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route.go
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route.go
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package server
import (
"net/netip"
"unicode/utf8"
"github.com/rs/xid"
"github.com/netbirdio/netbird/management/proto"
"github.com/netbirdio/netbird/management/server/activity"
"github.com/netbirdio/netbird/management/server/status"
"github.com/netbirdio/netbird/route"
)
// GetRoute gets a route object from account and route IDs
func (am *DefaultAccountManager) GetRoute(accountID string, routeID route.ID, userID string) (*route.Route, error) {
unlock := am.Store.AcquireAccountWriteLock(accountID)
defer unlock()
account, err := am.Store.GetAccount(accountID)
if err != nil {
return nil, err
}
user, err := account.FindUser(userID)
if err != nil {
return nil, err
}
if !(user.HasAdminPower() || user.IsServiceUser) {
return nil, status.Errorf(status.PermissionDenied, "only users with admin power can view Network Routes")
}
wantedRoute, found := account.Routes[routeID]
if found {
return wantedRoute, nil
}
return nil, status.Errorf(status.NotFound, "route with ID %s not found", routeID)
}
// checkRoutePrefixExistsForPeers checks if a route with a given prefix exists for a single peer or multiple peer groups.
func (am *DefaultAccountManager) checkRoutePrefixExistsForPeers(account *Account, peerID string, routeID route.ID, peerGroupIDs []string, prefix netip.Prefix) error {
// routes can have both peer and peer_groups
routesWithPrefix := account.GetRoutesByPrefix(prefix)
// lets remember all the peers and the peer groups from routesWithPrefix
seenPeers := make(map[string]bool)
seenPeerGroups := make(map[string]bool)
for _, prefixRoute := range routesWithPrefix {
// we skip route(s) with the same network ID as we want to allow updating of the existing route
// when create a new route routeID is newly generated so nothing will be skipped
if routeID == prefixRoute.ID {
continue
}
if prefixRoute.Peer != "" {
seenPeers[string(prefixRoute.ID)] = true
}
for _, groupID := range prefixRoute.PeerGroups {
seenPeerGroups[groupID] = true
group := account.GetGroup(groupID)
if group == nil {
return status.Errorf(
status.InvalidArgument, "failed to add route with prefix %s - peer group %s doesn't exist",
prefix.String(), groupID)
}
for _, pID := range group.Peers {
seenPeers[pID] = true
}
}
}
if peerID != "" {
// check that peerID exists and is not in any route as single peer or part of the group
peer := account.GetPeer(peerID)
if peer == nil {
return status.Errorf(status.InvalidArgument, "peer with ID %s not found", peerID)
}
if _, ok := seenPeers[peerID]; ok {
return status.Errorf(status.AlreadyExists,
"failed to add route with prefix %s - peer %s already has this route", prefix.String(), peerID)
}
}
// check that peerGroupIDs are not in any route peerGroups list
for _, groupID := range peerGroupIDs {
group := account.GetGroup(groupID) // we validated the group existent before entering this function, o need to check again.
if _, ok := seenPeerGroups[groupID]; ok {
return status.Errorf(
status.AlreadyExists, "failed to add route with prefix %s - peer group %s already has this route",
prefix.String(), group.Name)
}
// check that the peers from peerGroupIDs groups are not the same peers we saw in routesWithPrefix
for _, id := range group.Peers {
if _, ok := seenPeers[id]; ok {
peer := account.GetPeer(id)
if peer == nil {
return status.Errorf(status.InvalidArgument, "peer with ID %s not found", peerID)
}
return status.Errorf(status.AlreadyExists,
"failed to add route with prefix %s - peer %s from the group %s already has this route",
prefix.String(), peer.Name, group.Name)
}
}
}
return nil
}
// CreateRoute creates and saves a new route
func (am *DefaultAccountManager) CreateRoute(accountID, network, peerID string, peerGroupIDs []string, description string, netID route.NetID, masquerade bool, metric int, groups []string, enabled bool, userID string) (*route.Route, error) {
unlock := am.Store.AcquireAccountWriteLock(accountID)
defer unlock()
account, err := am.Store.GetAccount(accountID)
if err != nil {
return nil, err
}
if peerID != "" && len(peerGroupIDs) != 0 {
return nil, status.Errorf(
status.InvalidArgument,
"peer with ID %s and peers group %s should not be provided at the same time",
peerID, peerGroupIDs)
}
var newRoute route.Route
newRoute.ID = route.ID(xid.New().String())
prefixType, newPrefix, err := route.ParseNetwork(network)
if err != nil {
return nil, status.Errorf(status.InvalidArgument, "failed to parse IP %s", network)
}
if len(peerGroupIDs) > 0 {
err = validateGroups(peerGroupIDs, account.Groups)
if err != nil {
return nil, err
}
}
err = am.checkRoutePrefixExistsForPeers(account, peerID, newRoute.ID, peerGroupIDs, newPrefix)
if err != nil {
return nil, err
}
if metric < route.MinMetric || metric > route.MaxMetric {
return nil, status.Errorf(status.InvalidArgument, "metric should be between %d and %d", route.MinMetric, route.MaxMetric)
}
if utf8.RuneCountInString(string(netID)) > route.MaxNetIDChar || netID == "" {
return nil, status.Errorf(status.InvalidArgument, "identifier should be between 1 and %d", route.MaxNetIDChar)
}
err = validateGroups(groups, account.Groups)
if err != nil {
return nil, err
}
newRoute.Peer = peerID
newRoute.PeerGroups = peerGroupIDs
newRoute.Network = newPrefix
newRoute.NetworkType = prefixType
newRoute.Description = description
newRoute.NetID = netID
newRoute.Masquerade = masquerade
newRoute.Metric = metric
newRoute.Enabled = enabled
newRoute.Groups = groups
if account.Routes == nil {
account.Routes = make(map[route.ID]*route.Route)
}
account.Routes[newRoute.ID] = &newRoute
account.Network.IncSerial()
if err = am.Store.SaveAccount(account); err != nil {
return nil, err
}
am.updateAccountPeers(account)
am.StoreEvent(userID, string(newRoute.ID), accountID, activity.RouteCreated, newRoute.EventMeta())
return &newRoute, nil
}
// SaveRoute saves route
func (am *DefaultAccountManager) SaveRoute(accountID, userID string, routeToSave *route.Route) error {
unlock := am.Store.AcquireAccountWriteLock(accountID)
defer unlock()
if routeToSave == nil {
return status.Errorf(status.InvalidArgument, "route provided is nil")
}
if !routeToSave.Network.IsValid() {
return status.Errorf(status.InvalidArgument, "invalid Prefix %s", routeToSave.Network.String())
}
if routeToSave.Metric < route.MinMetric || routeToSave.Metric > route.MaxMetric {
return status.Errorf(status.InvalidArgument, "metric should be between %d and %d", route.MinMetric, route.MaxMetric)
}
if utf8.RuneCountInString(string(routeToSave.NetID)) > route.MaxNetIDChar || routeToSave.NetID == "" {
return status.Errorf(status.InvalidArgument, "identifier should be between 1 and %d", route.MaxNetIDChar)
}
account, err := am.Store.GetAccount(accountID)
if err != nil {
return err
}
if routeToSave.Peer != "" && len(routeToSave.PeerGroups) != 0 {
return status.Errorf(status.InvalidArgument, "peer with ID and peer groups should not be provided at the same time")
}
if len(routeToSave.PeerGroups) > 0 {
err = validateGroups(routeToSave.PeerGroups, account.Groups)
if err != nil {
return err
}
}
err = am.checkRoutePrefixExistsForPeers(account, routeToSave.Peer, routeToSave.ID, routeToSave.Copy().PeerGroups, routeToSave.Network)
if err != nil {
return err
}
err = validateGroups(routeToSave.Groups, account.Groups)
if err != nil {
return err
}
account.Routes[routeToSave.ID] = routeToSave
account.Network.IncSerial()
if err = am.Store.SaveAccount(account); err != nil {
return err
}
am.updateAccountPeers(account)
am.StoreEvent(userID, string(routeToSave.ID), accountID, activity.RouteUpdated, routeToSave.EventMeta())
return nil
}
// DeleteRoute deletes route with routeID
func (am *DefaultAccountManager) DeleteRoute(accountID string, routeID route.ID, userID string) error {
unlock := am.Store.AcquireAccountWriteLock(accountID)
defer unlock()
account, err := am.Store.GetAccount(accountID)
if err != nil {
return err
}
routy := account.Routes[routeID]
if routy == nil {
return status.Errorf(status.NotFound, "route with ID %s doesn't exist", routeID)
}
delete(account.Routes, routeID)
account.Network.IncSerial()
if err = am.Store.SaveAccount(account); err != nil {
return err
}
am.StoreEvent(userID, string(routy.ID), accountID, activity.RouteRemoved, routy.EventMeta())
am.updateAccountPeers(account)
return nil
}
// ListRoutes returns a list of routes from account
func (am *DefaultAccountManager) ListRoutes(accountID, userID string) ([]*route.Route, error) {
unlock := am.Store.AcquireAccountWriteLock(accountID)
defer unlock()
account, err := am.Store.GetAccount(accountID)
if err != nil {
return nil, err
}
user, err := account.FindUser(userID)
if err != nil {
return nil, err
}
if !(user.HasAdminPower() || user.IsServiceUser) {
return nil, status.Errorf(status.PermissionDenied, "only users with admin power can view Network Routes")
}
routes := make([]*route.Route, 0, len(account.Routes))
for _, item := range account.Routes {
routes = append(routes, item)
}
return routes, nil
}
func toProtocolRoute(route *route.Route) *proto.Route {
return &proto.Route{
ID: string(route.ID),
NetID: string(route.NetID),
Network: route.Network.String(),
NetworkType: int64(route.NetworkType),
Peer: route.Peer,
Metric: int64(route.Metric),
Masquerade: route.Masquerade,
}
}
func toProtocolRoutes(routes []*route.Route) []*proto.Route {
protoRoutes := make([]*proto.Route, 0)
for _, r := range routes {
protoRoutes = append(protoRoutes, toProtocolRoute(r))
}
return protoRoutes
}