crypto/x509v3/v3_akey.c

   1 /* v3_akey.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 1999.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include "conf.h"
  62 #include "asn1.h"
  63 #include "asn1_mac.h"
  64 #include "x509v3.h"
  65
  66 #ifndef NOPROTO
  67 static STACK *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK *extlist);
  68 static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK *values);
  69
  70 #else
  71
  72 static STACK *i2v_AUTHORITY_KEYID();
  73 static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID();
  74
  75 #endif
  76
  77 X509V3_EXT_METHOD v3_akey_id = {
  78 NID_authority_key_identifier, 0,
  79 (X509V3_EXT_NEW)AUTHORITY_KEYID_new,
  80 AUTHORITY_KEYID_free,
  81 (X509V3_EXT_D2I)d2i_AUTHORITY_KEYID,
  82 i2d_AUTHORITY_KEYID,
  83 NULL, NULL,
  84 (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,
  85 (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
  86 NULL,NULL,
  87 NULL
  88 };
  89
  90
  91 /*
  92  * ASN1err(ASN1_F_AUTHORITY_KEYID_NEW,ERR_R_MALLOC_FAILURE);
  93  * ASN1err(ASN1_F_D2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE);
  94  */
  95
  96 int i2d_AUTHORITY_KEYID(a,pp)
  97 AUTHORITY_KEYID *a;
  98 unsigned char **pp;
  99 {
 100         M_ASN1_I2D_vars(a);
 101
 102         M_ASN1_I2D_len_IMP_opt (a->keyid, i2d_ASN1_OCTET_STRING);
 103         M_ASN1_I2D_len_IMP_opt (a->issuer, i2d_GENERAL_NAMES);
 104         M_ASN1_I2D_len_IMP_opt (a->serial, i2d_ASN1_INTEGER);
 105
 106         M_ASN1_I2D_seq_total();
 107
 108         M_ASN1_I2D_put_IMP_opt (a->keyid, i2d_ASN1_OCTET_STRING, 0);
 109         M_ASN1_I2D_put_IMP_opt (a->issuer, i2d_GENERAL_NAMES, 1);
 110         M_ASN1_I2D_put_IMP_opt (a->serial, i2d_ASN1_INTEGER, 2);
 111
 112         M_ASN1_I2D_finish();
 113 }
 114
 115 AUTHORITY_KEYID *AUTHORITY_KEYID_new()
 116 {
 117         AUTHORITY_KEYID *ret=NULL;
 118         ASN1_CTX c;
 119         M_ASN1_New_Malloc(ret, AUTHORITY_KEYID);
 120         ret->keyid = NULL;
 121         ret->issuer = NULL;
 122         ret->serial = NULL;
 123         return (ret);
 124         M_ASN1_New_Error(ASN1_F_AUTHORITY_KEYID_NEW);
 125 }
 126
 127 AUTHORITY_KEYID *d2i_AUTHORITY_KEYID(a,pp,length)
 128 AUTHORITY_KEYID **a;
 129 unsigned char **pp;
 130 long length;
 131 {
 132         M_ASN1_D2I_vars(a,AUTHORITY_KEYID *,AUTHORITY_KEYID_new);
 133         M_ASN1_D2I_Init();
 134         M_ASN1_D2I_start_sequence();
 135         M_ASN1_D2I_get_IMP_opt (ret->keyid, d2i_ASN1_OCTET_STRING, 0,
 136                                                         V_ASN1_OCTET_STRING);
 137         M_ASN1_D2I_get_IMP_opt (ret->issuer, d2i_GENERAL_NAMES, 1,
 138                                                         V_ASN1_SEQUENCE);
 139         M_ASN1_D2I_get_IMP_opt (ret->serial, d2i_ASN1_INTEGER, 2,
 140                                                         V_ASN1_INTEGER);
 141         M_ASN1_D2I_Finish(a, AUTHORITY_KEYID_free, ASN1_F_D2I_AUTHORITY_KEYID);
 142 }
 143
 144 void AUTHORITY_KEYID_free(a)
 145 AUTHORITY_KEYID *a;
 146 {
 147         if (a == NULL) return;
 148         ASN1_OCTET_STRING_free(a->keyid);
 149         sk_pop_free(a->issuer, GENERAL_NAME_free);
 150         ASN1_INTEGER_free (a->serial);
 151         Free ((char *)a);
 152 }
 153
 154 static STACK *i2v_AUTHORITY_KEYID(method, akeyid, extlist)
 155 X509V3_EXT_METHOD *method;
 156 AUTHORITY_KEYID *akeyid;
 157 STACK *extlist;
 158 {
 159         char *tmp;
 160         if(akeyid->keyid) {
 161                 tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
 162                 X509V3_add_value("keyid", tmp, &extlist);
 163                 Free(tmp);
 164         }
 165         if(akeyid->issuer)
 166                 extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
 167         if(akeyid->serial) {
 168                 tmp = hex_to_string(akeyid->serial->data,
 169                                                  akeyid->serial->length);
 170                 X509V3_add_value("serial", tmp, &extlist);
 171                 Free(tmp);
 172         }
 173         return extlist;
 174 }
 175
 176 /* Currently two options:
 177  * keyid: use the issuers subject keyid, the value 'always' means its is
 178  * an error if the issuer certificate doesn't have a key id.
 179  * issuer: use the issuers cert issuer and serial number. The default is
 180  * to only use this if keyid is not present. With the option 'always'
 181  * this is always included.
 182  */
 183
 184 static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(method, ctx, values)
 185 X509V3_EXT_METHOD *method;
 186 X509V3_CTX *ctx;
 187 STACK *values;
 188 {
 189 char keyid=0, issuer=0;
 190 int i;
 191 CONF_VALUE *cnf;
 192 ASN1_OCTET_STRING *ikeyid = NULL;
 193 X509_NAME *isname = NULL;
 194 STACK * gens = NULL;
 195 GENERAL_NAME *gen = NULL;
 196 ASN1_INTEGER *serial = NULL;
 197 X509_EXTENSION *ext;
 198 X509 *cert;
 199 AUTHORITY_KEYID *akeyid;
 200 for(i = 0; i < sk_num(values); i++) {
 201         cnf = (CONF_VALUE *)sk_value(values, i);
 202         if(!strcmp(cnf->name, "keyid")) {
 203                 keyid = 1;
 204                 if(cnf->value && !strcmp(cnf->value, "always")) keyid = 2;
 205         } else if(!strcmp(cnf->name, "issuer")) {
 206                 issuer = 1;
 207                 if(cnf->value && !strcmp(cnf->value, "always")) issuer = 2;
 208         } else {
 209                 X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNKNOWN_OPTION);
 210                 ERR_add_error_data(2, "name=", cnf->name);
 211                 return NULL;
 212         }
 213 }
 214
 215
 216
 217 if(!ctx || !ctx->issuer_cert) {
 218         if(ctx && (ctx->flags==CTX_TEST)) return AUTHORITY_KEYID_new();
 219         X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE);
 220         return NULL;
 221 }
 222
 223 cert = ctx->issuer_cert;
 224
 225 if(keyid) {
 226         i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
 227         if((i >= 0)  && (ext = X509_get_ext(cert, i)))
 228                         ikeyid = (ASN1_OCTET_STRING *) X509V3_EXT_d2i(ext);
 229         if(keyid==2 && !ikeyid) {
 230                 X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
 231                 return NULL;
 232         }
 233 }
 234
 235 if((issuer && !ikeyid) || (issuer == 2)) {
 236         isname = X509_NAME_dup(X509_get_issuer_name(cert));
 237         serial = ASN1_INTEGER_dup(X509_get_serialNumber(cert));
 238         if(!isname || !serial) {
 239                 X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
 240                 goto err;
 241         }
 242 }
 243
 244 if(!(akeyid = AUTHORITY_KEYID_new())) goto err;
 245
 246 if(isname) {
 247         if(!(gens = sk_new(NULL)) || !(gen = GENERAL_NAME_new())
 248                 || !sk_push(gens, (char *)gen)) {
 249                 X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE);
 250                 goto err;
 251         }
 252         gen->type = GEN_DIRNAME;
 253         gen->d.dirn = isname;
 254 }
 255
 256 akeyid->issuer = gens;
 257 akeyid->serial = serial;
 258 akeyid->keyid = ikeyid;
 259
 260 return akeyid;
 261
 262 err:
 263 X509_NAME_free(isname);
 264 ASN1_INTEGER_free(serial);
 265 ASN1_OCTET_STRING_free(ikeyid);
 266 return NULL;
 267
 268 }
 269