Annotation of embedaddon/strongswan/src/libimcv/ietf/ietf_attr_string_version.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_string_version.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_string_version_t private_ietf_attr_string_version_t;
! 24:
! 25: /**
! 26: * PA-TNC String Version type (see section 4.2.4 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: * | Version Len | Product Version Number (Variable Length) |
! 32: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 33: * | Build Num Len | Internal Build Number (Variable Length) |
! 34: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 35: * | Config. Len | Configuration Version Number (Variable Length)|
! 36: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 37: */
! 38:
! 39: #define STRING_VERSION_MIN_SIZE 3
! 40:
! 41: /**
! 42: * Private data of an ietf_attr_string_version_t object.
! 43: */
! 44: struct private_ietf_attr_string_version_t {
! 45:
! 46: /**
! 47: * Public members of ietf_attr_string_version_t
! 48: */
! 49: ietf_attr_string_version_t public;
! 50:
! 51: /**
! 52: * Vendor-specific attribute type
! 53: */
! 54: pen_type_t type;
! 55:
! 56: /**
! 57: * Length of attribute value
! 58: */
! 59: size_t length;
! 60:
! 61: /**
! 62: * Attribute value or segment
! 63: */
! 64: chunk_t value;
! 65:
! 66: /**
! 67: * Noskip flag
! 68: */
! 69: bool noskip_flag;
! 70:
! 71: /**
! 72: * Product Version Number
! 73: */
! 74: chunk_t version;
! 75:
! 76: /**
! 77: * Internal Build Number
! 78: */
! 79: chunk_t build;
! 80:
! 81: /**
! 82: * Configuration Version Number
! 83: */
! 84: chunk_t config;
! 85:
! 86: /**
! 87: * Reference count
! 88: */
! 89: refcount_t ref;
! 90: };
! 91:
! 92: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
! 93: private_ietf_attr_string_version_t *this)
! 94: {
! 95: return this->type;
! 96: }
! 97:
! 98: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 99: private_ietf_attr_string_version_t *this)
! 100: {
! 101: return this->value;
! 102: }
! 103:
! 104: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 105: private_ietf_attr_string_version_t *this)
! 106: {
! 107: return this->noskip_flag;
! 108: }
! 109:
! 110: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 111: private_ietf_attr_string_version_t *this, bool noskip)
! 112: {
! 113: this->noskip_flag = noskip;
! 114: }
! 115:
! 116: METHOD(pa_tnc_attr_t, build, void,
! 117: private_ietf_attr_string_version_t *this)
! 118: {
! 119: bio_writer_t *writer;
! 120:
! 121: if (this->value.ptr)
! 122: {
! 123: return;
! 124: }
! 125:
! 126: writer = bio_writer_create(STRING_VERSION_MIN_SIZE);
! 127: writer->write_data8(writer, this->version);
! 128: writer->write_data8(writer, this->build);
! 129: writer->write_data8(writer, this->config);
! 130:
! 131: this->value = writer->extract_buf(writer);
! 132: this->length = this->value.len;
! 133: writer->destroy(writer);
! 134: }
! 135:
! 136: METHOD(pa_tnc_attr_t, process, status_t,
! 137: private_ietf_attr_string_version_t *this, uint32_t *offset)
! 138: {
! 139: bio_reader_t *reader;
! 140: status_t status = FAILED;
! 141: chunk_t version, build, config;
! 142: u_char *pos;
! 143:
! 144: *offset = 0;
! 145:
! 146: if (this->value.len < this->length)
! 147: {
! 148: return NEED_MORE;
! 149: }
! 150: if (this->value.len < STRING_VERSION_MIN_SIZE)
! 151: {
! 152: DBG1(DBG_TNC, "insufficient data for IETF string version");
! 153: return FAILED;
! 154: }
! 155: reader = bio_reader_create(this->value);
! 156:
! 157: if (!reader->read_data8(reader, &version))
! 158: {
! 159: DBG1(DBG_TNC, "insufficient data for IETF product version number");
! 160: goto end;
! 161:
! 162: }
! 163: pos = memchr(version.ptr, '\0', version.len);
! 164: if (pos)
! 165: {
! 166: DBG1(DBG_TNC, "nul termination in IETF product version number");
! 167: *offset += 1 + (pos - version.ptr);
! 168: goto end;
! 169: }
! 170: *offset += 1 + version.len;
! 171:
! 172: if (!reader->read_data8(reader, &build))
! 173: {
! 174: DBG1(DBG_TNC, "insufficient data for IETF internal build number");
! 175: goto end;
! 176:
! 177: }
! 178: pos = memchr(build.ptr, '\0', build.len);
! 179: if (pos)
! 180: {
! 181: DBG1(DBG_TNC, "nul termination in IETF internal build number");
! 182: *offset += 1 + (pos - build.ptr);
! 183: goto end;
! 184: }
! 185: *offset += 1 + build.len;
! 186:
! 187: if (!reader->read_data8(reader, &config))
! 188: {
! 189: DBG1(DBG_TNC, "insufficient data for IETF configuration version number");
! 190: goto end;
! 191:
! 192: }
! 193: pos = memchr(config.ptr, '\0', config.len);
! 194: if (pos)
! 195: {
! 196: DBG1(DBG_TNC, "nul termination in IETF configuration version number");
! 197: *offset += 1 + (pos - config.ptr);
! 198: goto end;
! 199: }
! 200:
! 201: this->version = chunk_clone(version);
! 202: this->build = chunk_clone(build);
! 203: this->config = chunk_clone(config);
! 204: status = SUCCESS;
! 205:
! 206: end:
! 207: reader->destroy(reader);
! 208: return status;
! 209: }
! 210:
! 211: METHOD(pa_tnc_attr_t, add_segment, void,
! 212: private_ietf_attr_string_version_t *this, chunk_t segment)
! 213: {
! 214: this->value = chunk_cat("mc", this->value, segment);
! 215: }
! 216:
! 217: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 218: private_ietf_attr_string_version_t *this)
! 219: {
! 220: ref_get(&this->ref);
! 221: return &this->public.pa_tnc_attribute;
! 222: }
! 223:
! 224: METHOD(pa_tnc_attr_t, destroy, void,
! 225: private_ietf_attr_string_version_t *this)
! 226: {
! 227: if (ref_put(&this->ref))
! 228: {
! 229: free(this->version.ptr);
! 230: free(this->build.ptr);
! 231: free(this->config.ptr);
! 232: free(this->value.ptr);
! 233: free(this);
! 234: }
! 235: }
! 236:
! 237: METHOD(ietf_attr_string_version_t, get_version, chunk_t,
! 238: private_ietf_attr_string_version_t *this, chunk_t *build, chunk_t *config)
! 239: {
! 240: if (build)
! 241: {
! 242: *build = this->build;
! 243: }
! 244: if (config)
! 245: {
! 246: *config = this->config;
! 247: }
! 248: return this->version;
! 249: }
! 250:
! 251: /**
! 252: * Described in header.
! 253: */
! 254: pa_tnc_attr_t *ietf_attr_string_version_create(chunk_t version, chunk_t build,
! 255: chunk_t config)
! 256: {
! 257: private_ietf_attr_string_version_t *this;
! 258:
! 259: /* limit version numbers to 255 octets */
! 260: version.len = min(255, version.len);
! 261: build.len = min(255, build.len);
! 262: config.len = min(255, config.len);
! 263:
! 264: INIT(this,
! 265: .public = {
! 266: .pa_tnc_attribute = {
! 267: .get_type = _get_type,
! 268: .get_value = _get_value,
! 269: .get_noskip_flag = _get_noskip_flag,
! 270: .set_noskip_flag = _set_noskip_flag,
! 271: .build = _build,
! 272: .process = _process,
! 273: .add_segment = _add_segment,
! 274: .get_ref = _get_ref,
! 275: .destroy = _destroy,
! 276: },
! 277: .get_version = _get_version,
! 278: },
! 279: .type = { PEN_IETF, IETF_ATTR_STRING_VERSION },
! 280: .version = chunk_clone(version),
! 281: .build = chunk_clone(build),
! 282: .config = chunk_clone(config),
! 283: .ref = 1,
! 284: );
! 285:
! 286: return &this->public.pa_tnc_attribute;
! 287: }
! 288:
! 289: /**
! 290: * Described in header.
! 291: */
! 292: pa_tnc_attr_t *ietf_attr_string_version_create_from_data(size_t length,
! 293: chunk_t data)
! 294: {
! 295: private_ietf_attr_string_version_t *this;
! 296:
! 297: INIT(this,
! 298: .public = {
! 299: .pa_tnc_attribute = {
! 300: .get_type = _get_type,
! 301: .get_value = _get_value,
! 302: .get_noskip_flag = _get_noskip_flag,
! 303: .set_noskip_flag = _set_noskip_flag,
! 304: .build = _build,
! 305: .process = _process,
! 306: .add_segment = _add_segment,
! 307: .get_ref = _get_ref,
! 308: .destroy = _destroy,
! 309: },
! 310: .get_version = _get_version,
! 311: },
! 312: .type = { PEN_IETF, IETF_ATTR_STRING_VERSION },
! 313: .length = length,
! 314: .value = chunk_clone(data),
! 315: .ref = 1,
! 316: );
! 317:
! 318: return &this->public.pa_tnc_attribute;
! 319: }
! 320:
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