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Diffstat (limited to 'src/microhttpd_ws/sha1.h')
-rw-r--r-- | src/microhttpd_ws/sha1.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/microhttpd_ws/sha1.h b/src/microhttpd_ws/sha1.h new file mode 100644 index 00000000..be0d190b --- /dev/null +++ b/src/microhttpd_ws/sha1.h | |||
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1 | /* Declarations of functions and data types used for SHA1 sum | ||
2 | library functions. | ||
3 | Copyright (C) 2000-2021 Free Software Foundation, Inc. | ||
4 | |||
5 | This program is free software; you can redistribute it and/or modify it | ||
6 | under the terms of the GNU General Public License as published by the | ||
7 | Free Software Foundation; either version 3, or (at your option) any | ||
8 | later version. | ||
9 | |||
10 | This program is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | GNU General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with this program; if not, write to the Free Software Foundation, | ||
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | ||
18 | |||
19 | #ifndef SHA1_H | ||
20 | # define SHA1_H 1 | ||
21 | |||
22 | #include <stdio.h> | ||
23 | |||
24 | #if defined HAVE_LIMITS_H || _LIBC | ||
25 | # include <limits.h> | ||
26 | #endif | ||
27 | |||
28 | /*#include "ansidecl.h"*/ | ||
29 | |||
30 | /* The following contortions are an attempt to use the C preprocessor | ||
31 | to determine an unsigned integral type that is 32 bits wide. An | ||
32 | alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but | ||
33 | doing that would require that the configure script compile and *run* | ||
34 | the resulting executable. Locally running cross-compiled executables | ||
35 | is usually not possible. */ | ||
36 | |||
37 | #ifdef _LIBC | ||
38 | # include <sys/types.h> | ||
39 | typedef u_int32_t sha1_uint32; | ||
40 | typedef uintptr_t sha1_uintptr; | ||
41 | #elif defined (HAVE_SYS_TYPES_H) && defined (HAVE_STDINT_H) | ||
42 | #include <stdint.h> | ||
43 | #include <sys/types.h> | ||
44 | typedef uint32_t sha1_uint32; | ||
45 | typedef uintptr_t sha1_uintptr; | ||
46 | #else | ||
47 | # define INT_MAX_32_BITS 2147483647 | ||
48 | |||
49 | /* If UINT_MAX isn't defined, assume it's a 32-bit type. | ||
50 | This should be valid for all systems GNU cares about because | ||
51 | that doesn't include 16-bit systems, and only modern systems | ||
52 | (that certainly have <limits.h>) have 64+-bit integral types. */ | ||
53 | |||
54 | # ifndef INT_MAX | ||
55 | # define INT_MAX INT_MAX_32_BITS | ||
56 | # endif | ||
57 | |||
58 | # if INT_MAX == INT_MAX_32_BITS | ||
59 | typedef unsigned int sha1_uint32; | ||
60 | # else | ||
61 | # if SHRT_MAX == INT_MAX_32_BITS | ||
62 | typedef unsigned short sha1_uint32; | ||
63 | # else | ||
64 | # if LONG_MAX == INT_MAX_32_BITS | ||
65 | typedef unsigned long sha1_uint32; | ||
66 | # else | ||
67 | /* The following line is intended to evoke an error. | ||
68 | Using #error is not portable enough. */ | ||
69 | "Cannot determine unsigned 32-bit data type." | ||
70 | # endif | ||
71 | # endif | ||
72 | # endif | ||
73 | #endif | ||
74 | |||
75 | #ifdef __cplusplus | ||
76 | extern "C" { | ||
77 | #endif | ||
78 | |||
79 | /* Structure to save state of computation between the single steps. */ | ||
80 | struct sha1_ctx | ||
81 | { | ||
82 | sha1_uint32 A; | ||
83 | sha1_uint32 B; | ||
84 | sha1_uint32 C; | ||
85 | sha1_uint32 D; | ||
86 | sha1_uint32 E; | ||
87 | |||
88 | sha1_uint32 total[2]; | ||
89 | sha1_uint32 buflen; | ||
90 | sha1_uint32 buffer[32]; | ||
91 | }; | ||
92 | |||
93 | |||
94 | /* Initialize structure containing state of computation. */ | ||
95 | extern void sha1_init_ctx (struct sha1_ctx *ctx); | ||
96 | |||
97 | /* Starting with the result of former calls of this function (or the | ||
98 | initialization function update the context for the next LEN bytes | ||
99 | starting at BUFFER. | ||
100 | It is necessary that LEN is a multiple of 64!!! */ | ||
101 | extern void sha1_process_block (const void *buffer, size_t len, | ||
102 | struct sha1_ctx *ctx); | ||
103 | |||
104 | /* Starting with the result of former calls of this function (or the | ||
105 | initialization function update the context for the next LEN bytes | ||
106 | starting at BUFFER. | ||
107 | It is NOT required that LEN is a multiple of 64. */ | ||
108 | extern void sha1_process_bytes (const void *buffer, size_t len, | ||
109 | struct sha1_ctx *ctx); | ||
110 | |||
111 | /* Process the remaining bytes in the buffer and put result from CTX | ||
112 | in first 20 bytes following RESBUF. The result is always in little | ||
113 | endian byte order, so that a byte-wise output yields to the wanted | ||
114 | ASCII representation of the message digest. | ||
115 | |||
116 | IMPORTANT: On some systems it is required that RESBUF be correctly | ||
117 | aligned for a 32 bits value. */ | ||
118 | extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); | ||
119 | |||
120 | |||
121 | /* Put result from CTX in first 20 bytes following RESBUF. The result is | ||
122 | always in little endian byte order, so that a byte-wise output yields | ||
123 | to the wanted ASCII representation of the message digest. | ||
124 | |||
125 | IMPORTANT: On some systems it is required that RESBUF is correctly | ||
126 | aligned for a 32 bits value. */ | ||
127 | extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); | ||
128 | |||
129 | |||
130 | /* Compute SHA1 message digest for bytes read from STREAM. The | ||
131 | resulting message digest number will be written into the 20 bytes | ||
132 | beginning at RESBLOCK. */ | ||
133 | extern int sha1_stream (FILE *stream, void *resblock); | ||
134 | |||
135 | /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The | ||
136 | result is always in little endian byte order, so that a byte-wise | ||
137 | output yields to the wanted ASCII representation of the message | ||
138 | digest. */ | ||
139 | extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); | ||
140 | |||
141 | #ifdef __cplusplus | ||
142 | } | ||
143 | #endif | ||
144 | |||
145 | #endif | ||