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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Handles plugins that show the upload progress
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* constant for differenciating 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
*
* Each plugin has own checkfunction in display_import_ajax.lib.php
* and own file with functions in upload_#KEY#.php
*/
$plugins = array(
// PHP 5.4 session-based upload progress is problematic, see bug 3964
//"session",
"progress",
"apc",
"noplugin"
);
// select available plugin
foreach ($plugins as $plugin) {
$check = "PMA_import_" . $plugin . "Check";
if ($check()) {
$upload_class = "Upload" . ucwords($plugin);
$_SESSION[$SESSION_KEY]["handler"] = $upload_class;
include_once "plugins/import/upload/" . $upload_class . ".class.php";
break;
}
}
/**
* 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
*/
function PMA_import_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 UploadProgress bar extension is available.
*
* @return boolean true if UploadProgress extension is available,
* false if it is not
*/
function PMA_import_progressCheck()
{
if (! function_exists("uploadprogress_get_info")
|| ! function_exists('getallheaders')
) {
return false;
}
return true;
}
/**
* 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
*/
function PMA_import_sessionCheck()
{
if (PMA_PHP_INT_VERSION < 50400
|| ! ini_get('session.upload_progress.enabled')
) {
return false;
}
return true;
}
/**
* Default plugin for handling import.
* If no other plugin is available, noplugin is used.
*
* @return boolean true
*/
function PMA_import_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 $upload_id
* from display_import_ajax.lib.php
*
* @return void
*/
function PMA_importAjaxStatus($id)
{
header('Content-type: application/json');
echo json_encode(
call_user_func(
$_SESSION[$GLOBALS['SESSION_KEY']]['handler'] . '::getUploadStatus',
$id
)
);
}
?>