Mercurial > hg > nginx
annotate src/mail/ngx_mail_smtp_module.c @ 1892:057d362ee50e
resolver in smtp proxy module
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 13 Feb 2008 13:50:04 +0000 |
parents | f69493e8faab |
children | 4c060e30476b |
rev | line source |
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521 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_event.h> | |
1136 | 10 #include <ngx_mail.h> |
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11 #include <ngx_mail_smtp_module.h> |
521 | 12 |
13 | |
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14 static void *ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf); |
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15 static char *ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, |
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16 void *child); |
527 | 17 |
18 | |
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19 static ngx_conf_bitmask_t ngx_mail_smtp_auth_methods[] = { |
1323 | 20 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
21 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, | |
22 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
23 { ngx_null_string, 0 } | |
24 }; | |
25 | |
26 | |
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27 static ngx_str_t ngx_mail_smtp_auth_methods_names[] = { |
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28 ngx_string("PLAIN"), |
1136 | 29 ngx_string("LOGIN"), |
30 ngx_null_string, /* APOP */ | |
31 ngx_string("CRAM-MD5") | |
32 }; | |
33 | |
34 | |
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35 static ngx_mail_protocol_t ngx_mail_smtp_protocol = { |
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36 ngx_string("smtp"), |
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37 { 25, 465, 587, 0 }, |
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38 NGX_MAIL_SMTP_PROTOCOL, |
809 | 39 |
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40 ngx_mail_smtp_init_session, |
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41 ngx_mail_smtp_init_protocol, |
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42 ngx_mail_smtp_parse_command, |
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43 ngx_mail_smtp_auth_state, |
809 | 44 |
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45 ngx_string("451 4.3.2 Internal server error" CRLF) |
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46 }; |
809 | 47 |
48 | |
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49 static ngx_command_t ngx_mail_smtp_commands[] = { |
521 | 50 |
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51 { ngx_string("smtp_client_buffer"), |
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52 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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53 ngx_conf_set_size_slot, |
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54 NGX_MAIL_SRV_CONF_OFFSET, |
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55 offsetof(ngx_mail_smtp_srv_conf_t, client_buffer_size), |
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56 NULL }, |
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57 |
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58 { ngx_string("smtp_greeting_delay"), |
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59 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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60 ngx_conf_set_msec_slot, |
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61 NGX_MAIL_SRV_CONF_OFFSET, |
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62 offsetof(ngx_mail_smtp_srv_conf_t, greeting_delay), |
1136 | 63 NULL }, |
64 | |
65 { ngx_string("smtp_capabilities"), | |
66 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
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67 ngx_mail_capabilities, |
1136 | 68 NGX_MAIL_SRV_CONF_OFFSET, |
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69 offsetof(ngx_mail_smtp_srv_conf_t, capabilities), |
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70 NULL }, |
1323 | 71 |
1136 | 72 { ngx_string("smtp_auth"), |
73 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
74 ngx_conf_set_bitmask_slot, | |
75 NGX_MAIL_SRV_CONF_OFFSET, | |
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76 offsetof(ngx_mail_smtp_srv_conf_t, auth_methods), |
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77 &ngx_mail_smtp_auth_methods }, |
800 | 78 |
521 | 79 ngx_null_command |
80 }; | |
81 | |
82 | |
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83 static ngx_mail_module_t ngx_mail_smtp_module_ctx = { |
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84 &ngx_mail_smtp_protocol, /* protocol */ |
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85 |
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86 NULL, /* create main configuration */ |
521 | 87 NULL, /* init main configuration */ |
88 | |
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89 ngx_mail_smtp_create_srv_conf, /* create server configuration */ |
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90 ngx_mail_smtp_merge_srv_conf /* merge server configuration */ |
521 | 91 }; |
92 | |
93 | |
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94 ngx_module_t ngx_mail_smtp_module = { |
521 | 95 NGX_MODULE_V1, |
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96 &ngx_mail_smtp_module_ctx, /* module context */ |
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97 ngx_mail_smtp_commands, /* module directives */ |
1136 | 98 NGX_MAIL_MODULE, /* module type */ |
541 | 99 NULL, /* init master */ |
521 | 100 NULL, /* init module */ |
541 | 101 NULL, /* init process */ |
102 NULL, /* init thread */ | |
103 NULL, /* exit thread */ | |
104 NULL, /* exit process */ | |
105 NULL, /* exit master */ | |
106 NGX_MODULE_V1_PADDING | |
521 | 107 }; |
108 | |
109 | |
110 static void * | |
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111 ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf) |
577 | 112 { |
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113 ngx_mail_smtp_srv_conf_t *sscf; |
641 | 114 |
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115 sscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_smtp_srv_conf_t)); |
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116 if (sscf == NULL) { |
527 | 117 return NULL; |
521 | 118 } |
119 | |
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120 sscf->client_buffer_size = NGX_CONF_UNSET_SIZE; |
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121 sscf->greeting_delay = NGX_CONF_UNSET_MSEC; |
521 | 122 |
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123 if (ngx_array_init(&sscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
1136 | 124 != NGX_OK) |
125 { | |
126 return NULL; | |
127 } | |
128 | |
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129 return sscf; |
521 | 130 } |
131 | |
132 | |
133 static char * | |
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134 ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
521 | 135 { |
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136 ngx_mail_smtp_srv_conf_t *prev = parent; |
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137 ngx_mail_smtp_srv_conf_t *conf = child; |
521 | 138 |
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139 u_char *p, *auth; |
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140 size_t size; |
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141 ngx_str_t *c; |
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142 ngx_uint_t i, m; |
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143 ngx_mail_core_srv_conf_t *cscf; |
527 | 144 |
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145 ngx_conf_merge_size_value(conf->client_buffer_size, |
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146 prev->client_buffer_size, |
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147 (size_t) ngx_pagesize); |
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148 |
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149 ngx_conf_merge_msec_value(conf->greeting_delay, |
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150 prev->greeting_delay, 0); |
521 | 151 |
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152 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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153 prev->auth_methods, |
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154 (NGX_CONF_BITMASK_SET |
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155 |NGX_MAIL_AUTH_PLAIN_ENABLED |
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156 |NGX_MAIL_AUTH_LOGIN_ENABLED)); |
800 | 157 |
158 | |
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159 cscf = ngx_mail_conf_get_module_srv_conf(cf, ngx_mail_core_module); |
527 | 160 |
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161 if (cscf->protocol->type == NGX_MAIL_SMTP_PROTOCOL |
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162 && cscf->resolver == NULL) |
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163 { |
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164 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
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165 "undefined resolver for server in %s:%ui", |
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166 cscf->file_name, cscf->line); |
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167 return NGX_CONF_ERROR; |
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168 } |
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169 |
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170 size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len; |
809 | 171 |
583 | 172 p = ngx_palloc(cf->pool, size); |
173 if (p == NULL) { | |
527 | 174 return NGX_CONF_ERROR; |
175 } | |
176 | |
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177 conf->greeting.len = size; |
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178 conf->greeting.data = p; |
527 | 179 |
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180 *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' '; |
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181 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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182 ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1); |
583 | 183 |
184 | |
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185 size = sizeof("250 " CRLF) - 1 + cscf->server_name.len; |
527 | 186 |
583 | 187 p = ngx_palloc(cf->pool, size); |
188 if (p == NULL) { | |
189 return NGX_CONF_ERROR; | |
190 } | |
191 | |
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192 conf->server_name.len = size; |
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193 conf->server_name.data = p; |
583 | 194 |
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195 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
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196 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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197 *p++ = CR; *p = LF; |
527 | 198 |
199 | |
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200 if (conf->capabilities.nelts == 0) { |
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201 conf->capabilities = prev->capabilities; |
1136 | 202 } |
203 | |
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204 size = sizeof("250-") - 1 + cscf->server_name.len + sizeof(CRLF) - 1 |
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205 + sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1; |
1136 | 206 |
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207 c = conf->capabilities.elts; |
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208 for (i = 0; i < conf->capabilities.nelts; i++) { |
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209 size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1; |
527 | 210 } |
211 | |
1323 | 212 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
213 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
214 m <<= 1, i++) | |
215 { | |
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216 if (m & conf->auth_methods) { |
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217 size += 1 + ngx_mail_smtp_auth_methods_names[i].len; |
1323 | 218 } |
219 } | |
220 | |
583 | 221 p = ngx_palloc(cf->pool, size); |
222 if (p == NULL) { | |
223 return NGX_CONF_ERROR; | |
224 } | |
225 | |
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226 conf->capability.len = size; |
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227 conf->capability.data = p; |
1136 | 228 |
229 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; | |
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230 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
1136 | 231 *p++ = CR; *p++ = LF; |
232 | |
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233 for (i = 0; i < conf->capabilities.nelts; i++) { |
1136 | 234 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
235 p = ngx_cpymem(p, c[i].data, c[i].len); | |
236 *p++ = CR; *p++ = LF; | |
237 } | |
238 | |
1322 | 239 auth = p; |
240 | |
1136 | 241 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
242 *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H'; | |
243 | |
244 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; | |
245 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
246 m <<= 1, i++) | |
247 { | |
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248 if (m & conf->auth_methods) { |
1136 | 249 *p++ = ' '; |
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250 p = ngx_cpymem(p, ngx_mail_smtp_auth_methods_names[i].data, |
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251 ngx_mail_smtp_auth_methods_names[i].len); |
1136 | 252 } |
253 } | |
254 | |
255 *p++ = CR; *p = LF; | |
256 | |
1322 | 257 size += sizeof("250 STARTTLS" CRLF) - 1; |
258 | |
259 p = ngx_palloc(cf->pool, size); | |
260 if (p == NULL) { | |
261 return NGX_CONF_ERROR; | |
262 } | |
263 | |
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264 conf->starttls_capability.len = size; |
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265 conf->starttls_capability.data = p; |
1322 | 266 |
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267 p = ngx_cpymem(p, conf->capability.data, |
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268 conf->capability.len); |
1322 | 269 |
270 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
271 *p++ = CR; *p = LF; | |
272 | |
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273 p = conf->starttls_capability.data |
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274 + (auth - conf->capability.data) + 3; |
1322 | 275 *p = '-'; |
276 | |
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277 size = (auth - conf->capability.data) |
1322 | 278 + sizeof("250 STARTTLS" CRLF) - 1; |
279 | |
280 p = ngx_palloc(cf->pool, size); | |
281 if (p == NULL) { | |
282 return NGX_CONF_ERROR; | |
283 } | |
284 | |
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285 conf->starttls_only_capability.len = size; |
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286 conf->starttls_only_capability.data = p; |
1322 | 287 |
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288 p = ngx_cpymem(p, conf->capability.data, |
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289 auth - conf->capability.data); |
1322 | 290 |
291 ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
292 | |
521 | 293 return NGX_CONF_OK; |
294 } |