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ipn/ipnlocal: add support for multiple user profiles

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Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2022-11-09 10:58:10 +05:00
committed by Maisem Ali
parent c9d6a9cb4d
commit 4d330bac14
29 changed files with 1106 additions and 436 deletions
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50
ipn/backend.go
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@@ -20,13 +20,13 @@ import (
type State int
const (
NoState = State(iota)
InUseOtherUser
NeedsLogin
NeedsMachineAuth
Stopped
Starting
Running
NoState State = 0
InUseOtherUser State = 1
NeedsLogin State = 2
NeedsMachineAuth State = 3
Stopped State = 4
Starting State = 5
Running State = 6
)
// GoogleIDToken Type is the tailcfg.Oauth2Token.TokenType for the Google
@@ -153,21 +153,8 @@ type PartialFile struct {
}
// StateKey is an opaque identifier for a set of LocalBackend state
// (preferences, private keys, etc.).
//
// The reason we need this is that the Tailscale agent may be running
// on a multi-user machine, in a context where a single daemon is
// shared by several consecutive users. Ideally we would just use the
// username of the connected frontend as the StateKey.
//
// Various platforms currently set StateKey in different ways:
//
// - the macOS/iOS GUI apps set it to "ipn-go-bridge"
// - the Android app sets it to "ipn-android"
// - on Windows, it's the empty string (in client mode) or, via
// LocalBackend.userID, a string like "user-$USER_ID" (used in
// server mode).
// - on Linux/etc, it's always "_daemon" (ipn.GlobalDaemonStateKey)
// (preferences, private keys, etc.). It is also used as a key for
// the various LoginProfiles that the instance may be signed into.
//
// Additionally, the StateKey can be debug setting name:
//
@@ -178,21 +165,10 @@ type StateKey string
type Options struct {
// FrontendLogID is the public logtail id used by the frontend.
FrontendLogID string
// StateKey and Prefs together define the state the backend should
// use:
// - StateKey=="" && Prefs!=nil: use Prefs for internal state,
// don't persist changes in the backend, except for the machine key
// for migration purposes.
// - StateKey!="" && Prefs==nil: load the given backend-side
// state and use/update that.
// - StateKey!="" && Prefs!=nil: like the previous case, but do
// an initial overwrite of backend state with Prefs.
//
// NOTE(apenwarr): The above means that this Prefs field does not do
// what you probably think it does. It will overwrite your encryption
// keys. Do not use unless you know what you're doing.
StateKey StateKey
Prefs *Prefs
// LegacyMigrationPrefs are used to migrate preferences from the
// frontend to the backend.
// If non-nil, they are imported as a new profile.
LegacyMigrationPrefs *Prefs `json:"Prefs"`
// UpdatePrefs, if provided, overrides Options.Prefs *and* the Prefs
// already stored in the backend state, *except* for the Persist
// Persist member. If you just want to provide prefs, this is