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authorAnton Tananaev <anton.tananaev@gmail.com>2020-05-30 12:21:12 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2020-05-30 12:21:12 -0700
commiteb4e0be40343a6b0cd91b083ba185729f8aed334 (patch)
treec45af6bc7e473692158d12868a92b70320c1f793 /src/main/java/org/traccar/protocol/WliProtocolDecoder.java
parentc6c94fe8e4ba1954666aaf7ef86f3dfb8fb88181 (diff)
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Implement Wireless Links protocol
Devices: STX/Piccolo Plus/ATX2S/TMX/Hybrid/ATX/ATX_II
Diffstat (limited to 'src/main/java/org/traccar/protocol/WliProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/WliProtocolDecoder.java134
1 files changed, 134 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/WliProtocolDecoder.java b/src/main/java/org/traccar/protocol/WliProtocolDecoder.java
new file mode 100644
index 000000000..fb3d076c1
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/WliProtocolDecoder.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2020 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+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;
+
+public class WliProtocolDecoder extends BaseProtocolDecoder {
+
+ public WliProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.readUnsignedByte(); // header
+ int type = buf.readUnsignedByte();
+
+ if (type == '1') {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.set(Position.KEY_INDEX, buf.readUnsignedShort());
+
+ buf.readUnsignedShort(); // length
+ buf.readUnsignedShort(); // checksum
+ buf.readUnsignedByte(); // application message type
+ buf.readUnsignedByte(); // delimiter
+
+ while (buf.readableBytes() > 1) {
+
+ int fieldNumber = buf.readUnsignedByte();
+
+ buf.readUnsignedByte(); // delimiter
+
+ if (buf.getUnsignedByte(buf.readerIndex()) == 0xFF) {
+
+ buf.readUnsignedByte(); // binary type indication
+ int endIndex = buf.readUnsignedShort() + buf.readerIndex();
+
+ if (fieldNumber == 52) {
+ position.setValid(true);
+ buf.readUnsignedByte(); // reason
+ buf.readUnsignedByte(); // century
+ DateBuilder dateBuilder = new DateBuilder()
+ .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+ .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+ position.setFixTime(dateBuilder.getDate());
+ position.setLatitude(buf.readInt() / 600000.0);
+ position.setLongitude(buf.readInt() / 600000.0);
+ position.setSpeed(buf.readUnsignedShort());
+ position.setCourse(buf.readUnsignedShort() * 0.1);
+ position.set(Position.KEY_ODOMETER, UnitsConverter.metersFromFeet(buf.readUnsignedInt()));
+ position.setAltitude(buf.readInt() * 0.1);
+ }
+
+ buf.readerIndex(endIndex);
+
+ } else {
+
+ int endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0);
+ String value = buf.readCharSequence(
+ endIndex - buf.readerIndex(), StandardCharsets.US_ASCII).toString();
+
+ switch (fieldNumber) {
+ case 246:
+ String[] values = value.split(",");
+ position.set(Position.KEY_POWER, Integer.parseInt(values[2]) * 0.01);
+ position.set(Position.KEY_BATTERY, Integer.parseInt(values[3]) * 0.01);
+ break;
+ case 255:
+ position.setDeviceTime(new Date(Long.parseLong(value) * 1000));
+ break;
+ default:
+ break;
+ }
+
+ }
+
+ buf.readUnsignedByte(); // delimiter
+
+ }
+
+ if (!position.getValid()) {
+ getLastLocation(position, position.getDeviceTime());
+ }
+
+ return position;
+
+ } else if (type == '2') {
+
+ String id = buf.toString(buf.readerIndex(), buf.readableBytes() - 1, StandardCharsets.US_ASCII);
+ getDeviceSession(channel, remoteAddress, id);
+ return null;
+
+ }
+
+ return null;
+ }
+
+}