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d51519eb DSH |
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. | |
ae5c8664 | 8 | * |
d51519eb DSH |
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). | |
ae5c8664 | 15 | * |
d51519eb DSH |
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. | |
ae5c8664 | 22 | * |
d51519eb DSH |
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 :-). | |
ae5c8664 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d51519eb DSH |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
ae5c8664 | 40 | * |
d51519eb DSH |
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. | |
ae5c8664 | 52 | * |
d51519eb DSH |
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 | ||
ed693e43 | 63 | size_t BUF_strnlen(const char *str, size_t maxlen) |
ae5c8664 MC |
64 | { |
65 | const char *p; | |
ed693e43 | 66 | |
ae5c8664 | 67 | for (p = str; maxlen-- != 0 && *p != '\0'; ++p) ; |
ed693e43 | 68 | |
ae5c8664 MC |
69 | return p - str; |
70 | } | |
ed693e43 | 71 | |
d51519eb | 72 | char *BUF_strdup(const char *str) |
ae5c8664 MC |
73 | { |
74 | if (str == NULL) | |
75 | return (NULL); | |
76 | return BUF_strndup(str, strlen(str)); | |
77 | } | |
d51519eb DSH |
78 | |
79 | char *BUF_strndup(const char *str, size_t siz) | |
ae5c8664 MC |
80 | { |
81 | char *ret; | |
d51519eb | 82 | |
ae5c8664 MC |
83 | if (str == NULL) |
84 | return (NULL); | |
d51519eb | 85 | |
ae5c8664 | 86 | siz = BUF_strnlen(str, siz); |
4ceb430a | 87 | |
ae5c8664 MC |
88 | ret = OPENSSL_malloc(siz + 1); |
89 | if (ret == NULL) { | |
90 | BUFerr(BUF_F_BUF_STRNDUP, ERR_R_MALLOC_FAILURE); | |
91 | return (NULL); | |
92 | } | |
93 | BUF_strlcpy(ret, str, siz + 1); | |
94 | return (ret); | |
95 | } | |
d51519eb DSH |
96 | |
97 | void *BUF_memdup(const void *data, size_t siz) | |
ae5c8664 MC |
98 | { |
99 | void *ret; | |
d51519eb | 100 | |
ae5c8664 MC |
101 | if (data == NULL) |
102 | return (NULL); | |
d51519eb | 103 | |
ae5c8664 MC |
104 | ret = OPENSSL_malloc(siz); |
105 | if (ret == NULL) { | |
106 | BUFerr(BUF_F_BUF_MEMDUP, ERR_R_MALLOC_FAILURE); | |
107 | return (NULL); | |
108 | } | |
109 | return memcpy(ret, data, siz); | |
110 | } | |
d51519eb DSH |
111 | |
112 | size_t BUF_strlcpy(char *dst, const char *src, size_t size) | |
ae5c8664 MC |
113 | { |
114 | size_t l = 0; | |
115 | for (; size > 1 && *src; size--) { | |
116 | *dst++ = *src++; | |
117 | l++; | |
118 | } | |
119 | if (size) | |
120 | *dst = '\0'; | |
121 | return l + strlen(src); | |
122 | } | |
d51519eb DSH |
123 | |
124 | size_t BUF_strlcat(char *dst, const char *src, size_t size) | |
ae5c8664 MC |
125 | { |
126 | size_t l = 0; | |
127 | for (; size > 0 && *dst; size--, dst++) | |
128 | l++; | |
129 | return l + BUF_strlcpy(dst, src, size); | |
130 | } |