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ipn: clear the hostinfo.Services list when prefs.ShieldsUp==true.

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When shields are up, no services are available to connect to, so hide
them all. This will also help them disappear from the UI menu on
other nodes.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
This commit is contained in:
Avery Pennarun 2020-04-29 05:23:29 -04:00
parent d7429b9a8d
commit ced9b4008a
1 changed files with 25 additions and 12 deletions
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37
ipn/local.go
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@ -93,7 +93,7 @@ func NewLocalBackend(logf logger.Logf, logid string, store StateStore, e wgengin
if b.portpoll != nil {
go b.portpoll.Run(ctx)
go b.runPoller()
go b.readPoller()
}
return b, nil
@ -370,7 +370,7 @@ func (b *LocalBackend) updateFilter(netMap *controlclient.NetworkMap) {
}
}
func (b *LocalBackend) runPoller() {
func (b *LocalBackend) readPoller() {
for {
ports, ok := <-b.portpoll.C
if !ok {
@ -394,16 +394,11 @@ func (b *LocalBackend) runPoller() {
// is started (by NewLocalBackend) before the Start call.
b.hiCache = new(tailcfg.Hostinfo)
}
b.hiCache.Services = sl
hi := b.hiCache
hi.Services = sl
b.hiCache = hi
cli := b.c
b.mu.Unlock()
// b.c might not be started yet
if cli != nil {
cli.SetHostinfo(hi)
}
b.doSetHostinfoFilterServices(hi)
}
}
@ -606,13 +601,12 @@ func (b *LocalBackend) SetPrefs(new *Prefs) {
newHi := oldHi.Clone()
newHi.RoutableIPs = append([]wgcfg.CIDR(nil), b.prefs.AdvertiseRoutes...)
b.hiCache = newHi
cli := b.c
b.mu.Unlock()
b.logf("SetPrefs: %v", new.Pretty())
if cli != nil && !oldHi.Equal(newHi) {
cli.SetHostinfo(newHi)
if old.ShieldsUp != new.ShieldsUp || !oldHi.Equal(newHi) {
b.doSetHostinfoFilterServices(newHi)
}
b.updateFilter(b.netMapCache)
@ -626,6 +620,25 @@ func (b *LocalBackend) SetPrefs(new *Prefs) {
b.send(Notify{Prefs: new})
}
func (b *LocalBackend) doSetHostinfoFilterServices(hi *tailcfg.Hostinfo) {
hi2 := *hi
prefs := b.Prefs()
if prefs != nil && prefs.ShieldsUp {
// No local services are available, since ShieldsUp will block
// them all.
hi2.Services = []tailcfg.Service{}
}
b.mu.Lock()
cli := b.c
b.mu.Unlock()
// b.c might not be started yet
if cli != nil {
cli.SetHostinfo(&hi2)
}
}
// Note: return value may be nil, if we haven't received a netmap yet.
func (b *LocalBackend) NetMap() *controlclient.NetworkMap {
return b.netMapCache