/*

 * Copyright 1999-2026 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <stdio.h>

#include "internal/cryptlib.h"

#include <openssl/evp.h>

#include <openssl/asn1t.h>

#include <openssl/x509.h>

#include "crypto/x509.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, const unsigned char *name, int len)

{

    X509_CERT_AUX *aux;

    size_t len_s;

    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 (len < -1)

        return 0;

    if (len == -1)

        len_s = strlen((const char *)name);

    else

        len_s = len;

    if (aux->alias == NULL && (aux->alias = ASN1_UTF8STRING_new()) == NULL)

        return 0;

    return ASN1_STRING_set_data(aux->alias, name, len_s);

}

int X509_keyid_set1(X509 *x, const unsigned char *id, int len)

{

    X509_CERT_AUX *aux;

    size_t len_s;

    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 (len < -1)

        return 0;

    if (len == -1)

        len_s = strlen((const char *)id);

    else

        len_s = len;

    if (aux->keyid == NULL

        && (aux->keyid = ASN1_OCTET_STRING_new()) == NULL)

        return 0;

    return ASN1_STRING_set_data(aux->keyid, id, len_s);

}

const unsigned char *X509_alias_get0(const X509 *x, int *len)

{

    if (!x->aux || !x->aux->alias)

        return NULL;

    if (len)

        *len = x->aux->alias->length;

    return x->aux->alias->data;

}

const unsigned char *X509_keyid_get0(const 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, const 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, const ASN1_OBJECT *obj)

{

    X509_CERT_AUX *aux;

    ASN1_OBJECT *objtmp;

    int res = 0;

    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;

    if (sk_ASN1_OBJECT_push(aux->reject, objtmp) > 0)

        res = 1;

err:

    if (!res)

        ASN1_OBJECT_free(objtmp);

    return res;

}

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;

    }

}

const STACK_OF(ASN1_OBJECT) *X509_get0_trust_objects(const X509 *x)

{

    if (x->aux != NULL)

        return x->aux->trust;

    return NULL;

}

const STACK_OF(ASN1_OBJECT) *X509_get0_reject_objects(const X509 *x)

{

    if (x->aux != NULL)

        return x->aux->reject;

    return NULL;

}