Mercurial > hg > nginx
annotate src/mail/ngx_mail_pop3_handler.c @ 9068:bf2267887014 quic
QUIC: relocated ngx_quic_init_streams() for 0-RTT.
Previously, streams were initialized in early keys handler. However, client
transport parameters may not be available by then. This happens, for example,
when using QuicTLS. Now streams are initialized in ngx_quic_crypto_input()
after calling SSL_do_handshake() for both 0-RTT and 1-RTT.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Tue, 10 Jan 2023 17:24:10 +0400 |
parents | 815c63581be4 |
children | c690a902bfec |
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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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
1136 | 11 #include <ngx_mail.h> |
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12 #include <ngx_mail_pop3_module.h> |
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14 |
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15 static ngx_int_t ngx_mail_pop3_user(ngx_mail_session_t *s, ngx_connection_t *c); |
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16 static ngx_int_t ngx_mail_pop3_pass(ngx_mail_session_t *s, ngx_connection_t *c); |
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17 static ngx_int_t ngx_mail_pop3_capa(ngx_mail_session_t *s, ngx_connection_t *c, |
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18 ngx_int_t stls); |
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19 static ngx_int_t ngx_mail_pop3_stls(ngx_mail_session_t *s, ngx_connection_t *c); |
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20 static ngx_int_t ngx_mail_pop3_apop(ngx_mail_session_t *s, ngx_connection_t *c); |
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21 static ngx_int_t ngx_mail_pop3_auth(ngx_mail_session_t *s, ngx_connection_t *c); |
539 | 22 |
413
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23 |
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24 static u_char pop3_greeting[] = "+OK POP3 ready" CRLF; |
521 | 25 static u_char pop3_ok[] = "+OK" CRLF; |
809 | 26 static u_char pop3_next[] = "+ " CRLF; |
27 static u_char pop3_username[] = "+ VXNlcm5hbWU6" CRLF; | |
28 static u_char pop3_password[] = "+ UGFzc3dvcmQ6" CRLF; | |
521 | 29 static u_char pop3_invalid_command[] = "-ERR invalid command" CRLF; |
30 | |
31 | |
32 void | |
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33 ngx_mail_pop3_init_session(ngx_mail_session_t *s, ngx_connection_t *c) |
541 | 34 { |
800 | 35 u_char *p; |
1136 | 36 ngx_mail_core_srv_conf_t *cscf; |
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37 ngx_mail_pop3_srv_conf_t *pscf; |
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38 |
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39 pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); |
1136 | 40 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
539 | 41 |
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42 if (pscf->auth_methods |
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43 & (NGX_MAIL_AUTH_APOP_ENABLED|NGX_MAIL_AUTH_CRAM_MD5_ENABLED)) |
800 | 44 { |
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45 if (ngx_mail_salt(s, c, cscf) != NGX_OK) { |
1136 | 46 ngx_mail_session_internal_server_error(s); |
800 | 47 return; |
48 } | |
49 | |
2049 | 50 s->out.data = ngx_pnalloc(c->pool, sizeof(pop3_greeting) + s->salt.len); |
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51 if (s->out.data == NULL) { |
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52 ngx_mail_session_internal_server_error(s); |
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53 return; |
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54 } |
800 | 55 |
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56 p = ngx_cpymem(s->out.data, pop3_greeting, sizeof(pop3_greeting) - 3); |
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57 *p++ = ' '; |
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58 p = ngx_cpymem(p, s->salt.data, s->salt.len); |
800 | 59 |
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60 s->out.len = p - s->out.data; |
800 | 61 |
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62 } else { |
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63 ngx_str_set(&s->out, pop3_greeting); |
800 | 64 } |
65 | |
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66 c->read->handler = ngx_mail_pop3_init_protocol; |
539 | 67 |
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68 ngx_add_timer(c->read, cscf->timeout); |
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69 |
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70 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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71 ngx_mail_close_connection(c); |
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72 } |
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73 |
1136 | 74 ngx_mail_send(c->write); |
539 | 75 } |
76 | |
77 | |
78 void | |
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79 ngx_mail_pop3_init_protocol(ngx_event_t *rev) |
539 | 80 { |
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81 ngx_connection_t *c; |
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82 ngx_mail_session_t *s; |
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83 |
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84 c = rev->data; |
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85 |
541 | 86 c->log->action = "in auth state"; |
87 | |
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88 if (rev->timedout) { |
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89 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
577 | 90 c->timedout = 1; |
1136 | 91 ngx_mail_close_connection(c); |
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92 return; |
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93 } |
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94 |
539 | 95 s = c->data; |
521 | 96 |
419
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97 if (s->buffer == NULL) { |
583 | 98 if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t)) |
99 == NGX_ERROR) | |
100 { | |
1136 | 101 ngx_mail_session_internal_server_error(s); |
583 | 102 return; |
103 } | |
104 | |
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105 s->buffer = ngx_create_temp_buf(c->pool, 128); |
583 | 106 if (s->buffer == NULL) { |
1136 | 107 ngx_mail_session_internal_server_error(s); |
583 | 108 return; |
109 } | |
419
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110 } |
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111 |
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112 s->mail_state = ngx_pop3_start; |
1477 | 113 c->read->handler = ngx_mail_pop3_auth_state; |
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114 |
1477 | 115 ngx_mail_pop3_auth_state(rev); |
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116 } |
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117 |
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118 |
527 | 119 void |
1477 | 120 ngx_mail_pop3_auth_state(ngx_event_t *rev) |
521 | 121 { |
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122 ngx_int_t rc; |
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123 ngx_connection_t *c; |
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124 ngx_mail_session_t *s; |
521 | 125 |
126 c = rev->data; | |
527 | 127 s = c->data; |
521 | 128 |
1136 | 129 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "pop3 auth state"); |
527 | 130 |
131 if (rev->timedout) { | |
132 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); | |
577 | 133 c->timedout = 1; |
1136 | 134 ngx_mail_close_connection(c); |
527 | 135 return; |
136 } | |
137 | |
539 | 138 if (s->out.len) { |
1136 | 139 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "pop3 send handler busy"); |
539 | 140 s->blocked = 1; |
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141 |
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142 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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143 ngx_mail_close_connection(c); |
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144 return; |
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145 } |
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146 |
539 | 147 return; |
148 } | |
149 | |
150 s->blocked = 0; | |
151 | |
1482 | 152 rc = ngx_mail_read_command(s, c); |
1136 | 153 |
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154 if (rc == NGX_AGAIN) { |
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155 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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156 ngx_mail_session_internal_server_error(s); |
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157 return; |
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158 } |
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159 |
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160 return; |
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161 } |
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162 |
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163 if (rc == NGX_ERROR) { |
1136 | 164 return; |
165 } | |
166 | |
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167 ngx_str_set(&s->out, pop3_ok); |
1136 | 168 |
169 if (rc == NGX_OK) { | |
170 switch (s->mail_state) { | |
171 | |
172 case ngx_pop3_start: | |
173 | |
174 switch (s->command) { | |
175 | |
176 case NGX_POP3_USER: | |
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177 rc = ngx_mail_pop3_user(s, c); |
1136 | 178 break; |
179 | |
180 case NGX_POP3_CAPA: | |
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181 rc = ngx_mail_pop3_capa(s, c, 1); |
1136 | 182 break; |
183 | |
184 case NGX_POP3_APOP: | |
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185 rc = ngx_mail_pop3_apop(s, c); |
1136 | 186 break; |
187 | |
188 case NGX_POP3_AUTH: | |
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189 rc = ngx_mail_pop3_auth(s, c); |
1136 | 190 break; |
191 | |
192 case NGX_POP3_QUIT: | |
193 s->quit = 1; | |
194 break; | |
195 | |
196 case NGX_POP3_NOOP: | |
197 break; | |
198 | |
199 case NGX_POP3_STLS: | |
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200 rc = ngx_mail_pop3_stls(s, c); |
1136 | 201 break; |
202 | |
203 default: | |
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204 rc = NGX_MAIL_PARSE_INVALID_COMMAND; |
1136 | 205 break; |
206 } | |
207 | |
208 break; | |
209 | |
210 case ngx_pop3_user: | |
211 | |
212 switch (s->command) { | |
213 | |
214 case NGX_POP3_PASS: | |
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215 rc = ngx_mail_pop3_pass(s, c); |
1136 | 216 break; |
217 | |
218 case NGX_POP3_CAPA: | |
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219 rc = ngx_mail_pop3_capa(s, c, 0); |
1136 | 220 break; |
221 | |
222 case NGX_POP3_QUIT: | |
223 s->quit = 1; | |
224 break; | |
225 | |
226 case NGX_POP3_NOOP: | |
227 break; | |
228 | |
229 default: | |
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230 rc = NGX_MAIL_PARSE_INVALID_COMMAND; |
1136 | 231 break; |
232 } | |
233 | |
234 break; | |
235 | |
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236 /* suppress warnings */ |
1136 | 237 case ngx_pop3_passwd: |
238 break; | |
239 | |
240 case ngx_pop3_auth_login_username: | |
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241 rc = ngx_mail_auth_login_username(s, c, 0); |
1136 | 242 |
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243 ngx_str_set(&s->out, pop3_password); |
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244 s->mail_state = ngx_pop3_auth_login_password; |
1136 | 245 break; |
246 | |
247 case ngx_pop3_auth_login_password: | |
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248 rc = ngx_mail_auth_login_password(s, c); |
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249 break; |
1136 | 250 |
251 case ngx_pop3_auth_plain: | |
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252 rc = ngx_mail_auth_plain(s, c, 0); |
1136 | 253 break; |
254 | |
255 case ngx_pop3_auth_cram_md5: | |
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256 rc = ngx_mail_auth_cram_md5(s, c); |
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257 break; |
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258 |
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259 case ngx_pop3_auth_external: |
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260 rc = ngx_mail_auth_external(s, c, 0); |
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261 break; |
1136 | 262 } |
263 } | |
264 | |
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265 if (s->buffer->pos < s->buffer->last) { |
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266 s->blocked = 1; |
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267 } |
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268 |
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269 switch (rc) { |
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270 |
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271 case NGX_DONE: |
1482 | 272 ngx_mail_auth(s, c); |
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273 return; |
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274 |
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275 case NGX_ERROR: |
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276 ngx_mail_session_internal_server_error(s); |
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277 return; |
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278 |
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279 case NGX_MAIL_PARSE_INVALID_COMMAND: |
1136 | 280 s->mail_state = ngx_pop3_start; |
281 s->state = 0; | |
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282 |
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283 ngx_str_set(&s->out, pop3_invalid_command); |
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284 |
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285 /* fall through */ |
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286 |
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287 case NGX_OK: |
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288 |
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289 s->args.nelts = 0; |
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290 |
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291 if (s->buffer->pos == s->buffer->last) { |
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292 s->buffer->pos = s->buffer->start; |
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293 s->buffer->last = s->buffer->start; |
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294 } |
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295 |
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296 if (s->state) { |
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297 s->arg_start = s->buffer->pos; |
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298 } |
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299 |
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300 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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301 ngx_mail_session_internal_server_error(s); |
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302 return; |
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303 } |
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304 |
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305 ngx_mail_send(c->write); |
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306 } |
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307 } |
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308 |
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309 static ngx_int_t |
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310 ngx_mail_pop3_user(ngx_mail_session_t *s, ngx_connection_t *c) |
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311 { |
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312 ngx_str_t *arg; |
1479 | 313 |
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314 #if (NGX_MAIL_SSL) |
1479 | 315 if (ngx_mail_starttls_only(s, c)) { |
316 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
1136 | 317 } |
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318 #endif |
1136 | 319 |
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320 if (s->args.nelts != 1) { |
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321 return NGX_MAIL_PARSE_INVALID_COMMAND; |
1136 | 322 } |
323 | |
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324 arg = s->args.elts; |
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325 s->login.len = arg[0].len; |
2049 | 326 s->login.data = ngx_pnalloc(c->pool, s->login.len); |
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327 if (s->login.data == NULL) { |
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328 return NGX_ERROR; |
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329 } |
1136 | 330 |
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331 ngx_memcpy(s->login.data, arg[0].data, s->login.len); |
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332 |
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333 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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334 "pop3 login: \"%V\"", &s->login); |
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335 |
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336 s->mail_state = ngx_pop3_user; |
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337 |
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338 return NGX_OK; |
1136 | 339 } |
340 | |
341 | |
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342 static ngx_int_t |
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343 ngx_mail_pop3_pass(ngx_mail_session_t *s, ngx_connection_t *c) |
1136 | 344 { |
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345 ngx_str_t *arg; |
1136 | 346 |
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347 if (s->args.nelts != 1) { |
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348 return NGX_MAIL_PARSE_INVALID_COMMAND; |
527 | 349 } |
350 | |
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351 arg = s->args.elts; |
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352 s->passwd.len = arg[0].len; |
2049 | 353 s->passwd.data = ngx_pnalloc(c->pool, s->passwd.len); |
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354 if (s->passwd.data == NULL) { |
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355 return NGX_ERROR; |
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356 } |
1323 | 357 |
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358 ngx_memcpy(s->passwd.data, arg[0].data, s->passwd.len); |
1323 | 359 |
360 #if (NGX_DEBUG_MAIL_PASSWD) | |
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361 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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362 "pop3 passwd: \"%V\"", &s->passwd); |
1323 | 363 #endif |
364 | |
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365 return NGX_DONE; |
521 | 366 } |
367 | |
368 | |
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369 static ngx_int_t |
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370 ngx_mail_pop3_capa(ngx_mail_session_t *s, ngx_connection_t *c, ngx_int_t stls) |
420
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371 { |
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372 ngx_mail_pop3_srv_conf_t *pscf; |
420
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373 |
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374 pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); |
809 | 375 |
1322 | 376 #if (NGX_MAIL_SSL) |
377 | |
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378 if (stls && c->ssl == NULL) { |
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379 ngx_mail_ssl_conf_t *sslcf; |
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380 |
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381 sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); |
1322 | 382 |
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383 if (sslcf->starttls == NGX_MAIL_STARTTLS_ON) { |
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384 s->out = pscf->starttls_capability; |
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385 return NGX_OK; |
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386 } |
809 | 387 |
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388 if (sslcf->starttls == NGX_MAIL_STARTTLS_ONLY) { |
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389 s->out = pscf->starttls_only_capability; |
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390 return NGX_OK; |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
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391 } |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
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|
392 } |
420
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393 |
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394 #endif |
420
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diff
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395 |
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396 s->out = pscf->capability; |
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397 return NGX_OK; |
417
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diff
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398 } |
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399 |
0526206251f6
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400 |
894
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workaround for Eudora for Mac: it sends
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401 static ngx_int_t |
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402 ngx_mail_pop3_stls(ngx_mail_session_t *s, ngx_connection_t *c) |
894
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403 { |
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404 #if (NGX_MAIL_SSL) |
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405 ngx_mail_ssl_conf_t *sslcf; |
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406 |
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407 if (c->ssl == NULL) { |
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408 sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); |
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409 if (sslcf->starttls) { |
7838
815c63581be4
Mail: POP3 pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
410 s->buffer->pos = s->buffer->start; |
815c63581be4
Mail: POP3 pipelining support.
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411 s->buffer->last = s->buffer->start; |
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412 c->read->handler = ngx_mail_starttls_handler; |
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413 return NGX_OK; |
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414 } |
894
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|
415 } |
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diff
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|
416 |
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|
417 #endif |
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418 |
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419 return NGX_MAIL_PARSE_INVALID_COMMAND; |
855
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851
diff
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|
420 } |
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diff
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|
421 |
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422 |
521 | 423 static ngx_int_t |
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424 ngx_mail_pop3_apop(ngx_mail_session_t *s, ngx_connection_t *c) |
420
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parents:
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diff
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425 { |
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426 ngx_str_t *arg; |
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427 ngx_mail_pop3_srv_conf_t *pscf; |
1479 | 428 |
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429 #if (NGX_MAIL_SSL) |
1479 | 430 if (ngx_mail_starttls_only(s, c)) { |
431 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
539 | 432 } |
433 #endif | |
434 | |
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435 if (s->args.nelts != 2) { |
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436 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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437 } |
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438 |
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
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439 pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); |
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decrement active connection counter in mail proxy
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diff
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440 |
1487
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441 if (!(pscf->auth_methods & NGX_MAIL_AUTH_APOP_ENABLED)) { |
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442 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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443 } |
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444 |
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445 arg = s->args.elts; |
543 | 446 |
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447 s->login.len = arg[0].len; |
2049 | 448 s->login.data = ngx_pnalloc(c->pool, s->login.len); |
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449 if (s->login.data == NULL) { |
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450 return NGX_ERROR; |
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451 } |
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452 |
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453 ngx_memcpy(s->login.data, arg[0].data, s->login.len); |
479 | 454 |
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455 s->passwd.len = arg[1].len; |
2049 | 456 s->passwd.data = ngx_pnalloc(c->pool, s->passwd.len); |
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457 if (s->passwd.data == NULL) { |
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458 return NGX_ERROR; |
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459 } |
479 | 460 |
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461 ngx_memcpy(s->passwd.data, arg[1].data, s->passwd.len); |
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462 |
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463 ngx_log_debug2(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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464 "pop3 apop: \"%V\" \"%V\"", &s->login, &s->passwd); |
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465 |
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466 s->auth_method = NGX_MAIL_AUTH_APOP; |
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467 |
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468 return NGX_DONE; |
417
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469 } |
539 | 470 |
471 | |
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|
472 static ngx_int_t |
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473 ngx_mail_pop3_auth(ngx_mail_session_t *s, ngx_connection_t *c) |
541 | 474 { |
1479 | 475 ngx_int_t rc; |
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|
476 ngx_mail_pop3_srv_conf_t *pscf; |
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477 |
1479 | 478 #if (NGX_MAIL_SSL) |
479 if (ngx_mail_starttls_only(s, c)) { | |
480 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
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481 } |
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482 #endif |
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483 |
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484 pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); |
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485 |
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486 if (s->args.nelts == 0) { |
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487 s->out = pscf->auth_capability; |
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488 s->state = 0; |
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489 |
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|
490 return NGX_OK; |
541 | 491 } |
577 | 492 |
1479 | 493 rc = ngx_mail_auth_parse(s, c); |
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494 |
1479 | 495 switch (rc) { |
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496 |
1479 | 497 case NGX_MAIL_AUTH_LOGIN: |
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|
498 |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
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diff
changeset
|
499 ngx_str_set(&s->out, pop3_username); |
1479 | 500 s->mail_state = ngx_pop3_auth_login_username; |
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501 |
1479 | 502 return NGX_OK; |
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|
503 |
2495
a59b26eee816
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changeset
|
504 case NGX_MAIL_AUTH_LOGIN_USERNAME: |
a59b26eee816
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|
505 |
3516
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ngx_str_set() and ngx_str_null()
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diff
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|
506 ngx_str_set(&s->out, pop3_password); |
2495
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diff
changeset
|
507 s->mail_state = ngx_pop3_auth_login_password; |
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508 |
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509 return ngx_mail_auth_login_username(s, c, 1); |
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510 |
1479 | 511 case NGX_MAIL_AUTH_PLAIN: |
1476
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split pop3, imap, and smtp handlers
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512 |
3516
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ngx_str_set() and ngx_str_null()
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513 ngx_str_set(&s->out, pop3_next); |
1479 | 514 s->mail_state = ngx_pop3_auth_plain; |
541 | 515 |
1479 | 516 return NGX_OK; |
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517 |
1479 | 518 case NGX_MAIL_AUTH_CRAM_MD5: |
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519 |
1487
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
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changeset
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520 if (!(pscf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED)) { |
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521 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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parents:
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522 } |
541 | 523 |
1479 | 524 if (ngx_mail_auth_cram_md5_salt(s, c, "+ ", 2) == NGX_OK) { |
525 s->mail_state = ngx_pop3_auth_cram_md5; | |
526 return NGX_OK; | |
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527 } |
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parents:
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528 |
1479 | 529 return NGX_ERROR; |
6774
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
4499
diff
changeset
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530 |
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
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diff
changeset
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531 case NGX_MAIL_AUTH_EXTERNAL: |
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Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
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diff
changeset
|
532 |
6869
b2915d99ee8d
Mail: make it possible to disable SASL EXTERNAL.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6774
diff
changeset
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533 if (!(pscf->auth_methods & NGX_MAIL_AUTH_EXTERNAL_ENABLED)) { |
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Mail: make it possible to disable SASL EXTERNAL.
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parents:
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changeset
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534 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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parents:
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changeset
|
535 } |
b2915d99ee8d
Mail: make it possible to disable SASL EXTERNAL.
Sergey Kandaurov <pluknet@nginx.com>
parents:
6774
diff
changeset
|
536 |
6774
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
4499
diff
changeset
|
537 ngx_str_set(&s->out, pop3_username); |
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
4499
diff
changeset
|
538 s->mail_state = ngx_pop3_auth_external; |
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
4499
diff
changeset
|
539 |
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
4499
diff
changeset
|
540 return NGX_OK; |
541 | 541 } |
542 | |
1479 | 543 return rc; |
541 | 544 } |