tree ac0b68c303b85e101ac7819a9087feaadb2d6b0a
parent 6571561192c8b948159425ab09dfa9eae80f7812
author Benoit Bolsee <benoit.bolsee@wtl.be> 1499250858 +0200
committer Neels Hofmeyr <neels@hofmeyr.de> 1503848697 +0200

transaction: reject calls from unidentified subscribers

A valid subscriber is indespensible when allocating a new
transaction. Return NULL if no subscriber is supplied. This
will cause unidentified subscribers to be rejected.

Note: Under normal conditions, the problem does not occour,
but it is still possible that a misbehaving MS might trigger
the problem by sending a SETUP command before authenticating
the subscriber. (unencrypted networks)

Change-Id: Ia8739b6e329ab02c0064270d02ad1d6ee245520d