+/** Escape the domain name in *src and write it to *ret_name */
+char *avahi_escape_label(const char* src, size_t src_length, char **ret_name, size_t *ret_size);
+
+/** @} */
+
+/** @{ \name Validity Checks */
+
+/** Return 1 when the specified string contains a valid generic DNS-SD
+ * service type (i.e. a series of words starting with "_"), 0
+ * otherwise */
+int avahi_is_valid_service_type_generic(const char *t);
+
+/** Return 1 when the specified string contains a valid strict DNS-SD
+ * service type (i.e. consisting of only two words, the latter being
+ * either _udp or _tcp), 0 otherwise */
+int avahi_is_valid_service_type_strict(const char *t);
+
+/** Return 1 when the specified string contains a valid DNS-SD service
+ * subtype, 0 otherwise */
+int avahi_is_valid_service_subtype(const char *t);
+
+/** Return 1 when the specified string contains a valid domain name, 0 otherwise */
+int avahi_is_valid_domain_name(const char *t);
+
+/** Return 1 when the specified string contains a valid DNS-SD service name, 0 otherwise */
+int avahi_is_valid_service_name(const char *t);
+
+/** Return 1 when the specified string contains a valid non-FQDN host name (i.e. without dots), 0 otherwise */
+int avahi_is_valid_host_name(const char *t);
+
+/** Return 1 when the specified string contains a valid FQDN host name (i.e. with more than one label and non-numerical), 0 otherwise. \since 0.6.9 */
+int avahi_is_valid_fqdn(const char *t);
+
+/** @} */
+
+/** @{ \name DNS-SD service name handling */
+
+/** Construct a valid complete DNS-SD service name from a name, a type and a domain */
+int avahi_service_name_join(char *p, size_t size, const char *name, const char *type, const char *domain);
+
+/** Split a full service name into name, type and domain */
+int avahi_service_name_split(const char *p, char *name, size_t name_size, char *type, size_t type_size, char *domain, size_t domain_size);
+
+/** @} */