pfSense

<?php

require_once('config.inc');

require_once('globals.inc');

require_once('service-utils.inc');

function openntpd_install() {

	global $g;

	$config_file = $g['varetc_path'] . '/openntpd.conf';

	$rcfile = array();

	$rcfile['file'] = 'openntpd.sh';

	$rcfile['start'] = <<<EOD

if [ -f $config_file ]; then

	ntpd -f $config_file

fi

EOD;

	$rcfile['stop'] = "killall ntpd";

	write_rcfile($rcfile);

}

function openntpd_get_iface_ip($iface) {

	$iface = convert_friendly_interface_to_real_interface_name($iface);

	$line = trim(shell_exec("ifconfig $iface | grep inet | grep -v inet6"));

	list($dummy, $ip, $dummy2, $dummy3) = explode(' ', $line);

	return $ip;

}

function openntpd_resync() {

	global $g, $config;

	$settings = $config['installedpackages']['openntpd']['config'][0];

	$config_file = $g['varetc_path'] . '/openntpd.conf';

	if ($settings['enable'] == 'on') {

		$conf = '';

		$ifaces = explode(',', $settings['interface']);

		$ips = array_map('openntpd_get_iface_ip', $ifaces);

		foreach ($ips as $ip)

			$conf .= "listen on $ip\n";

		$servers = explode(',', $config['system']['timeservers']);

		foreach ($servers as $server)

			$conf .= "servers $server\n";

		file_put_contents($config_file, $conf);

	}

	else {

		if (file_exists($config_file))

			unlink($config_file);

	}

	restart_service('openntpd');

}