Update dependencies

vendor/tailscale.com/control/controlclient/client.go

@@ -0,0 +1,90 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// Package controlclient implements the client for the Tailscale
+// control plane.
+//
+// It handles authentication, port picking, and collects the local
+// network configuration.
+package controlclient
+
+import (
+	"context"
+
+	"tailscale.com/tailcfg"
+)
+
+// LoginFlags is a bitmask of options to change the behavior of Client.Login
+// and LocalBackend.
+type LoginFlags int
+
+const (
+	LoginDefault     = LoginFlags(0)
+	LoginInteractive = LoginFlags(1 << iota) // force user login and key refresh
+	LoginEphemeral                           // set RegisterRequest.Ephemeral
+
+	// LocalBackendStartKeyOSNeutral instructs NewLocalBackend to start the
+	// LocalBackend without any OS-dependent StateStore StartKey behavior.
+	//
+	// See https://github.com/tailscale/tailscale/issues/6973.
+	LocalBackendStartKeyOSNeutral
+)
+
+// Client represents a client connection to the control server.
+// Currently this is done through a pair of polling https requests in
+// the Auto client, but that might change eventually.
+//
+// The Client must be comparable as it is used by the Observer to detect stale
+// clients.
+type Client interface {
+	// Shutdown closes this session, which should not be used any further
+	// afterwards.
+	Shutdown()
+	// Login begins an interactive or non-interactive login process.
+	// Client will eventually call the Status callback with either a
+	// LoginFinished flag (on success) or an auth URL (if further
+	// interaction is needed). It merely sets the process in motion,
+	// and doesn't wait for it to complete.
+	Login(LoginFlags)
+	// Logout starts a synchronous logout process. It doesn't return
+	// until the logout operation has been completed.
+	Logout(context.Context) error
+	// SetPaused pauses or unpauses the controlclient activity as much
+	// as possible, without losing its internal state, to minimize
+	// unnecessary network activity.
+	// TODO: It might be better to simply shutdown the controlclient and
+	// make a new one when it's time to unpause.
+	SetPaused(bool)
+	// AuthCantContinue returns whether authentication is blocked. If it
+	// is, you either need to visit the auth URL (previously sent in a
+	// Status callback) or call the Login function appropriately.
+	// TODO: this probably belongs in the Status itself instead.
+	AuthCantContinue() bool
+	// SetHostinfo changes the Hostinfo structure that will be sent in
+	// subsequent node registration requests.
+	// TODO: a server-side change would let us simply upload this
+	// in a separate http request. It has nothing to do with the rest of
+	// the state machine.
+	SetHostinfo(*tailcfg.Hostinfo)
+	// SetNetinfo changes the NetIinfo structure that will be sent in
+	// subsequent node registration requests.
+	// TODO: a server-side change would let us simply upload this
+	// in a separate http request. It has nothing to do with the rest of
+	// the state machine.
+	SetNetInfo(*tailcfg.NetInfo)
+	// SetTKAHead changes the TKA head hash value that will be sent in
+	// subsequent netmap requests.
+	SetTKAHead(headHash string)
+	// UpdateEndpoints changes the Endpoint structure that will be sent
+	// in subsequent node registration requests.
+	// TODO: a server-side change would let us simply upload this
+	// in a separate http request. It has nothing to do with the rest of
+	// the state machine.
+	UpdateEndpoints(endpoints []tailcfg.Endpoint)
+}
+
+// UserVisibleError is an error that should be shown to users.
+type UserVisibleError string
+
+func (e UserVisibleError) Error() string            { return string(e) }
+func (e UserVisibleError) UserVisibleError() string { return string(e) }