GuestDnDPrivate.cpp@ 64093

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1	/* $Id: GuestDnDPrivate.cpp 63259 2016-08-10 12:37:42Z vboxsync $ */
2	/** @file
3	* Private guest drag and drop code, used by GuestDnDTarget +
4	* GuestDnDSource.
5	*/
6
7	/*
8	* Copyright (C) 2011-2016 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19	#include "GuestImpl.h"
20	#include "AutoCaller.h"
21
22	#ifdef VBOX_WITH_DRAG_AND_DROP
23	# include "ConsoleImpl.h"
24	# include "ProgressImpl.h"
25	# include "GuestDnDPrivate.h"
26
27	# include <algorithm>
28
29	# include <iprt/dir.h>
30	# include <iprt/path.h>
31	# include <iprt/stream.h>
32	# include <iprt/semaphore.h>
33	# include <iprt/cpp/utils.h>
34
35	# include <VMMDev.h>
36
37	# include <VBox/GuestHost/DragAndDrop.h>
38	# include <VBox/HostServices/DragAndDropSvc.h>
39	# include <VBox/version.h>
40
41	# ifdef LOG_GROUP
42	# undef LOG_GROUP
43	# endif
44	# define LOG_GROUP LOG_GROUP_GUEST_DND
45	# include <VBox/log.h>
46
47	/**
48	* Overview:
49	*
50	* Drag and Drop is handled over the internal HGCM service for the host <->
51	* guest communication. Beside that we need to map the Drag and Drop protocols
52	* of the various OS's we support to our internal channels, this is also highly
53	* communicative in both directions. Unfortunately HGCM isn't really designed
54	* for that. Next we have to foul some of the components. This includes to
55	* trick X11 on the guest side, but also Qt needs to be tricked on the host
56	* side a little bit.
57	*
58	* The following components are involved:
59	*
60	* 1. GUI: Uses the Qt classes for Drag and Drop and mainly forward the content
61	* of it to the Main IGuest interface (see UIDnDHandler.cpp).
62	* 2. Main: Public interface for doing Drag and Drop. Also manage the IProgress
63	* interfaces for blocking the caller by showing a progress dialog (see
64	* this file).
65	* 3. HGCM service: Handle all messages from the host to the guest at once and
66	* encapsulate the internal communication details (see dndmanager.cpp and
67	* friends).
68	* 4. Guest additions: Split into the platform neutral part (see
69	* VBoxGuestR3LibDragAndDrop.cpp) and the guest OS specific parts.
70	* Receive/send message from/to the HGCM service and does all guest specific
71	* operations. Currently only X11 is supported (see draganddrop.cpp within
72	* VBoxClient).
73	*
74	* Host -> Guest:
75	* 1. There are DnD Enter, Move, Leave events which are send exactly like this
76	* to the guest. The info includes the pos, mimetypes and allowed actions.
77	* The guest has to respond with an action it would accept, so the GUI could
78	* change the cursor.
79	* 2. On drop, first a drop event is sent. If this is accepted a drop data
80	* event follows. This blocks the GUI and shows some progress indicator.
81	*
82	* Guest -> Host:
83	* 1. The GUI is asking the guest if a DnD event is pending when the user moves
84	* the cursor out of the view window. If so, this returns the mimetypes and
85	* allowed actions.
86	* (2. On every mouse move this is asked again, to make sure the DnD event is
87	* still valid.)
88	* 3. On drop the host request the data from the guest. This blocks the GUI and
89	* shows some progress indicator.
90	*
91	* Some hints:
92	* m_strSupportedFormats here in this file defines the allowed mime-types.
93	* This is necessary because we need special handling for some of the
94	* mime-types. E.g. for URI lists we need to transfer the actual dirs and
95	* files. Text EOL may to be changed. Also unknown mime-types may need special
96	* handling as well, which may lead to undefined behavior in the host/guest, if
97	* not done.
98	*
99	* Dropping of a directory, means recursively transferring _all_ the content.
100	*
101	* Directories and files are placed into the user's temporary directory on the
102	* guest (e.g. /tmp/VirtualBox Dropped Files). We can't delete them after the
103	* DnD operation, because we didn't know what the DnD target does with it. E.g.
104	* it could just be opened in place. This could lead ofc to filling up the disk
105	* within the guest. To inform the user about this, a small app could be
106	* developed which scans this directory regularly and inform the user with a
107	* tray icon hint (and maybe the possibility to clean this up instantly). The
108	* same has to be done in the G->H direction when it is implemented.
109	*
110	* Of course only regularly files are supported. Symlinks are resolved and
111	* transfered as regularly files. First we don't know if the other side support
112	* symlinks at all and second they could point to somewhere in a directory tree
113	* which not exists on the other side.
114	*
115	* The code tries to preserve the file modes of the transfered dirs/files. This
116	* is useful (and maybe necessary) for two things:
117	* 1. If a file is executable, it should be also after the transfer, so the
118	* user can just execute it, without manually tweaking the modes first.
119	* 2. If a dir/file is not accessible by group/others in the host, it shouldn't
120	* be in the guest.
121	* In any case, the user mode is always set to rwx (so that we can access it
122	* ourself, in e.g. for a cleanup case after cancel).
123	*
124	* Cancel is supported in both directions and cleans up all previous steps
125	* (thats is: deleting already transfered dirs/files).
126	*
127	* In general I propose the following changes in the VBox HGCM infrastructure
128	* for the future:
129	* - Currently it isn't really possible to send messages to the guest from the
130	* host. The host informs the guest just that there is something, the guest
131	* than has to ask which message and depending on that send the appropriate
132	* message to the host, which is filled with the right data.
133	* - There is no generic interface for sending bigger memory blocks to/from the
134	* guest. This is now done here, but I guess was also necessary for e.g.
135	* guest execution. So something generic which brake this up into smaller
136	* blocks and send it would be nice (with all the error handling and such
137	* ofc).
138	* - I developed a "protocol" for the DnD communication here. So the host and
139	* the guest have always to match in the revision. This is ofc bad, because
140	* the additions could be outdated easily. So some generic protocol number
141	* support in HGCM for asking the host and the guest of the support version,
142	* would be nice. Ofc at least the host should be able to talk to the guest,
143	* even when the version is below the host one.
144	* All this stuff would be useful for the current services, but also for future
145	* onces.
146	*
147	** @todo
148	* - ESC doesn't really work (on Windows guests it's already implemented)
149	* ... in any case it seems a little bit difficult to handle from the Qt
150	* side. Maybe also a host specific implementation becomes necessary ...
151	* this would be really worst ofc.
152	* - Add support for more mime-types (especially images, csv)
153	* - Test unusual behavior:
154	* - DnD service crash in the guest during a DnD op (e.g. crash of VBoxClient or X11)
155	* - Not expected order of the events between HGCM and the guest
156	* - Security considerations: We transfer a lot of memory between the guest and
157	* the host and even allow the creation of dirs/files. Maybe there should be
158	* limits introduced to preventing DOS attacks or filling up all the memory
159	* (both in the host and the guest).
160	*/
161
162	GuestDnDCallbackEvent::~GuestDnDCallbackEvent(void)
163	{
164	if (NIL_RTSEMEVENT != mSemEvent)
165	RTSemEventDestroy(mSemEvent);
166	}
167
168	int GuestDnDCallbackEvent::Reset(void)
169	{
170	int rc = VINF_SUCCESS;
171
172	if (NIL_RTSEMEVENT == mSemEvent)
173	rc = RTSemEventCreate(&mSemEvent);
174
175	mRc = VINF_SUCCESS;
176	return rc;
177	}
178
179	int GuestDnDCallbackEvent::Notify(int rc /* = VINF_SUCCESS */)
180	{
181	mRc = rc;
182	return RTSemEventSignal(mSemEvent);
183	}
184
185	int GuestDnDCallbackEvent::Wait(RTMSINTERVAL msTimeout)
186	{
187	return RTSemEventWait(mSemEvent, msTimeout);
188	}
189
190	///////////////////////////////////////////////////////////////////////////////
191
192	GuestDnDResponse::GuestDnDResponse(const ComObjPtr<Guest>& pGuest)
193	: m_EventSem(NIL_RTSEMEVENT)
194	, m_defAction(0)
195	, m_allActions(0)
196	, m_pParent(pGuest)
197	{
198	int rc = RTSemEventCreate(&m_EventSem);
199	if (RT_FAILURE(rc))
200	throw rc;
201	}
202
203	GuestDnDResponse::~GuestDnDResponse(void)
204	{
205	reset();
206
207	int rc = RTSemEventDestroy(m_EventSem);
208	AssertRC(rc);
209	}
210
211	int GuestDnDResponse::notifyAboutGuestResponse(void) const
212	{
213	return RTSemEventSignal(m_EventSem);
214	}
215
216	void GuestDnDResponse::reset(void)
217	{
218	LogFlowThisFuncEnter();
219
220	m_defAction = 0;
221	m_allActions = 0;
222
223	m_lstFormats.clear();
224	}
225
226	HRESULT GuestDnDResponse::resetProgress(const ComObjPtr<Guest>& pParent)
227	{
228	m_pProgress.setNull();
229
230	HRESULT hr = m_pProgress.createObject();
231	if (SUCCEEDED(hr))
232	{
233	hr = m_pProgress->init(static_cast<IGuest *>(pParent),
234	Bstr(pParent->tr("Dropping data")).raw(),
235	TRUE /* aCancelable */);
236	}
237
238	return hr;
239	}
240
241	bool GuestDnDResponse::isProgressCanceled(void) const
242	{
243	BOOL fCanceled;
244	if (!m_pProgress.isNull())
245	{
246	HRESULT hr = m_pProgress->COMGETTER(Canceled)(&fCanceled);
247	AssertComRC(hr);
248	}
249	else
250	fCanceled = TRUE;
251
252	return RT_BOOL(fCanceled);
253	}
254
255	int GuestDnDResponse::setCallback(uint32_t uMsg, PFNGUESTDNDCALLBACK pfnCallback, void pvUser / = NULL */)
256	{
257	GuestDnDCallbackMap::iterator it = m_mapCallbacks.find(uMsg);
258
259	/* Add. */
260	if (pfnCallback)
261	{
262	if (it == m_mapCallbacks.end())
263	{
264	m_mapCallbacks[uMsg] = GuestDnDCallback(pfnCallback, uMsg, pvUser);
265	return VINF_SUCCESS;
266	}
267
268	AssertMsgFailed(("Callback for message %RU32 already registered\n", uMsg));
269	return VERR_ALREADY_EXISTS;
270	}
271
272	/* Remove. */
273	if (it != m_mapCallbacks.end())
274	m_mapCallbacks.erase(it);
275
276	return VINF_SUCCESS;
277	}
278
279	int GuestDnDResponse::setProgress(unsigned uPercentage,
280	uint32_t uStatus,
281	int rcOp /* = VINF_SUCCESS /, const Utf8Str &strMsg / = "" */)
282	{
283	RT_NOREF(rcOp);
284	LogFlowFunc(("uStatus=%RU32, uPercentage=%RU32, rcOp=%Rrc, strMsg=%s\n",
285	uStatus, uPercentage, rcOp, strMsg.c_str()));
286
287	int rc = VINF_SUCCESS;
288	if (!m_pProgress.isNull())
289	{
290	BOOL fCompleted;
291	HRESULT hr = m_pProgress->COMGETTER(Completed)(&fCompleted);
292	AssertComRC(hr);
293
294	BOOL fCanceled;
295	hr = m_pProgress->COMGETTER(Canceled)(&fCanceled);
296	AssertComRC(hr);
297
298	LogFlowFunc(("Current: fCompleted=%RTbool, fCanceled=%RTbool\n", fCompleted, fCanceled));
299
300	if (!fCompleted)
301	{
302	switch (uStatus)
303	{
304	case DragAndDropSvc::DND_PROGRESS_ERROR:
305	{
306	hr = m_pProgress->i_notifyComplete(VBOX_E_IPRT_ERROR,
307	COM_IIDOF(IGuest),
308	m_pParent->getComponentName(), strMsg.c_str());
309	reset();
310	break;
311	}
312
313	case DragAndDropSvc::DND_PROGRESS_CANCELLED:
314	{
315	hr = m_pProgress->Cancel();
316	AssertComRC(hr);
317	hr = m_pProgress->i_notifyComplete(S_OK);
318	AssertComRC(hr);
319
320	reset();
321	break;
322	}
323
324	case DragAndDropSvc::DND_PROGRESS_RUNNING:
325	case DragAndDropSvc::DND_PROGRESS_COMPLETE:
326	{
327	if (!fCanceled)
328	{
329	hr = m_pProgress->SetCurrentOperationProgress(uPercentage);
330	AssertComRC(hr);
331	if ( uStatus == DragAndDropSvc::DND_PROGRESS_COMPLETE
332	\|\| uPercentage >= 100)
333	{
334	hr = m_pProgress->i_notifyComplete(S_OK);
335	AssertComRC(hr);
336	}
337	}
338	break;
339	}
340
341	default:
342	break;
343	}
344	}
345
346	hr = m_pProgress->COMGETTER(Completed)(&fCompleted);
347	AssertComRC(hr);
348	hr = m_pProgress->COMGETTER(Canceled)(&fCanceled);
349	AssertComRC(hr);
350
351	LogFlowFunc(("New: fCompleted=%RTbool, fCanceled=%RTbool\n", fCompleted, fCanceled));
352	}
353
354	LogFlowFuncLeaveRC(rc);
355	return rc;
356	}
357
358	int GuestDnDResponse::onDispatch(uint32_t u32Function, void *pvParms, uint32_t cbParms)
359	{
360	LogFlowFunc(("u32Function=%RU32, pvParms=%p, cbParms=%RU32\n", u32Function, pvParms, cbParms));
361
362	int rc = VERR_WRONG_ORDER; /* Play safe. */
363	bool fTryCallbacks = false;
364
365	switch (u32Function)
366	{
367	case DragAndDropSvc::GUEST_DND_CONNECT:
368	{
369	LogThisFunc(("Client connected\n"));
370
371	/* Nothing to do here (yet). */
372	rc = VINF_SUCCESS;
373	break;
374	}
375
376	case DragAndDropSvc::GUEST_DND_DISCONNECT:
377	{
378	LogThisFunc(("Client disconnected\n"));
379	rc = setProgress(100, DND_PROGRESS_CANCELLED, VINF_SUCCESS);
380	break;
381	}
382
383	case DragAndDropSvc::GUEST_DND_HG_ACK_OP:
384	{
385	DragAndDropSvc::PVBOXDNDCBHGACKOPDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGACKOPDATA>(pvParms);
386	AssertPtr(pCBData);
387	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGACKOPDATA) == cbParms, VERR_INVALID_PARAMETER);
388	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_ACK_OP == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
389
390	setDefAction(pCBData->uAction);
391	rc = notifyAboutGuestResponse();
392	break;
393	}
394
395	case DragAndDropSvc::GUEST_DND_HG_REQ_DATA:
396	{
397	DragAndDropSvc::PVBOXDNDCBHGREQDATADATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGREQDATADATA>(pvParms);
398	AssertPtr(pCBData);
399	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGREQDATADATA) == cbParms, VERR_INVALID_PARAMETER);
400	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_REQ_DATA == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
401
402	if ( pCBData->cbFormat == 0
403	\|\| pCBData->cbFormat > _64K /** @todo Make this configurable? */
404	\|\| pCBData->pszFormat == NULL)
405	{
406	rc = VERR_INVALID_PARAMETER;
407	}
408	else if (!RTStrIsValidEncoding(pCBData->pszFormat))
409	{
410	rc = VERR_INVALID_PARAMETER;
411	}
412	else
413	{
414	setFormats(GuestDnD::toFormatList(pCBData->pszFormat));
415	rc = VINF_SUCCESS;
416	}
417
418	int rc2 = notifyAboutGuestResponse();
419	if (RT_SUCCESS(rc))
420	rc = rc2;
421	break;
422	}
423
424	case DragAndDropSvc::GUEST_DND_HG_EVT_PROGRESS:
425	{
426	DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA pCBData =
427	reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA>(pvParms);
428	AssertPtr(pCBData);
429	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGEVTPROGRESSDATA) == cbParms, VERR_INVALID_PARAMETER);
430	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_EVT_PROGRESS == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
431
432	rc = setProgress(pCBData->uPercentage, pCBData->uStatus, pCBData->rc);
433	if (RT_SUCCESS(rc))
434	rc = notifyAboutGuestResponse();
435	break;
436	}
437	#ifdef VBOX_WITH_DRAG_AND_DROP_GH
438	case DragAndDropSvc::GUEST_DND_GH_ACK_PENDING:
439	{
440	DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA pCBData =
441	reinterpret_cast<DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA>(pvParms);
442	AssertPtr(pCBData);
443	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBGHACKPENDINGDATA) == cbParms, VERR_INVALID_PARAMETER);
444	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_GH_ACK_PENDING == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
445
446	if ( pCBData->cbFormat == 0
447	\|\| pCBData->cbFormat > _64K /** @todo Make the maximum size configurable? */
448	\|\| pCBData->pszFormat == NULL)
449	{
450	rc = VERR_INVALID_PARAMETER;
451	}
452	else if (!RTStrIsValidEncoding(pCBData->pszFormat))
453	{
454	rc = VERR_INVALID_PARAMETER;
455	}
456	else
457	{
458	setFormats (GuestDnD::toFormatList(pCBData->pszFormat));
459	setDefAction (pCBData->uDefAction);
460	setAllActions(pCBData->uAllActions);
461
462	rc = VINF_SUCCESS;
463	}
464
465	int rc2 = notifyAboutGuestResponse();
466	if (RT_SUCCESS(rc))
467	rc = rc2;
468	break;
469	}
470	#endif /* VBOX_WITH_DRAG_AND_DROP_GH */
471	default:
472	/* * Try if the event is covered by a registered callback. */
473	fTryCallbacks = true;
474	break;
475	}
476
477	/*
478	* Try the host's installed callbacks (if any).
479	*/
480	if (fTryCallbacks)
481	{
482	GuestDnDCallbackMap::const_iterator it = m_mapCallbacks.find(u32Function);
483	if (it != m_mapCallbacks.end())
484	{
485	AssertPtr(it->second.pfnCallback);
486	rc = it->second.pfnCallback(u32Function, pvParms, cbParms, it->second.pvUser);
487	}
488	else
489	{
490	LogFlowFunc(("No callback for function %RU32 defined (%zu callbacks total)\n", u32Function, m_mapCallbacks.size()));
491	rc = VERR_NOT_SUPPORTED; /* Tell the guest. */
492	}
493	}
494
495	LogFlowFunc(("Returning rc=%Rrc\n", rc));
496	return rc;
497	}
498
499	HRESULT GuestDnDResponse::queryProgressTo(IProgress **ppProgress)
500	{
501	return m_pProgress.queryInterfaceTo(ppProgress);
502	}
503
504	int GuestDnDResponse::waitForGuestResponse(RTMSINTERVAL msTimeout /= 500 /) const
505	{
506	int rc = RTSemEventWait(m_EventSem, msTimeout);
507	#ifdef DEBUG_andy
508	LogFlowFunc(("msTimeout=%RU32, rc=%Rrc\n", msTimeout, rc));
509	#endif
510	return rc;
511	}
512
513	///////////////////////////////////////////////////////////////////////////////
514
515	GuestDnD* GuestDnD::s_pInstance = NULL;
516
517	GuestDnD::GuestDnD(const ComObjPtr<Guest> &pGuest)
518	: m_pGuest(pGuest)
519	{
520	LogFlowFuncEnter();
521
522	m_pResponse = new GuestDnDResponse(pGuest);
523
524	/* List of supported default MIME types. */
525	LogRel2(("DnD: Supported default host formats:\n"));
526	const com::Utf8Str arrEntries[] = { VBOX_DND_FORMATS_DEFAULT };
527	for (size_t i = 0; i < RT_ELEMENTS(arrEntries); i++)
528	{
529	m_strDefaultFormats.push_back(arrEntries[i]);
530	LogRel2(("DnD: \t%s\n", arrEntries[i].c_str()));
531	}
532	}
533
534	GuestDnD::~GuestDnD(void)
535	{
536	LogFlowFuncEnter();
537
538	if (m_pResponse)
539	delete m_pResponse;
540	}
541
542	HRESULT GuestDnD::adjustScreenCoordinates(ULONG uScreenId, ULONG puX, ULONG puY) const
543	{
544	/** @todo r=andy Save the current screen's shifting coordinates to speed things up.
545	* Only query for new offsets when the screen ID has changed. */
546
547	/* For multi-monitor support we need to add shift values to the coordinates
548	* (depending on the screen number). */
549	ComObjPtr<Console> pConsole = m_pGuest->i_getConsole();
550	ComPtr<IDisplay> pDisplay;
551	HRESULT hr = pConsole->COMGETTER(Display)(pDisplay.asOutParam());
552	if (FAILED(hr))
553	return hr;
554
555	ULONG dummy;
556	LONG xShift, yShift;
557	GuestMonitorStatus_T monitorStatus;
558	hr = pDisplay->GetScreenResolution(uScreenId, &dummy, &dummy, &dummy,
559	&xShift, &yShift, &monitorStatus);
560	if (FAILED(hr))
561	return hr;
562
563	if (puX)
564	*puX += xShift;
565	if (puY)
566	*puY += yShift;
567
568	LogFlowFunc(("uScreenId=%RU32, x=%RU32, y=%RU32\n", uScreenId, puX ? puX : 0, puY ? puY : 0));
569	return S_OK;
570	}
571
572	int GuestDnD::hostCall(uint32_t u32Function, uint32_t cParms, PVBOXHGCMSVCPARM paParms) const
573	{
574	Assert(!m_pGuest.isNull());
575	ComObjPtr<Console> pConsole = m_pGuest->i_getConsole();
576
577	/* Forward the information to the VMM device. */
578	Assert(!pConsole.isNull());
579	VMMDev *pVMMDev = pConsole->i_getVMMDev();
580	if (!pVMMDev)
581	return VERR_COM_OBJECT_NOT_FOUND;
582
583	return pVMMDev->hgcmHostCall("VBoxDragAndDropSvc", u32Function, cParms, paParms);
584	}
585
586	/* static */
587	DECLCALLBACK(int) GuestDnD::notifyDnDDispatcher(void *pvExtension, uint32_t u32Function,
588	void *pvParms, uint32_t cbParms)
589	{
590	LogFlowFunc(("pvExtension=%p, u32Function=%RU32, pvParms=%p, cbParms=%RU32\n",
591	pvExtension, u32Function, pvParms, cbParms));
592
593	GuestDnD pGuestDnD = reinterpret_cast<GuestDnD>(pvExtension);
594	AssertPtrReturn(pGuestDnD, VERR_INVALID_POINTER);
595
596	/** @todo In case we need to handle multiple guest DnD responses at a time this
597	* would be the place to lookup and dispatch to those. For the moment we
598	* only have one response -- simple. */
599	GuestDnDResponse *pResp = pGuestDnD->m_pResponse;
600	if (pResp)
601	return pResp->onDispatch(u32Function, pvParms, cbParms);
602
603	return VERR_NOT_SUPPORTED;
604	}
605
606	/* static */
607	bool GuestDnD::isFormatInFormatList(const com::Utf8Str &strFormat, const GuestDnDMIMEList &lstFormats)
608	{
609	return std::find(lstFormats.begin(), lstFormats.end(), strFormat) != lstFormats.end();
610	}
611
612	/* static */
613	GuestDnDMIMEList GuestDnD::toFormatList(const com::Utf8Str &strFormats)
614	{
615	GuestDnDMIMEList lstFormats;
616	RTCList<RTCString> lstFormatsTmp = strFormats.split("\r\n");
617
618	for (size_t i = 0; i < lstFormatsTmp.size(); i++)
619	lstFormats.push_back(com::Utf8Str(lstFormatsTmp.at(i)));
620
621	return lstFormats;
622	}
623
624	/* static */
625	com::Utf8Str GuestDnD::toFormatString(const GuestDnDMIMEList &lstFormats)
626	{
627	com::Utf8Str strFormat;
628	for (size_t i = 0; i < lstFormats.size(); i++)
629	{
630	const com::Utf8Str &f = lstFormats.at(i);
631	strFormat += f + "\r\n";
632	}
633
634	return strFormat;
635	}
636
637	/* static */
638	GuestDnDMIMEList GuestDnD::toFilteredFormatList(const GuestDnDMIMEList &lstFormatsSupported, const GuestDnDMIMEList &lstFormatsWanted)
639	{
640	GuestDnDMIMEList lstFormats;
641
642	for (size_t i = 0; i < lstFormatsWanted.size(); i++)
643	{
644	/* Only keep supported format types. */
645	if (std::find(lstFormatsSupported.begin(),
646	lstFormatsSupported.end(), lstFormatsWanted.at(i)) != lstFormatsSupported.end())
647	{
648	lstFormats.push_back(lstFormatsWanted[i]);
649	}
650	}
651
652	return lstFormats;
653	}
654
655	/* static */
656	GuestDnDMIMEList GuestDnD::toFilteredFormatList(const GuestDnDMIMEList &lstFormatsSupported, const com::Utf8Str &strFormatsWanted)
657	{
658	GuestDnDMIMEList lstFmt;
659
660	RTCList<RTCString> lstFormats = strFormatsWanted.split("\r\n");
661	size_t i = 0;
662	while (i < lstFormats.size())
663	{
664	/* Only keep allowed format types. */
665	if (std::find(lstFormatsSupported.begin(),
666	lstFormatsSupported.end(), lstFormats.at(i)) != lstFormatsSupported.end())
667	{
668	lstFmt.push_back(lstFormats[i]);
669	}
670	i++;
671	}
672
673	return lstFmt;
674	}
675
676	/* static */
677	uint32_t GuestDnD::toHGCMAction(DnDAction_T enmAction)
678	{
679	uint32_t uAction = DND_IGNORE_ACTION;
680	switch (enmAction)
681	{
682	case DnDAction_Copy:
683	uAction = DND_COPY_ACTION;
684	break;
685	case DnDAction_Move:
686	uAction = DND_MOVE_ACTION;
687	break;
688	case DnDAction_Link:
689	/* For now it doesn't seems useful to allow a link
690	action between host & guest. Later? */
691	case DnDAction_Ignore:
692	/* Ignored. */
693	break;
694	default:
695	AssertMsgFailed(("Action %RU32 not recognized!\n", enmAction));
696	break;
697	}
698
699	return uAction;
700	}
701
702	/* static */
703	void GuestDnD::toHGCMActions(DnDAction_T enmDefAction,
704	uint32_t *puDefAction,
705	const std::vector<DnDAction_T> vecAllowedActions,
706	uint32_t *puAllowedActions)
707	{
708	uint32_t uAllowedActions = DND_IGNORE_ACTION;
709	uint32_t uDefAction = toHGCMAction(enmDefAction);
710
711	if (!vecAllowedActions.empty())
712	{
713	/* First convert the allowed actions to a bit array. */
714	for (size_t i = 0; i < vecAllowedActions.size(); i++)
715	uAllowedActions \|= toHGCMAction(vecAllowedActions[i]);
716
717	/*
718	* If no default action is set (ignoring), try one of the
719	* set allowed actions, preferring copy, move (in that order).
720	*/
721	if (isDnDIgnoreAction(uDefAction))
722	{
723	if (hasDnDCopyAction(uAllowedActions))
724	uDefAction = DND_COPY_ACTION;
725	else if (hasDnDMoveAction(uAllowedActions))
726	uDefAction = DND_MOVE_ACTION;
727	}
728	}
729
730	if (puDefAction)
731	*puDefAction = uDefAction;
732	if (puAllowedActions)
733	*puAllowedActions = uAllowedActions;
734	}
735
736	/* static */
737	DnDAction_T GuestDnD::toMainAction(uint32_t uAction)
738	{
739	/* For now it doesn't seems useful to allow a
740	* link action between host & guest. Maybe later! */
741	return (isDnDCopyAction(uAction) ? (DnDAction_T)DnDAction_Copy :
742	isDnDMoveAction(uAction) ? (DnDAction_T)DnDAction_Move :
743	(DnDAction_T)DnDAction_Ignore);
744	}
745
746	/* static */
747	std::vector<DnDAction_T> GuestDnD::toMainActions(uint32_t uActions)
748	{
749	std::vector<DnDAction_T> vecActions;
750
751	/* For now it doesn't seems useful to allow a
752	* link action between host & guest. Maybe later! */
753	RTCList<DnDAction_T> lstActions;
754	if (hasDnDCopyAction(uActions))
755	lstActions.append(DnDAction_Copy);
756	if (hasDnDMoveAction(uActions))
757	lstActions.append(DnDAction_Move);
758
759	for (size_t i = 0; i < lstActions.size(); ++i)
760	vecActions.push_back(lstActions.at(i));
761
762	return vecActions;
763	}
764
765	///////////////////////////////////////////////////////////////////////////////
766
767	GuestDnDBase::GuestDnDBase(void)
768	{
769	/* Initialize public attributes. */
770	m_lstFmtSupported = GuestDnDInst()->defaultFormats();
771
772	/* Initialzie private stuff. */
773	mDataBase.m_cTransfersPending = 0;
774	mDataBase.m_uProtocolVersion = 0;
775	}
776
777	HRESULT GuestDnDBase::i_isFormatSupported(const com::Utf8Str &aFormat, BOOL *aSupported)
778	{
779	*aSupported = std::find(m_lstFmtSupported.begin(),
780	m_lstFmtSupported.end(), aFormat) != m_lstFmtSupported.end()
781	? TRUE : FALSE;
782	return S_OK;
783	}
784
785	HRESULT GuestDnDBase::i_getFormats(GuestDnDMIMEList &aFormats)
786	{
787	aFormats = m_lstFmtSupported;
788
789	return S_OK;
790	}
791
792	HRESULT GuestDnDBase::i_addFormats(const GuestDnDMIMEList &aFormats)
793	{
794	for (size_t i = 0; i < aFormats.size(); ++i)
795	{
796	Utf8Str strFormat = aFormats.at(i);
797	if (std::find(m_lstFmtSupported.begin(),
798	m_lstFmtSupported.end(), strFormat) == m_lstFmtSupported.end())
799	{
800	m_lstFmtSupported.push_back(strFormat);
801	}
802	}
803
804	return S_OK;
805	}
806
807	HRESULT GuestDnDBase::i_removeFormats(const GuestDnDMIMEList &aFormats)
808	{
809	for (size_t i = 0; i < aFormats.size(); ++i)
810	{
811	Utf8Str strFormat = aFormats.at(i);
812	GuestDnDMIMEList::iterator itFormat = std::find(m_lstFmtSupported.begin(),
813	m_lstFmtSupported.end(), strFormat);
814	if (itFormat != m_lstFmtSupported.end())
815	m_lstFmtSupported.erase(itFormat);
816	}
817
818	return S_OK;
819	}
820
821	HRESULT GuestDnDBase::i_getProtocolVersion(ULONG *puVersion)
822	{
823	int rc = getProtocolVersion((uint32_t *)puVersion);
824	return RT_SUCCESS(rc) ? S_OK : E_FAIL;
825	}
826
827	/**
828	* Tries to guess the DnD protocol version to use on the guest, based on the
829	* installed Guest Additions version + revision.
830	*
831	* If unable to retrieve the protocol version, VERR_NOT_FOUND is returned along
832	* with protocol version 1.
833	*
834	* @return IPRT status code.
835	* @param puProto Where to store the protocol version.
836	*/
837	int GuestDnDBase::getProtocolVersion(uint32_t *puProto)
838	{
839	AssertPtrReturn(puProto, VERR_INVALID_POINTER);
840
841	int rc;
842
843	uint32_t uProto = 0;
844	uint32_t uVerAdditions;
845	uint32_t uRevAdditions;
846	if ( m_pGuest
847	&& (uVerAdditions = m_pGuest->i_getAdditionsVersion()) > 0
848	&& (uRevAdditions = m_pGuest->i_getAdditionsRevision()) > 0)
849	{
850	#if 0 && defined(DEBUG)
851	/* Hardcode the to-used protocol version; nice for testing side effects. */
852	if (true)
853	uProto = 3;
854	else
855	#endif
856	if (uVerAdditions >= VBOX_FULL_VERSION_MAKE(5, 0, 0))
857	{
858	/** @todo
859	* r=bird: This is just too bad for anyone using an OSE additions build...
860	*/
861	if (uRevAdditions >= 103344) /* Since r103344: Protocol v3. */
862	uProto = 3;
863	else
864	uProto = 2; /* VBox 5.0.0 - 5.0.8: Protocol v2. */
865	}
866	/* else: uProto: 0 */
867
868	LogFlowFunc(("uVerAdditions=%RU32 (%RU32.%RU32.%RU32), r%RU32\n",
869	uVerAdditions, VBOX_FULL_VERSION_GET_MAJOR(uVerAdditions), VBOX_FULL_VERSION_GET_MINOR(uVerAdditions),
870	VBOX_FULL_VERSION_GET_BUILD(uVerAdditions), uRevAdditions));
871	rc = VINF_SUCCESS;
872	}
873	else
874	{
875	uProto = 1; /* Fallback. */
876	rc = VERR_NOT_FOUND;
877	}
878
879	LogRel2(("DnD: Guest is using protocol v%RU32, rc=%Rrc\n", uProto, rc));
880
881	*puProto = uProto;
882	return rc;
883	}
884
885	int GuestDnDBase::msgQueueAdd(GuestDnDMsg *pMsg)
886	{
887	mDataBase.m_lstMsgOut.push_back(pMsg);
888	return VINF_SUCCESS;
889	}
890
891	GuestDnDMsg *GuestDnDBase::msgQueueGetNext(void)
892	{
893	if (mDataBase.m_lstMsgOut.empty())
894	return NULL;
895	return mDataBase.m_lstMsgOut.front();
896	}
897
898	void GuestDnDBase::msgQueueRemoveNext(void)
899	{
900	if (!mDataBase.m_lstMsgOut.empty())
901	{
902	GuestDnDMsg *pMsg = mDataBase.m_lstMsgOut.front();
903	if (pMsg)
904	delete pMsg;
905	mDataBase.m_lstMsgOut.pop_front();
906	}
907	}
908
909	void GuestDnDBase::msgQueueClear(void)
910	{
911	LogFlowFunc(("cMsg=%zu\n", mDataBase.m_lstMsgOut.size()));
912
913	GuestDnDMsgList::iterator itMsg = mDataBase.m_lstMsgOut.begin();
914	while (itMsg != mDataBase.m_lstMsgOut.end())
915	{
916	GuestDnDMsg pMsg = itMsg;
917	if (pMsg)
918	delete pMsg;
919
920	itMsg++;
921	}
922
923	mDataBase.m_lstMsgOut.clear();
924	}
925
926	int GuestDnDBase::sendCancel(void)
927	{
928	int rc = GuestDnDInst()->hostCall(HOST_DND_HG_EVT_CANCEL,
929	0 /* cParms /, NULL / paParms */);
930
931	LogFlowFunc(("Generated cancelling request, rc=%Rrc\n", rc));
932	return rc;
933	}
934
935	int GuestDnDBase::updateProgress(GuestDnDData pData, GuestDnDResponse pResp,
936	uint32_t cbDataAdd /* = 0 */)
937	{
938	AssertPtrReturn(pData, VERR_INVALID_POINTER);
939	AssertPtrReturn(pResp, VERR_INVALID_POINTER);
940	/* cbDataAdd is optional. */
941
942	LogFlowFunc(("cbTotal=%RU64, cbProcessed=%RU64, cbRemaining=%RU64, cbDataAdd=%RU32\n",
943	pData->getTotal(), pData->getProcessed(), pData->getRemaining(), cbDataAdd));
944
945	if (!pResp)
946	return VINF_SUCCESS;
947
948	if (cbDataAdd)
949	pData->addProcessed(cbDataAdd);
950
951	int rc = pResp->setProgress(pData->getPercentComplete(),
952	pData->isComplete()
953	? DND_PROGRESS_COMPLETE
954	: DND_PROGRESS_RUNNING);
955	LogFlowFuncLeaveRC(rc);
956	return rc;
957	}
958
959	/** @todo GuestDnDResponse pResp needs to go. /
960	int GuestDnDBase::waitForEvent(GuestDnDCallbackEvent pEvent, GuestDnDResponse pResp, RTMSINTERVAL msTimeout)
961	{
962	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
963	AssertPtrReturn(pResp, VERR_INVALID_POINTER);
964
965	int rc;
966
967	LogFlowFunc(("msTimeout=%RU32\n", msTimeout));
968
969	uint64_t tsStart = RTTimeMilliTS();
970	do
971	{
972	/*
973	* Wait until our desired callback triggered the
974	* wait event. As we don't want to block if the guest does not
975	* respond, do busy waiting here.
976	*/
977	rc = pEvent->Wait(500 /* ms */);
978	if (RT_SUCCESS(rc))
979	{
980	rc = pEvent->Result();
981	LogFlowFunc(("Callback done, result is %Rrc\n", rc));
982	break;
983	}
984	else if (rc == VERR_TIMEOUT) /* Continue waiting. */
985	rc = VINF_SUCCESS;
986
987	if ( msTimeout != RT_INDEFINITE_WAIT
988	&& RTTimeMilliTS() - tsStart > msTimeout)
989	{
990	rc = VERR_TIMEOUT;
991	LogRel2(("DnD: Error: Guest did not respond within time\n"));
992	}
993	else if (pResp->isProgressCanceled()) /** @todo GuestDnDResponse pResp needs to go. /
994	{
995	LogRel2(("DnD: Operation was canceled by user\n"));
996	rc = VERR_CANCELLED;
997	}
998
999	} while (RT_SUCCESS(rc));
1000
1001	LogFlowFuncLeaveRC(rc);
1002	return rc;
1003	}
1004	#endif /* VBOX_WITH_DRAG_AND_DROP */
1005

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source: vbox/trunk/src/VBox/Main/src-client/GuestDnDPrivate.cpp@ 64093

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