/**
* Message handlers to use for all clients.
*/
- const struct GNUNET_MQ_MessageHandler *handlers;
+ struct GNUNET_MQ_MessageHandler *handlers;
/**
* Closure for @e task.
}
+/**
+ * Tear down the service, closing the listen sockets and
+ * freeing the ACLs.
+ *
+ * @param sh handle to the service to tear down.
+ */
+static void
+teardown_service (struct GNUNET_SERVICE_Handle *sh)
+{
+ struct ServiceListenContext *slc;
+
+ GNUNET_free_non_null (sh->v4_denied);
+ GNUNET_free_non_null (sh->v6_denied);
+ GNUNET_free_non_null (sh->v4_allowed);
+ GNUNET_free_non_null (sh->v6_allowed);
+ while (NULL != (slc = sh->slc_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (sh->slc_head,
+ sh->slc_tail,
+ slc);
+ if (NULL != slc->listen_task)
+ GNUNET_SCHEDULER_cancel (slc->listen_task);
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_NETWORK_socket_close (slc->listen_socket));
+ GNUNET_free (slc);
+ }
+}
+
+
+/**
+ * Low-level function to start a service if the scheduler
+ * is already running. Should only be used directly in
+ * special cases.
+ *
+ * The function will launch the service with the name @a service_name
+ * using the @a service_options to configure its shutdown
+ * behavior. When clients connect or disconnect, the respective
+ * @a connect_cb or @a disconnect_cb functions will be called. For
+ * messages received from the clients, the respective @a handlers will
+ * be invoked; for the closure of the handlers we use the return value
+ * from the @a connect_cb invocation of the respective client.
+ *
+ * Each handler MUST call #GNUNET_SERVICE_client_continue() after each
+ * message to receive further messages from this client. If
+ * #GNUNET_SERVICE_client_continue() is not called within a short
+ * time, a warning will be logged. If delays are expected, services
+ * should call #GNUNET_SERVICE_client_disable_continue_warning() to
+ * disable the warning.
+ *
+ * Clients sending invalid messages (based on @a handlers) will be
+ * dropped. Additionally, clients can be dropped at any time using
+ * #GNUNET_SERVICE_client_drop().
+ *
+ * The service must be stopped using #GNUNET_SERVICE_stoP().
+ *
+ * @param service_name name of the service to run
+ * @param cfg configuration to use
+ * @param connect_cb function to call whenever a client connects
+ * @param disconnect_cb function to call whenever a client disconnects
+ * @param cls closure argument for @a connect_cb and @a disconnect_cb
+ * @param handlers NULL-terminated array of message handlers for the service,
+ * the closure will be set to the value returned by
+ * the @a connect_cb for the respective connection
+ * @return NULL on error
+ */
+struct GNUNET_SERVICE_Handle *
+GNUNET_SERVICE_starT (const char *service_name,
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ GNUNET_SERVICE_ConnectHandler connect_cb,
+ GNUNET_SERVICE_DisconnectHandler disconnect_cb,
+ void *cls,
+ const struct GNUNET_MQ_MessageHandler *handlers)
+{
+ struct GNUNET_SERVICE_Handle *sh;
+
+ sh = GNUNET_new (struct GNUNET_SERVICE_Handle);
+ sh->service_name = service_name;
+ sh->cfg = cfg;
+ sh->connect_cb = connect_cb;
+ sh->disconnect_cb = disconnect_cb;
+ sh->cb_cls = cls;
+ if (NULL != handlers)
+ {
+ unsigned int i;
+
+ for (i=0;NULL != handlers[i].cb; i++) ;
+ sh->handlers = GNUNET_new_array (i + 1,
+ struct GNUNET_MQ_MessageHandler);
+ GNUNET_memcpy (sh->handlers,
+ handlers,
+ i * sizeof (struct GNUNET_MQ_MessageHandler));
+ }
+ if (GNUNET_OK != setup_service (sh))
+ {
+ GNUNET_free (sh->handlers);
+ GNUNET_free (sh);
+ return NULL;
+ }
+ GNUNET_SERVICE_resume (sh);
+ return sh;
+}
+
+
+/**
+ * Stops a service that was started with #GNUNET_SERVICE_starT().
+ *
+ * @param srv service to stop
+ */
+void
+GNUNET_SERVICE_stoP (struct GNUNET_SERVICE_Handle *srv)
+{
+ struct GNUNET_SERVICE_Client *client;
+
+ GNUNET_SERVICE_suspend (srv);
+ while (NULL != (client = srv->clients_head))
+ GNUNET_SERVICE_client_drop (client);
+ teardown_service (srv);
+ GNUNET_free (srv->handlers);
+ GNUNET_free (srv);
+}
+
+
/**
* Creates the "main" function for a GNUnet service. You
* should almost always use the #GNUNET_SERVICE_MAIN macro
sh.connect_cb = connect_cb;
sh.disconnect_cb = disconnect_cb;
sh.cb_cls = cls;
- sh.handlers = handlers;
+ if (NULL != handlers)
+ {
+ unsigned int i;
+
+ for (i=0;NULL != handlers[i].cb; i++) ;
+ sh.handlers = GNUNET_new_array (i + 1,
+ struct GNUNET_MQ_MessageHandler);
+ GNUNET_memcpy (sh.handlers,
+ handlers,
+ i * sizeof (struct GNUNET_MQ_MessageHandler));
+ }
sh.service_name = service_name;
/* setup subsystems */
}
}
#endif
+ teardown_service (&sh);
+ GNUNET_free (sh.handlers);
GNUNET_SPEEDUP_stop_ ();
GNUNET_CONFIGURATION_destroy (cfg);
-
- while (NULL != sh.slc_head)
- {
- struct ServiceListenContext *slc = sh.slc_head;
-
- sh.slc_head = slc->next;
- if (NULL != slc->listen_task)
- GNUNET_SCHEDULER_cancel (slc->listen_task);
- GNUNET_break (GNUNET_OK ==
- GNUNET_NETWORK_socket_close (slc->listen_socket));
- GNUNET_free (slc);
- }
-
GNUNET_free_non_null (logfile);
GNUNET_free_non_null (loglev);
GNUNET_free (cfg_filename);
GNUNET_free_non_null (opt_cfg_filename);
- GNUNET_free_non_null (sh.v4_denied);
- GNUNET_free_non_null (sh.v6_denied);
- GNUNET_free_non_null (sh.v4_allowed);
- GNUNET_free_non_null (sh.v6_allowed);
return err ? GNUNET_SYSERR : sh.ret;
}