<?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_Oauth

 * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Oauth.php 25167 2012-12-19 16:28:01Z matthew $

 */

/** Zend_Http_Client */

require_once 'Zend/Http/Client.php';

/**

 * @category   Zend

 * @package    Zend_Oauth

 * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Oauth

{

    const REQUEST_SCHEME_HEADER      = 'header';

    const REQUEST_SCHEME_POSTBODY    = 'postbody';

    const REQUEST_SCHEME_QUERYSTRING = 'querystring';

    const GET                        = 'GET';

    const POST                       = 'POST';

    const PUT                        = 'PUT';

    const DELETE                     = 'DELETE';

    const HEAD                       = 'HEAD';

    const OPTIONS                    = 'OPTIONS';

    /**

     * Singleton instance if required of the HTTP client

     *

     * @var Zend_Http_Client

     */

    protected static $httpClient = null;

    /**

     * Allows the external environment to make Zend_Oauth use a specific

     * Client instance.

     *

     * @param Zend_Http_Client $httpClient

     * @return void

     */

    public static function setHttpClient(Zend_Http_Client $httpClient)

    {

        self::$httpClient = $httpClient;

    }

    /**

     * Return the singleton instance of the HTTP Client. Note that

     * the instance is reset and cleared of previous parameters and

     * Authorization header values.

     *

     * @return Zend_Http_Client

     */

    public static function getHttpClient()

    {

        if (!isset(self::$httpClient)) {

            self::$httpClient = new Zend_Http_Client;

        } else {

            self::$httpClient->setHeaders('Authorization', null);

            self::$httpClient->resetParameters();

        }

        return self::$httpClient;

    }

    /**

     * Simple mechanism to delete the entire singleton HTTP Client instance

     * which forces an new instantiation for subsequent requests.

     *

     * @return void

     */

    public static function clearHttpClient()

    {

        self::$httpClient = null;

    }

}