source: trunk/src/ole32/errorinfo.c@ 5120

Last change on this file since 5120 was 4659, checked in by sandervl, 25 years ago

Added Wine errorinfo api
File size: 12.5 KB
Line 
1/*
2 * ErrorInfo API
3 *
4 * Copyright 2000 Patrik Stridvall, Juergen Schmied
5 *
6 *
7 * The errorinfo is a per-thread object. The reference is stored in the
8 * TEB at offset 0xf80
9 */
10
11#include "debugtools.h"
12#include "windef.h"
13#include "heap.h"
14#include "winerror.h"
15#include "thread.h"
16#include "debugtools.h"
17#include "wine/obj_base.h"
18#include "wine/obj_oleaut.h"
19#include "wine/obj_errorinfo.h"
20#include "wine/unicode.h"
21
22DEFAULT_DEBUG_CHANNEL(ole);
23
24/* this code is from SysAllocStringLen (ole2disp.c in oleaut32) */
25static BSTR WINAPI ERRORINFO_SysAllocString(const OLECHAR* in)
26{
27 DWORD bufferSize;
28 DWORD* newBuffer;
29 WCHAR* stringBuffer;
30 DWORD len;
31
32 if (in == NULL)
33 return NULL;
34 /*
35 * Find the lenth of the buffer passed-in in bytes.
36 */
37 len = strlenW(in);
38 bufferSize = len * sizeof (WCHAR);
39
40 /*
41 * Allocate a new buffer to hold the string.
42 * dont't forget to keep an empty spot at the begining of the
43 * buffer for the character count and an extra character at the
44 * end for the NULL.
45 */
46 newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
47 0,
48 bufferSize + sizeof(WCHAR) + sizeof(DWORD));
49
50 /*
51 * If the memory allocation failed, return a null pointer.
52 */
53 if (newBuffer==0)
54 return 0;
55
56 /*
57 * Copy the length of the string in the placeholder.
58 */
59 *newBuffer = bufferSize;
60
61 /*
62 * Skip the byte count.
63 */
64 newBuffer++;
65
66 /*
67 * Copy the information in the buffer.
68 * Since it is valid to pass a NULL pointer here, we'll initialize the
69 * buffer to nul if it is the case.
70 */
71 if (in != 0)
72 memcpy(newBuffer, in, bufferSize);
73 else
74 memset(newBuffer, 0, bufferSize);
75
76 /*
77 * Make sure that there is a nul character at the end of the
78 * string.
79 */
80 stringBuffer = (WCHAR*)newBuffer;
81 stringBuffer[len] = 0;
82
83 return (LPWSTR)stringBuffer;
84}
85
86/* this code is from SysFreeString (ole2disp.c in oleaut32)*/
87static VOID WINAPI ERRORINFO_SysFreeString(BSTR in)
88{
89 DWORD* bufferPointer;
90
91 /* NULL is a valid parameter */
92 if(!in) return;
93
94 /*
95 * We have to be careful when we free a BSTR pointer, it points to
96 * the beginning of the string but it skips the byte count contained
97 * before the string.
98 */
99 bufferPointer = (DWORD*)in;
100
101 bufferPointer--;
102
103 /*
104 * Free the memory from it's "real" origin.
105 */
106 HeapFree(GetProcessHeap(), 0, bufferPointer);
107}
108
109
110typedef struct ErrorInfoImpl
111{
112 ICOM_VTABLE(IErrorInfo) *lpvtei;
113 ICOM_VTABLE(ICreateErrorInfo) *lpvtcei;
114 ICOM_VTABLE(ISupportErrorInfo) *lpvtsei;
115 DWORD ref;
116
117 GUID m_Guid;
118 BSTR bstrSource;
119 BSTR bstrDescription;
120 BSTR bstrHelpFile;
121 DWORD m_dwHelpContext;
122} ErrorInfoImpl;
123
124static ICOM_VTABLE(IErrorInfo) IErrorInfoImpl_VTable;
125static ICOM_VTABLE(ICreateErrorInfo) ICreateErrorInfoImpl_VTable;
126static ICOM_VTABLE(ISupportErrorInfo) ISupportErrorInfoImpl_VTable;
127
128/*
129 converts a objectpointer to This
130 */
131#define _IErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtei)))
132#define _ICOM_THIS_From_IErrorInfo(class, name) class* This = (class*)(((char*)name)-_IErrorInfo_Offset);
133
134#define _ICreateErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtcei)))
135#define _ICOM_THIS_From_ICreateErrorInfo(class, name) class* This = (class*)(((char*)name)-_ICreateErrorInfo_Offset);
136
137#define _ISupportErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtsei)))
138#define _ICOM_THIS_From_ISupportErrorInfo(class, name) class* This = (class*)(((char*)name)-_ISupportErrorInfo_Offset);
139
140/*
141 converts This to a objectpointer
142 */
143#define _IErrorInfo_(This) (IErrorInfo*)&(This->lpvtei)
144#define _ICreateErrorInfo_(This) (ICreateErrorInfo*)&(This->lpvtcei)
145#define _ISupportErrorInfo_(This) (ISupportErrorInfo*)&(This->lpvtsei)
146
147IErrorInfo * IErrorInfoImpl_Constructor()
148{
149 ErrorInfoImpl * ei = HeapAlloc(GetProcessHeap(), 0, sizeof(ErrorInfoImpl));
150 if (ei)
151 {
152 ei->lpvtei = &IErrorInfoImpl_VTable;
153 ei->lpvtcei = &ICreateErrorInfoImpl_VTable;
154 ei->lpvtsei = &ISupportErrorInfoImpl_VTable;
155 ei->ref = 1;
156 ei->bstrSource = NULL;
157 ei->bstrDescription = NULL;
158 ei->bstrHelpFile = NULL;
159 ei->m_dwHelpContext = 0;
160 }
161 return (IErrorInfo *)ei;
162}
163
164
165static HRESULT WINAPI IErrorInfoImpl_QueryInterface(
166 IErrorInfo* iface,
167 REFIID riid,
168 VOID** ppvoid)
169{
170 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
171//// TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,debugstr_guid(riid),ppvoid);
172
173 *ppvoid = NULL;
174
175 if(IsEqualIID(riid, &IID_IErrorInfo))
176 {
177 *ppvoid = _IErrorInfo_(This);
178 }
179 else if(IsEqualIID(riid, &IID_ICreateErrorInfo))
180 {
181 *ppvoid = _ICreateErrorInfo_(This);
182 }
183 else if(IsEqualIID(riid, &IID_ISupportErrorInfo))
184 {
185 *ppvoid = _ISupportErrorInfo_(This);
186 }
187
188 if(*ppvoid)
189 {
190 IUnknown_AddRef( (IUnknown*)*ppvoid );
191 TRACE("-- Interface: (%p)->(%p)\n",ppvoid,*ppvoid);
192 return S_OK;
193 }
194 TRACE("-- Interface: E_NOINTERFACE\n");
195 return E_NOINTERFACE;
196}
197
198static ULONG WINAPI IErrorInfoImpl_AddRef(
199 IErrorInfo* iface)
200{
201 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
202 TRACE("(%p)->(count=%lu)\n",This,This->ref);
203 return InterlockedIncrement(&This->ref);
204}
205
206static ULONG WINAPI IErrorInfoImpl_Release(
207 IErrorInfo* iface)
208{
209 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
210 TRACE("(%p)->(count=%lu)\n",This,This->ref);
211
212 if (!InterlockedDecrement(&This->ref))
213 {
214 TRACE("-- destroying IErrorInfo(%p)\n",This);
215 HeapFree(GetProcessHeap(),0,This);
216 return 0;
217 }
218 return This->ref;
219}
220
221static HRESULT WINAPI IErrorInfoImpl_GetGUID(
222 IErrorInfo* iface,
223 GUID * pGUID)
224{
225 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
226 TRACE("(%p)->(count=%lu)\n",This,This->ref);
227 if(!pGUID )return E_INVALIDARG;
228 memcpy(pGUID, &This->m_Guid, sizeof(GUID));
229 return S_OK;
230}
231
232static HRESULT WINAPI IErrorInfoImpl_GetSource(
233 IErrorInfo* iface,
234 BSTR *pBstrSource)
235{
236 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
237 TRACE("(%p)->(pBstrSource=%p)\n",This,pBstrSource);
238 if (pBstrSource == NULL)
239 return E_INVALIDARG;
240 *pBstrSource = ERRORINFO_SysAllocString(This->bstrSource);
241 return S_OK;
242}
243
244static HRESULT WINAPI IErrorInfoImpl_GetDescription(
245 IErrorInfo* iface,
246 BSTR *pBstrDescription)
247{
248 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
249
250 TRACE("(%p)->(pBstrDescription=%p)\n",This,pBstrDescription);
251 if (pBstrDescription == NULL)
252 return E_INVALIDARG;
253 *pBstrDescription = ERRORINFO_SysAllocString(This->bstrDescription);
254
255 return S_OK;
256}
257
258static HRESULT WINAPI IErrorInfoImpl_GetHelpFile(
259 IErrorInfo* iface,
260 BSTR *pBstrHelpFile)
261{
262 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
263
264 TRACE("(%p)->(pBstrHelpFile=%p)\n",This, pBstrHelpFile);
265 if (pBstrHelpFile == NULL)
266 return E_INVALIDARG;
267 *pBstrHelpFile = ERRORINFO_SysAllocString(This->bstrHelpFile);
268
269 return S_OK;
270}
271
272static HRESULT WINAPI IErrorInfoImpl_GetHelpContext(
273 IErrorInfo* iface,
274 DWORD *pdwHelpContext)
275{
276 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
277 TRACE("(%p)->(pdwHelpContext=%p)\n",This, pdwHelpContext);
278 if (pdwHelpContext == NULL)
279 return E_INVALIDARG;
280 *pdwHelpContext = This->m_dwHelpContext;
281
282 return S_OK;
283}
284
285static ICOM_VTABLE(IErrorInfo) IErrorInfoImpl_VTable =
286{
287 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
288 IErrorInfoImpl_QueryInterface,
289 IErrorInfoImpl_AddRef,
290 IErrorInfoImpl_Release,
291
292 IErrorInfoImpl_GetGUID,
293 IErrorInfoImpl_GetSource,
294 IErrorInfoImpl_GetDescription,
295 IErrorInfoImpl_GetHelpFile,
296 IErrorInfoImpl_GetHelpContext
297};
298
299
300static HRESULT WINAPI ICreateErrorInfoImpl_QueryInterface(
301 ICreateErrorInfo* iface,
302 REFIID riid,
303 VOID** ppvoid)
304{
305 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
306 TRACE("(%p)\n", This);
307 return IErrorInfo_QueryInterface(_IErrorInfo_(This), riid, ppvoid);
308}
309
310static ULONG WINAPI ICreateErrorInfoImpl_AddRef(
311 ICreateErrorInfo* iface)
312{
313 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
314 TRACE("(%p)\n", This);
315 return IErrorInfo_AddRef(_IErrorInfo_(This));
316}
317
318static ULONG WINAPI ICreateErrorInfoImpl_Release(
319 ICreateErrorInfo* iface)
320{
321 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
322 TRACE("(%p)\n", This);
323 return IErrorInfo_Release(_IErrorInfo_(This));
324}
325
326
327static HRESULT WINAPI ICreateErrorInfoImpl_SetGUID(
328 ICreateErrorInfo* iface,
329 REFGUID rguid)
330{
331 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
332//// TRACE("(%p)->(%s)\n", This, debugstr_guid(rguid));
333 memcpy(&This->m_Guid, rguid, sizeof(GUID));
334 return S_OK;
335}
336
337static HRESULT WINAPI ICreateErrorInfoImpl_SetSource(
338 ICreateErrorInfo* iface,
339 LPOLESTR szSource)
340{
341 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
342 TRACE("(%p)\n",This);
343 if (This->bstrSource != NULL)
344 ERRORINFO_SysFreeString(This->bstrSource);
345 This->bstrSource = ERRORINFO_SysAllocString(szSource);
346
347 return S_OK;
348}
349
350static HRESULT WINAPI ICreateErrorInfoImpl_SetDescription(
351 ICreateErrorInfo* iface,
352 LPOLESTR szDescription)
353{
354 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
355 TRACE("(%p)\n",This);
356 if (This->bstrDescription != NULL)
357 ERRORINFO_SysFreeString(This->bstrDescription);
358 This->bstrDescription = ERRORINFO_SysAllocString(szDescription);
359
360 return S_OK;
361}
362
363static HRESULT WINAPI ICreateErrorInfoImpl_SetHelpFile(
364 ICreateErrorInfo* iface,
365 LPOLESTR szHelpFile)
366{
367 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
368 TRACE("(%p)\n",This);
369 if (This->bstrHelpFile != NULL)
370 ERRORINFO_SysFreeString(This->bstrHelpFile);
371 This->bstrHelpFile = ERRORINFO_SysAllocString(szHelpFile);
372
373 return S_OK;
374}
375
376static HRESULT WINAPI ICreateErrorInfoImpl_SetHelpContext(
377 ICreateErrorInfo* iface,
378 DWORD dwHelpContext)
379{
380 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
381 TRACE("(%p)\n",This);
382 This->m_dwHelpContext = dwHelpContext;
383
384 return S_OK;
385}
386
387static ICOM_VTABLE(ICreateErrorInfo) ICreateErrorInfoImpl_VTable =
388{
389 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
390 ICreateErrorInfoImpl_QueryInterface,
391 ICreateErrorInfoImpl_AddRef,
392 ICreateErrorInfoImpl_Release,
393
394 ICreateErrorInfoImpl_SetGUID,
395 ICreateErrorInfoImpl_SetSource,
396 ICreateErrorInfoImpl_SetDescription,
397 ICreateErrorInfoImpl_SetHelpFile,
398 ICreateErrorInfoImpl_SetHelpContext
399};
400
401static HRESULT WINAPI ISupportErrorInfoImpl_QueryInterface(
402 ISupportErrorInfo* iface,
403 REFIID riid,
404 VOID** ppvoid)
405{
406 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
407 TRACE("(%p)\n", This);
408
409 return IErrorInfo_QueryInterface(_IErrorInfo_(This), riid, ppvoid);
410}
411
412static ULONG WINAPI ISupportErrorInfoImpl_AddRef(
413 ISupportErrorInfo* iface)
414{
415 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
416 TRACE("(%p)\n", This);
417 return IErrorInfo_AddRef(_IErrorInfo_(This));
418}
419
420static ULONG WINAPI ISupportErrorInfoImpl_Release(
421 ISupportErrorInfo* iface)
422{
423 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
424 TRACE("(%p)\n", This);
425 return IErrorInfo_Release(_IErrorInfo_(This));
426}
427
428
429static HRESULT WINAPI ISupportErrorInfoImpl_InterfaceSupportsErrorInfo(
430 ISupportErrorInfo* iface,
431 REFIID riid)
432{
433 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
434//// TRACE("(%p)->(%s)\n", This, debugstr_guid(riid));
435 return (IsEqualIID(riid, &This->m_Guid)) ? S_OK : S_FALSE;
436}
437
438static ICOM_VTABLE(ISupportErrorInfo) ISupportErrorInfoImpl_VTable =
439{
440 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
441 ISupportErrorInfoImpl_QueryInterface,
442 ISupportErrorInfoImpl_AddRef,
443 ISupportErrorInfoImpl_Release,
444
445
446 ISupportErrorInfoImpl_InterfaceSupportsErrorInfo
447};
448/***********************************************************************
449 * CreateErrorInfo
450 */
451HRESULT WINAPI CreateErrorInfo(ICreateErrorInfo **pperrinfo)
452{
453 IErrorInfo * pei;
454 HRESULT res;
455 TRACE("(%p): stub:\n", pperrinfo);
456 if(! pperrinfo ) return E_INVALIDARG;
457 if(!(pei=IErrorInfoImpl_Constructor()))return E_OUTOFMEMORY;
458
459 res = IErrorInfo_QueryInterface(pei, &IID_ICreateErrorInfo, (LPVOID*)pperrinfo);
460 IErrorInfo_Release(pei);
461 return res;
462}
463
464/***********************************************************************
465 * GetErrorInfo
466 */
467HRESULT WINAPI GetErrorInfo(ULONG dwReserved, IErrorInfo **pperrinfo)
468{
469 TRACE("(%ld, %p, %p): stub:\n", dwReserved, pperrinfo, NtCurrentTeb()->ErrorInfo);
470
471 if(! pperrinfo ) return E_INVALIDARG;
472 if(!(*pperrinfo = (IErrorInfo*)(NtCurrentTeb()->ErrorInfo))) return S_FALSE;
473
474 /* clear thread error state */
475 NtCurrentTeb()->ErrorInfo = NULL;
476 return S_OK;
477}
478
479/***********************************************************************
480 * SetErrorInfo
481 */
482HRESULT WINAPI SetErrorInfo(ULONG dwReserved, IErrorInfo *perrinfo)
483{
484 IErrorInfo * pei;
485 TRACE("(%ld, %p): stub:\n", dwReserved, perrinfo);
486
487 /* release old errorinfo */
488 pei = (IErrorInfo*)NtCurrentTeb()->ErrorInfo;
489 if(pei) IErrorInfo_Release(pei);
490
491 /* set to new value */
492 NtCurrentTeb()->ErrorInfo = perrinfo;
493 if(perrinfo) IErrorInfo_AddRef(perrinfo);
494 return S_OK;
495}
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