backup/restore_precheck.html

   1 <?PHP  // $Id$
   2     //This page copies th zip to the temp directory,
   3     //unzip it, check that it is a valid backup file
   4     //inform about its contents and fill all the necesary
   5     //variables to continue with the restore.
   6
   7     //Checks we have the file variable
   8     if (!isset($file)) {
   9         error ("File not specified");
  10     }
  11
  12     //Check login
  13     require_login();
  14
  15     //Check admin
  16     if (!isadmin()) {
  17         error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  18     }
  19
  20     //Check site
  21     if (!$site = get_site()) {
  22         error("Site not found!");
  23     }
  24
  25     //Prepend dataroot to variable to have the absolute path
  26     $file = $CFG->dataroot."/".$file;
  27
  28     //Start the main table
  29     echo "<table cellpadding=5>";
  30     echo "<tr><td>";
  31
  32     //Start the mail ul
  33     echo "<ul>";
  34
  35     //Check the file exists
  36     if (!is_file($file)) {
  37         error ("File not exists ($file)");
  38     }
  39
  40     //Check the file name ends with .zip
  41     if (!substr($file,-4) == ".zip") {
  42         error ("File has an incorrect extension");
  43     }
  44
  45     //Now calculate the unique_code for this restore
  46     $backup_unique_code = time();
  47
  48     //Now check and create the backup dir (if it doesn't exist)
  49     $status = check_and_create_backup_dir($backup_unique_code);
  50     //Empty dir
  51     if ($status) {
  52         echo "<li>Creating temp dir";
  53         $status = clear_backup_dir($backup_unique_code);
  54     }
  55
  56     //Now delete old data and directories under dataroot/temp/backup
  57     if ($status) {
  58         echo "<li>Cleaning old data";
  59         $status = backup_delete_old_data();
  60     }
  61
  62     //Now copy he zip file to dataroot/temp/backup/backup_unique_code
  63     if ($status) {
  64         $status = backup_copy_file($file,$CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file));
  65     }
  66
  67     //Now unzip the file
  68     if ($status) {
  69         echo "<li>Retrieving backup file";
  70         $status = restore_unzip ($CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file),$moodle_home);
  71     }
  72
  73     //Now check for the moodle.xml file
  74     if ($status) {
  75         $xml_file  = $CFG->dataroot."/temp/backup/".$backup_unique_code."/moodle.xml";
  76         echo "<li>Checking backup file";
  77         $status = restore_check_moodle_file ($xml_file);
  78     }
  79
  80     $info = "";
  81     $course_header = "";
  82
  83     //Now read the info tag (all)
  84     if ($status) {
  85         echo "<li>Reading info from file";
  86         //Reading info from file
  87         $info = restore_read_xml_info ($xml_file);
  88         //Reading course_header from file
  89         $course_header = restore_read_xml_course_header ($xml_file);
  90     }
  91
  92     //End the main ul
  93     echo "</ul>";
  94
  95     //End the main table
  96     echo "</tr></td>";
  97     echo "</table>";
  98
  99     //Now we print in other table, the backup and the course it contains info
 100     if ($info and $course_header and $status) {
 101         //First, the course info
 102         $status = restore_print_course_header($course_header);
 103         //Now, the backup info
 104         if ($status) {
 105             $status = restore_print_info($info);
 106         }
 107     }
 108
 109     //Save course header and info into php session
 110     if ($status) {
 111         $SESSION->info = $info;
 112         $SESSION->course_header = $course_header;
 113     }
 114
 115     //Finally, a little form to continue
 116     //with some hidden fields
 117     if ($status) {
 118         echo "<br><CENTER>";
 119         $hidden["backup_unique_code"] = $backup_unique_code;
 120         $hidden["launch"]             = "form";
 121         $hidden["file"]               =  $file;
 122         print_single_button("restore.php", $hidden, get_string("continue"),"post");
 123         echo "</CENTER>";
 124     }
 125
 126     if (!$status) {
 127         error ("An error has ocurred");
 128     }
 129
 130 ?>