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Revision ce052c8437fb97cbc57f034fa94b5bcd749dbf52 authored by Matt Caswell on 03 December 2015, 14:56:22 UTC, committed by Matt Caswell on 03 December 2015, 14:56:22 UTC
Prepare for 1.0.0t release
Reviewed-by: Richard Levitte <levitte@openssl.org>
1 parent a402b2b
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  • 9a1b74b
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  • crypto
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  • x509v3
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  • v3_akey.c
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v3_akey.c
/* v3_akey.c */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) 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/asn1t.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);

const X509V3_EXT_METHOD v3_akey_id = {
    NID_authority_key_identifier,
    X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
    0, 0, 0, 0,
    0, 0,
    (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
    (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
    0, 0,
    NULL
};

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);
        OPENSSL_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);
        OPENSSL_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.
 */

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;
    GENERAL_NAMES *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;
}
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