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authorAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
commit59416923dcb3a756eaf532cc4259f2f6625c0762 (patch)
tree9082dae6616deac8fda432b7bfd80e4a52b6d9dc /src/main/java/org/traccar/protocol/DmtProtocolDecoder.java
parent79a129dd6327d932133d6b9a50190d3f4927bff9 (diff)
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Convert project to gradle
Diffstat (limited to 'src/main/java/org/traccar/protocol/DmtProtocolDecoder.java')
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diff --git a/src/main/java/org/traccar/protocol/DmtProtocolDecoder.java b/src/main/java/org/traccar/protocol/DmtProtocolDecoder.java
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+/*
+ * Copyright 2017 - 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.BitUtil;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class DmtProtocolDecoder extends BaseProtocolDecoder {
+
+ public DmtProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_HELLO = 0x00;
+ public static final int MSG_HELLO_RESPONSE = 0x01;
+ public static final int MSG_DATA_RECORD = 0x04;
+ public static final int MSG_COMMIT = 0x05;
+ public static final int MSG_COMMIT_RESPONSE = 0x06;
+ public static final int MSG_DATA_RECORD_64 = 0x10;
+
+ public static final int MSG_CANNED_REQUEST_1 = 0x14;
+ public static final int MSG_CANNED_RESPONSE_1 = 0x15;
+ public static final int MSG_CANNED_REQUEST_2 = 0x22;
+ public static final int MSG_CANNED_RESPONSE_2 = 0x23;
+
+ private void sendResponse(Channel channel, int type, ByteBuf content) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeByte(0x02); response.writeByte(0x55); // header
+ response.writeByte(type);
+ response.writeShortLE(content != null ? content.readableBytes() : 0);
+ if (content != null) {
+ response.writeBytes(content);
+ content.release();
+ }
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
+ private List<Position> decodeFixed64(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ List<Position> positions = new LinkedList<>();
+
+ while (buf.readableBytes() >= 64) {
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ buf.readByte(); // type
+
+ position.set(Position.KEY_INDEX, buf.readUnsignedIntLE());
+
+ long time = buf.readUnsignedIntLE();
+ position.setTime(new DateBuilder()
+ .setYear((int) (2000 + (time & 0x3F)))
+ .setMonth((int) (time >> 6) & 0xF)
+ .setDay((int) (time >> 10) & 0x1F)
+ .setHour((int) (time >> 15) & 0x1F)
+ .setMinute((int) (time >> 20) & 0x3F)
+ .setSecond((int) (time >> 26) & 0x3F)
+ .getDate());
+
+ position.setLongitude(buf.readIntLE() * 0.0000001);
+ position.setLatitude(buf.readIntLE() * 0.0000001);
+ position.setSpeed(UnitsConverter.knotsFromCps(buf.readUnsignedShortLE()));
+ position.setCourse(buf.readUnsignedByte() * 2);
+ position.setAltitude(buf.readShortLE());
+
+ buf.readUnsignedShortLE(); // position accuracy
+ buf.readUnsignedByte(); // speed accuracy
+
+ position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+
+ position.setValid(BitUtil.check(buf.readByte(), 0));
+
+ position.set(Position.KEY_INPUT, buf.readUnsignedIntLE());
+ position.set(Position.KEY_OUTPUT, buf.readUnsignedShortLE());
+
+ for (int i = 1; i <= 5; i++) {
+ position.set(Position.PREFIX_ADC + i, buf.readShortLE());
+ }
+
+ position.set(Position.KEY_DEVICE_TEMP, buf.readByte());
+
+ buf.readShortLE(); // accelerometer x
+ buf.readShortLE(); // accelerometer y
+ buf.readShortLE(); // accelerometer z
+
+ buf.skipBytes(8); // device id
+
+ position.set(Position.KEY_PDOP, buf.readUnsignedShortLE() * 0.01);
+
+ buf.skipBytes(2); // reserved
+
+ buf.readUnsignedShortLE(); // checksum
+
+ positions.add(position);
+ }
+
+ return positions;
+ }
+
+ private List<Position> decodeStandard(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ List<Position> positions = new LinkedList<>();
+
+ while (buf.isReadable()) {
+ int recordEnd = buf.readerIndex() + buf.readUnsignedShortLE();
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.set(Position.KEY_INDEX, buf.readUnsignedIntLE());
+
+ position.setDeviceTime(new Date(1356998400000L + buf.readUnsignedIntLE() * 1000)); // since 1 Jan 2013
+
+ position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+
+ while (buf.readerIndex() < recordEnd) {
+
+ int fieldId = buf.readUnsignedByte();
+ int fieldLength = buf.readUnsignedByte();
+ int fieldEnd = buf.readerIndex() + (fieldLength == 255 ? buf.readUnsignedShortLE() : fieldLength);
+
+ if (fieldId == 0) {
+
+ position.setFixTime(new Date(1356998400000L + buf.readUnsignedIntLE() * 1000));
+ position.setLatitude(buf.readIntLE() * 0.0000001);
+ position.setLongitude(buf.readIntLE() * 0.0000001);
+ position.setAltitude(buf.readShortLE());
+ position.setSpeed(UnitsConverter.knotsFromCps(buf.readUnsignedShortLE()));
+
+ buf.readUnsignedByte(); // speed accuracy
+
+ position.setCourse(buf.readUnsignedByte() * 2);
+
+ position.set(Position.KEY_PDOP, buf.readUnsignedByte() * 0.1);
+
+ position.setAccuracy(buf.readUnsignedByte());
+ position.setValid(buf.readUnsignedByte() != 0);
+
+ } else if (fieldId == 2) {
+
+ int input = buf.readIntLE();
+ int output = buf.readUnsignedShortLE();
+ int status = buf.readUnsignedShortLE();
+
+ position.set(Position.KEY_IGNITION, BitUtil.check(input, 0));
+
+ position.set(Position.KEY_INPUT, input);
+ position.set(Position.KEY_OUTPUT, output);
+ position.set(Position.KEY_STATUS, status);
+
+ } else if (fieldId == 6) {
+
+ while (buf.readerIndex() < fieldEnd) {
+ switch (buf.readUnsignedByte()) {
+ case 1:
+ position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
+ break;
+ case 2:
+ position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.01);
+ break;
+ case 3:
+ position.set(Position.KEY_DEVICE_TEMP, buf.readShortLE() * 0.01);
+ break;
+ case 4:
+ position.set(Position.KEY_RSSI, buf.readUnsignedShortLE());
+ break;
+ case 5:
+ position.set("solarPower", buf.readUnsignedShortLE() * 0.001);
+ break;
+ default:
+ break;
+ }
+ }
+
+ }
+
+ buf.readerIndex(fieldEnd);
+
+ }
+
+ if (position.getFixTime() == null) {
+ getLastLocation(position, position.getDeviceTime());
+ }
+
+ positions.add(position);
+ }
+
+ return positions;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.skipBytes(2); // header
+
+ int type = buf.readUnsignedByte();
+ int length = buf.readUnsignedShortLE();
+
+ if (type == MSG_HELLO) {
+
+ buf.readUnsignedIntLE(); // device serial number
+
+ DeviceSession deviceSession = getDeviceSession(
+ channel, remoteAddress, buf.readSlice(15).toString(StandardCharsets.US_ASCII));
+
+ ByteBuf response = Unpooled.buffer();
+ if (length == 51) {
+ response.writeByte(0); // reserved
+ response.writeIntLE(0); // reserved
+ } else {
+ response.writeIntLE((int) ((System.currentTimeMillis() - 1356998400000L) / 1000));
+ response.writeIntLE(deviceSession != null ? 0 : 1); // flags
+ }
+
+ sendResponse(channel, MSG_HELLO_RESPONSE, response);
+
+ } else if (type == MSG_COMMIT) {
+
+ ByteBuf response = Unpooled.buffer(0);
+ response.writeByte(1); // flags (success)
+ sendResponse(channel, MSG_COMMIT_RESPONSE, response);
+
+ } else if (type == MSG_CANNED_REQUEST_1) {
+
+ ByteBuf response = Unpooled.buffer(0);
+ response.writeBytes(new byte[12]);
+ sendResponse(channel, MSG_CANNED_RESPONSE_1, response);
+
+ } else if (type == MSG_CANNED_REQUEST_2) {
+
+ sendResponse(channel, MSG_CANNED_RESPONSE_2, null);
+
+ } else if (type == MSG_DATA_RECORD_64) {
+
+ return decodeFixed64(channel, remoteAddress, buf);
+
+ } else if (type == MSG_DATA_RECORD) {
+
+ return decodeStandard(channel, remoteAddress, buf);
+
+ }
+
+ return null;
+ }
+
+}