1 files changed, 295 insertions, 0 deletions
diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_manager.c b/src/libcharon/plugins/tnc_imv/tnc_imv_manager.c
new file mode 100644
index 000000000..559de86d0
--- /dev/null
+++ b/src/libcharon/plugins/tnc_imv/tnc_imv_manager.c
@@ -0,0 +1,295 @@
+/*
+ * Copyright (C) 2006 Mike McCauley
+ * Copyright (C) 2010 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "tnc_imv_manager.h"
+#include "tnc_imv_recommendations.h"
+
+#include <tnc/imv/imv_manager.h>
+#include <tnc/tncifimv.h>
+
+#include <debug.h>
+#include <daemon.h>
+#include <threading/mutex.h>
+
+typedef struct private_tnc_imv_manager_t private_tnc_imv_manager_t;
+
+
+/**
+ * Private data of an imv_manager_t object.
+ */
+struct private_tnc_imv_manager_t {
+
+	/**
+	 * Public members of imv_manager_t.
+	 */
+	imv_manager_t public;
+
+	/**
+	 * Linked list of IMVs
+	 */
+	linked_list_t *imvs;
+
+	/**
+	 * Next IMV ID to be assigned
+	 */
+	TNC_IMVID next_imv_id;
+
+	/**
+	 * Policy defining how to derive final recommendation from individual ones
+	 */
+	recommendation_policy_t policy;
+};
+
+METHOD(imv_manager_t, add, bool,
+	private_tnc_imv_manager_t *this, imv_t *imv)
+{
+	TNC_Version version;
+
+	/* Initialize the IMV module */
+	imv->set_id(imv, this->next_imv_id);
+	if (imv->initialize(imv->get_id(imv), TNC_IFIMV_VERSION_1,
+		TNC_IFIMV_VERSION_1, &version) != TNC_RESULT_SUCCESS)
+	{
+		DBG1(DBG_TNC, "IMV \"%s\" failed to initialize", imv->get_name(imv));
+		return FALSE;
+	}
+	this->imvs->insert_last(this->imvs, imv);
+	this->next_imv_id++;
+
+	if (imv->provide_bind_function(imv->get_id(imv), TNC_TNCS_BindFunction)
+			!= TNC_RESULT_SUCCESS)
+	{
+		DBG1(DBG_TNC, "IMV \"%s\" could failed to obtain bind function",
+					   imv->get_name(imv));
+		this->imvs->remove_last(this->imvs, (void**)&imv);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+METHOD(imv_manager_t, remove_, imv_t*,
+	private_tnc_imv_manager_t *this, TNC_IMVID id)
+{
+	enumerator_t *enumerator;
+	imv_t *imv;
+
+	enumerator = this->imvs->create_enumerator(this->imvs);
+	while (enumerator->enumerate(enumerator, &imv))
+	{
+		if (id == imv->get_id(imv))
+		{
+			this->imvs->remove_at(this->imvs, enumerator);
+			return imv;
+		}
+	}
+	enumerator->destroy(enumerator);
+	return NULL;
+}
+
+METHOD(imv_manager_t, get_recommendation_policy, recommendation_policy_t,
+	private_tnc_imv_manager_t *this)
+{
+	return this->policy;
+}
+
+METHOD(imv_manager_t, create_recommendations, recommendations_t*,
+	private_tnc_imv_manager_t *this)
+{
+	return tnc_imv_recommendations_create(this->imvs);
+}
+
+METHOD(imv_manager_t, enforce_recommendation, bool,
+	private_tnc_imv_manager_t *this, TNC_IMV_Action_Recommendation rec)
+{
+	char *group;
+	identification_t *id;
+	ike_sa_t *ike_sa;
+	auth_cfg_t *auth;
+
+	switch (rec)
+	{
+		case TNC_IMV_ACTION_RECOMMENDATION_ALLOW:
+			DBG1(DBG_TNC, "TNC recommendation is allow");
+			group = "allow";
+			break;
+		case TNC_IMV_ACTION_RECOMMENDATION_ISOLATE:
+			DBG1(DBG_TNC, "TNC recommendation is isolate");
+			group = "isolate";
+			break;
+		case TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS:
+		case TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION:
+		default:
+			DBG1(DBG_TNC, "TNC recommendation is none");
+			return FALSE;
+	}
+	ike_sa = charon->bus->get_sa(charon->bus);
+	if (ike_sa)
+	{
+		auth = ike_sa->get_auth_cfg(ike_sa, FALSE);
+		id = identification_create_from_string(group);
+		auth->add(auth, AUTH_RULE_GROUP, id);
+		DBG1(DBG_TNC, "TNC added group membership '%s'", group);
+	}
+	return TRUE;
+}
+
+
+METHOD(imv_manager_t, notify_connection_change, void,
+	private_tnc_imv_manager_t *this, TNC_ConnectionID id,
+									 TNC_ConnectionState state)
+{
+	enumerator_t *enumerator;
+	imv_t *imv;
+
+	enumerator = this->imvs->create_enumerator(this->imvs);
+	while (enumerator->enumerate(enumerator, &imv))
+	{
+		if (imv->notify_connection_change)
+		{
+			imv->notify_connection_change(imv->get_id(imv), id, state);
+		}
+	}
+	enumerator->destroy(enumerator);
+}
+
+METHOD(imv_manager_t, set_message_types, TNC_Result,
+	private_tnc_imv_manager_t *this, TNC_IMVID id,
+									 TNC_MessageTypeList supported_types,
+									 TNC_UInt32 type_count)
+{
+	enumerator_t *enumerator;
+	imv_t *imv;
+	TNC_Result result = TNC_RESULT_FATAL;
+
+	enumerator = this->imvs->create_enumerator(this->imvs);
+	while (enumerator->enumerate(enumerator, &imv))
+	{
+		if (id == imv->get_id(imv))
+		{
+			imv->set_message_types(imv, supported_types, type_count);
+			result = TNC_RESULT_SUCCESS;
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	return result;
+}
+
+METHOD(imv_manager_t, solicit_recommendation, void,
+	private_tnc_imv_manager_t *this, TNC_ConnectionID id)
+{
+	enumerator_t *enumerator;
+	imv_t *imv;
+
+	enumerator = this->imvs->create_enumerator(this->imvs);
+	while (enumerator->enumerate(enumerator, &imv))
+	{
+		imv->solicit_recommendation(imv->get_id(imv), id);
+	}
+	enumerator->destroy(enumerator);
+}
+
+METHOD(imv_manager_t, receive_message, void,
+	private_tnc_imv_manager_t *this, TNC_ConnectionID connection_id,
+									 TNC_BufferReference message,
+									 TNC_UInt32 message_len,
+									 TNC_MessageType message_type)
+{
+	enumerator_t *enumerator;
+	imv_t *imv;
+
+	enumerator = this->imvs->create_enumerator(this->imvs);
+	while (enumerator->enumerate(enumerator, &imv))
+	{
+		if (imv->receive_message && imv->type_supported(imv, message_type))
+		{
+			imv->receive_message(imv->get_id(imv), connection_id,
+								 message, message_len, message_type);
+		}
+	}
+	enumerator->destroy(enumerator);
+}
+
+METHOD(imv_manager_t, batch_ending, void,
+	private_tnc_imv_manager_t *this, TNC_ConnectionID id)
+{
+	enumerator_t *enumerator;
+	imv_t *imv;
+
+	enumerator = this->imvs->create_enumerator(this->imvs);
+	while (enumerator->enumerate(enumerator, &imv))
+	{
+		if (imv->batch_ending)
+		{
+			imv->batch_ending(imv->get_id(imv), id);
+		}
+	}
+	enumerator->destroy(enumerator);
+}
+
+METHOD(imv_manager_t, destroy, void,
+	private_tnc_imv_manager_t *this)
+{
+	imv_t *imv;
+
+	while (this->imvs->remove_last(this->imvs, (void**)&imv) == SUCCESS)
+	{
+		if (imv->terminate &&
+			imv->terminate(imv->get_id(imv)) != TNC_RESULT_SUCCESS)
+		{
+			DBG1(DBG_TNC, "IMV \"%s\" not terminated successfully",
+						   imv->get_name(imv));
+		}
+		imv->destroy(imv);
+	}
+	this->imvs->destroy(this->imvs);
+	free(this);
+}
+
+/**
+ * Described in header.
+ */
+imv_manager_t* tnc_imv_manager_create(void)
+{
+	private_tnc_imv_manager_t *this;
+	recommendation_policy_t policy;
+
+	INIT(this,
+		.public = {
+			.add = _add,
+			.remove = _remove_, /* avoid name conflict with stdio.h */
+			.get_recommendation_policy = _get_recommendation_policy,
+			.create_recommendations = _create_recommendations,
+			.enforce_recommendation = _enforce_recommendation,
+			.notify_connection_change = _notify_connection_change,
+			.set_message_types = _set_message_types,
+			.solicit_recommendation = _solicit_recommendation,
+			.receive_message = _receive_message,
+			.batch_ending = _batch_ending,
+			.destroy = _destroy,
+		},
+		.imvs = linked_list_create(),
+		.next_imv_id = 1,
+	);
+	policy = enum_from_name(recommendation_policy_names,
+				lib->settings->get_str(lib->settings,
+					"charon.plugins.tnc-imv.recommendation_policy", "default"));
+	this->policy = (policy != -1) ? policy : RECOMMENDATION_POLICY_DEFAULT;
+	DBG1(DBG_TNC, "TNC recommendation policy is '%N'",
+				   recommendation_policy_names, this->policy);
+
+	return &this->public;
+}