<?php
/* $Id$ */
/*
 firewall_aliases_edit.php
 Copyright (C) 2004 Scott Ullrich
 All rights reserved.

 originially part of m0n0wall (http://m0n0.ch/wall)
 Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
 All rights reserved.

 modified for the pfsense snort package
 Copyright (C) 2009-2010 Robert Zelaya.
 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.
 */

require_once("guiconfig.inc");
require_once("/usr/local/pkg/snort/snort.inc");

if (!is_array($config['installedpackages']['snortglobal']['suppress']))
	$config['installedpackages']['snortglobal']['suppress'] = array();
if (!is_array($config['installedpackages']['snortglobal']['suppress']['item']))
	$config['installedpackages']['snortglobal']['suppress']['item'] = array();
$a_suppress = &$config['installedpackages']['snortglobal']['suppress']['item'];

$id = $_GET['id'];
if (isset($_POST['id']))
	$id = $_POST['id'];
if (!is_numeric($id))
	$id = 0; // XXX: safety belt


/* gen uuid for each iface */
if (is_array($config['installedpackages']['snortglobal']['suppress']['item'][$id])) {
	if ($config['installedpackages']['snortglobal']['suppress']['item'][$id]['uuid'] == '') {
		//$snort_uuid = gen_snort_uuid(strrev(uniqid(true)));
		$suppress_uuid = 0;
		while ($suppress_uuid > 65535 || $suppress_uuid == 0) {
			$suppress_uuid = mt_rand(1, 65535);
			$pconfig['uuid'] = $suppress_uuid;
		}
	} else if ($config['installedpackages']['snortglobal']['suppress']['item'][$id]['uuid'] != '') {
		$suppress_uuid = $config['installedpackages']['snortglobal']['suppress']['item'][$id]['uuid'];
	}
}

/* returns true if $name is a valid name for a whitelist file name or ip */
function is_validwhitelistname($name) {
	if (!is_string($name))
		return false;

	if (!preg_match("/[^a-zA-Z0-9\.\/]/", $name))
		return true;

	return false;
}

if (isset($id) && $a_suppress[$id]) {

	/* old settings */
	$pconfig['name'] = $a_suppress[$id]['name'];
	$pconfig['uuid'] = $a_suppress[$id]['uuid'];
	$pconfig['descr'] = $a_suppress[$id]['descr'];
	$pconfig['suppresspassthru'] = base64_decode($a_suppress[$id]['suppresspassthru']);
}

if ($_POST['submit']) {

	unset($input_errors);
	$pconfig = $_POST;

	do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);

	if(strtolower($_POST['name']) == "defaultwhitelist")
		$input_errors[] = "Whitelist file names may not be named defaultwhitelist.";

	$x = is_validwhitelistname($_POST['name']);
	if (!isset($x)) {
		$input_errors[] = "Reserved word used for whitelist file name.";
	} else {
		if (is_validwhitelistname($_POST['name']) == false)
			$input_errors[] = "Whitelist file name may only consist of the characters a-z, A-Z and 0-9 _. Note: No Spaces. Press Cancel to reset.";
	}


	/* check for name conflicts */
	foreach ($a_suppress as $s_list) {
		if (isset($id) && ($a_suppress[$id]) && ($a_suppress[$id] === $s_list))
			continue;

		if ($s_list['name'] == $_POST['name']) {
			$input_errors[] = "A whitelist file name with this name already exists.";
			break;
		}
	}


	if (!$input_errors) {
		$s_list = array();
		$s_list['name'] = $_POST['name'];
		$s_list['uuid'] = $suppress_uuid;
		$s_list['descr']  =  mb_convert_encoding($_POST['descr'],"HTML-ENTITIES","auto");
		$s_list['suppresspassthru'] = base64_encode($_POST['suppresspassthru']);

		if (isset($id) && $a_suppress[$id])
			$a_suppress[$id] = $s_list;
		else
			$a_suppress[] = $s_list;

		write_config();

		sync_snort_package_config();

		header("Location: /snort/snort_interfaces_suppress.php");
		exit;
	}

}

$pgtitle = "Services: Snort: Suppression: Edit $suppress_uuid";
include_once("head.inc");

?>

<body link="#0000CC" vlink="#0000CC" alink="#0000CC">

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

<?if($pfsense_stable == 'yes'){echo '<p class="pgtitle">' . $pgtitle . '</p>';}?>

<?php if ($input_errors) print_input_errors($input_errors); ?>
<?php
	if ($savemsg) {
		print_info_box($savemsg);
	}

?>
<form action="/snort/snort_interfaces_suppress_edit.php?id=<?=$id?>" name="iform" id="iform">
<table width="100%" border="0" cellpadding="6" cellspacing="0">
<tr>
	<td colspan="2" class="listtopic">Add the name and description of the file.</td>
</tr>
<tr>
	<td width="22%" valign="top" class="vncellreq">Name</td>
	<td width="78%" class="vtable"><input name="name" type="text" id="name"
		size="40" value="<?=htmlspecialchars($pconfig['name']);?>" /> <br />
	<span class="vexpl"> The list name may only consist of the
	characters a-z, A-Z and 0-9. <span class="red">Note: </span> No
	Spaces. </span></td>
</tr>
<tr>
	<td width="22%" valign="top" class="vncell">Description</td>
	<td width="78%" class="vtable"><input name="descr" type="text"
		id="descr" size="40" value="<?=$pconfig['descr'];?>" /> <br />
	<span class="vexpl"> You may enter a description here for your
	reference (not parsed). </span></td>
</tr>
<tr>
	<td colspan="2">
		<div style='background-color: #E0E0E0' id='redbox'>
		<table width='100%'>
			<tr>
				<td width='8%'>&nbsp;&nbsp;&nbsp;</td>
				<td width='70%'><font size="2" color='#FF850A'><b>NOTE:</b></font>
				<font size="2" color='#000000'>&nbsp;&nbsp;The threshold keyword
				is deprecated as of version 2.8.5. Use the event_filter keyword
				instead.</font></td>
			</tr>
		</table>
		</div>
	</td>
</tr>
<tr>
	<td colspan="2" valign="top" class="listtopic">Apply suppression or
	filters to rules. Valid keywords are 'suppress', 'event_filter' and
	'rate_filter'.</td>
</tr>
<tr>
	<td colspan="2" valign="top" class="vncell"><b>Example 1;</b>
		suppress gen_id 1, sig_id 1852, track by_src, ip 10.1.1.54<br>
		<b>Example 2;</b> event_filter gen_id 1, sig_id 1851, type limit,
		track by_src, count 1, seconds 60<br>
		<b>Example 3;</b> rate_filter gen_id 135, sig_id 1, track by_src,
		count 100, seconds 1, new_action log, timeout 10</td>
</tr>
<tr>
	<td colspan="2" width="100%" class="vtable"><textarea wrap="off"
		name="suppresspassthru" cols="100" rows="28" id="suppresspassthru">
		<?=htmlspecialchars($pconfig['suppresspassthru']);?></textarea>
	</td>
</tr>
<tr>
	<td width="22%">&nbsp</td>
	<td width="78%"><input id="submit" name="submit" type="submit"
		class="formbtn" value="Save" /> <input id="cancelbutton"
		name="cancelbutton" type="button" class="formbtn" value="Cancel"
		onclick="history.back()" /> <?php if (isset($id) && $a_suppress[$id]): ?>
					<input name="id" type="hidden" value="<?=$id;?>" /> <?php endif; ?>
	</td>
</tr>
</table>
</form>
<?php include("fend.inc"); ?>
<script type="text/javascript">
Rounded("div#redbox","all","#FFF","#E0E0E0","smooth");
Rounded("td#blackbox","all","#FFF","#000000","smooth");
</script>
</body>
</html>