diff options
Diffstat (limited to 'Moodle/mod/print/xmlrpcs.inc')
| -rw-r--r-- | Moodle/mod/print/xmlrpcs.inc | 1198 |
1 files changed, 1198 insertions, 0 deletions
diff --git a/Moodle/mod/print/xmlrpcs.inc b/Moodle/mod/print/xmlrpcs.inc new file mode 100644 index 0000000..a089ca5 --- /dev/null +++ b/Moodle/mod/print/xmlrpcs.inc @@ -0,0 +1,1198 @@ +<?php +// by Edd Dumbill (C) 1999-2002 +// <edd@usefulinc.com> +// $Id: xmlrpcs.inc,v 1.71 2008/10/29 23:41:28 ggiunta Exp $ + +// Copyright (c) 1999,2000,2002 Edd Dumbill. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// +// * Neither the name of the "XML-RPC for PHP" nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +// REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED +// OF THE POSSIBILITY OF SUCH DAMAGE. + + // XML RPC Server class + // requires: xmlrpc.inc + + $GLOBALS['xmlrpcs_capabilities'] = array( + // xmlrpc spec: always supported + 'xmlrpc' => new xmlrpcval(array( + 'specUrl' => new xmlrpcval('http://www.xmlrpc.com/spec', 'string'), + 'specVersion' => new xmlrpcval(1, 'int') + ), 'struct'), + // if we support system.xxx functions, we always support multicall, too... + // Note that, as of 2006/09/17, the following URL does not respond anymore + 'system.multicall' => new xmlrpcval(array( + 'specUrl' => new xmlrpcval('http://www.xmlrpc.com/discuss/msgReader$1208', 'string'), + 'specVersion' => new xmlrpcval(1, 'int') + ), 'struct'), + // introspection: version 2! we support 'mixed', too + 'introspection' => new xmlrpcval(array( + 'specUrl' => new xmlrpcval('http://phpxmlrpc.sourceforge.net/doc-2/ch10.html', 'string'), + 'specVersion' => new xmlrpcval(2, 'int') + ), 'struct') + ); + + /* Functions that implement system.XXX methods of xmlrpc servers */ + $_xmlrpcs_getCapabilities_sig=array(array($GLOBALS['xmlrpcStruct'])); + $_xmlrpcs_getCapabilities_doc='This method lists all the capabilites that the XML-RPC server has: the (more or less standard) extensions to the xmlrpc spec that it adheres to'; + $_xmlrpcs_getCapabilities_sdoc=array(array('list of capabilities, described as structs with a version number and url for the spec')); + function _xmlrpcs_getCapabilities($server, $m=null) + { + $outAr = $GLOBALS['xmlrpcs_capabilities']; + // NIL extension + if ($GLOBALS['xmlrpc_null_extension']) { + $outAr['nil'] = new xmlrpcval(array( + 'specUrl' => new xmlrpcval('http://www.ontosys.com/xml-rpc/extensions.php', 'string'), + 'specVersion' => new xmlrpcval(1, 'int') + ), 'struct'); + } + return new xmlrpcresp(new xmlrpcval($outAr, 'struct')); + } + + // listMethods: signature was either a string, or nothing. + // The useless string variant has been removed + $_xmlrpcs_listMethods_sig=array(array($GLOBALS['xmlrpcArray'])); + $_xmlrpcs_listMethods_doc='This method lists all the methods that the XML-RPC server knows how to dispatch'; + $_xmlrpcs_listMethods_sdoc=array(array('list of method names')); + function _xmlrpcs_listMethods($server, $m=null) // if called in plain php values mode, second param is missing + { + + $outAr=array(); + foreach($server->dmap as $key => $val) + { + $outAr[]=&new xmlrpcval($key, 'string'); + } + if($server->allow_system_funcs) + { + foreach($GLOBALS['_xmlrpcs_dmap'] as $key => $val) + { + $outAr[]=&new xmlrpcval($key, 'string'); + } + } + return new xmlrpcresp(new xmlrpcval($outAr, 'array')); + } + + $_xmlrpcs_methodSignature_sig=array(array($GLOBALS['xmlrpcArray'], $GLOBALS['xmlrpcString'])); + $_xmlrpcs_methodSignature_doc='Returns an array of known signatures (an array of arrays) for the method name passed. If no signatures are known, returns a none-array (test for type != array to detect missing signature)'; + $_xmlrpcs_methodSignature_sdoc=array(array('list of known signatures, each sig being an array of xmlrpc type names', 'name of method to be described')); + function _xmlrpcs_methodSignature($server, $m) + { + // let accept as parameter both an xmlrpcval or string + if (is_object($m)) + { + $methName=$m->getParam(0); + $methName=$methName->scalarval(); + } + else + { + $methName=$m; + } + if(strpos($methName, "system.") === 0) + { + $dmap=$GLOBALS['_xmlrpcs_dmap']; $sysCall=1; + } + else + { + $dmap=$server->dmap; $sysCall=0; + } + if(isset($dmap[$methName])) + { + if(isset($dmap[$methName]['signature'])) + { + $sigs=array(); + foreach($dmap[$methName]['signature'] as $inSig) + { + $cursig=array(); + foreach($inSig as $sig) + { + $cursig[]=&new xmlrpcval($sig, 'string'); + } + $sigs[]=&new xmlrpcval($cursig, 'array'); + } + $r=&new xmlrpcresp(new xmlrpcval($sigs, 'array')); + } + else + { + // NB: according to the official docs, we should be returning a + // "none-array" here, which means not-an-array + $r=&new xmlrpcresp(new xmlrpcval('undef', 'string')); + } + } + else + { + $r=&new xmlrpcresp(0,$GLOBALS['xmlrpcerr']['introspect_unknown'], $GLOBALS['xmlrpcstr']['introspect_unknown']); + } + return $r; + } + + $_xmlrpcs_methodHelp_sig=array(array($GLOBALS['xmlrpcString'], $GLOBALS['xmlrpcString'])); + $_xmlrpcs_methodHelp_doc='Returns help text if defined for the method passed, otherwise returns an empty string'; + $_xmlrpcs_methodHelp_sdoc=array(array('method description', 'name of the method to be described')); + function _xmlrpcs_methodHelp($server, $m) + { + // let accept as parameter both an xmlrpcval or string + if (is_object($m)) + { + $methName=$m->getParam(0); + $methName=$methName->scalarval(); + } + else + { + $methName=$m; + } + if(strpos($methName, "system.") === 0) + { + $dmap=$GLOBALS['_xmlrpcs_dmap']; $sysCall=1; + } + else + { + $dmap=$server->dmap; $sysCall=0; + } + if(isset($dmap[$methName])) + { + if(isset($dmap[$methName]['docstring'])) + { + $r=&new xmlrpcresp(new xmlrpcval($dmap[$methName]['docstring']), 'string'); + } + else + { + $r=&new xmlrpcresp(new xmlrpcval('', 'string')); + } + } + else + { + $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['introspect_unknown'], $GLOBALS['xmlrpcstr']['introspect_unknown']); + } + return $r; + } + + $_xmlrpcs_multicall_sig = array(array($GLOBALS['xmlrpcArray'], $GLOBALS['xmlrpcArray'])); + $_xmlrpcs_multicall_doc = 'Boxcar multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details'; + $_xmlrpcs_multicall_sdoc = array(array('list of response structs, where each struct has the usual members', 'list of calls, with each call being represented as a struct, with members "methodname" and "params"')); + function _xmlrpcs_multicall_error($err) + { + if(is_string($err)) + { + $str = $GLOBALS['xmlrpcstr']["multicall_${err}"]; + $code = $GLOBALS['xmlrpcerr']["multicall_${err}"]; + } + else + { + $code = $err->faultCode(); + $str = $err->faultString(); + } + $struct = array(); + $struct['faultCode'] =& new xmlrpcval($code, 'int'); + $struct['faultString'] =& new xmlrpcval($str, 'string'); + return new xmlrpcval($struct, 'struct'); + } + + function _xmlrpcs_multicall_do_call($server, $call) + { + if($call->kindOf() != 'struct') + { + return _xmlrpcs_multicall_error('notstruct'); + } + $methName = @$call->structmem('methodName'); + if(!$methName) + { + return _xmlrpcs_multicall_error('nomethod'); + } + if($methName->kindOf() != 'scalar' || $methName->scalartyp() != 'string') + { + return _xmlrpcs_multicall_error('notstring'); + } + if($methName->scalarval() == 'system.multicall') + { + return _xmlrpcs_multicall_error('recursion'); + } + + $params = @$call->structmem('params'); + if(!$params) + { + return _xmlrpcs_multicall_error('noparams'); + } + if($params->kindOf() != 'array') + { + return _xmlrpcs_multicall_error('notarray'); + } + $numParams = $params->arraysize(); + + $msg =& new xmlrpcmsg($methName->scalarval()); + for($i = 0; $i < $numParams; $i++) + { + if(!$msg->addParam($params->arraymem($i))) + { + $i++; + return _xmlrpcs_multicall_error(new xmlrpcresp(0, + $GLOBALS['xmlrpcerr']['incorrect_params'], + $GLOBALS['xmlrpcstr']['incorrect_params'] . ": probable xml error in param " . $i)); + } + } + + $result = $server->execute($msg); + + if($result->faultCode() != 0) + { + return _xmlrpcs_multicall_error($result); // Method returned fault. + } + + return new xmlrpcval(array($result->value()), 'array'); + } + + function _xmlrpcs_multicall_do_call_phpvals($server, $call) + { + if(!is_array($call)) + { + return _xmlrpcs_multicall_error('notstruct'); + } + if(!array_key_exists('methodName', $call)) + { + return _xmlrpcs_multicall_error('nomethod'); + } + if (!is_string($call['methodName'])) + { + return _xmlrpcs_multicall_error('notstring'); + } + if($call['methodName'] == 'system.multicall') + { + return _xmlrpcs_multicall_error('recursion'); + } + if(!array_key_exists('params', $call)) + { + return _xmlrpcs_multicall_error('noparams'); + } + if(!is_array($call['params'])) + { + return _xmlrpcs_multicall_error('notarray'); + } + + // this is a real dirty and simplistic hack, since we might have received a + // base64 or datetime values, but they will be listed as strings here... + $numParams = count($call['params']); + $pt = array(); + foreach($call['params'] as $val) + $pt[] = php_2_xmlrpc_type(gettype($val)); + + $result = $server->execute($call['methodName'], $call['params'], $pt); + + if($result->faultCode() != 0) + { + return _xmlrpcs_multicall_error($result); // Method returned fault. + } + + return new xmlrpcval(array($result->value()), 'array'); + } + + function _xmlrpcs_multicall($server, $m) + { + $result = array(); + // let accept a plain list of php parameters, beside a single xmlrpc msg object + if (is_object($m)) + { + $calls = $m->getParam(0); + $numCalls = $calls->arraysize(); + for($i = 0; $i < $numCalls; $i++) + { + $call = $calls->arraymem($i); + $result[$i] = _xmlrpcs_multicall_do_call($server, $call); + } + } + else + { + $numCalls=count($m); + for($i = 0; $i < $numCalls; $i++) + { + $result[$i] = _xmlrpcs_multicall_do_call_phpvals($server, $m[$i]); + } + } + + return new xmlrpcresp(new xmlrpcval($result, 'array')); + } + + $GLOBALS['_xmlrpcs_dmap']=array( + 'system.listMethods' => array( + 'function' => '_xmlrpcs_listMethods', + 'signature' => $_xmlrpcs_listMethods_sig, + 'docstring' => $_xmlrpcs_listMethods_doc, + 'signature_docs' => $_xmlrpcs_listMethods_sdoc), + 'system.methodHelp' => array( + 'function' => '_xmlrpcs_methodHelp', + 'signature' => $_xmlrpcs_methodHelp_sig, + 'docstring' => $_xmlrpcs_methodHelp_doc, + 'signature_docs' => $_xmlrpcs_methodHelp_sdoc), + 'system.methodSignature' => array( + 'function' => '_xmlrpcs_methodSignature', + 'signature' => $_xmlrpcs_methodSignature_sig, + 'docstring' => $_xmlrpcs_methodSignature_doc, + 'signature_docs' => $_xmlrpcs_methodSignature_sdoc), + 'system.multicall' => array( + 'function' => '_xmlrpcs_multicall', + 'signature' => $_xmlrpcs_multicall_sig, + 'docstring' => $_xmlrpcs_multicall_doc, + 'signature_docs' => $_xmlrpcs_multicall_sdoc), + 'system.getCapabilities' => array( + 'function' => '_xmlrpcs_getCapabilities', + 'signature' => $_xmlrpcs_getCapabilities_sig, + 'docstring' => $_xmlrpcs_getCapabilities_doc, + 'signature_docs' => $_xmlrpcs_getCapabilities_sdoc) + ); + + $GLOBALS['_xmlrpcs_occurred_errors'] = ''; + $GLOBALS['_xmlrpcs_prev_ehandler'] = ''; + /** + * Error handler used to track errors that occur during server-side execution of PHP code. + * This allows to report back to the client whether an internal error has occurred or not + * using an xmlrpc response object, instead of letting the client deal with the html junk + * that a PHP execution error on the server generally entails. + * + * NB: in fact a user defined error handler can only handle WARNING, NOTICE and USER_* errors. + * + */ + function _xmlrpcs_errorHandler($errcode, $errstring, $filename=null, $lineno=null, $context=null) + { + // obey the @ protocol + if (error_reporting() == 0) + return; + + //if($errcode != E_NOTICE && $errcode != E_WARNING && $errcode != E_USER_NOTICE && $errcode != E_USER_WARNING) + if($errcode != 2048) // do not use E_STRICT by name, since on PHP 4 it will not be defined + { + $GLOBALS['_xmlrpcs_occurred_errors'] = $GLOBALS['_xmlrpcs_occurred_errors'] . $errstring . "\n"; + } + // Try to avoid as much as possible disruption to the previous error handling + // mechanism in place + if($GLOBALS['_xmlrpcs_prev_ehandler'] == '') + { + // The previous error handler was the default: all we should do is log error + // to the default error log (if level high enough) + if(ini_get('log_errors') && (intval(ini_get('error_reporting')) & $errcode)) + { + error_log($errstring); + } + } + else + { + // Pass control on to previous error handler, trying to avoid loops... + if($GLOBALS['_xmlrpcs_prev_ehandler'] != '_xmlrpcs_errorHandler') + { + // NB: this code will NOT work on php < 4.0.2: only 2 params were used for error handlers + if(is_array($GLOBALS['_xmlrpcs_prev_ehandler'])) + { + // the following works both with static class methods and plain object methods as error handler + call_user_func_array($GLOBALS['_xmlrpcs_prev_ehandler'], array($errcode, $errstring, $filename, $lineno, $context)); + } + else + { + $GLOBALS['_xmlrpcs_prev_ehandler']($errcode, $errstring, $filename, $lineno, $context); + } + } + } + } + + $GLOBALS['_xmlrpc_debuginfo']=''; + + /** + * Add a string to the debug info that can be later seralized by the server + * as part of the response message. + * Note that for best compatbility, the debug string should be encoded using + * the $GLOBALS['xmlrpc_internalencoding'] character set. + * @param string $m + * @access public + */ + function xmlrpc_debugmsg($m) + { + $GLOBALS['_xmlrpc_debuginfo'] .= $m . "\n"; + } + + class xmlrpc_server + { + /// array defining php functions exposed as xmlrpc methods by this server + var $dmap=array(); + /** + * Defines how functions in dmap will be invokde: either using an xmlrpc msg object + * or plain php values. + * valid strings are 'xmlrpcvals', 'phpvals' or 'epivals' + */ + var $functions_parameters_type='xmlrpcvals'; + /// controls wether the server is going to echo debugging messages back to the client as comments in response body. valid values: 0,1,2,3 + var $debug = 1; + /** + * When set to true, it will enable HTTP compression of the response, in case + * the client has declared its support for compression in the request. + */ + var $compress_response = false; + /** + * List of http compression methods accepted by the server for requests. + * NB: PHP supports deflate, gzip compressions out of the box if compiled w. zlib + */ + var $accepted_compression = array(); + /// shall we serve calls to system.* methods? + var $allow_system_funcs = true; + /// list of charset encodings natively accepted for requests + var $accepted_charset_encodings = array(); + /** + * charset encoding to be used for response. + * NB: if we can, we will convert the generated response from internal_encoding to the intended one. + * can be: a supported xml encoding (only UTF-8 and ISO-8859-1 at present, unless mbstring is enabled), + * null (leave unspecified in response, convert output stream to US_ASCII), + * 'default' (use xmlrpc library default as specified in xmlrpc.inc, convert output stream if needed), + * or 'auto' (use client-specified charset encoding or same as request if request headers do not specify it (unless request is US-ASCII: then use library default anyway). + * NB: pretty dangerous if you accept every charset and do not have mbstring enabled) + */ + var $response_charset_encoding = ''; + /// storage for internal debug info + var $debug_info = ''; + /// extra data passed at runtime to method handling functions. Used only by EPI layer + var $user_data = null; + + /** + * @param array $dispmap the dispatch map withd efinition of exposed services + * @param boolean $servicenow set to false to prevent the server from runnung upon construction + */ + function xmlrpc_server($dispMap=null, $serviceNow=true) + { + // if ZLIB is enabled, let the server by default accept compressed requests, + // and compress responses sent to clients that support them + if(function_exists('gzinflate')) + { + $this->accepted_compression = array('gzip', 'deflate'); + $this->compress_response = true; + } + + // by default the xml parser can support these 3 charset encodings + $this->accepted_charset_encodings = array('UTF-8', 'ISO-8859-1', 'US-ASCII'); + + // dispMap is a dispatch array of methods + // mapped to function names and signatures + // if a method + // doesn't appear in the map then an unknown + // method error is generated + /* milosch - changed to make passing dispMap optional. + * instead, you can use the class add_to_map() function + * to add functions manually (borrowed from SOAPX4) + */ + if($dispMap) + { + $this->dmap = $dispMap; + if($serviceNow) + { + $this->service(); + } + } + } + + /** + * Set debug level of server. + * @param integer $in debug lvl: determines info added to xmlrpc responses (as xml comments) + * 0 = no debug info, + * 1 = msgs set from user with debugmsg(), + * 2 = add complete xmlrpc request (headers and body), + * 3 = add also all processing warnings happened during method processing + * (NB: this involves setting a custom error handler, and might interfere + * with the standard processing of the php function exposed as method. In + * particular, triggering an USER_ERROR level error will not halt script + * execution anymore, but just end up logged in the xmlrpc response) + * Note that info added at elevel 2 and 3 will be base64 encoded + * @access public + */ + function setDebug($in) + { + $this->debug=$in; + } + + /** + * Return a string with the serialized representation of all debug info + * @param string $charset_encoding the target charset encoding for the serialization + * @return string an XML comment (or two) + */ + function serializeDebug($charset_encoding='') + { + // Tough encoding problem: which internal charset should we assume for debug info? + // It might contain a copy of raw data received from client, ie with unknown encoding, + // intermixed with php generated data and user generated data... + // so we split it: system debug is base 64 encoded, + // user debug info should be encoded by the end user using the INTERNAL_ENCODING + $out = ''; + if ($this->debug_info != '') + { + $out .= "<!-- SERVER DEBUG INFO (BASE64 ENCODED):\n".base64_encode($this->debug_info)."\n-->\n"; + } + if($GLOBALS['_xmlrpc_debuginfo']!='') + { + + $out .= "<!-- DEBUG INFO:\n" . xmlrpc_encode_entitites(str_replace('--', '_-', $GLOBALS['_xmlrpc_debuginfo']), $GLOBALS['xmlrpc_internalencoding'], $charset_encoding) . "\n-->\n"; + // NB: a better solution MIGHT be to use CDATA, but we need to insert it + // into return payload AFTER the beginning tag + //$out .= "<![CDATA[ DEBUG INFO:\n\n" . str_replace(']]>', ']_]_>', $GLOBALS['_xmlrpc_debuginfo']) . "\n]]>\n"; + } + return $out; + } + + /** + * Execute the xmlrpc request, printing the response + * @param string $data the request body. If null, the http POST request will be examined + * @return xmlrpcresp the response object (usually not used by caller...) + * @access public + */ + function service($data=null, $return_payload=false) + { + if ($data === null) + { + // workaround for a known bug in php ver. 5.2.2 that broke $HTTP_RAW_POST_DATA + $ver = phpversion(); + if ($ver[0] >= 5) + { + $data = file_get_contents('php://input'); + } + else + { + $data = isset($GLOBALS['HTTP_RAW_POST_DATA']) ? $GLOBALS['HTTP_RAW_POST_DATA'] : ''; + } + } + $raw_data = $data; + + // reset internal debug info + $this->debug_info = ''; + + // Echo back what we received, before parsing it + if($this->debug > 1) + { + $this->debugmsg("+++GOT+++\n" . $data . "\n+++END+++"); + } + + $r = $this->parseRequestHeaders($data, $req_charset, $resp_charset, $resp_encoding); + if (!$r) + { + $r=$this->parseRequest($data, $req_charset); + } + + // save full body of request into response, for more debugging usages + $r->raw_data = $raw_data; + + if($this->debug > 2 && $GLOBALS['_xmlrpcs_occurred_errors']) + { + $this->debugmsg("+++PROCESSING ERRORS AND WARNINGS+++\n" . + $GLOBALS['_xmlrpcs_occurred_errors'] . "+++END+++"); + } + + $payload=$this->xml_header($resp_charset); + if($this->debug > 0) + { + $payload = $payload . $this->serializeDebug($resp_charset); + } + + // G. Giunta 2006-01-27: do not create response serialization if it has + // already happened. Helps building json magic + if (empty($r->payload)) + { + $r->serialize($resp_charset); + } + $payload = $payload . $r->payload; + + if ($return_payload) + { + return $payload; + } + + // if we get a warning/error that has output some text before here, then we cannot + // add a new header. We cannot say we are sending xml, either... + if(!headers_sent()) + { + header('Content-Type: '.$r->content_type); + // we do not know if client actually told us an accepted charset, but if he did + // we have to tell him what we did + header("Vary: Accept-Charset"); + + // http compression of output: only + // if we can do it, and we want to do it, and client asked us to, + // and php ini settings do not force it already + $php_no_self_compress = !ini_get('zlib.output_compression') && (ini_get('output_handler') != 'ob_gzhandler'); + if($this->compress_response && function_exists('gzencode') && $resp_encoding != '' + && $php_no_self_compress) + { + if(strpos($resp_encoding, 'gzip') !== false) + { + $payload = gzencode($payload); + header("Content-Encoding: gzip"); + header("Vary: Accept-Encoding"); + } + elseif (strpos($resp_encoding, 'deflate') !== false) + { + $payload = gzcompress($payload); + header("Content-Encoding: deflate"); + header("Vary: Accept-Encoding"); + } + } + + // do not ouput content-length header if php is compressing output for us: + // it will mess up measurements + if($php_no_self_compress) + { + header('Content-Length: ' . (int)strlen($payload)); + } + } + else + { + error_log('XML-RPC: xmlrpc_server::service: http headers already sent before response is fully generated. Check for php warning or error messages'); + } + + print $payload; + + // return request, in case subclasses want it + return $r; + } + + /** + * Add a method to the dispatch map + * @param string $methodname the name with which the method will be made available + * @param string $function the php function that will get invoked + * @param array $sig the array of valid method signatures + * @param string $doc method documentation + * @param array $sigdoc the array of valid method signatures docs (one string per param, one for return type) + * @access public + */ + function add_to_map($methodname,$function,$sig=null,$doc=false,$sigdoc=false) + { + $this->dmap[$methodname] = array( + 'function' => $function, + 'docstring' => $doc + ); + if ($sig) + { + $this->dmap[$methodname]['signature'] = $sig; + } + if ($sigdoc) + { + $this->dmap[$methodname]['signature_docs'] = $sigdoc; + } + } + + /** + * Verify type and number of parameters received against a list of known signatures + * @param array $in array of either xmlrpcval objects or xmlrpc type definitions + * @param array $sig array of known signatures to match against + * @access private + */ + function verifySignature($in, $sig) + { + // check each possible signature in turn + if (is_object($in)) + { + $numParams = $in->getNumParams(); + } + else + { + $numParams = count($in); + } + foreach($sig as $cursig) + { + if(count($cursig)==$numParams+1) + { + $itsOK=1; + for($n=0; $n<$numParams; $n++) + { + if (is_object($in)) + { + $p=$in->getParam($n); + if($p->kindOf() == 'scalar') + { + $pt=$p->scalartyp(); + } + else + { + $pt=$p->kindOf(); + } + } + else + { + $pt= $in[$n] == 'i4' ? 'int' : $in[$n]; // dispatch maps never use i4... + } + + // param index is $n+1, as first member of sig is return type + if($pt != $cursig[$n+1] && $cursig[$n+1] != $GLOBALS['xmlrpcValue']) + { + $itsOK=0; + $pno=$n+1; + $wanted=$cursig[$n+1]; + $got=$pt; + break; + } + } + if($itsOK) + { + return array(1,''); + } + } + } + if(isset($wanted)) + { + return array(0, "Wanted ${wanted}, got ${got} at param ${pno}"); + } + else + { + return array(0, "No method signature matches number of parameters"); + } + } + + /** + * Parse http headers received along with xmlrpc request. If needed, inflate request + * @return null on success or an xmlrpcresp + * @access private + */ + function parseRequestHeaders(&$data, &$req_encoding, &$resp_encoding, &$resp_compression) + { + // Play nice to PHP 4.0.x: superglobals were not yet invented... + if(!isset($_SERVER)) + { + $_SERVER = $GLOBALS['HTTP_SERVER_VARS']; + } + + if($this->debug > 1) + { + if(function_exists('getallheaders')) + { + $this->debugmsg(''); // empty line + foreach(getallheaders() as $name => $val) + { + $this->debugmsg("HEADER: $name: $val"); + } + } + + } + + if(isset($_SERVER['HTTP_CONTENT_ENCODING'])) + { + $content_encoding = str_replace('x-', '', $_SERVER['HTTP_CONTENT_ENCODING']); + } + else + { + $content_encoding = ''; + } + + // check if request body has been compressed and decompress it + if($content_encoding != '' && strlen($data)) + { + if($content_encoding == 'deflate' || $content_encoding == 'gzip') + { + // if decoding works, use it. else assume data wasn't gzencoded + if(function_exists('gzinflate') && in_array($content_encoding, $this->accepted_compression)) + { + if($content_encoding == 'deflate' && $degzdata = @gzuncompress($data)) + { + $data = $degzdata; + if($this->debug > 1) + { + $this->debugmsg("\n+++INFLATED REQUEST+++[".strlen($data)." chars]+++\n" . $data . "\n+++END+++"); + } + } + elseif($content_encoding == 'gzip' && $degzdata = @gzinflate(substr($data, 10))) + { + $data = $degzdata; + if($this->debug > 1) + $this->debugmsg("+++INFLATED REQUEST+++[".strlen($data)." chars]+++\n" . $data . "\n+++END+++"); + } + else + { + $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['server_decompress_fail'], $GLOBALS['xmlrpcstr']['server_decompress_fail']); + return $r; + } + } + else + { + //error_log('The server sent deflated data. Your php install must have the Zlib extension compiled in to support this.'); + $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['server_cannot_decompress'], $GLOBALS['xmlrpcstr']['server_cannot_decompress']); + return $r; + } + } + } + + // check if client specified accepted charsets, and if we know how to fulfill + // the request + if ($this->response_charset_encoding == 'auto') + { + $resp_encoding = ''; + if (isset($_SERVER['HTTP_ACCEPT_CHARSET'])) + { + // here we should check if we can match the client-requested encoding + // with the encodings we know we can generate. + /// @todo we should parse q=0.x preferences instead of getting first charset specified... + $client_accepted_charsets = explode(',', strtoupper($_SERVER['HTTP_ACCEPT_CHARSET'])); + // Give preference to internal encoding + $known_charsets = array($GLOBALS['xmlrpc_internalencoding'], 'UTF-8', 'ISO-8859-1', 'US-ASCII'); + foreach ($known_charsets as $charset) + { + foreach ($client_accepted_charsets as $accepted) + if (strpos($accepted, $charset) === 0) + { + $resp_encoding = $charset; + break; + } + if ($resp_encoding) + break; + } + } + } + else + { + $resp_encoding = $this->response_charset_encoding; + } + + if (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) + { + $resp_compression = $_SERVER['HTTP_ACCEPT_ENCODING']; + } + else + { + $resp_compression = ''; + } + + // 'guestimate' request encoding + /// @todo check if mbstring is enabled and automagic input conversion is on: it might mingle with this check??? + $req_encoding = guess_encoding(isset($_SERVER['CONTENT_TYPE']) ? $_SERVER['CONTENT_TYPE'] : '', + $data); + + return null; + } + + /** + * Parse an xml chunk containing an xmlrpc request and execute the corresponding + * php function registered with the server + * @param string $data the xml request + * @param string $req_encoding (optional) the charset encoding of the xml request + * @return xmlrpcresp + * @access private + */ + function parseRequest($data, $req_encoding='') + { + // 2005/05/07 commented and moved into caller function code + //if($data=='') + //{ + // $data=$GLOBALS['HTTP_RAW_POST_DATA']; + //} + + // G. Giunta 2005/02/13: we do NOT expect to receive html entities + // so we do not try to convert them into xml character entities + //$data = xmlrpc_html_entity_xlate($data); + + $GLOBALS['_xh']=array(); + $GLOBALS['_xh']['ac']=''; + $GLOBALS['_xh']['stack']=array(); + $GLOBALS['_xh']['valuestack'] = array(); + $GLOBALS['_xh']['params']=array(); + $GLOBALS['_xh']['pt']=array(); + $GLOBALS['_xh']['isf']=0; + $GLOBALS['_xh']['isf_reason']=''; + $GLOBALS['_xh']['method']=false; // so we can check later if we got a methodname or not + $GLOBALS['_xh']['rt']=''; + + // decompose incoming XML into request structure + if ($req_encoding != '') + { + if (!in_array($req_encoding, array('UTF-8', 'ISO-8859-1', 'US-ASCII'))) + // the following code might be better for mb_string enabled installs, but + // makes the lib about 200% slower... + //if (!is_valid_charset($req_encoding, array('UTF-8', 'ISO-8859-1', 'US-ASCII'))) + { + error_log('XML-RPC: xmlrpc_server::parseRequest: invalid charset encoding of received request: '.$req_encoding); + $req_encoding = $GLOBALS['xmlrpc_defencoding']; + } + /// @BUG this will fail on PHP 5 if charset is not specified in the xml prologue, + // the encoding is not UTF8 and there are non-ascii chars in the text... + /// @todo use an ampty string for php 5 ??? + $parser = xml_parser_create($req_encoding); + } + else + { + $parser = xml_parser_create(); + } + + xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true); + // G. Giunta 2005/02/13: PHP internally uses ISO-8859-1, so we have to tell + // the xml parser to give us back data in the expected charset + // What if internal encoding is not in one of the 3 allowed? + // we use the broadest one, ie. utf8 + // This allows to send data which is native in various charset, + // by extending xmlrpc_encode_entitites() and setting xmlrpc_internalencoding + if (!in_array($GLOBALS['xmlrpc_internalencoding'], array('UTF-8', 'ISO-8859-1', 'US-ASCII'))) + { + xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, 'UTF-8'); + } + else + { + xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $GLOBALS['xmlrpc_internalencoding']); + } + + if ($this->functions_parameters_type != 'xmlrpcvals') + xml_set_element_handler($parser, 'xmlrpc_se', 'xmlrpc_ee_fast'); + else + xml_set_element_handler($parser, 'xmlrpc_se', 'xmlrpc_ee'); + xml_set_character_data_handler($parser, 'xmlrpc_cd'); + xml_set_default_handler($parser, 'xmlrpc_dh'); + if(!xml_parse($parser, $data, 1)) + { + // return XML error as a faultCode + $r=&new xmlrpcresp(0, + $GLOBALS['xmlrpcerrxml']+xml_get_error_code($parser), + sprintf('XML error: %s at line %d, column %d', + xml_error_string(xml_get_error_code($parser)), + xml_get_current_line_number($parser), xml_get_current_column_number($parser))); + xml_parser_free($parser); + } + elseif ($GLOBALS['_xh']['isf']) + { + xml_parser_free($parser); + $r=&new xmlrpcresp(0, + $GLOBALS['xmlrpcerr']['invalid_request'], + $GLOBALS['xmlrpcstr']['invalid_request'] . ' ' . $GLOBALS['_xh']['isf_reason']); + } + else + { + xml_parser_free($parser); + if ($this->functions_parameters_type != 'xmlrpcvals') + { + if($this->debug > 1) + { + $this->debugmsg("\n+++PARSED+++\n".var_export($GLOBALS['_xh']['params'], true)."\n+++END+++"); + } + $r = $this->execute($GLOBALS['_xh']['method'], $GLOBALS['_xh']['params'], $GLOBALS['_xh']['pt']); + } + else + { + // build an xmlrpcmsg object with data parsed from xml + $m=&new xmlrpcmsg($GLOBALS['_xh']['method']); + // now add parameters in + for($i=0; $i<count($GLOBALS['_xh']['params']); $i++) + { + $m->addParam($GLOBALS['_xh']['params'][$i]); + } + + if($this->debug > 1) + { + $this->debugmsg("\n+++PARSED+++\n".var_export($m, true)."\n+++END+++"); + } + $r = $this->execute($m); + } + } + return $r; + } + + /** + * Execute a method invoked by the client, checking parameters used + * @param mixed $m either an xmlrpcmsg obj or a method name + * @param array $params array with method parameters as php types (if m is method name only) + * @param array $paramtypes array with xmlrpc types of method parameters (if m is method name only) + * @return xmlrpcresp + * @access private + */ + function execute($m, $params=null, $paramtypes=null) + { + if (is_object($m)) + { + $methName = $m->method(); + } + else + { + $methName = $m; + } + $sysCall = $this->allow_system_funcs && (strpos($methName, "system.") === 0); + $dmap = $sysCall ? $GLOBALS['_xmlrpcs_dmap'] : $this->dmap; + + if(!isset($dmap[$methName]['function'])) + { + // No such method + return new xmlrpcresp(0, + $GLOBALS['xmlrpcerr']['unknown_method'], + $GLOBALS['xmlrpcstr']['unknown_method']); + } + + // Check signature + if(isset($dmap[$methName]['signature'])) + { + $sig = $dmap[$methName]['signature']; + if (is_object($m)) + { + list($ok, $errstr) = $this->verifySignature($m, $sig); + } + else + { + list($ok, $errstr) = $this->verifySignature($paramtypes, $sig); + } + if(!$ok) + { + // Didn't match. + return new xmlrpcresp( + 0, + $GLOBALS['xmlrpcerr']['incorrect_params'], + $GLOBALS['xmlrpcstr']['incorrect_params'] . ": ${errstr}" + ); + } + } + + $func = $dmap[$methName]['function']; + // let the 'class::function' syntax be accepted in dispatch maps + if(is_string($func) && strpos($func, '::')) + { + $func = explode('::', $func); + } + // verify that function to be invoked is in fact callable + if(!is_callable($func)) + { + error_log("XML-RPC: xmlrpc_server::execute: function $func registered as method handler is not callable"); + return new xmlrpcresp( + 0, + $GLOBALS['xmlrpcerr']['server_error'], + $GLOBALS['xmlrpcstr']['server_error'] . ": no function matches method" + ); + } + + // If debug level is 3, we should catch all errors generated during + // processing of user function, and log them as part of response + if($this->debug > 2) + { + $GLOBALS['_xmlrpcs_prev_ehandler'] = set_error_handler('_xmlrpcs_errorHandler'); + } + if (is_object($m)) + { + if($sysCall) + { + $r = call_user_func($func, $this, $m); + } + else + { + $r = call_user_func($func, $m); + } + if (!is_a($r, 'xmlrpcresp')) + { + error_log("XML-RPC: xmlrpc_server::execute: function $func registered as method handler does not return an xmlrpcresp object"); + if (is_a($r, 'xmlrpcval')) + { + $r =& new xmlrpcresp($r); + } + else + { + $r =& new xmlrpcresp( + 0, + $GLOBALS['xmlrpcerr']['server_error'], + $GLOBALS['xmlrpcstr']['server_error'] . ": function does not return xmlrpcresp object" + ); + } + } + } + else + { + // call a 'plain php' function + if($sysCall) + { + array_unshift($params, $this); + $r = call_user_func_array($func, $params); + } + else + { + // 3rd API convention for method-handling functions: EPI-style + if ($this->functions_parameters_type == 'epivals') + { + $r = call_user_func_array($func, array($methName, $params, $this->user_data)); + // mimic EPI behaviour: if we get an array that looks like an error, make it + // an eror response + if (is_array($r) && array_key_exists('faultCode', $r) && array_key_exists('faultString', $r)) + { + $r =& new xmlrpcresp(0, (integer)$r['faultCode'], (string)$r['faultString']); + } + else + { + // functions using EPI api should NOT return resp objects, + // so make sure we encode the return type correctly + $r =& new xmlrpcresp(php_xmlrpc_encode($r, array('extension_api'))); + } + } + else + { + $r = call_user_func_array($func, $params); + } + } + // the return type can be either an xmlrpcresp object or a plain php value... + if (!is_a($r, 'xmlrpcresp')) + { + // what should we assume here about automatic encoding of datetimes + // and php classes instances??? + $r =& new xmlrpcresp(php_xmlrpc_encode($r, array('auto_dates'))); + } + } + if($this->debug > 2) + { + // note: restore the error handler we found before calling the + // user func, even if it has been changed inside the func itself + if($GLOBALS['_xmlrpcs_prev_ehandler']) + { + set_error_handler($GLOBALS['_xmlrpcs_prev_ehandler']); + } + else + { + restore_error_handler(); + } + } + return $r; + } + + /** + * add a string to the 'internal debug message' (separate from 'user debug message') + * @param string $strings + * @access private + */ + function debugmsg($string) + { + $this->debug_info .= $string."\n"; + } + + /** + * @access private + */ + function xml_header($charset_encoding='') + { + if ($charset_encoding != '') + { + return "<?xml version=\"1.0\" encoding=\"$charset_encoding\"?" . ">\n"; + } + else + { + return "<?xml version=\"1.0\"?" . ">\n"; + } + } + + /** + * A debugging routine: just echoes back the input packet as a string value + * DEPRECATED! + */ + function echoInput() + { + $r=&new xmlrpcresp(new xmlrpcval( "'Aha said I: '" . $GLOBALS['HTTP_RAW_POST_DATA'], 'string')); + print $r->serialize(); + } + } +?>
\ No newline at end of file |