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tailscale/types/persist/persist.go

108 lines
3.2 KiB
Go

// Copyright (c) 2021 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 persist contains the Persist type.
package persist
import (
"fmt"
"reflect"
"tailscale.com/tailcfg"
"tailscale.com/types/key"
"tailscale.com/types/structs"
)
//go:generate go run tailscale.com/cmd/viewer -type=Persist
// Persist is the JSON type stored on disk on nodes to remember their
// settings between runs. This is stored as part of ipn.Prefs and is
// persisted per ipn.LoginProfile.
type Persist struct {
_ structs.Incomparable
// LegacyFrontendPrivateMachineKey is here temporarily
// (starting 2020-09-28) during migration of Windows users'
// machine keys from frontend storage to the backend. On the
// first LocalBackend.Start call, the backend will initialize
// the real (backend-owned) machine key from the frontend's
// provided value (if non-zero), picking a new random one if
// needed. This field should be considered read-only from GUI
// frontends. The real value should not be written back in
// this field, lest the frontend persist it to disk.
LegacyFrontendPrivateMachineKey key.MachinePrivate `json:"PrivateMachineKey"`
PrivateNodeKey key.NodePrivate
OldPrivateNodeKey key.NodePrivate // needed to request key rotation
Provider string
LoginName string
UserProfile tailcfg.UserProfile
NetworkLockKey key.NLPrivate
NodeID tailcfg.StableNodeID
// DisallowedTKAStateIDs stores the tka.State.StateID values which
// this node will not operate network lock on. This is used to
// prevent bootstrapping TKA onto a key authority which was forcibly
// disabled.
DisallowedTKAStateIDs []string `json:",omitempty"`
}
// PublicNodeKey returns the public key for the node key.
func (p *Persist) PublicNodeKey() key.NodePublic {
return p.PrivateNodeKey.Public()
}
// PublicNodeKey returns the public key for the node key.
func (p PersistView) PublicNodeKey() key.NodePublic {
return p.ж.PublicNodeKey()
}
func (p PersistView) Equals(p2 PersistView) bool {
return p.ж.Equals(p2.ж)
}
func nilIfEmpty[E any](s []E) []E {
if len(s) == 0 {
return nil
}
return s
}
func (p *Persist) Equals(p2 *Persist) bool {
if p == nil && p2 == nil {
return true
}
if p == nil || p2 == nil {
return false
}
return p.LegacyFrontendPrivateMachineKey.Equal(p2.LegacyFrontendPrivateMachineKey) &&
p.PrivateNodeKey.Equal(p2.PrivateNodeKey) &&
p.OldPrivateNodeKey.Equal(p2.OldPrivateNodeKey) &&
p.Provider == p2.Provider &&
p.LoginName == p2.LoginName &&
p.UserProfile == p2.UserProfile &&
p.NetworkLockKey.Equal(p2.NetworkLockKey) &&
p.NodeID == p2.NodeID &&
reflect.DeepEqual(nilIfEmpty(p.DisallowedTKAStateIDs), nilIfEmpty(p2.DisallowedTKAStateIDs))
}
func (p *Persist) Pretty() string {
var (
mk key.MachinePublic
ok, nk key.NodePublic
)
if !p.LegacyFrontendPrivateMachineKey.IsZero() {
mk = p.LegacyFrontendPrivateMachineKey.Public()
}
if !p.OldPrivateNodeKey.IsZero() {
ok = p.OldPrivateNodeKey.Public()
}
if !p.PrivateNodeKey.IsZero() {
nk = p.PublicNodeKey()
}
return fmt.Sprintf("Persist{lm=%v, o=%v, n=%v u=%#v}",
mk.ShortString(), ok.ShortString(), nk.ShortString(), p.LoginName)
}