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($file)) {
   9         error ("File not specified");
  10     }
  11
  12     //Check login
  13     require_login();
  14
  15     //Check admin
  16     if (!empty($id)) {
  17         if (!isteacheredit($id)) {
  18             error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  19         }
  20     } else {
  21         if (!isadmin()) {
  22             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  23         }
  24     }
  25
  26     //Check site
  27     if (!$site = get_site()) {
  28         error("Site not found!");
  29     }
  30
  31     //Prepend dataroot to variable to have the absolute path
  32     $file = $CFG->dataroot."/".$file;
  33
  34     //Start the main table
  35     echo "<table cellpadding=5>";
  36     echo "<tr><td>";
  37
  38     //Start the mail ul
  39     echo "<ul>";
  40
  41     //Check the file exists
  42     if (!is_file($file)) {
  43         error ("File not exists ($file)");
  44     }
  45
  46     //Check the file name ends with .zip
  47     if (!substr($file,-4) == ".zip") {
  48         error ("File has an incorrect extension");
  49     }
  50
  51     //Now calculate the unique_code for this restore
  52     $backup_unique_code = time();
  53
  54     //Now check and create the backup dir (if it doesn't exist)
  55     $status = check_and_create_backup_dir($backup_unique_code);
  56     //Empty dir
  57     if ($status) {
  58         echo "<li>".get_string("creatingtemporarystructures");
  59         $status = clear_backup_dir($backup_unique_code);
  60     }
  61
  62     //Now delete old data and directories under dataroot/temp/backup
  63     if ($status) {
  64         echo "<li>".get_string("deletingolddata");
  65         $status = backup_delete_old_data();
  66     }
  67
  68     //Now copy he zip file to dataroot/temp/backup/backup_unique_code
  69     if ($status) {
  70         echo "<li>".get_string("copyingzipfile");
  71         $status = backup_copy_file($file,$CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file));
  72     }
  73
  74     //Now unzip the file
  75     if ($status) {
  76         echo "<li>".get_string("unzippingbackup");
  77         $status = restore_unzip ($CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file));
  78     }
  79
  80     //Now check for the moodle.xml file
  81     if ($status) {
  82         $xml_file  = $CFG->dataroot."/temp/backup/".$backup_unique_code."/moodle.xml";
  83         echo "<li>".get_string("checkingbackup");
  84         $status = restore_check_moodle_file ($xml_file);
  85     }
  86
  87     $info = "";
  88     $course_header = "";
  89
  90     //Now read the info tag (all)
  91     if ($status) {
  92         echo "<li>".get_string("readinginfofrombackup");
  93         //Reading info from file
  94         $info = restore_read_xml_info ($xml_file);
  95         //Reading course_header from file
  96         $course_header = restore_read_xml_course_header ($xml_file);
  97     }
  98
  99     //End the main ul
 100     echo "</ul>";
 101
 102     //End the main table
 103     echo "</tr></td>";
 104     echo "</table>";
 105
 106     //Now we print in other table, the backup and the course it contains info
 107     if ($info and $course_header and $status) {
 108         //First, the course info
 109         $status = restore_print_course_header($course_header);
 110         //Now, the backup info
 111         if ($status) {
 112             $status = restore_print_info($info);
 113         }
 114     }
 115
 116     //Save course header and info into php session
 117     if ($status) {
 118         $SESSION->info = $info;
 119         $SESSION->course_header = $course_header;
 120     }
 121
 122     //Finally, a little form to continue
 123     //with some hidden fields
 124     if ($status) {
 125         echo "<br><CENTER>";
 126         $hidden["backup_unique_code"] = $backup_unique_code;
 127         $hidden["launch"]             = "form";
 128         $hidden["file"]               =  $file;
 129         $hidden["id"]                 =  $id;
 130         print_single_button("restore.php", $hidden, get_string("continue"),"post");
 131         echo "</CENTER>";
 132     }
 133
 134     if (!$status) {
 135         error ("An error has ocurred");
 136     }
 137
 138 ?>