[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}->{zoneref} || 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}->{zoneref} || 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 $file (qw(params zones rules interfaces  maclist  policy)) {
	unlink "$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);
	$zoneinfo->{$z}->{zonevar} = uc($z);
 	$zoneinfo->{$z}->{zoneref} = '$' . $zoneinfo->{$z}->{zonevar};
    }

    my $out;

    # dump params file
    $out = "# PVE zones\n";
    foreach my $z (sort keys %$zoneinfo) {
	$out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n";
    }
    PVE::Tools::file_set_contents("$targetdir/params", $out);

    # dump zone file

    my $format = "%-30s %-10s %-15s\n";
    $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
    
    foreach my $z (sort keys %$zoneinfo) {
	my $zid = $zoneinfo->{$z}->{zoneref};
	if ($zoneinfo->{$z}->{type} eq 'firewall') {
	    $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '');
	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
	    $out .= sprintf($format, $zid, 'ipv4', '');
	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
	    my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
	    my $bzid = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error";
	    $out .= sprintf($format, "$zid:$bzid", 'bport', '');
	} 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 = "%-25s %-20s %-10s %-15s\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}->{zoneref};
	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');

	} 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');
		$macs .= sprintf($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) {
	my $inrules = $rules->{$vmid}->{in};
	my $outrules = $rules->{$vmid}->{out};

	if (scalar(@$inrules)) {
	    $out .= "# IN to VM $vmid\n";
	    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 (scalar(@$outrules)) {
	    $out .= "# OUT from VM $vmid\n";
	    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
b6360c3f DM	1	package PVE::Firewall;
	2
	3	use warnings;
	4	use strict;
	5	use Data::Dumper;
f789653a	6	use PVE::Tools;
b6360c3f DM	7	use PVE::QemuServer;
b6360c3f DM	8
9aab3127 DM	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
dddd9413 DM	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";
a8195f4f	32	my $zid = $zoneinfo->{$zone}->{zoneref} \|\| die "internal error";
dddd9413	33	my $tap = $net->{tap} \|\| die "internal error";
9aab3127 DM	34
	35	my $action = $rule->{service} ?
	36	"$rule->{service}($rule->{action})" : $rule->{action};
	37
	38	return sprintf($rule_format, $action, $rule->{source}, "$zid:$tap",
dddd9413 DM	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";
a8195f4f	49	my $zid = $zoneinfo->{$zone}->{zoneref} \|\| die "internal error";
dddd9413	50	my $tap = $net->{tap} \|\| die "internal error";
9aab3127 DM	51
	52	my $action = $rule->{service} ?
	53	"$rule->{service}($rule->{action})" : $rule->{action};
dddd9413	54
9aab3127	55	return sprintf($rule_format, $action, "$zid:$tap", $rule->{dest},
dddd9413 DM	56	$rule->{proto} \|\| '-', $rule->{dport} \|\| '-', $rule->{sport} \|\| '-');
	57	};
	58
b6360c3f DM	59	# we need complete VM configuration of all VMs (openvz/qemu)
	60	# in vmdata
	61
	62	sub compile {
dddd9413	63	my ($targetdir, $vmdata, $rules) = @_;
b6360c3f	64
80bfe1ff	65	# remove existing data ?
a8195f4f	66	foreach my $file (qw(params zones rules interfaces maclist policy)) {
80bfe1ff DM	67	unlink "$targetdir/$file";
	68	}
	69
b6360c3f DM	70	my $netinfo;
b6360c3f DM	71
886aba9c DM	72	my $zoneinfo = {
	73	fw => { type => 'firewall' },
	74	};
	75
026a6466 DM	76	my $maclist = {};
026a6466 DM	77
35081236 DM	78	my $register_bridge;
	79
	80	$register_bridge = sub {
	81	my ($bridge, $vlan) = @_;
f789653a DM	82
	83	my $zone = 'z' . $bridge;
	84
	85	return $zone if $zoneinfo->{$zone};
	86
	87	$zoneinfo->{$zone} = {
	88	type => 'bridge',
	89	bridge => $bridge,
	90	};
35081236 DM	91
	92	return &$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;
f789653a DM	112
	113	return $zone;
	114	};
	115
b6360c3f DM	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 $opt !~ m/^net(\d+)$/;
dddd9413	121	my $netnum = $1;
b6360c3f DM	122	my $net = PVE::QemuServer::parse_net($conf->{$opt});
b6360c3f DM	123	next if !$net;
886aba9c	124	die "implement me" if !$net->{bridge};
886aba9c	125
f789653a	126	my $vmzone = $conf->{zone} \|\| "vm$vmid";
dddd9413	127	$net->{tap} = "tap${vmid}i${netnum}";
026a6466	128	$maclist->{$net->{tap}} = $net->{macaddr} \|\| die "internal error";
dddd9413 DM	129	$net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap});
dddd9413 DM	130	$netinfo->{$vmid}->{$opt} = $net;
886aba9c DM	131	}
	132	}
	133
	134	#print Dumper($netinfo);
	135
f789653a	136	# NOTE: zone names have length limit, so we need to
886aba9c DM	137	# translate them into shorter names
886aba9c DM	138
f789653a DM	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
dddd9413 DM	151	foreach my $z (sort keys %$zoneinfo) {
dddd9413 DM	152	$zoneinfo->{$z}->{id} = &$lookup_zonename($z);
a8195f4f DM	153	$zoneinfo->{$z}->{zonevar} = uc($z);
a8195f4f DM	154	$zoneinfo->{$z}->{zoneref} = '$' . $zoneinfo->{$z}->{zonevar};
dddd9413 DM	155	}
dddd9413 DM	156
f789653a	157	my $out;
886aba9c	158
a8195f4f DM	159	# dump params file
	160	$out = "# PVE zones\n";
	161	foreach my $z (sort keys %$zoneinfo) {
	162	$out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n";
	163	}
	164	PVE::Tools::file_set_contents("$targetdir/params", $out);
	165
	166	# dump zone file
	167
	168	my $format = "%-30s %-10s %-15s\n";
	169	$out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
f789653a	170
886aba9c	171	foreach my $z (sort keys %$zoneinfo) {
a8195f4f	172	my $zid = $zoneinfo->{$z}->{zoneref};
f789653a	173	if ($zoneinfo->{$z}->{type} eq 'firewall') {
a8195f4f	174	$out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '');
f789653a	175	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
a8195f4f	176	$out .= sprintf($format, $zid, 'ipv4', '');
f789653a DM	177	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
f789653a DM	178	my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} \|\| die "internal error";
a8195f4f DM	179	my $bzid = $zoneinfo->{$bridge_zone}->{zoneref} \|\| die "internal error";
a8195f4f DM	180	$out .= sprintf($format, "$zid:$bzid", 'bport', '');
f789653a DM	181	} else {
	182	die "internal error";
	183	}
886aba9c DM	184	}
886aba9c DM	185
f789653a DM	186	$out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
	187
	188	PVE::Tools::file_set_contents("$targetdir/zones", $out);
886aba9c	189
f789653a	190	# dump interfaces
886aba9c	191
a8195f4f DM	192	$format = "%-25s %-20s %-10s %-15s\n";
a8195f4f DM	193	$out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS');
f789653a	194
026a6466 DM	195	my $maclist_format = "%-15s %-15s %-15s\n";
	196	my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
	197
886aba9c	198	foreach my $z (sort keys %$zoneinfo) {
a8195f4f	199	my $zid = $zoneinfo->{$z}->{zoneref};
f789653a DM	200	if ($zoneinfo->{$z}->{type} eq 'firewall') {
	201	# do nothing;
	202	} elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
	203	my $bridge = $zoneinfo->{$z}->{bridge} \|\| die "internal error";
a8195f4f	204	$out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional');
f789653a DM	205
	206	} elsif ($zoneinfo->{$z}->{type} eq 'bport') {
	207	my $ifaces = $zoneinfo->{$z}->{ifaces};
	208	foreach my $iface (sort keys %$ifaces) {
	209	my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} \|\| die "internal error";
	210	my $bridge = $zoneinfo->{$bridge_zone}->{bridge} \|\| die "internal error";
	211	my $iftxt = "$bridge:$iface";
a8195f4f	212	$out .= sprintf($format, $zid, $iftxt, '-', 'maclist');
026a6466	213	$macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
f789653a DM	214	}
	215	} else {
	216	die "internal error";
b6360c3f DM	217	}
	218	}
	219
f789653a DM	220	$out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
	221
	222	PVE::Tools::file_set_contents("$targetdir/interfaces", $out);
	223
026a6466 DM	224	# dump maclist
	225	PVE::Tools::file_set_contents("$targetdir/maclist", $macs);
	226
f789653a DM	227	# dump policy
	228
	229	$format = "%-15s %-15s %-15s %s\n";
	230	$out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
80bfe1ff	231	#$out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
f789653a	232	$out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
886aba9c	233
f789653a	234	PVE::Tools::file_set_contents("$targetdir/policy", $out);
886aba9c	235
dddd9413 DM	236	# dump rules
	237	$out = '';
	238
	239	$out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
	240	foreach my $vmid (sort keys %$rules) {
78db5872 DM	241	my $inrules = $rules->{$vmid}->{in};
	242	my $outrules = $rules->{$vmid}->{out};
	243
	244	if (scalar(@$inrules)) {
	245	$out .= "# IN to VM $vmid\n";
dddd9413 DM	246	foreach my $rule (@$inrules) {
	247	foreach my $netid (keys %{$netinfo->{$vmid}}) {
	248	my $net = $netinfo->{$vmid}->{$netid};
	249	next if !($rule->{iface} eq 'any' \|\| $rule->{iface} eq $netid);
	250	$out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
	251	}
	252	}
	253	}
	254
78db5872 DM	255	if (scalar(@$outrules)) {
78db5872 DM	256	$out .= "# OUT from VM $vmid\n";
dddd9413 DM	257	foreach my $rule (@$outrules) {
	258	foreach my $netid (keys %{$netinfo->{$vmid}}) {
	259	my $net = $netinfo->{$vmid}->{$netid};
	260	next if !($rule->{iface} eq 'any' \|\| $rule->{iface} eq $netid);
	261	$out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
	262	}
	263	}
	264	}
	265	}
	266
	267	PVE::Tools::file_set_contents("$targetdir/rules", $out);
b6360c3f DM	268
	269	}
	270
886aba9c	271
b6360c3f DM	272	sub activate {
	273
	274	}
	275
	276
	277	1;