|
0
|
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>
|
|
|
10
|
|
90
|
11
|
|
|
12 typedef struct {
|
|
|
13 ngx_str_t engine;
|
|
|
14 } ngx_openssl_conf_t;
|
|
28
|
15
|
|
0
|
16
|
|
96
|
17 static void ngx_ssl_handshake_handler(ngx_event_t *ev);
|
|
38
|
18 static ngx_int_t ngx_ssl_handle_recv(ngx_connection_t *c, int n);
|
|
22
|
19 static void ngx_ssl_write_handler(ngx_event_t *wev);
|
|
|
20 static void ngx_ssl_read_handler(ngx_event_t *rev);
|
|
126
|
21 static void ngx_ssl_shutdown_handler(ngx_event_t *ev);
|
|
96
|
22 static void ngx_ssl_connection_error(ngx_connection_t *c, int sslerr,
|
|
|
23 ngx_err_t err, char *text);
|
|
90
|
24 static void *ngx_openssl_create_conf(ngx_cycle_t *cycle);
|
|
|
25 static char *ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf);
|
|
120
|
26 static void ngx_openssl_exit(ngx_cycle_t *cycle);
|
|
90
|
27
|
|
|
28 #if !(NGX_SSL_ENGINE)
|
|
|
29 static char *ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
30 void *conf);
|
|
|
31 #endif
|
|
|
32
|
|
|
33
|
|
|
34 static ngx_command_t ngx_openssl_commands[] = {
|
|
|
35
|
|
|
36 { ngx_string("ssl_engine"),
|
|
|
37 NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1,
|
|
|
38 #if (NGX_SSL_ENGINE)
|
|
|
39 ngx_conf_set_str_slot,
|
|
|
40 #else
|
|
|
41 ngx_openssl_noengine,
|
|
|
42 #endif
|
|
|
43 0,
|
|
|
44 offsetof(ngx_openssl_conf_t, engine),
|
|
|
45 NULL },
|
|
|
46
|
|
|
47 ngx_null_command
|
|
|
48 };
|
|
|
49
|
|
|
50
|
|
|
51 static ngx_core_module_t ngx_openssl_module_ctx = {
|
|
|
52 ngx_string("openssl"),
|
|
|
53 ngx_openssl_create_conf,
|
|
|
54 ngx_openssl_init_conf
|
|
126
|
55 };
|
|
90
|
56
|
|
|
57
|
|
|
58 ngx_module_t ngx_openssl_module = {
|
|
|
59 NGX_MODULE_V1,
|
|
|
60 &ngx_openssl_module_ctx, /* module context */
|
|
|
61 ngx_openssl_commands, /* module directives */
|
|
|
62 NGX_CORE_MODULE, /* module type */
|
|
|
63 NULL, /* init master */
|
|
|
64 NULL, /* init module */
|
|
|
65 NULL, /* init process */
|
|
|
66 NULL, /* init thread */
|
|
|
67 NULL, /* exit thread */
|
|
|
68 NULL, /* exit process */
|
|
120
|
69 ngx_openssl_exit, /* exit master */
|
|
90
|
70 NGX_MODULE_V1_PADDING
|
|
96
|
71 };
|
|
|
72
|
|
|
73
|
|
|
74 static long ngx_ssl_protocols[] = {
|
|
|
75 SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1,
|
|
|
76 SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1,
|
|
|
77 SSL_OP_NO_SSLv2|SSL_OP_NO_TLSv1,
|
|
|
78 SSL_OP_NO_TLSv1,
|
|
|
79 SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3,
|
|
|
80 SSL_OP_NO_SSLv3,
|
|
|
81 SSL_OP_NO_SSLv2,
|
|
|
82 0,
|
|
|
83 };
|
|
0
|
84
|
|
|
85
|
|
38
|
86 ngx_int_t
|
|
|
87 ngx_ssl_init(ngx_log_t *log)
|
|
0
|
88 {
|
|
|
89 SSL_library_init();
|
|
|
90 SSL_load_error_strings();
|
|
90
|
91
|
|
|
92 #if (NGX_SSL_ENGINE)
|
|
28
|
93 ENGINE_load_builtin_engines();
|
|
90
|
94 #endif
|
|
0
|
95
|
|
|
96 return NGX_OK;
|
|
|
97 }
|
|
|
98
|
|
|
99
|
|
38
|
100 ngx_int_t
|
|
96
|
101 ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols)
|
|
|
102 {
|
|
126
|
103 ssl->ctx = SSL_CTX_new(SSLv23_method());
|
|
96
|
104
|
|
|
105 if (ssl->ctx == NULL) {
|
|
|
106 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "SSL_CTX_new() failed");
|
|
|
107 return NGX_ERROR;
|
|
|
108 }
|
|
|
109
|
|
126
|
110 /* client side options */
|
|
|
111
|
|
|
112 SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_SESS_ID_BUG);
|
|
|
113 SSL_CTX_set_options(ssl->ctx, SSL_OP_NETSCAPE_CHALLENGE_BUG);
|
|
|
114 SSL_CTX_set_options(ssl->ctx, SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG);
|
|
|
115
|
|
|
116 /* server side options */
|
|
112
|
117
|
|
|
118 SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG);
|
|
|
119 SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER);
|
|
|
120
|
|
|
121 /* this option allow a potential SSL 2.0 rollback (CAN-2005-2969) */
|
|
|
122 SSL_CTX_set_options(ssl->ctx, SSL_OP_MSIE_SSLV2_RSA_PADDING);
|
|
|
123
|
|
|
124 SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLEAY_080_CLIENT_DH_BUG);
|
|
|
125 SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_D5_BUG);
|
|
|
126 SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_BLOCK_PADDING_BUG);
|
|
|
127
|
|
|
128 #ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
|
|
|
129 SSL_CTX_set_options(ssl->ctx, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
|
|
|
130 #endif
|
|
|
131
|
|
96
|
132
|
|
|
133 if (ngx_ssl_protocols[protocols >> 1] != 0) {
|
|
|
134 SSL_CTX_set_options(ssl->ctx, ngx_ssl_protocols[protocols >> 1]);
|
|
|
135 }
|
|
|
136
|
|
|
137 SSL_CTX_set_mode(ssl->ctx, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
|
|
|
138
|
|
|
139 SSL_CTX_set_read_ahead(ssl->ctx, 1);
|
|
|
140
|
|
|
141 return NGX_OK;
|
|
|
142 }
|
|
|
143
|
|
|
144
|
|
|
145 ngx_int_t
|
|
112
|
146 ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
|
|
|
147 ngx_str_t *key)
|
|
96
|
148 {
|
|
112
|
149 if (ngx_conf_full_name(cf->cycle, cert) == NGX_ERROR) {
|
|
96
|
150 return NGX_ERROR;
|
|
|
151 }
|
|
|
152
|
|
112
|
153 if (SSL_CTX_use_certificate_chain_file(ssl->ctx, (char *) cert->data)
|
|
96
|
154 == 0)
|
|
|
155 {
|
|
|
156 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
|
|
112
|
157 "SSL_CTX_use_certificate_chain_file(\"%s\") failed",
|
|
|
158 cert->data);
|
|
|
159 return NGX_ERROR;
|
|
|
160 }
|
|
|
161
|
|
|
162 if (ngx_conf_full_name(cf->cycle, key) == NGX_ERROR) {
|
|
|
163 return NGX_ERROR;
|
|
|
164 }
|
|
|
165
|
|
|
166 if (SSL_CTX_use_PrivateKey_file(ssl->ctx, (char *) key->data,
|
|
|
167 SSL_FILETYPE_PEM) == 0)
|
|
|
168 {
|
|
|
169 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
|
|
|
170 "SSL_CTX_use_PrivateKey_file(\"%s\") failed", key->data);
|
|
96
|
171 return NGX_ERROR;
|
|
|
172 }
|
|
|
173
|
|
|
174 return NGX_OK;
|
|
|
175 }
|
|
|
176
|
|
|
177
|
|
|
178 ngx_int_t
|
|
|
179 ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl)
|
|
|
180 {
|
|
108
|
181 if (SSL_CTX_need_tmp_RSA(ssl->ctx) == 0) {
|
|
|
182 return NGX_OK;
|
|
|
183 }
|
|
|
184
|
|
96
|
185 ssl->rsa512_key = RSA_generate_key(512, RSA_F4, NULL, NULL);
|
|
|
186
|
|
|
187 if (ssl->rsa512_key) {
|
|
|
188 SSL_CTX_set_tmp_rsa(ssl->ctx, ssl->rsa512_key);
|
|
|
189 return NGX_OK;
|
|
|
190 }
|
|
|
191
|
|
|
192 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "RSA_generate_key(512) failed");
|
|
|
193
|
|
|
194 return NGX_ERROR;
|
|
|
195 }
|
|
|
196
|
|
|
197
|
|
|
198 ngx_int_t
|
|
|
199 ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c, ngx_uint_t flags)
|
|
126
|
200 {
|
|
96
|
201 ngx_ssl_connection_t *sc;
|
|
0
|
202
|
|
96
|
203 sc = ngx_pcalloc(c->pool, sizeof(ngx_ssl_connection_t));
|
|
|
204 if (sc == NULL) {
|
|
0
|
205 return NGX_ERROR;
|
|
|
206 }
|
|
|
207
|
|
92
|
208 if (flags & NGX_SSL_BUFFER) {
|
|
96
|
209 sc->buffer = 1;
|
|
92
|
210
|
|
96
|
211 sc->buf = ngx_create_temp_buf(c->pool, NGX_SSL_BUFSIZE);
|
|
|
212 if (sc->buf == NULL) {
|
|
92
|
213 return NGX_ERROR;
|
|
|
214 }
|
|
0
|
215 }
|
|
|
216
|
|
96
|
217 sc->connection = SSL_new(ssl->ctx);
|
|
0
|
218
|
|
96
|
219 if (sc->connection == NULL) {
|
|
0
|
220 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_new() failed");
|
|
|
221 return NGX_ERROR;
|
|
|
222 }
|
|
|
223
|
|
96
|
224 if (SSL_set_fd(sc->connection, c->fd) == 0) {
|
|
0
|
225 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_fd() failed");
|
|
|
226 return NGX_ERROR;
|
|
|
227 }
|
|
|
228
|
|
126
|
229 if (flags & NGX_SSL_CLIENT) {
|
|
|
230 SSL_set_connect_state(sc->connection);
|
|
|
231
|
|
|
232 } else {
|
|
|
233 SSL_set_accept_state(sc->connection);
|
|
|
234 }
|
|
0
|
235
|
|
96
|
236 c->ssl = sc;
|
|
0
|
237
|
|
|
238 return NGX_OK;
|
|
|
239 }
|
|
|
240
|
|
|
241
|
|
96
|
242 ngx_int_t
|
|
126
|
243 ngx_ssl_set_session(ngx_connection_t *c, ngx_ssl_session_t *session)
|
|
|
244 {
|
|
|
245 if (session) {
|
|
|
246 if (SSL_set_session(c->ssl->connection, session) == 0) {
|
|
|
247 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_session() failed");
|
|
|
248 return NGX_ERROR;
|
|
|
249 }
|
|
|
250 }
|
|
|
251
|
|
|
252 return NGX_OK;
|
|
|
253 }
|
|
|
254
|
|
|
255
|
|
|
256 ngx_int_t
|
|
96
|
257 ngx_ssl_handshake(ngx_connection_t *c)
|
|
|
258 {
|
|
|
259 int n, sslerr;
|
|
|
260 ngx_err_t err;
|
|
|
261
|
|
|
262 n = SSL_do_handshake(c->ssl->connection);
|
|
|
263
|
|
126
|
264 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_do_handshake: %d", n);
|
|
96
|
265
|
|
|
266 if (n == 1) {
|
|
|
267
|
|
|
268 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
269 return NGX_ERROR;
|
|
|
270 }
|
|
|
271
|
|
|
272 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
273 return NGX_ERROR;
|
|
|
274 }
|
|
|
275
|
|
|
276 #if (NGX_DEBUG)
|
|
|
277 {
|
|
|
278 char buf[129], *s, *d;
|
|
|
279 SSL_CIPHER *cipher;
|
|
|
280
|
|
|
281 cipher = SSL_get_current_cipher(c->ssl->connection);
|
|
|
282
|
|
|
283 if (cipher) {
|
|
|
284 SSL_CIPHER_description(cipher, &buf[1], 128);
|
|
|
285
|
|
|
286 for (s = &buf[1], d = buf; *s; s++) {
|
|
|
287 if (*s == ' ' && *d == ' ') {
|
|
|
288 continue;
|
|
|
289 }
|
|
|
290
|
|
|
291 if (*s == LF || *s == CR) {
|
|
|
292 continue;
|
|
|
293 }
|
|
|
294
|
|
|
295 *++d = *s;
|
|
|
296 }
|
|
|
297
|
|
|
298 if (*d != ' ') {
|
|
|
299 d++;
|
|
|
300 }
|
|
|
301
|
|
|
302 *d = '\0';
|
|
|
303
|
|
132
|
304 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
96
|
305 "SSL: %s, cipher: \"%s\"",
|
|
126
|
306 SSL_get_version(c->ssl->connection), &buf[1]);
|
|
96
|
307
|
|
|
308 if (SSL_session_reused(c->ssl->connection)) {
|
|
132
|
309 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
96
|
310 "SSL reused session");
|
|
|
311 }
|
|
|
312
|
|
|
313 } else {
|
|
|
314 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
126
|
315 "SSL no shared ciphers");
|
|
96
|
316 }
|
|
|
317 }
|
|
|
318 #endif
|
|
|
319
|
|
|
320 c->ssl->handshaked = 1;
|
|
|
321
|
|
|
322 c->recv = ngx_ssl_recv;
|
|
|
323 c->send = ngx_ssl_write;
|
|
126
|
324 c->recv_chain = ngx_ssl_recv_chain;
|
|
|
325 c->send_chain = ngx_ssl_send_chain;
|
|
96
|
326
|
|
|
327 return NGX_OK;
|
|
|
328 }
|
|
|
329
|
|
|
330 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
|
331
|
|
|
332 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
333
|
|
|
334 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
|
335 c->read->ready = 0;
|
|
|
336 c->read->handler = ngx_ssl_handshake_handler;
|
|
|
337
|
|
|
338 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
339 return NGX_ERROR;
|
|
|
340 }
|
|
|
341
|
|
|
342 return NGX_AGAIN;
|
|
|
343 }
|
|
|
344
|
|
|
345 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
346 c->write->ready = 0;
|
|
|
347 c->write->handler = ngx_ssl_handshake_handler;
|
|
|
348
|
|
|
349 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
350 return NGX_ERROR;
|
|
|
351 }
|
|
|
352
|
|
|
353 return NGX_AGAIN;
|
|
|
354 }
|
|
|
355
|
|
|
356 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
357
|
|
|
358 c->ssl->no_wait_shutdown = 1;
|
|
|
359 c->ssl->no_send_shutdown = 1;
|
|
|
360
|
|
|
361 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
|
|
|
362 ngx_log_error(NGX_LOG_INFO, c->log, err,
|
|
126
|
363 "peer closed connection in SSL handshake");
|
|
96
|
364
|
|
|
365 return NGX_ERROR;
|
|
|
366 }
|
|
|
367
|
|
|
368 ngx_ssl_connection_error(c, sslerr, err, "SSL_do_handshake() failed");
|
|
|
369
|
|
|
370 return NGX_ERROR;
|
|
|
371 }
|
|
|
372
|
|
|
373
|
|
|
374 static void
|
|
|
375 ngx_ssl_handshake_handler(ngx_event_t *ev)
|
|
|
376 {
|
|
|
377 ngx_connection_t *c;
|
|
|
378
|
|
|
379 c = ev->data;
|
|
|
380
|
|
98
|
381 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
126
|
382 "SSL handshake handler: %d", ev->write);
|
|
96
|
383
|
|
|
384 if (ngx_ssl_handshake(c) == NGX_AGAIN) {
|
|
|
385 return;
|
|
|
386 }
|
|
|
387
|
|
|
388 c->ssl->handler(c);
|
|
|
389 }
|
|
|
390
|
|
|
391
|
|
38
|
392 ssize_t
|
|
126
|
393 ngx_ssl_recv_chain(ngx_connection_t *c, ngx_chain_t *cl)
|
|
|
394 {
|
|
|
395 ssize_t n, bytes;
|
|
|
396 ngx_buf_t *b;
|
|
|
397
|
|
|
398 bytes = 0;
|
|
|
399
|
|
|
400 while (cl) {
|
|
|
401 b = cl->buf;
|
|
|
402
|
|
|
403 n = ngx_ssl_recv(c, b->last, b->end - b->last);
|
|
|
404
|
|
|
405 if (n > 0) {
|
|
|
406 b->last += n;
|
|
|
407 bytes += n;
|
|
|
408
|
|
|
409 if (b->last == b->end) {
|
|
|
410 cl = cl->next;
|
|
|
411 }
|
|
|
412
|
|
|
413 continue;
|
|
|
414 }
|
|
|
415
|
|
|
416 if (bytes) {
|
|
|
417 return bytes;
|
|
|
418 }
|
|
|
419
|
|
|
420 return n;
|
|
|
421 }
|
|
|
422
|
|
|
423 return bytes;
|
|
|
424 }
|
|
|
425
|
|
|
426
|
|
|
427 ssize_t
|
|
38
|
428 ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
429 {
|
|
38
|
430 int n, bytes;
|
|
|
431
|
|
|
432 if (c->ssl->last == NGX_ERROR) {
|
|
|
433 return NGX_ERROR;
|
|
|
434 }
|
|
|
435
|
|
126
|
436 if (c->ssl->last == NGX_DONE) {
|
|
|
437 return 0;
|
|
|
438 }
|
|
|
439
|
|
38
|
440 bytes = 0;
|
|
0
|
441
|
|
38
|
442 /*
|
|
|
443 * SSL_read() may return data in parts, so try to read
|
|
|
444 * until SSL_read() would return no data
|
|
|
445 */
|
|
|
446
|
|
|
447 for ( ;; ) {
|
|
0
|
448
|
|
92
|
449 n = SSL_read(c->ssl->connection, buf, size);
|
|
38
|
450
|
|
126
|
451 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_read: %d", n);
|
|
0
|
452
|
|
38
|
453 if (n > 0) {
|
|
|
454 bytes += n;
|
|
|
455 }
|
|
|
456
|
|
|
457 c->ssl->last = ngx_ssl_handle_recv(c, n);
|
|
|
458
|
|
|
459 if (c->ssl->last != NGX_OK) {
|
|
28
|
460
|
|
38
|
461 if (bytes) {
|
|
|
462 return bytes;
|
|
126
|
463 }
|
|
38
|
464
|
|
126
|
465 if (c->ssl->last == NGX_DONE) {
|
|
|
466 return 0;
|
|
28
|
467 }
|
|
126
|
468
|
|
|
469 return c->ssl->last;
|
|
28
|
470 }
|
|
|
471
|
|
38
|
472 size -= n;
|
|
|
473
|
|
|
474 if (size == 0) {
|
|
|
475 return bytes;
|
|
|
476 }
|
|
|
477
|
|
|
478 buf += n;
|
|
|
479 }
|
|
|
480 }
|
|
|
481
|
|
|
482
|
|
|
483 static ngx_int_t
|
|
|
484 ngx_ssl_handle_recv(ngx_connection_t *c, int n)
|
|
|
485 {
|
|
96
|
486 int sslerr;
|
|
|
487 ngx_err_t err;
|
|
38
|
488
|
|
|
489 if (n > 0) {
|
|
28
|
490
|
|
22
|
491 if (c->ssl->saved_write_handler) {
|
|
|
492
|
|
58
|
493 c->write->handler = c->ssl->saved_write_handler;
|
|
22
|
494 c->ssl->saved_write_handler = NULL;
|
|
|
495 c->write->ready = 1;
|
|
|
496
|
|
|
497 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
498 return NGX_ERROR;
|
|
|
499 }
|
|
|
500
|
|
112
|
501 ngx_post_event(c->write, &ngx_posted_events);
|
|
22
|
502 }
|
|
|
503
|
|
38
|
504 return NGX_OK;
|
|
0
|
505 }
|
|
|
506
|
|
92
|
507 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
508
|
|
|
509 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
510
|
|
|
511 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
512
|
|
|
513 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
4
|
514 c->read->ready = 0;
|
|
0
|
515 return NGX_AGAIN;
|
|
|
516 }
|
|
|
517
|
|
|
518 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
88
|
519
|
|
96
|
520 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
521 "peer started SSL renegotiation");
|
|
22
|
522
|
|
|
523 c->write->ready = 0;
|
|
|
524
|
|
|
525 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
526 return NGX_ERROR;
|
|
|
527 }
|
|
|
528
|
|
|
529 /*
|
|
|
530 * we do not set the timer because there is already the read event timer
|
|
|
531 */
|
|
|
532
|
|
|
533 if (c->ssl->saved_write_handler == NULL) {
|
|
58
|
534 c->ssl->saved_write_handler = c->write->handler;
|
|
|
535 c->write->handler = ngx_ssl_write_handler;
|
|
22
|
536 }
|
|
|
537
|
|
0
|
538 return NGX_AGAIN;
|
|
|
539 }
|
|
|
540
|
|
96
|
541 c->ssl->no_wait_shutdown = 1;
|
|
|
542 c->ssl->no_send_shutdown = 1;
|
|
0
|
543
|
|
|
544 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
|
|
126
|
545 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
546 "peer shutdown SSL cleanly");
|
|
|
547 return NGX_DONE;
|
|
0
|
548 }
|
|
|
549
|
|
96
|
550 ngx_ssl_connection_error(c, sslerr, err, "SSL_read() failed");
|
|
0
|
551
|
|
|
552 return NGX_ERROR;
|
|
|
553 }
|
|
|
554
|
|
|
555
|
|
38
|
556 static void
|
|
|
557 ngx_ssl_write_handler(ngx_event_t *wev)
|
|
22
|
558 {
|
|
|
559 ngx_connection_t *c;
|
|
|
560
|
|
|
561 c = wev->data;
|
|
96
|
562
|
|
58
|
563 c->read->handler(c->read);
|
|
22
|
564 }
|
|
|
565
|
|
|
566
|
|
0
|
567 /*
|
|
|
568 * OpenSSL has no SSL_writev() so we copy several bufs into our 16K buffer
|
|
22
|
569 * before the SSL_write() call to decrease a SSL overhead.
|
|
0
|
570 *
|
|
|
571 * Besides for protocols such as HTTP it is possible to always buffer
|
|
|
572 * the output to decrease a SSL overhead some more.
|
|
|
573 */
|
|
|
574
|
|
38
|
575 ngx_chain_t *
|
|
|
576 ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
|
|
0
|
577 {
|
|
|
578 int n;
|
|
|
579 ngx_uint_t flush;
|
|
|
580 ssize_t send, size;
|
|
|
581 ngx_buf_t *buf;
|
|
|
582
|
|
126
|
583 if (!c->ssl->buffer || (in && in->next == NULL && !c->buffered)) {
|
|
0
|
584
|
|
|
585 /*
|
|
126
|
586 * we avoid a buffer copy if
|
|
|
587 * we do not need to buffer the output
|
|
|
588 * or the incoming buf is a single and our buffer is empty
|
|
0
|
589 */
|
|
|
590
|
|
126
|
591 while (in) {
|
|
|
592 if (ngx_buf_special(in->buf)) {
|
|
|
593 in = in->next;
|
|
|
594 continue;
|
|
|
595 }
|
|
0
|
596
|
|
126
|
597 n = ngx_ssl_write(c, in->buf->pos, in->buf->last - in->buf->pos);
|
|
|
598
|
|
|
599 if (n == NGX_ERROR) {
|
|
|
600 return NGX_CHAIN_ERROR;
|
|
|
601 }
|
|
0
|
602
|
|
126
|
603 if (n == NGX_AGAIN) {
|
|
|
604 c->buffered = 1;
|
|
|
605 return in;
|
|
|
606 }
|
|
|
607
|
|
|
608 in->buf->pos += n;
|
|
|
609
|
|
|
610 if (in->buf->pos == in->buf->last) {
|
|
|
611 in = in->next;
|
|
|
612 }
|
|
0
|
613 }
|
|
|
614
|
|
|
615 return in;
|
|
|
616 }
|
|
|
617
|
|
22
|
618
|
|
|
619 /* the maximum limit size is the maximum uint32_t value - the page size */
|
|
|
620
|
|
|
621 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) {
|
|
|
622 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize;
|
|
|
623 }
|
|
|
624
|
|
|
625
|
|
126
|
626 buf = c->ssl->buf;
|
|
0
|
627 send = 0;
|
|
|
628 flush = (in == NULL) ? 1 : 0;
|
|
|
629
|
|
|
630 for ( ;; ) {
|
|
|
631
|
|
|
632 while (in && buf->last < buf->end) {
|
|
132
|
633 if (in->buf->last_buf || in->buf->flush) {
|
|
0
|
634 flush = 1;
|
|
|
635 }
|
|
|
636
|
|
|
637 if (ngx_buf_special(in->buf)) {
|
|
|
638 in = in->next;
|
|
|
639 continue;
|
|
|
640 }
|
|
|
641
|
|
|
642 size = in->buf->last - in->buf->pos;
|
|
|
643
|
|
|
644 if (size > buf->end - buf->last) {
|
|
|
645 size = buf->end - buf->last;
|
|
|
646 }
|
|
|
647
|
|
|
648 if (send + size > limit) {
|
|
126
|
649 size = (ssize_t) (limit - send);
|
|
0
|
650 flush = 1;
|
|
|
651 }
|
|
|
652
|
|
|
653 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
654 "SSL buf copy: %d", size);
|
|
|
655
|
|
|
656 ngx_memcpy(buf->last, in->buf->pos, size);
|
|
|
657
|
|
|
658 buf->last += size;
|
|
|
659
|
|
|
660 in->buf->pos += size;
|
|
126
|
661
|
|
0
|
662 if (in->buf->pos == in->buf->last) {
|
|
|
663 in = in->next;
|
|
|
664 }
|
|
|
665 }
|
|
|
666
|
|
|
667 size = buf->last - buf->pos;
|
|
|
668
|
|
|
669 if (!flush && buf->last < buf->end && c->ssl->buffer) {
|
|
|
670 break;
|
|
|
671 }
|
|
|
672
|
|
|
673 n = ngx_ssl_write(c, buf->pos, size);
|
|
|
674
|
|
|
675 if (n == NGX_ERROR) {
|
|
|
676 return NGX_CHAIN_ERROR;
|
|
|
677 }
|
|
|
678
|
|
60
|
679 if (n == NGX_AGAIN) {
|
|
|
680 c->buffered = 1;
|
|
|
681 return in;
|
|
0
|
682 }
|
|
|
683
|
|
|
684 buf->pos += n;
|
|
|
685 send += n;
|
|
|
686 c->sent += n;
|
|
|
687
|
|
|
688 if (n < size) {
|
|
|
689 break;
|
|
|
690 }
|
|
|
691
|
|
|
692 if (buf->pos == buf->last) {
|
|
|
693 buf->pos = buf->start;
|
|
|
694 buf->last = buf->start;
|
|
|
695 }
|
|
|
696
|
|
|
697 if (in == NULL || send == limit) {
|
|
|
698 break;
|
|
|
699 }
|
|
|
700 }
|
|
|
701
|
|
|
702 c->buffered = (buf->pos < buf->last) ? 1 : 0;
|
|
|
703
|
|
|
704 return in;
|
|
|
705 }
|
|
|
706
|
|
|
707
|
|
88
|
708 ssize_t
|
|
38
|
709 ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size)
|
|
0
|
710 {
|
|
96
|
711 int n, sslerr;
|
|
|
712 ngx_err_t err;
|
|
0
|
713
|
|
|
714 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL to write: %d", size);
|
|
|
715
|
|
92
|
716 n = SSL_write(c->ssl->connection, data, size);
|
|
0
|
717
|
|
|
718 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_write: %d", n);
|
|
|
719
|
|
|
720 if (n > 0) {
|
|
88
|
721
|
|
22
|
722 if (c->ssl->saved_read_handler) {
|
|
|
723
|
|
58
|
724 c->read->handler = c->ssl->saved_read_handler;
|
|
22
|
725 c->ssl->saved_read_handler = NULL;
|
|
|
726 c->read->ready = 1;
|
|
|
727
|
|
|
728 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
729 return NGX_ERROR;
|
|
|
730 }
|
|
|
731
|
|
112
|
732 ngx_post_event(c->read, &ngx_posted_events);
|
|
22
|
733 }
|
|
|
734
|
|
0
|
735 return n;
|
|
|
736 }
|
|
|
737
|
|
92
|
738 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
739
|
|
|
740 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
741
|
|
|
742 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
743
|
|
|
744 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
745 c->write->ready = 0;
|
|
|
746 return NGX_AGAIN;
|
|
|
747 }
|
|
|
748
|
|
|
749 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
2
|
750
|
|
96
|
751 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
752 "peer started SSL renegotiation");
|
|
22
|
753
|
|
|
754 c->read->ready = 0;
|
|
|
755
|
|
|
756 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
757 return NGX_ERROR;
|
|
|
758 }
|
|
|
759
|
|
|
760 /*
|
|
|
761 * we do not set the timer because there is already
|
|
|
762 * the write event timer
|
|
|
763 */
|
|
|
764
|
|
|
765 if (c->ssl->saved_read_handler == NULL) {
|
|
58
|
766 c->ssl->saved_read_handler = c->read->handler;
|
|
|
767 c->read->handler = ngx_ssl_read_handler;
|
|
22
|
768 }
|
|
|
769
|
|
0
|
770 return NGX_AGAIN;
|
|
|
771 }
|
|
|
772
|
|
96
|
773 c->ssl->no_wait_shutdown = 1;
|
|
|
774 c->ssl->no_send_shutdown = 1;
|
|
92
|
775
|
|
96
|
776 ngx_ssl_connection_error(c, sslerr, err, "SSL_write() failed");
|
|
0
|
777
|
|
|
778 return NGX_ERROR;
|
|
|
779 }
|
|
|
780
|
|
|
781
|
|
38
|
782 static void
|
|
|
783 ngx_ssl_read_handler(ngx_event_t *rev)
|
|
22
|
784 {
|
|
|
785 ngx_connection_t *c;
|
|
|
786
|
|
|
787 c = rev->data;
|
|
96
|
788
|
|
58
|
789 c->write->handler(c->write);
|
|
22
|
790 }
|
|
|
791
|
|
|
792
|
|
38
|
793 ngx_int_t
|
|
|
794 ngx_ssl_shutdown(ngx_connection_t *c)
|
|
0
|
795 {
|
|
22
|
796 int n, sslerr, mode;
|
|
0
|
797 ngx_uint_t again;
|
|
|
798
|
|
126
|
799 if (c->timedout) {
|
|
96
|
800 mode = SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN;
|
|
0
|
801
|
|
96
|
802 } else {
|
|
|
803 mode = SSL_get_shutdown(c->ssl->connection);
|
|
22
|
804
|
|
96
|
805 if (c->ssl->no_wait_shutdown) {
|
|
|
806 mode |= SSL_RECEIVED_SHUTDOWN;
|
|
0
|
807 }
|
|
|
808
|
|
96
|
809 if (c->ssl->no_send_shutdown) {
|
|
|
810 mode |= SSL_SENT_SHUTDOWN;
|
|
0
|
811 }
|
|
|
812 }
|
|
|
813
|
|
96
|
814 SSL_set_shutdown(c->ssl->connection, mode);
|
|
|
815
|
|
0
|
816 again = 0;
|
|
10
|
817 #if (NGX_SUPPRESS_WARN)
|
|
|
818 sslerr = 0;
|
|
|
819 #endif
|
|
0
|
820
|
|
|
821 for ( ;; ) {
|
|
92
|
822 n = SSL_shutdown(c->ssl->connection);
|
|
0
|
823
|
|
|
824 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_shutdown: %d", n);
|
|
|
825
|
|
126
|
826 if (n == 1 || (n == 0 && c->timedout)) {
|
|
92
|
827 SSL_free(c->ssl->connection);
|
|
22
|
828 c->ssl = NULL;
|
|
92
|
829
|
|
22
|
830 return NGX_OK;
|
|
|
831 }
|
|
|
832
|
|
0
|
833 if (n == 0) {
|
|
|
834 again = 1;
|
|
|
835 break;
|
|
|
836 }
|
|
|
837
|
|
|
838 break;
|
|
|
839 }
|
|
|
840
|
|
|
841 if (!again) {
|
|
92
|
842 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
843
|
|
|
844 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
845 "SSL_get_error: %d", sslerr);
|
|
|
846 }
|
|
|
847
|
|
|
848 if (again || sslerr == SSL_ERROR_WANT_READ) {
|
|
|
849
|
|
22
|
850 ngx_add_timer(c->read, 30000);
|
|
0
|
851
|
|
126
|
852 c->read->handler = ngx_ssl_shutdown_handler;
|
|
|
853
|
|
0
|
854 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
855 return NGX_ERROR;
|
|
|
856 }
|
|
|
857
|
|
|
858 return NGX_AGAIN;
|
|
|
859 }
|
|
|
860
|
|
|
861 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
862
|
|
126
|
863 c->write->handler = ngx_ssl_shutdown_handler;
|
|
|
864
|
|
0
|
865 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
866 return NGX_ERROR;
|
|
|
867 }
|
|
|
868
|
|
|
869 return NGX_AGAIN;
|
|
|
870 }
|
|
|
871
|
|
|
872 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_shutdown() failed");
|
|
|
873
|
|
92
|
874 SSL_free(c->ssl->connection);
|
|
|
875 c->ssl = NULL;
|
|
|
876
|
|
0
|
877 return NGX_ERROR;
|
|
|
878 }
|
|
|
879
|
|
|
880
|
|
96
|
881 static void
|
|
126
|
882 ngx_ssl_shutdown_handler(ngx_event_t *ev)
|
|
|
883 {
|
|
|
884 ngx_connection_t *c;
|
|
|
885 ngx_connection_handler_pt handler;
|
|
|
886
|
|
|
887 c = ev->data;
|
|
|
888 handler = c->ssl->handler;
|
|
|
889
|
|
|
890 if (ev->timedout) {
|
|
|
891 c->timedout = 1;
|
|
|
892 }
|
|
|
893
|
|
|
894 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "SSL shutdown handler");
|
|
|
895
|
|
|
896 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
897 return;
|
|
|
898 }
|
|
|
899
|
|
|
900 handler(c);
|
|
|
901 }
|
|
|
902
|
|
|
903
|
|
|
904 static void
|
|
96
|
905 ngx_ssl_connection_error(ngx_connection_t *c, int sslerr, ngx_err_t err,
|
|
|
906 char *text)
|
|
|
907 {
|
|
|
908 ngx_uint_t level;
|
|
|
909
|
|
|
910 level = NGX_LOG_CRIT;
|
|
|
911
|
|
|
912 if (sslerr == SSL_ERROR_SYSCALL) {
|
|
|
913
|
|
|
914 if (err == NGX_ECONNRESET
|
|
|
915 || err == NGX_EPIPE
|
|
|
916 || err == NGX_ENOTCONN
|
|
|
917 || err == NGX_ECONNREFUSED
|
|
|
918 || err == NGX_EHOSTUNREACH)
|
|
|
919 {
|
|
|
920 switch (c->log_error) {
|
|
|
921
|
|
|
922 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
923 case NGX_ERROR_INFO:
|
|
|
924 level = NGX_LOG_INFO;
|
|
|
925 break;
|
|
|
926
|
|
|
927 case NGX_ERROR_ERR:
|
|
|
928 level = NGX_LOG_ERR;
|
|
|
929 break;
|
|
|
930
|
|
|
931 default:
|
|
|
932 break;
|
|
|
933 }
|
|
|
934 }
|
|
|
935 }
|
|
|
936
|
|
|
937 ngx_ssl_error(level, c->log, err, text);
|
|
|
938 }
|
|
|
939
|
|
|
940
|
|
132
|
941 void ngx_cdecl
|
|
38
|
942 ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, char *fmt, ...)
|
|
126
|
943 {
|
|
96
|
944 u_long n;
|
|
|
945 va_list args;
|
|
10
|
946 u_char errstr[NGX_MAX_CONF_ERRSTR], *p, *last;
|
|
|
947
|
|
|
948 last = errstr + NGX_MAX_CONF_ERRSTR;
|
|
0
|
949
|
|
|
950 va_start(args, fmt);
|
|
10
|
951 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
|
|
0
|
952 va_end(args);
|
|
|
953
|
|
96
|
954 p = ngx_cpystrn(p, (u_char *) " (SSL:", last - p);
|
|
|
955
|
|
132
|
956 while (p < last) {
|
|
|
957
|
|
|
958 n = ERR_get_error();
|
|
|
959
|
|
|
960 if (n == 0) {
|
|
|
961 break;
|
|
|
962 }
|
|
96
|
963
|
|
|
964 *p++ = ' ';
|
|
0
|
965
|
|
96
|
966 ERR_error_string_n(n, (char *) p, last - p);
|
|
|
967
|
|
|
968 while (p < last && *p) {
|
|
|
969 p++;
|
|
|
970 }
|
|
|
971 }
|
|
0
|
972
|
|
|
973 ngx_log_error(level, log, err, "%s)", errstr);
|
|
|
974 }
|
|
58
|
975
|
|
|
976
|
|
|
977 void
|
|
|
978 ngx_ssl_cleanup_ctx(void *data)
|
|
|
979 {
|
|
96
|
980 ngx_ssl_t *ssl = data;
|
|
58
|
981
|
|
108
|
982 if (ssl->rsa512_key) {
|
|
|
983 RSA_free(ssl->rsa512_key);
|
|
|
984 }
|
|
|
985
|
|
96
|
986 SSL_CTX_free(ssl->ctx);
|
|
58
|
987 }
|
|
90
|
988
|
|
|
989
|
|
|
990 static void *
|
|
|
991 ngx_openssl_create_conf(ngx_cycle_t *cycle)
|
|
|
992 {
|
|
|
993 ngx_openssl_conf_t *oscf;
|
|
126
|
994
|
|
90
|
995 oscf = ngx_pcalloc(cycle->pool, sizeof(ngx_openssl_conf_t));
|
|
|
996 if (oscf == NULL) {
|
|
|
997 return NGX_CONF_ERROR;
|
|
|
998 }
|
|
126
|
999
|
|
90
|
1000 /*
|
|
|
1001 * set by ngx_pcalloc():
|
|
126
|
1002 *
|
|
90
|
1003 * oscf->engine.len = 0;
|
|
|
1004 * oscf->engine.data = NULL;
|
|
126
|
1005 */
|
|
90
|
1006
|
|
|
1007 return oscf;
|
|
|
1008 }
|
|
|
1009
|
|
|
1010
|
|
|
1011 static char *
|
|
|
1012 ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
1013 {
|
|
|
1014 #if (NGX_SSL_ENGINE)
|
|
|
1015 ngx_openssl_conf_t *oscf = conf;
|
|
120
|
1016
|
|
90
|
1017 ENGINE *engine;
|
|
|
1018
|
|
|
1019 if (oscf->engine.len == 0) {
|
|
|
1020 return NGX_CONF_OK;
|
|
|
1021 }
|
|
126
|
1022
|
|
90
|
1023 engine = ENGINE_by_id((const char *) oscf->engine.data);
|
|
|
1024
|
|
|
1025 if (engine == NULL) {
|
|
|
1026 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1027 "ENGINE_by_id(\"%V\") failed", &oscf->engine);
|
|
|
1028 return NGX_CONF_ERROR;
|
|
|
1029 }
|
|
|
1030
|
|
|
1031 if (ENGINE_set_default(engine, ENGINE_METHOD_ALL) == 0) {
|
|
|
1032 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1033 "ENGINE_set_default(\"%V\", ENGINE_METHOD_ALL) failed",
|
|
|
1034 &oscf->engine);
|
|
|
1035 return NGX_CONF_ERROR;
|
|
|
1036 }
|
|
|
1037
|
|
|
1038 ENGINE_free(engine);
|
|
|
1039
|
|
|
1040 #endif
|
|
|
1041
|
|
|
1042 return NGX_CONF_OK;
|
|
|
1043 }
|
|
|
1044
|
|
|
1045
|
|
|
1046 #if !(NGX_SSL_ENGINE)
|
|
|
1047
|
|
|
1048 static char *
|
|
|
1049 ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1050 {
|
|
|
1051 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
112
|
1052 "\"ssl_engine\" directive is available only in "
|
|
|
1053 "OpenSSL 0.9.7 and higher,");
|
|
90
|
1054
|
|
|
1055 return NGX_CONF_ERROR;
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 #endif
|
|
120
|
1059
|
|
|
1060
|
|
|
1061 static void
|
|
|
1062 ngx_openssl_exit(ngx_cycle_t *cycle)
|
|
|
1063 {
|
|
|
1064 #if (NGX_SSL_ENGINE)
|
|
|
1065 ENGINE_cleanup();
|
|
|
1066 #endif
|
|
|
1067 }
|
