resolved: move DNS class utilities to dns-type.c and add more helpers

Let's make DNS class helpers more like DNS type helpers, let's move them
from resolved-dns-rr.[ch] into dns-type.[ch].

This also adds two new calls dns_class_is_pseudo() and
dns_class_is_valid_rr() which operate similar to dns_type_is_pseudo()
and dns_type_is_valid_rr() but for classes instead of types.

This should hopefully make handling of DNS classes and DNS types more
alike.

1 files changed, 0 insertions, 28 deletions

diff --git a/src/resolve/resolved-dns-rr.c b/src/resolve/resolved-dns-rr.c
index 60a614fb6d..98a3a3351d 100644
--- a/src/resolve/resolved-dns-rr.c
+++ b/src/resolve/resolved-dns-rr.c
@@ -1074,34 +1074,6 @@ int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) {
         return 0;
 }
 
-const char *dns_class_to_string(uint16_t class) {
-
-        switch (class) {
-
-        case DNS_CLASS_IN:
-                return "IN";
-
-        case DNS_CLASS_ANY:
-                return "ANY";
-        }
-
-        return NULL;
-}
-
-int dns_class_from_string(const char *s, uint16_t *class) {
-        assert(s);
-        assert(class);
-
-        if (strcaseeq(s, "IN"))
-                *class = DNS_CLASS_IN;
-        else if (strcaseeq(s, "ANY"))
-                *class = DNS_CLASS_ANY;
-        else
-                return -EINVAL;
-
-        return 0;
-}
-
 DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i) {
         DnsTxtItem *n;