Allow loopd autogenerated TLS cert validity override with a new loopd…

… flag

Co-authored-by: George Tsagkarelis <34623190+GeorgeTsagk@users.noreply.github.com>

loopd/config.go

@@ -151,7 +151,7 @@ type Config struct {
 	TLSExtraDomains    []string `long:"tlsextradomain" description:"Adds an extra domain to the generated certificate."`
 	TLSAutoRefresh     bool     `long:"tlsautorefresh" description:"Re-generate TLS certificate and key if the IPs or domains are changed."`
 	TLSDisableAutofill bool     `long:"tlsdisableautofill" description:"Do not include the interface IPs or the system hostname in TLS certificate, use first --tlsextradomain as Common Name instead, if set."`
-	TLSValidity        int      `long:"tlsvalidity" description:"Loop's TLS certificate validity period in days. Defaults to 430 (roughly 14 months)"`
+	TLSValidity        int      `long:"tlsvalidity" description:"Loop's TLS certificate validity period in days. Defaults to 420 (roughly 14 months)"`
 
 	MacaroonPath string `long:"macaroonpath" description:"Path to write the macaroon for loop's RPC and REST services if it doesn't exist."`
 
@@ -417,13 +417,13 @@ func loadCertWithCreate(cfg *Config) (tls.Certificate, *x509.Certificate,
 	if !lnrpc.FileExists(cfg.TLSCertPath) &&
 		!lnrpc.FileExists(cfg.TLSKeyPath) {
 
-		validityPeriod := time.Duration(cfg.TLSValidity) * 24 * time.Hour
+		validity := time.Duration(cfg.TLSValidity) * 24 * time.Hour
 
 		log.Infof("Generating TLS certificates...")
 		certBytes, keyBytes, err := cert.GenCertPair(
 			defaultSelfSignedOrganization, cfg.TLSExtraIPs,
 			cfg.TLSExtraDomains, cfg.TLSDisableAutofill,
-			validityPeriod,
+			validity,
 		)
 		if err != nil {
 			return tls.Certificate{}, nil, err