GuestDnDTargetImpl.cpp@ 98100

Last change on this file since 98100 was 97802, checked in by vboxsync, 2 years ago
DnD/Main: Made the progress object description a bit more flexible, to also know which operation currently is going on.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 63.3 KB

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1	/* $Id: GuestDnDTargetImpl.cpp 97802 2022-12-14 14:58:10Z vboxsync $ */
2	/** @file
3	* VBox Console COM Class implementation - Guest drag'n drop target.
4	*/
5
6	/*
7	* Copyright (C) 2014-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_GUEST_DND //LOG_GROUP_MAIN_GUESTDNDTARGET
33	#include "LoggingNew.h"
34
35	#include "GuestImpl.h"
36	#include "GuestDnDTargetImpl.h"
37	#include "ConsoleImpl.h"
38
39	#include "Global.h"
40	#include "AutoCaller.h"
41	#include "ThreadTask.h"
42
43	#include <algorithm> /* For std::find(). */
44
45	#include <iprt/asm.h>
46	#include <iprt/file.h>
47	#include <iprt/dir.h>
48	#include <iprt/path.h>
49	#include <iprt/uri.h>
50	#include <iprt/cpp/utils.h> /* For unconst(). */
51
52	#include <VBox/com/array.h>
53
54	#include <VBox/GuestHost/DragAndDrop.h>
55	#include <VBox/HostServices/Service.h>
56
57
58	/**
59	* Base class for a target task.
60	*/
61	class GuestDnDTargetTask : public ThreadTask
62	{
63	public:
64
65	GuestDnDTargetTask(GuestDnDTarget *pTarget)
66	: ThreadTask("GenericGuestDnDTargetTask")
67	, mTarget(pTarget)
68	, mRC(VINF_SUCCESS) { }
69
70	virtual ~GuestDnDTargetTask(void) { }
71
72	/** Returns the overall result of the task. */
73	int getRC(void) const { return mRC; }
74	/** Returns if the overall result of the task is ok (succeeded) or not. */
75	bool isOk(void) const { return RT_SUCCESS(mRC); }
76
77	protected:
78
79	/** COM object pointer to the parent (source). */
80	const ComObjPtr<GuestDnDTarget> mTarget;
81	/** Overall result of the task. */
82	int mRC;
83	};
84
85	/**
86	* Task structure for sending data to a target using
87	* a worker thread.
88	*/
89	class GuestDnDSendDataTask : public GuestDnDTargetTask
90	{
91	public:
92
93	GuestDnDSendDataTask(GuestDnDTarget pTarget, GuestDnDSendCtx pCtx)
94	: GuestDnDTargetTask(pTarget),
95	mpCtx(pCtx)
96	{
97	m_strTaskName = "dndTgtSndData";
98	}
99
100	void handler()
101	{
102	const ComObjPtr<GuestDnDTarget> pThis(mTarget);
103	Assert(!pThis.isNull());
104
105	AutoCaller autoCaller(pThis);
106	if (autoCaller.isNotOk())
107	return;
108
109	/* ignore rc / pThis->i_sendData(mpCtx, RT_INDEFINITE_WAIT / msTimeout */);
110	}
111
112	virtual ~GuestDnDSendDataTask(void) { }
113
114	protected:
115
116	/** Pointer to send data context. */
117	GuestDnDSendCtx *mpCtx;
118	};
119
120	// constructor / destructor
121	/////////////////////////////////////////////////////////////////////////////
122
123	GuestDnDTarget::GuestDnDTarget(void)
124	: GuestDnDBase(this) { }
125
126	GuestDnDTarget::~GuestDnDTarget(void) { }
127
128	HRESULT GuestDnDTarget::FinalConstruct(void)
129	{
130	/* Set the maximum block size our guests can handle to 64K. This always has
131	* been hardcoded until now. */
132	/* Note: Never ever rely on information from the guest; the host dictates what and
133	* how to do something, so try to negogiate a sensible value here later. */
134	mData.mcbBlockSize = DND_DEFAULT_CHUNK_SIZE; /** @todo Make this configurable. */
135
136	LogFlowThisFunc(("\n"));
137	return BaseFinalConstruct();
138	}
139
140	void GuestDnDTarget::FinalRelease(void)
141	{
142	LogFlowThisFuncEnter();
143	uninit();
144	BaseFinalRelease();
145	LogFlowThisFuncLeave();
146	}
147
148	// public initializer/uninitializer for internal purposes only
149	/////////////////////////////////////////////////////////////////////////////
150
151	HRESULT GuestDnDTarget::init(const ComObjPtr<Guest>& pGuest)
152	{
153	LogFlowThisFuncEnter();
154
155	/* Enclose the state transition NotReady->InInit->Ready. */
156	AutoInitSpan autoInitSpan(this);
157	AssertReturn(autoInitSpan.isOk(), E_FAIL);
158
159	unconst(m_pGuest) = pGuest;
160
161	/* Set the response we're going to use for this object.
162	*
163	* At the moment we only have one response total, as we
164	* don't allow
165	* 1) parallel transfers (multiple G->H at the same time)
166	* nor 2) mixed transfers (G->H + H->G at the same time).
167	*/
168	m_pState = GuestDnDInst()->getState();
169	AssertPtrReturn(m_pState, E_POINTER);
170
171	/* Confirm a successful initialization when it's the case. */
172	autoInitSpan.setSucceeded();
173
174	return S_OK;
175	}
176
177	/**
178	* Uninitializes the instance.
179	* Called from FinalRelease().
180	*/
181	void GuestDnDTarget::uninit(void)
182	{
183	LogFlowThisFunc(("\n"));
184
185	/* Enclose the state transition Ready->InUninit->NotReady. */
186	AutoUninitSpan autoUninitSpan(this);
187	if (autoUninitSpan.uninitDone())
188	return;
189	}
190
191	// implementation of wrapped IDnDBase methods.
192	/////////////////////////////////////////////////////////////////////////////
193
194	HRESULT GuestDnDTarget::isFormatSupported(const com::Utf8Str &aFormat, BOOL *aSupported)
195	{
196	#if !defined(VBOX_WITH_DRAG_AND_DROP)
197	ReturnComNotImplemented();
198	#else /* VBOX_WITH_DRAG_AND_DROP */
199
200	AutoCaller autoCaller(this);
201	if (autoCaller.isNotOk()) return autoCaller.rc();
202
203	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
204
205	*aSupported = GuestDnDBase::i_isFormatSupported(aFormat) ? TRUE : FALSE;
206
207	return S_OK;
208	#endif /* VBOX_WITH_DRAG_AND_DROP */
209	}
210
211	HRESULT GuestDnDTarget::getFormats(GuestDnDMIMEList &aFormats)
212	{
213	#if !defined(VBOX_WITH_DRAG_AND_DROP)
214	ReturnComNotImplemented();
215	#else /* VBOX_WITH_DRAG_AND_DROP */
216
217	AutoCaller autoCaller(this);
218	if (autoCaller.isNotOk()) return autoCaller.rc();
219
220	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
221
222	aFormats = GuestDnDBase::i_getFormats();
223
224	return S_OK;
225	#endif /* VBOX_WITH_DRAG_AND_DROP */
226	}
227
228	HRESULT GuestDnDTarget::addFormats(const GuestDnDMIMEList &aFormats)
229	{
230	#if !defined(VBOX_WITH_DRAG_AND_DROP)
231	ReturnComNotImplemented();
232	#else /* VBOX_WITH_DRAG_AND_DROP */
233
234	AutoCaller autoCaller(this);
235	if (autoCaller.isNotOk()) return autoCaller.rc();
236
237	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
238
239	return GuestDnDBase::i_addFormats(aFormats);
240	#endif /* VBOX_WITH_DRAG_AND_DROP */
241	}
242
243	HRESULT GuestDnDTarget::removeFormats(const GuestDnDMIMEList &aFormats)
244	{
245	#if !defined(VBOX_WITH_DRAG_AND_DROP)
246	ReturnComNotImplemented();
247	#else /* VBOX_WITH_DRAG_AND_DROP */
248
249	AutoCaller autoCaller(this);
250	if (autoCaller.isNotOk()) return autoCaller.rc();
251
252	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
253
254	return GuestDnDBase::i_removeFormats(aFormats);
255	#endif /* VBOX_WITH_DRAG_AND_DROP */
256	}
257
258	// implementation of wrapped IDnDTarget methods.
259	/////////////////////////////////////////////////////////////////////////////
260
261	HRESULT GuestDnDTarget::enter(ULONG aScreenId, ULONG aX, ULONG aY,
262	DnDAction_T aDefaultAction,
263	const std::vector<DnDAction_T> &aAllowedActions,
264	const GuestDnDMIMEList &aFormats,
265	DnDAction_T *aResultAction)
266	{
267	#if !defined(VBOX_WITH_DRAG_AND_DROP)
268	ReturnComNotImplemented();
269	#else /* VBOX_WITH_DRAG_AND_DROP */
270
271	/* Input validation. */
272	if (aDefaultAction == DnDAction_Ignore)
273	return setError(E_INVALIDARG, tr("No default action specified"));
274	if (!aAllowedActions.size())
275	return setError(E_INVALIDARG, tr("Number of allowed actions is empty"));
276	if (!aFormats.size())
277	return setError(E_INVALIDARG, tr("Number of supported formats is empty"));
278
279	AutoCaller autoCaller(this);
280	if (autoCaller.isNotOk()) return autoCaller.rc();
281
282	/* Default action is ignoring. */
283	DnDAction_T resAction = DnDAction_Ignore;
284
285	/* Check & convert the drag & drop actions. */
286	VBOXDNDACTION dndActionDefault = 0;
287	VBOXDNDACTIONLIST dndActionListAllowed = 0;
288	GuestDnD::toHGCMActions(aDefaultAction, &dndActionDefault,
289	aAllowedActions, &dndActionListAllowed);
290
291	/* If there is no usable action, ignore this request. */
292	if (isDnDIgnoreAction(dndActionDefault))
293	return S_OK;
294
295	GuestDnDState *pState = GuestDnDInst()->getState();
296	AssertPtrReturn(pState, E_POINTER);
297
298	/*
299	* Make a flat data string out of the supported format list.
300	* In the GuestDnDTarget case the source formats are from the host,
301	* as GuestDnDTarget acts as a source for the guest.
302	*/
303	Utf8Str strFormats = GuestDnD::toFormatString(GuestDnD::toFilteredFormatList(m_lstFmtSupported, aFormats));
304	if (strFormats.isEmpty())
305	return setError(E_INVALIDARG, tr("No or not supported format(s) specified"));
306	const uint32_t cbFormats = (uint32_t)strFormats.length() + 1; /* Include terminating zero. */
307
308	LogRel2(("DnD: Offered formats to guest:\n"));
309	RTCList<RTCString> lstFormats = strFormats.split(DND_PATH_SEPARATOR_STR);
310	for (size_t i = 0; i < lstFormats.size(); i++)
311	LogRel2(("DnD: \t%s\n", lstFormats[i].c_str()));
312
313	/* Save the formats offered to the guest. This is needed to later
314	* decide what to do with the data when sending stuff to the guest. */
315	m_lstFmtOffered = aFormats;
316	Assert(m_lstFmtOffered.size());
317
318	/* Adjust the coordinates in a multi-monitor setup. */
319	HRESULT hrc = GuestDnDInst()->adjustScreenCoordinates(aScreenId, &aX, &aY);
320	if (SUCCEEDED(hrc))
321	{
322	GuestDnDMsg Msg;
323	Msg.setType(HOST_DND_FN_HG_EVT_ENTER);
324	if (m_pState->m_uProtocolVersion >= 3)
325	Msg.appendUInt32(0); /** @todo ContextID not used yet. */
326	Msg.appendUInt32(aScreenId);
327	Msg.appendUInt32(aX);
328	Msg.appendUInt32(aY);
329	Msg.appendUInt32(dndActionDefault);
330	Msg.appendUInt32(dndActionListAllowed);
331	Msg.appendPointer((void *)strFormats.c_str(), cbFormats);
332	Msg.appendUInt32(cbFormats);
333
334	int vrc = GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
335	if (RT_SUCCESS(vrc))
336	{
337	int vrcGuest;
338	if (RT_SUCCESS(vrc = pState->waitForGuestResponse(&vrcGuest)))
339	{
340	resAction = GuestDnD::toMainAction(m_pState->getActionDefault());
341
342	LogRel2(("DnD: Host enters the VM window at %RU32,%RU32 (screen %u, default action is '%s') -> guest reported back action '%s'\n",
343	aX, aY, aScreenId, DnDActionToStr(dndActionDefault), DnDActionToStr(resAction)));
344
345	pState->set(VBOXDNDSTATE_ENTERED);
346	}
347	else
348	hrc = i_setErrorAndReset(vrc == VERR_DND_GUEST_ERROR ? vrcGuest : vrc, tr("Entering VM window failed"));
349	}
350	else
351	{
352	switch (vrc)
353	{
354	case VERR_ACCESS_DENIED:
355	{
356	hrc = i_setErrorAndReset(tr("Drag and drop to guest not allowed. Select the right mode first"));
357	break;
358	}
359
360	case VERR_NOT_SUPPORTED:
361	{
362	hrc = i_setErrorAndReset(tr("Drag and drop to guest not possible -- either the guest OS does not support this, "
363	"or the Guest Additions are not installed"));
364	break;
365	}
366
367	default:
368	hrc = i_setErrorAndReset(vrc, tr("Entering VM window failed"));
369	break;
370	}
371	}
372	}
373
374	if (SUCCEEDED(hrc))
375	{
376	if (aResultAction)
377	*aResultAction = resAction;
378	}
379
380	LogFlowFunc(("hrc=%Rhrc, resAction=%ld\n", hrc, resAction));
381	return hrc;
382	#endif /* VBOX_WITH_DRAG_AND_DROP */
383	}
384
385	HRESULT GuestDnDTarget::move(ULONG aScreenId, ULONG aX, ULONG aY,
386	DnDAction_T aDefaultAction,
387	const std::vector<DnDAction_T> &aAllowedActions,
388	const GuestDnDMIMEList &aFormats,
389	DnDAction_T *aResultAction)
390	{
391	#if !defined(VBOX_WITH_DRAG_AND_DROP)
392	ReturnComNotImplemented();
393	#else /* VBOX_WITH_DRAG_AND_DROP */
394
395	/* Input validation. */
396
397	AutoCaller autoCaller(this);
398	if (autoCaller.isNotOk()) return autoCaller.rc();
399
400	/* Default action is ignoring. */
401	DnDAction_T resAction = DnDAction_Ignore;
402
403	/* Check & convert the drag & drop actions. */
404	VBOXDNDACTION dndActionDefault = 0;
405	VBOXDNDACTIONLIST dndActionListAllowed = 0;
406	GuestDnD::toHGCMActions(aDefaultAction, &dndActionDefault,
407	aAllowedActions, &dndActionListAllowed);
408
409	/* If there is no usable action, ignore this request. */
410	if (isDnDIgnoreAction(dndActionDefault))
411	return S_OK;
412
413	GuestDnDState *pState = GuestDnDInst()->getState();
414	AssertPtrReturn(pState, E_POINTER);
415
416	/*
417	* Make a flat data string out of the supported format list.
418	* In the GuestDnDTarget case the source formats are from the host,
419	* as GuestDnDTarget acts as a source for the guest.
420	*/
421	Utf8Str strFormats = GuestDnD::toFormatString(GuestDnD::toFilteredFormatList(m_lstFmtSupported, aFormats));
422	if (strFormats.isEmpty())
423	return setError(E_INVALIDARG, tr("No or not supported format(s) specified"));
424	const uint32_t cbFormats = (uint32_t)strFormats.length() + 1; /* Include terminating zero. */
425
426	HRESULT hrc = GuestDnDInst()->adjustScreenCoordinates(aScreenId, &aX, &aY);
427	if (SUCCEEDED(hrc))
428	{
429	GuestDnDMsg Msg;
430	Msg.setType(HOST_DND_FN_HG_EVT_MOVE);
431	if (m_pState->m_uProtocolVersion >= 3)
432	Msg.appendUInt32(0); /** @todo ContextID not used yet. */
433	Msg.appendUInt32(aScreenId);
434	Msg.appendUInt32(aX);
435	Msg.appendUInt32(aY);
436	Msg.appendUInt32(dndActionDefault);
437	Msg.appendUInt32(dndActionListAllowed);
438	Msg.appendPointer((void *)strFormats.c_str(), cbFormats);
439	Msg.appendUInt32(cbFormats);
440
441	int vrc = GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
442	if (RT_SUCCESS(vrc))
443	{
444	int vrcGuest;
445	if (RT_SUCCESS(vrc = pState->waitForGuestResponse(&vrcGuest)))
446	{
447	resAction = GuestDnD::toMainAction(pState->getActionDefault());
448
449	LogRel2(("DnD: Host moved to %RU32,%RU32 in VM window (screen %u, default action is '%s') -> guest reported back action '%s'\n",
450	aX, aY, aScreenId, DnDActionToStr(dndActionDefault), DnDActionToStr(resAction)));
451
452	pState->set(VBOXDNDSTATE_DRAGGING);
453	}
454	else
455	hrc = i_setErrorAndReset(vrc == VERR_DND_GUEST_ERROR ? vrcGuest : vrc,
456	tr("Moving to %RU32,%RU32 (screen %u) failed"), aX, aY, aScreenId);
457	}
458	else
459	{
460	switch (vrc)
461	{
462	case VERR_ACCESS_DENIED:
463	{
464	hrc = i_setErrorAndReset(tr("Moving in guest not allowed. Select the right mode first"));
465	break;
466	}
467
468	case VERR_NOT_SUPPORTED:
469	{
470	hrc = i_setErrorAndReset(tr("Moving in guest not possible -- either the guest OS does not support this, "
471	"or the Guest Additions are not installed"));
472	break;
473	}
474
475	default:
476	hrc = i_setErrorAndReset(vrc, tr("Moving in VM window failed"));
477	break;
478	}
479	}
480	}
481	else
482	hrc = i_setErrorAndReset(tr("Retrieving move coordinates failed"));
483
484	if (SUCCEEDED(hrc))
485	{
486	if (aResultAction)
487	*aResultAction = resAction;
488	}
489
490	LogFlowFunc(("hrc=%Rhrc, *pResultAction=%ld\n", hrc, resAction));
491	return hrc;
492	#endif /* VBOX_WITH_DRAG_AND_DROP */
493	}
494
495	HRESULT GuestDnDTarget::leave(ULONG uScreenId)
496	{
497	RT_NOREF(uScreenId);
498	#if !defined(VBOX_WITH_DRAG_AND_DROP)
499	ReturnComNotImplemented();
500	#else /* VBOX_WITH_DRAG_AND_DROP */
501
502	AutoCaller autoCaller(this);
503	if (autoCaller.isNotOk()) return autoCaller.rc();
504
505	GuestDnDState *pState = GuestDnDInst()->getState();
506	AssertPtrReturn(pState, E_POINTER);
507
508	if (pState->get() == VBOXDNDSTATE_DROP_STARTED)
509	return S_OK;
510
511	HRESULT hrc = S_OK;
512
513	LogRel2(("DnD: Host left the VM window (screen %u)\n", uScreenId));
514
515	GuestDnDMsg Msg;
516	Msg.setType(HOST_DND_FN_HG_EVT_LEAVE);
517	if (m_pState->m_uProtocolVersion >= 3)
518	Msg.appendUInt32(0); /** @todo ContextID not used yet. */
519
520	int vrc = GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
521	if (RT_SUCCESS(vrc))
522	{
523	int vrcGuest;
524	if (RT_SUCCESS(vrc = pState->waitForGuestResponse(&vrcGuest)))
525	{
526	pState->set(VBOXDNDSTATE_LEFT);
527	}
528	else
529	hrc = i_setErrorAndReset(vrc == VERR_DND_GUEST_ERROR ? vrcGuest : vrc, tr("Leaving VM window failed"));
530	}
531	else
532	{
533	switch (vrc)
534	{
535	case VERR_ACCESS_DENIED:
536	{
537	hrc = i_setErrorAndReset(tr("Leaving guest not allowed. Select the right mode first"));
538	break;
539	}
540
541	case VERR_NOT_SUPPORTED:
542	{
543	hrc = i_setErrorAndReset(tr("Leaving guest not possible -- either the guest OS does not support this, "
544	"or the Guest Additions are not installed"));
545	break;
546	}
547
548	default:
549	hrc = i_setErrorAndReset(vrc, tr("Leaving VM window failed"));
550	break;
551	}
552	}
553
554	LogFlowFunc(("hrc=%Rhrc\n", hrc));
555	return hrc;
556	#endif /* VBOX_WITH_DRAG_AND_DROP */
557	}
558
559	HRESULT GuestDnDTarget::drop(ULONG aScreenId, ULONG aX, ULONG aY,
560	DnDAction_T aDefaultAction,
561	const std::vector<DnDAction_T> &aAllowedActions,
562	const GuestDnDMIMEList &aFormats,
563	com::Utf8Str &aFormat,
564	DnDAction_T *aResultAction)
565	{
566	#if !defined(VBOX_WITH_DRAG_AND_DROP)
567	ReturnComNotImplemented();
568	#else /* VBOX_WITH_DRAG_AND_DROP */
569
570	if (aDefaultAction == DnDAction_Ignore)
571	return setError(E_INVALIDARG, tr("Invalid default action specified"));
572	if (!aAllowedActions.size())
573	return setError(E_INVALIDARG, tr("Invalid allowed actions specified"));
574	if (!aFormats.size())
575	return setError(E_INVALIDARG, tr("No drop format(s) specified"));
576	/* aResultAction is optional. */
577
578	AutoCaller autoCaller(this);
579	if (FAILED(autoCaller.rc())) return autoCaller.rc();
580
581	/* Default action is ignoring. */
582	DnDAction_T resAct = DnDAction_Ignore;
583	Utf8Str resFmt;
584
585	/* Check & convert the drag & drop actions to HGCM codes. */
586	VBOXDNDACTION dndActionDefault = VBOX_DND_ACTION_IGNORE;
587	VBOXDNDACTIONLIST dndActionListAllowed = 0;
588	GuestDnD::toHGCMActions(aDefaultAction, &dndActionDefault,
589	aAllowedActions, &dndActionListAllowed);
590
591	/* If there is no usable action, ignore this request. */
592	if (isDnDIgnoreAction(dndActionDefault))
593	{
594	aFormat = "";
595	if (aResultAction)
596	*aResultAction = DnDAction_Ignore;
597	return S_OK;
598	}
599
600	GuestDnDState *pState = GuestDnDInst()->getState();
601	AssertPtrReturn(pState, E_POINTER);
602
603	/*
604	* Make a flat data string out of the supported format list.
605	* In the GuestDnDTarget case the source formats are from the host,
606	* as GuestDnDTarget acts as a source for the guest.
607	*/
608	Utf8Str strFormats = GuestDnD::toFormatString(GuestDnD::toFilteredFormatList(m_lstFmtSupported, aFormats));
609	if (strFormats.isEmpty())
610	return setError(E_INVALIDARG, tr("No or not supported format(s) specified"));
611	const uint32_t cbFormats = (uint32_t)strFormats.length() + 1; /* Include terminating zero. */
612
613	/* Adjust the coordinates in a multi-monitor setup. */
614	HRESULT hrc = GuestDnDInst()->adjustScreenCoordinates(aScreenId, &aX, &aY);
615	if (SUCCEEDED(hrc))
616	{
617	GuestDnDMsg Msg;
618	Msg.setType(HOST_DND_FN_HG_EVT_DROPPED);
619	if (m_pState->m_uProtocolVersion >= 3)
620	Msg.appendUInt32(0); /** @todo ContextID not used yet. */
621	Msg.appendUInt32(aScreenId);
622	Msg.appendUInt32(aX);
623	Msg.appendUInt32(aY);
624	Msg.appendUInt32(dndActionDefault);
625	Msg.appendUInt32(dndActionListAllowed);
626	Msg.appendPointer((void*)strFormats.c_str(), cbFormats);
627	Msg.appendUInt32(cbFormats);
628
629	LogRel2(("DnD: Host drops at %RU32,%RU32 in VM window (screen %u, default action is '%s')\n",
630	aX, aY, aScreenId, DnDActionToStr(dndActionDefault)));
631
632	int vrc = GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
633	if (RT_SUCCESS(vrc))
634	{
635	int vrcGuest;
636	if (RT_SUCCESS(vrc = pState->waitForGuestResponse(&vrcGuest)))
637	{
638	resAct = GuestDnD::toMainAction(pState->getActionDefault());
639	if (resAct != DnDAction_Ignore) /* Does the guest accept a drop at the current position? */
640	{
641	GuestDnDMIMEList lstFormats = pState->formats();
642	if (lstFormats.size() == 1) /* Exactly one format to use specified? */
643	{
644	resFmt = lstFormats.at(0);
645
646	LogRel2(("DnD: Guest accepted drop in format '%s' (action %#x, %zu format(s))\n",
647	resFmt.c_str(), resAct, lstFormats.size()));
648
649	pState->set(VBOXDNDSTATE_DROP_STARTED);
650	}
651	else
652	{
653	if (lstFormats.size() == 0)
654	hrc = i_setErrorAndReset(VERR_DND_GUEST_ERROR, tr("Guest accepted drop, but did not specify the format"));
655	else
656	hrc = i_setErrorAndReset(VERR_DND_GUEST_ERROR, tr("Guest accepted drop, but returned more than one drop format (%zu formats)"),
657	lstFormats.size());
658	}
659	}
660	}
661	else
662	hrc = i_setErrorAndReset(vrc == VERR_DND_GUEST_ERROR ? vrcGuest : vrc, tr("Dropping into VM failed"));
663	}
664	else
665	hrc = i_setErrorAndReset(vrc, tr("Sending dropped event to guest failed"));
666	}
667	else
668	hrc = i_setErrorAndReset(hrc, tr("Retrieving drop coordinates failed"));
669
670	if (SUCCEEDED(hrc))
671	{
672	aFormat = resFmt;
673	if (aResultAction)
674	*aResultAction = resAct;
675	}
676
677	return hrc;
678	#endif /* VBOX_WITH_DRAG_AND_DROP */
679	}
680
681	/**
682	* Initiates a data transfer from the host to the guest.
683	*
684	* The source is the host, whereas the target is the guest.
685	*
686	* @return HRESULT
687	* @param aScreenId Screen ID where this data transfer was initiated from.
688	* @param aFormat Format of data to send. MIME-style.
689	* @param aData Actual data to send.
690	* @param aProgress Where to return the progress object on success.
691	*/
692	HRESULT GuestDnDTarget::sendData(ULONG aScreenId, const com::Utf8Str &aFormat, const std::vector<BYTE> &aData,
693	ComPtr<IProgress> &aProgress)
694	{
695	#if !defined(VBOX_WITH_DRAG_AND_DROP)
696	ReturnComNotImplemented();
697	#else /* VBOX_WITH_DRAG_AND_DROP */
698
699	AutoCaller autoCaller(this);
700	if (FAILED(autoCaller.rc())) return autoCaller.rc();
701
702	/* Input validation. */
703	if (RT_UNLIKELY((aFormat.c_str()) == NULL \|\| *(aFormat.c_str()) == '\0'))
704	return setError(E_INVALIDARG, tr("No data format specified"));
705	if (RT_UNLIKELY(!aData.size()))
706	return setError(E_INVALIDARG, tr("No data to send specified"));
707
708	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
709
710	/* Check if this object still is in a pending state and bail out if so. */
711	if (m_fIsPending)
712	return setError(E_FAIL, tr("Current drop operation to guest still in progress"));
713
714	/* At the moment we only support one transfer at a time. */
715	if (GuestDnDInst()->getTargetCount())
716	return setError(E_INVALIDARG, tr("Another drag and drop operation to the guest already is in progress"));
717
718	/* Reset progress object. */
719	GuestDnDState *pState = GuestDnDInst()->getState();
720	AssertPtr(pState);
721	HRESULT hr = pState->resetProgress(m_pGuest, tr("Dropping data to guest"));
722	if (FAILED(hr))
723	return hr;
724
725	GuestDnDSendDataTask *pTask = NULL;
726
727	try
728	{
729	mData.mSendCtx.reset();
730
731	mData.mSendCtx.pTarget = this;
732	mData.mSendCtx.pState = pState;
733	mData.mSendCtx.uScreenID = aScreenId;
734
735	mData.mSendCtx.Meta.strFmt = aFormat;
736	mData.mSendCtx.Meta.add(aData);
737
738	LogRel2(("DnD: Host sends data in format '%s'\n", aFormat.c_str()));
739
740	pTask = new GuestDnDSendDataTask(this, &mData.mSendCtx);
741	if (!pTask->isOk())
742	{
743	delete pTask;
744	LogRel(("DnD: Could not create SendDataTask object\n"));
745	throw hr = E_FAIL;
746	}
747
748	/* This function delete pTask in case of exceptions,
749	* so there is no need in the call of delete operator. */
750	hr = pTask->createThreadWithType(RTTHREADTYPE_MAIN_WORKER);
751	pTask = NULL; /* Note: pTask is now owned by the worker thread. */
752	}
753	catch (std::bad_alloc &)
754	{
755	hr = E_OUTOFMEMORY;
756	}
757	catch (...)
758	{
759	LogRel(("DnD: Could not create thread for data sending task\n"));
760	hr = E_FAIL;
761	}
762
763	if (SUCCEEDED(hr))
764	{
765	/* Register ourselves at the DnD manager. */
766	GuestDnDInst()->registerTarget(this);
767
768	/* Return progress to caller. */
769	hr = pState->queryProgressTo(aProgress.asOutParam());
770	ComAssertComRC(hr);
771	}
772	else
773	hr = i_setErrorAndReset(tr("Starting thread for GuestDnDTarget failed (%Rhrc)"), hr);
774
775	LogFlowFunc(("Returning hr=%Rhrc\n", hr));
776	return hr;
777	#endif /* VBOX_WITH_DRAG_AND_DROP */
778	}
779
780	/**
781	* Returns an error string from a guest DnD error.
782	*
783	* @returns Error string.
784	* @param guestRc Guest error to return error string for.
785	*/
786	/* static */
787	Utf8Str GuestDnDTarget::i_guestErrorToString(int guestRc)
788	{
789	Utf8Str strError;
790
791	switch (guestRc)
792	{
793	case VERR_ACCESS_DENIED:
794	strError += Utf8StrFmt(tr("For one or more guest files or directories selected for transferring to the host your guest "
795	"user does not have the appropriate access rights for. Please make sure that all selected "
796	"elements can be accessed and that your guest user has the appropriate rights"));
797	break;
798
799	case VERR_NOT_FOUND:
800	/* Should not happen due to file locking on the guest, but anyway ... */
801	strError += Utf8StrFmt(tr("One or more guest files or directories selected for transferring to the host were not"
802	"found on the guest anymore. This can be the case if the guest files were moved and/or"
803	"altered while the drag and drop operation was in progress"));
804	break;
805
806	case VERR_SHARING_VIOLATION:
807	strError += Utf8StrFmt(tr("One or more guest files or directories selected for transferring to the host were locked. "
808	"Please make sure that all selected elements can be accessed and that your guest user has "
809	"the appropriate rights"));
810	break;
811
812	case VERR_TIMEOUT:
813	strError += Utf8StrFmt(tr("The guest was not able to process the drag and drop data within time"));
814	break;
815
816	default:
817	strError += Utf8StrFmt(tr("Drag and drop error from guest (%Rrc)"), guestRc);
818	break;
819	}
820
821	return strError;
822	}
823
824	/**
825	* Returns an error string from a host DnD error.
826	*
827	* @returns Error string.
828	* @param hostRc Host error to return error string for.
829	*/
830	/* static */
831	Utf8Str GuestDnDTarget::i_hostErrorToString(int hostRc)
832	{
833	Utf8Str strError;
834
835	switch (hostRc)
836	{
837	case VERR_ACCESS_DENIED:
838	strError += Utf8StrFmt(tr("For one or more host files or directories selected for transferring to the guest your host "
839	"user does not have the appropriate access rights for. Please make sure that all selected "
840	"elements can be accessed and that your host user has the appropriate rights."));
841	break;
842
843	case VERR_NOT_FOUND:
844	/* Should not happen due to file locking on the host, but anyway ... */
845	strError += Utf8StrFmt(tr("One or more host files or directories selected for transferring to the host were not"
846	"found on the host anymore. This can be the case if the host files were moved and/or"
847	"altered while the drag and drop operation was in progress."));
848	break;
849
850	case VERR_SHARING_VIOLATION:
851	strError += Utf8StrFmt(tr("One or more host files or directories selected for transferring to the guest were locked. "
852	"Please make sure that all selected elements can be accessed and that your host user has "
853	"the appropriate rights."));
854	break;
855
856	default:
857	strError += Utf8StrFmt(tr("Drag and drop error from host (%Rrc)"), hostRc);
858	break;
859	}
860
861	return strError;
862	}
863
864	/**
865	* Resets all internal data and state.
866	*/
867	void GuestDnDTarget::i_reset(void)
868	{
869	LogRel2(("DnD: Target reset\n"));
870
871	mData.mSendCtx.reset();
872
873	m_fIsPending = false;
874
875	/* Unregister ourselves from the DnD manager. */
876	GuestDnDInst()->unregisterTarget(this);
877	}
878
879	/**
880	* Main function for sending DnD host data to the guest.
881	*
882	* @returns VBox status code.
883	* @param pCtx Send context to use.
884	* @param msTimeout Timeout (in ms) to wait for getting the data sent.
885	*/
886	int GuestDnDTarget::i_sendData(GuestDnDSendCtx *pCtx, RTMSINTERVAL msTimeout)
887	{
888	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
889
890	/* Don't allow receiving the actual data until our current transfer is complete. */
891	if (m_fIsPending)
892	return setError(E_FAIL, tr("Current drop operation to guest still in progress"));
893
894	/* Clear all remaining outgoing messages. */
895	m_DataBase.lstMsgOut.clear();
896
897	/**
898	* Do we need to build up a file tree?
899	* Note: The decision whether we need to build up a file tree and sending
900	* actual file data only depends on the actual formats offered by this target.
901	* If the guest does not want a transfer list ("text/uri-list") but text ("TEXT" and
902	* friends) instead, still send the data over to the guest -- the file as such still
903	* is needed on the guest in this case, as the guest then just wants a simple path
904	* instead of a transfer list (pointing to a file on the guest itself).
905	*
906	** @todo Support more than one format; add a format<->function handler concept. Later. */
907	int vrc;
908	const bool fHasURIList = std::find(m_lstFmtOffered.begin(),
909	m_lstFmtOffered.end(), "text/uri-list") != m_lstFmtOffered.end();
910	if (fHasURIList)
911	{
912	vrc = i_sendTransferData(pCtx, msTimeout);
913	}
914	else
915	{
916	vrc = i_sendRawData(pCtx, msTimeout);
917	}
918
919	GuestDnDState *pState = GuestDnDInst()->getState();
920	AssertPtrReturn(pState, E_POINTER);
921
922	if (RT_SUCCESS(vrc))
923	{
924	pState->set(VBOXDNDSTATE_DROP_ENDED);
925	}
926	else
927	{
928	if (vrc == VERR_CANCELLED)
929	{
930	LogRel(("DnD: Sending data to guest cancelled by the user\n"));
931	pState->set(VBOXDNDSTATE_CANCELLED);
932	}
933	else
934	{
935	LogRel(("DnD: Sending data to guest failed with %Rrc\n", vrc));
936	pState->set(VBOXDNDSTATE_ERROR);
937	}
938
939	/* Make sure to fire a cancel request to the guest side in any case to prevent any guest side hangs. */
940	sendCancel();
941	}
942
943	/* Reset state. */
944	i_reset();
945
946	LogFlowFuncLeaveRC(vrc);
947	return vrc;
948	}
949
950	/**
951	* Sends the common meta data body to the guest.
952	*
953	* @returns VBox status code.
954	* @param pCtx Send context to use.
955	*/
956	int GuestDnDTarget::i_sendMetaDataBody(GuestDnDSendCtx *pCtx)
957	{
958	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
959
960	uint8_t pvData = (uint8_t )pCtx->Meta.pvData;
961	size_t cbData = pCtx->Meta.cbData;
962
963	int vrc = VINF_SUCCESS;
964
965	const size_t cbFmt = pCtx->Meta.strFmt.length() + 1; /* Include terminator. */
966	const char *pcszFmt = pCtx->Meta.strFmt.c_str();
967
968	LogFlowFunc(("uProtoVer=%RU32, szFmt=%s, cbFmt=%RU32, cbData=%zu\n", m_pState->m_uProtocolVersion, pcszFmt, cbFmt, cbData));
969
970	LogRel2(("DnD: Sending meta data to guest as '%s' (%zu bytes)\n", pcszFmt, cbData));
971
972	#ifdef DEBUG
973	RTCList<RTCString> lstFilesURI = RTCString((char *)pvData, cbData).split(DND_PATH_SEPARATOR_STR);
974	LogFlowFunc(("lstFilesURI=%zu\n", lstFilesURI.size()));
975	for (size_t i = 0; i < lstFilesURI.size(); i++)
976	LogFlowFunc(("\t%s\n", lstFilesURI.at(i).c_str()));
977	#endif
978
979	uint8_t *pvChunk = pvData;
980	size_t cbChunk = RT_MIN(mData.mcbBlockSize, cbData);
981	while (cbData)
982	{
983	GuestDnDMsg Msg;
984	Msg.setType(HOST_DND_FN_HG_SND_DATA);
985
986	if (m_pState->m_uProtocolVersion < 3)
987	{
988	Msg.appendUInt32(pCtx->uScreenID); /* uScreenId */
989	Msg.appendPointer(unconst(pcszFmt), (uint32_t)cbFmt); /* pvFormat */
990	Msg.appendUInt32((uint32_t)cbFmt); /* cbFormat */
991	Msg.appendPointer(pvChunk, (uint32_t)cbChunk); /* pvData */
992	/* Fill in the current data block size to send.
993	* Note: Only supports uint32_t. */
994	Msg.appendUInt32((uint32_t)cbChunk); /* cbData */
995	}
996	else
997	{
998	Msg.appendUInt32(0); /** @todo ContextID not used yet. */
999	Msg.appendPointer(pvChunk, (uint32_t)cbChunk); /* pvData */
1000	Msg.appendUInt32((uint32_t)cbChunk); /* cbData */
1001	Msg.appendPointer(NULL, 0); /** @todo pvChecksum; not used yet. */
1002	Msg.appendUInt32(0); /** @todo cbChecksum; not used yet. */
1003	}
1004
1005	vrc = GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
1006	if (RT_FAILURE(vrc))
1007	break;
1008
1009	pvChunk += cbChunk;
1010	AssertBreakStmt(cbData >= cbChunk, VERR_BUFFER_UNDERFLOW);
1011	cbData -= cbChunk;
1012	}
1013
1014	if (RT_SUCCESS(vrc))
1015	{
1016	vrc = updateProgress(pCtx, pCtx->pState, (uint32_t)pCtx->Meta.cbData);
1017	AssertRC(vrc);
1018	}
1019
1020	LogFlowFuncLeaveRC(vrc);
1021	return vrc;
1022	}
1023
1024	/**
1025	* Sends the common meta data header to the guest.
1026	*
1027	* @returns VBox status code.
1028	* @param pCtx Send context to use.
1029	*/
1030	int GuestDnDTarget::i_sendMetaDataHeader(GuestDnDSendCtx *pCtx)
1031	{
1032	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1033
1034	if (m_pState->m_uProtocolVersion < 3) /* Protocol < v3 did not support this, skip. */
1035	return VINF_SUCCESS;
1036
1037	GuestDnDMsg Msg;
1038	Msg.setType(HOST_DND_FN_HG_SND_DATA_HDR);
1039
1040	LogRel2(("DnD: Sending meta data header to guest (%RU64 bytes total data, %RU32 bytes meta data, %RU64 objects)\n",
1041	pCtx->getTotalAnnounced(), pCtx->Meta.cbData, pCtx->Transfer.cObjToProcess));
1042
1043	Msg.appendUInt32(0); /** @todo uContext; not used yet. */
1044	Msg.appendUInt32(0); /** @todo uFlags; not used yet. */
1045	Msg.appendUInt32(pCtx->uScreenID); /* uScreen */
1046	Msg.appendUInt64(pCtx->getTotalAnnounced()); /* cbTotal */
1047	Msg.appendUInt32((uint32_t)pCtx->Meta.cbData); /* cbMeta*/
1048	Msg.appendPointer(unconst(pCtx->Meta.strFmt.c_str()), (uint32_t)pCtx->Meta.strFmt.length() + 1); /* pvMetaFmt */
1049	Msg.appendUInt32((uint32_t)pCtx->Meta.strFmt.length() + 1); /* cbMetaFmt */
1050	Msg.appendUInt64(pCtx->Transfer.cObjToProcess); /* cObjects */
1051	Msg.appendUInt32(0); /** @todo enmCompression; not used yet. */
1052	Msg.appendUInt32(0); /** @todo enmChecksumType; not used yet. */
1053	Msg.appendPointer(NULL, 0); /** @todo pvChecksum; not used yet. */
1054	Msg.appendUInt32(0); /** @todo cbChecksum; not used yet. */
1055
1056	int vrc = GuestDnDInst()->hostCall(Msg.getType(), Msg.getCount(), Msg.getParms());
1057
1058	LogFlowFuncLeaveRC(vrc);
1059	return vrc;
1060	}
1061
1062	/**
1063	* Sends a directory entry to the guest.
1064	*
1065	* @returns VBox status code.
1066	* @param pCtx Send context to use.
1067	* @param pObj Transfer object to send. Must be a directory.
1068	* @param pMsg Where to store the message to send.
1069	*/
1070	int GuestDnDTarget::i_sendDirectory(GuestDnDSendCtx pCtx, PDNDTRANSFEROBJECT pObj, GuestDnDMsg pMsg)
1071	{
1072	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1073	AssertPtrReturn(pMsg, VERR_INVALID_POINTER);
1074
1075	const char *pcszDstPath = DnDTransferObjectGetDestPath(pObj);
1076	AssertPtrReturn(pcszDstPath, VERR_INVALID_POINTER);
1077	const size_t cchPath = RTStrNLen(pcszDstPath, RTPATH_MAX); /* Note: Maximum is RTPATH_MAX on guest side. */
1078	AssertReturn(cchPath, VERR_INVALID_PARAMETER);
1079
1080	LogRel2(("DnD: Transferring host directory '%s' to guest\n", DnDTransferObjectGetSourcePath(pObj)));
1081
1082	pMsg->setType(HOST_DND_FN_HG_SND_DIR);
1083	if (m_pState->m_uProtocolVersion >= 3)
1084	pMsg->appendUInt32(0); /** @todo ContextID not used yet. */
1085	pMsg->appendString(pcszDstPath); /* path */
1086	pMsg->appendUInt32((uint32_t)(cchPath + 1)); /* path length, including terminator. */
1087	pMsg->appendUInt32(DnDTransferObjectGetMode(pObj)); /* mode */
1088
1089	return VINF_SUCCESS;
1090	}
1091
1092	/**
1093	* Sends a file to the guest.
1094	*
1095	* @returns VBox status code.
1096	* @param pCtx Send context to use.
1097	* @param pObj Transfer object to send. Must be a file.
1098	* @param pMsg Where to store the message to send.
1099	*/
1100	int GuestDnDTarget::i_sendFile(GuestDnDSendCtx *pCtx,
1101	PDNDTRANSFEROBJECT pObj, GuestDnDMsg *pMsg)
1102	{
1103	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1104	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
1105	AssertPtrReturn(pMsg, VERR_INVALID_POINTER);
1106
1107	const char *pcszSrcPath = DnDTransferObjectGetSourcePath(pObj);
1108	AssertPtrReturn(pcszSrcPath, VERR_INVALID_POINTER);
1109	const char *pcszDstPath = DnDTransferObjectGetDestPath(pObj);
1110	AssertPtrReturn(pcszDstPath, VERR_INVALID_POINTER);
1111
1112	int vrc = VINF_SUCCESS;
1113
1114	if (!DnDTransferObjectIsOpen(pObj))
1115	{
1116	LogRel2(("DnD: Opening host file '%s' for transferring to guest\n", pcszSrcPath));
1117
1118	vrc = DnDTransferObjectOpen(pObj, RTFILE_O_OPEN \| RTFILE_O_READ \| RTFILE_O_DENY_WRITE, 0 /* fMode */,
1119	DNDTRANSFEROBJECT_FLAGS_NONE);
1120	if (RT_FAILURE(vrc))
1121	LogRel(("DnD: Opening host file '%s' failed, rc=%Rrc\n", pcszSrcPath, vrc));
1122	}
1123
1124	if (RT_FAILURE(vrc))
1125	return vrc;
1126
1127	bool fSendData = false;
1128	if (RT_SUCCESS(vrc)) /** @todo r=aeichner Could save an identation level here as there is a error check above already... */
1129	{
1130	if (m_pState->m_uProtocolVersion >= 2)
1131	{
1132	if (!(pCtx->Transfer.fObjState & DND_OBJ_STATE_HAS_HDR))
1133	{
1134	const size_t cchDstPath = RTStrNLen(pcszDstPath, RTPATH_MAX);
1135	const size_t cbSize = DnDTransferObjectGetSize(pObj);
1136	const RTFMODE fMode = DnDTransferObjectGetMode(pObj);
1137
1138	/*
1139	* Since protocol v2 the file header and the actual file contents are
1140	* separate messages, so send the file header first.
1141	* The just registered callback will be called by the guest afterwards.
1142	*/
1143	pMsg->setType(HOST_DND_FN_HG_SND_FILE_HDR);
1144	pMsg->appendUInt32(0); /** @todo ContextID not used yet. */
1145	pMsg->appendString(pcszDstPath); /* pvName */
1146	pMsg->appendUInt32((uint32_t)(cchDstPath + 1)); /* cbName */
1147	pMsg->appendUInt32(0); /* uFlags */
1148	pMsg->appendUInt32(fMode); /* fMode */
1149	pMsg->appendUInt64(cbSize); /* uSize */
1150
1151	LogRel2(("DnD: Transferring host file '%s' to guest (as '%s', %zu bytes, mode %#x)\n",
1152	pcszSrcPath, pcszDstPath, cbSize, fMode));
1153
1154	/** @todo Set progress object title to current file being transferred? */
1155
1156	/* Update object state to reflect that we have sent the file header. */
1157	pCtx->Transfer.fObjState \|= DND_OBJ_STATE_HAS_HDR;
1158	}
1159	else
1160	{
1161	/* File header was sent, so only send the actual file data. */
1162	fSendData = true;
1163	}
1164	}
1165	else /* Protocol v1. */
1166	{
1167	/* Always send the file data, every time. */
1168	fSendData = true;
1169	}
1170	}
1171
1172	if ( RT_SUCCESS(vrc)
1173	&& fSendData)
1174	{
1175	vrc = i_sendFileData(pCtx, pObj, pMsg);
1176	}
1177
1178	if (RT_FAILURE(vrc))
1179	LogRel(("DnD: Sending host file '%s' to guest failed, rc=%Rrc\n", pcszSrcPath, vrc));
1180
1181	LogFlowFuncLeaveRC(vrc);
1182	return vrc;
1183	}
1184
1185	/**
1186	* Helper function to send actual file data to the guest.
1187	*
1188	* @returns VBox status code.
1189	* @param pCtx Send context to use.
1190	* @param pObj Transfer object to send. Must be a file.
1191	* @param pMsg Where to store the message to send.
1192	*/
1193	int GuestDnDTarget::i_sendFileData(GuestDnDSendCtx *pCtx,
1194	PDNDTRANSFEROBJECT pObj, GuestDnDMsg *pMsg)
1195	{
1196	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1197	AssertPtrReturn(pObj, VERR_INVALID_POINTER);
1198	AssertPtrReturn(pMsg, VERR_INVALID_POINTER);
1199
1200	AssertPtrReturn(pCtx->pState, VERR_WRONG_ORDER);
1201
1202	/** @todo Don't allow concurrent reads per context! */
1203
1204	/* Set the message type. */
1205	pMsg->setType(HOST_DND_FN_HG_SND_FILE_DATA);
1206
1207	const char *pcszSrcPath = DnDTransferObjectGetSourcePath(pObj);
1208	const char *pcszDstPath = DnDTransferObjectGetDestPath(pObj);
1209
1210	/* Protocol version 1 sends the file path every time with a new file chunk.
1211	* In protocol version 2 we only do this once with HOST_DND_FN_HG_SND_FILE_HDR. */
1212	if (m_pState->m_uProtocolVersion <= 1)
1213	{
1214	const size_t cchDstPath = RTStrNLen(pcszDstPath, RTPATH_MAX);
1215
1216	pMsg->appendString(pcszDstPath); /* pvName */
1217	pMsg->appendUInt32((uint32_t)cchDstPath + 1); /* cbName */
1218	}
1219	else if (m_pState->m_uProtocolVersion >= 2)
1220	{
1221	pMsg->appendUInt32(0); /** @todo ContextID not used yet. */
1222	}
1223
1224	void *pvBuf = pCtx->Transfer.pvScratchBuf;
1225	AssertPtr(pvBuf);
1226	size_t cbBuf = pCtx->Transfer.cbScratchBuf;
1227	Assert(cbBuf);
1228
1229	uint32_t cbRead;
1230
1231	int vrc = DnDTransferObjectRead(pObj, pvBuf, cbBuf, &cbRead);
1232	if (RT_SUCCESS(vrc))
1233	{
1234	LogFlowFunc(("cbBufe=%zu, cbRead=%RU32\n", cbBuf, cbRead));
1235
1236	if (m_pState->m_uProtocolVersion <= 1)
1237	{
1238	pMsg->appendPointer(pvBuf, cbRead); /* pvData */
1239	pMsg->appendUInt32(cbRead); /* cbData */
1240	pMsg->appendUInt32(DnDTransferObjectGetMode(pObj)); /* fMode */
1241	}
1242	else /* Protocol v2 and up. */
1243	{
1244	pMsg->appendPointer(pvBuf, cbRead); /* pvData */
1245	pMsg->appendUInt32(cbRead); /* cbData */
1246
1247	if (m_pState->m_uProtocolVersion >= 3)
1248	{
1249	/** @todo Calculate checksum. */
1250	pMsg->appendPointer(NULL, 0); /* pvChecksum */
1251	pMsg->appendUInt32(0); /* cbChecksum */
1252	}
1253	}
1254
1255	int vrc2 = updateProgress(pCtx, pCtx->pState, (uint32_t)cbRead);
1256	AssertRC(vrc2);
1257
1258	/* DnDTransferObjectRead() will return VINF_EOF if reading is complete. */
1259	if (vrc == VINF_EOF)
1260	vrc = VINF_SUCCESS;
1261
1262	if (DnDTransferObjectIsComplete(pObj)) /* Done reading? */
1263	LogRel2(("DnD: Transferring host file '%s' to guest complete\n", pcszSrcPath));
1264	}
1265	else
1266	LogRel(("DnD: Reading from host file '%s' failed, vrc=%Rrc\n", pcszSrcPath, vrc));
1267
1268	LogFlowFuncLeaveRC(vrc);
1269	return vrc;
1270	}
1271
1272	/**
1273	* Static HGCM service callback which handles sending transfer data to the guest.
1274	*
1275	* @returns VBox status code. Will get sent back to the host service.
1276	* @param uMsg HGCM message ID (function number).
1277	* @param pvParms Pointer to additional message data. Optional and can be NULL.
1278	* @param cbParms Size (in bytes) additional message data. Optional and can be 0.
1279	* @param pvUser User-supplied pointer on callback registration.
1280	*/
1281	/* static */
1282	DECLCALLBACK(int) GuestDnDTarget::i_sendTransferDataCallback(uint32_t uMsg, void pvParms, size_t cbParms, void pvUser)
1283	{
1284	GuestDnDSendCtx pCtx = (GuestDnDSendCtx )pvUser;
1285	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1286
1287	GuestDnDTarget *pThis = pCtx->pTarget;
1288	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
1289
1290	/* At the moment we only have one transfer list per transfer. */
1291	PDNDTRANSFERLIST pList = &pCtx->Transfer.List;
1292
1293	LogFlowFunc(("pThis=%p, pList=%p, uMsg=%RU32\n", pThis, pList, uMsg));
1294
1295	int vrc = VINF_SUCCESS;
1296	int vrcGuest = VINF_SUCCESS; /* Contains error code from guest in case of VERR_DND_GUEST_ERROR. */
1297	bool fNotify = false;
1298
1299	switch (uMsg)
1300	{
1301	case GUEST_DND_FN_CONNECT:
1302	/* Nothing to do here (yet). */
1303	break;
1304
1305	case GUEST_DND_FN_DISCONNECT:
1306	vrc = VERR_CANCELLED;
1307	break;
1308
1309	case GUEST_DND_FN_GET_NEXT_HOST_MSG:
1310	{
1311	PVBOXDNDCBHGGETNEXTHOSTMSG pCBData = reinterpret_cast<PVBOXDNDCBHGGETNEXTHOSTMSG>(pvParms);
1312	AssertPtr(pCBData);
1313	AssertReturn(sizeof(VBOXDNDCBHGGETNEXTHOSTMSG) == cbParms, VERR_INVALID_PARAMETER);
1314	AssertReturn(CB_MAGIC_DND_HG_GET_NEXT_HOST_MSG == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
1315
1316	try
1317	{
1318	GuestDnDMsg *pMsg = new GuestDnDMsg();
1319
1320	vrc = pThis->i_sendTransferListObject(pCtx, pList, pMsg);
1321	if (vrc == VINF_EOF) /* Transfer complete? */
1322	{
1323	LogFlowFunc(("Last transfer item processed, bailing out\n"));
1324	}
1325	else if (RT_SUCCESS(vrc))
1326	{
1327	vrc = pThis->msgQueueAdd(pMsg);
1328	if (RT_SUCCESS(vrc)) /* Return message type & required parameter count to the guest. */
1329	{
1330	LogFlowFunc(("GUEST_DND_FN_GET_NEXT_HOST_MSG -> %RU32 (%RU32 params)\n", pMsg->getType(), pMsg->getCount()));
1331	pCBData->uMsg = pMsg->getType();
1332	pCBData->cParms = pMsg->getCount();
1333	}
1334	}
1335
1336	if ( RT_FAILURE(vrc)
1337	\|\| vrc == VINF_EOF) /* Transfer complete? */
1338	{
1339	delete pMsg;
1340	pMsg = NULL;
1341	}
1342	}
1343	catch(std::bad_alloc & /e/)
1344	{
1345	vrc = VERR_NO_MEMORY;
1346	}
1347	break;
1348	}
1349	case GUEST_DND_FN_EVT_ERROR:
1350	{
1351	PVBOXDNDCBEVTERRORDATA pCBData = reinterpret_cast<PVBOXDNDCBEVTERRORDATA>(pvParms);
1352	AssertPtr(pCBData);
1353	AssertReturn(sizeof(VBOXDNDCBEVTERRORDATA) == cbParms, VERR_INVALID_PARAMETER);
1354	AssertReturn(CB_MAGIC_DND_EVT_ERROR == pCBData->hdr.uMagic, VERR_INVALID_PARAMETER);
1355
1356	pCtx->pState->reset();
1357
1358	if (RT_SUCCESS(pCBData->rc))
1359	{
1360	AssertMsgFailed(("Guest has sent an error event but did not specify an actual error code\n"));
1361	pCBData->rc = VERR_GENERAL_FAILURE; /* Make sure some error is set. */
1362	}
1363
1364	vrc = pCtx->pState->setProgress(100, DND_PROGRESS_ERROR, pCBData->rc,
1365	GuestDnDTarget::i_guestErrorToString(pCBData->rc));
1366	if (RT_SUCCESS(vrc))
1367	{
1368	vrc = VERR_DND_GUEST_ERROR;
1369	vrcGuest = pCBData->rc;
1370	}
1371	break;
1372	}
1373	case HOST_DND_FN_HG_SND_DIR:
1374	case HOST_DND_FN_HG_SND_FILE_HDR:
1375	case HOST_DND_FN_HG_SND_FILE_DATA:
1376	{
1377	PVBOXDNDCBHGGETNEXTHOSTMSGDATA pCBData
1378	= reinterpret_cast<PVBOXDNDCBHGGETNEXTHOSTMSGDATA>(pvParms);
1379	AssertPtr(pCBData);
1380	AssertReturn(sizeof(VBOXDNDCBHGGETNEXTHOSTMSGDATA) == cbParms, VERR_INVALID_PARAMETER);
1381
1382	LogFlowFunc(("pCBData->uMsg=%RU32, paParms=%p, cParms=%RU32\n", pCBData->uMsg, pCBData->paParms, pCBData->cParms));
1383
1384	GuestDnDMsg *pMsg = pThis->msgQueueGetNext();
1385	if (pMsg)
1386	{
1387	/*
1388	* Sanity checks.
1389	*/
1390	if ( pCBData->uMsg != uMsg
1391	\|\| pCBData->paParms == NULL
1392	\|\| pCBData->cParms != pMsg->getCount())
1393	{
1394	LogFlowFunc(("Current message does not match:\n"));
1395	LogFlowFunc(("\tCallback: uMsg=%RU32, cParms=%RU32, paParms=%p\n",
1396	pCBData->uMsg, pCBData->cParms, pCBData->paParms));
1397	LogFlowFunc(("\t Next: uMsg=%RU32, cParms=%RU32\n", pMsg->getType(), pMsg->getCount()));
1398
1399	/* Start over. */
1400	pThis->msgQueueClear();
1401
1402	vrc = VERR_INVALID_PARAMETER;
1403	}
1404
1405	if (RT_SUCCESS(vrc))
1406	{
1407	LogFlowFunc(("Returning uMsg=%RU32\n", uMsg));
1408	vrc = HGCM::Message::CopyParms(pCBData->paParms, pCBData->cParms, pMsg->getParms(), pMsg->getCount(),
1409	false /* fDeepCopy */);
1410	if (RT_SUCCESS(vrc))
1411	{
1412	pCBData->cParms = pMsg->getCount();
1413	pThis->msgQueueRemoveNext();
1414	}
1415	else
1416	LogFlowFunc(("Copying parameters failed with vrc=%Rrc\n", vrc));
1417	}
1418	}
1419	else
1420	vrc = VERR_NO_DATA;
1421
1422	LogFlowFunc(("Processing next message ended with vrc=%Rrc\n", vrc));
1423	break;
1424	}
1425	default:
1426	vrc = VERR_NOT_SUPPORTED;
1427	break;
1428	}
1429
1430	int vrcToGuest = VINF_SUCCESS; /* Status which will be sent back to the guest. */
1431
1432	/*
1433	* Resolve errors.
1434	*/
1435	switch (vrc)
1436	{
1437	case VINF_SUCCESS:
1438	break;
1439
1440	case VINF_EOF:
1441	{
1442	LogRel2(("DnD: Transfer to guest complete\n"));
1443
1444	/* Complete operation on host side. */
1445	fNotify = true;
1446
1447	/* The guest expects VERR_NO_DATA if the transfer is complete. */
1448	vrcToGuest = VERR_NO_DATA;
1449	break;
1450	}
1451
1452	case VERR_DND_GUEST_ERROR:
1453	{
1454	LogRel(("DnD: Guest reported error %Rrc, aborting transfer to guest\n", vrcGuest));
1455	break;
1456	}
1457
1458	case VERR_CANCELLED:
1459	{
1460	LogRel2(("DnD: Transfer to guest canceled\n"));
1461	vrcToGuest = VERR_CANCELLED; /* Also cancel on guest side. */
1462	break;
1463	}
1464
1465	default:
1466	{
1467	LogRel(("DnD: Host error %Rrc occurred, aborting transfer to guest\n", vrc));
1468	vrcToGuest = VERR_CANCELLED; /* Also cancel on guest side. */
1469	break;
1470	}
1471	}
1472
1473	if (RT_FAILURE(vrc))
1474	{
1475	/* Unregister this callback. */
1476	AssertPtr(pCtx->pState);
1477	int vrc2 = pCtx->pState->setCallback(uMsg, NULL /* PFNGUESTDNDCALLBACK */);
1478	AssertRC(vrc2);
1479
1480	/* Let the waiter(s) know. */
1481	fNotify = true;
1482	}
1483
1484	LogFlowFunc(("fNotify=%RTbool, vrc=%Rrc, vrcToGuest=%Rrc\n", fNotify, vrc, vrcToGuest));
1485
1486	if (fNotify)
1487	{
1488	int vrc2 = pCtx->EventCallback.Notify(vrc); /** @todo Also pass guest error back? */
1489	AssertRC(vrc2);
1490	}
1491
1492	LogFlowFuncLeaveRC(vrc);
1493	return vrcToGuest; /* Tell the guest. */
1494	}
1495
1496	/**
1497	* Main function for sending the actual transfer data (i.e. files + directories) to the guest.
1498	*
1499	* @returns VBox status code.
1500	* @param pCtx Send context to use.
1501	* @param msTimeout Timeout (in ms) to use for getting the data sent.
1502	*/
1503	int GuestDnDTarget::i_sendTransferData(GuestDnDSendCtx *pCtx, RTMSINTERVAL msTimeout)
1504	{
1505	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1506	AssertPtr(pCtx->pState);
1507
1508	#define REGISTER_CALLBACK(x) \
1509	do { \
1510	vrc = pCtx->pState->setCallback(x, i_sendTransferDataCallback, pCtx); \
1511	if (RT_FAILURE(vrc)) \
1512	return vrc; \
1513	} while (0)
1514
1515	#define UNREGISTER_CALLBACK(x) \
1516	do { \
1517	int vrc2 = pCtx->pState->setCallback(x, NULL); \
1518	AssertRC(vrc2); \
1519	} while (0)
1520
1521	int vrc = pCtx->Transfer.init(mData.mcbBlockSize);
1522	if (RT_FAILURE(vrc))
1523	return vrc;
1524
1525	vrc = pCtx->EventCallback.Reset();
1526	if (RT_FAILURE(vrc))
1527	return vrc;
1528
1529	/*
1530	* Register callbacks.
1531	*/
1532	/* Guest callbacks. */
1533	REGISTER_CALLBACK(GUEST_DND_FN_CONNECT);
1534	REGISTER_CALLBACK(GUEST_DND_FN_DISCONNECT);
1535	REGISTER_CALLBACK(GUEST_DND_FN_GET_NEXT_HOST_MSG);
1536	REGISTER_CALLBACK(GUEST_DND_FN_EVT_ERROR);
1537	/* Host callbacks. */
1538	REGISTER_CALLBACK(HOST_DND_FN_HG_SND_DIR);
1539	if (m_pState->m_uProtocolVersion >= 2)
1540	REGISTER_CALLBACK(HOST_DND_FN_HG_SND_FILE_HDR);
1541	REGISTER_CALLBACK(HOST_DND_FN_HG_SND_FILE_DATA);
1542
1543	do
1544	{
1545	/*
1546	* Extract transfer list from current meta data.
1547	*/
1548	vrc = DnDTransferListAppendPathsFromBuffer(&pCtx->Transfer.List, DNDTRANSFERLISTFMT_URI,
1549	(const char *)pCtx->Meta.pvData, pCtx->Meta.cbData, DND_PATH_SEPARATOR_STR,
1550	DNDTRANSFERLIST_FLAGS_RECURSIVE);
1551	if (RT_FAILURE(vrc))
1552	break;
1553
1554	/*
1555	* Update internal state to reflect everything we need to work with it.
1556	*/
1557	pCtx->cbExtra = DnDTransferListObjTotalBytes(&pCtx->Transfer.List);
1558	/* cbExtra can be 0, if all files are of 0 bytes size. */
1559	pCtx->Transfer.cObjToProcess = DnDTransferListObjCount(&pCtx->Transfer.List);
1560	AssertBreakStmt(pCtx->Transfer.cObjToProcess, vrc = VERR_INVALID_PARAMETER);
1561
1562	/* Update the meta data to have the current root transfer entries in the right shape. */
1563	if (DnDMIMEHasFileURLs(pCtx->Meta.strFmt.c_str(), RTSTR_MAX))
1564	{
1565	/* Save original format we're still going to use after updating the actual meta data. */
1566	Utf8Str strFmt = pCtx->Meta.strFmt;
1567
1568	/* Reset stale data. */
1569	pCtx->Meta.reset();
1570
1571	void *pvData;
1572	size_t cbData;
1573	#ifdef DEBUG
1574	vrc = DnDTransferListGetRootsEx(&pCtx->Transfer.List, DNDTRANSFERLISTFMT_URI, "" /* pcszPathBase */,
1575	"\n" /* pcszSeparator /, (char *)&pvData, &cbData);
1576	AssertRCReturn(vrc, vrc);
1577	LogFlowFunc(("URI data:\n%s", (char *)pvData));
1578	RTMemFree(pvData);
1579	cbData = 0;
1580	#endif
1581	vrc = DnDTransferListGetRoots(&pCtx->Transfer.List, DNDTRANSFERLISTFMT_URI,
1582	(char **)&pvData, &cbData);
1583	AssertRCReturn(vrc, vrc);
1584
1585	/* pCtx->Meta now owns the allocated data. */
1586	pCtx->Meta.strFmt = strFmt;
1587	pCtx->Meta.pvData = pvData;
1588	pCtx->Meta.cbData = cbData;
1589	pCtx->Meta.cbAllocated = cbData;
1590	pCtx->Meta.cbAnnounced = cbData;
1591	}
1592
1593	/*
1594	* The first message always is the data header. The meta data itself then follows
1595	* and only contains the root elements of a transfer list.
1596	*
1597	* After the meta data we generate the messages required to send the
1598	* file/directory data itself.
1599	*
1600	* Note: Protocol < v3 use the first data message to tell what's being sent.
1601	*/
1602
1603	/*
1604	* Send the data header first.
1605	*/
1606	if (m_pState->m_uProtocolVersion >= 3)
1607	vrc = i_sendMetaDataHeader(pCtx);
1608
1609	/*
1610	* Send the (meta) data body.
1611	*/
1612	if (RT_SUCCESS(vrc))
1613	vrc = i_sendMetaDataBody(pCtx);
1614
1615	if (RT_SUCCESS(vrc))
1616	{
1617	vrc = waitForEvent(&pCtx->EventCallback, pCtx->pState, msTimeout);
1618	if (RT_SUCCESS(vrc))
1619	pCtx->pState->setProgress(100, DND_PROGRESS_COMPLETE, VINF_SUCCESS);
1620	}
1621
1622	} while (0);
1623
1624	/*
1625	* Unregister callbacks.
1626	*/
1627	/* Guest callbacks. */
1628	UNREGISTER_CALLBACK(GUEST_DND_FN_CONNECT);
1629	UNREGISTER_CALLBACK(GUEST_DND_FN_DISCONNECT);
1630	UNREGISTER_CALLBACK(GUEST_DND_FN_GET_NEXT_HOST_MSG);
1631	UNREGISTER_CALLBACK(GUEST_DND_FN_EVT_ERROR);
1632	/* Host callbacks. */
1633	UNREGISTER_CALLBACK(HOST_DND_FN_HG_SND_DIR);
1634	if (m_pState->m_uProtocolVersion >= 2)
1635	UNREGISTER_CALLBACK(HOST_DND_FN_HG_SND_FILE_HDR);
1636	UNREGISTER_CALLBACK(HOST_DND_FN_HG_SND_FILE_DATA);
1637
1638	#undef REGISTER_CALLBACK
1639	#undef UNREGISTER_CALLBACK
1640
1641	if (RT_FAILURE(vrc))
1642	{
1643	if (vrc == VERR_CANCELLED) /* Transfer was cancelled by the host. */
1644	{
1645	/*
1646	* Now that we've cleaned up tell the guest side to cancel.
1647	* This does not imply we're waiting for the guest to react, as the
1648	* host side never must depend on anything from the guest.
1649	*/
1650	int vrc2 = sendCancel();
1651	AssertRC(vrc2);
1652
1653	LogRel2(("DnD: Sending transfer data to guest cancelled by user\n"));
1654
1655	vrc2 = pCtx->pState->setProgress(100, DND_PROGRESS_CANCELLED, VINF_SUCCESS);
1656	AssertRC(vrc2);
1657
1658	/* Cancelling is not an error, just set success here. */
1659	vrc = VINF_SUCCESS;
1660	}
1661	else if (vrc != VERR_DND_GUEST_ERROR) /* Guest-side error are already handled in the callback. */
1662	{
1663	LogRel(("DnD: Sending transfer data to guest failed with vrc=%Rrc\n", vrc));
1664	int vrc2 = pCtx->pState->setProgress(100, DND_PROGRESS_ERROR, vrc,
1665	GuestDnDTarget::i_hostErrorToString(vrc));
1666	AssertRC(vrc2);
1667	}
1668	}
1669
1670	LogFlowFuncLeaveRC(vrc);
1671	return vrc;
1672	}
1673
1674	/**
1675	* Sends the next object of a transfer list to the guest.
1676	*
1677	* @returns VBox status code. VINF_EOF if the transfer list is complete.
1678	* @param pCtx Send context to use.
1679	* @param pList Transfer list to use.
1680	* @param pMsg Message to store send data into.
1681	*/
1682	int GuestDnDTarget::i_sendTransferListObject(GuestDnDSendCtx pCtx, PDNDTRANSFERLIST pList, GuestDnDMsg pMsg)
1683	{
1684	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1685	AssertPtrReturn(pList, VERR_INVALID_POINTER);
1686	AssertPtrReturn(pMsg, VERR_INVALID_POINTER);
1687
1688	int vrc = updateProgress(pCtx, pCtx->pState);
1689	AssertRCReturn(vrc, vrc);
1690
1691	PDNDTRANSFEROBJECT pObj = DnDTransferListObjGetFirst(pList);
1692	if (!pObj) /* Transfer complete? */
1693	return VINF_EOF;
1694
1695	switch (DnDTransferObjectGetType(pObj))
1696	{
1697	case DNDTRANSFEROBJTYPE_DIRECTORY:
1698	vrc = i_sendDirectory(pCtx, pObj, pMsg);
1699	break;
1700
1701	case DNDTRANSFEROBJTYPE_FILE:
1702	vrc = i_sendFile(pCtx, pObj, pMsg);
1703	break;
1704
1705	default:
1706	AssertFailedStmt(vrc = VERR_NOT_SUPPORTED);
1707	break;
1708	}
1709
1710	if ( RT_SUCCESS(vrc)
1711	&& DnDTransferObjectIsComplete(pObj))
1712	{
1713	DnDTransferListObjRemove(pList, pObj);
1714	pObj = NULL;
1715
1716	AssertReturn(pCtx->Transfer.cObjProcessed + 1 <= pCtx->Transfer.cObjToProcess, VERR_WRONG_ORDER);
1717	pCtx->Transfer.cObjProcessed++;
1718
1719	pCtx->Transfer.fObjState = DND_OBJ_STATE_NONE;
1720	}
1721
1722	LogFlowFuncLeaveRC(vrc);
1723	return vrc;
1724	}
1725
1726	/**
1727	* Main function for sending raw data (e.g. text, RTF, ...) to the guest.
1728	*
1729	* @returns VBox status code.
1730	* @param pCtx Send context to use.
1731	* @param msTimeout Timeout (in ms) to use for getting the data sent.
1732	*/
1733	int GuestDnDTarget::i_sendRawData(GuestDnDSendCtx *pCtx, RTMSINTERVAL msTimeout)
1734	{
1735	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
1736	NOREF(msTimeout);
1737
1738	/** @todo At the moment we only allow sending up to 64K raw data.
1739	* For protocol v1+v2: Fix this by using HOST_DND_FN_HG_SND_MORE_DATA.
1740	* For protocol v3 : Send another HOST_DND_FN_HG_SND_DATA message. */
1741	if (!pCtx->Meta.cbData)
1742	return VINF_SUCCESS;
1743
1744	int vrc = i_sendMetaDataHeader(pCtx);
1745	if (RT_SUCCESS(vrc))
1746	vrc = i_sendMetaDataBody(pCtx);
1747
1748	int vrc2;
1749	if (RT_FAILURE(vrc))
1750	{
1751	LogRel(("DnD: Sending raw data to guest failed with vrc=%Rrc\n", vrc));
1752	vrc2 = pCtx->pState->setProgress(100 /* Percent */, DND_PROGRESS_ERROR, vrc,
1753	GuestDnDTarget::i_hostErrorToString(vrc));
1754	}
1755	else
1756	vrc2 = pCtx->pState->setProgress(100 /* Percent */, DND_PROGRESS_COMPLETE, vrc);
1757	AssertRC(vrc2);
1758
1759	LogFlowFuncLeaveRC(vrc);
1760	return vrc;
1761	}
1762
1763	/**
1764	* Cancels sending DnD data.
1765	*
1766	* @returns VBox status code.
1767	* @param aVeto Whether cancelling was vetoed or not.
1768	* Not implemented yet.
1769	*/
1770	HRESULT GuestDnDTarget::cancel(BOOL *aVeto)
1771	{
1772	#if !defined(VBOX_WITH_DRAG_AND_DROP)
1773	ReturnComNotImplemented();
1774	#else /* VBOX_WITH_DRAG_AND_DROP */
1775
1776	LogRel2(("DnD: Sending cancelling request to the guest ...\n"));
1777
1778	int vrc = GuestDnDBase::sendCancel();
1779
1780	if (aVeto)
1781	aVeto = FALSE; /* @todo Implement vetoing. */
1782
1783	HRESULT hrc = RT_SUCCESS(vrc) ? S_OK : VBOX_E_DND_ERROR;
1784
1785	LogFlowFunc(("hrc=%Rhrc\n", hrc));
1786	return hrc;
1787	#endif /* VBOX_WITH_DRAG_AND_DROP */
1788	}
1789

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source: vbox/trunk/src/VBox/Main/src-client/GuestDnDTargetImpl.cpp@ 98100

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