DDNS/DNSSEC: Added function that checks whether RR type can be accepted by DDNS.

Refs #4

src/common/descriptor.c

@@ -317,3 +317,12 @@ int knot_rrtype_is_metatype(const uint16_t type)
 	       type == KNOT_RRTYPE_AXFR ||
 	       type == KNOT_RRTYPE_ANY;
 }
+
+int knot_rrtype_is_ddns_forbidenen(const uint16_t type)
+{
+	return type == KNOT_RRTYPE_RRSIG  ||
+	type == KNOT_RRTYPE_DNSKEY  ||
+	type == KNOT_RRTYPE_NSEC3PARAM ||
+	type == KNOT_RRTYPE_NSEC ||
+	type == KNOT_RRTYPE_NSEC3;
+}

src/common/descriptor.h

@@ -232,7 +232,7 @@ int knot_rrclass_from_string(const char *name, uint16_t *num);
  *
  * \param item Item value.
  *
- * \retval 1 if YES.
+ * \retval > 0 if YES.
  * \retval 0 if NO.
  */
 int descriptor_item_is_dname(const int item);
@@ -242,7 +242,7 @@ int descriptor_item_is_dname(const int item);
  *
  * \param item Item value.
  *
- * \retval 1 if YES.
+ * \retval > 0 if YES.
  * \retval 0 if NO.
  */
 int descriptor_item_is_compr_dname(const int item);
@@ -272,11 +272,21 @@ int descriptor_item_is_remainder(const int item);
  *
  * \param item Item value.
  *
- * \retval 1 if YES.
+ * \retval > 0 if YES.
  * \retval 0 if NO.
  */
 int knot_rrtype_is_metatype(const uint16_t type);
 
+/*!
+ * \brief Checks if given item is one of the types we do not accept via DDNS.
+ *
+ * \param item Item value.
+ *
+ * \retval > 0 if YES.
+ * \retval 0 if NO.
+ */
+int knot_rrtype_is_ddns_forbidenen(const uint16_t type);
+
 #endif // _KNOT_DESCRIPTOR_H_
 
 /*! @} */