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 2012 - 2020 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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.Protocol;
import org.traccar.config.Keys;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
public class SkypatrolProtocolDecoder extends BaseProtocolDecoder {
private static final Logger LOGGER = LoggerFactory.getLogger(SkypatrolProtocolDecoder.class);
private long defaultMask;
public SkypatrolProtocolDecoder(Protocol protocol) {
super(protocol);
}
@Override
protected void init() {
defaultMask = getConfig().getInteger(Keys.PROTOCOL_MASK.withPrefix(getProtocolName()));
}
private static double convertCoordinate(long coordinate) {
int sign = 1;
if (coordinate > 0x7fffffffL) {
sign = -1;
coordinate = 0xffffffffL - coordinate;
}
long degrees = coordinate / 1000000;
double minutes = (coordinate % 1000000) / 10000.0;
return sign * (degrees + minutes / 60);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
int apiNumber = buf.readUnsignedShort();
int commandType = buf.readUnsignedByte();
int messageType = BitUtil.from(buf.readUnsignedByte(), 4);
long mask = defaultMask;
if (buf.readUnsignedByte() == 4) {
mask = buf.readUnsignedInt();
}
// Binary position report
if (apiNumber == 5 && commandType == 2 && messageType == 1 && BitUtil.check(mask, 0)) {
Position position = new Position(getProtocolName());
if (BitUtil.check(mask, 1)) {
position.set(Position.KEY_STATUS, buf.readUnsignedInt());
}
String id;
if (BitUtil.check(mask, 23)) {
id = buf.toString(buf.readerIndex(), 8, StandardCharsets.US_ASCII).trim();
buf.skipBytes(8);
} else if (BitUtil.check(mask, 2)) {
id = buf.toString(buf.readerIndex(), 22, StandardCharsets.US_ASCII).trim();
buf.skipBytes(22);
} else {
LOGGER.warn("No device id field");
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
if (BitUtil.check(mask, 3)) {
position.set(Position.PREFIX_IO + 1, buf.readUnsignedShort());
}
if (BitUtil.check(mask, 4)) {
position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
}
if (BitUtil.check(mask, 5)) {
position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
}
if (BitUtil.check(mask, 7)) {
buf.readUnsignedByte(); // function category
}
DateBuilder dateBuilder = new DateBuilder();
if (BitUtil.check(mask, 8)) {
dateBuilder.setDateReverse(
buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
}
if (BitUtil.check(mask, 9)) {
position.setValid(buf.readUnsignedByte() == 1); // gps status
}
if (BitUtil.check(mask, 10)) {
position.setLatitude(convertCoordinate(buf.readUnsignedInt()));
}
if (BitUtil.check(mask, 11)) {
position.setLongitude(convertCoordinate(buf.readUnsignedInt()));
}
if (BitUtil.check(mask, 12)) {
position.setSpeed(buf.readUnsignedShort() / 10.0);
}
if (BitUtil.check(mask, 13)) {
position.setCourse(buf.readUnsignedShort() / 10.0);
}
if (BitUtil.check(mask, 14)) {
dateBuilder.setTime(
buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
}
position.setTime(dateBuilder.getDate());
if (BitUtil.check(mask, 15)) {
position.setAltitude(buf.readMedium());
}
if (BitUtil.check(mask, 16)) {
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
}
if (BitUtil.check(mask, 17)) {
position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
}
if (BitUtil.check(mask, 20)) {
position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedInt());
}
if (BitUtil.check(mask, 21)) {
position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
}
if (BitUtil.check(mask, 22)) {
buf.skipBytes(6); // time of message generation
}
if (BitUtil.check(mask, 24)) {
position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
}
if (BitUtil.check(mask, 25)) {
buf.skipBytes(18); // gps overspeed
}
if (BitUtil.check(mask, 26)) {
buf.skipBytes(54); // cell information
}
if (BitUtil.check(mask, 28)) {
position.set(Position.KEY_INDEX, buf.readUnsignedShort());
}
return position;
}
return null;
}
}
|
