@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
HttpRequest request = (HttpRequest) msg;
QueryStringDecoder decoder = new QueryStringDecoder(request.getUri());
DeviceSession deviceSession =
getDeviceSession(channel, remoteAddress, decoder.getParameters().get("UserName").get(0));
if (deviceSession == null) {
return null;
}
Parser parser = new Parser(PATTERN, decoder.getParameters().get("LOC").get(0));
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
DateBuilder dateBuilder =
new DateBuilder()
.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt())
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.setValid(true);
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setAltitude(parser.nextDouble());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
if (channel != null) {
HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
channel.write(response).addListener(ChannelFutureListener.CLOSE);
}
return position;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(2); // header
ChannelBuffer id = buf.readBytes(12);
buf.readUnsignedByte(); // separator
int type = buf.readUnsignedByte();
buf.readUnsignedShort(); // length
if (type == MSG_LOGIN) {
int command = buf.readUnsignedByte(); // 0x00 - heartbeat
if (command == 0x01) {
String imei = buf.toString(buf.readerIndex(), 15, StandardCharsets.US_ASCII);
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
if (deviceSession != null && channel != null) {
ChannelBuffer response = ChannelBuffers.dynamicBuffer();
response.writeByte(0x48);
response.writeByte(0x52); // header
response.writeBytes(id);
response.writeByte(0x2c); // separator
response.writeByte(type);
response.writeShort(0x0002); // length
response.writeShort(0x8000);
response.writeShort(0x0000); // checksum
channel.write(response);
}
}
} else if (type == MSG_GPS) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setTime(new Date(buf.readUnsignedInt() * 1000));
int flags = buf.readUnsignedByte();
position.setValid(true);
position.setLatitude(convertCoordinate(buf.readUnsignedInt(), !BitUtil.check(flags, 0)));
position.setLongitude(convertCoordinate(buf.readUnsignedInt(), !BitUtil.check(flags, 1)));
position.setSpeed(buf.readUnsignedByte());
position.setCourse(buf.readUnsignedByte());
position.set(Position.KEY_LAC, buf.readUnsignedShort());
position.set(Position.KEY_CID, buf.readUnsignedShort());
return position;
}
return null;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.readUnsignedByte(); // header
int length = (buf.readUnsignedShort() & 0x7fff) + 3;
List<Position> positions = new LinkedList<>();
Set<Integer> tags = new HashSet<>();
boolean hasLocation = false;
Position position = new Position();
position.setProtocol(getProtocolName());
while (buf.readerIndex() < length) {
// Check if new message started
int tag = buf.readUnsignedByte();
if (tags.contains(tag)) {
if (hasLocation && position.getFixTime() != null) {
positions.add(position);
}
tags.clear();
hasLocation = false;
position = new Position();
}
tags.add(tag);
switch (tag) {
case TAG_IMEI:
getDeviceSession(
channel, remoteAddress, buf.readBytes(15).toString(StandardCharsets.US_ASCII));
break;
case TAG_DATE:
position.setTime(new Date(buf.readUnsignedInt() * 1000));
break;
case TAG_COORDINATES:
hasLocation = true;
position.setValid((buf.readUnsignedByte() & 0xf0) == 0x00);
position.setLatitude(buf.readInt() / 1000000.0);
position.setLongitude(buf.readInt() / 1000000.0);
break;
case TAG_SPEED_COURSE:
position.setSpeed(buf.readUnsignedShort() * 0.0539957);
position.setCourse(buf.readUnsignedShort() * 0.1);
break;
case TAG_ALTITUDE:
position.setAltitude(buf.readShort());
break;
case TAG_STATUS:
int status = buf.readUnsignedShort();
position.set(Position.KEY_IGNITION, BitUtil.check(status, 9));
position.set(Position.KEY_ALARM, BitUtil.check(status, 15));
position.set(Position.KEY_POWER, BitUtil.check(status, 2));
break;
case TAG_DIGITAL_INPUTS:
int input = buf.readUnsignedShort();
for (int i = 0; i < 16; i++) {
position.set(Position.PREFIX_IO + (i + 1), BitUtil.check(input, i));
}
break;
case TAG_DIGITAL_OUTPUTS:
int output = buf.readUnsignedShort();
for (int i = 0; i < 16; i++) {
position.set(Position.PREFIX_IO + (i + 17), BitUtil.check(output, i));
}
break;
case TAG_INPUT_VOLTAGE1:
position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort() / 1000.0);
break;
case TAG_INPUT_VOLTAGE2:
position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort() / 1000.0);
break;
case TAG_INPUT_VOLTAGE3:
position.set(Position.PREFIX_ADC + 3, buf.readUnsignedShort() / 1000.0);
break;
case TAG_INPUT_VOLTAGE4:
position.set(Position.PREFIX_ADC + 4, buf.readUnsignedShort() / 1000.0);
break;
case TAG_XT1:
case TAG_XT2:
case TAG_XT3:
buf.skipBytes(16);
break;
default:
break;
}
}
if (hasLocation && position.getFixTime() != null) {
positions.add(position);
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
sendReply(channel, buf.readUnsignedShort());
for (Position p : positions) {
p.setDeviceId(deviceSession.getDeviceId());
}
if (positions.isEmpty()) {
return null;
}
return positions;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.readUnsignedShort(); // device id
buf.readUnsignedByte(); // length
int type = buf.readUnsignedByte();
DeviceSession deviceSession;
if (type == MSG_IMEI) {
deviceSession =
getDeviceSession(
channel, remoteAddress, buf.readBytes(15).toString(StandardCharsets.US_ASCII));
} else {
deviceSession = getDeviceSession(channel, remoteAddress);
}
if (deviceSession == null) {
return null;
}
if (BitUtil.to(type, 2) == 0) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
buf.readUnsignedByte(); // firmware version
buf.readUnsignedShort(); // index
position.set(Position.KEY_STATUS, buf.readUnsignedShort());
position.setValid(true);
position.setLatitude(buf.readFloat());
position.setLongitude(buf.readFloat());
position.setCourse(buf.readUnsignedShort() * 0.1);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort() * 0.1));
buf.readUnsignedByte(); // acceleration
position.setAltitude(buf.readUnsignedShort());
position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1);
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte() & 0x0f);
position.setTime(new Date(buf.readUnsignedInt() * 1000));
position.set(Position.KEY_POWER, buf.readUnsignedShort());
position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
if (BitUtil.check(type, 2)) {
buf.skipBytes(4);
}
if (BitUtil.check(type, 3)) {
buf.skipBytes(12);
}
if (BitUtil.check(type, 4)) {
buf.skipBytes(8);
}
if (BitUtil.check(type, 5)) {
buf.skipBytes(9);
}
if (BitUtil.check(type, 6)) {
buf.skipBytes(buf.getUnsignedByte(buf.readerIndex()));
}
if (BitUtil.check(type, 7)) {
position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
}
return position;
}
return null;
}