Fetching parent attribute for optional attributes in XPath

<?xml version="1.0" encoding="utf-8"?>
<client name="test">
  <projects active="true">
   <project id="pr1" active="false" />
   <project id="pr2" active="true" />
   <project id="pr3" />
 </projects>
</client>

For the above I need to fetch the project having active="true" in case it's been set at element level. If it is not then I need to go to parent element and fine the active element and check it.

We need to get all the project element hence this should return

   <project id="pr2" />
   <project id="pr3" />

I used the //project/ancestor-or-self::node()/@active[position()=1] but its not working.

Please help.