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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* Copyright 2014 - 2016 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 org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
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_DOWNLINK = 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 String decodeAlarm(Short value) {
switch (value) {
case 0x01:
return Position.ALARM_POWER_OFF;
case 0x02:
return Position.ALARM_SOS;
case 0x03:
return Position.ALARM_LOW_BATTERY;
case 0x04:
return Position.ALARM_VIBRATION;
case 0x08:
case 0x09:
return Position.ALARM_GPS_ANTENNA_CUT;
case 0x81:
return Position.ALARM_LOW_SPEED;
case 0x82:
return Position.ALARM_OVERSPEED;
case 0x83:
return Position.ALARM_GEOFENCE_ENTER;
case 0x84:
return Position.ALARM_GEOFENCE_EXIT;
case 0x85:
return Position.ALARM_ACCIDENT;
case 0x86:
return Position.ALARM_FALL_DOWN;
default:
return null;
}
}
private Position decodeOld(DeviceSession deviceSession, ChannelBuffer buf, int type, int index) {
Position position = new Position();
position.setDeviceId(deviceSession.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.setNetwork(new Network(CellTower.from(
buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedShort(), 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, decodeAlarm(buf.readUnsignedByte()));
}
return position;
}
private Position decodeNew(DeviceSession deviceSession, ChannelBuffer buf, int index) {
Position position = new Position();
position.setDeviceId(deviceSession.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.setNetwork(new Network(CellTower.from(
buf.readUnsignedShort(), buf.readUnsignedShort(),
buf.readUnsignedShort(), buf.readUnsignedInt(), 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) {
getDeviceSession(channel, remoteAddress, ChannelBuffers.hexDump(buf.readBytes(8)).substring(1));
} else {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
if (type == MSG_GPS || type == MSG_ALARM || type == MSG_STATE || type == MSG_SMS) {
return decodeOld(deviceSession, buf, type, index);
} else if (type >= MSG_NORMAL && type <= MSG_OBD_CODE) {
return decodeNew(deviceSession, buf, index);
}
}
return null;
}
}
|
