299 lines
6.5 KiB
C
299 lines
6.5 KiB
C
/*
|
|
* Copyright (C) 2012 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 "ietf_attr_string_version.h"
|
|
|
|
#include <pa_tnc/pa_tnc_msg.h>
|
|
#include <bio/bio_writer.h>
|
|
#include <bio/bio_reader.h>
|
|
#include <debug.h>
|
|
|
|
typedef struct private_ietf_attr_string_version_t private_ietf_attr_string_version_t;
|
|
|
|
/**
|
|
* PA-TNC String Version type (see section 4.2.4 of RFC 5792)
|
|
*
|
|
* 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
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Version Len | Product Version Number (Variable Length) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Build Num Len | Internal Build Number (Variable Length) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Config. Len | Configuration Version Number (Variable Length)|
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
|
|
#define STRING_VERSION_MIN_SIZE 3
|
|
|
|
/**
|
|
* Private data of an ietf_attr_string_version_t object.
|
|
*/
|
|
struct private_ietf_attr_string_version_t {
|
|
|
|
/**
|
|
* Public members of ietf_attr_string_version_t
|
|
*/
|
|
ietf_attr_string_version_t public;
|
|
|
|
/**
|
|
* Vendor-specific attribute type
|
|
*/
|
|
pen_type_t type;
|
|
|
|
/**
|
|
* Attribute value
|
|
*/
|
|
chunk_t value;
|
|
|
|
/**
|
|
* Noskip flag
|
|
*/
|
|
bool noskip_flag;
|
|
|
|
/**
|
|
* Product Version Number
|
|
*/
|
|
chunk_t version;
|
|
|
|
/**
|
|
* Internal Build Number
|
|
*/
|
|
chunk_t build;
|
|
|
|
/**
|
|
* Configuration Version Number
|
|
*/
|
|
chunk_t config;
|
|
|
|
/**
|
|
* Reference count
|
|
*/
|
|
refcount_t ref;
|
|
};
|
|
|
|
METHOD(pa_tnc_attr_t, get_type, pen_type_t,
|
|
private_ietf_attr_string_version_t *this)
|
|
{
|
|
return this->type;
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, get_value, chunk_t,
|
|
private_ietf_attr_string_version_t *this)
|
|
{
|
|
return this->value;
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
|
|
private_ietf_attr_string_version_t *this)
|
|
{
|
|
return this->noskip_flag;
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, set_noskip_flag,void,
|
|
private_ietf_attr_string_version_t *this, bool noskip)
|
|
{
|
|
this->noskip_flag = noskip;
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, build, void,
|
|
private_ietf_attr_string_version_t *this)
|
|
{
|
|
bio_writer_t *writer;
|
|
|
|
if (this->value.ptr)
|
|
{
|
|
return;
|
|
}
|
|
|
|
writer = bio_writer_create(STRING_VERSION_MIN_SIZE);
|
|
writer->write_data8(writer, this->version);
|
|
writer->write_data8(writer, this->build);
|
|
writer->write_data8(writer, this->config);
|
|
|
|
this->value = chunk_clone(writer->get_buf(writer));
|
|
writer->destroy(writer);
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, process, status_t,
|
|
private_ietf_attr_string_version_t *this, u_int32_t *offset)
|
|
{
|
|
bio_reader_t *reader;
|
|
status_t status = FAILED;
|
|
chunk_t version, build, config;
|
|
u_char *pos;
|
|
|
|
*offset = 0;
|
|
|
|
if (this->value.len < STRING_VERSION_MIN_SIZE)
|
|
{
|
|
DBG1(DBG_TNC, "insufficient data for IETF string version");
|
|
return FAILED;
|
|
}
|
|
reader = bio_reader_create(this->value);
|
|
|
|
if (!reader->read_data8(reader, &version))
|
|
{
|
|
DBG1(DBG_TNC, "insufficient data for IETF product version number");
|
|
goto end;
|
|
|
|
}
|
|
pos = memchr(version.ptr, '\0', version.len);
|
|
if (pos)
|
|
{
|
|
DBG1(DBG_TNC, "nul termination in IETF product version number");
|
|
*offset += 1 + (pos - version.ptr);
|
|
goto end;
|
|
}
|
|
*offset += 1 + version.len;
|
|
|
|
if (!reader->read_data8(reader, &build))
|
|
{
|
|
DBG1(DBG_TNC, "insufficient data for IETF internal build number");
|
|
goto end;
|
|
|
|
}
|
|
pos = memchr(build.ptr, '\0', build.len);
|
|
if (pos)
|
|
{
|
|
DBG1(DBG_TNC, "nul termination in IETF internal build number");
|
|
*offset += 1 + (pos - build.ptr);
|
|
goto end;
|
|
}
|
|
*offset += 1 + build.len;
|
|
|
|
if (!reader->read_data8(reader, &config))
|
|
{
|
|
DBG1(DBG_TNC, "insufficient data for IETF configuration version number");
|
|
goto end;
|
|
|
|
}
|
|
pos = memchr(config.ptr, '\0', config.len);
|
|
if (pos)
|
|
{
|
|
DBG1(DBG_TNC, "nul termination in IETF configuration version number");
|
|
*offset += 1 + (pos - config.ptr);
|
|
goto end;
|
|
}
|
|
|
|
this->version = chunk_clone(version);
|
|
this->build = chunk_clone(build);
|
|
this->config = chunk_clone(config);
|
|
status = SUCCESS;
|
|
|
|
end:
|
|
reader->destroy(reader);
|
|
return status;
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
|
|
private_ietf_attr_string_version_t *this)
|
|
{
|
|
ref_get(&this->ref);
|
|
return &this->public.pa_tnc_attribute;
|
|
}
|
|
|
|
METHOD(pa_tnc_attr_t, destroy, void,
|
|
private_ietf_attr_string_version_t *this)
|
|
{
|
|
if (ref_put(&this->ref))
|
|
{
|
|
free(this->version.ptr);
|
|
free(this->build.ptr);
|
|
free(this->config.ptr);
|
|
free(this->value.ptr);
|
|
free(this);
|
|
}
|
|
}
|
|
|
|
METHOD(ietf_attr_string_version_t, get_version, chunk_t,
|
|
private_ietf_attr_string_version_t *this, chunk_t *build, chunk_t *config)
|
|
{
|
|
if (build)
|
|
{
|
|
*build = this->build;
|
|
}
|
|
if (config)
|
|
{
|
|
*config = this->config;
|
|
}
|
|
return this->version;
|
|
}
|
|
|
|
/**
|
|
* Described in header.
|
|
*/
|
|
pa_tnc_attr_t *ietf_attr_string_version_create(chunk_t version, chunk_t build,
|
|
chunk_t config)
|
|
{
|
|
private_ietf_attr_string_version_t *this;
|
|
|
|
/* limit version numbers to 255 octets */
|
|
version.len = min(255, version.len);
|
|
build.len = min(255, build.len);
|
|
config.len = min(255, config.len);
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.pa_tnc_attribute = {
|
|
.get_type = _get_type,
|
|
.get_value = _get_value,
|
|
.get_noskip_flag = _get_noskip_flag,
|
|
.set_noskip_flag = _set_noskip_flag,
|
|
.build = _build,
|
|
.process = _process,
|
|
.get_ref = _get_ref,
|
|
.destroy = _destroy,
|
|
},
|
|
.get_version = _get_version,
|
|
},
|
|
.type = { PEN_IETF, IETF_ATTR_STRING_VERSION },
|
|
.version = chunk_clone(version),
|
|
.build = chunk_clone(build),
|
|
.config = chunk_clone(config),
|
|
.ref = 1,
|
|
);
|
|
|
|
return &this->public.pa_tnc_attribute;
|
|
}
|
|
|
|
/**
|
|
* Described in header.
|
|
*/
|
|
pa_tnc_attr_t *ietf_attr_string_version_create_from_data(chunk_t data)
|
|
{
|
|
private_ietf_attr_string_version_t *this;
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.pa_tnc_attribute = {
|
|
.get_type = _get_type,
|
|
.get_value = _get_value,
|
|
.build = _build,
|
|
.process = _process,
|
|
.get_ref = _get_ref,
|
|
.destroy = _destroy,
|
|
},
|
|
.get_version = _get_version,
|
|
},
|
|
.type = { PEN_IETF, IETF_ATTR_STRING_VERSION },
|
|
.value = chunk_clone(data),
|
|
.ref = 1,
|
|
);
|
|
|
|
return &this->public.pa_tnc_attribute;
|
|
}
|
|
|