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<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
* @license https://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 1.0.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
if ( ! function_exists('xml_parser_create'))
{
show_error('Your PHP installation does not support XML');
}
if ( ! class_exists('CI_Xmlrpc', FALSE))
{
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 EllisLab Dev Team
* @link https://codeigniter.com/user_guide/libraries/xmlrpc.html
*/
class CI_Xmlrpcs extends CI_Xmlrpc {
/**
* Array of methods mapped to function names and signatures
*
* @var array
*/
public $methods = array();
/**
* Debug Message
*
* @var string
*/
public $debug_msg = '';
/**
* XML RPC Server methods
*
* @var array
*/
public $system_methods = array();
/**
* Configuration object
*
* @var object
*/
public $object = FALSE;
/**
* Initialize XMLRPC class
*
* @param array $config
* @return void
*/
public function __construct($config = array())
{
parent::__construct();
$this->set_system_methods();
if (isset($config['functions']) && is_array($config['functions']))
{
$this->methods = array_merge($this->methods, $config['functions']);
}
log_message('info', 'XML-RPC Server Class Initialized');
}
// --------------------------------------------------------------------
/**
* Initialize Prefs and Serve
*
* @param mixed
* @return void
*/
public function initialize($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
*
* @return void
*/
public 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
*
* @return void
*/
public function serve()
{
$r = $this->parseRequest();
$payload = '<?xml version="1.0" encoding="'.$this->xmlrpc_defencoding.'"?'.'>'."\n".$this->debug_msg.$r->prepare_response();
header('Content-Type: text/xml');
header('Content-Length: '.strlen($payload));
exit($payload);
}
// --------------------------------------------------------------------
/**
* Add Method to Class
*
* @param string method name
* @param string function
* @param string signature
* @param string docstring
* @return void
*/
public function add_to_map($methodname, $function, $sig, $doc)
{
$this->methods[$methodname] = array(
'function' => $function,
'signature' => $sig,
'docstring' => $doc
);
}
// --------------------------------------------------------------------
/**
* Parse Server Request
*
* @param string data
* @return object xmlrpc response
*/
public function parseRequest($data = '')
{
//-------------------------------------
// Get Data
//-------------------------------------
if ($data === '')
{
$CI =& get_instance();
if ($CI->input->method() === 'post')
{
$data = $CI->input->raw_input_stream;
}
}
//-------------------------------------
// Set up XML Parser
//-------------------------------------
$parser = xml_parser_create($this->xmlrpc_defencoding);
$parser_object = new XML_RPC_Message('filler');
$pname = (string) $parser;
$parser_object->xh[$pname] = array(
'isf' => 0,
'isf_reason' => '',
'params' => array(),
'stack' => array(),
'valuestack' => array(),
'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[$pname]['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[$pname]['method']);
$plist = '';
for ($i = 0, $c = count($parser_object->xh[$pname]['params']); $i < $c; $i++)
{
if ($this->debug === TRUE)
{
$plist .= $i.' - '.print_r(get_object_vars($parser_object->xh[$pname]['params'][$i]), TRUE).";\n";
}
$m->addParam($parser_object->xh[$pname]['params'][$i]);
}
if ($this->debug === TRUE)
{
echo "<pre>---PLIST---\n".$plist."\n---PLIST END---\n\n</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 $r;
}
// --------------------------------------------------------------------
/**
* Executes the Method
*
* @param object
* @return mixed
*/
protected function _execute($m)
{
$methName = $m->method_name;
// Check to see if it is a system call
$system_call = (strpos($methName, 'system') === 0);
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']);
$objectCall = ! empty($method_parts[1]);
if ($system_call === TRUE)
{
if ( ! is_callable(array($this, $method_parts[1])))
{
return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
}
}
elseif (($objectCall && ! is_callable(array($method_parts[0], $method_parts[1])))
OR ( ! $objectCall && ! is_callable($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, $c = count($sig); $i < $c; $i++)
{
$current_sig = $sig[$i];
if (count($current_sig) === count($m->params)+1)
{
for ($n = 0, $mc = count($m->params); $n < $mc; $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]), $m);
}
elseif ($this->object === FALSE)
{
return get_instance()->{$method_parts[1]}($m);
}
return $this->object->{$method_parts[1]}($m);
}
return call_user_func($this->methods[$methName]['function'], $m);
}
// --------------------------------------------------------------------
/**
* Server Function: List Methods
*
* @param mixed
* @return object
*/
public function listMethods($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($v);
}
// --------------------------------------------------------------------
/**
* Server Function: Return Signature for Method
*
* @param mixed
* @return object
*/
public function methodSignature($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, $c = count($signature); $i < $c; $i++)
{
$cursig = array();
$inSig = $signature[$i];
for ($j = 0, $jc = count($inSig); $j < $jc; $j++)
{
$cursig[]= new XML_RPC_Values($inSig[$j], 'string');
}
$sigs[] = new XML_RPC_Values($cursig, 'array');
}
return new XML_RPC_Response(new XML_RPC_Values($sigs, 'array'));
}
return new XML_RPC_Response(new XML_RPC_Values('undef', 'string'));
}
return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
}
// --------------------------------------------------------------------
/**
* Server Function: Doc String for Method
*
* @param mixed
* @return object
*/
public function methodHelp($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'));
}
return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
}
// --------------------------------------------------------------------
/**
* Server Function: Multi-call
*
* @param mixed
* @return object
*/
public function multicall($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)
{
$m = new XML_RPC_Message($value[0]);
$plist = '';
for ($i = 0, $c = count($value[1]); $i < $c; $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($result, 'array'));
}
// --------------------------------------------------------------------
/**
* Multi-call Function: Error Handling
*
* @param mixed
* @return object
*/
public function multicall_error($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($struct, 'struct');
}
// --------------------------------------------------------------------
/**
* Multi-call Function: Processes method
*
* @param mixed
* @return object
*/
public function do_multicall($call)
{
if ($call->kindOf() !== 'struct')
{
return $this->multicall_error('notstruct');
}
elseif ( ! $methName = $call->me['struct']['methodName'])
{
return $this->multicall_error('nomethod');
}
list($scalar_value, $scalar_type) = array(reset($methName->me), key($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 $this->multicall_error('notarray');
}
list($b, $a) = array(reset($params->me), key($params->me));
$msg = new XML_RPC_Message($scalar_value);
for ($i = 0, $numParams = count($b); $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');
}
}
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