Abstract NamedPipes code for windows

c_sharp/NSSCSWrapper/NativeCalls.cs

@@ -216,7 +216,7 @@ namespace Novell.CASA
 			[In]		uint	 				ssFlags, 				// IN
 			[In]		SSCS_SECRET_ID_T		appSecretID, 
 			[In]		SSCS_SECRET_ID_T		sharedSecretID, 						 
-			int									credentialType,			// IN
+			[In, Out]   ref uint				credentialType,			// IN
 			[In, Out]	IntPtr					pCredential,		
 			[In, Out]	SSCS_EXT_T				ext
 			);
@@ -1038,6 +1038,7 @@ namespace Novell.CASA
 				throw new miCasaException(miCasaException.NSSCS_E_INVALID_PARAM);
 
 			int rcode;
+			uint credType = 0;
 			BasicCredential bc = null;
 
 			SSCS_SECRET_ID_T appSecretID = new SSCS_SECRET_ID_T();
@@ -1059,15 +1060,23 @@ namespace Novell.CASA
 			IntPtr pCredential = Marshal.AllocHGlobal(Marshal.SizeOf(credential));			
 			Marshal.StructureToPtr(credential, pCredential, false);
 			
-			rcode = miCASAGetCredential(
+			try 
-				ssFlags,
+			{
-				appSecretID,
+				rcode = miCASAGetCredential(
-				sharedID,
+					ssFlags,
-				0,
+					appSecretID,
-				pCredential,
+					sharedID,
-				new SSCS_EXT_T()
+					ref credType,
-				);
+					pCredential,
-             
+					new SSCS_EXT_T()
+					);
+			}
+			catch (Exception e)
+			{
+				Console.WriteLine(e.ToString());
+				Marshal.FreeHGlobal(pCredential);
+				throw new miCasaException(-803);
+			}
 
 			if (rcode == 0)
 			{