81 lines
3.2 KiB
Go
81 lines
3.2 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// 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"
|
|
)
|
|
|
|
type LoginFlags int
|
|
|
|
const (
|
|
LoginDefault = LoginFlags(0)
|
|
LoginInteractive = LoginFlags(1 << iota) // force user login and key refresh
|
|
)
|
|
|
|
// 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.
|
|
type Client interface {
|
|
// SetStatusFunc provides a callback to call when control sends us
|
|
// a message.
|
|
SetStatusFunc(func(Status))
|
|
// 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).
|
|
Login(*tailcfg.Oauth2Token, LoginFlags)
|
|
// StartLogout starts an asynchronous logout process.
|
|
// When it finishes, the Status callback will be called while
|
|
// AuthCantContinue()==true.
|
|
StartLogout()
|
|
// 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)
|
|
// UpdateEndpoints changes the Endpoint structure that will be sent
|
|
// in subsequent node registration requests.
|
|
// TODO: localPort seems to be obsolete, remove it.
|
|
// 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(localPort uint16, endpoints []tailcfg.Endpoint)
|
|
// SetDNS sends the SetDNSRequest request to the control plane server,
|
|
// requesting a DNS record be created or updated.
|
|
SetDNS(context.Context, *tailcfg.SetDNSRequest) error
|
|
}
|