private static string GetLocationImpl(IAssemblyCache assemblyCache, string strongName, string targetProcessorArchitecture)
{
ASSEMBLY_INFO pAsmInfo = new ASSEMBLY_INFO
{
cbAssemblyInfo = (uint)Marshal.SizeOf(typeof(ASSEMBLY_INFO))
};
if (targetProcessorArchitecture != null)
{
strongName = strongName + ", ProcessorArchitecture=" + targetProcessorArchitecture;
}
int hr = assemblyCache.QueryAssemblyInfo((uint)AssemblyCacheEnum.QUERYASMINFO_FLAG_VALIDATE, strongName, ref pAsmInfo);
if ((Win32NTMethods.Failed(hr) && (hr != Win32NTMethods.E_INSUFFICIENT_BUFFER)) || (pAsmInfo.cbAssemblyInfo == 0))
{
return(string.Empty);
}
pAsmInfo.pszCurrentAssemblyPathBuf = new string(new char[pAsmInfo.cchBuf]);
return(!Win32NTMethods.Failed(assemblyCache.QueryAssemblyInfo(3, strongName, ref pAsmInfo)) ? pAsmInfo.pszCurrentAssemblyPathBuf : string.Empty);
}
public static string GetLocation(string strongName)
{
string location = strongName ?? throw new ArgumentNullException(nameof(strongName));
if (IsStrongName(strongName))
{
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
IAssemblyCache cache;
AssemblyName name = null;
try
{
name = new AssemblyName(strongName);
}
catch (FileLoadException)
{
return(location);
}
if (!Win32NTMethods.Failed(Win32NTMethods.CreateAssemblyCache(out cache, 0)) && (cache != null))
{
try
{
if (name.ProcessorArchitecture != ProcessorArchitecture.None)
{
location = GetLocationImpl(cache, strongName, null);
}
else
{
string targetProcessorArchitecture = Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE");
if (!string.IsNullOrEmpty(targetProcessorArchitecture))
{
location = GetLocationImpl(cache, strongName, targetProcessorArchitecture);
}
if (string.IsNullOrEmpty(location))
{ // let's try the MSIL Architecture
location = GetLocationImpl(cache, strongName, "MSIL");
if ((location == null) || (location.Length <= 0))
{
location = GetLocationImpl(cache, strongName, null);
}
}
}
}
finally
{
Marshal.FinalReleaseComObject(cache);
}
}
else
{
if (string.IsNullOrWhiteSpace(location) && string.Equals(Path.GetExtension(strongName), ".dll", StringComparison.OrdinalIgnoreCase))
{
location = GetLocation(Path.ChangeExtension(strongName, null));
}
}
return(location);
}
else
{
throw new PlatformNotSupportedException();
}
}
return(location);
}
