[Dovecot] Maildir/mbox on a per-user basis

[Jon Nathan]

* Timo Sirainen <tss at iki.fi> [11-28-2004 22:05]:
>
> On 20.11.2004, at 00:15, Jon Nathan wrote:
> 
> >default_mail_env can be overridden in userdb for each user. This works
> >with userdbs supporting the "mail" attribute (eg. passwd-file, SQL,
> >LDAP).
> >
> >How exactly does one do this for passwd-file?
> 
> user:password:uid:gid:(gecos):home:(shell):flags:mail
> 
> It's the mail part there.

Thanks for your help, Timo.  I now have this working.  In case this is
helpful to anyone, the below script generates a passwd-file from the
system passwd/shadow file (this was on Solaris).  It defaults users to
mbox, but assigns them to Maildir if their name is in a file of
maildir users.  Fairly simplistic, but it does the job for me.


#!/usr/bin/perl
# generates a passwd-file format file for dovecot imapd.
# this allows users to choose either maildir or mbox
# defaults to mbox; maildir users go into $maildirusers

# passwd-file format:
# user:password:uid:gid:(gecos):home:(shell):flags:mail

# files
$syspass="/etc/passwd";
$sysshad="/etc/shadow";
$dovecotpass="/usr/local/etc/dovecot.passwd";
$maildirusers="/usr/local/etc/dovecot.maildirusers";
umask 0077;

if(-f $dovecotpass){
  system("rm $dovecotpass"); # start fresh
}

open(SYSPASS,"<$syspass")||die("Can't open system passwd file $!\n");
while(<SYSPASS>){
  chomp($_);
  $syspassline=$_;
  ($user,$pass,$uid,$gid,$gecos,$home,$shell) = split(/:/,$syspassline);

  if($uid>100){    # don't run on system accounts
    $sysshadline=`grep '^$user:' $sysshad`;
    ($shaduser,$shadpass)=split(/:/,$sysshadline,3);
    
    $maildiruser=`grep '^$user\$' $maildirusers`;
    $flags=""; # for passwd-file format
    open(OUT,">>$dovecotpass");
    if($maildiruser){
      $mailbox="maildir:/home/$user/Maildir";
    }else{
      $mailbox="mbox:~/mail/:INBOX=/home/$user/mail/inbox";
    }
    print OUT "$user:$shadpass:$uid:$gid:$gecos:$home:$shell:$flags:$mailbox\n";
    close(OUT);
  }
}
close(SYSPASS);

#FIN




-Jon

-- 
Jon Nathan
jon at rupture.net