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