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Sweden-Number/dlls/ole32/errorinfo.c

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/*
* ErrorInfo API
*
* Copyright 2000 Patrik Stridvall, Juergen Schmied
*
*
* The errorinfo is a per-thread object. The reference is stored in the
* TEB at offset 0xf80
*/
#include <string.h>
#include "debugtools.h"
#include "windef.h"
#include "heap.h"
#include "winerror.h"
#include "thread.h"
#include "debugtools.h"
#include "wine/obj_base.h"
#include "wine/obj_oleaut.h"
#include "wine/obj_errorinfo.h"
#include "wine/unicode.h"
DEFAULT_DEBUG_CHANNEL(ole);
/* this code is from SysAllocStringLen (ole2disp.c in oleaut32) */
static BSTR WINAPI ERRORINFO_SysAllocString(const OLECHAR* in)
{
DWORD bufferSize;
DWORD* newBuffer;
WCHAR* stringBuffer;
DWORD len;
if (in == NULL)
return NULL;
/*
* Find the lenth of the buffer passed-in in bytes.
*/
len = strlenW(in);
bufferSize = len * sizeof (WCHAR);
/*
* Allocate a new buffer to hold the string.
* dont't forget to keep an empty spot at the begining of the
* buffer for the character count and an extra character at the
* end for the NULL.
*/
newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
0,
bufferSize + sizeof(WCHAR) + sizeof(DWORD));
/*
* If the memory allocation failed, return a null pointer.
*/
if (newBuffer==0)
return 0;
/*
* Copy the length of the string in the placeholder.
*/
*newBuffer = bufferSize;
/*
* Skip the byte count.
*/
newBuffer++;
/*
* Copy the information in the buffer.
* Since it is valid to pass a NULL pointer here, we'll initialize the
* buffer to nul if it is the case.
*/
if (in != 0)
memcpy(newBuffer, in, bufferSize);
else
memset(newBuffer, 0, bufferSize);
/*
* Make sure that there is a nul character at the end of the
* string.
*/
stringBuffer = (WCHAR*)newBuffer;
stringBuffer[len] = 0;
return (LPWSTR)stringBuffer;
}
/* this code is from SysFreeString (ole2disp.c in oleaut32)*/
static VOID WINAPI ERRORINFO_SysFreeString(BSTR in)
{
DWORD* bufferPointer;
/* NULL is a valid parameter */
if(!in) return;
/*
* We have to be careful when we free a BSTR pointer, it points to
* the beginning of the string but it skips the byte count contained
* before the string.
*/
bufferPointer = (DWORD*)in;
bufferPointer--;
/*
* Free the memory from it's "real" origin.
*/
HeapFree(GetProcessHeap(), 0, bufferPointer);
}
typedef struct ErrorInfoImpl
{
ICOM_VTABLE(IErrorInfo) *lpvtei;
ICOM_VTABLE(ICreateErrorInfo) *lpvtcei;
ICOM_VTABLE(ISupportErrorInfo) *lpvtsei;
DWORD ref;
GUID m_Guid;
BSTR bstrSource;
BSTR bstrDescription;
BSTR bstrHelpFile;
DWORD m_dwHelpContext;
} ErrorInfoImpl;
static ICOM_VTABLE(IErrorInfo) IErrorInfoImpl_VTable;
static ICOM_VTABLE(ICreateErrorInfo) ICreateErrorInfoImpl_VTable;
static ICOM_VTABLE(ISupportErrorInfo) ISupportErrorInfoImpl_VTable;
/*
converts a objectpointer to This
*/
#define _IErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtei)))
#define _ICOM_THIS_From_IErrorInfo(class, name) class* This = (class*)(((char*)name)-_IErrorInfo_Offset);
#define _ICreateErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtcei)))
#define _ICOM_THIS_From_ICreateErrorInfo(class, name) class* This = (class*)(((char*)name)-_ICreateErrorInfo_Offset);
#define _ISupportErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtsei)))
#define _ICOM_THIS_From_ISupportErrorInfo(class, name) class* This = (class*)(((char*)name)-_ISupportErrorInfo_Offset);
/*
converts This to a objectpointer
*/
#define _IErrorInfo_(This) (IErrorInfo*)&(This->lpvtei)
#define _ICreateErrorInfo_(This) (ICreateErrorInfo*)&(This->lpvtcei)
#define _ISupportErrorInfo_(This) (ISupportErrorInfo*)&(This->lpvtsei)
IErrorInfo * IErrorInfoImpl_Constructor()
{
ErrorInfoImpl * ei = HeapAlloc(GetProcessHeap(), 0, sizeof(ErrorInfoImpl));
if (ei)
{
ei->lpvtei = &IErrorInfoImpl_VTable;
ei->lpvtcei = &ICreateErrorInfoImpl_VTable;
ei->lpvtsei = &ISupportErrorInfoImpl_VTable;
ei->ref = 1;
ei->bstrSource = NULL;
ei->bstrDescription = NULL;
ei->bstrHelpFile = NULL;
ei->m_dwHelpContext = 0;
}
return (IErrorInfo *)ei;
}
static HRESULT WINAPI IErrorInfoImpl_QueryInterface(
IErrorInfo* iface,
REFIID riid,
VOID** ppvoid)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,debugstr_guid(riid),ppvoid);
*ppvoid = NULL;
if(IsEqualIID(riid, &IID_IErrorInfo))
{
*ppvoid = _IErrorInfo_(This);
}
else if(IsEqualIID(riid, &IID_ICreateErrorInfo))
{
*ppvoid = _ICreateErrorInfo_(This);
}
else if(IsEqualIID(riid, &IID_ISupportErrorInfo))
{
*ppvoid = _ISupportErrorInfo_(This);
}
if(*ppvoid)
{
IUnknown_AddRef( (IUnknown*)*ppvoid );
TRACE("-- Interface: (%p)->(%p)\n",ppvoid,*ppvoid);
return S_OK;
}
TRACE("-- Interface: E_NOINTERFACE\n");
return E_NOINTERFACE;
}
static ULONG WINAPI IErrorInfoImpl_AddRef(
IErrorInfo* iface)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(count=%lu)\n",This,This->ref);
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI IErrorInfoImpl_Release(
IErrorInfo* iface)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(count=%lu)\n",This,This->ref);
if (!InterlockedDecrement(&This->ref))
{
TRACE("-- destroying IErrorInfo(%p)\n",This);
HeapFree(GetProcessHeap(),0,This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI IErrorInfoImpl_GetGUID(
IErrorInfo* iface,
GUID * pGUID)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(count=%lu)\n",This,This->ref);
if(!pGUID )return E_INVALIDARG;
memcpy(pGUID, &This->m_Guid, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI IErrorInfoImpl_GetSource(
IErrorInfo* iface,
BSTR *pBstrSource)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(pBstrSource=%p)\n",This,pBstrSource);
if (pBstrSource == NULL)
return E_INVALIDARG;
*pBstrSource = ERRORINFO_SysAllocString(This->bstrSource);
return S_OK;
}
static HRESULT WINAPI IErrorInfoImpl_GetDescription(
IErrorInfo* iface,
BSTR *pBstrDescription)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(pBstrDescription=%p)\n",This,pBstrDescription);
if (pBstrDescription == NULL)
return E_INVALIDARG;
*pBstrDescription = ERRORINFO_SysAllocString(This->bstrDescription);
return S_OK;
}
static HRESULT WINAPI IErrorInfoImpl_GetHelpFile(
IErrorInfo* iface,
BSTR *pBstrHelpFile)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(pBstrHelpFile=%p)\n",This, pBstrHelpFile);
if (pBstrHelpFile == NULL)
return E_INVALIDARG;
*pBstrHelpFile = ERRORINFO_SysAllocString(This->bstrHelpFile);
return S_OK;
}
static HRESULT WINAPI IErrorInfoImpl_GetHelpContext(
IErrorInfo* iface,
DWORD *pdwHelpContext)
{
_ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(pdwHelpContext=%p)\n",This, pdwHelpContext);
if (pdwHelpContext == NULL)
return E_INVALIDARG;
*pdwHelpContext = This->m_dwHelpContext;
return S_OK;
}
static ICOM_VTABLE(IErrorInfo) IErrorInfoImpl_VTable =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
IErrorInfoImpl_QueryInterface,
IErrorInfoImpl_AddRef,
IErrorInfoImpl_Release,
IErrorInfoImpl_GetGUID,
IErrorInfoImpl_GetSource,
IErrorInfoImpl_GetDescription,
IErrorInfoImpl_GetHelpFile,
IErrorInfoImpl_GetHelpContext
};
static HRESULT WINAPI ICreateErrorInfoImpl_QueryInterface(
ICreateErrorInfo* iface,
REFIID riid,
VOID** ppvoid)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n", This);
return IErrorInfo_QueryInterface(_IErrorInfo_(This), riid, ppvoid);
}
static ULONG WINAPI ICreateErrorInfoImpl_AddRef(
ICreateErrorInfo* iface)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n", This);
return IErrorInfo_AddRef(_IErrorInfo_(This));
}
static ULONG WINAPI ICreateErrorInfoImpl_Release(
ICreateErrorInfo* iface)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n", This);
return IErrorInfo_Release(_IErrorInfo_(This));
}
static HRESULT WINAPI ICreateErrorInfoImpl_SetGUID(
ICreateErrorInfo* iface,
REFGUID rguid)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(%s)\n", This, debugstr_guid(rguid));
memcpy(&This->m_Guid, rguid, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI ICreateErrorInfoImpl_SetSource(
ICreateErrorInfo* iface,
LPOLESTR szSource)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n",This);
if (This->bstrSource != NULL)
ERRORINFO_SysFreeString(This->bstrSource);
This->bstrSource = ERRORINFO_SysAllocString(szSource);
return S_OK;
}
static HRESULT WINAPI ICreateErrorInfoImpl_SetDescription(
ICreateErrorInfo* iface,
LPOLESTR szDescription)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n",This);
if (This->bstrDescription != NULL)
ERRORINFO_SysFreeString(This->bstrDescription);
This->bstrDescription = ERRORINFO_SysAllocString(szDescription);
return S_OK;
}
static HRESULT WINAPI ICreateErrorInfoImpl_SetHelpFile(
ICreateErrorInfo* iface,
LPOLESTR szHelpFile)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n",This);
if (This->bstrHelpFile != NULL)
ERRORINFO_SysFreeString(This->bstrHelpFile);
This->bstrHelpFile = ERRORINFO_SysAllocString(szHelpFile);
return S_OK;
}
static HRESULT WINAPI ICreateErrorInfoImpl_SetHelpContext(
ICreateErrorInfo* iface,
DWORD dwHelpContext)
{
_ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n",This);
This->m_dwHelpContext = dwHelpContext;
return S_OK;
}
static ICOM_VTABLE(ICreateErrorInfo) ICreateErrorInfoImpl_VTable =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
ICreateErrorInfoImpl_QueryInterface,
ICreateErrorInfoImpl_AddRef,
ICreateErrorInfoImpl_Release,
ICreateErrorInfoImpl_SetGUID,
ICreateErrorInfoImpl_SetSource,
ICreateErrorInfoImpl_SetDescription,
ICreateErrorInfoImpl_SetHelpFile,
ICreateErrorInfoImpl_SetHelpContext
};
static HRESULT WINAPI ISupportErrorInfoImpl_QueryInterface(
ISupportErrorInfo* iface,
REFIID riid,
VOID** ppvoid)
{
_ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n", This);
return IErrorInfo_QueryInterface(_IErrorInfo_(This), riid, ppvoid);
}
static ULONG WINAPI ISupportErrorInfoImpl_AddRef(
ISupportErrorInfo* iface)
{
_ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n", This);
return IErrorInfo_AddRef(_IErrorInfo_(This));
}
static ULONG WINAPI ISupportErrorInfoImpl_Release(
ISupportErrorInfo* iface)
{
_ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)\n", This);
return IErrorInfo_Release(_IErrorInfo_(This));
}
static HRESULT WINAPI ISupportErrorInfoImpl_InterfaceSupportsErrorInfo(
ISupportErrorInfo* iface,
REFIID riid)
{
_ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
TRACE("(%p)->(%s)\n", This, debugstr_guid(riid));
return (IsEqualIID(riid, &This->m_Guid)) ? S_OK : S_FALSE;
}
static ICOM_VTABLE(ISupportErrorInfo) ISupportErrorInfoImpl_VTable =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
ISupportErrorInfoImpl_QueryInterface,
ISupportErrorInfoImpl_AddRef,
ISupportErrorInfoImpl_Release,
ISupportErrorInfoImpl_InterfaceSupportsErrorInfo
};
/***********************************************************************
* CreateErrorInfo
*/
HRESULT WINAPI CreateErrorInfo(ICreateErrorInfo **pperrinfo)
{
IErrorInfo * pei;
HRESULT res;
TRACE("(%p): stub:\n", pperrinfo);
if(! pperrinfo ) return E_INVALIDARG;
if(!(pei=IErrorInfoImpl_Constructor()))return E_OUTOFMEMORY;
res = IErrorInfo_QueryInterface(pei, &IID_ICreateErrorInfo, (LPVOID*)pperrinfo);
IErrorInfo_Release(pei);
return res;
}
/***********************************************************************
* GetErrorInfo
*/
HRESULT WINAPI GetErrorInfo(ULONG dwReserved, IErrorInfo **pperrinfo)
{
TRACE("(%ld, %p, %p): stub:\n", dwReserved, pperrinfo, NtCurrentTeb()->ErrorInfo);
if(! pperrinfo ) return E_INVALIDARG;
if(!(*pperrinfo = (IErrorInfo*)(NtCurrentTeb()->ErrorInfo))) return S_FALSE;
/* clear thread error state */
NtCurrentTeb()->ErrorInfo = NULL;
return S_OK;
}
/***********************************************************************
* SetErrorInfo
*/
HRESULT WINAPI SetErrorInfo(ULONG dwReserved, IErrorInfo *perrinfo)
{
IErrorInfo * pei;
TRACE("(%ld, %p): stub:\n", dwReserved, perrinfo);
/* release old errorinfo */
pei = (IErrorInfo*)NtCurrentTeb()->ErrorInfo;
if(pei) IErrorInfo_Release(pei);
/* set to new value */
NtCurrentTeb()->ErrorInfo = perrinfo;
if(perrinfo) IErrorInfo_AddRef(perrinfo);
return S_OK;
}
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