///<summary>Get all rights for a specific principal</summary>
public UserRight[] EnumerateAccountRights(IdentityReference principal)
{
IntPtr userRights = IntPtr.Zero;
ulong count = 0;
List <UserRight> assignedUserRights = new List <UserRight>();
try
{
uint ntStatus = 0;
using (Win32SecurityIdentifier securityIdentifier = new Win32SecurityIdentifier(principal))
{
ntStatus = UnsafeNativeMethods.LsaEnumerateAccountRights(
lsaHandle,
securityIdentifier.address,
out userRights,
out count
);
}
if (ntStatus == STATUS_OBJECT_NAME_NOT_FOUND)
{
return(assignedUserRights.ToArray());
}
TestNtStatus(ntStatus);
}
catch
{
throw;
}
for (int i = 0; i < (int)count; i++)
{
LSA_UNICODE_STRING userRight = (LSA_UNICODE_STRING)Marshal.PtrToStructure(
IntPtr.Add(userRights, i * Marshal.SizeOf(typeof(LSA_UNICODE_STRING))),
typeof(LSA_UNICODE_STRING)
);
assignedUserRights.Add((UserRight)Enum.Parse(typeof(UserRight), userRight.Buffer));
}
UnsafeNativeMethods.LsaFreeMemory(userRights);
return(assignedUserRights.ToArray());
}
///<summary>Creates an instance of LSA_UNICODE_STRING</summary>
private static LSA_UNICODE_STRING ConvertToLsaUnicodeString(string value)
{
// Unicode strings max. 32KB
if (value.Length > 0x7ffe)
{
throw new ArgumentException("String value must not exceed 32KB");
}
LSA_UNICODE_STRING unicodeString = new LSA_UNICODE_STRING();
if (String.IsNullOrWhiteSpace(value))
{
return(unicodeString);
}
unicodeString.Buffer = value;
unicodeString.Length = (ushort)(value.Length * sizeof(char));
unicodeString.MaximumLength = (ushort)(unicodeString.Length + sizeof(char));
return(unicodeString);
}
///<summary>Creates an instance of the Lsa class for the specified computerName.</summary>
public Lsa(string computerName)
{
try
{
LSA_OBJECT_ATTRIBUTES lsaAttr = new LSA_OBJECT_ATTRIBUTES();
lsaAttr.Length = Marshal.SizeOf(typeof(LSA_OBJECT_ATTRIBUTES));
LSA_UNICODE_STRING computer = ConvertToLsaUnicodeString(computerName);
uint ntStatus = UnsafeNativeMethods.LsaOpenPolicy(
computer,
ref lsaAttr,
(int)LsaPolicyAccess.POLICY_ALL_ACCESS,
out lsaHandle
);
TestNtStatus(ntStatus);
}
catch
{
throw;
}
}
internal static extern uint LsaOpenPolicy(
LSA_UNICODE_STRING SystemName,
ref LSA_OBJECT_ATTRIBUTES ObjectAttributes,
int AccessMask,
out IntPtr PolicyHandle
);
internal static extern uint LsaEnumerateAccountsWithUserRight(
IntPtr PolicyHandle,
LSA_UNICODE_STRING UserRights,
out IntPtr EnumerationBuffer,
out ulong CountReturned
);
