nucleus/libs/xmlrpcs.inc.php

   1 <?php
   2 // by Edd Dumbill (C) 1999-2002
   3 // <edd@usefulinc.com>
   4 // $Original: xmlrpcs.inc,v 1.66 2006/09/17 21:25:06 ggiunta Exp $
   5 // $Id: xmlrpcs.inc.php 1737 2012-04-10 14:32:11Z sakamocchi $
   6
   7 // Copyright (c) 1999,2000,2002 Edd Dumbill.
   8 // All rights reserved.
   9 //
  10 // Redistribution and use in source and binary forms, with or without
  11 // modification, are permitted provided that the following conditions
  12 // are met:
  13 //
  14 //    * Redistributions of source code must retain the above copyright
  15 //      notice, this list of conditions and the following disclaimer.
  16 //
  17 //    * Redistributions in binary form must reproduce the above
  18 //      copyright notice, this list of conditions and the following
  19 //      disclaimer in the documentation and/or other materials provided
  20 //      with the distribution.
  21 //
  22 //    * Neither the name of the "XML-RPC for PHP" nor the names of its
  23 //      contributors may be used to endorse or promote products derived
  24 //      from this software without specific prior written permission.
  25 //
  26 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  27 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  28 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  29 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  30 // REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  31 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  32 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  33 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35 // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  37 // OF THE POSSIBILITY OF SUCH DAMAGE.
  38
  39         // XML RPC Server class
  40         // requires: xmlrpc.inc
  41
  42         $GLOBALS['xmlrpcs_capabilities'] = array(
  43                 // xmlrpc spec: always supported
  44                 'xmlrpc' => new xmlrpcval(array(
  45                         'specUrl' => new xmlrpcval('http://www.xmlrpc.com/spec', 'string'),
  46                         'specVersion' => new xmlrpcval(1, 'int')
  47                 ), 'struct'),
  48                 // if we support system.xxx functions, we always support multicall, too...
  49                 // Note that, as of 2006/09/17, the following URL does not respond anymore
  50                 'system.multicall' => new xmlrpcval(array(
  51                         'specUrl' => new xmlrpcval('http://www.xmlrpc.com/discuss/msgReader$1208', 'string'),
  52                         'specVersion' => new xmlrpcval(1, 'int')
  53                 ), 'struct'),
  54                 // introspection: version 2! we support 'mixed', too
  55                 'introspection' => new xmlrpcval(array(
  56                         'specUrl' => new xmlrpcval('http://phpxmlrpc.sourceforge.net/doc-2/ch10.html', 'string'),
  57                         'specVersion' => new xmlrpcval(2, 'int')
  58                 ), 'struct')
  59         );
  60
  61         /* Functions that implement system.XXX methods of xmlrpc servers */
  62         $_xmlrpcs_getCapabilities_sig=array(array($GLOBALS['xmlrpcStruct']));
  63         $_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';
  64         $_xmlrpcs_getCapabilities_sdoc=array(array('list of capabilities, described as structs with a version number and url for the spec'));
  65         function _xmlrpcs_getCapabilities($server, $m=null)
  66         {
  67                 $outAr = $GLOBALS['xmlrpcs_capabilities'];
  68                 // NIL extension
  69                 if ($GLOBALS['xmlrpc_null_extension']) {
  70                         $outAr['nil'] = new xmlrpcval(array(
  71                                 'specUrl' => new xmlrpcval('http://www.ontosys.com/xml-rpc/extensions.php', 'string'),
  72                                 'specVersion' => new xmlrpcval(1, 'int')
  73                         ), 'struct');
  74                 }
  75                 return new xmlrpcresp(new xmlrpcval($outAr, 'struct'));
  76         }
  77
  78         // listMethods: signature was either a string, or nothing.
  79         // The useless string variant has been removed
  80         $_xmlrpcs_listMethods_sig=array(array($GLOBALS['xmlrpcArray']));
  81         $_xmlrpcs_listMethods_doc='This method lists all the methods that the XML-RPC server knows how to dispatch';
  82         $_xmlrpcs_listMethods_sdoc=array(array('list of method names'));
  83         function _xmlrpcs_listMethods($server, $m=null) // if called in plain php values mode, second param is missing
  84         {
  85
  86                 $outAr=array();
  87                 foreach($server->dmap as $key => $val)
  88                 {
  89                         $outAr[] = new xmlrpcval($key, 'string');
  90                 }
  91                 if($server->allow_system_funcs)
  92                 {
  93                         foreach($GLOBALS['_xmlrpcs_dmap'] as $key => $val)
  94                         {
  95                                 $outAr[] = new xmlrpcval($key, 'string');
  96                         }
  97                 }
  98                 return new xmlrpcresp(new xmlrpcval($outAr, 'array'));
  99         }
 100
 101         $_xmlrpcs_methodSignature_sig=array(array($GLOBALS['xmlrpcArray'], $GLOBALS['xmlrpcString']));
 102         $_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)';
 103         $_xmlrpcs_methodSignature_sdoc=array(array('list of known signatures, each sig being an array of xmlrpc type names', 'name of method to be described'));
 104         function _xmlrpcs_methodSignature($server, $m)
 105         {
 106                 // let accept as parameter both an xmlrpcval or string
 107                 if (is_object($m))
 108                 {
 109                         $methName=$m->getParam(0);
 110                         $methName=$methName->scalarval();
 111                 }
 112                 else
 113                 {
 114                         $methName=$m;
 115                 }
 116                 if(i18n::strpos($methName, "system.") === 0)
 117                 {
 118                         $dmap=$GLOBALS['_xmlrpcs_dmap']; $sysCall=1;
 119                 }
 120                 else
 121                 {
 122                         $dmap=$server->dmap; $sysCall=0;
 123                 }
 124                 if(isset($dmap[$methName]))
 125                 {
 126                         if(isset($dmap[$methName]['signature']))
 127                         {
 128                                 $sigs=array();
 129                                 foreach($dmap[$methName]['signature'] as $inSig)
 130                                 {
 131                                         $cursig=array();
 132                                         foreach($inSig as $sig)
 133                                         {
 134                                                 $cursig[]= new xmlrpcval($sig, 'string');
 135                                         }
 136                                         $sigs[] = new xmlrpcval($cursig, 'array');
 137                                 }
 138                                 $r= new xmlrpcresp(new xmlrpcval($sigs, 'array'));
 139                         }
 140                         else
 141                         {
 142                                 // NB: according to the official docs, we should be returning a
 143                                 // "none-array" here, which means not-an-array
 144                                 $r = new xmlrpcresp(new xmlrpcval('undef', 'string'));
 145                         }
 146                 }
 147                 else
 148                 {
 149                         $r = new xmlrpcresp(0,$GLOBALS['xmlrpcerr']['introspect_unknown'], $GLOBALS['xmlrpcstr']['introspect_unknown']);
 150                 }
 151                 return $r;
 152         }
 153
 154         $_xmlrpcs_methodHelp_sig=array(array($GLOBALS['xmlrpcString'], $GLOBALS['xmlrpcString']));
 155         $_xmlrpcs_methodHelp_doc='Returns help text if defined for the method passed, otherwise returns an empty string';
 156         $_xmlrpcs_methodHelp_sdoc=array(array('method description', 'name of the method to be described'));
 157         function _xmlrpcs_methodHelp($server, $m)
 158         {
 159                 // let accept as parameter both an xmlrpcval or string
 160                 if (is_object($m))
 161                 {
 162                         $methName=$m->getParam(0);
 163                         $methName=$methName->scalarval();
 164                 }
 165                 else
 166                 {
 167                         $methName=$m;
 168                 }
 169                 if(i18n::strpos($methName, "system.") === 0)
 170                 {
 171                         $dmap=$GLOBALS['_xmlrpcs_dmap']; $sysCall=1;
 172                 }
 173                 else
 174                 {
 175                         $dmap=$server->dmap; $sysCall=0;
 176                 }
 177                 if(isset($dmap[$methName]))
 178                 {
 179                         if(isset($dmap[$methName]['docstring']))
 180                         {
 181                                 $r = new xmlrpcresp(new xmlrpcval($dmap[$methName]['docstring']), 'string');
 182                         }
 183                         else
 184                         {
 185                                 $r = new xmlrpcresp(new xmlrpcval('', 'string'));
 186                         }
 187                 }
 188                 else
 189                 {
 190                         $r = new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['introspect_unknown'], $GLOBALS['xmlrpcstr']['introspect_unknown']);
 191                 }
 192                 return $r;
 193         }
 194
 195         $_xmlrpcs_multicall_sig = array(array($GLOBALS['xmlrpcArray'], $GLOBALS['xmlrpcArray']));
 196         $_xmlrpcs_multicall_doc = 'Boxcar multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details';
 197         $_xmlrpcs_multicall_sdoc = array(array('list of response structs, where each struct has the usual members', 'list of calls, with each call being represented as a struct, with members "methodname" and "params"'));
 198         function _xmlrpcs_multicall_error($err)
 199         {
 200                 if(is_string($err))
 201                 {
 202                         $str = $GLOBALS['xmlrpcstr']["multicall_${err}"];
 203                         $code = $GLOBALS['xmlrpcerr']["multicall_${err}"];
 204                 }
 205                 else
 206                 {
 207                         $code = $err->faultCode();
 208                         $str = $err->faultString();
 209                 }
 210                 $struct = array();
 211                 $struct['faultCode'] = new xmlrpcval($code, 'int');
 212                 $struct['faultString'] = new xmlrpcval($str, 'string');
 213                 return new xmlrpcval($struct, 'struct');
 214         }
 215
 216         function _xmlrpcs_multicall_do_call($server, $call)
 217         {
 218                 if($call->kindOf() != 'struct')
 219                 {
 220                         return _xmlrpcs_multicall_error('notstruct');
 221                 }
 222                 $methName = @$call->structmem('methodName');
 223                 if(!$methName)
 224                 {
 225                         return _xmlrpcs_multicall_error('nomethod');
 226                 }
 227                 if($methName->kindOf() != 'scalar' || $methName->scalartyp() != 'string')
 228                 {
 229                         return _xmlrpcs_multicall_error('notstring');
 230                 }
 231                 if($methName->scalarval() == 'system.multicall')
 232                 {
 233                         return _xmlrpcs_multicall_error('recursion');
 234                 }
 235
 236                 $params = @$call->structmem('params');
 237                 if(!$params)
 238                 {
 239                         return _xmlrpcs_multicall_error('noparams');
 240                 }
 241                 if($params->kindOf() != 'array')
 242                 {
 243                         return _xmlrpcs_multicall_error('notarray');
 244                 }
 245                 $numParams = $params->arraysize();
 246
 247                 $msg = new xmlrpcmsg($methName->scalarval());
 248                 for($i = 0; $i < $numParams; $i++)
 249                 {
 250                         if(!$msg->addParam($params->arraymem($i)))
 251                         {
 252                                 $i++;
 253                                 return _xmlrpcs_multicall_error(new xmlrpcresp(0,
 254                                         $GLOBALS['xmlrpcerr']['incorrect_params'],
 255                                         $GLOBALS['xmlrpcstr']['incorrect_params'] . ": probable xml error in param " . $i));
 256                         }
 257                 }
 258
 259                 $result = $server->execute($msg);
 260
 261                 if($result->faultCode() != 0)
 262                 {
 263                         return _xmlrpcs_multicall_error($result);               // Method returned fault.
 264                 }
 265
 266                 return new xmlrpcval(array($result->value()), 'array');
 267         }
 268
 269         function _xmlrpcs_multicall_do_call_phpvals($server, $call)
 270         {
 271                 if(!is_array($call))
 272                 {
 273                         return _xmlrpcs_multicall_error('notstruct');
 274                 }
 275                 if(!array_key_exists('methodName', $call))
 276                 {
 277                         return _xmlrpcs_multicall_error('nomethod');
 278                 }
 279                 if (!is_string($call['methodName']))
 280                 {
 281                         return _xmlrpcs_multicall_error('notstring');
 282                 }
 283                 if($call['methodName'] == 'system.multicall')
 284                 {
 285                         return _xmlrpcs_multicall_error('recursion');
 286                 }
 287                 if(!array_key_exists('params', $call))
 288                 {
 289                         return _xmlrpcs_multicall_error('noparams');
 290                 }
 291                 if(!is_array($call['params']))
 292                 {
 293                         return _xmlrpcs_multicall_error('notarray');
 294                 }
 295
 296                 // this is a real dirty and simplistic hack, since we might have received a
 297                 // base64 or datetime values, but they will be listed as strings here...
 298                 $numParams = count($call['params']);
 299                 $pt = array();
 300                 foreach($call['params'] as $val)
 301                         $pt[] = php_2_xmlrpc_type(gettype($val));
 302
 303                 $result = $server->execute($call['methodName'], $call['params'], $pt);
 304
 305                 if($result->faultCode() != 0)
 306                 {
 307                         return _xmlrpcs_multicall_error($result);               // Method returned fault.
 308                 }
 309
 310                 return new xmlrpcval(array($result->value()), 'array');
 311         }
 312
 313         function _xmlrpcs_multicall($server, $m)
 314         {
 315                 $result = array();
 316                 // let accept a plain list of php parameters, beside a single xmlrpc msg object
 317                 if (is_object($m))
 318                 {
 319                         $calls = $m->getParam(0);
 320                         $numCalls = $calls->arraysize();
 321                         for($i = 0; $i < $numCalls; $i++)
 322                         {
 323                                 $call = $calls->arraymem($i);
 324                                 $result[$i] = _xmlrpcs_multicall_do_call($server, $call);
 325                         }
 326                 }
 327                 else
 328                 {
 329                         $numCalls=count($m);
 330                         for($i = 0; $i < $numCalls; $i++)
 331                         {
 332                                 $result[$i] = _xmlrpcs_multicall_do_call_phpvals($server, $m[$i]);
 333                         }
 334                 }
 335
 336                 return new xmlrpcresp(new xmlrpcval($result, 'array'));
 337         }
 338
 339         $GLOBALS['_xmlrpcs_dmap']=array(
 340                 'system.listMethods' => array(
 341                         'function' => '_xmlrpcs_listMethods',
 342                         'signature' => $_xmlrpcs_listMethods_sig,
 343                         'docstring' => $_xmlrpcs_listMethods_doc,
 344                         'signature_docs' => $_xmlrpcs_listMethods_sdoc),
 345                 'system.methodHelp' => array(
 346                         'function' => '_xmlrpcs_methodHelp',
 347                         'signature' => $_xmlrpcs_methodHelp_sig,
 348                         'docstring' => $_xmlrpcs_methodHelp_doc,
 349                         'signature_docs' => $_xmlrpcs_methodHelp_sdoc),
 350                 'system.methodSignature' => array(
 351                         'function' => '_xmlrpcs_methodSignature',
 352                         'signature' => $_xmlrpcs_methodSignature_sig,
 353                         'docstring' => $_xmlrpcs_methodSignature_doc,
 354                         'signature_docs' => $_xmlrpcs_methodSignature_sdoc),
 355                 'system.multicall' => array(
 356                         'function' => '_xmlrpcs_multicall',
 357                         'signature' => $_xmlrpcs_multicall_sig,
 358                         'docstring' => $_xmlrpcs_multicall_doc,
 359                         'signature_docs' => $_xmlrpcs_multicall_sdoc),
 360                 'system.getCapabilities' => array(
 361                         'function' => '_xmlrpcs_getCapabilities',
 362                         'signature' => $_xmlrpcs_getCapabilities_sig,
 363                         'docstring' => $_xmlrpcs_getCapabilities_doc,
 364                         'signature_docs' => $_xmlrpcs_getCapabilities_sdoc)
 365         );
 366
 367         $GLOBALS['_xmlrpcs_occurred_errors'] = '';
 368         $GLOBALS['_xmlrpcs_prev_ehandler'] = '';
 369         /**
 370         * Error handler used to track errors that occur during server-side execution of PHP code.
 371         * This allows to report back to the client whether an internal error has occurred or not
 372         * using an xmlrpc response object, instead of letting the client deal with the html junk
 373         * that a PHP execution error on the server generally entails.
 374         *
 375         * NB: in fact a user defined error handler can only handle WARNING, NOTICE and USER_* errors.
 376         *
 377         */
 378         function _xmlrpcs_errorHandler($errcode, $errstring, $filename=null, $lineno=null, $context=null)
 379         {
 380                 // obey the @ protocol
 381                 if (error_reporting() == 0)
 382                         return;
 383
 384                 //if($errcode != E_NOTICE && $errcode != E_WARNING && $errcode != E_USER_NOTICE && $errcode != E_USER_WARNING)
 385                 if($errcode != 2048) // do not use E_STRICT by name, since on PHP 4 it will not be defined
 386                 {
 387                         $GLOBALS['_xmlrpcs_occurred_errors'] = $GLOBALS['_xmlrpcs_occurred_errors'] . $errstring . "\n";
 388                 }
 389                 // Try to avoid as much as possible disruption to the previous error handling
 390                 // mechanism in place
 391                 if($GLOBALS['_xmlrpcs_prev_ehandler'] == '')
 392                 {
 393                         // The previous error handler was the default: all we should do is log error
 394                         // to the default error log (if level high enough)
 395                         if(ini_get('log_errors') && (intval(ini_get('error_reporting')) & $errcode))
 396                         {
 397                                 error_log($errstring);
 398                         }
 399                 }
 400                 else
 401                 {
 402                         // Pass control on to previous error handler, trying to avoid loops...
 403                         if($GLOBALS['_xmlrpcs_prev_ehandler'] != '_xmlrpcs_errorHandler')
 404                         {
 405                                 // NB: this code will NOT work on php < 4.0.2: only 2 params were used for error handlers
 406                                 if(is_array($GLOBALS['_xmlrpcs_prev_ehandler']))
 407                                 {
 408                                         $GLOBALS['_xmlrpcs_prev_ehandler'][0]->$GLOBALS['_xmlrpcs_prev_ehandler'][1]($errcode, $errstring, $filename, $lineno, $context);
 409                                 }
 410                                 else
 411                                 {
 412                                         $GLOBALS['_xmlrpcs_prev_ehandler']($errcode, $errstring, $filename, $lineno, $context);
 413                                 }
 414                         }
 415                 }
 416         }
 417
 418         $GLOBALS['_xmlrpc_debuginfo']='';
 419
 420         /**
 421         * Add a string to the debug info that can be later seralized by the server
 422         * as part of the response message.
 423         * Note that for best compatbility, the debug string should be encoded using
 424         * the $GLOBALS['xmlrpc_internalencoding'] character set.
 425         * @param string $m
 426         * @access public
 427         */
 428         function xmlrpc_debugmsg($m)
 429         {
 430                 $GLOBALS['_xmlrpc_debuginfo'] .= $m . "\n";
 431         }
 432
 433         class xmlrpc_server
 434         {
 435                 /// array defining php functions exposed as xmlrpc methods by this server
 436                 var $dmap=array();
 437                 /**
 438                 * Defines how functions in dmap will be invokde: either using an xmlrpc msg object
 439                 * or plain php values.
 440                 * valid strings are 'xmlrpcvals', 'phpvals' or 'epivals'
 441                 */
 442                 var $functions_parameters_type='xmlrpcvals';
 443                 /// 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
 444                 var $debug = 1;
 445                 /**
 446                 * When set to true, it will enable HTTP compression of the response, in case
 447                 * the client has declared its support for compression in the request.
 448                 */
 449                 var $compress_response = false;
 450                 /**
 451                 * List of http compression methods accepted by the server for requests.
 452                 * NB: PHP supports deflate, gzip compressions out of the box if compiled w. zlib
 453                 */
 454                 var $accepted_compression = array();
 455                 /// shall we serve calls to system.* methods?
 456                 var $allow_system_funcs = true;
 457                 /// list of charset encodings natively accepted for requests
 458                 var $accepted_charset_encodings = array();
 459                 /**
 460                 * charset encoding to be used for response.
 461                 * NB: if we can, we will convert the generated response from internal_encoding to the intended one.
 462                 * can be: a supported xml encoding (only UTF-8 and ISO-8859-1 at present, unless mbstring is enabled),
 463                 * null (leave unspecified in response, convert output stream to US_ASCII),
 464                 * 'default' (use xmlrpc library default as specified in xmlrpc.inc, convert output stream if needed),
 465                 * 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).
 466                 * NB: pretty dangerous if you accept every charset and do not have mbstring enabled)
 467                 */
 468                 var $response_charset_encoding = '';
 469                 /// storage for internal debug info
 470                 var $debug_info = '';
 471                 /// extra data passed at runtime to method handling functions. Used only by EPI layer
 472                 var $user_data = null;
 473
 474                 /**
 475                 * @param array $dispmap the dispatch map withd efinition of exposed services
 476                 * @param boolean $servicenow set to false to prevent the server from runnung upon construction
 477                 */
 478                 function xmlrpc_server($dispMap=null, $serviceNow=true)
 479                 {
 480                         // if ZLIB is enabled, let the server by default accept compressed requests,
 481                         // and compress responses sent to clients that support them
 482                         if(function_exists('gzinflate'))
 483                         {
 484                                 $this->accepted_compression = array('gzip', 'deflate');
 485                                 $this->compress_response = true;
 486                         }
 487
 488                         // by default the xml parser can support these 3 charset encodings
 489                         $this->accepted_charset_encodings = array('UTF-8', 'ISO-8859-1', 'US-ASCII');
 490
 491                         // dispMap is a dispatch array of methods
 492                         // mapped to function names and signatures
 493                         // if a method
 494                         // doesn't appear in the map then an unknown
 495                         // method error is generated
 496                         /* milosch - changed to make passing dispMap optional.
 497                          * instead, you can use the class add_to_map() function
 498                          * to add functions manually (borrowed from SOAPX4)
 499                          */
 500                         if($dispMap)
 501                         {
 502                                 $this->dmap = $dispMap;
 503                                 if($serviceNow)
 504                                 {
 505                                         $this->service();
 506                                 }
 507                         }
 508                 }
 509
 510                 /**
 511                 * Set debug level of server.
 512                 * @param integer $in debug lvl: determines info added to xmlrpc responses (as xml comments)
 513                 * 0 = no debug info,
 514                 * 1 = msgs set from user with debugmsg(),
 515                 * 2 = add complete xmlrpc request (headers and body),
 516                 * 3 = add also all processing warnings happened during method processing
 517                 * (NB: this involves setting a custom error handler, and might interfere
 518                 * with the standard processing of the php function exposed as method. In
 519                 * particular, triggering an USER_ERROR level error will not halt script
 520                 * execution anymore, but just end up logged in the xmlrpc response)
 521                 * Note that info added at elevel 2 and 3 will be base64 encoded
 522                 * @access public
 523                 */
 524                 function setDebug($in)
 525                 {
 526                         $this->debug=$in;
 527                 }
 528
 529                 /**
 530                 * Return a string with the serialized representation of all debug info
 531                 * @param string $charset_encoding the target charset encoding for the serialization
 532                 * @return string an XML comment (or two)
 533                 */
 534                 function serializeDebug($charset_encoding='')
 535                 {
 536                         // Tough encoding problem: which internal charset should we assume for debug info?
 537                         // It might contain a copy of raw data received from client, ie with unknown encoding,
 538                         // intermixed with php generated data and user generated data...
 539                         // so we split it: system debug is base 64 encoded,
 540                         // user debug info should be encoded by the end user using the INTERNAL_ENCODING
 541                         $out = '';
 542                         if ($this->debug_info != '')
 543                         {
 544                                 $out .= "<!-- SERVER DEBUG INFO (BASE64 ENCODED):\n".base64_encode($this->debug_info)."\n-->\n";
 545                         }
 546                         if($GLOBALS['_xmlrpc_debuginfo']!='')
 547                         {
 548
 549                                 $out .= "<!-- DEBUG INFO:\n" . xmlrpc_encode_entitites(str_replace('--', '_-', $GLOBALS['_xmlrpc_debuginfo']), $GLOBALS['xmlrpc_internalencoding'], $charset_encoding) . "\n-->\n";
 550                                 // NB: a better solution MIGHT be to use CDATA, but we need to insert it
 551                                 // into return payload AFTER the beginning tag
 552                                 //$out .= "<![CDATA[ DEBUG INFO:\n\n" . str_replace(']]>', ']_]_>', $GLOBALS['_xmlrpc_debuginfo']) . "\n]]>\n";
 553                         }
 554                         return $out;
 555                 }
 556
 557                 /**
 558                 * Execute the xmlrpc request, printing the response
 559                 * @param string $data the request body. If null, the http POST request will be examined
 560                 * @return xmlrpcresp the response object (usually not used by caller...)
 561                 * @access public
 562                 */
 563                 function service($data=null, $return_payload=false)
 564                 {
 565                         if ($data === null)
 566                         {
 567                                 $data = isset($GLOBALS['HTTP_RAW_POST_DATA']) ? $GLOBALS['HTTP_RAW_POST_DATA'] : '';
 568                         }
 569                         $raw_data = $data;
 570
 571                         // reset internal debug info
 572                         $this->debug_info = '';
 573
 574                         // Echo back what we received, before parsing it
 575                         if($this->debug > 1)
 576                         {
 577                                 $this->debugmsg("+++GOT+++\n" . $data . "\n+++END+++");
 578                         }
 579
 580                         $r = $this->parseRequestHeaders($data, $req_charset, $resp_charset, $resp_encoding);
 581                         if (!$r)
 582                         {
 583                                 $r=$this->parseRequest($data, $req_charset);
 584                         }
 585
 586                         // save full body of request into response, for more debugging usages
 587                         $r->raw_data = $raw_data;
 588
 589                         if($this->debug > 2 && $GLOBALS['_xmlrpcs_occurred_errors'])
 590                         {
 591                                 $this->debugmsg("+++PROCESSING ERRORS AND WARNINGS+++\n" .
 592                                         $GLOBALS['_xmlrpcs_occurred_errors'] . "+++END+++");
 593                         }
 594
 595                         $payload=$this->xml_header($resp_charset);
 596                         if($this->debug > 0)
 597                         {
 598                                 $payload = $payload . $this->serializeDebug($resp_charset);
 599                         }
 600
 601                         // G. Giunta 2006-01-27: do not create response serialization if it has
 602                         // already happened. Helps building json magic
 603                         if (empty($r->payload))
 604                         {
 605                                 $r->serialize($resp_charset);
 606                         }
 607                         $payload = $payload . $r->payload;
 608
 609                         if ($return_payload)
 610                         {
 611                                 return $payload;
 612                         }
 613
 614                         // if we get a warning/error that has output some text before here, then we cannot
 615                         // add a new header. We cannot say we are sending xml, either...
 616                         if(!headers_sent())
 617                         {
 618                                 header('Content-Type: '.$r->content_type);
 619                                 // we do not know if client actually told us an accepted charset, but if he did
 620                                 // we have to tell him what we did
 621                                 header("Vary: Accept-Charset");
 622
 623                                 // http compression of output: only
 624                                 // if we can do it, and we want to do it, and client asked us to,
 625                                 // and php ini settings do not force it already
 626                                 $php_no_self_compress = ini_get('zlib.output_compression') == '' && (ini_get('output_handler') != 'ob_gzhandler');
 627                                 if($this->compress_response && function_exists('gzencode') && $resp_encoding != ''
 628                                         && $php_no_self_compress)
 629                                 {
 630                                         if(i18n::strpos($resp_encoding, 'gzip') !== false)
 631                                         {
 632                                                 $payload = gzencode($payload);
 633                                                 header("Content-Encoding: gzip");
 634                                                 header("Vary: Accept-Encoding");
 635                                         }
 636                                         elseif (i18n::strpos($resp_encoding, 'deflate') !== false)
 637                                         {
 638                                                 $payload = gzcompress($payload);
 639                                                 header("Content-Encoding: deflate");
 640                                                 header("Vary: Accept-Encoding");
 641                                         }
 642                                 }
 643
 644                                 // do not ouput content-length header if php is compressing output for us:
 645                                 // it will mess up measurements
 646                                 if($php_no_self_compress)
 647                                 {
 648                                         header('Content-Length: ' . (int)i18n::strlen($payload));
 649                                 }
 650                         }
 651                         else
 652                         {
 653                                 error_log('XML-RPC: xmlrpc_server::service: http headers already sent before response is fully generated. Check for php warning or error messages');
 654                         }
 655
 656                         print $payload;
 657
 658                         // return request, in case subclasses want it
 659                         return $r;
 660                 }
 661
 662                 /**
 663                 * Add a method to the dispatch map
 664                 * @param string $methodname the name with which the method will be made available
 665                 * @param string $function the php function that will get invoked
 666                 * @param array $sig the array of valid method signatures
 667                 * @param string $doc method documentation
 668                 * @access public
 669                 */
 670                 function add_to_map($methodname,$function,$sig=null,$doc='')
 671                 {
 672                         $this->dmap[$methodname] = array(
 673                                 'function'      => $function,
 674                                 'docstring' => $doc
 675                         );
 676                         if ($sig)
 677                         {
 678                                 $this->dmap[$methodname]['signature'] = $sig;
 679                         }
 680                 }
 681
 682                 /**
 683                 * Verify type and number of parameters received against a list of known signatures
 684                 * @param array $in array of either xmlrpcval objects or xmlrpc type definitions
 685                 * @param array $sig array of known signatures to match against
 686                 * @access private
 687                 */
 688                 function verifySignature($in, $sig)
 689                 {
 690                         // check each possible signature in turn
 691                         if (is_object($in))
 692                         {
 693                                 $numParams = $in->getNumParams();
 694                         }
 695                         else
 696                         {
 697                                 $numParams = count($in);
 698                         }
 699                         foreach($sig as $cursig)
 700                         {
 701                                 if(count($cursig)==$numParams+1)
 702                                 {
 703                                         $itsOK=1;
 704                                         for($n=0; $n<$numParams; $n++)
 705                                         {
 706                                                 if (is_object($in))
 707                                                 {
 708                                                         $p=$in->getParam($n);
 709                                                         if($p->kindOf() == 'scalar')
 710                                                         {
 711                                                                 $pt=$p->scalartyp();
 712                                                         }
 713                                                         else
 714                                                         {
 715                                                                 $pt=$p->kindOf();
 716                                                         }
 717                                                 }
 718                                                 else
 719                                                 {
 720                                                         $pt= $in[$n] == 'i4' ? 'int' : $in[$n]; // dispatch maps never use i4...
 721                                                 }
 722
 723                                                 // param index is $n+1, as first member of sig is return type
 724                                                 if($pt != $cursig[$n+1] && $cursig[$n+1] != $GLOBALS['xmlrpcValue'])
 725                                                 {
 726                                                         $itsOK=0;
 727                                                         $pno=$n+1;
 728                                                         $wanted=$cursig[$n+1];
 729                                                         $got=$pt;
 730                                                         break;
 731                                                 }
 732                                         }
 733                                         if($itsOK)
 734                                         {
 735                                                 return array(1,'');
 736                                         }
 737                                 }
 738                         }
 739                         if(isset($wanted))
 740                         {
 741                                 return array(0, "Wanted ${wanted}, got ${got} at param ${pno}");
 742                         }
 743                         else
 744                         {
 745                                 return array(0, "No method signature matches number of parameters");
 746                         }
 747                 }
 748
 749                 /**
 750                 * Parse http headers received along with xmlrpc request. If needed, inflate request
 751                 * @return null on success or an xmlrpcresp
 752                 * @access private
 753                 */
 754                 function parseRequestHeaders(&$data, &$req_encoding, &$resp_encoding, &$resp_compression)
 755                 {
 756                         // Play nice to PHP 4.0.x: superglobals were not yet invented...
 757                         if(!isset($_SERVER))
 758                         {
 759                                 $_SERVER = $GLOBALS['HTTP_SERVER_VARS'];
 760                         }
 761
 762                         if($this->debug > 1)
 763                         {
 764                                 if(function_exists('getallheaders'))
 765                                 {
 766                                         $this->debugmsg(''); // empty line
 767                                         foreach(getallheaders() as $name => $val)
 768                                         {
 769                                                 $this->debugmsg("HEADER: $name: $val");
 770                                         }
 771                                 }
 772
 773                         }
 774
 775                         if(isset($_SERVER['HTTP_CONTENT_ENCODING']))
 776                         {
 777                                 $content_encoding = str_replace('x-', '', $_SERVER['HTTP_CONTENT_ENCODING']);
 778                         }
 779                         else
 780                         {
 781                                 $content_encoding = '';
 782                         }
 783
 784                         // check if request body has been compressed and decompress it
 785                         if($content_encoding != '' && i18n::strlen($data))
 786                         {
 787                                 if($content_encoding == 'deflate' || $content_encoding == 'gzip')
 788                                 {
 789                                         // if decoding works, use it. else assume data wasn't gzencoded
 790                                         if(function_exists('gzinflate') && in_array($content_encoding, $this->accepted_compression))
 791                                         {
 792                                                 if($content_encoding == 'deflate' && $degzdata = @gzuncompress($data))
 793                                                 {
 794                                                         $data = $degzdata;
 795                                                         if($this->debug > 1)
 796                                                         {
 797                                                                 $this->debugmsg("\n+++INFLATED REQUEST+++[".i18n::strlen($data)." chars]+++\n" . $data . "\n+++END+++");
 798                                                         }
 799                                                 }
 800                                                 elseif($content_encoding == 'gzip' && $degzdata = @gzinflate(i18n::substr($data, 10)))
 801                                                 {
 802                                                         $data = $degzdata;
 803                                                         if($this->debug > 1)
 804                                                                 $this->debugmsg("+++INFLATED REQUEST+++[".i18n::strlen($data)." chars]+++\n" . $data . "\n+++END+++");
 805                                                 }
 806                                                 else
 807                                                 {
 808                                                         $r = new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['server_decompress_fail'], $GLOBALS['xmlrpcstr']['server_decompress_fail']);
 809                                                         return $r;
 810                                                 }
 811                                         }
 812                                         else
 813                                         {
 814                                                 //error_log('The server sent deflated data. Your php install must have the Zlib extension compiled in to support this.');
 815                                                 $r = new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['server_cannot_decompress'], $GLOBALS['xmlrpcstr']['server_cannot_decompress']);
 816                                                 return $r;
 817                                         }
 818                                 }
 819                         }
 820
 821                         // check if client specified accepted charsets, and if we know how to fulfill
 822                         // the request
 823                         if ($this->response_charset_encoding == 'auto')
 824                         {
 825                                 $resp_encoding = '';
 826                                 if (isset($_SERVER['HTTP_ACCEPT_CHARSET']))
 827                                 {
 828                                         // here we should check if we can match the client-requested encoding
 829                                         // with the encodings we know we can generate.
 830                                         /// @todo we should parse q=0.x preferences instead of getting first charset specified...
 831                                         $client_accepted_charsets = preg_split('#,#', strtoupper($_SERVER['HTTP_ACCEPT_CHARSET']));
 832                                         // Give preference to internal encoding
 833                                         $known_charsets = array($this->internal_encoding, 'UTF-8', 'ISO-8859-1', 'US-ASCII');
 834                                         foreach ($known_charsets as $charset)
 835                                         {
 836                                                 foreach ($client_accepted_charsets as $accepted)
 837                                                         if (i18n::strpos($accepted, $charset) === 0)
 838                                                         {
 839                                                                 $resp_encoding = $charset;
 840                                                                 break;
 841                                                         }
 842                                                 if ($resp_encoding)
 843                                                         break;
 844                                         }
 845                                 }
 846                         }
 847                         else
 848                         {
 849                                 $resp_encoding = $this->response_charset_encoding;
 850                         }
 851
 852                         if (isset($_SERVER['HTTP_ACCEPT_ENCODING']))
 853                         {
 854                                 $resp_compression = $_SERVER['HTTP_ACCEPT_ENCODING'];
 855                         }
 856                         else
 857                         {
 858                                 $resp_compression = '';
 859                         }
 860
 861                         // 'guestimate' request encoding
 862                         /// @todo check if mbstring is enabled and automagic input conversion is on: it might mingle with this check???
 863                         $req_encoding = guess_encoding(isset($_SERVER['CONTENT_TYPE']) ? $_SERVER['CONTENT_TYPE'] : '',
 864                                 $data);
 865
 866                         return null;
 867                 }
 868
 869                 /**
 870                 * Parse an xml chunk containing an xmlrpc request and execute the corresponding
 871                 * php function registered with the server
 872                 * @param string $data the xml request
 873                 * @param string $req_encoding (optional) the charset encoding of the xml request
 874                 * @return xmlrpcresp
 875                 * @access private
 876                 */
 877                 function parseRequest($data, $req_encoding='')
 878                 {
 879                         // 2005/05/07 commented and moved into caller function code
 880                         //if($data=='')
 881                         //{
 882                         //      $data=$GLOBALS['HTTP_RAW_POST_DATA'];
 883                         //}
 884
 885                         // G. Giunta 2005/02/13: we do NOT expect to receive html entities
 886                         // so we do not try to convert them into xml character entities
 887                         //$data = xmlrpc_html_entity_xlate($data);
 888
 889                         $GLOBALS['_xh']=array();
 890                         $GLOBALS['_xh']['ac']='';
 891                         $GLOBALS['_xh']['stack']=array();
 892                         $GLOBALS['_xh']['valuestack'] = array();
 893                         $GLOBALS['_xh']['params']=array();
 894                         $GLOBALS['_xh']['pt']=array();
 895                         $GLOBALS['_xh']['isf']=0;
 896                         $GLOBALS['_xh']['isf_reason']='';
 897                         $GLOBALS['_xh']['method']=false; // so we can check later if we got a methodname or not
 898                         $GLOBALS['_xh']['rt']='';
 899
 900                         // decompose incoming XML into request structure
 901                         if ($req_encoding != '')
 902                         {
 903                                 if (!in_array($req_encoding, array('UTF-8', 'ISO-8859-1', 'US-ASCII')))
 904                                 // the following code might be better for mb_string enabled installs, but
 905                                 // makes the lib about 200% slower...
 906                                 //if (!is_valid_charset($req_encoding, array('UTF-8', 'ISO-8859-1', 'US-ASCII')))
 907                                 {
 908                                         error_log('XML-RPC: xmlrpc_server::parseRequest: invalid charset encoding of received request: '.$req_encoding);
 909                                         $req_encoding = $GLOBALS['xmlrpc_defencoding'];
 910                                 }
 911                                 /// @BUG this will fail on PHP 5 if charset is not specified in the xml prologue,
 912                                 // the encoding is not UTF8 and there are non-ascii chars in the text...
 913                                 $parser = xml_parser_create($req_encoding);
 914                         }
 915                         else
 916                         {
 917                                 $parser = xml_parser_create();
 918                         }
 919
 920                         xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true);
 921                         // G. Giunta 2005/02/13: PHP internally uses ISO-8859-1, so we have to tell
 922                         // the xml parser to give us back data in the expected charset
 923                         xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $GLOBALS['xmlrpc_internalencoding']);
 924
 925                         if ($this->functions_parameters_type != 'xmlrpcvals')
 926                                 xml_set_element_handler($parser, 'xmlrpc_se', 'xmlrpc_ee_fast');
 927                         else
 928                                 xml_set_element_handler($parser, 'xmlrpc_se', 'xmlrpc_ee');
 929                         xml_set_character_data_handler($parser, 'xmlrpc_cd');
 930                         xml_set_default_handler($parser, 'xmlrpc_dh');
 931                         if(!xml_parse($parser, $data, 1))
 932                         {
 933                                 // return XML error as a faultCode
 934                                 $r = new xmlrpcresp(0,
 935                                 $GLOBALS['xmlrpcerrxml']+xml_get_error_code($parser),
 936                                 sprintf('XML error: %s at line %d, column %d',
 937                                         xml_error_string(xml_get_error_code($parser)),
 938                                         xml_get_current_line_number($parser), xml_get_current_column_number($parser)));
 939                                 xml_parser_free($parser);
 940                         }
 941                         elseif ($GLOBALS['_xh']['isf'])
 942                         {
 943                                 xml_parser_free($parser);
 944                                 $r = new xmlrpcresp(0,
 945                                         $GLOBALS['xmlrpcerr']['invalid_request'],
 946                                         $GLOBALS['xmlrpcstr']['invalid_request'] . ' ' . $GLOBALS['_xh']['isf_reason']);
 947                         }
 948                         else
 949                         {
 950                                 xml_parser_free($parser);
 951                                 if ($this->functions_parameters_type != 'xmlrpcvals')
 952                                 {
 953                                         if($this->debug > 1)
 954                                         {
 955                                                 $this->debugmsg("\n+++PARSED+++\n".var_export($GLOBALS['_xh']['params'], true)."\n+++END+++");
 956                                         }
 957                                         $r = $this->execute($GLOBALS['_xh']['method'], $GLOBALS['_xh']['params'], $GLOBALS['_xh']['pt']);
 958                                 }
 959                                 else
 960                                 {
 961                                         // build an xmlrpcmsg object with data parsed from xml
 962                                         $m= new xmlrpcmsg($GLOBALS['_xh']['method']);
 963                                         // now add parameters in
 964                                         for($i=0; $i<count($GLOBALS['_xh']['params']); $i++)
 965                                         {
 966                                                 $m->addParam($GLOBALS['_xh']['params'][$i]);
 967                                         }
 968
 969                                         if($this->debug > 1)
 970                                         {
 971                                                 $this->debugmsg("\n+++PARSED+++\n".var_export($m, true)."\n+++END+++");
 972                                         }
 973
 974                                         $r = $this->execute($m);
 975                                 }
 976                         }
 977                         return $r;
 978                 }
 979
 980                 /**
 981                 * Execute a method invoked by the client, checking parameters used
 982                 * @param mixed $m either an xmlrpcmsg obj or a method name
 983                 * @param array $params array with method parameters as php types (if m is method name only)
 984                 * @param array $paramtypes array with xmlrpc types of method parameters (if m is method name only)
 985                 * @return xmlrpcresp
 986                 * @access private
 987                 */
 988                 function execute($m, $params=null, $paramtypes=null)
 989                 {
 990                         if (is_object($m))
 991                         {
 992                                 $methName = $m->method();
 993                         }
 994                         else
 995                         {
 996                                 $methName = $m;
 997                         }
 998                         $sysCall = $this->allow_system_funcs && (i18n::strpos($methName, "system.") === 0);
 999                         $dmap = $sysCall ? $GLOBALS['_xmlrpcs_dmap'] : $this->dmap;
1000
1001                         if(!isset($dmap[$methName]['function']))
1002                         {
1003                                 // No such method
1004                                 return new xmlrpcresp(0,
1005                                         $GLOBALS['xmlrpcerr']['unknown_method'],
1006                                         $GLOBALS['xmlrpcstr']['unknown_method']);
1007                         }
1008
1009                         // Check signature
1010                         if(isset($dmap[$methName]['signature']))
1011                         {
1012                                 $sig = $dmap[$methName]['signature'];
1013                                 if (is_object($m))
1014                                 {
1015                                         list($ok, $errstr) = $this->verifySignature($m, $sig);
1016                                 }
1017                                 else
1018                                 {
1019                                         list($ok, $errstr) = $this->verifySignature($paramtypes, $sig);
1020                                 }
1021                                 if(!$ok)
1022                                 {
1023                                         // Didn't match.
1024                                         return new xmlrpcresp(
1025                                                 0,
1026                                                 $GLOBALS['xmlrpcerr']['incorrect_params'],
1027                                                 $GLOBALS['xmlrpcstr']['incorrect_params'] . ": ${errstr}"
1028                                         );
1029                                 }
1030                         }
1031
1032                         $func = $dmap[$methName]['function'];
1033                         // let the 'class::function' syntax be accepted in dispatch maps
1034                         if(is_string($func) && i18n::strpos($func, '::'))
1035                         {
1036                                 $func = preg_split('#::#', $func);
1037                         }
1038                         // verify that function to be invoked is in fact callable
1039                         if(!is_callable($func))
1040                         {
1041                                 error_log("XML-RPC: xmlrpc_server::execute: function $func registered as method handler is not callable");
1042                                 return new xmlrpcresp(
1043                                         0,
1044                                         $GLOBALS['xmlrpcerr']['server_error'],
1045                                         $GLOBALS['xmlrpcstr']['server_error'] . ": no function matches method"
1046                                 );
1047                         }
1048
1049                         // If debug level is 3, we should catch all errors generated during
1050                         // processing of user function, and log them as part of response
1051                         if($this->debug > 2)
1052                         {
1053                                 $GLOBALS['_xmlrpcs_prev_ehandler'] = set_error_handler('_xmlrpcs_errorHandler');
1054                         }
1055                         if (is_object($m))
1056                         {
1057                                 if($sysCall)
1058                                 {
1059                                         $r = call_user_func($func, $this, $m);
1060                                 }
1061                                 else
1062                                 {
1063                                         $r = call_user_func($func, $m);
1064                                 }
1065                                 if (!is_a($r, 'xmlrpcresp'))
1066                                 {
1067                                         error_log("XML-RPC: xmlrpc_server::execute: function $func registered as method handler does not return an xmlrpcresp object");
1068                                         if (is_a($r, 'xmlrpcval'))
1069                                         {
1070                                                 $r = new xmlrpcresp($r);
1071                                         }
1072                                         else
1073                                         {
1074                                                 $r = new xmlrpcresp(
1075                                                         0,
1076                                                         $GLOBALS['xmlrpcerr']['server_error'],
1077                                                         $GLOBALS['xmlrpcstr']['server_error'] . ": function does not return xmlrpcresp object"
1078                                                 );
1079                                         }
1080                                 }
1081                         }
1082                         else
1083                         {
1084                                 // call a 'plain php' function
1085                                 if($sysCall)
1086                                 {
1087                                         array_unshift($params, $this);
1088                                         $r = call_user_func_array($func, $params);
1089                                 }
1090                                 else
1091                                 {
1092                                         // 3rd API convention for method-handling functions: EPI-style
1093                                         if ($this->functions_parameters_type == 'epivals')
1094                                         {
1095                                                 $params = array($methName, $params, $this->user_data);
1096                                                 $r = call_user_func_array($func, $params);
1097                                                 // mimic EPI behaviour: if we get an array that looks like an error, make it
1098                                                 // an eror response
1099                                                 if (is_array($r) && array_key_exists('faultCode', $r) && array_key_exists('faultString', $r))
1100                                                 {
1101                                                         $r = new xmlrpcresp(0, (integer)$r['faultCode'], (string)$r['faultString']);
1102                                                 }
1103                                                 else
1104                                                 {
1105                                                         // functions using EPI api should NOT return resp objects,
1106                                                         // so make sure we encode the return type correctly
1107                                                         $r = new xmlrpcresp(php_xmlrpc_encode($r, array('extension_api')));
1108                                                 }
1109                                         }
1110                                         else
1111                                         {
1112                                                 $r = call_user_func_array($func, $params);
1113                                         }
1114                                 }
1115                                 // the return type can be either an xmlrpcresp object or a plain php value...
1116                                 if (!is_a($r, 'xmlrpcresp'))
1117                                 {
1118                                         // what should we assume here about automatic encoding of datetimes
1119                                         // and php classes instances???
1120                                         $r = new xmlrpcresp(php_xmlrpc_encode($r, array('auto_dates')));
1121                                 }
1122                         }
1123                         if($this->debug > 2)
1124                         {
1125                                 // note: restore the error handler we found before calling the
1126                                 // user func, even if it has been changed inside the func itself
1127                                 if($GLOBALS['_xmlrpcs_prev_ehandler'])
1128                                 {
1129                                         set_error_handler($GLOBALS['_xmlrpcs_prev_ehandler']);
1130                                 }
1131                                 else
1132                                 {
1133                                         restore_error_handler();
1134                                 }
1135                         }
1136                         return $r;
1137                 }
1138
1139                 /**
1140                 * add a string to the 'internal debug message' (separate from 'user debug message')
1141                 * @param string $strings
1142                 * @access private
1143                 */
1144                 function debugmsg($string)
1145                 {
1146                         $this->debug_info .= $string."\n";
1147                 }
1148
1149                 /**
1150                 * @access private
1151                 */
1152                 function xml_header($charset_encoding='')
1153                 {
1154                         if ($charset_encoding != '')
1155                         {
1156                                 return "<?xml version=\"1.0\" encoding=\"$charset_encoding\"?" . ">\n";
1157                         }
1158                         else
1159                         {
1160                                 return "<?xml version=\"1.0\"?" . ">\n";
1161                         }
1162                 }
1163
1164                 /**
1165                 * A debugging routine: just echoes back the input packet as a string value
1166                 * DEPRECATED!
1167                 */
1168                 function echoInput()
1169                 {
1170                         $r = new xmlrpcresp(new xmlrpcval( "'Aha said I: '" . $GLOBALS['HTTP_RAW_POST_DATA'], 'string'));
1171                         print $r->serialize();
1172                 }
1173         }
1174 ?>