implemented provide_recommendation callback function

src/libcharon/tnc/tnccs/tnccs.h

@@ -22,6 +22,7 @@
 #define TNCCS_H_
 
 #include <tnc/tncif.h>
+#include <tnc/tncifimv.h>
 #include <library.h>
 
 typedef enum tnccs_type_t tnccs_type_t;
@@ -53,13 +54,27 @@ typedef tnccs_t* (*tnccs_constructor_t)(bool is_server);
 /**
  * Callback function adding a message to a TNCCS batch
  *
- * @param message		message to be added
- * @param message_len	message length
- * @param message_type	message type
+ * @param message			message to be added
+ * @param message_len		message length
+ * @param message_type		message type
  */
 typedef void (*tnccs_send_message_t)(tnccs_t* tncss,
 									 TNC_BufferReference message,
 									 TNC_UInt32 message_len,
 									 TNC_MessageType message_type);
 
+
+/**
+ * Callback function delivering an IMV Action Recommendation and
+ * IMV Evaluation Result to the TNCS
+ *
+ * @param imv_id			ID of the IMV providing the recommendation
+ * @param recommendation	action recommendation
+ * @param evaluation		evaluation result
+ */
+typedef void (*tnccs_provide_recommendation_t)(tnccs_t* tncss,
+								TNC_IMVID imv_id,
+								TNC_IMV_Action_Recommendation recommendation,
+								TNC_IMV_Evaluation_Result evaluation);
+
 #endif /** TNCCS_H_ @}*/

src/libcharon/tnc/tnccs/tnccs_manager.c

@@ -58,6 +58,11 @@ struct tnccs_connection_entry_t {
 	 *
 	 */
 	tnccs_send_message_t send_message;
+
+	/** TNCS provide recommendation function
+	 *
+	 */
+	tnccs_provide_recommendation_t provide_recommendation;
 };
 
 /**
@@ -198,7 +203,7 @@ METHOD(tnccs_manager_t, send_message, TNC_Result,
 {
 	enumerator_t *enumerator;
 	tnccs_connection_entry_t *entry;
-	tnccs_send_message_t send_message;
+	tnccs_send_message_t send_message = NULL;
 	tnccs_t *tnccs = NULL;
 
 	this->lock->write_lock(this->lock);
@@ -215,7 +220,7 @@ METHOD(tnccs_manager_t, send_message, TNC_Result,
 	enumerator->destroy(enumerator);
 	this->lock->unlock(this->lock);
 
-	if (tnccs)
+	if (tnccs && send_message)
 	{
 		send_message(tnccs, message, message_len, message_type);
 		return TNC_RESULT_SUCCESS;
@@ -223,6 +228,39 @@ METHOD(tnccs_manager_t, send_message, TNC_Result,
 	return TNC_RESULT_FATAL;
 }
 
+METHOD(tnccs_manager_t, provide_recommendation, TNC_Result,
+	private_tnccs_manager_t *this, TNC_IMVID imv_id,
+								   TNC_ConnectionID id,
+								   TNC_IMV_Action_Recommendation recommendation,
+								   TNC_IMV_Evaluation_Result evaluation)
+{
+	enumerator_t *enumerator;
+	tnccs_connection_entry_t *entry;
+	tnccs_provide_recommendation_t provide_recommendation = NULL;
+	tnccs_t *tnccs = NULL;
+
+	this->lock->write_lock(this->lock);
+	enumerator = this->connections->create_enumerator(this->connections);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (id == entry->id)
+		{
+			tnccs = entry->tnccs;
+			provide_recommendation = entry->provide_recommendation;
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+
+	if (tnccs && provide_recommendation)
+	{
+		provide_recommendation(tnccs, imv_id, recommendation, evaluation);
+		return TNC_RESULT_SUCCESS;
+	 }
+	return TNC_RESULT_FATAL;
+}
+
 METHOD(tnccs_manager_t, destroy, void,
 	private_tnccs_manager_t *this)
 {
@@ -247,6 +285,7 @@ tnccs_manager_t *tnccs_manager_create()
 				.create_connection = _create_connection,
 				.remove_connection = _remove_connection,
 				.send_message = _send_message,
+				.provide_recommendation = _provide_recommendation,
 				.destroy = _destroy,
 			},
 			.protocols = linked_list_create(),

src/libcharon/tnc/tnccs/tnccs_manager.h

@@ -61,14 +61,18 @@ struct tnccs_manager_t {
 								bool is_server);
 
 	/**
-	 * Create a TNCCS connection and assign a unique connection ID
+	 * Create a TNCCS connection and assign a unique connection ID as well as
+	 * callback functions for adding a message to a TNCCS batch and delivering
+	 * an IMV recommendation, respectively
 	 *
-	 * @param tnccs			TNCCS connection instance
-	 * @param send_message	callback function adding a message to a TNCCS batch
-	 * @return				assigned connection ID
+	 * @param tnccs						TNCCS connection instance
+	 * @param send_message				TNCCS callback function 
+	 * @param provide_recommendation	TNCS callback function 
+	 * @return							assigned connection ID
 	 */
 	TNC_ConnectionID (*create_connection)(tnccs_manager_t *this, tnccs_t *tnccs,
-										  tnccs_send_message_t send_message);
+						 tnccs_send_message_t send_message,
+						 tnccs_provide_recommendation_t provide_recommendation);
 
 	/**
 	 * Remove a TNCCS connection using its connection ID.
@@ -92,6 +96,20 @@ struct tnccs_manager_t {
 							   TNC_UInt32 message_len,
 							   TNC_MessageType message_type);
 
+	/**
+	 * Deliver an IMV Action Recommendation and IMV Evaluation Result to the TNCS
+	 *
+	 * @param imv_id			ID of the IMV providing the recommendation
+	 * @param connection_id		target connection ID
+	 * @param recommendation	action recommendation
+	 * @param evaluation		evaluation result
+	 */
+	TNC_Result (*provide_recommendation)(tnccs_manager_t *this,
+								TNC_IMVID imv_id,
+								TNC_ConnectionID connection_id,
+								TNC_IMV_Action_Recommendation recommendation,
+								TNC_IMV_Evaluation_Result evaluation);
+
 	/**
 	 * Destroy a tnccs_manager instance.
 	 */