Add an admin socket

src/yggdrasil/admin.go

@@ -0,0 +1,61 @@
+package yggdrasil
+
+import "net"
+import "os"
+import "bytes"
+import "fmt"
+
+// TODO: Make all of this JSON
+
+type admin struct {
+	core       *Core
+	listenaddr string
+}
+
+func (a *admin) init(c *Core, listenaddr string) {
+	a.core = c
+	a.listenaddr = listenaddr
+	go a.listen()
+}
+
+func (a *admin) listen() {
+	l, err := net.Listen("tcp", a.listenaddr)
+	if err != nil {
+		a.core.log.Printf("Admin socket failed to listen: %v", err)
+		os.Exit(1)
+	}
+	defer l.Close()
+	a.core.log.Printf("Admin socket listening on %s", l.Addr().String())
+	for {
+		conn, err := l.Accept()
+		if err == nil {
+			a.handleRequest(conn)
+		}
+	}
+}
+
+func (a *admin) handleRequest(conn net.Conn) {
+	buf := make([]byte, 1024)
+	_, err := conn.Read(buf)
+	if err != nil {
+		a.core.log.Printf("Admin socket failed to read: %v", err)
+		conn.Close()
+		return
+	}
+	buf = bytes.Trim(buf, "\x00\r\n\t")
+	switch string(buf) {
+	case "ports":
+		ports := a.core.peers.getPorts()
+		for _, v := range ports {
+			conn.Write([]byte(fmt.Sprintf("Found switch port %d\n", v.port)))
+		}
+		break
+
+	default:
+		conn.Write([]byte("I didn't understand that!\n"))
+	}
+	if err != nil {
+		a.core.log.Printf("Admin socket error: %v", err)
+	}
+	conn.Close()
+}

src/yggdrasil/core.go

@@ -20,6 +20,7 @@ type Core struct {
 	router      router
 	dht         dht
 	tun         tunDevice
+	admin       admin
 	searches    searches
 	tcp         *tcpInterface
 	udp         *udpInterface

src/yggdrasil/debug.go

@@ -336,6 +336,14 @@ func (c *Core) DEBUG_addKCPConn(saddr string) {
 
 ////////////////////////////////////////////////////////////////////////////////
 
+func (c *Core) DEBUG_setupAndStartAdminInterface(addrport string) {
+	a := admin{}
+	a.init(c, addrport)
+	c.admin = a
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
 func (c *Core) DEBUG_setLogger(log *log.Logger) {
 	c.log = log
 }

src/yggdrasil/router.go

@@ -150,7 +150,7 @@ func (r *router) sendPacket(bs []byte) {
 }
 
 func (r *router) recvPacket(bs []byte, theirAddr *address, theirSubnet *subnet) {
-  // TODO? move this into the session?
+	// TODO? move this into the session?
 	//fmt.Println("Recv packet")
 	if len(bs) < 24 {
 		util_putBytes(bs)

src/yggdrasil/tun_darwin.go

@@ -44,13 +44,13 @@ type in6_aliasreq struct {
 	ifra_addr       sockaddr_in6
 	ifra_dstaddr    sockaddr_in6
 	ifra_prefixmask sockaddr_in6
-	ifra_flags			uint32
+	ifra_flags      uint32
 	ifra_lifetime   in6_addrlifetime
 }
 
 type ifreq struct {
-	ifr_name				[16]byte
-	ifru_mtu				uint32
+	ifr_name [16]byte
+	ifru_mtu uint32
 }
 
 func (tun *tunDevice) setupAddress(addr string) error {
@@ -66,7 +66,8 @@ func (tun *tunDevice) setupAddress(addr string) error {
 	copy(ar.ifra_name[:], tun.iface.Name())
 
 	ar.ifra_prefixmask.sin6_len = uint8(unsafe.Sizeof(ar.ifra_prefixmask))
-	b := make([]byte, 16); binary.LittleEndian.PutUint16(b, uint16(0xFF00))
+	b := make([]byte, 16)
+	binary.LittleEndian.PutUint16(b, uint16(0xFF00))
 	ar.ifra_prefixmask.sin6_addr[0] = uint16(binary.BigEndian.Uint16(b))
 
 	ar.ifra_addr.sin6_len = uint8(unsafe.Sizeof(ar.ifra_addr))
@@ -74,7 +75,8 @@ func (tun *tunDevice) setupAddress(addr string) error {
 	parts := strings.Split(strings.TrimRight(addr, "/8"), ":")
 	for i := 0; i < 8; i++ {
 		addr, _ := strconv.ParseUint(parts[i], 16, 16)
-		b := make([]byte, 16); binary.LittleEndian.PutUint16(b, uint16(addr))
+		b := make([]byte, 16)
+		binary.LittleEndian.PutUint16(b, uint16(addr))
 		ar.ifra_addr.sin6_addr[i] = uint16(binary.BigEndian.Uint16(b))
 	}
 

yggdrasil.go

@@ -29,15 +29,16 @@ import . "yggdrasil"
  */
 
 type nodeConfig struct {
-	Listen    string
-	Peers     []string
-	BoxPub    string
-	BoxPriv   string
-	SigPub    string
-	SigPriv   string
-	Multicast bool
-	LinkLocal string
-	IfName    string
+	Listen      string
+	AdminListen string
+	Peers       []string
+	BoxPub      string
+	BoxPriv     string
+	SigPub      string
+	SigPriv     string
+	Multicast   bool
+	LinkLocal   string
+	IfName      string
 }
 
 type node struct {
@@ -72,6 +73,9 @@ func (n *node) init(cfg *nodeConfig, logger *log.Logger) {
 	logger.Println("Starting interface...")
 	n.core.DEBUG_setupAndStartGlobalUDPInterface(cfg.Listen)
 	logger.Println("Started interface")
+	logger.Println("Starting admin socket...")
+	n.core.DEBUG_setupAndStartAdminInterface(cfg.AdminListen)
+	logger.Println("Started admin socket")
 	go func() {
 		if len(cfg.Peers) == 0 {
 			return
@@ -92,6 +96,7 @@ func generateConfig() *nodeConfig {
 	spub, spriv := core.DEBUG_newSigKeys()
 	cfg := nodeConfig{}
 	cfg.Listen = "[::]:0"
+	cfg.AdminListen = "[::]:0"
 	cfg.BoxPub = hex.EncodeToString(bpub[:])
 	cfg.BoxPriv = hex.EncodeToString(bpriv[:])
 	cfg.SigPub = hex.EncodeToString(spub[:])