[14497] in Athena Bugs
Hidden fields in zgrams!
daemon@ATHENA.MIT.EDU (Richard J. Barbalace)
Fri Aug 2 18:29:28 1996
To: bugs@MIT.EDU
Cc: zephyr@MIT.EDU
Date: Fri, 02 Aug 1996 18:21:09 EDT
From: "Richard J. Barbalace" <rjbarbal@MIT.EDU>
I'm not sure if this is a bug or a feature in zwgc, or a bug or a
feature in the default .zwgc.desc file. But I'd thought I'd report it
even though I think it's neat to have.
The default .zwgc.desc has lines likes:
fields signature body
This fields command takes the first and second fields of the message
and stores them in the variables $signature and $body. It drops all
other fields.
This means that one can send hidden messages in the third or later
field of the message which will not be seen by users of the default
.zwgc.desc (and most Unix variations of it). Mac Zephyr displays
the entire message.
I leave it as an exercise to the reader to code a simple perl script
which will allow the user to send as many fields as desired. You can
then send your own secret messages in, say, the 17th field. :)
I'm having too much fun today.
+ Richard
