Subj : Translate Filename to FidoNet
To   : Phillip Taylor
From : Scott Little
Date : Sun Sep 14 2008 08:14 pm

 [ On 2008-09-11 at 20:28:00, Phillip Taylor wrote to All ]

 PT> All the docs out there is written in c and I am trying to figure out
 PT> how to translate the filename that is used to translate the outgoing
 PT> mail bundle to fidonet node number?

It can vary depending on the mailer.  It could be a pseudorandom sequence 
number, but if it's always the same for a given node it's most likely it's 
hex(OrigNet - DestNet) + hex(OrigNode - DestNode).  Two's complement for 
negatives.

eg. 633/260 -> 712/848 = ffb1fdb4


    633 - 712 = -79
 -79 & 0xFFFF = 65457
              = FFB1

    260 - 848 = -588
-588 & 0xFFFF = 64948
              = FDB4


Packets are usually given the current timestamp (in hex), except when used as 
control files (eg. Binkley) in which case it's hex(DestNet) + hex(DestNode).

It's probably not a good idea to try to decode bundle names - read the control 
files instead.


-- Scott Little  [fidonet#3:712/848 / sysgod@sysgod.org]

--- Been there, done that, got the T-shirt.
 * Origin: [sysgod.org] Hail to the king, baby! (3:712/848)

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