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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* mhash.c
* Wrapper for mhash library.
*
* Copyright (c) 2000 Marko Kreen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: mhash.c,v 1.3 2001/03/22 03:59:10 momjian Exp $
*/
#include "postgres.h"
#include "pgcrypto.h"
#include <mhash.h>
static uint
pg_mhash_len(pg_digest * hash);
static uint8 *pg_mhash_digest(pg_digest * hash, uint8 *src,
uint len, uint8 *buf);
static uint
pg_mhash_len(pg_digest * h)
{
return mhash_get_block_size(h->misc.code);
}
static uint8 *
pg_mhash_digest(pg_digest * h, uint8 *src, uint len, uint8 *dst)
{
uint8 *res;
MHASH mh = mhash_init(h->misc.code);
mhash(mh, src, len);
res = mhash_end(mh);
memcpy(dst, res, mhash_get_block_size(h->misc.code));
mhash_free(res);
return dst;
}
pg_digest *
pg_find_digest(pg_digest * h, char *name)
{
size_t hnum,
i,
b;
char *mname;
hnum = mhash_count();
for (i = 0; i <= hnum; i++)
{
mname = mhash_get_hash_name(i);
if (mname == NULL)
continue;
b = strcasecmp(name, mname);
free(mname);
if (!b)
{
h->name = mhash_get_hash_name(i);
h->length = pg_mhash_len;
h->digest = pg_mhash_digest;
h->misc.code = i;
return h;
}
}
return NULL;
}
|
