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-rw-r--r--library/vendor/Zend/TimeSync.php296
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+<?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @version $Id$
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+/**
+ * Zend_Date
+ */
+
+/**
+ * @category Zend
+ * @package Zend_TimeSync
+ * @copyright Copyright (c) 2005-2015 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 {
+ 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 {
+ 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 $this->_current;
+ } else {
+ throw new Zend_TimeSync_Exception('there is no timeserver set');
+ }
+ }
+ if (isset($this->_timeservers[$alias]) === true) {
+ return $this->_timeservers[$alias];
+ } else {
+ 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 Zend_Locale $locale - OPTIONAL locale
+ * @return object
+ * @throws Zend_TimeSync_Exception
+ */
+ public function getDate($locale = null)
+ {
+ 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, $this->_allowedSchemes)) {
+ throw new Zend_TimeSync_Exception("'$protocol' is not a supported protocol");
+ }
+
+ $className = 'Zend_TimeSync_' . $protocol;
+ if (!class_exists($className)) {
+ Zend_Loader::loadClass($className);
+ }
+ $timeServerObj = new $className($adress, $port);
+
+ $this->_timeservers[$alias] = $timeServerObj;
+ }
+}
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