// // local system if systemName is null
internal LsaWrapper( string systemName )
{
LSA_OBJECT_ATTRIBUTES lsaAttr;
lsaAttr.RootDirectory = IntPtr.Zero;
lsaAttr.ObjectName = IntPtr.Zero;
lsaAttr.Attributes = 0;
lsaAttr.SecurityDescriptor = IntPtr.Zero;
lsaAttr.SecurityQualityOfService = IntPtr.Zero;
lsaAttr.Length = Marshal.SizeOf( typeof( LSA_OBJECT_ATTRIBUTES ) );
lsaHandle = IntPtr.Zero;
LSA_UNICODE_STRING[] system = null;
if( systemName != null )
{
system = new LSA_UNICODE_STRING[ 1 ];
system[ 0 ] = InitLsaString( systemName );
}
UInt32 ret = Win32Sec.LsaOpenPolicy( system, ref lsaAttr,
( Int32 )Access.POLICY_ALL_ACCESS, out lsaHandle );
if( ret == 0 )
return;
if( ret == STATUS_ACCESS_DENIED )
{
throw new UnauthorizedAccessException();
}
if( ( ret == STATUS_INSUFFICIENT_RESOURCES ) || ( ret == STATUS_NO_MEMORY ) )
{
throw new OutOfMemoryException();
}
throw new Win32Exception( Win32Sec.LsaNtStatusToWinError( ( Int32 )ret ) );
}
private static LSA_UNICODE_STRING InitLsaString( string s )
{
// Unicode strings max. 32KB
if( s.Length > 0x7ffe )
throw new ArgumentException( "String too Int64" );
LSA_UNICODE_STRING lus = new LSA_UNICODE_STRING();
lus.Buffer = s;
lus.Length = ( UInt16 )( s.Length * sizeof( char ) );
lus.MaximumLength = ( UInt16 )( lus.Length + sizeof( char ) );
return lus;
}
public void AddPrivileges( string account, string privilege )
{
IntPtr pSid = GetSIDInformation( account );
LSA_UNICODE_STRING[] privileges = new LSA_UNICODE_STRING[ 1 ];
privileges[ 0 ] = InitLsaString( privilege );
UInt32 ret = Win32Sec.LsaAddAccountRights( lsaHandle, pSid, privileges, 1 );
if( ret == 0 )
return;
if( ret == STATUS_ACCESS_DENIED )
{
throw new UnauthorizedAccessException();
}
if( ( ret == STATUS_INSUFFICIENT_RESOURCES ) || ( ret == STATUS_NO_MEMORY ) )
{
throw new OutOfMemoryException();
}
throw new Win32Exception( Win32Sec.LsaNtStatusToWinError( ( Int32 )ret ) );
}
// helper functions
private IntPtr GetSIDInformation( string account )
{
LSA_UNICODE_STRING[] names = new LSA_UNICODE_STRING[ 1 ];
LSA_TRANSLATED_SID2 lts;
IntPtr tsids = IntPtr.Zero;
IntPtr tdom = IntPtr.Zero;
names[ 0 ] = InitLsaString( account );
lts.Sid = IntPtr.Zero;
Console.WriteLine( "String account: {0}", names[ 0 ].Length );
Int32 ret = Win32Sec.LsaLookupNames2( lsaHandle, 0, 1, names, ref tdom, ref tsids );
if( ret != 0 )
throw new Win32Exception( Win32Sec.LsaNtStatusToWinError( ret ) );
lts = ( LSA_TRANSLATED_SID2 )Marshal.PtrToStructure( tsids,
typeof( LSA_TRANSLATED_SID2 ) );
Win32Sec.LsaFreeMemory( tsids );
Win32Sec.LsaFreeMemory( tdom );
return lts.Sid;
}
