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package network::drakfirewall; # $Id$
use strict;
use diagnostics;
use network::shorewall;
use common;
my @all_servers =
(
{
name => N_("Web Server"),
pkg => 'apache apache-mod_perl boa',
ports => '80/tcp 443/tcp',
},
{
name => N_("Domain Name Server"),
pkg => 'bind',
ports => '53/tcp 53/udp',
},
{
name => N_("SSH server"),
pkg => 'openssh-server',
ports => '22/tcp',
},
{
name => N_("FTP server"),
pkg => 'ftp-server-krb5 wu-ftpd proftpd pure-ftpd',
ports => '20/tcp 21/tcp',
},
{
name => N_("Mail Server"),
pkg => 'sendmail postfix qmail',
ports => '25/tcp',
},
{
name => N_("POP and IMAP Server"),
pkg => 'imap courier-imap-pop',
ports => '109/tcp 110/tcp 143/tcp',
},
{
name => N_("Telnet server"),
pkg => 'telnet-server-krb5',
ports => '23/tcp',
hide => 1,
},
{
name => N_("Windows Files Sharing (SMB)"),
pkg => 'samba-server',
ports => '137/tcp 137/udp 138/tcp 138/udp 139/tcp 139/udp 445/tcp 445/udp 1024:1100/tcp 1024:1100/udp',
hide => 1,
},
{
name => N_("CUPS server"),
pkg => 'cups',
ports => '631/tcp 631/udp',
hide => 1,
},
{
name => N_("Echo request (ping)"),
ports => '8/icmp',
force_default_selection => 0,
},
{
name => N_("BitTorrent"),
ports => '6881:6999/tcp',
hide => 1,
pkg => 'bittorrent bittorrent-shadowsclient',
},
);
sub port2server {
my ($port) = @_;
find {
any { $port eq $_ } split(' ', $_->{ports});
} @all_servers;
}
sub check_ports_syntax {
my ($ports) = @_;
foreach (split ' ', $ports) {
my ($nb, $range, $nb2) = m!^(\d+)(:(\d+))?/(tcp|udp|icmp)$! or return $_;
foreach my $port ($nb, if_($range, $nb2)) {
1 <= $port && $port <= 65535 or return $_;
}
$nb < $nb2 or return $_ if $range;
}
'';
}
sub to_ports {
my ($servers, $unlisted) = @_;
join(' ', (map { $_->{ports} } @$servers), if_($unlisted, $unlisted));
}
sub from_ports {
my ($ports) = @_;
my @l;
my @unlisted;
foreach (split ' ', $ports) {
if (my $s = port2server($_)) {
push @l, $s;
} else {
push @unlisted, $_;
}
}
[ uniq(@l) ], join(' ', @unlisted);
}
sub default_from_pkgs {
my ($do_pkgs) = @_;
my @pkgs = $do_pkgs->are_installed(map { split ' ', $_->{pkg} } @all_servers);
[ grep {
my $s = $_;
exists $s->{force_default_selection} ?
$s->{force_default_selection} :
any { member($_, @pkgs) } split(' ', $s->{pkg});
} @all_servers ];
}
sub default_ports {
my ($do_pkgs) = @_;
to_ports(default_from_pkgs($do_pkgs), '');
}
sub get_ports() {
my $shorewall = network::shorewall::read() or return;
$shorewall->{ports};
}
sub set_ports {
my ($do_pkgs, $disabled, $ports, $o_in) = @_;
my $shorewall = network::shorewall::read($o_in) or return;
if (!$disabled || -x "$::prefix/sbin/shorewall") {
$do_pkgs->ensure_binary_is_installed('shorewall', 'shorewall', $::isInstall) or return;
$shorewall->{disabled} = $disabled;
$shorewall->{ports} = $ports;
log::l($disabled ? "disabling shorewall" : "configuring shorewall to allow ports: $ports");
network::shorewall::write($shorewall);
}
}
sub get_conf {
my ($in, $disabled, $o_ports) = @_;
my $possible_servers = default_from_pkgs($in->do_pkgs);
$_->{hide} = 0 foreach @$possible_servers;
if ($o_ports) {
$disabled, from_ports($o_ports);
} elsif (my $shorewall = network::shorewall::read()) {
$shorewall->{disabled}, from_ports($shorewall->{ports});
} else {
$in->ask_okcancel('', N("drakfirewall configurator
This configures a personal firewall for this Mandriva Linux machine.
For a powerful and dedicated firewall solution, please look to the
specialized Mandriva Security Firewall distribution."), 1) or return;
$in->ask_okcancel('', N("drakfirewall configurator
Make sure you have configured your Network/Internet access with
drakconnect before going any further."), 1) or return;
$disabled, $possible_servers, '';
}
}
sub choose {
my ($in, $disabled, $servers, $unlisted) = @_;
$_->{on} = 0 foreach @all_servers;
$_->{on} = 1 foreach @$servers;
my @l = grep { $_->{on} || !$_->{hide} } @all_servers;
$in->ask_from_({
messages => N("Which services would you like to allow the Internet to connect to?"),
title => N("Firewall"),
icon => 'banner-security',
advanced_messages => N("You can enter miscellaneous ports.
Valid examples are: 139/tcp 139/udp 600:610/tcp 600:610/udp.
Have a look at /etc/services for information."),
callbacks => {
complete => sub {
if (my $invalid_port = check_ports_syntax($unlisted)) {
$in->ask_warn('', N("Invalid port given: %s.
The proper format is \"port/tcp\" or \"port/udp\",
where port is between 1 and 65535.
You can also give a range of ports (eg: 24300:24350/udp)", $invalid_port));
return 1;
}
},
} },
[
{ text => N("Everything (no firewall)"), val => \$disabled, type => 'bool' },
(map { { text => translate($_->{name}), val => \$_->{on}, type => 'bool', disabled => sub { $disabled } } } @l),
{ label => N("Other ports"), val => \$unlisted, advanced => 1, disabled => sub { $disabled } }
]) or return;
$disabled, to_ports([ grep { $_->{on} } @l ], $unlisted);
}
sub main {
my ($in, $disabled) = @_;
($disabled, my $servers, my $unlisted) = get_conf($in, $disabled) or return;
($disabled, my $ports) = choose($in, $disabled, $servers, $unlisted) or return;
set_ports($in->do_pkgs, $disabled, $ports, $in) or return;
($disabled, $ports);
}
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