Avnet / WNCInterface

The WDCInterface is is a drop-in replacement for an EthernetInterface class that allows the user to connect to the Internet with a Wistron NeWeb Corporation (WNC) M14A2A Series data module using the standard network Socket API's. This interface class is used in the AT&T Cellular IoT Starter Kit which is sold by Avnet (http://cloudconnectkits.org/product/att-cellular-iot-starter-kit).

Dependencies:   WncControllerK64F

Dependents:   WNCProximityMqtt Pubnub_ATT_IoT_SK_WNC_sync BluemixDemo BluemixQS ... more

See the WNCInterface README in the Wiki tab for detailed information on this library.

mbedtls/source/asn1parse.c@29:b278b745fb4f, 2017-03-24 (annotated)

Committer:
JMF
Date:
Fri Mar 24 22:26:23 2017 +0000
Revision:
29:b278b745fb4f
Parent:
12:0071cb144c7a 
updated Class name of TCPSocketConnection to WncTCPSocketConnection;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 12:0071cb144c7a 1 /*
JMF 12:0071cb144c7a 2 * Generic ASN.1 parsing
JMF 12:0071cb144c7a 3 *
JMF 12:0071cb144c7a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF 12:0071cb144c7a 5 * SPDX-License-Identifier: Apache-2.0
JMF 12:0071cb144c7a 6 *
JMF 12:0071cb144c7a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF 12:0071cb144c7a 8 * not use this file except in compliance with the License.
JMF 12:0071cb144c7a 9 * You may obtain a copy of the License at
JMF 12:0071cb144c7a 10 *
JMF 12:0071cb144c7a 11 * http://www.apache.org/licenses/LICENSE-2.0
JMF 12:0071cb144c7a 12 *
JMF 12:0071cb144c7a 13 * Unless required by applicable law or agreed to in writing, software
JMF 12:0071cb144c7a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF 12:0071cb144c7a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF 12:0071cb144c7a 16 * See the License for the specific language governing permissions and
JMF 12:0071cb144c7a 17 * limitations under the License.
JMF 12:0071cb144c7a 18 *
JMF 12:0071cb144c7a 19 * This file is part of mbed TLS (https://tls.mbed.org)
JMF 12:0071cb144c7a 20 */
JMF 12:0071cb144c7a 21
JMF 12:0071cb144c7a 22 #if !defined(MBEDTLS_CONFIG_FILE)
JMF 12:0071cb144c7a 23 #include "mbedtls/config.h"
JMF 12:0071cb144c7a 24 #else
JMF 12:0071cb144c7a 25 #include MBEDTLS_CONFIG_FILE
JMF 12:0071cb144c7a 26 #endif
JMF 12:0071cb144c7a 27
JMF 12:0071cb144c7a 28 #if defined(MBEDTLS_ASN1_PARSE_C)
JMF 12:0071cb144c7a 29
JMF 12:0071cb144c7a 30 #include "mbedtls/asn1.h"
JMF 12:0071cb144c7a 31
JMF 12:0071cb144c7a 32 #include <string.h>
JMF 12:0071cb144c7a 33
JMF 12:0071cb144c7a 34 #if defined(MBEDTLS_BIGNUM_C)
JMF 12:0071cb144c7a 35 #include "mbedtls/bignum.h"
JMF 12:0071cb144c7a 36 #endif
JMF 12:0071cb144c7a 37
JMF 12:0071cb144c7a 38 #if defined(MBEDTLS_PLATFORM_C)
JMF 12:0071cb144c7a 39 #include "mbedtls/platform.h"
JMF 12:0071cb144c7a 40 #else
JMF 12:0071cb144c7a 41 #include <stdlib.h>
JMF 12:0071cb144c7a 42 #define mbedtls_calloc calloc
JMF 12:0071cb144c7a 43 #define mbedtls_free free
JMF 12:0071cb144c7a 44 #endif
JMF 12:0071cb144c7a 45
JMF 12:0071cb144c7a 46 /* Implementation that should never be optimized out by the compiler */
JMF 12:0071cb144c7a 47 static void mbedtls_zeroize( void *v, size_t n ) {
JMF 12:0071cb144c7a 48 volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
JMF 12:0071cb144c7a 49 }
JMF 12:0071cb144c7a 50
JMF 12:0071cb144c7a 51 /*
JMF 12:0071cb144c7a 52 * ASN.1 DER decoding routines
JMF 12:0071cb144c7a 53 */
JMF 12:0071cb144c7a 54 int mbedtls_asn1_get_len( unsigned char **p,
JMF 12:0071cb144c7a 55 const unsigned char *end,
JMF 12:0071cb144c7a 56 size_t *len )
JMF 12:0071cb144c7a 57 {
JMF 12:0071cb144c7a 58 if( ( end - *p ) < 1 )
JMF 12:0071cb144c7a 59 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 60
JMF 12:0071cb144c7a 61 if( ( **p & 0x80 ) == 0 )
JMF 12:0071cb144c7a 62 *len = *(*p)++;
JMF 12:0071cb144c7a 63 else
JMF 12:0071cb144c7a 64 {
JMF 12:0071cb144c7a 65 switch( **p & 0x7F )
JMF 12:0071cb144c7a 66 {
JMF 12:0071cb144c7a 67 case 1:
JMF 12:0071cb144c7a 68 if( ( end - *p ) < 2 )
JMF 12:0071cb144c7a 69 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 70
JMF 12:0071cb144c7a 71 *len = (*p)[1];
JMF 12:0071cb144c7a 72 (*p) += 2;
JMF 12:0071cb144c7a 73 break;
JMF 12:0071cb144c7a 74
JMF 12:0071cb144c7a 75 case 2:
JMF 12:0071cb144c7a 76 if( ( end - *p ) < 3 )
JMF 12:0071cb144c7a 77 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 78
JMF 12:0071cb144c7a 79 *len = ( (size_t)(*p)[1] << 8 ) | (*p)[2];
JMF 12:0071cb144c7a 80 (*p) += 3;
JMF 12:0071cb144c7a 81 break;
JMF 12:0071cb144c7a 82
JMF 12:0071cb144c7a 83 case 3:
JMF 12:0071cb144c7a 84 if( ( end - *p ) < 4 )
JMF 12:0071cb144c7a 85 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 86
JMF 12:0071cb144c7a 87 *len = ( (size_t)(*p)[1] << 16 ) |
JMF 12:0071cb144c7a 88 ( (size_t)(*p)[2] << 8 ) | (*p)[3];
JMF 12:0071cb144c7a 89 (*p) += 4;
JMF 12:0071cb144c7a 90 break;
JMF 12:0071cb144c7a 91
JMF 12:0071cb144c7a 92 case 4:
JMF 12:0071cb144c7a 93 if( ( end - *p ) < 5 )
JMF 12:0071cb144c7a 94 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 95
JMF 12:0071cb144c7a 96 *len = ( (size_t)(*p)[1] << 24 ) | ( (size_t)(*p)[2] << 16 ) |
JMF 12:0071cb144c7a 97 ( (size_t)(*p)[3] << 8 ) | (*p)[4];
JMF 12:0071cb144c7a 98 (*p) += 5;
JMF 12:0071cb144c7a 99 break;
JMF 12:0071cb144c7a 100
JMF 12:0071cb144c7a 101 default:
JMF 12:0071cb144c7a 102 return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 103 }
JMF 12:0071cb144c7a 104 }
JMF 12:0071cb144c7a 105
JMF 12:0071cb144c7a 106 if( *len > (size_t) ( end - *p ) )
JMF 12:0071cb144c7a 107 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 108
JMF 12:0071cb144c7a 109 return( 0 );
JMF 12:0071cb144c7a 110 }
JMF 12:0071cb144c7a 111
JMF 12:0071cb144c7a 112 int mbedtls_asn1_get_tag( unsigned char **p,
JMF 12:0071cb144c7a 113 const unsigned char *end,
JMF 12:0071cb144c7a 114 size_t *len, int tag )
JMF 12:0071cb144c7a 115 {
JMF 12:0071cb144c7a 116 if( ( end - *p ) < 1 )
JMF 12:0071cb144c7a 117 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 118
JMF 12:0071cb144c7a 119 if( **p != tag )
JMF 12:0071cb144c7a 120 return( MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
JMF 12:0071cb144c7a 121
JMF 12:0071cb144c7a 122 (*p)++;
JMF 12:0071cb144c7a 123
JMF 12:0071cb144c7a 124 return( mbedtls_asn1_get_len( p, end, len ) );
JMF 12:0071cb144c7a 125 }
JMF 12:0071cb144c7a 126
JMF 12:0071cb144c7a 127 int mbedtls_asn1_get_bool( unsigned char **p,
JMF 12:0071cb144c7a 128 const unsigned char *end,
JMF 12:0071cb144c7a 129 int *val )
JMF 12:0071cb144c7a 130 {
JMF 12:0071cb144c7a 131 int ret;
JMF 12:0071cb144c7a 132 size_t len;
JMF 12:0071cb144c7a 133
JMF 12:0071cb144c7a 134 if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_BOOLEAN ) ) != 0 )
JMF 12:0071cb144c7a 135 return( ret );
JMF 12:0071cb144c7a 136
JMF 12:0071cb144c7a 137 if( len != 1 )
JMF 12:0071cb144c7a 138 return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 139
JMF 12:0071cb144c7a 140 *val = ( **p != 0 ) ? 1 : 0;
JMF 12:0071cb144c7a 141 (*p)++;
JMF 12:0071cb144c7a 142
JMF 12:0071cb144c7a 143 return( 0 );
JMF 12:0071cb144c7a 144 }
JMF 12:0071cb144c7a 145
JMF 12:0071cb144c7a 146 int mbedtls_asn1_get_int( unsigned char **p,
JMF 12:0071cb144c7a 147 const unsigned char *end,
JMF 12:0071cb144c7a 148 int *val )
JMF 12:0071cb144c7a 149 {
JMF 12:0071cb144c7a 150 int ret;
JMF 12:0071cb144c7a 151 size_t len;
JMF 12:0071cb144c7a 152
JMF 12:0071cb144c7a 153 if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
JMF 12:0071cb144c7a 154 return( ret );
JMF 12:0071cb144c7a 155
JMF 12:0071cb144c7a 156 if( len > sizeof( int ) || ( **p & 0x80 ) != 0 )
JMF 12:0071cb144c7a 157 return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 158
JMF 12:0071cb144c7a 159 *val = 0;
JMF 12:0071cb144c7a 160
JMF 12:0071cb144c7a 161 while( len-- > 0 )
JMF 12:0071cb144c7a 162 {
JMF 12:0071cb144c7a 163 *val = ( *val << 8 ) | **p;
JMF 12:0071cb144c7a 164 (*p)++;
JMF 12:0071cb144c7a 165 }
JMF 12:0071cb144c7a 166
JMF 12:0071cb144c7a 167 return( 0 );
JMF 12:0071cb144c7a 168 }
JMF 12:0071cb144c7a 169
JMF 12:0071cb144c7a 170 #if defined(MBEDTLS_BIGNUM_C)
JMF 12:0071cb144c7a 171 int mbedtls_asn1_get_mpi( unsigned char **p,
JMF 12:0071cb144c7a 172 const unsigned char *end,
JMF 12:0071cb144c7a 173 mbedtls_mpi *X )
JMF 12:0071cb144c7a 174 {
JMF 12:0071cb144c7a 175 int ret;
JMF 12:0071cb144c7a 176 size_t len;
JMF 12:0071cb144c7a 177
JMF 12:0071cb144c7a 178 if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
JMF 12:0071cb144c7a 179 return( ret );
JMF 12:0071cb144c7a 180
JMF 12:0071cb144c7a 181 ret = mbedtls_mpi_read_binary( X, *p, len );
JMF 12:0071cb144c7a 182
JMF 12:0071cb144c7a 183 *p += len;
JMF 12:0071cb144c7a 184
JMF 12:0071cb144c7a 185 return( ret );
JMF 12:0071cb144c7a 186 }
JMF 12:0071cb144c7a 187 #endif /* MBEDTLS_BIGNUM_C */
JMF 12:0071cb144c7a 188
JMF 12:0071cb144c7a 189 int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
JMF 12:0071cb144c7a 190 mbedtls_asn1_bitstring *bs)
JMF 12:0071cb144c7a 191 {
JMF 12:0071cb144c7a 192 int ret;
JMF 12:0071cb144c7a 193
JMF 12:0071cb144c7a 194 /* Certificate type is a single byte bitstring */
JMF 12:0071cb144c7a 195 if( ( ret = mbedtls_asn1_get_tag( p, end, &bs->len, MBEDTLS_ASN1_BIT_STRING ) ) != 0 )
JMF 12:0071cb144c7a 196 return( ret );
JMF 12:0071cb144c7a 197
JMF 12:0071cb144c7a 198 /* Check length, subtract one for actual bit string length */
JMF 12:0071cb144c7a 199 if( bs->len < 1 )
JMF 12:0071cb144c7a 200 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 201 bs->len -= 1;
JMF 12:0071cb144c7a 202
JMF 12:0071cb144c7a 203 /* Get number of unused bits, ensure unused bits <= 7 */
JMF 12:0071cb144c7a 204 bs->unused_bits = **p;
JMF 12:0071cb144c7a 205 if( bs->unused_bits > 7 )
JMF 12:0071cb144c7a 206 return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
JMF 12:0071cb144c7a 207 (*p)++;
JMF 12:0071cb144c7a 208
JMF 12:0071cb144c7a 209 /* Get actual bitstring */
JMF 12:0071cb144c7a 210 bs->p = *p;
JMF 12:0071cb144c7a 211 *p += bs->len;
JMF 12:0071cb144c7a 212
JMF 12:0071cb144c7a 213 if( *p != end )
JMF 12:0071cb144c7a 214 return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 215
JMF 12:0071cb144c7a 216 return( 0 );
JMF 12:0071cb144c7a 217 }
JMF 12:0071cb144c7a 218
JMF 12:0071cb144c7a 219 /*
JMF 12:0071cb144c7a 220 * Get a bit string without unused bits
JMF 12:0071cb144c7a 221 */
JMF 12:0071cb144c7a 222 int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
JMF 12:0071cb144c7a 223 size_t *len )
JMF 12:0071cb144c7a 224 {
JMF 12:0071cb144c7a 225 int ret;
JMF 12:0071cb144c7a 226
JMF 12:0071cb144c7a 227 if( ( ret = mbedtls_asn1_get_tag( p, end, len, MBEDTLS_ASN1_BIT_STRING ) ) != 0 )
JMF 12:0071cb144c7a 228 return( ret );
JMF 12:0071cb144c7a 229
JMF 12:0071cb144c7a 230 if( (*len)-- < 2 || *(*p)++ != 0 )
JMF 12:0071cb144c7a 231 return( MBEDTLS_ERR_ASN1_INVALID_DATA );
JMF 12:0071cb144c7a 232
JMF 12:0071cb144c7a 233 return( 0 );
JMF 12:0071cb144c7a 234 }
JMF 12:0071cb144c7a 235
JMF 12:0071cb144c7a 236
JMF 12:0071cb144c7a 237
JMF 12:0071cb144c7a 238 /*
JMF 12:0071cb144c7a 239 * Parses and splits an ASN.1 "SEQUENCE OF <tag>"
JMF 12:0071cb144c7a 240 */
JMF 12:0071cb144c7a 241 int mbedtls_asn1_get_sequence_of( unsigned char **p,
JMF 12:0071cb144c7a 242 const unsigned char *end,
JMF 12:0071cb144c7a 243 mbedtls_asn1_sequence *cur,
JMF 12:0071cb144c7a 244 int tag)
JMF 12:0071cb144c7a 245 {
JMF 12:0071cb144c7a 246 int ret;
JMF 12:0071cb144c7a 247 size_t len;
JMF 12:0071cb144c7a 248 mbedtls_asn1_buf *buf;
JMF 12:0071cb144c7a 249
JMF 12:0071cb144c7a 250 /* Get main sequence tag */
JMF 12:0071cb144c7a 251 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 252 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 253 return( ret );
JMF 12:0071cb144c7a 254
JMF 12:0071cb144c7a 255 if( *p + len != end )
JMF 12:0071cb144c7a 256 return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 257
JMF 12:0071cb144c7a 258 while( *p < end )
JMF 12:0071cb144c7a 259 {
JMF 12:0071cb144c7a 260 buf = &(cur->buf);
JMF 12:0071cb144c7a 261 buf->tag = **p;
JMF 12:0071cb144c7a 262
JMF 12:0071cb144c7a 263 if( ( ret = mbedtls_asn1_get_tag( p, end, &buf->len, tag ) ) != 0 )
JMF 12:0071cb144c7a 264 return( ret );
JMF 12:0071cb144c7a 265
JMF 12:0071cb144c7a 266 buf->p = *p;
JMF 12:0071cb144c7a 267 *p += buf->len;
JMF 12:0071cb144c7a 268
JMF 12:0071cb144c7a 269 /* Allocate and assign next pointer */
JMF 12:0071cb144c7a 270 if( *p < end )
JMF 12:0071cb144c7a 271 {
JMF 12:0071cb144c7a 272 cur->next = (mbedtls_asn1_sequence*)mbedtls_calloc( 1,
JMF 12:0071cb144c7a 273 sizeof( mbedtls_asn1_sequence ) );
JMF 12:0071cb144c7a 274
JMF 12:0071cb144c7a 275 if( cur->next == NULL )
JMF 12:0071cb144c7a 276 return( MBEDTLS_ERR_ASN1_ALLOC_FAILED );
JMF 12:0071cb144c7a 277
JMF 12:0071cb144c7a 278 cur = cur->next;
JMF 12:0071cb144c7a 279 }
JMF 12:0071cb144c7a 280 }
JMF 12:0071cb144c7a 281
JMF 12:0071cb144c7a 282 /* Set final sequence entry's next pointer to NULL */
JMF 12:0071cb144c7a 283 cur->next = NULL;
JMF 12:0071cb144c7a 284
JMF 12:0071cb144c7a 285 if( *p != end )
JMF 12:0071cb144c7a 286 return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 287
JMF 12:0071cb144c7a 288 return( 0 );
JMF 12:0071cb144c7a 289 }
JMF 12:0071cb144c7a 290
JMF 12:0071cb144c7a 291 int mbedtls_asn1_get_alg( unsigned char **p,
JMF 12:0071cb144c7a 292 const unsigned char *end,
JMF 12:0071cb144c7a 293 mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params )
JMF 12:0071cb144c7a 294 {
JMF 12:0071cb144c7a 295 int ret;
JMF 12:0071cb144c7a 296 size_t len;
JMF 12:0071cb144c7a 297
JMF 12:0071cb144c7a 298 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
JMF 12:0071cb144c7a 299 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
JMF 12:0071cb144c7a 300 return( ret );
JMF 12:0071cb144c7a 301
JMF 12:0071cb144c7a 302 if( ( end - *p ) < 1 )
JMF 12:0071cb144c7a 303 return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
JMF 12:0071cb144c7a 304
JMF 12:0071cb144c7a 305 alg->tag = **p;
JMF 12:0071cb144c7a 306 end = *p + len;
JMF 12:0071cb144c7a 307
JMF 12:0071cb144c7a 308 if( ( ret = mbedtls_asn1_get_tag( p, end, &alg->len, MBEDTLS_ASN1_OID ) ) != 0 )
JMF 12:0071cb144c7a 309 return( ret );
JMF 12:0071cb144c7a 310
JMF 12:0071cb144c7a 311 alg->p = *p;
JMF 12:0071cb144c7a 312 *p += alg->len;
JMF 12:0071cb144c7a 313
JMF 12:0071cb144c7a 314 if( *p == end )
JMF 12:0071cb144c7a 315 {
JMF 12:0071cb144c7a 316 mbedtls_zeroize( params, sizeof(mbedtls_asn1_buf) );
JMF 12:0071cb144c7a 317 return( 0 );
JMF 12:0071cb144c7a 318 }
JMF 12:0071cb144c7a 319
JMF 12:0071cb144c7a 320 params->tag = **p;
JMF 12:0071cb144c7a 321 (*p)++;
JMF 12:0071cb144c7a 322
JMF 12:0071cb144c7a 323 if( ( ret = mbedtls_asn1_get_len( p, end, &params->len ) ) != 0 )
JMF 12:0071cb144c7a 324 return( ret );
JMF 12:0071cb144c7a 325
JMF 12:0071cb144c7a 326 params->p = *p;
JMF 12:0071cb144c7a 327 *p += params->len;
JMF 12:0071cb144c7a 328
JMF 12:0071cb144c7a 329 if( *p != end )
JMF 12:0071cb144c7a 330 return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
JMF 12:0071cb144c7a 331
JMF 12:0071cb144c7a 332 return( 0 );
JMF 12:0071cb144c7a 333 }
JMF 12:0071cb144c7a 334
JMF 12:0071cb144c7a 335 int mbedtls_asn1_get_alg_null( unsigned char **p,
JMF 12:0071cb144c7a 336 const unsigned char *end,
JMF 12:0071cb144c7a 337 mbedtls_asn1_buf *alg )
JMF 12:0071cb144c7a 338 {
JMF 12:0071cb144c7a 339 int ret;
JMF 12:0071cb144c7a 340 mbedtls_asn1_buf params;
JMF 12:0071cb144c7a 341
JMF 12:0071cb144c7a 342 memset( &params, 0, sizeof(mbedtls_asn1_buf) );
JMF 12:0071cb144c7a 343
JMF 12:0071cb144c7a 344 if( ( ret = mbedtls_asn1_get_alg( p, end, alg, &params ) ) != 0 )
JMF 12:0071cb144c7a 345 return( ret );
JMF 12:0071cb144c7a 346
JMF 12:0071cb144c7a 347 if( ( params.tag != MBEDTLS_ASN1_NULL && params.tag != 0 ) || params.len != 0 )
JMF 12:0071cb144c7a 348 return( MBEDTLS_ERR_ASN1_INVALID_DATA );
JMF 12:0071cb144c7a 349
JMF 12:0071cb144c7a 350 return( 0 );
JMF 12:0071cb144c7a 351 }
JMF 12:0071cb144c7a 352
JMF 12:0071cb144c7a 353 void mbedtls_asn1_free_named_data( mbedtls_asn1_named_data *cur )
JMF 12:0071cb144c7a 354 {
JMF 12:0071cb144c7a 355 if( cur == NULL )
JMF 12:0071cb144c7a 356 return;
JMF 12:0071cb144c7a 357
JMF 12:0071cb144c7a 358 mbedtls_free( cur->oid.p );
JMF 12:0071cb144c7a 359 mbedtls_free( cur->val.p );
JMF 12:0071cb144c7a 360
JMF 12:0071cb144c7a 361 mbedtls_zeroize( cur, sizeof( mbedtls_asn1_named_data ) );
JMF 12:0071cb144c7a 362 }
JMF 12:0071cb144c7a 363
JMF 12:0071cb144c7a 364 void mbedtls_asn1_free_named_data_list( mbedtls_asn1_named_data **head )
JMF 12:0071cb144c7a 365 {
JMF 12:0071cb144c7a 366 mbedtls_asn1_named_data *cur;
JMF 12:0071cb144c7a 367
JMF 12:0071cb144c7a 368 while( ( cur = *head ) != NULL )
JMF 12:0071cb144c7a 369 {
JMF 12:0071cb144c7a 370 *head = cur->next;
JMF 12:0071cb144c7a 371 mbedtls_asn1_free_named_data( cur );
JMF 12:0071cb144c7a 372 mbedtls_free( cur );
JMF 12:0071cb144c7a 373 }
JMF 12:0071cb144c7a 374 }
JMF 12:0071cb144c7a 375
JMF 12:0071cb144c7a 376 mbedtls_asn1_named_data *mbedtls_asn1_find_named_data( mbedtls_asn1_named_data *list,
JMF 12:0071cb144c7a 377 const char *oid, size_t len )
JMF 12:0071cb144c7a 378 {
JMF 12:0071cb144c7a 379 while( list != NULL )
JMF 12:0071cb144c7a 380 {
JMF 12:0071cb144c7a 381 if( list->oid.len == len &&
JMF 12:0071cb144c7a 382 memcmp( list->oid.p, oid, len ) == 0 )
JMF 12:0071cb144c7a 383 {
JMF 12:0071cb144c7a 384 break;
JMF 12:0071cb144c7a 385 }
JMF 12:0071cb144c7a 386
JMF 12:0071cb144c7a 387 list = list->next;
JMF 12:0071cb144c7a 388 }
JMF 12:0071cb144c7a 389
JMF 12:0071cb144c7a 390 return( list );
JMF 12:0071cb144c7a 391 }
JMF 12:0071cb144c7a 392
JMF 12:0071cb144c7a 393 #endif /* MBEDTLS_ASN1_PARSE_C */