238 lines
7 KiB
C
238 lines
7 KiB
C
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/* $OpenBSD: x509_akey.c,v 1.1 2020/06/04 15:19:31 jsing Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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#include <openssl/conf.h>
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#include <openssl/err.h>
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#include <openssl/x509v3.h>
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static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
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AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist);
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static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
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const X509V3_EXT_METHOD v3_akey_id = {
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.ext_nid = NID_authority_key_identifier,
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.ext_flags = X509V3_EXT_MULTILINE,
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.it = &AUTHORITY_KEYID_it,
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.ext_new = NULL,
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.ext_free = NULL,
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.d2i = NULL,
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.i2d = NULL,
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.i2s = NULL,
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.s2i = NULL,
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.i2v = (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,
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.v2i = (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
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.i2r = NULL,
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.r2i = NULL,
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.usr_data = NULL,
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};
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static STACK_OF(CONF_VALUE) *
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i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid,
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STACK_OF(CONF_VALUE) *extlist)
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{
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STACK_OF(CONF_VALUE) *free_extlist = NULL;
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char *tmpstr = NULL;
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if (extlist == NULL) {
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if ((free_extlist = extlist = sk_CONF_VALUE_new_null()) == NULL)
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return NULL;
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}
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if (akeyid->keyid != NULL) {
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if ((tmpstr = hex_to_string(akeyid->keyid->data,
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akeyid->keyid->length)) == NULL)
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goto err;
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if (!X509V3_add_value("keyid", tmpstr, &extlist))
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goto err;
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free(tmpstr);
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tmpstr = NULL;
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}
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if (akeyid->issuer != NULL) {
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if ((extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer,
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extlist)) == NULL)
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goto err;
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}
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if (akeyid->serial != NULL) {
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if ((tmpstr = hex_to_string(akeyid->serial->data,
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akeyid->serial->length)) == NULL)
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goto err;
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if (!X509V3_add_value("serial", tmpstr, &extlist))
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goto err;
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free(tmpstr);
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tmpstr = NULL;
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}
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if (sk_CONF_VALUE_num(extlist) <= 0)
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goto err;
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return extlist;
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err:
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free(tmpstr);
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sk_CONF_VALUE_pop_free(free_extlist, X509V3_conf_free);
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return NULL;
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}
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/*
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* Currently two options:
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* keyid: use the issuers subject keyid, the value 'always' means its is
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* an error if the issuer certificate doesn't have a key id.
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* issuer: use the issuers cert issuer and serial number. The default is
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* to only use this if keyid is not present. With the option 'always'
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* this is always included.
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*/
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static AUTHORITY_KEYID *
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v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *values)
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{
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char keyid = 0, issuer = 0;
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int i;
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CONF_VALUE *cnf;
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ASN1_OCTET_STRING *ikeyid = NULL;
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X509_NAME *isname = NULL;
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STACK_OF(GENERAL_NAME) *gens = NULL;
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GENERAL_NAME *gen = NULL;
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ASN1_INTEGER *serial = NULL;
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X509_EXTENSION *ext;
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X509 *cert;
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AUTHORITY_KEYID *akeyid = NULL;
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for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
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cnf = sk_CONF_VALUE_value(values, i);
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if (!strcmp(cnf->name, "keyid")) {
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keyid = 1;
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if (cnf->value && !strcmp(cnf->value, "always"))
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keyid = 2;
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} else if (!strcmp(cnf->name, "issuer")) {
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issuer = 1;
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if (cnf->value && !strcmp(cnf->value, "always"))
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issuer = 2;
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} else {
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X509V3error(X509V3_R_UNKNOWN_OPTION);
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ERR_asprintf_error_data("name=%s", cnf->name);
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return NULL;
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}
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}
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if (!ctx || !ctx->issuer_cert) {
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if (ctx && (ctx->flags == CTX_TEST))
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return AUTHORITY_KEYID_new();
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X509V3error(X509V3_R_NO_ISSUER_CERTIFICATE);
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return NULL;
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}
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cert = ctx->issuer_cert;
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if (keyid) {
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i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
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if ((i >= 0) && (ext = X509_get_ext(cert, i)))
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ikeyid = X509V3_EXT_d2i(ext);
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if (keyid == 2 && !ikeyid) {
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X509V3error(X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
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return NULL;
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}
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}
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if ((issuer && !ikeyid) || (issuer == 2)) {
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isname = X509_NAME_dup(X509_get_issuer_name(cert));
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serial = ASN1_INTEGER_dup(X509_get_serialNumber(cert));
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if (!isname || !serial) {
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X509V3error(X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
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goto err;
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}
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}
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if (!(akeyid = AUTHORITY_KEYID_new()))
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goto err;
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if (isname) {
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if (!(gens = sk_GENERAL_NAME_new_null()) ||
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!(gen = GENERAL_NAME_new()) ||
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!sk_GENERAL_NAME_push(gens, gen)) {
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X509V3error(ERR_R_MALLOC_FAILURE);
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goto err;
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}
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gen->type = GEN_DIRNAME;
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gen->d.dirn = isname;
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}
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akeyid->issuer = gens;
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akeyid->serial = serial;
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akeyid->keyid = ikeyid;
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return akeyid;
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err:
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AUTHORITY_KEYID_free(akeyid);
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GENERAL_NAME_free(gen);
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sk_GENERAL_NAME_free(gens);
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X509_NAME_free(isname);
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ASN1_INTEGER_free(serial);
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ASN1_OCTET_STRING_free(ikeyid);
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return NULL;
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}
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