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/*
* Copyright 2022 - 2023 Anton Tananaev (anton@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.web;
import org.eclipse.jetty.servlets.DoSFilter;
import org.traccar.config.Config;
import org.traccar.config.Keys;
import jakarta.inject.Inject;
import jakarta.inject.Singleton;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpSession;
@Singleton
public class ThrottlingFilter extends DoSFilter {
@Inject
private Config config;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
super.init(filterConfig);
if (config.hasKey(Keys.WEB_MAX_REQUESTS_PER_SECOND)) {
setMaxRequestsPerSec(config.getInteger(Keys.WEB_MAX_REQUESTS_PER_SECOND));
}
setMaxRequestMs(config.getInteger(Keys.WEB_MAX_REQUEST_SECONDS) * 1000L);
}
@Override
protected String extractUserId(ServletRequest request) {
HttpSession session = ((HttpServletRequest) request).getSession(false);
if (session != null) {
var userId = session.getAttribute("userId");
return userId != null ? userId.toString() : null;
}
return null;
}
}
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