clipboard-common.cpp@ 86649

Last change on this file since 86649 was 86247, checked in by vboxsync, 4 years ago
SharedClipboard/win: Build fix (strict/win) and some cleanup.
Property eol-style set to `native` Property svn:eol-style set to `native` Property svn:keywords set to `Date Revision Author Id`
File size: 31.9 KB

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1	/* $Id: clipboard-common.cpp 86247 2020-09-23 16:44:40Z vboxsync $ */
2	/** @file
3	* Shared Clipboard: Some helper function for converting between the various eol.
4	*/
5
6	/*
7	* Includes contributions from François Revol
8	*
9	* Copyright (C) 2006-2020 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20	#define LOG_GROUP LOG_GROUP_SHARED_CLIPBOARD
21
22	#include <iprt/alloc.h>
23	#include <iprt/assert.h>
24	#include <iprt/semaphore.h>
25	#include <iprt/path.h>
26	#include <iprt/rand.h>
27	#include <iprt/utf16.h>
28
29	#include <iprt/formats/bmp.h>
30
31	#include <iprt/errcore.h>
32	#include <VBox/log.h>
33	#include <VBox/GuestHost/clipboard-helper.h>
34	#include <VBox/HostServices/VBoxClipboardSvc.h>
35
36
37	/*********************************************************************************************************************************
38	* Prototypes *
39	*********************************************************************************************************************************/
40	DECLINLINE(PSHCLEVENT) shclEventGet(PSHCLEVENTSOURCE pSource, SHCLEVENTID idEvent);
41
42
43	/*********************************************************************************************************************************
44	* Implementation *
45	*********************************************************************************************************************************/
46
47	/**
48	* Allocates a new event payload.
49	*
50	* @returns VBox status code.
51	* @param uID Payload ID to set for this payload. Useful for consequtive payloads.
52	* @param pvData Data block to associate to this payload.
53	* @param cbData Size (in bytes) of data block to associate.
54	* @param ppPayload Where to store the allocated event payload on success.
55	*/
56	int ShClPayloadAlloc(uint32_t uID, const void *pvData, uint32_t cbData,
57	PSHCLEVENTPAYLOAD *ppPayload)
58	{
59	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
60	AssertReturn(cbData > 0, VERR_INVALID_PARAMETER);
61
62	PSHCLEVENTPAYLOAD pPayload = (PSHCLEVENTPAYLOAD)RTMemAlloc(sizeof(SHCLEVENTPAYLOAD));
63	if (pPayload)
64	{
65	pPayload->pvData = RTMemDup(pvData, cbData);
66	if (pPayload->pvData)
67	{
68	pPayload->cbData = cbData;
69	pPayload->uID = uID;
70
71	*ppPayload = pPayload;
72	return VINF_SUCCESS;
73	}
74
75	RTMemFree(pPayload);
76	}
77	return VERR_NO_MEMORY;
78	}
79
80	/**
81	* Frees an event payload.
82	*
83	* @returns VBox status code.
84	* @param pPayload Event payload to free.
85	*/
86	void ShClPayloadFree(PSHCLEVENTPAYLOAD pPayload)
87	{
88	if (!pPayload)
89	return;
90
91	if (pPayload->pvData)
92	{
93	Assert(pPayload->cbData);
94	RTMemFree(pPayload->pvData);
95	pPayload->pvData = NULL;
96	}
97
98	pPayload->cbData = 0;
99	pPayload->uID = UINT32_MAX;
100
101	RTMemFree(pPayload);
102	}
103
104	/**
105	* Destroys an event, but doesn't free the memory.
106	*
107	* @param pEvent Event to destroy.
108	*/
109	static void shClEventTerm(PSHCLEVENT pEvent)
110	{
111	if (!pEvent)
112	return;
113
114	AssertMsgReturnVoid(pEvent->cRefs == 0, ("Event %RU32 still has %RU32 references\n",
115	pEvent->idEvent, pEvent->cRefs));
116
117	LogFlowFunc(("Event %RU32\n", pEvent->idEvent));
118
119	if (pEvent->hEvtMulSem != NIL_RTSEMEVENT)
120	{
121	RTSemEventMultiDestroy(pEvent->hEvtMulSem);
122	pEvent->hEvtMulSem = NIL_RTSEMEVENT;
123	}
124
125	ShClPayloadFree(pEvent->pPayload);
126
127	pEvent->idEvent = 0;
128	}
129
130	/**
131	* Creates a new event source.
132	*
133	* @returns VBox status code.
134	* @param pSource Event source to create.
135	* @param uID ID to use for event source.
136	*/
137	int ShClEventSourceCreate(PSHCLEVENTSOURCE pSource, SHCLEVENTSOURCEID uID)
138	{
139	LogFlowFunc(("pSource=%p, uID=%RU16\n", pSource, uID));
140	AssertPtrReturn(pSource, VERR_INVALID_POINTER);
141
142	RTListInit(&pSource->lstEvents);
143
144	pSource->uID = uID;
145	/* Choose a random event ID starting point. */
146	pSource->idNextEvent = RTRandU32Ex(1, VBOX_SHCL_MAX_EVENTS - 1);
147
148	LogFlowFuncLeaveRC(VINF_SUCCESS);
149	return VINF_SUCCESS;
150	}
151
152	/**
153	* Destroys an event source.
154	*
155	* @param pSource Event source to destroy.
156	*/
157	void ShClEventSourceDestroy(PSHCLEVENTSOURCE pSource)
158	{
159	if (!pSource)
160	return;
161
162	LogFlowFunc(("ID=%RU32\n", pSource->uID));
163
164	ShClEventSourceReset(pSource);
165
166	pSource->uID = UINT16_MAX;
167	pSource->idNextEvent = UINT32_MAX;
168	}
169
170	/**
171	* Resets an event source.
172	*
173	* @param pSource Event source to reset.
174	*/
175	void ShClEventSourceReset(PSHCLEVENTSOURCE pSource)
176	{
177	LogFlowFunc(("ID=%RU32\n", pSource->uID));
178
179	PSHCLEVENT pEvIt;
180	PSHCLEVENT pEvItNext;
181	RTListForEachSafe(&pSource->lstEvents, pEvIt, pEvItNext, SHCLEVENT, Node)
182	{
183	RTListNodeRemove(&pEvIt->Node);
184
185	shClEventTerm(pEvIt);
186
187	RTMemFree(pEvIt);
188	pEvIt = NULL;
189	}
190	}
191
192	/**
193	* Generates a new event ID for a specific event source and registers it.
194	*
195	* @returns New event ID generated, or NIL_SHCLEVENTID on error.
196	* @param pSource Event source to generate event for.
197	*/
198	SHCLEVENTID ShClEventIdGenerateAndRegister(PSHCLEVENTSOURCE pSource)
199	{
200	AssertPtrReturn(pSource, NIL_SHCLEVENTID);
201
202	/*
203	* Allocate an event.
204	*/
205	PSHCLEVENT pEvent = (PSHCLEVENT)RTMemAllocZ(sizeof(SHCLEVENT));
206	AssertReturn(pEvent, NIL_SHCLEVENTID);
207	int rc = RTSemEventMultiCreate(&pEvent->hEvtMulSem);
208	AssertRCReturnStmt(rc, RTMemFree(pEvent), NIL_SHCLEVENTID);
209
210	/*
211	* Allocate an unique event ID.
212	*/
213	for (uint32_t cTries = 0;; cTries++)
214	{
215	SHCLEVENTID idEvent = ++pSource->idNextEvent;
216	if (idEvent < VBOX_SHCL_MAX_EVENTS)
217	{ /* likely */ }
218	else
219	pSource->idNextEvent = idEvent = 1; /* zero == error, remember! */
220
221	if (shclEventGet(pSource, idEvent) == NULL)
222	{
223	pEvent->idEvent = idEvent;
224	RTListAppend(&pSource->lstEvents, &pEvent->Node);
225
226	LogFlowFunc(("uSource=%RU16: New event: %#x\n", pSource->uID, idEvent));
227	return idEvent;
228	}
229
230	AssertBreak(cTries < 4096);
231	}
232
233	AssertMsgFailed(("Unable to register a new event ID for event source %RU16\n", pSource->uID));
234
235	RTMemFree(pEvent);
236	return NIL_SHCLEVENTID;
237	}
238
239	/**
240	* Returns a specific event of a event source. Inlined version.
241	*
242	* @returns Pointer to event if found, or NULL if not found.
243	* @param pSource Event source to get event from.
244	* @param uID Event ID to get.
245	*/
246	DECLINLINE(PSHCLEVENT) shclEventGet(PSHCLEVENTSOURCE pSource, SHCLEVENTID idEvent)
247	{
248	PSHCLEVENT pEvent;
249	RTListForEach(&pSource->lstEvents, pEvent, SHCLEVENT, Node)
250	{
251	if (pEvent->idEvent == idEvent)
252	return pEvent;
253	}
254
255	return NULL;
256	}
257
258	/**
259	* Returns a specific event of a event source.
260	*
261	* @returns Pointer to event if found, or NULL if not found.
262	* @param pSource Event source to get event from.
263	* @param uID Event ID to get.
264	*/
265	PSHCLEVENT ShClEventGet(PSHCLEVENTSOURCE pSource, SHCLEVENTID idEvent)
266	{
267	return shclEventGet(pSource, idEvent);
268	}
269
270	/**
271	* Returns the last (newest) event ID which has been registered for an event source.
272	*
273	* @returns Last registered event ID, or 0 if not found.
274	* @param pSource Event source to get last registered event from.
275	*/
276	SHCLEVENTID ShClEventGetLast(PSHCLEVENTSOURCE pSource)
277	{
278	AssertPtrReturn(pSource, 0);
279	PSHCLEVENT pEvent = RTListGetLast(&pSource->lstEvents, SHCLEVENT, Node);
280	if (pEvent)
281	return pEvent->idEvent;
282
283	return 0;
284	}
285
286	/**
287	* Returns the current reference count for a specific event.
288	*
289	* @returns Reference count.
290	* @param pSource Event source the specific event is part of.
291	* @param idEvent Event ID to return reference count for.
292	*/
293	uint32_t ShClEventGetRefs(PSHCLEVENTSOURCE pSource, SHCLEVENTID idEvent)
294	{
295	PSHCLEVENT pEvent = shclEventGet(pSource, idEvent);
296	if (pEvent)
297	return pEvent->cRefs;
298
299	AssertMsgFailed(("No event with %RU32\n", idEvent));
300	return 0;
301	}
302
303	/**
304	* Detaches a payload from an event, internal version.
305	*
306	* @returns Pointer to the detached payload. Can be NULL if the payload has no payload.
307	* @param pEvent Event to detach payload for.
308	*/
309	static PSHCLEVENTPAYLOAD shclEventPayloadDetachInternal(PSHCLEVENT pEvent)
310	{
311	#ifdef VBOX_STRICT
312	AssertPtrReturn(pEvent, NULL);
313	#endif
314
315	PSHCLEVENTPAYLOAD pPayload = pEvent->pPayload;
316
317	pEvent->pPayload = NULL;
318
319	return pPayload;
320	}
321
322	/**
323	* Unregisters an event.
324	*
325	* @returns VBox status code.
326	* @param pSource Event source to unregister event for.
327	* @param uID Event ID to unregister.
328	*/
329	int ShClEventUnregister(PSHCLEVENTSOURCE pSource, SHCLEVENTID uID)
330	{
331	AssertPtrReturn(pSource, VERR_INVALID_POINTER);
332
333	int rc;
334
335	LogFlowFunc(("uSource=%RU16, uEvent=%RU32\n", pSource->uID, uID));
336
337	PSHCLEVENT pEvent = shclEventGet(pSource, uID);
338	if (pEvent)
339	{
340	LogFlowFunc(("Event %RU32\n", pEvent->idEvent));
341
342	RTListNodeRemove(&pEvent->Node);
343
344	shClEventTerm(pEvent);
345
346	RTMemFree(pEvent);
347	pEvent = NULL;
348
349	rc = VINF_SUCCESS;
350	}
351	else
352	rc = VERR_NOT_FOUND;
353
354	LogFlowFuncLeaveRC(rc);
355	return rc;
356	}
357
358	/**
359	* Waits for an event to get signalled.
360	*
361	* @returns VBox status code.
362	* @param pSource Event source that contains the event to wait for.
363	* @param uID Event ID to wait for.
364	* @param uTimeoutMs Timeout (in ms) to wait.
365	* @param ppPayload Where to store the (allocated) event payload on success. Needs to be free'd with
366	* SharedClipboardPayloadFree(). Optional.
367	*/
368	int ShClEventWait(PSHCLEVENTSOURCE pSource, SHCLEVENTID uID, RTMSINTERVAL uTimeoutMs,
369	PSHCLEVENTPAYLOAD* ppPayload)
370	{
371	AssertPtrReturn(pSource, VERR_INVALID_POINTER);
372	/** ppPayload is optional. */
373
374	LogFlowFuncEnter();
375
376	int rc;
377
378	PSHCLEVENT pEvent = shclEventGet(pSource, uID);
379	if (pEvent)
380	{
381	rc = RTSemEventMultiWait(pEvent->hEvtMulSem, uTimeoutMs);
382	if (RT_SUCCESS(rc))
383	{
384	if (ppPayload)
385	{
386	/* Make sure to detach payload here, as the caller now owns the data. */
387	*ppPayload = shclEventPayloadDetachInternal(pEvent);
388	}
389	}
390	}
391	else
392	rc = VERR_NOT_FOUND;
393
394	LogFlowFuncLeaveRC(rc);
395	return rc;
396	}
397
398	/**
399	* Retains an event by increasing its reference count.
400	*
401	* @returns New reference count, or UINT32_MAX if failed.
402	* @param pSource Event source of event to retain.
403	* @param idEvent ID of event to retain.
404	*/
405	uint32_t ShClEventRetain(PSHCLEVENTSOURCE pSource, SHCLEVENTID idEvent)
406	{
407	PSHCLEVENT pEvent = shclEventGet(pSource, idEvent);
408	if (!pEvent)
409	{
410	AssertFailed();
411	return UINT32_MAX;
412	}
413
414	AssertReturn(pEvent->cRefs < 64, UINT32_MAX); /* Sanity. Yeah, not atomic. */
415
416	return ASMAtomicIncU32(&pEvent->cRefs);
417	}
418
419	/**
420	* Releases an event by decreasing its reference count.
421	*
422	* @returns New reference count, or UINT32_MAX if failed.
423	* @param pSource Event source of event to release.
424	* @param idEvent ID of event to release.
425	*/
426	uint32_t ShClEventRelease(PSHCLEVENTSOURCE pSource, SHCLEVENTID idEvent)
427	{
428	PSHCLEVENT pEvent = shclEventGet(pSource, idEvent);
429	if (!pEvent)
430	{
431	AssertFailed();
432	return UINT32_MAX;
433	}
434
435	AssertReturn(pEvent->cRefs, UINT32_MAX); /* Sanity. Yeah, not atomic. */
436
437	return ASMAtomicDecU32(&pEvent->cRefs);
438	}
439
440	/**
441	* Signals an event.
442	*
443	* @returns VBox status code.
444	* @param pSource Event source of event to signal.
445	* @param uID Event ID to signal.
446	* @param pPayload Event payload to associate. Takes ownership. Optional.
447	*
448	* @note Caller must enter crit sect protecting the event source!
449	*/
450	int ShClEventSignal(PSHCLEVENTSOURCE pSource, SHCLEVENTID uID,
451	PSHCLEVENTPAYLOAD pPayload)
452	{
453	AssertPtrReturn(pSource, VERR_INVALID_POINTER);
454
455	int rc;
456
457	LogFlowFunc(("uSource=%RU16, uEvent=%RU32\n", pSource->uID, uID));
458
459	PSHCLEVENT pEvent = shclEventGet(pSource, uID);
460	if (pEvent)
461	{
462	Assert(pEvent->pPayload == NULL);
463
464	pEvent->pPayload = pPayload;
465
466	rc = RTSemEventMultiSignal(pEvent->hEvtMulSem);
467	}
468	else
469	rc = VERR_NOT_FOUND;
470
471	LogFlowFuncLeaveRC(rc);
472	return rc;
473	}
474
475	int ShClUtf16LenUtf8(PCRTUTF16 pcwszSrc, size_t cwcSrc, size_t *pchLen)
476	{
477	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
478	AssertPtrReturn(pchLen, VERR_INVALID_POINTER);
479
480	size_t chLen = 0;
481	int rc = RTUtf16CalcUtf8LenEx(pcwszSrc, cwcSrc, &chLen);
482	if (RT_SUCCESS(rc))
483	*pchLen = chLen;
484	return rc;
485	}
486
487	int ShClConvUtf16CRLFToUtf8LF(PCRTUTF16 pcwszSrc, size_t cwcSrc,
488	char pszBuf, size_t cbBuf, size_t pcbLen)
489	{
490	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
491	AssertReturn (cwcSrc, VERR_INVALID_PARAMETER);
492	AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
493	AssertPtrReturn(pcbLen, VERR_INVALID_POINTER);
494
495	int rc;
496
497	PRTUTF16 pwszTmp = NULL;
498	size_t cchTmp = 0;
499
500	size_t cbLen = 0;
501
502	/* How long will the converted text be? */
503	rc = ShClUtf16CRLFLenUtf8(pcwszSrc, cwcSrc, &cchTmp);
504	if (RT_SUCCESS(rc))
505	{
506	cchTmp++; /* Add space for terminator. */
507
508	pwszTmp = (PRTUTF16)RTMemAlloc(cchTmp * sizeof(RTUTF16));
509	if (pwszTmp)
510	{
511	rc = ShClConvUtf16CRLFToLF(pcwszSrc, cwcSrc, pwszTmp, cchTmp);
512	if (RT_SUCCESS(rc))
513	rc = RTUtf16ToUtf8Ex(pwszTmp + 1, cchTmp - 1, &pszBuf, cbBuf, &cbLen);
514
515	RTMemFree(reinterpret_cast<void *>(pwszTmp));
516	}
517	else
518	rc = VERR_NO_MEMORY;
519	}
520
521	if (RT_SUCCESS(rc))
522	{
523	*pcbLen = cbLen;
524	}
525
526	LogFlowFuncLeaveRC(rc);
527	return rc;
528	}
529
530	int ShClConvUtf16LFToCRLFA(PCRTUTF16 pcwszSrc, size_t cwcSrc,
531	PRTUTF16 ppwszDst, size_t pcwDst)
532	{
533	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
534	AssertPtrReturn(ppwszDst, VERR_INVALID_POINTER);
535	AssertPtrReturn(pcwDst, VERR_INVALID_POINTER);
536
537	PRTUTF16 pwszDst = NULL;
538	size_t cchDst;
539
540	int rc = ShClUtf16LFLenUtf8(pcwszSrc, cwcSrc, &cchDst);
541	if (RT_SUCCESS(rc))
542	{
543	pwszDst = (PRTUTF16)RTMemAlloc((cchDst + 1 /* Leave space for terminator /) sizeof(RTUTF16));
544	if (pwszDst)
545	{
546	rc = ShClConvUtf16LFToCRLF(pcwszSrc, cwcSrc, pwszDst, cchDst + 1 /* Include terminator */);
547	}
548	else
549	rc = VERR_NO_MEMORY;
550	}
551
552	if (RT_SUCCESS(rc))
553	{
554	*ppwszDst = pwszDst;
555	*pcwDst = cchDst;
556	}
557	else
558	RTMemFree(pwszDst);
559
560	LogFlowFuncLeaveRC(rc);
561	return rc;
562	}
563
564	int ShClConvUtf8LFToUtf16CRLF(const char *pcszSrc, size_t cbSrc,
565	PRTUTF16 ppwszDst, size_t pcwDst)
566	{
567	AssertPtrReturn(pcszSrc, VERR_INVALID_POINTER);
568	AssertReturn(cbSrc, VERR_INVALID_PARAMETER);
569	AssertPtrReturn(ppwszDst, VERR_INVALID_POINTER);
570	AssertPtrReturn(pcwDst, VERR_INVALID_POINTER);
571
572	/* Intermediate conversion to UTF-16. */
573	size_t cwcTmp;
574	PRTUTF16 pwcTmp = NULL;
575	int rc = RTStrToUtf16Ex(pcszSrc, cbSrc, &pwcTmp, 0, &cwcTmp);
576	if (RT_SUCCESS(rc))
577	{
578	rc = ShClConvUtf16LFToCRLFA(pwcTmp, cwcTmp, ppwszDst, pcwDst);
579	RTUtf16Free(pwcTmp);
580	}
581
582	LogFlowFuncLeaveRC(rc);
583	return rc;
584	}
585
586	int ShClConvLatin1LFToUtf16CRLF(const char *pcszSrc, size_t cbSrc,
587	PRTUTF16 ppwszDst, size_t pcwDst)
588	{
589	AssertPtrReturn(pcszSrc, VERR_INVALID_POINTER);
590	AssertReturn(cbSrc, VERR_INVALID_PARAMETER);
591	AssertPtrReturn(ppwszDst, VERR_INVALID_POINTER);
592	AssertPtrReturn(pcwDst, VERR_INVALID_POINTER);
593
594	int rc = VINF_SUCCESS;
595
596	PRTUTF16 pwszDst = NULL;
597
598	/* Calculate the space needed. */
599	unsigned cwDst = 0;
600	for (unsigned i = 0; i < cbSrc && pcszSrc[i] != '\0'; ++i)
601	{
602	if (pcszSrc[i] == VBOX_SHCL_LINEFEED)
603	cwDst += 2; /* Space for VBOX_SHCL_CARRIAGERETURN + VBOX_SHCL_LINEFEED. */
604	else
605	++cwDst;
606	}
607
608	pwszDst = (PRTUTF16)RTMemAlloc((cwDst + 1 /* Leave space for the terminator /) sizeof(RTUTF16));
609	if (!pwszDst)
610	rc = VERR_NO_MEMORY;
611
612	/* Do the conversion, bearing in mind that Latin-1 expands "naturally" to UTF-16. */
613	if (RT_SUCCESS(rc))
614	{
615	for (unsigned i = 0, j = 0; i < cbSrc; ++i, ++j)
616	{
617	if (pcszSrc[i] != VBOX_SHCL_LINEFEED)
618	pwszDst[j] = pcszSrc[i];
619	else
620	{
621	pwszDst[j] = VBOX_SHCL_CARRIAGERETURN;
622	pwszDst[j + 1] = VBOX_SHCL_LINEFEED;
623	++j;
624	}
625	}
626
627	pwszDst[cwDst] = '\0'; /* Make sure we are zero-terminated. */
628	}
629
630	if (RT_SUCCESS(rc))
631	{
632	*ppwszDst = pwszDst;
633	*pcwDst = cwDst;
634	}
635	else
636	RTMemFree(pwszDst);
637
638	LogFlowFuncLeaveRC(rc);
639	return rc;
640	}
641
642	int ShClConvUtf16ToUtf8HTML(PCRTUTF16 pcwszSrc, size_t cwcSrc, char *ppszDst, size_t pcbDst)
643	{
644	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
645	AssertReturn (cwcSrc, VERR_INVALID_PARAMETER);
646	AssertPtrReturn(ppszDst, VERR_INVALID_POINTER);
647	AssertPtrReturn(pcbDst, VERR_INVALID_POINTER);
648
649	int rc = VINF_SUCCESS;
650
651	size_t cwTmp = cwcSrc;
652	PCRTUTF16 pwTmp = pcwszSrc;
653
654	char *pchDst = NULL;
655	size_t cbDst = 0;
656
657	size_t i = 0;
658	while (i < cwTmp)
659	{
660	/* Find zero symbol (end of string). */
661	for (; i < cwTmp && pcwszSrc[i] != 0; i++)
662	;
663
664	/* Convert found string. */
665	char *psz = NULL;
666	size_t cch = 0;
667	rc = RTUtf16ToUtf8Ex(pwTmp, cwTmp, &psz, pwTmp - pcwszSrc, &cch);
668	if (RT_FAILURE(rc))
669	break;
670
671	/* Append new substring. */
672	char pchNew = (char )RTMemRealloc(pchDst, cbDst + cch + 1);
673	if (!pchNew)
674	{
675	RTStrFree(psz);
676	rc = VERR_NO_MEMORY;
677	break;
678	}
679
680	pchDst = pchNew;
681	memcpy(pchDst + cbDst, psz, cch + 1);
682
683	RTStrFree(psz);
684
685	cbDst += cch + 1;
686
687	/* Skip zero symbols. */
688	for (; i < cwTmp && pcwszSrc[i] == 0; i++)
689	;
690
691	/* Remember start of string. */
692	pwTmp += i;
693	}
694
695	if (RT_SUCCESS(rc))
696	{
697	*ppszDst = pchDst;
698	*pcbDst = cbDst;
699
700	return VINF_SUCCESS;
701	}
702
703	RTMemFree(pchDst);
704
705	LogFlowFuncLeaveRC(rc);
706	return rc;
707	}
708
709	int ShClUtf16LFLenUtf8(PCRTUTF16 pcwszSrc, size_t cwSrc, size_t *pchLen)
710	{
711	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
712	AssertPtrReturn(pchLen, VERR_INVALID_POINTER);
713
714	AssertMsgReturn(pcwszSrc[0] != VBOX_SHCL_UTF16BEMARKER,
715	("Big endian UTF-16 not supported yet\n"), VERR_NOT_SUPPORTED);
716
717	size_t cLen = 0;
718
719	/* Don't copy the endian marker. */
720	size_t i = pcwszSrc[0] == VBOX_SHCL_UTF16LEMARKER ? 1 : 0;
721
722	/* Calculate the size of the destination text string. */
723	/* Is this Utf16 or Utf16-LE? */
724	for (; i < cwSrc; ++i, ++cLen)
725	{
726	/* Check for a single line feed */
727	if (pcwszSrc[i] == VBOX_SHCL_LINEFEED)
728	++cLen;
729	#ifdef RT_OS_DARWIN
730	/* Check for a single carriage return (MacOS) */
731	if (pcwszSrc[i] == VBOX_SHCL_CARRIAGERETURN)
732	++cLen;
733	#endif
734	if (pcwszSrc[i] == 0)
735	{
736	/* Don't count this, as we do so below. */
737	break;
738	}
739	}
740
741	*pchLen = cLen;
742
743	LogFlowFuncLeaveRC(VINF_SUCCESS);
744	return VINF_SUCCESS;
745	}
746
747	int ShClUtf16CRLFLenUtf8(PCRTUTF16 pcwszSrc, size_t cwSrc, size_t *pchLen)
748	{
749	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
750	AssertReturn(cwSrc, VERR_INVALID_PARAMETER);
751	AssertPtrReturn(pchLen, VERR_INVALID_POINTER);
752
753	AssertMsgReturn(pcwszSrc[0] != VBOX_SHCL_UTF16BEMARKER,
754	("Big endian UTF-16 not supported yet\n"), VERR_NOT_SUPPORTED);
755
756	size_t cLen = 0;
757
758	/* Calculate the size of the destination text string. */
759	/* Is this Utf16 or Utf16-LE? */
760	if (pcwszSrc[0] == VBOX_SHCL_UTF16LEMARKER)
761	cLen = 0;
762	else
763	cLen = 1;
764
765	for (size_t i = 0; i < cwSrc; ++i, ++cLen)
766	{
767	if ( (i + 1 < cwSrc)
768	&& (pcwszSrc[i] == VBOX_SHCL_CARRIAGERETURN)
769	&& (pcwszSrc[i + 1] == VBOX_SHCL_LINEFEED))
770	{
771	++i;
772	}
773	if (pcwszSrc[i] == 0)
774	break;
775	}
776
777	*pchLen = cLen;
778
779	LogFlowFuncLeaveRC(VINF_SUCCESS);
780	return VINF_SUCCESS;
781	}
782
783	int ShClConvUtf16LFToCRLF(PCRTUTF16 pcwszSrc, size_t cwcSrc, PRTUTF16 pu16Dst, size_t cwDst)
784	{
785	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
786	AssertPtrReturn(pu16Dst, VERR_INVALID_POINTER);
787	AssertReturn(cwDst, VERR_INVALID_PARAMETER);
788
789	AssertMsgReturn(pcwszSrc[0] != VBOX_SHCL_UTF16BEMARKER,
790	("Big endian UTF-16 not supported yet\n"), VERR_NOT_SUPPORTED);
791
792	int rc = VINF_SUCCESS;
793
794	/* Don't copy the endian marker. */
795	size_t i = pcwszSrc[0] == VBOX_SHCL_UTF16LEMARKER ? 1 : 0;
796	size_t j = 0;
797
798	for (; i < cwcSrc; ++i, ++j)
799	{
800	/* Don't copy the null byte, as we add it below. */
801	if (pcwszSrc[i] == 0)
802	break;
803
804	/* Not enough space in destination? */
805	if (j == cwDst)
806	{
807	rc = VERR_BUFFER_OVERFLOW;
808	break;
809	}
810
811	if (pcwszSrc[i] == VBOX_SHCL_LINEFEED)
812	{
813	pu16Dst[j] = VBOX_SHCL_CARRIAGERETURN;
814	++j;
815
816	/* Not enough space in destination? */
817	if (j == cwDst)
818	{
819	rc = VERR_BUFFER_OVERFLOW;
820	break;
821	}
822	}
823	#ifdef RT_OS_DARWIN
824	/* Check for a single carriage return (MacOS) */
825	else if (pcwszSrc[i] == VBOX_SHCL_CARRIAGERETURN)
826	{
827	/* Set CR.r */
828	pu16Dst[j] = VBOX_SHCL_CARRIAGERETURN;
829	++j;
830
831	/* Not enough space in destination? */
832	if (j == cwDst)
833	{
834	rc = VERR_BUFFER_OVERFLOW;
835	break;
836	}
837
838	/* Add line feed. */
839	pu16Dst[j] = VBOX_SHCL_LINEFEED;
840	continue;
841	}
842	#endif
843	pu16Dst[j] = pcwszSrc[i];
844	}
845
846	if (j == cwDst)
847	rc = VERR_BUFFER_OVERFLOW;
848
849	if (RT_SUCCESS(rc))
850	{
851	/* Add terminator. */
852	pu16Dst[j] = 0;
853	}
854
855	LogFlowFuncLeaveRC(rc);
856	return rc;
857	}
858
859	int ShClConvUtf16CRLFToLF(PCRTUTF16 pcwszSrc, size_t cwcSrc, PRTUTF16 pu16Dst, size_t cwDst)
860	{
861	AssertPtrReturn(pcwszSrc, VERR_INVALID_POINTER);
862	AssertReturn(cwcSrc, VERR_INVALID_PARAMETER);
863	AssertPtrReturn(pu16Dst, VERR_INVALID_POINTER);
864	AssertReturn(cwDst, VERR_INVALID_PARAMETER);
865
866	AssertMsgReturn(pcwszSrc[0] != VBOX_SHCL_UTF16BEMARKER,
867	("Big endian UTF-16 not supported yet\n"), VERR_NOT_SUPPORTED);
868
869	/* Prepend the Utf16 byte order marker if it is missing. */
870	size_t cwDstPos;
871	if (pcwszSrc[0] == VBOX_SHCL_UTF16LEMARKER)
872	{
873	cwDstPos = 0;
874	}
875	else
876	{
877	pu16Dst[0] = VBOX_SHCL_UTF16LEMARKER;
878	cwDstPos = 1;
879	}
880
881	for (size_t i = 0; i < cwcSrc; ++i, ++cwDstPos)
882	{
883	if (pcwszSrc[i] == 0)
884	break;
885
886	if (cwDstPos == cwDst)
887	return VERR_BUFFER_OVERFLOW;
888
889	if ( (i + 1 < cwcSrc)
890	&& (pcwszSrc[i] == VBOX_SHCL_CARRIAGERETURN)
891	&& (pcwszSrc[i + 1] == VBOX_SHCL_LINEFEED))
892	{
893	++i;
894	}
895
896	pu16Dst[cwDstPos] = pcwszSrc[i];
897	}
898
899	if (cwDstPos == cwDst)
900	return VERR_BUFFER_OVERFLOW;
901
902	/* Add terminating zero. */
903	pu16Dst[cwDstPos] = 0;
904
905	LogFlowFuncLeaveRC(VINF_SUCCESS);
906	return VINF_SUCCESS;
907	}
908
909	int ShClDibToBmp(const void pvSrc, size_t cbSrc, void ppvDest, size_t pcbDest)
910	{
911	AssertPtrReturn(pvSrc, VERR_INVALID_POINTER);
912	AssertReturn(cbSrc, VERR_INVALID_PARAMETER);
913	AssertPtrReturn(ppvDest, VERR_INVALID_POINTER);
914	AssertPtrReturn(pcbDest, VERR_INVALID_POINTER);
915
916	PBMPWIN3XINFOHDR coreHdr = (PBMPWIN3XINFOHDR)pvSrc;
917	/** @todo Support all the many versions of the DIB headers. */
918	if ( cbSrc < sizeof(BMPWIN3XINFOHDR)
919	\|\| RT_LE2H_U32(coreHdr->cbSize) < sizeof(BMPWIN3XINFOHDR)
920	\|\| RT_LE2H_U32(coreHdr->cbSize) != sizeof(BMPWIN3XINFOHDR))
921	{
922	return VERR_INVALID_PARAMETER;
923	}
924
925	size_t offPixel = sizeof(BMPFILEHDR)
926	+ RT_LE2H_U32(coreHdr->cbSize)
927	+ RT_LE2H_U32(coreHdr->cClrUsed) * sizeof(uint32_t);
928	if (cbSrc < offPixel)
929	return VERR_INVALID_PARAMETER;
930
931	size_t cbDst = sizeof(BMPFILEHDR) + cbSrc;
932
933	void *pvDest = RTMemAlloc(cbDst);
934	if (!pvDest)
935	return VERR_NO_MEMORY;
936
937	PBMPFILEHDR fileHdr = (PBMPFILEHDR)pvDest;
938
939	fileHdr->uType = BMP_HDR_MAGIC;
940	fileHdr->cbFileSize = (uint32_t)RT_H2LE_U32(cbDst);
941	fileHdr->Reserved1 = 0;
942	fileHdr->Reserved2 = 0;
943	fileHdr->offBits = (uint32_t)RT_H2LE_U32(offPixel);
944
945	memcpy((uint8_t *)pvDest + sizeof(BMPFILEHDR), pvSrc, cbSrc);
946
947	*ppvDest = pvDest;
948	*pcbDest = cbDst;
949
950	LogFlowFuncLeaveRC(VINF_SUCCESS);
951	return VINF_SUCCESS;
952	}
953
954	int ShClBmpGetDib(const void pvSrc, size_t cbSrc, const void ppvDest, size_t pcbDest)
955	{
956	AssertPtrReturn(pvSrc, VERR_INVALID_POINTER);
957	AssertReturn(cbSrc, VERR_INVALID_PARAMETER);
958	AssertPtrReturn(ppvDest, VERR_INVALID_POINTER);
959	AssertPtrReturn(pcbDest, VERR_INVALID_POINTER);
960
961	PBMPFILEHDR pBmpHdr = (PBMPFILEHDR)pvSrc;
962	if ( cbSrc < sizeof(BMPFILEHDR)
963	\|\| pBmpHdr->uType != BMP_HDR_MAGIC
964	\|\| RT_LE2H_U32(pBmpHdr->cbFileSize) != cbSrc)
965	{
966	return VERR_INVALID_PARAMETER;
967	}
968
969	ppvDest = ((uint8_t )pvSrc) + sizeof(BMPFILEHDR);
970	*pcbDest = cbSrc - sizeof(BMPFILEHDR);
971
972	return VINF_SUCCESS;
973	}
974
975	#ifdef LOG_ENABLED
976
977	int ShClDbgDumpHtml(const char *pcszSrc, size_t cbSrc)
978	{
979	int rc = VINF_SUCCESS;
980	char pszBuf = (char )RTMemTmpAllocZ(cbSrc + 1);
981	if (pszBuf)
982	{
983	memcpy(pszBuf, pcszSrc, cbSrc);
984	pszBuf[cbSrc] = '\0';
985	for (size_t off = 0; off < cbSrc; ++off)
986	if (pszBuf[off] == '\n' \|\| pszBuf[off] == '\r')
987	pszBuf[off] = ' ';
988	LogFunc(("Removed \\r\\n: %s\n", pszBuf));
989	RTMemTmpFree(pszBuf);
990	}
991	else
992	rc = VERR_NO_MEMORY;
993	return rc;
994	}
995
996	void ShClDbgDumpData(const void *pv, size_t cb, SHCLFORMAT uFormat)
997	{
998	if (LogIsEnabled())
999	{
1000	if (uFormat & VBOX_SHCL_FMT_UNICODETEXT)
1001	{
1002	LogFunc(("VBOX_SHCL_FMT_UNICODETEXT:\n"));
1003	if (pv && cb)
1004	LogFunc(("%ls\n", pv));
1005	else
1006	LogFunc(("%p %zu\n", pv, cb));
1007	}
1008	else if (uFormat & VBOX_SHCL_FMT_BITMAP)
1009	LogFunc(("VBOX_SHCL_FMT_BITMAP\n"));
1010	else if (uFormat & VBOX_SHCL_FMT_HTML)
1011	{
1012	LogFunc(("VBOX_SHCL_FMT_HTML:\n"));
1013	if (pv && cb)
1014	{
1015	LogFunc(("%s\n", pv));
1016	ShClDbgDumpHtml((const char *)pv, cb);
1017	}
1018	else
1019	LogFunc(("%p %zu\n", pv, cb));
1020	}
1021	else
1022	LogFunc(("Invalid format %02X\n", uFormat));
1023	}
1024	}
1025
1026	#endif /* LOG_ENABLED */
1027
1028	/**
1029	* Translates a Shared Clipboard host function number to a string.
1030	*
1031	* @returns Function ID string name.
1032	* @param uFn The function to translate.
1033	*/
1034	const char *ShClHostFunctionToStr(uint32_t uFn)
1035	{
1036	switch (uFn)
1037	{
1038	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_SET_MODE);
1039	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_SET_TRANSFER_MODE);
1040	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_SET_HEADLESS);
1041	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_CANCEL);
1042	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_ERROR);
1043	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_AREA_REGISTER);
1044	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_AREA_UNREGISTER);
1045	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_AREA_ATTACH);
1046	RT_CASE_RET_STR(VBOX_SHCL_HOST_FN_AREA_DETACH);
1047	}
1048	return "Unknown";
1049	}
1050
1051	/**
1052	* Translates a Shared Clipboard host message enum to a string.
1053	*
1054	* @returns Message ID string name.
1055	* @param uMsg The message to translate.
1056	*/
1057	const char *ShClHostMsgToStr(uint32_t uMsg)
1058	{
1059	switch (uMsg)
1060	{
1061	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_QUIT);
1062	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_READ_DATA);
1063	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_FORMATS_REPORT);
1064	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_CANCELED);
1065	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_READ_DATA_CID);
1066	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_STATUS);
1067	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_ROOT_LIST_HDR_READ);
1068	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_ROOT_LIST_HDR_WRITE);
1069	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_ROOT_LIST_ENTRY_READ);
1070	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_ROOT_LIST_ENTRY_WRITE);
1071	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_LIST_OPEN);
1072	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_LIST_CLOSE);
1073	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_LIST_HDR_READ);
1074	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_LIST_HDR_WRITE);
1075	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_LIST_ENTRY_READ);
1076	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_LIST_ENTRY_WRITE);
1077	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_OBJ_OPEN);
1078	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_OBJ_CLOSE);
1079	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_OBJ_READ);
1080	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_OBJ_WRITE);
1081	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_CANCEL);
1082	RT_CASE_RET_STR(VBOX_SHCL_HOST_MSG_TRANSFER_ERROR);
1083	}
1084	return "Unknown";
1085	}
1086
1087	/**
1088	* Translates a Shared Clipboard guest message enum to a string.
1089	*
1090	* @returns Message ID string name.
1091	* @param uMsg The message to translate.
1092	*/
1093	const char *ShClGuestMsgToStr(uint32_t uMsg)
1094	{
1095	switch (uMsg)
1096	{
1097	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_MSG_OLD_GET_WAIT);
1098	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_REPORT_FORMATS);
1099	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_DATA_READ);
1100	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_DATA_WRITE);
1101	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_CONNECT);
1102	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_REPORT_FEATURES);
1103	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_QUERY_FEATURES);
1104	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_MSG_PEEK_NOWAIT);
1105	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_MSG_PEEK_WAIT);
1106	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_MSG_GET);
1107	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_MSG_CANCEL);
1108	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_REPLY);
1109	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_ROOT_LIST_HDR_READ);
1110	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_ROOT_LIST_HDR_WRITE);
1111	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_ROOT_LIST_ENTRY_READ);
1112	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_ROOT_LIST_ENTRY_WRITE);
1113	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_LIST_OPEN);
1114	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_LIST_CLOSE);
1115	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_LIST_HDR_READ);
1116	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_LIST_HDR_WRITE);
1117	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_LIST_ENTRY_READ);
1118	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_LIST_ENTRY_WRITE);
1119	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_OBJ_OPEN);
1120	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_OBJ_CLOSE);
1121	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_OBJ_READ);
1122	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_OBJ_WRITE);
1123	RT_CASE_RET_STR(VBOX_SHCL_GUEST_FN_ERROR);
1124	}
1125	return "Unknown";
1126	}

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source: vbox/trunk/src/VBox/GuestHost/SharedClipboard/clipboard-common.cpp@ 86649

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