s4 dns: Only forward for zones we don't own

1 files changed, 28 insertions, 0 deletions

diff --git a/source4/dns_server/dns_utils.c b/source4/dns_server/dns_utils.c
index 1f7648cd5b4..b4f308c0279 100644
--- a/source4/dns_server/dns_utils.c
+++ b/source4/dns_server/dns_utils.c
@@ -294,6 +294,34 @@ WERROR dns_replace_records(struct dns_server *dns,
 	return WERR_OK;
 }
 
+bool dns_authorative_for_zone(struct dns_server *dns,
+			      const char *name)
+{
+	const struct dns_server_zone *z;
+	size_t host_part_len = 0;
+
+	if (name == NULL) {
+		return false;
+	}
+
+	if (strcmp(name, "") == 0) {
+		return true;
+	}
+	for (z = dns->zones; z != NULL; z = z->next) {
+		bool match;
+
+		match = dns_name_match(z->name, name, &host_part_len);
+		if (match) {
+			break;
+		}
+	}
+	if (z == NULL) {
+		return false;
+	}
+
+	return true;
+}
+
 WERROR dns_name2dn(struct dns_server *dns,
 		   TALLOC_CTX *mem_ctx,
 		   const char *name,