<?php
 // by Edd Dumbill (C) 1999-2002
 // <edd@usefulinc.com>
 // $Id: xmlrpc.inc 17036 2008-07-17 17:00:22Z ruff $
 
 // 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.
 
    if(!function_exists('xml_parser_create'))
    {
       // For PHP 4 onward, XML functionality is always compiled-in on windows:
       // no more need to dl-open it. It might have been compiled out on *nix...
       if(strtoupper(substr(PHP_OS, 0, 3) != 'WIN'))
       {
          dl('xml.so');
       }
    }
 
    // Try to be backward compat with php < 4.2 (are we not being nice ?)
    $phpversion = phpversion();
    if($phpversion[0] == '4' && $phpversion[2] < 2)
    {
       // give an opportunity to user to specify where to include other files from
       if(!defined('PHP_XMLRPC_COMPAT_DIR'))
       {
          define('PHP_XMLRPC_COMPAT_DIR',dirname(__FILE__).'/compat/');
       }
       if($phpversion[2] == '0')
       {
          if($phpversion[4] < 6)
          {
             include(PHP_XMLRPC_COMPAT_DIR.'is_callable.php');
          }
          include(PHP_XMLRPC_COMPAT_DIR.'is_scalar.php');
          include(PHP_XMLRPC_COMPAT_DIR.'array_key_exists.php');
          include(PHP_XMLRPC_COMPAT_DIR.'version_compare.php');
       }
       include(PHP_XMLRPC_COMPAT_DIR.'var_export.php');
       include(PHP_XMLRPC_COMPAT_DIR.'is_a.php');
    }
 
    // G. Giunta 2005/01/29: declare global these variables,
    // so that xmlrpc.inc will work even if included from within a function
    // Milosch: 2005/08/07 - explicitly request these via $GLOBALS where used.
    $GLOBALS['xmlrpcI4']='i4';
    $GLOBALS['xmlrpcInt']='int';
    $GLOBALS['xmlrpcBoolean']='boolean';
    $GLOBALS['xmlrpcDouble']='double';
    $GLOBALS['xmlrpcString']='string';
    $GLOBALS['xmlrpcDateTime']='dateTime.iso8601';
    $GLOBALS['xmlrpcBase64']='base64';
    $GLOBALS['xmlrpcArray']='array';
    $GLOBALS['xmlrpcStruct']='struct';
    $GLOBALS['xmlrpcValue']='undefined';
 
    $GLOBALS['xmlrpcTypes']=array(
       $GLOBALS['xmlrpcI4']       => 1,
       $GLOBALS['xmlrpcInt']      => 1,
       $GLOBALS['xmlrpcBoolean']  => 1,
       $GLOBALS['xmlrpcString']   => 1,
       $GLOBALS['xmlrpcDouble']   => 1,
       $GLOBALS['xmlrpcDateTime'] => 1,
       $GLOBALS['xmlrpcBase64']   => 1,
       $GLOBALS['xmlrpcArray']    => 2,
       $GLOBALS['xmlrpcStruct']   => 3
    );
 
    $GLOBALS['xmlrpc_valid_parents'] = array(
       'VALUE' => array('MEMBER', 'DATA', 'PARAM', 'FAULT'),
       'BOOLEAN' => array('VALUE'),
       'I4' => array('VALUE'),
       'INT' => array('VALUE'),
       'STRING' => array('VALUE'),
       'DOUBLE' => array('VALUE'),
       'DATETIME.ISO8601' => array('VALUE'),
       'BASE64' => array('VALUE'),
       'MEMBER' => array('STRUCT'),
       'NAME' => array('MEMBER'),
       'DATA' => array('ARRAY'),
       'ARRAY' => array('VALUE'),
       'STRUCT' => array('VALUE'),
       'PARAM' => array('PARAMS'),
       'METHODNAME' => array('METHODCALL'),
       'PARAMS' => array('METHODCALL', 'METHODRESPONSE'),
       'FAULT' => array('METHODRESPONSE'),
       'NIL' => array('VALUE') // only used when extension activated
    );
 
    // define extra types for supporting NULL (useful for json or <NIL/>)
    $GLOBALS['xmlrpcNull']='null';
    $GLOBALS['xmlrpcTypes']['null']=1;
 
    // Not in use anymore since 2.0. Shall we remove it?
    /// @deprecated
    $GLOBALS['xmlEntities']=array(
       'amp'  => '&',
       'quot' => '"',
       'lt'   => '<',
       'gt'   => '>',
       'apos' => "'"
    );
 
    // tables used for transcoding different charsets into us-ascii xml
 
    $GLOBALS['xml_iso88591_Entities']=array();
    $GLOBALS['xml_iso88591_Entities']['in'] = array();
    $GLOBALS['xml_iso88591_Entities']['out'] = array();
    for ($i = 0; $i < 32; $i++)
    {
       $GLOBALS['xml_iso88591_Entities']['in'][] = chr($i);
       $GLOBALS['xml_iso88591_Entities']['out'][] = '&#'.$i.';';
    }
    for ($i = 160; $i < 256; $i++)
    {
       $GLOBALS['xml_iso88591_Entities']['in'][] = chr($i);
       $GLOBALS['xml_iso88591_Entities']['out'][] = '&#'.$i.';';
    }
 
    /// @todo add to iso table the characters from cp_1252 range, i.e. 128 to 159?
    /// These will NOT be present in true ISO-8859-1, but will save the unwary
    /// windows user from sending junk (though no luck when reciving them...)
   /*
    $GLOBALS['xml_cp1252_Entities']=array();
    for ($i = 128; $i < 160; $i++)
    {
       $GLOBALS['xml_cp1252_Entities']['in'][] = chr($i);
    }
    $GLOBALS['xml_cp1252_Entities']['out'] = array(
       '&#x20AC;', '?',        '&#x201A;', '&#x0192;',
       '&#x201E;', '&#x2026;', '&#x2020;', '&#x2021;',
       '&#x02C6;', '&#x2030;', '&#x0160;', '&#x2039;',
       '&#x0152;', '?',        '&#x017D;', '?',
       '?',        '&#x2018;', '&#x2019;', '&#x201C;',
       '&#x201D;', '&#x2022;', '&#x2013;', '&#x2014;',
       '&#x02DC;', '&#x2122;', '&#x0161;', '&#x203A;',
       '&#x0153;', '?',        '&#x017E;', '&#x0178;'
    );
   */
 
    $GLOBALS['xmlrpcerr'] = array(
    'unknown_method'=>1,
    'invalid_return'=>2,
    'incorrect_params'=>3,
    'introspect_unknown'=>4,
    'http_error'=>5,
    'no_data'=>6,
    'no_ssl'=>7,
    'curl_fail'=>8,
    'invalid_request'=>15,
    'no_curl'=>16,
    'server_error'=>17,
    'multicall_error'=>18,
    'multicall_notstruct'=>9,
    'multicall_nomethod'=>10,
    'multicall_notstring'=>11,
    'multicall_recursion'=>12,
    'multicall_noparams'=>13,
    'multicall_notarray'=>14,
 
    'cannot_decompress'=>103,
    'decompress_fail'=>104,
    'dechunk_fail'=>105,
    'server_cannot_decompress'=>106,
    'server_decompress_fail'=>107
    );
 
    $GLOBALS['xmlrpcstr'] = array(
    'unknown_method'=>'Unknown method',
    'invalid_return'=>'Invalid return payload: enable debugging to examine incoming payload',
    'incorrect_params'=>'Incorrect parameters passed to method',
    'introspect_unknown'=>"Can't introspect: method unknown",
    'http_error'=>"Didn't receive 200 OK from remote server.",
    'no_data'=>'No data received from server.',
    'no_ssl'=>'No SSL support compiled in.',
    'curl_fail'=>'CURL error',
    'invalid_request'=>'Invalid request payload',
    'no_curl'=>'No CURL support compiled in.',
    'server_error'=>'Internal server error',
    'multicall_error'=>'Received from server invalid multicall response',
    'multicall_notstruct'=>'system.multicall expected struct',
    'multicall_nomethod'=>'missing methodName',
    'multicall_notstring'=>'methodName is not a string',
    'multicall_recursion'=>'recursive system.multicall forbidden',
    'multicall_noparams'=>'missing params',
    'multicall_notarray'=>'params is not an array',
 
    'cannot_decompress'=>'Received from server compressed HTTP and cannot decompress',
    'decompress_fail'=>'Received from server invalid compressed HTTP',
    'dechunk_fail'=>'Received from server invalid chunked HTTP',
    'server_cannot_decompress'=>'Received from client compressed HTTP request and cannot decompress',
    'server_decompress_fail'=>'Received from client invalid compressed HTTP request'
    );
 
    // The charset encoding used by the server for received messages and
    // by the client for received responses when received charset cannot be determined
    // or is not supported
    $GLOBALS['xmlrpc_defencoding']='UTF-8';
 
    // The encoding used internally by PHP.
    // String values received as xml will be converted to this, and php strings will be converted to xml
    // as if having been coded with this
    $GLOBALS['xmlrpc_internalencoding']='ISO-8859-1';
 
    $GLOBALS['xmlrpcName']='XML-RPC for PHP';
    $GLOBALS['xmlrpcVersion']='2.2.1';
 
    // let user errors start at 800
    $GLOBALS['xmlrpcerruser']=800;
    // let XML parse errors start at 100
    $GLOBALS['xmlrpcerrxml']=100;
 
    // formulate backslashes for escaping regexp
    // Not in use anymore since 2.0. Shall we remove it?
    /// @deprecated
    $GLOBALS['xmlrpc_backslash']=chr(92).chr(92);
 
    // set to TRUE to enable correct decoding of <NIL/> values
    $GLOBALS['xmlrpc_null_extension']=false;
 
    // used to store state during parsing
    // quick explanation of components:
    //   ac - used to accumulate values
    //   isf - used to indicate a parsing fault (2) or xmlrpcresp fault (1)
    //   isf_reason - used for storing xmlrpcresp fault string
    //   lv - used to indicate "looking for a value": implements
    //        the logic to allow values with no types to be strings
    //   params - used to store parameters in method calls
    //   method - used to store method name
    //   stack - array with genealogy of xml elements names:
    //           used to validate nesting of xmlrpc elements
    $GLOBALS['_xh']=null;
 
    /**
    * Convert a string to the correct XML representation in a target charset
    * To help correct communication of non-ascii chars inside strings, regardless
    * of the charset used when sending requests, parsing them, sending responses
    * and parsing responses, an option is to convert all non-ascii chars present in the message
    * into their equivalent 'charset entity'. Charset entities enumerated this way
    * are independent of the charset encoding used to transmit them, and all XML
    * parsers are bound to understand them.
    * Note that in the std case we are not sending a charset encoding mime type
    * along with http headers, so we are bound by RFC 3023 to emit strict us-ascii.
    *
    * @todo do a bit of basic benchmarking (strtr vs. str_replace)
    * @todo  make usage of iconv() or recode_string() or mb_string() where available
    */
    function xmlrpc_encode_entitites($data, $src_encoding='', $dest_encoding='')
    {
       if ($src_encoding == '')
       {
          // lame, but we know no better...
          $src_encoding = $GLOBALS['xmlrpc_internalencoding'];
       }
 
       switch(strtoupper($src_encoding.'_'.$dest_encoding))
       {
          case 'ISO-8859-1_':
          case 'ISO-8859-1_US-ASCII':
             $escaped_data = str_replace(array('&', '"', "'", '<', '>'), array('&amp;', '&quot;', '&apos;', '&lt;', '&gt;'), $data);
             $escaped_data = str_replace($GLOBALS['xml_iso88591_Entities']['in'], $GLOBALS['xml_iso88591_Entities']['out'], $escaped_data);
             break;
          case 'ISO-8859-1_UTF-8':
             $escaped_data = str_replace(array('&', '"', "'", '<', '>'), array('&amp;', '&quot;', '&apos;', '&lt;', '&gt;'), $data);
             $escaped_data = utf8_encode($escaped_data);
             break;
          case 'ISO-8859-1_ISO-8859-1':
          case 'US-ASCII_US-ASCII':
          case 'US-ASCII_UTF-8':
          case 'US-ASCII_':
          case 'US-ASCII_ISO-8859-1':
          case 'UTF-8_UTF-8':
          //case 'CP1252_CP1252':
             $escaped_data = str_replace(array('&', '"', "'", '<', '>'), array('&amp;', '&quot;', '&apos;', '&lt;', '&gt;'), $data);
             break;
          case 'UTF-8_':
          case 'UTF-8_US-ASCII':
          case 'UTF-8_ISO-8859-1':
    // NB: this will choke on invalid UTF-8, going most likely beyond EOF
    $escaped_data = '';
    // be kind to users creating string xmlrpcvals out of different php types
    $data = (string) $data;
    $ns = strlen ($data);
    for ($nn = 0; $nn < $ns; $nn++)
    {
       $ch = $data[$nn];
       $ii = ord($ch);
       //1 7 0bbbbbbb (127)
       if ($ii < 128)
       {
          /// @todo shall we replace this with a (supposedly) faster str_replace?
          switch($ii){
             case 34:
                $escaped_data .= '&quot;';
                break;
             case 38:
                $escaped_data .= '&amp;';
                break;
             case 39:
                $escaped_data .= '&apos;';
                break;
             case 60:
                $escaped_data .= '&lt;';
                break;
             case 62:
                $escaped_data .= '&gt;';
                break;
             default:
                $escaped_data .= $ch;
          } // switch
       }
       //2 11 110bbbbb 10bbbbbb (2047)
       else if ($ii>>5 == 6)
       {
          $b1 = ($ii & 31);
          $ii = ord($data[$nn+1]);
          $b2 = ($ii & 63);
          $ii = ($b1 * 64) + $b2;
          $ent = sprintf ('&#%d;', $ii);
          $escaped_data .= $ent;
          $nn += 1;
       }
       //3 16 1110bbbb 10bbbbbb 10bbbbbb
       else if ($ii>>4 == 14)
       {
          $b1 = ($ii & 31);
          $ii = ord($data[$nn+1]);
          $b2 = ($ii & 63);
          $ii = ord($data[$nn+2]);
          $b3 = ($ii & 63);
          $ii = ((($b1 * 64) + $b2) * 64) + $b3;
          $ent = sprintf ('&#%d;', $ii);
          $escaped_data .= $ent;
          $nn += 2;
       }
       //4 21 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
       else if ($ii>>3 == 30)
       {
          $b1 = ($ii & 31);
          $ii = ord($data[$nn+1]);
          $b2 = ($ii & 63);
          $ii = ord($data[$nn+2]);
          $b3 = ($ii & 63);
          $ii = ord($data[$nn+3]);
          $b4 = ($ii & 63);
          $ii = ((((($b1 * 64) + $b2) * 64) + $b3) * 64) + $b4;
          $ent = sprintf ('&#%d;', $ii);
          $escaped_data .= $ent;
          $nn += 3;
       }
    }
             break;
 /*
          case 'CP1252_':
          case 'CP1252_US-ASCII':
             $escaped_data = str_replace(array('&', '"', "'", '<', '>'), array('&amp;', '&quot;', '&apos;', '&lt;', '&gt;'), $data);
             $escaped_data = str_replace($GLOBALS['xml_iso88591_Entities']['in'], $GLOBALS['xml_iso88591_Entities']['out'], $escaped_data);
             $escaped_data = str_replace($GLOBALS['xml_cp1252_Entities']['in'], $GLOBALS['xml_cp1252_Entities']['out'], $escaped_data);
             break;
          case 'CP1252_UTF-8':
             $escaped_data = str_replace(array('&', '"', "'", '<', '>'), array('&amp;', '&quot;', '&apos;', '&lt;', '&gt;'), $data);
             /// @todo we could use real UTF8 chars here instead of xml entities... (note that utf_8 encode all allone will NOT convert them)
             $escaped_data = str_replace($GLOBALS['xml_cp1252_Entities']['in'], $GLOBALS['xml_cp1252_Entities']['out'], $escaped_data);
             $escaped_data = utf8_encode($escaped_data);
             break;
          case 'CP1252_ISO-8859-1':
             $escaped_data = str_replace(array('&', '"', "'", '<', '>'), array('&amp;', '&quot;', '&apos;', '&lt;', '&gt;'), $data);
             // we might as well replave all funky chars with a '?' here, but we are kind and leave it to the receiving application layer to decide what to do with these weird entities...
             $escaped_data = str_replace($GLOBALS['xml_cp1252_Entities']['in'], $GLOBALS['xml_cp1252_Entities']['out'], $escaped_data);
             break;
 */
          default:
             $escaped_data = '';
             error_log("Converting from $src_encoding to $dest_encoding: not supported...");
       }
       return $escaped_data;
    }
 
    /// xml parser handler function for opening element tags
    function xmlrpc_se($parser, $name, $attrs, $accept_single_vals=false)
    {
       // if invalid xmlrpc already detected, skip all processing
       if ($GLOBALS['_xh']['isf'] < 2)
       {
          // check for correct element nesting
          // top level element can only be of 2 types
          /// @todo optimization creep: save this check into a bool variable, instead of using count() every time:
          ///       there is only a single top level element in xml anyway
          if (count($GLOBALS['_xh']['stack']) == 0)
          {
             if ($name != 'METHODRESPONSE' && $name != 'METHODCALL' && (
                $name != 'VALUE' && !$accept_single_vals))
             {
                $GLOBALS['_xh']['isf'] = 2;
                $GLOBALS['_xh']['isf_reason'] = 'missing top level xmlrpc element';
                return;
             }
             else
             {
                $GLOBALS['_xh']['rt'] = strtolower($name);
             }
          }
          else
          {
             // not top level element: see if parent is OK
             $parent = end($GLOBALS['_xh']['stack']);
             if (!array_key_exists($name, $GLOBALS['xmlrpc_valid_parents']) || !in_array($parent, $GLOBALS['xmlrpc_valid_parents'][$name]))
             {
                $GLOBALS['_xh']['isf'] = 2;
                $GLOBALS['_xh']['isf_reason'] = "xmlrpc element $name cannot be child of $parent";
                return;
             }
          }
 
          switch($name)
          {
             // optimize for speed switch cases: most common cases first
             case 'VALUE':
                /// @todo we could check for 2 VALUE elements inside a MEMBER or PARAM element
                $GLOBALS['_xh']['vt']='value'; // indicator: no value found yet
                $GLOBALS['_xh']['ac']='';
                $GLOBALS['_xh']['lv']=1;
                $GLOBALS['_xh']['php_class']=null;
                break;
             case 'I4':
             case 'INT':
             case 'STRING':
             case 'BOOLEAN':
             case 'DOUBLE':
             case 'DATETIME.ISO8601':
             case 'BASE64':
                if ($GLOBALS['_xh']['vt']!='value')
                {
                   //two data elements inside a value: an error occurred!
                   $GLOBALS['_xh']['isf'] = 2;
                   $GLOBALS['_xh']['isf_reason'] = "$name element following a {$GLOBALS['_xh']['vt']} element inside a single value";
                   return;
                }
                $GLOBALS['_xh']['ac']=''; // reset the accumulator
                break;
             case 'STRUCT':
             case 'ARRAY':
                if ($GLOBALS['_xh']['vt']!='value')
                {
                   //two data elements inside a value: an error occurred!
                   $GLOBALS['_xh']['isf'] = 2;
                   $GLOBALS['_xh']['isf_reason'] = "$name element following a {$GLOBALS['_xh']['vt']} element inside a single value";
                   return;
                }
                // create an empty array to hold child values, and push it onto appropriate stack
                $cur_val = array();
                $cur_val['values'] = array();
                $cur_val['type'] = $name;
                // check for out-of-band information to rebuild php objs
                // and in case it is found, save it
                if (@isset($attrs['PHP_CLASS']))
                {
                   $cur_val['php_class'] = $attrs['PHP_CLASS'];
                }
                $GLOBALS['_xh']['valuestack'][] = $cur_val;
                $GLOBALS['_xh']['vt']='data'; // be prepared for a data element next
                break;
             case 'DATA':
                if ($GLOBALS['_xh']['vt']!='data')
                {
                   //two data elements inside a value: an error occurred!
                   $GLOBALS['_xh']['isf'] = 2;
                   $GLOBALS['_xh']['isf_reason'] = "found two data elements inside an array element";
                   return;
                }
             case 'METHODCALL':
             case 'METHODRESPONSE':
             case 'PARAMS':
                // valid elements that add little to processing
                break;
             case 'METHODNAME':
             case 'NAME':
                /// @todo we could check for 2 NAME elements inside a MEMBER element
                $GLOBALS['_xh']['ac']='';
                break;
             case 'FAULT':
                $GLOBALS['_xh']['isf']=1;
                break;
             case 'MEMBER':
                $GLOBALS['_xh']['valuestack'][count($GLOBALS['_xh']['valuestack'])-1]['name']=''; // set member name to null, in case we do not find in the xml later on
                //$GLOBALS['_xh']['ac']='';
                // Drop trough intentionally
             case 'PARAM':
                // clear value type, so we can check later if no value has been passed for this param/member
                $GLOBALS['_xh']['vt']=null;
                break;
             case 'NIL':
                if ($GLOBALS['xmlrpc_null_extension'])
                {
                   if ($GLOBALS['_xh']['vt']!='value')
                   {
                      //two data elements inside a value: an error occurred!
                      $GLOBALS['_xh']['isf'] = 2;
                      $GLOBALS['_xh']['isf_reason'] = "$name element following a {$GLOBALS['_xh']['vt']} element inside a single value";
                      return;
                   }
                   $GLOBALS['_xh']['ac']=''; // reset the accumulator
                   break;
                }
                // we do not support the <NIL/> extension, so
                // drop through intentionally
             default:
                /// INVALID ELEMENT: RAISE ISF so that it is later recognized!!!
                $GLOBALS['_xh']['isf'] = 2;
                $GLOBALS['_xh']['isf_reason'] = "found not-xmlrpc xml element $name";
                break;
          }
 
          // Save current element name to stack, to validate nesting
          $GLOBALS['_xh']['stack'][] = $name;
 
          /// @todo optimization creep: move this inside the big switch() above
          if($name!='VALUE')
          {
             $GLOBALS['_xh']['lv']=0;
          }
       }
    }
 
    /// Used in decoding xml chunks that might represent single xmlrpc values
    function xmlrpc_se_any($parser, $name, $attrs)
    {
       xmlrpc_se($parser, $name, $attrs, true);
    }
 
    /// xml parser handler function for close element tags
    function xmlrpc_ee($parser, $name, $rebuild_xmlrpcvals = true)
    {
       if ($GLOBALS['_xh']['isf'] < 2)
       {
          // push this element name from stack
          // NB: if XML validates, correct opening/closing is guaranteed and
          // we do not have to check for $name == $curr_elem.
          // we also checked for proper nesting at start of elements...
          $curr_elem = array_pop($GLOBALS['_xh']['stack']);
 
          switch($name)
          {
             case 'VALUE':
                // This if() detects if no scalar was inside <VALUE></VALUE>
                if ($GLOBALS['_xh']['vt']=='value')
                {
                   $GLOBALS['_xh']['value']=$GLOBALS['_xh']['ac'];
                   $GLOBALS['_xh']['vt']=$GLOBALS['xmlrpcString'];
                }
 
                if ($rebuild_xmlrpcvals)
                {
                   // build the xmlrpc val out of the data received, and substitute it
                   $temp =& new xmlrpcval($GLOBALS['_xh']['value'], $GLOBALS['_xh']['vt']);
                   // in case we got info about underlying php class, save it
                   // in the object we're rebuilding
                   if (isset($GLOBALS['_xh']['php_class']))
                      $temp->_php_class = $GLOBALS['_xh']['php_class'];
                   // check if we are inside an array or struct:
                   // if value just built is inside an array, let's move it into array on the stack
                   $vscount = count($GLOBALS['_xh']['valuestack']);
                   if ($vscount && $GLOBALS['_xh']['valuestack'][$vscount-1]['type']=='ARRAY')
                   {
                      $GLOBALS['_xh']['valuestack'][$vscount-1]['values'][] = $temp;
                   }
                   else
                   {
                      $GLOBALS['_xh']['value'] = $temp;
                   }
                }
                else
                {
                   /// @todo this needs to treat correctly php-serialized objects,
                   /// since std deserializing is done by php_xmlrpc_decode,
                   /// which we will not be calling...
                   if (isset($GLOBALS['_xh']['php_class']))
                   {
                   }
 
                   // check if we are inside an array or struct:
                   // if value just built is inside an array, let's move it into array on the stack
                   $vscount = count($GLOBALS['_xh']['valuestack']);
                   if ($vscount && $GLOBALS['_xh']['valuestack'][$vscount-1]['type']=='ARRAY')
                   {
                      $GLOBALS['_xh']['valuestack'][$vscount-1]['values'][] = $GLOBALS['_xh']['value'];
                   }
                }
                break;
             case 'BOOLEAN':
             case 'I4':
             case 'INT':
             case 'STRING':
             case 'DOUBLE':
             case 'DATETIME.ISO8601':
             case 'BASE64':
                $GLOBALS['_xh']['vt']=strtolower($name);
                /// @todo: optimization creep - remove the if/elseif cycle below
                /// since the case() in which we are already did that
                if ($name=='STRING')
                {
                   $GLOBALS['_xh']['value']=$GLOBALS['_xh']['ac'];
                }
                elseif ($name=='DATETIME.ISO8601')
                {
                   if (!preg_match('/^[0-9]{8}T[0-9]{2}:[0-9]{2}:[0-9]{2}$/', $GLOBALS['_xh']['ac']))
                   {
                      error_log('XML-RPC: invalid value received in DATETIME: '.$GLOBALS['_xh']['ac']);
                   }
                   $GLOBALS['_xh']['vt']=$GLOBALS['xmlrpcDateTime'];
                   $GLOBALS['_xh']['value']=$GLOBALS['_xh']['ac'];
                }
                elseif ($name=='BASE64')
                {
                   /// @todo check for failure of base64 decoding / catch warnings
                   $GLOBALS['_xh']['value']=base64_decode($GLOBALS['_xh']['ac']);
                }
                elseif ($name=='BOOLEAN')
                {
                   // special case here: we translate boolean 1 or 0 into PHP
                   // constants true or false.
                   // Strings 'true' and 'false' are accepted, even though the
                   // spec never mentions them (see eg. Blogger api docs)
                   // NB: this simple checks helps a lot sanitizing input, ie no
                   // security problems around here
                   if ($GLOBALS['_xh']['ac']=='1' || strcasecmp($GLOBALS['_xh']['ac'], 'true') == 0)
                   {
                      $GLOBALS['_xh']['value']=true;
                   }
                   else
                   {
                      // log if receiveing something strange, even though we set the value to false anyway
                      if ($GLOBALS['_xh']['ac']!='0' && strcasecmp($_xh[$parser]['ac'], 'false') != 0)
                         error_log('XML-RPC: invalid value received in BOOLEAN: '.$GLOBALS['_xh']['ac']);
                      $GLOBALS['_xh']['value']=false;
                   }
                }
                elseif ($name=='DOUBLE')
                {
                   // we have a DOUBLE
                   // we must check that only 0123456789-.<space> are characters here
                   // NOTE: regexp could be much stricter than this...
                   if (!preg_match('/^[+-eE0123456789 \t.]+$/', $GLOBALS['_xh']['ac']))
                   {
                      /// @todo: find a better way of throwing an error than this!
                      error_log('XML-RPC: non numeric value received in DOUBLE: '.$GLOBALS['_xh']['ac']);
                      $GLOBALS['_xh']['value']='ERROR_NON_NUMERIC_FOUND';
                   }
                   else
                   {
                      // it's ok, add it on
                      $GLOBALS['_xh']['value']=(double)$GLOBALS['_xh']['ac'];
                   }
                }
                else
                {
                   // we have an I4/INT
                   // we must check that only 0123456789-<space> are characters here
                   if (!preg_match('/^[+-]?[0123456789 \t]+$/', $GLOBALS['_xh']['ac']))
                   {
                      /// @todo find a better way of throwing an error than this!
                      error_log('XML-RPC: non numeric value received in INT: '.$GLOBALS['_xh']['ac']);
                      $GLOBALS['_xh']['value']='ERROR_NON_NUMERIC_FOUND';
                   }
                   else
                   {
                      // it's ok, add it on
                      $GLOBALS['_xh']['value']=(int)$GLOBALS['_xh']['ac'];
                   }
                }
                //$GLOBALS['_xh']['ac']=''; // is this necessary?
                $GLOBALS['_xh']['lv']=3; // indicate we've found a value
                break;
             case 'NAME':
                $GLOBALS['_xh']['valuestack'][count($GLOBALS['_xh']['valuestack'])-1]['name'] = $GLOBALS['_xh']['ac'];
                break;
             case 'MEMBER':
                //$GLOBALS['_xh']['ac']=''; // is this necessary?
                // add to array in the stack the last element built,
                // unless no VALUE was found
                if ($GLOBALS['_xh']['vt'])
                {
                   $vscount = count($GLOBALS['_xh']['valuestack']);
                   $GLOBALS['_xh']['valuestack'][$vscount-1]['values'][$GLOBALS['_xh']['valuestack'][$vscount-1]['name']] = $GLOBALS['_xh']['value'];
                } else
                   error_log('XML-RPC: missing VALUE inside STRUCT in received xml');
                break;
             case 'DATA':
                //$GLOBALS['_xh']['ac']=''; // is this necessary?
                $GLOBALS['_xh']['vt']=null; // reset this to check for 2 data elements in a row - even if they're empty
                break;
             case 'STRUCT':
             case 'ARRAY':
                // fetch out of stack array of values, and promote it to current value
                $curr_val = array_pop($GLOBALS['_xh']['valuestack']);
                $GLOBALS['_xh']['value'] = $curr_val['values'];
                $GLOBALS['_xh']['vt']=strtolower($name);
                if (isset($curr_val['php_class']))
                {
                   $GLOBALS['_xh']['php_class'] = $curr_val['php_class'];
                }
                break;
             case 'PARAM':
                // add to array of params the current value,
                // unless no VALUE was found
                if ($GLOBALS['_xh']['vt'])
                {
                   $GLOBALS['_xh']['params'][]=$GLOBALS['_xh']['value'];
                   $GLOBALS['_xh']['pt'][]=$GLOBALS['_xh']['vt'];
                }
                else
                   error_log('XML-RPC: missing VALUE inside PARAM in received xml');
                break;
             case 'METHODNAME':
                $GLOBALS['_xh']['method']=preg_replace('/^[\n\r\t ]+/', '', $GLOBALS['_xh']['ac']);
                break;
             case 'NIL':
                if ($GLOBALS['xmlrpc_null_extension'])
                {
                   $GLOBALS['_xh']['vt']='null';
                   $GLOBALS['_xh']['value']=null;
                   $GLOBALS['_xh']['lv']=3;
                   break;
                }
                // drop through intentionally if nil extension not enabled
             case 'PARAMS':
             case 'FAULT':
             case 'METHODCALL':
             case 'METHORESPONSE':
                break;
             default:
                // End of INVALID ELEMENT!
                // shall we add an assert here for unreachable code???
                break;
          }
       }
    }
 
    /// Used in decoding xmlrpc requests/responses without rebuilding xmlrpc values
    function xmlrpc_ee_fast($parser, $name)
    {
       xmlrpc_ee($parser, $name, false);
    }
 
    /// xml parser handler function for character data
    function xmlrpc_cd($parser, $data)
    {
       // skip processing if xml fault already detected
       if ($GLOBALS['_xh']['isf'] < 2)
       {
          // "lookforvalue==3" means that we've found an entire value
          // and should discard any further character data
          if($GLOBALS['_xh']['lv']!=3)
          {
             // G. Giunta 2006-08-23: useless change of 'lv' from 1 to 2
             //if($GLOBALS['_xh']['lv']==1)
             //{
                // if we've found text and we're just in a <value> then
                // say we've found a value
                //$GLOBALS['_xh']['lv']=2;
             //}
             // we always initialize the accumulator before starting parsing, anyway...
             //if(!@isset($GLOBALS['_xh']['ac']))
             //{
             // $GLOBALS['_xh']['ac'] = '';
             //}
             $GLOBALS['_xh']['ac'].=$data;
          }
       }
    }
 
    /// xml parser handler function for 'other stuff', ie. not char data or
    /// element start/end tag. In fact it only gets called on unknown entities...
    function xmlrpc_dh($parser, $data)
    {
       // skip processing if xml fault already detected
       if ($GLOBALS['_xh']['isf'] < 2)
       {
          if(substr($data, 0, 1) == '&' && substr($data, -1, 1) == ';')
          {
             // G. Giunta 2006-08-25: useless change of 'lv' from 1 to 2
             //if($GLOBALS['_xh']['lv']==1)
             //{
             // $GLOBALS['_xh']['lv']=2;
             //}
             $GLOBALS['_xh']['ac'].=$data;
          }
       }
       return true;
    }
 
    class xmlrpc_client
    {
       var $path;
       var $server;
       var $port=0;
       var $method='http';
       var $errno;
       var $errstr;
       var $debug=0;
       var $username='';
       var $password='';
       var $authtype=1;
       var $cert='';
       var $certpass='';
       var $cacert='';
       var $cacertdir='';
       var $key='';
       var $keypass='';
       var $verifypeer=true;
       var $verifyhost=1;
       var $no_multicall=false;
       var $proxy='';
       var $proxyport=0;
       var $proxy_user='';
       var $proxy_pass='';
       var $proxy_authtype=1;
       var $cookies=array();
       /**
       * List of http compression methods accepted by the client for responses.
       * NB: PHP supports deflate, gzip compressions out of the box if compiled w. zlib
       *
       * NNB: you can set it to any non-empty array for HTTP11 and HTTPS, since
       * in those cases it will be up to CURL to decide the compression methods
       * it supports. You might check for the presence of 'zlib' in the output of
       * curl_version() to determine wheter compression is supported or not
       */
       var $accepted_compression = array();
       /**
       * Name of compression scheme to be used for sending requests.
       * Either null, gzip or deflate
       */
       var $request_compression = '';
       /**
       * CURL handle: used for keep-alive connections (PHP 4.3.8 up, see:
       * http://curl.haxx.se/docs/faq.html#7.3)
       */
       var $xmlrpc_curl_handle = null;
       /// Wheter to use persistent connections for http 1.1 and https
       var $keepalive = false;
       /// Charset encodings that can be decoded without problems by the client
       var $accepted_charset_encodings = array();
       /// Charset encoding to be used in serializing request. NULL = use ASCII
       var $request_charset_encoding = '';
       /**
       * Decides the content of xmlrpcresp objects returned by calls to send()
       * valid strings are 'xmlrpcvals', 'phpvals' or 'xml'
       */
       var $return_type = 'xmlrpcvals';
 
       /**
       * @param string $path either the complete server URL or the PATH part of the xmlrc server URL, e.g. /xmlrpc/server.php
       * @param string $server the server name / ip address
       * @param integer $port the port the server is listening on, defaults to 80 or 443 depending on protocol used
       * @param string $method the http protocol variant: defaults to 'http', 'https' and 'http11' can be used if CURL is installed
       */
       function xmlrpc_client($path, $server='', $port='', $method='')
       {
          // allow user to specify all params in $path
          if($server == '' and $port == '' and $method == '')
          {
             $parts = parse_url($path);
             $server = $parts['host'];
             $path = isset($parts['path']) ? $parts['path'] : '';
             if(isset($parts['query']))
             {
                $path .= '?'.$parts['query'];
             }
             if(isset($parts['fragment']))
             {
                $path .= '#'.$parts['fragment'];
             }
             if(isset($parts['port']))
             {
                $port = $parts['port'];
             }
             if(isset($parts['scheme']))
             {
                $method = $parts['scheme'];
             }
             if(isset($parts['user']))
             {
                $this->username = $parts['user'];
             }
             if(isset($parts['pass']))
             {
                $this->password = $parts['pass'];
             }
          }
          if($path == '' || $path[0] != '/')
          {
             $this->path='/'.$path;
          }
          else
          {
             $this->path=$path;
          }
          $this->server=$server;
          if($port != '')
          {
             $this->port=$port;
          }
          if($method != '')
          {
             $this->method=$method;
          }
 
          // if ZLIB is enabled, let the client by default accept compressed responses
          if(function_exists('gzinflate') || (
             function_exists('curl_init') && (($info = curl_version()) &&
             ((is_string($info) && strpos($info, 'zlib') !== null) || isset($info['libz_version'])))
          ))
          {
             $this->accepted_compression = array('gzip', 'deflate');
          }
 
          // keepalives: enabled by default ONLY for PHP >= 4.3.8
          // (see http://curl.haxx.se/docs/faq.html#7.3)
          if(version_compare(phpversion(), '4.3.8') >= 0)
          {
             $this->keepalive = true;
          }
 
          // by default the xml parser can support these 3 charset encodings
          $this->accepted_charset_encodings = array('UTF-8', 'ISO-8859-1', 'US-ASCII');
       }
 
       /**
       * Enables/disables the echoing to screen of the xmlrpc responses received
       * @param integer $debug values 0, 1 and 2 are supported (2 = echo sent msg too, before received response)
       * @access public
       */
       function setDebug($in)
       {
          $this->debug=$in;
       }
 
       /**
       * Add some http BASIC AUTH credentials, used by the client to authenticate
       * @param string $u username
       * @param string $p password
       * @param integer $t auth type. See curl_setopt man page for supported auth types. Defaults to CURLAUTH_BASIC (basic auth)
       * @access public
       */
       function setCredentials($u, $p, $t=1)
       {
          $this->username=$u;
          $this->password=$p;
          $this->authtype=$t;
       }
 
       /**
       * Add a client-side https certificate
       * @param string $cert
       * @param string $certpass
       * @access public
       */
       function setCertificate($cert, $certpass)
       {
          $this->cert = $cert;
          $this->certpass = $certpass;
       }
 
       /**
       * Add a CA certificate to verify server with (see man page about
       * CURLOPT_CAINFO for more details
       * @param string $cacert certificate file name (or dir holding certificates)
       * @param bool $is_dir set to true to indicate cacert is a dir. defaults to false
       * @access public
       */
       function setCaCertificate($cacert, $is_dir=false)
       {
          if ($is_dir)
          {
             $this->cacertdir = $cacert;
          }
          else
          {
             $this->cacert = $cacert;
          }
       }
 
       /**
       * Set attributes for SSL communication: private SSL key
       * NB: does not work in older php/curl installs
       * Thanks to Daniel Convissor
       * @param string $key The name of a file containing a private SSL key
       * @param string $keypass The secret password needed to use the private SSL key
       * @access public
       */
       function setKey($key, $keypass)
       {
          $this->key = $key;
          $this->keypass = $keypass;
       }
 
       /**
       * Set attributes for SSL communication: verify server certificate
       * @param bool $i enable/disable verification of peer certificate
       * @access public
       */
       function setSSLVerifyPeer($i)
       {
          $this->verifypeer = $i;
       }
 
       /**
       * Set attributes for SSL communication: verify match of server cert w. hostname
       * @param int $i
       * @access public
       */
       function setSSLVerifyHost($i)
       {
          $this->verifyhost = $i;
       }
 
       /**
       * Set proxy info
       * @param string $proxyhost
       * @param string $proxyport Defaults to 8080 for HTTP and 443 for HTTPS
       * @param string $proxyusername Leave blank if proxy has public access
       * @param string $proxypassword Leave blank if proxy has public access
       * @param int $proxyauthtype set to constant CURLAUTH_NTLM to use NTLM auth with proxy
       * @access public
       */
       function setProxy($proxyhost, $proxyport, $proxyusername = '', $proxypassword = '', $proxyauthtype = 1)
       {
          $this->proxy = $proxyhost;
          $this->proxyport = $proxyport;
          $this->proxy_user = $proxyusername;
          $this->proxy_pass = $proxypassword;
          $this->proxy_authtype = $proxyauthtype;
       }
 
       /**
       * Enables/disables reception of compressed xmlrpc responses.
       * Note that enabling reception of compressed responses merely adds some standard
       * http headers to xmlrpc requests. It is up to the xmlrpc server to return
       * compressed responses when receiving such requests.
       * @param string $compmethod either 'gzip', 'deflate', 'any' or ''
       * @access public
       */
       function setAcceptedCompression($compmethod)
       {
          if ($compmethod == 'any')
             $this->accepted_compression = array('gzip', 'deflate');
          else
             $this->accepted_compression = array($compmethod);
       }
 
       /**
       * Enables/disables http compression of xmlrpc request.
       * Take care when sending compressed requests: servers might not support them
       * (and automatic fallback to uncompressed requests is not yet implemented)
       * @param string $compmethod either 'gzip', 'deflate' or ''
       * @access public
       */
       function setRequestCompression($compmethod)
       {
          $this->request_compression = $compmethod;
       }
 
       /**
       * Adds a cookie to list of cookies that will be sent to server.
       * NB: setting any param but name and value will turn the cookie into a 'version 1' cookie:
       * do not do it unless you know what you are doing
       * @param string $name
       * @param string $value
       * @param string $path
       * @param string $domain
       * @param int $port
       * @access public
       *
       * @todo check correctness of urlencoding cookie value (copied from php way of doing it...)
       */
       function setCookie($name, $value='', $path='', $domain='', $port=null)
       {
          $this->cookies[$name]['value'] = urlencode($value);
          if ($path || $domain || $port)
          {
             $this->cookies[$name]['path'] = $path;
             $this->cookies[$name]['domain'] = $domain;
             $this->cookies[$name]['port'] = $port;
             $this->cookies[$name]['version'] = 1;
          }
          else
          {
             $this->cookies[$name]['version'] = 0;
          }
       }
 
       /**
       * Send an xmlrpc request
       * @param mixed $msg The message object, or an array of messages for using multicall, or the complete xml representation of a request
       * @param integer $timeout Connection timeout, in seconds, If unspecified, a platform specific timeout will apply
       * @param string $method if left unspecified, the http protocol chosen during creation of the object will be used
       * @return xmlrpcresp
       * @access public
       */
       function& send($msg, $timeout=0, $method='')
       {
          // if user deos not specify http protocol, use native method of this client
          // (i.e. method set during call to constructor)
          if($method == '')
          {
             $method = $this->method;
          }
 
          if(is_array($msg))
          {
             // $msg is an array of xmlrpcmsg's
             $r = $this->multicall($msg, $timeout, $method);
             return $r;
          }
          elseif(is_string($msg))
          {
             $n =& new xmlrpcmsg('');
             $n->payload = $msg;
             $msg = $n;
          }
 
          // where msg is an xmlrpcmsg
          $msg->debug=$this->debug;
 
          if($method == 'https')
          {
             $r =& $this->sendPayloadHTTPS(
                $msg,
                $this->server,
                $this->port,
                $timeout,
                $this->username,
                $this->password,
                $this->authtype,
                $this->cert,
                $this->certpass,
                $this->cacert,
                $this->cacertdir,
                $this->proxy,
                $this->proxyport,
                $this->proxy_user,
                $this->proxy_pass,
                $this->proxy_authtype,
                $this->keepalive,
                $this->key,
                $this->keypass
             );
          }
          elseif($method == 'http11')
          {
             $r =& $this->sendPayloadCURL(
                $msg,
                $this->server,
                $this->port,
                $timeout,
                $this->username,
                $this->password,
                $this->authtype,
                null,
                null,
                null,
                null,
                $this->proxy,
                $this->proxyport,
                $this->proxy_user,
                $this->proxy_pass,
                $this->proxy_authtype,
                'http',
                $this->keepalive
             );
          }
          else
          {
             $r =& $this->sendPayloadHTTP10(
                $msg,
                $this->server,
                $this->port,
                $timeout,
                $this->username,
                $this->password,
                $this->authtype,
                $this->proxy,
                $this->proxyport,
                $this->proxy_user,
                $this->proxy_pass,
                $this->proxy_authtype
             );
          }
 
          return $r;
       }
 
       /**
       * @access private
       */
       function &sendPayloadHTTP10($msg, $server, $port, $timeout=0,
          $username='', $password='', $authtype=1, $proxyhost='',
          $proxyport=0, $proxyusername='', $proxypassword='', $proxyauthtype=1)
       {
          if($port==0)
          {
             $port=80;
          }
 
          // Only create the payload if it was not created previously
          if(empty($msg->payload))
          {
             $msg->createPayload($this->request_charset_encoding);
          }
 
          $payload = $msg->payload;
          // Deflate request body and set appropriate request headers
          if(function_exists('gzdeflate') && ($this->request_compression == 'gzip' || $this->request_compression == 'deflate'))
          {
             if($this->request_compression == 'gzip')
             {
                $a = @gzencode($payload);
                if($a)
                {
                   $payload = $a;
                   $encoding_hdr = "Content-Encoding: gzip\r\n";
                }
             }
             else
             {
                $a = @gzcompress($payload);
                if($a)
                {
                   $payload = $a;
                   $encoding_hdr = "Content-Encoding: deflate\r\n";
                }
             }
          }
          else
          {
             $encoding_hdr = '';
          }
 
          // thanks to Grant Rauscher <grant7@firstworld.net> for this
          $credentials='';
          if($username!='')
          {
             $credentials='Authorization: Basic ' . base64_encode($username . ':' . $password) . "\r\n";
             if ($authtype != 1)
             {
                error_log('XML-RPC: xmlrpc_client::send: warning. Only Basic auth is supported with HTTP 1.0');
             }
          }
 
          $accepted_encoding = '';
          if(is_array($this->accepted_compression) && count($this->accepted_compression))
          {
             $accepted_encoding = 'Accept-Encoding: ' . implode(', ', $this->accepted_compression) . "\r\n";
          }
 
          $proxy_credentials = '';
          if($proxyhost)
          {
             if($proxyport == 0)
             {
                $proxyport = 8080;
             }
             $connectserver = $proxyhost;
             $connectport = $proxyport;
             $uri = 'http://'.$server.':'.$port.$this->path;
             if($proxyusername != '')
             {
                if ($proxyauthtype != 1)
                {
                   error_log('XML-RPC: xmlrpc_client::send: warning. Only Basic auth to proxy is supported with HTTP 1.0');
                }
                $proxy_credentials = 'Proxy-Authorization: Basic ' . base64_encode($proxyusername.':'.$proxypassword) . "\r\n";
             }
          }
          else
          {
             $connectserver = $server;
             $connectport = $port;
             $uri = $this->path;
          }
 
          // Cookie generation, as per rfc2965 (version 1 cookies) or
          // netscape's rules (version 0 cookies)
          $cookieheader='';
          if (count($this->cookies))
          {
             $version = '';
             foreach ($this->cookies as $name => $cookie)
             {
                if ($cookie['version'])
                {
                   $version = ' $Version="' . $cookie['version'] . '";';
                   $cookieheader .= ' ' . $name . '="' . $cookie['value'] . '";';
                   if ($cookie['path'])
                      $cookieheader .= ' $Path="' . $cookie['path'] . '";';
                   if ($cookie['domain'])
                      $cookieheader .= ' $Domain="' . $cookie['domain'] . '";';
                   if ($cookie['port'])
                      $cookieheader .= ' $Port="' . $cookie['port'] . '";';
                }
                else
                {
                   $cookieheader .= ' ' . $name . '=' . $cookie['value'] . ";";
                }
             }
             $cookieheader = 'Cookie:' . $version . substr($cookieheader, 0, -1) . "\r\n";
          }
 
          $op= 'POST ' . $uri. " HTTP/1.0\r\n" .
             'User-Agent: ' . $GLOBALS['xmlrpcName'] . ' ' . $GLOBALS['xmlrpcVersion'] . "\r\n" .
             'Host: '. $server . ':' . $port . "\r\n" .
             $credentials .
             $proxy_credentials .
             $accepted_encoding .
             $encoding_hdr .
             'Accept-Charset: ' . implode(',', $this->accepted_charset_encodings) . "\r\n" .
             $cookieheader .
             'Content-Type: ' . $msg->content_type . "\r\nContent-Length: " .
             strlen($payload) . "\r\n\r\n" .
             $payload;
 
          if($this->debug > 1)
          {
             print "<PRE>\n---SENDING---\n" . htmlentities($op) . "\n---END---\n</PRE>";
             // let the client see this now in case http times out...
             flush();
          }
 
          if($timeout>0)
          {
             $fp=@fsockopen($connectserver, $connectport, $this->errno, $this->errstr, $timeout);
          }
          else
          {
             $fp=@fsockopen($connectserver, $connectport, $this->errno, $this->errstr);
          }
          if($fp)
          {
             if($timeout>0 && function_exists('stream_set_timeout'))
             {
                stream_set_timeout($fp, $timeout);
             }
          }
          else
          {
             $this->errstr='Connect error: '.$this->errstr;
             $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['http_error'], $this->errstr . ' (' . $this->errno . ')');
             return $r;
          }
 
          if(!fputs($fp, $op, strlen($op)))
          {
             $this->errstr='Write error';
             $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['http_error'], $this->errstr);
             return $r;
          }
          else
          {
             // reset errno and errstr on succesful socket connection
             $this->errstr = '';
          }
          // G. Giunta 2005/10/24: close socket before parsing.
          // should yeld slightly better execution times, and make easier recursive calls (e.g. to follow http redirects)
          $ipd='';
          while($data=fread($fp, 32768))
          {
             // shall we check for $data === FALSE?
             // as per the manual, it signals an error
             $ipd.=$data;
          }
          fclose($fp);
          $r =& $msg->parseResponse($ipd, false, $this->return_type);
          return $r;
 
       }
 
       /**
       * @access private
       */
       function &sendPayloadHTTPS($msg, $server, $port, $timeout=0, $username='',
          $password='', $authtype=1, $cert='',$certpass='', $cacert='', $cacertdir='',
          $proxyhost='', $proxyport=0, $proxyusername='', $proxypassword='', $proxyauthtype=1,
          $keepalive=false, $key='', $keypass='')
       {
          $r =& $this->sendPayloadCURL($msg, $server, $port, $timeout, $username,
             $password, $authtype, $cert, $certpass, $cacert, $cacertdir, $proxyhost, $proxyport,
             $proxyusername, $proxypassword, $proxyauthtype, 'https', $keepalive, $key, $keypass);
          return $r;
       }
 
       /**
       * Contributed by Justin Miller <justin@voxel.net>
       * Requires curl to be built into PHP
       * NB: CURL versions before 7.11.10 cannot use proxy to talk to https servers!
       * @access private
       */
       function &sendPayloadCURL($msg, $server, $port, $timeout=0, $username='',
          $password='', $authtype=1, $cert='', $certpass='', $cacert='', $cacertdir='',
          $proxyhost='', $proxyport=0, $proxyusername='', $proxypassword='', $proxyauthtype=1, $method='https',
          $keepalive=false, $key='', $keypass='')
       {
          if(!function_exists('curl_init'))
          {
             $this->errstr='CURL unavailable on this install';
             $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['no_curl'], $GLOBALS['xmlrpcstr']['no_curl']);
             return $r;
          }
          if($method == 'https')
          {
             if(($info = curl_version()) &&
                ((is_string($info) && strpos($info, 'OpenSSL') === null) || (is_array($info) && !isset($info['ssl_version']))))
             {
                $this->errstr='SSL unavailable on this install';
                $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['no_ssl'], $GLOBALS['xmlrpcstr']['no_ssl']);
                return $r;
             }
          }
 
          if($port == 0)
          {
             if($method == 'http')
             {
                $port = 80;
             }
             else
             {
                $port = 443;
             }
          }
 
          // Only create the payload if it was not created previously
          if(empty($msg->payload))
          {
             $msg->createPayload($this->request_charset_encoding);
          }
 
          // Deflate request body and set appropriate request headers
          $payload = $msg->payload;
          if(function_exists('gzdeflate') && ($this->request_compression == 'gzip' || $this->request_compression == 'deflate'))
          {
             if($this->request_compression == 'gzip')
             {
                $a = @gzencode($payload);
                if($a)
                {
                   $payload = $a;
                   $encoding_hdr = 'Content-Encoding: gzip';
                }
             }
             else
             {
                $a = @gzcompress($payload);
                if($a)
                {
                   $payload = $a;
                   $encoding_hdr = 'Content-Encoding: deflate';
                }
             }
          }
          else
          {
             $encoding_hdr = '';
          }
 
          if($this->debug > 1)
          {
             print "<PRE>\n---SENDING---\n" . htmlentities($payload) . "\n---END---\n</PRE>";
             // let the client see this now in case http times out...
             flush();
          }
 
          if(!$keepalive || !$this->xmlrpc_curl_handle)
          {
             $curl = curl_init($method . '://' . $server . ':' . $port . $this->path);
             if($keepalive)
             {
                $this->xmlrpc_curl_handle = $curl;
             }
          }
          else
          {
             $curl = $this->xmlrpc_curl_handle;
          }
 
          // results into variable
          curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 
          if($this->debug)
          {
             curl_setopt($curl, CURLOPT_VERBOSE, 1);
          }
          curl_setopt($curl, CURLOPT_USERAGENT, $GLOBALS['xmlrpcName'].' '.$GLOBALS['xmlrpcVersion']);
          // required for XMLRPC: post the data
          curl_setopt($curl, CURLOPT_POST, 1);
          // the data
          curl_setopt($curl, CURLOPT_POSTFIELDS, $payload);
 
          // return the header too
          curl_setopt($curl, CURLOPT_HEADER, 1);
 
          // will only work with PHP >= 5.0
          // NB: if we set an empty string, CURL will add http header indicating
          // ALL methods it is supporting. This is possibly a better option than
          // letting the user tell what curl can / cannot do...
          if(is_array($this->accepted_compression) && count($this->accepted_compression))
          {
             //curl_setopt($curl, CURLOPT_ENCODING, implode(',', $this->accepted_compression));
             // empty string means 'any supported by CURL' (shall we catch errors in case CURLOPT_SSLKEY undefined ?)
             if (count($this->accepted_compression) == 1)
             {
                curl_setopt($curl, CURLOPT_ENCODING, $this->accepted_compression[0]);
             }
             else
                curl_setopt($curl, CURLOPT_ENCODING, '');
          }
          // extra headers
          $headers = array('Content-Type: ' . $msg->content_type , 'Accept-Charset: ' . implode(',', $this->accepted_charset_encodings));
          // if no keepalive is wanted, let the server know it in advance
          if(!$keepalive)
          {
             $headers[] = 'Connection: close';
          }
          // request compression header
          if($encoding_hdr)
          {
             $headers[] = $encoding_hdr;
          }
 
          curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
          // timeout is borked
          if($timeout)
          {
             curl_setopt($curl, CURLOPT_TIMEOUT, $timeout == 1 ? 1 : $timeout - 1);
          }
 
          if($username && $password)
          {
             curl_setopt($curl, CURLOPT_USERPWD, $username.':'.$password);
             if (defined('CURLOPT_HTTPAUTH'))
             {
                curl_setopt($curl, CURLOPT_HTTPAUTH, $authtype);
             }
             else if ($authtype != 1)
             {
                error_log('XML-RPC: xmlrpc_client::send: warning. Only Basic auth is supported by the current PHP/curl install');
             }
          }
 
          if($method == 'https')
          {
             // set cert file
             if($cert)
             {
                curl_setopt($curl, CURLOPT_SSLCERT, $cert);
             }
             // set cert password
             if($certpass)
             {
                curl_setopt($curl, CURLOPT_SSLCERTPASSWD, $certpass);
             }
             // whether to verify remote host's cert
             curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $this->verifypeer);
             // set ca certificates file/dir
             if($cacert)
             {
                curl_setopt($curl, CURLOPT_CAINFO, $cacert);
             }
             if($cacertdir)
             {
                curl_setopt($curl, CURLOPT_CAPATH, $cacertdir);
             }
             // set key file (shall we catch errors in case CURLOPT_SSLKEY undefined ?)
             if($key)
             {
                curl_setopt($curl, CURLOPT_SSLKEY, $key);
             }
             // set key password (shall we catch errors in case CURLOPT_SSLKEY undefined ?)
             if($keypass)
             {
                curl_setopt($curl, CURLOPT_SSLKEYPASSWD, $keypass);
             }
             // whether to verify cert's common name (CN); 0 for no, 1 to verify that it exists, and 2 to verify that it matches the hostname used
             curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, $this->verifyhost);
          }
 
          // proxy info
          if($proxyhost)
          {
             if($proxyport == 0)
             {
                $proxyport = 8080; // NB: even for HTTPS, local connection is on port 8080
             }
             curl_setopt($curl, CURLOPT_PROXY, $proxyhost.':'.$proxyport);
             //curl_setopt($curl, CURLOPT_PROXYPORT,$proxyport);
             if($proxyusername)
             {
                curl_setopt($curl, CURLOPT_PROXYUSERPWD, $proxyusername.':'.$proxypassword);
                if (defined('CURLOPT_PROXYAUTH'))
                {
                   curl_setopt($curl, CURLOPT_PROXYAUTH, $proxyauthtype);
                }
                else if ($proxyauthtype != 1)
                {
                   error_log('XML-RPC: xmlrpc_client::send: warning. Only Basic auth to proxy is supported by the current PHP/curl install');
                }
             }
          }
 
          // NB: should we build cookie http headers by hand rather than let CURL do it?
          // the following code does not honour 'expires', 'path' and 'domain' cookie attributes
          // set to client obj the the user...
          if (count($this->cookies))
          {
             $cookieheader = '';
             foreach ($this->cookies as $name => $cookie)
             {
                $cookieheader .= $name . '=' . $cookie['value'] . '; ';
             }
             curl_setopt($curl, CURLOPT_COOKIE, substr($cookieheader, 0, -2));
          }
 
          $result = curl_exec($curl);
 
          if ($this->debug > 1)
          {
             print "<PRE>\n---CURL INFO---\n";
             foreach(curl_getinfo($curl) as $name => $val)
                 print $name . ': ' . htmlentities($val). "\n";
             print "---END---\n</PRE>";
          }
 
          if(!$result) /// @todo we should use a better check here - what if we get back '' or '0'?
          {
             $this->errstr='no response';
             $resp=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['curl_fail'], $GLOBALS['xmlrpcstr']['curl_fail']. ': '. curl_error($curl));
             curl_close($curl);
             if($keepalive)
             {
                $this->xmlrpc_curl_handle = null;
             }
          }
          else
          {
             if(!$keepalive)
             {
                curl_close($curl);
             }
             $resp =& $msg->parseResponse($result, true, $this->return_type);
          }
          return $resp;
       }
 
       /**
       * Send an array of request messages and return an array of responses.
       * Unless $this->no_multicall has been set to true, it will try first
       * to use one single xmlrpc call to server method system.multicall, and
       * revert to sending many successive calls in case of failure.
       * This failure is also stored in $this->no_multicall for subsequent calls.
       * Unfortunately, there is no server error code universally used to denote
       * the fact that multicall is unsupported, so there is no way to reliably
       * distinguish between that and a temporary failure.
       * If you are sure that server supports multicall and do not want to
       * fallback to using many single calls, set the fourth parameter to FALSE.
       *
       * NB: trying to shoehorn extra functionality into existing syntax has resulted
       * in pretty much convoluted code...
       *
       * @param array $msgs an array of xmlrpcmsg objects
       * @param integer $timeout connection timeout (in seconds)
       * @param string $method the http protocol variant to be used
       * @param boolean fallback When true, upon receiveing an error during multicall, multiple single calls will be attempted
       * @return array
       * @access public
       */
       function multicall($msgs, $timeout=0, $method='', $fallback=true)
       {
          if ($method == '')
          {
             $method = $this->method;
          }
          if(!$this->no_multicall)
          {
             $results = $this->_try_multicall($msgs, $timeout, $method);
             if(is_array($results))
             {
                // System.multicall succeeded
                return $results;
             }
             else
             {
                // either system.multicall is unsupported by server,
                // or call failed for some other reason.
                if ($fallback)
                {
                   // Don't try it next time...
                   $this->no_multicall = true;
                }
                else
                {
                   if (is_a($results, 'xmlrpcresp'))
                   {
                      $result = $results;
                   }
                   else
                   {
                      $result =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['multicall_error'], $GLOBALS['xmlrpcstr']['multicall_error']);
                   }
                }
             }
          }
          else
          {
             // override fallback, in case careless user tries to do two
             // opposite things at the same time
             $fallback = true;
          }
 
          $results = array();
          if ($fallback)
          {
             // system.multicall is (probably) unsupported by server:
             // emulate multicall via multiple requests
             foreach($msgs as $msg)
             {
                $results[] =& $this->send($msg, $timeout, $method);
             }
          }
          else
          {
             // user does NOT want to fallback on many single calls:
             // since we should always return an array of responses,
             // return an array with the same error repeated n times
             foreach($msgs as $msg)
             {
                $results[] = $result;
             }
          }
          return $results;
       }
 
       /**
       * Attempt to boxcar $msgs via system.multicall.
       * Returns either an array of xmlrpcreponses, an xmlrpc error response
       * or false (when received response does not respect valid multicall syntax)
       * @access private
       */
       function _try_multicall($msgs, $timeout, $method)
       {
          // Construct multicall message
          $calls = array();
          foreach($msgs as $msg)
          {
             $call['methodName'] =& new xmlrpcval($msg->method(),'string');
             $numParams = $msg->getNumParams();
             $params = array();
             for($i = 0; $i < $numParams; $i++)
             {
                $params[$i] = $msg->getParam($i);
             }
             $call['params'] =& new xmlrpcval($params, 'array');
             $calls[] =& new xmlrpcval($call, 'struct');
          }
          $multicall =& new xmlrpcmsg('system.multicall');
          $multicall->addParam(new xmlrpcval($calls, 'array'));
 
          // Attempt RPC call
          $result =& $this->send($multicall, $timeout, $method);
 
          if($result->faultCode() != 0)
          {
             // call to system.multicall failed
             return $result;
          }
 
          // Unpack responses.
          $rets = $result->value();
 
          if ($this->return_type == 'xml')
          {
                return $rets;
          }
          else if ($this->return_type == 'phpvals')
          {
             ///@todo test this code branch...
             $rets = $result->value();
             if(!is_array($rets))
             {
                return false;     // bad return type from system.multicall
             }
             $numRets = count($rets);
             if($numRets != count($msgs))
             {
                return false;     // wrong number of return values.
             }
 
             $response = array();
             for($i = 0; $i < $numRets; $i++)
             {
                $val = $rets[$i];
                if (!is_array($val)) {
                   return false;
                }
                switch(count($val))
                {
                   case 1:
                      if(!isset($val[0]))
                      {
                         return false;     // Bad value
                      }
                      // Normal return value
                      $response[$i] =& new xmlrpcresp($val[0], 0, '', 'phpvals');
                      break;
                   case 2:
                      ///   @todo remove usage of @: it is apparently quite slow
                      $code = @$val['faultCode'];
                      if(!is_int($code))
                      {
                         return false;
                      }
                      $str = @$val['faultString'];
                      if(!is_string($str))
                      {
                         return false;
                      }
                      $response[$i] =& new xmlrpcresp(0, $code, $str);
                      break;
                   default:
                      return false;
                }
             }
             return $response;
          }
          else // return type == 'xmlrpcvals'
          {
             $rets = $result->value();
             if($rets->kindOf() != 'array')
             {
                return false;     // bad return type from system.multicall
             }
             $numRets = $rets->arraysize();
             if($numRets != count($msgs))
             {
                return false;     // wrong number of return values.
             }
 
             $response = array();
             for($i = 0; $i < $numRets; $i++)
             {
                $val = $rets->arraymem($i);
                switch($val->kindOf())
                {
                   case 'array':
                      if($val->arraysize() != 1)
                      {
                         return false;     // Bad value
                      }
                      // Normal return value
                      $response[$i] =& new xmlrpcresp($val->arraymem(0));
                      break;
                   case 'struct':
                      $code = $val->structmem('faultCode');
                      if($code->kindOf() != 'scalar' || $code->scalartyp() != 'int')
                      {
                         return false;
                      }
                      $str = $val->structmem('faultString');
                      if($str->kindOf() != 'scalar' || $str->scalartyp() != 'string')
                      {
                         return false;
                      }
                      $response[$i] =& new xmlrpcresp(0, $code->scalarval(), $str->scalarval());
                      break;
                   default:
                      return false;
                }
             }
             return $response;
          }
       }
    } // end class xmlrpc_client
 
    class xmlrpcresp
    {
       var $val = 0;
       var $valtyp;
       var $errno = 0;
       var $errstr = '';
       var $payload;
       var $hdrs = array();
       var $_cookies = array();
       var $content_type = 'text/xml';
       var $raw_data = '';
 
       /**
       * @param mixed $val either an xmlrpcval obj, a php value or the xml serialization of an xmlrpcval (a string)
       * @param integer $fcode set it to anything but 0 to create an error response
       * @param string $fstr the error string, in case of an error response
       * @param string $valtyp either 'xmlrpcvals', 'phpvals' or 'xml'
       *
       * @todo add check that $val / $fcode / $fstr is of correct type???
       * NB: as of now we do not do it, since it might be either an xmlrpcval or a plain
       * php val, or a complete xml chunk, depending on usage of xmlrpc_client::send() inside which creator is called...
       */
       function xmlrpcresp($val, $fcode = 0, $fstr = '', $valtyp='')
       {
          if($fcode != 0)
          {
             // error response
             $this->errno = $fcode;
             $this->errstr = $fstr;
             //$this->errstr = htmlspecialchars($fstr); // XXX: encoding probably shouldn't be done here; fix later.
          }
          else
          {
             // successful response
             $this->val = $val;
             if ($valtyp == '')
             {
                // user did not declare type of response value: try to guess it
                if (is_object($this->val) && is_a($this->val, 'xmlrpcval'))
                {
                   $this->valtyp = 'xmlrpcvals';
                }
                else if (is_string($this->val))
                {
                   $this->valtyp = 'xml';
 
                }
                else
                {
                   $this->valtyp = 'phpvals';
                }
             }
             else
             {
                // user declares type of resp value: believe him
                $this->valtyp = $valtyp;
             }
          }
       }
 
       /**
       * Returns the error code of the response.
       * @return integer the error code of this response (0 for not-error responses)
       * @access public
       */
       function faultCode()
       {
          return $this->errno;
       }
 
       /**
       * Returns the error code of the response.
       * @return string the error string of this response ('' for not-error responses)
       * @access public
       */
       function faultString()
       {
          return $this->errstr;
       }
 
       /**
       * Returns the value received by the server.
       * @return mixed the xmlrpcval object returned by the server. Might be an xml string or php value if the response has been created by specially configured xmlrpc_client objects
       * @access public
       */
       function value()
       {
          return $this->val;
       }
 
       /**
       * Returns an array with the cookies received from the server.
       * Array has the form: $cookiename => array ('value' => $val, $attr1 => $val1, $attr2 = $val2, ...)
       * with attributes being e.g. 'expires', 'path', domain'.
       * NB: cookies sent as 'expired' by the server (i.e. with an expiry date in the past)
       * are still present in the array. It is up to the user-defined code to decide
       * how to use the received cookies, and wheter they have to be sent back with the next
       * request to the server (using xmlrpc_client::setCookie) or not
       * @return array array of cookies received from the server
       * @access public
       */
       function cookies()
       {
          return $this->_cookies;
       }
 
       /**
       * Returns xml representation of the response. XML prologue not included
       * @param string $charset_encoding the charset to be used for serialization. if null, US-ASCII is assumed
       * @return string the xml representation of the response
       * @access public
       */
       function serialize($charset_encoding='')
       {
          if ($charset_encoding != '')
             $this->content_type = 'text/xml; charset=' . $charset_encoding;
          else
             $this->content_type = 'text/xml';
          $result = "<methodResponse>\n";
          if($this->errno)
          {
             // G. Giunta 2005/2/13: let non-ASCII response messages be tolerated by clients
             // by xml-encoding non ascii chars
             $result .= "<fault>\n" .
 "<value>\n<struct><member><name>faultCode</name>\n<value><int>" . $this->errno .
 "</int></value>\n</member>\n<member>\n<name>faultString</name>\n<value><string>" .
 xmlrpc_encode_entitites($this->errstr, $GLOBALS['xmlrpc_internalencoding'], $charset_encoding) . "</string></value>\n</member>\n" .
 "</struct>\n</value>\n</fault>";
          }
          else
          {
             if(!is_object($this->val) || !is_a($this->val, 'xmlrpcval'))
             {
                if (is_string($this->val) && $this->valtyp == 'xml')
                {
                   $result .= "<params>\n<param>\n" .
                      $this->val .
                      "</param>\n</params>";
                }
                else
                {
                   /// @todo try to build something serializable?
                   die('cannot serialize xmlrpcresp objects whose content is native php values');
                }
             }
             else
             {
                $result .= "<params>\n<param>\n" .
                   $this->val->serialize($charset_encoding) .
                   "</param>\n</params>";
             }
          }
          $result .= "\n</methodResponse>";
          $this->payload = $result;
          return $result;
       }
    }
 
    class xmlrpcmsg
    {
       var $payload;
       var $methodname;
       var $params=array();
       var $debug=0;
       var $content_type = 'text/xml';
 
       /**
       * @param string $meth the name of the method to invoke
       * @param array $pars array of parameters to be paased to the method (xmlrpcval objects)
       */
       function xmlrpcmsg($meth, $pars=0)
       {
          $this->methodname=$meth;
          if(is_array($pars) && count($pars)>0)
          {
             for($i=0; $i<count($pars); $i++)
             {
                $this->addParam($pars[$i]);
             }
          }
       }
 
       /**
       * @access private
       */
       function xml_header($charset_encoding='')
       {
          if ($charset_encoding != '')
          {
             return "<?xml version=\"1.0\" encoding=\"$charset_encoding\" ?" . ">\n<methodCall>\n";
          }
          else
          {
             return "<?xml version=\"1.0\"?" . ">\n<methodCall>\n";
          }
       }
 
       /**
       * @access private
       */
       function xml_footer()
       {
          return '</methodCall>';
       }
 
       /**
       * @access private
       */
       function kindOf()
       {
          return 'msg';
       }
 
       /**
       * @access private
       */
       function createPayload($charset_encoding='')
       {
          if ($charset_encoding != '')
             $this->content_type = 'text/xml; charset=' . $charset_encoding;
          else
             $this->content_type = 'text/xml';
          $this->payload=$this->xml_header($charset_encoding);
          $this->payload.='<methodName>' . $this->methodname . "</methodName>\n";
          $this->payload.="<params>\n";
          for($i=0; $i<count($this->params); $i++)
          {
             $p=$this->params[$i];
             $this->payload.="<param>\n" . $p->serialize($charset_encoding) .
             "</param>\n";
          }
          $this->payload.="</params>\n";
          $this->payload.=$this->xml_footer();
       }
 
       /**
       * Gets/sets the xmlrpc method to be invoked
       * @param string $meth the method to be set (leave empty not to set it)
       * @return string the method that will be invoked
       * @access public
       */
       function method($meth='')
       {
          if($meth!='')
          {
             $this->methodname=$meth;
          }
          return $this->methodname;
       }
 
       /**
       * Returns xml representation of the message. XML prologue included
       * @return string the xml representation of the message, xml prologue included
       * @access public
       */
       function serialize($charset_encoding='')
       {
          $this->createPayload($charset_encoding);
          return $this->payload;
       }
 
       /**
       * Add a parameter to the list of parameters to be used upon method invocation
       * @param xmlrpcval $par
       * @return boolean false on failure
       * @access public
       */
       function addParam($par)
       {
          // add check: do not add to self params which are not xmlrpcvals
          if(is_object($par) && is_a($par, 'xmlrpcval'))
          {
             $this->params[]=$par;
             return true;
          }
          else
          {
             return false;
          }
       }
 
       /**
       * Returns the nth parameter in the message. The index zero-based.
       * @param integer $i the index of the parameter to fetch (zero based)
       * @return xmlrpcval the i-th parameter
       * @access public
       */
       function getParam($i) { return $this->params[$i]; }
 
       /**
       * Returns the number of parameters in the messge.
       * @return integer the number of parameters currently set
       * @access public
       */
       function getNumParams() { return count($this->params); }
 
       /**
       * Given an open file handle, read all data available and parse it as axmlrpc response.
       * NB: the file handle is not closed by this function.
       * @access public
       * @return xmlrpcresp
       * @todo add 2nd & 3rd param to be passed to ParseResponse() ???
       */
       function &parseResponseFile($fp)
       {
          $ipd='';
          while($data=fread($fp, 32768))
          {
             $ipd.=$data;
          }
          //fclose($fp);
          $r =& $this->parseResponse($ipd);
          return $r;
       }
 
       /**
       * Parses HTTP headers and separates them from data.
       * @access private
       */
       function &parseResponseHeaders(&$data, $headers_processed=false)
       {
             // Support "web-proxy-tunelling" connections for https through proxies
             if(preg_match('/^HTTP\/1\.[0-1] 200 Connection established/', $data))
             {
                // Look for CR/LF or simple LF as line separator,
                // (even though it is not valid http)
                $pos = strpos($data,"\r\n\r\n");
                if($pos || is_int($pos))
                {
                   $bd = $pos+4;
                }
                else
                {
                   $pos = strpos($data,"\n\n");
                   if($pos || is_int($pos))
                   {
                      $bd = $pos+2;
                   }
                   else
                   {
                      // No separation between response headers and body: fault?
                      $bd = 0;
                   }
                }
                if ($bd)
                {
                   // this filters out all http headers from proxy.
                   // maybe we could take them into account, too?
                   $data = substr($data, $bd);
                }
                else
                {
                   error_log('XML-RPC: xmlrpcmsg::parseResponse: HTTPS via proxy error, tunnel connection possibly failed');
                   $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['http_error'], $GLOBALS['xmlrpcstr']['http_error']. ' (HTTPS via proxy error, tunnel connection possibly failed)');
                   return $r;
                }
             }
 
             // Strip HTTP 1.1 100 Continue header if present
             while(preg_match('/^HTTP\/1\.1 1[0-9]{2} /', $data))
             {
                $pos = strpos($data, 'HTTP', 12);
                // server sent a Continue header without any (valid) content following...
                // give the client a chance to know it
                if(!$pos && !is_int($pos)) // works fine in php 3, 4 and 5
                {
                   break;
                }
                $data = substr($data, $pos);
             }
             if(!preg_match('/^HTTP\/[0-9.]+ 200 /', $data))
             {
                $errstr= substr($data, 0, strpos($data, "\n")-1);
                error_log('XML-RPC: xmlrpcmsg::parseResponse: HTTP error, got response: ' .$errstr);
                $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['http_error'], $GLOBALS['xmlrpcstr']['http_error']. ' (' . $errstr . ')');
                return $r;
             }
 
             $GLOBALS['_xh']['headers'] = array();
             $GLOBALS['_xh']['cookies'] = array();
 
             // be tolerant to usage of \n instead of \r\n to separate headers and data
             // (even though it is not valid http)
             $pos = strpos($data,"\r\n\r\n");
             if($pos || is_int($pos))
             {
                $bd = $pos+4;
             }
             else
             {
                $pos = strpos($data,"\n\n");
                if($pos || is_int($pos))
                {
                   $bd = $pos+2;
                }
                else
                {
                   // No separation between response headers and body: fault?
                   // we could take some action here instead of going on...
                   $bd = 0;
                }
             }
             // be tolerant to line endings, and extra empty lines
             $ar = split("\r?\n", trim(substr($data, 0, $pos)));
             while(list(,$line) = @each($ar))
             {
                // take care of multi-line headers and cookies
                $arr = explode(':',$line,2);
                if(count($arr) > 1)
                {
                   $header_name = strtolower(trim($arr[0]));
                   /// @todo some other headers (the ones that allow a CSV list of values)
                   /// do allow many values to be passed using multiple header lines.
                   /// We should add content to $GLOBALS['_xh']['headers'][$header_name]
                   /// instead of replacing it for those...
                   if ($header_name == 'set-cookie' || $header_name == 'set-cookie2')
                   {
                      if ($header_name == 'set-cookie2')
                      {
                         // version 2 cookies:
                         // there could be many cookies on one line, comma separated
                         $cookies = explode(',', $arr[1]);
                      }
                      else
                      {
                         $cookies = array($arr[1]);
                      }
                      foreach ($cookies as $cookie)
                      {
                         // glue together all received cookies, using a comma to separate them
                         // (same as php does with getallheaders())
                         if (isset($GLOBALS['_xh']['headers'][$header_name]))
                            $GLOBALS['_xh']['headers'][$header_name] .= ', ' . trim($cookie);
                         else
                            $GLOBALS['_xh']['headers'][$header_name] = trim($cookie);
                         // parse cookie attributes, in case user wants to correctly honour them
                         // feature creep: only allow rfc-compliant cookie attributes?
                         // @todo support for server sending multiple time cookie with same name, but using different PATHs
                         $cookie = explode(';', $cookie);
                         foreach ($cookie as $pos => $val)
                         {
                            $val = explode('=', $val, 2);
                            $tag = trim($val[0]);
                            $val = trim(@$val[1]);
                            /// @todo with version 1 cookies, we should strip leading and trailing " chars
                            if ($pos == 0)
                            {
                               $cookiename = $tag;
                               $GLOBALS['_xh']['cookies'][$tag] = array();
                               $GLOBALS['_xh']['cookies'][$cookiename]['value'] = urldecode($val);
                            }
                            else
                            {
                               if ($tag != 'value')
                               {
                                 $GLOBALS['_xh']['cookies'][$cookiename][$tag] = $val;
                               }
                            }
                         }
                      }
                   }
                   else
                   {
                      $GLOBALS['_xh']['headers'][$header_name] = trim($arr[1]);
                   }
                }
                elseif(isset($header_name))
                {
                   ///   @todo version1 cookies might span multiple lines, thus breaking the parsing above
                   $GLOBALS['_xh']['headers'][$header_name] .= ' ' . trim($line);
                }
             }
 
             $data = substr($data, $bd);
 
             if($this->debug && count($GLOBALS['_xh']['headers']))
             {
                print '<PRE>';
                foreach($GLOBALS['_xh']['headers'] as $header => $value)
                {
                   print htmlentities("HEADER: $header: $value\n");
                }
                foreach($GLOBALS['_xh']['cookies'] as $header => $value)
                {
                   print htmlentities("COOKIE: $header={$value['value']}\n");
                }
                print "</PRE>\n";
             }
 
             // if CURL was used for the call, http headers have been processed,
             // and dechunking + reinflating have been carried out
             if(!$headers_processed)
             {
                // Decode chunked encoding sent by http 1.1 servers
                if(isset($GLOBALS['_xh']['headers']['transfer-encoding']) && $GLOBALS['_xh']['headers']['transfer-encoding'] == 'chunked')
                {
                   if(!$data = decode_chunked($data))
                   {
                      error_log('XML-RPC: xmlrpcmsg::parseResponse: errors occurred when trying to rebuild the chunked data received from server');
                      $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['dechunk_fail'], $GLOBALS['xmlrpcstr']['dechunk_fail']);
                      return $r;
                   }
                }
 
                // Decode gzip-compressed stuff
                // code shamelessly inspired from nusoap library by Dietrich Ayala
                if(isset($GLOBALS['_xh']['headers']['content-encoding']))
                {
                   $GLOBALS['_xh']['headers']['content-encoding'] = str_replace('x-', '', $GLOBALS['_xh']['headers']['content-encoding']);
                   if($GLOBALS['_xh']['headers']['content-encoding'] == 'deflate' || $GLOBALS['_xh']['headers']['content-encoding'] == 'gzip')
                   {
                      // if decoding works, use it. else assume data wasn't gzencoded
                      if(function_exists('gzinflate'))
                      {
                         if($GLOBALS['_xh']['headers']['content-encoding'] == 'deflate' && $degzdata = @gzuncompress($data))
                         {
                            $data = $degzdata;
                            if($this->debug)
                            print "<PRE>---INFLATED RESPONSE---[".strlen($data)." chars]---\n" . htmlentities($data) . "\n---END---</PRE>";
                         }
                         elseif($GLOBALS['_xh']['headers']['content-encoding'] == 'gzip' && $degzdata = @gzinflate(substr($data, 10)))
                         {
                            $data = $degzdata;
                            if($this->debug)
                            print "<PRE>---INFLATED RESPONSE---[".strlen($data)." chars]---\n" . htmlentities($data) . "\n---END---</PRE>";
                         }
                         else
                         {
                            error_log('XML-RPC: xmlrpcmsg::parseResponse: errors occurred when trying to decode the deflated data received from server');
                            $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['decompress_fail'], $GLOBALS['xmlrpcstr']['decompress_fail']);
                            return $r;
                         }
                      }
                      else
                      {
                         error_log('XML-RPC: xmlrpcmsg::parseResponse: the server sent deflated data. Your php install must have the Zlib extension compiled in to support this.');
                         $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['cannot_decompress'], $GLOBALS['xmlrpcstr']['cannot_decompress']);
                         return $r;
                      }
                   }
                }
             } // end of 'if needed, de-chunk, re-inflate response'
 
             // real stupid hack to avoid PHP 4 complaining about returning NULL by ref
             $r = null;
             $r =& $r;
             return $r;
       }
 
       /**
       * Parse the xmlrpc response contained in the string $data and return an xmlrpcresp object.
       * @param string $data the xmlrpc response, eventually including http headers
       * @param bool $headers_processed when true prevents parsing HTTP headers for interpretation of content-encoding and consequent decoding
       * @param string $return_type decides return type, i.e. content of response->value(). Either 'xmlrpcvals', 'xml' or 'phpvals'
       * @return xmlrpcresp
       * @access public
       */
       function &parseResponse($data='', $headers_processed=false, $return_type='xmlrpcvals')
       {
          if($this->debug)
          {
             //by maHo, replaced htmlspecialchars with htmlentities
             print "<PRE>---GOT---\n" . htmlentities($data) . "\n---END---\n</PRE>";
          }
 
          if($data == '')
          {
             error_log('XML-RPC: xmlrpcmsg::parseResponse: no response received from server.');
             $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['no_data'], $GLOBALS['xmlrpcstr']['no_data']);
             return $r;
          }
 
          $GLOBALS['_xh']=array();
 
          $raw_data = $data;
          // parse the HTTP headers of the response, if present, and separate them from data
          if(substr($data, 0, 4) == 'HTTP')
          {
             $r =& $this->parseResponseHeaders($data, $headers_processed);
             if ($r)
             {
                // failed processing of HTTP response headers
                // save into response obj the full payload received, for debugging
                $r->raw_data = $data;
                return $r;
             }
          }
          else
          {
             $GLOBALS['_xh']['headers'] = array();
             $GLOBALS['_xh']['cookies'] = array();
          }
 
          if($this->debug)
          {
             $start = strpos($data, '<!-- SERVER DEBUG INFO (BASE64 ENCODED):');
             if ($start)
             {
                $start += strlen('<!-- SERVER DEBUG INFO (BASE64 ENCODED):');
                $end = strpos($data, '-->', $start);
                $comments = substr($data, $start, $end-$start);
                print "<PRE>---SERVER DEBUG INFO (DECODED) ---\n\t".htmlentities(str_replace("\n", "\n\t", base64_decode($comments)))."\n---END---\n</PRE>";
             }
          }
 
          // be tolerant of extra whitespace in response body
          $data = trim($data);
 
          /// @todo return an error msg if $data=='' ?
 
          // be tolerant of junk after methodResponse (e.g. javascript ads automatically inserted by free hosts)
          // idea from Luca Mariano <luca.mariano@email.it> originally in PEARified version of the lib
          $bd = false;
          // Poor man's version of strrpos for php 4...
          $pos = strpos($data, '</methodResponse>');
          while($pos || is_int($pos))
          {
             $bd = $pos+17;
             $pos = strpos($data, '</methodResponse>', $bd);
          }
          if($bd)
          {
             $data = substr($data, 0, $bd);
          }
 
          // if user wants back raw xml, give it to him
          if ($return_type == 'xml')
          {
             $r =& new xmlrpcresp($data, 0, '', 'xml');
             $r->hdrs = $GLOBALS['_xh']['headers'];
             $r->_cookies = $GLOBALS['_xh']['cookies'];
             $r->raw_data = $raw_data;
             return $r;
          }
 
          // try to 'guestimate' the character encoding of the received response
          $resp_encoding = guess_encoding(@$GLOBALS['_xh']['headers']['content-type'], $data);
 
          $GLOBALS['_xh']['ac']='';
          //$GLOBALS['_xh']['qt']=''; //unused...
          $GLOBALS['_xh']['stack'] = array();
          $GLOBALS['_xh']['valuestack'] = array();
          $GLOBALS['_xh']['isf']=0; // 0 = OK, 1 for xmlrpc fault responses, 2 = invalid xmlrpc
          $GLOBALS['_xh']['isf_reason']='';
          $GLOBALS['_xh']['rt']=''; // 'methodcall or 'methodresponse'
 
          // if response charset encoding is not known / supported, try to use
          // the default encoding and parse the xml anyway, but log a warning...
          if (!in_array($resp_encoding, array('UTF-8', 'ISO-8859-1', 'US-ASCII')))
          // the following code might be better for mb_string enabled installs, but
          // makes the lib about 200% slower...
          //if (!is_valid_charset($resp_encoding, array('UTF-8', 'ISO-8859-1', 'US-ASCII')))
          {
             error_log('XML-RPC: xmlrpcmsg::parseResponse: invalid charset encoding of received response: '.$resp_encoding);
             $resp_encoding = $GLOBALS['xmlrpc_defencoding'];
          }
          $parser = xml_parser_create($resp_encoding);
          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 ($return_type == 'phpvals')
          {
             xml_set_element_handler($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');
 
          // first error check: xml not well formed
          if(!xml_parse($parser, $data, count($data)))
          {
             // thanks to Peter Kocks <peter.kocks@baygate.com>
             if((xml_get_current_line_number($parser)) == 1)
             {
                $errstr = 'XML error at line 1, check URL';
             }
             else
             {
                $errstr = sprintf('XML error: %s at line %d, column %d',
                   xml_error_string(xml_get_error_code($parser)),
                   xml_get_current_line_number($parser), xml_get_current_column_number($parser));
             }
             error_log($errstr);
             $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['invalid_return'], $GLOBALS['xmlrpcstr']['invalid_return'].' ('.$errstr.')');
             xml_parser_free($parser);
             if($this->debug)
             {
                print $errstr;
             }
             $r->hdrs = $GLOBALS['_xh']['headers'];
             $r->_cookies = $GLOBALS['_xh']['cookies'];
             $r->raw_data = $raw_data;
             return $r;
          }
          xml_parser_free($parser);
          // second error check: xml well formed but not xml-rpc compliant
          if ($GLOBALS['_xh']['isf'] > 1)
          {
             if ($this->debug)
             {
                /// @todo echo something for user?
             }
 
             $r =& new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['invalid_return'],
             $GLOBALS['xmlrpcstr']['invalid_return'] . ' ' . $GLOBALS['_xh']['isf_reason']);
          }
          // third error check: parsing of the response has somehow gone boink.
          // NB: shall we omit this check, since we trust the parsing code?
          elseif ($return_type == 'xmlrpcvals' && !is_object($GLOBALS['_xh']['value']))
          {
             // something odd has happened
             // and it's time to generate a client side error
             // indicating something odd went on
             $r=&new xmlrpcresp(0, $GLOBALS['xmlrpcerr']['invalid_return'],
                $GLOBALS['xmlrpcstr']['invalid_return']);
          }
          else
          {
             if ($this->debug)
             {
                print "<PRE>---PARSED---\n";
                // somehow htmlentities chokes on var_export, and some full html string...
                //print htmlentitites(var_export($GLOBALS['_xh']['value'], true));
                print htmlspecialchars(var_export($GLOBALS['_xh']['value'], true));
                print "\n---END---</PRE>";
             }
 
             // note that using =& will raise an error if $GLOBALS['_xh']['st'] does not generate an object.
             $v =& $GLOBALS['_xh']['value'];
 
             if($GLOBALS['_xh']['isf'])
             {
                /// @todo we should test here if server sent an int and a string,
                /// and/or coerce them into such...
                if ($return_type == 'xmlrpcvals')
                {
                   $errno_v = $v->structmem('faultCode');
                   $errstr_v = $v->structmem('faultString');
                   $errno = $errno_v->scalarval();
                   $errstr = $errstr_v->scalarval();
                }
                else
                {
                   $errno = $v['faultCode'];
                   $errstr = $v['faultString'];
                }
 
                if($errno == 0)
                {
                   // FAULT returned, errno needs to reflect that
                   $errno = -1;
                }
 
                $r =& new xmlrpcresp(0, $errno, $errstr);
             }
             else
             {
                $r=&new xmlrpcresp($v, 0, '', $return_type);
             }
          }
 
          $r->hdrs = $GLOBALS['_xh']['headers'];
          $r->_cookies = $GLOBALS['_xh']['cookies'];
          $r->raw_data = $raw_data;
          return $r;
       }
    }
 
    class xmlrpcval
    {
       var $me=array();
       var $mytype=0;
       var $_php_class=null;
 
       /**
       * @param mixed $val
       * @param string $type any valid xmlrpc type name (lowercase). If null, 'string' is assumed
       */
       function xmlrpcval($val=-1, $type='')
       {
          /// @todo: optimization creep - do not call addXX, do it all inline.
          /// downside: booleans will not be coerced anymore
          if($val!==-1 || $type!='')
          {
             // optimization creep: inlined all work done by constructor
             switch($type)
             {
                case '':
                   $this->mytype=1;
                   $this->me['string']=$val;
                   break;
                case 'i4':
                case 'int':
                case 'double':
                case 'string':
                case 'boolean':
                case 'dateTime.iso8601':
                case 'base64':
                case 'null':
                   $this->mytype=1;
                   $this->me[$type]=$val;
                   break;
                case 'array':
                   $this->mytype=2;
                   $this->me['array']=$val;
                   break;
                case 'struct':
                   $this->mytype=3;
                   $this->me['struct']=$val;
                   break;
                default:
                   error_log("XML-RPC: xmlrpcval::xmlrpcval: not a known type ($type)");
             }
             /*if($type=='')
             {
                $type='string';
             }
             if($GLOBALS['xmlrpcTypes'][$type]==1)
             {
                $this->addScalar($val,$type);
             }
             elseif($GLOBALS['xmlrpcTypes'][$type]==2)
             {
                $this->addArray($val);
             }
             elseif($GLOBALS['xmlrpcTypes'][$type]==3)
             {
                $this->addStruct($val);
             }*/
          }
       }
 
       /**
       * Add a single php value to an (unitialized) xmlrpcval
       * @param mixed $val
       * @param string $type
       * @return int 1 or 0 on failure
       */
       function addScalar($val, $type='string')
       {
          $typeof=@$GLOBALS['xmlrpcTypes'][$type];
          if($typeof!=1)
          {
             error_log("XML-RPC: xmlrpcval::addScalar: not a scalar type ($type)");
             return 0;
          }
 
          // coerce booleans into correct values
          // NB: we should iether do it for datetimes, integers and doubles, too,
          // or just plain remove this check, implemnted on booleans only...
          if($type==$GLOBALS['xmlrpcBoolean'])
          {
             if(strcasecmp($val,'true')==0 || $val==1 || ($val==true && strcasecmp($val,'false')))
             {
                $val=true;
             }
             else
             {
                $val=false;
             }
          }
 
          switch($this->mytype)
          {
             case 1:
                error_log('XML-RPC: xmlrpcval::addScalar: scalar xmlrpcval can have only one value');
                return 0;
             case 3:
                error_log('XML-RPC: xmlrpcval::addScalar: cannot add anonymous scalar to struct xmlrpcval');
                return 0;
             case 2:
                // we're adding a scalar value to an array here
                //$ar=$this->me['array'];
                //$ar[]=&new xmlrpcval($val, $type);
                //$this->me['array']=$ar;
                // Faster (?) avoid all the costly array-copy-by-val done here...
                $this->me['array'][]=&new xmlrpcval($val, $type);
                return 1;
             default:
                // a scalar, so set the value and remember we're scalar
                $this->me[$type]=$val;
                $this->mytype=$typeof;
                return 1;
          }
       }
 
       /**
       * Add an array of xmlrpcval objects to an xmlrpcval
       * @param array $vals
       * @return int 1 or 0 on failure
       * @access public
       *
       * @todo add some checking for $vals to be an array of xmlrpcvals?
       */
       function addArray($vals)
       {
          if($this->mytype==0)
          {
             $this->mytype=$GLOBALS['xmlrpcTypes']['array'];
             $this->me['array']=$vals;
             return 1;
          }
          elseif($this->mytype==2)
          {
             // we're adding to an array here
             $this->me['array'] = array_merge($this->me['array'], $vals);
             return 1;
          }
          else
          {
             error_log('XML-RPC: xmlrpcval::addArray: already initialized as a [' . $this->kindOf() . ']');
             return 0;
          }
       }
 
       /**
       * Add an array of named xmlrpcval objects to an xmlrpcval
       * @param array $vals
       * @return int 1 or 0 on failure
       * @access public
       *
       * @todo add some checking for $vals to be an array?
       */
       function addStruct($vals)
       {
          if($this->mytype==0)
          {
             $this->mytype=$GLOBALS['xmlrpcTypes']['struct'];
             $this->me['struct']=$vals;
             return 1;
          }
          elseif($this->mytype==3)
          {
             // we're adding to a struct here
             $this->me['struct'] = array_merge($this->me['struct'], $vals);
             return 1;
          }
          else
          {
             error_log('XML-RPC: xmlrpcval::addStruct: already initialized as a [' . $this->kindOf() . ']');
             return 0;
          }
       }
 
       // poor man's version of print_r ???
       // DEPRECATED!
       function dump($ar)
       {
          foreach($ar as $key => $val)
          {
             echo "$key => $val<br />";
             if($key == 'array')
             {
                while(list($key2, $val2) = each($val))
                {
                   echo "-- $key2 => $val2<br />";
                }
             }
          }
       }
 
       /**
       * Returns a string containing "struct", "array" or "scalar" describing the base type of the value
       * @return string
       * @access public
       */
       function kindOf()
       {
          switch($this->mytype)
          {
             case 3:
                return 'struct';
                break;
             case 2:
                return 'array';
                break;
             case 1:
                return 'scalar';
                break;
             default:
                return 'undef';
          }
       }
 
       /**
       * @access private
       */
       function serializedata($typ, $val, $charset_encoding='')
       {
          $rs='';
          switch(@$GLOBALS['xmlrpcTypes'][$typ])
          {
             case 1:
                switch($typ)
                {
                   case $GLOBALS['xmlrpcBase64']:
                      $rs.="<${typ}>" . base64_encode($val) . "</${typ}>";
                      break;
                   case $GLOBALS['xmlrpcBoolean']:
                      $rs.="<${typ}>" . ($val ? '1' : '0') . "</${typ}>";
                      break;
                   case $GLOBALS['xmlrpcString']:
                      // G. Giunta 2005/2/13: do NOT use htmlentities, since
                      // it will produce named html entities, which are invalid xml
                      $rs.="<${typ}>" . xmlrpc_encode_entitites($val, $GLOBALS['xmlrpc_internalencoding'], $charset_encoding). "</${typ}>";
                      break;
                   case $GLOBALS['xmlrpcInt']:
                   case $GLOBALS['xmlrpcI4']:
                      $rs.="<${typ}>".(int)$val."</${typ}>";
                      break;
                   case $GLOBALS['xmlrpcDouble']:
                      $rs.="<${typ}>".(double)$val."</${typ}>";
                      break;
                   case $GLOBALS['xmlrpcNull']:
                      $rs.="<nil/>";
                      break;
                   default:
                      // no standard type value should arrive here, but provide a possibility
                      // for xmlrpcvals of unknown type...
                      $rs.="<${typ}>${val}</${typ}>";
                }
                break;
             case 3:
                // struct
                if ($this->_php_class)
                {
                   $rs.='<struct php_class="' . $this->_php_class . "\">\n";
                }
                else
                {
                   $rs.="<struct>\n";
                }
                foreach($val as $key2 => $val2)
                {
                   $rs.='<member><name>'.xmlrpc_encode_entitites($key2, $GLOBALS['xmlrpc_internalencoding'], $charset_encoding)."</name>\n";
                   //$rs.=$this->serializeval($val2);
                   $rs.=$val2->serialize($charset_encoding);
                   $rs.="</member>\n";
                }
                $rs.='</struct>';
                break;
             case 2:
                // array
                $rs.="<array>\n<data>\n";
                for($i=0; $i<count($val); $i++)
                {
                   //$rs.=$this->serializeval($val[$i]);
                   $rs.=$val[$i]->serialize($charset_encoding);
                }
                $rs.="</data>\n</array>";
                break;
             default:
                break;
          }
          return $rs;
       }
 
       /**
       * Returns xml representation of the value. XML prologue not included
       * @param string $charset_encoding the charset to be used for serialization. if null, US-ASCII is assumed
       * @return string
       * @access public
       */
       function serialize($charset_encoding='')
       {
          // add check? slower, but helps to avoid recursion in serializing broken xmlrpcvals...
          //if (is_object($o) && (get_class($o) == 'xmlrpcval' || is_subclass_of($o, 'xmlrpcval')))
          //{
             reset($this->me);
             list($typ, $val) = each($this->me);
             return '<value>' . $this->serializedata($typ, $val, $charset_encoding) . "</value>\n";
          //}
       }
 
       // DEPRECATED
       function serializeval($o)
       {
          // add check? slower, but helps to avoid recursion in serializing broken xmlrpcvals...
          //if (is_object($o) && (get_class($o) == 'xmlrpcval' || is_subclass_of($o, 'xmlrpcval')))
          //{
             $ar=$o->me;
             reset($ar);
             list($typ, $val) = each($ar);
             return '<value>' . $this->serializedata($typ, $val) . "</value>\n";
          //}
       }
 
       /**
       * Checks wheter a struct member with a given name is present.
       * Works only on xmlrpcvals of type struct.
       * @param string $m the name of the struct member to be looked up
       * @return boolean
       * @access public
       */
       function structmemexists($m)
       {
          return array_key_exists($m, $this->me['struct']);
       }
 
       /**
       * Returns the value of a given struct member (an xmlrpcval object in itself).
       * Will raise a php warning if struct member of given name does not exist
       * @param string $m the name of the struct member to be looked up
       * @return xmlrpcval
       * @access public
       */
       function structmem($m)
       {
          return $this->me['struct'][$m];
       }
 
       /**
       * Reset internal pointer for xmlrpcvals of type struct.
       * @access public
       */
       function structreset()
       {
          reset($this->me['struct']);
       }
 
       /**
       * Return next member element for xmlrpcvals of type struct.
       * @return xmlrpcval
       * @access public
       */
       function structeach()
       {
          return each($this->me['struct']);
       }
 
       // DEPRECATED! this code looks like it is very fragile and has not been fixed
       // for a long long time. Shall we remove it for 2.0?
       function getval()
       {
          // UNSTABLE
          reset($this->me);
          list($a,$b)=each($this->me);
          // contributed by I Sofer, 2001-03-24
          // add support for nested arrays to scalarval
          // i've created a new method here, so as to
          // preserve back compatibility
 
          if(is_array($b))
          {
             @reset($b);
             while(list($id,$cont) = @each($b))
             {
                $b[$id] = $cont->scalarval();
             }
          }
 
          // add support for structures directly encoding php objects
          if(is_object($b))
          {
             $t = get_object_vars($b);
             @reset($t);
             while(list($id,$cont) = @each($t))
             {
                $t[$id] = $cont->scalarval();
             }
             @reset($t);
             while(list($id,$cont) = @each($t))
             {
                @$b->$id = $cont;
             }
          }
          // end contrib
          return $b;
       }
 
       /**
       * Returns the value of a scalar xmlrpcval
       * @return mixed
       * @access public
       */
       function scalarval()
       {
          reset($this->me);
          list(,$b)=each($this->me);
          return $b;
       }
 
       /**
       * Returns the type of the xmlrpcval.
       * For integers, 'int' is always returned in place of 'i4'
       * @return string
       * @access public
       */
       function scalartyp()
       {
          reset($this->me);
          list($a,)=each($this->me);
          if($a==$GLOBALS['xmlrpcI4'])
          {
             $a=$GLOBALS['xmlrpcInt'];
          }
          return $a;
       }
 
       /**
       * Returns the m-th member of an xmlrpcval of struct type
       * @param integer $m the index of the value to be retrieved (zero based)
       * @return xmlrpcval
       * @access public
       */
       function arraymem($m)
       {
          return $this->me['array'][$m];
       }
 
       /**
       * Returns the number of members in an xmlrpcval of array type
       * @return integer
       * @access public
       */
       function arraysize()
       {
          return count($this->me['array']);
       }
 
       /**
       * Returns the number of members in an xmlrpcval of struct type
       * @return integer
       * @access public
       */
       function structsize()
       {
          return count($this->me['struct']);
       }
    }
 
 
    // date helpers
 
    /**
    * Given a timestamp, return the corresponding ISO8601 encoded string.
    *
    * Really, timezones ought to be supported
    * but the XML-RPC spec says:
    *
    * "Don't assume a timezone. It should be specified by the server in its
    * documentation what assumptions it makes about timezones."
    *
    * These routines always assume localtime unless
    * $utc is set to 1, in which case UTC is assumed
    * and an adjustment for locale is made when encoding
    *
    * @param int $timet (timestamp)
    * @param int $utc (0 or 1)
    * @return string
    */
    function iso8601_encode($timet, $utc=0)
    {
       if(!$utc)
       {
          $t=strftime("%Y%m%dT%H:%M:%S", $timet);
       }
       else
       {
          if(function_exists('gmstrftime'))
          {
             // gmstrftime doesn't exist in some versions
             // of PHP
             $t=gmstrftime("%Y%m%dT%H:%M:%S", $timet);
          }
          else
          {
             $t=strftime("%Y%m%dT%H:%M:%S", $timet-date('Z'));
          }
       }
       return $t;
    }
 
    /**
    * Given an ISO8601 date string, return a timet in the localtime, or UTC
    * @param string $idate
    * @param int $utc either 0 or 1
    * @return int (datetime)
    */
    function iso8601_decode($idate, $utc=0)
    {
       $t=0;
       if(preg_match('/([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})/', $idate, $regs))
       {
          if($utc)
          {
             $t=gmmktime($regs[4], $regs[5], $regs[6], $regs[2], $regs[3], $regs[1]);
          }
          else
          {
             $t=mktime($regs[4], $regs[5], $regs[6], $regs[2], $regs[3], $regs[1]);
          }
       }
       return $t;
    }
 
    /**
    * Takes an xmlrpc value in PHP xmlrpcval object format and translates it into native PHP types.
    *
    * Works with xmlrpc message objects as input, too.
    *
    * Given proper options parameter, can rebuild generic php object instances
    * (provided those have been encoded to xmlrpc format using a corresponding
    * option in php_xmlrpc_encode())
    * PLEASE NOTE that rebuilding php objects involves calling their constructor function.
    * This means that the remote communication end can decide which php code will
    * get executed on your server, leaving the door possibly open to 'php-injection'
    * style of attacks (provided you have some classes defined on your server that
    * might wreak havoc if instances are built outside an appropriate context).
    * Make sure you trust the remote server/client before eanbling this!
    *
    * @author Dan Libby (dan@libby.com)
    *
    * @param xmlrpcval $xmlrpc_val
    * @param array $options if 'decode_php_objs' is set in the options array, xmlrpc structs can be decoded into php objects
    * @return mixed
    */
    function php_xmlrpc_decode($xmlrpc_val, $options=array())
    {
       switch($xmlrpc_val->kindOf())
       {
          case 'scalar':
             if (in_array('extension_api', $options))
             {
                reset($xmlrpc_val->me);
                list($typ,$val) = each($xmlrpc_val->me);
                switch ($typ)
                {
                   case 'dateTime.iso8601':
                      $xmlrpc_val->scalar = $val;
                      $xmlrpc_val->xmlrpc_type = 'datetime';
                      $xmlrpc_val->timestamp = iso8601_decode($val);
                      return $xmlrpc_val;
                   case 'base64':
                      $xmlrpc_val->scalar = $val;
                      $xmlrpc_val->type = $typ;
                      return $xmlrpc_val;
                   default:
                      return $xmlrpc_val->scalarval();
                }
             }
             return $xmlrpc_val->scalarval();
          case 'array':
             $size = $xmlrpc_val->arraysize();
             $arr = array();
             for($i = 0; $i < $size; $i++)
             {
                $arr[] = php_xmlrpc_decode($xmlrpc_val->arraymem($i), $options);
             }
             return $arr;
          case 'struct':
             $xmlrpc_val->structreset();
             // If user said so, try to rebuild php objects for specific struct vals.
             /// @todo should we raise a warning for class not found?
             // shall we check for proper subclass of xmlrpcval instead of
             // presence of _php_class to detect what we can do?
             if (in_array('decode_php_objs', $options) && $xmlrpc_val->_php_class != ''
                && class_exists($xmlrpc_val->_php_class))
             {
                $obj = @new $xmlrpc_val->_php_class;
                while(list($key,$value)=$xmlrpc_val->structeach())
                {
                   $obj->$key = php_xmlrpc_decode($value, $options);
                }
                return $obj;
             }
             else
             {
                $arr = array();
                while(list($key,$value)=$xmlrpc_val->structeach())
                {
                   $arr[$key] = php_xmlrpc_decode($value, $options);
                }
                return $arr;
             }
          case 'msg':
             $paramcount = $xmlrpc_val->getNumParams();
             $arr = array();
             for($i = 0; $i < $paramcount; $i++)
             {
                $arr[] = php_xmlrpc_decode($xmlrpc_val->getParam($i));
             }
             return $arr;
          }
    }
 
    // This constant left here only for historical reasons...
    // it was used to decide if we have to define xmlrpc_encode on our own, but
    // we do not do it anymore
    if(function_exists('xmlrpc_decode'))
    {
       define('XMLRPC_EPI_ENABLED','1');
    }
    else
    {
       define('XMLRPC_EPI_ENABLED','0');
    }
 
    /**
    * Takes native php types and encodes them into xmlrpc PHP object format.
    * It will not re-encode xmlrpcval objects.
    *
    * Feature creep -- could support more types via optional type argument
    * (string => datetime support has been added, ??? => base64 not yet)
    *
    * If given a proper options parameter, php object instances will be encoded
    * into 'special' xmlrpc values, that can later be decoded into php objects
    * by calling php_xmlrpc_decode() with a corresponding option
    *
    * @author Dan Libby (dan@libby.com)
    *
    * @param mixed $php_val the value to be converted into an xmlrpcval object
    * @param array $options can include 'encode_php_objs', 'auto_dates', 'null_extension' or 'extension_api'
    * @return xmlrpcval
    */
    function &php_xmlrpc_encode($php_val, $options=array())
    {
       $type = gettype($php_val);
       switch($type)
       {
          case 'string':
             if (in_array('auto_dates', $options) && preg_match('/^[0-9]{8}T[0-9]{2}:[0-9]{2}:[0-9]{2}$/', $php_val))
                $xmlrpc_val =& new xmlrpcval($php_val, $GLOBALS['xmlrpcDateTime']);
             else
                $xmlrpc_val =& new xmlrpcval($php_val, $GLOBALS['xmlrpcString']);
             break;
          case 'integer':
             $xmlrpc_val =& new xmlrpcval($php_val, $GLOBALS['xmlrpcInt']);
             break;
          case 'double':
             $xmlrpc_val =& new xmlrpcval($php_val, $GLOBALS['xmlrpcDouble']);
             break;
             // <G_Giunta_2001-02-29>
             // Add support for encoding/decoding of booleans, since they are supported in PHP
          case 'boolean':
             $xmlrpc_val =& new xmlrpcval($php_val, $GLOBALS['xmlrpcBoolean']);
             break;
             // </G_Giunta_2001-02-29>
          case 'array':
             // PHP arrays can be encoded to either xmlrpc structs or arrays,
             // depending on wheter they are hashes or plain 0..n integer indexed
             // A shorter one-liner would be
             // $tmp = array_diff(array_keys($php_val), range(0, count($php_val)-1));
             // but execution time skyrockets!
             $j = 0;
             $arr = array();
             $ko = false;
             foreach($php_val as $key => $val)
             {
                $arr[$key] =& php_xmlrpc_encode($val, $options);
                if(!$ko && $key !== $j)
                {
                   $ko = true;
                }
                $j++;
             }
             if($ko)
             {
                $xmlrpc_val =& new xmlrpcval($arr, $GLOBALS['xmlrpcStruct']);
             }
             else
             {
                $xmlrpc_val =& new xmlrpcval($arr, $GLOBALS['xmlrpcArray']);
             }
             break;
          case 'object':
             if(is_a($php_val, 'xmlrpcval'))
             {
                $xmlrpc_val = $php_val;
             }
             else
             {
                $arr = array();
                while(list($k,$v) = each($php_val))
                {
                   $arr[$k] = php_xmlrpc_encode($v, $options);
                }
                $xmlrpc_val =& new xmlrpcval($arr, $GLOBALS['xmlrpcStruct']);
                if (in_array('encode_php_objs', $options))
                {
                   // let's save original class name into xmlrpcval:
                   // might be useful later on...
                   $xmlrpc_val->_php_class = get_class($php_val);
                }
             }
             break;
          case 'NULL':
             if (in_array('extension_api', $options))
             {
                $xmlrpc_val =& new xmlrpcval('', $GLOBALS['xmlrpcString']);
             }
             if (in_array('null_extension', $options))
             {
                $xmlrpc_val =& new xmlrpcval('', $GLOBALS['xmlrpcNull']);
             }
             else
             {
                $xmlrpc_val =& new xmlrpcval();
             }
             break;
          case 'resource':
             if (in_array('extension_api', $options))
             {
                $xmlrpc_val =& new xmlrpcval((int)$php_val, $GLOBALS['xmlrpcInt']);
             }
             else
             {
                $xmlrpc_val =& new xmlrpcval();
             }
          // catch "user function", "unknown type"
          default:
             // giancarlo pinerolo <ping@alt.it>
             // it has to return
             // an empty object in case, not a boolean.
             $xmlrpc_val =& new xmlrpcval();
             break;
          }
          return $xmlrpc_val;
    }
 
    /**
    * Convert the xml representation of a method response, method request or single
    * xmlrpc value into the appropriate object (a.k.a. deserialize)
    * @param string $xml_val
    * @param array $options
    * @return mixed false on error, or an instance of either xmlrpcval, xmlrpcmsg or xmlrpcresp
    */
    function php_xmlrpc_decode_xml($xml_val, $options=array())
    {
       $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;
       $GLOBALS['_xh']['rt'] = '';
       /// @todo 'guestimate' encoding
       $parser = xml_parser_create();
       xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true);
       // What if internal encoding is not in one of the 3 allowed?
       // we use the broadest one, ie. utf8!
       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, $GLOBALS['xmlrpc_internalencoding']);
       }
       xml_set_element_handler($parser, 'xmlrpc_se_any', 'xmlrpc_ee');
       xml_set_character_data_handler($parser, 'xmlrpc_cd');
       xml_set_default_handler($parser, 'xmlrpc_dh');
       if(!xml_parse($parser, $xml_val, 1))
       {
          $errstr = sprintf('XML error: %s at line %d, column %d',
                   xml_error_string(xml_get_error_code($parser)),
                   xml_get_current_line_number($parser), xml_get_current_column_number($parser));
          error_log($errstr);
          xml_parser_free($parser);
          return false;
       }
       xml_parser_free($parser);
       if ($GLOBALS['_xh']['isf'] > 1) // test that $GLOBALS['_xh']['value'] is an obj, too???
       {
          error_log($GLOBALS['_xh']['isf_reason']);
          return false;
       }
       switch ($GLOBALS['_xh']['rt'])
       {
          case 'methodresponse':
             $v =& $GLOBALS['_xh']['value'];
             if ($GLOBALS['_xh']['isf'] == 1)
             {
                $vc = $v->structmem('faultCode');
                $vs = $v->structmem('faultString');
                $r =& new xmlrpcresp(0, $vc->scalarval(), $vs->scalarval());
             }
             else
             {
                $r =& new xmlrpcresp($v);
             }
             return $r;
          case 'methodcall':
             $m =& new xmlrpcmsg($GLOBALS['_xh']['method']);
             for($i=0; $i < count($GLOBALS['_xh']['params']); $i++)
             {
                $m->addParam($GLOBALS['_xh']['params'][$i]);
             }
             return $m;
          case 'value':
             return $GLOBALS['_xh']['value'];
          default:
             return false;
       }
    }
 
    /**
    * decode a string that is encoded w/ "chunked" transfer encoding
    * as defined in rfc2068 par. 19.4.6
    * code shamelessly stolen from nusoap library by Dietrich Ayala
    *
    * @param string $buffer the string to be decoded
    * @return string
    */
    function decode_chunked($buffer)
    {
       // length := 0
       $length = 0;
       $new = '';
 
       // read chunk-size, chunk-extension (if any) and crlf
       // get the position of the linebreak
       $chunkend = strpos($buffer,"\r\n") + 2;
       $temp = substr($buffer,0,$chunkend);
       $chunk_size = hexdec( trim($temp) );
       $chunkstart = $chunkend;
       while($chunk_size > 0)
       {
          $chunkend = strpos($buffer, "\r\n", $chunkstart + $chunk_size);
 
          // just in case we got a broken connection
          if($chunkend == false)
          {
             $chunk = substr($buffer,$chunkstart);
             // append chunk-data to entity-body
             $new .= $chunk;
             $length += strlen($chunk);
             break;
          }
 
          // read chunk-data and crlf
          $chunk = substr($buffer,$chunkstart,$chunkend-$chunkstart);
          // append chunk-data to entity-body
          $new .= $chunk;
          // length := length + chunk-size
          $length += strlen($chunk);
          // read chunk-size and crlf
          $chunkstart = $chunkend + 2;
 
          $chunkend = strpos($buffer,"\r\n",$chunkstart)+2;
          if($chunkend == false)
          {
             break; //just in case we got a broken connection
          }
          $temp = substr($buffer,$chunkstart,$chunkend-$chunkstart);
          $chunk_size = hexdec( trim($temp) );
          $chunkstart = $chunkend;
       }
       return $new;
    }
 
    /**
    * xml charset encoding guessing helper function.
    * Tries to determine the charset encoding of an XML chunk
    * received over HTTP.
    * NB: according to the spec (RFC 3023, if text/xml content-type is received over HTTP without a content-type,
    * we SHOULD assume it is strictly US-ASCII. But we try to be more tolerant of unconforming (legacy?) clients/servers,
    * which will be most probably using UTF-8 anyway...
    *
    * @param string $httpheaders the http Content-type header
    * @param string $xmlchunk xml content buffer
    * @param string $encoding_prefs comma separated list of character encodings to be used as default (when mb extension is enabled)
    *
    * @todo explore usage of mb_http_input(): does it detect http headers + post data? if so, use it instead of hand-detection!!!
    */
    function guess_encoding($httpheader='', $xmlchunk='', $encoding_prefs=null)
    {
       // discussion: see http://www.yale.edu/pclt/encoding/
       // 1 - test if encoding is specified in HTTP HEADERS
 
       //Details:
       // LWS:           (\13\10)?( |\t)+
       // token:         (any char but excluded stuff)+
       // header:        Content-type = ...; charset=value(; ...)*
       //   where value is of type token, no LWS allowed between 'charset' and value
       // Note: we do not check for invalid chars in VALUE:
       //   this had better be done using pure ereg as below
 
       /// @todo this test will pass if ANY header has charset specification, not only Content-Type. Fix it?
       $matches = array();
       if(preg_match('/;\s*charset=([^;]+)/i', $httpheader, $matches))
       {
          return strtoupper(trim($matches[1]));
       }
 
       // 2 - scan the first bytes of the data for a UTF-16 (or other) BOM pattern
       //     (source: http://www.w3.org/TR/2000/REC-xml-20001006)
       //     NOTE: actually, according to the spec, even if we find the BOM and determine
       //     an encoding, we should check if there is an encoding specified
       //     in the xml declaration, and verify if they match.
       /// @todo implement check as described above?
       /// @todo implement check for first bytes of string even without a BOM? (It sure looks harder than for cases WITH a BOM)
       if(preg_match('/^(\x00\x00\xFE\xFF|\xFF\xFE\x00\x00|\x00\x00\xFF\xFE|\xFE\xFF\x00\x00)/', $xmlchunk))
       {
          return 'UCS-4';
       }
       elseif(preg_match('/^(\xFE\xFF|\xFF\xFE)/', $xmlchunk))
       {
          return 'UTF-16';
       }
       elseif(preg_match('/^(\xEF\xBB\xBF)/', $xmlchunk))
       {
          return 'UTF-8';
       }
 
       // 3 - test if encoding is specified in the xml declaration
       // Details:
       // SPACE:         (#x20 | #x9 | #xD | #xA)+ === [ \x9\xD\xA]+
       // EQ:            SPACE?=SPACE? === [ \x9\xD\xA]*=[ \x9\xD\xA]*
       if (preg_match('/^<\?xml\s+version\s*=\s*'. "((?:\"[a-zA-Z0-9_.:-]+\")|(?:'[a-zA-Z0-9_.:-]+'))".
          '\s+encoding\s*=\s*' . "((?:\"[A-Za-z][A-Za-z0-9._-]*\")|(?:'[A-Za-z][A-Za-z0-9._-]*'))/",
          $xmlchunk, $matches))
       {
          return strtoupper(substr($matches[2], 1, -1));
       }
 
       // 4 - if mbstring is available, let it do the guesswork
       // NB: we favour finding an encoding that is compatible with what we can process
       if(extension_loaded('mbstring'))
       {
          if($encoding_prefs)
          {
             $enc = mb_detect_encoding($xmlchunk, $encoding_prefs);
          }
          else
          {
             $enc = mb_detect_encoding($xmlchunk);
          }
          // NB: mb_detect likes to call it ascii, xml parser likes to call it US_ASCII...
          // IANA also likes better US-ASCII, so go with it
          if($enc == 'ASCII')
          {
             $enc = 'US-'.$enc;
          }
          return $enc;
       }
       else
       {
          // no encoding specified: as per HTTP1.1 assume it is iso-8859-1?
          // Both RFC 2616 (HTTP 1.1) and 1945(http 1.0) clearly state that for text/xxx content types
          // this should be the standard. And we should be getting text/xml as request and response.
          // BUT we have to be backward compatible with the lib, which always used UTF-8 as default...
          return $GLOBALS['xmlrpc_defencoding'];
       }
    }
 
    /**
    * Checks if a given charset encoding is present in a list of encodings or
    * if it is a valid subset of any encoding in the list
    * @param string $encoding charset to be tested
    * @param mixed $validlist comma separated list of valid charsets (or array of charsets)
    */
    function is_valid_charset($encoding, $validlist)
    {
       $charset_supersets = array(
          'US-ASCII' => array ('ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4',
             'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8',
             'ISO-8859-9', 'ISO-8859-10', 'ISO-8859-11', 'ISO-8859-12',
             'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'UTF-8',
             'EUC-JP', 'EUC-', 'EUC-KR', 'EUC-CN')
       );
       if (is_string($validlist))
          $validlist = explode(',', $validlist);
       if (@in_array(strtoupper($encoding), $validlist))
          return true;
       else
       {
          if (array_key_exists($encoding, $charset_supersets))
             foreach ($validlist as $allowed)
                if (in_array($allowed, $charset_supersets[$encoding]))
                   return true;
             return false;
       }
    }
 
 ?>