x_x509.c revision 68651
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/asn1_mac.h> 63#include <openssl/x509.h> 64#include <openssl/x509v3.h> 65 66static int x509_meth_num = 0; 67static STACK_OF(CRYPTO_EX_DATA_FUNCS) *x509_meth = NULL; 68 69static ASN1_METHOD meth={ 70 (int (*)()) i2d_X509, 71 (char *(*)())d2i_X509, 72 (char *(*)())X509_new, 73 (void (*)()) X509_free}; 74 75ASN1_METHOD *X509_asn1_meth(void) 76 { 77 return(&meth); 78 } 79 80int i2d_X509(X509 *a, unsigned char **pp) 81 { 82 M_ASN1_I2D_vars(a); 83 84 M_ASN1_I2D_len(a->cert_info, i2d_X509_CINF); 85 M_ASN1_I2D_len(a->sig_alg, i2d_X509_ALGOR); 86 M_ASN1_I2D_len(a->signature, i2d_ASN1_BIT_STRING); 87 88 M_ASN1_I2D_seq_total(); 89 90 M_ASN1_I2D_put(a->cert_info, i2d_X509_CINF); 91 M_ASN1_I2D_put(a->sig_alg, i2d_X509_ALGOR); 92 M_ASN1_I2D_put(a->signature, i2d_ASN1_BIT_STRING); 93 94 M_ASN1_I2D_finish(); 95 } 96 97X509 *d2i_X509(X509 **a, unsigned char **pp, long length) 98 { 99 M_ASN1_D2I_vars(a,X509 *,X509_new); 100 101 M_ASN1_D2I_Init(); 102 M_ASN1_D2I_start_sequence(); 103 M_ASN1_D2I_get(ret->cert_info,d2i_X509_CINF); 104 M_ASN1_D2I_get(ret->sig_alg,d2i_X509_ALGOR); 105 M_ASN1_D2I_get(ret->signature,d2i_ASN1_BIT_STRING); 106 if (ret->name != NULL) OPENSSL_free(ret->name); 107 ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0); 108 109 M_ASN1_D2I_Finish(a,X509_free,ASN1_F_D2I_X509); 110 } 111 112X509 *X509_new(void) 113 { 114 X509 *ret=NULL; 115 ASN1_CTX c; 116 117 M_ASN1_New_Malloc(ret,X509); 118 ret->valid=0; 119 ret->references=1; 120 ret->name = NULL; 121 ret->ex_flags = 0; 122 ret->ex_pathlen = -1; 123 ret->skid = NULL; 124 ret->akid = NULL; 125 ret->aux = NULL; 126 M_ASN1_New(ret->cert_info,X509_CINF_new); 127 M_ASN1_New(ret->sig_alg,X509_ALGOR_new); 128 M_ASN1_New(ret->signature,M_ASN1_BIT_STRING_new); 129 CRYPTO_new_ex_data(x509_meth, ret, &ret->ex_data); 130 return(ret); 131 M_ASN1_New_Error(ASN1_F_X509_NEW); 132 } 133 134void X509_free(X509 *a) 135 { 136 int i; 137 138 if (a == NULL) return; 139 140 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_X509); 141#ifdef REF_PRINT 142 REF_PRINT("X509",a); 143#endif 144 if (i > 0) return; 145#ifdef REF_CHECK 146 if (i < 0) 147 { 148 fprintf(stderr,"X509_free, bad reference count\n"); 149 abort(); 150 } 151#endif 152 153 CRYPTO_free_ex_data(x509_meth,a,&a->ex_data); 154 X509_CINF_free(a->cert_info); 155 X509_ALGOR_free(a->sig_alg); 156 M_ASN1_BIT_STRING_free(a->signature); 157 X509_CERT_AUX_free(a->aux); 158 ASN1_OCTET_STRING_free(a->skid); 159 AUTHORITY_KEYID_free(a->akid); 160 161 if (a->name != NULL) OPENSSL_free(a->name); 162 OPENSSL_free(a); 163 } 164 165int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 166 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 167 { 168 x509_meth_num++; 169 return(CRYPTO_get_ex_new_index(x509_meth_num-1, 170 &x509_meth,argl,argp,new_func,dup_func,free_func)); 171 } 172 173int X509_set_ex_data(X509 *r, int idx, void *arg) 174 { 175 return(CRYPTO_set_ex_data(&r->ex_data,idx,arg)); 176 } 177 178void *X509_get_ex_data(X509 *r, int idx) 179 { 180 return(CRYPTO_get_ex_data(&r->ex_data,idx)); 181 } 182 183/* X509_AUX ASN1 routines. X509_AUX is the name given to 184 * a certificate with extra info tagged on the end. Since these 185 * functions set how a certificate is trusted they should only 186 * be used when the certificate comes from a reliable source 187 * such as local storage. 188 * 189 */ 190 191X509 *d2i_X509_AUX(X509 **a, unsigned char **pp, long length) 192{ 193 unsigned char *q; 194 X509 *ret; 195 /* Save start position */ 196 q = *pp; 197 ret = d2i_X509(a, pp, length); 198 /* If certificate unreadable then forget it */ 199 if(!ret) return NULL; 200 /* update length */ 201 length -= *pp - q; 202 if(!length) return ret; 203 if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err; 204 return ret; 205 err: 206 X509_free(ret); 207 return NULL; 208} 209 210int i2d_X509_AUX(X509 *a, unsigned char **pp) 211{ 212 int length; 213 length = i2d_X509(a, pp); 214 if(a) length += i2d_X509_CERT_AUX(a->aux, pp); 215 return length; 216} 217