// ODBCDataSourceAttribute.cpp: implementation of the CODBCDataSourceAttribute class.
//
// Copyright (c) 1997-2002 Microsoft Corporation, All Rights Reserved
//
//////////////////////////////////////////////////////////////////////

#include "precomp.h"
#include "ODBCDataSourceAttribute.h"

#include "ExtendString.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CODBCDataSourceAttribute::CODBCDataSourceAttribute(CRequestObject *pObj, IWbemServices *pNamespace,
                                   IWbemContext *pCtx):CGenericClass(pObj, pNamespace, pCtx)
{

}

CODBCDataSourceAttribute::~CODBCDataSourceAttribute()
{

}

HRESULT CODBCDataSourceAttribute::CreateObject(IWbemObjectSink *pHandler, ACTIONTYPE atAction)
{
    HRESULT hr = WBEM_S_NO_ERROR;
    MSIHANDLE hView = NULL, hRecord = NULL;
    int i = -1;
    WCHAR wcBuf[BUFF_SIZE];
    WCHAR wcQuery[BUFF_SIZE];
    WCHAR wcProductCode[39];
    DWORD dwBufSize;
    bool bMatch = false;
    UINT uiStatus;

	CStringExt wcProp;

    //These will change from class to class
    bool bDriver, bAttribute;

	// safe operation
	// lenght is smaller than BUFF_SIZE ( 512 )
    wcscpy(wcQuery, L"select distinct `DataSource_`, `Attribute` from ODBCSourceAttribute");

	LPWSTR Buffer = NULL;
	LPWSTR dynBuffer = NULL;

	DWORD dwDynBuffer = 0L;

    while(!bMatch && m_pRequest->Package(++i) && (hr != WBEM_E_CALL_CANCELLED))
	{
		// safe operation:
		// Package ( i ) returns NULL ( tested above ) or valid WCHAR [39]

        wcscpy(wcProductCode, m_pRequest->Package(i));

		//Open our database
        try
		{
            if ( GetView ( &hView, wcProductCode, wcQuery, L"ODBCSourceAttribute", TRUE, FALSE ) )
			{
                uiStatus = g_fpMsiViewFetch(hView, &hRecord);

                while(!bMatch && (uiStatus != ERROR_NO_MORE_ITEMS) && (hr != WBEM_E_CALL_CANCELLED)){
                    CheckMSI(uiStatus);

                    if(FAILED(hr = SpawnAnInstance(&m_pObj))) throw hr;

                    //----------------------------------------------------
                    dwBufSize = BUFF_SIZE;
					GetBufferToPut ( hRecord, 1, dwBufSize, wcBuf, dwDynBuffer, dynBuffer, Buffer );

                    if ( Buffer && Buffer [ 0 ] != 0 )
					{
						// safe operation
                        wcProp.Copy ( L"Win32_ODBCDataSourcespecification.CheckID=\"" );
						wcProp.Append ( 3, Buffer, wcProductCode, L"\"" );
						PutKeyProperty(m_pObj, pCheck, wcProp, &bDriver, m_pRequest);

						// safe operation
                        wcProp.Copy ( L"Win32_ODBCSourceAttribute.Attribute=\"" );
						wcProp.Append ( 2, Buffer, L"\",DataSource=\"" );

						if ( dynBuffer && dynBuffer [ 0 ] != 0 )
						{
							dynBuffer [ 0 ] = 0;
						}

                        dwBufSize = BUFF_SIZE;
						GetBufferToPut ( hRecord, 2, dwBufSize, wcBuf, dwDynBuffer, dynBuffer, Buffer );

                        if( Buffer && Buffer [ 0 ] != 0 )
						{
							wcProp.Append ( 2, Buffer, L"\"" );
							PutKeyProperty(m_pObj, pSetting, wcProp, &bAttribute, m_pRequest);

							if ( dynBuffer && dynBuffer [ 0 ] != 0 )
							{
								dynBuffer [ 0 ] = 0;
							}

                        //----------------------------------------------------

                            if(bDriver && bAttribute) bMatch = true;

                            if((atAction != ACTIONTYPE_GET)  || bMatch){

                                hr = pHandler->Indicate(1, &m_pObj);
                            }
                        }
                    }

                    m_pObj->Release();
                    m_pObj = NULL;

                    g_fpMsiCloseHandle(hRecord);

                    uiStatus = g_fpMsiViewFetch(hView, &hRecord);
                }
            }
		}
		catch(...)
		{
			if ( dynBuffer )
			{
				delete [] dynBuffer;
				dynBuffer = NULL;
			}

			if (hRecord)
			g_fpMsiCloseHandle(hRecord);

			if (hView)
			{
				g_fpMsiViewClose(hView);
				g_fpMsiCloseHandle(hView);
			}

			msidata.CloseDatabase ();

			if(m_pObj)
			{
				m_pObj->Release();
				m_pObj = NULL;
			}

			throw;
		}

		if (hRecord)
		g_fpMsiCloseHandle(hRecord);

		if (hView)
		{
			g_fpMsiViewClose(hView);
			g_fpMsiCloseHandle(hView);
		}

		msidata.CloseDatabase ();
    }

    if ( dynBuffer )
	{
		delete [] dynBuffer;
		dynBuffer = NULL;
	}
	
	return hr;
}