Add dbus Test

internal/networkd/dbus/link.go

@@ -0,0 +1,48 @@
+package dbus
+
+import (
+	"fmt"
+
+	"github.com/godbus/dbus/v5"
+	"golang.org/x/exp/slog"
+)
+
+type Link struct {
+	Name             string `json:"name"`
+	CarrierState     string `json:"carrier_state"`
+	OperationalState string `json:"operational_state"`
+}
+
+func GetLinks(dbusConn dbus.Conn) ([]Link, error) {
+	managerObj := dbusConn.Object("org.freedesktop.network1", dbus.ObjectPath("/org/freedesktop/network1"))
+
+	var links [][]any
+	err := managerObj.Call("org.freedesktop.network1.Manager.ListLinks", 0).Store(&links)
+	if err != nil {
+		return nil, fmt.Errorf("Calling ListLinks %w", err)
+	}
+	slog.Info("Dbus Result", "links", links)
+
+	result := []Link{}
+
+	for _, link := range links {
+		name := link[1].(string)
+		path := link[2].(string)
+		linkObj := dbusConn.Object("org.freedesktop.network1", dbus.ObjectPath(path))
+		carrierState, err := linkObj.GetProperty("CarrierState")
+		if err != nil {
+			return nil, fmt.Errorf("GetProperty CarrierState %w", err)
+		}
+		operationalState, err := linkObj.GetProperty("OperationalState")
+		if err != nil {
+			return nil, fmt.Errorf("GetProperty OperationalState %w", err)
+		}
+		result = append(result, Link{
+			Name:             name,
+			CarrierState:     carrierState.String(),
+			OperationalState: operationalState.String(),
+		})
+	}
+
+	return result, nil
+}