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-rw-r--r--src/resolve/resolved-dns-rr.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-rr.c b/src/resolve/resolved-dns-rr.c
index a4379c1..c449efa 100644
--- a/src/resolve/resolved-dns-rr.c
+++ b/src/resolve/resolved-dns-rr.c
@@ -181,6 +181,23 @@ bool dns_resource_key_is_dnssd_ptr(const DnsResourceKey *key) {
dns_name_endswith(dns_resource_key_name(key), "_udp.local");
}
+bool dns_resource_key_is_dnssd_two_label_ptr(const DnsResourceKey *key) {
+ assert(key);
+
+ /* Check if this is a PTR resource key used in Service Instance
+ * Enumeration as described in RFC6763 § 4.1, excluding selective
+ * service names described in RFC6763 § 7.1. */
+
+ if (key->type != DNS_TYPE_PTR)
+ return false;
+
+ const char *name = dns_resource_key_name(key);
+ if (dns_name_parent(&name) <= 0)
+ return false;
+
+ return dns_name_equal(name, "_tcp.local") || dns_name_equal(name, "_udp.local");
+}
+
int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) {
int r;