void avahi_hexdump(const void *p, size_t size);
-char *avahi_format_mac_address(const uint8_t* mac, size_t size);
+char *avahi_format_mac_address(char *t, size_t l, const uint8_t* mac, size_t size);
+
+/** Change every character in the string to upper case (ASCII), return a pointer to the string */
+char *avahi_strup(char *s);
+
+/** Change every character in the string to lower case (ASCII), return a pointer to the string */
+char *avahi_strdown(char *s);
AVAHI_C_DECL_END