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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_Amf
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /** @see Zend_Amf_Parse_InputStream */
 // require_once 'Zend/Amf/Parse/InputStream.php';
 
 /** @see Zend_Amf_Parse_Amf0_Deserializer */
 // require_once 'Zend/Amf/Parse/Amf0/Deserializer.php';
 
 /** @see Zend_Amf_Constants */
 // require_once 'Zend/Amf/Constants.php';
 
 /** @see Zend_Amf_Value_MessageHeader */
 // require_once 'Zend/Amf/Value/MessageHeader.php';
 
 /** @see Zend_Amf_Value_MessageBody */
 // require_once 'Zend/Amf/Value/MessageBody.php';
 
 /**
  * Handle the incoming AMF request by deserializing the data to php object
  * types and storing the data for Zend_Amf_Server to handle for processing.
  *
  * @todo       Currently not checking if the object needs to be Type Mapped to a server object.
  * @package    Zend_Amf
  * @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_Amf_Request
 {
     /**
      * @var int AMF client type (AMF0, AMF3)
      */
     protected $_clientType = 0; // default AMF0
 
     /**
      * @var array Message bodies
      */
     protected $_bodies = array();
 
     /**
      * @var array Message headers
      */
     protected $_headers = array();
 
     /**
      * @var int Message encoding to use for objects in response
      */
     protected $_objectEncoding = 0;
 
     /**
      * @var Zend_Amf_Parse_InputStream
      */
     protected $_inputStream;
 
     /**
      * @var Zend_Amf_Parse_AMF0_Deserializer
      */
     protected $_deserializer;
 
     /**
      * Time of the request
      * @var  mixed
      */
     protected $_time;
 
     /**
      * Prepare the AMF InputStream for parsing.
      *
      * @param  string $request
      * @return Zend_Amf_Request
      */
     public function initialize($request)
     {
         $this->_inputStream  = new Zend_Amf_Parse_InputStream($request);
         $this->_deserializer = new Zend_Amf_Parse_Amf0_Deserializer($this->_inputStream);
         $this->readMessage($this->_inputStream);
         return $this;
     }
 
     /**
      * Takes the raw AMF input stream and converts it into valid PHP objects
      *
      * @param  Zend_Amf_Parse_InputStream
      * @return Zend_Amf_Request
      */
     public function readMessage(Zend_Amf_Parse_InputStream $stream)
     {
         $clientVersion = $stream->readUnsignedShort();
         if (($clientVersion != Zend_Amf_Constants::AMF0_OBJECT_ENCODING)
             && ($clientVersion != Zend_Amf_Constants::AMF3_OBJECT_ENCODING)
             && ($clientVersion != Zend_Amf_Constants::FMS_OBJECT_ENCODING)
         ) {
             // require_once 'Zend/Amf/Exception.php';
             throw new Zend_Amf_Exception('Unknown Player Version ' . $clientVersion);
         }
 
         $this->_bodies  = array();
         $this->_headers = array();
         $headerCount    = $stream->readInt();
 
         // Iterate through the AMF envelope header
         while ($headerCount--) {
             $this->_headers[] = $this->readHeader();
         }
 
         // Iterate through the AMF envelope body
         $bodyCount = $stream->readInt();
         while ($bodyCount--) {
             $this->_bodies[] = $this->readBody();
         }
 
         return $this;
     }
 
     /**
      * Deserialize a message header from the input stream.
      *
      * A message header is structured as:
      * - NAME String
      * - MUST UNDERSTAND Boolean
      * - LENGTH Int
      * - DATA Object
      *
      * @return Zend_Amf_Value_MessageHeader
      */
     public function readHeader()
     {
         $name     = $this->_inputStream->readUTF();
         $mustRead = (bool)$this->_inputStream->readByte();
         $length   = $this->_inputStream->readLong();
 
         try {
             $data = $this->_deserializer->readTypeMarker();
         } catch (Exception $e) {
             // require_once 'Zend/Amf/Exception.php';
             throw new Zend_Amf_Exception('Unable to parse ' . $name . ' header data: ' . $e->getMessage() . ' '. $e->getLine(), 0, $e);
         }
 
         $header = new Zend_Amf_Value_MessageHeader($name, $mustRead, $data, $length);
         return $header;
     }
 
     /**
      * Deserialize a message body from the input stream
      *
      * @return Zend_Amf_Value_MessageBody
      */
     public function readBody()
     {
         $targetURI   = $this->_inputStream->readUTF();
         $responseURI = $this->_inputStream->readUTF();
         $length      = $this->_inputStream->readLong();
 
         try {
             $data = $this->_deserializer->readTypeMarker();
         } catch (Exception $e) {
             // require_once 'Zend/Amf/Exception.php';
             throw new Zend_Amf_Exception('Unable to parse ' . $targetURI . ' body data ' . $e->getMessage(), 0, $e);
         }
 
         // Check for AMF3 objectEncoding
         if ($this->_deserializer->getObjectEncoding() == Zend_Amf_Constants::AMF3_OBJECT_ENCODING) {
             /*
              * When and AMF3 message is sent to the server it is nested inside
              * an AMF0 array called Content. The following code gets the object
              * out of the content array and sets it as the message data.
              */
             if(is_array($data) && $data[0] instanceof Zend_Amf_Value_Messaging_AbstractMessage){
                 $data = $data[0];
             }
 
             // set the encoding so we return our message in AMF3
             $this->_objectEncoding = Zend_Amf_Constants::AMF3_OBJECT_ENCODING;
         }
 
         $body = new Zend_Amf_Value_MessageBody($targetURI, $responseURI, $data);
         return $body;
     }
 
     /**
      * Return an array of the body objects that were found in the amf request.
      *
      * @return array {target, response, length, content}
      */
     public function getAmfBodies()
     {
         return $this->_bodies;
     }
 
     /**
      * Accessor to private array of message bodies.
      *
      * @param  Zend_Amf_Value_MessageBody $message
      * @return Zend_Amf_Request
      */
     public function addAmfBody(Zend_Amf_Value_MessageBody $message)
     {
         $this->_bodies[] = $message;
         return $this;
     }
 
     /**
      * Return an array of headers that were found in the amf request.
      *
      * @return array {operation, mustUnderstand, length, param}
      */
     public function getAmfHeaders()
     {
         return $this->_headers;
     }
 
     /**
      * Return the either 0 or 3 for respect AMF version
      *
      * @return int
      */
     public function getObjectEncoding()
     {
         return $this->_objectEncoding;
     }
 
     /**
      * Set the object response encoding
      *
      * @param  mixed $int
      * @return Zend_Amf_Request
      */
     public function setObjectEncoding($int)
     {
         $this->_objectEncoding = $int;
         return $this;
     }
 }