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560 lines
15 KiB
560 lines
15 KiB
/*===================================================================
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Microsoft Denali
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Microsoft Confidential.
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Copyright 1996 Microsoft Corporation. All Rights Reserved.
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Component: IDispatch implementation
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File: Dispatch.h
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Owner: DGottner
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This file contains our implementation of IDispatch
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===================================================================*/
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#include "denpre.h"
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#pragma hdrstop
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#include "dispatch.h"
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#include "asptlb.h"
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#include "memchk.h"
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#ifdef USE_LOCALE
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extern DWORD g_dwTLS;
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#endif
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CComTypeInfoHolder CDispatchImpl<IApplicationObject>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IASPError>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IReadCookie>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IRequest>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IRequestDictionary>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IResponse>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IScriptingContext>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IServer>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<ISessionObject>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IStringList>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IVariantDictionary>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IWriteCookie>::gm_tih = {&__uuidof(T), &LIBID_ASPTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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CComTypeInfoHolder CDispatchImpl<IASPObjectContext>::gm_tih = {&__uuidof(T), &LIBID_ASPObjectContextTypeLibrary, 3, 0, NULL, 0, NULL, 0};
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/*===================================================================
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CDispatch::CDispatch
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CDispatch::~CDispatch
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Parameters (Constructor):
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pUnkObj pointer to the object we're in.
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pUnkOuter LPUNKNOWN to which we delegate.
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===================================================================*/
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CDispatch::CDispatch()
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{
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m_pITINeutral = NULL;
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m_pITypeLib = NULL;
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m_pGuidDispInterface = NULL;
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}
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void CDispatch::Init
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(
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const GUID &GuidDispInterface,
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const ITypeLib *pITypeLib // = NULL
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)
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{
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m_pGuidDispInterface = &GuidDispInterface;
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m_pITypeLib = const_cast<ITypeLib *>(pITypeLib);
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}
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CDispatch::~CDispatch(void)
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{
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ReleaseInterface(m_pITINeutral);
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return;
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}
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/*===================================================================
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CDispatch::GetTypeInfoCount
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Returns the number of type information (ITypeInfo) interfaces
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that the object provides (0 or 1).
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Parameters:
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pcInfo UINT * to the location to receive
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the count of interfaces.
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Return Value:
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HRESULT S_OK or a general error code.
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===================================================================*/
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STDMETHODIMP CDispatch::GetTypeInfoCount(UINT *pcInfo)
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{
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// We implement GetTypeInfo so return 1
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*pcInfo = 1;
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return S_OK;
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}
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/*===================================================================
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CDispatch::GetTypeInfo
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Retrieves type information for the automation interface. This
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is used anywhere that the right ITypeInfo interface is needed
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for whatever LCID is applicable. Specifically, this is used
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from within GetIDsOfNames and Invoke.
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Parameters:
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itInfo UINT reserved. Must be zero.
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lcid LCID providing the locale for the type
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information. If the object does not support
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localization, this is ignored.
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ppITypeInfo ITypeInfo ** in which to store the ITypeInfo
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interface for the object.
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Return Value:
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HRESULT S_OK or a general error code.
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===================================================================*/
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STDMETHODIMP CDispatch::GetTypeInfo(
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UINT itInfo,
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LCID lcid,
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ITypeInfo **ppITypeInfo
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)
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{
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HRESULT hr;
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ITypeInfo **ppITI = NULL;
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if (0 != itInfo)
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return ResultFromScode(TYPE_E_ELEMENTNOTFOUND);
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if (NULL == ppITypeInfo)
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return ResultFromScode(E_POINTER);
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*ppITypeInfo = NULL;
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// We don't internationalize the type library, so
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// we always return the same one, regardless of the locale.
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ppITI = &m_pITINeutral;
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//Load a type lib if we don't have the information already.
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if (NULL == *ppITI)
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{
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ITypeLib *pITL;
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// If a specific TypeLib was given at init time use that, otherwise default to the main one
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if (m_pITypeLib == NULL)
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pITL = Glob(pITypeLibDenali);
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else
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pITL = m_pITypeLib;
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Assert(pITL != NULL);
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hr = pITL->GetTypeInfoOfGuid(*m_pGuidDispInterface, ppITI);
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if (FAILED(hr))
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return hr;
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// Save the type info in a class member, so we don't have
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// go through all this work again;
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m_pITINeutral = *ppITI;
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}
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/*
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* Note: the type library is still loaded since we have
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* an ITypeInfo from it.
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*/
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(*ppITI)->AddRef();
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*ppITypeInfo = *ppITI;
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return S_OK;
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}
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/*===================================================================
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CDispatch::GetIDsOfNames
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Converts text names into DISPIDs to pass to Invoke
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Parameters:
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riid REFIID reserved. Must be IID_NULL.
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rgszNames OLECHAR ** pointing to the array of names to be mapped.
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cNames UINT number of names to be mapped.
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lcid LCID of the locale.
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rgDispID DISPID * caller allocated array containing IDs
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corresponging to those names in rgszNames.
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Return Value:
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HRESULT S_OK or a general error code.
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===================================================================*/
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STDMETHODIMP CDispatch::GetIDsOfNames
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(
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REFIID riid,
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OLECHAR **rgszNames,
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UINT cNames,
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LCID lcid,
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DISPID *rgDispID
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)
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{
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HRESULT hr;
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ITypeInfo *pTI;
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if (IID_NULL != riid)
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return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
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//Get the right ITypeInfo for lcid.
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hr = GetTypeInfo(0, lcid, &pTI);
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if (SUCCEEDED(hr))
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{
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hr = DispGetIDsOfNames(pTI, rgszNames, cNames, rgDispID);
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pTI->Release();
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}
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return hr;
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}
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/*===================================================================
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CDispatch::Invoke
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Calls a method in the dispatch interface or manipulates a property.
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Parameters:
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dispID DISPID of the method or property of interest.
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riid REFIID reserved, must be IID_NULL.
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lcid LCID of the locale.
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wFlags USHORT describing the context of the invocation.
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pDispParams DISPPARAMS * to the array of arguments.
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pVarResult VARIANT * in which to store the result. Is
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NULL if the caller is not interested.
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pExcepInfo EXCEPINFO * to exception information.
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puArgErr UINT * in which to store the index of an
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invalid parameter if DISP_E_TYPEMISMATCH
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is returned.
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Return Value:
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HRESULT S_OK or a general error code.
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===================================================================*/
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STDMETHODIMP CDispatch::Invoke
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(
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DISPID dispID,
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REFIID riid,
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LCID lcid,
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unsigned short wFlags,
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DISPPARAMS *pDispParams,
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VARIANT *pVarResult,
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EXCEPINFO *pExcepInfo,
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UINT *puArgErr
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)
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{
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HRESULT hr;
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ITypeInfo *pTI;
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LANGID langID = PRIMARYLANGID(lcid);
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// riid is supposed to be IID_NULL always
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if (IID_NULL != riid)
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return ResultFromScode(DISP_E_UNKNOWNINTERFACE);
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// Get the ITypeInfo for lcid
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hr = GetTypeInfo(0, lcid, &pTI);
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if (FAILED(hr))
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return hr;
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#ifdef USE_LOCALE
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// This saves the language ID for this thread
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TlsSetValue(g_dwTLS, &langID);
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#endif
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// Clear exceptions
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SetErrorInfo(0L, NULL);
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// VBScript does not distinguish between a propget and a method
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// implement that behavior for other languages.
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//
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if (wFlags & (DISPATCH_METHOD | DISPATCH_PROPERTYGET))
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wFlags |= DISPATCH_METHOD | DISPATCH_PROPERTYGET;
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// This is exactly what DispInvoke does--so skip the overhead.
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// With dual interface, "this" is the address of the object AND its dispinterface
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//
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hr = pTI->Invoke(this, dispID, wFlags,
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pDispParams, pVarResult, pExcepInfo, puArgErr);
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// Exception handling is done within ITypeInfo::Invoke
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pTI->Release();
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return hr;
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}
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/*===================================================================
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CSupportErrorInfo::CSupportErrorInfo
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Default constructor so that the Init method can be used.
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Parameters (Constructor):
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pObj PCResponse of the object we're in.
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pUnkOuter LPUNKNOWN to which we delegate.
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===================================================================*/
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CSupportErrorInfo::CSupportErrorInfo(void)
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: m_pUnkObj(NULL),
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m_pUnkOuter(NULL)
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{
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}
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/*===================================================================
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CSupportErrorInfo::CSupportErrorInfo
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Parameters (Constructor):
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pObj PCResponse of the object we're in.
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pUnkOuter LPUNKNOWN to which we delegate.
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GuidDispInterface GUID of dispatch interface.
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===================================================================*/
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CSupportErrorInfo::CSupportErrorInfo(IUnknown *pUnkObj, IUnknown *pUnkOuter, const GUID &GuidDispInterface)
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{
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m_pUnkObj = pUnkObj;
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m_pUnkOuter = (pUnkOuter == NULL)? pUnkObj : pUnkOuter;
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m_pGuidDispInterface = &GuidDispInterface;
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}
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/*===================================================================
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void CSupportErrorInfo::Init
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Parameters:
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pObj PCResponse of the object we're in.
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pUnkOuter LPUNKNOWN to which we delegate.
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GuidDispInterface GUID of dispatch interface.
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Returns:
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Nothing
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===================================================================*/
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void CSupportErrorInfo::Init(IUnknown *pUnkObj, IUnknown *pUnkOuter, const GUID &GuidDispInterface)
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{
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m_pUnkObj = pUnkObj;
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m_pUnkOuter = (pUnkOuter == NULL)? pUnkObj : pUnkOuter;
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m_pGuidDispInterface = &GuidDispInterface;
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}
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/*===================================================================
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CSupportErrorInfo::QueryInterface
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CSupportErrorInfo::AddRef
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CSupportErrorInfo::Release
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IUnknown members for CSupportErrorInfo object.
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===================================================================*/
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STDMETHODIMP CSupportErrorInfo::QueryInterface(const GUID &Iid, void **ppvObj)
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{
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return m_pUnkOuter->QueryInterface(Iid, ppvObj);
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}
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STDMETHODIMP_(ULONG) CSupportErrorInfo::AddRef(void)
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{
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return m_pUnkOuter->AddRef();
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}
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STDMETHODIMP_(ULONG) CSupportErrorInfo::Release(void)
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{
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return m_pUnkOuter->Release();
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}
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/*===================================================================
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CSupportErrorInfo::InterfaceSupportsErrorInfo
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Informs a caller whether or not a specific interface
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supports exceptions through the Set/GetErrorInfo mechanism.
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Parameters:
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riid REFIID of the interface in question.
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Return Value:
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HRESULT S_OK if a call to GetErrorInfo will succeed
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for callers of riid. S_FALSE if not.
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===================================================================*/
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STDMETHODIMP CSupportErrorInfo::InterfaceSupportsErrorInfo
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(
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REFIID riid
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)
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{
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if (IID_IDispatch == riid || *m_pGuidDispInterface == riid)
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return S_OK;
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return ResultFromScode(S_FALSE);
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}
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/*===================================================================
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Exception
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Raises an exception using the CreateErrorInfo API and the
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ICreateErrorInfo interface.
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Note that this method doesn't allow for deferred filling
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of an EXCEPINFO structure.
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Parameters:
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strSource LPOLESTR the exception source
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strDescr LPOLESTR the exception description
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Returns:
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Nothing
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===================================================================*/
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void Exception
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(
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REFIID ObjID,
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LPOLESTR strSource,
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LPOLESTR strDescr
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)
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{
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HRESULT hr;
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ICreateErrorInfo *pICreateErr;
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IErrorInfo *pIErr;
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LANGID langID = LANG_NEUTRAL;
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#ifdef USE_LOCALE
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LANGID *pLangID;
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pLangID = (LANGID *)TlsGetValue(g_dwTLS);
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if (NULL != pLangID)
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langID = *pLangID;
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#endif
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/*
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* Thread-safe exception handling means that we call
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* CreateErrorInfo which gives us an ICreateErrorInfo pointer
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* that we then use to set the error information (basically
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* to set the fields of an EXCEPINFO structure. We then
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* call SetErrorInfo to attach this error to the current
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* thread. ITypeInfo::Invoke will look for this when it
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* returns from whatever function was invokes by calling
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* GetErrorInfo.
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*/
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//Not much we can do if this fails.
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if (FAILED(CreateErrorInfo(&pICreateErr)))
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return;
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/*
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* CONSIDER: Help file and help context?
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*/
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pICreateErr->SetGUID(ObjID);
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pICreateErr->SetHelpFile(L"");
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pICreateErr->SetHelpContext(0L);
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pICreateErr->SetSource(strSource);
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pICreateErr->SetDescription(strDescr);
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hr = pICreateErr->QueryInterface(IID_IErrorInfo, (PPVOID)&pIErr);
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if (SUCCEEDED(hr))
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{
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SetErrorInfo(0L, pIErr);
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pIErr->Release();
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}
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//SetErrorInfo holds the object's IErrorInfo
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pICreateErr->Release();
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return;
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}
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/*===================================================================
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ExceptionId
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Raises an exception using the CreateErrorInfo API and the
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ICreateErrorInfo interface.
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|
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Note that this method doesn't allow for deferred filling
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of an EXCEPINFO structure.
|
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|
|
Parameters:
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SourceID Resource ID for the source string
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DescrID Resource ID for the description string
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Returns:
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Nothing
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===================================================================*/
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void ExceptionId
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(
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REFIID ObjID,
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UINT SourceID,
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UINT DescrID,
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HRESULT hrCode
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)
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|
{
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HRESULT hr;
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ICreateErrorInfo *pICreateErr;
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IErrorInfo *pIErr;
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LANGID langID = LANG_NEUTRAL;
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|
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#ifdef USE_LOCALE
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LANGID *pLangID;
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pLangID = (LANGID *)TlsGetValue(g_dwTLS);
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|
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if (NULL != pLangID)
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langID = *pLangID;
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#endif
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|
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/*
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* Thread-safe exception handling means that we call
|
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* CreateErrorInfo which gives us an ICreateErrorInfo pointer
|
|
* that we then use to set the error information (basically
|
|
* to set the fields of an EXCEPINFO structure. We then
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* call SetErrorInfo to attach this error to the current
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* thread. ITypeInfo::Invoke will look for this when it
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* returns from whatever function was invokes by calling
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* GetErrorInfo.
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*/
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//Not much we can do if this fails.
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if (FAILED(CreateErrorInfo(&pICreateErr)))
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return;
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/*
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* CONSIDER: Help file and help context?
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*/
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DWORD cch;
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WCHAR strSource[MAX_RESSTRINGSIZE];
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WCHAR strDescr[MAX_RESSTRINGSIZE];
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WCHAR strHRESULTDescr[256];
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WCHAR strDescrWithHRESULT[MAX_RESSTRINGSIZE];
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pICreateErr->SetGUID(ObjID);
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pICreateErr->SetHelpFile(L"");
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pICreateErr->SetHelpContext(0L);
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cch = CwchLoadStringOfId(SourceID, strSource, MAX_RESSTRINGSIZE);
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if (cch > 0)
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pICreateErr->SetSource(strSource);
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cch = CwchLoadStringOfId(DescrID, strDescr, MAX_RESSTRINGSIZE);
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if (cch > 0)
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{
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//Bug Fix 91847 use a FormatMessage() based description
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HResultToWsz(hrCode, strHRESULTDescr, 256);
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_snwprintf(strDescrWithHRESULT, MAX_RESSTRINGSIZE, strDescr, strHRESULTDescr);
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strDescrWithHRESULT[MAX_RESSTRINGSIZE - 1] = L'\0';
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pICreateErr->SetDescription(strDescrWithHRESULT);
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}
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|
|
hr = pICreateErr->QueryInterface(IID_IErrorInfo, (PPVOID)&pIErr);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
SetErrorInfo(0L, pIErr);
|
|
pIErr->Release();
|
|
}
|
|
|
|
//SetErrorInfo holds the object's IErrorInfo
|
|
pICreateErr->Release();
|
|
return;
|
|
}
|