GuestDnDPrivate.cpp@ 77924

Last change on this file since 77924 was 76891, checked in by vboxsync, 6 years ago
DnD: Renamed HOST_DND_HG_EVT_CANCEL -> HOST_DND_HG_CANCEL, fixes for host-side cancellation.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 32.9 KB

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1	/* $Id: GuestDnDPrivate.cpp 76891 2019-01-18 13:17:20Z vboxsync $ */
2	/** @file
3	* Private guest drag and drop code, used by GuestDnDTarget + GuestDnDSource.
4	*/
5
6	/*
7	* Copyright (C) 2011-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#define LOG_GROUP LOG_GROUP_GUEST_DND
19	#include "LoggingNew.h"
20
21	#include "GuestImpl.h"
22	#include "AutoCaller.h"
23
24	#ifdef VBOX_WITH_DRAG_AND_DROP
25	# include "ConsoleImpl.h"
26	# include "ProgressImpl.h"
27	# include "GuestDnDPrivate.h"
28
29	# include <algorithm>
30
31	# include <iprt/dir.h>
32	# include <iprt/path.h>
33	# include <iprt/stream.h>
34	# include <iprt/semaphore.h>
35	# include <iprt/cpp/utils.h>
36
37	# include <VMMDev.h>
38
39	# include <VBox/GuestHost/DragAndDrop.h>
40	# include <VBox/HostServices/DragAndDropSvc.h>
41	# include <VBox/version.h>
42
43	/** @page pg_main_dnd Dungeons & Dragons - Overview
44	* Overview:
45	*
46	* Drag and Drop is handled over the internal HGCM service for the host <->
47	* guest communication. Beside that we need to map the Drag and Drop protocols
48	* of the various OS's we support to our internal channels, this is also highly
49	* communicative in both directions. Unfortunately HGCM isn't really designed
50	* for that. Next we have to foul some of the components. This includes to
51	* trick X11 on the guest side, but also Qt needs to be tricked on the host
52	* side a little bit.
53	*
54	* The following components are involved:
55	*
56	* 1. GUI: Uses the Qt classes for Drag and Drop and mainly forward the content
57	* of it to the Main IGuest interface (see UIDnDHandler.cpp).
58	* 2. Main: Public interface for doing Drag and Drop. Also manage the IProgress
59	* interfaces for blocking the caller by showing a progress dialog (see
60	* this file).
61	* 3. HGCM service: Handle all messages from the host to the guest at once and
62	* encapsulate the internal communication details (see dndmanager.cpp and
63	* friends).
64	* 4. Guest additions: Split into the platform neutral part (see
65	* VBoxGuestR3LibDragAndDrop.cpp) and the guest OS specific parts.
66	* Receive/send message from/to the HGCM service and does all guest specific
67	* operations. Currently only X11 is supported (see draganddrop.cpp within
68	* VBoxClient).
69	*
70	* Host -> Guest:
71	* 1. There are DnD Enter, Move, Leave events which are send exactly like this
72	* to the guest. The info includes the pos, mimetypes and allowed actions.
73	* The guest has to respond with an action it would accept, so the GUI could
74	* change the cursor.
75	* 2. On drop, first a drop event is sent. If this is accepted a drop data
76	* event follows. This blocks the GUI and shows some progress indicator.
77	*
78	* Guest -> Host:
79	* 1. The GUI is asking the guest if a DnD event is pending when the user moves
80	* the cursor out of the view window. If so, this returns the mimetypes and
81	* allowed actions.
82	* (2. On every mouse move this is asked again, to make sure the DnD event is
83	* still valid.)
84	* 3. On drop the host request the data from the guest. This blocks the GUI and
85	* shows some progress indicator.
86	*
87	* Some hints:
88	* m_strSupportedFormats here in this file defines the allowed mime-types.
89	* This is necessary because we need special handling for some of the
90	* mime-types. E.g. for URI lists we need to transfer the actual dirs and
91	* files. Text EOL may to be changed. Also unknown mime-types may need special
92	* handling as well, which may lead to undefined behavior in the host/guest, if
93	* not done.
94	*
95	* Dropping of a directory, means recursively transferring _all_ the content.
96	*
97	* Directories and files are placed into the user's temporary directory on the
98	* guest (e.g. /tmp/VirtualBox Dropped Files). We can't delete them after the
99	* DnD operation, because we didn't know what the DnD target does with it. E.g.
100	* it could just be opened in place. This could lead ofc to filling up the disk
101	* within the guest. To inform the user about this, a small app could be
102	* developed which scans this directory regularly and inform the user with a
103	* tray icon hint (and maybe the possibility to clean this up instantly). The
104	* same has to be done in the G->H direction when it is implemented.
105	*
106	* Of course only regularly files are supported. Symlinks are resolved and
107	* transfered as regularly files. First we don't know if the other side support
108	* symlinks at all and second they could point to somewhere in a directory tree
109	* which not exists on the other side.
110	*
111	* The code tries to preserve the file modes of the transfered dirs/files. This
112	* is useful (and maybe necessary) for two things:
113	* 1. If a file is executable, it should be also after the transfer, so the
114	* user can just execute it, without manually tweaking the modes first.
115	* 2. If a dir/file is not accessible by group/others in the host, it shouldn't
116	* be in the guest.
117	* In any case, the user mode is always set to rwx (so that we can access it
118	* ourself, in e.g. for a cleanup case after cancel).
119	*
120	* Cancel is supported in both directions and cleans up all previous steps
121	* (thats is: deleting already transfered dirs/files).
122	*
123	* In general I propose the following changes in the VBox HGCM infrastructure
124	* for the future:
125	* - Currently it isn't really possible to send messages to the guest from the
126	* host. The host informs the guest just that there is something, the guest
127	* than has to ask which message and depending on that send the appropriate
128	* message to the host, which is filled with the right data.
129	* - There is no generic interface for sending bigger memory blocks to/from the
130	* guest. This is now done here, but I guess was also necessary for e.g.
131	* guest execution. So something generic which brake this up into smaller
132	* blocks and send it would be nice (with all the error handling and such
133	* ofc).
134	* - I developed a "protocol" for the DnD communication here. So the host and
135	* the guest have always to match in the revision. This is ofc bad, because
136	* the additions could be outdated easily. So some generic protocol number
137	* support in HGCM for asking the host and the guest of the support version,
138	* would be nice. Ofc at least the host should be able to talk to the guest,
139	* even when the version is below the host one.
140	* All this stuff would be useful for the current services, but also for future
141	* onces.
142	*
143	** @todo
144	* - ESC doesn't really work (on Windows guests it's already implemented)
145	* ... in any case it seems a little bit difficult to handle from the Qt
146	* side. Maybe also a host specific implementation becomes necessary ...
147	* this would be really worst ofc.
148	* - Add support for more mime-types (especially images, csv)
149	* - Test unusual behavior:
150	* - DnD service crash in the guest during a DnD op (e.g. crash of VBoxClient or X11)
151	* - Not expected order of the events between HGCM and the guest
152	* - Security considerations: We transfer a lot of memory between the guest and
153	* the host and even allow the creation of dirs/files. Maybe there should be
154	* limits introduced to preventing DOS attacks or filling up all the memory
155	* (both in the host and the guest).
156	*/
157
158	GuestDnDCallbackEvent::~GuestDnDCallbackEvent(void)
159	{
160	if (NIL_RTSEMEVENT != mSemEvent)
161	RTSemEventDestroy(mSemEvent);
162	}
163
164	int GuestDnDCallbackEvent::Reset(void)
165	{
166	int rc = VINF_SUCCESS;
167
168	if (NIL_RTSEMEVENT == mSemEvent)
169	rc = RTSemEventCreate(&mSemEvent);
170
171	mRc = VINF_SUCCESS;
172	return rc;
173	}
174
175	int GuestDnDCallbackEvent::Notify(int rc /* = VINF_SUCCESS */)
176	{
177	mRc = rc;
178	return RTSemEventSignal(mSemEvent);
179	}
180
181	int GuestDnDCallbackEvent::Wait(RTMSINTERVAL msTimeout)
182	{
183	return RTSemEventWait(mSemEvent, msTimeout);
184	}
185
186	///////////////////////////////////////////////////////////////////////////////
187
188	GuestDnDResponse::GuestDnDResponse(const ComObjPtr<Guest>& pGuest)
189	: m_EventSem(NIL_RTSEMEVENT)
190	, m_dndActionDefault(0)
191	, m_dndLstActionsAllowed(0)
192	, m_pParent(pGuest)
193	{
194	int rc = RTSemEventCreate(&m_EventSem);
195	if (RT_FAILURE(rc))
196	throw rc;
197	}
198
199	GuestDnDResponse::~GuestDnDResponse(void)
200	{
201	reset();
202
203	int rc = RTSemEventDestroy(m_EventSem);
204	AssertRC(rc);
205	}
206
207	int GuestDnDResponse::notifyAboutGuestResponse(void) const
208	{
209	return RTSemEventSignal(m_EventSem);
210	}
211
212	void GuestDnDResponse::reset(void)
213	{
214	LogFlowThisFuncEnter();
215
216	m_dndActionDefault = 0;
217	m_dndLstActionsAllowed = 0;
218
219	m_lstFormats.clear();
220	}
221
222	HRESULT GuestDnDResponse::resetProgress(const ComObjPtr<Guest>& pParent)
223	{
224	m_pProgress.setNull();
225
226	HRESULT hr = m_pProgress.createObject();
227	if (SUCCEEDED(hr))
228	{
229	hr = m_pProgress->init(static_cast<IGuest *>(pParent),
230	Bstr(pParent->tr("Dropping data")).raw(),
231	TRUE /* aCancelable */);
232	}
233
234	return hr;
235	}
236
237	bool GuestDnDResponse::isProgressCanceled(void) const
238	{
239	BOOL fCanceled;
240	if (!m_pProgress.isNull())
241	{
242	HRESULT hr = m_pProgress->COMGETTER(Canceled)(&fCanceled);
243	AssertComRC(hr);
244	}
245	else
246	fCanceled = TRUE;
247
248	return RT_BOOL(fCanceled);
249	}
250
251	int GuestDnDResponse::setCallback(uint32_t uMsg, PFNGUESTDNDCALLBACK pfnCallback, void pvUser / = NULL */)
252	{
253	GuestDnDCallbackMap::iterator it = m_mapCallbacks.find(uMsg);
254
255	/* Add. */
256	if (pfnCallback)
257	{
258	if (it == m_mapCallbacks.end())
259	{
260	m_mapCallbacks[uMsg] = GuestDnDCallback(pfnCallback, uMsg, pvUser);
261	return VINF_SUCCESS;
262	}
263
264	AssertMsgFailed(("Callback for message %RU32 already registered\n", uMsg));
265	return VERR_ALREADY_EXISTS;
266	}
267
268	/* Remove. */
269	if (it != m_mapCallbacks.end())
270	m_mapCallbacks.erase(it);
271
272	return VINF_SUCCESS;
273	}
274
275	int GuestDnDResponse::setProgress(unsigned uPercentage,
276	uint32_t uStatus,
277	int rcOp /* = VINF_SUCCESS /, const Utf8Str &strMsg / = "" */)
278	{
279	RT_NOREF(rcOp);
280	LogFlowFunc(("uStatus=%RU32, uPercentage=%RU32, rcOp=%Rrc, strMsg=%s\n",
281	uStatus, uPercentage, rcOp, strMsg.c_str()));
282
283	int rc = VINF_SUCCESS;
284	if (!m_pProgress.isNull())
285	{
286	BOOL fCompleted;
287	HRESULT hr = m_pProgress->COMGETTER(Completed)(&fCompleted);
288	AssertComRC(hr);
289
290	BOOL fCanceled;
291	hr = m_pProgress->COMGETTER(Canceled)(&fCanceled);
292	AssertComRC(hr);
293
294	LogFlowFunc(("Current: fCompleted=%RTbool, fCanceled=%RTbool\n", fCompleted, fCanceled));
295
296	if (!fCompleted)
297	{
298	switch (uStatus)
299	{
300	case DragAndDropSvc::DND_PROGRESS_ERROR:
301	{
302	hr = m_pProgress->i_notifyComplete(VBOX_E_IPRT_ERROR,
303	COM_IIDOF(IGuest),
304	m_pParent->getComponentName(), strMsg.c_str());
305	reset();
306	break;
307	}
308
309	case DragAndDropSvc::DND_PROGRESS_CANCELLED:
310	{
311	hr = m_pProgress->Cancel();
312	AssertComRC(hr);
313	hr = m_pProgress->i_notifyComplete(S_OK);
314	AssertComRC(hr);
315
316	reset();
317	break;
318	}
319
320	case DragAndDropSvc::DND_PROGRESS_RUNNING:
321	case DragAndDropSvc::DND_PROGRESS_COMPLETE:
322	{
323	if (!fCanceled)
324	{
325	hr = m_pProgress->SetCurrentOperationProgress(uPercentage);
326	AssertComRC(hr);
327	if ( uStatus == DragAndDropSvc::DND_PROGRESS_COMPLETE
328	\|\| uPercentage >= 100)
329	{
330	hr = m_pProgress->i_notifyComplete(S_OK);
331	AssertComRC(hr);
332	}
333	}
334	break;
335	}
336
337	default:
338	break;
339	}
340	}
341
342	hr = m_pProgress->COMGETTER(Completed)(&fCompleted);
343	AssertComRC(hr);
344	hr = m_pProgress->COMGETTER(Canceled)(&fCanceled);
345	AssertComRC(hr);
346
347	LogFlowFunc(("New: fCompleted=%RTbool, fCanceled=%RTbool\n", fCompleted, fCanceled));
348	}
349
350	LogFlowFuncLeaveRC(rc);
351	return rc;
352	}
353
354	int GuestDnDResponse::onDispatch(uint32_t u32Function, void *pvParms, uint32_t cbParms)
355	{
356	LogFlowFunc(("u32Function=%RU32, pvParms=%p, cbParms=%RU32\n", u32Function, pvParms, cbParms));
357
358	int rc = VERR_WRONG_ORDER; /* Play safe. */
359	bool fTryCallbacks = false;
360
361	switch (u32Function)
362	{
363	case DragAndDropSvc::GUEST_DND_CONNECT:
364	{
365	LogThisFunc(("Client connected\n"));
366
367	/* Nothing to do here (yet). */
368	rc = VINF_SUCCESS;
369	break;
370	}
371
372	case DragAndDropSvc::GUEST_DND_DISCONNECT:
373	{
374	LogThisFunc(("Client disconnected\n"));
375	rc = setProgress(100, DND_PROGRESS_CANCELLED, VINF_SUCCESS);
376	break;
377	}
378
379	case DragAndDropSvc::GUEST_DND_HG_ACK_OP:
380	{
381	DragAndDropSvc::PVBOXDNDCBHGACKOPDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGACKOPDATA>(pvParms);
382	AssertPtr(pCBData);
383	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGACKOPDATA) == cbParms, VERR_INVALID_PARAMETER);
384	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_ACK_OP == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
385
386	setActionDefault(pCBData->uAction);
387	rc = notifyAboutGuestResponse();
388	break;
389	}
390
391	case DragAndDropSvc::GUEST_DND_HG_REQ_DATA:
392	{
393	DragAndDropSvc::PVBOXDNDCBHGREQDATADATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGREQDATADATA>(pvParms);
394	AssertPtr(pCBData);
395	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGREQDATADATA) == cbParms, VERR_INVALID_PARAMETER);
396	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_REQ_DATA == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
397
398	if ( pCBData->cbFormat == 0
399	\|\| pCBData->cbFormat > _64K /** @todo Make this configurable? */
400	\|\| pCBData->pszFormat == NULL)
401	{
402	rc = VERR_INVALID_PARAMETER;
403	}
404	else if (!RTStrIsValidEncoding(pCBData->pszFormat))
405	{
406	rc = VERR_INVALID_PARAMETER;
407	}
408	else
409	{
410	setFormats(GuestDnD::toFormatList(pCBData->pszFormat));
411	rc = VINF_SUCCESS;
412	}
413
414	int rc2 = notifyAboutGuestResponse();
415	if (RT_SUCCESS(rc))
416	rc = rc2;
417	break;
418	}
419
420	case DragAndDropSvc::GUEST_DND_HG_EVT_PROGRESS:
421	{
422	DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA pCBData =
423	reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA>(pvParms);
424	AssertPtr(pCBData);
425	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGEVTPROGRESSDATA) == cbParms, VERR_INVALID_PARAMETER);
426	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_EVT_PROGRESS == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
427
428	rc = setProgress(pCBData->uPercentage, pCBData->uStatus, pCBData->rc);
429	if (RT_SUCCESS(rc))
430	rc = notifyAboutGuestResponse();
431	break;
432	}
433	#ifdef VBOX_WITH_DRAG_AND_DROP_GH
434	case DragAndDropSvc::GUEST_DND_GH_ACK_PENDING:
435	{
436	DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA pCBData =
437	reinterpret_cast<DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA>(pvParms);
438	AssertPtr(pCBData);
439	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBGHACKPENDINGDATA) == cbParms, VERR_INVALID_PARAMETER);
440	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_GH_ACK_PENDING == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
441
442	if ( pCBData->cbFormat == 0
443	\|\| pCBData->cbFormat > _64K /** @todo Make the maximum size configurable? */
444	\|\| pCBData->pszFormat == NULL)
445	{
446	rc = VERR_INVALID_PARAMETER;
447	}
448	else if (!RTStrIsValidEncoding(pCBData->pszFormat))
449	{
450	rc = VERR_INVALID_PARAMETER;
451	}
452	else
453	{
454	setFormats (GuestDnD::toFormatList(pCBData->pszFormat));
455	setActionDefault (pCBData->uDefAction);
456	setActionsAllowed(pCBData->uAllActions);
457
458	rc = VINF_SUCCESS;
459	}
460
461	int rc2 = notifyAboutGuestResponse();
462	if (RT_SUCCESS(rc))
463	rc = rc2;
464	break;
465	}
466	#endif /* VBOX_WITH_DRAG_AND_DROP_GH */
467	default:
468	/* * Try if the event is covered by a registered callback. */
469	fTryCallbacks = true;
470	break;
471	}
472
473	/*
474	* Try the host's installed callbacks (if any).
475	*/
476	if (fTryCallbacks)
477	{
478	GuestDnDCallbackMap::const_iterator it = m_mapCallbacks.find(u32Function);
479	if (it != m_mapCallbacks.end())
480	{
481	AssertPtr(it->second.pfnCallback);
482	rc = it->second.pfnCallback(u32Function, pvParms, cbParms, it->second.pvUser);
483	}
484	else
485	{
486	LogFlowFunc(("No callback for function %RU32 defined (%zu callbacks total)\n", u32Function, m_mapCallbacks.size()));
487	rc = VERR_NOT_SUPPORTED; /* Tell the guest. */
488	}
489	}
490
491	LogFlowFunc(("Returning rc=%Rrc\n", rc));
492	return rc;
493	}
494
495	HRESULT GuestDnDResponse::queryProgressTo(IProgress **ppProgress)
496	{
497	return m_pProgress.queryInterfaceTo(ppProgress);
498	}
499
500	int GuestDnDResponse::waitForGuestResponse(RTMSINTERVAL msTimeout /= 500 /) const
501	{
502	int rc = RTSemEventWait(m_EventSem, msTimeout);
503	#ifdef DEBUG_andy
504	LogFlowFunc(("msTimeout=%RU32, rc=%Rrc\n", msTimeout, rc));
505	#endif
506	return rc;
507	}
508
509	///////////////////////////////////////////////////////////////////////////////
510
511	GuestDnD* GuestDnD::s_pInstance = NULL;
512
513	GuestDnD::GuestDnD(const ComObjPtr<Guest> &pGuest)
514	: m_pGuest(pGuest)
515	{
516	LogFlowFuncEnter();
517
518	m_pResponse = new GuestDnDResponse(pGuest);
519
520	/* List of supported default MIME types. */
521	LogRel2(("DnD: Supported default host formats:\n"));
522	const com::Utf8Str arrEntries[] = { VBOX_DND_FORMATS_DEFAULT };
523	for (size_t i = 0; i < RT_ELEMENTS(arrEntries); i++)
524	{
525	m_strDefaultFormats.push_back(arrEntries[i]);
526	LogRel2(("DnD: \t%s\n", arrEntries[i].c_str()));
527	}
528	}
529
530	GuestDnD::~GuestDnD(void)
531	{
532	LogFlowFuncEnter();
533
534	if (m_pResponse)
535	delete m_pResponse;
536	}
537
538	HRESULT GuestDnD::adjustScreenCoordinates(ULONG uScreenId, ULONG puX, ULONG puY) const
539	{
540	/** @todo r=andy Save the current screen's shifting coordinates to speed things up.
541	* Only query for new offsets when the screen ID has changed. */
542
543	/* For multi-monitor support we need to add shift values to the coordinates
544	* (depending on the screen number). */
545	ComObjPtr<Console> pConsole = m_pGuest->i_getConsole();
546	ComPtr<IDisplay> pDisplay;
547	HRESULT hr = pConsole->COMGETTER(Display)(pDisplay.asOutParam());
548	if (FAILED(hr))
549	return hr;
550
551	ULONG dummy;
552	LONG xShift, yShift;
553	GuestMonitorStatus_T monitorStatus;
554	hr = pDisplay->GetScreenResolution(uScreenId, &dummy, &dummy, &dummy,
555	&xShift, &yShift, &monitorStatus);
556	if (FAILED(hr))
557	return hr;
558
559	if (puX)
560	*puX += xShift;
561	if (puY)
562	*puY += yShift;
563
564	LogFlowFunc(("uScreenId=%RU32, x=%RU32, y=%RU32\n", uScreenId, puX ? puX : 0, puY ? puY : 0));
565	return S_OK;
566	}
567
568	int GuestDnD::hostCall(uint32_t u32Function, uint32_t cParms, PVBOXHGCMSVCPARM paParms) const
569	{
570	Assert(!m_pGuest.isNull());
571	ComObjPtr<Console> pConsole = m_pGuest->i_getConsole();
572
573	/* Forward the information to the VMM device. */
574	Assert(!pConsole.isNull());
575	VMMDev *pVMMDev = pConsole->i_getVMMDev();
576	if (!pVMMDev)
577	return VERR_COM_OBJECT_NOT_FOUND;
578
579	return pVMMDev->hgcmHostCall("VBoxDragAndDropSvc", u32Function, cParms, paParms);
580	}
581
582	/* static */
583	DECLCALLBACK(int) GuestDnD::notifyDnDDispatcher(void *pvExtension, uint32_t u32Function,
584	void *pvParms, uint32_t cbParms)
585	{
586	LogFlowFunc(("pvExtension=%p, u32Function=%RU32, pvParms=%p, cbParms=%RU32\n",
587	pvExtension, u32Function, pvParms, cbParms));
588
589	GuestDnD pGuestDnD = reinterpret_cast<GuestDnD>(pvExtension);
590	AssertPtrReturn(pGuestDnD, VERR_INVALID_POINTER);
591
592	/** @todo In case we need to handle multiple guest DnD responses at a time this
593	* would be the place to lookup and dispatch to those. For the moment we
594	* only have one response -- simple. */
595	GuestDnDResponse *pResp = pGuestDnD->m_pResponse;
596	if (pResp)
597	return pResp->onDispatch(u32Function, pvParms, cbParms);
598
599	return VERR_NOT_SUPPORTED;
600	}
601
602	/* static */
603	bool GuestDnD::isFormatInFormatList(const com::Utf8Str &strFormat, const GuestDnDMIMEList &lstFormats)
604	{
605	return std::find(lstFormats.begin(), lstFormats.end(), strFormat) != lstFormats.end();
606	}
607
608	/* static */
609	GuestDnDMIMEList GuestDnD::toFormatList(const com::Utf8Str &strFormats)
610	{
611	GuestDnDMIMEList lstFormats;
612	RTCList<RTCString> lstFormatsTmp = strFormats.split("\r\n");
613
614	for (size_t i = 0; i < lstFormatsTmp.size(); i++)
615	lstFormats.push_back(com::Utf8Str(lstFormatsTmp.at(i)));
616
617	return lstFormats;
618	}
619
620	/* static */
621	com::Utf8Str GuestDnD::toFormatString(const GuestDnDMIMEList &lstFormats)
622	{
623	com::Utf8Str strFormat;
624	for (size_t i = 0; i < lstFormats.size(); i++)
625	{
626	const com::Utf8Str &f = lstFormats.at(i);
627	strFormat += f + "\r\n";
628	}
629
630	return strFormat;
631	}
632
633	/* static */
634	GuestDnDMIMEList GuestDnD::toFilteredFormatList(const GuestDnDMIMEList &lstFormatsSupported, const GuestDnDMIMEList &lstFormatsWanted)
635	{
636	GuestDnDMIMEList lstFormats;
637
638	for (size_t i = 0; i < lstFormatsWanted.size(); i++)
639	{
640	/* Only keep supported format types. */
641	if (std::find(lstFormatsSupported.begin(),
642	lstFormatsSupported.end(), lstFormatsWanted.at(i)) != lstFormatsSupported.end())
643	{
644	lstFormats.push_back(lstFormatsWanted[i]);
645	}
646	}
647
648	return lstFormats;
649	}
650
651	/* static */
652	GuestDnDMIMEList GuestDnD::toFilteredFormatList(const GuestDnDMIMEList &lstFormatsSupported, const com::Utf8Str &strFormatsWanted)
653	{
654	GuestDnDMIMEList lstFmt;
655
656	RTCList<RTCString> lstFormats = strFormatsWanted.split("\r\n");
657	size_t i = 0;
658	while (i < lstFormats.size())
659	{
660	/* Only keep allowed format types. */
661	if (std::find(lstFormatsSupported.begin(),
662	lstFormatsSupported.end(), lstFormats.at(i)) != lstFormatsSupported.end())
663	{
664	lstFmt.push_back(lstFormats[i]);
665	}
666	i++;
667	}
668
669	return lstFmt;
670	}
671
672	/* static */
673	VBOXDNDACTION GuestDnD::toHGCMAction(DnDAction_T enmAction)
674	{
675	VBOXDNDACTION dndAction = VBOX_DND_ACTION_IGNORE;
676	switch (enmAction)
677	{
678	case DnDAction_Copy:
679	dndAction = VBOX_DND_ACTION_COPY;
680	break;
681	case DnDAction_Move:
682	dndAction = VBOX_DND_ACTION_MOVE;
683	break;
684	case DnDAction_Link:
685	/* For now it doesn't seems useful to allow a link
686	action between host & guest. Later? */
687	case DnDAction_Ignore:
688	/* Ignored. */
689	break;
690	default:
691	AssertMsgFailed(("Action %RU32 not recognized!\n", enmAction));
692	break;
693	}
694
695	return dndAction;
696	}
697
698	/* static */
699	void GuestDnD::toHGCMActions(DnDAction_T enmDnDActionDefault,
700	VBOXDNDACTION *pDnDActionDefault,
701	const std::vector<DnDAction_T> vecDnDActionsAllowed,
702	VBOXDNDACTIONLIST *pDnDLstActionsAllowed)
703	{
704	VBOXDNDACTIONLIST dndLstActionsAllowed = VBOX_DND_ACTION_IGNORE;
705	VBOXDNDACTION dndActionDefault = toHGCMAction(enmDnDActionDefault);
706
707	if (!vecDnDActionsAllowed.empty())
708	{
709	/* First convert the allowed actions to a bit array. */
710	for (size_t i = 0; i < vecDnDActionsAllowed.size(); i++)
711	dndLstActionsAllowed \|= toHGCMAction(vecDnDActionsAllowed[i]);
712
713	/*
714	* If no default action is set (ignoring), try one of the
715	* set allowed actions, preferring copy, move (in that order).
716	*/
717	if (isDnDIgnoreAction(dndActionDefault))
718	{
719	if (hasDnDCopyAction(dndLstActionsAllowed))
720	dndActionDefault = VBOX_DND_ACTION_COPY;
721	else if (hasDnDMoveAction(dndLstActionsAllowed))
722	dndActionDefault = VBOX_DND_ACTION_MOVE;
723	}
724	}
725
726	if (pDnDActionDefault)
727	*pDnDActionDefault = dndActionDefault;
728	if (pDnDLstActionsAllowed)
729	*pDnDLstActionsAllowed = dndLstActionsAllowed;
730	}
731
732	/* static */
733	DnDAction_T GuestDnD::toMainAction(VBOXDNDACTION dndAction)
734	{
735	/* For now it doesn't seems useful to allow a
736	* link action between host & guest. Maybe later! */
737	return isDnDCopyAction(dndAction) ? DnDAction_Copy
738	: isDnDMoveAction(dndAction) ? DnDAction_Move
739	: DnDAction_Ignore;
740	}
741
742	/* static */
743	std::vector<DnDAction_T> GuestDnD::toMainActions(VBOXDNDACTIONLIST dndActionList)
744	{
745	std::vector<DnDAction_T> vecActions;
746
747	/* For now it doesn't seems useful to allow a
748	* link action between host & guest. Maybe later! */
749	RTCList<DnDAction_T> lstActions;
750	if (hasDnDCopyAction(dndActionList))
751	lstActions.append(DnDAction_Copy);
752	if (hasDnDMoveAction(dndActionList))
753	lstActions.append(DnDAction_Move);
754
755	for (size_t i = 0; i < lstActions.size(); ++i)
756	vecActions.push_back(lstActions.at(i));
757
758	return vecActions;
759	}
760
761	///////////////////////////////////////////////////////////////////////////////
762
763	GuestDnDBase::GuestDnDBase(void)
764	{
765	/* Initialize public attributes. */
766	m_lstFmtSupported = GuestDnDInst()->defaultFormats();
767
768	/* Initialzie private stuff. */
769	mDataBase.m_cTransfersPending = 0;
770	mDataBase.m_uProtocolVersion = 0;
771	}
772
773	HRESULT GuestDnDBase::i_isFormatSupported(const com::Utf8Str &aFormat, BOOL *aSupported)
774	{
775	*aSupported = std::find(m_lstFmtSupported.begin(),
776	m_lstFmtSupported.end(), aFormat) != m_lstFmtSupported.end()
777	? TRUE : FALSE;
778	return S_OK;
779	}
780
781	HRESULT GuestDnDBase::i_getFormats(GuestDnDMIMEList &aFormats)
782	{
783	aFormats = m_lstFmtSupported;
784
785	return S_OK;
786	}
787
788	HRESULT GuestDnDBase::i_addFormats(const GuestDnDMIMEList &aFormats)
789	{
790	for (size_t i = 0; i < aFormats.size(); ++i)
791	{
792	Utf8Str strFormat = aFormats.at(i);
793	if (std::find(m_lstFmtSupported.begin(),
794	m_lstFmtSupported.end(), strFormat) == m_lstFmtSupported.end())
795	{
796	m_lstFmtSupported.push_back(strFormat);
797	}
798	}
799
800	return S_OK;
801	}
802
803	HRESULT GuestDnDBase::i_removeFormats(const GuestDnDMIMEList &aFormats)
804	{
805	for (size_t i = 0; i < aFormats.size(); ++i)
806	{
807	Utf8Str strFormat = aFormats.at(i);
808	GuestDnDMIMEList::iterator itFormat = std::find(m_lstFmtSupported.begin(),
809	m_lstFmtSupported.end(), strFormat);
810	if (itFormat != m_lstFmtSupported.end())
811	m_lstFmtSupported.erase(itFormat);
812	}
813
814	return S_OK;
815	}
816
817	HRESULT GuestDnDBase::i_getProtocolVersion(ULONG *puVersion)
818	{
819	int rc = getProtocolVersion((uint32_t *)puVersion);
820	return RT_SUCCESS(rc) ? S_OK : E_FAIL;
821	}
822
823	/**
824	* Tries to guess the DnD protocol version to use on the guest, based on the
825	* installed Guest Additions version + revision.
826	*
827	* If unable to retrieve the protocol version, VERR_NOT_FOUND is returned along
828	* with protocol version 1.
829	*
830	* @return IPRT status code.
831	* @param puProto Where to store the protocol version.
832	*/
833	int GuestDnDBase::getProtocolVersion(uint32_t *puProto)
834	{
835	AssertPtrReturn(puProto, VERR_INVALID_POINTER);
836
837	int rc;
838
839	uint32_t uProto = 0;
840	uint32_t uVerAdditions;
841	uint32_t uRevAdditions;
842	if ( m_pGuest
843	&& (uVerAdditions = m_pGuest->i_getAdditionsVersion()) > 0
844	&& (uRevAdditions = m_pGuest->i_getAdditionsRevision()) > 0)
845	{
846	#if 0 && defined(DEBUG)
847	/* Hardcode the to-used protocol version; nice for testing side effects. */
848	if (true)
849	uProto = 3;
850	else
851	#endif
852	if (uVerAdditions >= VBOX_FULL_VERSION_MAKE(5, 0, 0))
853	{
854	/** @todo
855	* r=bird: This is just too bad for anyone using an OSE additions build...
856	*/
857	if (uRevAdditions >= 103344) /* Since r103344: Protocol v3. */
858	uProto = 3;
859	else
860	uProto = 2; /* VBox 5.0.0 - 5.0.8: Protocol v2. */
861	}
862	/* else: uProto: 0 */
863
864	LogFlowFunc(("uVerAdditions=%RU32 (%RU32.%RU32.%RU32), r%RU32\n",
865	uVerAdditions, VBOX_FULL_VERSION_GET_MAJOR(uVerAdditions), VBOX_FULL_VERSION_GET_MINOR(uVerAdditions),
866	VBOX_FULL_VERSION_GET_BUILD(uVerAdditions), uRevAdditions));
867	rc = VINF_SUCCESS;
868	}
869	else
870	{
871	uProto = 1; /* Fallback. */
872	rc = VERR_NOT_FOUND;
873	}
874
875	LogRel2(("DnD: Guest is using protocol v%RU32, rc=%Rrc\n", uProto, rc));
876
877	*puProto = uProto;
878	return rc;
879	}
880
881	int GuestDnDBase::msgQueueAdd(GuestDnDMsg *pMsg)
882	{
883	mDataBase.m_lstMsgOut.push_back(pMsg);
884	return VINF_SUCCESS;
885	}
886
887	GuestDnDMsg *GuestDnDBase::msgQueueGetNext(void)
888	{
889	if (mDataBase.m_lstMsgOut.empty())
890	return NULL;
891	return mDataBase.m_lstMsgOut.front();
892	}
893
894	void GuestDnDBase::msgQueueRemoveNext(void)
895	{
896	if (!mDataBase.m_lstMsgOut.empty())
897	{
898	GuestDnDMsg *pMsg = mDataBase.m_lstMsgOut.front();
899	if (pMsg)
900	delete pMsg;
901	mDataBase.m_lstMsgOut.pop_front();
902	}
903	}
904
905	void GuestDnDBase::msgQueueClear(void)
906	{
907	LogFlowFunc(("cMsg=%zu\n", mDataBase.m_lstMsgOut.size()));
908
909	GuestDnDMsgList::iterator itMsg = mDataBase.m_lstMsgOut.begin();
910	while (itMsg != mDataBase.m_lstMsgOut.end())
911	{
912	GuestDnDMsg pMsg = itMsg;
913	if (pMsg)
914	delete pMsg;
915
916	itMsg++;
917	}
918
919	mDataBase.m_lstMsgOut.clear();
920	}
921
922	int GuestDnDBase::sendCancel(void)
923	{
924	GuestDnDMsg Msg;
925	Msg.setType(HOST_DND_CANCEL);
926	if (mDataBase.m_uProtocolVersion >= 3)
927	Msg.setNextUInt32(0); /** @todo ContextID not used yet. */
928
929	LogRel2(("DnD: Cancelling operation on guest ..."));
930
931	return GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
932	}
933
934	int GuestDnDBase::updateProgress(GuestDnDData pData, GuestDnDResponse pResp,
935	uint32_t cbDataAdd /* = 0 */)
936	{
937	AssertPtrReturn(pData, VERR_INVALID_POINTER);
938	AssertPtrReturn(pResp, VERR_INVALID_POINTER);
939	/* cbDataAdd is optional. */
940
941	LogFlowFunc(("cbTotal=%RU64, cbProcessed=%RU64, cbRemaining=%RU64, cbDataAdd=%RU32\n",
942	pData->getTotal(), pData->getProcessed(), pData->getRemaining(), cbDataAdd));
943
944	if (!pResp)
945	return VINF_SUCCESS;
946
947	if (cbDataAdd)
948	pData->addProcessed(cbDataAdd);
949
950	int rc = pResp->setProgress(pData->getPercentComplete(),
951	pData->isComplete()
952	? DND_PROGRESS_COMPLETE
953	: DND_PROGRESS_RUNNING);
954	LogFlowFuncLeaveRC(rc);
955	return rc;
956	}
957
958	/** @todo GuestDnDResponse pResp needs to go. /
959	int GuestDnDBase::waitForEvent(GuestDnDCallbackEvent pEvent, GuestDnDResponse pResp, RTMSINTERVAL msTimeout)
960	{
961	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
962	AssertPtrReturn(pResp, VERR_INVALID_POINTER);
963
964	int rc;
965
966	LogFlowFunc(("msTimeout=%RU32\n", msTimeout));
967
968	uint64_t tsStart = RTTimeMilliTS();
969	do
970	{
971	/*
972	* Wait until our desired callback triggered the
973	* wait event. As we don't want to block if the guest does not
974	* respond, do busy waiting here.
975	*/
976	rc = pEvent->Wait(500 /* ms */);
977	if (RT_SUCCESS(rc))
978	{
979	rc = pEvent->Result();
980	LogFlowFunc(("Callback done, result is %Rrc\n", rc));
981	break;
982	}
983	else if (rc == VERR_TIMEOUT) /* Continue waiting. */
984	rc = VINF_SUCCESS;
985
986	if ( msTimeout != RT_INDEFINITE_WAIT
987	&& RTTimeMilliTS() - tsStart > msTimeout)
988	{
989	rc = VERR_TIMEOUT;
990	LogRel2(("DnD: Error: Guest did not respond within time\n"));
991	}
992	else if (pResp->isProgressCanceled()) /** @todo GuestDnDResponse pResp needs to go. /
993	{
994	LogRel2(("DnD: Operation was canceled by user\n"));
995	rc = VERR_CANCELLED;
996	}
997
998	} while (RT_SUCCESS(rc));
999
1000	LogFlowFuncLeaveRC(rc);
1001	return rc;
1002	}
1003	#endif /* VBOX_WITH_DRAG_AND_DROP */
1004

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source: vbox/trunk/src/VBox/Main/src-client/GuestDnDPrivate.cpp@ 77924

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