private static NativeMethodProvider.GENERIC_MAPPING GenericMapping(string mapping)
{
NativeMethodProvider.GENERIC_MAPPING result = default(NativeMethodProvider.GENERIC_MAPPING);
if (mapping.Length > 0)
{
string[] array = mapping.Split(new char[]
{
','
});
if (array.Length != 4)
{
throw new ArgumentException();
}
result.GenericRead = Convert.ToUInt32(array[0], 16);
result.GenericWrite = Convert.ToUInt32(array[1], 16);
result.GenericExecute = Convert.ToUInt32(array[2], 16);
result.GenericAll = Convert.ToUInt32(array[3], 16);
}
else
{
result.GenericRead = 2147483648U;
result.GenericWrite = 1073741824U;
result.GenericExecute = 536870912U;
result.GenericAll = 268435456U;
}
return(result);
}
public uint GetAccessCheck(byte[] ntsd, string listString)
{
uint desiredAccess = 33554432U;
NativeMethodProvider.GENERIC_MAPPING genericMapping = NativeMethodProvider.GenericMapping(string.Empty);
NativeMethodProvider.OBJECT_TYPE_LIST[] list = NativeMethodProvider.ObjectTypeList(string.Empty);
return(this.AccessCheck(desiredAccess, ntsd, genericMapping, list));
}
private uint AccessCheck(uint desiredAccess, byte[] ntsd, NativeMethodProvider.GENERIC_MAPPING genericMapping, NativeMethodProvider.OBJECT_TYPE_LIST[] list)
{
uint result = 0U;
int num = 0;
IntPtr intPtr = IntPtr.Zero;
IntPtr intPtr2 = IntPtr.Zero;
IntPtr intPtr3 = IntPtr.Zero;
bool flag = false;
try
{
intPtr2 = Marshal.AllocHGlobal(1024);
int num2 = 1024;
NativeMethodProvider.MapGenericMask(ref desiredAccess, ref genericMapping);
if (!NativeMethodProvider.ImpersonateSelf(2))
{
int lastWin32Error = Marshal.GetLastWin32Error();
throw new Win32Exception(lastWin32Error);
}
flag = true;
intPtr = this.GetTokenHandle();
intPtr3 = NativeMethodProvider.OBJECT_TYPE_LIST.NativeStruct(list);
if (!NativeMethodProvider.AccessCheckByType(ntsd, IntPtr.Zero, intPtr, desiredAccess, intPtr3, list.Length, ref genericMapping, intPtr2, ref num2, ref result, ref num))
{
int lastWin32Error = Marshal.GetLastWin32Error();
SetupLogger.LogError(new Win32Exception(lastWin32Error));
}
}
finally
{
if (intPtr3 != IntPtr.Zero)
{
Marshal.FreeHGlobal(intPtr3);
}
if (intPtr != IntPtr.Zero)
{
NativeMethodProvider.CloseHandle(intPtr);
}
if (intPtr2 != IntPtr.Zero)
{
Marshal.FreeHGlobal(intPtr2);
}
if (flag)
{
NativeMethodProvider.RevertToSelf();
}
}
return(result);
}
private static extern bool AccessCheckByType([MarshalAs(UnmanagedType.LPArray)] byte[] pSecurityDescriptor, IntPtr principalSelfSid, IntPtr clientToken, uint DesiredAccess, IntPtr objectTypeList, int ObjectTypeListLength, ref NativeMethodProvider.GENERIC_MAPPING GenericMapping, IntPtr PrivilegeSet, ref int PrivilegeSetLength, ref uint GrantedAccess, ref int AccessStatus);
private static extern void MapGenericMask(ref uint accessMask, ref NativeMethodProvider.GENERIC_MAPPING genericMapping);