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ngx_event_openssl.h
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1 
2 /*
3  * Copyright (C) Igor Sysoev
4  * Copyright (C) Nginx, Inc.
5  */
6 
7 
8 #ifndef _NGX_EVENT_OPENSSL_H_INCLUDED_
9 #define _NGX_EVENT_OPENSSL_H_INCLUDED_
10 
11 
12 #include <ngx_config.h>
13 #include <ngx_core.h>
14 
15 #include <openssl/ssl.h>
16 #include <openssl/err.h>
17 #include <openssl/conf.h>
18 #include <openssl/engine.h>
19 #include <openssl/evp.h>
20 #include <openssl/ocsp.h>
21 
22 #define NGX_SSL_NAME "OpenSSL"
23 
24 
25 #define ngx_ssl_session_t SSL_SESSION
26 #define ngx_ssl_conn_t SSL
27 
28 
29 typedef struct {
30  SSL_CTX *ctx;
31  ngx_log_t *log;
32 } ngx_ssl_t;
33 
34 
35 typedef struct {
36  ngx_ssl_conn_t *connection;
37 
38  ngx_int_t last;
39  ngx_buf_t *buf;
40 
41  ngx_connection_handler_pt handler;
42 
43  ngx_event_handler_pt saved_read_handler;
44  ngx_event_handler_pt saved_write_handler;
45 
46  unsigned handshaked:1;
47  unsigned renegotiation:1;
48  unsigned buffer:1;
49  unsigned no_wait_shutdown:1;
50  unsigned no_send_shutdown:1;
51 } ngx_ssl_connection_t;
52 
53 
54 #define NGX_SSL_NO_SCACHE -2
55 #define NGX_SSL_NONE_SCACHE -3
56 #define NGX_SSL_NO_BUILTIN_SCACHE -4
57 #define NGX_SSL_DFLT_BUILTIN_SCACHE -5
58 
59 
60 #define NGX_SSL_MAX_SESSION_SIZE 4096
61 
62 typedef struct ngx_ssl_sess_id_s ngx_ssl_sess_id_t;
63 
64 struct ngx_ssl_sess_id_s {
65  ngx_rbtree_node_t node;
66  u_char *id;
67  size_t len;
68  u_char *session;
69  ngx_queue_t queue;
70  time_t expire;
71 #if (NGX_PTR_SIZE == 8)
72  void *stub;
73  u_char sess_id[32];
74 #endif
75 };
76 
77 
78 typedef struct {
79  ngx_rbtree_t session_rbtree;
80  ngx_rbtree_node_t sentinel;
81  ngx_queue_t expire_queue;
82 } ngx_ssl_session_cache_t;
83 
84 
85 
86 #define NGX_SSL_SSLv2 0x0002
87 #define NGX_SSL_SSLv3 0x0004
88 #define NGX_SSL_TLSv1 0x0008
89 #define NGX_SSL_TLSv1_1 0x0010
90 #define NGX_SSL_TLSv1_2 0x0020
91 
92 
93 #define NGX_SSL_BUFFER 1
94 #define NGX_SSL_CLIENT 2
95 
96 #define NGX_SSL_BUFSIZE 16384
97 
98 
99 ngx_int_t ngx_ssl_init(ngx_log_t *log);
100 ngx_int_t ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols, void *data);
101 ngx_int_t ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
102  ngx_str_t *cert, ngx_str_t *key);
103 ngx_int_t ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
104  ngx_str_t *cert, ngx_int_t depth);
105 ngx_int_t ngx_ssl_trusted_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl,
106  ngx_str_t *cert, ngx_int_t depth);
107 ngx_int_t ngx_ssl_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl);
108 ngx_int_t ngx_ssl_stapling(ngx_conf_t *cf, ngx_ssl_t *ssl,
109  ngx_str_t *file, ngx_str_t *responder, ngx_uint_t verify);
110 ngx_int_t ngx_ssl_stapling_resolver(ngx_conf_t *cf, ngx_ssl_t *ssl,
111  ngx_resolver_t *resolver, ngx_msec_t resolver_timeout);
112 RSA *ngx_ssl_rsa512_key_callback(SSL *ssl, int is_export, int key_length);
113 ngx_int_t ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file);
114 ngx_int_t ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name);
115 ngx_int_t ngx_ssl_session_cache(ngx_ssl_t *ssl, ngx_str_t *sess_ctx,
116  ssize_t builtin_session_cache, ngx_shm_zone_t *shm_zone, time_t timeout);
117 ngx_int_t ngx_ssl_session_cache_init(ngx_shm_zone_t *shm_zone, void *data);
118 ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c,
119  ngx_uint_t flags);
120 
121 void ngx_ssl_remove_cached_session(SSL_CTX *ssl, ngx_ssl_session_t *sess);
122 ngx_int_t ngx_ssl_set_session(ngx_connection_t *c, ngx_ssl_session_t *session);
123 #define ngx_ssl_get_session(c) SSL_get1_session(c->ssl->connection)
124 #define ngx_ssl_free_session SSL_SESSION_free
125 #define ngx_ssl_get_connection(ssl_conn) \
126  SSL_get_ex_data(ssl_conn, ngx_ssl_connection_index)
127 #define ngx_ssl_get_server_conf(ssl_ctx) \
128  SSL_CTX_get_ex_data(ssl_ctx, ngx_ssl_server_conf_index)
129 
130 #define ngx_ssl_verify_error_optional(n) \
131  (n == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT \
132  || n == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN \
133  || n == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY \
134  || n == X509_V_ERR_CERT_UNTRUSTED \
135  || n == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)
136 
137 
138 ngx_int_t ngx_ssl_get_protocol(ngx_connection_t *c, ngx_pool_t *pool,
139  ngx_str_t *s);
140 ngx_int_t ngx_ssl_get_cipher_name(ngx_connection_t *c, ngx_pool_t *pool,
141  ngx_str_t *s);
142 ngx_int_t ngx_ssl_get_session_id(ngx_connection_t *c, ngx_pool_t *pool,
143  ngx_str_t *s);
144 ngx_int_t ngx_ssl_get_raw_certificate(ngx_connection_t *c, ngx_pool_t *pool,
145  ngx_str_t *s);
146 ngx_int_t ngx_ssl_get_certificate(ngx_connection_t *c, ngx_pool_t *pool,
147  ngx_str_t *s);
148 ngx_int_t ngx_ssl_get_subject_dn(ngx_connection_t *c, ngx_pool_t *pool,
149  ngx_str_t *s);
150 ngx_int_t ngx_ssl_get_issuer_dn(ngx_connection_t *c, ngx_pool_t *pool,
151  ngx_str_t *s);
152 ngx_int_t ngx_ssl_get_serial_number(ngx_connection_t *c, ngx_pool_t *pool,
153  ngx_str_t *s);
154 ngx_int_t ngx_ssl_get_client_verify(ngx_connection_t *c, ngx_pool_t *pool,
155  ngx_str_t *s);
156 
157 
158 ngx_int_t ngx_ssl_handshake(ngx_connection_t *c);
159 ssize_t ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size);
160 ssize_t ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size);
161 ssize_t ngx_ssl_recv_chain(ngx_connection_t *c, ngx_chain_t *cl);
162 ngx_chain_t *ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in,
163  off_t limit);
164 void ngx_ssl_free_buffer(ngx_connection_t *c);
165 ngx_int_t ngx_ssl_shutdown(ngx_connection_t *c);
166 void ngx_cdecl ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
167  char *fmt, ...);
168 void ngx_ssl_cleanup_ctx(void *data);
169 
170 
171 extern int ngx_ssl_connection_index;
172 extern int ngx_ssl_server_conf_index;
173 extern int ngx_ssl_session_cache_index;
174 extern int ngx_ssl_certificate_index;
175 extern int ngx_ssl_stapling_index;
176 
177 
178 #endif /* _NGX_EVENT_OPENSSL_H_INCLUDED_ */
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