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/*
* Copyright 2016 - 2019 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 io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.Context;
import org.traccar.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
import org.traccar.helper.Checksum;
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 java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.regex.Pattern;
public class FifotrackProtocolDecoder extends BaseProtocolDecoder {
private ByteBuf photo;
public FifotrackProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("$$")
.number("d+,") // length
.number("(d+),") // imei
.number("x+,") // index
.expression("[^,]+,") // type
.number("(d+)?,") // alarm
.number("(dd)(dd)(dd)") // date (yymmdd)
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("([AV]),") // validity
.number("(-?d+.d+),") // latitude
.number("(-?d+.d+),") // longitude
.number("(d+),") // speed
.number("(d+),") // course
.number("(-?d+),") // altitude
.number("(d+),") // odometer
.number("d+,") // runtime
.number("(x{4,8}),") // status
.number("(x+)?,") // input
.number("(x+)?,") // output
.number("(d+)|") // mcc
.number("(d+)|") // mnc
.number("(x+)|") // lac
.number("(x+),") // cid
.number("([x|]+)") // adc
.expression(",([^,]+)") // rfid
.expression(",([^*]*)").optional(2) // sensors
.any()
.compile();
private static final Pattern PATTERN_PHOTO = new PatternBuilder()
.text("$$")
.number("d+,") // length
.number("(d+),") // imei
.any()
.number(",(d+),") // length
.expression("([^*]+)") // photo id
.text("*")
.number("xx")
.compile();
private static final Pattern PATTERN_PHOTO_DATA = new PatternBuilder()
.text("$$")
.number("d+,") // length
.number("(d+),") // imei
.number("x+,") // index
.expression("[^,]+,") // type
.expression("([^,]+),") // photo id
.number("(d+),") // offset
.number("(d+),") // size
.compile();
private void requestPhoto(Channel channel, SocketAddress socketAddress, String imei, String file) {
if (channel != null) {
String content = "1,D06," + file + "," + photo.writerIndex() + "," + Math.min(1024, photo.writableBytes());
int length = 1 + imei.length() + 1 + content.length();
String response = String.format("##%02d,%s,%s*", length, imei, content);
response += Checksum.sum(response) + "\r\n";
channel.writeAndFlush(new NetworkMessage(response, socketAddress));
}
}
private String decodeAlarm(Integer alarm) {
if (alarm != null) {
switch (alarm) {
case 2:
return Position.ALARM_SOS;
case 14:
return Position.ALARM_LOW_POWER;
case 15:
return Position.ALARM_POWER_CUT;
case 16:
return Position.ALARM_POWER_RESTORED;
default:
return null;
}
}
return null;
}
private Object decodeLocation(
Channel channel, SocketAddress remoteAddress, String sentence) {
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_ALARM, decodeAlarm(parser.nextInt()));
position.setTime(parser.nextDateTime());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt()));
position.setCourse(parser.nextInt());
position.setAltitude(parser.nextInt());
position.set(Position.KEY_ODOMETER, parser.nextLong());
position.set(Position.KEY_STATUS, parser.nextHexLong());
position.set(Position.KEY_INPUT, parser.nextHexInt());
position.set(Position.KEY_OUTPUT, parser.nextHexInt());
position.setNetwork(new Network(CellTower.from(
parser.nextInt(), parser.nextInt(), parser.nextHexInt(), parser.nextHexInt())));
String[] adc = parser.next().split("\\|");
for (int i = 0; i < adc.length; i++) {
position.set(Position.PREFIX_ADC + (i + 1), Integer.parseInt(adc[i], 16));
}
if (parser.hasNext()) {
position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(parser.nextHexInt()));
}
if (parser.hasNext()) {
String[] sensors = parser.next().split("\\|");
for (int i = 0; i < sensors.length; i++) {
position.set(Position.PREFIX_IO + (i + 1), sensors[i]);
}
}
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
int typeIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',') + 1;
typeIndex = buf.indexOf(typeIndex, buf.writerIndex(), (byte) ',') + 1;
typeIndex = buf.indexOf(typeIndex, buf.writerIndex(), (byte) ',') + 1;
String type = buf.toString(typeIndex, 3, StandardCharsets.US_ASCII);
if (type.equals("D05")) {
String sentence = buf.toString(StandardCharsets.US_ASCII);
Parser parser = new Parser(PATTERN_PHOTO, sentence);
if (parser.matches()) {
String imei = parser.next();
int length = parser.nextInt();
String photoId = parser.next();
photo = Unpooled.buffer(length);
requestPhoto(channel, remoteAddress, imei, photoId);
}
} else if (type.equals("D06")) {
if (photo == null) {
return null;
}
int dataIndex = buf.indexOf(typeIndex + 4, buf.writerIndex(), (byte) ',') + 1;
dataIndex = buf.indexOf(dataIndex, buf.writerIndex(), (byte) ',') + 1;
dataIndex = buf.indexOf(dataIndex, buf.writerIndex(), (byte) ',') + 1;
String sentence = buf.toString(buf.readerIndex(), dataIndex, StandardCharsets.US_ASCII);
Parser parser = new Parser(PATTERN_PHOTO_DATA, sentence);
if (parser.matches()) {
String imei = parser.next();
String photoId = parser.next();
parser.nextInt(); // offset
parser.nextInt(); // size
buf.readerIndex(dataIndex);
buf.readBytes(photo, buf.readableBytes() - 3); // ignore checksum
if (photo.isWritable()) {
requestPhoto(channel, remoteAddress, imei, photoId);
} else {
Position position = new Position(getProtocolName());
position.setDeviceId(getDeviceSession(channel, remoteAddress, imei).getDeviceId());
getLastLocation(position, null);
position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(imei, photo, "jpg"));
photo.release();
photo = null;
return position;
}
}
} else {
String sentence = buf.toString(StandardCharsets.US_ASCII);
return decodeLocation(channel, remoteAddress, sentence);
}
return null;
}
}
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