Update to support netip use in Nebula 1.9.4 (#182)

lib/models/HostInfo.dart

@@ -21,7 +21,7 @@ class HostInfo {
 
   factory HostInfo.fromJson(Map<String, dynamic> json) {
     UDPAddress? currentRemote;
-    if (json['currentRemote'] != null) {
+    if (json['currentRemote'] != "") {
       currentRemote = UDPAddress.fromJson(json['currentRemote']);
     }
 
@@ -52,6 +52,11 @@ class UDPAddress {
   String ip;
   int port;
 
+  UDPAddress({
+    required this.ip,
+    required this.port,
+  });
+
   @override
   String toString() {
     // Simple check on if nebula told us about a v4 or v6 ip address
@@ -62,7 +67,17 @@ class UDPAddress {
     return '$ip:$port';
   }
 
-  UDPAddress.fromJson(Map<String, dynamic> json)
-      : ip = json['ip'],
-        port = json['port'];
+  factory UDPAddress.fromJson(String json) {
+    // IPv4 Address
+    if (json.contains('.')) {
+      var ip = json.split(':')[0];
+      var port = int.parse(json.split(':')[1]);
+      return UDPAddress(ip: ip, port: port);
+    }
+
+    // IPv6 Address
+    var ip = json.split(']')[0].substring(1);
+    var port = int.parse(json.split(']')[1].split(':')[1]);
+    return UDPAddress(ip: ip, port: port);
+  }
 }

nebula/control.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"net"
+	"net/netip"
 	"os"
 	"runtime"
 	"runtime/debug"
@@ -12,9 +12,7 @@ import (
 	"github.com/sirupsen/logrus"
 	"github.com/slackhq/nebula"
 	nc "github.com/slackhq/nebula/config"
-	"github.com/slackhq/nebula/iputil"
 	"github.com/slackhq/nebula/overlay"
-	"github.com/slackhq/nebula/udp"
 	"github.com/slackhq/nebula/util"
 )
 
@@ -109,7 +107,12 @@ func (n *Nebula) ListHostmap(pending bool) (string, error) {
 }
 
 func (n *Nebula) GetHostInfoByVpnIp(vpnIp string, pending bool) (string, error) {
-	b, err := json.Marshal(n.c.GetHostInfoByVpnIp(stringIpToInt(vpnIp), pending))
+	netVpnIp, err := netip.ParseAddr(vpnIp)
+	if err != nil {
+		return "", err
+	}
+
+	b, err := json.Marshal(n.c.GetHostInfoByVpnIp(netVpnIp, pending))
 	if err != nil {
 		return "", err
 	}
@@ -118,16 +121,26 @@ func (n *Nebula) GetHostInfoByVpnIp(vpnIp string, pending bool) (string, error)
 }
 
 func (n *Nebula) CloseTunnel(vpnIp string) bool {
-	return n.c.CloseTunnel(stringIpToInt(vpnIp), false)
+	netVpnIp, err := netip.ParseAddr(vpnIp)
+	if err != nil {
+		return false
+	}
+
+	return n.c.CloseTunnel(netVpnIp, false)
 }
 
 func (n *Nebula) SetRemoteForTunnel(vpnIp string, addr string) (string, error) {
-	udpAddr := udp.NewAddrFromString(addr)
-	if udpAddr == nil {
+	udpAddr, err := netip.ParseAddrPort(addr)
+	if err != nil {
 		return "", errors.New("could not parse udp address")
 	}
 
-	b, err := json.Marshal(n.c.SetRemoteForTunnel(stringIpToInt(vpnIp), *udpAddr))
+	netVpnIp, err := netip.ParseAddr(vpnIp)
+	if err != nil {
+		return "", errors.New("could not parse vpnIp")
+	}
+
+	b, err := json.Marshal(n.c.SetRemoteForTunnel(netVpnIp, udpAddr))
 	if err != nil {
 		return "", err
 	}
@@ -140,7 +153,3 @@ func (n *Nebula) Sleep() {
 		n.l.WithField("tunnels", closed).Info("Sleep called, closed non lighthouse tunnels")
 	}
 }
-
-func stringIpToInt(ip string) iputil.VpnIp {
-	return iputil.Ip2VpnIp(net.ParseIP(ip))
-}

nebula/go.mod

@@ -39,6 +39,7 @@ require (
 	github.com/vishvananda/netlink v1.3.0 // indirect
 	github.com/vishvananda/netns v0.0.4 // indirect
 	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c // indirect
+	golang.org/x/mobile v0.0.0-20241016134751-7ff83004ec2c // indirect
 	golang.org/x/mod v0.21.0 // indirect
 	golang.org/x/net v0.30.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect

nebula/go.sum

@@ -159,6 +159,8 @@ golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7
 golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c h1:7dEasQXItcW1xKJ2+gg5VOiBnqWrJc+rq0DPKyvvdbY=
 golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c/go.mod h1:NQtJDoLvd6faHhE7m4T/1IY708gDefGGjR/iUW8yQQ8=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
+golang.org/x/mobile v0.0.0-20241016134751-7ff83004ec2c h1:zuNS/LWsEpPTLfrmBkis6Xofw3nieAqB4hYLn8+uswk=
+golang.org/x/mobile v0.0.0-20241016134751-7ff83004ec2c/go.mod h1:snk1Mn2ZpdKCt90JPEsDh4sL3ReK520U2t0d7RHBnSU=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=