Annotation of embedaddon/strongswan/src/libimcv/ietf/ietf_attr_fwd_enabled.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2012-2015 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_fwd_enabled.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_fwd_enabled_t private_ietf_attr_fwd_enabled_t;
! 24:
! 25: /**
! 26: * PA-TNC Forwarding Enabled type (see section 4.2.11 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: * | Forwarding Enabled |
! 32: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 33: */
! 34:
! 35: #define FORWARDING_ENABLED_SIZE 4
! 36:
! 37: /**
! 38: * Private data of an ietf_attr_fwd_enabled_t object.
! 39: */
! 40: struct private_ietf_attr_fwd_enabled_t {
! 41:
! 42: /**
! 43: * Public members of ietf_attr_fwd_enabled_t
! 44: */
! 45: ietf_attr_fwd_enabled_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: * Forwarding Enabled status
! 69: */
! 70: os_fwd_status_t fwd_status;
! 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_fwd_enabled_t *this)
! 80: {
! 81: return this->type;
! 82: }
! 83:
! 84: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 85: private_ietf_attr_fwd_enabled_t *this)
! 86: {
! 87: return this->value;
! 88: }
! 89:
! 90: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 91: private_ietf_attr_fwd_enabled_t *this)
! 92: {
! 93: return this->noskip_flag;
! 94: }
! 95:
! 96: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 97: private_ietf_attr_fwd_enabled_t *this, bool noskip)
! 98: {
! 99: this->noskip_flag = noskip;
! 100: }
! 101:
! 102: METHOD(pa_tnc_attr_t, build, void,
! 103: private_ietf_attr_fwd_enabled_t *this)
! 104: {
! 105: bio_writer_t *writer;
! 106:
! 107: if (this->value.ptr)
! 108: {
! 109: return;
! 110: }
! 111: writer = bio_writer_create(FORWARDING_ENABLED_SIZE);
! 112: writer->write_uint32(writer, this->fwd_status);
! 113:
! 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_fwd_enabled_t *this, uint32_t *offset)
! 121: {
! 122: bio_reader_t *reader;
! 123: uint32_t fwd_status;
! 124:
! 125: *offset = 0;
! 126:
! 127: if (this->value.len < this->length)
! 128: {
! 129: return NEED_MORE;
! 130: }
! 131: if (this->value.len != FORWARDING_ENABLED_SIZE)
! 132: {
! 133: DBG1(DBG_TNC, "incorrect size for IETF forwarding enabled attribute");
! 134: return FAILED;
! 135: }
! 136: reader = bio_reader_create(this->value);
! 137: reader->read_uint32(reader, &fwd_status);
! 138: reader->destroy(reader);
! 139:
! 140: if (fwd_status > OS_FWD_UNKNOWN)
! 141: {
! 142: DBG1(DBG_TNC, "IETF forwarding enabled field has unknown value %u",
! 143: fwd_status);
! 144: return FAILED;
! 145: }
! 146: this->fwd_status = fwd_status;
! 147:
! 148: return SUCCESS;
! 149: }
! 150:
! 151: METHOD(pa_tnc_attr_t, add_segment, void,
! 152: private_ietf_attr_fwd_enabled_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_ietf_attr_fwd_enabled_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_ietf_attr_fwd_enabled_t *this)
! 166: {
! 167: if (ref_put(&this->ref))
! 168: {
! 169: free(this->value.ptr);
! 170: free(this);
! 171: }
! 172: }
! 173:
! 174: METHOD(ietf_attr_fwd_enabled_t, get_status, os_fwd_status_t,
! 175: private_ietf_attr_fwd_enabled_t *this)
! 176: {
! 177: return this->fwd_status;
! 178: }
! 179:
! 180: /**
! 181: * Described in header.
! 182: */
! 183: pa_tnc_attr_t *ietf_attr_fwd_enabled_create(os_fwd_status_t fwd_status,
! 184: pen_type_t type)
! 185: {
! 186: private_ietf_attr_fwd_enabled_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_status = _get_status,
! 202: },
! 203: .type = type,
! 204: .fwd_status = fwd_status,
! 205: .ref = 1,
! 206: );
! 207:
! 208: return &this->public.pa_tnc_attribute;
! 209: }
! 210:
! 211: /**
! 212: * Described in header.
! 213: */
! 214: pa_tnc_attr_t *ietf_attr_fwd_enabled_create_from_data(size_t length,
! 215: chunk_t data, pen_type_t type)
! 216: {
! 217: private_ietf_attr_fwd_enabled_t *this;
! 218:
! 219: INIT(this,
! 220: .public = {
! 221: .pa_tnc_attribute = {
! 222: .get_type = _get_type,
! 223: .get_value = _get_value,
! 224: .get_noskip_flag = _get_noskip_flag,
! 225: .set_noskip_flag = _set_noskip_flag,
! 226: .build = _build,
! 227: .process = _process,
! 228: .add_segment = _add_segment,
! 229: .get_ref = _get_ref,
! 230: .destroy = _destroy,
! 231: },
! 232: .get_status = _get_status,
! 233: },
! 234: .type = type,
! 235: .length = length,
! 236: .value = chunk_clone(data),
! 237: .ref = 1,
! 238: );
! 239:
! 240: return &this->public.pa_tnc_attribute;
! 241: }
! 242:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to ietf_attr_fwd_enabled.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