private static LuidAndAttributes[] GetTokenPrivileges(AccessTokenHandle accessTokenHandle)
{
int tokenInformationLength = 0;
int returnLength = 0;
if (NativeMethods.GetTokenInformation(
accessTokenHandle,
TokenInformationClass.TokenPrivileges,
IntPtr.Zero,
tokenInformationLength,
ref returnLength))
{
return(new LuidAndAttributes[0]);
}
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error != NativeMethods.ErrorInsufficientBuffer)
{
throw new Win32Exception(lastWin32Error);
}
tokenInformationLength = returnLength;
returnLength = 0;
using (AllocatedMemory allocatedMemory = new AllocatedMemory(tokenInformationLength))
{
if (!NativeMethods.GetTokenInformation(
accessTokenHandle,
TokenInformationClass.TokenPrivileges,
allocatedMemory.Pointer,
tokenInformationLength,
ref returnLength))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
int privilegeCount = Marshal.ReadInt32(allocatedMemory.Pointer);
LuidAndAttributes[] luidAndAttributes = new LuidAndAttributes[privilegeCount];
long pointer = allocatedMemory.Pointer.ToInt64() + Marshal.SizeOf(privilegeCount);
Type type = typeof(LuidAndAttributes);
long size = Marshal.SizeOf(type);
for (int i = 0; i < privilegeCount; i++)
{
luidAndAttributes[i] = (LuidAndAttributes)Marshal.PtrToStructure(new IntPtr(pointer), type);
pointer += size;
}
return(luidAndAttributes);
}
}
internal static PrivilegeAndAttributesCollection GetPrivileges(AccessTokenHandle accessTokenHandle)
{
LuidAndAttributes[] luidAndAttributesArray = GetTokenPrivileges(accessTokenHandle);
int length = luidAndAttributesArray.Length;
List <PrivilegeAndAttributes> privilegeAndAttributes = new List <PrivilegeAndAttributes>(length);
for (int i = 0; i < length; i++)
{
LuidAndAttributes luidAndAttributes = luidAndAttributesArray[i];
string name = GetPrivilegeName(luidAndAttributes.Luid);
if (privilegesDictionary.ContainsKey(name))
{
privilegeAndAttributes.Add(new PrivilegeAndAttributes(
privilegesDictionary[name],
luidAndAttributes.Attributes));
}
}
return(new PrivilegeAndAttributesCollection(privilegeAndAttributes));
}