GuestCtrlPrivate.cpp@ 69222

Last change on this file since 69222 was 67914, checked in by vboxsync, 7 years ago
src-client: Define LOG_GROUP according to interface or similar.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 33.9 KB

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1	/* $Id: GuestCtrlPrivate.cpp 67914 2017-07-11 20:46:37Z vboxsync $ */
2	/** @file
3	* Internal helpers/structures for guest control functionality.
4	*/
5
6	/*
7	* Copyright (C) 2011-2017 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_GUEST_CONTROL
23	#include "LoggingNew.h"
24
25	#ifndef VBOX_WITH_GUEST_CONTROL
26	# error "VBOX_WITH_GUEST_CONTROL must defined in this file"
27	#endif
28	#include "GuestCtrlImplPrivate.h"
29	#include "GuestSessionImpl.h"
30	#include "VMMDev.h"
31
32	#include <iprt/asm.h>
33	#include <iprt/cpp/utils.h> /* For unconst(). */
34	#include <iprt/ctype.h>
35	#ifdef DEBUG
36	# include <iprt/file.h>
37	#endif /* DEBUG */
38
39
40
41	int GuestFsObjData::FromLs(const GuestProcessStreamBlock &strmBlk)
42	{
43	LogFlowFunc(("\n"));
44
45	int rc = VINF_SUCCESS;
46
47	try
48	{
49	#ifdef DEBUG
50	strmBlk.DumpToLog();
51	#endif
52	/* Object name. */
53	mName = strmBlk.GetString("name");
54	if (mName.isEmpty()) throw VERR_NOT_FOUND;
55	/* Type. */
56	Utf8Str strType(strmBlk.GetString("ftype"));
57	if (strType.equalsIgnoreCase("-"))
58	mType = FsObjType_File;
59	else if (strType.equalsIgnoreCase("d"))
60	mType = FsObjType_Directory;
61	/** @todo Add more types! */
62	else
63	mType = FsObjType_Unknown;
64	/* Object size. */
65	rc = strmBlk.GetInt64Ex("st_size", &mObjectSize);
66	if (RT_FAILURE(rc)) throw rc;
67	/** @todo Add complete ls info! */
68	}
69	catch (int rc2)
70	{
71	rc = rc2;
72	}
73
74	LogFlowFuncLeaveRC(rc);
75	return rc;
76	}
77
78	int GuestFsObjData::FromMkTemp(const GuestProcessStreamBlock &strmBlk)
79	{
80	LogFlowFunc(("\n"));
81
82	int rc;
83
84	try
85	{
86	#ifdef DEBUG
87	strmBlk.DumpToLog();
88	#endif
89	/* Object name. */
90	mName = strmBlk.GetString("name");
91	if (mName.isEmpty()) throw VERR_NOT_FOUND;
92	/* Assign the stream block's rc. */
93	rc = strmBlk.GetRc();
94	}
95	catch (int rc2)
96	{
97	rc = rc2;
98	}
99
100	LogFlowFuncLeaveRC(rc);
101	return rc;
102	}
103
104	int GuestFsObjData::FromStat(const GuestProcessStreamBlock &strmBlk)
105	{
106	LogFlowFunc(("\n"));
107
108	int rc = VINF_SUCCESS;
109
110	try
111	{
112	#ifdef DEBUG
113	strmBlk.DumpToLog();
114	#endif
115	/* Node ID, optional because we don't include this
116	* in older VBoxService (< 4.2) versions. */
117	mNodeID = strmBlk.GetInt64("node_id");
118	/* Object name. */
119	mName = strmBlk.GetString("name");
120	if (mName.isEmpty()) throw VERR_NOT_FOUND;
121	/* Type. */
122	Utf8Str strType(strmBlk.GetString("ftype"));
123	if (strType.equalsIgnoreCase("-"))
124	mType = FsObjType_File;
125	else if (strType.equalsIgnoreCase("d"))
126	mType = FsObjType_Directory;
127	/** @todo Add more types! */
128	else
129	mType = FsObjType_Unknown;
130	/* Object size. */
131	rc = strmBlk.GetInt64Ex("st_size", &mObjectSize);
132	if (RT_FAILURE(rc)) throw rc;
133	/** @todo Add complete stat info! */
134	}
135	catch (int rc2)
136	{
137	rc = rc2;
138	}
139
140	LogFlowFuncLeaveRC(rc);
141	return rc;
142	}
143
144	///////////////////////////////////////////////////////////////////////////////
145
146	/** @todo NOT thread safe yet! */
147	/** @todo Add exception handling for STL stuff! */
148
149	GuestProcessStreamBlock::GuestProcessStreamBlock(void)
150	{
151
152	}
153
154	/*
155	GuestProcessStreamBlock::GuestProcessStreamBlock(const GuestProcessStreamBlock &otherBlock)
156	{
157	for (GuestCtrlStreamPairsIter it = otherBlock.mPairs.begin();
158	it != otherBlock.end(); ++it)
159	{
160	mPairs[it->first] = new
161	if (it->second.pszValue)
162	{
163	RTMemFree(it->second.pszValue);
164	it->second.pszValue = NULL;
165	}
166	}
167	}*/
168
169	GuestProcessStreamBlock::~GuestProcessStreamBlock()
170	{
171	Clear();
172	}
173
174	/**
175	* Destroys the currently stored stream pairs.
176	*
177	* @return IPRT status code.
178	*/
179	void GuestProcessStreamBlock::Clear(void)
180	{
181	mPairs.clear();
182	}
183
184	#ifdef DEBUG
185	void GuestProcessStreamBlock::DumpToLog(void) const
186	{
187	LogFlowFunc(("Dumping contents of stream block=0x%p (%ld items):\n",
188	this, mPairs.size()));
189
190	for (GuestCtrlStreamPairMapIterConst it = mPairs.begin();
191	it != mPairs.end(); ++it)
192	{
193	LogFlowFunc(("\t%s=%s\n", it->first.c_str(), it->second.mValue.c_str()));
194	}
195	}
196	#endif
197
198	/**
199	* Returns a 64-bit signed integer of a specified key.
200	*
201	* @return IPRT status code. VERR_NOT_FOUND if key was not found.
202	* @param pszKey Name of key to get the value for.
203	* @param piVal Pointer to value to return.
204	*/
205	int GuestProcessStreamBlock::GetInt64Ex(const char pszKey, int64_t piVal) const
206	{
207	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
208	AssertPtrReturn(piVal, VERR_INVALID_POINTER);
209	const char *pszValue = GetString(pszKey);
210	if (pszValue)
211	{
212	*piVal = RTStrToInt64(pszValue);
213	return VINF_SUCCESS;
214	}
215	return VERR_NOT_FOUND;
216	}
217
218	/**
219	* Returns a 64-bit integer of a specified key.
220	*
221	* @return int64_t Value to return, 0 if not found / on failure.
222	* @param pszKey Name of key to get the value for.
223	*/
224	int64_t GuestProcessStreamBlock::GetInt64(const char *pszKey) const
225	{
226	int64_t iVal;
227	if (RT_SUCCESS(GetInt64Ex(pszKey, &iVal)))
228	return iVal;
229	return 0;
230	}
231
232	/**
233	* Returns the current number of stream pairs.
234	*
235	* @return uint32_t Current number of stream pairs.
236	*/
237	size_t GuestProcessStreamBlock::GetCount(void) const
238	{
239	return mPairs.size();
240	}
241
242	/**
243	* Gets the return code (name = "rc") of this stream block.
244	*
245	* @return IPRT status code.
246	*/
247	int GuestProcessStreamBlock::GetRc(void) const
248	{
249	const char *pszValue = GetString("rc");
250	if (pszValue)
251	{
252	return RTStrToInt16(pszValue);
253	}
254	return VERR_NOT_FOUND;
255	}
256
257	/**
258	* Returns a string value of a specified key.
259	*
260	* @return uint32_t Pointer to string to return, NULL if not found / on failure.
261	* @param pszKey Name of key to get the value for.
262	*/
263	const char* GuestProcessStreamBlock::GetString(const char *pszKey) const
264	{
265	AssertPtrReturn(pszKey, NULL);
266
267	try
268	{
269	GuestCtrlStreamPairMapIterConst itPairs = mPairs.find(Utf8Str(pszKey));
270	if (itPairs != mPairs.end())
271	return itPairs->second.mValue.c_str();
272	}
273	catch (const std::exception &ex)
274	{
275	NOREF(ex);
276	}
277	return NULL;
278	}
279
280	/**
281	* Returns a 32-bit unsigned integer of a specified key.
282	*
283	* @return IPRT status code. VERR_NOT_FOUND if key was not found.
284	* @param pszKey Name of key to get the value for.
285	* @param puVal Pointer to value to return.
286	*/
287	int GuestProcessStreamBlock::GetUInt32Ex(const char pszKey, uint32_t puVal) const
288	{
289	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
290	AssertPtrReturn(puVal, VERR_INVALID_POINTER);
291	const char *pszValue = GetString(pszKey);
292	if (pszValue)
293	{
294	*puVal = RTStrToUInt32(pszValue);
295	return VINF_SUCCESS;
296	}
297	return VERR_NOT_FOUND;
298	}
299
300	/**
301	* Returns a 32-bit unsigned integer of a specified key.
302	*
303	* @return uint32_t Value to return, 0 if not found / on failure.
304	* @param pszKey Name of key to get the value for.
305	*/
306	uint32_t GuestProcessStreamBlock::GetUInt32(const char *pszKey) const
307	{
308	uint32_t uVal;
309	if (RT_SUCCESS(GetUInt32Ex(pszKey, &uVal)))
310	return uVal;
311	return 0;
312	}
313
314	/**
315	* Sets a value to a key or deletes a key by setting a NULL value.
316	*
317	* @return IPRT status code.
318	* @param pszKey Key name to process.
319	* @param pszValue Value to set. Set NULL for deleting the key.
320	*/
321	int GuestProcessStreamBlock::SetValue(const char pszKey, const char pszValue)
322	{
323	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
324
325	int rc = VINF_SUCCESS;
326	try
327	{
328	Utf8Str Utf8Key(pszKey);
329
330	/* Take a shortcut and prevent crashes on some funny versions
331	* of STL if map is empty initially. */
332	if (!mPairs.empty())
333	{
334	GuestCtrlStreamPairMapIter it = mPairs.find(Utf8Key);
335	if (it != mPairs.end())
336	mPairs.erase(it);
337	}
338
339	if (pszValue)
340	{
341	GuestProcessStreamValue val(pszValue);
342	mPairs[Utf8Key] = val;
343	}
344	}
345	catch (const std::exception &ex)
346	{
347	NOREF(ex);
348	}
349	return rc;
350	}
351
352	///////////////////////////////////////////////////////////////////////////////
353
354	GuestProcessStream::GuestProcessStream(void)
355	: m_cbAllocated(0),
356	m_cbUsed(0),
357	m_offBuffer(0),
358	m_pbBuffer(NULL)
359	{
360
361	}
362
363	GuestProcessStream::~GuestProcessStream(void)
364	{
365	Destroy();
366	}
367
368	/**
369	* Adds data to the internal parser buffer. Useful if there
370	* are multiple rounds of adding data needed.
371	*
372	* @return IPRT status code.
373	* @param pbData Pointer to data to add.
374	* @param cbData Size (in bytes) of data to add.
375	*/
376	int GuestProcessStream::AddData(const BYTE *pbData, size_t cbData)
377	{
378	AssertPtrReturn(pbData, VERR_INVALID_POINTER);
379	AssertReturn(cbData, VERR_INVALID_PARAMETER);
380
381	int rc = VINF_SUCCESS;
382
383	/* Rewind the buffer if it's empty. */
384	size_t cbInBuf = m_cbUsed - m_offBuffer;
385	bool const fAddToSet = cbInBuf == 0;
386	if (fAddToSet)
387	m_cbUsed = m_offBuffer = 0;
388
389	/* Try and see if we can simply append the data. */
390	if (cbData + m_cbUsed <= m_cbAllocated)
391	{
392	memcpy(&m_pbBuffer[m_cbUsed], pbData, cbData);
393	m_cbUsed += cbData;
394	}
395	else
396	{
397	/* Move any buffered data to the front. */
398	cbInBuf = m_cbUsed - m_offBuffer;
399	if (cbInBuf == 0)
400	m_cbUsed = m_offBuffer = 0;
401	else if (m_offBuffer) /* Do we have something to move? */
402	{
403	memmove(m_pbBuffer, &m_pbBuffer[m_offBuffer], cbInBuf);
404	m_cbUsed = cbInBuf;
405	m_offBuffer = 0;
406	}
407
408	/* Do we need to grow the buffer? */
409	if (cbData + m_cbUsed > m_cbAllocated)
410	{
411	/** @todo Put an upper limit on the allocation? */
412	size_t cbAlloc = m_cbUsed + cbData;
413	cbAlloc = RT_ALIGN_Z(cbAlloc, _64K);
414	void *pvNew = RTMemRealloc(m_pbBuffer, cbAlloc);
415	if (pvNew)
416	{
417	m_pbBuffer = (uint8_t *)pvNew;
418	m_cbAllocated = cbAlloc;
419	}
420	else
421	rc = VERR_NO_MEMORY;
422	}
423
424	/* Finally, copy the data. */
425	if (RT_SUCCESS(rc))
426	{
427	if (cbData + m_cbUsed <= m_cbAllocated)
428	{
429	memcpy(&m_pbBuffer[m_cbUsed], pbData, cbData);
430	m_cbUsed += cbData;
431	}
432	else
433	rc = VERR_BUFFER_OVERFLOW;
434	}
435	}
436
437	return rc;
438	}
439
440	/**
441	* Destroys the internal data buffer.
442	*/
443	void GuestProcessStream::Destroy(void)
444	{
445	if (m_pbBuffer)
446	{
447	RTMemFree(m_pbBuffer);
448	m_pbBuffer = NULL;
449	}
450
451	m_cbAllocated = 0;
452	m_cbUsed = 0;
453	m_offBuffer = 0;
454	}
455
456	#ifdef DEBUG
457	void GuestProcessStream::Dump(const char *pszFile)
458	{
459	LogFlowFunc(("Dumping contents of stream=0x%p (cbAlloc=%u, cbSize=%u, cbOff=%u) to %s\n",
460	m_pbBuffer, m_cbAllocated, m_cbUsed, m_offBuffer, pszFile));
461
462	RTFILE hFile;
463	int rc = RTFileOpen(&hFile, pszFile, RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
464	if (RT_SUCCESS(rc))
465	{
466	rc = RTFileWrite(hFile, m_pbBuffer, m_cbUsed, NULL /* pcbWritten */);
467	RTFileClose(hFile);
468	}
469	}
470	#endif
471
472	/**
473	* Tries to parse the next upcoming pair block within the internal
474	* buffer.
475	*
476	* Returns VERR_NO_DATA is no data is in internal buffer or buffer has been
477	* completely parsed already.
478	*
479	* Returns VERR_MORE_DATA if current block was parsed (with zero or more pairs
480	* stored in stream block) but still contains incomplete (unterminated)
481	* data.
482	*
483	* Returns VINF_SUCCESS if current block was parsed until the next upcoming
484	* block (with zero or more pairs stored in stream block).
485	*
486	* @return IPRT status code.
487	* @param streamBlock Reference to guest stream block to fill.
488	*
489	*/
490	int GuestProcessStream::ParseBlock(GuestProcessStreamBlock &streamBlock)
491	{
492	if ( !m_pbBuffer
493	\|\| !m_cbUsed)
494	{
495	return VERR_NO_DATA;
496	}
497
498	AssertReturn(m_offBuffer <= m_cbUsed, VERR_INVALID_PARAMETER);
499	if (m_offBuffer == m_cbUsed)
500	return VERR_NO_DATA;
501
502	int rc = VINF_SUCCESS;
503
504	char pszOff = (char)&m_pbBuffer[m_offBuffer];
505	char *pszStart = pszOff;
506	uint32_t uDistance;
507	while (*pszStart)
508	{
509	size_t pairLen = strlen(pszStart);
510	uDistance = (pszStart - pszOff);
511	if (m_offBuffer + uDistance + pairLen + 1 >= m_cbUsed)
512	{
513	rc = VERR_MORE_DATA;
514	break;
515	}
516	else
517	{
518	char *pszSep = strchr(pszStart, '=');
519	char *pszVal = NULL;
520	if (pszSep)
521	pszVal = pszSep + 1;
522	if (!pszSep \|\| !pszVal)
523	{
524	rc = VERR_MORE_DATA;
525	break;
526	}
527
528	/* Terminate the separator so that we can
529	* use pszStart as our key from now on. */
530	*pszSep = '\0';
531
532	rc = streamBlock.SetValue(pszStart, pszVal);
533	if (RT_FAILURE(rc))
534	return rc;
535	}
536
537	/* Next pair. */
538	pszStart += pairLen + 1;
539	}
540
541	/* If we did not do any movement but we have stuff left
542	* in our buffer just skip the current termination so that
543	* we can try next time. */
544	uDistance = (pszStart - pszOff);
545	if ( !uDistance
546	&& *pszStart == '\0'
547	&& m_offBuffer < m_cbUsed)
548	{
549	uDistance++;
550	}
551	m_offBuffer += uDistance;
552
553	return rc;
554	}
555
556	GuestBase::GuestBase(void)
557	: mConsole(NULL),
558	mNextContextID(0)
559	{
560	}
561
562	GuestBase::~GuestBase(void)
563	{
564	}
565
566	int GuestBase::baseInit(void)
567	{
568	int rc = RTCritSectInit(&mWaitEventCritSect);
569
570	LogFlowFuncLeaveRC(rc);
571	return rc;
572	}
573
574	void GuestBase::baseUninit(void)
575	{
576	LogFlowThisFuncEnter();
577
578	int rc = RTCritSectDelete(&mWaitEventCritSect);
579	NOREF(rc);
580
581	LogFlowFuncLeaveRC(rc);
582	/* No return value. */
583	}
584
585	int GuestBase::cancelWaitEvents(void)
586	{
587	LogFlowThisFuncEnter();
588
589	int rc = RTCritSectEnter(&mWaitEventCritSect);
590	if (RT_SUCCESS(rc))
591	{
592	GuestEventGroup::iterator itEventGroups = mWaitEventGroups.begin();
593	while (itEventGroups != mWaitEventGroups.end())
594	{
595	GuestWaitEvents::iterator itEvents = itEventGroups->second.begin();
596	while (itEvents != itEventGroups->second.end())
597	{
598	GuestWaitEvent *pEvent = itEvents->second;
599	AssertPtr(pEvent);
600
601	/*
602	* Just cancel the event, but don't remove it from the
603	* wait events map. Don't delete it though, this (hopefully)
604	* is done by the caller using unregisterWaitEvent().
605	*/
606	int rc2 = pEvent->Cancel();
607	AssertRC(rc2);
608
609	++itEvents;
610	}
611
612	++itEventGroups;
613	}
614
615	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
616	if (RT_SUCCESS(rc))
617	rc = rc2;
618	}
619
620	LogFlowFuncLeaveRC(rc);
621	return rc;
622	}
623
624	int GuestBase::dispatchGeneric(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
625	{
626	LogFlowFunc(("pCtxCb=%p, pSvcCb=%p\n", pCtxCb, pSvcCb));
627
628	AssertPtrReturn(pCtxCb, VERR_INVALID_POINTER);
629	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
630
631	int vrc = VINF_SUCCESS;
632
633	try
634	{
635	LogFlowFunc(("uFunc=%RU32, cParms=%RU32\n",
636	pCtxCb->uFunction, pSvcCb->mParms));
637
638	switch (pCtxCb->uFunction)
639	{
640	case GUEST_MSG_PROGRESS_UPDATE:
641	break;
642
643	case GUEST_MSG_REPLY:
644	{
645	if (pSvcCb->mParms >= 3)
646	{
647	int idx = 1; /* Current parameter index. */
648	CALLBACKDATA_MSG_REPLY dataCb;
649	/* pSvcCb->mpaParms[0] always contains the context ID. */
650	vrc = pSvcCb->mpaParms[idx++].getUInt32(&dataCb.uType);
651	AssertRCReturn(vrc, vrc);
652	vrc = pSvcCb->mpaParms[idx++].getUInt32(&dataCb.rc);
653	AssertRCReturn(vrc, vrc);
654	vrc = pSvcCb->mpaParms[idx++].getPointer(&dataCb.pvPayload, &dataCb.cbPayload);
655	AssertRCReturn(vrc, vrc);
656
657	GuestWaitEventPayload evPayload(dataCb.uType, dataCb.pvPayload, dataCb.cbPayload);
658	int rc2 = signalWaitEventInternal(pCtxCb, dataCb.rc, &evPayload);
659	AssertRC(rc2);
660	}
661	else
662	vrc = VERR_INVALID_PARAMETER;
663	break;
664	}
665
666	default:
667	vrc = VERR_NOT_SUPPORTED;
668	break;
669	}
670	}
671	catch (std::bad_alloc)
672	{
673	vrc = VERR_NO_MEMORY;
674	}
675	catch (int rc)
676	{
677	vrc = rc;
678	}
679
680	LogFlowFuncLeaveRC(vrc);
681	return vrc;
682	}
683
684	int GuestBase::generateContextID(uint32_t uSessionID, uint32_t uObjectID, uint32_t *puContextID)
685	{
686	AssertPtrReturn(puContextID, VERR_INVALID_POINTER);
687
688	if ( uSessionID >= VBOX_GUESTCTRL_MAX_SESSIONS
689	\|\| uObjectID >= VBOX_GUESTCTRL_MAX_OBJECTS)
690	return VERR_INVALID_PARAMETER;
691
692	uint32_t uCount = ASMAtomicIncU32(&mNextContextID);
693	if (uCount == VBOX_GUESTCTRL_MAX_CONTEXTS)
694	uCount = 0;
695
696	uint32_t uNewContextID =
697	VBOX_GUESTCTRL_CONTEXTID_MAKE(uSessionID, uObjectID, uCount);
698
699	*puContextID = uNewContextID;
700
701	#if 0
702	LogFlowThisFunc(("mNextContextID=%RU32, uSessionID=%RU32, uObjectID=%RU32, uCount=%RU32, uNewContextID=%RU32\n",
703	mNextContextID, uSessionID, uObjectID, uCount, uNewContextID));
704	#endif
705	return VINF_SUCCESS;
706	}
707
708	int GuestBase::registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID,
709	GuestWaitEvent **ppEvent)
710	{
711	GuestEventTypes eventTypesEmpty;
712	return registerWaitEvent(uSessionID, uObjectID, eventTypesEmpty, ppEvent);
713	}
714
715	/**
716	* Registers (creates) a new wait event based on a given session and object ID.
717	*
718	* From those IDs an unique context ID (CID) will be built, which only can be
719	* around once at a time.
720	*
721	* @returns IPRT status code. VERR_ALREADY_EXISTS if an event with the given session
722	* and object ID already has been registered.
723	*
724	* @param uSessionID Session ID to register wait event for.
725	* @param uObjectID Object ID to register wait event for.
726	* @param lstEvents List of events to register the wait event for.
727	* @param ppEvent Pointer to registered (created) wait event on success.
728	* Must be destroyed with unregisterWaitEvent().
729	*/
730	int GuestBase::registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID,
731	const GuestEventTypes &lstEvents,
732	GuestWaitEvent **ppEvent)
733	{
734	AssertPtrReturn(ppEvent, VERR_INVALID_POINTER);
735
736	uint32_t uContextID;
737	int rc = generateContextID(uSessionID, uObjectID, &uContextID);
738	if (RT_FAILURE(rc))
739	return rc;
740
741	rc = RTCritSectEnter(&mWaitEventCritSect);
742	if (RT_SUCCESS(rc))
743	{
744	try
745	{
746	GuestWaitEvent *pEvent = new GuestWaitEvent(uContextID, lstEvents);
747	AssertPtr(pEvent);
748
749	LogFlowThisFunc(("New event=%p, CID=%RU32\n", pEvent, uContextID));
750
751	/* Insert event into matching event group. This is for faster per-group
752	* lookup of all events later. */
753	for (GuestEventTypes::const_iterator itEvents = lstEvents.begin();
754	itEvents != lstEvents.end(); ++itEvents)
755	{
756	/* Check if the event group already has an event with the same
757	* context ID in it (collision). */
758	GuestWaitEvents eventGroup = mWaitEventGroups[(*itEvents)];
759	if (eventGroup.find(uContextID) == eventGroup.end())
760	{
761	/* No, insert. */
762	mWaitEventGroups[(itEvents)].insert(std::pair<uint32_t, GuestWaitEvent >(uContextID, pEvent));
763	}
764	else
765	{
766	rc = VERR_ALREADY_EXISTS;
767	break;
768	}
769	}
770
771	if (RT_SUCCESS(rc))
772	{
773	/* Register event in regular event list. */
774	if (mWaitEvents.find(uContextID) == mWaitEvents.end())
775	{
776	mWaitEvents[uContextID] = pEvent;
777	}
778	else
779	rc = VERR_ALREADY_EXISTS;
780	}
781
782	if (RT_SUCCESS(rc))
783	*ppEvent = pEvent;
784	}
785	catch(std::bad_alloc &)
786	{
787	rc = VERR_NO_MEMORY;
788	}
789
790	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
791	if (RT_SUCCESS(rc))
792	rc = rc2;
793	}
794
795	return rc;
796	}
797
798	int GuestBase::signalWaitEvent(VBoxEventType_T aType, IEvent *aEvent)
799	{
800	int rc = RTCritSectEnter(&mWaitEventCritSect);
801	#ifdef DEBUG
802	uint32_t cEvents = 0;
803	#endif
804	if (RT_SUCCESS(rc))
805	{
806	GuestEventGroup::iterator itGroup = mWaitEventGroups.find(aType);
807	if (itGroup != mWaitEventGroups.end())
808	{
809	GuestWaitEvents::iterator itEvents = itGroup->second.begin();
810	while (itEvents != itGroup->second.end())
811	{
812	#ifdef DEBUG
813	LogFlowThisFunc(("Signalling event=%p, type=%ld (CID %RU32: Session=%RU32, Object=%RU32, Count=%RU32) ...\n",
814	itEvents->second, aType, itEvents->first,
815	VBOX_GUESTCTRL_CONTEXTID_GET_SESSION(itEvents->first),
816	VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(itEvents->first),
817	VBOX_GUESTCTRL_CONTEXTID_GET_COUNT(itEvents->first)));
818	#endif
819	ComPtr<IEvent> pThisEvent = aEvent;
820	Assert(!pThisEvent.isNull());
821	int rc2 = itEvents->second->SignalExternal(aEvent);
822	if (RT_SUCCESS(rc))
823	rc = rc2;
824
825	if (RT_SUCCESS(rc2))
826	{
827	/* Remove the event from all other event groups (except the
828	* original one!) because it was signalled. */
829	AssertPtr(itEvents->second);
830	const GuestEventTypes evTypes = itEvents->second->Types();
831	for (GuestEventTypes::const_iterator itType = evTypes.begin();
832	itType != evTypes.end(); ++itType)
833	{
834	if ((itType) != aType) / Only remove all other groups. */
835	{
836	/* Get current event group. */
837	GuestEventGroup::iterator evGroup = mWaitEventGroups.find((*itType));
838	Assert(evGroup != mWaitEventGroups.end());
839
840	/* Lookup event in event group. */
841	GuestWaitEvents::iterator evEvent = evGroup->second.find(itEvents->first /* Context ID */);
842	Assert(evEvent != evGroup->second.end());
843
844	LogFlowThisFunc(("Removing event=%p (type %ld)\n", evEvent->second, (*itType)));
845	evGroup->second.erase(evEvent);
846
847	LogFlowThisFunc(("%zu events for type=%ld left\n",
848	evGroup->second.size(), aType));
849	}
850	}
851
852	/* Remove the event from the passed-in event group. */
853	GuestWaitEvents::iterator itEventsNext = itEvents;
854	++itEventsNext;
855	itGroup->second.erase(itEvents);
856	itEvents = itEventsNext;
857	}
858	else
859	++itEvents;
860	#ifdef DEBUG
861	cEvents++;
862	#endif
863	}
864	}
865
866	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
867	if (RT_SUCCESS(rc))
868	rc = rc2;
869	}
870
871	#ifdef DEBUG
872	LogFlowThisFunc(("Signalled %RU32 events, rc=%Rrc\n", cEvents, rc));
873	#endif
874	return rc;
875	}
876
877	int GuestBase::signalWaitEventInternal(PVBOXGUESTCTRLHOSTCBCTX pCbCtx,
878	int guestRc, const GuestWaitEventPayload *pPayload)
879	{
880	if (RT_SUCCESS(guestRc))
881	return signalWaitEventInternalEx(pCbCtx, VINF_SUCCESS,
882	0 /* Guest rc */, pPayload);
883
884	return signalWaitEventInternalEx(pCbCtx, VERR_GSTCTL_GUEST_ERROR,
885	guestRc, pPayload);
886	}
887
888	int GuestBase::signalWaitEventInternalEx(PVBOXGUESTCTRLHOSTCBCTX pCbCtx,
889	int rc, int guestRc,
890	const GuestWaitEventPayload *pPayload)
891	{
892	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
893	/* pPayload is optional. */
894
895	int rc2 = RTCritSectEnter(&mWaitEventCritSect);
896	if (RT_SUCCESS(rc2))
897	{
898	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pCbCtx->uContextID);
899	if (itEvent != mWaitEvents.end())
900	{
901	LogFlowThisFunc(("Signalling event=%p (CID %RU32, rc=%Rrc, guestRc=%Rrc, pPayload=%p) ...\n",
902	itEvent->second, itEvent->first, rc, guestRc, pPayload));
903	GuestWaitEvent *pEvent = itEvent->second;
904	AssertPtr(pEvent);
905	rc2 = pEvent->SignalInternal(rc, guestRc, pPayload);
906	}
907	else
908	rc2 = VERR_NOT_FOUND;
909
910	int rc3 = RTCritSectLeave(&mWaitEventCritSect);
911	if (RT_SUCCESS(rc2))
912	rc2 = rc3;
913	}
914
915	return rc2;
916	}
917
918	/**
919	* Unregisters (deletes) a wait event.
920	*
921	* After successful unregistration the event will not be valid anymore.
922	*
923	* @returns IPRT status code.
924	* @param pEvent Event to unregister (delete).
925	*/
926	int GuestBase::unregisterWaitEvent(GuestWaitEvent *pEvent)
927	{
928	if (!pEvent) /* Nothing to unregister. */
929	return VINF_SUCCESS;
930
931	int rc = RTCritSectEnter(&mWaitEventCritSect);
932	if (RT_SUCCESS(rc))
933	{
934	LogFlowThisFunc(("pEvent=%p\n", pEvent));
935
936	try
937	{
938	/* Remove the event from all event type groups. */
939	const GuestEventTypes lstTypes = pEvent->Types();
940	for (GuestEventTypes::const_iterator itType = lstTypes.begin();
941	itType != lstTypes.end(); ++itType)
942	{
943	/** @todo Slow O(n) lookup. Optimize this. */
944	GuestWaitEvents::iterator itCurEvent = mWaitEventGroups[(*itType)].begin();
945	while (itCurEvent != mWaitEventGroups[(*itType)].end())
946	{
947	if (itCurEvent->second == pEvent)
948	{
949	mWaitEventGroups[(*itType)].erase(itCurEvent);
950	break;
951	}
952	else
953	++itCurEvent;
954	}
955	}
956
957	/* Remove the event from the general event list as well. */
958	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pEvent->ContextID());
959
960	Assert(itEvent != mWaitEvents.end());
961	Assert(itEvent->second == pEvent);
962
963	mWaitEvents.erase(itEvent);
964
965	delete pEvent;
966	pEvent = NULL;
967	}
968	catch (const std::exception &ex)
969	{
970	NOREF(ex);
971	AssertFailedStmt(rc = VERR_NOT_FOUND);
972	}
973
974	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
975	if (RT_SUCCESS(rc))
976	rc = rc2;
977	}
978
979	return rc;
980	}
981
982	/**
983	* Waits for a formerly registered guest event.
984	*
985	* @return IPRT status code.
986	* @param pEvent Pointer to event to wait for.
987	* @param uTimeoutMS Timeout (in ms) for waiting.
988	* @param pType Event type of following IEvent.
989	* Optional.
990	* @param ppEvent Pointer to IEvent which got triggered
991	* for this event. Optional.
992	*/
993	int GuestBase::waitForEvent(GuestWaitEvent *pEvent, uint32_t uTimeoutMS,
994	VBoxEventType_T pType, IEvent *ppEvent)
995	{
996	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
997	/* pType is optional. */
998	/* ppEvent is optional. */
999
1000	int vrc = pEvent->Wait(uTimeoutMS);
1001	if (RT_SUCCESS(vrc))
1002	{
1003	const ComPtr<IEvent> pThisEvent = pEvent->Event();
1004	if (!pThisEvent.isNull()) /* Having a VBoxEventType_ event is optional. */
1005	{
1006	if (pType)
1007	{
1008	HRESULT hr = pThisEvent->COMGETTER(Type)(pType);
1009	if (FAILED(hr))
1010	vrc = VERR_COM_UNEXPECTED;
1011	}
1012	if ( RT_SUCCESS(vrc)
1013	&& ppEvent)
1014	pThisEvent.queryInterfaceTo(ppEvent);
1015
1016	unconst(pThisEvent).setNull();
1017	}
1018	}
1019
1020	return vrc;
1021	}
1022
1023	GuestObject::GuestObject(void)
1024	: mSession(NULL),
1025	mObjectID(0)
1026	{
1027	}
1028
1029	GuestObject::~GuestObject(void)
1030	{
1031	}
1032
1033	int GuestObject::bindToSession(Console pConsole, GuestSession pSession, uint32_t uObjectID)
1034	{
1035	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
1036	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
1037
1038	mConsole = pConsole;
1039	mSession = pSession;
1040	mObjectID = uObjectID;
1041
1042	return VINF_SUCCESS;
1043	}
1044
1045	int GuestObject::registerWaitEvent(const GuestEventTypes &lstEvents,
1046	GuestWaitEvent **ppEvent)
1047	{
1048	AssertPtr(mSession);
1049	return GuestBase::registerWaitEvent(mSession->i_getId(), mObjectID, lstEvents, ppEvent);
1050	}
1051
1052	int GuestObject::sendCommand(uint32_t uFunction,
1053	uint32_t cParms, PVBOXHGCMSVCPARM paParms)
1054	{
1055	#ifndef VBOX_GUESTCTRL_TEST_CASE
1056	ComObjPtr<Console> pConsole = mConsole;
1057	Assert(!pConsole.isNull());
1058
1059	int vrc = VERR_HGCM_SERVICE_NOT_FOUND;
1060
1061	/* Forward the information to the VMM device. */
1062	VMMDev *pVMMDev = pConsole->i_getVMMDev();
1063	if (pVMMDev)
1064	{
1065	LogFlowThisFunc(("uFunction=%RU32, cParms=%RU32\n", uFunction, cParms));
1066	vrc = pVMMDev->hgcmHostCall(HGCMSERVICE_NAME, uFunction, cParms, paParms);
1067	if (RT_FAILURE(vrc))
1068	{
1069	/** @todo What to do here? */
1070	}
1071	}
1072	#else
1073	LogFlowThisFuncEnter();
1074
1075	/* Not needed within testcases. */
1076	RT_NOREF(uFunction, cParms, paParms);
1077	int vrc = VINF_SUCCESS;
1078	#endif
1079	return vrc;
1080	}
1081
1082	GuestWaitEventBase::GuestWaitEventBase(void)
1083	: mfAborted(false),
1084	mCID(0),
1085	mEventSem(NIL_RTSEMEVENT),
1086	mRc(VINF_SUCCESS),
1087	mGuestRc(VINF_SUCCESS)
1088	{
1089	}
1090
1091	GuestWaitEventBase::~GuestWaitEventBase(void)
1092	{
1093	if (mEventSem != NIL_RTSEMEVENT)
1094	{
1095	RTSemEventDestroy(mEventSem);
1096	mEventSem = NIL_RTSEMEVENT;
1097	}
1098	}
1099
1100	int GuestWaitEventBase::Init(uint32_t uCID)
1101	{
1102	mCID = uCID;
1103
1104	return RTSemEventCreate(&mEventSem);
1105	}
1106
1107	int GuestWaitEventBase::SignalInternal(int rc, int guestRc,
1108	const GuestWaitEventPayload *pPayload)
1109	{
1110	if (ASMAtomicReadBool(&mfAborted))
1111	return VERR_CANCELLED;
1112
1113	#ifdef VBOX_STRICT
1114	if (rc == VERR_GSTCTL_GUEST_ERROR)
1115	AssertMsg(RT_FAILURE(guestRc), ("Guest error indicated but no actual guest error set (%Rrc)\n", guestRc));
1116	else
1117	AssertMsg(RT_SUCCESS(guestRc), ("No guest error indicated but actual guest error set (%Rrc)\n", guestRc));
1118	#endif
1119
1120	int rc2;
1121	if (pPayload)
1122	rc2 = mPayload.CopyFromDeep(*pPayload);
1123	else
1124	rc2 = VINF_SUCCESS;
1125	if (RT_SUCCESS(rc2))
1126	{
1127	mRc = rc;
1128	mGuestRc = guestRc;
1129
1130	rc2 = RTSemEventSignal(mEventSem);
1131	}
1132
1133	return rc2;
1134	}
1135
1136	int GuestWaitEventBase::Wait(RTMSINTERVAL uTimeoutMS)
1137	{
1138	int rc = VINF_SUCCESS;
1139
1140	if (ASMAtomicReadBool(&mfAborted))
1141	rc = VERR_CANCELLED;
1142
1143	if (RT_SUCCESS(rc))
1144	{
1145	AssertReturn(mEventSem != NIL_RTSEMEVENT, VERR_CANCELLED);
1146
1147	RTMSINTERVAL msInterval = uTimeoutMS;
1148	if (!uTimeoutMS)
1149	msInterval = RT_INDEFINITE_WAIT;
1150	rc = RTSemEventWait(mEventSem, msInterval);
1151	if (ASMAtomicReadBool(&mfAborted))
1152	rc = VERR_CANCELLED;
1153	if (RT_SUCCESS(rc))
1154	{
1155	/* If waiting succeeded, return the overall
1156	* result code. */
1157	rc = mRc;
1158	}
1159	}
1160
1161	return rc;
1162	}
1163
1164	GuestWaitEvent::GuestWaitEvent(uint32_t uCID,
1165	const GuestEventTypes &lstEvents)
1166	{
1167	int rc2 = Init(uCID);
1168	AssertRC(rc2); /** @todo Throw exception here. */
1169
1170	mEventTypes = lstEvents;
1171	}
1172
1173	GuestWaitEvent::GuestWaitEvent(uint32_t uCID)
1174	{
1175	int rc2 = Init(uCID);
1176	AssertRC(rc2); /** @todo Throw exception here. */
1177	}
1178
1179	GuestWaitEvent::~GuestWaitEvent(void)
1180	{
1181
1182	}
1183
1184	/**
1185	* Cancels the event.
1186	*/
1187	int GuestWaitEvent::Cancel(void)
1188	{
1189	AssertReturn(!mfAborted, VERR_CANCELLED);
1190	ASMAtomicWriteBool(&mfAborted, true);
1191
1192	#ifdef DEBUG_andy
1193	LogFlowThisFunc(("Cancelling %p ...\n"));
1194	#endif
1195	return RTSemEventSignal(mEventSem);
1196	}
1197
1198	int GuestWaitEvent::Init(uint32_t uCID)
1199	{
1200	return GuestWaitEventBase::Init(uCID);
1201	}
1202
1203	/**
1204	* Signals the event.
1205	*
1206	* @return IPRT status code.
1207	* @param pEvent Public IEvent to associate.
1208	* Optional.
1209	*/
1210	int GuestWaitEvent::SignalExternal(IEvent *pEvent)
1211	{
1212	AssertReturn(mEventSem != NIL_RTSEMEVENT, VERR_CANCELLED);
1213
1214	if (pEvent)
1215	mEvent = pEvent;
1216
1217	return RTSemEventSignal(mEventSem);
1218	}
1219

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source: vbox/trunk/src/VBox/Main/src-client/GuestCtrlPrivate.cpp@ 69222

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