Mercurial > hg > nginx
annotate src/mail/ngx_mail_smtp_module.c @ 2049:2a92804f4109
*) back out r2040
*) refactor ngx_palloc()
*) introduce ngx_pnalloc()
*) additional pool blocks have smaller header
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 17 Jun 2008 15:00:30 +0000 |
| parents | 4c060e30476b |
| children | 8156bc03982a |
| rev | line source |
|---|---|
| 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 size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len; |
| 809 | 162 |
| 2049 | 163 p = ngx_pnalloc(cf->pool, size); |
| 583 | 164 if (p == NULL) { |
| 527 | 165 return NGX_CONF_ERROR; |
| 166 } | |
| 167 | |
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168 conf->greeting.len = size; |
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169 conf->greeting.data = p; |
| 527 | 170 |
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171 *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' '; |
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172 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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173 ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1); |
| 583 | 174 |
| 175 | |
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176 size = sizeof("250 " CRLF) - 1 + cscf->server_name.len; |
| 527 | 177 |
| 2049 | 178 p = ngx_pnalloc(cf->pool, size); |
| 583 | 179 if (p == NULL) { |
| 180 return NGX_CONF_ERROR; | |
| 181 } | |
| 182 | |
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183 conf->server_name.len = size; |
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184 conf->server_name.data = p; |
| 583 | 185 |
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186 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
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187 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
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188 *p++ = CR; *p = LF; |
| 527 | 189 |
| 190 | |
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191 if (conf->capabilities.nelts == 0) { |
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192 conf->capabilities = prev->capabilities; |
| 1136 | 193 } |
| 194 | |
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195 size = sizeof("250-") - 1 + cscf->server_name.len + sizeof(CRLF) - 1 |
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196 + sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1; |
| 1136 | 197 |
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198 c = conf->capabilities.elts; |
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199 for (i = 0; i < conf->capabilities.nelts; i++) { |
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200 size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1; |
| 527 | 201 } |
| 202 | |
| 1323 | 203 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
| 204 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 205 m <<= 1, i++) | |
| 206 { | |
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207 if (m & conf->auth_methods) { |
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208 size += 1 + ngx_mail_smtp_auth_methods_names[i].len; |
| 1323 | 209 } |
| 210 } | |
| 211 | |
| 2049 | 212 p = ngx_pnalloc(cf->pool, size); |
| 583 | 213 if (p == NULL) { |
| 214 return NGX_CONF_ERROR; | |
| 215 } | |
| 216 | |
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217 conf->capability.len = size; |
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218 conf->capability.data = p; |
| 1136 | 219 |
| 220 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; | |
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221 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len); |
| 1136 | 222 *p++ = CR; *p++ = LF; |
| 223 | |
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224 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 1136 | 225 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-'; |
| 226 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 227 *p++ = CR; *p++ = LF; | |
| 228 } | |
| 229 | |
| 1322 | 230 auth = p; |
| 231 | |
| 1136 | 232 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' '; |
| 233 *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H'; | |
| 234 | |
| 235 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; | |
| 236 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 237 m <<= 1, i++) | |
| 238 { | |
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239 if (m & conf->auth_methods) { |
| 1136 | 240 *p++ = ' '; |
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241 p = ngx_cpymem(p, ngx_mail_smtp_auth_methods_names[i].data, |
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242 ngx_mail_smtp_auth_methods_names[i].len); |
| 1136 | 243 } |
| 244 } | |
| 245 | |
| 246 *p++ = CR; *p = LF; | |
| 247 | |
| 1322 | 248 size += sizeof("250 STARTTLS" CRLF) - 1; |
| 249 | |
| 2049 | 250 p = ngx_pnalloc(cf->pool, size); |
| 1322 | 251 if (p == NULL) { |
| 252 return NGX_CONF_ERROR; | |
| 253 } | |
| 254 | |
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255 conf->starttls_capability.len = size; |
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256 conf->starttls_capability.data = p; |
| 1322 | 257 |
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258 p = ngx_cpymem(p, conf->capability.data, |
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259 conf->capability.len); |
| 1322 | 260 |
| 261 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
| 262 *p++ = CR; *p = LF; | |
| 263 | |
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264 p = conf->starttls_capability.data |
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265 + (auth - conf->capability.data) + 3; |
| 1322 | 266 *p = '-'; |
| 267 | |
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268 size = (auth - conf->capability.data) |
| 1322 | 269 + sizeof("250 STARTTLS" CRLF) - 1; |
| 270 | |
| 2049 | 271 p = ngx_pnalloc(cf->pool, size); |
| 1322 | 272 if (p == NULL) { |
| 273 return NGX_CONF_ERROR; | |
| 274 } | |
| 275 | |
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276 conf->starttls_only_capability.len = size; |
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277 conf->starttls_only_capability.data = p; |
| 1322 | 278 |
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279 p = ngx_cpymem(p, conf->capability.data, |
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280 auth - conf->capability.data); |
| 1322 | 281 |
| 282 ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1); | |
| 283 | |
| 521 | 284 return NGX_CONF_OK; |
| 285 } |