Conversion of APOP users

Hi all,

and thanks for your previous answers.
I need to populate my ispman ldap with users coming from an APOP 
authentication. We still have a qpopper server (5000 users with APOP and 
1000 users with PASSWORS) and are trying to test the migration toward 
ispman. I have seen that PASSWORDS authentication is well converted, but 
sincerely I do not know what to do for APOP users.
In apop the users and their crypted passwords are kept in a gdbm file; a 
user sends the server the username plus only a digest of a string obtained 
through md5 of the concatenation of the password with a secret number.
Only to better explain the difference between the usual passwords and 
qpopper APOP, here follows a more practical example, extracted from a very 
bad perl program of mine (please do not laugh) , in which I allowed my 
users to test and change their authentication method and their password 
from the web.

..
         $dest = sockaddr_in (110, inet_aton ('*****'));
         connect (SH, $dest) || die $!;
         $ingresso=<SH>;
         if ($oldmeth eq 'APOP')
#APOP
                 {
                 $ingresso=~s/.*</</;
                 ($ingresso,$dummy)=split (/>/,$ingresso);
                 $ingresso.='>';
                 $stringa=$ingresso.$oldpass;
                 $digest= md5_hex($stringa);
                 send (SH, "apop $utente $digest\n",0);
                 }
         else
#PASSWORDS
                 {
                 send (SH, "user $utente\n",0);
                 $ingresso=<SH>;
                 send (SH, "pass $oldpass\n",0);
                 }
         $ingresso=<SH>;
         if ( substr($ingresso,1,2) eq 'OK' )
....

Do you know whether a conversion is possible or do you think I need to make 
my users pass through passwords authentication ?

Ciao and thank you.
Ezio.
--
Ezio Paglia
Sistema Informativo e Architetture
SED Comune di Grosseto



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