Annotation of embedaddon/strongswan/src/libimcv/ietf/ietf_attr_remediation_instr.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_remediation_instr.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_remediation_instr_t private_ietf_attr_remediation_instr_t;
! 24:
! 25: /**
! 26: * PA-TNC Remediation Instructions type (see section 4.2.10 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: * | Reserved | Remediation Parameters Vendor ID |
! 32: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 33: * | Remediation Parameters Type |
! 34: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 35: * | Remediation Parameters (Variable Length) |
! 36: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 37: */
! 38:
! 39: #define REMEDIATION_INSTR_MIN_SIZE 8
! 40: #define REMEDIATION_INSTR_RESERVED 0x00
! 41:
! 42: /**
! 43: * IETF Remediation Parameters URI type (see section 4.2.10.1 of RFC 5792)
! 44: *
! 45: * 1 2 3
! 46: * 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
! 47: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 48: * | Remediation URI (Variable Length) |
! 49: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 50: */
! 51:
! 52: /**
! 53: * IETF Remediation Parameters String type (see section 4.2.10.2 of RFC 5792)
! 54: *
! 55: * 1 2 3
! 56: * 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
! 57: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 58: * | Remediation String Length |
! 59: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 60: * | Remediation String (Variable Length) |
! 61: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 62: * | Lang Code Len | Remediation String Lang Code (Variable Len) |
! 63: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 64: */
! 65:
! 66: /**
! 67: * Private data of an ietf_attr_remediation_instr_t object.
! 68: */
! 69: struct private_ietf_attr_remediation_instr_t {
! 70:
! 71: /**
! 72: * Public members of ietf_attr_remediation_instr_t
! 73: */
! 74: ietf_attr_remediation_instr_t public;
! 75:
! 76: /**
! 77: * Vendor-specific attribute type
! 78: */
! 79: pen_type_t type;
! 80:
! 81: /**
! 82: * Length of attribute value
! 83: */
! 84: size_t length;
! 85:
! 86: /**
! 87: * Attribute value or segment
! 88: */
! 89: chunk_t value;
! 90:
! 91: /**
! 92: * Noskip flag
! 93: */
! 94: bool noskip_flag;
! 95:
! 96: /**
! 97: * Remediation Parameters Type
! 98: */
! 99: pen_type_t parameters_type;
! 100:
! 101: /**
! 102: * Remediation Parameters
! 103: */
! 104: chunk_t parameters;
! 105:
! 106: /**
! 107: * Remediation String
! 108: */
! 109: chunk_t string;
! 110:
! 111: /**
! 112: * Remediation Language Code
! 113: */
! 114: chunk_t lang_code;
! 115:
! 116: /**
! 117: * Reference count
! 118: */
! 119: refcount_t ref;
! 120: };
! 121:
! 122: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
! 123: private_ietf_attr_remediation_instr_t *this)
! 124: {
! 125: return this->type;
! 126: }
! 127:
! 128: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 129: private_ietf_attr_remediation_instr_t *this)
! 130: {
! 131: return this->value;
! 132: }
! 133:
! 134: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 135: private_ietf_attr_remediation_instr_t *this)
! 136: {
! 137: return this->noskip_flag;
! 138: }
! 139:
! 140: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 141: private_ietf_attr_remediation_instr_t *this, bool noskip)
! 142: {
! 143: this->noskip_flag = noskip;
! 144: }
! 145:
! 146: METHOD(pa_tnc_attr_t, build, void,
! 147: private_ietf_attr_remediation_instr_t *this)
! 148: {
! 149: bio_writer_t *writer;
! 150:
! 151: if (this->value.ptr)
! 152: {
! 153: return;
! 154: }
! 155:
! 156: writer = bio_writer_create(REMEDIATION_INSTR_MIN_SIZE);
! 157: writer->write_uint8 (writer, REMEDIATION_INSTR_RESERVED);
! 158: writer->write_uint24(writer, this->parameters_type.vendor_id);
! 159: writer->write_uint32(writer, this->parameters_type.type);
! 160: writer->write_data (writer, this->parameters);
! 161:
! 162: this->value = writer->extract_buf(writer);
! 163: this->length = this->value.len;
! 164: writer->destroy(writer);
! 165: }
! 166:
! 167: METHOD(pa_tnc_attr_t, process, status_t,
! 168: private_ietf_attr_remediation_instr_t *this, uint32_t *offset)
! 169: {
! 170: bio_reader_t *reader;
! 171: uint8_t reserved;
! 172: status_t status = SUCCESS;
! 173: u_char *pos;
! 174:
! 175: *offset = 0;
! 176:
! 177: if (this->value.len < this->length)
! 178: {
! 179: return NEED_MORE;
! 180: }
! 181: if (this->value.len < REMEDIATION_INSTR_MIN_SIZE)
! 182: {
! 183: DBG1(DBG_TNC, "insufficient data for IETF remediation instructions");
! 184: return FAILED;
! 185: }
! 186: reader = bio_reader_create(this->value);
! 187: reader->read_uint8 (reader, &reserved);
! 188: reader->read_uint24(reader, &this->parameters_type.vendor_id);
! 189: reader->read_uint32(reader, &this->parameters_type.type);
! 190: reader->read_data (reader, reader->remaining(reader), &this->parameters);
! 191:
! 192: this->parameters = chunk_clone(this->parameters);
! 193: reader->destroy(reader);
! 194:
! 195: if (this->parameters_type.vendor_id == PEN_IETF &&
! 196: this->parameters_type.type == IETF_REMEDIATION_PARAMETERS_STRING)
! 197: {
! 198: reader = bio_reader_create(this->parameters);
! 199: status = FAILED;
! 200: *offset = 8;
! 201:
! 202: if (!reader->read_data32(reader, &this->string))
! 203: {
! 204: DBG1(DBG_TNC, "insufficient data for IETF remediation string");
! 205: goto end;
! 206: }
! 207: *offset += 4;
! 208:
! 209: pos = memchr(this->string.ptr, '\0', this->string.len);
! 210: if (pos)
! 211: {
! 212: DBG1(DBG_TNC, "nul termination in IETF remediation string");
! 213: *offset += (pos - this->string.ptr);
! 214: goto end;
! 215: }
! 216: *offset += this->string.len;
! 217:
! 218: if (!reader->read_data8(reader, &this->lang_code))
! 219: {
! 220: DBG1(DBG_TNC, "insufficient data for IETF remediation lang code");
! 221: goto end;
! 222: }
! 223: status = SUCCESS;
! 224:
! 225: end:
! 226: reader->destroy(reader);
! 227: }
! 228: return status;
! 229: }
! 230:
! 231: METHOD(pa_tnc_attr_t, add_segment, void,
! 232: private_ietf_attr_remediation_instr_t *this, chunk_t segment)
! 233: {
! 234: this->value = chunk_cat("mc", this->value, segment);
! 235: }
! 236:
! 237: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 238: private_ietf_attr_remediation_instr_t *this)
! 239: {
! 240: ref_get(&this->ref);
! 241: return &this->public.pa_tnc_attribute;
! 242: }
! 243:
! 244: METHOD(pa_tnc_attr_t, destroy, void,
! 245: private_ietf_attr_remediation_instr_t *this)
! 246: {
! 247: if (ref_put(&this->ref))
! 248: {
! 249: free(this->parameters.ptr);
! 250: free(this->value.ptr);
! 251: free(this);
! 252: }
! 253: }
! 254:
! 255: METHOD(ietf_attr_remediation_instr_t, get_parameters_type, pen_type_t,
! 256: private_ietf_attr_remediation_instr_t *this)
! 257: {
! 258: return this->parameters_type;
! 259: }
! 260:
! 261: METHOD(ietf_attr_remediation_instr_t, get_parameters, chunk_t,
! 262: private_ietf_attr_remediation_instr_t *this)
! 263: {
! 264: return this->parameters;
! 265: }
! 266:
! 267: METHOD(ietf_attr_remediation_instr_t, get_string, chunk_t,
! 268: private_ietf_attr_remediation_instr_t *this, chunk_t *lang_code)
! 269: {
! 270: if (lang_code)
! 271: {
! 272: *lang_code = this->lang_code;
! 273: }
! 274: return this->string;
! 275: }
! 276:
! 277: /**
! 278: * Described in header.
! 279: */
! 280: pa_tnc_attr_t *ietf_attr_remediation_instr_create(pen_type_t parameters_type,
! 281: chunk_t parameters)
! 282: {
! 283: private_ietf_attr_remediation_instr_t *this;
! 284:
! 285: INIT(this,
! 286: .public = {
! 287: .pa_tnc_attribute = {
! 288: .get_type = _get_type,
! 289: .get_value = _get_value,
! 290: .get_noskip_flag = _get_noskip_flag,
! 291: .set_noskip_flag = _set_noskip_flag,
! 292: .build = _build,
! 293: .process = _process,
! 294: .add_segment = _add_segment,
! 295: .get_ref = _get_ref,
! 296: .destroy = _destroy,
! 297: },
! 298: .get_parameters_type = _get_parameters_type,
! 299: .get_parameters = _get_parameters,
! 300: .get_uri = _get_parameters,
! 301: .get_string = _get_string,
! 302: },
! 303: .type = { PEN_IETF, IETF_ATTR_REMEDIATION_INSTRUCTIONS },
! 304: .parameters_type = parameters_type,
! 305: .parameters = chunk_clone(parameters),
! 306: .ref = 1,
! 307: );
! 308:
! 309: return &this->public.pa_tnc_attribute;
! 310: }
! 311:
! 312: /**
! 313: * Described in header.
! 314: */
! 315: pa_tnc_attr_t *ietf_attr_remediation_instr_create_from_uri(chunk_t uri)
! 316: {
! 317: pen_type_t type = { PEN_IETF, IETF_REMEDIATION_PARAMETERS_URI };
! 318:
! 319: return ietf_attr_remediation_instr_create(type, uri);
! 320: }
! 321:
! 322: /**
! 323: * Described in header.
! 324: */
! 325: pa_tnc_attr_t *ietf_attr_remediation_instr_create_from_string(chunk_t string,
! 326: chunk_t lang_code)
! 327: {
! 328: pa_tnc_attr_t *attr;
! 329: bio_writer_t *writer;
! 330: pen_type_t type = { PEN_IETF, IETF_REMEDIATION_PARAMETERS_STRING };
! 331:
! 332: /* limit language code to 255 octets */
! 333: lang_code.len = min(255, lang_code.len);
! 334:
! 335: writer = bio_writer_create(4 + string.len + 1 + lang_code.len);
! 336: writer->write_data32(writer, string);
! 337: writer->write_data8 (writer, lang_code);
! 338:
! 339: attr = ietf_attr_remediation_instr_create(type, writer->get_buf(writer));
! 340: writer->destroy(writer);
! 341:
! 342: return attr;
! 343: }
! 344:
! 345: /**
! 346: * Described in header.
! 347: */
! 348: pa_tnc_attr_t *ietf_attr_remediation_instr_create_from_data(size_t length,
! 349: chunk_t data)
! 350: {
! 351: private_ietf_attr_remediation_instr_t *this;
! 352:
! 353: INIT(this,
! 354: .public = {
! 355: .pa_tnc_attribute = {
! 356: .get_type = _get_type,
! 357: .get_value = _get_value,
! 358: .get_noskip_flag = _get_noskip_flag,
! 359: .set_noskip_flag = _set_noskip_flag,
! 360: .build = _build,
! 361: .process = _process,
! 362: .add_segment = _add_segment,
! 363: .get_ref = _get_ref,
! 364: .destroy = _destroy,
! 365: },
! 366: .get_parameters_type = _get_parameters_type,
! 367: .get_parameters = _get_parameters,
! 368: .get_uri = _get_parameters,
! 369: .get_string = _get_string,
! 370: },
! 371: .type = { PEN_IETF, IETF_ATTR_REMEDIATION_INSTRUCTIONS },
! 372: .length = length,
! 373: .value = chunk_clone(data),
! 374: .ref = 1,
! 375: );
! 376:
! 377: return &this->public.pa_tnc_attribute;
! 378: }
! 379:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to ietf_attr_remediation_instr.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / strongswan / src / libimcv / ietf