appending custom rules to all rules array

secrets/secrets.go

@@ -128,6 +128,30 @@ func (s *Secrets) AddRegexRules(patterns []string) error {
 	return nil
 }
 
+func addCustomRules(rules []CustomRuleConfiguration) ([]Rule, error) {
+	var customRules []Rule
+	customRules = make([]Rule, len(rules))
+	for idx, rule := range rules {
+		regex, err := regexp.Compile(rule.RegexPattern)
+		if err != nil {
+			return nil, fmt.Errorf("failed to compile custom regex rule %s: %w", rule.RuleID, err)
+		}
+		customRules[idx] = Rule{
+			Rule: config.Rule{
+				Description: rule.Description,
+				RuleID:      rule.RuleID,
+				Regex:       regex,
+				Keywords:    []string{},
+			},
+			Tags: rule.Tags,
+		}
+		if rule.SecretGroup != 0 {
+			customRules[idx].Rule.SecretGroup = rule.SecretGroup
+		}
+	}
+	return customRules, nil
+}
+
 func getFindingId(item plugins.Item, finding report.Finding) string {
 	idParts := []string{item.ID, finding.RuleID, finding.Secret}
 	sha := sha1.Sum([]byte(strings.Join(idParts, "-")))
@@ -369,6 +393,12 @@ func loadAllRules() ([]Rule, error) {
 	allRules = append(allRules, Rule{Rule: *rules.YandexAccessToken(), Tags: []string{TagAccessToken}})
 	allRules = append(allRules, Rule{Rule: *rules.ZendeskSecretKey(), Tags: []string{TagSecretKey}})
 
+	builtCustomRules, err := addCustomRules(customRules)
+	if err != nil {
+		return nil, err
+	}
+	allRules = append(allRules, builtCustomRules...)
+
 	return allRules, nil
 }