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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
/*
* Solaris has thread-safe crypt()
* Linux has crypt_r(); "struct crypt_data" is more than 128K
* FreeBSD needs the mutex to protect crypt()
*
* TODO:
* ngx_crypt_init() to init mutex
*/
#if (NGX_CRYPT)
#if (NGX_HAVE_GNU_CRYPT_R)
ngx_int_t
ngx_crypt(ngx_pool_t *pool, u_char *key, u_char *salt, u_char **encrypted)
{
char *value;
size_t len;
ngx_err_t err;
struct crypt_data cd;
ngx_set_errno(0);
cd.initialized = 0;
/* work around the glibc bug */
cd.current_salt[0] = ~salt[0];
value = crypt_r((char *) key, (char *) salt, &cd);
err = ngx_errno;
if (err == 0) {
len = ngx_strlen(value);
*encrypted = ngx_palloc(pool, len);
if (*encrypted) {
ngx_memcpy(*encrypted, value, len + 1);
return NGX_OK;
}
}
ngx_log_error(NGX_LOG_CRIT, pool->log, err, "crypt_r() failed");
return NGX_ERROR;
}
#else
ngx_int_t
ngx_crypt(ngx_pool_t *pool, u_char *key, u_char *salt, u_char **encrypted)
{
char *value;
size_t len;
ngx_err_t err;
#if (NGX_THREADS && NGX_NONREENTRANT_CRYPT)
/* crypt() is a time consuming funtion, so we only try to lock */
if (ngx_mutex_trylock(ngx_crypt_mutex) != NGX_OK) {
return NGX_AGAIN;
}
#endif
ngx_set_errno(0);
value = crypt((char *) key, (char *) salt);
if (value) {
len = ngx_strlen(value);
*encrypted = ngx_palloc(pool, len);
if (*encrypted) {
ngx_memcpy(*encrypted, value, len + 1);
}
#if (NGX_THREADS && NGX_NONREENTRANT_CRYPT)
ngx_mutex_unlock(ngx_crypt_mutex);
#endif
return NGX_OK;
}
err = ngx_errno;
#if (NGX_THREADS && NGX_NONREENTRANT_CRYPT)
ngx_mutex_unlock(ngx_crypt_mutex);
#endif
ngx_log_error(NGX_LOG_CRIT, pool->log, err, "crypt() failed");
return NGX_ERROR;
}
#endif
#endif /* NGX_CRYPT */
|
