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
|
/*
* Copyright 2013 - 2014 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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 java.nio.ByteOrder;
import java.nio.charset.Charset;
import java.util.Calendar;
import java.util.TimeZone;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.traccar.BaseProtocolDecoder;
import org.traccar.ServerManager;
import org.traccar.helper.Log;
import org.traccar.model.ExtendedInfoFormatter;
import org.traccar.model.Position;
public class NoranProtocolDecoder extends BaseProtocolDecoder {
public NoranProtocolDecoder(ServerManager serverManager) {
super(serverManager);
}
private static final int MSG_UPLOAD_POSITION = 0x0008;
private static final int MSG_CONTROL_RESPONSE = 0x8009;
private static final int MSG_ALARM = 0x0003;
private static final int MSG_SHAKE_HAND = 0x0000;
private static final int MSG_SHAKE_HAND_RESPONSE = 0x8000;
private static final int MSG_IMAGE_SIZE = 0x0200;
private static final int MSG_IMAGE_PACKET = 0x0201;
@Override
protected Object decode(
ChannelHandlerContext ctx, Channel channel, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.readUnsignedShort(); // length
int type = buf.readUnsignedShort();
if (type == MSG_SHAKE_HAND && channel != null) {
ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 13);
response.writeBytes(ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n*KW", Charset.defaultCharset()));
response.writeByte(0);
response.writeShort(response.capacity());
response.writeShort(MSG_SHAKE_HAND_RESPONSE);
response.writeByte(1); // status
response.writeBytes(ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n", Charset.defaultCharset()));
channel.write(response);
}
else if (type == MSG_UPLOAD_POSITION ||
type == MSG_CONTROL_RESPONSE ||
type == MSG_ALARM) {
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("noran");
if (type == MSG_CONTROL_RESPONSE) {
buf.readUnsignedInt(); // GIS ip
buf.readUnsignedInt(); // GIS port
}
// Flags
int flags = buf.readUnsignedByte();
position.setValid((flags & 0x01) != 0);
// Alarm type
extendedInfo.set("alarm", buf.readUnsignedByte());
// Location
position.setSpeed((double) buf.readUnsignedByte());
position.setCourse((double) buf.readUnsignedShort());
position.setLongitude((double) buf.readFloat());
position.setLatitude((double) buf.readFloat());
position.setAltitude(0.0);
// Time
long timeValue = buf.readUnsignedInt();
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, 2000 + (int) (timeValue >> 26));
time.set(Calendar.MONTH, (int) (timeValue >> 22 & 0x0f) - 1);
time.set(Calendar.DAY_OF_MONTH, (int) (timeValue >> 17 & 0x1f));
time.set(Calendar.HOUR, (int) (timeValue >> 12 & 0x1f));
time.set(Calendar.MINUTE, (int) (timeValue >> 6 & 0x3f));
time.set(Calendar.SECOND, (int) (timeValue & 0x3f));
position.setTime(time.getTime());
// Identification
String id = buf.readBytes(11).toString(Charset.defaultCharset());
try {
position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
} catch(Exception error) {
Log.warning("Unknown device - " + id);
}
// IO status
extendedInfo.set("io", buf.readUnsignedByte());
// Fuel
extendedInfo.set("fuel", buf.readUnsignedByte());
position.setExtendedInfo(extendedInfo.toString());
return position;
}
return null;
}
}
|
