PVE/Firewall.pm

   1 package PVE::Firewall;
   2
   3 use warnings;
   4 use strict;
   5 use Data::Dumper;
   6 use PVE::Tools;
   7 use PVE::QemuServer;
   8 use File::Path;
   9 use IO::File;
  10 use Net::IP;
  11 use PVE::Tools qw(run_command);
  12
  13 use Data::Dumper;
  14
  15 my $macros;
  16 my @ruleset = ();
  17
  18 sub get_shorewall_macros {
  19
  20     return $macros if $macros;
  21
  22     foreach my $path (</usr/share/shorewall/macro.*>) {
  23         if ($path =~ m|/macro\.(\S+)$|) {
  24             $macros->{$1} = 1;
  25         }
  26     }
  27     return $macros;
  28 }
  29
  30 my $etc_services;
  31
  32 sub get_etc_services {
  33
  34     return $etc_services if $etc_services;
  35
  36     my $filename = "/etc/services";
  37
  38     my $fh = IO::File->new($filename, O_RDONLY);
  39     if (!$fh) {
  40         warn "unable to read '$filename' - $!\n";
  41         return {};
  42     }
  43
  44     my $services = {};
  45
  46     while (my $line = <$fh>) {
  47         chomp ($line);
  48         next if $line =~m/^#/;
  49         next if ($line =~m/^\s*$/);
  50
  51         if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
  52             $services->{byid}->{$2}->{name} = $1;
  53             $services->{byid}->{$2}->{$3} = 1;
  54             $services->{byname}->{$1} = $services->{byid}->{$2};
  55         }
  56     }
  57
  58     close($fh);
  59
  60     $etc_services = $services;
  61
  62
  63     return $etc_services;
  64 }
  65
  66 my $etc_protocols;
  67
  68 sub get_etc_protocols {
  69     return $etc_protocols if $etc_protocols;
  70
  71     my $filename = "/etc/protocols";
  72
  73     my $fh = IO::File->new($filename, O_RDONLY);
  74     if (!$fh) {
  75         warn "unable to read '$filename' - $!\n";
  76         return {};
  77     }
  78
  79     my $protocols = {};
  80
  81     while (my $line = <$fh>) {
  82         chomp ($line);
  83         next if $line =~m/^#/;
  84         next if ($line =~m/^\s*$/);
  85
  86         if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
  87             $protocols->{byid}->{$2}->{name} = $1;
  88             $protocols->{byname}->{$1} = $protocols->{byid}->{$2};
  89         }
  90     }
  91
  92     close($fh);
  93
  94     $etc_protocols = $protocols;
  95
  96     return $etc_protocols;
  97 }
  98
  99 sub parse_address_list {
 100     my ($str) = @_;
 101
 102     my $nbaor = 0;
 103     foreach my $aor (split(/,/, $str)) {
 104         if (!Net::IP->new($aor)) {
 105             my $err = Net::IP::Error();
 106             die "invalid IP address: $err\n";
 107         }else{
 108             $nbaor++;
 109         }
 110     }
 111     return $nbaor;
 112 }
 113
 114 sub parse_port_name_number_or_range {
 115     my ($str) = @_;
 116
 117     my $services = PVE::Firewall::get_etc_services();
 118     my $nbports = 0;
 119     foreach my $item (split(/,/, $str)) {
 120         my $portlist = "";
 121         foreach my $pon (split(':', $item, 2)) {
 122             if ($pon =~ m/^\d+$/){
 123                 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65536;
 124             }else{
 125                 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon};
 126             }
 127             $nbports++;
 128         }
 129     }
 130
 131     return ($nbports);
 132 }
 133
 134 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
 135
 136 sub iptables {
 137     my ($cmd) = @_;
 138
 139     run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {});
 140 }
 141
 142 sub iptables_restore {
 143
 144     unshift (@ruleset, '*filter');
 145     push (@ruleset, 'COMMIT');
 146
 147     my $cmdlist = join("\n", @ruleset);
 148
 149     run_command("echo '$cmdlist' | /sbin/iptables-restore -n", outfunc => sub {});
 150 }
 151
 152 sub iptables_addrule {
 153    my ($rule) = @_;
 154
 155    push (@ruleset, $rule);
 156 }
 157
 158 sub iptables_chain_exist {
 159     my ($chain) = @_;
 160
 161     eval{
 162         iptables("-n --list $chain");
 163     };
 164     return undef if $@;
 165
 166     return 1;
 167 }
 168
 169 sub iptables_rule_exist {
 170     my ($rule) = @_;
 171
 172     eval{
 173         iptables("-C $rule");
 174     };
 175     return undef if $@;
 176
 177     return 1;
 178 }
 179
 180 sub iptables_generate_rule {
 181     my ($chain, $rule) = @_;
 182
 183     my $cmd = "-A $chain";
 184
 185     $cmd .= " -m iprange --src-range" if $rule->{nbsource} && $rule->{nbsource} > 1;
 186     $cmd .= " -s $rule->{source}" if $rule->{source};
 187     $cmd .= " -m iprange --dst-range" if $rule->{nbdest} && $rule->{nbdest} > 1;
 188     $cmd .= " -d $rule->{dest}" if $rule->{destination};
 189     $cmd .= " -p $rule->{proto}" if $rule->{proto};
 190     $cmd .= "  --match multiport" if $rule->{nbdport} && $rule->{nbdport} > 1;
 191     $cmd .= " --dport $rule->{dport}" if $rule->{dport};
 192     $cmd .= "  --match multiport" if $rule->{nbsport} && $rule->{nbsport} > 1;
 193     $cmd .= " --sport $rule->{sport}" if $rule->{sport};
 194     $cmd .= " -j $rule->{action}" if $rule->{action};
 195
 196     iptables_addrule($cmd);
 197
 198 }
 199
 200 sub generate_bridge_rules {
 201     my ($bridge) = @_;
 202
 203     if(!iptables_chain_exist("BRIDGEFW-OUT")){
 204         iptables_addrule(":BRIDGEFW-OUT - [0:0]");
 205     }
 206
 207     if(!iptables_chain_exist("BRIDGEFW-IN")){
 208         iptables_addrule(":BRIDGEFW-IN - [0:0]");
 209     }
 210
 211     if(!iptables_chain_exist("proxmoxfw-FORWARD")){
 212         iptables_addrule(":proxmoxfw-FORWARD - [0:0]");
 213         iptables_addrule("-I FORWARD -j proxmoxfw-FORWARD");
 214         iptables_addrule("-A proxmoxfw-FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT");
 215         iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-in --physdev-is-bridged -j BRIDGEFW-OUT");
 216         iptables_addrule("-A proxmoxfw-FORWARD -m physdev --physdev-is-out --physdev-is-bridged -j BRIDGEFW-IN");
 217
 218     }
 219
 220     generate_proxmoxfwinput();
 221
 222     if(!iptables_chain_exist("$bridge-IN")){
 223         iptables_addrule(":$bridge-IN - [0:0]");
 224         iptables_addrule("-A proxmoxfw-FORWARD -i $bridge -j DROP");  #disable interbridge routing
 225         iptables_addrule("-A BRIDGEFW-IN -j $bridge-IN");
 226         iptables_addrule("-A $bridge-IN -j ACCEPT");
 227
 228     }
 229
 230     if(!iptables_chain_exist("$bridge-OUT")){
 231         iptables_addrule(":$bridge-OUT - [0:0]");
 232         iptables_addrule("-A proxmoxfw-FORWARD -o $bridge -j DROP"); # disable interbridge routing
 233         iptables_addrule("-A BRIDGEFW-OUT -j $bridge-OUT");
 234
 235     }
 236
 237 }
 238
 239
 240 sub generate_tap_rules_direction {
 241     my ($iface, $netid, $rules, $bridge, $direction) = @_;
 242
 243     my $tapchain = "$iface-$direction";
 244
 245     iptables_addrule(":$tapchain - [0:0]");
 246
 247     iptables_addrule("-A $tapchain -m state --state INVALID -j DROP");
 248     iptables_addrule("-A $tapchain -m state --state RELATED,ESTABLISHED -j ACCEPT");
 249
 250     if (scalar(@$rules)) {
 251         foreach my $rule (@$rules) {
 252             next if $rule->{iface} && $rule->{iface} ne $netid;
 253             if($rule->{action}  =~ m/^(GROUP-(\S+))$/){
 254                     $rule->{action} .= "-$direction";
 255                     #generate empty group rule if don't exist
 256                     if(!iptables_chain_exist($rule->{action})){
 257                         generate_group_rules($2);
 258                     }
 259             }
 260             #we go to vmbr-IN if accept in out rules
 261             $rule->{action} = "$bridge-IN" if $rule->{action} eq 'ACCEPT' && $direction eq 'OUT';
 262             iptables_generate_rule($tapchain, $rule);
 263         }
 264     }
 265
 266     iptables_addrule("-A $tapchain -j LOG --log-prefix \"$tapchain-dropped: \" --log-level 4");
 267     iptables_addrule("-A $tapchain -j DROP");
 268
 269     #plug the tap chain to bridge chain
 270     my $physdevdirection = $direction eq 'IN' ? "out":"in";
 271     my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
 272
 273     if(!iptables_rule_exist($rule)){
 274         iptables_addrule("-I $rule");
 275     }
 276
 277     if($direction eq 'OUT'){
 278         #add tap->host rules
 279         my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain";
 280
 281         if(!iptables_rule_exist($rule)){
 282             iptables_addrule("-A $rule");
 283         }
 284     }
 285 }
 286
 287 sub generate_tap_rules {
 288     my ($net, $netid, $vmid) = @_;
 289
 290     my $filename = "/etc/pve/firewall/$vmid.fw";
 291     my $fh = IO::File->new($filename, O_RDONLY);
 292     return if !$fh;
 293
 294     #generate bridge rules
 295     my $bridge = $net->{bridge};
 296     my $tag = $net->{tag};
 297     $bridge .= "v$tag" if $tag;
 298
 299     #generate tap chain
 300     my $rules = parse_fw_rules($filename, $fh);
 301
 302     my $inrules = $rules->{in};
 303     my $outrules = $rules->{out};
 304
 305     my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/;
 306
 307     generate_bridge_rules($bridge);
 308     generate_tap_rules_direction($iface, $netid, $inrules, $bridge, 'IN');
 309     generate_tap_rules_direction($iface, $netid, $outrules, $bridge, 'OUT');
 310     iptables_restore();
 311 }
 312
 313 sub flush_tap_rules {
 314     my ($net, $netid, $vmid) = @_;
 315
 316     my $bridge = $net->{bridge};
 317     my $iface = "tap".$vmid."i".$1 if $netid =~ m/net(\d+)/;
 318
 319     flush_tap_rules_direction($iface, $bridge, 'IN');
 320     flush_tap_rules_direction($iface, $bridge, 'OUT');
 321     iptables_restore();
 322 }
 323
 324 sub flush_tap_rules_direction {
 325     my ($iface, $bridge, $direction) = @_;
 326
 327     my $tapchain = "$iface-$direction";
 328
 329     if(iptables_chain_exist($tapchain)){
 330         iptables_addrule("-F $tapchain");
 331
 332         my $physdevdirection = $direction eq 'IN' ? "out":"in";
 333         my $rule = "$bridge-$direction -m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
 334         if(iptables_rule_exist($rule)){
 335             iptables_addrule("-D $rule");
 336         }
 337
 338         if($direction eq 'OUT'){
 339             my $rule = "proxmoxfw-INPUT -m physdev --physdev-$physdevdirection $iface -j $tapchain";
 340
 341             if(!iptables_rule_exist($rule)){
 342                 iptables_addrule("-D $rule");
 343             }
 344         }
 345
 346         iptables_addrule("-X $tapchain");
 347     }
 348 }
 349
 350 my $generate_input_rule = sub {
 351     my ($zoneinfo, $rule, $net, $netid) = @_;
 352
 353     my $zone = $net->{zone} || die "internal error";
 354     my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error";
 355     my $tap = $net->{tap} || die "internal error";
 356
 357     my $dest = "$zid:$tap";
 358
 359     if ($rule->{dest}) {
 360         $dest .= ":$rule->{dest}";
 361     }
 362
 363     my $action = $rule->{service} ?
 364         "$rule->{service}($rule->{action})" : $rule->{action};
 365
 366     my $sources = [];
 367
 368     if (!$rule->{source}) {
 369         push @$sources, 'all';
 370     } elsif ($zoneinfo->{$zone}->{type} eq 'bport') {
 371         my $bridge_zone = $zoneinfo->{$zone}->{bridge_zone} || die "internal error";
 372         my $zoneref = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error";
 373
 374         # using 'all' does not work, so we create one rule for
 375         # each related zone on the same bridge
 376         push @$sources, "${zoneref}:$rule->{source}";
 377         foreach my $z (keys %$zoneinfo) {
 378             next if $z eq $zone;
 379             next if !$zoneinfo->{$z}->{bridge_zone};
 380             next if $zoneinfo->{$z}->{bridge_zone} ne $bridge_zone;
 381             $zoneref = $zoneinfo->{$z}->{zoneref} || die "internal error";
 382             push @$sources, "${zoneref}:$rule->{source}";
 383         }
 384     } else {
 385         push @$sources, "all:$rule->{source}";
 386     }
 387
 388     my $out = '';
 389
 390     foreach my $source (@$sources) {
 391         $out .= sprintf($rule_format, $action, $source, $dest, $rule->{proto} || '-',
 392                         $rule->{dport} || '-', $rule->{sport} || '-');
 393     }
 394
 395     return $out;
 396 };
 397
 398 my $generate_output_rule = sub {
 399     my ($zoneinfo, $rule, $net, $netid) = @_;
 400
 401     my $zone = $net->{zone} || die "internal error";
 402     my $zid = $zoneinfo->{$zone}->{zoneref} || die "internal error";
 403     my $tap = $net->{tap} || die "internal error";
 404
 405     my $action = $rule->{service} ?
 406         "$rule->{service}($rule->{action})" : $rule->{action};
 407
 408     my $dest;
 409
 410     if (!$rule->{dest}) {
 411         $dest = 'all';
 412     } else {
 413         $dest = "all:$rule->{dest}";
 414     }
 415
 416     return sprintf($rule_format, $action, "$zid:$tap", $dest,
 417                    $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-');
 418 };
 419
 420 # we need complete VM configuration of all VMs (openvz/qemu)
 421 # in vmdata
 422
 423 my $compile_shorewall = sub {
 424     my ($targetdir, $vmdata, $rules) = @_;
 425
 426     # remove existing data ?
 427     foreach my $file (qw(params zones rules interfaces  maclist  policy)) {
 428         unlink "$targetdir/$file";
 429     }
 430
 431     my $netinfo;
 432
 433     my $zoneinfo = {
 434         fw => { type => 'firewall' },
 435     };
 436
 437     my $maclist = {};
 438
 439     my $register_bridge;
 440
 441     $register_bridge = sub {
 442         my ($bridge, $vlan) = @_;
 443
 444         my $zone =  $bridge;
 445
 446         return $zone if $zoneinfo->{$zone};
 447
 448         my $ext_zone = "${bridge}_ext";
 449
 450         $zoneinfo->{$zone} = {
 451             type => 'bridge',
 452             bridge => $bridge,
 453             bridge_ext_zone => $ext_zone,
 454         };
 455
 456         # physical input devices
 457         my $dir = "/sys/class/net/$bridge/brif";
 458         my $physical = {};
 459         PVE::Tools::dir_glob_foreach($dir, '((eth|bond).+)', sub {
 460             my ($slave) = @_;
 461             $physical->{$slave} = 1;
 462         });
 463
 464         $zoneinfo->{$ext_zone} = {
 465             type => 'bport',
 466             bridge_zone => $zone,
 467             ifaces => $physical,
 468         };
 469
 470         return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
 471
 472         return $zone;
 473     };
 474
 475     my $register_bridge_port = sub {
 476         my ($bridge, $vlan, $vmzone, $tap) = @_;
 477
 478         my $bridge_zone = &$register_bridge($bridge, $vlan);
 479         my $zone = $bridge_zone . '_' . $vmzone;
 480
 481         if (!$zoneinfo->{$zone}) {
 482             $zoneinfo->{$zone} = {
 483                 type => 'bport',
 484                 bridge_zone => $bridge_zone,
 485                 ifaces => {},
 486             };
 487         }
 488
 489         $zoneinfo->{$zone}->{ifaces}->{$tap} = 1;
 490
 491         return $zone;
 492     };
 493
 494     foreach my $vmid (keys %{$vmdata->{qemu}}) {
 495         $netinfo->{$vmid} = {};
 496         my $conf = $vmdata->{qemu}->{$vmid};
 497         foreach my $opt (keys %$conf) {
 498             next if $opt !~ m/^net(\d+)$/;
 499             my $netnum = $1;
 500             my $net = PVE::QemuServer::parse_net($conf->{$opt});
 501             next if !$net;
 502             die "implement me" if !$net->{bridge};
 503
 504             my $vmzone = $conf->{zone} || "vm$vmid";
 505             $net->{tap} = "tap${vmid}i${netnum}";
 506             $maclist->{$net->{tap}} = $net->{macaddr} || die "internal error";
 507             $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap});
 508             $netinfo->{$vmid}->{$opt} = $net;
 509         }
 510     }
 511
 512     #print Dumper($netinfo);
 513
 514     # NOTE: zone names have length limit, so we need to
 515     # translate them into shorter names
 516
 517     my $zoneid = 0;
 518     my $zonemap = { fw => 'fw' };
 519
 520     my $lookup_zonename = sub {
 521         my ($zone) = @_;
 522
 523         return $zonemap->{$zone} if defined($zonemap->{$zone});
 524         $zonemap->{$zone} = 'z' . $zoneid++;
 525
 526         return $zonemap->{$zone};
 527     };
 528
 529     foreach my $z (sort keys %$zoneinfo) {
 530         $zoneinfo->{$z}->{id} = &$lookup_zonename($z);
 531         $zoneinfo->{$z}->{zonevar} = uc($z);
 532         $zoneinfo->{$z}->{zoneref} = '$' . $zoneinfo->{$z}->{zonevar};
 533     }
 534
 535     my $out;
 536
 537     # dump params file
 538     $out = "# PVE zones\n";
 539     foreach my $z (sort keys %$zoneinfo) {
 540         $out .= "$zoneinfo->{$z}->{zonevar}=$zoneinfo->{$z}->{id}\n";
 541     }
 542     PVE::Tools::file_set_contents("$targetdir/params", $out);
 543
 544     # dump zone file
 545
 546     my $format = "%-30s %-10s %-15s\n";
 547     $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
 548
 549     foreach my $z (sort keys %$zoneinfo) {
 550         my $zid = $zoneinfo->{$z}->{zoneref};
 551         if ($zoneinfo->{$z}->{type} eq 'firewall') {
 552             $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '');
 553         } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
 554             $out .= sprintf($format, $zid, 'ipv4', '');
 555         } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
 556             my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
 557             my $bzid = $zoneinfo->{$bridge_zone}->{zoneref} || die "internal error";
 558             $out .= sprintf($format, "$zid:$bzid", 'bport', '');
 559         } else {
 560             die "internal error";
 561         }
 562     }
 563
 564     $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
 565
 566     PVE::Tools::file_set_contents("$targetdir/zones", $out);
 567
 568     # dump interfaces
 569
 570     $format = "%-25s %-20s %-10s %-15s\n";
 571     $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS');
 572
 573     my $maclist_format = "%-15s %-15s %-15s\n";
 574     my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
 575
 576     foreach my $z (sort keys %$zoneinfo) {
 577         my $zid = $zoneinfo->{$z}->{zoneref};
 578         if ($zoneinfo->{$z}->{type} eq 'firewall') {
 579             # do nothing;
 580         } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
 581             my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error";
 582             $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge,optional');
 583         } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
 584             my $ifaces = $zoneinfo->{$z}->{ifaces};
 585             foreach my $iface (sort keys %$ifaces) {
 586                 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
 587                 my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error";
 588                 my $iftxt = "$bridge:$iface";
 589
 590                 if ($maclist->{$iface}) {
 591                     $out .= sprintf($format, $zid, $iftxt, '-', 'maclist');
 592                     $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
 593                 } else {
 594                     $out .= sprintf($format, $zid, $iftxt, '-', '');
 595                 }
 596             }
 597         } else {
 598             die "internal error";
 599         }
 600     }
 601
 602     $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
 603
 604     PVE::Tools::file_set_contents("$targetdir/interfaces", $out);
 605
 606     # dump maclist
 607     PVE::Tools::file_set_contents("$targetdir/maclist", $macs);
 608
 609     # dump policy
 610
 611     $format = "%-15s %-15s %-15s %s\n";
 612     $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
 613     $out .= sprintf($format, 'fw', 'all', 'ACCEPT', '');
 614
 615     # we need to disable intra-zone traffic on bridges. Else traffic
 616     # from untracked interfaces simply pass the firewall
 617     foreach my $z (sort keys %$zoneinfo) {
 618         my $zid = $zoneinfo->{$z}->{zoneref};
 619         if ($zoneinfo->{$z}->{type} eq 'bridge') {
 620             $out .= sprintf($format, $zid, $zid, 'REJECT', 'info');
 621         }
 622     }
 623     $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
 624
 625     PVE::Tools::file_set_contents("$targetdir/policy", $out);
 626
 627     # dump rules
 628     $out = '';
 629
 630     $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
 631     foreach my $vmid (sort keys %$rules) {
 632         my $inrules = $rules->{$vmid}->{in};
 633         my $outrules = $rules->{$vmid}->{out};
 634
 635         if (scalar(@$inrules)) {
 636             $out .= "# IN to VM $vmid\n";
 637             foreach my $rule (@$inrules) {
 638                 foreach my $netid (keys %{$netinfo->{$vmid}}) {
 639                     my $net = $netinfo->{$vmid}->{$netid};
 640                     next if $rule->{iface} && $rule->{iface} ne $netid;
 641                     $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
 642                 }
 643             }
 644         }
 645
 646         if (scalar(@$outrules)) {
 647             $out .= "# OUT from VM $vmid\n";
 648             foreach my $rule (@$outrules) {
 649                 foreach my $netid (keys %{$netinfo->{$vmid}}) {
 650                     my $net = $netinfo->{$vmid}->{$netid};
 651                     next if $rule->{iface} && $rule->{iface} ne $netid;
 652                     $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
 653                 }
 654             }
 655         }
 656     }
 657
 658     PVE::Tools::file_set_contents("$targetdir/rules", $out);
 659 };
 660
 661
 662 sub parse_fw_rules {
 663     my ($filename, $fh) = @_;
 664
 665     my $section;
 666
 667     my $res = { in => [], out => [] };
 668
 669     my $macros = get_shorewall_macros();
 670     my $protocols = get_etc_protocols();
 671
 672     while (defined(my $line = <$fh>)) {
 673         next if $line =~ m/^#/;
 674         next if $line =~ m/^\s*$/;
 675
 676         if ($line =~ m/^\[(in|out)\]\s*$/i) {
 677             $section = lc($1);
 678             next;
 679         }
 680         next if !$section;
 681
 682         my ($action, $iface, $source, $dest, $proto, $dport, $sport) =
 683             split(/\s+/, $line);
 684
 685         if (!$action) {
 686             warn "skip incomplete line\n";
 687             next;
 688         }
 689
 690         my $service;
 691         if ($action =~ m/^(ACCEPT|DROP|REJECT|GROUP-(\S+))$/) {
 692             # OK
 693         } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
 694             ($service, $action) = ($1, $2);
 695             if (!$macros->{$service}) {
 696                 warn "unknown service '$service'\n";
 697                 next;
 698             }
 699         } else {
 700             warn "unknown action '$action'\n";
 701             next;
 702         }
 703
 704         $iface = undef if $iface && $iface eq '-';
 705         if ($iface && $iface !~ m/^(net0|net1|net2|net3|net4|net5)$/) {
 706             warn "unknown interface '$iface'\n";
 707             next;
 708         }
 709
 710         $proto = undef if $proto && $proto eq '-';
 711         if ($proto && !(defined($protocols->{byname}->{$proto}) ||
 712                         defined($protocols->{byid}->{$proto}))) {
 713             warn "unknown protokol '$proto'\n";
 714             next;
 715         }
 716
 717         $source = undef if $source && $source eq '-';
 718         $dest = undef if $dest && $dest eq '-';
 719
 720         $dport = undef if $dport && $dport eq '-';
 721         $sport = undef if $sport && $sport eq '-';
 722         my $nbdport = undef;
 723         my $nbsport = undef;
 724         my $nbsource = undef;
 725         my $nbdest = undef;
 726
 727         eval {
 728             $nbsource = parse_address_list($source) if $source;
 729             $nbdest = parse_address_list($dest) if $dest;
 730             $nbdport = parse_port_name_number_or_range($dport) if $dport;
 731             $nbsport = parse_port_name_number_or_range($sport) if $sport;
 732         };
 733         if (my $err = $@) {
 734             warn $err;
 735             next;
 736
 737         }
 738
 739
 740         my $rule = {
 741             action => $action,
 742             service => $service,
 743             iface => $iface,
 744             source => $source,
 745             dest => $dest,
 746             nbsource => $nbsource,
 747             nbdest => $nbdest,
 748             proto => $proto,
 749             dport => $dport,
 750             sport => $sport,
 751             nbdport => $nbdport,
 752             nbsport => $nbsport,
 753
 754         };
 755
 756         push @{$res->{$section}}, $rule;
 757     }
 758
 759     return $res;
 760 }
 761
 762 sub read_local_vm_config {
 763
 764     my $openvz = {};
 765
 766     my $qemu = {};
 767
 768     my $list = PVE::QemuServer::config_list();
 769
 770     foreach my $vmid (keys %$list) {
 771         #next if !($vmid eq '100' || $vmid eq '102');
 772         my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
 773         if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
 774             $qemu->{$vmid} = $conf;
 775         }
 776     }
 777
 778     my $vmdata = { openvz => $openvz, qemu => $qemu };
 779
 780     return $vmdata;
 781 };
 782
 783 sub read_vm_firewall_rules {
 784     my ($vmdata) = @_;
 785     my $rules = {};
 786     foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
 787         my $filename = "/etc/pve/firewall/$vmid.fw";
 788         my $fh = IO::File->new($filename, O_RDONLY);
 789         next if !$fh;
 790
 791         $rules->{$vmid} = parse_fw_rules($filename, $fh);
 792     }
 793
 794     return $rules;
 795 }
 796
 797 sub compile {
 798
 799     my $vmdata = read_local_vm_config();
 800     my $rules = read_vm_firewall_rules($vmdata);
 801
 802     # print Dumper($vmdata);
 803
 804     my $swdir = '/etc/shorewall';
 805     mkdir $swdir;
 806
 807     &$compile_shorewall($swdir, $vmdata, $rules);
 808
 809     PVE::Tools::run_command(['shorewall', 'compile']);
 810 }
 811
 812 sub compile_and_start {
 813     my ($restart) = @_;
 814
 815     compile();
 816
 817     PVE::Tools::run_command(['shorewall', $restart ? 'restart' : 'start']);
 818 }
 819
 820
 821 1;