|
0
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
|
9 #include <ngx_http.h>
|
|
|
10
|
|
122
|
11
|
|
160
|
12 typedef u_char *(*ngx_ssl_variable_handler_pt)(ngx_connection_t *);
|
|
|
13
|
|
|
14
|
|
0
|
15 #define NGX_DEFLAUT_CERTIFICATE "cert.pem"
|
|
|
16 #define NGX_DEFLAUT_CERTIFICATE_KEY "cert.pem"
|
|
96
|
17 #define NGX_DEFLAUT_CIPHERS "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP"
|
|
0
|
18
|
|
|
19
|
|
160
|
20 static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r,
|
|
|
21 ngx_http_variable_value_t *v, uintptr_t data);
|
|
196
|
22 static ngx_int_t ngx_http_ssl_client_s_dn(ngx_http_request_t *r,
|
|
|
23 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
24 static ngx_int_t ngx_http_ssl_client_i_dn(ngx_http_request_t *r,
|
|
|
25 ngx_http_variable_value_t *v, uintptr_t data);
|
|
160
|
26
|
|
|
27 static ngx_int_t ngx_http_ssl_add_variables(ngx_conf_t *cf);
|
|
0
|
28 static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf);
|
|
|
29 static char *ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf,
|
|
50
|
30 void *parent, void *child);
|
|
0
|
31
|
|
112
|
32 #if !defined (SSL_OP_CIPHER_SERVER_PREFERENCE)
|
|
|
33
|
|
|
34 static char *ngx_http_ssl_nosupported(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
35 void *conf);
|
|
|
36
|
|
|
37 static char ngx_http_ssl_openssl097[] = "OpenSSL 0.9.7 and higher";
|
|
|
38
|
|
|
39 #endif
|
|
|
40
|
|
0
|
41
|
|
96
|
42 static ngx_conf_bitmask_t ngx_http_ssl_protocols[] = {
|
|
|
43 { ngx_string("SSLv2"), NGX_SSL_SSLv2 },
|
|
|
44 { ngx_string("SSLv3"), NGX_SSL_SSLv3 },
|
|
|
45 { ngx_string("TLSv1"), NGX_SSL_TLSv1 },
|
|
|
46 { ngx_null_string, 0 }
|
|
|
47 };
|
|
|
48
|
|
|
49
|
|
0
|
50 static ngx_command_t ngx_http_ssl_commands[] = {
|
|
|
51
|
|
|
52 { ngx_string("ssl"),
|
|
148
|
53 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
|
|
0
|
54 ngx_conf_set_flag_slot,
|
|
|
55 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
56 offsetof(ngx_http_ssl_srv_conf_t, enable),
|
|
|
57 NULL },
|
|
|
58
|
|
|
59 { ngx_string("ssl_certificate"),
|
|
148
|
60 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
|
|
0
|
61 ngx_conf_set_str_slot,
|
|
|
62 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
63 offsetof(ngx_http_ssl_srv_conf_t, certificate),
|
|
|
64 NULL },
|
|
|
65
|
|
|
66 { ngx_string("ssl_certificate_key"),
|
|
148
|
67 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
|
|
0
|
68 ngx_conf_set_str_slot,
|
|
|
69 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
70 offsetof(ngx_http_ssl_srv_conf_t, certificate_key),
|
|
|
71 NULL },
|
|
|
72
|
|
96
|
73 { ngx_string("ssl_protocols"),
|
|
112
|
74 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE,
|
|
96
|
75 ngx_conf_set_bitmask_slot,
|
|
|
76 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
77 offsetof(ngx_http_ssl_srv_conf_t, protocols),
|
|
|
78 &ngx_http_ssl_protocols },
|
|
|
79
|
|
28
|
80 { ngx_string("ssl_ciphers"),
|
|
112
|
81 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
|
|
28
|
82 ngx_conf_set_str_slot,
|
|
|
83 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
84 offsetof(ngx_http_ssl_srv_conf_t, ciphers),
|
|
|
85 NULL },
|
|
|
86
|
|
196
|
87 { ngx_string("ssl_verify_client"),
|
|
216
|
88 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
|
|
196
|
89 ngx_conf_set_flag_slot,
|
|
|
90 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
91 offsetof(ngx_http_ssl_srv_conf_t, verify),
|
|
|
92 NULL },
|
|
|
93
|
|
|
94 { ngx_string("ssl_verify_depth"),
|
|
|
95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE,
|
|
|
96 ngx_conf_set_num_slot,
|
|
|
97 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
98 offsetof(ngx_http_ssl_srv_conf_t, verify_depth),
|
|
|
99 NULL },
|
|
|
100
|
|
|
101 { ngx_string("ssl_client_certificate"),
|
|
|
102 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
|
|
|
103 ngx_conf_set_str_slot,
|
|
|
104 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
105 offsetof(ngx_http_ssl_srv_conf_t, client_certificate),
|
|
|
106 NULL },
|
|
|
107
|
|
96
|
108 { ngx_string("ssl_prefer_server_ciphers"),
|
|
|
109 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
|
|
112
|
110 #ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
|
|
96
|
111 ngx_conf_set_flag_slot,
|
|
|
112 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
113 offsetof(ngx_http_ssl_srv_conf_t, prefer_server_ciphers),
|
|
|
114 NULL },
|
|
112
|
115 #else
|
|
|
116 ngx_http_ssl_nosupported, 0, 0, ngx_http_ssl_openssl097 },
|
|
|
117 #endif
|
|
96
|
118
|
|
122
|
119 { ngx_string("ssl_session_timeout"),
|
|
|
120 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
|
|
|
121 ngx_conf_set_sec_slot,
|
|
|
122 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
123 offsetof(ngx_http_ssl_srv_conf_t, session_timeout),
|
|
|
124 NULL },
|
|
|
125
|
|
0
|
126 ngx_null_command
|
|
|
127 };
|
|
|
128
|
|
|
129
|
|
|
130 static ngx_http_module_t ngx_http_ssl_module_ctx = {
|
|
160
|
131 ngx_http_ssl_add_variables, /* preconfiguration */
|
|
58
|
132 NULL, /* postconfiguration */
|
|
0
|
133
|
|
90
|
134 NULL, /* create main configuration */
|
|
|
135 NULL, /* init main configuration */
|
|
0
|
136
|
|
|
137 ngx_http_ssl_create_srv_conf, /* create server configuration */
|
|
|
138 ngx_http_ssl_merge_srv_conf, /* merge server configuration */
|
|
|
139
|
|
|
140 NULL, /* create location configuration */
|
|
34
|
141 NULL /* merge location configuration */
|
|
0
|
142 };
|
|
|
143
|
|
|
144
|
|
|
145 ngx_module_t ngx_http_ssl_module = {
|
|
58
|
146 NGX_MODULE_V1,
|
|
0
|
147 &ngx_http_ssl_module_ctx, /* module context */
|
|
|
148 ngx_http_ssl_commands, /* module directives */
|
|
|
149 NGX_HTTP_MODULE, /* module type */
|
|
90
|
150 NULL, /* init master */
|
|
0
|
151 NULL, /* init module */
|
|
90
|
152 NULL, /* init process */
|
|
|
153 NULL, /* init thread */
|
|
|
154 NULL, /* exit thread */
|
|
|
155 NULL, /* exit process */
|
|
|
156 NULL, /* exit master */
|
|
|
157 NGX_MODULE_V1_PADDING
|
|
0
|
158 };
|
|
|
159
|
|
|
160
|
|
160
|
161 static ngx_http_variable_t ngx_http_ssl_vars[] = {
|
|
|
162
|
|
186
|
163 { ngx_string("ssl_protocol"), NULL, ngx_http_ssl_variable,
|
|
160
|
164 (uintptr_t) ngx_ssl_get_protocol, NGX_HTTP_VAR_CHANGABLE, 0 },
|
|
|
165
|
|
186
|
166 { ngx_string("ssl_cipher"), NULL, ngx_http_ssl_variable,
|
|
160
|
167 (uintptr_t) ngx_ssl_get_cipher_name, NGX_HTTP_VAR_CHANGABLE, 0 },
|
|
|
168
|
|
196
|
169 { ngx_string("ssl_client_s_dn"), NULL, ngx_http_ssl_client_s_dn,
|
|
|
170 0, NGX_HTTP_VAR_CHANGABLE, 0 },
|
|
|
171
|
|
|
172 { ngx_string("ssl_client_i_dn"), NULL, ngx_http_ssl_client_i_dn,
|
|
|
173 0, NGX_HTTP_VAR_CHANGABLE, 0 },
|
|
|
174
|
|
186
|
175 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
160
|
176 };
|
|
|
177
|
|
|
178
|
|
92
|
179 static u_char ngx_http_session_id_ctx[] = "HTTP";
|
|
|
180
|
|
|
181
|
|
160
|
182 static ngx_int_t
|
|
|
183 ngx_http_ssl_variable(ngx_http_request_t *r,
|
|
|
184 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
185 {
|
|
|
186 ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data;
|
|
|
187
|
|
|
188 size_t len;
|
|
|
189 u_char *name;
|
|
|
190
|
|
|
191 if (r->connection->ssl) {
|
|
|
192
|
|
|
193 name = handler(r->connection);
|
|
|
194
|
|
|
195 for (len = 0; name[len]; len++) { /* void */ }
|
|
|
196
|
|
|
197 v->len = len;
|
|
|
198 v->valid = 1;
|
|
|
199 v->no_cachable = 0;
|
|
|
200 v->not_found = 0;
|
|
|
201 v->data = name;
|
|
|
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
|
|
196
|
213 ngx_http_ssl_client_s_dn(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
214 uintptr_t data)
|
|
|
215 {
|
|
|
216 if (r->connection->ssl) {
|
|
|
217 if (ngx_ssl_get_subject_dn(r->connection, r->pool, (ngx_str_t *) v)
|
|
|
218 != NGX_OK)
|
|
|
219 {
|
|
|
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
|
|
|
239 ngx_http_ssl_client_i_dn(ngx_http_request_t *r, ngx_http_variable_value_t *v,
|
|
|
240 uintptr_t data)
|
|
|
241 {
|
|
|
242 if (r->connection->ssl) {
|
|
|
243 if (ngx_ssl_get_issuer_dn(r->connection, r->pool, (ngx_str_t *) v)
|
|
|
244 != NGX_OK)
|
|
|
245 {
|
|
|
246 return NGX_ERROR;
|
|
|
247 }
|
|
|
248
|
|
|
249 if (v->len) {
|
|
|
250 v->valid = 1;
|
|
|
251 v->no_cachable = 0;
|
|
|
252 v->not_found = 0;
|
|
|
253
|
|
|
254 return NGX_OK;
|
|
|
255 }
|
|
|
256 }
|
|
|
257
|
|
|
258 v->not_found = 1;
|
|
|
259
|
|
|
260 return NGX_OK;
|
|
|
261 }
|
|
|
262
|
|
|
263
|
|
|
264 static ngx_int_t
|
|
160
|
265 ngx_http_ssl_add_variables(ngx_conf_t *cf)
|
|
|
266 {
|
|
|
267 ngx_http_variable_t *var, *v;
|
|
|
268
|
|
|
269 for (v = ngx_http_ssl_vars; v->name.len; v++) {
|
|
|
270 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
271 if (var == NULL) {
|
|
|
272 return NGX_ERROR;
|
|
|
273 }
|
|
|
274
|
|
186
|
275 var->get_handler = v->get_handler;
|
|
160
|
276 var->data = v->data;
|
|
|
277 }
|
|
|
278
|
|
|
279 return NGX_OK;
|
|
|
280 }
|
|
|
281
|
|
|
282
|
|
50
|
283 static void *
|
|
|
284 ngx_http_ssl_create_srv_conf(ngx_conf_t *cf)
|
|
0
|
285 {
|
|
|
286 ngx_http_ssl_srv_conf_t *scf;
|
|
|
287
|
|
50
|
288 scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t));
|
|
|
289 if (scf == NULL) {
|
|
0
|
290 return NGX_CONF_ERROR;
|
|
|
291 }
|
|
|
292
|
|
28
|
293 /*
|
|
|
294 * set by ngx_pcalloc():
|
|
|
295 *
|
|
96
|
296 * scf->protocols = 0;
|
|
|
297
|
|
28
|
298 * scf->certificate.len = 0;
|
|
|
299 * scf->certificate.data = NULL;
|
|
|
300 * scf->certificate_key.len = 0;
|
|
|
301 * scf->certificate_key.data = NULL;
|
|
196
|
302 * scf->client_certificate.len = 0;
|
|
|
303 * scf->client_certificate.data = NULL;
|
|
28
|
304 * scf->ciphers.len = 0;
|
|
|
305 * scf->ciphers.data = NULL;
|
|
|
306 */
|
|
|
307
|
|
0
|
308 scf->enable = NGX_CONF_UNSET;
|
|
122
|
309 scf->session_timeout = NGX_CONF_UNSET;
|
|
196
|
310 scf->verify = NGX_CONF_UNSET;
|
|
|
311 scf->verify_depth = NGX_CONF_UNSET;
|
|
96
|
312 scf->prefer_server_ciphers = NGX_CONF_UNSET;
|
|
0
|
313
|
|
|
314 return scf;
|
|
|
315 }
|
|
|
316
|
|
|
317
|
|
50
|
318 static char *
|
|
|
319 ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
0
|
320 {
|
|
|
321 ngx_http_ssl_srv_conf_t *prev = parent;
|
|
|
322 ngx_http_ssl_srv_conf_t *conf = child;
|
|
|
323
|
|
112
|
324 ngx_pool_cleanup_t *cln;
|
|
|
325
|
|
0
|
326 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
|
327
|
|
|
328 if (conf->enable == 0) {
|
|
|
329 return NGX_CONF_OK;
|
|
|
330 }
|
|
|
331
|
|
122
|
332 ngx_conf_merge_value(conf->session_timeout,
|
|
|
333 prev->session_timeout, 300);
|
|
|
334
|
|
96
|
335 ngx_conf_merge_value(conf->prefer_server_ciphers,
|
|
|
336 prev->prefer_server_ciphers, 0);
|
|
|
337
|
|
|
338 ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols,
|
|
|
339 (NGX_CONF_BITMASK_SET
|
|
|
340 |NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1));
|
|
|
341
|
|
196
|
342 ngx_conf_merge_value(conf->verify, prev->verify, 0);
|
|
|
343 ngx_conf_merge_value(conf->verify_depth, prev->verify_depth, 1);
|
|
|
344
|
|
0
|
345 ngx_conf_merge_str_value(conf->certificate, prev->certificate,
|
|
96
|
346 NGX_DEFLAUT_CERTIFICATE);
|
|
0
|
347
|
|
|
348 ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key,
|
|
96
|
349 NGX_DEFLAUT_CERTIFICATE_KEY);
|
|
0
|
350
|
|
196
|
351 ngx_conf_merge_str_value(conf->client_certificate, prev->client_certificate,
|
|
|
352 "");
|
|
|
353
|
|
96
|
354 ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFLAUT_CIPHERS);
|
|
28
|
355
|
|
|
356
|
|
96
|
357 conf->ssl.log = cf->log;
|
|
0
|
358
|
|
96
|
359 if (ngx_ssl_create(&conf->ssl, conf->protocols) != NGX_OK) {
|
|
0
|
360 return NGX_CONF_ERROR;
|
|
|
361 }
|
|
|
362
|
|
112
|
363 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
364 if (cln == NULL) {
|
|
58
|
365 return NGX_CONF_ERROR;
|
|
|
366 }
|
|
|
367
|
|
112
|
368 cln->handler = ngx_ssl_cleanup_ctx;
|
|
|
369 cln->data = &conf->ssl;
|
|
|
370
|
|
|
371 if (ngx_ssl_certificate(cf, &conf->ssl, &conf->certificate,
|
|
|
372 &conf->certificate_key) != NGX_OK)
|
|
78
|
373 {
|
|
0
|
374 return NGX_CONF_ERROR;
|
|
|
375 }
|
|
|
376
|
|
96
|
377 if (SSL_CTX_set_cipher_list(conf->ssl.ctx,
|
|
112
|
378 (const char *) conf->ciphers.data)
|
|
|
379 == 0)
|
|
78
|
380 {
|
|
0
|
381 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0,
|
|
96
|
382 "SSL_CTX_set_cipher_list(\"%V\") failed",
|
|
|
383 &conf->ciphers);
|
|
|
384 }
|
|
|
385
|
|
196
|
386 if (conf->verify) {
|
|
|
387 SSL_CTX_set_verify(conf->ssl.ctx, NGX_SSL_VERIFY, NULL);
|
|
|
388
|
|
|
389 SSL_CTX_set_verify_depth(conf->ssl.ctx, conf->verify_depth);
|
|
|
390
|
|
|
391 if (conf->client_certificate.len) {
|
|
|
392 if (ngx_ssl_client_certificate(cf, &conf->ssl,
|
|
|
393 &conf->client_certificate)
|
|
|
394 != NGX_OK)
|
|
|
395 {
|
|
|
396 return NGX_CONF_ERROR;
|
|
|
397 }
|
|
|
398 }
|
|
|
399 }
|
|
|
400
|
|
112
|
401 #ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
|
|
|
402
|
|
96
|
403 if (conf->prefer_server_ciphers) {
|
|
|
404 SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
|
|
|
405 }
|
|
|
406
|
|
112
|
407 #endif
|
|
|
408
|
|
96
|
409 /* a temporary 512-bit RSA key is required for export versions of MSIE */
|
|
|
410 if (ngx_ssl_generate_rsa512_key(&conf->ssl) != NGX_OK) {
|
|
0
|
411 return NGX_CONF_ERROR;
|
|
|
412 }
|
|
|
413
|
|
96
|
414 SSL_CTX_set_session_cache_mode(conf->ssl.ctx, SSL_SESS_CACHE_SERVER);
|
|
92
|
415
|
|
96
|
416 SSL_CTX_set_session_id_context(conf->ssl.ctx, ngx_http_session_id_ctx,
|
|
92
|
417 sizeof(ngx_http_session_id_ctx) - 1);
|
|
90
|
418
|
|
122
|
419 SSL_CTX_set_timeout(conf->ssl.ctx, conf->session_timeout);
|
|
|
420
|
|
0
|
421 return NGX_CONF_OK;
|
|
|
422 }
|
|
112
|
423
|
|
|
424
|
|
|
425 #if !defined (SSL_OP_CIPHER_SERVER_PREFERENCE)
|
|
|
426
|
|
|
427 static char *
|
|
|
428 ngx_http_ssl_nosupported(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
429 {
|
|
|
430 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
431 "\"%V\" directive is available only in %s,",
|
|
|
432 &cmd->name, cmd->post);
|
|
|
433
|
|
|
434 return NGX_CONF_ERROR;
|
|
|
435 }
|
|
|
436
|
|
|
437 #endif
|
