286 lines
6.7 KiB
C
286 lines
6.7 KiB
C
/*
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* Copyright (C) 2011 Sansar Choinyambuu
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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 "tcg_pts_attr_req_file_meas.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 <debug.h>
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typedef struct private_tcg_pts_attr_req_file_meas_t private_tcg_pts_attr_req_file_meas_t;
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/**
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* Request File Measurement
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* see section 3.19.1 of PTS Protocol: Binding to TNC IF-M Specification
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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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* | Flags | Reserved | Request ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Delimiter |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* ~ Fully Qualified File Pathname (Variable Length) ~
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define PTS_REQ_FILE_MEAS_SIZE 8
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#define PTS_REQ_FILE_MEAS_RESERVED 0x00
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#define PTS_REQ_FILE_MEAS_NO_FLAGS 0x00
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#define DIRECTORY_CONTENTS_FLAG (1<<7)
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/**
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* Private data of an tcg_pts_attr_req_file_meas_t object.
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*/
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struct private_tcg_pts_attr_req_file_meas_t {
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/**
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* Public members of tcg_pts_attr_req_file_meas_t
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*/
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tcg_pts_attr_req_file_meas_t public;
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/**
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* Attribute vendor ID
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*/
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pen_t vendor_id;
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/**
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* Attribute type
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*/
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u_int32_t type;
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/**
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* Attribute value
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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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* Directory Contents flag
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*/
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bool directory_flag;
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/**
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* Request ID
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*/
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u_int16_t request_id;
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/**
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* UTF8 Encoding of Delimiter Character
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*/
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u_int32_t delimiter;
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/**
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* Fully Qualified File Pathname
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*/
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char *pathname;
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};
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METHOD(pa_tnc_attr_t, get_vendor_id, pen_t,
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private_tcg_pts_attr_req_file_meas_t *this)
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{
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return this->vendor_id;
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}
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METHOD(pa_tnc_attr_t, get_type, u_int32_t,
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private_tcg_pts_attr_req_file_meas_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_tcg_pts_attr_req_file_meas_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_tcg_pts_attr_req_file_meas_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_tcg_pts_attr_req_file_meas_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_tcg_pts_attr_req_file_meas_t *this)
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{
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u_int8_t flags = PTS_REQ_FILE_MEAS_NO_FLAGS;
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chunk_t pathname;
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bio_writer_t *writer;
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if (this->directory_flag)
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{
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flags |= DIRECTORY_CONTENTS_FLAG;
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}
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pathname = chunk_create(this->pathname, strlen(this->pathname));
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writer = bio_writer_create(PTS_REQ_FILE_MEAS_SIZE);
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writer->write_uint8 (writer, flags);
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writer->write_uint8 (writer, PTS_REQ_FILE_MEAS_RESERVED);
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writer->write_uint16(writer, this->request_id);
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writer->write_uint32(writer, this->delimiter);
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writer->write_data (writer, pathname);
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this->value = chunk_clone(writer->get_buf(writer));
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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_tcg_pts_attr_req_file_meas_t *this, u_int32_t *offset)
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{
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bio_reader_t *reader;
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u_int8_t flags;
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u_int8_t reserved;
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chunk_t pathname;
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if (this->value.len < PTS_REQ_FILE_MEAS_SIZE)
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{
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DBG1(DBG_TNC, "insufficient data for Request File Measurement");
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*offset = 0;
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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_uint8 (reader, &flags);
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reader->read_uint8 (reader, &reserved);
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reader->read_uint16(reader, &this->request_id);
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reader->read_uint32(reader, &this->delimiter);
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reader->read_data (reader, reader->remaining(reader), &pathname);
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this->directory_flag = (flags & DIRECTORY_CONTENTS_FLAG) !=
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PTS_REQ_FILE_MEAS_NO_FLAGS;
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this->pathname = malloc(pathname.len + 1);
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memcpy(this->pathname, pathname.ptr, pathname.len);
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this->pathname[pathname.len] = '\0';
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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, destroy, void,
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private_tcg_pts_attr_req_file_meas_t *this)
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{
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free(this->pathname);
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free(this->value.ptr);
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free(this);
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}
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METHOD(tcg_pts_attr_req_file_meas_t, get_directory_flag, bool,
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private_tcg_pts_attr_req_file_meas_t *this)
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{
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return this->directory_flag;
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}
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METHOD(tcg_pts_attr_req_file_meas_t, get_request_id, u_int16_t,
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private_tcg_pts_attr_req_file_meas_t *this)
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{
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return this->request_id;
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}
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METHOD(tcg_pts_attr_req_file_meas_t, get_delimiter, u_int32_t,
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private_tcg_pts_attr_req_file_meas_t *this)
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{
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return this->delimiter;
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}
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METHOD(tcg_pts_attr_req_file_meas_t, get_pathname, char*,
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private_tcg_pts_attr_req_file_meas_t *this)
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{
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return this->pathname;
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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 *tcg_pts_attr_req_file_meas_create(bool directory_flag,
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u_int16_t request_id,
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u_int32_t delimiter,
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char *pathname)
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{
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private_tcg_pts_attr_req_file_meas_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_vendor_id = _get_vendor_id,
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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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.destroy = _destroy,
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},
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.get_directory_flag = _get_directory_flag,
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.get_request_id = _get_request_id,
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.get_delimiter = _get_delimiter,
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.get_pathname = _get_pathname,
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},
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.vendor_id = PEN_TCG,
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.type = TCG_PTS_REQ_FILE_MEAS,
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.directory_flag = directory_flag,
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.request_id = request_id,
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.delimiter = delimiter,
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.pathname = strdup(pathname),
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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 *tcg_pts_attr_req_file_meas_create_from_data(chunk_t data)
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{
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private_tcg_pts_attr_req_file_meas_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_vendor_id = _get_vendor_id,
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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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.destroy = _destroy,
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},
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.get_directory_flag = _get_directory_flag,
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.get_request_id = _get_request_id,
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.get_delimiter = _get_delimiter,
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.get_pathname = _get_pathname,
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},
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.vendor_id = PEN_TCG,
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.type = TCG_PTS_REQ_FILE_MEAS,
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.value = chunk_clone(data),
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);
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return &this->public.pa_tnc_attribute;
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}
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