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<?php
/**
* modConnectorResponse
*
* @package modx
*/
require_once MODX_CORE_PATH . 'model/modx/modresponse.class.php';
/**
* Encapsulates an HTTP response from the MODX manager.
*
* {@inheritdoc}
*
* @package modx
* @extends modResponse
*/
class modConnectorResponse extends modResponse {
/**
* The base location of the processors called by the connectors.
*
* @var string
* @access private
*/
protected $_directory;
public $responseCode = 200;
protected $_responseCodes = array(
100 => 'Continue',
101 => 'Switching Protocols',
200 => 'OK',
201 => 'Created',
202 => 'Accepted',
203 => 'Non-Authoritative Information',
204 => 'No Content',
205 => 'Reset Content',
206 => 'Partial Content',
300 => 'Multiple Choices',
301 => 'Moved Permanently',
302 => 'Found',
303 => 'See Other',
304 => 'Not Modified',
305 => 'Use Proxy',
306 => '(Unused)',
307 => 'Temporary Redirect',
400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed',
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported'
);
/**
* Creates a modConnectorResponse object.
*
* {@inheritdoc}
*/
function __construct(modX & $modx) {
parent :: __construct($modx);
$this->setDirectory();
}
/**
* Overrides modResponse::outputContent to provide connector-specific
* processing.
*
* {@inheritdoc}
*/
public function outputContent(array $options = array()) {
/* variable pointer for easier access */
$modx =& $this->modx;
/* backwards compat */
$error =& $this->modx->error;
/* prevent browsing of subdirectories for security */
$target = str_replace('../','', htmlspecialchars($options['action']));
$siteId = $this->modx->user->getUserToken($this->modx->context->get('key'));
$isLogin = $target == 'login';
/* ensure headers are sent for proper authentication */
if (!$isLogin && !isset($_SERVER['HTTP_MODAUTH']) && (!isset($_REQUEST['HTTP_MODAUTH']) || empty($_REQUEST['HTTP_MODAUTH']))) {
$this->responseCode = 401;
$this->body = $modx->error->failure($modx->lexicon('access_denied'),array('code' => 401));
} else if (!$isLogin && isset($_SERVER['HTTP_MODAUTH']) && $_SERVER['HTTP_MODAUTH'] != $siteId) {
$this->responseCode = 401;
$this->body = $modx->error->failure($modx->lexicon('access_denied'),array('code' => 401));
} else if (!$isLogin && isset($_REQUEST['HTTP_MODAUTH']) && $_REQUEST['HTTP_MODAUTH'] != $siteId) {
$this->responseCode = 401;
$this->body = $modx->error->failure($modx->lexicon('access_denied'),array('code' => 401));
/* verify the location and action */
} else if (!isset($options['location']) || !isset($options['action'])) {
$this->responseCode = 404;
$this->body = $this->modx->error->failure($modx->lexicon('action_err_ns'),array('code' => 404));
} else if (empty($options['action'])) {
$this->responseCode = 404;
$this->body = $this->modx->error->failure($modx->lexicon('action_err_ns'),array('code' => 404));
/* execute a processor and format the response */
} else {
/* create scriptProperties array from HTTP GPC vars */
if (!isset($_POST)) $_POST = array();
if (!isset($_GET)) $_GET = array();
$scriptProperties = array_merge($_GET,$_POST);
if (isset($_FILES) && !empty($_FILES)) {
$scriptProperties = array_merge($scriptProperties,$_FILES);
}
/* run processor */
$this->response = $this->modx->runProcessor($target,$scriptProperties,$options);
if (!$this->response) {
$this->responseCode = 404;
$this->body = $this->modx->error->failure($this->modx->lexicon('processor_err_nf',array(
'target' => $target,
)));
} else {
$this->body = $this->response->getResponse();
}
}
/* if files sent, this means that the browser needs it in text/plain,
* so ignore text/json header type
*/
if (!isset($_FILES)) {
header("Content-Type: application/json; charset=UTF-8");
$message = 'OK';
if (array_key_exists($this->responseCode,$this->_responseCodes)) {
$message = $this->_responseCodes[$this->responseCode];
}
header('Status: HTTP/1.1 '.$this->responseCode.' '.$message);
}
if (is_array($this->header)) {
foreach ($this->header as $header) header($header);
}
if (is_array($this->body)) {
@session_write_close();
die($this->modx->toJSON(array(
'success' => isset($this->body['success']) ? $this->body['success'] : 0,
'message' => isset($this->body['message']) ? $this->body['message'] : $this->modx->lexicon('error'),
'total' => (isset($this->body['total']) && $this->body['total'] > 0)
? intval($this->body['total'])
: (isset($this->body['errors'])
? count($this->body['errors'])
: 1),
'data' => isset($this->body['errors']) ? $this->body['errors'] : array(),
'object' => isset($this->body['object']) ? $this->body['object'] : array(),
)));
} else {
@session_write_close();
die($this->body);
}
}
/**
* Return arrays of objects (with count) converted to JSON.
*
* The JSON result includes two main elements, total and results. This format is used for list
* results.
*
* @access public
* @param array $array An array of data objects.
* @param mixed $count The total number of objects. Used for pagination.
* @return string The JSON output.
*/
public function outputArray(array $array,$count = false) {
if (!is_array($array)) return false;
if ($count === false) { $count = count($array); }
return '({"total":"'.$count.'","results":'.$this->modx->toJSON($array).'})';
}
/**
* Set the physical location of the processor directory for the response handler.
*
* This allows for dynamic processor locations.
*
* @access public
* @param string $dir The directory to set as the processors directory.
*/
public function setDirectory($dir = '') {
if ($dir == '') {
$this->_directory = $this->modx->getOption('processors_path');
} else {
$this->_directory = $dir;
}
}
/**
* Converts PHP to JSON with JavaScript literals left in-tact.
*
* JSON does not allow JavaScript literals, but this function encodes certain identifiable
* literals and decodes them back into literals after modX::toJSON() formats the data.
*
* @access public
* @param mixed $data The PHP data to be converted.
* @return string The extended JSON-encoded string.
*/
public function toJSON($data) {
if (is_array($data)) {
array_walk_recursive($data, array(&$this, '_encodeLiterals'));
}
return $this->_decodeLiterals($this->modx->toJSON($data));
}
/**
* Encodes certain JavaScript literal strings for later decoding.
*
* @access protected
* @param mixed &$value A reference to the value to be encoded if it is identified as a literal.
* @param integer|string $key The array key corresponding to the value.
*/
protected function _encodeLiterals(&$value, $key) {
if (is_string($value)) {
/* properly handle common literal structures */
if (strpos($value, 'function(') === 0
|| strpos($value, 'this.') === 0
|| strpos($value, 'new Function(') === 0
|| strpos($value, 'Ext.') === 0) {
$value = '@@' . base64_encode($value) . '@@';
}
}
}
/**
* Decodes strings encoded by _encodeLiterals to restore JavaScript literals.
*
* @access protected
* @param string $string The JSON-encoded string with encoded literals.
* @return string The JSON-encoded string with literals restored.
*/
protected function _decodeLiterals($string) {
$pattern = '/"@@(.*?)@@"/';
$string = preg_replace_callback(
$pattern,
create_function('$matches', 'return base64_decode($matches[1]);'),
$string
);
return $string;
}
}