<?php
/*
	status_ovpenvpn.php

    Copyright (C) 2010 Jim Pingle
    Copyright (C) 2008 Shrew Soft Inc.

    AJAX bits borrowed from diag_dump_states.php
    Copyright (C) 2005 Scott Ullrich, Colin Smith

    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.
*/

$pgtitle = "Status: OpenVPN";
require("guiconfig.inc");
require_once("vpn.inc");
include("head.inc");

/* Handle AJAX */
if($_GET['action']) {
	if($_GET['action'] == "kill") {
		$port  = $_GET['port'];
		$remipp  = $_GET['remipp'];
		if (!empty($port) and !empty($remipp)) {
			$retval = kill_client($port, $remipp);
			echo htmlentities("|{$port}|{$remipp}|{$retval}|");
		} else {
			echo "invalid input";
		}
		exit;
	}
}


function kill_client($port, $remipp) {
	$fp = @fsockopen("127.0.0.1", $port, $errval, $errstr, 1);
	$killed = -1;
	if ($fp) {
		fputs($fp, "kill {$remipp}\n");
		while (!feof($fp)) {
			$line = fgets($fp, 1024);
			/* parse header list line */
			if (strpos($line, "INFO:"))
				continue;
			if (strpos($line, "UCCESS")) {
				$killed = 0;
			}
			break;
		}
		fclose($fp);
	}
	return $killed;
}

$servers = array();

$ovpnservers = $config['installedpackages']['openvpnserver']['config'];
if (is_array($ovpnservers)) {
	foreach ($ovpnservers as $settings) {

		$prot = $settings['protocol'];
		$port = $settings['local_port'];

		$server = array();
		$server['port'] = $settings['local_port'];
		if ($settings['description'])
			$server['name'] = "{$settings['description']} {$prot}:{$port}";
		else
			$server['name'] = "Server {$prot}:{$port}";
		$server['conns'] = array();

		$errval;
		$errstr;

		/* open a tcp connection to the management port of each server */
		$fp = @fsockopen("127.0.0.1", $port, $errval, $errstr, 1);
		if ($fp) {

			/* send our status request */
			fputs($fp, "status 2\n");

			/* recv all response lines */
			while (!feof($fp)) {

				/* read the next line */
				$line = fgets($fp, 1024);

				/* parse header list line */
				if (strstr($line, "HEADER"))
					continue;

				/* parse end of output line */
				if (strstr($line, "END"))
					break;

				/* parse client list line */
				if (strstr($line, "CLIENT_LIST")) {
					$list = explode(",", $line);
					$conn = array();
					$conn['common_name'] = $list[1];
					$conn['remote_host'] = $list[2];
					$conn['virtual_addr'] = $list[3];
					$conn['bytes_recv'] = $list[4];
					$conn['bytes_sent'] = $list[5];
					$conn['connect_time'] = $list[6];
					$server['conns'][] = $conn;
				}
			}

			/* cleanup */
			fclose($fp);
		} else {
			$conn = array();
			$conn['common_name'] = "[error]";
			$conn['remote_host'] = "No Management Daemon";
			$conn['virtual_addr'] = "See Note Below";
			$conn['bytes_recv'] = 0;
			$conn['bytes_sent'] = 0;
			$conn['connect_time'] = 0;
			$server['conns'][] = $conn;
		}

		$servers[] = $server;
	}
} ?>

<body link="#0000CC" vlink="#0000CC" alink="#0000CC" onload="<?=$jsevents["body"]["onload"];?>">
<script src="/javascript/sorttable.js" type="text/javascript"></script>
<script src="/javascript/scriptaculous/prototype.js" type="text/javascript"></script>
<script src="/javascript/scriptaculous/scriptaculous.js" type="text/javascript"></script>
<?php include("fbegin.inc"); ?>
<p class="pgtitle"><?php echo $pgtitle; ?></p>
<form action="status_openvpn.php" method="get" name="iform">

<script type="text/javascript">
	function killClient(mport, remipp) {
		var busy = function(icon) {
			icon.onclick      = "";
			icon.src          = icon.src.replace("\.gif", "_d.gif");
			icon.style.cursor = "wait";
		}

		$A(document.getElementsByName("i:" + mport + ":" + remipp)).each(busy);

		new Ajax.Request(
			"<?=$_SERVER['SCRIPT_NAME'];?>" +
				"?action=kill&port=" + mport + "&remipp=" + remipp,
			{ method: "get", onComplete: killComplete }
		);
	}

	function killComplete(req) {
		var values = req.responseText.split("|");
		if(values[3] != "0") {
			alert('<?=gettext("An error occurred.");?>' + ' (' + values[3] + ')');
			return;
		}

		$A(document.getElementsByName("r:" + values[1] + ":" + values[2])).each(
			function(row) { Effect.Fade(row, { duration: 1.0 }); }
		);
	}
</script>


<?php foreach ($servers as $server): ?>

<table style="padding-top:0px; padding-bottom:0px; padding-left:0px; padding-right:0px" width="100%" border="0" cellpadding="0" cellspacing="0">
	<tr>
		<td colspan="6" class="listtopic">
			Client connections for <?=$server['name'];?>
		</td>
	</tr>
	<tr>
		<td>
			<table style="padding-top:0px; padding-bottom:0px; padding-left:0px; padding-right:0px" class="tabcont sortable" width="100%" border="0" cellpadding="0" cellspacing="0">
			<tr>
				<td class="listhdrr">Common Name</td>
				<td class="listhdrr">Real Address</td>
				<td class="listhdrr">Virtual Address</td>
				<td class="listhdrr">Connected Since</td>
				<td class="listhdrr">Bytes Sent</td>
				<td class="listhdrr">Bytes Received</td>
			</tr>

			<?php foreach ($server['conns'] as $conn): ?>
			<tr name='<?php echo "r:{$server['port']}:{$conn['remote_host']}"; ?>'>
				<td class="listlr">
					<?=$conn['common_name'];?>
				</td>
				<td class="listr">
					<?=$conn['remote_host'];?>
				</td>
				<td class="listr">
					<?=$conn['virtual_addr'];?>
				</td>
				<td class="listr">
					<?=$conn['connect_time'];?>
				</td>
				<td class="listr">
					<?=$conn['bytes_sent'];?>
				</td>
				<td class="listr">
					<?=$conn['bytes_recv'];?>
				</td>
				<td class='list'>
					<img src='/themes/<?php echo $g['theme']; ?>/images/icons/icon_x.gif' height='17' width='17' border='0'
					   onclick="killClient('<?php echo $server['port']; ?>', '<?php echo $conn['remote_host']; ?>');" style='cursor:pointer;'
					   name='<?php echo "i:{$server['port']}:{$conn['remote_host']}"; ?>'
					   title='Kill client connection from <?php echo $conn['remote_host']; ?>' alt='' />
				</td>
			</tr>

			<?php endforeach; ?>
			<tr>
				<td colspan="6" class="list" height="12"></td>
			</tr>

		</table>
		</td>
	</tr>
</table>

<?php endforeach; ?>
<br/>
<br/><b>NOTE:</b> You must enable the OpenVPN management interface for each server you want to monitor. You can do this by placing "management 127.0.0.1 &lt;port&gt;;" in the custom options box for the server, where &lt;port&gt; is the port number set for that server.

<?php include("fend.inc"); ?>