177 lines
4.0 KiB
C
177 lines
4.0 KiB
C
/*
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* Copyright (C) 2015 Andreas Steffen
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "pb_mutual_capability_msg.h"
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#include <bio/bio_writer.h>
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#include <bio/bio_reader.h>
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#include <utils/debug.h>
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ENUM_BEGIN(pb_tnc_mutual_protocol_type_names, PB_MUTUAL_FULL_DUPLEX,
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PB_MUTUAL_FULL_DUPLEX,
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"full duplex");
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ENUM_NEXT(pb_tnc_mutual_protocol_type_names, PB_MUTUAL_HALF_DUPLEX,
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PB_MUTUAL_HALF_DUPLEX, PB_MUTUAL_FULL_DUPLEX,
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"half duplex");
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ENUM_END(pb_tnc_mutual_protocol_type_names, PB_MUTUAL_HALF_DUPLEX);
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typedef struct private_pb_mutual_capability_msg_t private_pb_mutual_capability_msg_t;
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/**
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* PB-Mutual-Capability message
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*
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |H|F| Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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# define MUTUAL_CAPABILITY_HEADER_SIZE 4
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/**
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* Private data of a pb_mutual_capability_msg_t object.
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*
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*/
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struct private_pb_mutual_capability_msg_t {
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/**
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* Public pb_mutual_capability_msg_t interface.
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*/
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pb_mutual_capability_msg_t public;
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/**
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* PB-TNC message type
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*/
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pen_type_t type;
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/**
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* PB-TNC mutual protocols
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*/
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uint32_t protocols;
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/**
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* Encoded message
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*/
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chunk_t encoding;
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};
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METHOD(pb_tnc_msg_t, get_type, pen_type_t,
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private_pb_mutual_capability_msg_t *this)
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{
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return this->type;
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}
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METHOD(pb_tnc_msg_t, get_encoding, chunk_t,
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private_pb_mutual_capability_msg_t *this)
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{
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return this->encoding;
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}
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METHOD(pb_tnc_msg_t, build, void,
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private_pb_mutual_capability_msg_t *this)
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{
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bio_writer_t *writer;
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if (this->encoding.ptr)
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{
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return;
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}
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writer = bio_writer_create(MUTUAL_CAPABILITY_HEADER_SIZE);
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writer->write_uint32(writer, this->protocols);
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this->encoding = writer->get_buf(writer);
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this->encoding = chunk_clone(this->encoding);
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writer->destroy(writer);
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}
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METHOD(pb_tnc_msg_t, process, status_t,
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private_pb_mutual_capability_msg_t *this, uint32_t *offset)
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{
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bio_reader_t *reader;
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*offset = 0;
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/* process message */
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reader = bio_reader_create(this->encoding);
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reader->read_uint32(reader, &this->protocols);
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reader->destroy(reader);
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return SUCCESS;
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}
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METHOD(pb_tnc_msg_t, destroy, void,
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private_pb_mutual_capability_msg_t *this)
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{
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free(this->encoding.ptr);
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free(this);
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}
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METHOD(pb_mutual_capability_msg_t, get_protocols, uint32_t,
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private_pb_mutual_capability_msg_t *this)
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{
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return this->protocols;
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}
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/**
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* See header
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*/
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pb_tnc_msg_t* pb_mutual_capability_msg_create(uint32_t protocols)
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{
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private_pb_mutual_capability_msg_t *this;
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INIT(this,
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.public = {
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.pb_interface = {
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.get_type = _get_type,
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.get_encoding = _get_encoding,
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.build = _build,
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.process = _process,
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.destroy = _destroy,
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},
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.get_protocols = _get_protocols,
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},
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.type = { PEN_ITA, PB_ITA_MSG_MUTUAL_CAPABILITY },
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.protocols = protocols,
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);
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return &this->public.pb_interface;
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}
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/**
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* See header
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*/
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pb_tnc_msg_t *pb_mutual_capability_msg_create_from_data(chunk_t data)
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{
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private_pb_mutual_capability_msg_t *this;
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INIT(this,
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.public = {
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.pb_interface = {
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.get_type = _get_type,
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.get_encoding = _get_encoding,
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.build = _build,
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.process = _process,
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.destroy = _destroy,
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},
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.get_protocols = _get_protocols,
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},
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.type = { PEN_ITA, PB_ITA_MSG_MUTUAL_CAPABILITY },
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.encoding = chunk_clone(data),
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);
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return &this->public.pb_interface;
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}
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