com.thinkberg.webdav.GetHandler.java Source code

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Here is the source code for com.thinkberg.webdav.GetHandler.java

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/*
 * Copyright 2007 Matthias L. Jugel.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.thinkberg.webdav;

import com.thinkberg.webdav.vfs.VFSBackend;
import org.apache.commons.vfs.FileContent;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.FileType;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * @author Matthias L. Jugel
 * @version $Id$
 */
public class GetHandler extends WebdavHandler {

    public void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
        FileObject object = VFSBackend.resolveFile(request.getPathInfo());

        if (object.exists()) {
            if (FileType.FOLDER.equals(object.getType())) {
                response.sendError(HttpServletResponse.SC_FORBIDDEN);
                return;
            }

            setHeader(response, object.getContent());

            InputStream is = object.getContent().getInputStream();
            OutputStream os = response.getOutputStream();
            Util.copyStream(is, os);
            is.close();
        } else {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
        }
    }

    void setHeader(HttpServletResponse response, FileContent content) throws FileSystemException {
        response.setHeader("Last-Modified", Util.getDateString(content.getLastModifiedTime()));
        response.setHeader("Content-Type", content.getContentInfo().getContentType());
        response.setHeader("ETag", Util.getETag(content.getFile()));
    }

}