aboutsummaryrefslogtreecommitdiff
path: root/src/main/java/org/traccar/protocol/T800xProtocolDecoder.java
blob: 7c7fa3320ae9fd510baad7adebab85fed9d034b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
/*
 * Copyright 2015 - 2021 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 io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
import org.traccar.helper.BcdUtil;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;

import java.math.BigInteger;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;

public class T800xProtocolDecoder extends BaseProtocolDecoder {

    private short header = DEFAULT_HEADER;

    public short getHeader() {
        return header;
    }

    public T800xProtocolDecoder(Protocol protocol) {
        super(protocol);
    }

    public static final short DEFAULT_HEADER = 0x2323;

    public static final int MSG_LOGIN = 0x01;
    public static final int MSG_GPS = 0x02;
    public static final int MSG_HEARTBEAT = 0x03;
    public static final int MSG_ALARM = 0x04;
    public static final int MSG_NETWORK = 0x05; // 0x2727
    public static final int MSG_DRIVER_BEHAVIOR_1 = 0x05; // 0x2626
    public static final int MSG_DRIVER_BEHAVIOR_2 = 0x06; // 0x2626
    public static final int MSG_BLE = 0x10;
    public static final int MSG_GPS_2 = 0x13;
    public static final int MSG_ALARM_2 = 0x14;
    public static final int MSG_COMMAND = 0x81;

    private void sendResponse(Channel channel, short header, int type, int index, ByteBuf imei, int alarm) {
        if (channel != null) {
            ByteBuf response = Unpooled.buffer(alarm > 0 ? 16 : 15);
            response.writeShort(header);
            response.writeByte(type);
            response.writeShort(response.capacity()); // length
            response.writeShort(index);
            response.writeBytes(imei);
            if (alarm > 0) {
                response.writeByte(alarm);
            }
            channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
        }
    }

    private String decodeAlarm(int value) {
        switch (value) {
            case 1:
                return Position.ALARM_POWER_CUT;
            case 2:
                return Position.ALARM_LOW_BATTERY;
            case 3:
                return Position.ALARM_SOS;
            case 4:
                return Position.ALARM_OVERSPEED;
            case 5:
                return Position.ALARM_GEOFENCE_ENTER;
            case 6:
                return Position.ALARM_GEOFENCE_EXIT;
            case 7:
                return Position.ALARM_TOW;
            case 8:
            case 10:
                return Position.ALARM_VIBRATION;
            case 21:
                return Position.ALARM_JAMMING;
            case 23:
                return Position.ALARM_POWER_RESTORED;
            case 24:
                return Position.ALARM_LOW_POWER;
            default:
                return null;
        }
    }

    private Date readDate(ByteBuf buf) {
        return new DateBuilder()
                .setYear(BcdUtil.readInteger(buf, 2))
                .setMonth(BcdUtil.readInteger(buf, 2))
                .setDay(BcdUtil.readInteger(buf, 2))
                .setHour(BcdUtil.readInteger(buf, 2))
                .setMinute(BcdUtil.readInteger(buf, 2))
                .setSecond(BcdUtil.readInteger(buf, 2))
                .getDate();
    }

    @Override
    protected Object decode(
            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

        ByteBuf buf = (ByteBuf) msg;

        header = buf.readShort();
        int type = buf.readUnsignedByte();
        buf.readUnsignedShort(); // length
        int index = buf.readUnsignedShort();
        ByteBuf imei = buf.readSlice(8);

        DeviceSession deviceSession = getDeviceSession(
                channel, remoteAddress, ByteBufUtil.hexDump(imei).substring(1));
        if (deviceSession == null) {
            return null;
        }

        if (type != MSG_GPS && type != MSG_GPS_2 && type != MSG_ALARM) {
            sendResponse(channel, header, type, index, imei, 0);
        }

        if (type == MSG_GPS || type == MSG_GPS_2 ||type == MSG_ALARM || type == MSG_ALARM_2) {

            return decodePosition(channel, deviceSession, buf, type, index, imei);

        } else if (type == MSG_NETWORK && header == 0x2727) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            getLastLocation(position, readDate(buf));

            position.set(Position.KEY_OPERATOR, buf.readCharSequence(
                    buf.readUnsignedByte(), StandardCharsets.UTF_16LE).toString());
            position.set("networkTechnology", buf.readCharSequence(
                    buf.readUnsignedByte(), StandardCharsets.US_ASCII).toString());
            position.set("networkBand", buf.readCharSequence(
                    buf.readUnsignedByte(), StandardCharsets.US_ASCII).toString());
            buf.readCharSequence(buf.readUnsignedByte(), StandardCharsets.US_ASCII); // imsi
            position.set(Position.KEY_ICCID, buf.readCharSequence(
                    buf.readUnsignedByte(), StandardCharsets.US_ASCII).toString());

            return position;

        } else if ((type == MSG_DRIVER_BEHAVIOR_1 || type == MSG_DRIVER_BEHAVIOR_2) && header == 0x2626) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            switch (buf.readUnsignedByte()) {
                case 0:
                case 4:
                    position.set(Position.KEY_ALARM, Position.ALARM_BRAKING);
                    break;
                case 1:
                case 3:
                case 5:
                    position.set(Position.KEY_ALARM, Position.ALARM_ACCELERATION);
                    break;
                case 2:
                    if (type == MSG_DRIVER_BEHAVIOR_1) {
                        position.set(Position.KEY_ALARM, Position.ALARM_BRAKING);
                    } else {
                        position.set(Position.KEY_ALARM, Position.ALARM_CORNERING);
                    }
                    break;
                default:
                    break;
            }

            position.setTime(readDate(buf));

            if (type == MSG_DRIVER_BEHAVIOR_2) {
                int status = buf.readUnsignedByte();
                position.setValid(!BitUtil.check(status, 7));
                buf.skipBytes(5); // acceleration
            } else {
                position.setValid(true);
            }

            position.setAltitude(buf.readFloatLE());
            position.setLongitude(buf.readFloatLE());
            position.setLatitude(buf.readFloatLE());
            position.setSpeed(UnitsConverter.knotsFromKph(BcdUtil.readInteger(buf, 4) * 0.1));
            position.setCourse(buf.readUnsignedShort());

            position.set(Position.KEY_RPM, buf.readUnsignedShort());

            return position;

        } else if (type == MSG_BLE) {

            return decodeBle(channel, deviceSession, buf, type, index, imei);

        } else if (type == MSG_COMMAND) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            getLastLocation(position, null);

            buf.readUnsignedByte(); // protocol number

            position.set(Position.KEY_RESULT, buf.toString(StandardCharsets.UTF_16LE));

            return position;

        }

        return null;
    }

    private Position decodeBle(
            Channel channel, DeviceSession deviceSession, ByteBuf buf, int type, int index, ByteBuf imei) {

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        getLastLocation(position, readDate(buf));

        position.set(Position.KEY_IGNITION, buf.readUnsignedByte() > 0);

        int i = 1;
        while (buf.isReadable()) {
            switch (buf.readUnsignedShort()) {
                case 0x01:
                    position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                    position.set("tag" + i + "Battery", buf.readUnsignedByte() * 0.01 + 1.22);
                    position.set("tag" + i + "TirePressure", buf.readUnsignedByte() * 1.527 * 2);
                    position.set("tag" + i + "TireTemp", buf.readUnsignedByte() - 55);
                    position.set("tag" + i + "TireStatus", buf.readUnsignedByte());
                    break;
                case 0x02:
                    position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                    position.set("tag" + i + "Battery", BcdUtil.readInteger(buf, 2) * 0.1);
                    switch (buf.readUnsignedByte()) {
                        case 0:
                            position.set(Position.KEY_ALARM, Position.ALARM_SOS);
                            break;
                        case 1:
                            position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY);
                            break;
                        default:
                            break;
                    }
                    buf.readUnsignedByte(); // status
                    buf.skipBytes(16); // location
                    break;
                case 0x03:
                    position.set(Position.KEY_DRIVER_UNIQUE_ID, ByteBufUtil.hexDump(buf.readSlice(6)));
                    position.set("tag" + i + "Battery", BcdUtil.readInteger(buf, 2) * 0.1);
                    if (buf.readUnsignedByte() == 1) {
                        position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY);
                    }
                    buf.readUnsignedByte(); // status
                    buf.skipBytes(16); // location
                    break;
                case 0x04:
                    position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                    position.set("tag" + i + "Battery", buf.readUnsignedByte() * 0.01 + 2);
                    buf.readUnsignedByte(); // battery level
                    position.set("tag" + i + "Temp", buf.readUnsignedShort() * 0.01);
                    position.set("tag" + i + "Humidity", buf.readUnsignedShort() * 0.01);
                    position.set("tag" + i + "LightSensor", buf.readUnsignedShort());
                    position.set("tag" + i + "Rssi", buf.readUnsignedByte() - 128);
                    break;
                case 0x05:
                    position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                    position.set("tag" + i + "Battery", buf.readUnsignedByte() * 0.01 + 2);
                    buf.readUnsignedByte(); // battery level
                    position.set("tag" + i + "Temp", buf.readUnsignedShort() * 0.01);
                    position.set("tag" + i + "Door", buf.readUnsignedByte() > 0);
                    position.set("tag" + i + "Rssi", buf.readUnsignedByte() - 128);
                    break;
                case 0x06:
                    position.set("tag" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(6)));
                    position.set("tag" + i + "Battery", buf.readUnsignedByte() * 0.01 + 2);
                    position.set("tag" + i + "Output", buf.readUnsignedByte() > 0);
                    position.set("tag" + i + "Rssi", buf.readUnsignedByte() - 128);
                    break;
                default:
                    break;
            }
            i += 1;
        }

        sendResponse(channel, header, type, index, imei, 0);

        return position;
    }

    private Position decodePosition(
            Channel channel, DeviceSession deviceSession, ByteBuf buf, int type, int index, ByteBuf imei) {

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        position.set(Position.KEY_INDEX, index);

        if (header != 0x2727) {

            buf.readUnsignedShort(); // acc on interval
            buf.readUnsignedShort(); // acc off interval
            buf.readUnsignedByte(); // angle compensation
            buf.readUnsignedShort(); // distance compensation

            position.set(Position.KEY_RSSI, BitUtil.to(buf.readUnsignedShort(), 7));

        }

        int status = buf.readUnsignedByte();
        position.set(Position.KEY_SATELLITES, BitUtil.to(status, 5));

        if (header != 0x2727) {

            buf.readUnsignedByte(); // gsensor manager status
            buf.readUnsignedByte(); // other flags
            buf.readUnsignedByte(); // heartbeat
            buf.readUnsignedByte(); // relay status
            buf.readUnsignedShort(); // drag alarm setting

            int io = buf.readUnsignedShort();
            position.set(Position.KEY_IGNITION, BitUtil.check(io, 14));
            position.set("ac", BitUtil.check(io, 13));
            position.set(Position.PREFIX_IN + 3, BitUtil.check(io, 12));
            position.set(Position.PREFIX_IN + 4, BitUtil.check(io, 11));

            if (type == MSG_GPS_2 || type == MSG_ALARM_2) {
                position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());
                buf.readUnsignedByte(); // reserved
            } else {
                position.set(Position.PREFIX_OUT + 1, BitUtil.check(io, 7));
                position.set(Position.PREFIX_OUT + 2, BitUtil.check(io, 8));
                position.set(Position.PREFIX_OUT + 3, BitUtil.check(io, 9));
            }

            if (header != 0x2626) {
                int adcCount = type == MSG_GPS_2 || type == MSG_ALARM_2 ? 5 : 2;
                for (int i = 1; i <= adcCount; i++) {
                    String value = ByteBufUtil.hexDump(buf.readSlice(2));
                    if (!value.equals("ffff")) {
                        position.set(Position.PREFIX_ADC + i, Integer.parseInt(value) * 0.01);
                    }
                }
            }

        }

        int alarm = buf.readUnsignedByte();
        position.set(Position.KEY_ALARM, decodeAlarm(alarm));

        if (header != 0x2727) {

            buf.readUnsignedByte(); // reserved

            position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());

            int battery = BcdUtil.readInteger(buf, 2);
            position.set(Position.KEY_BATTERY_LEVEL, battery > 0 ? battery : 100);

        }

        if (BitUtil.check(status, 6)) {

            position.setValid(!BitUtil.check(status, 7));
            position.setTime(readDate(buf));
            position.setAltitude(buf.readFloatLE());
            position.setLongitude(buf.readFloatLE());
            position.setLatitude(buf.readFloatLE());
            position.setSpeed(UnitsConverter.knotsFromKph(BcdUtil.readInteger(buf, 4) * 0.1));
            position.setCourse(buf.readUnsignedShort());

        } else {

            getLastLocation(position, readDate(buf));

            int mcc = buf.readUnsignedShortLE();
            int mnc = buf.readUnsignedShortLE();

            if (mcc != 0xffff && mnc != 0xffff) {
                Network network = new Network();
                for (int i = 0; i < 3; i++) {
                    network.addCellTower(CellTower.from(
                            mcc, mnc, buf.readUnsignedShortLE(), buf.readUnsignedShortLE()));
                }
                position.setNetwork(network);
            }

        }

        if (header == 0x2727) {

            byte[] accelerationBytes = new byte[5];
            buf.readBytes(accelerationBytes);
            long acceleration = new BigInteger(accelerationBytes).longValue();
            double accelerationZ = BitUtil.between(acceleration, 8, 15) + BitUtil.between(acceleration, 4, 8) * 0.1;
            if (!BitUtil.check(acceleration, 15)) {
                accelerationZ = -accelerationZ;
            }
            double accelerationY = BitUtil.between(acceleration, 20, 27) + BitUtil.between(acceleration, 16, 20) * 0.1;
            if (!BitUtil.check(acceleration, 27)) {
                accelerationY = -accelerationY;
            }
            double accelerationX = BitUtil.between(acceleration, 28, 32) + BitUtil.between(acceleration, 32, 39) * 0.1;
            if (!BitUtil.check(acceleration, 39)) {
                accelerationX = -accelerationX;
            }
            position.set(Position.KEY_G_SENSOR, "[" + accelerationX + "," + accelerationY + "," + accelerationZ + "]");

            int battery = BcdUtil.readInteger(buf, 2);
            position.set(Position.KEY_BATTERY_LEVEL, battery > 0 ? battery : 100);
            position.set(Position.KEY_DEVICE_TEMP, (int) buf.readByte());
            position.set("lightSensor", BcdUtil.readInteger(buf, 2) * 0.1);
            position.set(Position.KEY_BATTERY, BcdUtil.readInteger(buf, 2) * 0.1);
            position.set("solarPanel", BcdUtil.readInteger(buf, 2) * 0.1);
            position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());

            int inputStatus = buf.readUnsignedShort();
            position.set(Position.KEY_IGNITION, BitUtil.check(inputStatus, 2));
            position.set(Position.KEY_RSSI, BitUtil.between(inputStatus, 4, 11));

            buf.readUnsignedShort(); // ignition on upload interval
            buf.readUnsignedInt(); // ignition off upload interval
            buf.readUnsignedByte(); // angle upload interval
            buf.readUnsignedShort(); // distance upload interval
            buf.readUnsignedByte(); // heartbeat

        } else {

            if (buf.readableBytes() >= 2) {
                position.set(Position.KEY_POWER, BcdUtil.readInteger(buf, 4) * 0.01);
            }
            if (buf.readableBytes() >= 19) {
                position.set(Position.KEY_OBD_SPEED, BcdUtil.readInteger(buf, 4) * 0.01);
                position.set(Position.KEY_FUEL_USED, buf.readUnsignedInt() * 0.001);
                position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedInt() * 0.001);
                position.set(Position.KEY_RPM, buf.readUnsignedShort());
                int value;
                value = buf.readUnsignedByte();
                if (value != 0xff) {
                    position.set("airInput", value);
                }
                if (value != 0xff) {
                    position.set("airPressure", value);
                }
                if (value != 0xff) {
                    position.set(Position.KEY_COOLANT_TEMP, value - 40);
                }
                if (value != 0xff) {
                    position.set("airTemp", value - 40);
                }
                if (value != 0xff) {
                    position.set(Position.KEY_ENGINE_LOAD, value);
                }
                if (value != 0xff) {
                    position.set(Position.KEY_THROTTLE, value);
                }
                if (value != 0xff) {
                    position.set(Position.KEY_FUEL_LEVEL, value);
                }
            }
        }

        sendResponse(channel, header, type, index, imei, alarm);

        return position;
    }

}