crypto/x509/x_x509.c

   1 /* crypto/x509/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 "internal/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_EMBED(X509_CINF, signature, X509_ALGOR),
  70         ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
  71         ASN1_EMBED(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                    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 #ifndef OPENSSL_NO_RFC3779
  99         ret->rfc3779_addr = NULL;
 100         ret->rfc3779_asid = NULL;
 101 #endif
 102         ret->aux = NULL;
 103         ret->crldp = NULL;
 104         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 105         break;
 106
 107     case ASN1_OP_D2I_POST:
 108         OPENSSL_free(ret->name);
 109         ret->name = X509_NAME_oneline(ret->cert_info.subject, NULL, 0);
 110         break;
 111
 112     case ASN1_OP_FREE_POST:
 113         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 114         X509_CERT_AUX_free(ret->aux);
 115         ASN1_OCTET_STRING_free(ret->skid);
 116         AUTHORITY_KEYID_free(ret->akid);
 117         CRL_DIST_POINTS_free(ret->crldp);
 118         policy_cache_free(ret->policy_cache);
 119         GENERAL_NAMES_free(ret->altname);
 120         NAME_CONSTRAINTS_free(ret->nc);
 121 #ifndef OPENSSL_NO_RFC3779
 122         sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
 123         ASIdentifiers_free(ret->rfc3779_asid);
 124 #endif
 125         OPENSSL_free(ret->name);
 126         break;
 127
 128     }
 129
 130     return 1;
 131
 132 }
 133
 134 ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
 135         ASN1_EMBED(X509, cert_info, X509_CINF),
 136         ASN1_EMBED(X509, sig_alg, X509_ALGOR),
 137         ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
 138 } ASN1_SEQUENCE_END_ref(X509, X509)
 139
 140 IMPLEMENT_ASN1_FUNCTIONS(X509)
 141
 142 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
 143
 144 int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 145                           CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
 146 {
 147     return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
 148                                    new_func, dup_func, free_func);
 149 }
 150
 151 int X509_set_ex_data(X509 *r, int idx, void *arg)
 152 {
 153     return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
 154 }
 155
 156 void *X509_get_ex_data(X509 *r, int idx)
 157 {
 158     return (CRYPTO_get_ex_data(&r->ex_data, idx));
 159 }
 160
 161 /*
 162  * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
 163  * extra info tagged on the end. Since these functions set how a certificate
 164  * is trusted they should only be used when the certificate comes from a
 165  * reliable source such as local storage.
 166  */
 167
 168 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
 169 {
 170     const unsigned char *q;
 171     X509 *ret;
 172     int freeret = 0;
 173
 174     /* Save start position */
 175     q = *pp;
 176
 177     if (!a || *a == NULL) {
 178         freeret = 1;
 179     }
 180     ret = d2i_X509(a, &q, length);
 181     /* If certificate unreadable then forget it */
 182     if (!ret)
 183         return NULL;
 184     /* update length */
 185     length -= q - *pp;
 186     if (!length)
 187         return ret;
 188     if (!d2i_X509_CERT_AUX(&ret->aux, &q, length))
 189         goto err;
 190     *pp = q;
 191     return ret;
 192  err:
 193     if (freeret) {
 194         X509_free(ret);
 195         if (a)
 196             *a = NULL;
 197     }
 198     return NULL;
 199 }
 200
 201 int i2d_X509_AUX(X509 *a, unsigned char **pp)
 202 {
 203     int length;
 204     length = i2d_X509(a, pp);
 205     if (a)
 206         length += i2d_X509_CERT_AUX(a->aux, pp);
 207     return length;
 208 }
 209
 210 int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
 211 {
 212     x->cert_info.enc.modified = 1;
 213     return i2d_X509_CINF(&x->cert_info, pp);
 214 }
 215
 216 void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, X509 *x)
 217 {
 218     if (psig)
 219         *psig = x->signature;
 220     if (palg)
 221         *palg = &x->sig_alg;
 222 }
 223
 224 int X509_get_signature_nid(const X509 *x)
 225 {
 226     return OBJ_obj2nid(x->sig_alg.algorithm);
 227 }