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/*
* Copyright 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 com.google.inject.Provider;
import org.traccar.api.security.PermissionsService;
import org.traccar.model.Server;
import org.traccar.storage.StorageException;
import jakarta.inject.Inject;
import jakarta.inject.Singleton;
import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
@Singleton
public class OverrideFilter implements Filter {
private final Provider<PermissionsService> permissionsServiceProvider;
@Inject
public OverrideFilter(Provider<PermissionsService> permissionsServiceProvider) {
this.permissionsServiceProvider = permissionsServiceProvider;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
if (((HttpServletRequest) request).getServletPath().startsWith("/api")) {
chain.doFilter(request, response);
return;
}
ResponseWrapper wrappedResponse = new ResponseWrapper((HttpServletResponse) response);
chain.doFilter(request, wrappedResponse);
byte[] bytes = wrappedResponse.getCapture();
if (bytes != null) {
if (wrappedResponse.getContentType() != null && wrappedResponse.getContentType().contains("text/html")
|| ((HttpServletRequest) request).getPathInfo().endsWith("manifest.webmanifest")) {
Server server;
try {
server = permissionsServiceProvider.get().getServer();
} catch (StorageException e) {
throw new RuntimeException(e);
}
String title = server.getString("title", "Traccar");
String description = server.getString("description", "Traccar GPS Tracking System");
String colorPrimary = server.getString("colorPrimary", "#1a237e");
String alteredContent = new String(wrappedResponse.getCapture())
.replace("${title}", title)
.replace("${description}", description)
.replace("${colorPrimary}", colorPrimary);
byte[] data = alteredContent.getBytes();
response.setContentLength(data.length);
response.getOutputStream().write(data);
} else {
response.getOutputStream().write(bytes);
}
}
}
}
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