libraries/display_import_ajax.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4 *
   5 * @version $Id$
   6 * @package phpMyAdmin
   7 */
   8
   9 if (!defined('PHPMYADMIN')) {
  10     exit;
  11 }
  12 /**
  13   * constant for differenciating array in $_SESSION variable
  14   */
  15 $SESSION_KEY = '__upload_status';
  16
  17 /**
  18   * sets default plugin for handling the import process
  19   */
  20 $_SESSION[$SESSION_KEY]["handler"] = "";
  21
  22 /**
  23   * unique ID for each upload
  24   */
  25 $upload_id = uniqid("");
  26
  27 /**
  28   * list of available plugins
  29   */
  30 $plugins = array(
  31            "uploadprogress",
  32            "apc",
  33            "noplugin"
  34            ); // available plugins. Each plugin has own checkfunction in display_import_ajax.lib.php and own file with functions in upload_#KEY#.php
  35
  36 // select available plugin
  37 foreach ($plugins as $plugin) {
  38     $check = "PMA_import_" . $plugin . "Check";
  39
  40     if ($check()) {
  41         $_SESSION[$SESSION_KEY]["handler"] = $plugin;
  42         include_once("import/upload/" . $plugin . ".php");
  43         break;
  44     }
  45 }
  46
  47 /**
  48   * Checks if APC bar extension is available and configured correctly.
  49   *
  50   * @return true if APC extension is available and if rfc1867 is enabled, false if it is not
  51   */
  52 function PMA_import_apcCheck() {
  53     if (! extension_loaded('apc') || ! function_exists('apc_fetch') || ! function_exists('getallheaders')) {
  54         return false;
  55     }
  56     return (ini_get('apc.enabled') && ini_get('apc.rfc1867'));
  57 }
  58
  59 /**
  60   * Checks if UploadProgress bar extension is available.
  61   *
  62   * @return true if UploadProgress extension is available, false if it is not
  63   */
  64 function PMA_import_uploadprogressCheck() {
  65     if (! function_exists("uploadprogress_get_info") || ! function_exists('getallheaders')) {
  66         return false;
  67     }
  68     return true;
  69 }
  70 /**
  71   * Default plugin for handling import. If no other plugin is available, noplugin is used.
  72   *
  73   * @return true
  74   */
  75 function PMA_import_nopluginCheck() {
  76     return true;
  77 }
  78
  79 /**
  80   * The function outputs json encoded status of uploaded. It uses PMA_getUploadStatus, which is defined in plugin's file.
  81   *
  82   * @param $id - ID of transfer, usually $upload_id from display_import_ajax.lib.php
  83   */
  84 function PMA_importAjaxStatus($id) {
  85     header('Content-type: application/json');
  86     echo json_encode(PMA_getUploadStatus($id));
  87 }
  88 ?>