611 lines
19 KiB
PHP
611 lines
19 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Rest
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* @subpackage Server
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Server.php 18545 2009-10-15 11:06:03Z yoshida@zend.co.jp $
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*/
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/**
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* @see Zend_Server_Interface
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*/
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require_once 'Zend/Server/Interface.php';
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/**
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* @see Zend_Server_Reflection
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*/
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require_once 'Zend/Server/Reflection.php';
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/**
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* @see Zend_Server_Abstract
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*/
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require_once 'Zend/Server/Abstract.php';
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/**
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* @category Zend
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* @package Zend_Rest
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* @subpackage Server
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Rest_Server implements Zend_Server_Interface
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{
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/**
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* Class Constructor Args
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* @var array
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*/
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protected $_args = array();
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/**
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* @var string Encoding
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*/
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protected $_encoding = 'UTF-8';
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/**
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* @var array An array of Zend_Server_Reflect_Method
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*/
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protected $_functions = array();
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/**
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* @var array Array of headers to send
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*/
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protected $_headers = array();
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/**
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* @var array PHP's Magic Methods, these are ignored
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*/
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protected static $magicMethods = array(
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'__construct',
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'__destruct',
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'__get',
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'__set',
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'__call',
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'__sleep',
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'__wakeup',
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'__isset',
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'__unset',
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'__tostring',
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'__clone',
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'__set_state',
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);
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/**
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* @var string Current Method
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*/
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protected $_method;
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/**
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* @var Zend_Server_Reflection
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*/
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protected $_reflection = null;
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/**
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* Whether or not {@link handle()} should send output or return the response.
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* @var boolean Defaults to false
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*/
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protected $_returnResponse = false;
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/**
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* Constructor
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*/
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public function __construct()
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{
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set_exception_handler(array($this, "fault"));
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$this->_reflection = new Zend_Server_Reflection();
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}
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/**
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* Set XML encoding
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*
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* @param string $encoding
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* @return Zend_Rest_Server
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*/
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public function setEncoding($encoding)
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{
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$this->_encoding = (string) $encoding;
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return $this;
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}
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/**
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* Get XML encoding
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*
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* @return string
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*/
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public function getEncoding()
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{
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return $this->_encoding;
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}
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/**
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* Lowercase a string
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*
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* Lowercase's a string by reference
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*
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* @param string $value
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* @param string $key
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* @return string Lower cased string
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*/
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public static function lowerCase(&$value, &$key)
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{
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return $value = strtolower($value);
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}
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/**
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* Whether or not to return a response
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*
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* If called without arguments, returns the value of the flag. If called
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* with an argument, sets the flag.
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*
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* When 'return response' is true, {@link handle()} will not send output,
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* but will instead return the response from the dispatched function/method.
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*
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* @param boolean $flag
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* @return boolean|Zend_Rest_Server Returns Zend_Rest_Server when used to set the flag; returns boolean flag value otherwise.
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*/
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public function returnResponse($flag = null)
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{
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if (null === $flag) {
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return $this->_returnResponse;
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}
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$this->_returnResponse = ($flag) ? true : false;
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return $this;
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}
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/**
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* Implement Zend_Server_Interface::handle()
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*
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* @param array $request
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* @throws Zend_Rest_Server_Exception
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* @return string|void
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*/
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public function handle($request = false)
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{
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$this->_headers = array('Content-Type: text/xml');
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if (!$request) {
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$request = $_REQUEST;
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}
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if (isset($request['method'])) {
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$this->_method = $request['method'];
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if (isset($this->_functions[$this->_method])) {
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if ($this->_functions[$this->_method] instanceof Zend_Server_Reflection_Function || $this->_functions[$this->_method] instanceof Zend_Server_Reflection_Method && $this->_functions[$this->_method]->isPublic()) {
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$request_keys = array_keys($request);
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array_walk($request_keys, array(__CLASS__, "lowerCase"));
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$request = array_combine($request_keys, $request);
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$func_args = $this->_functions[$this->_method]->getParameters();
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$calling_args = array();
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foreach ($func_args as $arg) {
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if (isset($request[strtolower($arg->getName())])) {
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$calling_args[] = $request[strtolower($arg->getName())];
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} elseif ($arg->isOptional()) {
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$calling_args[] = $arg->getDefaultValue();
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}
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}
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foreach ($request as $key => $value) {
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if (substr($key, 0, 3) == 'arg') {
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$key = str_replace('arg', '', $key);
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$calling_args[$key] = $value;
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}
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}
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// Sort arguments by key -- @see ZF-2279
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ksort($calling_args);
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$result = false;
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if (count($calling_args) < count($func_args)) {
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require_once 'Zend/Rest/Server/Exception.php';
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$result = $this->fault(new Zend_Rest_Server_Exception('Invalid Method Call to ' . $this->_method . '. Requires ' . count($func_args) . ', ' . count($calling_args) . ' given.'), 400);
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}
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if (!$result && $this->_functions[$this->_method] instanceof Zend_Server_Reflection_Method) {
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// Get class
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$class = $this->_functions[$this->_method]->getDeclaringClass()->getName();
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if ($this->_functions[$this->_method]->isStatic()) {
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// for some reason, invokeArgs() does not work the same as
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// invoke(), and expects the first argument to be an object.
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// So, using a callback if the method is static.
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$result = $this->_callStaticMethod($class, $calling_args);
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} else {
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// Object method
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$result = $this->_callObjectMethod($class, $calling_args);
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}
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} elseif (!$result) {
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try {
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$result = call_user_func_array($this->_functions[$this->_method]->getName(), $calling_args); //$this->_functions[$this->_method]->invokeArgs($calling_args);
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} catch (Exception $e) {
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$result = $this->fault($e);
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}
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}
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} else {
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require_once "Zend/Rest/Server/Exception.php";
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$result = $this->fault(
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new Zend_Rest_Server_Exception("Unknown Method '$this->_method'."),
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404
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);
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}
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} else {
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require_once "Zend/Rest/Server/Exception.php";
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$result = $this->fault(
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new Zend_Rest_Server_Exception("Unknown Method '$this->_method'."),
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404
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);
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}
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} else {
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require_once "Zend/Rest/Server/Exception.php";
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$result = $this->fault(
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new Zend_Rest_Server_Exception("No Method Specified."),
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404
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);
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}
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if ($result instanceof SimpleXMLElement) {
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$response = $result->asXML();
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} elseif ($result instanceof DOMDocument) {
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$response = $result->saveXML();
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} elseif ($result instanceof DOMNode) {
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$response = $result->ownerDocument->saveXML($result);
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} elseif (is_array($result) || is_object($result)) {
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$response = $this->_handleStruct($result);
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} else {
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$response = $this->_handleScalar($result);
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}
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if (!$this->returnResponse()) {
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if (!headers_sent()) {
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foreach ($this->_headers as $header) {
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header($header);
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}
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}
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echo $response;
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return;
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}
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return $response;
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}
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/**
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* Implement Zend_Server_Interface::setClass()
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*
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* @param string $classname Class name
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* @param string $namespace Class namespace (unused)
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* @param array $argv An array of Constructor Arguments
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*/
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public function setClass($classname, $namespace = '', $argv = array())
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{
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$this->_args = $argv;
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foreach ($this->_reflection->reflectClass($classname, $argv)->getMethods() as $method) {
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$this->_functions[$method->getName()] = $method;
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}
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}
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/**
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* Handle an array or object result
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*
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* @param array|object $struct Result Value
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* @return string XML Response
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*/
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protected function _handleStruct($struct)
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{
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$function = $this->_functions[$this->_method];
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if ($function instanceof Zend_Server_Reflection_Method) {
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$class = $function->getDeclaringClass()->getName();
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} else {
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$class = false;
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}
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$method = $function->getName();
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$dom = new DOMDocument('1.0', $this->getEncoding());
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if ($class) {
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$root = $dom->createElement($class);
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$method = $dom->createElement($method);
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$root->appendChild($method);
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} else {
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$root = $dom->createElement($method);
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$method = $root;
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}
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$root->setAttribute('generator', 'zend');
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$root->setAttribute('version', '1.0');
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$dom->appendChild($root);
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$this->_structValue($struct, $dom, $method);
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$struct = (array) $struct;
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if (!isset($struct['status'])) {
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$status = $dom->createElement('status', 'success');
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$method->appendChild($status);
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}
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return $dom->saveXML();
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}
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/**
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* Recursively iterate through a struct
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*
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* Recursively iterates through an associative array or object's properties
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* to build XML response.
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*
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* @param mixed $struct
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* @param DOMDocument $dom
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* @param DOMElement $parent
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* @return void
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*/
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protected function _structValue($struct, DOMDocument $dom, DOMElement $parent)
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{
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$struct = (array) $struct;
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foreach ($struct as $key => $value) {
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if ($value === false) {
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$value = 0;
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} elseif ($value === true) {
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$value = 1;
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}
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if (ctype_digit((string) $key)) {
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$key = 'key_' . $key;
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}
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if (is_array($value) || is_object($value)) {
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$element = $dom->createElement($key);
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$this->_structValue($value, $dom, $element);
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} else {
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$element = $dom->createElement($key);
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$element->appendChild($dom->createTextNode($value));
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}
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$parent->appendChild($element);
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}
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}
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/**
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* Handle a single value
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||
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*
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||
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* @param string|int|boolean $value Result value
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||
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* @return string XML Response
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*/
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protected function _handleScalar($value)
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{
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$function = $this->_functions[$this->_method];
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if ($function instanceof Zend_Server_Reflection_Method) {
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$class = $function->getDeclaringClass()->getName();
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} else {
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$class = false;
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}
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$method = $function->getName();
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$dom = new DOMDocument('1.0', $this->getEncoding());
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if ($class) {
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$xml = $dom->createElement($class);
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||
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$methodNode = $dom->createElement($method);
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$xml->appendChild($methodNode);
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||
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} else {
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$xml = $dom->createElement($method);
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||
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$methodNode = $xml;
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||
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}
|
||
|
|
$xml->setAttribute('generator', 'zend');
|
||
|
|
$xml->setAttribute('version', '1.0');
|
||
|
|
$dom->appendChild($xml);
|
||
|
|
|
||
|
|
if ($value === false) {
|
||
|
|
$value = 0;
|
||
|
|
} elseif ($value === true) {
|
||
|
|
$value = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset($value)) {
|
||
|
|
$element = $dom->createElement('response');
|
||
|
|
$element->appendChild($dom->createTextNode($value));
|
||
|
|
$methodNode->appendChild($element);
|
||
|
|
} else {
|
||
|
|
$methodNode->appendChild($dom->createElement('response'));
|
||
|
|
}
|
||
|
|
|
||
|
|
$methodNode->appendChild($dom->createElement('status', 'success'));
|
||
|
|
|
||
|
|
return $dom->saveXML();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Implement Zend_Server_Interface::fault()
|
||
|
|
*
|
||
|
|
* Creates XML error response, returning DOMDocument with response.
|
||
|
|
*
|
||
|
|
* @param string|Exception $fault Message
|
||
|
|
* @param int $code Error Code
|
||
|
|
* @return DOMDocument
|
||
|
|
*/
|
||
|
|
public function fault($exception = null, $code = null)
|
||
|
|
{
|
||
|
|
if (isset($this->_functions[$this->_method])) {
|
||
|
|
$function = $this->_functions[$this->_method];
|
||
|
|
} elseif (isset($this->_method)) {
|
||
|
|
$function = $this->_method;
|
||
|
|
} else {
|
||
|
|
$function = 'rest';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($function instanceof Zend_Server_Reflection_Method) {
|
||
|
|
$class = $function->getDeclaringClass()->getName();
|
||
|
|
} else {
|
||
|
|
$class = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($function instanceof Zend_Server_Reflection_Function_Abstract) {
|
||
|
|
$method = $function->getName();
|
||
|
|
} else {
|
||
|
|
$method = $function;
|
||
|
|
}
|
||
|
|
|
||
|
|
$dom = new DOMDocument('1.0', $this->getEncoding());
|
||
|
|
if ($class) {
|
||
|
|
$xml = $dom->createElement($class);
|
||
|
|
$xmlMethod = $dom->createElement($method);
|
||
|
|
$xml->appendChild($xmlMethod);
|
||
|
|
} else {
|
||
|
|
$xml = $dom->createElement($method);
|
||
|
|
$xmlMethod = $xml;
|
||
|
|
}
|
||
|
|
$xml->setAttribute('generator', 'zend');
|
||
|
|
$xml->setAttribute('version', '1.0');
|
||
|
|
$dom->appendChild($xml);
|
||
|
|
|
||
|
|
$xmlResponse = $dom->createElement('response');
|
||
|
|
$xmlMethod->appendChild($xmlResponse);
|
||
|
|
|
||
|
|
if ($exception instanceof Exception) {
|
||
|
|
$element = $dom->createElement('message');
|
||
|
|
$element->appendChild($dom->createTextNode($exception->getMessage()));
|
||
|
|
$xmlResponse->appendChild($element);
|
||
|
|
$code = $exception->getCode();
|
||
|
|
} elseif (($exception !== null) || 'rest' == $function) {
|
||
|
|
$xmlResponse->appendChild($dom->createElement('message', 'An unknown error occured. Please try again.'));
|
||
|
|
} else {
|
||
|
|
$xmlResponse->appendChild($dom->createElement('message', 'Call to ' . $method . ' failed.'));
|
||
|
|
}
|
||
|
|
|
||
|
|
$xmlMethod->appendChild($xmlResponse);
|
||
|
|
$xmlMethod->appendChild($dom->createElement('status', 'failed'));
|
||
|
|
|
||
|
|
// Headers to send
|
||
|
|
if ($code === null || (404 != $code)) {
|
||
|
|
$this->_headers[] = 'HTTP/1.0 400 Bad Request';
|
||
|
|
} else {
|
||
|
|
$this->_headers[] = 'HTTP/1.0 404 File Not Found';
|
||
|
|
}
|
||
|
|
|
||
|
|
return $dom;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve any HTTP extra headers set by the server
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function getHeaders()
|
||
|
|
{
|
||
|
|
return $this->_headers;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Implement Zend_Server_Interface::addFunction()
|
||
|
|
*
|
||
|
|
* @param string $function Function Name
|
||
|
|
* @param string $namespace Function namespace (unused)
|
||
|
|
*/
|
||
|
|
public function addFunction($function, $namespace = '')
|
||
|
|
{
|
||
|
|
if (!is_array($function)) {
|
||
|
|
$function = (array) $function;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($function as $func) {
|
||
|
|
if (is_callable($func) && !in_array($func, self::$magicMethods)) {
|
||
|
|
$this->_functions[$func] = $this->_reflection->reflectFunction($func);
|
||
|
|
} else {
|
||
|
|
require_once 'Zend/Rest/Server/Exception.php';
|
||
|
|
throw new Zend_Rest_Server_Exception("Invalid Method Added to Service.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Implement Zend_Server_Interface::getFunctions()
|
||
|
|
*
|
||
|
|
* @return array An array of Zend_Server_Reflection_Method's
|
||
|
|
*/
|
||
|
|
public function getFunctions()
|
||
|
|
{
|
||
|
|
return $this->_functions;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Implement Zend_Server_Interface::loadFunctions()
|
||
|
|
*
|
||
|
|
* @todo Implement
|
||
|
|
* @param array $functions
|
||
|
|
*/
|
||
|
|
public function loadFunctions($functions)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Implement Zend_Server_Interface::setPersistence()
|
||
|
|
*
|
||
|
|
* @todo Implement
|
||
|
|
* @param int $mode
|
||
|
|
*/
|
||
|
|
public function setPersistence($mode)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Call a static class method and return the result
|
||
|
|
*
|
||
|
|
* @param string $class
|
||
|
|
* @param array $args
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
protected function _callStaticMethod($class, array $args)
|
||
|
|
{
|
||
|
|
try {
|
||
|
|
$result = call_user_func_array(array($class, $this->_functions[$this->_method]->getName()), $args);
|
||
|
|
} catch (Exception $e) {
|
||
|
|
$result = $this->fault($e);
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Call an instance method of an object
|
||
|
|
*
|
||
|
|
* @param string $class
|
||
|
|
* @param array $args
|
||
|
|
* @return mixed
|
||
|
|
* @throws Zend_Rest_Server_Exception For invalid class name
|
||
|
|
*/
|
||
|
|
protected function _callObjectMethod($class, array $args)
|
||
|
|
{
|
||
|
|
try {
|
||
|
|
if ($this->_functions[$this->_method]->getDeclaringClass()->getConstructor()) {
|
||
|
|
$object = $this->_functions[$this->_method]->getDeclaringClass()->newInstanceArgs($this->_args);
|
||
|
|
} else {
|
||
|
|
$object = $this->_functions[$this->_method]->getDeclaringClass()->newInstance();
|
||
|
|
}
|
||
|
|
} catch (Exception $e) {
|
||
|
|
require_once 'Zend/Rest/Server/Exception.php';
|
||
|
|
throw new Zend_Rest_Server_Exception('Error instantiating class ' . $class .
|
||
|
|
' to invoke method ' . $this->_functions[$this->_method]->getName() .
|
||
|
|
' (' . $e->getMessage() . ') ',
|
||
|
|
500);
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
$result = $this->_functions[$this->_method]->invokeArgs($object, $args);
|
||
|
|
} catch (Exception $e) {
|
||
|
|
$result = $this->fault($e);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
}
|