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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_XmlRpc
  * @subpackage Server
  * @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    $Id$
  */
 
 /**
  * XML-RPC system.* methods
  *
  * @category   Zend
  * @package    Zend_XmlRpc
  * @subpackage Server
  * @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_XmlRpc_Server_System
 {
     /**
      * @var Zend_XmlRpc_Server
      */
     protected $_server;
 
     /**
      * Constructor
      *
      * @param  Zend_XmlRpc_Server $server
      * @return void
      */
     public function __construct(Zend_XmlRpc_Server $server)
     {
         $this->_server = $server;
     }
 
     /**
      * List all available XMLRPC methods
      *
      * Returns an array of methods.
      *
      * @return array
      */
     public function listMethods()
     {
         $table = $this->_server->getDispatchTable()->getMethods();
         return array_keys($table);
     }
 
     /**
      * Display help message for an XMLRPC method
      *
      * @param string $method
      * @return string
      */
     public function methodHelp($method)
     {
         $table = $this->_server->getDispatchTable();
         if (!$table->hasMethod($method)) {
             // require_once 'Zend/XmlRpc/Server/Exception.php';
             throw new Zend_XmlRpc_Server_Exception('Method "' . $method . '" does not exist', 640);
         }
 
         return $table->getMethod($method)->getMethodHelp();
     }
 
     /**
      * Return a method signature
      *
      * @param string $method
      * @return array
      */
     public function methodSignature($method)
     {
         $table = $this->_server->getDispatchTable();
         if (!$table->hasMethod($method)) {
             // require_once 'Zend/XmlRpc/Server/Exception.php';
             throw new Zend_XmlRpc_Server_Exception('Method "' . $method . '" does not exist', 640);
         }
         $method = $table->getMethod($method)->toArray();
         return $method['prototypes'];
     }
 
     /**
      * Multicall - boxcar feature of XML-RPC for calling multiple methods
      * in a single request.
      *
      * Expects a an array of structs representing method calls, each element
      * having the keys:
      * - methodName
      * - params
      *
      * Returns an array of responses, one for each method called, with the value
      * returned by the method. If an error occurs for a given method, returns a
      * struct with a fault response.
      *
      * @see http://www.xmlrpc.com/discuss/msgReader$1208
      * @param  array $methods
      * @return array
      */
     public function multicall($methods)
     {
         $responses = array();
         foreach ($methods as $method) {
             $fault = false;
             if (!is_array($method)) {
                 $fault = $this->_server->fault('system.multicall expects each method to be a struct', 601);
             } elseif (!isset($method['methodName'])) {
                 $fault = $this->_server->fault('Missing methodName: ' . var_export($methods, 1), 602);
             } elseif (!isset($method['params'])) {
                 $fault = $this->_server->fault('Missing params', 603);
             } elseif (!is_array($method['params'])) {
                 $fault = $this->_server->fault('Params must be an array', 604);
             } else {
                 if ('system.multicall' == $method['methodName']) {
                     // don't allow recursive calls to multicall
                     $fault = $this->_server->fault('Recursive system.multicall forbidden', 605);
                 }
             }
 
             if (!$fault) {
                 try {
                     $request = new Zend_XmlRpc_Request();
                     $request->setMethod($method['methodName']);
                     $request->setParams($method['params']);
                     $response = $this->_server->handle($request);
                     if ($response instanceof Zend_XmlRpc_Fault
                         || $response->isFault()
                     ) {
                         $fault = $response;
                     } else {
                         $responses[] = $response->getReturnValue();
                     }
                 } catch (Exception $e) {
                     $fault = $this->_server->fault($e);
                 }
             }
 
             if ($fault) {
                 $responses[] = array(
                     'faultCode'   => $fault->getCode(),
                     'faultString' => $fault->getMessage()
                 );
             }
         }
 
         return $responses;
     }
 }