Annotation of embedaddon/strongswan/src/libimcv/ietf/ietf_attr_assess_result.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2012-2014 Andreas Steffen
! 3: * HSR Hochschule fuer Technik Rapperswil
! 4: *
! 5: * This program is free software; you can redistribute it and/or modify it
! 6: * under the terms of the GNU General Public License as published by the
! 7: * Free Software Foundation; either version 2 of the License, or (at your
! 8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
! 9: *
! 10: * This program is distributed in the hope that it will be useful, but
! 11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
! 13: * for more details.
! 14: */
! 15:
! 16: #include "ietf_attr_assess_result.h"
! 17:
! 18: #include <pa_tnc/pa_tnc_msg.h>
! 19: #include <bio/bio_writer.h>
! 20: #include <bio/bio_reader.h>
! 21: #include <utils/debug.h>
! 22:
! 23: typedef struct private_ietf_attr_assess_result_t private_ietf_attr_assess_result_t;
! 24:
! 25: /**
! 26: * PA-TNC Product Information type (see section 4.2.2 of RFC 5792)
! 27: *
! 28: * 1 2 3
! 29: * 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
! 30: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 31: * | Assessment Result |
! 32: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 33: */
! 34:
! 35: #define ASSESS_RESULT_SIZE 4
! 36:
! 37: /**
! 38: * Private data of an ietf_attr_assess_result_t object.
! 39: */
! 40: struct private_ietf_attr_assess_result_t {
! 41:
! 42: /**
! 43: * Public members of ietf_attr_assess_result_t
! 44: */
! 45: ietf_attr_assess_result_t public;
! 46:
! 47: /**
! 48: * Vendor-specific attribute type
! 49: */
! 50: pen_type_t type;
! 51:
! 52: /**
! 53: * Length of attribute value
! 54: */
! 55: size_t length;
! 56:
! 57: /**
! 58: * Attribute value or segment
! 59: */
! 60: chunk_t value;
! 61:
! 62: /**
! 63: * Noskip flag
! 64: */
! 65: bool noskip_flag;
! 66:
! 67: /**
! 68: * Assessment Result
! 69: */
! 70: uint32_t result;
! 71:
! 72: /**
! 73: * Reference count
! 74: */
! 75: refcount_t ref;
! 76: };
! 77:
! 78: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
! 79: private_ietf_attr_assess_result_t *this)
! 80: {
! 81: return this->type;
! 82: }
! 83:
! 84: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 85: private_ietf_attr_assess_result_t *this)
! 86: {
! 87: return this->value;
! 88: }
! 89:
! 90: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 91: private_ietf_attr_assess_result_t *this)
! 92: {
! 93: return this->noskip_flag;
! 94: }
! 95:
! 96: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 97: private_ietf_attr_assess_result_t *this, bool noskip)
! 98: {
! 99: this->noskip_flag = noskip;
! 100: }
! 101:
! 102: METHOD(pa_tnc_attr_t, build, void,
! 103: private_ietf_attr_assess_result_t *this)
! 104: {
! 105: bio_writer_t *writer;
! 106:
! 107: if (this->value.ptr)
! 108: {
! 109: return;
! 110: }
! 111:
! 112: writer = bio_writer_create(ASSESS_RESULT_SIZE);
! 113: writer->write_uint32(writer, this->result);
! 114: this->value = writer->extract_buf(writer);
! 115: this->length = this->value.len;
! 116: writer->destroy(writer);
! 117: }
! 118:
! 119: METHOD(pa_tnc_attr_t, process, status_t,
! 120: private_ietf_attr_assess_result_t *this, uint32_t *offset)
! 121: {
! 122: bio_reader_t *reader;
! 123:
! 124: *offset = 0;
! 125:
! 126: if (this->value.len < this->length)
! 127: {
! 128: return NEED_MORE;
! 129: }
! 130: if (this->value.len < ASSESS_RESULT_SIZE)
! 131: {
! 132: DBG1(DBG_TNC, "insufficient data for IETF assessment result");
! 133: return FAILED;
! 134: }
! 135: reader = bio_reader_create(this->value);
! 136: reader->read_uint32(reader, &this->result);
! 137: reader->destroy(reader);
! 138:
! 139: return SUCCESS;
! 140: }
! 141:
! 142: METHOD(pa_tnc_attr_t, add_segment, void,
! 143: private_ietf_attr_assess_result_t *this, chunk_t segment)
! 144: {
! 145: this->value = chunk_cat("mc", this->value, segment);
! 146: }
! 147:
! 148: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 149: private_ietf_attr_assess_result_t *this)
! 150: {
! 151: ref_get(&this->ref);
! 152: return &this->public.pa_tnc_attribute;
! 153: }
! 154:
! 155: METHOD(pa_tnc_attr_t, destroy, void,
! 156: private_ietf_attr_assess_result_t *this)
! 157: {
! 158: if (ref_put(&this->ref))
! 159: {
! 160: free(this->value.ptr);
! 161: free(this);
! 162: }
! 163: }
! 164:
! 165: METHOD(ietf_attr_assess_result_t, get_result, uint32_t,
! 166: private_ietf_attr_assess_result_t *this)
! 167: {
! 168: return this->result;
! 169: }
! 170:
! 171: /**
! 172: * Described in header.
! 173: */
! 174: pa_tnc_attr_t *ietf_attr_assess_result_create(uint32_t result)
! 175: {
! 176: private_ietf_attr_assess_result_t *this;
! 177:
! 178: INIT(this,
! 179: .public = {
! 180: .pa_tnc_attribute = {
! 181: .get_type = _get_type,
! 182: .get_value = _get_value,
! 183: .get_noskip_flag = _get_noskip_flag,
! 184: .set_noskip_flag = _set_noskip_flag,
! 185: .build = _build,
! 186: .process = _process,
! 187: .add_segment = _add_segment,
! 188: .get_ref = _get_ref,
! 189: .destroy = _destroy,
! 190: },
! 191: .get_result = _get_result,
! 192: },
! 193: .type = { PEN_IETF, IETF_ATTR_ASSESSMENT_RESULT },
! 194: .result = result,
! 195: .ref = 1,
! 196: );
! 197:
! 198: return &this->public.pa_tnc_attribute;
! 199: }
! 200:
! 201: /**
! 202: * Described in header.
! 203: */
! 204: pa_tnc_attr_t *ietf_attr_assess_result_create_from_data(size_t length,
! 205: chunk_t data)
! 206: {
! 207: private_ietf_attr_assess_result_t *this;
! 208:
! 209: INIT(this,
! 210: .public = {
! 211: .pa_tnc_attribute = {
! 212: .get_type = _get_type,
! 213: .get_value = _get_value,
! 214: .get_noskip_flag = _get_noskip_flag,
! 215: .set_noskip_flag = _set_noskip_flag,
! 216: .build = _build,
! 217: .process = _process,
! 218: .add_segment = _add_segment,
! 219: .get_ref = _get_ref,
! 220: .destroy = _destroy,
! 221: },
! 222: .get_result = _get_result,
! 223: },
! 224: .type = { PEN_IETF, IETF_ATTR_ASSESSMENT_RESULT },
! 225: .length = length,
! 226: .value = chunk_clone(data),
! 227: .ref = 1,
! 228: );
! 229:
! 230: return &this->public.pa_tnc_attribute;
! 231: }
! 232:
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