PVE/Network/SDN/SubnetPlugin.pm

   1 package PVE::Network::SDN::SubnetPlugin;
   2
   3 use strict;
   4 use warnings;
   5
   6 use Net::IP;
   7 use Net::Subnet qw(subnet_matcher);
   8
   9 use PVE::Cluster qw(cfs_read_file cfs_write_file cfs_lock_file);
  10 use PVE::Exception qw(raise raise_param_exc);
  11 use PVE::JSONSchema qw(get_standard_option);
  12 use PVE::Network::SDN::Ipams;
  13 use PVE::Network::SDN::Vnets;
  14
  15 use base qw(PVE::SectionConfig);
  16
  17 PVE::Cluster::cfs_register_file('sdn/subnets.cfg',
  18                                  sub { __PACKAGE__->parse_config(@_); },
  19                                  sub { __PACKAGE__->write_config(@_); });
  20
  21 PVE::JSONSchema::register_standard_option('pve-sdn-subnet-id', {
  22     description => "The SDN subnet object identifier.",
  23     type => 'string', format => 'pve-sdn-subnet-id',
  24     type => 'string'
  25 });
  26
  27 PVE::JSONSchema::register_format('pve-sdn-subnet-id', \&parse_sdn_subnet_id);
  28 sub parse_sdn_subnet_id {
  29     my ($id, $noerr) = @_;
  30
  31     my $cidr = "";
  32     if($id =~ /\//) {
  33         $cidr = $id;
  34     } else {
  35         my ($zone, $ip, $mask) = split(/-/, $id);
  36         $cidr = "$ip/$mask";
  37     }
  38
  39     if (!(PVE::JSONSchema::pve_verify_cidrv4($cidr, 1) ||
  40           PVE::JSONSchema::pve_verify_cidrv6($cidr, 1)))
  41     {
  42         return undef if $noerr;
  43         die "value does not look like a valid CIDR network\n";
  44     }
  45     return $id;
  46 }
  47
  48 my $defaultData = {
  49
  50     propertyList => {
  51         subnet => get_standard_option('pve-sdn-subnet-id',
  52             { completion => \&PVE::Network::SDN::Subnets::complete_sdn_subnet }),
  53     },
  54 };
  55
  56 sub type {
  57     return 'subnet';
  58 }
  59
  60 sub private {
  61     return $defaultData;
  62 }
  63
  64 sub properties {
  65     return {
  66         vnet => {
  67             type => 'string',
  68             description => "associated vnet",
  69         },
  70         gateway => {
  71             type => 'string', format => 'ip',
  72             description => "Subnet Gateway: Will be assign on vnet for layer3 zones",
  73         },
  74         snat => {
  75             type => 'boolean',
  76             description => "enable masquerade for this subnet if pve-firewall",
  77         },
  78 #       #cloudinit, dhcp options
  79 #        routes => {
  80 #            type => 'string',
  81 #            description => "static routes [network=<network>:gateway=<ip>,network=<network>:gateway=<ip>,... ]",
  82 #        },
  83         dnszoneprefix => {
  84             type => 'string', format => 'dns-name',
  85             description => "dns domain zone prefix  ex: 'adm' -> <hostname>.adm.mydomain.com",
  86         },
  87     };
  88 }
  89
  90 sub options {
  91     return {
  92         vnet => { optional => 0 },
  93         gateway => { optional => 1 },
  94 #       routes => { optional => 1 },
  95         snat => { optional => 1 },
  96         dnszoneprefix => { optional => 1 },
  97     };
  98 }
  99
 100 sub on_update_hook {
 101     my ($class, $zone, $subnetid, $subnet, $old_subnet) = @_;
 102
 103     my $cidr = $subnet->{cidr};
 104     my $mask = $subnet->{mask};
 105
 106     my $subnet_matcher = subnet_matcher($cidr);
 107
 108     my $vnetid = $subnet->{vnet};
 109     my $gateway = $subnet->{gateway};
 110     my $ipam = $zone->{ipam};
 111     my $dns = $zone->{dns};
 112     my $dnszone = $zone->{dnszone};
 113     my $reversedns = $zone->{reversedns};
 114
 115     my $old_gateway = $old_subnet->{gateway} if $old_subnet;
 116     my $mac = undef;
 117
 118     if($vnetid) {
 119         my $vnet = PVE::Network::SDN::Vnets::get_vnet($vnetid);
 120         raise_param_exc({ vnet => "$vnetid don't exist"}) if !$vnet;
 121         raise_param_exc({ vnet => "you can't add a subnet on a vlanaware vnet"}) if $vnet->{vlanaware};
 122         $mac = $vnet->{mac};
 123     }
 124
 125     my $pointopoint = 1 if Net::IP::ip_is_ipv4($gateway) && $mask == 32;
 126
 127     #for /32 pointopoint, we allow gateway outside the subnet
 128     raise_param_exc({ gateway => "$gateway is not in subnet $cidr"}) if $gateway && !$subnet_matcher->($gateway) && !$pointopoint;
 129
 130
 131     if ($ipam) {
 132         PVE::Network::SDN::Subnets::add_subnet($zone, $subnetid, $subnet);
 133
 134         #don't register gateway for pointopoint
 135         return if $pointopoint;
 136
 137         #delete gateway on removal
 138         if (!defined($gateway) && $old_gateway) {
 139             eval {
 140                 PVE::Network::SDN::Subnets::del_ip($zone, $subnetid, $old_subnet, $old_gateway);
 141             };
 142             warn if $@;
 143         }
 144         if(!$old_gateway || $gateway && $gateway ne $old_gateway) {
 145             my $hostname = "$vnetid-gw";
 146             my $description = "gateway";
 147             PVE::Network::SDN::Subnets::add_ip($zone, $subnetid, $subnet, $gateway, $hostname, $mac, $description, 1);
 148         }
 149
 150         #delete old gateway after update
 151         if($gateway && $old_gateway && $gateway ne $old_gateway) {
 152             eval {
 153                 PVE::Network::SDN::Subnets::del_ip($zone, $subnetid, $old_subnet, $old_gateway);
 154             };
 155             warn if $@;
 156         }
 157     }
 158 }
 159
 160 sub on_delete_hook {
 161     my ($class, $subnetid, $subnet_cfg, $vnet_cfg) = @_;
 162
 163     return;
 164 }
 165
 166 1;