vbsfpath.cpp@ 87345

Last change on this file since 87345 was 82968, checked in by vboxsync, 5 years ago
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1	/* $Id: vbsfpath.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* Shared Folders Service - guest/host path convertion and verification.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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_SHARED_FOLDERS
23	#ifdef UNITTEST
24	# include "testcase/tstSharedFolderService.h"
25	#endif
26
27	#include "vbsfpath.h"
28	#include "mappings.h"
29	#include "vbsf.h"
30	#include "shflhandle.h"
31
32	#include <iprt/alloc.h>
33	#include <iprt/asm.h>
34	#include <iprt/assert.h>
35	#include <iprt/fs.h>
36	#include <iprt/dir.h>
37	#include <iprt/file.h>
38	#include <iprt/path.h>
39	#include <iprt/string.h>
40	#include <iprt/symlink.h>
41	#include <iprt/uni.h>
42	#include <iprt/stream.h>
43	#ifdef RT_OS_DARWIN
44	# include <Carbon/Carbon.h>
45	#endif
46
47	#ifdef UNITTEST
48	# include "teststubs.h"
49	#endif
50
51
52	/*********************************************************************************************************************************
53	* Defined Constants And Macros *
54	*********************************************************************************************************************************/
55	#define SHFL_RT_LINK(pClient) ((pClient)->fu32Flags & SHFL_CF_SYMLINKS ? RTPATH_F_ON_LINK : RTPATH_F_FOLLOW_LINK)
56
57
58	/**
59	* @todo find a better solution for supporting the execute bit for non-windows
60	* guests on windows host. Search for "0111" to find all the relevant places.
61	*/
62
63	/**
64	* Corrects the casing of the final component
65	*
66	* @returns
67	* @param pClient .
68	* @param pszFullPath .
69	* @param pszStartComponent .
70	*/
71	static int vbsfCorrectCasing(SHFLCLIENTDATA pClient, char pszFullPath, char *pszStartComponent)
72	{
73	Log2(("vbsfCorrectCasing: %s %s\n", pszFullPath, pszStartComponent));
74
75	AssertReturn((uintptr_t)pszFullPath < (uintptr_t)pszStartComponent - 1U, VERR_INTERNAL_ERROR_2);
76	AssertReturn(pszStartComponent[-1] == RTPATH_DELIMITER, VERR_INTERNAL_ERROR_5);
77
78	/*
79	* Allocate a buffer that can hold really long file name entries as well as
80	* the initial search pattern.
81	*/
82	size_t cchComponent = strlen(pszStartComponent);
83	size_t cchParentDir = pszStartComponent - pszFullPath;
84	size_t cchFullPath = cchParentDir + cchComponent;
85	Assert(strlen(pszFullPath) == cchFullPath);
86
87	size_t cbDirEntry = 4096;
88	if (cchFullPath + 4 > cbDirEntry - RT_OFFSETOF(RTDIRENTRYEX, szName))
89	cbDirEntry = RT_OFFSETOF(RTDIRENTRYEX, szName) + cchFullPath + 4;
90
91	PRTDIRENTRYEX pDirEntry = (PRTDIRENTRYEX)RTMemAlloc(cbDirEntry);
92	if (pDirEntry == NULL)
93	return VERR_NO_MEMORY;
94
95	/*
96	* Construct the search criteria in the szName member of pDirEntry.
97	*/
98	/** @todo This is quite inefficient, especially for directories with many
99	* files. If any of the typically case sensitive host systems start
100	* supporting opendir wildcard filters, it would make sense to build
101	* one here with '?' for case foldable charaters. */
102	/** @todo Use RTDirOpen here and drop the whole uncessary path copying? */
103	int rc = RTPathJoinEx(pDirEntry->szName, cbDirEntry - RT_OFFSETOF(RTDIRENTRYEX, szName),
104	pszFullPath, cchParentDir,
105	RT_STR_TUPLE("*"));
106	AssertRC(rc);
107	if (RT_SUCCESS(rc))
108	{
109	RTDIR hSearch = NULL;
110	rc = RTDirOpenFiltered(&hSearch, pDirEntry->szName, RTDIRFILTER_WINNT, 0 /fFlags/);
111	if (RT_SUCCESS(rc))
112	{
113	for (;;)
114	{
115	size_t cbDirEntrySize = cbDirEntry;
116
117	rc = RTDirReadEx(hSearch, pDirEntry, &cbDirEntrySize, RTFSOBJATTRADD_NOTHING, SHFL_RT_LINK(pClient));
118	if (rc == VERR_NO_MORE_FILES)
119	break;
120
121	if ( rc != VINF_SUCCESS
122	&& rc != VWRN_NO_DIRENT_INFO)
123	{
124	if ( rc == VERR_NO_TRANSLATION
125	\|\| rc == VERR_INVALID_UTF8_ENCODING)
126	continue;
127	AssertMsgFailed(("%Rrc\n", rc));
128	break;
129	}
130
131	Log2(("vbsfCorrectCasing: found %s\n", &pDirEntry->szName[0]));
132	if ( pDirEntry->cbName == cchComponent
133	&& !RTStrICmp(pszStartComponent, &pDirEntry->szName[0]))
134	{
135	Log(("Found original name %s (%s)\n", &pDirEntry->szName[0], pszStartComponent));
136	strcpy(pszStartComponent, &pDirEntry->szName[0]);
137	rc = VINF_SUCCESS;
138	break;
139	}
140	}
141
142	RTDirClose(hSearch);
143	}
144	}
145
146	if (RT_FAILURE(rc))
147	Log(("vbsfCorrectCasing %s failed with %Rrc\n", pszStartComponent, rc));
148
149	RTMemFree(pDirEntry);
150
151	return rc;
152	}
153
154	/* Temporary stand-in for RTPathExistEx. */
155	static int vbsfQueryExistsEx(const char *pszPath, uint32_t fFlags)
156	{
157	#if 0 /** @todo Fix the symlink issue on windows! */
158	return RTPathExistsEx(pszPath, fFlags);
159	#else
160	RTFSOBJINFO IgnInfo;
161	return RTPathQueryInfoEx(pszPath, &IgnInfo, RTFSOBJATTRADD_NOTHING, fFlags);
162	#endif
163	}
164
165	/**
166	* Helper for vbsfBuildFullPath that performs case corrections on the path
167	* that's being build.
168	*
169	* @returns VINF_SUCCESS at the moment.
170	* @param pClient The client data.
171	* @param pszFullPath Pointer to the full path. This is the path
172	* which may need case corrections. The
173	* corrections will be applied in place.
174	* @param cchFullPath The length of the full path.
175	* @param fWildCard Whether the last component may contain
176	* wildcards and thus might require exclusion
177	* from the case correction.
178	* @param fPreserveLastComponent Always exclude the last component from case
179	* correction if set.
180	*/
181	static int vbsfCorrectPathCasing(SHFLCLIENTDATA pClient, char pszFullPath, size_t cchFullPath,
182	bool fWildCard, bool fPreserveLastComponent)
183	{
184	/*
185	* Hide the last path component if it needs preserving. This is required
186	* in the following cases:
187	* - Contains the wildcard(s).
188	* - Is a 'rename' target.
189	*/
190	char *pszLastComponent = NULL;
191	if (fWildCard \|\| fPreserveLastComponent)
192	{
193	char *pszSrc = pszFullPath + cchFullPath - 1;
194	Assert(strchr(pszFullPath, '\0') == pszSrc + 1);
195	while ((uintptr_t)pszSrc > (uintptr_t)pszFullPath)
196	{
197	if (*pszSrc == RTPATH_DELIMITER)
198	break;
199	pszSrc--;
200	}
201	if (*pszSrc == RTPATH_DELIMITER)
202	{
203	if ( fPreserveLastComponent
204	/* Or does it really have wildcards? */
205	\|\| strchr(pszSrc + 1, '*') != NULL
206	\|\| strchr(pszSrc + 1, '?') != NULL
207	\|\| strchr(pszSrc + 1, '>') != NULL
208	\|\| strchr(pszSrc + 1, '<') != NULL
209	\|\| strchr(pszSrc + 1, '"') != NULL )
210	{
211	pszLastComponent = pszSrc;
212	*pszLastComponent = '\0';
213	}
214	}
215	}
216
217	/*
218	* If the path/file doesn't exist, we need to attempt case correcting it.
219	*/
220	/** @todo Don't check when creating files or directories; waste of time. */
221	int rc = vbsfQueryExistsEx(pszFullPath, SHFL_RT_LINK(pClient));
222	if (rc == VERR_FILE_NOT_FOUND \|\| rc == VERR_PATH_NOT_FOUND)
223	{
224	Log(("Handle case insensitive guest fs on top of host case sensitive fs for %s\n", pszFullPath));
225
226	/*
227	* Work from the end of the path to find a partial path that's valid.
228	*/
229	char *pszSrc = pszLastComponent ? pszLastComponent - 1 : pszFullPath + cchFullPath - 1;
230	Assert(strchr(pszFullPath, '\0') == pszSrc + 1);
231
232	while ((uintptr_t)pszSrc > (uintptr_t)pszFullPath)
233	{
234	if (*pszSrc == RTPATH_DELIMITER)
235	{
236	*pszSrc = '\0';
237	rc = vbsfQueryExistsEx(pszFullPath, SHFL_RT_LINK(pClient));
238	*pszSrc = RTPATH_DELIMITER;
239	if (RT_SUCCESS(rc))
240	{
241	#ifdef DEBUG
242	*pszSrc = '\0';
243	Log(("Found valid partial path %s\n", pszFullPath));
244	*pszSrc = RTPATH_DELIMITER;
245	#endif
246	break;
247	}
248	}
249
250	pszSrc--;
251	}
252	Assert(*pszSrc == RTPATH_DELIMITER && RT_SUCCESS(rc));
253	if ( *pszSrc == RTPATH_DELIMITER
254	&& RT_SUCCESS(rc))
255	{
256	/*
257	* Turn around and work the other way case correcting the components.
258	*/
259	pszSrc++;
260	for (;;)
261	{
262	bool fEndOfString = true;
263
264	/* Find the end of the component. */
265	char *pszEnd = pszSrc;
266	while (*pszEnd)
267	{
268	if (*pszEnd == RTPATH_DELIMITER)
269	break;
270	pszEnd++;
271	}
272
273	if (*pszEnd == RTPATH_DELIMITER)
274	{
275	fEndOfString = false;
276	*pszEnd = '\0';
277	#if 0 /** @todo Please, double check this. The original code is in the #if 0, what I hold as correct is in the #else. */
278	rc = RTPathQueryInfoEx(pszSrc, &info, RTFSOBJATTRADD_NOTHING, SHFL_RT_LINK(pClient));
279	#else
280	rc = vbsfQueryExistsEx(pszFullPath, SHFL_RT_LINK(pClient));
281	#endif
282	Assert(rc == VINF_SUCCESS \|\| rc == VERR_FILE_NOT_FOUND \|\| rc == VERR_PATH_NOT_FOUND);
283	}
284	else if (pszEnd == pszSrc)
285	rc = VINF_SUCCESS; /* trailing delimiter */
286	else
287	rc = VERR_FILE_NOT_FOUND;
288
289	if (rc == VERR_FILE_NOT_FOUND \|\| rc == VERR_PATH_NOT_FOUND)
290	{
291	/* Path component is invalid; try to correct the casing. */
292	rc = vbsfCorrectCasing(pClient, pszFullPath, pszSrc);
293	if (RT_FAILURE(rc))
294	{
295	/* Failed, so don't bother trying any further components. */
296	if (!fEndOfString)
297	pszEnd = RTPATH_DELIMITER; / Restore the original full path. */
298	break;
299	}
300	}
301
302	/* Next (if any). */
303	if (fEndOfString)
304	break;
305
306	*pszEnd = RTPATH_DELIMITER;
307	pszSrc = pszEnd + 1;
308	}
309	if (RT_FAILURE(rc))
310	Log(("Unable to find suitable component rc=%d\n", rc));
311	}
312	else
313	rc = VERR_FILE_NOT_FOUND;
314
315	}
316
317	/* Restore the final component if it was dropped. */
318	if (pszLastComponent)
319	*pszLastComponent = RTPATH_DELIMITER;
320
321	/* might be a new file so don't fail here! */
322	return VINF_SUCCESS;
323	}
324
325
326	#ifdef RT_OS_DARWIN
327	/* Misplaced hack! See todo! */
328
329	/** Normalize the string using kCFStringNormalizationFormD.
330	*
331	* @param pwszSrc The input UTF-16 string.
332	* @param cwcSrc Length of the input string in characters.
333	* @param ppwszDst Where to store the pointer to the resulting normalized string.
334	* @param pcwcDst Where to store length of the normalized string in characters (without the trailing nul).
335	*/
336	static int vbsfNormalizeStringDarwin(PCRTUTF16 pwszSrc, uint32_t cwcSrc, PRTUTF16 ppwszDst, uint32_t pcwcDst)
337	{
338	/** @todo This belongs in rtPathToNative or in the windows shared folder file system driver...
339	* The question is simply whether the NFD normalization is actually applied on a (virtual) file
340	* system level in darwin, or just by the user mode application libs. */
341
342	PRTUTF16 pwszNFD;
343	uint32_t cwcNFD;
344
345	CFMutableStringRef inStr = ::CFStringCreateMutable(NULL, 0);
346
347	/* Is 8 times length enough for decomposed in worst case...? */
348	size_t cbNFDAlloc = cwcSrc * 8 + 2;
349	pwszNFD = (PRTUTF16)RTMemAllocZ(cbNFDAlloc);
350	if (!pwszNFD)
351	{
352	return VERR_NO_MEMORY;
353	}
354
355	::CFStringAppendCharacters(inStr, (UniChar*)pwszSrc, cwcSrc);
356	::CFStringNormalize(inStr, kCFStringNormalizationFormD);
357	cwcNFD = ::CFStringGetLength(inStr);
358
359	CFRange rangeCharacters;
360	rangeCharacters.location = 0;
361	rangeCharacters.length = cwcNFD;
362	::CFStringGetCharacters(inStr, rangeCharacters, pwszNFD);
363
364	pwszNFD[cwcNFD] = 0x0000; /* NULL terminated */
365
366	CFRelease(inStr);
367
368	*ppwszDst = pwszNFD;
369	*pcwcDst = cwcNFD;
370	return VINF_SUCCESS;
371	}
372	#endif
373
374
375	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
376	/* See MSDN "Naming Files, Paths, and Namespaces".
377	* '<', '>' and '"' are allowed as possible wildcards (see ANSI_DOS_STAR, etc in ntifs.h)
378	*/
379	static const char sachCharBlackList[] = ":/\\\|";
380	#else
381	/* Something else. */
382	static const char sachCharBlackList[] = "/";
383	#endif
384
385	/** Verify if the character can be used in a host file name.
386	* Wildcard characters ('?', '*') are allowed.
387	*
388	* @param c Character to verify.
389	*/
390	static bool vbsfPathIsValidNameChar(unsigned char c)
391	{
392	/* Character 0 is not allowed too. */
393	if (c == 0 \|\| strchr(sachCharBlackList, c))
394	{
395	return false;
396	}
397
398	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
399	/* Characters less than 32 are not allowed. */
400	if (c < 32)
401	{
402	return false;
403	}
404	#endif
405
406	return true;
407	}
408
409	/** Verify if the character is a wildcard.
410	*
411	* @param c Character to verify.
412	*/
413	static bool vbsfPathIsWildcardChar(char c)
414	{
415	if ( c == '*'
416	\|\| c == '?'
417	#ifdef RT_OS_WINDOWS /* See ntifs.h */
418	\|\| c == '<' /* ANSI_DOS_STAR */
419	\|\| c == '>' /* ANSI_DOS_QM */
420	\|\| c == '"' /* ANSI_DOS_DOT */
421	#endif
422	)
423	{
424	return true;
425	}
426
427	return false;
428	}
429
430	int vbsfPathGuestToHost(SHFLCLIENTDATA *pClient, SHFLROOT hRoot,
431	PCSHFLSTRING pGuestString, uint32_t cbGuestString,
432	char *ppszHostPath, uint32_t pcbHostPathRoot,
433	uint32_t fu32Options,
434	uint32_t *pfu32PathFlags)
435	{
436	#ifdef VBOX_STRICT
437	/*
438	* Check that the pGuestPath has correct size and encoding.
439	*/
440	if (ShflStringIsValidIn(pGuestString, cbGuestString, RT_BOOL(pClient->fu32Flags & SHFL_CF_UTF8)) == false)
441	{
442	LogFunc(("Invalid input string\n"));
443	return VERR_INTERNAL_ERROR;
444	}
445	#else
446	NOREF(cbGuestString);
447	#endif
448
449	/*
450	* Resolve the root handle into a string.
451	*/
452	uint32_t cbRootLen = 0;
453	const char *pszRoot = NULL;
454	int rc = vbsfMappingsQueryHostRootEx(hRoot, &pszRoot, &cbRootLen);
455	if (RT_FAILURE(rc))
456	{
457	LogFunc(("invalid root\n"));
458	return rc;
459	}
460
461	AssertReturn(cbRootLen > 0, VERR_INTERNAL_ERROR_2); /* vbsfMappingsQueryHostRootEx ensures this. */
462
463	/*
464	* Get the UTF8 string with the relative path provided by the guest.
465	* If guest uses UTF-16 then convert it to UTF-8.
466	*/
467	uint32_t cbGuestPath = 0; /* Shut up MSC */
468	const char pchGuestPath = NULL; / Ditto. */
469	char pchGuestPathAllocated = NULL; / Converted from UTF-16. */
470	if (BIT_FLAG(pClient->fu32Flags, SHFL_CF_UTF8))
471	{
472	/* UTF-8 */
473	cbGuestPath = pGuestString->u16Length;
474	pchGuestPath = pGuestString->String.ach;
475	}
476	else
477	{
478	/* UTF-16 */
479
480	#ifdef RT_OS_DARWIN /* Misplaced hack! See todo! */
481	uint32_t cwcSrc = 0;
482	PRTUTF16 pwszSrc = NULL;
483	rc = vbsfNormalizeStringDarwin(&pGuestString->String.ucs2[0],
484	pGuestString->u16Length / sizeof(RTUTF16),
485	&pwszSrc, &cwcSrc);
486	#else
487	uint32_t const cwcSrc = pGuestString->u16Length / sizeof(RTUTF16);
488	PCRTUTF16 const pwszSrc = &pGuestString->String.ucs2[0];
489	#endif
490
491	if (RT_SUCCESS(rc))
492	{
493	size_t cbPathAsUtf8 = RTUtf16CalcUtf8Len(pwszSrc);
494	if (cbPathAsUtf8 >= cwcSrc)
495	{
496	/* Allocate buffer that will be able to contain the converted UTF-8 string. */
497	pchGuestPathAllocated = (char *)RTMemAlloc(cbPathAsUtf8 + 1);
498	if (RT_LIKELY(pchGuestPathAllocated != NULL))
499	{
500	if (RT_LIKELY(cbPathAsUtf8))
501	{
502	size_t cchActual;
503	char *pszDst = pchGuestPathAllocated;
504	rc = RTUtf16ToUtf8Ex(pwszSrc, cwcSrc, &pszDst, cbPathAsUtf8 + 1, &cchActual);
505	AssertRC(rc);
506	AssertStmt(RT_FAILURE(rc) \|\| cchActual == cbPathAsUtf8, rc = VERR_INTERNAL_ERROR_4);
507	Assert(strlen(pszDst) == cbPathAsUtf8);
508	}
509
510	if (RT_SUCCESS(rc))
511	{
512	/* Terminate the string. */
513	pchGuestPathAllocated[cbPathAsUtf8] = '\0';
514
515	cbGuestPath = (uint32_t)cbPathAsUtf8; Assert(cbGuestPath == cbPathAsUtf8);
516	pchGuestPath = pchGuestPathAllocated;
517	}
518	}
519	else
520	{
521	rc = VERR_NO_MEMORY;
522	}
523	}
524	else
525	{
526	AssertFailed();
527	rc = VERR_INTERNAL_ERROR_3;
528	}
529
530	#ifdef RT_OS_DARWIN
531	RTMemFree(pwszSrc);
532	#endif
533	}
534	}
535
536	char *pszFullPath = NULL;
537
538	if (RT_SUCCESS(rc))
539	{
540	LogFlowFunc(("Root %s path %.*s\n", pszRoot, cbGuestPath, pchGuestPath));
541
542	/*
543	* Allocate enough memory to build the host full path from the root and the relative path.
544	*/
545	const uint32_t cbFullPathAlloc = cbRootLen + 1 + cbGuestPath + 1; /* root + possible_slash + relative + 0 */
546	pszFullPath = (char *)RTMemAlloc(cbFullPathAlloc);
547	if (RT_LIKELY(pszFullPath != NULL))
548	{
549	/* Buffer for the verified guest path. */
550	char pchVerifiedPath = (char )RTMemAlloc(cbGuestPath + 1);
551	if (RT_LIKELY(pchVerifiedPath != NULL))
552	{
553	/* Init the pointer for the guest relative path. */
554	uint32_t cbSrc = cbGuestPath;
555	const char *pchSrc = pchGuestPath;
556
557	/* Strip leading delimiters from the path the guest specified. */
558	while ( cbSrc > 0
559	&& *pchSrc == pClient->PathDelimiter)
560	{
561	++pchSrc;
562	--cbSrc;
563	}
564
565	/*
566	* Iterate the guest path components, verify each of them replacing delimiters with the host slash.
567	*/
568	char *pchDst = pchVerifiedPath;
569	bool fLastComponentHasWildcard = false;
570	for (; cbSrc > 0; --cbSrc, ++pchSrc)
571	{
572	if (RT_LIKELY(*pchSrc != pClient->PathDelimiter))
573	{
574	if (RT_LIKELY(vbsfPathIsValidNameChar(*pchSrc)))
575	{
576	if (pfu32PathFlags && vbsfPathIsWildcardChar(*pchSrc))
577	{
578	fLastComponentHasWildcard = true;
579	}
580
581	pchDst++ = pchSrc;
582	}
583	else
584	{
585	rc = VERR_INVALID_NAME;
586	break;
587	}
588	}
589	else
590	{
591	/* Replace with the host slash. */
592	*pchDst++ = RTPATH_SLASH;
593
594	if (pfu32PathFlags && fLastComponentHasWildcard && cbSrc > 1)
595	{
596	/* Processed component has a wildcard and there are more characters in the path. */
597	*pfu32PathFlags \|= VBSF_F_PATH_HAS_WILDCARD_IN_PREFIX;
598	}
599	fLastComponentHasWildcard = false;
600	}
601	}
602
603	if (RT_SUCCESS(rc))
604	{
605	*pchDst++ = 0;
606
607	/* Construct the full host path removing '.' and '..'. */
608	rc = vbsfPathAbs(pszRoot, pchVerifiedPath, pszFullPath, cbFullPathAlloc);
609	if (RT_SUCCESS(rc))
610	{
611	if (pfu32PathFlags && fLastComponentHasWildcard)
612	{
613	*pfu32PathFlags \|= VBSF_F_PATH_HAS_WILDCARD_IN_LAST;
614	}
615
616	/* Check if the full path is still within the shared folder. */
617	if (fu32Options & VBSF_O_PATH_CHECK_ROOT_ESCAPE)
618	{
619	if (!RTPathStartsWith(pszFullPath, pszRoot))
620	{
621	rc = VERR_INVALID_NAME;
622	}
623	}
624
625	if (RT_SUCCESS(rc))
626	{
627	/*
628	* If the host file system is case sensitive and the guest expects
629	* a case insensitive fs, then correct the path components casing.
630	*/
631	if ( vbsfIsHostMappingCaseSensitive(hRoot)
632	&& !vbsfIsGuestMappingCaseSensitive(hRoot))
633	{
634	const bool fWildCard = RT_BOOL(fu32Options & VBSF_O_PATH_WILDCARD);
635	const bool fPreserveLastComponent = RT_BOOL(fu32Options & VBSF_O_PATH_PRESERVE_LAST_COMPONENT);
636	rc = vbsfCorrectPathCasing(pClient, pszFullPath, strlen(pszFullPath),
637	fWildCard, fPreserveLastComponent);
638	}
639
640	if (RT_SUCCESS(rc))
641	{
642	LogFlowFunc(("%s\n", pszFullPath));
643
644	/* Return the full host path. */
645	*ppszHostPath = pszFullPath;
646
647	if (pcbHostPathRoot)
648	{
649	/* Return the length of the root path without the trailing slash. */
650	*pcbHostPathRoot = RTPATH_IS_SLASH(pszFullPath[cbRootLen - 1]) ?
651	cbRootLen - 1 : /* pszRoot already had the trailing slash. */
652	cbRootLen; /* pszRoot did not have the trailing slash. */
653	}
654	}
655	}
656	}
657	else
658	{
659	LogFunc(("vbsfPathAbs %Rrc\n", rc));
660	}
661	}
662
663	RTMemFree(pchVerifiedPath);
664	}
665	else
666	{
667	rc = VERR_NO_MEMORY;
668	}
669	}
670	else
671	{
672	rc = VERR_NO_MEMORY;
673	}
674	}
675
676	/*
677	* Cleanup.
678	*/
679	RTMemFree(pchGuestPathAllocated);
680
681	if (RT_SUCCESS(rc))
682	{
683	return rc;
684	}
685
686	/*
687	* Cleanup on failure.
688	*/
689	RTMemFree(pszFullPath);
690
691	LogFunc(("%Rrc\n", rc));
692	return rc;
693	}
694
695	void vbsfFreeHostPath(char *pszHostPath)
696	{
697	RTMemFree(pszHostPath);
698	}
699

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source: vbox/trunk/src/VBox/HostServices/SharedFolders/vbsfpath.cpp@ 87345

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