Use safer sizeof variant in malloc

[thirdparty/openssl.git] / crypto / asn1 / x_pkey.c

/* crypto/asn1/x_pkey.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>

X509_PKEY *X509_PKEY_new(void)
{
    X509_PKEY *ret = NULL;

    ret = OPENSSL_malloc(sizeof(*ret));
    if (!ret)
        goto err;
    memset(ret, 0, sizeof(*ret));

    ret->version = 0;
    ret->enc_algor = X509_ALGOR_new();
    ret->enc_pkey = ASN1_OCTET_STRING_new();
    if (!ret->enc_algor || !ret->enc_pkey)
        goto err;
    ret->dec_pkey = NULL;
    ret->key_length = 0;
    ret->key_data = NULL;
    ret->key_free = 0;
    ret->cipher.cipher = NULL;
    memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);
    ret->references = 1;
    return ret;
err:
    X509_PKEY_free(ret);
    ASN1err(ASN1_F_X509_PKEY_NEW, ERR_R_MALLOC_FAILURE);
    return NULL;
}

void X509_PKEY_free(X509_PKEY *x)
{
    int i;

    if (x == NULL)
        return;

    i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_X509_PKEY);
#ifdef REF_PRINT
    REF_PRINT("X509_PKEY", x);
#endif
    if (i > 0)
        return;
#ifdef REF_CHECK
    if (i < 0) {
        fprintf(stderr, "X509_PKEY_free, bad reference count\n");
        abort();
    }
#endif

    X509_ALGOR_free(x->enc_algor);
    ASN1_OCTET_STRING_free(x->enc_pkey);
    EVP_PKEY_free(x->dec_pkey);
    if (x->key_free)
        OPENSSL_free(x->key_data);
    OPENSSL_free(x);
}