Services.class.php

<?php
// vim: :set filetype=php tabstop=4 shiftwidth=4 autoindent smartindent:
namespace FreePBX\modules\Firewall;

class Services {

	private $allservices;
	private $coreservices;
	private $extraservices;
	private $firewall;
	private $sysAdmin;
	private $config;

	public function __construct() {
		// Can't define arrays in some versions of PHP.
		$this->coreservices = array("ssh", "http", "https", "ucp","ucp_ssl", "pjsip", "chansip", "iax", "webrtc", "letsencrypt", "api", "api_ssl", "ntp");
		$this->extraservices = array("sng_phone_svc", "provis", "provis_ssl", "vpn", "restapps", "restapps_ssl", "xmpp", "ftp", "tftp", "nfs", "smb");

		$this->allservices = array_merge($this->coreservices, $this->extraservices);

	}

	public function getCoreServices() {
		return $this->coreservices;
	}

	public function getExtraServices() {
		return $this->extraservices;
	}

	public function getService($svc = false) {
		if (!$svc) {
			throw new \Exception("Wasn't asked for a service");
		}

		// TODO: in_array is horrible and we should never use it. However,
		// in development, it's handy to catch typos. Remove this line when it's
		// in use.
		if (!in_array($svc, $this->allservices)) {
			throw new \Exception("Don't know what '$svc' is.");
		}

		// We want to call the discoverer method which is getSvc_$svc
		$method = "getSvc_$svc";
		if (!method_exists($this, $method)) {
			throw new \Exception("Tried to call method $method, it doesn't exist");
		}

		return $this->$method();
	}

	private function getSvc_ntp(){
		$retarr = array(
			"name" => _("NTP"),
			"defzones" => array("internal"),
			"descr" => _("Allow any incoming NTP requests. The port is enabled by default on the Local zone."),
			"fw" => array(array("protocol" => "udp", "port" => 123)),
		);
		return $retarr;
	}

	private function getSvc_ssh() {
		$retarr = array(
			"name" => _("SSH"),
			"defzones" => array("internal"),
			"descr" => _("SSH is the most commonly used system administration tool. It is also a common target for hackers. We <strong>strongly recommend</strong> using a strong password and SSH keys. "),
			"fw" => array(array("protocol" => "tcp", "port" => 22)),
			"noreject" => true,
			"guess" => _("Warning: Unable to read /etc/ssh/sshd_config - this port may be incorrect. This is <strong>expected</strong> when viewing through the Web Interface. The correct port, as configured, will be used in the firewall service."),
		);

		// Is sshd_config anywhere else on other machines?
		$conf = "/etc/ssh/sshd_config";

		// Note: Only readable by root!
		if (!file_exists($conf) || !is_readable($conf)) {
			return $retarr;
		} else {
			$retarr['guess'] = false; // Woo, we can read it.
		}

		// Look for a line starting with Port and then a number.
		$sshdconf = file_get_contents($conf);
		if (preg_match("/^Port\s+(\d+)/m", $sshdconf, $out)) {
			$retarr['fw'] = array(array("protocol" => "tcp", "port" => $out[1]));
		}
		return $retarr;
	}

	private function getSvc_api() {
		$retarr = array(
			"name" => _("API (HTTP)"),
			"defzones" => array("internal"),
			"descr" => _("API port management for restapi and GrahpQL."),
			"fw" => array(array("protocol" => "tcp", "port" => 83)));

		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			if (isset($ports['restapi']) && (int) $ports['restapi'] > 1) {
				$retarr['fw'][0]['port'] = $ports['restapi'];
			}
		} catch (\Exception $e) {
			// ignore
		}
		return $retarr;
	}

	private function getSvc_api_ssl() {
		$retarr = array(
			"name" => _("API (HTTPS)"),
			"defzones" => array("internal"),
			"descr" => _("API HTTPS port management for restapi and GrahpQL."),
			"fw" => array(array("protocol" => "tcp", "port" => 2443)));

		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			if (isset($ports['sslrestapi']) && (int) $ports['sslrestapi'] > 1) {
				$retarr['fw'][0]['port'] = $ports['sslrestapi'];
			}
		} catch (\Exception $e) {
			// ignore
		}
		return $retarr;
	}

	private function getSvc_http() {
		$retarr = array(
			"name" => _("Web Management"),
			"defzones" => array("internal"),
			"descr" => _("Web management interface for your PBX. This is the http, not https (secure) interface."),
			"fw" => array(array("protocol" => "tcp", "port" => 80, "leport" => true)),
		);

		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			if (isset($ports['acp']) && $ports['acp'] >= 80) {
				$retarr['fw'][0]['port'] = $ports['acp'];
			}
		} catch (\Exception $e) {
			// ignore
		}
		return $retarr;
	}

	private function getSvc_https() {
		$retarr = array(
			"name" => _("Web Management (Secure)"),
			"defzones" => array("internal"),
			"descr" => _("Web management interface for your PBX. This is the https interface."),
			"fw" => array(array("protocol" => "tcp", "port" => 443)),
			"noreject" => true,
		);
		try {
			$ports = $this->getSysadminObj()->getPorts();
			if (isset($ports['sslacp']) && $ports['sslacp'] >= 80) {
				$retarr['fw'][0]['port'] = $ports['sslacp'];
			}
		} catch (\Exception $e) {
			// ignore
		}
		return $retarr;
	}

	private function getSvc_ucp() {
		$retarr = array(
			"name" => _("UCP"),
			"defzones" => array("other", "internal"),
			"descr" => _("UCP - User Control Panel - is the main user interface to the PBX, and allows people to control their phone."),
			"fw" => array(array("protocol" => "tcp", "port" => 81)),
		);
		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			// Sysadmin is installed
			$retarr['fw'] = array();

			if (isset($ports['ucp']) && $ports['ucp'] !== 'disabled' && $ports['ucp'] >= 80) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $ports['ucp'], "leport" => true);
			}
			// Were there any ports discovered?
			if (!$retarr['fw']) {
				// No port are assigned to restapps, it's not enabled in sysadmin
				$retarr['descr'] = _("Dedicated UCP access is disabled in Sysadmin Port Management");
				$retarr['disabled'] = true;
				// Don't return the nodejs stuff if UCP is disabled
				return $retarr;
			}
		} catch (\Exception $e) {
			// Ignore. User will have to manually add whatever ports
			// they have configured UCP to listen on.
		}

		// Add nodejs listen port, if it's installed.
		$nodejs = $this->getConfigObj()->get('NODEJSBINDPORT');
		if ($nodejs) {
			$retarr['fw'][] = array("protocol" => "tcp", "port" => $nodejs);
		}
		return $retarr;
	}

	private function getSvc_ucp_ssl() {
		$retarr = array(
			"name" => _("UCP (Secure)"),
			"defzones" => array("other", "internal"),
			"descr" => _("UCP (Secure) - User Control Panel - is the main user interface to the PBX, and allows people to control their phone. Note that if you want to allow users to use their web browsers to make calls through UCP (HTTPS) you also need to add WebRTC to the same zone(s)."),
			"fw" => array(array("protocol" => "tcp", "port" => 4443)),
		);
		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			// Sysadmin is installed
			$retarr['fw'] = array();

			if (isset($ports['sslucp']) && $ports['sslucp'] !== 'disabled' && $ports['sslucp'] >= 80) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $ports['sslucp']);
			}
			// Were there any ports discovered?
			if (!$retarr['fw']) {
				// No port are assigned to restapps, it's not enabled in sysadmin
				$retarr['descr'] = _("Dedicated UCP SSL access is disabled in Sysadmin Port Management");
				$retarr['disabled'] = true;
				// Don't return the nodejs stuff if UCP is disabled
				return $retarr;
			}
		} catch (\Exception $e) {
			// Ignore. User will have to manually add whatever ports
			// they have configured UCP to listen on.
		}

		// Add nodejs listen port, if it's installed.
		$nodejstls = $this->getConfigObj()->get('NODEJSHTTPSBINDPORT');
		if ($nodejstls) {
			$retarr['fw'][] = array("protocol" => "tcp", "port" => $nodejstls);
		}
		return $retarr;
	}

	private function getSvc_webrtc() {
		$websocket = $this->getConfigObj()->get('HTTPBINDPORT');
		$tlssocket = $this->getConfigObj()->get('HTTPTLSBINDPORT');

		if (!$websocket) {
			$websocket = 8088;
		}
		if (!$tlssocket) {
			$tlssocket = 8089;
		}

		$retarr = array(
			"name" => _("WebRTC"),
			"defzones" => array("internal"),
			"descr" => _("WebRTC is used by UCP (and other services) to enable calls to be made via a web browser."),
			"fw" => array(
				array("protocol" => "tcp", "port" => $websocket),
				array("protocol" => "tcp", "port" => $tlssocket),
			),
		);
		return $retarr;
	}

	private function getSvc_letsencrypt() {

		$retarr = array(
			"name" => _("LetsEncrypt"),
			"descr" => _("This will allow access to the LetsEncrypt service when it is enabled."),
			"fw" => array(),
			"defzones" => array(),
			"disabled" => true,
		);

		try {
			$ports = $this->getSysadminObj()->getPorts();
		} catch (\Exception $e) {
			$ports = array( "leport" => 0 );
		}

		if (isset($ports['leport']) && $ports['leport'] >= 80) {
			$retarr['fw'] = array(array("protocol" => "tcp", "port" => $ports['leport'], "leport" => true),);
			$advancedsettingsurl = "<a href=?display=firewall&page=advanced&tab=settings>";
			$as = $this->getFirewallObj()->getAdvancedSettings();
			if ($as['lefilter'] == "disabled") {
				$retarr["descr"] .= "<div class='well'>".sprintf(_("This must be allowed access from the 'Internet' zone unless %s Responsive LetsEncrypt Rules %s are enabled. Enabling %s Responsive LetsEncrypt Rules %s is recommended"), $advancedsettingsurl, "</a>", $advancedsettingsurl, "</a>")."</div>";
				$retarr['defzones'] = array("external");
				unset($retarr['disabled']);
			} else {
				$retarr["descr"] .= "<div class='well'>".sprintf( _("This protocol is being managed by %s Responsive LetsEncrypt Rules. %s Disable %s Responsive LetsEncrypt Rules %s to manage access here."), $advancedsettingsurl, "</a>", $advancedsettingsurl, "</a>")."</div>";
			}
		}
		return $retarr;
	}

	private function getSvc_sng_phone_svc() {
		$retarr = array();
		$fpbx = \FreePBX::Create();
		if ($fpbx->Modules->checkStatus("sangomaconnect")) {
			$sngc = $fpbx->Sangomaconnect();
			if (method_exists($sngc, 'firewallService')) {
				$retarr = $sngc->firewallService();
			}
		}

		if (empty($retarr)) {
			if(!isset($retarr['name'])) {
				$retarr['name'] = _("Sangoma Phone Desktop Client Service");
			}
			$retarr['descr'] = _("Sangoma Phone Desktop Client Service is not available or licensed to use. Please make sure the sangomaconnect module is installed and enabled.");
			$retarr['defzones'] = array("external", "other", "internal");
			$retarr['disabled'] = true;
			$retarr['fw'] = array();
		}
		return $retarr;
	}

	private function getSvc_pjsip() {
		$retarr = array(
			"name" => _("SIP Protocol"),
			"defzones" => array("other", "internal"),
			"descr" => _("This is the SIP driver (pjsip). Most devices use SIP."),
			"fw" => array(),
		);

		if ($this->getFirewallObj()->getConfig('responsivefw') && $this->getFirewallObj()->getConfig("pjsip", "rfw")) {
			$retarr['descr'] .= "<div class='well'>"._("This protocol is being managed by the Responsive Firewall. You <strong>should not</strong> enable access from the 'Internet' zone, or Responsive Firewall will be bypassed.")."</div>";
		}

		$driver = $this->getConfigObj()->get('ASTSIPDRIVER');
		if ($driver == "both" || $driver == "chan_pjsip") {
			$ss = \FreePBX::Sipsettings();
			$allBinds = $ss->getConfig("binds");
			if (!is_array($allBinds)) {
				$allBinds = array();
			}
			$websocket = false;
			foreach ($allBinds as $type => $listenArr) {
				if (!is_array($listenArr)) {
					$listenArr = array();
				}
				// What interface(s) are we listening on?
				foreach ($listenArr as $ipaddr => $mode) {
					if ($mode != "on") {
						continue;
					}
					if ($type == "ws" || $type == "wss") {
						$websocket = $this->getConfigObj()->get('HTTPBINDPORT');
						continue;
					}

					$port = $ss->getConfig($type."port-".$ipaddr);
					if (!$port) {
						continue;
					}
					if ($type == "tcp" || $type == "tls") {
						$retarr['fw'][] = array("protocol" => "tcp", "port" => $port);
					} elseif ($type == "udp") {
						$retarr['fw'][] = array("protocol" => "udp", "port" => $port);
					} else {
						throw new \Exception("Unknown protocol $type");
					}
				}
			}
			if ($websocket) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $websocket);
			}
		} else {
			$retarr['descr'] = _("PJSIP is not available on this machine");
			$retarr['disabled'] = true;
		}
		return $retarr;
	}

	private function getSvc_chansip() {
		$retarr = array(
			"name" => _("CHAN_SIP Protocol"),
			"defzones" => array("internal"),
			"descr" => _("This is the legacy chan_sip driver."),
			"fw" => array(),
		);

		if ($this->getFirewallObj()->getConfig('responsivefw') && $this->getFirewallObj()->getConfig("chansip", "rfw")) {
			$retarr['descr'] .= "<div class='well'>"._("This protocol is being managed by the Responsive Firewall. You <strong>should not</strong> enable access from the 'Internet' zone, or Responsive Firewall will be bypassed.")."</div>";
		}

		$driver = $this->getConfigObj()->get('ASTSIPDRIVER');
		if ($driver == "both" || $driver == "chan_sip") {
			$sipport = 5060;
			$tlsport = false;
			$allBinds = \FreePBX::Sipsettings()->getBinds(true);
			if (isset($allBinds['sip']) && is_array($allBinds['sip'])) {
				foreach ($allBinds['sip'] as $sip) {
					if (isset($sip['udp']) && (int) $sip['udp'] > 1024) {
						$sipport = (int) $sip['udp'];
					}
					if (isset($sip['tls']) && (int) $sip['tls'] > 1024) {
						$tlsport = (int) $sip['tls'];
					}
				}
			}
			$retarr['fw'][] = array("protocol" => "udp", "port" => $sipport);

			// Is it listening on TCP as well as UDP? This isn't recommented, but...
			$sipsettings = \FreePBX::Sipsettings()->getChanSipSettings();
			if (isset($sipsettings['tcpenable']) && $sipsettings['tcpenable'] == 'yes') {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $sipport);
			}

			// How about TLS?
			if ($tlsport) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $tlsport);
			}
		}

		// Make sure there's actually some binds.
		if (!$retarr['fw']) {
			$retarr['descr'] = _("CHANSIP is not available on this machine");
			$retarr['disabled'] = true;
		}
		return $retarr;
	}

	private function getSvc_iax() {
		$retarr = array(
			"name" => _("IAX Protocol"),
			"defzones" => array("internal"),
			"descr" => _("IAX stands for Inter Asterisk eXchange. It is more bandwidth efficient than SIP, but few providers support it."),
			// If you're using IAX on a non standard port, stop it. You're doing it wrong.
			"fw" => array(array("protocol" => "udp", "port" => 4569)),
		);
		if ($this->getFirewallObj()->getConfig('responsivefw') && $this->getFirewallObj()->getConfig("iax", "rfw")) {
			$retarr['descr'] .= "<div class='well'>"._("This protocol is being managed by the Responsive Firewall. You <strong>should not</strong> enable access from the 'Internet' zone, or Responsive Firewall will be bypassed.")."</div>";
		}
		return $retarr;
	}

	private function getSvc_provis() {
		$retarr = array(
			"name" => _("HTTP Provisioning"),
			"defzones" => array("other", "internal"),
			"descr" => _("Phones that are configured via Endpoint Manager to use HTTP provisioning will use this port to download its configuration. It is NOT ADVISED to expose this port to the public internet, as SIP Secrets will be available to a knowledgable attacker."),
			"fw" => array(array("protocol" => "tcp", "port" => 84, "ratelimit" => true, "leport" => true))
		);
		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			$retarr['fw'] = array();
			if (isset($ports['hpro']) && $ports['hpro'] !== 'disabled' && $ports['hpro'] >= 80) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $ports['hpro'], "ratelimit" => true, "leport" => true);
			}
			if (!$retarr['fw']) {
				// No port are assigned to restapps, it's not enabled in sysadmin
				$retarr['descr'] = _("HTTP Provisioning is disabled in Sysadmin Port Management");
				$retarr['disabled'] = true;
			}
		} catch (\Exception $e) {
			// ignore
		}
		return $retarr;
	}

	private function getSvc_provis_ssl() {
		$retarr = array(
			"name" => _("HTTPS Provisioning"),
			"defzones" => array("other", "internal"),
			"descr" => _("Phones that are configured via Endpoint Manager to use HTTPS provisioning will use this port to download its configuration. It is NOT ADVISED to expose this port to the public internet, as SIP Secrets will be available to a knowledgable attacker."),
			"fw" => array(array("protocol" => "tcp", "port" => 1443, "ratelimit" => true))
		);
		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			$retarr['fw'] = array();
			if (isset($ports['sslhpro']) && $ports['sslhpro'] !== 'disabled' && $ports['sslhpro'] >= 80) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $ports['sslhpro'], "ratelimit" => true);
			}
			if (!$retarr['fw']) {
				// No port are assigned to restapps, it's not enabled in sysadmin
				$retarr['descr'] = _("HTTPS Provisioning is disabled in Sysadmin Port Management");
				$retarr['disabled'] = true;
			}
		} catch (\Exception $e) {
			// ignore
		}
		return $retarr;
	}

	private function getSvc_vpn() {
		$port = \FreePBX::Sysadmin()->getVars('vpnserver_port',array('vpnserver_port'=>1194));
		$retarr = array(
			"name" => _("OpenVPN Server"),
			"defzones" => array("external", "other", "internal"),
			"descr" => _("This allows clients to connect to an OpenVPN server running on this machine. This is an inherently secure protocol."),
			"fw" => array(
				array("protocol" => "udp", "port" => $port)
			),
		);
		return $retarr;
	}

	private function getSvc_restapps() {
		$retarr = array(
			"name" => _("REST Apps (HTTP)"),
			"defzones" => array("internal"),
			"descr" => _("REST Apps are used with intelligent phones to provide an interactive interface from the phone itself. Note that any devices that are allowed access via Responsive Firewall are automatically granted access to this service."),
			"fw" => array(),
		);
		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			if (isset($ports['restapps']) && $ports['restapps'] !== 'disabled' &&  $ports['restapps'] >= 80) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $ports['restapps'], "leport" => true);
			}

			// Were there any ports discovered?
			if (!$retarr['fw']) {
				// No port are assigned to restapps, it's not enabled in sysadmin
				$retarr['descr'] = _("HTTP REST Apps are disabled in Sysadmin Port Management");
				$retarr['disabled'] = true;
			}
		} catch (\Exception $e) {
			$retarr['descr'] = _("REST Apps are only available with System Admin");
			$retarr['disabled'] = true;
		}
		return $retarr;
	}

	private function getSvc_restapps_ssl() {
		$retarr = array(
			"name" => _("REST Apps (HTTPS)"),
			"defzones" => array("internal"),
			"descr" => _("REST Apps are used with intelligent phones to provide an interactive interface from the phone itself. Note that any devices that are allowed access via Responsive Firewall are automatically granted access to this service."),
			"fw" => array(),
		);
		// TODO: This is not portable for machines that don't have sysadmin.
		// Ask sysadmin for the REAL port of the admin interface
		try {
			$ports = $this->getSysadminObj()->getPorts();
			if (isset($ports['sslrestapps']) && $ports['sslrestapps'] !== 'disabled' && $ports['sslrestapps'] >= 80) {
				$retarr['fw'][] = array("protocol" => "tcp", "port" => $ports['sslrestapps']);
			}

			// Were there any ports discovered?
			if (!$retarr['fw']) {
				// No port are assigned to restapps, it's not enabled in sysadmin
				$retarr['descr'] = _("HTTPS REST Apps are disabled in Sysadmin Port Management");
				$retarr['disabled'] = true;
			}
		} catch (\Exception $e) {
			$retarr['descr'] = _("REST Apps are only available with System Admin");
			$retarr['disabled'] = true;
		}
		return $retarr;
	}

	private function getSvc_xmpp() {
		$retarr = array(
			"name" => _("XMPP"),
			"defzones" => array("internal"),
			"descr" => _("This is the XMPP server. If you wish to connect to it using an external Jabber client, you need to open this port."),
			"fw" => array(array("protocol" => "tcp", "port" => 5222)),
		);
		return $retarr;
	}

	private function getSvc_ftp() {
		$retarr = array(
			"name" => _("FTP"),
			"defzones" => array("internal"),
			"descr" => _("FTP is used by Endpoint Manager to send firmware images to phones, as well as additional data."),
			"fw" => array(array("protocol" => "tcp", "port" => 21)),
		);
		return $retarr;
	}

	private function getSvc_tftp() {
		$retarr = array(
			"name" => _("TFTP"),
			"defzones" => array("internal"),
			"descr" => _("TFTP is used normally for provisioning and upgrading of devices."),
			"fw" => array(array("protocol" => "udp", "port" => 69)),
		);
		return $retarr;
	}

	private function getSvc_nfs() {

		$ports = $this->getNfsPorts();

		$retarr = array(
			"name" => _("NFS"),
			"defzones" => array("reject"),
			"fw" => array(),
		);

		if (!$ports) {
			// NFS isn't enabled on this machine.
			$retarr['descr'] = _("NFS Services are not available on this machine");
			$retarr['disabled'] = true;
		} else {
			$retarr['descr'] = _("This allows this machine to be used as a NFS server. This can be useful when you want to easily access files on this machine (for example, to access call recordings). Note that this is <strong>not required</strong> to be enabled to act as a NFS client, and view the filesystem of other machines.");
			$retarr['fw'] = $ports;
		}
		return $retarr;
	}

	private function getNfsPorts() {
		if (!file_exists("/etc/nfs.conf")) {
			return array();
		}

		$nfsd = 2049;
		$mountd = 892;
		$statd = 662;
		$lockdtcp = 32803;
		$lockdudp = 32769;

		// Now, are any of them overridden?
		exec("/usr/sbin/nfsconf --get nfsd port", $output_nfsd, $output_nfsd_rc);
		if ($output_nfsd_rc == 0) {
			$nfsd = $output_nfsd[0];
		}
		exec("/usr/sbin/nfsconf --get mountd port", $output_mountd, $output_mountd_rc);
		if ($output_mountd_rc == 0) {
			$mountd = $output_mountd[0];
		}
		exec("/usr/sbin/nfsconf --get statd port", $output_statd, $output_statd_rc);
		if ($output_statd_rc == 0) {
			$statd = $output_statd[0];
		}
		exec("/usr/sbin/nfsconf --get lockd port", $output_lockd_tcp, $output_lockd_tcp_rc);
		if ($output_lockd_tcp_rc == 0) {
			$lockdtcp = $output_lockd_tcp[0];
		}
		exec("/usr/sbin/nfsconf --get lockd udp-port", $output_lockd_udp, $output_lockd_udp_rc);
		if ($output_lockd_udp_rc == 0) {
			$lockdudp = $output_lockd_udp[0];
		}
		$retarr[] = array('protocol' => 'tcp', 'port' => $nfsd);
		$retarr[] = array('protocol' => 'udp', 'port' => $nfsd);
		$retarr[] = array('protocol' => 'udp', 'port' => $mountd);
		$retarr[] = array('protocol' => 'udp', 'port' => $statd);
		$retarr[] = array('protocol' => 'udp', 'port' => $lockdudp);
		$retarr[] = array('protocol' => 'tcp', 'port' => $mountd);
		$retarr[] = array('protocol' => 'tcp', 'port' => $statd);
		$retarr[] = array('protocol' => 'tcp', 'port' => $lockdtcp);

		return $retarr;
	}

	private function getSvc_smb() {
		$retarr = array(
			"name" => _("SMB/CIFS"),
			"defzones" => array("reject"),
			"fw" => array(),
		);

		if (!file_exists("/etc/samba/smb.conf")) {
			$retarr['descr'] = _("SMB/CIFS (Samba) is not installed on this machine");
			$retarr['disabled'] = true;
		} else {
			$retarr['descr'] = _("SMB/CIFS is used to access files on this machine from Windows or Mac systems.");
			$retarr['fw'] = array(
				array('protocol' => 'udp', 'port' => '137'),
				array('protocol' => 'udp', 'port' => '138'),
				array('protocol' => 'tcp', 'port' => '139'),
				array('protocol' => 'tcp', 'port' => '445'),
			);
		}
		return $retarr;
	}

	private function getSvc_isymphony() {

		// This could be iSymphony, or XactView.
		$known = array(
			"XactView" => "/opt/xactview3/server/conf/main.xml",
			"iSymphony" => "/opt/isymphony3/server/conf/main.xml",
		);

		foreach ($known as $name => $loc) {
			if (file_exists($loc)) {
				$retarr = array(
					"name" => $name,
					"defzones" => array("internal"),
				);
				$xml = @simplexml_load_file($loc);
				if (!isset($xml->Server->Web)) {
					$retarr['descr'] = sprintf(_("%s is not configured correctly."), $name);
					$retarr['disabled'] = true;
				} else {
					$retarr['fw'] = array();
					$retarr['descr'] = sprintf(_("%s is a web-based call management solution."), $name);
					if (isset($xml->Server->Web[0]['port'])) {
						$retarr['fw'][] = array("protocol" => "tcp", "port" => (int) $xml->Server->Web[0]['port']);
					}
					if (isset($xml->Server->Web[0]['sslPort'])) {
						$retarr['fw'][] = array("protocol" => "tcp", "port" => (int) $xml->Server->Web[0]['sslPort']);
					}
				}
				return $retarr;
			}
		}
		$retarr = array(
			"name" => "iSymphony",
			"defzones" => array("internal"),
			"descr" => _("iSymphony is not installed on this server."),
			"disabled" => true,
			"fw" => array(),
		);
		return $retarr;
	}
	
	/**
	 * addToBlacklist
	 *
	 * @param  mixed $host
	 * @return void
	 */
	public function addToBlacklist($host) {
		// Make sure we can look this host up, and it's a valid thing to 
		// add to the blacklist.
		//
		$smart = $this->getFirewallObj()->getSmartObj();
		// Is this a network? If it has a slash, assume it does.
		if (strpos($host, "/") !== false) {
			$rawnet = true;
			$trust = $smart->returnCidr($host);
		} else {
			$rawnet = false;
			$trust = $smart->lookup($host);
		}

		// If it's false, or empty, we couldn't validate it
		if (!$trust) {
			throw new \Exception("Can't validate $host");
		}

		// If it can, we can add it happily.
		// If this is a network, make sure we use the returnCidr value,
		// because that's actually correct.
		if ($rawnet) {
			$this->getFirewallObj()->setConfig($trust, true, "blacklist");
		} else {
			$this->getFirewallObj()->setConfig($host, true, "blacklist");
		}
	}
	
	/**
	 * removeFromBlacklist
	 *
	 * @param  mixed $host
	 * @return void
	 */
	public function removeFromBlacklist($host) {
		$this->getFirewallObj()->setConfig($host, false, "blacklist");
	}
	
	/**
	 * getBlacklist
	 *
	 * @return void
	 */
	public function getBlacklist() {
		$hosts = array_keys($this->getFirewallObj()->getAll("blacklist"));
		$smart = $this->getFirewallObj()->getSmartObj();
		$retarr = array();
		foreach ($hosts as $h) {
			// Is this an IP address?
			list($test) = explode("/", $h);
			if (filter_var($test, \FILTER_VALIDATE_IP)) {
				$retarr[$h] = false;
				continue;
			} else {
				// Try a DNS lookup
				$retarr[$h] = $smart->lookup($h);
			}
		}
		return $retarr;
	}

	/**
	 * setFirewallConfigurations
	 *
	 * @return void
	 */
	public function setFirewallConfigurations($input) {
		$this->firewall = $this->getFirewallObj();

		// Firewall should be enabled
		$this->firewall->setConfig("status", $input['status']);
		// Responsive should be on
		$this->firewall->setConfig("responsivefw", $input['responsiveFirewall']);
		// For chan_sip and pjsip
		$this->firewall->setConfig("chansip", $input['chansip'], 'rfw');
		$this->firewall->setConfig("pjsip", $input['pjsip'], 'rfw');
		// Safe mode disabled
		$this->firewall->setConfig("safemodeenabled", $input['safeMode']);
		// Jiffies set to 1000 (TODO: If we change vm infrastructure, recalc this)
		$this->firewall->setConfig("currentjiffies", $input['currentJiffies']);
		// And mark the OOBE wizard as done
		$this->firewall->setConfig("oobeanswered", array('enabletrustedhost' => $input['enableTrustedHost'], 'enableresponsive' => $input['enableResponsive'], 'externsetup' => $input['externalSetup']));
		$this->setServiceZones("provis", array(isset($input['serviceZone'][0]) ? $input['serviceZone'][0] : null,isset($input['serviceZone'][1]) ? $input['serviceZone'][1] : null, isset($input['serviceZone'][2]) ? $input['serviceZone'][2] : null));
		
		return true;
	}
	
	/**
	 * addToWhitelist
	 *
	 * @param  mixed $input
	 * @return void
	 */
	public function addToWhitelist($input){
		$this->addToZone($input['sourceIp'], $input['zone'], $input['hidden']); 
		return true;
	}
	
	/**
	 * getFirewallConfigurations
	 *
	 * @param  mixed $input
	 * @return void
	 */
	public function getFirewallConfigurations() {
		$this->firewall = $this->getFirewallObj();

		$firewallStatus = $this->firewall->getConfig("status");
		$responsiveFirewall = $this->firewall->getConfig("responsivefw");
		$chainSip= $this->firewall->getConfig("chansip", "rfw");
		$pjSip = $this->firewall->getConfig("pjsip", "rfw");
		$safemodeEnabled = $this->firewall->getConfig("safemodeenabled");
		$currentJiffies = $this->firewall->getConfig("currentjiffies");
		$oobeAnswered = $this->firewall->getConfig("oobeanswered");
		$provis = $this->firewall->getConfig("provis","servicesettings");
		return array(['firewallStatus' => $firewallStatus, 'responsiveFirewall' => $responsiveFirewall, 'chainSip' => $chainSip, 'pjSip' => $pjSip, 'safemodeEnabled' => $safemodeEnabled, 'currentJiffies' => $currentJiffies, 'oobeAnswered' => $oobeAnswered, 'provis' => $provis]);
	}
	
	/**
	 * setServiceZones
	 *
	 * @param  mixed $service
	 * @param  mixed $zones
	 * @return void
	 */
	public function setServiceZones($service, $zones) {
		$this->firewall = $this->getFirewallObj();
		if (!is_array($zones)) {
			throw new \Exception("No zones provided for service $service");
		}
		$this->firewall->setConfig($service, $zones, "servicesettings");
	}
	
	/**
	 * addToZone
	 *
	 * @param  mixed $srcip
	 * @param  mixed $zone
	 * @param  mixed $hide
	 * @param  mixed $apply
	 * @return void
	 */
	public function addToZone($srcip, $zone, $hide = false, $apply = true) {
		$this->firewall = $this->getFirewallObj();
		$split = explode("/", $srcip);

		if (!filter_var($split[0], \FILTER_VALIDATE_IP)) {
			throw new \Exception("Can only add IP addressess");
		}

		if (!isset($split[1])) {
			$split[1] = "32";
		}

		if ((int) $split[1] > 32 || (int) $split[1] < 8) {
			throw new \Exception("Invalid source - $srcip");
		}

		$trust = join("/", $split);

		// Ok, grab our current trustednets and update them
		$nets = $this->firewall->getConfig("networkmaps");

		if (!is_array($nets)) {
			$nets = array();
		}

		$nets[$trust] = $zone;
		$this->firewall->setConfig("networkmaps", $nets);

		// We were asked to hide this?
		if ($hide) {
			$hidden = $this->firewall->getConfig("hiddennets");
			if (!is_array($hidden)) {
				$hidden = array();
			}
			$hidden[$trust] = true;
			$this->firewall->setConfig("hiddennets", $hidden);
		}

		// Is the machine running?
		if ($apply) {
			// It is. Is firewall enabled?
			if ($this->firewall->getConfig("status")) {
				// It is. OK, ssh in and update the config.
				$filename = "/var/spool/asterisk/incron/firewall.addnetwork";
				$params = [ $zone => [ "$srcip/32" ] ];
				$b = base64_encode(gzcompress(json_encode($params)));
				// Mangle the filename so it's a filename
				$filename .= ".".str_replace('/', '_', $b);
				touch($filename);
			}
		}
	}
	
	/**
	 * getServiceZones
	 *
	 * @return void
	 */
	public function getServiceZones() {
		$res =  $this->getFirewallObj()->get_networkmaps();
		$response_array = array();
		foreach($res as $key => $val){
			array_push($response_array,array('sourceIp' => $key , 'trusted' => $val));
		}
		return $response_array;
	}

	/**
	 * getFirwallInterfaces
	 *
	 * @return void
	 */
	public function getFirewallInterfaces() {
		$res = $this->getFirewallObj()->getInterfaces();
		$zns = $this->getFirewallObj()->getZones();
		$response_array = array();
		foreach($res as $key => $val){
			if(isset($val['config']['ZONE']) && array_key_exists($val['config']['ZONE'],$zns)){
				$zone = $zns[$val['config']['ZONE']];
				$zoneName = $zone['name']. ' (' . $zone['summary'] . ')';
			} else {
				$zoneName = '';
			}
			array_push($response_array,array('ints' => $key , 'zone' => $zoneName , 'description' => isset($val['config']['DESCRIPTION']) ? $val['config']['DESCRIPTION'] :''));
		}
		return $response_array;
	}

	function getSysadminObj() {
		if (!$this->sysAdmin) {
			$this->sysAdmin = \FreePBX::Sysadmin();
		}
		return $this->sysAdmin;
	}

	function getFirewallObj() {
		if (!$this->firewall) {
			$this->firewall = \FreePBX::Firewall();
		}
		return $this->firewall;
	}

	function getConfigObj() {
		if (!$this->config) {
			$this->config = \FreePBX::Config();
		}
		return $this->config;
	}
}