Fixed isReadOnly on Windows

Author: MCJack123

src/platform/win.cpp

@@ -496,8 +496,14 @@ bool winFolderIsReadOnly(path_t path) {
     HANDLE tokenHandle = nullptr;
 
     // Get current process token
-    if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &tokenHandle))
-        return true;
+    if (!OpenThreadToken(GetCurrentThread(), TOKEN_QUERY, TRUE, &tokenHandle)) {
+        if (GetLastError() == ERROR_NO_TOKEN) {
+            if (!ImpersonateSelf(SecurityImpersonation))
+                return true;
+            if (!OpenThreadToken(GetCurrentThread(), TOKEN_QUERY, TRUE, &tokenHandle))
+                return true;
+        } else return true;
+    }
 
     PSECURITY_DESCRIPTOR securityDesc = nullptr;
     PACL dacl = nullptr;

src/util.cpp

@@ -156,6 +156,8 @@ static std::list<std::string> split_list(const std::string& strToSplit, const ch
 
 path_t fixpath_mkdir(Computer * comp, const std::string& path, bool md, std::string * mountPath) {
     if (md && fixpath_ro(comp, path)) return path_t();
+    path_t firstTest = fixpath(comp, path, true, true, mountPath);
+    if (!firstTest.empty()) return firstTest;
     std::list<std::string> components = split_list(path, "/\\");
     while (!components.empty() && components.front().empty()) components.pop_front();
     if (components.empty()) return fixpath(comp, "", true);