crypto/asn1/x_crl.c

   1 /* crypto/asn1/x_crl.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include <openssl/asn1t.h>
  62 #include <openssl/x509.h>
  63 #include <openssl/x509v3.h>
  64
  65 static int X509_REVOKED_cmp(const X509_REVOKED * const *a,
  66                                 const X509_REVOKED * const *b);
  67 static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
  68
  69 ASN1_SEQUENCE(X509_REVOKED) = {
  70         ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
  71         ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
  72         ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
  73 } ASN1_SEQUENCE_END(X509_REVOKED)
  74
  75 /* The X509_CRL_INFO structure needs a bit of customisation.
  76  * Since we cache the original encoding the signature wont be affected by
  77  * reordering of the revoked field.
  78  */
  79 static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  80                                                                 void *exarg)
  81 {
  82         X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;
  83
  84         if(!a || !a->revoked) return 1;
  85         switch(operation) {
  86                 /* Just set cmp function here. We don't sort because that
  87                  * would affect the output of X509_CRL_print().
  88                  */
  89                 case ASN1_OP_D2I_POST:
  90                 sk_X509_REVOKED_set_cmp_func(a->revoked,X509_REVOKED_cmp);
  91                 break;
  92         }
  93         return 1;
  94 }
  95
  96
  97 ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
  98         ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
  99         ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
 100         ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
 101         ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
 102         ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
 103         ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
 104         ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
 105 } ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
 106
 107 /* The X509_CRL structure needs a bit of customisation. Cache some extensions
 108  * and hash of the whole CRL.
 109  */
 110 static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 111                                                                 void *exarg)
 112         {
 113         X509_CRL *crl = (X509_CRL *)*pval;
 114
 115         switch(operation)
 116                 {
 117                 case ASN1_OP_NEW_POST:
 118                 crl->idp = NULL;
 119                 crl->akid = NULL;
 120                 crl->flags = 0;
 121                 crl->idp_flags = 0;
 122                 break;
 123
 124                 case ASN1_OP_D2I_POST:
 125 #ifndef OPENSSL_NO_SHA
 126                 X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
 127 #endif
 128                 crl->idp = X509_CRL_get_ext_d2i(crl,
 129                                 NID_issuing_distribution_point, NULL, NULL);
 130                 if (crl->idp)
 131                         setup_idp(crl, crl->idp);
 132
 133                 crl->akid = X509_CRL_get_ext_d2i(crl,
 134                                 NID_authority_key_identifier, NULL, NULL);
 135                 break;
 136
 137                 case ASN1_OP_FREE_POST:
 138                 if (crl->akid)
 139                         AUTHORITY_KEYID_free(crl->akid);
 140                 if (crl->idp)
 141                         ISSUING_DIST_POINT_free(crl->idp);
 142                 break;
 143                 }
 144         return 1;
 145         }
 146
 147 /* Convert IDP into a more convenient form */
 148
 149 static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
 150         {
 151         int idp_only = 0;
 152         /* Set various flags according to IDP */
 153         crl->idp_flags |= IDP_PRESENT;
 154         if (idp->onlyuser > 0)
 155                 {
 156                 idp_only++;
 157                 crl->idp_flags |= IDP_ONLYUSER;
 158                 }
 159         if (idp->onlyCA > 0)
 160                 {
 161                 idp_only++;
 162                 crl->idp_flags |= IDP_ONLYCA;
 163                 }
 164         if (idp->onlyattr > 0)
 165                 {
 166                 idp_only++;
 167                 crl->idp_flags |= IDP_ONLYATTR;
 168                 }
 169
 170         if (idp_only > 1)
 171                 crl->idp_flags |= IDP_INVALID;
 172
 173         if (idp->indirectCRL > 0)
 174                 crl->idp_flags |= IDP_INDIRECT;
 175
 176         if (idp->onlysomereasons)
 177                 {
 178                 crl->idp_flags |= IDP_REASONS;
 179                 if (idp->onlysomereasons->length > 0)
 180                         crl->idp_reasons = idp->onlysomereasons->data[0];
 181                 if (idp->onlysomereasons->length > 1)
 182                         crl->idp_reasons |=
 183                                 (idp->onlysomereasons->data[1] << 8);
 184                 }
 185         }
 186
 187 ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
 188         ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
 189         ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
 190         ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
 191 } ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
 192
 193 IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
 194 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
 195 IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
 196 IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
 197
 198 static int X509_REVOKED_cmp(const X509_REVOKED * const *a,
 199                         const X509_REVOKED * const *b)
 200         {
 201         return(ASN1_STRING_cmp(
 202                 (ASN1_STRING *)(*a)->serialNumber,
 203                 (ASN1_STRING *)(*b)->serialNumber));
 204         }
 205
 206 int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
 207 {
 208         X509_CRL_INFO *inf;
 209         inf = crl->crl;
 210         if(!inf->revoked)
 211                 inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
 212         if(!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
 213                 ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
 214                 return 0;
 215         }
 216         inf->enc.modified = 1;
 217         return 1;
 218 }
 219
 220 IMPLEMENT_STACK_OF(X509_REVOKED)
 221 IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
 222 IMPLEMENT_STACK_OF(X509_CRL)
 223 IMPLEMENT_ASN1_SET_OF(X509_CRL)