Mercurial > hg > nginx-quic
annotate src/event/ngx_event_openssl.h @ 6806:75dbab4ea930
Events: improved error event handling for UDP sockets.
Normally, the epoll module calls the read and write handlers depending
on whether EPOLLIN and EPOLLOUT are reported by epoll_wait(). No error
processing is done in the module, the handlers are expected to get an
error when doing I/O.
If an error event is reported without EPOLLIN and EPOLLOUT, the module
set both EPOLLIN and EPOLLOUT to ensure the error event is handled at
least in one active handler.
This works well unless the error is delivered along with only one of
EPOLLIN or EPOLLOUT, and the corresponding handler does not do any I/O.
For example, it happened when getting EPOLLERR|EPOLLOUT from
epoll_wait() upon receiving "ICMP port unreachable" while proxying UDP.
As the write handler had nothing to send it was not able to detect and
log an error, and did not switch to the next upstream.
The fix is to unconditionally set EPOLLIN and EPOLLOUT in case of an
error event. In the aforementioned case, this causes the read handler
to be called which does recv() and detects an error.
In addition to the epoll module, analogous changes were made in
devpoll/eventport/poll.
author | Dmitry Volyntsev <xeioex@nginx.com> |
---|---|
date | Mon, 21 Nov 2016 16:03:42 +0300 |
parents | 56d6bfe6b609 |
children | a7ec59df0c4d |
rev | line source |
---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #ifndef _NGX_EVENT_OPENSSL_H_INCLUDED_ |
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9 #define _NGX_EVENT_OPENSSL_H_INCLUDED_ |
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10 |
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11 |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 |
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15 #include <openssl/ssl.h> |
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16 #include <openssl/err.h> |
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17 #include <openssl/bn.h> |
968 | 18 #include <openssl/conf.h> |
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19 #include <openssl/crypto.h> |
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20 #include <openssl/dh.h> |
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21 #ifndef OPENSSL_NO_ENGINE |
541 | 22 #include <openssl/engine.h> |
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23 #endif |
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24 #include <openssl/evp.h> |
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25 #ifndef OPENSSL_NO_OCSP |
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26 #include <openssl/ocsp.h> |
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27 #endif |
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28 #include <openssl/rand.h> |
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29 #include <openssl/rsa.h> |
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30 #include <openssl/x509.h> |
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31 #include <openssl/x509v3.h> |
541 | 32 |
547 | 33 #define NGX_SSL_NAME "OpenSSL" |
34 | |
35 | |
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36 #if (defined LIBRESSL_VERSION_NUMBER && OPENSSL_VERSION_NUMBER == 0x20000000L) |
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37 #undef OPENSSL_VERSION_NUMBER |
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38 #define OPENSSL_VERSION_NUMBER 0x1000107fL |
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39 #endif |
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40 |
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41 |
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42 #if (OPENSSL_VERSION_NUMBER >= 0x10100001L) |
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43 |
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44 #define ngx_ssl_version() OpenSSL_version(OPENSSL_VERSION) |
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45 |
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46 #else |
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47 |
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48 #define ngx_ssl_version() SSLeay_version(SSLEAY_VERSION) |
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49 |
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50 #endif |
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51 |
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52 |
671 | 53 #define ngx_ssl_session_t SSL_SESSION |
54 #define ngx_ssl_conn_t SSL | |
55 | |
56 | |
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57 struct ngx_ssl_s { |
547 | 58 SSL_CTX *ctx; |
59 ngx_log_t *log; | |
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60 size_t buffer_size; |
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61 }; |
541 | 62 |
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63 |
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64 struct ngx_ssl_connection_s { |
671 | 65 ngx_ssl_conn_t *connection; |
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66 SSL_CTX *session_ctx; |
647 | 67 |
547 | 68 ngx_int_t last; |
69 ngx_buf_t *buf; | |
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70 size_t buffer_size; |
547 | 71 |
72 ngx_connection_handler_pt handler; | |
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73 |
547 | 74 ngx_event_handler_pt saved_read_handler; |
75 ngx_event_handler_pt saved_write_handler; | |
479 | 76 |
547 | 77 unsigned handshaked:1; |
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78 unsigned renegotiation:1; |
547 | 79 unsigned buffer:1; |
80 unsigned no_wait_shutdown:1; | |
81 unsigned no_send_shutdown:1; | |
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82 unsigned handshake_buffer_set:1; |
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83 }; |
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84 |
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85 |
2032 | 86 #define NGX_SSL_NO_SCACHE -2 |
87 #define NGX_SSL_NONE_SCACHE -3 | |
88 #define NGX_SSL_NO_BUILTIN_SCACHE -4 | |
89 #define NGX_SSL_DFLT_BUILTIN_SCACHE -5 | |
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90 |
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91 |
1778 | 92 #define NGX_SSL_MAX_SESSION_SIZE 4096 |
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93 |
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94 typedef struct ngx_ssl_sess_id_s ngx_ssl_sess_id_t; |
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95 |
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96 struct ngx_ssl_sess_id_s { |
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97 ngx_rbtree_node_t node; |
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98 u_char *id; |
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99 size_t len; |
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100 u_char *session; |
1760 | 101 ngx_queue_t queue; |
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102 time_t expire; |
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103 #if (NGX_PTR_SIZE == 8) |
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104 void *stub; |
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105 u_char sess_id[32]; |
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106 #endif |
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107 }; |
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108 |
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109 |
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110 typedef struct { |
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111 ngx_rbtree_t session_rbtree; |
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112 ngx_rbtree_node_t sentinel; |
1760 | 113 ngx_queue_t expire_queue; |
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114 } ngx_ssl_session_cache_t; |
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115 |
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116 |
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117 #ifdef SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB |
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118 |
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119 typedef struct { |
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120 u_char name[16]; |
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121 u_char aes_key[16]; |
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122 u_char hmac_key[16]; |
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123 } ngx_ssl_session_ticket_key_t; |
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124 |
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125 #endif |
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126 |
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127 |
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128 #define NGX_SSL_SSLv2 0x0002 |
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129 #define NGX_SSL_SSLv3 0x0004 |
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130 #define NGX_SSL_TLSv1 0x0008 |
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131 #define NGX_SSL_TLSv1_1 0x0010 |
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132 #define NGX_SSL_TLSv1_2 0x0020 |
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133 |
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134 |
547 | 135 #define NGX_SSL_BUFFER 1 |
577 | 136 #define NGX_SSL_CLIENT 2 |
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137 |
547 | 138 #define NGX_SSL_BUFSIZE 16384 |
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139 |
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140 |
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141 ngx_int_t ngx_ssl_init(ngx_log_t *log); |
969 | 142 ngx_int_t ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols, void *data); |
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143 ngx_int_t ngx_ssl_certificates(ngx_conf_t *cf, ngx_ssl_t *ssl, |
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144 ngx_array_t *certs, ngx_array_t *keys, ngx_array_t *passwords); |
563 | 145 ngx_int_t ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, |
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SSL: the "ssl_password_file" directive.
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146 ngx_str_t *cert, ngx_str_t *key, ngx_array_t *passwords); |
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147 ngx_int_t ngx_ssl_ciphers(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *ciphers, |
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148 ngx_uint_t prefer_server_ciphers); |
647 | 149 ngx_int_t ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, |
671 | 150 ngx_str_t *cert, ngx_int_t depth); |
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151 ngx_int_t ngx_ssl_trusted_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, |
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152 ngx_str_t *cert, ngx_int_t depth); |
2995 | 153 ngx_int_t ngx_ssl_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl); |
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154 ngx_int_t ngx_ssl_stapling(ngx_conf_t *cf, ngx_ssl_t *ssl, |
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155 ngx_str_t *file, ngx_str_t *responder, ngx_uint_t verify); |
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156 ngx_int_t ngx_ssl_stapling_resolver(ngx_conf_t *cf, ngx_ssl_t *ssl, |
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157 ngx_resolver_t *resolver, ngx_msec_t resolver_timeout); |
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158 RSA *ngx_ssl_rsa512_key_callback(ngx_ssl_conn_t *ssl_conn, int is_export, |
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159 int key_length); |
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160 ngx_array_t *ngx_ssl_read_password_file(ngx_conf_t *cf, ngx_str_t *file); |
2044 | 161 ngx_int_t ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file); |
3960 | 162 ngx_int_t ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name); |
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163 ngx_int_t ngx_ssl_session_cache(ngx_ssl_t *ssl, ngx_str_t *sess_ctx, |
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164 ssize_t builtin_session_cache, ngx_shm_zone_t *shm_zone, time_t timeout); |
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165 ngx_int_t ngx_ssl_session_ticket_keys(ngx_conf_t *cf, ngx_ssl_t *ssl, |
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166 ngx_array_t *paths); |
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167 ngx_int_t ngx_ssl_session_cache_init(ngx_shm_zone_t *shm_zone, void *data); |
547 | 168 ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c, |
543 | 169 ngx_uint_t flags); |
577 | 170 |
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171 void ngx_ssl_remove_cached_session(SSL_CTX *ssl, ngx_ssl_session_t *sess); |
577 | 172 ngx_int_t ngx_ssl_set_session(ngx_connection_t *c, ngx_ssl_session_t *session); |
611 | 173 #define ngx_ssl_get_session(c) SSL_get1_session(c->ssl->connection) |
174 #define ngx_ssl_free_session SSL_SESSION_free | |
969 | 175 #define ngx_ssl_get_connection(ssl_conn) \ |
176 SSL_get_ex_data(ssl_conn, ngx_ssl_connection_index) | |
177 #define ngx_ssl_get_server_conf(ssl_ctx) \ | |
178 SSL_CTX_get_ex_data(ssl_ctx, ngx_ssl_server_conf_index) | |
611 | 179 |
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180 #define ngx_ssl_verify_error_optional(n) \ |
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181 (n == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT \ |
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182 || n == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN \ |
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183 || n == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY \ |
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184 || n == X509_V_ERR_CERT_UNTRUSTED \ |
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185 || n == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE) |
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186 |
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Upstream: proxy_ssl_verify and friends.
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187 ngx_int_t ngx_ssl_check_host(ngx_connection_t *c, ngx_str_t *name); |
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188 |
611 | 189 |
671 | 190 ngx_int_t ngx_ssl_get_protocol(ngx_connection_t *c, ngx_pool_t *pool, |
191 ngx_str_t *s); | |
192 ngx_int_t ngx_ssl_get_cipher_name(ngx_connection_t *c, ngx_pool_t *pool, | |
193 ngx_str_t *s); | |
3154 | 194 ngx_int_t ngx_ssl_get_session_id(ngx_connection_t *c, ngx_pool_t *pool, |
195 ngx_str_t *s); | |
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196 ngx_int_t ngx_ssl_get_session_reused(ngx_connection_t *c, ngx_pool_t *pool, |
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197 ngx_str_t *s); |
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198 ngx_int_t ngx_ssl_get_server_name(ngx_connection_t *c, ngx_pool_t *pool, |
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199 ngx_str_t *s); |
2123 | 200 ngx_int_t ngx_ssl_get_raw_certificate(ngx_connection_t *c, ngx_pool_t *pool, |
201 ngx_str_t *s); | |
2045 | 202 ngx_int_t ngx_ssl_get_certificate(ngx_connection_t *c, ngx_pool_t *pool, |
203 ngx_str_t *s); | |
647 | 204 ngx_int_t ngx_ssl_get_subject_dn(ngx_connection_t *c, ngx_pool_t *pool, |
205 ngx_str_t *s); | |
206 ngx_int_t ngx_ssl_get_issuer_dn(ngx_connection_t *c, ngx_pool_t *pool, | |
207 ngx_str_t *s); | |
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208 ngx_int_t ngx_ssl_get_subject_dn_legacy(ngx_connection_t *c, ngx_pool_t *pool, |
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209 ngx_str_t *s); |
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210 ngx_int_t ngx_ssl_get_issuer_dn_legacy(ngx_connection_t *c, ngx_pool_t *pool, |
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211 ngx_str_t *s); |
671 | 212 ngx_int_t ngx_ssl_get_serial_number(ngx_connection_t *c, ngx_pool_t *pool, |
213 ngx_str_t *s); | |
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214 ngx_int_t ngx_ssl_get_fingerprint(ngx_connection_t *c, ngx_pool_t *pool, |
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215 ngx_str_t *s); |
2994 | 216 ngx_int_t ngx_ssl_get_client_verify(ngx_connection_t *c, ngx_pool_t *pool, |
217 ngx_str_t *s); | |
671 | 218 |
647 | 219 |
547 | 220 ngx_int_t ngx_ssl_handshake(ngx_connection_t *c); |
469 | 221 ssize_t ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size); |
539 | 222 ssize_t ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size); |
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223 ssize_t ngx_ssl_recv_chain(ngx_connection_t *c, ngx_chain_t *cl, off_t limit); |
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224 ngx_chain_t *ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, |
489 | 225 off_t limit); |
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226 void ngx_ssl_free_buffer(ngx_connection_t *c); |
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227 ngx_int_t ngx_ssl_shutdown(ngx_connection_t *c); |
583 | 228 void ngx_cdecl ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, |
489 | 229 char *fmt, ...); |
509 | 230 void ngx_ssl_cleanup_ctx(void *data); |
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231 |
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232 |
969 | 233 extern int ngx_ssl_connection_index; |
234 extern int ngx_ssl_server_conf_index; | |
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235 extern int ngx_ssl_session_cache_index; |
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236 extern int ngx_ssl_session_ticket_keys_index; |
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237 extern int ngx_ssl_certificate_index; |
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238 extern int ngx_ssl_next_certificate_index; |
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239 extern int ngx_ssl_stapling_index; |
671 | 240 |
241 | |
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242 #endif /* _NGX_EVENT_OPENSSL_H_INCLUDED_ */ |