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/*
* Copyright (C) 2012 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 imv_msg_t imv_msg
* @{ @ingroup libimcv_imv
*/
#ifndef IMV_MSG_H_
#define IMV_MSG_H_
#include <imv/imv_agent.h>
typedef struct imv_msg_t imv_msg_t;
#include <library.h>
/**
* Interface for a PA-TNC message handled by an IMV.
*
*/
struct imv_msg_t {
/**
* Get source ID of PA-TNC message
*
* @return src ID
*/
TNC_UInt32 (*get_src_id)(imv_msg_t *this);
/**
* Get destination ID of PA-TNC message
*
* @return destination ID
*/
TNC_UInt32 (*get_dst_id)(imv_msg_t *this);
/**
* Set the type of a PA-TNC message
*
* @param msg_type message type
*/
void (*set_msg_type)(imv_msg_t *this, pen_type_t msg_type);
/**
* Get the type of a PA-TNC message.
*
* @return message type
*/
pen_type_t (*get_msg_type)(imv_msg_t *this);
/**
* Sends one or multiple PA-TNC messages
*
* @param excl set the excl message flag if supported
* @return TNC result code
*/
TNC_Result (*send)(imv_msg_t *this, bool excl);
/**
* Send a PA-TNC message containing an IETF Assessment Result attribute
*
* @return TNC result code
*/
TNC_Result (*send_assessment)(imv_msg_t *this);
/**
* Processes a received PA-TNC message
*
* @param fatal_error TRUE if IMC sent a fatal error message
* @return TNC result code
*/
TNC_Result (*receive)(imv_msg_t *this, bool *fatal_error);
/**
* Add a PA-TNC attribute to the send queue
*
* @param attr PA-TNC attribute to be added
*/
void (*add_attribute)(imv_msg_t *this, pa_tnc_attr_t *attr);
/**
* Get the number of PA-TNC attributes in the send queue
*
* @return number of PA-TNC attribute in send queue
*/
int (*get_attribute_count)(imv_msg_t *this);
/**
* Enumerator over PA-TNC attributes contained in the PA-TNC message
*
* @return PA-TNC attribute enumerator
*/
enumerator_t* (*create_attribute_enumerator)(imv_msg_t *this);
/**
* Get the full encoding of an IMV message.
*
* @return message encoding, internal data
*/
chunk_t (*get_encoding)(imv_msg_t *this);
/**
* Destroys a imv_msg_t object.
*/
void (*destroy)(imv_msg_t *this);
};
/**
* Create a wrapper for an outbound message
*
* @param agent IMV agent responsible for the message
* @param state IMV state for the given connection ID
* @param connection_id connection ID
* @param src_id source IMV ID
* @param dst_id destination IMC ID
* @param msg_type PA-TNC message type
*/
imv_msg_t* imv_msg_create(imv_agent_t *agent, imv_state_t *state,
TNC_ConnectionID connection_id,
TNC_UInt32 src_id, TNC_UInt32 dst_id,
pen_type_t msg_type);
/**
* Create a wrapper for an outbound message based on a received message
*
* @param msg received message the reply is based on
*/
imv_msg_t* imv_msg_create_as_reply(imv_msg_t *msg);
/**
* Create a wrapper around message data received via the legacy IF-IMV interface
*
* @param agent IMV agent responsible for the message
* @param state IMV state for the given connection ID
* @param connection_id connection ID
* @param msg_type PA-TNC message type
* @param msg received PA-TNC message blob
*/
imv_msg_t* imv_msg_create_from_data(imv_agent_t *agent, imv_state_t *state,
TNC_ConnectionID connection_id,
TNC_MessageType msg_type,
chunk_t msg);
/**
* Create a wrapper around message data received via the long IF-IMV interface
*
* @param agent IMV agent responsible for the message
* @param state IMV state for the given connection ID
* @param connection_id connection ID
* @param src_id source IMC ID
* @param dst_id destination IMV ID
* @param msg_vid PA-TNC message vendor ID
* @param msg_subtype PA-TNC subtype
* @param msg received PA-TNC message blob
*/
imv_msg_t* imv_msg_create_from_long_data(imv_agent_t *agent, imv_state_t *state,
TNC_ConnectionID connection_id,
TNC_UInt32 src_id, TNC_UInt32 dst_id,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
chunk_t msg);
#endif /** IMV_MSG_H_ @}*/
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