Annotation of embedaddon/strongswan/src/libimcv/tcg/pts/tcg_pts_attr_proto_caps.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_proto_caps.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_proto_caps_t private_tcg_pts_attr_proto_caps_t;
! 25:
! 26: /**
! 27: * PTS Protocol Capabilities
! 28: * see section 3.7 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: * | Reserved |C|V|D|T|X|
! 34: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 35: *
! 36: */
! 37:
! 38: #define PTS_PROTO_CAPS_SIZE 4
! 39: #define PTS_PROTO_CAPS_RESERVED 0x0000
! 40:
! 41: /**
! 42: * Private data of an tcg_pts_attr_proto_caps_t object.
! 43: */
! 44: struct private_tcg_pts_attr_proto_caps_t {
! 45:
! 46: /**
! 47: * Public members of tcg_pts_attr_proto_caps_t
! 48: */
! 49: tcg_pts_attr_proto_caps_t public;
! 50:
! 51: /**
! 52: * Vendor-specific attribute type
! 53: */
! 54: pen_type_t type;
! 55:
! 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: * Set of flags
! 74: */
! 75: pts_proto_caps_flag_t flags;
! 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_proto_caps_t *this)
! 85: {
! 86: return this->type;
! 87: }
! 88:
! 89: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 90: private_tcg_pts_attr_proto_caps_t *this)
! 91: {
! 92: return this->value;
! 93: }
! 94:
! 95: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 96: private_tcg_pts_attr_proto_caps_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_proto_caps_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_proto_caps_t *this)
! 109: {
! 110: bio_writer_t *writer;
! 111:
! 112: if (this->value.ptr)
! 113: {
! 114: return;
! 115: }
! 116: writer = bio_writer_create(PTS_PROTO_CAPS_SIZE);
! 117: writer->write_uint16(writer, PTS_PROTO_CAPS_RESERVED);
! 118: writer->write_uint16(writer, this->flags);
! 119:
! 120: this->value = writer->extract_buf(writer);
! 121: this->length = this->value.len;
! 122: writer->destroy(writer);
! 123: }
! 124:
! 125: METHOD(pa_tnc_attr_t, process, status_t,
! 126: private_tcg_pts_attr_proto_caps_t *this, uint32_t *offset)
! 127: {
! 128: bio_reader_t *reader;
! 129: uint16_t reserved, flags;
! 130:
! 131: *offset = 0;
! 132:
! 133: if (this->value.len < this->length)
! 134: {
! 135: return NEED_MORE;
! 136: }
! 137: if (this->value.len < PTS_PROTO_CAPS_SIZE)
! 138: {
! 139: DBG1(DBG_TNC, "insufficient data for PTS Protocol Capabilities");
! 140: return FAILED;
! 141: }
! 142: reader = bio_reader_create(this->value);
! 143: reader->read_uint16(reader, &reserved);
! 144: reader->read_uint16(reader, &flags);
! 145: this->flags = flags;
! 146: reader->destroy(reader);
! 147:
! 148: return SUCCESS;
! 149: }
! 150:
! 151: METHOD(pa_tnc_attr_t, add_segment, void,
! 152: private_tcg_pts_attr_proto_caps_t *this, chunk_t segment)
! 153: {
! 154: this->value = chunk_cat("mc", this->value, segment);
! 155: }
! 156:
! 157: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 158: private_tcg_pts_attr_proto_caps_t *this)
! 159: {
! 160: ref_get(&this->ref);
! 161: return &this->public.pa_tnc_attribute;
! 162: }
! 163:
! 164: METHOD(pa_tnc_attr_t, destroy, void,
! 165: private_tcg_pts_attr_proto_caps_t *this)
! 166: {
! 167: if (ref_put(&this->ref))
! 168: {
! 169: free(this->value.ptr);
! 170: free(this);
! 171: }
! 172: }
! 173:
! 174: METHOD(tcg_pts_attr_proto_caps_t, get_flags, pts_proto_caps_flag_t,
! 175: private_tcg_pts_attr_proto_caps_t *this)
! 176: {
! 177: return this->flags;
! 178: }
! 179:
! 180: /**
! 181: * Described in header.
! 182: */
! 183: pa_tnc_attr_t *tcg_pts_attr_proto_caps_create(pts_proto_caps_flag_t flags,
! 184: bool request)
! 185: {
! 186: private_tcg_pts_attr_proto_caps_t *this;
! 187:
! 188: INIT(this,
! 189: .public = {
! 190: .pa_tnc_attribute = {
! 191: .get_type = _get_type,
! 192: .get_value = _get_value,
! 193: .get_noskip_flag = _get_noskip_flag,
! 194: .set_noskip_flag = _set_noskip_flag,
! 195: .build = _build,
! 196: .process = _process,
! 197: .add_segment = _add_segment,
! 198: .get_ref = _get_ref,
! 199: .destroy = _destroy,
! 200: },
! 201: .get_flags = _get_flags,
! 202: },
! 203: .type = { PEN_TCG,
! 204: request ? TCG_PTS_REQ_PROTO_CAPS : TCG_PTS_PROTO_CAPS },
! 205: .flags = flags,
! 206: .ref = 1,
! 207: );
! 208:
! 209: return &this->public.pa_tnc_attribute;
! 210: }
! 211:
! 212: /**
! 213: * Described in header.
! 214: */
! 215: pa_tnc_attr_t *tcg_pts_attr_proto_caps_create_from_data(size_t length,
! 216: chunk_t data,
! 217: bool request)
! 218: {
! 219: private_tcg_pts_attr_proto_caps_t *this;
! 220:
! 221: INIT(this,
! 222: .public = {
! 223: .pa_tnc_attribute = {
! 224: .get_type = _get_type,
! 225: .get_value = _get_value,
! 226: .get_noskip_flag = _get_noskip_flag,
! 227: .set_noskip_flag = _set_noskip_flag,
! 228: .build = _build,
! 229: .process = _process,
! 230: .add_segment = _add_segment,
! 231: .get_ref = _get_ref,
! 232: .destroy = _destroy,
! 233: },
! 234: .get_flags = _get_flags,
! 235: },
! 236: .type = { PEN_TCG,
! 237: request ? TCG_PTS_REQ_PROTO_CAPS : TCG_PTS_PROTO_CAPS },
! 238: .length = length,
! 239: .value = chunk_clone(data),
! 240: .ref = 1,
! 241: );
! 242:
! 243: return &this->public.pa_tnc_attribute;
! 244: }
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