From ac60477392048413d97a6d54a4456647aaaf7d22 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Sun, 26 Mar 2023 09:55:07 -0700 Subject: Implement VLT protocol --- .../java/org/traccar/protocol/VltProtocol.java | 43 +++++++ .../org/traccar/protocol/VltProtocolDecoder.java | 137 +++++++++++++++++++++ 2 files changed, 180 insertions(+) create mode 100644 src/main/java/org/traccar/protocol/VltProtocol.java create mode 100644 src/main/java/org/traccar/protocol/VltProtocolDecoder.java (limited to 'src/main/java/org/traccar/protocol') diff --git a/src/main/java/org/traccar/protocol/VltProtocol.java b/src/main/java/org/traccar/protocol/VltProtocol.java new file mode 100644 index 000000000..ebced83b1 --- /dev/null +++ b/src/main/java/org/traccar/protocol/VltProtocol.java @@ -0,0 +1,43 @@ +/* + * Copyright 2023 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.handler.codec.http.HttpObjectAggregator; +import io.netty.handler.codec.http.HttpRequestDecoder; +import io.netty.handler.codec.http.HttpResponseEncoder; +import org.traccar.BaseProtocol; +import org.traccar.PipelineBuilder; +import org.traccar.TrackerServer; +import org.traccar.config.Config; + +import javax.inject.Inject; + +public class VltProtocol extends BaseProtocol { + + @Inject + public VltProtocol(Config config) { + addServer(new TrackerServer(config, getName(), false) { + @Override + protected void addProtocolHandlers(PipelineBuilder pipeline, Config config) { + pipeline.addLast(new HttpResponseEncoder()); + pipeline.addLast(new HttpRequestDecoder()); + pipeline.addLast(new HttpObjectAggregator(65535)); + pipeline.addLast(new VltProtocolDecoder(VltProtocol.this)); + } + }); + } + +} diff --git a/src/main/java/org/traccar/protocol/VltProtocolDecoder.java b/src/main/java/org/traccar/protocol/VltProtocolDecoder.java new file mode 100644 index 000000000..8890dece1 --- /dev/null +++ b/src/main/java/org/traccar/protocol/VltProtocolDecoder.java @@ -0,0 +1,137 @@ +/* + * Copyright 2023 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.channel.Channel; +import io.netty.handler.codec.http.FullHttpRequest; +import io.netty.handler.codec.http.HttpResponseStatus; +import io.netty.handler.codec.http.QueryStringDecoder; +import org.traccar.BaseHttpProtocolDecoder; +import org.traccar.Protocol; +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 org.traccar.session.DeviceSession; + +import java.net.SocketAddress; +import java.nio.charset.StandardCharsets; +import java.util.LinkedList; +import java.util.List; +import java.util.regex.Pattern; + +public class VltProtocolDecoder extends BaseHttpProtocolDecoder { + + public VltProtocolDecoder(Protocol protocol) { + super(protocol); + } + + private static final Pattern PATTERN = new PatternBuilder() + .number("(dd)") // alert id + .expression("([HL])") // history + .number("([01])") // validity + .number("(dd)(dd)(dd)") // date (ddmmyy) + .number("(dd)(dd)(dd)") // time (hhmmss) + .number("(d{3}.d{6})([NS])") // latitude + .number("(d{3}.d{6})([EW])") // longitude + .number("(d{3})") // mcc + .expression("(x*[0-9]+)") // mnc + .number("(x{4})") // lac + .number("(d{9})") // cid + .number("(d{3}.d{2})") // speed + .number("(d{3}.d{2})") // course + .number("(d{2})") // satellites + .number("(d{2})") // hdop + .number("(d{2})") // rssi + .number("([01])") // ignition + .number("([01])") // charging + .expression("([HMS])") // vehicle mode + .compile(); + + private Position decodePosition(DeviceSession deviceSession, String sentence) { + + Parser parser = new Parser(PATTERN, sentence); + if (!parser.matches()) { + return null; + } + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + position.set(Position.KEY_EVENT, parser.nextInt()); + position.set(Position.KEY_ARCHIVE, parser.next().equals("H") ? true : null); + + position.setValid(parser.nextInt() > 0); + position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS)); + position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM)); + position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM)); + + int mcc = parser.nextInt(); + int mnc = Integer.parseInt(parser.next().replaceAll("x", "")); + int lac = parser.nextHexInt(); + int cid = parser.nextInt(); + + position.setSpeed(parser.nextDouble()); + position.setCourse(parser.nextDouble()); + + position.set(Position.KEY_SATELLITES, parser.nextInt()); + position.set(Position.KEY_HDOP, parser.nextInt()); + + position.setNetwork(new Network(CellTower.from(mcc, mnc, lac, cid, parser.nextInt()))); + + position.set(Position.KEY_IGNITION, parser.nextInt() > 0); + position.set(Position.KEY_CHARGE, parser.nextInt() > 0); + position.set(Position.KEY_MOTION, parser.next().equals("M")); + + return position; + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + FullHttpRequest request = (FullHttpRequest) msg; + QueryStringDecoder decoder = new QueryStringDecoder( + request.content().toString(StandardCharsets.US_ASCII), false); + String sentence = decoder.parameters().get("vltdata").iterator().next(); + + int index = 0; + String type = sentence.substring(index, index += 3); + String imei = sentence.substring(index, index += 15); + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); + if (deviceSession == null) { + sendResponse(channel, HttpResponseStatus.BAD_REQUEST); + return null; + } + + sendResponse(channel, HttpResponseStatus.OK); + + switch (type) { + case "NRM": + return decodePosition(deviceSession, sentence.substring(3 + 15)); + default: + List positions = new LinkedList<>(); + int count = Integer.parseInt(sentence.substring(index, index += 3)); + for (int i = 0; i < count; i++) { + positions.add(decodePosition(deviceSession, sentence.substring(index, index += 78))); + } + return positions; + } + } + +} -- cgit v1.2.3