VBoxServiceClipboard-os2.cpp@ 41943

Last change on this file since 41943 was 40128, checked in by vboxsync, 13 years ago
VBoxService: Fixed unknown command line parameter handling of sub-services.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 37.3 KB

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1	/** $Id: VBoxServiceClipboard-os2.cpp 40128 2012-02-14 12:56:40Z vboxsync $ */
2	/** @file
3	* VBoxService - Guest Additions Clipboard Service, OS/2.
4	*/
5
6	/*
7	* Copyright (C) 2007 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 INCL_BASE
23	#define INCL_PM
24	#define INCL_ERRORS
25	#include <os2.h>
26
27	#include <iprt/thread.h>
28	#include <iprt/string.h>
29	#include <iprt/semaphore.h>
30	#include <iprt/time.h>
31	#include <iprt/mem.h>
32	#include <iprt/param.h>
33	#include <iprt/assert.h>
34	#include <iprt/asm.h>
35	#include <VBox/VBoxGuestLib.h>
36	#include <VBox/HostServices/VBoxClipboardSvc.h>
37	#include "VBoxServiceInternal.h"
38
39
40	/*******************************************************************************
41	* Structures and Typedefs *
42	*******************************************************************************/
43	/** Header for Odin32 specific clipboard entries.
44	* (Used to get the correct size of the data.)
45	*/
46	typedef struct _Odin32ClipboardHeader
47	{
48	/** magic number */
49	char achMagic[8];
50	/** Size of the following data.
51	* (The interpretation depends on the type.) */
52	unsigned cbData;
53	/** Odin32 format number. */
54	unsigned uFormat;
55	} CLIPHEADER, *PCLIPHEADER;
56
57	#define CLIPHEADER_MAGIC "Odin\1\0\1"
58
59
60	/*******************************************************************************
61	* Global Variables *
62	*******************************************************************************/
63
64	/** The control thread (main) handle.
65	* Only used to avoid some queue creation trouble. */
66	static RTTHREAD g_ThreadCtrl = NIL_RTTHREAD;
67	/** The HAB of the control thread (main). */
68	static HAB g_habCtrl = NULLHANDLE;
69	/** The HMQ of the control thread (main). */
70	static HMQ g_hmqCtrl = NULLHANDLE;
71
72	/** The Listener thread handle. */
73	static RTTHREAD g_ThreadListener = NIL_RTTHREAD;
74	/** The HAB of the listener thread. */
75	static HAB g_habListener = NULLHANDLE;
76	/** The HMQ of the listener thread. */
77	static HMQ g_hmqListener = NULLHANDLE;
78	/** Indicator that gets set if the listener thread is successfully initialized. */
79	static bool volatile g_fListenerOkay = false;
80
81	/** The HAB of the worker thread. */
82	static HAB g_habWorker = NULLHANDLE;
83	/** The HMQ of the worker thread. */
84	static HMQ g_hmqWorker = NULLHANDLE;
85	/** The object window handle. */
86	static HWND g_hwndWorker = NULLHANDLE;
87	/** The timer id returned by WinStartTimer. */
88	static ULONG g_idWorkerTimer = ~0UL;
89	/** The state of the clipboard.
90	* @remark I'm trying out the 'k' prefix from the mac here, bear with me. */
91	static enum
92	{
93	/** The clipboard hasn't been initialized yet. */
94	kClipboardState_Uninitialized = 0,
95	/** WinSetClipbrdViewer call in progress, ignore WM_DRAWCLIPBOARD. */
96	kClipboardState_SettingViewer,
97	/** We're monitoring the clipboard as a viewer. */
98	kClipboardState_Viewer,
99	/** We're monitoring the clipboard using polling.
100	* This usually means something is wrong... */
101	kClipboardState_Polling,
102	/** We're destroying the clipboard content, ignore WM_DESTROYCLIPBOARD. */
103	kClipboardState_Destroying,
104	/** We're owning the clipboard (i.e. we have data on it). */
105	kClipboardState_Owner
106	} g_enmState = kClipboardState_Uninitialized;
107	/** Set if the clipboard was empty the last time we polled it. */
108	static bool g_fEmptyClipboard = false;
109
110	/** A clipboard format atom for the dummy clipboard data we insert
111	* watching for clipboard changes. If this format is found on the
112	* clipboard, the empty clipboard function has not been called
113	* since we last polled it. */
114	static ATOM g_atomNothingChanged = 0;
115
116	/** The clipboard connection client ID. */
117	static uint32_t g_u32ClientId;
118	/** Odin32 CF_UNICODETEXT. See user32.cpp. */
119	static ATOM g_atomOdin32UnicodeText = 0;
120	/** Odin32 CF_UNICODETEXT. See user32.cpp. */
121	#define SZFMT_ODIN32_UNICODETEXT (PCSZ)"Odin32 UnicodeText"
122
123
124
125
126	/** @copydoc VBOXSERVICE::pfnPreInit */
127	static DECLCALLBACK(int) VBoxServiceClipboardOS2PreInit(void)
128	{
129	return VINF_SUCCESS;
130	}
131
132
133	/** @copydoc VBOXSERVICE::pfnOption */
134	static DECLCALLBACK(int) VBoxServiceClipboardOS2Option(const char ppszShort, int argc, char argv, int *pi)
135	{
136	NOREF(ppszShort);
137	NOREF(argc);
138	NOREF(argv);
139	NOREF(pi);
140
141	return -1;
142	}
143
144
145	/** @copydoc VBOXSERVICE::pfnInit */
146	static DECLCALLBACK(int) VBoxServiceClipboardOS2Init(void)
147	{
148	int rc = VERR_GENERAL_FAILURE;
149	g_ThreadCtrl = RTThreadSelf();
150
151	/*
152	* Make PM happy.
153	*/
154	PPIB pPib;
155	PTIB pTib;
156	DosGetInfoBlocks(&pTib, &pPib);
157	pPib->pib_ultype = 3; /* PM session type */
158
159	/*
160	* Since we have to send shutdown messages and such from the
161	* service controller (main) thread, create a HAB and HMQ for it.
162	*/
163	g_habCtrl = WinInitialize(0);
164	if (g_habCtrl == NULLHANDLE)
165	{
166	VBoxServiceError("WinInitialize(0) failed, lasterr=%lx\n", WinGetLastError(NULLHANDLE));
167	return VERR_GENERAL_FAILURE;
168	}
169	g_hmqCtrl = WinCreateMsgQueue(g_habCtrl, 0);
170	if (g_hmqCtrl != NULLHANDLE)
171	{
172	/*
173	* Create the 'nothing-changed' format.
174	*/
175	g_atomNothingChanged = WinAddAtom(WinQuerySystemAtomTable(), (PCSZ)"VirtualBox Clipboard Service");
176	LONG lLastError = WinGetLastError(g_habCtrl);
177	if (g_atomNothingChanged == 0)
178	g_atomNothingChanged = WinFindAtom(WinQuerySystemAtomTable(), (PCSZ)"VirtualBox Clipboard Service");
179	if (g_atomNothingChanged)
180	{
181	/*
182	* Connect to the clipboard service.
183	*/
184	VBoxServiceVerbose(4, "clipboard: connecting\n");
185	rc = VbglR3ClipboardConnect(&g_u32ClientId);
186	if (RT_SUCCESS(rc))
187	{
188	/*
189	* Create any extra clipboard type atoms, like the odin unicode text.
190	*/
191	g_atomOdin32UnicodeText = WinAddAtom(WinQuerySystemAtomTable(), SZFMT_ODIN32_UNICODETEXT);
192	lLastError = WinGetLastError(g_habCtrl);
193	if (g_atomOdin32UnicodeText == 0)
194	g_atomOdin32UnicodeText = WinFindAtom(WinQuerySystemAtomTable(), SZFMT_ODIN32_UNICODETEXT);
195	if (g_atomOdin32UnicodeText == 0)
196	VBoxServiceError("WinAddAtom() failed, lasterr=%lx; WinFindAtom() failed, lasterror=%lx\n",
197	lLastError, WinGetLastError(g_habCtrl));
198
199	VBoxServiceVerbose(2, "g_u32ClientId=%RX32 g_atomNothingChanged=%#x g_atomOdin32UnicodeText=%#x\n",
200	g_u32ClientId, g_atomNothingChanged, g_atomOdin32UnicodeText);
201	return VINF_SUCCESS;
202	}
203
204	VBoxServiceError("Failed to connect to the clipboard service, rc=%Rrc!\n", rc);
205	}
206	else
207	VBoxServiceError("WinAddAtom() failed, lasterr=%lx; WinFindAtom() failed, lasterror=%lx\n",
208	lLastError, WinGetLastError(g_habCtrl));
209	}
210	else
211	VBoxServiceError("WinCreateMsgQueue(,0) failed, lasterr=%lx\n", WinGetLastError(g_habCtrl));
212	WinTerminate(g_habCtrl);
213	return rc;
214	}
215
216
217	/**
218	* Check that we're still the view / try make us the viewer.
219	*/
220	static void VBoxServiceClipboardOS2PollViewer(void)
221	{
222	const int iOrgState = g_enmState;
223
224	HWND hwndClipboardViewer = WinQueryClipbrdViewer(g_habWorker);
225	if (hwndClipboardViewer == g_hwndWorker)
226	return;
227
228	if (hwndClipboardViewer == NULLHANDLE)
229	{
230	/* The API will send a WM_DRAWCLIPBOARD message before returning. */
231	g_enmState = kClipboardState_SettingViewer;
232	if (WinSetClipbrdViewer(g_habWorker, g_hwndWorker))
233	g_enmState = kClipboardState_Viewer;
234	else
235	g_enmState = kClipboardState_Polling;
236	}
237	else
238	g_enmState = kClipboardState_Polling;
239	if ((int)g_enmState != iOrgState)
240	{
241	if (g_enmState == kClipboardState_Viewer)
242	VBoxServiceVerbose(3, "clipboard: viewer\n");
243	else
244	VBoxServiceVerbose(3, "clipboard: poller\n");
245	}
246	}
247
248
249	/**
250	* Advertise the formats available from the host.
251	*/
252	static void VBoxServiceClipboardOS2AdvertiseHostFormats(uint32_t fFormats)
253	{
254	/*
255	* Open the clipboard and switch to 'destruction' mode.
256	* Make sure we stop being viewer. Temporarily also make sure we're
257	* not the owner so that PM won't send us any WM_DESTROYCLIPBOARD message.
258	*/
259	if (WinOpenClipbrd(g_habWorker))
260	{
261	if (g_enmState == kClipboardState_Viewer)
262	WinSetClipbrdViewer(g_habWorker, NULLHANDLE);
263	if (g_enmState == kClipboardState_Owner)
264	WinSetClipbrdOwner(g_habWorker, NULLHANDLE);
265
266	g_enmState = kClipboardState_Destroying;
267	if (WinEmptyClipbrd(g_habWorker))
268	{
269	/*
270	* Take clipboard ownership.
271	*/
272	if (WinSetClipbrdOwner(g_habWorker, g_hwndWorker))
273	{
274	g_enmState = kClipboardState_Owner;
275
276	/*
277	* Do the format advertising.
278	*/
279	if (fFormats & (VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT/* \| VBOX_SHARED_CLIPBOARD_FMT_HTML ?? */))
280	{
281	if (!WinSetClipbrdData(g_habWorker, 0, CF_TEXT, CFI_POINTER))
282	VBoxServiceError("WinSetClipbrdData(,,CF_TEXT,) failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
283	if ( g_atomOdin32UnicodeText
284	&& !WinSetClipbrdData(g_habWorker, 0, g_atomOdin32UnicodeText, CFI_POINTER))
285	VBoxServiceError("WinSetClipbrdData(,,g_atomOdin32UnicodeText,) failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
286	}
287	if (fFormats & VBOX_SHARED_CLIPBOARD_FMT_BITMAP)
288	{
289	/** @todo bitmaps */
290	}
291	}
292	else
293	{
294	VBoxServiceError("WinSetClipbrdOwner failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
295	g_enmState = kClipboardState_Polling;
296	}
297	}
298	else
299	{
300	VBoxServiceError("WinEmptyClipbrd failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
301	g_enmState = kClipboardState_Polling;
302	}
303
304	if (g_enmState == kClipboardState_Polling)
305	{
306	g_fEmptyClipboard = true;
307	VBoxServiceClipboardOS2PollViewer();
308	}
309
310	WinCloseClipbrd(g_habWorker);
311	}
312	else
313	VBoxServiceError("VBoxServiceClipboardOS2AdvertiseHostFormats: WinOpenClipbrd failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
314	}
315
316
317	static void VBoxServiceClipboardOs2ConvertToOdin32(uint32_t fFormat, USHORT usFmt, void pv, uint32_t cb)
318	{
319	PVOID pvPM = NULL;
320	APIRET rc = DosAllocSharedMem(&pvPM, NULL, cb + sizeof(CLIPHEADER), OBJ_GIVEABLE \| OBJ_GETTABLE \| OBJ_TILE \| PAG_READ \| PAG_WRITE \| PAG_COMMIT);
321	if (rc)
322	{
323	PCLIPHEADER pHdr = (PCLIPHEADER)pvPM;
324	memcpy(pHdr->achMagic, CLIPHEADER_MAGIC, sizeof(pHdr->achMagic));
325	pHdr->cbData = cb;
326	if (usFmt == g_atomOdin32UnicodeText)
327	pHdr->uFormat = usFmt;
328	else
329	AssertFailed();
330	memcpy(pHdr + 1, pv, cb);
331	}
332	else
333	{
334	VBoxServiceError("DosAllocSharedMem(,,%#x,,) -> %ld\n", cb + sizeof(CLIPHEADER), rc);
335	pvPM = NULL;
336	}
337	return pvPM;
338	}
339
340
341	static void VBoxServiceClipboardOs2ConvertToPM(uint32_t fFormat, USHORT usFmt, void pv, uint32_t cb)
342	{
343	void *pvPM = NULL;
344
345	/*
346	* The Odin32 stuff is simple, we just assume windows data from the host
347	* and all we need to do is add the header.
348	*/
349	if ( usFmt
350	&& ( usFmt == g_atomOdin32UnicodeText
351	/* \|\| usFmt == ...*/
352	)
353	)
354	pvPM = VBoxServiceClipboardOs2ConvertToOdin32(fFormat, usFmt, pv, cb);
355	else if (usFmt == CF_TEXT)
356	{
357	/*
358	* Convert the unicode text to the current ctype locale.
359	*
360	* Note that we probably should be using the current PM or DOS codepage
361	* here instead of the LC_CTYPE one which iconv uses by default.
362	* -lazybird
363	*/
364	Assert(fFormat & VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT);
365	char *pszUtf8;
366	int rc = RTUtf16ToUtf8((PCRTUTF16)pv, &pszUtf8);
367	if (RT_SUCCESS(rc))
368	{
369	char *pszLocale;
370	rc = RTStrUtf8ToCurrentCP(&pszLocale, pszUtf8);
371	if (RT_SUCCESS(rc))
372	{
373	size_t cbPM = strlen(pszLocale) + 1;
374	APIRET orc = DosAllocSharedMem(&pvPM, NULL, cbPM, OBJ_GIVEABLE \| OBJ_GETTABLE \| OBJ_TILE \| PAG_READ \| PAG_WRITE \| PAG_COMMIT);
375	if (orc == NO_ERROR)
376	memcpy(pvPM, pszLocale, cbPM);
377	else
378	{
379	VBoxServiceError("DosAllocSharedMem(,,%#x,,) -> %ld\n", cb + sizeof(CLIPHEADER), orc);
380	pvPM = NULL;
381	}
382	RTStrFree(pszLocale);
383	}
384	else
385	VBoxServiceError("RTStrUtf8ToCurrentCP() -> %Rrc\n", rc);
386	RTStrFree(pszUtf8);
387	}
388	else
389	VBoxServiceError("RTUtf16ToUtf8() -> %Rrc\n", rc);
390	}
391
392	return pvPM;
393	}
394
395
396	/**
397	* Tries to deliver an advertised host format.
398	*
399	* @param usFmt The PM format name.
400	*
401	* @remark We must not try open the clipboard here because WM_RENDERFMT is a
402	* request send synchronously by someone who has already opened the
403	* clipboard. We would enter a deadlock trying to open it here.
404	*
405	*/
406	static void VBoxServiceClipboardOS2RenderFormat(USHORT usFmt)
407	{
408	bool fSucceeded = false;
409
410	/*
411	* Determine which format.
412	*/
413	uint32_t fFormat;
414	if ( usFmt == CF_TEXT
415	\|\| usFmt == g_atomOdin32UnicodeText)
416	fFormat = VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT;
417	else /** @todo bitmaps */
418	fFormat = 0;
419	if (fFormat)
420	{
421	/*
422	* Query the data from the host.
423	* This might require two iterations because of buffer guessing.
424	*/
425	uint32_t cb = _4K;
426	uint32_t cbAllocated = cb;
427	int rc = VERR_NO_MEMORY;
428	void *pv = RTMemPageAllocZ(cbAllocated);
429	if (pv)
430	{
431	VBoxServiceVerbose(4, "clipboard: reading host data (%#x)\n", fFormat);
432	rc = VbglR3ClipboardReadData(g_u32ClientId, fFormat, pv, cb, &cb);
433	if (rc == VINF_BUFFER_OVERFLOW)
434	{
435	RTMemPageFree(pv, cbAllocated);
436	cbAllocated = cb = RT_ALIGN_32(cb, PAGE_SIZE);
437	pv = RTMemPageAllocZ(cbAllocated);
438	rc = VbglR3ClipboardReadData(g_u32ClientId, fFormat, pv, cb, &cb);
439	}
440	if (RT_FAILURE(rc))
441	RTMemPageFree(pv, cbAllocated);
442	}
443	if (RT_SUCCESS(rc))
444	{
445	VBoxServiceVerbose(4, "clipboard: read %u bytes\n", cb);
446
447	/*
448	* Convert the host clipboard data to PM clipboard data and set it.
449	*/
450	PVOID pvPM = VBoxServiceClipboardOs2ConvertToPM(fFormat, usFmt, pv, cb);
451	if (pvPM)
452	{
453	if (WinSetClipbrdData(g_habWorker, (ULONG)pvPM, usFmt, CFI_POINTER))
454	fSucceeded = true;
455	else
456	{
457	VBoxServiceError("VBoxServiceClipboardOS2RenderFormat: WinSetClipbrdData(,%p,%#x, CF_POINTER) failed, lasterror=%lx\n",
458	pvPM, usFmt, WinGetLastError(g_habWorker));
459	DosFreeMem(pvPM);
460	}
461	}
462	RTMemPageFree(pv, cbAllocated);
463	}
464	else
465	VBoxServiceError("VBoxServiceClipboardOS2RenderFormat: Failed to query / allocate data. rc=%Rrc cb=%#RX32\n", rc, cb);
466	}
467
468	/*
469	* Empty the clipboard on failure so we don't end up in any loops.
470	*/
471	if (!fSucceeded)
472	{
473	WinSetClipbrdOwner(g_habWorker, NULLHANDLE);
474	g_enmState = kClipboardState_Destroying;
475	WinEmptyClipbrd(g_habWorker);
476	g_enmState = kClipboardState_Polling;
477	g_fEmptyClipboard = true;
478	VBoxServiceClipboardOS2PollViewer();
479	}
480	}
481
482
483	static void VBoxServiceClipboardOS2SendDataToHost(uint32_t fFormat)
484	{
485	if (WinOpenClipbrd(g_habWorker))
486	{
487	PRTUTF16 pwszFree = NULL;
488	void *pv = NULL;
489	uint32_t cb = 0;
490
491	if (fFormat & VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT)
492	{
493	/* Got any odin32 unicode text? */
494	PVOID pvPM;
495	PCLIPHEADER pHdr = (PCLIPHEADER)WinQueryClipbrdData(g_habWorker, g_atomOdin32UnicodeText);
496	if ( pHdr
497	&& !memcmp(pHdr->achMagic, CLIPHEADER_MAGIC, sizeof(pHdr->achMagic)))
498	{
499	pv = pHdr + 1;
500	cb = pHdr->cbData;
501	}
502
503	/* Got any CF_TEXT? */
504	if ( !pv
505	&& (pvPM = (PVOID)WinQueryClipbrdData(g_habWorker, CF_TEXT)) != NULL)
506	{
507	char *pszUtf8;
508	int rc = RTStrCurrentCPToUtf8(&pszUtf8, (const char *)pvPM);
509	if (RT_SUCCESS(rc))
510	{
511	PRTUTF16 pwsz;
512	rc = RTStrToUtf16(pszUtf8, &pwsz);
513	if (RT_SUCCESS(rc))
514	{
515	pv = pwszFree = pwsz;
516	cb = (RTUtf16Len(pwsz) + 1) * sizeof(RTUTF16);
517	}
518	RTStrFree(pszUtf8);
519	}
520	}
521	}
522	if (!pv)
523	VBoxServiceError("VBoxServiceClipboardOS2SendDataToHost: couldn't find data for %#x\n", fFormat);
524
525	/*
526	* Now, sent whatever we've got to the host (it's waiting).
527	*/
528	VBoxServiceVerbose(4, "clipboard: writing %pv/%#d (fFormat=%#x)\n", pv, cb, fFormat);
529	VbglR3ClipboardWriteData(g_u32ClientId, fFormat, pv, cb);
530	RTUtf16Free(pwszFree);
531
532	WinCloseClipbrd(g_habWorker);
533	}
534	else
535	{
536	VBoxServiceError("VBoxServiceClipboardOS2SendDataToHost: WinOpenClipbrd failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
537	VBoxServiceVerbose(4, "clipboard: writing NULL/0 (fFormat=%x)\n", fFormat);
538	VbglR3ClipboardWriteData(g_u32ClientId, fFormat, NULL, 0);
539	}
540	}
541
542
543	/**
544	* Figure out what's on the clipboard and report it to the host.
545	*/
546	static void VBoxServiceClipboardOS2ReportFormats(void)
547	{
548	uint32_t fFormats = 0;
549	ULONG ulFormat = 0;
550	while ((ulFormat = WinEnumClipbrdFmts(g_habWorker, ulFormat)) != 0)
551	{
552	if ( ulFormat == CF_TEXT
553	\|\| ulFormat == g_atomOdin32UnicodeText)
554	fFormats \|= VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT;
555	/** @todo else bitmaps and stuff. */
556	}
557	VBoxServiceVerbose(4, "clipboard: reporting fFormats=%#x\n", fFormats);
558	VbglR3ClipboardReportFormats(g_u32ClientId, fFormats);
559	}
560
561
562	/**
563	* Poll the clipboard for changes.
564	*
565	* This is called both when we're the viewer and when we're
566	* falling back to polling. If something has changed it will
567	* notify the host.
568	*/
569	static void VBoxServiceClipboardOS2Poll(void)
570	{
571	if (WinOpenClipbrd(g_habWorker))
572	{
573	/*
574	* If our dummy is no longer there, something has actually changed,
575	* unless the clipboard is really empty.
576	*/
577	ULONG fFmtInfo;
578	if (!WinQueryClipbrdFmtInfo(g_habWorker, g_atomNothingChanged, &fFmtInfo))
579	{
580	if (WinEnumClipbrdFmts(g_habWorker, 0) != 0)
581	{
582	g_fEmptyClipboard = false;
583	VBoxServiceClipboardOS2ReportFormats();
584
585	/* inject the dummy */
586	PVOID pv;
587	APIRET rc = DosAllocSharedMem(&pv, NULL, 1, OBJ_GIVEABLE \| OBJ_GETTABLE \| PAG_READ \| PAG_WRITE \| PAG_COMMIT);
588	if (rc == NO_ERROR)
589	{
590	if (WinSetClipbrdData(g_habWorker, (ULONG)pv, g_atomNothingChanged, CFI_POINTER))
591	VBoxServiceVerbose(4, "clipboard: Added dummy item.\n");
592	else
593	{
594	VBoxServiceError("VBoxServiceClipboardOS2Poll: WinSetClipbrdData failed, lasterr=%#lx\n", WinGetLastError(g_habWorker));
595	DosFreeMem(pv);
596	}
597	}
598	else
599	VBoxServiceError("VBoxServiceClipboardOS2Poll: DosAllocSharedMem(,,1,) -> %ld\n", rc);
600	}
601	else if (!g_fEmptyClipboard)
602	{
603	g_fEmptyClipboard = true;
604	VBoxServiceVerbose(3, "Reporting empty clipboard\n");
605	VbglR3ClipboardReportFormats(g_u32ClientId, 0);
606	}
607	}
608	WinCloseClipbrd(g_habWorker);
609	}
610	else
611	VBoxServiceError("VBoxServiceClipboardOS2Poll: WinOpenClipbrd failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
612	}
613
614
615	/**
616	* The clipboard we owned was destroyed by someone else.
617	*/
618	static void VBoxServiceClipboardOS2Destroyed(void)
619	{
620	/* make sure we're no longer the owner. */
621	if (WinQueryClipbrdOwner(g_habWorker) == g_hwndWorker)
622	WinSetClipbrdOwner(g_habWorker, NULLHANDLE);
623
624	/* switch to polling state and notify the host. */
625	g_enmState = kClipboardState_Polling;
626	g_fEmptyClipboard = true;
627	VBoxServiceVerbose(3, "Reporting empty clipboard\n");
628	VbglR3ClipboardReportFormats(g_u32ClientId, 0);
629
630	VBoxServiceClipboardOS2PollViewer();
631	}
632
633
634	/**
635	* The window procedure for the object window.
636	*
637	* @returns Message result.
638	*
639	* @param hwnd The window handle.
640	* @param msg The message.
641	* @param mp1 Message parameter 1.
642	* @param mp2 Message parameter 2.
643	*/
644	static MRESULT EXPENTRY VBoxServiceClipboardOS2WinProc(HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
645	{
646	if (msg != WM_TIMER)
647	VBoxServiceVerbose(6, "VBoxServiceClipboardOS2WinProc: hwnd=%#lx msg=%#lx mp1=%#lx mp2=%#lx\n", hwnd, msg, mp1, mp2);
648
649	switch (msg)
650	{
651	/*
652	* Handle the two system defined messages for object windows.
653	*
654	* We'll just use the CREATE/DESTROY message to create that timer we're
655	* using for the viewer checks and polling fallback.
656	*/
657	case WM_CREATE:
658	g_idWorkerTimer = WinStartTimer(g_habWorker, hwnd, 1 /* id /, 1000 / 1 second */);
659	g_fEmptyClipboard = true;
660	g_enmState = kClipboardState_Polling;
661	return NULL; /* FALSE(/NULL) == Continue*/
662
663	case WM_DESTROY:
664	WinStopTimer(g_habWorker, hwnd, g_idWorkerTimer);
665	g_idWorkerTimer = ~0UL;
666	g_hwndWorker = NULLHANDLE;
667	break;
668
669	/*
670	* Clipboard viewer message - the content has been changed.
671	* This is sent after releasing the clipboard sem
672	* and during the WinSetClipbrdViewer call.
673	*/
674	case WM_DRAWCLIPBOARD:
675	if (g_enmState == kClipboardState_SettingViewer)
676	break;
677	AssertMsgBreak(g_enmState == kClipboardState_Viewer, ("g_enmState=%d\n", g_enmState));
678	VBoxServiceClipboardOS2Poll();
679	break;
680
681	/*
682	* Clipboard owner message - the content was replaced.
683	* This is sent by someone with an open clipboard, so don't try open it now.
684	*/
685	case WM_DESTROYCLIPBOARD:
686	if (g_enmState == kClipboardState_Destroying)
687	break; /* it's us doing the replacing, ignore. */
688	AssertMsgBreak(g_enmState == kClipboardState_Owner, ("g_enmState=%d\n", g_enmState));
689	VBoxServiceClipboardOS2Destroyed();
690	break;
691
692	/*
693	* Clipboard owner message - somebody is requesting us to render a format.
694	* This is called by someone which owns the clipboard, but that's fine.
695	*/
696	case WM_RENDERFMT:
697	AssertMsgBreak(g_enmState == kClipboardState_Owner, ("g_enmState=%d\n", g_enmState));
698	VBoxServiceClipboardOS2RenderFormat(SHORT1FROMMP(mp1));
699	break;
700
701	/*
702	* Clipboard owner message - we're about to quit and should render all formats.
703	*
704	* However, because we're lazy, we'll just ASSUME that since we're quitting
705	* we're probably about to shutdown or something and there is no point in
706	* doing anything here except for emptying the clipboard and removing
707	* ourselves as owner. Any failures at this point are silently ignored.
708	*/
709	case WM_RENDERALLFMTS:
710	WinOpenClipbrd(g_habWorker);
711	WinSetClipbrdOwner(g_habWorker, NULLHANDLE);
712	g_enmState = kClipboardState_Destroying;
713	WinEmptyClipbrd(g_habWorker);
714	g_enmState = kClipboardState_Polling;
715	g_fEmptyClipboard = true;
716	WinCloseClipbrd(g_habWorker);
717	break;
718
719	/*
720	* Listener message - the host has new formats to offer.
721	*/
722	case WM_USER + VBOX_SHARED_CLIPBOARD_HOST_MSG_FORMATS:
723	VBoxServiceClipboardOS2AdvertiseHostFormats(LONGFROMMP(mp1));
724	break;
725
726	/*
727	* Listener message - the host wish to read our clipboard data.
728	*/
729	case WM_USER + VBOX_SHARED_CLIPBOARD_HOST_MSG_READ_DATA:
730	VBoxServiceClipboardOS2SendDataToHost(LONGFROMMP(mp1));
731	break;
732
733	/*
734	* This is just a fallback polling strategy in case some other
735	* app is trying to view the clipboard too. We also use this
736	* to try recover from errors.
737	*
738	* Because the way the clipboard service works, we have to monitor
739	* it all the time and cannot get away with simpler solutions like
740	* synergy is employing (basically checking upon entering and leaving
741	* a desktop).
742	*/
743	case WM_TIMER:
744	if ( g_enmState != kClipboardState_Viewer
745	&& g_enmState != kClipboardState_Polling)
746	break;
747
748	/* Lost the position as clipboard viewer?*/
749	if (g_enmState == kClipboardState_Viewer)
750	{
751	if (WinQueryClipbrdViewer(g_habWorker) == hwnd)
752	break;
753	g_enmState = kClipboardState_Polling;
754	}
755
756	/* poll for changes */
757	VBoxServiceClipboardOS2Poll();
758	VBoxServiceClipboardOS2PollViewer();
759	break;
760
761
762	/*
763	* Clipboard owner messages dealing with owner drawn content.
764	* We shouldn't be seeing any of these.
765	*/
766	case WM_PAINTCLIPBOARD:
767	case WM_SIZECLIPBOARD:
768	case WM_HSCROLLCLIPBOARD:
769	case WM_VSCROLLCLIPBOARD:
770	AssertMsgFailed(("msg=%lx (%ld)\n", msg, msg));
771	break;
772
773	/*
774	* We shouldn't be seeing any other messages according to the docs.
775	* But for whatever reason, PM sends us a WM_ADJUSTWINDOWPOS message
776	* during WinCreateWindow. So, ignore that and assert on anything else.
777	*/
778	default:
779	AssertMsgFailed(("msg=%lx (%ld)\n", msg, msg));
780	case WM_ADJUSTWINDOWPOS:
781	break;
782	}
783	return NULL;
784	}
785
786
787	/**
788	* The listener thread.
789	*
790	* This thread is dedicated to listening for host messages and forwarding
791	* these to the worker thread (using PM).
792	*
793	* The thread will set g_fListenerOkay and signal its user event when it has
794	* completed initialization. In the case of init failure g_fListenerOkay will
795	* not be set.
796	*
797	* @returns Init error code or VINF_SUCCESS.
798	* @param ThreadSelf Our thread handle.
799	* @param pvUser Pointer to the clipboard service shutdown indicator.
800	*/
801	static DECLCALLBACK(int) VBoxServiceClipboardOS2Listener(RTTHREAD ThreadSelf, void *pvUser)
802	{
803	bool volatile pfShutdown = (bool volatile )pvUser;
804	int rc = VERR_GENERAL_FAILURE;
805	VBoxServiceVerbose(3, "VBoxServiceClipboardOS2Listener: ThreadSelf=%RTthrd\n", ThreadSelf);
806
807	g_habListener = WinInitialize(0);
808	if (g_habListener != NULLHANDLE)
809	{
810	g_hmqListener = WinCreateMsgQueue(g_habListener, 0);
811	if (g_hmqListener != NULLHANDLE)
812	{
813	/*
814	* Tell the worker thread that we're good.
815	*/
816	rc = VINF_SUCCESS;
817	ASMAtomicXchgBool(&g_fListenerOkay, true);
818	RTThreadUserSignal(ThreadSelf);
819	VBoxServiceVerbose(3, "VBoxServiceClipboardOS2Listener: Started successfully\n");
820
821	/*
822	* Loop until termination is requested.
823	*/
824	bool fQuit = false;
825	while (!*pfShutdown && !fQuit)
826	{
827	uint32_t Msg;
828	uint32_t fFormats;
829	rc = VbglR3ClipboardGetHostMsg(g_u32ClientId, &Msg, &fFormats);
830	if (RT_SUCCESS(rc))
831	{
832	VBoxServiceVerbose(3, "VBoxServiceClipboardOS2Listener: Msg=%#x fFormats=%#x\n", Msg, fFormats);
833	switch (Msg)
834	{
835	/*
836	* The host has announced available clipboard formats.
837	* Forward the information to the window, so it can later
838	* respond do WM_RENDERFORMAT message.
839	*/
840	case VBOX_SHARED_CLIPBOARD_HOST_MSG_FORMATS:
841	if (!WinPostMsg(g_hwndWorker, WM_USER + VBOX_SHARED_CLIPBOARD_HOST_MSG_FORMATS,
842	MPFROMLONG(fFormats), 0))
843	VBoxServiceError("WinPostMsg(%lx, FORMATS,,) failed, lasterr=%#lx\n",
844	g_hwndWorker, WinGetLastError(g_habListener));
845	break;
846
847	/*
848	* The host needs data in the specified format.
849	*/
850	case VBOX_SHARED_CLIPBOARD_HOST_MSG_READ_DATA:
851	if (!WinPostMsg(g_hwndWorker, WM_USER + VBOX_SHARED_CLIPBOARD_HOST_MSG_READ_DATA,
852	MPFROMLONG(fFormats), 0))
853	VBoxServiceError("WinPostMsg(%lx, READ_DATA,,) failed, lasterr=%#lx\n",
854	g_hwndWorker, WinGetLastError(g_habListener));
855	break;
856
857	/*
858	* The host is terminating.
859	*/
860	case VBOX_SHARED_CLIPBOARD_HOST_MSG_QUIT:
861	fQuit = true;
862	break;
863
864	default:
865	VBoxServiceVerbose(1, "VBoxServiceClipboardOS2Listener: Unknown message %RU32\n", Msg);
866	break;
867	}
868	}
869	else
870	{
871	if (*pfShutdown)
872	break;
873	VBoxServiceError("VbglR3ClipboardGetHostMsg failed, rc=%Rrc\n", rc);
874	RTThreadSleep(1000);
875	}
876	} /* the loop */
877
878	WinDestroyMsgQueue(g_hmqListener);
879	}
880	WinTerminate(g_habListener);
881	g_habListener = NULLHANDLE;
882	}
883
884	/* Signal our semaphore to make the worker catch on. */
885	RTThreadUserSignal(ThreadSelf);
886	VBoxServiceVerbose(3, "VBoxServiceClipboardOS2Listener: terminating, rc=%Rrc\n", rc);
887	return rc;
888	}
889
890
891	/** @copydoc VBOXSERVICE::pfnWorker */
892	static DECLCALLBACK(int) VBoxServiceClipboardOS2Worker(bool volatile *pfShutdown)
893	{
894	int rc = VERR_GENERAL_FAILURE;
895
896	/*
897	* Standard PM init.
898	*/
899	g_habWorker = RTThreadSelf() != g_ThreadCtrl ? WinInitialize(0) : g_habCtrl;
900	if (g_habWorker != NULLHANDLE)
901	{
902	g_hmqWorker = RTThreadSelf() != g_ThreadCtrl ? WinCreateMsgQueue(g_habWorker, 0) : g_hmqCtrl;
903	if (g_hmqWorker != NULLHANDLE)
904	{
905	/*
906	* Create the object window.
907	*/
908	if (WinRegisterClass(g_habWorker, (PCSZ)"VBoxServiceClipboardClass", VBoxServiceClipboardOS2WinProc, 0, 0))
909	{
910	g_hwndWorker = WinCreateWindow(HWND_OBJECT, /* hwndParent */
911	(PCSZ)"VBoxServiceClipboardClass", /* pszClass */
912	(PCSZ)"VirtualBox Clipboard Service", /* pszName */
913	0, /* flStyle */
914	0, 0, 0, 0, /* x, y, cx, cy */
915	NULLHANDLE, /* hwndOwner */
916	HWND_BOTTOM, /* hwndInsertBehind */
917	42, /* id */
918	NULL, /* pCtlData */
919	NULL); /* pPresParams */
920	if (g_hwndWorker != NULLHANDLE)
921	{
922	VBoxServiceVerbose(3, "g_hwndWorker=%#lx g_habWorker=%#lx g_hmqWorker=%#lx\n", g_hwndWorker, g_habWorker, g_hmqWorker);
923
924	/*
925	* Create the listener thread.
926	*/
927	g_fListenerOkay = false;
928	rc = RTThreadCreate(&g_ThreadListener, VBoxServiceClipboardOS2Listener, (void *)pfShutdown, 0,
929	RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "CLIPLISTEN");
930	if (RT_SUCCESS(rc))
931	{
932	RTThreadUserWait(g_ThreadListener, 30*1000);
933	RTThreadUserReset(g_ThreadListener);
934	if (!g_fListenerOkay)
935	RTThreadWait(g_ThreadListener, 60*1000, NULL);
936	if (g_fListenerOkay)
937	{
938	/*
939	* Tell the control thread that it can continue
940	* spawning services.
941	*/
942	RTThreadUserSignal(RTThreadSelf());
943
944	/*
945	* The PM event pump.
946	*/
947	VBoxServiceVerbose(2, "clipboard: Entering PM message loop.\n");
948	rc = VINF_SUCCESS;
949	QMSG qmsg;
950	while (WinGetMsg(g_habWorker, &qmsg, NULLHANDLE, NULLHANDLE, 0))
951	WinDispatchMsg(g_habWorker, &qmsg);
952	VBoxServiceVerbose(2, "clipboard: Exited PM message loop. pfShutdown=%RTbool\n", pfShutdown);
953
954	RTThreadWait(g_ThreadListener, 60*1000, NULL);
955	}
956	g_ThreadListener = NIL_RTTHREAD;
957	}
958
959	/*
960	* Got a WM_QUIT, clean up.
961	*/
962	if (g_hwndWorker != NULLHANDLE)
963	{
964	WinDestroyWindow(g_hwndWorker);
965	g_hwndWorker = NULLHANDLE;
966	}
967	}
968	else
969	VBoxServiceError("WinCreateWindow() failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
970	/* no class deregistration in PM. */
971	}
972	else
973	VBoxServiceError("WinRegisterClass() failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
974
975	if (g_hmqCtrl != g_hmqWorker)
976	WinDestroyMsgQueue(g_hmqWorker);
977	g_hmqWorker = NULLHANDLE;
978	}
979	else
980	VBoxServiceError("WinCreateMsgQueue(,0) failed, lasterr=%lx\n", WinGetLastError(g_habWorker));
981
982	if (g_habCtrl != g_habWorker)
983	WinTerminate(g_habWorker);
984	g_habWorker = NULLHANDLE;
985	}
986	else
987	VBoxServiceError("WinInitialize(0) failed, lasterr=%lx\n", WinGetLastError(NULLHANDLE));
988
989	return rc;
990	}
991
992
993	/** @copydoc VBOXSERVICE::pfnStop */
994	static DECLCALLBACK(void) VBoxServiceClipboardOS2Stop(void)
995	{
996	if ( g_hmqWorker != NULLHANDLE
997	&& !WinPostQueueMsg(g_hmqWorker, WM_QUIT, NULL, NULL))
998	VBoxServiceError("WinPostQueueMsg(g_hmqWorker, WM_QUIT, 0,0) failed, lasterr=%lx\n", WinGetLastError(g_habCtrl));
999	}
1000
1001
1002	/** @copydoc VBOXSERVICE::pfnTerm */
1003	static DECLCALLBACK(void) VBoxServiceClipboardOS2Term(void)
1004	{
1005	VBoxServiceVerbose(4, "clipboard: disconnecting %#x\n", g_u32ClientId);
1006	VbglR3ClipboardDisconnect(g_u32ClientId);
1007	g_u32ClientId = 0;
1008	WinDestroyMsgQueue(g_hmqCtrl);
1009	g_hmqCtrl = NULLHANDLE;
1010	WinTerminate(g_habCtrl);
1011	g_habCtrl = NULLHANDLE;
1012	}
1013
1014
1015	/**
1016	* The OS/2 'clipboard' service description.
1017	*/
1018	VBOXSERVICE g_Clipboard =
1019	{
1020	/* pszName. */
1021	"clipboard",
1022	/* pszDescription. */
1023	"Shared Clipboard",
1024	/* pszUsage. */
1025	""
1026	,
1027	/* pszOptions. */
1028	""
1029	,
1030	/* methods */
1031	VBoxServiceClipboardOS2PreInit,
1032	VBoxServiceClipboardOS2Option,
1033	VBoxServiceClipboardOS2Init,
1034	VBoxServiceClipboardOS2Worker,
1035	VBoxServiceClipboardOS2Stop,
1036	VBoxServiceClipboardOS2Term
1037	};
1038

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source: vbox/trunk/src/VBox/Additions/common/VBoxService/VBoxServiceClipboard-os2.cpp@ 41943

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