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
  10 my $rule_format = "%-15s %-15s %-15s %-15s %-15s %-15s\n";
  11
  12 my $generate_input_rule = sub {
  13     my ($zoneinfo, $rule, $net, $netid) = @_;
  14
  15     die "not implemented" if $rule->{source} ne 'any';
  16     die "not implemented" if $rule->{dest} ne 'any';
  17
  18     my $zone = $net->{zone} || die "internal error";
  19     my $zid = $zoneinfo->{$zone}->{id} || die "internal error";
  20     my $tap = $net->{tap} || die "internal error";
  21
  22     return sprintf($rule_format, $rule->{action}, $rule->{source}, "$zid:$tap",
  23                    $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-');
  24 };
  25
  26 my $generate_output_rule = sub {
  27     my ($zoneinfo, $rule, $net, $netid) = @_;
  28
  29     die "not implemented" if $rule->{source} ne 'any';
  30     die "not implemented" if $rule->{dest} ne 'any';
  31
  32     my $zone = $net->{zone} || die "internal error";
  33     my $zid = $zoneinfo->{$zone}->{id} || die "internal error";
  34     my $tap = $net->{tap} || die "internal error";
  35
  36     return sprintf($rule_format, $rule->{action}, "$zid:$tap", $rule->{dest},
  37                    $rule->{proto} || '-', $rule->{dport} || '-', $rule->{sport} || '-');
  38 };
  39
  40 # we need complete VM configuration of all VMs (openvz/qemu)
  41 # in vmdata
  42
  43 sub compile {
  44     my ($targetdir, $vmdata, $rules) = @_;
  45
  46     my $netinfo;
  47
  48     my $zoneinfo = {
  49         fw => { type => 'firewall' },
  50     };
  51
  52     my $maclist = {};
  53
  54     my $register_bridge;
  55
  56     $register_bridge = sub {
  57         my ($bridge, $vlan) = @_;
  58
  59         my $zone =  'z' . $bridge;
  60
  61         return $zone if $zoneinfo->{$zone};
  62
  63         $zoneinfo->{$zone} = {
  64             type => 'bridge',
  65             bridge => $bridge,
  66         };
  67
  68         return &$register_bridge("${bridge}v${vlan}") if defined($vlan);
  69
  70         return $zone;
  71     };
  72
  73     my $register_bridge_port = sub {
  74         my ($bridge, $vlan, $vmzone, $tap) = @_;
  75
  76         my $bridge_zone = &$register_bridge($bridge, $vlan);
  77         my $zone = $bridge_zone . $vmzone;
  78
  79         if (!$zoneinfo->{$zone}) {
  80             $zoneinfo->{$zone} = {
  81                 type => 'bport',
  82                 bridge_zone => $bridge_zone,
  83                 ifaces => {},
  84             };
  85         }
  86
  87         $zoneinfo->{$zone}->{ifaces}->{$tap} = 1;
  88
  89         return $zone;
  90     };
  91
  92     foreach my $vmid (keys %{$vmdata->{qemu}}) {
  93         $netinfo->{$vmid} = {};
  94         my $conf = $vmdata->{qemu}->{$vmid};
  95         foreach my $opt (keys %$conf) {
  96             next if $opt !~ m/^net(\d+)$/;
  97             my $netnum = $1;
  98             my $net = PVE::QemuServer::parse_net($conf->{$opt});
  99             next if !$net;
 100             die "implement me" if !$net->{bridge};
 101
 102             my $vmzone = $conf->{zone} || "vm$vmid";
 103             $net->{tap} = "tap${vmid}i${netnum}";
 104             $maclist->{$net->{tap}} = $net->{macaddr} || die "internal error";
 105             $net->{zone} = &$register_bridge_port($net->{bridge}, $net->{tag}, $vmzone, $net->{tap});
 106             $netinfo->{$vmid}->{$opt} = $net;
 107         }
 108     }
 109
 110     #print Dumper($netinfo);
 111
 112     # NOTE: zone names have length limit, so we need to
 113     # translate them into shorter names
 114
 115     my $zoneid = 0;
 116     my $zonemap = { fw => 'fw' };
 117
 118     my $lookup_zonename = sub {
 119         my ($zone) = @_;
 120
 121         return $zonemap->{$zone} if defined($zonemap->{$zone});
 122         $zonemap->{$zone} = 'z' . $zoneid++;
 123
 124         return $zonemap->{$zone};
 125     };
 126
 127     foreach my $z (sort keys %$zoneinfo) {
 128         $zoneinfo->{$z}->{id} = &$lookup_zonename($z);
 129     }
 130
 131     # dump zone file
 132
 133     my $out;
 134
 135     my $format = "%-15s %-10s %-15s %s\n";
 136     $out = sprintf($format, '#ZONE', 'TYPE', 'OPTIONS', '');
 137
 138     foreach my $z (sort keys %$zoneinfo) {
 139         my $zid = $zoneinfo->{$z}->{id};
 140         if ($zoneinfo->{$z}->{type} eq 'firewall') {
 141             $out .= sprintf($format, $zid, $zoneinfo->{$z}->{type}, '' , "# $z");
 142         } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
 143             $out .= sprintf($format, $zid, 'ipv4', '', "# $z");
 144         } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
 145             my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
 146             my $bzid = $zoneinfo->{$bridge_zone}->{id} || die "internal error";
 147             $out .= sprintf($format, "$zid:$bzid", 'bport', '', "# $z");
 148         } else {
 149             die "internal error";
 150         }
 151     }
 152
 153     $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
 154
 155     PVE::Tools::file_set_contents("$targetdir/zones", $out);
 156
 157     # dump interfaces
 158
 159     $format = "%-15s %-20s %-10s %-15s %s\n";
 160     $out = sprintf($format, '#ZONE', 'INTERFACE', 'BROADCAST', 'OPTIONS', '');
 161
 162     my $maclist_format = "%-15s %-15s %-15s\n";
 163     my $macs = sprintf($maclist_format, '#DISPOSITION', 'INTERFACE', 'MACZONE');
 164
 165     foreach my $z (sort keys %$zoneinfo) {
 166         my $zid = $zoneinfo->{$z}->{id};
 167         if ($zoneinfo->{$z}->{type} eq 'firewall') {
 168             # do nothing;
 169         } elsif ($zoneinfo->{$z}->{type} eq 'bridge') {
 170             my $bridge = $zoneinfo->{$z}->{bridge} || die "internal error";
 171             $out .= sprintf($format, $zid, $bridge, 'detect', 'bridge', "# $z");
 172
 173         } elsif ($zoneinfo->{$z}->{type} eq 'bport') {
 174             my $ifaces = $zoneinfo->{$z}->{ifaces};
 175             foreach my $iface (sort keys %$ifaces) {
 176                 my $bridge_zone = $zoneinfo->{$z}->{bridge_zone} || die "internal error";
 177                 my $bridge = $zoneinfo->{$bridge_zone}->{bridge} || die "internal error";
 178                 my $iftxt = "$bridge:$iface";
 179                 $out .= sprintf($format, $zid, $iftxt, '-', 'maclist', "# $z");
 180                 $macs .= sprintf($maclist_format, 'ACCEPT', $iface, $maclist->{$iface});
 181             }
 182         } else {
 183             die "internal error";
 184         }
 185     }
 186
 187     $out .= sprintf("#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE\n");
 188
 189     PVE::Tools::file_set_contents("$targetdir/interfaces", $out);
 190
 191     # dump maclist
 192     PVE::Tools::file_set_contents("$targetdir/maclist", $macs);
 193
 194     # dump policy
 195
 196     $format = "%-15s %-15s %-15s %s\n";
 197     $out = sprintf($format, '#SOURCE', 'DEST', 'POLICY', 'LOG');
 198     $out .= sprintf($format, 'all', 'all', 'REJECT', 'info');
 199
 200     PVE::Tools::file_set_contents("$targetdir/policy", $out);
 201
 202     # dump rules
 203     $out = '';
 204
 205     $out = sprintf($rule_format, '#ACTION', 'SOURCE', 'DEST', 'PROTO', 'DPORT', 'SPORT');
 206     foreach my $vmid (sort keys %$rules) {
 207         if (my $inrules = $rules->{$vmid}->{in}) {
 208             foreach my $rule (@$inrules) {
 209                 foreach my $netid (keys %{$netinfo->{$vmid}}) {
 210                     my $net = $netinfo->{$vmid}->{$netid};
 211                     next if !($rule->{iface} eq 'any' || $rule->{iface} eq $netid);
 212                     $out .= &$generate_input_rule($zoneinfo, $rule, $net, $netid);
 213                 }
 214             }
 215         }
 216
 217         if (my $outrules = $rules->{$vmid}->{out}) {
 218             foreach my $rule (@$outrules) {
 219                 foreach my $netid (keys %{$netinfo->{$vmid}}) {
 220                     my $net = $netinfo->{$vmid}->{$netid};
 221                     next if !($rule->{iface} eq 'any' || $rule->{iface} eq $netid);
 222                     $out .= &$generate_output_rule($zoneinfo, $rule, $net, $netid);
 223                 }
 224             }
 225         }
 226     }
 227
 228     PVE::Tools::file_set_contents("$targetdir/rules", $out);
 229
 230 }
 231
 232
 233 sub activate {
 234
 235 }
 236
 237
 238 1;