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#!/usr/bin/perl -w
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#
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# debconf config script for lsh-server
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#
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# Copyright (c) 2000, 2001, 2002 Timshel Knoll <timshel@debian.org>
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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# On Debian systems, see /usr/share/common-licenses/GPL for the GNU GPL.
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#
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use strict;
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use Debconf::Client::ConfModule ':all';
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sub ask_whether_to_purge_hostkey {
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   &input ("medium", "lsh-server/purge_hostkey");
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   my @ret = &go ();
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   return ($ret[0] == 30 ? -1 : 1);
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}
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sub get_lshd_port {
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   &input ("medium", "lsh-server/lshd_port");
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   my @ret = &go ();
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   my $port = &get ("lsh-server/lshd_port");
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   if ($port and $port !~ m/^\d+$/) {
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      $port = (getservbyname ($port, "tcp"))[2];
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   }
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   unless ($port) {
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      # invalid service entered: wasn't a number, and
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      # getservbyname failed, try again ...
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      # FIXME: try putting some sort of error message here?
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      &reset ("lsh-server/lshd_port");
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      return 0;
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   }
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   return ($ret[0] == 30 ? -1 : 1);
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}
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sub ask_whether_to_enable_sftp {
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   &input ("medium", "lsh-server/sftp");
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   my @ret = &go ();
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   return ($ret[0] == 30 ? -1 : 1);
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}
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sub configure () {
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   my $state = 0;
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   # The list of things to do, in order
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   # Aren't really long, descriptive function names fun ;-)
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   my @states = (
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      \&ask_whether_to_purge_hostkey,
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      \&get_lshd_port,
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      \&ask_whether_to_enable_sftp
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   );
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   # This is 1 or -1, depending on whether we're going forward or backward
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   # Required because otherwise when we back up to a question doesn't need
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   # to be asked, the engine will go forward again :-(
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   my $step = 1;
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   until ($state > $#states) {
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      if ($state < 0) {
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         $state = 0;
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         # We may have got here because of "backing up" to a question which
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         # was skipped, so make sure we're going forward from here to avoid
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         # an infinite loop
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         $step = 1;
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      }
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      $step = &{ $states[$state] } ($step);
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      $state += $step;
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   }
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}
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die "Syntax error: no argument" if (@ARGV <= 0);
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version ('2.0');
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my $capb = &capb ('backup');
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if ($ARGV[0] eq "configure" || $ARGV[0] eq "reconfigure") {
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   &configure ();
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}
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