Add FriendlyName option, show friendly name and real endpoint in admin socket/yggdrasilctl

src/yggdrasil/admin.go

@@ -470,6 +470,7 @@ func (a *admin) getData_getSelf() *admin_nodeInfo {
 		{"ip", a.core.GetAddress().String()},
 		{"subnet", a.core.GetSubnet().String()},
 		{"coords", fmt.Sprint(coords)},
+		{"friendly_name", a.core.friendlyName},
 	}
 	return &self
 }
@@ -492,6 +493,8 @@ func (a *admin) getData_getPeers() []admin_nodeInfo {
 			{"uptime", int(time.Since(p.firstSeen).Seconds())},
 			{"bytes_sent", atomic.LoadUint64(&p.bytesSent)},
 			{"bytes_recvd", atomic.LoadUint64(&p.bytesRecvd)},
+			{"endpoint", p.endpoint},
+			{"friendly_name", p.friendlyName},
 		}
 		peerInfos = append(peerInfos, info)
 	}
@@ -516,6 +519,8 @@ func (a *admin) getData_getSwitchPeers() []admin_nodeInfo {
 			{"port", elem.port},
 			{"bytes_sent", atomic.LoadUint64(&peer.bytesSent)},
 			{"bytes_recvd", atomic.LoadUint64(&peer.bytesRecvd)},
+			{"endpoint", peer.endpoint},
+			{"friendly_name", peer.friendlyName},
 		}
 		peerInfos = append(peerInfos, info)
 	}

src/yggdrasil/config/config.go

@@ -2,6 +2,7 @@ package config
 
 // NodeConfig defines all configuration values needed to run a signle yggdrasil node
 type NodeConfig struct {
+	FriendlyName                string              `comment:"Friendly name for this node. It is visible to direct peers."`
 	Listen                      string              `comment:"Listen address for peer connections. Default is to listen for all\nTCP connections over IPv4 and IPv6 with a random port."`
 	AdminListen                 string              `comment:"Listen address for admin connections Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X."`
 	Peers                       []string            `comment:"List of connection strings for static peers in URI format, i.e.\ntcp://a.b.c.d:e or socks://a.b.c.d:e/f.g.h.i:j."`

src/yggdrasil/core.go

@@ -20,6 +20,7 @@ type Core struct {
 	boxPriv      boxPrivKey
 	sigPub       sigPubKey
 	sigPriv      sigPrivKey
+	friendlyName string
 	switchTable  switchTable
 	peers        peers
 	sigs         sigManager
@@ -38,7 +39,8 @@ type Core struct {
 func (c *Core) init(bpub *boxPubKey,
 	bpriv *boxPrivKey,
 	spub *sigPubKey,
-	spriv *sigPrivKey) {
+	spriv *sigPrivKey,
+	friendlyname string) {
 	// TODO separate init and start functions
 	//  Init sets up structs
 	//  Start launches goroutines that depend on structs being set up
@@ -49,6 +51,7 @@ func (c *Core) init(bpub *boxPubKey,
 	}
 	c.boxPub, c.boxPriv = *bpub, *bpriv
 	c.sigPub, c.sigPriv = *spub, *spriv
+	c.friendlyName = friendlyname
 	c.admin.core = c
 	c.sigs.init()
 	c.searches.init(c)
@@ -61,6 +64,14 @@ func (c *Core) init(bpub *boxPubKey,
 	c.tun.init(c)
 }
 
+// Gets the friendly name of this node, as specified in the NodeConfig.
+func (c *Core) GetFriendlyName() string {
+	if c.friendlyName == "" {
+		return "(none)"
+	}
+	return c.friendlyName
+}
+
 // Starts up Yggdrasil using the provided NodeConfig, and outputs debug logging
 // through the provided log.Logger. The started stack will include TCP and UDP
 // sockets, a multicast discovery socket, an admin socket, router, switch and
@@ -94,7 +105,7 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) error {
 	copy(sigPub[:], sigPubHex)
 	copy(sigPriv[:], sigPrivHex)
 
-	c.init(&boxPub, &boxPriv, &sigPub, &sigPriv)
+	c.init(&boxPub, &boxPriv, &sigPub, &sigPriv, nc.FriendlyName)
 	c.admin.init(c, nc.AdminListen)
 
 	if err := c.tcp.init(c, nc.Listen, nc.ReadTimeout); err != nil {

src/yggdrasil/peer.go

@@ -85,6 +85,8 @@ type peer struct {
 	sig          sigPubKey
 	shared       boxSharedKey
 	linkShared   boxSharedKey
+	endpoint     string
+	friendlyName string
 	firstSeen    time.Time       // To track uptime for getPeers
 	linkOut      (chan []byte)   // used for protocol traffic (to bypass queues)
 	doSend       (chan struct{}) // tell the linkLoop to send a switchMsg
@@ -94,12 +96,14 @@ type peer struct {
 }
 
 // Creates a new peer with the specified box, sig, and linkShared keys, using the lowest unocupied port number.
-func (ps *peers) newPeer(box *boxPubKey, sig *sigPubKey, linkShared *boxSharedKey) *peer {
+func (ps *peers) newPeer(box *boxPubKey, sig *sigPubKey, linkShared *boxSharedKey, endpoint string, friendlyname string) *peer {
 	now := time.Now()
 	p := peer{box: *box,
 		sig:          *sig,
 		shared:       *getSharedKey(&ps.core.boxPriv, box),
 		linkShared:   *linkShared,
+		endpoint:     endpoint,
+		friendlyName: friendlyname,
 		firstSeen:    now,
 		doSend:       make(chan struct{}, 1),
 		core:         ps.core}

src/yggdrasil/router.go

@@ -47,7 +47,7 @@ func (r *router) init(core *Core) {
 	r.core = core
 	r.addr = *address_addrForNodeID(&r.core.dht.nodeID)
 	in := make(chan []byte, 32) // TODO something better than this...
-	p := r.core.peers.newPeer(&r.core.boxPub, &r.core.sigPub, &boxSharedKey{})
+	p := r.core.peers.newPeer(&r.core.boxPub, &r.core.sigPub, &boxSharedKey{}, "(self)", r.core.GetFriendlyName())
 	p.out = func(packet []byte) {
 		// This is to make very sure it never blocks
 		select {

src/yggdrasil/tcp.go

@@ -287,7 +287,7 @@ func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
 	}()
 	// Note that multiple connections to the same node are allowed
 	//  E.g. over different interfaces
-	p := iface.core.peers.newPeer(&info.box, &info.sig, getSharedKey(myLinkPriv, &meta.link))
+	p := iface.core.peers.newPeer(&info.box, &info.sig, getSharedKey(myLinkPriv, &meta.link), sock.RemoteAddr().String(), "(none)")
 	p.linkOut = make(chan []byte, 1)
 	in := func(bs []byte) {
 		p.handlePacket(bs)

yggdrasilctl.go

@@ -155,6 +155,12 @@ func main() {
 							minutes := uint(preformatted.(float64)/60) % 60
 							hours := uint(preformatted.(float64) / 60 / 60)
 							formatted = fmt.Sprintf("%02d:%02d:%02d", hours, minutes, seconds)
+						case "friendly_name":
+							if len(preformatted.(string)) > 32 {
+								formatted = fmt.Sprintf("%s...", preformatted.(string)[:32])
+							} else {
+								formatted = preformatted.(string)
+							}
 						default:
 							formatted = fmt.Sprint(preformatted)
 						}