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   1  <?php
   2  /**
   3   * Zend Framework
   4   *
   5   * LICENSE
   6   *
   7   * This source file is subject to the new BSD license that is bundled
   8   * with this package in the file LICENSE.txt.
   9   * It is also available through the world-wide-web at this URL:
  10   * http://framework.zend.com/license/new-bsd
  11   * If you did not receive a copy of the license and are unable to
  12   * obtain it through the world-wide-web, please send an email
  13   * to [email protected] so we can send you a copy immediately.
  14   *
  15   * @category   Zend
  16   * @package    Zend_Oauth
  17   * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  18   * @license    http://framework.zend.com/license/new-bsd     New BSD License
  19   * @version    $Id: Oauth.php 24593 2012-01-05 20:35:02Z matthew $
  20   */
  21  
  22  /** Zend_Http_Client */
  23  require_once  'Zend/Http/Client.php';
  24  
  25  /**
  26   * @category   Zend
  27   * @package    Zend_Oauth
  28   * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  29   * @license    http://framework.zend.com/license/new-bsd     New BSD License
  30   */
  31  class Zend_Oauth
  32  {
  33      const REQUEST_SCHEME_HEADER      = 'header';
  34      const REQUEST_SCHEME_POSTBODY    = 'postbody';
  35      const REQUEST_SCHEME_QUERYSTRING = 'querystring';
  36      const GET                        = 'GET';
  37      const POST                       = 'POST';
  38      const PUT                        = 'PUT';
  39      const DELETE                     = 'DELETE';
  40      const HEAD                       = 'HEAD';
  41  
  42      /**
  43       * Singleton instance if required of the HTTP client
  44       *
  45       * @var Zend_Http_Client
  46       */
  47      protected static $httpClient = null;
  48  
  49      /**
  50       * Allows the external environment to make Zend_Oauth use a specific
  51       * Client instance.
  52       *
  53       * @param Zend_Http_Client $httpClient
  54       * @return void
  55       */
  56      public static function setHttpClient(Zend_Http_Client $httpClient)
  57      {
  58          self::$httpClient = $httpClient;
  59      }
  60  
  61      /**
  62       * Return the singleton instance of the HTTP Client. Note that
  63       * the instance is reset and cleared of previous parameters and
  64       * Authorization header values.
  65       *
  66       * @return Zend_Http_Client
  67       */
  68      public static function getHttpClient()
  69      {
  70          if (!isset(self::$httpClient)) {
  71              self::$httpClient = new Zend_Http_Client;
  72          } else {
  73              self::$httpClient->setHeaders('Authorization', null);
  74              self::$httpClient->resetParameters();
  75          }
  76          return self::$httpClient;
  77      }
  78  
  79      /**
  80       * Simple mechanism to delete the entire singleton HTTP Client instance
  81       * which forces an new instantiation for subsequent requests.
  82       *
  83       * @return void
  84       */
  85      public static function clearHttpClient()
  86      {
  87          self::$httpClient = null;
  88      }
  89  }