# FileHelper.java

    /*
     * Copyright (C) 2000 - 2026 Silverpeas
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception.  You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "http://www.silverpeas.org/legal/licensing"
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program.  If not, see <https://www.gnu.org/licenses/>.
     */

    /*
     * Copyright (C) 2000 - 2026 Silverpeas
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception. You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "https://www.silverpeas.org/legal/floss_exception.html"
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     * GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program. If not, see <https://www.gnu.org/licenses/>.
     */

    /*
     * To change this template, choose Tools | Templates
     * and open the template in the editor.
     */
    package org.silverpeas.components.survey.control;

    import org.silverpeas.core.util.file.FileUploadUtil;
    import org.apache.commons.fileupload.FileItem;

    /**
     * @author ehugonnet
     */
    public class FileHelper {

      private FileHelper() {

      }

      public static boolean isCorrectFile(FileItem filePart) {
        String fileName = FileUploadUtil.getFileName(filePart);
        boolean correctFile = false;
        if (fileName != null) {
          String logicalName = fileName.trim();
          if ((logicalName.length() >= 3) && (logicalName.indexOf('*') == -1) &&
              (logicalName.indexOf('.') != -1)) {
            String type = logicalName.substring(logicalName.indexOf('.') + 1, logicalName.length());
            if (type.length() >= 3) {
              correctFile = true;
            }
          }
        }
        return correctFile;
      }
    }