Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

features/mbedtls/src/x509_crt.c@0:6c56fb4bc5f0, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:27:58 2016 +0000
Revision:
0:6c56fb4bc5f0
Moving to library for sharing updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /*
nexpaq 0:6c56fb4bc5f0 2 * X.509 certificate parsing and verification
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
nexpaq 0:6c56fb4bc5f0 5 * SPDX-License-Identifier: Apache-2.0
nexpaq 0:6c56fb4bc5f0 6 *
nexpaq 0:6c56fb4bc5f0 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
nexpaq 0:6c56fb4bc5f0 8 * not use this file except in compliance with the License.
nexpaq 0:6c56fb4bc5f0 9 * You may obtain a copy of the License at
nexpaq 0:6c56fb4bc5f0 10 *
nexpaq 0:6c56fb4bc5f0 11 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 0:6c56fb4bc5f0 12 *
nexpaq 0:6c56fb4bc5f0 13 * Unless required by applicable law or agreed to in writing, software
nexpaq 0:6c56fb4bc5f0 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
nexpaq 0:6c56fb4bc5f0 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 0:6c56fb4bc5f0 16 * See the License for the specific language governing permissions and
nexpaq 0:6c56fb4bc5f0 17 * limitations under the License.
nexpaq 0:6c56fb4bc5f0 18 *
nexpaq 0:6c56fb4bc5f0 19 * This file is part of mbed TLS (https://tls.mbed.org)
nexpaq 0:6c56fb4bc5f0 20 */
nexpaq 0:6c56fb4bc5f0 21 /*
nexpaq 0:6c56fb4bc5f0 22 * The ITU-T X.509 standard defines a certificate format for PKI.
nexpaq 0:6c56fb4bc5f0 23 *
nexpaq 0:6c56fb4bc5f0 24 * http://www.ietf.org/rfc/rfc5280.txt (Certificates and CRLs)
nexpaq 0:6c56fb4bc5f0 25 * http://www.ietf.org/rfc/rfc3279.txt (Alg IDs for CRLs)
nexpaq 0:6c56fb4bc5f0 26 * http://www.ietf.org/rfc/rfc2986.txt (CSRs, aka PKCS#10)
nexpaq 0:6c56fb4bc5f0 27 *
nexpaq 0:6c56fb4bc5f0 28 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
nexpaq 0:6c56fb4bc5f0 29 * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
nexpaq 0:6c56fb4bc5f0 30 */
nexpaq 0:6c56fb4bc5f0 31
nexpaq 0:6c56fb4bc5f0 32 #if !defined(MBEDTLS_CONFIG_FILE)
nexpaq 0:6c56fb4bc5f0 33 #include "mbedtls/config.h"
nexpaq 0:6c56fb4bc5f0 34 #else
nexpaq 0:6c56fb4bc5f0 35 #include MBEDTLS_CONFIG_FILE
nexpaq 0:6c56fb4bc5f0 36 #endif
nexpaq 0:6c56fb4bc5f0 37
nexpaq 0:6c56fb4bc5f0 38 #if defined(MBEDTLS_X509_CRT_PARSE_C)
nexpaq 0:6c56fb4bc5f0 39
nexpaq 0:6c56fb4bc5f0 40 #include "mbedtls/x509_crt.h"
nexpaq 0:6c56fb4bc5f0 41 #include "mbedtls/oid.h"
nexpaq 0:6c56fb4bc5f0 42
nexpaq 0:6c56fb4bc5f0 43 #include <stdio.h>
nexpaq 0:6c56fb4bc5f0 44 #include <string.h>
nexpaq 0:6c56fb4bc5f0 45
nexpaq 0:6c56fb4bc5f0 46 #if defined(MBEDTLS_PEM_PARSE_C)
nexpaq 0:6c56fb4bc5f0 47 #include "mbedtls/pem.h"
nexpaq 0:6c56fb4bc5f0 48 #endif
nexpaq 0:6c56fb4bc5f0 49
nexpaq 0:6c56fb4bc5f0 50 #if defined(MBEDTLS_PLATFORM_C)
nexpaq 0:6c56fb4bc5f0 51 #include "mbedtls/platform.h"
nexpaq 0:6c56fb4bc5f0 52 #else
nexpaq 0:6c56fb4bc5f0 53 #include <stdlib.h>
nexpaq 0:6c56fb4bc5f0 54 #define mbedtls_free free
nexpaq 0:6c56fb4bc5f0 55 #define mbedtls_calloc calloc
nexpaq 0:6c56fb4bc5f0 56 #define mbedtls_snprintf snprintf
nexpaq 0:6c56fb4bc5f0 57 #endif
nexpaq 0:6c56fb4bc5f0 58
nexpaq 0:6c56fb4bc5f0 59 #if defined(MBEDTLS_THREADING_C)
nexpaq 0:6c56fb4bc5f0 60 #include "mbedtls/threading.h"
nexpaq 0:6c56fb4bc5f0 61 #endif
nexpaq 0:6c56fb4bc5f0 62
nexpaq 0:6c56fb4bc5f0 63 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
nexpaq 0:6c56fb4bc5f0 64 #include <windows.h>
nexpaq 0:6c56fb4bc5f0 65 #else
nexpaq 0:6c56fb4bc5f0 66 #include <time.h>
nexpaq 0:6c56fb4bc5f0 67 #endif
nexpaq 0:6c56fb4bc5f0 68
nexpaq 0:6c56fb4bc5f0 69 #if defined(MBEDTLS_FS_IO)
nexpaq 0:6c56fb4bc5f0 70 #include <stdio.h>
nexpaq 0:6c56fb4bc5f0 71 #if !defined(_WIN32) || defined(EFIX64) || defined(EFI32)
nexpaq 0:6c56fb4bc5f0 72 #include <sys/types.h>
nexpaq 0:6c56fb4bc5f0 73 #include <sys/stat.h>
nexpaq 0:6c56fb4bc5f0 74 #include <dirent.h>
nexpaq 0:6c56fb4bc5f0 75 #endif /* !_WIN32 || EFIX64 || EFI32 */
nexpaq 0:6c56fb4bc5f0 76 #endif
nexpaq 0:6c56fb4bc5f0 77
nexpaq 0:6c56fb4bc5f0 78 /* Implementation that should never be optimized out by the compiler */
nexpaq 0:6c56fb4bc5f0 79 static void mbedtls_zeroize( void *v, size_t n ) {
nexpaq 0:6c56fb4bc5f0 80 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
nexpaq 0:6c56fb4bc5f0 81 }
nexpaq 0:6c56fb4bc5f0 82
nexpaq 0:6c56fb4bc5f0 83 /*
nexpaq 0:6c56fb4bc5f0 84 * Default profile
nexpaq 0:6c56fb4bc5f0 85 */
nexpaq 0:6c56fb4bc5f0 86 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default =
nexpaq 0:6c56fb4bc5f0 87 {
nexpaq 0:6c56fb4bc5f0 88 /* Hashes from SHA-1 and above */
nexpaq 0:6c56fb4bc5f0 89 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) |
nexpaq 0:6c56fb4bc5f0 90 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) |
nexpaq 0:6c56fb4bc5f0 91 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
nexpaq 0:6c56fb4bc5f0 92 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
nexpaq 0:6c56fb4bc5f0 93 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
nexpaq 0:6c56fb4bc5f0 94 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
nexpaq 0:6c56fb4bc5f0 95 0xFFFFFFF, /* Any PK alg */
nexpaq 0:6c56fb4bc5f0 96 0xFFFFFFF, /* Any curve */
nexpaq 0:6c56fb4bc5f0 97 2048,
nexpaq 0:6c56fb4bc5f0 98 };
nexpaq 0:6c56fb4bc5f0 99
nexpaq 0:6c56fb4bc5f0 100 /*
nexpaq 0:6c56fb4bc5f0 101 * Next-default profile
nexpaq 0:6c56fb4bc5f0 102 */
nexpaq 0:6c56fb4bc5f0 103 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next =
nexpaq 0:6c56fb4bc5f0 104 {
nexpaq 0:6c56fb4bc5f0 105 /* Hashes from SHA-256 and above */
nexpaq 0:6c56fb4bc5f0 106 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
nexpaq 0:6c56fb4bc5f0 107 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
nexpaq 0:6c56fb4bc5f0 108 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
nexpaq 0:6c56fb4bc5f0 109 0xFFFFFFF, /* Any PK alg */
nexpaq 0:6c56fb4bc5f0 110 #if defined(MBEDTLS_ECP_C)
nexpaq 0:6c56fb4bc5f0 111 /* Curves at or above 128-bit security level */
nexpaq 0:6c56fb4bc5f0 112 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) |
nexpaq 0:6c56fb4bc5f0 113 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ) |
nexpaq 0:6c56fb4bc5f0 114 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP521R1 ) |
nexpaq 0:6c56fb4bc5f0 115 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP256R1 ) |
nexpaq 0:6c56fb4bc5f0 116 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP384R1 ) |
nexpaq 0:6c56fb4bc5f0 117 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_BP512R1 ) |
nexpaq 0:6c56fb4bc5f0 118 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256K1 ),
nexpaq 0:6c56fb4bc5f0 119 #else
nexpaq 0:6c56fb4bc5f0 120 0,
nexpaq 0:6c56fb4bc5f0 121 #endif
nexpaq 0:6c56fb4bc5f0 122 2048,
nexpaq 0:6c56fb4bc5f0 123 };
nexpaq 0:6c56fb4bc5f0 124
nexpaq 0:6c56fb4bc5f0 125 /*
nexpaq 0:6c56fb4bc5f0 126 * NSA Suite B Profile
nexpaq 0:6c56fb4bc5f0 127 */
nexpaq 0:6c56fb4bc5f0 128 const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb =
nexpaq 0:6c56fb4bc5f0 129 {
nexpaq 0:6c56fb4bc5f0 130 /* Only SHA-256 and 384 */
nexpaq 0:6c56fb4bc5f0 131 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
nexpaq 0:6c56fb4bc5f0 132 MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ),
nexpaq 0:6c56fb4bc5f0 133 /* Only ECDSA */
nexpaq 0:6c56fb4bc5f0 134 MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_ECDSA ),
nexpaq 0:6c56fb4bc5f0 135 #if defined(MBEDTLS_ECP_C)
nexpaq 0:6c56fb4bc5f0 136 /* Only NIST P-256 and P-384 */
nexpaq 0:6c56fb4bc5f0 137 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP256R1 ) |
nexpaq 0:6c56fb4bc5f0 138 MBEDTLS_X509_ID_FLAG( MBEDTLS_ECP_DP_SECP384R1 ),
nexpaq 0:6c56fb4bc5f0 139 #else
nexpaq 0:6c56fb4bc5f0 140 0,
nexpaq 0:6c56fb4bc5f0 141 #endif
nexpaq 0:6c56fb4bc5f0 142 0,
nexpaq 0:6c56fb4bc5f0 143 };
nexpaq 0:6c56fb4bc5f0 144
nexpaq 0:6c56fb4bc5f0 145 /*
nexpaq 0:6c56fb4bc5f0 146 * Check md_alg against profile
nexpaq 0:6c56fb4bc5f0 147 * Return 0 if md_alg acceptable for this profile, -1 otherwise
nexpaq 0:6c56fb4bc5f0 148 */
nexpaq 0:6c56fb4bc5f0 149 static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile,
nexpaq 0:6c56fb4bc5f0 150 mbedtls_md_type_t md_alg )
nexpaq 0:6c56fb4bc5f0 151 {
nexpaq 0:6c56fb4bc5f0 152 if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 153 return( 0 );
nexpaq 0:6c56fb4bc5f0 154
nexpaq 0:6c56fb4bc5f0 155 return( -1 );
nexpaq 0:6c56fb4bc5f0 156 }
nexpaq 0:6c56fb4bc5f0 157
nexpaq 0:6c56fb4bc5f0 158 /*
nexpaq 0:6c56fb4bc5f0 159 * Check pk_alg against profile
nexpaq 0:6c56fb4bc5f0 160 * Return 0 if pk_alg acceptable for this profile, -1 otherwise
nexpaq 0:6c56fb4bc5f0 161 */
nexpaq 0:6c56fb4bc5f0 162 static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile,
nexpaq 0:6c56fb4bc5f0 163 mbedtls_pk_type_t pk_alg )
nexpaq 0:6c56fb4bc5f0 164 {
nexpaq 0:6c56fb4bc5f0 165 if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 166 return( 0 );
nexpaq 0:6c56fb4bc5f0 167
nexpaq 0:6c56fb4bc5f0 168 return( -1 );
nexpaq 0:6c56fb4bc5f0 169 }
nexpaq 0:6c56fb4bc5f0 170
nexpaq 0:6c56fb4bc5f0 171 /*
nexpaq 0:6c56fb4bc5f0 172 * Check key against profile
nexpaq 0:6c56fb4bc5f0 173 * Return 0 if pk_alg acceptable for this profile, -1 otherwise
nexpaq 0:6c56fb4bc5f0 174 */
nexpaq 0:6c56fb4bc5f0 175 static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile,
nexpaq 0:6c56fb4bc5f0 176 mbedtls_pk_type_t pk_alg,
nexpaq 0:6c56fb4bc5f0 177 const mbedtls_pk_context *pk )
nexpaq 0:6c56fb4bc5f0 178 {
nexpaq 0:6c56fb4bc5f0 179 #if defined(MBEDTLS_RSA_C)
nexpaq 0:6c56fb4bc5f0 180 if( pk_alg == MBEDTLS_PK_RSA || pk_alg == MBEDTLS_PK_RSASSA_PSS )
nexpaq 0:6c56fb4bc5f0 181 {
nexpaq 0:6c56fb4bc5f0 182 if( mbedtls_pk_get_bitlen( pk ) >= profile->rsa_min_bitlen )
nexpaq 0:6c56fb4bc5f0 183 return( 0 );
nexpaq 0:6c56fb4bc5f0 184
nexpaq 0:6c56fb4bc5f0 185 return( -1 );
nexpaq 0:6c56fb4bc5f0 186 }
nexpaq 0:6c56fb4bc5f0 187 #endif
nexpaq 0:6c56fb4bc5f0 188
nexpaq 0:6c56fb4bc5f0 189 #if defined(MBEDTLS_ECP_C)
nexpaq 0:6c56fb4bc5f0 190 if( pk_alg == MBEDTLS_PK_ECDSA ||
nexpaq 0:6c56fb4bc5f0 191 pk_alg == MBEDTLS_PK_ECKEY ||
nexpaq 0:6c56fb4bc5f0 192 pk_alg == MBEDTLS_PK_ECKEY_DH )
nexpaq 0:6c56fb4bc5f0 193 {
nexpaq 0:6c56fb4bc5f0 194 mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id;
nexpaq 0:6c56fb4bc5f0 195
nexpaq 0:6c56fb4bc5f0 196 if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 197 return( 0 );
nexpaq 0:6c56fb4bc5f0 198
nexpaq 0:6c56fb4bc5f0 199 return( -1 );
nexpaq 0:6c56fb4bc5f0 200 }
nexpaq 0:6c56fb4bc5f0 201 #endif
nexpaq 0:6c56fb4bc5f0 202
nexpaq 0:6c56fb4bc5f0 203 return( -1 );
nexpaq 0:6c56fb4bc5f0 204 }
nexpaq 0:6c56fb4bc5f0 205
nexpaq 0:6c56fb4bc5f0 206 /*
nexpaq 0:6c56fb4bc5f0 207 * Version ::= INTEGER { v1(0), v2(1), v3(2) }
nexpaq 0:6c56fb4bc5f0 208 */
nexpaq 0:6c56fb4bc5f0 209 static int x509_get_version( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 210 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 211 int *ver )
nexpaq 0:6c56fb4bc5f0 212 {
nexpaq 0:6c56fb4bc5f0 213 int ret;
nexpaq 0:6c56fb4bc5f0 214 size_t len;
nexpaq 0:6c56fb4bc5f0 215
nexpaq 0:6c56fb4bc5f0 216 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
nexpaq 0:6c56fb4bc5f0 217 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 218 {
nexpaq 0:6c56fb4bc5f0 219 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
nexpaq 0:6c56fb4bc5f0 220 {
nexpaq 0:6c56fb4bc5f0 221 *ver = 0;
nexpaq 0:6c56fb4bc5f0 222 return( 0 );
nexpaq 0:6c56fb4bc5f0 223 }
nexpaq 0:6c56fb4bc5f0 224
nexpaq 0:6c56fb4bc5f0 225 return( ret );
nexpaq 0:6c56fb4bc5f0 226 }
nexpaq 0:6c56fb4bc5f0 227
nexpaq 0:6c56fb4bc5f0 228 end = *p + len;
nexpaq 0:6c56fb4bc5f0 229
nexpaq 0:6c56fb4bc5f0 230 if( ( ret = mbedtls_asn1_get_int( p, end, ver ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 231 return( MBEDTLS_ERR_X509_INVALID_VERSION + ret );
nexpaq 0:6c56fb4bc5f0 232
nexpaq 0:6c56fb4bc5f0 233 if( *p != end )
nexpaq 0:6c56fb4bc5f0 234 return( MBEDTLS_ERR_X509_INVALID_VERSION +
nexpaq 0:6c56fb4bc5f0 235 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 236
nexpaq 0:6c56fb4bc5f0 237 return( 0 );
nexpaq 0:6c56fb4bc5f0 238 }
nexpaq 0:6c56fb4bc5f0 239
nexpaq 0:6c56fb4bc5f0 240 /*
nexpaq 0:6c56fb4bc5f0 241 * Validity ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 242 * notBefore Time,
nexpaq 0:6c56fb4bc5f0 243 * notAfter Time }
nexpaq 0:6c56fb4bc5f0 244 */
nexpaq 0:6c56fb4bc5f0 245 static int x509_get_dates( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 246 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 247 mbedtls_x509_time *from,
nexpaq 0:6c56fb4bc5f0 248 mbedtls_x509_time *to )
nexpaq 0:6c56fb4bc5f0 249 {
nexpaq 0:6c56fb4bc5f0 250 int ret;
nexpaq 0:6c56fb4bc5f0 251 size_t len;
nexpaq 0:6c56fb4bc5f0 252
nexpaq 0:6c56fb4bc5f0 253 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
nexpaq 0:6c56fb4bc5f0 254 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 255 return( MBEDTLS_ERR_X509_INVALID_DATE + ret );
nexpaq 0:6c56fb4bc5f0 256
nexpaq 0:6c56fb4bc5f0 257 end = *p + len;
nexpaq 0:6c56fb4bc5f0 258
nexpaq 0:6c56fb4bc5f0 259 if( ( ret = mbedtls_x509_get_time( p, end, from ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 260 return( ret );
nexpaq 0:6c56fb4bc5f0 261
nexpaq 0:6c56fb4bc5f0 262 if( ( ret = mbedtls_x509_get_time( p, end, to ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 263 return( ret );
nexpaq 0:6c56fb4bc5f0 264
nexpaq 0:6c56fb4bc5f0 265 if( *p != end )
nexpaq 0:6c56fb4bc5f0 266 return( MBEDTLS_ERR_X509_INVALID_DATE +
nexpaq 0:6c56fb4bc5f0 267 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 268
nexpaq 0:6c56fb4bc5f0 269 return( 0 );
nexpaq 0:6c56fb4bc5f0 270 }
nexpaq 0:6c56fb4bc5f0 271
nexpaq 0:6c56fb4bc5f0 272 /*
nexpaq 0:6c56fb4bc5f0 273 * X.509 v2/v3 unique identifier (not parsed)
nexpaq 0:6c56fb4bc5f0 274 */
nexpaq 0:6c56fb4bc5f0 275 static int x509_get_uid( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 276 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 277 mbedtls_x509_buf *uid, int n )
nexpaq 0:6c56fb4bc5f0 278 {
nexpaq 0:6c56fb4bc5f0 279 int ret;
nexpaq 0:6c56fb4bc5f0 280
nexpaq 0:6c56fb4bc5f0 281 if( *p == end )
nexpaq 0:6c56fb4bc5f0 282 return( 0 );
nexpaq 0:6c56fb4bc5f0 283
nexpaq 0:6c56fb4bc5f0 284 uid->tag = **p;
nexpaq 0:6c56fb4bc5f0 285
nexpaq 0:6c56fb4bc5f0 286 if( ( ret = mbedtls_asn1_get_tag( p, end, &uid->len,
nexpaq 0:6c56fb4bc5f0 287 MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | n ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 288 {
nexpaq 0:6c56fb4bc5f0 289 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
nexpaq 0:6c56fb4bc5f0 290 return( 0 );
nexpaq 0:6c56fb4bc5f0 291
nexpaq 0:6c56fb4bc5f0 292 return( ret );
nexpaq 0:6c56fb4bc5f0 293 }
nexpaq 0:6c56fb4bc5f0 294
nexpaq 0:6c56fb4bc5f0 295 uid->p = *p;
nexpaq 0:6c56fb4bc5f0 296 *p += uid->len;
nexpaq 0:6c56fb4bc5f0 297
nexpaq 0:6c56fb4bc5f0 298 return( 0 );
nexpaq 0:6c56fb4bc5f0 299 }
nexpaq 0:6c56fb4bc5f0 300
nexpaq 0:6c56fb4bc5f0 301 static int x509_get_basic_constraints( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 302 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 303 int *ca_istrue,
nexpaq 0:6c56fb4bc5f0 304 int *max_pathlen )
nexpaq 0:6c56fb4bc5f0 305 {
nexpaq 0:6c56fb4bc5f0 306 int ret;
nexpaq 0:6c56fb4bc5f0 307 size_t len;
nexpaq 0:6c56fb4bc5f0 308
nexpaq 0:6c56fb4bc5f0 309 /*
nexpaq 0:6c56fb4bc5f0 310 * BasicConstraints ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 311 * cA BOOLEAN DEFAULT FALSE,
nexpaq 0:6c56fb4bc5f0 312 * pathLenConstraint INTEGER (0..MAX) OPTIONAL }
nexpaq 0:6c56fb4bc5f0 313 */
nexpaq 0:6c56fb4bc5f0 314 *ca_istrue = 0; /* DEFAULT FALSE */
nexpaq 0:6c56fb4bc5f0 315 *max_pathlen = 0; /* endless */
nexpaq 0:6c56fb4bc5f0 316
nexpaq 0:6c56fb4bc5f0 317 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
nexpaq 0:6c56fb4bc5f0 318 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 319 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 320
nexpaq 0:6c56fb4bc5f0 321 if( *p == end )
nexpaq 0:6c56fb4bc5f0 322 return( 0 );
nexpaq 0:6c56fb4bc5f0 323
nexpaq 0:6c56fb4bc5f0 324 if( ( ret = mbedtls_asn1_get_bool( p, end, ca_istrue ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 325 {
nexpaq 0:6c56fb4bc5f0 326 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
nexpaq 0:6c56fb4bc5f0 327 ret = mbedtls_asn1_get_int( p, end, ca_istrue );
nexpaq 0:6c56fb4bc5f0 328
nexpaq 0:6c56fb4bc5f0 329 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 330 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 331
nexpaq 0:6c56fb4bc5f0 332 if( *ca_istrue != 0 )
nexpaq 0:6c56fb4bc5f0 333 *ca_istrue = 1;
nexpaq 0:6c56fb4bc5f0 334 }
nexpaq 0:6c56fb4bc5f0 335
nexpaq 0:6c56fb4bc5f0 336 if( *p == end )
nexpaq 0:6c56fb4bc5f0 337 return( 0 );
nexpaq 0:6c56fb4bc5f0 338
nexpaq 0:6c56fb4bc5f0 339 if( ( ret = mbedtls_asn1_get_int( p, end, max_pathlen ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 340 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 341
nexpaq 0:6c56fb4bc5f0 342 if( *p != end )
nexpaq 0:6c56fb4bc5f0 343 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 344 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 345
nexpaq 0:6c56fb4bc5f0 346 (*max_pathlen)++;
nexpaq 0:6c56fb4bc5f0 347
nexpaq 0:6c56fb4bc5f0 348 return( 0 );
nexpaq 0:6c56fb4bc5f0 349 }
nexpaq 0:6c56fb4bc5f0 350
nexpaq 0:6c56fb4bc5f0 351 static int x509_get_ns_cert_type( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 352 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 353 unsigned char *ns_cert_type)
nexpaq 0:6c56fb4bc5f0 354 {
nexpaq 0:6c56fb4bc5f0 355 int ret;
nexpaq 0:6c56fb4bc5f0 356 mbedtls_x509_bitstring bs = { 0, 0, NULL };
nexpaq 0:6c56fb4bc5f0 357
nexpaq 0:6c56fb4bc5f0 358 if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 359 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 360
nexpaq 0:6c56fb4bc5f0 361 if( bs.len != 1 )
nexpaq 0:6c56fb4bc5f0 362 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 363 MBEDTLS_ERR_ASN1_INVALID_LENGTH );
nexpaq 0:6c56fb4bc5f0 364
nexpaq 0:6c56fb4bc5f0 365 /* Get actual bitstring */
nexpaq 0:6c56fb4bc5f0 366 *ns_cert_type = *bs.p;
nexpaq 0:6c56fb4bc5f0 367 return( 0 );
nexpaq 0:6c56fb4bc5f0 368 }
nexpaq 0:6c56fb4bc5f0 369
nexpaq 0:6c56fb4bc5f0 370 static int x509_get_key_usage( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 371 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 372 unsigned int *key_usage)
nexpaq 0:6c56fb4bc5f0 373 {
nexpaq 0:6c56fb4bc5f0 374 int ret;
nexpaq 0:6c56fb4bc5f0 375 size_t i;
nexpaq 0:6c56fb4bc5f0 376 mbedtls_x509_bitstring bs = { 0, 0, NULL };
nexpaq 0:6c56fb4bc5f0 377
nexpaq 0:6c56fb4bc5f0 378 if( ( ret = mbedtls_asn1_get_bitstring( p, end, &bs ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 379 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 380
nexpaq 0:6c56fb4bc5f0 381 if( bs.len < 1 )
nexpaq 0:6c56fb4bc5f0 382 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 383 MBEDTLS_ERR_ASN1_INVALID_LENGTH );
nexpaq 0:6c56fb4bc5f0 384
nexpaq 0:6c56fb4bc5f0 385 /* Get actual bitstring */
nexpaq 0:6c56fb4bc5f0 386 *key_usage = 0;
nexpaq 0:6c56fb4bc5f0 387 for( i = 0; i < bs.len && i < sizeof( unsigned int ); i++ )
nexpaq 0:6c56fb4bc5f0 388 {
nexpaq 0:6c56fb4bc5f0 389 *key_usage |= (unsigned int) bs.p[i] << (8*i);
nexpaq 0:6c56fb4bc5f0 390 }
nexpaq 0:6c56fb4bc5f0 391
nexpaq 0:6c56fb4bc5f0 392 return( 0 );
nexpaq 0:6c56fb4bc5f0 393 }
nexpaq 0:6c56fb4bc5f0 394
nexpaq 0:6c56fb4bc5f0 395 /*
nexpaq 0:6c56fb4bc5f0 396 * ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
nexpaq 0:6c56fb4bc5f0 397 *
nexpaq 0:6c56fb4bc5f0 398 * KeyPurposeId ::= OBJECT IDENTIFIER
nexpaq 0:6c56fb4bc5f0 399 */
nexpaq 0:6c56fb4bc5f0 400 static int x509_get_ext_key_usage( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 401 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 402 mbedtls_x509_sequence *ext_key_usage)
nexpaq 0:6c56fb4bc5f0 403 {
nexpaq 0:6c56fb4bc5f0 404 int ret;
nexpaq 0:6c56fb4bc5f0 405
nexpaq 0:6c56fb4bc5f0 406 if( ( ret = mbedtls_asn1_get_sequence_of( p, end, ext_key_usage, MBEDTLS_ASN1_OID ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 407 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 408
nexpaq 0:6c56fb4bc5f0 409 /* Sequence length must be >= 1 */
nexpaq 0:6c56fb4bc5f0 410 if( ext_key_usage->buf.p == NULL )
nexpaq 0:6c56fb4bc5f0 411 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 412 MBEDTLS_ERR_ASN1_INVALID_LENGTH );
nexpaq 0:6c56fb4bc5f0 413
nexpaq 0:6c56fb4bc5f0 414 return( 0 );
nexpaq 0:6c56fb4bc5f0 415 }
nexpaq 0:6c56fb4bc5f0 416
nexpaq 0:6c56fb4bc5f0 417 /*
nexpaq 0:6c56fb4bc5f0 418 * SubjectAltName ::= GeneralNames
nexpaq 0:6c56fb4bc5f0 419 *
nexpaq 0:6c56fb4bc5f0 420 * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
nexpaq 0:6c56fb4bc5f0 421 *
nexpaq 0:6c56fb4bc5f0 422 * GeneralName ::= CHOICE {
nexpaq 0:6c56fb4bc5f0 423 * otherName [0] OtherName,
nexpaq 0:6c56fb4bc5f0 424 * rfc822Name [1] IA5String,
nexpaq 0:6c56fb4bc5f0 425 * dNSName [2] IA5String,
nexpaq 0:6c56fb4bc5f0 426 * x400Address [3] ORAddress,
nexpaq 0:6c56fb4bc5f0 427 * directoryName [4] Name,
nexpaq 0:6c56fb4bc5f0 428 * ediPartyName [5] EDIPartyName,
nexpaq 0:6c56fb4bc5f0 429 * uniformResourceIdentifier [6] IA5String,
nexpaq 0:6c56fb4bc5f0 430 * iPAddress [7] OCTET STRING,
nexpaq 0:6c56fb4bc5f0 431 * registeredID [8] OBJECT IDENTIFIER }
nexpaq 0:6c56fb4bc5f0 432 *
nexpaq 0:6c56fb4bc5f0 433 * OtherName ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 434 * type-id OBJECT IDENTIFIER,
nexpaq 0:6c56fb4bc5f0 435 * value [0] EXPLICIT ANY DEFINED BY type-id }
nexpaq 0:6c56fb4bc5f0 436 *
nexpaq 0:6c56fb4bc5f0 437 * EDIPartyName ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 438 * nameAssigner [0] DirectoryString OPTIONAL,
nexpaq 0:6c56fb4bc5f0 439 * partyName [1] DirectoryString }
nexpaq 0:6c56fb4bc5f0 440 *
nexpaq 0:6c56fb4bc5f0 441 * NOTE: we only parse and use dNSName at this point.
nexpaq 0:6c56fb4bc5f0 442 */
nexpaq 0:6c56fb4bc5f0 443 static int x509_get_subject_alt_name( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 444 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 445 mbedtls_x509_sequence *subject_alt_name )
nexpaq 0:6c56fb4bc5f0 446 {
nexpaq 0:6c56fb4bc5f0 447 int ret;
nexpaq 0:6c56fb4bc5f0 448 size_t len, tag_len;
nexpaq 0:6c56fb4bc5f0 449 mbedtls_asn1_buf *buf;
nexpaq 0:6c56fb4bc5f0 450 unsigned char tag;
nexpaq 0:6c56fb4bc5f0 451 mbedtls_asn1_sequence *cur = subject_alt_name;
nexpaq 0:6c56fb4bc5f0 452
nexpaq 0:6c56fb4bc5f0 453 /* Get main sequence tag */
nexpaq 0:6c56fb4bc5f0 454 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
nexpaq 0:6c56fb4bc5f0 455 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 456 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 457
nexpaq 0:6c56fb4bc5f0 458 if( *p + len != end )
nexpaq 0:6c56fb4bc5f0 459 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 460 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 461
nexpaq 0:6c56fb4bc5f0 462 while( *p < end )
nexpaq 0:6c56fb4bc5f0 463 {
nexpaq 0:6c56fb4bc5f0 464 if( ( end - *p ) < 1 )
nexpaq 0:6c56fb4bc5f0 465 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 466 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
nexpaq 0:6c56fb4bc5f0 467
nexpaq 0:6c56fb4bc5f0 468 tag = **p;
nexpaq 0:6c56fb4bc5f0 469 (*p)++;
nexpaq 0:6c56fb4bc5f0 470 if( ( ret = mbedtls_asn1_get_len( p, end, &tag_len ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 471 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 472
nexpaq 0:6c56fb4bc5f0 473 if( ( tag & MBEDTLS_ASN1_CONTEXT_SPECIFIC ) != MBEDTLS_ASN1_CONTEXT_SPECIFIC )
nexpaq 0:6c56fb4bc5f0 474 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 475 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
nexpaq 0:6c56fb4bc5f0 476
nexpaq 0:6c56fb4bc5f0 477 /* Skip everything but DNS name */
nexpaq 0:6c56fb4bc5f0 478 if( tag != ( MBEDTLS_ASN1_CONTEXT_SPECIFIC | 2 ) )
nexpaq 0:6c56fb4bc5f0 479 {
nexpaq 0:6c56fb4bc5f0 480 *p += tag_len;
nexpaq 0:6c56fb4bc5f0 481 continue;
nexpaq 0:6c56fb4bc5f0 482 }
nexpaq 0:6c56fb4bc5f0 483
nexpaq 0:6c56fb4bc5f0 484 /* Allocate and assign next pointer */
nexpaq 0:6c56fb4bc5f0 485 if( cur->buf.p != NULL )
nexpaq 0:6c56fb4bc5f0 486 {
nexpaq 0:6c56fb4bc5f0 487 if( cur->next != NULL )
nexpaq 0:6c56fb4bc5f0 488 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
nexpaq 0:6c56fb4bc5f0 489
nexpaq 0:6c56fb4bc5f0 490 cur->next = mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
nexpaq 0:6c56fb4bc5f0 491
nexpaq 0:6c56fb4bc5f0 492 if( cur->next == NULL )
nexpaq 0:6c56fb4bc5f0 493 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 494 MBEDTLS_ERR_ASN1_ALLOC_FAILED );
nexpaq 0:6c56fb4bc5f0 495
nexpaq 0:6c56fb4bc5f0 496 cur = cur->next;
nexpaq 0:6c56fb4bc5f0 497 }
nexpaq 0:6c56fb4bc5f0 498
nexpaq 0:6c56fb4bc5f0 499 buf = &(cur->buf);
nexpaq 0:6c56fb4bc5f0 500 buf->tag = tag;
nexpaq 0:6c56fb4bc5f0 501 buf->p = *p;
nexpaq 0:6c56fb4bc5f0 502 buf->len = tag_len;
nexpaq 0:6c56fb4bc5f0 503 *p += buf->len;
nexpaq 0:6c56fb4bc5f0 504 }
nexpaq 0:6c56fb4bc5f0 505
nexpaq 0:6c56fb4bc5f0 506 /* Set final sequence entry's next pointer to NULL */
nexpaq 0:6c56fb4bc5f0 507 cur->next = NULL;
nexpaq 0:6c56fb4bc5f0 508
nexpaq 0:6c56fb4bc5f0 509 if( *p != end )
nexpaq 0:6c56fb4bc5f0 510 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 511 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 512
nexpaq 0:6c56fb4bc5f0 513 return( 0 );
nexpaq 0:6c56fb4bc5f0 514 }
nexpaq 0:6c56fb4bc5f0 515
nexpaq 0:6c56fb4bc5f0 516 /*
nexpaq 0:6c56fb4bc5f0 517 * X.509 v3 extensions
nexpaq 0:6c56fb4bc5f0 518 *
nexpaq 0:6c56fb4bc5f0 519 */
nexpaq 0:6c56fb4bc5f0 520 static int x509_get_crt_ext( unsigned char **p,
nexpaq 0:6c56fb4bc5f0 521 const unsigned char *end,
nexpaq 0:6c56fb4bc5f0 522 mbedtls_x509_crt *crt )
nexpaq 0:6c56fb4bc5f0 523 {
nexpaq 0:6c56fb4bc5f0 524 int ret;
nexpaq 0:6c56fb4bc5f0 525 size_t len;
nexpaq 0:6c56fb4bc5f0 526 unsigned char *end_ext_data, *end_ext_octet;
nexpaq 0:6c56fb4bc5f0 527
nexpaq 0:6c56fb4bc5f0 528 if( ( ret = mbedtls_x509_get_ext( p, end, &crt->v3_ext, 3 ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 529 {
nexpaq 0:6c56fb4bc5f0 530 if( ret == MBEDTLS_ERR_ASN1_UNEXPECTED_TAG )
nexpaq 0:6c56fb4bc5f0 531 return( 0 );
nexpaq 0:6c56fb4bc5f0 532
nexpaq 0:6c56fb4bc5f0 533 return( ret );
nexpaq 0:6c56fb4bc5f0 534 }
nexpaq 0:6c56fb4bc5f0 535
nexpaq 0:6c56fb4bc5f0 536 while( *p < end )
nexpaq 0:6c56fb4bc5f0 537 {
nexpaq 0:6c56fb4bc5f0 538 /*
nexpaq 0:6c56fb4bc5f0 539 * Extension ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 540 * extnID OBJECT IDENTIFIER,
nexpaq 0:6c56fb4bc5f0 541 * critical BOOLEAN DEFAULT FALSE,
nexpaq 0:6c56fb4bc5f0 542 * extnValue OCTET STRING }
nexpaq 0:6c56fb4bc5f0 543 */
nexpaq 0:6c56fb4bc5f0 544 mbedtls_x509_buf extn_oid = {0, 0, NULL};
nexpaq 0:6c56fb4bc5f0 545 int is_critical = 0; /* DEFAULT FALSE */
nexpaq 0:6c56fb4bc5f0 546 int ext_type = 0;
nexpaq 0:6c56fb4bc5f0 547
nexpaq 0:6c56fb4bc5f0 548 if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
nexpaq 0:6c56fb4bc5f0 549 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 550 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 551
nexpaq 0:6c56fb4bc5f0 552 end_ext_data = *p + len;
nexpaq 0:6c56fb4bc5f0 553
nexpaq 0:6c56fb4bc5f0 554 /* Get extension ID */
nexpaq 0:6c56fb4bc5f0 555 extn_oid.tag = **p;
nexpaq 0:6c56fb4bc5f0 556
nexpaq 0:6c56fb4bc5f0 557 if( ( ret = mbedtls_asn1_get_tag( p, end, &extn_oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 558 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 559
nexpaq 0:6c56fb4bc5f0 560 extn_oid.p = *p;
nexpaq 0:6c56fb4bc5f0 561 *p += extn_oid.len;
nexpaq 0:6c56fb4bc5f0 562
nexpaq 0:6c56fb4bc5f0 563 if( ( end - *p ) < 1 )
nexpaq 0:6c56fb4bc5f0 564 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 565 MBEDTLS_ERR_ASN1_OUT_OF_DATA );
nexpaq 0:6c56fb4bc5f0 566
nexpaq 0:6c56fb4bc5f0 567 /* Get optional critical */
nexpaq 0:6c56fb4bc5f0 568 if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 &&
nexpaq 0:6c56fb4bc5f0 569 ( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
nexpaq 0:6c56fb4bc5f0 570 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 571
nexpaq 0:6c56fb4bc5f0 572 /* Data should be octet string type */
nexpaq 0:6c56fb4bc5f0 573 if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &len,
nexpaq 0:6c56fb4bc5f0 574 MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 575 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
nexpaq 0:6c56fb4bc5f0 576
nexpaq 0:6c56fb4bc5f0 577 end_ext_octet = *p + len;
nexpaq 0:6c56fb4bc5f0 578
nexpaq 0:6c56fb4bc5f0 579 if( end_ext_octet != end_ext_data )
nexpaq 0:6c56fb4bc5f0 580 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 581 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 582
nexpaq 0:6c56fb4bc5f0 583 /*
nexpaq 0:6c56fb4bc5f0 584 * Detect supported extensions
nexpaq 0:6c56fb4bc5f0 585 */
nexpaq 0:6c56fb4bc5f0 586 ret = mbedtls_oid_get_x509_ext_type( &extn_oid, &ext_type );
nexpaq 0:6c56fb4bc5f0 587
nexpaq 0:6c56fb4bc5f0 588 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 589 {
nexpaq 0:6c56fb4bc5f0 590 /* No parser found, skip extension */
nexpaq 0:6c56fb4bc5f0 591 *p = end_ext_octet;
nexpaq 0:6c56fb4bc5f0 592
nexpaq 0:6c56fb4bc5f0 593 #if !defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
nexpaq 0:6c56fb4bc5f0 594 if( is_critical )
nexpaq 0:6c56fb4bc5f0 595 {
nexpaq 0:6c56fb4bc5f0 596 /* Data is marked as critical: fail */
nexpaq 0:6c56fb4bc5f0 597 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 598 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
nexpaq 0:6c56fb4bc5f0 599 }
nexpaq 0:6c56fb4bc5f0 600 #endif
nexpaq 0:6c56fb4bc5f0 601 continue;
nexpaq 0:6c56fb4bc5f0 602 }
nexpaq 0:6c56fb4bc5f0 603
nexpaq 0:6c56fb4bc5f0 604 /* Forbid repeated extensions */
nexpaq 0:6c56fb4bc5f0 605 if( ( crt->ext_types & ext_type ) != 0 )
nexpaq 0:6c56fb4bc5f0 606 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS );
nexpaq 0:6c56fb4bc5f0 607
nexpaq 0:6c56fb4bc5f0 608 crt->ext_types |= ext_type;
nexpaq 0:6c56fb4bc5f0 609
nexpaq 0:6c56fb4bc5f0 610 switch( ext_type )
nexpaq 0:6c56fb4bc5f0 611 {
nexpaq 0:6c56fb4bc5f0 612 case MBEDTLS_X509_EXT_BASIC_CONSTRAINTS:
nexpaq 0:6c56fb4bc5f0 613 /* Parse basic constraints */
nexpaq 0:6c56fb4bc5f0 614 if( ( ret = x509_get_basic_constraints( p, end_ext_octet,
nexpaq 0:6c56fb4bc5f0 615 &crt->ca_istrue, &crt->max_pathlen ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 616 return( ret );
nexpaq 0:6c56fb4bc5f0 617 break;
nexpaq 0:6c56fb4bc5f0 618
nexpaq 0:6c56fb4bc5f0 619 case MBEDTLS_X509_EXT_KEY_USAGE:
nexpaq 0:6c56fb4bc5f0 620 /* Parse key usage */
nexpaq 0:6c56fb4bc5f0 621 if( ( ret = x509_get_key_usage( p, end_ext_octet,
nexpaq 0:6c56fb4bc5f0 622 &crt->key_usage ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 623 return( ret );
nexpaq 0:6c56fb4bc5f0 624 break;
nexpaq 0:6c56fb4bc5f0 625
nexpaq 0:6c56fb4bc5f0 626 case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
nexpaq 0:6c56fb4bc5f0 627 /* Parse extended key usage */
nexpaq 0:6c56fb4bc5f0 628 if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
nexpaq 0:6c56fb4bc5f0 629 &crt->ext_key_usage ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 630 return( ret );
nexpaq 0:6c56fb4bc5f0 631 break;
nexpaq 0:6c56fb4bc5f0 632
nexpaq 0:6c56fb4bc5f0 633 case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
nexpaq 0:6c56fb4bc5f0 634 /* Parse subject alt name */
nexpaq 0:6c56fb4bc5f0 635 if( ( ret = x509_get_subject_alt_name( p, end_ext_octet,
nexpaq 0:6c56fb4bc5f0 636 &crt->subject_alt_names ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 637 return( ret );
nexpaq 0:6c56fb4bc5f0 638 break;
nexpaq 0:6c56fb4bc5f0 639
nexpaq 0:6c56fb4bc5f0 640 case MBEDTLS_X509_EXT_NS_CERT_TYPE:
nexpaq 0:6c56fb4bc5f0 641 /* Parse netscape certificate type */
nexpaq 0:6c56fb4bc5f0 642 if( ( ret = x509_get_ns_cert_type( p, end_ext_octet,
nexpaq 0:6c56fb4bc5f0 643 &crt->ns_cert_type ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 644 return( ret );
nexpaq 0:6c56fb4bc5f0 645 break;
nexpaq 0:6c56fb4bc5f0 646
nexpaq 0:6c56fb4bc5f0 647 default:
nexpaq 0:6c56fb4bc5f0 648 return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE );
nexpaq 0:6c56fb4bc5f0 649 }
nexpaq 0:6c56fb4bc5f0 650 }
nexpaq 0:6c56fb4bc5f0 651
nexpaq 0:6c56fb4bc5f0 652 if( *p != end )
nexpaq 0:6c56fb4bc5f0 653 return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
nexpaq 0:6c56fb4bc5f0 654 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 655
nexpaq 0:6c56fb4bc5f0 656 return( 0 );
nexpaq 0:6c56fb4bc5f0 657 }
nexpaq 0:6c56fb4bc5f0 658
nexpaq 0:6c56fb4bc5f0 659 /*
nexpaq 0:6c56fb4bc5f0 660 * Parse and fill a single X.509 certificate in DER format
nexpaq 0:6c56fb4bc5f0 661 */
nexpaq 0:6c56fb4bc5f0 662 static int x509_crt_parse_der_core( mbedtls_x509_crt *crt, const unsigned char *buf,
nexpaq 0:6c56fb4bc5f0 663 size_t buflen )
nexpaq 0:6c56fb4bc5f0 664 {
nexpaq 0:6c56fb4bc5f0 665 int ret;
nexpaq 0:6c56fb4bc5f0 666 size_t len;
nexpaq 0:6c56fb4bc5f0 667 unsigned char *p, *end, *crt_end;
nexpaq 0:6c56fb4bc5f0 668 mbedtls_x509_buf sig_params1, sig_params2, sig_oid2;
nexpaq 0:6c56fb4bc5f0 669
nexpaq 0:6c56fb4bc5f0 670 memset( &sig_params1, 0, sizeof( mbedtls_x509_buf ) );
nexpaq 0:6c56fb4bc5f0 671 memset( &sig_params2, 0, sizeof( mbedtls_x509_buf ) );
nexpaq 0:6c56fb4bc5f0 672 memset( &sig_oid2, 0, sizeof( mbedtls_x509_buf ) );
nexpaq 0:6c56fb4bc5f0 673
nexpaq 0:6c56fb4bc5f0 674 /*
nexpaq 0:6c56fb4bc5f0 675 * Check for valid input
nexpaq 0:6c56fb4bc5f0 676 */
nexpaq 0:6c56fb4bc5f0 677 if( crt == NULL || buf == NULL )
nexpaq 0:6c56fb4bc5f0 678 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 679
nexpaq 0:6c56fb4bc5f0 680 // Use the original buffer until we figure out actual length
nexpaq 0:6c56fb4bc5f0 681 p = (unsigned char*) buf;
nexpaq 0:6c56fb4bc5f0 682 len = buflen;
nexpaq 0:6c56fb4bc5f0 683 end = p + len;
nexpaq 0:6c56fb4bc5f0 684
nexpaq 0:6c56fb4bc5f0 685 /*
nexpaq 0:6c56fb4bc5f0 686 * Certificate ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 687 * tbsCertificate TBSCertificate,
nexpaq 0:6c56fb4bc5f0 688 * signatureAlgorithm AlgorithmIdentifier,
nexpaq 0:6c56fb4bc5f0 689 * signatureValue BIT STRING }
nexpaq 0:6c56fb4bc5f0 690 */
nexpaq 0:6c56fb4bc5f0 691 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
nexpaq 0:6c56fb4bc5f0 692 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 693 {
nexpaq 0:6c56fb4bc5f0 694 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 695 return( MBEDTLS_ERR_X509_INVALID_FORMAT );
nexpaq 0:6c56fb4bc5f0 696 }
nexpaq 0:6c56fb4bc5f0 697
nexpaq 0:6c56fb4bc5f0 698 if( len > (size_t) ( end - p ) )
nexpaq 0:6c56fb4bc5f0 699 {
nexpaq 0:6c56fb4bc5f0 700 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 701 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
nexpaq 0:6c56fb4bc5f0 702 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 703 }
nexpaq 0:6c56fb4bc5f0 704 crt_end = p + len;
nexpaq 0:6c56fb4bc5f0 705
nexpaq 0:6c56fb4bc5f0 706 // Create and populate a new buffer for the raw field
nexpaq 0:6c56fb4bc5f0 707 crt->raw.len = crt_end - buf;
nexpaq 0:6c56fb4bc5f0 708 crt->raw.p = p = mbedtls_calloc( 1, crt->raw.len );
nexpaq 0:6c56fb4bc5f0 709 if( p == NULL )
nexpaq 0:6c56fb4bc5f0 710 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
nexpaq 0:6c56fb4bc5f0 711
nexpaq 0:6c56fb4bc5f0 712 memcpy( p, buf, crt->raw.len );
nexpaq 0:6c56fb4bc5f0 713
nexpaq 0:6c56fb4bc5f0 714 // Direct pointers to the new buffer
nexpaq 0:6c56fb4bc5f0 715 p += crt->raw.len - len;
nexpaq 0:6c56fb4bc5f0 716 end = crt_end = p + len;
nexpaq 0:6c56fb4bc5f0 717
nexpaq 0:6c56fb4bc5f0 718 /*
nexpaq 0:6c56fb4bc5f0 719 * TBSCertificate ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 720 */
nexpaq 0:6c56fb4bc5f0 721 crt->tbs.p = p;
nexpaq 0:6c56fb4bc5f0 722
nexpaq 0:6c56fb4bc5f0 723 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
nexpaq 0:6c56fb4bc5f0 724 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 725 {
nexpaq 0:6c56fb4bc5f0 726 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 727 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
nexpaq 0:6c56fb4bc5f0 728 }
nexpaq 0:6c56fb4bc5f0 729
nexpaq 0:6c56fb4bc5f0 730 end = p + len;
nexpaq 0:6c56fb4bc5f0 731 crt->tbs.len = end - crt->tbs.p;
nexpaq 0:6c56fb4bc5f0 732
nexpaq 0:6c56fb4bc5f0 733 /*
nexpaq 0:6c56fb4bc5f0 734 * Version ::= INTEGER { v1(0), v2(1), v3(2) }
nexpaq 0:6c56fb4bc5f0 735 *
nexpaq 0:6c56fb4bc5f0 736 * CertificateSerialNumber ::= INTEGER
nexpaq 0:6c56fb4bc5f0 737 *
nexpaq 0:6c56fb4bc5f0 738 * signature AlgorithmIdentifier
nexpaq 0:6c56fb4bc5f0 739 */
nexpaq 0:6c56fb4bc5f0 740 if( ( ret = x509_get_version( &p, end, &crt->version ) ) != 0 ||
nexpaq 0:6c56fb4bc5f0 741 ( ret = mbedtls_x509_get_serial( &p, end, &crt->serial ) ) != 0 ||
nexpaq 0:6c56fb4bc5f0 742 ( ret = mbedtls_x509_get_alg( &p, end, &crt->sig_oid,
nexpaq 0:6c56fb4bc5f0 743 &sig_params1 ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 744 {
nexpaq 0:6c56fb4bc5f0 745 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 746 return( ret );
nexpaq 0:6c56fb4bc5f0 747 }
nexpaq 0:6c56fb4bc5f0 748
nexpaq 0:6c56fb4bc5f0 749 crt->version++;
nexpaq 0:6c56fb4bc5f0 750
nexpaq 0:6c56fb4bc5f0 751 if( crt->version > 3 )
nexpaq 0:6c56fb4bc5f0 752 {
nexpaq 0:6c56fb4bc5f0 753 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 754 return( MBEDTLS_ERR_X509_UNKNOWN_VERSION );
nexpaq 0:6c56fb4bc5f0 755 }
nexpaq 0:6c56fb4bc5f0 756
nexpaq 0:6c56fb4bc5f0 757 if( ( ret = mbedtls_x509_get_sig_alg( &crt->sig_oid, &sig_params1,
nexpaq 0:6c56fb4bc5f0 758 &crt->sig_md, &crt->sig_pk,
nexpaq 0:6c56fb4bc5f0 759 &crt->sig_opts ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 760 {
nexpaq 0:6c56fb4bc5f0 761 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 762 return( ret );
nexpaq 0:6c56fb4bc5f0 763 }
nexpaq 0:6c56fb4bc5f0 764
nexpaq 0:6c56fb4bc5f0 765 /*
nexpaq 0:6c56fb4bc5f0 766 * issuer Name
nexpaq 0:6c56fb4bc5f0 767 */
nexpaq 0:6c56fb4bc5f0 768 crt->issuer_raw.p = p;
nexpaq 0:6c56fb4bc5f0 769
nexpaq 0:6c56fb4bc5f0 770 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
nexpaq 0:6c56fb4bc5f0 771 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 772 {
nexpaq 0:6c56fb4bc5f0 773 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 774 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
nexpaq 0:6c56fb4bc5f0 775 }
nexpaq 0:6c56fb4bc5f0 776
nexpaq 0:6c56fb4bc5f0 777 if( ( ret = mbedtls_x509_get_name( &p, p + len, &crt->issuer ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 778 {
nexpaq 0:6c56fb4bc5f0 779 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 780 return( ret );
nexpaq 0:6c56fb4bc5f0 781 }
nexpaq 0:6c56fb4bc5f0 782
nexpaq 0:6c56fb4bc5f0 783 crt->issuer_raw.len = p - crt->issuer_raw.p;
nexpaq 0:6c56fb4bc5f0 784
nexpaq 0:6c56fb4bc5f0 785 /*
nexpaq 0:6c56fb4bc5f0 786 * Validity ::= SEQUENCE {
nexpaq 0:6c56fb4bc5f0 787 * notBefore Time,
nexpaq 0:6c56fb4bc5f0 788 * notAfter Time }
nexpaq 0:6c56fb4bc5f0 789 *
nexpaq 0:6c56fb4bc5f0 790 */
nexpaq 0:6c56fb4bc5f0 791 if( ( ret = x509_get_dates( &p, end, &crt->valid_from,
nexpaq 0:6c56fb4bc5f0 792 &crt->valid_to ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 793 {
nexpaq 0:6c56fb4bc5f0 794 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 795 return( ret );
nexpaq 0:6c56fb4bc5f0 796 }
nexpaq 0:6c56fb4bc5f0 797
nexpaq 0:6c56fb4bc5f0 798 /*
nexpaq 0:6c56fb4bc5f0 799 * subject Name
nexpaq 0:6c56fb4bc5f0 800 */
nexpaq 0:6c56fb4bc5f0 801 crt->subject_raw.p = p;
nexpaq 0:6c56fb4bc5f0 802
nexpaq 0:6c56fb4bc5f0 803 if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
nexpaq 0:6c56fb4bc5f0 804 MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 805 {
nexpaq 0:6c56fb4bc5f0 806 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 807 return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
nexpaq 0:6c56fb4bc5f0 808 }
nexpaq 0:6c56fb4bc5f0 809
nexpaq 0:6c56fb4bc5f0 810 if( len && ( ret = mbedtls_x509_get_name( &p, p + len, &crt->subject ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 811 {
nexpaq 0:6c56fb4bc5f0 812 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 813 return( ret );
nexpaq 0:6c56fb4bc5f0 814 }
nexpaq 0:6c56fb4bc5f0 815
nexpaq 0:6c56fb4bc5f0 816 crt->subject_raw.len = p - crt->subject_raw.p;
nexpaq 0:6c56fb4bc5f0 817
nexpaq 0:6c56fb4bc5f0 818 /*
nexpaq 0:6c56fb4bc5f0 819 * SubjectPublicKeyInfo
nexpaq 0:6c56fb4bc5f0 820 */
nexpaq 0:6c56fb4bc5f0 821 if( ( ret = mbedtls_pk_parse_subpubkey( &p, end, &crt->pk ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 822 {
nexpaq 0:6c56fb4bc5f0 823 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 824 return( ret );
nexpaq 0:6c56fb4bc5f0 825 }
nexpaq 0:6c56fb4bc5f0 826
nexpaq 0:6c56fb4bc5f0 827 /*
nexpaq 0:6c56fb4bc5f0 828 * issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL,
nexpaq 0:6c56fb4bc5f0 829 * -- If present, version shall be v2 or v3
nexpaq 0:6c56fb4bc5f0 830 * subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL,
nexpaq 0:6c56fb4bc5f0 831 * -- If present, version shall be v2 or v3
nexpaq 0:6c56fb4bc5f0 832 * extensions [3] EXPLICIT Extensions OPTIONAL
nexpaq 0:6c56fb4bc5f0 833 * -- If present, version shall be v3
nexpaq 0:6c56fb4bc5f0 834 */
nexpaq 0:6c56fb4bc5f0 835 if( crt->version == 2 || crt->version == 3 )
nexpaq 0:6c56fb4bc5f0 836 {
nexpaq 0:6c56fb4bc5f0 837 ret = x509_get_uid( &p, end, &crt->issuer_id, 1 );
nexpaq 0:6c56fb4bc5f0 838 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 839 {
nexpaq 0:6c56fb4bc5f0 840 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 841 return( ret );
nexpaq 0:6c56fb4bc5f0 842 }
nexpaq 0:6c56fb4bc5f0 843 }
nexpaq 0:6c56fb4bc5f0 844
nexpaq 0:6c56fb4bc5f0 845 if( crt->version == 2 || crt->version == 3 )
nexpaq 0:6c56fb4bc5f0 846 {
nexpaq 0:6c56fb4bc5f0 847 ret = x509_get_uid( &p, end, &crt->subject_id, 2 );
nexpaq 0:6c56fb4bc5f0 848 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 849 {
nexpaq 0:6c56fb4bc5f0 850 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 851 return( ret );
nexpaq 0:6c56fb4bc5f0 852 }
nexpaq 0:6c56fb4bc5f0 853 }
nexpaq 0:6c56fb4bc5f0 854
nexpaq 0:6c56fb4bc5f0 855 #if !defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
nexpaq 0:6c56fb4bc5f0 856 if( crt->version == 3 )
nexpaq 0:6c56fb4bc5f0 857 #endif
nexpaq 0:6c56fb4bc5f0 858 {
nexpaq 0:6c56fb4bc5f0 859 ret = x509_get_crt_ext( &p, end, crt );
nexpaq 0:6c56fb4bc5f0 860 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 861 {
nexpaq 0:6c56fb4bc5f0 862 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 863 return( ret );
nexpaq 0:6c56fb4bc5f0 864 }
nexpaq 0:6c56fb4bc5f0 865 }
nexpaq 0:6c56fb4bc5f0 866
nexpaq 0:6c56fb4bc5f0 867 if( p != end )
nexpaq 0:6c56fb4bc5f0 868 {
nexpaq 0:6c56fb4bc5f0 869 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 870 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
nexpaq 0:6c56fb4bc5f0 871 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 872 }
nexpaq 0:6c56fb4bc5f0 873
nexpaq 0:6c56fb4bc5f0 874 end = crt_end;
nexpaq 0:6c56fb4bc5f0 875
nexpaq 0:6c56fb4bc5f0 876 /*
nexpaq 0:6c56fb4bc5f0 877 * }
nexpaq 0:6c56fb4bc5f0 878 * -- end of TBSCertificate
nexpaq 0:6c56fb4bc5f0 879 *
nexpaq 0:6c56fb4bc5f0 880 * signatureAlgorithm AlgorithmIdentifier,
nexpaq 0:6c56fb4bc5f0 881 * signatureValue BIT STRING
nexpaq 0:6c56fb4bc5f0 882 */
nexpaq 0:6c56fb4bc5f0 883 if( ( ret = mbedtls_x509_get_alg( &p, end, &sig_oid2, &sig_params2 ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 884 {
nexpaq 0:6c56fb4bc5f0 885 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 886 return( ret );
nexpaq 0:6c56fb4bc5f0 887 }
nexpaq 0:6c56fb4bc5f0 888
nexpaq 0:6c56fb4bc5f0 889 if( crt->sig_oid.len != sig_oid2.len ||
nexpaq 0:6c56fb4bc5f0 890 memcmp( crt->sig_oid.p, sig_oid2.p, crt->sig_oid.len ) != 0 ||
nexpaq 0:6c56fb4bc5f0 891 sig_params1.len != sig_params2.len ||
nexpaq 0:6c56fb4bc5f0 892 ( sig_params1.len != 0 &&
nexpaq 0:6c56fb4bc5f0 893 memcmp( sig_params1.p, sig_params2.p, sig_params1.len ) != 0 ) )
nexpaq 0:6c56fb4bc5f0 894 {
nexpaq 0:6c56fb4bc5f0 895 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 896 return( MBEDTLS_ERR_X509_SIG_MISMATCH );
nexpaq 0:6c56fb4bc5f0 897 }
nexpaq 0:6c56fb4bc5f0 898
nexpaq 0:6c56fb4bc5f0 899 if( ( ret = mbedtls_x509_get_sig( &p, end, &crt->sig ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 900 {
nexpaq 0:6c56fb4bc5f0 901 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 902 return( ret );
nexpaq 0:6c56fb4bc5f0 903 }
nexpaq 0:6c56fb4bc5f0 904
nexpaq 0:6c56fb4bc5f0 905 if( p != end )
nexpaq 0:6c56fb4bc5f0 906 {
nexpaq 0:6c56fb4bc5f0 907 mbedtls_x509_crt_free( crt );
nexpaq 0:6c56fb4bc5f0 908 return( MBEDTLS_ERR_X509_INVALID_FORMAT +
nexpaq 0:6c56fb4bc5f0 909 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
nexpaq 0:6c56fb4bc5f0 910 }
nexpaq 0:6c56fb4bc5f0 911
nexpaq 0:6c56fb4bc5f0 912 return( 0 );
nexpaq 0:6c56fb4bc5f0 913 }
nexpaq 0:6c56fb4bc5f0 914
nexpaq 0:6c56fb4bc5f0 915 /*
nexpaq 0:6c56fb4bc5f0 916 * Parse one X.509 certificate in DER format from a buffer and add them to a
nexpaq 0:6c56fb4bc5f0 917 * chained list
nexpaq 0:6c56fb4bc5f0 918 */
nexpaq 0:6c56fb4bc5f0 919 int mbedtls_x509_crt_parse_der( mbedtls_x509_crt *chain, const unsigned char *buf,
nexpaq 0:6c56fb4bc5f0 920 size_t buflen )
nexpaq 0:6c56fb4bc5f0 921 {
nexpaq 0:6c56fb4bc5f0 922 int ret;
nexpaq 0:6c56fb4bc5f0 923 mbedtls_x509_crt *crt = chain, *prev = NULL;
nexpaq 0:6c56fb4bc5f0 924
nexpaq 0:6c56fb4bc5f0 925 /*
nexpaq 0:6c56fb4bc5f0 926 * Check for valid input
nexpaq 0:6c56fb4bc5f0 927 */
nexpaq 0:6c56fb4bc5f0 928 if( crt == NULL || buf == NULL )
nexpaq 0:6c56fb4bc5f0 929 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 930
nexpaq 0:6c56fb4bc5f0 931 while( crt->version != 0 && crt->next != NULL )
nexpaq 0:6c56fb4bc5f0 932 {
nexpaq 0:6c56fb4bc5f0 933 prev = crt;
nexpaq 0:6c56fb4bc5f0 934 crt = crt->next;
nexpaq 0:6c56fb4bc5f0 935 }
nexpaq 0:6c56fb4bc5f0 936
nexpaq 0:6c56fb4bc5f0 937 /*
nexpaq 0:6c56fb4bc5f0 938 * Add new certificate on the end of the chain if needed.
nexpaq 0:6c56fb4bc5f0 939 */
nexpaq 0:6c56fb4bc5f0 940 if( crt->version != 0 && crt->next == NULL )
nexpaq 0:6c56fb4bc5f0 941 {
nexpaq 0:6c56fb4bc5f0 942 crt->next = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
nexpaq 0:6c56fb4bc5f0 943
nexpaq 0:6c56fb4bc5f0 944 if( crt->next == NULL )
nexpaq 0:6c56fb4bc5f0 945 return( MBEDTLS_ERR_X509_ALLOC_FAILED );
nexpaq 0:6c56fb4bc5f0 946
nexpaq 0:6c56fb4bc5f0 947 prev = crt;
nexpaq 0:6c56fb4bc5f0 948 mbedtls_x509_crt_init( crt->next );
nexpaq 0:6c56fb4bc5f0 949 crt = crt->next;
nexpaq 0:6c56fb4bc5f0 950 }
nexpaq 0:6c56fb4bc5f0 951
nexpaq 0:6c56fb4bc5f0 952 if( ( ret = x509_crt_parse_der_core( crt, buf, buflen ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 953 {
nexpaq 0:6c56fb4bc5f0 954 if( prev )
nexpaq 0:6c56fb4bc5f0 955 prev->next = NULL;
nexpaq 0:6c56fb4bc5f0 956
nexpaq 0:6c56fb4bc5f0 957 if( crt != chain )
nexpaq 0:6c56fb4bc5f0 958 mbedtls_free( crt );
nexpaq 0:6c56fb4bc5f0 959
nexpaq 0:6c56fb4bc5f0 960 return( ret );
nexpaq 0:6c56fb4bc5f0 961 }
nexpaq 0:6c56fb4bc5f0 962
nexpaq 0:6c56fb4bc5f0 963 return( 0 );
nexpaq 0:6c56fb4bc5f0 964 }
nexpaq 0:6c56fb4bc5f0 965
nexpaq 0:6c56fb4bc5f0 966 /*
nexpaq 0:6c56fb4bc5f0 967 * Parse one or more PEM certificates from a buffer and add them to the chained
nexpaq 0:6c56fb4bc5f0 968 * list
nexpaq 0:6c56fb4bc5f0 969 */
nexpaq 0:6c56fb4bc5f0 970 int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen )
nexpaq 0:6c56fb4bc5f0 971 {
nexpaq 0:6c56fb4bc5f0 972 int success = 0, first_error = 0, total_failed = 0;
nexpaq 0:6c56fb4bc5f0 973 #if defined(MBEDTLS_PEM_PARSE_C)
nexpaq 0:6c56fb4bc5f0 974 int buf_format = MBEDTLS_X509_FORMAT_DER;
nexpaq 0:6c56fb4bc5f0 975 #endif
nexpaq 0:6c56fb4bc5f0 976
nexpaq 0:6c56fb4bc5f0 977 /*
nexpaq 0:6c56fb4bc5f0 978 * Check for valid input
nexpaq 0:6c56fb4bc5f0 979 */
nexpaq 0:6c56fb4bc5f0 980 if( chain == NULL || buf == NULL )
nexpaq 0:6c56fb4bc5f0 981 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 982
nexpaq 0:6c56fb4bc5f0 983 /*
nexpaq 0:6c56fb4bc5f0 984 * Determine buffer content. Buffer contains either one DER certificate or
nexpaq 0:6c56fb4bc5f0 985 * one or more PEM certificates.
nexpaq 0:6c56fb4bc5f0 986 */
nexpaq 0:6c56fb4bc5f0 987 #if defined(MBEDTLS_PEM_PARSE_C)
nexpaq 0:6c56fb4bc5f0 988 if( buflen != 0 && buf[buflen - 1] == '\0' &&
nexpaq 0:6c56fb4bc5f0 989 strstr( (const char *) buf, "-----BEGIN CERTIFICATE-----" ) != NULL )
nexpaq 0:6c56fb4bc5f0 990 {
nexpaq 0:6c56fb4bc5f0 991 buf_format = MBEDTLS_X509_FORMAT_PEM;
nexpaq 0:6c56fb4bc5f0 992 }
nexpaq 0:6c56fb4bc5f0 993
nexpaq 0:6c56fb4bc5f0 994 if( buf_format == MBEDTLS_X509_FORMAT_DER )
nexpaq 0:6c56fb4bc5f0 995 return mbedtls_x509_crt_parse_der( chain, buf, buflen );
nexpaq 0:6c56fb4bc5f0 996 #else
nexpaq 0:6c56fb4bc5f0 997 return mbedtls_x509_crt_parse_der( chain, buf, buflen );
nexpaq 0:6c56fb4bc5f0 998 #endif
nexpaq 0:6c56fb4bc5f0 999
nexpaq 0:6c56fb4bc5f0 1000 #if defined(MBEDTLS_PEM_PARSE_C)
nexpaq 0:6c56fb4bc5f0 1001 if( buf_format == MBEDTLS_X509_FORMAT_PEM )
nexpaq 0:6c56fb4bc5f0 1002 {
nexpaq 0:6c56fb4bc5f0 1003 int ret;
nexpaq 0:6c56fb4bc5f0 1004 mbedtls_pem_context pem;
nexpaq 0:6c56fb4bc5f0 1005
nexpaq 0:6c56fb4bc5f0 1006 /* 1 rather than 0 since the terminating NULL byte is counted in */
nexpaq 0:6c56fb4bc5f0 1007 while( buflen > 1 )
nexpaq 0:6c56fb4bc5f0 1008 {
nexpaq 0:6c56fb4bc5f0 1009 size_t use_len;
nexpaq 0:6c56fb4bc5f0 1010 mbedtls_pem_init( &pem );
nexpaq 0:6c56fb4bc5f0 1011
nexpaq 0:6c56fb4bc5f0 1012 /* If we get there, we know the string is null-terminated */
nexpaq 0:6c56fb4bc5f0 1013 ret = mbedtls_pem_read_buffer( &pem,
nexpaq 0:6c56fb4bc5f0 1014 "-----BEGIN CERTIFICATE-----",
nexpaq 0:6c56fb4bc5f0 1015 "-----END CERTIFICATE-----",
nexpaq 0:6c56fb4bc5f0 1016 buf, NULL, 0, &use_len );
nexpaq 0:6c56fb4bc5f0 1017
nexpaq 0:6c56fb4bc5f0 1018 if( ret == 0 )
nexpaq 0:6c56fb4bc5f0 1019 {
nexpaq 0:6c56fb4bc5f0 1020 /*
nexpaq 0:6c56fb4bc5f0 1021 * Was PEM encoded
nexpaq 0:6c56fb4bc5f0 1022 */
nexpaq 0:6c56fb4bc5f0 1023 buflen -= use_len;
nexpaq 0:6c56fb4bc5f0 1024 buf += use_len;
nexpaq 0:6c56fb4bc5f0 1025 }
nexpaq 0:6c56fb4bc5f0 1026 else if( ret == MBEDTLS_ERR_PEM_BAD_INPUT_DATA )
nexpaq 0:6c56fb4bc5f0 1027 {
nexpaq 0:6c56fb4bc5f0 1028 return( ret );
nexpaq 0:6c56fb4bc5f0 1029 }
nexpaq 0:6c56fb4bc5f0 1030 else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
nexpaq 0:6c56fb4bc5f0 1031 {
nexpaq 0:6c56fb4bc5f0 1032 mbedtls_pem_free( &pem );
nexpaq 0:6c56fb4bc5f0 1033
nexpaq 0:6c56fb4bc5f0 1034 /*
nexpaq 0:6c56fb4bc5f0 1035 * PEM header and footer were found
nexpaq 0:6c56fb4bc5f0 1036 */
nexpaq 0:6c56fb4bc5f0 1037 buflen -= use_len;
nexpaq 0:6c56fb4bc5f0 1038 buf += use_len;
nexpaq 0:6c56fb4bc5f0 1039
nexpaq 0:6c56fb4bc5f0 1040 if( first_error == 0 )
nexpaq 0:6c56fb4bc5f0 1041 first_error = ret;
nexpaq 0:6c56fb4bc5f0 1042
nexpaq 0:6c56fb4bc5f0 1043 total_failed++;
nexpaq 0:6c56fb4bc5f0 1044 continue;
nexpaq 0:6c56fb4bc5f0 1045 }
nexpaq 0:6c56fb4bc5f0 1046 else
nexpaq 0:6c56fb4bc5f0 1047 break;
nexpaq 0:6c56fb4bc5f0 1048
nexpaq 0:6c56fb4bc5f0 1049 ret = mbedtls_x509_crt_parse_der( chain, pem.buf, pem.buflen );
nexpaq 0:6c56fb4bc5f0 1050
nexpaq 0:6c56fb4bc5f0 1051 mbedtls_pem_free( &pem );
nexpaq 0:6c56fb4bc5f0 1052
nexpaq 0:6c56fb4bc5f0 1053 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 1054 {
nexpaq 0:6c56fb4bc5f0 1055 /*
nexpaq 0:6c56fb4bc5f0 1056 * Quit parsing on a memory error
nexpaq 0:6c56fb4bc5f0 1057 */
nexpaq 0:6c56fb4bc5f0 1058 if( ret == MBEDTLS_ERR_X509_ALLOC_FAILED )
nexpaq 0:6c56fb4bc5f0 1059 return( ret );
nexpaq 0:6c56fb4bc5f0 1060
nexpaq 0:6c56fb4bc5f0 1061 if( first_error == 0 )
nexpaq 0:6c56fb4bc5f0 1062 first_error = ret;
nexpaq 0:6c56fb4bc5f0 1063
nexpaq 0:6c56fb4bc5f0 1064 total_failed++;
nexpaq 0:6c56fb4bc5f0 1065 continue;
nexpaq 0:6c56fb4bc5f0 1066 }
nexpaq 0:6c56fb4bc5f0 1067
nexpaq 0:6c56fb4bc5f0 1068 success = 1;
nexpaq 0:6c56fb4bc5f0 1069 }
nexpaq 0:6c56fb4bc5f0 1070 }
nexpaq 0:6c56fb4bc5f0 1071
nexpaq 0:6c56fb4bc5f0 1072 if( success )
nexpaq 0:6c56fb4bc5f0 1073 return( total_failed );
nexpaq 0:6c56fb4bc5f0 1074 else if( first_error )
nexpaq 0:6c56fb4bc5f0 1075 return( first_error );
nexpaq 0:6c56fb4bc5f0 1076 else
nexpaq 0:6c56fb4bc5f0 1077 return( MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT );
nexpaq 0:6c56fb4bc5f0 1078 #endif /* MBEDTLS_PEM_PARSE_C */
nexpaq 0:6c56fb4bc5f0 1079 }
nexpaq 0:6c56fb4bc5f0 1080
nexpaq 0:6c56fb4bc5f0 1081 #if defined(MBEDTLS_FS_IO)
nexpaq 0:6c56fb4bc5f0 1082 /*
nexpaq 0:6c56fb4bc5f0 1083 * Load one or more certificates and add them to the chained list
nexpaq 0:6c56fb4bc5f0 1084 */
nexpaq 0:6c56fb4bc5f0 1085 int mbedtls_x509_crt_parse_file( mbedtls_x509_crt *chain, const char *path )
nexpaq 0:6c56fb4bc5f0 1086 {
nexpaq 0:6c56fb4bc5f0 1087 int ret;
nexpaq 0:6c56fb4bc5f0 1088 size_t n;
nexpaq 0:6c56fb4bc5f0 1089 unsigned char *buf;
nexpaq 0:6c56fb4bc5f0 1090
nexpaq 0:6c56fb4bc5f0 1091 if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1092 return( ret );
nexpaq 0:6c56fb4bc5f0 1093
nexpaq 0:6c56fb4bc5f0 1094 ret = mbedtls_x509_crt_parse( chain, buf, n );
nexpaq 0:6c56fb4bc5f0 1095
nexpaq 0:6c56fb4bc5f0 1096 mbedtls_zeroize( buf, n );
nexpaq 0:6c56fb4bc5f0 1097 mbedtls_free( buf );
nexpaq 0:6c56fb4bc5f0 1098
nexpaq 0:6c56fb4bc5f0 1099 return( ret );
nexpaq 0:6c56fb4bc5f0 1100 }
nexpaq 0:6c56fb4bc5f0 1101
nexpaq 0:6c56fb4bc5f0 1102 int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path )
nexpaq 0:6c56fb4bc5f0 1103 {
nexpaq 0:6c56fb4bc5f0 1104 int ret = 0;
nexpaq 0:6c56fb4bc5f0 1105 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
nexpaq 0:6c56fb4bc5f0 1106 int w_ret;
nexpaq 0:6c56fb4bc5f0 1107 WCHAR szDir[MAX_PATH];
nexpaq 0:6c56fb4bc5f0 1108 char filename[MAX_PATH];
nexpaq 0:6c56fb4bc5f0 1109 char *p;
nexpaq 0:6c56fb4bc5f0 1110 size_t len = strlen( path );
nexpaq 0:6c56fb4bc5f0 1111
nexpaq 0:6c56fb4bc5f0 1112 WIN32_FIND_DATAW file_data;
nexpaq 0:6c56fb4bc5f0 1113 HANDLE hFind;
nexpaq 0:6c56fb4bc5f0 1114
nexpaq 0:6c56fb4bc5f0 1115 if( len > MAX_PATH - 3 )
nexpaq 0:6c56fb4bc5f0 1116 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 1117
nexpaq 0:6c56fb4bc5f0 1118 memset( szDir, 0, sizeof(szDir) );
nexpaq 0:6c56fb4bc5f0 1119 memset( filename, 0, MAX_PATH );
nexpaq 0:6c56fb4bc5f0 1120 memcpy( filename, path, len );
nexpaq 0:6c56fb4bc5f0 1121 filename[len++] = '\\';
nexpaq 0:6c56fb4bc5f0 1122 p = filename + len;
nexpaq 0:6c56fb4bc5f0 1123 filename[len++] = '*';
nexpaq 0:6c56fb4bc5f0 1124
nexpaq 0:6c56fb4bc5f0 1125 w_ret = MultiByteToWideChar( CP_ACP, 0, filename, len, szDir,
nexpaq 0:6c56fb4bc5f0 1126 MAX_PATH - 3 );
nexpaq 0:6c56fb4bc5f0 1127 if( w_ret == 0 )
nexpaq 0:6c56fb4bc5f0 1128 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 1129
nexpaq 0:6c56fb4bc5f0 1130 hFind = FindFirstFileW( szDir, &file_data );
nexpaq 0:6c56fb4bc5f0 1131 if( hFind == INVALID_HANDLE_VALUE )
nexpaq 0:6c56fb4bc5f0 1132 return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
nexpaq 0:6c56fb4bc5f0 1133
nexpaq 0:6c56fb4bc5f0 1134 len = MAX_PATH - len;
nexpaq 0:6c56fb4bc5f0 1135 do
nexpaq 0:6c56fb4bc5f0 1136 {
nexpaq 0:6c56fb4bc5f0 1137 memset( p, 0, len );
nexpaq 0:6c56fb4bc5f0 1138
nexpaq 0:6c56fb4bc5f0 1139 if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
nexpaq 0:6c56fb4bc5f0 1140 continue;
nexpaq 0:6c56fb4bc5f0 1141
nexpaq 0:6c56fb4bc5f0 1142 w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName,
nexpaq 0:6c56fb4bc5f0 1143 lstrlenW( file_data.cFileName ),
nexpaq 0:6c56fb4bc5f0 1144 p, (int) len - 1,
nexpaq 0:6c56fb4bc5f0 1145 NULL, NULL );
nexpaq 0:6c56fb4bc5f0 1146 if( w_ret == 0 )
nexpaq 0:6c56fb4bc5f0 1147 return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
nexpaq 0:6c56fb4bc5f0 1148
nexpaq 0:6c56fb4bc5f0 1149 w_ret = mbedtls_x509_crt_parse_file( chain, filename );
nexpaq 0:6c56fb4bc5f0 1150 if( w_ret < 0 )
nexpaq 0:6c56fb4bc5f0 1151 ret++;
nexpaq 0:6c56fb4bc5f0 1152 else
nexpaq 0:6c56fb4bc5f0 1153 ret += w_ret;
nexpaq 0:6c56fb4bc5f0 1154 }
nexpaq 0:6c56fb4bc5f0 1155 while( FindNextFileW( hFind, &file_data ) != 0 );
nexpaq 0:6c56fb4bc5f0 1156
nexpaq 0:6c56fb4bc5f0 1157 if( GetLastError() != ERROR_NO_MORE_FILES )
nexpaq 0:6c56fb4bc5f0 1158 ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
nexpaq 0:6c56fb4bc5f0 1159
nexpaq 0:6c56fb4bc5f0 1160 FindClose( hFind );
nexpaq 0:6c56fb4bc5f0 1161 #else /* _WIN32 */
nexpaq 0:6c56fb4bc5f0 1162 int t_ret;
nexpaq 0:6c56fb4bc5f0 1163 struct stat sb;
nexpaq 0:6c56fb4bc5f0 1164 struct dirent *entry;
nexpaq 0:6c56fb4bc5f0 1165 char entry_name[255];
nexpaq 0:6c56fb4bc5f0 1166 DIR *dir = opendir( path );
nexpaq 0:6c56fb4bc5f0 1167
nexpaq 0:6c56fb4bc5f0 1168 if( dir == NULL )
nexpaq 0:6c56fb4bc5f0 1169 return( MBEDTLS_ERR_X509_FILE_IO_ERROR );
nexpaq 0:6c56fb4bc5f0 1170
nexpaq 0:6c56fb4bc5f0 1171 #if defined(MBEDTLS_THREADING_PTHREAD)
nexpaq 0:6c56fb4bc5f0 1172 if( ( ret = mbedtls_mutex_lock( &mbedtls_threading_readdir_mutex ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1173 {
nexpaq 0:6c56fb4bc5f0 1174 closedir( dir );
nexpaq 0:6c56fb4bc5f0 1175 return( ret );
nexpaq 0:6c56fb4bc5f0 1176 }
nexpaq 0:6c56fb4bc5f0 1177 #endif
nexpaq 0:6c56fb4bc5f0 1178
nexpaq 0:6c56fb4bc5f0 1179 while( ( entry = readdir( dir ) ) != NULL )
nexpaq 0:6c56fb4bc5f0 1180 {
nexpaq 0:6c56fb4bc5f0 1181 mbedtls_snprintf( entry_name, sizeof entry_name, "%s/%s", path, entry->d_name );
nexpaq 0:6c56fb4bc5f0 1182
nexpaq 0:6c56fb4bc5f0 1183 if( stat( entry_name, &sb ) == -1 )
nexpaq 0:6c56fb4bc5f0 1184 {
nexpaq 0:6c56fb4bc5f0 1185 closedir( dir );
nexpaq 0:6c56fb4bc5f0 1186 ret = MBEDTLS_ERR_X509_FILE_IO_ERROR;
nexpaq 0:6c56fb4bc5f0 1187 goto cleanup;
nexpaq 0:6c56fb4bc5f0 1188 }
nexpaq 0:6c56fb4bc5f0 1189
nexpaq 0:6c56fb4bc5f0 1190 if( !S_ISREG( sb.st_mode ) )
nexpaq 0:6c56fb4bc5f0 1191 continue;
nexpaq 0:6c56fb4bc5f0 1192
nexpaq 0:6c56fb4bc5f0 1193 // Ignore parse errors
nexpaq 0:6c56fb4bc5f0 1194 //
nexpaq 0:6c56fb4bc5f0 1195 t_ret = mbedtls_x509_crt_parse_file( chain, entry_name );
nexpaq 0:6c56fb4bc5f0 1196 if( t_ret < 0 )
nexpaq 0:6c56fb4bc5f0 1197 ret++;
nexpaq 0:6c56fb4bc5f0 1198 else
nexpaq 0:6c56fb4bc5f0 1199 ret += t_ret;
nexpaq 0:6c56fb4bc5f0 1200 }
nexpaq 0:6c56fb4bc5f0 1201 closedir( dir );
nexpaq 0:6c56fb4bc5f0 1202
nexpaq 0:6c56fb4bc5f0 1203 cleanup:
nexpaq 0:6c56fb4bc5f0 1204 #if defined(MBEDTLS_THREADING_PTHREAD)
nexpaq 0:6c56fb4bc5f0 1205 if( mbedtls_mutex_unlock( &mbedtls_threading_readdir_mutex ) != 0 )
nexpaq 0:6c56fb4bc5f0 1206 ret = MBEDTLS_ERR_THREADING_MUTEX_ERROR;
nexpaq 0:6c56fb4bc5f0 1207 #endif
nexpaq 0:6c56fb4bc5f0 1208
nexpaq 0:6c56fb4bc5f0 1209 #endif /* _WIN32 */
nexpaq 0:6c56fb4bc5f0 1210
nexpaq 0:6c56fb4bc5f0 1211 return( ret );
nexpaq 0:6c56fb4bc5f0 1212 }
nexpaq 0:6c56fb4bc5f0 1213 #endif /* MBEDTLS_FS_IO */
nexpaq 0:6c56fb4bc5f0 1214
nexpaq 0:6c56fb4bc5f0 1215 static int x509_info_subject_alt_name( char **buf, size_t *size,
nexpaq 0:6c56fb4bc5f0 1216 const mbedtls_x509_sequence *subject_alt_name )
nexpaq 0:6c56fb4bc5f0 1217 {
nexpaq 0:6c56fb4bc5f0 1218 size_t i;
nexpaq 0:6c56fb4bc5f0 1219 size_t n = *size;
nexpaq 0:6c56fb4bc5f0 1220 char *p = *buf;
nexpaq 0:6c56fb4bc5f0 1221 const mbedtls_x509_sequence *cur = subject_alt_name;
nexpaq 0:6c56fb4bc5f0 1222 const char *sep = "";
nexpaq 0:6c56fb4bc5f0 1223 size_t sep_len = 0;
nexpaq 0:6c56fb4bc5f0 1224
nexpaq 0:6c56fb4bc5f0 1225 while( cur != NULL )
nexpaq 0:6c56fb4bc5f0 1226 {
nexpaq 0:6c56fb4bc5f0 1227 if( cur->buf.len + sep_len >= n )
nexpaq 0:6c56fb4bc5f0 1228 {
nexpaq 0:6c56fb4bc5f0 1229 *p = '\0';
nexpaq 0:6c56fb4bc5f0 1230 return( MBEDTLS_ERR_X509_BUFFER_TOO_SMALL );
nexpaq 0:6c56fb4bc5f0 1231 }
nexpaq 0:6c56fb4bc5f0 1232
nexpaq 0:6c56fb4bc5f0 1233 n -= cur->buf.len + sep_len;
nexpaq 0:6c56fb4bc5f0 1234 for( i = 0; i < sep_len; i++ )
nexpaq 0:6c56fb4bc5f0 1235 *p++ = sep[i];
nexpaq 0:6c56fb4bc5f0 1236 for( i = 0; i < cur->buf.len; i++ )
nexpaq 0:6c56fb4bc5f0 1237 *p++ = cur->buf.p[i];
nexpaq 0:6c56fb4bc5f0 1238
nexpaq 0:6c56fb4bc5f0 1239 sep = ", ";
nexpaq 0:6c56fb4bc5f0 1240 sep_len = 2;
nexpaq 0:6c56fb4bc5f0 1241
nexpaq 0:6c56fb4bc5f0 1242 cur = cur->next;
nexpaq 0:6c56fb4bc5f0 1243 }
nexpaq 0:6c56fb4bc5f0 1244
nexpaq 0:6c56fb4bc5f0 1245 *p = '\0';
nexpaq 0:6c56fb4bc5f0 1246
nexpaq 0:6c56fb4bc5f0 1247 *size = n;
nexpaq 0:6c56fb4bc5f0 1248 *buf = p;
nexpaq 0:6c56fb4bc5f0 1249
nexpaq 0:6c56fb4bc5f0 1250 return( 0 );
nexpaq 0:6c56fb4bc5f0 1251 }
nexpaq 0:6c56fb4bc5f0 1252
nexpaq 0:6c56fb4bc5f0 1253 #define PRINT_ITEM(i) \
nexpaq 0:6c56fb4bc5f0 1254 { \
nexpaq 0:6c56fb4bc5f0 1255 ret = mbedtls_snprintf( p, n, "%s" i, sep ); \
nexpaq 0:6c56fb4bc5f0 1256 MBEDTLS_X509_SAFE_SNPRINTF; \
nexpaq 0:6c56fb4bc5f0 1257 sep = ", "; \
nexpaq 0:6c56fb4bc5f0 1258 }
nexpaq 0:6c56fb4bc5f0 1259
nexpaq 0:6c56fb4bc5f0 1260 #define CERT_TYPE(type,name) \
nexpaq 0:6c56fb4bc5f0 1261 if( ns_cert_type & type ) \
nexpaq 0:6c56fb4bc5f0 1262 PRINT_ITEM( name );
nexpaq 0:6c56fb4bc5f0 1263
nexpaq 0:6c56fb4bc5f0 1264 static int x509_info_cert_type( char **buf, size_t *size,
nexpaq 0:6c56fb4bc5f0 1265 unsigned char ns_cert_type )
nexpaq 0:6c56fb4bc5f0 1266 {
nexpaq 0:6c56fb4bc5f0 1267 int ret;
nexpaq 0:6c56fb4bc5f0 1268 size_t n = *size;
nexpaq 0:6c56fb4bc5f0 1269 char *p = *buf;
nexpaq 0:6c56fb4bc5f0 1270 const char *sep = "";
nexpaq 0:6c56fb4bc5f0 1271
nexpaq 0:6c56fb4bc5f0 1272 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT, "SSL Client" );
nexpaq 0:6c56fb4bc5f0 1273 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER, "SSL Server" );
nexpaq 0:6c56fb4bc5f0 1274 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL, "Email" );
nexpaq 0:6c56fb4bc5f0 1275 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING, "Object Signing" );
nexpaq 0:6c56fb4bc5f0 1276 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_RESERVED, "Reserved" );
nexpaq 0:6c56fb4bc5f0 1277 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_SSL_CA, "SSL CA" );
nexpaq 0:6c56fb4bc5f0 1278 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA, "Email CA" );
nexpaq 0:6c56fb4bc5f0 1279 CERT_TYPE( MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA, "Object Signing CA" );
nexpaq 0:6c56fb4bc5f0 1280
nexpaq 0:6c56fb4bc5f0 1281 *size = n;
nexpaq 0:6c56fb4bc5f0 1282 *buf = p;
nexpaq 0:6c56fb4bc5f0 1283
nexpaq 0:6c56fb4bc5f0 1284 return( 0 );
nexpaq 0:6c56fb4bc5f0 1285 }
nexpaq 0:6c56fb4bc5f0 1286
nexpaq 0:6c56fb4bc5f0 1287 #define KEY_USAGE(code,name) \
nexpaq 0:6c56fb4bc5f0 1288 if( key_usage & code ) \
nexpaq 0:6c56fb4bc5f0 1289 PRINT_ITEM( name );
nexpaq 0:6c56fb4bc5f0 1290
nexpaq 0:6c56fb4bc5f0 1291 static int x509_info_key_usage( char **buf, size_t *size,
nexpaq 0:6c56fb4bc5f0 1292 unsigned int key_usage )
nexpaq 0:6c56fb4bc5f0 1293 {
nexpaq 0:6c56fb4bc5f0 1294 int ret;
nexpaq 0:6c56fb4bc5f0 1295 size_t n = *size;
nexpaq 0:6c56fb4bc5f0 1296 char *p = *buf;
nexpaq 0:6c56fb4bc5f0 1297 const char *sep = "";
nexpaq 0:6c56fb4bc5f0 1298
nexpaq 0:6c56fb4bc5f0 1299 KEY_USAGE( MBEDTLS_X509_KU_DIGITAL_SIGNATURE, "Digital Signature" );
nexpaq 0:6c56fb4bc5f0 1300 KEY_USAGE( MBEDTLS_X509_KU_NON_REPUDIATION, "Non Repudiation" );
nexpaq 0:6c56fb4bc5f0 1301 KEY_USAGE( MBEDTLS_X509_KU_KEY_ENCIPHERMENT, "Key Encipherment" );
nexpaq 0:6c56fb4bc5f0 1302 KEY_USAGE( MBEDTLS_X509_KU_DATA_ENCIPHERMENT, "Data Encipherment" );
nexpaq 0:6c56fb4bc5f0 1303 KEY_USAGE( MBEDTLS_X509_KU_KEY_AGREEMENT, "Key Agreement" );
nexpaq 0:6c56fb4bc5f0 1304 KEY_USAGE( MBEDTLS_X509_KU_KEY_CERT_SIGN, "Key Cert Sign" );
nexpaq 0:6c56fb4bc5f0 1305 KEY_USAGE( MBEDTLS_X509_KU_CRL_SIGN, "CRL Sign" );
nexpaq 0:6c56fb4bc5f0 1306 KEY_USAGE( MBEDTLS_X509_KU_ENCIPHER_ONLY, "Encipher Only" );
nexpaq 0:6c56fb4bc5f0 1307 KEY_USAGE( MBEDTLS_X509_KU_DECIPHER_ONLY, "Decipher Only" );
nexpaq 0:6c56fb4bc5f0 1308
nexpaq 0:6c56fb4bc5f0 1309 *size = n;
nexpaq 0:6c56fb4bc5f0 1310 *buf = p;
nexpaq 0:6c56fb4bc5f0 1311
nexpaq 0:6c56fb4bc5f0 1312 return( 0 );
nexpaq 0:6c56fb4bc5f0 1313 }
nexpaq 0:6c56fb4bc5f0 1314
nexpaq 0:6c56fb4bc5f0 1315 static int x509_info_ext_key_usage( char **buf, size_t *size,
nexpaq 0:6c56fb4bc5f0 1316 const mbedtls_x509_sequence *extended_key_usage )
nexpaq 0:6c56fb4bc5f0 1317 {
nexpaq 0:6c56fb4bc5f0 1318 int ret;
nexpaq 0:6c56fb4bc5f0 1319 const char *desc;
nexpaq 0:6c56fb4bc5f0 1320 size_t n = *size;
nexpaq 0:6c56fb4bc5f0 1321 char *p = *buf;
nexpaq 0:6c56fb4bc5f0 1322 const mbedtls_x509_sequence *cur = extended_key_usage;
nexpaq 0:6c56fb4bc5f0 1323 const char *sep = "";
nexpaq 0:6c56fb4bc5f0 1324
nexpaq 0:6c56fb4bc5f0 1325 while( cur != NULL )
nexpaq 0:6c56fb4bc5f0 1326 {
nexpaq 0:6c56fb4bc5f0 1327 if( mbedtls_oid_get_extended_key_usage( &cur->buf, &desc ) != 0 )
nexpaq 0:6c56fb4bc5f0 1328 desc = "???";
nexpaq 0:6c56fb4bc5f0 1329
nexpaq 0:6c56fb4bc5f0 1330 ret = mbedtls_snprintf( p, n, "%s%s", sep, desc );
nexpaq 0:6c56fb4bc5f0 1331 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1332
nexpaq 0:6c56fb4bc5f0 1333 sep = ", ";
nexpaq 0:6c56fb4bc5f0 1334
nexpaq 0:6c56fb4bc5f0 1335 cur = cur->next;
nexpaq 0:6c56fb4bc5f0 1336 }
nexpaq 0:6c56fb4bc5f0 1337
nexpaq 0:6c56fb4bc5f0 1338 *size = n;
nexpaq 0:6c56fb4bc5f0 1339 *buf = p;
nexpaq 0:6c56fb4bc5f0 1340
nexpaq 0:6c56fb4bc5f0 1341 return( 0 );
nexpaq 0:6c56fb4bc5f0 1342 }
nexpaq 0:6c56fb4bc5f0 1343
nexpaq 0:6c56fb4bc5f0 1344 /*
nexpaq 0:6c56fb4bc5f0 1345 * Return an informational string about the certificate.
nexpaq 0:6c56fb4bc5f0 1346 */
nexpaq 0:6c56fb4bc5f0 1347 #define BEFORE_COLON 18
nexpaq 0:6c56fb4bc5f0 1348 #define BC "18"
nexpaq 0:6c56fb4bc5f0 1349 int mbedtls_x509_crt_info( char *buf, size_t size, const char *prefix,
nexpaq 0:6c56fb4bc5f0 1350 const mbedtls_x509_crt *crt )
nexpaq 0:6c56fb4bc5f0 1351 {
nexpaq 0:6c56fb4bc5f0 1352 int ret;
nexpaq 0:6c56fb4bc5f0 1353 size_t n;
nexpaq 0:6c56fb4bc5f0 1354 char *p;
nexpaq 0:6c56fb4bc5f0 1355 char key_size_str[BEFORE_COLON];
nexpaq 0:6c56fb4bc5f0 1356
nexpaq 0:6c56fb4bc5f0 1357 p = buf;
nexpaq 0:6c56fb4bc5f0 1358 n = size;
nexpaq 0:6c56fb4bc5f0 1359
nexpaq 0:6c56fb4bc5f0 1360 if( NULL == crt )
nexpaq 0:6c56fb4bc5f0 1361 {
nexpaq 0:6c56fb4bc5f0 1362 ret = mbedtls_snprintf( p, n, "\nCertificate is uninitialised!\n" );
nexpaq 0:6c56fb4bc5f0 1363 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1364
nexpaq 0:6c56fb4bc5f0 1365 return( (int) ( size - n ) );
nexpaq 0:6c56fb4bc5f0 1366 }
nexpaq 0:6c56fb4bc5f0 1367
nexpaq 0:6c56fb4bc5f0 1368 ret = mbedtls_snprintf( p, n, "%scert. version : %d\n",
nexpaq 0:6c56fb4bc5f0 1369 prefix, crt->version );
nexpaq 0:6c56fb4bc5f0 1370 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1371 ret = mbedtls_snprintf( p, n, "%sserial number : ",
nexpaq 0:6c56fb4bc5f0 1372 prefix );
nexpaq 0:6c56fb4bc5f0 1373 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1374
nexpaq 0:6c56fb4bc5f0 1375 ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
nexpaq 0:6c56fb4bc5f0 1376 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1377
nexpaq 0:6c56fb4bc5f0 1378 ret = mbedtls_snprintf( p, n, "\n%sissuer name : ", prefix );
nexpaq 0:6c56fb4bc5f0 1379 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1380 ret = mbedtls_x509_dn_gets( p, n, &crt->issuer );
nexpaq 0:6c56fb4bc5f0 1381 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1382
nexpaq 0:6c56fb4bc5f0 1383 ret = mbedtls_snprintf( p, n, "\n%ssubject name : ", prefix );
nexpaq 0:6c56fb4bc5f0 1384 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1385 ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
nexpaq 0:6c56fb4bc5f0 1386 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1387
nexpaq 0:6c56fb4bc5f0 1388 ret = mbedtls_snprintf( p, n, "\n%sissued on : " \
nexpaq 0:6c56fb4bc5f0 1389 "%04d-%02d-%02d %02d:%02d:%02d", prefix,
nexpaq 0:6c56fb4bc5f0 1390 crt->valid_from.year, crt->valid_from.mon,
nexpaq 0:6c56fb4bc5f0 1391 crt->valid_from.day, crt->valid_from.hour,
nexpaq 0:6c56fb4bc5f0 1392 crt->valid_from.min, crt->valid_from.sec );
nexpaq 0:6c56fb4bc5f0 1393 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1394
nexpaq 0:6c56fb4bc5f0 1395 ret = mbedtls_snprintf( p, n, "\n%sexpires on : " \
nexpaq 0:6c56fb4bc5f0 1396 "%04d-%02d-%02d %02d:%02d:%02d", prefix,
nexpaq 0:6c56fb4bc5f0 1397 crt->valid_to.year, crt->valid_to.mon,
nexpaq 0:6c56fb4bc5f0 1398 crt->valid_to.day, crt->valid_to.hour,
nexpaq 0:6c56fb4bc5f0 1399 crt->valid_to.min, crt->valid_to.sec );
nexpaq 0:6c56fb4bc5f0 1400 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1401
nexpaq 0:6c56fb4bc5f0 1402 ret = mbedtls_snprintf( p, n, "\n%ssigned using : ", prefix );
nexpaq 0:6c56fb4bc5f0 1403 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1404
nexpaq 0:6c56fb4bc5f0 1405 ret = mbedtls_x509_sig_alg_gets( p, n, &crt->sig_oid, crt->sig_pk,
nexpaq 0:6c56fb4bc5f0 1406 crt->sig_md, crt->sig_opts );
nexpaq 0:6c56fb4bc5f0 1407 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1408
nexpaq 0:6c56fb4bc5f0 1409 /* Key size */
nexpaq 0:6c56fb4bc5f0 1410 if( ( ret = mbedtls_x509_key_size_helper( key_size_str, BEFORE_COLON,
nexpaq 0:6c56fb4bc5f0 1411 mbedtls_pk_get_name( &crt->pk ) ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1412 {
nexpaq 0:6c56fb4bc5f0 1413 return( ret );
nexpaq 0:6c56fb4bc5f0 1414 }
nexpaq 0:6c56fb4bc5f0 1415
nexpaq 0:6c56fb4bc5f0 1416 ret = mbedtls_snprintf( p, n, "\n%s%-" BC "s: %d bits", prefix, key_size_str,
nexpaq 0:6c56fb4bc5f0 1417 (int) mbedtls_pk_get_bitlen( &crt->pk ) );
nexpaq 0:6c56fb4bc5f0 1418 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1419
nexpaq 0:6c56fb4bc5f0 1420 /*
nexpaq 0:6c56fb4bc5f0 1421 * Optional extensions
nexpaq 0:6c56fb4bc5f0 1422 */
nexpaq 0:6c56fb4bc5f0 1423
nexpaq 0:6c56fb4bc5f0 1424 if( crt->ext_types & MBEDTLS_X509_EXT_BASIC_CONSTRAINTS )
nexpaq 0:6c56fb4bc5f0 1425 {
nexpaq 0:6c56fb4bc5f0 1426 ret = mbedtls_snprintf( p, n, "\n%sbasic constraints : CA=%s", prefix,
nexpaq 0:6c56fb4bc5f0 1427 crt->ca_istrue ? "true" : "false" );
nexpaq 0:6c56fb4bc5f0 1428 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1429
nexpaq 0:6c56fb4bc5f0 1430 if( crt->max_pathlen > 0 )
nexpaq 0:6c56fb4bc5f0 1431 {
nexpaq 0:6c56fb4bc5f0 1432 ret = mbedtls_snprintf( p, n, ", max_pathlen=%d", crt->max_pathlen - 1 );
nexpaq 0:6c56fb4bc5f0 1433 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1434 }
nexpaq 0:6c56fb4bc5f0 1435 }
nexpaq 0:6c56fb4bc5f0 1436
nexpaq 0:6c56fb4bc5f0 1437 if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
nexpaq 0:6c56fb4bc5f0 1438 {
nexpaq 0:6c56fb4bc5f0 1439 ret = mbedtls_snprintf( p, n, "\n%ssubject alt name : ", prefix );
nexpaq 0:6c56fb4bc5f0 1440 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1441
nexpaq 0:6c56fb4bc5f0 1442 if( ( ret = x509_info_subject_alt_name( &p, &n,
nexpaq 0:6c56fb4bc5f0 1443 &crt->subject_alt_names ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1444 return( ret );
nexpaq 0:6c56fb4bc5f0 1445 }
nexpaq 0:6c56fb4bc5f0 1446
nexpaq 0:6c56fb4bc5f0 1447 if( crt->ext_types & MBEDTLS_X509_EXT_NS_CERT_TYPE )
nexpaq 0:6c56fb4bc5f0 1448 {
nexpaq 0:6c56fb4bc5f0 1449 ret = mbedtls_snprintf( p, n, "\n%scert. type : ", prefix );
nexpaq 0:6c56fb4bc5f0 1450 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1451
nexpaq 0:6c56fb4bc5f0 1452 if( ( ret = x509_info_cert_type( &p, &n, crt->ns_cert_type ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1453 return( ret );
nexpaq 0:6c56fb4bc5f0 1454 }
nexpaq 0:6c56fb4bc5f0 1455
nexpaq 0:6c56fb4bc5f0 1456 if( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE )
nexpaq 0:6c56fb4bc5f0 1457 {
nexpaq 0:6c56fb4bc5f0 1458 ret = mbedtls_snprintf( p, n, "\n%skey usage : ", prefix );
nexpaq 0:6c56fb4bc5f0 1459 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1460
nexpaq 0:6c56fb4bc5f0 1461 if( ( ret = x509_info_key_usage( &p, &n, crt->key_usage ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1462 return( ret );
nexpaq 0:6c56fb4bc5f0 1463 }
nexpaq 0:6c56fb4bc5f0 1464
nexpaq 0:6c56fb4bc5f0 1465 if( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE )
nexpaq 0:6c56fb4bc5f0 1466 {
nexpaq 0:6c56fb4bc5f0 1467 ret = mbedtls_snprintf( p, n, "\n%sext key usage : ", prefix );
nexpaq 0:6c56fb4bc5f0 1468 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1469
nexpaq 0:6c56fb4bc5f0 1470 if( ( ret = x509_info_ext_key_usage( &p, &n,
nexpaq 0:6c56fb4bc5f0 1471 &crt->ext_key_usage ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 1472 return( ret );
nexpaq 0:6c56fb4bc5f0 1473 }
nexpaq 0:6c56fb4bc5f0 1474
nexpaq 0:6c56fb4bc5f0 1475 ret = mbedtls_snprintf( p, n, "\n" );
nexpaq 0:6c56fb4bc5f0 1476 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1477
nexpaq 0:6c56fb4bc5f0 1478 return( (int) ( size - n ) );
nexpaq 0:6c56fb4bc5f0 1479 }
nexpaq 0:6c56fb4bc5f0 1480
nexpaq 0:6c56fb4bc5f0 1481 struct x509_crt_verify_string {
nexpaq 0:6c56fb4bc5f0 1482 int code;
nexpaq 0:6c56fb4bc5f0 1483 const char *string;
nexpaq 0:6c56fb4bc5f0 1484 };
nexpaq 0:6c56fb4bc5f0 1485
nexpaq 0:6c56fb4bc5f0 1486 static const struct x509_crt_verify_string x509_crt_verify_strings[] = {
nexpaq 0:6c56fb4bc5f0 1487 { MBEDTLS_X509_BADCERT_EXPIRED, "The certificate validity has expired" },
nexpaq 0:6c56fb4bc5f0 1488 { MBEDTLS_X509_BADCERT_REVOKED, "The certificate has been revoked (is on a CRL)" },
nexpaq 0:6c56fb4bc5f0 1489 { MBEDTLS_X509_BADCERT_CN_MISMATCH, "The certificate Common Name (CN) does not match with the expected CN" },
nexpaq 0:6c56fb4bc5f0 1490 { MBEDTLS_X509_BADCERT_NOT_TRUSTED, "The certificate is not correctly signed by the trusted CA" },
nexpaq 0:6c56fb4bc5f0 1491 { MBEDTLS_X509_BADCRL_NOT_TRUSTED, "The CRL is not correctly signed by the trusted CA" },
nexpaq 0:6c56fb4bc5f0 1492 { MBEDTLS_X509_BADCRL_EXPIRED, "The CRL is expired" },
nexpaq 0:6c56fb4bc5f0 1493 { MBEDTLS_X509_BADCERT_MISSING, "Certificate was missing" },
nexpaq 0:6c56fb4bc5f0 1494 { MBEDTLS_X509_BADCERT_SKIP_VERIFY, "Certificate verification was skipped" },
nexpaq 0:6c56fb4bc5f0 1495 { MBEDTLS_X509_BADCERT_OTHER, "Other reason (can be used by verify callback)" },
nexpaq 0:6c56fb4bc5f0 1496 { MBEDTLS_X509_BADCERT_FUTURE, "The certificate validity starts in the future" },
nexpaq 0:6c56fb4bc5f0 1497 { MBEDTLS_X509_BADCRL_FUTURE, "The CRL is from the future" },
nexpaq 0:6c56fb4bc5f0 1498 { MBEDTLS_X509_BADCERT_KEY_USAGE, "Usage does not match the keyUsage extension" },
nexpaq 0:6c56fb4bc5f0 1499 { MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, "Usage does not match the extendedKeyUsage extension" },
nexpaq 0:6c56fb4bc5f0 1500 { MBEDTLS_X509_BADCERT_NS_CERT_TYPE, "Usage does not match the nsCertType extension" },
nexpaq 0:6c56fb4bc5f0 1501 { MBEDTLS_X509_BADCERT_BAD_MD, "The certificate is signed with an unacceptable hash." },
nexpaq 0:6c56fb4bc5f0 1502 { MBEDTLS_X509_BADCERT_BAD_PK, "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
nexpaq 0:6c56fb4bc5f0 1503 { MBEDTLS_X509_BADCERT_BAD_KEY, "The certificate is signed with an unacceptable key (eg bad curve, RSA too short)." },
nexpaq 0:6c56fb4bc5f0 1504 { MBEDTLS_X509_BADCRL_BAD_MD, "The CRL is signed with an unacceptable hash." },
nexpaq 0:6c56fb4bc5f0 1505 { MBEDTLS_X509_BADCRL_BAD_PK, "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA)." },
nexpaq 0:6c56fb4bc5f0 1506 { MBEDTLS_X509_BADCRL_BAD_KEY, "The CRL is signed with an unacceptable key (eg bad curve, RSA too short)." },
nexpaq 0:6c56fb4bc5f0 1507 { 0, NULL }
nexpaq 0:6c56fb4bc5f0 1508 };
nexpaq 0:6c56fb4bc5f0 1509
nexpaq 0:6c56fb4bc5f0 1510 int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
nexpaq 0:6c56fb4bc5f0 1511 uint32_t flags )
nexpaq 0:6c56fb4bc5f0 1512 {
nexpaq 0:6c56fb4bc5f0 1513 int ret;
nexpaq 0:6c56fb4bc5f0 1514 const struct x509_crt_verify_string *cur;
nexpaq 0:6c56fb4bc5f0 1515 char *p = buf;
nexpaq 0:6c56fb4bc5f0 1516 size_t n = size;
nexpaq 0:6c56fb4bc5f0 1517
nexpaq 0:6c56fb4bc5f0 1518 for( cur = x509_crt_verify_strings; cur->string != NULL ; cur++ )
nexpaq 0:6c56fb4bc5f0 1519 {
nexpaq 0:6c56fb4bc5f0 1520 if( ( flags & cur->code ) == 0 )
nexpaq 0:6c56fb4bc5f0 1521 continue;
nexpaq 0:6c56fb4bc5f0 1522
nexpaq 0:6c56fb4bc5f0 1523 ret = mbedtls_snprintf( p, n, "%s%s\n", prefix, cur->string );
nexpaq 0:6c56fb4bc5f0 1524 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1525 flags ^= cur->code;
nexpaq 0:6c56fb4bc5f0 1526 }
nexpaq 0:6c56fb4bc5f0 1527
nexpaq 0:6c56fb4bc5f0 1528 if( flags != 0 )
nexpaq 0:6c56fb4bc5f0 1529 {
nexpaq 0:6c56fb4bc5f0 1530 ret = mbedtls_snprintf( p, n, "%sUnknown reason "
nexpaq 0:6c56fb4bc5f0 1531 "(this should not happen)\n", prefix );
nexpaq 0:6c56fb4bc5f0 1532 MBEDTLS_X509_SAFE_SNPRINTF;
nexpaq 0:6c56fb4bc5f0 1533 }
nexpaq 0:6c56fb4bc5f0 1534
nexpaq 0:6c56fb4bc5f0 1535 return( (int) ( size - n ) );
nexpaq 0:6c56fb4bc5f0 1536 }
nexpaq 0:6c56fb4bc5f0 1537
nexpaq 0:6c56fb4bc5f0 1538 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
nexpaq 0:6c56fb4bc5f0 1539 int mbedtls_x509_crt_check_key_usage( const mbedtls_x509_crt *crt,
nexpaq 0:6c56fb4bc5f0 1540 unsigned int usage )
nexpaq 0:6c56fb4bc5f0 1541 {
nexpaq 0:6c56fb4bc5f0 1542 unsigned int usage_must, usage_may;
nexpaq 0:6c56fb4bc5f0 1543 unsigned int may_mask = MBEDTLS_X509_KU_ENCIPHER_ONLY
nexpaq 0:6c56fb4bc5f0 1544 | MBEDTLS_X509_KU_DECIPHER_ONLY;
nexpaq 0:6c56fb4bc5f0 1545
nexpaq 0:6c56fb4bc5f0 1546 if( ( crt->ext_types & MBEDTLS_X509_EXT_KEY_USAGE ) == 0 )
nexpaq 0:6c56fb4bc5f0 1547 return( 0 );
nexpaq 0:6c56fb4bc5f0 1548
nexpaq 0:6c56fb4bc5f0 1549 usage_must = usage & ~may_mask;
nexpaq 0:6c56fb4bc5f0 1550
nexpaq 0:6c56fb4bc5f0 1551 if( ( ( crt->key_usage & ~may_mask ) & usage_must ) != usage_must )
nexpaq 0:6c56fb4bc5f0 1552 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 1553
nexpaq 0:6c56fb4bc5f0 1554 usage_may = usage & may_mask;
nexpaq 0:6c56fb4bc5f0 1555
nexpaq 0:6c56fb4bc5f0 1556 if( ( ( crt->key_usage & may_mask ) | usage_may ) != usage_may )
nexpaq 0:6c56fb4bc5f0 1557 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 1558
nexpaq 0:6c56fb4bc5f0 1559 return( 0 );
nexpaq 0:6c56fb4bc5f0 1560 }
nexpaq 0:6c56fb4bc5f0 1561 #endif
nexpaq 0:6c56fb4bc5f0 1562
nexpaq 0:6c56fb4bc5f0 1563 #if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
nexpaq 0:6c56fb4bc5f0 1564 int mbedtls_x509_crt_check_extended_key_usage( const mbedtls_x509_crt *crt,
nexpaq 0:6c56fb4bc5f0 1565 const char *usage_oid,
nexpaq 0:6c56fb4bc5f0 1566 size_t usage_len )
nexpaq 0:6c56fb4bc5f0 1567 {
nexpaq 0:6c56fb4bc5f0 1568 const mbedtls_x509_sequence *cur;
nexpaq 0:6c56fb4bc5f0 1569
nexpaq 0:6c56fb4bc5f0 1570 /* Extension is not mandatory, absent means no restriction */
nexpaq 0:6c56fb4bc5f0 1571 if( ( crt->ext_types & MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE ) == 0 )
nexpaq 0:6c56fb4bc5f0 1572 return( 0 );
nexpaq 0:6c56fb4bc5f0 1573
nexpaq 0:6c56fb4bc5f0 1574 /*
nexpaq 0:6c56fb4bc5f0 1575 * Look for the requested usage (or wildcard ANY) in our list
nexpaq 0:6c56fb4bc5f0 1576 */
nexpaq 0:6c56fb4bc5f0 1577 for( cur = &crt->ext_key_usage; cur != NULL; cur = cur->next )
nexpaq 0:6c56fb4bc5f0 1578 {
nexpaq 0:6c56fb4bc5f0 1579 const mbedtls_x509_buf *cur_oid = &cur->buf;
nexpaq 0:6c56fb4bc5f0 1580
nexpaq 0:6c56fb4bc5f0 1581 if( cur_oid->len == usage_len &&
nexpaq 0:6c56fb4bc5f0 1582 memcmp( cur_oid->p, usage_oid, usage_len ) == 0 )
nexpaq 0:6c56fb4bc5f0 1583 {
nexpaq 0:6c56fb4bc5f0 1584 return( 0 );
nexpaq 0:6c56fb4bc5f0 1585 }
nexpaq 0:6c56fb4bc5f0 1586
nexpaq 0:6c56fb4bc5f0 1587 if( MBEDTLS_OID_CMP( MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE, cur_oid ) == 0 )
nexpaq 0:6c56fb4bc5f0 1588 return( 0 );
nexpaq 0:6c56fb4bc5f0 1589 }
nexpaq 0:6c56fb4bc5f0 1590
nexpaq 0:6c56fb4bc5f0 1591 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 1592 }
nexpaq 0:6c56fb4bc5f0 1593 #endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
nexpaq 0:6c56fb4bc5f0 1594
nexpaq 0:6c56fb4bc5f0 1595 #if defined(MBEDTLS_X509_CRL_PARSE_C)
nexpaq 0:6c56fb4bc5f0 1596 /*
nexpaq 0:6c56fb4bc5f0 1597 * Return 1 if the certificate is revoked, or 0 otherwise.
nexpaq 0:6c56fb4bc5f0 1598 */
nexpaq 0:6c56fb4bc5f0 1599 int mbedtls_x509_crt_is_revoked( const mbedtls_x509_crt *crt, const mbedtls_x509_crl *crl )
nexpaq 0:6c56fb4bc5f0 1600 {
nexpaq 0:6c56fb4bc5f0 1601 const mbedtls_x509_crl_entry *cur = &crl->entry;
nexpaq 0:6c56fb4bc5f0 1602
nexpaq 0:6c56fb4bc5f0 1603 while( cur != NULL && cur->serial.len != 0 )
nexpaq 0:6c56fb4bc5f0 1604 {
nexpaq 0:6c56fb4bc5f0 1605 if( crt->serial.len == cur->serial.len &&
nexpaq 0:6c56fb4bc5f0 1606 memcmp( crt->serial.p, cur->serial.p, crt->serial.len ) == 0 )
nexpaq 0:6c56fb4bc5f0 1607 {
nexpaq 0:6c56fb4bc5f0 1608 if( mbedtls_x509_time_is_past( &cur->revocation_date ) )
nexpaq 0:6c56fb4bc5f0 1609 return( 1 );
nexpaq 0:6c56fb4bc5f0 1610 }
nexpaq 0:6c56fb4bc5f0 1611
nexpaq 0:6c56fb4bc5f0 1612 cur = cur->next;
nexpaq 0:6c56fb4bc5f0 1613 }
nexpaq 0:6c56fb4bc5f0 1614
nexpaq 0:6c56fb4bc5f0 1615 return( 0 );
nexpaq 0:6c56fb4bc5f0 1616 }
nexpaq 0:6c56fb4bc5f0 1617
nexpaq 0:6c56fb4bc5f0 1618 /*
nexpaq 0:6c56fb4bc5f0 1619 * Check that the given certificate is not revoked according to the CRL.
nexpaq 0:6c56fb4bc5f0 1620 * Skip validation is no CRL for the given CA is present.
nexpaq 0:6c56fb4bc5f0 1621 */
nexpaq 0:6c56fb4bc5f0 1622 static int x509_crt_verifycrl( mbedtls_x509_crt *crt, mbedtls_x509_crt *ca,
nexpaq 0:6c56fb4bc5f0 1623 mbedtls_x509_crl *crl_list,
nexpaq 0:6c56fb4bc5f0 1624 const mbedtls_x509_crt_profile *profile )
nexpaq 0:6c56fb4bc5f0 1625 {
nexpaq 0:6c56fb4bc5f0 1626 int flags = 0;
nexpaq 0:6c56fb4bc5f0 1627 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
nexpaq 0:6c56fb4bc5f0 1628 const mbedtls_md_info_t *md_info;
nexpaq 0:6c56fb4bc5f0 1629
nexpaq 0:6c56fb4bc5f0 1630 if( ca == NULL )
nexpaq 0:6c56fb4bc5f0 1631 return( flags );
nexpaq 0:6c56fb4bc5f0 1632
nexpaq 0:6c56fb4bc5f0 1633 while( crl_list != NULL )
nexpaq 0:6c56fb4bc5f0 1634 {
nexpaq 0:6c56fb4bc5f0 1635 if( crl_list->version == 0 ||
nexpaq 0:6c56fb4bc5f0 1636 crl_list->issuer_raw.len != ca->subject_raw.len ||
nexpaq 0:6c56fb4bc5f0 1637 memcmp( crl_list->issuer_raw.p, ca->subject_raw.p,
nexpaq 0:6c56fb4bc5f0 1638 crl_list->issuer_raw.len ) != 0 )
nexpaq 0:6c56fb4bc5f0 1639 {
nexpaq 0:6c56fb4bc5f0 1640 crl_list = crl_list->next;
nexpaq 0:6c56fb4bc5f0 1641 continue;
nexpaq 0:6c56fb4bc5f0 1642 }
nexpaq 0:6c56fb4bc5f0 1643
nexpaq 0:6c56fb4bc5f0 1644 /*
nexpaq 0:6c56fb4bc5f0 1645 * Check if the CA is configured to sign CRLs
nexpaq 0:6c56fb4bc5f0 1646 */
nexpaq 0:6c56fb4bc5f0 1647 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
nexpaq 0:6c56fb4bc5f0 1648 if( mbedtls_x509_crt_check_key_usage( ca, MBEDTLS_X509_KU_CRL_SIGN ) != 0 )
nexpaq 0:6c56fb4bc5f0 1649 {
nexpaq 0:6c56fb4bc5f0 1650 flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 1651 break;
nexpaq 0:6c56fb4bc5f0 1652 }
nexpaq 0:6c56fb4bc5f0 1653 #endif
nexpaq 0:6c56fb4bc5f0 1654
nexpaq 0:6c56fb4bc5f0 1655 /*
nexpaq 0:6c56fb4bc5f0 1656 * Check if CRL is correctly signed by the trusted CA
nexpaq 0:6c56fb4bc5f0 1657 */
nexpaq 0:6c56fb4bc5f0 1658 if( x509_profile_check_md_alg( profile, crl_list->sig_md ) != 0 )
nexpaq 0:6c56fb4bc5f0 1659 flags |= MBEDTLS_X509_BADCRL_BAD_MD;
nexpaq 0:6c56fb4bc5f0 1660
nexpaq 0:6c56fb4bc5f0 1661 if( x509_profile_check_pk_alg( profile, crl_list->sig_pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 1662 flags |= MBEDTLS_X509_BADCRL_BAD_PK;
nexpaq 0:6c56fb4bc5f0 1663
nexpaq 0:6c56fb4bc5f0 1664 md_info = mbedtls_md_info_from_type( crl_list->sig_md );
nexpaq 0:6c56fb4bc5f0 1665 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 1666 {
nexpaq 0:6c56fb4bc5f0 1667 /*
nexpaq 0:6c56fb4bc5f0 1668 * Cannot check 'unknown' hash
nexpaq 0:6c56fb4bc5f0 1669 */
nexpaq 0:6c56fb4bc5f0 1670 flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 1671 break;
nexpaq 0:6c56fb4bc5f0 1672 }
nexpaq 0:6c56fb4bc5f0 1673
nexpaq 0:6c56fb4bc5f0 1674 mbedtls_md( md_info, crl_list->tbs.p, crl_list->tbs.len, hash );
nexpaq 0:6c56fb4bc5f0 1675
nexpaq 0:6c56fb4bc5f0 1676 if( x509_profile_check_key( profile, crl_list->sig_pk, &ca->pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 1677 flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
nexpaq 0:6c56fb4bc5f0 1678
nexpaq 0:6c56fb4bc5f0 1679 if( mbedtls_pk_verify_ext( crl_list->sig_pk, crl_list->sig_opts, &ca->pk,
nexpaq 0:6c56fb4bc5f0 1680 crl_list->sig_md, hash, mbedtls_md_get_size( md_info ),
nexpaq 0:6c56fb4bc5f0 1681 crl_list->sig.p, crl_list->sig.len ) != 0 )
nexpaq 0:6c56fb4bc5f0 1682 {
nexpaq 0:6c56fb4bc5f0 1683 flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 1684 break;
nexpaq 0:6c56fb4bc5f0 1685 }
nexpaq 0:6c56fb4bc5f0 1686
nexpaq 0:6c56fb4bc5f0 1687 /*
nexpaq 0:6c56fb4bc5f0 1688 * Check for validity of CRL (Do not drop out)
nexpaq 0:6c56fb4bc5f0 1689 */
nexpaq 0:6c56fb4bc5f0 1690 if( mbedtls_x509_time_is_past( &crl_list->next_update ) )
nexpaq 0:6c56fb4bc5f0 1691 flags |= MBEDTLS_X509_BADCRL_EXPIRED;
nexpaq 0:6c56fb4bc5f0 1692
nexpaq 0:6c56fb4bc5f0 1693 if( mbedtls_x509_time_is_future( &crl_list->this_update ) )
nexpaq 0:6c56fb4bc5f0 1694 flags |= MBEDTLS_X509_BADCRL_FUTURE;
nexpaq 0:6c56fb4bc5f0 1695
nexpaq 0:6c56fb4bc5f0 1696 /*
nexpaq 0:6c56fb4bc5f0 1697 * Check if certificate is revoked
nexpaq 0:6c56fb4bc5f0 1698 */
nexpaq 0:6c56fb4bc5f0 1699 if( mbedtls_x509_crt_is_revoked( crt, crl_list ) )
nexpaq 0:6c56fb4bc5f0 1700 {
nexpaq 0:6c56fb4bc5f0 1701 flags |= MBEDTLS_X509_BADCERT_REVOKED;
nexpaq 0:6c56fb4bc5f0 1702 break;
nexpaq 0:6c56fb4bc5f0 1703 }
nexpaq 0:6c56fb4bc5f0 1704
nexpaq 0:6c56fb4bc5f0 1705 crl_list = crl_list->next;
nexpaq 0:6c56fb4bc5f0 1706 }
nexpaq 0:6c56fb4bc5f0 1707
nexpaq 0:6c56fb4bc5f0 1708 return( flags );
nexpaq 0:6c56fb4bc5f0 1709 }
nexpaq 0:6c56fb4bc5f0 1710 #endif /* MBEDTLS_X509_CRL_PARSE_C */
nexpaq 0:6c56fb4bc5f0 1711
nexpaq 0:6c56fb4bc5f0 1712 /*
nexpaq 0:6c56fb4bc5f0 1713 * Like memcmp, but case-insensitive and always returns -1 if different
nexpaq 0:6c56fb4bc5f0 1714 */
nexpaq 0:6c56fb4bc5f0 1715 static int x509_memcasecmp( const void *s1, const void *s2, size_t len )
nexpaq 0:6c56fb4bc5f0 1716 {
nexpaq 0:6c56fb4bc5f0 1717 size_t i;
nexpaq 0:6c56fb4bc5f0 1718 unsigned char diff;
nexpaq 0:6c56fb4bc5f0 1719 const unsigned char *n1 = s1, *n2 = s2;
nexpaq 0:6c56fb4bc5f0 1720
nexpaq 0:6c56fb4bc5f0 1721 for( i = 0; i < len; i++ )
nexpaq 0:6c56fb4bc5f0 1722 {
nexpaq 0:6c56fb4bc5f0 1723 diff = n1[i] ^ n2[i];
nexpaq 0:6c56fb4bc5f0 1724
nexpaq 0:6c56fb4bc5f0 1725 if( diff == 0 )
nexpaq 0:6c56fb4bc5f0 1726 continue;
nexpaq 0:6c56fb4bc5f0 1727
nexpaq 0:6c56fb4bc5f0 1728 if( diff == 32 &&
nexpaq 0:6c56fb4bc5f0 1729 ( ( n1[i] >= 'a' && n1[i] <= 'z' ) ||
nexpaq 0:6c56fb4bc5f0 1730 ( n1[i] >= 'A' && n1[i] <= 'Z' ) ) )
nexpaq 0:6c56fb4bc5f0 1731 {
nexpaq 0:6c56fb4bc5f0 1732 continue;
nexpaq 0:6c56fb4bc5f0 1733 }
nexpaq 0:6c56fb4bc5f0 1734
nexpaq 0:6c56fb4bc5f0 1735 return( -1 );
nexpaq 0:6c56fb4bc5f0 1736 }
nexpaq 0:6c56fb4bc5f0 1737
nexpaq 0:6c56fb4bc5f0 1738 return( 0 );
nexpaq 0:6c56fb4bc5f0 1739 }
nexpaq 0:6c56fb4bc5f0 1740
nexpaq 0:6c56fb4bc5f0 1741 /*
nexpaq 0:6c56fb4bc5f0 1742 * Return 0 if name matches wildcard, -1 otherwise
nexpaq 0:6c56fb4bc5f0 1743 */
nexpaq 0:6c56fb4bc5f0 1744 static int x509_check_wildcard( const char *cn, mbedtls_x509_buf *name )
nexpaq 0:6c56fb4bc5f0 1745 {
nexpaq 0:6c56fb4bc5f0 1746 size_t i;
nexpaq 0:6c56fb4bc5f0 1747 size_t cn_idx = 0, cn_len = strlen( cn );
nexpaq 0:6c56fb4bc5f0 1748
nexpaq 0:6c56fb4bc5f0 1749 if( name->len < 3 || name->p[0] != '*' || name->p[1] != '.' )
nexpaq 0:6c56fb4bc5f0 1750 return( 0 );
nexpaq 0:6c56fb4bc5f0 1751
nexpaq 0:6c56fb4bc5f0 1752 for( i = 0; i < cn_len; ++i )
nexpaq 0:6c56fb4bc5f0 1753 {
nexpaq 0:6c56fb4bc5f0 1754 if( cn[i] == '.' )
nexpaq 0:6c56fb4bc5f0 1755 {
nexpaq 0:6c56fb4bc5f0 1756 cn_idx = i;
nexpaq 0:6c56fb4bc5f0 1757 break;
nexpaq 0:6c56fb4bc5f0 1758 }
nexpaq 0:6c56fb4bc5f0 1759 }
nexpaq 0:6c56fb4bc5f0 1760
nexpaq 0:6c56fb4bc5f0 1761 if( cn_idx == 0 )
nexpaq 0:6c56fb4bc5f0 1762 return( -1 );
nexpaq 0:6c56fb4bc5f0 1763
nexpaq 0:6c56fb4bc5f0 1764 if( cn_len - cn_idx == name->len - 1 &&
nexpaq 0:6c56fb4bc5f0 1765 x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 )
nexpaq 0:6c56fb4bc5f0 1766 {
nexpaq 0:6c56fb4bc5f0 1767 return( 0 );
nexpaq 0:6c56fb4bc5f0 1768 }
nexpaq 0:6c56fb4bc5f0 1769
nexpaq 0:6c56fb4bc5f0 1770 return( -1 );
nexpaq 0:6c56fb4bc5f0 1771 }
nexpaq 0:6c56fb4bc5f0 1772
nexpaq 0:6c56fb4bc5f0 1773 /*
nexpaq 0:6c56fb4bc5f0 1774 * Compare two X.509 strings, case-insensitive, and allowing for some encoding
nexpaq 0:6c56fb4bc5f0 1775 * variations (but not all).
nexpaq 0:6c56fb4bc5f0 1776 *
nexpaq 0:6c56fb4bc5f0 1777 * Return 0 if equal, -1 otherwise.
nexpaq 0:6c56fb4bc5f0 1778 */
nexpaq 0:6c56fb4bc5f0 1779 static int x509_string_cmp( const mbedtls_x509_buf *a, const mbedtls_x509_buf *b )
nexpaq 0:6c56fb4bc5f0 1780 {
nexpaq 0:6c56fb4bc5f0 1781 if( a->tag == b->tag &&
nexpaq 0:6c56fb4bc5f0 1782 a->len == b->len &&
nexpaq 0:6c56fb4bc5f0 1783 memcmp( a->p, b->p, b->len ) == 0 )
nexpaq 0:6c56fb4bc5f0 1784 {
nexpaq 0:6c56fb4bc5f0 1785 return( 0 );
nexpaq 0:6c56fb4bc5f0 1786 }
nexpaq 0:6c56fb4bc5f0 1787
nexpaq 0:6c56fb4bc5f0 1788 if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
nexpaq 0:6c56fb4bc5f0 1789 ( b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) &&
nexpaq 0:6c56fb4bc5f0 1790 a->len == b->len &&
nexpaq 0:6c56fb4bc5f0 1791 x509_memcasecmp( a->p, b->p, b->len ) == 0 )
nexpaq 0:6c56fb4bc5f0 1792 {
nexpaq 0:6c56fb4bc5f0 1793 return( 0 );
nexpaq 0:6c56fb4bc5f0 1794 }
nexpaq 0:6c56fb4bc5f0 1795
nexpaq 0:6c56fb4bc5f0 1796 return( -1 );
nexpaq 0:6c56fb4bc5f0 1797 }
nexpaq 0:6c56fb4bc5f0 1798
nexpaq 0:6c56fb4bc5f0 1799 /*
nexpaq 0:6c56fb4bc5f0 1800 * Compare two X.509 Names (aka rdnSequence).
nexpaq 0:6c56fb4bc5f0 1801 *
nexpaq 0:6c56fb4bc5f0 1802 * See RFC 5280 section 7.1, though we don't implement the whole algorithm:
nexpaq 0:6c56fb4bc5f0 1803 * we sometimes return unequal when the full algorithm would return equal,
nexpaq 0:6c56fb4bc5f0 1804 * but never the other way. (In particular, we don't do Unicode normalisation
nexpaq 0:6c56fb4bc5f0 1805 * or space folding.)
nexpaq 0:6c56fb4bc5f0 1806 *
nexpaq 0:6c56fb4bc5f0 1807 * Return 0 if equal, -1 otherwise.
nexpaq 0:6c56fb4bc5f0 1808 */
nexpaq 0:6c56fb4bc5f0 1809 static int x509_name_cmp( const mbedtls_x509_name *a, const mbedtls_x509_name *b )
nexpaq 0:6c56fb4bc5f0 1810 {
nexpaq 0:6c56fb4bc5f0 1811 /* Avoid recursion, it might not be optimised by the compiler */
nexpaq 0:6c56fb4bc5f0 1812 while( a != NULL || b != NULL )
nexpaq 0:6c56fb4bc5f0 1813 {
nexpaq 0:6c56fb4bc5f0 1814 if( a == NULL || b == NULL )
nexpaq 0:6c56fb4bc5f0 1815 return( -1 );
nexpaq 0:6c56fb4bc5f0 1816
nexpaq 0:6c56fb4bc5f0 1817 /* type */
nexpaq 0:6c56fb4bc5f0 1818 if( a->oid.tag != b->oid.tag ||
nexpaq 0:6c56fb4bc5f0 1819 a->oid.len != b->oid.len ||
nexpaq 0:6c56fb4bc5f0 1820 memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 )
nexpaq 0:6c56fb4bc5f0 1821 {
nexpaq 0:6c56fb4bc5f0 1822 return( -1 );
nexpaq 0:6c56fb4bc5f0 1823 }
nexpaq 0:6c56fb4bc5f0 1824
nexpaq 0:6c56fb4bc5f0 1825 /* value */
nexpaq 0:6c56fb4bc5f0 1826 if( x509_string_cmp( &a->val, &b->val ) != 0 )
nexpaq 0:6c56fb4bc5f0 1827 return( -1 );
nexpaq 0:6c56fb4bc5f0 1828
nexpaq 0:6c56fb4bc5f0 1829 /* structure of the list of sets */
nexpaq 0:6c56fb4bc5f0 1830 if( a->next_merged != b->next_merged )
nexpaq 0:6c56fb4bc5f0 1831 return( -1 );
nexpaq 0:6c56fb4bc5f0 1832
nexpaq 0:6c56fb4bc5f0 1833 a = a->next;
nexpaq 0:6c56fb4bc5f0 1834 b = b->next;
nexpaq 0:6c56fb4bc5f0 1835 }
nexpaq 0:6c56fb4bc5f0 1836
nexpaq 0:6c56fb4bc5f0 1837 /* a == NULL == b */
nexpaq 0:6c56fb4bc5f0 1838 return( 0 );
nexpaq 0:6c56fb4bc5f0 1839 }
nexpaq 0:6c56fb4bc5f0 1840
nexpaq 0:6c56fb4bc5f0 1841 /*
nexpaq 0:6c56fb4bc5f0 1842 * Check if 'parent' is a suitable parent (signing CA) for 'child'.
nexpaq 0:6c56fb4bc5f0 1843 * Return 0 if yes, -1 if not.
nexpaq 0:6c56fb4bc5f0 1844 *
nexpaq 0:6c56fb4bc5f0 1845 * top means parent is a locally-trusted certificate
nexpaq 0:6c56fb4bc5f0 1846 * bottom means child is the end entity cert
nexpaq 0:6c56fb4bc5f0 1847 */
nexpaq 0:6c56fb4bc5f0 1848 static int x509_crt_check_parent( const mbedtls_x509_crt *child,
nexpaq 0:6c56fb4bc5f0 1849 const mbedtls_x509_crt *parent,
nexpaq 0:6c56fb4bc5f0 1850 int top, int bottom )
nexpaq 0:6c56fb4bc5f0 1851 {
nexpaq 0:6c56fb4bc5f0 1852 int need_ca_bit;
nexpaq 0:6c56fb4bc5f0 1853
nexpaq 0:6c56fb4bc5f0 1854 /* Parent must be the issuer */
nexpaq 0:6c56fb4bc5f0 1855 if( x509_name_cmp( &child->issuer, &parent->subject ) != 0 )
nexpaq 0:6c56fb4bc5f0 1856 return( -1 );
nexpaq 0:6c56fb4bc5f0 1857
nexpaq 0:6c56fb4bc5f0 1858 /* Parent must have the basicConstraints CA bit set as a general rule */
nexpaq 0:6c56fb4bc5f0 1859 need_ca_bit = 1;
nexpaq 0:6c56fb4bc5f0 1860
nexpaq 0:6c56fb4bc5f0 1861 /* Exception: v1/v2 certificates that are locally trusted. */
nexpaq 0:6c56fb4bc5f0 1862 if( top && parent->version < 3 )
nexpaq 0:6c56fb4bc5f0 1863 need_ca_bit = 0;
nexpaq 0:6c56fb4bc5f0 1864
nexpaq 0:6c56fb4bc5f0 1865 /* Exception: self-signed end-entity certs that are locally trusted. */
nexpaq 0:6c56fb4bc5f0 1866 if( top && bottom &&
nexpaq 0:6c56fb4bc5f0 1867 child->raw.len == parent->raw.len &&
nexpaq 0:6c56fb4bc5f0 1868 memcmp( child->raw.p, parent->raw.p, child->raw.len ) == 0 )
nexpaq 0:6c56fb4bc5f0 1869 {
nexpaq 0:6c56fb4bc5f0 1870 need_ca_bit = 0;
nexpaq 0:6c56fb4bc5f0 1871 }
nexpaq 0:6c56fb4bc5f0 1872
nexpaq 0:6c56fb4bc5f0 1873 if( need_ca_bit && ! parent->ca_istrue )
nexpaq 0:6c56fb4bc5f0 1874 return( -1 );
nexpaq 0:6c56fb4bc5f0 1875
nexpaq 0:6c56fb4bc5f0 1876 #if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
nexpaq 0:6c56fb4bc5f0 1877 if( need_ca_bit &&
nexpaq 0:6c56fb4bc5f0 1878 mbedtls_x509_crt_check_key_usage( parent, MBEDTLS_X509_KU_KEY_CERT_SIGN ) != 0 )
nexpaq 0:6c56fb4bc5f0 1879 {
nexpaq 0:6c56fb4bc5f0 1880 return( -1 );
nexpaq 0:6c56fb4bc5f0 1881 }
nexpaq 0:6c56fb4bc5f0 1882 #endif
nexpaq 0:6c56fb4bc5f0 1883
nexpaq 0:6c56fb4bc5f0 1884 return( 0 );
nexpaq 0:6c56fb4bc5f0 1885 }
nexpaq 0:6c56fb4bc5f0 1886
nexpaq 0:6c56fb4bc5f0 1887 static int x509_crt_verify_top(
nexpaq 0:6c56fb4bc5f0 1888 mbedtls_x509_crt *child, mbedtls_x509_crt *trust_ca,
nexpaq 0:6c56fb4bc5f0 1889 mbedtls_x509_crl *ca_crl,
nexpaq 0:6c56fb4bc5f0 1890 const mbedtls_x509_crt_profile *profile,
nexpaq 0:6c56fb4bc5f0 1891 int path_cnt, int self_cnt, uint32_t *flags,
nexpaq 0:6c56fb4bc5f0 1892 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
nexpaq 0:6c56fb4bc5f0 1893 void *p_vrfy )
nexpaq 0:6c56fb4bc5f0 1894 {
nexpaq 0:6c56fb4bc5f0 1895 int ret;
nexpaq 0:6c56fb4bc5f0 1896 uint32_t ca_flags = 0;
nexpaq 0:6c56fb4bc5f0 1897 int check_path_cnt;
nexpaq 0:6c56fb4bc5f0 1898 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
nexpaq 0:6c56fb4bc5f0 1899 const mbedtls_md_info_t *md_info;
nexpaq 0:6c56fb4bc5f0 1900
nexpaq 0:6c56fb4bc5f0 1901 if( mbedtls_x509_time_is_past( &child->valid_to ) )
nexpaq 0:6c56fb4bc5f0 1902 *flags |= MBEDTLS_X509_BADCERT_EXPIRED;
nexpaq 0:6c56fb4bc5f0 1903
nexpaq 0:6c56fb4bc5f0 1904 if( mbedtls_x509_time_is_future( &child->valid_from ) )
nexpaq 0:6c56fb4bc5f0 1905 *flags |= MBEDTLS_X509_BADCERT_FUTURE;
nexpaq 0:6c56fb4bc5f0 1906
nexpaq 0:6c56fb4bc5f0 1907 if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
nexpaq 0:6c56fb4bc5f0 1908 *flags |= MBEDTLS_X509_BADCERT_BAD_MD;
nexpaq 0:6c56fb4bc5f0 1909
nexpaq 0:6c56fb4bc5f0 1910 if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 1911 *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
nexpaq 0:6c56fb4bc5f0 1912
nexpaq 0:6c56fb4bc5f0 1913 /*
nexpaq 0:6c56fb4bc5f0 1914 * Child is the top of the chain. Check against the trust_ca list.
nexpaq 0:6c56fb4bc5f0 1915 */
nexpaq 0:6c56fb4bc5f0 1916 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 1917
nexpaq 0:6c56fb4bc5f0 1918 md_info = mbedtls_md_info_from_type( child->sig_md );
nexpaq 0:6c56fb4bc5f0 1919 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 1920 {
nexpaq 0:6c56fb4bc5f0 1921 /*
nexpaq 0:6c56fb4bc5f0 1922 * Cannot check 'unknown', no need to try any CA
nexpaq 0:6c56fb4bc5f0 1923 */
nexpaq 0:6c56fb4bc5f0 1924 trust_ca = NULL;
nexpaq 0:6c56fb4bc5f0 1925 }
nexpaq 0:6c56fb4bc5f0 1926 else
nexpaq 0:6c56fb4bc5f0 1927 mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
nexpaq 0:6c56fb4bc5f0 1928
nexpaq 0:6c56fb4bc5f0 1929 for( /* trust_ca */ ; trust_ca != NULL; trust_ca = trust_ca->next )
nexpaq 0:6c56fb4bc5f0 1930 {
nexpaq 0:6c56fb4bc5f0 1931 if( x509_crt_check_parent( child, trust_ca, 1, path_cnt == 0 ) != 0 )
nexpaq 0:6c56fb4bc5f0 1932 continue;
nexpaq 0:6c56fb4bc5f0 1933
nexpaq 0:6c56fb4bc5f0 1934 check_path_cnt = path_cnt + 1;
nexpaq 0:6c56fb4bc5f0 1935
nexpaq 0:6c56fb4bc5f0 1936 /*
nexpaq 0:6c56fb4bc5f0 1937 * Reduce check_path_cnt to check against if top of the chain is
nexpaq 0:6c56fb4bc5f0 1938 * the same as the trusted CA
nexpaq 0:6c56fb4bc5f0 1939 */
nexpaq 0:6c56fb4bc5f0 1940 if( child->subject_raw.len == trust_ca->subject_raw.len &&
nexpaq 0:6c56fb4bc5f0 1941 memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
nexpaq 0:6c56fb4bc5f0 1942 child->issuer_raw.len ) == 0 )
nexpaq 0:6c56fb4bc5f0 1943 {
nexpaq 0:6c56fb4bc5f0 1944 check_path_cnt--;
nexpaq 0:6c56fb4bc5f0 1945 }
nexpaq 0:6c56fb4bc5f0 1946
nexpaq 0:6c56fb4bc5f0 1947 /* Self signed certificates do not count towards the limit */
nexpaq 0:6c56fb4bc5f0 1948 if( trust_ca->max_pathlen > 0 &&
nexpaq 0:6c56fb4bc5f0 1949 trust_ca->max_pathlen < check_path_cnt - self_cnt )
nexpaq 0:6c56fb4bc5f0 1950 {
nexpaq 0:6c56fb4bc5f0 1951 continue;
nexpaq 0:6c56fb4bc5f0 1952 }
nexpaq 0:6c56fb4bc5f0 1953
nexpaq 0:6c56fb4bc5f0 1954 if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) )
nexpaq 0:6c56fb4bc5f0 1955 {
nexpaq 0:6c56fb4bc5f0 1956 continue;
nexpaq 0:6c56fb4bc5f0 1957 }
nexpaq 0:6c56fb4bc5f0 1958
nexpaq 0:6c56fb4bc5f0 1959 if( mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
nexpaq 0:6c56fb4bc5f0 1960 {
nexpaq 0:6c56fb4bc5f0 1961 continue;
nexpaq 0:6c56fb4bc5f0 1962 }
nexpaq 0:6c56fb4bc5f0 1963
nexpaq 0:6c56fb4bc5f0 1964 if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &trust_ca->pk,
nexpaq 0:6c56fb4bc5f0 1965 child->sig_md, hash, mbedtls_md_get_size( md_info ),
nexpaq 0:6c56fb4bc5f0 1966 child->sig.p, child->sig.len ) != 0 )
nexpaq 0:6c56fb4bc5f0 1967 {
nexpaq 0:6c56fb4bc5f0 1968 continue;
nexpaq 0:6c56fb4bc5f0 1969 }
nexpaq 0:6c56fb4bc5f0 1970
nexpaq 0:6c56fb4bc5f0 1971 /*
nexpaq 0:6c56fb4bc5f0 1972 * Top of chain is signed by a trusted CA
nexpaq 0:6c56fb4bc5f0 1973 */
nexpaq 0:6c56fb4bc5f0 1974 *flags &= ~MBEDTLS_X509_BADCERT_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 1975
nexpaq 0:6c56fb4bc5f0 1976 if( x509_profile_check_key( profile, child->sig_pk, &trust_ca->pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 1977 *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
nexpaq 0:6c56fb4bc5f0 1978
nexpaq 0:6c56fb4bc5f0 1979 break;
nexpaq 0:6c56fb4bc5f0 1980 }
nexpaq 0:6c56fb4bc5f0 1981
nexpaq 0:6c56fb4bc5f0 1982 /*
nexpaq 0:6c56fb4bc5f0 1983 * If top of chain is not the same as the trusted CA send a verify request
nexpaq 0:6c56fb4bc5f0 1984 * to the callback for any issues with validity and CRL presence for the
nexpaq 0:6c56fb4bc5f0 1985 * trusted CA certificate.
nexpaq 0:6c56fb4bc5f0 1986 */
nexpaq 0:6c56fb4bc5f0 1987 if( trust_ca != NULL &&
nexpaq 0:6c56fb4bc5f0 1988 ( child->subject_raw.len != trust_ca->subject_raw.len ||
nexpaq 0:6c56fb4bc5f0 1989 memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
nexpaq 0:6c56fb4bc5f0 1990 child->issuer_raw.len ) != 0 ) )
nexpaq 0:6c56fb4bc5f0 1991 {
nexpaq 0:6c56fb4bc5f0 1992 #if defined(MBEDTLS_X509_CRL_PARSE_C)
nexpaq 0:6c56fb4bc5f0 1993 /* Check trusted CA's CRL for the chain's top crt */
nexpaq 0:6c56fb4bc5f0 1994 *flags |= x509_crt_verifycrl( child, trust_ca, ca_crl, profile );
nexpaq 0:6c56fb4bc5f0 1995 #else
nexpaq 0:6c56fb4bc5f0 1996 ((void) ca_crl);
nexpaq 0:6c56fb4bc5f0 1997 #endif
nexpaq 0:6c56fb4bc5f0 1998
nexpaq 0:6c56fb4bc5f0 1999 if( NULL != f_vrfy )
nexpaq 0:6c56fb4bc5f0 2000 {
nexpaq 0:6c56fb4bc5f0 2001 if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1,
nexpaq 0:6c56fb4bc5f0 2002 &ca_flags ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 2003 {
nexpaq 0:6c56fb4bc5f0 2004 return( ret );
nexpaq 0:6c56fb4bc5f0 2005 }
nexpaq 0:6c56fb4bc5f0 2006 }
nexpaq 0:6c56fb4bc5f0 2007 }
nexpaq 0:6c56fb4bc5f0 2008
nexpaq 0:6c56fb4bc5f0 2009 /* Call callback on top cert */
nexpaq 0:6c56fb4bc5f0 2010 if( NULL != f_vrfy )
nexpaq 0:6c56fb4bc5f0 2011 {
nexpaq 0:6c56fb4bc5f0 2012 if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 2013 return( ret );
nexpaq 0:6c56fb4bc5f0 2014 }
nexpaq 0:6c56fb4bc5f0 2015
nexpaq 0:6c56fb4bc5f0 2016 *flags |= ca_flags;
nexpaq 0:6c56fb4bc5f0 2017
nexpaq 0:6c56fb4bc5f0 2018 return( 0 );
nexpaq 0:6c56fb4bc5f0 2019 }
nexpaq 0:6c56fb4bc5f0 2020
nexpaq 0:6c56fb4bc5f0 2021 static int x509_crt_verify_child(
nexpaq 0:6c56fb4bc5f0 2022 mbedtls_x509_crt *child, mbedtls_x509_crt *parent,
nexpaq 0:6c56fb4bc5f0 2023 mbedtls_x509_crt *trust_ca, mbedtls_x509_crl *ca_crl,
nexpaq 0:6c56fb4bc5f0 2024 const mbedtls_x509_crt_profile *profile,
nexpaq 0:6c56fb4bc5f0 2025 int path_cnt, int self_cnt, uint32_t *flags,
nexpaq 0:6c56fb4bc5f0 2026 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
nexpaq 0:6c56fb4bc5f0 2027 void *p_vrfy )
nexpaq 0:6c56fb4bc5f0 2028 {
nexpaq 0:6c56fb4bc5f0 2029 int ret;
nexpaq 0:6c56fb4bc5f0 2030 uint32_t parent_flags = 0;
nexpaq 0:6c56fb4bc5f0 2031 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
nexpaq 0:6c56fb4bc5f0 2032 mbedtls_x509_crt *grandparent;
nexpaq 0:6c56fb4bc5f0 2033 const mbedtls_md_info_t *md_info;
nexpaq 0:6c56fb4bc5f0 2034
nexpaq 0:6c56fb4bc5f0 2035 /* Counting intermediate self signed certificates */
nexpaq 0:6c56fb4bc5f0 2036 if( ( path_cnt != 0 ) && x509_name_cmp( &child->issuer, &child->subject ) == 0 )
nexpaq 0:6c56fb4bc5f0 2037 self_cnt++;
nexpaq 0:6c56fb4bc5f0 2038
nexpaq 0:6c56fb4bc5f0 2039 /* path_cnt is 0 for the first intermediate CA */
nexpaq 0:6c56fb4bc5f0 2040 if( 1 + path_cnt > MBEDTLS_X509_MAX_INTERMEDIATE_CA )
nexpaq 0:6c56fb4bc5f0 2041 {
nexpaq 0:6c56fb4bc5f0 2042 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 2043 return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
nexpaq 0:6c56fb4bc5f0 2044 }
nexpaq 0:6c56fb4bc5f0 2045
nexpaq 0:6c56fb4bc5f0 2046 if( mbedtls_x509_time_is_past( &child->valid_to ) )
nexpaq 0:6c56fb4bc5f0 2047 *flags |= MBEDTLS_X509_BADCERT_EXPIRED;
nexpaq 0:6c56fb4bc5f0 2048
nexpaq 0:6c56fb4bc5f0 2049 if( mbedtls_x509_time_is_future( &child->valid_from ) )
nexpaq 0:6c56fb4bc5f0 2050 *flags |= MBEDTLS_X509_BADCERT_FUTURE;
nexpaq 0:6c56fb4bc5f0 2051
nexpaq 0:6c56fb4bc5f0 2052 if( x509_profile_check_md_alg( profile, child->sig_md ) != 0 )
nexpaq 0:6c56fb4bc5f0 2053 *flags |= MBEDTLS_X509_BADCERT_BAD_MD;
nexpaq 0:6c56fb4bc5f0 2054
nexpaq 0:6c56fb4bc5f0 2055 if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 2056 *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
nexpaq 0:6c56fb4bc5f0 2057
nexpaq 0:6c56fb4bc5f0 2058 md_info = mbedtls_md_info_from_type( child->sig_md );
nexpaq 0:6c56fb4bc5f0 2059 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 2060 {
nexpaq 0:6c56fb4bc5f0 2061 /*
nexpaq 0:6c56fb4bc5f0 2062 * Cannot check 'unknown' hash
nexpaq 0:6c56fb4bc5f0 2063 */
nexpaq 0:6c56fb4bc5f0 2064 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 2065 }
nexpaq 0:6c56fb4bc5f0 2066 else
nexpaq 0:6c56fb4bc5f0 2067 {
nexpaq 0:6c56fb4bc5f0 2068 mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash );
nexpaq 0:6c56fb4bc5f0 2069
nexpaq 0:6c56fb4bc5f0 2070 if( x509_profile_check_key( profile, child->sig_pk, &parent->pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 2071 *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
nexpaq 0:6c56fb4bc5f0 2072
nexpaq 0:6c56fb4bc5f0 2073 if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk,
nexpaq 0:6c56fb4bc5f0 2074 child->sig_md, hash, mbedtls_md_get_size( md_info ),
nexpaq 0:6c56fb4bc5f0 2075 child->sig.p, child->sig.len ) != 0 )
nexpaq 0:6c56fb4bc5f0 2076 {
nexpaq 0:6c56fb4bc5f0 2077 *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED;
nexpaq 0:6c56fb4bc5f0 2078 }
nexpaq 0:6c56fb4bc5f0 2079 }
nexpaq 0:6c56fb4bc5f0 2080
nexpaq 0:6c56fb4bc5f0 2081 #if defined(MBEDTLS_X509_CRL_PARSE_C)
nexpaq 0:6c56fb4bc5f0 2082 /* Check trusted CA's CRL for the given crt */
nexpaq 0:6c56fb4bc5f0 2083 *flags |= x509_crt_verifycrl(child, parent, ca_crl, profile );
nexpaq 0:6c56fb4bc5f0 2084 #endif
nexpaq 0:6c56fb4bc5f0 2085
nexpaq 0:6c56fb4bc5f0 2086 /* Look for a grandparent in trusted CAs */
nexpaq 0:6c56fb4bc5f0 2087 for( grandparent = trust_ca;
nexpaq 0:6c56fb4bc5f0 2088 grandparent != NULL;
nexpaq 0:6c56fb4bc5f0 2089 grandparent = grandparent->next )
nexpaq 0:6c56fb4bc5f0 2090 {
nexpaq 0:6c56fb4bc5f0 2091 if( x509_crt_check_parent( parent, grandparent,
nexpaq 0:6c56fb4bc5f0 2092 0, path_cnt == 0 ) == 0 )
nexpaq 0:6c56fb4bc5f0 2093 break;
nexpaq 0:6c56fb4bc5f0 2094 }
nexpaq 0:6c56fb4bc5f0 2095
nexpaq 0:6c56fb4bc5f0 2096 if( grandparent != NULL )
nexpaq 0:6c56fb4bc5f0 2097 {
nexpaq 0:6c56fb4bc5f0 2098 ret = x509_crt_verify_top( parent, grandparent, ca_crl, profile,
nexpaq 0:6c56fb4bc5f0 2099 path_cnt + 1, self_cnt, &parent_flags, f_vrfy, p_vrfy );
nexpaq 0:6c56fb4bc5f0 2100 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 2101 return( ret );
nexpaq 0:6c56fb4bc5f0 2102 }
nexpaq 0:6c56fb4bc5f0 2103 else
nexpaq 0:6c56fb4bc5f0 2104 {
nexpaq 0:6c56fb4bc5f0 2105 /* Look for a grandparent upwards the chain */
nexpaq 0:6c56fb4bc5f0 2106 for( grandparent = parent->next;
nexpaq 0:6c56fb4bc5f0 2107 grandparent != NULL;
nexpaq 0:6c56fb4bc5f0 2108 grandparent = grandparent->next )
nexpaq 0:6c56fb4bc5f0 2109 {
nexpaq 0:6c56fb4bc5f0 2110 /* +2 because the current step is not yet accounted for
nexpaq 0:6c56fb4bc5f0 2111 * and because max_pathlen is one higher than it should be.
nexpaq 0:6c56fb4bc5f0 2112 * Also self signed certificates do not count to the limit. */
nexpaq 0:6c56fb4bc5f0 2113 if( grandparent->max_pathlen > 0 &&
nexpaq 0:6c56fb4bc5f0 2114 grandparent->max_pathlen < 2 + path_cnt - self_cnt )
nexpaq 0:6c56fb4bc5f0 2115 {
nexpaq 0:6c56fb4bc5f0 2116 continue;
nexpaq 0:6c56fb4bc5f0 2117 }
nexpaq 0:6c56fb4bc5f0 2118
nexpaq 0:6c56fb4bc5f0 2119 if( x509_crt_check_parent( parent, grandparent,
nexpaq 0:6c56fb4bc5f0 2120 0, path_cnt == 0 ) == 0 )
nexpaq 0:6c56fb4bc5f0 2121 break;
nexpaq 0:6c56fb4bc5f0 2122 }
nexpaq 0:6c56fb4bc5f0 2123
nexpaq 0:6c56fb4bc5f0 2124 /* Is our parent part of the chain or at the top? */
nexpaq 0:6c56fb4bc5f0 2125 if( grandparent != NULL )
nexpaq 0:6c56fb4bc5f0 2126 {
nexpaq 0:6c56fb4bc5f0 2127 ret = x509_crt_verify_child( parent, grandparent, trust_ca, ca_crl,
nexpaq 0:6c56fb4bc5f0 2128 profile, path_cnt + 1, self_cnt, &parent_flags,
nexpaq 0:6c56fb4bc5f0 2129 f_vrfy, p_vrfy );
nexpaq 0:6c56fb4bc5f0 2130 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 2131 return( ret );
nexpaq 0:6c56fb4bc5f0 2132 }
nexpaq 0:6c56fb4bc5f0 2133 else
nexpaq 0:6c56fb4bc5f0 2134 {
nexpaq 0:6c56fb4bc5f0 2135 ret = x509_crt_verify_top( parent, trust_ca, ca_crl, profile,
nexpaq 0:6c56fb4bc5f0 2136 path_cnt + 1, self_cnt, &parent_flags,
nexpaq 0:6c56fb4bc5f0 2137 f_vrfy, p_vrfy );
nexpaq 0:6c56fb4bc5f0 2138 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 2139 return( ret );
nexpaq 0:6c56fb4bc5f0 2140 }
nexpaq 0:6c56fb4bc5f0 2141 }
nexpaq 0:6c56fb4bc5f0 2142
nexpaq 0:6c56fb4bc5f0 2143 /* child is verified to be a child of the parent, call verify callback */
nexpaq 0:6c56fb4bc5f0 2144 if( NULL != f_vrfy )
nexpaq 0:6c56fb4bc5f0 2145 if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 2146 return( ret );
nexpaq 0:6c56fb4bc5f0 2147
nexpaq 0:6c56fb4bc5f0 2148 *flags |= parent_flags;
nexpaq 0:6c56fb4bc5f0 2149
nexpaq 0:6c56fb4bc5f0 2150 return( 0 );
nexpaq 0:6c56fb4bc5f0 2151 }
nexpaq 0:6c56fb4bc5f0 2152
nexpaq 0:6c56fb4bc5f0 2153 /*
nexpaq 0:6c56fb4bc5f0 2154 * Verify the certificate validity
nexpaq 0:6c56fb4bc5f0 2155 */
nexpaq 0:6c56fb4bc5f0 2156 int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
nexpaq 0:6c56fb4bc5f0 2157 mbedtls_x509_crt *trust_ca,
nexpaq 0:6c56fb4bc5f0 2158 mbedtls_x509_crl *ca_crl,
nexpaq 0:6c56fb4bc5f0 2159 const char *cn, uint32_t *flags,
nexpaq 0:6c56fb4bc5f0 2160 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
nexpaq 0:6c56fb4bc5f0 2161 void *p_vrfy )
nexpaq 0:6c56fb4bc5f0 2162 {
nexpaq 0:6c56fb4bc5f0 2163 return( mbedtls_x509_crt_verify_with_profile( crt, trust_ca, ca_crl,
nexpaq 0:6c56fb4bc5f0 2164 &mbedtls_x509_crt_profile_default, cn, flags, f_vrfy, p_vrfy ) );
nexpaq 0:6c56fb4bc5f0 2165 }
nexpaq 0:6c56fb4bc5f0 2166
nexpaq 0:6c56fb4bc5f0 2167
nexpaq 0:6c56fb4bc5f0 2168 /*
nexpaq 0:6c56fb4bc5f0 2169 * Verify the certificate validity, with profile
nexpaq 0:6c56fb4bc5f0 2170 */
nexpaq 0:6c56fb4bc5f0 2171 int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt,
nexpaq 0:6c56fb4bc5f0 2172 mbedtls_x509_crt *trust_ca,
nexpaq 0:6c56fb4bc5f0 2173 mbedtls_x509_crl *ca_crl,
nexpaq 0:6c56fb4bc5f0 2174 const mbedtls_x509_crt_profile *profile,
nexpaq 0:6c56fb4bc5f0 2175 const char *cn, uint32_t *flags,
nexpaq 0:6c56fb4bc5f0 2176 int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *),
nexpaq 0:6c56fb4bc5f0 2177 void *p_vrfy )
nexpaq 0:6c56fb4bc5f0 2178 {
nexpaq 0:6c56fb4bc5f0 2179 size_t cn_len;
nexpaq 0:6c56fb4bc5f0 2180 int ret;
nexpaq 0:6c56fb4bc5f0 2181 int pathlen = 0, selfsigned = 0;
nexpaq 0:6c56fb4bc5f0 2182 mbedtls_x509_crt *parent;
nexpaq 0:6c56fb4bc5f0 2183 mbedtls_x509_name *name;
nexpaq 0:6c56fb4bc5f0 2184 mbedtls_x509_sequence *cur = NULL;
nexpaq 0:6c56fb4bc5f0 2185 mbedtls_pk_type_t pk_type;
nexpaq 0:6c56fb4bc5f0 2186
nexpaq 0:6c56fb4bc5f0 2187 if( profile == NULL )
nexpaq 0:6c56fb4bc5f0 2188 return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 2189
nexpaq 0:6c56fb4bc5f0 2190 *flags = 0;
nexpaq 0:6c56fb4bc5f0 2191
nexpaq 0:6c56fb4bc5f0 2192 if( cn != NULL )
nexpaq 0:6c56fb4bc5f0 2193 {
nexpaq 0:6c56fb4bc5f0 2194 name = &crt->subject;
nexpaq 0:6c56fb4bc5f0 2195 cn_len = strlen( cn );
nexpaq 0:6c56fb4bc5f0 2196
nexpaq 0:6c56fb4bc5f0 2197 if( crt->ext_types & MBEDTLS_X509_EXT_SUBJECT_ALT_NAME )
nexpaq 0:6c56fb4bc5f0 2198 {
nexpaq 0:6c56fb4bc5f0 2199 cur = &crt->subject_alt_names;
nexpaq 0:6c56fb4bc5f0 2200
nexpaq 0:6c56fb4bc5f0 2201 while( cur != NULL )
nexpaq 0:6c56fb4bc5f0 2202 {
nexpaq 0:6c56fb4bc5f0 2203 if( cur->buf.len == cn_len &&
nexpaq 0:6c56fb4bc5f0 2204 x509_memcasecmp( cn, cur->buf.p, cn_len ) == 0 )
nexpaq 0:6c56fb4bc5f0 2205 break;
nexpaq 0:6c56fb4bc5f0 2206
nexpaq 0:6c56fb4bc5f0 2207 if( cur->buf.len > 2 &&
nexpaq 0:6c56fb4bc5f0 2208 memcmp( cur->buf.p, "*.", 2 ) == 0 &&
nexpaq 0:6c56fb4bc5f0 2209 x509_check_wildcard( cn, &cur->buf ) == 0 )
nexpaq 0:6c56fb4bc5f0 2210 {
nexpaq 0:6c56fb4bc5f0 2211 break;
nexpaq 0:6c56fb4bc5f0 2212 }
nexpaq 0:6c56fb4bc5f0 2213
nexpaq 0:6c56fb4bc5f0 2214 cur = cur->next;
nexpaq 0:6c56fb4bc5f0 2215 }
nexpaq 0:6c56fb4bc5f0 2216
nexpaq 0:6c56fb4bc5f0 2217 if( cur == NULL )
nexpaq 0:6c56fb4bc5f0 2218 *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
nexpaq 0:6c56fb4bc5f0 2219 }
nexpaq 0:6c56fb4bc5f0 2220 else
nexpaq 0:6c56fb4bc5f0 2221 {
nexpaq 0:6c56fb4bc5f0 2222 while( name != NULL )
nexpaq 0:6c56fb4bc5f0 2223 {
nexpaq 0:6c56fb4bc5f0 2224 if( MBEDTLS_OID_CMP( MBEDTLS_OID_AT_CN, &name->oid ) == 0 )
nexpaq 0:6c56fb4bc5f0 2225 {
nexpaq 0:6c56fb4bc5f0 2226 if( name->val.len == cn_len &&
nexpaq 0:6c56fb4bc5f0 2227 x509_memcasecmp( name->val.p, cn, cn_len ) == 0 )
nexpaq 0:6c56fb4bc5f0 2228 break;
nexpaq 0:6c56fb4bc5f0 2229
nexpaq 0:6c56fb4bc5f0 2230 if( name->val.len > 2 &&
nexpaq 0:6c56fb4bc5f0 2231 memcmp( name->val.p, "*.", 2 ) == 0 &&
nexpaq 0:6c56fb4bc5f0 2232 x509_check_wildcard( cn, &name->val ) == 0 )
nexpaq 0:6c56fb4bc5f0 2233 break;
nexpaq 0:6c56fb4bc5f0 2234 }
nexpaq 0:6c56fb4bc5f0 2235
nexpaq 0:6c56fb4bc5f0 2236 name = name->next;
nexpaq 0:6c56fb4bc5f0 2237 }
nexpaq 0:6c56fb4bc5f0 2238
nexpaq 0:6c56fb4bc5f0 2239 if( name == NULL )
nexpaq 0:6c56fb4bc5f0 2240 *flags |= MBEDTLS_X509_BADCERT_CN_MISMATCH;
nexpaq 0:6c56fb4bc5f0 2241 }
nexpaq 0:6c56fb4bc5f0 2242 }
nexpaq 0:6c56fb4bc5f0 2243
nexpaq 0:6c56fb4bc5f0 2244 /* Check the type and size of the key */
nexpaq 0:6c56fb4bc5f0 2245 pk_type = mbedtls_pk_get_type( &crt->pk );
nexpaq 0:6c56fb4bc5f0 2246
nexpaq 0:6c56fb4bc5f0 2247 if( x509_profile_check_pk_alg( profile, pk_type ) != 0 )
nexpaq 0:6c56fb4bc5f0 2248 *flags |= MBEDTLS_X509_BADCERT_BAD_PK;
nexpaq 0:6c56fb4bc5f0 2249
nexpaq 0:6c56fb4bc5f0 2250 if( x509_profile_check_key( profile, pk_type, &crt->pk ) != 0 )
nexpaq 0:6c56fb4bc5f0 2251 *flags |= MBEDTLS_X509_BADCERT_BAD_KEY;
nexpaq 0:6c56fb4bc5f0 2252
nexpaq 0:6c56fb4bc5f0 2253 /* Look for a parent in trusted CAs */
nexpaq 0:6c56fb4bc5f0 2254 for( parent = trust_ca; parent != NULL; parent = parent->next )
nexpaq 0:6c56fb4bc5f0 2255 {
nexpaq 0:6c56fb4bc5f0 2256 if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
nexpaq 0:6c56fb4bc5f0 2257 break;
nexpaq 0:6c56fb4bc5f0 2258 }
nexpaq 0:6c56fb4bc5f0 2259
nexpaq 0:6c56fb4bc5f0 2260 if( parent != NULL )
nexpaq 0:6c56fb4bc5f0 2261 {
nexpaq 0:6c56fb4bc5f0 2262 ret = x509_crt_verify_top( crt, parent, ca_crl, profile,
nexpaq 0:6c56fb4bc5f0 2263 pathlen, selfsigned, flags, f_vrfy, p_vrfy );
nexpaq 0:6c56fb4bc5f0 2264 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 2265 return( ret );
nexpaq 0:6c56fb4bc5f0 2266 }
nexpaq 0:6c56fb4bc5f0 2267 else
nexpaq 0:6c56fb4bc5f0 2268 {
nexpaq 0:6c56fb4bc5f0 2269 /* Look for a parent upwards the chain */
nexpaq 0:6c56fb4bc5f0 2270 for( parent = crt->next; parent != NULL; parent = parent->next )
nexpaq 0:6c56fb4bc5f0 2271 if( x509_crt_check_parent( crt, parent, 0, pathlen == 0 ) == 0 )
nexpaq 0:6c56fb4bc5f0 2272 break;
nexpaq 0:6c56fb4bc5f0 2273
nexpaq 0:6c56fb4bc5f0 2274 /* Are we part of the chain or at the top? */
nexpaq 0:6c56fb4bc5f0 2275 if( parent != NULL )
nexpaq 0:6c56fb4bc5f0 2276 {
nexpaq 0:6c56fb4bc5f0 2277 ret = x509_crt_verify_child( crt, parent, trust_ca, ca_crl, profile,
nexpaq 0:6c56fb4bc5f0 2278 pathlen, selfsigned, flags, f_vrfy, p_vrfy );
nexpaq 0:6c56fb4bc5f0 2279 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 2280 return( ret );
nexpaq 0:6c56fb4bc5f0 2281 }
nexpaq 0:6c56fb4bc5f0 2282 else
nexpaq 0:6c56fb4bc5f0 2283 {
nexpaq 0:6c56fb4bc5f0 2284 ret = x509_crt_verify_top( crt, trust_ca, ca_crl, profile,
nexpaq 0:6c56fb4bc5f0 2285 pathlen, selfsigned, flags, f_vrfy, p_vrfy );
nexpaq 0:6c56fb4bc5f0 2286 if( ret != 0 )
nexpaq 0:6c56fb4bc5f0 2287 return( ret );
nexpaq 0:6c56fb4bc5f0 2288 }
nexpaq 0:6c56fb4bc5f0 2289 }
nexpaq 0:6c56fb4bc5f0 2290
nexpaq 0:6c56fb4bc5f0 2291 if( *flags != 0 )
nexpaq 0:6c56fb4bc5f0 2292 return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
nexpaq 0:6c56fb4bc5f0 2293
nexpaq 0:6c56fb4bc5f0 2294 return( 0 );
nexpaq 0:6c56fb4bc5f0 2295 }
nexpaq 0:6c56fb4bc5f0 2296
nexpaq 0:6c56fb4bc5f0 2297 /*
nexpaq 0:6c56fb4bc5f0 2298 * Initialize a certificate chain
nexpaq 0:6c56fb4bc5f0 2299 */
nexpaq 0:6c56fb4bc5f0 2300 void mbedtls_x509_crt_init( mbedtls_x509_crt *crt )
nexpaq 0:6c56fb4bc5f0 2301 {
nexpaq 0:6c56fb4bc5f0 2302 memset( crt, 0, sizeof(mbedtls_x509_crt) );
nexpaq 0:6c56fb4bc5f0 2303 }
nexpaq 0:6c56fb4bc5f0 2304
nexpaq 0:6c56fb4bc5f0 2305 /*
nexpaq 0:6c56fb4bc5f0 2306 * Unallocate all certificate data
nexpaq 0:6c56fb4bc5f0 2307 */
nexpaq 0:6c56fb4bc5f0 2308 void mbedtls_x509_crt_free( mbedtls_x509_crt *crt )
nexpaq 0:6c56fb4bc5f0 2309 {
nexpaq 0:6c56fb4bc5f0 2310 mbedtls_x509_crt *cert_cur = crt;
nexpaq 0:6c56fb4bc5f0 2311 mbedtls_x509_crt *cert_prv;
nexpaq 0:6c56fb4bc5f0 2312 mbedtls_x509_name *name_cur;
nexpaq 0:6c56fb4bc5f0 2313 mbedtls_x509_name *name_prv;
nexpaq 0:6c56fb4bc5f0 2314 mbedtls_x509_sequence *seq_cur;
nexpaq 0:6c56fb4bc5f0 2315 mbedtls_x509_sequence *seq_prv;
nexpaq 0:6c56fb4bc5f0 2316
nexpaq 0:6c56fb4bc5f0 2317 if( crt == NULL )
nexpaq 0:6c56fb4bc5f0 2318 return;
nexpaq 0:6c56fb4bc5f0 2319
nexpaq 0:6c56fb4bc5f0 2320 do
nexpaq 0:6c56fb4bc5f0 2321 {
nexpaq 0:6c56fb4bc5f0 2322 mbedtls_pk_free( &cert_cur->pk );
nexpaq 0:6c56fb4bc5f0 2323
nexpaq 0:6c56fb4bc5f0 2324 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
nexpaq 0:6c56fb4bc5f0 2325 mbedtls_free( cert_cur->sig_opts );
nexpaq 0:6c56fb4bc5f0 2326 #endif
nexpaq 0:6c56fb4bc5f0 2327
nexpaq 0:6c56fb4bc5f0 2328 name_cur = cert_cur->issuer.next;
nexpaq 0:6c56fb4bc5f0 2329 while( name_cur != NULL )
nexpaq 0:6c56fb4bc5f0 2330 {
nexpaq 0:6c56fb4bc5f0 2331 name_prv = name_cur;
nexpaq 0:6c56fb4bc5f0 2332 name_cur = name_cur->next;
nexpaq 0:6c56fb4bc5f0 2333 mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
nexpaq 0:6c56fb4bc5f0 2334 mbedtls_free( name_prv );
nexpaq 0:6c56fb4bc5f0 2335 }
nexpaq 0:6c56fb4bc5f0 2336
nexpaq 0:6c56fb4bc5f0 2337 name_cur = cert_cur->subject.next;
nexpaq 0:6c56fb4bc5f0 2338 while( name_cur != NULL )
nexpaq 0:6c56fb4bc5f0 2339 {
nexpaq 0:6c56fb4bc5f0 2340 name_prv = name_cur;
nexpaq 0:6c56fb4bc5f0 2341 name_cur = name_cur->next;
nexpaq 0:6c56fb4bc5f0 2342 mbedtls_zeroize( name_prv, sizeof( mbedtls_x509_name ) );
nexpaq 0:6c56fb4bc5f0 2343 mbedtls_free( name_prv );
nexpaq 0:6c56fb4bc5f0 2344 }
nexpaq 0:6c56fb4bc5f0 2345
nexpaq 0:6c56fb4bc5f0 2346 seq_cur = cert_cur->ext_key_usage.next;
nexpaq 0:6c56fb4bc5f0 2347 while( seq_cur != NULL )
nexpaq 0:6c56fb4bc5f0 2348 {
nexpaq 0:6c56fb4bc5f0 2349 seq_prv = seq_cur;
nexpaq 0:6c56fb4bc5f0 2350 seq_cur = seq_cur->next;
nexpaq 0:6c56fb4bc5f0 2351 mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
nexpaq 0:6c56fb4bc5f0 2352 mbedtls_free( seq_prv );
nexpaq 0:6c56fb4bc5f0 2353 }
nexpaq 0:6c56fb4bc5f0 2354
nexpaq 0:6c56fb4bc5f0 2355 seq_cur = cert_cur->subject_alt_names.next;
nexpaq 0:6c56fb4bc5f0 2356 while( seq_cur != NULL )
nexpaq 0:6c56fb4bc5f0 2357 {
nexpaq 0:6c56fb4bc5f0 2358 seq_prv = seq_cur;
nexpaq 0:6c56fb4bc5f0 2359 seq_cur = seq_cur->next;
nexpaq 0:6c56fb4bc5f0 2360 mbedtls_zeroize( seq_prv, sizeof( mbedtls_x509_sequence ) );
nexpaq 0:6c56fb4bc5f0 2361 mbedtls_free( seq_prv );
nexpaq 0:6c56fb4bc5f0 2362 }
nexpaq 0:6c56fb4bc5f0 2363
nexpaq 0:6c56fb4bc5f0 2364 if( cert_cur->raw.p != NULL )
nexpaq 0:6c56fb4bc5f0 2365 {
nexpaq 0:6c56fb4bc5f0 2366 mbedtls_zeroize( cert_cur->raw.p, cert_cur->raw.len );
nexpaq 0:6c56fb4bc5f0 2367 mbedtls_free( cert_cur->raw.p );
nexpaq 0:6c56fb4bc5f0 2368 }
nexpaq 0:6c56fb4bc5f0 2369
nexpaq 0:6c56fb4bc5f0 2370 cert_cur = cert_cur->next;
nexpaq 0:6c56fb4bc5f0 2371 }
nexpaq 0:6c56fb4bc5f0 2372 while( cert_cur != NULL );
nexpaq 0:6c56fb4bc5f0 2373
nexpaq 0:6c56fb4bc5f0 2374 cert_cur = crt;
nexpaq 0:6c56fb4bc5f0 2375 do
nexpaq 0:6c56fb4bc5f0 2376 {
nexpaq 0:6c56fb4bc5f0 2377 cert_prv = cert_cur;
nexpaq 0:6c56fb4bc5f0 2378 cert_cur = cert_cur->next;
nexpaq 0:6c56fb4bc5f0 2379
nexpaq 0:6c56fb4bc5f0 2380 mbedtls_zeroize( cert_prv, sizeof( mbedtls_x509_crt ) );
nexpaq 0:6c56fb4bc5f0 2381 if( cert_prv != crt )
nexpaq 0:6c56fb4bc5f0 2382 mbedtls_free( cert_prv );
nexpaq 0:6c56fb4bc5f0 2383 }
nexpaq 0:6c56fb4bc5f0 2384 while( cert_cur != NULL );
nexpaq 0:6c56fb4bc5f0 2385 }
nexpaq 0:6c56fb4bc5f0 2386
nexpaq 0:6c56fb4bc5f0 2387 #endif /* MBEDTLS_X509_CRT_PARSE_C */