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
|
/*
* 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.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
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 SyrusProtocolDecoder extends BaseProtocolDecoder {
boolean sendResponse;
public SyrusProtocolDecoder(ServerManager serverManager, boolean sendResponse) {
super(serverManager);
this.sendResponse = sendResponse;
}
private static final Pattern pattern = Pattern.compile(
"R[EP]V" + // Type
"(?:\\d{2}" + // Event index
"(\\d{4})" + // Week
"(\\d))?" + // Day
"(\\d{5})" + // Seconds
"([\\+\\-]\\d{2})(\\d{5})" + // Latitude
"([\\+\\-]\\d{3})(\\d{5})" + // Longitude
"(\\d{3})" + // Speed
"(\\d{3})" + // Course
"\\d" + // Fix mode
"(\\d)" + // Fix age
".*");
private Date getTime(long week, long day, long seconds) {
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, 1980);
time.set(Calendar.MONTH, 0);
time.set(Calendar.DAY_OF_MONTH, 6);
long millis = time.getTimeInMillis();
millis += ((week * 7 + day) * 24 * 60 * 60 + seconds) * 1000;
return new Date(millis);
}
private Date getTime(long seconds) {
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.set(Calendar.HOUR, 0);
time.set(Calendar.MINUTE, 0);
time.set(Calendar.SECOND, 0);
time.set(Calendar.MILLISECOND, 0);
long millis = time.getTimeInMillis() + seconds * 1000;
long diff = new Date().getTime() - millis;
if (diff > 12 * 60 * 60 * 1000) {
millis += 24 * 60 * 60 * 1000;
}
return new Date(millis);
}
@Override
protected Object decode(
ChannelHandlerContext ctx, Channel channel, Object msg)
throws Exception {
String sentence = (String) msg;
// Find message start
int beginIndex = sentence.indexOf('>');
if (beginIndex != -1) {
sentence = sentence.substring(beginIndex + 1);
}
// Find device ID
Long deviceId = null;
beginIndex = sentence.indexOf(";ID=");
if (beginIndex != -1) {
beginIndex += 4;
int endIndex = sentence.indexOf(';', beginIndex);
if (endIndex == -1) {
endIndex = sentence.length();
}
// Find device in database
String id = sentence.substring(beginIndex, endIndex);
try {
deviceId = getDataManager().getDeviceByImei(id).getId();
} catch(Exception error) {
Log.warning("Unknown device - " + id);
return null;
}
// Send response
if (sendResponse && channel != null) {
channel.write(id);
}
} else {
return null;
}
// Parse message
Matcher parser = pattern.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("syrus");
position.setDeviceId(deviceId);
Integer index = 1;
// Time
String week = parser.group(index++);
String day = parser.group(index++);
int seconds = Integer.valueOf(parser.group(index++));
if (week != null && day != null) {
position.setTime(getTime(Integer.valueOf(week), Integer.valueOf(day), seconds));
} else {
position.setTime(getTime(seconds));
}
// Latitude
String latitude = parser.group(index) + '.' + parser.group(index + 1);
index += 2;
position.setLatitude(Double.valueOf(latitude));
// Latitude
String longitude = parser.group(index) + '.' + parser.group(index + 1);
index += 2;
position.setLongitude(Double.valueOf(longitude));
// Altitude
position.setAltitude(0.0);
// Speed and Course
position.setSpeed(Double.valueOf(parser.group(index++)) * 0.868976);
position.setCourse(Double.valueOf(parser.group(index++)));
// Validity
position.setValid(Integer.valueOf(parser.group(index++)) == 2);
position.setExtendedInfo(extendedInfo.toString());
return position;
}
}
|
