/*
* Copyright 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.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.regex.Pattern;
public class L100ProtocolDecoder extends BaseProtocolDecoder {
public L100ProtocolDecoder(L100Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("ATL")
.number("(d{15}),") // imei
.text("$GPRMC,")
.number("(dd)(dd)(dd)") // time (hhmmss.sss)
.number(".(ddd)").optional()
.expression(",([AV]),") // validity
.number("(dd)(dd.d+),") // latitude
.expression("([NS]),")
.number("(ddd)(dd.d+),") // longitude
.expression("([EW]),")
.number("(d+.?d*)?,") // speed
.number("(d+.?d*)?,") // course
.number("(dd)(dd)(dd),") // date (ddmmyy)
.any()
.text("#")
.number("([01]+),") // io status
.number("(d+.?d*|N.C),") // adc
.expression("[^,]*,") // reserved
.expression("[^,]*,") // reserved
.number("(d+.d+),") // odometer
.number("(d+.d+),") // temperature
.number("(d+.d+),") // battery
.number("(d+),") // gsm
.number("(d+),") // mcc
.number("(d+),") // mnc
.number("(x+),") // lac
.number("(x+)") // cid
.text("ATL")
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.readUnsignedByte(); // start marker
buf.readUnsignedByte(); // type
String sentence = buf.readBytes(buf.readableBytes() - 2).toString(StandardCharsets.US_ASCII);
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble(0));
position.setCourse(parser.nextDouble(0));
dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setTime(dateBuilder.getDate());
position.set(Position.KEY_STATUS, parser.next());
position.set(Position.PREFIX_ADC + 1, parser.next());
position.set(Position.KEY_ODOMETER, parser.nextDouble(0));
position.set(Position.PREFIX_TEMP + 1, parser.nextDouble(0));
position.set(Position.KEY_BATTERY, parser.nextDouble(0));
int rssi = parser.nextInt(0);
position.setNetwork(new Network(CellTower.from(
parser.nextInt(0), parser.nextInt(0), parser.nextHexInt(0), parser.nextHexInt(0), rssi)));
return position;
}
}