Line data Source code
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 :
63 0 : size_t BUF_strnlen(const char *str, size_t maxlen)
64 : {
65 : const char *p;
66 :
67 19980 : for (p = str; maxlen-- != 0 && *p != '\0'; ++p) ;
68 :
69 1110 : return p - str;
70 : }
71 :
72 743 : char *BUF_strdup(const char *str)
73 : {
74 743 : if (str == NULL)
75 : return (NULL);
76 743 : return BUF_strndup(str, strlen(str));
77 : }
78 :
79 1110 : char *BUF_strndup(const char *str, size_t siz)
80 : {
81 : char *ret;
82 :
83 1110 : if (str == NULL)
84 : return (NULL);
85 :
86 : siz = BUF_strnlen(str, siz);
87 :
88 1110 : ret = OPENSSL_malloc(siz + 1);
89 1110 : if (ret == NULL) {
90 0 : BUFerr(BUF_F_BUF_STRNDUP, ERR_R_MALLOC_FAILURE);
91 0 : return (NULL);
92 : }
93 1110 : BUF_strlcpy(ret, str, siz + 1);
94 1110 : return (ret);
95 : }
96 :
97 373 : void *BUF_memdup(const void *data, size_t siz)
98 : {
99 : void *ret;
100 :
101 373 : if (data == NULL)
102 : return (NULL);
103 :
104 373 : ret = OPENSSL_malloc(siz);
105 373 : if (ret == NULL) {
106 0 : BUFerr(BUF_F_BUF_MEMDUP, ERR_R_MALLOC_FAILURE);
107 0 : return (NULL);
108 : }
109 373 : return memcpy(ret, data, siz);
110 : }
111 :
112 2854 : size_t BUF_strlcpy(char *dst, const char *src, size_t size)
113 : {
114 : size_t l = 0;
115 45490 : for (; size > 1 && *src; size--) {
116 42636 : *dst++ = *src++;
117 42636 : l++;
118 : }
119 2854 : if (size)
120 2854 : *dst = '\0';
121 2854 : return l + strlen(src);
122 : }
123 :
124 1744 : size_t BUF_strlcat(char *dst, const char *src, size_t size)
125 : {
126 : size_t l = 0;
127 11336 : for (; size > 0 && *dst; size--, dst++)
128 9592 : l++;
129 1744 : return l + BUF_strlcpy(dst, src, size);
130 : }
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