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$source = @"
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
public class FusionAPi
{
[ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("21b8916c-f28e-11d2-a473-00c04f8ef448")]
internal interface IAssemblyEnum
{
[PreserveSig]
int GetNextAssembly(IntPtr pvReserved, out IAssemblyName ppName, int flags);
int Reset();
int Clone(out IAssemblyEnum ppEnum);
}
[ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("CD193BC0-B4BC-11d2-9833-00C04FC31D2E")]
internal interface IAssemblyName
{
int SetProperty(int PropertyId, IntPtr pvProperty, int cbProperty);
int GetProperty(int PropertyId, IntPtr pvProperty, ref int pcbProperty);
int Finalize();
[PreserveSig]
int GetDisplayName(StringBuilder pDisplayName, ref int pccDisplayName, int displayFlags);
int Reserved(ref Guid guid, Object obj1, Object obj2, String string1, Int64 llFlags, IntPtr pvReserved, int cbReserved, out IntPtr ppv);
[PreserveSig]
int GetName(ref int pccBuffer, StringBuilder pwzName);
int GetVersion(out int versionHi, out int versionLow);
int IsEqual(IAssemblyName pAsmName, int cmpFlags);
int Clone(out IAssemblyName pAsmName);
}
[UnmanagedFunctionPointer(CallingConvention.Winapi, CharSet = CharSet.Unicode)]
private delegate int CreateAssemblyEnumDelegate(out IAssemblyEnum ppEnum, IntPtr pUnkReserved, IAssemblyName pName, int flags, IntPtr pvReserved);
[DllImport("kernel32.dll", SetLastError=true)]
private static extern IntPtr LoadLibrary(string lpFileName);
[DllImport("kernel32.dll", SetLastError=true)]
private static extern IntPtr GetProcAddress(IntPtr hModule, [MarshalAs(UnmanagedType.LPStr)] string procName);
[DllImport("kernel32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool FreeLibrary(IntPtr hModule);
public static List<string> GetGacAssemblies()
{
RegistryKey regKeyNetFx = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\.NETFramework", false);
string installRoot = Path.Combine(regKeyNetFx.GetValue("InstallRoot").ToString(), "v4.0.30319");
string fusionDllPath = Path.Combine(installRoot, "fusion.dll");
IntPtr hModule = LoadLibrary(fusionDllPath);
if (hModule == IntPtr.Zero)
{
throw new Win32Exception(fusionDllPath);
}
List<string> result = new List<string>();
try
{
if (hModule != IntPtr.Zero)
{
const string procName = "CreateAssemblyEnum";
IntPtr pfnCreateAssemblyEnum = GetProcAddress(hModule, procName);
if (pfnCreateAssemblyEnum == IntPtr.Zero)
{
throw new Win32Exception(procName);
}
var d = (CreateAssemblyEnumDelegate)Marshal.GetDelegateForFunctionPointer(pfnCreateAssemblyEnum, typeof(CreateAssemblyEnumDelegate));
IAssemblyEnum assemblyEnum = null;
int hr = d(out assemblyEnum, IntPtr.Zero, null, 2 /* AssemblyCacheFalgs.Gac */, IntPtr.Zero);
if (hr < 0)
{
Marshal.ThrowExceptionForHR(hr);
}
IAssemblyName assemblyName = null;
while (assemblyEnum.GetNextAssembly(IntPtr.Zero, out assemblyName, 0) >= 0 && assemblyName != null)
{
// ASM_DISPLAYF_VERSION | ASM_DISPLAYF_CULTURE | ASM_DISPLAYF_PUBLIC_KEY_TOKEN | ASM_DISPLAYF_PROCESSORARCHITECTURE | ASM_DISPLAYF_RETARGET
const int displayFlag = 0xA7;
int bufferSize = 0;
StringBuilder buffer = null;
assemblyName.GetDisplayName(buffer, ref bufferSize, displayFlag);
buffer = new StringBuilder(bufferSize);
assemblyName.GetDisplayName(buffer, ref bufferSize, displayFlag);
result.Add(buffer.ToString());
}
}
}
finally
{
FreeLibrary(hModule);
}
return result;
}
}
"@
Add-Type -Language CSharp -TypeDefinition $source
[FusionApi]::GetGacAssemblies()
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