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 #include <stdio.h> 59 60 #include <openssl/asn1t.h> 61 #include <openssl/evp.h> 62 #include <openssl/mem.h> 63 #include <openssl/obj.h> 64 #include <openssl/thread.h> 65 #include <openssl/x509.h> 66 #include <openssl/x509v3.h> 67 68 #include "../internal.h" 69 70 71 static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT; 72 73 ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = { 74 ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0), 75 ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER), 76 ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR), 77 ASN1_SIMPLE(X509_CINF, issuer, X509_NAME), 78 ASN1_SIMPLE(X509_CINF, validity, X509_VAL), 79 ASN1_SIMPLE(X509_CINF, subject, X509_NAME), 80 ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY), 81 ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1), 82 ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2), 83 ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3) 84 } ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF) 85 86 IMPLEMENT_ASN1_FUNCTIONS(X509_CINF) 87 /* X509 top level structure needs a bit of customisation */ 88 89 extern void policy_cache_free(X509_POLICY_CACHE *cache); 90 91 static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 92 void *exarg) 93 { 94 X509 *ret = (X509 *)*pval; 95 96 switch(operation) { 97 98 case ASN1_OP_NEW_POST: 99 ret->valid=0; 100 ret->name = NULL; 101 ret->ex_flags = 0; 102 ret->ex_pathlen = -1; 103 ret->skid = NULL; 104 ret->akid = NULL; 105 ret->aux = NULL; 106 ret->crldp = NULL; 107 CRYPTO_new_ex_data(&g_ex_data_class, ret, &ret->ex_data); 108 break; 109 110 case ASN1_OP_D2I_POST: 111 if (ret->name != NULL) OPENSSL_free(ret->name); 112 ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0); 113 break; 114 115 case ASN1_OP_FREE_POST: 116 CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data); 117 X509_CERT_AUX_free(ret->aux); 118 ASN1_OCTET_STRING_free(ret->skid); 119 AUTHORITY_KEYID_free(ret->akid); 120 CRL_DIST_POINTS_free(ret->crldp); 121 policy_cache_free(ret->policy_cache); 122 GENERAL_NAMES_free(ret->altname); 123 NAME_CONSTRAINTS_free(ret->nc); 124 125 if (ret->name != NULL) OPENSSL_free(ret->name); 126 break; 127 128 } 129 130 return 1; 131 132 } 133 134 ASN1_SEQUENCE_ref(X509, x509_cb) = { 135 ASN1_SIMPLE(X509, cert_info, X509_CINF), 136 ASN1_SIMPLE(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 IMPLEMENT_ASN1_DUP_FUNCTION(X509) 142 143 X509 *X509_up_ref(X509 *x) 144 { 145 CRYPTO_refcount_inc(&x->references); 146 return x; 147 } 148 149 int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 150 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 151 { 152 int index; 153 if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp, 154 new_func, dup_func, free_func)) 155 { 156 return -1; 157 } 158 return index; 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 /* X509_AUX ASN1 routines. X509_AUX is the name given to 172 * a certificate with extra info tagged on the end. Since these 173 * functions set how a certificate is trusted they should only 174 * be used when the certificate comes from a reliable source 175 * such as local storage. 176 * 177 */ 178 179 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length) 180 { 181 const unsigned char *q; 182 X509 *ret; 183 int freeret = 0; 184 185 /* Save start position */ 186 q = *pp; 187 188 if (!a || *a == NULL) 189 freeret = 1; 190 ret = d2i_X509(a, pp, length); 191 /* If certificate unreadable then forget it */ 192 if(!ret) return NULL; 193 /* update length */ 194 length -= *pp - q; 195 if(!length) return ret; 196 if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err; 197 return ret; 198 err: 199 if (freeret) 200 { 201 X509_free(ret); 202 if (a) 203 *a = NULL; 204 } 205 return NULL; 206 } 207 208 int i2d_X509_AUX(X509 *a, unsigned char **pp) 209 { 210 int length; 211 length = i2d_X509(a, pp); 212 if(a) length += i2d_X509_CERT_AUX(a->aux, pp); 213 return length; 214 } 215 216 void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, 217 const X509 *x) 218 { 219 if (psig) 220 *psig = x->signature; 221 if (palg) 222 *palg = x->sig_alg; 223 } 224 225 int X509_get_signature_nid(const X509 *x) 226 { 227 return OBJ_obj2nid(x->sig_alg->algorithm); 228 } 229
