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
|
/*
* Copyright 2013 - 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.buffer.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
public class NoranProtocolDecoder extends BaseProtocolDecoder {
public NoranProtocolDecoder(NoranProtocol protocol) {
super(protocol);
}
public static final int MSG_UPLOAD_POSITION = 0x0008;
public static final int MSG_UPLOAD_POSITION_NEW = 0x0032;
public static final int MSG_CONTROL = 0x0002;
public static final int MSG_CONTROL_RESPONSE = 0x8009;
public static final int MSG_ALARM = 0x0003;
public static final int MSG_SHAKE_HAND = 0x0000;
public static final int MSG_SHAKE_HAND_RESPONSE = 0x8000;
public static final int MSG_IMAGE_SIZE = 0x0200;
public static final int MSG_IMAGE_PACKET = 0x0201;
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
buf.readUnsignedShortLE(); // length
int type = buf.readUnsignedShortLE();
if (type == MSG_SHAKE_HAND && channel != null) {
ByteBuf response = Unpooled.buffer(13);
response.writeBytes(Unpooled.copiedBuffer("\r\n*KW", StandardCharsets.US_ASCII));
response.writeByte(0);
response.writeShortLE(response.capacity());
response.writeShortLE(MSG_SHAKE_HAND_RESPONSE);
response.writeByte(1); // status
response.writeBytes(Unpooled.copiedBuffer("\r\n", StandardCharsets.US_ASCII));
channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
} else if (type == MSG_UPLOAD_POSITION || type == MSG_UPLOAD_POSITION_NEW
|| type == MSG_CONTROL_RESPONSE || type == MSG_ALARM) {
boolean newFormat = false;
if (type == MSG_UPLOAD_POSITION && buf.readableBytes() == 48
|| type == MSG_ALARM && buf.readableBytes() == 48
|| type == MSG_CONTROL_RESPONSE && buf.readableBytes() == 57) {
newFormat = true;
}
Position position = new Position(getProtocolName());
if (type == MSG_CONTROL_RESPONSE) {
buf.readUnsignedIntLE(); // GIS ip
buf.readUnsignedIntLE(); // GIS port
}
position.setValid(BitUtil.check(buf.readUnsignedByte(), 0));
short alarm = buf.readUnsignedByte();
switch (alarm) {
case 1:
position.set(Position.KEY_ALARM, Position.ALARM_SOS);
break;
case 2:
position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
break;
case 3:
position.set(Position.KEY_ALARM, Position.ALARM_GEOFENCE_EXIT);
break;
case 9:
position.set(Position.KEY_ALARM, Position.ALARM_POWER_OFF);
break;
default:
break;
}
if (newFormat) {
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedIntLE()));
position.setCourse(buf.readFloatLE());
} else {
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
position.setCourse(buf.readUnsignedShortLE());
}
position.setLongitude(buf.readFloatLE());
position.setLatitude(buf.readFloatLE());
if (!newFormat) {
long timeValue = buf.readUnsignedIntLE();
DateBuilder dateBuilder = new DateBuilder()
.setYear((int) BitUtil.from(timeValue, 26))
.setMonth((int) BitUtil.between(timeValue, 22, 26))
.setDay((int) BitUtil.between(timeValue, 17, 22))
.setHour((int) BitUtil.between(timeValue, 12, 17))
.setMinute((int) BitUtil.between(timeValue, 6, 12))
.setSecond((int) BitUtil.to(timeValue, 6));
position.setTime(dateBuilder.getDate());
}
ByteBuf rawId;
if (newFormat) {
rawId = buf.readSlice(12);
} else {
rawId = buf.readSlice(11);
}
String id = rawId.toString(StandardCharsets.US_ASCII).replaceAll("[^\\p{Print}]", "");
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
if (newFormat) {
DateFormat dateFormat = new SimpleDateFormat("yy-MM-dd HH:mm:ss");
position.setTime(dateFormat.parse(buf.readSlice(17).toString(StandardCharsets.US_ASCII)));
buf.readByte();
}
if (!newFormat) {
position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
} else if (type == MSG_UPLOAD_POSITION_NEW) {
position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
position.set(Position.KEY_ODOMETER, buf.readFloatLE());
}
return position;
}
return null;
}
}
|
