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<?php
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2
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3
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require_once("auth.inc");
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4
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require_once("util.inc");
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5
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require_once("functions.inc");
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6
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require_once("captiveportal.inc");
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7
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8
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header("Expires: 0");
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9
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header("Cache-Control: no-cache, no-store, must-revalidate");
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header("Connection: close");
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11
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global $cpzone, $cpzoneid, $cpzoneprefix;
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13
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$cpzone = strtolower($_REQUEST['zone']);
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$cpcfg = config_get_path("captiveportal/{$cpzone}", []);
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16
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if (empty($cpcfg)) {
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log_error("rfc8910.php - Submission to captiveportal with unknown parameter zone: " . htmlspecialchars($cpzone));
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portal_reply_page($redirurl, "error", gettext("Internal error"));
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ob_flush();
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return;
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}
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$cpzoneid = $cpcfg['zoneid'];
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$clientip = $_SERVER['REMOTE_ADDR'];
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if (is_array($cpcfg['allowedip'])) {
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foreach ($cpcfg['allowedip'] as $ipent) {
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if ($ipent['ip'] == $clientip) {
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if ($ipent['dir'] != 'to') {
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// 'clientip' is part of the 'allowedip' list
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ob_flush();
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return;
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}
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}
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}
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}
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$clientmac = pfSense_ip_to_mac($clientip);
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if (!is_array($clientmac)) {
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if (!isset($cpcfg['nomacfilter']) || isset($cpcfg['passthrumacadd'])) {
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/* unable to find MAC address - shouldn't happen! - bail out */
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captiveportal_logportalauth("unauthenticated", "noclientmac", $clientip, "ERROR");
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echo "An error occurred. Please check the system logs for more information.";
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log_error("Zone: {$cpzone} - Captive portal could not determine client's MAC address. Disable MAC address filtering in captive portal if you do not need this functionality.");
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ob_flush();
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return;
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}
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}
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else if (is_array($cpcfg['passthrumac'])) {
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foreach ($cpcfg['passthrumac'] as $macent) {
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if ($macent['mac'] == $clientmac['macaddr']) {
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if ($macent['action'] == 'pass') {
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// 'clientmac' is part of the 'allowed MAC' list
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ob_flush();
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return;
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}
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}
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}
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}
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/* ---- RFC8910.php Custom Code for Kea DHCP, check MAC address instead of IP to verify a sesson ID exists
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63
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Kea reclaims the IP quickly after the client disconnects, creating IP/MAC conflicts
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64
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when reallocated within the captive portal database of validated clients.
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It is the MAC that it validated, not the IP as IP can change frequently
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This code matches the MAC in the database and assess if it is currently validated by the Portal
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67
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so that The correct True/False string for DCHP 114 is sent.
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*/
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//Check to see if that IP is associated with this device's MAC address in the captive portal database?
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$ARPforIP = shell_exec("arp '$clientip'");
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$clientmac = substr($ARPforIP, 17, 24);
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if (preg_match('/([a-fA-F0-9]{2}[:|\-]?){6}/', "'{$clientmac}'", $matches)) {
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$clientmac = $matches[0];
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}
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/* read in client database and verify IP/MAC matches */
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$query = "WHERE mac = '{$clientmac}'";
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$cpdbmac = captiveportal_read_db($query);
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foreach ($cpdbmac as $cpentrymac) {
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$cpsessionmac = $cpentrymac;
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}
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83
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if (!empty($cpsessionmac)) {
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$sessionidmac = $cpsessionmac['sessionid'];
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}
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87
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88
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/* ------- End Kea customized Code */
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89
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90
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$rfc8910_url = 'https://' . $_SERVER['HTTP_HOST'] . '/index.php?zone=' . $cpzone;
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92
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93
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if (empty($sessionidmac)) {
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/* captiveportal_logportalauth("rfc8910", "EMPTY SESSION", $clientip, $cpzone); */
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95
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/* $seconds_remaining = $cpcfg['timeout'] * 60; */
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96
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$json_post = array (
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"captive" => true,
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"user-portal-url" => "$rfc8910_url",
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"venue-info-url" => "$rfc8910_url"
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);
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101
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echo json_encode($json_post, JSON_PRETTY_PRINT);
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103
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} else {
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105
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/* captiveportal_logportalauth("rfc8910", "EXISTING SESSION", $clientip, $cpzone); */
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/* $seconds_remaining = (time()-$cpsession['allow_time'])+($cpcfg['timeout']*60); */
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$json_post = array (
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"captive" => false,
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"user-portal-url" => "$rfc8910_url",
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"venue-info-url" => "$rfc8910_url"
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);
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echo json_encode($json_post, JSON_PRETTY_PRINT);
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113
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}
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115
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ob_flush();
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116
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117
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return;
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118
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?>
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