2011-05-30 19:30:09 +00:00
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/*
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* Copyright (C) 2011 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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*
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* @defgroup imc_agent_t imc_agent
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* @{ @ingroup imc_agent
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*/
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#ifndef IMC_AGENT_H_
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#define IMC_AGENT_H_
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#include "imc_state.h"
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2011-06-05 21:24:48 +00:00
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#include "pa_tnc/pa_tnc_msg.h"
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2011-05-30 19:30:09 +00:00
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2011-06-01 14:32:01 +00:00
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#include <tncifimc.h>
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#include <pen/pen.h>
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2012-07-11 21:34:51 +00:00
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#include <utils/linked_list.h>
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2011-06-01 14:32:01 +00:00
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2011-05-30 19:30:09 +00:00
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#include <library.h>
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typedef struct imc_agent_t imc_agent_t;
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/**
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* Core functions of an Integrity Measurement Verifier (IMC)
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*/
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struct imc_agent_t {
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/**
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* Ask a TNCC to retry an Integrity Check Handshake
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*
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* @param imc_id IMC ID assigned by TNCC
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* @param connection_id network connection ID assigned by TNCC
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* @param reason IMC retry reason
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* @return TNC result code
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*/
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TNC_Result (*request_handshake_retry)(TNC_IMCID imc_id,
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TNC_ConnectionID connection_id,
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TNC_RetryReason reason);
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/**
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* Bind TNCC functions
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*
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* @param bind_function function offered by the TNCC
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* @return TNC result code
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*/
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TNC_Result (*bind_functions)(imc_agent_t *this,
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TNC_TNCC_BindFunctionPointer bind_function);
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/**
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* Create the IMC state for a TNCCS connection instance
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*
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* @param state internal IMC state instance
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* @return TNC result code
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*/
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TNC_Result (*create_state)(imc_agent_t *this, imc_state_t *state);
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/**
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* Delete the IMC state for a TNCCS connection instance
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*
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* @param connection_id network connection ID assigned by TNCS
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* @return TNC result code
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*/
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TNC_Result (*delete_state)(imc_agent_t *this,
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TNC_ConnectionID connection_id);
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/**
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* Change the current state of a TNCCS connection
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*
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* @param connection_id network connection ID assigned by TNCS
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* @param new_state new state of TNCCS connection
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2011-06-23 17:52:30 +00:00
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* @param state_p internal IMC state instance [optional argument]
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2011-05-30 19:30:09 +00:00
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* @return TNC result code
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*/
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TNC_Result (*change_state)(imc_agent_t *this,
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TNC_ConnectionID connection_id,
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2011-06-23 17:52:30 +00:00
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TNC_ConnectionState new_state,
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imc_state_t **state_p);
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2011-05-30 19:30:09 +00:00
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/**
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* Get the IMC state for a TNCCS connection instance
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*
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* @param connection_id network connection ID assigned by TNCS
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* @param state internal IMC state instance
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* @return TRUE if the state was found
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*/
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bool (*get_state)(imc_agent_t *this,
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TNC_ConnectionID connection_id, imc_state_t **state);
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/**
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2011-06-05 21:24:48 +00:00
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* Call when an PA-TNC message is to be sent
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2011-05-30 19:30:09 +00:00
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*
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* @param connection_id network connection ID assigned by TNCC
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2011-12-09 16:11:31 +00:00
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* @param excl exclusive flag
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* @param src_imc_id IMC ID to be set as source
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* @param dst_imv_id IMV ID to be set as destination
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2012-07-11 21:34:51 +00:00
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* @param attr_list list of PA-TNC attributes to send
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2011-05-30 19:30:09 +00:00
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* @return TNC result code
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*/
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TNC_Result (*send_message)(imc_agent_t *this,
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2011-12-09 16:11:31 +00:00
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TNC_ConnectionID connection_id, bool excl,
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TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id,
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2012-07-11 21:34:51 +00:00
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linked_list_t *attr_list);
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2011-05-30 19:30:09 +00:00
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2011-06-05 21:24:48 +00:00
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/**
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* Call when a PA-TNC message was received
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*
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2011-12-09 22:32:30 +00:00
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* @param state state for current connection
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2011-06-05 21:24:48 +00:00
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* @param msg received unparsed message
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2011-12-09 22:32:30 +00:00
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* @param msg_vid message vendorID of the received message
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* @param msg_subtype message subtype of the received message
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* @param src_imv_id source IMV ID
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* @param dst_imc_id destination IMC ID
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2011-06-05 21:24:48 +00:00
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* @param pa_tnc_message parsed PA-TNC message or NULL if an error occurred
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* @return TNC result code
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*/
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TNC_Result (*receive_message)(imc_agent_t *this,
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2011-12-09 22:32:30 +00:00
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imc_state_t *state, chunk_t msg,
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TNC_VendorID msg_vid,
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TNC_MessageSubtype msg_subtype,
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TNC_UInt32 src_imv_id,
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TNC_UInt32 dst_imc_id,
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2011-06-05 21:24:48 +00:00
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pa_tnc_msg_t **pa_tnc_msg);
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2011-12-09 16:11:31 +00:00
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/**
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2011-12-16 16:32:00 +00:00
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* Reserve additional IMC IDs from TNCC
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2011-12-09 16:11:31 +00:00
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*
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2011-12-16 16:32:00 +00:00
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* @param count number of additional IMC IDs to be assigned
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2011-12-09 16:11:31 +00:00
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* @return TNC result code
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*/
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2011-12-16 16:32:00 +00:00
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TNC_Result (*reserve_additional_ids)(imc_agent_t *this, int count);
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/**
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* Return the number of additional IMC IDs assigned by the TNCC
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*
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* @return number of additional IMC IDs
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*/
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int (*count_additional_ids)(imc_agent_t *this);
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/**
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* Create an enumerator for the additional IMC IDs
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*/
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enumerator_t* (*create_id_enumerator)(imc_agent_t *this);
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2011-12-09 16:11:31 +00:00
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2011-05-30 19:30:09 +00:00
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/**
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* Destroys an imc_agent_t object
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*/
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void (*destroy)(imc_agent_t *this);
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};
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/**
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* Create an imc_agent_t object
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*
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* @param name name of the IMC
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* @param vendor_id vendor ID of the IMC
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* @param subtype message subtype of the IMC
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* @param id ID of the IMC as assigned by the TNCS
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* @param actual_version actual version of the IF-IMC API
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*
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*/
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imc_agent_t *imc_agent_create(const char *name,
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pen_t vendor_id, u_int32_t subtype,
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TNC_IMCID id, TNC_Version *actual_version);
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#endif /** IMC_AGENT_H_ @}*/
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