From 08d7ce0017f7113f3db961ae19cae7b85e386278 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 30 Jun 2021 21:25:06 -0700
Subject: Fix services response

---
 .../protocol/Minifinder2ProtocolDecoder.java       | 69 +++++++++++++++++-----
 1 file changed, 54 insertions(+), 15 deletions(-)

(limited to 'src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java')

diff --git a/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
index 68e9e8dd5..70f1b1485 100644
--- a/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Minifinder2ProtocolDecoder.java
@@ -46,6 +46,8 @@ public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
     }
 
     public static final int MSG_DATA = 0x01;
+    public static final int MSG_CONFIGURATION = 0x02;
+    public static final int MSG_SERVICES = 0x03;
     public static final int MSG_RESPONSE = 0x7F;
 
     private String decodeAlarm(int code) {
@@ -70,25 +72,44 @@ public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
         return null;
     }
 
-    @Override
-    protected Object decode(
-            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
-
-        ByteBuf buf = (ByteBuf) msg;
+    private void sendResponse(Channel channel, SocketAddress remoteAddress, int index, int type, ByteBuf buf) {
 
-        buf.readUnsignedByte(); // header
-        int flags = buf.readUnsignedByte();
-        buf.readUnsignedShortLE(); // length
-        buf.readUnsignedShortLE(); // checksum
-        int index = buf.readUnsignedShortLE();
-        int type = buf.readUnsignedByte();
+        if (channel != null) {
 
-        if (BitUtil.check(flags, 4) && channel != null) {
+            ByteBuf body = Unpooled.buffer();
+            if (type == MSG_SERVICES) {
+                while (buf.isReadable()) {
+                    int endIndex = buf.readUnsignedByte() + buf.readerIndex();
+                    int key = buf.readUnsignedByte();
+                    switch (key) {
+                        case 0x11:
+                        case 0x21:
+                        case 0x22:
+                            body.writeByte(9 + 1); // length
+                            body.writeByte(key);
+                            body.writeIntLE(0); // latitude
+                            body.writeIntLE(0); // longitude
+                            body.writeByte(0); // address
+                            break;
+                        case 0x12:
+                            body.writeByte(5); // length
+                            body.writeByte(key);
+                            body.writeIntLE((int) (System.currentTimeMillis() / 1000));
+                            break;
+                        default:
+                            break;
+                    }
+                    buf.readerIndex(endIndex);
+                }
+            } else {
+                body.writeByte(1); // key length
+                body.writeByte(0); // success
+            }
 
             ByteBuf content = Unpooled.buffer();
-            content.writeByte(MSG_RESPONSE);
-            content.writeByte(1); // key length
-            content.writeByte(0); // success
+            content.writeByte(type == MSG_SERVICES ? type : MSG_RESPONSE);
+            content.writeBytes(body);
+            body.release();
 
             ByteBuf response = Unpooled.buffer();
             response.writeByte(0xAB); // header
@@ -101,6 +122,24 @@ public class Minifinder2ProtocolDecoder extends BaseProtocolDecoder {
 
             channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
         }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.readUnsignedByte(); // header
+        int flags = buf.readUnsignedByte();
+        buf.readUnsignedShortLE(); // length
+        buf.readUnsignedShortLE(); // checksum
+        int index = buf.readUnsignedShortLE();
+        int type = buf.readUnsignedByte();
+
+        if (BitUtil.check(flags, 4)) {
+            sendResponse(channel, remoteAddress, index, type, buf);
+        }
 
         if (type == MSG_DATA) {
 
-- 
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