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/*
* Copyright (C) 2015 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 "pb_mutual_capability_msg.h"
#include <bio/bio_writer.h>
#include <bio/bio_reader.h>
#include <utils/debug.h>
ENUM(pb_tnc_mutual_protocol_type_names, PB_MUTUAL_HALF_DUPLEX,
PB_MUTUAL_FULL_DUPLEX,
"half duplex",
"full duplex"
);
typedef struct private_pb_mutual_capability_msg_t private_pb_mutual_capability_msg_t;
/**
* PB-Mutual-Capability message
*
* 0 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
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |H|F| Reserved |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
# define MUTUAL_CAPABILITY_HEADER_SIZE 4
/**
* Private data of a pb_mutual_capability_msg_t object.
*
*/
struct private_pb_mutual_capability_msg_t {
/**
* Public pb_mutual_capability_msg_t interface.
*/
pb_mutual_capability_msg_t public;
/**
* PB-TNC message type
*/
pen_type_t type;
/**
* PB-TNC mutual protocols
*/
uint32_t protocols;
/**
* Encoded message
*/
chunk_t encoding;
};
METHOD(pb_tnc_msg_t, get_type, pen_type_t,
private_pb_mutual_capability_msg_t *this)
{
return this->type;
}
METHOD(pb_tnc_msg_t, get_encoding, chunk_t,
private_pb_mutual_capability_msg_t *this)
{
return this->encoding;
}
METHOD(pb_tnc_msg_t, build, void,
private_pb_mutual_capability_msg_t *this)
{
bio_writer_t *writer;
if (this->encoding.ptr)
{
return;
}
writer = bio_writer_create(MUTUAL_CAPABILITY_HEADER_SIZE);
writer->write_uint32(writer, this->protocols);
this->encoding = writer->get_buf(writer);
this->encoding = chunk_clone(this->encoding);
writer->destroy(writer);
}
METHOD(pb_tnc_msg_t, process, status_t,
private_pb_mutual_capability_msg_t *this, uint32_t *offset)
{
bio_reader_t *reader;
*offset = 0;
/* process message */
reader = bio_reader_create(this->encoding);
reader->read_uint32(reader, &this->protocols);
reader->destroy(reader);
return SUCCESS;
}
METHOD(pb_tnc_msg_t, destroy, void,
private_pb_mutual_capability_msg_t *this)
{
free(this->encoding.ptr);
free(this);
}
METHOD(pb_mutual_capability_msg_t, get_protocols, uint32_t,
private_pb_mutual_capability_msg_t *this)
{
return this->protocols;
}
/**
* See header
*/
pb_tnc_msg_t* pb_mutual_capability_msg_create(uint32_t protocols)
{
private_pb_mutual_capability_msg_t *this;
INIT(this,
.public = {
.pb_interface = {
.get_type = _get_type,
.get_encoding = _get_encoding,
.build = _build,
.process = _process,
.destroy = _destroy,
},
.get_protocols = _get_protocols,
},
.type = { PEN_ITA, PB_ITA_MSG_MUTUAL_CAPABILITY },
.protocols = protocols,
);
return &this->public.pb_interface;
}
/**
* See header
*/
pb_tnc_msg_t *pb_mutual_capability_msg_create_from_data(chunk_t data)
{
private_pb_mutual_capability_msg_t *this;
INIT(this,
.public = {
.pb_interface = {
.get_type = _get_type,
.get_encoding = _get_encoding,
.build = _build,
.process = _process,
.destroy = _destroy,
},
.get_protocols = _get_protocols,
},
.type = { PEN_ITA, PB_ITA_MSG_MUTUAL_CAPABILITY },
.encoding = chunk_clone(data),
);
return &this->public.pb_interface;
}
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