created empty imc_attestation and imv_attestation plugin hulls

src/libimcv/plugins/imc_attestation/Makefile.am

@@ -0,0 +1,16 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libtncif \
+	-I$(top_srcdir)/src/libimcv
+
+AM_CFLAGS = -rdynamic
+
+plugin_LTLIBRARIES = libstrongswan-imc-attestation.la
+
+libstrongswan_imc_attestation_la_LIBADD = $(top_builddir)/src/libimcv/libimcv.la \
+	$(top_builddir)/src/libstrongswan/libstrongswan.la
+
+libstrongswan_imc_attestation_la_SOURCES = imc_attestation.c \
+	imc_attestation_state.h imc_attestation_state.c
+
+libstrongswan_imc_attestation_la_LDFLAGS = -module -avoid-version
+

src/libimcv/plugins/imc_attestation/imc_attestation.c

@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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 "imc_attestation_state.h"
+
+#include <imc/imc_agent.h>
+#include <pa_tnc/pa_tnc_msg.h>
+#include <ietf/ietf_attr.h>
+#include <ietf/ietf_attr_pa_tnc_error.h>
+#include <tcg/tcg_attr.h>
+
+#include <pen/pen.h>
+
+#include <debug.h>
+
+/* IMC definitions */
+
+static const char imc_name[] = "Attestation";
+
+#define IMC_VENDOR_ID	PEN_ITA
+#define IMC_SUBTYPE		0x02
+
+static imc_agent_t *imc_attestation;
+ 
+/**
+ * see section 3.7.1 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_Initialize(TNC_IMCID imc_id,
+							  TNC_Version min_version,
+							  TNC_Version max_version,
+							  TNC_Version *actual_version)
+{
+	if (imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has already been initialized", imc_name);
+		return TNC_RESULT_ALREADY_INITIALIZED;
+	}
+	imc_attestation = imc_agent_create(imc_name, IMC_VENDOR_ID, IMC_SUBTYPE,
+								imc_id, actual_version);
+	if (!imc_attestation)
+	{
+		return TNC_RESULT_FATAL;
+	}
+	if (min_version > TNC_IFIMC_VERSION_1 || max_version < TNC_IFIMC_VERSION_1)
+	{
+		DBG1(DBG_IMC, "no common IF-IMC version");
+		return TNC_RESULT_NO_COMMON_VERSION;
+	}
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 3.7.2 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id,
+										  TNC_ConnectionID connection_id,
+										  TNC_ConnectionState new_state)
+{
+	imc_state_t *state;
+	imc_attestation_state_t *test_state;
+
+	if (!imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	switch (new_state)
+	{
+		case TNC_CONNECTION_STATE_CREATE:
+			state = imc_attestation_state_create(connection_id);
+			return imc_attestation->create_state(imc_attestation, state);
+		case TNC_CONNECTION_STATE_DELETE:
+			return imc_attestation->delete_state(imc_attestation, connection_id);
+		case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
+		case TNC_CONNECTION_STATE_ACCESS_NONE:
+		default:
+			return imc_attestation->change_state(imc_attestation, connection_id, new_state);
+	}
+}
+
+static TNC_Result send_message(TNC_ConnectionID connection_id)
+{
+	pa_tnc_msg_t *msg;
+	pa_tnc_attr_t *attr;
+	imc_state_t *state;
+	imc_attestation_state_t *test_state;
+	TNC_Result result;
+
+	if (!imc_attestation->get_state(imc_attestation, connection_id, &state))
+	{
+		return TNC_RESULT_FATAL;
+	}
+	test_state = (imc_attestation_state_t*)state;
+	msg = pa_tnc_msg_create();
+	/**
+	 * add TCG PTS attributes
+	 */
+	msg->build(msg);
+	result = imc_attestation->send_message(imc_attestation, connection_id,
+									msg->get_encoding(msg));	
+	msg->destroy(msg);
+
+	return result;
+}
+
+/**
+ * see section 3.7.3 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_BeginHandshake(TNC_IMCID imc_id,
+								  TNC_ConnectionID connection_id)
+{
+	if (!imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return send_message(connection_id);
+}
+
+/**
+ * see section 3.7.4 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_id,
+								  TNC_ConnectionID connection_id,
+								  TNC_BufferReference msg,
+								  TNC_UInt32 msg_len,
+								  TNC_MessageType msg_type)
+{
+	pa_tnc_msg_t *pa_tnc_msg;
+	pa_tnc_attr_t *attr;
+	enumerator_t *enumerator;
+	TNC_Result result;
+	bool fatal_error = FALSE;
+
+	if (!imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+
+	/* parse received PA-TNC message and automatically handle any errors */ 
+	result = imc_attestation->receive_message(imc_attestation, connection_id,
+									   chunk_create(msg, msg_len), msg_type,
+									   &pa_tnc_msg);
+
+	/* no parsed PA-TNC attributes available if an error occurred */
+	if (!pa_tnc_msg)
+	{
+		return result;
+	}
+
+	/* analyze PA-TNC attributes */
+	enumerator = pa_tnc_msg->create_attribute_enumerator(pa_tnc_msg);
+	while (enumerator->enumerate(enumerator, &attr))
+	{
+		if (attr->get_vendor_id(attr) == PEN_IETF &&
+			attr->get_type(attr) == IETF_ATTR_PA_TNC_ERROR)
+		{
+			ietf_attr_pa_tnc_error_t *error_attr;
+			pa_tnc_error_code_t error_code;
+			chunk_t msg_info, attr_info;
+
+			error_attr = (ietf_attr_pa_tnc_error_t*)attr;
+			error_code = error_attr->get_error_code(error_attr);
+			msg_info = error_attr->get_msg_info(error_attr);
+
+			DBG1(DBG_IMC, "received PA-TNC error '%N' concerning message %#B",
+				 pa_tnc_error_code_names, error_code, &msg_info);
+			switch (error_code)
+			{
+				case PA_ERROR_ATTR_TYPE_NOT_SUPPORTED:
+					attr_info = error_attr->get_attr_info(error_attr);
+					DBG1(DBG_IMC, "  unsupported attribute %#B", &attr_info);
+					break;
+				default:
+					break;
+			}
+			fatal_error = TRUE;
+		}
+		else if (attr->get_vendor_id(attr) == PEN_TCG)
+		{
+			/**
+			 * Handle TCG PTS attributes
+			 */
+		}
+	}
+	enumerator->destroy(enumerator);
+	pa_tnc_msg->destroy(pa_tnc_msg);
+
+	/* if no error occurred then always return the same response */
+	return fatal_error ? TNC_RESULT_FATAL : send_message(connection_id);
+}
+
+/**
+ * see section 3.7.5 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_BatchEnding(TNC_IMCID imc_id,
+							   TNC_ConnectionID connection_id)
+{
+	if (!imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 3.7.6 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_Terminate(TNC_IMCID imc_id)
+{
+	if (!imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	imc_attestation->destroy(imc_attestation);
+	imc_attestation = NULL;
+
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 4.2.8.1 of TCG TNC IF-IMC Specification 1.2
+ */
+TNC_Result TNC_IMC_ProvideBindFunction(TNC_IMCID imc_id,
+									   TNC_TNCC_BindFunctionPointer bind_function)
+{
+	if (!imc_attestation)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return imc_attestation->bind_functions(imc_attestation, bind_function);
+}

src/libimcv/plugins/imc_attestation/imc_attestation_state.c

@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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 "imc_attestation_state.h"
+
+#include <debug.h>
+
+typedef struct private_imc_attestation_state_t private_imc_attestation_state_t;
+
+/**
+ * Private data of an imc_attestation_state_t object.
+ */
+struct private_imc_attestation_state_t {
+
+	/**
+	 * Public members of imc_attestation_state_t
+	 */
+	imc_attestation_state_t public;
+
+	/**
+	 * TNCCS connection ID
+	 */
+	TNC_ConnectionID connection_id;
+
+	/**
+	 * TNCCS connection state
+	 */
+	TNC_ConnectionState state;
+
+};
+
+METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
+	private_imc_attestation_state_t *this)
+{
+	return this->connection_id;
+}
+
+METHOD(imc_state_t, change_state, void,
+	private_imc_attestation_state_t *this, TNC_ConnectionState new_state)
+{
+	this->state = new_state;
+}
+
+METHOD(imc_state_t, destroy, void,
+	private_imc_attestation_state_t *this)
+{
+	free(this);
+}
+
+/**
+ * Described in header.
+ */
+imc_state_t *imc_attestation_state_create(TNC_ConnectionID connection_id)
+{
+	private_imc_attestation_state_t *this;
+
+	INIT(this,
+		.public = {
+			.interface = {
+				.get_connection_id = _get_connection_id,
+				.change_state = _change_state,
+				.destroy = _destroy,
+			},
+		},
+		.state = TNC_CONNECTION_STATE_CREATE,
+		.connection_id = connection_id,
+	);
+	
+	return &this->public.interface;
+}
+
+

src/libimcv/plugins/imc_attestation/imc_attestation_state.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+/**
+ *
+ * @defgroup imc_attestation_state_t imc_attestation_state
+ * @{ @ingroup imc_attestation_state
+ */
+
+#ifndef IMC_ATTESTATION_STATE_H_
+#define IMC_ATTESTATION_STATE_H_
+
+#include <imc/imc_state.h>
+#include <library.h>
+
+typedef struct imc_attestation_state_t imc_attestation_state_t;
+
+/**
+ * Internal state of an imc_attestation_t connection instance
+ */
+struct imc_attestation_state_t {
+
+	/**
+	 * imc_state_t interface
+	 */
+	imc_state_t interface;
+};
+
+/**
+ * Create an imc_attestation_state_t instance
+ *
+ * @param id		connection ID
+ * @param rounds	total number of IMC re-measurements
+ */
+imc_state_t* imc_attestation_state_create(TNC_ConnectionID id);
+
+#endif /** IMC_ATTESTATION_STATE_H_ @}*/

src/libimcv/plugins/imv_attestation/Makefile.am

@@ -0,0 +1,16 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libtncif \
+	-I$(top_srcdir)/src/libimcv
+
+AM_CFLAGS = -rdynamic
+
+plugin_LTLIBRARIES = libstrongswan-imv-attestation.la
+
+libstrongswan_imv_attestation_la_LIBADD = $(top_builddir)/src/libimcv/libimcv.la \
+	$(top_builddir)/src/libstrongswan/libstrongswan.la
+
+libstrongswan_imv_attestation_la_SOURCES = imv_attestation.c \
+	imv_attestation_state.h imv_attestation_state.c
+
+libstrongswan_imv_attestation_la_LDFLAGS = -module -avoid-version
+

src/libimcv/plugins/imv_attestation/imv_attestation.c

@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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 "imv_attestation_state.h"
+
+#include <imv/imv_agent.h>
+#include <pa_tnc/pa_tnc_msg.h>
+#include <ietf/ietf_attr.h>
+#include <ietf/ietf_attr_pa_tnc_error.h>
+#include <tcg/tcg_attr.h>
+
+#include <pen/pen.h>
+
+#include <debug.h>
+
+/* IMV definitions */
+
+static const char imv_name[] = "Attestation";
+
+#define IMV_VENDOR_ID	PEN_ITA
+#define IMV_SUBTYPE		0x02
+
+static imv_agent_t *imv_attestation;
+
+/**
+ * see section 3.7.1 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_Initialize(TNC_IMVID imv_id,
+							  TNC_Version min_version,
+							  TNC_Version max_version,
+							  TNC_Version *actual_version)
+{
+	if (imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name);
+		return TNC_RESULT_ALREADY_INITIALIZED;
+	}
+	imv_attestation = imv_agent_create(imv_name, IMV_VENDOR_ID, IMV_SUBTYPE,
+								imv_id, actual_version);
+	if (!imv_attestation)
+	{
+		return TNC_RESULT_FATAL;
+	}
+	if (min_version > TNC_IFIMV_VERSION_1 || max_version < TNC_IFIMV_VERSION_1)
+	{
+		DBG1(DBG_IMV, "no common IF-IMV version");
+		return TNC_RESULT_NO_COMMON_VERSION;
+	}
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 3.7.2 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_NotifyConnectionChange(TNC_IMVID imv_id,
+										  TNC_ConnectionID connection_id,
+										  TNC_ConnectionState new_state)
+{
+	imv_state_t *state;
+	imv_attestation_state_t *attestation_state;
+
+	if (!imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	switch (new_state)
+	{
+		case TNC_CONNECTION_STATE_CREATE:
+			state = imv_attestation_state_create(connection_id);
+			return imv_attestation->create_state(imv_attestation, state);
+		case TNC_CONNECTION_STATE_DELETE:
+			return imv_attestation->delete_state(imv_attestation, connection_id);
+		case TNC_CONNECTION_STATE_HANDSHAKE:
+			if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
+			{
+				return TNC_RESULT_FATAL;
+			}
+			state->change_state(state, new_state);
+			attestation_state = (imv_attestation_state_t*)state;
+			/**
+			 * do any attestation specific configuration here
+			 */
+			return TNC_RESULT_SUCCESS;
+		default:
+			return imv_attestation->change_state(imv_attestation, connection_id, new_state);
+	}
+}
+
+static TNC_Result send_message(TNC_ConnectionID connection_id)
+{
+	pa_tnc_msg_t *msg;
+	pa_tnc_attr_t *attr;
+	TNC_Result result;
+
+	msg = pa_tnc_msg_create();
+	/**
+	 * add TCG PTS attributes
+	 */
+	msg->build(msg);
+	result = imv_attestation->send_message(imv_attestation, connection_id,
+									msg->get_encoding(msg));	
+	msg->destroy(msg);
+
+	return result;
+}
+
+/**
+ * see section 3.7.3 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
+								  TNC_ConnectionID connection_id,
+								  TNC_BufferReference msg,
+								  TNC_UInt32 msg_len,
+								  TNC_MessageType msg_type)
+{
+	pa_tnc_msg_t *pa_tnc_msg;
+	pa_tnc_attr_t *attr;
+	imv_state_t *state;
+	imv_attestation_state_t *imv_attestation_state;
+	enumerator_t *enumerator;
+	TNC_Result result;
+	bool fatal_error = FALSE;
+
+	if (!imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+
+	/* get current IMV state */
+	if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
+	{
+		return TNC_RESULT_FATAL;
+	}
+
+	/* parse received PA-TNC message and automatically handle any errors */ 
+	result = imv_attestation->receive_message(imv_attestation, connection_id,
+									   chunk_create(msg, msg_len), msg_type,
+									   &pa_tnc_msg);
+
+	/* no parsed PA-TNC attributes available if an error occurred */
+	if (!pa_tnc_msg)
+	{
+		return result;
+	}
+
+	/* analyze PA-TNC attributes */
+	enumerator = pa_tnc_msg->create_attribute_enumerator(pa_tnc_msg);
+	while (enumerator->enumerate(enumerator, &attr))
+	{
+		if (attr->get_vendor_id(attr) == PEN_IETF &&
+			attr->get_type(attr) == IETF_ATTR_PA_TNC_ERROR)
+		{
+			ietf_attr_pa_tnc_error_t *error_attr;
+			pa_tnc_error_code_t error_code;
+			chunk_t msg_info, attr_info;
+
+			error_attr = (ietf_attr_pa_tnc_error_t*)attr;
+			error_code = error_attr->get_error_code(error_attr);
+			msg_info = error_attr->get_msg_info(error_attr);
+
+			DBG1(DBG_IMV, "received PA-TNC error '%N' concerning message %#B",
+				 pa_tnc_error_code_names, error_code, &msg_info);
+			switch (error_code)
+			{
+				case PA_ERROR_ATTR_TYPE_NOT_SUPPORTED:
+					attr_info = error_attr->get_attr_info(error_attr);
+					DBG1(DBG_IMV, "  unsupported attribute %#B", &attr_info);
+					break;
+				default:
+					break;
+			}
+			fatal_error = TRUE;
+		}
+		else if (attr->get_vendor_id(attr) == PEN_TCG)
+		{
+			/**
+			 * Handle TCG PTS attributes
+			 */
+		}
+	}
+	enumerator->destroy(enumerator);
+	pa_tnc_msg->destroy(pa_tnc_msg);
+
+	if (fatal_error)
+	{
+		state->set_recommendation(state,
+								TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
+								TNC_IMV_EVALUATION_RESULT_ERROR);			  
+		return imv_attestation->provide_recommendation(imv_attestation, connection_id);
+	}
+
+	return imv_attestation->provide_recommendation(imv_attestation, connection_id);
+}
+
+/**
+ * see section 3.7.4 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_SolicitRecommendation(TNC_IMVID imv_id,
+										 TNC_ConnectionID connection_id)
+{
+	if (!imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return imv_attestation->provide_recommendation(imv_attestation, connection_id);
+}
+
+/**
+ * see section 3.7.5 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_BatchEnding(TNC_IMVID imv_id,
+							   TNC_ConnectionID connection_id)
+{
+	if (!imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 3.7.6 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id)
+{
+	if (!imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	imv_attestation->destroy(imv_attestation);
+	imv_attestation = NULL;
+
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 4.2.8.1 of TCG TNC IF-IMV Specification 1.2
+ */
+TNC_Result TNC_IMV_ProvideBindFunction(TNC_IMVID imv_id,
+									   TNC_TNCS_BindFunctionPointer bind_function)
+{
+	if (!imv_attestation)
+	{
+		DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return imv_attestation->bind_functions(imv_attestation, bind_function);
+}

src/libimcv/plugins/imv_attestation/imv_attestation_state.c

@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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 "imv_attestation_state.h"
+
+#include <utils/lexparser.h>
+#include <debug.h>
+
+typedef struct private_imv_attestation_state_t private_imv_attestation_state_t;
+
+/**
+ * Private data of an imv_attestation_state_t object.
+ */
+struct private_imv_attestation_state_t {
+
+	/**
+	 * Public members of imv_attestation_state_t
+	 */
+	imv_attestation_state_t public;
+
+	/**
+	 * TNCCS connection ID
+	 */
+	TNC_ConnectionID connection_id;
+
+	/**
+	 * TNCCS connection state
+	 */
+	TNC_ConnectionState state;
+
+	/**
+	 * IMV action recommendation
+	 */
+	TNC_IMV_Action_Recommendation rec;
+
+	/**
+	 * IMV evaluation result
+	 */
+	TNC_IMV_Evaluation_Result eval;
+};
+
+typedef struct entry_t entry_t;
+
+/**
+ * Define an internal reason string entry
+ */
+struct entry_t {
+	char *lang;
+	char *string;
+};
+
+/**
+ * Table of multi-lingual reason string entries 
+ */
+static entry_t reasons[] = {
+	{ "en", "IMC Attestation ..." },
+	{ "mn", "IMC Attestation ..." },
+	{ "de", "IMC Attestation ..." },
+};
+
+METHOD(imv_state_t, get_connection_id, TNC_ConnectionID,
+	private_imv_attestation_state_t *this)
+{
+	return this->connection_id;
+}
+
+METHOD(imv_state_t, change_state, void,
+	private_imv_attestation_state_t *this, TNC_ConnectionState new_state)
+{
+	this->state = new_state;
+}
+
+METHOD(imv_state_t, get_recommendation, void,
+	private_imv_attestation_state_t *this, TNC_IMV_Action_Recommendation *rec,
+									TNC_IMV_Evaluation_Result *eval)
+{
+	*rec = this->rec;
+	*eval = this->eval;
+}
+
+METHOD(imv_state_t, set_recommendation, void,
+	private_imv_attestation_state_t *this, TNC_IMV_Action_Recommendation rec,
+									TNC_IMV_Evaluation_Result eval)
+{
+	this->rec = rec;
+	this->eval = eval;
+}
+
+METHOD(imv_state_t, get_reason_string, bool,
+	private_imv_attestation_state_t *this, chunk_t preferred_language,
+	chunk_t *reason_string, chunk_t *reason_language)
+{
+	chunk_t pref_lang, lang;
+	u_char *pos;
+	int i;
+
+	while (eat_whitespace(&preferred_language))
+	{
+		if (!extract_token(&pref_lang, ',', &preferred_language))
+		{
+			/* last entry in a comma-separated list or single entry */
+			pref_lang = preferred_language;
+		}
+
+		/* eat trailing whitespace */
+		pos = pref_lang.ptr + pref_lang.len - 1;
+		while (pref_lang.len && *pos-- == ' ')
+		{
+			pref_lang.len--;
+		}
+
+		for (i = 0 ; i < countof(reasons); i++)
+		{
+			lang = chunk_create(reasons[i].lang, strlen(reasons[i].lang));
+			if (chunk_equals(lang, pref_lang))
+			{
+				*reason_language = lang;
+				*reason_string = chunk_create(reasons[i].string, 
+										strlen(reasons[i].string));
+				return TRUE;
+			}
+		}
+	}
+
+	/* no preferred language match found - use the default language */
+	*reason_string =   chunk_create(reasons[0].string,
+									strlen(reasons[0].string));
+	*reason_language = chunk_create(reasons[0].lang, 
+									strlen(reasons[0].lang));
+	return TRUE;
+}
+
+METHOD(imv_state_t, destroy, void,
+	private_imv_attestation_state_t *this)
+{
+	free(this);
+}
+
+/**
+ * Described in header.
+ */
+imv_state_t *imv_attestation_state_create(TNC_ConnectionID connection_id)
+{
+	private_imv_attestation_state_t *this;
+
+	INIT(this,
+		.public = {
+			.interface = {
+				.get_connection_id = _get_connection_id,
+				.change_state = _change_state,
+				.get_recommendation = _get_recommendation,
+				.set_recommendation = _set_recommendation,
+				.get_reason_string = _get_reason_string,
+				.destroy = _destroy,
+			},
+		},
+		.state = TNC_CONNECTION_STATE_CREATE,
+		.rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
+		.eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW,
+	);
+	
+	return &this->public.interface;
+}
+
+

src/libimcv/plugins/imv_attestation/imv_attestation_state.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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.
+ */
+
+/**
+ *
+ * @defgroup imv_attestation_state_t imv_attestation_state
+ * @{ @ingroup imv_attestation_state
+ */
+
+#ifndef IMV_ATTESTATION_STATE_H_
+#define IMV_ATTESTATION_STATE_H_
+
+#include <imv/imv_state.h>
+#include <library.h>
+
+typedef struct imv_attestation_state_t imv_attestation_state_t;
+
+/**
+ * Internal state of an imv_attestation_t connection instance
+ */
+struct imv_attestation_state_t {
+
+	/**
+	 * imv_state_t interface
+	 */
+	imv_state_t interface;
+
+	/**
+	 * Add any setters and getters here
+	 */
+};
+
+/**
+ * Create an imv_attestation_state_t instance
+ *
+ * @param id		connection ID
+ */
+imv_state_t* imv_attestation_state_create(TNC_ConnectionID id);
+
+#endif /** IMV_ATTESTATION_STATE_H_ @}*/