) {
|
|
718
|
$line = trim(fgets($fd));
|
|
719
|
if ($line) {
|
|
720
|
$radsrv = array();
|
|
721
|
list($radsrv['ipaddr'],$radsrv['port'],$radsrv['acctport'],$radsrv['key']) = explode(",",$line);
|
|
722
|
$radiusservers[] = $radsrv;
|
|
723
|
}
|
|
724
|
}
|
|
725
|
fclose($fd);
|
|
726
|
|
|
727
|
return $radiusservers;
|
|
728
|
}
|
|
729
|
}
|
|
730
|
|
|
731
|
return false;
|
|
732
|
}
|
|
733
|
|
|
734
|
/* lock captive portal information, decide that the lock file is stale after
|
|
735
|
10 seconds */
|
|
736
|
function captiveportal_lock() {
|
|
737
|
|
|
738
|
global $g;
|
|
739
|
|
|
740
|
$lockfile = "{$g['varrun_path']}/captiveportal.lock";
|
|
741
|
|
|
742
|
$n = 0;
|
|
743
|
while ($n < 10) {
|
|
744
|
/* open the lock file in append mode to avoid race condition */
|
|
745
|
if ($fd = @fopen($lockfile, "x")) {
|
|
746
|
/* succeeded */
|
|
747
|
fclose($fd);
|
|
748
|
return;
|
|
749
|
} else {
|
|
750
|
/* file locked, wait and try again */
|
|
751
|
sleep(1);
|
|
752
|
$n++;
|
|
753
|
}
|
|
754
|
}
|
|
755
|
}
|
|
756
|
|
|
757
|
/* unlock configuration file */
|
|
758
|
function captiveportal_unlock() {
|
|
759
|
|
|
760
|
global $g;
|
|
761
|
|
|
762
|
$lockfile = "{$g['varrun_path']}/captiveportal.lock";
|
|
763
|
|
|
764
|
if (file_exists($lockfile))
|
|
765
|
unlink($lockfile);
|
|
766
|
}
|
|
767
|
|
|
768
|
/* log successful captive portal authentication to syslog */
|
|
769
|
/* part of this code from php.net */
|
|
770
|
function captiveportal_logportalauth($user,$mac,$ip,$status) {
|
|
771
|
define_syslog_variables();
|
|
772
|
openlog("logportalauth", LOG_PID, LOG_LOCAL4);
|
|
773
|
// Log it
|
|
774
|
syslog(LOG_INFO, "$status: $user, $mac, $ip");
|
|
775
|
closelog();
|
|
776
|
}
|
|
777
|
|
|
778
|
?>
|