[pve-firewall.git] / PVE / Firewall.pm

package PVE::Firewall;

use warnings;
use strict;
use Data::Dumper;
use PVE::Tools;
use PVE::QemuServer;

my $macros;
sub get_shorewall_macros {

    return $macros if $macros;

    foreach my $path (</usr/share/shorewall/macro.*>) {
	if ($path =~ m|/macro\.(\S+)$|) {
	    $macros->{$1} = 1;
	}
    }
    return $macros;
}


my $rule_format = "%-15s %-15s %-15s %-15s %-15s %-15s\n";

my $generate_input_rule = sub {
    my ($zoneinfo, $rule, $net, $netid) = @_;

    die "not implemented" if $rule->{source} ne 'any';
    die "not implemented" if $rule->{dest} ne 'any';

    my $zone = $net->{zone} || die "internal error";
    my $zid = $zoneinfo->{$zone}->{id} || die "internal error";
    my $tap = $net->{tap} || die "internal error";

    my $action = $rule->{service} ? 
	"$rule->{service}($rule->{action})" : $rule->{action};

    return sprintf($rule_format, $action, $rule->{source}, "$zid:$tap", 
		   $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-');
};

my $generate_output_rule = sub {
    my ($zoneinfo, $rule, $net, $netid) = @_;

    die "not implemented" if $rule->{source} ne 'any';
    die "not implemented" if $rule->{dest} ne 'any';

    my $zone = $net->{zone} || die "internal error";
    my $zid = $zoneinfo->{$zone}->{id} || die "internal error";
    my $tap = $net->{tap} || die "internal error";

    my $action = $rule->{service} ? 
	"$rule->{service}($rule->{action})" : $rule->{action};
    
    return sprintf($rule_format, $action, "$zid:$tap", $rule->{dest}, 
		   $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-');
};

# we need complete VM configuration of all VMs (openvz/qemu)
# in vmdata

sub compile {
    my ($targetdir, $vmdata, $rules) = @_;

    # remove existing data ?
    foreach my $file (qw(zones rules interfaces  maclist  policy)) {
	unlink "$targetdir/$file";
    }

    my $netinfo;

    my $zoneinfo = {
	fw => { type => 'firewall' },
    };

    my $maclist = {};

    my $register_bridge;

    $register_bridge = sub {
	my ($bridge, $vlan) = @_;

	my $zone =  'z' . $bridge;

	return $zone if $zoneinfo->{$zone};

	$zoneinfo->{$zone} = {
	    type => 'bridge',
	    bridge => $bridge,
	};

	return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
	
	return $zone;
    };

    my $register_bridge_port = sub {
	my ($bridge, $vlan, $vmzone, $tap) = @_;

	my $bridge_zone = &$register_bridge($bridge, $vlan);
	my $zone = $bridge_zone . $vmzone;

	if (!$zoneinfo->{$zone}) {
	    $zoneinfo->{$zone} = {
		type => 'bport',
		bridge_zone => $bridge_zone,
		ifaces => {},
	    };
	}

	$zoneinfo->{$zone}->{ifaces}->{$tap} = 1;
	
	return $zone;
    };

    foreach my $vmid (keys %{$vmdata->{qemu}}) {
	$netinfo->{$vmid} = {};
	my $conf = $vmdata->{qemu}->{$vmid};
	foreach my $opt (keys %$conf) {
	    next if $opt !~ m/^net(\d+)$/;
	    my $netnum = $1;
	    my $net = PVE::QemuServer::parse_net($conf->{$opt});
	    next if !$net;
	    die "implement me" if !$net->{bridge};

	    my $vmzone = $conf->{zone} || "vm$vmid";
	    $net->{tap} = "tap${vmid}i${netnum}";
	    $maclist->{$net->{tap}} = $net->{macaddr} || die "internal error";
	    $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap});
	    $netinfo->{$vmid}->{$opt} = $net;
	}
    }

    #print Dumper($netinfo);

    # NOTE: zone names have length limit, so we need to
    # translate them into shorter names 

    my $zoneid = 0;
    my $zonemap = { fw => 'fw' };

    my $lookup_zonename = sub {
	my ($zone) = @_;

	return $zonemap->{$zone} if defined($zonemap->{$zone});
	$zonemap->{$zone} = 'z' . $zoneid++;

	return $zonemap->{$zone};
    };

    foreach my $z (sort keys %$zoneinfo) {
	$zoneinfo->{$z}->{id} = &$lookup_zonename($z);
    }

    # dump zone file

    my $out;

    my $format = "%-15s %-10s %-15s %s\n";
    $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS', '');
    
    foreach my $z (sort keys %$zoneinfo) {
	my $zid = $zoneinfo->{$z}->{id};
	if ($zoneinfo->{$z}->{type} eq 'firewall') {
	    $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '' , "# $z");
	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
	    $out .= sprintf($format, $zid, 'ipv4', '', "# $z");
	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
	    my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
	    my $bzid = $zoneinfo->{$bridge_zone}->{id} || die "internal error";
	    $out .= sprintf($format, "$zid:$bzid", 'bport', '', "# $z");
	} else {
	    die "internal error";
	}
    }

    $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");

    PVE::Tools::file_set_contents("$targetdir/zones", $out);

    # dump interfaces

    $format = "%-15s %-20s %-10s %-15s %s\n";
    $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS', '');

    my $maclist_format = "%-15s %-15s %-15s\n";
    my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');

    foreach my $z (sort keys %$zoneinfo) {
	my $zid = $zoneinfo->{$z}->{id};
	if ($zoneinfo->{$z}->{type} eq 'firewall') {
	    # do nothing;
	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
	    my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error";
	    $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional', "# $z");

	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
	    my $ifaces = $zoneinfo->{$z}->{ifaces};
	    foreach my $iface (sort keys %$ifaces) {
		my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
		my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error";
		my $iftxt = "$bridge:$iface";
		$out .= sprintf($format, $zid, $iftxt, '-', 'maclist', "# $z");
		$macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
	    }
	} else {
	    die "internal error";
	}
    }

    $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");

    PVE::Tools::file_set_contents("$targetdir/interfaces", $out);

    # dump maclist
    PVE::Tools::file_set_contents("$targetdir/maclist", $macs);

    # dump policy

    $format = "%-15s %-15s %-15s %s\n";
    $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
    #$out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
    $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');

    PVE::Tools::file_set_contents("$targetdir/policy", $out);

    # dump rules
    $out = '';

    $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
    foreach my $vmid (sort keys %$rules) {
	if (my $inrules = $rules->{$vmid}->{in}) {
	    foreach my $rule (@$inrules) {
		foreach my $netid (keys %{$netinfo->{$vmid}}) {
		    my $net = $netinfo->{$vmid}->{$netid};
		    next if !($rule->{iface} eq 'any' || $rule->{iface} eq $netid);
		    $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
		}
	    }
	}

	if (my $outrules = $rules->{$vmid}->{out}) {
	    foreach my $rule (@$outrules) {
		foreach my $netid (keys %{$netinfo->{$vmid}}) {
		    my $net = $netinfo->{$vmid}->{$netid};
		    next if !($rule->{iface} eq 'any' || $rule->{iface} eq $netid);
		    $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
		}
	    }
	}
    }

    PVE::Tools::file_set_contents("$targetdir/rules", $out);

}


sub activate {

}


1;
Commit	Line	Data
	1	package PVE::Firewall;
	2
	3	use warnings;
	4	use strict;
	5	use Data::Dumper;
	6	use PVE::Tools;
	7	use PVE::QemuServer;
	8
	9	my $macros;
	10	sub get_shorewall_macros {
	11
	12	return $macros if $macros;
	13
	14	foreach my $path (</usr/share/shorewall/macro.*>) {
	15	if ($path =~ m\|/macro\.(\S+)$\|) {
	16	$macros->{$1} = 1;
	17	}
	18	}
	19	return $macros;
	20	}
	21
	22
	23	my $rule_format = "%-15s %-15s %-15s %-15s %-15s %-15s\n";
	24
	25	my $generate_input_rule = sub {
	26	my ($zoneinfo, $rule, $net, $netid) = @_;
	27
	28	die "not implemented" if $rule->{source} ne 'any';
	29	die "not implemented" if $rule->{dest} ne 'any';
	30
	31	my $zone = $net->{zone} \|\| die "internal error";
	32	my $zid = $zoneinfo->{$zone}->{id} \|\| die "internal error";
	33	my $tap = $net->{tap} \|\| die "internal error";
	34
	35	my $action = $rule->{service} ?
	36	"$rule->{service}($rule->{action})" : $rule->{action};
	37
	38	return sprintf($rule_format, $action, $rule->{source}, "$zid:$tap",
	39	$rule->{proto} \|\| '-', $rule->{dport} \|\| '-', $rule->{sport} \|\| '-');
	40	};
	41
	42	my $generate_output_rule = sub {
	43	my ($zoneinfo, $rule, $net, $netid) = @_;
	44
	45	die "not implemented" if $rule->{source} ne 'any';
	46	die "not implemented" if $rule->{dest} ne 'any';
	47
	48	my $zone = $net->{zone} \|\| die "internal error";
	49	my $zid = $zoneinfo->{$zone}->{id} \|\| die "internal error";
	50	my $tap = $net->{tap} \|\| die "internal error";
	51
	52	my $action = $rule->{service} ?
	53	"$rule->{service}($rule->{action})" : $rule->{action};
	54
	55	return sprintf($rule_format, $action, "$zid:$tap", $rule->{dest},
	56	$rule->{proto} \|\| '-', $rule->{dport} \|\| '-', $rule->{sport} \|\| '-');
	57	};
	58
	59	# we need complete VM configuration of all VMs (openvz/qemu)
	60	# in vmdata
	61
	62	sub compile {
	63	my ($targetdir, $vmdata, $rules) = @_;
	64
	65	# remove existing data ?
	66	foreach my $file (qw(zones rules interfaces maclist policy)) {
	67	unlink "$targetdir/$file";
	68	}
	69
	70	my $netinfo;
	71
	72	my $zoneinfo = {
	73	fw => { type => 'firewall' },
	74	};
	75
	76	my $maclist = {};
	77
	78	my $register_bridge;
	79
	80	$register_bridge = sub {
	81	my ($bridge, $vlan) = @_;
	82
	83	my $zone = 'z' . $bridge;
	84
	85	return $zone if $zoneinfo->{$zone};
	86
	87	$zoneinfo->{$zone} = {
	88	type => 'bridge',
	89	bridge => $bridge,
	90	};
	91
	92	return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
	93
	94	return $zone;
	95	};
	96
	97	my $register_bridge_port = sub {
	98	my ($bridge, $vlan, $vmzone, $tap) = @_;
	99
	100	my $bridge_zone = &$register_bridge($bridge, $vlan);
	101	my $zone = $bridge_zone . $vmzone;
	102
	103	if (!$zoneinfo->{$zone}) {
	104	$zoneinfo->{$zone} = {
	105	type => 'bport',
	106	bridge_zone => $bridge_zone,
	107	ifaces => {},
	108	};
	109	}
	110
	111	$zoneinfo->{$zone}->{ifaces}->{$tap} = 1;
	112
	113	return $zone;
	114	};
	115
	116	foreach my $vmid (keys %{$vmdata->{qemu}}) {
	117	$netinfo->{$vmid} = {};
	118	my $conf = $vmdata->{qemu}->{$vmid};
	119	foreach my $opt (keys %$conf) {
	120	next if $opt !~ m/^net(\d+)$/;
	121	my $netnum = $1;
	122	my $net = PVE::QemuServer::parse_net($conf->{$opt});
	123	next if !$net;
	124	die "implement me" if !$net->{bridge};
	125
	126	my $vmzone = $conf->{zone} \|\| "vm$vmid";
	127	$net->{tap} = "tap${vmid}i${netnum}";
	128	$maclist->{$net->{tap}} = $net->{macaddr} \|\| die "internal error";
	129	$net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap});
	130	$netinfo->{$vmid}->{$opt} = $net;
	131	}
	132	}
	133
	134	#print Dumper($netinfo);
	135
	136	# NOTE: zone names have length limit, so we need to
	137	# translate them into shorter names
	138
	139	my $zoneid = 0;
	140	my $zonemap = { fw => 'fw' };
	141
	142	my $lookup_zonename = sub {
	143	my ($zone) = @_;
	144
	145	return $zonemap->{$zone} if defined($zonemap->{$zone});
	146	$zonemap->{$zone} = 'z' . $zoneid++;
	147
	148	return $zonemap->{$zone};
	149	};
	150
	151	foreach my $z (sort keys %$zoneinfo) {
	152	$zoneinfo->{$z}->{id} = &$lookup_zonename($z);
	153	}
	154
	155	# dump zone file
	156
	157	my $out;
	158
	159	my $format = "%-15s %-10s %-15s %s\n";
	160	$out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS', '');
	161
	162	foreach my $z (sort keys %$zoneinfo) {
	163	my $zid = $zoneinfo->{$z}->{id};
	164	if ($zoneinfo->{$z}->{type} eq 'firewall') {
	165	$out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '' , "# $z");
	166	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
	167	$out .= sprintf($format, $zid, 'ipv4', '', "# $z");
	168	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
	169	my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} \|\| die "internal error";
	170	my $bzid = $zoneinfo->{$bridge_zone}->{id} \|\| die "internal error";
	171	$out .= sprintf($format, "$zid:$bzid", 'bport', '', "# $z");
	172	} else {
	173	die "internal error";
	174	}
	175	}
	176
	177	$out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
	178
	179	PVE::Tools::file_set_contents("$targetdir/zones", $out);
	180
	181	# dump interfaces
	182
	183	$format = "%-15s %-20s %-10s %-15s %s\n";
	184	$out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS', '');
	185
	186	my $maclist_format = "%-15s %-15s %-15s\n";
	187	my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
	188
	189	foreach my $z (sort keys %$zoneinfo) {
	190	my $zid = $zoneinfo->{$z}->{id};
	191	if ($zoneinfo->{$z}->{type} eq 'firewall') {
	192	# do nothing;
	193	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
	194	my $bridge = $zoneinfo->{$z}->{bridge} \|\| die "internal error";
	195	$out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional', "# $z");
	196
	197	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
	198	my $ifaces = $zoneinfo->{$z}->{ifaces};
	199	foreach my $iface (sort keys %$ifaces) {
	200	my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} \|\| die "internal error";
	201	my $bridge = $zoneinfo->{$bridge_zone}->{bridge} \|\| die "internal error";
	202	my $iftxt = "$bridge:$iface";
	203	$out .= sprintf($format, $zid, $iftxt, '-', 'maclist', "# $z");
	204	$macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
	205	}
	206	} else {
	207	die "internal error";
	208	}
	209	}
	210
	211	$out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
	212
	213	PVE::Tools::file_set_contents("$targetdir/interfaces", $out);
	214
	215	# dump maclist
	216	PVE::Tools::file_set_contents("$targetdir/maclist", $macs);
	217
	218	# dump policy
	219
	220	$format = "%-15s %-15s %-15s %s\n";
	221	$out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
	222	#$out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
	223	$out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
	224
	225	PVE::Tools::file_set_contents("$targetdir/policy", $out);
	226
	227	# dump rules
	228	$out = '';
	229
	230	$out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
	231	foreach my $vmid (sort keys %$rules) {
	232	if (my $inrules = $rules->{$vmid}->{in}) {
	233	foreach my $rule (@$inrules) {
	234	foreach my $netid (keys %{$netinfo->{$vmid}}) {
	235	my $net = $netinfo->{$vmid}->{$netid};
	236	next if !($rule->{iface} eq 'any' \|\| $rule->{iface} eq $netid);
	237	$out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
	238	}
	239	}
	240	}
	241
	242	if (my $outrules = $rules->{$vmid}->{out}) {
	243	foreach my $rule (@$outrules) {
	244	foreach my $netid (keys %{$netinfo->{$vmid}}) {
	245	my $net = $netinfo->{$vmid}->{$netid};
	246	next if !($rule->{iface} eq 'any' \|\| $rule->{iface} eq $netid);
	247	$out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
	248	}
	249	}
	250	}
	251	}
	252
	253	PVE::Tools::file_set_contents("$targetdir/rules", $out);
	254
	255	}
	256
	257
	258	sub activate {
	259
	260	}
	261
	262
	263	1;