lib/libcrypto/asn1/x_x509a.c

   1 /* $OpenBSD: x_x509a.c,v 1.15 2018/05/01 19:01:27 tb Exp $ */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project 1999.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <stdio.h>
  60
  61 #include <openssl/asn1t.h>
  62 #include <openssl/evp.h>
  63 #include <openssl/x509.h>
  64
  65 /* X509_CERT_AUX routines. These are used to encode additional
  66  * user modifiable data about a certificate. This data is
  67  * appended to the X509 encoding when the *_X509_AUX routines
  68  * are used. This means that the "traditional" X509 routines
  69  * will simply ignore the extra data.
  70  */
  71
  72 static X509_CERT_AUX *aux_get(X509 *x);
  73
  74 static const ASN1_TEMPLATE X509_CERT_AUX_seq_tt[] = {
  75         {
  76                 .flags = ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_OPTIONAL,
  77                 .offset = offsetof(X509_CERT_AUX, trust),
  78                 .field_name = "trust",
  79                 .item = &ASN1_OBJECT_it,
  80         },
  81         {
  82                 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SEQUENCE_OF |
  83                     ASN1_TFLG_OPTIONAL,
  84                 .tag = 0,
  85                 .offset = offsetof(X509_CERT_AUX, reject),
  86                 .field_name = "reject",
  87                 .item = &ASN1_OBJECT_it,
  88         },
  89         {
  90                 .flags = ASN1_TFLG_OPTIONAL,
  91                 .offset = offsetof(X509_CERT_AUX, alias),
  92                 .field_name = "alias",
  93                 .item = &ASN1_UTF8STRING_it,
  94         },
  95         {
  96                 .flags = ASN1_TFLG_OPTIONAL,
  97                 .offset = offsetof(X509_CERT_AUX, keyid),
  98                 .field_name = "keyid",
  99                 .item = &ASN1_OCTET_STRING_it,
 100         },
 101         {
 102                 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SEQUENCE_OF |
 103                     ASN1_TFLG_OPTIONAL,
 104                 .tag = 1,
 105                 .offset = offsetof(X509_CERT_AUX, other),
 106                 .field_name = "other",
 107                 .item = &X509_ALGOR_it,
 108         },
 109 };
 110
 111 const ASN1_ITEM X509_CERT_AUX_it = {
 112         .itype = ASN1_ITYPE_SEQUENCE,
 113         .utype = V_ASN1_SEQUENCE,
 114         .templates = X509_CERT_AUX_seq_tt,
 115         .tcount = sizeof(X509_CERT_AUX_seq_tt) / sizeof(ASN1_TEMPLATE),
 116         .size = sizeof(X509_CERT_AUX),
 117         .sname = "X509_CERT_AUX",
 118 };
 119
 120
 121 X509_CERT_AUX *
 122 d2i_X509_CERT_AUX(X509_CERT_AUX **a, const unsigned char **in, long len)
 123 {
 124         return (X509_CERT_AUX *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
 125             &X509_CERT_AUX_it);
 126 }
 127
 128 int
 129 i2d_X509_CERT_AUX(X509_CERT_AUX *a, unsigned char **out)
 130 {
 131         return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CERT_AUX_it);
 132 }
 133
 134 X509_CERT_AUX *
 135 X509_CERT_AUX_new(void)
 136 {
 137         return (X509_CERT_AUX *)ASN1_item_new(&X509_CERT_AUX_it);
 138 }
 139
 140 void
 141 X509_CERT_AUX_free(X509_CERT_AUX *a)
 142 {
 143         ASN1_item_free((ASN1_VALUE *)a, &X509_CERT_AUX_it);
 144 }
 145
 146 static X509_CERT_AUX *
 147 aux_get(X509 *x)
 148 {
 149         if (!x)
 150                 return NULL;
 151         if (!x->aux && !(x->aux = X509_CERT_AUX_new()))
 152                 return NULL;
 153         return x->aux;
 154 }
 155
 156 int
 157 X509_alias_set1(X509 *x, const unsigned char *name, int len)
 158 {
 159         X509_CERT_AUX *aux;
 160         if (!name) {
 161                 if (!x || !x->aux || !x->aux->alias)
 162                         return 1;
 163                 ASN1_UTF8STRING_free(x->aux->alias);
 164                 x->aux->alias = NULL;
 165                 return 1;
 166         }
 167         if (!(aux = aux_get(x)))
 168                 return 0;
 169         if (!aux->alias && !(aux->alias = ASN1_UTF8STRING_new()))
 170                 return 0;
 171         return ASN1_STRING_set(aux->alias, name, len);
 172 }
 173
 174 int
 175 X509_keyid_set1(X509 *x, const unsigned char *id, int len)
 176 {
 177         X509_CERT_AUX *aux;
 178         if (!id) {
 179                 if (!x || !x->aux || !x->aux->keyid)
 180                         return 1;
 181                 ASN1_OCTET_STRING_free(x->aux->keyid);
 182                 x->aux->keyid = NULL;
 183                 return 1;
 184         }
 185         if (!(aux = aux_get(x)))
 186                 return 0;
 187         if (!aux->keyid && !(aux->keyid = ASN1_OCTET_STRING_new()))
 188                 return 0;
 189         return ASN1_STRING_set(aux->keyid, id, len);
 190 }
 191
 192 unsigned char *
 193 X509_alias_get0(X509 *x, int *len)
 194 {
 195         if (!x->aux || !x->aux->alias)
 196                 return NULL;
 197         if (len)
 198                 *len = x->aux->alias->length;
 199         return x->aux->alias->data;
 200 }
 201
 202 unsigned char *
 203 X509_keyid_get0(X509 *x, int *len)
 204 {
 205         if (!x->aux || !x->aux->keyid)
 206                 return NULL;
 207         if (len)
 208                 *len = x->aux->keyid->length;
 209         return x->aux->keyid->data;
 210 }
 211
 212 int
 213 X509_add1_trust_object(X509 *x, const ASN1_OBJECT *obj)
 214 {
 215         X509_CERT_AUX *aux;
 216         ASN1_OBJECT *objtmp;
 217         int rc;
 218
 219         if (!(objtmp = OBJ_dup(obj)))
 220                 return 0;
 221         if (!(aux = aux_get(x)))
 222                 goto err;
 223         if (!aux->trust && !(aux->trust = sk_ASN1_OBJECT_new_null()))
 224                 goto err;
 225         rc = sk_ASN1_OBJECT_push(aux->trust, objtmp);
 226         if (rc != 0)
 227                 return rc;
 228
 229 err:
 230         ASN1_OBJECT_free(objtmp);
 231         return 0;
 232 }
 233
 234 int
 235 X509_add1_reject_object(X509 *x, const ASN1_OBJECT *obj)
 236 {
 237         X509_CERT_AUX *aux;
 238         ASN1_OBJECT *objtmp;
 239         int rc;
 240
 241         if (!(objtmp = OBJ_dup(obj)))
 242                 return 0;
 243         if (!(aux = aux_get(x)))
 244                 goto err;
 245         if (!aux->reject && !(aux->reject = sk_ASN1_OBJECT_new_null()))
 246                 goto err;
 247         rc = sk_ASN1_OBJECT_push(aux->reject, objtmp);
 248         if (rc != 0)
 249                 return rc;
 250
 251 err:
 252         ASN1_OBJECT_free(objtmp);
 253         return 0;
 254 }
 255
 256 void
 257 X509_trust_clear(X509 *x)
 258 {
 259         if (x->aux && x->aux->trust) {
 260                 sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free);
 261                 x->aux->trust = NULL;
 262         }
 263 }
 264
 265 void
 266 X509_reject_clear(X509 *x)
 267 {
 268         if (x->aux && x->aux->reject) {
 269                 sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free);
 270                 x->aux->reject = NULL;
 271         }
 272 }
 273
 274 static const ASN1_TEMPLATE X509_CERT_PAIR_seq_tt[] = {
 275         {
 276                 .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL,
 277                 .tag = 0,
 278                 .offset = offsetof(X509_CERT_PAIR, forward),
 279                 .field_name = "forward",
 280                 .item = &X509_it,
 281         },
 282         {
 283                 .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL,
 284                 .tag = 1,
 285                 .offset = offsetof(X509_CERT_PAIR, reverse),
 286                 .field_name = "reverse",
 287                 .item = &X509_it,
 288         },
 289 };
 290
 291 const ASN1_ITEM X509_CERT_PAIR_it = {
 292         .itype = ASN1_ITYPE_SEQUENCE,
 293         .utype = V_ASN1_SEQUENCE,
 294         .templates = X509_CERT_PAIR_seq_tt,
 295         .tcount = sizeof(X509_CERT_PAIR_seq_tt) / sizeof(ASN1_TEMPLATE),
 296         .funcs = NULL,
 297         .size = sizeof(X509_CERT_PAIR),
 298         .sname = "X509_CERT_PAIR",
 299 };
 300
 301
 302 X509_CERT_PAIR *
 303 d2i_X509_CERT_PAIR(X509_CERT_PAIR **a, const unsigned char **in, long len)
 304 {
 305         return (X509_CERT_PAIR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
 306             &X509_CERT_PAIR_it);
 307 }
 308
 309 int
 310 i2d_X509_CERT_PAIR(X509_CERT_PAIR *a, unsigned char **out)
 311 {
 312         return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CERT_PAIR_it);
 313 }
 314
 315 X509_CERT_PAIR *
 316 X509_CERT_PAIR_new(void)
 317 {
 318         return (X509_CERT_PAIR *)ASN1_item_new(&X509_CERT_PAIR_it);
 319 }
 320
 321 void
 322 X509_CERT_PAIR_free(X509_CERT_PAIR *a)
 323 {
 324         ASN1_item_free((ASN1_VALUE *)a, &X509_CERT_PAIR_it);
 325 }