denozord/strongswan-ext
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

refactored PA-TNC message handling by IMCs

Browse Source
This commit is contained in:
Andreas Steffen
2012-10-17 10:02:53 +02:00
parent 154cae09e3
commit f8a70254a9
15 changed files with 898 additions and 606 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libimcv/imc/imc_agent.c
+12 -202
View File
@@ -94,45 +94,6 @@ struct private_imc_agent_t {
TNC_MessageSubtypeList supported_subtypes,
TNC_UInt32 type_count);
/**
* Call when an IMC-IMC message is to be sent
*
* @param imc_id IMC ID assigned by TNCC
* @param connection_id network connection ID assigned by TNCC
* @param msg message to send
* @param msg_len message length in bytes
* @param msg_type message type
* @return TNC result code
*/
TNC_Result (*send_message)(TNC_IMCID imc_id,
TNC_ConnectionID connection_id,
TNC_BufferReference msg,
TNC_UInt32 msg_len,
TNC_MessageType msg_type);
/**
* Call when an IMC-IMC message is to be sent with long message types
*
* @param imc_id IMC ID assigned by TNCC
* @param connection_id network connection ID assigned by TNCC
* @param msg_flags message flags
* @param msg message to send
* @param msg_len message length in bytes
* @param msg_vid message vendor ID
* @param msg_subtype message subtype
* @param dst_imc_id destination IMV ID
* @return TNC result code
*/
TNC_Result (*send_message_long)(TNC_IMCID imc_id,
TNC_ConnectionID connection_id,
TNC_UInt32 msg_flags,
TNC_BufferReference msg,
TNC_UInt32 msg_len,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
TNC_UInt32 dst_imv_id);
/**
* Get the value of an attribute associated with a connection
* or with the TNCC as a whole.
@@ -205,14 +166,14 @@ METHOD(imc_agent_t, bind_functions, TNC_Result,
this->public.request_handshake_retry = NULL;
}
if (bind_function(this->id, "TNC_TNCC_SendMessage",
(void**)&this->send_message) != TNC_RESULT_SUCCESS)
(void**)&this->public.send_message) != TNC_RESULT_SUCCESS)
{
this->send_message = NULL;
this->public.send_message = NULL;
}
if (bind_function(this->id, "TNC_TNCC_SendMessageLong",
(void**)&this->send_message_long) != TNC_RESULT_SUCCESS)
(void**)&this->public.send_message_long) != TNC_RESULT_SUCCESS)
{
this->send_message_long = NULL;
this->public.send_message_long = NULL;
}
if (bind_function(this->id, "TNC_TNCC_GetAttribute",
(void**)&this->get_attribute) != TNC_RESULT_SUCCESS)
@@ -494,167 +455,16 @@ METHOD(imc_agent_t, get_state, bool,
return TRUE;
}
METHOD(imc_agent_t, send_message, TNC_Result,
private_imc_agent_t *this, TNC_ConnectionID connection_id, bool excl,
TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id, TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype, linked_list_t *attr_list)
METHOD(imc_agent_t, get_name, const char*,
private_imc_agent_t *this)
{
TNC_MessageType type;
TNC_UInt32 msg_flags;
TNC_Result result = TNC_RESULT_FATAL;
imc_state_t *state;
pa_tnc_attr_t *attr;
pa_tnc_msg_t *pa_tnc_msg;
chunk_t msg;
enumerator_t *enumerator;
bool attr_added;
state = find_connection(this, connection_id);
if (!state)
{
DBG1(DBG_IMV, "IMC %u \"%s\" has no state for Connection ID %u",
this->id, this->name, connection_id);
return TNC_RESULT_FATAL;
}
while (attr_list->get_count(attr_list))
{
pa_tnc_msg = pa_tnc_msg_create(state->get_max_msg_len(state));
attr_added = FALSE;
enumerator = attr_list->create_enumerator(attr_list);
while (enumerator->enumerate(enumerator, &attr))
{
if (pa_tnc_msg->add_attribute(pa_tnc_msg, attr))
{
attr_added = TRUE;
}
else
{
if (attr_added)
{
break;
}
else
{
DBG1(DBG_IMC, "PA-TNC attribute too large to send, deleted");
attr->destroy(attr);
}
}
attr_list->remove_at(attr_list, enumerator);
}
enumerator->destroy(enumerator);
/* build and send the PA-TNC message via the IF-IMC interface */
if (!pa_tnc_msg->build(pa_tnc_msg))
{
pa_tnc_msg->destroy(pa_tnc_msg);
return TNC_RESULT_FATAL;
}
msg = pa_tnc_msg->get_encoding(pa_tnc_msg);
if (state->has_long(state) && this->send_message_long)
{
if (!src_imc_id)
{
src_imc_id = this->id;
}
msg_flags = excl ? TNC_MESSAGE_FLAGS_EXCLUSIVE : 0;
result = this->send_message_long(src_imc_id, connection_id,
msg_flags, msg.ptr, msg.len, msg_vid,
msg_subtype, dst_imv_id);
}
else if (this->send_message)
{
type = msg_vid << 8 | msg_subtype;
result = this->send_message(this->id, connection_id, msg.ptr,
msg.len, type);
}
pa_tnc_msg->destroy(pa_tnc_msg);
if (result != TNC_RESULT_SUCCESS)
{
break;
}
}
return result;
return this->name;
}
METHOD(imc_agent_t, receive_message, TNC_Result,
private_imc_agent_t *this, imc_state_t *state, chunk_t msg,
TNC_VendorID msg_vid, TNC_MessageSubtype msg_subtype,
TNC_UInt32 src_imv_id, TNC_UInt32 dst_imc_id, pa_tnc_msg_t **pa_tnc_msg)
METHOD(imc_agent_t, get_id, TNC_IMCID,
private_imc_agent_t *this)
{
pa_tnc_msg_t *pa_msg;
pa_tnc_attr_t *error_attr;
linked_list_t *error_attr_list;
enumerator_t *enumerator;
TNC_UInt32 src_imc_id, dst_imv_id;
TNC_ConnectionID connection_id;
TNC_Result result;
connection_id = state->get_connection_id(state);
if (state->has_long(state))
{
if (dst_imc_id != TNC_IMCID_ANY)
{
DBG2(DBG_IMC, "IMC %u \"%s\" received message for Connection ID %u "
"from IMV %u to IMC %u", this->id, this->name,
connection_id, src_imv_id, dst_imc_id);
}
else
{
DBG2(DBG_IMC, "IMC %u \"%s\" received message for Connection ID %u "
"from IMV %u", this->id, this->name, connection_id,
src_imv_id);
}
}
else
{
DBG2(DBG_IMC, "IMC %u \"%s\" received message for Connection ID %u",
this->id, this->name, connection_id);
}
*pa_tnc_msg = NULL;
pa_msg = pa_tnc_msg_create_from_data(msg);
switch (pa_msg->process(pa_msg))
{
case SUCCESS:
*pa_tnc_msg = pa_msg;
break;
case VERIFY_ERROR:
/* extract and copy by refence all error attributes */
error_attr_list = linked_list_create();
enumerator = pa_msg->create_error_enumerator(pa_msg);
while (enumerator->enumerate(enumerator, &error_attr))
{
error_attr_list->insert_last(error_attr_list,
error_attr->get_ref(error_attr));
}
enumerator->destroy(enumerator);
src_imc_id = (dst_imc_id == TNC_IMCID_ANY) ? this->id : dst_imc_id;
dst_imv_id = state->has_excl(state) ? src_imv_id : TNC_IMVID_ANY;
result = send_message(this, connection_id, state->has_excl(state),
src_imc_id, dst_imv_id, msg_vid, msg_subtype,
error_attr_list);
error_attr_list->destroy(error_attr_list);
pa_msg->destroy(pa_msg);
return result;
case FAILED:
default:
pa_msg->destroy(pa_msg);
return TNC_RESULT_FATAL;
}
return TNC_RESULT_SUCCESS;
return this->id;
}
METHOD(imc_agent_t, reserve_additional_ids, TNC_Result,
@@ -737,8 +547,8 @@ imc_agent_t *imc_agent_create(const char *name,
.delete_state = _delete_state,
.change_state = _change_state,
.get_state = _get_state,
.send_message = _send_message,
.receive_message = _receive_message,
.get_name = _get_name,
.get_id = _get_id,
.reserve_additional_ids = _reserve_additional_ids,
.count_additional_ids = _count_additional_ids,
.create_id_enumerator = _create_id_enumerator,
src/libimcv/imc/imc_agent.h
+44 -31
View File
@@ -50,6 +50,44 @@ struct imc_agent_t {
TNC_ConnectionID connection_id,
TNC_RetryReason reason);
/**
* Call when an IMC-IMC message is to be sent
*
* @param imc_id IMC ID assigned by TNCC
* @param connection_id network connection ID assigned by TNCC
* @param msg message to send
* @param msg_len message length in bytes
* @param msg_type message type
* @return TNC result code
*/
TNC_Result (*send_message)(TNC_IMCID imc_id,
TNC_ConnectionID connection_id,
TNC_BufferReference msg,
TNC_UInt32 msg_len,
TNC_MessageType msg_type);
/**
* Call when an IMC-IMC message is to be sent with long message types
*
* @param imc_id IMC ID assigned by TNCC
* @param connection_id network connection ID assigned by TNCC
* @param msg_flags message flags
* @param msg message to send
* @param msg_len message length in bytes
* @param msg_vid message vendor ID
* @param msg_subtype message subtype
* @param dst_imc_id destination IMV ID
* @return TNC result code
*/
TNC_Result (*send_message_long)(TNC_IMCID imc_id,
TNC_ConnectionID connection_id,
TNC_UInt32 msg_flags,
TNC_BufferReference msg,
TNC_UInt32 msg_len,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
TNC_UInt32 dst_imv_id);
/**
* Bind TNCC functions
*
@@ -100,43 +138,18 @@ struct imc_agent_t {
TNC_ConnectionID connection_id, imc_state_t **state);
/**
* Call when an PA-TNC message is to be sent
* Get IMC name
*
* @param connection_id network connection ID assigned by TNCC
* @param excl exclusive flag
* @param src_imc_id IMC ID to be set as source
* @param dst_imv_id IMV ID to be set as destination
* @param msg_vid message vendor ID
* @param msg_subtype message subtype
* @param attr_list list of PA-TNC attributes to send
* @return TNC result code
* return IMC name
*/
TNC_Result (*send_message)(imc_agent_t *this,
TNC_ConnectionID connection_id, bool excl,
TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
linked_list_t *attr_list);
const char* (*get_name)(imc_agent_t *this);
/**
* Call when a PA-TNC message was received
* Get base IMC ID
*
* @param state state for current connection
* @param msg received unparsed message
* @param msg_vid message vendorID of the received message
* @param msg_subtype message subtype of the received message
* @param src_imv_id source IMV ID
* @param dst_imc_id destination IMC ID
* @param pa_tnc_message parsed PA-TNC message or NULL if an error occurred
* @return TNC result code
* return base IMC ID
*/
TNC_Result (*receive_message)(imc_agent_t *this,
imc_state_t *state, chunk_t msg,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
TNC_UInt32 src_imv_id,
TNC_UInt32 dst_imc_id,
pa_tnc_msg_t **pa_tnc_msg);
TNC_IMCID (*get_id)(imc_agent_t *this);
/**
* Reserve additional IMC IDs from TNCC
src/libimcv/imc/imc_msg.c
+392
View File
@@ -0,0 +1,392 @@
/*
* 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.
*/
#include "imc_msg.h"
#include "ietf/ietf_attr.h"
#include "ietf/ietf_attr_assess_result.h"
#include <tncif_names.h>
#include <pen/pen.h>
#include <utils/linked_list.h>
#include <debug.h>
typedef struct private_imc_msg_t private_imc_msg_t;
/**
* Private data of a imc_msg_t object.
*
*/
struct private_imc_msg_t {
/**
* Public imc_msg_t interface.
*/
imc_msg_t public;
/**
* Connection ID
*/
TNC_ConnectionID connection_id;
/**
* source ID
*/
TNC_UInt32 src_id;
/**
* destination ID
*/
TNC_UInt32 dst_id;
/**
* PA-TNC message type
*/
pen_type_t msg_type;
/**
* List of PA-TNC attributes to be sent
*/
linked_list_t *attr_list;
/**
* PA-TNC message
*/
pa_tnc_msg_t *pa_msg;
/**
* Assigned IMC agent
*/
imc_agent_t *agent;
/**
* Assigned IMC state
*/
imc_state_t *state;
};
METHOD(imc_msg_t, get_src_id, TNC_UInt32,
private_imc_msg_t *this)
{
return this->src_id;
}
METHOD(imc_msg_t, get_dst_id, TNC_UInt32,
private_imc_msg_t *this)
{
return this->dst_id;
}
METHOD(imc_msg_t, send_, TNC_Result,
private_imc_msg_t *this, bool excl)
{
pa_tnc_msg_t *pa_tnc_msg;
pa_tnc_attr_t *attr;
TNC_UInt32 msg_flags;
TNC_MessageType msg_type;
bool attr_added;
chunk_t msg;
enumerator_t *enumerator;
TNC_Result result;
while (this->attr_list->get_count(this->attr_list))
{
pa_tnc_msg = pa_tnc_msg_create(this->state->get_max_msg_len(this->state));
attr_added = FALSE;
enumerator = this->attr_list->create_enumerator(this->attr_list);
while (enumerator->enumerate(enumerator, &attr))
{
if (pa_tnc_msg->add_attribute(pa_tnc_msg, attr))
{
attr_added = TRUE;
}
else
{
if (attr_added)
{
break;
}
else
{
DBG1(DBG_IMC, "PA-TNC attribute too large to send, deleted");
attr->destroy(attr);
}
}
this->attr_list->remove_at(this->attr_list, enumerator);
}
enumerator->destroy(enumerator);
/* build and send the PA-TNC message via the IF-IMC interface */
if (!pa_tnc_msg->build(pa_tnc_msg))
{
pa_tnc_msg->destroy(pa_tnc_msg);
return TNC_RESULT_FATAL;
}
msg = pa_tnc_msg->get_encoding(pa_tnc_msg);
DBG3(DBG_IMC, "created PA-TNC message: %B", &msg);
if (this->state->has_long(this->state) && this->agent->send_message_long)
{
excl = excl && this->state->has_excl(this->state) &&
this->dst_id != TNC_IMVID_ANY;
msg_flags = excl ? TNC_MESSAGE_FLAGS_EXCLUSIVE : 0;
result = this->agent->send_message_long(this->src_id,
this->connection_id, msg_flags, msg.ptr, msg.len,
this->msg_type.vendor_id, this->msg_type.type,
this->dst_id);
}
else if (this->agent->send_message)
{
msg_type = (this->msg_type.vendor_id << 8) |
(this->msg_type.type & 0x000000ff);
result = this->agent->send_message(this->src_id, this->connection_id,
msg.ptr, msg.len, msg_type);
}
pa_tnc_msg->destroy(pa_tnc_msg);
if (result != TNC_RESULT_SUCCESS)
{
break;
}
}
return result;
}
METHOD(imc_msg_t, receive, TNC_Result,
private_imc_msg_t *this, bool *fatal_error)
{
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t attr_type;
chunk_t msg;
if (this->state->has_long(this->state))
{
if (this->dst_id != TNC_IMCID_ANY)
{
DBG2(DBG_IMC, "IMC %u \"%s\" received message for Connection ID %u "
"from IMV %u to IMC %u",
this->agent->get_id(this->agent),
this->agent->get_name(this->agent),
this->connection_id, this->src_id, this->dst_id);
}
else
{
DBG2(DBG_IMC, "IMC %u \"%s\" received message for Connection ID %u "
"from IMV %u", this->agent->get_id(this->agent),
this->agent->get_name(this->agent),
this->connection_id, this->src_id);
}
}
else
{
DBG2(DBG_IMC, "IMC %u \"%s\" received message for Connection ID %u",
this->agent->get_id(this->agent),
this->agent->get_name(this->agent),
this->connection_id);
}
msg = this->pa_msg->get_encoding(this->pa_msg);
DBG3(DBG_IMC, "%B", &msg);
switch (this->pa_msg->process(this->pa_msg))
{
case SUCCESS:
break;
case VERIFY_ERROR:
{
imc_msg_t *error_msg;
TNC_Result result;
error_msg = imc_msg_create_as_reply(&this->public);
/* extract and copy by reference all error attributes */
enumerator = this->pa_msg->create_error_enumerator(this->pa_msg);
while (enumerator->enumerate(enumerator, &attr))
{
error_msg->add_attribute(error_msg, attr->get_ref(attr));
}
enumerator->destroy(enumerator);
/*
* send the PA-TNC message containing all error attributes
* with the excl flag set
*/
result = error_msg->send(error_msg, TRUE);
error_msg->destroy(error_msg);
return result;
}
case FAILED:
default:
return TNC_RESULT_FATAL;
}
/* preprocess any received IETF standard error attributes */
*fatal_error = this->pa_msg->process_ietf_std_errors(this->pa_msg);
/* preprocess any received IETF assessment result attribute */
enumerator = this->pa_msg->create_attribute_enumerator(this->pa_msg);
while (enumerator->enumerate(enumerator, &attr))
{
attr_type = attr->get_type(attr);
if (attr_type.vendor_id == PEN_IETF &&
attr_type.type == IETF_ATTR_ASSESSMENT_RESULT)
{
ietf_attr_assess_result_t *attr_cast;
TNC_UInt32 target_imc_id;
TNC_IMV_Evaluation_Result result;
attr_cast = (ietf_attr_assess_result_t*)attr;
result = attr_cast->get_result(attr_cast);
target_imc_id = (this->dst_id != TNC_IMCID_ANY) ?
this->dst_id : this->agent->get_id(this->agent);
this->state->set_result(this->state, target_imc_id, result);
DBG1(DBG_IMC, "set assessment result for IMC %u to '%N'",
target_imc_id, TNC_IMV_Evaluation_Result_names, result);
}
}
enumerator->destroy(enumerator);
return TNC_RESULT_SUCCESS;
}
METHOD(imc_msg_t, add_attribute, void,
private_imc_msg_t *this, pa_tnc_attr_t *attr)
{
this->attr_list->insert_last(this->attr_list, attr);
}
METHOD(imc_msg_t, create_attribute_enumerator, enumerator_t*,
private_imc_msg_t *this)
{
return this->pa_msg->create_attribute_enumerator(this->pa_msg);
}
METHOD(imc_msg_t, destroy, void,
private_imc_msg_t *this)
{
this->attr_list->destroy_offset(this->attr_list,
offsetof(pa_tnc_attr_t, destroy));
DESTROY_IF(this->pa_msg);
free(this);
}
/**
* See header
*/
imc_msg_t *imc_msg_create(imc_agent_t *agent, imc_state_t *state,
TNC_ConnectionID connection_id,
TNC_UInt32 src_id, TNC_UInt32 dst_id,
pen_type_t msg_type)
{
private_imc_msg_t *this;
INIT(this,
.public = {
.get_src_id = _get_src_id,
.get_dst_id = _get_dst_id,
.send = _send_,
.receive = _receive,
.add_attribute = _add_attribute,
.create_attribute_enumerator = _create_attribute_enumerator,
.destroy = _destroy,
},
.connection_id = connection_id,
.src_id = src_id,
.dst_id = dst_id,
.msg_type = msg_type,
.attr_list = linked_list_create(),
.agent = agent,
.state = state,
);
return &this->public;
}
/**
* See header
*/
imc_msg_t* imc_msg_create_as_reply(imc_msg_t *msg)
{
private_imc_msg_t *in;
TNC_UInt32 src_id;
in = (private_imc_msg_t*)msg;
src_id = (in->dst_id != TNC_IMCID_ANY) ?
in->dst_id : in->agent->get_id(in->agent);
return imc_msg_create(in->agent, in->state, in->connection_id, src_id,
in->src_id, in->msg_type);
}
/**
* See header
*/
imc_msg_t *imc_msg_create_from_data(imc_agent_t *agent, imc_state_t *state,
TNC_ConnectionID connection_id,
TNC_MessageType msg_type,
chunk_t msg)
{
TNC_VendorID msg_vid;
TNC_MessageSubtype msg_subtype;
msg_vid = msg_type >> 8;
msg_subtype = msg_type & TNC_SUBTYPE_ANY;
return imc_msg_create_from_long_data(agent, state, connection_id,
TNC_IMVID_ANY, agent->get_id(agent),
msg_vid, msg_subtype, msg);
}
/**
* See header
*/
imc_msg_t *imc_msg_create_from_long_data(imc_agent_t *agent, imc_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)
{
private_imc_msg_t *this;
INIT(this,
.public = {
.get_src_id = _get_src_id,
.get_dst_id = _get_dst_id,
.send = _send_,
.receive = _receive,
.add_attribute = _add_attribute,
.create_attribute_enumerator = _create_attribute_enumerator,
.destroy = _destroy,
},
.connection_id = connection_id,
.src_id = src_id,
.dst_id = dst_id,
.msg_type = pen_type_create(msg_vid, msg_subtype),
.attr_list = linked_list_create(),
.pa_msg = pa_tnc_msg_create_from_data(msg),
.agent = agent,
.state = state,
);
return &this->public;
}
src/libimcv/imc/imc_msg.h
+142
View File
@@ -0,0 +1,142 @@
/*
* 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 imc_msg imc_msg
* @{ @ingroup libimcv
*/
#ifndef IMC_MSG_H_
#define IMC_MSG_H_
#include <imc/imc_agent.h>
typedef struct imc_msg_t imc_msg_t;
#include <library.h>
/**
* Interface for a PA-TNC message handled by an IMC.
*
*/
struct imc_msg_t {
/**
* Get source ID of PA-TNC message
*
* @return src ID
*/
TNC_UInt32 (*get_src_id)(imc_msg_t *this);
/**
* Get destination ID of PA-TNC message
*
* @return destination ID
*/
TNC_UInt32 (*get_dst_id)(imc_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)(imc_msg_t *this, bool excl);
/**
* Processes a received PA-TNC message
*
* @param fatal_error TRUE if IMV sent a fatal error message
* @return TNC result code
*/
TNC_Result (*receive)(imc_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)(imc_msg_t *this, pa_tnc_attr_t *attr);
/**
* Enumerator over PA-TNC attributes contained in the PA-TNC message
*
* @return PA-TNC attribute enumerator
*/
enumerator_t* (*create_attribute_enumerator)(imc_msg_t *this);
/**
* Destroys a imc_msg_t object.
*/
void (*destroy)(imc_msg_t *this);
};
/**
* Create a wrapper for an outbound message
*
* @param agent IMC agent responsible for the message
* @param state IMC 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_type PA-TNC message type
*/
imc_msg_t* imc_msg_create(imc_agent_t *agent, imc_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
*/
imc_msg_t* imc_msg_create_as_reply(imc_msg_t *msg);
/**
* Create a wrapper around message data received via the legacy IF-IMC interface
*
* @param agent IMC agent responsible for the message
* @param state IMC 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
*/
imc_msg_t* imc_msg_create_from_data(imc_agent_t *agent, imc_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-IMC interface
*
* @param agent IMC agent responsible for the message
* @param state IMC 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_flags PA-TNC message flags
* @param msg_vid PA-TNC message vendor ID
* @param msg_subtype PA-TNC subtype
* @param msg received PA-TNC message blob
*/
imc_msg_t* imc_msg_create_from_long_data(imc_agent_t *agent, imc_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 /** IMC_MSG_H_ @}*/