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
|
/*
* Copyright 2019 - 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.BitUtil;
import org.traccar.helper.Checksum;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import org.traccar.model.WifiAccessPoint;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
public Minifinder2ProtocolDecoder(Protocol protocol) {
super(protocol);
}
public static final int MSG_DATA = 0x01;
public static final int MSG_CONFIGURATION = 0x02;
public static final int MSG_SERVICES = 0x03;
public static final int MSG_RESPONSE = 0x7F;
private String decodeAlarm(int code) {
if (BitUtil.check(code, 0)) {
return Position.ALARM_LOW_BATTERY;
}
if (BitUtil.check(code, 1)) {
return Position.ALARM_OVERSPEED;
}
if (BitUtil.check(code, 2)) {
return Position.ALARM_FALL_DOWN;
}
if (BitUtil.check(code, 8)) {
return Position.ALARM_POWER_OFF;
}
if (BitUtil.check(code, 9)) {
return Position.ALARM_POWER_ON;
}
if (BitUtil.check(code, 12)) {
return Position.ALARM_SOS;
}
return null;
}
private void sendResponse(Channel channel, SocketAddress remoteAddress, int index, int type, ByteBuf buf) {
if (channel != null) {
ByteBuf body = Unpooled.buffer();
if (type == MSG_SERVICES) {
while (buf.isReadable()) {
int endIndex = buf.readUnsignedByte() + buf.readerIndex();
int key = buf.readUnsignedByte();
switch (key) {
case 0x11:
case 0x21:
case 0x22:
body.writeByte(9 + 1); // length
body.writeByte(key);
body.writeIntLE(0); // latitude
body.writeIntLE(0); // longitude
body.writeByte(0); // address
break;
case 0x12:
body.writeByte(5); // length
body.writeByte(key);
body.writeIntLE((int) (System.currentTimeMillis() / 1000));
break;
default:
break;
}
buf.readerIndex(endIndex);
}
} else {
body.writeByte(1); // key length
body.writeByte(0); // success
}
ByteBuf content = Unpooled.buffer();
content.writeByte(type == MSG_SERVICES ? type : MSG_RESPONSE);
content.writeBytes(body);
body.release();
ByteBuf response = Unpooled.buffer();
response.writeByte(0xAB); // header
response.writeByte(0x00); // properties
response.writeShortLE(content.readableBytes());
response.writeShortLE(Checksum.crc16(Checksum.CRC16_XMODEM, content.nioBuffer()));
response.writeShortLE(index);
response.writeBytes(content);
content.release();
channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
buf.readUnsignedByte(); // header
int flags = buf.readUnsignedByte();
buf.readUnsignedShortLE(); // length
buf.readUnsignedShortLE(); // checksum
int index = buf.readUnsignedShortLE();
int type = buf.readUnsignedByte();
if (BitUtil.check(flags, 4)) {
sendResponse(channel, remoteAddress, index, type, buf);
}
if (type == MSG_DATA) {
List<Position> positions = new LinkedList<>();
Set<Integer> keys = new HashSet<>();
boolean hasLocation = false;
Position position = new Position(getProtocolName());
DeviceSession deviceSession = null;
while (buf.isReadable()) {
int endIndex = buf.readUnsignedByte() + buf.readerIndex();
int key = buf.readUnsignedByte();
if (keys.contains(key)) {
if (!hasLocation) {
getLastLocation(position, null);
}
positions.add(position);
keys.clear();
hasLocation = false;
position = new Position(getProtocolName());
}
keys.add(key);
switch (key) {
case 0x01:
deviceSession = getDeviceSession(
channel, remoteAddress, buf.readCharSequence(15, StandardCharsets.US_ASCII).toString());
position.setDeviceId(deviceSession.getDeviceId());
break;
case 0x02:
position.set(Position.KEY_ALARM, decodeAlarm(buf.readIntLE()));
break;
case 0x14:
position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
break;
case 0x20:
hasLocation = true;
position.setLatitude(buf.readIntLE() * 0.0000001);
position.setLongitude(buf.readIntLE() * 0.0000001);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
position.setCourse(buf.readUnsignedShortLE());
position.setAltitude(buf.readShortLE());
position.setValid(buf.readUnsignedShortLE() > 0);
position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
break;
case 0x21:
int mcc = buf.readUnsignedShortLE();
int mnc = buf.readUnsignedByte();
if (position.getNetwork() == null) {
position.setNetwork(new Network());
}
while (buf.readerIndex() < endIndex) {
int rssi = buf.readByte();
position.getNetwork().addCellTower(CellTower.from(
mcc, mnc, buf.readUnsignedShortLE(), buf.readUnsignedShortLE(), rssi));
}
break;
case 0x22:
if (position.getNetwork() == null) {
position.setNetwork(new Network());
}
while (buf.readerIndex() < endIndex) {
int rssi = buf.readByte();
String mac = ByteBufUtil.hexDump(buf.readSlice(6)).replaceAll("(..)", "$1:");
position.getNetwork().addWifiAccessPoint(WifiAccessPoint.from(
mac.substring(0, mac.length() - 1), rssi));
}
break;
case 0x23:
position.set("tagId", ByteBufUtil.hexDump(buf.readSlice(6)));
position.setLatitude(buf.readIntLE() * 0.0000001);
position.setLongitude(buf.readIntLE() * 0.0000001);
hasLocation = true;
break;
case 0x24:
position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
long status = buf.readUnsignedIntLE();
position.set(Position.KEY_BATTERY_LEVEL, BitUtil.from(status, 24));
position.set(Position.KEY_STATUS, status);
break;
case 0x28:
int beaconFlags = buf.readUnsignedByte();
position.set("tagId", ByteBufUtil.hexDump(buf.readSlice(6)));
position.set("tagRssi", buf.readUnsignedByte());
buf.readUnsignedByte(); // 1m rssi
if (BitUtil.check(beaconFlags, 7)) {
position.setLatitude(buf.readIntLE() * 0.0000001);
position.setLongitude(buf.readIntLE() * 0.0000001);
hasLocation = true;
}
if (BitUtil.check(beaconFlags, 6)) {
position.set("description", buf.readCharSequence(
endIndex - buf.readerIndex(), StandardCharsets.US_ASCII).toString());
}
break;
case 0x30:
buf.readUnsignedInt(); // timestamp
position.set(Position.KEY_STEPS, buf.readUnsignedInt());
break;
case 0x40:
buf.readUnsignedIntLE(); // timestamp
int heartRate = buf.readUnsignedByte();
if (heartRate > 1) {
position.set(Position.KEY_HEART_RATE, heartRate);
}
break;
default:
break;
}
buf.readerIndex(endIndex);
}
if (!hasLocation) {
getLastLocation(position, null);
}
positions.add(position);
if (deviceSession != null) {
for (Position p : positions) {
p.setDeviceId(deviceSession.getDeviceId());
}
} else {
return null;
}
return positions;
}
return null;
}
}
|
