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
|
/*
* Copyright 2015 - 2019 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 org.traccar.BaseProtocolEncoder;
import org.traccar.Context;
import org.traccar.helper.Checksum;
import org.traccar.model.Command;
import org.traccar.Protocol;
import java.nio.charset.StandardCharsets;
public class Gt06ProtocolEncoder extends BaseProtocolEncoder {
public Gt06ProtocolEncoder(Protocol protocol) {
super(protocol);
}
private ByteBuf encodeContent(long deviceId, String content) {
boolean language = Context.getIdentityManager()
.lookupAttributeBoolean(deviceId, getProtocolName() + ".language", false, false, true);
ByteBuf buf = Unpooled.buffer();
buf.writeByte(0x78);
buf.writeByte(0x78);
buf.writeByte(1 + 1 + 4 + content.length() + 2 + 2 + (language ? 2 : 0)); // message length
buf.writeByte(0x80); // message type
buf.writeByte(4 + content.length()); // command length
buf.writeInt(0);
buf.writeBytes(content.getBytes(StandardCharsets.US_ASCII)); // command
if (language) {
buf.writeShort(2); // english language
}
buf.writeShort(0); // message index
buf.writeShort(Checksum.crc16(Checksum.CRC16_X25, buf.nioBuffer(2, buf.writerIndex() - 2)));
buf.writeByte('\r');
buf.writeByte('\n');
return buf;
}
@Override
protected Object encodeCommand(Command command) {
boolean alternative = Context.getIdentityManager().lookupAttributeBoolean(
command.getDeviceId(), getProtocolName() + ".alternative", false, false, true);
initDevicePassword(command, "123456");
switch (command.getType()) {
case Command.TYPE_ENGINE_STOP:
return encodeContent(command.getDeviceId(),
alternative ? "DYD," + Command.KEY_DEVICE_PASSWORD + "#" : "Relay,1#");
case Command.TYPE_ENGINE_RESUME:
return encodeContent(command.getDeviceId(),
alternative ? "HFYD," + Command.KEY_DEVICE_PASSWORD + "#" : "Relay,0#");
case Command.TYPE_CUSTOM:
return encodeContent(command.getDeviceId(), command.getString(Command.KEY_DATA));
default:
return null;
}
}
}
|
