#!/usr/local/bin/php
<?php
/*
	diag_logs_vpn.php
*/
/* ====================================================================
 *  Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.
 *
 *  Some or all of this file is based on the m0n0wall project which is
 *  Copyright (c)  2004 Manuel Kasper (BSD 2 clause)
 *
 *  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.
 *
 *  3. All advertising materials mentioning features or use of this software
 *      must display the following acknowledgment:
 *      "This product includes software developed by the pfSense Project
 *       for use in the pfSense software distribution. (http://www.pfsense.org/).
 *
 *  4. The names "pfSense" and "pfSense Project" must not be used to
 *       endorse or promote products derived from this software without
 *       prior written permission. For written permission, please contact
 *       coreteam@pfsense.org.
 *
 *  5. Products derived from this software may not be called "pfSense"
 *      nor may "pfSense" appear in their names without prior written
 *      permission of the Electric Sheep Fencing, LLC.
 *
 *  6. Redistributions of any form whatsoever must retain the following
 *      acknowledgment:
 *
 *  "This product includes software developed by the pfSense Project
 *  for use in the pfSense software distribution (http://www.pfsense.org/).
 *
 *  THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
 *  EXPRESSED 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 pfSense PROJECT OR
 *  ITS CONTRIBUTORS 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.
 *
 *  ====================================================================
 *
 */

/*
	pfSense_BUILDER_BINARIES:	/usr/sbin/fifolog_reader	/usr/local/sbin/clog
	pfSense_MODULE: vpn
*/

##|+PRIV
##|*IDENT=page-diagnostics-logs-pptpvpn
##|*NAME=Diagnostics: Logs: VPN page
##|*DESCR=Allow access to the 'Diagnostics: Logs: VPN' page.
##|*MATCH=diag_logs_vpn.php*
##|-PRIV


$vpns = array('poes' => 'PPPoE', 'l2tp' => 'L2TP');

$pgtitle = array(gettext("Status"), gettext("System logs"), gettext("VPN"));
require("guiconfig.inc");
require_once("vpn.inc");

$nentries = $config['syslog']['nentries'];
if (!$nentries) {
	$nentries = 50;
}

if (htmlspecialchars($_POST['vpntype'])) {
	$vpntype = htmlspecialchars($_POST['vpntype']);
} elseif (htmlspecialchars($_GET['vpntype'])) {
	$vpntype = htmlspecialchars($_GET['vpntype']);
} else {
	$vpntype = "poes";
}
if (htmlspecialchars($_POST['mode'])) {
	$mode = htmlspecialchars($_POST['mode']);
} elseif (htmlspecialchars($_GET['mode'])) {
	$mode = htmlspecialchars($_GET['mode']);
} else {
	$mode = "login";
}
switch ($vpntype) {
	case 'poes':
		$logname = "poes";
		break;
	case 'l2tp':
		$logname = "l2tps";
		break;
}

if ($_POST['clear']) {
	if ($mode != "raw") {
		clear_log_file("/var/log/vpn.log");
	} else {
		clear_log_file("/var/log/{$logname}.log");
	}
}

function dump_clog_vpn($logfile, $tail) {
	global $g, $config, $vpntype;

	$sor = isset($config['syslog']['reverse']) ? "-r" : "";

	$logarr = "";

	if (isset($config['system']['usefifolog'])) {
		exec("/usr/sbin/fifolog_reader " . escapeshellarg($logfile) . " | tail {$sor} -n " . $tail, $logarr);
	} else {
		exec("/usr/local/sbin/clog " . escapeshellarg($logfile) . " | tail {$sor} -n " . $tail, $logarr);
	}

	$rows = 0;
	foreach ($logarr as $logent) {
		$logent = preg_split("/\s+/", $logent, 6);
		$llent = explode(",", $logent[5]);
		$iftype = substr($llent[1], 0, 4);
		if ($iftype != $vpntype) {
			continue;
		}
		echo "<tr>\n";
		echo "<td>" . htmlspecialchars(join(" ", array_slice($logent, 0, 3))) . "</td>\n";

		if ($llent[0] == "login") {
			echo "<td><i class=\"fa fa-arrow-left\" alt=\"in\"></i></td>\n";
		} else {
			echo "<td><i class=\"fa fa-arrow-right\" alt=\"out\"></i></td>\n";
		}

		echo "<td>" . htmlspecialchars($llent[3]) . "</td>\n";
		echo "<td>" . htmlspecialchars($llent[2]) . "&nbsp;</td>\n";
		echo "</tr>\n";
	}
	return($rows);
}

include("head.inc");

$tab_array = array();
$tab_array[] = array(gettext("System"), false, "diag_logs.php");
$tab_array[] = array(gettext("Firewall"), false, "diag_logs_filter.php");
$tab_array[] = array(gettext("DHCP"), false, "diag_logs.php?logfile=dhcpd");
$tab_array[] = array(gettext("Portal Auth"), false, "diag_logs.php?logfile=portalauth");
$tab_array[] = array(gettext("IPsec"), false, "diag_logs.php?logfile=ipsec");
$tab_array[] = array(gettext("PPP"), false, "diag_logs.php?logfile=ppp");
$tab_array[] = array(gettext("VPN"), true, "diag_logs_vpn.php");
$tab_array[] = array(gettext("Load Balancer"), false, "diag_logs.php?logfile=relayd");
$tab_array[] = array(gettext("OpenVPN"), false, "diag_logs.php?logfile=openvpn");
$tab_array[] = array(gettext("NTP"), false, "diag_logs.php?logfile=ntpd");
$tab_array[] = array(gettext("Settings"), false, "diag_logs_settings.php");
display_top_tabs($tab_array);

$tab_array = array();
$tab_array[] = array(gettext("PPPoE Logins"),
			(($vpntype == "poes") && ($mode != "raw")),
			"/diag_logs_vpn.php?vpntype=poes");
$tab_array[] = array(gettext("PPPoE Raw"),
			(($vpntype == "poes") && ($mode == "raw")),
			"/diag_logs_vpn.php?vpntype=poes&amp;mode=raw");
$tab_array[] = array(gettext("L2TP Logins"),
			(($vpntype == "l2tp") && ($mode != "raw")),
			"/diag_logs_vpn.php?vpntype=l2tp");
$tab_array[] = array(gettext("L2TP Raw"),
			(($vpntype == "l2tp") && ($mode == "raw")),
			"/diag_logs_vpn.php?vpntype=l2tp&amp;mode=raw");
display_top_tabs($tab_array, false, 'nav nav-tabs');
?>

<!-- Raw logs are displayed as preformatted text. vpn logs are displayed as a table-->
<div class="panel panel-default">
	<div class="panel-heading"><h2 class="panel-title"><?=gettext("Last ")?><?=$nentries?> <?=$vpns[$vpntype]?><?=gettext(" log entries")?></h2></div>
	<div class="panel-body">
<?php
		if ($mode != "raw") {
?>
		<div class="table-responsive">
			<table class="table table-striped table-hover table-condensed">
				<thead>
					<tr>
						<th><?=gettext("Time")?></th>
						<th><?=gettext("Action")?></th>
						<th><?=gettext("User")?></th>
						<th><?=gettext("IP address")?></th>
					</tr>
				</thead>
				<tbody>
<?php
					$rows = dump_clog_vpn("/var/log/vpn.log", $nentries);	// dump_clog_vpn provides all the need <td></td>/<tr></tr> tags
?>
					</tbody>
				</table>
<?php
			if ($rows == 0)
				print_info_box('No logs to display');
?>
		</div>
<?php
		}
		else {
?>
		<pre>
<?php
		if (dump_clog_no_table("/var/log/{$logname}.log", $nentries) == 0)
			print('No logs to display');
?>
		</pre>
<?php
		}
?>
		<p>
			<form action="diag_logs_vpn.php" method="post">
				<input type="hidden" name="vpntype" id="vpntype" value="<?=$vpntype?>" />
				<input type="hidden" name="mode" id="mode" value="<?=$mode?>" />
				<input name="clear" type="submit" class="btn btn-danger" value="<?=gettext("Clear log")?>" />
			</form>
		</p>
	</div>
</div>
<?php include("foot.inc");