func ValidateRequireWhiskAuthAnnotationValue()

in webaction/webaction.go [196:248]
38 lines of code
9 McCabe index (conditional complexity)

func ValidateRequireWhiskAuthAnnotationValue(actionName string, value interface{}) (string, error) {
	var isValid = false
	var enabled = wski18n.FEATURE_DISABLED

	switch value.(type) {
	case string:
		secureValue := value.(string)
		// assure the user-supplied token is valid (i.e., for now a non-empty string)
		if len(secureValue) != 0 && secureValue != "<nil>" {
			isValid = true
			enabled = wski18n.FEATURE_ENABLED
		}
	case int:
		secureValue := value.(int)
		// FYI, the CLI defines MAX_JS_INT = 1<<53 - 1 (i.e.,  9007199254740991)
		// NOTE: For JS, the largest exact integral value is 253-1, or 9007199254740991.
		// In ES6, this is defined as Number MAX_SAFE_INTEGER.
		// However, in JS, the bitwise operators and shift operators operate on 32-bit ints,
		// so in that case, the max safe integer is 231-1, or 2147483647
		// We also disallow negative integers
		// NOTE: when building for 386 archs. we need to assure comparison with MAX_JS_INT does not
		// "blow up" and must allow the compiler to compare an untyped int (secureValue) to effectively
		// an int64... so for the comparison we MUST force a type conversion to avoid "int" size mismatch
		if int64(secureValue) < MAX_JS_INT && secureValue > 0 {
			isValid = true
			enabled = wski18n.FEATURE_ENABLED
		}
	case bool:
		secureValue := value.(bool)
		isValid = true
		if secureValue {
			enabled = wski18n.FEATURE_ENABLED
		}
	}

	if !isValid {
		errMsg := wski18n.T(wski18n.ID_ERR_WEB_ACTION_REQUIRE_AUTH_TOKEN_INVALID_X_action_X_key_X_value,
			map[string]interface{}{
				wski18n.KEY_ACTION: actionName,
				wski18n.KEY_KEY:    REQUIRE_WHISK_AUTH,
				wski18n.KEY_VALUE:  fmt.Sprintf("%v", value)})
		return errMsg, wskderrors.NewActionSecureKeyError(errMsg)
	}

	// Emit an affirmation that security token will be applied to the action
	msg := wski18n.T(wski18n.ID_VERBOSE_ACTION_AUTH_X_action_X_value_X,
		map[string]interface{}{
			wski18n.KEY_ACTION: actionName,
			wski18n.KEY_VALUE:  enabled})
	wskprint.PrintlnOpenWhiskVerbose(utils.Flags.Verbose, msg)

	return msg, nil
}