/*
* Copyright 2013 - 2017 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.protocol;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.Checksum;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.DateUtil;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.Date;
import java.util.regex.Pattern;
public class TaipProtocolDecoder extends BaseProtocolDecoder {
public TaipProtocolDecoder(TaipProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.groupBegin()
.expression("R[EP]V") // type
.groupBegin()
.number("(dd)") // event
.number("(dddd)") // week
.number("(d)") // day
.groupEnd("?")
.number("(d{5})") // seconds
.or()
.expression("(?:RGP|RCQ|RBR)") // type
.number("(dd)?") // event
.number("(dd)(dd)(dd)") // date (mmddyy)
.number("(dd)(dd)(dd)") // time (hhmmss)
.groupEnd()
.groupBegin()
.number("([-+]dd)(d{5})") // latitude
.number("([-+]ddd)(d{5})") // longitude
.or()
.number("([-+])(dd)(dd.dddd)") // latitude
.number("([-+])(ddd)(dd.dddd)") // longitude
.groupEnd()
.number("(ddd)") // speed
.number("(ddd)") // course
.groupBegin()
.number("(xx)") // input
.number("(xx)") // satellites
.number("(ddd)") // battery
.number("(x{8})") // odometer
.number("[01]") // gps power
.groupEnd("?")
.number("(d)") // fix mode
.any()
.compile();
private Date getTime(long week, long day, long seconds) {
DateBuilder dateBuilder = new DateBuilder()
.setDate(1980, 1, 6)
.addMillis(((week * 7 + day) * 24 * 60 * 60 + seconds) * 1000);
return dateBuilder.getDate();
}
private Date getTime(long seconds) {
DateBuilder dateBuilder = new DateBuilder(new Date())
.setTime(0, 0, 0, 0)
.addMillis(seconds * 1000);
return DateUtil.correctDay(dateBuilder.getDate());
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
int beginIndex = sentence.indexOf('>');
if (beginIndex != -1) {
sentence = sentence.substring(beginIndex + 1);
}
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
if (parser.hasNext(3)) {
position.set(Position.KEY_EVENT, parser.nextInt(0));
position.setTime(getTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)));
} else if (parser.hasNext()) {
position.setTime(getTime(parser.nextInt(0)));
}
if (parser.hasNext()) {
position.set(Position.KEY_EVENT, parser.nextInt(0));
}
if (parser.hasNext(6)) {
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
}
if (parser.hasNext(4)) {
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_DEG));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_DEG));
}
if (parser.hasNext(6)) {
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
}
position.setSpeed(UnitsConverter.knotsFromMph(parser.nextDouble(0)));
position.setCourse(parser.nextDouble(0));
if (parser.hasNext(4)) {
position.set(Position.KEY_INPUT, parser.nextHexInt(0));
position.set(Position.KEY_SATELLITES, parser.nextHexInt(0));
position.set(Position.KEY_BATTERY, parser.nextInt(0));
position.set(Position.KEY_ODOMETER, parser.nextLong(16, 0));
}
position.setValid(parser.nextInt(0) != 0);
String[] attributes = null;
beginIndex = sentence.indexOf(';');
if (beginIndex != -1) {
int endIndex = sentence.indexOf('<', beginIndex);
if (endIndex == -1) {
endIndex = sentence.length();
}
attributes = sentence.substring(beginIndex, endIndex).split(";");
}
String uniqueId = null;
DeviceSession deviceSession = null;
String messageIndex = null;
if (attributes != null) {
for (String attribute : attributes) {
int index = attribute.indexOf('=');
if (index != -1) {
String key = attribute.substring(0, index).toLowerCase();
String value = attribute.substring(index + 1);
switch (key) {
case "id":
uniqueId = value;
deviceSession = getDeviceSession(channel, remoteAddress, value);
if (deviceSession != null) {
position.setDeviceId(deviceSession.getDeviceId());
}
break;
case "sv":
position.set(Position.KEY_SATELLITES, value);
break;
case "bl":
position.set(Position.KEY_BATTERY, Integer.parseInt(value));
break;
case "vo":
position.set(Position.KEY_ODOMETER, Long.parseLong(value));
break;
default:
position.set(key, value);
break;
}
} else if (attribute.startsWith("#")) {
messageIndex = attribute;
}
}
}
if (deviceSession != null) {
if (channel != null) {
if (messageIndex != null) {
String response = ">ACK;" + messageIndex + ";ID=" + uniqueId + ";*";
response += String.format("%02X", Checksum.xor(response)) + "<";
channel.write(response, remoteAddress);
} else {
channel.write(uniqueId, remoteAddress);
}
}
return position;
}
return null;
}
}