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WindowsXP-SP1/admin/wmi/wbem/scripting/util.cpp
Microsoft f7ca35dddd First commit
2020-09-30 16:53:49 +02:00

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//***************************************************************************
//
// Copyright (c) 1998-1999 Microsoft Corporation
//
// UTIL.CPP
//
// alanbos 13-Feb-98 Created.
//
// Some useful functions
//
//***************************************************************************
#include "precomp.h"
#include "assert.h"
#include "initguid.h"
#include "dispex.h"
#include <math.h>
extern CWbemErrorCache *g_pErrorCache;
extern CRITICAL_SECTION g_csErrorCache;
typedef struct {
VARTYPE vtOkForQual;
VARTYPE vtTest;
} Conversion;
Conversion QualConvertList[] = {
{VT_I4, VT_I4},
{VT_I4, VT_UI1},
{VT_I4, VT_I2},
{VT_R8, VT_R4},
{VT_R8, VT_R8},
{VT_BOOL, VT_BOOL},
{VT_I4, VT_ERROR},
{VT_BSTR, VT_CY},
{VT_BSTR, VT_DATE},
{VT_BSTR, VT_BSTR}};
//***************************************************************************
//
// GetAcceptableQualType(VARTYPE vt)
//
// DESCRIPTION:
//
// Only certain types are acceptable for qualifiers. This routine takes a
// vartype and returns an acceptable conversion type. Note that if the type is
// already acceptable, then it is returned.
//
//***************************************************************************
VARTYPE GetAcceptableQualType(VARTYPE vt)
{
int iCnt;
VARTYPE vtArrayBit = vt & VT_ARRAY;
VARTYPE vtSimple = vt & ~(VT_ARRAY | VT_BYREF);
int iSize = sizeof(QualConvertList) / sizeof(Conversion);
for(iCnt = 0; iCnt < iSize; iCnt++)
if(vtSimple == QualConvertList[iCnt].vtTest)
return QualConvertList[iCnt].vtOkForQual | vtArrayBit;
return VT_ILLEGAL;
}
//***************************************************************************
//
// SCODE MapFromCIMOMObject
//
// Description:
//
// This function filters out embedded objects that have been passed in
// from CIMOM, ensuring they are returned to the automation environment
// as VT_DISPATCH types.
//
// Return Value:
// HRESULT NOERROR if successful, otherwise E_NOINTERFACE
// if we cannot support the requested interface.
//***************************************************************************
HRESULT MapFromCIMOMObject(CSWbemServices *pService,
VARIANT *pVal,
ISWbemInternalObject *pSWbemObject,
BSTR propertyName,
long index)
{
HRESULT hr = S_OK;
if(pVal->vt == VT_UNKNOWN)
{
/*
* This may be an embedded object. If it is replace by it's
* scriptable equivalent. If not leave it be.
*/
if (pVal->punkVal)
{
CComQIPtr<IWbemClassObject> pIWbemClassObject (pVal->punkVal);
if (pIWbemClassObject)
{
// Yowzer - it's one of ours
CSWbemObject *pNew = new CSWbemObject (pService, pIWbemClassObject);
if (pNew)
{
CComQIPtr<IDispatch> pIDispatch (reinterpret_cast<IUnknown*>(pNew));
if (pIDispatch)
{
// Conversion succeeded - replace the punkVal by a pdispVal
pVal->punkVal->Release ();
pVal->punkVal = NULL;
// Transfer the AddRef'd pointer from the QI call above to the Variant
pVal->pdispVal = pIDispatch.Detach ();
pVal->vt = VT_DISPATCH;
if (pSWbemObject)
{
// Our newly create CSWbemObject is an embedded object
// we need to set its site
pNew->SetSite (pSWbemObject, propertyName, index);
}
}
else
{
// This should NEVER happen, but just in case
delete pNew;
hr = WBEM_E_FAILED;
}
}
else
hr = WBEM_E_OUT_OF_MEMORY;
}
}
}
else if(pVal->vt == (VT_UNKNOWN | VT_ARRAY))
{
// got an array of objects. Replace the object pointers with a wrapper
// pointer
SAFEARRAYBOUND aBounds[1];
long lLBound, lUBound;
SafeArrayGetLBound(pVal->parray, 1, &lLBound);
SafeArrayGetUBound(pVal->parray, 1, &lUBound);
aBounds[0].cElements = lUBound - lLBound + 1;
aBounds[0].lLbound = lLBound;
// Update the individual data pieces
// ================================
bool ok = true;
for(long lIndex = lLBound; ok && (lIndex <= lUBound); lIndex++)
{
// Load the initial data element into a VARIANT
// ============================================
CComPtr<IUnknown> pUnk;
if (FAILED(SafeArrayGetElement(pVal->parray, &lIndex, &pUnk)) || !pUnk)
{
ok = false;
hr = WBEM_E_FAILED;
}
else
{
CComQIPtr<IWbemClassObject> pIWbemClassObject (pUnk);
if (pIWbemClassObject)
{
CSWbemObject *pNew = new CSWbemObject (pService, pIWbemClassObject);
if (pNew)
{
CComQIPtr<IDispatch> pIDispatch (reinterpret_cast<IUnknown*>(pNew));
if (pIDispatch)
{
if (FAILED(SafeArrayPutElement(pVal->parray, &lIndex, pIDispatch)))
{
hr = WBEM_E_FAILED;
ok = false;
}
else
{
pVal->vt = VT_ARRAY | VT_DISPATCH;
if (pSWbemObject)
{
// This element is an embedded object. We must set it's site.
pNew->SetSite (pSWbemObject, propertyName, lIndex);
}
}
}
else
{
// This should NEVER happen, but just in case
delete pNew;
hr = WBEM_E_FAILED;
}
}
else
{
hr = WBEM_E_OUT_OF_MEMORY;
ok = false;
}
}
}
}
}
return hr;
}
//***************************************************************************
//
// HRESULT MapToCIMOMObject
//
// Description:
//
// This function filters out embedded objects that have been passed in
// as VT_DISPATCH (possibly combined with VT_BYREF or VT_ARRAY). The
// object is recast inside a VT_UNKNOWN so it can be accepted by CIMOM.
//
// Parameters:
//
// pVal The input variant to check
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
HRESULT MapToCIMOMObject(
VARIANT *pVal
)
{
HRESULT hRes = S_OK;
if(pVal->vt == VT_DISPATCH || (pVal->vt == (VT_DISPATCH | VT_BYREF)))
{
/*
* We may have an embedded object. Replace the object pointer with
* a wrapper pointer.
*/
IDispatch *pDisp = NULL;
if (V_ISBYREF(pVal) && (pVal->ppdispVal))
pDisp = *(pVal->ppdispVal);
else if (VT_DISPATCH == V_VT(pVal))
pDisp = pVal->pdispVal;
if (pDisp)
{
// If successful this will AddRef the returned interface
IWbemClassObject *pObj = CSWbemObject::GetIWbemClassObject (pDisp);
if (pObj)
{
// Release the dispatch pointer as we are about to remove it from the
// VARIANT, but only if it wasn't a VT_BYREF (because byrefs don't
// get AddRef'd by VariantCopy or Released by VariantClear).
if (!V_ISBYREF(pVal))
pDisp->Release ();
pVal->punkVal = pObj;
pVal->vt = VT_UNKNOWN;
}
else
{
/*
* Rather than just cast IDispatch* to IUnknown*, we do a QI
* with a release just in case the object has per-interface
* ref counting.
*/
if (SUCCEEDED (hRes = pDisp->QueryInterface (IID_IUnknown, (PPVOID) &(pVal->punkVal))))
{
pDisp->Release ();
pVal->vt = VT_UNKNOWN;
}
}
}
}
else if(pVal->vt == (VT_DISPATCH | VT_ARRAY))
{
// got an array of embedded objects. Replace the object pointers with a wrapper
// pointer
SAFEARRAYBOUND aBounds[1];
long lLBound, lUBound;
SafeArrayGetLBound(pVal->parray, 1, &lLBound);
SafeArrayGetUBound(pVal->parray, 1, &lUBound);
aBounds[0].cElements = lUBound - lLBound + 1;
aBounds[0].lLbound = lLBound;
// Update the individual data pieces
// ================================
long lIndex;
for (lIndex = lLBound; lIndex <= lUBound; lIndex++)
{
// Load the initial data element into a VARIANT
// ============================================
IDispatch * pDisp = NULL;
if (FAILED (hRes = SafeArrayGetElement(pVal->parray, &lIndex, &pDisp)))
break;
if (pDisp)
{
// If successful this will AddRef the returned interface
IWbemClassObject *pObj = CSWbemObject::GetIWbemClassObject (pDisp);
if (pObj)
{
pDisp->Release (); // Balances the SafeArrayGetElement call
// Put it into the new array
// =========================
hRes = SafeArrayPutElement(pVal->parray, &lIndex, pObj);
pObj->Release (); // balances CSWbemObject::GetIWbemClassObject call
if (FAILED (hRes))
break;
else
pVal->vt = VT_UNKNOWN | VT_ARRAY;
}
else
{
/*
* Rather than just cast IDispatch* to IUnknown*, we do a QI
* with a release just in case the object has per-interface
* ref counting.
*/
IUnknown *pUnk = NULL;
if (SUCCEEDED (hRes = pDisp->QueryInterface (IID_IUnknown, (PPVOID) &pUnk)))
{
pDisp->Release (); // Balances the SafeArrayGetElement call
hRes = SafeArrayPutElement(pVal->parray, &lIndex, pUnk);
pUnk->Release (); // Balances the QI call
if (FAILED (hRes))
break;
else
pVal->vt = VT_UNKNOWN | VT_ARRAY;
}
else
{
pDisp->Release (); // Balances the SafeArrayGetElement call
break;
}
}
}
else
break;
}
if (lUBound < lIndex)
{
hRes = WBEM_S_NO_ERROR;
pVal->vt = VT_UNKNOWN | VT_ARRAY;
}
}
return hRes;
}
//***************************************************************************
//
// HRESULT SetSite
//
// Description:
//
// This function examines a VARIANT that has been successfully set as the
// value of a property to determine whether it contains any embedded objects.
// Any such objects are modified to ensure their site represents the property
// in question.
//
// Parameters:
//
// pVal The input variant to check
// pSObject Owning object of the property
// propertyName Take a wild guess
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
void SetSite (VARIANT *pVal, ISWbemInternalObject *pSObject, BSTR propertyName,
long index)
{
HRESULT hRes = S_OK;
if (pVal)
{
if(pVal->vt == VT_DISPATCH || (pVal->vt == (VT_DISPATCH | VT_BYREF)))
{
// Could be an embedded object
IDispatch *pDisp = NULL;
if (VT_DISPATCH == V_VT(pVal))
pDisp = pVal->pdispVal;
else if (NULL != pVal->ppdispVal)
pDisp = *(pVal->ppdispVal);
if (pDisp)
CSWbemObject::SetSite (pDisp, pSObject, propertyName, index);
}
else if(pVal->vt == (VT_DISPATCH | VT_ARRAY))
{
// Could be an array of embedded objects.
SAFEARRAYBOUND aBounds[1];
long lLBound, lUBound;
SafeArrayGetLBound(pVal->parray, 1, &lLBound);
SafeArrayGetUBound(pVal->parray, 1, &lUBound);
aBounds[0].cElements = lUBound - lLBound + 1;
aBounds[0].lLbound = lLBound;
// Update the individual data pieces
// ================================
long lIndex;
for (lIndex = lLBound; lIndex <= lUBound; lIndex++)
{
// Load the initial data element into a VARIANT
// ============================================
IDispatch * pDisp = NULL;
if (FAILED (hRes = SafeArrayGetElement(pVal->parray, &lIndex, &pDisp)))
break;
if (pDisp)
{
CSWbemObject::SetSite (pDisp, pSObject, propertyName, lIndex);
pDisp->Release (); // To balance AddRef from SafeArrayGetElement
}
else
break;
}
}
}
}
//***************************************************************************
//
// HRESULT ConvertArray
//
// Description:
//
// This function is applied to VARIANT arrays in order to check for certain
// restrictions imposed by CIMOM (e.g. they must be homogeneous) or perform
// conversions (certain VARIANT types have to be mapped to acceptable CIMOM
// types).
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
HRESULT ConvertArray(VARIANT * pDest, VARIANT * pSrc, BOOL bQualTypesOnly,
VARTYPE requiredVarType)
{
VARTYPE vtPut;
// Now is not (yet) the time to perform SWbemObject->IWbemClassObject conversion
if (VT_UNKNOWN == requiredVarType)
requiredVarType = VT_DISPATCH;
// Treat these imposters just the same...
if (VT_EMPTY == requiredVarType)
requiredVarType = VT_NULL;
if(pSrc == NULL || pDest == NULL)
return WBEM_E_FAILED;
if (!(V_VT(pSrc) & VT_ARRAY) || !(V_VT(pSrc) & VT_VARIANT))
return WBEM_E_FAILED;
// Extract the source SAFEARRAY (how depends on whether VT_BYREF is set)
SAFEARRAY *parray = NULL;
if (VT_BYREF & V_VT(pSrc))
{
if (pSrc->pparray)
parray = *(pSrc->pparray);
}
else
parray = pSrc->parray;
if (!parray)
return WBEM_E_FAILED;
// Determine the size of the source array. Also make sure that the array
// only has one dimension
unsigned int uDim = SafeArrayGetDim(parray);
if(uDim != 1)
return WBEM_E_FAILED; // Bad array, or too many dimensions
long ix[2] = {0,0};
long lLower, lUpper;
SCODE sc = SafeArrayGetLBound(parray,1,&lLower);
if(sc != S_OK)
return sc;
sc = SafeArrayGetUBound(parray,1,&lUpper);
if(sc != S_OK)
return sc;
int iNumElements = lUpper - lLower +1;
if(iNumElements == 0)
{
// Degenerate case of an empty array - simply create an empty
// copy with a VT_VARIANT type for properties
if (!bQualTypesOnly)
vtPut = VT_VARIANT;
else
{
// For qualifiers, we can hope that we've been given a candidate
// type from an existing value; otherwise we'll just have to make one up.
vtPut = (VT_NULL != requiredVarType) ? requiredVarType : VT_I4;
}
}
else
{
// Use an explicit type if it was supplied
if (VT_NULL != requiredVarType)
{
vtPut = requiredVarType;
}
else
{
// Try an infer one from the array supplied
// Make sure all the elements of the source array are of the same type.
for(ix[0] = lLower; ix[0] <= lUpper && sc == S_OK; ix[0]++)
{
VARIANT var;
VariantInit(&var);
sc = SafeArrayGetElement(parray,ix,&var);
if(sc != S_OK)
return sc;
VARTYPE vt = var.vt;
VariantClear(&var);
if(ix[0] == lLower)
vtPut = vt;
else if (vtPut != vt)
{
// The vartype is different from that previously encountered.
// In general this is an error, but it is possible that we may
// wish to "upcast" to a common vartype in certain circumstances,
// as the automation controller may return heterogenous arrays.
// The only cases in which this applies are:
//
// 1. VT_UI1, VT_I2, VT_I4 should be upcast to the widest
// occurring type in the array.
//
// 2. VT_R4, VT_R8 should be upcast to the widest occuring type
// in the array
//
// All other cases are treated as an error.
bool error = true;
switch (vtPut)
{
case VT_UI1:
if ((VT_I2 == vt) || (VT_I4 == vt))
{
error = false;
vtPut = vt;
}
break;
case VT_I2:
if (VT_UI1 == vt)
{
error = false;
}
else if (VT_I4 == vt)
{
error = false;
vtPut = vt;
}
break;
case VT_I4:
if ((VT_I2 == vt) || (VT_UI1 == vt))
error = false;
break;
case VT_R4:
if (VT_R8 == vt)
{
error = false;
vtPut = vt;
}
break;
case VT_R8:
if (VT_R4 == vt)
error = false;
break;
}
if (error)
return WBEM_E_INVALID_PARAMETER;
}
}
// Having made our best guess, we may need to refine it
// if we are being restricted to qualifier types only
if(bQualTypesOnly)
vtPut = GetAcceptableQualType(vtPut);
}
}
// Create a destination array of equal size
SAFEARRAYBOUND rgsabound[1];
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = iNumElements;
SAFEARRAY * pDestArray = SafeArrayCreate(vtPut,1,rgsabound);
for(ix[0] = lLower; ix[0] <= lUpper && sc == S_OK; ix[0]++)
{
VARIANT var;
VariantInit(&var);
sc = SafeArrayGetElement(parray,ix,&var);
if(sc != S_OK)
{
SafeArrayDestroy (pDestArray);
return sc;
}
if(var.vt != vtPut)
{
// do the conversion to the acceptable type and put that
VARIANT vTemp;
VariantInit(&vTemp);
LCID lcid = GetSystemDefaultLCID();
sc = VariantChangeTypeEx(&vTemp, &var, lcid, 0, vtPut);
if(sc != S_OK)
{
SafeArrayDestroy (pDestArray);
return sc;
}
if(vtPut == VT_BSTR || vtPut == VT_UNKNOWN || vtPut == VT_DISPATCH)
sc = SafeArrayPutElement(pDestArray,ix,(void *)vTemp.bstrVal);
else
sc = SafeArrayPutElement(pDestArray,ix,(void *)&vTemp.lVal);
VariantClear(&vTemp);
}
else
{
if(vtPut == VT_BSTR || vtPut == VT_UNKNOWN || vtPut == VT_DISPATCH)
sc = SafeArrayPutElement(pDestArray,ix,(void *)var.bstrVal);
else
sc = SafeArrayPutElement(pDestArray,ix,(void *)&var.lVal);
}
VariantClear(&var);
}
pDest->vt = (VT_ARRAY | vtPut);
pDest->parray = pDestArray;
return S_OK;
}
//***************************************************************************
//
// HRESULT ConvertArrayRev
//
// Description:
//
// This function is applied to outbound VARIANT arrays in order to transform
// VARIANT arrays so that each member is a VT_VARIANT rather than a simple
// type (VT_BSTR). This is done so that certain automation environments
// (such as VBScript) can correctly interpret array values.
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
HRESULT ConvertArrayRev(VARIANT *pDest, VARIANT *pSrc)
{
if(pSrc == NULL || pDest == NULL || (0 == (pSrc->vt & VT_ARRAY)))
return WBEM_E_FAILED;
// Determine the size of the source array. Also make sure that the array
// only has one dimension
unsigned int uDim = SafeArrayGetDim(pSrc->parray);
if(uDim != 1)
return WBEM_E_FAILED; // Bad array, or too many dimensions
long ix[2] = {0,0};
long lLower, lUpper;
SCODE sc = SafeArrayGetLBound(pSrc->parray,1,&lLower);
if(sc != S_OK)
return sc;
sc = SafeArrayGetUBound(pSrc->parray,1,&lUpper);
if(sc != S_OK)
return sc;
int iNumElements = lUpper - lLower +1;
VARTYPE vtSimple = pSrc->vt & ~VT_ARRAY;
// Create a destination array of equal size
SAFEARRAYBOUND rgsabound[1];
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = iNumElements;
SAFEARRAY *pDestArray = SafeArrayCreate(VT_VARIANT,1,rgsabound);
for(ix[0] = lLower; ix[0] <= lUpper && sc == S_OK; ix[0]++)
{
VARIANT var;
VariantInit(&var);
var.vt = vtSimple;
switch (var.vt)
{
case VT_BSTR:
{
BSTR bstrVal = NULL;
if (S_OK == (sc = SafeArrayGetElement (pSrc->parray, ix, &bstrVal)))
{
var.bstrVal = SysAllocString (bstrVal);
SysFreeString (bstrVal);
}
}
break;
case VT_DISPATCH:
{
IDispatch *pDispatch = NULL;
if (S_OK == (sc = SafeArrayGetElement (pSrc->parray, ix, &pDispatch)))
var.pdispVal = pDispatch;
}
break;
case VT_UNKNOWN:
{
IUnknown *pUnknown = NULL;
if (S_OK == (sc = SafeArrayGetElement (pSrc->parray, ix, &pUnknown)))
var.punkVal = pUnknown;
}
break;
default:
{
// Assume simple integer value
sc = SafeArrayGetElement (pSrc->parray, ix, &(var.lVal));
}
break;
}
if(sc != S_OK)
return sc;
sc = SafeArrayPutElement (pDestArray, ix, &var);
VariantClear(&var);
}
pDest->vt = (VT_ARRAY | VT_VARIANT);
pDest->parray = pDestArray;
return S_OK;
}
//***************************************************************************
//
// HRESULT ConvertBSTRArray
//
// Description:
//
// This function is applied to outbound SAFEARRAY's of BSTRs in order to
// transform then into SAFEARRAY's of VARIANTs (each of type VT_BSTR). This
// is required by scripting environments (such as VBScript0 which do not
// support SAFEARRAY of non-VARIANT types.
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
HRESULT ConvertBSTRArray(SAFEARRAY **ppDest, SAFEARRAY *pSrc)
{
if(pSrc == NULL || ppDest == NULL)
return WBEM_E_FAILED;
// Determine the size of the source array. Also make sure that the array
// only has one dimension
unsigned int uDim = SafeArrayGetDim(pSrc);
if(uDim != 1)
return WBEM_E_FAILED; // Bad array, or too many dimensions
long ix[2] = {0,0};
long lLower, lUpper;
SCODE sc = SafeArrayGetLBound(pSrc,1,&lLower);
if(sc != S_OK)
return sc;
sc = SafeArrayGetUBound(pSrc,1,&lUpper);
if(sc != S_OK)
return sc;
int iNumElements = lUpper - lLower +1;
if(iNumElements == 0)
return WBEM_E_FAILED;
// Create a destination array of equal size
SAFEARRAYBOUND rgsabound[1];
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = iNumElements;
*ppDest = SafeArrayCreate(VT_VARIANT,1,rgsabound);
for(ix[0] = lLower; ix[0] <= lUpper && sc == S_OK; ix[0]++)
{
VARIANT var;
VariantInit(&var);
var.vt = VT_BSTR;
BSTR bstrVal = NULL;
if (S_OK == (sc = SafeArrayGetElement (pSrc, ix, &bstrVal)))
{
var.bstrVal = SysAllocString (bstrVal);
SysFreeString (bstrVal);
}
if(sc != S_OK)
return sc;
sc = SafeArrayPutElement (*ppDest, ix, &var);
VariantClear(&var);
}
return S_OK;
}
//***************************************************************************
//
// HRESULT QualifierVariantChangeType
//
// DESCRIPTION:
//
// Just like VariantChangeType, but deals with arrays as well.
//
// PARAMETERS:
//
// VARIANT pvDest Destination variant
// VARIANT pvSrc Source variant (can be the same as pvDest)
// VARTYPE vtNew The type to coerce to.
//
//***************************************************************************
HRESULT QualifierVariantChangeType (VARIANT* pvDest, VARIANT* pvSrc,
VARTYPE vtNew)
{
HRESULT hres = DISP_E_TYPEMISMATCH;
if(V_VT(pvSrc) == VT_NULL)
{
return VariantCopy(pvDest, pvSrc);
}
if (vtNew & VT_ARRAY)
{
// It's an array, we have to do our own conversion
// ===============================================
if((V_VT(pvSrc) & VT_ARRAY) == 0)
return DISP_E_TYPEMISMATCH;
// Create a new array
SAFEARRAY* psaSrc = V_ARRAY(pvSrc);
SAFEARRAYBOUND aBounds[1];
long lLBound;
SafeArrayGetLBound(psaSrc, 1, &lLBound);
long lUBound;
SafeArrayGetUBound(psaSrc, 1, &lUBound);
aBounds[0].cElements = lUBound - lLBound + 1;
aBounds[0].lLbound = lLBound;
SAFEARRAY* psaDest = SafeArrayCreate(vtNew & ~VT_ARRAY, 1, aBounds);
long lIndex;
for (lIndex = lLBound; lIndex <= lUBound; lIndex++)
{
// Load the initial data element into a VARIANT
// ============================================
VARIANT vSrcEl;
VariantInit (&vSrcEl);
V_VT(&vSrcEl) = V_VT(pvSrc) & ~VT_ARRAY;
SafeArrayGetElement(psaSrc, &lIndex, &V_UI1(&vSrcEl));
// Cast it to the new type
// =======================
if (SUCCEEDED (hres = VariantChangeType(&vSrcEl, &vSrcEl, 0, vtNew & ~VT_ARRAY)))
{
// Put it into the new array
// =========================
if(V_VT(&vSrcEl) == VT_BSTR)
hres = SafeArrayPutElement(psaDest, &lIndex, V_BSTR(&vSrcEl));
else
hres = SafeArrayPutElement(psaDest, &lIndex, &V_UI1(&vSrcEl));
}
VariantClear (&vSrcEl);
if (FAILED(hres))
break;
}
if (lUBound < lIndex)
{
hres = WBEM_S_NO_ERROR;
if(pvDest == pvSrc)
VariantClear(pvSrc);
V_VT(pvDest) = vtNew;
V_ARRAY(pvDest) = psaDest;
}
else
SafeArrayDestroy (psaDest);
}
else
hres = VariantChangeType(pvDest, pvSrc, VARIANT_NOVALUEPROP, vtNew);
return hres;
}
//***************************************************************************
//
// void SetWbemError
//
// DESCRIPTION:
//
// For remoted WBEM COM interfaces, extra error information may be returned
// on the thread as an IWbemClassObject. This routine extracts that object
// (if found) amd stores it in thread local-storage as an ISWbemObject. The
// object can be accessed later using the SWbemLastError coclass.
//
// PARAMETERS:
//
// pService The backpointer to the CSWbemServices (used in case
// we do property/method access on the error object)
//
//***************************************************************************
void SetWbemError (CSWbemServices *pService)
{
EnterCriticalSection (&g_csErrorCache);
if (g_pErrorCache)
g_pErrorCache->SetCurrentThreadError (pService);
LeaveCriticalSection (&g_csErrorCache);
}
//***************************************************************************
//
// void ResetLastErrors
//
// DESCRIPTION:
//
// For remoted WBEM COM interfaces, extra error information may be returned
// on the thread as an IWbemClassObject. This routine clears that error. It
// also clears the ErrorInfo on the thread. This should be called at the
// start of any of the API functions
//
// PARAMETERS:
//
//***************************************************************************
void ResetLastErrors ()
{
SetErrorInfo(0, NULL);
EnterCriticalSection (&g_csErrorCache);
if (g_pErrorCache)
g_pErrorCache->ResetCurrentThreadError ();
LeaveCriticalSection (&g_csErrorCache);
}
//***************************************************************************
//
// HRESULT SetException
//
// Description:
//
// This function fills in an EXECPINFO structure using the supplied HRESULT
// and object name. The former is mapped to the Err.Description property,
// and the latter to the Err.Source property.
//
// Parameters:
//
// pExcepInfo pointer to EXCEPINFO to initialize (must not be NULL)
// hr HRESULT to map to string
// bsObjectName Name of source object that generated the error
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
void SetException (EXCEPINFO *pExcepInfo, HRESULT hr, BSTR bsObjectName)
{
if (pExcepInfo->bstrDescription)
SysFreeString (pExcepInfo->bstrDescription);
pExcepInfo->bstrDescription = MapHresultToWmiDescription (hr);
if (pExcepInfo->bstrSource)
SysFreeString (pExcepInfo->bstrSource);
pExcepInfo->bstrSource = SysAllocString (bsObjectName);
pExcepInfo->scode = hr;
}
//***************************************************************************
//
// HRESULT MapHresultToWmiDescription
//
// Description:
//
// Thin wrapper around the IWbemStatusCodeText implementation. Transforms
// an HRESULT (which may or may not be a WMI-specific error code) into a
// localized user-friendly description.
//
// Parameters:
//
// hr HRESULT to map to string
//
// Return Value:
// BSTR containing the description (or NULL).
//***************************************************************************
BSTR MapHresultToWmiDescription (HRESULT hr)
{
BSTR bsMessageText = NULL;
// Used as our error code translator
IWbemStatusCodeText *pErrorCodeTranslator = NULL;
HRESULT result = CoCreateInstance (CLSID_WbemStatusCodeText, 0, CLSCTX_INPROC_SERVER,
IID_IWbemStatusCodeText, (LPVOID *) &pErrorCodeTranslator);
if (SUCCEEDED (result))
{
HRESULT hrCode = hr;
// Some WBEM success codes become Scripting error codes.
if (wbemErrTimedout == hr)
hrCode = WBEM_S_TIMEDOUT;
else if (wbemErrResetToDefault == hr)
hrCode = WBEM_S_RESET_TO_DEFAULT;
HRESULT sc = pErrorCodeTranslator->GetErrorCodeText(
hrCode, (LCID) 0, WBEMSTATUS_FORMAT_NO_NEWLINE, &bsMessageText);
pErrorCodeTranslator->Release ();
}
return bsMessageText;
}
//***************************************************************************
//
// HRESULT ConvertDispatchToArray
//
// DESCRIPTION:
//
// Attempt to convert from an IDispatch value to a CIM array value (property
// qualifier or context).
//
// PARAMETERS:
//
// pDest Output value
// pSrc Input value
// lCimType CIM Property type (underlying the array) - defaults to
// CIM_ILLEGAL for Qualifier & Context value mappings.
// bIsQual true iff we are mapping for a qualifier
//
// RETURN VALUES:
//
// WBEM_S_NO_ERROR success
// WBEM_E_FAILED otherwise
//
//***************************************************************************
HRESULT ConvertDispatchToArray (
VARIANT *pvDest,
VARIANT *pvSrc,
CIMTYPE lCimType,
BOOL bIsQual,
VARTYPE requiredQualifierType
)
{
HRESULT hr = WBEM_E_FAILED; // Default error
IDispatch * pDispatch = NULL;
/*
* Extract the IDispatch pointer. NB we assume the VT of pSrc is
* VT_DISPATCH (possibly combined with VT_BYREF) for this function to
* have been called.
*/
if (VT_DISPATCH == V_VT(pvSrc))
pDispatch = pvSrc->pdispVal;
else if (pvSrc->ppdispVal)
pDispatch = *(pvSrc->ppdispVal);
if (NULL == pDispatch)
return hr;
// The expected var type of the property
VARTYPE expectedVarType = VT_ERROR;
if (CIM_ILLEGAL != lCimType)
expectedVarType = CimTypeToVtType (lCimType);
CComQIPtr<IDispatchEx> pIDispatchEx (pDispatch);
/*
* We use the IDispatchEx interface to iterate through the properties
* of the interface.
*/
if (pIDispatchEx)
{
/*
* Looks promising, but just check if this isn't one of our objects
*/
CComQIPtr<ISWbemObject> pISWbemObject (pDispatch);
if (!pISWbemObject)
{
/*
* Start by determining how many properties there are so we can create
* a suitable array.
*/
long propertyCount = 0;
DISPID dispId = DISPID_STARTENUM;
DISPPARAMS dispParams;
dispParams.rgvarg = NULL;
dispParams.rgdispidNamedArgs = NULL;
dispParams.cArgs = 0;
dispParams.cNamedArgs = 0;
while (S_OK == pIDispatchEx->GetNextDispID (fdexEnumAll, dispId, &dispId))
{
if ((0 == propertyCount) && (VT_ERROR == expectedVarType))
{
/*
* If we are setting an array value for a context/qualifier, the
* Vartype will not yet be determined - we will use the best
* we can from the first array value.
*/
VARIANT vPropVal;
VariantInit (&vPropVal);
if (SUCCEEDED (pIDispatchEx->InvokeEx (dispId, 0,
DISPATCH_PROPERTYGET, &dispParams, &vPropVal, NULL, NULL)))
{
if (bIsQual)
expectedVarType = GetAcceptableQualType(V_VT(&vPropVal));
else if (VT_DISPATCH == V_VT(&vPropVal))
expectedVarType = VT_UNKNOWN;
else
expectedVarType = V_VT(&vPropVal);
}
VariantClear (&vPropVal);
}
propertyCount++;
}
// Create the safearray - note that it may be empty
SAFEARRAYBOUND rgsaBound;
rgsaBound.cElements = propertyCount;
rgsaBound.lLbound = 0;
SAFEARRAY *pArray = SafeArrayCreate (expectedVarType, 1, &rgsaBound);
if (0 < propertyCount)
{
// Enumerate the DISPIDs on this interface
dispId = DISPID_STARTENUM;
long nextExpectedIndex = 0;
HRESULT enumHr;
wchar_t *stopString = NULL;
/*
* For JScript arrays, the property names are the specified indices of the
* the array; these can be integer indices or they can be strings. We make
* the following requirements of the array indices:
*
* (1) All of the indices are non-negative integers
* (2) The indices start at 0 and are contiguous.
*/
while (S_OK == (enumHr = pIDispatchEx->GetNextDispID (fdexEnumAll, dispId, &dispId)))
{
BSTR memberName = NULL;
if (SUCCEEDED(pIDispatchEx->GetMemberName (dispId, &memberName)))
{
// Check that property name is numeric
long index = wcstol (memberName, &stopString, 10);
if ((0 != wcslen (stopString)))
{
// Failure - cannot convert to integer
SysFreeString (memberName);
memberName = NULL;
break;
}
SysFreeString (memberName);
memberName = NULL;
if (index != nextExpectedIndex)
{
// Failure - non-contiguous array
break;
}
nextExpectedIndex++;
// Extract the property
VARIANT vPropVal;
VariantInit (&vPropVal);
HRESULT hrInvoke;
if (SUCCEEDED (hrInvoke = pIDispatchEx->InvokeEx (dispId, 0,
DISPATCH_PROPERTYGET, &dispParams, &vPropVal, NULL, NULL)))
{
HRESULT hr2 = WBEM_E_FAILED;
// Take care of embedded objects
if ((S_OK == MapToCIMOMObject (&vPropVal)) &&
(S_OK == VariantChangeType (&vPropVal, &vPropVal, 0, expectedVarType)))
{
switch (expectedVarType)
{
case VT_BSTR:
hr2 = SafeArrayPutElement (pArray, &index, (void*)vPropVal.bstrVal);
break;
case VT_UNKNOWN:
if (!bIsQual)
hr2 = SafeArrayPutElement (pArray, &index, (void*)vPropVal.punkVal);
break;
default:
hr2 = SafeArrayPutElement (pArray, &index, (void*)&vPropVal.lVal);
break;
}
}
VariantClear (&vPropVal);
if (FAILED(hr2))
break;
}
else
{
// Failure - couldn't invoke method
break;
}
} // GetMemberName SUCCEEDED
} // while loop
if (S_FALSE == enumHr)
{
// Now construct the new property value using our array
VariantInit (pvDest);
pvDest->vt = VT_ARRAY | expectedVarType;
pvDest->parray = pArray;
hr = S_OK;
}
else
{
// Something went wrong
SafeArrayDestroy (pArray);
}
}
else
{
// Degenerate case of an empty array - simply create an empty
// copy with a VT_VARIANT type for properties
if (!bIsQual)
expectedVarType = VT_VARIANT;
else
{
// For qualifiers, we can hope that we've been given a candidate
// type from an existing value; otherwise we'll just have to make one up.
expectedVarType = (VT_NULL != requiredQualifierType) ? requiredQualifierType :
VT_I4;
}
VariantInit (pvDest);
pvDest->vt = VT_ARRAY | expectedVarType;
pvDest->parray = pArray;
hr = S_OK;
}
}
}
return hr;
}
//***************************************************************************
//
// void MapNulls
//
// Description:
//
// The passing of a "null" value from script (where "null" in VB/VBS and JS
// is the keyword null, and is an undefined variable in Perl) may be interpreted
// by this API as equivalent to a default value for certain method calls.
//
// This function is used to map VT_NULL dispatch parameters to the VB standard
// realization of "missing" parameters, i.e. a VT_ERROR value whose scode is
// DISP_E_PARAMNOTFOUND.
//
// Parameters:
//
// pdispparams the input dispatch parameters
//
//***************************************************************************
void MapNulls (DISPPARAMS FAR* pdispparams)
{
if (pdispparams)
{
for (unsigned int i = 0; i < pdispparams->cArgs; i++)
{
VARIANTARG &v = pdispparams->rgvarg [i];
if (VT_NULL == V_VT(&v))
{
v.vt = VT_ERROR;
v.scode = DISP_E_PARAMNOTFOUND;
}
else if (((VT_VARIANT|VT_BYREF) == V_VT(&v)) &&
(VT_NULL == V_VT(v.pvarVal)))
{
v.vt = VT_ERROR;
v.scode = DISP_E_PARAMNOTFOUND;
}
}
}
}
//***************************************************************************
//
// BSTR FormatAssociatorsQuery
//
// Description:
//
// Takes the parameters to an AssociatorsOf call and constructs a WQL
// query string from them.
//
// Returns: The constructed WQL query; this must be freed using
// SysFreeString by the caller.
//
// pdispparams the input dispatch parameters
//
//***************************************************************************
BSTR FormatAssociatorsQuery
(
BSTR strObjectPath,
BSTR strAssocClass,
BSTR strResultClass,
BSTR strResultRole,
BSTR strRole,
VARIANT_BOOL bClassesOnly,
VARIANT_BOOL bSchemaOnly,
BSTR strRequiredAssocQualifier,
BSTR strRequiredQualifier
)
{
BSTR bsQuery = NULL;
// Get the length of the string:
// associators of {SourceObject} where
// AssocClass = AssocClassName
// ClassDefsOnly
// SchemaOnly
// RequiredAssocQualifier = QualifierName
// RequiredQualifier = QualifierName
// ResultClass = ClassName
// ResultRole = PropertyName
// Role = PropertyName
long queryLength = 1; // Terminating NULL
queryLength += wcslen (WBEMS_QUERY_ASSOCOF) +
wcslen (WBEMS_QUERY_OPENBRACE) +
wcslen (WBEMS_QUERY_CLOSEBRACE) +
wcslen (strObjectPath);
bool needWhere = false;
if ((strAssocClass && (0 < wcslen (strAssocClass))) ||
(strResultClass && (0 < wcslen (strResultClass))) ||
(strResultRole && (0 < wcslen (strResultRole))) ||
(strRole && (0 < wcslen (strRole))) ||
(VARIANT_FALSE != bClassesOnly) ||
(VARIANT_FALSE != bSchemaOnly) ||
(strRequiredAssocQualifier && (0 < wcslen (strRequiredAssocQualifier))) ||
(strRequiredQualifier && (0 < wcslen (strRequiredQualifier))))
{
needWhere = true;
queryLength += wcslen (WBEMS_QUERY_WHERE);
}
if (strAssocClass && (0 < wcslen (strAssocClass)))
queryLength += wcslen (WBEMS_QUERY_ASSOCCLASS) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strAssocClass);
if (strResultClass && (0 < wcslen (strResultClass)))
queryLength += wcslen (WBEMS_QUERY_RESCLASS) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strResultClass);
if (strResultRole && (0 < wcslen (strResultRole)))
queryLength += wcslen (WBEMS_QUERY_RESROLE) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strResultRole);
if (strRole && (0 < wcslen (strRole)))
queryLength += wcslen (WBEMS_QUERY_ROLE) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strRole);
if (VARIANT_FALSE != bClassesOnly)
queryLength += wcslen (WBEMS_QUERY_CLASSDEFS);
if (VARIANT_FALSE != bSchemaOnly)
queryLength += wcslen (WBEMS_QUERY_SCHEMAONLY);
if (strRequiredAssocQualifier && (0 < wcslen (strRequiredAssocQualifier)))
queryLength += wcslen (WBEMS_QUERY_REQASSOCQ) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strRequiredAssocQualifier);
if (strRequiredQualifier && (0 < wcslen (strRequiredQualifier)))
queryLength += wcslen (WBEMS_QUERY_REQQUAL) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strRequiredQualifier);
// Allocate the string and fill it in
bsQuery = SysAllocStringLen (WBEMS_QUERY_ASSOCOF, queryLength);
wcscat (bsQuery, WBEMS_QUERY_OPENBRACE);
wcscat (bsQuery, strObjectPath);
wcscat (bsQuery, WBEMS_QUERY_CLOSEBRACE);
if (needWhere)
{
wcscat (bsQuery, WBEMS_QUERY_WHERE);
if (strAssocClass && (0 < wcslen (strAssocClass)))
{
wcscat (bsQuery, WBEMS_QUERY_ASSOCCLASS);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strAssocClass);
}
if (strResultClass && (0 < wcslen (strResultClass)))
{
wcscat (bsQuery, WBEMS_QUERY_RESCLASS);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strResultClass);
}
if (strResultRole && (0 < wcslen (strResultRole)))
{
wcscat (bsQuery, WBEMS_QUERY_RESROLE);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strResultRole);
}
if (strRole && (0 < wcslen (strRole)))
{
wcscat (bsQuery, WBEMS_QUERY_ROLE);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strRole);
}
if (VARIANT_FALSE != bClassesOnly)
wcscat (bsQuery, WBEMS_QUERY_CLASSDEFS);
if (VARIANT_FALSE != bSchemaOnly)
wcscat (bsQuery, WBEMS_QUERY_SCHEMAONLY);
if (strRequiredAssocQualifier && (0 < wcslen (strRequiredAssocQualifier)))
{
wcscat (bsQuery, WBEMS_QUERY_REQASSOCQ);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strRequiredAssocQualifier);
}
if (strRequiredQualifier && (0 < wcslen (strRequiredQualifier)))
{
wcscat (bsQuery, WBEMS_QUERY_REQQUAL);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strRequiredQualifier);
}
}
return bsQuery;
}
//***************************************************************************
//
// BSTR FormatReferencesQuery
//
// Description:
//
// Takes the parameters to an ReferencesOf call and constructs a WQL
// query string from them.
//
// Returns: The constructed WQL query; this must be freed using
// SysFreeString by the caller.
//
// pdispparams the input dispatch parameters
//
//***************************************************************************
BSTR FormatReferencesQuery
(
BSTR strObjectPath,
BSTR strResultClass,
BSTR strRole,
VARIANT_BOOL bClassesOnly,
VARIANT_BOOL bSchemaOnly,
BSTR strRequiredQualifier
)
{
BSTR bsQuery = NULL;
// Get the length of the string:
// references of {SourceObject} where
// ClassDefsOnly
// SchemaOnly
// RequiredQualifier = QualifierName
// ResultClass = ClassName
// Role = PropertyName
long queryLength = 1; // Terminating NULL
queryLength += wcslen (WBEMS_QUERY_REFOF) +
wcslen (WBEMS_QUERY_OPENBRACE) +
wcslen (WBEMS_QUERY_CLOSEBRACE) +
wcslen (strObjectPath);
bool needWhere = false;
if ((strResultClass && (0 < wcslen (strResultClass))) ||
(strRole && (0 < wcslen (strRole))) ||
(VARIANT_FALSE != bClassesOnly) ||
(VARIANT_FALSE != bSchemaOnly) ||
(strRequiredQualifier && (0 < wcslen (strRequiredQualifier))))
{
needWhere = true;
queryLength += wcslen (WBEMS_QUERY_WHERE);
}
if (strResultClass && (0 < wcslen (strResultClass)))
queryLength += wcslen (WBEMS_QUERY_RESCLASS) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strResultClass);
if (strRole && (0 < wcslen (strRole)))
queryLength += wcslen (WBEMS_QUERY_ROLE) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strRole);
if (VARIANT_FALSE != bClassesOnly)
queryLength += wcslen (WBEMS_QUERY_CLASSDEFS);
if (VARIANT_FALSE != bSchemaOnly)
queryLength += wcslen (WBEMS_QUERY_SCHEMAONLY);
if (strRequiredQualifier && (0 < wcslen (strRequiredQualifier)))
queryLength += wcslen (WBEMS_QUERY_REQQUAL) +
wcslen (WBEMS_QUERY_EQUALS) +
wcslen (strRequiredQualifier);
// Allocate the string and fill it in
bsQuery = SysAllocStringLen (WBEMS_QUERY_REFOF, queryLength);
wcscat (bsQuery, WBEMS_QUERY_OPENBRACE);
wcscat (bsQuery, strObjectPath);
wcscat (bsQuery, WBEMS_QUERY_CLOSEBRACE);
if (needWhere)
{
wcscat (bsQuery, WBEMS_QUERY_WHERE);
if (strResultClass && (0 < wcslen (strResultClass)))
{
wcscat (bsQuery, WBEMS_QUERY_RESCLASS);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strResultClass);
}
if (strRole && (0 < wcslen (strRole)))
{
wcscat (bsQuery, WBEMS_QUERY_ROLE);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strRole);
}
if (VARIANT_FALSE != bClassesOnly)
wcscat (bsQuery, WBEMS_QUERY_CLASSDEFS);
if (VARIANT_FALSE != bSchemaOnly)
wcscat (bsQuery, WBEMS_QUERY_SCHEMAONLY);
if (strRequiredQualifier && (0 < wcslen (strRequiredQualifier)))
{
wcscat (bsQuery, WBEMS_QUERY_REQQUAL);
wcscat (bsQuery, WBEMS_QUERY_EQUALS);
wcscat (bsQuery, strRequiredQualifier);
}
}
return bsQuery;
}
//***************************************************************************
//
// BSTR FormatMultiQuery
//
// Description:
//
// Takes an array of class names and formats a multi query
//
// Returns: The constructed WQL query; this must be freed using
// SysFreeString by the caller.
//
// classArray SAFEARRAY of class names
// iNumElements length of array
//
//***************************************************************************
BSTR FormatMultiQuery (
SAFEARRAY & classArray,
long iNumElements
)
{
BSTR bsQuery = NULL;
long queryLength = 1; // Terminating NULL
queryLength += (iNumElements * wcslen (WBEMS_QUERY_SELECT)) +
((iNumElements - 1) * wcslen (WBEMS_QUERY_GO));
// Work out the string lengths
HRESULT hr = S_OK;
for (long i = 0; i < iNumElements && hr == S_OK; i++)
{
BSTR bsName = NULL;
if (SUCCEEDED(hr = SafeArrayGetElement(&classArray, &i, &bsName)))
{
queryLength += wcslen (bsName);
SysFreeString (bsName);
}
}
if (SUCCEEDED(hr))
{
// Allocate the string and fill it in
bsQuery = SysAllocStringLen (WBEMS_QUERY_SELECT, queryLength);
for (long i = 0; i < iNumElements && hr == S_OK; i++)
{
BSTR bsName = NULL;
if (SUCCEEDED(hr = SafeArrayGetElement(&classArray, &i, &bsName)))
{
if (i > 0)
wcscat (bsQuery, WBEMS_QUERY_SELECT);
wcscat (bsQuery, bsName);
SysFreeString (bsName);
if (i < iNumElements - 1)
wcscat (bsQuery, WBEMS_QUERY_GO);
}
}
}
return bsQuery;
}
//***************************************************************************
//
// EnsureGlobalsInitialized
//
// DESCRIPTION:
//
// Checks whether the g_pErrorCache global pointer is correctly initialized
// and, if not, assigns it appropriately.
//
//***************************************************************************
void EnsureGlobalsInitialized ()
{
// Initialize security
CSWbemSecurity::Initialize ();
EnterCriticalSection (&g_csErrorCache);
// Initlialize the error cache if proof be need be
if ( ! g_pErrorCache )
g_pErrorCache = new CWbemErrorCache ();
LeaveCriticalSection (&g_csErrorCache);
}
#ifdef _RDEBUG
#undef _RPrint
void _RRPrint(int line, const char *file, const char *func,
const char *str, long code, const char *str2)
{
FILE *fp = fopen("c:/out.txt", "a");
fprintf (fp, "%s %s(%d): %s - %s %ld(0x%lx)\n", file, func, line, str, str2, code, code);
fclose(fp);
}
#endif
//***************************************************************************
//
// CanCoerceString
//
// DESCRIPTION:
//
// Attempts to determine whether the supplied BSTR value can be cast
// more tightly to the given CIM type.
//
// PARAMETERS:
// pVal the variant in question
// cimType the casting CIM type
//
// RETURN VALUES:
// TRUE iff the cast is OK.
//
//***************************************************************************
bool CanCoerceString (
const BSTR & bsValue,
WbemCimtypeEnum cimType
)
{
bool result = false;
switch (cimType)
{
case wbemCimtypeReference:
{
CSWbemObjectPath objPath;
result = SUCCEEDED (objPath.put_Path (bsValue));
}
break;
case wbemCimtypeDatetime:
{
CSWbemDateTime dateTime;
result = SUCCEEDED (dateTime.put_Value (bsValue));
}
break;
case wbemCimtypeSint64:
{
__int64 ri64;
result = ReadI64(bsValue, ri64);
}
break;
case wbemCimtypeUint64:
{
unsigned __int64 ri64;
result = ReadUI64(bsValue, ri64);
}
break;
case wbemCimtypeString:
result = true;
break;
}
return result;
}
//***************************************************************************
//
// MapVariantTypeToCimType
//
// DESCRIPTION:
//
// Attempts to come up with a decent CIM type for the supplied VARIANT value.
//
// PARAMETERS:
// pVal the variant in question
// iCimType preferred cimtype (if appropriate)
//
// RETURN VALUES:
// A best match CIM type
//
//***************************************************************************
WbemCimtypeEnum MapVariantTypeToCimType (
VARIANT *pVal,
CIMTYPE iCimType)
{
WbemCimtypeEnum cimType = wbemCimtypeSint32;
if (pVal)
{
VARIANT vTemp;
VariantInit (&vTemp);
if ((VT_EMPTY == V_VT(pVal)) || (VT_NULL == V_VT(pVal)))
cimType = (CIM_ILLEGAL == iCimType) ?
wbemCimtypeSint32 : (WbemCimtypeEnum) iCimType;
else if (((VT_ARRAY | VT_VARIANT) == V_VT(pVal)) ||
((VT_ARRAY | VT_VARIANT | VT_BYREF) == V_VT(pVal)))
{
// Need to dig out the array type
if ((S_OK == ConvertArray(&vTemp, pVal)) &&
(S_OK == MapToCIMOMObject(&vTemp)))
{
// Check for empty array
long lLower, lUpper;
if ((SUCCEEDED(SafeArrayGetLBound(vTemp.parray,1,&lLower))) &&
(SUCCEEDED(SafeArrayGetUBound(vTemp.parray,1,&lUpper))))
{
if (0 == lUpper - lLower + 1)
{
// For an empty array, we use wbemCimtypeSint32 unless
// we have been supplied a valid override
cimType = (CIM_ILLEGAL == iCimType) ?
wbemCimtypeSint32 : (WbemCimtypeEnum) iCimType;
}
else
{
// Pick something that matches our value and override
// as best we can
cimType = GetCIMType (vTemp, iCimType, true, lLower, lUpper);
}
}
}
}
else
{
// Look for an IDispatch that needs to be mapped to an array
if (((VT_DISPATCH == V_VT(pVal)) || ((VT_DISPATCH|VT_BYREF) == V_VT(pVal))))
{
if (S_OK == ConvertDispatchToArray (&vTemp, pVal, cimType & ~CIM_FLAG_ARRAY))
{
// Check for empty array
long lLower, lUpper;
if ((SUCCEEDED(SafeArrayGetLBound(vTemp.parray,1,&lLower))) &&
(SUCCEEDED(SafeArrayGetUBound(vTemp.parray,1,&lUpper))))
{
if (0 == lUpper - lLower + 1)
cimType = (CIM_ILLEGAL == iCimType) ?
wbemCimtypeSint32 : (WbemCimtypeEnum) iCimType;
else
cimType = GetCIMType (vTemp, iCimType, true, lLower, lUpper);
}
}
else
{
// Could be a plain old interface pointer for CIM_IUNKNOWN
if (SUCCEEDED(VariantCopy (&vTemp, pVal)))
{
if (S_OK == MapToCIMOMObject(&vTemp))
cimType = GetCIMType (vTemp, iCimType);
}
}
}
else
{
// The vanilla case
if (SUCCEEDED(VariantCopy (&vTemp, pVal)))
{
if (S_OK == MapToCIMOMObject(&vTemp))
cimType = GetCIMType (vTemp, iCimType);
}
}
}
VariantClear (&vTemp);
}
return cimType;
}
//***************************************************************************
//
// GetCIMType
//
// DESCRIPTION:
//
// Attempts to come up with a decent CIM type for the supplied VARIANT,
// with (optionally) a legal CIMType "serving suggestion" to help resolve
// ambiguities.
//
// Note that this function doesn't deal with empty arrays; that has
// already been taken care of by the caller. It also can assume that the
// array is (VARTYPE) homogeneous, for the same reason.
//
// PARAMETERS:
// pVal the variant in question
// iCimType preferred cimtype (if appropriate, else wbemCimtypeIllegal)
//
// RETURN VALUES:
// A best match CIM type
//
//***************************************************************************
WbemCimtypeEnum GetCIMType (
VARIANT & var,
CIMTYPE iCimType,
bool bIsArray,
long lLBound,
long lUBound
)
{
WbemCimtypeEnum cimType = wbemCimtypeSint32;
switch (V_VT(&var) & ~VT_ARRAY)
{
/*
* Note that prior to this function being called
* we will have transformed VT_DISPATCH's to
* VT_UNKNOWN's.
*/
case VT_UNKNOWN:
{
/*
* Could be an embedded object or just a regular
* IUnknown.
*/
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
CComPtr<IUnknown> pIUnknown;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&pIUnknown)))
{
CComQIPtr<IWbemClassObject> pIWbemClassObject (pIUnknown);
if (!pIWbemClassObject)
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = wbemCimtypeObject;
}
else
{
CComQIPtr<IWbemClassObject> pIWbemClassObject (var.punkVal);
if (pIWbemClassObject)
cimType = wbemCimtypeObject;
}
}
break;
case VT_EMPTY:
case VT_ERROR:
case VT_NULL:
if (CIM_ILLEGAL == iCimType)
cimType = wbemCimtypeSint32; // Pick something
else
cimType = (WbemCimtypeEnum) iCimType; // Anything goes
break;
case VT_VARIANT:
case VT_DISPATCH:
// Can't handle these with CIM types
break;
case VT_I2:
{
cimType = wbemCimtypeSint16; // default
switch (iCimType)
{
case wbemCimtypeSint32:
case wbemCimtypeUint32:
case wbemCimtypeSint64:
case wbemCimtypeUint64:
case wbemCimtypeSint16:
case wbemCimtypeUint16:
case wbemCimtypeChar16:
cimType = (WbemCimtypeEnum) iCimType;
break;
// May be able to use a smaller type but
// only if the value "fits"
case wbemCimtypeSint8:
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
short iVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&iVal)))
{
if ((iVal > 0x7F) || (-iVal > 0x80))
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if ((var.iVal <= 0x7F) && (-var.iVal <= 0x80))
cimType = (WbemCimtypeEnum) iCimType;
}
break;
case wbemCimtypeUint8:
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
short iVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&iVal)))
{
if ((iVal > 0xFF) || (iVal < 0))
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if ((var.iVal <= 0xFF) && (var.iVal >= 0))
cimType = (WbemCimtypeEnum) iCimType;
}
break;
}
}
break;
case VT_I4:
{
cimType = wbemCimtypeSint32; // default
switch (iCimType)
{
case wbemCimtypeSint32:
case wbemCimtypeUint32:
case wbemCimtypeSint64:
case wbemCimtypeUint64:
cimType = (WbemCimtypeEnum) iCimType;
break;
// May be able to use a smaller type but
// only if the value "fits"
case wbemCimtypeSint16:
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
long iVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&iVal)))
{
if ((iVal > 0x7FFF) || (-iVal > 0x8000))
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if ((var.lVal <= 0x7FFF) && (-var.lVal <= 0x8000))
cimType = (WbemCimtypeEnum) iCimType;
}
break;
case wbemCimtypeUint16:
case wbemCimtypeChar16:
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
long iVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&iVal)))
{
if ((iVal > 0xFFFF) || (iVal < 0))
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if ((var.lVal <= 0xFFFF) && (var.lVal >= 0))
cimType = (WbemCimtypeEnum) iCimType;
}
break;
case wbemCimtypeSint8:
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
long iVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&iVal)))
{
if ((iVal > 0x7F) || (-iVal > 0x80))
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if ((var.lVal <= 0x7F) && (-var.lVal <= 0x80))
cimType = (WbemCimtypeEnum) iCimType;
}
break;
case wbemCimtypeUint8:
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
long iVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&iVal)))
{
if ((iVal > 0xFF) || (iVal < 0))
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if ((var.lVal <= 0xFF) && (var.lVal >= 0))
cimType = (WbemCimtypeEnum) iCimType;
}
break;
}
}
break;
case VT_UI1:
if ((wbemCimtypeSint16 == iCimType) ||
(wbemCimtypeUint16 == iCimType) ||
(wbemCimtypeSint8 == iCimType) ||
(wbemCimtypeUint8 == iCimType) ||
(wbemCimtypeChar16 == iCimType) ||
(wbemCimtypeSint32 == iCimType) ||
(wbemCimtypeUint32 == iCimType) ||
(wbemCimtypeSint64 == iCimType) ||
(wbemCimtypeUint64 == iCimType))
cimType = (WbemCimtypeEnum) iCimType;
else
cimType = wbemCimtypeUint8;
break;
case VT_R8:
if (wbemCimtypeReal64 == iCimType)
cimType = (WbemCimtypeEnum) iCimType;
else if (wbemCimtypeReal32 == iCimType)
{
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
double dblVal = 0;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&dblVal)))
{
if (dblVal == (float)dblVal)
bCanBeServingSuggestion = false;
}
else
bCanBeServingSuggestion = false;
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if (var.dblVal == (float)(var.dblVal))
cimType = (WbemCimtypeEnum) iCimType;
}
}
else
cimType = wbemCimtypeReal64;
break;
case VT_R4:
if ((wbemCimtypeReal32 == iCimType) ||
(wbemCimtypeReal64 == iCimType))
cimType = (WbemCimtypeEnum) iCimType;
else
cimType = wbemCimtypeReal32;
break;
case VT_BOOL:
cimType = wbemCimtypeBoolean;
break;
case VT_CY:
case VT_DATE:
cimType = wbemCimtypeString; // Only sensible choice
break;
case VT_BSTR:
{
cimType = wbemCimtypeString; // Unless we get a tighter fit
if ((wbemCimtypeString == iCimType) ||
(wbemCimtypeDatetime == iCimType) ||
(wbemCimtypeReference == iCimType) ||
(wbemCimtypeUint64 == iCimType) ||
(wbemCimtypeSint64 == iCimType))
{
if (bIsArray)
{
long ix = 0;
bool bCanBeServingSuggestion = true;
for(ix = lLBound; ix <= lUBound && bCanBeServingSuggestion; ix++)
{
BSTR bsValue = NULL;
if (SUCCEEDED(SafeArrayGetElement(var.parray,&ix,&bsValue)))
bCanBeServingSuggestion = CanCoerceString (bsValue, (WbemCimtypeEnum) iCimType);
else
bCanBeServingSuggestion = false;
SysFreeString(bsValue);
}
if (bCanBeServingSuggestion)
cimType = (WbemCimtypeEnum) iCimType;
}
else
{
if (CanCoerceString (var.bstrVal, (WbemCimtypeEnum) iCimType))
cimType = (WbemCimtypeEnum) iCimType;
}
}
}
break;
}
return cimType;
}
//***************************************************************************
//
// BOOL ReadI64
//
// DESCRIPTION:
//
// Reads a signed 64-bit value from a string
//
// PARAMETERS:
//
// LPCWSTR wsz String to read from
// __int64& i64 Destination for the value
//
//***************************************************************************
bool ReadI64(LPCWSTR wsz, __int64& ri64)
{
__int64 i64 = 0;
const WCHAR* pwc = wsz;
int nSign = 1;
if(*pwc == L'-')
{
nSign = -1;
pwc++;
}
while(i64 >= 0 && i64 < 0x7FFFFFFFFFFFFFFF / 8 &&
*pwc >= L'0' && *pwc <= L'9')
{
i64 = i64 * 10 + (*pwc - L'0');
pwc++;
}
if(*pwc)
return false;
if(i64 < 0)
{
// Special case --- largest negative number
// ========================================
if(nSign == -1 && i64 == (__int64)0x8000000000000000)
{
ri64 = i64;
return true;
}
return false;
}
ri64 = i64 * nSign;
return true;
}
//***************************************************************************
//
// BOOL ReadUI64
//
// DESCRIPTION:
//
// Reads an unsigned 64-bit value from a string
//
// PARAMETERS:
//
// LPCWSTR wsz String to read from
// unsigned __int64& i64 Destination for the value
//
//***************************************************************************
bool ReadUI64(LPCWSTR wsz, unsigned __int64& rui64)
{
unsigned __int64 ui64 = 0;
const WCHAR* pwc = wsz;
while(ui64 < 0xFFFFFFFFFFFFFFFF / 8 && *pwc >= L'0' && *pwc <= L'9')
{
unsigned __int64 ui64old = ui64;
ui64 = ui64 * 10 + (*pwc - L'0');
if(ui64 < ui64old)
return false;
pwc++;
}
if(*pwc)
{
return false;
}
rui64 = ui64;
return true;
}
HRESULT BuildStringArray (
SAFEARRAY *pArray,
VARIANT & var
)
{
HRESULT hr = WBEM_E_FAILED;
SAFEARRAYBOUND rgsabound;
rgsabound.lLbound = 0;
long lBound = 0, uBound = -1;
if (pArray)
{
SafeArrayGetUBound (pArray, 1, &uBound);
SafeArrayGetLBound (pArray, 1, &lBound);
}
rgsabound.cElements = uBound + 1 - lBound;
SAFEARRAY *pNewArray = SafeArrayCreate (VT_VARIANT, 1, &rgsabound);
if (pNewArray)
{
BSTR bstrName = NULL;
VARIANT nameVar;
VariantInit (&nameVar);
bool ok = true;
/*
* If the source array is not empty, copy it over to the
* new array. Wrap each member in a Variant, and ensure indexing
* begins at 0.
*/
if (0 < rgsabound.cElements)
{
for (long i = 0; (i <= (rgsabound.cElements - 1)) && ok; i++)
{
long j = lBound + i;
if (SUCCEEDED(SafeArrayGetElement (pArray, &j, &bstrName)))
{
BSTR copy = SysAllocString (bstrName);
if (copy)
{
nameVar.vt = VT_BSTR;
nameVar.bstrVal = copy;
if (FAILED(SafeArrayPutElement (pNewArray, &i, &nameVar)))
{
ok = false;
hr = WBEM_E_OUT_OF_MEMORY;
}
SysFreeString (bstrName);
VariantClear (&nameVar);
}
else
{
ok = false;
hr = WBEM_E_OUT_OF_MEMORY;
}
}
else
ok = false;
}
}
if (ok)
{
// Now plug this array into the VARIANT
var.vt = VT_ARRAY | VT_VARIANT;
var.parray = pNewArray;
hr = S_OK;
}
else
{
if (pNewArray)
SafeArrayDestroy (pNewArray);
}
}
else
hr = WBEM_E_OUT_OF_MEMORY;
return hr;
}
HRESULT SetFromStringArray (
SAFEARRAY **ppArray,
VARIANT *pVar
)
{
HRESULT hr = WBEM_E_FAILED;
if ((NULL == pVar) || (VT_EMPTY == V_VT(pVar)) ||
(VT_NULL == V_VT(pVar)))
{
if (*ppArray)
{
SafeArrayDestroy (*ppArray);
*ppArray = NULL;
}
hr = WBEM_S_NO_ERROR;
}
else if (((VT_ARRAY | VT_VARIANT) == V_VT(pVar)) ||
((VT_ARRAY | VT_VARIANT | VT_BYREF) == V_VT(pVar)))
{
VARIANT vTemp;
VariantInit (&vTemp);
if (S_OK == ConvertArray(&vTemp, pVar))
{
// Is it a string array?
if (V_VT(&vTemp) == (VT_ARRAY|VT_BSTR))
{
// Super - grab it out of the temporary VARIANT
if (*ppArray)
SafeArrayDestroy (*ppArray);
*ppArray = vTemp.parray;
vTemp.vt = VT_NULL;
vTemp.parray = NULL;
hr = WBEM_S_NO_ERROR;
}
}
VariantClear(&vTemp);
}
else
{
// Look for an IDispatch that needs to be mapped to an array
if ((VT_DISPATCH == V_VT(pVar))
|| ((VT_DISPATCH|VT_BYREF) == V_VT(pVar)))
{
VARIANT vTemp;
VariantInit (&vTemp);
if (S_OK == ConvertDispatchToArray (&vTemp, pVar, wbemCimtypeString))
{
// Is it a string array?
if (V_VT(&vTemp) == (VT_ARRAY|VT_BSTR))
{
// Super - grab it out of the temporary VARIANT
if (*ppArray)
SafeArrayDestroy (*ppArray);
*ppArray = vTemp.parray;
vTemp.vt = VT_NULL;
vTemp.parray = NULL;
hr = WBEM_S_NO_ERROR;
}
}
VariantClear (&vTemp);
}
}
return hr;
}
//***************************************************************************
//
// bool IsNullOrEmptyVariant
//
// DESCRIPTION:
//
// Given a VARIANT, check if it is essentially null/empty or has
// more than one dimension
//
// PARAMETERS:
//
// pVar variant to check
//
// RETURNS:
// true if and only if the conversion was possible
//
//***************************************************************************
bool IsNullOrEmptyVariant (VARIANT & var)
{
bool result = false;
if ((VT_EMPTY == var.vt) || (VT_NULL == var.vt))
result = true;
else if (VT_ARRAY & var.vt)
{
// Check if array that it is not empty or NULL
if (!(var.parray))
result = true;
else
{
long lBound, uBound;
if ((1 != SafeArrayGetDim (var.parray)) ||
(
SUCCEEDED(SafeArrayGetLBound (var.parray, 1, &lBound)) &&
SUCCEEDED(SafeArrayGetUBound (var.parray, 1, &uBound)) &&
(0 == (uBound - lBound + 1))
)
)
result = true;
}
}
return result;
}
//***************************************************************************
//
// bool RemoveElementFromArray
//
// DESCRIPTION:
//
// Given a SAFEARRAY and an index, remove the element at that index
// and shift left all following elements by one.
//
// PARAMETERS:
//
// array the SAFEARRAY in qeustion
// vt Variant type of elements in array
// iIndex index of element to remove
//
// RETURNS:
// true if and only if the conversion was possible
//
//***************************************************************************
bool RemoveElementFromArray (SAFEARRAY & array, VARTYPE vt, long iIndex)
{
/*
* Note: caller must ensure that the array is within bounds and that the
*
*/
bool result = false;
long lBound, uBound;
if ((1== SafeArrayGetDim (&array)) &&
SUCCEEDED(SafeArrayGetLBound (&array, 1, &lBound)) &&
SUCCEEDED(SafeArrayGetUBound (&array, 1, &uBound)) &&
(0 < (uBound - lBound + 1)) &&
(iIndex <= uBound))
{
bool ok = true;
for (long i = iIndex+1; ok && (i <= uBound); i++)
ok = ShiftLeftElement (array, vt, i);
// Finally Redim to get rid of the last element
if (ok)
{
SAFEARRAYBOUND rgsabound;
rgsabound.lLbound = lBound;
rgsabound.cElements = uBound - lBound;
result = SUCCEEDED(SafeArrayRedim (&array, &rgsabound));
}
else
result = false;
}
return result;
}
//***************************************************************************
//
// bool ShiftLeftElement
//
// DESCRIPTION:
//
// Given a SAFEARRAY and an index, remove the element at that index
// and shift left all following elements by one.
//
// PARAMETERS:
//
// array the SAFEARRAY in question
// vt Variant type of elements in array
// iIndex index of element to remove
//
// RETURNS:
// true if and only if the conversion was possible
//
//***************************************************************************
bool ShiftLeftElement (SAFEARRAY & array, VARTYPE vt, long iIndex)
{
bool result = false;
long iNewIndex = iIndex - 1;
switch (vt)
{
case VT_BSTR:
{
BSTR bstrVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &bstrVal)))
{
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, bstrVal));
SysFreeString (bstrVal);
}
}
break;
case VT_UI1:
{
unsigned char bVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &bVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &bVal));
}
break;
case VT_I2:
{
short iVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &iVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &iVal));
}
break;
case VT_I4:
{
long lVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &lVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &lVal));
}
break;
case VT_R4:
{
float fltVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &fltVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &fltVal));
}
break;
case VT_R8:
{
double dblVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &dblVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &dblVal));
}
break;
case VT_BOOL:
{
VARIANT_BOOL boolVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &boolVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &boolVal));
}
break;
}
return result;
}
bool ShiftElementsToRight (SAFEARRAY & array, VARTYPE vt, long iStartIndex,
long iEndIndex, long iCount)
{
bool result = true;
for (long iIndex = iEndIndex; result && (iIndex >= iStartIndex); iIndex--)
{
long iNewIndex = iIndex + iCount;
switch (vt)
{
case VT_BSTR:
{
BSTR bstrVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &bstrVal)))
{
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, bstrVal));
SysFreeString (bstrVal);
}
}
break;
case VT_UI1:
{
unsigned char bVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &bVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &bVal));
}
break;
case VT_I2:
{
short iVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &iVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &iVal));
}
break;
case VT_I4:
{
long lVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &lVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &lVal));
}
break;
case VT_R4:
{
float fltVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &fltVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &fltVal));
}
break;
case VT_R8:
{
double dblVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &dblVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &dblVal));
}
break;
case VT_BOOL:
{
VARIANT_BOOL boolVal;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &boolVal)))
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, &boolVal));
}
break;
case VT_DISPATCH:
{
IDispatch *pdispVal = NULL;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &pdispVal)))
{
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, pdispVal));
if (pdispVal)
pdispVal->Release ();
}
}
break;
case VT_UNKNOWN:
{
IUnknown *punkVal = NULL;
if (SUCCEEDED(SafeArrayGetElement (&array, &iIndex, &punkVal)))
{
result = SUCCEEDED(SafeArrayPutElement (&array, &iNewIndex, punkVal));
if (punkVal)
punkVal->Release ();
}
}
break;
}
}
return result;
}
//***************************************************************************
//
// bool MatchBSTR
//
// DESCRIPTION:
//
// Given a VARIANT and a BSTR, find out whether the BSTR matches the
// VARIANT value (either the complete value or a member thereof).
//
// PARAMETERS:
//
// var the VARIANT in question
// bstrVal the BSTR in question
//
// RETURNS:
// true if and only if the match was made
//
//***************************************************************************
bool MatchBSTR (VARIANT & var, BSTR & bstrVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_BSTR;
srcVar.bstrVal = SysAllocString (bstrVal);
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
VariantClear (&srcVar);
return result;
}
//***************************************************************************
//
// bool MatchUI1
//
// DESCRIPTION:
//
// Given a VARIANT and a UI1, find out whether the UI1 matches the
// VARIANT value (either the complete value or a member thereof).
//
// PARAMETERS:
//
// var the VARIANT in question
// bstrVal the BSTR in question
//
// RETURNS:
// true if and only if the match was made
//
//***************************************************************************
bool MatchUI1 (VARIANT & var, unsigned char bVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_UI1;
srcVar.bVal = bVal;
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
return result;
}
bool MatchBool (VARIANT & var, VARIANT_BOOL boolVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_BOOL;
srcVar.boolVal = boolVal;
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
return result;
}
bool MatchI2 (VARIANT & var, short iVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_I2;
srcVar.iVal = iVal;
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
return result;
}
bool MatchI4 (VARIANT & var, long lVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_I4;
srcVar.lVal = lVal;
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
return result;
}
bool MatchR4 (VARIANT & var, float fltVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_R4;
srcVar.fltVal = fltVal;
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
return result;
}
bool MatchR8 (VARIANT & var, double dblVal)
{
bool result = false;
// Coerce into the underlying type of the variant
VARIANT srcVar, dstVar;
srcVar.vt = VT_R8;
srcVar.dblVal = dblVal;
VariantInit (&dstVar);
if (SUCCEEDED (VariantChangeType (&dstVar, &srcVar, 0, var.vt & ~VT_ARRAY)))
{
result = MatchValue (var, dstVar);
VariantClear (&dstVar);
}
return result;
}
//***************************************************************************
//
// bool MatchValue
//
// DESCRIPTION:
//
// Given a VARIANT (which may or may not be an array) and a second VARIANT
// (which is not an array) determine whether the second value matches the
// first or an element of the first.
//
// ASSUMPTIONS
//
// 1. The two VARIANTS have the same underlying type
// 2. The second VARIANT cannot be an array
//
// PARAMETERS:
//
// var the VARIANT in question
// bstrVal the BSTR in question
//
// RETURNS:
// true if and only if the match was made
//
//***************************************************************************
bool MatchValue (VARIANT &var1, VARIANT &var2)
{
bool result = false;
bool bIsArray = (var1.vt & VT_ARRAY) ? true : false;
if (bIsArray)
{
long lBound, uBound;
if (var1.parray && (1== SafeArrayGetDim (var1.parray)) &&
SUCCEEDED(SafeArrayGetLBound (var1.parray, 1, &lBound)) &&
SUCCEEDED(SafeArrayGetUBound (var1.parray, 1, &uBound)) &&
(0 < (uBound - lBound + 1)))
{
// Break out on first match
for (long i = lBound; !result && (i <= uBound); i++)
{
switch (var1.vt & ~VT_ARRAY)
{
case VT_BSTR:
{
BSTR bstrVal = NULL;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &bstrVal)))
{
result = (0 == wcscmp (bstrVal, var2.bstrVal));
SysFreeString (bstrVal);
}
}
break;
case VT_UI1:
{
unsigned char bVal;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &bVal)))
result = (bVal == var2.bVal);
}
break;
case VT_I2:
{
short iVal;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &iVal)))
result = (iVal == var2.iVal);
}
break;
case VT_I4:
{
long lVal;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &lVal)))
result = (lVal == var2.lVal);
}
break;
case VT_R4:
{
float fltVal;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &fltVal)))
result = (fltVal == var2.fltVal);
}
break;
case VT_R8:
{
double dblVal;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &dblVal)))
result = (dblVal == var2.dblVal);
}
break;
case VT_BOOL:
{
VARIANT_BOOL boolVal;
if (SUCCEEDED(SafeArrayGetElement (var1.parray, &i, &boolVal)))
result = (boolVal == var2.boolVal);
}
break;
}
}
}
}
else
{
switch (var1.vt)
{
case VT_BSTR:
result = (0 == wcscmp (var1.bstrVal, var2.bstrVal));
break;
case VT_UI1:
result = (var1.bVal == var2.bVal);
break;
case VT_I2:
result = (var1.iVal == var2.iVal);
break;
case VT_I4:
result = (var1.lVal == var2.lVal);
break;
case VT_R4:
result = (var1.fltVal == var2.fltVal);
break;
case VT_R8:
result = (var1.dblVal == var2.dblVal);
break;
case VT_BOOL:
result = (var1.boolVal == var2.boolVal);
break;
}
}
return result;
}
//***************************************************************************
//
// HRESULT WmiVariantChangeType
//
// DESCRIPTION:
//
// Given a VARIANT value and a desired CIM type, cast the value to a VARIANT
// which will be accepted when supplied to CIMOM for a property of that type.
//
// PARAMETERS:
//
// vOut the cast value
// pvIn the value to be cast
// lCimType the required CIM type
//
// RETURNS:
// S_OK if succeeded, WBEM_E_TYPE_MISMATCH if not
//
//***************************************************************************
HRESULT WmiVariantChangeType (
VARIANT & vOut,
VARIANT *pvIn,
CIMTYPE lCimType
)
{
HRESULT hr = WBEM_E_TYPE_MISMATCH;
VariantInit (&vOut);
// First we check for a NULL value, as these are easy
if ((NULL == pvIn) || VT_EMPTY == V_VT(pvIn) || VT_NULL == V_VT(pvIn) ||
((VT_ERROR == V_VT(pvIn)) && (DISP_E_PARAMNOTFOUND == pvIn->scode)))
{
vOut.vt = VT_NULL;
hr = S_OK;
}
else
{
// The kind of variant we will need to construct
VARTYPE vtOut = CimTypeToVtType (lCimType);
// The VARTYPE we've been given
VARTYPE vtIn = V_VT(pvIn);
if (vtOut == vtIn)
{
// Life is easy
hr = VariantCopy (&vOut, pvIn);
}
else
{
// Types do not match - we have some work to to
if (CIM_FLAG_ARRAY & lCimType)
{
/*
* Check for a regular SAFEARRAY type value first; if that fails
* then look for an IDispatch-style array value.
*/
if (((VT_ARRAY | VT_VARIANT) == vtIn) ||
((VT_ARRAY | VT_VARIANT | VT_BYREF) == vtIn))
{
SAFEARRAY *parray = (VT_BYREF & vtIn) ? *(pvIn->pparray) : pvIn->parray;
hr = WmiConvertSafeArray (vOut, parray, lCimType & ~VT_ARRAY);
}
else if ((VT_DISPATCH == vtIn) || ((VT_DISPATCH|VT_BYREF) == vtIn))
{
CComPtr<IDispatch> pIDispatch =
(VT_BYREF & vtIn) ? *(pvIn->ppdispVal) : pvIn->pdispVal;
hr = WmiConvertDispatchArray (vOut, pIDispatch, lCimType & ~VT_ARRAY);
}
}
else
{
switch (lCimType)
{
case wbemCimtypeSint8:
{
/*
* These are represented by
* a VT_I2, but we need to be careful about sign
* extension from shorter types taking us "out of range".
*/
if (SUCCEEDED(hr = VariantChangeType (&vOut, pvIn, 0, vtOut)))
{
// Did we get sign extended?
if ((VT_UI1 == vtIn) || (VT_BOOL == vtIn))
vOut.lVal &= 0x000000FF;
}
else
{
// If we can't change the type, try the one we're given
hr = VariantCopy (&vOut, pvIn);
}
}
break;
case wbemCimtypeSint64:
case wbemCimtypeUint64:
{
/*
* These types are realized as VT_BSTR in CIM terms, which means
* that VariantChangeType will almost always succeed but not
* leave us with a valid numeric value. To be consistent with other
* numeric types we should round up floating/double
* values to the next largest integer (as is done by VariantChangeType
* for VT_R8 to numeric conversion).
*/
if (VT_R8 == V_VT(pvIn))
{
if (SUCCEEDED(hr = VariantCopy (&vOut, pvIn)))
{
// Round it up
vOut.dblVal = ceil (vOut.dblVal);
// Convert to string
int dec = 0;
int sign = 0;
char *pDbl = _fcvt (vOut.dblVal, 0, &dec, &sign);
if (pDbl)
{
size_t len = strlen (pDbl);
/*
* Having rounded up to an integer, we really expect
* there to be no fractional component to the number
* returned by _fcvt.
*/
if (dec == len)
{
/*
* Now convert to a wide string - remember the
* sign bit!
*/
if (0 != sign)
len += 1;
wchar_t *pValue = new wchar_t [len + 1];
if (pValue)
{
if (0 != sign)
{
pValue [0] = L'-';
mbstowcs (pValue+1, pDbl, len);
}
else
mbstowcs (pValue, pDbl, len);
pValue [len] = NULL;
// Now set it in the variant
vOut.bstrVal = SysAllocString (pValue);
vOut.vt = VT_BSTR;
delete [] pValue;
hr = S_OK;
}
}
}
}
}
else
hr = VariantChangeType (&vOut, pvIn, 0, vtOut);
if (FAILED(hr))
{
// If we can't change the type, try the one we're given
hr = VariantCopy (&vOut, pvIn);
}
}
break;
case wbemCimtypeUint8:
case wbemCimtypeSint16:
case wbemCimtypeSint32:
case wbemCimtypeReal32:
case wbemCimtypeReal64:
case wbemCimtypeString:
case wbemCimtypeDatetime:
case wbemCimtypeBoolean:
case wbemCimtypeReference:
{
/*
* These types have a "prefect" fit to their
* corresponding Variant type.
*/
if (FAILED(hr = VariantChangeType (&vOut, pvIn, 0, vtOut)))
hr = VariantCopy (&vOut, pvIn);
}
break;
case wbemCimtypeUint32:
{
if (FAILED(hr = VariantChangeType (&vOut, pvIn, 0, vtOut)))
{
/*
* Watch for the case where we have been given a VT_R8
* in lieu of a "large" unsigned 32-bit integer value.
*/
if (VT_R8 == V_VT(pvIn))
{
// Is this "really" an integer?
if (floor (pvIn->dblVal) == ceil(pvIn->dblVal))
{
// Fool it by casting to a UI4 - all we need is the bit pattern
if (SUCCEEDED(hr = VarUI4FromR8 (pvIn->dblVal, (ULONG*)&vOut.lVal)))
vOut.vt = VT_I4;
}
}
}
// If no joy thus far, just copy and have done with it
if (FAILED(hr))
hr = VariantCopy (&vOut, pvIn);
}
break;
case wbemCimtypeChar16:
case wbemCimtypeUint16:
{
/*
* These types are represented by
* a VT_I4, but we need to be careful about sign
* extension taking us "out of range".
*/
if (SUCCEEDED(hr = VariantChangeType (&vOut, pvIn, 0, vtOut)))
{
// Did we get sign extended from a shorter type?
if ((VT_I2 == vtIn) || (VT_UI1 == vtIn) || (VT_BOOL == vtIn))
vOut.lVal &= 0x0000FFFF;
}
else
hr = VariantCopy (&vOut, pvIn);
}
break;
case wbemCimtypeObject:
{
/*
* We're looking for an embedded object
*/
if (SUCCEEDED(hr = VariantCopy (&vOut, pvIn)))
hr = MapToCIMOMObject (&vOut);
}
break;
}
}
}
}
return hr;
}
//***************************************************************************
//
// HRESULT WmiConvertSafeArray
//
// Description:
//
// This function is applied to VARIANT arrays in order to check for certain
// restrictions imposed by CIMOM (e.g. they must be homogeneous) or perform
// conversions (certain VARIANT types have to be mapped to acceptable CIMOM
// types).
//
// Return Value:
// HRESULT S_OK if successful
//***************************************************************************
HRESULT WmiConvertSafeArray(VARIANT &vOut, SAFEARRAY *parray, CIMTYPE lCimType)
{
HRESULT hr = WBEM_E_FAILED;
VARTYPE vtPut; // The underlying type of the target array
long lLower, lUpper;
if (parray)
{
if (GetSafeArrayDimensions (*parray, lLower, lUpper))
{
int iNumElements = lUpper - lLower +1;
/*
* For empty arrays, it suffices to create a empty array of
* VT_VARIANT's. Otherwise we need to build what WMI is expecting.
*/
vtPut = (iNumElements == 0) ? VT_VARIANT : CimTypeToVtType (lCimType);
// Now create a destination array of the required size
SAFEARRAYBOUND rgsabound[1];
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = iNumElements;
SAFEARRAY * pDestArray = SafeArrayCreate(vtPut, 1, rgsabound);
if (pDestArray)
{
bool ok = true;
for(long i = lLower; (i <= lUpper) && ok; i++)
{
VARIANT var;
VariantInit(&var);
if (SUCCEEDED(SafeArrayGetElement (parray, &i, &var)))
{
// do the conversion to the acceptable type and put that
VARIANT vWMI;
VariantInit(&vWMI);
if (SUCCEEDED(hr = WmiVariantChangeType (vWMI, &var, lCimType)))
{
if(V_VT(&vWMI) == VT_BSTR || V_VT(&vWMI) == VT_UNKNOWN || V_VT(&vWMI) == VT_DISPATCH)
ok = (S_OK == SafeArrayPutElement(pDestArray, &i, (void *)vWMI.bstrVal));
else
ok = (S_OK == SafeArrayPutElement(pDestArray, &i, (void *)&vWMI.lVal));
}
VariantClear (&vWMI);
}
else
ok = false;
VariantClear(&var);
}
if (!ok)
{
SafeArrayDestroy (pDestArray);
}
else
{
vOut.vt = (VT_ARRAY | vtPut);
vOut.parray = pDestArray;
hr = S_OK;
}
}
else
hr = WBEM_E_OUT_OF_MEMORY;
}
}
return hr;
}
//***************************************************************************
//
// HRESULT WmiConvertDispatchArray
//
// DESCRIPTION:
//
// Attempt to convert from an IDispatch value to a CIM array value (property
// qualifier or context).
//
// PARAMETERS:
//
// pDest Output value
// pSrc Input value
// lCimType CIM Property type (underlying the array) - defaults to
// CIM_ILLEGAL for Qualifier & Context value mappings.
// bIsQual true iff we are mapping for a qualifier
//
// RETURN VALUES:
//
// WBEM_S_NO_ERROR success
// WBEM_E_FAILED otherwise
//
//***************************************************************************
HRESULT WmiConvertDispatchArray (
VARIANT &vOut,
CComPtr<IDispatch> & pIDispatch,
CIMTYPE lCimType
)
{
HRESULT hr = WBEM_E_FAILED; // Default error
if (pIDispatch)
{
/*
* Looking for an IDispatchEx to iterate through the properties
* of the array.
*/
CComQIPtr<IDispatchEx> pIDispatchEx (pIDispatch);
if (pIDispatchEx)
{
/*
* Looks promising, but just check if this isn't one of our objects
*/
CComQIPtr<ISWbemObject> pISWbemObject (pIDispatch);
if (!pISWbemObject)
{
/*
* Start by determining how many properties there are so we can create
* a suitable array.
*/
long iNumElements = 0;
DISPID dispId = DISPID_STARTENUM;
while (S_OK == pIDispatchEx->GetNextDispID (fdexEnumAll, dispId, &dispId))
iNumElements++;
/*
* For empty arrays, it suffices to create a empty array of
* VT_VARIANT's. Otherwise we need to build what WMI is expecting.
*/
VARTYPE vtPut = (iNumElements == 0) ? VT_VARIANT : CimTypeToVtType (lCimType);
// Create the safearray - note that it may be empty
SAFEARRAYBOUND rgsaBound;
rgsaBound.cElements = iNumElements;
rgsaBound.lLbound = 0;
SAFEARRAY *pDestArray = SafeArrayCreate (vtPut, 1, &rgsaBound);
if (pDestArray)
{
bool ok = true;
if (0 < iNumElements)
{
// Enumerate the DISPIDs on this interface
dispId = DISPID_STARTENUM;
DISPPARAMS dispParams;
dispParams.rgvarg = NULL;
dispParams.rgdispidNamedArgs = NULL;
dispParams.cArgs = 0;
dispParams.cNamedArgs = 0;
long nextExpectedIndex = 0;
HRESULT enumHr;
wchar_t *stopString = NULL;
/*
* For JScript arrays, the property names are the specified indices of the
* the array; these can be integer indices or they can be strings. We make
* the following requirements of the array indices:
*
* (1) All of the indices are non-negative integers
* (2) The indices start at 0 and are contiguous.
*/
while (ok && SUCCEEDED(enumHr = pIDispatchEx->GetNextDispID (fdexEnumAll, dispId, &dispId)))
{
if (S_FALSE == enumHr)
{
// We have reached the end
break;
}
CComBSTR memberName;
if (SUCCEEDED(pIDispatchEx->GetMemberName (dispId, &memberName)))
{
// Check that property name is numeric
long i = wcstol (memberName, &stopString, 10);
if ((0 != wcslen (stopString)))
{
// Failure - cannot convert to integer
ok = false;
}
else if (i != nextExpectedIndex)
{
// Failure - non-contiguous array
ok = false;
}
else
{
nextExpectedIndex++;
// Extract the property
VARIANT var;
VariantInit (&var);
if (SUCCEEDED (pIDispatchEx->InvokeEx (dispId, 0,
DISPATCH_PROPERTYGET, &dispParams, &var, NULL, NULL)))
{
// do the conversion to the acceptable type and put that
VARIANT vWMI;
VariantInit(&vWMI);
if (SUCCEEDED(hr = WmiVariantChangeType (vWMI, &var, lCimType)))
{
if(V_VT(&vWMI) == VT_BSTR || V_VT(&vWMI) == VT_UNKNOWN || V_VT(&vWMI) == VT_DISPATCH)
ok = (S_OK == SafeArrayPutElement(pDestArray, &i, (void *)vWMI.bstrVal));
else
ok = (S_OK == SafeArrayPutElement(pDestArray, &i, (void *)&vWMI.lVal));
}
VariantClear (&vWMI);
}
else
ok = false;
}
}
else
{
// Failure - couldn't invoke method
ok = false;
}
}
}
if (ok)
{
// Now construct the new property value using our array
vOut.vt = VT_ARRAY | vtPut;
vOut.parray = pDestArray;
hr = S_OK;
}
else
SafeArrayDestroy (pDestArray);
}
else
hr = WBEM_E_OUT_OF_MEMORY;
}
}
}
return hr;
}
bool GetSafeArrayDimensions (SAFEARRAY &sArray, long &lLower, long &lUpper)
{
bool result = false;
// Must be 1-dimensional
if (1 == SafeArrayGetDim(&sArray))
{
if (SUCCEEDED(SafeArrayGetLBound(&sArray,1,&lLower)) &&
SUCCEEDED(SafeArrayGetUBound(&sArray,1,&lUpper)))
result = true;
}
return result;
}
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