/*
 * 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 "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include "internal/x509_int.h"

/*
 * X509_CERT_AUX routines. These are used to encode additional user
 * modifiable data about a certificate. This data is appended to the X509
 * encoding when the *_X509_AUX routines are used. This means that the
 * "traditional" X509 routines will simply ignore the extra data.
 */

static X509_CERT_AUX *aux_get(X509 *x);

ASN1_SEQUENCE(X509_CERT_AUX) = {
        ASN1_SEQUENCE_OF_OPT(X509_CERT_AUX, trust, ASN1_OBJECT),
        ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, reject, ASN1_OBJECT, 0),
        ASN1_OPT(X509_CERT_AUX, alias, ASN1_UTF8STRING),
        ASN1_OPT(X509_CERT_AUX, keyid, ASN1_OCTET_STRING),
        ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, other, X509_ALGOR, 1)
} ASN1_SEQUENCE_END(X509_CERT_AUX)

IMPLEMENT_ASN1_FUNCTIONS(X509_CERT_AUX)

int X509_trusted(const X509 *x)
{
    return x->aux ? 1 : 0;
}

static X509_CERT_AUX *aux_get(X509 *x)
{
    if (x == NULL)
        return NULL;
    if (x->aux == NULL && (x->aux = X509_CERT_AUX_new()) == NULL)
        return NULL;
    return x->aux;
}

int X509_alias_set1(X509 *x, unsigned char *name, int len)
{
    X509_CERT_AUX *aux;
    if (!name) {
        if (!x || !x->aux || !x->aux->alias)
            return 1;
        ASN1_UTF8STRING_free(x->aux->alias);
        x->aux->alias = NULL;
        return 1;
    }
    if ((aux = aux_get(x)) == NULL)
        return 0;
    if (aux->alias == NULL && (aux->alias = ASN1_UTF8STRING_new()) == NULL)
        return 0;
    return ASN1_STRING_set(aux->alias, name, len);
}

int X509_keyid_set1(X509 *x, unsigned char *id, int len)
{
    X509_CERT_AUX *aux;
    if (!id) {
        if (!x || !x->aux || !x->aux->keyid)
            return 1;
        ASN1_OCTET_STRING_free(x->aux->keyid);
        x->aux->keyid = NULL;
        return 1;
    }
    if ((aux = aux_get(x)) == NULL)
        return 0;
    if (aux->keyid ==NULL
        && (aux->keyid = ASN1_OCTET_STRING_new()) == NULL)
        return 0;
    return ASN1_STRING_set(aux->keyid, id, len);
}

unsigned char *X509_alias_get0(X509 *x, int *len)
{
    if (!x->aux || !x->aux->alias)
        return NULL;
    if (len)
        *len = x->aux->alias->length;
    return x->aux->alias->data;
}

unsigned char *X509_keyid_get0(X509 *x, int *len)
{
    if (!x->aux || !x->aux->keyid)
        return NULL;
    if (len)
        *len = x->aux->keyid->length;
    return x->aux->keyid->data;
}

int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj)
{
    X509_CERT_AUX *aux;
    ASN1_OBJECT *objtmp = NULL;
    if (obj) {
        objtmp = OBJ_dup(obj);
        if (!objtmp)
            return 0;
    }
    if ((aux = aux_get(x)) == NULL)
        goto err;
    if (aux->trust == NULL
        && (aux->trust = sk_ASN1_OBJECT_new_null()) == NULL)
        goto err;
    if (!objtmp || sk_ASN1_OBJECT_push(aux->trust, objtmp))
        return 1;
 err:
    ASN1_OBJECT_free(objtmp);
    return 0;
}

int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj)
{
    X509_CERT_AUX *aux;
    ASN1_OBJECT *objtmp;
    if ((objtmp = OBJ_dup(obj)) == NULL)
        return 0;
    if ((aux = aux_get(x)) == NULL)
        goto err;
    if (aux->reject == NULL
        && (aux->reject = sk_ASN1_OBJECT_new_null()) == NULL)
        goto err;
    return sk_ASN1_OBJECT_push(aux->reject, objtmp);
 err:
    ASN1_OBJECT_free(objtmp);
    return 0;
}

void X509_trust_clear(X509 *x)
{
    if (x->aux) {
        sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free);
        x->aux->trust = NULL;
    }
}

void X509_reject_clear(X509 *x)
{
    if (x->aux) {
        sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free);
        x->aux->reject = NULL;
    }
}

STACK_OF(ASN1_OBJECT) *X509_get0_trust_objects(X509 *x)
{
    if (x->aux != NULL)
        return x->aux->trust;
    return NULL;
}

STACK_OF(ASN1_OBJECT) *X509_get0_reject_objects(X509 *x)
{
    if (x->aux != NULL)
        return x->aux->reject;
    return NULL;
}