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<?php

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/**
* Services_BrowserMob
*
* Copyright (c) 2010-2011, Sebastian Nohn <sebastian@nohn.net>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Sebastian Nohn nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* This class acts as interface to the BrowserMob API
*
* @category Services
* @package Services_BrowserMob
* @author Sebastian Nohn <sebastian@nohn.net>
* @copyright 2011 Sebastian Nohn <sebastian@nohn.net>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version $Id$
* @link https://github.com/nohn/Services_BrowserMob
* @see Services_BrowserMob
* @since File available since Release 1.0.0
*/

/**
* Services_BrowserMob
*
* Services_BrowserMob
*
* @category Services
* @package Services_BrowserMob
* @author Sebastian Nohn <sebastian@nohn.net>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version $Id$
* @link https://github.com/nohn/Services_BrowserMob
*/

class Services_BrowserMob
{
    private $_key;
    private $_secret;

    /**
* Set BrowserMob Key
*
* @param string $key BrowserMob Key
*
* @return void
*/
    public function setKey($key)
    {
        $this->_key = $key;
    }

    /**
* Get BrowserMob Key
*
* @return string BrowserMob Key
*/
    public function getKey()
    {
        return $this->_key;
    }

    /**
* Set BrowserMob Secret
*
* @param string $secret BrowserMob Secret
*
* @return void
*/
    public function setSecret($secret)
    {
        $this->_secret = $secret;
    }

    /**
* Get BrowserMob Secret
*
* @return string BrowserMob Secret
*/
    public function getSecret()
    {
        return $this->_secret;
    }

    /**
* Sign a BrowserMob Request
*
* @param string $url BrowserMob URL
* @param string $params BrowserMob Parameters
*
* @return BrowserMob Signature
**/
    public function sign($url, $params)
    {
        ksort($params);
        $urlencoded_params = array();
        foreach ($params as $key => $value) {
            $urlencoded_params[urlencode($key)] = urlencode(utf8_encode($value));
        }
        $parsed_url = parse_url($url);
        $data = "GET\n";
        $data .= $parsed_url['host']."\n";
        $data .= $parsed_url['path']."\n";
        $data .= http_build_query($urlencoded_params);
        
        $digest = hash_hmac('sha1', $data, $this->getSecret(), true);
        return base64_encode($digest);
    }
    
    /**
* Call BrowserMob API
*
* @param string $url BrowserMob URL
* @param string $params BrowserMob Parameters
*
* @return BrowserMob API Response Object
**/
    public function call($url, $params)
    {
        $params['key'] = $this->getKey();
        $params['timestamp'] = time().'000';
        $params['nonce'] = uniqid();
        $params['signature'] = $this->sign($url, $params);
        $request_url = $url.'?'.http_build_query($params);
        return json_decode(file_get_contents($request_url));
    }

} // class
?>
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