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
109
110
111
112
113
114
115
116
|
/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NXT_TLS_H_INCLUDED_
#define _NXT_TLS_H_INCLUDED_
#include <nxt_conf.h>
/*
* The SSL/TLS libraries lack vector I/O interface yet add noticeable
* overhead to each SSL/TLS record so buffering allows to decrease the
* overhead. The typical overhead size is about 30 bytes, however, TLS
* supports also random padding up to 255 bytes. The maximum SSLv3/TLS
* record size is 16K. However, large records increase decryption latency.
* 4K is good compromise between 1-6% of SSL/TLS overhead and the latency.
* 4K buffer allows to send one SSL/TLS record (4096-bytes data and up to
* 224-bytes overhead) in three 1440-bytes TCP/IPv4 packets with timestamps
* and compatible with tunnels.
*/
#define NXT_TLS_BUFFER_SIZE 4096
typedef struct nxt_tls_conf_s nxt_tls_conf_t;
typedef struct nxt_tls_bundle_conf_s nxt_tls_bundle_conf_t;
typedef struct nxt_tls_init_s nxt_tls_init_t;
typedef struct nxt_tls_ticket_s nxt_tls_ticket_t;
typedef struct nxt_tls_tickets_s nxt_tls_tickets_t;
typedef struct {
nxt_int_t (*library_init)(nxt_task_t *task);
void (*library_free)(nxt_task_t *task);
nxt_int_t (*server_init)(nxt_task_t *task, nxt_mp_t *mp,
nxt_tls_init_t *tls_init,
nxt_bool_t last);
void (*server_free)(nxt_task_t *task,
nxt_tls_conf_t *conf);
} nxt_tls_lib_t;
typedef struct {
nxt_tls_bundle_conf_t *bundle;
nxt_str_t name;
} nxt_tls_bundle_hash_item_t;
struct nxt_tls_bundle_conf_s {
void *ctx;
nxt_fd_t chain_file;
nxt_str_t name;
nxt_tls_bundle_conf_t *next;
};
struct nxt_tls_conf_s {
nxt_tls_bundle_conf_t *bundle;
nxt_lvlhsh_t bundle_hash;
nxt_tls_tickets_t *tickets;
void (*conn_init)(nxt_task_t *task,
nxt_tls_conf_t *conf, nxt_conn_t *c);
const nxt_tls_lib_t *lib;
char *ciphers;
char *ca_certificate;
size_t buffer_size;
nxt_bool_t no_wait_shutdown;
};
struct nxt_tls_init_s {
size_t cache_size;
nxt_time_t timeout;
nxt_conf_value_t *conf_cmds;
nxt_conf_value_t *tickets_conf;
nxt_tls_conf_t *conf;
};
#if (NXT_HAVE_OPENSSL)
extern const nxt_tls_lib_t nxt_openssl_lib;
void nxt_cdecl nxt_openssl_log_error(nxt_task_t *task, nxt_uint_t level,
const char *fmt, ...);
u_char *nxt_openssl_copy_error(u_char *p, u_char *end);
#endif
#if (NXT_HAVE_GNUTLS)
extern const nxt_tls_lib_t nxt_gnutls_lib;
#endif
#if (NXT_HAVE_CYASSL)
extern const nxt_tls_lib_t nxt_cyassl_lib;
#endif
#if (NXT_HAVE_POLARSSL)
extern const nxt_tls_lib_t nxt_polar_lib;
#endif
#endif /* _NXT_TLS_H_INCLUDED_ */
|
