backup/restore_check.html

   1 <?php //$Id$
   2     //This page receive all the restore_form data. Then, if existing course
   3     //has been selected, shows a list of courses to select one.
   4     //It cheks that the parammeter from restore_form are coherent.
   5     //It puts all the restore info in the session.
   6     //Finally, it calls restore_execute to do the hard work
   7
   8     //Get objects from session
   9     if ($SESSION) {
  10         $info = $SESSION->info;
  11         $course_header = $SESSION->course_header;
  12         if (isset($SESSION->restore)) {
  13             $restore = $SESSION->restore;
  14         }
  15     }
  16
  17     //If restore session info exists, but we are posting parameters
  18     //manually, this has prioriry
  19     if (isset($restore) and isset($restore_restoreto)) {
  20         unset($restore);
  21     }
  22
  23     // check for session objects
  24     if (empty($info) or empty($course_header)) {
  25       error( 'important information missing from SESSION' );
  26     }
  27
  28     //If the restore object doesn't exist, we are going
  29     //to check every variable individually and create it
  30
  31     if (!isset($restore)) {
  32         //Check that we have all we need
  33         //backup_unique_code
  34         $backup_unique_code = required_param( 'backup_unique_code' );
  35         //file
  36         $file = required_param( 'file');
  37         //Checks for the required restoremod parameters
  38         if ($allmods = get_records("modules")) {
  39             foreach ($allmods as $mod) {
  40                 $modname = $mod->name;
  41                 $var = "restore_".$modname;
  42                 $$var = required_param( $var);
  43                 $var = "restore_user_info_".$modname;
  44                 $$var = required_param( $var);
  45             }
  46         }
  47         //restoreto
  48         $restore_restoreto = required_param('restore_restoreto');
  49         //restore_metacourse
  50         $restore_metacourse = required_param('restore_metacourse');
  51         //restore_users
  52         $restore_users = required_param('restore_users');
  53         //restore_logs
  54         $restore_logs = required_param('restore_logs');
  55         //restore_user_files
  56         $restore_user_files = required_param('restore_user_files');
  57         //restore_course_files
  58         $restore_course_files = required_param('restore_course_files');
  59         //restore_messages
  60         $restore_messages = required_param('restore_messages');
  61
  62         //Check we've selected a course
  63         if (!isset($course_id)) {
  64             $course_id = 0;
  65         }
  66
  67         //We are here, having all we need !!
  68         //Create the restore object and put it in the session
  69         $restore->backup_unique_code = $backup_unique_code;
  70         $restore->file = $file;
  71         if ($allmods = get_records("modules")) {
  72             foreach ($allmods as $mod) {
  73                 $modname = $mod->name;
  74                 $var = "restore_".$modname;
  75                 $restore->mods[$modname]->restore=$$var;
  76                 $var = "restore_user_info_".$modname;
  77                 $restore->mods[$modname]->userinfo=$$var;
  78             }
  79         }
  80         $restore->restoreto=$restore_restoreto;
  81         $restore->metacourse=$restore_metacourse;
  82         $restore->users=$restore_users;
  83         $restore->logs=$restore_logs;
  84         $restore->user_files=$restore_user_files;
  85         $restore->course_files=$restore_course_files;
  86         $restore->messages=$restore_messages;
  87         $restore->course_id=$course_id;
  88     } else {
  89         //We have the object, so check if we have a new course_id
  90         //passed as parammeter
  91         if ($course_id) {
  92             $restore->course_id=$course_id;
  93         }
  94     }
  95     //We have the object with data, put it in the session
  96     $SESSION->restore = $restore;
  97
  98     //From here to the end of the script, only use the $restore object
  99
 100     //Check login
 101     require_login();
 102
 103     //Check admin
 104     if (!empty($id)) {
 105         if (!isteacheredit($id)) {
 106             error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
 107         }
 108     } else {
 109         if (!isadmin()) {
 110             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
 111         }
 112     }
 113
 114     //Check site
 115     if (!$site = get_site()) {
 116         error("Site not found!");
 117     }
 118
 119     //Depending the selected restoreto:
 120     // If user is a teacher (and not creator):
 121     //    0-Current course, deleting: Put $restore->course_id and $restore->deleting (true), create the restore object
 122     //    1-Current course, adding: Put $restore->course_id and $restore->deleting (false), create the restore object
 123     // If the uses is a creator:
 124     //    0-Existing course, deleting: Select the destination course and launch the check again, then
 125     //        put $restore->course_id and $restore->deleting (true), create the restore object.
 126     //    1-Existing course, adding: Select the destination course and launch the check again, then
 127     //        put $restore->course_id and $restore->deleting (false), create the restore object.
 128     //    2-New course: Create the restore object and launch the execute.
 129
 130     //If the user is a teacher and not a creator
 131     if (isteacheredit($id) and !iscreator()) {
 132         $restore->course_id = $id;
 133         if ($restore->restoreto == 0) {
 134             $restore->deleting = true;
 135         } else {
 136             $restore->deleting = false;
 137         }
 138     }
 139
 140     //If the user is a creator (or admin)
 141     if (iscreator()) {
 142         //Set restore->deleting as needed
 143         if ($restore->restoreto == 0) {
 144             $restore->deleting = true;
 145         } else {
 146             $restore->deleting = false;
 147         }
 148     }
 149
 150     //Now, select the course if needed
 151     if (($restore->restoreto == 0 or $restore->restoreto == 1) and ($restore->course_id == 0) and (iscreator())) {
 152         if ($courses = get_courses("all","c.fullname","c.id,c.fullname,c.shortname")) {
 153             print_heading(get_string("choosecourse"));
 154             print_simple_box_start("center");
 155             foreach ($courses as $course) {
 156                 echo "<a href=\"restore.php?course_id=$course->id&launch=check&id=$id&file=$file\">$course->fullname ($course->shortname)</a><br />";
 157             }
 158             print_simple_box_end();
 159         } else {
 160             print_heading(get_string("nocoursesyet"));
 161             print_continue("$CFG->wwwroot/$CFG->admin/index.php");
 162         }
 163     //Checks everything and execute restore
 164     } else if ((($restore->restoreto == 0 or $restore->restoreto == 1) and ($restore->course_id != 0)) or ($restore->restoreto == 2)) {
 165         $show_continue_button = true;
 166         //Check if we've selected any mod's user info and restore->users
 167         //is set to none. Change it to course and inform.
 168         if ($restore->users == 2) {
 169             $changed = false;
 170             $mods = $restore->mods;
 171             foreach ($mods as $mod) {
 172                 if ($mod->userinfo) {
 173                     $changed = true;
 174                 }
 175             }
 176             //If we have selected user files or messages, then users must be restored too
 177             if ($restore->user_files || $restore->messages) {
 178                 $changed = 1;
 179             }
 180             if ($changed) {
 181                 echo get_string ("noteuserschangednonetocourse");
 182                 echo "<hr noshade size=\"1\">";
 183                 $restore->users = 1;
 184             }
 185         }
 186         //Save the restore session object
 187         $SESSION->restore = $restore;
 188         if ($show_continue_button) {
 189             //Print the continue button to execute the restore NOW !!!!
 190             //All is prepared !!!
 191             echo "<center>";
 192             $hidden["launch"]             = "execute";
 193             $hidden["file"]               =  $file;
 194             $hidden["id"]                 =  $id;
 195             print_single_button("restore.php", $hidden, get_string("restorecoursenow"),"post");
 196             echo "</center>";
 197         } else {
 198             //Show error
 199             error ("Something was wrong checking restore preferences");
 200         }
 201
 202     //If we are here. Something must be wrong. Debug !!!
 203     } else {
 204         print_object($restore);
 205         print_object($info);
 206         print_object($course_header);
 207         error ("Something must be wrong");
 208     }
 209
 210 ?>