buf_str.c revision 296465 
1/* crypto/buffer/buf_str.c */
2/* ====================================================================
3 * Copyright (c) 2007 The OpenSSL Project.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in
14 *    the documentation and/or other materials provided with the
15 *    distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 *    software must display the following acknowledgment:
19 *    "This product includes software developed by the OpenSSL Project
20 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 *    endorse or promote products derived from this software without
24 *    prior written permission. For written permission, please contact
25 *    licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 *    nor may "OpenSSL" appear in their names without prior written
29 *    permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 *    acknowledgment:
33 *    "This product includes software developed by the OpenSSL Project
34 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com).  This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include <stdio.h>
57#include "cryptlib.h"
58#include <openssl/buffer.h>
59
60char *BUF_strdup(const char *str)
61{
62    if (str == NULL)
63        return (NULL);
64    return BUF_strndup(str, strlen(str));
65}
66
67char *BUF_strndup(const char *str, size_t siz)
68{
69    char *ret;
70
71    if (str == NULL)
72        return (NULL);
73
74    ret = OPENSSL_malloc(siz + 1);
75    if (ret == NULL) {
76        BUFerr(BUF_F_BUF_STRNDUP, ERR_R_MALLOC_FAILURE);
77        return (NULL);
78    }
79    BUF_strlcpy(ret, str, siz + 1);
80    return (ret);
81}
82
83void *BUF_memdup(const void *data, size_t siz)
84{
85    void *ret;
86
87    if (data == NULL)
88        return (NULL);
89
90    ret = OPENSSL_malloc(siz);
91    if (ret == NULL) {
92        BUFerr(BUF_F_BUF_MEMDUP, ERR_R_MALLOC_FAILURE);
93        return (NULL);
94    }
95    return memcpy(ret, data, siz);
96}
97
98size_t BUF_strlcpy(char *dst, const char *src, size_t size)
99{
100    size_t l = 0;
101    for (; size > 1 && *src; size--) {
102        *dst++ = *src++;
103        l++;
104    }
105    if (size)
106        *dst = '\0';
107    return l + strlen(src);
108}
109
110size_t BUF_strlcat(char *dst, const char *src, size_t size)
111{
112    size_t l = 0;
113    for (; size > 0 && *dst; size--, dst++)
114        l++;
115    return l + BUF_strlcpy(dst, src, size);
116}
117