<?php
/*
 * dyndns.class
 *
 * part of pfSense (https://www.pfsense.org)
 * Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

	/*
	 * PHP.updateDNS (pfSense version)
	 *
	 * +====================================================+
	 *  Services Supported:
	 *    - DynDns (dyndns.org) [dynamic, static, custom]
	 *    - No-IP (no-ip.com)
	 *    - EasyDNS (easydns.com)
	 *    - DHS (www.dhs.org)
	 *    - HN (hn.org) -- incomplete checking!
	 *    - DynS (dyns.org)
	 *    - ZoneEdit (zoneedit.com)
	 *    - FreeDNS (freedns.afraid.org)
	 *    - FreeDNS IPv6 (freedns.afraid.org)
	 *    - Loopia (loopia.se)
	 *    - StaticCling (staticcling.org)
	 *    - DNSexit (dnsexit.com)
	 *    - OpenDNS (opendns.com)
	 *    - Namecheap (namecheap.com)
	 *    - HE.net (dns.he.net)
	 *    - HE.net IPv6 (dns.he.net)
	 *    - HE.net Tunnelbroker IP update (ipv4.tunnelbroker.net)
	 *    - SelfHost (selfhost.de)
	 *    - Amazon Route 53 (aws.amazon.com)
	 *    - DNS-O-Matic (dnsomatic.com)
	 *    - Custom DDNS (any URL)
	 *    - Custom DDNS IPv6 (any URL)
	 *    - CloudFlare (www.cloudflare.com)
	 *    - CloudFlare IPv6 (www.cloudflare.com)
	 *    - Eurodns (eurodns.com)
	 *    - GratisDNS (gratisdns.dk)
	 *    - City Network (citynetwork.se)
	 *    - GleSYS (glesys.com)
	 *    - DNSimple (dnsimple.com)
	 *    - Google Domains (domains.google.com)
	 *    - DNS Made Easy (www.dnsmadeeasy.com)
	 *    - SPDYN (spdyn.de)
	 *    - SPDYN IPv6 (spdyn.de)
	 *    - All-Inkl (all-inkl.com)
	 *    - DuiaDNS (www.duiadns.net)
	 *    - DuiaDNS IPv6 (www.duiadns.net)
	 * +----------------------------------------------------+
	 *  Requirements:
	 *    - PHP version 4.0.2 or higher with the CURL Library and the PCRE Library
	 * +----------------------------------------------------+
	 *  Public Functions
	 *    - updatedns()
	 *
	 *  Private Functions
	 *    - _update()
	 *    - _checkStatus()
	 *    - _error()
	 *    - _detectChange()
	 *    - _debug()
	 *    - _checkIP()
	 * +----------------------------------------------------+
	 *  DynDNS Dynamic  - Last Tested: 12 July 2005
	 *  DynDNS Static   - Last Tested: NEVER
	 *  DynDNS Custom   - Last Tested: NEVER
	 *  No-IP           - Last Tested: 20 July 2008
	 *  HN.org          - Last Tested: 12 July 2005
	 *  EasyDNS         - Last Tested: 20 July 2008
	 *  DHS             - Last Tested: 12 July 2005
	 *  ZoneEdit        - Last Tested: NEVER
	 *  Dyns            - Last Tested: NEVER
	 *  ODS             - Last Tested: 02 August 2005
	 *  FreeDNS         - Last Tested: 01 May 2016
	 *  FreeDNS IPv6    - Last Tested: 01 May 2016
	 *  Loopia          - Last Tested: NEVER
	 *  StaticCling     - Last Tested: 27 April 2006
	 *  DNSexit         - Last Tested: 20 July 2008
	 *  OpenDNS         - Last Tested: 4 August 2008
	 *  Namecheap       - Last Tested: 31 August 2010
	 *  HE.net          - Last Tested: 7 July 2013
	 *  HE.net IPv6     - Last Tested: 7 July 2013
	 *  HE.net Tunnel   - Last Tested: 28 June 2011
	 *  SelfHost        - Last Tested: 26 December 2011
	 *  Amazon Route 53 - Last Tested: 04 February 2017
	 *  DNS-O-Matic     - Last Tested: 9 September 2010
	 *  CloudFlare      - Last Tested: 05 September 2016
	 *  CloudFlare IPv6 - Last Tested: 17 July 2016
	 *  Eurodns         - Last Tested: 27 June 2013
	 *  GratisDNS       - Last Tested: 15 August 2012
	 *  OVH DynHOST     - Last Tested: NEVER
	 *  City Network    - Last Tested: 13 November 2013
	 *  GleSYS          - Last Tested: 3 February 2015
	 *  DNSimple        - Last Tested: 09 February 2015
	 *  Google Domains  - Last Tested: 27 April 2015
	 *  DNS Made Easy   - Last Tested: 27 April 2015
	 *  SPDYN           - Last Tested: 02 July 2016
	 *  SPDYN IPv6      - Last Tested: 02 July 2016
	 *  All-Inkl        - Last Tested: 12 November 2016
	 *  DuiaDNS         - Last Tested: 25 November 2016
	 *  DuiaDNS IPv6    - Last Tested: 25 November 2016
	 * +====================================================+
	 *
	 * @author 	E.Kristensen
	 * @link    	http://www.idylldesigns.com/projects/phpdns/
	 * @version 	0.8
	 * @updated	13 October 05 at 21:02:42 GMT
	 *
	 * DNSexit/OpenDNS support and multiwan extension for pfSense by Ermal Luçi
	 * Custom DNS support by Matt Corallo
	 *
	 */

	class updatedns {
		var $_cacheFile;
		var $_cacheFile_v6;
		var $_debugFile;
		var $_UserAgent = 'phpDynDNS/0.7';
		var $_errorVerbosity = 0;
		var $_dnsService;
		var $_dnsUser;
		var $_dnsPass;
		var $_dnsHost;
		var $_dnsDomain;
		var $_FQDN;
		var $_dnsIP;
		var $_dnsWildcard;
		var $_dnsProxied;
		var $_dnsMX;
		var $_dnsBackMX;
		var $_dnsServer;
		var $_dnsPort;
		var $_dnsUpdateURL;
		var $_dnsZoneID;
		var $_dnsTTL;
		var $status;
		var $_debugID;
		var $_if;
		var $_dnsResultMatch;
		var $_dnsRequestIf;
		var $_dnsRequestIfIP;
		var $_dnsVerboseLog;
		var $_curlIpresolveV4;
		var $_curlSslVerifypeer;
		var $_dnsMaxCacheAgeDays;
		var $_dnsDummyUpdateDone;
		var $_forceUpdateNeeded;
		var $_useIPv6;

		/*
		 * Public Constructor Function (added 12 July 05) [beta]
		 *   - Gets the dice rolling for the update.
		 *   - $dnsResultMatch should only be used with $dnsService = 'custom'
		 *   -  $dnsResultMatch is parsed for '%IP%', which is the IP the provider was updated to,
		 *   -  it is otherwise expected to be exactly identical to what is returned by the Provider.
		 *   - $dnsUser, and $dnsPass indicate HTTP Auth for custom DNS, if they are needed in the URL (GET Variables), include them in $dnsUpdateURL.
		 *   - $For custom requests, $dnsUpdateURL is parsed for '%IP%', which is replaced with the new IP.
		 */
		function updatedns ($dnsService = '', $dnsHost = '', $dnsDomain = '', $dnsUser = '', $dnsPass = '',
					$dnsWildcard = 'OFF', $dnsProxied = false, $dnsMX = '', $dnsIf = '', $dnsBackMX = '',
					$dnsServer = '', $dnsPort = '', $dnsUpdateURL = '', $forceUpdate = false,
					$dnsZoneID ='', $dnsTTL='', $dnsResultMatch = '', $dnsRequestIf = '',
					$dnsID = '', $dnsVerboseLog = false, $curlIpresolveV4 = false, $curlSslVerifypeer = true) {

			global $config, $g, $dyndns_split_domain_types;
			if (in_array($dnsService, $dyndns_split_domain_types)) {
				$this->_FQDN = $dnsHost . "." . $dnsDomain;
			} else {
				$this->_FQDN = $dnsHost;
			}

			$this->_cacheFile = "{$g['conf_path']}/dyndns_{$dnsIf}{$dnsService}" . escapeshellarg($this->_FQDN) . "{$dnsID}.cache";
			$this->_cacheFile_v6 = "{$g['conf_path']}/dyndns_{$dnsIf}{$dnsService}" . escapeshellarg($this->_FQDN) . "{$dnsID}_v6.cache";
			$this->_debugFile = "{$g['varetc_path']}/dyndns_{$dnsIf}{$dnsService}" . escapeshellarg($this->_FQDN) . "{$dnsID}.debug";

			$this->_curlIpresolveV4 = $curlIpresolveV4;
			$this->_curlSslVerifypeer = $curlSslVerifypeer;
			$this->_dnsVerboseLog = $dnsVerboseLog;
			if ($this->_dnsVerboseLog) {
				log_error(gettext("Dynamic DNS: updatedns() starting"));
			}

			$dyndnslck = lock("DDNS".$dnsID, LOCK_EX);

			if (!$dnsService) $this->_error(2);
			switch ($dnsService) {
			case 'freedns':
			case 'freedns-v6':
				if (!$dnsHost) $this->_error(5);
				break;
			case "namecheap":
				if (!$dnsPass) $this->_error(4);
				if (!$dnsHost) $this->_error(5);
				if (!$dnsDomain) $this->_error(5);
				break;
			case "cloudflare-v6":
			case "cloudflare":
			case "gratisdns":
				if (!$dnsUser) $this->_error(3);
				if (!$dnsPass) $this->_error(4);
				if (!$dnsHost) $this->_error(5);
				if (!$dnsDomain) $this->_error(5);
				break;
			case 'route53':
				if (!$dnsZoneID) $this->_error(8);
				if (!$dnsTTL) $this->_error(9);
				break;
			case 'custom':
				if (!$dnsUpdateURL) $this->_error(7);
				break;
			default:
				if (!$dnsUser) $this->_error(3);
				if (!$dnsPass) $this->_error(4);
				if (!$dnsHost) $this->_error(5);
			}

			switch ($dnsService) {
				case 'he-net-v6':
				case 'custom-v6':
				case 'spdyn-v6':
				case 'duiadns-v6':
				case 'freedns-v6':
				case 'cloudflare-v6':
					$this->_useIPv6 = true;
					break;
				default:
					$this->_useIPv6 = false;
			}
			$this->_dnsService = strtolower($dnsService);
			$this->_dnsUser = $dnsUser;
			$this->_dnsPass = base64_decode($dnsPass);
			$this->_dnsHost = $dnsHost;
			$this->_dnsDomain = $dnsDomain;
			$this->_dnsServer = $dnsServer;
			$this->_dnsPort = $dnsPort;
			$this->_dnsWildcard = $dnsWildcard;
			$this->_dnsProxied = $dnsProxied;
			$this->_dnsMX = $dnsMX;
			$this->_dnsZoneID = $dnsZoneID;
			$this->_dnsTTL = $dnsTTL;
			$this->_if = get_failover_interface($dnsIf);
			$this->_checkIP();
			$this->_dnsUpdateURL = $dnsUpdateURL;
			$this->_dnsResultMatch = $dnsResultMatch;
			$this->_dnsRequestIf = get_failover_interface($dnsRequestIf);
			if ($this->_dnsVerboseLog) {
				log_error(sprintf(gettext('Dynamic DNS (%1$s): running get_failover_interface for %2$s. found %3$s'), $this->_FQDN, $dnsRequestIf, $this->_dnsRequestIf));
			}
			$this->_dnsRequestIfIP = get_interface_ip($dnsRequestIf);
			$this->_dnsMaxCacheAgeDays = 25;
			$this->_dnsDummyUpdateDone = false;
			$this->_forceUpdateNeeded = $forceUpdate;

			// Ensure that we were able to lookup the IP
			if (!is_ipaddr($this->_dnsIP)) {
				log_error(sprintf(gettext('Dynamic DNS (%1$s) There was an error trying to determine the public IP for interface - %2$s (%3$s %4$s).'), $this->_FQDN, $dnsIf, $this->_if, $this->_dnsIP));
				unlock($dyndnslck);
				return;
			}

			$this->_debugID = rand(1000000, 9999999);

			if ($forceUpdate == false && $this->_detectChange() == false) {
				$this->_error(10);
			} else {
				switch ($this->_dnsService) {
					case 'glesys':
					case 'dnsomatic':
					case 'dyndns':
					case 'dyndns-static':
					case 'dyndns-custom':
					case 'dhs':
					case 'noip':
					case 'noip-free':
					case 'easydns':
					case 'hn':
					case 'zoneedit':
					case 'dyns':
					case 'ods':
					case 'freedns':
					case 'freedns-v6':
					case 'loopia':
					case 'staticcling':
					case 'dnsexit':
					case 'custom':
					case 'custom-v6':
					case 'opendns':
					case 'namecheap':
					case 'he-net':
					case 'he-net-v6':
					case 'duiadns':
					case 'duiadns-v6':
					case 'selfhost':
					case 'he-net-tunnelbroker':
					case 'route53':
					case 'cloudflare':
					case 'cloudflare-v6':
					case 'eurodns':
					case 'gratisdns':
					case 'ovh-dynhost':
					case 'citynetwork':
					case 'dnsimple':
					case 'googledomains':
					case 'dnsmadeeasy':
					case 'spdyn':
					case 'spdyn-v6':
					case 'all-inkl':
						$this->_update();
						if ($this->_dnsDummyUpdateDone == true) {
							// If a dummy update was needed, then sleep a while and do the update again to put the proper address back.
							// Some providers (e.g. No-IP free accounts) need to have at least 1 address change every month.
							// If the address has not changed recently, or the user did "Force Update", then the code does
							// a dummy address change for providers like this.
							sleep(10);
							$this->_update();
						}
						break;
					default:
						$this->_error(6);
						break;
				}
			}

			unlock($dyndnslck);
		}

		/*
		 * Private Function (added 12 July 05) [beta]
		 *   Send Update To Selected Service.
		 */
		function _update() {

			if ($this->_dnsVerboseLog) {
				log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): _update() starting.'), $this->_dnsService, $this->_FQDN));
			}

			if (strstr($this->_dnsRequestIf, "_vip")) {
				$parentif = get_configured_vip_interface($this->_dnsRequestIf);
				$realparentif = convert_friendly_interface_to_real_interface_name($parentif);
			} else {
				$realparentif = $this->_dnsRequestIf;
			}

			$ch = curl_init();

			if ($this->_useIPv6 == false) {
				curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
			}

			if ($this->_dnsService != 'ods') {
				curl_setopt($ch, CURLOPT_USERAGENT, $this->_UserAgent);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
				curl_setopt($ch, CURLOPT_INTERFACE, 'if!' . $realparentif);
				curl_setopt($ch, CURLOPT_TIMEOUT, 120); // Completely empirical
			}

			switch ($this->_dnsService) {
				case 'glesys':
					$needsIP = TRUE;
					$server = 'https://api.glesys.com/domain/updaterecord/format/json';
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$post_data['recordid'] = $this->_FQDN;
					$post_data['data'] = $this->_dnsIP;
					curl_setopt($ch, CURLOPT_URL, $server);
					curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
					break;
				case 'dyndns':
				case 'dyndns-static':
				case 'dyndns-custom':
					$needsIP = FALSE;
					if (isset($this->_dnsWildcard) && $this->_dnsWildcard != "OFF") {
						$this->_dnsWildcard = "ON";
					}
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://members.dyndns.org/nic/update";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port . '?system=dyndns&hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP . '&wildcard='.$this->_dnsWildcard . '&mx=' . $this->_dnsMX . '&backmx=NO');
					break;
				case 'dhs':
					// DHS is disabled in the GUI because the following doesn't work.
					$needsIP = TRUE;
					$post_data['hostscmd'] = 'edit';
					$post_data['hostscmdstage'] = '2';
					$post_data['type'] = '4';
					$post_data['updatetype'] = 'Online';
					$post_data['mx'] = $this->_dnsMX;
					$post_data['mx2'] = '';
					$post_data['txt'] = '';
					$post_data['offline_url'] = '';
					$post_data['cloak'] = 'Y';
					$post_data['cloak_title'] = '';
					$post_data['ip'] = $this->_dnsIP;
					$post_data['domain'] = 'dyn.dhs.org';
					$post_data['hostname'] = $this->_dnsHost;
					$post_data['submit'] = 'Update';
					$server = "https://members.dhs.org/nic/hosts";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server . $port);
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
					break;
				case 'noip':
				case 'noip-free':
					$needsIP = TRUE;
					$server = "https://dynupdate.no-ip.com/ducupdate.php";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					if (($this->_dnsService == "noip-free") &&
					    ($this->_forceUpdateNeeded == true) &&
					    ($this->_dnsDummyUpdateDone == false)) {
						// Update the IP to a dummy value to force No-IP free accounts to see a change.
						$iptoset = "192.168.1.1";
						$this->_dnsDummyUpdateDone = true;
						log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): Processing dummy update on No-IP free account. IP temporarily set to %3$s'), $this->_dnsService, $this->_dnsHost, $iptoset));
					} else {
						$iptoset = $this->_dnsIP;
					}
					curl_setopt($ch, CURLOPT_URL, $server . $port . '?username=' . urlencode($this->_dnsUser) . '&pass=' . urlencode($this->_dnsPass) . '&h[]=' . $this->_dnsHost.'&ip=' . $iptoset);
					break;
				case 'easydns':
					$needsIP = TRUE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://members.easydns.com/dyn/dyndns.php";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server . $port . '?hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP . '&wildcard=' . $this->_dnsWildcard . '&mx=' . $this->_dnsMX . '&backmx=' . $this->_dnsBackMX);
					break;
				case 'hn':
					$needsIP = TRUE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "http://dup.hn.org/vanity/update";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server . $port . '?ver=1&IP=' . $this->_dnsIP);
					break;
				case 'zoneedit':
					$needsIP = FALSE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);

					$server = "https://dynamic.zoneedit.com/auth/dynamic.html";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, "{$server}{$port}?host=" . $this->_dnsHost . '&dnsto=' . $this->_dnsIP);
					break;
				case 'dyns':
					$needsIP = FALSE;
					$server = "http://www.dyns.net/postscript011.php";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server . $port . '?username=' . urlencode($this->_dnsUser) . '&password=' . $this->_dnsPass . '&host=' . $this->_dnsHost);
					break;
				case 'ods':
					$needsIP = FALSE;
					$misc_errno = 0;
					$misc_error = "";
					$server = "ods.org";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					$this->con['socket'] = fsockopen("{$server}{$port}", "7070", $misc_errno, $misc_error, 30);
					/* Check that we have connected */
					if (!$this->con['socket']) {
						print "error! could not connect.";
						break;
					}
					/* Here is the loop. Read the incoming data (from the socket connection) */
					while (!feof($this->con['socket'])) {
						$this->con['buffer']['all'] = trim(fgets($this->con['socket'], 4096));
						$code = substr($this->con['buffer']['all'], 0, 3);
						sleep(1);
						switch ($code) {
							case 100:
								fputs($this->con['socket'], "LOGIN ".$this->_dnsUser." ".$this->_dnsPass."\n");
								break;
							case 225:
								fputs($this->con['socket'], "DELRR ".$this->_dnsHost." A\n");
								break;
							case 901:
								fputs($this->con['socket'], "ADDRR ".$this->_dnsHost." A ".$this->_dnsIP."\n");
								break;
							case 795:
								fputs($this->con['socket'], "QUIT\n");
								break;
						}
					}
					$this->_checkStatus(0, $code);
					break;
				case 'freedns':
				case 'freedns-v6':
					$needIP = FALSE;
					curl_setopt($ch, CURLOPT_URL, 'https://freedns.afraid.org/dynamic/update.php?' . $this->_dnsPass);
					break;
				case 'dnsexit':
					$needsIP = TRUE;
					curl_setopt($ch, CURLOPT_URL, 'https://www.dnsexit.com/RemoteUpdate.sv?login='.$this->_dnsUser. '&password='.$this->_dnsPass.'&host='.$this->_dnsHost.'&myip='.$this->_dnsIP);
					break;
				case 'loopia':
					$needsIP = TRUE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					curl_setopt($ch, CURLOPT_URL, 'https://dns.loopia.se/XDynDNSServer/XDynDNS.php?hostname='.$this->_dnsHost.'&myip='.$this->_dnsIP);
					break;
				case 'opendns':
					$needsIP = FALSE;
					if (isset($this->_dnsWildcard) && $this->_dnsWildcard != "OFF") $this->_dnsWildcard = "ON";
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://updates.opendns.com/nic/update?hostname=". $this->_dnsHost;
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port);
					break;

				case 'staticcling':
					$needsIP = FALSE;
					curl_setopt($ch, CURLOPT_URL, 'https://www.staticcling.org/update.html?login='.$this->_dnsUser.'&pass='.$this->_dnsPass);
					break;
				case 'dnsomatic':
					/* Example syntax
						https://username:password@updates.dnsomatic.com/nic/update?hostname=yourhostname&myip=ipaddress&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG
					*/
					$needsIP = FALSE;
					if (isset($this->_dnsWildcard) && $this->_dnsWildcard != "OFF") {
						$this->_dnsWildcard = "ON";
					}
					/*
					Reference: https://www.dnsomatic.com/wiki/api
						DNS-O-Matic usernames are 3-25 characters.
						DNS-O-Matic passwords are 6-20 characters.
						All ASCII letters and numbers accepted.
						Dots, dashes, and underscores allowed, but not at the beginning or end of the string.
					Required: "rawurlencode" http://www.php.net/manual/en/function.rawurlencode.php
						Encodes the given string according to RFC 3986.
					*/
					$server = "https://" . rawurlencode($this->_dnsUser) . ":" . rawurlencode($this->_dnsPass) . "@updates.dnsomatic.com/nic/update?hostname=";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server . $this->_dnsHost . '&myip=' . $this->_dnsIP . '&wildcard='.$this->_dnsWildcard . '&mx=' . $this->_dnsMX . '&backmx=NOCHG');
					break;
				case 'namecheap':
					/* Example:
						https://dynamicdns.park-your-domain.com/update?host=[host_name]&domain=[domain.com]&password=[domain_password]&ip=[your_ip]
					*/
					$needsIP = FALSE;
					$dnspass = trim($this->_dnsPass);
					$server = "https://dynamicdns.park-your-domain.com/update?host={$this->_dnsHost}&domain={$this->_dnsDomain}&password={$dnspass}&ip={$this->_dnsIP}";
					curl_setopt($ch, CURLOPT_URL, $server);
					break;
				case 'duiadns':
				case 'duiadns-v6':
					$needsIP = FALSE;
					$server = "https://ipv4.duiadns.net/dyndns.duia?";
					curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
					curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser . ':' . $this->_dnsPass);
					curl_setopt($ch, CURLOPT_URL, $server . 'hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP);
					break;
				case 'he-net':
				case 'he-net-v6':
					$needsIP = FALSE;
					$server = "https://dyn.dns.he.net/nic/update?";
					curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
					curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
					curl_setopt($ch, CURLOPT_URL, $server . 'hostname=' . $this->_dnsHost . '&password=' . $this->_dnsPass . '&myip=' . $this->_dnsIP);
					break;
				case 'he-net-tunnelbroker':
					$needsIP = FALSE;
					$server = "https://ipv4.tunnelbroker.net/ipv4_end.php?";
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser . ':' . $this->_dnsPass);
					curl_setopt($ch, CURLOPT_URL, $server . 'tid=' . $this->_dnsHost);
					break;
				case 'selfhost':
					$needsIP = FALSE;
					if (isset($this->_dnsWildcard) && $this->_dnsWildcard != "OFF") {
						$this->_dnsWildcard = "ON";
					}
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://carol.selfhost.de/nic/update";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port . '?system=dyndns&hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP . '&wildcard='.$this->_dnsWildcard . '&mx=' . $this->_dnsMX . '&backmx=NO');
					break;
				case 'route53':		
					require_once("r53.class");
					$r53 = new Route53($this->_dnsUser, $this->_dnsPass);
					list($r53_regionId, $r53_zoneId) = split('/', $this->_dnsZoneID);
					$apiurl = $r53->getApiUrl($r53_zoneId);
					$xmlreq = $r53->getRequestBody($this->_dnsHost, $this->_dnsIP, $this->_dnsTTL);
					$httphead = $r53->getHttpPostHeaders($r53_zoneId, $r53_regionId, hash("sha256",$xmlreq));
					curl_setopt($ch, CURLOPT_HTTPHEADER, $httphead);
					if($this->_dnsVerboseLog){
						log_error(sprintf("Sending reuquest to: %s", $apiurl));
						foreach($httphead as $hv){
							log_error(sprintf("Header: %s", $hv));
						}
						log_error(sprintf("XMLPOST: %s", $xmlreq));
					}
					curl_setopt($ch, CURLOPT_URL, $apiurl);
					curl_setopt($ch, CURLOPT_POSTFIELDS, $xmlreq);
					break;
				case 'custom':
				case 'custom-v6':
					if (strstr($this->dnsUpdateURL, "%IP%")) {$needsIP = TRUE;} else {$needsIP = FALSE;}
					if ($this->_dnsUser != '') {
						if ($this->_curlIpresolveV4) {
							curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
						}
						if ($this->_curlSslVerifypeer) {
							curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);
						} else {
							curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
						}
						curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
						curl_setopt($ch, CURLOPT_USERPWD, "{$this->_dnsUser}:{$this->_dnsPass}");
					}
					$server = str_replace("%IP%", $this->_dnsIP, $this->_dnsUpdateURL);
					if ($this->_dnsVerboseLog) {
						log_error(sprintf(gettext("Sending request to: %s"), $server));
					}
					curl_setopt($ch, CURLOPT_URL, $server);
					break;
				case 'cloudflare-v6':
				case 'cloudflare':
					$isv6 = ($this->_dnsService === 'cloudflare-v6');
					$recordType = $isv6 ? "AAAA" : "A";
					$needsIP = TRUE;
					$dnsServer ='api.cloudflare.com';
					$dnsHost = str_replace(' ', '', $this->_dnsHost);

					curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
					curl_setopt($ch, CURLOPT_HTTPHEADER, array(
						'X-Auth-Email: '.$this->_dnsUser.'',
						'X-Auth-Key: '.$this->_dnsPass.'',
						'Content-Type: application/json'
					));

					// Get zone ID
					$getZoneId = "https://{$dnsServer}/client/v4/zones/?name={$this->_dnsDomain}";
					curl_setopt($ch, CURLOPT_URL, $getZoneId);
					$output = json_decode(curl_exec($ch));
					$zone = $output->result[0]->id;
					if ($zone) { // If zone ID was found get host ID
						$getHostId = "https://{$dnsServer}/client/v4/zones/{$zone}/dns_records?name={$this->_FQDN}&type={$recordType}";
						curl_setopt($ch, CURLOPT_URL, $getHostId);
						$output = json_decode(curl_exec($ch));
						$host = $output->result[0]->id;
						if ($host) { // If host ID was found update host
							$hostData = array(
								"content" => "{$this->_dnsIP}",
								"type" => "{$recordType}",
								"proxied" => $this->_dnsProxied,
								"name" => "{$this->_dnsHost}"
							);
							$data_json = json_encode($hostData);
							$updateHostId = "https://{$dnsServer}/client/v4/zones/{$zone}/dns_records/{$host}";
							curl_setopt($ch, CURLOPT_URL, $updateHostId);
							curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
							curl_setopt($ch, CURLOPT_POSTFIELDS, $data_json);
						}
					}
					break;
				case 'eurodns':
					$needsIP = TRUE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://update.eurodyndns.org/update/";
					$port = "";
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port . '?hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP);
					break;
				case 'gratisdns':
					$needsIP = TRUE;
					$server = "https://ssl.gratisdns.dk/ddns.phtml";
					curl_setopt($ch, CURLOPT_URL, $server . '?u=' . $this->_dnsUser . '&p=' . $this->_dnsPass . '&h=' . $this->_dnsHost . '&d=' . $this->_dnsDomain . '&i=' . $this->_dnsIP);
					break;
				case 'ovh-dynhost':
					$needsIP = FALSE;
					if (isset($this->_dnsWildcard) && $this->_dnsWildcard != "OFF") $this->_dnsWildcard = "ON";
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://www.ovh.com/nic/update";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port . '?system=dyndns&hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP . '&wildcard='.$this->_dnsWildcard . '&mx=' . $this->_dnsMX . '&backmx=NO');
					break;
				case 'citynetwork':
					$needsIP = TRUE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = 'https://dyndns.citynetwork.se/nic/update';
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port . '?hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP);
					break;
				case 'dnsimple':
					/* Uses DNSimple's REST API
					   Requires username and Account API token passed in header
					   Piggybacks on Route 53's ZoneID field for DNSimple record ID
					   Data sent as JSON */
					$needsIP = TRUE;
					$server = 'https://api.dnsimple.com/v1/domains/';
					$token = $this->_dnsUser . ':' . $this->_dnsPass;
					$jsondata = '{"record":{"content":"' . $this->_dnsIP . '","ttl":"' . $this->_dnsTTL . '"}}';
					curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
					curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json', 'Content-Type: application/json', 'X-DNSimple-Token: ' . $token));
					curl_setopt($ch, CURLOPT_URL, $server . $this->_dnsHost . '/records/' . $this->_dnsZoneID);
					curl_setopt($ch, CURLOPT_POSTFIELDS, $jsondata);
					break;
				case 'googledomains':
					$needsIP = FALSE;
					$post_data['username:password'] = $this->_dnsUser . ':' . $this->_dnsPass;
					$post_data['hostname'] = $this->_dnsHost;
					$post_data['myip'] = $this->_dnsIP;
					$post_data['offline'] = 'no';
					$server = "https://domains.google.com/nic/update";
					$port = "";
					curl_setopt($ch, CURLOPT_URL, 'https://domains.google.com/nic/update');
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
					break;
				case 'dnsmadeeasy':
					$needsIP = TRUE;
					$server = "https://cp.dnsmadeeasy.com/servlet/updateip";
					curl_setopt($ch, CURLOPT_URL, $server . '?username=' . $this->_dnsUser . '&password=' . $this->_dnsPass . '&id=' . $this->_dnsHost . '&ip=' . $this->_dnsIP);
					break;
				case 'spdyn':
				case 'spdyn-v6':
					$needsIP = FALSE;
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					$server = "https://update.spdyn.de/nic/update";
					$port = "";
					if ($this->_dnsServer) {
						$server = $this->_dnsServer;
					}
					if ($this->_dnsPort) {
						$port = ":" . $this->_dnsPort;
					}
					curl_setopt($ch, CURLOPT_URL, $server .$port . '?hostname=' . $this->_dnsHost . '&myip=' . $this->_dnsIP);
					break;
				case 'all-inkl':
					$needsIP = FALSE;
					$server = 'https://dyndns.kasserver.com/';
					curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser.':'.$this->_dnsPass);
					curl_setopt($ch, CURLOPT_URL, $server . 'myip=' . $this->_dnsIP);
					break;
				default:
					break;
			}
			if ($this->_dnsService != 'ods') {
				curl_setopt($ch, CURLOPT_HEADER, 1);
				$response = curl_exec($ch);
				$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
				$header = substr($response, 0, $header_size);
				$data = substr($response, $header_size);
				$this->_checkStatus($ch, $data, $header);
				@curl_close($ch);
			}
		}

		/*
		 * Private Function (added 12 July 2005) [beta]
		 *   Retrieve Update Status
		 */
		function _checkStatus($ch, $data, $header) {
			if ($this->_dnsVerboseLog) {
				log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): _checkStatus() starting.'), $this->_dnsService, $this->_FQDN));
			}
			$successful_update = false;
			$success_str = "(" . gettext("Success") . ") ";
			$error_str = "(" . gettext("Error") . ") ";
			$status_intro = "phpDynDNS ({$this->_dnsHost}): ";

			if ($this->_dnsService != 'ods' && @curl_error($ch)) {
				$status = gettext("Curl error occurred:") . " " . curl_error($ch);
				log_error($status);
				$this->status = $status;
				return;
			}
			switch ($this->_dnsService) {
				case 'glesys':
					$status_intro = "GleSYS ({$this->_dnsHost}): ";
					if (preg_match('/Record updated/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " {$data}");
						$this->_debug($data);
					}
					break;
				case 'dnsomatic':
					$status_intro = "DNS-O-Matic ({$this->_dnsHost}): ";
					if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . gettext("The DNS-O-Matic username or password specified are incorrect. No updates will be distributed to services until this is resolved.");
					} else if (preg_match('/notfqdn /i', $data)) {
						$status = $status_intro . gettext("The hostname specified is not a fully-qualified domain name. If no hostnames included, notfqdn will be returned once.");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . gettext("The hostname passed could not be matched to any services configured. The service field will be blank in the return code.");
					} else if (preg_match('/numhost/i', $data)) {
						$status = $status_intro . gettext("Up to 20 hosts my be updated. numhost is returned if attempting to update more than 20 or update a round-robin.");
					} else if (preg_match('/abuse/i', $data)) {
						$status = $status_intro . gettext("The hostname is blocked for update abuse.");
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/dnserr/i', $data)) {
						$status = $status_intro . gettext("DNS error encountered. Stop updating for 30 minutes.");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " {$data}");
						$this->_debug($data);
					}
					break;
				case 'citynetwork':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . $error_str . gettext("No such host");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " {$data}");
						$this->_debug($data);
					}
					break;
				case 'ovh-dynhost':
				case 'dyndns':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/noauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " {$data}");
						$this->_debug($data);
					}
					break;
				case 'dyndns-static':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!");
						$successful_update = true;
					} else if (preg_match('/noauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " {$data}");
						$this->_debug($data);
					}
					break;
				case 'dyndns-custom':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!");
						$successful_update = true;
					} else if (preg_match('/noauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " {$data}");
						$this->_debug($data);
					}
					break;
				case 'dhs':
					break;
				case 'noip':
				case 'noip-free':
					list($ip, $code) = explode(":", $data);
					switch ($code) {
						case 0:
							$status = $status_intro . $success_str . gettext("IP address is current, no update performed.");
							$successful_update = true;
							break;
						case 1:
							$status = $status_intro . $success_str . gettext("DNS hostname update successful.");
							$successful_update = true;
							break;
						case 2:
							$status = $status_intro . $error_str . gettext("Hostname supplied does not exist.");
							break;
						case 3:
							$status = $status_intro . $error_str . gettext("Invalid Username.");
							break;
						case 4:
							$status = $status_intro . $error_str . gettext("Invalid Password.");
							break;
						case 5:
							$status = $status_intro . $error_str . gettext("Too many updates sent.");
							break;
						case 6:
							$status = $status_intro . $error_str . gettext("Account disabled due to violation of No-IP terms of service.");
							break;
						case 7:
							$status = $status_intro . $error_str . gettext("Invalid IP. IP Address submitted is improperly formatted or is a private IP address or is on a blacklist.");
							break;
						case 8:
							$status = $status_intro . $error_str . gettext("Disabled / Locked Hostname.");
							break;
						case 9:
							$status = $status_intro . $error_str . gettext("Host updated is configured as a web redirect and no update was performed.");
							break;
						case 10:
							$status = $status_intro . $error_str . gettext("Group supplied does not exist.");
							break;
						case 11:
							$status = $status_intro . $success_str . gettext("DNS group update is successful.");
							$successful_update = true;
							break;
						case 12:
							$status = $status_intro . $success_str . gettext("DNS group is current, no update performed.");
							$successful_update = true;
							break;
						case 13:
							$status = $status_intro . $error_str . gettext("Update client support not available for supplied hostname or group.");
							break;
						case 14:
							$status = $status_intro . $error_str . gettext("Hostname supplied does not have offline settings configured.");
							break;
						case 99:
							$status = $status_intro . $error_str . gettext("Client disabled. Client should exit and not perform any more updates without user intervention.");
							break;
						case 100:
							$status = $status_intro . $error_str . gettext("Client disabled. Client should exit and not perform any more updates without user intervention.");
							break;
						default:
							$status = $status_intro . "(" . gettext("Unknown Response") . ")";
							$this->_debug(gettext("Unknown Response:") . " " . $data);
							break;
					}
					break;
				case 'easydns':
					if (preg_match('/NOACCESS/i', $data)) {
						$status = $status_intro . $error_str . gettext("Authentication Failed: Username and/or Password was Incorrect.");
					} else if (preg_match('/NOSERVICE/i', $data)) {
						$status = $status_intro . $error_str . gettext("No Service: Dynamic DNS Service has been disabled for this domain.");
					} else if (preg_match('/ILLEGAL INPUT/i', $data)) {
						$status = $status_intro . $error_str . gettext("Illegal Input: Self-Explanatory");
					} else if (preg_match('/TOOSOON/i', $data)) {
						$status = $status_intro . $error_str . gettext("Too Soon: Not Enough Time Has Elapsed Since Last Update");
					} else if (preg_match('/NOERROR/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Updated Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'hn':
					/* FIXME: add checks */
					break;
				case 'zoneedit':
					if (preg_match('/799/i', $data)) {
						$status = $status_intro . "(" . gettext("Error 799") . ") " . gettext("Update Failed!");
					} else if (preg_match('/700/i', $data)) {
						$status = $status_intro . "(" . gettext("Error 700") . ") " . gettext("Update Failed!");
					} else if (preg_match('/200/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else if (preg_match('/201/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'dyns':
					if (preg_match("/400/i", $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - The URL was malformed. Required parameters were not provided.");
					} else if (preg_match('/402/i', $data)) {
						$status = $status_intro . $error_str . gettext("Update Too Soon - Attempted to update too quickly since last change.");
					} else if (preg_match('/403/i', $data)) {
						$status = $status_intro . $error_str . gettext("Database Error - There was a server-sided database error.");
					} else if (preg_match('/405/i', $data)) {
						$status = $status_intro . $error_str . sprintf(gettext('Hostname Error - The hostname (%1$s) doesn\'t belong to user (%2$s).'), $this->_dnsHost, $this->_dnsUser);
					} else if (preg_match('/200/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'ods':
					if (preg_match("/299/i", $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'freedns':
				case 'freedns-v6':
					if (preg_match("/has not changed./i", $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match("/Updated/i", $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'dnsexit':
					if (preg_match("/is the same/i", $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match("/Success/i", $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'loopia':
					if (preg_match("/nochg/i", $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match("/good/i", $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!");
						$successful_update = true;
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'opendns':
					if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not a valid username or password!");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . $error_str . gettext("Hostname specified does not exist.");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/yours/i', $data)) {
						$status = $status_intro . $error_str . gettext("Hostname specified exists, but not under the username specified.");
					} else if (preg_match('/abuse/i', $data)) {
						$status = $status_intro . $error_str . gettext("Updating too frequently, considered abuse.");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'staticcling':
					if (preg_match("/invalid ip/i", $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - The IP provided was invalid.");
					} else if (preg_match('/required info missing/i', $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - Required parameters were not provided.");
					} else if (preg_match('/invalid characters/i', $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - Illegal characters in either the username or the password.");
					} else if (preg_match('/bad password/i', $data)) {
						$status = $status_intro . $error_str . gettext("Invalid password.");
					} else if (preg_match('/account locked/i', $data)) {
						$status = $status_intro . $error_str . gettext("This account has been administratively locked.");
					} else if (preg_match('/update too frequent/i', $data)) {
						$status = $status_intro . $error_str . gettext("Updating too frequently.");
					} else if (preg_match('/DB error/i', $data)) {
						$status = $status_intro . $error_str . gettext("Server side error.");
					} else if (preg_match('/success/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'namecheap':
					$tmp = str_replace("^M", "", $data);
					$ncresponse = @xml2array($tmp);
					if (preg_match("/internal server error/i", $data)) {
						$status = $status_intro . $error_str . gettext("Server side error.");
					} else if (preg_match("/request is badly formed/i", $data)) {
						$status = $status_intro . $error_str . gettext("Badly Formed Request (check the settings).");
					} else if ($ncresponse['interface-response']['ErrCount'] === "0") {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else if (is_numeric($ncresponse['interface-response']['ErrCount']) && ($ncresponse['interface-response']['ErrCount'] > 0)) {
						$status = $status_intro . $error_str . implode(", ", $ncresponse["interface-response"]["errors"]);
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'duiadns':
				case 'duiadns-v6':
					if (preg_match("/error/i", $data)) {
						$status = $status_intro . $error_str . gettext("Server side error.");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - A hostname was not provided.");
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("Invalid username or password.");
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address.");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'he-net':
				case 'he-net-v6':
					if (preg_match("/badip/i", $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - The IP provided was invalid.");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - A hostname was not provided.");
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("Invalid username or password.");
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address.");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'he-net-tunnelbroker':
					/*
					-ERROR: Missing parameter(s).
					-ERROR: Invalid API key or password
					-ERROR: Tunnel not found
					-ERROR: Another tunnel exists for this IP.
					-ERROR: This tunnel is already associated with this IP address
					+OK: Tunnel endpoint updated to: x.x.x.x
					*/
					if (preg_match("/Missing parameter/i", $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - Missing/Invalid Parameters.");
					} else if (preg_match('/Tunnel not found/i', $data)) {
						$status = $status_intro . $error_str . gettext("Bad Request - Invalid Tunnel ID.");
					} else if (preg_match('/Invalid API key or password/i', $data)) {
						$status = $status_intro . $error_str . gettext("Invalid username or password.");
					} else if (preg_match('/OK:/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else if (preg_match('/This tunnel is already associated with this IP address/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address.");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'selfhost':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address.");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/noauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'route53':
					if(preg_match('/ErrorResponse/', $data)){
						$status = $status_intro . $error_str . gettext("Route53 API call failed");
						log_error(sprintf("error message: %s", $data));
						$status_update = false;
					} else {
						$status = $status_intro . $success_str . gettext("IP address changed successfully");
						$successful_update = true;
					}
					break;
				case 'custom':
				case 'custom-v6':
					$successful_update = false;
					if ($this->_dnsResultMatch == "") {
						$successful_update = true;
					} else {
						$this->_dnsResultMatch = str_replace("%IP%", $this->_dnsIP, $this->_dnsResultMatch);
						$matches = preg_split("/(?<!\\\\)\\|/", $this->_dnsResultMatch);
						foreach ($matches as $match) {
							$match= str_replace("\\|", "|", $match);
							if (strcmp($match, trim($data, "\t\n\r")) == 0) {
								$successful_update = true;
							}
						}
						unset ($matches);
					}
					if ($successful_update == true) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
					} else {
						$status = $status_intro . $error_str . gettext("Result did not match.") . " [" . $data . "]";
					}
					break;
				case 'cloudflare-v6':
				case 'cloudflare':
					$output = json_decode($data);
					if ($output->result->content === $this->_dnsIP) {
						$status = $status_intro . $success_str . sprintf(gettext('%1$s updated to %2$s'), $this->_dnsHost, $this->_dnsIP);
						$successful_update = true;
					} elseif ($output->errors[0]->code === 9103) {
						$status = $status_intro . $error_str . gettext("Invalid Credentials! Don't forget to use API Key for password field with CloudFlare.");
					} elseif (($output->success) && (!$output->result[0]->id)) {
						$status = $status_intro . $error_str . gettext("Zone or Host ID was not found, check the hostname.");
					} else {
						$status = $status_intro . gettext("UNKNOWN ERROR") . " - " . $output->errors[0]->message;
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
					}
					break;
				case 'eurodns':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'gratisdns':
					if (preg_match('/Forkerte værdier/i', $data)) {
						$status = $status_intro . $error_str . gettext("Wrong values - Update could not be completed.");
					} else if (preg_match('/Bruger login: Bruger eksistere ikke/i', $data)) {
						$status = $status_intro . $error_str . gettext("Unknown username - User does not exist.");
					} else if (preg_match('/Bruger login: 1Fejl i kodeord/i', $data)) {
						$status = $status_intro . $error_str . gettext("Wrong password - Remember password is case sensitive.");
					} else if (preg_match('/Domæne kan IKKE administreres af bruger/i', $data)) {
						$status = $status_intro . $error_str . gettext("User unable to administer the selected domain.");
					} else if (preg_match('/OK/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'dnsimple':
					/* Responds with HTTP 200 on success.
					   Responds with HTTP 4xx on error.
					   Returns JSON data as body */
;
					if (preg_match("/\s200\sOK/i", $header)) {
						$status = $status_intro . $success_str . gettext("IP Address Updated Successfully!");
						$successful_update = true;
					} else if (preg_match("/\s4\d\d\s/i", $header)) {
						$arrbody = json_decode($data, true);
						$message = $arrbody['message'] . ".";
						if (isset($arrbody['errors']['content'])) {
							foreach ($arrbody['errors']['content'] as $key => $content) {
								$message .= " " . $content . ".";
							}
						}
						$status = $status_intro . $error_str . $message;
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'googledomains':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . $error_str . gettext("Hostname does not exist or DynDNS not enabled");
					} else if (preg_match('/badagent/i', $data)) {
						$status = $status_intro . $error_str . gettext("Bad request");
					} else if (preg_match('/abuse/i', $data)) {
						$status = $status_intro . $error_str . gettext("Dynamic DNS access has been blocked!");
					} else if (preg_match('/911/i', $data)) {
						$status = $status_intro . $error_str . gettext("Error on Google's end, retry in 5 minutes");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'dnsmadeeasy':
					switch ($data) {
						case 'success':
							$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
							$successful_update = true;
							break;
						case 'error-auth':
							$status = $status_intro . $error_str . gettext("Invalid username or password");
							break;
						case 'error-auth-suspend':
							$status = $status_intro . $error_str . gettext("Account suspended");
							break;
						case 'error-auth-voided':
							$status = $status_intro . $error_str . gettext("Account revoked");
							break;
						case 'error-record-invalid':
							$status = $status_intro . $error_str . gettext("Record does not exist in the system. Unable to update record");
							break;
						case 'error-record-auth':
							$status = $status_intro . $error_str . gettext("User does not have access to this record");
							break;
						case 'error-record-ip-same':
							$status = $status_intro . $success_str . gettext("No Change In IP Address");
							$successful_update = true;
							break;
						case 'error-system':
							$status = $status_intro . $error_str . gettext("General system error recognized by the system");
							break;
						case 'error':
							$status = $status_intro . $error_str . gettext("General system error unrecognized by the system");
							break;
						default:
							$status = $status_intro . "(" . gettext("Unknown Response") . ")";
							log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
							$this->_debug($data);
							break;
					}
					break;
				case 'spdyn':
				case 'spdyn-v6':
					if (preg_match('/notfqdn/i', $data)) {
						$status = $status_intro . $error_str . gettext("Not A FQDN!");
					} else if (preg_match('/nohost/i', $data)) {
						$status = $status_intro . $error_str . gettext("No such host");
					} else if (preg_match('/nochg/i', $data)) {
						$status = $status_intro . $success_str . gettext("No Change In IP Address");
						$successful_update = true;
					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
						$successful_update = true;
					} else if (preg_match('/badauth/i', $data)) {
						$status = $status_intro . $error_str . gettext("User Authorization Failed");
					} else {
						$status = $status_intro . "(" . gettext("Unknown Response") . ")";
						log_error($status_intro . gettext("PAYLOAD:") . " " . $data);
						$this->_debug($data);
					}
					break;
				case 'all-inkl':
 					if (preg_match('/good\s'.$this->_dnsIP.'/i', $data)) {
							$status = $status_intro . $success_str . gettext("IP Address Changed Successfully!") . " (" . $this->_dnsIP . ")";
 							$successful_update = true;
 					} else if (preg_match('/good/i', $data)) {
						$status = $status_intro . $error_str . gettext("Result did not match.");
					} else if (preg_match("/\s401\sUnauthorized/i", $header)) {
						$status = $status_intro . $error_str . gettext("Invalid username or password");
					} 
					else {
							$status = $status_intro . "(" . gettext("Unknown Response") . ")";
							log_error($status_intro . gettext("PAYLOAD:") . " " . $header.$data);
 							$this->_debug($data);
 							$this->_debug($header);
 					}
 					break;
			}

			if ($successful_update == true) {
				/* Write WAN IP to cache file */
				$wan_ip = $this->_checkIP();
				if ($this->_useIPv6 == false && $wan_ip > 0) {
					$currentTime = time();
					notify_all_remote(sprintf(gettext('DynDNS updated IP Address on %1$s (%2$s) to %3$s'), convert_real_interface_to_friendly_descr($this->_if), $this->_if, $wan_ip));
					log_error(sprintf(gettext('phpDynDNS: updating cache file %1$s: %2$s'), $this->_cacheFile, $wan_ip));
					@file_put_contents($this->_cacheFile, "{$wan_ip}:{$currentTime}");
				} else {
					@unlink($this->_cacheFile);
				}
				if ($this->_useIPv6 == true && $wan_ip > 0) {
					$currentTime = time();
					notify_all_remote(sprintf(gettext('DynDNS updated IPv6 Address on %1$s (%2$s) to %3$s'), convert_real_interface_to_friendly_descr($this->_if), $this->_if, $wan_ip));
					log_error(sprintf(gettext('phpDynDNS: updating cache file %1$s: %2$s'), $this->_cacheFile_v6, $wan_ip));
					@file_put_contents($this->_cacheFile_v6, "{$wan_ip}|{$currentTime}");
				} else {
					@unlink($this->_cacheFile_v6);
				}
			}
			$this->status = $status;
			log_error($status);
		}

		/*
		 * Private Function (added 12 July 05) [beta]
		 *   Return Error, Set Last Error, and Die.
		 */
		function _error($errorNumber = '1') {
			$err_str = 'phpDynDNS: (' . gettext('ERROR!') . ') ';
			$err_str_r53 = 'Route 53: (' . gettext('Error') . ') ';
			switch ($errorNumber) {
				case 0:
					break;
				case 2:
					$error = $err_str . gettext('No Dynamic DNS Service provider was selected.');
					break;
				case 3:
					$error = $err_str . gettext('No Username Provided.');
					break;
				case 4:
					$error = $err_str . gettext('No Password Provided.');
					break;
				case 5:
					$error = $err_str . gettext('No Hostname Provided.');
					break;
				case 6:
					$error = $err_str . gettext('The Dynamic DNS Service provided is not yet supported.');
					break;
				case 7:
					$error = $err_str . gettext('No Update URL Provided.');
					break;
				case 8:
					$status = $err_str_r53 . gettext("Invalid ZoneID");
					break;
				case 9:
					$status = $err_str_r53 . gettext("Invalid TTL");
					break;
				case 10:
					$error = "phpDynDNS ({$this->_FQDN}): " . sprintf(gettext("No change in my IP address and/or %s days has not passed. Not updating dynamic DNS entry."), $this->_dnsMaxCacheAgeDays);
					break;
				default:
					$error = $err_str . gettext('Unknown Response.');
					/* FIXME: $data isn't in scope here */
					/* $this->_debug($data); */
					break;
			}
			$this->lastError = $error;
			log_error($error);
		}

		/*
		 * Private Function (added 12 July 05) [beta]
		 *   - Detect whether or not IP needs to be updated.
		 *      | Written Specifically for pfSense (https://www.pfsense.org) may
		 *      | work with other systems. pfSense base is FreeBSD.
		 */
		function _detectChange() {
			global $debug;

			if ($debug) {
				log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): _detectChange() starting.'), $this->_dnsService, $this->_FQDN));
			}

			$currentTime = time();

			$wan_ip = $this->_checkIP();
			if ($wan_ip == 0) {
				log_error(sprintf(gettext("Dynamic Dns (%s): Current WAN IP could not be determined, skipping update process."), $this->_FQDN));
				return false;
			}
			$log_error = sprintf(gettext('Dynamic Dns (%1$s): Current WAN IP: %2$s'), $this->_FQDN, $wan_ip) . " ";

			if ($this->_useIPv6 == true) {
				if (file_exists($this->_cacheFile_v6)) {
					$contents = file_get_contents($this->_cacheFile_v6);
					list($cacheIP, $cacheTime) = explode('|', $contents);
					$this->_debug($cacheIP.'/'.$cacheTime);
					$initial = false;
					$log_error .= sprintf(gettext("Cached IPv6: %s"), $cacheIP);
				} else {
					$cacheIP = '::';
					@file_put_contents($this->_cacheFile, "::|{$currentTime}");
					$cacheTime = $currentTime;
					$initial = true;
					$log_error .= gettext("No Cached IPv6 found.");
				}
			} else {
				if (file_exists($this->_cacheFile)) {
					$contents = file_get_contents($this->_cacheFile);
					list($cacheIP, $cacheTime) = explode(':', $contents);
					$this->_debug($cacheIP.'/'.$cacheTime);
					$initial = false;
					$log_error .= sprintf(gettext("Cached IP: %s"), $cacheIP);
				} else {
					$cacheIP = '0.0.0.0';
					@file_put_contents($this->_cacheFile, "0.0.0.0:{$currentTime}");
					$cacheTime = $currentTime;
					$initial = true;
					$log_error .= gettext("No Cached IP found.");
				}
			}
			if ($this->_dnsVerboseLog) {
				log_error($log_error);
			}

			// Convert seconds = days * hr/day * min/hr * sec/min
			$maxCacheAgeSecs = $this->_dnsMaxCacheAgeDays * 24 * 60 * 60;

			$needs_updating = FALSE;
			/* lets determine if the item needs updating */
			if ($cacheIP != $wan_ip) {
				$needs_updating = true;
				$update_reason = gettext("Dynamic Dns: cacheIP != wan_ip. Updating.") . " ";
				$update_reason .= sprintf(gettext('Cached IP: %1$s WAN IP: %2$s'), $cacheIP, $wan_ip) . " ";
			}
			if (($currentTime - $cacheTime) > $maxCacheAgeSecs) {
				$needs_updating = true;
				$this->_forceUpdateNeeded = true;
				$update_reason = sprintf(gettext("Dynamic Dns: More than %s days. Updating."), $this->_dnsMaxCacheAgeDays);
				$update_reason .= " {$currentTime} - {$cacheTime} > {$maxCacheAgeSecs} ";
			}
			if ($initial == true) {
				$needs_updating = true;
				$update_reason .= gettext("Initial update.");
			}

			/*   finally if we need updating then store the
			 *   new cache value and return true
			 */
			if ($needs_updating == true) {
				if ($this->_dnsVerboseLog) {
					log_error("DynDns ({$this->_FQDN}): {$update_reason}");
				}
				return true;
			}

			return false;
		}

		/*
		 * Private Function (added 16 July 05) [beta]
		 *   - Writes debug information to a file.
		 *   - This function is only called when a unknown response
		 *   - status is returned from a DynDNS service provider.
		 */
		function _debug($data) {
			global $g;

			if (!$g['debug']) {
				return;
			}
			$string = date('m-d-y h:i:s').' - ('.$this->_debugID.') - ['.$this->_dnsService.'] - '.$data."\n";
			$file = fopen($this->_debugFile, 'a');
			fwrite($file, $string);
			fclose($file);
		}
		function _checkIP() {
			global $debug;

			if ($debug) {
				log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): _checkIP() starting.'), $this->_dnsService, $this->_FQDN));
			}

			if ($this->_useIPv6 == true) {
				$ip_address = get_interface_ipv6($this->_if);
				if (!is_ipaddrv6($ip_address)) {
					return 0;
				}
			} else {
				$ip_address = get_interface_ip($this->_if);
				if (!is_ipaddr($ip_address)) {
					return 0;
				}
			}
			if ($this->_useIPv6 == false && is_private_ip($ip_address)) {
				$hosttocheck = "checkip.dyndns.org";
				$try = 0;
				while ($try < 3) {
					$checkip = gethostbyname($hosttocheck);
					if (is_ipaddr($checkip)) {
						break;
					}
					$try++;
				}
				if ($try >= 3) {
					log_error(sprintf(gettext('Dynamic DNS %1$s debug information (%2$s): Could not resolve %3$s to IP using interface IP %4$s.'), $this->_dnsService, $this->_FQDN, $hosttocheck, $ip_address));
					return 0;
				}
				$ip_ch = curl_init("http://{$checkip}");
				curl_setopt($ip_ch, CURLOPT_RETURNTRANSFER, 1);
				curl_setopt($ip_ch, CURLOPT_SSL_VERIFYPEER, FALSE);
				curl_setopt($ip_ch, CURLOPT_INTERFACE, 'host!' . $ip_address);
				curl_setopt($ip_ch, CURLOPT_CONNECTTIMEOUT, '30');
				curl_setopt($ip_ch, CURLOPT_TIMEOUT, 120);
				if ($this->_useIPv6 == false) {
					curl_setopt($ip_ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
				}
				$ip_result_page = curl_exec($ip_ch);
				curl_close($ip_ch);
				$ip_result_decoded = urldecode($ip_result_page);
				preg_match('/Current IP Address: (.*)<\/body>/', $ip_result_decoded, $matches);
				$ip_address = trim($matches[1]);
				if (is_ipaddr($ip_address)) {
					if ($this->_dnsVerboseLog) {
						log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): %3$s extracted from %4$s'), $this->_dnsService, $this->_FQDN, $ip_address, $hosttocheck));
					}
				} else {
					log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): IP address could not be extracted from %3$s'), $this->_dnsService, $this->_FQDN, $hosttocheck));
					return 0;
				}
			} else {
				if ($this->_dnsVerboseLog) {
					log_error(sprintf(gettext('Dynamic DNS %1$s (%2$s): %3$s extracted from local system.'), $this->_dnsService, $this->_FQDN, $ip_address));
				}
			}
			$this->_dnsIP = $ip_address;

			return $ip_address;
		}

	}

?>