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
|
/*
* Copyright 2013 - 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.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
public class TeltonikaProtocolDecoder extends BaseProtocolDecoder {
public TeltonikaProtocolDecoder(TeltonikaProtocol protocol) {
super(protocol);
}
private void parseIdentification(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
int length = buf.readUnsignedShort();
String imei = buf.toString(buf.readerIndex(), length, StandardCharsets.US_ASCII);
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
if (channel != null) {
ChannelBuffer response = ChannelBuffers.directBuffer(1);
if (deviceSession != null) {
response.writeByte(1);
} else {
response.writeByte(0);
}
channel.write(response);
}
}
public static final int CODEC_GH3000 = 0x07;
public static final int CODEC_FM4X00 = 0x08;
public static final int CODEC_12 = 0x0C;
private void decodeSerial(Position position, ChannelBuffer buf) {
getLastLocation(position, null);
position.set(Position.KEY_TYPE, buf.readUnsignedByte());
position.set("command", buf.readBytes(buf.readInt()).toString(StandardCharsets.US_ASCII));
}
private void decodeParameter(Position position, int id, long value) {
switch (id) {
case 9:
position.set(Position.PREFIX_ADC + 1, value);
break;
case 66:
position.set(Position.KEY_POWER, value);
break;
case 68:
position.set(Position.KEY_BATTERY, value);
break;
case 85:
position.set(Position.KEY_RPM, value);
break;
case 182:
position.set(Position.KEY_HDOP, value);
break;
case 239:
position.set(Position.KEY_IGNITION, value == 1);
break;
default:
position.set(Position.PREFIX_IO + id, value);
break;
}
}
private void decodeLocation(Position position, ChannelBuffer buf, int codec) {
int globalMask = 0x0f;
if (codec == CODEC_GH3000) {
long time = buf.readUnsignedInt() & 0x3fffffff;
time += 1167609600; // 2007-01-01 00:00:00
globalMask = buf.readUnsignedByte();
if (BitUtil.check(globalMask, 0)) {
position.setTime(new Date(time * 1000));
int locationMask = buf.readUnsignedByte();
if (BitUtil.check(locationMask, 0)) {
position.setLatitude(buf.readFloat());
position.setLongitude(buf.readFloat());
}
if (BitUtil.check(locationMask, 1)) {
position.setAltitude(buf.readUnsignedShort());
}
if (BitUtil.check(locationMask, 2)) {
position.setCourse(buf.readUnsignedByte() * 360.0 / 256);
}
if (BitUtil.check(locationMask, 3)) {
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
}
if (BitUtil.check(locationMask, 4)) {
int satellites = buf.readUnsignedByte();
position.set(Position.KEY_SATELLITES, satellites);
position.setValid(satellites >= 3);
}
if (BitUtil.check(locationMask, 5)) {
position.set(Position.KEY_LAC, buf.readUnsignedShort());
position.set(Position.KEY_CID, buf.readUnsignedShort());
}
if (BitUtil.check(locationMask, 6)) {
position.set(Position.KEY_GSM, buf.readUnsignedByte());
}
if (BitUtil.check(locationMask, 7)) {
position.set("operator", buf.readUnsignedInt());
}
} else {
getLastLocation(position, new Date(time * 1000));
}
} else {
position.setTime(new Date(buf.readLong()));
position.set("priority", buf.readUnsignedByte());
position.setLongitude(buf.readInt() / 10000000.0);
position.setLatitude(buf.readInt() / 10000000.0);
position.setAltitude(buf.readShort());
position.setCourse(buf.readUnsignedShort());
int satellites = buf.readUnsignedByte();
position.set(Position.KEY_SATELLITES, satellites);
position.setValid(satellites != 0);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
position.set(Position.KEY_EVENT, buf.readUnsignedByte());
buf.readUnsignedByte(); // total IO data records
}
// Read 1 byte data
if (BitUtil.check(globalMask, 1)) {
int cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
decodeParameter(position, buf.readUnsignedByte(), buf.readUnsignedByte());
}
}
// Read 2 byte data
if (BitUtil.check(globalMask, 2)) {
int cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
decodeParameter(position, buf.readUnsignedByte(), buf.readUnsignedShort());
}
}
// Read 4 byte data
if (BitUtil.check(globalMask, 3)) {
int cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
decodeParameter(position, buf.readUnsignedByte(), buf.readUnsignedInt());
}
}
// Read 8 byte data
if (codec == CODEC_FM4X00) {
int cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
decodeParameter(position, buf.readUnsignedByte(), buf.readLong());
}
}
}
private List<Position> parseData(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
List<Position> positions = new LinkedList<>();
buf.skipBytes(4); // marker
buf.readUnsignedInt(); // data length
int codec = buf.readUnsignedByte();
int count = buf.readUnsignedByte();
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
for (int i = 0; i < count; i++) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
if (codec == CODEC_12) {
decodeSerial(position, buf);
} else {
decodeLocation(position, buf, codec);
}
positions.add(position);
}
if (channel != null) {
ChannelBuffer response = ChannelBuffers.directBuffer(4);
response.writeInt(count);
channel.write(response);
}
return positions;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
if (buf.getUnsignedShort(0) > 0) {
parseIdentification(channel, remoteAddress, buf);
} else {
return parseData(channel, remoteAddress, buf);
}
return null;
}
}
|
