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     //Get objects from session
   8     if ($SESSION) {
   9         $info = $SESSION->info;
  10         $course_header = $SESSION->course_header;
  11         if (isset($SESSION->restore)) {
  12             $restore = $SESSION->restore;
  13         }
  14     }
  15
  16     //Detect if we are coming from the restore form
  17     $fromform = optional_param ('fromform', 0, PARAM_INT);
  18
  19     if ($form1 = data_submitted()) {
  20         $currentcourseshortname = $course_header->course_shortname; //"store_ShortName";
  21         $course_header->course_shortname =  $form1->shortname;  //"update_ShortName";
  22         $course_header->course_fullname =   $form1->fullname;   //"update_FullName";
  23         $form1->startdate = make_timestamp($form1->startyear, $form1->startmonth, $form1->startday);
  24         $currentcoursestartdate = $course_header->course_startdate;
  25         $coursestartdatedateoffset = $form1->startdate - $currentcoursestartdate;
  26         $restore->course_startdateoffset = $coursestartdatedateoffset; //change to restore
  27     }
  28
  29     //If restore session info exists, but we are coming from the form
  30     //it has prioriry
  31     if (isset($restore) and !empty($fromform)) {
  32         unset($restore);
  33     }
  34
  35     // check for session objects
  36     if (empty($info) or empty($course_header)) {
  37       error( 'important information missing from SESSION' );
  38     }
  39
  40     //If the restore object doesn't exist, we are going
  41     //to check every variable individually and create it
  42
  43     if (!isset($restore)) {
  44         //Check that we have all we need
  45         //backup_unique_code
  46         $backup_unique_code = required_param( 'backup_unique_code' );
  47         //file
  48         $file = required_param( 'file');
  49         //Checks for the required restoremod parameters
  50         if ($allmods = get_records("modules")) {
  51             foreach ($allmods as $mod) {
  52                 $modname = $mod->name;
  53                 $var = "restore_".$modname;
  54                 $$var = optional_param( $var,0);
  55                 $var = "restore_user_info_".$modname;
  56                 $$var = optional_param( $var,0);
  57                 $instances = !empty($info->mods[$mod->name]->instances) ? $info->mods[$mod->name]->instances : NULL;
  58                 if ($instances === NULL) {
  59                     continue;
  60                 }
  61                 foreach ($instances as $instance) {
  62                     $var = 'restore_'.$modname.'_instance_'.$instance->id;
  63                     $$var = optional_param($var,0);
  64                     $var = 'restore_user_info_'.$modname.'_instance_'.$instance->id;
  65                     $$var = optional_param($var,0);
  66                 }
  67             }
  68         }
  69         //restoreto
  70         $restore_restoreto = required_param('restore_restoreto');
  71         //restore_metacourse
  72         $restore_metacourse = required_param('restore_metacourse');
  73         //restore_users
  74         $restore_users = required_param('restore_users');
  75         //restore_logs
  76         $restore_logs = required_param('restore_logs');
  77         //restore_user_files
  78         $restore_user_files = required_param('restore_user_files');
  79         //restore_course_files
  80         $restore_course_files = required_param('restore_course_files');
  81         //restore_messages
  82         $restore_messages = required_param('restore_messages');
  83
  84         //Check we've selected a course to restore to
  85         $course_id = optional_param('course_id', 0, PARAM_INT);
  86
  87         //We are here, having all we need !!
  88         //Create the restore object and put it in the session
  89         $restore->backup_unique_code = $backup_unique_code;
  90         $restore->file = $file;
  91         if ($allmods = get_records("modules")) {
  92             foreach ($allmods as $mod) {
  93                 $modname = $mod->name;
  94                 $var = "restore_".$modname;
  95                 $restore->mods[$modname]->restore=$$var;
  96                 $var = "restore_user_info_".$modname;
  97                 $restore->mods[$modname]->userinfo=$$var;
  98                 $instances = !empty($info->mods[$mod->name]->instances) ? $info->mods[$mod->name]->instances : NULL;
  99                 if ($instances === NULL) {
 100                     continue;
 101                 }
 102                 foreach ($instances as $instance) {
 103                     $var = 'restore_'.$modname.'_instance_'.$instance->id;
 104                     $restore->mods[$modname]->instances[$instance->id]->restore = $$var;
 105                     $var = 'restore_user_info_'.$modname.'_instance_'.$instance->id;
 106                     $restore->mods[$modname]->instances[$instance->id]->userinfo = $$var;
 107                 }
 108             }
 109         }
 110         $restore->restoreto=$restore_restoreto;
 111         $restore->metacourse=$restore_metacourse;
 112         $restore->users=$restore_users;
 113         $restore->logs=$restore_logs;
 114         $restore->user_files=$restore_user_files;
 115         $restore->course_files=$restore_course_files;
 116         $restore->messages=$restore_messages;
 117         $restore->course_id=$course_id;
 118         //add new vars to restore object
 119         $restore->course_startdateoffset = $coursestartdatedateoffset;
 120         $restore->course_shortname = $currentcourseshortname;
 121
 122         // create role mappings, not sure all should be here
 123         if ($data2 = data_submitted()) {
 124             foreach ($data2 as $tempname=>$tempdata) {
 125                 if (strstr($tempname, 'roles_')) {
 126                     $temprole = explode('_', $tempname);
 127                     $oldroleid = $temprole[1];
 128                     $newroleid = $tempdata;
 129                     $restore->rolesmapping[$oldroleid] = $newroleid;
 130                 }
 131             }
 132         }
 133
 134         // default role mapping for moodle < 1.7
 135         if ($defaultteacheredit = optional_param('defaultteacheredit', 0, PARAM_INT)) {
 136             $restore->rolesmapping['defaultteacheredit'] = $defaultteacheredit;
 137         }
 138         if ($defaultteacher = optional_param('defaultteacher', 0, PARAM_INT)) {
 139             $restore->rolesmapping['defaultteacher'] = $defaultteacher;
 140         }
 141         if ($defaultstudent = optional_param('defaultstudent', 0, PARAM_INT)) {
 142             $restore->rolesmapping['defaultstudent'] = $defaultstudent;
 143         }
 144
 145     } else {
 146         //We have the object, so check if we have a new course_id
 147         //passed as parammeter
 148         $course_id = optional_param('course_id', 0, PARAM_INT);
 149         if ($course_id) {
 150             $restore->course_id=$course_id;
 151         }
 152     }
 153     //We have the object with data, put it in the session
 154     $SESSION->restore = $restore;
 155
 156     //From here to the end of the script, only use the $restore object
 157
 158     //Check login
 159     require_login();
 160
 161     //Check admin
 162     if (!empty($id)) {
 163         if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $id))) {
 164             error("You need to be a teacher or admin user to use this page.", "$CFG->wwwroot/login/index.php");
 165         }
 166     } else {
 167         if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
 168             error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
 169         }
 170     }
 171
 172     //Check site
 173     if (!$site = get_site()) {
 174         error("Site not found!");
 175     }
 176
 177     //Depending the selected restoreto:
 178     // If user is a teacher (and not creator):
 179     //    0-Current course, deleting: Put $restore->course_id and $restore->deleting (true), create the restore object
 180     //    1-Current course, adding: Put $restore->course_id and $restore->deleting (false), create the restore object
 181     // If the uses is a creator:
 182     //    0-Existing course, deleting: Select the destination course and launch the check again, then
 183     //        put $restore->course_id and $restore->deleting (true), create the restore object.
 184     //    1-Existing course, adding: Select the destination course and launch the check again, then
 185     //        put $restore->course_id and $restore->deleting (false), create the restore object.
 186     //    2-New course: Create the restore object and launch the execute.
 187
 188     //If the user is a teacher and not a creator
 189     if (!has_capability('moodle/course:create', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
 190         $restore->course_id = $id;
 191         if ($restore->restoreto == 0) {
 192             $restore->deleting = true;
 193         } else {
 194             $restore->deleting = false;
 195         }
 196     }
 197
 198     //If the user is a creator (or admin)
 199     if (has_capability('moodle/course:create', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
 200         //Set restore->deleting as needed
 201         if ($restore->restoreto == 0) {
 202             $restore->deleting = true;
 203         } else {
 204             $restore->deleting = false;
 205         }
 206     }
 207
 208     //Now, select the course if needed
 209     if (($restore->restoreto == 0 or $restore->restoreto == 1) and ($restore->course_id == 0) and has_capability('moodle/course:create', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
 210         if ($courses = get_courses("all","c.fullname","c.id,c.fullname,c.shortname,c.visible")) {
 211             print_heading(get_string("choosecourse"));
 212             print_simple_box_start("center");
 213             foreach ($courses as $course) {
 214                 if (!has_capability('moodle/site:restore', get_context_instance(CONTEXT_COURSE, $course->id))) {
 215                     continue;
 216                 }
 217                 if (empty($course->visible)) {
 218                     $optdimmed = ' class="dimmed" ';
 219                 } else {
 220                     $optdimmed = '';
 221                 }
 222                 echo "<a $optdimmed href=\"restore.php?course_id=$course->id&launch=check&id=$id&file=$file\">".s($course->fullname).' ('.s($course->shortname).')</a><br />'."\n";
 223             }
 224             print_simple_box_end();
 225         } else {
 226             print_heading(get_string("nocoursesyet"));
 227             print_continue("$CFG->wwwroot/$CFG->admin/index.php");
 228         }
 229     //Checks everything and execute restore
 230     } else if ((($restore->restoreto == 0 or $restore->restoreto == 1) and ($restore->course_id != 0)) or ($restore->restoreto == 2)) {
 231         //Final access control check
 232         if ($restore->course_id == 0 and !has_capability('moodle/course:create', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
 233             error("You need to be a creator or admin to restore into new course!");
 234         } else if ($restore->course_id != 0 and !has_capability('moodle/site:backup', get_context_instance(CONTEXT_COURSE, $restore->course_id))) {
 235             error("You need to be an edit teacher or admin to restore into selected course!");
 236         }
 237         $show_continue_button = true;
 238         //Check if we've selected any mod's user info and restore->users
 239         //is set to none. Change it to course and inform.
 240         if ($restore->users == 2) {
 241             $changed = false;
 242             $mods = $restore->mods;
 243             foreach ($mods as $mod) {
 244                 if ($mod->userinfo) {
 245                     $changed = true;
 246                 }
 247             }
 248             //If we have selected user files or messages, then users must be restored too
 249             if ($restore->user_files || $restore->messages) {
 250                 $changed = 1;
 251             }
 252             if ($changed) {
 253                 echo get_string ("noteuserschangednonetocourse");
 254                 echo "<hr noshade size=\"1\">";
 255                 $restore->users = 1;
 256             }
 257         }
 258         //Save the restore session object
 259         $SESSION->restore = $restore;
 260         if ($show_continue_button) {
 261             //Print the continue button to execute the restore NOW !!!!
 262             //All is prepared !!!
 263             echo "<center>";
 264             $hidden["launch"]             = "execute";
 265             $hidden["file"]               =  $file;
 266             $hidden["id"]                 =  $id;
 267             print_string('longtimewarning','admin');
 268
 269             if ($restore->users && !empty($info->mnet_externalusers)
 270                 && $info->mnet_externalusers === 'true') {
 271                 if ($info->original_wwwroot === $CFG->wwwroot) {
 272                     print '<p>'.get_string('mnetrestore_extusers','admin').'</p>';
 273                 } else {
 274                     print '<p>'. get_string('mnetrestore_extusers_mismatch','admin').'</p>';
 275                 }
 276             }
 277             print_single_button("restore.php", $hidden, get_string("restorecoursenow"),"post");
 278             echo "</center>";
 279         } else {
 280             //Show error
 281             error ("Something was wrong checking restore preferences");
 282         }
 283
 284     //If we are here. Something must be wrong. Debug !!!
 285     } else {
 286         print_object($restore);
 287         print_object($info);
 288         print_object($course_header);
 289         error ("Something must be wrong");
 290     }
 291
 292 ?>