+
+static void escape_service_name(char *d, size_t size, const char *s) {
+ assert(d);
+ assert(size);
+ assert(s);
+
+ while (*s && size >= 2) {
+ if (*s == '.' || *s == '\\') {
+ if (size < 3)
+ break;
+
+ *(d++) = '\\';
+ size--;
+ }
+
+ *(d++) = *(s++);
+ size--;
+ }
+
+ assert(size > 0);
+ *(d++) = 0;
+}
+
+
+int avahi_service_name_snprint(char *p, size_t size, const char *name, const char *type, const char *domain) {
+ char *t = NULL, *d = NULL;
+ char ename[64];
+ int ret;
+
+ assert(p);
+
+ if ((name && !avahi_is_valid_service_name(name))) {
+ ret = AVAHI_ERR_INVALID_SERVICE_NAME;
+ goto fail;
+ }
+
+ if (!avahi_is_valid_service_type(type)) {
+ ret = AVAHI_ERR_INVALID_SERVICE_TYPE;
+ goto fail;
+ }
+
+ if (!avahi_is_valid_domain_name(domain)) {
+ ret = AVAHI_ERR_INVALID_DOMAIN_NAME;
+ goto fail;
+ }
+
+ if (name)
+ escape_service_name(ename, sizeof(ename), name);
+
+ if (!(d = avahi_normalize_name(domain)) ||
+ !(t = avahi_normalize_name(type))) {
+ ret = AVAHI_ERR_NO_MEMORY;
+ goto fail;
+ }
+
+ snprintf(p, size, "%s%s%s.%s", name ? ename : "", name ? "." : "", t, d);
+
+ ret = AVAHI_OK;
+
+fail:
+
+ avahi_free(t);
+ avahi_free(d);
+
+ return ret;
+}