1/* crypto/buffer/buffer.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to.  The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 *    notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 *    notice, this list of conditions and the following disclaimer in the
30 *    documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 *    must display the following acknowledgement:
33 *    "This product includes cryptographic software written by
34 *     Eric Young (eay@cryptsoft.com)"
35 *    The word 'cryptographic' can be left out if the rouines from the library
36 *    being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 *    the apps directory (application code) you must include an acknowledgement:
39 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed.  i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/buffer.h>
62
63char *BUF_strdup(const char *str)
64	{
65	if (str == NULL) return(NULL);
66	return BUF_strndup(str, strlen(str));
67	}
68
69char *BUF_strndup(const char *str, size_t siz)
70	{
71	char *ret;
72
73	if (str == NULL) return(NULL);
74
75	ret=OPENSSL_malloc(siz+1);
76	if (ret == NULL)
77		{
78		BUFerr(BUF_F_BUF_STRNDUP,ERR_R_MALLOC_FAILURE);
79		return(NULL);
80		}
81	BUF_strlcpy(ret,str,siz+1);
82	return(ret);
83	}
84
85void *BUF_memdup(const void *data, size_t siz)
86	{
87	void *ret;
88
89	if (data == NULL) return(NULL);
90
91	ret=OPENSSL_malloc(siz);
92	if (ret == NULL)
93		{
94		BUFerr(BUF_F_BUF_MEMDUP,ERR_R_MALLOC_FAILURE);
95		return(NULL);
96		}
97	return memcpy(ret, data, siz);
98	}
99
100size_t BUF_strlcpy(char *dst, const char *src, size_t size)
101	{
102	size_t l = 0;
103	for(; size > 1 && *src; size--)
104		{
105		*dst++ = *src++;
106		l++;
107		}
108	if (size)
109		*dst = '\0';
110	return l + strlen(src);
111	}
112
113size_t BUF_strlcat(char *dst, const char *src, size_t size)
114	{
115	size_t l = 0;
116	for(; size > 0 && *dst; size--, dst++)
117		l++;
118	return l + BUF_strlcpy(dst, src, size);
119	}
120