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cmd/tailscaled: add -state=mem: to support creation of an ephemeral node.

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RELNOTE=`tailscaled --state=mem:` registers as an ephemeral node and
does not store state to disk.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2022-02-18 12:55:22 -08:00
committed by Maisem Ali
parent 823d970d60
commit f9a50779e2
12 changed files with 46 additions and 18 deletions
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17
ipn/ipnlocal/local.go
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@@ -136,6 +136,7 @@ type LocalBackend struct {
prevIfState *interfaces.State
peerAPIServer *peerAPIServer // or nil
peerAPIListeners []*peerAPIListener
loginFlags controlclient.LoginFlags
incomingFiles map[*incomingFile]bool
// directFileRoot, if non-empty, means to write received files
// directly to this directory, without staging them in an
@@ -166,7 +167,7 @@ type clientGen func(controlclient.Options) (controlclient.Client, error)
// but is not actually running.
//
// If dialer is nil, a new one is made.
func NewLocalBackend(logf logger.Logf, logid string, store ipn.StateStore, dialer *tsdial.Dialer, e wgengine.Engine) (*LocalBackend, error) {
func NewLocalBackend(logf logger.Logf, logid string, store ipn.StateStore, dialer *tsdial.Dialer, e wgengine.Engine, loginFlags controlclient.LoginFlags) (*LocalBackend, error) {
if e == nil {
panic("ipn.NewLocalBackend: engine must not be nil")
}
@@ -199,6 +200,7 @@ func NewLocalBackend(logf logger.Logf, logid string, store ipn.StateStore, diale
state: ipn.NoState,
portpoll: portpoll,
gotPortPollRes: make(chan struct{}),
loginFlags: loginFlags,
}
// Default filter blocks everything and logs nothing, until Start() is called.
@@ -1569,13 +1571,14 @@ func (b *LocalBackend) InServerMode() bool {
}
// Login implements Backend.
// As of 2022-02-17, this is only exists for tests.
func (b *LocalBackend) Login(token *tailcfg.Oauth2Token) {
b.mu.Lock()
b.assertClientLocked()
cc := b.cc
b.mu.Unlock()
cc.Login(token, controlclient.LoginInteractive)
cc.Login(token, b.loginFlags|controlclient.LoginInteractive)
}
// StartLoginInteractive implements Backend. It requests a new
@@ -1594,15 +1597,7 @@ func (b *LocalBackend) StartLoginInteractive() {
if url != "" {
b.popBrowserAuthNow()
} else {
flags := controlclient.LoginInteractive
if runtime.GOOS == "js" {
// The js/wasm client has no state storage so for now
// treat all interactive logins as ephemeral.
// TODO(bradfitz): if we start using browser LocalStorage
// or something, then rethink this.
flags |= controlclient.LoginEphemeral
}
cc.Login(nil, flags)
cc.Login(nil, b.loginFlags|controlclient.LoginInteractive)
}
}