1 files changed, 153 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
new file mode 100644
index 000000000..256848990
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2019 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+import org.traccar.model.WifiAccessPoint;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+
+public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
+
+    public Minifinder2ProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_DATA = 0x01;
+
+    private String decodeAlarm(int code) {
+        if (BitUtil.check(code, 0)) {
+            return Position.ALARM_LOW_BATTERY;
+        }
+        if (BitUtil.check(code, 1)) {
+            return Position.ALARM_OVERSPEED;
+        }
+        if (BitUtil.check(code, 2)) {
+            return Position.ALARM_FALL_DOWN;
+        }
+        if (BitUtil.check(code, 8)) {
+            return Position.ALARM_POWER_OFF;
+        }
+        if (BitUtil.check(code, 9)) {
+            return Position.ALARM_POWER_ON;
+        }
+        if (BitUtil.check(code, 12)) {
+            return Position.ALARM_SOS;
+        }
+        return null;
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.readUnsignedByte(); // header
+        buf.readUnsignedByte(); // properties
+        buf.readUnsignedShortLE(); // length
+        buf.readUnsignedShortLE(); // checksum
+        buf.readUnsignedShortLE(); // index
+        int type = buf.readUnsignedByte();
+
+        if (type == MSG_DATA) {
+
+            Position position = new Position(getProtocolName());
+
+            while (buf.isReadable()) {
+                int endIndex = buf.readUnsignedByte() + buf.readerIndex();
+                int key = buf.readUnsignedByte();
+                switch (key) {
+                    case 0x01:
+                        DeviceSession deviceSession = getDeviceSession(
+                                channel, remoteAddress, buf.readBytes(15).toString(StandardCharsets.US_ASCII));
+                        if (deviceSession == null) {
+                            return null;
+                        }
+                        position.setDeviceId(deviceSession.getDeviceId());
+                        break;
+                    case 0x02:
+                        position.set(Position.KEY_ALARM, decodeAlarm(buf.readIntLE()));
+                        break;
+                    case 0x20:
+                        position.setLatitude(buf.readIntLE() * 0.0000001);
+                        position.setLongitude(buf.readIntLE() * 0.0000001);
+                        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
+                        position.setCourse(buf.readUnsignedShortLE());
+                        position.setAltitude(buf.readShortLE());
+                        position.setValid(buf.readUnsignedShortLE() > 0);
+                        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+                        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+                        break;
+                    case 0x21:
+                        int mcc = buf.readUnsignedShortLE();
+                        int mnc = buf.readUnsignedByte();
+                        if (position.getNetwork() == null) {
+                            position.setNetwork(new Network());
+                        }
+                        while (buf.readerIndex() < endIndex) {
+                            int rssi = buf.readByte();
+                            position.getNetwork().addCellTower(CellTower.from(
+                                    mcc, mnc, buf.readUnsignedShortLE(), buf.readUnsignedShortLE(), rssi));
+                        }
+                        break;
+                    case 0x22:
+                        if (position.getNetwork() == null) {
+                            position.setNetwork(new Network());
+                        }
+                        while (buf.readerIndex() < endIndex) {
+                            int rssi = buf.readByte();
+                            String mac = ByteBufUtil.hexDump(buf.readSlice(6)).replaceAll("(..)", "$1:");
+                            position.getNetwork().addWifiAccessPoint(WifiAccessPoint.from(
+                                    mac.substring(0, mac.length() - 1), rssi));
+                        }
+                        break;
+                    case 0x40:
+                        buf.readUnsignedIntLE(); // timestamp
+                        int heartRate = buf.readUnsignedByte();
+                        if (heartRate > 1) {
+                            position.set(Position.KEY_HEART_RATE, heartRate);
+                        }
+                        break;
+                    default:
+                        break;
+                }
+                buf.readerIndex(endIndex);
+            }
+
+            if (!position.getAttributes().containsKey(Position.KEY_SATELLITES)) {
+                getLastLocation(position, null);
+            }
+
+            return position.getDeviceId() > 0 ? position : null;
+
+        }
+
+        return null;
+    }
+
+}