Mercurial > hg > nginx
annotate src/http/modules/ngx_http_ssl_module.c @ 971:948acd940145
style fix: scf > sscf
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 02 Jan 2007 23:50:10 +0000 |
| parents | 35f98a8e275f |
| children | e1ede83911ef |
| rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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10 |
| 573 | 11 |
| 671 | 12 typedef ngx_int_t (*ngx_ssl_variable_handler_pt)(ngx_connection_t *c, |
| 13 ngx_pool_t *pool, ngx_str_t *s); | |
| 611 | 14 |
| 15 | |
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16 #define NGX_DEFLAUT_CERTIFICATE "cert.pem" |
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17 #define NGX_DEFLAUT_CERTIFICATE_KEY "cert.pem" |
| 547 | 18 #define NGX_DEFLAUT_CIPHERS "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP" |
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19 |
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20 |
| 671 | 21 static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r, |
| 611 | 22 ngx_http_variable_value_t *v, uintptr_t data); |
| 671 | 23 static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r, |
| 647 | 24 ngx_http_variable_value_t *v, uintptr_t data); |
| 611 | 25 |
| 26 static ngx_int_t ngx_http_ssl_add_variables(ngx_conf_t *cf); | |
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27 static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf); |
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28 static char *ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, |
| 501 | 29 void *parent, void *child); |
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30 |
| 563 | 31 #if !defined (SSL_OP_CIPHER_SERVER_PREFERENCE) |
| 32 | |
| 33 static char *ngx_http_ssl_nosupported(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 34 void *conf); | |
| 35 | |
| 36 static char ngx_http_ssl_openssl097[] = "OpenSSL 0.9.7 and higher"; | |
| 37 | |
| 38 #endif | |
| 39 | |
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40 |
| 547 | 41 static ngx_conf_bitmask_t ngx_http_ssl_protocols[] = { |
| 42 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
| 43 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
| 44 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
| 45 { ngx_null_string, 0 } | |
| 46 }; | |
| 47 | |
| 48 | |
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49 static ngx_command_t ngx_http_ssl_commands[] = { |
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50 |
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51 { ngx_string("ssl"), |
| 599 | 52 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, |
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53 ngx_conf_set_flag_slot, |
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54 NGX_HTTP_SRV_CONF_OFFSET, |
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55 offsetof(ngx_http_ssl_srv_conf_t, enable), |
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56 NULL }, |
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57 |
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58 { ngx_string("ssl_certificate"), |
| 599 | 59 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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60 ngx_conf_set_str_slot, |
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61 NGX_HTTP_SRV_CONF_OFFSET, |
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62 offsetof(ngx_http_ssl_srv_conf_t, certificate), |
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63 NULL }, |
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64 |
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65 { ngx_string("ssl_certificate_key"), |
| 599 | 66 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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67 ngx_conf_set_str_slot, |
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68 NGX_HTTP_SRV_CONF_OFFSET, |
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69 offsetof(ngx_http_ssl_srv_conf_t, certificate_key), |
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70 NULL }, |
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71 |
| 547 | 72 { ngx_string("ssl_protocols"), |
| 563 | 73 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, |
| 547 | 74 ngx_conf_set_bitmask_slot, |
| 75 NGX_HTTP_SRV_CONF_OFFSET, | |
| 76 offsetof(ngx_http_ssl_srv_conf_t, protocols), | |
| 77 &ngx_http_ssl_protocols }, | |
| 78 | |
| 479 | 79 { ngx_string("ssl_ciphers"), |
| 563 | 80 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
| 479 | 81 ngx_conf_set_str_slot, |
| 82 NGX_HTTP_SRV_CONF_OFFSET, | |
| 83 offsetof(ngx_http_ssl_srv_conf_t, ciphers), | |
| 84 NULL }, | |
| 85 | |
| 647 | 86 { ngx_string("ssl_verify_client"), |
| 667 | 87 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, |
| 647 | 88 ngx_conf_set_flag_slot, |
| 89 NGX_HTTP_SRV_CONF_OFFSET, | |
| 90 offsetof(ngx_http_ssl_srv_conf_t, verify), | |
| 91 NULL }, | |
| 92 | |
| 93 { ngx_string("ssl_verify_depth"), | |
| 94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, | |
| 95 ngx_conf_set_num_slot, | |
| 96 NGX_HTTP_SRV_CONF_OFFSET, | |
| 97 offsetof(ngx_http_ssl_srv_conf_t, verify_depth), | |
| 98 NULL }, | |
| 99 | |
| 100 { ngx_string("ssl_client_certificate"), | |
| 101 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, | |
| 102 ngx_conf_set_str_slot, | |
| 103 NGX_HTTP_SRV_CONF_OFFSET, | |
| 104 offsetof(ngx_http_ssl_srv_conf_t, client_certificate), | |
| 105 NULL }, | |
| 106 | |
| 547 | 107 { ngx_string("ssl_prefer_server_ciphers"), |
| 108 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, | |
| 563 | 109 #ifdef SSL_OP_CIPHER_SERVER_PREFERENCE |
| 547 | 110 ngx_conf_set_flag_slot, |
| 111 NGX_HTTP_SRV_CONF_OFFSET, | |
| 112 offsetof(ngx_http_ssl_srv_conf_t, prefer_server_ciphers), | |
| 113 NULL }, | |
| 563 | 114 #else |
| 115 ngx_http_ssl_nosupported, 0, 0, ngx_http_ssl_openssl097 }, | |
| 116 #endif | |
| 547 | 117 |
| 573 | 118 { ngx_string("ssl_session_timeout"), |
| 119 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, | |
| 120 ngx_conf_set_sec_slot, | |
| 121 NGX_HTTP_SRV_CONF_OFFSET, | |
| 122 offsetof(ngx_http_ssl_srv_conf_t, session_timeout), | |
| 123 NULL }, | |
| 124 | |
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125 ngx_null_command |
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126 }; |
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127 |
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128 |
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129 static ngx_http_module_t ngx_http_ssl_module_ctx = { |
| 611 | 130 ngx_http_ssl_add_variables, /* preconfiguration */ |
| 509 | 131 NULL, /* postconfiguration */ |
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132 |
| 541 | 133 NULL, /* create main configuration */ |
| 134 NULL, /* init main configuration */ | |
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135 |
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136 ngx_http_ssl_create_srv_conf, /* create server configuration */ |
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137 ngx_http_ssl_merge_srv_conf, /* merge server configuration */ |
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138 |
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139 NULL, /* create location configuration */ |
| 485 | 140 NULL /* merge location configuration */ |
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141 }; |
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142 |
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143 |
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144 ngx_module_t ngx_http_ssl_module = { |
| 509 | 145 NGX_MODULE_V1, |
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146 &ngx_http_ssl_module_ctx, /* module context */ |
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147 ngx_http_ssl_commands, /* module directives */ |
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148 NGX_HTTP_MODULE, /* module type */ |
| 541 | 149 NULL, /* init master */ |
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150 NULL, /* init module */ |
| 541 | 151 NULL, /* init process */ |
| 152 NULL, /* init thread */ | |
| 153 NULL, /* exit thread */ | |
| 154 NULL, /* exit process */ | |
| 155 NULL, /* exit master */ | |
| 156 NGX_MODULE_V1_PADDING | |
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157 }; |
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158 |
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159 |
| 611 | 160 static ngx_http_variable_t ngx_http_ssl_vars[] = { |
| 161 | |
| 671 | 162 { ngx_string("ssl_protocol"), NULL, ngx_http_ssl_static_variable, |
| 611 | 163 (uintptr_t) ngx_ssl_get_protocol, NGX_HTTP_VAR_CHANGABLE, 0 }, |
| 164 | |
| 671 | 165 { ngx_string("ssl_cipher"), NULL, ngx_http_ssl_static_variable, |
| 611 | 166 (uintptr_t) ngx_ssl_get_cipher_name, NGX_HTTP_VAR_CHANGABLE, 0 }, |
| 167 | |
| 671 | 168 { ngx_string("ssl_client_s_dn"), NULL, ngx_http_ssl_variable, |
| 169 (uintptr_t) ngx_ssl_get_subject_dn, NGX_HTTP_VAR_CHANGABLE, 0 }, | |
| 647 | 170 |
| 671 | 171 { ngx_string("ssl_client_i_dn"), NULL, ngx_http_ssl_variable, |
| 172 (uintptr_t) ngx_ssl_get_issuer_dn, NGX_HTTP_VAR_CHANGABLE, 0 }, | |
| 173 | |
| 174 { ngx_string("ssl_client_serial"), NULL, ngx_http_ssl_variable, | |
| 175 (uintptr_t) ngx_ssl_get_serial_number, NGX_HTTP_VAR_CHANGABLE, 0 }, | |
| 647 | 176 |
| 637 | 177 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
| 611 | 178 }; |
| 179 | |
| 180 | |
| 543 | 181 static u_char ngx_http_session_id_ctx[] = "HTTP"; |
| 182 | |
| 183 | |
| 611 | 184 static ngx_int_t |
| 671 | 185 ngx_http_ssl_static_variable(ngx_http_request_t *r, |
| 611 | 186 ngx_http_variable_value_t *v, uintptr_t data) |
| 187 { | |
| 671 | 188 ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; |
| 611 | 189 |
| 671 | 190 size_t len; |
| 611 | 191 |
| 192 if (r->connection->ssl) { | |
| 193 | |
| 671 | 194 (void) handler(r->connection, NULL, (ngx_str_t *) v); |
| 611 | 195 |
| 671 | 196 for (len = 0; v->data[len]; len++) { /* void */ } |
| 611 | 197 |
| 198 v->len = len; | |
| 199 v->valid = 1; | |
| 200 v->no_cachable = 0; | |
| 201 v->not_found = 0; | |
| 202 | |
| 203 return NGX_OK; | |
| 204 } | |
| 205 | |
| 206 v->not_found = 1; | |
| 207 | |
| 208 return NGX_OK; | |
| 209 } | |
| 210 | |
| 211 | |
| 212 static ngx_int_t | |
| 671 | 213 ngx_http_ssl_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| 647 | 214 uintptr_t data) |
| 215 { | |
| 671 | 216 ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; |
| 647 | 217 |
| 218 if (r->connection->ssl) { | |
| 671 | 219 if (handler(r->connection, r->pool, (ngx_str_t *) v) != NGX_OK) { |
| 647 | 220 return NGX_ERROR; |
| 221 } | |
| 222 | |
| 223 if (v->len) { | |
| 224 v->valid = 1; | |
| 225 v->no_cachable = 0; | |
| 226 v->not_found = 0; | |
| 227 | |
| 228 return NGX_OK; | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 v->not_found = 1; | |
| 233 | |
| 234 return NGX_OK; | |
| 235 } | |
| 236 | |
| 237 | |
| 238 static ngx_int_t | |
| 611 | 239 ngx_http_ssl_add_variables(ngx_conf_t *cf) |
| 240 { | |
| 241 ngx_http_variable_t *var, *v; | |
| 242 | |
| 243 for (v = ngx_http_ssl_vars; v->name.len; v++) { | |
| 244 var = ngx_http_add_variable(cf, &v->name, v->flags); | |
| 245 if (var == NULL) { | |
| 246 return NGX_ERROR; | |
| 247 } | |
| 248 | |
| 637 | 249 var->get_handler = v->get_handler; |
| 611 | 250 var->data = v->data; |
| 251 } | |
| 252 | |
| 253 return NGX_OK; | |
| 254 } | |
| 255 | |
| 256 | |
| 501 | 257 static void * |
| 258 ngx_http_ssl_create_srv_conf(ngx_conf_t *cf) | |
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259 { |
| 971 | 260 ngx_http_ssl_srv_conf_t *sscf; |
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261 |
| 971 | 262 sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t)); |
| 263 if (sscf == NULL) { | |
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264 return NGX_CONF_ERROR; |
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265 } |
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266 |
| 479 | 267 /* |
| 268 * set by ngx_pcalloc(): | |
| 269 * | |
| 971 | 270 * sscf->protocols = 0; |
| 271 * sscf->certificate.len = 0; | |
| 272 * sscf->certificate.data = NULL; | |
| 273 * sscf->certificate_key.len = 0; | |
| 274 * sscf->certificate_key.data = NULL; | |
| 275 * sscf->client_certificate.len = 0; | |
| 276 * sscf->client_certificate.data = NULL; | |
| 277 * sscf->ciphers.len = 0; | |
| 278 * sscf->ciphers.data = NULL; | |
| 479 | 279 */ |
| 280 | |
| 971 | 281 sscf->enable = NGX_CONF_UNSET; |
| 282 sscf->session_timeout = NGX_CONF_UNSET; | |
| 283 sscf->verify = NGX_CONF_UNSET; | |
| 284 sscf->verify_depth = NGX_CONF_UNSET; | |
| 285 sscf->prefer_server_ciphers = NGX_CONF_UNSET; | |
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286 |
| 971 | 287 return sscf; |
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288 } |
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289 |
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290 |
| 501 | 291 static char * |
| 292 ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) | |
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293 { |
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294 ngx_http_ssl_srv_conf_t *prev = parent; |
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295 ngx_http_ssl_srv_conf_t *conf = child; |
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296 |
| 563 | 297 ngx_pool_cleanup_t *cln; |
| 298 | |
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299 ngx_conf_merge_value(conf->enable, prev->enable, 0); |
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300 |
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393
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301 if (conf->enable == 0) { |
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302 return NGX_CONF_OK; |
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303 } |
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304 |
| 573 | 305 ngx_conf_merge_value(conf->session_timeout, |
| 306 prev->session_timeout, 300); | |
| 307 | |
| 547 | 308 ngx_conf_merge_value(conf->prefer_server_ciphers, |
| 309 prev->prefer_server_ciphers, 0); | |
| 310 | |
| 311 ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols, | |
| 312 (NGX_CONF_BITMASK_SET | |
| 313 |NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1)); | |
| 314 | |
| 647 | 315 ngx_conf_merge_value(conf->verify, prev->verify, 0); |
| 316 ngx_conf_merge_value(conf->verify_depth, prev->verify_depth, 1); | |
| 317 | |
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318 ngx_conf_merge_str_value(conf->certificate, prev->certificate, |
| 547 | 319 NGX_DEFLAUT_CERTIFICATE); |
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320 |
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321 ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key, |
| 547 | 322 NGX_DEFLAUT_CERTIFICATE_KEY); |
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323 |
| 647 | 324 ngx_conf_merge_str_value(conf->client_certificate, prev->client_certificate, |
| 325 ""); | |
| 326 | |
| 547 | 327 ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFLAUT_CIPHERS); |
| 479 | 328 |
| 329 | |
| 547 | 330 conf->ssl.log = cf->log; |
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331 |
| 969 | 332 if (ngx_ssl_create(&conf->ssl, conf->protocols, conf) != NGX_OK) { |
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333 return NGX_CONF_ERROR; |
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334 } |
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335 |
| 563 | 336 cln = ngx_pool_cleanup_add(cf->pool, 0); |
| 337 if (cln == NULL) { | |
| 509 | 338 return NGX_CONF_ERROR; |
| 339 } | |
| 340 | |
| 563 | 341 cln->handler = ngx_ssl_cleanup_ctx; |
| 342 cln->data = &conf->ssl; | |
| 343 | |
| 344 if (ngx_ssl_certificate(cf, &conf->ssl, &conf->certificate, | |
| 970 | 345 &conf->certificate_key) |
| 346 != NGX_OK) | |
| 529 | 347 { |
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348 return NGX_CONF_ERROR; |
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349 } |
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350 |
| 547 | 351 if (SSL_CTX_set_cipher_list(conf->ssl.ctx, |
| 563 | 352 (const char *) conf->ciphers.data) |
| 353 == 0) | |
| 529 | 354 { |
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395
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355 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, |
| 547 | 356 "SSL_CTX_set_cipher_list(\"%V\") failed", |
| 357 &conf->ciphers); | |
| 358 } | |
| 359 | |
| 647 | 360 if (conf->verify) { |
| 671 | 361 if (ngx_ssl_client_certificate(cf, &conf->ssl, |
| 970 | 362 &conf->client_certificate, |
| 363 conf->verify_depth) | |
| 671 | 364 != NGX_OK) |
| 365 { | |
| 366 return NGX_CONF_ERROR; | |
| 647 | 367 } |
| 368 } | |
| 369 | |
| 563 | 370 #ifdef SSL_OP_CIPHER_SERVER_PREFERENCE |
| 371 | |
| 547 | 372 if (conf->prefer_server_ciphers) { |
| 373 SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); | |
| 374 } | |
| 375 | |
| 563 | 376 #endif |
| 377 | |
| 547 | 378 /* a temporary 512-bit RSA key is required for export versions of MSIE */ |
| 379 if (ngx_ssl_generate_rsa512_key(&conf->ssl) != NGX_OK) { | |
|
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380 return NGX_CONF_ERROR; |
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381 } |
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382 |
| 547 | 383 SSL_CTX_set_session_cache_mode(conf->ssl.ctx, SSL_SESS_CACHE_SERVER); |
| 543 | 384 |
| 547 | 385 SSL_CTX_set_session_id_context(conf->ssl.ctx, ngx_http_session_id_ctx, |
| 543 | 386 sizeof(ngx_http_session_id_ctx) - 1); |
| 541 | 387 |
| 573 | 388 SSL_CTX_set_timeout(conf->ssl.ctx, conf->session_timeout); |
| 389 | |
|
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390 return NGX_CONF_OK; |
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391 } |
| 563 | 392 |
| 393 | |
| 394 #if !defined (SSL_OP_CIPHER_SERVER_PREFERENCE) | |
| 395 | |
| 396 static char * | |
| 397 ngx_http_ssl_nosupported(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 398 { | |
| 399 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 400 "\"%V\" directive is available only in %s,", | |
| 401 &cmd->name, cmd->post); | |
| 402 | |
| 403 return NGX_CONF_ERROR; | |
| 404 } | |
| 405 | |
| 406 #endif |