aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/TzoneProtocolDecoder.java
blob: 76903c90c1756ae297da9f79204bd70df4fa16ea (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
/*
 * Copyright 2015 - 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.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;

import java.net.SocketAddress;

public class TzoneProtocolDecoder extends BaseProtocolDecoder {

    public TzoneProtocolDecoder(TzoneProtocol protocol) {
        super(protocol);
    }

    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 0x14:
                return Position.ALARM_BRAKING;
            case 0x15:
                return Position.ALARM_ACCELERATION;
            case 0x30:
                return Position.ALARM_PARKING;
            case 0x42:
                return Position.ALARM_GEOFENCE_EXIT;
            case 0x43:
                return Position.ALARM_GEOFENCE_ENTER;
            default:
                return null;
        }
    }

    private void decodeCards(Position position, ChannelBuffer buf) {

        int index = 1;
        for (int i = 0; i < 4; i++) {

            int blockLength = buf.readUnsignedShort();
            int blockEnd = buf.readerIndex() + blockLength;

            if (blockLength > 0) {

                int count = buf.readUnsignedByte();
                for (int j = 0; j < count; j++) {

                    int length = buf.readUnsignedByte();

                    boolean odd = length % 2 != 0;
                    if (odd) {
                        length += 1;
                    }

                    String num = ChannelBuffers.hexDump(buf.readBytes(length / 2));

                    if (odd) {
                        num = num.substring(1);
                    }

                    position.set("card" + index, num);
                }
            }

            buf.readerIndex(blockEnd);
        }

    }

    private void decodePassengers(Position position, ChannelBuffer buf) {

        int blockLength = buf.readUnsignedShort();
        int blockEnd = buf.readerIndex() + blockLength;

        if (blockLength > 0) {

            position.set("passengersOn", buf.readUnsignedMedium());
            position.set("passengersOff", buf.readUnsignedMedium());

        }

        buf.readerIndex(blockEnd);

    }

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

        ChannelBuffer buf = (ChannelBuffer) msg;

        buf.skipBytes(2); // header
        buf.readUnsignedShort(); // length
        if (buf.readUnsignedShort() != 0x2424) {
            return null;
        }
        int hardware = buf.readUnsignedShort();
        long firmware = buf.readUnsignedInt();

        String imei = ChannelBuffers.hexDump(buf.readBytes(8)).substring(1);
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
        if (deviceSession == null) {
            return null;
        }

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

        position.set(Position.KEY_VERSION_HW, hardware);
        position.set(Position.KEY_VERSION_FW, firmware);

        position.setDeviceTime(new DateBuilder()
                .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()).getDate());

        // GPS info

        int blockLength = buf.readUnsignedShort();
        int blockEnd = buf.readerIndex() + blockLength;

        if (blockLength < 22) {
            return null;
        }

        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());

        double lat;
        double lon;

        if (hardware == 0x10A || hardware == 0x10B) {
            lat = buf.readUnsignedInt() / 600000.0;
            lon = buf.readUnsignedInt() / 600000.0;
        } else {
            lat = buf.readUnsignedInt() / 100000.0 / 60.0;
            lon = buf.readUnsignedInt() / 100000.0 / 60.0;
        }

        position.setFixTime(new DateBuilder()
                .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()).getDate());

        position.setSpeed(buf.readUnsignedShort() * 0.01);

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

        int flags = buf.readUnsignedShort();
        position.setCourse(BitUtil.to(flags, 9));
        if (!BitUtil.check(flags, 10)) {
            lat = -lat;
        }
        position.setLatitude(lat);
        if (BitUtil.check(flags, 9)) {
            lon = -lon;
        }
        position.setLongitude(lon);
        position.setValid(BitUtil.check(flags, 11));

        buf.readerIndex(blockEnd);

        // LBS info

        blockLength = buf.readUnsignedShort();
        blockEnd = buf.readerIndex() + blockLength;

        if (blockLength > 0 && (hardware == 0x10A || hardware == 0x10B)) {
            position.setNetwork(new Network(
                    CellTower.fromLacCid(buf.readUnsignedShort(), buf.readUnsignedShort())));
        }

        buf.readerIndex(blockEnd);

        // Status info

        blockLength = buf.readUnsignedShort();
        blockEnd = buf.readerIndex() + blockLength;

        if (blockLength >= 13) {
            position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
            position.set("terminalInfo", buf.readUnsignedByte());
            position.set(Position.PREFIX_IO + 1, buf.readUnsignedShort());
            position.set(Position.KEY_RSSI, buf.readUnsignedByte());
            position.set("gsmStatus", buf.readUnsignedByte());
            position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
            position.set(Position.KEY_POWER, buf.readUnsignedShort());
            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
        }

        if (blockLength >= 15) {
            position.set(Position.PREFIX_TEMP + 1, buf.readUnsignedShort());
        }

        buf.readerIndex(blockEnd);

        if (hardware == 0x10A || hardware == 0x10B) {

            decodeCards(position, buf);

            buf.skipBytes(buf.readUnsignedShort()); // temperature
            buf.skipBytes(buf.readUnsignedShort()); // lock

            decodePassengers(position, buf);

        }

        return position;
    }

}