Merge pull request #20 from RiV-chain/prefix_free

Prefix free

cmd/genkeys/main.go

@@ -19,7 +19,7 @@ import (
 	"net"
 	"runtime"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	"github.com/RiV-chain/RiV-mesh/src/core"
 )
 
 type keySet struct {
@@ -41,7 +41,7 @@ func main() {
 			fmt.Println("-----")
 			fmt.Println("Priv:", hex.EncodeToString(newKey.priv))
 			fmt.Println("Pub:", hex.EncodeToString(newKey.pub))
-			addr := address.AddrForKey(newKey.pub)
+			addr := core.AddrForKey(newKey.pub)
 			fmt.Println("IP:", net.IP(addr[:]).String())
 		}
 	}

cmd/mesh/main.go

@@ -25,13 +25,13 @@ import (
 	"github.com/kardianos/minwinsvc"
 	"github.com/mitchellh/mapstructure"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 	"github.com/RiV-chain/RiV-mesh/src/admin"
 	"github.com/RiV-chain/RiV-mesh/src/config"
 	"github.com/RiV-chain/RiV-mesh/src/defaults"
 
 	"github.com/RiV-chain/RiV-mesh/src/core"
-	"github.com/RiV-chain/RiV-mesh/src/ipv6rwc"
+	//"github.com/RiV-chain/RiV-mesh/src/ipv6rwc"
 	"github.com/RiV-chain/RiV-mesh/src/multicast"
 	"github.com/RiV-chain/RiV-mesh/src/tun"
 	"github.com/RiV-chain/RiV-mesh/src/version"
@@ -261,6 +261,7 @@ func run(args yggArgs, ctx context.Context) {
 	if cfg == nil {
 		return
 	}
+	n := &node{}
 	// Have we been asked for the node address yet? If so, print it and then stop.
 	getNodeKey := func() ed25519.PublicKey {
 		if pubkey, err := hex.DecodeString(cfg.PrivateKey); err == nil {
@@ -271,14 +272,14 @@ func run(args yggArgs, ctx context.Context) {
 	switch {
 	case args.getaddr:
 		if key := getNodeKey(); key != nil {
-			addr := address.AddrForKey(key)
+			addr := n.core.AddrForKey(key)
 			ip := net.IP(addr[:])
 			fmt.Println(ip.String())
 		}
 		return
 	case args.getsnet:
 		if key := getNodeKey(); key != nil {
-			snet := address.SubnetForKey(key)
+			snet := n.core.SubnetForKey(key)
 			ipnet := net.IPNet{
 				IP:   append(snet[:], 0, 0, 0, 0, 0, 0, 0, 0),
 				Mask: net.CIDRMask(len(snet)*8, 128),
@@ -291,7 +292,6 @@ func run(args yggArgs, ctx context.Context) {
 	cfg.HttpAddress = args.httpaddress
 	cfg.WwwRoot = args.wwwroot
 
-	n := &node{}
 	// Setup the RiV-mesh node itself.
 	{
 		sk, err := hex.DecodeString(cfg.PrivateKey)
@@ -301,6 +301,7 @@ func run(args yggArgs, ctx context.Context) {
 		options := []core.SetupOption{
 			core.NodeInfo(cfg.NodeInfo),
 			core.NodeInfoPrivacy(cfg.NodeInfoPrivacy),
+			core.NetworkDomain(cfg.NetworkDomain),
 		}
 		for _, addr := range cfg.Listen {
 			options = append(options, core.ListenAddress(addr))
@@ -364,7 +365,7 @@ func run(args yggArgs, ctx context.Context) {
 			tun.InterfaceName(cfg.IfName),
 			tun.InterfaceMTU(cfg.IfMTU),
 		}
-		if n.tun, err = tun.New(ipv6rwc.NewReadWriteCloser(n.core), logger, options...); err != nil {
+		if n.tun, err = tun.New(n.core, logger, options...); err != nil {
 			panic(err)
 		}
 		if n.admin != nil && n.tun != nil {

contrib/mobile/mobile.go

@@ -9,7 +9,7 @@ import (
 
 	"github.com/gologme/log"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 	"github.com/RiV-chain/RiV-mesh/src/config"
 	"github.com/RiV-chain/RiV-mesh/src/core"
 	"github.com/RiV-chain/RiV-mesh/src/defaults"
@@ -176,7 +176,7 @@ func (m *Mesh) GetPeersJSON() (result string) {
 		IP string
 	}{}
 	for _, v := range m.core.GetPeers() {
-		a := address.AddrForKey(v.Key)
+		a := m.core.AddrForKey(v.Key)
 		ip := net.IP(a[:]).String()
 		peers = append(peers, struct {
 			core.PeerInfo

src/admin/getdht.go

@@ -6,7 +6,7 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 )
 
 type GetDHTRequest struct{}
@@ -26,7 +26,7 @@ func (a *AdminSocket) getDHTHandler(req *GetDHTRequest, res *GetDHTResponse) err
 	dht := a.core.GetDHT()
 	res.DHT = make([]DHTEntry, 0, len(dht))
 	for _, d := range dht {
-		addr := address.AddrForKey(d.Key)
+		addr := a.core.AddrForKey(d.Key)
 		res.DHT = append(res.DHT, DHTEntry{
 			IPAddress: net.IP(addr[:]).String(),
 			PublicKey: hex.EncodeToString(d.Key[:]),

src/admin/getpaths.go

@@ -6,7 +6,7 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 )
 
 type GetPathsRequest struct {
@@ -26,7 +26,7 @@ func (a *AdminSocket) getPathsHandler(req *GetPathsRequest, res *GetPathsRespons
 	paths := a.core.GetPaths()
 	res.Paths = make([]PathEntry, 0, len(paths))
 	for _, p := range paths {
-		addr := address.AddrForKey(p.Key)
+		addr := a.core.AddrForKey(p.Key)
 		res.Paths = append(res.Paths, PathEntry{
 			IPAddress: net.IP(addr[:]).String(),
 			PublicKey: hex.EncodeToString(p.Key),

src/admin/getpeers.go

@@ -5,7 +5,7 @@ import (
 	"net"
 	"sort"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 )
 
 type GetPeersRequest struct {
@@ -31,7 +31,7 @@ func (a *AdminSocket) getPeersHandler(req *GetPeersRequest, res *GetPeersRespons
 	peers := a.core.GetPeers()
 	res.Peers = make([]PeerEntry, 0, len(peers))
 	for _, p := range peers {
-		addr := address.AddrForKey(p.Key)
+		addr := a.core.AddrForKey(p.Key)
 		res.Peers = append(res.Peers, PeerEntry{
 			IPAddress: net.IP(addr[:]).String(),
 			PublicKey: hex.EncodeToString(p.Key),

src/admin/getsessions.go

@@ -6,7 +6,7 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 )
 
 type GetSessionsRequest struct{}
@@ -27,7 +27,7 @@ func (a *AdminSocket) getSessionsHandler(req *GetSessionsRequest, res *GetSessio
 	sessions := a.core.GetSessions()
 	res.Sessions = make([]SessionEntry, 0, len(sessions))
 	for _, s := range sessions {
-		addr := address.AddrForKey(s.Key)
+		addr := a.core.AddrForKey(s.Key)
 		res.Sessions = append(res.Sessions, SessionEntry{
 			IPAddress: net.IP(addr[:]).String(),
 			PublicKey: hex.EncodeToString(s.Key[:]),

src/config/config.go

@@ -39,6 +39,7 @@ type NodeConfig struct {
 	IfMTU               uint64                     `comment:"Maximum Transmission Unit (MTU) size for your local TUN interface.\nDefault is the largest supported size for your platform. The lowest\npossible value is 1280."`
 	NodeInfoPrivacy     bool                       `comment:"By default, nodeinfo contains some defaults including the platform,\narchitecture and RiV-mesh version. These can help when surveying\nthe network and diagnosing network routing problems. Enabling\nnodeinfo privacy prevents this, so that only items specified in\n\"NodeInfo\" are sent back if specified."`
 	NodeInfo            map[string]interface{}     `comment:"Optional node info. This must be a { \"key\": \"value\", ... } map\nor set as null. This is entirely optional but, if set, is visible\nto the whole network on request."`
+	NetworkDomain       NetworkDomainConfig        `comment:"Address prefix used by mesh.\nThe current implementation requires this to be a multiple of 8 bits + 7 bits.4\nNodes that configure this differently will be unable to communicate with each other using IP packets."`
 }
 
 type MulticastInterfaceConfig struct {
@@ -49,6 +50,10 @@ type MulticastInterfaceConfig struct {
 	Priority uint8
 }
 
+type NetworkDomainConfig struct {
+        Prefix [1]byte
+}
+
 // NewSigningKeys replaces the signing keypair in the NodeConfig with a new
 // signing keypair. The signing keys are used by the switch to derive the
 // structure of the spanning tree.

src/core/address.go

@@ -1,6 +1,6 @@
 // Package address contains the types used by mesh to represent IPv6 addresses or prefixes, as well as functions for working with these types.
 // Of particular importance are the functions used to derive addresses or subnets from a NodeID, or to get the NodeID and bitmask of the bits visible from an address, which is needed for DHT searches.
-package address
+package core
 
 import (
 	"crypto/ed25519"
@@ -16,15 +16,15 @@ type Subnet [8]byte
 // The current implementation requires this to be a multiple of 8 bits + 7 bits.
 // The 8th bit of the last byte is used to signal nodes (0) or /64 prefixes (1).
 // Nodes that configure this differently will be unable to communicate with each other using IP packets, though routing and the DHT machinery *should* still work.
-func GetPrefix() [1]byte {
-	return [...]byte{0xfc}
+func (c *Core) GetPrefix() [1]byte {
+	return c.config.networkdomain.Prefix
 }
 
 // IsValid returns true if an address falls within the range used by nodes in the network.
-func (a *Address) IsValid() bool {
-	prefix := GetPrefix()
+func (c *Core) IsValidAddress(a Address) bool {
+	prefix := c.GetPrefix()
 	for idx := range prefix {
-		if (*a)[idx] != prefix[idx] {
+		if a[idx] != prefix[idx] {
 			return false
 		}
 	}
@@ -32,15 +32,15 @@ func (a *Address) IsValid() bool {
 }
 
 // IsValid returns true if a prefix falls within the range usable by the network.
-func (s *Subnet) IsValid() bool {
-	prefix := GetPrefix()
+func (c *Core) IsValidSubnet(s Subnet) bool {
+	prefix := c.GetPrefix()
 	l := len(prefix)
 	for idx := range prefix[:l-1] {
-		if (*s)[idx] != prefix[idx] {
+		if s[idx] != prefix[idx] {
 			return false
 		}
 	}
-	return (*s)[l-1] == prefix[l-1]|0x01
+	return s[l-1] == prefix[l-1]|0x01
 }
 
 // AddrForKey takes an ed25519.PublicKey as an argument and returns an *Address.
@@ -48,7 +48,7 @@ func (s *Subnet) IsValid() bool {
 // This address begins with the contents of GetPrefix(), with the last bit set to 0 to indicate an address.
 // The following 8 bits are set to the number of leading 1 bits in the bitwise inverse of the public key.
 // The bitwise inverse of the key, excluding the leading 1 bits and the first leading 0 bit, is truncated to the appropriate length and makes up the remainder of the address.
-func AddrForKey(publicKey ed25519.PublicKey) *Address {
+func (c *Core) AddrForKey(publicKey ed25519.PublicKey) *Address {
 	// 128 bit address
 	// Begins with prefix
 	// Next bit is a 0
@@ -86,7 +86,7 @@ func AddrForKey(publicKey ed25519.PublicKey) *Address {
 			temp = append(temp, bits)
 		}
 	}
-	prefix := GetPrefix()
+	prefix := c.GetPrefix()
 	copy(addr[:], prefix[:])
 	addr[len(prefix)] = ones
 	copy(addr[len(prefix)+1:], temp)
@@ -98,26 +98,26 @@ func AddrForKey(publicKey ed25519.PublicKey) *Address {
 // The subnet begins with the address prefix, with the last bit set to 1 to indicate a prefix.
 // The following 8 bits are set to the number of leading 1 bits in the bitwise inverse of the key.
 // The bitwise inverse of the key, excluding the leading 1 bits and the first leading 0 bit, is truncated to the appropriate length and makes up the remainder of the subnet.
-func SubnetForKey(publicKey ed25519.PublicKey) *Subnet {
+func (c *Core) SubnetForKey(publicKey ed25519.PublicKey) *Subnet {
 	// Exactly as the address version, with two exceptions:
 	//  1) The first bit after the fixed prefix is a 1 instead of a 0
 	//  2) It's truncated to a subnet prefix length instead of 128 bits
-	addr := AddrForKey(publicKey)
+	addr := c.AddrForKey(publicKey)
 	if addr == nil {
 		return nil
 	}
 	var snet Subnet
 	copy(snet[:], addr[:])
-	prefix := GetPrefix() // nolint:staticcheck
+	prefix := c.GetPrefix() // nolint:staticcheck
 	snet[len(prefix)-1] |= 0x01
 	return &snet
 }
 
 // GetKet returns the partial ed25519.PublicKey for the Address.
 // This is used for key lookup.
-func (a *Address) GetKey() ed25519.PublicKey {
+func (c *Core) GetAddressKey(a Address) ed25519.PublicKey {
 	var key [ed25519.PublicKeySize]byte
-	prefix := GetPrefix() // nolint:staticcheck
+	prefix := c.GetPrefix() // nolint:staticcheck
 	ones := int(a[len(prefix)])
 	for idx := 0; idx < ones; idx++ {
 		key[idx/8] |= 0x80 >> byte(idx%8)
@@ -143,8 +143,8 @@ func (a *Address) GetKey() ed25519.PublicKey {
 
 // GetKet returns the partial ed25519.PublicKey for the Subnet.
 // This is used for key lookup.
-func (s *Subnet) GetKey() ed25519.PublicKey {
+func (c *Core) GetSubnetKey(s Subnet) ed25519.PublicKey {
 	var addr Address
 	copy(addr[:], s[:])
-	return addr.GetKey()
+	return c.GetAddressKey(addr)
 }

src/core/address_test.go

@@ -1,4 +1,4 @@
-package address
+package core
 
 import (
 	"bytes"

src/core/api.go

@@ -17,7 +17,7 @@ import (
 	//"time"
 
 	"github.com/Arceliar/phony"
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 )
 
 type SelfInfo struct {
@@ -159,7 +159,7 @@ func (c *Core) Listen(u *url.URL, sintf string) (*Listener, error) {
 // that application also implements either VPN functionality or deals with IP
 // packets specifically.
 func (c *Core) Address() net.IP {
-	addr := net.IP(address.AddrForKey(c.public)[:])
+	addr := net.IP(c.AddrForKey(c.public)[:])
 	return addr
 }
 
@@ -169,7 +169,7 @@ func (c *Core) Address() net.IP {
 // that application also implements either VPN functionality or deals with IP
 // packets specifically.
 func (c *Core) Subnet() net.IPNet {
-	subnet := address.SubnetForKey(c.public)[:]
+	subnet := c.SubnetForKey(c.public)[:]
 	subnet = append(subnet, 0, 0, 0, 0, 0, 0, 0, 0)
 	return net.IPNet{IP: subnet, Mask: net.CIDRMask(64, 128)}
 }

src/core/core.go

@@ -20,6 +20,7 @@ import (
 // The Core object represents the Mesh node. You should create a Core
 // object for each Mesh node you plan to run.
 type Core struct {
+	address      Address
 	// This is the main data structure that holds everything else for a node
 	// We're going to keep our own copy of the provided config - that way we can
 	// guarantee that it will be covered by the mutex
@@ -34,11 +35,12 @@ type Core struct {
 	log          Logger
 	addPeerTimer *time.Timer
 	config       struct {
-		_peers             map[Peer]*linkInfo          // configurable after startup
+		_peers             map[Peer]*linkInfo         // configurable after startup
 		_listeners         map[ListenAddress]struct{} // configurable after startup
 		nodeinfo           NodeInfo                   // immutable after startup
 		nodeinfoPrivacy    NodeInfoPrivacy            // immutable after startup
 		_allowedPublicKeys map[[32]byte]struct{}      // configurable after startup
+		networkdomain      NetworkDomain              // immutable after startup
 	}
 }
 

src/core/link.go

@@ -16,7 +16,7 @@ import (
 	"sync/atomic"
 
 	"github.com/Arceliar/phony"
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 	//"github.com/Arceliar/phony" // TODO? use instead of mutexes
 )
 
@@ -188,7 +188,7 @@ func (intf *link) handler() error {
 	if intf.incoming {
 		dir = "inbound"
 	}
-	remoteAddr := net.IP(address.AddrForKey(meta.key)[:]).String()
+	remoteAddr := net.IP(intf.links.core.AddrForKey(meta.key)[:]).String()
 	remoteStr := fmt.Sprintf("%s@%s", remoteAddr, intf.info.remote)
 	localStr := intf.conn.LocalAddr()
 	intf.links.core.log.Infof("Connected %s %s: %s, source %s",

src/core/options.go

@@ -14,6 +14,8 @@ func (c *Core) _applyOption(opt SetupOption) {
 		c.config.nodeinfo = v
 	case NodeInfoPrivacy:
 		c.config.nodeinfoPrivacy = v
+	case NetworkDomain:
+		c.config.networkdomain = v
 	case AllowedPublicKey:
 		pk := [32]byte{}
 		copy(pk[:], v)
@@ -32,10 +34,14 @@ type Peer struct {
 }
 type NodeInfo map[string]interface{}
 type NodeInfoPrivacy bool
+type NetworkDomain struct {
+	Prefix          [1]byte
+}
 type AllowedPublicKey ed25519.PublicKey
 
 func (a ListenAddress) isSetupOption()    {}
 func (a Peer) isSetupOption()             {}
 func (a NodeInfo) isSetupOption()         {}
 func (a NodeInfoPrivacy) isSetupOption()  {}
+func (a NetworkDomain) isSetupOption()    {}
 func (a AllowedPublicKey) isSetupOption() {}

src/core/proto.go

@@ -12,7 +12,7 @@ import (
 	iwt "github.com/Arceliar/ironwood/types"
 	"github.com/Arceliar/phony"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 )
 
 const (
@@ -266,7 +266,7 @@ func (p *protoHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
 		if err := msg.UnmarshalJSON(info); err != nil {
 			return nil, err
 		}
-		ip := net.IP(address.AddrForKey(kbs)[:])
+		ip := net.IP(p.core.AddrForKey(kbs)[:])
 		res := DebugGetSelfResponse{ip.String(): msg}
 		return res, nil
 	}
@@ -316,7 +316,7 @@ func (p *protoHandler) getPeersHandler(in json.RawMessage) (interface{}, error)
 		if err := msg.UnmarshalJSON(js); err != nil {
 			return nil, err
 		}
-		ip := net.IP(address.AddrForKey(kbs)[:])
+		ip := net.IP(p.core.AddrForKey(kbs)[:])
 		res := DebugGetPeersResponse{ip.String(): msg}
 		return res, nil
 	}
@@ -366,7 +366,7 @@ func (p *protoHandler) getDHTHandler(in json.RawMessage) (interface{}, error) {
 		if err := msg.UnmarshalJSON(js); err != nil {
 			return nil, err
 		}
-		ip := net.IP(address.AddrForKey(kbs)[:])
+		ip := net.IP(p.core.AddrForKey(kbs)[:])
 		res := DebugGetDHTResponse{ip.String(): msg}
 		return res, nil
 	}

src/defaults/defaults.go

@@ -3,6 +3,7 @@ package defaults
 import "github.com/RiV-chain/RiV-mesh/src/config"
 
 type MulticastInterfaceConfig = config.MulticastInterfaceConfig
+type NetworkDomainConfig = config.NetworkDomainConfig
 
 var defaultConfig = ""      // LDFLAGS='-X github.com/yggdrasil-network/yggdrasil-go/src/defaults.defaultConfig=/path/to/config
 var defaultAdminListen = "" // LDFLAGS='-X github.com/yggdrasil-network/yggdrasil-go/src/defaults.defaultAdminListen=unix://path/to/sock'
@@ -20,6 +21,9 @@ type platformDefaultParameters struct {
 	// Multicast interfaces
 	DefaultMulticastInterfaces []MulticastInterfaceConfig
 
+	//Network domain
+	DefaultNetworkDomain NetworkDomainConfig
+
 	// TUN
 	MaximumIfMTU  uint64
 	DefaultIfMTU  uint64
@@ -52,6 +56,7 @@ func GenerateConfig() *config.NodeConfig {
 	cfg.InterfacePeers = map[string][]string{}
 	cfg.AllowedPublicKeys = []string{}
 	cfg.MulticastInterfaces = defaults.DefaultMulticastInterfaces
+	cfg.NetworkDomain = defaults.DefaultNetworkDomain
 	cfg.IfName = defaults.DefaultIfName
 	cfg.IfMTU = defaults.DefaultIfMTU
 	cfg.NodeInfoPrivacy = false

src/defaults/defaults_darwin.go

@@ -19,6 +19,11 @@ func getDefaults() platformDefaultParameters {
 			{Regex: "bridge.*", Beacon: true, Listen: true},
 		},
 
+		// Network domain
+                DefaultNetworkDomain: NetworkDomainConfig{
+                        Prefix: [...]byte{0xfc},
+                },
+
 		// TUN
 		MaximumIfMTU:  65535,
 		DefaultIfMTU:  65535,

src/defaults/defaults_freebsd.go

@@ -18,6 +18,11 @@ func getDefaults() platformDefaultParameters {
 			{Regex: ".*", Beacon: true, Listen: true},
 		},
 
+                // Network domain
+                DefaultNetworkDomain: NetworkDomainConfig{
+                        Prefix: [...]byte{0xfc},
+                },
+
 		// TUN
 		MaximumIfMTU:  32767,
 		DefaultIfMTU:  32767,

src/defaults/defaults_linux.go

@@ -18,6 +18,11 @@ func getDefaults() platformDefaultParameters {
 			{Regex: ".*", Beacon: true, Listen: true},
 		},
 
+                // Network domain
+                DefaultNetworkDomain: NetworkDomainConfig{
+                        Prefix: [...]byte{0xfc},
+                },
+
 		// TUN
 		MaximumIfMTU:  65535,
 		DefaultIfMTU:  65535,

src/defaults/defaults_openbsd.go

@@ -18,6 +18,11 @@ func getDefaults() platformDefaultParameters {
 			{Regex: ".*", Beacon: true, Listen: true},
 		},
 
+                // Network domain
+                DefaultNetworkDomain: NetworkDomainConfig{
+                        Prefix: [...]byte{0xfc},
+                },
+
 		// TUN
 		MaximumIfMTU:  16384,
 		DefaultIfMTU:  16384,

src/defaults/defaults_other.go

@@ -18,6 +18,11 @@ func getDefaults() platformDefaultParameters {
 			{Regex: ".*", Beacon: true, Listen: true},
 		},
 
+                // Network domain
+                DefaultNetworkDomain: NetworkDomainConfig{
+                        Prefix: [...]byte{0xfc},
+                },
+
 		// TUN
 		MaximumIfMTU:  65535,
 		DefaultIfMTU:  65535,

src/defaults/defaults_windows.go

@@ -18,6 +18,11 @@ func getDefaults() platformDefaultParameters {
 			{Regex: ".*", Beacon: true, Listen: true},
 		},
 
+                // Network domain
+                DefaultNetworkDomain: NetworkDomainConfig{
+                        Prefix: [...]byte{0xfc},
+                },
+
 		// TUN
 		MaximumIfMTU:  65535,
 		DefaultIfMTU:  65535,

src/ipv6rwc/ipv6rwc.go

@@ -13,7 +13,7 @@ import (
 
 	iwt "github.com/Arceliar/ironwood/types"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 	"github.com/RiV-chain/RiV-mesh/src/core"
 )
 
@@ -30,21 +30,21 @@ type keyArray [ed25519.PublicKeySize]byte
 
 type keyStore struct {
 	core         *core.Core
-	address      address.Address
-	subnet       address.Subnet
+	address      core.Address
+	subnet       core.Subnet
 	mutex        sync.Mutex
 	keyToInfo    map[keyArray]*keyInfo
-	addrToInfo   map[address.Address]*keyInfo
-	addrBuffer   map[address.Address]*buffer
-	subnetToInfo map[address.Subnet]*keyInfo
-	subnetBuffer map[address.Subnet]*buffer
+	addrToInfo   map[core.Address]*keyInfo
+	addrBuffer   map[core.Address]*buffer
+	subnetToInfo map[core.Subnet]*keyInfo
+	subnetBuffer map[core.Subnet]*buffer
 	mtu          uint64
 }
 
 type keyInfo struct {
 	key     keyArray
-	address address.Address
-	subnet  address.Subnet
+	address core.Address
+	subnet  core.Subnet
 	timeout *time.Timer // From calling a time.AfterFunc to do cleanup
 }
 
@@ -55,21 +55,21 @@ type buffer struct {
 
 func (k *keyStore) init(c *core.Core) {
 	k.core = c
-	k.address = *address.AddrForKey(k.core.PublicKey())
-	k.subnet = *address.SubnetForKey(k.core.PublicKey())
+	k.address = *c.AddrForKey(k.core.PublicKey())
+	k.subnet = *c.SubnetForKey(k.core.PublicKey())
 	if err := k.core.SetOutOfBandHandler(k.oobHandler); err != nil {
 		err = fmt.Errorf("tun.core.SetOutOfBandHander: %w", err)
 		panic(err)
 	}
 	k.keyToInfo = make(map[keyArray]*keyInfo)
-	k.addrToInfo = make(map[address.Address]*keyInfo)
-	k.addrBuffer = make(map[address.Address]*buffer)
-	k.subnetToInfo = make(map[address.Subnet]*keyInfo)
-	k.subnetBuffer = make(map[address.Subnet]*buffer)
+	k.addrToInfo = make(map[core.Address]*keyInfo)
+	k.addrBuffer = make(map[core.Address]*buffer)
+	k.subnetToInfo = make(map[core.Subnet]*keyInfo)
+	k.subnetBuffer = make(map[core.Subnet]*buffer)
 	k.mtu = 1280 // Default to something safe, expect user to set this
 }
 
-func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
+func (k *keyStore) sendToAddress(addr core.Address, bs []byte) {
 	k.mutex.Lock()
 	if info := k.addrToInfo[addr]; info != nil {
 		k.resetTimeout(info)
@@ -94,11 +94,11 @@ func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
 			}
 		})
 		k.mutex.Unlock()
-		k.sendKeyLookup(addr.GetKey())
+		k.sendKeyLookup(k.core.GetAddressKey(addr))
 	}
 }
 
-func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
+func (k *keyStore) sendToSubnet(subnet core.Subnet, bs []byte) {
 	k.mutex.Lock()
 	if info := k.subnetToInfo[subnet]; info != nil {
 		k.resetTimeout(info)
@@ -123,7 +123,7 @@ func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
 			}
 		})
 		k.mutex.Unlock()
-		k.sendKeyLookup(subnet.GetKey())
+		k.sendKeyLookup(k.core.GetSubnetKey(subnet))
 	}
 }
 
@@ -136,8 +136,8 @@ func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
 	if info = k.keyToInfo[kArray]; info == nil {
 		info = new(keyInfo)
 		info.key = kArray
-		info.address = *address.AddrForKey(ed25519.PublicKey(info.key[:]))
-		info.subnet = *address.SubnetForKey(ed25519.PublicKey(info.key[:]))
+		info.address = *k.core.AddrForKey(ed25519.PublicKey(info.key[:]))
+		info.subnet = *k.core.SubnetForKey(ed25519.PublicKey(info.key[:]))
 		k.keyToInfo[info.key] = info
 		k.addrToInfo[info.address] = info
 		k.subnetToInfo[info.subnet] = info
@@ -184,7 +184,7 @@ func (k *keyStore) oobHandler(fromKey, toKey ed25519.PublicKey, data []byte) {
 	sig := data[1:]
 	switch data[0] {
 	case typeKeyLookup:
-		snet := *address.SubnetForKey(toKey)
+		snet := *k.core.SubnetForKey(toKey)
 		if snet == k.subnet && ed25519.Verify(fromKey, toKey[:], sig) {
 			// This is looking for at least our subnet (possibly our address)
 			// Send a response
@@ -248,8 +248,8 @@ func (k *keyStore) readPC(p []byte) (int, error) {
 			}
 			continue
 		}
-		var srcAddr, dstAddr address.Address
-		var srcSubnet, dstSubnet address.Subnet
+		var srcAddr, dstAddr core.Address
+		var srcSubnet, dstSubnet core.Subnet
 		copy(srcAddr[:], bs[8:])
 		copy(dstAddr[:], bs[24:])
 		copy(srcSubnet[:], bs[8:])
@@ -274,8 +274,8 @@ func (k *keyStore) writePC(bs []byte) (int, error) {
 		strErr := fmt.Sprint("undersized IPv6 packet, length: ", len(bs))
 		return 0, errors.New(strErr)
 	}
-	var srcAddr, dstAddr address.Address
-	var srcSubnet, dstSubnet address.Subnet
+	var srcAddr, dstAddr core.Address
+	var srcSubnet, dstSubnet core.Subnet
 	copy(srcAddr[:], bs[8:])
 	copy(dstAddr[:], bs[24:])
 	copy(srcSubnet[:], bs[8:])
@@ -286,9 +286,9 @@ func (k *keyStore) writePC(bs []byte) (int, error) {
 		strErr := fmt.Sprint("incorrect source address: ", net.IP(srcAddr[:]).String())
 		return 0, errors.New(strErr)
 	}
-	if dstAddr.IsValid() {
+	if k.core.IsValidAddress(dstAddr) {
 		k.sendToAddress(dstAddr, bs)
-	} else if dstSubnet.IsValid() {
+	} else if k.core.IsValidSubnet(dstSubnet) {
 		k.sendToSubnet(dstSubnet, bs)
 	} else {
 		return 0, errors.New("invalid destination address")
@@ -331,11 +331,11 @@ func NewReadWriteCloser(c *core.Core) *ReadWriteCloser {
 	return rwc
 }
 
-func (rwc *ReadWriteCloser) Address() address.Address {
+func (rwc *ReadWriteCloser) Address() core.Address {
 	return rwc.address
 }
 
-func (rwc *ReadWriteCloser) Subnet() address.Subnet {
+func (rwc *ReadWriteCloser) Subnet() core.Subnet {
 	return rwc.subnet
 }
 

src/tun/tun.go

@@ -13,7 +13,7 @@ import (
 	"github.com/Arceliar/phony"
 	"golang.zx2c4.com/wireguard/tun"
 
-	"github.com/RiV-chain/RiV-mesh/src/address"
+	//"github.com/RiV-chain/RiV-mesh/src/address"
 	"github.com/RiV-chain/RiV-mesh/src/core"
 	"github.com/RiV-chain/RiV-mesh/src/defaults"
 	"github.com/RiV-chain/RiV-mesh/src/ipv6rwc"
@@ -26,10 +26,11 @@ type MTU uint16
 // should pass this object to the mesh.SetRouterAdapter() function before
 // calling mesh.Start().
 type TunAdapter struct {
+	core        *core.Core
 	rwc         *ipv6rwc.ReadWriteCloser
 	log         core.Logger
-	addr        address.Address
-	subnet      address.Subnet
+	addr        core.Address
+	subnet      core.Subnet
 	mtu         uint64
 	iface       tun.Device
 	phony.Inbox // Currently only used for _handlePacket from the reader, TODO: all the stuff that currently needs a mutex below
@@ -90,9 +91,10 @@ func MaximumMTU() uint64 {
 
 // Init initialises the TUN module. You must have acquired a Listener from
 // the Mesh	 core before this point and it must not be in use elsewhere.
-func New(rwc *ipv6rwc.ReadWriteCloser, log core.Logger, opts ...SetupOption) (*TunAdapter, error) {
+func New(core *core.Core, log core.Logger, opts ...SetupOption) (*TunAdapter, error) {
 	tun := &TunAdapter{
-		rwc: rwc,
+		core: core,
+		rwc: ipv6rwc.NewReadWriteCloser(core),
 		log: log,
 	}
 	for _, opt := range opts {
@@ -107,7 +109,7 @@ func (tun *TunAdapter) _start() error {
 	}
 	tun.addr = tun.rwc.Address()
 	tun.subnet = tun.rwc.Subnet()
-	addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(address.GetPrefix())-1)
+	addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(tun.core.GetPrefix())-1)
 	if tun.config.name == "none" || tun.config.name == "dummy" {
 		tun.log.Debugln("Not starting TUN as ifname is none or dummy")
 		tun.isEnabled = false