moodle/backup/restore_precheck.html

<?PHP  // $Id$
    //This page copies th zip to the temp directory,
    //unzip it, check that it is a valid backup file
    //inform about its contents and fill all the necesary
    //variables to continue with the restore.

    //Checks we have the file variable
    if (!isset($file)) {         
        error ("File not specified");
    }

    //Prepend dataroot to variable to have the absolute path
    $file = $CFG->dataroot."/".$file;

    //Start the main table
    echo "<table cellpadding=5>";
    echo "<tr><td>";
    
    //Start the mail ul
    echo "<ul>";

    //Check the file exists 
    if (!is_file($file)) {
        error ("File not exists ($file)");
    }

    //Check the file name ends with .zip
    if (!substr($file,-4) == ".zip") {
        error ("File has an incorrect extension");
    }

    //Now calculate the unique_code for this restore
    $backup_unique_code = time();
    
    //Now check and create the backup dir (if it doesn't exist)
    $status = check_and_create_backup_dir($backup_unique_code);
    //Empty dir
    if ($status) {
        echo "<li>Creating temp dir";
        $status = clear_backup_dir($backup_unique_code);
    }

    //Now delete old data and directories under dataroot/temp/backup
    if ($status) {   
        echo "<li>Cleaning old data";
        $status = backup_delete_old_data();
    }
  
    //Now copy he zip file to dataroot/temp/backup/backup_unique_code
    if ($status) {
        $status = backup_copy_file($file,$CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file));
    }

    //Now unzip the file
    if ($status) {
        echo "<li>Retrieving backup file";
        $status = restore_unzip ($CFG->dataroot."/temp/backup/".$backup_unique_code."/".basename($file),$moodle_home);
    }

    //Now check for the moodle.xml file
    if ($status) {
        echo "<li>Checking backup file";
        $status = restore_check_moodle_file ($CFG->dataroot."/temp/backup/".$backup_unique_code."/moodle.xml");
    }

    //End the main ul
    echo "</ul>";

    //End the main table
    echo "</tr></td>";
    echo "</table>";

    if (!$status) {
        error ("An error has ocurred");
    }
?>