Annotation of embedaddon/strongswan/src/libimcv/ietf/ietf_attr_product_info.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2011-2014 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_product_info.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_product_info_t private_ietf_attr_product_info_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: * | Product Vendor ID | Product ID |
! 32: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 33: * | Product ID | Product Name (Variable Length) |
! 34: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 35: */
! 36:
! 37: #define PRODUCT_INFO_MIN_SIZE 5
! 38:
! 39: /**
! 40: * Private data of an ietf_attr_product_info_t object.
! 41: */
! 42: struct private_ietf_attr_product_info_t {
! 43:
! 44: /**
! 45: * Public members of ietf_attr_product_info_t
! 46: */
! 47: ietf_attr_product_info_t public;
! 48:
! 49: /**
! 50: * Vendor-specific attribute type
! 51: */
! 52: pen_type_t type;
! 53:
! 54: /**
! 55: * Length of attribute value
! 56: */
! 57: size_t length;
! 58:
! 59: /**
! 60: * Attribute value or segment
! 61: */
! 62: chunk_t value;
! 63:
! 64: /**
! 65: * Noskip flag
! 66: */
! 67: bool noskip_flag;
! 68:
! 69: /**
! 70: * Product vendor ID
! 71: */
! 72: pen_t product_vendor_id;
! 73:
! 74: /**
! 75: * Product ID
! 76: */
! 77: uint16_t product_id;
! 78:
! 79: /**
! 80: * Product Name
! 81: */
! 82: chunk_t product_name;
! 83:
! 84: /**
! 85: * Reference count
! 86: */
! 87: refcount_t ref;
! 88: };
! 89:
! 90: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
! 91: private_ietf_attr_product_info_t *this)
! 92: {
! 93: return this->type;
! 94: }
! 95:
! 96: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 97: private_ietf_attr_product_info_t *this)
! 98: {
! 99: return this->value;
! 100: }
! 101:
! 102: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 103: private_ietf_attr_product_info_t *this)
! 104: {
! 105: return this->noskip_flag;
! 106: }
! 107:
! 108: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 109: private_ietf_attr_product_info_t *this, bool noskip)
! 110: {
! 111: this->noskip_flag = noskip;
! 112: }
! 113:
! 114: METHOD(pa_tnc_attr_t, build, void,
! 115: private_ietf_attr_product_info_t *this)
! 116: {
! 117: bio_writer_t *writer;
! 118:
! 119: if (this->value.ptr)
! 120: {
! 121: return;
! 122: }
! 123: writer = bio_writer_create(PRODUCT_INFO_MIN_SIZE);
! 124: writer->write_uint24(writer, this->product_vendor_id);
! 125: writer->write_uint16(writer, this->product_id);
! 126: writer->write_data (writer, this->product_name);
! 127:
! 128: this->value = writer->extract_buf(writer);
! 129: this->length = this->value.len;
! 130: writer->destroy(writer);
! 131: }
! 132:
! 133: METHOD(pa_tnc_attr_t, process, status_t,
! 134: private_ietf_attr_product_info_t *this, uint32_t *offset)
! 135: {
! 136: bio_reader_t *reader;
! 137: chunk_t product_name;
! 138:
! 139: *offset = 0;
! 140:
! 141: if (this->value.len < this->length)
! 142: {
! 143: return NEED_MORE;
! 144: }
! 145: if (this->value.len < PRODUCT_INFO_MIN_SIZE)
! 146: {
! 147: DBG1(DBG_TNC, "insufficient data for IETF product information");
! 148: return FAILED;
! 149: }
! 150: reader = bio_reader_create(this->value);
! 151: reader->read_uint24(reader, &this->product_vendor_id);
! 152: reader->read_uint16(reader, &this->product_id);
! 153: reader->read_data (reader, reader->remaining(reader), &product_name);
! 154: reader->destroy(reader);
! 155:
! 156: if (!this->product_vendor_id && this->product_id)
! 157: {
! 158: DBG1(DBG_TNC, "IETF product information vendor ID is 0 "
! 159: "but product ID is not 0");
! 160: *offset = 3;
! 161: return FAILED;
! 162: }
! 163: this->product_name = chunk_clone(product_name);
! 164:
! 165: return SUCCESS;
! 166: }
! 167:
! 168: METHOD(pa_tnc_attr_t, add_segment, void,
! 169: private_ietf_attr_product_info_t *this, chunk_t segment)
! 170: {
! 171: this->value = chunk_cat("mc", this->value, segment);
! 172: }
! 173:
! 174: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 175: private_ietf_attr_product_info_t *this)
! 176: {
! 177: ref_get(&this->ref);
! 178: return &this->public.pa_tnc_attribute;
! 179: }
! 180:
! 181: METHOD(pa_tnc_attr_t, destroy, void,
! 182: private_ietf_attr_product_info_t *this)
! 183: {
! 184: if (ref_put(&this->ref))
! 185: {
! 186: free(this->product_name.ptr);
! 187: free(this->value.ptr);
! 188: free(this);
! 189: }
! 190: }
! 191:
! 192: METHOD(ietf_attr_product_info_t, get_info, chunk_t,
! 193: private_ietf_attr_product_info_t *this, pen_t *vendor_id, uint16_t *id)
! 194: {
! 195: if (vendor_id)
! 196: {
! 197: *vendor_id = this->product_vendor_id;
! 198: }
! 199: if (id)
! 200: {
! 201: *id = this->product_id;
! 202: }
! 203: return this->product_name;
! 204: }
! 205:
! 206: /**
! 207: * Described in header.
! 208: */
! 209: pa_tnc_attr_t *ietf_attr_product_info_create(pen_t vendor_id, uint16_t id,
! 210: chunk_t name)
! 211: {
! 212: private_ietf_attr_product_info_t *this;
! 213:
! 214: INIT(this,
! 215: .public = {
! 216: .pa_tnc_attribute = {
! 217: .get_type = _get_type,
! 218: .get_value = _get_value,
! 219: .get_noskip_flag = _get_noskip_flag,
! 220: .set_noskip_flag = _set_noskip_flag,
! 221: .build = _build,
! 222: .process = _process,
! 223: .add_segment = _add_segment,
! 224: .get_ref = _get_ref,
! 225: .destroy = _destroy,
! 226: },
! 227: .get_info = _get_info,
! 228: },
! 229: .type = { PEN_IETF, IETF_ATTR_PRODUCT_INFORMATION },
! 230: .product_vendor_id = vendor_id,
! 231: .product_id = id,
! 232: .product_name = chunk_clone(name),
! 233: .ref = 1,
! 234: );
! 235:
! 236: return &this->public.pa_tnc_attribute;
! 237: }
! 238:
! 239: /**
! 240: * Described in header.
! 241: */
! 242: pa_tnc_attr_t *ietf_attr_product_info_create_from_data(size_t length,
! 243: chunk_t data)
! 244: {
! 245: private_ietf_attr_product_info_t *this;
! 246:
! 247: INIT(this,
! 248: .public = {
! 249: .pa_tnc_attribute = {
! 250: .get_type = _get_type,
! 251: .get_value = _get_value,
! 252: .get_noskip_flag = _get_noskip_flag,
! 253: .set_noskip_flag = _set_noskip_flag,
! 254: .build = _build,
! 255: .process = _process,
! 256: .add_segment = _add_segment,
! 257: .get_ref = _get_ref,
! 258: .destroy = _destroy,
! 259: },
! 260: .get_info = _get_info,
! 261: },
! 262: .type = { PEN_IETF, IETF_ATTR_PRODUCT_INFORMATION },
! 263: .length = length,
! 264: .value = chunk_clone(data),
! 265: .ref = 1,
! 266: );
! 267:
! 268: return &this->public.pa_tnc_attribute;
! 269: }
! 270:
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