.
* Copyright (C) 2011-2012 Ermal Luci
* Copyright (C) 2014 Bill Meeks
* All rights reserved.
*
* Copyright (C) 2008-2009 Robert Zelaya
* Modified for the Pfsense snort package.
* 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");
global $g;
$snortdir = SNORTDIR;
/* make things short */
$pconfig['snortdownload'] = $config['installedpackages']['snortglobal']['snortdownload'] == "on" ? 'on' : 'off';
$pconfig['oinkmastercode'] = $config['installedpackages']['snortglobal']['oinkmastercode'];
$pconfig['etpro_code'] = $config['installedpackages']['snortglobal']['etpro_code'];
$pconfig['emergingthreats'] = $config['installedpackages']['snortglobal']['emergingthreats'] == "on" ? 'on' : 'off';
$pconfig['emergingthreats_pro'] = $config['installedpackages']['snortglobal']['emergingthreats_pro'] == "on" ? 'on' : 'off';
$pconfig['rm_blocked'] = $config['installedpackages']['snortglobal']['rm_blocked'];
$pconfig['snortloglimit'] = $config['installedpackages']['snortglobal']['snortloglimit'];
$pconfig['snortloglimitsize'] = $config['installedpackages']['snortglobal']['snortloglimitsize'];
$pconfig['autorulesupdate7'] = $config['installedpackages']['snortglobal']['autorulesupdate7'];
$pconfig['rule_update_starttime'] = $config['installedpackages']['snortglobal']['rule_update_starttime'];
$pconfig['forcekeepsettings'] = $config['installedpackages']['snortglobal']['forcekeepsettings'] == "on" ? 'on' : 'off';
$pconfig['snortcommunityrules'] = $config['installedpackages']['snortglobal']['snortcommunityrules'] == "on" ? 'on' : 'off';
$pconfig['clearlogs'] = $config['installedpackages']['snortglobal']['clearlogs'] == "on" ? 'on' : 'off';
$pconfig['clearblocks'] = $config['installedpackages']['snortglobal']['clearblocks'] == "on" ? 'on' : 'off';
/* Set sensible values for any empty default params */
if (empty($pconfig['snortloglimit']))
$pconfig['snortloglimit'] = 'on';
if (!isset($pconfig['rule_update_starttime']))
$pconfig['rule_update_starttime'] = '00:05';
if ($_POST['rule_update_starttime']) {
if (!preg_match('/^([01]?[0-9]|2[0-3]):?([0-5][0-9])$/', $_POST['rule_update_starttime']))
$input_errors[] = "Invalid Rule Update Start Time! Please supply a value in 24-hour format as 'HH:MM'.";
}
if ($_POST['snortdownload'] == "on" && empty($_POST['oinkmastercode']))
$input_errors[] = "You must supply an Oinkmaster code in the box provided in order to enable Snort VRT rules!";
if ($_POST['emergingthreats_pro'] == "on" && empty($_POST['etpro_code']))
$input_errors[] = "You must supply a subscription code in the box provided in order to enable Emerging Threats Pro rules!";
/* if no errors move foward with save */
if (!$input_errors) {
if ($_POST["save"]) {
$config['installedpackages']['snortglobal']['snortdownload'] = $_POST['snortdownload'] ? 'on' : 'off';
$config['installedpackages']['snortglobal']['snortcommunityrules'] = $_POST['snortcommunityrules'] ? 'on' : 'off';
$config['installedpackages']['snortglobal']['emergingthreats'] = $_POST['emergingthreats'] ? 'on' : 'off';
$config['installedpackages']['snortglobal']['emergingthreats_pro'] = $_POST['emergingthreats_pro'] ? 'on' : 'off';
$config['installedpackages']['snortglobal']['clearlogs'] = $_POST['clearlogs'] ? 'on' : 'off';
$config['installedpackages']['snortglobal']['clearblocks'] = $_POST['clearblocks'] ? 'on' : 'off';
// If any rule sets are being turned off, then remove them
// from the active rules section of each interface. Start
// by building an arry of prefixes for the disabled rules.
$disabled_rules = array();
$disable_ips_policy = false;
if ($config['installedpackages']['snortglobal']['snortdownload'] == 'off') {
$disabled_rules[] = VRT_FILE_PREFIX;
$disable_ips_policy = true;
}
if ($config['installedpackages']['snortglobal']['snortcommunityrules'] == 'off')
$disabled_rules[] = GPL_FILE_PREFIX;
if ($config['installedpackages']['snortglobal']['emergingthreats'] == 'off')
$disabled_rules[] = ET_OPEN_FILE_PREFIX;
if ($config['installedpackages']['snortglobal']['emergingthreats_pro'] == 'off')
$disabled_rules[] = ET_PRO_FILE_PREFIX;
// Now walk all the configured interface rulesets and remove
// any matching the disabled ruleset prefixes.
if (is_array($config['installedpackages']['snortglobal']['rule'])) {
foreach ($config['installedpackages']['snortglobal']['rule'] as &$iface) {
// Disable Snort IPS policy if VRT rules are disabled
if ($disable_ips_policy) {
$iface['ips_policy_enable'] = 'off';
unset($iface['ips_policy']);
}
$enabled_rules = explode("||", $iface['rulesets']);
foreach ($enabled_rules as $k => $v) {
foreach ($disabled_rules as $d)
if (strpos(trim($v), $d) !== false)
unset($enabled_rules[$k]);
}
$iface['rulesets'] = implode("||", $enabled_rules);
}
}
$config['installedpackages']['snortglobal']['oinkmastercode'] = $_POST['oinkmastercode'];
$config['installedpackages']['snortglobal']['etpro_code'] = $_POST['etpro_code'];
$config['installedpackages']['snortglobal']['rm_blocked'] = $_POST['rm_blocked'];
if ($_POST['snortloglimitsize']) {
$config['installedpackages']['snortglobal']['snortloglimit'] = $_POST['snortloglimit'];
$config['installedpackages']['snortglobal']['snortloglimitsize'] = $_POST['snortloglimitsize'];
} else {
$config['installedpackages']['snortglobal']['snortloglimit'] = 'on';
/* code will set limit to 21% of slice that is unused */
$snortloglimitDSKsize = round(exec('df -k /var | grep -v "Filesystem" | awk \'{print $4}\'') * .22 / 1024);
$config['installedpackages']['snortglobal']['snortloglimitsize'] = $snortloglimitDSKsize;
}
$config['installedpackages']['snortglobal']['autorulesupdate7'] = $_POST['autorulesupdate7'];
/* Check and adjust format of Rule Update Starttime string to add colon and leading zero if necessary */
$pos = strpos($_POST['rule_update_starttime'], ":");
if ($pos === false) {
$tmp = str_pad($_POST['rule_update_starttime'], 4, "0", STR_PAD_LEFT);
$_POST['rule_update_starttime'] = substr($tmp, 0, 2) . ":" . substr($tmp, -2);
}
$config['installedpackages']['snortglobal']['rule_update_starttime'] = str_pad($_POST['rule_update_starttime'], 4, "0", STR_PAD_LEFT);
$config['installedpackages']['snortglobal']['forcekeepsettings'] = $_POST['forcekeepsettings'] ? 'on' : 'off';
$retval = 0;
/* create whitelist and homenet file then sync files */
sync_snort_package_config();
write_config("Snort pkg: modified global settings.");
/* forces page to reload new settings */
header( 'Expires: Sat, 26 Jul 1997 05:00:00 GMT' );
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' );
header( 'Cache-Control: no-store, no-cache, must-revalidate' );
header( 'Cache-Control: post-check=0, pre-check=0', false );
header( 'Pragma: no-cache' );
header("Location: /snort/snort_interfaces_global.php");
exit;
}
}
$pgtitle = gettext("Snort: Global Settings");
include_once("head.inc");
?>
' . $pgtitle . '';
/* Display Alert message, under form tag or no refresh */
if ($input_errors)
print_input_errors($input_errors);
?>