<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP 5.1.6 or newer

 *

 * @package		CodeIgniter

 * @author		ExpressionEngine Dev Team

 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.

 * @license		http://codeigniter.com/user_guide/license.html

 * @link		http://codeigniter.com

 * @since		Version 1.0

 * @filesource

 */



if ( ! function_exists('xml_parser_create'))

{

	show_error('Your PHP installation does not support XML');

}



if ( ! class_exists('CI_Xmlrpc'))

{

	show_error('You must load the Xmlrpc class before loading the Xmlrpcs class in order to create a server.');

}



// ------------------------------------------------------------------------



/**

 * XML-RPC server class

 *

 * @package		CodeIgniter

 * @subpackage	Libraries

 * @category	XML-RPC

 * @author		ExpressionEngine Dev Team

 * @link		http://codeigniter.com/user_guide/libraries/xmlrpc.html

 */

class CI_Xmlrpcs extends CI_Xmlrpc

{

	var $methods		= array();	//array of methods mapped to function names and signatures

	var $debug_msg		= '';		// Debug Message

	var $system_methods = array();	// XML RPC Server methods

	var $controller_obj;



	var $object			= FALSE;



	/**

	 * Constructor

	 */

	public function __construct($config=array())

	{

		parent::__construct();

		$this->set_system_methods();



		if (isset($config['functions']) && is_array($config['functions']))

		{

			$this->methods = array_merge($this->methods, $config['functions']);

		}



		log_message('debug', "XML-RPC Server Class Initialized");

	}



	// --------------------------------------------------------------------



	/**

	 * Initialize Prefs and Serve

	 *

	 * @access	public

	 * @param	mixed

	 * @return	void

	 */

	function initialize($config=array())

	{

		if (isset($config['functions']) && is_array($config['functions']))

		{

			$this->methods = array_merge($this->methods, $config['functions']);

		}



		if (isset($config['debug']))

		{

			$this->debug = $config['debug'];

		}



		if (isset($config['object']) && is_object($config['object']))

		{

			$this->object = $config['object'];

		}



		if (isset($config['xss_clean']))

		{

			$this->xss_clean = $config['xss_clean'];

		}

	}



	// --------------------------------------------------------------------



	/**

	 * Setting of System Methods

	 *

	 * @access	public

	 * @return	void

	 */

	function set_system_methods()

	{

		$this->methods = array(

					'system.listMethods'	 => array(

													'function' => 'this.listMethods',

													'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString), array($this->xmlrpcArray)),

													'docstring' => 'Returns an array of available methods on this server'),

					'system.methodHelp'		 => array(

													'function' => 'this.methodHelp',

													'signature' => array(array($this->xmlrpcString, $this->xmlrpcString)),

													'docstring' => 'Returns a documentation string for the specified method'),

					'system.methodSignature' => array(

													'function' => 'this.methodSignature',

													'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString)),

													'docstring' => 'Returns an array describing the return type and required parameters of a method'),

					'system.multicall'		 => array(

												'function' => 'this.multicall',

												'signature' => array(array($this->xmlrpcArray, $this->xmlrpcArray)),

												'docstring' => 'Combine multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details')

					);

	}



	// --------------------------------------------------------------------



	/**

	 * Main Server Function

	 *

	 * @access	public

	 * @return	void

	 */

	function serve()

	{

		$r = $this->parseRequest();

		$payload  = '<?xml version="1.0" encoding="'.$this->xmlrpc_defencoding.'"?'.'>'."\n";

		$payload .= $this->debug_msg;

		$payload .= $r->prepare_response();



		header("Content-Type: text/xml");

		header("Content-Length: ".strlen($payload));

		exit($payload);

	}



	// --------------------------------------------------------------------



	/**

	 * Add Method to Class

	 *

	 * @access	public

	 * @param	string	method name

	 * @param	string	function

	 * @param	string	signature

	 * @param	string	docstring

	 * @return	void

	 */

	function add_to_map($methodname, $function, $sig, $doc)

	{

		$this->methods[$methodname] = array(

			'function'  => $function,

			'signature' => $sig,

			'docstring' => $doc

		);

	}



	// --------------------------------------------------------------------



	/**

	 * Parse Server Request

	 *

	 * @access	public

	 * @param	string	data

	 * @return	object	xmlrpc response

	 */

	function parseRequest($data='')

	{

		global $HTTP_RAW_POST_DATA;



		//-------------------------------------

		//  Get Data

		//-------------------------------------



		if ($data == '')

		{

			$data = $HTTP_RAW_POST_DATA;

		}



		//-------------------------------------

		//  Set up XML Parser

		//-------------------------------------



		$parser = xml_parser_create($this->xmlrpc_defencoding);

		$parser_object = new XML_RPC_Message("filler");



		$parser_object->xh[$parser]					= array();

		$parser_object->xh[$parser]['isf']			= 0;

		$parser_object->xh[$parser]['isf_reason']	= '';

		$parser_object->xh[$parser]['params']		= array();

		$parser_object->xh[$parser]['stack']		= array();

		$parser_object->xh[$parser]['valuestack']	= array();

		$parser_object->xh[$parser]['method']		= '';



		xml_set_object($parser, $parser_object);

		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true);

		xml_set_element_handler($parser, 'open_tag', 'closing_tag');

		xml_set_character_data_handler($parser, 'character_data');

		//xml_set_default_handler($parser, 'default_handler');





		//-------------------------------------

		//  PARSE + PROCESS XML DATA

		//-------------------------------------



		if ( ! xml_parse($parser, $data, 1))

		{

			// return XML error as a faultCode

			$r = new XML_RPC_Response(0,

			$this->xmlrpcerrxml + xml_get_error_code($parser),

			sprintf('XML error: %s at line %d',

				xml_error_string(xml_get_error_code($parser)),

				xml_get_current_line_number($parser)));

			xml_parser_free($parser);

		}

		elseif ($parser_object->xh[$parser]['isf'])

		{

			return new XML_RPC_Response(0, $this->xmlrpcerr['invalid_return'], $this->xmlrpcstr['invalid_return']);

		}

		else

		{

			xml_parser_free($parser);



			$m = new XML_RPC_Message($parser_object->xh[$parser]['method']);

			$plist='';



			for ($i=0; $i < count($parser_object->xh[$parser]['params']); $i++)

			{

				if ($this->debug === TRUE)

				{

					$plist .= "$i - " .  print_r(get_object_vars($parser_object->xh[$parser]['params'][$i]), TRUE). ";\n";

				}



				$m->addParam($parser_object->xh[$parser]['params'][$i]);

			}



			if ($this->debug === TRUE)

			{

				echo "<pre>";

				echo "---PLIST---\n" . $plist . "\n---PLIST END---\n\n";

				echo "</pre>";

			}



			$r = $this->_execute($m);

		}



		//-------------------------------------

		//  SET DEBUGGING MESSAGE

		//-------------------------------------



		if ($this->debug === TRUE)

		{

			$this->debug_msg = "<!-- DEBUG INFO:\n\n".$plist."\n END DEBUG-->\n";

		}



		return $r;

	}



	// --------------------------------------------------------------------



	/**

	 * Executes the Method

	 *

	 * @access	protected

	 * @param	object

	 * @return	mixed

	 */

	function _execute($m)

	{

		$methName = $m->method_name;



		// Check to see if it is a system call

		$system_call = (strncmp($methName, 'system', 5) == 0) ? TRUE : FALSE;



		if ($this->xss_clean == FALSE)

		{

			$m->xss_clean = FALSE;

		}



		//-------------------------------------

		//  Valid Method

		//-------------------------------------



		if ( ! isset($this->methods[$methName]['function']))

		{

			return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);

		}



		//-------------------------------------

		//  Check for Method (and Object)

		//-------------------------------------



		$method_parts = explode(".", $this->methods[$methName]['function']);

		$objectCall = (isset($method_parts['1']) && $method_parts['1'] != "") ? TRUE : FALSE;



		if ($system_call === TRUE)

		{

			if ( ! is_callable(array($this,$method_parts['1'])))

			{

				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);

			}

		}

		else

		{

			if ($objectCall && ! is_callable(array($method_parts['0'],$method_parts['1'])))

			{

				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);

			}

			elseif ( ! $objectCall && ! is_callable($this->methods[$methName]['function']))

			{

				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);

			}

		}



		//-------------------------------------

		//  Checking Methods Signature

		//-------------------------------------



		if (isset($this->methods[$methName]['signature']))

		{

			$sig = $this->methods[$methName]['signature'];

			for ($i=0; $i<count($sig); $i++)

			{

				$current_sig = $sig[$i];



				if (count($current_sig) == count($m->params)+1)

				{

					for ($n=0; $n < count($m->params); $n++)

					{

						$p = $m->params[$n];

						$pt = ($p->kindOf() == 'scalar') ? $p->scalarval() : $p->kindOf();



						if ($pt != $current_sig[$n+1])

						{

							$pno = $n+1;

							$wanted = $current_sig[$n+1];



							return new XML_RPC_Response(0,

								$this->xmlrpcerr['incorrect_params'],

								$this->xmlrpcstr['incorrect_params'] .

								": Wanted {$wanted}, got {$pt} at param {$pno})");

						}

					}

				}

			}

		}



		//-------------------------------------

		//  Calls the Function

		//-------------------------------------



		if ($objectCall === TRUE)

		{

			if ($method_parts[0] == "this" && $system_call == TRUE)

			{

				return call_user_func(array($this, $method_parts[1]), $m);

			}

			else

			{

				if ($this->object === FALSE)

				{

					$CI =& get_instance();

					return $CI->$method_parts['1']($m);

				}

				else

				{

					return $this->object->$method_parts['1']($m);

					//return call_user_func(array(&$method_parts['0'],$method_parts['1']), $m);

				}

			}

		}

		else

		{

			return call_user_func($this->methods[$methName]['function'], $m);

		}

	}

	

	// --------------------------------------------------------------------



	/**

	 * Server Function:  List Methods

	 *

	 * @access	public

	 * @param	mixed

	 * @return	object

	 */

	function listMethods($m)

	{

		$v = new XML_RPC_Values();

		$output = array();



		foreach ($this->methods as $key => $value)

		{

			$output[] = new XML_RPC_Values($key, 'string');

		}



		foreach ($this->system_methods as $key => $value)

		{

			$output[]= new XML_RPC_Values($key, 'string');

		}



		$v->addArray($output);

		return new XML_RPC_Response($v);

	}

	

	// --------------------------------------------------------------------



	/**

	 * Server Function:  Return Signature for Method

	 *

	 * @access	public

	 * @param	mixed

	 * @return	object

	 */

	function methodSignature($m)

	{

		$parameters = $m->output_parameters();

		$method_name = $parameters[0];



		if (isset($this->methods[$method_name]))

		{

			if ($this->methods[$method_name]['signature'])

			{

				$sigs = array();

				$signature = $this->methods[$method_name]['signature'];



				for ($i=0; $i < count($signature); $i++)

				{

					$cursig = array();

					$inSig = $signature[$i];

					for ($j=0; $j<count($inSig); $j++)

					{

						$cursig[]= new XML_RPC_Values($inSig[$j], 'string');

					}

					$sigs[]= new XML_RPC_Values($cursig, 'array');

				}

				$r = new XML_RPC_Response(new XML_RPC_Values($sigs, 'array'));

			}

			else

			{

				$r = new XML_RPC_Response(new XML_RPC_Values('undef', 'string'));

			}

		}

		else

		{

			$r = new XML_RPC_Response(0,$this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);

		}

		return $r;

	}



	// --------------------------------------------------------------------



	/**

	 * Server Function:  Doc String for Method

	 *

	 * @access	public

	 * @param	mixed

	 * @return	object

	 */

	function methodHelp($m)

	{

		$parameters = $m->output_parameters();

		$method_name = $parameters[0];



		if (isset($this->methods[$method_name]))

		{

			$docstring = isset($this->methods[$method_name]['docstring']) ? $this->methods[$method_name]['docstring'] : '';



			return new XML_RPC_Response(new XML_RPC_Values($docstring, 'string'));

		}

		else

		{

			return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);

		}

	}

	

	// --------------------------------------------------------------------



	/**

	 * Server Function:  Multi-call

	 *

	 * @access	public

	 * @param	mixed

	 * @return	object

	 */

	function multicall($m)

	{

		// Disabled

		return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);



		$parameters = $m->output_parameters();

		$calls = $parameters[0];



		$result = array();



		foreach ($calls as $value)

		{

			//$attempt = $this->_execute(new XML_RPC_Message($value[0], $value[1]));



			$m = new XML_RPC_Message($value[0]);

			$plist='';



			for ($i=0; $i < count($value[1]); $i++)

			{

				$m->addParam(new XML_RPC_Values($value[1][$i], 'string'));

			}



			$attempt = $this->_execute($m);



			if ($attempt->faultCode() != 0)

			{

				return $attempt;

			}



			$result[] = new XML_RPC_Values(array($attempt->value()), 'array');

		}



		return new XML_RPC_Response(new XML_RPC_Values($result, 'array'));

	}



	// --------------------------------------------------------------------



	/**

	 *  Multi-call Function:  Error Handling

	 *

	 * @access	public

	 * @param	mixed

	 * @return	object

	 */

	function multicall_error($err)

	{

		$str  = is_string($err) ? $this->xmlrpcstr["multicall_${err}"] : $err->faultString();

		$code = is_string($err) ? $this->xmlrpcerr["multicall_${err}"] : $err->faultCode();



		$struct['faultCode'] = new XML_RPC_Values($code, 'int');

		$struct['faultString'] = new XML_RPC_Values($str, 'string');



		return new XML_RPC_Values($struct, 'struct');

	}



	// --------------------------------------------------------------------



	/**

	 *  Multi-call Function:  Processes method

	 *

	 * @access	public

	 * @param	mixed

	 * @return	object

	 */

	function do_multicall($call)

	{

		if ($call->kindOf() != 'struct')

		{

			return $this->multicall_error('notstruct');

		}

		elseif ( ! $methName = $call->me['struct']['methodName'])

		{

			return $this->multicall_error('nomethod');

		}



		list($scalar_type,$scalar_value)=each($methName->me);

		$scalar_type = $scalar_type == $this->xmlrpcI4 ? $this->xmlrpcInt : $scalar_type;



		if ($methName->kindOf() != 'scalar' OR $scalar_type != 'string')

		{

			return $this->multicall_error('notstring');

		}

		elseif ($scalar_value == 'system.multicall')

		{

			return $this->multicall_error('recursion');

		}

		elseif ( ! $params = $call->me['struct']['params'])

		{

			return $this->multicall_error('noparams');

		}

		elseif ($params->kindOf() != 'array')

		{

			return $this->multicall_error('notarray');

		}



		list($a,$b)=each($params->me);

		$numParams = count($b);



		$msg = new XML_RPC_Message($scalar_value);

		for ($i = 0; $i < $numParams; $i++)

		{

			$msg->params[] = $params->me['array'][$i];

		}



		$result = $this->_execute($msg);



		if ($result->faultCode() != 0)

		{

			return $this->multicall_error($result);

		}



		return new XML_RPC_Values(array($result->value()), 'array');

	}



}

// END XML_RPC_Server class





/* End of file Xmlrpcs.php */

/* Location: ./system/libraries/Xmlrpcs.php */