bumpers

Reviewed-on: #142

LightlessSync/LightlessSync.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <Authors></Authors>
     <Company></Company>
-    <Version>2.0.3</Version>
+    <Version>2.0.2.81</Version>
     <Description></Description>
     <Copyright></Copyright>
     <PackageProjectUrl>https://github.com/Light-Public-Syncshells/LightlessClient</PackageProjectUrl>

LightlessSync/Utils/PtrGuard.cs

@@ -5,35 +5,19 @@ namespace LightlessSync.Utils
 {
     public static partial class PtrGuard
     {
+        private const ulong _minLikelyPtr = 0x0000_0001_0000_0000UL;
+        private const ulong _maxUserPtr = 0x0000_7FFF_FFFF_FFFFUL;
         private const ulong _aligmentPtr = 0x7UL;
-        private static readonly nuint _minAppAddr = (nuint)GetMinAppAddr();
-        private static readonly nuint _maxAppAddr = (nuint)GetMaxAppAddr();
 
-        private static nint GetMinAppAddr()
+        public static bool LooksLikePtr(nint p)
         {
-            GetSystemInfo(out var si);
+            if (p == 0) return false;
-            return si.lpMinimumApplicationAddress;
+            var u = (ulong)p;
+            if (u < _minLikelyPtr) return false;
+            if (u > _maxUserPtr) return false;
+            if ((u & _aligmentPtr) != 0) return false;
+            return true;
         }
-
-        private static nint GetMaxAppAddr()
-        {
-            GetSystemInfo(out var si);
-            return si.lpMaximumApplicationAddress;
-        }
-
-            public static bool LooksLikePtr(nint p)
-            {
-                if (p == 0) return false;
-                nuint u = (nuint)p;
-
-                if (u < _minAppAddr) return false;
-                if (u > _maxAppAddr) return false;
-                if ((u & _aligmentPtr) != 0) return false;
-                if ((uint)u == 0x12345679u) return false;
-
-                return true;
-            }
-
         public static bool TryReadIntPtr(nint addr, out nint value)
         {
             value = 0;

LightlessSync/Utils/PtrGuardMemory.cs

@@ -32,24 +32,5 @@ namespace LightlessSync.Utils
 
         [DllImport("kernel32.dll")]
         internal static extern nint GetCurrentProcess();
-
-        [DllImport("kernel32.dll")]
-        internal static extern void GetSystemInfo(out SYSTEM_INFO lpSystemInfo);
-
-        [StructLayout(LayoutKind.Sequential)]
-        internal struct SYSTEM_INFO
-        {
-            public ushort wProcessorArchitecture;
-            public ushort wReserved;
-            public uint dwPageSize;
-            public nint lpMinimumApplicationAddress;
-            public nint lpMaximumApplicationAddress;
-            public nint dwActiveProcessorMask;
-            public uint dwNumberOfProcessors;
-            public uint dwProcessorType;
-            public uint dwAllocationGranularity;
-            public ushort wProcessorLevel;
-            public ushort wProcessorRevision;
-        }
     }
 }