<?php
/* $Id$ */
/*
	system.inc
	part of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
	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.
*/

/*
	pfSense_BUILDER_BINARIES:	/usr/sbin/powerd	/usr/bin/killall	/sbin/sysctl	/sbin/route
	pfSense_BUILDER_BINARIES:	/bin/hostname	/bin/ls	/usr/bin/netstat	/usr/sbin/syslogd	
	pfSense_BUILDER_BINARIES:	/usr/sbin/pccardd	/usr/local/sbin/lighttpd	/bin/chmod 	/bin/mkdir
	pfSense_BUILDER_BINARIES:	/usr/bin/tar		/usr/local/sbin/ntpd	/usr/sbin/ntpdate
	pfSense_BUILDER_BINARIES:	/usr/bin/nohup	/sbin/dmesg	/usr/local/sbin/atareinit	/sbin/kldload
	pfSense_MODULE:	utils
*/

function activate_powerd() {
	global $config, $g;
	if(isset($config['system']['powerd_enable'])) {
		if ($g["platform"] == "nanobsd")
			exec("/sbin/kldload cpufreq");
		exec("/usr/sbin/powerd -b adp -a adp");
	} else {
		if(is_process_running("powerd"))
			exec("/usr/bin/killall powerd");
	}
}

function get_default_sysctl_value($id) {
	global $sysctls;

	if (isset($sysctls[$id]))
		return $sysctls[$id];
}

function activate_sysctls() {
	global $config, $g;
	exec("/sbin/sysctl net.enc.out.ipsec_bpf_mask=0x00000001");
	exec("/sbin/sysctl net.enc.out.ipsec_filter_mask=0x00000001");
	exec("/sbin/sysctl net.enc.in.ipsec_bpf_mask=0x00000002");
	exec("/sbin/sysctl net.enc.in.ipsec_filter_mask=0x00000002");

	if(is_array($config['sysctl'])) {
		foreach($config['sysctl']['item'] as $tunable) {
			if($tunable['value'] == "default") {
				$value = get_default_sysctl_value($tunable['tunable']);
				mwexec("/sbin/sysctl " . $tunable['tunable'] . "=\"" . $value .  "\"");
			} else { 
				mwexec("/sbin/sysctl " . $tunable['tunable'] . "=\"" . $tunable['value'] .  "\"");
			}
		}
	}
}

function system_resolvconf_generate($dynupdate = false) {
	global $config, $g;

	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_resolvconf_generate() being called $mt\n";
	}

	$syscfg = $config['system'];

	$resolvconf = "domain {$syscfg['domain']}\n";

	$havedns = false;

	if (isset($syscfg['dnsallowoverride'])) {
		/* get dynamically assigned DNS servers (if any) */
		$ns = array_unique(get_searchdomains());
		foreach($ns as $searchserver) {
			if($searchserver) {
				$resolvconf .= "search {$searchserver}\n";
				$havedns = true;
			}
		}
		$ns = array_unique(get_nameservers());
		foreach($ns as $nameserver) {
			if($nameserver) {
				$resolvconf .= "nameserver $nameserver\n";
				$havedns = true;
			}
		}
	}
	if (!$havedns && is_array($syscfg['dnsserver'])) {
		foreach ($syscfg['dnsserver'] as $ns) {
			if ($ns) {
				$resolvconf .= "nameserver $ns\n";
				$havedns = true;
			}
		}
	}

	$fd = fopen("{$g['varetc_path']}/resolv.conf", "w");
	if (!$fd) {
		printf("Error: cannot open resolv.conf in system_resolvconf_generate().\n");
		return 1;
	}

	fwrite($fd, $resolvconf);
	fclose($fd);

	if (!$g['booting']) {
		/* restart dhcpd (nameservers may have changed) */
		if (!$dynupdate)
			services_dhcpd_configure();
	}

	/* setup static routes for DNS servers. */
	for ($dnscounter=1; $dnscounter<5; $dnscounter++) {
		/* setup static routes for dns servers */
		$dnsgw = "dns{$dnscounter}gwint";
		if (isset($config['system'][$dnsgw])) {
			$interface = $config['system'][$dnsgw];
			if (($interface <> "") && ($interface <> "none")) {
				$gatewayip = get_interface_gateway($interface);
				if(is_ipaddr($gatewayip)) {
					/* dns server array starts at 0 */
					$dnscountermo = $dnscounter - 1;
					mwexec("route delete -host {$syscfg['dnsserver'][$dnscountermo]}", true);
					mwexec("route add -host {$syscfg['dnsserver'][$dnscountermo]} {$gatewayip}");
				}
			}
		}
	}
	
	return 0;
}

function get_searchdomains() {
	global $config, $g;

	$master_list = array();
	
	// Read in dhclient nameservers
	$search_list = glob("/var/etc/searchdomain_*");
	if (is_array($search_lists)) {
		foreach($search_lists as $fdns) {
			$contents = file($fdns, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
			if (!is_array($contents))
				continue;
			foreach ($contents as $dns) {
				if(is_hostname($dns)) 
					$master_list[] = $dns;
			}
		}
	}

	return $master_list;
}

function get_nameservers() {
	global $config, $g;
	$master_list = array();
	
	// Read in dhclient nameservers
	$dns_lists = glob("/var/etc/nameserver_*");
	if (is_array($dns_lists)) {
		foreach($dns_lists as $fdns) {
			$contents = file($fdns, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
			if (!is_array($contents))
				continue;
			foreach ($contents as $dns) {
				if(is_ipaddr($dns)) 
					$master_list[] = $dns;
			}
		}
	}

	// Read in any extra nameservers
	if(file_exists("/var/etc/nameservers.conf")) {
		$dns_s = file("/var/etc/nameservers.conf", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
		if(is_array($dns_s)) {
			foreach($dns_s as $dns)
				if (is_ipaddr($dns))
					$master_list[] = $dns;
		}
	}

	return $master_list;
}

function system_hosts_generate() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_hosts_generate() being called $mt\n";
	}

	$syscfg = $config['system'];
	$dnsmasqcfg = $config['dnsmasq'];

	if (!is_array($dnsmasqcfg['hosts'])) {
		$dnsmasqcfg['hosts'] = array();
	}
	$hostscfg = $dnsmasqcfg['hosts'];

	$hosts = "127.0.0.1	localhost localhost.{$syscfg['domain']}\n";

	if ($config['interfaces']['lan']) {
		$cfgip = get_interface_ip("lan");
		if (is_ipaddr($cfgip))
			$hosts .= "{$cfgip}	{$syscfg['hostname']}.{$syscfg['domain']} {$syscfg['hostname']}\n";
	} else {
		$sysiflist = get_configured_interface_list();
		foreach ($sysiflist as $sysif) {
			if (!interface_has_gateway($sysif)) {
				$cfgip = get_interface_ip($sysif);
				if (is_ipaddr($cfgip)) {
					$hosts .= "{$cfgip}	{$syscfg['hostname']}.{$syscfg['domain']} {$syscfg['hostname']}\n";
					break;
				}
			}
		}
	}

	foreach ($hostscfg as $host) {
		if ($host['host'])
			$hosts .= "{$host['ip']}	{$host['host']}.{$host['domain']} {$host['host']}\n";
		else
			$hosts .= "{$host['ip']}	{$host['domain']}\n";
	}
	if (isset($dnsmasqcfg['regdhcpstatic']) && is_array($config['dhcpd'])) {
		foreach ($config['dhcpd'] as $dhcpif => $dhcpifconf)
			if(is_array($dhcpifconf['staticmap']) && isset($dhcpifconf['enable']))
					foreach ($dhcpifconf['staticmap'] as $host)
						if ($host['ipaddr'] && $host['hostname'])
							$hosts .= "{$host['ipaddr']}	{$host['hostname']}.{$syscfg['domain']} {$host['hostname']}\n";
	}

	/*
	 * Do not remove this because dhcpleases monitors with kqueue it needs to be 
	 * killed before writing to hosts files.
	 */
	if (file_exists("{$g['varrun_path']}/dhcpleases.pid")) {
		sigkillbypid("{$g['varrun_path']}/dhcpleases.pid", "TERM");
                @unlink("{$g['varrun_path']}/dhcpleases.pid");
	}
	$fd = fopen("{$g['varetc_path']}/hosts", "w");
	if (!$fd) {
		log_error("Error: cannot open hosts file in system_hosts_generate().\n");
		return 1;
	}
	fwrite($fd, $hosts);
	fclose($fd);

	system_dhcpleases_configure();

	return 0;
}

function system_dhcpleases_configure() {
	global $config, $g;
	
	/* Start the monitoring process for dynamic dhcpclients. */
	if (isset($config['dnsmasq']['regdhcp'])) {
		/* Make sure we do not error out */
		@touch("{$g['dhcpd_chroot_path']}/var/db/dhcpd.leases");
		if (file_exists("{$g['varrun_path']}/dhcpleases.pid"))
				sigkillbypid("{$g['varrun_path']}/dhcpleases.pid", "HUP");
		else
			mwexec("/usr/local/sbin/dhcpleases -l {$g['dhcpd_chroot_path']}/var/db/dhcpd.leases -d {$config['system']['domain']} -p {$g['varrun_path']}/dnsmasq.pid -h {$g['varetc_path']}/hosts");
	} else {
		sigkillbypid("{$g['varrun_path']}/dhcpleases.pid", "TERM");
		@unlink("{$g['varrun_path']}/dhcpleases.pid");
	}
}

function system_hostname_configure() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_hostname_configure() being called $mt\n";
	}

	$syscfg = $config['system'];

	/* set hostname */
	$status = mwexec("/bin/hostname " .
		escapeshellarg("{$syscfg['hostname']}.{$syscfg['domain']}"));

    /* Setup host GUID ID.  This is used by ZFS. */
	mwexec("/etc/rc.d/hostid start");

	return $status;
}

function system_routing_configure($interface = "") {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_routing_configure() being called $mt\n";
	}

	$gatewayip = "";
	$interfacegw = "";
	$foundgw = false;
	/* tack on all the hard defined gateways as well */
	if (is_array($config['gateways']['gateway_item'])) {
		mwexec("/bin/rm {$g['tmp_path']}/*_defaultgw", true);
		foreach	($config['gateways']['gateway_item'] as $gateway) {
			if (isset($gateway['defaultgw'])) {
				if(strstr($gateway['gateway'], ":"))
					break;
				if ($gateway['gateway'] == "dynamic")
					$gateway['gateway'] = get_interface_gateway($gateway['interface']);
				$gatewayip = $gateway['gateway'];
				$interfacegw = $gateway['interface'];
				if (!empty($interfacegw)) {
					$defaultif = get_real_interface($gateway['interface']);
					if ($defaultif)
						@file_put_contents("{$g['tmp_path']}/{$defaultif}_defaultgw", $gatewayip);
				}
				$foundgw = true;
				break;
			}
		}
	}
	if ($foundgw == false) {
		$defaultif = get_real_interface("wan");
		$interfacegw = "wan";
		$gatewayip = get_interface_gateway("wan");
		@touch("{$g['tmp_path']}/{$defaultif}_defaultgw");
	}	
	$dont_add_route = false;
	/* if OLSRD is enabled, allow WAN to house DHCP. */
	if($config['installedpackages']['olsrd']) {
		foreach($config['installedpackages']['olsrd']['config'] as $olsrd) {
			if($olsrd['enabledyngw'] == "on") {
				$dont_add_route = true;
				break;
			}
		}
	}
	/* Create a array from the existing route table */
	exec("/usr/bin/netstat -rnf inet", $route_str);
	array_shift($route_str);
	array_shift($route_str);
	array_shift($route_str);
	array_shift($route_str);
	$route_arr = array();
	foreach($route_str as $routeline) {
		$items = preg_split("/[ ]+/i", $routeline);
		$route_arr[$items[0]] = array($items[0], $items[1], $items[5]);
	}

	if ($dont_add_route == false ) {
		if (!empty($interface) && $interface != $interfacegw)
			;
		else if (($interfacegw <> "bgpd") && (is_ipaddr($gatewayip))) {
			$action = "add";
			if(isset($route_arr['default'])) {
				$action = "change";
			}
			log_error("ROUTING: $action default route to $gatewayip");
			mwexec("/sbin/route {$action} -inet default " . escapeshellarg($gatewayip));
		}
	}

	if (is_array($config['staticroutes']['route'])) {
		$gateways_arr = return_gateways_array();

		foreach ($config['staticroutes']['route'] as $rtent) {
			$gatewayip = "";
			if (empty($gateways_arr[$rtent['gateway']])) {
				log_error("Static Routes: Gateway IP could not be found for {$rtent['network']}");
				continue;
			}
			$gateway = $gateways_arr[$rtent['gateway']];
			if (!empty($interface) && $interface != $gateway['friendlyiface'])
				continue;
			$gatewayip = $gateway['gateway'];
			$interfacegw = $gateway['interface'];
			$action = "add";
			if (isset($route_arr[$rtent['network']]))
				$action = "change";

			if (is_ipaddr($gatewayip)) {
				mwexec("/sbin/route {$action} -inet " . escapeshellarg($rtent['network']) .
					" " . escapeshellarg($gatewayip));
			} else if (!empty($interfacegw)) {
				mwexec("/sbin/route {$action} -inet " . escapeshellarg($rtent['network']) .
					" -iface " . escapeshellarg($interfacegw));
			}
		}
	}

	return 0;
}

function system_routing_enable() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_routing_enable() being called $mt\n";
	}

	return mwexec("/sbin/sysctl net.inet.ip.forwarding=1");
}

function system_syslogd_start() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_syslogd_start() being called $mt\n";
	}

	$syslogcfg = $config['syslog'];

	if ($g['booting'])
		echo "Starting syslog...";
	else
		killbypid("{$g['varrun_path']}/syslog.pid");

	if(is_process_running("syslogd"))
		mwexec("/usr/bin/killall -9 syslogd");
	if(is_process_running("fifolog_writer"))
		mwexec("/usr/bin/killall -9 fifolog_writer");
	
	// Define carious commands for logging
	$fifolog_create = "/usr/sbin/fifolog_create -s ";
	$fifolog_log = "|/usr/sbin/fifolog_writer ";
	$clog_create = "/usr/sbin/clog -i -s ";
	$clog_log = "%";

	// Which logging type are we using this week??
	if(isset($config['system']['usefifolog'])) {
		$log_directive = $fifolog_log;
		$log_create_directive = $fifolog_create;		
	} else { // Defaults to CLOG
		$log_directive = $clog_log;
		$log_create_directive = $clog_create;
	}
	
	if (isset($syslogcfg)) {
		$separatelogfacilities = array('ntpd','racoon','openvpn','pptps','poes','l2tps');
		if($config['installedpackages']['package']) {
			foreach($config['installedpackages']['package'] as $package) {
				if($package['logging']) {
					array_push($separatelogfacilities, $package['logging']['facilityname']);
					mwexec("{$log_create_directive} 10240 {$g['varlog_path']}/{$package['logging']['logfilename']}");
					$syslogconf .= "!{$package['logging']['facilityname']}\n*.*\t\t\t\t\t\t {$log_directive}{$g['varlog_path']}/{$package['logging']['logfilename']}\n";
				}
			}
		}
		$facilitylist = implode(',', array_unique($separatelogfacilities));
		/* write syslog.conf */		
		$fd = fopen("{$g['varetc_path']}/syslog.conf", "w");
		if (!$fd) {
			printf("Error: cannot open syslog.conf in system_syslogd_start().\n");
			return 1;
		}
		$syslogconf .= "!ntpdate,!ntpd\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/ntpd.log\n";
		$syslogconf .= "!ppp\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/ppp.log\n";
		$syslogconf .= "!pptps\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/pptps.log\n";
		$syslogconf .= "!poes\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/poes.log\n";
		$syslogconf .= "!l2tps\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/l2tps.log\n";
		$syslogconf .= "!racoon\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/ipsec.log\n";
		if (isset($syslogcfg['vpn'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= "*.*					 @{$syslogcfg['remoteserver']}\n";
			if($syslogcfg['remoteserver2'])
				$syslogconf .= "*.*					 @{$syslogcfg['remoteserver2']}\n";
			if($syslogcfg['remoteserver3'])
				$syslogconf .= "*.*					 @{$syslogcfg['remoteserver3']}\n";
		}
		$syslogconf .= "!openvpn\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/openvpn.log\n";
		if (isset($syslogcfg['vpn'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= "*.*					 @{$syslogcfg['remoteserver']}\n";
			if($syslogcfg['remoteserver2'])
				$syslogconf .= "*.*					 @{$syslogcfg['remoteserver3']}\n";
			if($syslogcfg['remoteserver3'])
				$syslogconf .= "*.*					 @{$syslogcfg['remoteserver3']}\n";
		}
		$syslogconf .= "!apinger\n";
		if (!isset($syslogcfg['disablelocallogging']))
			$syslogconf .= "*.*					 {$log_directive}{$g['varlog_path']}/apinger.log\n";
		$syslogconf .= "!relayd\n";
		$syslogconf .= "*.* 						{$log_directive}{$g['varlog_path']}/relayd.log\n";
		$syslogconf .= "!-{$facilitylist}\n";
		if (!isset($syslogcfg['disablelocallogging'])) 
			$syslogconf .= <<<EOD
local0.*										 {$log_directive}{$g['varlog_path']}/filter.log
local3.*										 {$log_directive}{$g['varlog_path']}/vpn.log
local4.*										 {$log_directive}{$g['varlog_path']}/portalauth.log
local7.*										 {$log_directive}{$g['varlog_path']}/dhcpd.log
*.notice;kern.debug;lpr.info;mail.crit; 		 {$log_directive}{$g['varlog_path']}/system.log
news.err;local0.none;local3.none;local4.none; 	 {$log_directive}{$g['varlog_path']}/system.log
local7.none										 {$log_directive}{$g['varlog_path']}/system.log
security.*										 {$log_directive}{$g['varlog_path']}/system.log
auth.info;authpriv.info;daemon.info				 {$log_directive}{$g['varlog_path']}/system.log
auth.info;authpriv.info 						 |exec /usr/local/sbin/sshlockout_pf 15
*.emerg											 *

EOD;
		if (isset($syslogcfg['filter'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= "local0.*			 @{$syslogcfg['remoteserver']}\n";
			if($syslogcfg['remoteserver2'])
				$syslogconf .= "local0.*			 @{$syslogcfg['remoteserver2']}\n";
			if($syslogcfg['remoteserver3'])
				$syslogconf .= "local0.*			 @{$syslogcfg['remoteserver3']}\n";

		}
		if (isset($syslogcfg['vpn'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= "local3.*			 @{$syslogcfg['remoteserver']}\n";
			if($syslogcfg['remoteserver2'])
				$syslogconf .= "local3.*			 @{$syslogcfg['remoteserver2']}\n";
			if($syslogcfg['remoteserver3'])
				$syslogconf .= "local3.*			 @{$syslogcfg['remoteserver3']}\n";
		}
		if (isset($syslogcfg['portalauth'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= "local4.*			 @{$syslogcfg['remoteserver']}\n";
			if($syslogcfg['remoteserver2'])
				$syslogconf .= "local4.*			 @{$syslogcfg['remoteserver2']}\n";
			if($syslogcfg['remoteserver3'])
				$syslogconf .= "local4.*			 @{$syslogcfg['remoteserver3']}\n";
		}
		if (isset($syslogcfg['dhcp'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= "local7.*			 @{$syslogcfg['remoteserver']}\n";
			if($syslogcfg['remoteserver2'])
				$syslogconf .= "local7.*			 @{$syslogcfg['remoteserver2']}\n";
			if($syslogcfg['remoteserver3'])
				$syslogconf .= "local7.*			 @{$syslogcfg['remoteserver3']}\n";
		}
		if (isset($syslogcfg['system'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= <<<EOD
*.notice;kern.debug;lpr.info;mail.crit;			 @{$syslogcfg['remoteserver']}
news.err;local0.none;local3.none;local7.none	 @{$syslogcfg['remoteserver']}
security.*										 @{$syslogcfg['remoteserver']}
auth.info;authpriv.info;daemon.info				 @{$syslogcfg['remoteserver']}
*.emerg											 @{$syslogcfg['remoteserver']}

EOD;

}

		if (isset($syslogcfg['system'])) {
			if($syslogcfg['remoteserver2'])
				$syslogconf .= <<<EOD
*.notice;kern.debug;lpr.info;mail.crit;			 @{$syslogcfg['remoteserver2']}
news.err;local0.none;local3.none;local7.none	 @{$syslogcfg['remoteserver2']}
security.*										 @{$syslogcfg['remoteserver2']}
auth.info;authpriv.info;daemon.info				 @{$syslogcfg['remoteserver2']}
*.emerg											 @{$syslogcfg['remoteserver2']}

EOD;

}

		if (isset($syslogcfg['system'])) {
			if($syslogcfg['remoteserver3'])
				$syslogconf .= <<<EOD
*.notice;kern.debug;lpr.info;mail.crit;			 @{$syslogcfg['remoteserver3']}
news.err;local0.none;local3.none;local7.none	 @{$syslogcfg['remoteserver3']}
security.*										 @{$syslogcfg['remoteserver3']}
auth.info;authpriv.info;daemon.info				 @{$syslogcfg['remoteserver3']}
*.emerg											 @{$syslogcfg['remoteserver3']}

EOD;

}
		if (isset($syslogcfg['logall'])) {
			if($syslogcfg['remoteserver'])
				$syslogconf .= <<<EOD
*.*								@{$syslogcfg['remoteserver']}

EOD;

			if($syslogcfg['remoteserver2'])
				$syslogconf .= <<<EOD
*.*								@{$syslogcfg['remoteserver2']}

EOD;

			if($syslogcfg['remoteserver3'])
				$syslogconf .= <<<EOD
*.*								@{$syslogcfg['remoteserver3']}

EOD;

}
		fwrite($fd, $syslogconf);
		fclose($fd);

		// Ensure that the log directory exists
		if(!is_dir("{$g['dhcpd_chroot_path']}/var/run"))
			exec("/bin/mkdir -p {$g['dhcpd_chroot_path']}/var/run");

		// Are we logging to a least one remote server ?
		if(strpos($syslogconf, "@") != false)
			$retval = system("/usr/sbin/syslogd -c -c -l /var/dhcpd/var/run/log -f {$g['varetc_path']}/syslog.conf");
		else
			$retval = system("/usr/sbin/syslogd -c -c -l /var/dhcpd/var/run/log -f {$g['varetc_path']}/syslog.conf");

	} else {
		$retval = mwexec("/usr/sbin/syslogd -c -c -l /var/dhcpd/var/run/log");
	}

	if ($g['booting'])
		echo "done.\n";

	return $retval;
}

function system_pccard_start() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_pccard_start() being called $mt\n";
	}

	if ($g['booting'])
		echo "Initializing PCMCIA...";

	/* kill any running pccardd */
	killbypid("{$g['varrun_path']}/pccardd.pid");

	/* fire up pccardd */
	$res = mwexec("/usr/sbin/pccardd -z -f {$g['etc_path']}/pccard.conf");

	if ($g['booting']) {
		if ($res == 0)
			echo "done.\n";
		else
			echo "failed!\n";
	}

	return $res;
}


function system_webgui_start() {
	global $config, $g;

	if ($g['booting'])
		echo "Starting webConfigurator...";

	/* kill any running lighttpd */
	killbypid("{$g['varrun_path']}/lighty-webConfigurator.pid");

	sleep(1);

	chdir($g['www_path']);

	/* defaults */
	$portarg = "80";
	$crt = "";
	$key = "";
	$ca = "";

	/* non-standard port? */
	if (isset($config['system']['webgui']['port']) && $config['system']['webgui']['port'] <> "")
		$portarg = "{$config['system']['webgui']['port']}";

	if ($config['system']['webgui']['protocol'] == "https") {
		// Ensure that we have a webConfigurator CERT
		$cert =& lookup_cert($config['system']['webgui']['ssl-certref']);
		if(!is_array($cert) && !$cert['crt'] && !$cert['prv']) {
			if (!is_array($config['ca']))
				$config['ca'] = array();
			$a_ca =& $config['ca'];
			if (!is_array($config['cert']))
				$config['cert'] = array();
			$a_cert =& $config['cert'];
			log_error("Creating SSL Certificate for this host");
			$cert = array();
			$cert['refid'] = uniqid();
			$cert['descr'] = "webConfigurator default";
			mwexec("/usr/bin/openssl genrsa 1024 > {$g['tmp_path']}/ssl.key");
			mwexec("/usr/bin/openssl req -new -x509 -nodes -sha1 -days 2000 -key {$g['tmp_path']}/ssl.key > {$g['tmp_path']}/ssl.crt");
			$crt = file_get_contents("{$g['tmp_path']}/ssl.crt");
			$key = file_get_contents("{$g['tmp_path']}/ssl.key");
			unlink("{$g['tmp_path']}/ssl.key");
			unlink("{$g['tmp_path']}/ssl.crt");
			cert_import($cert, $crt, $key);
			$a_cert[] = $cert;
			$config['system']['webgui']['ssl-certref'] = $cert['refid'];
			write_config("Importing HTTPS certificate");
			if(!$config['system']['webgui']['port'])
				$portarg = "443";
			$ca = ca_chain($cert);
		} else {
			$crt = base64_decode($cert['crt']);
			$key = base64_decode($cert['prv']);
			if(!$config['system']['webgui']['port'])
				$portarg = "443";
			$ca = ca_chain($cert);
		}
	}

	/* generate lighttpd configuration */
	system_generate_lighty_config("{$g['varetc_path']}/lighty-webConfigurator.conf",
		$crt, $key, $ca, "lighty-webConfigurator.pid", $portarg, "/usr/local/www/");

	/* attempt to start lighthttpd */
	$res = mwexec("/usr/local/sbin/lighttpd -f {$g['varetc_path']}/lighty-webConfigurator.conf");

	/* fetch page to preload apc cache */
	$proto = "http";
	if ($config['system']['webgui']['protocol'])
		$proto = $config['system']['webgui']['protocol'];
	mwexec_bg("/usr/bin/fetch -o /dev/null -q {$proto}://localhost:{$portarg}/preload.php");

	if ($g['booting']) {
		if ($res == 0)
			echo "done.\n";
		else
			echo "failed!\n";
	}

	return $res;
}

function system_generate_lighty_config($filename,
	$cert,
	$key,
	$ca,
	$pid_file,
	$port = 80,
	$document_root = "/usr/local/www/",
	$cert_location = "cert.pem",
	$ca_location = "ca.pem",
	$max_procs = 2,
	$max_requests = "2",
	$fast_cgi_enable = true,
	$captive_portal = false) {

	global $config, $g;

	if(!is_dir("{$g['tmp_path']}/lighttpdcompress"))
		mkdir("{$g['tmp_path']}/lighttpdcompress");

	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_generate_lighty_config() being called $mt\n";
	}

	if($captive_portal == true)  {
		$captiveportal = ",\"mod_rewrite\"";
		$captive_portal_rewrite = "url.rewrite-once = ( \"(.*captiveportal.*)\" => \"$1\", \"(.*)\" => \"/index.php?redirurl=$1\" )\n";
		$captive_portal_module = "";
		$maxprocperip = $config['captiveportal']['maxprocperip'];
		if(!$maxprocperip and $maxprocperip > 0)
			$captive_portal_mod_evasive = "evasive.max-conns-per-ip = {$maxprocperip}";
		else
			$captive_portal_mod_evasive = "";
		$server_upload_dirs = "server.upload-dirs = ( \"{$g['tmp_path']}/captiveportal/\" )\n";
		exec("mkdir -p {$g['tmp_path']}/captiveportal");
		exec("chmod a-w {$g['tmp_path']}/captiveportal");
		$server_max_request_size = "server.max-request-size    = 384";
	} else {
		$captiveportal = "";
		$captive_portal_rewrite = "";
		$captive_portal_module = "";
		$captive_portal_mod_evasive = "";
		$server_upload_dirs = "server.upload-dirs = ( \"{$g['upload_path']}/\", \"{$g['tmp_path']}/\", \"/var/\" )\n";
		$server_max_request_size = "server.max-request-size    = 2097152";
	}
	
	if($port <> "")
		$lighty_port = $port;
	else
		$lighty_port = "80";

	$memory = get_memory();
	$avail = $memory[0];

	if($avail > 0 and $avail < 65) {
		$fast_cgi_enable = false;
	}

	// Ramp up captive portal max procs
	if($captive_portal == true)  {
		if($avail > 65 and $avail < 98) {
			$max_procs = 1;
		}
		if($avail > 97 and $avail < 128) {
			$max_procs = 2;
		}
		if($avail > 127 and $avail < 256) {
			$max_procs = 3;
		}
		if($avail > 255 and $avail < 384) {
			$max_procs = 4;
		}
		if($avail > 383) {
			$max_procs = 5;
		}
	}

	if($captive_portal == true)  {	
		$bin_environment =  <<<EOC
        "bin-environment" => (
           "PHP_FCGI_CHILDREN" => "$max_procs",
           "PHP_FCGI_MAX_REQUESTS" => "500"
        ), 
EOC;

	} else if ($avail > 0 and $avail < 128) {
		$bin_environment = <<<EOC
		"bin-environment" => (
			"PHP_FCGI_CHILDREN" => "$max_procs",
			"PHP_FCGI_MAX_REQUESTS" => "2",
	),

EOC;
	} else
		$bin_environment =  <<<EOC
        "bin-environment" => (
           "PHP_FCGI_CHILDREN" => "$max_procs",
           "PHP_FCGI_MAX_REQUESTS" => "500"
        ), 
EOC;

	if($fast_cgi_enable == true) {
		$module = "\"mod_fastcgi\", \"mod_cgi\"";
		$cgi_config = "";
		$fastcgi_config = <<<EOD
#### fastcgi module
## read fastcgi.txt for more info
fastcgi.server = ( ".php" =>
	( "localhost" =>
		(
			"socket" => "{$g['tmp_path']}/php-fastcgi.socket",
			"min-procs" => 0,
			"max-procs" => {$max_procs},
			{$bin_environment}			
			"bin-path" => "/usr/local/bin/php"
		)
	)
)

#### CGI module
cgi.assign                 = ( ".cgi" => "" )

EOD;
	} else {
		$fastcgi_config = "";
		$module = "\"mod_cgi\"";
		$cgi_config = <<<EOD
#### CGI module
cgi.assign                 = ( ".php"  => "/usr/local/bin/php",
                               ".cgi" => "" )

EOD;
	}

	$lighty_config = "";
	$lighty_config .= <<<EOD
#
# lighttpd configuration file
#
# use a it as base for lighttpd 1.0.0 and above
#
############ Options you really have to take care of ####################

## FreeBSD!
server.event-handler	= "freebsd-kqueue"
server.network-backend 	= "writev"

## modules to load
server.modules              =   (
									{$captive_portal_module}
									"mod_access", "mod_accesslog", "mod_expire", "mod_compress", "mod_redirect",
									{$module}{$captiveportal}
								)

## Unused modules
#                               "mod_setenv",
#                               "mod_rewrite",
#                               "mod_ssi",
#                               "mod_usertrack",
#                               "mod_expire",
#                               "mod_secdownload",
#                               "mod_rrdtool",
#                               "mod_auth",
#                               "mod_status",
#                               "mod_alias",
#                               "mod_proxy",
#                               "mod_simple_vhost",
#                               "mod_evhost",
#                               "mod_userdir",
#                               "mod_cgi",

server.max-keep-alive-requests = 15
server.max-keep-alive-idle = 30

## a static document-root, for virtual-hosting take look at the
## server.virtual-* options
server.document-root        = "{$document_root}"
{$captive_portal_rewrite}

# Maximum idle time with nothing being written (php downloading)
server.max-write-idle = 999

## where to send error-messages to
server.errorlog             = "/var/log/lighttpd.error.log"

# files to check for if .../ is requested
server.indexfiles           = ( "index.php", "index.html",
                                "index.htm", "default.htm" )

# mimetype mapping
mimetype.assign             = (
  ".pdf"          =>      "application/pdf",
  ".sig"          =>      "application/pgp-signature",
  ".spl"          =>      "application/futuresplash",
  ".class"        =>      "application/octet-stream",
  ".ps"           =>      "application/postscript",
  ".torrent"      =>      "application/x-bittorrent",
  ".dvi"          =>      "application/x-dvi",
  ".gz"           =>      "application/x-gzip",
  ".pac"          =>      "application/x-ns-proxy-autoconfig",
  ".swf"          =>      "application/x-shockwave-flash",
  ".tar.gz"       =>      "application/x-tgz",
  ".tgz"          =>      "application/x-tgz",
  ".tar"          =>      "application/x-tar",
  ".zip"          =>      "application/zip",
  ".mp3"          =>      "audio/mpeg",
  ".m3u"          =>      "audio/x-mpegurl",
  ".wma"          =>      "audio/x-ms-wma",
  ".wax"          =>      "audio/x-ms-wax",
  ".ogg"          =>      "audio/x-wav",
  ".wav"          =>      "audio/x-wav",
  ".gif"          =>      "image/gif",
  ".jpg"          =>      "image/jpeg",
  ".jpeg"         =>      "image/jpeg",
  ".png"          =>      "image/png",
  ".xbm"          =>      "image/x-xbitmap",
  ".xpm"          =>      "image/x-xpixmap",
  ".xwd"          =>      "image/x-xwindowdump",
  ".css"          =>      "text/css",
  ".html"         =>      "text/html",
  ".htm"          =>      "text/html",
  ".js"           =>      "text/javascript",
  ".asc"          =>      "text/plain",
  ".c"            =>      "text/plain",
  ".conf"         =>      "text/plain",
  ".text"         =>      "text/plain",
  ".txt"          =>      "text/plain",
  ".dtd"          =>      "text/xml",
  ".xml"          =>      "text/xml",
  ".mpeg"         =>      "video/mpeg",
  ".mpg"          =>      "video/mpeg",
  ".mov"          =>      "video/quicktime",
  ".qt"           =>      "video/quicktime",
  ".avi"          =>      "video/x-msvideo",
  ".asf"          =>      "video/x-ms-asf",
  ".asx"          =>      "video/x-ms-asf",
  ".wmv"          =>      "video/x-ms-wmv",
  ".bz2"          =>      "application/x-bzip",
  ".tbz"          =>      "application/x-bzip-compressed-tar",
  ".tar.bz2"      =>      "application/x-bzip-compressed-tar"
 )

# Use the "Content-Type" extended attribute to obtain mime type if possible
#mimetypes.use-xattr        = "enable"

#### accesslog module
#accesslog.filename          = "/dev/null"

## deny access the file-extensions
#
# ~    is for backupfiles from vi, emacs, joe, ...
# .inc is often used for code includes which should in general not be part
#      of the document-root
url.access-deny             = ( "~", ".inc" )


######### Options that are good to be but not neccesary to be changed #######

## bind to port (default: 80)
server.port                = {$lighty_port}

## error-handler for status 404
#server.error-handler-404   = "/error-handler.html"
#server.error-handler-404   = "/error-handler.php"

## to help the rc.scripts
server.pid-file            = "/var/run/{$pid_file}"

## virtual directory listings
server.dir-listing         = "disable"

## enable debugging
debug.log-request-header   = "disable"
debug.log-response-header  = "disable"
debug.log-request-handling = "disable"
debug.log-file-not-found   = "disable"

# gzip compression
compress.cache-dir = "{$g['tmp_path']}/lighttpdcompress/"
compress.filetype  = ("text/plain","text/css", "text/xml", "text/javascript" )

{$server_upload_dirs}

{$server_max_request_size}

{$fastcgi_config}

{$cgi_config}

{$captive_portal_mod_evasive}

expire.url = (
				"" => "access 50 hours",	
        )

EOD;

	$cert = str_replace("\r", "", $cert);
	$key = str_replace("\r", "", $key);
	$ca = str_replace("\r", "", $ca);

	$cert = str_replace("\n\n", "\n", $cert);
	$key = str_replace("\n\n", "\n", $key);
	$ca = str_replace("\n\n", "\n", $ca);

	if($cert <> "" and $key <> "") {
		$fd = fopen("{$g['varetc_path']}/{$cert_location}", "w");
		if (!$fd) {
			printf("Error: cannot open cert.pem in system_webgui_start().\n");
			return 1;
		}
		chmod("{$g['varetc_path']}/{$cert_location}", 0600);
		fwrite($fd, $cert);
		fwrite($fd, "\n");
		fwrite($fd, $key);
		fclose($fd);
		if(!(empty($ca) || (strlen(trim($ca)) == 0))) {
			$fd = fopen("{$g['varetc_path']}/{$ca_location}", "w");
			if (!$fd) {
				printf("Error: cannot open ca.pem in system_webgui_start().\n");
				return 1;
			}
			chmod("{$g['varetc_path']}/{$ca_location}", 0600);
			fwrite($fd, $ca);
			fclose($fd);
		}
		$lighty_config .= "\n";
		$lighty_config .= "## ssl configuration\n";
		$lighty_config .= "ssl.engine = \"enable\"\n";
		$lighty_config .= "ssl.pemfile = \"{$g['varetc_path']}/{$cert_location}\"\n\n";
		if(!(empty($ca) || (strlen(trim($ca)) == 0)))
			$lighty_config .= "ssl.ca-file = \"{$g['varetc_path']}/{$ca_location}\"\n\n";
	}

	// Add HTTP to HTTPS redirect	
	if ($captive_portal == false && $config['system']['webgui']['protocol'] == "https" && !isset($config['system']['webgui']['disablehttpredirect'])) {
		if($lighty_port != "443") 
			$redirectport = ":{$lighty_port}";
		$lighty_config .= <<<EOD
\$SERVER["socket"] == ":80" {
	\$HTTP["host"] =~ "(.*)" {
		url.redirect = ( "^/(.*)" => "https://%1{$redirectport}/$1" )
	}
}
EOD;
	}

	$fd = fopen("{$filename}", "w");
	if (!$fd) {
		printf("Error: cannot open {$filename} in system_generate_lighty_config().\n");
		return 1;
	}
	fwrite($fd, $lighty_config);
	fclose($fd);

	return 0;

}

function system_timezone_configure() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_timezone_configure() being called $mt\n";
	}

	$syscfg = $config['system'];

	if ($g['booting'])
		echo "Setting timezone...";

	/* extract appropriate timezone file */
	$timezone = $syscfg['timezone'];
	if (!$timezone)
		$timezone = "Etc/UTC";

	conf_mount_rw();

	exec("LANG=C /usr/bin/tar xzfO /usr/share/zoneinfo.tgz " .
		escapeshellarg($timezone) . " > /etc/localtime");

	mwexec("sync");
	conf_mount_ro();

	if ($g['booting'])
		echo "done.\n";
}

function system_ntp_configure() {
	global $config, $g;

	$ntpcfg = "# \n";
	$ntpcfg .= "# pfSense OpenNTPD configuration file \n";
	$ntpcfg .= "# \n\n";

	/* foreach through servers and write out to ntpd.conf */
	foreach (explode(' ', $config['system']['timeservers']) as $ts)
		$ntpcfg .= "servers {$ts}\n";

	/* Setup listener(s) if the user has configured one */
        if ($config['installedpackages']['openntpd']) {
    		/* server config is in coregui1 */
		$xmlsettings = $config['installedpackages']['openntpd']['config'][0];
		if ($xmlsettings['enable'] == 'on') {
			$ifaces = explode(',', $xmlsettings['interface']);
			$ifaces = array_map('get_real_interface', $ifaces);
			$ifaces = array_filter($ifaces, 'does_interface_exist');
			$ips = array_map('find_interface_ip', $ifaces);
			foreach ($ips as $ip) {
				if (is_ipaddr($ip))
					$ntpdcfg .= "listen on $ip\n";
			}
		}
	}
	$ntpdcfg .= "\n";

	/* open configuration for wrting or bail */
	$fd = fopen("{$g['varetc_path']}/ntpd.conf","w");
	if(!$fd) {
		log_error("Could not open {$g['varetc_path']}/ntpd.conf for writing");
		return;
	}
	fwrite($fd, $ntpcfg);

	/* slurp! */
	fclose($fd);

	/* if openntpd is running, kill it */
	while(is_process_running("ntpd")) {
		killbyname("ntpd");
	}

	/* if /var/empty does not exist, create it */
	if(!is_dir("/var/empty"))
		exec("/bin/mkdir -p /var/empty && chmod ug+rw /var/empty/.");

	if ($g['booting'])
		return;

	/* start opentpd, set time now and use /var/etc/ntpd.conf */
	exec("/usr/local/sbin/ntpd -s -f {$g['varetc_path']}/ntpd.conf");
	
	// Note that we are starting up
	exec("echo 'OpenNTPD is starting up' >> {$g['varlog_path']}/ntpd.log");

}

function sync_system_time() {
	global $config, $g;

	if ($g['booting'])
		echo "Syncing system time before startup...";

	/* foreach through servers and write out to ntpd.conf */
	foreach (explode(' ', $config['system']['timeservers']) as $ts) {
		mwexec("/usr/sbin/ntpdate -s $ts");
	}
	
	if ($g['booting'])
		echo "done.\n";
	
}

function system_halt() {
	global $g;

	system_reboot_cleanup();

	mwexec("/usr/bin/nohup /etc/rc.halt > /dev/null 2>&1 &");
}

function system_reboot() {
	global $g;

	system_reboot_cleanup();

	mwexec("nohup /etc/rc.reboot > /dev/null 2>&1 &");
}

function system_reboot_sync() {
	global $g;

	system_reboot_cleanup();

	mwexec("/etc/rc.reboot > /dev/null 2>&1");
}

function system_reboot_cleanup() {
	mwexec("/usr/local/bin/beep.sh stop");
	require_once("captiveportal.inc");
	captiveportal_radius_stop_all();
	require_once("voucher.inc");
	voucher_save_db_to_config();
}

function system_do_shell_commands($early = 0) {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_do_shell_commands() being called $mt\n";
	}

	if ($early)
		$cmdn = "earlyshellcmd";
	else
		$cmdn = "shellcmd";

	if (is_array($config['system'][$cmdn])) {

		/* *cmd is an array, loop through */
		foreach ($config['system'][$cmdn] as $cmd) {
			exec($cmd);
		}

	} elseif($config['system'][$cmdn] <> "") {

		/* execute single item */
		exec($config['system'][$cmdn]);

	}
}

function system_console_configure() {
	global $config, $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_console_configure() being called $mt\n";
	}

	if (isset($config['system']['disableconsolemenu'])) {
		touch("{$g['varetc_path']}/disableconsole");
	} else {
		unlink_if_exists("{$g['varetc_path']}/disableconsole");
	}
}

function system_dmesg_save() {
	global $g;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_dmesg_save() being called $mt\n";
	}

	$dmesg = "";
	exec("/sbin/dmesg", $dmesg);

	/* find last copyright line (output from previous boots may be present) */
	$lastcpline = 0;

	for ($i = 0; $i < count($dmesg); $i++) {
		if (strstr($dmesg[$i], "Copyright (c) 1992-"))
			$lastcpline = $i;
	}

	$fd = fopen("{$g['varlog_path']}/dmesg.boot", "w");
	if (!$fd) {
		printf("Error: cannot open dmesg.boot in system_dmesg_save().\n");
		return 1;
	}

	for ($i = $lastcpline; $i < count($dmesg); $i++)
		fwrite($fd, $dmesg[$i] . "\n");

	fclose($fd);

	return 0;
}

function system_set_harddisk_standby() {
	global $g, $config;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_set_harddisk_standby() being called $mt\n";
	}

	if (isset($config['system']['harddiskstandby'])) {
		if ($g['booting']) {
			echo 'Setting hard disk standby... ';
		}

		$standby = $config['system']['harddiskstandby'];
		// Check for a numeric value
		if (is_numeric($standby)) {
			// Sync the disk(s)
			pfSense_sync();
			if (!mwexec('/sbin/sysctl hw.ata.standby=' . ((int)$standby))) {
				// Reinitialize ATA-drives
				mwexec('/usr/local/sbin/atareinit');
				if ($g['booting']) {
					echo "done.\n";
				}
			} else if ($g['booting']) {
				echo "failed!\n";
			}
		} else if ($g['booting']) {
			echo "failed!\n";
		}
	}
}

function system_setup_sysctl() {
	global $config;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_setup_sysctl() being called $mt\n";
	}

	activate_sysctls();	

	if (isset($config['system']['sharednet'])) {
		system_disable_arp_wrong_if();
	}
}

function system_disable_arp_wrong_if() {
	global $config;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_disable_arp_wrong_if() being called $mt\n";
	}
	mwexec("/sbin/sysctl -n net.link.ether.inet.log_arp_wrong_iface=0");
	mwexec("/sbin/sysctl -n net.link.ether.inet.log_arp_movements=0");
}

function system_enable_arp_wrong_if() {
	global $config;
	if(isset($config['system']['developerspew'])) {
		$mt = microtime();
		echo "system_enable_arp_wrong_if() being called $mt\n";
	}
	mwexec("/sbin/sysctl -n net.link.ether.inet.log_arp_wrong_iface=1");
	mwexec("/sbin/sysctl -n net.link.ether.inet.log_arp_movements=1");
}

function enable_watchdog() {
	global $config;
	return;
	$install_watchdog = false;
	$supported_watchdogs = array("Geode");
	$file = file_get_contents("/var/log/dmesg.boot");
	foreach($supported_watchdogs as $sd) {
		if(stristr($file, "Geode")) {
			$install_watchdog = true;
		}
	}
	if($install_watchdog == true) {
		if(is_process_running("watchdogd"))
			mwexec("/usr/bin/killall watchdogd", true);
		exec("/usr/sbin/watchdogd");
	}
}

function system_check_reset_button() {
	global $g;
	if($g['platform'] != "nanobsd")
		return 0;

	$specplatform = system_identify_specific_platform();

	if ($specplatform['name'] != "wrap" && $specplatform['name'] != "alix")
		return 0;

	$retval = mwexec("/usr/local/sbin/" . $specplatform['name'] . "resetbtn");

	if ($retval == 99) {
		/* user has pressed reset button for 2 seconds - 
		   reset to factory defaults */
		echo <<<EOD

***********************************************************************
* Reset button pressed - resetting configuration to factory defaults. *
* The system will reboot after this completes.                        *
***********************************************************************


EOD;
		
		reset_factory_defaults();
		system_reboot_sync();
		exit(0);
	}

	return 0;
}

/* attempt to identify the specific platform (for embedded systems)
   Returns an array with two elements:
	name => platform string (e.g. 'wrap', 'alix' etc.)
	descr => human-readable description (e.g. "PC Engines WRAP")
*/
function system_identify_specific_platform() {
	global $g;
	
	if ($g['platform'] == 'generic-pc')
		return array('name' => 'generic-pc', 'descr' => "Generic PC");
	
	if ($g['platform'] == 'generic-pc-cdrom')
		return array('name' => 'generic-pc-cdrom', 'descr' => "Generic PC (CD-ROM)");
	
	/* the rest of the code only deals with 'embedded' platforms */
	if ($g['platform'] != 'nanobsd')
		return array('name' => $g['platform'], 'descr' => $g['platform']);
	
	$dmesg = system_get_dmesg_boot();
	
	if (strpos($dmesg, "PC Engines WRAP") !== false)
		return array('name' => 'wrap', 'descr' => 'PC Engines WRAP');
	
	if (strpos($dmesg, "PC Engines ALIX") !== false)
		return array('name' => 'alix', 'descr' => 'PC Engines ALIX');

	if (preg_match("/Soekris net45../", $dmesg, $matches))
		return array('name' => 'net45xx', 'descr' => $matches[0]);
	
	if (preg_match("/Soekris net48../", $dmesg, $matches))
		return array('name' => 'net48xx', 'descr' => $matches[0]);
		
	if (preg_match("/Soekris net55../", $dmesg, $matches))
		return array('name' => 'net55xx', 'descr' => $matches[0]);
	
	/* unknown embedded platform */
	return array('name' => 'embedded', 'descr' => 'embedded (unknown)');
}

function system_get_dmesg_boot() {
	global $g;
		
	return file_get_contents("{$g['varlog_path']}/dmesg.boot");
}

?>