]>
git.proxmox.com Git - pve-firewall.git/blob - PVE/Firewall.pm
13 sub get_shorewall_macros
{
15 return $macros if $macros;
17 foreach my $path (</usr/share
/shorewall/macro
.*>) {
18 if ($path =~ m
|/macro\
.(\S
+)$|) {
26 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
28 my $generate_input_rule = sub {
29 my ($zoneinfo, $rule, $net, $netid) = @_;
31 my $zone = $net->{zone
} || die "internal error";
32 my $zid = $zoneinfo->{$zone}->{zoneref
} || die "internal error";
33 my $tap = $net->{tap
} || die "internal error";
35 my $dest = "$zid:$tap";
38 $dest .= ":$rule->{dest}";
41 my $action = $rule->{service
} ?
42 "$rule->{service}($rule->{action})" : $rule->{action
};
46 if (!$rule->{source
}) {
47 push @$sources, 'all';
48 } elsif ($zoneinfo->{$zone}->{type
} eq 'bport') {
49 my $bridge_zone = $zoneinfo->{$zone}->{bridge_zone
} || die "internal error";
50 my $zoneref = $zoneinfo->{$bridge_zone}->{zoneref
} || die "internal error";
52 # using 'all' does not work, so we create one rule for
53 # each related zone on the same bridge
54 push @$sources, "${zoneref}:$rule->{source}";
55 foreach my $z (keys %$zoneinfo) {
57 next if !$zoneinfo->{$z}->{bridge_zone
};
58 next if $zoneinfo->{$z}->{bridge_zone
} ne $bridge_zone;
59 $zoneref = $zoneinfo->{$z}->{zoneref
} || die "internal error";
60 push @$sources, "${zoneref}:$rule->{source}";
63 push @$sources, "all:$rule->{source}";
68 foreach my $source (@$sources) {
69 $out .= sprintf($rule_format, $action, $source, $dest, $rule->{proto
} || '-',
70 $rule->{dport
} || '-', $rule->{sport
} || '-');
76 my $generate_output_rule = sub {
77 my ($zoneinfo, $rule, $net, $netid) = @_;
79 my $zone = $net->{zone
} || die "internal error";
80 my $zid = $zoneinfo->{$zone}->{zoneref
} || die "internal error";
81 my $tap = $net->{tap
} || die "internal error";
83 my $action = $rule->{service
} ?
84 "$rule->{service}($rule->{action})" : $rule->{action
};
91 $dest = "all:$rule->{dest}";
94 return sprintf($rule_format, $action, "$zid:$tap", $dest,
95 $rule->{proto
} || '-', $rule->{dport
} || '-', $rule->{sport
} || '-');
98 # we need complete VM configuration of all VMs (openvz/qemu)
101 my $compile_shorewall = sub {
102 my ($targetdir, $vmdata, $rules) = @_;
104 # remove existing data ?
105 foreach my $file (qw(params zones rules interfaces maclist policy)) {
106 unlink "$targetdir/$file";
112 fw
=> { type
=> 'firewall' },
119 $register_bridge = sub {
120 my ($bridge, $vlan) = @_;
122 my $zone = 'z' . $bridge;
124 return $zone if $zoneinfo->{$zone};
126 my $ext_zone = "z${bridge}ext";
128 $zoneinfo->{$zone} = {
131 bridge_ext_zone
=> $ext_zone,
134 # physical input devices
135 my $dir = "/sys/class/net/$bridge/brif";
137 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond).+)', sub {
139 $physical->{$slave} = 1;
142 $zoneinfo->{$ext_zone} = {
144 bridge_zone
=> $zone,
148 return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
153 my $register_bridge_port = sub {
154 my ($bridge, $vlan, $vmzone, $tap) = @_;
156 my $bridge_zone = &$register_bridge($bridge, $vlan);
157 my $zone = $bridge_zone . $vmzone;
159 if (!$zoneinfo->{$zone}) {
160 $zoneinfo->{$zone} = {
162 bridge_zone
=> $bridge_zone,
167 $zoneinfo->{$zone}->{ifaces
}->{$tap} = 1;
172 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
173 $netinfo->{$vmid} = {};
174 my $conf = $vmdata->{qemu
}->{$vmid};
175 foreach my $opt (keys %$conf) {
176 next if $opt !~ m/^net(\d+)$/;
178 my $net = PVE
::QemuServer
::parse_net
($conf->{$opt});
180 die "implement me" if !$net->{bridge
};
182 my $vmzone = $conf->{zone
} || "vm$vmid";
183 $net->{tap
} = "tap${vmid}i${netnum}";
184 $maclist->{$net->{tap
}} = $net->{macaddr
} || die "internal error";
185 $net->{zone
} = &$register_bridge_port($net->{bridge
}, $net->{tag
}, $vmzone, $net->{tap
});
186 $netinfo->{$vmid}->{$opt} = $net;
190 #print Dumper($netinfo);
192 # NOTE: zone names have length limit, so we need to
193 # translate them into shorter names
196 my $zonemap = { fw
=> 'fw' };
198 my $lookup_zonename = sub {
201 return $zonemap->{$zone} if defined($zonemap->{$zone});
202 $zonemap->{$zone} = 'z' . $zoneid++;
204 return $zonemap->{$zone};
207 foreach my $z (sort keys %$zoneinfo) {
208 $zoneinfo->{$z}->{id
} = &$lookup_zonename($z);
209 $zoneinfo->{$z}->{zonevar
} = uc($z);
210 $zoneinfo->{$z}->{zoneref
} = '$' . $zoneinfo->{$z}->{zonevar
};
216 $out = "# PVE zones\n";
217 foreach my $z (sort keys %$zoneinfo) {
218 $out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n";
220 PVE
::Tools
::file_set_contents
("$targetdir/params", $out);
224 my $format = "%-30s %-10s %-15s\n";
225 $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
227 foreach my $z (sort keys %$zoneinfo) {
228 my $zid = $zoneinfo->{$z}->{zoneref
};
229 if ($zoneinfo->{$z}->{type
} eq 'firewall') {
230 $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type
}, '');
231 } elsif ($zoneinfo->{$z}->{type
} eq 'bridge') {
232 $out .= sprintf($format, $zid, 'ipv4', '');
233 } elsif ($zoneinfo->{$z}->{type
} eq 'bport') {
234 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone
} || die "internal error";
235 my $bzid = $zoneinfo->{$bridge_zone}->{zoneref
} || die "internal error";
236 $out .= sprintf($format, "$zid:$bzid", 'bport', '');
238 die "internal error";
242 $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
244 PVE
::Tools
::file_set_contents
("$targetdir/zones", $out);
248 $format = "%-25s %-20s %-10s %-15s\n";
249 $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS');
251 my $maclist_format = "%-15s %-15s %-15s\n";
252 my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
254 foreach my $z (sort keys %$zoneinfo) {
255 my $zid = $zoneinfo->{$z}->{zoneref
};
256 if ($zoneinfo->{$z}->{type
} eq 'firewall') {
258 } elsif ($zoneinfo->{$z}->{type
} eq 'bridge') {
259 my $bridge = $zoneinfo->{$z}->{bridge
} || die "internal error";
260 $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional');
261 } elsif ($zoneinfo->{$z}->{type
} eq 'bport') {
262 my $ifaces = $zoneinfo->{$z}->{ifaces
};
263 foreach my $iface (sort keys %$ifaces) {
264 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone
} || die "internal error";
265 my $bridge = $zoneinfo->{$bridge_zone}->{bridge
} || die "internal error";
266 my $iftxt = "$bridge:$iface";
268 if ($maclist->{$iface}) {
269 $out .= sprintf($format, $zid, $iftxt, '-', 'maclist');
270 $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
272 $out .= sprintf($format, $zid, $iftxt, '-', '');
276 die "internal error";
280 $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
282 PVE
::Tools
::file_set_contents
("$targetdir/interfaces", $out);
285 PVE
::Tools
::file_set_contents
("$targetdir/maclist", $macs);
289 $format = "%-15s %-15s %-15s %s\n";
290 $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
291 $out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
293 # we need to disable intra-zone traffic on bridges. Else traffic
294 # from untracked interfaces simply pass the firewall
295 foreach my $z (sort keys %$zoneinfo) {
296 my $zid = $zoneinfo->{$z}->{zoneref
};
297 if ($zoneinfo->{$z}->{type
} eq 'bridge') {
298 $out .= sprintf($format, $zid, $zid, 'REJECT', 'info');
301 $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
303 PVE
::Tools
::file_set_contents
("$targetdir/policy", $out);
308 $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
309 foreach my $vmid (sort keys %$rules) {
310 my $inrules = $rules->{$vmid}->{in};
311 my $outrules = $rules->{$vmid}->{out
};
313 if (scalar(@$inrules)) {
314 $out .= "# IN to VM $vmid\n";
315 foreach my $rule (@$inrules) {
316 foreach my $netid (keys %{$netinfo->{$vmid}}) {
317 my $net = $netinfo->{$vmid}->{$netid};
318 next if $rule->{iface
} && $rule->{iface
} ne $netid;
319 $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
324 if (scalar(@$outrules)) {
325 $out .= "# OUT from VM $vmid\n";
326 foreach my $rule (@$outrules) {
327 foreach my $netid (keys %{$netinfo->{$vmid}}) {
328 my $net = $netinfo->{$vmid}->{$netid};
329 next if $rule->{iface
} && $rule->{iface
} ne $netid;
330 $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
336 PVE
::Tools
::file_set_contents
("$targetdir/rules", $out);
341 my ($filename, $fh) = @_;
345 my $res = { in => [], out
=> [] };
347 my $macros = PVE
::Firewall
::get_shorewall_macros
();
349 while (defined(my $line = <$fh>)) {
350 next if $line =~ m/^#/;
351 next if $line =~ m/^\s*$/;
353 if ($line =~ m/^\[(in|out)\]\s*$/i) {
359 my ($action, $iface, $source, $dest, $proto, $dport, $sport) =
363 warn "skip incomplete line\n";
368 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
370 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
371 ($service, $action) = ($1, $2);
372 if (!$macros->{$service}) {
373 warn "unknown service '$service'\n";
377 warn "unknown action '$action'\n";
381 $iface = undef if $iface && $iface eq '-';
382 if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) {
383 warn "unknown interface '$iface'\n";
387 $proto = undef if $proto && $proto eq '-';
388 if ($proto && $proto !~ m/^(icmp|tcp|udp)$/) {
389 warn "unknown protokol '$proto'\n";
393 $source = undef if $source && $source eq '-';
395 # if ($source !~ m/^(XYZ)$/) {
396 # warn "unknown source '$source'\n";
400 $dest = undef if $dest && $dest eq '-';
401 # if ($dest !~ m/^XYZ)$/) {
402 # warn "unknown destination '$dest'\n";
406 $dport = undef if $dport && $dport eq '-';
407 $sport = undef if $sport && $sport eq '-';
420 push @{$res->{$section}}, $rule;
426 sub read_local_vm_config
{
432 my $list = PVE
::QemuServer
::config_list
();
434 foreach my $vmid (keys %$list) {
435 #next if !($vmid eq '100' || $vmid eq '102');
436 my $cfspath = PVE
::QemuServer
::cfs_config_path
($vmid);
437 if (my $conf = PVE
::Cluster
::cfs_read_file
($cfspath)) {
438 $qemu->{$vmid} = $conf;
442 my $vmdata = { openvz
=> $openvz, qemu
=> $qemu };
447 sub read_vm_firewall_rules
{
450 foreach my $vmid (keys %{$vmdata->{qemu
}}, keys %{$vmdata->{openvz
}}) {
451 my $filename = "/etc/pve/firewall/$vmid.fw";
452 my $fh = IO
::File-
>new($filename, O_RDONLY
);
455 $rules->{$vmid} = parse_fw_rules
($filename, $fh);
463 my $vmdata = read_local_vm_config
();
464 my $rules = read_vm_firewall_rules
($vmdata);
466 # print Dumper($vmdata);
468 my $swdir = '/etc/shorewall';
471 &$compile_shorewall($swdir, $vmdata, $rules);
473 PVE
::Tools
::run_command
(['shorewall', 'compile']);
476 sub compile_and_start
{
481 PVE
::Tools
::run_command
(['shorewall', $restart ?
'restart' : 'start']);