/demo/scalr_newui/app/src/LibWebta/library/NET/DNS/class.AbstractDNSZone.php

<?

    /**

     * This file is a part of LibWebta, PHP class library.

     *

     * LICENSE

     *

	 * This source file is subject to version 2 of the GPL license,

	 * that is bundled with this package in the file license.txt and is

	 * available through the world-wide-web at the following url:

	 * http://www.gnu.org/copyleft/gpl.html

     *

     * @category   LibWebta

     * @package    NET

     * @subpackage DNS

     * @copyright  Copyright (c) 2003-2007 Webta Inc, http://www.gnu.org/licenses/gpl.html

     * @license    http://www.gnu.org/licenses/gpl.html

     */

    

    /**

     * @name       AbstractDNSZone

     * @abstract 

     * @category   LibWebta

     * @package    NET

     * @subpackage DNS

     * @version 1.0

     * @author Igor Savchenko <http://webta.net/company.html>

     * @author Alex Kovalyov <http://webta.net/company.html>

     */

	abstract class AbstractDNSZone extends Core

	{

		

		

		/**

		* Generate a new serial based on given one.

		*

		* This generates a new serial, based on the often used format

		* YYYYMMDDXX where XX is an ascending serial,

		* allowing up to 100 edits per day. After that the serial wraps

		* into the next day and it still works.

		*

		* @param int  $serial Current serial

		* @return int New serial

		*/

		static public function RaiseSerial($serial = 0)

		{

			$serial = (int)$serial;

			

		    if (substr($serial, 0, 8) == date('Ymd')) 

			{

				//Serial's today. Simply raise it.

				$serial = (int)$serial + 1;

			} 

			elseif ($serial > date('Ymd00')) 

			{

				//Serial's after today.

				$serial = (int)$serial + 1;

			} 

			else 

			{

				//Older serial. Generate new one.

				$serial = date('YmdH');

			}

			

			return intval($serial);

		}

		

		

		

		/**

		* Checks if a value is an IP address or not.

		*

		* @param string    Value to check.

		* @return bool     true or false.

		* @access public

		*/

		function IsIP($ip)

		{

			return (bool) preg_match('/^([0-9]{1,3}\.){4}$/', $ip . '.');

		}

		

		

		function IsDomain($domain)

		{

			if ($domain == "*")

				return true;

				

			return (bool) preg_match('/^[^\.]([a-zA-Z0-9\-]{0,}\.)+$/', $domain . ".");

		}

		

		

		

		/**

		* Checks if a value is a local network IP address or not.

		*

		* @param string    Value to check.

		* @return bool     true or false.

		* @access public

		*/

		function IsValidIP($ip)

		{

			$internal =  (bool) preg_match('/^192|10(\.[0-9]{1,3}){3}$/', $ip);

			$bcast =  (bool) preg_match('/^([0-9]{1,3}\.){3}255|0$/', $ip);

			

			return !($internal || $bcast);

		}

		

		

		

		/**

		* Reverses IP address string for PTR needs

		*

		* @param string $ip Ip address string

		* @return string Reversed IP

		* @access public

		*/

		public function ReverseIP($ip)

		{

			$chunks = explode(".", $ip);

			$chunksr = array_reverse($chunks);

			$retval = implode(".", $chunksr);

			

			return ($retval);

		}

		

		

		

		/**

		* Converts a BIND-style timeout(1D, 2H, 15M) to seconds.

		*

		* @param string  $time Time to convert.

		* @return int    time in seconds on success, PEAR error on failure.

		*/

		function ParseTimeToSeconds($time)

		{

			if (is_numeric($time)) 

			{

				//Already a number. Return.

				return $time;

			} 

			else 

			{

				$pattern = '/([0-9]+)([a-zA-Z]+)/';

				$split = preg_split($pattern, $time, -1,

									PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);

				if (count($split) != 2) {

					Core::RaiseWarning(sprintf(_("Unable to parse time. %d"), $time));

				}

				

				list($num, $what) = $split;

				

				switch (strtoupper($what))

				{

					case 'S':

						$times = 1; //Seconds

						break;

					case 'M':

						$times = 1 * 60; //Minute

						break;

					case 'H':

						$times = 1 * 60 * 60; //Hour

						break;

					case 'D':

						$times = 1 * 60 * 60 * 24; //Day

						break;

					case 'W':

						$times = 1 * 60 * 60 * 24 * 7; //Week

						break;

					default:

						Core::RaiseWarning(sprintf(_("Unable to parse time. %d"), $time));

						break;

				}

				$time = $num * $times;

				return $time;

			}

		}

	    

		

		/**

		* Append dot to the end of FQDN

		* @access public

		* @param string $domain Domain name

		* @return void

		*/ 

		public function Dottify($value)

		{

			$retval = $this->UnDottify($value);

			$retval .= ".";

			return $retval;

		}

		

		

		/**

		* Remove leading dot

		* @access public

		* @param string $domain Domain name

		* @return void

		*/ 

		public function UnDottify($domain)

		{

			$retval = rtrim($domain, ".");

			return $retval;

		}

		

		/**

		* Set current template

		* @access public

		* @param string $template DNS Zone template

		* @return void

		*/ 

		public function SetTemplate($template)

		{

			$this->Template = $template;

		}

		

		/**

		* Raise MX pref on 10

		*

		* @param string $pref Preferences

		* @return string Reversed IP

		* @access protected

		*/

		protected function RaiseMXPref($pref)

		{

			// Increase forcefully in case if this pref already assigned

			// to another MX record or pref is not set (default)

			if (count($this->MXPrefs))

			{

				if (in_array($pref, $this->MXPrefs) || !$pref)

					$retval = max($this->MXPrefs) + 10;

				else

					$retval = $pref;

			}

			else

				$retval = $pref;

				

			// Add this new pref to stack

			$this->MXPrefs[] = $retval;

			return($retval);

		}

	}

?>