. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. This version of captiveportal.inc has been modified by Rob Parker to include changes for per-user bandwidth management via returned RADIUS attributes. This page has been modified to delete any added rules which may have been created by other per-user code (index.php, etc). These changes are (c) 2004 Keycom PLC. */ /* include all configuration functions */ require_once("functions.inc"); require_once("globals.inc"); require_once("radius_authentication.inc"); require_once("radius_accounting.inc"); require_once("radius.inc"); $lockfile = "{$g['varrun_path']}/captiveportal.lock"; function captiveportal_configure() { global $config, $g; if (isset($config['captiveportal']['enable']) && (($config['captiveportal']['interface'] == "lan") || isset($config['interfaces'][$config['captiveportal']['interface']]['enable']))) { if ($g['booting']) echo "Starting captive portal... "; /* kill any running mini_httpd */ killbypid("{$g['varrun_path']}/lighty-CaptivePortal.pid"); killbypid("{$g['varrun_path']}/lighty-CaptivePortal-SSL.pid"); /* kill any running minicron */ killbypid("{$g['varrun_path']}/minicron.pid"); /* generate ipfw rules */ $cprules = captiveportal_rules_generate(); /* make sure ipfw is loaded */ mwexec("/sbin/kldload ipfw"); /* * make sure ipfw is the first hook to make CP work correctly on * Multi-WAN. * Disable the ipfw outer hook it has not value to us. */ mwexec("/sbin/sysctl net.inet.ip.pfil.inbound=\"ipfw,pf\""); /* * TODO: Check if disabling ipfw hook * does not break accounting. */ mwexec("/sbin/sysctl net.inet.ip.pfil.outbound=\"ipfw,pf\""); /* stop accounting on all clients */ captiveportal_radius_stop_all(); /* initialize minicron interval value */ $croninterval = $config['captiveportal']['croninterval'] ? $config['captiveportal']['croninterval'] : 60; /* double check if the $croninterval is numeric and at least 10 seconds. If not we set it to 60 to avoid problems */ if ((!is_numeric($croninterval)) || ($croninterval < 10)) { $croninterval = 60; } /* remove old information */ unlink_if_exists("{$g['vardb_path']}/captiveportal.nextrule"); unlink_if_exists("{$g['vardb_path']}/captiveportal.db"); unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db"); unlink_if_exists("{$g['vardb_path']}/captiveportal_ip.db"); unlink_if_exists("{$g['vardb_path']}/captiveportal_radius.db"); /* write portal page */ if ($config['captiveportal']['page']['htmltext']) $htmltext = base64_decode($config['captiveportal']['page']['htmltext']); else { /* example/template page */ $htmltext = << {$g['product_name']} captive portal

{$g['product_name']} captive portal

Welcome to the {$g['product_name']} Captive Portal! This is the default page since a custom page has not been defined.

Username:
Password:
 
EOD; } $fd = @fopen("{$g['varetc_path']}/captiveportal.html", "w"); if ($fd) { fwrite($fd, $htmltext); fclose($fd); } /* write error page */ if ($config['captiveportal']['page']['errtext']) $errtext = base64_decode($config['captiveportal']['page']['errtext']); else { /* example page */ $errtext = << Authentication error

Authentication error

 Username and/or password invalid.

Go back EOD; } $fd = @fopen("{$g['varetc_path']}/captiveportal-error.html", "w"); if ($fd) { fwrite($fd, $errtext); fclose($fd); } /* write elements */ captiveportal_write_elements(); /* load rules */ mwexec("/sbin/ipfw -f delete set 1"); mwexec("/sbin/ipfw -f delete set 2"); mwexec("/sbin/ipfw -f delete set 3"); /* ipfw cannot accept rules directly on stdin, so we have to write them to a temporary file first */ $fd = @fopen("{$g['tmp_path']}/ipfw.cp.rules", "w"); if (!$fd) { printf("Cannot open ipfw.cp.rules in captiveportal_configure()\n"); return 1; } fwrite($fd, $cprules); fclose($fd); mwexec("/sbin/ipfw {$g['tmp_path']}/ipfw.cp.rules"); unlink("{$g['tmp_path']}/ipfw.cp.rules"); /* filter on layer2 as well so we can check MAC addresses */ mwexec("/sbin/sysctl net.link.ether.ipfw=1"); chdir($g['captiveportal_path']); if ($config['captiveportal']['maxproc']) $maxproc = $config['captiveportal']['maxproc']; else $maxproc = 16; $use_fastcgi = true; if(isset($config['captiveportal']['httpslogin'])) { $cert = base64_decode($config['captiveportal']['certificate']); $key = base64_decode($config['captiveportal']['private-key']); /* generate lighttpd configuration */ system_generate_lighty_config("{$g['varetc_path']}/lighty-CaptivePortal-SSL.conf", $cert, $key, "lighty-CaptivePortal-ssl.pid", "8001", "/usr/local/captiveportal/", "cert-portal.pem", "1", $maxproc, $use_fastcgi, true); } /* generate lighttpd configuration */ system_generate_lighty_config("{$g['varetc_path']}/lighty-CaptivePortal.conf", "", "", "lighty-CaptivePortal.pid", "8000", "/usr/local/captiveportal/", "cert-portal.pem", "1", $maxproc, $use_fastcgi, true); /* attempt to start lighttpd */ $res = mwexec("/usr/local/sbin/lighttpd -f {$g['varetc_path']}/lighty-CaptivePortal.conf"); /* fire up https instance */ if(isset($config['captiveportal']['httpslogin'])) $res = mwexec("/usr/local/sbin/lighttpd -f {$g['varetc_path']}/lighty-CaptivePortal-SSL.conf"); /* start pruning process (interval defaults to 60 seconds) */ mwexec("/usr/local/bin/minicron $croninterval {$g['varrun_path']}/minicron.pid " . "/etc/rc.prunecaptiveportal"); /* generate passthru mac database */ captiveportal_passthrumac_configure(); /* create allowed ip database and insert ipfw rules to make it so */ captiveportal_allowedip_configure(); /* generate radius server database */ if ($config['captiveportal']['radiusip'] && (!isset($config['captiveportal']['auth_method']) || ($config['captiveportal']['auth_method'] == "radius"))) { $radiusip = $config['captiveportal']['radiusip']; $radiusip2 = ($config['captiveportal']['radiusip2']) ? $config['captiveportal']['radiusip2'] : null; if ($config['captiveportal']['radiusport']) $radiusport = $config['captiveportal']['radiusport']; else $radiusport = 1812; if ($config['captiveportal']['radiusacctport']) $radiusacctport = $config['captiveportal']['radiusacctport']; else $radiusacctport = 1813; if ($config['captiveportal']['radiusport2']) $radiusport2 = $config['captiveportal']['radiusport2']; else $radiusport2 = 1812; $radiuskey = $config['captiveportal']['radiuskey']; $radiuskey2 = ($config['captiveportal']['radiuskey2']) ? $config['captiveportal']['radiuskey2'] : null; $fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db", "w"); if (!$fd) { printf("Error: cannot open radius DB file in captiveportal_configure().\n"); return 1; } else if (isset($radiusip2, $radiuskey2)) { fwrite($fd,$radiusip . "," . $radiusport . "," . $radiusacctport . "," . $radiuskey . "\n" . $radiusip2 . "," . $radiusport2 . "," . $radiusacctport . "," . $radiuskey2); } else { fwrite($fd,$radiusip . "," . $radiusport . "," . $radiusacctport . "," . $radiuskey); } fclose($fd); } if ($g['booting']) echo "done\n"; } else { killbypid("{$g['varrun_path']}/lighty-CaptivePortal.pid"); killbypid("{$g['varrun_path']}/minicron.pid"); captiveportal_radius_stop_all(); mwexec("/sbin/sysctl net.link.ether.ipfw=0"); if (!isset($config['shaper']['enable'])) { /* unload ipfw */ $installed_time_based_rules = false; if($config['schedules']) { foreach($config['schedules']['schedule'] as $sched) { $installed_time_based_rules = true; } } if($installed_time_based_rules == false) mwexec("/sbin/kldunload ipfw"); } else { /* shaper is on - just remove our rules */ mwexec("/sbin/ipfw -f delete set 1"); mwexec("/sbin/ipfw -f delete set 2"); mwexec("/sbin/ipfw -f delete set 3"); } } captiveportal_unlock(); return 0; } function captiveportal_rules_generate() { global $config, $g; $cpifn = $config['captiveportal']['interface']; $cpif = $config['interfaces'][$cpifn]['if']; $cpip = $config['interfaces'][$cpifn]['ipaddr']; $lanip = $config['interfaces']['lan']['ipaddr']; /* note: the captive portal daemon inserts all pass rules for authenticated clients as skipto 50000 rules to make traffic shaping work */ $cprules = "add 500 set 1 allow pfsync from any to any\n"; $cprules .= "add 500 set 1 allow carp from any to any\n"; /* allow nat redirects to work see http://cvstrac.pfsense.com/tktview?tn=651 */ $captive_portal_interface = strtoupper($cpifn); /* if list */ $iflist = get_configured_interface_list(); foreach ($iflist as $ifent => $ifname) { if($captive_portal_interface == strtoupper($ifname)) continue; $int = convert_friendly_interface_to_real_interface_name($ifname); $cprules .= "add 30 set 1 skipto 50000 all from any to any in via {$int} keep-state\n"; } /* captive portal on LAN interface? */ if ($cpifn == "lan") { /* add anti-lockout rules */ $cprules .= <<= $timeout) { $timedout = true; $term_cause = 5; // Session-Timeout } } /* Session-Terminate-Time */ if (!$timedout && !empty($cpdb[$i][9])) { if (time() >= $cpdb[$i][9]) { $timedout = true; $term_cause = 5; // Session-Timeout } } /* check if the radius idle_timeout attribute has been set and if its set change the idletimeout to this value */ $idletimeout = (is_numeric($cpdb[$i][8])) ? $cpdb[$i][8] : $idletimeout; /* if an idle timeout is specified, get last activity timestamp from ipfw */ if (!$timedout && $idletimeout) { $lastact = captiveportal_get_last_activity($cpdb[$i][1]); /* if the user has logged on but not sent any trafic they will never be logged out. * We "fix" this by setting lastact to the login timestamp */ $lastact = $lastact ? $lastact : $cpdb[$i][0]; if ($lastact && ((time() - $lastact) >= $idletimeout)) { $timedout = true; $term_cause = 4; // Idle-Timeout $stop_time = $lastact; // Entry added to comply with WISPr } } /* if radius session_timeout is enabled and the session_timeout is not null, then check if the user should be logged out */ if (!$timedout && isset($config['captiveportal']['radiussession_timeout']) && !empty($cpdb[$i][7])) { if (time() >= ($cpdb[$i][0] + $cpdb[$i][7])) { $timedout = true; $term_cause = 5; // Session-Timeout } } if ($timedout) { captiveportal_disconnect($cpdb[$i], $radiusservers,$term_cause,$stop_time); captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "TIMEOUT"); unset($cpdb[$i]); } /* do periodic RADIUS reauthentication? */ if (!$timedout && isset($config['captiveportal']['reauthenticate']) && ($radiusservers !== false)) { if (isset($config['captiveportal']['radacct_enable'])) { if ($config['captiveportal']['reauthenticateacct'] == "stopstart") { /* stop and restart accounting */ RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno $cpdb[$i][4], // username $cpdb[$i][5], // sessionid $cpdb[$i][0], // start time $radiusservers[0]['ipaddr'], $radiusservers[0]['acctport'], $radiusservers[0]['key'], $cpdb[$i][2], // clientip $cpdb[$i][3], // clientmac 10); // NAS Request exec("/sbin/ipfw zero {$cpdb[$i][1]}"); RADIUS_ACCOUNTING_START($cpdb[$i][1], // ruleno $cpdb[$i][4], // username $cpdb[$i][5], // sessionid $radiusservers[0]['ipaddr'], $radiusservers[0]['acctport'], $radiusservers[0]['key'], $cpdb[$i][2], // clientip $cpdb[$i][3]); // clientmac } else if ($config['captiveportal']['reauthenticateacct'] == "interimupdate") { RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno $cpdb[$i][4], // username $cpdb[$i][5], // sessionid $cpdb[$i][0], // start time $radiusservers[0]['ipaddr'], $radiusservers[0]['acctport'], $radiusservers[0]['key'], $cpdb[$i][2], // clientip $cpdb[$i][3], // clientmac 10, // NAS Request true); // Interim Updates } } /* check this user against RADIUS again */ $auth_list = RADIUS_AUTHENTICATION($cpdb[$i][4], // username base64_decode($cpdb[$i][6]), // password $radiusservers, $cpdb[$i][2], // clientip $cpdb[$i][3], // clientmac $cpdb[$i][1]); // ruleno if ($auth_list['auth_val'] == 3) { captiveportal_disconnect($cpdb[$i], $radiusservers, 17); captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "RADIUS_DISCONNECT", $auth_list['reply_message']); unset($cpdb[$i]); } } } /* write database */ captiveportal_write_db($cpdb); captiveportal_unlock(); } /* remove a single client according to the DB entry */ function captiveportal_disconnect($dbent, $radiusservers,$term_cause = 1,$stop_time = null) { global $g, $config; $stop_time = (empty($stop_time)) ? time() : $stop_time; /* this client needs to be deleted - remove ipfw rules */ if (isset($config['captiveportal']['radacct_enable']) && isset($radiusservers[0])) { RADIUS_ACCOUNTING_STOP($dbent[1], // ruleno $dbent[4], // username $dbent[5], // sessionid $dbent[0], // start time $radiusservers[0]['ipaddr'], $radiusservers[0]['acctport'], $radiusservers[0]['key'], $dbent[2], // clientip $dbent[3], // clientmac $term_cause, // Acct-Terminate-Cause false, $stop_time); } mwexec("/sbin/ipfw delete " . $dbent[1] . " " . ($dbent[1]+10000)); /* We need to delete +40500 and +45500 as well... * these are the pipe numbers we use to control traffic shaping for each logged in user via captive portal * We could get an error if the pipe doesn't exist but everything should still be fine */ if (isset($config['captiveportal']['peruserbw'])) { mwexec("/sbin/ipfw pipe " . ($dbent[1]+40500) . " delete"); mwexec("/sbin/ipfw pipe " . ($dbent[1]+45500) . " delete"); } /* pfSense: ensure all pf states are killed (pfSense) */ mwexec("pfctl -k {$dbent[2]}"); mwexec("pfctl -K {$dbent[2]}"); } /* remove a single client by ipfw rule number */ function captiveportal_disconnect_client($id,$term_cause = 1) { global $g, $config; captiveportal_lock(); /* read database */ $cpdb = captiveportal_read_db(); $radiusservers = captiveportal_get_radius_servers(); /* find entry */ for ($i = 0; $i < count($cpdb); $i++) { if ($cpdb[$i][1] == $id) { captiveportal_disconnect($cpdb[$i], $radiusservers, $term_cause); captiveportal_logportalauth($cpdb[$i][4], $cpdb[$i][3], $cpdb[$i][2], "DISCONNECT"); unset($cpdb[$i]); break; } } /* write database */ captiveportal_write_db($cpdb); captiveportal_unlock(); } /* send RADIUS acct stop for all current clients */ function captiveportal_radius_stop_all() { global $g, $config; if (!isset($config['captiveportal']['radacct_enable'])) return; captiveportal_lock(); $cpdb = captiveportal_read_db(); $radiusservers = captiveportal_get_radius_servers(); if (isset($radiusservers[0])) { for ($i = 0; $i < count($cpdb); $i++) { RADIUS_ACCOUNTING_STOP($cpdb[$i][1], // ruleno $cpdb[$i][4], // username $cpdb[$i][5], // sessionid $cpdb[$i][0], // start time $radiusservers[0]['ipaddr'], $radiusservers[0]['acctport'], $radiusservers[0]['key'], $cpdb[$i][2], // clientip $cpdb[$i][3], // clientmac 7); // Admin Reboot } } captiveportal_unlock(); } function captiveportal_passthrumac_configure() { global $config, $g; captiveportal_lock(); /* clear out passthru macs, if necessary */ unlink_if_exists("{$g['vardb_path']}/captiveportal_mac.db"); if (is_array($config['captiveportal']['passthrumac'])) { $fd = @fopen("{$g['vardb_path']}/captiveportal_mac.db", "w"); if (!$fd) { printf("Error: cannot open passthru mac DB file in captiveportal_passthrumac_configure().\n"); captiveportal_unlock(); return 1; } foreach ($config['captiveportal']['passthrumac'] as $macent) { /* record passthru mac so it can be recognized and let thru */ fwrite($fd, $macent['mac'] . "\n"); } fclose($fd); } /* pfSense: * pass through mac entries should always exist. the reason * for this is because we do not have native mac address filtering * mechanisms. this allows us to filter by mac address easily * and get around this limitation. I consider this a bug in * m0n0wall and pfSense as m0n0wall does not have native mac * filtering mechanisms as well. -Scott Ullrich */ if (is_array($config['captiveportal']['passthrumac'])) { mwexec("/sbin/ipfw delete 50"); foreach($config['captiveportal']['passthrumac'] as $ptm) { /* create the pass through mac entry */ //system("echo /sbin/ipfw add 50 skipto 65535 ip from any to any MAC {$ptm['mac']} any > /tmp/cp"); mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC {$ptm['mac']} any keep-state"); mwexec("/sbin/ipfw add 50 skipto 29900 ip from any to any MAC any {$ptm['mac']} keep-state"); } } captiveportal_unlock(); return 0; } function captiveportal_allowedip_configure() { global $config, $g; captiveportal_lock(); /* clear out existing allowed ips, if necessary */ if (file_exists("{$g['vardb_path']}/captiveportal_ip.db")) { $fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "r"); if ($fd) { while (!feof($fd)) { $line = trim(fgets($fd)); if ($line) { list($ip,$rule) = explode(",",$line); mwexec("/sbin/ipfw delete $rule"); } } } fclose($fd); unlink("{$g['vardb_path']}/captiveportal_ip.db"); } /* get next ipfw rule number */ if (file_exists("{$g['vardb_path']}/captiveportal.nextrule")) $ruleno = trim(file_get_contents("{$g['vardb_path']}/captiveportal.nextrule")); if (!$ruleno) $ruleno = 10000; /* first rule number */ if (is_array($config['captiveportal']['allowedip'])) { $fd = @fopen("{$g['vardb_path']}/captiveportal_ip.db", "w"); if (!$fd) { printf("Error: cannot open allowed ip DB file in captiveportal_allowedip_configure().\n"); captiveportal_unlock(); return 1; } foreach ($config['captiveportal']['allowedip'] as $ipent) { /* get next ipfw rule number */ $ruleno = captiveportal_get_next_ipfw_ruleno(); /* if the pool is empty, return apprioriate message and fail */ if (is_null($ruleno)) { printf("Error: system reached maximum login capacity, no free FW rulenos in captiveportal_allowedip_configure().\n"); fclose($fd); captiveportal_unlock(); return 1; } /* record allowed ip so it can be recognized and removed later */ fwrite($fd, $ipent['ip'] . "," . $ruleno ."\n"); /* insert ipfw rule to allow ip thru */ if ($ipent['dir'] == "from") { mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any in"); mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " out"); } else { mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from any to " . $ipent['ip'] . " in"); mwexec("/sbin/ipfw add $ruleno set 2 skipto 50000 ip from " . $ipent['ip'] . " to any out"); } } fclose($fd); } captiveportal_unlock(); return 0; } /* get last activity timestamp given ipfw rule number */ function captiveportal_get_last_activity($ruleno) { $ipfwoutput = ""; exec("/sbin/ipfw -T list {$ruleno} 2>/dev/null", $ipfwoutput); /* in */ if ($ipfwoutput[0]) { $ri = explode(" ", $ipfwoutput[0]); if ($ri[1]) return $ri[1]; } return 0; } /* read RADIUS servers into array */ function captiveportal_get_radius_servers() { global $g; if (file_exists("{$g['vardb_path']}/captiveportal_radius.db")) { $fd = @fopen("{$g['vardb_path']}/captiveportal_radius.db","r"); if ($fd) { $radiusservers = array(); while (!feof($fd)) { $line = trim(fgets($fd)); if ($line) { $radsrv = array(); list($radsrv['ipaddr'],$radsrv['port'],$radsrv['acctport'],$radsrv['key']) = explode(",",$line); $radiusservers[] = $radsrv; } } fclose($fd); return $radiusservers; } } return false; } /* lock captive portal information, decide that the lock file is stale after 10 minutes and EXIT the process to not risk dataloss, issue warning in syslog every 1 minutes */ function captiveportal_lock() { global $lockfile; $n = 1; while ($n) { /* open the lock file in append mode to avoid race condition */ if ($fd = @fopen($lockfile, "x")) { /* succeeded */ fclose($fd); if($n > 10) { captiveportal_syslog("LOCKINFO: Waiting for lock for $n seconds/s!"); } return; } else { /* file locked, wait and try again */ sleep(1); if(($n % 60) == 0) { captiveportal_syslog("LOCKWARNING: waiting for lock for " . $n/60 . " minute/s!"); if(($n % 600) == 0) { captiveportal_syslog("LOCKERROR: waiting for lock for 10 minute/s - EXITING PROCESS!"); die("Can't get a lock"); } } } $n++; } /* we never get here */ } /* unlock captive portal information file */ function captiveportal_unlock() { global $lockfile; if (file_exists($lockfile)) unlink($lockfile); } /* log successful captive portal authentication to syslog */ /* part of this code from php.net */ function captiveportal_logportalauth($user,$mac,$ip,$status, $message = null) { $message = trim($message); // Log it if (!$message) $message = "$status: $user, $mac, $ip"; else $message = "$status: $user, $mac, $ip, $message"; captiveportal_syslog($message); closelog(); } /* log simple messages to syslog */ function captiveportal_syslog($message) { define_syslog_variables(); $message = trim($message); openlog("logportalauth", LOG_PID, LOG_LOCAL4); // Log it syslog(LOG_INFO, $message); closelog(); } function radius($username,$password,$clientip,$clientmac,$type) { global $g, $config; /* Start locking from the beginning of an authentication session */ captiveportal_lock(); $ruleno = captiveportal_get_next_ipfw_ruleno(); /* if the pool is empty, return apprioriate message and fail authentication */ if (is_null($ruleno)) { $auth_list = array(); $auth_list['auth_val'] = 1; $auth_list['error'] = "System reached maximum login capacity"; captiveportal_unlock(); return $auth_list; } $radiusservers = captiveportal_get_radius_servers(); $auth_list = RADIUS_AUTHENTICATION($username, $password, $radiusservers, $clientip, $clientmac, $ruleno); if ($auth_list['auth_val'] == 2) { captiveportal_logportalauth($username,$clientmac,$clientip,$type); $sessionid = portal_allow($clientip, $clientmac, $username, $password, $auth_list, $ruleno); } else { captiveportal_unlock(); } return $auth_list; } /* read captive portal DB into array */ function captiveportal_read_db() { global $g; $cpdb = array(); $fd = @fopen("{$g['vardb_path']}/captiveportal.db", "r"); if ($fd) { while (!feof($fd)) { $line = trim(fgets($fd)); if ($line) { $cpdb[] = explode(",", $line); } } fclose($fd); } return $cpdb; } /* write captive portal DB */ function captiveportal_write_db($cpdb) { global $g; $fd = @fopen("{$g['vardb_path']}/captiveportal.db", "w"); if ($fd) { foreach ($cpdb as $cpent) { fwrite($fd, join(",", $cpent) . "\n"); } fclose($fd); } } function captiveportal_write_elements() { global $g, $config; /* delete any existing elements */ if (is_dir($g['captiveportal_element_path'])) { $dh = opendir($g['captiveportal_element_path']); while (($file = readdir($dh)) !== false) { if ($file != "." && $file != "..") unlink($g['captiveportal_element_path'] . "/" . $file); } closedir($dh); } else { mkdir($g['captiveportal_element_path']); } if (is_array($config['captiveportal']['element'])) { conf_mount_rw(); foreach ($config['captiveportal']['element'] as $data) { $fd = @fopen($g['captiveportal_element_path'] . '/' . $data['name'], "wb"); if (!$fd) { printf("Error: cannot open '{$data['name']}' in captiveportal_write_elements().\n"); return 1; } $decoded = base64_decode($data['content']); fwrite($fd,$decoded); fclose($fd); unlink_if_exists("{$g['captiveportal_path']}/{$data['name']}"); unlink_if_exists("{$g['captiveportal_path']}/{$data['name']}"); mwexec("cd {$g['captiveportal_path']}/ && ln -s {$g['captiveportal_element_path']}/{$data['name']} {$data['name']}"); } conf_mount_ro(); } return 0; } /* * This function will calculate the lowest free firewall ruleno * within the range specified based on the actual installed rules * */ function captiveportal_get_next_ipfw_ruleno($rulenos_start = 10000, $rulenos_range_max = 9899) { $fwrules = ""; $matches = ""; exec("/sbin/ipfw show", $fwrules); foreach ($fwrules as $fwrule) { preg_match("/^(\d+)\s+/", $fwrule, $matches); $rulenos_used[] = $matches[1]; } $rulenos_used = array_unique($rulenos_used); $rulenos_range = count($rulenos_used); if ($rulenos_range > $rulenos_range_max) { return NULL; } $rulenos_pool = range($rulenos_start, ($rulenos_start + $rulenos_range)); $rulenos_free = array_diff($rulenos_pool, $rulenos_used); $ruleno = array_shift($rulenos_free); return $ruleno; } /** * This function will calculate the traffic produced by a client * based on its firewall rule * * Point of view: NAS * * Input means: from the client * Output means: to the client * */ function getVolume($ruleno) { $volume = array(); // Initialize vars properly, since we don't want NULL vars $volume['input_pkts'] = $volume['input_bytes'] = $volume['output_pkts'] = $volume['output_bytes'] = 0 ; // Ingress $ipfw = ""; $matches = ""; exec("/sbin/ipfw show {$ruleno}", $ipfw); preg_match("/(\d+)\s+(\d+)\s+(\d+)\s+.*/", $ipfw[0], $matches); $volume['input_pkts'] = $matches[2]; $volume['input_bytes'] = $matches[3]; // Flush internal buffer unset($matches); // Outgress preg_match("/(\d+)\s+(\d+)\s+(\d+)\s+.*/", $ipfw[1], $matches); $volume['output_pkts'] = $matches[2]; $volume['output_bytes'] = $matches[3]; return $volume; } /** * Get the NAS-Identifier * * We will use our local hostname to make up the nas_id */ function getNasID() { $nasId = ""; exec("/bin/hostname", $nasId); if(!$nasId[0]) $nasId[0] = "{$g['product_name']}"; return $nasId[0]; } /** * Get the NAS-IP-Address based on the current wan address * * Use functions in interfaces.inc to find this out * */ function getNasIP() { $nasIp = get_current_wan_address(); if(!$nasIp) $nasIp = "0.0.0.0"; return $nasIp; } function portal_mac_fixed($clientmac) { global $g ; /* open captive portal mac db */ if (file_exists("{$g['vardb_path']}/captiveportal_mac.db")) { $fd = @fopen("{$g['vardb_path']}/captiveportal_mac.db","r") ; if (!$fd) { return FALSE; } while (!feof($fd)) { $mac = trim(fgets($fd)) ; if(strcasecmp($clientmac, $mac) == 0) { fclose($fd) ; return TRUE ; } } fclose($fd) ; } return FALSE ; } ?>