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Do not start DNS forwarder on client side (#3094)

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This commit is contained in:
Zoltan Papp 2024-12-20 16:20:50 +01:00 committed by GitHub
parent ddc365f7a0
commit 82b4e58ad0
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1 changed files with 32 additions and 12 deletions
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44
client/internal/engine.go
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@ -802,14 +802,12 @@ func (e *Engine) updateNetworkMap(networkMap *mgmProto.NetworkMap) error {
e.acl.ApplyFiltering(networkMap)
}
var dnsRouteFeatureFlag bool
if networkMap.PeerConfig != nil {
dnsRouteFeatureFlag = networkMap.PeerConfig.RoutingPeerDnsResolutionEnabled
}
routedDomains, routes := toRoutes(networkMap.GetRoutes())
e.updateDNSForwarder(dnsRouteFeatureFlag, routedDomains)
// DNS forwarder
dnsRouteFeatureFlag := toDNSFeatureFlag(networkMap)
dnsRouteDomains := toRouteDomains(e.config.WgPrivateKey.PublicKey().String(), networkMap.GetRoutes())
e.updateDNSForwarder(dnsRouteFeatureFlag, dnsRouteDomains)
routes := toRoutes(networkMap.GetRoutes())
if err := e.routeManager.UpdateRoutes(serial, routes, dnsRouteFeatureFlag); err != nil {
log.Errorf("failed to update clientRoutes, err: %v", err)
}
@ -874,12 +872,18 @@ func (e *Engine) updateNetworkMap(networkMap *mgmProto.NetworkMap) error {
return nil
}
func toRoutes(protoRoutes []*mgmProto.Route) ([]string, []*route.Route) {
func toDNSFeatureFlag(networkMap *mgmProto.NetworkMap) bool {
if networkMap.PeerConfig != nil {
return networkMap.PeerConfig.RoutingPeerDnsResolutionEnabled
}
return false
}
func toRoutes(protoRoutes []*mgmProto.Route) []*route.Route {
if protoRoutes == nil {
protoRoutes = []*mgmProto.Route{}
}
var dnsRoutes []string
routes := make([]*route.Route, 0)
for _, protoRoute := range protoRoutes {
var prefix netip.Prefix
@ -890,7 +894,6 @@ func toRoutes(protoRoutes []*mgmProto.Route) ([]string, []*route.Route) {
continue
}
}
dnsRoutes = append(dnsRoutes, protoRoute.Domains...)
convertedRoute := &route.Route{
ID: route.ID(protoRoute.ID),
@ -905,7 +908,24 @@ func toRoutes(protoRoutes []*mgmProto.Route) ([]string, []*route.Route) {
}
routes = append(routes, convertedRoute)
}
return dnsRoutes, routes
return routes
}
func toRouteDomains(myPubKey string, protoRoutes []*mgmProto.Route) []string {
if protoRoutes == nil {
protoRoutes = []*mgmProto.Route{}
}
var dnsRoutes []string
for _, protoRoute := range protoRoutes {
if len(protoRoute.Domains) == 0 {
continue
}
if protoRoute.Peer == myPubKey {
dnsRoutes = append(dnsRoutes, protoRoute.Domains...)
}
}
return dnsRoutes
}
func toDNSConfig(protoDNSConfig *mgmProto.DNSConfig) nbdns.Config {
@ -1243,7 +1263,7 @@ func (e *Engine) readInitialSettings() ([]*route.Route, *nbdns.Config, error) {
if err != nil {
return nil, nil, err
}
_, routes := toRoutes(netMap.GetRoutes())
routes := toRoutes(netMap.GetRoutes())
dnsCfg := toDNSConfig(netMap.GetDNSConfig())
return routes, &dnsCfg, nil
}