def get_backlinks(environ, tiddler):
"""
Extract the current backlinks for this tiddler.
"""
store = environ['tiddlyweb.store']
usersign = environ['tiddlyweb.usersign']
links_manager = LinksManager(environ)
links = links_manager.read_backlinks(tiddler)
back_tiddlers = []
for link in links:
container, title = link.split(':', 1)
tiddler = Tiddler(title, container)
if _is_readable(store, usersign, tiddler):
back_tiddlers.append(tiddler)
return back_tiddlers
