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Li 2022-07-23 16:53:48 +12:00
parent f9dee24d4f
commit da1e6a2a9f
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118
UncRock/Permissions.cs Normal file
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using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
namespace UncRock
{
public static class Permissions
{
[DllImport("advapi32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool LookupPrivilegeValue(string lpsystemname, string lpname, [MarshalAs(UnmanagedType.Struct)] ref Luid lpLuid);
[DllImport("advapi32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool AdjustTokenPrivileges(IntPtr tokenhandle, [MarshalAs(UnmanagedType.Bool)] bool disableAllPrivileges, [MarshalAs(UnmanagedType.Struct)] ref TokenPrivledges newstate, uint bufferlength, IntPtr previousState, IntPtr returnlength);
internal const int SePrivledgeEnabled = 0x00000002;
internal const int ErrorNotAllAssigned = 1300;
internal const UInt32 TokenQuery = 0x0008;
internal const UInt32 TokenAdjustPrivledges = 0x0020;
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
internal static extern IntPtr GetCurrentProcess();
[DllImport("Advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool OpenProcessToken(IntPtr processHandle, uint desiredAccesss, out IntPtr tokenHandle);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern Boolean CloseHandle(IntPtr hObject);
[StructLayout(LayoutKind.Sequential)]
internal struct Luid
{
internal Int32 LowPart;
internal UInt32 HighPart;
}
[StructLayout(LayoutKind.Sequential)]
internal struct TokenPrivledges
{
internal Int32 PrivilegeCount;
internal Luid Luid;
internal Int32 Attributes;
}
public static void EnablePrivilege(string securityEntity)
{
string securityEntityValue = securityEntity;
try
{
Luid locallyUniqueIdentifier = new Luid();
if (LookupPrivilegeValue(null, securityEntityValue, ref locallyUniqueIdentifier))
{
TokenPrivledges tokenPrivledges = new TokenPrivledges();
tokenPrivledges.PrivilegeCount = 1;
tokenPrivledges.Attributes = SePrivledgeEnabled;
tokenPrivledges.Luid = locallyUniqueIdentifier;
IntPtr tokenHandle = IntPtr.Zero;
try
{
IntPtr currentProcess = GetCurrentProcess();
if (OpenProcessToken(currentProcess, TokenAdjustPrivledges | TokenQuery, out tokenHandle))
{
if (AdjustTokenPrivileges(tokenHandle, false, ref tokenPrivledges, 1024, IntPtr.Zero, IntPtr.Zero))
{
Int32 lastError = Marshal.GetLastWin32Error();
if (lastError == ErrorNotAllAssigned)
{
Win32Exception win32Exception = new Win32Exception();
throw new InvalidOperationException("AdjustTokenPrivileges fail.", win32Exception);
}
}
else
{
Win32Exception win32Exception = new Win32Exception();
throw new InvalidOperationException("AdjustTokenPrivileges fail.", win32Exception);
}
}
else
{
Win32Exception win32Exception = new Win32Exception();
string exceptionMessage = "OpenProcessToken fail. Process: " + currentProcess.ToInt32().ToString();
throw new InvalidOperationException(exceptionMessage, win32Exception);
}
}
finally
{
if (tokenHandle != IntPtr.Zero)
CloseHandle(tokenHandle);
}
}
else
{
Win32Exception win32Exception = new Win32Exception();
string exceptionMessage = "LookupPrivilegeValue failed. SecurityEntityValue: " + securityEntityValue.ToString();
throw new InvalidOperationException(exceptionMessage, win32Exception);
}
}
catch (Exception e)
{
string exceptionMessage = "GrandPrivilege failed. SecurityEntity: " + securityEntityValue.ToString();
throw new InvalidOperationException(exceptionMessage, e);
}
}
}
}