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<?php
/*********************************************************************************
* SugarCRM Community Edition is a customer relationship management program developed by
* SugarCRM, Inc. Copyright (C) 2004-2011 SugarCRM Inc.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License version 3 as published by the
* Free Software Foundation with the addition of the following permission added
* to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
* IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
* OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License along with
* this program; if not, see http://www.gnu.org/licenses or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*
* You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
* SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License version 3.
*
* In accordance with Section 7(b) of the GNU Affero General Public License version 3,
* these Appropriate Legal Notices must retain the display of the "Powered by
* SugarCRM" logo. If the display of the logo is not reasonably feasible for
* technical reasons, the Appropriate Legal Notices must display the words
* "Powered by SugarCRM".
********************************************************************************/


    require_once 'Zend/Oauth/Consumer.php';
    // use ZF oauth
    /**
* Sugar Oauth consumer
* @api
*/
    class SugarOAuth extends Zend_Oauth_Consumer
    {
        protected $_last = '';
        protected $_oauth_config = array();

        /**
* Create OAuth client
* @param string $consumer_key
* @param string $consumer_secret
* @param array $params OAuth options
*/
        public function __construct($consumer_key , $consumer_secret, $params = null)
        {
            $this->_oauth_config = array(
                'consumerKey' => $consumer_key,
                'consumerSecret' => $consumer_secret,
            );
            if(!empty($params)) {
                $this->_oauth_config = array_merge($this->_oauth_config, $params);
            }
            parent::__construct($this->_oauth_config);
        }

        /**
* Enable debugging
* @return SugarOAuth
*/
        public function enableDebug()
        {
            return $this;
        }

        /**
* Set token
* @param string $token
* @param string $secret
*/
        public function setToken($token, $secret)
        {
            $this->token = array($token, $secret);
        }

        /**
* Create request token object for current token
* @return Zend_Oauth_Token_Request
*/
        public function makeRequestToken()
        {
            $token = new Zend_Oauth_Token_Request();
            $token->setToken($this->token[0]);
            $token->setTokenSecret($this->token[1]);
            return $token;
        }

        /**
* Create access token object for current token
* @return Zend_Oauth_Token_Access
*/
        public function makeAccessToken()
        {
            $token = new Zend_Oauth_Token_Access();
            $token->setToken($this->token[0]);
            $token->setTokenSecret($this->token[1]);
            return $token;
        }

        /**
* Retrieve request token from URL
* @param string $url
* @param string $callback Callback URL
* @param array $params Query params
* @return array
* @see Zend_Oauth_Consumer::getRequestToken()
*/
        public function getRequestToken($url, $callback = null, $params = array())
        {
            if(!empty($callback)) {
                $this->setCallbackUrl($callback);
            }
            list($clean_url, $query) = explode('?', $url);
            if($query) {
                $url = $clean_url;
                parse_str($query, $query_params);
                $params = array_merge($params, $query_params);
            }
            $this->setRequestTokenUrl($url);
            try{
                $this->_last = $token = parent::getRequestToken($params);
                return array('oauth_token' => $token->getToken(), 'oauth_token_secret' => $token->getTokenSecret());
            }catch(Zend_Oauth_Exception $e){
                return array('oauth_token' => '', 'oauth_token_secret' => '');
            }
        }

        /**
* Retrieve access token from url
* @param string $url
* @see Zend_Oauth_Consumer::getAccessToken()
* @return array
*/
        public function getAccessToken($url)
        {
            $this->setAccessTokenUrl($url);
            $this->_last = $token = parent::getAccessToken($_REQUEST, $this->makeRequestToken());
            return array('oauth_token' => $token->getToken(), 'oauth_token_secret' => $token->getTokenSecret());
        }

       /**
* Fetch URL with OAuth
* @param string $url
* @param string $params Query params
* @param string $method HTTP method
* @param array $headers HTTP headers
* @return string
*/
       public function fetch($url, $params = null, $method = 'GET', $headers = null)
       {
           $acc = $this->makeAccessToken();
           if ( strpos($url,'?') ) {
               list($clean_url, $query) = explode('?', $url);
               if($query) {
                   $url = $clean_url;
                   parse_str($query, $query_params);
                   $params = array_merge($params?$params:array(), $query_params);
               }
           }
            $client = $acc->getHttpClient($this->_oauth_config, $url);
            $client->setMethod($method);
            if(!empty($headers)) {
                $client->setHeaders($headers);
            }
            if(!empty($params)) {
                if($method == 'GET') {
                    $client->setParameterGet($params);
                } else {
                    $client->setParameterPost($params);
                }
            }
            $this->_last = $resp = $client->request();
            $this->_lastReq = $client->getLastRequest();
            return $resp->getBody();
       }

       /**
* Get HTTP client
* @return Zend_Oauth_Client
*/
       public function getClient()
       {
            $acc = $this->makeAccessToken();
            return $acc->getHttpClient($this->_oauth_config);
       }

       /**
* Get last response
* @return string
*/
       public function getLastResponse()
       {
            return $this->_last;
       }

       /**
* Get last request
* @return string
*/
       public function getLastRequest()
       {
            return $this->_lastReq;
       }
    }
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