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Diffstat (limited to 'src/main/java/org/traccar/protocol/ArnaviBinaryProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/ArnaviBinaryProtocolDecoder.java177
1 files changed, 177 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/ArnaviBinaryProtocolDecoder.java b/src/main/java/org/traccar/protocol/ArnaviBinaryProtocolDecoder.java
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index 000000000..0924cfc40
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+++ b/src/main/java/org/traccar/protocol/ArnaviBinaryProtocolDecoder.java
@@ -0,0 +1,177 @@
+/*
+ * Copyright 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 Ivan Muratov (binakot@gmail.com)
+ *
+ * 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.Checksum;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.ByteBuffer;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class ArnaviBinaryProtocolDecoder extends BaseProtocolDecoder {
+
+ private static final byte HEADER_START_SIGN = (byte) 0xff;
+ private static final byte HEADER_VERSION_1 = 0x22;
+ private static final byte HEADER_VERSION_2 = 0x23;
+
+ private static final byte RECORD_PING = 0x00;
+ private static final byte RECORD_DATA = 0x01;
+ private static final byte RECORD_TEXT = 0x03;
+ private static final byte RECORD_FILE = 0x04;
+ private static final byte RECORD_BINARY = 0x06;
+
+ private static final byte TAG_LATITUDE = 3;
+ private static final byte TAG_LONGITUDE = 4;
+ private static final byte TAG_COORD_PARAMS = 5;
+
+ public ArnaviBinaryProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private void sendResponse(Channel channel, byte version, int index) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeByte(0x7b);
+ if (version == HEADER_VERSION_1) {
+ response.writeByte(0x00);
+ response.writeByte((byte) index);
+ } else if (version == HEADER_VERSION_2) {
+ response.writeByte(0x04);
+ response.writeByte(0x00);
+ ByteBuffer time = ByteBuffer.allocate(4).putInt((int) (System.currentTimeMillis() / 1000));
+ response.writeByte(Checksum.modulo256(time));
+ response.writeBytes(time);
+ }
+ response.writeByte(0x7d);
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
+ private Position decodePosition(DeviceSession deviceSession, ByteBuf buf, int length, Date time) {
+
+ final Position position = new Position();
+ position.setProtocol(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setTime(time);
+
+ int readBytes = 0;
+ while (readBytes < length) {
+ short tag = buf.readUnsignedByte();
+ switch (tag) {
+ case TAG_LATITUDE:
+ position.setLatitude(buf.readFloatLE());
+ position.setValid(true);
+ break;
+
+ case TAG_LONGITUDE:
+ position.setLongitude(buf.readFloatLE());
+ position.setValid(true);
+ break;
+
+ case TAG_COORD_PARAMS:
+ position.setCourse(buf.readUnsignedByte() * 2);
+ position.setAltitude(buf.readUnsignedByte() * 10);
+ byte satellites = buf.readByte();
+ position.set(Position.KEY_SATELLITES, satellites & 0x0F + (satellites >> 4) & 0x0F);
+ position.setSpeed(buf.readUnsignedByte());
+ break;
+
+ default:
+ buf.skipBytes(4);
+ break;
+ }
+
+ readBytes += 1 + 4;
+ }
+
+ return position;
+ }
+
+ @Override
+ protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ byte startSign = buf.readByte();
+
+ if (startSign == HEADER_START_SIGN) {
+
+ byte version = buf.readByte();
+
+ String imei = String.valueOf(buf.readLongLE());
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+
+ if (deviceSession != null) {
+ sendResponse(channel, version, 0);
+ }
+
+ return null;
+ }
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ List<Position> positions = new LinkedList<>();
+
+ int index = buf.readUnsignedByte();
+
+ byte recordType = buf.readByte();
+ while (buf.readableBytes() > 0) {
+ switch (recordType) {
+ case RECORD_PING:
+ case RECORD_DATA:
+ case RECORD_TEXT:
+ case RECORD_FILE:
+ case RECORD_BINARY:
+ int length = buf.readUnsignedShortLE();
+ Date time = new Date(buf.readUnsignedIntLE() * 1000);
+
+ if (recordType == RECORD_DATA) {
+ positions.add(decodePosition(deviceSession, buf, length, time));
+ } else {
+ buf.readBytes(length);
+ }
+
+ buf.readUnsignedByte(); // checksum
+ break;
+
+ default:
+ return null;
+ }
+
+ recordType = buf.readByte();
+ }
+
+ sendResponse(channel, HEADER_VERSION_1, index);
+
+ return positions;
+ }
+
+}