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ipn: replace web client debug flag with node capability

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Updates tailscale/corp#14335

Signed-off-by: Will Norris <will@tailscale.com>
This commit is contained in:
Will Norris 2023-10-31 11:41:39 -07:00 committed by Will Norris
parent bd488e4ff8
commit 66c7af3dd3
4 changed files with 6 additions and 12 deletions
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4
cmd/tailscaled/tailscaled.go
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@ -570,9 +570,7 @@ func getLocalBackend(ctx context.Context, logf logger.Logf, logID logid.PublicID
if root := lb.TailscaleVarRoot(); root != "" {
dnsfallback.SetCachePath(filepath.Join(root, "derpmap.cached.json"), logf)
}
if envknob.Bool("TS_DEBUG_WEB_UI") {
lb.SetWebLocalClient(&tailscale.LocalClient{Socket: args.socketpath, UseSocketOnly: args.socketpath != ""})
}
lb.SetWebLocalClient(&tailscale.LocalClient{Socket: args.socketpath, UseSocketOnly: args.socketpath != ""})
configureTaildrop(logf, lb)
if err := ns.Start(lb); err != nil {
log.Fatalf("failed to start netstack: %v", err)

7
ipn/ipnlocal/local.go
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@ -2920,11 +2920,6 @@ func (b *LocalBackend) EditPrefs(mp *ipn.MaskedPrefs) (ipn.PrefsView, error) {
b.logf("EditPrefs requests SSH, but disabled by envknob; returning error")
return ipn.PrefsView{}, errors.New("Tailscale SSH server administratively disabled.")
}
if p1.RunWebClient && !envknob.Bool("TS_DEBUG_WEB_UI") {
b.mu.Unlock()
b.logf("EditPrefs requests web client, but disabled by envknob; returning error")
return ipn.PrefsView{}, errors.New("web ui flag not set")
}
if p1.View().Equals(p0) {
b.mu.Unlock()
return stripKeysFromPrefs(p0), nil
@ -4161,7 +4156,7 @@ func (b *LocalBackend) ResetForClientDisconnect() {
func (b *LocalBackend) ShouldRunSSH() bool { return b.sshAtomicBool.Load() && envknob.CanSSHD() }
func (b *LocalBackend) ShouldRunWebClient() bool {
return b.webclientAtomicBool.Load() && envknob.Bool("TS_DEBUG_WEB_UI")
return b.webclientAtomicBool.Load() && hasCapability(b.netMap, tailcfg.CapabilityPreviewWebClient)
}
// ShouldHandleViaIP reports whether ip is an IPv6 address in the

6
ipn/ipnlocal/web_client.go
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@ -13,8 +13,8 @@
"tailscale.com/client/tailscale"
"tailscale.com/client/web"
"tailscale.com/envknob"
"tailscale.com/net/netutil"
"tailscale.com/tailcfg"
)
// webClient holds state for the web interface for managing
@ -41,8 +41,8 @@ func (b *LocalBackend) SetWebLocalClient(lc *tailscale.LocalClient) {
// tailscaled instance.
// If the web interface is already running, WebClientInit is a no-op.
func (b *LocalBackend) WebClientInit() (err error) {
if !envknob.Bool("TS_DEBUG_WEB_UI") {
return errors.New("web ui flag unset")
if !hasCapability(b.netMap, tailcfg.CapabilityPreviewWebClient) {
return errors.New("web client not enabled for this device")
}
b.mu.Lock()

1
tailcfg/tailcfg.go
View File

@ -2040,6 +2040,7 @@ type Oauth2Token struct {
CapabilityDataPlaneAuditLogs NodeCapability = "https://tailscale.com/cap/data-plane-audit-logs" // feature enabled
CapabilityDebug NodeCapability = "https://tailscale.com/cap/debug" // exposes debug endpoints over the PeerAPI
CapabilityHTTPS NodeCapability = "https" // https cert provisioning enabled on tailnet
CapabilityPreviewWebClient NodeCapability = "preview-webclient" // allows starting web client in tailscaled
// CapabilityBindToInterfaceByRoute changes how Darwin nodes create
// sockets (in the net/netns package). See that package for more