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/*
* Copyright 2013 - 2014 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.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class WialonProtocolDecoder extends BaseProtocolDecoder {
public WialonProtocolDecoder(WialonProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.number("(dd)(dd)(dd);") // date (ddmmyy)
.number("(dd)(dd)(dd);") // time (hhmmss)
.number("(dd)(dd.d+);") // latitude
.expression("([NS]);")
.number("(ddd)(dd.d+);") // longitude
.expression("([EW]);")
.number("(d+.?d*)?;") // speed
.number("(d+.?d*)?;") // course
.number("(?:NA|(d+.?d*));") // altitude
.number("(?:NA|(d+))") // satellites
.groupBegin().text(";")
.number("(?:NA|(d+.?d*));") // hdop
.number("(?:NA|(d+));") // inputs
.number("(?:NA|(d+));") // outputs
.expression("(?:NA|([^;]*));") // adc
.expression("(?:NA|([^;]*));") // ibutton
.expression("(?:NA|(.*))") // params
.groupEnd("?")
.compile();
private void sendResponse(Channel channel, String prefix, Integer number) {
if (channel != null) {
StringBuilder response = new StringBuilder(prefix);
if (number != null) {
response.append(number);
}
response.append("\r\n");
channel.write(response.toString());
}
}
private Position decodePosition(Channel channel, SocketAddress remoteAddress, String substring) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
Parser parser = new Parser(PATTERN, substring);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
position.setCourse(parser.nextDouble(0));
position.setAltitude(parser.nextDouble(0));
if (parser.hasNext()) {
int satellites = parser.nextInt(0);
position.setValid(satellites >= 3);
position.set(Position.KEY_SATELLITES, satellites);
}
position.set(Position.KEY_HDOP, parser.next());
position.set(Position.KEY_INPUT, parser.next());
position.set(Position.KEY_OUTPUT, parser.next());
if (parser.hasNext()) {
String[] values = parser.next().split(",");
for (int i = 0; i < values.length; i++) {
position.set(Position.PREFIX_ADC + (i + 1), values[i]);
}
}
position.set(Position.KEY_RFID, parser.next());
if (parser.hasNext()) {
String[] values = parser.next().split(",");
for (String param : values) {
Matcher paramParser = Pattern.compile("(.*):[1-3]:(.*)").matcher(param);
if (paramParser.matches()) {
try {
position.set(paramParser.group(1).toLowerCase(), Double.parseDouble(paramParser.group(2)));
} catch (NumberFormatException e) {
position.set(paramParser.group(1).toLowerCase(), paramParser.group(2));
}
}
}
}
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.startsWith("#L#")) {
String imei = sentence.substring(3, sentence.indexOf(';'));
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
if (deviceSession != null) {
sendResponse(channel, "#AL#", 1);
}
} else if (sentence.startsWith("#P#")) {
sendResponse(channel, "#AP#", null); // heartbeat
} else if (sentence.startsWith("#SD#") || sentence.startsWith("#D#")) {
Position position = decodePosition(
channel, remoteAddress, sentence.substring(sentence.indexOf('#', 1) + 1));
if (position != null) {
sendResponse(channel, "#AD#", 1);
return position;
}
} else if (sentence.startsWith("#B#")) {
String[] messages = sentence.substring(sentence.indexOf('#', 1) + 1).split("\\|");
List<Position> positions = new LinkedList<>();
for (String message : messages) {
Position position = decodePosition(channel, remoteAddress, message);
if (position != null) {
positions.add(position);
}
}
sendResponse(channel, "#AB#", messages.length);
if (!positions.isEmpty()) {
return positions;
}
} else if (sentence.startsWith("#M#")) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession != null) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, new Date());
position.setValid(false);
position.set(Position.KEY_RESULT, sentence.substring(sentence.indexOf('#', 1) + 1));
sendResponse(channel, "#AM#", 1);
return position;
}
}
return null;
}
}
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