void
File_GetPathName(ConstUnicode fullPath, // IN:
Unicode *pathName, // OUT (OPT):
Unicode *baseName) // OUT (OPT):
{
Unicode volume;
UnicodeIndex len;
UnicodeIndex curLen;
File_SplitName(fullPath, &volume, pathName, baseName);
if (pathName == NULL) {
Unicode_Free(volume);
return;
}
/*
* The volume component may be empty.
*/
if (!Unicode_IsEmpty(volume)) {
Unicode temp = Unicode_Append(volume, *pathName);
Unicode_Free(*pathName);
*pathName = temp;
}
Unicode_Free(volume);
/*
* Remove any trailing directory separator characters.
*/
len = Unicode_LengthInCodePoints(*pathName);
curLen = len;
while ((curLen > 0) &&
(FileFirstSlashIndex(*pathName, curLen - 1) == curLen - 1)) {
curLen--;
}
if (curLen < len) {
Unicode temp = Unicode_Substr(*pathName, 0, curLen);
Unicode_Free(*pathName);
*pathName = temp;
}
}
Bool
File_DoesVolumeSupportAcls(const char *path) // IN:
{
Bool succeeded = FALSE;
#if defined(_WIN32)
Bool res;
char *vol;
char *vol2;
const utf16_t *vol2W;
DWORD fsFlags;
ASSERT(path);
File_SplitName(path, &vol, NULL, NULL);
vol2 = Unicode_Append(vol, DIRSEPS);
vol2W = UNICODE_GET_UTF16(vol2);
res = GetVolumeInformationW(vol2W, NULL, 0, NULL, NULL, &fsFlags, NULL, 0);
UNICODE_RELEASE_UTF16(vol2W);
if (res) {
if ((fsFlags & FS_PERSISTENT_ACLS) == 0) {
goto exit;
}
} else {
Log(LGPFX" %s: GetVolumeInformation failed: %d\n", __FUNCTION__,
GetLastError());
goto exit;
}
succeeded = TRUE;
exit:
free(vol);
free(vol2);
#endif
return succeeded;
}
Unicode
File_StripSlashes(ConstUnicode path) // IN:
{
Unicode result, volume, dir, base;
/*
* SplitName handles all drive letter/UNC/whatever cases, all we
* have to do is make sure the dir part is stripped of slashes if
* there isn't a base part.
*/
File_SplitName(path, &volume, &dir, &base);
if (!Unicode_IsEmpty(dir) && Unicode_IsEmpty(base)) {
char *dir2 = Unicode_GetAllocBytes(dir, STRING_ENCODING_UTF8);
size_t i = strlen(dir2);
/*
* Don't strip first slash on Windows, since we want at least
* one slash to trail a drive letter/colon or UNC specifier.
*/
#if defined(_WIN32)
while ((i > 1) && (('/' == dir2[i - 1]) ||
('\\' == dir2[i - 1]))) {
#else
while ((i > 0) && ('/' == dir2[i - 1])) {
#endif
i--;
}
Unicode_Free(dir);
dir = Unicode_AllocWithLength(dir2, i, STRING_ENCODING_UTF8);
free(dir2);
}
result = Unicode_Join(volume, dir, base, NULL);
Unicode_Free(volume);
Unicode_Free(dir);
Unicode_Free(base);
return result;
}
/*
*-----------------------------------------------------------------------------
*
* File_MapPathPrefix --
*
* Given a path and a newPrefix -> oldPrefix mapping, transform
* oldPath according to the mapping.
*
* Results:
* The new path, or NULL if there is no mapping.
*
* Side effects:
* The returned string is allocated, free it.
*
*-----------------------------------------------------------------------------
*/
char *
File_MapPathPrefix(const char *oldPath, // IN:
const char **oldPrefixes, // IN:
const char **newPrefixes, // IN:
size_t numPrefixes) // IN:
{
int i;
size_t oldPathLen = strlen(oldPath);
for (i = 0; i < numPrefixes; i++) {
char *newPath;
char *oldPrefix;
char *newPrefix;
size_t oldPrefixLen;
oldPrefix = File_StripSlashes(oldPrefixes[i]);
newPrefix = File_StripSlashes(newPrefixes[i]);
oldPrefixLen = strlen(oldPrefix);
/*
* If the prefix matches on a DIRSEPS boundary, or the prefix is the
* whole string, replace it.
*
* If we don't insist on matching a whole directory name, we could
* mess things of if one directory is a substring of another.
*
* Perform a case-insensitive compare on Windows. (There are
* case-insensitive filesystems on MacOS also, but the problem
* is more acute with Windows because of frequent drive-letter
* case mismatches. So in lieu of actually asking the
* filesystem, let's just go with a simple ifdef for now.)
*/
if ((oldPathLen >= oldPrefixLen) &&
#ifdef _WIN32
(Str_Strncasecmp(oldPath, oldPrefix, oldPrefixLen) == 0) &&
#else
(Str_Strncmp(oldPath, oldPrefix, oldPrefixLen) == 0) &&
#endif
(strchr(VALID_DIRSEPS, oldPath[oldPrefixLen]) ||
(oldPath[oldPrefixLen] == '\0'))) {
size_t newPrefixLen = strlen(newPrefix);
size_t newPathLen = (oldPathLen - oldPrefixLen) + newPrefixLen;
ASSERT(newPathLen > 0);
ASSERT(oldPathLen >= oldPrefixLen);
newPath = Util_SafeMalloc((newPathLen + 1) * sizeof(char));
memcpy(newPath, newPrefix, newPrefixLen);
memcpy(newPath + newPrefixLen, oldPath + oldPrefixLen,
oldPathLen - oldPrefixLen + 1);
/*
* It should only match once. Weird self-referencing mappings
* aren't allowed.
*/
free(oldPrefix);
free(newPrefix);
return newPath;
}
free(oldPrefix);
free(newPrefix);
}
return NULL;
}
