--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/xmlrpcs.inc	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,313 @@
+<?php
+// $Id: xmlrpcs.inc,v 1.24 2007/12/31 08:54:36 dries Exp $
+
+/**
+ * The main entry point for XML-RPC requests.
+ *
+ * @param $callbacks
+ *   Array of external XML-RPC method names with the callbacks they map to.
+ */
+function xmlrpc_server($callbacks) {
+  $xmlrpc_server = new stdClass();
+  // Define built-in XML-RPC method names
+  $defaults = array(
+      'system.multicall' => 'xmlrpc_server_multicall',
+    array(
+      'system.methodSignature',
+      'xmlrpc_server_method_signature',
+      array('array', 'string'),
+      'Returns an array describing the return type and required parameters of a method.'
+    ),
+    array(
+      'system.getCapabilities',
+      'xmlrpc_server_get_capabilities',
+      array('struct'),
+      'Returns a struct describing the XML-RPC specifications supported by this server.'
+    ),
+    array(
+      'system.listMethods',
+      'xmlrpc_server_list_methods',
+      array('array'),
+      'Returns an array of available methods on this server.'),
+    array(
+      'system.methodHelp',
+      'xmlrpc_server_method_help',
+      array('string', 'string'),
+      'Returns a documentation string for the specified method.')
+  );
+  // We build an array of all method names by combining the built-ins
+  // with those defined by modules implementing the _xmlrpc hook.
+  // Built-in methods are overridable.
+  foreach (array_merge($defaults, (array)$callbacks) as $key => $callback) {
+    // we could check for is_array($callback)
+    if (is_int($key)) {
+      $method = $callback[0];
+      $xmlrpc_server->callbacks[$method] = $callback[1];
+      $xmlrpc_server->signatures[$method] = $callback[2];
+      $xmlrpc_server->help[$method] = $callback[3];
+    }
+    else {
+      $xmlrpc_server->callbacks[$key] = $callback;
+      $xmlrpc_server->signatures[$key] = '';
+      $xmlrpc_server->help[$key] = '';
+    }
+  }
+
+  $data = file_get_contents('php://input');
+  if (!$data) {
+    die('XML-RPC server accepts POST requests only.');
+  }
+  $xmlrpc_server->message = xmlrpc_message($data);
+  if (!xmlrpc_message_parse($xmlrpc_server->message)) {
+    xmlrpc_server_error(-32700, t('Parse error. Request not well formed.'));
+  }
+  if ($xmlrpc_server->message->messagetype != 'methodCall') {
+    xmlrpc_server_error(-32600, t('Server error. Invalid XML-RPC. Request must be a methodCall.'));
+  }
+  xmlrpc_server_set($xmlrpc_server);
+  $result = xmlrpc_server_call($xmlrpc_server, $xmlrpc_server->message->methodname, $xmlrpc_server->message->params);
+
+  if ($result->is_error) {
+    xmlrpc_server_error($result);
+  }
+  // Encode the result
+  $r = xmlrpc_value($result);
+  // Create the XML
+  $xml = '
+<methodResponse>
+  <params>
+  <param>
+    <value>'.
+    xmlrpc_value_get_xml($r)
+    .'</value>
+  </param>
+  </params>
+</methodResponse>
+
+';
+  // Send it
+  xmlrpc_server_output($xml);
+}
+
+/**
+ * Throw an XML-RPC error.
+ *
+ * @param $error
+ *   an error object OR integer error code
+ * @param $message
+ *   description of error, used only if integer error code was passed
+ */
+function xmlrpc_server_error($error, $message = FALSE) {
+  if ($message && !is_object($error)) {
+    $error = xmlrpc_error($error, $message);
+  }
+  xmlrpc_server_output(xmlrpc_error_get_xml($error));
+}
+
+function xmlrpc_server_output($xml) {
+  $xml = '<?xml version="1.0"?>'."\n". $xml;
+  header('Connection: close');
+  header('Content-Length: '. strlen($xml));
+  header('Content-Type: text/xml');
+  header('Date: '. date('r'));
+  echo $xml;
+  exit;
+}
+
+/**
+ * Store a copy of the request temporarily.
+ *
+ * @param $xmlrpc_server
+ *   Request object created by xmlrpc_server().
+ */
+function xmlrpc_server_set($xmlrpc_server = NULL) {
+  static $server;
+  if (!isset($server)) {
+    $server = $xmlrpc_server;
+  }
+  return $server;
+}
+
+// Retrieve the stored request.
+function xmlrpc_server_get() {
+  return xmlrpc_server_set();
+}
+
+/**
+ * Dispatch the request and any parameters to the appropriate handler.
+ *
+ * @param $xmlrpc_server
+ * @param $methodname
+ *   The external XML-RPC method name, e.g. 'system.methodHelp'
+ * @param $args
+ *   Array containing any parameters that were sent along with the request.
+ */
+function xmlrpc_server_call($xmlrpc_server, $methodname, $args) {
+  // Make sure parameters are in an array
+  if ($args && !is_array($args)) {
+    $args = array($args);
+  }
+  // Has this method been mapped to a Drupal function by us or by modules?
+  if (!isset($xmlrpc_server->callbacks[$methodname])) {
+    return xmlrpc_error(-32601, t('Server error. Requested method %methodname not specified.', array("%methodname" => $xmlrpc_server->message->methodname)));
+  }
+  $method = $xmlrpc_server->callbacks[$methodname];
+  $signature = $xmlrpc_server->signatures[$methodname];
+
+  // If the method has a signature, validate the request against the signature
+  if (is_array($signature)) {
+    $ok = TRUE;
+    $return_type = array_shift($signature);
+    // Check the number of arguments
+    if (count($args) != count($signature)) {
+      return xmlrpc_error(-32602, t('Server error. Wrong number of method parameters.'));
+    }
+    // Check the argument types
+    foreach ($signature as $key => $type) {
+      $arg = $args[$key];
+      switch ($type) {
+        case 'int':
+        case 'i4':
+          if (is_array($arg) || !is_int($arg)) {
+            $ok = FALSE;
+          }
+          break;
+        case 'base64':
+        case 'string':
+          if (!is_string($arg)) {
+            $ok = FALSE;
+          }
+          break;
+        case 'boolean':
+          if ($arg !== FALSE && $arg !== TRUE) {
+            $ok = FALSE;
+          }
+          break;
+        case 'float':
+        case 'double':
+          if (!is_float($arg)) {
+            $ok = FALSE;
+          }
+          break;
+        case 'date':
+        case 'dateTime.iso8601':
+          if (!$arg->is_date) {
+            $ok = FALSE;
+          }
+          break;
+      }
+      if (!$ok) {
+        return xmlrpc_error(-32602, t('Server error. Invalid method parameters.'));
+      }
+    }
+  }
+
+  if (!function_exists($method)) {
+    return xmlrpc_error(-32601, t('Server error. Requested function %method does not exist.', array("%method" => $method)));
+  }
+  // Call the mapped function
+  return call_user_func_array($method, $args);
+}
+
+function xmlrpc_server_multicall($methodcalls) {
+  // See http://www.xmlrpc.com/discuss/msgReader$1208
+  $return = array();
+  $xmlrpc_server = xmlrpc_server_get();
+  foreach ($methodcalls as $call) {
+    $ok = TRUE;
+    if (!isset($call['methodName']) || !isset($call['params'])) {
+      $result = xmlrpc_error(3, t('Invalid syntax for system.multicall.'));
+      $ok = FALSE;
+    }
+    $method = $call['methodName'];
+    $params = $call['params'];
+    if ($method == 'system.multicall') {
+      $result = xmlrpc_error(-32600, t('Recursive calls to system.multicall are forbidden.'));
+    }
+    elseif ($ok) {
+      $result = xmlrpc_server_call($xmlrpc_server, $method, $params);
+    }
+    if ($result->is_error) {
+      $return[] = array(
+        'faultCode' => $result->code,
+        'faultString' => $result->message
+      );
+    }
+    else {
+      $return[] = $result;
+    }
+  }
+  return $return;
+}
+
+
+/**
+ * XML-RPC method system.listMethods maps to this function.
+ */
+function xmlrpc_server_list_methods() {
+  $xmlrpc_server = xmlrpc_server_get();
+  return array_keys($xmlrpc_server->callbacks);
+}
+
+/**
+ * XML-RPC method system.getCapabilities maps to this function.
+ * See http://groups.yahoo.com/group/xml-rpc/message/2897
+ */
+function xmlrpc_server_get_capabilities() {
+  return array(
+    'xmlrpc' => array(
+      'specUrl' => 'http://www.xmlrpc.com/spec',
+      'specVersion' => 1
+    ),
+    'faults_interop' => array(
+      'specUrl' => 'http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php',
+      'specVersion' => 20010516
+    ),
+    'system.multicall' => array(
+      'specUrl' => 'http://www.xmlrpc.com/discuss/msgReader$1208',
+      'specVersion' => 1
+    ),
+    'introspection' => array(
+    'specUrl' => 'http://scripts.incutio.com/xmlrpc/introspection.html',
+    'specVersion' => 1
+    )
+  );
+}
+
+/**
+ * XML-RPC method system.methodSignature maps to this function.
+ *
+ * @param $methodname
+ *   Name of method for which we return a method signature.
+ * @return array
+ *   An array of types representing the method signature of the
+ *   function that the methodname maps to. The methodSignature of
+ *   this function is 'array', 'string' because it takes an array
+ *   and returns a string.
+ */
+function xmlrpc_server_method_signature($methodname) {
+  $xmlrpc_server = xmlrpc_server_get();
+  if (!isset($xmlrpc_server->callbacks[$methodname])) {
+    return xmlrpc_error(-32601, t('Server error. Requested method %methodname not specified.', array("%methodname" => $methodname)));
+  }
+  if (!is_array($xmlrpc_server->signatures[$methodname])) {
+    return xmlrpc_error(-32601, t('Server error. Requested method %methodname signature not specified.', array("%methodname" => $methodname)));
+  }
+  // We array of types
+  $return = array();
+  foreach ($xmlrpc_server->signatures[$methodname] as $type) {
+    $return[] = $type;
+  }
+  return $return;
+}
+
+/**
+ * XML-RPC method system.methodHelp maps to this function.
+ *
+ * @param $method
+ *   Name of method for which we return a help string.
+ */
+function xmlrpc_server_method_help($method) {
+  $xmlrpc_server = xmlrpc_server_get();
+  return $xmlrpc_server->help[$method];
+}