From 3f42156b20d82b1842d1eb6b8fac68f790102b85 Mon Sep 17 00:00:00 2001
From: HolographicHat <holographichat@outlook.com>
Date: Mon, 4 Aug 2025 16:19:33 +0800
Subject: [PATCH] ReadAtLeast

---
 YaeAchievement/src/AppConfig.cs | 12 ++----------
 YaeAchievement/src/Utils.cs     | 14 +++++++++-----
 2 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/YaeAchievement/src/AppConfig.cs b/YaeAchievement/src/AppConfig.cs
index c3d254b..d6e4548 100644
--- a/YaeAchievement/src/AppConfig.cs
+++ b/YaeAchievement/src/AppConfig.cs
@@ -1,5 +1,4 @@
 using System.Diagnostics.CodeAnalysis;
-using System.Security.Cryptography;
 using System.Text;
 using System.Text.RegularExpressions;
 using Spectre.Console;
@@ -23,12 +22,7 @@ public static partial class AppConfig {
         } else {
             GamePath = ReadGamePathFromProcess();
         }
-        Span<byte> buffer = stackalloc byte[0x10000];
-        using var stream = File.OpenRead(GamePath);
-        if (stream.Read(buffer) == buffer.Length) {
-            var hash = Convert.ToHexString(MD5.HashData(buffer));
-            CacheFile.Write("genshin_impact_game_path_v2", Encoding.UTF8.GetBytes($"{GamePath}\u1145{hash}"));
-        }
+        CacheFile.Write("genshin_impact_game_path_v2", Encoding.UTF8.GetBytes($"{GamePath}\u1145{Utils.GetGameHash(GamePath)}"));
         SentrySdk.AddBreadcrumb(GamePath.EndsWith("YuanShen.exe") ? "CN" : "OS", "GamePath");
         return;
         static bool TryReadGamePathFromCache([NotNullWhen(true)] out string? path) {
@@ -38,9 +32,7 @@ public static partial class AppConfig {
                     return false;
                 }
                 var cacheData = cacheFile.Content.ToStringUtf8().Split("\u1145");
-                Span<byte> buffer = stackalloc byte[0x10000];
-                using var stream = File.OpenRead(cacheData[0]);
-                if (stream.Read(buffer) != buffer.Length || Convert.ToHexString(MD5.HashData(buffer)) != cacheData[1]) {
+                if (Utils.GetGameHash(cacheData[0]) != uint.Parse(cacheData[1])) {
                     return false;
                 }
                 path = cacheData[0];
diff --git a/YaeAchievement/src/Utils.cs b/YaeAchievement/src/Utils.cs
index 532447c..449722a 100644
--- a/YaeAchievement/src/Utils.cs
+++ b/YaeAchievement/src/Utils.cs
@@ -259,11 +259,15 @@ public static class Utils {
         AnsiConsole.WriteLine(App.GameLoading, _proc.Id);
     }
 
-    private static uint GetGameHash(string exePath) {
-        Span<byte> buffer = stackalloc byte[0x10000];
-        using var stream = File.OpenRead(exePath);
-        _ = stream.Read(buffer);
-        return Crc32.Compute(buffer);
+    public static uint GetGameHash(string exePath) {
+        try {
+            Span<byte> buffer = stackalloc byte[0x10000];
+            using var stream = File.OpenRead(exePath);
+            _ = stream.ReadAtLeast(buffer, 0x10000, false);
+            return Crc32.Compute(buffer);
+        } catch (IOException) {
+            return 0xFFFFFFFF;
+        }
     }
 
     internal static unsafe void SetQuickEditMode(bool enable) {