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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'); } }