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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/Avl301ProtocolDecoder.java
parent79a129dd6327d932133d6b9a50190d3f4927bff9 (diff)
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Convert project to gradle
Diffstat (limited to 'src/main/java/org/traccar/protocol/Avl301ProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/Avl301ProtocolDecoder.java145
1 files changed, 145 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Avl301ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Avl301ProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/Avl301ProtocolDecoder.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2015 - 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.DateBuilder;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+
+public class Avl301ProtocolDecoder extends BaseProtocolDecoder {
+
+ public Avl301ProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private String readImei(ByteBuf buf) {
+ int b = buf.readUnsignedByte();
+ StringBuilder imei = new StringBuilder();
+ imei.append(b & 0x0F);
+ for (int i = 0; i < 7; i++) {
+ b = buf.readUnsignedByte();
+ imei.append((b & 0xF0) >> 4);
+ imei.append(b & 0x0F);
+ }
+ return imei.toString();
+ }
+
+ public static final int MSG_LOGIN = 'L';
+ public static final int MSG_STATUS = 'H';
+ public static final int MSG_GPS_LBS_STATUS = '$';
+
+ private void sendResponse(Channel channel, int type) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer(5);
+ response.writeByte('$');
+ response.writeByte(type);
+ response.writeByte('#');
+ response.writeByte('\r'); response.writeByte('\n');
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.skipBytes(1); // header
+ int type = buf.readUnsignedByte();
+ buf.readUnsignedByte(); // length
+
+ if (type == MSG_LOGIN) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, readImei(buf));
+ if (deviceSession == null) {
+ sendResponse(channel, type);
+ }
+
+ } else if (type == MSG_STATUS) {
+
+ sendResponse(channel, type);
+
+ } else if (type == MSG_GPS_LBS_STATUS) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ DateBuilder dateBuilder = new DateBuilder()
+ .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+ .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+ position.setTime(dateBuilder.getDate());
+
+ int gpsLength = buf.readUnsignedByte(); // gps len and sat
+ position.set(Position.KEY_SATELLITES, gpsLength & 0xf);
+
+ position.set(Position.KEY_SATELLITES_VISIBLE, buf.readUnsignedByte()); // satellites
+
+ double latitude = buf.readUnsignedInt() / 600000.0;
+ double longitude = buf.readUnsignedInt() / 600000.0;
+ position.setSpeed(buf.readUnsignedByte());
+
+ int union = buf.readUnsignedShort(); // course and flags
+ position.setCourse(union & 0x03FF);
+ position.setValid((union & 0x1000) != 0);
+ if ((union & 0x0400) != 0) {
+ latitude = -latitude;
+ }
+ if ((union & 0x0800) != 0) {
+ longitude = -longitude;
+ }
+
+ position.setLatitude(latitude);
+ position.setLongitude(longitude);
+
+ if ((union & 0x4000) != 0) {
+ position.set("acc", (union & 0x8000) != 0);
+ }
+
+ position.setNetwork(new Network(
+ CellTower.fromLacCid(buf.readUnsignedShort(), buf.readUnsignedMedium())));
+
+ position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
+ int flags = buf.readUnsignedByte();
+ position.set("acc", (flags & 0x2) != 0);
+
+ // parse other flags
+
+ position.set(Position.KEY_POWER, buf.readUnsignedByte());
+ position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+
+ return position;
+ }
+
+ return null;
+ }
+
+}