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
|
/*
* Copyright 2017 - 2018 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.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.Context;
import org.traccar.DeviceSession;
import org.traccar.helper.DataConverter;
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.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Xt2400ProtocolDecoder extends BaseProtocolDecoder {
public Xt2400ProtocolDecoder(Xt2400Protocol protocol) {
super(protocol);
String config = Context.getConfig().getString(getProtocolName() + ".config");
if (config != null) {
setConfig(config);
}
}
private static final Map<Integer, Integer> TAG_LENGTH_MAP = new HashMap<>();
static {
int[] l1 = {
0x01, 0x02, 0x04, 0x0b, 0x0c, 0x0d, 0x12, 0x13,
0x16, 0x17, 0x1c, 0x1f, 0x23, 0x2c, 0x2d, 0x30,
0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x40, 0x41,
0x53, 0x66, 0x69, 0x6a, 0x93, 0x94, 0x96
};
int[] l2 = {
0x05, 0x09, 0x0a, 0x14, 0x15, 0x1d, 0x1e, 0x24,
0x26, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0x49, 0x57, 0x58, 0x59, 0x5a, 0x6b, 0x6f, 0x7A,
0x7B, 0x7C, 0x7d, 0x7E, 0x7F, 0x80, 0x81, 0x82,
0x83, 0x84, 0x85, 0x86
};
int[] l4 = {
0x03, 0x06, 0x07, 0x08, 0x0e, 0x0f, 0x10, 0x11,
0x18, 0x19, 0x1a, 0x1b, 0x20, 0x21, 0x22, 0x2e,
0x2f, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50,
0x51, 0x52, 0x54, 0x55, 0x56, 0x5b, 0x5c, 0x5d,
0x5e, 0x5f, 0x60, 0x61, 0x62, 0x68, 0x6e, 0x71,
0x72, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d
};
for (int i : l1) {
TAG_LENGTH_MAP.put(i, 1);
}
for (int i : l2) {
TAG_LENGTH_MAP.put(i, 2);
}
for (int i : l4) {
TAG_LENGTH_MAP.put(i, 4);
}
TAG_LENGTH_MAP.put(0x95, 24);
}
private static int getTagLength(int tag) {
Integer length = TAG_LENGTH_MAP.get(tag);
if (length == null) {
throw new IllegalArgumentException("Unknown tag: " + tag);
}
return length;
}
private Map<Short, byte[]> formats = new HashMap<>();
public void setConfig(String configString) {
Pattern pattern = Pattern.compile(":wycfg pcr\\[\\d+\\] ([0-9a-fA-F]{2})[0-9a-fA-F]{2}([0-9a-fA-F]+)");
Matcher matcher = pattern.matcher(configString);
while (matcher.find()) {
formats.put(Short.parseShort(matcher.group(1), 16), DataConverter.parseHex(matcher.group(2)));
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
byte[] format = null;
if (formats.size() > 1) {
format = formats.get(buf.getUnsignedByte(buf.readerIndex()));
} else if (!formats.isEmpty()) {
format = formats.values().iterator().next();
}
if (format == null) {
return null;
}
Position position = new Position(getProtocolName());
for (byte tag : format) {
switch (tag) {
case 0x03:
DeviceSession deviceSession = getDeviceSession(
channel, remoteAddress, String.valueOf(buf.readUnsignedInt()));
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
break;
case 0x04:
position.set(Position.KEY_EVENT, buf.readUnsignedByte());
break;
case 0x05:
position.set(Position.KEY_INDEX, buf.readUnsignedShort());
break;
case 0x06:
position.setTime(new Date(buf.readUnsignedInt() * 1000));
break;
case 0x07:
position.setLatitude(buf.readInt() * 0.000001);
break;
case 0x08:
position.setLongitude(buf.readInt() * 0.000001);
break;
case 0x09:
position.setAltitude(buf.readShort() * 0.1);
break;
case 0x0a:
position.setCourse(buf.readShort() * 0.1);
break;
case 0x0b:
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
break;
case 0x10:
position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedInt());
break;
case 0x12:
position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1);
break;
case 0x13:
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
break;
case 0x14:
position.set(Position.KEY_RSSI, buf.readShort());
break;
case 0x16:
position.set(Position.KEY_BATTERY, buf.readUnsignedByte() * 0.1);
break;
case 0x17:
position.set(Position.KEY_POWER, buf.readUnsignedByte() * 0.1);
break;
case 0x57:
position.set(Position.KEY_OBD_SPEED, UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
break;
case 0x65:
position.set(Position.KEY_VIN, buf.readSlice(17).toString(StandardCharsets.US_ASCII));
break;
case 0x73:
position.set(Position.KEY_VERSION_FW, buf.readSlice(16).toString(StandardCharsets.US_ASCII).trim());
break;
default:
buf.skipBytes(getTagLength(tag));
break;
}
}
if (position.getLatitude() != 0 && position.getLongitude() != 0) {
position.setValid(true);
} else {
getLastLocation(position, position.getDeviceTime());
}
return position;
}
}
|
