embed IPNet for MarshalJSON

init.go

@@ -25,8 +25,8 @@ func Init() {
 		Domain: "dsnet",
 	}
 
-	fmt.Println(conf.Network.String())
-	fmt.Printf("%-+v/n",conf)
+	//fmt.Println(conf.Network.String())
+	//fmt.Printf("%-+v/n",conf)
 
 	_json, _ := json.MarshalIndent(conf, "", "    ")
 
@@ -35,13 +35,15 @@ func Init() {
 
 // get a random /22 subnet on 10.0.0.0 (1023 hosts) (or /24?)
 // TODO also the 20 bit block and 16 bit block?
-func getRandomNetwork() net.IPNet {
+func getRandomNetwork() IPNet {
 	rbs := make([]byte, 2)
 	rand.Seed(time.Now().UTC().UnixNano())
 	rand.Read(rbs)
 
-	return net.IPNet {
-		net.IP{10,rbs[0],rbs[1]<<2,0},
-		net.IPMask{255,255,252,0},
+	return IPNet{
+		net.IPNet {
+			net.IP{10,rbs[0],rbs[1]<<2,0},
+			net.IPMask{255,255,252,0},
+		},
 	}
 }

types.go

@@ -49,10 +49,11 @@ type DsnetConfig struct {
 	Peers []PeerConfig
 	// IP network from which to allocate automatic sequential addresses
 	// Network is chosen randomly when not specified
-	Network net.IPNet         `validate:"required"`
+	Network IPNet             `validate:"required"`
 	// domain to append to hostnames. Relies on separate DNS server for
 	// resolution. Informational only.
 	Domain string             `validate:"required,gte=1,lte=255"`
+	// TODO Default subnets to route via VPN
 }
 
 type Dsnet struct {
@@ -62,3 +63,15 @@ type Dsnet struct {
 	ListenPort int
 	Peers []Peer
 }
+
+type IPNet struct {
+	ipNet net.IPNet
+}
+
+func (n IPNet) MarshalJSON() ([]byte, error) {
+	return []byte("\"" + n.ipNet.String() + "\""), nil
+}
+
+func (n *IPNet) String() string {
+	return n.ipNet.String()
+}