Mercurial > hg > nginx
annotate src/http/modules/ngx_http_ssl_module.c @ 3154:823f72db46c0
$ssl_session_id
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 24 Sep 2009 14:45:28 +0000 |
parents | ba9a8ba4207e |
children | dd2ae3872634 |
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 | |
2124 | 16 #define NGX_DEFAULT_CIPHERS "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP" |
383
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17 |
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18 |
671 | 19 static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r, |
611 | 20 ngx_http_variable_value_t *v, uintptr_t data); |
671 | 21 static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r, |
647 | 22 ngx_http_variable_value_t *v, uintptr_t data); |
611 | 23 |
24 static ngx_int_t ngx_http_ssl_add_variables(ngx_conf_t *cf); | |
383
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25 static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf); |
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26 static char *ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, |
501 | 27 void *parent, void *child); |
383
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28 |
2224 | 29 static char *ngx_http_ssl_enable(ngx_conf_t *cf, ngx_command_t *cmd, |
30 void *conf); | |
973 | 31 static char *ngx_http_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, |
32 void *conf); | |
33 | |
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34 |
547 | 35 static ngx_conf_bitmask_t ngx_http_ssl_protocols[] = { |
36 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
37 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
38 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
39 { ngx_null_string, 0 } | |
40 }; | |
41 | |
42 | |
2123 | 43 static ngx_conf_enum_t ngx_http_ssl_verify[] = { |
44 { ngx_string("off"), 0 }, | |
45 { ngx_string("on"), 1 }, | |
2994 | 46 { ngx_string("optional"), 2 }, |
2123 | 47 { ngx_null_string, 0 } |
48 }; | |
49 | |
50 | |
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51 static ngx_command_t ngx_http_ssl_commands[] = { |
383
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52 |
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53 { ngx_string("ssl"), |
599 | 54 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, |
2224 | 55 ngx_http_ssl_enable, |
383
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56 NGX_HTTP_SRV_CONF_OFFSET, |
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57 offsetof(ngx_http_ssl_srv_conf_t, enable), |
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58 NULL }, |
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59 |
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60 { ngx_string("ssl_certificate"), |
599 | 61 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
383
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62 ngx_conf_set_str_slot, |
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63 NGX_HTTP_SRV_CONF_OFFSET, |
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64 offsetof(ngx_http_ssl_srv_conf_t, certificate), |
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65 NULL }, |
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66 |
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67 { ngx_string("ssl_certificate_key"), |
599 | 68 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
383
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69 ngx_conf_set_str_slot, |
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70 NGX_HTTP_SRV_CONF_OFFSET, |
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71 offsetof(ngx_http_ssl_srv_conf_t, certificate_key), |
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72 NULL }, |
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73 |
2044 | 74 { ngx_string("ssl_dhparam"), |
75 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, | |
76 ngx_conf_set_str_slot, | |
77 NGX_HTTP_SRV_CONF_OFFSET, | |
78 offsetof(ngx_http_ssl_srv_conf_t, dhparam), | |
79 NULL }, | |
80 | |
547 | 81 { ngx_string("ssl_protocols"), |
563 | 82 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, |
547 | 83 ngx_conf_set_bitmask_slot, |
84 NGX_HTTP_SRV_CONF_OFFSET, | |
85 offsetof(ngx_http_ssl_srv_conf_t, protocols), | |
86 &ngx_http_ssl_protocols }, | |
87 | |
479 | 88 { ngx_string("ssl_ciphers"), |
563 | 89 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
479 | 90 ngx_conf_set_str_slot, |
91 NGX_HTTP_SRV_CONF_OFFSET, | |
92 offsetof(ngx_http_ssl_srv_conf_t, ciphers), | |
93 NULL }, | |
94 | |
647 | 95 { ngx_string("ssl_verify_client"), |
667 | 96 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, |
2123 | 97 ngx_conf_set_enum_slot, |
647 | 98 NGX_HTTP_SRV_CONF_OFFSET, |
99 offsetof(ngx_http_ssl_srv_conf_t, verify), | |
2123 | 100 &ngx_http_ssl_verify }, |
647 | 101 |
102 { ngx_string("ssl_verify_depth"), | |
103 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, | |
104 ngx_conf_set_num_slot, | |
105 NGX_HTTP_SRV_CONF_OFFSET, | |
106 offsetof(ngx_http_ssl_srv_conf_t, verify_depth), | |
107 NULL }, | |
108 | |
109 { ngx_string("ssl_client_certificate"), | |
110 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, | |
111 ngx_conf_set_str_slot, | |
112 NGX_HTTP_SRV_CONF_OFFSET, | |
113 offsetof(ngx_http_ssl_srv_conf_t, client_certificate), | |
114 NULL }, | |
115 | |
547 | 116 { ngx_string("ssl_prefer_server_ciphers"), |
117 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, | |
118 ngx_conf_set_flag_slot, | |
119 NGX_HTTP_SRV_CONF_OFFSET, | |
120 offsetof(ngx_http_ssl_srv_conf_t, prefer_server_ciphers), | |
121 NULL }, | |
122 | |
973 | 123 { ngx_string("ssl_session_cache"), |
124 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE12, | |
125 ngx_http_ssl_session_cache, | |
126 NGX_HTTP_SRV_CONF_OFFSET, | |
127 0, | |
128 NULL }, | |
129 | |
573 | 130 { ngx_string("ssl_session_timeout"), |
131 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, | |
132 ngx_conf_set_sec_slot, | |
133 NGX_HTTP_SRV_CONF_OFFSET, | |
134 offsetof(ngx_http_ssl_srv_conf_t, session_timeout), | |
135 NULL }, | |
136 | |
2995 | 137 { ngx_string("ssl_crl"), |
138 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, | |
139 ngx_conf_set_str_slot, | |
140 NGX_HTTP_SRV_CONF_OFFSET, | |
141 offsetof(ngx_http_ssl_srv_conf_t, crl), | |
142 NULL }, | |
143 | |
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144 ngx_null_command |
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145 }; |
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146 |
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147 |
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148 static ngx_http_module_t ngx_http_ssl_module_ctx = { |
611 | 149 ngx_http_ssl_add_variables, /* preconfiguration */ |
509 | 150 NULL, /* postconfiguration */ |
383
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151 |
541 | 152 NULL, /* create main configuration */ |
153 NULL, /* init main configuration */ | |
383
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154 |
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155 ngx_http_ssl_create_srv_conf, /* create server configuration */ |
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156 ngx_http_ssl_merge_srv_conf, /* merge server configuration */ |
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157 |
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158 NULL, /* create location configuration */ |
485 | 159 NULL /* merge location configuration */ |
383
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160 }; |
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161 |
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162 |
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163 ngx_module_t ngx_http_ssl_module = { |
509 | 164 NGX_MODULE_V1, |
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165 &ngx_http_ssl_module_ctx, /* module context */ |
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166 ngx_http_ssl_commands, /* module directives */ |
383
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167 NGX_HTTP_MODULE, /* module type */ |
541 | 168 NULL, /* init master */ |
393
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169 NULL, /* init module */ |
541 | 170 NULL, /* init process */ |
171 NULL, /* init thread */ | |
172 NULL, /* exit thread */ | |
173 NULL, /* exit process */ | |
174 NULL, /* exit master */ | |
175 NGX_MODULE_V1_PADDING | |
383
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176 }; |
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177 |
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178 |
611 | 179 static ngx_http_variable_t ngx_http_ssl_vars[] = { |
180 | |
671 | 181 { ngx_string("ssl_protocol"), NULL, ngx_http_ssl_static_variable, |
1565 | 182 (uintptr_t) ngx_ssl_get_protocol, NGX_HTTP_VAR_CHANGEABLE, 0 }, |
611 | 183 |
671 | 184 { ngx_string("ssl_cipher"), NULL, ngx_http_ssl_static_variable, |
1565 | 185 (uintptr_t) ngx_ssl_get_cipher_name, NGX_HTTP_VAR_CHANGEABLE, 0 }, |
611 | 186 |
3154 | 187 { ngx_string("ssl_session_id"), NULL, ngx_http_ssl_variable, |
188 (uintptr_t) ngx_ssl_get_session_id, NGX_HTTP_VAR_CHANGEABLE, 0 }, | |
189 | |
2045 | 190 { ngx_string("ssl_client_cert"), NULL, ngx_http_ssl_variable, |
191 (uintptr_t) ngx_ssl_get_certificate, NGX_HTTP_VAR_CHANGEABLE, 0 }, | |
192 | |
2123 | 193 { ngx_string("ssl_client_raw_cert"), NULL, ngx_http_ssl_variable, |
194 (uintptr_t) ngx_ssl_get_raw_certificate, | |
195 NGX_HTTP_VAR_CHANGEABLE, 0 }, | |
196 | |
671 | 197 { ngx_string("ssl_client_s_dn"), NULL, ngx_http_ssl_variable, |
1565 | 198 (uintptr_t) ngx_ssl_get_subject_dn, NGX_HTTP_VAR_CHANGEABLE, 0 }, |
647 | 199 |
671 | 200 { ngx_string("ssl_client_i_dn"), NULL, ngx_http_ssl_variable, |
1565 | 201 (uintptr_t) ngx_ssl_get_issuer_dn, NGX_HTTP_VAR_CHANGEABLE, 0 }, |
671 | 202 |
203 { ngx_string("ssl_client_serial"), NULL, ngx_http_ssl_variable, | |
1565 | 204 (uintptr_t) ngx_ssl_get_serial_number, NGX_HTTP_VAR_CHANGEABLE, 0 }, |
647 | 205 |
2994 | 206 { ngx_string("ssl_client_verify"), NULL, ngx_http_ssl_variable, |
207 (uintptr_t) ngx_ssl_get_client_verify, NGX_HTTP_VAR_CHANGEABLE, 0 }, | |
208 | |
637 | 209 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
611 | 210 }; |
211 | |
212 | |
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213 static ngx_str_t ngx_http_ssl_sess_id_ctx = ngx_string("HTTP"); |
973 | 214 |
215 | |
216 static ngx_int_t | |
671 | 217 ngx_http_ssl_static_variable(ngx_http_request_t *r, |
611 | 218 ngx_http_variable_value_t *v, uintptr_t data) |
219 { | |
671 | 220 ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; |
611 | 221 |
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222 size_t len; |
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223 ngx_str_t s; |
611 | 224 |
225 if (r->connection->ssl) { | |
226 | |
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227 (void) handler(r->connection, NULL, &s); |
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228 |
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229 v->data = s.data; |
611 | 230 |
671 | 231 for (len = 0; v->data[len]; len++) { /* void */ } |
611 | 232 |
233 v->len = len; | |
234 v->valid = 1; | |
1565 | 235 v->no_cacheable = 0; |
611 | 236 v->not_found = 0; |
237 | |
238 return NGX_OK; | |
239 } | |
240 | |
241 v->not_found = 1; | |
242 | |
243 return NGX_OK; | |
244 } | |
245 | |
246 | |
247 static ngx_int_t | |
671 | 248 ngx_http_ssl_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
647 | 249 uintptr_t data) |
250 { | |
671 | 251 ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; |
647 | 252 |
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253 ngx_str_t s; |
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254 |
647 | 255 if (r->connection->ssl) { |
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256 |
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257 if (handler(r->connection, r->pool, &s) != NGX_OK) { |
647 | 258 return NGX_ERROR; |
259 } | |
260 | |
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261 v->len = s.len; |
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262 v->data = s.data; |
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263 |
647 | 264 if (v->len) { |
265 v->valid = 1; | |
1565 | 266 v->no_cacheable = 0; |
647 | 267 v->not_found = 0; |
268 | |
269 return NGX_OK; | |
270 } | |
271 } | |
272 | |
273 v->not_found = 1; | |
274 | |
275 return NGX_OK; | |
276 } | |
277 | |
278 | |
279 static ngx_int_t | |
611 | 280 ngx_http_ssl_add_variables(ngx_conf_t *cf) |
281 { | |
282 ngx_http_variable_t *var, *v; | |
283 | |
284 for (v = ngx_http_ssl_vars; v->name.len; v++) { | |
285 var = ngx_http_add_variable(cf, &v->name, v->flags); | |
286 if (var == NULL) { | |
287 return NGX_ERROR; | |
288 } | |
289 | |
637 | 290 var->get_handler = v->get_handler; |
611 | 291 var->data = v->data; |
292 } | |
293 | |
294 return NGX_OK; | |
295 } | |
296 | |
297 | |
501 | 298 static void * |
299 ngx_http_ssl_create_srv_conf(ngx_conf_t *cf) | |
383
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300 { |
971 | 301 ngx_http_ssl_srv_conf_t *sscf; |
383
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302 |
971 | 303 sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t)); |
304 if (sscf == NULL) { | |
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305 return NULL; |
383
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306 } |
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307 |
479 | 308 /* |
309 * set by ngx_pcalloc(): | |
310 * | |
971 | 311 * sscf->protocols = 0; |
2044 | 312 * sscf->certificate = { 0, NULL }; |
313 * sscf->certificate_key = { 0, NULL }; | |
314 * sscf->dhparam = { 0, NULL }; | |
315 * sscf->client_certificate = { 0, NULL }; | |
2995 | 316 * sscf->crl = { 0, NULL }; |
971 | 317 * sscf->ciphers.len = 0; |
318 * sscf->ciphers.data = NULL; | |
973 | 319 * sscf->shm_zone = NULL; |
479 | 320 */ |
321 | |
971 | 322 sscf->enable = NGX_CONF_UNSET; |
2123 | 323 sscf->prefer_server_ciphers = NGX_CONF_UNSET; |
2710 | 324 sscf->verify = NGX_CONF_UNSET_UINT; |
325 sscf->verify_depth = NGX_CONF_UNSET_UINT; | |
973 | 326 sscf->builtin_session_cache = NGX_CONF_UNSET; |
327 sscf->session_timeout = NGX_CONF_UNSET; | |
383
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328 |
971 | 329 return sscf; |
383
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330 } |
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331 |
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332 |
501 | 333 static char * |
334 ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) | |
383
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335 { |
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336 ngx_http_ssl_srv_conf_t *prev = parent; |
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337 ngx_http_ssl_srv_conf_t *conf = child; |
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338 |
563 | 339 ngx_pool_cleanup_t *cln; |
340 | |
383
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341 ngx_conf_merge_value(conf->enable, prev->enable, 0); |
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342 |
573 | 343 ngx_conf_merge_value(conf->session_timeout, |
344 prev->session_timeout, 300); | |
345 | |
547 | 346 ngx_conf_merge_value(conf->prefer_server_ciphers, |
347 prev->prefer_server_ciphers, 0); | |
348 | |
349 ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols, | |
350 (NGX_CONF_BITMASK_SET | |
351 |NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1)); | |
352 | |
2123 | 353 ngx_conf_merge_uint_value(conf->verify, prev->verify, 0); |
354 ngx_conf_merge_uint_value(conf->verify_depth, prev->verify_depth, 1); | |
647 | 355 |
2224 | 356 ngx_conf_merge_str_value(conf->certificate, prev->certificate, ""); |
357 ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key, ""); | |
383
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358 |
2044 | 359 ngx_conf_merge_str_value(conf->dhparam, prev->dhparam, ""); |
360 | |
647 | 361 ngx_conf_merge_str_value(conf->client_certificate, prev->client_certificate, |
362 ""); | |
2995 | 363 ngx_conf_merge_str_value(conf->crl, prev->crl, ""); |
647 | 364 |
2124 | 365 ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS); |
479 | 366 |
367 | |
547 | 368 conf->ssl.log = cf->log; |
386
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369 |
2224 | 370 if (conf->enable) { |
371 | |
372 if (conf->certificate.len == 0) { | |
373 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
374 "no \"ssl_certificate\" is defined for " | |
375 "the \"ssl\" directive in %s:%ui", | |
376 conf->file, conf->line); | |
377 return NGX_CONF_ERROR; | |
378 } | |
379 | |
380 if (conf->certificate_key.len == 0) { | |
381 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
382 "no \"ssl_certificate_key\" is defined for " | |
383 "the \"ssl\" directive in %s:%ui", | |
384 conf->file, conf->line); | |
385 return NGX_CONF_ERROR; | |
386 } | |
387 | |
388 } else { | |
389 | |
390 if (conf->certificate.len == 0) { | |
391 return NGX_CONF_OK; | |
392 } | |
393 | |
394 if (conf->certificate_key.len == 0) { | |
395 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
396 "no \"ssl_certificate_key\" is defined " | |
397 "for certificate \"%V\"", &conf->certificate); | |
398 return NGX_CONF_ERROR; | |
399 } | |
400 } | |
401 | |
969 | 402 if (ngx_ssl_create(&conf->ssl, conf->protocols, conf) != NGX_OK) { |
386
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403 return NGX_CONF_ERROR; |
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404 } |
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405 |
1219 | 406 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
407 | |
408 if (SSL_CTX_set_tlsext_servername_callback(conf->ssl.ctx, | |
409 ngx_http_ssl_servername) | |
410 == 0) | |
411 { | |
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412 ngx_log_error(NGX_LOG_WARN, cf->log, 0, |
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413 "nginx was build with SNI support, however, now it is linked " |
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414 "dynamically to an OpenSSL library which has no tlsext support, " |
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415 "therefore SNI is not available"); |
1219 | 416 } |
417 | |
418 #endif | |
419 | |
563 | 420 cln = ngx_pool_cleanup_add(cf->pool, 0); |
421 if (cln == NULL) { | |
509 | 422 return NGX_CONF_ERROR; |
423 } | |
424 | |
563 | 425 cln->handler = ngx_ssl_cleanup_ctx; |
426 cln->data = &conf->ssl; | |
427 | |
428 if (ngx_ssl_certificate(cf, &conf->ssl, &conf->certificate, | |
970 | 429 &conf->certificate_key) |
430 != NGX_OK) | |
529 | 431 { |
386
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432 return NGX_CONF_ERROR; |
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433 } |
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434 |
547 | 435 if (SSL_CTX_set_cipher_list(conf->ssl.ctx, |
563 | 436 (const char *) conf->ciphers.data) |
437 == 0) | |
529 | 438 { |
395
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diff
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439 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, |
547 | 440 "SSL_CTX_set_cipher_list(\"%V\") failed", |
441 &conf->ciphers); | |
442 } | |
443 | |
647 | 444 if (conf->verify) { |
2123 | 445 |
446 if (conf->client_certificate.len == 0) { | |
447 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
448 "no ssl_client_certificate for ssl_client_verify"); | |
449 return NGX_CONF_ERROR; | |
450 } | |
451 | |
671 | 452 if (ngx_ssl_client_certificate(cf, &conf->ssl, |
970 | 453 &conf->client_certificate, |
454 conf->verify_depth) | |
671 | 455 != NGX_OK) |
456 { | |
457 return NGX_CONF_ERROR; | |
647 | 458 } |
2995 | 459 |
460 if (ngx_ssl_crl(cf, &conf->ssl, &conf->crl) != NGX_OK) { | |
461 return NGX_CONF_ERROR; | |
462 } | |
647 | 463 } |
464 | |
547 | 465 if (conf->prefer_server_ciphers) { |
466 SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); | |
467 } | |
468 | |
469 /* a temporary 512-bit RSA key is required for export versions of MSIE */ | |
470 if (ngx_ssl_generate_rsa512_key(&conf->ssl) != NGX_OK) { | |
386
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471 return NGX_CONF_ERROR; |
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472 } |
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473 |
2044 | 474 if (ngx_ssl_dhparam(cf, &conf->ssl, &conf->dhparam) != NGX_OK) { |
475 return NGX_CONF_ERROR; | |
476 } | |
477 | |
973 | 478 ngx_conf_merge_value(conf->builtin_session_cache, |
2032 | 479 prev->builtin_session_cache, NGX_SSL_NONE_SCACHE); |
973 | 480 |
481 if (conf->shm_zone == NULL) { | |
482 conf->shm_zone = prev->shm_zone; | |
483 } | |
484 | |
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485 if (ngx_ssl_session_cache(&conf->ssl, &ngx_http_ssl_sess_id_ctx, |
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486 conf->builtin_session_cache, |
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487 conf->shm_zone, conf->session_timeout) |
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488 != NGX_OK) |
973 | 489 { |
974
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490 return NGX_CONF_ERROR; |
973 | 491 } |
573 | 492 |
383
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493 return NGX_CONF_OK; |
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494 } |
563 | 495 |
496 | |
973 | 497 static char * |
2224 | 498 ngx_http_ssl_enable(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
499 { | |
500 ngx_http_ssl_srv_conf_t *sscf = conf; | |
501 | |
502 char *rv; | |
503 | |
504 rv = ngx_conf_set_flag_slot(cf, cmd, conf); | |
505 | |
506 if (rv != NGX_CONF_OK) { | |
507 return rv; | |
508 } | |
509 | |
510 sscf->file = cf->conf_file->file.name.data; | |
511 sscf->line = cf->conf_file->line; | |
512 | |
513 return NGX_CONF_OK; | |
514 } | |
515 | |
516 | |
517 static char * | |
973 | 518 ngx_http_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
519 { | |
520 ngx_http_ssl_srv_conf_t *sscf = conf; | |
521 | |
522 size_t len; | |
523 ngx_str_t *value, name, size; | |
524 ngx_int_t n; | |
525 ngx_uint_t i, j; | |
526 | |
527 value = cf->args->elts; | |
528 | |
529 for (i = 1; i < cf->args->nelts; i++) { | |
530 | |
1778 | 531 if (ngx_strcmp(value[i].data, "off") == 0) { |
532 sscf->builtin_session_cache = NGX_SSL_NO_SCACHE; | |
533 continue; | |
534 } | |
535 | |
2032 | 536 if (ngx_strcmp(value[i].data, "none") == 0) { |
537 sscf->builtin_session_cache = NGX_SSL_NONE_SCACHE; | |
538 continue; | |
539 } | |
540 | |
973 | 541 if (ngx_strcmp(value[i].data, "builtin") == 0) { |
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542 sscf->builtin_session_cache = NGX_SSL_DFLT_BUILTIN_SCACHE; |
973 | 543 continue; |
544 } | |
545 | |
546 if (value[i].len > sizeof("builtin:") - 1 | |
547 && ngx_strncmp(value[i].data, "builtin:", sizeof("builtin:") - 1) | |
548 == 0) | |
549 { | |
550 n = ngx_atoi(value[i].data + sizeof("builtin:") - 1, | |
551 value[i].len - (sizeof("builtin:") - 1)); | |
552 | |
553 if (n == NGX_ERROR) { | |
554 goto invalid; | |
555 } | |
556 | |
557 sscf->builtin_session_cache = n; | |
558 | |
559 continue; | |
560 } | |
561 | |
562 if (value[i].len > sizeof("shared:") - 1 | |
563 && ngx_strncmp(value[i].data, "shared:", sizeof("shared:") - 1) | |
564 == 0) | |
565 { | |
566 len = 0; | |
567 | |
568 for (j = sizeof("shared:") - 1; j < value[i].len; j++) { | |
569 if (value[i].data[j] == ':') { | |
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570 value[i].data[j] = '\0'; |
973 | 571 break; |
572 } | |
573 | |
574 len++; | |
575 } | |
576 | |
577 if (len == 0) { | |
578 goto invalid; | |
579 } | |
580 | |
581 name.len = len; | |
582 name.data = value[i].data + sizeof("shared:") - 1; | |
583 | |
584 size.len = value[i].len - j - 1; | |
585 size.data = name.data + len + 1; | |
586 | |
587 n = ngx_parse_size(&size); | |
588 | |
589 if (n == NGX_ERROR) { | |
590 goto invalid; | |
591 } | |
592 | |
593 if (n < (ngx_int_t) (8 * ngx_pagesize)) { | |
594 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
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595 "session cache \"%V\" is too small", |
973 | 596 &value[i]); |
597 | |
598 return NGX_CONF_ERROR; | |
599 } | |
600 | |
601 sscf->shm_zone = ngx_shared_memory_add(cf, &name, n, | |
602 &ngx_http_ssl_module); | |
603 if (sscf->shm_zone == NULL) { | |
604 return NGX_CONF_ERROR; | |
605 } | |
606 | |
607 continue; | |
608 } | |
609 | |
610 goto invalid; | |
611 } | |
612 | |
613 if (sscf->shm_zone && sscf->builtin_session_cache == NGX_CONF_UNSET) { | |
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614 sscf->builtin_session_cache = NGX_SSL_NO_BUILTIN_SCACHE; |
973 | 615 } |
616 | |
617 return NGX_CONF_OK; | |
618 | |
619 invalid: | |
620 | |
621 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
622 "invalid session cache \"%V\"", &value[i]); | |
623 | |
624 return NGX_CONF_ERROR; | |
625 } |