/*
* Copyright 2012 - 2016 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.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.Context;
import org.traccar.DeviceSession;
import org.traccar.helper.Checksum;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.regex.Pattern;
public class MeiligaoProtocolDecoder extends BaseProtocolDecoder {
public MeiligaoProtocolDecoder(MeiligaoProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.number("(dd)(dd)(dd).?d*,") // time (hhmmss)
.expression("([AV]),") // validity
.number("(d+)(dd.d+),") // latitude
.expression("([NS]),")
.number("(d+)(dd.d+),") // longitude
.expression("([EW]),")
.number("(d+.?d*)?,") // speed
.number("(d+.?d*)?,") // course
.number("(dd)(dd)(dd)") // date (ddmmyy)
.expression("[^\\|]*")
.groupBegin()
.number("|(d+.d+)?") // hdop
.number("|(-?d+.?d*)?") // altitude
.number("|(xxxx)?") // state
.groupBegin()
.number("|(xxxx),(xxxx)") // adc
.number("(?:,(xxxx),(xxxx),(xxxx),(xxxx),(xxxx),(xxxx))?")
.groupBegin()
.number("|x{16}") // cell
.number("|(xx)") // gsm
.number("|(x{8})") // odometer
.or()
.number("|(x{9})") // odometer
.groupBegin()
.number("|(x{5,})") // rfid
.groupEnd("?")
.groupEnd("?")
.groupEnd("?")
.groupEnd("?")
.any()
.compile();
private static final Pattern PATTERN_RFID = new PatternBuilder()
.number("|(dd)(dd)(dd),") // time (hhmmss)
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(d+)(dd.d+),") // latitude
.expression("([NS]),")
.number("(d+)(dd.d+),") // longitude
.expression("([EW])")
.compile();
private static final Pattern PATTERN_OBD = new PatternBuilder()
.number("(d+.d+),") // battery
.number("(d+),") // rpm
.number("(d+),") // speed
.number("(d+.d+),") // throttle
.number("(d+.d+),") // engine load
.number("(-?d+),") // coolant temp
.number("(d+.d+),") // instantaneous fuel
.number("(d+.d+),") // average fuel
.number("(d+.d+),") // driving range
.number("(d+.?d*),") // odometer
.number("(d+.d+),") // single fuel consumption
.number("(d+.d+),") // total fuel consumption
.number("(d+),") // error code count
.number("(d+),") // harsh acceleration count
.number("(d+)") // harsh break count
.compile();
private static final Pattern PATTERN_OBDA = new PatternBuilder()
.number("(d+),") // total ignition
.number("(d+.d+),") // total driving time
.number("(d+.d+),") // total idling time
.number("(d+),") // average hot start time
.number("(d+),") // average speed
.number("(d+),") // history highest speed
.number("(d+),") // history highest rpm
.number("(d+),") // total harsh acceleration
.number("(d+)") // total harsh break n0
.compile();
public static final int MSG_HEARTBEAT = 0x0001;
public static final int MSG_SERVER = 0x0002;
public static final int MSG_LOGIN = 0x5000;
public static final int MSG_LOGIN_RESPONSE = 0x4000;
public static final int MSG_POSITION = 0x9955;
public static final int MSG_POSITION_LOGGED = 0x9016;
public static final int MSG_ALARM = 0x9999;
public static final int MSG_RFID = 0x9966;
public static final int MSG_OBD_RT = 0x9901;
public static final int MSG_OBD_RTA = 0x9902;
private DeviceSession identify(ChannelBuffer buf, Channel channel, SocketAddress remoteAddress) {
StringBuilder builder = new StringBuilder();
for (int i = 0; i < 7; i++) {
int b = buf.readUnsignedByte();
// First digit
int d1 = (b & 0xf0) >> 4;
if (d1 == 0xf) {
break;
}
builder.append(d1);
// Second digit
int d2 = b & 0x0f;
if (d2 == 0xf) {
break;
}
builder.append(d2);
}
String id = builder.toString();
if (id.length() == 14) {
return getDeviceSession(channel, remoteAddress, id, id + Checksum.luhn(Long.parseLong(id)));
} else {
return getDeviceSession(channel, remoteAddress, id);
}
}
private static void sendResponse(
Channel channel, SocketAddress remoteAddress, ChannelBuffer id, int type, ChannelBuffer msg) {
if (channel != null) {
ChannelBuffer buf = ChannelBuffers.buffer(
2 + 2 + id.readableBytes() + 2 + msg.readableBytes() + 2 + 2);
buf.writeByte('@');
buf.writeByte('@');
buf.writeShort(buf.capacity());
buf.writeBytes(id);
buf.writeShort(type);
buf.writeBytes(msg);
buf.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, buf.toByteBuffer()));
buf.writeByte('\r');
buf.writeByte('\n');
channel.write(buf, remoteAddress);
}
}
private String getServer(Channel channel) {
String server = Context.getConfig().getString(getProtocolName() + ".server");
if (server == null) {
InetSocketAddress address = (InetSocketAddress) channel.getLocalAddress();
server = address.getAddress().getHostAddress() + ":" + address.getPort();
}
return server;
}
private String decodeAlarm(short value) {
switch (value) {
case 0x01:
return Position.ALARM_SOS;
case 0x10:
return Position.ALARM_LOW_BATTERY;
case 0x11:
return Position.ALARM_OVERSPEED;
case 0x12:
return Position.ALARM_MOVEMENT;
case 0x13:
return Position.ALARM_GEOFENCE_ENTER;
case 0x50:
return Position.ALARM_POWER_OFF;
case 0x53:
return Position.ALARM_GPS_ANTENNA_CUT;
default:
return null;
}
}
private Position decodeRegular(Position position, String sentence) {
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
if (parser.hasNext()) {
position.setSpeed(parser.nextDouble(0));
}
if (parser.hasNext()) {
position.setCourse(parser.nextDouble(0));
}
dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setTime(dateBuilder.getDate());
position.set(Position.KEY_HDOP, parser.next());
if (parser.hasNext()) {
position.setAltitude(parser.nextDouble(0));
}
position.set(Position.KEY_STATUS, parser.next());
for (int i = 1; i <= 8; i++) {
if (parser.hasNext()) {
position.set(Position.PREFIX_ADC + i, parser.nextHexInt(0));
}
}
if (parser.hasNext()) {
position.set(Position.KEY_RSSI, parser.nextHexInt(0));
}
if (parser.hasNext()) {
position.set(Position.KEY_ODOMETER, parser.nextLong(16, 0));
}
if (parser.hasNext()) {
position.set(Position.KEY_ODOMETER, parser.nextLong(16, 0));
}
if (parser.hasNext()) {
position.set(Position.KEY_RFID, parser.nextHexInt(0));
}
return position;
}
private Position decodeRfid(Position position, String sentence) {
Parser parser = new Parser(PATTERN_RFID, sentence);
if (!parser.matches()) {
return null;
}
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.HMS_DMY));
position.setValid(true);
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
return position;
}
private Position decodeObd(Position position, String sentence) {
Parser parser = new Parser(PATTERN_OBD, sentence);
if (!parser.matches()) {
return null;
}
getLastLocation(position, null);
position.set(Position.KEY_BATTERY, parser.nextDouble(0));
position.set(Position.KEY_RPM, parser.nextInt(0));
position.set(Position.KEY_OBD_SPEED, parser.nextInt(0));
position.set(Position.KEY_THROTTLE, parser.nextDouble(0));
position.set("engineLoad", parser.nextDouble(0));
position.set(Position.PREFIX_TEMP + 1, parser.nextInt(0));
position.set(Position.KEY_FUEL_CONSUMPTION, parser.nextDouble(0));
position.set("averageFuelConsumption", parser.nextDouble(0));
position.set("drivingRange", parser.nextDouble(0));
position.set(Position.KEY_ODOMETER, parser.nextDouble(0));
position.set("singleFuelConsumption", parser.nextDouble(0));
position.set("totalFuelConsumption", parser.nextDouble(0));
position.set(Position.KEY_DTCS, parser.nextInt(0));
position.set("harshAcelerationNo", parser.nextInt(0));
position.set("harshBreakerNo", parser.nextInt(0));
return position;
}
private Position decodeObdA(Position position, String sentence) {
Parser parser = new Parser(PATTERN_OBDA, sentence);
if (!parser.matches()) {
return null;
}
getLastLocation(position, null);
position.set("totalIgnitionNo", parser.nextInt(0));
position.set("totalDrivingTime", parser.nextDouble(0));
position.set("totalIdlingTime", parser.nextDouble(0));
position.set("averageHotStartTime", parser.nextInt(0));
position.set("averageSpeed", parser.nextInt(0));
position.set("historyHighestSpeed", parser.nextInt(0));
position.set("historyHighestRpm", parser.nextInt(0));
position.set("totalHarshAccerleration", parser.nextInt(0));
position.set("totalHarshBrake", parser.nextInt(0));
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(2); // header
buf.readShort(); // length
ChannelBuffer id = buf.readBytes(7);
int command = buf.readUnsignedShort();
ChannelBuffer response;
if (channel != null) {
if (command == MSG_LOGIN) {
response = ChannelBuffers.wrappedBuffer(new byte[]{0x01});
sendResponse(channel, remoteAddress, id, MSG_LOGIN_RESPONSE, response);
return null;
} else if (command == MSG_HEARTBEAT) {
response = ChannelBuffers.wrappedBuffer(new byte[]{0x01});
sendResponse(channel, remoteAddress, id, MSG_HEARTBEAT, response);
return null;
} else if (command == MSG_SERVER) {
response = ChannelBuffers.copiedBuffer(getServer(channel), StandardCharsets.US_ASCII);
sendResponse(channel, remoteAddress, id, MSG_SERVER, response);
return null;
}
}
Position position = new Position();
position.setProtocol(getProtocolName());
if (command == MSG_ALARM) {
position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
} else if (command == MSG_POSITION_LOGGED) {
buf.skipBytes(6);
}
DeviceSession deviceSession = identify(id, channel, remoteAddress);
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
if (command == MSG_RFID) {
for (int i = 0; i < 15; i++) {
long rfid = buf.readUnsignedInt();
if (rfid != 0) {
String card = String.format("%010d", rfid);
position.set("card" + (i + 1), card);
position.set(Position.KEY_RFID, card);
}
}
}
String sentence = buf.toString(buf.readerIndex(), buf.readableBytes() - 4, StandardCharsets.US_ASCII);
if (command == MSG_POSITION || command == MSG_POSITION_LOGGED || command == MSG_ALARM) {
return decodeRegular(position, sentence);
} else if (command == MSG_RFID) {
return decodeRfid(position, sentence);
} else if (command == MSG_OBD_RT) {
return decodeObd(position, sentence);
} else if (command == MSG_OBD_RTA) {
return decodeObdA(position, sentence);
}
return null;
}
}