From 10a70cfe93d0d1ef080a3069863c8ca1f303e441 Mon Sep 17 00:00:00 2001
From: DaXcess <daxcess@daxcess.io>
Date: Thu, 31 Oct 2024 15:47:04 +0100
Subject: [PATCH] 1.3.6 beginnings - Added remote assembly hash startup
 functionality

---
 CHANGELOG.md     |  6 ++++++
 LCVR.csproj      |  2 +-
 Source/Plugin.cs | 20 +++++++++++++++++++-
 Source/Utils.cs  | 14 ++++++++++++++
 4 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f33c8fd..372c8b9c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 1.3.6
+
+**Additions**:
+- Added support for V67
+- Added startup functionality that fetches game versions from a remote resource, allowing easier LCVR compatibility updates with less downtime
+
 # 1.3.5
 
 **Additions**:
diff --git a/LCVR.csproj b/LCVR.csproj
index f414707f..bd66b01f 100644
--- a/LCVR.csproj
+++ b/LCVR.csproj
@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.1</TargetFramework>
     <AssemblyName>LCVR</AssemblyName>
     <Description>Collecting Scrap in VR</Description>
-    <Version>1.3.5</Version>
+    <Version>1.3.6</Version>
     <Authors>DaXcess</Authors>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <LangVersion>12.0</LangVersion>
diff --git a/Source/Plugin.cs b/Source/Plugin.cs
index e0cd5c3c..d0b20142 100644
--- a/Source/Plugin.cs
+++ b/Source/Plugin.cs
@@ -6,6 +6,7 @@
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Net;
 using System.Reflection;
 using UnityEngine;
 using UnityEngine.InputSystem;
@@ -25,7 +26,7 @@ public class Plugin : BaseUnityPlugin
 {
     public const string PLUGIN_GUID = "io.daxcess.lcvr";
     public const string PLUGIN_NAME = "LCVR";
-    public const string PLUGIN_VERSION = "1.3.5";
+    public const string PLUGIN_VERSION = "1.3.6";
 
 #if DEBUG
     private const string SKIP_CHECKSUM_VAR = $"--lcvr-skip-checksum={PLUGIN_VERSION}-dev";
@@ -33,11 +34,14 @@ public class Plugin : BaseUnityPlugin
     private const string SKIP_CHECKSUM_VAR = $"--lcvr-skip-checksum={PLUGIN_VERSION}";
 #endif
     
+    private const string HASHES_OVERRIDE_URL = "https://gist.githubusercontent.com/DaXcess/72c4fbac0f18c76ebc99e6b769f19389/raw/e65b6d68c37244b1909e9d6aa992ae39d9a34922/LCVR%2520Game%2520Hashes";
+
     private readonly string[] GAME_ASSEMBLY_HASHES =
     [
         "BFF45683C267F402429049EF7D8095C078D5CD534E5300E56317ACB6056D70FB", // V64
         "A6BDE2EB39028B36CB1667DCFB4ED10F688FB3FF72E71491AC25C5CB47A7EF6C", // V64.1
         "B0BC7D3392FDAD3BB6515C0769363A51FF3599E67325FAE153948E0B82EB7596", // V66
+        "TBD", // V67
     ];
 
     public new static Config Config { get; private set; }
@@ -163,6 +167,20 @@ private bool VerifyGameVersion()
         var location = Path.Combine(Paths.ManagedPath, "Assembly-CSharp.dll");
         var hash = BitConverter.ToString(Utils.ComputeHash(File.ReadAllBytes(location))).Replace("-", "");
 
+        // Attempt to fetch a gist with known working assembly hashes
+        // This allows me to keep LCVR up and running if the game updates, without code changes
+        try
+        {
+            var contents = new WebClient().DownloadString(HASHES_OVERRIDE_URL);
+            var hashes = Utils.ParseConfig(contents);
+
+            return hashes.Contains(hash);
+        }
+        catch
+        {
+            // If anything fails, fall back to local lookup
+        }
+        
         return GAME_ASSEMBLY_HASHES.Contains(hash);
     }
 
diff --git a/Source/Utils.cs b/Source/Utils.cs
index 437b9094..1a9719ed 100644
--- a/Source/Utils.cs
+++ b/Source/Utils.cs
@@ -10,6 +10,7 @@
 using System.Text;
 using System;
 using System.Collections;
+using System.Linq;
 using GameNetcodeStuff;
 
 namespace LCVR;
@@ -31,6 +32,19 @@ public static byte[] ComputeHash(byte[] input)
         return sha.ComputeHash(input);
     }
 
+    public static string[] ParseConfig(string content)
+    {
+        var lines = content.Split("\n", StringSplitOptions.RemoveEmptyEntries);
+
+        return (from line in lines
+            where !line.TrimStart().StartsWith("#")
+            let commentIndex = line.IndexOf('#')
+            select commentIndex >= 0 ? line[..commentIndex].Trim() : line.Trim()
+            into parsedLine
+            where !string.IsNullOrEmpty(parsedLine)
+            select parsedLine).ToArray();
+    }
+
     public static string FormatPascalAndAcronym(string input)
     {
         var builder = new StringBuilder(input[0].ToString());