Leaked source code of windows server 2003
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#include "pch.cxx"
#include "CPropVar.hxx"
#include "CHResult.hxx"
#include <stdio.h>
#include <tchar.h>
// Declare this prototype here, for now. For non-Mac, the prototype
// in "iofs.h" uses C decorations, but the definition in
// ntpropb.cxx uses C++.
#ifdef _MAC_NODOC
EXTERN_C BOOLEAN
#else
BOOLEAN __declspec(dllimport) __stdcall
#endif
RtlCompareVariants(
USHORT CodePage,
PROPVARIANT const *pvar1,
PROPVARIANT const *pvar2);
/*
CPropVariant::InitializeVector(
VARENUM v,
ULONG cElements)
{
ULONG cbElement;
BOOLEAN fZero = FALSE;
// Ignore vector flag. This constructor is always for vectors only.
vt = v | VT_VECTOR;
switch (vt)
{
case VT_VECTOR | VT_UI1:
cbElement = sizeof(caub.pElems[0]);
break;
case VT_VECTOR | VT_I2:
case VT_VECTOR | VT_UI2:
case VT_VECTOR | VT_BOOL:
cbElement = sizeof(cai.pElems[0]);
break;
case VT_VECTOR | VT_I4:
case VT_VECTOR | VT_UI4:
case VT_VECTOR | VT_R4:
case VT_VECTOR | VT_ERROR:
cbElement = sizeof(cal.pElems[0]);
break;
case VT_VECTOR | VT_I8:
case VT_VECTOR | VT_UI8:
case VT_VECTOR | VT_R8:
case VT_VECTOR | VT_CY:
case VT_VECTOR | VT_DATE:
case VT_VECTOR | VT_FILETIME:
cbElement = sizeof(cah.pElems[0]);
break;
case VT_VECTOR | VT_CLSID:
cbElement = sizeof(GUID);
fZero = TRUE;
break;
case VT_VECTOR | VT_CF:
cbElement = sizeof(CLIPDATA);
fZero = TRUE;
break;
case VT_VECTOR | VT_BSTR:
case VT_VECTOR | VT_LPSTR:
case VT_VECTOR | VT_LPWSTR:
cbElement = sizeof(VOID *);
fZero = TRUE;
break;
case VT_VECTOR | VT_VARIANT:
cbElement = sizeof(PROPVARIANT);
ASSERT(VT_EMPTY == 0);
fZero = TRUE;
break;
default:
ASSERT(!"CAllocStorageVariant -- Invalid vector type");
vt = VT_EMPTY;
break;
}
if (vt != VT_EMPTY)
{
caub.cElems = 0;
caub.pElems = (BYTE *) CoTaskMemAlloc(cElements * cbElement);
if (caub.pElems != NULL)
{
if (fZero)
{
memset(caub.pElems, 0, cElements * cbElement);
}
caub.cElems = cElements;
}
}
}
*/
VOID *
CPropVariant::_AddStringToVector(
unsigned pos,
const VOID *pv,
ULONG cb,
VARTYPE vtNew )
{
vtNew |= VT_VECTOR;
ASSERT(vtNew == (VT_VECTOR | VT_BSTR) ||
vtNew == (VT_VECTOR | VT_LPSTR) ||
vtNew == (VT_VECTOR | VT_LPWSTR) ||
vtNew == (VT_VECTOR | VT_CF) );
ASSERT(calpstr.pElems != NULL);
if (pos >= calpstr.cElems)
{
char **ppsz = calpstr.pElems;
calpstr.pElems =
(char **) CoTaskMemAlloc((pos + 1) * sizeof(calpstr.pElems[0]));
if (calpstr.pElems == NULL)
{
calpstr.pElems = ppsz;
return(NULL);
}
if( NULL != ppsz )
memcpy(calpstr.pElems, ppsz, calpstr.cElems * sizeof(calpstr.pElems[0]));
memset(
&calpstr.pElems[calpstr.cElems],
0,
((pos + 1) - calpstr.cElems) * sizeof(calpstr.pElems[0]));
calpstr.cElems = pos + 1;
CoTaskMemFree(ppsz);
}
LPSTR psz;
if( (VT_VECTOR | VT_BSTR) == vtNew )
{
if( NULL == pv )
{
psz = NULL;
}
else
{
psz = (LPSTR) SysAllocString( (BSTR) pv );
if (psz == NULL)
{
return(NULL);
}
}
if (calpstr.pElems[pos] != NULL)
{
SysFreeString((BSTR) calpstr.pElems[pos]);
}
calpstr.pElems[pos] = psz;
}
else
{
if( NULL == pv )
{
psz = NULL;
}
else
{
psz = (LPSTR) CoTaskMemAlloc((VT_BSTR == (vtNew & ~VT_VECTOR) )
? cb + sizeof(ULONG)
: cb );
if (psz == NULL)
{
return(NULL);
}
memcpy(psz, pv, cb);
}
if (calpstr.pElems[pos] != NULL)
{
CoTaskMemFree(calpstr.pElems[pos]);
}
calpstr.pElems[pos] = psz;
}
return(calpstr.pElems[pos]);
}
VOID *
CPropVariant::_AddScalerToVector(
unsigned pos,
const VOID *pv,
ULONG cb)
{
ASSERT(calpstr.pElems != NULL);
if (pos >= calpstr.cElems)
{
char **ppsz = calpstr.pElems;
calpstr.pElems =
(char **) CoTaskMemAlloc((pos + 1) * cb);
if (calpstr.pElems == NULL)
{
calpstr.pElems = ppsz;
return(NULL);
}
memset(
calpstr.pElems,
0,
((pos + 1) - calpstr.cElems) * cb);
if( NULL != ppsz )
memcpy(calpstr.pElems, ppsz, calpstr.cElems * cb);
calpstr.cElems = pos + 1;
CoTaskMemFree(ppsz);
}
memcpy( (BYTE*)calpstr.pElems + pos*cb, pv, cb );
return( (BYTE*)calpstr.pElems + pos*cb );
}
void
CPropVariant::SetCF(
const CLIPDATA *pclipdata,
ULONG pos)
{
CLIPDATA *pclipdataNew;
if (vt != (VT_VECTOR | VT_CF))
{
Clear();
vt = VT_VECTOR | VT_CF;
}
pclipdataNew = (CLIPDATA*) _AddScalerToVector(pos, (VOID *) pclipdata, sizeof(CLIPDATA) );
if( NULL != pclipdataNew
&&
NULL != pclipdata )
{
pclipdataNew->pClipData = (BYTE*) CoTaskMemAlloc( CBPCLIPDATA(*pclipdata) );
if( NULL == pclipdataNew->pClipData )
{
ASSERT( !"Couldn't allocate pclipdataNew" );
return;
}
else
{
pclipdataNew->cbSize = pclipdata->cbSize;
pclipdataNew->ulClipFmt = pclipdata->ulClipFmt;
memcpy( pclipdataNew->pClipData,
pclipdata->pClipData,
CBPCLIPDATA(*pclipdata) );
return;
}
}
}
void
CPropVariant::SetBSTR(
const BSTR posz,
ULONG pos)
{
ULONG cch;
if( vt != (VT_BSTR | VT_VECTOR) ) Clear();
if( NULL == posz )
cch = 0;
else
cch = ocslen(posz) + 1;
if (vt != (VT_VECTOR | VT_BSTR))
Clear();
_AddStringToVector(pos, (VOID *) posz,
sizeof(OLECHAR) * cch, VT_BSTR );
vt = VT_BSTR | VT_VECTOR;
}
CPropVariant & CPropVariant::operator =(PROPVARIANT &propvar)
{
if( INVALID_SUBSCRIPT == wReserved1 )
{
throw CHRESULT( (HRESULT) E_FAIL, OLESTR("Attempt to assign a singleton VT_VARIANT") );
return (*this);
}
else
{
if( !(vt & VT_VECTOR)
||
(vt & ~VT_VECTOR) != VT_VARIANT )
{
USHORT wReserved1Save = wReserved1;
Clear();
wReserved1 = wReserved1Save;
}
Set( VT_VARIANT | VT_VECTOR, (void*) &propvar, wReserved1 - 1 );
wReserved1 = INVALID_SUBSCRIPT;
return (*this);
}
}
void
CPropVariant::SetPROPVARIANT( PROPVARIANT &propvar, ULONG pos )
{
if( vt != (VT_VARIANT | VT_VECTOR) ) Clear();
if (pos >= capropvar.cElems)
{
LPPROPVARIANT rgpropvar = capropvar.pElems;
capropvar.pElems =
(PROPVARIANT *) CoTaskMemAlloc((pos + 1) * sizeof(capropvar.pElems[0]));
if (capropvar.pElems == NULL)
{
capropvar.pElems = rgpropvar;
return;
}
if( NULL != rgpropvar )
memcpy(capropvar.pElems, rgpropvar, capropvar.cElems * sizeof(capropvar.pElems[0]));
memset(
&capropvar.pElems[capropvar.cElems],
0,
((pos + 1) - capropvar.cElems) * sizeof(capropvar.pElems[0]));
capropvar.cElems = pos + 1;
CoTaskMemFree(rgpropvar);
}
PropVariantClear( &capropvar.pElems[pos] );
PropVariantCopy( &capropvar.pElems[pos], &propvar );
vt = VT_VARIANT | VT_VECTOR;
return;
}
void
CPropVariant::SetCF(const CLIPDATA *p)
{
Clear();
if( NULL == p )
return;
pclipdata = (CLIPDATA*) CoTaskMemAlloc( sizeof(CLIPDATA) );
if( NULL == pclipdata )
{
return;
}
pclipdata->cbSize = p->cbSize;
pclipdata->ulClipFmt = p->ulClipFmt;
pclipdata->pClipData = NULL;
if( sizeof(pclipdata->ulClipFmt) > p->cbSize )
{
throw CHRESULT( (HRESULT) E_FAIL, OLESTR("Invalid input CLIPDATA*") );
return;
}
if( NULL != p->pClipData )
{
pclipdata->pClipData = (BYTE*) CoTaskMemAlloc( pclipdata->cbSize
- sizeof(pclipdata->ulClipFmt) );
if( NULL == pclipdata->pClipData )
return;
memcpy( pclipdata->pClipData, p->pClipData, pclipdata->cbSize - sizeof(pclipdata->ulClipFmt) );
}
vt = VT_CF;
}
void
CPropVariant::SetCLSID( const CLSID *pclsid )
{
Clear();
puuid = (CLSID*) CoTaskMemAlloc( sizeof(CLSID) );
if( NULL == puuid )
throw CHRESULT( (HRESULT) E_OUTOFMEMORY, OLESTR("CPropVariant::SetCLSID couldn't alloc a new CLSID") );
*puuid = *pclsid;
vt = VT_CLSID;
}
void
CPropVariant::SetCLSID(
const CLSID *pclsid,
unsigned pos)
{
CLSID *pclsidNew;
if (vt != (VT_VECTOR | VT_CLSID))
{
Clear();
vt = VT_VECTOR | VT_CLSID;
}
pclsidNew = (CLSID*) _AddScalerToVector(pos, (const VOID *) pclsid, sizeof(CLSID) );
if( NULL != pclsidNew )
{
*pclsidNew = *pclsid;
}
}
#define COMPARE_CHUNK_SIZE 4096
//+----------------------------------------------------------------------------
//
// CPropVariant::Compare
//
// Compare two CPropVariants. This routine defers to the RtlCompareVariants
// for most types. Types not supported by that routine are handled here.
//
//+----------------------------------------------------------------------------
HRESULT
CPropVariant::Compare( PROPVARIANT *ppropvar1, PROPVARIANT *ppropvar2 )
{
HRESULT hr = S_OK;
VARTYPE vt1 = ppropvar1->vt;
IStream *pStream1 = NULL, *pStream2 = NULL;
BYTE *prgb1 = NULL, *prgb2 = NULL;
CLargeInteger liCurrentSeek;
switch( vt1 )
{
case VT_VERSIONED_STREAM:
if( ppropvar1->pVersionedStream == NULL && ppropvar2->pVersionedStream == NULL )
return( S_OK );
else if( ppropvar1->pVersionedStream == NULL || ppropvar2->pVersionedStream == NULL )
return( S_FALSE );
else if( ppropvar1->pVersionedStream->guidVersion != ppropvar2->pVersionedStream->guidVersion )
return( S_FALSE );
pStream1 = ppropvar1->pVersionedStream->pStream;
pStream2 = ppropvar2->pVersionedStream->pStream;
// Fall through
case VT_STREAM:
case VT_STREAMED_OBJECT:
{
// Note: This comparisson effects the seek pointers, though
// barring error they are restored on completion.
STATSTG statstg1, statstg2;
CULargeInteger uliSeek1, uliSeek2;
if( NULL == pStream1 )
{
ASSERT( NULL == pStream2 );
pStream1 = ppropvar1->pStream;
pStream2 = ppropvar2->pStream;
}
if( ppropvar1->vt != ppropvar2->vt
||
NULL == pStream1 && NULL != pStream2
||
NULL != pStream1 && NULL == pStream2 )
{
return( S_FALSE );
}
hr = pStream1->Stat( &statstg1, STATFLAG_NONAME );
if( FAILED(hr) ) goto Exit;
hr = pStream2->Stat( &statstg2, STATFLAG_NONAME );
if( FAILED(hr) ) goto Exit;
if( CULargeInteger(statstg1.cbSize) != CULargeInteger(statstg2.cbSize) )
return( S_FALSE );
prgb1 = new BYTE[ COMPARE_CHUNK_SIZE ];
if( NULL == prgb1 )
{
hr = E_OUTOFMEMORY;
goto Exit;
}
prgb2 = new BYTE[ COMPARE_CHUNK_SIZE ];
if( NULL == prgb2 )
{
hr = E_OUTOFMEMORY;
goto Exit;
}
hr = pStream1->Seek( CLargeInteger(0), STREAM_SEEK_CUR, &uliSeek1 );
if( FAILED(hr) ) goto Exit;
hr = pStream2->Seek( CLargeInteger(0), STREAM_SEEK_CUR, &uliSeek2 );
if( FAILED(hr) ) goto Exit;
liCurrentSeek = CLargeInteger(0);
CULargeInteger cbRemaining = statstg1.cbSize;
while( cbRemaining > 0 )
{
ULONG cbRead1 = 0, cbRead2 = 0;
hr = pStream1->Seek( liCurrentSeek, STREAM_SEEK_SET, NULL );
if( FAILED(hr) ) goto Exit;
hr = pStream1->Read( prgb1, COMPARE_CHUNK_SIZE, &cbRead1 );
if( FAILED(hr) ) goto Exit;
hr = pStream2->Seek( liCurrentSeek, STREAM_SEEK_SET, NULL );
if( FAILED(hr) ) goto Exit;
hr = pStream2->Read( prgb2, COMPARE_CHUNK_SIZE, &cbRead2 );
if( FAILED(hr) ) goto Exit;
if( cbRead1 != cbRead2 )
{
hr = STG_E_READFAULT;
goto Exit;
}
if( memcmp( prgb1, prgb2, cbRead1 ) )
{
hr = S_FALSE;
goto Exit;
}
liCurrentSeek += cbRead1;
cbRemaining -= cbRead1;
}
hr = pStream1->Seek( static_cast<CLargeInteger>(uliSeek1), STREAM_SEEK_SET, NULL );
if( FAILED(hr) ) goto Exit;
hr = pStream2->Seek( static_cast<CLargeInteger>(uliSeek2), STREAM_SEEK_SET, NULL );
if( FAILED(hr) ) goto Exit;
hr = S_OK;
goto Exit;
}
case VT_STORAGE:
case VT_STORED_OBJECT:
{
if( ppropvar1->vt == ppropvar2->vt
&&
( NULL == ppropvar1->vt
&&
NULL == ppropvar2->vt
||
NULL != ppropvar1->vt
&&
NULL != ppropvar2->vt
)
)
{
return( S_OK );
}
else
{
return( S_FALSE );
}
}
break;
default:
// For SafeArrays we just check the structure, not the data.
if( VT_ARRAY & vt1 )
{
if( ppropvar1->vt != ppropvar2->vt
||
ppropvar1->parray->cDims != ppropvar2->parray->cDims
||
SafeArrayGetElemsize(ppropvar1->parray) != SafeArrayGetElemsize(ppropvar2->parray) )
{
return (HRESULT) S_FALSE;
}
else
{
return (HRESULT) S_OK;
}
}
else if( PropTestCompareVariants( CP_ACP, // Ignored,
ppropvar1,
ppropvar2 ))
{
return( (HRESULT) S_OK );
}
else
{
return( (HRESULT) S_FALSE );
}
break;
}
Exit:
if( NULL != prgb1 )
delete[] prgb1;
if( NULL != prgb2 )
delete[] prgb2;
return( hr );
}
void
CPropVariant::Set( VARTYPE vtSet, void *pv, ULONG pos )
{
BOOL fVector = (vtSet & VT_VECTOR) ? TRUE : FALSE;
switch( vtSet & ~VT_VECTOR )
{
case VT_I1:
if( fVector )
SetI1( *(CHAR*) pv, pos );
else
SetI1( *(CHAR*) pv );
break;
case VT_UI1:
if( fVector )
SetUI1( *(UCHAR*) pv, pos );
else
SetUI1( *(UCHAR*) pv );
break;
case VT_I2:
if( fVector )
SetI2( *(short*) pv, pos );
else
SetI2( *(short*) pv );
break;
case VT_UI2:
if( fVector )
SetUI2( *(USHORT*) pv, pos );
else
SetUI2( *(USHORT*) pv );
break;
case VT_BOOL:
if( fVector )
SetBOOL( *(VARIANT_BOOL*) pv, pos );
else
SetBOOL( *(VARIANT_BOOL*) pv );
break;
case VT_I4:
if( fVector )
SetI4( *(long*) pv, pos );
else
SetI4( *(long*) pv );
break;
case VT_UI4:
if( fVector )
SetUI4( *(ULONG*) pv, pos );
else
SetUI4( *(ULONG*) pv );
break;
case VT_R4:
if( fVector )
SetR4( *(float*) pv, pos );
else
SetR4( *(float*) pv );
break;
case VT_ERROR:
if( fVector )
SetERROR( *(SCODE*) pv, pos );
else
SetERROR( *(SCODE*) pv );
break;
case VT_I8:
if( fVector )
SetI8( *(LARGE_INTEGER*) pv, pos );
else
SetI8( *(LARGE_INTEGER*) pv );
break;
case VT_UI8:
if( fVector )
SetUI8( *(ULARGE_INTEGER*) pv, pos );
else
SetUI8( *(ULARGE_INTEGER*) pv );
break;
case VT_R8:
if( fVector )
SetR8( *(double*) pv, pos );
else
SetR8( *(double*) pv );
break;
case VT_CY:
if( fVector )
SetCY( *(CY*) pv, pos );
else
SetCY( *(CY*) pv );
break;
case VT_DATE:
if( fVector )
SetDATE( *(DATE*) pv, pos );
else
SetDATE( *(DATE*) pv );
break;
case VT_FILETIME:
if( fVector )
SetFILETIME( *(FILETIME*) pv, pos );
else
SetFILETIME( *(FILETIME*) pv );
break;
case VT_CLSID:
if( fVector )
SetCLSID( *(CLSID*) pv, pos );
else
SetCLSID( *(CLSID*) pv );
break;
case VT_BLOB:
ASSERT( !fVector );
SetBLOB( *(BLOB*) pv );
break;
case VT_CF:
if( fVector )
SetCF( *(CLIPDATA**) pv, pos );
else
SetCF( *(CLIPDATA**) pv );
break;
case VT_STREAM:
ASSERT( !fVector );
SetSTREAM( *(IStream**) pv );
break;
case VT_STORAGE:
ASSERT( !fVector );
SetSTORAGE( *(IStorage**) pv );
break;
case VT_BSTR:
if( fVector )
SetBSTR( *(BSTR*) pv, pos );
else
SetBSTR( *(BSTR*) pv );
break;
case VT_LPSTR:
if( fVector )
SetLPSTR( *(LPSTR*) pv, pos );
else
SetLPSTR( *(LPSTR*) pv );
break;
case VT_LPWSTR:
if( fVector )
SetLPWSTR( *(LPWSTR*) pv, pos );
else
SetLPWSTR( *(LPWSTR*) pv );
break;
case VT_VARIANT:
if( !fVector )
throw CHRESULT( E_FAIL, OLESTR("CPropVariant::Set - attempt to set a singleton VT_VARIANT") );
SetPROPVARIANT( *(PROPVARIANT*) pv, pos );
break;
case VT_DECIMAL:
ASSERT( !fVector );
SetDECIMAL( *(DECIMAL*) pv );
break;
default:
ASSERT(0);
throw CHRESULT( (HRESULT) E_FAIL, OLESTR("CPropVariant::Set invalid type") );
}
return;
}