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
   9 # we need complete VM configuration of all VMs (openvz/qemu)
  10 # in vmdata
  11
  12 sub compile {
  13     my ($targetdir, $vmdata) = @_;
  14
  15     my $netinfo;
  16
  17     my $zoneinfo = {
  18         fw => { type => 'firewall' },
  19     };
  20
  21     my $register_bridge;
  22
  23     $register_bridge = sub {
  24         my ($bridge, $vlan) = @_;
  25
  26         my $zone =  'z' . $bridge;
  27
  28         return $zone if $zoneinfo->{$zone};
  29
  30         $zoneinfo->{$zone} = {
  31             type => 'bridge',
  32             bridge => $bridge,
  33         };
  34
  35         return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
  36
  37         return $zone;
  38     };
  39
  40     my $register_bridge_port = sub {
  41         my ($bridge, $vlan, $vmzone, $tap) = @_;
  42
  43         my $bridge_zone = &$register_bridge($bridge, $vlan);
  44         my $zone = $bridge_zone . $vmzone;
  45
  46         if (!$zoneinfo->{$zone}) {
  47             $zoneinfo->{$zone} = {
  48                 type => 'bport',
  49                 bridge_zone => $bridge_zone,
  50                 ifaces => {},
  51             };
  52         }
  53
  54         $zoneinfo->{$zone}->{ifaces}->{$tap} = 1;
  55
  56         return $zone;
  57     };
  58
  59     foreach my $vmid (keys %{$vmdata->{qemu}}) {
  60         $netinfo->{$vmid} = {};
  61         my $conf = $vmdata->{qemu}->{$vmid};
  62         foreach my $opt (keys %$conf) {
  63             next if $opt !~ m/^net(\d+)$/;
  64             my $netid = $1;
  65             my $net = PVE::QemuServer::parse_net($conf->{$opt});
  66             next if !$net;
  67             die "implement me" if !$net->{bridge};
  68
  69             my $vmzone = $conf->{zone} || "vm$vmid";
  70             $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, "tap${vmid}i${netid}");
  71             $netinfo->{$vmid}->{$netid} = $net;
  72         }
  73     }
  74
  75     #print Dumper($netinfo);
  76
  77     # NOTE: zone names have length limit, so we need to
  78     # translate them into shorter names
  79
  80     my $zoneid = 0;
  81     my $zonemap = { fw => 'fw' };
  82
  83     my $lookup_zonename = sub {
  84         my ($zone) = @_;
  85
  86         return $zonemap->{$zone} if defined($zonemap->{$zone});
  87         $zonemap->{$zone} = 'z' . $zoneid++;
  88
  89         return $zonemap->{$zone};
  90     };
  91
  92     # dump zone file
  93
  94     my $out;
  95
  96     my $format = "%-15s %-10s %s\n";
  97     $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS');
  98
  99     foreach my $z (sort keys %$zoneinfo) {
 100         my $zid = &$lookup_zonename($z);
 101         if ($zoneinfo->{$z}->{type} eq 'firewall') {
 102             $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '');
 103         } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
 104             $out .= sprintf($format, &$lookup_zonename($z), 'ipv4', '');
 105         } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
 106             my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
 107             my $bzid = &$lookup_zonename($bridge_zone);
 108             $out .= sprintf($format, "$zid:$bzid", 'bport', '');
 109         } else {
 110             die "internal error";
 111         }
 112     }
 113
 114     $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
 115
 116     PVE::Tools::file_set_contents("$targetdir/zones", $out);
 117
 118     # dump interfaces
 119
 120     $format = "%-15s %-20s %-10s %s\n";
 121     $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS');
 122
 123     foreach my $z (sort keys %$zoneinfo) {
 124         my $zid = &$lookup_zonename($z);
 125         if ($zoneinfo->{$z}->{type} eq 'firewall') {
 126             # do nothing;
 127         } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
 128             my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error";
 129             $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge');
 130
 131         } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
 132             my $ifaces = $zoneinfo->{$z}->{ifaces};
 133             foreach my $iface (sort keys %$ifaces) {
 134                 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
 135                 my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error";
 136                 my $iftxt = "$bridge:$iface";
 137                 $out .= sprintf($format, $zid, $iftxt, '', '');
 138             }
 139         } else {
 140             die "internal error";
 141         }
 142     }
 143
 144     $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
 145
 146     PVE::Tools::file_set_contents("$targetdir/interfaces", $out);
 147
 148     # dump policy
 149
 150     $format = "%-15s %-15s %-15s %s\n";
 151     $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
 152     $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
 153
 154     PVE::Tools::file_set_contents("$targetdir/policy", $out);
 155
 156
 157 }
 158
 159
 160 sub activate {
 161
 162 }
 163
 164
 165 1;