GuestDnDImpl.cpp@ 42546

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1	/* $Id: GuestDnDImpl.cpp 42278 2012-07-20 15:15:38Z vboxsync $ */
2	/** @file
3	* VirtualBox COM class implementation: Guest Drag and Drop parts
4	*/
5
6	/*
7	* Copyright (C) 2011-2012 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	#include "GuestImpl.h"
19	#include "AutoCaller.h"
20
21	#ifdef VBOX_WITH_DRAG_AND_DROP
22	# include "ConsoleImpl.h"
23	# include "ProgressImpl.h"
24	# include "GuestDnDImpl.h"
25
26	# include <VMMDev.h>
27
28	# include <VBox/com/list.h>
29	# include <VBox/HostServices/DragAndDropSvc.h>
30
31	# include <iprt/stream.h>
32	# include <iprt/semaphore.h>
33	# include <iprt/cpp/utils.h>
34
35	/* How does this work:
36	*
37	* Drag and Drop is handled over the internal HGCM service for the host <->
38	* guest communication. Beside that we need to map the Drag and Drop protocols
39	* of the various OS's we support to our internal channels, this is also highly
40	* communicative in both directions. Unfortunately HGCM isn't really designed
41	* for that. Next we have to foul some of the components. This includes to
42	* trick X11 on the guest side, but also Qt needs to be tricked on the host
43	* side a little bit.
44	*
45	* The following components are involved:
46	*
47	* 1. GUI: Uses the Qt classes for Drag and Drop and mainly forward the content
48	* of it to the Main IGuest interface (see UIDnDHandler.cpp).
49	* 2. Main: Public interface for doing Drag and Drop. Also manage the IProgress
50	* interfaces for blocking the caller by showing a progress dialog. (see
51	* this file)
52	* 3. HGCM service: Handle all messages from the host to the guest at once and
53	* encapsulate the internal communication details. (see dndmanager.cpp and
54	* friends)
55	* 4. Guest additions: Split into the platform neutral part (see
56	* VBoxGuestR3LibDragAndDrop.cpp) and the guest OS specific parts.
57	* Receive/send message from/to the HGCM service and does all guest specific
58	* operations. Currently only X11 is supported. (see draganddrop.cpp within
59	* VBoxClient)
60	*
61	* Host -> Guest:
62	* 1. There are DnD Enter, Move, Leave events which are send exactly like this
63	* to the guest. The info includes the pos, mimetypes and allowed actions.
64	* The guest has to respond with an action it would accept, so the GUI could
65	* change the cursor.
66	* 2. On drop, first a drop event is send. If this is accepted a drop data
67	* event follows. This blocks the GUI and shows some progress indicator.
68	*
69	* Guest -> Host:
70	* 1. The GUI is asking the guest if a DnD event is pending when the user moves
71	* the cursor out of the view window. If so, this returns the mimetypes and
72	* allowed actions.
73	* (2. On every mouse move this is asked again, to make sure the DnD event is
74	* still valid.)
75	* 3. On drop the host request the data from the guest. This blocks the GUI and
76	* shows some progress indicator.
77	*
78	* Some hints:
79	* m_sstrAllowedMimeTypes here in this file defines the allowed mime-types.
80	* This is necessary because we need special handling for some of the
81	* mime-types. E.g. for URI lists we need to transfer the actual dirs and
82	* files. Text EOL may to be changed. Also unknown mime-types may need special
83	* handling as well, which may lead to undefined behavior in the host/guest, if
84	* not done.
85	*
86	* Dropping of a directory, means recursively transferring _all_ the content.
87	*
88	* Directories and files are placed into a public visible user directory on the
89	* guest (~/Documents/VirtualBox Dropped Files). We can't delete them after the
90	* DnD operation, because we didn't know what the DnD target does with it. E.g.
91	* it could just be opened in place. This could lead ofc to filling up the disk
92	* within the guest. To inform the user about this, a small app could be
93	* developed which scans this directory regularly and inform the user with a
94	* tray icon hint (and maybe the possibility to clean this up instantly). The
95	* same has to be done in the G->H direction when it is implemented.
96	*
97	* Of course only regularly files are supported. Symlinks are resolved and
98	* transfered as regularly files. First we don't know if the other side support
99	* symlinks at all and second they could point to somewhere in a directory tree
100	* which not exists on the other side.
101	*
102	* The code tries to preserve the file modes of the transfered dirs/files. This
103	* is useful (and maybe necessary) for two things:
104	* 1. If a file is executable, it should be also after the transfer, so the
105	* user can just execute it, without manually tweaking the modes first.
106	* 2. If a dir/file is not accessible by group/others in the host, it shouldn't
107	* be in the guest.
108	* In any case, the user mode is always set to rwx (so that we can access it
109	* ourself, in e.g. for a cleanup case after cancel).
110	*
111	* Cancel is supported in both directions and cleans up all previous steps
112	* (thats is: deleting already transfered dirs/files).
113	*
114	* There are a lot of DO (debug output) calls in the code. This could be
115	* disabled, but should be removed (or replaced by Log calls) when this is
116	* nearly finished.
117	*
118	* For Windows guests there could be different communication become necessary.
119	* So the current interface isn't set in stone and should be made public only,
120	* after someone had deeply looked into the Win guest support. See
121	* http://www.catch22.net/tuts/dragdrop for a start.
122	*
123	* How to test:
124	* First set VBOX_WITH_DRAG_AND_DROP=1 in LocalConfig.kmk. The best is if the
125	* host match the guest OS arch. Just build the tree and point a shared folder
126	* within the guest to the additions subfolder in bin. Start the guest and
127	* execute ./VBoxClient --dragandrop --nodaemon within this shared folder. You
128	* should now be able of dragging text or files to the guest. I used a 64bit
129	* Linux for both the host and the guest. If the archs don't match, you need to
130	* first setup a build environment in the guest ofc.
131	*
132	* In general I propose the following changes in the VBox HGCM infrastructure
133	* for the future:
134	* - Currently it isn't really possible to send messages to the guest from the
135	* host. The host informs the guest just that there is something, the guest
136	* than has to ask which message and depending on that send the appropriate
137	* message to the host, which is filled with the right data.
138	* - There is no generic interface for sending bigger memory blocks to/from the
139	* guest. This is now done here, but I guess was also necessary for e.g.
140	* guest execution. So something generic which brake this up into smaller
141	* blocks and send it would be nice (with all the error handling and such
142	* ofc).
143	* - I developed a "protocol" for the DnD communication here. So the host and
144	* the guest have always to match in the revision. This is ofc bad, because
145	* the additions could be outdated easily. So some generic protocol number
146	* support in HGCM for asking the host and the guest of the support version,
147	* would be nice. Ofc at least the host should be able to talk to the guest,
148	* even when the version is below the host one.
149	* All this stuff would be useful for the current services, but also for future
150	* onces.
151	*
152	* Todo:
153	* - Dragging out of the guest (partly done)
154	* - ESC doesn't really work
155	* - transfer of URIs (that is the files and patching of the data)
156	* - testing in a multi monitor setup
157	* ... in any case it seems a little bit difficult to handle from the Qt
158	* side. Maybe also a host specific implementation becomes necessary ...
159	* this would be really worst ofc.
160	* - Win guest support (maybe there have to be done a mapping between the
161	* official mime-types and Win Clipboard formats (see QWindowsMime, for an
162	* idea), for VBox internally only mime-types should be used)
163	* - EOL handling on text (should be shared with the clipboard code)
164	* - add configuration (GH, HG, Bidirectional, None), like for the clipboard
165	* - HG->GH and GH->HG-switch: Handle the case the user drags something out of
166	* the guest and than return to the source view (or another window in the
167	* multiple guest screen scenario).
168	* - add support for more mime-types (especially images, csv)
169	* - test unusual behavior:
170	* - DnD service crash in the guest during a DnD op (e.g. crash of VBoxClient or X11)
171	* - not expected order of the events between HGCM and the guest
172	* - Security considerations: We transfer a lot of memory between the guest and
173	* the host and even allow the creation of dirs/files. Maybe there should be
174	* limits introduced to preventing DOS attacks or filling up all the memory
175	* (both in the host and the guest).
176	* - test, test, test ...
177	*/
178
179	class DnDGuestResponse
180	{
181	public:
182	DnDGuestResponse(const ComObjPtr<Guest>& pGuest);
183	~DnDGuestResponse();
184
185	int notifyAboutGuestResponse();
186	int waitForGuestResponse();
187
188	void setDefAction(uint32_t a) { m_defAction = a; }
189	uint32_t defAction() const { return m_defAction; }
190
191	void setAllActions(uint32_t a) { m_allActions = a; }
192	uint32_t allActions() const { return m_allActions; }
193
194	void setFormat(const Utf8Str &strFormat) { m_strFormat = strFormat; }
195	Utf8Str format() const { return m_strFormat; }
196
197	int addData(void pvData, uint32_t cbData, uint32_t pcbCurSize);
198	void resetData();
199	void data(void *ppvData, uint32_t pcbData) const { ppvData = m_pvData; pcbData = m_cbData; }
200	bool hasData() const { return m_pvData != NULL; }
201
202	int setProgress(unsigned uPercentage, uint32_t uState, int rcOp = VINF_SUCCESS);
203	HRESULT resetProgress(const ComObjPtr<Guest>& pParent);
204	HRESULT queryProgressTo(IProgress **ppProgress);
205
206	private:
207	RTSEMEVENT m_EventSem;
208	uint32_t m_defAction;
209	uint32_t m_allActions;
210	Utf8Str m_strFormat;
211	void *m_pvData;
212	uint32_t m_cbData;
213
214	ComObjPtr<Guest> m_parent;
215	ComObjPtr<Progress> m_progress;
216	};
217
218	class GuestDnDPrivate
219	{
220	private:
221	/* todo: currently we only support one response. Maybe this needs to be extended at some time. */
222	GuestDnDPrivate(GuestDnD *q, const ComObjPtr<Guest>& pGuest)
223	: q_ptr(q)
224	, p(pGuest)
225	, m_pDnDResponse(new DnDGuestResponse(pGuest))
226	{}
227	~GuestDnDPrivate() { delete m_pDnDResponse; }
228
229	DnDGuestResponse *response() const { return m_pDnDResponse; }
230
231	void adjustCoords(ULONG uScreenId, ULONG puX, ULONG puY) const;
232	void hostCall(const char* psczFunction, uint32_t u32Function, uint32_t cParms, PVBOXHGCMSVCPARM paParms) const;
233
234	/* Static helper */
235	static RTCString toFormatString(ComSafeArrayIn(IN_BSTR, formats));
236	static void toFormatSafeArray(const RTCString &strFormats, ComSafeArrayOut(BSTR, formats));
237
238	static DragAndDropAction_T toMainAction(uint32_t uAction);
239	static void toMainActions(uint32_t uActions, ComSafeArrayOut(DragAndDropAction_T, actions));
240	static uint32_t toHGCMAction(DragAndDropAction_T action);
241	static void toHGCMActions(DragAndDropAction_T inDefAction, uint32_t pOutDefAction, ComSafeArrayIn(DragAndDropAction_T, inAllowedActions), uint32_t pOutAllowedActions);
242
243	/* Private q and parent pointer */
244	GuestDnD *q_ptr;
245	ComObjPtr<Guest> p;
246
247	/* Private helper members */
248	static const RTCList<RTCString> m_sstrAllowedMimeTypes;
249	DnDGuestResponse *m_pDnDResponse;
250
251	friend class GuestDnD;
252	};
253
254	/* What mime-types are supported by VirtualBox.
255	* Note: If you add something here, make sure you test it with all guest OS's!
256	*/
257	/* static */
258	const RTCList<RTCString> GuestDnDPrivate::m_sstrAllowedMimeTypes = RTCList<RTCString>()
259	/* Uri's */
260	<< "text/uri-list"
261	/* Text */
262	<< "text/plain;charset=utf-8"
263	<< "UTF8_STRING"
264	<< "text/plain"
265	<< "COMPOUND_TEXT"
266	<< "TEXT"
267	<< "STRING"
268	/* OpenOffice formates */
269	<< "application/x-openoffice-embed-source-xml;windows_formatname=\"Star Embed Source (XML)\""
270	<< "application/x-openoffice-drawing;windows_formatname=\"Drawing Format\"";
271
272	DnDGuestResponse::DnDGuestResponse(const ComObjPtr<Guest>& pGuest)
273	: m_EventSem(NIL_RTSEMEVENT)
274	, m_defAction(0)
275	, m_allActions(0)
276	, m_pvData(0)
277	, m_cbData(0)
278	, m_parent(pGuest)
279	{
280	int rc = RTSemEventCreate(&m_EventSem);
281	AssertRC(rc);
282	}
283
284	DnDGuestResponse::~DnDGuestResponse()
285	{
286	resetData();
287	int rc = RTSemEventDestroy(m_EventSem);
288	AssertRC(rc);
289	}
290
291	int DnDGuestResponse::notifyAboutGuestResponse()
292	{
293	return RTSemEventSignal(m_EventSem);
294	}
295
296	int DnDGuestResponse::waitForGuestResponse()
297	{
298	return RTSemEventWait(m_EventSem, 300);
299	}
300
301	int DnDGuestResponse::addData(void pvData, uint32_t cbData, uint32_t pcbCurSize)
302	{
303	int rc = VINF_SUCCESS;
304	m_pvData = RTMemRealloc(m_pvData, m_cbData + cbData);
305	if (m_pvData)
306	{
307	memcpy(&static_cast<uint8_t*>(m_pvData)[m_cbData], pvData, cbData);
308	m_cbData += cbData;
309	*pcbCurSize = m_cbData;
310	}
311	else
312	rc = VERR_NO_MEMORY;
313
314	return rc;
315	}
316
317	void DnDGuestResponse::resetData()
318	{
319	if (m_pvData)
320	{
321	RTMemFree(m_pvData);
322	m_pvData = NULL;
323	}
324	m_cbData = 0;
325	}
326
327	HRESULT DnDGuestResponse::resetProgress(const ComObjPtr<Guest>& pParent)
328	{
329	m_progress.setNull();
330	HRESULT rc = m_progress.createObject();
331	if (SUCCEEDED(rc))
332	{
333	rc = m_progress->init(static_cast<IGuest*>(pParent),
334	Bstr(pParent->tr("Dropping data")).raw(),
335	TRUE);
336	}
337	return rc;
338	}
339
340	int DnDGuestResponse::setProgress(unsigned uPercentage, uint32_t uState, int rcOp /* = VINF_SUCCESS */)
341	{
342	int vrc = VINF_SUCCESS;
343	HRESULT rc;
344	if (!m_progress.isNull())
345	{
346	BOOL fCompleted;
347	rc = m_progress->COMGETTER(Completed)(&fCompleted);
348	if (!fCompleted)
349	{
350	if (uState == DragAndDropSvc::DND_PROGRESS_ERROR)
351	rc = m_progress->notifyComplete(E_FAIL,
352	COM_IIDOF(IGuest),
353	m_parent->getComponentName(),
354	m_parent->tr("Guest error (%Rrc)"), rcOp);
355	else if (uState == DragAndDropSvc::DND_PROGRESS_CANCELLED)
356	rc = m_progress->notifyComplete(S_OK);
357	else
358	{
359	rc = m_progress->SetCurrentOperationProgress(uPercentage);
360	if ( uState == DragAndDropSvc::DND_PROGRESS_COMPLETE
361	\|\| uPercentage >= 100)
362	rc = m_progress->notifyComplete(S_OK);
363	}
364	}
365	BOOL fCanceled = FALSE;
366	rc = m_progress->COMGETTER(Canceled)(&fCanceled);
367	if (fCanceled)
368	vrc = VERR_CANCELLED;
369	}
370	return vrc;
371	}
372
373	HRESULT DnDGuestResponse::queryProgressTo(IProgress **ppProgress)
374	{
375	return m_progress.queryInterfaceTo(ppProgress);
376	}
377
378	void GuestDnDPrivate::adjustCoords(ULONG uScreenId, ULONG puX, ULONG puY) const
379	{
380	/* For multi-monitor support we need to add shift values to the coordinates
381	* (depending on the screen number). */
382	ComPtr<IDisplay> pDisplay;
383	HRESULT rc = p->mParent->COMGETTER(Display)(pDisplay.asOutParam());
384	if (FAILED(rc)) throw rc;
385	ComPtr<IFramebuffer> pFramebuffer;
386	LONG xShift, yShift;
387	rc = pDisplay->GetFramebuffer(uScreenId, pFramebuffer.asOutParam(), &xShift, &yShift);
388	if (FAILED(rc)) throw rc;
389	*puX += xShift;
390	*puY += yShift;
391	}
392
393	void GuestDnDPrivate::hostCall(const char* psczFunction, uint32_t u32Function, uint32_t cParms, PVBOXHGCMSVCPARM paParms) const
394	{
395	VMMDev *vmmDev = 0;
396	{
397	/* Make sure mParent is valid, so set the read lock while using.
398	* Do not keep this lock while doing the actual call, because in the meanwhile
399	* another thread could request a write lock which would be a bad idea ... */
400	AutoReadLock alock(p COMMA_LOCKVAL_SRC_POS);
401
402	/* Forward the information to the VMM device. */
403	AssertPtr(p->mParent);
404	vmmDev = p->mParent->getVMMDev();
405	}
406
407	if (!vmmDev)
408	throw p->setError(VBOX_E_VM_ERROR,
409	p->tr("VMM device is not available (is the VM running?)"));
410
411	LogFlowFunc(("hgcmHostCall msg=%s; numParms=%u\n", psczFunction, u32Function));
412	int vrc = vmmDev->hgcmHostCall("VBoxDragAndDropSvc",
413	u32Function,
414	cParms, paParms);
415	if (RT_FAILURE(vrc))
416	{
417	LogFlowFunc(("hgcmHostCall error: %Rrc\n", vrc));
418	throw p->setError(VBOX_E_VM_ERROR,
419	p->tr("hgcmHostCall failed (%Rrc)"), vrc);
420	}
421	}
422
423	/* static */
424	RTCString GuestDnDPrivate::toFormatString(ComSafeArrayIn(IN_BSTR, formats))
425	{
426	const RTCList<Utf8Str> formatList(ComSafeArrayInArg(formats));
427	RTCString strFormat;
428	for (size_t i = 0; i < formatList.size(); ++i)
429	{
430	const RTCString &f = formatList.at(i);
431	/* Only keep allowed format types. */
432	if (m_sstrAllowedMimeTypes.contains(f))
433	strFormat += f + "\r\n";
434	}
435	return strFormat;
436	}
437
438	/* static */
439	void GuestDnDPrivate::toFormatSafeArray(const RTCString &strFormats, ComSafeArrayOut(BSTR, formats))
440	{
441	RTCList<RTCString> list = strFormats.split("\r\n");
442	size_t i = 0;
443	while(i < list.size())
444	{
445	/* Only keep allowed format types. */
446	if (!m_sstrAllowedMimeTypes.contains(list.at(i)))
447	list.removeAt(i);
448	else
449	++i;
450	}
451	/* Create a safe array out of the cleaned list. */
452	com::SafeArray<BSTR> sfaFormats(list.size());
453	for (i = 0; i < list.size(); ++i)
454	{
455	const RTCString &f = list.at(i);
456	if (m_sstrAllowedMimeTypes.contains(f))
457	{
458	Bstr bstr(f);
459	bstr.detachTo(&sfaFormats[i]);
460	}
461	}
462	sfaFormats.detachTo(ComSafeArrayOutArg(formats));
463	}
464
465	/* static */
466	uint32_t GuestDnDPrivate::toHGCMAction(DragAndDropAction_T action)
467	{
468	uint32_t a = DND_IGNORE_ACTION;
469	switch (action)
470	{
471	case DragAndDropAction_Copy: a = DND_COPY_ACTION; break;
472	case DragAndDropAction_Move: a = DND_MOVE_ACTION; break;
473	case DragAndDropAction_Link: /* For now it doesn't seems useful to allow a link action between host & guest. Maybe later! */
474	case DragAndDropAction_Ignore: /* Ignored */ break;
475	default: AssertMsgFailed(("Action %u not recognized!\n", action)); break;
476	}
477	return a;
478	}
479
480	/* static */
481	void GuestDnDPrivate::toHGCMActions(DragAndDropAction_T inDefAction, uint32_t pOutDefAction, ComSafeArrayIn(DragAndDropAction_T, inAllowedActions), uint32_t pOutAllowedActions)
482	{
483	const com::SafeArray<DragAndDropAction_T> sfaInActions(ComSafeArrayInArg(inAllowedActions));
484
485	/* Defaults */
486	*pOutDefAction = toHGCMAction(inDefAction);;
487	*pOutAllowedActions = DND_IGNORE_ACTION;
488
489	/* First convert the allowed actions to a bit array. */
490	for (size_t i = 0; i < sfaInActions.size(); ++i)
491	*pOutAllowedActions \|= toHGCMAction(sfaInActions[i]);
492
493	/* Second check if the default action is a valid action and if not so try
494	* to find an allowed action. */
495	if (isDnDIgnoreAction(*pOutDefAction))
496	{
497	if (hasDnDCopyAction(*pOutAllowedActions))
498	*pOutDefAction = DND_COPY_ACTION;
499	else if (hasDnDMoveAction(*pOutAllowedActions))
500	*pOutDefAction = DND_MOVE_ACTION;
501	}
502	}
503
504	/* static */
505	DragAndDropAction_T GuestDnDPrivate::toMainAction(uint32_t uAction)
506	{
507	/* For now it doesn't seems useful to allow a link action between host & guest. Maybe later! */
508	return (isDnDCopyAction(uAction) ? (DragAndDropAction_T)DragAndDropAction_Copy :
509	isDnDMoveAction(uAction) ? (DragAndDropAction_T)DragAndDropAction_Move :
510	(DragAndDropAction_T)DragAndDropAction_Ignore);
511	}
512
513	/* static */
514	void GuestDnDPrivate::toMainActions(uint32_t uActions, ComSafeArrayOut(DragAndDropAction_T, actions))
515	{
516	/* For now it doesn't seems useful to allow a link action between host & guest. Maybe later! */
517	RTCList<DragAndDropAction_T> list;
518	if (hasDnDCopyAction(uActions))
519	list.append(DragAndDropAction_Copy);
520	if (hasDnDMoveAction(uActions))
521	list.append(DragAndDropAction_Move);
522
523	com::SafeArray<DragAndDropAction_T> sfaActions(list.size());
524	for (size_t i = 0; i < list.size(); ++i)
525	sfaActions[i] = list.at(i);
526	sfaActions.detachTo(ComSafeArrayOutArg(actions));
527	}
528
529	GuestDnD::GuestDnD(const ComObjPtr<Guest>& pGuest)
530	: d_ptr(new GuestDnDPrivate(this, pGuest))
531	{
532	}
533
534	GuestDnD::~GuestDnD()
535	{
536	delete d_ptr;
537	}
538
539	HRESULT GuestDnD::dragHGEnter(ULONG uScreenId, ULONG uX, ULONG uY, DragAndDropAction_T defaultAction, ComSafeArrayIn(DragAndDropAction_T, allowedActions), ComSafeArrayIn(IN_BSTR, formats), DragAndDropAction_T *pResultAction)
540	{
541	DPTR(GuestDnD);
542	const ComObjPtr<Guest> &p = d->p;
543
544	/* Default is ignoring */
545	*pResultAction = DragAndDropAction_Ignore;
546
547	/* Check & convert the drag & drop actions */
548	uint32_t uDefAction = 0;
549	uint32_t uAllowedActions = 0;
550	d->toHGCMActions(defaultAction, &uDefAction, ComSafeArrayInArg(allowedActions), &uAllowedActions);
551	/* If there is no usable action, ignore this request. */
552	if (isDnDIgnoreAction(uDefAction))
553	return S_OK;
554
555	/* Make a flat data string out of the mime-type list. */
556	RTCString strFormats = d->toFormatString(ComSafeArrayInArg(formats));
557	/* If there is no valid mime-type, ignore this request. */
558	if (strFormats.isEmpty())
559	return S_OK;
560
561	HRESULT rc = S_OK;
562
563	try
564	{
565	/* Adjust the coordinates in a multi-monitor setup. */
566	d->adjustCoords(uScreenId, &uX, &uY);
567
568	VBOXHGCMSVCPARM paParms[7];
569	int i = 0;
570	paParms[i++].setUInt32(uScreenId);
571	paParms[i++].setUInt32(uX);
572	paParms[i++].setUInt32(uY);
573	paParms[i++].setUInt32(uDefAction);
574	paParms[i++].setUInt32(uAllowedActions);
575	paParms[i++].setPointer((void*)strFormats.c_str(), strFormats.length() + 1);
576	paParms[i++].setUInt32(strFormats.length() + 1);
577
578	d->hostCall("HOST_DND_HG_EVT_ENTER",
579	DragAndDropSvc::HOST_DND_HG_EVT_ENTER,
580	i,
581	paParms);
582
583	DnDGuestResponse *pDnD = d->response();
584	/* This blocks until the request is answered (or timeout). */
585	if (pDnD->waitForGuestResponse() == VERR_TIMEOUT)
586	return S_OK;
587
588	/* Copy the response info */
589	*pResultAction = d->toMainAction(pDnD->defAction());
590	}
591	catch (HRESULT rc2)
592	{
593	rc = rc2;
594	}
595
596	return rc;
597	}
598
599	HRESULT GuestDnD::dragHGMove(ULONG uScreenId, ULONG uX, ULONG uY, DragAndDropAction_T defaultAction, ComSafeArrayIn(DragAndDropAction_T, allowedActions), ComSafeArrayIn(IN_BSTR, formats), DragAndDropAction_T *pResultAction)
600	{
601	DPTR(GuestDnD);
602	const ComObjPtr<Guest> &p = d->p;
603
604	/* Default is ignoring */
605	*pResultAction = DragAndDropAction_Ignore;
606
607	/* Check & convert the drag & drop actions */
608	uint32_t uDefAction = 0;
609	uint32_t uAllowedActions = 0;
610	d->toHGCMActions(defaultAction, &uDefAction, ComSafeArrayInArg(allowedActions), &uAllowedActions);
611	/* If there is no usable action, ignore this request. */
612	if (isDnDIgnoreAction(uDefAction))
613	return S_OK;
614
615	/* Make a flat data string out of the mime-type list. */
616	RTCString strFormats = d->toFormatString(ComSafeArrayInArg(formats));
617	/* If there is no valid mime-type, ignore this request. */
618	if (strFormats.isEmpty())
619	return S_OK;
620
621	HRESULT rc = S_OK;
622
623	try
624	{
625	/* Adjust the coordinates in a multi-monitor setup. */
626	d->adjustCoords(uScreenId, &uX, &uY);
627
628	VBOXHGCMSVCPARM paParms[7];
629	int i = 0;
630	paParms[i++].setUInt32(uScreenId);
631	paParms[i++].setUInt32(uX);
632	paParms[i++].setUInt32(uY);
633	paParms[i++].setUInt32(uDefAction);
634	paParms[i++].setUInt32(uAllowedActions);
635	paParms[i++].setPointer((void*)strFormats.c_str(), strFormats.length() + 1);
636	paParms[i++].setUInt32(strFormats.length() + 1);
637
638	d->hostCall("HOST_DND_HG_EVT_MOVE",
639	DragAndDropSvc::HOST_DND_HG_EVT_MOVE,
640	i,
641	paParms);
642
643	DnDGuestResponse *pDnD = d->response();
644	/* This blocks until the request is answered (or timeout). */
645	if (pDnD->waitForGuestResponse() == VERR_TIMEOUT)
646	return S_OK;
647
648	/* Copy the response info */
649	*pResultAction = d->toMainAction(pDnD->defAction());
650	}
651	catch (HRESULT rc2)
652	{
653	rc = rc2;
654	}
655
656	return rc;
657	}
658
659	HRESULT GuestDnD::dragHGLeave(ULONG uScreenId)
660	{
661	DPTR(GuestDnD);
662	const ComObjPtr<Guest> &p = d->p;
663
664	HRESULT rc = S_OK;
665
666	try
667	{
668	d->hostCall("HOST_DND_HG_EVT_LEAVE",
669	DragAndDropSvc::HOST_DND_HG_EVT_LEAVE,
670	0,
671	NULL);
672
673	DnDGuestResponse *pDnD = d->response();
674	/* This blocks until the request is answered (or timeout). */
675	pDnD->waitForGuestResponse();
676	}
677	catch (HRESULT rc2)
678	{
679	rc = rc2;
680	}
681
682	return rc;
683	}
684
685	HRESULT GuestDnD::dragHGDrop(ULONG uScreenId, ULONG uX, ULONG uY, DragAndDropAction_T defaultAction, ComSafeArrayIn(DragAndDropAction_T, allowedActions), ComSafeArrayIn(IN_BSTR, formats), BSTR pstrFormat, DragAndDropAction_T pResultAction)
686	{
687	DPTR(GuestDnD);
688	const ComObjPtr<Guest> &p = d->p;
689
690	/* Default is ignoring */
691	*pResultAction = DragAndDropAction_Ignore;
692
693	/* Check & convert the drag & drop actions */
694	uint32_t uDefAction = 0;
695	uint32_t uAllowedActions = 0;
696	d->toHGCMActions(defaultAction, &uDefAction, ComSafeArrayInArg(allowedActions), &uAllowedActions);
697	/* If there is no usable action, ignore this request. */
698	if (isDnDIgnoreAction(uDefAction))
699	return S_OK;
700
701	/* Make a flat data string out of the mime-type list. */
702	RTCString strFormats = d->toFormatString(ComSafeArrayInArg(formats));
703	/* If there is no valid mime-type, ignore this request. */
704	if (strFormats.isEmpty())
705	return S_OK;
706
707	HRESULT rc = S_OK;
708
709	try
710	{
711	/* Adjust the coordinates in a multi-monitor setup. */
712	d->adjustCoords(uScreenId, &uX, &uY);
713
714	VBOXHGCMSVCPARM paParms[7];
715	int i = 0;
716	paParms[i++].setUInt32(uScreenId);
717	paParms[i++].setUInt32(uX);
718	paParms[i++].setUInt32(uY);
719	paParms[i++].setUInt32(uDefAction);
720	paParms[i++].setUInt32(uAllowedActions);
721	paParms[i++].setPointer((void*)strFormats.c_str(), strFormats.length() + 1);
722	paParms[i++].setUInt32(strFormats.length() + 1);
723
724	d->hostCall("HOST_DND_HG_EVT_DROPPED",
725	DragAndDropSvc::HOST_DND_HG_EVT_DROPPED,
726	i,
727	paParms);
728
729	DnDGuestResponse *pDnD = d->response();
730	/* This blocks until the request is answered (or timeout). */
731	if (pDnD->waitForGuestResponse() == VERR_TIMEOUT)
732	return S_OK;
733
734	/* Copy the response info */
735	*pResultAction = d->toMainAction(pDnD->defAction());
736	Bstr(pDnD->format()).cloneTo(pstrFormat);
737	}
738	catch (HRESULT rc2)
739	{
740	rc = rc2;
741	}
742
743	return rc;
744	}
745
746	HRESULT GuestDnD::dragHGPutData(ULONG uScreenId, IN_BSTR bstrFormat, ComSafeArrayIn(BYTE, data), IProgress **ppProgress)
747	{
748	DPTR(GuestDnD);
749	const ComObjPtr<Guest> &p = d->p;
750
751	HRESULT rc = S_OK;
752
753	try
754	{
755	Utf8Str strFormat(bstrFormat);
756	com::SafeArray<BYTE> sfaData(ComSafeArrayInArg(data));
757
758	VBOXHGCMSVCPARM paParms[5];
759	int i = 0;
760	paParms[i++].setUInt32(uScreenId);
761	paParms[i++].setPointer((void*)strFormat.c_str(), (uint32_t)strFormat.length() + 1);
762	paParms[i++].setUInt32((uint32_t)strFormat.length() + 1);
763	paParms[i++].setPointer((void*)sfaData.raw(), (uint32_t)sfaData.size());
764	paParms[i++].setUInt32((uint32_t)sfaData.size());
765
766	DnDGuestResponse *pDnD = d->response();
767	/* Reset any old progress status. */
768	pDnD->resetProgress(p);
769
770	d->hostCall("HOST_DND_HG_SND_DATA",
771	DragAndDropSvc::HOST_DND_HG_SND_DATA,
772	i,
773	paParms);
774
775	/* Query the progress object to the caller. */
776	pDnD->queryProgressTo(ppProgress);
777	}
778	catch (HRESULT rc2)
779	{
780	rc = rc2;
781	}
782
783	return rc;
784	}
785
786	# ifdef VBOX_WITH_DRAG_AND_DROP_GH
787	HRESULT GuestDnD::dragGHPending(ULONG uScreenId, ComSafeArrayOut(BSTR, formats), ComSafeArrayOut(DragAndDropAction_T, allowedActions), DragAndDropAction_T *pDefaultAction)
788	{
789	DPTR(GuestDnD);
790	const ComObjPtr<Guest> &p = d->p;
791
792	/* Default is ignoring */
793	*pDefaultAction = DragAndDropAction_Ignore;
794
795	HRESULT rc = S_OK;
796
797	try
798	{
799	VBOXHGCMSVCPARM paParms[1];
800	int i = 0;
801	paParms[i++].setUInt32(uScreenId);
802
803	d->hostCall("HOST_DND_GH_REQ_PENDING",
804	DragAndDropSvc::HOST_DND_GH_REQ_PENDING,
805	i,
806	paParms);
807
808	DnDGuestResponse *pDnD = d->response();
809	/* This blocks until the request is answered (or timeout). */
810	if (pDnD->waitForGuestResponse() == VERR_TIMEOUT)
811	return S_OK;
812
813	if (isDnDIgnoreAction(pDnD->defAction()))
814	return S_OK;
815
816	/* Fetch the default action to use. */
817	*pDefaultAction = d->toMainAction(pDnD->defAction());
818	/* Convert the formats strings to a vector of strings. */
819	d->toFormatSafeArray(pDnD->format(), ComSafeArrayOutArg(formats));
820	/* Convert the action bit field to a vector of actions. */
821	d->toMainActions(pDnD->allActions(), ComSafeArrayOutArg(allowedActions));
822	}
823	catch (HRESULT rc2)
824	{
825	rc = rc2;
826	}
827
828	return rc;
829	}
830
831	HRESULT GuestDnD::dragGHDropped(IN_BSTR bstrFormat, DragAndDropAction_T action, IProgress **ppProgress)
832	{
833	DPTR(GuestDnD);
834	const ComObjPtr<Guest> &p = d->p;
835
836	Utf8Str strFormat(bstrFormat);
837	HRESULT rc = S_OK;
838
839	uint32_t uAction = d->toHGCMAction(action);
840	/* If there is no usable action, ignore this request. */
841	if (isDnDIgnoreAction(uAction))
842	return S_OK;
843
844	try
845	{
846	VBOXHGCMSVCPARM paParms[3];
847	int i = 0;
848	paParms[i++].setPointer((void*)strFormat.c_str(), (uint32_t)strFormat.length() + 1);
849	paParms[i++].setUInt32((uint32_t)strFormat.length() + 1);
850	paParms[i++].setUInt32(uAction);
851
852	DnDGuestResponse *pDnD = d->response();
853	/* Reset any old data and the progress status. */
854	pDnD->resetData();
855	pDnD->resetProgress(p);
856
857	d->hostCall("HOST_DND_GH_EVT_DROPPED",
858	DragAndDropSvc::HOST_DND_GH_EVT_DROPPED,
859	i,
860	paParms);
861
862	/* Query the progress object to the caller. */
863	pDnD->queryProgressTo(ppProgress);
864	}
865	catch (HRESULT rc2)
866	{
867	rc = rc2;
868	}
869
870	return rc;
871	}
872
873	HRESULT GuestDnD::dragGHGetData(ComSafeArrayOut(BYTE, data))
874	{
875	DPTR(GuestDnD);
876	const ComObjPtr<Guest> &p = d->p;
877
878	HRESULT rc = S_OK;
879
880	DnDGuestResponse *pDnD = d->response();
881	/* Is there data at all? */
882	if (pDnD->hasData())
883	{
884	/* Copy the data into an safe array of bytes. */
885	void *pvData = 0;
886	uint32_t cbData = 0;
887	pDnD->data(&pvData, &cbData);
888	com::SafeArray<BYTE> sfaData(cbData);
889	memcpy(sfaData.raw(), pvData, cbData);
890	sfaData.detachTo(ComSafeArrayOutArg(data));
891	/* Delete the data. */
892	pDnD->resetData();
893	}
894	else
895	rc = VBOX_E_INVALID_OBJECT_STATE;
896
897	return rc;
898	}
899
900	# endif /* VBOX_WITH_DRAG_AND_DROP_GH */
901
902	DECLCALLBACK(int) GuestDnD::notifyGuestDragAndDropEvent(void pvExtension, uint32_t u32Function, void pvParms, uint32_t cbParms)
903	{
904	ComObjPtr<Guest> pGuest = reinterpret_cast<Guest*>(pvExtension);
905	if (!pGuest->m_pGuestDnD)
906	return VINF_SUCCESS;
907
908	GuestDnDPrivate d = static_cast<GuestDnDPrivate>(pGuest->m_pGuestDnD->d_ptr);
909	const ComObjPtr<Guest> &p = d->p;
910
911	DnDGuestResponse *pDnD = d->response();
912	if (pDnD == NULL)
913	return VERR_INVALID_PARAMETER;
914
915	int rc = VINF_SUCCESS;
916	switch (u32Function)
917	{
918	case DragAndDropSvc::GUEST_DND_HG_ACK_OP:
919	{
920	DragAndDropSvc::PVBOXDNDCBHGACKOPDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGACKOPDATA>(pvParms);
921	AssertPtr(pCBData);
922	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGACKOPDATA) == cbParms, VERR_INVALID_PARAMETER);
923	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_ACK_OP == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
924	pDnD->setDefAction(pCBData->uAction);
925	rc = pDnD->notifyAboutGuestResponse();
926	break;
927	}
928	case DragAndDropSvc::GUEST_DND_HG_REQ_DATA:
929	{
930	DragAndDropSvc::PVBOXDNDCBHGREQDATADATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGREQDATADATA>(pvParms);
931	AssertPtr(pCBData);
932	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGREQDATADATA) == cbParms, VERR_INVALID_PARAMETER);
933	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_REQ_DATA == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
934	pDnD->setFormat(pCBData->pszFormat);
935	rc = pDnD->notifyAboutGuestResponse();
936	break;
937	}
938	case DragAndDropSvc::GUEST_DND_HG_EVT_PROGRESS:
939	{
940	DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBHGEVTPROGRESSDATA>(pvParms);
941	AssertPtr(pCBData);
942	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBHGEVTPROGRESSDATA) == cbParms, VERR_INVALID_PARAMETER);
943	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_HG_EVT_PROGRESS == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
944	rc = pDnD->setProgress(pCBData->uPercentage, pCBData->uState);
945	break;
946	}
947	#ifdef VBOX_WITH_DRAG_AND_DROP_GH
948	case DragAndDropSvc::GUEST_DND_GH_ACK_PENDING:
949	{
950	DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBGHACKPENDINGDATA>(pvParms);
951	AssertPtr(pCBData);
952	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBGHACKPENDINGDATA) == cbParms, VERR_INVALID_PARAMETER);
953	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_GH_ACK_PENDING == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
954	pDnD->setFormat(pCBData->pszFormat);
955	pDnD->setDefAction(pCBData->uDefAction);
956	pDnD->setAllActions(pCBData->uAllActions);
957	rc = pDnD->notifyAboutGuestResponse();
958	break;
959	}
960	case DragAndDropSvc::GUEST_DND_GH_SND_DATA:
961	{
962	DragAndDropSvc::PVBOXDNDCBSNDDATADATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBSNDDATADATA>(pvParms);
963	AssertPtr(pCBData);
964	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBSNDDATADATA) == cbParms, VERR_INVALID_PARAMETER);
965	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_GH_SND_DATA == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
966	uint32_t cbCurSize = 0;
967	pDnD->addData(pCBData->pvData, pCBData->cbData, &cbCurSize);
968	rc = pDnD->setProgress(100.0 / pCBData->cbAllSize * cbCurSize, (pCBData->cbAllSize == cbCurSize ? DragAndDropSvc::DND_PROGRESS_COMPLETE : DragAndDropSvc::DND_PROGRESS_RUNNING));
969	/* Todo: for now we instantly confirm the cancel. Check if the
970	* guest should first clean up stuff itself and than really confirm
971	* the cancel request by an extra message. */
972	if (rc == VERR_CANCELLED)
973	pDnD->setProgress(100, DragAndDropSvc::DND_PROGRESS_CANCELLED);
974	break;
975	}
976	case DragAndDropSvc::GUEST_DND_GH_EVT_ERROR:
977	{
978	DragAndDropSvc::PVBOXDNDCBEVTERRORDATA pCBData = reinterpret_cast<DragAndDropSvc::PVBOXDNDCBEVTERRORDATA>(pvParms);
979	AssertPtr(pCBData);
980	AssertReturn(sizeof(DragAndDropSvc::VBOXDNDCBEVTERRORDATA) == cbParms, VERR_INVALID_PARAMETER);
981	AssertReturn(DragAndDropSvc::CB_MAGIC_DND_GH_EVT_ERROR == pCBData->hdr.u32Magic, VERR_INVALID_PARAMETER);
982	/* Cleanup */
983	pDnD->resetData();
984	rc = pDnD->setProgress(100, DragAndDropSvc::DND_PROGRESS_ERROR, pCBData->rc);
985	break;
986	}
987	#endif /* VBOX_WITH_DRAG_AND_DROP_GH */
988	default: AssertMsgFailedReturn(("Function %u not recognized!\n", u32Function), VERR_INVALID_PARAMETER); break;
989	}
990
991	return rc;
992	}
993
994	#endif /* VBOX_WITH_DRAG_AND_DROP */
995

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source: vbox/trunk/src/VBox/Main/src-client/GuestDnDImpl.cpp@ 42546

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