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