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/*
* Copyright 2015 - 2017 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.Context;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import org.traccar.model.WifiAccessPoint;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.regex.Pattern;
public class WatchProtocolDecoder extends BaseProtocolDecoder {
public WatchProtocolDecoder(WatchProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN_POSITION = new PatternBuilder()
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time (hhmmss)
.expression("([AV]),") // validity
.number(" *(-?d+.d+),") // latitude
.expression("([NS]),")
.number(" *(-?d+.d+),") // longitude
.expression("([EW])?,")
.number("(d+.d+),") // speed
.number("(d+.?d*),") // course
.number("(d+.?d*),") // altitude
.number("(d+),") // satellites
.number("(d+),") // rssi
.number("(d+),") // battery
.number("(d+),") // steps
.number("d+,") // tumbles
.number("(x+),") // status
.expression("(.*)") // cell and wifi
.compile();
private void sendResponse(Channel channel, String manufacturer, String id, String content) {
if (channel != null) {
channel.write(String.format(
"[%s*%s*%04x*%s]", manufacturer, id, content.length(), content));
}
}
private String decodeAlarm(int status) {
if (BitUtil.check(status, 0)) {
return Position.ALARM_LOW_BATTERY;
} else if (BitUtil.check(status, 1)) {
return Position.ALARM_GEOFENCE_EXIT;
} else if (BitUtil.check(status, 2)) {
return Position.ALARM_GEOFENCE_ENTER;
} else if (BitUtil.check(status, 3)) {
return Position.ALARM_OVERSPEED;
} else if (BitUtil.check(status, 16)) {
return Position.ALARM_SOS;
} else if (BitUtil.check(status, 17)) {
return Position.ALARM_LOW_BATTERY;
} else if (BitUtil.check(status, 18)) {
return Position.ALARM_GEOFENCE_EXIT;
} else if (BitUtil.check(status, 19)) {
return Position.ALARM_GEOFENCE_ENTER;
} else if (BitUtil.check(status, 20)) {
return Position.ALARM_REMOVING;
} else if (BitUtil.check(status, 21)) {
return Position.ALARM_FALL_DOWN;
}
return null;
}
private void decodeTail(Position position, String data) {
String[] values = data.split(",");
int index = 0;
Network network = new Network();
int cellCount = Integer.parseInt(values[index++]);
index += 1; // timing advance
int mcc = Integer.parseInt(values[index++]);
int mnc = Integer.parseInt(values[index++]);
for (int i = 0; i < cellCount; i++) {
network.addCellTower(CellTower.from(mcc, mnc,
Integer.parseInt(values[index++]), Integer.parseInt(values[index++]),
Integer.parseInt(values[index++])));
}
if (index < values.length && !values[index].isEmpty()) {
int wifiCount = Integer.parseInt(values[index++]);
for (int i = 0; i < wifiCount; i++) {
index += 1; // wifi name
network.addWifiAccessPoint(WifiAccessPoint.from(
values[index++], Integer.parseInt(values[index++])));
}
}
if (network.getCellTowers() != null || network.getWifiAccessPoints() != null) {
position.setNetwork(network);
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(1); // header
String manufacturer = buf.readBytes(2).toString(StandardCharsets.US_ASCII);
buf.skipBytes(1); // delimiter
String id = buf.readBytes(10).toString(StandardCharsets.US_ASCII);
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
if (deviceSession == null) {
return null;
}
buf.skipBytes(1); // delimiter
buf.skipBytes(4); // length
buf.skipBytes(1); // delimiter
buf.writerIndex(buf.writerIndex() - 1); // ignore ending
int contentIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
if (contentIndex < 0) {
contentIndex = buf.writerIndex();
}
String type = buf.readBytes(contentIndex - buf.readerIndex()).toString(StandardCharsets.US_ASCII);
if (contentIndex < buf.writerIndex()) {
buf.readerIndex(contentIndex + 1);
}
if (type.equals("LK")) {
sendResponse(channel, manufacturer, id, "LK");
if (buf.readable()) {
String[] values = buf.toString(StandardCharsets.US_ASCII).split(",");
if (values.length >= 3) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, null);
position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(values[2]));
return position;
}
}
} else if (type.equals("UD") || type.equals("UD2") || type.equals("UD3")
|| type.equals("AL") || type.equals("WT")) {
if (type.equals("AL")) {
sendResponse(channel, manufacturer, id, "AL");
}
Parser parser = new Parser(PATTERN_POSITION, buf.toString(StandardCharsets.US_ASCII));
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.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
position.setCourse(parser.nextDouble(0));
position.setAltitude(parser.nextDouble(0));
position.set(Position.KEY_SATELLITES, parser.nextInt(0));
position.set(Position.KEY_RSSI, parser.nextInt(0));
position.set(Position.KEY_BATTERY_LEVEL, parser.nextInt(0));
position.set("steps", parser.nextInt(0));
int status = parser.nextHexInt(0);
position.set(Position.KEY_ALARM, decodeAlarm(status));
if (BitUtil.check(status, 4)) {
position.set(Position.KEY_MOTION, true);
}
decodeTail(position, parser.next());
return position;
} else if (type.equals("TKQ")) {
sendResponse(channel, manufacturer, id, "TKQ");
} else if (type.equals("PULSE") || type.equals("heart")) {
if (buf.readable()) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, new Date());
position.setValid(false);
String pulse = buf.toString(StandardCharsets.US_ASCII);
position.set("pulse", pulse);
position.set(Position.KEY_RESULT, pulse);
return position;
}
} else if (type.equals("img")) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, null);
int timeIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
buf.readerIndex(timeIndex + 12 + 2);
position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(id, buf, "jpg"));
return position;
} else if (type.equals("TK")) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, null);
position.set(Position.KEY_AUDIO, Context.getMediaManager().writeFile(id, buf, "amr"));
return position;
}
return null;
}
}
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