304 lines
7.0 KiB
C
304 lines
7.0 KiB
C
/*
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* Copyright (C) 2012-2014 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 "ietf_attr_numeric_version.h"
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#include <pa_tnc/pa_tnc_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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typedef struct private_ietf_attr_numeric_version_t private_ietf_attr_numeric_version_t;
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/**
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* PA-TNC Numeric Version type (see section 4.2.3 of RFC 5792)
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*
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* 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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* | Major Version Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Minor Version Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Build Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Service Pack Major | Service Pack Minor |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define NUMERIC_VERSION_SIZE 16
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/**
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* Private data of an ietf_attr_numeric_version_t object.
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*/
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struct private_ietf_attr_numeric_version_t {
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/**
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* Public members of ietf_attr_numeric_version_t
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*/
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ietf_attr_numeric_version_t public;
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/**
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* Vendor-specific attribute type
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*/
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pen_type_t type;
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/**
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* Length of attribute value
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*/
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size_t length;
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/**
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* Attribute value or segment
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*/
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chunk_t value;
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/**
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* Noskip flag
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*/
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bool noskip_flag;
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/**
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* Major Version Number
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*/
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uint32_t major_version;
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/**
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* Minor Version Number
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*/
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uint32_t minor_version;
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/**
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* IBuild Number
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*/
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uint32_t build;
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/**
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* Service Pack Major Number
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*/
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uint16_t service_pack_major;
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/**
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* Service Pack Minor Number
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*/
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uint16_t service_pack_minor;
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/**
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* Reference count
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*/
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refcount_t ref;
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};
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METHOD(pa_tnc_attr_t, get_type, pen_type_t,
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private_ietf_attr_numeric_version_t *this)
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{
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return this->type;
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}
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METHOD(pa_tnc_attr_t, get_value, chunk_t,
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private_ietf_attr_numeric_version_t *this)
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{
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return this->value;
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}
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METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
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private_ietf_attr_numeric_version_t *this)
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{
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return this->noskip_flag;
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}
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METHOD(pa_tnc_attr_t, set_noskip_flag,void,
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private_ietf_attr_numeric_version_t *this, bool noskip)
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{
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this->noskip_flag = noskip;
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}
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METHOD(pa_tnc_attr_t, build, void,
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private_ietf_attr_numeric_version_t *this)
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{
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bio_writer_t *writer;
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if (this->value.ptr)
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{
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return;
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}
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writer = bio_writer_create(NUMERIC_VERSION_SIZE);
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writer->write_uint32(writer, this->major_version);
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writer->write_uint32(writer, this->minor_version);
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writer->write_uint32(writer, this->build);
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writer->write_uint16(writer, this->service_pack_major);
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writer->write_uint16(writer, this->service_pack_minor);
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this->value = writer->extract_buf(writer);
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this->length = this->value.len;
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writer->destroy(writer);
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}
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METHOD(pa_tnc_attr_t, process, status_t,
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private_ietf_attr_numeric_version_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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if (this->value.len < this->length)
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{
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return NEED_MORE;
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}
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if (this->value.len < NUMERIC_VERSION_SIZE)
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{
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DBG1(DBG_TNC, "insufficient data for IETF numeric version");
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return FAILED;
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}
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reader = bio_reader_create(this->value);
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reader->read_uint32(reader, &this->major_version);
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reader->read_uint32(reader, &this->minor_version);
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reader->read_uint32(reader, &this->build);
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reader->read_uint16(reader, &this->service_pack_major);
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reader->read_uint16(reader, &this->service_pack_minor);
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reader->destroy(reader);
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return SUCCESS;
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}
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METHOD(pa_tnc_attr_t, add_segment, void,
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private_ietf_attr_numeric_version_t *this, chunk_t segment)
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{
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this->value = chunk_cat("mc", this->value, segment);
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}
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METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
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private_ietf_attr_numeric_version_t *this)
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{
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ref_get(&this->ref);
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return &this->public.pa_tnc_attribute;
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}
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METHOD(pa_tnc_attr_t, destroy, void,
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private_ietf_attr_numeric_version_t *this)
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{
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if (ref_put(&this->ref))
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{
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free(this->value.ptr);
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free(this);
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}
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}
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METHOD(ietf_attr_numeric_version_t, get_version, void,
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private_ietf_attr_numeric_version_t *this, uint32_t *major, uint32_t *minor)
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{
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if (major)
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{
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*major = this->major_version;
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}
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if (minor)
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{
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*minor = this->minor_version;
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}
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}
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METHOD(ietf_attr_numeric_version_t, get_build, uint32_t,
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private_ietf_attr_numeric_version_t *this)
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{
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return this->build;
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}
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METHOD(ietf_attr_numeric_version_t, get_service_pack, void,
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private_ietf_attr_numeric_version_t *this, uint16_t *major, uint16_t *minor)
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{
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if (major)
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{
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*major = this->service_pack_major;
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}
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if (minor)
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{
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*minor = this->service_pack_minor;
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}
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}
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/**
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* Described in header.
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*/
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pa_tnc_attr_t *ietf_attr_numeric_version_create(uint32_t major, uint32_t minor,
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uint32_t build,
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uint16_t service_pack_major,
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uint16_t service_pack_minor)
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{
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private_ietf_attr_numeric_version_t *this;
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INIT(this,
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.public = {
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.pa_tnc_attribute = {
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.get_type = _get_type,
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.get_value = _get_value,
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.get_noskip_flag = _get_noskip_flag,
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.set_noskip_flag = _set_noskip_flag,
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.build = _build,
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.process = _process,
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.add_segment = _add_segment,
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.get_ref = _get_ref,
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.destroy = _destroy,
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},
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.get_version = _get_version,
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.get_build = _get_build,
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.get_service_pack = _get_service_pack,
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},
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.type = { PEN_IETF, IETF_ATTR_NUMERIC_VERSION },
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.major_version = major,
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.minor_version = minor,
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.build = build,
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.service_pack_major = service_pack_major,
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.service_pack_minor = service_pack_minor,
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.ref = 1,
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);
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return &this->public.pa_tnc_attribute;
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}
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/**
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* Described in header.
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*/
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pa_tnc_attr_t *ietf_attr_numeric_version_create_from_data(size_t length,
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chunk_t data)
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{
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private_ietf_attr_numeric_version_t *this;
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INIT(this,
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.public = {
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.pa_tnc_attribute = {
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.get_type = _get_type,
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.get_value = _get_value,
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.get_noskip_flag = _get_noskip_flag,
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.set_noskip_flag = _set_noskip_flag,
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.build = _build,
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.process = _process,
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.add_segment = _add_segment,
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.get_ref = _get_ref,
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.destroy = _destroy,
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},
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.get_version = _get_version,
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.get_build = _get_build,
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.get_service_pack = _get_service_pack,
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},
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.type = { PEN_IETF, IETF_ATTR_NUMERIC_VERSION },
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.length = length,
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.value = chunk_clone(data),
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.ref = 1,
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);
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return &this->public.pa_tnc_attribute;
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}
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