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[SHELL32] Implement IsLFNDriveA/W and improve PathResolve (#4866)

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- Fix IsLFNDriveA and IsLFNDriveW functions.
- Add IsRemovableDrive helper function.
- Fix PathQualifyExW by using IsLFNDriveW.
CORE-11335
This commit is contained in:
Katayama Hirofumi MZ 2022-11-10 23:18:04 +09:00 committed by GitHub
parent 40863aebc4
commit 11a71418d5
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 153 additions and 23 deletions
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176
dll/win32/shell32/wine/shellpath.c
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@ -40,6 +40,7 @@
#include <strsafe.h>
#include <wine/debug.h>
#include <wine/unicode.h>
#include <assert.h>
#include <shlwapi_undoc.h>
#include <shellutils.h>
@ -103,6 +104,14 @@ DoGetProductType(PNT_PRODUCT_TYPE ProductType)
return TRUE;
}
BOOL APIENTRY IsRemovableDrive(DWORD iDrive)
{
WCHAR szRoot[] = L"C:\\";
assert(L'A' + iDrive <= L'Z');
szRoot[0] = (WCHAR)(L'A' + iDrive);
return GetDriveTypeW(szRoot) == DRIVE_REMOVABLE;
}
/*
########## Combining and Constructing paths ##########
*/
@ -151,7 +160,7 @@ PathQualifyExW(_Inout_ LPWSTR pszPath, _Inout_opt_ LPCWSTR pszDir, _In_ DWORD dw
INT iDrive, cchPathLeft;
WCHAR szTemp[MAX_PATH], szRoot[MAX_PATH];
PWCHAR pchTemp = szTemp, pchPath;
BOOL bLFN = TRUE;
BOOL bLFN;
TRACE("(%s,%s,0x%08x)\n", debugstr_w(pszPath), debugstr_w(pszDir), dwFlags);
@ -208,12 +217,27 @@ PathQualifyExW(_Inout_ LPWSTR pszPath, _Inout_opt_ LPCWSTR pszDir, _In_ DWORD dw
++pchTemp;
}
#if 0 // FIXME: IsLFNDriveW has a bug
bLFN = IsLFNDriveW(szRoot);
#endif
if (!bLFN)
{
/* FIXME: Support non-LFN */
PWCHAR pch;
for (pch = pchTemp; *pch != UNICODE_NULL; ++pch)
{
#define PATH_CHAR_CLASS_DOT 0x00000004
#define PATH_CHAR_CLASS_BACKSLASH 0x00000008
#define PATH_CHAR_CLASS_COLON 0x00000010
#define PATH_CHAR_CLASS_OTHER_VALID 0x00000100
#define VALID_SHORT_PATH_CHAR_CLASSES ( \
PATH_CHAR_CLASS_DOT | \
PATH_CHAR_CLASS_BACKSLASH | \
PATH_CHAR_CLASS_COLON | \
PATH_CHAR_CLASS_OTHER_VALID \
)
if (!PathIsValidCharW(*pch, VALID_SHORT_PATH_CHAR_CLASSES))
{
*pch = L'_';
}
}
}
StringCchCopyW(pszPath, MAX_PATH, szRoot);
@ -221,16 +245,33 @@ PathQualifyExW(_Inout_ LPWSTR pszPath, _Inout_opt_ LPCWSTR pszDir, _In_ DWORD dw
}
else /* UNC path: Begins with double backslash */
{
#if 0 // FIXME: IsLFNDriveW has a bug
bLFN = IsLFNDriveW(pchTemp);
#endif
if (!bLFN)
if (bLFN)
{
/* FIXME: Support non-LFN */
pszPath[2] = UNICODE_NULL; /* Cut off */
cchPathLeft -= (2 + 1);
pchTemp += 2;
}
else
{
PWCHAR pchSlash = StrChrW(pszPath + 2, L'\\');
if (pchSlash)
pchSlash = StrChrW(pchSlash + 1, L'\\');
if (pchSlash)
{
*(pchSlash + 1) = UNICODE_NULL; /* Cut off */
pchTemp += pchSlash - pszPath;
cchPathLeft -= (INT)(SIZE_T)(pchSlash - pszPath) + 1;
}
else
{
bLFN = TRUE;
pszPath[2] = UNICODE_NULL; /* Cut off */
cchPathLeft -= 2;
pchTemp += 2;
}
}
pszPath[2] = UNICODE_NULL; /* Cut off */
cchPathLeft -= (2 + 1);
pchTemp += 2;
}
/* Now pszPath is a root-like path or an empty string. */
@ -280,11 +321,60 @@ PathQualifyExW(_Inout_ LPWSTR pszPath, _Inout_opt_ LPCWSTR pszDir, _In_ DWORD dw
pchPath = &pszPath[lstrlenW(pszPath)];
if (!bLFN)
if (!bLFN) /* Not LFN? */
{
/* FIXME: Support non-LFN */
/* Copy MS-DOS 8.3 filename */
PWCHAR pchDot = NULL;
INT ich;
WCHAR szTitle[8 + 1] = L"";
INT cchTitle = 0;
WCHAR szDotExtension[1 + 3 + 1] = L"";
INT cchDotExtension = 0;
/* Copy the component to szTitle and szDotExtension... */
while (*pchTemp && *pchTemp != L'\\')
{
if (*pchTemp == L'.')
{
pchDot = pchTemp; /* Remember the last position */
/* Clear szDotExtension */
cchDotExtension = 0;
ZeroMemory(szDotExtension, sizeof(szDotExtension));
}
if (pchDot)
{
if (cchDotExtension < 1 + 3)
szDotExtension[cchDotExtension++] = *pchTemp;
}
else
{
if (cchTitle < 8)
szTitle[cchTitle++] = *pchTemp;
}
++pchTemp;
}
/* Add file title 'szTitle' to pchPath */
for (ich = 0; szTitle[ich] && cchPathLeft > 0; ++ich)
{
*pchPath++ = szTitle[ich];
--cchPathLeft;
}
/* Add file extension 'szDotExtension' to pchPath */
if (pchDot)
{
for (ich = 0; szDotExtension[ich] && cchPathLeft > 0; ++ich)
{
*pchPath++ = szDotExtension[ich];
--cchPathLeft;
}
}
}
else
else /* LFN */
{
/* Copy the component up to the next separator */
while (*pchTemp != UNICODE_NULL && *pchTemp != L'\\' && cchPathLeft > 0)
@ -490,11 +580,13 @@ BOOL WINAPI PathFileExistsAW (LPCVOID lpszPath)
*/
BOOL WINAPI IsLFNDriveA(LPCSTR lpszPath)
{
DWORD fnlen;
if (!GetVolumeInformationA(lpszPath, NULL, 0, NULL, &fnlen, NULL, NULL, 0))
return FALSE;
return fnlen > 12;
WCHAR szBuffW[MAX_PATH], *pszW = NULL;
if (lpszPath)
{
SHAnsiToUnicode(lpszPath, szBuffW, _countof(szBuffW));
pszW = szBuffW;
}
return IsLFNDriveW(pszW);
}
/*************************************************************************
@ -502,11 +594,49 @@ BOOL WINAPI IsLFNDriveA(LPCSTR lpszPath)
*/
BOOL WINAPI IsLFNDriveW(LPCWSTR lpszPath)
{
DWORD fnlen;
DWORD cchMaxFileName, iDrive;
WCHAR szRoot[MAX_PATH];
if (!GetVolumeInformationW(lpszPath, NULL, 0, NULL, &fnlen, NULL, NULL, 0))
return FALSE;
return fnlen > 12;
if (lpszPath == NULL || lpszPath[0] == UNICODE_NULL)
{
szRoot[0] = 0;
GetWindowsDirectoryW(szRoot, _countof(szRoot));
lpszPath = szRoot;
}
if (PathIsUNCW(lpszPath))
{
StringCchCopyW(szRoot, _countof(szRoot), lpszPath);
PathStripToRootW(szRoot);
if (StrChrW(szRoot + 2, L'\\') == NULL)
return TRUE; /* LFN */
StringCchCatW(szRoot, _countof(szRoot), L"\\"); /* Add a backslash */
}
else
{
assert(!PathIsRelativeW(lpszPath)); /* Assuming absolute path... */
iDrive = ((lpszPath[0] - L'A') & 0x1F);
PathBuildRootW(szRoot, iDrive);
if (!IsRemovableDrive(iDrive))
{
/* FIXME: Cache correctly */
}
}
#define MSDOS_8DOT3_LEN 12 /* MS-DOS 8.3 filename == length 12 */
/* GetVolumeInformation requires a root path */
if (!GetVolumeInformationW(szRoot, NULL, 0, NULL, &cchMaxFileName, NULL, NULL, 0))
{
/* Don't return FALSE when GetVolumeInformationW fails. */
return TRUE;
}
return cchMaxFileName > MSDOS_8DOT3_LEN;
}
/*************************************************************************