pfSense

<?php

/*

	services.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.

*/

/* include all configuration functions */

require_once("functions.inc");

function services_dhcpd_configure() {

	global $config, $g;

	/* kill any running dhcpd */

	killbypid("{$g['varrun_path']}/dhcpd.pid");

	$syscfg = $config['system'];

	$dhcpdcfg = $config['dhcpd'];

	/* DHCP enabled on any interfaces? */

	$dhcpdenable = false;

	foreach ($dhcpdcfg as $dhcpif => $dhcpifconf) {

		if (isset($dhcpifconf['enable']) &&

			(($dhcpif == "lan") ||

			(isset($config['interfaces'][$dhcpif]['enable']) &&

			$config['interfaces'][$dhcpif]['if'] && (!$config['interfaces'][$dhcpif]['bridge']))))

			$dhcpdenable = true;

	}

	if (!$dhcpdenable)

		return 0;

	if ($g['booting'])

		echo "Starting DHCP service... ";

	else

		sleep(1);

	/* write dhcpd.conf */

	$fd = fopen("{$g['varetc_path']}/dhcpd.conf", "w");

	if (!$fd) {

		printf("Error: cannot open dhcpd.conf in services_dhcpd_configure().\n");

		return 1;

	}

	$dhcpdconf = <<<EOD

option domain-name "{$syscfg['domain']}";

default-lease-time 7200;

max-lease-time 86400;

authoritative;

log-facility local7;

ddns-update-style none;

EOD;

	$dhcpdifs = array();

	foreach ($dhcpdcfg as $dhcpif => $dhcpifconf) {

		$ifcfg = $config['interfaces'][$dhcpif];

		if (!isset($dhcpifconf['enable']) ||

			(($dhcpif != "lan") &&

			(!isset($ifcfg['enable']) || !$ifcfg['if'] || $ifcfg['bridge'])))

			continue;

		$subnet = gen_subnet($ifcfg['ipaddr'], $ifcfg['subnet']);

		$subnetmask = gen_subnet_mask($ifcfg['subnet']);

		$dnscfg = "";

		if ($dhcpifconf['domain']) {

			$dnscfg .= "	option domain-name \"{$dhcpifconf['domain']}\";\n";

		}

		if (is_array($dhcpifconf['dnsserver']) && ($dhcpifconf['dnsserver'][0])) {

			$dnscfg .= "	option domain-name-servers " . join(",", $dhcpifconf['dnsserver']) . ";";

		} else if (isset($config['dnsmasq']['enable'])) {

			$dnscfg .= "	option domain-name-servers " . $ifcfg['ipaddr'] . ";";

		} else if (is_array($syscfg['dnsserver']) && ($syscfg['dnsserver'][0])) {

			$dnscfg .= "	option domain-name-servers " . join(",", $syscfg['dnsserver']) . ";";

		}

		$dhcpdconf .= "subnet $subnet netmask $subnetmask {\n";

		$dhcpdconf .= "	pool {\n";

		if (isset($dhcpifconf['denyunknown']))

		   $dhcpdconf .= "		deny unknown clients;\n";

		if ($dhcpifconf['gateway'])

			$routers = $dhcpifconf['gateway'];

		else

			$routers = $ifcfg['ipaddr'];

		$dhcpdconf .= <<<EOD

		range {$dhcpifconf['range']['from']} {$dhcpifconf['range']['to']};

	}

	option routers {$routers};

$dnscfg

EOD;

		if ($dhcpifconf['defaultleasetime'])

			$dhcpdconf .= "	default-lease-time {$dhcpifconf['defaultleasetime']};\n";

		if ($dhcpifconf['maxleasetime'])

			$dhcpdconf .= "	max-lease-time {$dhcpifconf['maxleasetime']};\n";

		if (is_array($dhcpifconf['winsserver']) && $dhcpifconf['winsserver'][0]) {

			$dhcpdconf .= "	option netbios-name-servers " . join(",", $dhcpifconf['winsserver']) . ";\n";

			$dhcpdconf .= "	option netbios-node-type 8;\n";

		}

		if ($dhcpifconf['next-server'])

			$dhcpdconf .= "	next-server {$dhcpifconf['next-server']};\n";

		if ($dhcpifconf['filename'])

			$dhcpdconf .= "	filename \"{$dhcpifconf['filename']}\";\n";

		$dhcpdconf .= <<<EOD

}

EOD;

		/* add static mappings */

		if (is_array($dhcpifconf['staticmap'])) {

			$i = 0;

			foreach ($dhcpifconf['staticmap'] as $sm) {

				$dhcpdconf .= <<<EOD

host s_{$dhcpif}_{$i} {

	hardware ethernet {$sm['mac']};

EOD;

				if ($sm['ipaddr'])

					$dhcpdconf .= "	fixed-address {$sm['ipaddr']};\n";

				$dhcpdconf .= "}\n";

				$i++;

			}

		}

		$dhcpdifs[] = $ifcfg['if'];

	}

	fwrite($fd, $dhcpdconf);

	fclose($fd);

	/* create an empty leases database */

	touch("{$g['vardb_path']}/dhcpd.leases");

	/* fire up dhcpd */

	mwexec("/usr/local/sbin/dhcpd -cf {$g['varetc_path']}/dhcpd.conf " .

		join(" ", $dhcpdifs));

	if (!$g['booting']) {

		filter_configure();

	} else

		echo "done\n";

	return 0;

}

function interfaces_staticarp_configure($if) {

        global $config, $g;

        $ifcfg = $config['interfaces'][$if];

        /* Enable staticarp, if enabled */

        if(isset($config['dhcpd'][$if]['staticarp'])) {

                mwexec("/sbin/ifconfig " . escapeshellarg($ifcfg['if']) . " staticarp " );

                mwexec("/usr/sbin/arp -ad > /dev/null 2>&1 ");

                if (is_array($config['dhcpd'][$if]['staticmap'])) {

                        foreach ($config['dhcpd'][$if]['staticmap'] as $arpent) {

                                mwexec("/usr/sbin/arp -s " . escapeshellarg($arpent['ipaddr']) . " " . escapeshellarg($arpent['mac']));

                        }

                }

        } else {

                mwexec("/sbin/ifconfig " . escapeshellarg($ifcfg['if']) . " -staticarp " );

                mwexec("/usr/sbin/arp -ad > /dev/null 2>&1 ");

        }

        return 0;

}

function services_dhcrelay_configure() {

	global $config, $g;

	/* kill any running dhcrelay */

	killbypid("{$g['varrun_path']}/dhcrelay.pid");

	$dhcrelaycfg = $config['dhcrelay'];

	/* DHCPRelay enabled on any interfaces? */

	$dhcrelayenable = false;

	foreach ($dhcrelaycfg as $dhcrelayif => $dhcrelayifconf) {

		if (isset($dhcrelayifconf['enable']) &&

			(($dhcrelayif == "lan") ||

			(isset($config['interfaces'][$dhcrelayif]['enable']) &&

			$config['interfaces'][$dhcrelayif]['if'] && (!$config['interfaces'][$dhcrelayif]['bridge']))))

			$dhcrelayenable = true;

	}

	if (!$dhcrelayenable)

		return 0;

	if ($g['booting'])

		echo "Starting DHCP relay service... ";

	else

		sleep(1);

	$dhcrelayifs = array();

	foreach ($dhcrelaycfg as $dhcrelayif => $dhcrelayifconf) {

		$ifcfg = $config['interfaces'][$dhcrelayif];

		if (!isset($dhcrelayifconf['enable']) ||

			(($dhcrelayif != "lan") &&

			(!isset($ifcfg['enable']) || !$ifcfg['if'] || $ifcfg['bridge'])))

			continue;

		$dhcrelayifs[] = $ifcfg['if'];

	}

	/* In order for the relay to work, it needs to be active on the

	   interface in which the destination server sits */

	foreach ($config['interfaces'] as $ifname) {

		$subnet = $ifname['ipaddr'] . "/" . $ifname['subnet'];

		if (ip_in_subnet($dhcrelaycfg['server'],$subnet))

			$destif = $ifname['if'];

	}

	if (!isset($destif))

		$destif = $config['interfaces']['wan']['if'];

	$dhcrelayifs[] = $destif;

	$dhcrelayifs = array_unique($dhcrelayifs);

	/* fire up dhcrelay */

	$cmd = "/usr/local/sbin/dhcrelay -i " .  join(" -i ", $dhcrelayifs);

	if (isset($dhcrelaycfg['agentoption']))

		$cmd .=  " -a -m replace";

	$cmd .= " {$dhcrelaycfg['server']}";

	mwexec($cmd);

	if (!$g['booting']) {

		filter_configure();

	} else

		echo "done\n";

	return 0;

}

function services_dyndns_reset() {

	global $config, $g;

	if (file_exists("{$g['vardb_path']}/ez-ipupdate.cache")) {

		unlink("{$g['vardb_path']}/ez-ipupdate.cache");

	}

	if (file_exists("{$g['conf_path']}/ez-ipupdate.cache")) {

		conf_mount_rw();

		unlink("{$g['conf_path']}/ez-ipupdate.cache");

		conf_mount_ro();

	}

	return 0;

}

function services_dyndns_configure() {

	global $config, $g;

	/* kill any running ez-ipupdate */

	/* ez-ipupdate needs SIGQUIT instead of SIGTERM */

	sigkillbypid("{$g['varrun_path']}/ez-ipupdate.pid", "QUIT");

	$dyndnscfg = $config['dyndns'];

	$wancfg = $config['interfaces']['wan'];

	if (isset($dyndnscfg['enable'])) {

		if ($g['booting'])

			echo "Starting DynDNS client... ";

		else

			sleep(1);

		/* determine WAN interface name */

		$wanif = get_real_wan_interface();

		/* write ez-ipupdate.conf */

		$fd = fopen("{$g['varetc_path']}/ez-ipupdate.conf", "w");

		if (!$fd) {

			printf("Error: cannot open ez-ipupdate.conf in services_dyndns_configure().\n");

			return 1;

		}

		$ezipupdateconf = <<<EOD

service-type={$dyndnscfg['type']}

user={$dyndnscfg['username']}:{$dyndnscfg['password']}

host={$dyndnscfg['host']}

interface=$wanif

max-interval=2073600

pid-file={$g['varrun_path']}/ez-ipupdate.pid

cache-file={$g['vardb_path']}/ez-ipupdate.cache

execute=/etc/rc.dyndns.storecache

daemon

EOD;

		/* enable MX? */

		if ($dyndnscfg['mx']) {

			$ezipupdateconf .= "mx={$dyndnscfg['mx']}\n";

		}

		/* enable wildcards? */

		if (isset($dyndnscfg['wildcard'])) {

			$ezipupdateconf .= "wildcard\n";

		}

		fwrite($fd, $ezipupdateconf);

		fclose($fd);

		/* if we're booting, copy the cache file from /conf */

		if ($g['booting']) {

			if (file_exists("{$g['conf_path']}/ez-ipupdate.cache")) {

				copy("{$g['conf_path']}/ez-ipupdate.cache", "{$g['vardb_path']}/ez-ipupdate.cache");

			}

		}

		/* run ez-ipupdate */

		mwexec("/usr/local/bin/ez-ipupdate -c {$g['varetc_path']}/ez-ipupdate.conf");

		if ($g['booting'])

			echo "done\n";

	}

	return 0;

}

function services_dnsmasq_configure() {

	global $config, $g;

	/* kill any running dnsmasq */

	sigkillbypid("{$g['varrun_path']}/dnsmasq.pid", "TERM");

	if (isset($config['dnsmasq']['enable'])) {

		if ($g['booting'])

			echo "Starting DNS forwarder... ";

		else

			sleep(1);

		/* generate hosts file */

		system_hosts_generate();

		$args = "";

		if (isset($config['dnsmasq']['regdhcp'])) {

			$args .= " -l {$g['vardb_path']}/dhcpd.leases" .

				" -s {$config['system']['domain']}";

		}

		/* run dnsmasq */

		mwexec("/usr/local/sbin/dnsmasq {$args}");

		if ($g['booting'])

			echo "done\n";

	}

	if (!$g['booting']) {

		services_dhcpd_configure();

	}

	return 0;

}

function services_snmpd_configure() {

	global $config, $g;

	/* kill any running snmpd */

	sigkillbypid("{$g['varrun_path']}/snmpd.pid", "TERM");

	if (isset($config['snmpd']['enable'])) {

		if ($g['booting'])

			echo "Starting SNMP agent... ";

		/* generate snmpd.conf */

		$fd = fopen("{$g['varetc_path']}/snmpd.conf", "w");

		if (!$fd) {

			printf("Error: cannot open snmpd.conf in services_snmpd_configure().\n");

			return 1;

		}

		$snmpdconf = <<<EOD

syslocation "{$config['snmpd']['syslocation']}"

syscontact "{$config['snmpd']['syscontact']}"

rocommunity "{$config['snmpd']['rocommunity']}"

EOD;

		fwrite($fd, $snmpdconf);

		fclose($fd);

		/* run snmpd */

		mwexec("/usr/local/sbin/snmpd -c {$g['varetc_path']}/snmpd.conf" .

			" -P {$g['varrun_path']}/snmpd.pid");

		if ($g['booting'])

			echo "done\n";

	}

	return 0;

}

function services_proxyarp_configure() {

	global $config, $g;

	/* kill any running choparp */

	killbyname("choparp");

	if (is_array($config['proxyarp']) && count($config['proxyarp'])) {

		$paa = array();

		/* group by interface */

		foreach ($config['proxyarp']['proxyarpnet'] as $paent) {

			if ($paent['interface'])

				$if = $paent['interface'];

			else

				$if = "wan";

			if (!is_array($paa[$if]))

				$paa[$if] = array();

			$paa[$if][] = $paent;

		}

		foreach ($paa as $paif => $paents) {

			if ($paif == "wan" && !(is_ipaddr($config['interfaces']['wan']['ipaddr']) ||

                                       ($config['interfaces']['wan']['ipaddr'] == "dhcp") ||

                                       ($config['interfaces']['wan']['ipaddr'] == "bigpond")))

                               continue;

			$args = $config['interfaces'][$paif]['if'] . " auto";

			foreach ($paents as $paent) {

				if (isset($paent['network']))

					$args .= " " . escapeshellarg($paent['network']);

				else if (isset($paent['range']))

					$args .= " " . escapeshellarg($paent['range']['from'] . "-" .

						$paent['range']['to']);

			}

			mwexec_bg("/usr/local/sbin/choparp " . $args);

		}

	}

}

function services_dnsupdate_process() {

	global $config, $g;

	/* Dynamic DNS updating active? */

	if (isset($config['dnsupdate']['enable'])) {

		$wanip = get_current_wan_address();

		if ($wanip) {

			$keyname = $config['dnsupdate']['keyname'];

			/* trailing dot */

			if (substr($keyname, -1) != ".")

				$keyname .= ".";

			$hostname = $config['dnsupdate']['host'];

			/* trailing dot */

			if (substr($hostname, -1) != ".")

				$hostname .= ".";

			/* write private key file

			   this is dumb - public and private keys are the same for HMAC-MD5,

			   but nsupdate insists on having both */

			$fd = fopen("{$g['varetc_path']}/K{$keyname}+157+00000.private", "w");

			$privkey .= <<<EOD

Private-key-format: v1.2

Algorithm: 157 (HMAC)

Key: {$config['dnsupdate']['keydata']}

EOD;

			fwrite($fd, $privkey);

			fclose($fd);

			/* write public key file */

			if ($config['dnsupdate']['keytype'] == "zone") {

				$flags = 257;

				$proto = 3;

			} else if ($config['dnsupdate']['keytype'] == "host") {

				$flags = 513;

				$proto = 3;

			} else if ($config['dnsupdate']['keytype'] == "user") {

				$flags = 0;

				$proto = 2;

			}

			$fd = fopen("{$g['varetc_path']}/K{$keyname}+157+00000.key", "w");

			fwrite($fd, "{$keyname} IN KEY {$flags} {$proto} 157 {$config['dnsupdate']['keydata']}\n");

			fclose($fd);

			/* generate update instructions */

			$upinst =  "update delete {$config['dnsupdate']['host']} A\n";

			$upinst .= "update add {$config['dnsupdate']['host']} {$config['dnsupdate']['ttl']} A {$wanip}\n";

			$upinst .= "\n";	/* mind that trailing newline! */

			$fd = fopen("{$g['varetc_path']}/nsupdatecmds", "w");

			fwrite($fd, $upinst);

			fclose($fd);

			/* invoke nsupdate */

			$cmd = "/usr/sbin/nsupdate -k {$g['varetc_path']}:{$keyname}";

			if (isset($config['dnsupdate']['usetcp']))

				$cmd .= " -v";

			$cmd .= " {$g['varetc_path']}/nsupdatecmds";

			mwexec_bg($cmd);

		}

	}

	return 0;

}

?>