vbsfpath.cpp@ 100843

Last change on this file since 100843 was 99802, checked in by vboxsync, 19 months ago
*: Adjustments necessary for dropping -Zc:wchar_t- on windows and instead let the C++ compiler use the native wchar_t type.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 24.4 KB

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1	/* $Id: vbsfpath.cpp 99802 2023-05-16 00:05:16Z vboxsync $ */
2	/** @file
3	* Shared Folders Service - guest/host path convertion and verification.
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
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_SHARED_FOLDERS
33	#ifdef UNITTEST
34	# include "testcase/tstSharedFolderService.h"
35	#endif
36
37	#include "vbsfpath.h"
38	#include "mappings.h"
39	#include "vbsf.h"
40	#include "shflhandle.h"
41
42	#include <iprt/alloc.h>
43	#include <iprt/asm.h>
44	#include <iprt/assert.h>
45	#include <iprt/fs.h>
46	#include <iprt/dir.h>
47	#include <iprt/file.h>
48	#include <iprt/path.h>
49	#include <iprt/string.h>
50	#include <iprt/symlink.h>
51	#include <iprt/uni.h>
52	#include <iprt/stream.h>
53	#ifdef RT_OS_DARWIN
54	# include <Carbon/Carbon.h>
55	#endif
56
57	#ifdef UNITTEST
58	# include "teststubs.h"
59	#endif
60
61
62	/*********************************************************************************************************************************
63	* Defined Constants And Macros *
64	*********************************************************************************************************************************/
65	#define SHFL_RT_LINK(pClient) ((pClient)->fu32Flags & SHFL_CF_SYMLINKS ? RTPATH_F_ON_LINK : RTPATH_F_FOLLOW_LINK)
66
67
68	/**
69	* @todo find a better solution for supporting the execute bit for non-windows
70	* guests on windows host. Search for "0111" to find all the relevant places.
71	*/
72
73	/**
74	* Corrects the casing of the final component
75	*
76	* @returns
77	* @param pClient .
78	* @param pszFullPath .
79	* @param pszStartComponent .
80	*/
81	static int vbsfCorrectCasing(SHFLCLIENTDATA pClient, char pszFullPath, char *pszStartComponent)
82	{
83	Log2(("vbsfCorrectCasing: %s %s\n", pszFullPath, pszStartComponent));
84
85	AssertReturn((uintptr_t)pszFullPath < (uintptr_t)pszStartComponent - 1U, VERR_INTERNAL_ERROR_2);
86	AssertReturn(pszStartComponent[-1] == RTPATH_DELIMITER, VERR_INTERNAL_ERROR_5);
87
88	/*
89	* Allocate a buffer that can hold really long file name entries as well as
90	* the initial search pattern.
91	*/
92	size_t cchComponent = strlen(pszStartComponent);
93	size_t cchParentDir = pszStartComponent - pszFullPath;
94	size_t cchFullPath = cchParentDir + cchComponent;
95	Assert(strlen(pszFullPath) == cchFullPath);
96
97	size_t cbDirEntry = 4096;
98	if (cchFullPath + 4 > cbDirEntry - RT_OFFSETOF(RTDIRENTRYEX, szName))
99	cbDirEntry = RT_OFFSETOF(RTDIRENTRYEX, szName) + cchFullPath + 4;
100
101	PRTDIRENTRYEX pDirEntry = (PRTDIRENTRYEX)RTMemAlloc(cbDirEntry);
102	if (pDirEntry == NULL)
103	return VERR_NO_MEMORY;
104
105	/*
106	* Construct the search criteria in the szName member of pDirEntry.
107	*/
108	/** @todo This is quite inefficient, especially for directories with many
109	* files. If any of the typically case sensitive host systems start
110	* supporting opendir wildcard filters, it would make sense to build
111	* one here with '?' for case foldable charaters. */
112	/** @todo Use RTDirOpen here and drop the whole uncessary path copying? */
113	int rc = RTPathJoinEx(pDirEntry->szName, cbDirEntry - RT_OFFSETOF(RTDIRENTRYEX, szName),
114	pszFullPath, cchParentDir,
115	RT_STR_TUPLE("*"), RTPATH_STR_F_STYLE_HOST);
116	AssertRC(rc);
117	if (RT_SUCCESS(rc))
118	{
119	RTDIR hSearch = NULL;
120	rc = RTDirOpenFiltered(&hSearch, pDirEntry->szName, RTDIRFILTER_WINNT, 0 /fFlags/);
121	if (RT_SUCCESS(rc))
122	{
123	for (;;)
124	{
125	size_t cbDirEntrySize = cbDirEntry;
126
127	rc = RTDirReadEx(hSearch, pDirEntry, &cbDirEntrySize, RTFSOBJATTRADD_NOTHING, SHFL_RT_LINK(pClient));
128	if (rc == VERR_NO_MORE_FILES)
129	break;
130
131	if ( rc != VINF_SUCCESS
132	&& rc != VWRN_NO_DIRENT_INFO)
133	{
134	if ( rc == VERR_NO_TRANSLATION
135	\|\| rc == VERR_INVALID_UTF8_ENCODING)
136	continue;
137	AssertMsgFailed(("%Rrc\n", rc));
138	break;
139	}
140
141	Log2(("vbsfCorrectCasing: found %s\n", &pDirEntry->szName[0]));
142	if ( pDirEntry->cbName == cchComponent
143	&& !RTStrICmp(pszStartComponent, &pDirEntry->szName[0]))
144	{
145	Log(("Found original name %s (%s)\n", &pDirEntry->szName[0], pszStartComponent));
146	strcpy(pszStartComponent, &pDirEntry->szName[0]);
147	rc = VINF_SUCCESS;
148	break;
149	}
150	}
151
152	RTDirClose(hSearch);
153	}
154	}
155
156	if (RT_FAILURE(rc))
157	Log(("vbsfCorrectCasing %s failed with %Rrc\n", pszStartComponent, rc));
158
159	RTMemFree(pDirEntry);
160
161	return rc;
162	}
163
164	/* Temporary stand-in for RTPathExistEx. */
165	static int vbsfQueryExistsEx(const char *pszPath, uint32_t fFlags)
166	{
167	#if 0 /** @todo Fix the symlink issue on windows! */
168	return RTPathExistsEx(pszPath, fFlags);
169	#else
170	RTFSOBJINFO IgnInfo;
171	return RTPathQueryInfoEx(pszPath, &IgnInfo, RTFSOBJATTRADD_NOTHING, fFlags);
172	#endif
173	}
174
175	/**
176	* Helper for vbsfBuildFullPath that performs case corrections on the path
177	* that's being build.
178	*
179	* @returns VINF_SUCCESS at the moment.
180	* @param pClient The client data.
181	* @param pszFullPath Pointer to the full path. This is the path
182	* which may need case corrections. The
183	* corrections will be applied in place.
184	* @param cchFullPath The length of the full path.
185	* @param fWildCard Whether the last component may contain
186	* wildcards and thus might require exclusion
187	* from the case correction.
188	* @param fPreserveLastComponent Always exclude the last component from case
189	* correction if set.
190	*/
191	static int vbsfCorrectPathCasing(SHFLCLIENTDATA pClient, char pszFullPath, size_t cchFullPath,
192	bool fWildCard, bool fPreserveLastComponent)
193	{
194	/*
195	* Hide the last path component if it needs preserving. This is required
196	* in the following cases:
197	* - Contains the wildcard(s).
198	* - Is a 'rename' target.
199	*/
200	char *pszLastComponent = NULL;
201	if (fWildCard \|\| fPreserveLastComponent)
202	{
203	char *pszSrc = pszFullPath + cchFullPath - 1;
204	Assert(strchr(pszFullPath, '\0') == pszSrc + 1);
205	while ((uintptr_t)pszSrc > (uintptr_t)pszFullPath)
206	{
207	if (*pszSrc == RTPATH_DELIMITER)
208	break;
209	pszSrc--;
210	}
211	if (*pszSrc == RTPATH_DELIMITER)
212	{
213	if ( fPreserveLastComponent
214	/* Or does it really have wildcards? */
215	\|\| strchr(pszSrc + 1, '*') != NULL
216	\|\| strchr(pszSrc + 1, '?') != NULL
217	\|\| strchr(pszSrc + 1, '>') != NULL
218	\|\| strchr(pszSrc + 1, '<') != NULL
219	\|\| strchr(pszSrc + 1, '"') != NULL )
220	{
221	pszLastComponent = pszSrc;
222	*pszLastComponent = '\0';
223	}
224	}
225	}
226
227	/*
228	* If the path/file doesn't exist, we need to attempt case correcting it.
229	*/
230	/** @todo Don't check when creating files or directories; waste of time. */
231	int rc = vbsfQueryExistsEx(pszFullPath, SHFL_RT_LINK(pClient));
232	if (rc == VERR_FILE_NOT_FOUND \|\| rc == VERR_PATH_NOT_FOUND)
233	{
234	Log(("Handle case insensitive guest fs on top of host case sensitive fs for %s\n", pszFullPath));
235
236	/*
237	* Work from the end of the path to find a partial path that's valid.
238	*/
239	char *pszSrc = pszLastComponent ? pszLastComponent - 1 : pszFullPath + cchFullPath - 1;
240	Assert(strchr(pszFullPath, '\0') == pszSrc + 1);
241
242	while ((uintptr_t)pszSrc > (uintptr_t)pszFullPath)
243	{
244	if (*pszSrc == RTPATH_DELIMITER)
245	{
246	*pszSrc = '\0';
247	rc = vbsfQueryExistsEx(pszFullPath, SHFL_RT_LINK(pClient));
248	*pszSrc = RTPATH_DELIMITER;
249	if (RT_SUCCESS(rc))
250	{
251	#ifdef DEBUG
252	*pszSrc = '\0';
253	Log(("Found valid partial path %s\n", pszFullPath));
254	*pszSrc = RTPATH_DELIMITER;
255	#endif
256	break;
257	}
258	}
259
260	pszSrc--;
261	}
262	Assert(*pszSrc == RTPATH_DELIMITER && RT_SUCCESS(rc));
263	if ( *pszSrc == RTPATH_DELIMITER
264	&& RT_SUCCESS(rc))
265	{
266	/*
267	* Turn around and work the other way case correcting the components.
268	*/
269	pszSrc++;
270	for (;;)
271	{
272	bool fEndOfString = true;
273
274	/* Find the end of the component. */
275	char *pszEnd = pszSrc;
276	while (*pszEnd)
277	{
278	if (*pszEnd == RTPATH_DELIMITER)
279	break;
280	pszEnd++;
281	}
282
283	if (*pszEnd == RTPATH_DELIMITER)
284	{
285	fEndOfString = false;
286	*pszEnd = '\0';
287	#if 0 /** @todo Please, double check this. The original code is in the #if 0, what I hold as correct is in the #else. */
288	rc = RTPathQueryInfoEx(pszSrc, &info, RTFSOBJATTRADD_NOTHING, SHFL_RT_LINK(pClient));
289	#else
290	rc = vbsfQueryExistsEx(pszFullPath, SHFL_RT_LINK(pClient));
291	#endif
292	Assert(rc == VINF_SUCCESS \|\| rc == VERR_FILE_NOT_FOUND \|\| rc == VERR_PATH_NOT_FOUND);
293	}
294	else if (pszEnd == pszSrc)
295	rc = VINF_SUCCESS; /* trailing delimiter */
296	else
297	rc = VERR_FILE_NOT_FOUND;
298
299	if (rc == VERR_FILE_NOT_FOUND \|\| rc == VERR_PATH_NOT_FOUND)
300	{
301	/* Path component is invalid; try to correct the casing. */
302	rc = vbsfCorrectCasing(pClient, pszFullPath, pszSrc);
303	if (RT_FAILURE(rc))
304	{
305	/* Failed, so don't bother trying any further components. */
306	if (!fEndOfString)
307	pszEnd = RTPATH_DELIMITER; / Restore the original full path. */
308	break;
309	}
310	}
311
312	/* Next (if any). */
313	if (fEndOfString)
314	break;
315
316	*pszEnd = RTPATH_DELIMITER;
317	pszSrc = pszEnd + 1;
318	}
319	if (RT_FAILURE(rc))
320	Log(("Unable to find suitable component rc=%d\n", rc));
321	}
322	else
323	rc = VERR_FILE_NOT_FOUND;
324
325	}
326
327	/* Restore the final component if it was dropped. */
328	if (pszLastComponent)
329	*pszLastComponent = RTPATH_DELIMITER;
330
331	/* might be a new file so don't fail here! */
332	return VINF_SUCCESS;
333	}
334
335
336	#ifdef RT_OS_DARWIN
337	/* Misplaced hack! See todo! */
338
339	/** Normalize the string using kCFStringNormalizationFormD.
340	*
341	* @param pwszSrc The input UTF-16 string.
342	* @param cwcSrc Length of the input string in characters.
343	* @param ppwszDst Where to store the pointer to the resulting normalized string.
344	* @param pcwcDst Where to store length of the normalized string in characters (without the trailing nul).
345	*/
346	static int vbsfNormalizeStringDarwin(PCRTUTF16 pwszSrc, uint32_t cwcSrc, PRTUTF16 ppwszDst, uint32_t pcwcDst)
347	{
348	/** @todo This belongs in rtPathToNative or in the windows shared folder file system driver...
349	* The question is simply whether the NFD normalization is actually applied on a (virtual) file
350	* system level in darwin, or just by the user mode application libs. */
351
352	PRTUTF16 pwszNFD;
353	uint32_t cwcNFD;
354
355	CFMutableStringRef inStr = ::CFStringCreateMutable(NULL, 0);
356
357	/* Is 8 times length enough for decomposed in worst case...? */
358	size_t cbNFDAlloc = cwcSrc * 8 + 2;
359	pwszNFD = (PRTUTF16)RTMemAllocZ(cbNFDAlloc);
360	if (!pwszNFD)
361	{
362	return VERR_NO_MEMORY;
363	}
364
365	::CFStringAppendCharacters(inStr, (UniChar*)pwszSrc, cwcSrc);
366	::CFStringNormalize(inStr, kCFStringNormalizationFormD);
367	cwcNFD = ::CFStringGetLength(inStr);
368
369	CFRange rangeCharacters;
370	rangeCharacters.location = 0;
371	rangeCharacters.length = cwcNFD;
372	::CFStringGetCharacters(inStr, rangeCharacters, pwszNFD);
373
374	pwszNFD[cwcNFD] = 0x0000; /* NULL terminated */
375
376	CFRelease(inStr);
377
378	*ppwszDst = pwszNFD;
379	*pcwcDst = cwcNFD;
380	return VINF_SUCCESS;
381	}
382	#endif
383
384
385	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
386	/* See MSDN "Naming Files, Paths, and Namespaces".
387	* '<', '>' and '"' are allowed as possible wildcards (see ANSI_DOS_STAR, etc in ntifs.h)
388	*/
389	static const char sachCharBlackList[] = ":/\\\|";
390	#else
391	/* Something else. */
392	static const char sachCharBlackList[] = "/";
393	#endif
394
395	/** Verify if the character can be used in a host file name.
396	* Wildcard characters ('?', '*') are allowed.
397	*
398	* @param c Character to verify.
399	*/
400	static bool vbsfPathIsValidNameChar(unsigned char c)
401	{
402	/* Character 0 is not allowed too. */
403	if (c == 0 \|\| strchr(sachCharBlackList, c))
404	{
405	return false;
406	}
407
408	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
409	/* Characters less than 32 are not allowed. */
410	if (c < 32)
411	{
412	return false;
413	}
414	#endif
415
416	return true;
417	}
418
419	/** Verify if the character is a wildcard.
420	*
421	* @param c Character to verify.
422	*/
423	static bool vbsfPathIsWildcardChar(char c)
424	{
425	if ( c == '*'
426	\|\| c == '?'
427	#ifdef RT_OS_WINDOWS /* See ntifs.h */
428	\|\| c == '<' /* ANSI_DOS_STAR */
429	\|\| c == '>' /* ANSI_DOS_QM */
430	\|\| c == '"' /* ANSI_DOS_DOT */
431	#endif
432	)
433	{
434	return true;
435	}
436
437	return false;
438	}
439
440	int vbsfPathGuestToHost(SHFLCLIENTDATA *pClient, SHFLROOT hRoot,
441	PCSHFLSTRING pGuestString, uint32_t cbGuestString,
442	char *ppszHostPath, uint32_t pcbHostPathRoot,
443	uint32_t fu32Options,
444	uint32_t *pfu32PathFlags)
445	{
446	#ifdef VBOX_STRICT
447	/*
448	* Check that the pGuestPath has correct size and encoding.
449	*/
450	if (ShflStringIsValidIn(pGuestString, cbGuestString, RT_BOOL(pClient->fu32Flags & SHFL_CF_UTF8)) == false)
451	{
452	LogFunc(("Invalid input string\n"));
453	return VERR_INTERNAL_ERROR;
454	}
455	#else
456	NOREF(cbGuestString);
457	#endif
458
459	/*
460	* Resolve the root handle into a string.
461	*/
462	uint32_t cbRootLen = 0;
463	const char *pszRoot = NULL;
464	int rc = vbsfMappingsQueryHostRootEx(hRoot, &pszRoot, &cbRootLen);
465	if (RT_FAILURE(rc))
466	{
467	LogFunc(("invalid root\n"));
468	return rc;
469	}
470
471	AssertReturn(cbRootLen > 0, VERR_INTERNAL_ERROR_2); /* vbsfMappingsQueryHostRootEx ensures this. */
472
473	/*
474	* Get the UTF8 string with the relative path provided by the guest.
475	* If guest uses UTF-16 then convert it to UTF-8.
476	*/
477	uint32_t cbGuestPath = 0; /* Shut up MSC */
478	const char pchGuestPath = NULL; / Ditto. */
479	char pchGuestPathAllocated = NULL; / Converted from UTF-16. */
480	if (BIT_FLAG(pClient->fu32Flags, SHFL_CF_UTF8))
481	{
482	/* UTF-8 */
483	cbGuestPath = pGuestString->u16Length;
484	pchGuestPath = pGuestString->String.ach;
485	}
486	else
487	{
488	/* UTF-16 */
489
490	#ifdef RT_OS_DARWIN /* Misplaced hack! See todo! */
491	uint32_t cwcSrc = 0;
492	PRTUTF16 pwszSrc = NULL;
493	rc = vbsfNormalizeStringDarwin(&pGuestString->String.utf16[0],
494	pGuestString->u16Length / sizeof(RTUTF16),
495	&pwszSrc, &cwcSrc);
496	#else
497	uint32_t const cwcSrc = pGuestString->u16Length / sizeof(RTUTF16);
498	PCRTUTF16 const pwszSrc = &pGuestString->String.utf16[0];
499	#endif
500
501	if (RT_SUCCESS(rc))
502	{
503	size_t cbPathAsUtf8 = RTUtf16CalcUtf8Len(pwszSrc);
504	if (cbPathAsUtf8 >= cwcSrc)
505	{
506	/* Allocate buffer that will be able to contain the converted UTF-8 string. */
507	pchGuestPathAllocated = (char *)RTMemAlloc(cbPathAsUtf8 + 1);
508	if (RT_LIKELY(pchGuestPathAllocated != NULL))
509	{
510	if (RT_LIKELY(cbPathAsUtf8))
511	{
512	size_t cchActual;
513	char *pszDst = pchGuestPathAllocated;
514	rc = RTUtf16ToUtf8Ex(pwszSrc, cwcSrc, &pszDst, cbPathAsUtf8 + 1, &cchActual);
515	AssertRC(rc);
516	AssertStmt(RT_FAILURE(rc) \|\| cchActual == cbPathAsUtf8, rc = VERR_INTERNAL_ERROR_4);
517	Assert(strlen(pszDst) == cbPathAsUtf8);
518	}
519
520	if (RT_SUCCESS(rc))
521	{
522	/* Terminate the string. */
523	pchGuestPathAllocated[cbPathAsUtf8] = '\0';
524
525	cbGuestPath = (uint32_t)cbPathAsUtf8; Assert(cbGuestPath == cbPathAsUtf8);
526	pchGuestPath = pchGuestPathAllocated;
527	}
528	}
529	else
530	{
531	rc = VERR_NO_MEMORY;
532	}
533	}
534	else
535	{
536	AssertFailed();
537	rc = VERR_INTERNAL_ERROR_3;
538	}
539
540	#ifdef RT_OS_DARWIN
541	RTMemFree(pwszSrc);
542	#endif
543	}
544	}
545
546	char *pszFullPath = NULL;
547
548	if (RT_SUCCESS(rc))
549	{
550	LogFlowFunc(("Root %s path %.*s\n", pszRoot, cbGuestPath, pchGuestPath));
551
552	/*
553	* Allocate enough memory to build the host full path from the root and the relative path.
554	*/
555	const uint32_t cbFullPathAlloc = cbRootLen + 1 + cbGuestPath + 1; /* root + possible_slash + relative + 0 */
556	pszFullPath = (char *)RTMemAlloc(cbFullPathAlloc);
557	if (RT_LIKELY(pszFullPath != NULL))
558	{
559	/* Buffer for the verified guest path. */
560	char pchVerifiedPath = (char )RTMemAlloc(cbGuestPath + 1);
561	if (RT_LIKELY(pchVerifiedPath != NULL))
562	{
563	/* Init the pointer for the guest relative path. */
564	uint32_t cbSrc = cbGuestPath;
565	const char *pchSrc = pchGuestPath;
566
567	/* Strip leading delimiters from the path the guest specified. */
568	while ( cbSrc > 0
569	&& *pchSrc == pClient->PathDelimiter)
570	{
571	++pchSrc;
572	--cbSrc;
573	}
574
575	/*
576	* Iterate the guest path components, verify each of them replacing delimiters with the host slash.
577	*/
578	char *pchDst = pchVerifiedPath;
579	bool fLastComponentHasWildcard = false;
580	for (; cbSrc > 0; --cbSrc, ++pchSrc)
581	{
582	if (RT_LIKELY(*pchSrc != pClient->PathDelimiter))
583	{
584	if (RT_LIKELY(vbsfPathIsValidNameChar(*pchSrc)))
585	{
586	if (pfu32PathFlags && vbsfPathIsWildcardChar(*pchSrc))
587	{
588	fLastComponentHasWildcard = true;
589	}
590
591	pchDst++ = pchSrc;
592	}
593	else
594	{
595	rc = VERR_INVALID_NAME;
596	break;
597	}
598	}
599	else
600	{
601	/* Replace with the host slash. */
602	*pchDst++ = RTPATH_SLASH;
603
604	if (pfu32PathFlags && fLastComponentHasWildcard && cbSrc > 1)
605	{
606	/* Processed component has a wildcard and there are more characters in the path. */
607	*pfu32PathFlags \|= VBSF_F_PATH_HAS_WILDCARD_IN_PREFIX;
608	}
609	fLastComponentHasWildcard = false;
610	}
611	}
612
613	if (RT_SUCCESS(rc))
614	{
615	*pchDst++ = 0;
616
617	/* Construct the full host path removing '.' and '..'. */
618	rc = vbsfPathAbs(pszRoot, pchVerifiedPath, pszFullPath, cbFullPathAlloc);
619	if (RT_SUCCESS(rc))
620	{
621	if (pfu32PathFlags && fLastComponentHasWildcard)
622	{
623	*pfu32PathFlags \|= VBSF_F_PATH_HAS_WILDCARD_IN_LAST;
624	}
625
626	/* Check if the full path is still within the shared folder. */
627	if (fu32Options & VBSF_O_PATH_CHECK_ROOT_ESCAPE)
628	{
629	if (!RTPathStartsWith(pszFullPath, pszRoot))
630	{
631	rc = VERR_INVALID_NAME;
632	}
633	}
634
635	if (RT_SUCCESS(rc))
636	{
637	/*
638	* If the host file system is case sensitive and the guest expects
639	* a case insensitive fs, then correct the path components casing.
640	*/
641	if ( vbsfIsHostMappingCaseSensitive(hRoot)
642	&& !vbsfIsGuestMappingCaseSensitive(hRoot))
643	{
644	const bool fWildCard = RT_BOOL(fu32Options & VBSF_O_PATH_WILDCARD);
645	const bool fPreserveLastComponent = RT_BOOL(fu32Options & VBSF_O_PATH_PRESERVE_LAST_COMPONENT);
646	rc = vbsfCorrectPathCasing(pClient, pszFullPath, strlen(pszFullPath),
647	fWildCard, fPreserveLastComponent);
648	}
649
650	if (RT_SUCCESS(rc))
651	{
652	LogFlowFunc(("%s\n", pszFullPath));
653
654	/* Return the full host path. */
655	*ppszHostPath = pszFullPath;
656
657	if (pcbHostPathRoot)
658	{
659	/* Return the length of the root path without the trailing slash. */
660	*pcbHostPathRoot = RTPATH_IS_SLASH(pszFullPath[cbRootLen - 1]) ?
661	cbRootLen - 1 : /* pszRoot already had the trailing slash. */
662	cbRootLen; /* pszRoot did not have the trailing slash. */
663	}
664	}
665	}
666	}
667	else
668	{
669	LogFunc(("vbsfPathAbs %Rrc\n", rc));
670	}
671	}
672
673	RTMemFree(pchVerifiedPath);
674	}
675	else
676	{
677	rc = VERR_NO_MEMORY;
678	}
679	}
680	else
681	{
682	rc = VERR_NO_MEMORY;
683	}
684	}
685
686	/*
687	* Cleanup.
688	*/
689	RTMemFree(pchGuestPathAllocated);
690
691	if (RT_SUCCESS(rc))
692	{
693	return rc;
694	}
695
696	/*
697	* Cleanup on failure.
698	*/
699	RTMemFree(pszFullPath);
700
701	LogFunc(("%Rrc\n", rc));
702	return rc;
703	}
704
705	void vbsfFreeHostPath(char *pszHostPath)
706	{
707	RTMemFree(pszHostPath);
708	}
709

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source: vbox/trunk/src/VBox/HostServices/SharedFolders/vbsfpath.cpp@ 100843

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