backup/backup.php

   1 <?php //$Id$
   2     //This script is used to configure and execute the backup proccess.
   3
   4     //Define some globals for all the script
   5
   6     require_once ("../config.php");
   7     require_once ("lib.php");
   8     require_once ("backuplib.php");
   9     require_once ("$CFG->libdir/blocklib.php");
  10
  11     $id = optional_param( 'id' );       // course id
  12     $to = optional_param( 'to' ); // id of course to import into afterwards.
  13     $cancel = optional_param( 'cancel' );
  14     $launch = optional_param( 'launch' );
  15
  16     require_login();
  17
  18     if (!empty($id)) {
  19         if (!isteacheredit($id)) {
  20             if (empty($to)) {
  21                 error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  22             } else {
  23                 if (!isteacheredit($to)) {
  24                     error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
  25                 }
  26             }
  27         }
  28     } else {
  29         if (!isadmin()) {
  30             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  31         }
  32     }
  33
  34     //Check site
  35     if (!$site = get_site()) {
  36         error("Site not found!");
  37     }
  38
  39     //Check necessary functions exists. Thanks to gregb@crowncollege.edu
  40     backup_required_functions();
  41
  42     //Check backup_version
  43     if ($id) {
  44         $linkto = "backup.php?id=".$id.((!empty($to)) ? '&to='.$to : '');
  45     } else {
  46         $linkto = "backup.php";
  47     }
  48     upgrade_backup_db($linkto);
  49
  50     //Get strings
  51     if (empty($to)) {
  52         $strcoursebackup = get_string("coursebackup");
  53     }
  54     else {
  55         $strcoursebackup = get_string('importdata');
  56     }
  57     $stradministration = get_string("administration");
  58
  59     //If cancel has been selected, go back to course main page (bug 2817)
  60     if ($cancel) {
  61         if ($id) {
  62             $redirecto = $CFG->wwwroot . '/course/view.php?id=' . $id; //Course page
  63         } else {
  64             $redirecto = $CFG->wwwroot;
  65         }
  66         redirect ($redirecto, get_string('backupcancelled')); //Site page
  67         exit;
  68     }
  69
  70     //If no course has been selected, show a list of available courses
  71
  72     if (!$id) {
  73         print_header("$site->shortname: $strcoursebackup", $site->fullname,
  74                      "<a href=\"$CFG->wwwroot/$CFG->admin/index.php\">$stradministration</a> -> $strcoursebackup");
  75
  76         if ($courses = get_courses('all','c.shortname','c.id,c.shortname,c.fullname')) {
  77             print_heading(get_string("choosecourse"));
  78             print_simple_box_start("center");
  79             foreach ($courses as $course) {
  80             echo "<a href=\"backup.php?id=$course->id\">$course->fullname ($course->shortname)</a><br />";
  81             }
  82             print_simple_box_end();
  83         } else {
  84             print_heading(get_string("nocoursesyet"));
  85             print_continue("$CFG->wwwroot/$CFG->admin/index.php");
  86         }
  87         print_footer();
  88         exit;
  89     }
  90
  91     //Get and check course
  92     if (! $course = get_record("course", "id", $id)) {
  93         error("Course ID was incorrect (can't find it)");
  94     }
  95
  96     check_for_restricted_user($USER->username, "$CFG->wwwroot/course/view.php?id=$course->id");
  97
  98     //Print header
  99     if (isadmin()) {
 100         print_header("$site->shortname: $strcoursebackup", $site->fullname,
 101                      "<a href=\"$CFG->wwwroot/$CFG->admin/index.php\">$stradministration</a> ->
 102                       <a href=\"backup.php\">$strcoursebackup</a> -> $course->fullname ($course->shortname)");
 103     } else {
 104         print_header("$course->shortname: $strcoursebackup", $course->fullname,
 105                      "<a href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->shortname</a> ->
 106                      $strcoursebackup");
 107     }
 108
 109     //Print form
 110     print_heading("$strcoursebackup: $course->fullname ($course->shortname)");
 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("128M");
 116
 117     //Call the form, depending the step we are
 118     if (!$launch) {
 119         include_once("backup_form.html");
 120     } else if ($launch == "check") {
 121         include_once("backup_check.html");
 122     } else if ($launch == "execute") {
 123         include_once("backup_execute.html");
 124     }
 125     print_simple_box_end();
 126
 127     //Print footer
 128     print_footer();
 129
 130 ?>