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Diffstat (limited to 'src/lib/libcrypto/buffer/buffer.c')
-rw-r--r-- | src/lib/libcrypto/buffer/buffer.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/lib/libcrypto/buffer/buffer.c b/src/lib/libcrypto/buffer/buffer.c deleted file mode 100644 index ac3729d52b..0000000000 --- a/src/lib/libcrypto/buffer/buffer.c +++ /dev/null | |||
@@ -1,194 +0,0 @@ | |||
1 | /* $OpenBSD: buffer.c,v 1.21 2014/07/11 08:44:48 jsing Exp $ */ | ||
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 <stdlib.h> | ||
61 | #include <string.h> | ||
62 | |||
63 | #include <openssl/buffer.h> | ||
64 | #include <openssl/err.h> | ||
65 | |||
66 | /* LIMIT_BEFORE_EXPANSION is the maximum n such that (n+3)/3*4 < 2**31. That | ||
67 | * function is applied in several functions in this file and this limit ensures | ||
68 | * that the result fits in an int. */ | ||
69 | #define LIMIT_BEFORE_EXPANSION 0x5ffffffc | ||
70 | |||
71 | BUF_MEM * | ||
72 | BUF_MEM_new(void) | ||
73 | { | ||
74 | BUF_MEM *ret; | ||
75 | |||
76 | ret = malloc(sizeof(BUF_MEM)); | ||
77 | if (ret == NULL) { | ||
78 | BUFerr(BUF_F_BUF_MEM_NEW, ERR_R_MALLOC_FAILURE); | ||
79 | return (NULL); | ||
80 | } | ||
81 | ret->length = 0; | ||
82 | ret->max = 0; | ||
83 | ret->data = NULL; | ||
84 | return (ret); | ||
85 | } | ||
86 | |||
87 | void | ||
88 | BUF_MEM_free(BUF_MEM *a) | ||
89 | { | ||
90 | if (a == NULL) | ||
91 | return; | ||
92 | |||
93 | if (a->data != NULL) { | ||
94 | explicit_bzero(a->data, a->max); | ||
95 | free(a->data); | ||
96 | } | ||
97 | free(a); | ||
98 | } | ||
99 | |||
100 | int | ||
101 | BUF_MEM_grow(BUF_MEM *str, size_t len) | ||
102 | { | ||
103 | char *ret; | ||
104 | size_t n; | ||
105 | |||
106 | if (str->length >= len) { | ||
107 | str->length = len; | ||
108 | return (len); | ||
109 | } | ||
110 | if (str->max >= len) { | ||
111 | memset(&str->data[str->length], 0, len - str->length); | ||
112 | str->length = len; | ||
113 | return (len); | ||
114 | } | ||
115 | /* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */ | ||
116 | if (len > LIMIT_BEFORE_EXPANSION) { | ||
117 | BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE); | ||
118 | return 0; | ||
119 | } | ||
120 | n = (len + 3) / 3 * 4; | ||
121 | ret = realloc(str->data, n); | ||
122 | if (ret == NULL) { | ||
123 | BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE); | ||
124 | len = 0; | ||
125 | } else { | ||
126 | str->data = ret; | ||
127 | str->max = n; | ||
128 | memset(&str->data[str->length], 0, len - str->length); | ||
129 | str->length = len; | ||
130 | } | ||
131 | return (len); | ||
132 | } | ||
133 | |||
134 | int | ||
135 | BUF_MEM_grow_clean(BUF_MEM *str, size_t len) | ||
136 | { | ||
137 | char *ret; | ||
138 | size_t n; | ||
139 | |||
140 | if (str->length >= len) { | ||
141 | memset(&str->data[len], 0, str->length - len); | ||
142 | str->length = len; | ||
143 | return (len); | ||
144 | } | ||
145 | if (str->max >= len) { | ||
146 | memset(&str->data[str->length], 0, len - str->length); | ||
147 | str->length = len; | ||
148 | return (len); | ||
149 | } | ||
150 | /* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */ | ||
151 | if (len > LIMIT_BEFORE_EXPANSION) { | ||
152 | BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE); | ||
153 | return 0; | ||
154 | } | ||
155 | n = (len + 3) / 3 * 4; | ||
156 | ret = malloc(n); | ||
157 | /* we're not shrinking - that case returns above */ | ||
158 | if ((ret != NULL) && (str->data != NULL)) { | ||
159 | memcpy(ret, str->data, str->max); | ||
160 | explicit_bzero(str->data, str->max); | ||
161 | free(str->data); | ||
162 | } | ||
163 | if (ret == NULL) { | ||
164 | BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE); | ||
165 | len = 0; | ||
166 | } else { | ||
167 | str->data = ret; | ||
168 | str->max = n; | ||
169 | memset(&str->data[str->length], 0, len - str->length); | ||
170 | str->length = len; | ||
171 | } | ||
172 | return (len); | ||
173 | } | ||
174 | |||
175 | void | ||
176 | BUF_reverse(unsigned char *out, const unsigned char *in, size_t size) | ||
177 | { | ||
178 | size_t i; | ||
179 | |||
180 | if (in) { | ||
181 | out += size - 1; | ||
182 | for (i = 0; i < size; i++) | ||
183 | *out-- = *in++; | ||
184 | } else { | ||
185 | unsigned char *q; | ||
186 | char c; | ||
187 | q = out + size - 1; | ||
188 | for (i = 0; i < size / 2; i++) { | ||
189 | c = *q; | ||
190 | *q-- = *out; | ||
191 | *out++ = c; | ||
192 | } | ||
193 | } | ||
194 | } | ||