130 lines
2.9 KiB
PHP
130 lines
2.9 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Handles plugins that show the upload progress
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*
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* @package PhpMyAdmin
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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/**
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* constant for differenciating array in $_SESSION variable
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*/
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$SESSION_KEY = '__upload_status';
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/**
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* sets default plugin for handling the import process
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*/
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$_SESSION[$SESSION_KEY]["handler"] = "";
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/**
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* unique ID for each upload
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*/
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$upload_id = uniqid("");
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/**
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* list of available plugins
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*
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* Each plugin has own checkfunction in display_import_ajax.lib.php
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* and own file with functions in upload_#KEY#.php
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*/
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$plugins = array(
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// PHP 5.4 session-based upload progress is problematic, see bug 3964
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//"session",
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"progress",
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"apc",
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"noplugin"
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);
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// select available plugin
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foreach ($plugins as $plugin) {
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$check = "PMA_Import_" . $plugin . "Check";
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if ($check()) {
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$upload_class = "Upload" . ucwords($plugin);
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$_SESSION[$SESSION_KEY]["handler"] = $upload_class;
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include_once "plugins/import/upload/" . $upload_class . ".class.php";
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break;
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}
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}
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/**
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* Checks if APC bar extension is available and configured correctly.
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*
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* @return boolean true if APC extension is available and if rfc1867 is enabled,
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* false if it is not
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*/
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function PMA_Import_apcCheck()
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{
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if (! extension_loaded('apc')
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|| ! function_exists('apc_fetch')
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|| ! function_exists('getallheaders')
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) {
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return false;
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}
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return (ini_get('apc.enabled') && ini_get('apc.rfc1867'));
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}
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/**
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* Checks if UploadProgress bar extension is available.
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*
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* @return boolean true if UploadProgress extension is available,
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* false if it is not
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*/
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function PMA_Import_progressCheck()
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{
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if (! function_exists("uploadprogress_get_info")
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|| ! function_exists('getallheaders')
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) {
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return false;
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}
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return true;
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}
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/**
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* Checks if PHP 5.4 session upload-progress feature is available.
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*
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* @return boolean true if PHP 5.4 session upload-progress is available,
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* false if it is not
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*/
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function PMA_Import_sessionCheck()
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{
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if (PMA_PHP_INT_VERSION < 50400
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|| ! ini_get('session.upload_progress.enabled')
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) {
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return false;
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}
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return true;
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}
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/**
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* Default plugin for handling import.
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* If no other plugin is available, noplugin is used.
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*
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* @return boolean true
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*/
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function PMA_Import_nopluginCheck()
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{
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return true;
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}
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/**
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* The function outputs json encoded status of uploaded.
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* It uses PMA_getUploadStatus, which is defined in plugin's file.
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*
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* @param string $id ID of transfer, usually $upload_id
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* from display_import_ajax.lib.php
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*
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* @return void
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*/
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function PMA_importAjaxStatus($id)
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{
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header('Content-type: application/json');
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echo json_encode(
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$_SESSION[$GLOBALS['SESSION_KEY']]['handler']::getUploadStatus($id)
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);
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}
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?>
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