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<?php
/**
* @version $Id: Ajax.php 10831 2013-05-29 19:32:17Z btowles $
* @author RocketTheme http://www.rockettheme.com
* @copyright Copyright (C) 2007 - 2020 RocketTheme, LLC
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
*/
defined('ROKCOMMON') or die;
/**
*
*/
class RokCommon_Ajax
{
const JSON_ENCODING = 'json';
const FORM_ENCODING = 'form';
/**
*
*/
const DEFAULT_MODEL_PREFIX = 'RokCommon_Ajax_Model_';
/**
* @param $path
* @param string $prefix
* @param int $priority
*
* @throws RokCommon_Ajax_Exception
*/
public static function addModelPath($path, $prefix = self::DEFAULT_MODEL_PREFIX, $priority = 10)
{
try {
$container = RokCommon_Service::getContainer();
/** @var $ajaxModelLoader RokCommon_ClassLoader_PrefixedLoader */
$ajaxModelLoader = $container->getService('ajax.model.loader');
$ajaxModelLoader->addPath($path, $prefix, $priority);
} catch (RokCommon_ClassLoader_Exception $e) {
throw new RokCommon_Ajax_Exception('Error adding model path.', 0, $e);
}
}
/**
* @param string $model
*
* @return RokCommon_Ajax_Model
*/
protected static function &getModel($model)
{
$container = RokCommon_Service::getContainer();
/** @var $ajaxModelLoader RokCommon_ClassLoader_PrefixedLoader */
$ajaxModelLoader = $container->getService('ajax.model.loader');
$model = $ajaxModelLoader->getItem($model, null, 'RokCommon_Ajax_Model');
return $model;
}
/**
* @param string $model
* @param string $action
* @param array $params
*
* @throws RokCommon_Ajax_Exception
* @return string
*/
public static function run($model, $action, $params, $encoding = self::JSON_ENCODING)
{
// Set up an independent AJAX error handler
set_error_handler(array('RokCommon_Ajax', 'error_handler'));
set_exception_handler(array('RokCommon_Ajax', 'exception_handler'));
while (@ob_end_clean()) ; // clean any pending output buffers
ob_start(); // start a fresh one
$result = null;
try {
// get a model class instance
$modelInstance = self::getModel($model);
if ($encoding == self::JSON_ENCODING) {
$decoded_params = json_decode($params);
if (null == $decoded_params && strlen($params) > 0) {
throw new RokCommon_Ajax_Exception('Invalid JSON for params');
}
$params = $decoded_params;
}
// set the result to the run
$result = $modelInstance->run($action, $params);
} catch (Exception $ae) {
$result = new RokCommon_Ajax_Result();
$result->setAsError();
$result->setMessage($ae->getMessage());
}
$encoded_result = json_encode($result);
// restore normal error handling;
restore_error_handler();
restore_exception_handler();
return $encoded_result;
}
/**
* @static
*
* @param Exception $exception
*/
public static function exception_handler(Exception $exception)
{
echo "Uncaught Exception: " . $exception->getMessage() . "\n";
echo '[' . $exception->getCode() . '] File: ' . $exception->getFile() . ' Line: ' . $exception->getLine();
}
/**
* @static
*
* @param $errno
* @param $errstr
* @param $errfile
* @param $errline
*
* @return bool
* @throws RokCommon_Ajax_Exception
*/
public static function error_handler($errno, $errstr, $errfile, $errline)
{
if (!(error_reporting() & $errno)) {
// This error code is not included in error_reporting
return;
}
switch ($errno) {
case E_USER_ERROR:
echo "ERROR [$errno] $errstr\n";
echo " Fatal error on line $errline in file $errfile";
echo ", PHP " . PHP_VERSION . " (" . PHP_OS . ")\n";
echo "Aborting...\n";
exit(1);
break;
case E_USER_WARNING:
echo "WARNING [$errno] $errstr\n";
break;
case E_USER_NOTICE:
echo "NOTICE [$errno] $errstr\n";
break;
case E_STRICT:
return false;
break;
default:
throw new RokCommon_Ajax_Exception("UNHANDLED ERROR [$errno] $errstr $errfile:$errline");
break;
}
/* Don't execute PHP internal error handler */
return true;
}
/**
* @param $str
*
* @return string
*/
public static function smartStripSlashes($str)
{
$cd1 = substr_count($str, "\"");
$cd2 = substr_count($str, "\\\"");
$cs1 = substr_count($str, "'");
$cs2 = substr_count($str, "\\'");
$tmp = strtr($str, array(
"\\\"" => "",
"\\'" => ""
));
$cb1 = substr_count($tmp, "\\");
$cb2 = substr_count($tmp, "\\\\");
if ($cd1 == $cd2 && $cs1 == $cs2 && $cb1 == 2 * $cb2) {
return strtr($str, array(
"\\\"" => "\"",
"\\'" => "'",
"\\\\" => "\\"
));
}
return $str;
}
}