You know this link:
http://media.photobucket.com/image/graphics/PennilessTeacher/Graphics/monster.jpg?o=8
redirects to this link:
http://i1133.photobucket.com/albums/m581/PennilessTeacher/Graphics/monster.jpg
Well, let's say I have:
<img src='http://media.photobucket.com/image/graphics/PennilessTeacher/Graphics/monster.jpg?o=8' width='blah' height = 'blah'/>
The request to the image URL will be redirected. I want to know the end URL. So in this case, it would be http://i1133.photobucket.com/albums/m581/PennilessTeacher/Graphics/monster.jpg.
I previously asked a question about fetching the status code of a cross domain image request, which seems to be impossible without a server side script doing the http request.
Server side scripts are out of the question here. I need the request to be processed on the client's side, as some of the sites the image element will be pointing to require some specific cookies that sit on the client side, which I obviously cannot help myself to as they're for a completely different domain. If that makes any sense...
Any client side language will do. Whether I know it or not.
Suggestions people? Or am I totally screwed?
There is no way to get that information using client side scripting. The only information in the DOM is the originally requested URI.
(If it was possible then information could be leaked. e.g. if http://example.com/me redirected to http://example.com/users/username and expose Alice's username on Bob's site to Malory (who ran the website with <img src="http://example.com/me"> on it when Alice visited that site … or perhaps it might redirect to http://cdn.example.com/alices/private/content/protected/by/time/limited/key/h4io3foiu32if390f490 and let Malory get access to Alice's private content).