windows-nt/Source/XPSP1/NT/base/cluster/mgmt/cluscfg/middletier/enumipaddresses.cpp

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2020-09-26 03:20:57 -05:00
//////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2001 Microsoft Corporation
//
// Module Name:
// EnumIPAddresses.cpp
//
// Description:
// CEnumIPAddress implementation.
//
// Maintained By:
// Galen Barbee (GalenB) 24-MAY-2000
//
//////////////////////////////////////////////////////////////////////////////
#include "pch.h"
#include "IPAddressInfo.h"
#include "EnumIPAddresses.h"
DEFINE_THISCLASS("CEnumIPAddresses")
// ************************************************************************
//
// Constructor / Destructor
//
// ************************************************************************
//////////////////////////////////////////////////////////////////////////////
//
// HRESULT
// CEnumIPAddresses::S_HrCreateInstance(
// IUnknown ** ppunkOut
// )
//
//////////////////////////////////////////////////////////////////////////////
HRESULT
CEnumIPAddresses::S_HrCreateInstance(
IUnknown ** ppunkOut
)
{
TraceFunc( "" );
Assert( ppunkOut != NULL );
HRESULT hr;
CEnumIPAddresses * pemn = new CEnumIPAddresses;
if ( pemn != NULL )
{
hr = THR( pemn->Init( ) );
if ( SUCCEEDED( hr ) )
{
hr = THR( pemn->TypeSafeQI( IUnknown, ppunkOut ) );
}
pemn->Release( );
}
else
{
hr = E_OUTOFMEMORY;
}
HRETURN( hr );
} // S_HrCreateInstance( )
//////////////////////////////////////////////////////////////////////////////
//
// CEnumIPAddresses::CEnumIPAddresses( void )
//
//////////////////////////////////////////////////////////////////////////////
CEnumIPAddresses::CEnumIPAddresses( void )
{
TraceFunc( "" );
InterlockedIncrement( &g_cObjects );
TraceFuncExit();
} // CEnumIPAddresses( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::Init( void )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::Init( void )
{
TraceFunc( "" );
HRESULT hr = S_OK;
// IUnknown stuff
Assert( m_cRef == 0 );
AddRef( ); // Add one count
// IEnumClusCfgIPAddresses
HRETURN( hr );
} // Init( )
//////////////////////////////////////////////////////////////////////////////
//
// CEnumIPAddresses::~CEnumIPAddresses( )
//
//////////////////////////////////////////////////////////////////////////////
CEnumIPAddresses::~CEnumIPAddresses( )
{
TraceFunc( "" );
if ( m_pList != NULL )
{
while ( m_cAlloced != 0 )
{
m_cAlloced --;
(m_pList[ m_cAlloced ])->Release( );
}
}
InterlockedDecrement( &g_cObjects );
TraceFuncExit();
} // ~CEnumIPAddresses( )
// ************************************************************************
//
// IUnknown
//
// ************************************************************************
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::QueryInterface(
// REFIID riid,
// LPVOID *ppv
// )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::QueryInterface(
REFIID riid,
LPVOID *ppv
)
{
TraceQIFunc( riid, ppv );
HRESULT hr = E_NOINTERFACE;
if ( IsEqualIID( riid, IID_IUnknown ) )
{
*ppv = static_cast< IEnumClusCfgIPAddresses * >( this );
hr = S_OK;
} // if: IUnknown
else if ( IsEqualIID( riid, IID_IEnumClusCfgIPAddresses ) )
{
*ppv = TraceInterface( __THISCLASS__, IEnumClusCfgIPAddresses, this, 0 );
hr = S_OK;
} // else if: IEnumClusCfgIPAddresses
else if ( IsEqualIID( riid, IID_IExtendObjectManager ) )
{
*ppv = TraceInterface( __THISCLASS__, IExtendObjectManager, this, 0 );
hr = S_OK;
} // else if: IExtendObjectManager
if ( SUCCEEDED( hr ) )
{
((IUnknown*) *ppv)->AddRef( );
} // if: success
QIRETURN_IGNORESTDMARSHALLING( hr, riid );
} // QueryInterface( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP_(ULONG)
// CEnumIPAddresses::AddRef( void )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_(ULONG)
CEnumIPAddresses::AddRef( void )
{
TraceFunc( "[IUnknown]" );
InterlockedIncrement( &m_cRef );
RETURN( m_cRef );
} // AddRef( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP_(ULONG)
// CEnumIPAddresses::Release( void )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_(ULONG)
CEnumIPAddresses::Release( void )
{
TraceFunc( "[IUnknown]" );
InterlockedDecrement( &m_cRef );
if ( m_cRef )
RETURN( m_cRef );
TraceDo( delete this );
RETURN(0);
} // Release( )
// ************************************************************************
//
// IExtendObjectManager
//
// ************************************************************************
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::FindObject(
// OBJECTCOOKIE cookieIn
// , REFCLSID rclsidTypeIn
// , LPCWSTR pcszNameIn
// , LPUNKNOWN * punkOut
// )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::FindObject(
OBJECTCOOKIE cookieIn
, REFCLSID rclsidTypeIn
, LPCWSTR pcszNameIn
, LPUNKNOWN * ppunkOut
)
{
TraceFunc( "[IExtendObjectManager]" );
OBJECTCOOKIE cookie;
OBJECTCOOKIE cookieParent;
IServiceProvider * psp;
HRESULT hr = E_UNEXPECTED;
IObjectManager * pom = NULL;
IStandardInfo * psi = NULL;
IEnumCookies * pec = NULL;
DWORD cookieCount = 0;
//
// Check arguments
//
if ( cookieIn == 0 )
goto InvalidArg;
if ( rclsidTypeIn != CLSID_IPAddressType )
goto InvalidType;
if ( ppunkOut == NULL )
goto InvalidPointer;
AssertMsg( pcszNameIn == NULL, "Enums shouldn't have names." );
//
// Grab the object manager.
//
hr = THR( CoCreateInstance( CLSID_ServiceManager,
NULL,
CLSCTX_INPROC_SERVER,
TypeSafeParams( IServiceProvider, &psp )
) );
if ( FAILED( hr ) )
goto Cleanup;
hr = THR( psp->TypeSafeQS( CLSID_ObjectManager,
IObjectManager,
&pom
) );
psp->Release( ); // release promptly
if ( FAILED( hr ) )
goto Cleanup;
//
// Ask the Object Manager for information about our cookie so we can
// get to the "parent" cookie.
//
hr = THR( pom->GetObject( DFGUID_StandardInfo,
cookieIn,
reinterpret_cast< IUnknown ** >( &psi )
) );
if ( FAILED( hr ) )
goto Cleanup;
hr = STHR( psi->GetParent( &cookieParent ) );
if ( FAILED( hr ) )
goto Cleanup;
//
// Now ask the Object Manager for a cookie enumerator.
//
hr = THR( pom->FindObject( CLSID_IPAddressType,
cookieParent,
NULL,
DFGUID_EnumCookies,
NULL,
reinterpret_cast< IUnknown ** >( &pec )
) );
if ( FAILED( hr ) )
goto Cleanup;
pec = TraceInterface( L"CEnumIPAddresses!IEnumCookies", IEnumCookies, pec, 1 );
//
// Ask the enumerator how many cookies it has.
//
hr = THR( pec->Count( &cookieCount ) );
if ( FAILED( hr ) )
goto Cleanup;
m_cAlloced = cookieCount;
if ( m_cAlloced == 0 )
goto ErrorNotFound;
//
// Allocate a buffer to store the punks.
//
m_pList = (IClusCfgIPAddressInfo **) TraceAlloc( HEAP_ZERO_MEMORY, m_cAlloced * sizeof(IClusCfgIPAddressInfo *) );
if ( m_pList == NULL )
goto OutOfMemory;
//
// Reset the enumerator.
//
hr = THR( pec->Reset( ) );
if ( FAILED( hr ) )
goto Cleanup;
//
// Now loop thru to collect the interfaces.
//
m_cIter = 0;
while ( hr == S_OK && m_cIter < m_cAlloced )
{
hr = STHR( pec->Next( 1, &cookie, NULL ) );
if ( FAILED( hr ) )
goto Cleanup;
if ( hr == S_FALSE )
break; // exit condition
hr = THR( pom->GetObject( DFGUID_IPAddressInfo,
cookie,
reinterpret_cast< IUnknown ** >( &m_pList[ m_cIter ] )
) );
if ( FAILED( hr ) )
goto Cleanup;
m_cIter++;
} // while: S_OK
//
// Reset the iter.
//
m_cIter = 0;
//
// Grab the interface.
//
hr = THR( QueryInterface( DFGUID_EnumIPAddressInfo,
reinterpret_cast< void ** >( ppunkOut )
) );
if ( FAILED( hr ) )
goto Cleanup;
Cleanup:
if ( pom != NULL )
{
pom->Release( );
}
if ( psi != NULL )
{
psi->Release( );
}
if ( pec != NULL )
{
pec->Release( );
}
HRETURN( hr );
InvalidArg:
hr = THR( E_INVALIDARG );
goto Cleanup;
InvalidPointer:
hr = THR( E_POINTER );
goto Cleanup;
InvalidType:
//
// TODO: gpease 07-APR-2000
// Come up with a better error code.
//
hr = THR( E_FAIL );
goto Cleanup;
ErrorNotFound:
// The error text is better than the coding value.
hr = THR( HRESULT_FROM_WIN32( ERROR_NOT_FOUND ) );
goto Cleanup;
OutOfMemory:
hr = E_OUTOFMEMORY;
goto Cleanup;
} // FindObject( )
//****************************************************************************
//
// IEnumClusCfgIPAddresses
//
//****************************************************************************
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::Next(
// ULONG celt,
// IClusCfgNode ** rgOut,
// ULONG * pceltFetchedOut
// )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::Next(
ULONG celt,
IClusCfgIPAddressInfo * rgOut[],
ULONG * pceltFetchedOut
)
{
TraceFunc( "[IEnumClusCfgIPAddresses]" );
ULONG celtFetched;
HRESULT hr = E_UNEXPECTED;
//
// Check parameters
//
if ( rgOut == NULL || celt == 0 )
goto InvalidPointer;
//
// Zero the return count.
//
if ( pceltFetchedOut != NULL )
{
*pceltFetchedOut = 0;
}
//
// Clear the buffer
//
ZeroMemory( rgOut, celt * sizeof(rgOut[0]) );
//
// Loop thru copying the interfaces.
//
for( celtFetched = 0
; celtFetched + m_cIter < m_cAlloced && celtFetched < celt
; celtFetched ++
)
{
hr = THR( m_pList[ m_cIter + celtFetched ]->TypeSafeQI( IClusCfgIPAddressInfo, &rgOut[ celtFetched ] ) );
if ( FAILED( hr ) )
goto CleanupList;
rgOut[ celtFetched ] = TraceInterface( L"EnumIPAddresses!IClusCfgIPAddressInfo", IClusCfgIPAddressInfo, rgOut[ celtFetched ], 1 );
} // for: celtFetched
if ( pceltFetchedOut != NULL )
{
*pceltFetchedOut = celtFetched;
}
m_cIter += celtFetched;
if ( celtFetched != celt )
{
hr = S_FALSE;
}
else
{
hr = S_OK;
}
Cleanup:
HRETURN( hr );
CleanupList:
for ( ; celtFetched != 0 ; )
{
celtFetched --;
rgOut[ celtFetched ]->Release( );
rgOut[ celtFetched ] = NULL;
}
goto Cleanup;
InvalidPointer:
hr = THR( E_POINTER );
goto Cleanup;
} // Next( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::Skip(
// ULONG celt
// )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::Skip(
ULONG celt
)
{
TraceFunc( "[IEnumClusCfgIPAddresses]" );
HRESULT hr = S_OK;
m_cIter += celt;
if ( m_cIter > m_cAlloced )
{
m_cIter = m_cAlloced;
hr = S_FALSE;
}
HRETURN( hr );
} // Skip( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::Reset( void )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::Reset( void )
{
TraceFunc( "[IEnumClusCfgIPAddresses]" );
HRESULT hr = S_OK;
m_cIter = 0;
HRETURN( hr );
} // Reset( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::Clone(
// IEnumClusCfgIPAddresses ** ppenumOut
// )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::Clone(
IEnumClusCfgIPAddresses ** ppenumOut
)
{
TraceFunc( "[IEnumClusCfgIPAddresses]" );
//
// KB: not going to implement this method.
//
HRESULT hr = THR( E_NOTIMPL );
HRETURN( hr );
} // Clone( )
//////////////////////////////////////////////////////////////////////////////
//
// STDMETHODIMP
// CEnumIPAddresses::Count(
// DWORD * pnCountOut
// )
//
//////////////////////////////////////////////////////////////////////////////
STDMETHODIMP
CEnumIPAddresses::Count(
DWORD * pnCountOut
)
{
TraceFunc( "[IEnumClusCfgIPAddresses]" );
HRESULT hr = S_OK;
if ( pnCountOut == NULL )
{
hr = THR( E_POINTER );
goto Cleanup;
}
*pnCountOut = m_cAlloced;
Cleanup:
HRETURN( hr );
}// Count( )