// *********************************************************************************
// 
//  Copyright (c) Microsoft Corporation
//  
//  Module Name:
//
//      WMI.h  
//  
//  Abstract:
//  
//      Common functionality for WMI
//
//  Author:
//  
//      Sunil G.V.N. Murali (murali.sunil@wipro.com) 22-Dec-2000
//  
//  Revision History:
//  
//      Sunil G.V.N. Murali (murali.sunil@wipro.com) 22-Dec-2000 : Created It.
//  
// *********************************************************************************

#ifndef __WMI_H
#define __WMI_H

//
// macros
//
#define SAFE_RELEASE( interfacepointer )    \
    if ( (interfacepointer) != NULL )   \
    {   \
        (interfacepointer)->Release();  \
        (interfacepointer) = NULL;  \
    }   \
    1

#define SAFE_EXECUTE( statement )               \
    hr = statement;     \
    if ( FAILED( hr ) ) \
    {   \
        _com_issue_error( hr ); \
    }   \
    1

//
// define(s) / enumerators / constants
//
#define WMI_NAMESPACE_CIMV2     L"root\\cimv2"
#define WMI_NAMESPACE_DEFAULT   L"root\\default"

#define WMI_CLAUSE_AND          L"AND"
#define WMI_CLAUSE_OR           L"OR"
#define WMI_CLAUSE_WHERE        L"WHERE"

#define CLASS_CIMV2_Win32_OperatingSystem   L"Win32_OperatingSystem"

#define WMI_REGISTRY                    L"StdRegProv"
#define WMI_REGISTRY_M_STRINGVALUE      L"GetStringValue"
#define WMI_REGISTRY_M_DWORDVALUE       L"GetDwordValue"

#define WMI_REGISTRY_IN_HDEFKEY         L"hDefKey"
#define WMI_REGISTRY_IN_SUBKEY          L"sSubKeyName"
#define WMI_REGISTRY_IN_VALUENAME       L"sValueName"
#define WMI_REGISTRY_OUT_VALUE          L"sValue"
#define WMI_REGISTRY_OUT_VALUE_DWORD    L"uValue"
#define WMI_REGISTRY_OUT_RETURNVALUE    L"ReturnValue"

#define WMI_HKEY_CLASSES_ROOT               2147483648 
#define WMI_HKEY_CURRENT_USER               2147483649
#define WMI_HKEY_LOCAL_MACHINE              2147483650
#define WMI_HKEY_USERS                      2147483651
#define WMI_HKEY_CURRENT_CONFIG             2147482652

// messages
// #define ERROR_COM_ERROR                  GetResString( IDS_ERROR_COM_ERROR )

//
// function prototype(s)
//
BOOL InitializeCom( IWbemLocator** ppLocator );
BOOL ConnectWmi( IWbemLocator* pLocator, 
                 IWbemServices** ppServices, 
                 LPCWSTR pwszServer, LPCWSTR pwszUser, LPCWSTR pwszPassword, 
                 COAUTHIDENTITY** ppAuthIdentity, 
                 BOOL bCheckWithNullPwd = FALSE, 
                 LPCWSTR pwszNamespace = WMI_NAMESPACE_CIMV2, 
                 HRESULT* phr = NULL, BOOL* pbLocalSystem = NULL );
BOOL ConnectWmiEx( IWbemLocator* pLocator, 
                   IWbemServices** ppServices, 
                   LPCWSTR pwszServer, CHString& strUserName, CHString& strPassword, 
                   COAUTHIDENTITY** ppAuthIdentity, BOOL bNeedPassword = FALSE, 
                   LPCWSTR pszNamespace = WMI_NAMESPACE_CIMV2, BOOL* pbLocalSystem = NULL );
BOOL IsValidServerEx( LPCWSTR pwszServer, BOOL& bLocalSystem );
HRESULT SetInterfaceSecurity( IUnknown* pInterface, COAUTHIDENTITY* pAuthIdentity );
VOID WINAPI WbemFreeAuthIdentity( COAUTHIDENTITY** ppAuthIdentity );
VOID WMISaveError( HRESULT hrError );
HRESULT PropertyGet( IWbemClassObject* pWmiObject, 
                     LPCWSTR pwszProperty, _variant_t& varValue );
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, 
                  CHString& strValue, LPCWSTR pwszDefault = V_NOT_AVAILABLE );
BOOL PropertyGet( IWbemClassObject* pWmiObject, 
                  LPCWSTR pwszProperty,  DWORD& dwValue, DWORD dwDefault = 0 );
BOOL PropertyGet( IWbemClassObject* pWmiObject, 
                  LPCWSTR pwszProperty,  BOOL& dwValue, BOOL bDefault = FALSE );
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty,  ULONGLONG& ullValue );
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty,  WBEMTime& wbemtime );
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty,  SYSTEMTIME& systime );
HRESULT PropertyPut( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, DWORD dwValue );
HRESULT PropertyPut( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, LPCWSTR pwszValue );
HRESULT PropertyPut( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, _variant_t& varValue );
DWORD GetTargetVersionEx( IWbemServices* pWbemServices, COAUTHIDENTITY* pAuthIdentity );
BOOL RegQueryValueWMI( IWbemServices* pWbemServices, DWORD dwHDefKey, 
                       LPCWSTR pwszSubKeyName, LPCWSTR pwszValueName, 
                       CHString& strValue, LPCWSTR pwszDefault = V_NOT_AVAILABLE );
BOOL RegQueryValueWMI( IWbemServices* pWbemServices, 
                       DWORD dwHDefKey, LPCWSTR pwszSubKeyName, 
                       LPCWSTR pwszValueName, DWORD& dwValue, DWORD dwDefault = 0 );
BOOL GetPropertyFromSafeArray( SAFEARRAY *pSafeArray, LONG lIndex, CHString& strValue,
                                VARTYPE vartype );
BOOL GetPropertyFromSafeArray( SAFEARRAY *pSafeArray, LONG lIndex, 
                                IWbemClassObject **pScriptObject, VARTYPE vartype );

//
// inline functions
//

// ***************************************************************************
// Routine Description:
//        
// Arguments:
//  
// Return Value:
// 
// ***************************************************************************
inline VOID WMISaveError( _com_error& e )
{
    WMISaveError( e.Error() );
}

#endif // __WMI_H