class-ixr.php

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                $return[] = array(
                    'faultCode' => $result->code,
                    'faultString' => $result->message
                );
            } else {
                $return[] = array($result);
            }
        }
        return $return;
    }
}

class IXR_Request {
    var $method;
    var $args;
    var $xml;
    function IXR_Request($method, $args) {
        $this->method = $method;
        $this->args = $args;
        $this->xml = <<<EOD
<?xml version="1.0"?>
<methodCall>
<methodName>{$this->method}</methodName>
<params>

EOD;
        foreach ($this->args as $arg) {
            $this->xml .= '<param><value>';
            $v = new IXR_Value($arg);
            $this->xml .= $v->getXml();
            $this->xml .= "</value></param>\n";
        }
        $this->xml .= '</params></methodCall>';
    }
    function getLength() {
        return strlen($this->xml);
    }
    function getXml() {
        return $this->xml;
    }
}


class IXR_Client {
    var $server;
    var $port;
    var $path;
    var $useragent;
    var $response;
    var $message = false;
    var $debug = false;
	var $timeout;
    // Storage place for an error message
    var $error = false;
    function IXR_Client($server, $path = false, $port = 80, $timeout = false) {
        if (!$path) {
            // Assume we have been given a URL instead
            $bits = parse_url($server);
            $this->server = $bits['host'];
            $this->port = isset($bits['port']) ? $bits['port'] : 80;
            $this->path = isset($bits['path']) ? $bits['path'] : '/';
            // Make absolutely sure we have a path
            if (!$this->path) {
                $this->path = '/';
            }
        } else {
            $this->server = $server;
            $this->path = $path;
            $this->port = $port;
        }
        $this->useragent = 'Incutio XML-RPC';
		$this->timeout = $timeout;
    }
    function query() {
        $args = func_get_args();
        $method = array_shift($args);
        $request = new IXR_Request($method, $args);
        $length = $request->getLength();
        $xml = $request->getXml();
        $r = "\r\n";
        $request  = "POST {$this->path} HTTP/1.0$r";
        $request .= "Host: {$this->server}$r";
        $request .= "Content-Type: text/xml$r";
        $request .= "User-Agent: {$this->useragent}$r";
        $request .= "Content-length: {$length}$r$r";
        $request .= $xml;
        // Now send the request
        if ($this->debug) {
            echo '<pre>'.htmlspecialchars($request)."\n</pre>\n\n";
        }
        if ($this->timeout) {
            $fp = @fsockopen($this->server, $this->port, $errno, $errstr, $this->timeout);
        } else {
            $fp = @fsockopen($this->server, $this->port, $errno, $errstr);
        }
        if (!$fp) {
            $this->error = new IXR_Error(-32300, "transport error - could not open socket: $errno $errstr");
            return false;
        }
        fputs($fp, $request);
        $contents = '';
        $gotFirstLine = false;
        $gettingHeaders = true;
        while (!feof($fp)) {
            $line = fgets($fp, 4096);
            if (!$gotFirstLine) {
                // Check line for '200'
                if (strstr($line, '200') === false) {
                    $this->error = new IXR_Error(-32300, 'transport error - HTTP status code was not 200');
                    return false;
                }
                $gotFirstLine = true;
            }
            if (trim($line) == '') {
                $gettingHeaders = false;
            }
            if (!$gettingHeaders) {
                $contents .= trim($line)."\n";
            }
        }
        if ($this->debug) {
            echo '<pre>'.htmlspecialchars($contents)."\n</pre>\n\n";
        }
        // Now parse what we've got back
        $this->message = new IXR_Message($contents);
        if (!$this->message->parse()) {
            // XML error
            $this->error = new IXR_Error(-32700, 'parse error. not well formed');
            return false;
        }
        // Is the message a fault?
        if ($this->message->messageType == 'fault') {
            $this->error = new IXR_Error($this->message->faultCode, $this->message->faultString);
            return false;
        }
        // Message must be OK
        return true;
    }
    function getResponse() {
        // methodResponses can only have one param - return that
        return $this->message->params[0];
    }
    function isError() {
        return (is_object($this->error));
    }
    function getErrorCode() {
        return $this->error->code;
    }
    function getErrorMessage() {
        return $this->error->message;
    }
}


class IXR_Error {
    var $code;
    var $message;
    function IXR_Error($code, $message) {
        $this->code = $code;
        $this->message = $message;
    }
    function getXml() {
        $xml = <<<EOD
<methodResponse>
  <fault>
    <value>
      <struct>
        <member>
          <name>faultCode</name>
          <value><int>{$this->code}</int></value>
        </member>
        <member>
          <name>faultString</name>
          <value><string>{$this->message}</string></value>
        </member>
      </struct>
    </value>
  </fault>
</methodResponse> 

EOD;
        return $xml;
    }
}


class IXR_Date {
    var $year;
    var $month;
    var $day;
    var $hour;
    var $minute;
    var $second;
    function IXR_Date($time) {
        // $time can be a PHP timestamp or an ISO one
        if (is_numeric($time)) {
            $this->parseTimestamp($time);
        } else {
            $this->parseIso($time);
        }
    }
    function parseTimestamp($timestamp) {
        $this->year = date('Y', $timestamp);
        $this->month = date('m', $timestamp);
        $this->day = date('d', $timestamp);
        $this->hour = date('H', $timestamp);
        $this->minute = date('i', $timestamp);
        $this->second = date('s', $timestamp);
    }
    function parseIso($iso) {
        $this->year = substr($iso, 0, 4);
        $this->month = substr($iso, 4, 2);
        $this->day = substr($iso, 6, 2);
        $this->hour = substr($iso, 9, 2);
        $this->minute = substr($iso, 12, 2);
        $this->second = substr($iso, 15, 2);
        $this->timezone = substr($iso, 17);
    }
    function getIso() {
        return $this->year.$this->month.$this->day.'T'.$this->hour.':'.$this->minute.':'.$this->second.$this->timezone;
    }
    function getXml() {
        return '<dateTime.iso8601>'.$this->getIso().'</dateTime.iso8601>';
    }
    function getTimestamp() {
        return mktime($this->hour, $this->minute, $this->second, $this->month, $this->day, $this->year);
    }
}


class IXR_Base64 {
    var $data;
    function IXR_Base64($data) {
        $this->data = $data;
    }
    function getXml() {
        return '<base64>'.base64_encode($this->data).'</base64>';
    }
}


class IXR_IntrospectionServer extends IXR_Server {
    var $signatures;
    var $help;
    function IXR_IntrospectionServer() {
        $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'
        );
        $this->addCallback(
            'system.methodHelp', 
            'this:methodHelp', 
            array('string', 'string'), 
            'Returns a documentation string for the specified method'
        );
    }
    function addCallback($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];
    }
}


class IXR_ClientMulticall extends IXR_Client {
    var $calls = array();
    function IXR_ClientMulticall($server, $path = false, $port = 80) {
        parent::IXR_Client($server, $path, $port);
        $this->useragent = 'The Incutio XML-RPC PHP Library (multicall client)';
    }
    function addCall() {
        $args = func_get_args();
        $methodName = array_shift($args);
        $struct = array(
            'methodName' => $methodName,
            'params' => $args
        );
        $this->calls[] = $struct;
    }
    function query() {
        // Prepare multicall, then call the parent::query() method
        return parent::query('system.multicall', $this->calls);
    }
}

?>