updown: Use plugin features to register listener and attribute handler
[strongswan.git] / src / libcharon / plugins / updown / updown_plugin.c
index 9d0591e..3c1aba5 100644 (file)
 
 #include "updown_plugin.h"
 #include "updown_listener.h"
+#include "updown_handler.h"
 
 #include <daemon.h>
+#include <hydra.h>
 
 typedef struct private_updown_plugin_t private_updown_plugin_t;
 
@@ -34,15 +36,65 @@ struct private_updown_plugin_t {
         * Listener interface, listens to CHILD_SA state changes
         */
        updown_listener_t *listener;
+
+       /**
+        * Attribute handler, to pass DNS servers to updown
+        */
+       updown_handler_t *handler;
 };
 
+METHOD(plugin_t, get_name, char*,
+       private_updown_plugin_t *this)
+{
+       return "updown";
+}
+
 /**
- * Implementation of plugin_t.destroy
+ * Register listener
  */
-static void destroy(private_updown_plugin_t *this)
+static bool plugin_cb(private_updown_plugin_t *this,
+                                         plugin_feature_t *feature, bool reg, void *cb_data)
+{
+       if (reg)
+       {
+               if (lib->settings->get_bool(lib->settings,
+                                                                       "charon.plugins.updown.dns_handler", FALSE))
+               {
+                       this->handler = updown_handler_create();
+                       hydra->attributes->add_handler(hydra->attributes,
+                                                                                  &this->handler->handler);
+               }
+               this->listener = updown_listener_create(this->handler);
+               charon->bus->add_listener(charon->bus, &this->listener->listener);
+       }
+       else
+       {
+               charon->bus->remove_listener(charon->bus, &this->listener->listener);
+               this->listener->destroy(this->listener);
+               if (this->handler)
+               {
+                       this->handler->destroy(this->handler);
+                       hydra->attributes->remove_handler(hydra->attributes,
+                                                                                         &this->handler->handler);
+               }
+       }
+       return TRUE;
+}
+
+METHOD(plugin_t, get_features, int,
+       private_updown_plugin_t *this, plugin_feature_t *features[])
+{
+       static plugin_feature_t f[] = {
+               PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
+                       PLUGIN_PROVIDE(CUSTOM, "updown"),
+       };
+       *features = f;
+       return countof(f);
+}
+
+METHOD(plugin_t, destroy, void,
+       private_updown_plugin_t *this)
 {
-       charon->bus->remove_listener(charon->bus, &this->listener->listener);
-       this->listener->destroy(this->listener);
        free(this);
 }
 
@@ -51,13 +103,17 @@ static void destroy(private_updown_plugin_t *this)
  */
 plugin_t *updown_plugin_create()
 {
-       private_updown_plugin_t *this = malloc_thing(private_updown_plugin_t);
-
-       this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+       private_updown_plugin_t *this;
 
-       this->listener = updown_listener_create();
-       charon->bus->add_listener(charon->bus, &this->listener->listener);
+       INIT(this,
+               .public = {
+                       .plugin = {
+                               .get_name = _get_name,
+                               .get_features = _get_features,
+                               .destroy = _destroy,
+                       },
+               },
+       );
 
        return &this->public.plugin;
 }
-