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_enc(X509_CINF, enc, 0) = {
  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_enc(X509_CINF, 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 {
  86     X509 *ret = (X509 *)*pval;
  87
  88     switch (operation) {
  89
  90     case ASN1_OP_NEW_POST:
  91         ret->valid = 0;
  92         ret->name = NULL;
  93         ret->ex_flags = 0;
  94         ret->ex_pathlen = -1;
  95         ret->skid = NULL;
  96         ret->akid = NULL;
  97 #ifndef OPENSSL_NO_RFC3779
  98         ret->rfc3779_addr = NULL;
  99         ret->rfc3779_asid = NULL;
 100 #endif
 101         ret->aux = NULL;
 102         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 103         break;
 104
 105     case ASN1_OP_D2I_POST:
 106         if (ret->name != NULL)
 107             OPENSSL_free(ret->name);
 108         ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
 109         break;
 110
 111     case ASN1_OP_FREE_POST:
 112         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 113         X509_CERT_AUX_free(ret->aux);
 114         ASN1_OCTET_STRING_free(ret->skid);
 115         AUTHORITY_KEYID_free(ret->akid);
 116         policy_cache_free(ret->policy_cache);
 117 #ifndef OPENSSL_NO_RFC3779
 118         sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
 119         ASIdentifiers_free(ret->rfc3779_asid);
 120 #endif
 121
 122         if (ret->name != NULL)
 123             OPENSSL_free(ret->name);
 124         break;
 125
 126     }
 127
 128     return 1;
 129
 130 }
 131
 132 ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
 133         ASN1_SIMPLE(X509, cert_info, X509_CINF),
 134         ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
 135         ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
 136 } ASN1_SEQUENCE_END_ref(X509, X509)
 137
 138 IMPLEMENT_ASN1_FUNCTIONS(X509)
 139
 140 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
 141
 142 static ASN1_METHOD meth = {
 143     (I2D_OF(void)) i2d_X509,
 144     (D2I_OF(void)) d2i_X509,
 145     (void *(*)(void))X509_new,
 146     (void (*)(void *))X509_free
 147 };
 148
 149 ASN1_METHOD *X509_asn1_meth(void)
 150 {
 151     return (&meth);
 152 }
 153
 154 int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 155                           CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
 156 {
 157     return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
 158                                    new_func, dup_func, free_func);
 159 }
 160
 161 int X509_set_ex_data(X509 *r, int idx, void *arg)
 162 {
 163     return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
 164 }
 165
 166 void *X509_get_ex_data(X509 *r, int idx)
 167 {
 168     return (CRYPTO_get_ex_data(&r->ex_data, idx));
 169 }
 170
 171 /*
 172  * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
 173  * extra info tagged on the end. Since these functions set how a certificate
 174  * is trusted they should only be used when the certificate comes from a
 175  * reliable source such as local storage.
 176  */
 177
 178 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
 179 {
 180     const unsigned char *q;
 181     X509 *ret;
 182     int freeret = 0;
 183
 184     /* Save start position */
 185     q = *pp;
 186
 187     if(!a || *a == NULL) {
 188         freeret = 1;
 189     }
 190     ret = d2i_X509(a, pp, length);
 191     /* If certificate unreadable then forget it */
 192     if (!ret)
 193         return NULL;
 194     /* update length */
 195     length -= *pp - q;
 196     if (!length)
 197         return ret;
 198     if (!d2i_X509_CERT_AUX(&ret->aux, pp, length))
 199         goto err;
 200     return ret;
 201  err:
 202     if(freeret) {
 203         X509_free(ret);
 204         if (a)
 205             *a = NULL;
 206     }
 207     return NULL;
 208 }
 209
 210 int i2d_X509_AUX(X509 *a, unsigned char **pp)
 211 {
 212     int length;
 213     length = i2d_X509(a, pp);
 214     if (a)
 215         length += i2d_X509_CERT_AUX(a->aux, pp);
 216     return length;
 217 }