crypto/asn1/x_x509.c

   1 /* crypto/asn1/x_x509.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/evp.h>
  62 #include <openssl/asn1t.h>
  63 #include <openssl/x509.h>
  64 #include <openssl/x509v3.h>
  65
  66 ASN1_SEQUENCE(X509_CINF) = {
  67         ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
  68         ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
  69         ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
  70         ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
  71         ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
  72         ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
  73         ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
  74         ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
  75         ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
  76         ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
  77 } ASN1_SEQUENCE_END(X509_CINF)
  78
  79 IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
  80 /* X509 top level structure needs a bit of customisation */
  81
  82 extern void policy_cache_free(X509_POLICY_CACHE *cache);
  83
  84 static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  85                                                                 void *exarg)
  86 {
  87         X509 *ret = (X509 *)*pval;
  88
  89         switch(operation) {
  90
  91                 case ASN1_OP_NEW_POST:
  92                 ret->valid=0;
  93                 ret->name = NULL;
  94                 ret->ex_flags = 0;
  95                 ret->ex_pathlen = -1;
  96                 ret->skid = NULL;
  97                 ret->akid = NULL;
  98                 ret->aux = NULL;
  99                 ret->crldp = NULL;
 100                 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 101                 break;
 102
 103                 case ASN1_OP_D2I_POST:
 104                 if (ret->name != NULL) OPENSSL_free(ret->name);
 105                 ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0);
 106                 break;
 107
 108                 case ASN1_OP_FREE_POST:
 109                 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 110                 X509_CERT_AUX_free(ret->aux);
 111                 ASN1_OCTET_STRING_free(ret->skid);
 112                 AUTHORITY_KEYID_free(ret->akid);
 113                 CRL_DIST_POINTS_free(ret->crldp);
 114                 policy_cache_free(ret->policy_cache);
 115
 116                 if (ret->name != NULL) OPENSSL_free(ret->name);
 117                 break;
 118
 119         }
 120
 121         return 1;
 122
 123 }
 124
 125 ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
 126         ASN1_SIMPLE(X509, cert_info, X509_CINF),
 127         ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
 128         ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
 129 } ASN1_SEQUENCE_END_ref(X509, X509)
 130
 131 IMPLEMENT_ASN1_FUNCTIONS(X509)
 132 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
 133
 134 int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 135              CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
 136         {
 137         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
 138                                 new_func, dup_func, free_func);
 139         }
 140
 141 int X509_set_ex_data(X509 *r, int idx, void *arg)
 142         {
 143         return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
 144         }
 145
 146 void *X509_get_ex_data(X509 *r, int idx)
 147         {
 148         return(CRYPTO_get_ex_data(&r->ex_data,idx));
 149         }
 150
 151 /* X509_AUX ASN1 routines. X509_AUX is the name given to
 152  * a certificate with extra info tagged on the end. Since these
 153  * functions set how a certificate is trusted they should only
 154  * be used when the certificate comes from a reliable source
 155  * such as local storage.
 156  *
 157  */
 158
 159 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
 160 {
 161         const unsigned char *q;
 162         X509 *ret;
 163         /* Save start position */
 164         q = *pp;
 165         ret = d2i_X509(a, pp, length);
 166         /* If certificate unreadable then forget it */
 167         if(!ret) return NULL;
 168         /* update length */
 169         length -= *pp - q;
 170         if(!length) return ret;
 171         if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err;
 172         return ret;
 173         err:
 174         X509_free(ret);
 175         return NULL;
 176 }
 177
 178 int i2d_X509_AUX(X509 *a, unsigned char **pp)
 179 {
 180         int length;
 181         length = i2d_X509(a, pp);
 182         if(a) length += i2d_X509_CERT_AUX(a->aux, pp);
 183         return length;
 184 }