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/*
* Copyright (C) 2010 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_11.h"
#include <libtnctncc.h>
#include <libtnctncs.h>
#include <debug.h>
static chunk_t output;
/**
* Define callback functions called by the libtnc library
*/
TNC_Result TNC_TNCC_SendBatch(libtnc_tncc_connection* conn,
const char* messageBuffer, size_t messageLength)
{
chunk_free(&output);
output = chunk_alloc(messageLength);
memcpy(output.ptr, messageBuffer, messageLength);
return TNC_RESULT_SUCCESS;
}
TNC_Result TNC_TNCS_SendBatch(libtnc_tncs_connection* conn,
const char* messageBuffer, size_t messageLength)
{
chunk_free(&output);
output = chunk_alloc(messageLength);
memcpy(output.ptr, messageBuffer, messageLength);
return TNC_RESULT_SUCCESS;
}
typedef struct private_tnccs_11_t private_tnccs_11_t;
/**
* Private data of a tnccs_11_t object.
*/
struct private_tnccs_11_t {
/**
* Public tls_t interface.
*/
tls_t public;
/**
* TNCC if TRUE, TNCS if FALSE
*/
bool is_server;
/**
* TNCC Connection to IMCs
*/
libtnc_tncc_connection* tncc_connection;
/**
* TNCS Connection to IMVs
*/
libtnc_tncs_connection* tncs_connection;
};
METHOD(tls_t, process, status_t,
private_tnccs_11_t *this, void *buf, size_t buflen)
{
if (this->is_server && !this->tncs_connection)
{
this->tncs_connection = libtnc_tncs_CreateConnection(NULL);
if (!this->tncs_connection)
{
DBG1(DBG_IKE, "TNCS CreateConnection failed");
return FAILED;
}
DBG1(DBG_IKE, "assigned TNCS Connection ID: %d",
this->tncs_connection->connectionID);
if (libtnc_tncs_BeginSession(this->tncs_connection) != TNC_RESULT_SUCCESS)
{
DBG1(DBG_IKE, "TNCS BeginSession failed");
return FAILED;
}
}
DBG1(DBG_IKE, "received TNCCS Batch with %u bytes:", buflen);
DBG1(DBG_IKE, "%.*s", buflen, buf);
if (this->is_server)
{
if (libtnc_tncs_ReceiveBatch(this->tncs_connection, buf, buflen) !=
TNC_RESULT_SUCCESS)
{
DBG1(DBG_IKE, "TNCS ReceiveBatch failed");
return FAILED;
}
}
else
{
if (libtnc_tncc_ReceiveBatch(this->tncc_connection, buf, buflen) !=
TNC_RESULT_SUCCESS)
{
DBG1(DBG_IKE, "TNCC ReceiveBatch failed");
return FAILED;
}
}
return NEED_MORE;
}
METHOD(tls_t, build, status_t,
private_tnccs_11_t *this, void *buf, size_t *buflen, size_t *msglen)
{
size_t len;
if (!this->is_server && !this->tncc_connection)
{
this->tncc_connection = libtnc_tncc_CreateConnection(NULL);
if (!this->tncc_connection)
{
DBG1(DBG_IKE, "TNCC CreateConnection failed");
return FAILED;
}
DBG1(DBG_IKE, "assigned TNCC Connection ID: %d",
this->tncc_connection->connectionID);
if (libtnc_tncc_BeginSession(this->tncc_connection) != TNC_RESULT_SUCCESS)
{
DBG1(DBG_IKE, "TNCC BeginSession failed");
return FAILED;
}
}
len = *buflen;
len = min(len, output.len);
*buflen = len;
if (msglen)
{
*msglen = output.len;
}
if (output.len)
{
DBG1(DBG_IKE, "sending TNCCS Batch with %d bytes:", output.len);
DBG1(DBG_IKE, "%.*s", output.len, output.ptr);
memcpy(buf, output.ptr, len);
chunk_free(&output);
return ALREADY_DONE;
}
else
{
return INVALID_STATE;
}
}
METHOD(tls_t, is_server, bool,
private_tnccs_11_t *this)
{
return this->is_server;
}
METHOD(tls_t, get_purpose, tls_purpose_t,
private_tnccs_11_t *this)
{
return TLS_PURPOSE_EAP_TNC;
}
METHOD(tls_t, is_complete, bool,
private_tnccs_11_t *this)
{
TNC_IMV_Action_Recommendation* rec = NULL;
TNC_IMV_Evaluation_Result* eval = NULL;
if (libtnc_tncs_HaveRecommendation(this->tncs_connection, rec, eval) ==
TNC_RESULT_SUCCESS)
{
DBG1(DBG_IKE, "have recommendation");
return TRUE;
}
else
{
DBG1(DBG_IKE, "no recommendation");
return FALSE;
}
}
METHOD(tls_t, get_eap_msk, chunk_t,
private_tnccs_11_t *this)
{
return chunk_empty;
}
METHOD(tls_t, destroy, void,
private_tnccs_11_t *this)
{
if (this->is_server)
{
if (this->tncs_connection)
{
/* libtnc_tncs_DeleteConnection(this->tncs_connection); */
}
}
else
{
if (this->tncc_connection)
{
libtnc_tncc_DeleteConnection(this->tncc_connection);
}
libtnc_tncc_Terminate();
}
free(this);
}
/**
* See header
*/
tls_t *tnccs_11_create(bool is_server)
{
char *tnc_config, *pref_lang;
private_tnccs_11_t *this;
INIT(this,
.public = {
.process = _process,
.build = _build,
.is_server = _is_server,
.get_purpose = _get_purpose,
.is_complete = _is_complete,
.get_eap_msk = _get_eap_msk,
.destroy = _destroy,
},
.is_server = is_server,
);
return &this->public;
}
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