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     //Get and check course
  27     if (! $course = get_record("course", "id", $id)) {
  28         error("Course ID was incorrect (can't find it)");
  29     }
  30     // To some reasons, course_startdateoffset value was lost during restoring
  31     // See MDL-17469
  32     if (!empty($course->startdate) && !empty($SESSION->course_header->course_startdate)) {
  33         $SESSION->restore->course_startdateoffset = $course->startdate - $SESSION->course_header->course_startdate;
  34     } else {
  35         $SESSION->restore->course_startdateoffset = 0;
  36     }
  37
  38     //Check login
  39     require_login();
  40
  41 /// With method=manual, we come from the FileManager so we delete all the backup/restore/import session structures
  42     if ($method == 'manual') {
  43         if (isset($SESSION->course_header)) {
  44             unset ($SESSION->course_header);
  45         }
  46         if (isset($SESSION->info)) {
  47             unset ($SESSION->info);
  48         }
  49         if (isset($SESSION->backupprefs)) {
  50             unset ($SESSION->backupprefs);
  51         }
  52         if (isset($SESSION->restore)) {
  53             unset ($SESSION->restore);
  54         }
  55         if (isset($SESSION->import_preferences)) {
  56             unset ($SESSION->import_preferences);
  57         }
  58     }
  59
  60     if (!$to && isset($SESSION->restore->restoreto) && isset($SESSION->restore->importing) && isset($SESSION->restore->course_id)) {
  61         $to = $SESSION->restore->course_id;
  62     }
  63
  64     if (!empty($id)) {
  65         require_login($id);
  66         if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $id))) {
  67             if (empty($to)) {
  68                 error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  69             } else {
  70                 if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $to))
  71                     && !has_capability('moodle/site:import',  get_context_instance(CONTEXT_COURSE, $to))) {
  72                     error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  73                 }
  74             }
  75         }
  76     } else {
  77         if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_SYSTEM))) {
  78             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  79         }
  80     }
  81
  82     //Check site
  83     if (!$site = get_site()) {
  84         error("Site not found!");
  85     }
  86
  87     //Check necessary functions exists. Thanks to gregb@crowncollege.edu
  88     backup_required_functions();
  89
  90     //Check backup_version
  91     if ($file) {
  92         $linkto = "restore.php?id=".$id."&amp;file=".$file;
  93     } else {
  94         $linkto = "restore.php";
  95     }
  96     upgrade_backup_db($linkto);
  97
  98     //Get strings
  99     if (empty($to)) {
 100         $strcourserestore = get_string("courserestore");
 101     } else {
 102         $strcourserestore = get_string("importdata");
 103     }
 104     $stradministration = get_string("administration");
 105
 106     //If no file has been selected from the FileManager, inform and end
 107     $navlinks = array();
 108     $navlinks[] = array('name' => $stradministration, 'link' => "$CFG->wwwroot/$CFG->admin/index.php", 'type' => 'misc');
 109     $navlinks[] = array('name' => $strcourserestore, 'link' => null, 'type' => 'misc');
 110     $navigation = build_navigation($navlinks);
 111
 112     if (!$file) {
 113         print_header("$site->shortname: $strcourserestore", $site->fullname, $navigation);
 114         print_heading(get_string("nofilesselected"));
 115         print_continue("$CFG->wwwroot/$CFG->admin/index.php");
 116         print_footer();
 117         exit;
 118     }
 119
 120     //If cancel has been selected, inform and end
 121     if ($cancel) {
 122         print_header("$site->shortname: $strcourserestore", $site->fullname, $navigation);
 123         print_heading(get_string("restorecancelled"));
 124         print_continue("$CFG->wwwroot/course/view.php?id=".$id);
 125         print_footer();
 126         exit;
 127     }
 128
 129     //We are here, so me have a file.
 130
 131     //Print header
 132     if (has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
 133         $navlinks[] = array('name' => basename($file), 'link' => null, 'type' => 'misc');
 134         $navigation = build_navigation($navlinks);
 135
 136         print_header("$site->shortname: $strcourserestore", $site->fullname, $navigation);
 137     } else {
 138         $navlinks = array();
 139         $navlinks[] = array('name' => $course->shortname, 'link' => "$CFG->wwwroot/course/view.php?id=$course->id", 'type' => 'misc');
 140         $navlinks[] = array('name' => $strcourserestore, 'link' => null, 'type' => 'misc');
 141         $navigation = build_navigation($navlinks);
 142         print_header("$course->shortname: $strcourserestore", $course->fullname, $navigation);
 143     }
 144     //Print form
 145     print_heading("$strcourserestore".((empty($to) ? ': '.basename($file) : '')));
 146     print_simple_box_start('center');
 147
 148     //Adjust some php variables to the execution of this script
 149     @ini_set("max_execution_time","3000");
 150     raise_memory_limit("192M");
 151
 152     //Call the form, depending the step we are
 153
 154     if (!$launch) {
 155         include_once("restore_precheck.html");
 156     } else if ($launch == "form") {
 157         if (!empty($SESSION->restore->importing)) {
 158             // set up all the config stuff and skip asking the user about it.
 159             restore_setup_for_check($SESSION->restore,$backup_unique_code);
 160             include_once("restore_execute.html");
 161         } else {
 162             include_once("restore_form.html");
 163         }
 164     } else if ($launch == "check") {
 165         include_once("restore_check.html");
 166         //To avoid multiple restore executions...
 167         $SESSION->cancontinue = true;
 168     } else if ($launch == "execute") {
 169         //Prevent multiple restore executions...
 170         if (empty($SESSION->cancontinue)) {
 171             error("Multiple restore execution not allowed!");
 172         }
 173         //Unset this for the future
 174         unset($SESSION->cancontinue);
 175         include_once("restore_execute.html");
 176     }
 177     print_simple_box_end();
 178
 179     //Print footer
 180     print_footer();
 181
 182 ?>