import_status.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Import progress bar backend
   5  *
   6  * @package PhpMyAdmin
   7  */
   8
   9 /* PHP 5.4 stores upload progress data only in the default session.
  10  * After calling session_name(), we won't find the progress data anymore.
  11  *
  12  * https://bugs.php.net/bug.php?id=64075
  13  *
  14  * The bug should be somewhere in
  15  * https://github.com/php/php-src/blob/master/ext/session/session.c#L2342
  16  *
  17  * Until this is fixed, we need to load the default session to load the data,
  18  * export the upload progress information from there,
  19  * and re-import after switching to our session.
  20  *
  21  * However, since https://github.com/phpmyadmin/phpmyadmin/commit/063a2d99
  22  * we have deactivated this feature, so the corresponding code is now
  23  * commented out.
  24  */
  25
  26 /*
  27 if (version_compare(PHP_VERSION, '5.4.0', '>=')
  28     && ini_get('session.upload_progress.enabled')
  29 ) {
  30
  31     $sessionupload = array();
  32     define('UPLOAD_PREFIX', ini_get('session.upload_progress.prefix'));
  33
  34     session_start();
  35     foreach ($_SESSION as $key => $value) {
  36         // only copy session-prefixed data
  37         if (mb_substr($key, 0, mb_strlen(UPLOAD_PREFIX))
  38             == UPLOAD_PREFIX) {
  39             $sessionupload[$key] = $value;
  40         }
  41     }
  42     // PMA will kill all variables, so let's use a constant
  43     define('SESSIONUPLOAD', serialize($sessionupload));
  44     session_write_close();
  45
  46     session_name('phpMyAdmin');
  47     session_id($_COOKIE['phpMyAdmin']);
  48 }
  49  */
  50
  51 define('PMA_MINIMUM_COMMON', 1);
  52
  53 require_once 'libraries/common.inc.php';
  54 require_once 'libraries/display_import_ajax.lib.php';
  55 list(
  56     $SESSION_KEY,
  57     $upload_id,
  58     $plugins
  59 ) = PMA_uploadProgressSetup();
  60
  61 /*
  62 if (defined('SESSIONUPLOAD')) {
  63     // write sessionupload back into the loaded PMA session
  64
  65     $sessionupload = unserialize(SESSIONUPLOAD);
  66     foreach ($sessionupload as $key => $value) {
  67         $_SESSION[$key] = $value;
  68     }
  69
  70     // remove session upload data that are not set anymore
  71     foreach ($_SESSION as $key => $value) {
  72         if (mb_substr($key, 0, mb_strlen(UPLOAD_PREFIX))
  73             == UPLOAD_PREFIX
  74             && ! isset($sessionupload[$key])
  75         ) {
  76             unset($_SESSION[$key]);
  77         }
  78     }
  79 }
  80  */
  81
  82 // AJAX requests can't be cached!
  83 PMA_noCacheHeader();
  84
  85 // $_GET["message"] is used for asking for an import message
  86 if (isset($_GET["message"]) && $_GET["message"]) {
  87
  88     header('Content-type: text/html');
  89
  90     // wait 0.3 sec before we check for $_SESSION variable,
  91     // which is set inside import.php
  92     usleep(300000);
  93
  94     $maximumTime = ini_get('max_execution_time');
  95     $timestamp = time();
  96     // wait until message is available
  97     while ($_SESSION['Import_message']['message'] == null) {
  98         // close session before sleeping
  99         session_write_close();
 100         // sleep
 101         usleep(250000); // 0.25 sec
 102         // reopen session
 103         session_start();
 104
 105         if ((time() - $timestamp) > $maximumTime) {
 106             $_SESSION['Import_message']['message'] = PMA\libraries\Message::error(
 107                 __('Could not load the progress of the import.')
 108             )->getDisplay();
 109             break;
 110         }
 111     }
 112
 113     echo $_SESSION['Import_message']['message'];
 114     echo '<fieldset class="tblFooters">' , "\n";
 115     echo '    [ <a href="' , $_SESSION['Import_message']['go_back_url']
 116         . '">' , __('Back') , '</a> ]' , "\n";
 117     echo '</fieldset>' , "\n";
 118
 119 } else {
 120     PMA_importAjaxStatus($_GET["id"]);
 121 }