Mercurial > hg > nginx
annotate src/mail/ngx_mail.h @ 9287:32d4582c484d
Mail: fixed EXTERNAL to be accepted only if enabled.
As originally implemented in 6774:bcb107bb89cd, it wasn't possible to
disable the EXTERNAL authentication method: it was always accepted
(but not advertised unless enabled). It is, however, believed that
it is better to reject attempts to use the disabled method, hence in
6869:b2915d99ee8d an attempt was made to address this. This attempt
was insufficient though: it was still possible to use the method as long
as initial SASL response was used.
With this patch both challenge-response and initial response forms are
disabled. Additionally, initial response handling for the PLAIN
authentication is removed from ngx_mail_auth_parse(), for consistency
and to don't provoke such bugs.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 03 Jun 2024 18:03:05 +0300 |
parents | d9a52ebb9b00 |
children | 4538c1ffb0f8 |
rev | line source |
---|---|
441
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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 |
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 | |
417
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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 struct sockaddr *sockaddr; |
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31 socklen_t socklen; |
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32 ngx_str_t addr_text; |
641 | 33 |
34 /* server ctx */ | |
1136 | 35 ngx_mail_conf_ctx_t *ctx; |
641 | 36 |
37 unsigned bind:1; | |
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38 unsigned wildcard:1; |
2224 | 39 unsigned ssl:1; |
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40 #if (NGX_HAVE_INET6) |
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41 unsigned ipv6only:1; |
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42 #endif |
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43 unsigned so_keepalive:2; |
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44 unsigned proxy_protocol:1; |
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45 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
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46 int tcp_keepidle; |
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47 int tcp_keepintvl; |
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48 int tcp_keepcnt; |
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49 #endif |
6173 | 50 int backlog; |
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51 int rcvbuf; |
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52 int sndbuf; |
1136 | 53 } ngx_mail_listen_t; |
641 | 54 |
55 | |
56 typedef struct { | |
1136 | 57 ngx_mail_conf_ctx_t *ctx; |
641 | 58 ngx_str_t addr_text; |
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59 unsigned ssl:1; |
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60 unsigned proxy_protocol:1; |
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61 } ngx_mail_addr_conf_t; |
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62 |
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63 typedef struct { |
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64 in_addr_t addr; |
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65 ngx_mail_addr_conf_t conf; |
1136 | 66 } ngx_mail_in_addr_t; |
641 | 67 |
68 | |
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69 #if (NGX_HAVE_INET6) |
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70 |
641 | 71 typedef struct { |
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72 struct in6_addr addr6; |
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73 ngx_mail_addr_conf_t conf; |
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74 } ngx_mail_in6_addr_t; |
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75 |
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76 #endif |
641 | 77 |
78 | |
79 typedef struct { | |
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80 /* ngx_mail_in_addr_t or ngx_mail_in6_addr_t */ |
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81 void *addrs; |
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82 ngx_uint_t naddrs; |
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83 } ngx_mail_port_t; |
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84 |
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85 |
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86 typedef struct { |
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87 int family; |
641 | 88 in_port_t port; |
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89 ngx_array_t addrs; /* array of ngx_mail_conf_addr_t */ |
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90 } ngx_mail_conf_port_t; |
641 | 91 |
92 | |
93 typedef struct { | |
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94 ngx_mail_listen_t opt; |
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95 } ngx_mail_conf_addr_t; |
641 | 96 |
97 | |
98 typedef struct { | |
1136 | 99 ngx_array_t servers; /* ngx_mail_core_srv_conf_t */ |
100 ngx_array_t listen; /* ngx_mail_listen_t */ | |
101 } ngx_mail_core_main_conf_t; | |
521 | 102 |
103 | |
1136 | 104 #define NGX_MAIL_POP3_PROTOCOL 0 |
105 #define NGX_MAIL_IMAP_PROTOCOL 1 | |
106 #define NGX_MAIL_SMTP_PROTOCOL 2 | |
521 | 107 |
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108 |
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109 typedef struct ngx_mail_protocol_s ngx_mail_protocol_t; |
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110 |
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111 |
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112 typedef struct { |
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113 ngx_mail_protocol_t *protocol; |
521 | 114 |
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115 ngx_msec_t timeout; |
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116 ngx_msec_t resolver_timeout; |
521 | 117 |
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118 ngx_uint_t max_errors; |
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119 ngx_uint_t max_commands; |
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120 |
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121 ngx_str_t server_name; |
527 | 122 |
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123 u_char *file_name; |
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124 ngx_uint_t line; |
527 | 125 |
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126 ngx_resolver_t *resolver; |
6130 | 127 ngx_log_t *error_log; |
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128 |
521 | 129 /* server ctx */ |
1136 | 130 ngx_mail_conf_ctx_t *ctx; |
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131 |
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132 ngx_uint_t listen; /* unsigned listen:1; */ |
1136 | 133 } ngx_mail_core_srv_conf_t; |
521 | 134 |
135 | |
527 | 136 typedef enum { |
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137 ngx_pop3_start = 0, |
527 | 138 ngx_pop3_user, |
809 | 139 ngx_pop3_passwd, |
140 ngx_pop3_auth_login_username, | |
141 ngx_pop3_auth_login_password, | |
142 ngx_pop3_auth_plain, | |
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143 ngx_pop3_auth_cram_md5, |
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144 ngx_pop3_auth_external |
1673 | 145 } ngx_pop3_state_e; |
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146 |
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147 |
1136 | 148 typedef enum { |
149 ngx_imap_start = 0, | |
1323 | 150 ngx_imap_auth_login_username, |
151 ngx_imap_auth_login_password, | |
152 ngx_imap_auth_plain, | |
153 ngx_imap_auth_cram_md5, | |
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154 ngx_imap_auth_external, |
1136 | 155 ngx_imap_login, |
156 ngx_imap_user, | |
157 ngx_imap_passwd | |
158 } ngx_imap_state_e; | |
159 | |
160 | |
161 typedef enum { | |
162 ngx_smtp_start = 0, | |
163 ngx_smtp_auth_login_username, | |
164 ngx_smtp_auth_login_password, | |
165 ngx_smtp_auth_plain, | |
166 ngx_smtp_auth_cram_md5, | |
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167 ngx_smtp_auth_external, |
1136 | 168 ngx_smtp_helo, |
2309 | 169 ngx_smtp_helo_xclient, |
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170 ngx_smtp_helo_auth, |
2309 | 171 ngx_smtp_helo_from, |
172 ngx_smtp_xclient, | |
173 ngx_smtp_xclient_from, | |
2497 | 174 ngx_smtp_xclient_helo, |
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175 ngx_smtp_xclient_auth, |
2309 | 176 ngx_smtp_from, |
177 ngx_smtp_to | |
1136 | 178 } ngx_smtp_state_e; |
179 | |
180 | |
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181 typedef struct { |
521 | 182 ngx_peer_connection_t upstream; |
183 ngx_buf_t *buffer; | |
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184 ngx_uint_t proxy_protocol; /* unsigned proxy_protocol:1; */ |
1136 | 185 } ngx_mail_proxy_ctx_t; |
521 | 186 |
187 | |
188 typedef struct { | |
1136 | 189 uint32_t signature; /* "MAIL" */ |
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190 |
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191 ngx_connection_t *connection; |
521 | 192 |
539 | 193 ngx_str_t out; |
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194 ngx_buf_t *buffer; |
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195 |
521 | 196 void **ctx; |
197 void **main_conf; | |
198 void **srv_conf; | |
199 | |
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200 ngx_resolver_ctx_t *resolver_ctx; |
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201 |
1136 | 202 ngx_mail_proxy_ctx_t *proxy; |
521 | 203 |
1136 | 204 ngx_uint_t mail_state; |
421
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205 |
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206 unsigned ssl:1; |
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207 unsigned protocol:3; |
539 | 208 unsigned blocked:1; |
209 unsigned quit:1; | |
527 | 210 unsigned quoted:1; |
543 | 211 unsigned backslash:1; |
212 unsigned no_sync_literal:1; | |
641 | 213 unsigned starttls:1; |
1136 | 214 unsigned esmtp:1; |
2309 | 215 unsigned auth_method:3; |
883 | 216 unsigned auth_wait:1; |
418
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217 |
422
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218 ngx_str_t login; |
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219 ngx_str_t passwd; |
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220 |
800 | 221 ngx_str_t salt; |
527 | 222 ngx_str_t tag; |
539 | 223 ngx_str_t tagged_line; |
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224 ngx_str_t text; |
527 | 225 |
641 | 226 ngx_str_t *addr_text; |
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227 ngx_str_t host; |
1136 | 228 ngx_str_t smtp_helo; |
2309 | 229 ngx_str_t smtp_from; |
230 ngx_str_t smtp_to; | |
641 | 231 |
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232 ngx_str_t cmd; |
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233 |
419
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234 ngx_uint_t command; |
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235 ngx_array_t args; |
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236 |
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237 ngx_uint_t errors; |
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238 ngx_uint_t commands; |
527 | 239 ngx_uint_t login_attempt; |
240 | |
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241 /* used to parse POP3/IMAP/SMTP command */ |
419
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242 |
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243 ngx_uint_t state; |
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244 u_char *tag_start; |
527 | 245 u_char *cmd_start; |
419
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246 u_char *arg_start; |
527 | 247 ngx_uint_t literal_len; |
1136 | 248 } ngx_mail_session_t; |
418
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249 |
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250 |
541 | 251 typedef struct { |
583 | 252 ngx_str_t *client; |
1136 | 253 ngx_mail_session_t *session; |
254 } ngx_mail_log_ctx_t; | |
541 | 255 |
256 | |
1323 | 257 #define NGX_POP3_USER 1 |
258 #define NGX_POP3_PASS 2 | |
259 #define NGX_POP3_CAPA 3 | |
260 #define NGX_POP3_QUIT 4 | |
261 #define NGX_POP3_NOOP 5 | |
262 #define NGX_POP3_STLS 6 | |
263 #define NGX_POP3_APOP 7 | |
264 #define NGX_POP3_AUTH 8 | |
265 #define NGX_POP3_STAT 9 | |
266 #define NGX_POP3_LIST 10 | |
267 #define NGX_POP3_RETR 11 | |
268 #define NGX_POP3_DELE 12 | |
269 #define NGX_POP3_RSET 13 | |
270 #define NGX_POP3_TOP 14 | |
271 #define NGX_POP3_UIDL 15 | |
419
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272 |
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273 |
1323 | 274 #define NGX_IMAP_LOGIN 1 |
275 #define NGX_IMAP_LOGOUT 2 | |
276 #define NGX_IMAP_CAPABILITY 3 | |
277 #define NGX_IMAP_NOOP 4 | |
278 #define NGX_IMAP_STARTTLS 5 | |
800 | 279 |
1323 | 280 #define NGX_IMAP_NEXT 6 |
281 | |
282 #define NGX_IMAP_AUTHENTICATE 7 | |
527 | 283 |
800 | 284 |
1323 | 285 #define NGX_SMTP_HELO 1 |
286 #define NGX_SMTP_EHLO 2 | |
287 #define NGX_SMTP_AUTH 3 | |
288 #define NGX_SMTP_QUIT 4 | |
289 #define NGX_SMTP_NOOP 5 | |
290 #define NGX_SMTP_MAIL 6 | |
291 #define NGX_SMTP_RSET 7 | |
292 #define NGX_SMTP_RCPT 8 | |
293 #define NGX_SMTP_DATA 9 | |
294 #define NGX_SMTP_VRFY 10 | |
295 #define NGX_SMTP_EXPN 11 | |
296 #define NGX_SMTP_HELP 12 | |
297 #define NGX_SMTP_STARTTLS 13 | |
527 | 298 |
299 | |
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300 #define NGX_MAIL_AUTH_PLAIN 0 |
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301 #define NGX_MAIL_AUTH_LOGIN 1 |
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302 #define NGX_MAIL_AUTH_LOGIN_USERNAME 2 |
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303 #define NGX_MAIL_AUTH_APOP 3 |
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304 #define NGX_MAIL_AUTH_CRAM_MD5 4 |
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305 #define NGX_MAIL_AUTH_EXTERNAL 5 |
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306 #define NGX_MAIL_AUTH_NONE 6 |
419
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307 |
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308 |
1136 | 309 #define NGX_MAIL_AUTH_PLAIN_ENABLED 0x0002 |
310 #define NGX_MAIL_AUTH_LOGIN_ENABLED 0x0004 | |
311 #define NGX_MAIL_AUTH_APOP_ENABLED 0x0008 | |
312 #define NGX_MAIL_AUTH_CRAM_MD5_ENABLED 0x0010 | |
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313 #define NGX_MAIL_AUTH_EXTERNAL_ENABLED 0x0020 |
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314 #define NGX_MAIL_AUTH_NONE_ENABLED 0x0040 |
521 | 315 |
316 | |
1136 | 317 #define NGX_MAIL_PARSE_INVALID_COMMAND 20 |
521 | 318 |
319 | |
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320 typedef void (*ngx_mail_init_session_pt)(ngx_mail_session_t *s, |
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321 ngx_connection_t *c); |
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322 typedef void (*ngx_mail_init_protocol_pt)(ngx_event_t *rev); |
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323 typedef void (*ngx_mail_auth_state_pt)(ngx_event_t *rev); |
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324 typedef ngx_int_t (*ngx_mail_parse_command_pt)(ngx_mail_session_t *s); |
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325 |
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326 |
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327 struct ngx_mail_protocol_s { |
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328 ngx_str_t name; |
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329 ngx_str_t alpn; |
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330 in_port_t port[4]; |
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331 ngx_uint_t type; |
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332 |
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333 ngx_mail_init_session_pt init_session; |
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334 ngx_mail_init_protocol_pt init_protocol; |
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335 ngx_mail_parse_command_pt parse_command; |
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336 ngx_mail_auth_state_pt auth_state; |
1136 | 337 |
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338 ngx_str_t internal_server_error; |
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339 ngx_str_t cert_error; |
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340 ngx_str_t no_cert; |
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341 }; |
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342 |
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343 |
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344 typedef struct { |
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345 ngx_mail_protocol_t *protocol; |
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346 |
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347 void *(*create_main_conf)(ngx_conf_t *cf); |
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348 char *(*init_main_conf)(ngx_conf_t *cf, void *conf); |
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349 |
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350 void *(*create_srv_conf)(ngx_conf_t *cf); |
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351 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, |
6474 | 352 void *conf); |
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353 } ngx_mail_module_t; |
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354 |
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355 |
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356 #define NGX_MAIL_MODULE 0x4C49414D /* "MAIL" */ |
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357 |
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358 #define NGX_MAIL_MAIN_CONF 0x02000000 |
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359 #define NGX_MAIL_SRV_CONF 0x04000000 |
1136 | 360 |
361 | |
362 #define NGX_MAIL_MAIN_CONF_OFFSET offsetof(ngx_mail_conf_ctx_t, main_conf) | |
363 #define NGX_MAIL_SRV_CONF_OFFSET offsetof(ngx_mail_conf_ctx_t, srv_conf) | |
364 | |
365 | |
366 #define ngx_mail_get_module_ctx(s, module) (s)->ctx[module.ctx_index] | |
367 #define ngx_mail_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; | |
368 #define ngx_mail_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; | |
521 | 369 |
370 | |
1136 | 371 #define ngx_mail_get_module_main_conf(s, module) \ |
521 | 372 (s)->main_conf[module.ctx_index] |
1136 | 373 #define ngx_mail_get_module_srv_conf(s, module) (s)->srv_conf[module.ctx_index] |
423
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374 |
1136 | 375 #define ngx_mail_conf_get_module_main_conf(cf, module) \ |
376 ((ngx_mail_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] | |
1322 | 377 #define ngx_mail_conf_get_module_srv_conf(cf, module) \ |
378 ((ngx_mail_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] | |
641 | 379 |
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380 |
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381 #if (NGX_MAIL_SSL) |
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382 void ngx_mail_starttls_handler(ngx_event_t *rev); |
1479 | 383 ngx_int_t ngx_mail_starttls_only(ngx_mail_session_t *s, ngx_connection_t *c); |
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384 #endif |
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385 |
423
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386 |
1136 | 387 void ngx_mail_init_connection(ngx_connection_t *c); |
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388 |
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389 ngx_int_t ngx_mail_salt(ngx_mail_session_t *s, ngx_connection_t *c, |
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390 ngx_mail_core_srv_conf_t *cscf); |
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391 ngx_int_t ngx_mail_auth_plain(ngx_mail_session_t *s, ngx_connection_t *c, |
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392 ngx_uint_t n); |
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393 ngx_int_t ngx_mail_auth_login_username(ngx_mail_session_t *s, |
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394 ngx_connection_t *c, ngx_uint_t n); |
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395 ngx_int_t ngx_mail_auth_login_password(ngx_mail_session_t *s, |
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396 ngx_connection_t *c); |
1479 | 397 ngx_int_t ngx_mail_auth_cram_md5_salt(ngx_mail_session_t *s, |
398 ngx_connection_t *c, char *prefix, size_t len); | |
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399 ngx_int_t ngx_mail_auth_cram_md5(ngx_mail_session_t *s, ngx_connection_t *c); |
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400 ngx_int_t ngx_mail_auth_external(ngx_mail_session_t *s, ngx_connection_t *c, |
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401 ngx_uint_t n); |
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402 ngx_int_t ngx_mail_auth_parse(ngx_mail_session_t *s, ngx_connection_t *c); |
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403 |
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404 void ngx_mail_send(ngx_event_t *wev); |
1482 | 405 ngx_int_t ngx_mail_read_command(ngx_mail_session_t *s, ngx_connection_t *c); |
406 void ngx_mail_auth(ngx_mail_session_t *s, ngx_connection_t *c); | |
1136 | 407 void ngx_mail_close_connection(ngx_connection_t *c); |
408 void ngx_mail_session_internal_server_error(ngx_mail_session_t *s); | |
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409 u_char *ngx_mail_log_error(ngx_log_t *log, u_char *buf, size_t len); |
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410 |
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411 |
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412 char *ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
419
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413 |
417
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414 |
521 | 415 /* STUB */ |
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416 void ngx_mail_proxy_init(ngx_mail_session_t *s, ngx_addr_t *peer); |
1136 | 417 void ngx_mail_auth_http_init(ngx_mail_session_t *s); |
7795 | 418 ngx_int_t ngx_mail_realip_handler(ngx_mail_session_t *s); |
521 | 419 /**/ |
420 | |
421 | |
1136 | 422 extern ngx_uint_t ngx_mail_max_module; |
423 extern ngx_module_t ngx_mail_core_module; | |
521 | 424 |
425 | |
1136 | 426 #endif /* _NGX_MAIL_H_INCLUDED_ */ |