com.silverpeas.sharing.servlets.GetLinkFileServlet.java Source code

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Here is the source code for com.silverpeas.sharing.servlets.GetLinkFileServlet.java

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/**
 * Copyright (C) 2000 - 2013 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/docs/core/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 <http://www.gnu.org/licenses/>.
 */
package com.silverpeas.sharing.servlets;

import com.silverpeas.sharing.model.DownloadDetail;
import com.silverpeas.sharing.model.SimpleFileTicket;
import com.silverpeas.sharing.model.Ticket;
import com.silverpeas.sharing.model.VersionFileTicket;
import com.silverpeas.sharing.services.SharingServiceFactory;
import com.silverpeas.util.web.servlet.RestRequest;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.silverpeas.attachment.AttachmentServiceFactory;
import org.silverpeas.attachment.model.HistorisedDocument;
import org.silverpeas.attachment.model.SimpleDocument;
import org.silverpeas.attachment.model.SimpleDocumentPK;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Date;

import static com.silverpeas.sharing.servlets.FileSharingConstants.PARAM_KEYFILE;

public class GetLinkFileServlet extends HttpServlet {

    private static final long serialVersionUID = -3386956747183311695L;

    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        RestRequest rest = new RestRequest(request, "myFile");
        String keyFile = rest.getElementValue(PARAM_KEYFILE);
        Ticket ticket = SharingServiceFactory.getSharingTicketService().getTicket(keyFile);
        if (ticket != null && ticket.isValid()) {
            // recherche des infos sur le fichier...
            String filePath = null;
            String fileType = null;
            String fileName = null;
            long fileSize = 0;
            if (ticket instanceof SimpleFileTicket) {
                SimpleDocumentPK pk = new SimpleDocumentPK(null, ticket.getComponentId());
                pk.setOldSilverpeasId(ticket.getSharedObjectId());
                SimpleDocument document = AttachmentServiceFactory.getAttachmentService().searchDocumentById(pk,
                        null);
                filePath = document.getAttachmentPath();
                fileType = document.getContentType();
                fileName = document.getFilename();
                fileSize = document.getSize();
            } else if (ticket instanceof VersionFileTicket) {
                SimpleDocumentPK pk = new SimpleDocumentPK(null, ticket.getComponentId());
                pk.setOldSilverpeasId(ticket.getSharedObjectId());
                HistorisedDocument versionedDocument = (HistorisedDocument) AttachmentServiceFactory
                        .getAttachmentService().searchDocumentById(pk, null);
                SimpleDocument document = versionedDocument.getLastPublicVersion();
                filePath = document.getAttachmentPath();
                fileType = document.getContentType();
                fileName = document.getFilename();
                fileSize = document.getSize();
            }
            File realFile = new File(filePath);
            BufferedInputStream input = null;
            OutputStream out = response.getOutputStream();
            try {
                response.setContentType(fileType);
                response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");
                response.setHeader("Content-Length", String.valueOf(fileSize));
                input = new BufferedInputStream(FileUtils.openInputStream(realFile));
                IOUtils.copy(input, out);
                DownloadDetail download = new DownloadDetail(ticket, new Date(), request.getRemoteAddr());
                SharingServiceFactory.getSharingTicketService().addDownload(download);
                return;
            } catch (Exception ignored) {
            } finally {
                if (input != null) {
                    IOUtils.closeQuietly(input);
                }
                IOUtils.closeQuietly(out);
            }
        }
        getServletContext().getRequestDispatcher("/sharing/jsp/invalidTicket.jsp").forward(request, response);
    }
}