From 325479e6386d8437e410076cfbada69db7af7dbb Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 14 Nov 2019 21:32:23 -0800
Subject: Solar Powered GPS protocol

---
 .../protocol/SolarPoweredProtocolDecoder.java      | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 src/main/java/org/traccar/protocol/SolarPoweredProtocolDecoder.java

(limited to 'src/main/java/org/traccar/protocol/SolarPoweredProtocolDecoder.java')

diff --git a/src/main/java/org/traccar/protocol/SolarPoweredProtocolDecoder.java b/src/main/java/org/traccar/protocol/SolarPoweredProtocolDecoder.java
new file mode 100644
index 000000000..34d749816
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/SolarPoweredProtocolDecoder.java
@@ -0,0 +1,97 @@
+/*
+ * 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.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+
+public class SolarPoweredProtocolDecoder extends BaseProtocolDecoder {
+
+    public SolarPoweredProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_ACTIVE_REPORTING = 0x11;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.readUnsignedByte(); // start marker
+
+        String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(0, 15);
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        int type = buf.readUnsignedByte();
+        buf.readUnsignedShort(); // attributes
+
+        if (type == MSG_ACTIVE_REPORTING) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            while (buf.readableBytes() > 2) {
+                int tag = buf.readUnsignedByte();
+                int length = buf.readUnsignedByte();
+                switch (tag) {
+                    case 0x81:
+                        int status = 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.setLatitude(buf.readUnsignedInt() * 0.000001);
+                        if (BitUtil.check(status, 3)) {
+                            position.setLatitude(-position.getLatitude());
+                        }
+                        position.setLongitude(buf.readUnsignedInt() * 0.000001);
+                        if (BitUtil.check(status, 3)) {
+                            position.setLongitude(-position.getLongitude());
+                        }
+                        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
+                        position.set(Position.KEY_DEVICE_TEMP, (int) buf.readByte());
+                        position.set(Position.KEY_BATTERY, buf.readUnsignedByte() * 0.02);
+                        position.setCourse(buf.readUnsignedByte());
+                        break;
+                    default:
+                        buf.skipBytes(length);
+                        break;
+                }
+            }
+
+            return position;
+
+        }
+
+        return null;
+    }
+
+}
-- 
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