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VBoxCAPI.cpp

Last change on this file was 103355, checked in by vboxsync, 2 months ago
Main/VBoxCAPI.cpp: Try initialize pManager to NULL to see if that shuts up parfait warnings about using it uninitialized. bugref:3409
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File size: 24.9 KB

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1	/* $Id: VBoxCAPI.cpp 103355 2024-02-14 14:13:23Z vboxsync $ */
2	/** @file VBoxCAPI.cpp
3	* Utility functions to use with the C API binding.
4	*/
5
6	/*
7	* Copyright (C) 2009-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	#define LOG_GROUP LOG_GROUP_MAIN
29
30	#include "VBoxCAPI.h"
31
32	#ifdef VBOX_WITH_XPCOM
33	# include <nsMemory.h>
34	# include <nsIServiceManager.h>
35	# include <nsEventQueueUtils.h>
36	# include <nsIExceptionService.h>
37	# include <stdlib.h>
38	#endif /* VBOX_WITH_XPCOM */
39
40	#include <iprt/env.h>
41	#include <iprt/err.h>
42	#include <iprt/initterm.h>
43	#include <iprt/mem.h>
44	#include <iprt/string.h>
45	#include <iprt/utf16.h>
46	#include <iprt/uuid.h>
47	#include <VBox/log.h>
48	#include <VBox/version.h>
49
50	#include "VBox/com/com.h"
51	#include "VBox/com/NativeEventQueue.h"
52
53
54	#ifndef RT_OS_DARWIN /* Probably not used for xpcom, so clang gets upset: error: using directive refers to implicitly-defined namespace 'std' [-Werror]*/
55	using namespace std;
56	#endif
57
58	/* The following 2 object references should be eliminated once the legacy
59	* way to initialize the COM/XPCOM C bindings is removed. */
60	static ISession *g_Session = NULL;
61	static IVirtualBox *g_VirtualBox = NULL;
62
63	#ifdef VBOX_WITH_XPCOM
64	/* This object reference should be eliminated once the legacy way of handling
65	* the event queue (XPCOM specific) is removed. */
66	static nsIEventQueue *g_EventQueue = NULL;
67	#endif /* VBOX_WITH_XPCOM */
68
69	static void VBoxComUninitialize(void);
70	static void VBoxClientUninitialize(void);
71
72	static int
73	VBoxUtf16ToUtf8(CBSTR pwszString, char **ppszString)
74	{
75	if (!pwszString)
76	{
77	*ppszString = NULL;
78	return VINF_SUCCESS;
79	}
80	return RTUtf16ToUtf8(pwszString, ppszString);
81	}
82
83	static int
84	VBoxUtf8ToUtf16(const char pszString, BSTR ppwszString)
85	{
86	*ppwszString = NULL;
87	if (!pszString)
88	return VINF_SUCCESS;
89	#ifdef VBOX_WITH_XPCOM
90	return RTStrToUtf16(pszString, ppwszString);
91	#else /* !VBOX_WITH_XPCOM */
92	PRTUTF16 pwsz;
93	int vrc = RTStrToUtf16(pszString, &pwsz);
94	if (RT_SUCCESS(vrc))
95	{
96	*ppwszString = ::SysAllocString(pwsz);
97	if (!*ppwszString)
98	vrc = VERR_NO_STR_MEMORY;
99	RTUtf16Free(pwsz);
100	}
101	return vrc;
102	#endif /* !VBOX_WITH_XPCOM */
103	}
104
105	static void
106	VBoxUtf8Clear(char *pszString)
107	{
108	RT_BZERO(pszString, strlen(pszString));
109	}
110
111	static void
112	VBoxUtf16Clear(BSTR pwszString)
113	{
114	RT_BZERO(pwszString, RTUtf16Len(pwszString) * sizeof(RTUTF16));
115	}
116
117	static void
118	VBoxUtf16Free(BSTR pwszString)
119	{
120	#ifdef VBOX_WITH_XPCOM
121	RTUtf16Free(pwszString);
122	#else
123	::SysFreeString(pwszString);
124	#endif
125	}
126
127	static void
128	VBoxUtf8Free(char *pszString)
129	{
130	RTStrFree(pszString);
131	}
132
133	static void
134	VBoxComUnallocString(BSTR pwsz)
135	{
136	if (pwsz)
137	{
138	#ifdef VBOX_WITH_XPCOM
139	nsMemory::Free(pwsz);
140	#else
141	::SysFreeString(pwsz);
142	#endif
143	}
144	}
145
146	static void
147	VBoxComUnallocMem(void *pv)
148	{
149	VBoxComUnallocString((BSTR)pv);
150	}
151
152	static ULONG
153	VBoxVTElemSize(VARTYPE vt)
154	{
155	switch (vt)
156	{
157	case VT_BOOL:
158	case VT_I1:
159	case VT_UI1:
160	return 1;
161	case VT_I2:
162	case VT_UI2:
163	return 2;
164	case VT_I4:
165	case VT_UI4:
166	case VT_HRESULT:
167	return 4;
168	case VT_I8:
169	case VT_UI8:
170	return 8;
171	case VT_BSTR:
172	case VT_DISPATCH:
173	case VT_UNKNOWN:
174	return sizeof(void *);
175	default:
176	return 0;
177	}
178	}
179
180	static SAFEARRAY *
181	VBoxSafeArrayCreateVector(VARTYPE vt, LONG lLbound, ULONG cElements)
182	{
183	#ifdef VBOX_WITH_XPCOM
184	NOREF(lLbound);
185	ULONG cbElement = VBoxVTElemSize(vt);
186	if (!cbElement)
187	return NULL;
188	SAFEARRAY psa = (SAFEARRAY )RTMemAllocZ(sizeof(SAFEARRAY));
189	if (!psa)
190	return psa;
191	if (cElements)
192	{
193	void pv = nsMemory::Alloc(cElements cbElement);
194	if (!pv)
195	{
196	RTMemFree(psa);
197	return NULL;
198	}
199	psa->pv = pv;
200	psa->c = cElements;
201	}
202	return psa;
203	#else /* !VBOX_WITH_XPCOM */
204	return SafeArrayCreateVector(vt, lLbound, cElements);
205	#endif /* !VBOX_WITH_XPCOM */
206	}
207
208	static SAFEARRAY *
209	VBoxSafeArrayOutParamAlloc(void)
210	{
211	#ifdef VBOX_WITH_XPCOM
212	return (SAFEARRAY *)RTMemAllocZ(sizeof(SAFEARRAY));
213	#else /* !VBOX_WITH_XPCOM */
214	return NULL;
215	#endif /* !VBOX_WITH_XPCOM */
216	}
217
218	static HRESULT
219	VBoxSafeArrayDestroy(SAFEARRAY *psa)
220	{
221	#ifdef VBOX_WITH_XPCOM
222	if (psa)
223	{
224	if (psa->pv)
225	nsMemory::Free(psa->pv);
226	RTMemFree(psa);
227	}
228	return S_OK;
229	#else /* !VBOX_WITH_XPCOM */
230	VARTYPE vt = VT_UNKNOWN;
231	HRESULT hrc = SafeArrayGetVartype(psa, &vt);
232	if (FAILED(hrc))
233	return hrc;
234	if (vt == VT_BSTR)
235	{
236	/* Special treatment: strings are to be freed explicitly, see sample
237	* C binding code, so zap it here. No way to reach compatible code
238	* behavior between COM and XPCOM without this kind of trickery. */
239	void *pData;
240	hrc = SafeArrayAccessData(psa, &pData);
241	if (FAILED(hrc))
242	return hrc;
243	ULONG cbElement = VBoxVTElemSize(vt);
244	if (!cbElement)
245	return E_INVALIDARG;
246	Assert(cbElement = psa->cbElements);
247	ULONG cElements = psa->rgsabound[0].cElements;
248	memset(pData, '\0', cbElement * cElements);
249	SafeArrayUnaccessData(psa);
250	}
251	return SafeArrayDestroy(psa);
252	#endif /* !VBOX_WITH_XPCOM */
253	}
254
255	static HRESULT
256	VBoxSafeArrayCopyInParamHelper(SAFEARRAY psa, const void pv, ULONG cb)
257	{
258	if (!pv \|\| !psa)
259	return E_POINTER;
260	if (!cb)
261	return S_OK;
262
263	void *pData;
264	#ifdef VBOX_WITH_XPCOM
265	pData = psa->pv;
266	#else /* !VBOX_WITH_XPCOM */
267	HRESULT hrc = SafeArrayAccessData(psa, &pData);
268	if (FAILED(hrc))
269	return hrc;
270	#endif /* !VBOX_WITH_XPCOM */
271	memcpy(pData, pv, cb);
272	#ifndef VBOX_WITH_XPCOM
273	SafeArrayUnaccessData(psa);
274	#endif
275	return S_OK;
276	}
277
278	static HRESULT
279	VBoxSafeArrayCopyOutParamHelper(void *ppv, ULONG pcb, VARTYPE vt, SAFEARRAY *psa)
280	{
281	if (!ppv)
282	return E_POINTER;
283	ULONG cbElement = VBoxVTElemSize(vt);
284	if (!cbElement)
285	{
286	*ppv = NULL;
287	if (pcb)
288	*pcb = 0;
289	return E_INVALIDARG;
290	}
291	#ifndef VBOX_WITH_XPCOM
292	if (psa->cDims != 1)
293	{
294	*ppv = NULL;
295	if (pcb)
296	*pcb = 0;
297	return E_INVALIDARG;
298	}
299	Assert(cbElement = psa->cbElements);
300	#endif /* !VBOX_WITH_XPCOM */
301	void *pData;
302	ULONG cElements;
303	#ifdef VBOX_WITH_XPCOM
304	pData = psa->pv;
305	cElements = psa->c;
306	#else /* !VBOX_WITH_XPCOM */
307	HRESULT hrc = SafeArrayAccessData(psa, &pData);
308	if (FAILED(hrc))
309	{
310	*ppv = NULL;
311	if (pcb)
312	*pcb = 0;
313	return hrc;
314	}
315	cElements = psa->rgsabound[0].cElements;
316	#endif /* !VBOX_WITH_XPCOM */
317	size_t cbTotal = cbElement * cElements;
318	void *pv = NULL;
319	if (cbTotal)
320	{
321	pv = malloc(cbTotal);
322	if (!pv)
323	{
324	*ppv = NULL;
325	if (pcb)
326	*pcb = 0;
327	return E_OUTOFMEMORY;
328	}
329	else
330	memcpy(pv, pData, cbTotal);
331	}
332	*ppv = pv;
333	if (pcb)
334	*pcb = (ULONG)cbTotal;
335	#ifndef VBOX_WITH_XPCOM
336	SafeArrayUnaccessData(psa);
337	#endif
338	return S_OK;
339	}
340
341	static HRESULT
342	VBoxSafeArrayCopyOutIfaceParamHelper(IUnknown **ppaObj, ULONG pcObj, SAFEARRAY *psa)
343	{
344	ULONG mypcb;
345	HRESULT hrc = VBoxSafeArrayCopyOutParamHelper((void **)ppaObj, &mypcb, VT_UNKNOWN, psa);
346	if (FAILED(hrc))
347	{
348	if (pcObj)
349	*pcObj = 0;
350	return hrc;
351	}
352	ULONG cElements = mypcb / sizeof(void *);
353	if (pcObj)
354	*pcObj = cElements;
355	#ifndef VBOX_WITH_XPCOM
356	/* Do this only for COM, as there the SAFEARRAY destruction will release
357	* the contained references automatically. XPCOM doesn't do that, which
358	* means that copying implicitly transfers ownership. */
359	IUnknown *paObj = ppaObj;
360	for (ULONG i = 0; i < cElements; i++)
361	{
362	IUnknown *pObj = paObj[i];
363	if (pObj)
364	pObj->AddRef();
365	}
366	#endif /* VBOX_WITH_XPCOM */
367	return S_OK;
368	}
369
370	static HRESULT
371	VBoxArrayOutFree(void *pv)
372	{
373	free(pv);
374	return S_OK;
375	}
376
377	static void
378	VBoxComInitialize(const char pszVirtualBoxIID, IVirtualBox *ppVirtualBox,
379	const char pszSessionIID, ISession *ppSession)
380	{
381	int vrc;
382	IID virtualBoxIID;
383	IID sessionIID;
384
385	*ppSession = NULL;
386	*ppVirtualBox = NULL;
387
388	/* convert the string representation of the UUIDs (if provided) to IID */
389	if (pszVirtualBoxIID && *pszVirtualBoxIID)
390	{
391	vrc = ::RTUuidFromStr((RTUUID *)&virtualBoxIID, pszVirtualBoxIID);
392	if (RT_FAILURE(vrc))
393	return;
394	}
395	else
396	virtualBoxIID = IID_IVirtualBox;
397	if (pszSessionIID && *pszSessionIID)
398	{
399	vrc = ::RTUuidFromStr((RTUUID *)&sessionIID, pszSessionIID);
400	if (RT_FAILURE(vrc))
401	return;
402	}
403	else
404	sessionIID = IID_ISession;
405
406	HRESULT hrc = com::Initialize(VBOX_COM_INIT_F_DEFAULT \| VBOX_COM_INIT_F_NO_COM_PATCHING);
407	if (FAILED(hrc))
408	{
409	Log(("Cbinding: COM/XPCOM could not be initialized! hrc=%Rhrc\n", hrc));
410	VBoxComUninitialize();
411	return;
412	}
413
414	#ifdef VBOX_WITH_XPCOM
415	hrc = NS_GetMainEventQ(&g_EventQueue);
416	if (FAILED(hrc))
417	{
418	Log(("Cbinding: Could not get XPCOM event queue! hrc=%Rhrc\n", hrc));
419	VBoxComUninitialize();
420	return;
421	}
422	#endif /* VBOX_WITH_XPCOM */
423
424	#ifdef VBOX_WITH_XPCOM
425	nsIComponentManager *pManager = NULL;
426	hrc = NS_GetComponentManager(&pManager);
427	if (FAILED(hrc))
428	{
429	Log(("Cbinding: Could not get component manager! hrc=%Rhrc\n", hrc));
430	VBoxComUninitialize();
431	return;
432	}
433
434	hrc = pManager->CreateInstanceByContractID(NS_VIRTUALBOX_CONTRACTID,
435	nsnull,
436	virtualBoxIID,
437	(void **)&g_VirtualBox);
438	#else /* !VBOX_WITH_XPCOM */
439	IVirtualBoxClient *pVirtualBoxClient;
440	hrc = CoCreateInstance(CLSID_VirtualBoxClient, NULL, CLSCTX_INPROC_SERVER, IID_IVirtualBoxClient, (void **)&pVirtualBoxClient);
441	if (SUCCEEDED(hrc))
442	{
443	IVirtualBox *pVirtualBox;
444	hrc = pVirtualBoxClient->get_VirtualBox(&pVirtualBox);
445	if (SUCCEEDED(hrc))
446	{
447	hrc = pVirtualBox->QueryInterface(virtualBoxIID, (void **)&g_VirtualBox);
448	pVirtualBox->Release();
449	}
450	pVirtualBoxClient->Release();
451	}
452	#endif /* !VBOX_WITH_XPCOM */
453	if (FAILED(hrc))
454	{
455	Log(("Cbinding: Could not instantiate VirtualBox object! hrc=%Rhrc\n",hrc));
456	#ifdef VBOX_WITH_XPCOM
457	pManager->Release();
458	pManager = NULL;
459	#endif /* VBOX_WITH_XPCOM */
460	VBoxComUninitialize();
461	return;
462	}
463
464	Log(("Cbinding: IVirtualBox object created.\n"));
465
466	#ifdef VBOX_WITH_XPCOM
467	hrc = pManager->CreateInstanceByContractID(NS_SESSION_CONTRACTID, nsnull, sessionIID, (void **)&g_Session);
468	#else /* !VBOX_WITH_XPCOM */
469	hrc = CoCreateInstance(CLSID_Session, NULL, CLSCTX_INPROC_SERVER, sessionIID, (void **)&g_Session);
470	#endif /* !VBOX_WITH_XPCOM */
471	if (FAILED(hrc))
472	{
473	Log(("Cbinding: Could not instantiate Session object! hrc=%Rhrc\n",hrc));
474	#ifdef VBOX_WITH_XPCOM
475	pManager->Release();
476	pManager = NULL;
477	#endif /* VBOX_WITH_XPCOM */
478	VBoxComUninitialize();
479	return;
480	}
481
482	Log(("Cbinding: ISession object created.\n"));
483
484	#ifdef VBOX_WITH_XPCOM
485	pManager->Release();
486	pManager = NULL;
487	#endif /* VBOX_WITH_XPCOM */
488
489	*ppSession = g_Session;
490	*ppVirtualBox = g_VirtualBox;
491	}
492
493	static void
494	VBoxComInitializeV1(IVirtualBox ppVirtualBox, ISession ppSession)
495	{
496	VBoxComInitialize(NULL, ppVirtualBox, NULL, ppSession);
497	}
498
499	static void
500	VBoxComUninitialize(void)
501	{
502	if (g_Session)
503	{
504	g_Session->Release();
505	g_Session = NULL;
506	}
507	if (g_VirtualBox)
508	{
509	g_VirtualBox->Release();
510	g_VirtualBox = NULL;
511	}
512	#ifdef VBOX_WITH_XPCOM
513	if (g_EventQueue)
514	{
515	g_EventQueue->Release();
516	g_EventQueue = NULL;
517	}
518	#endif /* VBOX_WITH_XPCOM */
519	com::Shutdown();
520	Log(("Cbinding: Cleaned up the created objects.\n"));
521	}
522
523	#ifdef VBOX_WITH_XPCOM
524	static void
525	VBoxGetEventQueue(nsIEventQueue **ppEventQueue)
526	{
527	*ppEventQueue = g_EventQueue;
528	}
529	#endif /* VBOX_WITH_XPCOM */
530
531	static int
532	VBoxProcessEventQueue(LONG64 iTimeoutMS)
533	{
534	RTMSINTERVAL iTimeout;
535	if (iTimeoutMS < 0 \|\| iTimeoutMS > UINT32_MAX)
536	iTimeout = RT_INDEFINITE_WAIT;
537	else
538	iTimeout = (RTMSINTERVAL)iTimeoutMS;
539	int vrc = com::NativeEventQueue::getMainEventQueue()->processEventQueue(iTimeout);
540	switch (vrc)
541	{
542	case VINF_SUCCESS:
543	return 0;
544	case VINF_INTERRUPTED:
545	return 1;
546	case VERR_INTERRUPTED:
547	return 2;
548	case VERR_TIMEOUT:
549	return 3;
550	case VERR_INVALID_CONTEXT:
551	return 4;
552	default:
553	return 5;
554	}
555	}
556
557	static int
558	VBoxInterruptEventQueueProcessing(void)
559	{
560	com::NativeEventQueue::getMainEventQueue()->interruptEventQueueProcessing();
561	return 0;
562	}
563
564	static HRESULT
565	VBoxGetException(IErrorInfo **ppException)
566	{
567	HRESULT hrc;
568
569	*ppException = NULL;
570
571	#ifdef VBOX_WITH_XPCOM
572	nsIServiceManager *mgr = NULL;
573	hrc = NS_GetServiceManager(&mgr);
574	if (FAILED(hrc) \|\| !mgr)
575	return hrc;
576
577	IID esid = NS_IEXCEPTIONSERVICE_IID;
578	nsIExceptionService *es = NULL;
579	hrc = mgr->GetServiceByContractID(NS_EXCEPTIONSERVICE_CONTRACTID, esid, (void **)&es);
580	if (FAILED(hrc) \|\| !es)
581	{
582	mgr->Release();
583	return hrc;
584	}
585
586	nsIExceptionManager *em;
587	hrc = es->GetCurrentExceptionManager(&em);
588	if (FAILED(hrc) \|\| !em)
589	{
590	es->Release();
591	mgr->Release();
592	return hrc;
593	}
594
595	nsIException *ex;
596	hrc = em->GetCurrentException(&ex);
597	if (FAILED(hrc))
598	{
599	em->Release();
600	es->Release();
601	mgr->Release();
602	return hrc;
603	}
604
605	*ppException = ex;
606	em->Release();
607	es->Release();
608	mgr->Release();
609	#else /* !VBOX_WITH_XPCOM */
610	IErrorInfo *ex;
611	hrc = ::GetErrorInfo(0, &ex);
612	if (FAILED(hrc))
613	return hrc;
614
615	*ppException = ex;
616	#endif /* !VBOX_WITH_XPCOM */
617
618	return hrc;
619	}
620
621	static HRESULT
622	VBoxClearException(void)
623	{
624	HRESULT hrc;
625
626	#ifdef VBOX_WITH_XPCOM
627	nsIServiceManager *mgr = NULL;
628	hrc = NS_GetServiceManager(&mgr);
629	if (FAILED(hrc) \|\| !mgr)
630	return hrc;
631
632	IID esid = NS_IEXCEPTIONSERVICE_IID;
633	nsIExceptionService *es = NULL;
634	hrc = mgr->GetServiceByContractID(NS_EXCEPTIONSERVICE_CONTRACTID, esid, (void **)&es);
635	if (FAILED(hrc) \|\| !es)
636	{
637	mgr->Release();
638	return hrc;
639	}
640
641	nsIExceptionManager *em;
642	hrc = es->GetCurrentExceptionManager(&em);
643	if (FAILED(hrc) \|\| !em)
644	{
645	es->Release();
646	mgr->Release();
647	return hrc;
648	}
649
650	hrc = em->SetCurrentException(NULL);
651	em->Release();
652	es->Release();
653	mgr->Release();
654	#else /* !VBOX_WITH_XPCOM */
655	hrc = ::SetErrorInfo(0, NULL);
656	#endif /* !VBOX_WITH_XPCOM */
657
658	return hrc;
659	}
660
661	static HRESULT
662	VBoxClientInitialize(const char pszVirtualBoxClientIID, IVirtualBoxClient *ppVirtualBoxClient)
663	{
664	IID virtualBoxClientIID;
665
666	*ppVirtualBoxClient = NULL;
667
668	/* convert the string representation of UUID to IID type */
669	if (pszVirtualBoxClientIID && *pszVirtualBoxClientIID)
670	{
671	int vrc = ::RTUuidFromStr((RTUUID *)&virtualBoxClientIID, pszVirtualBoxClientIID);
672	if (RT_FAILURE(vrc))
673	return E_INVALIDARG;
674	}
675	else
676	virtualBoxClientIID = IID_IVirtualBoxClient;
677
678	HRESULT hrc = com::Initialize(VBOX_COM_INIT_F_DEFAULT \| VBOX_COM_INIT_F_NO_COM_PATCHING);
679	if (FAILED(hrc))
680	{
681	Log(("Cbinding: COM/XPCOM could not be initialized! hrc=%Rhrc\n", hrc));
682	VBoxClientUninitialize();
683	return hrc;
684	}
685
686	#ifdef VBOX_WITH_XPCOM
687	hrc = NS_GetMainEventQ(&g_EventQueue);
688	if (NS_FAILED(hrc))
689	{
690	Log(("Cbinding: Could not get XPCOM event queue! hrc=%Rhrc\n", hrc));
691	VBoxClientUninitialize();
692	return hrc;
693	}
694	#endif /* VBOX_WITH_XPCOM */
695
696	#ifdef VBOX_WITH_XPCOM
697	nsIComponentManager *pManager = NULL;
698	hrc = NS_GetComponentManager(&pManager);
699	if (FAILED(hrc))
700	{
701	Log(("Cbinding: Could not get component manager! hrc=%Rhrc\n", hrc));
702	VBoxClientUninitialize();
703	return hrc;
704	}
705
706	hrc = pManager->CreateInstanceByContractID(NS_VIRTUALBOXCLIENT_CONTRACTID,
707	nsnull,
708	virtualBoxClientIID,
709	(void **)ppVirtualBoxClient);
710	#else /* !VBOX_WITH_XPCOM */
711	hrc = CoCreateInstance(CLSID_VirtualBoxClient, NULL, CLSCTX_INPROC_SERVER, virtualBoxClientIID, (void **)ppVirtualBoxClient);
712	#endif /* !VBOX_WITH_XPCOM */
713	if (FAILED(hrc))
714	{
715	Log(("Cbinding: Could not instantiate VirtualBoxClient object! hrc=%Rhrc\n",hrc));
716	#ifdef VBOX_WITH_XPCOM
717	pManager->Release();
718	pManager = NULL;
719	#endif /* VBOX_WITH_XPCOM */
720	VBoxClientUninitialize();
721	return hrc;
722	}
723
724	#ifdef VBOX_WITH_XPCOM
725	pManager->Release();
726	pManager = NULL;
727	#endif /* VBOX_WITH_XPCOM */
728
729	Log(("Cbinding: IVirtualBoxClient object created.\n"));
730
731	return S_OK;
732	}
733
734	static HRESULT
735	VBoxClientThreadInitialize(void)
736	{
737	return com::Initialize(VBOX_COM_INIT_F_DEFAULT \| VBOX_COM_INIT_F_NO_COM_PATCHING);
738	}
739
740	static HRESULT
741	VBoxClientThreadUninitialize(void)
742	{
743	return com::Shutdown();
744	}
745
746	static void
747	VBoxClientUninitialize(void)
748	{
749	#ifdef VBOX_WITH_XPCOM
750	if (g_EventQueue)
751	{
752	NS_RELEASE(g_EventQueue);
753	g_EventQueue = NULL;
754	}
755	#endif /* VBOX_WITH_XPCOM */
756	com::Shutdown();
757	Log(("Cbinding: Cleaned up the created objects.\n"));
758	}
759
760	static unsigned int
761	VBoxVersion(void)
762	{
763	return VBOX_VERSION_MAJOR * 1000 * 1000 + VBOX_VERSION_MINOR * 1000 + VBOX_VERSION_BUILD;
764	}
765
766	static unsigned int
767	VBoxAPIVersion(void)
768	{
769	return VBOX_VERSION_MAJOR * 1000 + VBOX_VERSION_MINOR + (VBOX_VERSION_BUILD > 50 ? 1 : 0);
770	}
771
772	VBOXCAPI_DECL(PCVBOXCAPI)
773	VBoxGetCAPIFunctions(unsigned uVersion)
774	{
775	/* This is the first piece of code which knows that IPRT exists, so
776	* initialize it properly. The limited initialization in VBoxC is not
777	* sufficient, and causes trouble with com::Initialize() misbehaving. */
778	RTR3InitDll(RTR3INIT_FLAGS_UNOBTRUSIVE);
779
780	/*
781	* The current interface version.
782	*/
783	static const VBOXCAPI s_Functions =
784	{
785	sizeof(VBOXCAPI),
786	VBOX_CAPI_VERSION,
787
788	VBoxVersion,
789	VBoxAPIVersion,
790
791	VBoxClientInitialize,
792	VBoxClientThreadInitialize,
793	VBoxClientThreadUninitialize,
794	VBoxClientUninitialize,
795
796	VBoxComInitialize,
797	VBoxComUninitialize,
798
799	VBoxComUnallocString,
800
801	VBoxUtf16ToUtf8,
802	VBoxUtf8ToUtf16,
803	VBoxUtf8Free,
804	VBoxUtf16Free,
805
806	VBoxSafeArrayCreateVector,
807	VBoxSafeArrayOutParamAlloc,
808	VBoxSafeArrayCopyInParamHelper,
809	VBoxSafeArrayCopyOutParamHelper,
810	VBoxSafeArrayCopyOutIfaceParamHelper,
811	VBoxSafeArrayDestroy,
812	VBoxArrayOutFree,
813
814	#ifdef VBOX_WITH_XPCOM
815	VBoxGetEventQueue,
816	#endif /* VBOX_WITH_XPCOM */
817	VBoxGetException,
818	VBoxClearException,
819	VBoxProcessEventQueue,
820	VBoxInterruptEventQueueProcessing,
821
822	VBoxUtf8Clear,
823	VBoxUtf16Clear,
824
825	VBOX_CAPI_VERSION
826	};
827
828	if ((uVersion & 0xffff0000U) == (VBOX_CAPI_VERSION & 0xffff0000U))
829	return &s_Functions;
830
831	/*
832	* Legacy interface version 3.0.
833	*/
834	static const struct VBOXCAPIV3
835	{
836	/** The size of the structure. */
837	unsigned cb;
838	/** The structure version. */
839	unsigned uVersion;
840
841	unsigned int (*pfnGetVersion)(void);
842
843	unsigned int (*pfnGetAPIVersion)(void);
844
845	HRESULT (pfnClientInitialize)(const char pszVirtualBoxClientIID,
846	IVirtualBoxClient **ppVirtualBoxClient);
847	void (*pfnClientUninitialize)(void);
848
849	void (pfnComInitialize)(const char pszVirtualBoxIID,
850	IVirtualBox **ppVirtualBox,
851	const char *pszSessionIID,
852	ISession **ppSession);
853
854	void (*pfnComUninitialize)(void);
855
856	void (pfnComUnallocMem)(void pv);
857
858	int (pfnUtf16ToUtf8)(CBSTR pwszString, char *ppszString);
859	int (pfnUtf8ToUtf16)(const char pszString, BSTR *ppwszString);
860	void (pfnUtf8Free)(char pszString);
861	void (*pfnUtf16Free)(BSTR pwszString);
862
863	#ifdef VBOX_WITH_XPCOM
864	void (pfnGetEventQueue)(nsIEventQueue *ppEventQueue);
865	#endif /* VBOX_WITH_XPCOM */
866	HRESULT (pfnGetException)(IErrorInfo *ppException);
867	HRESULT (*pfnClearException)(void);
868
869	/** Tail version, same as uVersion. */
870	unsigned uEndVersion;
871	} s_Functions_v3_0 =
872	{
873	sizeof(s_Functions_v3_0),
874	0x00030000U,
875
876	VBoxVersion,
877	VBoxAPIVersion,
878
879	VBoxClientInitialize,
880	VBoxClientUninitialize,
881
882	VBoxComInitialize,
883	VBoxComUninitialize,
884
885	VBoxComUnallocMem,
886
887	VBoxUtf16ToUtf8,
888	VBoxUtf8ToUtf16,
889	VBoxUtf8Free,
890	VBoxUtf16Free,
891
892	#ifdef VBOX_WITH_XPCOM
893	VBoxGetEventQueue,
894	#endif /* VBOX_WITH_XPCOM */
895	VBoxGetException,
896	VBoxClearException,
897
898	0x00030000U
899	};
900
901	if ((uVersion & 0xffff0000U) == 0x00030000U)
902	return (PCVBOXCAPI)&s_Functions_v3_0;
903
904	/*
905	* Legacy interface version 2.0.
906	*/
907	static const struct VBOXCAPIV2
908	{
909	/** The size of the structure. */
910	unsigned cb;
911	/** The structure version. */
912	unsigned uVersion;
913
914	unsigned int (*pfnGetVersion)(void);
915
916	void (pfnComInitialize)(const char pszVirtualBoxIID,
917	IVirtualBox **ppVirtualBox,
918	const char *pszSessionIID,
919	ISession **ppSession);
920
921	void (*pfnComUninitialize)(void);
922
923	void (pfnComUnallocMem)(void pv);
924	void (*pfnUtf16Free)(BSTR pwszString);
925	void (pfnUtf8Free)(char pszString);
926
927	int (pfnUtf16ToUtf8)(CBSTR pwszString, char *ppszString);
928	int (pfnUtf8ToUtf16)(const char pszString, BSTR *ppwszString);
929
930	#ifdef VBOX_WITH_XPCOM
931	void (pfnGetEventQueue)(nsIEventQueue *ppEventQueue);
932	#endif /* VBOX_WITH_XPCOM */
933
934	/** Tail version, same as uVersion. */
935	unsigned uEndVersion;
936	} s_Functions_v2_0 =
937	{
938	sizeof(s_Functions_v2_0),
939	0x00020000U,
940
941	VBoxVersion,
942
943	VBoxComInitialize,
944	VBoxComUninitialize,
945
946	VBoxComUnallocMem,
947	VBoxUtf16Free,
948	VBoxUtf8Free,
949
950	VBoxUtf16ToUtf8,
951	VBoxUtf8ToUtf16,
952
953	#ifdef VBOX_WITH_XPCOM
954	VBoxGetEventQueue,
955	#endif /* VBOX_WITH_XPCOM */
956
957	0x00020000U
958	};
959
960	if ((uVersion & 0xffff0000U) == 0x00020000U)
961	return (PCVBOXCAPI)&s_Functions_v2_0;
962
963	/*
964	* Legacy interface version 1.0.
965	*/
966	static const struct VBOXCAPIV1
967	{
968	/** The size of the structure. */
969	unsigned cb;
970	/** The structure version. */
971	unsigned uVersion;
972
973	unsigned int (*pfnGetVersion)(void);
974
975	void (pfnComInitialize)(IVirtualBox virtualBox, ISession *session);
976	void (*pfnComUninitialize)(void);
977
978	void (pfnComUnallocMem)(void pv);
979	void (*pfnUtf16Free)(BSTR pwszString);
980	void (pfnUtf8Free)(char pszString);
981
982	int (pfnUtf16ToUtf8)(CBSTR pwszString, char *ppszString);
983	int (pfnUtf8ToUtf16)(const char pszString, BSTR *ppwszString);
984
985	/** Tail version, same as uVersion. */
986	unsigned uEndVersion;
987	} s_Functions_v1_0 =
988	{
989	sizeof(s_Functions_v1_0),
990	0x00010000U,
991
992	VBoxVersion,
993
994	VBoxComInitializeV1,
995	VBoxComUninitialize,
996
997	VBoxComUnallocMem,
998	VBoxUtf16Free,
999	VBoxUtf8Free,
1000
1001	VBoxUtf16ToUtf8,
1002	VBoxUtf8ToUtf16,
1003
1004	0x00010000U
1005	};
1006
1007	if ((uVersion & 0xffff0000U) == 0x00010000U)
1008	return (PCVBOXCAPI)&s_Functions_v1_0;
1009
1010	/*
1011	* Unsupported interface version.
1012	*/
1013	return NULL;
1014	}
1015
1016	#ifdef VBOX_WITH_XPCOM
1017	VBOXCAPI_DECL(PCVBOXCAPI)
1018	VBoxGetXPCOMCFunctions(unsigned uVersion)
1019	{
1020	return VBoxGetCAPIFunctions(uVersion);
1021	}
1022	#endif /* VBOX_WITH_XPCOM */
1023	/* vim: set ts=4 sw=4 et: */

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source: vbox/trunk/src/VBox/Main/cbinding/VBoxCAPI.cpp

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