com.thinkberg.moxo.dav.PutHandler.java Source code

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Here is the source code for com.thinkberg.moxo.dav.PutHandler.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.moxo.dav;

import com.thinkberg.moxo.dav.lock.LockException;
import com.thinkberg.moxo.dav.lock.LockManager;
import org.apache.commons.vfs.FileObject;
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 PutHandler extends WebdavHandler {
    public void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
        FileObject object = getResourceManager().getFileObject(request.getPathInfo());

        try {
            LockManager.getInstance().checkCondition(object, getIf(request));
        } catch (LockException e) {
            if (e.getLocks() != null) {
                response.sendError(SC_LOCKED);
            } else {
                response.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
            }
            return;
        }

        // it is forbidden to write data on a folder
        if (object.exists() && FileType.FOLDER.equals(object.getType())) {
            response.sendError(HttpServletResponse.SC_FORBIDDEN);
            return;
        }

        FileObject parent = object.getParent();
        if (!parent.exists()) {
            response.sendError(HttpServletResponse.SC_FORBIDDEN);
            return;
        }

        if (!FileType.FOLDER.equals(parent.getType())) {
            response.sendError(HttpServletResponse.SC_CONFLICT);
            return;
        }

        InputStream is = request.getInputStream();
        OutputStream os = object.getContent().getOutputStream();
        log("PUT sends " + request.getHeader("Content-length") + " bytes");
        log("PUT copied " + Util.copyStream(is, os) + " bytes");
        os.flush();
        object.close();

        response.setStatus(HttpServletResponse.SC_CREATED);
    }
}