<?php
/*
 * suricata_suppress_edit.php
	Copyright (C) 2014 Bill Meeks
	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/suricata/suricata.inc");


if (!is_array($config['installedpackages']['suricata']))
	$config['installedpackages']['suricata'] = array();
$suricataglob = $config['installedpackages']['suricata'];

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

if (isset($_POST['id']) && is_numericint($_POST['id']))
	$id = $_POST['id'];
elseif (isset($_GET['id']) && is_numericint($_GET['id']))
	$id = htmlspecialchars($_GET['id']);

/* 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'];
	if (!empty($a_suppress[$id]['suppresspassthru'])) {
		$pconfig['suppresspassthru'] = base64_decode($a_suppress[$id]['suppresspassthru']);
		$pconfig['suppresspassthru'] = str_replace("&#8203;", "", $pconfig['suppresspassthru']);
	}
	if (empty($a_suppress[$id]['uuid']))
		$pconfig['uuid'] = uniqid();
}

if ($_POST['save']) {
	unset($input_errors);
	$pconfig = $_POST;

	$reqdfields = explode(" ", "name");
	$reqdfieldsn = array("Name");
	do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);

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

	if (is_validwhitelistname($_POST['name']) == false)
		$input_errors[] = "Whitelist file name may only consist of the characters \"a-z, A-Z, 0-9 and _\". Note: No Spaces or dashes. 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'] = uniqid();
		$s_list['descr']  =  mb_convert_encoding($_POST['descr'],"HTML-ENTITIES","auto");
		if ($_POST['suppresspassthru']) {
			$s_list['suppresspassthru'] = str_replace("&#8203;", "", $s_list['suppresspassthru']);
			$s_list['suppresspassthru'] = base64_encode($_POST['suppresspassthru']);
		}

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

		write_config();
		sync_suricata_package_config();

		header("Location: /suricata/suricata_suppress.php");
		exit;
	}
}

$pgtitle = gettext("Suricata: Suppression List Edit - {$a_suppress[$id]['name']}");
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>';}

if ($input_errors) print_input_errors($input_errors);
if ($savemsg)
	print_info_box($savemsg);

?>
<form action="/suricata/suricata_suppress_edit.php" name="iform" id="iform" method="post">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr><td>
<?php
        $tab_array = array();
	$tab_array[] = array(gettext("Suricata Interfaces"), false, "/suricata/suricata_interfaces.php");
	$tab_array[] = array(gettext("Global Settings"), false, "/suricata/suricata_global.php");
	$tab_array[] = array(gettext("Update Rules"), false, "/suricata/suricata_download_updates.php");
	$tab_array[] = array(gettext("Alerts"), false, "/suricata/suricata_alerts.php");
	$tab_array[] = array(gettext("Suppress"), true, "/suricata/suricata_suppress.php");
	$tab_array[] = array(gettext("Logs Browser"), false, "/suricata/suricata_logs_browser.php");
	$tab_array[] = array(gettext("Logs Mgmt"), false, "/suricata/suricata_logs_mgmt.php");
        display_top_tabs($tab_array);
?>
</td></tr>
<tr><td><div id="mainarea">
<table id="maintable" class="tabcont" 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"><?php echo gettext("Name"); ?></td>
	<td width="78%" class="vtable"><input name="name" type="text" id="name" 
		class="formfld unknown" size="40" value="<?=htmlspecialchars($pconfig['name']);?>" /> <br />
	<span class="vexpl"> <?php echo gettext("The list name may only consist of the " .
	"characters \"a-z, A-Z, 0-9 and _\"."); ?>&nbsp;&nbsp;<span class="red"><?php echo gettext("Note:"); ?> </span>
	<?php echo gettext("No Spaces or dashes."); ?> </span></td>
</tr>
<tr>
	<td width="22%" valign="top" class="vncell"><?php echo gettext("Description"); ?></td>
	<td width="78%" class="vtable"><input name="descr" type="text" 
		class="formfld unknown" id="descr" size="40" value="<?=$pconfig['descr'];?>" /> <br />
	<span class="vexpl"> <?php echo gettext("You may enter a description here for your " .
	"reference (not parsed)."); ?> </span></td>
</tr>
<tr>
	<td colspan="2" align="center" height="30px">
				<font size="2"><span class="red"><strong><?php echo gettext("NOTE:"); ?></strong></span></font>
				<font color='#000000'>&nbsp;<?php echo gettext("The threshold keyword " .
				"is deprecated as of version 2.8.5. Use the event_filter keyword " .
				"instead."); ?></font>
	</td>
</tr>
<tr>
	<td colspan="2" valign="top" class="listtopic"><?php echo gettext("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><?php echo gettext("Example 1;"); ?></b>
		suppress gen_id 1, sig_id 1852, track by_src, ip 10.1.1.54<br/>
		<b><?php echo gettext("Example 2;"); ?></b> event_filter gen_id 1, sig_id 1851, type limit,
		track by_src, count 1, seconds 60<br/>
		<b><?php echo gettext("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" class="vtable"><textarea wrap="off" style="width:100%; height:100%;" 
		name="suppresspassthru" cols="90" rows="26" id="suppresspassthru" class="formpre"><?=htmlspecialchars($pconfig['suppresspassthru']);?></textarea>
	</td>
</tr>
<tr>
	<td colspan="2"><input id="save" name="save" type="submit" 
		class="formbtn" value="Save" />&nbsp;&nbsp;<input id="cancelbutton" 
		name="cancelbutton" type="button" class="formbtn" value="Cancel" 
		onclick="history.back();"/> <?php if (isset($id) && $a_suppress[$id]): ?>
		<input name="id" type="hidden" value="<?=$id;?>"/> <?php endif; ?>
	</td>
</tr>
</table>
</div>
</td></tr>
</table>
</form>
<?php include("fend.inc"); ?>
<script type="text/javascript">
Rounded("div#redbox","all","#FFF","#E0E0E0","smooth");
</script>
</body>
</html>