DnDTransferObject.cpp@ 106877

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1	/* $Id: DnDTransferObject.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* DnD - Transfer object implemenation for handling creation/reading/writing to files and directories on host or guest side.
4	*/
5
6	/*
7	* Copyright (C) 2014-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_GUEST_DND
33	#include <VBox/GuestHost/DragAndDrop.h>
34
35	#include <iprt/dir.h>
36	#include <iprt/err.h>
37	#include <iprt/file.h>
38	#include <iprt/fs.h>
39	#include <iprt/path.h>
40	#include <iprt/string.h>
41	#include <iprt/uri.h>
42
43	#include <VBox/log.h>
44
45
46	/*********************************************************************************************************************************
47	* Prototypes *
48	*********************************************************************************************************************************/
49	static int dndTransferObjectCloseInternal(PDNDTRANSFEROBJECT pObj);
50	static int dndTransferObjectQueryInfoInternal(PDNDTRANSFEROBJECT pObj);
51
52
53	/**
54	* Initializes the object, internal version.
55	*
56	* @returns VBox status code.
57	* @param pObj DnD transfer object to initialize.
58	*/
59	static int dndTransferObjectInitInternal(PDNDTRANSFEROBJECT pObj)
60	{
61	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
62
63	pObj->enmType = DNDTRANSFEROBJTYPE_UNKNOWN;
64	pObj->idxDst = 0;
65	pObj->pszPath = NULL;
66
67	RT_ZERO(pObj->u);
68
69	return VINF_SUCCESS;
70	}
71
72	/**
73	* Initializes the object.
74	*
75	* @returns VBox status code.
76	* @param pObj DnD transfer object to initialize.
77	*/
78	int DnDTransferObjectInit(PDNDTRANSFEROBJECT pObj)
79	{
80	return dndTransferObjectInitInternal(pObj);
81	}
82
83	/**
84	* Initializes the object with an expected object type and file path.
85	*
86	* @returns VBox status code.
87	* @param pObj DnD transfer object to initialize.
88	* @param enmType Type we expect this object to be.
89	* @param pcszPathSrcAbs Absolute source (local) path of file this object represents. Can be empty (e.g. for root stuff).
90	* @param pcszPathDst Relative path of file this object represents at the destination.
91	* Together with \a pcszPathSrcAbs this represents the complete absolute local path.
92	*/
93	int DnDTransferObjectInitEx(PDNDTRANSFEROBJECT pObj,
94	DNDTRANSFEROBJTYPE enmType, const char pcszPathSrcAbs, const char pcszPathDst)
95	{
96	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
97	AssertReturn(pObj->enmType == DNDTRANSFEROBJTYPE_UNKNOWN, VERR_WRONG_ORDER); /* Already initialized? */
98	/* pcszPathSrcAbs can be empty. */
99	AssertPtrReturn(pcszPathDst, VERR_INVALID_POINTER);
100
101	int rc = dndTransferObjectInitInternal(pObj);
102	AssertRCReturn(rc, rc);
103
104	rc = DnDPathValidate(pcszPathDst, false /* Does not need to exist */);
105	AssertRCReturn(rc, rc);
106
107	char szPath[RTPATH_MAX + 1];
108
109	/* Save the index (in characters) where the first destination segment starts. */
110	if ( pcszPathSrcAbs
111	&& RTStrNLen(pcszPathSrcAbs, RTSTR_MAX))
112	{
113	rc = DnDPathValidate(pcszPathSrcAbs, false /* Does not need to exist */);
114	if (RT_FAILURE(rc))
115	return rc;
116
117	rc = RTStrCopy(szPath, sizeof(szPath), pcszPathSrcAbs);
118	if (RT_SUCCESS(rc))
119	rc = RTPathEnsureTrailingSeparator(szPath, sizeof(szPath)) == 0 ? VERR_BUFFER_OVERFLOW : VINF_SUCCESS;
120
121	/* Save the index (in characters) where the destination part starts. */
122	pObj->idxDst = (uint16_t)RTStrNLen(szPath, RTPATH_MAX);
123	AssertReturn(pObj->idxDst <= RTPATH_MAX, VERR_INVALID_PARAMETER);
124	}
125	else
126	{
127	szPath[0] = '\0'; /* Init empty string. */
128	pObj->idxDst = 0;
129	}
130
131	if (RT_FAILURE(rc))
132	return rc;
133
134	/* Append the destination part. */
135	rc = RTPathAppend(szPath, sizeof(szPath), pcszPathDst);
136	if ( RT_SUCCESS(rc)
137	&& enmType == DNDTRANSFEROBJTYPE_DIRECTORY)
138	rc = RTPathEnsureTrailingSeparator(szPath, sizeof(szPath)) == 0 ? VERR_BUFFER_OVERFLOW : VINF_SUCCESS;
139
140	if (RT_FAILURE(rc))
141	return rc;
142
143	pObj->pszPath = RTStrDup(szPath);
144	if (!pObj->pszPath)
145	return VERR_NO_MEMORY;
146
147	/* Convert paths into transport format. */
148	rc = DnDPathConvert(pObj->pszPath, strlen(pObj->pszPath), DNDPATHCONVERT_FLAGS_TRANSPORT);
149	if (RT_FAILURE(rc))
150	{
151	RTStrFree(pObj->pszPath);
152	pObj->pszPath = NULL;
153	return rc;
154	}
155
156	LogFlowFunc(("enmType=%RU32, pcszPathSrcAbs=%s, pcszPathDst=%s -> pszPath=%s\n",
157	enmType, pcszPathSrcAbs, pcszPathDst, pObj->pszPath));
158
159	pObj->enmType = enmType;
160
161	return VINF_SUCCESS;
162	}
163
164	/**
165	* Destroys a DnD transfer object.
166	*
167	* @param pObj DnD transfer object to destroy.
168	*/
169	void DnDTransferObjectDestroy(PDNDTRANSFEROBJECT pObj)
170	{
171	if (!pObj)
172	return;
173
174	DnDTransferObjectReset(pObj);
175	}
176
177	/**
178	* Closes the object's internal handles (to files / ...).
179	*
180	* @returns VBox status code.
181	* @param pObj DnD transfer object to close internally.
182	*/
183	static int dndTransferObjectCloseInternal(PDNDTRANSFEROBJECT pObj)
184	{
185	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
186
187	int rc = VINF_SUCCESS;
188
189	if (pObj->pszPath)
190	LogRel2(("DnD: Closing '%s'\n", pObj->pszPath));
191
192	switch (pObj->enmType)
193	{
194	case DNDTRANSFEROBJTYPE_FILE:
195	{
196	if (RTFileIsValid(pObj->u.File.hFile))
197	{
198	rc = RTFileClose(pObj->u.File.hFile);
199	if (RT_SUCCESS(rc))
200	{
201	pObj->u.File.hFile = NIL_RTFILE;
202	RT_ZERO(pObj->u.File.objInfo);
203	}
204	else
205	LogRel(("DnD: Closing file '%s' failed with %Rrc\n", pObj->pszPath, rc));
206	}
207	break;
208	}
209
210	case DNDTRANSFEROBJTYPE_DIRECTORY:
211	{
212	if (RTDirIsValid(pObj->u.Dir.hDir))
213	{
214	rc = RTDirClose(pObj->u.Dir.hDir);
215	if (RT_SUCCESS(rc))
216	{
217	pObj->u.Dir.hDir = NIL_RTDIR;
218	RT_ZERO(pObj->u.Dir.objInfo);
219	}
220	else
221	LogRel(("DnD: Closing directory '%s' failed with %Rrc\n", pObj->pszPath, rc));
222	}
223	break;
224	}
225
226	default:
227	break;
228	}
229
230	return rc;
231	}
232
233	/**
234	* Closes the object.
235	* This also closes the internal handles associated with the object (to files / ...).
236	*
237	* @returns VBox status code.
238	* @param pObj DnD transfer object to close.
239	*/
240	int DnDTransferObjectClose(PDNDTRANSFEROBJECT pObj)
241	{
242	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
243
244	return dndTransferObjectCloseInternal(pObj);
245	}
246
247	/**
248	* Returns the absolute source path of the object.
249	*
250	* @return Absolute source path of the object.
251	* @param pObj DnD transfer object to get source path for.
252	*/
253	const char *DnDTransferObjectGetSourcePath(PDNDTRANSFEROBJECT pObj)
254	{
255	AssertPtrReturn(pObj, NULL);
256	return pObj->pszPath;
257	}
258
259	/**
260	* Returns the (relative) destination path of the object, in transport style.
261	*
262	* @return Relative destination path of the object, or NULL if not set.
263	* @param pObj DnD transfer object to get destination path for.
264	*/
265	const char *DnDTransferObjectGetDestPath(PDNDTRANSFEROBJECT pObj)
266	{
267	AssertPtrReturn(pObj, NULL);
268
269	if (!pObj->pszPath)
270	return NULL;
271
272	AssertReturn(strlen(pObj->pszPath) >= pObj->idxDst, NULL);
273
274	return &pObj->pszPath[pObj->idxDst];
275	}
276
277	/**
278	* Returns the (relative) destination path of the object, extended version.
279	*
280	* @return VBox status code, or VERR_NOT_FOUND if not initialized yet.
281	* @param pObj DnD transfer object to get destination path for.
282	* @param enmStyle Which path style to return.
283	* @param pszBuf Where to store the path.
284	* @param cbBuf Size (in bytes) where to store the path.
285	*/
286	int DnDTransferObjectGetDestPathEx(PDNDTRANSFEROBJECT pObj, DNDTRANSFEROBJPATHSTYLE enmStyle, char *pszBuf, size_t cbBuf)
287	{
288	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
289	AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
290	AssertReturn(cbBuf, VERR_INVALID_PARAMETER);
291
292	if (!pObj->pszPath)
293	return VERR_NOT_FOUND;
294
295	AssertReturn(strlen(pObj->pszPath) >= pObj->idxDst, VERR_INTERNAL_ERROR);
296
297	int rc = RTStrCopy(pszBuf, cbBuf, &pObj->pszPath[pObj->idxDst]);
298	if ( RT_SUCCESS(rc)
299	&& enmStyle == DNDTRANSFEROBJPATHSTYLE_DOS)
300	rc = DnDPathConvert(pszBuf, cbBuf, DNDPATHCONVERT_FLAGS_TO_DOS);
301
302	return rc;
303	}
304
305	/**
306	* Returns the directory / file mode of the object.
307	*
308	* @return File / directory mode.
309	* @param pObj DnD transfer object to get directory / file mode for.
310	*/
311	RTFMODE DnDTransferObjectGetMode(PDNDTRANSFEROBJECT pObj)
312	{
313	AssertPtrReturn(pObj, 0);
314
315	switch (pObj->enmType)
316	{
317	case DNDTRANSFEROBJTYPE_FILE:
318	return pObj->u.File.objInfo.Attr.fMode;
319
320	case DNDTRANSFEROBJTYPE_DIRECTORY:
321	return pObj->u.Dir.objInfo.Attr.fMode;
322
323	default:
324	break;
325	}
326
327	return 0;
328	}
329
330	/**
331	* Returns the bytes already processed (read / written).
332	*
333	* Note: Only applies if the object is of type DnDTransferObjectType_File.
334	*
335	* @return Bytes already processed (read / written).
336	* @param pObj DnD transfer object to get processed bytes for.
337	*/
338	uint64_t DnDTransferObjectGetProcessed(PDNDTRANSFEROBJECT pObj)
339	{
340	if (pObj->enmType == DNDTRANSFEROBJTYPE_FILE)
341	return pObj->u.File.cbProcessed;
342
343	return 0;
344	}
345
346	/**
347	* Returns the file's logical size (in bytes).
348	*
349	* Note: Only applies if the object is of type DnDTransferObjectType_File.
350	*
351	* @return The file's logical size (in bytes).
352	* @param pObj DnD transfer object to get size for.
353	*/
354	uint64_t DnDTransferObjectGetSize(PDNDTRANSFEROBJECT pObj)
355	{
356	if (pObj->enmType == DNDTRANSFEROBJTYPE_FILE)
357	return pObj->u.File.cbToProcess;
358
359	return 0;
360	}
361
362	/**
363	* Returns the object's type.
364	*
365	* @return The object's type.
366	* @param pObj DnD transfer object to get type for.
367	*/
368	DNDTRANSFEROBJTYPE DnDTransferObjectGetType(PDNDTRANSFEROBJECT pObj)
369	{
370	return pObj->enmType;
371	}
372
373	/**
374	* Returns whether the processing of the object is complete or not.
375	* For file objects this means that all bytes have been processed.
376	*
377	* @return True if complete, False if not.
378	* @param pObj DnD transfer object to get completion status for.
379	*/
380	bool DnDTransferObjectIsComplete(PDNDTRANSFEROBJECT pObj)
381	{
382	bool fComplete;
383
384	switch (pObj->enmType)
385	{
386	case DNDTRANSFEROBJTYPE_FILE:
387	Assert(pObj->u.File.cbProcessed <= pObj->u.File.cbToProcess);
388	fComplete = pObj->u.File.cbProcessed == pObj->u.File.cbToProcess;
389	break;
390
391	case DNDTRANSFEROBJTYPE_DIRECTORY:
392	fComplete = true;
393	break;
394
395	default:
396	fComplete = true;
397	break;
398	}
399
400	return fComplete;
401	}
402
403	/**
404	* Returns whether the object is in an open state or not.
405	* @param pObj DnD transfer object to get open status for.
406	*/
407	bool DnDTransferObjectIsOpen(PDNDTRANSFEROBJECT pObj)
408	{
409	switch (pObj->enmType)
410	{
411	case DNDTRANSFEROBJTYPE_FILE: return RTFileIsValid(pObj->u.File.hFile);
412	case DNDTRANSFEROBJTYPE_DIRECTORY: return RTDirIsValid(pObj->u.Dir.hDir);
413	default: break;
414	}
415
416	return false;
417	}
418
419	/**
420	* Open the object with a specific file type, and, depending on the type, specifying additional parameters.
421	*
422	* @return IPRT status code.
423	* @param pObj DnD transfer object to open.
424	* @param fOpen Open mode to use; only valid for file objects.
425	* @param fMode File mode to set; only valid for file objects. Depends on fOpen and and can be 0.
426	* @param fFlags Additional DnD transfer object flags.
427	*/
428	int DnDTransferObjectOpen(PDNDTRANSFEROBJECT pObj, uint64_t fOpen, RTFMODE fMode, DNDTRANSFEROBJECTFLAGS fFlags)
429	{
430	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
431	AssertReturn(fOpen, VERR_INVALID_FLAGS);
432	/* fMode is optional. */
433	AssertReturn(!(fFlags & ~DNDTRANSFEROBJECT_FLAGS_VALID_MASK), VERR_INVALID_FLAGS);
434	RT_NOREF1(fFlags);
435
436	int rc = VINF_SUCCESS;
437
438	LogFlowFunc(("pszPath=%s, fOpen=0x%x, fMode=0x%x, fFlags=0x%x\n", pObj->pszPath, fOpen, fMode, fFlags));
439
440	switch (pObj->enmType)
441	{
442	case DNDTRANSFEROBJTYPE_FILE:
443	{
444	LogRel2(("DnD: Opening file '%s'\n", pObj->pszPath));
445
446	/*
447	* Open files on the source with RTFILE_O_DENY_WRITE to prevent races
448	* where the OS writes to the file while the destination side transfers
449	* it over.
450	*/
451	rc = RTFileOpen(&pObj->u.File.hFile, pObj->pszPath, fOpen);
452	if (RT_SUCCESS(rc))
453	{
454	if ( (fOpen & RTFILE_O_WRITE) /* Only set the file mode on write. */
455	&& fMode /* Some file mode to set specified? */)
456	{
457	rc = RTFileSetMode(pObj->u.File.hFile, fMode);
458	if (RT_FAILURE(rc))
459	LogRel(("DnD: Setting mode %#x for file '%s' failed with %Rrc\n", fMode, pObj->pszPath, rc));
460	}
461	else if (fOpen & RTFILE_O_READ)
462	{
463	rc = dndTransferObjectQueryInfoInternal(pObj);
464	}
465	}
466	else
467	LogRel(("DnD: Opening file '%s' failed with %Rrc\n", pObj->pszPath, rc));
468
469	if (RT_SUCCESS(rc))
470	{
471	LogFlowFunc(("File cbObject=%RU64, fMode=0x%x\n",
472	pObj->u.File.objInfo.cbObject, pObj->u.File.objInfo.Attr.fMode));
473	pObj->u.File.cbToProcess = pObj->u.File.objInfo.cbObject;
474	pObj->u.File.cbProcessed = 0;
475	}
476
477	break;
478	}
479
480	case DNDTRANSFEROBJTYPE_DIRECTORY:
481	{
482	LogRel2(("DnD: Opening directory '%s'\n", pObj->pszPath));
483
484	rc = RTDirOpen(&pObj->u.Dir.hDir, pObj->pszPath);
485	if (RT_SUCCESS(rc))
486	{
487	rc = dndTransferObjectQueryInfoInternal(pObj);
488	}
489	else
490	LogRel(("DnD: Opening directory '%s' failed with %Rrc\n", pObj->pszPath, rc));
491	break;
492	}
493
494	default:
495	rc = VERR_NOT_IMPLEMENTED;
496	break;
497	}
498
499	LogFlowFuncLeaveRC(rc);
500	return rc;
501	}
502
503	/**
504	* Queries information about the object using a specific view, internal version.
505	*
506	* @return IPRT status code.
507	* @param pObj DnD transfer object to query info for.
508	*/
509	static int dndTransferObjectQueryInfoInternal(PDNDTRANSFEROBJECT pObj)
510	{
511	int rc;
512
513	switch (pObj->enmType)
514	{
515	case DNDTRANSFEROBJTYPE_FILE:
516	AssertMsgReturn(RTFileIsValid(pObj->u.File.hFile), ("Object has invalid file handle\n"), VERR_INVALID_STATE);
517	rc = RTFileQueryInfo(pObj->u.File.hFile, &pObj->u.File.objInfo, RTFSOBJATTRADD_NOTHING);
518	break;
519
520	case DNDTRANSFEROBJTYPE_DIRECTORY:
521	AssertMsgReturn(RTDirIsValid(pObj->u.Dir.hDir), ("Object has invalid directory handle\n"), VERR_INVALID_STATE);
522	rc = RTDirQueryInfo(pObj->u.Dir.hDir, &pObj->u.Dir.objInfo, RTFSOBJATTRADD_NOTHING);
523	break;
524
525	default:
526	rc = VERR_NOT_IMPLEMENTED;
527	break;
528	}
529
530	if (RT_FAILURE(rc))
531	LogRel(("DnD: Querying information for '%s' failed with %Rrc\n", pObj->pszPath, rc));
532
533	return rc;
534	}
535
536	/**
537	* Queries information about the object using a specific view.
538	*
539	* @return IPRT status code.
540	* @param pObj DnD transfer object to query info for.
541	*/
542	int DnDTransferObjectQueryInfo(PDNDTRANSFEROBJECT pObj)
543	{
544	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
545	return dndTransferObjectQueryInfoInternal(pObj);
546	}
547
548	/**
549	* Reads data from the object. Only applies to files objects.
550	*
551	* @return IPRT status code.
552	* @param pObj DnD transfer object to read data from.
553	* @param pvBuf Buffer where to store the read data.
554	* @param cbBuf Size (in bytes) of the buffer.
555	* @param pcbRead Pointer where to store how many bytes were read. Optional.
556	*/
557	int DnDTransferObjectRead(PDNDTRANSFEROBJECT pObj, void pvBuf, size_t cbBuf, uint32_t pcbRead)
558	{
559	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
560	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
561	AssertReturn(cbBuf, VERR_INVALID_PARAMETER);
562	/* pcbRead is optional. */
563
564	size_t cbRead = 0;
565
566	int rc;
567	switch (pObj->enmType)
568	{
569	case DNDTRANSFEROBJTYPE_FILE:
570	{
571	rc = RTFileRead(pObj->u.File.hFile, pvBuf, cbBuf, &cbRead);
572	if (RT_SUCCESS(rc))
573	{
574	pObj->u.File.cbProcessed += cbRead;
575	Assert(pObj->u.File.cbProcessed <= pObj->u.File.cbToProcess);
576
577	/* End of file reached or error occurred? */
578	if ( pObj->u.File.cbToProcess
579	&& pObj->u.File.cbProcessed == pObj->u.File.cbToProcess)
580	{
581	rc = VINF_EOF;
582	}
583	}
584	else
585	LogRel(("DnD: Reading from file '%s' failed with %Rrc\n", pObj->pszPath, rc));
586	break;
587	}
588
589	case DNDTRANSFEROBJTYPE_DIRECTORY:
590	{
591	rc = VINF_SUCCESS;
592	break;
593	}
594
595	default:
596	rc = VERR_NOT_IMPLEMENTED;
597	break;
598	}
599
600	if (RT_SUCCESS(rc))
601	{
602	if (pcbRead)
603	*pcbRead = (uint32_t)cbRead;
604	}
605
606	LogFlowFunc(("Returning cbRead=%zu, rc=%Rrc\n", cbRead, rc));
607	return rc;
608	}
609
610	/**
611	* Resets the object's state and closes all related handles.
612	*
613	* @param pObj DnD transfer object to reset.
614	*/
615	void DnDTransferObjectReset(PDNDTRANSFEROBJECT pObj)
616	{
617	AssertPtrReturnVoid(pObj);
618
619	LogFlowFuncEnter();
620
621	int vrc2 = dndTransferObjectCloseInternal(pObj);
622	AssertRCReturnVoid(vrc2);
623
624	pObj->enmType = DNDTRANSFEROBJTYPE_UNKNOWN;
625	pObj->idxDst = 0;
626
627	RTStrFree(pObj->pszPath);
628	pObj->pszPath = NULL;
629
630	RT_ZERO(pObj->u);
631	}
632
633	/**
634	* Sets the bytes to process by the object.
635	*
636	* Note: Only applies if the object is of type DnDTransferObjectType_File.
637	*
638	* @return IPRT return code.
639	* @param pObj DnD transfer object to set size for.
640	* @param cbSize Size (in bytes) to process.
641	*/
642	int DnDTransferObjectSetSize(PDNDTRANSFEROBJECT pObj, uint64_t cbSize)
643	{
644	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
645	AssertReturn(pObj->enmType == DNDTRANSFEROBJTYPE_FILE, VERR_INVALID_PARAMETER);
646
647	/** @todo Implement sparse file support here. */
648
649	pObj->u.File.cbToProcess = cbSize;
650	return VINF_SUCCESS;
651	}
652
653	/**
654	* Writes data to an object. Only applies to file objects.
655	*
656	* @return IPRT status code.
657	* @param pObj DnD transfer object to write to.
658	* @param pvBuf Buffer of data to write.
659	* @param cbBuf Size (in bytes) of data to write.
660	* @param pcbWritten Pointer where to store how many bytes were written. Optional.
661	*/
662	int DnDTransferObjectWrite(PDNDTRANSFEROBJECT pObj, const void pvBuf, size_t cbBuf, uint32_t pcbWritten)
663	{
664	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
665	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
666	AssertReturn(cbBuf, VERR_INVALID_PARAMETER);
667	/* pcbWritten is optional. */
668
669	size_t cbWritten = 0;
670
671	int rc;
672	switch (pObj->enmType)
673	{
674	case DNDTRANSFEROBJTYPE_FILE:
675	{
676	rc = RTFileWrite(pObj->u.File.hFile, pvBuf, cbBuf, &cbWritten);
677	if (RT_SUCCESS(rc))
678	{
679	pObj->u.File.cbProcessed += cbWritten;
680	}
681	else
682	LogRel(("DnD: Writing to file '%s' failed with %Rrc\n", pObj->pszPath, rc));
683	break;
684	}
685
686	case DNDTRANSFEROBJTYPE_DIRECTORY:
687	{
688	rc = VINF_SUCCESS;
689	break;
690	}
691
692	default:
693	rc = VERR_NOT_IMPLEMENTED;
694	break;
695	}
696
697	if (RT_SUCCESS(rc))
698	{
699	if (pcbWritten)
700	*pcbWritten = (uint32_t)cbWritten;
701	}
702
703	LogFlowFunc(("Returning cbWritten=%zu, rc=%Rrc\n", cbWritten, rc));
704	return rc;
705	}
706

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source: vbox/trunk/src/VBox/GuestHost/DragAndDrop/DnDTransferObject.cpp@ 106877

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