@ -116,11 +116,11 @@ func compareIPNets(a, b []wgcfg.CIDR) bool {
return true
}
func NewPrefs ( ) Prefs {
return Prefs {
// Provide default values for options which are normally
// true, but might be missing from the json data for any
// reason. The json can still override them to false.
func NewPrefs ( ) * Prefs {
return & Prefs {
// Provide default values for options which might be missing
// from the json data for any reason. The json can still
// override them to false.
ControlURL : "https://login.tailscale.com" ,
RouteAll : true ,
AllowSingleHosts : true ,
@ -130,7 +130,10 @@ func NewPrefs() Prefs {
}
}
func PrefsFromBytes ( b [ ] byte , enforceDefaults bool ) ( Prefs , error ) {
// PrefsFromBytes deserializes Prefs from a JSON blob. If
// enforceDefaults is true, Prefs.RouteAll and Prefs.AllowSingleHosts
// are forced on.
func PrefsFromBytes ( b [ ] byte , enforceDefaults bool ) ( * Prefs , error ) {
p := NewPrefs ( )
if len ( b ) == 0 {
return p , nil
@ -146,11 +149,6 @@ func PrefsFromBytes(b []byte, enforceDefaults bool) (Prefs, error) {
log . Printf ( "Prefs parse: %v: %v\n" , err , b )
}
}
if p . ControlURL == "" {
// TODO(danderson): compat shim, remove after
// Options.ServerURL has been gone for a release.
p . ControlURL = "https://login.tailscale.com"
}
if enforceDefaults {
p . RouteAll = true
p . AllowSingleHosts = true
@ -158,48 +156,28 @@ func PrefsFromBytes(b []byte, enforceDefaults bool) (Prefs, error) {
return p , err
}
// Copy returns a deep copy of p.
func ( p * Prefs ) Copy ( ) * Prefs {
p2 , err := PrefsFromBytes ( p . ToBytes ( ) , false )
if err != nil {
log . Fatalf ( "Prefs was uncopyable: %v\n" , err )
}
return & p2
return p2
}
func LoadPrefs ( filename string , enforceDefaults bool ) * Prefs {
log . Printf ( "Loading prefs %v\n" , filename )
// LoadLegacyPrefs loads a legacy relaynode config file into Prefs
// with sensible migration defaults set. If enforceDefaults is true,
// Prefs.RouteAll and Prefs.AllowSingleHosts are forced on.
func LoadPrefs ( filename string , enforceDefaults bool ) ( * Prefs , error ) {
data , err := ioutil . ReadFile ( filename )
p := NewPrefs ( )
if err != nil {
log . Printf ( "Read: %v: %v\n" , filename , err )
goto fail
return nil , fmt . Errorf ( "loading prefs from %q: %v" , filename , err )
}
p , err = PrefsFromBytes ( data , enforceDefaults )
p , err := PrefsFromBytes ( data , false )
if err != nil {
log . Printf ( "Parse: %v: %v\n" , filename , err )
goto fail
}
goto post
fail :
log . Printf ( "failed to load config. Generating a new one.\n" )
p = NewPrefs ( )
p . WantRunning = true
post :
// Update: we changed our minds :)
// Versabank would like to persist the setting across reboots, for now,
// because they don't fully trust the system and want to be able to
// leave it turned off when not in use. Eventually we need to make
// all motivation for this go away.
if false {
// Usability note: we always want WantRunning = true on startup.
// That way, if someone accidentally disables their VPN and doesn't
// know how, rebooting will fix it.
// We still persist WantRunning just in case we change our minds on
// this topic.
p . WantRunning = true
return nil , fmt . Errorf ( "decoding prefs in %q: %v" , filename , err )
}
log . Printf ( "Loaded prefs %v %v\n" , filename , p . Pretty ( ) )
return & p
return p , nil
}
func SavePrefs ( filename string , p * Prefs ) {
David Anderson
4 years ago
committed by