Add route management for Android interface (#801)

Support client route management feature on Android

client/internal/routemanager/server.go

@@ -1,67 +0,0 @@
-package routemanager
-
-import (
-	"github.com/netbirdio/netbird/route"
-	log "github.com/sirupsen/logrus"
-	"net/netip"
-	"sync"
-)
-
-type serverRouter struct {
-	routes map[string]*route.Route
-	// best effort to keep net forward configuration as it was
-	netForwardHistoryEnabled bool
-	mux                      sync.Mutex
-	firewall                 firewallManager
-}
-
-type routerPair struct {
-	ID          string
-	source      string
-	destination string
-	masquerade  bool
-}
-
-func routeToRouterPair(source string, route *route.Route) routerPair {
-	parsed := netip.MustParsePrefix(source).Masked()
-	return routerPair{
-		ID:          route.ID,
-		source:      parsed.String(),
-		destination: route.Network.Masked().String(),
-		masquerade:  route.Masquerade,
-	}
-}
-
-func (m *DefaultManager) removeFromServerNetwork(route *route.Route) error {
-	select {
-	case <-m.ctx.Done():
-		log.Infof("not removing from server network because context is done")
-		return m.ctx.Err()
-	default:
-		m.serverRouter.mux.Lock()
-		defer m.serverRouter.mux.Unlock()
-		err := m.serverRouter.firewall.RemoveRoutingRules(routeToRouterPair(m.wgInterface.Address().String(), route))
-		if err != nil {
-			return err
-		}
-		delete(m.serverRouter.routes, route.ID)
-		return nil
-	}
-}
-
-func (m *DefaultManager) addToServerNetwork(route *route.Route) error {
-	select {
-	case <-m.ctx.Done():
-		log.Infof("not adding to server network because context is done")
-		return m.ctx.Err()
-	default:
-		m.serverRouter.mux.Lock()
-		defer m.serverRouter.mux.Unlock()
-		err := m.serverRouter.firewall.InsertRoutingRules(routeToRouterPair(m.wgInterface.Address().String(), route))
-		if err != nil {
-			return err
-		}
-		m.serverRouter.routes[route.ID] = route
-		return nil
-	}
-}