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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @package Zend_XmlRpc
* @subpackage Server
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Fault.php 16541 2009-07-07 06:59:03Z bkarwin $
*/
/**
* Zend_XmlRpc_Value
*/
require_once 'Zend/XmlRpc/Value.php';
/**
* XMLRPC Faults
*
* Container for XMLRPC faults, containing both a code and a message;
* additionally, has methods for determining if an XML response is an XMLRPC
* fault, as well as generating the XML for an XMLRPC fault response.
*
* To allow method chaining, you may only use the {@link getInstance()} factory
* to instantiate a Zend_XmlRpc_Server_Fault.
*
* @category Zend
* @package Zend_XmlRpc
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_XmlRpc_Fault
{
/**
* Fault code
* @var int
*/
protected $_code;
/**
* Fault character encoding
* @var string
*/
protected $_encoding = 'UTF-8';
/**
* Fault message
* @var string
*/
protected $_message;
/**
* Internal fault codes => messages
* @var array
*/
protected $_internal = array(
404 => 'Unknown Error',
// 610 - 619 reflection errors
610 => 'Invalid method class',
611 => 'Unable to attach function or callback; not callable',
612 => 'Unable to load array; not an array',
613 => 'One or more method records are corrupt or otherwise unusable',
// 620 - 629 dispatch errors
620 => 'Method does not exist',
621 => 'Error instantiating class to invoke method',
622 => 'Method missing implementation',
623 => 'Calling parameters do not match signature',
// 630 - 639 request errors
630 => 'Unable to read request',
631 => 'Failed to parse request',
632 => 'Invalid request, no method passed; request must contain a \'methodName\' tag',
633 => 'Param must contain a value',
634 => 'Invalid method name',
635 => 'Invalid XML provided to request',
636 => 'Error creating xmlrpc value',
// 640 - 649 system.* errors
640 => 'Method does not exist',
// 650 - 659 response errors
650 => 'Invalid XML provided for response',
651 => 'Failed to parse response',
652 => 'Invalid response',
653 => 'Invalid XMLRPC value in response',
);
/**
* Constructor
*
* @return Zend_XmlRpc_Fault
*/
public function __construct($code = 404, $message = '')
{
$this->setCode($code);
$code = $this->getCode();
if (empty($message) && isset($this->_internal[$code])) {
$message = $this->_internal[$code];
} elseif (empty($message)) {
$message = 'Unknown error';
}
$this->setMessage($message);
}
/**
* Set the fault code
*
* @param int $code
* @return Zend_XmlRpc_Fault
*/
public function setCode($code)
{
$this->_code = (int) $code;
return $this;
}
/**
* Return fault code
*
* @return int
*/
public function getCode()
{
return $this->_code;
}
/**
* Retrieve fault message
*
* @param string
* @return Zend_XmlRpc_Fault
*/
public function setMessage($message)
{
$this->_message = (string) $message;
return $this;
}
/**
* Retrieve fault message
*
* @return string
*/
public function getMessage()
{
return $this->_message;
}
/**
* Set encoding to use in fault response
*
* @param string $encoding
* @return Zend_XmlRpc_Fault
*/
public function setEncoding($encoding)
{
$this->_encoding = $encoding;
return $this;
}
/**
* Retrieve current fault encoding
*
* @return string
*/
public function getEncoding()
{
return $this->_encoding;
}
/**
* Load an XMLRPC fault from XML
*
* @param string $fault
* @return boolean Returns true if successfully loaded fault response, false
* if response was not a fault response
* @throws Zend_XmlRpc_Exception if no or faulty XML provided, or if fault
* response does not contain either code or message
*/
public function loadXml($fault)
{
if (!is_string($fault)) {
require_once 'Zend/XmlRpc/Exception.php';
throw new Zend_XmlRpc_Exception('Invalid XML provided to fault');
}
try {
$xml = @new SimpleXMLElement($fault);
} catch (Exception $e) {
// Not valid XML
require_once 'Zend/XmlRpc/Exception.php';
throw new Zend_XmlRpc_Exception('Failed to parse XML fault: ' . $e->getMessage(), 500);
}
// Check for fault
if (!$xml->fault) {
// Not a fault
return false;
}
if (!$xml->fault->value->struct) {
// not a proper fault
require_once 'Zend/XmlRpc/Exception.php';
throw new Zend_XmlRpc_Exception('Invalid fault structure', 500);
}
$structXml = $xml->fault->value->asXML();
$structXml = preg_replace('/<\?xml version=.*?\?>/i', '', $structXml);
$struct = Zend_XmlRpc_Value::getXmlRpcValue(trim($structXml), Zend_XmlRpc_Value::XML_STRING);
$struct = $struct->getValue();
if (isset($struct['faultCode'])) {
$code = $struct['faultCode'];
}
if (isset($struct['faultString'])) {
$message = $struct['faultString'];
}
if (empty($code) && empty($message)) {
require_once 'Zend/XmlRpc/Exception.php';
throw new Zend_XmlRpc_Exception('Fault code and string required');
}
if (empty($code)) {
$code = '404';
}
if (empty($message)) {
if (isset($this->_internal[$code])) {
$message = $this->_internal[$code];
} else {
$message = 'Unknown Error';
}
}
$this->setCode($code);
$this->setMessage($message);
return true;
}
/**
* Determine if an XML response is an XMLRPC fault
*
* @param string $xml
* @return boolean
*/
public static function isFault($xml)
{
$fault = new self();
require_once 'Zend/XmlRpc/Exception.php';
try {
$isFault = $fault->loadXml($xml);
} catch (Zend_XmlRpc_Exception $e) {
$isFault = false;
}
return $isFault;
}
/**
* Serialize fault to XML
*
* @return string
*/
public function saveXML()
{
// Create fault value
$faultStruct = array(
'faultCode' => $this->getCode(),
'faultString' => $this->getMessage()
);
$value = Zend_XmlRpc_Value::getXmlRpcValue($faultStruct);
$valueDOM = new DOMDocument('1.0', $this->getEncoding());
$valueDOM->loadXML($value->saveXML());
// Build response XML
$dom = new DOMDocument('1.0', $this->getEncoding());
$r = $dom->appendChild($dom->createElement('methodResponse'));
$f = $r->appendChild($dom->createElement('fault'));
$f->appendChild($dom->importNode($valueDOM->documentElement, 1));
return $dom->saveXML();
}
/**
* Return XML fault response
*
* @return string
*/
public function __toString()
{
return $this->saveXML();
}
}
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