release/src/router/openssl/crypto/x509v3/v3_akey.c

   1 /* v3_akey.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 1999.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include "cryptlib.h"
  62 #include <openssl/conf.h>
  63 #include <openssl/asn1.h>
  64 #include <openssl/asn1t.h>
  65 #include <openssl/x509v3.h>
  66
  67 static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
  68                                                  AUTHORITY_KEYID *akeyid,
  69                                                  STACK_OF(CONF_VALUE)
  70                                                  *extlist);
  71 static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
  72                                             X509V3_CTX *ctx,
  73                                             STACK_OF(CONF_VALUE) *values);
  74
  75 const X509V3_EXT_METHOD v3_akey_id = {
  76     NID_authority_key_identifier,
  77     X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
  78     0, 0, 0, 0,
  79     0, 0,
  80     (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
  81     (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
  82     0, 0,
  83     NULL
  84 };
  85
  86 static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
  87                                                  AUTHORITY_KEYID *akeyid,
  88                                                  STACK_OF(CONF_VALUE)
  89                                                  *extlist)
  90 {
  91     char *tmp;
  92     if (akeyid->keyid) {
  93         tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
  94         X509V3_add_value("keyid", tmp, &extlist);
  95         OPENSSL_free(tmp);
  96     }
  97     if (akeyid->issuer)
  98         extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
  99     if (akeyid->serial) {
 100         tmp = hex_to_string(akeyid->serial->data, akeyid->serial->length);
 101         X509V3_add_value("serial", tmp, &extlist);
 102         OPENSSL_free(tmp);
 103     }
 104     return extlist;
 105 }
 106
 107 /*-
 108  * Currently two options:
 109  * keyid: use the issuers subject keyid, the value 'always' means its is
 110  * an error if the issuer certificate doesn't have a key id.
 111  * issuer: use the issuers cert issuer and serial number. The default is
 112  * to only use this if keyid is not present. With the option 'always'
 113  * this is always included.
 114  */
 115
 116 static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
 117                                             X509V3_CTX *ctx,
 118                                             STACK_OF(CONF_VALUE) *values)
 119 {
 120     char keyid = 0, issuer = 0;
 121     int i;
 122     CONF_VALUE *cnf;
 123     ASN1_OCTET_STRING *ikeyid = NULL;
 124     X509_NAME *isname = NULL;
 125     GENERAL_NAMES *gens = NULL;
 126     GENERAL_NAME *gen = NULL;
 127     ASN1_INTEGER *serial = NULL;
 128     X509_EXTENSION *ext;
 129     X509 *cert;
 130     AUTHORITY_KEYID *akeyid;
 131
 132     for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
 133         cnf = sk_CONF_VALUE_value(values, i);
 134         if (!strcmp(cnf->name, "keyid")) {
 135             keyid = 1;
 136             if (cnf->value && !strcmp(cnf->value, "always"))
 137                 keyid = 2;
 138         } else if (!strcmp(cnf->name, "issuer")) {
 139             issuer = 1;
 140             if (cnf->value && !strcmp(cnf->value, "always"))
 141                 issuer = 2;
 142         } else {
 143             X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNKNOWN_OPTION);
 144             ERR_add_error_data(2, "name=", cnf->name);
 145             return NULL;
 146         }
 147     }
 148
 149     if (!ctx || !ctx->issuer_cert) {
 150         if (ctx && (ctx->flags == CTX_TEST))
 151             return AUTHORITY_KEYID_new();
 152         X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
 153                   X509V3_R_NO_ISSUER_CERTIFICATE);
 154         return NULL;
 155     }
 156
 157     cert = ctx->issuer_cert;
 158
 159     if (keyid) {
 160         i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
 161         if ((i >= 0) && (ext = X509_get_ext(cert, i)))
 162             ikeyid = X509V3_EXT_d2i(ext);
 163         if (keyid == 2 && !ikeyid) {
 164             X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
 165                       X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
 166             return NULL;
 167         }
 168     }
 169
 170     if ((issuer && !ikeyid) || (issuer == 2)) {
 171         isname = X509_NAME_dup(X509_get_issuer_name(cert));
 172         serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
 173         if (!isname || !serial) {
 174             X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
 175                       X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
 176             goto err;
 177         }
 178     }
 179
 180     if (!(akeyid = AUTHORITY_KEYID_new()))
 181         goto err;
 182
 183     if (isname) {
 184         if (!(gens = sk_GENERAL_NAME_new_null())
 185             || !(gen = GENERAL_NAME_new())
 186             || !sk_GENERAL_NAME_push(gens, gen)) {
 187             X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE);
 188             goto err;
 189         }
 190         gen->type = GEN_DIRNAME;
 191         gen->d.dirn = isname;
 192     }
 193
 194     akeyid->issuer = gens;
 195     akeyid->serial = serial;
 196     akeyid->keyid = ikeyid;
 197
 198     return akeyid;
 199
 200  err:
 201     X509_NAME_free(isname);
 202     M_ASN1_INTEGER_free(serial);
 203     M_ASN1_OCTET_STRING_free(ikeyid);
 204     return NULL;
 205 }