1 files changed, 15 insertions, 1 deletions
diff --git a/src/shared/dns-domain.h b/src/shared/dns-domain.h
index 99c72574db..3f8f621802 100644
--- a/src/shared/dns-domain.h
+++ b/src/shared/dns-domain.h
@@ -22,12 +22,26 @@
 #pragma once
 
 
+#include <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
 #include "hashmap.h"
 #include "in-addr-util.h"
 
+/* Length of a single label, with all escaping removed, excluding any trailing dot or NUL byte */
 #define DNS_LABEL_MAX 63
+
+/* Worst case length of a single label, with all escaping applied and room for a trailing NUL byte. */
 #define DNS_LABEL_ESCAPED_MAX (DNS_LABEL_MAX*4+1)
 
+/* Maximum length of a full hostname, consisting of a series of unescaped labels, and no trailing dot or NUL byte */
+#define DNS_HOSTNAME_MAX 253
+
+/* Maximum length of a full hostname, on the wire, including the final NUL byte */
+#define DNS_WIRE_FOMAT_HOSTNAME_MAX 255
+
 int dns_label_unescape(const char **name, char *dest, size_t sz);
 int dns_label_unescape_suffix(const char *name, const char **label_end, char *dest, size_t sz);
 int dns_label_escape(const char *p, size_t l, char *dest, size_t sz);
@@ -71,7 +85,7 @@ int dns_name_address(const char *p, int *family, union in_addr_union *a);
 bool dns_name_is_root(const char *name);
 bool dns_name_is_single_label(const char *name);
 
-int dns_name_to_wire_format(const char *domain, uint8_t *buffer, size_t len);
+int dns_name_to_wire_format(const char *domain, uint8_t *buffer, size_t len, bool canonical);
 
 bool dns_srv_type_is_valid(const char *name);
 bool dns_service_name_is_valid(const char *name);