openssl/crypto/x509v3/v3_akey.c

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/* v3_akey.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
* project 1999.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/asn1.h>
#include <openssl/asn1_mac.h>
#include <openssl/x509v3.h>
static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist);
static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
X509V3_EXT_METHOD v3_akey_id = {
NID_authority_key_identifier, X509V3_EXT_MULTILINE,
(X509V3_EXT_NEW)AUTHORITY_KEYID_new,
(X509V3_EXT_FREE)AUTHORITY_KEYID_free,
(X509V3_EXT_D2I)d2i_AUTHORITY_KEYID,
(X509V3_EXT_I2D)i2d_AUTHORITY_KEYID,
NULL, NULL,
(X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,
(X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
NULL,NULL,
NULL
};
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int i2d_AUTHORITY_KEYID(AUTHORITY_KEYID *a, unsigned char **pp)
{
M_ASN1_I2D_vars(a);
M_ASN1_I2D_len_IMP_opt (a->keyid, i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_len_IMP_opt (a->issuer, i2d_GENERAL_NAMES);
M_ASN1_I2D_len_IMP_opt (a->serial, i2d_ASN1_INTEGER);
M_ASN1_I2D_seq_total();
M_ASN1_I2D_put_IMP_opt (a->keyid, i2d_ASN1_OCTET_STRING, 0);
M_ASN1_I2D_put_IMP_opt (a->issuer, i2d_GENERAL_NAMES, 1);
M_ASN1_I2D_put_IMP_opt (a->serial, i2d_ASN1_INTEGER, 2);
M_ASN1_I2D_finish();
}
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AUTHORITY_KEYID *AUTHORITY_KEYID_new(void)
{
AUTHORITY_KEYID *ret=NULL;
ASN1_CTX c;
M_ASN1_New_Malloc(ret, AUTHORITY_KEYID);
ret->keyid = NULL;
ret->issuer = NULL;
ret->serial = NULL;
return (ret);
M_ASN1_New_Error(ASN1_F_AUTHORITY_KEYID_NEW);
}
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AUTHORITY_KEYID *d2i_AUTHORITY_KEYID(AUTHORITY_KEYID **a, unsigned char **pp,
long length)
{
M_ASN1_D2I_vars(a,AUTHORITY_KEYID *,AUTHORITY_KEYID_new);
M_ASN1_D2I_Init();
M_ASN1_D2I_start_sequence();
M_ASN1_D2I_get_IMP_opt (ret->keyid, d2i_ASN1_OCTET_STRING, 0,
V_ASN1_OCTET_STRING);
M_ASN1_D2I_get_IMP_opt (ret->issuer, d2i_GENERAL_NAMES, 1,
V_ASN1_SEQUENCE);
M_ASN1_D2I_get_IMP_opt (ret->serial, d2i_ASN1_INTEGER, 2,
V_ASN1_INTEGER);
M_ASN1_D2I_Finish(a, AUTHORITY_KEYID_free, ASN1_F_D2I_AUTHORITY_KEYID);
}
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void AUTHORITY_KEYID_free(AUTHORITY_KEYID *a)
{
if (a == NULL) return;
M_ASN1_OCTET_STRING_free(a->keyid);
sk_GENERAL_NAME_pop_free(a->issuer, GENERAL_NAME_free);
M_ASN1_INTEGER_free (a->serial);
Free ((char *)a);
}
static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist)
{
char *tmp;
if(akeyid->keyid) {
tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
X509V3_add_value("keyid", tmp, &extlist);
Free(tmp);
}
if(akeyid->issuer)
extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
if(akeyid->serial) {
tmp = hex_to_string(akeyid->serial->data,
akeyid->serial->length);
X509V3_add_value("serial", tmp, &extlist);
Free(tmp);
}
return extlist;
}
/* Currently two options:
* keyid: use the issuers subject keyid, the value 'always' means its is
* an error if the issuer certificate doesn't have a key id.
* issuer: use the issuers cert issuer and serial number. The default is
* to only use this if keyid is not present. With the option 'always'
* this is always included.
*/
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static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values)
{
char keyid=0, issuer=0;
int i;
CONF_VALUE *cnf;
ASN1_OCTET_STRING *ikeyid = NULL;
X509_NAME *isname = NULL;
STACK_OF(GENERAL_NAME) * gens = NULL;
GENERAL_NAME *gen = NULL;
ASN1_INTEGER *serial = NULL;
X509_EXTENSION *ext;
X509 *cert;
AUTHORITY_KEYID *akeyid;
for(i = 0; i < sk_CONF_VALUE_num(values); i++) {
cnf = sk_CONF_VALUE_value(values, i);
if(!strcmp(cnf->name, "keyid")) {
keyid = 1;
if(cnf->value && !strcmp(cnf->value, "always")) keyid = 2;
} else if(!strcmp(cnf->name, "issuer")) {
issuer = 1;
if(cnf->value && !strcmp(cnf->value, "always")) issuer = 2;
} else {
X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNKNOWN_OPTION);
ERR_add_error_data(2, "name=", cnf->name);
return NULL;
}
}
if(!ctx || !ctx->issuer_cert) {
if(ctx && (ctx->flags==CTX_TEST)) return AUTHORITY_KEYID_new();
X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE);
return NULL;
}
cert = ctx->issuer_cert;
if(keyid) {
i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
if((i >= 0) && (ext = X509_get_ext(cert, i)))
ikeyid = X509V3_EXT_d2i(ext);
if(keyid==2 && !ikeyid) {
X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
return NULL;
}
}
if((issuer && !ikeyid) || (issuer == 2)) {
isname = X509_NAME_dup(X509_get_issuer_name(cert));
serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
if(!isname || !serial) {
X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
goto err;
}
}
if(!(akeyid = AUTHORITY_KEYID_new())) goto err;
if(isname) {
if(!(gens = sk_GENERAL_NAME_new(NULL)) || !(gen = GENERAL_NAME_new())
|| !sk_GENERAL_NAME_push(gens, gen)) {
X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE);
goto err;
}
gen->type = GEN_DIRNAME;
gen->d.dirn = isname;
}
akeyid->issuer = gens;
akeyid->serial = serial;
akeyid->keyid = ikeyid;
return akeyid;
err:
X509_NAME_free(isname);
M_ASN1_INTEGER_free(serial);
M_ASN1_OCTET_STRING_free(ikeyid);
return NULL;
}