Source code of Windows XP (NT5)
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737 lines
14 KiB

//
// Copyright 1997 - Microsoft
//
// CENUMSIF.CPP - Handles enumerating OSes and Tools SIFs from DS
//
#include "pch.h"
#include "cenumsif.h"
DEFINE_MODULE("IMADMUI")
DEFINE_THISCLASS("CEnumIMSIFs")
#define THISCLASS CEnumIMSIFs
#define LPTHISCLASS LPENUMSIFS
// ************************************************************************
//
// Constructor / Destructor
//
// ************************************************************************
//
// CreateInstance()
//
LPVOID
CEnumIMSIFs_CreateInstance(
LPWSTR pszEnumPath,
LPWSTR pszAttribute,
DWORD dwFlags,
IADs * pads )
{
TraceFunc( "CEnumIMSIFs_CreateInstance()\n" );
LPTHISCLASS lpcc = new THISCLASS( );
HRESULT hr = THR( lpcc->Init( pszEnumPath, pszAttribute, dwFlags, pads ) );
if ( hr )
{
delete lpcc;
RETURN(NULL);
}
RETURN((LPVOID) lpcc);
}
//
// Constructor
//
THISCLASS::THISCLASS( )
{
TraceClsFunc( "CEnumIMSIFs()\n" );
InterlockIncrement( g_cObjects );
TraceFuncExit();
}
//
// Init()
//
STDMETHODIMP
THISCLASS::Init(
LPWSTR pszEnumPath,
LPWSTR pszAttribute,
DWORD dwFlags,
IADs * pads )
{
TraceClsFunc( "Init()\n" );
HRESULT hr = S_OK;
LPWSTR psz;
VARIANT var;
VariantInit( &var );
// IUnknown stuff
BEGIN_QITABLE_IMP( CEnumIMSIFs, IEnumIMSIFs );
QITABLE_IMP( IEnumIMSIFs );
END_QITABLE_IMP( CEnumIMSIFs );
Assert( _cRef == 0);
AddRef( );
// Private Members
Assert( _iIndex == 0 );
Assert( !_pszLanguage );
Assert( !_pszOS );
Assert( !_pszArchitecture );
Assert( !_pszSIF );
pads->AddRef( );
_pads = pads;
hr = THR( _pads->Get( NETBOOTSERVER, &var ) );
if (hr)
goto Error;
psz = V_BSTR( &var );
hr = THR( DNtoFQDN( psz, &_pszServerName ) );
if (hr)
goto Error;
_dwFlags = dwFlags;
_pszAttribute = (LPWSTR) TraceStrDup( pszAttribute );
if ( !_pszAttribute )
{
hr = THR(E_OUTOFMEMORY);
goto Error;
}
_pszEnumPath = (LPWSTR) TraceStrDup( pszEnumPath );
if ( !_pszEnumPath )
{
hr = THR(E_OUTOFMEMORY);
goto Error;
}
_hLanguage = INVALID_HANDLE_VALUE;
_hOS = INVALID_HANDLE_VALUE;
_hArchitecture = INVALID_HANDLE_VALUE;
_hSIF = INVALID_HANDLE_VALUE;
Error: // Destructor will handle cleanup
VariantClear( &var );
HRETURN(hr);
}
//
// Destructor
//
THISCLASS::~THISCLASS( )
{
TraceClsFunc( "~CEnumIMSIFs()\n" );
// Private Members
if ( _pads )
{
// Commit any changes before we release
THR( _pads->SetInfo( ) );
_pads->Release( );
}
if ( _pszAttribute )
TraceFree( _pszAttribute );
if ( _pszEnumPath )
TraceFree( _pszEnumPath );
if ( _hLanguage != INVALID_HANDLE_VALUE )
FindClose( _hLanguage );
if ( _hOS != INVALID_HANDLE_VALUE )
FindClose( _hOS );
if ( _hSIF != INVALID_HANDLE_VALUE )
FindClose( _hSIF );
if ( _pszLanguage )
TraceFree( _pszLanguage );
if ( _pszOS )
TraceFree( _pszOS );
if ( _pszSIF )
TraceFree( _pszSIF );
if ( _pszServerName )
TraceFree( _pszServerName );
InterlockDecrement( g_cObjects );
TraceFuncExit();
};
// ************************************************************************
//
// IUnknown
//
// ************************************************************************
//
// QueryInterface()
//
STDMETHODIMP
THISCLASS::QueryInterface(
REFIID riid,
LPVOID *ppv )
{
TraceClsFunc( "[IUnknown] QueryInterface( riid=" );
HRESULT hr = ::QueryInterface( this, _QITable, riid, ppv );
QIRETURN( hr, riid );
}
//
// AddRef()
//
STDMETHODIMP_(ULONG)
THISCLASS::AddRef( void )
{
TraceClsFunc( "[IUnknown] AddRef( )\n" );
InterlockIncrement( _cRef );
RETURN(_cRef);
}
//
// Release()
//
STDMETHODIMP_(ULONG)
THISCLASS::Release( void )
{
TraceClsFunc( "[IUnknown] Release( )\n" );
InterlockDecrement( _cRef );
if ( _cRef )
RETURN(_cRef);
TraceDo( delete this );
RETURN(0);
}
// ************************************************************************
//
// IEnumIMSIFs
//
// ************************************************************************
//
// Next( )
//
HRESULT
THISCLASS::Next(
ULONG celt,
LPWSTR * rgelt,
ULONG * pceltFetched )
{
TraceClsFunc( "[IEnumIMSIFs] Next( ... )\n" );
if ( !rgelt )
RRETURN(E_POINTER);
HRESULT hr;
if (pceltFetched)
*pceltFetched = 0;
if ( _fWrite )
{
hr = THR(E_NOTIMPL);
}
else // READ
{
for ( ULONG ul = 0; ul < celt; ul++ )
{
hr = _FindNextItem( &rgelt[ ul ] );
if (hr)
goto Error;
}
if (pceltFetched)
*pceltFetched = ul;
}
Cleanup:
HRETURN(hr);
Error:
goto Cleanup;
}
//
// Skip( )
//
HRESULT
THISCLASS::Skip(
ULONG celt )
{
TraceClsFunc( "[IEnumIMSIFs] Skip( ... )\n" );
HRESULT hr = S_OK;
for( ULONG ul = 0; ul < celt; ul++ )
{
_iIndex++;
hr = THR( _FindNextItem( NULL ) );
if ( hr == E_POINTER )
{ // expected result
hr = S_OK;
}
else if (hr)
goto Error;
}
Error:
HRETURN(hr);
}
//
// Reset( )
//
HRESULT
THISCLASS::Reset( void )
{
TraceClsFunc( "[IEnumIMSIFs] Reset( ... )\n" );
HRESULT hr = S_OK;
_iIndex = 0;
if ( _hLanguage != INVALID_HANDLE_VALUE )
{
FindClose( _hLanguage );
_hLanguage = INVALID_HANDLE_VALUE;
}
if ( _hOS != INVALID_HANDLE_VALUE )
{
FindClose( _hOS );
_hOS = INVALID_HANDLE_VALUE;
}
if ( _hArchitecture )
{
FindClose( _hArchitecture );
_hArchitecture = INVALID_HANDLE_VALUE;
}
if ( _hSIF )
{
FindClose( _hSIF );
_hSIF = INVALID_HANDLE_VALUE;
}
HRETURN(hr);
}
//
// Clone( )
//
HRESULT
THISCLASS::Clone(
LPUNKNOWN * ppenum )
{
TraceClsFunc( "[IEnumIMSIFs] Clone( ... )\n" );
if ( !ppenum )
RRETURN(E_POINTER);
HRESULT hr = S_OK;
*ppenum = (LPUNKNOWN) CEnumIMSIFs_CreateInstance( _pszEnumPath,
_pszAttribute,
_dwFlags,
_pads );
if ( !*ppenum )
{
hr = THR(E_FAIL);
}
HRETURN(hr);
}
// ************************************************************************
//
// Privates
//
// ************************************************************************
//
// _FindNextItem( )
//
HRESULT
THISCLASS::_FindNextItem(
LPWSTR * ppszFileName )
{
TraceClsFunc( "_FindNextItem( ... )\n" );
HRESULT hr = S_FALSE;
WCHAR szFilePath[ MAX_PATH ];
if ( _hLanguage == INVALID_HANDLE_VALUE )
{
hr = _NextLanguage( );
if (hr)
goto Error;
}
if ( _hOS == INVALID_HANDLE_VALUE )
{
hr = _NextOS( );
if (hr)
goto Error;
}
if ( _hArchitecture == INVALID_HANDLE_VALUE )
{
hr = _NextArchitecture( );
if (hr)
goto Error;
}
hr = _NextSIF( );
if (hr)
goto Error;
// NOTE: Skip( ) passes NULL in to "skip" and should except this error.
if ( !ppszFileName )
HRETURN(E_POINTER);
// Create a buffer
// 1 2 3
// 12 345678901234567 8 9 0 12345678901 = 31 + NULL = 32
// \\%s\REMINST\SETUP\%s\%s\%s\%s\templates\%s
*ppszFileName = (LPWSTR ) TraceAllocString( LMEM_FIXED, 32
+ wcslen( _pszServerName )
+ wcslen( _pszLanguage )
+ wcslen( _pszEnumPath )
+ wcslen( _pszOS )
+ wcslen( _pszArchitecture )
+ wcslen( _pszSIF ) );
if ( !*ppszFileName )
{
hr = E_OUTOFMEMORY;
goto Error;
}
wsprintf( *ppszFileName,
L"\\\\%s\\" REMINST_SHARE SLASH_SETUP L"\\%s\\%s\\%s\\%s" SLASH_TEMPLATES L"\\%s",
_pszServerName,
_pszLanguage,
_pszEnumPath,
_pszOS,
_pszArchitecture,
_pszSIF );
hr = S_OK;
Cleanup:
HRETURN(hr);
Error:
*ppszFileName = NULL;
goto Cleanup;
}
//
// _NextLanguage( )
//
HRESULT
THISCLASS::_NextLanguage( )
{
TraceClsFunc( "_NextLanguage( ... )\n" );
HRESULT hr = S_FALSE;
WIN32_FIND_DATA fd;
if ( _pszLanguage )
{
TraceFree( _pszLanguage );
_pszLanguage = NULL;
}
if ( _hLanguage == INVALID_HANDLE_VALUE )
{
WCHAR szFilePath[ MAX_PATH ];
wsprintf( szFilePath,
L"\\\\%s\\" REMINST_SHARE SLASH_SETUP L"\\*",
_pszServerName );
DebugMsg( "Enumerating %s...\n", szFilePath );
_hLanguage = FindFirstFile( szFilePath, &fd );
if ( _hLanguage == INVALID_HANDLE_VALUE )
goto TryAgain;
Assert( fd.cFileName[0] == L'.' );
// we skip the first one because it should be the "." file
}
while ( FindNextFile( _hLanguage, &fd ) )
{
if ( fd.cFileName[0] != L'.' )
{
_pszLanguage = (LPWSTR) TraceStrDup( fd.cFileName );
if ( !_pszLanguage )
{
hr = THR(E_OUTOFMEMORY);
goto Cleanup;
}
hr = S_OK;
break;
}
}
Cleanup:
HRETURN(hr);
TryAgain:
goto Cleanup;
}
//
// _NextOS( )
//
HRESULT
THISCLASS::_NextOS( )
{
TraceClsFunc( "_NextOS( ... )\n" );
HRESULT hr = S_FALSE;
WIN32_FIND_DATA fd;
if ( _pszOS )
{
TraceFree( _pszOS );
_pszOS = NULL;
}
if ( _hOS == INVALID_HANDLE_VALUE )
{
WCHAR szFilePath[ MAX_PATH ];
wsprintf( szFilePath,
L"\\\\%s\\" REMINST_SHARE SLASH_SETUP L"\\%s\\%s\\*",
_pszServerName,
_pszLanguage,
_pszEnumPath );
DebugMsg( "Enumerating %s...\n", szFilePath );
_hOS = FindFirstFile( szFilePath, &fd );
if ( _hOS == INVALID_HANDLE_VALUE )
goto TryAgain;
Assert( fd.cFileName[0] == L'.' );
// we skip the first one because it should be the "." file
}
while ( FindNextFile( _hOS, &fd ) )
{
if ( fd.cFileName[0] != L'.' )
{
_pszOS = (LPWSTR) TraceStrDup( fd.cFileName );
if ( !_pszOS )
{
hr = THR(E_OUTOFMEMORY);
goto Cleanup;
}
hr = S_OK;
break;
}
}
if (hr)
goto TryAgain;
Cleanup:
HRETURN(hr);
TryAgain:
if ( _hOS != INVALID_HANDLE_VALUE )
{
FindClose( _hOS );
_hOS = INVALID_HANDLE_VALUE;
}
hr = _NextLanguage( );
if (hr)
goto Cleanup;
hr = _NextOS( ); // recurse
goto Cleanup;
}
//
// _NextArchitecture( )
//
HRESULT
THISCLASS::_NextArchitecture( )
{
TraceClsFunc( "_NextArchitecture( ... )\n" );
HRESULT hr = S_FALSE;
WIN32_FIND_DATA fd;
if ( _pszArchitecture )
{
TraceFree( _pszArchitecture );
_pszArchitecture = NULL;
}
if ( _hArchitecture == INVALID_HANDLE_VALUE )
{
WCHAR szFilePath[ MAX_PATH ];
wsprintf( szFilePath,
L"\\\\%s\\" REMINST_SHARE SLASH_SETUP L"\\%s\\%s\\%s\\*",
_pszServerName,
_pszLanguage,
_pszEnumPath,
_pszOS );
DebugMsg( "Enumerating %s...\n", szFilePath );
_hArchitecture = FindFirstFile( szFilePath, &fd );
if ( _hArchitecture == INVALID_HANDLE_VALUE )
goto TryAgain;
Assert( fd.cFileName[0] == L'.' );
// we skip the first one because it should be the "." file
}
while ( FindNextFile( _hArchitecture, &fd ) )
{
if ( fd.cFileName[0] != L'.' )
{
_pszArchitecture = (LPWSTR) TraceStrDup( fd.cFileName );
if ( !_pszArchitecture )
{
hr = THR(E_OUTOFMEMORY);
goto Cleanup;
}
hr = S_OK;
break;
}
}
if (hr)
goto TryAgain;
Cleanup:
HRETURN(hr);
TryAgain:
if ( _hArchitecture != INVALID_HANDLE_VALUE )
{
FindClose( _hArchitecture );
_hArchitecture = INVALID_HANDLE_VALUE;
}
hr = _NextOS( );
if (hr)
goto Cleanup;
hr = _NextArchitecture( ); // recurse
goto Cleanup;
}
//
// _NextSIF( )
//
HRESULT
THISCLASS::_NextSIF( )
{
TraceClsFunc( "_NextSIF( ... )\n" );
HRESULT hr = S_FALSE;
WIN32_FIND_DATA fd;
if ( _pszSIF )
{
TraceFree( _pszSIF );
_pszSIF = NULL;
}
if ( _hSIF == INVALID_HANDLE_VALUE )
{
WCHAR szFilePath[ MAX_PATH ];
wsprintf( szFilePath,
L"\\\\%s\\" REMINST_SHARE SLASH_SETUP L"\\%s\\%s\\%s\\%s" SLASH_TEMPLATES L"\\*.sif",
_pszServerName,
_pszLanguage,
_pszEnumPath,
_pszOS,
_pszArchitecture );
DebugMsg( "Enumerating %s...\n", szFilePath );
_hSIF = FindFirstFile( szFilePath, &fd );
if ( _hSIF == INVALID_HANDLE_VALUE )
goto TryAgain;
}
else
{
if ( !FindNextFile( _hSIF, &fd ) )
goto TryAgain;
}
_pszSIF = (LPWSTR) TraceStrDup( fd.cFileName );
if ( !_pszSIF )
{
hr = THR(E_OUTOFMEMORY);
goto Cleanup;
}
hr = S_OK;
Cleanup:
HRETURN(hr);
TryAgain:
if ( _hSIF != INVALID_HANDLE_VALUE )
{
FindClose( _hSIF );
_hSIF = INVALID_HANDLE_VALUE;
}
hr = _NextArchitecture( );
if (hr)
goto Cleanup;
hr = _NextSIF( ); // recurse
goto Cleanup;
}