GuestDnDPrivate.cpp@ 57194

Last change on this file since 57194 was 56734, checked in by vboxsync, 9 years ago
DnD/Main: Fixed setting the default action based on the allowed actions.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 29.2 KB

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1	/* $Id: GuestDnDPrivate.cpp 56734 2015-07-01 14:09:26Z vboxsync $ */
2	/** @file
3	* Private guest drag and drop code, used by GuestDnDTarget +
4	* GuestDnDSource.
5	*/
6
7	/*
8	* Copyright (C) 2011-2015 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_parent(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_strFmtReq = "";
224	}
225
226	HRESULT GuestDnDResponse::resetProgress(const ComObjPtr<Guest>& pParent)
227	{
228	m_progress.setNull();
229
230	HRESULT hr = m_progress.createObject();
231	if (SUCCEEDED(hr))
232	{
233	hr = m_progress->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_progress.isNull())
245	{
246	HRESULT hr = m_progress->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	LogFlowFunc(("uStatus=%RU32, uPercentage=%RU32, rcOp=%Rrc, strMsg=%s\n",
284	uStatus, uPercentage, rcOp, strMsg.c_str()));
285
286	int rc = VINF_SUCCESS;
287	if (!m_progress.isNull())
288	{
289	BOOL fCompleted;
290	HRESULT hr = m_progress->COMGETTER(Completed)(&fCompleted);
291	AssertComRC(hr);
292
293	BOOL fCanceled;
294	hr = m_progress->COMGETTER(Canceled)(&fCanceled);
295	AssertComRC(hr);
296
297	LogFlowFunc(("Current: fCompleted=%RTbool, fCanceled=%RTbool\n", fCompleted, fCanceled));
298
299	if (!fCompleted)
300	{
301	switch (uStatus)
302	{
303	case DragAndDropSvc::DND_PROGRESS_ERROR:
304	{
305	hr = m_progress->i_notifyComplete(VBOX_E_IPRT_ERROR,
306	COM_IIDOF(IGuest),
307	m_parent->getComponentName(), strMsg.c_str());
308	reset();
309	break;
310	}
311
312	case DragAndDropSvc::DND_PROGRESS_CANCELLED:
313	{
314	hr = m_progress->i_notifyComplete(S_OK);
315	AssertComRC(hr);
316
317	reset();
318	break;
319	}
320
321	case DragAndDropSvc::DND_PROGRESS_RUNNING:
322	case DragAndDropSvc::DND_PROGRESS_COMPLETE:
323	{
324	if (!fCanceled)
325	{
326	hr = m_progress->SetCurrentOperationProgress(uPercentage);
327	AssertComRC(hr);
328	if ( uStatus == DragAndDropSvc::DND_PROGRESS_COMPLETE
329	\|\| uPercentage >= 100)
330	{
331	hr = m_progress->i_notifyComplete(S_OK);
332	AssertComRC(hr);
333	}
334	}
335	break;
336	}
337
338	default:
339	break;
340	}
341	}
342
343	hr = m_progress->COMGETTER(Completed)(&fCompleted);
344	AssertComRC(hr);
345	hr = m_progress->COMGETTER(Canceled)(&fCanceled);
346	AssertComRC(hr);
347
348	LogFlowFunc(("New: fCompleted=%RTbool, fCanceled=%RTbool\n", fCompleted, fCanceled));
349	}
350
351	LogFlowFuncLeaveRC(rc);
352	return rc;
353	}
354
355	int GuestDnDResponse::onDispatch(uint32_t u32Function, void *pvParms, uint32_t cbParms)
356	{
357	LogFlowFunc(("u32Function=%RU32, pvParms=%p, cbParms=%RU32\n", u32Function, pvParms, cbParms));
358
359	int rc = VERR_WRONG_ORDER; /* Play safe. */
360	bool fTryCallbacks = false;
361
362	switch (u32Function)
363	{
364	case DragAndDropSvc::GUEST_DND_HG_ACK_OP:
365	{
366	DragAndDropSvc::PVBOXDNDCBHGACKOPDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGACKOPDATA>(pvParms);
367	AssertPtr(pCBData);
368	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGACKOPDATA) == cbParms, VERR_INVALID_PARAMETER);
369	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_ACK_OP == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
370
371	setDefAction(pCBData->uAction);
372	rc = notifyAboutGuestResponse();
373	break;
374	}
375
376	case DragAndDropSvc::GUEST_DND_HG_REQ_DATA:
377	{
378	DragAndDropSvc::PVBOXDNDCBHGREQDATADATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGREQDATADATA>(pvParms);
379	AssertPtr(pCBData);
380	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGREQDATADATA) == cbParms, VERR_INVALID_PARAMETER);
381	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_REQ_DATA == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
382
383	if ( pCBData->cbFormat == 0
384	\|\| pCBData->cbFormat > _64K)
385	{
386	rc = VERR_INVALID_PARAMETER;
387	}
388	else
389	{
390	setFmtReq(pCBData->pszFormat);
391
392	rc = VINF_SUCCESS;
393	}
394
395	int rc2 = notifyAboutGuestResponse();
396	if (RT_SUCCESS(rc))
397	rc = rc2;
398	break;
399	}
400
401	case DragAndDropSvc::GUEST_DND_HG_EVT_PROGRESS:
402	{
403	DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA pCBData =
404	reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA>(pvParms);
405	AssertPtr(pCBData);
406	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGEVTPROGRESSDATA) == cbParms, VERR_INVALID_PARAMETER);
407	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_EVT_PROGRESS == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
408
409	rc = setProgress(pCBData->uPercentage, pCBData->uStatus, pCBData->rc);
410	if (RT_SUCCESS(rc))
411	rc = notifyAboutGuestResponse();
412	break;
413	}
414	#ifdef VBOX_WITH_DRAG_AND_DROP_GH
415	case DragAndDropSvc::GUEST_DND_GH_ACK_PENDING:
416	{
417	DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA pCBData =
418	reinterpret_cast<DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA>(pvParms);
419	AssertPtr(pCBData);
420	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBGHACKPENDINGDATA) == cbParms, VERR_INVALID_PARAMETER);
421	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_GH_ACK_PENDING == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
422
423	if ( pCBData->cbFormat == 0
424	\|\| pCBData->cbFormat > _64K)
425	{
426	rc = VERR_INVALID_PARAMETER;
427	}
428	else
429	{
430	setFmtReq (pCBData->pszFormat);
431	setDefAction (pCBData->uDefAction);
432	setAllActions(pCBData->uAllActions);
433
434	rc = VINF_SUCCESS;
435	}
436
437	int rc2 = notifyAboutGuestResponse();
438	if (RT_SUCCESS(rc))
439	rc = rc2;
440	break;
441	}
442	#endif /* VBOX_WITH_DRAG_AND_DROP_GH */
443	default:
444	/* * Try if the event is covered by a registered callback. */
445	fTryCallbacks = true;
446	break;
447	}
448
449	/*
450	* Try the host's installed callbacks (if any).
451	*/
452	if (fTryCallbacks)
453	{
454	GuestDnDCallbackMap::const_iterator it = m_mapCallbacks.find(u32Function);
455	if (it != m_mapCallbacks.end())
456	{
457	AssertPtr(it->second.pfnCallback);
458	rc = it->second.pfnCallback(u32Function, pvParms, cbParms, it->second.pvUser);
459	}
460	else
461	rc = VERR_NO_DATA; /* Tell the guest. */
462	}
463
464	LogFlowFunc(("Returning rc=%Rrc\n", rc));
465	return rc;
466	}
467
468	HRESULT GuestDnDResponse::queryProgressTo(IProgress **ppProgress)
469	{
470	return m_progress.queryInterfaceTo(ppProgress);
471	}
472
473	int GuestDnDResponse::waitForGuestResponse(RTMSINTERVAL msTimeout /= 500 /) const
474	{
475	int rc = RTSemEventWait(m_EventSem, msTimeout);
476	#ifdef DEBUG_andy
477	LogFlowFunc(("msTimeout=%RU32, rc=%Rrc\n", msTimeout, rc));
478	#endif
479	return rc;
480	}
481
482	///////////////////////////////////////////////////////////////////////////////
483
484	GuestDnD* GuestDnD::s_pInstance = NULL;
485
486	GuestDnD::GuestDnD(const ComObjPtr<Guest> &pGuest)
487	: m_pGuest(pGuest)
488	{
489	LogFlowFuncEnter();
490
491	m_pResponse = new GuestDnDResponse(pGuest);
492
493	/* List of supported default MIME types. */
494	LogRel2(("DnD: Supported default host formats:\n"));
495	const com::Utf8Str arrEntries[] = { VBOX_DND_FORMATS_DEFAULT };
496	for (size_t i = 0; i < RT_ELEMENTS(arrEntries); i++)
497	{
498	m_strDefaultFormats.push_back(arrEntries[i]);
499	LogRel2(("DnD: \t%s\n", arrEntries[i].c_str()));
500	}
501	}
502
503	GuestDnD::~GuestDnD(void)
504	{
505	LogFlowFuncEnter();
506
507	if (m_pResponse)
508	delete m_pResponse;
509	}
510
511	int GuestDnD::adjustScreenCoordinates(ULONG uScreenId, ULONG puX, ULONG puY) const
512	{
513	/** @todo r=andy Save the current screen's shifting coordinates to speed things up.
514	* Only query for new offsets when the screen ID has changed. */
515
516	/* For multi-monitor support we need to add shift values to the coordinates
517	* (depending on the screen number). */
518	ComObjPtr<Console> pConsole = m_pGuest->i_getConsole();
519	ComPtr<IDisplay> pDisplay;
520	HRESULT hr = pConsole->COMGETTER(Display)(pDisplay.asOutParam());
521	if (FAILED(hr))
522	return hr;
523
524	ULONG dummy;
525	LONG xShift, yShift;
526	GuestMonitorStatus_T monitorStatus;
527	hr = pDisplay->GetScreenResolution(uScreenId, &dummy, &dummy, &dummy,
528	&xShift, &yShift, &monitorStatus);
529	if (FAILED(hr))
530	return hr;
531
532	if (puX)
533	*puX += xShift;
534	if (puY)
535	*puY += yShift;
536
537	#ifdef DEBUG_andy
538	LogFlowFunc(("uScreenId=%RU32, x=%RU32, y=%RU32\n",
539	uScreenId, puX ? puX : 0, puY ? puY : 0));
540	#endif
541	return VINF_SUCCESS;
542	}
543
544	int GuestDnD::hostCall(uint32_t u32Function, uint32_t cParms, PVBOXHGCMSVCPARM paParms) const
545	{
546	Assert(!m_pGuest.isNull());
547	ComObjPtr<Console> pConsole = m_pGuest->i_getConsole();
548
549	/* Forward the information to the VMM device. */
550	Assert(!pConsole.isNull());
551	VMMDev *pVMMDev = pConsole->i_getVMMDev();
552	if (!pVMMDev)
553	return VERR_COM_OBJECT_NOT_FOUND;
554
555	int rc = pVMMDev->hgcmHostCall("VBoxDragAndDropSvc", u32Function, cParms, paParms);
556	LogFlowFunc(("uMsg=%RU32, cParms=%RU32, rc=%Rrc\n", u32Function, cParms, rc));
557	return rc;
558	}
559
560	/* static */
561	DECLCALLBACK(int) GuestDnD::notifyDnDDispatcher(void *pvExtension, uint32_t u32Function,
562	void *pvParms, uint32_t cbParms)
563	{
564	LogFlowFunc(("pvExtension=%p, u32Function=%RU32, pvParms=%p, cbParms=%RU32\n",
565	pvExtension, u32Function, pvParms, cbParms));
566
567	GuestDnD pGuestDnD = reinterpret_cast<GuestDnD>(pvExtension);
568	AssertPtrReturn(pGuestDnD, VERR_INVALID_POINTER);
569
570	/** @todo In case we need to handle multiple guest DnD responses at a time this
571	* would be the place to lookup and dispatch to those. For the moment we
572	* only have one response -- simple. */
573	GuestDnDResponse *pResp = pGuestDnD->m_pResponse;
574	if (pResp)
575	return pResp->onDispatch(u32Function, pvParms, cbParms);
576
577	return VERR_NOT_SUPPORTED;
578	}
579
580
581	/* static */
582	com::Utf8Str GuestDnD::toFormatString(const std::vector<com::Utf8Str> &lstSupportedFormats,
583	const std::vector<com::Utf8Str> &lstWantedFormats)
584	{
585	com::Utf8Str strFormat;
586	for (size_t i = 0; i < lstWantedFormats.size(); ++i)
587	{
588	const com::Utf8Str &f = lstWantedFormats.at(i);
589	/* Only keep allowed format types. */
590	if (std::find(lstSupportedFormats.begin(),
591	lstSupportedFormats.end(), f) != lstSupportedFormats.end())
592	strFormat += f + "\r\n";
593	}
594
595	return strFormat;
596	}
597
598	/* static */
599	void GuestDnD::toFormatVector(const std::vector<com::Utf8Str> &lstSupportedFormats,
600	const com::Utf8Str &strFormats,
601	std::vector<com::Utf8Str> &vecformats)
602	{
603	RTCList<RTCString> lstFormats = strFormats.split("\r\n");
604	size_t i = 0;
605	while (i < lstFormats.size())
606	{
607	/* Only keep allowed format types. */
608	if (std::find(lstSupportedFormats.begin(),
609	lstSupportedFormats.end(), lstFormats.at(i)) == lstSupportedFormats.end())
610	lstFormats.removeAt(i);
611	else
612	++i;
613	}
614
615	for (i = 0; i < lstFormats.size(); i++)
616	{
617	const Utf8Str &f = lstFormats.at(i);
618	if (std::find(lstSupportedFormats.begin(),
619	lstSupportedFormats.end(), f) != lstSupportedFormats.end())
620	vecformats.push_back(lstFormats[i]);
621	}
622	}
623
624	/* static */
625	uint32_t GuestDnD::toHGCMAction(DnDAction_T enmAction)
626	{
627	uint32_t uAction = DND_IGNORE_ACTION;
628	switch (enmAction)
629	{
630	case DnDAction_Copy:
631	uAction = DND_COPY_ACTION;
632	break;
633	case DnDAction_Move:
634	uAction = DND_MOVE_ACTION;
635	break;
636	case DnDAction_Link:
637	/* For now it doesn't seems useful to allow a link
638	action between host & guest. Later? */
639	case DnDAction_Ignore:
640	/* Ignored. */
641	break;
642	default:
643	AssertMsgFailed(("Action %RU32 not recognized!\n", enmAction));
644	break;
645	}
646
647	return uAction;
648	}
649
650	/* static */
651	void GuestDnD::toHGCMActions(DnDAction_T enmDefAction,
652	uint32_t *puDefAction,
653	const std::vector<DnDAction_T> vecAllowedActions,
654	uint32_t *puAllowedActions)
655	{
656	uint32_t uAllowedActions = DND_IGNORE_ACTION;
657	uint32_t uDefAction = toHGCMAction(enmDefAction);
658
659	if (!vecAllowedActions.empty())
660	{
661	/* First convert the allowed actions to a bit array. */
662	for (size_t i = 0; i < vecAllowedActions.size(); i++)
663	uAllowedActions \|= toHGCMAction(vecAllowedActions[i]);
664
665	/*
666	* If no default action is set (ignoring), try one of the
667	* set allowed actions, preferring copy, move (in that order).
668	*/
669	if (isDnDIgnoreAction(uDefAction))
670	{
671	if (hasDnDCopyAction(uAllowedActions))
672	uDefAction = DND_COPY_ACTION;
673	else if (hasDnDMoveAction(uAllowedActions))
674	uDefAction = DND_MOVE_ACTION;
675	}
676	}
677
678	if (puDefAction)
679	*puDefAction = uDefAction;
680	if (puAllowedActions)
681	*puAllowedActions = uAllowedActions;
682	}
683
684	/* static */
685	DnDAction_T GuestDnD::toMainAction(uint32_t uAction)
686	{
687	/* For now it doesn't seems useful to allow a
688	* link action between host & guest. Maybe later! */
689	return (isDnDCopyAction(uAction) ? (DnDAction_T)DnDAction_Copy :
690	isDnDMoveAction(uAction) ? (DnDAction_T)DnDAction_Move :
691	(DnDAction_T)DnDAction_Ignore);
692	}
693
694	/* static */
695	void GuestDnD::toMainActions(uint32_t uActions,
696	std::vector<DnDAction_T> &vecActions)
697	{
698	/* For now it doesn't seems useful to allow a
699	* link action between host & guest. Maybe later! */
700	RTCList<DnDAction_T> lstActions;
701	if (hasDnDCopyAction(uActions))
702	lstActions.append(DnDAction_Copy);
703	if (hasDnDMoveAction(uActions))
704	lstActions.append(DnDAction_Move);
705
706	for (size_t i = 0; i < lstActions.size(); ++i)
707	vecActions.push_back(lstActions.at(i));
708	}
709
710	///////////////////////////////////////////////////////////////////////////////
711
712	GuestDnDBase::GuestDnDBase(void)
713	{
714	mDataBase.mfTransferIsPending = false;
715
716	/*
717	* Initialize public attributes.
718	*/
719	m_vecFmtSup = GuestDnDInst()->defaultFormats();
720	}
721
722	HRESULT GuestDnDBase::i_isFormatSupported(const com::Utf8Str &aFormat, BOOL *aSupported)
723	{
724	*aSupported = std::find(m_vecFmtSup.begin(),
725	m_vecFmtSup.end(), aFormat) != m_vecFmtSup.end()
726	? TRUE : FALSE;
727	return S_OK;
728	}
729
730	HRESULT GuestDnDBase::i_getFormats(std::vector<com::Utf8Str> &aFormats)
731	{
732	aFormats = m_vecFmtSup;
733
734	return S_OK;
735	}
736
737	HRESULT GuestDnDBase::i_addFormats(const std::vector<com::Utf8Str> &aFormats)
738	{
739	for (size_t i = 0; i < aFormats.size(); ++i)
740	{
741	Utf8Str strFormat = aFormats.at(i);
742	if (std::find(m_vecFmtSup.begin(),
743	m_vecFmtSup.end(), strFormat) == m_vecFmtSup.end())
744	{
745	m_vecFmtSup.push_back(strFormat);
746	}
747	}
748
749	return S_OK;
750	}
751
752	HRESULT GuestDnDBase::i_removeFormats(const std::vector<com::Utf8Str> &aFormats)
753	{
754	for (size_t i = 0; i < aFormats.size(); ++i)
755	{
756	Utf8Str strFormat = aFormats.at(i);
757	std::vector<com::Utf8Str>::iterator itFormat = std::find(m_vecFmtSup.begin(),
758	m_vecFmtSup.end(), strFormat);
759	if (itFormat != m_vecFmtSup.end())
760	m_vecFmtSup.erase(itFormat);
761	}
762
763	return S_OK;
764	}
765
766	HRESULT GuestDnDBase::i_getProtocolVersion(ULONG *puVersion)
767	{
768	int rc = getProtocolVersion((uint32_t *)puVersion);
769	return RT_SUCCESS(rc) ? S_OK : E_FAIL;
770	}
771
772	int GuestDnDBase::getProtocolVersion(uint32_t *puVersion)
773	{
774	AssertPtrReturn(puVersion, VERR_INVALID_POINTER);
775
776	int rc;
777
778	uint32_t uVer, uVerAdditions = 0;
779	if ( m_pGuest
780	&& (uVerAdditions = m_pGuest->i_getAdditionsVersion()) > 0)
781	{
782	uint32_t uVBoxMajor = VBOX_FULL_VERSION_GET_MAJOR(uVerAdditions);
783	uint32_t uVBoxMinor = VBOX_FULL_VERSION_GET_MINOR(uVerAdditions);
784
785	#if 0 /def DEBUG_andy/
786	/* Hardcode the to-used protocol version; nice for testing side effects. */
787	uVer = 2;
788	#else
789	uVer = ( uVBoxMajor >= 5)
790	? 2 /* VBox 5.0 and up: Protocol version 2. */
791	: 1; /* VBox <= 4.3: Protocol version 1. */
792	/* Build revision is ignored. */
793	#endif
794
795	LogFlowThisFunc(("uVerAdditions=%RU32 (%RU32.%RU32)\n", uVerAdditions, uVBoxMajor, uVBoxMinor));
796	rc = VINF_SUCCESS;
797	}
798	else
799	{
800	uVer = 1; /* Fallback. */
801	rc = VERR_NOT_FOUND;
802	}
803
804	LogFlowThisFunc(("uVer=%RU32, uVerAdditions=%RU32, rc=%Rrc\n", uVer, uVerAdditions, rc));
805
806	*puVersion = uVer;
807	return rc;
808	}
809
810	int GuestDnDBase::msgQueueAdd(GuestDnDMsg *pMsg)
811	{
812	mDataBase.mListOutgoing.push_back(pMsg);
813	return VINF_SUCCESS;
814	}
815
816	GuestDnDMsg *GuestDnDBase::msgQueueGetNext(void)
817	{
818	if (mDataBase.mListOutgoing.empty())
819	return NULL;
820	return mDataBase.mListOutgoing.front();
821	}
822
823	void GuestDnDBase::msgQueueRemoveNext(void)
824	{
825	if (!mDataBase.mListOutgoing.empty())
826	{
827	GuestDnDMsg *pMsg = mDataBase.mListOutgoing.front();
828	if (pMsg)
829	delete pMsg;
830	mDataBase.mListOutgoing.pop_front();
831	}
832	}
833
834	void GuestDnDBase::msgQueueClear(void)
835	{
836	GuestDnDMsgList::iterator itMsg = mDataBase.mListOutgoing.begin();
837	while (itMsg != mDataBase.mListOutgoing.end())
838	{
839	delete *itMsg;
840	}
841
842	mDataBase.mListOutgoing.clear();
843	}
844
845	int GuestDnDBase::sendCancel(void)
846	{
847	int rc;
848	try
849	{
850	GuestDnDMsg *pMsgCancel = new GuestDnDMsg();
851	pMsgCancel->setType(DragAndDropSvc::HOST_DND_HG_EVT_CANCEL);
852
853	rc = msgQueueAdd(pMsgCancel);
854	}
855	catch(std::bad_alloc & /e/)
856	{
857	rc = VERR_NO_MEMORY;
858	}
859
860	LogFlowFunc(("Generated cancelling request, rc=%Rrc\n", rc));
861	return rc;
862	}
863
864	/** @todo GuestDnDResponse pResp needs to go. /
865	int GuestDnDBase::waitForEvent(RTMSINTERVAL msTimeout, GuestDnDCallbackEvent &Event, GuestDnDResponse *pResp)
866	{
867	int rc;
868
869	uint64_t tsStart = RTTimeMilliTS();
870	do
871	{
872	/*
873	* Wait until our desired callback triggered the
874	* wait event. As we don't want to block if the guest does not
875	* respond, do busy waiting here.
876	*/
877	rc = Event.Wait(500 /* ms */);
878	if (RT_SUCCESS(rc))
879	{
880	rc = Event.Result();
881	LogFlowFunc(("Callback done, result is %Rrc\n", rc));
882	break;
883	}
884	else if (rc == VERR_TIMEOUT) /* Continue waiting. */
885	rc = VINF_SUCCESS;
886
887	if ( msTimeout != RT_INDEFINITE_WAIT
888	&& RTTimeMilliTS() - tsStart > msTimeout)
889	{
890	rc = VERR_TIMEOUT;
891	LogRel2(("DnD: Error: Guest did not respond within time\n"));
892	}
893	else if (pResp->isProgressCanceled()) /** @todo GuestDnDResponse pResp needs to go. /
894	{
895	LogRel2(("DnD: Operation was canceled by user\n"));
896	rc = VERR_CANCELLED;
897	}
898
899	} while (RT_SUCCESS(rc));
900
901	LogFlowFuncLeaveRC(rc);
902	return rc;
903	}
904	#endif /* VBOX_WITH_DRAG_AND_DROP */
905

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source: vbox/trunk/src/VBox/Main/src-client/GuestDnDPrivate.cpp@ 57194

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