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     require_once("$CFG->libdir/adminlib.php");
  16
  17     //Optional
  18     $id = optional_param( 'id' );
  19     $file = optional_param( 'file' );
  20     $cancel = optional_param( 'cancel' );
  21     $launch = optional_param( 'launch' );
  22     $to = optional_param( 'to' );
  23     $method = optional_param( 'method' );
  24     $backup_unique_code = optional_param('backup_unique_code',0,PARAM_INT);
  25
  26     //Check login
  27     require_login();
  28
  29 /// With method=manual, we come from the FileManager so we delete all the backup/restore/import session structures
  30     if ($method == 'manual') {
  31         if (isset($SESSION->course_header)) {
  32             unset ($SESSION->course_header);
  33         }
  34         if (isset($SESSION->info)) {
  35             unset ($SESSION->info);
  36         }
  37         if (isset($SESSION->backupprefs)) {
  38             unset ($SESSION->backupprefs);
  39         }
  40         if (isset($SESSION->restore)) {
  41             unset ($SESSION->restore);
  42         }
  43         if (isset($SESSION->import_preferences)) {
  44             unset ($SESSION->import_preferences);
  45         }
  46     }
  47
  48     if (!$to && isset($SESSION->restore->restoreto) && isset($SESSION->restore->importing) && isset($SESSION->restore->course_id)) {
  49         $to = $SESSION->restore->course_id;
  50     }
  51
  52     if (!empty($id)) {
  53         require_login($id);
  54         if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $id))) {
  55             if (empty($to)) {
  56                 error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  57             } else {
  58                 if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $to))
  59                     && !has_capability('moodle/site:import',  get_context_instance(CONTEXT_COURSE, $to))) {
  60                     error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  61                 }
  62             }
  63         }
  64     } else {
  65         if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_SYSTEM))) {
  66             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  67         }
  68     }
  69
  70     //Check site
  71     if (!$site = get_site()) {
  72         error("Site not found!");
  73     }
  74
  75     //Check necessary functions exists. Thanks to gregb@crowncollege.edu
  76     backup_required_functions();
  77
  78     //Check backup_version
  79     if ($file) {
  80         $linkto = "restore.php?id=".$id."&amp;file=".$file;
  81     } else {
  82         $linkto = "restore.php";
  83     }
  84     upgrade_backup_db($linkto);
  85
  86     //Get strings
  87     if (empty($to)) {
  88         $strcourserestore = get_string("courserestore");
  89     } else {
  90         $strcourserestore = get_string("importdata");
  91     }
  92     $stradministration = get_string("administration");
  93
  94     //If no file has been selected from the FileManager, inform and end
  95     $navlinks = array();
  96     $navlinks[] = array('name' => $stradministration, 'link' => "$CFG->wwwroot/$CFG->admin/index.php", 'type' => 'misc');
  97     $navlinks[] = array('name' => $strcourserestore, 'link' => null, 'type' => 'misc');
  98     $navigation = build_navigation($navlinks);
  99
 100     if (!$file) {
 101         print_header("$site->shortname: $strcourserestore", $site->fullname, $navigation);
 102         print_heading(get_string("nofilesselected"));
 103         print_continue("$CFG->wwwroot/$CFG->admin/index.php");
 104         print_footer();
 105         exit;
 106     }
 107
 108     //If cancel has been selected, inform and end
 109     if ($cancel) {
 110         print_header("$site->shortname: $strcourserestore", $site->fullname, $navigation);
 111         print_heading(get_string("restorecancelled"));
 112         print_continue("$CFG->wwwroot/course/view.php?id=".$id);
 113         print_footer();
 114         exit;
 115     }
 116
 117     //We are here, so we have a file.
 118
 119     //Get and check course
 120     if (! $course = get_record("course", "id", $id)) {
 121         error("Course ID was incorrect (can't find it)");
 122     }
 123
 124     //Print header
 125     if (has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
 126         $navlinks[] = array('name' => basename($file), 'link' => null, 'type' => 'misc');
 127         $navigation = build_navigation($navlinks);
 128
 129         print_header("$site->shortname: $strcourserestore", $site->fullname, $navigation);
 130     } else {
 131         $navlinks = array();
 132         $navlinks[] = array('name' => $course->shortname, 'link' => "$CFG->wwwroot/course/view.php?id=$course->id", 'type' => 'misc');
 133         $navlinks[] = array('name' => $strcourserestore, 'link' => null, 'type' => 'misc');
 134         $navigation = build_navigation($navlinks);
 135         print_header("$course->shortname: $strcourserestore", $course->fullname, $navigation);
 136     }
 137     //Print form
 138     print_heading("$strcourserestore".((empty($to) ? ': '.basename($file) : '')));
 139     print_simple_box_start('center');
 140
 141     //Adjust some php variables to the execution of this script
 142     @ini_set("max_execution_time","3000");
 143     if (empty($CFG->extramemorylimit)) {
 144         raise_memory_limit('128M');
 145     } else {
 146         raise_memory_limit($CFG->extramemorylimit);
 147     }
 148
 149     //Call the form, depending the step we are
 150
 151     if (!$launch) {
 152         include_once("restore_precheck.html");
 153     } else if ($launch == "form") {
 154         if (!empty($SESSION->restore->importing)) {
 155             // set up all the config stuff and skip asking the user about it.
 156             restore_setup_for_check($SESSION->restore,$backup_unique_code);
 157             include_once("restore_execute.html");
 158         } else {
 159             include_once("restore_form.html");
 160         }
 161     } else if ($launch == "check") {
 162         include_once("restore_check.html");
 163         //To avoid multiple restore executions...
 164         $SESSION->cancontinue = true;
 165     } else if ($launch == "execute") {
 166         //Prevent multiple restore executions...
 167         if (empty($SESSION->cancontinue)) {
 168             error("Multiple restore execution not allowed!");
 169         }
 170         //Unset this for the future
 171         unset($SESSION->cancontinue);
 172         include_once("restore_execute.html");
 173     }
 174     print_simple_box_end();
 175
 176     //Print footer
 177     print_footer();
 178
 179 ?>