Imported Upstream version 5.1.1

1 files changed, 0 insertions, 944 deletions

diff --git a/src/libcharon/plugins/tnccs_20/tnccs_20.c b/src/libcharon/plugins/tnccs_20/tnccs_20.c
deleted file mode 100644
index 4c8f3a925..000000000
--- a/src/libcharon/plugins/tnccs_20/tnccs_20.c
+++ /dev/null
@@ -1,944 +0,0 @@
-/*
- * Copyright (C) 2010 Sansar Choinyanbuu
- * Copyright (C) 2010-2013 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 "tnccs_20.h"
-#include "batch/pb_tnc_batch.h"
-#include "messages/pb_tnc_msg.h"
-#include "messages/pb_pa_msg.h"
-#include "messages/pb_error_msg.h"
-#include "messages/pb_assessment_result_msg.h"
-#include "messages/pb_access_recommendation_msg.h"
-#include "messages/pb_remediation_parameters_msg.h"
-#include "messages/pb_reason_string_msg.h"
-#include "messages/pb_language_preference_msg.h"
-#include "state_machine/pb_tnc_state_machine.h"
-
-#include <tncif_names.h>
-#include <tncif_pa_subtypes.h>
-
-#include <tnc/tnc.h>
-#include <tnc/tnccs/tnccs_manager.h>
-#include <tnc/imc/imc_manager.h>
-#include <tnc/imv/imv_manager.h>
-
-#include <utils/debug.h>
-#include <daemon.h>
-#include <threading/mutex.h>
-#include <collections/linked_list.h>
-#include <pen/pen.h>
-
-typedef struct private_tnccs_20_t private_tnccs_20_t;
-
-/**
- * Private data of a tnccs_20_t object.
- */
-struct private_tnccs_20_t {
-
-	/**
-	 * Public tnccs_t interface.
-	 */
-	tnccs_t public;
-
-	/**
-	 * TNCC if TRUE, TNCS if FALSE
-	 */
-	bool is_server;
-
-	/**
-	 * Server identity
-	 */
-	identification_t *server;
-
-	/**
-	 * Client identity
-	 */
-	identification_t *peer;
-
-	/**
-	 * Underlying TNC IF-T transport protocol
-	 */
-	tnc_ift_type_t transport;
-
-	/**
-	 * Type of TNC client authentication
-	 */
-	u_int32_t auth_type;
-
-	/**
-	 * PB-TNC State Machine
-	 */
-	pb_tnc_state_machine_t *state_machine;
-
-	/**
-	 * Connection ID assigned to this TNCCS connection
-	 */
-	TNC_ConnectionID connection_id;
-
-	/**
-	 * PB-TNC messages to be sent
-	 */
-	linked_list_t *messages;
-
-	/**
-	 * Type of PB-TNC batch being constructed
-	 */
-	pb_tnc_batch_type_t batch_type;
-
-	/**
-	 * Maximum PB-TNC batch size
-	 */
-	size_t max_batch_len;
-
-	/**
-	 * Maximum PA-TNC message size
-	 */
-	size_t max_msg_len;
-
-	/**
-	 * Mutex locking the batch in construction
-	 */
-	mutex_t *mutex;
-
-	/**
-	 * Flag set while processing
-	 */
-	bool fatal_error;
-
-	/**
-	 * Flag set by IMC/IMV RequestHandshakeRetry() function
-	 */
-	bool request_handshake_retry;
-
-	/**
-	  * SendMessage() by IMC/IMV only allowed if flag is set
-	  */
-	bool send_msg;
-
-	/**
-	 * Set of IMV recommendations  (TNC Server only)
-	 */
-	recommendations_t *recs;
-
-};
-
-/**
- * If the batch type changes then delete all accumulated PB-TNC messages
- */
-void change_batch_type(private_tnccs_20_t *this, pb_tnc_batch_type_t batch_type)
-{
-	pb_tnc_msg_t *msg;
-
-	if (batch_type != this->batch_type)
-	{
-		if (this->batch_type != PB_BATCH_NONE)
-		{
-			DBG1(DBG_TNC, "cancelling PB-TNC %N batch",
-				 pb_tnc_batch_type_names, this->batch_type);
-
-			while (this->messages->remove_last(this->messages,
-											  (void**)&msg) == SUCCESS)
-			{
-				msg->destroy(msg);
-			}
-		}
-		this->batch_type = batch_type;
-	}
-}
-
-METHOD(tnccs_t, send_msg, TNC_Result,
-	private_tnccs_20_t* this, TNC_IMCID imc_id, TNC_IMVID imv_id,
-						      TNC_UInt32 msg_flags,
-							  TNC_BufferReference msg,
-							  TNC_UInt32 msg_len,
-						      TNC_VendorID msg_vid,
-						      TNC_MessageSubtype msg_subtype)
-{
-	pb_tnc_msg_t *pb_tnc_msg;
-	pb_tnc_batch_type_t batch_type;
-	enum_name_t *pa_subtype_names;
-	bool excl;
-
-	if (!this->send_msg)
-	{
-		DBG1(DBG_TNC, "%s %u not allowed to call SendMessage()",
-			this->is_server ? "IMV" : "IMC",
-			this->is_server ? imv_id : imc_id);
-		return TNC_RESULT_ILLEGAL_OPERATION;
-	}
-	excl = (msg_flags & TNC_MESSAGE_FLAGS_EXCLUSIVE) != 0;
-
-	pb_tnc_msg = pb_pa_msg_create(msg_vid, msg_subtype, imc_id, imv_id,
-								  excl, chunk_create(msg, msg_len));
-
-	pa_subtype_names = get_pa_subtype_names(msg_vid);
-	if (pa_subtype_names)
-	{
-		DBG2(DBG_TNC, "creating PB-PA message type '%N/%N' 0x%06x/0x%08x",
-					   pen_names, msg_vid, pa_subtype_names, msg_subtype,
-					   msg_vid, msg_subtype);
-	}
-	else
-	{
-		DBG2(DBG_TNC, "creating PB-PA message type '%N' 0x%06x/0x%08x",
-					   pen_names, msg_vid, msg_vid, msg_subtype);
-	}
-
-	/* adding PA message to SDATA or CDATA batch only */
-	batch_type = this->is_server ? PB_BATCH_SDATA : PB_BATCH_CDATA;
-	this->mutex->lock(this->mutex);
-	if (this->batch_type == PB_BATCH_NONE)
-	{
-		this->batch_type = batch_type;
-	}
-	if (this->batch_type == batch_type)
-	{
-		this->messages->insert_last(this->messages, pb_tnc_msg);
-	}
-	else
-	{
-		pb_tnc_msg->destroy(pb_tnc_msg);
-	}
-	this->mutex->unlock(this->mutex);
-	return TNC_RESULT_SUCCESS;
-}
-
-/**
- * Handle a single PB-TNC message according to its type
- */
-static void handle_message(private_tnccs_20_t *this, pb_tnc_msg_t *msg)
-{
-	switch (msg->get_type(msg))
-	{
-		case PB_MSG_EXPERIMENTAL:
-			/* nothing to do */
-			break;
-		case PB_MSG_PA:
-		{
-			pb_pa_msg_t *pa_msg;
-			pen_type_t msg_subtype;
-			u_int16_t imc_id, imv_id;
-			chunk_t msg_body;
-			bool excl;
-			enum_name_t *pa_subtype_names;
-
-			pa_msg = (pb_pa_msg_t*)msg;
-			msg_subtype = pa_msg->get_subtype(pa_msg);
-			msg_body = pa_msg->get_body(pa_msg);
-			imc_id = pa_msg->get_collector_id(pa_msg);
-			imv_id = pa_msg->get_validator_id(pa_msg);
-			excl = pa_msg->get_exclusive_flag(pa_msg);
-
-			pa_subtype_names = get_pa_subtype_names(msg_subtype.vendor_id);
-			if (pa_subtype_names)
-			{
-				DBG2(DBG_TNC, "handling PB-PA message type '%N/%N' 0x%06x/0x%08x",
-					 pen_names, msg_subtype.vendor_id, pa_subtype_names,
-					 msg_subtype.type, msg_subtype.vendor_id, msg_subtype.type);
-			}
-			else
-			{
-				DBG2(DBG_TNC, "handling PB-PA message type '%N' 0x%06x/0x%08x",
-					 pen_names, msg_subtype.vendor_id, msg_subtype.vendor_id,
-					 msg_subtype.type);
-			}
-
-			this->send_msg = TRUE;
-			if (this->is_server)
-			{
-				tnc->imvs->receive_message(tnc->imvs, this->connection_id,
-										   excl, msg_body.ptr, msg_body.len,
-										   msg_subtype.vendor_id,
-										   msg_subtype.type, imc_id, imv_id);
-			}
-			else
-			{
-				tnc->imcs->receive_message(tnc->imcs, this->connection_id,
-										   excl, msg_body.ptr, msg_body.len,
-										   msg_subtype.vendor_id,
-										   msg_subtype.type, imv_id, imc_id);
-			}
-			this->send_msg = FALSE;
-			break;
-		}
-		case PB_MSG_ASSESSMENT_RESULT:
-		{
-			pb_assessment_result_msg_t *assess_msg;
-			u_int32_t result;
-
-			assess_msg = (pb_assessment_result_msg_t*)msg;
-			result = assess_msg->get_assessment_result(assess_msg);
-			DBG1(DBG_TNC, "PB-TNC assessment result is '%N'",
-				 TNC_IMV_Evaluation_Result_names, result);
-			break;
-		}
-		case PB_MSG_ACCESS_RECOMMENDATION:
-		{
-			pb_access_recommendation_msg_t *rec_msg;
-			pb_access_recommendation_code_t rec;
-			TNC_ConnectionState state = TNC_CONNECTION_STATE_ACCESS_NONE;
-
-			rec_msg = (pb_access_recommendation_msg_t*)msg;
-			rec = rec_msg->get_access_recommendation(rec_msg);
-			DBG1(DBG_TNC, "PB-TNC access recommendation is '%N'",
-						   pb_access_recommendation_code_names, rec);
-			switch (rec)
-			{
-				case PB_REC_ACCESS_ALLOWED:
-					state = TNC_CONNECTION_STATE_ACCESS_ALLOWED;
-					break;
-				case PB_REC_ACCESS_DENIED:
-					state = TNC_CONNECTION_STATE_ACCESS_NONE;
-					break;
-				case PB_REC_QUARANTINED:
-					state = TNC_CONNECTION_STATE_ACCESS_ISOLATED;
-			}
-			tnc->imcs->notify_connection_change(tnc->imcs, this->connection_id,
-												state);
-			break;
-		}
-		case PB_MSG_REMEDIATION_PARAMETERS:
-		{
-			pb_remediation_parameters_msg_t *rem_msg;
-			pen_type_t parameters_type;
-			chunk_t parameters, string, lang_code;
-
-			rem_msg = (pb_remediation_parameters_msg_t*)msg;
-			parameters_type = rem_msg->get_parameters_type(rem_msg);
-			parameters = rem_msg->get_parameters(rem_msg);
-
-			if (parameters_type.vendor_id == PEN_IETF)
-			{
-				switch (parameters_type.type)
-				{
-					case PB_REMEDIATION_URI:
-						DBG1(DBG_TNC, "remediation uri: %.*s",
-									   parameters.len, parameters.ptr);
-						break;
-					case PB_REMEDIATION_STRING:
-						string = rem_msg->get_string(rem_msg, &lang_code);
-						DBG1(DBG_TNC, "remediation string: [%.*s]\n%.*s",
-									   lang_code.len, lang_code.ptr,
-									   string.len, string.ptr);
-						break;
-					default:
-						DBG1(DBG_TNC, "remediation parameters: %B", &parameters);
-				}
-			}
-			else
-			{
-				DBG1(DBG_TNC, "remediation parameters: %B", &parameters);
-			}
-			break;
-		}
-		case PB_MSG_ERROR:
-		{
-			pb_error_msg_t *err_msg;
-			bool fatal;
-			u_int32_t vendor_id;
-			u_int16_t error_code;
-
-			err_msg = (pb_error_msg_t*)msg;
-			fatal = err_msg->get_fatal_flag(err_msg);
-			vendor_id = err_msg->get_vendor_id(err_msg);
-			error_code = err_msg->get_error_code(err_msg);
-
-			if (fatal)
-			{
-				this->fatal_error = TRUE;
-			}
-
-			if (vendor_id == PEN_IETF)
-			{
-				switch (error_code)
-				{
-					case PB_ERROR_INVALID_PARAMETER:
-					case PB_ERROR_UNSUPPORTED_MANDATORY_MSG:
-						DBG1(DBG_TNC, "received %s PB-TNC error '%N' "
-									  "(offset %u bytes)",
-									  fatal ? "fatal" : "non-fatal",
-									  pb_tnc_error_code_names, error_code,
-									  err_msg->get_offset(err_msg));
-						break;
-					case PB_ERROR_VERSION_NOT_SUPPORTED:
-						DBG1(DBG_TNC, "received %s PB-TNC error '%N' "
-									  "caused by bad version 0x%02x",
-									  fatal ? "fatal" : "non-fatal",
-									  pb_tnc_error_code_names, error_code,
-									  err_msg->get_bad_version(err_msg));
-						break;
-					case PB_ERROR_UNEXPECTED_BATCH_TYPE:
-					case PB_ERROR_LOCAL_ERROR:
-					default:
-						DBG1(DBG_TNC, "received %s PB-TNC error '%N'",
-									  fatal ? "fatal" : "non-fatal",
-									  pb_tnc_error_code_names, error_code);
-						break;
-				}
-			}
-			else
-			{
-				DBG1(DBG_TNC, "received %s PB-TNC error (%u) "
-							  "with Vendor ID 0x%06x",
-							  fatal ? "fatal" : "non-fatal",
-							  error_code, vendor_id);
-			}
-			break;
-		}
-		case PB_MSG_LANGUAGE_PREFERENCE:
-		{
-			pb_language_preference_msg_t *lang_msg;
-			chunk_t lang;
-
-			lang_msg = (pb_language_preference_msg_t*)msg;
-			lang = lang_msg->get_language_preference(lang_msg);
-
-			if (this->recs)
-			{
-				DBG2(DBG_TNC, "setting language preference to '%.*s'",
-					 (int)lang.len, lang.ptr);
-				this->recs->set_preferred_language(this->recs, lang);
-			}
-			break;
-		}
-		case PB_MSG_REASON_STRING:
-		{
-			pb_reason_string_msg_t *reason_msg;
-			chunk_t reason_string, language_code;
-
-			reason_msg = (pb_reason_string_msg_t*)msg;
-			reason_string = reason_msg->get_reason_string(reason_msg);
-			language_code = reason_msg->get_language_code(reason_msg);
-			DBG1(DBG_TNC, "reason string is '%.*s' [%.*s]",
-				 (int)reason_string.len, reason_string.ptr,
-				 (int)language_code.len, language_code.ptr);
-			break;
-		}
-		default:
-			break;
-	}
-}
-
-/**
- *  Build a CRETRY or SRETRY batch
- */
-static void build_retry_batch(private_tnccs_20_t *this)
-{
-	pb_tnc_batch_type_t batch_retry_type;
-
-	batch_retry_type = this->is_server ? PB_BATCH_SRETRY : PB_BATCH_CRETRY;
-	if (this->batch_type == batch_retry_type)
-	{
-		/* retry batch has already been selected */
-		return;
-	}
-
-	change_batch_type(this, batch_retry_type);
-
-	if (this->is_server)
-	{
-		this->recs->clear_recommendation(this->recs);
-		tnc->imvs->notify_connection_change(tnc->imvs, this->connection_id,
-											TNC_CONNECTION_STATE_HANDSHAKE);
-	}
-}
-
-METHOD(tls_t, process, status_t,
-	private_tnccs_20_t *this, void *buf, size_t buflen)
-{
-	chunk_t data;
-	pb_tnc_batch_t *batch;
-	pb_tnc_msg_t *msg;
-	enumerator_t *enumerator;
-	status_t status;
-
-	if (this->is_server && !this->connection_id)
-	{
-		this->connection_id = tnc->tnccs->create_connection(tnc->tnccs,
-									TNCCS_2_0, (tnccs_t*)this, _send_msg,
-									&this->request_handshake_retry,
-									this->max_msg_len, &this->recs);
-		if (!this->connection_id)
-		{
-			return FAILED;
-		}
-		tnc->imvs->notify_connection_change(tnc->imvs, this->connection_id,
-											TNC_CONNECTION_STATE_CREATE);
-		tnc->imvs->notify_connection_change(tnc->imvs, this->connection_id,
-											TNC_CONNECTION_STATE_HANDSHAKE);
-	}
-
-	data = chunk_create(buf, buflen);
-	DBG1(DBG_TNC, "received TNCCS batch (%u bytes) for Connection ID %u",
-				   data.len, this->connection_id);
-	DBG3(DBG_TNC, "%B", &data);
-	batch = pb_tnc_batch_create_from_data(this->is_server, data);
-	status = batch->process(batch, this->state_machine);
-
-	if (status != FAILED)
-	{
-		enumerator_t *enumerator;
-		pb_tnc_msg_t *msg;
-		pb_tnc_batch_type_t batch_type;
-		bool empty = TRUE;
-
-		batch_type = batch->get_type(batch);
-
-		if (batch_type == PB_BATCH_CRETRY)
-		{
-			/* Send an SRETRY batch in response */
-			this->mutex->lock(this->mutex);
-			build_retry_batch(this);
-			this->mutex->unlock(this->mutex);
-		}
-		else if (batch_type == PB_BATCH_SRETRY)
-		{
-			/* Restart the measurements */
-			tnc->imcs->notify_connection_change(tnc->imcs,
-			this->connection_id, TNC_CONNECTION_STATE_HANDSHAKE);
-			this->send_msg = TRUE;
-			tnc->imcs->begin_handshake(tnc->imcs, this->connection_id);
-			this->send_msg = FALSE;
-		}
-
-		enumerator = batch->create_msg_enumerator(batch);
-		while (enumerator->enumerate(enumerator, &msg))
-		{
-			handle_message(this, msg);
-			empty = FALSE;
-		}
-		enumerator->destroy(enumerator);
-
-		/* received an empty CLOSE batch from PB-TNC client */
-		if (this->is_server && batch_type == PB_BATCH_CLOSE && empty)
-		{
-			batch->destroy(batch);
-			if (this->fatal_error)
-			{
-				DBG1(DBG_TNC, "a fatal PB-TNC error occurred, "
-							  "terminating connection");
-				return FAILED;
-			}
-			else
-			{
-				return SUCCESS;
-			}
-		}
-
-		this->send_msg = TRUE;
-		if (this->is_server)
-		{
-			tnc->imvs->batch_ending(tnc->imvs, this->connection_id);
-		}
-		else
-		{
-			tnc->imcs->batch_ending(tnc->imcs, this->connection_id);
-		}
-		this->send_msg = FALSE;
-	}
-
-	switch (status)
-	{
-		case FAILED:
-			this->fatal_error = TRUE;
-			this->mutex->lock(this->mutex);
-			change_batch_type(this, PB_BATCH_CLOSE);
-			this->mutex->unlock(this->mutex);
-			/* fall through to add error messages to outbound batch */
-		case VERIFY_ERROR:
-			enumerator = batch->create_error_enumerator(batch);
-			while (enumerator->enumerate(enumerator, &msg))
-			{
-				this->mutex->lock(this->mutex);
-				this->messages->insert_last(this->messages, msg->get_ref(msg));
-				this->mutex->unlock(this->mutex);
-			}
-			enumerator->destroy(enumerator);
-			break;
-		case SUCCESS:
-		default:
-			break;
-	}
-	batch->destroy(batch);
-
-	return NEED_MORE;
-}
-
-/**
- *  Build a RESULT batch if a final recommendation is available
- */
-static void check_and_build_recommendation(private_tnccs_20_t *this)
-{
-	TNC_IMV_Action_Recommendation rec;
-	TNC_IMV_Evaluation_Result eval;
-	TNC_ConnectionState state;
-	TNC_IMVID id;
-	chunk_t reason, language;
-	enumerator_t *enumerator;
-	pb_tnc_msg_t *msg;
-	pb_access_recommendation_code_t pb_rec;
-
-	if (!this->recs->have_recommendation(this->recs, &rec, &eval))
-	{
-		tnc->imvs->solicit_recommendation(tnc->imvs, this->connection_id);
-	}
-	if (this->recs->have_recommendation(this->recs, &rec, &eval))
-	{
-		this->batch_type = PB_BATCH_RESULT;
-
-		msg = pb_assessment_result_msg_create(eval);
-		this->messages->insert_last(this->messages, msg);
-
-		/**
-		 * Map IMV Action Recommendation codes to PB Access Recommendation codes
-		 * and communicate Access Recommendation to IMVs
-		 */
-		switch (rec)
-		{
-			case TNC_IMV_ACTION_RECOMMENDATION_ALLOW:
-				state = TNC_CONNECTION_STATE_ACCESS_ALLOWED;
-				pb_rec = PB_REC_ACCESS_ALLOWED;
-				break;
-			case TNC_IMV_ACTION_RECOMMENDATION_ISOLATE:
-				state = TNC_CONNECTION_STATE_ACCESS_ISOLATED;
-				pb_rec = PB_REC_QUARANTINED;
-				break;
-			case TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS:
-			case TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION:
-			default:
-				state = TNC_CONNECTION_STATE_ACCESS_NONE;
-				pb_rec = PB_REC_ACCESS_DENIED;
-		}
-		tnc->imvs->notify_connection_change(tnc->imvs, this->connection_id,
-											state);
-
-		msg = pb_access_recommendation_msg_create(pb_rec);
-		this->messages->insert_last(this->messages, msg);
-
-		enumerator = this->recs->create_reason_enumerator(this->recs);
-		while (enumerator->enumerate(enumerator, &id, &reason, &language))
-		{
-			msg = pb_reason_string_msg_create(reason, language);
-			this->messages->insert_last(this->messages, msg);
-		}
-		enumerator->destroy(enumerator);
-	}
-}
-
-METHOD(tls_t, build, status_t,
-	private_tnccs_20_t *this, void *buf, size_t *buflen, size_t *msglen)
-{
-	status_t status;
-	pb_tnc_state_t state;
-
-	/* Initialize the connection */
-	if (!this->is_server && !this->connection_id)
-	{
-		pb_tnc_msg_t *msg;
-		char *pref_lang;
-
-		this->connection_id = tnc->tnccs->create_connection(tnc->tnccs,
-										TNCCS_2_0, (tnccs_t*)this, _send_msg,
-										&this->request_handshake_retry,
-										this->max_msg_len, NULL);
-		if (!this->connection_id)
-		{
-			return FAILED;
-		}
-
-		/* Create PB-TNC Language Preference message */
-		pref_lang = tnc->imcs->get_preferred_language(tnc->imcs);
-		msg = pb_language_preference_msg_create(chunk_create(pref_lang,
-													strlen(pref_lang)));
-		this->mutex->lock(this->mutex);
-		this->batch_type = PB_BATCH_CDATA;
-		this->messages->insert_last(this->messages, msg);
-		this->mutex->unlock(this->mutex);
-
-		tnc->imcs->notify_connection_change(tnc->imcs, this->connection_id,
-											TNC_CONNECTION_STATE_CREATE);
-		tnc->imcs->notify_connection_change(tnc->imcs, this->connection_id,
-											TNC_CONNECTION_STATE_HANDSHAKE);
-		this->send_msg = TRUE;
-		tnc->imcs->begin_handshake(tnc->imcs, this->connection_id);
-		this->send_msg = FALSE;
-	}
-
-	state = this->state_machine->get_state(this->state_machine);
-
-	if (this->fatal_error && state == PB_STATE_END)
-	{
-		DBG1(DBG_TNC, "a fatal PB-TNC error occurred, terminating connection");
-		return FAILED;
-	}
-
-	/* Do not allow any asynchronous IMCs or IMVs to add additional messages */
-	this->mutex->lock(this->mutex);
-
-	if (this->request_handshake_retry)
-	{
-		if (state != PB_STATE_INIT)
-		{
-			build_retry_batch(this);
-		}
-
-		/* Reset the flag for the next handshake retry request */
-		this->request_handshake_retry = FALSE;
-	}
-
-	if (this->is_server &&  state == PB_STATE_SERVER_WORKING &&
-		this->recs->have_recommendation(this->recs, NULL, NULL))
-	{
-		check_and_build_recommendation(this);
-	}
-
-	if (this->batch_type == PB_BATCH_NONE)
-	{
-		if (this->is_server)
-		{
-			if (state == PB_STATE_SERVER_WORKING)
-			{
-				if (this->state_machine->get_empty_cdata(this->state_machine))
-				{
-					check_and_build_recommendation(this);
-				}
-				else
-				{
-					DBG2(DBG_TNC, "no recommendation available yet, "
-								  "sending empty PB-TNC SDATA batch");
-					this->batch_type = PB_BATCH_SDATA;
-				}
-			}
-		}
-		else
-		{
-			switch (state)
-			{
-				case PB_STATE_CLIENT_WORKING:
-					DBG2(DBG_TNC, "no client data to send, "
-								  "sending empty PB-TNC CDATA batch");
-					this->batch_type = PB_BATCH_CDATA;
-					break;
-				case PB_STATE_DECIDED:
-					/**
-					 * In the DECIDED state and if no CRETRY is under way,
-					 * a PB-TNC client replies with an empty CLOSE batch.
-					 */
-					this->batch_type = PB_BATCH_CLOSE;
-					break;
-				default:
-					break;
-			}
-		}
-	}
-
-	if (this->batch_type != PB_BATCH_NONE)
-	{
-		pb_tnc_batch_t *batch;
-		pb_tnc_msg_t *msg;
-		chunk_t data;
-		int msg_count;
-		enumerator_t *enumerator;
-
-		if (this->state_machine->send_batch(this->state_machine, this->batch_type))
-		{
-			batch = pb_tnc_batch_create(this->is_server, this->batch_type,
-										min(this->max_batch_len, *buflen));
-
-			enumerator = this->messages->create_enumerator(this->messages);
-			while (enumerator->enumerate(enumerator, &msg))
-			{
-				if (batch->add_msg(batch, msg))
-				{
-					this->messages->remove_at(this->messages, enumerator);
-				}
-				else
-				{
-					break;
-				}
-			}
-			enumerator->destroy(enumerator);
-
-			batch->build(batch);
-			data = batch->get_encoding(batch);
-			DBG1(DBG_TNC, "sending PB-TNC %N batch (%d bytes) for Connection ID %u",
-						   pb_tnc_batch_type_names, this->batch_type, data.len,
-						   this->connection_id);
-			DBG3(DBG_TNC, "%B", &data);
-
-			*buflen = data.len;
-			*msglen = 0;
-			memcpy(buf, data.ptr, *buflen);
-			batch->destroy(batch);
-
-			msg_count = this->messages->get_count(this->messages);
-			if (msg_count)
-			{
-				DBG2(DBG_TNC, "queued %d PB-TNC message%s for next %N batch",
-					 msg_count, (msg_count == 1) ? "" : "s",
-					 pb_tnc_batch_type_names, this->batch_type);
-			}
-			else
-			{
-				this->batch_type = PB_BATCH_NONE;
-			}
-
-			status = ALREADY_DONE;
-		}
-		else
-		{
-			change_batch_type(this, PB_BATCH_NONE);
-			status = INVALID_STATE;
-		}
-	}
-	else
-	{
-		DBG1(DBG_TNC, "no PB-TNC batch to send");
-		status = INVALID_STATE;
-	}
-	this->mutex->unlock(this->mutex);
-
-	return status;
-}
-
-METHOD(tls_t, is_server, bool,
-	private_tnccs_20_t *this)
-{
-	return this->is_server;
-}
-
-METHOD(tls_t, get_server_id, identification_t*,
-	private_tnccs_20_t *this)
-{
-	return this->server;
-}
-
-METHOD(tls_t, get_peer_id, identification_t*,
-	private_tnccs_20_t *this)
-{
-	return this->peer;
-}
-
-METHOD(tls_t, get_purpose, tls_purpose_t,
-	private_tnccs_20_t *this)
-{
-	return TLS_PURPOSE_EAP_TNC;
-}
-
-METHOD(tls_t, is_complete, bool,
-	private_tnccs_20_t *this)
-{
-	TNC_IMV_Action_Recommendation rec;
-	TNC_IMV_Evaluation_Result eval;
-
-	if (this->recs && this->recs->have_recommendation(this->recs, &rec, &eval))
-	{
-		return tnc->imvs->enforce_recommendation(tnc->imvs, rec, eval);
-	}
-	else
-	{
-		return FALSE;
-	}
-}
-
-METHOD(tls_t, get_eap_msk, chunk_t,
-	private_tnccs_20_t *this)
-{
-	return chunk_empty;
-}
-
-METHOD(tls_t, destroy, void,
-	private_tnccs_20_t *this)
-{
-	tnc->tnccs->remove_connection(tnc->tnccs, this->connection_id,
-											  this->is_server);
-	this->server->destroy(this->server);
-	this->peer->destroy(this->peer);
-	this->state_machine->destroy(this->state_machine);
-	this->mutex->destroy(this->mutex);
-	this->messages->destroy_offset(this->messages,
-								   offsetof(pb_tnc_msg_t, destroy));
-	free(this);
-}
-
-METHOD(tnccs_t, get_transport, tnc_ift_type_t,
-	private_tnccs_20_t *this)
-{
-	return this->transport;
-}
-
-METHOD(tnccs_t, set_transport, void,
-	private_tnccs_20_t *this, tnc_ift_type_t transport)
-{
-	this->transport = transport;
-}
-
-METHOD(tnccs_t, get_auth_type, u_int32_t,
-	private_tnccs_20_t *this)
-{
-	return this->auth_type;
-}
-
-METHOD(tnccs_t, set_auth_type, void,
-	private_tnccs_20_t *this, u_int32_t auth_type)
-{
-	this->auth_type = auth_type;
-}
-
-/**
- * See header
- */
-tnccs_t* tnccs_20_create(bool is_server,
-						 identification_t *server,
-						 identification_t *peer,
-						 tnc_ift_type_t transport)
-{
-	private_tnccs_20_t *this;
-
-	INIT(this,
-		.public = {
-			.tls = {
-				.process = _process,
-				.build = _build,
-				.is_server = _is_server,
-				.get_server_id = _get_server_id,
-				.get_peer_id = _get_peer_id,
-				.get_purpose = _get_purpose,
-				.is_complete = _is_complete,
-				.get_eap_msk = _get_eap_msk,
-				.destroy = _destroy,
-			},
-			.get_transport = _get_transport,
-			.set_transport = _set_transport,
-			.get_auth_type = _get_auth_type,
-			.set_auth_type = _set_auth_type,
-		},
-		.is_server = is_server,
-		.server = server->clone(server),
-		.peer = peer->clone(peer),
-		.transport = transport,
-		.state_machine = pb_tnc_state_machine_create(is_server),
-		.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
-		.messages = linked_list_create(),
-		.max_batch_len = lib->settings->get_int(lib->settings,
-								"%s.plugins.tnccs-20.max_batch_size", 65522,
-								charon->name),
-		.max_msg_len = lib->settings->get_int(lib->settings,
-								"%s.plugins.tnccs-20.max_message_size", 65490,
-								charon->name),
-	);
-
-	return &this->public;
-}