From a2f0d0bb1d3296c7efcdada19dcb1abe1d74e0d0 Mon Sep 17 00:00:00 2001
From: Koseng <26673978+Koseng@users.noreply.github.com>
Date: Tue, 9 Jan 2024 20:52:12 +0100
Subject: [PATCH 1/2] Hash hostname for WASM registration

---
 SimConnectMSFS/SimConnectCache.cs | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/SimConnectMSFS/SimConnectCache.cs b/SimConnectMSFS/SimConnectCache.cs
index c4b5737c7..be912810b 100644
--- a/SimConnectMSFS/SimConnectCache.cs
+++ b/SimConnectMSFS/SimConnectCache.cs
@@ -72,10 +72,11 @@ public SimConnectCache()
                 DATA_DEFINITION_ID = SIMCONNECT_DEFINE_ID.INIT_CLIENT,
                 RESPONSE_OFFSET = 0    
             };
-
+            
+            string hashMachineName = GenerateSimpleHash(Environment.MachineName, int.MaxValue).ToString();
             WasmRuntimeClientData = new WasmModuleClientData()
             {
-                NAME = $"Client_{Environment.MachineName}",
+                NAME = $"Client_{hashMachineName}",
                 AREA_SIMVAR_ID = SIMCONNECT_CLIENT_DATA_ID.RUNTIME_LVARS,
                 AREA_COMMAND_ID = SIMCONNECT_CLIENT_DATA_ID.RUNTIME_CMD,
                 AREA_RESPONSE_ID = SIMCONNECT_CLIENT_DATA_ID.RUNTIME_RESPONSE,
@@ -105,6 +106,18 @@ public void ReceiveSimConnectMessage()
                 Disconnect();
             }
         }
+        
+        private int GenerateSimpleHash(string s, int maxint)
+        {
+            // Simple hash algorithm, folding on a string, summed 4 bytes at a time 
+            long sum = 0, mul = 1;
+            for (int i = 0; i < s.Length; i++)
+            {
+                mul = (i % 4 == 0) ? 1 : mul * 256;
+                sum += (long)s[i] * mul;                              
+            }
+            return (int)(Math.Abs(sum) % maxint);
+        }
 
         private void loadEventPresets()
         {

From 32d2300d3d58c6a69810d56ce43500dfa386e24d Mon Sep 17 00:00:00 2001
From: Koseng <26673978+Koseng@users.noreply.github.com>
Date: Tue, 9 Jan 2024 22:17:47 +0100
Subject: [PATCH 2/2] Generate hash as string extension method

---
 Base/Extensions.cs                | 12 ++++++++++++
 MobiFlight/MidiBoard/MidiBoard.cs | 19 ++++---------------
 SimConnectMSFS/SimConnectCache.cs | 17 +++--------------
 3 files changed, 19 insertions(+), 29 deletions(-)

diff --git a/Base/Extensions.cs b/Base/Extensions.cs
index cf627eada..ba7fe93ca 100644
--- a/Base/Extensions.cs
+++ b/Base/Extensions.cs
@@ -70,5 +70,17 @@ public static string GetLastFolderName(this string path)
             DirectoryInfo directoryInfo = new DirectoryInfo(path);
             return directoryInfo.Name;
         }
+
+        public static int GenerateSimpleHash(this string s, int maxint)
+        {
+            // Simple hash algorithm, folding on a string, summed 4 bytes at a time 
+            long sum = 0, mul = 1;
+            for (int i = 0; i < s.Length; i++)
+            {
+                mul = (i % 4 == 0) ? 1 : mul * 256;
+                sum += (long)s[i] * mul;
+            }
+            return (int)(Math.Abs(sum) % maxint);
+        }
     }
 }
diff --git a/MobiFlight/MidiBoard/MidiBoard.cs b/MobiFlight/MidiBoard/MidiBoard.cs
index 827395e78..7b969f126 100644
--- a/MobiFlight/MidiBoard/MidiBoard.cs
+++ b/MobiFlight/MidiBoard/MidiBoard.cs
@@ -1,4 +1,5 @@
 using M;
+using MobiFlight.Base;
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
@@ -61,33 +62,21 @@ public bool HasMidiOutput
 
 
         public MidiBoard(MidiInputDevice midiInput, MidiOutputDevice midiOutput, string name, MidiBoardDefinition def)
-        {                 
+        {
             this.MidiInput = midiInput;
             this.MidiOutput = midiOutput;
             this.name = name;
             // Two boards of the same type get a different postfix to their name in windows
-            this.serial = GenerateSerial(name, int.MaxValue).ToString();
+            this.serial = name.GenerateSimpleHash(int.MaxValue).ToString();
             this.Definition = def;
             if (def != null)
             {
                 EncoderNeutral = def.EncoderNeutralPosition;
                 if (!string.IsNullOrEmpty(def.InitialLayer))
                     ActiveLayer = def.InitialLayer;
-            }            
+            }
             EncoderRightFast = EncoderNeutral + 3;
             EncoderLeftFast = EncoderNeutral - 3;
-    }
-
-        private int GenerateSerial(string s, int maxint)
-        {
-            // Simple hash algorithm, folding on a string, summed 4 bytes at a time 
-            long sum = 0, mul = 1;
-            for (int i = 0; i < s.Length; i++)
-            {
-                mul = (i % 4 == 0) ? 1 : mul * 256;
-                sum += (long)s[i] * mul;
-            }
-            return (int)(Math.Abs(sum) % maxint);
         }
 
         private void SendInputEvent(InputEventArgs inputEventArgs)
diff --git a/SimConnectMSFS/SimConnectCache.cs b/SimConnectMSFS/SimConnectCache.cs
index be912810b..a9c51e1bd 100644
--- a/SimConnectMSFS/SimConnectCache.cs
+++ b/SimConnectMSFS/SimConnectCache.cs
@@ -3,6 +3,7 @@
 using System.Runtime.InteropServices;
 using HidSharp.Utility;
 using Microsoft.FlightSimulator.SimConnect;
+using MobiFlight.Base;
 
 namespace MobiFlight.SimConnectMSFS
 {
@@ -72,8 +73,8 @@ public SimConnectCache()
                 DATA_DEFINITION_ID = SIMCONNECT_DEFINE_ID.INIT_CLIENT,
                 RESPONSE_OFFSET = 0    
             };
-            
-            string hashMachineName = GenerateSimpleHash(Environment.MachineName, int.MaxValue).ToString();
+
+            string hashMachineName = Environment.MachineName.GenerateSimpleHash(int.MaxValue).ToString();          
             WasmRuntimeClientData = new WasmModuleClientData()
             {
                 NAME = $"Client_{hashMachineName}",
@@ -106,18 +107,6 @@ public void ReceiveSimConnectMessage()
                 Disconnect();
             }
         }
-        
-        private int GenerateSimpleHash(string s, int maxint)
-        {
-            // Simple hash algorithm, folding on a string, summed 4 bytes at a time 
-            long sum = 0, mul = 1;
-            for (int i = 0; i < s.Length; i++)
-            {
-                mul = (i % 4 == 0) ? 1 : mul * 256;
-                sum += (long)s[i] * mul;                              
-            }
-            return (int)(Math.Abs(sum) % maxint);
-        }
 
         private void loadEventPresets()
         {