+#define fr_dlopenext lt_dlopenext
+lt_dlhandle lt_dlopenext(const char *name)
+{
+ int i;
+
+ for (i = 0; lt_dlmodules[i].name != NULL; i++) {
+ if (strcmp(name, lt_dlmodules[i].name) == 0) {
+ return lt_dlmodules[i].ref;
+ }
+ }
+
+ return NULL;
+}
+
+void *lt_dlsym(lt_dlhandle handle, UNUSED const char *symbol)
+{
+ return handle;
+}
+
+int lt_dlclose(lt_dlhandle handle)
+{
+ return 0;
+}
+
+const char *lt_dlerror(void)
+{
+ return "Unspecified error";
+}
+
+#endif /* WITH_DLOPEN */
+#else /* WITHOUT_LIBLTDL */
+
+/*
+ * Solve the issues of libraries linking to other libraries
+ * by using a newer libltdl API.
+ */
+#ifndef HAVE_LT_DLADVISE_INIT
+#define fr_dlopenext lt_dlopenext
+#else
+static lt_dlhandle fr_dlopenext(const char *filename)
+{
+ lt_dlhandle handle = 0;
+ lt_dladvise advise;
+
+ if (!lt_dladvise_init (&advise) &&
+ !lt_dladvise_ext (&advise) &&
+ !lt_dladvise_global (&advise)) {
+ handle = lt_dlopenadvise (filename, advise);
+ }
+
+ lt_dladvise_destroy (&advise);
+
+ return handle;
+}
+#endif /* HAVE_LT_DLADVISE_INIT */
+#endif /* WITHOUT_LIBLTDL */
+
+static int virtual_server_idx(const char *name)
+{
+ uint32_t hash;
+
+ if (!name) return 0;
+
+ hash = fr_hash_string(name);
+
+ return hash & (VIRTUAL_SERVER_HASH_SIZE - 1);
+}
+
+static void virtual_server_free(virtual_server_t *server)
+{
+ if (!server) return;
+
+ if (server->components) rbtree_free(server->components);
+ server->components = NULL;
+
+ free(server);
+}
+
+void virtual_servers_free(time_t when)
+{
+ int i;
+ virtual_server_t **last;
+
+ for (i = 0; i < VIRTUAL_SERVER_HASH_SIZE; i++) {
+ virtual_server_t *server, *next;
+
+ last = &virtual_servers[i];
+ for (server = virtual_servers[i];
+ server != NULL;
+ server = next) {
+ next = server->next;
+
+ /*
+ * If we delete it, fix the links so that
+ * we don't orphan anything. Also,
+ * delete it if it's old, AND a newer one
+ * was defined.
+ *
+ * Otherwise, the last pointer gets set to
+ * the one we didn't delete.
+ */
+ if ((when == 0) ||
+ ((server->created < when) && server->can_free)) {
+ *last = server->next;
+ virtual_server_free(server);
+ } else {
+ last = &(server->next);
+ }
+ }
+ }
+}
+