305 lines
9.0 KiB
PHP
305 lines
9.0 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Zend Framework
|
|
*
|
|
* LICENSE
|
|
*
|
|
* This source file is subject to the new BSD license that is bundled
|
|
* with this package in the file LICENSE.txt.
|
|
* It is also available through the world-wide-web at this URL:
|
|
* http://framework.zend.com/license/new-bsd
|
|
* If you did not receive a copy of the license and are unable to
|
|
* obtain it through the world-wide-web, please send an email
|
|
* to license@zend.com so we can send you a copy immediately.
|
|
*
|
|
* @category Zend
|
|
* @package Zend_TimeSync
|
|
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
|
|
* @version $Id: TimeSync.php 15577 2009-05-14 12:43:34Z matthew $
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
|
*/
|
|
|
|
/**
|
|
* Zend_Date
|
|
*/
|
|
require_once 'Zend/Date.php';
|
|
|
|
/**
|
|
* @category Zend
|
|
* @package Zend_TimeSync
|
|
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
|
*/
|
|
class Zend_TimeSync implements IteratorAggregate
|
|
{
|
|
/**
|
|
* Set the default timeserver protocol to "Ntp". This will be called
|
|
* when no protocol is specified
|
|
*/
|
|
const DEFAULT_PROTOCOL = 'Ntp';
|
|
|
|
/**
|
|
* Contains array of timeserver objects
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $_timeservers = array();
|
|
|
|
/**
|
|
* Holds a reference to the timeserver that is currently being used
|
|
*
|
|
* @var object
|
|
*/
|
|
protected $_current;
|
|
|
|
/**
|
|
* Allowed timeserver schemes
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $_allowedSchemes = array(
|
|
'Ntp',
|
|
'Sntp'
|
|
);
|
|
|
|
/**
|
|
* Configuration array, set using the constructor or using
|
|
* ::setOptions() or ::setOption()
|
|
*
|
|
* @var array
|
|
*/
|
|
public static $options = array(
|
|
'timeout' => 1
|
|
);
|
|
|
|
/**
|
|
* Zend_TimeSync constructor
|
|
*
|
|
* @param string|array $target - OPTIONAL single timeserver, or an array of timeservers.
|
|
* @param string $alias - OPTIONAL an alias for this timeserver
|
|
* @return object
|
|
*/
|
|
public function __construct($target = null, $alias = null)
|
|
{
|
|
if ($target !== null) {
|
|
$this->addServer($target, $alias);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* getIterator() - return an iteratable object for use in foreach and the like,
|
|
* this completes the IteratorAggregate interface
|
|
*
|
|
* @return ArrayObject
|
|
*/
|
|
public function getIterator()
|
|
{
|
|
return new ArrayObject($this->_timeservers);
|
|
}
|
|
|
|
/**
|
|
* Add a timeserver or multiple timeservers
|
|
*
|
|
* Server should be a single string representation of a timeserver,
|
|
* or a structured array listing multiple timeservers.
|
|
*
|
|
* If you provide an array of timeservers in the $target variable,
|
|
* $alias will be ignored. you can enter these as the array key
|
|
* in the provided array, which should be structured as follows:
|
|
*
|
|
* <code>
|
|
* $example = array(
|
|
* 'server_a' => 'ntp://127.0.0.1',
|
|
* 'server_b' => 'ntp://127.0.0.1:123',
|
|
* 'server_c' => 'ntp://[2000:364:234::2.5]',
|
|
* 'server_d' => 'ntp://[2000:364:234::2.5]:123'
|
|
* );
|
|
* </code>
|
|
*
|
|
* If no port number has been suplied, the default matching port
|
|
* number will be used.
|
|
*
|
|
* Supported protocols are:
|
|
* - ntp
|
|
* - sntp
|
|
*
|
|
* @param string|array $target - Single timeserver, or an array of timeservers.
|
|
* @param string $alias - OPTIONAL an alias for this timeserver
|
|
* @throws Zend_TimeSync_Exception
|
|
*/
|
|
public function addServer($target, $alias = null)
|
|
{
|
|
if (is_array($target)) {
|
|
foreach ($target as $key => $server) {
|
|
$this->_addServer($server, $key);
|
|
}
|
|
} else {
|
|
$this->_addServer($target, $alias);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the value for the given options
|
|
*
|
|
* This will replace any currently defined options.
|
|
*
|
|
* @param array $options - An array of options to be set
|
|
*/
|
|
public static function setOptions(array $options)
|
|
{
|
|
foreach ($options as $key => $value) {
|
|
Zend_TimeSync::$options[$key] = $value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Marks a nameserver as current
|
|
*
|
|
* @param string|integer $alias - The alias from the timeserver to set as current
|
|
* @throws Zend_TimeSync_Exception
|
|
*/
|
|
public function setServer($alias)
|
|
{
|
|
if (isset($this->_timeservers[$alias]) === true) {
|
|
$this->_current = $this->_timeservers[$alias];
|
|
} else {
|
|
require_once 'Zend/TimeSync/Exception.php';
|
|
throw new Zend_TimeSync_Exception("'$alias' does not point to valid timeserver");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the value to the option
|
|
*
|
|
* @param string $key - The option's identifier
|
|
* @return mixed
|
|
* @throws Zend_TimeSync_Exception
|
|
*/
|
|
public static function getOptions($key = null)
|
|
{
|
|
if ($key == null) {
|
|
return Zend_TimeSync::$options;
|
|
}
|
|
|
|
if (isset(Zend_TimeSync::$options[$key]) === true) {
|
|
return Zend_TimeSync::$options[$key];
|
|
} else {
|
|
require_once 'Zend/TimeSync/Exception.php';
|
|
throw new Zend_TimeSync_Exception("'$key' does not point to valid option");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return a specified timeserver by alias
|
|
* If no alias is given it will return the current timeserver
|
|
*
|
|
* @param string|integer $alias - The alias from the timeserver to return
|
|
* @return object
|
|
* @throws Zend_TimeSync_Exception
|
|
*/
|
|
public function getServer($alias = null)
|
|
{
|
|
if ($alias === null) {
|
|
if (isset($this->_current) && $this->_current !== false) {
|
|
return $this->_current;
|
|
} else {
|
|
require_once 'Zend/TimeSync/Exception.php';
|
|
throw new Zend_TimeSync_Exception('there is no timeserver set');
|
|
}
|
|
}
|
|
if (isset($this->_timeservers[$alias]) === true) {
|
|
return $this->_timeservers[$alias];
|
|
} else {
|
|
require_once 'Zend/TimeSync/Exception.php';
|
|
throw new Zend_TimeSync_Exception("'$alias' does not point to valid timeserver");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns information sent/returned from the current timeserver
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getInfo()
|
|
{
|
|
return $this->getServer()->getInfo();
|
|
}
|
|
|
|
/**
|
|
* Query the timeserver list using the fallback mechanism
|
|
*
|
|
* If there are multiple servers listed, this method will act as a
|
|
* facade and will try to return the date from the first server that
|
|
* returns a valid result.
|
|
*
|
|
* @param $locale - OPTIONAL locale
|
|
* @return object
|
|
* @throws Zend_TimeSync_Exception
|
|
*/
|
|
public function getDate($locale = null)
|
|
{
|
|
require_once 'Zend/TimeSync/Exception.php';
|
|
foreach ($this->_timeservers as $alias => $server) {
|
|
$this->_current = $server;
|
|
try {
|
|
return $server->getDate($locale);
|
|
} catch (Zend_TimeSync_Exception $e) {
|
|
if (!isset($masterException)) {
|
|
$masterException = new Zend_TimeSync_Exception('all timeservers are bogus');
|
|
}
|
|
$masterException->addException($e);
|
|
}
|
|
}
|
|
|
|
throw $masterException;
|
|
}
|
|
|
|
/**
|
|
* Adds a timeserver object to the timeserver list
|
|
*
|
|
* @param string|array $target - Single timeserver, or an array of timeservers.
|
|
* @param string $alias - An alias for this timeserver
|
|
*/
|
|
protected function _addServer($target, $alias)
|
|
{
|
|
if ($pos = strpos($target, '://')) {
|
|
$protocol = substr($target, 0, $pos);
|
|
$adress = substr($target, $pos + 3);
|
|
} else {
|
|
$adress = $target;
|
|
$protocol = self::DEFAULT_PROTOCOL;
|
|
}
|
|
|
|
if ($pos = strrpos($adress, ':')) {
|
|
$posbr = strpos($adress, ']');
|
|
if ($posbr and ($pos > $posbr)) {
|
|
$port = substr($adress, $pos + 1);
|
|
$adress = substr($adress, 0, $pos);
|
|
} else if (!$posbr and $pos) {
|
|
$port = substr($adress, $pos + 1);
|
|
$adress = substr($adress, 0, $pos);
|
|
} else {
|
|
$port = null;
|
|
}
|
|
} else {
|
|
$port = null;
|
|
}
|
|
|
|
$protocol = ucfirst(strtolower($protocol));
|
|
if (!in_array($protocol, $this->_allowedSchemes)) {
|
|
require_once 'Zend/TimeSync/Exception.php';
|
|
throw new Zend_TimeSync_Exception("'$protocol' is not a supported protocol");
|
|
}
|
|
|
|
$className = 'Zend_TimeSync_' . $protocol;
|
|
if (!class_exists($className)) {
|
|
require_once 'Zend/Loader.php';
|
|
Zend_Loader::loadClass($className);
|
|
}
|
|
$timeServerObj = new $className($adress, $port);
|
|
|
|
$this->_timeservers[$alias] = $timeServerObj;
|
|
}
|
|
}
|