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-Add support for wide range of sranipal runtime versions #12

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9b56214
-Add support for wide range of sranipal runtime versions
click4dylan Dec 15, 2025
96a4e7f
-Removed temporary debug module guid
click4dylan Dec 15, 2025
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147 changes: 147 additions & 0 deletions SRanipalExtTrackingModule/PatternScanner.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,147 @@
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using VRCFaceTracking;

namespace SRanipalExtTrackingModule
{
internal class PatternScanner
{
public static IntPtr Scan(IntPtr hProcess, ProcessModule module, string pattern)
{
byte[] patternBytes = ParsePattern(pattern);

IntPtr start = module.BaseAddress;
IntPtr end = start + module.ModuleMemorySize;

IntPtr current = start;

while (current.ToInt64() < end.ToInt64())
{
if (VirtualQueryEx(hProcess, current, out MEMORY_BASIC_INFORMATION mbi, (IntPtr)Marshal.SizeOf<MEMORY_BASIC_INFORMATION>()) == IntPtr.Zero)
{
#if DEBUG
int error = Marshal.GetLastWin32Error();
Console.WriteLine($"VirtualQueryEx failed. Error = {error}");
#endif
break;
}

bool readable =
mbi.State == MEM_COMMIT &&
(mbi.Protect & PAGE_GUARD) == 0 &&
(mbi.Protect & PAGE_NOACCESS) == 0;

if (readable)
{
int size = (int)Math.Min(
mbi.RegionSize.ToInt64(),
end.ToInt64() - current.ToInt64()
);

byte[] buffer = new byte[size];
int bytesRead = 0;

if (Utils.ReadProcessMemory(
(int)hProcess,
mbi.BaseAddress,
buffer,
size,
ref bytesRead) && bytesRead > 0)
{
IntPtr match = ScanBuffer(
buffer,
bytesRead,
patternBytes,
mbi.BaseAddress
);

if (match != IntPtr.Zero)
return match;
}
}

current = mbi.BaseAddress + mbi.RegionSize;
}

return IntPtr.Zero;
}

private static IntPtr ScanBuffer(
byte[] buffer,
int length,
byte[] pattern,
IntPtr baseAddress)
{
for (int i = 0; i <= length - pattern.Length; i++)
{
bool found = true;

for (int j = 0; j < pattern.Length; j++)
{
if (pattern[j] == 0xCC)
continue;

if (buffer[i + j] != pattern[j])
{
found = false;
break;
}
}

if (found)
return baseAddress + i;
}

return IntPtr.Zero;
}

private static byte[] ParsePattern(string pattern)
{
string[] tokens = pattern.Split(' ');
byte[] bytes = new byte[tokens.Length];

for (int i = 0; i < tokens.Length; i++)
{
bytes[i] = (tokens[i] == "?" || tokens[i] == "??")
? (byte)0xCC
: Convert.ToByte(tokens[i], 16);
}

return bytes;
}

#region WinAPI

private const uint MEM_COMMIT = 0x1000;
private const uint PAGE_NOACCESS = 0x01;
private const uint PAGE_GUARD = 0x100;

[StructLayout(LayoutKind.Sequential)]
private struct MEMORY_BASIC_INFORMATION
{
public IntPtr BaseAddress;
public IntPtr AllocationBase;
public uint AllocationProtect;
public IntPtr RegionSize;
public uint State;
public uint Protect;
public uint Type;
}

[DllImport("kernel32.dll", SetLastError = true)]
private static extern IntPtr VirtualQueryEx(
IntPtr hProcess,
IntPtr lpAddress,
out MEMORY_BASIC_INFORMATION lpBuffer,
IntPtr dwLength
);

#endregion
}
}
67 changes: 52 additions & 15 deletions SRanipalExtTrackingModule/SRanipalTrackingInterface.cs
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Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
using Microsoft.Extensions.Logging;
using Microsoft.Win32;
using SRanipalExtTrackingModule;
using System;
using System.Diagnostics;
using System.Drawing;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using ViveSR;
using ViveSR.anipal;
using ViveSR.anipal.Eye;
Expand Down Expand Up @@ -41,7 +44,7 @@ private static bool Attach()
if (processes.Length <= 0) return false;
_process = processes[0];
_processHandle =
Utils.OpenProcess(Utils.PROCESS_VM_READ,
Utils.OpenProcess(0x0410,//Utils.PROCESS_VM_READ | Utils.PROCESS_QUERY_INFORMATION,
false, _process.Id);
return true;
}
Expand Down Expand Up @@ -131,25 +134,59 @@ public override (bool eyeSuccess, bool expressionSuccess) Initialize(bool eyeAva

if (found)
{
_offset = 0;
UnifiedTracking.EyeImageData.SupportsImage = false;

// Find the EyeCameraDevice.dll module inside sr_runtime, get it's offset and add hex 19190 to it for the image stream.
foreach (ProcessModule module in _process.Modules)
if (module.ModuleName == "EyeCameraDevice.dll")
{
_offset = module.BaseAddress;

switch (_process.MainModule?.FileVersionInfo.FileVersion)
#if DEBUG
Logger.LogInformation($"SRanipalExtTrackingModule: found EyeCameraDevice.dll");
#endif
// Try to pattern scan first..
IntPtr functionAddress = PatternScanner.Scan(_processHandle, module, "48 89 54 24 10 48 89 4C 24 08 56 57 48 ? ? ? 48 ? ? ? ? FF");
if (functionAddress != IntPtr.Zero)
{
case "1.3.2.0":
_offset += 0x19190;
#if DEBUG
Logger.LogInformation($"SRanipalExtTrackingModule: found eye image binary pattern");
#endif
IntPtr leaAddress = functionAddress + 0x93;
IntPtr nextInstAddress = leaAddress + 0x7;
byte[] buffer = new byte[4];
int bytesRead = 0;
if (Utils.ReadProcessMemory((int)_processHandle, leaAddress + 3, buffer, buffer.Length, ref bytesRead) && bytesRead == 4)
{
int displacement = BitConverter.ToInt32(buffer, 0);
_offset = nextInstAddress + displacement;
UnifiedTracking.EyeImageData.SupportsImage = true;
break;
case "1.3.1.1":
_offset += 0x19100;
UnifiedTracking.EyeImageData.SupportsImage = true;
break;
default:
UnifiedTracking.EyeImageData.SupportsImage = false;
break;
}
else
{
#if DEBUG
Logger.LogInformation($"SRanipalExtTrackingModule: failed to read memory");
#endif
}
}

if (!UnifiedTracking.EyeImageData.SupportsImage)
{
_offset = module.BaseAddress;

switch (_process.MainModule?.FileVersionInfo.FileVersion)
{
case "1.3.2.0":
_offset += 0x19190;
UnifiedTracking.EyeImageData.SupportsImage = true;
break;
case "1.3.1.1":
_offset += 0x19100;
UnifiedTracking.EyeImageData.SupportsImage = true;
break;
default:
UnifiedTracking.EyeImageData.SupportsImage = false;
break;
}
}
}

Expand Down