diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/WristbandProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/WristbandProtocolDecoder.java | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/WristbandProtocolDecoder.java b/src/main/java/org/traccar/protocol/WristbandProtocolDecoder.java new file mode 100644 index 000000000..7f2b0af85 --- /dev/null +++ b/src/main/java/org/traccar/protocol/WristbandProtocolDecoder.java @@ -0,0 +1,207 @@ +/* + * Copyright 2018 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.DeviceSession; +import org.traccar.NetworkMessage; +import org.traccar.Protocol; +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.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Date; +import java.util.LinkedList; +import java.util.List; +import java.util.regex.Pattern; + +public class WristbandProtocolDecoder extends BaseProtocolDecoder { + + public WristbandProtocolDecoder(Protocol protocol) { + super(protocol); + } + + private void sendResponse( + Channel channel, String imei, String version, int type, String data) { + + if (channel != null) { + String sentence = String.format("YX%s|%s|0|{F%02d#%s}\r\n", imei, version, type, data); + ByteBuf response = Unpooled.buffer(); + if (type != 91) { + response.writeBytes(new byte[]{0x00, 0x01, 0x02}); + response.writeShort(sentence.length()); + } + response.writeCharSequence(sentence, StandardCharsets.US_ASCII); + if (type != 91) { + response.writeBytes(new byte[]{(byte) 0xFF, (byte) 0xFE, (byte) 0xFC}); + } + channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress())); + } + } + + private static final Pattern PATTERN = new PatternBuilder() + .expression("..") // header + .number("(d+)|") // imei + .number("([vV]d+.d+)|") // version + .number("d+|") // model + .text("{") + .number("F(d+)") // function + .groupBegin() + .text("#") + .expression("(.*)") // data + .groupEnd("?") + .text("}") + .text("\r\n") + .compile(); + + private Position decodePosition(DeviceSession deviceSession, String sentence) throws ParseException { + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + String[] values = sentence.split(","); + + position.setValid(true); + position.setLongitude(Double.parseDouble(values[0])); + position.setLatitude(Double.parseDouble(values[1])); + position.setTime(new SimpleDateFormat("yyyyMMddHHmm").parse(values[2])); + position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(values[3]))); + + return position; + } + + private Position decodeStatus(DeviceSession deviceSession, String sentence) { + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + getLastLocation(position, null); + + position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(sentence.split(",")[0])); + + return position; + } + + private Position decodeNetwork(DeviceSession deviceSession, String sentence, boolean wifi) { + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + getLastLocation(position, null); + + Network network = new Network(); + String[] fragments = sentence.split("\\|"); + + if (wifi) { + for (String item : fragments[0].split("_")) { + String[] values = item.split(","); + network.addWifiAccessPoint(WifiAccessPoint.from(values[0], Integer.parseInt(values[1]))); + } + } + + for (String item : fragments[wifi ? 1 : 0].split(":")) { + String[] values = item.split(","); + int lac = Integer.parseInt(values[0]); + int mnc = Integer.parseInt(values[1]); + int mcc = Integer.parseInt(values[2]); + int cid = Integer.parseInt(values[3]); + int rssi = Integer.parseInt(values[4]); + network.addCellTower(CellTower.from(mcc, mnc, lac, cid, rssi)); + } + + position.setNetwork(network); + + return position; + } + + private List<Position> decodeMessage( + Channel channel, SocketAddress remoteAddress, String sentence) throws ParseException { + + Parser parser = new Parser(PATTERN, sentence); + if (!parser.matches()) { + return null; + } + + String imei = parser.next(); + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); + if (deviceSession == null) { + return null; + } + + String version = parser.next(); + int type = parser.nextInt(); + + List<Position> positions = new LinkedList<>(); + String data = parser.next(); + + switch (type) { + case 90: + sendResponse(channel, imei, version, type, getServer(channel, ',')); + break; + case 91: + String time = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()); + sendResponse(channel, imei, version, type, time + "|" + getServer(channel, ',')); + break; + case 1: + positions.add(decodeStatus(deviceSession, data)); + sendResponse(channel, imei, version, type, data.split(",")[1]); + break; + case 2: + for (String fragment : data.split("\\|")) { + positions.add(decodePosition(deviceSession, fragment)); + } + break; + case 3: + case 4: + positions.add(decodeNetwork(deviceSession, data, type == 3)); + break; + case 64: + sendResponse(channel, imei, version, type, data); + break; + default: + break; + } + + return positions.isEmpty() ? null : positions; + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + buf.skipBytes(3); // header + buf.readUnsignedShort(); // length + + String sentence = buf.toString(buf.readerIndex(), buf.readableBytes() - 3, StandardCharsets.US_ASCII); + + buf.skipBytes(3); // footer + + return decodeMessage(channel, remoteAddress, sentence); + } + +} |