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/*
* Copyright 2012 - 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.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class UproProtocolDecoder extends BaseProtocolDecoder {
public UproProtocolDecoder(UproProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("*")
.expression("..20")
.expression("[01]") // ack
.number("(d+),") // device id
.expression(".") // type
.expression(".") // subtype
.expression("(.*)") // content
.expression("#?") // delimiter
.compile();
private static final Pattern PATTERN_LOCATION = new PatternBuilder()
.text("A")
.number("(dd)(dd)(dd)") // time
.number("(dd)(dd)(dddd)") // latitude
.number("(ddd)(dd)(dddd)") // longitude
.number("(d)") // flags
.number("(dd)") // speed
.number("(dd)") // course
.number("(dd)(dd)(dd)") // date
.compile();
private void decodeLocation(Position position, String data) {
Parser parser = new Parser(PATTERN_LOCATION, data);
if (parser.matches()) {
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setValid(true);
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_MIN_MIN));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_MIN_MIN));
int flags = parser.nextInt();
position.setValid(BitUtil.check(flags, 0));
if (!BitUtil.check(flags, 1)) {
position.setLatitude(-position.getLatitude());
}
if (!BitUtil.check(flags, 2)) {
position.setLongitude(-position.getLongitude());
}
position.setSpeed(parser.nextInt() * 2);
position.setCourse(parser.nextInt() * 10);
dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
String[] data = parser.next().split("&");
for (int i = 0; i < data.length; i++) {
if (i != 0) {
switch (data[i].charAt(0)) {
case 'A':
decodeLocation(position, data[i]);
break;
case 'B':
position.set(Position.KEY_STATUS, data[i].substring(1));
break;
case 'P':
position.set(Position.KEY_MCC, Integer.parseInt(data[i].substring(1, 5)));
position.set(Position.KEY_MNC, Integer.parseInt(data[i].substring(5, 9)));
position.set(Position.KEY_LAC, Integer.parseInt(data[i].substring(9, 13), 16));
position.set(Position.KEY_CID, Integer.parseInt(data[i].substring(13, 17), 16));
break;
default:
break;
}
}
}
if (position.getLatitude() != 0 && position.getLongitude() != 0) {
return position;
}
return null;
}
}
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