diff options
Diffstat (limited to 'src/libpts/tcg/tcg_pts_attr_req_file_meas.c')
| -rw-r--r-- | src/libpts/tcg/tcg_pts_attr_req_file_meas.c | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/src/libpts/tcg/tcg_pts_attr_req_file_meas.c b/src/libpts/tcg/tcg_pts_attr_req_file_meas.c new file mode 100644 index 000000000..17781f745 --- /dev/null +++ b/src/libpts/tcg/tcg_pts_attr_req_file_meas.c @@ -0,0 +1,303 @@ +/* + * Copyright (C) 2011 Sansar Choinyambuu + * 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 "tcg_pts_attr_req_file_meas.h" + +#include <pa_tnc/pa_tnc_msg.h> +#include <bio/bio_writer.h> +#include <bio/bio_reader.h> +#include <debug.h> + +typedef struct private_tcg_pts_attr_req_file_meas_t private_tcg_pts_attr_req_file_meas_t; + +/** + * Request File Measurement + * see section 3.19.1 of PTS Protocol: Binding to TNC IF-M Specification + * + * 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 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Flags | Reserved | Request ID | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Delimiter | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * ~ Fully Qualified File Pathname (Variable Length) ~ + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +#define PTS_REQ_FILE_MEAS_SIZE 8 +#define PTS_REQ_FILE_MEAS_RESERVED 0x00 +#define PTS_REQ_FILE_MEAS_NO_FLAGS 0x00 + +#define DIRECTORY_CONTENTS_FLAG (1<<7) + +/** + * Private data of an tcg_pts_attr_req_file_meas_t object. + */ +struct private_tcg_pts_attr_req_file_meas_t { + + /** + * Public members of tcg_pts_attr_req_file_meas_t + */ + tcg_pts_attr_req_file_meas_t public; + + /** + * Attribute vendor ID + */ + pen_t vendor_id; + + /** + * Attribute type + */ + u_int32_t type; + + /** + * Attribute value + */ + chunk_t value; + + /** + * Noskip flag + */ + bool noskip_flag; + + /** + * Directory Contents flag + */ + bool directory_flag; + + /** + * Request ID + */ + u_int16_t request_id; + + /** + * UTF8 Encoding of Delimiter Character + */ + u_int32_t delimiter; + + /** + * Fully Qualified File Pathname + */ + char *pathname; + + /** + * Reference count + */ + refcount_t ref; +}; + +METHOD(pa_tnc_attr_t, get_vendor_id, pen_t, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->vendor_id; +} + +METHOD(pa_tnc_attr_t, get_type, u_int32_t, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->type; +} + +METHOD(pa_tnc_attr_t, get_value, chunk_t, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->value; +} + +METHOD(pa_tnc_attr_t, get_noskip_flag, bool, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->noskip_flag; +} + +METHOD(pa_tnc_attr_t, set_noskip_flag,void, + private_tcg_pts_attr_req_file_meas_t *this, bool noskip) +{ + this->noskip_flag = noskip; +} + +METHOD(pa_tnc_attr_t, build, void, + private_tcg_pts_attr_req_file_meas_t *this) +{ + u_int8_t flags = PTS_REQ_FILE_MEAS_NO_FLAGS; + chunk_t pathname; + bio_writer_t *writer; + + if (this->directory_flag) + { + flags |= DIRECTORY_CONTENTS_FLAG; + } + pathname = chunk_create(this->pathname, strlen(this->pathname)); + + writer = bio_writer_create(PTS_REQ_FILE_MEAS_SIZE); + writer->write_uint8 (writer, flags); + writer->write_uint8 (writer, PTS_REQ_FILE_MEAS_RESERVED); + writer->write_uint16(writer, this->request_id); + writer->write_uint32(writer, this->delimiter); + writer->write_data (writer, pathname); + this->value = chunk_clone(writer->get_buf(writer)); + writer->destroy(writer); +} + +METHOD(pa_tnc_attr_t, process, status_t, + private_tcg_pts_attr_req_file_meas_t *this, u_int32_t *offset) +{ + bio_reader_t *reader; + u_int8_t flags; + u_int8_t reserved; + chunk_t pathname; + + if (this->value.len < PTS_REQ_FILE_MEAS_SIZE) + { + DBG1(DBG_TNC, "insufficient data for Request File Measurement"); + *offset = 0; + return FAILED; + } + + reader = bio_reader_create(this->value); + reader->read_uint8 (reader, &flags); + reader->read_uint8 (reader, &reserved); + reader->read_uint16(reader, &this->request_id); + reader->read_uint32(reader, &this->delimiter); + reader->read_data (reader, reader->remaining(reader), &pathname); + + this->directory_flag = (flags & DIRECTORY_CONTENTS_FLAG) != + PTS_REQ_FILE_MEAS_NO_FLAGS; + + this->pathname = malloc(pathname.len + 1); + memcpy(this->pathname, pathname.ptr, pathname.len); + this->pathname[pathname.len] = '\0'; + + reader->destroy(reader); + return SUCCESS; +} + +METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*, + private_tcg_pts_attr_req_file_meas_t *this) +{ + ref_get(&this->ref); + return &this->public.pa_tnc_attribute; +} + +METHOD(pa_tnc_attr_t, destroy, void, + private_tcg_pts_attr_req_file_meas_t *this) +{ + if (ref_put(&this->ref)) + { + free(this->pathname); + free(this->value.ptr); + free(this); + } +} + +METHOD(tcg_pts_attr_req_file_meas_t, get_directory_flag, bool, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->directory_flag; +} + +METHOD(tcg_pts_attr_req_file_meas_t, get_request_id, u_int16_t, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->request_id; +} + +METHOD(tcg_pts_attr_req_file_meas_t, get_delimiter, u_int32_t, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->delimiter; +} + +METHOD(tcg_pts_attr_req_file_meas_t, get_pathname, char*, + private_tcg_pts_attr_req_file_meas_t *this) +{ + return this->pathname; +} + +/** + * Described in header. + */ +pa_tnc_attr_t *tcg_pts_attr_req_file_meas_create(bool directory_flag, + u_int16_t request_id, + u_int32_t delimiter, + char *pathname) +{ + private_tcg_pts_attr_req_file_meas_t *this; + + INIT(this, + .public = { + .pa_tnc_attribute = { + .get_vendor_id = _get_vendor_id, + .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_directory_flag = _get_directory_flag, + .get_request_id = _get_request_id, + .get_delimiter = _get_delimiter, + .get_pathname = _get_pathname, + }, + .vendor_id = PEN_TCG, + .type = TCG_PTS_REQ_FILE_MEAS, + .directory_flag = directory_flag, + .request_id = request_id, + .delimiter = delimiter, + .pathname = strdup(pathname), + .ref = 1, + ); + + return &this->public.pa_tnc_attribute; +} + + +/** + * Described in header. + */ +pa_tnc_attr_t *tcg_pts_attr_req_file_meas_create_from_data(chunk_t data) +{ + private_tcg_pts_attr_req_file_meas_t *this; + + INIT(this, + .public = { + .pa_tnc_attribute = { + .get_vendor_id = _get_vendor_id, + .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_directory_flag = _get_directory_flag, + .get_request_id = _get_request_id, + .get_delimiter = _get_delimiter, + .get_pathname = _get_pathname, + }, + .vendor_id = PEN_TCG, + .type = TCG_PTS_REQ_FILE_MEAS, + .value = chunk_clone(data), + .ref = 1, + ); + + return &this->public.pa_tnc_attribute; +} |