1 files changed, 119 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/AnytrekProtocolDecoder.java b/src/org/traccar/protocol/AnytrekProtocolDecoder.java
new file mode 100644
index 000000000..defb6949f
--- /dev/null
+++ b/src/org/traccar/protocol/AnytrekProtocolDecoder.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright 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.ByteBufUtil;
+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.helper.BitUtil;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+
+public class AnytrekProtocolDecoder extends BaseProtocolDecoder {
+
+    public AnytrekProtocolDecoder(AnytrekProtocol protocol) {
+        super(protocol);
+    }
+
+    private void sendResponse(Channel channel, SocketAddress remoteAddress, int type) {
+        if (channel != null) {
+            ByteBuf response = Unpooled.buffer();
+            response.writeShort(0x7878);
+            response.writeShortLE(1 + 1 + 2 + 1 + 2); // length
+            response.writeByte(type);
+            response.writeByte(0); // error
+            response.writeShortLE(0); // report interval
+            response.writeByte(0); // clear alarm
+            response.writeShortLE(0); // checksum
+            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(2); // header
+        buf.readUnsignedShortLE(); // size
+        int type = buf.readUnsignedByte();
+
+        String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(2);
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.set(Position.KEY_VERSION_FW, buf.readUnsignedShortLE());
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
+        position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+
+        DateBuilder dateBuilder = new DateBuilder()
+                .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+        position.setTime(dateBuilder.getDate());
+
+        position.set(Position.KEY_SATELLITES, BitUtil.to(buf.readUnsignedByte(), 4));
+
+        double latitude = buf.readUnsignedIntLE() / 1800000.0;
+        double longitude = buf.readUnsignedIntLE() / 1800000.0;
+        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
+
+        int flags = buf.readUnsignedShortLE();
+        position.setCourse(BitUtil.to(flags, 10));
+        position.setValid(BitUtil.check(flags, 12));
+
+        if (!BitUtil.check(flags, 10)) {
+            latitude = -latitude;
+        }
+        if (BitUtil.check(flags, 11)) {
+            longitude = -longitude;
+        }
+
+        position.setLatitude(latitude);
+        position.setLongitude(longitude);
+
+        buf.readUnsignedIntLE(); // info index
+        buf.readUnsignedIntLE(); // setting index
+
+        flags = buf.readUnsignedByte();
+        position.set(Position.KEY_CHARGE, BitUtil.check(flags, 0));
+        position.set(Position.KEY_IGNITION, BitUtil.check(flags, 1));
+        position.set(Position.KEY_ALARM, BitUtil.check(flags, 4) ? Position.ALARM_GENERAL : null);
+
+        buf.readUnsignedShortLE(); // charge current
+
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+
+        sendResponse(channel, remoteAddress, type);
+
+        return position;
+    }
+
+}