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
|
/*
* 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.net.SocketAddress;
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);
}
public NoranProtocolDecoder(ServerManager serverManager, String protocol) {
super(serverManager, protocol);
}
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, SocketAddress remoteAddress, 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, remoteAddress);
}
else if (type == MSG_UPLOAD_POSITION ||
type == MSG_CONTROL_RESPONSE ||
type == MSG_ALARM) {
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
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_OF_DAY, (int) (timeValue >> 12 & 0x1f));
time.set(Calendar.MINUTE, (int) (timeValue >> 6 & 0x3f));
time.set(Calendar.SECOND, (int) (timeValue & 0x3f));
position.setTime(time.getTime());
// Identification
ChannelBuffer rawId = buf.readBytes(11);
int index = 0;
while (rawId.readable() && rawId.readByte() != 0) {
index += 1;
}
String id = rawId.toString(0, index, Charset.defaultCharset());
try {
position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
} catch(Exception error) {
Log.warning("Unknown device - " + id);
return null;
}
// IO status
extendedInfo.set("io", buf.readUnsignedByte());
// Fuel
extendedInfo.set("fuel", buf.readUnsignedByte());
position.setExtendedInfo(extendedInfo.toString());
return position;
}
return null;
}
}
|
