From 2f41a4d95b5be4804b32cac6d96c1b152d53d7ec Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 28 Nov 2018 15:28:55 +1300
Subject: Extend KHD / Sabo SPG02B support

---
 src/org/traccar/protocol/KhdProtocolDecoder.java   | 39 +++++++++++++---------
 .../traccar/protocol/KhdProtocolDecoderTest.java   |  3 ++
 2 files changed, 26 insertions(+), 16 deletions(-)

diff --git a/src/org/traccar/protocol/KhdProtocolDecoder.java b/src/org/traccar/protocol/KhdProtocolDecoder.java
index f186fc0d5..0dd5b085a 100644
--- a/src/org/traccar/protocol/KhdProtocolDecoder.java
+++ b/src/org/traccar/protocol/KhdProtocolDecoder.java
@@ -50,7 +50,10 @@ public class KhdProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_POSITION_UPLOAD = 0x80;
     public static final int MSG_POSITION_REUPLOAD = 0x8E;
     public static final int MSG_ALARM = 0x82;
+    public static final int MSG_ADMIN_NUMBER = 0x83;
+    public static final int MSG_SEND_TEXT = 0x84;
     public static final int MSG_REPLY = 0x85;
+    public static final int MSG_SMS_ALARM_SWITCH = 0x86;
     public static final int MSG_PERIPHERAL = 0xA3;
 
     @Override
@@ -63,6 +66,26 @@ public class KhdProtocolDecoder extends BaseProtocolDecoder {
         int type = buf.readUnsignedByte();
         buf.readUnsignedShort(); // size
 
+        if (type == MSG_LOGIN || type == MSG_ADMIN_NUMBER || type == MSG_SEND_TEXT
+                || type == MSG_SMS_ALARM_SWITCH || type == MSG_POSITION_REUPLOAD) {
+
+            ByteBuf response = Unpooled.buffer();
+            response.writeByte(0x29);
+            response.writeByte(0x29); // header
+            response.writeByte(MSG_CONFIRMATION);
+            response.writeShort(5); // size
+            response.writeByte(buf.getByte(buf.writerIndex() - 2));
+            response.writeByte(type);
+            response.writeByte(buf.writerIndex() > 9 ? buf.getByte(9) : 0); // 10th byte
+            response.writeByte(Checksum.xor(response.nioBuffer()));
+            response.writeByte(0x0D); // ending
+
+            if (channel != null) {
+                channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+            }
+
+        }
+
         if (type == MSG_ON_DEMAND || type == MSG_POSITION_UPLOAD || type == MSG_POSITION_REUPLOAD
                 || type == MSG_ALARM || type == MSG_REPLY || type == MSG_PERIPHERAL) {
 
@@ -126,22 +149,6 @@ public class KhdProtocolDecoder extends BaseProtocolDecoder {
 
             return position;
 
-        } else if (type == MSG_LOGIN && channel != null) {
-
-            buf.skipBytes(4); // serial number
-            buf.readByte(); // reserved
-
-            ByteBuf response = Unpooled.buffer();
-            response.writeByte(0x29); response.writeByte(0x29); // header
-            response.writeByte(MSG_CONFIRMATION);
-            response.writeShort(5); // size
-            response.writeByte(buf.readUnsignedByte());
-            response.writeByte(type);
-            response.writeByte(0); // reserved
-            response.writeByte(Checksum.xor(response.nioBuffer()));
-            response.writeByte(0x0D); // ending
-            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
-
         }
 
         return null;
diff --git a/test/org/traccar/protocol/KhdProtocolDecoderTest.java b/test/org/traccar/protocol/KhdProtocolDecoderTest.java
index 21494014c..62b6070b6 100644
--- a/test/org/traccar/protocol/KhdProtocolDecoderTest.java
+++ b/test/org/traccar/protocol/KhdProtocolDecoderTest.java
@@ -13,6 +13,9 @@ public class KhdProtocolDecoderTest extends ProtocolTest {
         verifyNull(decoder, binary(
                 "2929b1000605162935b80d"));
 
+        verifyPosition(decoder, binary(
+                "29298e006d1f29402d181117083846801193910365274500000000f80000227ffc3f00001e00500000000000060088000000220019ffc100000000000000000000000000000000007080002000000016ff893839323534303231303734313134323334333639000800233030302e30306e0d"));
+
         verifyPosition(decoder, binary(
                 "2929a3002e1780c663170216203353003060811013839500000114f8000000ffff5000000a00000000000000060102003db70d"));
 
-- 
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