- drakfirewall: cloned to a drakfirewall6 for IPv6 firewall

1 files changed, 381 insertions, 0 deletions

diff --git a/lib/network/drakfirewall6.pm b/lib/network/drakfirewall6.pm
new file mode 100644
index 0000000..6c00fd7
--- /dev/null
+++ b/lib/network/drakfirewall6.pm
@@ -0,0 +1,381 @@
+package network::drakfirewall6; # $Id: drakfirewall.pm 268043 2010-04-30 13:29:37Z blino $
+
+
+
+use lib qw(/usr/lib/libDrakX);   # helps perl_checker
+use network::shorewall6;
+use common;
+use network::nfs;
+use network::network;
+
+my @all_servers =
+(
+  {
+   name => N_("Web Server"),
+   pkg => 'apache apache-mod_perl lighttpd nginx',
+   ports => '80/tcp 443/tcp',
+  },
+  {
+   name => N_("Domain Name Server"),
+   pkg => 'bind dnsmasq mydsn',
+   ports => '53/tcp 53/udp',
+  },
+  {
+   name => N_("SSH server"),
+   pkg => 'openssh-server',
+   ports => '22/tcp',
+  },
+  {
+   name => N_("FTP server"),
+   pkg => 'proftpd pure-ftpd',
+   ports => '20/tcp 21/tcp',
+  },
+  {
+   name => N_("DHCP Server"),
+   pkg => 'dhcp-server udhcpd',
+   ports => '67/udp 68/udp',
+   hide => 1,
+  },
+  {
+   name => N_("Mail Server"),
+   pkg => 'sendmail postfix',
+   ports => '25/tcp 465/tcp 587/tcp',
+  },
+  {
+   name => N_("POP and IMAP Server"),
+   pkg => 'imap courier-imap-pop',
+   ports => '109/tcp 110/tcp 143/tcp 993/tcp 995/tcp',
+  },
+  {
+   name => N_("Telnet server"),
+   pkg => 'netkit-telnet-server',
+   ports => '23/tcp',
+   hide => 1,
+  },
+  {
+   name => N_("NFS Server"),
+   pkg => 'nfs-utils',
+   ports => '111/tcp 111/udp 2049/tcp 2049/udp ' . network::nfs::list_nfs_ports(),
+   hide => 1,
+   prepare => sub { network::nfs::write_nfs_ports(network::nfs::read_nfs_ports()) },
+   restart => 'nfs-common nfs-server',
+  },
+  {
+   name => N_("Windows Files Sharing (SMB)"),
+   pkg => 'samba',
+   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_("Bacula backup"),
+   pkg => 'bacula-fd bacula-sd',
+   ports => '9101:9103/tcp',
+   hide => 1,
+  },
+  {
+   name => N_("Syslog network logging"),
+   pkg => 'rsyslog syslog-ng',
+   ports => '514/udp',
+   hide => 1,
+  },
+  {
+   name => N_("CUPS server"),
+   pkg => 'cups',
+   ports => '631/tcp 631/udp',
+   hide => 1,
+  },
+  {
+   name => N_("MySQL server"),
+   pkg => 'mariadb',
+   ports => '3306/tcp 3306/udp',
+   hide => 1,
+  },
+  {
+   name => N_("PostgreSQL server"),
+   pkg => 'postgresql9.4 postgresql9.6',
+   ports => '5432/tcp 5432/udp',
+   hide => 1,
+  },
+  {
+   name => N_("Echo request (ping)"),
+   ports => '8/icmp',
+   force_default_selection => 0,
+  },
+  {
+   name => N_("Network services autodiscovery (zeroconf and slp)"),
+   ports => '5353/udp 427/udp',
+   pkg => 'avahi cups openslp',
+  },
+  {
+   name => N_("BitTorrent"),
+   ports => '6881:6999/tcp 6881:6999/udp',
+   hide => 1,
+   pkg => 'bittorrent deluge ktorrent vuze rtorrent transmission-common',
+  },
+  {
+   name => N_("KDEConnect"),
+   ports => '1714:1764/udp 1714:1764/tcp',
+   hide => 1,
+   pkg => 'kdeconnect-kde',
+  },
+  {
+   name => N_("Ident server"),
+   ports => '113/tcp',
+   hide => 1,
+   pkg => 'oidentd',
+  },
+  {
+   name => N_("Windows Mobile device synchronization"),
+   ports => '990/tcp 999/tcp 5678/tcp 5679/udp 26675/tcp',
+   hide => 1,
+  },
+);
+
+my @ifw_rules = (
+    {
+        name => N_("Port scan detection"),
+        ifw_rule => 'psd',
+    },
+);
+
+# global network configuration
+my $net = {};
+network::network::read_net_conf($net);
+
+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 $shorewall6 = network::shorewall6::read() or return;
+    $shorewall6->{ports};
+}
+
+sub set_ports {
+    my ($do_pkgs, $disabled, $ports, $log_net_drop, $o_in) = @_;
+
+    if (!$disabled || -x "$::prefix/sbin/shorewall6") {
+	$do_pkgs->ensure_files_are_installed([ [ qw(shorewall shorewall) ], [ qw(shorewall-ipv6 shorewall6) ] ], $::isInstall) or return;
+	my $shorewall6 = network::shorewall6::read(!$disabled && $o_in);
+	if (!$shorewall6) {
+	    log::l("unable to read shorewall6 configuration, skipping installation");
+	    return;
+	}
+
+	$shorewall6->{disabled} = $disabled;
+	$shorewall6->{ports} = $ports;
+        $shorewall6->{log_net_drop} = $log_net_drop;
+	log::l($disabled ? "disabling shorewall6" : "configuring shorewall6 to allow ports: $ports");
+	network::shorewall6::write($shorewall6, $o_in);
+    }
+}
+
+sub get_conf {
+    my ($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 $shorewall6 = network::shorewall6::read()) {
+	$shorewall6->{disabled}, from_ports($shorewall6->{ports}), $shorewall6->{log_net_drop};
+    } else {
+	$in->ask_okcancel(N("IPv6 firewall configuration"), N("drakfirewall6 configurator
+
+This configures a personal ipv6 firewall for this Mageia machine."), 1) or return;
+
+	$in->ask_okcancel(N("IPv6 firewall configuration"), N("drakfirewall6 configurator
+
+Make sure you have configured your Network/Internet IPv6 access with
+drakconnect before going any further."), 1) or return;
+
+	$disabled, $possible_servers, '';
+    }
+}
+
+sub choose_allowed_services {
+    my ($in, $disabled, $servers, $unlisted, $log_net_drop) = @_;
+
+    $_->{on} = 0 foreach @all_servers;
+    $_->{on} = 1 foreach @$servers;
+    my @l = grep { $_->{on} || !$_->{hide} } @all_servers;
+
+    $in->ask_from_({
+		    title => N("Firewall IPv6"),
+		    icon => $network::shorewall6::firewall_icon,
+		    if_(!$::isEmbedded, banner_title => N("Firewall IPv6")),
+		    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)", $invalid_port));
+				return 1;
+			    }
+			},
+		   } },
+		  [
+		   { label => N("Which services would you like to allow the IPv6 Internet to connect to?"), title => 1 },
+		   if_($net->{PROFILE} && network::network::netprofile_count() > 0, { label => N("Those settings will be saved for the network profile <b>%s</b>", $net->{PROFILE}) }),
+		   { text => N("Everything (no firewall)"), val => \$disabled, type => 'bool' },
+		   (map { { text => translate($_->{name}), val => \$_->{on}, type => 'bool', disabled => sub { $disabled } } } @l),
+		   { label => N("Other ports"), val => \$unlisted, advanced => 1, disabled => sub { $disabled } },
+		   { text => N("Log firewall6 messages in system logs"), val => \$log_net_drop, type => 'bool', advanced => 1, disabled => sub { $disabled } },
+		  ]) or return;
+
+    $disabled, [ grep { $_->{on} } @l ], $unlisted, $log_net_drop;
+}
+
+sub set_ifw {
+    my ($do_pkgs, $enabled, $rules, $ports) = @_;
+    if ($enabled) {
+        $do_pkgs->ensure_is_installed('mandi-ifw', '/etc/ifw/start', $::isInstall) or return;
+
+        my $ports_by_proto = network::shorewall6::ports_by_proto($ports);
+        output_with_perm("$::prefix/etc/ifw/rules", 0644,
+            (map { ". /etc/ifw/rules.d/$_\n" } @$rules),
+            map {
+                my $proto = $_;
+                map {
+                    my $multiport = /:/ && " -m multiport";
+                    "iptables -A Ifw -m conntrack --ctstate NEW -p $proto$multiport --dport $_ -j IFWLOG --log-prefix NEW\n";
+                } @{$ports_by_proto->{$proto}};
+            } intersection([ qw(tcp udp) ], [ keys %$ports_by_proto ]),
+        );
+    }
+
+    substInFile {
+            undef $_ if m!^INCLUDE /etc/ifw/rules|^iptables -I INPUT 2 -j Ifw!;
+    } "$::prefix/etc/shorewall6/start";
+    network::shorewall6::set_in_file('start', $enabled, "INCLUDE /etc/ifw/start", "INCLUDE /etc/ifw/rules", "ip6tables -I INPUT 1 -j Ifw");
+    network::shorewall6::set_in_file('stop', $enabled, "ip6tables -D INPUT -j Ifw", "INCLUDE /etc/ifw/stop");
+}
+
+sub choose_watched_services {
+    my ($in, $servers, $unlisted) = @_;
+
+    my @l = (@ifw_rules, @$servers, map { { ports => $_ } } split(' ', $unlisted));
+    my $enabled = 1;
+    $_->{ifw} = 1 foreach @l;
+
+    $in->ask_from_({
+        icon => $network::shorewall6::firewall_icon,
+        if_(!$::isEmbedded, banner_title => N("Interactive IPv6 Firewall")),
+        messages =>
+          N("You can be warned when someone accesses to a service or tries to intrude into your computer.
+Please select which network activities should be watched."),
+        title => N("Interactive IPv6 Firewall"),
+    },
+                   [
+                       { text => N("Use Interactive IPv6 Firewall"), val => \$enabled, type => 'bool' },
+                       map { {
+                           text => (exists $_->{name} ? translate($_->{name}) : $_->{ports}),
+                           val => \$_->{ifw},
+                           type => 'bool', disabled => sub { !$enabled },
+                       } } @l,
+                   ]) or return;
+    my ($rules, $ports) = partition { exists $_->{ifw_rule} } grep { $_->{ifw} } @l;
+    set_ifw($in->do_pkgs, $enabled, [ map { $_->{ifw_rule} } @$rules ], to_ports($ports));
+
+    # return something to say that we are done ok
+    $rules, $ports;
+}
+
+sub main {
+    my ($in, $disabled) = @_;
+
+    ($disabled, my $servers, my $unlisted, my $log_net_drop) = get_conf($in, $disabled) or return;
+
+    ($disabled, $servers, $unlisted, $log_net_drop) = choose_allowed_services($in, $disabled, $servers, $unlisted, $log_net_drop) or return;
+
+    my $system_file = '/etc/sysconfig/drakx-net';
+    my %global_settings = getVarsFromSh($system_file);
+
+    if (!$disabled && (!defined($global_settings{IFW}) || text2bool($global_settings{IFW}))) {
+        choose_watched_services($in, $servers, $unlisted) or return;
+    }
+
+    # preparing services when required
+    foreach (@$servers) {
+        exists $_->{prepare} and $_->{prepare}();
+    }
+
+    my $ports = to_ports($servers, $unlisted);
+
+    set_ports($in->do_pkgs, $disabled, $ports, $log_net_drop, $in) or return;
+
+    # restart mandi
+    require services;
+    services::is_service_running("mandi") and services::restart("mandi");
+
+    # restarting services if needed
+    foreach my $service (@$servers) {
+        if ($service->{restart}) {
+            services::is_service_running($_) and services::restart($_) foreach split(' ', $service->{restart});
+        }
+    }
+
+    # clearing pending ifw notifications in net_applet
+    system('killall -s SIGUSR1 net_applet');
+
+    ($disabled, $ports);
+}
+
+1;