Annotation of embedaddon/strongswan/src/libimcv/tcg/pts/tcg_pts_attr_tpm_version_info.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2011-2012 Sansar Choinyambuu
! 3: * Copyright (C) 2011-2014 Andreas Steffen
! 4: * HSR Hochschule fuer Technik Rapperswil
! 5: *
! 6: * This program is free software; you can redistribute it and/or modify it
! 7: * under the terms of the GNU General Public License as published by the
! 8: * Free Software Foundation; either version 2 of the License, or (at your
! 9: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
! 10: *
! 11: * This program is distributed in the hope that it will be useful, but
! 12: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 13: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
! 14: * for more details.
! 15: */
! 16:
! 17: #include "tcg_pts_attr_tpm_version_info.h"
! 18:
! 19: #include <pa_tnc/pa_tnc_msg.h>
! 20: #include <bio/bio_writer.h>
! 21: #include <bio/bio_reader.h>
! 22: #include <utils/debug.h>
! 23:
! 24: typedef struct private_tcg_pts_attr_tpm_version_info_t private_tcg_pts_attr_tpm_version_info_t;
! 25:
! 26: /**
! 27: * TPM Version Information
! 28: * see section 3.11 of PTS Protocol: Binding to TNC IF-M Specification
! 29: *
! 30: * 1 2 3
! 31: * 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
! 32: *
! 33: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 34: * | TPM Version Information (Variable Length) |
! 35: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 36: *
! 37: * see TPM Structure Specification Part 2, section 21.6: TPM_CAP_VERSION_INFO
! 38: */
! 39:
! 40: #define PTS_TPM_VER_INFO_SIZE 4
! 41:
! 42: /**
! 43: * Private data of an tcg_pts_attr_tpm_version_info_t object.
! 44: */
! 45: struct private_tcg_pts_attr_tpm_version_info_t {
! 46:
! 47: /**
! 48: * Public members of tcg_pts_attr_tpm_version_info_t
! 49: */
! 50: tcg_pts_attr_tpm_version_info_t public;
! 51:
! 52: /**
! 53: * Vendor-specific attribute type
! 54: */
! 55: pen_type_t type;
! 56:
! 57: /**
! 58: * Length of attribute value
! 59: */
! 60: size_t length;
! 61:
! 62: /**
! 63: * Attribute value or segment
! 64: */
! 65: chunk_t value;
! 66:
! 67: /**
! 68: * Noskip flag
! 69: */
! 70: bool noskip_flag;
! 71:
! 72: /**
! 73: * TPM Version Information
! 74: */
! 75: chunk_t tpm_version_info;
! 76:
! 77: /**
! 78: * Reference count
! 79: */
! 80: refcount_t ref;
! 81: };
! 82:
! 83: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
! 84: private_tcg_pts_attr_tpm_version_info_t *this)
! 85: {
! 86: return this->type;
! 87: }
! 88:
! 89: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 90: private_tcg_pts_attr_tpm_version_info_t *this)
! 91: {
! 92: return this->value;
! 93: }
! 94:
! 95: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 96: private_tcg_pts_attr_tpm_version_info_t *this)
! 97: {
! 98: return this->noskip_flag;
! 99: }
! 100:
! 101: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 102: private_tcg_pts_attr_tpm_version_info_t *this, bool noskip)
! 103: {
! 104: this->noskip_flag = noskip;
! 105: }
! 106:
! 107: METHOD(pa_tnc_attr_t, build, void,
! 108: private_tcg_pts_attr_tpm_version_info_t *this)
! 109: {
! 110: bio_writer_t *writer;
! 111:
! 112: if (this->value.ptr)
! 113: {
! 114: return;
! 115: }
! 116: writer = bio_writer_create(PTS_TPM_VER_INFO_SIZE);
! 117: writer->write_data(writer, this->tpm_version_info);
! 118:
! 119: this->value = writer->extract_buf(writer);
! 120: this->length = this->value.len;
! 121: writer->destroy(writer);
! 122: }
! 123:
! 124: METHOD(pa_tnc_attr_t, process, status_t,
! 125: private_tcg_pts_attr_tpm_version_info_t *this, uint32_t *offset)
! 126: {
! 127: bio_reader_t *reader;
! 128:
! 129: *offset = 0;
! 130:
! 131: if (this->value.len < this->length)
! 132: {
! 133: return NEED_MORE;
! 134: }
! 135: if (this->value.len < PTS_TPM_VER_INFO_SIZE)
! 136: {
! 137: DBG1(DBG_TNC, "insufficient data for TPM Version Information");
! 138: return FAILED;
! 139: }
! 140: reader = bio_reader_create(this->value);
! 141: reader->read_data (reader, this->value.len, &this->tpm_version_info);
! 142: this->tpm_version_info = chunk_clone(this->tpm_version_info);
! 143: reader->destroy(reader);
! 144:
! 145: return SUCCESS;
! 146: }
! 147:
! 148: METHOD(pa_tnc_attr_t, add_segment, void,
! 149: private_tcg_pts_attr_tpm_version_info_t *this, chunk_t segment)
! 150: {
! 151: this->value = chunk_cat("mc", this->value, segment);
! 152: }
! 153:
! 154: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 155: private_tcg_pts_attr_tpm_version_info_t *this)
! 156: {
! 157: ref_get(&this->ref);
! 158: return &this->public.pa_tnc_attribute;
! 159: }
! 160:
! 161: METHOD(pa_tnc_attr_t, destroy, void,
! 162: private_tcg_pts_attr_tpm_version_info_t *this)
! 163: {
! 164: if (ref_put(&this->ref))
! 165: {
! 166: free(this->value.ptr);
! 167: free(this->tpm_version_info.ptr);
! 168: free(this);
! 169: }
! 170: }
! 171:
! 172: METHOD(tcg_pts_attr_tpm_version_info_t, get_tpm_version_info, chunk_t,
! 173: private_tcg_pts_attr_tpm_version_info_t *this)
! 174: {
! 175: return this->tpm_version_info;
! 176: }
! 177:
! 178: METHOD(tcg_pts_attr_tpm_version_info_t, set_tpm_version_info, void,
! 179: private_tcg_pts_attr_tpm_version_info_t *this,
! 180: chunk_t tpm_version_info)
! 181: {
! 182: this->tpm_version_info = tpm_version_info;
! 183: }
! 184:
! 185: /**
! 186: * Described in header.
! 187: */
! 188: pa_tnc_attr_t *tcg_pts_attr_tpm_version_info_create(chunk_t tpm_version_info)
! 189: {
! 190: private_tcg_pts_attr_tpm_version_info_t *this;
! 191:
! 192: INIT(this,
! 193: .public = {
! 194: .pa_tnc_attribute = {
! 195: .get_type = _get_type,
! 196: .get_value = _get_value,
! 197: .get_noskip_flag = _get_noskip_flag,
! 198: .set_noskip_flag = _set_noskip_flag,
! 199: .build = _build,
! 200: .process = _process,
! 201: .add_segment = _add_segment,
! 202: .get_ref = _get_ref,
! 203: .destroy = _destroy,
! 204: },
! 205: .get_tpm_version_info = _get_tpm_version_info,
! 206: .set_tpm_version_info = _set_tpm_version_info,
! 207: },
! 208: .type = { PEN_TCG, TCG_PTS_TPM_VERSION_INFO },
! 209: .tpm_version_info = chunk_clone(tpm_version_info),
! 210: .ref = 1,
! 211: );
! 212:
! 213: return &this->public.pa_tnc_attribute;
! 214: }
! 215:
! 216:
! 217: /**
! 218: * Described in header.
! 219: */
! 220: pa_tnc_attr_t *tcg_pts_attr_tpm_version_info_create_from_data(size_t length,
! 221: chunk_t data)
! 222: {
! 223: private_tcg_pts_attr_tpm_version_info_t *this;
! 224:
! 225: INIT(this,
! 226: .public = {
! 227: .pa_tnc_attribute = {
! 228: .get_type = _get_type,
! 229: .get_value = _get_value,
! 230: .get_noskip_flag = _get_noskip_flag,
! 231: .set_noskip_flag = _set_noskip_flag,
! 232: .build = _build,
! 233: .process = _process,
! 234: .add_segment = _add_segment,
! 235: .get_ref = _get_ref,
! 236: .destroy = _destroy,
! 237: },
! 238: .get_tpm_version_info = _get_tpm_version_info,
! 239: .set_tpm_version_info = _set_tpm_version_info,
! 240: },
! 241: .type = { PEN_TCG, TCG_PTS_TPM_VERSION_INFO },
! 242: .length = length,
! 243: .value = chunk_clone(data),
! 244: .ref = 1,
! 245: );
! 246:
! 247: return &this->public.pa_tnc_attribute;
! 248: }
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