static jobject CreateFileInfo(JNIEnv *env, jstring path, bool append, LPWIN32_FIND_DATA lpData, jclass cls) {
jobject o = env->AllocObject(cls);
if (o == NULL) {
return NULL;
}
jstring fileName = env->NewString((jchar*)lpData->cFileName, (jsize)wcslen(lpData->cFileName));
if (fileName == NULL) {
return NULL;
}
env->SetObjectField(o, nameID, fileName);
bool read = false;
if (IS_SET(lpData->dwFileAttributes, FILE_ATTRIBUTE_REPARSE_POINT) && IS_SET(lpData->dwReserved0, IO_REPARSE_TAG_SYMLINK)) {
int nameLen = env->GetStringLength(path) + wcslen(lpData->cFileName) + 2;
wchar_t *lpName = (wchar_t *)malloc(nameLen * sizeof(wchar_t));
if (lpName != NULL) {
const jchar *dirName = env->GetStringChars(path, 0);
wcscpy_s(lpName, nameLen, (LPCWSTR)dirName);
env->ReleaseStringChars(path, dirName);
if (append) {
wcscat_s(lpName, nameLen, L"\\");
wcscat_s(lpName, nameLen, lpData->cFileName);
}
// read symlink target attributes
HANDLE th = CreateFile(lpName, FILE_READ_ATTRIBUTES, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (th != INVALID_HANDLE_VALUE) {
BY_HANDLE_FILE_INFORMATION targetData;
if (GetFileInformationByHandle(th, &targetData)) {
env->SetIntField(o, attributesID, targetData.dwFileAttributes);
env->SetLongField(o, timestampID, pairToInt64(targetData.ftLastWriteTime.dwLowDateTime, targetData.ftLastWriteTime.dwHighDateTime));
env->SetLongField(o, lengthID, pairToInt64(targetData.nFileSizeLow, targetData.nFileSizeHigh));
read = true;
}
CloseHandle(th);
}
free(lpName);
}
}
if (!read) {
env->SetIntField(o, attributesID, lpData->dwFileAttributes);
env->SetLongField(o, timestampID, pairToInt64(lpData->ftLastWriteTime.dwLowDateTime, lpData->ftLastWriteTime.dwHighDateTime));
env->SetLongField(o, lengthID, pairToInt64(lpData->nFileSizeLow, lpData->nFileSizeHigh));
}
return o;
}
static jobject CreateFileInfo(JNIEnv *env, jstring path, bool append, LPWIN32_FIND_DATA lpData, jclass fileInfoClass) {
DWORD attributes = lpData->dwFileAttributes;
LONGLONG timestamp = pairToInt64(lpData->ftLastWriteTime.dwLowDateTime, lpData->ftLastWriteTime.dwHighDateTime);
LONGLONG length = pairToInt64(lpData->nFileSizeLow, lpData->nFileSizeHigh);
if (IS_SET(attributes, FILE_ATTRIBUTE_REPARSE_POINT)) {
if (IS_SET(lpData->dwReserved0, IO_REPARSE_TAG_SYMLINK)) {
attributes = BROKEN_SYMLINK_ATTR;
timestamp = 0;
length = 0;
const jchar *dirName = env->GetStringChars(path, 0);
wchar_t *fullPath = (wchar_t *)dirName;
if (append) {
size_t nameLen = env->GetStringLength(path) + wcslen(lpData->cFileName) + 2;
fullPath = (wchar_t *)malloc(nameLen * sizeof(wchar_t));
if (fullPath != NULL) {
wcscpy_s(fullPath, nameLen, (LPCWSTR)dirName);
wcscat_s(fullPath, nameLen, L"\\");
wcscat_s(fullPath, nameLen, lpData->cFileName);
}
}
if (fullPath != NULL) {
// read symlink target attributes
HANDLE h = CreateFile(fullPath, 0, FILE_SHARE_ATTRIBUTES, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h != INVALID_HANDLE_VALUE) {
BY_HANDLE_FILE_INFORMATION targetData;
if (GetFileInformationByHandle(h, &targetData)) {
attributes = targetData.dwFileAttributes | FILE_ATTRIBUTE_REPARSE_POINT;
timestamp = pairToInt64(targetData.ftLastWriteTime.dwLowDateTime, targetData.ftLastWriteTime.dwHighDateTime);
length = pairToInt64(targetData.nFileSizeLow, targetData.nFileSizeHigh);
}
CloseHandle(h);
}
if (append) {
free(fullPath);
}
}
env->ReleaseStringChars(path, dirName);
}
else {
attributes &= (~ FILE_ATTRIBUTE_REPARSE_POINT); // keep reparse flag only for symlinks
}
}
jobject o = env->AllocObject(fileInfoClass);
if (o == NULL) {
return NULL;
}
jstring fileName = env->NewString((jchar*)lpData->cFileName, (jsize)wcslen(lpData->cFileName));
if (fileName == NULL) {
return NULL;
}
env->SetObjectField(o, nameID, fileName);
env->SetIntField(o, attributesID, attributes);
env->SetLongField(o, timestampID, timestamp);
env->SetLongField(o, lengthID, length);
return o;
}
