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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]; } }