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