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
|
/*
* Copyright 2014 - 2016 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 org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.helper.BitUtil;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.Date;
public class EelinkProtocolDecoder extends BaseProtocolDecoder {
public EelinkProtocolDecoder(EelinkProtocol protocol) {
super(protocol);
}
public static final int MSG_LOGIN = 0x01;
public static final int MSG_GPS = 0x02;
public static final int MSG_HEARTBEAT = 0x03;
public static final int MSG_ALARM = 0x04;
public static final int MSG_STATE = 0x05;
public static final int MSG_SMS = 0x06;
public static final int MSG_OBD = 0x07;
public static final int MSG_INTERACTIVE = 0x80;
public static final int MSG_DATA = 0x81;
public static final int MSG_NORMAL = 0x12;
public static final int MSG_WARNING = 0x14;
public static final int MSG_REPORT = 0x15;
public static final int MSG_COMMAND = 0x16;
public static final int MSG_OBD_DATA = 0x17;
public static final int MSG_OBD_BODY = 0x18;
public static final int MSG_OBD_CODE = 0x19;
public static final int MSG_CAMERA_INFO = 0x1E;
public static final int MSG_CAMERA_DATA = 0x1F;
private void sendResponse(Channel channel, int type, int index) {
if (channel != null) {
ChannelBuffer response = ChannelBuffers.buffer(7);
response.writeByte(0x67); response.writeByte(0x67); // header
response.writeByte(type);
response.writeShort(2); // length
response.writeShort(index);
channel.write(response);
}
}
private Position decodeOld(ChannelBuffer buf, int type, int index) {
Position position = new Position();
position.setDeviceId(getDeviceId());
position.setProtocol(getProtocolName());
position.set(Position.KEY_INDEX, index);
position.setTime(new Date(buf.readUnsignedInt() * 1000));
position.setLatitude(buf.readInt() / 1800000.0);
position.setLongitude(buf.readInt() / 1800000.0);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
position.setCourse(buf.readUnsignedShort());
position.set(Position.KEY_MCC, buf.readUnsignedShort());
position.set(Position.KEY_MNC, buf.readUnsignedShort());
position.set(Position.KEY_LAC, buf.readUnsignedShort());
position.set(Position.KEY_CID, buf.readUnsignedMedium());
position.setValid((buf.readUnsignedByte() & 0x01) != 0);
if (type == MSG_ALARM) {
position.set(Position.KEY_ALARM, buf.readUnsignedByte());
}
if (type == MSG_STATE) {
position.set(Position.KEY_STATUS, buf.readUnsignedByte());
}
return position;
}
private Position decodeNew(ChannelBuffer buf, int type, int index) {
Position position = new Position();
position.setDeviceId(getDeviceId());
position.setProtocol(getProtocolName());
position.set(Position.KEY_INDEX, index);
position.setTime(new Date(buf.readUnsignedInt() * 1000));
int flags = buf.readUnsignedByte();
if (BitUtil.check(flags, 0)) {
position.setLatitude(buf.readInt() / 1800000.0);
position.setLongitude(buf.readInt() / 1800000.0);
position.setAltitude(buf.readShort());
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
position.setCourse(buf.readUnsignedShort());
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
}
if (BitUtil.check(flags, 1)) {
position.set(Position.KEY_MCC, buf.readUnsignedShort());
position.set(Position.KEY_MNC, buf.readUnsignedShort());
position.set(Position.KEY_LAC, buf.readUnsignedShort());
position.set(Position.KEY_CID, buf.readUnsignedInt());
position.set(Position.KEY_GSM, buf.readUnsignedByte());
}
if (BitUtil.check(flags, 2)) {
buf.skipBytes(7); // bsid1
}
if (BitUtil.check(flags, 3)) {
buf.skipBytes(7); // bsid2
}
if (BitUtil.check(flags, 4)) {
buf.skipBytes(7); // bss0
}
if (BitUtil.check(flags, 5)) {
buf.skipBytes(7); // bss1
}
if (BitUtil.check(flags, 6)) {
buf.skipBytes(7); // bss2
}
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(2); // header
int type = buf.readUnsignedByte();
buf.readShort(); // length
int index = buf.readUnsignedShort();
if (type != MSG_GPS && type != MSG_DATA) {
sendResponse(channel, type, index);
}
if (type == MSG_LOGIN) {
identify(ChannelBuffers.hexDump(buf.readBytes(8)).substring(1), channel, remoteAddress);
} else if (hasDeviceId()) {
if (type == MSG_GPS || type == MSG_ALARM || type == MSG_STATE || type == MSG_SMS) {
return decodeOld(buf, type, index);
} else if (type >= MSG_NORMAL && type <= MSG_OBD_CODE) {
return decodeNew(buf, type, index);
}
}
return null;
}
}
|
