Resolve "Improve security by enabling and enforcing more linting rules"

Description

See #242 (closed)

controller/config/config.go

@@ -118,7 +118,7 @@ func InitializeConfig() error {
 		FilesystemPathToStores = "stores"
 	}
 
-	JWTDuration, err = getDurationFromViper(jwtDurationKey, time.Hour)
+	JWTDuration, err = getDurationFromViper(jwtDurationKey, "h")
 	if err != nil {
 		JWTDuration = defaultJWTDuration
 	}
@@ -186,14 +186,15 @@ func setLogLevel() {
 	}
 }
 
-func getDurationFromViper(viperKey string, unit time.Duration) (time.Duration, error) {
-	duration := viper.GetDuration(viperKey)
+func getDurationFromViper(viperKey, unit string) (time.Duration, error) {
+	durationString := viper.GetString(viperKey)
 
-	if duration > 0 {
-		return duration * unit, nil
+	duration, err := time.ParseDuration(durationString + unit)
+	if err != nil {
+		return 0, err
 	}
 
-	return 0, viper.ConfigParseError{}
+	return duration, nil
 }
 
 func loadAMQPConfig() {