Mercurial > hg > nginx-quic
annotate src/mail/ngx_mail_smtp_module.c @ 5425:1356a3b96924
SSL: added ability to set keys used for Session Tickets (RFC5077).
In order to support key rollover, ssl_session_ticket_key can be defined
multiple times. The first key will be used to issue and resume Session
Tickets, while the rest will be used only to resume them.
ssl_session_ticket_key session_tickets/current.key;
ssl_session_ticket_key session_tickets/prev-1h.key;
ssl_session_ticket_key session_tickets/prev-2h.key;
Please note that nginx supports Session Tickets even without explicit
configuration of the keys and this feature should be only used in setups
where SSL traffic is distributed across multiple nginx servers.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
| author | Piotr Sikora <piotr@cloudflare.com> |
|---|---|
| date | Fri, 11 Oct 2013 16:05:24 -0700 |
| parents | baa705805138 |
| children | ec01b1d1fff1 |
| rev | line source |
|---|---|
| 521 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 521 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_event.h> | |
| 1136 | 11 #include <ngx_mail.h> |
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12 #include <ngx_mail_smtp_module.h> |
| 521 | 13 |
| 14 | |
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15 static void *ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf); |
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16 static char *ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, |
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17 void *child); |
| 527 | 18 |
| 19 | |
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20 static ngx_conf_bitmask_t ngx_mail_smtp_auth_methods[] = { |
| 1323 | 21 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
| 22 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, | |
| 23 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
| 2309 | 24 { ngx_string("none"), NGX_MAIL_AUTH_NONE_ENABLED }, |
| 1323 | 25 { ngx_null_string, 0 } |
| 26 }; | |
| 27 | |
| 28 | |
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29 static ngx_str_t ngx_mail_smtp_auth_methods_names[] = { |
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30 ngx_string("PLAIN"), |
| 1136 | 31 ngx_string("LOGIN"), |
| 32 ngx_null_string, /* APOP */ | |
| 2309 | 33 ngx_string("CRAM-MD5"), |
| 34 ngx_null_string /* NONE */ | |
| 1136 | 35 }; |
| 36 | |
| 37 | |
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38 static ngx_mail_protocol_t ngx_mail_smtp_protocol = { |
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39 ngx_string("smtp"), |
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40 { 25, 465, 587, 0 }, |
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41 NGX_MAIL_SMTP_PROTOCOL, |
| 809 | 42 |
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43 ngx_mail_smtp_init_session, |
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44 ngx_mail_smtp_init_protocol, |
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45 ngx_mail_smtp_parse_command, |
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46 ngx_mail_smtp_auth_state, |
| 809 | 47 |
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48 ngx_string("451 4.3.2 Internal server error" CRLF) |
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49 }; |
| 809 | 50 |
| 51 | |
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52 static ngx_command_t ngx_mail_smtp_commands[] = { |
| 521 | 53 |
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54 { ngx_string("smtp_client_buffer"), |
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55 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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56 ngx_conf_set_size_slot, |
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57 NGX_MAIL_SRV_CONF_OFFSET, |
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58 offsetof(ngx_mail_smtp_srv_conf_t, client_buffer_size), |
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59 NULL }, |
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60 |
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61 { ngx_string("smtp_greeting_delay"), |
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62 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
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63 ngx_conf_set_msec_slot, |
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64 NGX_MAIL_SRV_CONF_OFFSET, |
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65 offsetof(ngx_mail_smtp_srv_conf_t, greeting_delay), |
| 1136 | 66 NULL }, |
| 67 | |
| 68 { ngx_string("smtp_capabilities"), | |
| 69 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
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70 ngx_mail_capabilities, |
| 1136 | 71 NGX_MAIL_SRV_CONF_OFFSET, |
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72 offsetof(ngx_mail_smtp_srv_conf_t, capabilities), |
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73 NULL }, |
| 1323 | 74 |
| 1136 | 75 { ngx_string("smtp_auth"), |
| 76 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 77 ngx_conf_set_bitmask_slot, | |
| 78 NGX_MAIL_SRV_CONF_OFFSET, | |
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79 offsetof(ngx_mail_smtp_srv_conf_t, auth_methods), |
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80 &ngx_mail_smtp_auth_methods }, |
| 800 | 81 |
| 521 | 82 ngx_null_command |
| 83 }; | |
| 84 | |
| 85 | |
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86 static ngx_mail_module_t ngx_mail_smtp_module_ctx = { |
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87 &ngx_mail_smtp_protocol, /* protocol */ |
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88 |
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89 NULL, /* create main configuration */ |
| 521 | 90 NULL, /* init main configuration */ |
| 91 | |
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92 ngx_mail_smtp_create_srv_conf, /* create server configuration */ |
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93 ngx_mail_smtp_merge_srv_conf /* merge server configuration */ |
| 521 | 94 }; |
| 95 | |
| 96 | |
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97 ngx_module_t ngx_mail_smtp_module = { |
| 521 | 98 NGX_MODULE_V1, |
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99 &ngx_mail_smtp_module_ctx, /* module context */ |
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100 ngx_mail_smtp_commands, /* module directives */ |
| 1136 | 101 NGX_MAIL_MODULE, /* module type */ |
| 541 | 102 NULL, /* init master */ |
| 521 | 103 NULL, /* init module */ |
| 541 | 104 NULL, /* init process */ |
| 105 NULL, /* init thread */ | |
| 106 NULL, /* exit thread */ | |
| 107 NULL, /* exit process */ | |
| 108 NULL, /* exit master */ | |
| 109 NGX_MODULE_V1_PADDING | |
| 521 | 110 }; |
| 111 | |
| 112 | |
| 113 static void * | |
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114 ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf) |
| 577 | 115 { |
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116 ngx_mail_smtp_srv_conf_t *sscf; |
| 641 | 117 |
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118 sscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_smtp_srv_conf_t)); |
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119 if (sscf == NULL) { |
| 527 | 120 return NULL; |
| 521 | 121 } |
| 122 | |
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123 sscf->client_buffer_size = NGX_CONF_UNSET_SIZE; |
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124 sscf->greeting_delay = NGX_CONF_UNSET_MSEC; |
| 521 | 125 |
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126 if (ngx_array_init(&sscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
| 1136 | 127 != NGX_OK) |
| 128 { | |
| 129 return NULL; | |
| 130 } | |
| 131 | |
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132 return sscf; |
| 521 | 133 } |
| 134 | |
| 135 | |
| 136 static char * | |
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137 ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
| 521 | 138 { |
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139 ngx_mail_smtp_srv_conf_t *prev = parent; |
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140 ngx_mail_smtp_srv_conf_t *conf = child; |
| 521 | 141 |
| 2309 | 142 u_char *p, *auth, *last; |
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143 size_t size; |
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144 ngx_str_t *c; |
| 2309 | 145 ngx_uint_t i, m, auth_enabled; |
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146 ngx_mail_core_srv_conf_t *cscf; |
| 527 | 147 |
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148 ngx_conf_merge_size_value(conf->client_buffer_size, |
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149 prev->client_buffer_size, |
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150 (size_t) ngx_pagesize); |
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151 |
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152 ngx_conf_merge_msec_value(conf->greeting_delay, |
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153 prev->greeting_delay, 0); |
| 521 | 154 |
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155 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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156 prev->auth_methods, |
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157 (NGX_CONF_BITMASK_SET |
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158 |NGX_MAIL_AUTH_PLAIN_ENABLED |
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159 |NGX_MAIL_AUTH_LOGIN_ENABLED)); |
| 800 | 160 |
| 161 | |
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162 cscf = ngx_mail_conf_get_module_srv_conf(cf, ngx_mail_core_module); |
| 527 | 163 |
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164 size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len; |
| 809 | 165 |
| 2049 | 166 p = ngx_pnalloc(cf->pool, size); |
| 583 | 167 if (p == NULL) { |
| 527 | 168 return NGX_CONF_ERROR; |
| 169 } | |
| 170 | |
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171 conf->greeting.len = size; |
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172 conf->greeting.data = p; |
| 527 | 173 |
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174 *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' '; |
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175 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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176 ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1); |
| 583 | 177 |
| 178 | |
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179 size = sizeof("250 " CRLF) - 1 + cscf->server_name.len; |
| 527 | 180 |
| 2049 | 181 p = ngx_pnalloc(cf->pool, size); |
| 583 | 182 if (p == NULL) { |
| 183 return NGX_CONF_ERROR; | |
| 184 } | |
| 185 | |
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186 conf->server_name.len = size; |
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187 conf->server_name.data = p; |
| 583 | 188 |
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189 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
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190 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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191 *p++ = CR; *p = LF; |
| 527 | 192 |
| 193 | |
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194 if (conf->capabilities.nelts == 0) { |
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195 conf->capabilities = prev->capabilities; |
| 1136 | 196 } |
| 197 | |
| 2309 | 198 size = sizeof("250-") - 1 + cscf->server_name.len + sizeof(CRLF) - 1; |
| 1136 | 199 |
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200 c = conf->capabilities.elts; |
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201 for (i = 0; i < conf->capabilities.nelts; i++) { |
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202 size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1; |
| 527 | 203 } |
| 204 | |
| 2309 | 205 auth_enabled = 0; |
| 206 | |
| 1323 | 207 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
| 208 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 209 m <<= 1, i++) | |
| 210 { | |
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211 if (m & conf->auth_methods) { |
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212 size += 1 + ngx_mail_smtp_auth_methods_names[i].len; |
| 2309 | 213 auth_enabled = 1; |
| 1323 | 214 } |
| 215 } | |
| 216 | |
| 2309 | 217 if (auth_enabled) { |
| 218 size += sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1; | |
| 219 } | |
| 220 | |
| 2049 | 221 p = ngx_pnalloc(cf->pool, size); |
| 583 | 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 |
| 2309 | 229 last = p; |
| 230 | |
| 1136 | 231 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
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232 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
| 1136 | 233 *p++ = CR; *p++ = LF; |
| 234 | |
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235 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 2309 | 236 last = p; |
| 1136 | 237 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
| 238 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 239 *p++ = CR; *p++ = LF; | |
| 240 } | |
| 241 | |
| 1322 | 242 auth = p; |
| 243 | |
| 2309 | 244 if (auth_enabled) { |
| 245 last = p; | |
| 246 | |
| 247 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; | |
| 248 *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H'; | |
| 1136 | 249 |
| 2309 | 250 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
| 251 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 252 m <<= 1, i++) | |
| 253 { | |
| 254 if (m & conf->auth_methods) { | |
| 255 *p++ = ' '; | |
| 256 p = ngx_cpymem(p, ngx_mail_smtp_auth_methods_names[i].data, | |
| 257 ngx_mail_smtp_auth_methods_names[i].len); | |
| 258 } | |
| 1136 | 259 } |
| 2309 | 260 |
| 261 *p++ = CR; *p = LF; | |
| 1136 | 262 |
| 2309 | 263 } else { |
| 264 last[3] = ' '; | |
| 265 } | |
| 1136 | 266 |
| 1322 | 267 size += sizeof("250 STARTTLS" CRLF) - 1; |
| 268 | |
| 2049 | 269 p = ngx_pnalloc(cf->pool, size); |
| 1322 | 270 if (p == NULL) { |
| 271 return NGX_CONF_ERROR; | |
| 272 } | |
| 273 | |
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274 conf->starttls_capability.len = size; |
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275 conf->starttls_capability.data = p; |
| 1322 | 276 |
| 2309 | 277 p = ngx_cpymem(p, conf->capability.data, conf->capability.len); |
| 1322 | 278 |
| 279 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
| 280 | |
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281 p = conf->starttls_capability.data |
| 2309 | 282 + (last - conf->capability.data) + 3; |
| 1322 | 283 *p = '-'; |
| 284 | |
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285 size = (auth - conf->capability.data) |
| 1322 | 286 + sizeof("250 STARTTLS" CRLF) - 1; |
| 287 | |
| 2049 | 288 p = ngx_pnalloc(cf->pool, size); |
| 1322 | 289 if (p == NULL) { |
| 290 return NGX_CONF_ERROR; | |
| 291 } | |
| 292 | |
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293 conf->starttls_only_capability.len = size; |
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294 conf->starttls_only_capability.data = p; |
| 1322 | 295 |
| 2309 | 296 p = ngx_cpymem(p, conf->capability.data, auth - conf->capability.data); |
| 1322 | 297 |
| 298 ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
| 299 | |
| 2309 | 300 if (last < auth) { |
| 301 p = conf->starttls_only_capability.data | |
| 302 + (last - conf->capability.data) + 3; | |
| 303 *p = '-'; | |
| 304 } | |
| 305 | |
| 521 | 306 return NGX_CONF_OK; |
| 307 } |