Implemented the forwarding of packets between meshes

pkg/route/route.go

@@ -0,0 +1,47 @@
+package route
+
+import (
+	"net"
+	"os/exec"
+
+	logging "github.com/tim-beatham/wgmesh/pkg/log"
+)
+
+type RouteInstaller interface {
+	InstallRoutes(devName string, routes ...*net.IPNet) error
+}
+
+type RouteInstallerImpl struct{}
+
+// InstallRoutes: installs a route into the routing table
+func (r *RouteInstallerImpl) InstallRoutes(devName string, routes ...*net.IPNet) error {
+	for _, route := range routes {
+		err := r.installRoute(devName, route)
+
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// installRoute: installs a route into the linux table
+func (r *RouteInstallerImpl) installRoute(devName string, route *net.IPNet) error {
+	// TODO: Find a library that automates this
+	cmd := exec.Command("/usr/bin/ip", "-6", "route", "add", route.String(), "dev", devName)
+
+	logging.Log.WriteInfof("%s %s", route.String(), devName)
+
+	if msg, err := cmd.CombinedOutput(); err != nil {
+		logging.Log.WriteErrorf(err.Error())
+		logging.Log.WriteErrorf(string(msg))
+		return err
+	}
+
+	return nil
+}
+
+func NewRouteInstaller() RouteInstaller {
+	return &RouteInstallerImpl{}
+}