public function get_solution_version_metadata($task_set_id, $solution_id, $solution_file)
{
$task_set = new Task_set();
$task_set->where_related('solution', 'id', $solution_id);
$task_set->include_related('solution/student', 'id');
$task_set->get_by_id($task_set_id);
if ($task_set->exists()) {
$file_name = decode_from_url($solution_file);
$file_info = $task_set->get_specific_file_info($file_name);
$this->parser->assign('file_last_modified', $file_info['last_modified']);
$solution_version = new Solution_version();
$solution_version->where('version', $file_info['version']);
$solution_version->where_related('solution', 'id', $solution_id);
$solution_version->get();
if (!$solution_version->exists()) {
$solution_version = new Solution_version();
$solution_version->version = (int) $file_info['version'];
$solution_version->solution_id = (int) $solution_id;
$solution_version->save();
}
//$solution_version->check_last_query();
$this->parser->assign('solution_version', $solution_version);
$this->parser->assign('task_set', $task_set);
}
$this->parser->parse('backend/solutions/version_metadata.tpl');
}
public function download_solution($task_set_id, $file)
{
if ($this->usermanager->is_student_session_valid() && !Restriction::check_restriction_for_ip_address() || $this->usermanager->is_teacher_session_valid()) {
$task_set = new Task_set();
$task_set->get_by_id(intval($task_set_id));
if ($task_set->exists()) {
$filename = decode_from_url($file);
$file_info = $task_set->get_specific_file_info($filename);
if ($file_info !== FALSE) {
$allow_download = TRUE;
if (!$this->usermanager->is_teacher_session_valid()) {
$solution_version = new Solution_version();
$solution_version->where('version', $file_info['version']);
$solution_version->where_related('solution/task_set', 'id', $task_set_id);
$solution_version->get();
if ($solution_version->exists()) {
if ((bool) $solution_version->download_lock) {
$allow_download = FALSE;
}
}
}
if ($allow_download) {
$log = new Log();
if (!$this->usermanager->is_teacher_session_valid()) {
$log->add_student_solution_download_log($this->lang->line('tasks_log_message_student_solution_download'), $this->usermanager->get_student_id(), $filename, $task_set->id);
}
$filename = $file_info['file_name'] . '_' . $file_info['version'] . '.zip';
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime_type = finfo_file($finfo, $file_info['filepath']);
finfo_close($finfo);
header('Content-Description: File Transfer');
header('Content-Type: ' . $mime_type);
header('Content-Disposition: attachment; filename=' . $filename);
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file_info['filepath']));
ob_clean();
flush();
$f = fopen($file_info['filepath'], 'r');
while (!feof($f)) {
echo fread($f, 1024);
}
fclose($f);
exit;
} else {
$this->parser->parse('frontend/tasks/download_solution.tpl', array('version_download_disabled' => TRUE));
}
} else {
$this->output->set_status_header(404, 'Not found');
}
} else {
$this->output->set_status_header(404, 'Not found');
}
} else {
$this->parser->parse('frontend/tasks/download_solution.tpl');
}
}
