Implement ThinkPower protocol

2 files changed, 217 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/protocol/ThinkPowerProtocol.java b/src/main/java/org/traccar/protocol/ThinkPowerProtocol.java
new file mode 100644
index 000000000..ece1b0544
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/ThinkPowerProtocol.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2021 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.handler.codec.LengthFieldBasedFrameDecoder;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+
+public class ThinkPowerProtocol extends BaseProtocol {
+
+    public ThinkPowerProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new LengthFieldBasedFrameDecoder(1024, 2, 2, 2, 0));
+                pipeline.addLast(new ThinkPowerProtocolDecoder(ThinkPowerProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/ThinkPowerProtocolDecoder.java b/src/main/java/org/traccar/protocol/ThinkPowerProtocolDecoder.java
new file mode 100644
index 000000000..b3f943078
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/ThinkPowerProtocolDecoder.java
@@ -0,0 +1,182 @@
+/*
+ * Copyright 2021 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.Checksum;
+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 ThinkPowerProtocolDecoder extends BaseProtocolDecoder {
+
+    public ThinkPowerProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_LOGIN_REQUEST = 0x01;
+    public static final int MSG_LOGIN_RESPONSE = 0x02;
+    public static final int MSG_HEARTBEAT_REQUEST = 0x03;
+    public static final int MSG_HEARTBEAT_RESPONSE = 0x04;
+    public static final int MSG_RECORD_REPORT = 0x05;
+    public static final int MSG_RECORD_RESPONSE = 0x06;
+
+    private void sendResponse(Channel channel, int type, int index, ByteBuf content) {
+        if (channel != null) {
+            ByteBuf response = Unpooled.buffer();
+            response.writeByte(type);
+            response.writeByte(index);
+            if (content != null) {
+                response.writeShort(content.readableBytes());
+                response.writeBytes(content);
+                content.release();
+            } else {
+                response.writeShort(0);
+            }
+            response.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, response.nioBuffer()));
+            channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+        }
+    }
+
+    private void decodeValue(Position position, int type, ByteBuf buf) {
+        switch (type) {
+            case 0x01:
+                position.setValid(true);
+                position.setLatitude(buf.readInt() * 0.0000001);
+                position.setLongitude(buf.readInt() * 0.0000001);
+                position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort() * 0.1));
+                position.setCourse(buf.readUnsignedShort() * 0.01);
+                break;
+            case 0x02:
+                position.setValid(buf.readUnsignedByte() > 0);
+                break;
+            case 0x03:
+                buf.skipBytes(3); // geofence
+                break;
+            case 0x06:
+            case 0x07:
+            case 0x08:
+                buf.skipBytes(2); // g-sensor x/y/z
+                break;
+            case 0x09:
+                buf.readUnsignedByte(); // collision alarm
+                break;
+            case 0x0A:
+                buf.readUnsignedByte(); // drop alarm
+                break;
+            case 0x10:
+                if (buf.readUnsignedByte() > 0) {
+                    position.set(Position.KEY_ALARM, Position.ALARM_SOS);
+                }
+                break;
+            case 0x12:
+                position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.1);
+                break;
+            case 0x13:
+                if (buf.readUnsignedByte() > 0) {
+                    position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY);
+                }
+                break;
+            case 0x16:
+                buf.readUnsignedShort(); // temperature
+                break;
+            case 0x17:
+                buf.readUnsignedByte(); // humidity
+                break;
+            case 0x18:
+                buf.readUnsignedShort(); // high temperature
+                break;
+            case 0x19:
+                buf.readUnsignedByte(); // high humidity
+                break;
+            case 0x50:
+                if (buf.readUnsignedByte() > 0) {
+                    position.set(Position.KEY_ALARM, Position.ALARM_REMOVING);
+                }
+                break;
+            case 0x51:
+                if (buf.readUnsignedByte() > 0) {
+                    position.set(Position.KEY_ALARM, Position.ALARM_TAMPERING);
+                }
+                break;
+            default:
+                break;
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        int type = buf.readUnsignedByte();
+        int index = buf.readUnsignedByte();
+        buf.readUnsignedShort(); // length
+
+        if (type == MSG_LOGIN_REQUEST) {
+
+            buf.readUnsignedByte(); // protocol major version
+            buf.readUnsignedByte(); // protocol minor version
+
+            String id = buf.readCharSequence(buf.readUnsignedByte(), StandardCharsets.US_ASCII).toString();
+            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
+
+            ByteBuf content = Unpooled.buffer();
+            content.writeByte(deviceSession != null ? 0 : 4);
+            sendResponse(channel, MSG_LOGIN_RESPONSE, index, content);
+
+        } else if (type == MSG_HEARTBEAT_REQUEST) {
+
+            sendResponse(channel, MSG_HEARTBEAT_RESPONSE, index, null);
+
+        } else if (type == MSG_RECORD_REPORT) {
+
+            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+            if (deviceSession == null) {
+                return null;
+            }
+
+            buf.readUnsignedByte(); // count
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            position.setTime(new Date(buf.readUnsignedInt() * 1000));
+
+            while (buf.readableBytes() > 2) {
+                decodeValue(position, buf.readUnsignedByte(), buf);
+            }
+
+            sendResponse(channel, MSG_RECORD_RESPONSE, index, null);
+
+            return position;
+
+        }
+
+        return null;
+    }
+
+}