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<?php
/**
* IXR_IntrospectionServer
*
* @package IXR
* @since 1.5.0
*/
class IXR_IntrospectionServer extends IXR_Server
{
var $signatures;
var $help;
/**
* PHP5 constructor.
*/
function __construct()
{
$this->setCallbacks();
$this->setCapabilities();
$this->capabilities['introspection'] = array(
'specUrl' => 'http://xmlrpc.usefulinc.com/doc/reserved.html',
'specVersion' => 1
);
$this->addCallback(
'system.methodSignature',
'this:methodSignature',
array('array', 'string'),
'Returns an array describing the return type and required parameters of a method'
);
$this->addCallback(
'system.getCapabilities',
'this:getCapabilities',
array('struct'),
'Returns a struct describing the XML-RPC specifications supported by this server'
);
$this->addCallback(
'system.listMethods',
'this:listMethods',
array('array'),
'Returns an array of available methods on this server'
);
$this->addCallback(
'system.methodHelp',
'this:methodHelp',
array('string', 'string'),
'Returns a documentation string for the specified method'
);
}
/**
* PHP4 constructor.
*/
public function IXR_IntrospectionServer() {
self::__construct();
}
function addCallback($method, $callback, $args, $help)
{
$this->callbacks[$method] = $callback;
$this->signatures[$method] = $args;
$this->help[$method] = $help;
}
function call($methodname, $args)
{
// Make sure it's in an array
if ($args && !is_array($args)) {
$args = array($args);
}
// Over-rides default call method, adds signature check
if (!$this->hasMethod($methodname)) {
return new IXR_Error(-32601, 'server error. requested method "'.$this->message->methodName.'" not specified.');
}
$method = $this->callbacks[$methodname];
$signature = $this->signatures[$methodname];
$returnType = array_shift($signature);
// Check the number of arguments
if (count($args) != count($signature)) {
return new IXR_Error(-32602, 'server error. wrong number of method parameters');
}
// Check the argument types
$ok = true;
$argsbackup = $args;
for ($i = 0, $j = count($args); $i < $j; $i++) {
$arg = array_shift($args);
$type = array_shift($signature);
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)) {
$ok = false;
}
break;
case 'date':
case 'dateTime.iso8601':
if (!is_a($arg, 'IXR_Date')) {
$ok = false;
}
break;
}
if (!$ok) {
return new IXR_Error(-32602, 'server error. invalid method parameters');
}
}
// It passed the test - run the "real" method call
return parent::call($methodname, $argsbackup);
}
function methodSignature($method)
{
if (!$this->hasMethod($method)) {
return new IXR_Error(-32601, 'server error. requested method "'.$method.'" not specified.');
}
// We should be returning an array of types
$types = $this->signatures[$method];
$return = array();
foreach ($types as $type) {
switch ($type) {
case 'string':
$return[] = 'string';
break;
case 'int':
case 'i4':
$return[] = 42;
break;
case 'double':
$return[] = 3.1415;
break;
case 'dateTime.iso8601':
$return[] = new IXR_Date(time());
break;
case 'boolean':
$return[] = true;
break;
case 'base64':
$return[] = new IXR_Base64('base64');
break;
case 'array':
$return[] = array('array');
break;
case 'struct':
$return[] = array('struct' => 'struct');
break;
}
}
return $return;
}
function methodHelp($method)
{
return $this->help[$method];
}
}