mirror of
https://github.com/netbirdio/netbird.git
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106 lines
2.2 KiB
Go
106 lines
2.2 KiB
Go
package routemanager
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import (
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"runtime"
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"sort"
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"strings"
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"sync"
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"github.com/netbirdio/netbird/client/internal/listener"
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"github.com/netbirdio/netbird/route"
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)
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type notifier struct {
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initialRouteRanges []string
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routeRanges []string
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listener listener.NetworkChangeListener
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listenerMux sync.Mutex
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}
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func newNotifier() *notifier {
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return ¬ifier{}
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}
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func (n *notifier) setListener(listener listener.NetworkChangeListener) {
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n.listenerMux.Lock()
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defer n.listenerMux.Unlock()
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n.listener = listener
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}
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func (n *notifier) setInitialClientRoutes(clientRoutes []*route.Route) {
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nets := make([]string, 0)
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for _, r := range clientRoutes {
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nets = append(nets, r.Network.String())
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}
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sort.Strings(nets)
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n.initialRouteRanges = nets
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}
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func (n *notifier) onNewRoutes(idMap route.HAMap) {
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newNets := make([]string, 0)
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for _, routes := range idMap {
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for _, r := range routes {
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newNets = append(newNets, r.Network.String())
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}
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}
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sort.Strings(newNets)
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switch runtime.GOOS {
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case "android":
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if !n.hasDiff(n.initialRouteRanges, newNets) {
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return
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}
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default:
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if !n.hasDiff(n.routeRanges, newNets) {
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return
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}
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}
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n.routeRanges = newNets
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n.notify()
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}
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func (n *notifier) notify() {
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n.listenerMux.Lock()
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defer n.listenerMux.Unlock()
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if n.listener == nil {
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return
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}
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go func(l listener.NetworkChangeListener) {
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l.OnNetworkChanged(strings.Join(addIPv6RangeIfNeeded(n.routeRanges), ","))
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}(n.listener)
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}
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func (n *notifier) hasDiff(a []string, b []string) bool {
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if len(a) != len(b) {
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return true
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}
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for i, v := range a {
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if v != b[i] {
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return true
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}
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}
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return false
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}
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func (n *notifier) getInitialRouteRanges() []string {
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return addIPv6RangeIfNeeded(n.initialRouteRanges)
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}
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// addIPv6RangeIfNeeded returns the input ranges with the default IPv6 range when there is an IPv4 default route.
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func addIPv6RangeIfNeeded(inputRanges []string) []string {
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ranges := inputRanges
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for _, r := range inputRanges {
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// we are intentionally adding the ipv6 default range in case of ipv4 default range
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// to ensure that all traffic is managed by the tunnel interface on android
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if r == "0.0.0.0/0" {
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ranges = append(ranges, "::/0")
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break
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}
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}
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return ranges
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}
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