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 {
$this->parser->parse('frontend/tasks/download_solution.tpl');
}
}
public function solution_version_switch_download_lock($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 upload_solution($task_set_id_url, $task_id_url)
{
$task_set_id = url_get_id($task_set_id_url);
$task_id = url_get_id($task_id_url);
$this->_transaction_isolation();
$this->db->trans_begin();
$date = date('Y-m-d H:i:s');
$student = new Student();
$student->get_by_id($this->usermanager->get_student_id());
$course = new Course();
$course->where_related('active_for_student', 'id', $student->id);
$course->where_related('participant', 'student_id', $student->id);
$course->where_related('participant', 'allowed', 1);
$course->include_related('period', 'name');
$course->get();
$task_set = new Task_set();
$task_set->where_related($course);
$task_set->where('published', 1);
$task_set->group_start();
$task_set->where('publish_start_time <=', $date);
$task_set->or_where('publish_start_time', NULL);
$task_set->group_end();
$task_set->get_by_id($task_set_id);
$task = $task_set->task->include_join_fields()->get_by_id($task_id);
$project_selection = new Project_selection();
$project_selection->where_related($student);
$project_selection->where_related($task_set);
$project_selection->where_related($task);
$project_selection->get();
if ($student->exists() && $course->exists() && $task_set->exists() && $task->exists() && $project_selection->exists()) {
if ($date <= $task_set->upload_end_time) {
$config['upload_path'] = 'private/uploads/solutions/task_set_' . intval($task_set_id) . '/';
$config['allowed_types'] = 'zip';
$config['max_size'] = intval($this->config->item('maximum_solition_filesize'));
$current_version = $task_set->get_student_file_next_version($student->id);
$config['file_name'] = $student->id . '_' . $this->normalize_student_name($student) . '_' . substr(md5(time() . rand(-500000, 500000)), 0, 4) . '_' . $current_version . '.zip';
@mkdir($config['upload_path'], DIR_READ_MODE);
$this->load->library('upload', $config);
if ($this->upload->do_upload('file')) {
$solution = new Solution();
$solution->where('task_set_id', $task_set->id);
$solution->where('student_id', $student->id);
$solution->get();
$revalidate = 1;
if ($solution->exists()) {
$solution->ip_address = $_SERVER["REMOTE_ADDR"];
$solution->revalidate = $revalidate;
$solution->save();
} else {
$solution = new Solution();
$solution->ip_address = $_SERVER["REMOTE_ADDR"];
$solution->revalidate = $revalidate;
$solution->save(array('student' => $student, 'task_set' => $task_set));
}
$solution_version = new Solution_version();
$solution_version->ip_address = $_SERVER["REMOTE_ADDR"];
$solution_version->version = $current_version;
$solution_version->save($solution);
if ($this->db->trans_status()) {
$log = new Log();
$log->add_student_solution_upload_log(sprintf($this->lang->line('projects_task_solution_upload_log_message'), $config['file_name']), $student, $solution->id);
$this->db->trans_commit();
$this->messages->add_message('lang:projects_task_solution_uploaded', Messages::MESSAGE_TYPE_SUCCESS);
$this->_action_success();
$this->output->set_internal_value('task_set_id', $solution->task_set_id);
$this->output->set_internal_value('task_id', $task->id);
} else {
$this->db->trans_rollback();
@unlink($config['upload_path'] . $config['file_name']);
$this->messages->add_message('lang:projects_task_solution_canceled_due_db_error', Messages::MESSAGE_TYPE_ERROR);
}
redirect(create_internal_url('projects/task/' . $task_set_id_url . '/' . $task_id_url));
} else {
$this->db->trans_rollback();
$this->parser->assign('file_error_message', $this->upload->display_errors('', ''));
$this->task($task_set_id_url, $task_id_url);
}
} else {
$this->db->trans_rollback();
$this->messages->add_message('lang:projects_task_solution_upload_time_error', Messages::MESSAGE_TYPE_ERROR);
redirect(create_internal_url('projects/task/' . $task_set_id_url . '/' . $task_id_url));
}
} else {
$this->db->trans_rollback();
$this->messages->add_message('lang:projects_task_solution_database_data_wrong_error', Messages::MESSAGE_TYPE_ERROR);
redirect(create_internal_url('projects/task/' . $task_set_id_url . '/' . $task_id_url));
}
}
