Function newConfigMaps

tailnet/configmaps.go:90–143

(
	logger slog.Logger, engine engineConfigurable,
	nodeID tailcfg.NodeID, nodeKey key.NodePrivate, discoKey key.DiscoPublic,
	matchDomain dnsname.FQDN,
)

}

func newConfigMaps(
	logger slog.Logger, engine engineConfigurable,
	nodeID tailcfg.NodeID, nodeKey key.NodePrivate, discoKey key.DiscoPublic,
	matchDomain dnsname.FQDN,
) *configMaps {
	pubKey := nodeKey.Public()
	c := &configMaps{
		phased: phased{Cond: *(sync.NewCond(&sync.Mutex{}))},
		logger: logger,
		engine: engine,
		hosts:  make(map[dnsname.FQDN][]netip.Addr),
		static: netmap.NetworkMap{
			SelfNode: &tailcfg.Node{
				ID:       nodeID,
				Key:      pubKey,
				DiscoKey: discoKey,
			},
			NodeKey:    pubKey,
			PrivateKey: nodeKey,
			PacketFilter: []filter.Match{{
				// Allow any protocol!
				IPProto: []ipproto.Proto{ipproto.TCP, ipproto.UDP, ipproto.ICMPv4, ipproto.ICMPv6, ipproto.SCTP},
				// Allow traffic sourced from anywhere.
				Srcs: []netip.Prefix{
					netip.PrefixFrom(netip.AddrFrom4([4]byte{}), 0),
					netip.PrefixFrom(netip.AddrFrom16([16]byte{}), 0),
				},
				// Allow traffic to route anywhere.
				Dsts: []filter.NetPortRange{
					{
						Net: netip.PrefixFrom(netip.AddrFrom4([4]byte{}), 0),
						Ports: filter.PortRange{
							First: 0,
							Last:  65535,
						},
					},
					{
						Net: netip.PrefixFrom(netip.AddrFrom16([16]byte{}), 0),
						Ports: filter.PortRange{
							First: 0,
							Last:  65535,
						},
					},
				},
				Caps: []filter.CapMatch{},
			}},
		},
		peers:       make(map[uuid.UUID]*peerLifecycle),
		matchDomain: matchDomain,
		clock:       quartz.NewReal(),
	}
	go c.configLoop()
	return c
}

// configLoop waits for the config to be dirty, then reconfigures the engine.
// It is internal to configMaps