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/*
* Copyright 2018 Anton Tananaev (anton@traccar.org)
* Copyright 2018 Andrey Kunitsyn (andrey@traccar.org)
*
* 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 org.traccar.api;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.ws.rs.NotAuthorizedException;
import org.traccar.Context;
import org.traccar.api.resource.SessionResource;
import org.traccar.helper.Log;
import org.traccar.model.Device;
public class MediaFilter implements Filter {
private boolean dirAllowed;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
dirAllowed = Context.getConfig().getBoolean("media.dirAllowed");
}
private static void formatError(HttpServletResponse response, Exception e) throws IOException {
if (e instanceof SecurityException) {
response.setStatus(HttpServletResponse.SC_FORBIDDEN);
} else if (e instanceof IllegalArgumentException) {
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
} else if (e instanceof NotAuthorizedException) {
response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
} else {
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
}
response.getWriter().println(Log.exceptionStack(e));
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
try {
HttpSession session = ((HttpServletRequest) request).getSession(false);
Long userId = null;
if (session != null) {
userId = (Long) session.getAttribute(SessionResource.USER_ID_KEY);
if (userId != null) {
Context.getPermissionsManager().checkUserEnabled(userId);
Context.getStatisticsManager().registerRequest(userId);
}
}
if (userId == null) {
throw new NotAuthorizedException("Not authorized");
}
String[] parts = ((HttpServletRequest) request).getPathInfo().split("/");
if (parts.length < 2) {
if (dirAllowed) {
Context.getPermissionsManager().checkAdmin(userId);
} else {
throw new SecurityException("Wrong path");
}
} else if (parts.length == 2 && !dirAllowed) {
throw new SecurityException("Wrong path");
} else {
Device device = Context.getIdentityManager().getByUniqueId(parts[1]);
if (device != null) {
Context.getPermissionsManager().checkDevice(userId, device.getId());
} else {
throw new IllegalArgumentException("Device not found");
}
}
chain.doFilter(request, response);
} catch (Exception e) {
formatError((HttpServletResponse) response, e);
}
}
@Override
public void destroy() {
}
}
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