public function solution_version_switch_download_lock($solution_version_id)
{
$this->_transaction_isolation();
$this->db->trans_begin();
$output = new stdClass();
$output->status = FALSE;
$output->value = FALSE;
$output->message = $this->lang->line('admin_solutions_valuation_version_metadata_download_lock_error_cant_found');
$solution_version = new Solution_version();
$solution_version->include_related('solution');
$solution_version->get_by_id((int) $solution_version_id);
if ($solution_version->exists()) {
$output->value = $solution_version->download_lock == 0 ? FALSE : TRUE;
$solution_version->download_lock = $solution_version->download_lock == 0 ? 1 : 0;
if ($solution_version->save()) {
$output->value = $solution_version->download_lock == 0 ? FALSE : TRUE;
$output->status = TRUE;
if ($output->value) {
$output->message = $this->lang->line('admin_solutions_valuation_version_metadata_download_lock_enabled');
} else {
$output->message = $this->lang->line('admin_solutions_valuation_version_metadata_download_lock_disabled');
}
$this->db->trans_commit();
$this->_action_success();
$this->output->set_internal_value('student_id', (int) $solution_version->solution_student_id);
} else {
$output->message = $this->lang->line('admin_solutions_valuation_version_metadata_download_lock_error_cant_save');
$this->db->trans_rollback();
}
}
$this->output->set_content_type('application/json');
$this->output->set_output(json_encode($output));
}
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');
}
}
