VBoxSharedClipboardSvc-win.cpp@ 85416

Last change on this file since 85416 was 85121, checked in by vboxsync, 4 years ago
iprt/cdefs.h: Refactored the typedef use of DECLCALLBACK as well as DECLCALLBACKMEMBER to wrap the whole expression, similar to the DECLR?CALLBACKMEMBER macros. This allows adding a throw() at the end when compiling with the VC++ compiler to indicate that the callbacks won't throw anything, so we can stop supressing the C5039 warning about passing functions that can potential throw C++ exceptions to extern C code that can't necessarily cope with such (unwind,++). Introduced a few _EX variations that allows specifying different/no calling convention too, as that's handy when dynamically resolving host APIs. Fixed numerous places missing DECLCALLBACK and such. Left two angry @todos regarding use of CreateThread. bugref:9794
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File size: 26.3 KB

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1	/* $Id: VBoxSharedClipboardSvc-win.cpp 85121 2020-07-08 19:33:26Z 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 void vboxClipboardSvcWinGetData(uint32_t u32Format, const void *pvSrc, uint32_t cbSrc,
70	void pvDst, uint32_t cbDst, uint32_t pcbActualDst)
71	{
72	LogFlowFunc(("cbSrc = %d, cbDst = %d\n", cbSrc, cbDst));
73
74	if ( u32Format == VBOX_SHCL_FMT_HTML
75	&& SharedClipboardWinIsCFHTML((const char *)pvSrc))
76	{
77	/** @todo r=bird: Why the double conversion? */
78	char *pszBuf = NULL;
79	uint32_t cbBuf = 0;
80	int rc = SharedClipboardWinConvertCFHTMLToMIME((const char *)pvSrc, cbSrc, &pszBuf, &cbBuf);
81	if (RT_SUCCESS(rc))
82	{
83	*pcbActualDst = cbBuf;
84	if (cbBuf > cbDst)
85	{
86	/* Do not copy data. The dst buffer is not enough. */
87	RTMemFree(pszBuf);
88	return;
89	}
90	memcpy(pvDst, pszBuf, cbBuf);
91	RTMemFree(pszBuf);
92	}
93	else
94	*pcbActualDst = 0;
95	}
96	else
97	{
98	*pcbActualDst = cbSrc;
99
100	if (cbSrc > cbDst)
101	{
102	/* Do not copy data. The dst buffer is not enough. */
103	return;
104	}
105
106	memcpy(pvDst, pvSrc, cbSrc);
107	}
108
109	#ifdef LOG_ENABLED
110	ShClDbgDumpData(pvDst, cbSrc, u32Format);
111	#endif
112
113	return;
114	}
115
116	static int vboxClipboardSvcWinDataSet(PSHCLCONTEXT pCtx, UINT cfFormat, void *pvData, uint32_t cbData)
117	{
118	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
119	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
120	AssertReturn (cbData, VERR_INVALID_PARAMETER);
121
122	int rc = VINF_SUCCESS;
123
124	HANDLE hMem = GlobalAlloc(GMEM_DDESHARE \| GMEM_MOVEABLE, cbData);
125
126	LogFlowFunc(("hMem=%p\n", hMem));
127
128	if (hMem)
129	{
130	void *pMem = GlobalLock(hMem);
131
132	LogFlowFunc(("pMem=%p, GlobalSize=%zu\n", pMem, GlobalSize(hMem)));
133
134	if (pMem)
135	{
136	LogFlowFunc(("Setting data\n"));
137
138	memcpy(pMem, pvData, cbData);
139
140	/* The memory must be unlocked before inserting to the Clipboard. */
141	GlobalUnlock(hMem);
142
143	/* 'hMem' contains the host clipboard data.
144	* size is 'cb' and format is 'format'.
145	*/
146	HANDLE hClip = SetClipboardData(cfFormat, hMem);
147
148	LogFlowFunc(("hClip=%p\n", hClip));
149
150	if (hClip)
151	{
152	/* The hMem ownership has gone to the system. Nothing to do. */
153	}
154	else
155	rc = RTErrConvertFromWin32(GetLastError());
156	}
157	else
158	rc = VERR_ACCESS_DENIED;
159
160	GlobalFree(hMem);
161	}
162	else
163	rc = RTErrConvertFromWin32(GetLastError());
164
165	LogFlowFuncLeaveRC(rc);
166	return rc;
167	}
168
169	static int vboxClipboardSvcWinDataRead(PSHCLCONTEXT pCtx, UINT uFormat, void *ppvData, uint32_t pcbData)
170	{
171	SHCLFORMAT fFormat = SharedClipboardWinClipboardFormatToVBox(uFormat);
172	LogFlowFunc(("uFormat=%u -> uFmt=0x%x\n", uFormat, fFormat));
173
174	if (fFormat == VBOX_SHCL_FMT_NONE)
175	{
176	LogRel2(("Shared Clipbaord: Windows format %u not supported, ingoring\n", uFormat));
177	return VERR_NOT_SUPPORTED;
178	}
179
180	SHCLEVENTID idEvent = 0;
181	int rc = ShClSvcDataReadRequest(pCtx->pClient, fFormat, &idEvent);
182	if (RT_SUCCESS(rc))
183	{
184	PSHCLEVENTPAYLOAD pPayload;
185	rc = ShClEventWait(&pCtx->pClient->EventSrc, idEvent, 30 * 1000, &pPayload);
186	if (RT_SUCCESS(rc))
187	{
188	*ppvData = pPayload ? pPayload->pvData : NULL;
189	*pcbData = pPayload ? pPayload->cbData : 0;
190	}
191
192	ShClEventRelease(&pCtx->pClient->EventSrc, idEvent);
193	ShClEventUnregister(&pCtx->pClient->EventSrc, idEvent);
194	}
195
196	LogFlowFuncLeaveRC(rc);
197	return rc;
198	}
199
200	static LRESULT CALLBACK vboxClipboardSvcWinWndProcMain(PSHCLCONTEXT pCtx,
201	HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) RT_NOTHROW_DEF
202	{
203	AssertPtr(pCtx);
204
205	LRESULT lresultRc = 0;
206
207	const PSHCLWINCTX pWinCtx = &pCtx->Win;
208
209	switch (uMsg)
210	{
211	case WM_CLIPBOARDUPDATE:
212	{
213	LogFunc(("WM_CLIPBOARDUPDATE\n"));
214
215	int rc = RTCritSectEnter(&pWinCtx->CritSect);
216	if (RT_SUCCESS(rc))
217	{
218	const HWND hWndClipboardOwner = GetClipboardOwner();
219
220	LogFunc(("WM_CLIPBOARDUPDATE: hWndClipboardOwnerUs=%p, hWndNewClipboardOwner=%p\n",
221	pWinCtx->hWndClipboardOwnerUs, hWndClipboardOwner));
222
223	if (pWinCtx->hWndClipboardOwnerUs != hWndClipboardOwner)
224	{
225	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
226	AssertRC(rc2);
227
228	/* Clipboard was updated by another application, retrieve formats and report back. */
229	rc = vboxClipboardSvcWinSyncInternal(pCtx);
230	}
231	else
232	{
233	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
234	AssertRC(rc2);
235	}
236	}
237
238	if (RT_FAILURE(rc))
239	LogRel(("Shared Clipboard: WM_CLIPBOARDUPDATE failed with %Rrc\n", rc));
240
241	break;
242	}
243
244	case WM_CHANGECBCHAIN:
245	{
246	LogFunc(("WM_CHANGECBCHAIN\n"));
247	lresultRc = SharedClipboardWinHandleWMChangeCBChain(pWinCtx, hWnd, uMsg, wParam, lParam);
248	break;
249	}
250
251	case WM_DRAWCLIPBOARD:
252	{
253	LogFunc(("WM_DRAWCLIPBOARD\n"));
254
255	int rc = RTCritSectEnter(&pWinCtx->CritSect);
256	if (RT_SUCCESS(rc))
257	{
258	const HWND hWndClipboardOwner = GetClipboardOwner();
259
260	LogFunc(("WM_DRAWCLIPBOARD: hWndClipboardOwnerUs=%p, hWndNewClipboardOwner=%p\n",
261	pWinCtx->hWndClipboardOwnerUs, hWndClipboardOwner));
262
263	if (pWinCtx->hWndClipboardOwnerUs != hWndClipboardOwner)
264	{
265	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
266	AssertRC(rc2);
267
268	/* Clipboard was updated by another application, retrieve formats and report back. */
269	rc = vboxClipboardSvcWinSyncInternal(pCtx);
270	}
271	else
272	{
273	int rc2 = RTCritSectLeave(&pWinCtx->CritSect);
274	AssertRC(rc2);
275	}
276	}
277
278	lresultRc = SharedClipboardWinChainPassToNext(pWinCtx, uMsg, wParam, lParam);
279	break;
280	}
281
282	case WM_TIMER:
283	{
284	int rc = SharedClipboardWinHandleWMTimer(pWinCtx);
285	AssertRC(rc);
286
287	break;
288	}
289
290	case WM_RENDERFORMAT:
291	{
292	LogFunc(("WM_RENDERFORMAT\n"));
293
294	/* Insert the requested clipboard format data into the clipboard. */
295	const UINT uFormat = (UINT)wParam;
296	const SHCLFORMAT fFormat = SharedClipboardWinClipboardFormatToVBox(uFormat);
297	LogFunc(("WM_RENDERFORMAT: uFormat=%u -> fFormat=0x%x\n", uFormat, fFormat));
298
299	if ( fFormat == VBOX_SHCL_FMT_NONE
300	\|\| pCtx->pClient == NULL)
301	{
302	/* Unsupported clipboard format is requested. */
303	LogFunc(("WM_RENDERFORMAT unsupported format requested or client is not active\n"));
304	SharedClipboardWinClear();
305	}
306	else
307	{
308	void *pvData = NULL;
309	uint32_t cbData = 0;
310	int rc = vboxClipboardSvcWinDataRead(pCtx, uFormat, &pvData, &cbData);
311	if ( RT_SUCCESS(rc)
312	&& pvData
313	&& cbData)
314	{
315	rc = vboxClipboardSvcWinDataSet(pCtx, uFormat, pvData, cbData);
316
317	RTMemFree(pvData);
318	cbData = 0;
319	}
320
321	if (RT_FAILURE(rc))
322	SharedClipboardWinClear();
323	}
324
325	break;
326	}
327
328	case WM_RENDERALLFORMATS:
329	{
330	LogFunc(("WM_RENDERALLFORMATS\n"));
331
332	int rc = SharedClipboardWinHandleWMRenderAllFormats(pWinCtx, hWnd);
333	AssertRC(rc);
334
335	break;
336	}
337
338	case SHCL_WIN_WM_REPORT_FORMATS:
339	{
340	/* Announce available formats. Do not insert data -- will be inserted in WM_RENDERFORMAT (or via IDataObject). */
341	SHCLFORMATS fFormats = (uint32_t)lParam;
342	LogFunc(("SHCL_WIN_WM_REPORT_FORMATS: fFormats=0x%x\n", fFormats));
343
344	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
345	if (fFormats & VBOX_SHCL_FMT_URI_LIST)
346	{
347	PSHCLTRANSFER pTransfer;
348	int rc = shClSvcTransferStart(pCtx->pClient,
349	SHCLTRANSFERDIR_FROM_REMOTE, SHCLSOURCE_REMOTE,
350	&pTransfer);
351	if (RT_SUCCESS(rc))
352	{
353	/* Create the IDataObject implementation the host OS needs and assign
354	* the newly created transfer to this object. */
355	rc = SharedClipboardWinTransferCreate(&pCtx->Win, pTransfer);
356
357	/* Note: The actual requesting + retrieving of data will be done in the IDataObject implementation
358	(ClipboardDataObjectImpl::GetData()). */
359	}
360	else
361	LogRel(("Shared Clipboard: Initializing read transfer failed with %Rrc\n", rc));
362	}
363	else
364	{
365	#endif
366	int rc = SharedClipboardWinOpen(hWnd);
367	if (RT_SUCCESS(rc))
368	{
369	SharedClipboardWinClear();
370
371	rc = SharedClipboardWinAnnounceFormats(pWinCtx, fFormats);
372
373	SharedClipboardWinClose();
374	}
375	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
376	}
377	#endif
378	LogFunc(("SHCL_WIN_WM_REPORT_FORMATS: lastErr=%ld\n", GetLastError()));
379	break;
380	}
381
382	case WM_DESTROY:
383	{
384	LogFunc(("WM_DESTROY\n"));
385
386	int rc = SharedClipboardWinHandleWMDestroy(pWinCtx);
387	AssertRC(rc);
388
389	PostQuitMessage(0);
390	break;
391	}
392
393	default:
394	break;
395	}
396
397	LogFlowFunc(("LEAVE hWnd=%p, WM_ %u\n", hWnd, uMsg));
398	return DefWindowProc(hWnd, uMsg, wParam, lParam);
399	}
400
401	/**
402	* Static helper function for having a per-client proxy window instances.
403	*/
404	static LRESULT CALLBACK vboxClipboardSvcWinWndProcInstance(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) RT_NOTHROW_DEF
405	{
406	LONG_PTR pUserData = GetWindowLongPtr(hWnd, GWLP_USERDATA);
407	AssertPtrReturn(pUserData, 0);
408
409	PSHCLCONTEXT pCtx = reinterpret_cast<PSHCLCONTEXT>(pUserData);
410	if (pCtx)
411	return vboxClipboardSvcWinWndProcMain(pCtx, hWnd, uMsg, wParam, lParam);
412
413	return 0;
414	}
415
416	/**
417	* Static helper function for routing Windows messages to a specific
418	* proxy window instance.
419	*/
420	static LRESULT CALLBACK vboxClipboardSvcWinWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) RT_NOTHROW_DEF
421	{
422	/* Note: WM_NCCREATE is not the first ever message which arrives, but
423	* early enough for us. */
424	if (uMsg == WM_NCCREATE)
425	{
426	LogFlowFunc(("WM_NCCREATE\n"));
427
428	LPCREATESTRUCT pCS = (LPCREATESTRUCT)lParam;
429	AssertPtr(pCS);
430	SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)pCS->lpCreateParams);
431	SetWindowLongPtr(hWnd, GWLP_WNDPROC, (LONG_PTR)vboxClipboardSvcWinWndProcInstance);
432
433	return vboxClipboardSvcWinWndProcInstance(hWnd, uMsg, wParam, lParam);
434	}
435
436	/* No window associated yet. */
437	return DefWindowProc(hWnd, uMsg, wParam, lParam);
438	}
439
440	DECLCALLBACK(int) vboxClipboardSvcWinThread(RTTHREAD hThreadSelf, void *pvUser)
441	{
442	LogFlowFuncEnter();
443
444	bool fThreadSignalled = false;
445
446	const PSHCLCONTEXT pCtx = (PSHCLCONTEXT)pvUser;
447	AssertPtr(pCtx);
448	const PSHCLWINCTX pWinCtx = &pCtx->Win;
449
450	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
451
452	/* Register the Window Class. */
453	WNDCLASS wc;
454	RT_ZERO(wc);
455
456	wc.style = CS_NOCLOSE;
457	wc.lpfnWndProc = vboxClipboardSvcWinWndProc;
458	wc.hInstance = hInstance;
459	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
460
461	/* Register an unique wnd class name. */
462	char szWndClassName[32];
463	RTStrPrintf2(szWndClassName, sizeof(szWndClassName),
464	"%s-%RU64", SHCL_WIN_WNDCLASS_NAME, RTThreadGetNative(hThreadSelf));
465	wc.lpszClassName = szWndClassName;
466
467	int rc;
468
469	ATOM atomWindowClass = RegisterClass(&wc);
470	if (atomWindowClass == 0)
471	{
472	LogFunc(("Failed to register window class\n"));
473	rc = VERR_NOT_SUPPORTED;
474	}
475	else
476	{
477	/* Create a window and make it a clipboard viewer. */
478	pWinCtx->hWnd = CreateWindowEx(WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
479	szWndClassName, szWndClassName,
480	WS_POPUPWINDOW,
481	-200, -200, 100, 100, NULL, NULL, hInstance, pCtx /* lpParam */);
482	if (pWinCtx->hWnd == NULL)
483	{
484	LogFunc(("Failed to create window\n"));
485	rc = VERR_NOT_SUPPORTED;
486	}
487	else
488	{
489	SetWindowPos(pWinCtx->hWnd, HWND_TOPMOST, -200, -200, 0, 0,
490	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
491
492	rc = SharedClipboardWinChainAdd(&pCtx->Win);
493	if (RT_SUCCESS(rc))
494	{
495	if (!SharedClipboardWinIsNewAPI(&pWinCtx->newAPI))
496	pWinCtx->oldAPI.timerRefresh = SetTimer(pWinCtx->hWnd, 0, 10 * 1000, NULL);
497	}
498
499	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
500	if (RT_SUCCESS(rc))
501	{
502	HRESULT hr = OleInitialize(NULL);
503	if (FAILED(hr))
504	{
505	LogRel(("Shared Clipboard: Initializing window thread OLE failed (%Rhrc) -- file transfers unavailable\n", hr));
506	/* Not critical, the rest of the clipboard might work. */
507	}
508	else
509	LogRel(("Shared Clipboard: Initialized window thread OLE\n"));
510	}
511	#endif
512	int rc2 = RTThreadUserSignal(hThreadSelf);
513	AssertRC(rc2);
514
515	fThreadSignalled = true;
516
517	MSG msg;
518	BOOL msgret = 0;
519	while ((msgret = GetMessage(&msg, NULL, 0, 0)) > 0)
520	{
521	TranslateMessage(&msg);
522	DispatchMessage(&msg);
523	}
524
525	/*
526	* Window procedure can return error, * but this is exceptional situation that should be
527	* identified in testing.
528	*/
529	Assert(msgret >= 0);
530	LogFunc(("Message loop finished. GetMessage returned %d, message id: %d \n", msgret, msg.message));
531
532	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
533	OleSetClipboard(NULL); /* Make sure to flush the clipboard on destruction. */
534	OleUninitialize();
535	#endif
536	}
537	}
538
539	pWinCtx->hWnd = NULL;
540
541	if (atomWindowClass != 0)
542	{
543	UnregisterClass(szWndClassName, hInstance);
544	atomWindowClass = 0;
545	}
546
547	if (!fThreadSignalled)
548	{
549	int rc2 = RTThreadUserSignal(hThreadSelf);
550	AssertRC(rc2);
551	}
552
553	LogFlowFuncLeaveRC(rc);
554	return rc;
555	}
556
557	/**
558	* Synchronizes the host and the guest clipboard formats by sending all supported host clipboard
559	* formats to the guest.
560	*
561	* @returns VBox status code, VINF_NO_CHANGE if no synchronization was required.
562	* @param pCtx Clipboard context to synchronize.
563	*/
564	static int vboxClipboardSvcWinSyncInternal(PSHCLCONTEXT pCtx)
565	{
566	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
567
568	LogFlowFuncEnter();
569
570	int rc;
571
572	if (pCtx->pClient)
573	{
574	SHCLFORMATS fFormats = 0;
575	rc = SharedClipboardWinGetFormats(&pCtx->Win, &fFormats);
576	if ( RT_SUCCESS(rc)
577	&& fFormats != VBOX_SHCL_FMT_NONE) /** @todo r=bird: BUGBUG: revisit this. */
578	rc = ShClSvcHostReportFormats(pCtx->pClient, fFormats);
579	}
580	else /* If we don't have any client data (yet), bail out. */
581	rc = VINF_NO_CHANGE;
582
583	LogFlowFuncLeaveRC(rc);
584	return rc;
585	}
586
587	/*
588	* Public platform dependent functions.
589	*/
590
591	int ShClBackendInit(void)
592	{
593	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
594	HRESULT hr = OleInitialize(NULL);
595	if (FAILED(hr))
596	{
597	LogRel(("Shared Clipboard: Initializing OLE failed (%Rhrc) -- file transfers unavailable\n", hr));
598	/* Not critical, the rest of the clipboard might work. */
599	}
600	else
601	LogRel(("Shared Clipboard: Initialized OLE\n"));
602	#endif
603
604	return VINF_SUCCESS;
605	}
606
607	void ShClBackendDestroy(void)
608	{
609	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
610	OleSetClipboard(NULL); /* Make sure to flush the clipboard on destruction. */
611	OleUninitialize();
612	#endif
613	}
614
615	int ShClBackendConnect(PSHCLCLIENT pClient, bool fHeadless)
616	{
617	RT_NOREF(fHeadless);
618
619	LogFlowFuncEnter();
620
621	int rc;
622
623	PSHCLCONTEXT pCtx = (PSHCLCONTEXT)RTMemAllocZ(sizeof(SHCLCONTEXT));
624	if (pCtx)
625	{
626	rc = SharedClipboardWinCtxInit(&pCtx->Win);
627	if (RT_SUCCESS(rc))
628	{
629	rc = RTThreadCreate(&pCtx->hThread, vboxClipboardSvcWinThread, pCtx /* pvUser /, _64K / Stack size */,
630	RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "SHCLIP");
631	if (RT_SUCCESS(rc))
632	{
633	int rc2 = RTThreadUserWait(pCtx->hThread, 30 * 1000 /* Timeout in ms */);
634	AssertRC(rc2);
635	}
636	}
637
638	pClient->State.pCtx = pCtx;
639	pClient->State.pCtx->pClient = pClient;
640	}
641	else
642	rc = VERR_NO_MEMORY;
643
644	LogFlowFuncLeaveRC(rc);
645	return rc;
646	}
647
648	int ShClBackendSync(PSHCLCLIENT pClient)
649	{
650	/* Sync the host clipboard content with the client. */
651	return vboxClipboardSvcWinSyncInternal(pClient->State.pCtx);
652	}
653
654	int ShClBackendDisconnect(PSHCLCLIENT pClient)
655	{
656	AssertPtrReturn(pClient, VERR_INVALID_POINTER);
657
658	LogFlowFuncEnter();
659
660	int rc = VINF_SUCCESS;
661
662	PSHCLCONTEXT pCtx = pClient->State.pCtx;
663	if (pCtx)
664	{
665	if (pCtx->Win.hWnd)
666	PostMessage(pCtx->Win.hWnd, WM_DESTROY, 0 /* wParam /, 0 / lParam */);
667
668	if (pCtx->hThread != NIL_RTTHREAD)
669	{
670	LogFunc(("Waiting for thread to terminate ...\n"));
671
672	/* Wait for the window thread to terminate. */
673	rc = RTThreadWait(pCtx->hThread, 30 * 1000 /* Timeout in ms */, NULL);
674	if (RT_FAILURE(rc))
675	LogRel(("Shared Clipboard: Waiting for window thread termination failed with rc=%Rrc\n", rc));
676
677	pCtx->hThread = NIL_RTTHREAD;
678	}
679
680	SharedClipboardWinCtxDestroy(&pCtx->Win);
681
682	if (RT_SUCCESS(rc))
683	{
684	RTMemFree(pCtx);
685	pCtx = NULL;
686
687	pClient->State.pCtx = NULL;
688	}
689	}
690
691	LogFlowFuncLeaveRC(rc);
692	return rc;
693	}
694
695	int ShClBackendFormatAnnounce(PSHCLCLIENT pClient, SHCLFORMATS fFormats)
696	{
697	AssertPtrReturn(pClient, VERR_INVALID_POINTER);
698
699	PSHCLCONTEXT pCtx = pClient->State.pCtx;
700	AssertPtrReturn(pCtx, VERR_INVALID_POINTER);
701
702	LogFlowFunc(("fFormats=0x%x, hWnd=%p\n", fFormats, pCtx->Win.hWnd));
703
704	/*
705	* The guest announced formats. Forward to the window thread.
706	*/
707	PostMessage(pCtx->Win.hWnd, SHCL_WIN_WM_REPORT_FORMATS,
708	0 /* wParam /, fFormats / lParam */);
709
710
711	LogFlowFuncLeaveRC(VINF_SUCCESS);
712	return VINF_SUCCESS;
713	}
714
715	int ShClBackendReadData(PSHCLCLIENT pClient, PSHCLCLIENTCMDCTX pCmdCtx,
716	SHCLFORMAT uFormat, void pvData, uint32_t cbData, uint32_t pcbActual)
717	{
718	AssertPtrReturn(pClient, VERR_INVALID_POINTER);
719	RT_NOREF(pCmdCtx);
720	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
721	AssertPtrReturn(pClient->State.pCtx, VERR_INVALID_POINTER);
722
723	LogFlowFunc(("uFormat=%02X\n", uFormat));
724
725	HANDLE hClip = NULL;
726
727	const PSHCLWINCTX pWinCtx = &pClient->State.pCtx->Win;
728
729	/*
730	* The guest wants to read data in the given format.
731	*/
732	int rc = SharedClipboardWinOpen(pWinCtx->hWnd);
733	if (RT_SUCCESS(rc))
734	{
735	LogFunc(("Clipboard opened\n"));
736
737	if (uFormat & VBOX_SHCL_FMT_BITMAP)
738	{
739	hClip = GetClipboardData(CF_DIB);
740	if (hClip != NULL)
741	{
742	LPVOID lp = GlobalLock(hClip);
743
744	if (lp != NULL)
745	{
746	LogFunc(("CF_DIB\n"));
747
748	vboxClipboardSvcWinGetData(VBOX_SHCL_FMT_BITMAP, lp, GlobalSize(hClip),
749	pvData, cbData, pcbActual);
750
751	GlobalUnlock(hClip);
752	}
753	else
754	{
755	hClip = NULL;
756	}
757	}
758	}
759	else if (uFormat & VBOX_SHCL_FMT_UNICODETEXT)
760	{
761	hClip = GetClipboardData(CF_UNICODETEXT);
762	if (hClip != NULL)
763	{
764	LPWSTR uniString = (LPWSTR)GlobalLock(hClip);
765
766	if (uniString != NULL)
767	{
768	LogFunc(("CF_UNICODETEXT\n"));
769
770	vboxClipboardSvcWinGetData(VBOX_SHCL_FMT_UNICODETEXT, uniString, (lstrlenW(uniString) + 1) * 2,
771	pvData, cbData, pcbActual);
772
773	GlobalUnlock(hClip);
774	}
775	else
776	{
777	hClip = NULL;
778	}
779	}
780	}
781	else if (uFormat & VBOX_SHCL_FMT_HTML)
782	{
783	UINT format = RegisterClipboardFormat(SHCL_WIN_REGFMT_HTML);
784	if (format != 0)
785	{
786	hClip = GetClipboardData(format);
787	if (hClip != NULL)
788	{
789	LPVOID lp = GlobalLock(hClip);
790	if (lp != NULL)
791	{
792	/** @todo r=andy Add data overflow handling. */
793	vboxClipboardSvcWinGetData(VBOX_SHCL_FMT_HTML, lp, GlobalSize(hClip),
794	pvData, cbData, pcbActual);
795	#ifdef VBOX_STRICT
796	LogFlowFunc(("Raw HTML clipboard data from host:"));
797	ShClDbgDumpHtml((char *)pvData, cbData);
798	#endif
799	GlobalUnlock(hClip);
800	}
801	else
802	{
803	hClip = NULL;
804	}
805	}
806	}
807	}
808	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
809	else if (uFormat & VBOX_SHCL_FMT_URI_LIST)
810	{
811	AssertFailed(); /** @todo */
812	}
813	#endif /* VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS */
814	SharedClipboardWinClose();
815	}
816
817	if (hClip == NULL)
818	{
819	/* Reply with empty data. */
820	vboxClipboardSvcWinGetData(0, NULL, 0, pvData, cbData, pcbActual);
821	}
822
823	LogFlowFuncLeaveRC(rc);
824	return rc;
825	}
826
827	int ShClBackendWriteData(PSHCLCLIENT pClient, PSHCLCLIENTCMDCTX pCmdCtx,
828	SHCLFORMAT uFormat, void *pvData, uint32_t cbData)
829	{
830	LogFlowFuncEnter();
831
832	int rc = ShClSvcDataReadSignal(pClient, pCmdCtx, uFormat, pvData, cbData);
833
834	LogFlowFuncLeaveRC(rc);
835	return rc;
836	}
837
838	#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS
839	int ShClBackendTransferCreate(PSHCLCLIENT pClient, PSHCLTRANSFER pTransfer)
840	{
841	RT_NOREF(pClient, pTransfer);
842
843	LogFlowFuncEnter();
844
845	return VINF_SUCCESS;
846	}
847
848	int ShClBackendTransferDestroy(PSHCLCLIENT pClient, PSHCLTRANSFER pTransfer)
849	{
850	LogFlowFuncEnter();
851
852	SharedClipboardWinTransferDestroy(&pClient->State.pCtx->Win, pTransfer);
853
854	return VINF_SUCCESS;
855	}
856
857	int ShClBackendTransferGetRoots(PSHCLCLIENT pClient, PSHCLTRANSFER pTransfer)
858	{
859	LogFlowFuncEnter();
860
861	const PSHCLWINCTX pWinCtx = &pClient->State.pCtx->Win;
862
863	int rc = SharedClipboardWinGetRoots(pWinCtx, pTransfer);
864
865	LogFlowFuncLeaveRC(rc);
866	return rc;
867	}
868	#endif /* VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS */
869

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source: vbox/trunk/src/VBox/HostServices/SharedClipboard/VBoxSharedClipboardSvc-win.cpp@ 85416

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