From 3471e62b0f3949621265c80dcaf2ba714aade697 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Tue, 17 Nov 2015 11:36:08 +1300
Subject: Finish Huabao protocol implementation

---
 .../traccar/protocol/HuabaoProtocolDecoder.java    | 113 ++++++++++++++++++++-
 1 file changed, 109 insertions(+), 4 deletions(-)

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

diff --git a/src/org/traccar/protocol/HuabaoProtocolDecoder.java b/src/org/traccar/protocol/HuabaoProtocolDecoder.java
index 931f985a5..792c89c8b 100644
--- a/src/org/traccar/protocol/HuabaoProtocolDecoder.java
+++ b/src/org/traccar/protocol/HuabaoProtocolDecoder.java
@@ -16,10 +16,20 @@
 package org.traccar.protocol;
 
 import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
 import org.jboss.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.ChannelBufferTools;
+import org.traccar.helper.Checksum;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
 
 import java.net.SocketAddress;
+import java.nio.charset.Charset;
+import java.util.TimeZone;
 
 public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
 
@@ -27,7 +37,38 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
+    public static final int MSG_GENERAL_RESPONSE = 0x8001;
     public static final int MSG_TERMINAL_REGISTER = 0x0100;
+    public static final int MSG_TERMINAL_REGISTER_RESPONSE = 0x8100;
+    public static final int MSG_TERMINAL_AUTH = 0x0102;
+    public static final int MSG_LOCATION_REPORT = 0x0200;
+
+    public static final int RESULT_SUCCESS = 0;
+
+    private void sendResponse(
+            Channel channel, SocketAddress remoteAddress, int type, ChannelBuffer id, ChannelBuffer data) {
+        ChannelBuffer response = ChannelBuffers.dynamicBuffer();
+        response.writeByte(0x7e);
+        response.writeShort(type);
+        response.writeShort(data.readableBytes());
+        response.writeBytes(id);
+        response.writeShort(1); // index
+        response.writeBytes(data);
+        response.writeByte(Checksum.xor(response.toByteBuffer(1, response.readableBytes() - 1)));
+        response.writeByte(0x7e);
+        if (channel != null) {
+            channel.write(response, remoteAddress);
+        }
+    }
+
+    private void sendGeneralResponse(
+            Channel channel, SocketAddress remoteAddress, ChannelBuffer id, int type, int index) {
+        ChannelBuffer response = ChannelBuffers.dynamicBuffer();
+        response.writeShort(index);
+        response.writeShort(type);
+        response.writeByte(RESULT_SUCCESS);
+        sendResponse(channel, remoteAddress, MSG_GENERAL_RESPONSE, id, response);
+    }
 
     @Override
     protected Object decode(
@@ -36,10 +77,74 @@ public class HuabaoProtocolDecoder extends BaseProtocolDecoder {
         ChannelBuffer buf = (ChannelBuffer) msg;
 
         buf.readUnsignedByte(); // start marker
-        //int type = buf.readUnsignedShort();
-        //int flags = buf.readUnsignedShort();
-        buf.skipBytes(6); // phone number
-        buf.readUnsignedShort(); // index
+        int type = buf.readUnsignedShort();
+        buf.readUnsignedShort(); // body length
+        ChannelBuffer id = buf.readBytes(6); // phone number
+        int index = buf.readUnsignedShort();
+
+        if (!identify(id.toString(Charset.defaultCharset()), channel, remoteAddress)) {
+            return null;
+        }
+
+        if (type == MSG_TERMINAL_REGISTER) {
+
+            ChannelBuffer response = ChannelBuffers.dynamicBuffer();
+            response.writeShort(index);
+            response.writeByte(RESULT_SUCCESS);
+            response.writeBytes("authentication".getBytes(Charset.defaultCharset()));
+            sendResponse(channel, remoteAddress, MSG_TERMINAL_REGISTER_RESPONSE, id, response);
+
+        } else if (type == MSG_TERMINAL_AUTH) {
+
+            sendGeneralResponse(channel, remoteAddress, id, type, index);
+
+        } else if (type == MSG_LOCATION_REPORT) {
+
+            Position position = new Position();
+            position.setProtocol(getProtocolName());
+            position.setDeviceId(getDeviceId());
+
+            position.set(Event.KEY_ALARM, buf.readUnsignedInt());
+
+            int flags = buf.readInt();
+
+            position.set(Event.KEY_IGNITION, BitUtil.check(flags, 0));
+
+            position.setValid(BitUtil.check(flags, 1));
+
+            double lat = buf.readUnsignedInt() * 0.000001;
+            double lon = buf.readUnsignedInt() * 0.000001;
+
+            if (BitUtil.check(flags, 2)) {
+                position.setLatitude(-lat);
+            } else {
+                position.setLatitude(lat);
+            }
+
+            if (BitUtil.check(flags, 3)) {
+                position.setLongitude(-lon);
+            } else {
+                position.setLongitude(lon);
+            }
+
+            position.setAltitude(buf.readShort());
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort() * 0.1));
+            position.setCourse(buf.readUnsignedShort());
+
+            DateBuilder dateBuilder = new DateBuilder(TimeZone.getTimeZone("GMT+8"))
+                    .setYear(ChannelBufferTools.readHexInteger(buf, 2))
+                    .setMonth(ChannelBufferTools.readHexInteger(buf, 2))
+                    .setDay(ChannelBufferTools.readHexInteger(buf, 2))
+                    .setHour(ChannelBufferTools.readHexInteger(buf, 2))
+                    .setMinute(ChannelBufferTools.readHexInteger(buf, 2))
+                    .setSecond(ChannelBufferTools.readHexInteger(buf, 2));
+            position.setTime(dateBuilder.getDate());
+
+            // additional information
+
+            return position;
+
+        }
 
         return null;
     }
-- 
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