crypto/x509/x_x509.c

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57
  58 #include <stdio.h>
  59 #include "internal/cryptlib.h"
  60 #include <openssl/evp.h>
  61 #include <openssl/asn1t.h>
  62 #include <openssl/x509.h>
  63 #include <openssl/x509v3.h>
  64 #include "internal/x509_int.h"
  65
  66 ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
  67         ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
  68         ASN1_EMBED(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->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         ret->crldp = NULL;
 103         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
 104         break;
 105
 106     case ASN1_OP_D2I_POST:
 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         CRL_DIST_POINTS_free(ret->crldp);
 117         policy_cache_free(ret->policy_cache);
 118         GENERAL_NAMES_free(ret->altname);
 119         NAME_CONSTRAINTS_free(ret->nc);
 120 #ifndef OPENSSL_NO_RFC3779
 121         sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
 122         ASIdentifiers_free(ret->rfc3779_asid);
 123 #endif
 124         OPENSSL_free(ret->name);
 125         break;
 126
 127     }
 128
 129     return 1;
 130
 131 }
 132
 133 ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
 134         ASN1_EMBED(X509, cert_info, X509_CINF),
 135         ASN1_EMBED(X509, sig_alg, X509_ALGOR),
 136         ASN1_EMBED(X509, signature, ASN1_BIT_STRING)
 137 } ASN1_SEQUENCE_END_ref(X509, X509)
 138
 139 IMPLEMENT_ASN1_FUNCTIONS(X509)
 140
 141 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
 142
 143 int X509_set_ex_data(X509 *r, int idx, void *arg)
 144 {
 145     return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
 146 }
 147
 148 void *X509_get_ex_data(X509 *r, int idx)
 149 {
 150     return (CRYPTO_get_ex_data(&r->ex_data, idx));
 151 }
 152
 153 /*
 154  * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
 155  * extra info tagged on the end. Since these functions set how a certificate
 156  * is trusted they should only be used when the certificate comes from a
 157  * reliable source such as local storage.
 158  */
 159
 160 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
 161 {
 162     const unsigned char *q;
 163     X509 *ret;
 164     int freeret = 0;
 165
 166     /* Save start position */
 167     q = *pp;
 168
 169     if (a == NULL || *a == NULL)
 170         freeret = 1;
 171     ret = d2i_X509(a, &q, length);
 172     /* If certificate unreadable then forget it */
 173     if (ret == NULL)
 174         return NULL;
 175     /* update length */
 176     length -= q - *pp;
 177     if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
 178         goto err;
 179     *pp = q;
 180     return ret;
 181  err:
 182     if (freeret) {
 183         X509_free(ret);
 184         if (a)
 185             *a = NULL;
 186     }
 187     return NULL;
 188 }
 189
 190 int i2d_X509_AUX(X509 *a, unsigned char **pp)
 191 {
 192     int length;
 193     length = i2d_X509(a, pp);
 194     if (a)
 195         length += i2d_X509_CERT_AUX(a->aux, pp);
 196     return length;
 197 }
 198
 199 int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
 200 {
 201     x->cert_info.enc.modified = 1;
 202     return i2d_X509_CINF(&x->cert_info, pp);
 203 }
 204
 205 void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, X509 *x)
 206 {
 207     if (psig)
 208         *psig = &x->signature;
 209     if (palg)
 210         *palg = &x->sig_alg;
 211 }
 212
 213 int X509_get_signature_nid(const X509 *x)
 214 {
 215     return OBJ_obj2nid(x->sig_alg.algorithm);
 216 }