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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Handles plugins that show the upload progress
*
* @package PhpMyAdmin
*/
declare(strict_types=1);
namespace PhpMyAdmin\Display;
use PhpMyAdmin\Core;
/**
* PhpMyAdmin\Display\ImportAjax class
*
* @package PhpMyAdmin
*/
class ImportAjax
{
/**
* Sets up some variables for upload progress
*
* @return array
*/
public static function uploadProgressSetup()
{
/**
* constant for differentiating array in $_SESSION variable
*/
$SESSION_KEY = '__upload_status';
/**
* sets default plugin for handling the import process
*/
$_SESSION[$SESSION_KEY]["handler"] = "";
/**
* unique ID for each upload
*/
$upload_id = uniqid("");
/**
* list of available plugins
*/
$plugins = [
// PHP 5.4 session-based upload progress is problematic, see bug 3964
//"session",
"progress",
"apc",
"noplugin",
];
// select available plugin
foreach ($plugins as $plugin) {
$check = $plugin . "Check";
if (self::$check()) {
$upload_class = 'PhpMyAdmin\Plugins\Import\Upload\Upload' . ucwords(
$plugin
);
$_SESSION[$SESSION_KEY]["handler"] = $upload_class;
break;
}
}
return [
$SESSION_KEY,
$upload_id,
$plugins,
];
}
/**
* Checks if APC bar extension is available and configured correctly.
*
* @return boolean true if APC extension is available and if rfc1867 is enabled,
* false if it is not
*/
public static function apcCheck()
{
if (! extension_loaded('apc')
|| ! function_exists('apc_fetch')
|| ! function_exists('getallheaders')
) {
return false;
}
return (ini_get('apc.enabled') && ini_get('apc.rfc1867'));
}
/**
* Checks if PhpMyAdmin\Plugins\Import\Upload\UploadProgress bar extension is
* available.
*
* @return boolean true if PhpMyAdmin\Plugins\Import\Upload\UploadProgress
* extension is available, false if it is not
*/
public static function progressCheck()
{
return function_exists("uploadprogress_get_info")
&& function_exists('getallheaders');
}
/**
* Checks if PHP 5.4 session upload-progress feature is available.
*
* @return boolean true if PHP 5.4 session upload-progress is available,
* false if it is not
*/
public static function sessionCheck()
{
return ini_get('session.upload_progress.enabled');
}
/**
* Default plugin for handling import.
* If no other plugin is available, noplugin is used.
*
* @return boolean true
*/
public static function nopluginCheck()
{
return true;
}
/**
* The function outputs json encoded status of uploaded.
* It uses PMA_getUploadStatus, which is defined in plugin's file.
*
* @param string $id ID of transfer, usually $upload_id
*
* @return void
*/
public static function status($id)
{
Core::headerJSON();
echo json_encode(
$_SESSION[$GLOBALS['SESSION_KEY']]['handler']::getUploadStatus($id)
);
}
}
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