<?php
/*
 * suricata_generate_yaml.php
 *
 * Significant portions of this code are based on original work done
 * for the Snort package for pfSense from the following contributors:
 * 
 * Copyright (C) 2005 Bill Marquette <bill.marquette@gmail.com>.
 * Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
 * Copyright (C) 2006 Scott Ullrich
 * Copyright (C) 2009 Robert Zelaya Sr. Developer
 * Copyright (C) 2012 Ermal Luci
 * All rights reserved.
 *
 * Adapted for Suricata by:
 * 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.
*/

// Create required Suricata directories if they don't exist
$suricata_dirs = array( $suricatadir, $suricatacfgdir, "{$suricatacfgdir}/rules",
	"{$suricatalogdir}suricata_{$if_real}{$suricata_uuid}" );
foreach ($suricata_dirs as $dir) {
	if (!is_dir($dir))
		safe_mkdir($dir);
}

// Copy required generic files to the interface sub-directory
$config_files = array( "classification.config", "reference.config", "gen-msg.map", "unicode.map" );
foreach ($config_files as $file) {
	if (file_exists("{$suricatadir}{$file}"))
		@copy("{$suricatadir}{$file}", "{$suricatacfgdir}/{$file}");
}

// Read the configuration parameters for the passed interface
// and construct appropriate string variables for use in the
// suricata.yaml template include file.

// Set HOME_NET and EXTERNAL_NET for the interface
$home_net_list = suricata_build_list($suricatacfg, $suricatacfg['homelistname']);
$home_net = implode(",", $home_net_list);
$home_net = trim($home_net);
$external_net = "";
if (!empty($suricatacfg['externallistname']) && $suricatacfg['externallistname'] != 'default') {
	$external_net_list = suricata_build_list($suricatacfg, $suricatacfg['externallistname'], false, true);
	$external_net = implode(",", $external_net_list);
	$external_net = "[" . trim($external_net) . "]";
}
else {
	$external_net = "[";
	foreach ($home_net_list as $ip)
		$external_net .= "!{$ip},";
	$external_net = trim($external_net, ', ') . "]";
}

// Set the PASS LIST and write its contents to disk
$plist = suricata_build_list($suricatacfg, $suricatacfg['passlistname'], true);
@file_put_contents("{$suricatacfgdir}/passlist", implode("\n", $plist));
$suri_passlist = "{$suricatacfgdir}/passlist";

// Set default and user-defined variables for SERVER_VARS and PORT_VARS
$suricata_servers = array (
	"dns_servers" => "\$HOME_NET", "smtp_servers" => "\$HOME_NET", "http_servers" => "\$HOME_NET",
	"sql_servers" => "\$HOME_NET", "telnet_servers" => "\$HOME_NET", "dnp3_server" => "\$HOME_NET",
	"dnp3_client" => "\$HOME_NET", "modbus_server" => "\$HOME_NET", "modbus_client" => "\$HOME_NET",
	"enip_server" => "\$HOME_NET", "enip_client" => "\$HOME_NET", "ftp_servers" => "\$HOME_NET", "ssh_servers" => "\$HOME_NET", 
	"aim_servers" => "64.12.24.0/23,64.12.28.0/23,64.12.161.0/24,64.12.163.0/24,64.12.200.0/24,205.188.3.0/24,205.188.5.0/24,205.188.7.0/24,205.188.9.0/24,205.188.153.0/24,205.188.179.0/24,205.188.248.0/24"
);
$addr_vars = "";
	foreach ($suricata_servers as $alias => $avalue) {
		if (!empty($suricatacfg["def_{$alias}"]) && is_alias($suricatacfg["def_{$alias}"])) {
			$avalue = trim(filter_expand_alias($suricatacfg["def_{$alias}"]));
			$avalue = preg_replace('/\s+/', ',', trim($avalue));
		}
		$addr_vars .= "    " . strtoupper($alias) . ": \"{$avalue}\"\n";
	}
$addr_vars = trim($addr_vars);
if(is_array($config['system']['ssh']) && isset($config['system']['ssh']['port']))
        $ssh_port = $config['system']['ssh']['port'];
else
        $ssh_port = "22";
$suricata_ports = array(
	"ftp_ports" => "21", 
	"http_ports" => "80", 
	"oracle_ports" => "1521", 
	"ssh_ports" => $ssh_port, 
	"shellcode_ports" => "!80", 
	"DNP3_PORTS" => "20000", "file_data_ports" => "\$HTTP_PORTS,110,143"
);
$port_vars = "";
	foreach ($suricata_ports as $alias => $avalue) {
		if (!empty($suricatacfg["def_{$alias}"]) && is_alias($suricatacfg["def_{$alias}"])) {
			$avalue = trim(filter_expand_alias($suricatacfg["def_{$alias}"]));
			$avalue = preg_replace('/\s+/', ',', trim($avalue));
		}
		$port_vars .= "    " . strtoupper($alias) . ": \"{$avalue}\"\n";
	}
$port_vars = trim($port_vars);

// Define a Suppress List (Threshold) if one is configured
$suppress = suricata_find_list($suricatacfg['suppresslistname'], 'suppress');
if (!empty($suppress)) {
	$suppress_data = str_replace("\r", "", base64_decode($suppress['suppresspassthru']));
	@file_put_contents("{$suricatacfgdir}/threshold.config", $suppress_data);
}
else
	@file_put_contents("{$suricatacfgdir}/threshold.config", "");

// Add interface-specific detection engine settings
if (!empty($suricatacfg['max_pending_packets']))
	$max_pend_pkts = $suricatacfg['max_pending_packets'];
else
	$max_pend_pkts = 1024;

if (!empty($suricatacfg['detect_eng_profile']))
	$detect_eng_profile = $suricatacfg['detect_eng_profile'];
else
	$detect_eng_profile = "medium";

if (!empty($suricatacfg['sgh_mpm_context']))
	$sgh_mpm_ctx = $suricatacfg['sgh_mpm_context'];
else
	$sgh_mpm_ctx = "auto";

if (!empty($suricatacfg['mpm_algo']))
	$mpm_algo = $suricatacfg['mpm_algo'];
else
	$mpm_algo = "ac";

if (!empty($suricatacfg['inspect_recursion_limit']) || $suricatacfg['inspect_recursion_limit'] == '0')
	$inspection_recursion_limit = $suricatacfg['inspect_recursion_limit'];
else
	$inspection_recursion_limit = "";

if ($suricatacfg['delayed_detect'] == 'on')
	$delayed_detect = "yes";
else
	$delayed_detect = "no";

if ($suricatacfg['intf_promisc_mode'] == 'on')
	$intf_promisc_mode = "yes";
else
	$intf_promisc_mode = "no";

// Add interface-specific blocking settings
if ($suricatacfg['blockoffenders'] == 'on')
	$suri_blockoffenders = "yes";
else
	$suri_blockoffenders = "no";

if ($suricatacfg['blockoffenderskill'] == 'on')
	$suri_killstates = "yes";
else
	$suri_killstates = "no";

if ($suricatacfg['blockoffendersip'] == 'src')
	$suri_blockip = 'SRC';
elseif ($suricatacfg['blockoffendersip'] == 'dst')
	$suri_blockip = 'DST';
else
	$suri_blockip = 'BOTH';

$suri_pf_table = SURICATA_PF_TABLE;

// Add interface-specific logging settings
if ($suricatacfg['alertsystemlog'] == 'on')
	$alert_syslog = "yes";
else
	$alert_syslog = "no";

if (!empty($suricatacfg['alertsystemlog_facility']))
	$alert_syslog_facility = $suricatacfg['alertsystemlog_facility'];
else
	$alert_syslog_facility = "local5";

if (!empty($suricatacfg['alertsystemlog_priority']))
	$alert_syslog_priority = $suricatacfg['alertsystemlog_priority'];
else
	$alert_syslog_priority = "Info";

if ($suricatacfg['enable_dns_log'] == 'on')
	$dns_log_enabled = "yes";
else
	$dns_log_enabled = "no";

if ($suricatacfg['append_dns_log'] == 'on')
	$dns_log_append = "yes";
else
	$dns_log_append = "no";

if ($suricatacfg['enable_stats_log'] == 'on')
	$stats_log_enabled = "yes";
else
	$stats_log_enabled = "no";

if (!empty($suricatacfg['stats_upd_interval']))
	$stats_upd_interval = $suricatacfg['stats_upd_interval'];
else
	$stats_upd_interval = "10";

if ($suricatacfg['append_stats_log'] == 'on')
	$stats_log_append = "yes";
else
	$stats_log_append = "no";

if ($suricatacfg['enable_http_log'] == 'on')
	$http_log_enabled = "yes";
else
	$http_log_enabled = "no";

if ($suricatacfg['append_http_log'] == 'on')
	$http_log_append = "yes";
else
	$http_log_append = "no";

if ($suricatacfg['http_log_extended'] == 'on')
	$http_log_extended = "yes";
else
	$http_log_extended = "no";

if ($suricatacfg['enable_tls_log'] == 'on')
	$tls_log_enabled = "yes";
else
	$tls_log_enabled = "no";

if ($suricatacfg['tls_log_extended'] == 'on')
	$tls_log_extended = "yes";
else
	$tls_log_extended = "no";

if ($suricatacfg['enable_json_file_log'] == 'on')
	$json_log_enabled = "yes";
else
	$json_log_enabled = "no";

if ($suricatacfg['append_json_file_log'] == 'on')
	$json_log_append = "yes";
else
	$json_log_append = "no";

if ($suricatacfg['enable_tracked_files_magic'] == 'on')
	$json_log_magic = "yes";
else
	$json_log_magic = "no";

if ($suricatacfg['enable_tracked_files_md5'] == 'on')
	$json_log_md5 = "yes";
else
	$json_log_md5 = "no";
	
if ($suricatacfg['enable_file_store'] == 'on') {
	$file_store_enabled = "yes";
	if (!file_exists("{$suricatalogdir}suricata_{$if_real}{$suricata_uuid}/file.waldo"))
		@file_put_contents("{$suricatalogdir}suricata_{$if_real}{$suricata_uuid}/file.waldo", "");
}
else
	$file_store_enabled = "no";

if ($suricatacfg['enable_pcap_log'] == 'on')
	$pcap_log_enabled = "yes";
else
	$pcap_log_enabled = "no";

if (!empty($suricatacfg['max_pcap_log_size']))
	$pcap_log_limit_size = $suricatacfg['max_pcap_log_size'];
else
	$pcap_log_limit_size = "32";

if (!empty($suricatacfg['max_pcap_log_files']))
	$pcap_log_max_files = $suricatacfg['max_pcap_log_files'];
else
	$pcap_log_max_files = "1000";

// Unified2 Alert Log Settings
if ($suricatacfg['barnyard_enable'] == 'on')
	$barnyard2_enabled = "yes";
else
	$barnyard2_enabled = "no";

if (isset($config['installedpackages']['suricata']['config'][0]['unified2_log_limit']))
	$unified2_log_limit = "{$config['installedpackages']['suricata']['config'][0]['unified2_log_limit']}mb";
else
	$unified2_log_limit = "32mb";

if (isset($suricatacfg['barnyard_sensor_id']))
	$unified2_sensor_id = $suricatacfg['barnyard_sensor_id'];
else
	$unified2_sensor_id = "0";

// Unified2 X-Forwarded-For logging options
if ($suricatacfg['barnyard_xff_logging'] == 'on') {
	$unified2_xff_output = "xff:";
	$unified2_xff_output .= "\n        enabled: yes";
	if (!empty($suricatacfg['barnyard_xff_mode']))
		$unified2_xff_output .= "\n        mode: {$suricatacfg['barnyard_xff_mode']}";
	else
		$unified2_xff_output .= "\n        mode: extra-data";
	if (!empty($suricatacfg['barnyard_xff_deployment']))
		$unified2_xff_output .= "\n        deployment: {$suricatacfg['barnyard_xff_deployment']}";
	else
		$unified2_xff_output .= "\n        deployment: reverse";
	if (!empty($suricatacfg['barnyard_xff_header']))
		$unified2_xff_output .= "\n        header: {$suricatacfg['barnyard_xff_header']}";
	else
		$unified2_xff_output .= "\n        header: X-Forwarded-For";
}
else {
	$unified2_xff_output = "xff:";
	$unified2_xff_output .= "\n        enabled: no";
}

// EVE JSON log output settings
if ($suricatacfg['enable_eve_log'] == 'on')
	$enable_eve_log = "yes";
else
	$enable_eve_log = "no";

if ($suricatacfg['eve_output_type'] == 'syslog')
	$eve_output_type = "syslog";
else
	$eve_output_type = "file";

if (!empty($suricatacfg['eve_systemlog_facility']))
	$eve_systemlog_facility = $suricatacfg['eve_systemlog_facility'];
else
	$eve_systemlog_facility = "local1";

if (!empty($suricatacfg['eve_systemlog_priority']))
	$eve_systemlog_priority = $suricatacfg['eve_systemlog_priority'];
else
	$eve_systemlog_priority = "info";

// EVE log output included information
$eve_out_types = "";
if ($suricatacfg['eve_log_alerts'] == 'on')
	$eve_out_types .= "\n        - alert";

if ($suricatacfg['eve_log_http'] == 'on') {
	$eve_out_types .= "\n        - http:";
	if ($suricatacfg['http_log_extended'] == 'on')
		$eve_out_types .= "\n            extended: yes";
	else
		$eve_out_types .= "\n            extended: no";
}

if ($suricatacfg['eve_log_dns'] == 'on')
	$eve_out_types .= "\n        - dns";

if ($suricatacfg['eve_log_tls'] == 'on') {
	$eve_out_types .= "\n        - tls:";
	if ($suricatacfg['tls_log_extended'] == 'on')
		$eve_out_types .= "\n            extended: yes";
	else
		$eve_out_types .= "\n            extended: no";
}

if ($suricatacfg['eve_log_files'] == 'on') {
	$eve_out_types .= "\n        - files:";
	if ($suricatacfg['enable_tracked_files_magic'] == 'on')
		$eve_out_types .= "\n            force-magic: yes";
	else
		$eve_out_types .= "\n            force-magic: no";
	if ($suricatacfg['enable_tracked_files_md5'] == 'on')
		$eve_out_types .= "\n            force-md5: yes";
	else
		$eve_out_types .= "\n            force-md5: no";
}

if ($suricatacfg['eve_log_ssh'] == 'on')
	$eve_out_types .= "\n        - ssh";

// Add interface-specific IP defrag settings
if (!empty($suricatacfg['frag_memcap']))
	$frag_memcap = $suricatacfg['frag_memcap'];
else
	$frag_memcap = "33554432";

if (!empty($suricatacfg['ip_max_trackers']))
	$ip_max_trackers = $suricatacfg['ip_max_trackers'];
else
	$ip_max_trackers = "65535";

if (!empty($suricatacfg['ip_max_frags']))
	$ip_max_frags = $suricatacfg['ip_max_frags'];
else
	$ip_max_frags = "65535";

if (!empty($suricatacfg['frag_hash_size']))
	$frag_hash_size = $suricatacfg['frag_hash_size'];
else
	$frag_hash_size = "65536";

if (!empty($suricatacfg['ip_frag_timeout']))
	$ip_frag_timeout = $suricatacfg['ip_frag_timeout'];
else
	$ip_frag_timeout = "60";

// Add interface-specific flow manager setttings
if (!empty($suricatacfg['flow_memcap']))
	$flow_memcap = $suricatacfg['flow_memcap'];
else
	$flow_memcap = "33554432";

if (!empty($suricatacfg['flow_hash_size']))
	$flow_hash_size = $suricatacfg['flow_hash_size'];
else
	$flow_hash_size = "65536";

if (!empty($suricatacfg['flow_prealloc']))
	$flow_prealloc = $suricatacfg['flow_prealloc'];
else
	$flow_prealloc = "10000";

if (!empty($suricatacfg['flow_emerg_recovery']))
	$flow_emerg_recovery = $suricatacfg['flow_emerg_recovery'];
else
	$flow_emerg_recovery = "30";

if (!empty($suricatacfg['flow_prune']))
	$flow_prune = $suricatacfg['flow_prune'];
else
	$flow_prune = "5";

// Add interface-specific flow timeout setttings
if (!empty($suricatacfg['flow_tcp_new_timeout']))
	$flow_tcp_new_timeout = $suricatacfg['flow_tcp_new_timeout'];
else
	$flow_tcp_new_timeout = "60";

if (!empty($suricatacfg['flow_tcp_established_timeout']))
	$flow_tcp_established_timeout = $suricatacfg['flow_tcp_established_timeout'];
else
	$flow_tcp_established_timeout = "3600";

if (!empty($suricatacfg['flow_tcp_closed_timeout']))
	$flow_tcp_closed_timeout = $suricatacfg['flow_tcp_closed_timeout'];
else
	$flow_tcp_closed_timeout = "120";

if (!empty($suricatacfg['flow_tcp_emerg_new_timeout']))
	$flow_tcp_emerg_new_timeout = $suricatacfg['flow_tcp_emerg_new_timeout'];
else
	$flow_tcp_emerg_new_timeout = "10";

if (!empty($suricatacfg['flow_tcp_emerg_established_timeout']))
	$flow_tcp_emerg_established_timeout = $suricatacfg['flow_tcp_emerg_established_timeout'];
else
	$flow_tcp_emerg_established_timeout = "300";

if (!empty($suricatacfg['flow_tcp_emerg_closed_timeout']))
	$flow_tcp_emerg_closed_timeout = $suricatacfg['flow_tcp_emerg_closed_timeout'];
else
	$flow_tcp_emerg_closed_timeout = "20";

if (!empty($suricatacfg['flow_udp_new_timeout']))
	$flow_udp_new_timeout = $suricatacfg['flow_udp_new_timeout'];
else
	$flow_udp_new_timeout = "30";

if (!empty($suricatacfg['flow_udp_established_timeout']))
	$flow_udp_established_timeout = $suricatacfg['flow_udp_established_timeout'];
else
	$flow_udp_established_timeout = "300";

if (!empty($suricatacfg['flow_udp_emerg_new_timeout']))
	$flow_udp_emerg_new_timeout = $suricatacfg['flow_udp_emerg_new_timeout'];
else
	$flow_udp_emerg_new_timeout = "10";

if (!empty($suricatacfg['flow_udp_emerg_established_timeout']))
	$flow_udp_emerg_established_timeout = $suricatacfg['flow_udp_emerg_established_timeout'];
else
	$flow_udp_emerg_established_timeout = "100";

if (!empty($suricatacfg['flow_icmp_new_timeout']))
	$flow_icmp_new_timeout = $suricatacfg['flow_icmp_new_timeout'];
else
	$flow_icmp_new_timeout = "30";

if (!empty($suricatacfg['flow_icmp_established_timeout']))
	$flow_icmp_established_timeout = $suricatacfg['flow_icmp_established_timeout'];
else
	$flow_icmp_established_timeout = "300";

if (!empty($suricatacfg['flow_icmp_emerg_new_timeout']))
	$flow_icmp_emerg_new_timeout = $suricatacfg['flow_icmp_emerg_new_timeout'];
else
	$flow_icmp_emerg_new_timeout = "10";

if (!empty($suricatacfg['flow_icmp_emerg_established_timeout']))
	$flow_icmp_emerg_established_timeout = $suricatacfg['flow_icmp_emerg_established_timeout'];
else
	$flow_icmp_emerg_established_timeout = "100";

// Add interface-specific stream settings
if (!empty($suricatacfg['stream_memcap']))
	$stream_memcap = $suricatacfg['stream_memcap'];
else
	$stream_memcap = "67108864";

if (!empty($suricatacfg['stream_prealloc_sessions']))
	$stream_prealloc_sessions = $suricatacfg['stream_prealloc_sessions'];
else
	$stream_prealloc_sessions = "32768";

if (!empty($suricatacfg['reassembly_memcap']))
	$reassembly_memcap = $suricatacfg['reassembly_memcap'];
else
	$reassembly_memcap = "67108864";

if (!empty($suricatacfg['reassembly_depth']) || $suricatacfg['reassembly_depth'] == '0')
	$reassembly_depth = $suricatacfg['reassembly_depth'];
else
	$reassembly_depth = "1048576";

if (!empty($suricatacfg['reassembly_to_server_chunk']))
	$reassembly_to_server_chunk = $suricatacfg['reassembly_to_server_chunk'];
else
	$reassembly_to_server_chunk = "2560";

if (!empty($suricatacfg['reassembly_to_client_chunk']))
	$reassembly_to_client_chunk = $suricatacfg['reassembly_to_client_chunk'];
else
	$reassembly_to_client_chunk = "2560";

if ($suricatacfg['enable_midstream_sessions'] == 'on')
	$stream_enable_midstream = "true";
else
	$stream_enable_midstream = "false";

if ($suricatacfg['enable_async_sessions'] == 'on')
	$stream_enable_async = "true";
else
	$stream_enable_async = "false";

// Add the OS-specific host policies if configured, otherwise
// just set default to BSD for all networks.
$host_os_policy = "";
if (!is_array($suricatacfg['host_os_policy']['item']))
	$suricatacfg['host_os_policy']['item'] = array();
if (count($suricatacfg['host_os_policy']['item']) < 1)
	$host_os_policy = "bsd: [0.0.0.0/0]";
else {
	foreach ($suricatacfg['host_os_policy']['item'] as $k => $v) {
		$engine = "{$v['policy']}: ";
		if ($v['bind_to'] <> "all") {
			$tmp = trim(filter_expand_alias($v['bind_to']));
			if (!empty($tmp)) {
				$engine .= "[";
				$tmp = preg_replace('/\s+/', ',', $tmp);
				$list = explode(',', $tmp);
				foreach ($list as $addr) {
					if (is_ipaddrv6($addr) || is_subnetv6($addr))
						$engine .= "\"{$addr}\", ";
					elseif (is_ipaddrv4($addr) || is_subnetv4($addr))
						$engine .= "{$addr}, ";
					else
						log_error("[suricata] WARNING: invalid IP address value '{$addr}' in Alias {$v['bind_to']} will be ignored.");
				}
				$engine = trim($engine, ' ,');
				$engine .= "]";
			}
			else {
				log_error("[suricata] WARNING: unable to resolve IP List Alias '{$v['bind_to']}' for Host OS Policy '{$v['name']}' ... ignoring this entry.");
				continue;
			}
		}
		else
			$engine .= "[0.0.0.0/0]";

		$host_os_policy .= "  {$engine}\n";
	}
	// Remove trailing newline
	$host_os_policy = trim($host_os_policy);
}

// Add the HTTP Server-specific policies if configured, otherwise
// just set default to IDS for all networks.
$http_hosts_policy = "";
$http_hosts_default_policy = "";
if (!is_array($suricatacfg['libhtp_policy']['item']))
	$suricatacfg['libhtp_policy']['item'] = array();
if (count($suricatacfg['libhtp_policy']['item']) < 1) {
	$http_hosts_default_policy = "     personality: IDS\n     request-body-limit: 4096\n     response-body-limit: 4096\n";
	$http_hosts_default_policy .= "     double-decode-path: no\n     double-decode-query: no\n     uri-include-all: no\n";
}
else {
	foreach ($suricatacfg['libhtp_policy']['item'] as $k => $v) {
		if ($v['bind_to'] <> "all") {
			$engine = "server-config:\n     - {$v['name']}:\n";
			$tmp = trim(filter_expand_alias($v['bind_to']));
			if (!empty($tmp)) {
				$engine .= "         address: [";
				$tmp = preg_replace('/\s+/', ',', $tmp);
				$list = explode(',', $tmp);
				foreach ($list as $addr) {
					if (is_ipaddrv6($addr) || is_subnetv6($addr))
						$engine .= "\"{$addr}\", ";
					elseif (is_ipaddrv4($addr) || is_subnetv4($addr))
						$engine .= "{$addr}, ";
					else {
						log_error("[suricata] WARNING: invalid IP address value '{$addr}' in Alias {$v['bind_to']} will be ignored.");
						continue;
					}
				}
				$engine = trim($engine, ' ,');
				$engine .= "]\n";
				$engine .= "         personality: {$v['personality']}\n         request-body-limit: {$v['request-body-limit']}\n";
				$engine .= "         response-body-limit: {$v['response-body-limit']}\n";
				$engine .= "         double-decode-path: {$v['double-decode-path']}\n";
				$engine .= "         double-decode-query: {$v['double-decode-query']}\n";
				$engine .= "         uri-include-all: {$v['uri-include-all']}\n";
				$http_hosts_policy .= "   {$engine}\n";
			}
			else {
				log_error("[suricata] WARNING: unable to resolve IP List Alias '{$v['bind_to']}' for Host OS Policy '{$v['name']}' ... ignoring this entry.");
				continue;
			}
		}
		else {
			$http_hosts_default_policy = "     personality: {$v['personality']}\n     request-body-limit: {$v['request-body-limit']}\n";
			$http_hosts_default_policy .= "     response-body-limit: {$v['response-body-limit']}\n";
			$http_hosts_default_policy .= "     double-decode-path: {$v['double-decode-path']}\n";
			$http_hosts_default_policy .= "     double-decode-query: {$v['double-decode-query']}\n";
			$http_hosts_default_policy .= "     uri-include-all: {$v['uri-include-all']}\n";
		}
	}
	// Remove trailing newline
	$http_hosts_default_policy = trim($http_hosts_default_policy);
	$http_hosts_policy = trim($http_hosts_policy);
}

// Configure ASN1 max frames value
if (!empty($suricatacfg['asn1_max_frames']))
	$asn1_max_frames = $suricatacfg['asn1_max_frames'];
else
	$asn1_max_frames = "256";

// Configure App-Layer Parsers/Detection
if (!empty($suricatacfg['tls_parser']))
	$tls_parser = $suricatacfg['tls_parser'];
else
	$tls_parser = "yes";
if (!empty($suricatacfg['dcerpc_parser']))
	$dcerpc_parser = $suricatacfg['dcerpc_parser'];
else
	$dcerpc_parser = "yes";
if (!empty($suricatacfg['ftp_parser']))
	$ftp_parser = $suricatacfg['ftp_parser'];
else
	$ftp_parser = "yes";
if (!empty($suricatacfg['ssh_parser']))
	$ssh_parser = $suricatacfg['ssh_parser'];
else
	$ssh_parser = "yes";
if (!empty($suricatacfg['smtp_parser']))
	$smtp_parser = $suricatacfg['smtp_parser'];
else
	$smtp_parser = "yes";
if (!empty($suricatacfg['imap_parser']))
	$imap_parser = $suricatacfg['imap_parser'];
else
	$imap_parser = "detection-only";
if (!empty($suricatacfg['msn_parser']))
	$msn_parser = $suricatacfg['msn_parser'];
else
	$msn_parser = "detection-only";
if (!empty($suricatacfg['smb_parser']))
	$smb_parser = $suricatacfg['smb_parser'];
else
	$smb_parser = "yes";

/* DNS Parser */
if (!empty($suricatacfg['dns_parser_tcp']))
	$dns_parser_tcp = $suricatacfg['dns_parser_tcp'];
else
	$dns_parser_tcp = "yes";
if (!empty($suricatacfg['dns_parser_udp']))
	$dns_parser_udp = $suricatacfg['dns_parser_udp'];
else
	$dns_parser_udp = "yes";
if (!empty($suricatacfg['dns_global_memcap']))
	$dns_global_memcap = $suricatacfg['dns_global_memcap'];
else
	$dns_global_memcap = "16777216";
if (!empty($suricatacfg['dns_state_memcap']))
	$dns_state_memcap = $suricatacfg['dns_state_memcap'];
else
	$dns_state_memcap = "524288";
if (!empty($suricatacfg['dns_request_flood_limit']))
	$dns_request_flood_limit = $suricatacfg['dns_request_flood_limit'];
else
	$dns_request_flood_limit = "500";

/* HTTP Parser */
if (!empty($suricatacfg['http_parser']))
	$http_parser = $suricatacfg['http_parser'];
else
	$http_parser = "yes";
if (!empty($suricatacfg['http_parser_memcap']))
	$http_parser_memcap = $suricatacfg['http_parser_memcap'];
else
	$http_parser_memcap = "67108864";

/* Configure the IP REP section */
$iprep_path = rtrim(SURICATA_IPREP_PATH, '/');
$iprep_config = "# IP Reputation\n";
if ($suricatacfg['enable_iprep'] == "on") {
	$iprep_config .= "default-reputation-path: {$iprep_path}\n";
	$iprep_config .= "reputation-categories-file: {$iprep_path}/{$suricatacfg['iprep_catlist']}\n";
	$iprep_config .= "reputation-files:";

	if (!is_array($suricatacfg['iplist_files']['item']))
		$suricatacfg['iplist_files']['item'] = array();

	foreach ($suricatacfg['iplist_files']['item'] as $f)
		$iprep_config .= "\n  - $f";
}

/* Configure Host Table settings */
if (!empty($suricatacfg['host_memcap']))
	$host_memcap = $suricatacfg['host_memcap'];
else
	$host_memcap = "16777216";
if (!empty($suricatacfg['host_hash_size']))
	$host_hash_size = $suricatacfg['host_hash_size'];
else
	$host_hash_size = "4096";
if (!empty($suricatacfg['host_prealloc']))
	$host_prealloc = $suricatacfg['host_prealloc'];
else
	$host_prealloc = "1000";

// Create the rules files and save in the interface directory
suricata_prepare_rule_files($suricatacfg, $suricatacfgdir);

// Check and configure only non-empty rules files for the interface
$rules_files = "";
if (filesize("{$suricatacfgdir}/rules/".SURICATA_ENFORCING_RULES_FILENAME) > 0)
	$rules_files .= SURICATA_ENFORCING_RULES_FILENAME;
if (filesize("{$suricatacfgdir}/rules/".FLOWBITS_FILENAME) > 0)
	$rules_files .= "\n - " . FLOWBITS_FILENAME;
if (filesize("{$suricatacfgdir}/rules/custom.rules") > 0)
	$rules_files .= "\n - custom.rules";
$rules_files = ltrim($rules_files, '\n -');

// Add the general logging settings to the configuration (non-interface specific)
if ($config['installedpackages']['suricata']['config'][0]['log_to_systemlog'] == 'on')
	$suricata_use_syslog = "yes";
else
	$suricata_use_syslog = "no";

if (!empty($config['installedpackages']['suricata']['config'][0]['log_to_systemlog']))
	$suricata_use_syslog_facility = $config['installedpackages']['suricata']['config'][0]['log_to_systemlog'];
else
	$suricata_use_syslog_facility = "local1";

?>