From 1b7510eebf0da114677408674e552201ff0711c9 Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Sun, 9 Sep 2001 16:47:10 +0000
Subject: - Added an XML-RPC server.  Modules that want to export remote
 procedure   calls can implement the new 'xmlrpc' hook.

  Example:

   function mymodule_xmlrpc() {
     return array("drupal.myfunction" => array("function" => "mymodule_myfunction"));
   }
---
 includes/xmlrpc.inc  | 973 +++++++++++++++++++++++++++++++++++++++++++++++++++
 includes/xmlrpcs.inc | 287 +++++++++++++++
 xmlrpc.php           |  16 +
 3 files changed, 1276 insertions(+)
 create mode 100644 includes/xmlrpc.inc
 create mode 100644 includes/xmlrpcs.inc
 create mode 100644 xmlrpc.php

diff --git a/includes/xmlrpc.inc b/includes/xmlrpc.inc
new file mode 100644
index 000000000..f659f3a3a
--- /dev/null
+++ b/includes/xmlrpc.inc
@@ -0,0 +1,973 @@
+<?php          // -*-c++-*-
+// by Edd Dumbill (C) 1999-2001
+// <edd@usefulinc.com>
+// $Id$
+
+// License is granted to use or modify this software ("XML-RPC for PHP")
+// for commercial or non-commercial use provided the copyright of the author
+// is preserved in any distributed or derivative work.
+
+// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED 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 AUTHOR 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.";
+
+$xmlrpc_defencoding="UTF-8";
+
+$xmlrpcName="XML-RPC for PHP";
+$xmlrpcVersion="1.0b9";
+
+// let user errors start at 800
+$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;
+    }
+    if (isset($_xh[$parser]['qt']) &&
+        $_xh[$parser]['qt']) {
+      // quoted string: replace characters that eval would
+      // do special things with
+      $_xh[$parser]['ac'].=str_replace('$', '\$',
+                                       str_replace('"', '\"',
+                                      str_replace(chr(92),$xmlrpc_backslash, $data)));
+    }
+    else
+      $_xh[$parser]['ac'].=$data;
+  }
+}
+
+function xmlrpc_dh($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'].=$data;
+  }
+}
+
+class xmlrpc_client {
+  var $path;
+  var $server;
+  var $port;
+  var $errno;
+  var $errstring;
+  var $debug=0;
+  var $username="";
+  var $password="";
+
+  function xmlrpc_client($path, $server, $port=80) {
+    $this->port=$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 send($msg, $timeout=0) {
+    // where msg is an xmlrpcmsg
+    $msg->debug=$this->debug;
+    return $this->sendPayloadHTTP10($msg, $this->server, $this->port,
+                                    $timeout, $this->username,
+                                    $this->password);
+  }
+
+  function sendPayloadHTTP10($msg, $server, $port, $timeout=0,
+                             $username="", $password="") {
+    if($timeout>0)
+      $fp=fsockopen($server, $port,
+                    &$this->errno, &$this->errstr, $timeout);
+    else
+      $fp=fsockopen($server, $port,
+                    &$this->errno, &$this->errstr);
+    if (!$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;
+  }
+
+} // end class xmlrpc_client
+
+class xmlrpcresp {
+  var $xv;
+  var $fn;
+  var $fs;
+  var $hdrs;
+
+  function xmlrpcresp($val, $fcode=0, $fstr="") {
+    if ($fcode!=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']="";
+
+  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;
+
+  $hdrfnd=0;
+  if ($this->debug)
+    print "<PRE>---GOT---\n" . htmlspecialchars($data) .
+    "\n---END---\n</PRE>";
+  // see if we got an HTTP 200 OK, else bomb
+  // but only do this if we're using the HTTP protocol.
+  if (ereg("^HTTP",$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 $r;
+  }
+  // gotta get rid of headers here
+  if ((!$hdrfnd) && ereg("^(.*)\r\n\r\n",$data,$_xh[$parser]['ha'])) {
+    $data=ereg_replace("^.*\r\n\r\n", "", $data);
+    $hdrfnd=1;
+  }
+
+  if (!xml_parse($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'][1]);
+  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;
+
+   $type = gettype($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:
+         $xmlrpc_val = false;
+         break;
+   }
+   return $xmlrpc_val;
+}
+
+?>
diff --git a/includes/xmlrpcs.inc b/includes/xmlrpcs.inc
new file mode 100644
index 000000000..3fa1cd914
--- /dev/null
+++ b/includes/xmlrpcs.inc
@@ -0,0 +1,287 @@
+<?php
+// by Edd Dumbill (C) 1999-2001
+// <edd@usefulinc.com>
+// $Id$
+
+// License is granted to use or modify this software ("XML-RPC for PHP")
+// for commercial or non-commercial use provided the copyright of the author
+// is preserved in any distributed or derivative work.
+
+// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED 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 AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// XML RPC Server class
+// requires: xmlrpc.inc
+
+// listMethods: either a string, or nothing
+$_xmlrpcs_listMethods_sig=array(array($xmlrpcArray, $xmlrpcString),
+                                array($xmlrpcArray));
+$_xmlrpcs_listMethods_doc='This method lists all the methods that the XML-RPC server knows how to dispatch';
+function _xmlrpcs_listMethods($server, $m) {
+  global $xmlrpcerr, $xmlrpcstr, $_xmlrpcs_dmap;
+  $v=new xmlrpcval();
+  $dmap=$server->dmap;
+  $outAr=array();
+  for(reset($dmap); list($key, $val)=each($dmap); ) {
+    $outAr[]=new xmlrpcval($key, "string");
+  }
+  $dmap=$_xmlrpcs_dmap;
+  for(reset($dmap); list($key, $val)=each($dmap); ) {
+    $outAr[]=new xmlrpcval($key, "string");
+  }
+  $v->addArray($outAr);
+  return new xmlrpcresp($v);
+}
+
+$_xmlrpcs_methodSignature_sig=array(array($xmlrpcArray, $xmlrpcString));
+$_xmlrpcs_methodSignature_doc='Returns an array of known signatures (an array of arrays) for the method name passed. If no signatures are known, returns a none-array (test for type != array to detect missing signature)';
+function _xmlrpcs_methodSignature($server, $m) {
+  global $xmlrpcerr, $xmlrpcstr, $_xmlrpcs_dmap;
+
+  $methName=$m->getParam(0);
+  $methName=$methName->scalarval();
+  if (ereg("^system\.", $methName)) {
+    $dmap=$_xmlrpcs_dmap; $sysCall=1;
+  } else {
+    $dmap=$server->dmap; $sysCall=0;
+  }
+  //  print "<!-- ${methName} -->\n";
+  if (isset($dmap[$methName])) {
+    if ($dmap[$methName]["signature"]) {
+      $sigs=array();
+      $thesigs=$dmap[$methName]["signature"];
+      for($i=0; $i<sizeof($thesigs); $i++) {
+        $cursig=array();
+        $inSig=$thesigs[$i];
+        for($j=0; $j<sizeof($inSig); $j++) {
+          $cursig[]=new xmlrpcval($inSig[$j], "string");
+        }
+        $sigs[]=new xmlrpcval($cursig, "array");
+      }
+      $r=new xmlrpcresp(new xmlrpcval($sigs, "array"));
+    } else {
+      $r=new xmlrpcresp(new xmlrpcval("undef", "string"));
+    }
+  } else {
+      $r=new xmlrpcresp(0,
+              $xmlrpcerr["introspect_unknown"],
+              $xmlrpcstr["introspect_unknown"]);
+  }
+  return $r;
+}
+
+$_xmlrpcs_methodHelp_sig=array(array($xmlrpcString, $xmlrpcString));
+$_xmlrpcs_methodHelp_doc='Returns help text if defined for the method passed, otherwise returns an empty string';
+function _xmlrpcs_methodHelp($server, $m) {
+  global $xmlrpcerr, $xmlrpcstr, $_xmlrpcs_dmap;
+
+  $methName=$m->getParam(0);
+  $methName=$methName->scalarval();
+  if (ereg("^system\.", $methName)) {
+    $dmap=$_xmlrpcs_dmap; $sysCall=1;
+  } else {
+    $dmap=$server->dmap; $sysCall=0;
+  }
+  //  print "<!-- ${methName} -->\n";
+  if (isset($dmap[$methName])) {
+    if ($dmap[$methName]["docstring"]) {
+      $r=new xmlrpcresp(new xmlrpcval($dmap[$methName]["docstring"]),
+                        "string");
+    } else {
+      $r=new xmlrpcresp(new xmlrpcval("", "string"));
+    }
+  } else {
+      $r=new xmlrpcresp(0,
+              $xmlrpcerr["introspect_unknown"],
+              $xmlrpcstr["introspect_unknown"]);
+  }
+  return $r;
+}
+
+$_xmlrpcs_dmap=array(
+                     "system.listMethods" =>
+                     array("function" => "_xmlrpcs_listMethods",
+                           "signature" => $_xmlrpcs_listMethods_sig,
+                           "docstring" => $_xmlrpcs_listMethods_doc),
+                     "system.methodHelp" =>
+                     array("function" => "_xmlrpcs_methodHelp",
+                           "signature" => $_xmlrpcs_methodHelp_sig,
+                           "docstring" => $_xmlrpcs_methodHelp_doc),
+                     "system.methodSignature" =>
+                     array("function" => "_xmlrpcs_methodSignature",
+                           "signature" => $_xmlrpcs_methodSignature_sig,
+                           "docstring" => $_xmlrpcs_methodSignature_doc)
+                     );
+
+$_xmlrpc_debuginfo="";
+function xmlrpc_debugmsg($m) {
+  global $_xmlrpc_debuginfo;
+  $_xmlrpc_debuginfo=$_xmlrpc_debuginfo . $m . "\n";
+}
+
+class xmlrpc_server {
+  var $dmap=array();
+
+  function xmlrpc_server($dispMap, $serviceNow=1) {
+    global $HTTP_RAW_POST_DATA;
+    // dispMap is a despatch array of methods
+    // mapped to function names and signatures
+    // if a method
+    // doesn't appear in the map then an unknown
+    // method error is generated
+    $this->dmap=$dispMap;
+    if ($serviceNow) {
+      $this->service();
+    }
+  }
+
+  function serializeDebug() {
+    global $_xmlrpc_debuginfo;
+    if ($_xmlrpc_debuginfo!="")
+      return "<!-- DEBUG INFO:\n\n" .
+        $_xmlrpc_debuginfo . "\n-->\n";
+    else
+      return "";
+  }
+
+  function service() {
+    $r=$this->parseRequest();
+    $payload="<?xml version=\"1.0\"?>\n" .
+      $this->serializeDebug() .
+      $r->serialize();
+    Header("Content-type: text/xml\r\nContent-length: " .
+           strlen($payload));
+    print $payload;
+  }
+
+  function verifySignature($in, $sig) {
+    for($i=0; $i<sizeof($sig); $i++) {
+      // check each possible signature in turn
+      $cursig=$sig[$i];
+      if (sizeof($cursig)==$in->getNumParams()+1) {
+        $itsOK=1;
+        for($n=0; $n<$in->getNumParams(); $n++) {
+          $p=$in->getParam($n);
+          // print "<!-- $p -->\n";
+          if ($p->kindOf() == "scalar") {
+            $pt=$p->scalartyp();
+          } else {
+            $pt=$p->kindOf();
+          }
+          // $n+1 as first type of sig is return type
+          if ($pt != $cursig[$n+1]) {
+            $itsOK=0;
+            $pno=$n+1; $wanted=$cursig[$n+1]; $got=$pt;
+            break;
+          }
+        }
+      if ($itsOK)
+        return array(1);
+      }
+    }
+    return array(0, "Wanted ${wanted}, got ${got} at param ${pno})");
+  }
+
+  function parseRequest($data="") {
+  global $_xh,$HTTP_RAW_POST_DATA;
+  global $xmlrpcerr, $xmlrpcstr, $xmlrpcerrxml, $xmlrpc_defencoding,
+    $_xmlrpcs_dmap;
+
+
+
+  if ($data=="") {
+    $data=$HTTP_RAW_POST_DATA;
+  }
+  $parser = xml_parser_create($xmlrpc_defencoding);
+
+  $_xh[$parser]=array();
+  $_xh[$parser]['st']="";
+  $_xh[$parser]['cm']=0;
+  $_xh[$parser]['isf']=0;
+  $_xh[$parser]['params']=array();
+  $_xh[$parser]['method']="";
+
+  // decompose incoming XML into request structure
+
+  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");
+  if (!xml_parse($parser, $data, 1)) {
+    // return XML error as a faultCode
+    $r=new xmlrpcresp(0,
+            $xmlrpcerrxml+xml_get_error_code($parser),
+            sprintf("XML error: %s at line %d",
+          xml_error_string(xml_get_error_code($parser)),
+          xml_get_current_line_number($parser)));
+    xml_parser_free($parser);
+  } else {
+    xml_parser_free($parser);
+    $m=new xmlrpcmsg($_xh[$parser]['method']);
+    // now add parameters in
+    for($i=0; $i<sizeof($_xh[$parser]['params']); $i++) {
+      //print "<!-- " . $_xh[$parser]['params'][$i]. "-->\n";
+      $plist.="$i - " .  $_xh[$parser]['params'][$i]. " \n";
+      eval('$m->addParam(' . $_xh[$parser]['params'][$i]. ");");
+    }
+    // uncomment this to really see what the server's getting!
+    // xmlrpc_debugmsg($plist);
+    // now to deal with the method
+    $methName=$_xh[$parser]['method'];
+    if (ereg("^system\.", $methName)) {
+      $dmap=$_xmlrpcs_dmap; $sysCall=1;
+    } else {
+      $dmap=$this->dmap; $sysCall=0;
+    }
+    if (isset($dmap[$methName]['function'])) {
+      // dispatch if exists
+      if (isset($dmap[$methName]['signature'])) {
+        $sr=$this->verifySignature($m,
+                                  $dmap[$methName]['signature'] );
+      }
+      if ( (!isset($dmap[$methName]['signature']))
+           || $sr[0]) {
+        // if no signature or correct signature
+        if ($sysCall) {
+          eval('$r=' . $dmap[$methName]['function'] .
+               '($this, $m);');
+        } else {
+          eval('$r=' . $dmap[$methName]['function'] .
+               '($m);');
+        }
+      } else {
+        $r=new xmlrpcresp(0,
+              $xmlrpcerr["incorrect_params"],
+              $xmlrpcstr["incorrect_params"].": ". $sr[1]);
+      }
+    } else {
+    // else prepare error response
+    $r=new xmlrpcresp(0,
+              $xmlrpcerr["unknown_method"],
+              $xmlrpcstr["unknown_method"]);
+    }
+  }
+  return $r;
+  }
+
+  function echoInput() {
+  global $HTTP_RAW_POST_DATA;
+
+  // a debugging routine: just echos back the input
+  // packet as a string value
+
+  $r=new xmlrpcresp;
+  $r->xv=new xmlrpcval( "'Aha said I: '" . $HTTP_RAW_POST_DATA, "string");
+  print $r->serialize();
+  }
+}
+
+?>
diff --git a/xmlrpc.php b/xmlrpc.php
new file mode 100644
index 000000000..7bc237d40
--- /dev/null
+++ b/xmlrpc.php
@@ -0,0 +1,16 @@
+<?php
+
+include_once("includes/xmlrpcs.inc");
+include_once "includes/common.inc";
+
+$functions = array();
+
+foreach (module_list() as $name) {
+  if (module_hook($name, "xmlrpc")) {
+    $functions = array_merge($functions, module_invoke($name, "xmlrpc"));
+  }
+}
+
+$server = new xmlrpc_server($functions);
+
+?>
-- 
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