smtp and ui

config/env.go

@@ -63,6 +63,21 @@ func EnvFloat32(key string, def float32, valid func(float32) bool) float32 {
 	return float32(f)
 }
 
+// EnvBool parses key as a boolean ("1", "true", "yes", "on" / "0", "false",
+// ...), accepting the same literals strconv.ParseBool accepts.
+func EnvBool(key string, def bool) bool {
+	v, ok := os.LookupEnv(key)
+	if !ok || v == "" {
+		return def
+	}
+	b, err := strconv.ParseBool(v)
+	if err != nil {
+		log.Printf("invalid %s %q, using %t", key, v, def)
+		return def
+	}
+	return b
+}
+
 // EnvDuration parses key as a time.Duration (e.g. "2m", "30s").
 func EnvDuration(key string, def time.Duration) time.Duration {
 	v, ok := os.LookupEnv(key)