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-rw-r--r--src/microhttpd_ws/sha1.h245
1 files changed, 105 insertions, 140 deletions
diff --git a/src/microhttpd_ws/sha1.h b/src/microhttpd_ws/sha1.h
index be0d190b..851a4429 100644
--- a/src/microhttpd_ws/sha1.h
+++ b/src/microhttpd_ws/sha1.h
@@ -1,145 +1,110 @@
1/* Declarations of functions and data types used for SHA1 sum 1/*
2 library functions. 2 This file is part of libmicrohttpd
3 Copyright (C) 2000-2021 Free Software Foundation, Inc. 3 Copyright (C) 2019-2021 Karlson2k (Evgeny Grin)
4 4
5 This program is free software; you can redistribute it and/or modify it 5 This library is free software; you can redistribute it and/or
6 under the terms of the GNU General Public License as published by the 6 modify it under the terms of the GNU Lesser General Public
7 Free Software Foundation; either version 3, or (at your option) any 7 License as published by the Free Software Foundation; either
8 later version. 8 version 2.1 of the License, or (at your option) any later version.
9 9
10 This program is distributed in the hope that it will be useful, 10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 GNU General Public License for more details. 13 Lesser General Public License for more details.
14 14
15 You should have received a copy of the GNU General Public License 15 You should have received a copy of the GNU Lesser General Public
16 along with this program; if not, write to the Free Software Foundation, 16 License along with this library.
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 17 If not, see <http://www.gnu.org/licenses/>.
18 18*/
19#ifndef SHA1_H 19
20# define SHA1_H 1 20/**
21 21 * @file microhttpd/sha1.h
22#include <stdio.h> 22 * @brief Calculation of SHA-1 digest
23 23 * @author Karlson2k (Evgeny Grin)
24#if defined HAVE_LIMITS_H || _LIBC 24 */
25# include <limits.h> 25
26#endif 26#ifndef MHD_SHA1_H
27 27#define MHD_SHA1_H 1
28/*#include "ansidecl.h"*/ 28
29 29#include "mhd_options.h"
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>
39typedef u_int32_t sha1_uint32;
40typedef uintptr_t sha1_uintptr;
41#elif defined (HAVE_SYS_TYPES_H) && defined (HAVE_STDINT_H)
42#include <stdint.h> 30#include <stdint.h>
43#include <sys/types.h> 31#ifdef HAVE_STDDEF_H
44typedef uint32_t sha1_uint32; 32#include <stddef.h> /* for size_t */
45typedef uintptr_t sha1_uintptr; 33#endif /* HAVE_STDDEF_H */
46#else 34
47# define INT_MAX_32_BITS 2147483647 35/**
48 36 * SHA-1 digest is kept internally as 5 32-bit words.
49/* If UINT_MAX isn't defined, assume it's a 32-bit type. 37 */
50 This should be valid for all systems GNU cares about because 38#define _SHA1_DIGEST_LENGTH 5
51 that doesn't include 16-bit systems, and only modern systems 39
52 (that certainly have <limits.h>) have 64+-bit integral types. */ 40/**
53 41 * Number of bits in single SHA-1 word
54# ifndef INT_MAX 42 */
55# define INT_MAX INT_MAX_32_BITS 43#define SHA1_WORD_SIZE_BITS 32
56# endif 44
57 45/**
58# if INT_MAX == INT_MAX_32_BITS 46 * Number of bytes in single SHA-1 word
59typedef unsigned int sha1_uint32; 47 */
60# else 48#define SHA1_BYTES_IN_WORD (SHA1_WORD_SIZE_BITS / 8)
61# if SHRT_MAX == INT_MAX_32_BITS 49
62typedef unsigned short sha1_uint32; 50/**
63# else 51 * Size of SHA-1 digest in bytes
64# if LONG_MAX == INT_MAX_32_BITS 52 */
65typedef unsigned long sha1_uint32; 53#define SHA1_DIGEST_SIZE (_SHA1_DIGEST_LENGTH * SHA1_BYTES_IN_WORD)
66# else 54
67/* The following line is intended to evoke an error. 55/**
68 Using #error is not portable enough. */ 56 * Size of SHA-1 digest string in chars including termination NUL
69"Cannot determine unsigned 32-bit data type." 57 */
70# endif 58#define SHA1_DIGEST_STRING_SIZE ((SHA1_DIGEST_SIZE) * 2 + 1)
71# endif 59
72# endif 60/**
73#endif 61 * Size of single processing block in bits
74 62 */
75#ifdef __cplusplus 63#define SHA1_BLOCK_SIZE_BITS 512
76extern "C" { 64
77#endif 65/**
78 66 * Size of single processing block in bytes
79/* Structure to save state of computation between the single steps. */ 67 */
68#define SHA1_BLOCK_SIZE (SHA1_BLOCK_SIZE_BITS / 8)
69
70
80struct sha1_ctx 71struct sha1_ctx
81{ 72{
82 sha1_uint32 A; 73 uint32_t H[_SHA1_DIGEST_LENGTH]; /**< Intermediate hash value / digest at end of calculation */
83 sha1_uint32 B; 74 uint8_t buffer[SHA1_BLOCK_SIZE]; /**< SHA256 input data buffer */
84 sha1_uint32 C; 75 uint64_t count; /**< number of bytes, mod 2^64 */
85 sha1_uint32 D;
86 sha1_uint32 E;
87
88 sha1_uint32 total[2];
89 sha1_uint32 buflen;
90 sha1_uint32 buffer[32];
91}; 76};
92 77
93 78/**
94/* Initialize structure containing state of computation. */ 79 * Initialise structure for SHA-1 calculation.
95extern void sha1_init_ctx (struct sha1_ctx *ctx); 80 *
96 81 * @param ctx must be a `struct sha1_ctx *`
97/* Starting with the result of former calls of this function (or the 82 */
98 initialization function update the context for the next LEN bytes 83void
99 starting at BUFFER. 84MHD_SHA1_init (void *ctx_);
100 It is necessary that LEN is a multiple of 64!!! */ 85
101extern void sha1_process_block (const void *buffer, size_t len, 86
102 struct sha1_ctx *ctx); 87/**
103 88 * Process portion of bytes.
104/* Starting with the result of former calls of this function (or the 89 *
105 initialization function update the context for the next LEN bytes 90 * @param ctx_ must be a `struct sha1_ctx *`
106 starting at BUFFER. 91 * @param data bytes to add to hash
107 It is NOT required that LEN is a multiple of 64. */ 92 * @param length number of bytes in @a data
108extern void sha1_process_bytes (const void *buffer, size_t len, 93 */
109 struct sha1_ctx *ctx); 94void
110 95MHD_SHA1_update (void *ctx_,
111/* Process the remaining bytes in the buffer and put result from CTX 96 const uint8_t *data,
112 in first 20 bytes following RESBUF. The result is always in little 97 size_t length);
113 endian byte order, so that a byte-wise output yields to the wanted 98
114 ASCII representation of the message digest. 99
115 100/**
116 IMPORTANT: On some systems it is required that RESBUF be correctly 101 * Finalise SHA-1 calculation, return digest.
117 aligned for a 32 bits value. */ 102 *
118extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); 103 * @param ctx_ must be a `struct sha1_ctx *`
119 104 * @param[out] digest set to the hash, must be #SHA1_DIGEST_SIZE bytes
120 105 */
121/* Put result from CTX in first 20 bytes following RESBUF. The result is 106void
122 always in little endian byte order, so that a byte-wise output yields 107MHD_SHA1_finish (void *ctx_,
123 to the wanted ASCII representation of the message digest. 108 uint8_t digest[SHA1_DIGEST_SIZE]);
124 109
125 IMPORTANT: On some systems it is required that RESBUF is correctly 110#endif /* MHD_SHA1_H */
126 aligned for a 32 bits value. */
127extern 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. */
133extern 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. */
139extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
140
141#ifdef __cplusplus
142}
143#endif
144
145#endif