libraries/display_import_ajax.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4 *
   5 * @package PhpMyAdmin
   6 */
   7
   8 if (!defined('PHPMYADMIN')) {
   9     exit;
  10 }
  11 /**
  12   * constant for differenciating array in $_SESSION variable
  13   */
  14 $SESSION_KEY = '__upload_status';
  15
  16 /**
  17   * sets default plugin for handling the import process
  18   */
  19 $_SESSION[$SESSION_KEY]["handler"] = "";
  20
  21 /**
  22   * unique ID for each upload
  23   */
  24 $upload_id = uniqid("");
  25
  26 /**
  27   * list of available plugins
  28   */
  29 $plugins = array(
  30        "uploadprogress",
  31        "apc",
  32        "noplugin"
  33        ); // available plugins. Each plugin has own checkfunction in display_import_ajax.lib.php and own file with functions in upload_#KEY#.php
  34
  35 // select available plugin
  36 foreach ($plugins as $plugin) {
  37     $check = "PMA_import_" . $plugin . "Check";
  38
  39     if ($check()) {
  40         $_SESSION[$SESSION_KEY]["handler"] = $plugin;
  41         include_once "import/upload/" . $plugin . ".php";
  42         break;
  43     }
  44 }
  45
  46 /**
  47   * Checks if APC bar extension is available and configured correctly.
  48   *
  49   * @return true if APC extension is available and if rfc1867 is enabled, false if it is not
  50   */
  51 function PMA_import_apcCheck()
  52 {
  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 {
  66     if (! function_exists("uploadprogress_get_info") || ! function_exists('getallheaders')) {
  67         return false;
  68     }
  69     return true;
  70 }
  71 /**
  72   * Default plugin for handling import. If no other plugin is available, noplugin is used.
  73   *
  74   * @return true
  75   */
  76 function PMA_import_nopluginCheck()
  77 {
  78     return true;
  79 }
  80
  81 /**
  82   * The function outputs json encoded status of uploaded. It uses PMA_getUploadStatus, which is defined in plugin's file.
  83   *
  84   * @param $id - ID of transfer, usually $upload_id from display_import_ajax.lib.php
  85   */
  86 function PMA_importAjaxStatus($id)
  87 {
  88     header('Content-type: application/json');
  89     echo json_encode(PMA_getUploadStatus($id));
  90 }
  91 ?>