Initial Commit

pkg/types/config.go

@@ -0,0 +1,42 @@
+package types
+
+import (
+	"fmt"
+
+	"github.com/asaskevich/govalidator"
+)
+
+type Config struct {
+	Ifaces   []string            `json:"interfaces"`
+	Zones    map[string]*Zone    `json:"zones"`
+	TSIGKeys map[string]*TSIGKey `json:"tsig-keys"`
+}
+
+func (c *Config) Validate() error {
+	if len(c.Zones) <= 0 {
+		return fmt.Errorf("no dns zones configured")
+	}
+
+	if len(c.Ifaces) <= 0 {
+		return fmt.Errorf("no interfaces configured")
+	}
+
+ZONE_LOOP:
+	for _, zone := range c.Zones {
+		if !govalidator.IsIP(zone.DNSServer) && !govalidator.IsDNSName(zone.DNSServer) {
+			return fmt.Errorf("invalid dns server %v", zone.DNSServer)
+		}
+
+		if !govalidator.IsDNSName(zone.Name) {
+			return fmt.Errorf("invalid dns zone name %v", zone.Name)
+		}
+
+		for _, tsigkey := range c.TSIGKeys {
+			if tsigkey.Name == zone.TSIGKeyName {
+				continue ZONE_LOOP
+			}
+		}
+		return fmt.Errorf("no matching tsigkey found for zone %v", zone.Name)
+	}
+	return nil
+}

pkg/types/tsigkey.go

@@ -0,0 +1,7 @@
+package types
+
+type TSIGKey struct {
+	Algorithm string `json:"algorithm"`
+	Name      string `json:"name"`
+	Secret    string `json:"secret"`
+}

pkg/types/zone.go

@@ -0,0 +1,7 @@
+package types
+
+type Zone struct {
+	DNSServer   string `json:"dns-server"`
+	Name        string `json:"name"`
+	TSIGKeyName string `json:"tsig-key"`
+}