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