1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_hash_h__
#define INCLUDE_hash_h__
#include "git2_util.h"
#include "hash/sha.h"
typedef struct {
void *data;
size_t len;
} git_str_vec;
typedef enum {
GIT_HASH_ALGORITHM_NONE = 0,
GIT_HASH_ALGORITHM_SHA1,
GIT_HASH_ALGORITHM_SHA256
} git_hash_algorithm_t;
#define GIT_HASH_MAX_SIZE GIT_HASH_SHA256_SIZE
typedef struct git_hash_ctx {
union {
git_hash_sha1_ctx sha1;
git_hash_sha256_ctx sha256;
} ctx;
git_hash_algorithm_t algorithm;
} git_hash_ctx;
int git_hash_global_init(void);
int git_hash_ctx_init(git_hash_ctx *ctx, git_hash_algorithm_t algorithm);
void git_hash_ctx_cleanup(git_hash_ctx *ctx);
int git_hash_init(git_hash_ctx *c);
int git_hash_update(git_hash_ctx *c, const void *data, size_t len);
int git_hash_final(unsigned char *out, git_hash_ctx *c);
int git_hash_buf(unsigned char *out, const void *data, size_t len, git_hash_algorithm_t algorithm);
int git_hash_vec(unsigned char *out, git_str_vec *vec, size_t n, git_hash_algorithm_t algorithm);
int git_hash_fmt(char *out, unsigned char *hash, size_t hash_len);
GIT_INLINE(size_t) git_hash_size(git_hash_algorithm_t algorithm) {
switch (algorithm) {
case GIT_HASH_ALGORITHM_SHA1:
return GIT_HASH_SHA1_SIZE;
case GIT_HASH_ALGORITHM_SHA256:
return GIT_HASH_SHA256_SIZE;
default:
return 0;
}
}
#endif
|
