summaryrefslogtreecommitdiff
path: root/src/lib/libssl/d1_srvr.c
diff options
context:
space:
mode:
authorcvs2svn <admin@example.com>2016-07-23 19:31:36 +0000
committercvs2svn <admin@example.com>2016-07-23 19:31:36 +0000
commit86c49b31af735796dfde37aa29473a30d36367db (patch)
treee9a354a92a348338fe2b361e2eda703cae23cfab /src/lib/libssl/d1_srvr.c
parent19d5fe348e8926bac4521c5807aa64c45b8f7a41 (diff)
downloadopenbsd-OPENBSD_6_0_BASE.tar.gz
openbsd-OPENBSD_6_0_BASE.tar.bz2
openbsd-OPENBSD_6_0_BASE.zip
This commit was manufactured by cvs2git to create tag 'OPENBSD_6_0_BASE'.OPENBSD_6_0_BASE
Diffstat (limited to 'src/lib/libssl/d1_srvr.c')
-rw-r--r--src/lib/libssl/d1_srvr.c751
1 files changed, 0 insertions, 751 deletions
diff --git a/src/lib/libssl/d1_srvr.c b/src/lib/libssl/d1_srvr.c
deleted file mode 100644
index f6664237ae..0000000000
--- a/src/lib/libssl/d1_srvr.c
+++ /dev/null
@@ -1,751 +0,0 @@
1/* $OpenBSD: d1_srvr.c,v 1.67 2015/09/13 09:20:19 jsing Exp $ */
2/*
3 * DTLS implementation written by Nagendra Modadugu
4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5 */
6/* ====================================================================
7 * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * openssl-core@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
60 * All rights reserved.
61 *
62 * This package is an SSL implementation written
63 * by Eric Young (eay@cryptsoft.com).
64 * The implementation was written so as to conform with Netscapes SSL.
65 *
66 * This library is free for commercial and non-commercial use as long as
67 * the following conditions are aheared to. The following conditions
68 * apply to all code found in this distribution, be it the RC4, RSA,
69 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
70 * included with this distribution is covered by the same copyright terms
71 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
72 *
73 * Copyright remains Eric Young's, and as such any Copyright notices in
74 * the code are not to be removed.
75 * If this package is used in a product, Eric Young should be given attribution
76 * as the author of the parts of the library used.
77 * This can be in the form of a textual message at program startup or
78 * in documentation (online or textual) provided with the package.
79 *
80 * Redistribution and use in source and binary forms, with or without
81 * modification, are permitted provided that the following conditions
82 * are met:
83 * 1. Redistributions of source code must retain the copyright
84 * notice, this list of conditions and the following disclaimer.
85 * 2. Redistributions in binary form must reproduce the above copyright
86 * notice, this list of conditions and the following disclaimer in the
87 * documentation and/or other materials provided with the distribution.
88 * 3. All advertising materials mentioning features or use of this software
89 * must display the following acknowledgement:
90 * "This product includes cryptographic software written by
91 * Eric Young (eay@cryptsoft.com)"
92 * The word 'cryptographic' can be left out if the rouines from the library
93 * being used are not cryptographic related :-).
94 * 4. If you include any Windows specific code (or a derivative thereof) from
95 * the apps directory (application code) you must include an acknowledgement:
96 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
97 *
98 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
99 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
100 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
101 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
102 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
103 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
104 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
105 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
106 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
107 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
108 * SUCH DAMAGE.
109 *
110 * The licence and distribution terms for any publically available version or
111 * derivative of this code cannot be changed. i.e. this code cannot simply be
112 * copied and put under another distribution licence
113 * [including the GNU Public Licence.]
114 */
115
116#include <stdio.h>
117
118#include "ssl_locl.h"
119
120#include <openssl/bn.h>
121#include <openssl/buffer.h>
122#include <openssl/dh.h>
123#include <openssl/evp.h>
124#include <openssl/md5.h>
125#include <openssl/objects.h>
126#include <openssl/x509.h>
127
128static const SSL_METHOD *dtls1_get_server_method(int ver);
129static int dtls1_send_hello_verify_request(SSL *s);
130
131const SSL_METHOD DTLSv1_server_method_data = {
132 .version = DTLS1_VERSION,
133 .ssl_new = dtls1_new,
134 .ssl_clear = dtls1_clear,
135 .ssl_free = dtls1_free,
136 .ssl_accept = dtls1_accept,
137 .ssl_connect = ssl_undefined_function,
138 .ssl_read = ssl3_read,
139 .ssl_peek = ssl3_peek,
140 .ssl_write = ssl3_write,
141 .ssl_shutdown = dtls1_shutdown,
142 .ssl_renegotiate = ssl3_renegotiate,
143 .ssl_renegotiate_check = ssl3_renegotiate_check,
144 .ssl_get_message = dtls1_get_message,
145 .ssl_read_bytes = dtls1_read_bytes,
146 .ssl_write_bytes = dtls1_write_app_data_bytes,
147 .ssl_dispatch_alert = dtls1_dispatch_alert,
148 .ssl_ctrl = dtls1_ctrl,
149 .ssl_ctx_ctrl = ssl3_ctx_ctrl,
150 .get_cipher_by_char = ssl3_get_cipher_by_char,
151 .put_cipher_by_char = ssl3_put_cipher_by_char,
152 .ssl_pending = ssl3_pending,
153 .num_ciphers = ssl3_num_ciphers,
154 .get_cipher = dtls1_get_cipher,
155 .get_ssl_method = dtls1_get_server_method,
156 .get_timeout = dtls1_default_timeout,
157 .ssl3_enc = &DTLSv1_enc_data,
158 .ssl_version = ssl_undefined_void_function,
159 .ssl_callback_ctrl = ssl3_callback_ctrl,
160 .ssl_ctx_callback_ctrl = ssl3_ctx_callback_ctrl,
161};
162
163const SSL_METHOD *
164DTLSv1_server_method(void)
165{
166 return &DTLSv1_server_method_data;
167}
168
169static const SSL_METHOD *
170dtls1_get_server_method(int ver)
171{
172 if (ver == DTLS1_VERSION)
173 return (DTLSv1_server_method());
174 return (NULL);
175}
176
177int
178dtls1_accept(SSL *s)
179{
180 void (*cb)(const SSL *ssl, int type, int val) = NULL;
181 unsigned long alg_k;
182 int ret = -1;
183 int new_state, state, skip = 0;
184 int listen;
185
186 ERR_clear_error();
187 errno = 0;
188
189 if (s->info_callback != NULL)
190 cb = s->info_callback;
191 else if (s->ctx->info_callback != NULL)
192 cb = s->ctx->info_callback;
193
194 listen = s->d1->listen;
195
196 /* init things to blank */
197 s->in_handshake++;
198 if (!SSL_in_init(s) || SSL_in_before(s))
199 SSL_clear(s);
200
201 s->d1->listen = listen;
202
203 if (s->cert == NULL) {
204 SSLerr(SSL_F_DTLS1_ACCEPT, SSL_R_NO_CERTIFICATE_SET);
205 ret = -1;
206 goto end;
207 }
208
209 for (;;) {
210 state = s->state;
211
212 switch (s->state) {
213 case SSL_ST_RENEGOTIATE:
214 s->renegotiate = 1;
215 /* s->state=SSL_ST_ACCEPT; */
216
217 case SSL_ST_BEFORE:
218 case SSL_ST_ACCEPT:
219 case SSL_ST_BEFORE|SSL_ST_ACCEPT:
220 case SSL_ST_OK|SSL_ST_ACCEPT:
221
222 s->server = 1;
223 if (cb != NULL)
224 cb(s, SSL_CB_HANDSHAKE_START, 1);
225
226 if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00)) {
227 SSLerr(SSL_F_DTLS1_ACCEPT, ERR_R_INTERNAL_ERROR);
228 ret = -1;
229 goto end;
230 }
231 s->type = SSL_ST_ACCEPT;
232
233 if (!ssl3_setup_init_buffer(s)) {
234 ret = -1;
235 goto end;
236 }
237 if (!ssl3_setup_buffers(s)) {
238 ret = -1;
239 goto end;
240 }
241
242 s->init_num = 0;
243
244 if (s->state != SSL_ST_RENEGOTIATE) {
245 /* Ok, we now need to push on a buffering BIO so that
246 * the output is sent in a way that TCP likes :-)
247 * ...but not with SCTP :-)
248 */
249 if (!ssl_init_wbio_buffer(s, 1)) {
250 ret = -1;
251 goto end;
252 }
253
254 if (!tls1_init_finished_mac(s)) {
255 ret = -1;
256 goto end;
257 }
258
259 s->state = SSL3_ST_SR_CLNT_HELLO_A;
260 s->ctx->stats.sess_accept++;
261 } else {
262 /* s->state == SSL_ST_RENEGOTIATE,
263 * we will just send a HelloRequest */
264 s->ctx->stats.sess_accept_renegotiate++;
265 s->state = SSL3_ST_SW_HELLO_REQ_A;
266 }
267
268 break;
269
270 case SSL3_ST_SW_HELLO_REQ_A:
271 case SSL3_ST_SW_HELLO_REQ_B:
272
273 s->shutdown = 0;
274 dtls1_clear_record_buffer(s);
275 dtls1_start_timer(s);
276 ret = ssl3_send_hello_request(s);
277 if (ret <= 0)
278 goto end;
279 s->s3->tmp.next_state = SSL3_ST_SR_CLNT_HELLO_A;
280 s->state = SSL3_ST_SW_FLUSH;
281 s->init_num = 0;
282
283 if (!tls1_init_finished_mac(s)) {
284 ret = -1;
285 goto end;
286 }
287 break;
288
289 case SSL3_ST_SW_HELLO_REQ_C:
290 s->state = SSL_ST_OK;
291 break;
292
293 case SSL3_ST_SR_CLNT_HELLO_A:
294 case SSL3_ST_SR_CLNT_HELLO_B:
295 case SSL3_ST_SR_CLNT_HELLO_C:
296
297 s->shutdown = 0;
298 ret = ssl3_get_client_hello(s);
299 if (ret <= 0)
300 goto end;
301 dtls1_stop_timer(s);
302
303 if (ret == 1 && (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE))
304 s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A;
305 else
306 s->state = SSL3_ST_SW_SRVR_HELLO_A;
307
308 s->init_num = 0;
309
310 /* Reflect ClientHello sequence to remain stateless while listening */
311 if (listen) {
312 memcpy(s->s3->write_sequence, s->s3->read_sequence, sizeof(s->s3->write_sequence));
313 }
314
315 /* If we're just listening, stop here */
316 if (listen && s->state == SSL3_ST_SW_SRVR_HELLO_A) {
317 ret = 2;
318 s->d1->listen = 0;
319 /* Set expected sequence numbers
320 * to continue the handshake.
321 */
322 s->d1->handshake_read_seq = 2;
323 s->d1->handshake_write_seq = 1;
324 s->d1->next_handshake_write_seq = 1;
325 goto end;
326 }
327
328 break;
329
330 case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A:
331 case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B:
332
333 ret = dtls1_send_hello_verify_request(s);
334 if (ret <= 0)
335 goto end;
336 s->state = SSL3_ST_SW_FLUSH;
337 s->s3->tmp.next_state = SSL3_ST_SR_CLNT_HELLO_A;
338
339 /* HelloVerifyRequest resets Finished MAC */
340 if (!tls1_init_finished_mac(s)) {
341 ret = -1;
342 goto end;
343 }
344 break;
345
346
347 case SSL3_ST_SW_SRVR_HELLO_A:
348 case SSL3_ST_SW_SRVR_HELLO_B:
349 s->renegotiate = 2;
350 dtls1_start_timer(s);
351 ret = ssl3_send_server_hello(s);
352 if (ret <= 0)
353 goto end;
354
355 if (s->hit) {
356 if (s->tlsext_ticket_expected)
357 s->state = SSL3_ST_SW_SESSION_TICKET_A;
358 else
359 s->state = SSL3_ST_SW_CHANGE_A;
360 } else
361 s->state = SSL3_ST_SW_CERT_A;
362 s->init_num = 0;
363 break;
364
365 case SSL3_ST_SW_CERT_A:
366 case SSL3_ST_SW_CERT_B:
367 /* Check if it is anon DH. */
368 if (!(s->s3->tmp.new_cipher->algorithm_auth &
369 SSL_aNULL)) {
370 dtls1_start_timer(s);
371 ret = dtls1_send_server_certificate(s);
372 if (ret <= 0)
373 goto end;
374 if (s->tlsext_status_expected)
375 s->state = SSL3_ST_SW_CERT_STATUS_A;
376 else
377 s->state = SSL3_ST_SW_KEY_EXCH_A;
378 } else {
379 skip = 1;
380 s->state = SSL3_ST_SW_KEY_EXCH_A;
381 }
382 s->init_num = 0;
383 break;
384
385 case SSL3_ST_SW_KEY_EXCH_A:
386 case SSL3_ST_SW_KEY_EXCH_B:
387 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
388
389 /* Only send if using a DH key exchange. */
390 if (alg_k & (SSL_kDHE|SSL_kECDHE)) {
391 dtls1_start_timer(s);
392 ret = ssl3_send_server_key_exchange(s);
393 if (ret <= 0)
394 goto end;
395 } else
396 skip = 1;
397
398 s->state = SSL3_ST_SW_CERT_REQ_A;
399 s->init_num = 0;
400 break;
401
402 case SSL3_ST_SW_CERT_REQ_A:
403 case SSL3_ST_SW_CERT_REQ_B:
404 /*
405 * Determine whether or not we need to request a
406 * certificate.
407 *
408 * Do not request a certificate if:
409 *
410 * - We did not ask for it (SSL_VERIFY_PEER is unset).
411 *
412 * - SSL_VERIFY_CLIENT_ONCE is set and we are
413 * renegotiating.
414 *
415 * - We are using an anonymous ciphersuites
416 * (see section "Certificate request" in SSL 3 drafts
417 * and in RFC 2246) ... except when the application
418 * insists on verification (against the specs, but
419 * s3_clnt.c accepts this for SSL 3).
420 */
421 if (!(s->verify_mode & SSL_VERIFY_PEER) ||
422 ((s->session->peer != NULL) &&
423 (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)) ||
424 ((s->s3->tmp.new_cipher->algorithm_auth &
425 SSL_aNULL) && !(s->verify_mode &
426 SSL_VERIFY_FAIL_IF_NO_PEER_CERT))) {
427 /* no cert request */
428 skip = 1;
429 s->s3->tmp.cert_request = 0;
430 s->state = SSL3_ST_SW_SRVR_DONE_A;
431 } else {
432 s->s3->tmp.cert_request = 1;
433 dtls1_start_timer(s);
434 ret = ssl3_send_certificate_request(s);
435 if (ret <= 0)
436 goto end;
437 s->state = SSL3_ST_SW_SRVR_DONE_A;
438 s->init_num = 0;
439 }
440 break;
441
442 case SSL3_ST_SW_SRVR_DONE_A:
443 case SSL3_ST_SW_SRVR_DONE_B:
444 dtls1_start_timer(s);
445 ret = ssl3_send_server_done(s);
446 if (ret <= 0)
447 goto end;
448 s->s3->tmp.next_state = SSL3_ST_SR_CERT_A;
449 s->state = SSL3_ST_SW_FLUSH;
450 s->init_num = 0;
451 break;
452
453 case SSL3_ST_SW_FLUSH:
454 s->rwstate = SSL_WRITING;
455 if (BIO_flush(s->wbio) <= 0) {
456 /* If the write error was fatal, stop trying */
457 if (!BIO_should_retry(s->wbio)) {
458 s->rwstate = SSL_NOTHING;
459 s->state = s->s3->tmp.next_state;
460 }
461
462 ret = -1;
463 goto end;
464 }
465 s->rwstate = SSL_NOTHING;
466 s->state = s->s3->tmp.next_state;
467 break;
468
469 case SSL3_ST_SR_CERT_A:
470 case SSL3_ST_SR_CERT_B:
471 if (s->s3->tmp.cert_request) {
472 ret = ssl3_get_client_certificate(s);
473 if (ret <= 0)
474 goto end;
475 }
476 s->init_num = 0;
477 s->state = SSL3_ST_SR_KEY_EXCH_A;
478 break;
479
480 case SSL3_ST_SR_KEY_EXCH_A:
481 case SSL3_ST_SR_KEY_EXCH_B:
482 ret = ssl3_get_client_key_exchange(s);
483 if (ret <= 0)
484 goto end;
485
486 s->state = SSL3_ST_SR_CERT_VRFY_A;
487 s->init_num = 0;
488
489 if (ret == 2) {
490 /* For the ECDH ciphersuites when
491 * the client sends its ECDH pub key in
492 * a certificate, the CertificateVerify
493 * message is not sent.
494 */
495 s->state = SSL3_ST_SR_FINISHED_A;
496 s->init_num = 0;
497 } else if (SSL_USE_SIGALGS(s)) {
498 s->state = SSL3_ST_SR_CERT_VRFY_A;
499 s->init_num = 0;
500 if (!s->session->peer)
501 break;
502
503 /*
504 * For sigalgs freeze the handshake buffer
505 * at this point and digest cached records.
506 */
507 if (!s->s3->handshake_buffer) {
508 SSLerr(SSL_F_SSL3_ACCEPT,
509 ERR_R_INTERNAL_ERROR);
510 ret = -1;
511 goto end;
512 }
513 s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE;
514 if (!tls1_digest_cached_records(s)) {
515 ret = -1;
516 goto end;
517 }
518 } else {
519 s->state = SSL3_ST_SR_CERT_VRFY_A;
520 s->init_num = 0;
521
522 /* We need to get hashes here so if there is
523 * a client cert, it can be verified */
524 s->method->ssl3_enc->cert_verify_mac(s,
525 NID_md5, &(s->s3->tmp.cert_verify_md[0]));
526 s->method->ssl3_enc->cert_verify_mac(s,
527 NID_sha1,
528 &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
529 }
530 break;
531
532 case SSL3_ST_SR_CERT_VRFY_A:
533 case SSL3_ST_SR_CERT_VRFY_B:
534
535 s->d1->change_cipher_spec_ok = 1;
536 /* we should decide if we expected this one */
537 ret = ssl3_get_cert_verify(s);
538 if (ret <= 0)
539 goto end;
540 s->state = SSL3_ST_SR_FINISHED_A;
541 s->init_num = 0;
542 break;
543
544 case SSL3_ST_SR_FINISHED_A:
545 case SSL3_ST_SR_FINISHED_B:
546 s->d1->change_cipher_spec_ok = 1;
547 ret = ssl3_get_finished(s, SSL3_ST_SR_FINISHED_A,
548 SSL3_ST_SR_FINISHED_B);
549 if (ret <= 0)
550 goto end;
551 dtls1_stop_timer(s);
552 if (s->hit)
553 s->state = SSL_ST_OK;
554 else if (s->tlsext_ticket_expected)
555 s->state = SSL3_ST_SW_SESSION_TICKET_A;
556 else
557 s->state = SSL3_ST_SW_CHANGE_A;
558 s->init_num = 0;
559 break;
560
561 case SSL3_ST_SW_SESSION_TICKET_A:
562 case SSL3_ST_SW_SESSION_TICKET_B:
563 ret = ssl3_send_newsession_ticket(s);
564 if (ret <= 0)
565 goto end;
566 s->state = SSL3_ST_SW_CHANGE_A;
567 s->init_num = 0;
568 break;
569
570 case SSL3_ST_SW_CERT_STATUS_A:
571 case SSL3_ST_SW_CERT_STATUS_B:
572 ret = ssl3_send_cert_status(s);
573 if (ret <= 0)
574 goto end;
575 s->state = SSL3_ST_SW_KEY_EXCH_A;
576 s->init_num = 0;
577 break;
578
579
580 case SSL3_ST_SW_CHANGE_A:
581 case SSL3_ST_SW_CHANGE_B:
582
583 s->session->cipher = s->s3->tmp.new_cipher;
584 if (!s->method->ssl3_enc->setup_key_block(s)) {
585 ret = -1;
586 goto end;
587 }
588
589 ret = dtls1_send_change_cipher_spec(s,
590 SSL3_ST_SW_CHANGE_A, SSL3_ST_SW_CHANGE_B);
591
592 if (ret <= 0)
593 goto end;
594
595
596 s->state = SSL3_ST_SW_FINISHED_A;
597 s->init_num = 0;
598
599 if (!s->method->ssl3_enc->change_cipher_state(s,
600 SSL3_CHANGE_CIPHER_SERVER_WRITE)) {
601 ret = -1;
602 goto end;
603 }
604
605 dtls1_reset_seq_numbers(s, SSL3_CC_WRITE);
606 break;
607
608 case SSL3_ST_SW_FINISHED_A:
609 case SSL3_ST_SW_FINISHED_B:
610 ret = ssl3_send_finished(s,
611 SSL3_ST_SW_FINISHED_A, SSL3_ST_SW_FINISHED_B,
612 s->method->ssl3_enc->server_finished_label,
613 s->method->ssl3_enc->server_finished_label_len);
614 if (ret <= 0)
615 goto end;
616 s->state = SSL3_ST_SW_FLUSH;
617 if (s->hit) {
618 s->s3->tmp.next_state = SSL3_ST_SR_FINISHED_A;
619
620 } else {
621 s->s3->tmp.next_state = SSL_ST_OK;
622 }
623 s->init_num = 0;
624 break;
625
626 case SSL_ST_OK:
627 /* clean a few things up */
628 tls1_cleanup_key_block(s);
629
630 /* remove buffering on output */
631 ssl_free_wbio_buffer(s);
632
633 s->init_num = 0;
634
635 if (s->renegotiate == 2) /* skipped if we just sent a HelloRequest */
636 {
637 s->renegotiate = 0;
638 s->new_session = 0;
639
640 ssl_update_cache(s, SSL_SESS_CACHE_SERVER);
641
642 s->ctx->stats.sess_accept_good++;
643 /* s->server=1; */
644 s->handshake_func = dtls1_accept;
645
646 if (cb != NULL)
647 cb(s, SSL_CB_HANDSHAKE_DONE, 1);
648 }
649
650 ret = 1;
651
652 /* done handshaking, next message is client hello */
653 s->d1->handshake_read_seq = 0;
654 /* next message is server hello */
655 s->d1->handshake_write_seq = 0;
656 s->d1->next_handshake_write_seq = 0;
657 goto end;
658 /* break; */
659
660 default:
661 SSLerr(SSL_F_DTLS1_ACCEPT, SSL_R_UNKNOWN_STATE);
662 ret = -1;
663 goto end;
664 /* break; */
665 }
666
667 if (!s->s3->tmp.reuse_message && !skip) {
668 if (s->debug) {
669 if ((ret = BIO_flush(s->wbio)) <= 0)
670 goto end;
671 }
672
673 if ((cb != NULL) && (s->state != state)) {
674 new_state = s->state;
675 s->state = state;
676 cb(s, SSL_CB_ACCEPT_LOOP, 1);
677 s->state = new_state;
678 }
679 }
680 skip = 0;
681 }
682end:
683 /* BIO_flush(s->wbio); */
684
685 s->in_handshake--;
686
687 if (cb != NULL)
688 cb(s, SSL_CB_ACCEPT_EXIT, ret);
689
690 return (ret);
691}
692
693int
694dtls1_send_hello_verify_request(SSL *s)
695{
696 unsigned char *d, *p;
697
698 if (s->state == DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A) {
699 d = p = ssl3_handshake_msg_start(s,
700 DTLS1_MT_HELLO_VERIFY_REQUEST);
701
702 *(p++) = s->version >> 8;
703 *(p++) = s->version & 0xFF;
704
705 if (s->ctx->app_gen_cookie_cb == NULL ||
706 s->ctx->app_gen_cookie_cb(s, s->d1->cookie,
707 &(s->d1->cookie_len)) == 0) {
708 SSLerr(SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST,
709 ERR_R_INTERNAL_ERROR);
710 return 0;
711 }
712
713 *(p++) = (unsigned char) s->d1->cookie_len;
714 memcpy(p, s->d1->cookie, s->d1->cookie_len);
715 p += s->d1->cookie_len;
716
717 ssl3_handshake_msg_finish(s, p - d);
718
719 s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B;
720 }
721
722 /* s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B */
723 return (ssl3_handshake_write(s));
724}
725
726int
727dtls1_send_server_certificate(SSL *s)
728{
729 unsigned long l;
730 X509 *x;
731
732 if (s->state == SSL3_ST_SW_CERT_A) {
733 x = ssl_get_server_send_cert(s);
734 if (x == NULL) {
735 SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE,
736 ERR_R_INTERNAL_ERROR);
737 return (0);
738 }
739
740 l = dtls1_output_cert_chain(s, x);
741 s->state = SSL3_ST_SW_CERT_B;
742 s->init_num = (int)l;
743 s->init_off = 0;
744
745 /* buffer the message to handle re-xmits */
746 dtls1_buffer_message(s, 0);
747 }
748
749 /* SSL3_ST_SW_CERT_B */
750 return (dtls1_do_write(s, SSL3_RT_HANDSHAKE));
751}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-09 13:51:16 +0000