source: trunk/src/ole32/errorinfo.c@ 6652

Last change on this file since 6652 was 6648, checked in by bird, 24 years ago

Added $Id:$ keyword.
File size: 13.2 KB
Line 
1/* $Id: errorinfo.c,v 1.3 2001-09-05 13:17:09 bird Exp $ */
2/*
3 * ErrorInfo API
4 *
5 * Copyright 2000 Patrik Stridvall, Juergen Schmied
6 *
7 *
8 * The errorinfo is a per-thread object. The reference is stored in the
9 * TEB at offset 0xf80
10 */
11
12#include <string.h>
13#include "debugtools.h"
14#include "windef.h"
15#include "heap.h"
16#include "winerror.h"
17#include "thread.h"
18#include "debugtools.h"
19#include "wine/obj_base.h"
20#include "wine/obj_oleaut.h"
21#include "wine/obj_errorinfo.h"
22#include "wine/unicode.h"
23
24DEFAULT_DEBUG_CHANNEL(ole);
25
26/* this code is from SysAllocStringLen (ole2disp.c in oleaut32) */
27static BSTR WINAPI ERRORINFO_SysAllocString(const OLECHAR* in)
28{
29 DWORD bufferSize;
30 DWORD* newBuffer;
31 WCHAR* stringBuffer;
32 DWORD len;
33
34 if (in == NULL)
35 return NULL;
36 /*
37 * Find the lenth of the buffer passed-in in bytes.
38 */
39 len = strlenW(in);
40 bufferSize = len * sizeof (WCHAR);
41
42 /*
43 * Allocate a new buffer to hold the string.
44 * dont't forget to keep an empty spot at the begining of the
45 * buffer for the character count and an extra character at the
46 * end for the NULL.
47 */
48 newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
49 0,
50 bufferSize + sizeof(WCHAR) + sizeof(DWORD));
51
52 /*
53 * If the memory allocation failed, return a null pointer.
54 */
55 if (newBuffer==0)
56 return 0;
57
58 /*
59 * Copy the length of the string in the placeholder.
60 */
61 *newBuffer = bufferSize;
62
63 /*
64 * Skip the byte count.
65 */
66 newBuffer++;
67
68 /*
69 * Copy the information in the buffer.
70 * Since it is valid to pass a NULL pointer here, we'll initialize the
71 * buffer to nul if it is the case.
72 */
73 if (in != 0)
74 memcpy(newBuffer, in, bufferSize);
75 else
76 memset(newBuffer, 0, bufferSize);
77
78 /*
79 * Make sure that there is a nul character at the end of the
80 * string.
81 */
82 stringBuffer = (WCHAR*)newBuffer;
83 stringBuffer[len] = 0;
84
85 return (LPWSTR)stringBuffer;
86}
87
88/* this code is from SysFreeString (ole2disp.c in oleaut32)*/
89static VOID WINAPI ERRORINFO_SysFreeString(BSTR in)
90{
91 DWORD* bufferPointer;
92
93 /* NULL is a valid parameter */
94 if(!in) return;
95
96 /*
97 * We have to be careful when we free a BSTR pointer, it points to
98 * the beginning of the string but it skips the byte count contained
99 * before the string.
100 */
101 bufferPointer = (DWORD*)in;
102
103 bufferPointer--;
104
105 /*
106 * Free the memory from it's "real" origin.
107 */
108 HeapFree(GetProcessHeap(), 0, bufferPointer);
109}
110
111
112typedef struct ErrorInfoImpl
113{
114 ICOM_VTABLE(IErrorInfo) *lpvtei;
115 ICOM_VTABLE(ICreateErrorInfo) *lpvtcei;
116 ICOM_VTABLE(ISupportErrorInfo) *lpvtsei;
117 DWORD ref;
118
119 GUID m_Guid;
120 BSTR bstrSource;
121 BSTR bstrDescription;
122 BSTR bstrHelpFile;
123 DWORD m_dwHelpContext;
124} ErrorInfoImpl;
125
126static ICOM_VTABLE(IErrorInfo) IErrorInfoImpl_VTable;
127static ICOM_VTABLE(ICreateErrorInfo) ICreateErrorInfoImpl_VTable;
128static ICOM_VTABLE(ISupportErrorInfo) ISupportErrorInfoImpl_VTable;
129
130/*
131 converts a objectpointer to This
132 */
133#define _IErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtei)))
134#define _ICOM_THIS_From_IErrorInfo(class, name) class* This = (class*)(((char*)name)-_IErrorInfo_Offset);
135
136#define _ICreateErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtcei)))
137#define _ICOM_THIS_From_ICreateErrorInfo(class, name) class* This = (class*)(((char*)name)-_ICreateErrorInfo_Offset);
138
139#define _ISupportErrorInfo_Offset ((int)(&(((ErrorInfoImpl*)0)->lpvtsei)))
140#define _ICOM_THIS_From_ISupportErrorInfo(class, name) class* This = (class*)(((char*)name)-_ISupportErrorInfo_Offset);
141
142/*
143 converts This to a objectpointer
144 */
145#define _IErrorInfo_(This) (IErrorInfo*)&(This->lpvtei)
146#define _ICreateErrorInfo_(This) (ICreateErrorInfo*)&(This->lpvtcei)
147#define _ISupportErrorInfo_(This) (ISupportErrorInfo*)&(This->lpvtsei)
148
149IErrorInfo * IErrorInfoImpl_Constructor()
150{
151 ErrorInfoImpl * ei = HeapAlloc(GetProcessHeap(), 0, sizeof(ErrorInfoImpl));
152 if (ei)
153 {
154 ei->lpvtei = &IErrorInfoImpl_VTable;
155 ei->lpvtcei = &ICreateErrorInfoImpl_VTable;
156 ei->lpvtsei = &ISupportErrorInfoImpl_VTable;
157 ei->ref = 1;
158 ei->bstrSource = NULL;
159 ei->bstrDescription = NULL;
160 ei->bstrHelpFile = NULL;
161 ei->m_dwHelpContext = 0;
162 }
163 return (IErrorInfo *)ei;
164}
165
166
167static HRESULT WINAPI IErrorInfoImpl_QueryInterface(
168 IErrorInfo* iface,
169 REFIID riid,
170 VOID** ppvoid)
171{
172 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
173 TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,debugstr_guid(riid),ppvoid);
174
175 *ppvoid = NULL;
176
177 if(IsEqualIID(riid, &IID_IErrorInfo))
178 {
179 *ppvoid = _IErrorInfo_(This);
180 }
181 else if(IsEqualIID(riid, &IID_ICreateErrorInfo))
182 {
183 *ppvoid = _ICreateErrorInfo_(This);
184 }
185 else if(IsEqualIID(riid, &IID_ISupportErrorInfo))
186 {
187 *ppvoid = _ISupportErrorInfo_(This);
188 }
189
190 if(*ppvoid)
191 {
192 IUnknown_AddRef( (IUnknown*)*ppvoid );
193 TRACE("-- Interface: (%p)->(%p)\n",ppvoid,*ppvoid);
194 return S_OK;
195 }
196 TRACE("-- Interface: E_NOINTERFACE\n");
197 return E_NOINTERFACE;
198}
199
200static ULONG WINAPI IErrorInfoImpl_AddRef(
201 IErrorInfo* iface)
202{
203 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
204 TRACE("(%p)->(count=%lu)\n",This,This->ref);
205 return InterlockedIncrement(&This->ref);
206}
207
208static ULONG WINAPI IErrorInfoImpl_Release(
209 IErrorInfo* iface)
210{
211 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
212 TRACE("(%p)->(count=%lu)\n",This,This->ref);
213
214 if (!InterlockedDecrement(&This->ref))
215 {
216 TRACE("-- destroying IErrorInfo(%p)\n",This);
217 HeapFree(GetProcessHeap(),0,This);
218 return 0;
219 }
220 return This->ref;
221}
222
223static HRESULT WINAPI IErrorInfoImpl_GetGUID(
224 IErrorInfo* iface,
225 GUID * pGUID)
226{
227 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
228 TRACE("(%p)->(count=%lu)\n",This,This->ref);
229 if(!pGUID )return E_INVALIDARG;
230 memcpy(pGUID, &This->m_Guid, sizeof(GUID));
231 return S_OK;
232}
233
234static HRESULT WINAPI IErrorInfoImpl_GetSource(
235 IErrorInfo* iface,
236 BSTR *pBstrSource)
237{
238 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
239 TRACE("(%p)->(pBstrSource=%p)\n",This,pBstrSource);
240 if (pBstrSource == NULL)
241 return E_INVALIDARG;
242 *pBstrSource = ERRORINFO_SysAllocString(This->bstrSource);
243 return S_OK;
244}
245
246static HRESULT WINAPI IErrorInfoImpl_GetDescription(
247 IErrorInfo* iface,
248 BSTR *pBstrDescription)
249{
250 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
251
252 TRACE("(%p)->(pBstrDescription=%p)\n",This,pBstrDescription);
253 if (pBstrDescription == NULL)
254 return E_INVALIDARG;
255 *pBstrDescription = ERRORINFO_SysAllocString(This->bstrDescription);
256
257 return S_OK;
258}
259
260static HRESULT WINAPI IErrorInfoImpl_GetHelpFile(
261 IErrorInfo* iface,
262 BSTR *pBstrHelpFile)
263{
264 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
265
266 TRACE("(%p)->(pBstrHelpFile=%p)\n",This, pBstrHelpFile);
267 if (pBstrHelpFile == NULL)
268 return E_INVALIDARG;
269 *pBstrHelpFile = ERRORINFO_SysAllocString(This->bstrHelpFile);
270
271 return S_OK;
272}
273
274static HRESULT WINAPI IErrorInfoImpl_GetHelpContext(
275 IErrorInfo* iface,
276 DWORD *pdwHelpContext)
277{
278 _ICOM_THIS_From_IErrorInfo(ErrorInfoImpl, iface);
279 TRACE("(%p)->(pdwHelpContext=%p)\n",This, pdwHelpContext);
280 if (pdwHelpContext == NULL)
281 return E_INVALIDARG;
282 *pdwHelpContext = This->m_dwHelpContext;
283
284 return S_OK;
285}
286
287static ICOM_VTABLE(IErrorInfo) IErrorInfoImpl_VTable =
288{
289 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
290 IErrorInfoImpl_QueryInterface,
291 IErrorInfoImpl_AddRef,
292 IErrorInfoImpl_Release,
293
294 IErrorInfoImpl_GetGUID,
295 IErrorInfoImpl_GetSource,
296 IErrorInfoImpl_GetDescription,
297 IErrorInfoImpl_GetHelpFile,
298 IErrorInfoImpl_GetHelpContext
299};
300
301
302static HRESULT WINAPI ICreateErrorInfoImpl_QueryInterface(
303 ICreateErrorInfo* iface,
304 REFIID riid,
305 VOID** ppvoid)
306{
307 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
308 TRACE("(%p)\n", This);
309 return IErrorInfo_QueryInterface(_IErrorInfo_(This), riid, ppvoid);
310}
311
312static ULONG WINAPI ICreateErrorInfoImpl_AddRef(
313 ICreateErrorInfo* iface)
314{
315 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
316 TRACE("(%p)\n", This);
317 return IErrorInfo_AddRef(_IErrorInfo_(This));
318}
319
320static ULONG WINAPI ICreateErrorInfoImpl_Release(
321 ICreateErrorInfo* iface)
322{
323 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
324 TRACE("(%p)\n", This);
325 return IErrorInfo_Release(_IErrorInfo_(This));
326}
327
328
329static HRESULT WINAPI ICreateErrorInfoImpl_SetGUID(
330 ICreateErrorInfo* iface,
331 REFGUID rguid)
332{
333 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
334 TRACE("(%p)->(%s)\n", This, debugstr_guid(rguid));
335 memcpy(&This->m_Guid, rguid, sizeof(GUID));
336 return S_OK;
337}
338
339static HRESULT WINAPI ICreateErrorInfoImpl_SetSource(
340 ICreateErrorInfo* iface,
341 LPOLESTR szSource)
342{
343 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
344 TRACE("(%p)\n",This);
345 if (This->bstrSource != NULL)
346 ERRORINFO_SysFreeString(This->bstrSource);
347 This->bstrSource = ERRORINFO_SysAllocString(szSource);
348
349 return S_OK;
350}
351
352static HRESULT WINAPI ICreateErrorInfoImpl_SetDescription(
353 ICreateErrorInfo* iface,
354 LPOLESTR szDescription)
355{
356 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
357 TRACE("(%p)\n",This);
358 if (This->bstrDescription != NULL)
359 ERRORINFO_SysFreeString(This->bstrDescription);
360 This->bstrDescription = ERRORINFO_SysAllocString(szDescription);
361
362 return S_OK;
363}
364
365static HRESULT WINAPI ICreateErrorInfoImpl_SetHelpFile(
366 ICreateErrorInfo* iface,
367 LPOLESTR szHelpFile)
368{
369 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
370 TRACE("(%p)\n",This);
371 if (This->bstrHelpFile != NULL)
372 ERRORINFO_SysFreeString(This->bstrHelpFile);
373 This->bstrHelpFile = ERRORINFO_SysAllocString(szHelpFile);
374
375 return S_OK;
376}
377
378static HRESULT WINAPI ICreateErrorInfoImpl_SetHelpContext(
379 ICreateErrorInfo* iface,
380 DWORD dwHelpContext)
381{
382 _ICOM_THIS_From_ICreateErrorInfo(ErrorInfoImpl, iface);
383 TRACE("(%p)\n",This);
384 This->m_dwHelpContext = dwHelpContext;
385
386 return S_OK;
387}
388
389static ICOM_VTABLE(ICreateErrorInfo) ICreateErrorInfoImpl_VTable =
390{
391 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
392 ICreateErrorInfoImpl_QueryInterface,
393 ICreateErrorInfoImpl_AddRef,
394 ICreateErrorInfoImpl_Release,
395
396 ICreateErrorInfoImpl_SetGUID,
397 ICreateErrorInfoImpl_SetSource,
398 ICreateErrorInfoImpl_SetDescription,
399 ICreateErrorInfoImpl_SetHelpFile,
400 ICreateErrorInfoImpl_SetHelpContext
401};
402
403static HRESULT WINAPI ISupportErrorInfoImpl_QueryInterface(
404 ISupportErrorInfo* iface,
405 REFIID riid,
406 VOID** ppvoid)
407{
408 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
409 TRACE("(%p)\n", This);
410
411 return IErrorInfo_QueryInterface(_IErrorInfo_(This), riid, ppvoid);
412}
413
414static ULONG WINAPI ISupportErrorInfoImpl_AddRef(
415 ISupportErrorInfo* iface)
416{
417 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
418 TRACE("(%p)\n", This);
419 return IErrorInfo_AddRef(_IErrorInfo_(This));
420}
421
422static ULONG WINAPI ISupportErrorInfoImpl_Release(
423 ISupportErrorInfo* iface)
424{
425 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
426 TRACE("(%p)\n", This);
427 return IErrorInfo_Release(_IErrorInfo_(This));
428}
429
430
431static HRESULT WINAPI ISupportErrorInfoImpl_InterfaceSupportsErrorInfo(
432 ISupportErrorInfo* iface,
433 REFIID riid)
434{
435 _ICOM_THIS_From_ISupportErrorInfo(ErrorInfoImpl, iface);
436 TRACE("(%p)->(%s)\n", This, debugstr_guid(riid));
437 return (IsEqualIID(riid, &This->m_Guid)) ? S_OK : S_FALSE;
438}
439
440static ICOM_VTABLE(ISupportErrorInfo) ISupportErrorInfoImpl_VTable =
441{
442 ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
443 ISupportErrorInfoImpl_QueryInterface,
444 ISupportErrorInfoImpl_AddRef,
445 ISupportErrorInfoImpl_Release,
446
447
448 ISupportErrorInfoImpl_InterfaceSupportsErrorInfo
449};
450/***********************************************************************
451 * CreateErrorInfo
452 */
453HRESULT WINAPI CreateErrorInfo(ICreateErrorInfo **pperrinfo)
454{
455 IErrorInfo * pei;
456 HRESULT res;
457 TRACE("(%p): stub:\n", pperrinfo);
458 if(! pperrinfo ) return E_INVALIDARG;
459 if(!(pei=IErrorInfoImpl_Constructor()))return E_OUTOFMEMORY;
460
461 res = IErrorInfo_QueryInterface(pei, &IID_ICreateErrorInfo, (LPVOID*)pperrinfo);
462 IErrorInfo_Release(pei);
463 return res;
464}
465
466/***********************************************************************
467 * GetErrorInfo
468 */
469HRESULT WINAPI GetErrorInfo(ULONG dwReserved, IErrorInfo **pperrinfo)
470{
471 TRACE("(%ld, %p, %p): stub:\n", dwReserved, pperrinfo, NtCurrentTeb()->ErrorInfo);
472
473 if(! pperrinfo ) return E_INVALIDARG;
474 if(!(*pperrinfo = (IErrorInfo*)(NtCurrentTeb()->ErrorInfo))) return S_FALSE;
475
476 /* clear thread error state */
477 NtCurrentTeb()->ErrorInfo = NULL;
478 return S_OK;
479}
480
481/***********************************************************************
482 * SetErrorInfo
483 */
484HRESULT WINAPI SetErrorInfo(ULONG dwReserved, IErrorInfo *perrinfo)
485{
486 IErrorInfo * pei;
487 TRACE("(%ld, %p): stub:\n", dwReserved, perrinfo);
488
489 /* release old errorinfo */
490 pei = (IErrorInfo*)NtCurrentTeb()->ErrorInfo;
491 if(pei) IErrorInfo_Release(pei);
492
493 /* set to new value */
494 NtCurrentTeb()->ErrorInfo = perrinfo;
495 if(perrinfo) IErrorInfo_AddRef(perrinfo);
496 return S_OK;
497}
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