Annotation of embedaddon/strongswan/src/libimcv/generic/generic_attr_bool.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 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 "generic_attr_bool.h"
! 17:
! 18: #include <imcv.h>
! 19: #include <pa_tnc/pa_tnc_msg.h>
! 20: #include <bio/bio_writer.h>
! 21: #include <bio/bio_reader.h>
! 22: #include <utils/debug.h>
! 23:
! 24: typedef struct private_generic_attr_bool_t private_generic_attr_bool_t;
! 25:
! 26: /**
! 27: * Generic PA-TNC attribute containing boolean status value in 32 bit encoding
! 28: *
! 29: * 1 2 3
! 30: * 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
! 31: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 32: * | Boolean Value |
! 33: * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! 34: */
! 35:
! 36: #define ATTR_BOOL_SIZE 4
! 37:
! 38: /**
! 39: * Private data of an generic_attr_bool_t object.
! 40: */
! 41: struct private_generic_attr_bool_t {
! 42:
! 43: /**
! 44: * Public members of generic_attr_bool_t
! 45: */
! 46: generic_attr_bool_t public;
! 47:
! 48: /**
! 49: * Vendor-specific attribute type
! 50: */
! 51: pen_type_t type;
! 52:
! 53: /**
! 54: * Length of attribute value
! 55: */
! 56: size_t length;
! 57:
! 58: /**
! 59: * Attribute value or segment
! 60: */
! 61: chunk_t value;
! 62:
! 63: /**
! 64: * Noskip flag
! 65: */
! 66: bool noskip_flag;
! 67:
! 68: /**
! 69: * Boolean status value
! 70: */
! 71: bool status;
! 72:
! 73: /**
! 74: * Reference count
! 75: */
! 76: refcount_t ref;
! 77: };
! 78:
! 79: METHOD(pa_tnc_attr_t, get_type, pen_type_t,
! 80: private_generic_attr_bool_t *this)
! 81: {
! 82: return this->type;
! 83: }
! 84:
! 85: METHOD(pa_tnc_attr_t, get_value, chunk_t,
! 86: private_generic_attr_bool_t *this)
! 87: {
! 88: return this->value;
! 89: }
! 90:
! 91: METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
! 92: private_generic_attr_bool_t *this)
! 93: {
! 94: return this->noskip_flag;
! 95: }
! 96:
! 97: METHOD(pa_tnc_attr_t, set_noskip_flag,void,
! 98: private_generic_attr_bool_t *this, bool noskip)
! 99: {
! 100: this->noskip_flag = noskip;
! 101: }
! 102:
! 103: METHOD(pa_tnc_attr_t, build, void,
! 104: private_generic_attr_bool_t *this)
! 105: {
! 106: bio_writer_t *writer;
! 107:
! 108: if (this->value.ptr)
! 109: {
! 110: return;
! 111: }
! 112: writer = bio_writer_create(ATTR_BOOL_SIZE);
! 113: writer->write_uint32(writer, this->status);
! 114:
! 115: this->value = writer->extract_buf(writer);
! 116: this->length = this->value.len;
! 117: writer->destroy(writer);
! 118: }
! 119:
! 120: METHOD(pa_tnc_attr_t, process, status_t,
! 121: private_generic_attr_bool_t *this, uint32_t *offset)
! 122: {
! 123: enum_name_t *pa_attr_names;
! 124: bio_reader_t *reader;
! 125: uint32_t status;
! 126:
! 127: *offset = 0;
! 128:
! 129: if (this->value.len < this->length)
! 130: {
! 131: return NEED_MORE;
! 132: }
! 133: pa_attr_names = imcv_pa_tnc_attributes->get_names(imcv_pa_tnc_attributes,
! 134: this->type.vendor_id);
! 135:
! 136: if (this->value.len != ATTR_BOOL_SIZE)
! 137: {
! 138: DBG1(DBG_TNC, "incorrect attribute size for %N/%N",
! 139: pen_names, this->type.vendor_id, pa_attr_names, this->type.type);
! 140: return FAILED;
! 141: }
! 142: reader = bio_reader_create(this->value);
! 143: reader->read_uint32(reader, &status);
! 144: reader->destroy(reader);
! 145:
! 146: if (status > 1)
! 147: {
! 148: DBG1(DBG_TNC, "%N/%N attribute contains invalid non-boolean value %u",
! 149: pen_names, this->type.vendor_id, pa_attr_names, this->type.type,
! 150: status);
! 151: return FAILED;
! 152: }
! 153: this->status = status;
! 154:
! 155: return SUCCESS;
! 156: }
! 157:
! 158: METHOD(pa_tnc_attr_t, add_segment, void,
! 159: private_generic_attr_bool_t *this, chunk_t segment)
! 160: {
! 161: this->value = chunk_cat("mc", this->value, segment);
! 162: }
! 163:
! 164: METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
! 165: private_generic_attr_bool_t *this)
! 166: {
! 167: ref_get(&this->ref);
! 168: return &this->public.pa_tnc_attribute;
! 169: }
! 170:
! 171: METHOD(pa_tnc_attr_t, destroy, void,
! 172: private_generic_attr_bool_t *this)
! 173: {
! 174: if (ref_put(&this->ref))
! 175: {
! 176: free(this->value.ptr);
! 177: free(this);
! 178: }
! 179: }
! 180:
! 181: METHOD(generic_attr_bool_t, get_status, bool,
! 182: private_generic_attr_bool_t *this)
! 183: {
! 184: return this->status;
! 185: }
! 186:
! 187: /**
! 188: * Described in header.
! 189: */
! 190: pa_tnc_attr_t *generic_attr_bool_create(bool status, pen_type_t type)
! 191: {
! 192: private_generic_attr_bool_t *this;
! 193:
! 194: INIT(this,
! 195: .public = {
! 196: .pa_tnc_attribute = {
! 197: .get_type = _get_type,
! 198: .get_value = _get_value,
! 199: .get_noskip_flag = _get_noskip_flag,
! 200: .set_noskip_flag = _set_noskip_flag,
! 201: .build = _build,
! 202: .process = _process,
! 203: .add_segment = _add_segment,
! 204: .get_ref = _get_ref,
! 205: .destroy = _destroy,
! 206: },
! 207: .get_status = _get_status,
! 208: },
! 209: .type = type,
! 210: .status = status,
! 211: .ref = 1,
! 212: );
! 213:
! 214: return &this->public.pa_tnc_attribute;
! 215: }
! 216:
! 217: /**
! 218: * Described in header.
! 219: */
! 220: pa_tnc_attr_t *generic_attr_bool_create_from_data(size_t length, chunk_t data,
! 221: pen_type_t type)
! 222: {
! 223: private_generic_attr_bool_t *this;
! 224:
! 225: INIT(this,
! 226: .public = {
! 227: .pa_tnc_attribute = {
! 228: .get_type = _get_type,
! 229: .get_value = _get_value,
! 230: .get_noskip_flag = _get_noskip_flag,
! 231: .set_noskip_flag = _set_noskip_flag,
! 232: .build = _build,
! 233: .process = _process,
! 234: .add_segment = _add_segment,
! 235: .get_ref = _get_ref,
! 236: .destroy = _destroy,
! 237: },
! 238: .get_status = _get_status,
! 239: },
! 240: .type = type,
! 241: .length = length,
! 242: .value = chunk_clone(data),
! 243: .ref = 1,
! 244: );
! 245:
! 246: return &this->public.pa_tnc_attribute;
! 247: }
! 248:
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