nsupdate

internal/config/envconfig.go

@@ -18,7 +18,7 @@ type structInfo struct {
 	Tags         reflect.StructTag
 	Type         reflect.Type
 	DefaultValue interface{}
-	Secret       interface{}
+	Secret       bool
 }
 
 func getEnv[t string | bool | int | int64 | float64](env string, def t) (t, error) {
@@ -97,7 +97,7 @@ func getStructInfo(spec interface{}) ([]structInfo, error) {
 			f = f.Elem()
 		}
 
-		secret, err := typeConversion(ftype.Type.String(), ftype.Tag.Get("secret"))
+		secret, err := strconv.ParseBool((ftype.Tag.Get("secret")))
 		if err != nil {
 			secret = false
 		}

internal/config/initialize.go

@@ -3,6 +3,7 @@ package config
 import (
 	"log"
 	"os"
+	"os/exec"
 	"time"
 )
 
@@ -32,6 +33,12 @@ func Init() {
 		os.Exit(1)
 	}
 
+	// check to see if nsupdate is installed
+	cmd := "command -v nsupdate"
+	if err := exec.Command("/usr/bin/sh", "-c", cmd).Run(); err != nil {
+		panic("nsupdate is not installed")
+	}
+
 	// print running config
 	printRunningConfig(&Cfg, cfgInfo)
 }

internal/config/struct-config.go

@@ -30,6 +30,12 @@ type Config struct {
 	// cisa
 	RemoteURL      string `default:"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json?sort_by=field_date_added" env:"remote_url"`
 	RefreshSeconds int    `default:"14400"                                                                                                        env:"refresh_seconds"`
+
+	// nsupdate
+	NSUKey    string `env:"nsupdate-key"        secret:"true"`
+	NSUPort   int    `default:"53"              env:"nsupdate-port"`
+	NSUServer string `default:"ns1.example.com" env:"nsupdate-server"`
+	NSUZone   string `default:"example.com"     env:"nsupdate-zone"`
 }
 
 // New initializes the config variable for use with a prepared set of defaults.
@@ -70,16 +76,20 @@ func setLogLevel(cfg *Config) {
 
 func printRunningConfig(cfg *Config, cfgInfo []structInfo) {
 	for _, info := range cfgInfo {
-		switch info.Type.String() {
-		case "string":
-			p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*string)
-			cfg.Log.Debug("Running Configuration", info.Alt, *p)
-		case "bool":
-			p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*bool)
-			cfg.Log.Debug("Running Configuration", info.Alt, strconv.FormatBool(*p))
-		case "int":
-			p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*int)
-			cfg.Log.Debug("Running Configuration", info.Alt, strconv.FormatInt(int64(*p), 10))
+		if info.Secret {
+			cfg.Log.Debug("Running Configuration", info.Alt, "REDACTED")
+		} else {
+			switch info.Type.String() {
+			case "string":
+				p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*string)
+				cfg.Log.Debug("Running Configuration", info.Alt, *p)
+			case "bool":
+				p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*bool)
+				cfg.Log.Debug("Running Configuration", info.Alt, strconv.FormatBool(*p))
+			case "int":
+				p := reflect.ValueOf(cfg).Elem().FieldByName(info.Name).Addr().Interface().(*int)
+				cfg.Log.Debug("Running Configuration", info.Alt, strconv.FormatInt(int64(*p), 10))
+			}
 		}
 	}
 }