SharedFolderImpl.cpp@ 98103

Last change on this file since 98103 was 98103, checked in by vboxsync, 20 months ago
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1	/* $Id: SharedFolderImpl.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* VirtualBox COM class implementation
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 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_SHAREDFOLDER
29	#include "SharedFolderImpl.h"
30	#if !defined(VBOX_COM_INPROC)
31	# include "VirtualBoxImpl.h"
32	# include "MachineImpl.h"
33	#endif
34	#include "ConsoleImpl.h"
35
36	#include "AutoCaller.h"
37
38	#include <iprt/param.h>
39	#include <iprt/cpp/utils.h>
40	#include <iprt/path.h>
41
42	/////////////////////////////////////////////////////////////////////////////
43	// SharedFolder::Data structure
44	/////////////////////////////////////////////////////////////////////////////
45
46	struct SharedFolder::Data
47	{
48	Data()
49	: fWritable(false),
50	fAutoMount(false)
51	{ }
52
53	const Utf8Str strName;
54	const Utf8Str strHostPath;
55	bool fWritable;
56	bool fAutoMount;
57	const Utf8Str strAutoMountPoint;
58	Utf8Str strLastAccessError;
59	};
60
61	// constructor / destructor
62	/////////////////////////////////////////////////////////////////////////////
63
64	SharedFolder::SharedFolder()
65	: mParent(NULL),
66	#if !defined(VBOX_COM_INPROC)
67	mMachine(NULL),
68	mVirtualBox(NULL)
69	#else
70	mConsole(NULL)
71	#endif
72	{
73	m = new Data;
74	}
75
76	SharedFolder::~SharedFolder()
77	{
78	delete m;
79	m = NULL;
80	}
81
82	HRESULT SharedFolder::FinalConstruct()
83	{
84	return BaseFinalConstruct();
85	}
86
87	void SharedFolder::FinalRelease()
88	{
89	uninit();
90	BaseFinalRelease();
91	}
92
93	// public initializer/uninitializer for internal purposes only
94	/////////////////////////////////////////////////////////////////////////////
95
96	#if !defined(VBOX_COM_INPROC)
97	/**
98	* Initializes the shared folder object.
99	*
100	* This variant initializes a machine instance that lives in the server address space.
101	*
102	* @param aMachine parent Machine object
103	* @param aName logical name of the shared folder
104	* @param aHostPath full path to the shared folder on the host
105	* @param aWritable writable if true, readonly otherwise
106	* @param aAutoMount if auto mounted by guest true, false otherwise
107	* @param aAutoMountPoint Where the guest should try auto mount it.
108	* @param fFailOnError Whether to fail with an error if the shared folder path is bad.
109	*
110	* @return COM result indicator
111	*/
112	HRESULT SharedFolder::init(Machine *aMachine,
113	const Utf8Str &aName,
114	const Utf8Str &aHostPath,
115	bool aWritable,
116	bool aAutoMount,
117	const Utf8Str &aAutoMountPoint,
118	bool fFailOnError)
119	{
120	/* Enclose the state transition NotReady->InInit->Ready */
121	AutoInitSpan autoInitSpan(this);
122	AssertReturn(autoInitSpan.isOk(), E_FAIL);
123
124	unconst(mMachine) = aMachine;
125
126	HRESULT hrc = i_protectedInit(aMachine, aName, aHostPath, aWritable, aAutoMount, aAutoMountPoint, fFailOnError);
127
128	/* Confirm a successful initialization when it's the case */
129	if (SUCCEEDED(hrc))
130	autoInitSpan.setSucceeded();
131
132	return hrc;
133	}
134
135	/**
136	* Initializes the shared folder object given another object
137	* (a kind of copy constructor). This object makes a private copy of data
138	* of the original object passed as an argument.
139	*
140	* @param aMachine parent Machine object
141	* @param aThat shared folder object to copy
142	*
143	* @return COM result indicator
144	*/
145	HRESULT SharedFolder::initCopy(Machine aMachine, SharedFolder aThat)
146	{
147	ComAssertRet(aThat, E_INVALIDARG);
148
149	/* Enclose the state transition NotReady->InInit->Ready */
150	AutoInitSpan autoInitSpan(this);
151	AssertReturn(autoInitSpan.isOk(), E_FAIL);
152
153	unconst(mMachine) = aMachine;
154
155	HRESULT hrc = i_protectedInit(aMachine,
156	aThat->m->strName,
157	aThat->m->strHostPath,
158	aThat->m->fWritable,
159	aThat->m->fAutoMount,
160	aThat->m->strAutoMountPoint,
161	false /* fFailOnError */ );
162
163	/* Confirm a successful initialization when it's the case */
164	if (SUCCEEDED(hrc))
165	autoInitSpan.setSucceeded();
166
167	return hrc;
168	}
169
170	# if 0
171
172	/**
173	* Initializes the shared folder object.
174	*
175	* This variant initializes a global instance that lives in the server address space. It is not presently used.
176	*
177	* @param aVirtualBox VirtualBox parent object
178	* @param aName logical name of the shared folder
179	* @param aHostPath full path to the shared folder on the host
180	* @param aWritable writable if true, readonly otherwise
181	* @param aAutoMountPoint Where the guest should try auto mount it.
182	* @param fFailOnError Whether to fail with an error if the shared folder path is bad.
183	*
184	* @return COM result indicator
185	*/
186	HRESULT SharedFolder::init(VirtualBox *aVirtualBox,
187	const Utf8Str &aName,
188	const Utf8Str &aHostPath,
189	bool aWritable,
190	bool aAutoMount,
191	const Utf8Str &aAutoMountPoint
192	bool fFailOnError)
193	{
194	/* Enclose the state transition NotReady->InInit->Ready */
195	AutoInitSpan autoInitSpan(this);
196	AssertReturn(autoInitSpan.isOk(), E_FAIL);
197
198	unconst(mVirtualBox) = aVirtualBox;
199
200	HRESULT hrc = protectedInit(aVirtualBox, aName, aHostPath, aWritable, aAutoMount, aAutoMountPoint, fFailOnError);
201
202	/* Confirm a successful initialization when it's the case */
203	if (SUCCEEDED(hrc))
204	autoInitSpan.setSucceeded();
205
206	return hrc;
207	}
208
209	# endif
210
211	#else
212
213	/**
214	* Initializes the shared folder object.
215	*
216	* This variant initializes an instance that lives in the console address space.
217	*
218	* @param aConsole Console parent object
219	* @param aName logical name of the shared folder
220	* @param aHostPath full path to the shared folder on the host
221	* @param aWritable writable if true, readonly otherwise
222	* @param aAutoMountPoint Where the guest should try auto mount it.
223	* @param fFailOnError Whether to fail with an error if the shared folder path is bad.
224	*
225	* @return COM result indicator
226	*/
227	HRESULT SharedFolder::init(Console *aConsole,
228	const Utf8Str &aName,
229	const Utf8Str &aHostPath,
230	bool aWritable,
231	bool aAutoMount,
232	const Utf8Str &aAutoMountPoint,
233	bool fFailOnError)
234	{
235	/* Enclose the state transition NotReady->InInit->Ready */
236	AutoInitSpan autoInitSpan(this);
237	AssertReturn(autoInitSpan.isOk(), E_FAIL);
238
239	unconst(mConsole) = aConsole;
240
241	HRESULT hrc = i_protectedInit(aConsole, aName, aHostPath, aWritable, aAutoMount, aAutoMountPoint, fFailOnError);
242
243	/* Confirm a successful initialization when it's the case */
244	if (SUCCEEDED(hrc))
245	autoInitSpan.setSucceeded();
246
247	return hrc;
248	}
249	#endif
250
251	/**
252	* Shared initialization code. Called from the other constructors.
253	*
254	* @note
255	* Must be called from under the object's lock!
256	*/
257	HRESULT SharedFolder::i_protectedInit(VirtualBoxBase *aParent,
258	const Utf8Str &aName,
259	const Utf8Str &aHostPath,
260	bool aWritable,
261	bool aAutoMount,
262	const Utf8Str &aAutoMountPoint,
263	bool fFailOnError)
264	{
265	LogFlowThisFunc(("aName={%s}, aHostPath={%s}, aWritable={%d}, aAutoMount={%d}\n",
266	aName.c_str(), aHostPath.c_str(), aWritable, aAutoMount));
267
268	ComAssertRet(aParent && aName.isNotEmpty() && aHostPath.isNotEmpty(), E_INVALIDARG);
269
270	Utf8Str hostPath = aHostPath;
271	size_t hostPathLen = hostPath.length();
272
273	/* Remove the trailing slash unless it's a root directory
274	* (otherwise the comparison with the RTPathAbs() result will fail at least
275	* on Linux). Note that this isn't really necessary for the shared folder
276	* itself, since adding a mapping eventually results into a
277	* RTDirOpenFiltered() call (see HostServices/SharedFolders) that seems to
278	* accept both the slashified paths and not. */
279	#if defined (RT_OS_OS2) \|\| defined (RT_OS_WINDOWS)
280	if ( hostPathLen > 2
281	&& RTPATH_IS_SEP(hostPath.c_str()[hostPathLen - 1])
282	&& RTPATH_IS_VOLSEP(hostPath.c_str()[hostPathLen - 2]))
283	;
284	#else
285	if (hostPathLen == 1 && RTPATH_IS_SEP(hostPath[0]))
286	;
287	#endif
288	else
289	hostPath.stripTrailingSlash();
290
291	if (fFailOnError)
292	{
293	/* Check whether the path is full (absolute) */
294	char hostPathFull[RTPATH_MAX];
295	int vrc = RTPathAbs(hostPath.c_str(),
296	hostPathFull,
297	sizeof(hostPathFull));
298	if (RT_FAILURE(vrc))
299	return setErrorBoth(E_INVALIDARG, vrc, tr("Invalid shared folder path: '%s' (%Rrc)"), hostPath.c_str(), vrc);
300
301	if (RTPathCompare(hostPath.c_str(), hostPathFull) != 0)
302	return setError(E_INVALIDARG, tr("Shared folder path '%s' is not absolute"), hostPath.c_str());
303
304	RTFSOBJINFO ObjInfo;
305	vrc = RTPathQueryInfoEx(hostPathFull, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK);
306	if (RT_FAILURE(vrc))
307	return setError(E_INVALIDARG, tr("RTPathQueryInfo failed on shared folder path '%s': %Rrc"), hostPathFull, vrc);
308
309	if (!RTFS_IS_DIRECTORY(ObjInfo.Attr.fMode))
310	return setError(E_INVALIDARG, tr("Shared folder path '%s' is not a directory"), hostPathFull);
311	}
312
313	unconst(mParent) = aParent;
314
315	unconst(m->strName) = aName;
316	unconst(m->strHostPath) = hostPath;
317	m->fWritable = aWritable;
318	m->fAutoMount = aAutoMount;
319	unconst(m->strAutoMountPoint) = aAutoMountPoint;
320
321	return S_OK;
322	}
323
324	/**
325	* Uninitializes the instance and sets the ready flag to FALSE.
326	* Called either from FinalRelease() or by the parent when it gets destroyed.
327	*/
328	void SharedFolder::uninit()
329	{
330	LogFlowThisFunc(("\n"));
331
332	/* Enclose the state transition Ready->InUninit->NotReady */
333	AutoUninitSpan autoUninitSpan(this);
334	if (autoUninitSpan.uninitDone())
335	return;
336
337	unconst(mParent) = NULL;
338
339	#if !defined(VBOX_COM_INPROC)
340	unconst(mMachine) = NULL;
341	unconst(mVirtualBox) = NULL;
342	#else
343	unconst(mConsole) = NULL;
344	#endif
345	}
346
347	// wrapped ISharedFolder properties
348	/////////////////////////////////////////////////////////////////////////////
349	HRESULT SharedFolder::getName(com::Utf8Str &aName)
350	{
351	/* mName is constant during life time, no need to lock */
352	aName = m->strName;
353	return S_OK;
354	}
355
356	HRESULT SharedFolder::getHostPath(com::Utf8Str &aHostPath)
357	{
358	/* mHostPath is constant during life time, no need to lock */
359	aHostPath = m->strHostPath;
360	return S_OK;
361	}
362
363	HRESULT SharedFolder::getAccessible(BOOL *aAccessible)
364	{
365	/* mName and mHostPath are constant during life time, no need to lock */
366
367	/* check whether the host path exists */
368	Utf8Str hostPath = m->strHostPath;
369	char hostPathFull[RTPATH_MAX];
370	int vrc = RTPathExists(hostPath.c_str()) ? RTPathReal(hostPath.c_str(),
371	hostPathFull,
372	sizeof(hostPathFull))
373	: VERR_PATH_NOT_FOUND;
374	if (RT_SUCCESS(vrc))
375	{
376	*aAccessible = TRUE;
377	return S_OK;
378	}
379
380	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
381
382	m->strLastAccessError = Utf8StrFmt(tr("'%s' is not accessible (%Rrc)"),
383	m->strHostPath.c_str(),
384	vrc);
385
386	Log1WarningThisFunc(("m.lastAccessError=\"%s\"\n", m->strLastAccessError.c_str()));
387
388	*aAccessible = FALSE;
389
390	return S_OK;
391	}
392
393	HRESULT SharedFolder::getWritable(BOOL *aWritable)
394	{
395	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
396	*aWritable = m->fWritable;
397	return S_OK;
398	}
399
400	HRESULT SharedFolder::setWritable(BOOL aWritable)
401	{
402	RT_NOREF(aWritable);
403	return E_NOTIMPL;
404	}
405
406	HRESULT SharedFolder::getAutoMount(BOOL *aAutoMount)
407	{
408	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
409	*aAutoMount = m->fAutoMount;
410	return S_OK;
411	}
412
413	HRESULT SharedFolder::setAutoMount(BOOL aAutoMount)
414	{
415	RT_NOREF(aAutoMount);
416	return E_NOTIMPL;
417	}
418
419	HRESULT SharedFolder::getAutoMountPoint(com::Utf8Str &aAutoMountPoint)
420	{
421	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
422	aAutoMountPoint = m->strAutoMountPoint;
423	return S_OK;
424	}
425
426	HRESULT SharedFolder::setAutoMountPoint(com::Utf8Str const &aAutoMountPoint)
427	{
428	RT_NOREF(aAutoMountPoint);
429	return E_NOTIMPL;
430	}
431
432	HRESULT SharedFolder::getLastAccessError(com::Utf8Str &aLastAccessError)
433	{
434	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
435	aLastAccessError = m->strLastAccessError;
436	return S_OK;
437	}
438
439
440	const Utf8Str& SharedFolder::i_getName() const
441	{
442	return m->strName;
443	}
444
445	const Utf8Str& SharedFolder::i_getHostPath() const
446	{
447	return m->strHostPath;
448	}
449
450	bool SharedFolder::i_isWritable() const
451	{
452	return m->fWritable;
453	}
454
455	bool SharedFolder::i_isAutoMounted() const
456	{
457	return m->fAutoMount;
458	}
459
460	const Utf8Str &SharedFolder::i_getAutoMountPoint() const
461	{
462	return m->strAutoMountPoint;
463	}
464
465	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-all/SharedFolderImpl.cpp@ 98103

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