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-rw-r--r--src/lib/libssl/s23_srvr.c635
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diff --git a/src/lib/libssl/s23_srvr.c b/src/lib/libssl/s23_srvr.c
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1/* $OpenBSD: s23_srvr.c,v 1.41 2015/07/19 07:30:06 doug Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58/* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111
112#include <stdio.h>
113
114#include "ssl_locl.h"
115
116#include <openssl/buffer.h>
117#include <openssl/evp.h>
118#include <openssl/objects.h>
119
120static const SSL_METHOD *ssl23_get_server_method(int ver);
121int ssl23_get_client_hello(SSL *s);
122static const SSL_METHOD *tls_any_get_server_method(int ver);
123
124const SSL_METHOD SSLv23_server_method_data = {
125 .version = TLS1_2_VERSION,
126 .ssl_new = tls1_new,
127 .ssl_clear = tls1_clear,
128 .ssl_free = tls1_free,
129 .ssl_accept = ssl23_accept,
130 .ssl_connect = ssl_undefined_function,
131 .ssl_read = ssl23_read,
132 .ssl_peek = ssl23_peek,
133 .ssl_write = ssl23_write,
134 .ssl_shutdown = ssl_undefined_function,
135 .ssl_renegotiate = ssl_undefined_function,
136 .ssl_renegotiate_check = ssl_ok,
137 .ssl_get_message = ssl3_get_message,
138 .ssl_read_bytes = ssl3_read_bytes,
139 .ssl_write_bytes = ssl3_write_bytes,
140 .ssl_dispatch_alert = ssl3_dispatch_alert,
141 .ssl_ctrl = ssl3_ctrl,
142 .ssl_ctx_ctrl = ssl3_ctx_ctrl,
143 .get_cipher_by_char = ssl3_get_cipher_by_char,
144 .put_cipher_by_char = ssl3_put_cipher_by_char,
145 .ssl_pending = ssl_undefined_const_function,
146 .num_ciphers = ssl3_num_ciphers,
147 .get_cipher = ssl3_get_cipher,
148 .get_ssl_method = ssl23_get_server_method,
149 .get_timeout = ssl23_default_timeout,
150 .ssl3_enc = &ssl3_undef_enc_method,
151 .ssl_version = ssl_undefined_void_function,
152 .ssl_callback_ctrl = ssl3_callback_ctrl,
153 .ssl_ctx_callback_ctrl = ssl3_ctx_callback_ctrl,
154};
155
156const SSL_METHOD TLS_server_method_data = {
157 .version = TLS1_2_VERSION,
158 .ssl_new = tls1_new,
159 .ssl_clear = tls1_clear,
160 .ssl_free = tls1_free,
161 .ssl_accept = tls_any_accept,
162 .ssl_connect = ssl_undefined_function,
163 .ssl_read = ssl23_read,
164 .ssl_peek = ssl23_peek,
165 .ssl_write = ssl23_write,
166 .ssl_shutdown = ssl_undefined_function,
167 .ssl_renegotiate = ssl_undefined_function,
168 .ssl_renegotiate_check = ssl_ok,
169 .ssl_get_message = ssl3_get_message,
170 .ssl_read_bytes = ssl3_read_bytes,
171 .ssl_write_bytes = ssl3_write_bytes,
172 .ssl_dispatch_alert = ssl3_dispatch_alert,
173 .ssl_ctrl = ssl3_ctrl,
174 .ssl_ctx_ctrl = ssl3_ctx_ctrl,
175 .get_cipher_by_char = ssl3_get_cipher_by_char,
176 .put_cipher_by_char = ssl3_put_cipher_by_char,
177 .ssl_pending = ssl_undefined_const_function,
178 .num_ciphers = ssl3_num_ciphers,
179 .get_cipher = ssl3_get_cipher,
180 .get_ssl_method = tls_any_get_server_method,
181 .get_timeout = ssl23_default_timeout,
182 .ssl3_enc = &ssl3_undef_enc_method,
183 .ssl_version = ssl_undefined_void_function,
184 .ssl_callback_ctrl = ssl3_callback_ctrl,
185 .ssl_ctx_callback_ctrl = ssl3_ctx_callback_ctrl,
186};
187
188const SSL_METHOD *
189SSLv23_server_method(void)
190{
191 return &SSLv23_server_method_data;
192}
193
194static const SSL_METHOD *
195ssl23_get_server_method(int ver)
196{
197 if (ver == SSL3_VERSION)
198 return (SSLv3_server_method());
199 if (ver == TLS1_VERSION)
200 return (TLSv1_server_method());
201 if (ver == TLS1_1_VERSION)
202 return (TLSv1_1_server_method());
203 if (ver == TLS1_2_VERSION)
204 return (TLSv1_2_server_method());
205 return (NULL);
206}
207
208int
209ssl23_accept(SSL *s)
210{
211 void (*cb)(const SSL *ssl, int type, int val) = NULL;
212 int ret = -1;
213 int new_state, state;
214
215 ERR_clear_error();
216 errno = 0;
217
218 if (s->info_callback != NULL)
219 cb = s->info_callback;
220 else if (s->ctx->info_callback != NULL)
221 cb = s->ctx->info_callback;
222
223 s->in_handshake++;
224 if (!SSL_in_init(s) || SSL_in_before(s))
225 SSL_clear(s);
226
227 for (;;) {
228 state = s->state;
229
230 switch (s->state) {
231 case SSL_ST_BEFORE:
232 case SSL_ST_ACCEPT:
233 case SSL_ST_BEFORE|SSL_ST_ACCEPT:
234 case SSL_ST_OK|SSL_ST_ACCEPT:
235
236 s->server = 1;
237 if (cb != NULL)
238 cb(s, SSL_CB_HANDSHAKE_START, 1);
239
240 /* s->version=SSL3_VERSION; */
241 s->type = SSL_ST_ACCEPT;
242
243 if (!ssl3_setup_init_buffer(s)) {
244 ret = -1;
245 goto end;
246 }
247 if (!ssl3_init_finished_mac(s)) {
248 ret = -1;
249 goto end;
250 }
251
252 s->state = SSL23_ST_SR_CLNT_HELLO_A;
253 s->ctx->stats.sess_accept++;
254 s->init_num = 0;
255 break;
256
257 case SSL23_ST_SR_CLNT_HELLO_A:
258 case SSL23_ST_SR_CLNT_HELLO_B:
259
260 s->shutdown = 0;
261 ret = ssl23_get_client_hello(s);
262 if (ret >= 0)
263 cb = NULL;
264 goto end;
265 /* break; */
266
267 default:
268 SSLerr(SSL_F_SSL23_ACCEPT, SSL_R_UNKNOWN_STATE);
269 ret = -1;
270 goto end;
271 /* break; */
272 }
273
274 if ((cb != NULL) && (s->state != state)) {
275 new_state = s->state;
276 s->state = state;
277 cb(s, SSL_CB_ACCEPT_LOOP, 1);
278 s->state = new_state;
279 }
280 }
281
282end:
283 s->in_handshake--;
284 if (cb != NULL)
285 cb(s, SSL_CB_ACCEPT_EXIT, ret);
286
287 return (ret);
288}
289
290
291int
292ssl23_get_client_hello(SSL *s)
293{
294 char buf[11];
295 /*
296 * sizeof(buf) == 11, because we'll need to request this many bytes in
297 * the initial read.
298 * We can detect SSL 3.0/TLS 1.0 Client Hellos ('type == 3') correctly
299 * only when the following is in a single record, which is not
300 * guaranteed by the protocol specification:
301 * Byte Content
302 * 0 type \
303 * 1/2 version > record header
304 * 3/4 length /
305 * 5 msg_type \
306 * 6-8 length > Client Hello message
307 * 9/10 client_version /
308 */
309 unsigned char *p, *d, *d_len, *dd;
310 unsigned int i;
311 unsigned int csl, sil, cl;
312 int n = 0, j;
313 int type = 0;
314 int v[2];
315
316 if (s->state == SSL23_ST_SR_CLNT_HELLO_A) {
317 /* read the initial header */
318 v[0] = v[1] = 0;
319
320 if (!ssl3_setup_buffers(s))
321 return -1;
322
323 n = ssl23_read_bytes(s, sizeof buf);
324 if (n != sizeof buf)
325 return(n);
326
327 p = s->packet;
328
329 memcpy(buf, p, n);
330
331 if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO)) {
332 /*
333 * SSLv2 header
334 */
335 if ((p[3] == 0x00) && (p[4] == 0x02)) {
336 v[0] = p[3];
337 v[1] = p[4];
338 /* SSLv2 */
339 if (!(s->options & SSL_OP_NO_SSLv2))
340 type = 1;
341 } else if (p[3] == SSL3_VERSION_MAJOR) {
342 v[0] = p[3];
343 v[1] = p[4];
344 /* SSLv3/TLSv1 */
345 if (p[4] >= TLS1_VERSION_MINOR) {
346 if (p[4] >= TLS1_2_VERSION_MINOR &&
347 !(s->options & SSL_OP_NO_TLSv1_2)) {
348 s->version = TLS1_2_VERSION;
349 s->state = SSL23_ST_SR_CLNT_HELLO_B;
350 } else if (p[4] >= TLS1_1_VERSION_MINOR &&
351 !(s->options & SSL_OP_NO_TLSv1_1)) {
352 s->version = TLS1_1_VERSION;
353 /* type=2; */ /* done later to survive restarts */
354 s->state = SSL23_ST_SR_CLNT_HELLO_B;
355 } else if (!(s->options & SSL_OP_NO_TLSv1)) {
356 s->version = TLS1_VERSION;
357 /* type=2; */ /* done later to survive restarts */
358 s->state = SSL23_ST_SR_CLNT_HELLO_B;
359 } else if (!(s->options & SSL_OP_NO_SSLv3)) {
360 s->version = SSL3_VERSION;
361 /* type=2; */
362 s->state = SSL23_ST_SR_CLNT_HELLO_B;
363 } else if (!(s->options & SSL_OP_NO_SSLv2)) {
364 type = 1;
365 }
366 } else if (!(s->options & SSL_OP_NO_SSLv3)) {
367 s->version = SSL3_VERSION;
368 /* type=2; */
369 s->state = SSL23_ST_SR_CLNT_HELLO_B;
370 } else if (!(s->options & SSL_OP_NO_SSLv2))
371 type = 1;
372
373 }
374 } else if ((p[0] == SSL3_RT_HANDSHAKE) &&
375 (p[1] == SSL3_VERSION_MAJOR) &&
376 (p[5] == SSL3_MT_CLIENT_HELLO) &&
377 ((p[3] == 0 && p[4] < 5 /* silly record length? */) ||
378 (p[9] >= p[1]))) {
379 /*
380 * SSLv3 or tls1 header
381 */
382
383 v[0] = p[1]; /* major version (= SSL3_VERSION_MAJOR) */
384 /* We must look at client_version inside the Client Hello message
385 * to get the correct minor version.
386 * However if we have only a pathologically small fragment of the
387 * Client Hello message, this would be difficult, and we'd have
388 * to read more records to find out.
389 * No known SSL 3.0 client fragments ClientHello like this,
390 * so we simply reject such connections to avoid
391 * protocol version downgrade attacks. */
392 if (p[3] == 0 && p[4] < 6) {
393 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
394 SSL_R_RECORD_TOO_SMALL);
395 return -1;
396 }
397 /* if major version number > 3 set minor to a value
398 * which will use the highest version 3 we support.
399 * If TLS 2.0 ever appears we will need to revise
400 * this....
401 */
402 if (p[9] > SSL3_VERSION_MAJOR)
403 v[1] = 0xff;
404 else
405 v[1] = p[10]; /* minor version according to client_version */
406 if (v[1] >= TLS1_VERSION_MINOR) {
407 if (v[1] >= TLS1_2_VERSION_MINOR &&
408 !(s->options & SSL_OP_NO_TLSv1_2)) {
409 s->version = TLS1_2_VERSION;
410 type = 3;
411 } else if (v[1] >= TLS1_1_VERSION_MINOR &&
412 !(s->options & SSL_OP_NO_TLSv1_1)) {
413 s->version = TLS1_1_VERSION;
414 type = 3;
415 } else if (!(s->options & SSL_OP_NO_TLSv1)) {
416 s->version = TLS1_VERSION;
417 type = 3;
418 } else if (!(s->options & SSL_OP_NO_SSLv3)) {
419 s->version = SSL3_VERSION;
420 type = 3;
421 }
422 } else {
423 /* client requests SSL 3.0 */
424 if (!(s->options & SSL_OP_NO_SSLv3)) {
425 s->version = SSL3_VERSION;
426 type = 3;
427 } else if (!(s->options & SSL_OP_NO_TLSv1)) {
428 /* we won't be able to use TLS of course,
429 * but this will send an appropriate alert */
430 s->version = TLS1_VERSION;
431 type = 3;
432 }
433 }
434 }
435 else if ((strncmp("GET ", (char *)p, 4) == 0) ||
436 (strncmp("POST ",(char *)p, 5) == 0) ||
437 (strncmp("HEAD ",(char *)p, 5) == 0) ||
438 (strncmp("PUT ", (char *)p, 4) == 0)) {
439 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_HTTP_REQUEST);
440 return -1;
441 } else if (strncmp("CONNECT", (char *)p, 7) == 0) {
442 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_HTTPS_PROXY_REQUEST);
443 return -1;
444 }
445 }
446
447 if (s->state == SSL23_ST_SR_CLNT_HELLO_B) {
448 /* we have SSLv3/TLSv1 in an SSLv2 header
449 * (other cases skip this state) */
450
451 type = 2;
452 p = s->packet;
453 v[0] = p[3]; /* == SSL3_VERSION_MAJOR */
454 v[1] = p[4];
455
456 /* An SSLv3/TLSv1 backwards-compatible CLIENT-HELLO in an SSLv2
457 * header is sent directly on the wire, not wrapped as a TLS
458 * record. It's format is:
459 * Byte Content
460 * 0-1 msg_length
461 * 2 msg_type
462 * 3-4 version
463 * 5-6 cipher_spec_length
464 * 7-8 session_id_length
465 * 9-10 challenge_length
466 * ... ...
467 */
468 n = ((p[0] & 0x7f) << 8) | p[1];
469 if (n > (1024 * 4)) {
470 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_RECORD_TOO_LARGE);
471 return -1;
472 }
473 if (n < 9) {
474 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
475 SSL_R_RECORD_LENGTH_MISMATCH);
476 return -1;
477 }
478
479 j = ssl23_read_bytes(s, n + 2);
480 if (j != n + 2)
481 return -1;
482
483 ssl3_finish_mac(s, s->packet + 2, s->packet_length - 2);
484 if (s->msg_callback)
485 s->msg_callback(0, SSL2_VERSION, 0, s->packet + 2,
486 s->packet_length - 2, s, s->msg_callback_arg);
487
488 p = s->packet;
489 p += 5;
490 n2s(p, csl);
491 n2s(p, sil);
492 n2s(p, cl);
493 d = (unsigned char *)s->init_buf->data;
494 if ((csl + sil + cl + 11) != s->packet_length) {
495 /*
496 * We can't have TLS extensions in SSL 2.0 format
497 * Client Hello, can we ? Error condition should be
498 * '>' otherwise
499 */
500 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
501 SSL_R_RECORD_LENGTH_MISMATCH);
502 return -1;
503 }
504
505 /* record header: msg_type ... */
506 *(d++) = SSL3_MT_CLIENT_HELLO;
507 /* ... and length (actual value will be written later) */
508 d_len = d;
509 d += 3;
510
511 /* client_version */
512 *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */
513 *(d++) = v[1];
514
515 /* lets populate the random area */
516 /* get the challenge_length */
517 i = (cl > SSL3_RANDOM_SIZE) ? SSL3_RANDOM_SIZE : cl;
518 memset(d, 0, SSL3_RANDOM_SIZE);
519 memcpy(&(d[SSL3_RANDOM_SIZE - i]), &(p[csl + sil]), i);
520 d += SSL3_RANDOM_SIZE;
521
522 /* no session-id reuse */
523 *(d++) = 0;
524
525 /* ciphers */
526 j = 0;
527 dd = d;
528 d += 2;
529 for (i = 0; i < csl; i += 3) {
530 if (p[i] != 0)
531 continue;
532 *(d++) = p[i + 1];
533 *(d++) = p[i + 2];
534 j += 2;
535 }
536 s2n(j, dd);
537
538 /* add in (no) COMPRESSION */
539 *(d++) = 1;
540 *(d++) = 0;
541
542 i = (d - (unsigned char *)s->init_buf->data) - 4;
543 l2n3((long)i, d_len);
544
545 /* get the data reused from the init_buf */
546 s->s3->tmp.reuse_message = 1;
547 s->s3->tmp.message_type = SSL3_MT_CLIENT_HELLO;
548 s->s3->tmp.message_size = i;
549 }
550
551 /* imaginary new state (for program structure): */
552 /* s->state = SSL23_SR_CLNT_HELLO_C */
553
554 if (type == 1) {
555 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_UNSUPPORTED_PROTOCOL);
556 return -1;
557 }
558
559 if ((type == 2) || (type == 3)) {
560 /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */
561
562 if (!ssl_init_wbio_buffer(s, 1))
563 return -1;
564
565 /* we are in this state */
566 s->state = SSL3_ST_SR_CLNT_HELLO_A;
567
568 if (type == 3) {
569 /* put the 'n' bytes we have read into the input buffer
570 * for SSLv3 */
571 s->rstate = SSL_ST_READ_HEADER;
572 s->packet_length = n;
573 if (s->s3->rbuf.buf == NULL)
574 if (!ssl3_setup_read_buffer(s))
575 return -1;
576
577 s->packet = &(s->s3->rbuf.buf[0]);
578 memcpy(s->packet, buf, n);
579 s->s3->rbuf.left = n;
580 s->s3->rbuf.offset = 0;
581 } else {
582 s->packet_length = 0;
583 s->s3->rbuf.left = 0;
584 s->s3->rbuf.offset = 0;
585 }
586 if (s->version == TLS1_2_VERSION)
587 s->method = TLSv1_2_server_method();
588 else if (s->version == TLS1_1_VERSION)
589 s->method = TLSv1_1_server_method();
590 else if (s->version == TLS1_VERSION)
591 s->method = TLSv1_server_method();
592 else
593 s->method = SSLv3_server_method();
594 s->handshake_func = s->method->ssl_accept;
595 }
596
597 if ((type < 1) || (type > 3)) {
598 /* bad, very bad */
599 SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO, SSL_R_UNKNOWN_PROTOCOL);
600 return -1;
601 }
602 s->init_num = 0;
603
604 return (SSL_accept(s));
605}
606
607const SSL_METHOD *
608TLS_server_method(void)
609{
610 return &TLS_server_method_data;
611}
612
613static const SSL_METHOD *
614tls_any_get_server_method(int ver)
615{
616 if (ver == SSL3_VERSION)
617 return (NULL);
618 else
619 return ssl23_get_server_method(ver);
620}
621
622int
623tls_any_accept(SSL *s)
624{
625 int ret;
626 unsigned long old_options;
627
628 old_options = s->options;
629
630 s->options |= SSL_OP_NO_SSLv3;
631 ret = ssl23_accept(s);
632 s->options = old_options;
633
634 return ret;
635}
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