Mercurial > hg > nginx
annotate src/mail/ngx_mail.h @ 6774:bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
This is needed to allow TLS client certificate auth to work. With
ssl_verify_client configured, the auth daemon can choose to allow the
connection to proceed based on the certificate data.
This has been tested with Thunderbird for IMAP only. I've not yet found a
client that will do client certificate auth for POP3 or SMTP, and the method is
not really documented anywhere that I can find. That said, its simple enough
that the way I've done is probably right.
| author | Rob N ★ <robn@fastmail.com> |
|---|---|
| date | Sat, 08 Oct 2016 18:05:00 +1100 |
| parents | a9a50bb65120 |
| children | 6c13008ad503 |
| 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. |
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5 */ |
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7 |
| 1136 | 8 #ifndef _NGX_MAIL_H_INCLUDED_ |
| 9 #define _NGX_MAIL_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 #include <ngx_event.h> |
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15 #include <ngx_event_connect.h> |
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16 |
| 1136 | 17 #if (NGX_MAIL_SSL) |
| 18 #include <ngx_mail_ssl_module.h> | |
| 539 | 19 #endif |
| 20 | |
| 21 | |
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22 |
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23 typedef struct { |
| 583 | 24 void **main_conf; |
| 25 void **srv_conf; | |
| 1136 | 26 } ngx_mail_conf_ctx_t; |
| 521 | 27 |
| 28 | |
| 29 typedef struct { | |
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30 ngx_sockaddr_t sockaddr; |
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31 socklen_t socklen; |
| 641 | 32 |
| 33 /* server ctx */ | |
| 1136 | 34 ngx_mail_conf_ctx_t *ctx; |
| 641 | 35 |
| 36 unsigned bind:1; | |
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37 unsigned wildcard:1; |
| 2224 | 38 unsigned ssl:1; |
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39 #if (NGX_HAVE_INET6) |
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40 unsigned ipv6only:1; |
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41 #endif |
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42 unsigned so_keepalive:2; |
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43 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
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44 int tcp_keepidle; |
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45 int tcp_keepintvl; |
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46 int tcp_keepcnt; |
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47 #endif |
| 6173 | 48 int backlog; |
| 1136 | 49 } ngx_mail_listen_t; |
| 641 | 50 |
| 51 | |
| 52 typedef struct { | |
| 1136 | 53 ngx_mail_conf_ctx_t *ctx; |
| 641 | 54 ngx_str_t addr_text; |
| 2224 | 55 ngx_uint_t ssl; /* unsigned ssl:1; */ |
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56 } ngx_mail_addr_conf_t; |
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57 |
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58 typedef struct { |
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59 in_addr_t addr; |
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60 ngx_mail_addr_conf_t conf; |
| 1136 | 61 } ngx_mail_in_addr_t; |
| 641 | 62 |
| 63 | |
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64 #if (NGX_HAVE_INET6) |
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65 |
| 641 | 66 typedef struct { |
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67 struct in6_addr addr6; |
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68 ngx_mail_addr_conf_t conf; |
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69 } ngx_mail_in6_addr_t; |
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70 |
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71 #endif |
| 641 | 72 |
| 73 | |
| 74 typedef struct { | |
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75 /* ngx_mail_in_addr_t or ngx_mail_in6_addr_t */ |
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76 void *addrs; |
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77 ngx_uint_t naddrs; |
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78 } ngx_mail_port_t; |
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79 |
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80 |
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81 typedef struct { |
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82 int family; |
| 641 | 83 in_port_t port; |
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84 ngx_array_t addrs; /* array of ngx_mail_conf_addr_t */ |
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85 } ngx_mail_conf_port_t; |
| 641 | 86 |
| 87 | |
| 88 typedef struct { | |
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89 ngx_mail_listen_t opt; |
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90 } ngx_mail_conf_addr_t; |
| 641 | 91 |
| 92 | |
| 93 typedef struct { | |
| 1136 | 94 ngx_array_t servers; /* ngx_mail_core_srv_conf_t */ |
| 95 ngx_array_t listen; /* ngx_mail_listen_t */ | |
| 96 } ngx_mail_core_main_conf_t; | |
| 521 | 97 |
| 98 | |
| 1136 | 99 #define NGX_MAIL_POP3_PROTOCOL 0 |
| 100 #define NGX_MAIL_IMAP_PROTOCOL 1 | |
| 101 #define NGX_MAIL_SMTP_PROTOCOL 2 | |
| 521 | 102 |
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103 |
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104 typedef struct ngx_mail_protocol_s ngx_mail_protocol_t; |
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105 |
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106 |
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107 typedef struct { |
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108 ngx_mail_protocol_t *protocol; |
| 521 | 109 |
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110 ngx_msec_t timeout; |
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111 ngx_msec_t resolver_timeout; |
| 521 | 112 |
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113 ngx_str_t server_name; |
| 527 | 114 |
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115 u_char *file_name; |
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116 ngx_uint_t line; |
| 527 | 117 |
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118 ngx_resolver_t *resolver; |
| 6130 | 119 ngx_log_t *error_log; |
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120 |
| 521 | 121 /* server ctx */ |
| 1136 | 122 ngx_mail_conf_ctx_t *ctx; |
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123 |
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124 ngx_uint_t listen; /* unsigned listen:1; */ |
| 1136 | 125 } ngx_mail_core_srv_conf_t; |
| 521 | 126 |
| 127 | |
| 527 | 128 typedef enum { |
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129 ngx_pop3_start = 0, |
| 527 | 130 ngx_pop3_user, |
| 809 | 131 ngx_pop3_passwd, |
| 132 ngx_pop3_auth_login_username, | |
| 133 ngx_pop3_auth_login_password, | |
| 134 ngx_pop3_auth_plain, | |
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135 ngx_pop3_auth_cram_md5, |
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136 ngx_pop3_auth_external |
| 1673 | 137 } ngx_pop3_state_e; |
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138 |
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139 |
| 1136 | 140 typedef enum { |
| 141 ngx_imap_start = 0, | |
| 1323 | 142 ngx_imap_auth_login_username, |
| 143 ngx_imap_auth_login_password, | |
| 144 ngx_imap_auth_plain, | |
| 145 ngx_imap_auth_cram_md5, | |
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146 ngx_imap_auth_external, |
| 1136 | 147 ngx_imap_login, |
| 148 ngx_imap_user, | |
| 149 ngx_imap_passwd | |
| 150 } ngx_imap_state_e; | |
| 151 | |
| 152 | |
| 153 typedef enum { | |
| 154 ngx_smtp_start = 0, | |
| 155 ngx_smtp_auth_login_username, | |
| 156 ngx_smtp_auth_login_password, | |
| 157 ngx_smtp_auth_plain, | |
| 158 ngx_smtp_auth_cram_md5, | |
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159 ngx_smtp_auth_external, |
| 1136 | 160 ngx_smtp_helo, |
| 2309 | 161 ngx_smtp_helo_xclient, |
| 162 ngx_smtp_helo_from, | |
| 163 ngx_smtp_xclient, | |
| 164 ngx_smtp_xclient_from, | |
| 2497 | 165 ngx_smtp_xclient_helo, |
| 2309 | 166 ngx_smtp_from, |
| 167 ngx_smtp_to | |
| 1136 | 168 } ngx_smtp_state_e; |
| 169 | |
| 170 | |
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171 typedef struct { |
| 521 | 172 ngx_peer_connection_t upstream; |
| 173 ngx_buf_t *buffer; | |
| 1136 | 174 } ngx_mail_proxy_ctx_t; |
| 521 | 175 |
| 176 | |
| 177 typedef struct { | |
| 1136 | 178 uint32_t signature; /* "MAIL" */ |
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179 |
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180 ngx_connection_t *connection; |
| 521 | 181 |
| 539 | 182 ngx_str_t out; |
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183 ngx_buf_t *buffer; |
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184 |
| 521 | 185 void **ctx; |
| 186 void **main_conf; | |
| 187 void **srv_conf; | |
| 188 | |
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189 ngx_resolver_ctx_t *resolver_ctx; |
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190 |
| 1136 | 191 ngx_mail_proxy_ctx_t *proxy; |
| 521 | 192 |
| 1136 | 193 ngx_uint_t mail_state; |
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194 |
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195 unsigned protocol:3; |
| 539 | 196 unsigned blocked:1; |
| 197 unsigned quit:1; | |
| 527 | 198 unsigned quoted:1; |
| 543 | 199 unsigned backslash:1; |
| 200 unsigned no_sync_literal:1; | |
| 641 | 201 unsigned starttls:1; |
| 1136 | 202 unsigned esmtp:1; |
| 2309 | 203 unsigned auth_method:3; |
| 883 | 204 unsigned auth_wait:1; |
|
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205 |
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206 ngx_str_t login; |
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207 ngx_str_t passwd; |
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208 |
| 800 | 209 ngx_str_t salt; |
| 527 | 210 ngx_str_t tag; |
| 539 | 211 ngx_str_t tagged_line; |
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212 ngx_str_t text; |
| 527 | 213 |
| 641 | 214 ngx_str_t *addr_text; |
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215 ngx_str_t host; |
| 1136 | 216 ngx_str_t smtp_helo; |
| 2309 | 217 ngx_str_t smtp_from; |
| 218 ngx_str_t smtp_to; | |
| 641 | 219 |
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220 ngx_str_t cmd; |
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221 |
|
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222 ngx_uint_t command; |
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223 ngx_array_t args; |
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224 |
| 527 | 225 ngx_uint_t login_attempt; |
| 226 | |
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227 /* used to parse POP3/IMAP/SMTP command */ |
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228 |
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229 ngx_uint_t state; |
| 527 | 230 u_char *cmd_start; |
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231 u_char *arg_start; |
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232 u_char *arg_end; |
| 527 | 233 ngx_uint_t literal_len; |
| 1136 | 234 } ngx_mail_session_t; |
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235 |
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236 |
| 541 | 237 typedef struct { |
| 583 | 238 ngx_str_t *client; |
| 1136 | 239 ngx_mail_session_t *session; |
| 240 } ngx_mail_log_ctx_t; | |
| 541 | 241 |
| 242 | |
| 1323 | 243 #define NGX_POP3_USER 1 |
| 244 #define NGX_POP3_PASS 2 | |
| 245 #define NGX_POP3_CAPA 3 | |
| 246 #define NGX_POP3_QUIT 4 | |
| 247 #define NGX_POP3_NOOP 5 | |
| 248 #define NGX_POP3_STLS 6 | |
| 249 #define NGX_POP3_APOP 7 | |
| 250 #define NGX_POP3_AUTH 8 | |
| 251 #define NGX_POP3_STAT 9 | |
| 252 #define NGX_POP3_LIST 10 | |
| 253 #define NGX_POP3_RETR 11 | |
| 254 #define NGX_POP3_DELE 12 | |
| 255 #define NGX_POP3_RSET 13 | |
| 256 #define NGX_POP3_TOP 14 | |
| 257 #define NGX_POP3_UIDL 15 | |
|
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258 |
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259 |
| 1323 | 260 #define NGX_IMAP_LOGIN 1 |
| 261 #define NGX_IMAP_LOGOUT 2 | |
| 262 #define NGX_IMAP_CAPABILITY 3 | |
| 263 #define NGX_IMAP_NOOP 4 | |
| 264 #define NGX_IMAP_STARTTLS 5 | |
| 800 | 265 |
| 1323 | 266 #define NGX_IMAP_NEXT 6 |
| 267 | |
| 268 #define NGX_IMAP_AUTHENTICATE 7 | |
| 527 | 269 |
| 800 | 270 |
| 1323 | 271 #define NGX_SMTP_HELO 1 |
| 272 #define NGX_SMTP_EHLO 2 | |
| 273 #define NGX_SMTP_AUTH 3 | |
| 274 #define NGX_SMTP_QUIT 4 | |
| 275 #define NGX_SMTP_NOOP 5 | |
| 276 #define NGX_SMTP_MAIL 6 | |
| 277 #define NGX_SMTP_RSET 7 | |
| 278 #define NGX_SMTP_RCPT 8 | |
| 279 #define NGX_SMTP_DATA 9 | |
| 280 #define NGX_SMTP_VRFY 10 | |
| 281 #define NGX_SMTP_EXPN 11 | |
| 282 #define NGX_SMTP_HELP 12 | |
| 283 #define NGX_SMTP_STARTTLS 13 | |
| 527 | 284 |
| 285 | |
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286 #define NGX_MAIL_AUTH_PLAIN 0 |
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287 #define NGX_MAIL_AUTH_LOGIN 1 |
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288 #define NGX_MAIL_AUTH_LOGIN_USERNAME 2 |
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289 #define NGX_MAIL_AUTH_APOP 3 |
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290 #define NGX_MAIL_AUTH_CRAM_MD5 4 |
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291 #define NGX_MAIL_AUTH_EXTERNAL 5 |
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292 #define NGX_MAIL_AUTH_NONE 6 |
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293 |
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294 |
| 1136 | 295 #define NGX_MAIL_AUTH_PLAIN_ENABLED 0x0002 |
| 296 #define NGX_MAIL_AUTH_LOGIN_ENABLED 0x0004 | |
| 297 #define NGX_MAIL_AUTH_APOP_ENABLED 0x0008 | |
| 298 #define NGX_MAIL_AUTH_CRAM_MD5_ENABLED 0x0010 | |
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299 #define NGX_MAIL_AUTH_EXTERNAL_ENABLED 0x0020 |
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300 #define NGX_MAIL_AUTH_NONE_ENABLED 0x0040 |
| 521 | 301 |
| 302 | |
| 1136 | 303 #define NGX_MAIL_PARSE_INVALID_COMMAND 20 |
| 521 | 304 |
| 305 | |
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306 typedef void (*ngx_mail_init_session_pt)(ngx_mail_session_t *s, |
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307 ngx_connection_t *c); |
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308 typedef void (*ngx_mail_init_protocol_pt)(ngx_event_t *rev); |
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309 typedef void (*ngx_mail_auth_state_pt)(ngx_event_t *rev); |
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310 typedef ngx_int_t (*ngx_mail_parse_command_pt)(ngx_mail_session_t *s); |
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311 |
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312 |
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313 struct ngx_mail_protocol_s { |
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314 ngx_str_t name; |
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315 in_port_t port[4]; |
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316 ngx_uint_t type; |
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317 |
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318 ngx_mail_init_session_pt init_session; |
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319 ngx_mail_init_protocol_pt init_protocol; |
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320 ngx_mail_parse_command_pt parse_command; |
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321 ngx_mail_auth_state_pt auth_state; |
| 1136 | 322 |
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323 ngx_str_t internal_server_error; |
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324 ngx_str_t cert_error; |
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325 ngx_str_t no_cert; |
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326 }; |
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327 |
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328 |
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329 typedef struct { |
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330 ngx_mail_protocol_t *protocol; |
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331 |
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332 void *(*create_main_conf)(ngx_conf_t *cf); |
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333 char *(*init_main_conf)(ngx_conf_t *cf, void *conf); |
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334 |
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335 void *(*create_srv_conf)(ngx_conf_t *cf); |
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336 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, |
| 6474 | 337 void *conf); |
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338 } ngx_mail_module_t; |
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339 |
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340 |
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341 #define NGX_MAIL_MODULE 0x4C49414D /* "MAIL" */ |
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342 |
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343 #define NGX_MAIL_MAIN_CONF 0x02000000 |
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344 #define NGX_MAIL_SRV_CONF 0x04000000 |
| 1136 | 345 |
| 346 | |
| 347 #define NGX_MAIL_MAIN_CONF_OFFSET offsetof(ngx_mail_conf_ctx_t, main_conf) | |
| 348 #define NGX_MAIL_SRV_CONF_OFFSET offsetof(ngx_mail_conf_ctx_t, srv_conf) | |
| 349 | |
| 350 | |
| 351 #define ngx_mail_get_module_ctx(s, module) (s)->ctx[module.ctx_index] | |
| 352 #define ngx_mail_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; | |
| 353 #define ngx_mail_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; | |
| 521 | 354 |
| 355 | |
| 1136 | 356 #define ngx_mail_get_module_main_conf(s, module) \ |
| 521 | 357 (s)->main_conf[module.ctx_index] |
| 1136 | 358 #define ngx_mail_get_module_srv_conf(s, module) (s)->srv_conf[module.ctx_index] |
|
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359 |
| 1136 | 360 #define ngx_mail_conf_get_module_main_conf(cf, module) \ |
| 361 ((ngx_mail_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] | |
| 1322 | 362 #define ngx_mail_conf_get_module_srv_conf(cf, module) \ |
| 363 ((ngx_mail_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] | |
| 641 | 364 |
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365 |
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366 #if (NGX_MAIL_SSL) |
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367 void ngx_mail_starttls_handler(ngx_event_t *rev); |
| 1479 | 368 ngx_int_t ngx_mail_starttls_only(ngx_mail_session_t *s, ngx_connection_t *c); |
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369 #endif |
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370 |
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371 |
| 1136 | 372 void ngx_mail_init_connection(ngx_connection_t *c); |
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373 |
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374 ngx_int_t ngx_mail_salt(ngx_mail_session_t *s, ngx_connection_t *c, |
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375 ngx_mail_core_srv_conf_t *cscf); |
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376 ngx_int_t ngx_mail_auth_plain(ngx_mail_session_t *s, ngx_connection_t *c, |
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377 ngx_uint_t n); |
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378 ngx_int_t ngx_mail_auth_login_username(ngx_mail_session_t *s, |
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379 ngx_connection_t *c, ngx_uint_t n); |
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380 ngx_int_t ngx_mail_auth_login_password(ngx_mail_session_t *s, |
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381 ngx_connection_t *c); |
| 1479 | 382 ngx_int_t ngx_mail_auth_cram_md5_salt(ngx_mail_session_t *s, |
| 383 ngx_connection_t *c, char *prefix, size_t len); | |
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384 ngx_int_t ngx_mail_auth_cram_md5(ngx_mail_session_t *s, ngx_connection_t *c); |
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385 ngx_int_t ngx_mail_auth_external(ngx_mail_session_t *s, ngx_connection_t *c, |
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386 ngx_uint_t n); |
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387 ngx_int_t ngx_mail_auth_parse(ngx_mail_session_t *s, ngx_connection_t *c); |
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388 |
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389 void ngx_mail_send(ngx_event_t *wev); |
| 1482 | 390 ngx_int_t ngx_mail_read_command(ngx_mail_session_t *s, ngx_connection_t *c); |
| 391 void ngx_mail_auth(ngx_mail_session_t *s, ngx_connection_t *c); | |
| 1136 | 392 void ngx_mail_close_connection(ngx_connection_t *c); |
| 393 void ngx_mail_session_internal_server_error(ngx_mail_session_t *s); | |
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394 u_char *ngx_mail_log_error(ngx_log_t *log, u_char *buf, size_t len); |
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395 |
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396 |
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397 char *ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
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398 |
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417
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399 |
| 521 | 400 /* STUB */ |
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401 void ngx_mail_proxy_init(ngx_mail_session_t *s, ngx_addr_t *peer); |
| 1136 | 402 void ngx_mail_auth_http_init(ngx_mail_session_t *s); |
| 521 | 403 /**/ |
| 404 | |
| 405 | |
| 1136 | 406 extern ngx_uint_t ngx_mail_max_module; |
| 407 extern ngx_module_t ngx_mail_core_module; | |
| 521 | 408 |
| 409 | |
| 1136 | 410 #endif /* _NGX_MAIL_H_INCLUDED_ */ |