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[Continued] Use SHGetKnownFolderPath to get path to localappdata for current user #5201

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[Continued] Use SHGetKnownFolderPath to get path to localappdata for current user #5201

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733f2b0
use shgetknownfolderpath instead of hand building the path
stevenbrix Jun 28, 2024
60b66d1
Merge branch 'main' into SHGetKnownFolderPath-Continued
ShikiSuen Apr 17, 2025
1b2f429
WINNT // Patch a fallthrough from `_kCFKnownLocationUserCurrent`.
ShikiSuen Apr 17, 2025
c8aa817
chore: comment against the previous commit.
ShikiSuen Apr 17, 2025
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36 changes: 14 additions & 22 deletions Sources/CoreFoundation/CFKnownLocations.c
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@

#if TARGET_OS_WIN32
#include <userenv.h>
#include <shlobj_core.h>
#endif

CFURLRef _Nullable _CFKnownLocationCreatePreferencesURLForUser(CFKnownLocationUser user, CFStringRef _Nullable username) {
Expand Down Expand Up @@ -96,30 +97,21 @@ CFURLRef _Nullable _CFKnownLocationCreatePreferencesURLForUser(CFKnownLocationUs
}
case _kCFKnownLocationUserCurrent:
username = CFGetUserName();
// fallthrough
// The above API returns a non-NULL CFStringRef. The failed result is an empty string.
// We need to check for that case and fall through to the next case.
if (!CFEqual(username, CFSTR(""))) {
break;
}
// fallthrough.
case _kCFKnownLocationUserByName: {
DWORD size = 0;
GetProfilesDirectoryW(NULL, &size);

wchar_t* path = (wchar_t*)malloc(size * sizeof(wchar_t));
GetProfilesDirectoryW(path, &size);

CFStringRef pathRef = CFStringCreateWithCharacters(kCFAllocatorSystemDefault, path, size - 1);
free(path);

CFURLRef profilesDir = CFURLCreateWithFileSystemPath(kCFAllocatorSystemDefault, pathRef, kCFURLWindowsPathStyle, true);
CFRelease(pathRef);

CFURLRef usernameDir = CFURLCreateCopyAppendingPathComponent(kCFAllocatorSystemDefault, profilesDir, username, true);
CFURLRef appdataDir = CFURLCreateCopyAppendingPathComponent(kCFAllocatorSystemDefault, usernameDir, CFSTR("AppData"), true);
location = CFURLCreateCopyAppendingPathComponent(kCFAllocatorSystemDefault, appdataDir, CFSTR("Local"), true);
CFRelease(usernameDir);
CFRelease(appdataDir);
wchar_t* path = NULL;
SHGetKnownFolderPath(&FOLDERID_LocalAppData, 0, NULL, &path);

CFStringRef userPath = CFStringCreateWithCharacters(kCFAllocatorSystemDefault, path, wcslen(path));
CoTaskMemFree(path);

CFRelease(profilesDir);
if (user == _kCFKnownLocationUserCurrent) {
CFRelease(username);
}
location = CFURLCreateWithFileSystemPath(kCFAllocatorSystemDefault, userPath, kCFURLWindowsPathStyle, true);
CFRelease(userPath);
break;
}
}
Expand Down