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/*
* Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.http;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.AbstractHandler;
import org.traccar.helper.Log;
import org.traccar.model.DataManager;
import org.traccar.model.Device;
import org.traccar.model.Position;
/**
* Integrated HTTP server
*/
public class WebServer {
private Server server;
public class WebHandler extends AbstractHandler {
private DataManager dataManager;
public static final int BUFFER_SIZE = 1024;
public WebHandler(DataManager dataManager) {
this.dataManager = dataManager;
}
public void handleIndex(String target,Request baseRequest,HttpServletRequest request,HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html");
InputStream in = this.getClass().getClassLoader().getResourceAsStream("index.html");
OutputStream out = response.getOutputStream();
byte[] buffer = new byte[BUFFER_SIZE];
int count;
while ((count = in.read(buffer)) != -1) {
out.write(buffer, 0, count);
}
out.flush();
}
public void handleIcon(String target,Request baseRequest,HttpServletRequest request,HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("image/x-icon");
InputStream in = this.getClass().getClassLoader().getResourceAsStream("favicon.ico");
OutputStream out = response.getOutputStream();
byte[] buffer = new byte[BUFFER_SIZE];
int count;
while ((count = in.read(buffer)) != -1) {
out.write(buffer, 0, count);
}
out.flush();
}
private Device parseDevice(String json) {
Pattern pattern = Pattern.compile("\\{\"id\":(\\d+),\"imei\":\"(.*)\"\\}");
Matcher parser = pattern.matcher(json);
if (parser.matches()) {
Device device = new Device();
device.setId(Long.valueOf(parser.group(1)));
device.setImei(parser.group(2));
return device;
}
return null;
}
// TODO: separate method into small parts
public void handleData(String target,Request baseRequest,HttpServletRequest request,HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("application/json");
PrintWriter out = response.getWriter();
try {
if (target.equals("/devices.json")) {
String action = request.getParameter("action");
if (action == null) {
Iterator<Device> i = dataManager.getDevices().iterator();
out.print("{'success':true,'results':[");
while (i.hasNext()) {
Device device = i.next();
out.format("{'id':%d,'imei':'%s'}",
device.getId(),
device.getImei());
if (i.hasNext()) out.print(",");
}
} else if (action.equals("create")) {
Device device = parseDevice(request.getReader().readLine());
dataManager.addDevice(device);
out.print("{'success':true,'results':[");
out.format("{'id':%d,'imei':'%s'}",
device.getId(),
device.getImei());
} else if (action.equals("update")) {
Device device = parseDevice(request.getReader().readLine());
dataManager.updateDevice(device);
out.print("{'success':true,'results':[");
out.format("{'id':%d,'imei':'%s'}",
device.getId(),
device.getImei());
} else if (action.equals("destroy")) {
Device device = parseDevice(request.getReader().readLine());
dataManager.removeDevice(device);
out.print("{'success':true,'results':[");
}
} else if (target.equals("/positions.json")) {
out.print("{'success':true,'results':[");
String deviceId = request.getParameter("deviceId");
if (deviceId != null) {
Iterator<Position> i = dataManager.getPositions(Long.valueOf(deviceId)).iterator();
while (i.hasNext()) {
Position position = i.next();
out.format("{'device_id':%d,'time':'%tF %tT','valid':%b,'latitude':%f,'longitude':%f,'speed':%f,'course':%f}",
position.getDeviceId(),
position.getTime(), position.getTime(),
position.getValid(),
position.getLatitude(),
position.getLongitude(),
position.getSpeed(),
position.getCourse());
if (i.hasNext()) out.print(",");
}
}
}
} catch (Exception error) {
out.print("{'success':false,'results':[");
Log.warning(error.getMessage());
}
out.print("]}");
out.flush();
}
public void handleOther(String target,Request baseRequest,HttpServletRequest request,HttpServletResponse response)
throws IOException, ServletException {
response.sendRedirect(response.encodeRedirectURL("/"));
}
public void handle(String target,Request baseRequest,HttpServletRequest request,HttpServletResponse response)
throws IOException, ServletException
{
if (target.equals("/") || target.equals("/index.html")) {
handleIndex(target, baseRequest, request, response);
} else if (target.equals("/favicon.ico")) {
handleIcon(target, baseRequest, request, response);
} else if (target.matches("/.+\\.json")) {
handleData(target, baseRequest, request, response);
} else {
handleOther(target, baseRequest, request, response);
}
}
}
public WebServer(Integer port, DataManager dataManager) {
server = new Server(port);
server.setHandler(new WebHandler(dataManager));
}
public void start() {
try {
server.start();
} catch (Exception error) {
Log.warning(error.getMessage());
}
}
public void stop() {
try {
server.stop();
} catch (Exception error) {
Log.warning(error.getMessage());
}
}
}
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