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      1 /* crypto/asn1/x_x509.c */
      2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com)
      3  * All rights reserved.
      4  *
      5  * This package is an SSL implementation written
      6  * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 #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 		if (ret->name != NULL) 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 
    126 		if (ret->name != NULL) OPENSSL_free(ret->name);
    127 		break;
    128 
    129 	}
    130 
    131 	return 1;
    132 
    133 }
    134 
    135 ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
    136 	ASN1_SIMPLE(X509, cert_info, X509_CINF),
    137 	ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
    138 	ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
    139 } ASN1_SEQUENCE_END_ref(X509, X509)
    140 
    141 IMPLEMENT_ASN1_FUNCTIONS(X509)
    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 /* X509_AUX ASN1 routines. X509_AUX is the name given to
    162  * a certificate with extra info tagged on the end. Since these
    163  * functions set how a certificate is trusted they should only
    164  * be used when the certificate comes from a reliable source
    165  * such as local storage.
    166  *
    167  */
    168 
    169 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
    170 {
    171 	const unsigned char *q;
    172 	X509 *ret;
    173 	/* Save start position */
    174 	q = *pp;
    175 	ret = d2i_X509(a, pp, length);
    176 	/* If certificate unreadable then forget it */
    177 	if(!ret) return NULL;
    178 	/* update length */
    179 	length -= *pp - q;
    180 	if(!length) return ret;
    181 	if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err;
    182 	return ret;
    183 	err:
    184 	X509_free(ret);
    185 	return NULL;
    186 }
    187 
    188 int i2d_X509_AUX(X509 *a, unsigned char **pp)
    189 {
    190 	int length;
    191 	length = i2d_X509(a, pp);
    192 	if(a) length += i2d_X509_CERT_AUX(a->aux, pp);
    193 	return length;
    194 }
    195