backup/restore.php

   1 <?php //$Id$
   2     //This script is used to configure and execute the restore proccess.
   3
   4     //Define some globals for all the script
   5
   6     //Units used
   7     require_once ("../config.php");
   8     require_once ("../lib/xmlize.php");
   9     require_once ("../course/lib.php");
  10     require_once ("lib.php");
  11     require_once ("restorelib.php");
  12     require_once ("bb/restore_bb.php");
  13     require_once("$CFG->libdir/blocklib.php");
  14     require_once("$CFG->libdir/wiki_to_markdown.php" );
  15
  16     //Optional
  17     $id = optional_param( 'id' );
  18     $file = optional_param( 'file' );;
  19     $cancel = optional_param( 'cancel' );
  20     $launch = optional_param( 'launch' );
  21     $to = optional_param( 'to' );
  22
  23     //Check login
  24     require_login();
  25
  26     if (!$to && isset($SESSION->restore->restoreto) && isset($SESSION->restore->importing) && isset($SESSION->restore->course_id)) {
  27         $to = $SESSION->restore->course_id;
  28     }
  29
  30     if (!empty($id)) {
  31         if (!isteacheredit($id)) {
  32             if (empty($to)) {
  33                 error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  34             } else {
  35                 if (!isteacheredit($to)) {
  36                     error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  37                 }
  38             }
  39         }
  40     } else {
  41         if (!isadmin()) {
  42             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  43         }
  44     }
  45
  46     //Check site
  47     if (!$site = get_site()) {
  48         error("Site not found!");
  49     }
  50
  51     //Check necessary functions exists. Thanks to gregb@crowncollege.edu
  52     backup_required_functions();
  53
  54     //Check backup_version
  55     if ($file) {
  56         $linkto = "restore.php?id=".$id."&amp;file=".$file;
  57     } else {
  58         $linkto = "restore.php";
  59     }
  60     upgrade_backup_db($linkto);
  61
  62     //Get strings
  63     if (empty($to)) {
  64         $strcourserestore = get_string("courserestore");
  65     } else {
  66         $strcourserestore = get_string("importdata");
  67     }
  68     $stradministration = get_string("administration");
  69
  70     //If no file has been selected from the FileManager, inform and end
  71     if (!$file) {
  72         print_header("$site->shortname: $strcourserestore", $site->fullname,
  73                      "<a href=\"$CFG->wwwroot/$CFG->admin/index.php\">$stradministration</a> -> $strcourserestore");
  74         print_heading(get_string("nofilesselected"));
  75         print_continue("$CFG->wwwroot/$CFG->admin/index.php");
  76         print_footer();
  77         exit;
  78     }
  79
  80     //If cancel has been selected, inform and end
  81     if ($cancel) {
  82         print_header("$site->shortname: $strcourserestore", $site->fullname,
  83                      "<a href=\"$CFG->wwwroot/$CFG->admin/index.php\">$stradministration</a> -> $strcourserestore");
  84         print_heading(get_string("restorecancelled"));
  85         print_continue("$CFG->wwwroot/$CFG->admin/index.php");
  86         print_footer();
  87         exit;
  88     }
  89
  90     //We are here, so me have a file.
  91
  92     //Get and check course
  93     if (! $course = get_record("course", "id", $id)) {
  94         error("Course ID was incorrect (can't find it)");
  95     }
  96
  97     check_for_restricted_user($USER->username, "$CFG->wwwroot/course/view.php?id=$course->id");
  98
  99     //Print header
 100     if (isadmin()) {
 101         print_header("$site->shortname: $strcourserestore", $site->fullname,
 102                      "<a href=\"$CFG->wwwroot/$CFG->admin/index.php\">$stradministration</a> ->
 103                       $strcourserestore -> ".basename($file));
 104     } else {
 105         print_header("$course->shortname: $strcourserestore", $course->fullname,
 106                      "<a href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->shortname</a> ->
 107                      $strcourserestore");
 108     }
 109     //Print form
 110     print_heading("$strcourserestore".((empty($to) ? ': '.basename($file) : '')));
 111     print_simple_box_start('center');
 112
 113     //Adjust some php variables to the execution of this script
 114     @ini_set("max_execution_time","3000");
 115     raise_memory_limit("memory_limit","128M");
 116
 117     //Call the form, depending the step we are
 118
 119
 120     if (!$launch) {
 121         include_once("restore_precheck.html");
 122     } else if ($launch == "form") {
 123         if ($SESSION->restore->importing) {
 124             // set up all the config stuff and skip asking the user about it.
 125             restore_setup_for_check($SESSION->restore,$backup_unique_code);
 126             include_once("restore_execute.html");
 127         } else {
 128             include_once("restore_form.html");
 129         }
 130     } else if ($launch == "check") {
 131         include_once("restore_check.html");
 132         //To avoid multiple restore executions...
 133         $SESSION->cancontinue = true;
 134     } else if ($launch == "execute") {
 135         //Prevent multiple restore executions...
 136         if (empty($SESSION->cancontinue)) {
 137             error("Multiple restore execution not allowed!");
 138         }
 139         //Unset this for the future
 140         unset($SESSION->cancontinue);
 141         include_once("restore_execute.html");
 142     }
 143     print_simple_box_end();
 144
 145     //Print footer
 146     print_footer();
 147
 148 ?>