nic added

nic/nic.go

@@ -0,0 +1,75 @@
+package nic
+
+import (
+	"net"
+
+	omm "git.loafle.net/overflow/model/meta"
+	omn "git.loafle.net/overflow/model/net"
+	oun "git.loafle.net/overflow/util-go/net"
+	oung "git.loafle.net/overflow/util-go/net/gateway"
+)
+
+func DiscoverGateway() (net.IP, string, error) {
+	return oung.DiscoverGateway()
+}
+
+func DiscoverInterfaces() ([]*omn.Interface, error) {
+	gwIP, gwIface, err := DiscoverGateway()
+	if nil != err {
+		return nil, err
+	}
+
+	netIfaces, err := net.Interfaces()
+	if err != nil {
+		return nil, err
+	}
+
+	ifaces := make([]*omn.Interface, 0)
+
+	for _, netIface := range netIfaces {
+		if netIface.Flags&net.FlagLoopback != 0 || netIface.Flags&net.FlagUp == 0 {
+			continue
+		}
+
+		iface := &omn.Interface{}
+		ifaces = append(ifaces, iface)
+
+		iface.Iface = netIface.Name
+		iface.Mac = netIface.HardwareAddr.String()
+		iface.Addresses = make([]*omn.InterfaceAddress, 0)
+
+		netAddrs, err := netIface.Addrs()
+		if nil != err {
+			continue
+		}
+
+	LOOP_ADDR:
+		for _, netAddr := range netAddrs {
+			_, ipNet, err := oun.ParseCIDR(netAddr.String())
+			if nil != err {
+				continue
+			}
+
+			addr := &omn.InterfaceAddress{}
+			iface.Addresses = append(iface.Addresses, addr)
+			addr.Address = netAddr.String()
+			addr.Netmask = ipNet.Mask.String()
+			addr.Network = ipNet.Network().String()
+
+			if gwIface == netIface.Name {
+				addr.Gateway = gwIP.String()
+			}
+
+			switch ipNet.Version() {
+			case 4:
+				addr.MetaIPType = omm.ToMetaIPType(omm.MetaIPTypeEnumV4)
+			case 6:
+				addr.MetaIPType = omm.ToMetaIPType(omm.MetaIPTypeEnumV6)
+			default:
+				continue LOOP_ADDR
+			}
+		}
+	}
+
+	return ifaces, nil
+}

nic/nic_test.go

@@ -0,0 +1,41 @@
+package nic
+
+import (
+	"log"
+	"testing"
+
+	omm "git.loafle.net/overflow/model/meta"
+)
+
+func TestDiscoverGateway(t *testing.T) {
+	gwIP, gwIface, err := DiscoverGateway()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	t.Log("Gateway found")
+	t.Log("Iface: ", gwIface)
+	t.Log("IP: ", gwIP.String())
+}
+
+func TestDiscoverInterfaces(t *testing.T) {
+	ifaces, err := DiscoverInterfaces()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	t.Log("Interface found:")
+	for _, iface := range ifaces {
+		t.Log("Iface: ", iface.Iface)
+		t.Log("Mac: ", iface.Mac)
+
+		for _, addr := range iface.Addresses {
+			t.Log("- IP version: ", omm.ToMetaIPTypeEnum(addr.MetaIPType).String())
+			t.Log("- IP address: ", addr.Address)
+			t.Log("- Netmask: ", addr.Netmask)
+			t.Log("- Network: ", addr.Network)
+			t.Log("- Gateway: ", addr.Gateway)
+		}
+	}
+
+}