def get(self, uid, tid, sim, cid, oid):
"""Redirect to main.
"""
sign = self.get_argument('s', None)
if not sign or not UWebHelper.check_sign(sign,
''.join([uid, tid, sim, cid, oid])):
raise tornado.web.HTTPError(401)
self.bookkeep(dict(uid=uid,
tid=tid,
sim=sim,
cid=cid,
oid=oid))
# NOTE: header is import.
self.set_header("P3P", "CP=CAO PSA OUR")
self.redirect("/?from=delegation")
