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/*
* Copyright (C) 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 "tncif_identity.h"
#include <bio/bio_writer.h>
#include <bio/bio_reader.h>
#include <pen/pen.h>
#include <utils/debug.h>
typedef struct private_tncif_identity_t private_tncif_identity_t;
/**
* TNC Identity List Attribute Format (TCG TNC IF-IMV 1.4 Draft)
*
* 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Identity Count |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | RESERVED | Identity Type Vendor ID |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Identity Type |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Identity Value Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | |
* ~ Identity Value ~
* | |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | RESERVED | Subject Type Vendor ID |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Subject Type |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | RESERVED | Authentication Method Vendor ID |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Authentication Method |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
/**
* Private data of a tncif_identity_t object.
*
*/
struct private_tncif_identity_t {
/**
* Public tncif_identity_t interface.
*/
tncif_identity_t public;
/**
* Identity Type
*/
pen_type_t identity_type;
/**
* Identity Value
*/
chunk_t identity_value;
/**
* Subject Type
*/
pen_type_t subject_type;
/**
* Authentication Type
*/
pen_type_t auth_type;
};
METHOD(tncif_identity_t, get_identity_type, pen_type_t,
private_tncif_identity_t *this)
{
return this->identity_type;
}
METHOD(tncif_identity_t, get_identity_value, chunk_t,
private_tncif_identity_t *this)
{
return this->identity_value;
}
METHOD(tncif_identity_t, get_subject_type, pen_type_t,
private_tncif_identity_t *this)
{
return this->subject_type;
}
METHOD(tncif_identity_t, get_auth_type, pen_type_t,
private_tncif_identity_t *this)
{
return this->auth_type;
}
METHOD(tncif_identity_t, build, void,
private_tncif_identity_t *this, bio_writer_t *writer)
{
writer->write_uint32(writer, this->identity_type.vendor_id);
writer->write_uint32(writer, this->identity_type.type);
writer->write_data32(writer, this->identity_value);
writer->write_uint32(writer, this->subject_type.vendor_id);
writer->write_uint32(writer, this->subject_type.type);
writer->write_uint32(writer, this->auth_type.vendor_id);
writer->write_uint32(writer, this->auth_type.type);
}
METHOD(tncif_identity_t, process, bool,
private_tncif_identity_t *this, bio_reader_t *reader)
{
u_int8_t reserved;
u_int32_t vendor_id, type;
chunk_t identity_value;
if (reader->remaining(reader) < TNCIF_IDENTITY_MIN_SIZE)
{
return FALSE;
}
reader->read_uint8 (reader, &reserved);
reader->read_uint24(reader, &vendor_id);
reader->read_uint32(reader, &type);
this->identity_type = pen_type_create(vendor_id, type);
if (!reader->read_data32(reader, &identity_value) ||
reader->remaining(reader) < 16)
{
return FALSE;
}
this->identity_value = chunk_clone(identity_value);
reader->read_uint8 (reader, &reserved);
reader->read_uint24(reader, &vendor_id);
reader->read_uint32(reader, &type);
this->subject_type = pen_type_create(vendor_id, type);
reader->read_uint8 (reader, &reserved);
reader->read_uint24(reader, &vendor_id);
reader->read_uint32(reader, &type);
this->auth_type = pen_type_create(vendor_id, type);
return TRUE;
}
METHOD(tncif_identity_t, destroy, void,
private_tncif_identity_t *this)
{
free(this->identity_value.ptr);
free(this);
}
/**
* See header
*/
tncif_identity_t *tncif_identity_create_empty(void)
{
private_tncif_identity_t *this;
INIT(this,
.public = {
.get_identity_type = _get_identity_type,
.get_identity_value = _get_identity_value,
.get_subject_type = _get_subject_type,
.get_auth_type = _get_auth_type,
.build = _build,
.process = _process,
.destroy = _destroy,
},
);
return &this->public;
}
/**
* See header
*/
tncif_identity_t *tncif_identity_create(pen_type_t identity_type,
chunk_t identity_value,
pen_type_t subject_type,
pen_type_t auth_type)
{
private_tncif_identity_t *this;
this = (private_tncif_identity_t*)tncif_identity_create_empty();
this->identity_type = identity_type;
this->identity_value = identity_value;
this->subject_type = subject_type;
this->auth_type = auth_type;
return &this->public;
}
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