GuestDirectoryImpl.cpp@ 101054

Last change on this file since 101054 was 99295, checked in by vboxsync, 21 months ago
Guest Additions/Main: Return and document a dedicated error if I[Guest]Directory::list() is not supported by the installed Guest Additions. bugref:9783
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1	/* $Id: GuestDirectoryImpl.cpp 99295 2023-04-05 10:08:15Z vboxsync $ */
2	/** @file
3	* VirtualBox Main - Guest directory handling.
4	*/
5
6	/*
7	* Copyright (C) 2012-2023 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
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_MAIN_GUESTDIRECTORY
33	#include "LoggingNew.h"
34
35	#ifndef VBOX_WITH_GUEST_CONTROL
36	# error "VBOX_WITH_GUEST_CONTROL must defined in this file"
37	#endif
38	#include "GuestImpl.h"
39	#include "GuestDirectoryImpl.h"
40	#include "GuestSessionImpl.h"
41	#include "GuestCtrlImplPrivate.h"
42	#include "VirtualBoxErrorInfoImpl.h"
43
44	#include "Global.h"
45	#include "AutoCaller.h"
46	#include "VBoxEvents.h"
47
48	#include <VBox/com/array.h>
49	#include <VBox/com/listeners.h>
50	#include <VBox/AssertGuest.h>
51
52
53	/**
54	* Internal listener class to serve events in an
55	* active manner, e.g. without polling delays.
56	*/
57	class GuestDirectoryListener
58	{
59	public:
60
61	GuestDirectoryListener(void)
62	{
63	}
64
65	virtual ~GuestDirectoryListener()
66	{
67	}
68
69	HRESULT init(GuestDirectory *pDir)
70	{
71	AssertPtrReturn(pDir, E_POINTER);
72	mDir = pDir;
73	return S_OK;
74	}
75
76	void uninit(void)
77	{
78	mDir = NULL;
79	}
80
81	STDMETHOD(HandleEvent)(VBoxEventType_T aType, IEvent *aEvent)
82	{
83	switch (aType)
84	{
85	case VBoxEventType_OnGuestDirectoryStateChanged:
86	RT_FALL_THROUGH();
87	case VBoxEventType_OnGuestDirectoryRead:
88	{
89	AssertPtrReturn(mDir, E_POINTER);
90	int vrc2 = mDir->signalWaitEvent(aType, aEvent);
91	RT_NOREF(vrc2);
92	#ifdef DEBUG_andy
93	LogFlowFunc(("Signalling events of type=%RU32, dir=%p resulted in vrc=%Rrc\n",
94	aType, mDir, vrc2));
95	#endif
96	break;
97	}
98
99	default:
100	AssertMsgFailed(("Unhandled event %RU32\n", aType));
101	break;
102	}
103
104	return S_OK;
105	}
106
107	private:
108
109	/** Weak pointer to the guest directory object to listen for. */
110	GuestDirectory *mDir;
111	};
112	typedef ListenerImpl<GuestDirectoryListener, GuestDirectory *> GuestDirectoryListenerImpl;
113
114	VBOX_LISTENER_DECLARE(GuestDirectoryListenerImpl)
115
116	// constructor / destructor
117	/////////////////////////////////////////////////////////////////////////////
118
119	DEFINE_EMPTY_CTOR_DTOR(GuestDirectory)
120
121	HRESULT GuestDirectory::FinalConstruct(void)
122	{
123	LogFlowThisFunc(("\n"));
124	return BaseFinalConstruct();
125	}
126
127	void GuestDirectory::FinalRelease(void)
128	{
129	LogFlowThisFuncEnter();
130	uninit();
131	BaseFinalRelease();
132	LogFlowThisFuncLeave();
133	}
134
135	// public initializer/uninitializer for internal purposes only
136	/////////////////////////////////////////////////////////////////////////////
137
138	int GuestDirectory::init(Console pConsole, GuestSession pSession, ULONG aObjectID, const GuestDirectoryOpenInfo &openInfo)
139	{
140	LogFlowThisFunc(("pConsole=%p, pSession=%p, aObjectID=%RU32, strPath=%s, enmFilter=%#x, fFlags=%x\n",
141	pConsole, pSession, aObjectID, openInfo.mPath.c_str(), openInfo.menmFilter, openInfo.mFlags));
142
143	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
144	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
145
146	/* Enclose the state transition NotReady->InInit->Ready. */
147	AutoInitSpan autoInitSpan(this);
148	AssertReturn(autoInitSpan.isOk(), VERR_OBJECT_DESTROYED);
149
150	int vrc = bindToSession(pConsole, pSession, aObjectID);
151	if (RT_SUCCESS(vrc))
152	{
153	mSession = pSession;
154	mObjectID = aObjectID;
155
156	mData.mOpenInfo = openInfo;
157	mData.mStatus = DirectoryStatus_Undefined;
158	mData.mLastError = VINF_SUCCESS;
159
160	unconst(mEventSource).createObject();
161	HRESULT hr = mEventSource->init();
162	if (FAILED(hr))
163	vrc = VERR_COM_UNEXPECTED;
164	}
165
166	if (RT_SUCCESS(vrc))
167	{
168	try
169	{
170	GuestDirectoryListener *pListener = new GuestDirectoryListener();
171	ComObjPtr<GuestDirectoryListenerImpl> thisListener;
172	HRESULT hr = thisListener.createObject();
173	if (SUCCEEDED(hr))
174	hr = thisListener->init(pListener, this);
175
176	if (SUCCEEDED(hr))
177	{
178	com::SafeArray <VBoxEventType_T> eventTypes;
179	eventTypes.push_back(VBoxEventType_OnGuestDirectoryStateChanged);
180	eventTypes.push_back(VBoxEventType_OnGuestDirectoryRead);
181	hr = mEventSource->RegisterListener(thisListener,
182	ComSafeArrayAsInParam(eventTypes),
183	TRUE /* Active listener */);
184	if (SUCCEEDED(hr))
185	{
186	vrc = baseInit();
187	if (RT_SUCCESS(vrc))
188	{
189	mLocalListener = thisListener;
190	}
191	}
192	else
193	vrc = VERR_COM_UNEXPECTED;
194	}
195	else
196	vrc = VERR_COM_UNEXPECTED;
197	}
198	catch(std::bad_alloc &)
199	{
200	vrc = VERR_NO_MEMORY;
201	}
202	}
203
204	/* Confirm a successful initialization when it's the case. */
205	if (RT_SUCCESS(vrc))
206	autoInitSpan.setSucceeded();
207	else
208	autoInitSpan.setFailed();
209
210	LogFlowFuncLeaveRC(vrc);
211	return vrc;
212	}
213
214	/**
215	* Uninitializes the instance.
216	* Called from FinalRelease().
217	*/
218	void GuestDirectory::uninit(void)
219	{
220	LogFlowThisFuncEnter();
221
222	/* Enclose the state transition Ready->InUninit->NotReady. */
223	AutoUninitSpan autoUninitSpan(this);
224	if (autoUninitSpan.uninitDone())
225	return;
226
227	LogFlowThisFuncLeave();
228	}
229
230	// implementation of private wrapped getters/setters for attributes
231	/////////////////////////////////////////////////////////////////////////////
232
233	HRESULT GuestDirectory::getDirectoryName(com::Utf8Str &aDirectoryName)
234	{
235	LogFlowThisFuncEnter();
236
237	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
238
239	aDirectoryName = mData.mOpenInfo.mPath;
240
241	return S_OK;
242	}
243
244	HRESULT GuestDirectory::getEventSource(ComPtr<IEventSource> &aEventSource)
245	{
246	/* No need to lock - lifetime constant. */
247	mEventSource.queryInterfaceTo(aEventSource.asOutParam());
248
249	return S_OK;
250	}
251
252	HRESULT GuestDirectory::getFilter(com::Utf8Str &aFilter)
253	{
254	LogFlowThisFuncEnter();
255
256	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
257
258	aFilter = mData.mOpenInfo.mFilter;
259
260	return S_OK;
261	}
262
263	HRESULT GuestDirectory::getId(ULONG *aId)
264	{
265	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
266
267	*aId = mObjectID;
268
269	return S_OK;
270	}
271
272	HRESULT GuestDirectory::getStatus(DirectoryStatus_T *aStatus)
273	{
274	LogFlowThisFuncEnter();
275
276	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
277
278	*aStatus = mData.mStatus;
279
280	return S_OK;
281	}
282
283	// private methods
284	/////////////////////////////////////////////////////////////////////////////
285
286	/**
287	* Entry point for guest side directory callbacks.
288	*
289	* @returns VBox status code.
290	* @param pCbCtx Host callback context.
291	* @param pSvcCb Host callback data.
292	*/
293	int GuestDirectory::i_callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
294	{
295	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
296	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
297
298	LogFlowThisFunc(("strPath=%s, uContextID=%RU32, uMessage=%RU32, pSvcCb=%p\n",
299	mData.mOpenInfo.mPath.c_str(), pCbCtx->uContextID, pCbCtx->uMessage, pSvcCb));
300
301	int vrc;
302	switch (pCbCtx->uMessage)
303	{
304	case GUEST_MSG_DISCONNECTED:
305	/** @todo vrc = i_onGuestDisconnected(pCbCtx, pSvcCb); */
306	vrc = VINF_SUCCESS; /// @todo To be implemented
307	break;
308
309	case GUEST_MSG_DIR_NOTIFY:
310	{
311	vrc = i_onDirNotify(pCbCtx, pSvcCb);
312	break;
313	}
314
315	default:
316	/* Silently ignore not implemented functions. */
317	vrc = VERR_NOT_SUPPORTED;
318	break;
319	}
320
321	LogFlowFuncLeaveRC(vrc);
322	return vrc;
323	}
324
325	/**
326	* Opens the directory on the guest side.
327	*
328	* @return VBox status code.
329	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
330	*/
331	int GuestDirectory::i_open(int *pvrcGuest)
332	{
333	int vrc;
334	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
335	if ((mSession->i_getParent()->i_getGuestControlFeatures0() & VBOX_GUESTCTRL_GF_0_TOOLBOX_AS_CMDS))
336	{
337	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
338
339	GuestWaitEvent *pEvent = NULL;
340	GuestEventTypes eventTypes;
341	try
342	{
343	eventTypes.push_back(VBoxEventType_OnGuestDirectoryStateChanged);
344
345	vrc = registerWaitEvent(eventTypes, &pEvent);
346	}
347	catch (std::bad_alloc &)
348	{
349	vrc = VERR_NO_MEMORY;
350	}
351
352	if (RT_FAILURE(vrc))
353	return vrc;
354
355	/* Prepare HGCM call. */
356	VBOXHGCMSVCPARM paParms[8];
357	int i = 0;
358	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
359	HGCMSvcSetStr(&paParms[i++], mData.mOpenInfo.mPath.c_str());
360	HGCMSvcSetU32(&paParms[i++], mData.mOpenInfo.menmFilter);
361	HGCMSvcSetU32(&paParms[i++], mData.mOpenInfo.mFlags);
362	HGCMSvcSetU32(&paParms[i++], GSTCTLFSOBJATTRADD_UNIX /* Implicit */);
363	HGCMSvcSetU32(&paParms[i++], GSTCTL_PATH_F_ON_LINK /* Ditto */ );
364
365	alock.release(); /* Drop lock before sending. */
366
367	vrc = sendMessage(HOST_MSG_DIR_OPEN, i, paParms);
368	if (RT_SUCCESS(vrc))
369	vrc = i_waitForStatusChange(pEvent, 30 * 1000, NULL /* FileStatus */, pvrcGuest);
370	}
371	else
372	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
373	{
374	vrc = i_openViaToolbox(pvrcGuest);
375	}
376
377	return vrc;
378	}
379
380	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
381	/**
382	* Opens the directory on the guest side (legacy version).
383	*
384	* @returns VBox status code.
385	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
386	*
387	* @note This uses an own guest process via the built-in toolbox in VBoxSerivce.
388	*/
389	int GuestDirectory::i_openViaToolbox(int *pvrcGuest)
390	{
391	/* Start the directory process on the guest. */
392	GuestProcessStartupInfo procInfo;
393	procInfo.mName.printf(tr("Opening directory \"%s\""), mData.mOpenInfo.mPath.c_str());
394	procInfo.mTimeoutMS = 5 * 60 * 1000; /* 5 minutes timeout. */
395	procInfo.mFlags = ProcessCreateFlag_WaitForStdOut;
396	procInfo.mExecutable= Utf8Str(VBOXSERVICE_TOOL_LS);
397
398	procInfo.mArguments.push_back(procInfo.mExecutable);
399	procInfo.mArguments.push_back(Utf8Str("--machinereadable"));
400	/* We want the long output format which contains all the object details. */
401	procInfo.mArguments.push_back(Utf8Str("-l"));
402	/* Always dereference symlinks by default when opening directories, as we want to show its
403	* contents rather than working directly on the link.
404	*
405	* Newer Linux distros such as Ubuntu 22.10 symlink /bin to /usr/bin, for example. */
406	if (!(mData.mOpenInfo.mFlags & DirectoryOpenFlag_NoSymlinks)) /* Check if the caller explicitly forbids this. */
407	procInfo.mArguments.push_back(Utf8Str("--dereference"));
408	/** @todo Recursion support? */
409	procInfo.mArguments.push_back(mData.mOpenInfo.mPath); /* The directory we want to open. */
410
411	/*
412	* Start the process synchronously and keep it around so that we can use
413	* it later in subsequent read() calls.
414	*/
415	int vrc = mData.mProcessTool.init(mSession, procInfo, false /fAsync/, NULL /pvrcGuest/);
416	if (RT_SUCCESS(vrc))
417	{
418	/* As we need to know if the directory we were about to open exists and and is accessible,
419	* do the first read here in order to return a meaningful status here. */
420	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
421	vrc = i_readInternal(mData.mObjData, &vrcGuest);
422	if (RT_FAILURE(vrc))
423	{
424	/*
425	* We need to actively terminate our process tool in case of an error here,
426	* as this otherwise would be done on (directory) object destruction implicitly.
427	* This in turn then will run into a timeout, as the directory object won't be
428	* around anymore at that time. Ugly, but that's how it is for the moment.
429	*/
430	/* ignore rc / mData.mProcessTool.terminate(30 RT_MS_1SEC, NULL /* pvrcGuest */);
431	}
432
433	if (pvrcGuest)
434	*pvrcGuest = vrcGuest;
435	}
436
437	return vrc;
438	}
439	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
440
441	/**
442	* Called when the guest side notifies the host of a directory event.
443	*
444	* @returns VBox status code.
445	* @param pCbCtx Host callback context.
446	* @param pSvcCbData Host callback data.
447	*/
448	int GuestDirectory::i_onDirNotify(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData)
449	{
450	#ifndef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
451	RT_NOREF(pCbCtx, pSvcCbData);
452	return VERR_NOT_SUPPORTED;
453	#else
454	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
455	AssertPtrReturn(pSvcCbData, VERR_INVALID_POINTER);
456
457	LogFlowThisFuncEnter();
458
459	if (pSvcCbData->mParms < 3)
460	return VERR_INVALID_PARAMETER;
461
462	int idx = 1; /* Current parameter index. */
463	CALLBACKDATA_DIR_NOTIFY dataCb;
464	RT_ZERO(dataCb);
465	/* pSvcCb->mpaParms[0] always contains the context ID. */
466	HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.uType);
467	HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.rc);
468
469	int const vrcGuest = (int)dataCb.rc; /* uint32_t vs. int. */
470
471	LogFlowThisFunc(("uType=%RU32, vrcGuest=%Rrc\n", dataCb.uType, vrcGuest));
472
473	if (RT_FAILURE(vrcGuest))
474	{
475	/** @todo Set status? */
476
477	/* Ignore return code, as the event to signal might not be there (anymore). */
478	signalWaitEventInternal(pCbCtx, vrcGuest, NULL /* pPayload */);
479	return VINF_SUCCESS; /* Report to the guest. */
480	}
481
482	int vrc = VERR_NOT_SUPPORTED; /* Play safe by default. */
483
484	ComObjPtr<VirtualBoxErrorInfo> errorInfo;
485	HRESULT hrc = errorInfo.createObject();
486	ComAssertComRCRet(hrc, VERR_COM_UNEXPECTED);
487	if (RT_FAILURE(vrcGuest))
488	{
489	hrc = errorInfo->initEx(VBOX_E_GSTCTL_GUEST_ERROR, vrcGuest,
490	COM_IIDOF(IGuestDirectory), getComponentName(),
491	i_guestErrorToString(vrcGuest, mData.mOpenInfo.mPath.c_str()));
492	ComAssertComRCRet(hrc, VERR_COM_UNEXPECTED);
493	}
494
495	switch (dataCb.uType)
496	{
497	case GUEST_DIR_NOTIFYTYPE_ERROR:
498	{
499	vrc = i_setStatus(DirectoryStatus_Error, vrcGuest);
500	break;
501	}
502
503	case GUEST_DIR_NOTIFYTYPE_OPEN:
504	{
505	AssertBreakStmt(pSvcCbData->mParms >= 4, vrc = VERR_INVALID_PARAMETER);
506	vrc = HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.u.open.uHandle /* Guest native file handle */);
507	AssertRCBreak(vrc);
508	vrc = i_setStatus(DirectoryStatus_Open, vrcGuest);
509	break;
510	}
511
512	case GUEST_DIR_NOTIFYTYPE_CLOSE:
513	{
514	vrc = i_setStatus(DirectoryStatus_Close, vrcGuest);
515	break;
516	}
517
518	case GUEST_DIR_NOTIFYTYPE_READ:
519	{
520	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mParms == 6, ("mParms=%u\n", pSvcCbData->mParms),
521	vrc = VERR_WRONG_PARAMETER_COUNT);
522	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx].type == VBOX_HGCM_SVC_PARM_PTR,
523	("type=%u\n", pSvcCbData->mpaParms[idx].type),
524	vrc = VERR_WRONG_PARAMETER_TYPE);
525	PGSTCTLDIRENTRYEX pDirEntryEx;
526	uint32_t cbDirEntryEx;
527	vrc = HGCMSvcGetPv(&pSvcCbData->mpaParms[idx++], (void **)&pDirEntryEx, &cbDirEntryEx);
528	AssertRCBreak(vrc);
529	AssertBreakStmt( cbDirEntryEx >= RT_UOFFSETOF(GSTCTLDIRENTRYEX, szName[2])
530	&& cbDirEntryEx <= GSTCTL_DIRENTRY_MAX_SIZE, vrc = VERR_INVALID_PARAMETER);
531	dataCb.u.read.Entry.pDirEntryEx = (PGSTCTLDIRENTRYEX)RTMemDup(pDirEntryEx, cbDirEntryEx);
532	AssertPtrBreakStmt(dataCb.u.read.Entry.pDirEntryEx, vrc = VERR_NO_MEMORY);
533	dataCb.u.read.Entry.cbDirEntryEx = cbDirEntryEx;
534
535	char *pszUser;
536	uint32_t cbUser;
537	vrc = HGCMSvcGetStr(&pSvcCbData->mpaParms[idx++], &pszUser, &cbUser);
538	AssertRCBreak(vrc);
539	AssertBreakStmt(cbUser <= GSTCTL_DIRENTRY_MAX_USER_NAME, vrc = VERR_TOO_MUCH_DATA);
540	dataCb.u.read.Entry.pszUser = RTStrDup(pszUser);
541	AssertPtrBreakStmt(dataCb.u.read.Entry.pszUser, vrc = VERR_NO_MEMORY);
542	dataCb.u.read.Entry.cbUser = cbUser;
543
544	char *pszGroups;
545	uint32_t cbGroups;
546	vrc = HGCMSvcGetStr(&pSvcCbData->mpaParms[idx++], &pszGroups, &cbGroups);
547	AssertRCBreak(vrc);
548	AssertBreakStmt(cbGroups <= GSTCTL_DIRENTRY_MAX_USER_GROUPS, vrc = VERR_TOO_MUCH_DATA);
549	dataCb.u.read.Entry.pszGroups = RTStrDup(pszGroups);
550	AssertPtrBreakStmt(dataCb.u.read.Entry.pszGroups, vrc = VERR_NO_MEMORY);
551	dataCb.u.read.Entry.cbGroups = cbGroups;
552
553	/** @todo ACLs not implemented yet. */
554
555	GuestFsObjData fsObjData(dataCb.u.read.Entry.pDirEntryEx->szName);
556	vrc = fsObjData.FromGuestFsObjInfo(&dataCb.u.read.Entry.pDirEntryEx->Info);
557	AssertRCBreak(vrc);
558	ComObjPtr<GuestFsObjInfo> ptrFsObjInfo;
559	hrc = ptrFsObjInfo.createObject();
560	ComAssertComRCBreak(hrc, vrc = VERR_COM_UNEXPECTED);
561	vrc = ptrFsObjInfo->init(fsObjData);
562	AssertRCBreak(vrc);
563
564	::FireGuestDirectoryReadEvent(mEventSource, mSession, this,
565	dataCb.u.read.Entry.pDirEntryEx->szName, ptrFsObjInfo,
566	dataCb.u.read.Entry.pszUser, dataCb.u.read.Entry.pszGroups);
567	break;
568	}
569
570	case GUEST_DIR_NOTIFYTYPE_REWIND:
571	{
572	/* Note: This does not change the overall status of the directory (i.e. open). */
573	::FireGuestDirectoryStateChangedEvent(mEventSource, mSession, this, DirectoryStatus_Rewind, errorInfo);
574	break;
575	}
576
577	case GUEST_DIR_NOTIFYTYPE_LIST:
578	{
579	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mParms >= 4, ("mParms=%u\n", pSvcCbData->mParms),
580	vrc = VERR_WRONG_PARAMETER_COUNT);
581	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx].type == VBOX_HGCM_SVC_PARM_32BIT,
582	("type=%u\n", pSvcCbData->mpaParms[idx].type),
583	vrc = VERR_WRONG_PARAMETER_TYPE);
584
585	vrc = HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.u.list.cEntries);
586	AssertRCBreak(vrc);
587	/* We limit this for now to 64K entries max per call.
588	* The guest does not do this check, so we could de/increase this limit in the future. */
589	AssertBreakStmt(dataCb.u.list.cEntries <= _64K, vrc = VERR_TOO_MUCH_DATA);
590
591	if (!dataCb.u.list.cEntries) /* No entries sent? Bail out early. */
592	break;
593
594	/*
595	* Fetch buffer with packed directory entries.
596	*/
597	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mParms == 5, ("mParms=%u\n", pSvcCbData->mParms),
598	vrc = VERR_WRONG_PARAMETER_COUNT);
599	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx].type == VBOX_HGCM_SVC_PARM_PTR,
600	("type=%u\n", pSvcCbData->mpaParms[idx].type),
601	vrc = VERR_WRONG_PARAMETER_TYPE);
602	void *pvBuf;
603	uint32_t cbBuf;
604	vrc = HGCMSvcGetPv(&pSvcCbData->mpaParms[idx], &pvBuf, &cbBuf);
605	AssertRCBreak(vrc);
606	AssertBreakStmt(cbBuf >= sizeof(GSTCTLDIRENTRYEX), vrc = VERR_INVALID_PARAMETER);
607	dataCb.u.list.paEntries = (PCALLBACKDATA_DIR_ENTRY )RTMemAllocZ(dataCb.u.list.cEntries sizeof(PCALLBACKDATA_DIR_ENTRY));
608	AssertPtrBreakStmt(dataCb.u.list.paEntries, vrc = VERR_NO_MEMORY);
609
610	/*
611	* Unpack directory entries.
612	*/
613	size_t offBuf = 0;
614	for (uint32_t i = 0; i < dataCb.u.list.cEntries; i++)
615	{
616	dataCb.u.list.paEntries[i] = (PCALLBACKDATA_DIR_ENTRY)RTMemAlloc(sizeof(CALLBACKDATA_DIR_ENTRY));
617	AssertPtrBreakStmt(dataCb.u.list.paEntries[i], vrc = VERR_NO_MEMORY);
618
619	PCALLBACKDATA_DIR_ENTRY pEntry = dataCb.u.list.paEntries[i];
620
621	PGSTCTLDIRENTRYLISTHDR const pHdr = (PGSTCTLDIRENTRYLISTHDR)((uint8_t *)pvBuf + offBuf);
622	AssertBreakStmt(pHdr->cbDirEntryEx <= GSTCTL_DIRENTRY_MAX_SIZE, vrc = VERR_TOO_MUCH_DATA);
623	AssertBreakStmt(pHdr->cbUser <= GSTCTL_DIRENTRY_MAX_USER_NAME, vrc = VERR_TOO_MUCH_DATA);
624	AssertBreakStmt(pHdr->cbGroups <= GSTCTL_DIRENTRY_MAX_USER_GROUPS, vrc = VERR_TOO_MUCH_DATA);
625	offBuf += sizeof(GSTCTLDIRENTRYLISTHDR);
626
627	AssertBreakStmt( pHdr->cbDirEntryEx >= RT_UOFFSETOF(GSTCTLDIRENTRYEX, szName[2])
628	&& pHdr->cbDirEntryEx <= GSTCTL_DIRENTRY_MAX_SIZE, vrc = VERR_INVALID_PARAMETER);
629	pEntry->pDirEntryEx = (PGSTCTLDIRENTRYEX)RTMemDup((uint8_t *)pvBuf + offBuf, pHdr->cbDirEntryEx);
630	AssertPtrBreakStmt(pEntry->pDirEntryEx, vrc = VERR_NO_MEMORY);
631	pEntry->cbDirEntryEx = pHdr->cbDirEntryEx;
632	offBuf += pHdr->cbDirEntryEx;
633
634	if (pHdr->cbUser)
635	{
636	pEntry->pszUser = (char )RTMemDup((uint8_t )pvBuf + offBuf, pHdr->cbUser);
637	AssertPtrBreakStmt(pEntry->pszUser, vrc = VERR_NO_MEMORY);
638	pEntry->cbUser = pHdr->cbUser;
639	offBuf += pHdr->cbUser;
640	}
641
642	if (pHdr->cbGroups)
643	{
644	pEntry->pszGroups = (char )RTMemDup((uint8_t )pvBuf + offBuf, pHdr->cbGroups);
645	AssertPtrBreakStmt(pEntry->pszGroups, vrc = VERR_NO_MEMORY);
646	pEntry->cbGroups = pHdr->cbGroups;
647	offBuf += pHdr->cbGroups;
648	}
649
650	#ifdef DEBUG
651	GuestFsObjData obj;
652	AssertRC(obj.FromGuestFsObjInfo(&pEntry->pDirEntryEx->Info, pEntry->pszUser, pEntry->pszGroups));
653	AssertRC(RTStrValidateEncodingEx(pEntry->pszUser, pHdr->cbUser, RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED));
654	AssertRC(RTStrValidateEncodingEx(pEntry->pszGroups, pHdr->cbGroups, RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED));
655	#endif
656	}
657
658	if (RT_SUCCESS(vrc))
659	{
660	Assert(offBuf == cbBuf);
661	}
662	else /* Roll back on error. */
663	{
664	GuestDirectory::i_dirNotifyDataDestroy(&dataCb);
665	}
666	break;
667	}
668
669	default:
670	AssertFailed();
671	break;
672	}
673
674	try
675	{
676	if (RT_SUCCESS(vrc))
677	{
678	GuestWaitEventPayload payload(dataCb.uType, &dataCb, sizeof(dataCb));
679
680	/* Ignore return code, as the event to signal might not be there (anymore). */
681	signalWaitEventInternal(pCbCtx, vrcGuest, &payload);
682	}
683	else /* OOM situation, wrong HGCM parameters or smth. not expected. */
684	{
685	/* Ignore return code, as the event to signal might not be there (anymore). */
686	signalWaitEventInternalEx(pCbCtx, vrc, 0 /* guestRc /, NULL / pPayload */);
687	}
688	}
689	catch (int vrcEx) /* Thrown by GuestWaitEventPayload constructor. */
690	{
691	/* Also try to signal the waiter, to let it know of the OOM situation.
692	* Ignore return code, as the event to signal might not be there (anymore). */
693	signalWaitEventInternalEx(pCbCtx, vrcEx, 0 /* guestRc /, NULL / pPayload */);
694	vrc = vrcEx;
695	}
696
697	LogFlowThisFunc(("uType=%RU32, rcGuest=%Rrc, vrc=%Rrc\n", dataCb.uType, vrcGuest, vrc));
698	return vrc;
699	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
700	}
701
702	/**
703	* Static helper function to convert a given guest directory error to a string.
704	*
705	* @returns Error string.
706	* @param vrcGuest Guest directory error to return string for.
707	* @param pcszWhat Hint of what was involved when the error occurred.
708	*/
709	/* static */
710	Utf8Str GuestDirectory::i_guestErrorToString(int vrcGuest, const char *pcszWhat)
711	{
712	AssertPtrReturn(pcszWhat, "");
713
714	#define CASE_MSG(a_iRc, ...) \
715	case a_iRc: strErr.printf(__VA_ARGS__); break;
716
717	Utf8Str strErr;
718	switch (vrcGuest)
719	{
720	CASE_MSG(VERR_ACCESS_DENIED, tr("Access to guest directory \"%s\" is denied"), pcszWhat);
721	CASE_MSG(VERR_ALREADY_EXISTS, tr("Guest directory \"%s\" already exists"), pcszWhat);
722	CASE_MSG(VERR_CANT_CREATE, tr("Guest directory \"%s\" cannot be created"), pcszWhat);
723	CASE_MSG(VERR_DIR_NOT_EMPTY, tr("Guest directory \"%s\" is not empty"), pcszWhat);
724	CASE_MSG(VERR_NO_MORE_FILES, tr("Guest directory \"%s\" has no more entries"), pcszWhat);
725	CASE_MSG(VERR_PATH_NOT_FOUND, tr("Path of guest directory \"%s\" not found"), pcszWhat);
726	default:
727	strErr.printf(tr("Error %Rrc for guest directory \"%s\" occurred\n"), vrcGuest, pcszWhat);
728	break;
729	}
730
731	#undef CASE_MSG
732
733	return strErr;
734	}
735
736	/**
737	* Static helper function to destroy direction notification callback data.
738	*
739	* @param pDirNotify Pointer to direction notification callback data to destroy.
740	*/
741	/* static */
742	void GuestDirectory::i_dirNotifyDataDestroy(PCALLBACKDATA_DIR_NOTIFY pDirNotify)
743	{
744	if (!pDirNotify)
745	return;
746
747	switch (pDirNotify->uType)
748	{
749	case GUEST_DIR_NOTIFYTYPE_LIST:
750	{
751	for (uint32_t i = 0; i < pDirNotify->u.list.cEntries; i++)
752	{
753	PCALLBACKDATA_DIR_ENTRY const pEntry = pDirNotify->u.list.paEntries[i];
754	AssertPtrBreak(pEntry);
755	RTStrFree(pEntry->pszUser);
756	RTStrFree(pEntry->pszGroups);
757	RTMemFree(pEntry->pDirEntryEx);
758	RTMemFree(pEntry);
759	}
760	RTMemFree(pDirNotify->u.list.paEntries);
761	pDirNotify->u.list.paEntries = NULL;
762	pDirNotify->u.list.cEntries = 0;
763	break;
764	}
765
766	default:
767	break;
768	}
769	}
770
771	/**
772	* @copydoc GuestObject::i_onUnregister
773	*/
774	int GuestDirectory::i_onUnregister(void)
775	{
776	LogFlowThisFuncEnter();
777
778	int vrc = VINF_SUCCESS;
779
780	LogFlowFuncLeaveRC(vrc);
781	return vrc;
782	}
783
784	/**
785	* @copydoc GuestObject::i_onSessionStatusChange
786	*/
787	int GuestDirectory::i_onSessionStatusChange(GuestSessionStatus_T enmSessionStatus)
788	{
789	RT_NOREF(enmSessionStatus);
790
791	LogFlowThisFuncEnter();
792
793	int vrc = VINF_SUCCESS;
794
795	LogFlowFuncLeaveRC(vrc);
796	return vrc;
797	}
798
799	/**
800	* Closes this guest directory and removes it from the
801	* guest session's directory list.
802	*
803	* @return VBox status code.
804	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
805	*/
806	int GuestDirectory::i_close(int *pvrcGuest)
807	{
808	int vrc;
809	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
810	if (mSession->i_getParent()->i_getGuestControlFeatures0() & VBOX_GUESTCTRL_GF_0_TOOLBOX_AS_CMDS)
811	{
812	GuestWaitEvent *pEvent = NULL;
813	GuestEventTypes eventTypes;
814	try
815	{
816	eventTypes.push_back(VBoxEventType_OnGuestDirectoryStateChanged);
817
818	vrc = registerWaitEvent(eventTypes, &pEvent);
819	}
820	catch (std::bad_alloc &)
821	{
822	vrc = VERR_NO_MEMORY;
823	}
824
825	if (RT_FAILURE(vrc))
826	return vrc;
827
828	/* Prepare HGCM call. */
829	VBOXHGCMSVCPARM paParms[2];
830	int i = 0;
831	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
832	HGCMSvcSetU32(&paParms[i++], mObjectID /* Guest directory handle */);
833
834	vrc = sendMessage(HOST_MSG_DIR_CLOSE, i, paParms);
835	if (RT_SUCCESS(vrc))
836	{
837	vrc = pEvent->Wait(30 * 1000);
838	if (RT_SUCCESS(vrc))
839	{
840	// Nothing to do here.
841	}
842	else if (pEvent->HasGuestError() && pvrcGuest)
843	*pvrcGuest = pEvent->GuestResult();
844	}
845	}
846	else
847	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
848	{
849	vrc = i_closeViaToolbox(pvrcGuest);
850	}
851
852	AssertPtr(mSession);
853	int vrc2 = mSession->i_directoryUnregister(this);
854	if (RT_SUCCESS(vrc))
855	vrc = vrc2;
856
857	LogFlowThisFunc(("Returning vrc=%Rrc\n", vrc));
858	return vrc;
859	}
860
861	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
862	/**
863	* Closes this guest directory and removes it from the guest session's directory list (legacy version).
864	*
865	* @return VBox status code.
866	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
867	*
868	* @note This uses an own guest process via the built-in toolbox in VBoxSerivce.
869	*/
870	int GuestDirectory::i_closeViaToolbox(int *pvrcGuest)
871	{
872	return mData.mProcessTool.terminate(30 * 1000 /* 30s timeout */, pvrcGuest);
873	}
874	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
875
876	/**
877	* Reads the next directory entry, internal version.
878	*
879	* @return VBox status code.
880	* @retval VERR_GSTCTL_GUEST_ERROR / VERR_NO_MORE_FILES if no more entries are available.
881	* @param objData Where to store the read directory entry as internal object data.
882	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
883	*/
884	int GuestDirectory::i_readInternal(GuestFsObjData &objData, int *pvrcGuest)
885	{
886	AssertPtrReturn(pvrcGuest, VERR_INVALID_POINTER);
887
888	int vrc;
889
890	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
891	if (mSession->i_getParent()->i_getGuestControlFeatures0() & VBOX_GUESTCTRL_GF_0_TOOLBOX_AS_CMDS)
892	{
893	GuestWaitEvent *pEvent = NULL;
894	GuestEventTypes eventTypes;
895	try
896	{
897	vrc = registerWaitEvent(eventTypes, &pEvent);
898	}
899	catch (std::bad_alloc &)
900	{
901	vrc = VERR_NO_MEMORY;
902	}
903
904	if (RT_FAILURE(vrc))
905	return vrc;
906
907	/* Prepare HGCM call. */
908	VBOXHGCMSVCPARM paParms[4];
909	int i = 0;
910	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
911	HGCMSvcSetU32(&paParms[i++], mObjectID /* Guest directory handle */);
912
913	vrc = sendMessage(HOST_MSG_DIR_READ, i, paParms);
914	if (RT_SUCCESS(vrc))
915	{
916	vrc = pEvent->Wait(30 * 1000);
917	if (RT_SUCCESS(vrc))
918	{
919	PCALLBACKDATA_DIR_NOTIFY const pDirNotify = (PCALLBACKDATA_DIR_NOTIFY)pEvent->Payload().Raw();
920	AssertPtrReturn(pDirNotify, VERR_INVALID_POINTER);
921	int vrcGuest = (int)pDirNotify->rc;
922	if (RT_SUCCESS(vrcGuest))
923	{
924	AssertReturn(pDirNotify->uType == GUEST_DIR_NOTIFYTYPE_READ, VERR_INVALID_PARAMETER);
925	AssertPtrReturn(pDirNotify->u.read.Entry.pDirEntryEx, VERR_INVALID_POINTER);
926	objData.Init(pDirNotify->u.read.Entry.pDirEntryEx->szName);
927	vrc = objData.FromGuestFsObjInfo(&pDirNotify->u.read.Entry.pDirEntryEx->Info,
928	pDirNotify->u.read.Entry.pszUser, pDirNotify->u.read.Entry.pszGroups);
929	RTMemFree(pDirNotify->u.read.Entry.pDirEntryEx);
930	RTStrFree(pDirNotify->u.read.Entry.pszUser);
931	RTStrFree(pDirNotify->u.read.Entry.pszGroups);
932	}
933	else
934	{
935	*pvrcGuest = vrcGuest;
936	vrc = VERR_GSTCTL_GUEST_ERROR;
937	}
938	}
939	else if (pEvent->HasGuestError() && pvrcGuest)
940	*pvrcGuest = pEvent->GuestResult();
941	}
942	}
943	else
944	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
945	{
946	vrc = i_readInternalViaToolbox(objData, pvrcGuest);
947	}
948
949	LogFlowThisFunc(("Returning vrc=%Rrc\n", vrc));
950	return vrc;
951	}
952
953	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
954	/**
955	* Reads the next directory entry, internal version (legacy version).
956	*
957	* @return VBox status code. Will return VERR_NO_MORE_FILES if no more entries are available.
958	* @param objData Where to store the read directory entry as internal object data.
959	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
960	*
961	* @note This uses an own guest process via the built-in toolbox in VBoxSerivce.
962	*/
963	int GuestDirectory::i_readInternalViaToolbox(GuestFsObjData &objData, int *pvrcGuest)
964	{
965	GuestToolboxStreamBlock curBlock;
966	int vrc = mData.mProcessTool.waitEx(GUESTPROCESSTOOL_WAIT_FLAG_STDOUT_BLOCK, &curBlock, pvrcGuest);
967	if (RT_SUCCESS(vrc))
968	{
969	/*
970	* Note: The guest process can still be around to serve the next
971	* upcoming stream block next time.
972	*/
973	if (!mData.mProcessTool.isRunning())
974	vrc = mData.mProcessTool.getTerminationStatus(); /* Tool process is not running (anymore). Check termination status. */
975
976	if (RT_SUCCESS(vrc))
977	{
978	if (curBlock.GetCount()) /* Did we get content? */
979	{
980	if (curBlock.GetString("name"))
981	{
982	vrc = objData.FromToolboxLs(curBlock, true /* fLong */);
983	}
984	else
985	{
986	#ifdef DEBUG
987	curBlock.DumpToLog();
988	#endif
989	vrc = VERR_PATH_NOT_FOUND;
990	}
991	}
992	else
993	{
994	/* Nothing to read anymore. Tell the caller. */
995	vrc = VERR_NO_MORE_FILES;
996	}
997	}
998	}
999
1000	return vrc;
1001	}
1002	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1003
1004	/**
1005	* Worker for listing the next directory entries.
1006	*
1007	* @return VBox status code.
1008	* @retval VERR_GSTCTL_GUEST_ERROR / VERR_NO_MORE_FILES if no more entries are available after this iteration.
1009	* \a vecObjData will contain the rest of the entries then (if any).
1010	* @retval VERR_NOT_SUPPORTED if the installed Guest Additions do not support this method.
1011	* @param cMaxEntries How many directory entries to read at max.
1012	* @param fFlags Flags of type GSTCTL_DIRLIST_F_XXX.
1013	* @param vecObjData Where to store the read directory entries on success.
1014	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
1015	*/
1016	int GuestDirectory::i_listInternal(uint32_t cMaxEntries, uint32_t fFlags, std::vector<GuestFsObjData> &vecObjData, int *pvrcGuest)
1017	{
1018	int vrc;
1019
1020	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
1021	if (mSession->i_getParent()->i_getGuestControlFeatures0() & VBOX_GUESTCTRL_GF_0_TOOLBOX_AS_CMDS)
1022	{
1023	GuestWaitEvent *pEvent = NULL;
1024	GuestEventTypes eventTypes;
1025	try
1026	{
1027	vrc = registerWaitEvent(eventTypes, &pEvent);
1028	}
1029	catch (std::bad_alloc &)
1030	{
1031	vrc = VERR_NO_MEMORY;
1032	}
1033
1034	if (RT_FAILURE(vrc))
1035	return vrc;
1036
1037	/* Prepare HGCM call. */
1038	VBOXHGCMSVCPARM paParms[4];
1039	int i = 0;
1040	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
1041	HGCMSvcSetU32(&paParms[i++], mObjectID /* Directory handle */);
1042	HGCMSvcSetU32(&paParms[i++], cMaxEntries);
1043	HGCMSvcSetU32(&paParms[i++], 0 /* Flags */);
1044
1045	vrc = sendMessage(HOST_MSG_DIR_LIST, i, paParms);
1046	if (RT_SUCCESS(vrc))
1047	{
1048	vrc = pEvent->Wait(30 * 1000);
1049	if (RT_SUCCESS(vrc))
1050	{
1051	PCALLBACKDATA_DIR_NOTIFY const pDirNotify = (PCALLBACKDATA_DIR_NOTIFY)pEvent->Payload().Raw();
1052	AssertPtrReturn(pDirNotify, VERR_INVALID_POINTER);
1053	int vrcGuest = (int)pDirNotify->rc;
1054	if ( RT_SUCCESS(vrcGuest)
1055	/* Guest indicates that there are no more entries to read.
1056	* We still need to check if we have read something with this iteration though. */
1057	\|\| vrcGuest == VERR_NO_MORE_FILES)
1058	{
1059	AssertReturn(pDirNotify->uType == GUEST_DIR_NOTIFYTYPE_LIST, VERR_INVALID_PARAMETER);
1060
1061	try
1062	{
1063	vecObjData.resize(pDirNotify->u.list.cEntries);
1064	}
1065	catch (std::bad_alloc &)
1066	{
1067	vrc = VERR_NO_MEMORY;
1068	}
1069
1070	if (RT_SUCCESS(vrc))
1071	{
1072	for (size_t a = 0; a < pDirNotify->u.list.cEntries; a++)
1073	{
1074	PCALLBACKDATA_DIR_ENTRY const pEntry = pDirNotify->u.list.paEntries[a];
1075	AssertPtr(pEntry);
1076
1077	AssertPtr(pEntry->pDirEntryEx);
1078	vecObjData[a].Init(pEntry->pDirEntryEx->szName);
1079	int vrc2 = vecObjData[a].FromGuestFsObjInfo(&pEntry->pDirEntryEx->Info, pEntry->pszUser, pEntry->pszGroups);
1080	if (RT_SUCCESS(vrc))
1081	vrc = vrc2;
1082	}
1083	}
1084	}
1085	else
1086	{
1087	*pvrcGuest = vrcGuest;
1088	vrc = VERR_GSTCTL_GUEST_ERROR;
1089	}
1090
1091	GuestDirectory::i_dirNotifyDataDestroy(pDirNotify);
1092	}
1093	else if (pEvent->HasGuestError())
1094	*pvrcGuest = pEvent->GuestResult();
1095	}
1096	}
1097	else
1098	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
1099	{
1100	RT_NOREF(cMaxEntries, fFlags, vecObjData, pvrcGuest);
1101	vrc = VERR_NOT_SUPPORTED;
1102	}
1103
1104	return vrc;
1105	}
1106
1107	/**
1108	* Lists the next directory entries.
1109	*
1110	* @return VBox status code.
1111	* @retval VERR_GSTCTL_GUEST_ERROR / VERR_NO_MORE_FILES if no more entries are available after this iteration.
1112	* \a vecObjData will contain the rest of the entries then (if any).
1113	* @retval VERR_NOT_SUPPORTED if the installed Guest Additions do not support this method.
1114	* @param cMaxEntries How many directory entries to read at max.
1115	* @param fFlags Flags of type GSTCTL_DIRLIST_F_XXX.
1116	* @param vecObjInfo Where to store the read directory entries on success.
1117	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
1118	*/
1119	int GuestDirectory::i_listEx(uint32_t cMaxEntries, uint32_t fFlags, std::vector<ComObjPtr<GuestFsObjInfo>> &vecObjInfo,
1120	int *pvrcGuest)
1121	{
1122	AssertPtrReturn(pvrcGuest, VERR_INVALID_POINTER);
1123	AssertReturn(!(fFlags & ~GSTCTL_DIRLIST_F_VALID_MASK), VERR_INVALID_PARAMETER);
1124
1125	std::vector<GuestFsObjData> vecObjDataInt;
1126	int vrc = i_listInternal(cMaxEntries, fFlags, vecObjDataInt, pvrcGuest);
1127	if ( RT_SUCCESS(vrc)
1128	\|\| ( vrc == VERR_GSTCTL_GUEST_ERROR
1129	&& *pvrcGuest == VERR_NO_MORE_FILES))
1130	{
1131	try
1132	{
1133	vecObjInfo.resize(vecObjDataInt.size());
1134	for (size_t i = 0; i < vecObjDataInt.size(); i++)
1135	{
1136	HRESULT hrc = vecObjInfo[i].createObject();
1137	ComAssertComRCBreak(hrc, vrc = VERR_COM_UNEXPECTED);
1138
1139	vrc = vecObjInfo[i]->init(vecObjDataInt[i]);
1140	if (RT_FAILURE(vrc))
1141	break;
1142	}
1143	}
1144	catch (std::bad_alloc &)
1145	{
1146	vrc = VERR_NO_MEMORY;
1147	}
1148	}
1149
1150	return vrc;
1151	}
1152
1153	/**
1154	* Lists the next directory entries.
1155	*
1156	* @return VBox status code.
1157	* @retval VERR_GSTCTL_GUEST_ERROR / VERR_NO_MORE_FILES if no more entries are available after this iteration.
1158	* \a vecObjData will contain the rest of the entries then (if any).
1159	* @retval VERR_NOT_SUPPORTED if the installed Guest Additions do not support this method.
1160	* @param cMaxEntries How many directory entries to read at max.
1161	* @param vecObjInfo Where to store the read directory entries on success.
1162	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
1163	*/
1164	int GuestDirectory::i_list(uint32_t cMaxEntries, std::vector<ComObjPtr<GuestFsObjInfo>> &vecObjInfo, int *pvrcGuest)
1165	{
1166	return i_listEx(cMaxEntries, GSTCTL_DIRLIST_F_NONE, vecObjInfo, pvrcGuest);
1167	}
1168
1169	/**
1170	* Reads the next directory entry.
1171	*
1172	* @return VBox status code.
1173	* @retval VERR_GSTCTL_GUEST_ERROR / VERR_NO_MORE_FILES if no more entries are available.
1174	* @param fsObjInfo Where to store the read directory entry.
1175	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
1176	*/
1177	int GuestDirectory::i_read(ComObjPtr<GuestFsObjInfo> &fsObjInfo, int *pvrcGuest)
1178	{
1179	AssertPtrReturn(pvrcGuest, VERR_INVALID_POINTER);
1180
1181	/* Create the FS info object. */
1182	HRESULT hr = fsObjInfo.createObject();
1183	if (FAILED(hr))
1184	return VERR_COM_UNEXPECTED;
1185
1186	int vrc;
1187
1188	/* If we have a valid object data cache, read from it. */
1189	if (mData.mObjData.mName.isNotEmpty())
1190	{
1191	vrc = fsObjInfo->init(mData.mObjData);
1192	if (RT_SUCCESS(vrc))
1193	{
1194	mData.mObjData.mName = ""; /* Mark the object data as being empty (beacon). */
1195	}
1196	}
1197	else /* Otherwise ask the guest for the next object data. */
1198	{
1199	GuestFsObjData objData;
1200	vrc = i_readInternal(objData, pvrcGuest);
1201	if (RT_SUCCESS(vrc))
1202	vrc = fsObjInfo->init(objData);
1203	}
1204
1205	LogFlowThisFunc(("Returning vrc=%Rrc\n", vrc));
1206	return vrc;
1207	}
1208
1209	/**
1210	* Rewinds the directory reading.
1211	*
1212	* @returns VBox status code.
1213	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1214	* @param uTimeoutMS Timeout (in ms) to wait.
1215	* @param pvrcGuest Where to store the guest result code in case VERR_GSTCTL_GUEST_ERROR is returned.
1216	*/
1217	int GuestDirectory::i_rewind(uint32_t uTimeoutMS, int *pvrcGuest)
1218	{
1219	RT_NOREF(pvrcGuest);
1220	#ifndef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
1221	RT_NOREF(uTimeoutMS, pvrcGuest);
1222	#else
1223	/* Only available for Guest Additions 7.1+. */
1224	if (mSession->i_getParent()->i_getGuestControlFeatures0() & VBOX_GUESTCTRL_GF_0_TOOLBOX_AS_CMDS)
1225	{
1226	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
1227
1228	int vrc;
1229
1230	GuestWaitEvent *pEvent = NULL;
1231	GuestEventTypes eventTypes;
1232	try
1233	{
1234	eventTypes.push_back(VBoxEventType_OnGuestDirectoryStateChanged);
1235	vrc = registerWaitEvent(eventTypes, &pEvent);
1236	}
1237	catch (std::bad_alloc &)
1238	{
1239	vrc = VERR_NO_MEMORY;
1240	}
1241
1242	if (RT_FAILURE(vrc))
1243	return vrc;
1244
1245	/* Prepare HGCM call. */
1246	VBOXHGCMSVCPARM paParms[4];
1247	int i = 0;
1248	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
1249	HGCMSvcSetU32(&paParms[i++], mObjectID /* Directory handle */);
1250
1251	alock.release(); /* Drop lock before sending. */
1252
1253	vrc = sendMessage(HOST_MSG_DIR_REWIND, i, paParms);
1254	if (RT_SUCCESS(vrc))
1255	{
1256	VBoxEventType_T evtType;
1257	ComPtr<IEvent> pIEvent;
1258	vrc = waitForEvent(pEvent, uTimeoutMS, &evtType, pIEvent.asOutParam());
1259	if (RT_SUCCESS(vrc))
1260	{
1261	if (evtType == VBoxEventType_OnGuestDirectoryStateChanged)
1262	{
1263	ComPtr<IGuestDirectoryStateChangedEvent> pEvt = pIEvent;
1264	Assert(!pEvt.isNull());
1265	}
1266	else
1267	vrc = VWRN_GSTCTL_OBJECTSTATE_CHANGED;
1268	}
1269	else if (pEvent->HasGuestError()) /* Return guest vrc if available. */
1270	vrc = pEvent->GuestResult();
1271	}
1272
1273	unregisterWaitEvent(pEvent);
1274	return vrc;
1275	}
1276	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
1277
1278	return VERR_NOT_SUPPORTED;
1279	}
1280
1281	/**
1282	* Sets the current internal directory object status.
1283	*
1284	* @returns VBox status code.
1285	* @param enmStatus New directory status to set.
1286	* @param vrcDir New result code to set.
1287	*
1288	* @note Takes the write lock.
1289	*/
1290	int GuestDirectory::i_setStatus(DirectoryStatus_T enmStatus, int vrcDir)
1291	{
1292	LogFlowThisFuncEnter();
1293
1294	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
1295
1296	LogFlowThisFunc(("oldStatus=%RU32, newStatus=%RU32, vrcDir=%Rrc\n", mData.mStatus, enmStatus, vrcDir));
1297
1298	#ifdef VBOX_STRICT
1299	if (enmStatus == DirectoryStatus_Error)
1300	AssertMsg(RT_FAILURE(vrcDir), ("Guest vrc must be an error (%Rrc)\n", vrcDir));
1301	else
1302	AssertMsg(RT_SUCCESS(vrcDir), ("Guest vrc must not be an error (%Rrc)\n", vrcDir));
1303	#endif
1304
1305	if (mData.mStatus != enmStatus)
1306	{
1307	mData.mStatus = enmStatus;
1308	mData.mLastError = vrcDir;
1309
1310	ComObjPtr<VirtualBoxErrorInfo> errorInfo;
1311	HRESULT hrc = errorInfo.createObject();
1312	ComAssertComRCRet(hrc, VERR_COM_UNEXPECTED);
1313	if (RT_FAILURE(vrcDir))
1314	{
1315	hrc = errorInfo->initEx(VBOX_E_GSTCTL_GUEST_ERROR, vrcDir,
1316	COM_IIDOF(IGuestDirectory), getComponentName(),
1317	i_guestErrorToString(vrcDir, mData.mOpenInfo.mPath.c_str()));
1318	ComAssertComRCRet(hrc, VERR_COM_UNEXPECTED);
1319	}
1320	/* Note: On vrcDir success, errorInfo is set to S_OK and also sent via the event below. */
1321
1322	alock.release(); /* Release lock before firing off event. */
1323
1324	::FireGuestDirectoryStateChangedEvent(mEventSource, mSession, this, mData.mStatus, errorInfo);
1325	}
1326
1327	return VINF_SUCCESS;
1328	}
1329
1330	/**
1331	* Waits for a guest directory status change.
1332	*
1333	* @note Similar code in GuestFile::i_waitForStatusChange().
1334	*
1335	* @returns VBox status code.
1336	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1337	* @param pEvent Guest wait event to wait for.
1338	* @param uTimeoutMS Timeout (in ms) to wait.
1339	* @param penmStatus Where to return the directoy status on success.
1340	* @param prcGuest Where to return the guest error when VERR_GSTCTL_GUEST_ERROR was returned.
1341	*/
1342	int GuestDirectory::i_waitForStatusChange(GuestWaitEvent *pEvent, uint32_t uTimeoutMS,
1343	DirectoryStatus_T penmStatus, int prcGuest)
1344	{
1345	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
1346	/* penmStatus is optional. */
1347
1348	VBoxEventType_T evtType;
1349	ComPtr<IEvent> pIEvent;
1350	int vrc = waitForEvent(pEvent, uTimeoutMS, &evtType, pIEvent.asOutParam());
1351	if (RT_SUCCESS(vrc))
1352	{
1353	AssertReturn(evtType == VBoxEventType_OnGuestDirectoryStateChanged, VERR_WRONG_TYPE);
1354	ComPtr<IGuestDirectoryStateChangedEvent> pDirectoryEvent = pIEvent;
1355	AssertReturn(!pDirectoryEvent.isNull(), VERR_COM_UNEXPECTED);
1356
1357	HRESULT hr;
1358	if (penmStatus)
1359	{
1360	hr = pDirectoryEvent->COMGETTER(Status)(penmStatus);
1361	ComAssertComRC(hr);
1362	}
1363
1364	ComPtr<IVirtualBoxErrorInfo> errorInfo;
1365	hr = pDirectoryEvent->COMGETTER(Error)(errorInfo.asOutParam());
1366	ComAssertComRC(hr);
1367
1368	LONG lGuestRc;
1369	hr = errorInfo->COMGETTER(ResultDetail)(&lGuestRc);
1370	ComAssertComRC(hr);
1371
1372	LogFlowThisFunc(("resultDetail=%RI32 (%Rrc)\n", lGuestRc, lGuestRc));
1373
1374	if (RT_FAILURE((int)lGuestRc))
1375	vrc = VERR_GSTCTL_GUEST_ERROR;
1376
1377	if (prcGuest)
1378	*prcGuest = (int)lGuestRc;
1379	}
1380	/* waitForEvent may also return VERR_GSTCTL_GUEST_ERROR like we do above, so make prcGuest is set. */
1381	/** @todo Also see todo in GuestFile::i_waitForStatusChange(). */
1382	else if (vrc == VERR_GSTCTL_GUEST_ERROR && prcGuest)
1383	*prcGuest = pEvent->GuestResult();
1384	Assert(vrc != VERR_GSTCTL_GUEST_ERROR \|\| !prcGuest \|\| *prcGuest != (int)0xcccccccc);
1385
1386	return vrc;
1387	}
1388
1389	// implementation of public methods
1390	/////////////////////////////////////////////////////////////////////////////
1391	HRESULT GuestDirectory::close()
1392	{
1393	AutoCaller autoCaller(this);
1394	if (FAILED(autoCaller.hrc())) return autoCaller.hrc();
1395
1396	LogFlowThisFuncEnter();
1397
1398	HRESULT hrc = S_OK;
1399
1400	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1401	int vrc = i_close(&vrcGuest);
1402	if (RT_FAILURE(vrc))
1403	{
1404	switch (vrc)
1405	{
1406	case VERR_GSTCTL_GUEST_ERROR:
1407	{
1408	GuestErrorInfo ge(GuestErrorInfo::Type_Directory, vrcGuest, mData.mOpenInfo.mPath.c_str());
1409	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Closing guest directory failed: %s"),
1410	GuestBase::getErrorAsString(ge).c_str());
1411	break;
1412	}
1413	case VERR_NOT_SUPPORTED:
1414	/* Silently skip old Guest Additions which do not support killing the
1415	* the guest directory handling process. */
1416	break;
1417
1418	default:
1419	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc,
1420	tr("Closing guest directory \"%s\" failed: %Rrc"), mData.mOpenInfo.mPath.c_str(), vrc);
1421	break;
1422	}
1423	}
1424
1425	return hrc;
1426	}
1427
1428	HRESULT GuestDirectory::list(ULONG aMaxEntries, std::vector<ComPtr<IFsObjInfo> > &aObjInfos)
1429	{
1430	AutoCaller autoCaller(this);
1431	if (FAILED(autoCaller.hrc())) return autoCaller.hrc();
1432
1433	LogFlowThisFuncEnter();
1434
1435	HRESULT hrc = S_OK;
1436
1437	std::vector<ComObjPtr<GuestFsObjInfo> > vecObjInfo;
1438	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1439	int vrc = i_list(aMaxEntries, vecObjInfo, &vrcGuest);
1440
1441	/* Don't propagate an error to API callers when this is the last listing (i.e. no more files).
1442	* For subsequent reads the API caller gets an appropriate error then. */
1443	if ( vrc == VERR_GSTCTL_GUEST_ERROR
1444	&& vrcGuest == VERR_NO_MORE_FILES
1445	&& vecObjInfo.size())
1446	vrc = VINF_SUCCESS;
1447
1448	if (RT_SUCCESS(vrc))
1449	{
1450	try
1451	{
1452	aObjInfos.resize(vecObjInfo.size());
1453
1454	for (size_t i = 0; i < vecObjInfo.size(); i++)
1455	{
1456	hrc = vecObjInfo[i].queryInterfaceTo(aObjInfos[i].asOutParam());
1457	ComAssertComRCBreakRC(hrc);
1458	}
1459	}
1460	catch (std::bad_alloc &)
1461	{
1462	hrc = E_OUTOFMEMORY;
1463	}
1464	}
1465	else
1466	{
1467	switch (vrc)
1468	{
1469	case VERR_GSTCTL_GUEST_ERROR:
1470	{
1471	GuestErrorInfo ge(GuestErrorInfo::Type_Directory, vrcGuest, mData.mOpenInfo.mPath.c_str());
1472	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Listing guest directory failed: %s"),
1473	GuestBase::getErrorAsString(ge).c_str());
1474
1475	/* Return a dedicated error code when directory reading is done. See SDK reference. */
1476	if (vrcGuest == VERR_NO_MORE_FILES)
1477	hrc = VBOX_E_OBJECT_NOT_FOUND;
1478	break;
1479	}
1480
1481	case VERR_NOT_SUPPORTED: /* Returned from i_list(). */
1482	hrc = VBOX_E_NOT_SUPPORTED;
1483	break;
1484
1485	default:
1486	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Listing guest directory \"%s\" returned unhandled error: %Rrc\n"),
1487	mData.mOpenInfo.mPath.c_str(), vrc);
1488	break;
1489	}
1490	}
1491
1492	LogFlowThisFunc(("Returning hrc=%Rhrc / vrc=%Rrc\n", hrc, vrc));
1493	return hrc;
1494	}
1495
1496	HRESULT GuestDirectory::read(ComPtr<IFsObjInfo> &aObjInfo)
1497	{
1498	AutoCaller autoCaller(this);
1499	if (FAILED(autoCaller.hrc())) return autoCaller.hrc();
1500
1501	LogFlowThisFuncEnter();
1502
1503	HRESULT hrc = S_OK;
1504
1505	ComObjPtr<GuestFsObjInfo> fsObjInfo;
1506	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1507	int vrc = i_read(fsObjInfo, &vrcGuest);
1508	if (RT_SUCCESS(vrc))
1509	{
1510	/* Return info object to the caller. */
1511	hrc = fsObjInfo.queryInterfaceTo(aObjInfo.asOutParam());
1512	}
1513	else
1514	{
1515	switch (vrc)
1516	{
1517	case VERR_GSTCTL_GUEST_ERROR:
1518	{
1519	GuestErrorInfo ge(
1520	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
1521	GuestErrorInfo::Type_ToolLs
1522	#else
1523	GuestErrorInfo::Type_Directory
1524	#endif
1525	, vrcGuest, mData.mOpenInfo.mPath.c_str());
1526	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Reading guest directory failed: %s"),
1527	GuestBase::getErrorAsString(ge).c_str());
1528
1529	/* Return a dedicated error code when directory reading is done. See SDK reference. */
1530	if (vrcGuest == VERR_NO_MORE_FILES)
1531	hrc = VBOX_E_OBJECT_NOT_FOUND;
1532	break;
1533	}
1534
1535	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
1536	case VERR_GSTCTL_PROCESS_EXIT_CODE:
1537	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Reading guest directory \"%s\" failed: %Rrc"),
1538	mData.mOpenInfo.mPath.c_str(), mData.mProcessTool.getRc());
1539	break;
1540
1541	case VERR_PATH_NOT_FOUND:
1542	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Reading guest directory \"%s\" failed: Path not found"),
1543	mData.mOpenInfo.mPath.c_str());
1544	break;
1545
1546	case VERR_NO_MORE_FILES:
1547	/* See SDK reference. */
1548	hrc = setErrorBoth(VBOX_E_OBJECT_NOT_FOUND, vrc, tr("Reading guest directory \"%s\" failed: No more entries"),
1549	mData.mOpenInfo.mPath.c_str());
1550	break;
1551	#endif
1552	default:
1553	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Reading guest directory \"%s\" returned unhandled error: %Rrc\n"),
1554	mData.mOpenInfo.mPath.c_str(), vrc);
1555	break;
1556	}
1557	}
1558
1559	LogFlowThisFunc(("Returning hrc=%Rhrc / vrc=%Rrc\n", hrc, vrc));
1560	return hrc;
1561	}
1562
1563	HRESULT GuestDirectory::rewind(void)
1564	{
1565	AutoCaller autoCaller(this);
1566	if (FAILED(autoCaller.hrc())) return autoCaller.hrc();
1567
1568	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1569	int vrc = i_rewind(30 * 1000 /* Timeout in ms */, &vrcGuest);
1570	if (RT_SUCCESS(vrc))
1571	return S_OK;
1572
1573	GuestErrorInfo ge(GuestErrorInfo::Type_Directory, vrcGuest, mData.mOpenInfo.mPath.c_str());
1574	return setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Rewinding guest directory failed: %s"),
1575	GuestBase::getErrorAsString(ge).c_str());
1576	}
1577

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source: vbox/trunk/src/VBox/Main/src-client/GuestDirectoryImpl.cpp@ 101054

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