clear reason strings after delivering them

src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.c

@@ -360,6 +360,21 @@ METHOD(recommendations_t, create_reason_enumerator, enumerator_t*,
 					(void*)reason_filter, NULL, NULL);
 }
 
+METHOD(recommendations_t, clear_reasons, void,
+	private_tnc_imv_recommendations_t *this)
+{
+	enumerator_t *enumerator;
+	recommendation_entry_t *entry;
+
+	enumerator = this->recs->create_enumerator(this->recs);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		chunk_clear(&entry->reason);
+		chunk_clear(&entry->reason_language);
+	}
+	enumerator->destroy(enumerator);
+}
+
 METHOD(recommendations_t, destroy, void,
 	private_tnc_imv_recommendations_t *this)
 {
@@ -395,6 +410,7 @@ recommendations_t* tnc_imv_recommendations_create(linked_list_t *imv_list)
 			.set_reason_string = _set_reason_string,
 			.set_reason_language = _set_reason_language,
 			.create_reason_enumerator = _create_reason_enumerator,
+			.clear_reasons = _clear_reasons,
 			.destroy = _destroy,
 		},
 		.recs = linked_list_create(),

src/libcharon/plugins/tnccs_11/tnccs_11.c

@@ -351,6 +351,7 @@ static void check_and_build_recommendation(private_tnccs_11_t *this)
 			this->batch->add_msg(this->batch, msg);
 		}
 		enumerator->destroy(enumerator);
+		this->recs->clear_reasons(this->recs);
 
 		/* we have reache the final state */
 		this->delete_state = TRUE;

src/libcharon/plugins/tnccs_20/tnccs_20.c

@@ -521,6 +521,7 @@ static void check_and_build_recommendation(private_tnccs_20_t *this)
 			this->batch->add_msg(this->batch, msg);
 		}
 		enumerator->destroy(enumerator);
+		this->recs->clear_reasons(this->recs);
 	}
 }
 

src/libcharon/tnc/imv/imv_recommendations.h

@@ -108,6 +108,12 @@ struct recommendations_t {
 	 * @return				enumerator
 	 */
 	enumerator_t* (*create_reason_enumerator)(recommendations_t *this);
+
+	/**
+	 * Clears all reason entries
+	 */
+	void (*clear_reasons)(recommendations_t *this);
+
 	/**
 	 * Destroys an imv_t object.
 	 */