]>
git.proxmox.com Git - pve-firewall.git/blob - PVE/Firewall.pm
15 sub get_shorewall_macros
{
17 return $macros if $macros;
19 foreach my $path (</usr/share
/shorewall/macro
.*>) {
20 if ($path =~ m
|/macro\
.(\S
+)$|) {
27 sub parse_address_list
{
30 foreach my $aor (split(/,/, $str)) {
31 if (!Net
::IP-
>new($aor)) {
32 my $err = Net
::IP
::Error
();
33 die "invalid IP address: $err\n";
38 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
40 my $generate_input_rule = sub {
41 my ($zoneinfo, $rule, $net, $netid) = @_;
43 my $zone = $net->{zone
} || die "internal error";
44 my $zid = $zoneinfo->{$zone}->{zoneref
} || die "internal error";
45 my $tap = $net->{tap
} || die "internal error";
47 my $dest = "$zid:$tap";
50 $dest .= ":$rule->{dest}";
53 my $action = $rule->{service
} ?
54 "$rule->{service}($rule->{action})" : $rule->{action
};
58 if (!$rule->{source
}) {
59 push @$sources, 'all';
60 } elsif ($zoneinfo->{$zone}->{type
} eq 'bport') {
61 my $bridge_zone = $zoneinfo->{$zone}->{bridge_zone
} || die "internal error";
62 my $zoneref = $zoneinfo->{$bridge_zone}->{zoneref
} || die "internal error";
64 # using 'all' does not work, so we create one rule for
65 # each related zone on the same bridge
66 push @$sources, "${zoneref}:$rule->{source}";
67 foreach my $z (keys %$zoneinfo) {
69 next if !$zoneinfo->{$z}->{bridge_zone
};
70 next if $zoneinfo->{$z}->{bridge_zone
} ne $bridge_zone;
71 $zoneref = $zoneinfo->{$z}->{zoneref
} || die "internal error";
72 push @$sources, "${zoneref}:$rule->{source}";
75 push @$sources, "all:$rule->{source}";
80 foreach my $source (@$sources) {
81 $out .= sprintf($rule_format, $action, $source, $dest, $rule->{proto
} || '-',
82 $rule->{dport
} || '-', $rule->{sport
} || '-');
88 my $generate_output_rule = sub {
89 my ($zoneinfo, $rule, $net, $netid) = @_;
91 my $zone = $net->{zone
} || die "internal error";
92 my $zid = $zoneinfo->{$zone}->{zoneref
} || die "internal error";
93 my $tap = $net->{tap
} || die "internal error";
95 my $action = $rule->{service
} ?
96 "$rule->{service}($rule->{action})" : $rule->{action
};
100 if (!$rule->{dest
}) {
103 $dest = "all:$rule->{dest}";
106 return sprintf($rule_format, $action, "$zid:$tap", $dest,
107 $rule->{proto
} || '-', $rule->{dport
} || '-', $rule->{sport
} || '-');
110 # we need complete VM configuration of all VMs (openvz/qemu)
113 my $compile_shorewall = sub {
114 my ($targetdir, $vmdata, $rules) = @_;
116 # remove existing data ?
117 foreach my $file (qw(params zones rules interfaces maclist policy)) {
118 unlink "$targetdir/$file";
124 fw
=> { type
=> 'firewall' },
131 $register_bridge = sub {
132 my ($bridge, $vlan) = @_;
134 my $zone = 'z' . $bridge;
136 return $zone if $zoneinfo->{$zone};
138 my $ext_zone = "z${bridge}ext";
140 $zoneinfo->{$zone} = {
143 bridge_ext_zone
=> $ext_zone,
146 # physical input devices
147 my $dir = "/sys/class/net/$bridge/brif";
149 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond).+)', sub {
151 $physical->{$slave} = 1;
154 $zoneinfo->{$ext_zone} = {
156 bridge_zone
=> $zone,
160 return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
165 my $register_bridge_port = sub {
166 my ($bridge, $vlan, $vmzone, $tap) = @_;
168 my $bridge_zone = &$register_bridge($bridge, $vlan);
169 my $zone = $bridge_zone . $vmzone;
171 if (!$zoneinfo->{$zone}) {
172 $zoneinfo->{$zone} = {
174 bridge_zone
=> $bridge_zone,
179 $zoneinfo->{$zone}->{ifaces
}->{$tap} = 1;
184 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
185 $netinfo->{$vmid} = {};
186 my $conf = $vmdata->{qemu
}->{$vmid};
187 foreach my $opt (keys %$conf) {
188 next if $opt !~ m/^net(\d+)$/;
190 my $net = PVE
::QemuServer
::parse_net
($conf->{$opt});
192 die "implement me" if !$net->{bridge
};
194 my $vmzone = $conf->{zone
} || "vm$vmid";
195 $net->{tap
} = "tap${vmid}i${netnum}";
196 $maclist->{$net->{tap
}} = $net->{macaddr
} || die "internal error";
197 $net->{zone
} = &$register_bridge_port($net->{bridge
}, $net->{tag
}, $vmzone, $net->{tap
});
198 $netinfo->{$vmid}->{$opt} = $net;
202 #print Dumper($netinfo);
204 # NOTE: zone names have length limit, so we need to
205 # translate them into shorter names
208 my $zonemap = { fw
=> 'fw' };
210 my $lookup_zonename = sub {
213 return $zonemap->{$zone} if defined($zonemap->{$zone});
214 $zonemap->{$zone} = 'z' . $zoneid++;
216 return $zonemap->{$zone};
219 foreach my $z (sort keys %$zoneinfo) {
220 $zoneinfo->{$z}->{id
} = &$lookup_zonename($z);
221 $zoneinfo->{$z}->{zonevar
} = uc($z);
222 $zoneinfo->{$z}->{zoneref
} = '$' . $zoneinfo->{$z}->{zonevar
};
228 $out = "# PVE zones\n";
229 foreach my $z (sort keys %$zoneinfo) {
230 $out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n";
232 PVE
::Tools
::file_set_contents
("$targetdir/params", $out);
236 my $format = "%-30s %-10s %-15s\n";
237 $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
239 foreach my $z (sort keys %$zoneinfo) {
240 my $zid = $zoneinfo->{$z}->{zoneref
};
241 if ($zoneinfo->{$z}->{type
} eq 'firewall') {
242 $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type
}, '');
243 } elsif ($zoneinfo->{$z}->{type
} eq 'bridge') {
244 $out .= sprintf($format, $zid, 'ipv4', '');
245 } elsif ($zoneinfo->{$z}->{type
} eq 'bport') {
246 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone
} || die "internal error";
247 my $bzid = $zoneinfo->{$bridge_zone}->{zoneref
} || die "internal error";
248 $out .= sprintf($format, "$zid:$bzid", 'bport', '');
250 die "internal error";
254 $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
256 PVE
::Tools
::file_set_contents
("$targetdir/zones", $out);
260 $format = "%-25s %-20s %-10s %-15s\n";
261 $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS');
263 my $maclist_format = "%-15s %-15s %-15s\n";
264 my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
266 foreach my $z (sort keys %$zoneinfo) {
267 my $zid = $zoneinfo->{$z}->{zoneref
};
268 if ($zoneinfo->{$z}->{type
} eq 'firewall') {
270 } elsif ($zoneinfo->{$z}->{type
} eq 'bridge') {
271 my $bridge = $zoneinfo->{$z}->{bridge
} || die "internal error";
272 $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional');
273 } elsif ($zoneinfo->{$z}->{type
} eq 'bport') {
274 my $ifaces = $zoneinfo->{$z}->{ifaces
};
275 foreach my $iface (sort keys %$ifaces) {
276 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone
} || die "internal error";
277 my $bridge = $zoneinfo->{$bridge_zone}->{bridge
} || die "internal error";
278 my $iftxt = "$bridge:$iface";
280 if ($maclist->{$iface}) {
281 $out .= sprintf($format, $zid, $iftxt, '-', 'maclist');
282 $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
284 $out .= sprintf($format, $zid, $iftxt, '-', '');
288 die "internal error";
292 $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
294 PVE
::Tools
::file_set_contents
("$targetdir/interfaces", $out);
297 PVE
::Tools
::file_set_contents
("$targetdir/maclist", $macs);
301 $format = "%-15s %-15s %-15s %s\n";
302 $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
303 $out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
305 # we need to disable intra-zone traffic on bridges. Else traffic
306 # from untracked interfaces simply pass the firewall
307 foreach my $z (sort keys %$zoneinfo) {
308 my $zid = $zoneinfo->{$z}->{zoneref
};
309 if ($zoneinfo->{$z}->{type
} eq 'bridge') {
310 $out .= sprintf($format, $zid, $zid, 'REJECT', 'info');
313 $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
315 PVE
::Tools
::file_set_contents
("$targetdir/policy", $out);
320 $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
321 foreach my $vmid (sort keys %$rules) {
322 my $inrules = $rules->{$vmid}->{in};
323 my $outrules = $rules->{$vmid}->{out
};
325 if (scalar(@$inrules)) {
326 $out .= "# IN to VM $vmid\n";
327 foreach my $rule (@$inrules) {
328 foreach my $netid (keys %{$netinfo->{$vmid}}) {
329 my $net = $netinfo->{$vmid}->{$netid};
330 next if $rule->{iface
} && $rule->{iface
} ne $netid;
331 $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
336 if (scalar(@$outrules)) {
337 $out .= "# OUT from VM $vmid\n";
338 foreach my $rule (@$outrules) {
339 foreach my $netid (keys %{$netinfo->{$vmid}}) {
340 my $net = $netinfo->{$vmid}->{$netid};
341 next if $rule->{iface
} && $rule->{iface
} ne $netid;
342 $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
348 PVE
::Tools
::file_set_contents
("$targetdir/rules", $out);
353 my ($filename, $fh) = @_;
357 my $res = { in => [], out
=> [] };
359 my $macros = PVE
::Firewall
::get_shorewall_macros
();
361 while (defined(my $line = <$fh>)) {
362 next if $line =~ m/^#/;
363 next if $line =~ m/^\s*$/;
365 if ($line =~ m/^\[(in|out)\]\s*$/i) {
371 my ($action, $iface, $source, $dest, $proto, $dport, $sport) =
375 warn "skip incomplete line\n";
380 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
382 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
383 ($service, $action) = ($1, $2);
384 if (!$macros->{$service}) {
385 warn "unknown service '$service'\n";
389 warn "unknown action '$action'\n";
393 $iface = undef if $iface && $iface eq '-';
394 if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) {
395 warn "unknown interface '$iface'\n";
399 $proto = undef if $proto && $proto eq '-';
400 if ($proto && $proto !~ m/^(icmp|tcp|udp)$/) {
401 warn "unknown protokol '$proto'\n";
405 $source = undef if $source && $source eq '-';
406 $dest = undef if $dest && $dest eq '-';
408 $dport = undef if $dport && $dport eq '-';
409 $sport = undef if $sport && $sport eq '-';
412 parse_address_list
($source) if $source;
413 parse_address_list
($dest) if $dest;
434 push @{$res->{$section}}, $rule;
440 sub read_local_vm_config
{
446 my $list = PVE
::QemuServer
::config_list
();
448 foreach my $vmid (keys %$list) {
449 #next if !($vmid eq '100' || $vmid eq '102');
450 my $cfspath = PVE
::QemuServer
::cfs_config_path
($vmid);
451 if (my $conf = PVE
::Cluster
::cfs_read_file
($cfspath)) {
452 $qemu->{$vmid} = $conf;
456 my $vmdata = { openvz
=> $openvz, qemu
=> $qemu };
461 sub read_vm_firewall_rules
{
464 foreach my $vmid (keys %{$vmdata->{qemu
}}, keys %{$vmdata->{openvz
}}) {
465 my $filename = "/etc/pve/firewall/$vmid.fw";
466 my $fh = IO
::File-
>new($filename, O_RDONLY
);
469 $rules->{$vmid} = parse_fw_rules
($filename, $fh);
477 my $vmdata = read_local_vm_config
();
478 my $rules = read_vm_firewall_rules
($vmdata);
480 # print Dumper($vmdata);
482 my $swdir = '/etc/shorewall';
485 &$compile_shorewall($swdir, $vmdata, $rules);
487 PVE
::Tools
::run_command
(['shorewall', 'compile']);
490 sub compile_and_start
{
495 PVE
::Tools
::run_command
(['shorewall', $restart ?
'restart' : 'start']);