-/* crypto/asn1/a_bitstr.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.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * 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.]
+ * Licensed under the OpenSSL license (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 <limits.h>
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/asn1.h>
#include "asn1_locl.h"
unsigned char *p, *d;
if (a == NULL)
- return (0);
+ return 0;
len = a->length;
ret = 1 + len;
if (pp == NULL)
- return (ret);
+ return ret;
p = *pp;
*(p++) = (unsigned char)bits;
d = a->data;
- memcpy(p, d, len);
- p += len;
- if (len > 0)
+ if (len > 0) {
+ memcpy(p, d, len);
+ p += len;
p[-1] &= (0xff << bits);
+ }
*pp = p;
- return (ret);
+ return ret;
}
ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
goto err;
}
+ if (len > INT_MAX) {
+ i = ASN1_R_STRING_TOO_LONG;
+ goto err;
+ }
+
if ((a == NULL) || ((*a) == NULL)) {
if ((ret = ASN1_BIT_STRING_new()) == NULL)
- return (NULL);
+ return NULL;
} else
ret = (*a);
ret->flags |= (ASN1_STRING_FLAG_BITS_LEFT | i); /* set */
if (len-- > 1) { /* using one because of the bits left byte */
- s = (unsigned char *)OPENSSL_malloc((int)len);
+ s = OPENSSL_malloc((int)len);
if (s == NULL) {
i = ERR_R_MALLOC_FAILURE;
goto err;
s = NULL;
ret->length = (int)len;
- if (ret->data != NULL)
- OPENSSL_free(ret->data);
+ OPENSSL_free(ret->data);
ret->data = s;
ret->type = V_ASN1_BIT_STRING;
if (a != NULL)
(*a) = ret;
*pp = p;
- return (ret);
+ return ret;
err:
ASN1err(ASN1_F_C2I_ASN1_BIT_STRING, i);
if ((a == NULL) || (*a != ret))
ASN1_BIT_STRING_free(ret);
- return (NULL);
+ return NULL;
}
/*
- * These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>
+ * These next 2 functions from Goetz Babin-Ebell.
*/
int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value)
{
if ((a->length < (w + 1)) || (a->data == NULL)) {
if (!value)
- return (1); /* Don't need to set */
- if (a->data == NULL)
- c = (unsigned char *)OPENSSL_malloc(w + 1);
- else
- c = (unsigned char *)OPENSSL_realloc_clean(a->data,
- a->length, w + 1);
+ return 1; /* Don't need to set */
+ c = OPENSSL_clear_realloc(a->data, a->length, w + 1);
if (c == NULL) {
ASN1err(ASN1_F_ASN1_BIT_STRING_SET_BIT, ERR_R_MALLOC_FAILURE);
return 0;
a->data[w] = ((a->data[w]) & iv) | v;
while ((a->length > 0) && (a->data[a->length - 1] == 0))
a->length--;
- return (1);
+ return 1;
}
int ASN1_BIT_STRING_get_bit(const ASN1_BIT_STRING *a, int n)
w = n / 8;
v = 1 << (7 - (n & 0x07));
if ((a == NULL) || (a->length < (w + 1)) || (a->data == NULL))
- return (0);
+ return 0;
return ((a->data[w] & v) != 0);
}