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1 | /* | |
2 | * libratbox: a library used by ircd-ratbox and other things | |
3 | * openssl.c: openssl related code | |
4 | * | |
5 | * Copyright (C) 2007-2008 ircd-ratbox development team | |
6 | * Copyright (C) 2007-2008 Aaron Sethman <androsyn@ratbox.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
21 | * USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <libratbox_config.h> | |
26 | #include <ratbox_lib.h> | |
27 | ||
28 | #ifdef HAVE_OPENSSL | |
29 | ||
30 | #include <commio-int.h> | |
31 | #include <commio-ssl.h> | |
32 | #include <openssl/ssl.h> | |
33 | #include <openssl/dh.h> | |
34 | #include <openssl/err.h> | |
35 | #include <openssl/rand.h> | |
36 | ||
37 | static SSL_CTX *ssl_server_ctx; | |
38 | static SSL_CTX *ssl_client_ctx; | |
39 | static int libratbox_index = -1; | |
40 | ||
41 | static unsigned long | |
42 | get_last_err(void) | |
43 | { | |
44 | unsigned long t_err, err = 0; | |
45 | err = ERR_get_error(); | |
46 | if(err == 0) | |
47 | return 0; | |
48 | ||
49 | while((t_err = ERR_get_error()) > 0) | |
50 | err = t_err; | |
51 | ||
52 | return err; | |
53 | } | |
54 | ||
55 | void | |
56 | rb_ssl_shutdown(rb_fde_t *F) | |
57 | { | |
58 | int i; | |
59 | if(F == NULL || F->ssl == NULL) | |
60 | return; | |
61 | SSL_set_shutdown((SSL *) F->ssl, SSL_RECEIVED_SHUTDOWN); | |
62 | ||
63 | for(i = 0; i < 4; i++) | |
64 | { | |
65 | if(SSL_shutdown((SSL *) F->ssl)) | |
66 | break; | |
67 | } | |
68 | get_last_err(); | |
69 | SSL_free((SSL *) F->ssl); | |
70 | } | |
71 | ||
72 | unsigned int | |
73 | rb_ssl_handshake_count(rb_fde_t *F) | |
74 | { | |
75 | return F->handshake_count; | |
76 | } | |
77 | ||
78 | void | |
79 | rb_ssl_clear_handshake_count(rb_fde_t *F) | |
80 | { | |
81 | F->handshake_count = 0; | |
82 | } | |
83 | ||
84 | static void | |
85 | rb_ssl_timeout(rb_fde_t *F, void *notused) | |
86 | { | |
87 | lrb_assert(F->accept != NULL); | |
88 | F->accept->callback(F, RB_ERR_TIMEOUT, NULL, 0, F->accept->data); | |
89 | } | |
90 | ||
91 | ||
92 | static void | |
93 | rb_ssl_info_callback(SSL * ssl, int where, int ret) | |
94 | { | |
95 | if(where & SSL_CB_HANDSHAKE_START) | |
96 | { | |
97 | rb_fde_t *F = SSL_get_ex_data(ssl, libratbox_index); | |
98 | if(F == NULL) | |
99 | return; | |
100 | F->handshake_count++; | |
101 | } | |
102 | } | |
103 | ||
104 | static void | |
105 | rb_setup_ssl_cb(rb_fde_t *F) | |
106 | { | |
107 | SSL_set_ex_data(F->ssl, libratbox_index, (char *)F); | |
108 | SSL_set_info_callback((SSL *) F->ssl, (void (*)(const SSL *,int,int))rb_ssl_info_callback); | |
109 | } | |
110 | ||
111 | static void | |
112 | rb_ssl_tryaccept(rb_fde_t *F, void *data) | |
113 | { | |
114 | int ssl_err; | |
115 | lrb_assert(F->accept != NULL); | |
116 | int flags; | |
117 | struct acceptdata *ad; | |
118 | ||
119 | if(!SSL_is_init_finished((SSL *) F->ssl)) | |
120 | { | |
121 | if((ssl_err = SSL_accept((SSL *) F->ssl)) <= 0) | |
122 | { | |
123 | switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err)) | |
124 | { | |
125 | case SSL_ERROR_WANT_READ: | |
126 | case SSL_ERROR_WANT_WRITE: | |
127 | if(ssl_err == SSL_ERROR_WANT_WRITE) | |
128 | flags = RB_SELECT_WRITE; | |
129 | else | |
130 | flags = RB_SELECT_READ; | |
131 | F->ssl_errno = get_last_err(); | |
132 | rb_setselect(F, flags, rb_ssl_tryaccept, NULL); | |
133 | break; | |
134 | case SSL_ERROR_SYSCALL: | |
135 | F->accept->callback(F, RB_ERROR, NULL, 0, F->accept->data); | |
136 | break; | |
137 | default: | |
138 | F->ssl_errno = get_last_err(); | |
139 | F->accept->callback(F, RB_ERROR_SSL, NULL, 0, F->accept->data); | |
140 | break; | |
141 | } | |
142 | return; | |
143 | } | |
144 | } | |
145 | rb_settimeout(F, 0, NULL, NULL); | |
146 | rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE, NULL, NULL); | |
147 | ||
148 | ad = F->accept; | |
149 | F->accept = NULL; | |
150 | ad->callback(F, RB_OK, (struct sockaddr *)&ad->S, ad->addrlen, ad->data); | |
151 | rb_free(ad); | |
152 | ||
153 | } | |
154 | ||
155 | ||
156 | static void | |
157 | rb_ssl_accept_common(rb_fde_t *new_F) | |
158 | { | |
159 | int ssl_err; | |
160 | if((ssl_err = SSL_accept((SSL *) new_F->ssl)) <= 0) | |
161 | { | |
162 | switch (ssl_err = SSL_get_error((SSL *) new_F->ssl, ssl_err)) | |
163 | { | |
164 | case SSL_ERROR_SYSCALL: | |
165 | if(rb_ignore_errno(errno)) | |
166 | case SSL_ERROR_WANT_READ: | |
167 | case SSL_ERROR_WANT_WRITE: | |
168 | { | |
169 | new_F->ssl_errno = get_last_err(); | |
170 | rb_setselect(new_F, RB_SELECT_READ | RB_SELECT_WRITE, | |
171 | rb_ssl_tryaccept, NULL); | |
172 | return; | |
173 | } | |
174 | default: | |
175 | new_F->ssl_errno = get_last_err(); | |
176 | new_F->accept->callback(new_F, RB_ERROR_SSL, NULL, 0, new_F->accept->data); | |
177 | return; | |
178 | } | |
179 | } | |
180 | else | |
181 | { | |
182 | rb_ssl_tryaccept(new_F, NULL); | |
183 | } | |
184 | } | |
185 | ||
186 | void | |
187 | rb_ssl_start_accepted(rb_fde_t *new_F, ACCB * cb, void *data, int timeout) | |
188 | { | |
189 | new_F->type |= RB_FD_SSL; | |
190 | new_F->ssl = SSL_new(ssl_server_ctx); | |
191 | new_F->accept = rb_malloc(sizeof(struct acceptdata)); | |
192 | ||
193 | new_F->accept->callback = cb; | |
194 | new_F->accept->data = data; | |
195 | rb_settimeout(new_F, timeout, rb_ssl_timeout, NULL); | |
196 | ||
197 | new_F->accept->addrlen = 0; | |
198 | SSL_set_fd((SSL *) new_F->ssl, rb_get_fd(new_F)); | |
199 | rb_setup_ssl_cb(new_F); | |
200 | rb_ssl_accept_common(new_F); | |
201 | } | |
202 | ||
203 | ||
204 | ||
205 | ||
206 | void | |
207 | rb_ssl_accept_setup(rb_fde_t *F, rb_fde_t *new_F, struct sockaddr *st, int addrlen) | |
208 | { | |
209 | new_F->type |= RB_FD_SSL; | |
210 | new_F->ssl = SSL_new(ssl_server_ctx); | |
211 | new_F->accept = rb_malloc(sizeof(struct acceptdata)); | |
212 | ||
213 | new_F->accept->callback = F->accept->callback; | |
214 | new_F->accept->data = F->accept->data; | |
215 | rb_settimeout(new_F, 10, rb_ssl_timeout, NULL); | |
216 | memcpy(&new_F->accept->S, st, addrlen); | |
217 | new_F->accept->addrlen = addrlen; | |
218 | ||
219 | SSL_set_fd((SSL *) new_F->ssl, rb_get_fd(new_F)); | |
220 | rb_setup_ssl_cb(new_F); | |
221 | rb_ssl_accept_common(new_F); | |
222 | } | |
223 | ||
224 | static ssize_t | |
225 | rb_ssl_read_or_write(int r_or_w, rb_fde_t *F, void *rbuf, const void *wbuf, size_t count) | |
226 | { | |
227 | ssize_t ret; | |
228 | unsigned long err; | |
229 | SSL *ssl = F->ssl; | |
230 | ||
231 | if(r_or_w == 0) | |
232 | ret = (ssize_t) SSL_read(ssl, rbuf, (int)count); | |
233 | else | |
234 | ret = (ssize_t) SSL_write(ssl, wbuf, (int)count); | |
235 | ||
236 | if(ret < 0) | |
237 | { | |
238 | switch (SSL_get_error(ssl, ret)) | |
239 | { | |
240 | case SSL_ERROR_WANT_READ: | |
241 | errno = EAGAIN; | |
242 | return RB_RW_SSL_NEED_READ; | |
243 | case SSL_ERROR_WANT_WRITE: | |
244 | errno = EAGAIN; | |
245 | return RB_RW_SSL_NEED_WRITE; | |
246 | case SSL_ERROR_ZERO_RETURN: | |
247 | return 0; | |
248 | case SSL_ERROR_SYSCALL: | |
249 | err = get_last_err(); | |
250 | if(err == 0) | |
251 | { | |
252 | F->ssl_errno = 0; | |
253 | return RB_RW_IO_ERROR; | |
254 | } | |
255 | break; | |
256 | default: | |
257 | err = get_last_err(); | |
258 | break; | |
259 | } | |
260 | F->ssl_errno = err; | |
261 | if(err > 0) | |
262 | { | |
263 | errno = EIO; /* not great but... */ | |
264 | return RB_RW_SSL_ERROR; | |
265 | } | |
266 | return RB_RW_IO_ERROR; | |
267 | } | |
268 | return ret; | |
269 | } | |
270 | ||
271 | ssize_t | |
272 | rb_ssl_read(rb_fde_t *F, void *buf, size_t count) | |
273 | { | |
274 | return rb_ssl_read_or_write(0, F, buf, NULL, count); | |
275 | } | |
276 | ||
277 | ssize_t | |
278 | rb_ssl_write(rb_fde_t *F, const void *buf, size_t count) | |
279 | { | |
280 | return rb_ssl_read_or_write(1, F, NULL, buf, count); | |
281 | } | |
282 | ||
283 | static int | |
284 | verify_accept_all_cb(int preverify_ok, X509_STORE_CTX *x509_ctx) | |
285 | { | |
286 | return 1; | |
287 | } | |
288 | ||
289 | static const char * | |
290 | get_ssl_error(unsigned long err) | |
291 | { | |
292 | static char buf[512]; | |
293 | ||
294 | ERR_error_string_n(err, buf, sizeof buf); | |
295 | return buf; | |
296 | } | |
297 | ||
298 | int | |
299 | rb_init_ssl(void) | |
300 | { | |
301 | int ret = 1; | |
302 | char libratbox_data[] = "libratbox data"; | |
303 | SSL_load_error_strings(); | |
304 | SSL_library_init(); | |
305 | libratbox_index = SSL_get_ex_new_index(0, libratbox_data, NULL, NULL, NULL); | |
306 | ssl_server_ctx = SSL_CTX_new(SSLv23_server_method()); | |
307 | if(ssl_server_ctx == NULL) | |
308 | { | |
309 | rb_lib_log("rb_init_openssl: Unable to initialize OpenSSL server context: %s", | |
310 | get_ssl_error(ERR_get_error())); | |
311 | ret = 0; | |
312 | } | |
313 | /* Disable SSLv2, make the client use our settings */ | |
314 | SSL_CTX_set_options(ssl_server_ctx, SSL_OP_NO_SSLv2 | SSL_OP_CIPHER_SERVER_PREFERENCE); | |
315 | SSL_CTX_set_verify(ssl_server_ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, verify_accept_all_cb); | |
316 | ||
317 | ssl_client_ctx = SSL_CTX_new(TLSv1_client_method()); | |
318 | ||
319 | if(ssl_client_ctx == NULL) | |
320 | { | |
321 | rb_lib_log("rb_init_openssl: Unable to initialize OpenSSL client context: %s", | |
322 | get_ssl_error(ERR_get_error())); | |
323 | ret = 0; | |
324 | } | |
325 | return ret; | |
326 | } | |
327 | ||
328 | ||
329 | int | |
330 | rb_setup_ssl_server(const char *cert, const char *keyfile, const char *dhfile) | |
331 | { | |
332 | DH *dh; | |
333 | unsigned long err; | |
334 | if(cert == NULL) | |
335 | { | |
336 | rb_lib_log("rb_setup_ssl_server: No certificate file"); | |
337 | return 0; | |
338 | } | |
339 | if(!SSL_CTX_use_certificate_chain_file(ssl_server_ctx, cert)) | |
340 | { | |
341 | err = ERR_get_error(); | |
342 | rb_lib_log("rb_setup_ssl_server: Error loading certificate file [%s]: %s", cert, | |
343 | get_ssl_error(err)); | |
344 | return 0; | |
345 | } | |
346 | ||
347 | if(keyfile == NULL) | |
348 | { | |
349 | rb_lib_log("rb_setup_ssl_server: No key file"); | |
350 | return 0; | |
351 | } | |
352 | ||
353 | ||
354 | if(!SSL_CTX_use_PrivateKey_file(ssl_server_ctx, keyfile, SSL_FILETYPE_PEM)) | |
355 | { | |
356 | err = ERR_get_error(); | |
357 | rb_lib_log("rb_setup_ssl_server: Error loading keyfile [%s]: %s", keyfile, | |
358 | get_ssl_error(err)); | |
359 | return 0; | |
360 | } | |
361 | ||
362 | if(dhfile != NULL) | |
363 | { | |
364 | /* DH parameters aren't necessary, but they are nice..if they didn't pass one..that is their problem */ | |
365 | BIO *bio = BIO_new_file(dhfile, "r"); | |
366 | if(bio != NULL) | |
367 | { | |
368 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
369 | if(dh == NULL) | |
370 | { | |
371 | err = ERR_get_error(); | |
372 | rb_lib_log | |
373 | ("rb_setup_ssl_server: Error loading DH params file [%s]: %s", | |
374 | dhfile, get_ssl_error(err)); | |
375 | BIO_free(bio); | |
376 | return 0; | |
377 | } | |
378 | BIO_free(bio); | |
379 | SSL_CTX_set_tmp_dh(ssl_server_ctx, dh); | |
380 | } | |
381 | else | |
382 | { | |
383 | err = ERR_get_error(); | |
384 | rb_lib_log("rb_setup_ssl_server: Error loading DH params file [%s]: %s", | |
385 | dhfile, get_ssl_error(err)); | |
386 | } | |
387 | } | |
388 | return 1; | |
389 | } | |
390 | ||
391 | int | |
392 | rb_ssl_listen(rb_fde_t *F, int backlog) | |
393 | { | |
394 | F->type = RB_FD_SOCKET | RB_FD_LISTEN | RB_FD_SSL; | |
395 | return listen(F->fd, backlog); | |
396 | } | |
397 | ||
398 | struct ssl_connect | |
399 | { | |
400 | CNCB *callback; | |
401 | void *data; | |
402 | int timeout; | |
403 | }; | |
404 | ||
405 | static void | |
406 | rb_ssl_connect_realcb(rb_fde_t *F, int status, struct ssl_connect *sconn) | |
407 | { | |
408 | F->connect->callback = sconn->callback; | |
409 | F->connect->data = sconn->data; | |
410 | rb_free(sconn); | |
411 | rb_connect_callback(F, status); | |
412 | } | |
413 | ||
414 | static void | |
415 | rb_ssl_tryconn_timeout_cb(rb_fde_t *F, void *data) | |
416 | { | |
417 | rb_ssl_connect_realcb(F, RB_ERR_TIMEOUT, data); | |
418 | } | |
419 | ||
420 | static void | |
421 | rb_ssl_tryconn_cb(rb_fde_t *F, void *data) | |
422 | { | |
423 | struct ssl_connect *sconn = data; | |
424 | int ssl_err; | |
425 | if(!SSL_is_init_finished((SSL *) F->ssl)) | |
426 | { | |
427 | if((ssl_err = SSL_connect((SSL *) F->ssl)) <= 0) | |
428 | { | |
429 | switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err)) | |
430 | { | |
431 | case SSL_ERROR_SYSCALL: | |
432 | if(rb_ignore_errno(errno)) | |
433 | case SSL_ERROR_WANT_READ: | |
434 | case SSL_ERROR_WANT_WRITE: | |
435 | { | |
436 | F->ssl_errno = get_last_err(); | |
437 | rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE, | |
438 | rb_ssl_tryconn_cb, sconn); | |
439 | return; | |
440 | } | |
441 | default: | |
442 | F->ssl_errno = get_last_err(); | |
443 | rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn); | |
444 | return; | |
445 | } | |
446 | } | |
447 | else | |
448 | { | |
449 | rb_ssl_connect_realcb(F, RB_OK, sconn); | |
450 | } | |
451 | } | |
452 | } | |
453 | ||
454 | static void | |
455 | rb_ssl_tryconn(rb_fde_t *F, int status, void *data) | |
456 | { | |
457 | struct ssl_connect *sconn = data; | |
458 | int ssl_err; | |
459 | if(status != RB_OK) | |
460 | { | |
461 | rb_ssl_connect_realcb(F, status, sconn); | |
462 | return; | |
463 | } | |
464 | ||
465 | F->type |= RB_FD_SSL; | |
466 | F->ssl = SSL_new(ssl_client_ctx); | |
467 | SSL_set_fd((SSL *) F->ssl, F->fd); | |
468 | rb_setup_ssl_cb(F); | |
469 | rb_settimeout(F, sconn->timeout, rb_ssl_tryconn_timeout_cb, sconn); | |
470 | if((ssl_err = SSL_connect((SSL *) F->ssl)) <= 0) | |
471 | { | |
472 | switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err)) | |
473 | { | |
474 | case SSL_ERROR_SYSCALL: | |
475 | if(rb_ignore_errno(errno)) | |
476 | case SSL_ERROR_WANT_READ: | |
477 | case SSL_ERROR_WANT_WRITE: | |
478 | { | |
479 | F->ssl_errno = get_last_err(); | |
480 | rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE, | |
481 | rb_ssl_tryconn_cb, sconn); | |
482 | return; | |
483 | } | |
484 | default: | |
485 | F->ssl_errno = get_last_err(); | |
486 | rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn); | |
487 | return; | |
488 | } | |
489 | } | |
490 | else | |
491 | { | |
492 | rb_ssl_connect_realcb(F, RB_OK, sconn); | |
493 | } | |
494 | } | |
495 | ||
496 | void | |
497 | rb_connect_tcp_ssl(rb_fde_t *F, struct sockaddr *dest, | |
498 | struct sockaddr *clocal, int socklen, CNCB * callback, void *data, int timeout) | |
499 | { | |
500 | struct ssl_connect *sconn; | |
501 | if(F == NULL) | |
502 | return; | |
503 | ||
504 | sconn = rb_malloc(sizeof(struct ssl_connect)); | |
505 | sconn->data = data; | |
506 | sconn->callback = callback; | |
507 | sconn->timeout = timeout; | |
508 | rb_connect_tcp(F, dest, clocal, socklen, rb_ssl_tryconn, sconn, timeout); | |
509 | ||
510 | } | |
511 | ||
512 | void | |
513 | rb_ssl_start_connected(rb_fde_t *F, CNCB * callback, void *data, int timeout) | |
514 | { | |
515 | struct ssl_connect *sconn; | |
516 | int ssl_err; | |
517 | if(F == NULL) | |
518 | return; | |
519 | ||
520 | sconn = rb_malloc(sizeof(struct ssl_connect)); | |
521 | sconn->data = data; | |
522 | sconn->callback = callback; | |
523 | sconn->timeout = timeout; | |
524 | F->connect = rb_malloc(sizeof(struct conndata)); | |
525 | F->connect->callback = callback; | |
526 | F->connect->data = data; | |
527 | F->type |= RB_FD_SSL; | |
528 | F->ssl = SSL_new(ssl_client_ctx); | |
529 | ||
530 | SSL_set_fd((SSL *) F->ssl, F->fd); | |
531 | rb_setup_ssl_cb(F); | |
532 | rb_settimeout(F, sconn->timeout, rb_ssl_tryconn_timeout_cb, sconn); | |
533 | if((ssl_err = SSL_connect((SSL *) F->ssl)) <= 0) | |
534 | { | |
535 | switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err)) | |
536 | { | |
537 | case SSL_ERROR_SYSCALL: | |
538 | if(rb_ignore_errno(errno)) | |
539 | case SSL_ERROR_WANT_READ: | |
540 | case SSL_ERROR_WANT_WRITE: | |
541 | { | |
542 | F->ssl_errno = get_last_err(); | |
543 | rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE, | |
544 | rb_ssl_tryconn_cb, sconn); | |
545 | return; | |
546 | } | |
547 | default: | |
548 | F->ssl_errno = get_last_err(); | |
549 | rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn); | |
550 | return; | |
551 | } | |
552 | } | |
553 | else | |
554 | { | |
555 | rb_ssl_connect_realcb(F, RB_OK, sconn); | |
556 | } | |
557 | } | |
558 | ||
559 | int | |
560 | rb_init_prng(const char *path, prng_seed_t seed_type) | |
561 | { | |
562 | if(seed_type == RB_PRNG_DEFAULT) | |
563 | { | |
564 | #ifdef _WIN32 | |
565 | RAND_screen(); | |
566 | #endif | |
567 | return RAND_status(); | |
568 | } | |
569 | if(path == NULL) | |
570 | return RAND_status(); | |
571 | ||
572 | switch (seed_type) | |
573 | { | |
574 | case RB_PRNG_EGD: | |
575 | if(RAND_egd(path) == -1) | |
576 | return -1; | |
577 | break; | |
578 | case RB_PRNG_FILE: | |
579 | if(RAND_load_file(path, -1) == -1) | |
580 | return -1; | |
581 | break; | |
582 | #ifdef _WIN32 | |
583 | case RB_PRNGWIN32: | |
584 | RAND_screen(); | |
585 | break; | |
586 | #endif | |
587 | default: | |
588 | return -1; | |
589 | } | |
590 | ||
591 | return RAND_status(); | |
592 | } | |
593 | ||
594 | int | |
595 | rb_get_random(void *buf, size_t length) | |
596 | { | |
597 | int ret; | |
598 | ||
599 | if((ret = RAND_bytes(buf, length)) == 0) | |
600 | { | |
601 | /* remove the error from the queue */ | |
602 | ERR_get_error(); | |
603 | } | |
604 | return ret; | |
605 | } | |
606 | ||
607 | int | |
608 | rb_get_pseudo_random(void *buf, size_t length) | |
609 | { | |
610 | int ret; | |
611 | ret = RAND_pseudo_bytes(buf, length); | |
612 | if(ret < 0) | |
613 | return 0; | |
614 | return 1; | |
615 | } | |
616 | ||
617 | const char * | |
618 | rb_get_ssl_strerror(rb_fde_t *F) | |
619 | { | |
620 | return get_ssl_error(F->ssl_errno); | |
621 | } | |
622 | ||
623 | int | |
624 | rb_get_ssl_certfp(rb_fde_t *F, uint8_t certfp[RB_SSL_CERTFP_LEN]) | |
625 | { | |
626 | X509 *cert; | |
627 | int res; | |
628 | ||
629 | if (F->ssl == NULL) | |
630 | return 0; | |
631 | ||
632 | cert = SSL_get_peer_certificate((SSL *) F->ssl); | |
633 | if(cert != NULL) | |
634 | { | |
635 | res = SSL_get_verify_result((SSL *) F->ssl); | |
636 | if(res == X509_V_OK || | |
637 | res == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN || | |
638 | res == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE || | |
639 | res == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) | |
640 | { | |
641 | memcpy(certfp, cert->sha1_hash, RB_SSL_CERTFP_LEN); | |
642 | return 1; | |
643 | } | |
644 | X509_free(cert); | |
645 | } | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
650 | int | |
651 | rb_supports_ssl(void) | |
652 | { | |
653 | return 1; | |
654 | } | |
655 | ||
656 | void | |
657 | rb_get_ssl_info(char *buf, size_t len) | |
658 | { | |
659 | rb_snprintf(buf, len, "Using SSL: %s compiled: 0x%lx, library 0x%lx", | |
660 | SSLeay_version(SSLEAY_VERSION), OPENSSL_VERSION_NUMBER, SSLeay()); | |
661 | } | |
662 | ||
663 | ||
664 | #endif /* HAVE_OPESSL */ |