VBoxSharedClipboardSvc-win.cpp@ 91749

Last change on this file since 91749 was 91749, checked in by vboxsync, 3 years ago
VRDP: Shared Clipboard: delegate clipboard processing to VRDP service when remote RDP clients are connected, bugref:10117.
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1	/* $Id: VBoxSharedClipboardSvc-win.cpp 91749 2021-10-14 21:02:32Z vboxsync $ */
2	/** @file
3	* Shared Clipboard Service - Win32 host.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_SHARED_CLIPBOARD
23	#include <iprt/win/windows.h>
24
25	#include <VBox/HostServices/VBoxClipboardSvc.h>
26	#include <VBox/GuestHost/clipboard-helper.h>
27	#include <VBox/GuestHost/SharedClipboard-win.h>
28	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
29	# include <VBox/GuestHost/SharedClipboard-transfers.h>
30	#endif
31
32	#include <iprt/alloc.h>
33	#include <iprt/string.h>
34	#include <iprt/asm.h>
35	#include <iprt/assert.h>
36	#include <iprt/ldr.h>
37	#include <iprt/semaphore.h>
38	#include <iprt/thread.h>
39	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
40	# include <iprt/utf16.h>
41	#endif
42
43	#include <process.h>
44	#include <iprt/win/shlobj.h> /* Needed for shell objects. */
45
46	#include "VBoxSharedClipboardSvc-internal.h"
47	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
48	# include "VBoxSharedClipboardSvc-transfers.h"
49	#endif
50
51
52	/*********************************************************************************************************************************
53	* Internal Functions *
54	*********************************************************************************************************************************/
55	static int vboxClipboardSvcWinSyncInternal(PSHCLCONTEXT pCtx);
56
57	struct SHCLCONTEXT
58	{
59	/** Handle for window message handling thread. */
60	RTTHREAD hThread;
61	/** Structure for keeping and communicating with service client. */
62	PSHCLCLIENT pClient;
63	/** Windows-specific context data. */
64	SHCLWINCTX Win;
65	};
66
67
68	/** @todo Someone please explain the protocol wrt overflows... */
69	static int vboxClipboardSvcWinDataGet(uint32_t u32Format, const void *pvSrc, uint32_t cbSrc,
70	void pvDst, uint32_t cbDst, uint32_t pcbActualDst)
71	{
72	AssertPtrReturn(pvSrc, VERR_INVALID_POINTER);
73	AssertReturn (cbSrc, VERR_INVALID_PARAMETER);
74	AssertPtrReturn(pvDst, VERR_INVALID_POINTER);
75	AssertReturn (cbDst, VERR_INVALID_PARAMETER);
76	AssertPtrReturn(pcbActualDst, VERR_INVALID_POINTER);
77
78	LogFlowFunc(("cbSrc = %d, cbDst = %d\n", cbSrc, cbDst));
79
80	if ( u32Format == VBOX_SHCL_FMT_HTML
81	&& SharedClipboardWinIsCFHTML((const char *)pvSrc))
82	{
83	/** @todo r=bird: Why the double conversion? */
84	char *pszBuf = NULL;
85	uint32_t cbBuf = 0;
86	int rc = SharedClipboardWinConvertCFHTMLToMIME((const char *)pvSrc, cbSrc, &pszBuf, &cbBuf);
87	if (RT_SUCCESS(rc))
88	{
89	*pcbActualDst = cbBuf;
90	if (cbBuf > cbDst)
91	{
92	/* Do not copy data. The dst buffer is not enough. */
93	RTMemFree(pszBuf);
94	return VERR_BUFFER_OVERFLOW;
95	}
96	memcpy(pvDst, pszBuf, cbBuf);
97	RTMemFree(pszBuf);
98	}
99	else
100	*pcbActualDst = 0;
101	}
102	else
103	{
104	pcbActualDst = cbSrc; / Tell the caller how much space we need. */
105
106	if (cbSrc > cbDst)
107	return VERR_BUFFER_OVERFLOW;
108
109	memcpy(pvDst, pvSrc, cbSrc);
110	}
111
112	#ifdef LOG_ENABLED
113	ShClDbgDumpData(pvDst, cbSrc, u32Format);
114	#endif
115
116	return VINF_SUCCESS;
117	}
118
119	/**
120	* Sets (places) clipboard data into the Windows clipboard.
121	*
122	* @returns VBox status code.
123	* @param pCtx Shared Clipboard context to use.
124	* @param cfFormat Windows clipboard format to set data for.
125	* @param pvData Pointer to actual clipboard data to set.
126	* @param cbData Size (in bytes) of actual clipboard data to set.
127	* @note
128	*/
129	static int vboxClipboardSvcWinDataSet(PSHCLCONTEXT pCtx, UINT cfFormat, void *pvData, uint32_t cbData)
130	{
131	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
132	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
133	AssertReturn (cbData, VERR_INVALID_PARAMETER);
134
135	int rc = VINF_SUCCESS;
136
137	HANDLE hMem = GlobalAlloc(GMEM_DDESHARE \| GMEM_MOVEABLE, cbData);
138
139	LogFlowFunc(("hMem=%p\n", hMem));
140
141	if (hMem)
142	{
143	void *pMem = GlobalLock(hMem);
144
145	LogFlowFunc(("pMem=%p, GlobalSize=%zu\n", pMem, GlobalSize(hMem)));
146
147	if (pMem)
148	{
149	LogFlowFunc(("Setting data\n"));
150
151	memcpy(pMem, pvData, cbData);
152
153	/* The memory must be unlocked before inserting to the Clipboard. */
154	GlobalUnlock(hMem);
155
156	/* 'hMem' contains the host clipboard data.
157	* size is 'cb' and format is 'format'.
158	*/
159	HANDLE hClip = SetClipboardData(cfFormat, hMem);
160
161	LogFlowFunc(("hClip=%p\n", hClip));
162
163	if (hClip)
164	{
165	/* The hMem ownership has gone to the system. Nothing to do. */
166	}
167	else
168	rc = RTErrConvertFromWin32(GetLastError());
169	}
170	else
171	rc = VERR_ACCESS_DENIED;
172
173	GlobalFree(hMem);
174	}
175	else
176	rc = RTErrConvertFromWin32(GetLastError());
177
178	if (RT_FAILURE(rc))
179	LogRel(("Shared Clipboard: Setting clipboard data for Windows host failed with %Rrc\n", rc));
180
181	LogFlowFuncLeaveRC(rc);
182	return rc;
183	}
184
185	static int vboxClipboardSvcWinDataRead(PSHCLCONTEXT pCtx, UINT uFormat, void *ppvData, uint32_t pcbData)
186	{
187	SHCLFORMAT fFormat = SharedClipboardWinClipboardFormatToVBox(uFormat);
188	LogFlowFunc(("uFormat=%u -> uFmt=0x%x\n", uFormat, fFormat));
189
190	if (fFormat == VBOX_SHCL_FMT_NONE)
191	{
192	LogRel2(("Shared Clipboard: Windows format %u not supported, ignoring\n", uFormat));
193	return VERR_NOT_SUPPORTED;
194	}
195
196	SHCLEVENTID idEvent = 0;
197	int rc = ShClSvcGuestDataRequest(pCtx->pClient, fFormat, &idEvent);
198	if (RT_SUCCESS(rc))
199	{
200	PSHCLEVENTPAYLOAD pPayload;
201	rc = ShClEventWait(&pCtx->pClient->EventSrc, idEvent, 30 * 1000, &pPayload);
202	if (RT_SUCCESS(rc))
203	{
204	*ppvData = pPayload ? pPayload->pvData : NULL;
205	*pcbData = pPayload ? pPayload->cbData : 0;
206	}
207
208	ShClEventRelease(&pCtx->pClient->EventSrc, idEvent);
209	ShClEventUnregister(&pCtx->pClient->EventSrc, idEvent);
210	}
211
212	if (RT_FAILURE(rc))
213	LogRel(("Shared Clipboard: Reading guest clipboard data for Windows host failed with %Rrc\n", rc));
214
215	LogFlowFuncLeaveRC(rc);
216	return rc;
217	}
218
219	static LRESULT CALLBACK vboxClipboardSvcWinWndProcMain(PSHCLCONTEXT pCtx,
220	HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) RT_NOTHROW_DEF
221	{
222	AssertPtr(pCtx);
223
224	LRESULT lresultRc = 0;
225
226	const PSHCLWINCTX pWinCtx = &pCtx->Win;
227
228	switch (uMsg)
229	{
230	case WM_CLIPBOARDUPDATE:
231	{
232	LogFunc(("WM_CLIPBOARDUPDATE\n"));
233
234	int rc = RTCritSectEnter(&pWinCtx->CritSect);
235	if (RT_SUCCESS(rc))
236	{
237	const HWND hWndClipboardOwner = GetClipboardOwner();
238
239	LogFunc(("WM_CLIPBOARDUPDATE: hWndClipboardOwnerUs=%p, hWndNewClipboardOwner=%p\n",
240	pWinCtx->hWndClipboardOwnerUs, hWndClipboardOwner));
241
242	if (pWinCtx->hWndClipboardOwnerUs != hWndClipboardOwner)
243	{
244	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
245	AssertRC(rc2);
246
247	/* Clipboard was updated by another application, retrieve formats and report back. */
248	rc = vboxClipboardSvcWinSyncInternal(pCtx);
249	}
250	else
251	{
252	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
253	AssertRC(rc2);
254	}
255	}
256
257	if (RT_FAILURE(rc))
258	LogRel(("Shared Clipboard: WM_CLIPBOARDUPDATE failed with %Rrc\n", rc));
259
260	break;
261	}
262
263	case WM_CHANGECBCHAIN:
264	{
265	LogFunc(("WM_CHANGECBCHAIN\n"));
266	lresultRc = SharedClipboardWinHandleWMChangeCBChain(pWinCtx, hWnd, uMsg, wParam, lParam);
267	break;
268	}
269
270	case WM_DRAWCLIPBOARD:
271	{
272	LogFunc(("WM_DRAWCLIPBOARD\n"));
273
274	int rc = RTCritSectEnter(&pWinCtx->CritSect);
275	if (RT_SUCCESS(rc))
276	{
277	const HWND hWndClipboardOwner = GetClipboardOwner();
278
279	LogFunc(("WM_DRAWCLIPBOARD: hWndClipboardOwnerUs=%p, hWndNewClipboardOwner=%p\n",
280	pWinCtx->hWndClipboardOwnerUs, hWndClipboardOwner));
281
282	if (pWinCtx->hWndClipboardOwnerUs != hWndClipboardOwner)
283	{
284	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
285	AssertRC(rc2);
286
287	/* Clipboard was updated by another application, retrieve formats and report back. */
288	rc = vboxClipboardSvcWinSyncInternal(pCtx);
289	}
290	else
291	{
292	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
293	AssertRC(rc2);
294	}
295	}
296
297	lresultRc = SharedClipboardWinChainPassToNext(pWinCtx, uMsg, wParam, lParam);
298	break;
299	}
300
301	case WM_TIMER:
302	{
303	int rc = SharedClipboardWinHandleWMTimer(pWinCtx);
304	AssertRC(rc);
305
306	break;
307	}
308
309	case WM_RENDERFORMAT:
310	{
311	LogFunc(("WM_RENDERFORMAT\n"));
312
313	/* Insert the requested clipboard format data into the clipboard. */
314	const UINT uFormat = (UINT)wParam;
315	const SHCLFORMAT fFormat = SharedClipboardWinClipboardFormatToVBox(uFormat);
316	LogFunc(("WM_RENDERFORMAT: uFormat=%u -> fFormat=0x%x\n", uFormat, fFormat));
317
318	if ( fFormat == VBOX_SHCL_FMT_NONE
319	\|\| pCtx->pClient == NULL)
320	{
321	/* Unsupported clipboard format is requested. */
322	LogFunc(("WM_RENDERFORMAT unsupported format requested or client is not active\n"));
323	SharedClipboardWinClear();
324	}
325	else
326	{
327	void *pvData = NULL;
328	uint32_t cbData = 0;
329	int rc = vboxClipboardSvcWinDataRead(pCtx, uFormat, &pvData, &cbData);
330	if ( RT_SUCCESS(rc)
331	&& pvData
332	&& cbData)
333	{
334	rc = vboxClipboardSvcWinDataSet(pCtx, uFormat, pvData, cbData);
335
336	RTMemFree(pvData);
337	cbData = 0;
338	}
339
340	if (RT_FAILURE(rc))
341	SharedClipboardWinClear();
342	}
343
344	break;
345	}
346
347	case WM_RENDERALLFORMATS:
348	{
349	LogFunc(("WM_RENDERALLFORMATS\n"));
350
351	int rc = SharedClipboardWinHandleWMRenderAllFormats(pWinCtx, hWnd);
352	AssertRC(rc);
353
354	break;
355	}
356
357	case SHCL_WIN_WM_REPORT_FORMATS:
358	{
359	/* Announce available formats. Do not insert data -- will be inserted in WM_RENDERFORMAT (or via IDataObject). */
360	SHCLFORMATS fFormats = (uint32_t)lParam;
361	LogFunc(("SHCL_WIN_WM_REPORT_FORMATS: fFormats=%#xn", fFormats));
362
363	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
364	if (fFormats & VBOX_SHCL_FMT_URI_LIST)
365	{
366	PSHCLTRANSFER pTransfer;
367	int rc = shClSvcTransferStart(pCtx->pClient,
368	SHCLTRANSFERDIR_FROM_REMOTE, SHCLSOURCE_REMOTE,
369	&pTransfer);
370	if (RT_SUCCESS(rc))
371	{
372	/* Create the IDataObject implementation the host OS needs and assign
373	* the newly created transfer to this object. */
374	rc = SharedClipboardWinTransferCreate(&pCtx->Win, pTransfer);
375
376	/* Note: The actual requesting + retrieving of data will be done in the IDataObject implementation
377	(ClipboardDataObjectImpl::GetData()). */
378	}
379	else
380	LogRel(("Shared Clipboard: Initializing read transfer failed with %Rrc\n", rc));
381	}
382	else
383	{
384	#endif
385	int rc = SharedClipboardWinClearAndAnnounceFormats(pWinCtx, fFormats, hWnd);
386	if (RT_FAILURE(rc))
387	LogRel(("Shared Clipboard: Reporting clipboard formats %#x to Windows host failed with %Rrc\n", fFormats, rc));
388
389	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
390	}
391	#endif
392	LogFunc(("SHCL_WIN_WM_REPORT_FORMATS: lastErr=%ld\n", GetLastError()));
393	break;
394	}
395
396	case WM_DESTROY:
397	{
398	LogFunc(("WM_DESTROY\n"));
399
400	int rc = SharedClipboardWinHandleWMDestroy(pWinCtx);
401	AssertRC(rc);
402
403	PostQuitMessage(0);
404	break;
405	}
406
407	default:
408	lresultRc = DefWindowProc(hWnd, uMsg, wParam, lParam);
409	break;
410	}
411
412	LogFlowFunc(("LEAVE hWnd=%p, WM_ %u -> %#zx\n", hWnd, uMsg, lresultRc));
413	return lresultRc;
414	}
415
416	/**
417	* Static helper function for having a per-client proxy window instances.
418	*/
419	static LRESULT CALLBACK vboxClipboardSvcWinWndProcInstance(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) RT_NOTHROW_DEF
420	{
421	LONG_PTR pUserData = GetWindowLongPtr(hWnd, GWLP_USERDATA);
422	AssertPtrReturn(pUserData, 0);
423
424	PSHCLCONTEXT pCtx = reinterpret_cast<PSHCLCONTEXT>(pUserData);
425	if (pCtx)
426	return vboxClipboardSvcWinWndProcMain(pCtx, hWnd, uMsg, wParam, lParam);
427
428	return 0;
429	}
430
431	/**
432	* Static helper function for routing Windows messages to a specific
433	* proxy window instance.
434	*/
435	static LRESULT CALLBACK vboxClipboardSvcWinWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) RT_NOTHROW_DEF
436	{
437	/* Note: WM_NCCREATE is not the first ever message which arrives, but
438	* early enough for us. */
439	if (uMsg == WM_NCCREATE)
440	{
441	LogFlowFunc(("WM_NCCREATE\n"));
442
443	LPCREATESTRUCT pCS = (LPCREATESTRUCT)lParam;
444	AssertPtr(pCS);
445	SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)pCS->lpCreateParams);
446	SetWindowLongPtr(hWnd, GWLP_WNDPROC, (LONG_PTR)vboxClipboardSvcWinWndProcInstance);
447
448	return vboxClipboardSvcWinWndProcInstance(hWnd, uMsg, wParam, lParam);
449	}
450
451	/* No window associated yet. */
452	return DefWindowProc(hWnd, uMsg, wParam, lParam);
453	}
454
455	DECLCALLBACK(int) vboxClipboardSvcWinThread(RTTHREAD hThreadSelf, void *pvUser)
456	{
457	LogFlowFuncEnter();
458
459	bool fThreadSignalled = false;
460
461	const PSHCLCONTEXT pCtx = (PSHCLCONTEXT)pvUser;
462	AssertPtr(pCtx);
463	const PSHCLWINCTX pWinCtx = &pCtx->Win;
464
465	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
466
467	/* Register the Window Class. */
468	WNDCLASS wc;
469	RT_ZERO(wc);
470
471	wc.style = CS_NOCLOSE;
472	wc.lpfnWndProc = vboxClipboardSvcWinWndProc;
473	wc.hInstance = hInstance;
474	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
475
476	/* Register an unique wnd class name. */
477	char szWndClassName[32];
478	RTStrPrintf2(szWndClassName, sizeof(szWndClassName),
479	"%s-%RU64", SHCL_WIN_WNDCLASS_NAME, RTThreadGetNative(hThreadSelf));
480	wc.lpszClassName = szWndClassName;
481
482	int rc;
483
484	ATOM atomWindowClass = RegisterClass(&wc);
485	if (atomWindowClass == 0)
486	{
487	LogFunc(("Failed to register window class\n"));
488	rc = VERR_NOT_SUPPORTED;
489	}
490	else
491	{
492	/* Create a window and make it a clipboard viewer. */
493	pWinCtx->hWnd = CreateWindowEx(WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
494	szWndClassName, szWndClassName,
495	WS_POPUPWINDOW,
496	-200, -200, 100, 100, NULL, NULL, hInstance, pCtx /* lpParam */);
497	if (pWinCtx->hWnd == NULL)
498	{
499	LogFunc(("Failed to create window\n"));
500	rc = VERR_NOT_SUPPORTED;
501	}
502	else
503	{
504	SetWindowPos(pWinCtx->hWnd, HWND_TOPMOST, -200, -200, 0, 0,
505	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
506
507	rc = SharedClipboardWinChainAdd(&pCtx->Win);
508	if (RT_SUCCESS(rc))
509	{
510	if (!SharedClipboardWinIsNewAPI(&pWinCtx->newAPI))
511	pWinCtx->oldAPI.timerRefresh = SetTimer(pWinCtx->hWnd, 0, 10 * 1000, NULL);
512	}
513
514	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
515	if (RT_SUCCESS(rc))
516	{
517	HRESULT hr = OleInitialize(NULL);
518	if (FAILED(hr))
519	{
520	LogRel(("Shared Clipboard: Initializing window thread OLE failed (%Rhrc) -- file transfers unavailable\n", hr));
521	/* Not critical, the rest of the clipboard might work. */
522	}
523	else
524	LogRel(("Shared Clipboard: Initialized window thread OLE\n"));
525	}
526	#endif
527	int rc2 = RTThreadUserSignal(hThreadSelf);
528	AssertRC(rc2);
529
530	fThreadSignalled = true;
531
532	MSG msg;
533	BOOL msgret = 0;
534	while ((msgret = GetMessage(&msg, NULL, 0, 0)) > 0)
535	{
536	TranslateMessage(&msg);
537	DispatchMessage(&msg);
538	}
539
540	/*
541	* Window procedure can return error, * but this is exceptional situation that should be
542	* identified in testing.
543	*/
544	Assert(msgret >= 0);
545	LogFunc(("Message loop finished. GetMessage returned %d, message id: %d \n", msgret, msg.message));
546
547	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
548	OleSetClipboard(NULL); /* Make sure to flush the clipboard on destruction. */
549	OleUninitialize();
550	#endif
551	}
552	}
553
554	pWinCtx->hWnd = NULL;
555
556	if (atomWindowClass != 0)
557	{
558	UnregisterClass(szWndClassName, hInstance);
559	atomWindowClass = 0;
560	}
561
562	if (!fThreadSignalled)
563	{
564	int rc2 = RTThreadUserSignal(hThreadSelf);
565	AssertRC(rc2);
566	}
567
568	LogFlowFuncLeaveRC(rc);
569	return rc;
570	}
571
572	/**
573	* Synchronizes the host and the guest clipboard formats by sending all supported host clipboard
574	* formats to the guest.
575	*
576	* @returns VBox status code, VINF_NO_CHANGE if no synchronization was required.
577	* @param pCtx Clipboard context to synchronize.
578	*/
579	static int vboxClipboardSvcWinSyncInternal(PSHCLCONTEXT pCtx)
580	{
581	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
582
583	LogFlowFuncEnter();
584
585	int rc;
586
587	if (pCtx->pClient)
588	{
589	SHCLFORMATS fFormats = 0;
590	rc = SharedClipboardWinGetFormats(&pCtx->Win, &fFormats);
591	if ( RT_SUCCESS(rc)
592	&& fFormats != VBOX_SHCL_FMT_NONE /** @todo r=bird: BUGBUG: revisit this. */
593	&& ShClSvcIsBackendActive())
594	rc = ShClSvcHostReportFormats(pCtx->pClient, fFormats);
595	}
596	else /* If we don't have any client data (yet), bail out. */
597	rc = VINF_NO_CHANGE;
598
599	LogFlowFuncLeaveRC(rc);
600	return rc;
601	}
602
603	/*
604	* Public platform dependent functions.
605	*/
606
607	int ShClBackendInit(VBOXHGCMSVCFNTABLE *pTable)
608	{
609	RT_NOREF(pTable);
610	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
611	HRESULT hr = OleInitialize(NULL);
612	if (FAILED(hr))
613	{
614	LogRel(("Shared Clipboard: Initializing OLE failed (%Rhrc) -- file transfers unavailable\n", hr));
615	/* Not critical, the rest of the clipboard might work. */
616	}
617	else
618	LogRel(("Shared Clipboard: Initialized OLE\n"));
619	#endif
620
621	return VINF_SUCCESS;
622	}
623
624	void ShClBackendDestroy(void)
625	{
626	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
627	OleSetClipboard(NULL); /* Make sure to flush the clipboard on destruction. */
628	OleUninitialize();
629	#endif
630	}
631
632	int ShClBackendConnect(PSHCLCLIENT pClient, bool fHeadless)
633	{
634	RT_NOREF(fHeadless);
635
636	LogFlowFuncEnter();
637
638	int rc;
639
640	PSHCLCONTEXT pCtx = (PSHCLCONTEXT)RTMemAllocZ(sizeof(SHCLCONTEXT));
641	if (pCtx)
642	{
643	rc = SharedClipboardWinCtxInit(&pCtx->Win);
644	if (RT_SUCCESS(rc))
645	{
646	rc = RTThreadCreate(&pCtx->hThread, vboxClipboardSvcWinThread, pCtx /* pvUser /, _64K / Stack size */,
647	RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "SHCLIP");
648	if (RT_SUCCESS(rc))
649	{
650	int rc2 = RTThreadUserWait(pCtx->hThread, 30 * 1000 /* Timeout in ms */);
651	AssertRC(rc2);
652	}
653	}
654
655	pClient->State.pCtx = pCtx;
656	pClient->State.pCtx->pClient = pClient;
657	}
658	else
659	rc = VERR_NO_MEMORY;
660
661	LogFlowFuncLeaveRC(rc);
662	return rc;
663	}
664
665	int ShClBackendSync(PSHCLCLIENT pClient)
666	{
667	/* Sync the host clipboard content with the client. */
668	return vboxClipboardSvcWinSyncInternal(pClient->State.pCtx);
669	}
670
671	int ShClBackendDisconnect(PSHCLCLIENT pClient)
672	{
673	AssertPtrReturn(pClient, VERR_INVALID_POINTER);
674
675	LogFlowFuncEnter();
676
677	int rc = VINF_SUCCESS;
678
679	PSHCLCONTEXT pCtx = pClient->State.pCtx;
680	if (pCtx)
681	{
682	if (pCtx->Win.hWnd)
683	PostMessage(pCtx->Win.hWnd, WM_DESTROY, 0 /* wParam /, 0 / lParam */);
684
685	if (pCtx->hThread != NIL_RTTHREAD)
686	{
687	LogFunc(("Waiting for thread to terminate ...\n"));
688
689	/* Wait for the window thread to terminate. */
690	rc = RTThreadWait(pCtx->hThread, 30 * 1000 /* Timeout in ms */, NULL);
691	if (RT_FAILURE(rc))
692	LogRel(("Shared Clipboard: Waiting for window thread termination failed with rc=%Rrc\n", rc));
693
694	pCtx->hThread = NIL_RTTHREAD;
695	}
696
697	SharedClipboardWinCtxDestroy(&pCtx->Win);
698
699	if (RT_SUCCESS(rc))
700	{
701	RTMemFree(pCtx);
702	pCtx = NULL;
703
704	pClient->State.pCtx = NULL;
705	}
706	}
707
708	LogFlowFuncLeaveRC(rc);
709	return rc;
710	}
711
712	int ShClBackendFormatAnnounce(PSHCLCLIENT pClient, SHCLFORMATS fFormats)
713	{
714	AssertPtrReturn(pClient, VERR_INVALID_POINTER);
715
716	PSHCLCONTEXT pCtx = pClient->State.pCtx;
717	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
718
719	LogFlowFunc(("fFormats=0x%x, hWnd=%p\n", fFormats, pCtx->Win.hWnd));
720
721	/*
722	* The guest announced formats. Forward to the window thread.
723	*/
724	PostMessage(pCtx->Win.hWnd, SHCL_WIN_WM_REPORT_FORMATS,
725	0 /* wParam /, fFormats / lParam */);
726
727
728	LogFlowFuncLeaveRC(VINF_SUCCESS);
729	return VINF_SUCCESS;
730	}
731
732	int ShClBackendReadData(PSHCLCLIENT pClient, PSHCLCLIENTCMDCTX pCmdCtx,
733	SHCLFORMAT uFmt, void pvData, uint32_t cbData, uint32_t pcbActual)
734	{
735	AssertPtrReturn(pClient, VERR_INVALID_POINTER);
736	AssertPtrReturn(pCmdCtx, VERR_INVALID_POINTER);
737	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
738	AssertPtrReturn(pcbActual, VERR_INVALID_POINTER);
739
740	RT_NOREF(pCmdCtx);
741
742	AssertPtrReturn(pClient->State.pCtx, VERR_INVALID_POINTER);
743
744	LogFlowFunc(("uFmt=%#x\n", uFmt));
745
746	HANDLE hClip = NULL;
747
748	const PSHCLWINCTX pWinCtx = &pClient->State.pCtx->Win;
749
750	/*
751	* The guest wants to read data in the given format.
752	*/
753	int rc = SharedClipboardWinOpen(pWinCtx->hWnd);
754	if (RT_SUCCESS(rc))
755	{
756	if (uFmt & VBOX_SHCL_FMT_BITMAP)
757	{
758	LogFunc(("CF_DIB\n"));
759	hClip = GetClipboardData(CF_DIB);
760	if (hClip != NULL)
761	{
762	LPVOID lp = GlobalLock(hClip);
763	if (lp != NULL)
764	{
765	rc = vboxClipboardSvcWinDataGet(VBOX_SHCL_FMT_BITMAP, lp, GlobalSize(hClip),
766	pvData, cbData, pcbActual);
767	GlobalUnlock(hClip);
768	}
769	else
770	{
771	hClip = NULL;
772	}
773	}
774	}
775	else if (uFmt & VBOX_SHCL_FMT_UNICODETEXT)
776	{
777	LogFunc(("CF_UNICODETEXT\n"));
778	hClip = GetClipboardData(CF_UNICODETEXT);
779	if (hClip != NULL)
780	{
781	LPWSTR uniString = (LPWSTR)GlobalLock(hClip);
782	if (uniString != NULL)
783	{
784	rc = vboxClipboardSvcWinDataGet(VBOX_SHCL_FMT_UNICODETEXT, uniString, (lstrlenW(uniString) + 1) * 2,
785	pvData, cbData, pcbActual);
786	GlobalUnlock(hClip);
787	}
788	else
789	{
790	hClip = NULL;
791	}
792	}
793	}
794	else if (uFmt & VBOX_SHCL_FMT_HTML)
795	{
796	LogFunc(("SHCL_WIN_REGFMT_HTML\n"));
797	UINT uRegFmt = RegisterClipboardFormat(SHCL_WIN_REGFMT_HTML);
798	if (uRegFmt != 0)
799	{
800	hClip = GetClipboardData(uRegFmt);
801	if (hClip != NULL)
802	{
803	LPVOID lp = GlobalLock(hClip);
804	if (lp != NULL)
805	{
806	rc = vboxClipboardSvcWinDataGet(VBOX_SHCL_FMT_HTML, lp, GlobalSize(hClip),
807	pvData, cbData, pcbActual);
808	#ifdef LOG_ENABLED
809	if (RT_SUCCESS(rc))
810	{
811	LogFlowFunc(("Raw HTML clipboard data from host:\n"));
812	ShClDbgDumpHtml((char *)pvData, cbData);
813	}
814	#endif
815	GlobalUnlock(hClip);
816	}
817	else
818	{
819	hClip = NULL;
820	}
821	}
822	}
823	}
824	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
825	else if (uFmt & VBOX_SHCL_FMT_URI_LIST)
826	{
827	AssertFailed(); /** @todo */
828	}
829	#endif /* VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS */
830	SharedClipboardWinClose();
831	}
832
833	if (hClip == NULL) /* Empty data is not fatal. */
834	{
835	/* Reply with empty data. */
836	vboxClipboardSvcWinDataGet(0, NULL, 0, pvData, cbData, pcbActual);
837	}
838
839	if (RT_FAILURE(rc))
840	LogRel(("Shared Clipboard: Error reading host clipboard data in format %#x from Windows, rc=%Rrc\n", uFmt, rc));
841
842	LogFlowFuncLeaveRC(rc);
843	return rc;
844	}
845
846	int ShClBackendWriteData(PSHCLCLIENT pClient, PSHCLCLIENTCMDCTX pCmdCtx,
847	SHCLFORMAT uFormat, void *pvData, uint32_t cbData)
848	{
849	RT_NOREF(pClient, pCmdCtx, uFormat, pvData, cbData);
850
851	LogFlowFuncEnter();
852
853	/* Nothing to do here yet. */
854
855	LogFlowFuncLeave();
856	return VINF_SUCCESS;
857	}
858
859	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
860	int ShClBackendTransferCreate(PSHCLCLIENT pClient, PSHCLTRANSFER pTransfer)
861	{
862	RT_NOREF(pClient, pTransfer);
863
864	LogFlowFuncEnter();
865
866	return VINF_SUCCESS;
867	}
868
869	int ShClBackendTransferDestroy(PSHCLCLIENT pClient, PSHCLTRANSFER pTransfer)
870	{
871	LogFlowFuncEnter();
872
873	SharedClipboardWinTransferDestroy(&pClient->State.pCtx->Win, pTransfer);
874
875	return VINF_SUCCESS;
876	}
877
878	int ShClBackendTransferGetRoots(PSHCLCLIENT pClient, PSHCLTRANSFER pTransfer)
879	{
880	LogFlowFuncEnter();
881
882	const PSHCLWINCTX pWinCtx = &pClient->State.pCtx->Win;
883
884	int rc = SharedClipboardWinGetRoots(pWinCtx, pTransfer);
885
886	LogFlowFuncLeaveRC(rc);
887	return rc;
888	}
889	#endif /* VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS */
890

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source: vbox/trunk/src/VBox/HostServices/SharedClipboard/VBoxSharedClipboardSvc-win.cpp@ 91749

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