xmlrpc.inc 29.6 KB
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<?php          // -*-c++-*-
// by Edd Dumbill (C) 1999-2001
// <edd@usefulinc.com>


// Copyright (c) 1999,2000,2001 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')) {
// Win 32 fix. From: "Leo West" <lwest@imaginet.fr>
  if($WINDIR) {
    dl("php3_xml.dll");
  } else {
    dl("xml.so");
  }
}

$xmlrpcI4="i4";
$xmlrpcInt="int";
$xmlrpcBoolean="boolean";
$xmlrpcDouble="double";
$xmlrpcString="string";
$xmlrpcDateTime="dateTime.iso8601";
$xmlrpcBase64="base64";
$xmlrpcArray="array";
$xmlrpcStruct="struct";


$xmlrpcTypes=array($xmlrpcI4 => 1,
           $xmlrpcInt => 1,
           $xmlrpcBoolean => 1,
           $xmlrpcString => 1,
           $xmlrpcDouble => 1,
           $xmlrpcDateTime => 1,
           $xmlrpcBase64 => 1,
           $xmlrpcArray => 2,
           $xmlrpcStruct => 3);

$xmlEntities=array(   "amp" => "&",
                   "quot" => '"',
                   "lt" => "<",
                   "gt" => ">",
                   "apos" => "'");

$xmlrpcerr["unknown_method"]=1;
$xmlrpcstr["unknown_method"]="Unknown method";
$xmlrpcerr["invalid_return"]=2;
$xmlrpcstr["invalid_return"]="Invalid return payload: enabling debugging to examine incoming payload";
$xmlrpcerr["incorrect_params"]=3;
$xmlrpcstr["incorrect_params"]="Incorrect parameters passed to method";
$xmlrpcerr["introspect_unknown"]=4;
$xmlrpcstr["introspect_unknown"]="Can't introspect: method unknown";
$xmlrpcerr["http_error"]=5;
$xmlrpcstr["http_error"]="Didn't receive 200 OK from remote server.";
$xmlrpcerr["no_data"]=6;
$xmlrpcstr["no_data"]="No data received from server.";
$xmlrpcerr["no_ssl"]=7;
$xmlrpcstr["no_ssl"]="No SSL support compiled in.";
$xmlrpcerr["curl_fail"]=8;
$xmlrpcstr["curl_fail"]="CURL error";

$xmlrpc_defencoding="UTF-8";

$xmlrpcName="XML-RPC for PHP";
$xmlrpcVersion="1.02";

// let user errors start at 800
$xmlrpcerruser=800;
// let XML parse errors start at 100
$xmlrpcerrxml=100;

// formulate backslashes for escaping regexp
$xmlrpc_backslash=chr(92).chr(92);

// used to store state during parsing
// quick explanation of components:
//   st - used to build up a string for evaluation
//   ac - used to accumulate values
//   qt - used to decide if quotes are needed for evaluation
//   cm - used to denote struct or array (comma needed)
//   isf - used to indicate a fault
//   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

$_xh=array();

function xmlrpc_entity_decode($string) {
  $top=split("&", $string);
  $op="";
  $i=0;
  while($i<sizeof($top)) {
  if (ereg("^([#a-zA-Z0-9]+);", $top[$i], $regs)) {
    $op.=ereg_replace("^[#a-zA-Z0-9]+;",
            xmlrpc_lookup_entity($regs[1]),
                      $top[$i]);
  } else {
    if ($i==0)
    $op=$top[$i];
    else
    $op.="&" . $top[$i];
  }
  $i++;
  }
  return $op;
}

function xmlrpc_lookup_entity($ent) {
  global $xmlEntities;

  if (isset($xmlEntities[strtolower($ent)]))
  return $xmlEntities[strtolower($ent)];
  if (ereg("^#([0-9]+)$", $ent, $regs))
  return chr($regs[1]);
  return "?";
}

function xmlrpc_se($parser, $name, $attrs) {
  global $_xh, $xmlrpcDateTime, $xmlrpcString;

  switch($name) {
  case "STRUCT":
  case "ARRAY":
    $_xh[$parser]['st'].="array(";
    $_xh[$parser]['cm']++;
    // this last line turns quoting off
    // this means if we get an empty array we'll
    // simply get a bit of whitespace in the eval
    $_xh[$parser]['qt']=0;
    break;
  case "NAME":
    $_xh[$parser]['st'].="'"; $_xh[$parser]['ac']="";
    break;
  case "FAULT":
    $_xh[$parser]['isf']=1;
    break;
  case "PARAM":
    $_xh[$parser]['st']="";
    break;
  case "VALUE":
    $_xh[$parser]['st'].="new xmlrpcval(";
    $_xh[$parser]['vt']=$xmlrpcString;
    $_xh[$parser]['ac']="";
    $_xh[$parser]['qt']=0;
    $_xh[$parser]['lv']=1;
    // look for a value: if this is still 1 by the
    // time we reach the first data segment then the type is string
    // by implication and we need to add in a quote
    break;

  case "I4":
  case "INT":
  case "STRING":
  case "BOOLEAN":
  case "DOUBLE":
  case "DATETIME.ISO8601":
  case "BASE64":
    $_xh[$parser]['ac']=""; // reset the accumulator

    if ($name=="DATETIME.ISO8601" || $name=="STRING") {
      $_xh[$parser]['qt']=1;
      if ($name=="DATETIME.ISO8601")
        $_xh[$parser]['vt']=$xmlrpcDateTime;
    } else if ($name=="BASE64") {
      $_xh[$parser]['qt']=2;
    } else {
      // No quoting is required here -- but
      // at the end of the element we must check
      // for data format errors.
      $_xh[$parser]['qt']=0;
    }
    break;
  case "MEMBER":
    $_xh[$parser]['ac']="";
    break;
  default:
    break;
  }

  if ($name!="VALUE") $_xh[$parser]['lv']=0;
}

function xmlrpc_ee($parser, $name) {
  global $_xh,$xmlrpcTypes,$xmlrpcString;

  switch($name) {
  case "STRUCT":
  case "ARRAY":
    if ($_xh[$parser]['cm'] && substr($_xh[$parser]['st'], -1) ==',') {
    $_xh[$parser]['st']=substr($_xh[$parser]['st'],0,-1);
    }
    $_xh[$parser]['st'].=")";
    $_xh[$parser]['vt']=strtolower($name);
    $_xh[$parser]['cm']--;
    break;
  case "NAME":
    $_xh[$parser]['st'].= $_xh[$parser]['ac'] . "' => ";
    break;
  case "BOOLEAN":
    // special case here: we translate boolean 1 or 0 into PHP
    // constants true or false
    if ($_xh[$parser]['ac']=='1')
      $_xh[$parser]['ac']="true";
    else
      $_xh[$parser]['ac']="false";
    $_xh[$parser]['vt']=strtolower($name);
    // Drop through intentionally.
  case "I4":
  case "INT":
  case "STRING":
  case "DOUBLE":
  case "DATETIME.ISO8601":
  case "BASE64":
    if ($_xh[$parser]['qt']==1) {
      // we use double quotes rather than single so backslashification works OK
      $_xh[$parser]['st'].="\"". $_xh[$parser]['ac'] . "\"";
    } else if ($_xh[$parser]['qt']==2) {
      $_xh[$parser]['st'].="base64_decode('". $_xh[$parser]['ac'] . "')";
    } else if ($name=="BOOLEAN") {
      $_xh[$parser]['st'].=$_xh[$parser]['ac'];
    } else {
      // we have an I4, INT or a DOUBLE
      // we must check that only 0123456789-.<space> are characters here
      if (!ereg("^\-?[0123456789 \t\.]+$", $_xh[$parser]['ac'])) {
        // TODO: find a better way of throwing an error
        // than this!
        error_log("XML-RPC: non numeric value received in INT or DOUBLE");
        $_xh[$parser]['st'].="ERROR_NON_NUMERIC_FOUND";
      } else {
        // it's ok, add it on
        $_xh[$parser]['st'].=$_xh[$parser]['ac'];
      }
    }
    $_xh[$parser]['ac']=""; $_xh[$parser]['qt']=0;
    $_xh[$parser]['lv']=3; // indicate we've found a value
    break;
  case "VALUE":
    // deal with a string value
    if (strlen($_xh[$parser]['ac'])>0 &&
        $_xh[$parser]['vt']==$xmlrpcString) {
      $_xh[$parser]['st'].="\"". $_xh[$parser]['ac'] . "\"";
    }
    // This if() detects if no scalar was inside <VALUE></VALUE>
    // and pads an empty "".
    if($_xh[$parser]['st'][strlen($_xh[$parser]['st'])-1] == '(') {
      $_xh[$parser]['st'].= '""';
    }
    $_xh[$parser]['st'].=", '" . $_xh[$parser]['vt'] . "')";
    if ($_xh[$parser]['cm']) $_xh[$parser]['st'].=",";
    break;
  case "MEMBER":
    $_xh[$parser]['ac']=""; $_xh[$parser]['qt']=0;
   break;
  case "DATA":
    $_xh[$parser]['ac']=""; $_xh[$parser]['qt']=0;
    break;
  case "PARAM":
    $_xh[$parser]['params'][]=$_xh[$parser]['st'];
    break;
  case "METHODNAME":
    $_xh[$parser]['method']=ereg_replace("^[\n\r\t ]+", "",
                                         $_xh[$parser]['ac']);
    break;
  case "BOOLEAN":
    // special case here: we translate boolean 1 or 0 into PHP
    // constants true or false
    if ($_xh[$parser]['ac']=='1')
      $_xh[$parser]['ac']="true";
    else
      $_xh[$parser]['ac']="false";
    $_xh[$parser]['vt']=strtolower($name);
    break;
  default:
    break;
  }
  // if it's a valid type name, set the type
  if (isset($xmlrpcTypes[strtolower($name)])) {
    $_xh[$parser]['vt']=strtolower($name);
  }

}

function xmlrpc_cd($parser, $data)
{
  global $_xh, $xmlrpc_backslash;

  //if (ereg("^[\n\r \t]+$", $data)) return;
  // print "adding [${data}]\n";

  if ($_xh[$parser]['lv']!=3) {
    // "lookforvalue==3" means that we've found an entire value
    // and should discard any further character data
    if ($_xh[$parser]['lv']==1) {
      // if we've found text and we're just in a <value> then
      // turn quoting on, as this will be a string
      $_xh[$parser]['qt']=1;
      // and say we've found a value
      $_xh[$parser]['lv']=2;
    }
  // replace characters that eval would
  // do special things with
  $_xh[$parser]['ac'].=str_replace('$', '\$',
    str_replace('"', '\"', str_replace(chr(92),
      $xmlrpc_backslash, $data)));
  }
}

function xmlrpc_dh($parser, $data)
{
  global $_xh;
  if (substr($data, 0, 1) == "&" && substr($data, -1, 1) == ";") {
    if ($_xh[$parser]['lv']==1) {
      $_xh[$parser]['qt']=1;
      $_xh[$parser]['lv']=2;
    }
    $_xh[$parser]['ac'].=str_replace('$', '\$',
        str_replace('"', '\"', str_replace(chr(92),
          $xmlrpc_backslash, $data)));
  }
}

class xmlrpc_client {
  var $path;
  var $server;
  var $port;
  var $errno;
  var $errstring;
  var $debug=0;
  var $username="";
  var $password="";
  var $cert="";
  var $certpass="";

  function xmlrpc_client($path, $server, $port=0) {
    $this->port=$port; $this->server=$server; $this->path=$path;
  }

  function setDebug($in) {
    if ($in) {
      $this->debug=1;
    } else {
      $this->debug=0;
    }
  }

  function setCredentials($u, $p) {
    $this->username=$u;
    $this->password=$p;
  }

  function setCertificate($cert, $certpass) {
    $this->cert = $cert;
    $this->certpass = $certpass;
  }

  function send($msg, $timeout=0, $method='http') {
    // where msg is an xmlrpcmsg
    $msg->debug=$this->debug;

    if ($method == 'https') {
      return $this->sendPayloadHTTPS($msg,
             $this->server,
             $this->port, $timeout,
             $this->username, $this->password,
             $this->cert,
             $this->certpass);
    } else {
      return $this->sendPayloadHTTP10($msg, $this->server, $this->port,
              $timeout, $this->username,
              $this->password);
    }
  }

  function sendPayloadHTTP10($msg, $server, $port, $timeout=0,
           $username="", $password="") {
    if ($port==0) $port=80;
    if($timeout>0)
      $fp=fsockopen($server, $port,
409
        $this->errno, $this->errstr, $timeout);
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    else
      $fp=fsockopen($server, $port,
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        $this->errno, $this->errstr);
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    if (!$fp) {
      return 0;
    }
    // Only create the payload if it was not created previously
    if(empty($msg->payload)) $msg->createPayload();

    // thanks to Grant Rauscher <grant7@firstworld.net>
    // for this
    $credentials="";
    if ($username!="") {
      $credentials="Authorization: Basic " .
  base64_encode($username . ":" . $password) . "\r\n";
    }

    $op= "POST " . $this->path. " HTTP/1.0\r\nUser-Agent: PHP XMLRPC 1.0\r\n" .
      "Host: ". $this->server  . "\r\n" .
      $credentials .
      "Content-Type: text/xml\r\nContent-Length: " .
      strlen($msg->payload) . "\r\n\r\n" .
      $msg->payload;

    if (!fputs($fp, $op, strlen($op))) {
      $this->errstr="Write error";
      return 0;
    }
    $resp=$msg->parseResponseFile($fp);
    fclose($fp);
    return $resp;
  }

  // contributed by Justin Miller <justin@voxel.net>
  // requires curl to be built into PHP
  function sendPayloadHTTPS($msg, $server, $port, $timeout=0,
          $username="", $password="", $cert="",
          $certpass="") {
    global $xmlrpcerr, $xmlrpcstr;
    if ($port == 0) $port = 443;

    // Only create the payload if it was not created previously
    if(empty($msg->payload)) $msg->createPayload();

    if (!function_exists("curl_init")) {
      $r=new xmlrpcresp(0, $xmlrpcerr["no_ssl"],
      $xmlrpcstr["no_ssl"]);
      return $r;
    }

    $curl = curl_init("https://" . $server . ':' . $port .
          $this->path);

    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    // results into variable
    if ($this->debug) {
      curl_setopt($curl, CURLOPT_VERBOSE, 1);
    }
    curl_setopt($curl, CURLOPT_USERAGENT, 'PHP XMLRPC 1.0');
    // required for XMLRPC
    curl_setopt($curl, CURLOPT_POST, 1);
    // post the data
    curl_setopt($curl, CURLOPT_POSTFIELDS, $msg->payload);
    // the data
    curl_setopt($curl, CURLOPT_HEADER, 1);
    // return the header too
    curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/xml'));
    // required for XMLRPC
    if ($timeout) curl_setopt($curl, CURLOPT_TIMEOUT, $timeout == 1 ? 1 :
            $timeout - 1);
    // timeout is borked
    if ($username && $password) curl_setopt($curl, CURLOPT_USERPWD,
              "$username:$password");
    // set auth stuff
    if ($cert) curl_setopt($curl, CURLOPT_SSLCERT, $cert);
    // set cert file
    if ($certpass) curl_setopt($curl, CURLOPT_SSLCERTPASSWD,
               $certpass);
    // set cert password

    $result = curl_exec($curl);

    if (!$result) {
      $resp=new xmlrpcresp(0,
         $xmlrpcerr["curl_fail"],
         $xmlrpcstr["curl_fail"]. ": ".
         curl_error($curl));
    } else {
      $resp = $msg->parseResponse($result);
    }
    curl_close($curl);
    return $resp;
  }

} // end class xmlrpc_client

class xmlrpcresp {
  var $xv;
  var $fn;
  var $fs;
  var $hdrs;

  function xmlrpcresp($val, $fcode=0, $fstr="") {
    if ($fcode!=0) {
      $this->xv=0;
      $this->fn=$fcode;
      $this->fs=htmlspecialchars($fstr);
    } else {
      $this->xv=$val;
      $this->fn=0;
    }
  }

  function faultCode() {
    if (isset($this->fn))
      return $this->fn;
    else
      return 0;
  }

  function faultString() { return $this->fs; }
  function value() { return $this->xv; }

  function serialize() {
  $rs="<methodResponse>\n";
  if ($this->fn) {
    $rs.="<fault>
  <value>
    <struct>
      <member>
        <name>faultCode</name>
        <value><int>" . $this->fn . "</int></value>
      </member>
      <member>
        <name>faultString</name>
        <value><string>" . $this->fs . "</string></value>
      </member>
    </struct>
  </value>
</fault>";
  } else {
    $rs.="<params>\n<param>\n" . $this->xv->serialize() .
    "</param>\n</params>";
  }
  $rs.="\n</methodResponse>";
  return $rs;
  }
}

class xmlrpcmsg {
  var $payload;
  var $methodname;
  var $params=array();
  var $debug=0;

  function xmlrpcmsg($meth, $pars=0) {
    $this->methodname=$meth;
    if (is_array($pars) && sizeof($pars)>0) {
      for($i=0; $i<sizeof($pars); $i++)
        $this->addParam($pars[$i]);
    }
  }

  function xml_header() {
  return "<?xml version=\"1.0\"?>\n<methodCall>\n";
  }

  function xml_footer() {
  return "</methodCall>\n";
  }

  function createPayload() {
  $this->payload=$this->xml_header();
  $this->payload.="<methodName>" . $this->methodname . "</methodName>\n";
  //  if (sizeof($this->params)) {
    $this->payload.="<params>\n";
    for($i=0; $i<sizeof($this->params); $i++) {
    $p=$this->params[$i];
    $this->payload.="<param>\n" . $p->serialize() .
      "</param>\n";
    }
    $this->payload.="</params>\n";
  // }
  $this->payload.=$this->xml_footer();
  $this->payload=str_replace("\n", "\r\n", $this->payload);
  }

  function method($meth="") {
  if ($meth!="") {
    $this->methodname=$meth;
  }
  return $this->methodname;
  }

  function serialize() {
    $this->createPayload();
    return $this->payload;
  }

  function addParam($par) { $this->params[]=$par; }
  function getParam($i) { return $this->params[$i]; }
  function getNumParams() { return sizeof($this->params); }

  function parseResponseFile($fp) {
  $ipd="";

  while($data=fread($fp, 32768)) {
    $ipd.=$data;
  }
  return $this->parseResponse($ipd);
  }

  function parseResponse($data="") {
  global $_xh,$xmlrpcerr,$xmlrpcstr;
  global $xmlrpc_defencoding;


  $parser = xml_parser_create($xmlrpc_defencoding);

  $_xh[$parser]=array();

  $_xh[$parser]['st']="";
  $_xh[$parser]['cm']=0;
  $_xh[$parser]['isf']=0;
  $_xh[$parser]['ac']="";
  $_xh[$parser]['qt']="";
  $_xh[$parser]['ha']="";
  $_xh[$parser]['ac']="";

  xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true);
  xml_set_element_handler($parser, "xmlrpc_se", "xmlrpc_ee");
  xml_set_character_data_handler($parser, "xmlrpc_cd");
  xml_set_default_handler($parser, "xmlrpc_dh");
  $xmlrpc_value=new xmlrpcval;

  if ($this->debug)
    print "<PRE>---GOT---\n" . htmlspecialchars($data) .
    "\n---END---\n</PRE>";
  if ($data=="") {
    error_log("No response received from server.");
    $r=new xmlrpcresp(0, $xmlrpcerr["no_data"],
          $xmlrpcstr["no_data"]);
    xml_parser_free($parser);
    return $r;
  }
  // see if we got an HTTP 200 OK, else bomb
  // but only do this if we're using the HTTP protocol.
  if (ereg("^HTTP",$data) &&
      !ereg("^HTTP/[0-9\.]+ 200 ", $data)) {
    $errstr= substr($data, 0, strpos($data, "\n")-1);
    error_log("HTTP error, got response: " .$errstr);
    $r=new xmlrpcresp(0, $xmlrpcerr["http_error"],
          $xmlrpcstr["http_error"]. " (" . $errstr . ")");
    xml_parser_free($parser);
    return $r;
  }

  // if using HTTP, then gotta get rid of HTTP headers here
  // and we store them in the 'ha' bit of our data array
  if (ereg("^HTTP", $data)) {
    $ar=explode("\r\n", $data);
    $newdata="";
    $hdrfnd=0;
    for ($i=0; $i<sizeof($ar); $i++) {
      if (!$hdrfnd) {
        if (strlen($ar[$i])>0) {
          $_xh[$parser]['ha'].=$ar[$i]. "\r\n";
        } else {
          $hdrfnd=1;
        }
      } else {
        $newdata.=$ar[$i] . "\r\n";
      }
    }
    $data=$newdata;
  }

  if (!xml_parse($parser, $data, sizeof($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
      $errstr = sprintf("XML error: %s at line %d",
                        xml_error_string(xml_get_error_code($parser)),
                        xml_get_current_line_number($parser));
    error_log($errstr);
    $r=new xmlrpcresp(0, $xmlrpcerr["invalid_return"],
                      $xmlrpcstr["invalid_return"]);
    xml_parser_free($parser);
    return $r;
  }
  xml_parser_free($parser);
  if ($this->debug) {
    print "<PRE>---EVALING---[" .
    strlen($_xh[$parser]['st']) . " chars]---\n" .
    htmlspecialchars($_xh[$parser]['st']) . ";\n---END---</PRE>";
  }
  if (strlen($_xh[$parser]['st'])==0) {
    // then something odd has happened
    // and it's time to generate a client side error
    // indicating something odd went on
    $r=new xmlrpcresp(0, $xmlrpcerr["invalid_return"],
            $xmlrpcstr["invalid_return"]);
  } else {
    eval('$v=' . $_xh[$parser]['st'] . '; $allOK=1;');
    if ($_xh[$parser]['isf']) {
    $f=$v->structmem("faultCode");
    $fs=$v->structmem("faultString");
    $r=new xmlrpcresp($v, $f->scalarval(),
              $fs->scalarval());
    } else {
    $r=new xmlrpcresp($v);
    }
  }
  $r->hdrs=split("\r?\n", $_xh[$parser]['ha']);
  return $r;
  }

}

class xmlrpcval {
  var $me=array();
  var $mytype=0;

  function xmlrpcval($val=-1, $type="") {
    global $xmlrpcTypes;
    $this->me=array();
    $this->mytype=0;
    if ($val!=-1 || $type!="") {
      if ($type=="") $type="string";
      if ($xmlrpcTypes[$type]==1) {
        $this->addScalar($val,$type);
      }
    else if ($xmlrpcTypes[$type]==2)
      $this->addArray($val);
      else if ($xmlrpcTypes[$type]==3)
        $this->addStruct($val);
    }
  }

  function addScalar($val, $type="string") {
    global $xmlrpcTypes, $xmlrpcBoolean;

    if ($this->mytype==1) {
      echo "<B>xmlrpcval</B>: scalar can have only one value<BR>";
      return 0;
    }
    $typeof=$xmlrpcTypes[$type];
    if ($typeof!=1) {
      echo "<B>xmlrpcval</B>: not a scalar type (${typeof})<BR>";
      return 0;
    }

    if ($type==$xmlrpcBoolean) {
      if (strcasecmp($val,"true")==0 ||
          $val==1 || ($val==true &&
                      strcasecmp($val,"false"))) {
        $val=1;
      } else {
        $val=0;
      }
    }

    if ($this->mytype==2) {
      // we're adding to an array here
      $ar=$this->me["array"];
      $ar[]=new xmlrpcval($val, $type);
      $this->me["array"]=$ar;
    } else {
      // a scalar, so set the value and remember we're scalar
      $this->me[$type]=$val;
      $this->mytype=$typeof;
    }
    return 1;
  }

  function addArray($vals) {
    global $xmlrpcTypes;
    if ($this->mytype!=0) {
      echo "<B>xmlrpcval</B>: already initialized as a [" .
        $this->kindOf() . "]<BR>";
      return 0;
    }

    $this->mytype=$xmlrpcTypes["array"];
    $this->me["array"]=$vals;
    return 1;
  }

  function addStruct($vals) {
  global $xmlrpcTypes;
  if ($this->mytype!=0) {
    echo "<B>xmlrpcval</B>: already initialized as a [" .
    $this->kindOf() . "]<BR>";
    return 0;
  }
  $this->mytype=$xmlrpcTypes["struct"];
  $this->me["struct"]=$vals;
  return 1;
  }

  function dump($ar) {
  reset($ar);
  while ( list( $key, $val ) = each( $ar ) ) {
    echo "$key => $val<br>";
    if ($key == 'array')
    while ( list( $key2, $val2 ) = each( $val ) ) {
      echo "-- $key2 => $val2<br>";
    }
  }
  }

  function kindOf() {
  switch($this->mytype) {
  case 3:
    return "struct";
    break;
  case 2:
    return "array";
    break;
  case 1:
    return "scalar";
    break;
  default:
    return "undef";
  }
  }

  function serializedata($typ, $val) {
    $rs="";
    global $xmlrpcTypes, $xmlrpcBase64, $xmlrpcString,
      $xmlrpcBoolean;
    switch($xmlrpcTypes[$typ]) {
    case 3:
      // struct
      $rs.="<struct>\n";
      reset($val);
      while(list($key2, $val2)=each($val)) {
        $rs.="<member><name>${key2}</name>\n";
        $rs.=$this->serializeval($val2);
        $rs.="</member>\n";
      }
      $rs.="</struct>";
      break;
    case 2:
      // array
      $rs.="<array>\n<data>\n";
      for($i=0; $i<sizeof($val); $i++) {
        $rs.=$this->serializeval($val[$i]);
      }
      $rs.="</data>\n</array>";
      break;
    case 1:
      switch ($typ) {
      case $xmlrpcBase64:
        $rs.="<${typ}>" . base64_encode($val) . "</${typ}>";
        break;
      case $xmlrpcBoolean:
        $rs.="<${typ}>" . ($val ? "1" : "0") . "</${typ}>";
          break;
      case $xmlrpcString:
        $rs.="<${typ}>" . htmlspecialchars($val). "</${typ}>";
        break;
      default:
        $rs.="<${typ}>${val}</${typ}>";
      }
      break;
    default:
      break;
    }
    return $rs;
  }

  function serialize() {
  return $this->serializeval($this);
  }

  function serializeval($o) {
    global $xmlrpcTypes;
    $rs="";
    $ar=$o->me;
    reset($ar);
    list($typ, $val) = each($ar);
    $rs.="<value>";
    $rs.=$this->serializedata($typ, $val);
    $rs.="</value>\n";
    return $rs;
  }

  function structmem($m) {
    $nv=$this->me["struct"][$m];
    return $nv;
  }

  function structreset() {
    reset($this->me["struct"]);
  }

  function structeach() {
    return each($this->me["struct"]);
  }

  function getval() {
    // UNSTABLE
    global $xmlrpcBoolean, $xmlrpcBase64;
    reset($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($b))    {
      foreach ($b as $id => $cont) {
        $b[$id] = $cont->scalarval();
      }
    }

    // add support for structures directly encoding php objects
    if (is_object($b))  {
      $t = get_object_vars($b);
      foreach ($t as $id => $cont) {
        $t[$id] = $cont->scalarval();
      }
      foreach ($t as $id => $cont) {
        eval('$b->'.$id.' = $cont;');
      }
    }
    // end contrib
    return $b;
  }

  function scalarval() {
    global $xmlrpcBoolean, $xmlrpcBase64;
    reset($this->me);
    list($a,$b)=each($this->me);
    return $b;
  }

  function scalartyp() {
    global $xmlrpcI4, $xmlrpcInt;
    reset($this->me);
    list($a,$b)=each($this->me);
    if ($a==$xmlrpcI4)
      $a=$xmlrpcInt;
    return $a;
  }

  function arraymem($m) {
    $nv=$this->me["array"][$m];
    return $nv;
  }

  function arraysize() {
    reset($this->me);
    list($a,$b)=each($this->me);
    return sizeof($b);
  }
}

// date helpers
function iso8601_encode($timet, $utc=0) {
  // return an 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
  // $utc is set to 1, in which case UTC is assumed
  // and an adjustment for locale is made when encoding
  if (!$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;
}

function iso8601_decode($idate, $utc=0) {
  // return a timet in the localtime, or UTC
  $t=0;
  if (ereg("([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;
}

/****************************************************************
* xmlrpc_decode takes a message in PHP xmlrpc object format and *
* tranlates it into native PHP types.                           *
*                                                               *
* author: Dan Libby (dan@libby.com)                             *
****************************************************************/
function xmlrpc_decode($xmlrpc_val) {
   $kind = $xmlrpc_val->kindOf();

   if($kind == "scalar") {
      return $xmlrpc_val->scalarval();
   }
   else if($kind == "array") {
      $size = $xmlrpc_val->arraysize();
      $arr = array();

      for($i = 0; $i < $size; $i++) {
         $arr[]=xmlrpc_decode($xmlrpc_val->arraymem($i));
      }
      return $arr;
   }
   else if($kind == "struct") {
      $xmlrpc_val->structreset();
      $arr = array();

      while(list($key,$value)=$xmlrpc_val->structeach()) {
         $arr[$key] = xmlrpc_decode($value);
      }
      return $arr;
   }
}

/****************************************************************
* xmlrpc_encode takes native php types and encodes them into    *
* xmlrpc PHP object format.                                     *
* BUG: All sequential arrays are turned into structs.  I don't  *
* know of a good way to determine if an array is sequential     *
* only.                                                         *
*                                                               *
* feature creep -- could support more types via optional type   *
* argument.                                                     *
*                                                               *
* author: Dan Libby (dan@libby.com)                             *
****************************************************************/
function xmlrpc_encode($php_val) {
   global $xmlrpcInt;
   global $xmlrpcDouble;
   global $xmlrpcString;
   global $xmlrpcArray;
   global $xmlrpcStruct;
   global $xmlrpcBoolean;

   $type = gettype($php_val);
   $xmlrpc_val = new xmlrpcval;

   switch($type) {
      case "array":
      case "object":
         $arr = array();
         while (list($k,$v) = each($php_val)) {
            $arr[$k] = xmlrpc_encode($v);
         }
         $xmlrpc_val->addStruct($arr);
         break;
      case "integer":
         $xmlrpc_val->addScalar($php_val, $xmlrpcInt);
         break;
      case "double":
         $xmlrpc_val->addScalar($php_val, $xmlrpcDouble);
         break;
      case "string":
         $xmlrpc_val->addScalar($php_val, $xmlrpcString);
         break;
// <G_Giunta_2001-02-29>
// Add support for encoding/decoding of booleans, since they are supported in PHP
      case "boolean":
         $xmlrpc_val->addScalar($php_val, $xmlrpcBoolean);
         break;
// </G_Giunta_2001-02-29>
      case "unknown type":
      default:
  // giancarlo pinerolo <ping@alt.it>
  // it has to return
        // an empty object in case (which is already
  // at this point), not a boolean.
  break;
   }
   return $xmlrpc_val;
}

?>