1 files changed, 129 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/AstraProtocolDecoder.java b/src/main/java/org/traccar/protocol/AstraProtocolDecoder.java
new file mode 100644
index 000000000..e6f546b9f
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/AstraProtocolDecoder.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2016 - 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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+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.LinkedList;
+import java.util.List;
+
+public class AstraProtocolDecoder extends BaseProtocolDecoder {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(AstraProtocolDecoder.class);
+
+    public AstraProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_HEARTBEAT = 0x1A;
+    public static final int MSG_DATA = 0x10;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        if (channel != null) {
+            channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(new byte[] {0x06}), remoteAddress));
+        }
+
+        buf.readUnsignedByte(); // protocol
+        buf.readUnsignedShort(); // length
+
+        String imei = String.format("%08d", buf.readUnsignedInt()) + String.format("%07d", buf.readUnsignedMedium());
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        List<Position> positions = new LinkedList<>();
+
+        while (buf.readableBytes() > 2) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            buf.readUnsignedByte(); // index
+
+            position.setValid(true);
+            position.setLatitude(buf.readInt() * 0.000001);
+            position.setLongitude(buf.readInt() * 0.000001);
+
+            DateBuilder dateBuilder = new DateBuilder()
+                    .setDate(1980, 1, 6).addMillis(buf.readUnsignedInt() * 1000L);
+            position.setTime(dateBuilder.getDate());
+
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte() * 2));
+            position.setCourse(buf.readUnsignedByte() * 2);
+
+            int reason = buf.readUnsignedMedium();
+            position.set(Position.KEY_EVENT, reason);
+
+            int status = buf.readUnsignedShort();
+            position.set(Position.KEY_STATUS, status);
+
+            position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
+            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedByte());
+            position.set(Position.KEY_BATTERY, buf.readUnsignedByte());
+            position.set(Position.KEY_POWER, buf.readUnsignedByte());
+
+            buf.readUnsignedByte(); // max journey speed
+            buf.skipBytes(6); // accelerometer
+            position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort());
+            buf.readUnsignedShort(); // journey idle time
+
+            position.setAltitude(buf.readUnsignedByte() * 20);
+
+            int quality = buf.readUnsignedByte();
+            position.set(Position.KEY_SATELLITES, quality & 0xf);
+            position.set(Position.KEY_RSSI, quality >> 4);
+
+            buf.readUnsignedByte(); // geofence events
+
+            if (BitUtil.check(status, 8)) {
+                position.set(Position.KEY_DRIVER_UNIQUE_ID, buf.readSlice(7).toString(StandardCharsets.US_ASCII));
+                position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium() * 1000);
+                position.set(Position.KEY_HOURS, UnitsConverter.msFromHours(buf.readUnsignedShort()));
+            }
+
+            if (BitUtil.check(status, 6)) {
+                LOGGER.warn("Extension data is not supported");
+                return position;
+            }
+
+            positions.add(position);
+
+        }
+
+        return positions;
+    }
+
+}