File: | src/lib/libssl/ssl_clnt.c |
Warning: | line 1605, column 2 Value stored to 'ret' is never read |
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1 | /* $OpenBSD: ssl_clnt.c,v 1.137 2022/01/11 19:03:15 jsing 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) 1998-2007 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 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. |
113 | * |
114 | * Portions of the attached software ("Contribution") are developed by |
115 | * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. |
116 | * |
117 | * The Contribution is licensed pursuant to the OpenSSL open source |
118 | * license provided above. |
119 | * |
120 | * ECC cipher suite support in OpenSSL originally written by |
121 | * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories. |
122 | * |
123 | */ |
124 | /* ==================================================================== |
125 | * Copyright 2005 Nokia. All rights reserved. |
126 | * |
127 | * The portions of the attached software ("Contribution") is developed by |
128 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source |
129 | * license. |
130 | * |
131 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of |
132 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites |
133 | * support (see RFC 4279) to OpenSSL. |
134 | * |
135 | * No patent licenses or other rights except those expressly stated in |
136 | * the OpenSSL open source license shall be deemed granted or received |
137 | * expressly, by implication, estoppel, or otherwise. |
138 | * |
139 | * No assurances are provided by Nokia that the Contribution does not |
140 | * infringe the patent or other intellectual property rights of any third |
141 | * party or that the license provides you with all the necessary rights |
142 | * to make use of the Contribution. |
143 | * |
144 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN |
145 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA |
146 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY |
147 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR |
148 | * OTHERWISE. |
149 | */ |
150 | |
151 | #include <limits.h> |
152 | #include <stdint.h> |
153 | #include <stdio.h> |
154 | |
155 | #include <openssl/bn.h> |
156 | #include <openssl/buffer.h> |
157 | #include <openssl/curve25519.h> |
158 | #include <openssl/dh.h> |
159 | #include <openssl/evp.h> |
160 | #include <openssl/md5.h> |
161 | #include <openssl/objects.h> |
162 | #include <openssl/opensslconf.h> |
163 | |
164 | #ifndef OPENSSL_NO_ENGINE |
165 | #include <openssl/engine.h> |
166 | #endif |
167 | #ifndef OPENSSL_NO_GOST |
168 | #include <openssl/gost.h> |
169 | #endif |
170 | |
171 | #include "bytestring.h" |
172 | #include "dtls_locl.h" |
173 | #include "ssl_locl.h" |
174 | #include "ssl_sigalgs.h" |
175 | #include "ssl_tlsext.h" |
176 | |
177 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b); |
178 | |
179 | int |
180 | ssl3_connect(SSL *s) |
181 | { |
182 | int new_state, state, skip = 0; |
183 | int ret = -1; |
184 | |
185 | ERR_clear_error(); |
186 | errno(*__errno()) = 0; |
187 | |
188 | s->internal->in_handshake++; |
189 | if (!SSL_in_init(s)(SSL_state((s))&(0x1000|0x2000)) || SSL_in_before(s)(SSL_state((s))&0x4000)) |
190 | SSL_clear(s); |
191 | |
192 | for (;;) { |
193 | state = S3I(s)(s->s3->internal)->hs.state; |
194 | |
195 | switch (S3I(s)(s->s3->internal)->hs.state) { |
196 | case SSL_ST_RENEGOTIATE(0x04|(0x1000|0x2000)): |
197 | s->internal->renegotiate = 1; |
198 | S3I(s)(s->s3->internal)->hs.state = SSL_ST_CONNECT0x1000; |
199 | s->ctx->internal->stats.sess_connect_renegotiate++; |
200 | /* break */ |
201 | case SSL_ST_BEFORE0x4000: |
202 | case SSL_ST_CONNECT0x1000: |
203 | case SSL_ST_BEFORE0x4000|SSL_ST_CONNECT0x1000: |
204 | case SSL_ST_OK0x03|SSL_ST_CONNECT0x1000: |
205 | |
206 | s->server = 0; |
207 | |
208 | ssl_info_callback(s, SSL_CB_HANDSHAKE_START0x10, 1); |
209 | |
210 | if (!ssl_legacy_stack_version(s, s->version)) { |
211 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 211); |
212 | ret = -1; |
213 | goto end; |
214 | } |
215 | |
216 | if (!ssl_supported_tls_version_range(s, |
217 | &S3I(s)(s->s3->internal)->hs.our_min_tls_version, |
218 | &S3I(s)(s->s3->internal)->hs.our_max_tls_version)) { |
219 | SSLerror(s, SSL_R_NO_PROTOCOLS_AVAILABLE)SSL_error_internal(s, 191, "/usr/src/lib/libssl/ssl_clnt.c", 219 ); |
220 | ret = -1; |
221 | goto end; |
222 | } |
223 | |
224 | if (!ssl3_setup_init_buffer(s)) { |
225 | ret = -1; |
226 | goto end; |
227 | } |
228 | if (!ssl3_setup_buffers(s)) { |
229 | ret = -1; |
230 | goto end; |
231 | } |
232 | if (!ssl_init_wbio_buffer(s, 0)) { |
233 | ret = -1; |
234 | goto end; |
235 | } |
236 | |
237 | /* don't push the buffering BIO quite yet */ |
238 | |
239 | if (!tls1_transcript_init(s)) { |
240 | ret = -1; |
241 | goto end; |
242 | } |
243 | |
244 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CLNT_HELLO_A(0x110|0x1000); |
245 | s->ctx->internal->stats.sess_connect++; |
246 | s->internal->init_num = 0; |
247 | |
248 | if (SSL_is_dtls(s)) { |
249 | /* mark client_random uninitialized */ |
250 | memset(s->s3->client_random, 0, |
251 | sizeof(s->s3->client_random)); |
252 | s->d1->send_cookie = 0; |
253 | s->internal->hit = 0; |
254 | } |
255 | break; |
256 | |
257 | case SSL3_ST_CW_CLNT_HELLO_A(0x110|0x1000): |
258 | case SSL3_ST_CW_CLNT_HELLO_B(0x111|0x1000): |
259 | s->internal->shutdown = 0; |
260 | |
261 | if (SSL_is_dtls(s)) { |
262 | /* every DTLS ClientHello resets Finished MAC */ |
263 | tls1_transcript_reset(s); |
264 | |
265 | dtls1_start_timer(s); |
266 | } |
267 | |
268 | ret = ssl3_send_client_hello(s); |
269 | if (ret <= 0) |
270 | goto end; |
271 | |
272 | if (SSL_is_dtls(s) && s->d1->send_cookie) { |
273 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_FLUSH(0x100|0x1000); |
274 | S3I(s)(s->s3->internal)->hs.tls12.next_state = SSL3_ST_CR_SRVR_HELLO_A(0x120|0x1000); |
275 | } else |
276 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_SRVR_HELLO_A(0x120|0x1000); |
277 | |
278 | s->internal->init_num = 0; |
279 | |
280 | /* turn on buffering for the next lot of output */ |
281 | if (s->bbio != s->wbio) |
282 | s->wbio = BIO_push(s->bbio, s->wbio); |
283 | |
284 | break; |
285 | |
286 | case SSL3_ST_CR_SRVR_HELLO_A(0x120|0x1000): |
287 | case SSL3_ST_CR_SRVR_HELLO_B(0x121|0x1000): |
288 | ret = ssl3_get_server_hello(s); |
289 | if (ret <= 0) |
290 | goto end; |
291 | |
292 | if (s->internal->hit) { |
293 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_FINISHED_A(0x1D0|0x1000); |
294 | if (!SSL_is_dtls(s)) { |
295 | if (s->internal->tlsext_ticket_expected) { |
296 | /* receive renewed session ticket */ |
297 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_SESSION_TICKET_A(0x1E0|0x1000); |
298 | } |
299 | |
300 | /* No client certificate verification. */ |
301 | tls1_transcript_free(s); |
302 | } |
303 | } else if (SSL_is_dtls(s)) { |
304 | S3I(s)(s->s3->internal)->hs.state = DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A(0x126|0x1000); |
305 | } else { |
306 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_CERT_A(0x130|0x1000); |
307 | } |
308 | s->internal->init_num = 0; |
309 | break; |
310 | |
311 | case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A(0x126|0x1000): |
312 | case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B(0x127|0x1000): |
313 | ret = ssl3_get_dtls_hello_verify(s); |
314 | if (ret <= 0) |
315 | goto end; |
316 | dtls1_stop_timer(s); |
317 | if (s->d1->send_cookie) /* start again, with a cookie */ |
318 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CLNT_HELLO_A(0x110|0x1000); |
319 | else |
320 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_CERT_A(0x130|0x1000); |
321 | s->internal->init_num = 0; |
322 | break; |
323 | |
324 | case SSL3_ST_CR_CERT_A(0x130|0x1000): |
325 | case SSL3_ST_CR_CERT_B(0x131|0x1000): |
326 | ret = ssl3_check_finished(s); |
327 | if (ret <= 0) |
328 | goto end; |
329 | if (ret == 2) { |
330 | s->internal->hit = 1; |
331 | if (s->internal->tlsext_ticket_expected) |
332 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_SESSION_TICKET_A(0x1E0|0x1000); |
333 | else |
334 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_FINISHED_A(0x1D0|0x1000); |
335 | s->internal->init_num = 0; |
336 | break; |
337 | } |
338 | /* Check if it is anon DH/ECDH. */ |
339 | if (!(S3I(s)(s->s3->internal)->hs.cipher->algorithm_auth & |
340 | SSL_aNULL0x00000004L)) { |
341 | ret = ssl3_get_server_certificate(s); |
342 | if (ret <= 0) |
343 | goto end; |
344 | if (s->internal->tlsext_status_expected) |
345 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_CERT_STATUS_A(0x1F0|0x1000); |
346 | else |
347 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_KEY_EXCH_A(0x140|0x1000); |
348 | } else { |
349 | skip = 1; |
350 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_KEY_EXCH_A(0x140|0x1000); |
351 | } |
352 | s->internal->init_num = 0; |
353 | break; |
354 | |
355 | case SSL3_ST_CR_KEY_EXCH_A(0x140|0x1000): |
356 | case SSL3_ST_CR_KEY_EXCH_B(0x141|0x1000): |
357 | ret = ssl3_get_server_key_exchange(s); |
358 | if (ret <= 0) |
359 | goto end; |
360 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_CERT_REQ_A(0x150|0x1000); |
361 | s->internal->init_num = 0; |
362 | |
363 | /* |
364 | * At this point we check that we have the |
365 | * required stuff from the server. |
366 | */ |
367 | if (!ssl3_check_cert_and_algorithm(s)) { |
368 | ret = -1; |
369 | goto end; |
370 | } |
371 | break; |
372 | |
373 | case SSL3_ST_CR_CERT_REQ_A(0x150|0x1000): |
374 | case SSL3_ST_CR_CERT_REQ_B(0x151|0x1000): |
375 | ret = ssl3_get_certificate_request(s); |
376 | if (ret <= 0) |
377 | goto end; |
378 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_SRVR_DONE_A(0x160|0x1000); |
379 | s->internal->init_num = 0; |
380 | break; |
381 | |
382 | case SSL3_ST_CR_SRVR_DONE_A(0x160|0x1000): |
383 | case SSL3_ST_CR_SRVR_DONE_B(0x161|0x1000): |
384 | ret = ssl3_get_server_done(s); |
385 | if (ret <= 0) |
386 | goto end; |
387 | if (SSL_is_dtls(s)) |
388 | dtls1_stop_timer(s); |
389 | if (S3I(s)(s->s3->internal)->hs.tls12.cert_request) |
390 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_A(0x170|0x1000); |
391 | else |
392 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_KEY_EXCH_A(0x180|0x1000); |
393 | s->internal->init_num = 0; |
394 | |
395 | break; |
396 | |
397 | case SSL3_ST_CW_CERT_A(0x170|0x1000): |
398 | case SSL3_ST_CW_CERT_B(0x171|0x1000): |
399 | case SSL3_ST_CW_CERT_C(0x172|0x1000): |
400 | case SSL3_ST_CW_CERT_D(0x173|0x1000): |
401 | if (SSL_is_dtls(s)) |
402 | dtls1_start_timer(s); |
403 | ret = ssl3_send_client_certificate(s); |
404 | if (ret <= 0) |
405 | goto end; |
406 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_KEY_EXCH_A(0x180|0x1000); |
407 | s->internal->init_num = 0; |
408 | break; |
409 | |
410 | case SSL3_ST_CW_KEY_EXCH_A(0x180|0x1000): |
411 | case SSL3_ST_CW_KEY_EXCH_B(0x181|0x1000): |
412 | if (SSL_is_dtls(s)) |
413 | dtls1_start_timer(s); |
414 | ret = ssl3_send_client_key_exchange(s); |
415 | if (ret <= 0) |
416 | goto end; |
417 | /* |
418 | * EAY EAY EAY need to check for DH fix cert |
419 | * sent back |
420 | */ |
421 | /* |
422 | * For TLS, cert_req is set to 2, so a cert chain |
423 | * of nothing is sent, but no verify packet is sent |
424 | */ |
425 | /* |
426 | * XXX: For now, we do not support client |
427 | * authentication in ECDH cipher suites with |
428 | * ECDH (rather than ECDSA) certificates. |
429 | * We need to skip the certificate verify |
430 | * message when client's ECDH public key is sent |
431 | * inside the client certificate. |
432 | */ |
433 | if (S3I(s)(s->s3->internal)->hs.tls12.cert_request == 1) { |
434 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_VRFY_A(0x190|0x1000); |
435 | } else { |
436 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CHANGE_A(0x1A0|0x1000); |
437 | S3I(s)(s->s3->internal)->change_cipher_spec = 0; |
438 | } |
439 | if (!SSL_is_dtls(s)) { |
440 | if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY0x0010) { |
441 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CHANGE_A(0x1A0|0x1000); |
442 | S3I(s)(s->s3->internal)->change_cipher_spec = 0; |
443 | } |
444 | } |
445 | |
446 | s->internal->init_num = 0; |
447 | break; |
448 | |
449 | case SSL3_ST_CW_CERT_VRFY_A(0x190|0x1000): |
450 | case SSL3_ST_CW_CERT_VRFY_B(0x191|0x1000): |
451 | if (SSL_is_dtls(s)) |
452 | dtls1_start_timer(s); |
453 | ret = ssl3_send_client_verify(s); |
454 | if (ret <= 0) |
455 | goto end; |
456 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CHANGE_A(0x1A0|0x1000); |
457 | s->internal->init_num = 0; |
458 | S3I(s)(s->s3->internal)->change_cipher_spec = 0; |
459 | break; |
460 | |
461 | case SSL3_ST_CW_CHANGE_A(0x1A0|0x1000): |
462 | case SSL3_ST_CW_CHANGE_B(0x1A1|0x1000): |
463 | if (SSL_is_dtls(s) && !s->internal->hit) |
464 | dtls1_start_timer(s); |
465 | ret = ssl3_send_change_cipher_spec(s, |
466 | SSL3_ST_CW_CHANGE_A(0x1A0|0x1000), SSL3_ST_CW_CHANGE_B(0x1A1|0x1000)); |
467 | if (ret <= 0) |
468 | goto end; |
469 | |
470 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_FINISHED_A(0x1B0|0x1000); |
471 | s->internal->init_num = 0; |
472 | s->session->cipher = S3I(s)(s->s3->internal)->hs.cipher; |
473 | |
474 | if (!tls1_setup_key_block(s)) { |
475 | ret = -1; |
476 | goto end; |
477 | } |
478 | if (!tls1_change_write_cipher_state(s)) { |
479 | ret = -1; |
480 | goto end; |
481 | } |
482 | break; |
483 | |
484 | case SSL3_ST_CW_FINISHED_A(0x1B0|0x1000): |
485 | case SSL3_ST_CW_FINISHED_B(0x1B1|0x1000): |
486 | if (SSL_is_dtls(s) && !s->internal->hit) |
487 | dtls1_start_timer(s); |
488 | ret = ssl3_send_finished(s, SSL3_ST_CW_FINISHED_A(0x1B0|0x1000), |
489 | SSL3_ST_CW_FINISHED_B(0x1B1|0x1000)); |
490 | if (ret <= 0) |
491 | goto end; |
492 | if (!SSL_is_dtls(s)) |
493 | s->s3->flags |= SSL3_FLAGS_CCS_OK0x0080; |
494 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_FLUSH(0x100|0x1000); |
495 | |
496 | /* clear flags */ |
497 | if (s->internal->hit) { |
498 | S3I(s)(s->s3->internal)->hs.tls12.next_state = SSL_ST_OK0x03; |
499 | } else { |
500 | /* Allow NewSessionTicket if ticket expected */ |
501 | if (s->internal->tlsext_ticket_expected) |
502 | S3I(s)(s->s3->internal)->hs.tls12.next_state = |
503 | SSL3_ST_CR_SESSION_TICKET_A(0x1E0|0x1000); |
504 | else |
505 | S3I(s)(s->s3->internal)->hs.tls12.next_state = |
506 | SSL3_ST_CR_FINISHED_A(0x1D0|0x1000); |
507 | } |
508 | s->internal->init_num = 0; |
509 | break; |
510 | |
511 | case SSL3_ST_CR_SESSION_TICKET_A(0x1E0|0x1000): |
512 | case SSL3_ST_CR_SESSION_TICKET_B(0x1E1|0x1000): |
513 | ret = ssl3_get_new_session_ticket(s); |
514 | if (ret <= 0) |
515 | goto end; |
516 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_FINISHED_A(0x1D0|0x1000); |
517 | s->internal->init_num = 0; |
518 | break; |
519 | |
520 | case SSL3_ST_CR_CERT_STATUS_A(0x1F0|0x1000): |
521 | case SSL3_ST_CR_CERT_STATUS_B(0x1F1|0x1000): |
522 | ret = ssl3_get_cert_status(s); |
523 | if (ret <= 0) |
524 | goto end; |
525 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CR_KEY_EXCH_A(0x140|0x1000); |
526 | s->internal->init_num = 0; |
527 | break; |
528 | |
529 | case SSL3_ST_CR_FINISHED_A(0x1D0|0x1000): |
530 | case SSL3_ST_CR_FINISHED_B(0x1D1|0x1000): |
531 | if (SSL_is_dtls(s)) |
532 | s->d1->change_cipher_spec_ok = 1; |
533 | else |
534 | s->s3->flags |= SSL3_FLAGS_CCS_OK0x0080; |
535 | ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A(0x1D0|0x1000), |
536 | SSL3_ST_CR_FINISHED_B(0x1D1|0x1000)); |
537 | if (ret <= 0) |
538 | goto end; |
539 | if (SSL_is_dtls(s)) |
540 | dtls1_stop_timer(s); |
541 | |
542 | if (s->internal->hit) |
543 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CHANGE_A(0x1A0|0x1000); |
544 | else |
545 | S3I(s)(s->s3->internal)->hs.state = SSL_ST_OK0x03; |
546 | s->internal->init_num = 0; |
547 | break; |
548 | |
549 | case SSL3_ST_CW_FLUSH(0x100|0x1000): |
550 | s->internal->rwstate = SSL_WRITING2; |
551 | if (BIO_flush(s->wbio)(int)BIO_ctrl(s->wbio,11,0,((void*)0)) <= 0) { |
552 | if (SSL_is_dtls(s)) { |
553 | /* If the write error was fatal, stop trying */ |
554 | if (!BIO_should_retry(s->wbio)BIO_test_flags(s->wbio, 0x08)) { |
555 | s->internal->rwstate = SSL_NOTHING1; |
556 | S3I(s)(s->s3->internal)->hs.state = S3I(s)(s->s3->internal)->hs.tls12.next_state; |
557 | } |
558 | } |
559 | ret = -1; |
560 | goto end; |
561 | } |
562 | s->internal->rwstate = SSL_NOTHING1; |
563 | S3I(s)(s->s3->internal)->hs.state = S3I(s)(s->s3->internal)->hs.tls12.next_state; |
564 | break; |
565 | |
566 | case SSL_ST_OK0x03: |
567 | /* clean a few things up */ |
568 | tls1_cleanup_key_block(s); |
569 | |
570 | if (S3I(s)(s->s3->internal)->handshake_transcript != NULL((void*)0)) { |
571 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 571); |
572 | ret = -1; |
573 | goto end; |
574 | } |
575 | |
576 | if (!SSL_is_dtls(s)) |
577 | ssl3_release_init_buffer(s); |
578 | |
579 | ssl_free_wbio_buffer(s); |
580 | |
581 | s->internal->init_num = 0; |
582 | s->internal->renegotiate = 0; |
583 | s->internal->new_session = 0; |
584 | |
585 | ssl_update_cache(s, SSL_SESS_CACHE_CLIENT0x0001); |
586 | if (s->internal->hit) |
587 | s->ctx->internal->stats.sess_hit++; |
588 | |
589 | ret = 1; |
590 | /* s->server=0; */ |
591 | s->internal->handshake_func = ssl3_connect; |
592 | s->ctx->internal->stats.sess_connect_good++; |
593 | |
594 | ssl_info_callback(s, SSL_CB_HANDSHAKE_DONE0x20, 1); |
595 | |
596 | if (SSL_is_dtls(s)) { |
597 | /* done with handshaking */ |
598 | s->d1->handshake_read_seq = 0; |
599 | s->d1->next_handshake_write_seq = 0; |
600 | } |
601 | |
602 | goto end; |
603 | /* break; */ |
604 | |
605 | default: |
606 | SSLerror(s, SSL_R_UNKNOWN_STATE)SSL_error_internal(s, 255, "/usr/src/lib/libssl/ssl_clnt.c", 606 ); |
607 | ret = -1; |
608 | goto end; |
609 | /* break; */ |
610 | } |
611 | |
612 | /* did we do anything */ |
613 | if (!S3I(s)(s->s3->internal)->hs.tls12.reuse_message && !skip) { |
614 | if (s->internal->debug) { |
615 | if ((ret = BIO_flush(s->wbio)(int)BIO_ctrl(s->wbio,11,0,((void*)0))) <= 0) |
616 | goto end; |
617 | } |
618 | |
619 | if (S3I(s)(s->s3->internal)->hs.state != state) { |
620 | new_state = S3I(s)(s->s3->internal)->hs.state; |
621 | S3I(s)(s->s3->internal)->hs.state = state; |
622 | ssl_info_callback(s, SSL_CB_CONNECT_LOOP(0x1000|0x01), 1); |
623 | S3I(s)(s->s3->internal)->hs.state = new_state; |
624 | } |
625 | } |
626 | skip = 0; |
627 | } |
628 | |
629 | end: |
630 | s->internal->in_handshake--; |
631 | ssl_info_callback(s, SSL_CB_CONNECT_EXIT(0x1000|0x02), ret); |
632 | |
633 | return (ret); |
634 | } |
635 | |
636 | int |
637 | ssl3_send_client_hello(SSL *s) |
638 | { |
639 | CBB cbb, client_hello, session_id, cookie, cipher_suites; |
640 | CBB compression_methods; |
641 | uint16_t max_version; |
642 | size_t sl; |
643 | |
644 | memset(&cbb, 0, sizeof(cbb)); |
645 | |
646 | if (S3I(s)(s->s3->internal)->hs.state == SSL3_ST_CW_CLNT_HELLO_A(0x110|0x1000)) { |
647 | SSL_SESSION *sess = s->session; |
648 | |
649 | if (!ssl_max_supported_version(s, &max_version)) { |
650 | SSLerror(s, SSL_R_NO_PROTOCOLS_AVAILABLE)SSL_error_internal(s, 191, "/usr/src/lib/libssl/ssl_clnt.c", 650 ); |
651 | return (-1); |
652 | } |
653 | s->version = max_version; |
654 | |
655 | if (sess == NULL((void*)0) || |
656 | sess->ssl_version != s->version || |
657 | (!sess->session_id_length && !sess->tlsext_tick) || |
658 | sess->not_resumable) { |
659 | if (!ssl_get_new_session(s, 0)) |
660 | goto err; |
661 | } |
662 | /* else use the pre-loaded session */ |
663 | |
664 | /* |
665 | * If a DTLS ClientHello message is being resent after a |
666 | * HelloVerifyRequest, we must retain the original client |
667 | * random value. |
668 | */ |
669 | if (!SSL_is_dtls(s) || s->d1->send_cookie == 0) |
670 | arc4random_buf(s->s3->client_random, SSL3_RANDOM_SIZE32); |
671 | |
672 | if (!ssl3_handshake_msg_start(s, &cbb, &client_hello, |
673 | SSL3_MT_CLIENT_HELLO1)) |
674 | goto err; |
675 | |
676 | if (!CBB_add_u16(&client_hello, s->version)) |
677 | goto err; |
678 | |
679 | /* Random stuff */ |
680 | if (!CBB_add_bytes(&client_hello, s->s3->client_random, |
681 | sizeof(s->s3->client_random))) |
682 | goto err; |
683 | |
684 | /* Session ID */ |
685 | if (!CBB_add_u8_length_prefixed(&client_hello, &session_id)) |
686 | goto err; |
687 | if (!s->internal->new_session && |
688 | s->session->session_id_length > 0) { |
689 | sl = s->session->session_id_length; |
690 | if (sl > sizeof(s->session->session_id)) { |
691 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 691); |
692 | goto err; |
693 | } |
694 | if (!CBB_add_bytes(&session_id, |
695 | s->session->session_id, sl)) |
696 | goto err; |
697 | } |
698 | |
699 | /* DTLS Cookie. */ |
700 | if (SSL_is_dtls(s)) { |
701 | if (s->d1->cookie_len > sizeof(s->d1->cookie)) { |
702 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 702); |
703 | goto err; |
704 | } |
705 | if (!CBB_add_u8_length_prefixed(&client_hello, &cookie)) |
706 | goto err; |
707 | if (!CBB_add_bytes(&cookie, s->d1->cookie, |
708 | s->d1->cookie_len)) |
709 | goto err; |
710 | } |
711 | |
712 | /* Ciphers supported */ |
713 | if (!CBB_add_u16_length_prefixed(&client_hello, &cipher_suites)) |
714 | return 0; |
715 | if (!ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), |
716 | &cipher_suites)) { |
717 | SSLerror(s, SSL_R_NO_CIPHERS_AVAILABLE)SSL_error_internal(s, 181, "/usr/src/lib/libssl/ssl_clnt.c", 717 ); |
718 | goto err; |
719 | } |
720 | |
721 | /* Add in compression methods (null) */ |
722 | if (!CBB_add_u8_length_prefixed(&client_hello, |
723 | &compression_methods)) |
724 | goto err; |
725 | if (!CBB_add_u8(&compression_methods, 0)) |
726 | goto err; |
727 | |
728 | /* TLS extensions */ |
729 | if (!tlsext_client_build(s, SSL_TLSEXT_MSG_CH0x0001, &client_hello)) { |
730 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 730); |
731 | goto err; |
732 | } |
733 | |
734 | if (!ssl3_handshake_msg_finish(s, &cbb)) |
735 | goto err; |
736 | |
737 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CLNT_HELLO_B(0x111|0x1000); |
738 | } |
739 | |
740 | /* SSL3_ST_CW_CLNT_HELLO_B */ |
741 | return (ssl3_handshake_write(s)); |
742 | |
743 | err: |
744 | CBB_cleanup(&cbb); |
745 | |
746 | return (-1); |
747 | } |
748 | |
749 | int |
750 | ssl3_get_dtls_hello_verify(SSL *s) |
751 | { |
752 | CBS hello_verify_request, cookie; |
753 | size_t cookie_len; |
754 | uint16_t ssl_version; |
755 | int al, ret; |
756 | |
757 | if ((ret = ssl3_get_message(s, DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A(0x126|0x1000), |
758 | DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B(0x127|0x1000), -1, s->internal->max_cert_list)) <= 0) |
759 | return ret; |
760 | |
761 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST3) { |
762 | s->d1->send_cookie = 0; |
763 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
764 | return (1); |
765 | } |
766 | |
767 | if (s->internal->init_num < 0) |
768 | goto decode_err; |
769 | |
770 | CBS_init(&hello_verify_request, s->internal->init_msg, |
771 | s->internal->init_num); |
772 | |
773 | if (!CBS_get_u16(&hello_verify_request, &ssl_version)) |
774 | goto decode_err; |
775 | if (!CBS_get_u8_length_prefixed(&hello_verify_request, &cookie)) |
776 | goto decode_err; |
777 | if (CBS_len(&hello_verify_request) != 0) |
778 | goto decode_err; |
779 | |
780 | /* |
781 | * Per RFC 6347 section 4.2.1, the HelloVerifyRequest should always |
782 | * contain DTLSv1.0 the version that is going to be negotiated. |
783 | * Tolerate DTLSv1.2 just in case. |
784 | */ |
785 | if (ssl_version != DTLS1_VERSION0xFEFF && ssl_version != DTLS1_2_VERSION0xFEFD) { |
786 | SSLerror(s, SSL_R_WRONG_SSL_VERSION)SSL_error_internal(s, 266, "/usr/src/lib/libssl/ssl_clnt.c", 786 ); |
787 | s->version = (s->version & 0xff00) | (ssl_version & 0xff); |
788 | al = SSL_AD_PROTOCOL_VERSION70; |
789 | goto fatal_err; |
790 | } |
791 | |
792 | if (!CBS_write_bytes(&cookie, s->d1->cookie, |
793 | sizeof(s->d1->cookie), &cookie_len)) { |
794 | s->d1->cookie_len = 0; |
795 | al = SSL_AD_ILLEGAL_PARAMETER47; |
796 | goto fatal_err; |
797 | } |
798 | s->d1->cookie_len = cookie_len; |
799 | s->d1->send_cookie = 1; |
800 | |
801 | return 1; |
802 | |
803 | decode_err: |
804 | al = SSL_AD_DECODE_ERROR50; |
805 | fatal_err: |
806 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); |
807 | return -1; |
808 | } |
809 | |
810 | int |
811 | ssl3_get_server_hello(SSL *s) |
812 | { |
813 | CBS cbs, server_random, session_id; |
814 | uint16_t server_version, cipher_suite; |
815 | uint8_t compression_method; |
816 | const SSL_CIPHER *cipher; |
817 | const SSL_METHOD *method; |
818 | unsigned long alg_k; |
819 | size_t outlen; |
820 | int al, ret; |
821 | |
822 | s->internal->first_packet = 1; |
823 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_SRVR_HELLO_A(0x120|0x1000), |
824 | SSL3_ST_CR_SRVR_HELLO_B(0x121|0x1000), -1, 20000 /* ?? */)) <= 0) |
825 | return ret; |
826 | s->internal->first_packet = 0; |
827 | |
828 | if (s->internal->init_num < 0) |
829 | goto decode_err; |
830 | |
831 | CBS_init(&cbs, s->internal->init_msg, s->internal->init_num); |
832 | |
833 | if (SSL_is_dtls(s)) { |
834 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST3) { |
835 | if (s->d1->send_cookie == 0) { |
836 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
837 | return (1); |
838 | } else { |
839 | /* Already sent a cookie. */ |
840 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
841 | SSLerror(s, SSL_R_BAD_MESSAGE_TYPE)SSL_error_internal(s, 114, "/usr/src/lib/libssl/ssl_clnt.c", 841 ); |
842 | goto fatal_err; |
843 | } |
844 | } |
845 | } |
846 | |
847 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_SERVER_HELLO2) { |
848 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
849 | SSLerror(s, SSL_R_BAD_MESSAGE_TYPE)SSL_error_internal(s, 114, "/usr/src/lib/libssl/ssl_clnt.c", 849 ); |
850 | goto fatal_err; |
851 | } |
852 | |
853 | if (!CBS_get_u16(&cbs, &server_version)) |
854 | goto decode_err; |
855 | |
856 | if (!ssl_check_version_from_server(s, server_version)) { |
857 | SSLerror(s, SSL_R_WRONG_SSL_VERSION)SSL_error_internal(s, 266, "/usr/src/lib/libssl/ssl_clnt.c", 857 ); |
858 | s->version = (s->version & 0xff00) | (server_version & 0xff); |
859 | al = SSL_AD_PROTOCOL_VERSION70; |
860 | goto fatal_err; |
861 | } |
862 | S3I(s)(s->s3->internal)->hs.peer_legacy_version = server_version; |
863 | s->version = server_version; |
864 | |
865 | S3I(s)(s->s3->internal)->hs.negotiated_tls_version = ssl_tls_version(server_version); |
866 | if (S3I(s)(s->s3->internal)->hs.negotiated_tls_version == 0) { |
867 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 867); |
868 | goto err; |
869 | } |
870 | |
871 | if ((method = ssl_get_method(server_version)) == NULL((void*)0)) { |
872 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 872); |
873 | goto err; |
874 | } |
875 | s->method = method; |
876 | |
877 | /* Server random. */ |
878 | if (!CBS_get_bytes(&cbs, &server_random, SSL3_RANDOM_SIZE32)) |
879 | goto decode_err; |
880 | if (!CBS_write_bytes(&server_random, s->s3->server_random, |
881 | sizeof(s->s3->server_random), NULL((void*)0))) |
882 | goto err; |
883 | |
884 | if (S3I(s)(s->s3->internal)->hs.our_max_tls_version >= TLS1_2_VERSION0x0303 && |
885 | S3I(s)(s->s3->internal)->hs.negotiated_tls_version < S3I(s)(s->s3->internal)->hs.our_max_tls_version) { |
886 | /* |
887 | * RFC 8446 section 4.1.3. We must not downgrade if the server |
888 | * random value contains the TLS 1.2 or TLS 1.1 magical value. |
889 | */ |
890 | if (!CBS_skip(&server_random, |
891 | CBS_len(&server_random) - sizeof(tls13_downgrade_12))) |
892 | goto err; |
893 | if (S3I(s)(s->s3->internal)->hs.negotiated_tls_version == TLS1_2_VERSION0x0303 && |
894 | CBS_mem_equal(&server_random, tls13_downgrade_12, |
895 | sizeof(tls13_downgrade_12))) { |
896 | al = SSL_AD_ILLEGAL_PARAMETER47; |
897 | SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK)SSL_error_internal(s, 373, "/usr/src/lib/libssl/ssl_clnt.c", 897 ); |
898 | goto fatal_err; |
899 | } |
900 | if (CBS_mem_equal(&server_random, tls13_downgrade_11, |
901 | sizeof(tls13_downgrade_11))) { |
902 | al = SSL_AD_ILLEGAL_PARAMETER47; |
903 | SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK)SSL_error_internal(s, 373, "/usr/src/lib/libssl/ssl_clnt.c", 903 ); |
904 | goto fatal_err; |
905 | } |
906 | } |
907 | |
908 | /* Session ID. */ |
909 | if (!CBS_get_u8_length_prefixed(&cbs, &session_id)) |
910 | goto decode_err; |
911 | |
912 | if (CBS_len(&session_id) > SSL3_SESSION_ID_SIZE32) { |
913 | al = SSL_AD_ILLEGAL_PARAMETER47; |
914 | SSLerror(s, SSL_R_SSL3_SESSION_ID_TOO_LONG)SSL_error_internal(s, 300, "/usr/src/lib/libssl/ssl_clnt.c", 914 ); |
915 | goto fatal_err; |
916 | } |
917 | |
918 | /* Cipher suite. */ |
919 | if (!CBS_get_u16(&cbs, &cipher_suite)) |
920 | goto decode_err; |
921 | |
922 | /* |
923 | * Check if we want to resume the session based on external |
924 | * pre-shared secret. |
925 | */ |
926 | if (s->internal->tls_session_secret_cb) { |
927 | SSL_CIPHER *pref_cipher = NULL((void*)0); |
928 | s->session->master_key_length = sizeof(s->session->master_key); |
929 | if (s->internal->tls_session_secret_cb(s, s->session->master_key, |
930 | &s->session->master_key_length, NULL((void*)0), &pref_cipher, |
931 | s->internal->tls_session_secret_cb_arg)) { |
932 | s->session->cipher = pref_cipher ? pref_cipher : |
933 | ssl3_get_cipher_by_value(cipher_suite); |
934 | s->s3->flags |= SSL3_FLAGS_CCS_OK0x0080; |
935 | } |
936 | } |
937 | |
938 | if (s->session->session_id_length != 0 && |
939 | CBS_mem_equal(&session_id, s->session->session_id, |
940 | s->session->session_id_length)) { |
941 | if (s->sid_ctx_length != s->session->sid_ctx_length || |
942 | timingsafe_memcmp(s->session->sid_ctx, |
943 | s->sid_ctx, s->sid_ctx_length) != 0) { |
944 | /* actually a client application bug */ |
945 | al = SSL_AD_ILLEGAL_PARAMETER47; |
946 | SSLerror(s, SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT)SSL_error_internal(s, 272, "/usr/src/lib/libssl/ssl_clnt.c", 946 ); |
947 | goto fatal_err; |
948 | } |
949 | s->s3->flags |= SSL3_FLAGS_CCS_OK0x0080; |
950 | s->internal->hit = 1; |
951 | } else { |
952 | /* a miss or crap from the other end */ |
953 | |
954 | /* If we were trying for session-id reuse, make a new |
955 | * SSL_SESSION so we don't stuff up other people */ |
956 | s->internal->hit = 0; |
957 | if (s->session->session_id_length > 0) { |
958 | if (!ssl_get_new_session(s, 0)) { |
959 | al = SSL_AD_INTERNAL_ERROR80; |
960 | goto fatal_err; |
961 | } |
962 | } |
963 | |
964 | /* |
965 | * XXX - improve the handling for the case where there is a |
966 | * zero length session identifier. |
967 | */ |
968 | if (!CBS_write_bytes(&session_id, s->session->session_id, |
969 | sizeof(s->session->session_id), &outlen)) |
970 | goto err; |
971 | s->session->session_id_length = outlen; |
972 | |
973 | s->session->ssl_version = s->version; |
974 | } |
975 | |
976 | if ((cipher = ssl3_get_cipher_by_value(cipher_suite)) == NULL((void*)0)) { |
977 | al = SSL_AD_ILLEGAL_PARAMETER47; |
978 | SSLerror(s, SSL_R_UNKNOWN_CIPHER_RETURNED)SSL_error_internal(s, 248, "/usr/src/lib/libssl/ssl_clnt.c", 978 ); |
979 | goto fatal_err; |
980 | } |
981 | |
982 | /* TLS v1.2 only ciphersuites require v1.2 or later. */ |
983 | if ((cipher->algorithm_ssl & SSL_TLSV1_20x00000004L) && |
984 | S3I(s)(s->s3->internal)->hs.negotiated_tls_version < TLS1_2_VERSION0x0303) { |
985 | al = SSL_AD_ILLEGAL_PARAMETER47; |
986 | SSLerror(s, SSL_R_WRONG_CIPHER_RETURNED)SSL_error_internal(s, 261, "/usr/src/lib/libssl/ssl_clnt.c", 986 ); |
987 | goto fatal_err; |
988 | } |
989 | |
990 | if (!ssl_cipher_in_list(SSL_get_ciphers(s), cipher)) { |
991 | /* we did not say we would use this cipher */ |
992 | al = SSL_AD_ILLEGAL_PARAMETER47; |
993 | SSLerror(s, SSL_R_WRONG_CIPHER_RETURNED)SSL_error_internal(s, 261, "/usr/src/lib/libssl/ssl_clnt.c", 993 ); |
994 | goto fatal_err; |
995 | } |
996 | |
997 | /* |
998 | * Depending on the session caching (internal/external), the cipher |
999 | * and/or cipher_id values may not be set. Make sure that |
1000 | * cipher_id is set and use it for comparison. |
1001 | */ |
1002 | if (s->session->cipher) |
1003 | s->session->cipher_id = s->session->cipher->id; |
1004 | if (s->internal->hit && (s->session->cipher_id != cipher->id)) { |
1005 | al = SSL_AD_ILLEGAL_PARAMETER47; |
1006 | SSLerror(s, SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED)SSL_error_internal(s, 197, "/usr/src/lib/libssl/ssl_clnt.c", 1006 ); |
1007 | goto fatal_err; |
1008 | } |
1009 | S3I(s)(s->s3->internal)->hs.cipher = cipher; |
1010 | |
1011 | if (!tls1_transcript_hash_init(s)) |
1012 | goto err; |
1013 | |
1014 | /* |
1015 | * Don't digest cached records if no sigalgs: we may need them for |
1016 | * client authentication. |
1017 | */ |
1018 | alg_k = S3I(s)(s->s3->internal)->hs.cipher->algorithm_mkey; |
1019 | if (!(SSL_USE_SIGALGS(s)(s->method->enc_flags & (1 << 1)) || (alg_k & SSL_kGOST0x00000200L))) |
1020 | tls1_transcript_free(s); |
1021 | |
1022 | if (!CBS_get_u8(&cbs, &compression_method)) |
1023 | goto decode_err; |
1024 | |
1025 | if (compression_method != 0) { |
1026 | al = SSL_AD_ILLEGAL_PARAMETER47; |
1027 | SSLerror(s, SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM)SSL_error_internal(s, 257, "/usr/src/lib/libssl/ssl_clnt.c", 1027 ); |
1028 | goto fatal_err; |
1029 | } |
1030 | |
1031 | if (!tlsext_client_parse(s, SSL_TLSEXT_MSG_SH0x0002, &cbs, &al)) { |
1032 | SSLerror(s, SSL_R_PARSE_TLSEXT)SSL_error_internal(s, 227, "/usr/src/lib/libssl/ssl_clnt.c", 1032 ); |
1033 | goto fatal_err; |
1034 | } |
1035 | |
1036 | if (CBS_len(&cbs) != 0) |
1037 | goto decode_err; |
1038 | |
1039 | /* |
1040 | * Determine if we need to see RI. Strictly speaking if we want to |
1041 | * avoid an attack we should *always* see RI even on initial server |
1042 | * hello because the client doesn't see any renegotiation during an |
1043 | * attack. However this would mean we could not connect to any server |
1044 | * which doesn't support RI so for the immediate future tolerate RI |
1045 | * absence on initial connect only. |
1046 | */ |
1047 | if (!S3I(s)(s->s3->internal)->renegotiate_seen && |
1048 | !(s->internal->options & SSL_OP_LEGACY_SERVER_CONNECT0x00000004L)) { |
1049 | al = SSL_AD_HANDSHAKE_FAILURE40; |
1050 | SSLerror(s, SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED)SSL_error_internal(s, 338, "/usr/src/lib/libssl/ssl_clnt.c", 1050 ); |
1051 | goto fatal_err; |
1052 | } |
1053 | |
1054 | if (ssl_check_serverhello_tlsext(s) <= 0) { |
1055 | SSLerror(s, SSL_R_SERVERHELLO_TLSEXT)SSL_error_internal(s, 275, "/usr/src/lib/libssl/ssl_clnt.c", 1055 ); |
1056 | goto err; |
1057 | } |
1058 | |
1059 | return (1); |
1060 | |
1061 | decode_err: |
1062 | /* wrong packet length */ |
1063 | al = SSL_AD_DECODE_ERROR50; |
1064 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1064 ); |
1065 | fatal_err: |
1066 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); |
1067 | err: |
1068 | return (-1); |
1069 | } |
1070 | |
1071 | int |
1072 | ssl3_get_server_certificate(SSL *s) |
1073 | { |
1074 | CBS cbs, cert_list; |
1075 | X509 *x = NULL((void*)0); |
1076 | const unsigned char *q; |
1077 | STACK_OF(X509)struct stack_st_X509 *sk = NULL((void*)0); |
1078 | EVP_PKEY *pkey; |
1079 | int cert_type; |
1080 | int al, ret; |
1081 | |
1082 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_CERT_A(0x130|0x1000), |
1083 | SSL3_ST_CR_CERT_B(0x131|0x1000), -1, s->internal->max_cert_list)) <= 0) |
1084 | return ret; |
1085 | |
1086 | ret = -1; |
1087 | |
1088 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type == SSL3_MT_SERVER_KEY_EXCHANGE12) { |
1089 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
1090 | return (1); |
1091 | } |
1092 | |
1093 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_CERTIFICATE11) { |
1094 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
1095 | SSLerror(s, SSL_R_BAD_MESSAGE_TYPE)SSL_error_internal(s, 114, "/usr/src/lib/libssl/ssl_clnt.c", 1095 ); |
1096 | goto fatal_err; |
1097 | } |
1098 | |
1099 | if ((sk = sk_X509_new_null()((struct stack_st_X509 *)sk_new_null())) == NULL((void*)0)) { |
1100 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1100); |
1101 | goto err; |
1102 | } |
1103 | |
1104 | if (s->internal->init_num < 0) |
1105 | goto decode_err; |
1106 | |
1107 | CBS_init(&cbs, s->internal->init_msg, s->internal->init_num); |
1108 | if (CBS_len(&cbs) < 3) |
1109 | goto decode_err; |
1110 | |
1111 | if (!CBS_get_u24_length_prefixed(&cbs, &cert_list) || |
1112 | CBS_len(&cbs) != 0) { |
1113 | al = SSL_AD_DECODE_ERROR50; |
1114 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1114 ); |
1115 | goto fatal_err; |
1116 | } |
1117 | |
1118 | while (CBS_len(&cert_list) > 0) { |
1119 | CBS cert; |
1120 | |
1121 | if (CBS_len(&cert_list) < 3) |
1122 | goto decode_err; |
1123 | if (!CBS_get_u24_length_prefixed(&cert_list, &cert)) { |
1124 | al = SSL_AD_DECODE_ERROR50; |
1125 | SSLerror(s, SSL_R_CERT_LENGTH_MISMATCH)SSL_error_internal(s, 135, "/usr/src/lib/libssl/ssl_clnt.c", 1125 ); |
1126 | goto fatal_err; |
1127 | } |
1128 | |
1129 | q = CBS_data(&cert); |
1130 | x = d2i_X509(NULL((void*)0), &q, CBS_len(&cert)); |
1131 | if (x == NULL((void*)0)) { |
1132 | al = SSL_AD_BAD_CERTIFICATE42; |
1133 | SSLerror(s, ERR_R_ASN1_LIB)SSL_error_internal(s, 13, "/usr/src/lib/libssl/ssl_clnt.c", 1133 ); |
1134 | goto fatal_err; |
1135 | } |
1136 | if (q != CBS_data(&cert) + CBS_len(&cert)) { |
1137 | al = SSL_AD_DECODE_ERROR50; |
1138 | SSLerror(s, SSL_R_CERT_LENGTH_MISMATCH)SSL_error_internal(s, 135, "/usr/src/lib/libssl/ssl_clnt.c", 1138 ); |
1139 | goto fatal_err; |
1140 | } |
1141 | if (!sk_X509_push(sk, x)sk_push(((_STACK*) (1 ? (sk) : (struct stack_st_X509*)0)), (( void*) (1 ? (x) : (X509*)0)))) { |
1142 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1142); |
1143 | goto err; |
1144 | } |
1145 | x = NULL((void*)0); |
1146 | } |
1147 | |
1148 | if (ssl_verify_cert_chain(s, sk) <= 0 && |
1149 | s->verify_mode != SSL_VERIFY_NONE0x00) { |
1150 | al = ssl_verify_alarm_type(s->verify_result); |
1151 | SSLerror(s, SSL_R_CERTIFICATE_VERIFY_FAILED)SSL_error_internal(s, 134, "/usr/src/lib/libssl/ssl_clnt.c", 1151 ); |
1152 | goto fatal_err; |
1153 | } |
1154 | ERR_clear_error(); /* but we keep s->verify_result */ |
1155 | |
1156 | /* |
1157 | * Inconsistency alert: cert_chain does include the peer's |
1158 | * certificate, which we don't include in s3_srvr.c |
1159 | */ |
1160 | x = sk_X509_value(sk, 0)((X509 *)sk_value(((_STACK*) (1 ? (sk) : (struct stack_st_X509 *)0)), (0))); |
1161 | |
1162 | if ((pkey = X509_get0_pubkey(x)) == NULL((void*)0) || |
1163 | EVP_PKEY_missing_parameters(pkey)) { |
1164 | x = NULL((void*)0); |
1165 | al = SSL3_AL_FATAL2; |
1166 | SSLerror(s, SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS)SSL_error_internal(s, 239, "/usr/src/lib/libssl/ssl_clnt.c", 1166 ); |
1167 | goto fatal_err; |
1168 | } |
1169 | if ((cert_type = ssl_cert_type(x, pkey)) < 0) { |
1170 | x = NULL((void*)0); |
1171 | al = SSL3_AL_FATAL2; |
1172 | SSLerror(s, SSL_R_UNKNOWN_CERTIFICATE_TYPE)SSL_error_internal(s, 247, "/usr/src/lib/libssl/ssl_clnt.c", 1172 ); |
1173 | goto fatal_err; |
1174 | } |
1175 | |
1176 | X509_up_ref(x); |
1177 | X509_free(s->session->peer_cert); |
1178 | s->session->peer_cert = x; |
1179 | s->session->peer_cert_type = cert_type; |
1180 | |
1181 | s->session->verify_result = s->verify_result; |
1182 | |
1183 | sk_X509_pop_free(s->session->cert_chain, X509_free)sk_pop_free(((_STACK*) (1 ? (s->session->cert_chain) : ( struct stack_st_X509*)0)), ((void (*)(void *)) ((1 ? (X509_free ) : (void (*)(X509 *))0)))); |
1184 | s->session->cert_chain = sk; |
1185 | sk = NULL((void*)0); |
1186 | |
1187 | x = NULL((void*)0); |
1188 | ret = 1; |
1189 | |
1190 | if (0) { |
1191 | decode_err: |
1192 | /* wrong packet length */ |
1193 | al = SSL_AD_DECODE_ERROR50; |
1194 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1194 ); |
1195 | fatal_err: |
1196 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); |
1197 | } |
1198 | err: |
1199 | X509_free(x); |
1200 | sk_X509_pop_free(sk, X509_free)sk_pop_free(((_STACK*) (1 ? (sk) : (struct stack_st_X509*)0)) , ((void (*)(void *)) ((1 ? (X509_free) : (void (*)(X509 *))0 )))); |
1201 | |
1202 | return (ret); |
1203 | } |
1204 | |
1205 | static int |
1206 | ssl3_get_server_kex_dhe(SSL *s, CBS *cbs) |
1207 | { |
1208 | int decode_error, invalid_params, invalid_key; |
1209 | int nid = NID_dhKeyAgreement28; |
1210 | |
1211 | tls_key_share_free(S3I(s)(s->s3->internal)->hs.key_share); |
1212 | if ((S3I(s)(s->s3->internal)->hs.key_share = tls_key_share_new_nid(nid)) == NULL((void*)0)) |
1213 | goto err; |
1214 | |
1215 | if (!tls_key_share_peer_params(S3I(s)(s->s3->internal)->hs.key_share, cbs, |
1216 | &decode_error, &invalid_params)) { |
1217 | if (decode_error) { |
1218 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1218 ); |
1219 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1220 | } |
1221 | goto err; |
1222 | } |
1223 | if (!tls_key_share_peer_public(S3I(s)(s->s3->internal)->hs.key_share, cbs, |
1224 | &decode_error, &invalid_key)) { |
1225 | if (decode_error) { |
1226 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1226 ); |
1227 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1228 | } |
1229 | goto err; |
1230 | } |
1231 | |
1232 | if (invalid_params) { |
1233 | SSLerror(s, SSL_R_BAD_DH_P_LENGTH)SSL_error_internal(s, 110, "/usr/src/lib/libssl/ssl_clnt.c", 1233 ); |
1234 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_ILLEGAL_PARAMETER47); |
1235 | goto err; |
1236 | } |
1237 | if (invalid_key) { |
1238 | SSLerror(s, SSL_R_BAD_DH_PUB_KEY_LENGTH)SSL_error_internal(s, 109, "/usr/src/lib/libssl/ssl_clnt.c", 1238 ); |
1239 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_ILLEGAL_PARAMETER47); |
1240 | goto err; |
1241 | } |
1242 | |
1243 | return 1; |
1244 | |
1245 | err: |
1246 | return 0; |
1247 | } |
1248 | |
1249 | static int |
1250 | ssl3_get_server_kex_ecdhe(SSL *s, CBS *cbs) |
1251 | { |
1252 | uint8_t curve_type; |
1253 | uint16_t curve_id; |
1254 | int decode_error; |
1255 | CBS public; |
1256 | |
1257 | if (!CBS_get_u8(cbs, &curve_type)) |
1258 | goto decode_err; |
1259 | if (!CBS_get_u16(cbs, &curve_id)) |
1260 | goto decode_err; |
1261 | |
1262 | /* Only named curves are supported. */ |
1263 | if (curve_type != NAMED_CURVE_TYPE3) { |
1264 | SSLerror(s, SSL_R_UNSUPPORTED_ELLIPTIC_CURVE)SSL_error_internal(s, 315, "/usr/src/lib/libssl/ssl_clnt.c", 1264 ); |
1265 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_HANDSHAKE_FAILURE40); |
1266 | goto err; |
1267 | } |
1268 | |
1269 | if (!CBS_get_u8_length_prefixed(cbs, &public)) |
1270 | goto decode_err; |
1271 | |
1272 | /* |
1273 | * Check that the curve is one of our preferences - if it is not, |
1274 | * the server has sent us an invalid curve. |
1275 | */ |
1276 | if (!tls1_check_curve(s, curve_id)) { |
1277 | SSLerror(s, SSL_R_WRONG_CURVE)SSL_error_internal(s, 378, "/usr/src/lib/libssl/ssl_clnt.c", 1277 ); |
1278 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_ILLEGAL_PARAMETER47); |
1279 | goto err; |
1280 | } |
1281 | |
1282 | tls_key_share_free(S3I(s)(s->s3->internal)->hs.key_share); |
1283 | if ((S3I(s)(s->s3->internal)->hs.key_share = tls_key_share_new(curve_id)) == NULL((void*)0)) |
1284 | goto err; |
1285 | |
1286 | if (!tls_key_share_peer_public(S3I(s)(s->s3->internal)->hs.key_share, &public, |
1287 | &decode_error, NULL((void*)0))) { |
1288 | if (decode_error) |
1289 | goto decode_err; |
1290 | goto err; |
1291 | } |
1292 | |
1293 | return 1; |
1294 | |
1295 | decode_err: |
1296 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1296 ); |
1297 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1298 | err: |
1299 | return 0; |
1300 | } |
1301 | |
1302 | int |
1303 | ssl3_get_server_key_exchange(SSL *s) |
1304 | { |
1305 | CBS cbs, signature; |
1306 | EVP_MD_CTX *md_ctx; |
1307 | const unsigned char *param; |
1308 | size_t param_len; |
1309 | long alg_k, alg_a; |
1310 | int al, ret; |
1311 | |
1312 | alg_k = S3I(s)(s->s3->internal)->hs.cipher->algorithm_mkey; |
1313 | alg_a = S3I(s)(s->s3->internal)->hs.cipher->algorithm_auth; |
1314 | |
1315 | /* |
1316 | * Use same message size as in ssl3_get_certificate_request() |
1317 | * as ServerKeyExchange message may be skipped. |
1318 | */ |
1319 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_KEY_EXCH_A(0x140|0x1000), |
1320 | SSL3_ST_CR_KEY_EXCH_B(0x141|0x1000), -1, s->internal->max_cert_list)) <= 0) |
1321 | return ret; |
1322 | |
1323 | if ((md_ctx = EVP_MD_CTX_new()) == NULL((void*)0)) |
1324 | goto err; |
1325 | |
1326 | if (s->internal->init_num < 0) |
1327 | goto err; |
1328 | |
1329 | CBS_init(&cbs, s->internal->init_msg, s->internal->init_num); |
1330 | |
1331 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_SERVER_KEY_EXCHANGE12) { |
1332 | /* |
1333 | * Do not skip server key exchange if this cipher suite uses |
1334 | * ephemeral keys. |
1335 | */ |
1336 | if (alg_k & (SSL_kDHE0x00000008L|SSL_kECDHE0x00000080L)) { |
1337 | SSLerror(s, SSL_R_UNEXPECTED_MESSAGE)SSL_error_internal(s, 244, "/usr/src/lib/libssl/ssl_clnt.c", 1337 ); |
1338 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
1339 | goto fatal_err; |
1340 | } |
1341 | |
1342 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
1343 | EVP_MD_CTX_free(md_ctx); |
1344 | return (1); |
1345 | } |
1346 | |
1347 | param = CBS_data(&cbs); |
1348 | param_len = CBS_len(&cbs); |
1349 | |
1350 | if (alg_k & SSL_kDHE0x00000008L) { |
1351 | if (!ssl3_get_server_kex_dhe(s, &cbs)) |
1352 | goto err; |
1353 | } else if (alg_k & SSL_kECDHE0x00000080L) { |
1354 | if (!ssl3_get_server_kex_ecdhe(s, &cbs)) |
1355 | goto err; |
1356 | } else if (alg_k != 0) { |
1357 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
1358 | SSLerror(s, SSL_R_UNEXPECTED_MESSAGE)SSL_error_internal(s, 244, "/usr/src/lib/libssl/ssl_clnt.c", 1358 ); |
1359 | goto fatal_err; |
1360 | } |
1361 | |
1362 | param_len -= CBS_len(&cbs); |
1363 | |
1364 | /* if it was signed, check the signature */ |
1365 | if ((alg_a & SSL_aNULL0x00000004L) == 0) { |
1366 | uint16_t sigalg_value = SIGALG_NONE0x0000; |
1367 | const struct ssl_sigalg *sigalg; |
1368 | EVP_PKEY_CTX *pctx; |
1369 | EVP_PKEY *pkey = NULL((void*)0); |
1370 | |
1371 | if ((alg_a & SSL_aRSA0x00000001L) != 0 && |
1372 | s->session->peer_cert_type == SSL_PKEY_RSA0) { |
1373 | pkey = X509_get0_pubkey(s->session->peer_cert); |
1374 | } else if ((alg_a & SSL_aECDSA0x00000040L) != 0 && |
1375 | s->session->peer_cert_type == SSL_PKEY_ECC1) { |
1376 | pkey = X509_get0_pubkey(s->session->peer_cert); |
1377 | } |
1378 | if (pkey == NULL((void*)0)) { |
1379 | al = SSL_AD_ILLEGAL_PARAMETER47; |
1380 | SSLerror(s, SSL_R_UNKNOWN_CERTIFICATE_TYPE)SSL_error_internal(s, 247, "/usr/src/lib/libssl/ssl_clnt.c", 1380 ); |
1381 | goto err; |
1382 | } |
1383 | |
1384 | if (SSL_USE_SIGALGS(s)(s->method->enc_flags & (1 << 1))) { |
1385 | if (!CBS_get_u16(&cbs, &sigalg_value)) |
1386 | goto decode_err; |
1387 | } |
1388 | if (!CBS_get_u16_length_prefixed(&cbs, &signature)) |
1389 | goto decode_err; |
1390 | if (CBS_len(&signature) > EVP_PKEY_size(pkey)) { |
1391 | al = SSL_AD_DECODE_ERROR50; |
1392 | SSLerror(s, SSL_R_WRONG_SIGNATURE_LENGTH)SSL_error_internal(s, 264, "/usr/src/lib/libssl/ssl_clnt.c", 1392 ); |
1393 | goto fatal_err; |
1394 | } |
1395 | |
1396 | if ((sigalg = ssl_sigalg_for_peer(s, pkey, |
1397 | sigalg_value)) == NULL((void*)0)) { |
1398 | al = SSL_AD_DECODE_ERROR50; |
1399 | goto fatal_err; |
1400 | } |
1401 | S3I(s)(s->s3->internal)->hs.peer_sigalg = sigalg; |
1402 | |
1403 | if (!EVP_DigestVerifyInit(md_ctx, &pctx, sigalg->md(), |
1404 | NULL((void*)0), pkey)) |
1405 | goto err; |
1406 | if (!EVP_DigestVerifyUpdate(md_ctx, s->s3->client_random,EVP_DigestUpdate(md_ctx,s->s3->client_random,32) |
1407 | SSL3_RANDOM_SIZE)EVP_DigestUpdate(md_ctx,s->s3->client_random,32)) |
1408 | goto err; |
1409 | if ((sigalg->flags & SIGALG_FLAG_RSA_PSS0x00000001) && |
1410 | (!EVP_PKEY_CTX_set_rsa_padding(pctx,RSA_pkey_ctx_ctrl(pctx, -1, (0x1000 + 1), 6, ((void*)0)) |
1411 | RSA_PKCS1_PSS_PADDING)RSA_pkey_ctx_ctrl(pctx, -1, (0x1000 + 1), 6, ((void*)0)) || |
1412 | !EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, -1)RSA_pkey_ctx_ctrl(pctx, ((1<<3)|(1<<4)), (0x1000 + 2), -1, ((void*)0)))) |
1413 | goto err; |
1414 | if (!EVP_DigestVerifyUpdate(md_ctx, s->s3->server_random,EVP_DigestUpdate(md_ctx,s->s3->server_random,32) |
1415 | SSL3_RANDOM_SIZE)EVP_DigestUpdate(md_ctx,s->s3->server_random,32)) |
1416 | goto err; |
1417 | if (!EVP_DigestVerifyUpdate(md_ctx, param, param_len)EVP_DigestUpdate(md_ctx,param,param_len)) |
1418 | goto err; |
1419 | if (EVP_DigestVerifyFinal(md_ctx, CBS_data(&signature), |
1420 | CBS_len(&signature)) <= 0) { |
1421 | al = SSL_AD_DECRYPT_ERROR51; |
1422 | SSLerror(s, SSL_R_BAD_SIGNATURE)SSL_error_internal(s, 123, "/usr/src/lib/libssl/ssl_clnt.c", 1422 ); |
1423 | goto fatal_err; |
1424 | } |
1425 | } |
1426 | |
1427 | if (CBS_len(&cbs) != 0) { |
1428 | al = SSL_AD_DECODE_ERROR50; |
1429 | SSLerror(s, SSL_R_EXTRA_DATA_IN_MESSAGE)SSL_error_internal(s, 153, "/usr/src/lib/libssl/ssl_clnt.c", 1429 ); |
1430 | goto fatal_err; |
1431 | } |
1432 | |
1433 | EVP_MD_CTX_free(md_ctx); |
1434 | |
1435 | return (1); |
1436 | |
1437 | decode_err: |
1438 | al = SSL_AD_DECODE_ERROR50; |
1439 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1439 ); |
1440 | |
1441 | fatal_err: |
1442 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); |
1443 | |
1444 | err: |
1445 | EVP_MD_CTX_free(md_ctx); |
1446 | |
1447 | return (-1); |
1448 | } |
1449 | |
1450 | int |
1451 | ssl3_get_certificate_request(SSL *s) |
1452 | { |
1453 | CBS cert_request, cert_types, rdn_list; |
1454 | X509_NAME *xn = NULL((void*)0); |
1455 | const unsigned char *q; |
1456 | STACK_OF(X509_NAME)struct stack_st_X509_NAME *ca_sk = NULL((void*)0); |
1457 | int ret; |
1458 | |
1459 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_CERT_REQ_A(0x150|0x1000), |
1460 | SSL3_ST_CR_CERT_REQ_B(0x151|0x1000), -1, s->internal->max_cert_list)) <= 0) |
1461 | return ret; |
1462 | |
1463 | ret = 0; |
1464 | |
1465 | S3I(s)(s->s3->internal)->hs.tls12.cert_request = 0; |
1466 | |
1467 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type == SSL3_MT_SERVER_DONE14) { |
1468 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
1469 | /* |
1470 | * If we get here we don't need any cached handshake records |
1471 | * as we wont be doing client auth. |
1472 | */ |
1473 | tls1_transcript_free(s); |
1474 | return (1); |
1475 | } |
1476 | |
1477 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_CERTIFICATE_REQUEST13) { |
1478 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_UNEXPECTED_MESSAGE10); |
1479 | SSLerror(s, SSL_R_WRONG_MESSAGE_TYPE)SSL_error_internal(s, 262, "/usr/src/lib/libssl/ssl_clnt.c", 1479 ); |
1480 | goto err; |
1481 | } |
1482 | |
1483 | /* TLS does not like anon-DH with client cert */ |
1484 | if (S3I(s)(s->s3->internal)->hs.cipher->algorithm_auth & SSL_aNULL0x00000004L) { |
1485 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_UNEXPECTED_MESSAGE10); |
1486 | SSLerror(s, SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER)SSL_error_internal(s, 232, "/usr/src/lib/libssl/ssl_clnt.c", 1486 ); |
1487 | goto err; |
1488 | } |
1489 | |
1490 | if (s->internal->init_num < 0) |
1491 | goto decode_err; |
1492 | CBS_init(&cert_request, s->internal->init_msg, s->internal->init_num); |
1493 | |
1494 | if ((ca_sk = sk_X509_NAME_new(ca_dn_cmp)((struct stack_st_X509_NAME *)sk_new(((int (*)(const void *, const void *)) ((1 ? (ca_dn_cmp) : (int (*)(const X509_NAME * const *, const X509_NAME * const *))0)))))) == NULL((void*)0)) { |
1495 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1495); |
1496 | goto err; |
1497 | } |
1498 | |
1499 | if (!CBS_get_u8_length_prefixed(&cert_request, &cert_types)) |
1500 | goto decode_err; |
1501 | |
1502 | if (SSL_USE_SIGALGS(s)(s->method->enc_flags & (1 << 1))) { |
1503 | CBS sigalgs; |
1504 | |
1505 | if (CBS_len(&cert_request) < 2) { |
1506 | SSLerror(s, SSL_R_DATA_LENGTH_TOO_LONG)SSL_error_internal(s, 146, "/usr/src/lib/libssl/ssl_clnt.c", 1506 ); |
1507 | goto err; |
1508 | } |
1509 | if (!CBS_get_u16_length_prefixed(&cert_request, &sigalgs)) { |
1510 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1511 | SSLerror(s, SSL_R_DATA_LENGTH_TOO_LONG)SSL_error_internal(s, 146, "/usr/src/lib/libssl/ssl_clnt.c", 1511 ); |
1512 | goto err; |
1513 | } |
1514 | if (CBS_len(&sigalgs) % 2 != 0 || CBS_len(&sigalgs) > 64) { |
1515 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1516 | SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR)SSL_error_internal(s, 360, "/usr/src/lib/libssl/ssl_clnt.c", 1516 ); |
1517 | goto err; |
1518 | } |
1519 | if (!CBS_stow(&sigalgs, &S3I(s)(s->s3->internal)->hs.sigalgs, |
1520 | &S3I(s)(s->s3->internal)->hs.sigalgs_len)) |
1521 | goto err; |
1522 | } |
1523 | |
1524 | /* get the CA RDNs */ |
1525 | if (CBS_len(&cert_request) < 2) { |
1526 | SSLerror(s, SSL_R_DATA_LENGTH_TOO_LONG)SSL_error_internal(s, 146, "/usr/src/lib/libssl/ssl_clnt.c", 1526 ); |
1527 | goto err; |
1528 | } |
1529 | |
1530 | if (!CBS_get_u16_length_prefixed(&cert_request, &rdn_list) || |
1531 | CBS_len(&cert_request) != 0) { |
1532 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1533 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1533 ); |
1534 | goto err; |
1535 | } |
1536 | |
1537 | while (CBS_len(&rdn_list) > 0) { |
1538 | CBS rdn; |
1539 | |
1540 | if (CBS_len(&rdn_list) < 2) { |
1541 | SSLerror(s, SSL_R_DATA_LENGTH_TOO_LONG)SSL_error_internal(s, 146, "/usr/src/lib/libssl/ssl_clnt.c", 1541 ); |
1542 | goto err; |
1543 | } |
1544 | |
1545 | if (!CBS_get_u16_length_prefixed(&rdn_list, &rdn)) { |
1546 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1547 | SSLerror(s, SSL_R_CA_DN_TOO_LONG)SSL_error_internal(s, 132, "/usr/src/lib/libssl/ssl_clnt.c", 1547 ); |
1548 | goto err; |
1549 | } |
1550 | |
1551 | q = CBS_data(&rdn); |
1552 | if ((xn = d2i_X509_NAME(NULL((void*)0), &q, CBS_len(&rdn))) == NULL((void*)0)) { |
1553 | ssl3_send_alert(s, SSL3_AL_FATAL2, |
1554 | SSL_AD_DECODE_ERROR50); |
1555 | SSLerror(s, ERR_R_ASN1_LIB)SSL_error_internal(s, 13, "/usr/src/lib/libssl/ssl_clnt.c", 1555 ); |
1556 | goto err; |
1557 | } |
1558 | |
1559 | if (q != CBS_data(&rdn) + CBS_len(&rdn)) { |
1560 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1561 | SSLerror(s, SSL_R_CA_DN_LENGTH_MISMATCH)SSL_error_internal(s, 131, "/usr/src/lib/libssl/ssl_clnt.c", 1561 ); |
1562 | goto err; |
1563 | } |
1564 | if (!sk_X509_NAME_push(ca_sk, xn)sk_push(((_STACK*) (1 ? (ca_sk) : (struct stack_st_X509_NAME* )0)), ((void*) (1 ? (xn) : (X509_NAME*)0)))) { |
1565 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1565); |
1566 | goto err; |
1567 | } |
1568 | xn = NULL((void*)0); /* avoid free in err block */ |
1569 | } |
1570 | |
1571 | /* we should setup a certificate to return.... */ |
1572 | S3I(s)(s->s3->internal)->hs.tls12.cert_request = 1; |
1573 | sk_X509_NAME_pop_free(S3I(s)->hs.tls12.ca_names, X509_NAME_free)sk_pop_free(((_STACK*) (1 ? ((s->s3->internal)->hs.tls12 .ca_names) : (struct stack_st_X509_NAME*)0)), ((void (*)(void *)) ((1 ? (X509_NAME_free) : (void (*)(X509_NAME *))0)))); |
1574 | S3I(s)(s->s3->internal)->hs.tls12.ca_names = ca_sk; |
1575 | ca_sk = NULL((void*)0); |
1576 | |
1577 | ret = 1; |
1578 | if (0) { |
1579 | decode_err: |
1580 | SSLerror(s, SSL_R_BAD_PACKET_LENGTH)SSL_error_internal(s, 115, "/usr/src/lib/libssl/ssl_clnt.c", 1580 ); |
1581 | } |
1582 | err: |
1583 | X509_NAME_free(xn); |
1584 | sk_X509_NAME_pop_free(ca_sk, X509_NAME_free)sk_pop_free(((_STACK*) (1 ? (ca_sk) : (struct stack_st_X509_NAME *)0)), ((void (*)(void *)) ((1 ? (X509_NAME_free) : (void (*) (X509_NAME *))0)))); |
1585 | return (ret); |
1586 | } |
1587 | |
1588 | static int |
1589 | ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
1590 | { |
1591 | return (X509_NAME_cmp(*a, *b)); |
1592 | } |
1593 | |
1594 | int |
1595 | ssl3_get_new_session_ticket(SSL *s) |
1596 | { |
1597 | uint32_t lifetime_hint; |
1598 | CBS cbs, session_ticket; |
1599 | int al, ret; |
1600 | |
1601 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_SESSION_TICKET_A(0x1E0|0x1000), |
1602 | SSL3_ST_CR_SESSION_TICKET_B(0x1E1|0x1000), -1, 16384)) <= 0) |
1603 | return ret; |
1604 | |
1605 | ret = 0; |
Value stored to 'ret' is never read | |
1606 | |
1607 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type == SSL3_MT_FINISHED20) { |
1608 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
1609 | return (1); |
1610 | } |
1611 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_NEWSESSION_TICKET4) { |
1612 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
1613 | SSLerror(s, SSL_R_BAD_MESSAGE_TYPE)SSL_error_internal(s, 114, "/usr/src/lib/libssl/ssl_clnt.c", 1613 ); |
1614 | goto fatal_err; |
1615 | } |
1616 | |
1617 | if (s->internal->init_num < 0) { |
1618 | al = SSL_AD_DECODE_ERROR50; |
1619 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1619 ); |
1620 | goto fatal_err; |
1621 | } |
1622 | |
1623 | CBS_init(&cbs, s->internal->init_msg, s->internal->init_num); |
1624 | if (!CBS_get_u32(&cbs, &lifetime_hint) || |
1625 | !CBS_get_u16_length_prefixed(&cbs, &session_ticket) || |
1626 | CBS_len(&cbs) != 0) { |
1627 | al = SSL_AD_DECODE_ERROR50; |
1628 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1628 ); |
1629 | goto fatal_err; |
1630 | } |
1631 | s->session->tlsext_tick_lifetime_hint = lifetime_hint; |
1632 | |
1633 | if (!CBS_stow(&session_ticket, &s->session->tlsext_tick, |
1634 | &s->session->tlsext_ticklen)) { |
1635 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1635); |
1636 | goto err; |
1637 | } |
1638 | |
1639 | /* |
1640 | * There are two ways to detect a resumed ticket sesion. |
1641 | * One is to set an appropriate session ID and then the server |
1642 | * must return a match in ServerHello. This allows the normal |
1643 | * client session ID matching to work and we know much |
1644 | * earlier that the ticket has been accepted. |
1645 | * |
1646 | * The other way is to set zero length session ID when the |
1647 | * ticket is presented and rely on the handshake to determine |
1648 | * session resumption. |
1649 | * |
1650 | * We choose the former approach because this fits in with |
1651 | * assumptions elsewhere in OpenSSL. The session ID is set |
1652 | * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the |
1653 | * ticket. |
1654 | */ |
1655 | EVP_Digest(CBS_data(&session_ticket), CBS_len(&session_ticket), |
1656 | s->session->session_id, &s->session->session_id_length, |
1657 | EVP_sha256(), NULL((void*)0)); |
1658 | ret = 1; |
1659 | return (ret); |
1660 | fatal_err: |
1661 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); |
1662 | err: |
1663 | return (-1); |
1664 | } |
1665 | |
1666 | int |
1667 | ssl3_get_cert_status(SSL *s) |
1668 | { |
1669 | CBS cert_status, response; |
1670 | uint8_t status_type; |
1671 | int al, ret; |
1672 | |
1673 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_CERT_STATUS_A(0x1F0|0x1000), |
1674 | SSL3_ST_CR_CERT_STATUS_B(0x1F1|0x1000), -1, 16384)) <= 0) |
1675 | return ret; |
1676 | |
1677 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type == SSL3_MT_SERVER_KEY_EXCHANGE12) { |
1678 | /* |
1679 | * Tell the callback the server did not send us an OSCP |
1680 | * response, and has decided to head directly to key exchange. |
1681 | */ |
1682 | if (s->ctx->internal->tlsext_status_cb) { |
1683 | free(s->internal->tlsext_ocsp_resp); |
1684 | s->internal->tlsext_ocsp_resp = NULL((void*)0); |
1685 | s->internal->tlsext_ocsp_resp_len = 0; |
1686 | |
1687 | ret = s->ctx->internal->tlsext_status_cb(s, |
1688 | s->ctx->internal->tlsext_status_arg); |
1689 | if (ret == 0) { |
1690 | al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE113; |
1691 | SSLerror(s, SSL_R_INVALID_STATUS_RESPONSE)SSL_error_internal(s, 328, "/usr/src/lib/libssl/ssl_clnt.c", 1691 ); |
1692 | goto fatal_err; |
1693 | } |
1694 | if (ret < 0) { |
1695 | al = SSL_AD_INTERNAL_ERROR80; |
1696 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1696); |
1697 | goto fatal_err; |
1698 | } |
1699 | } |
1700 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
1701 | return (1); |
1702 | } |
1703 | |
1704 | if (S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_CERTIFICATE11 && |
1705 | S3I(s)(s->s3->internal)->hs.tls12.message_type != SSL3_MT_CERTIFICATE_STATUS22) { |
1706 | al = SSL_AD_UNEXPECTED_MESSAGE10; |
1707 | SSLerror(s, SSL_R_BAD_MESSAGE_TYPE)SSL_error_internal(s, 114, "/usr/src/lib/libssl/ssl_clnt.c", 1707 ); |
1708 | goto fatal_err; |
1709 | } |
1710 | |
1711 | if (s->internal->init_num < 0) { |
1712 | /* need at least status type + length */ |
1713 | al = SSL_AD_DECODE_ERROR50; |
1714 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1714 ); |
1715 | goto fatal_err; |
1716 | } |
1717 | |
1718 | CBS_init(&cert_status, s->internal->init_msg, s->internal->init_num); |
1719 | if (!CBS_get_u8(&cert_status, &status_type) || |
1720 | CBS_len(&cert_status) < 3) { |
1721 | /* need at least status type + length */ |
1722 | al = SSL_AD_DECODE_ERROR50; |
1723 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1723 ); |
1724 | goto fatal_err; |
1725 | } |
1726 | |
1727 | if (status_type != TLSEXT_STATUSTYPE_ocsp1) { |
1728 | al = SSL_AD_DECODE_ERROR50; |
1729 | SSLerror(s, SSL_R_UNSUPPORTED_STATUS_TYPE)SSL_error_internal(s, 329, "/usr/src/lib/libssl/ssl_clnt.c", 1729 ); |
1730 | goto fatal_err; |
1731 | } |
1732 | |
1733 | if (!CBS_get_u24_length_prefixed(&cert_status, &response) || |
1734 | CBS_len(&cert_status) != 0) { |
1735 | al = SSL_AD_DECODE_ERROR50; |
1736 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1736 ); |
1737 | goto fatal_err; |
1738 | } |
1739 | |
1740 | if (!CBS_stow(&response, &s->internal->tlsext_ocsp_resp, |
1741 | &s->internal->tlsext_ocsp_resp_len)) { |
1742 | al = SSL_AD_INTERNAL_ERROR80; |
1743 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1743); |
1744 | goto fatal_err; |
1745 | } |
1746 | |
1747 | if (s->ctx->internal->tlsext_status_cb) { |
1748 | int ret; |
1749 | ret = s->ctx->internal->tlsext_status_cb(s, |
1750 | s->ctx->internal->tlsext_status_arg); |
1751 | if (ret == 0) { |
1752 | al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE113; |
1753 | SSLerror(s, SSL_R_INVALID_STATUS_RESPONSE)SSL_error_internal(s, 328, "/usr/src/lib/libssl/ssl_clnt.c", 1753 ); |
1754 | goto fatal_err; |
1755 | } |
1756 | if (ret < 0) { |
1757 | al = SSL_AD_INTERNAL_ERROR80; |
1758 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1758); |
1759 | goto fatal_err; |
1760 | } |
1761 | } |
1762 | return (1); |
1763 | fatal_err: |
1764 | ssl3_send_alert(s, SSL3_AL_FATAL2, al); |
1765 | return (-1); |
1766 | } |
1767 | |
1768 | int |
1769 | ssl3_get_server_done(SSL *s) |
1770 | { |
1771 | int ret; |
1772 | |
1773 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_SRVR_DONE_A(0x160|0x1000), |
1774 | SSL3_ST_CR_SRVR_DONE_B(0x161|0x1000), SSL3_MT_SERVER_DONE14, |
1775 | 30 /* should be very small, like 0 :-) */)) <= 0) |
1776 | return ret; |
1777 | |
1778 | if (s->internal->init_num != 0) { |
1779 | /* should contain no data */ |
1780 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_DECODE_ERROR50); |
1781 | SSLerror(s, SSL_R_LENGTH_MISMATCH)SSL_error_internal(s, 159, "/usr/src/lib/libssl/ssl_clnt.c", 1781 ); |
1782 | return -1; |
1783 | } |
1784 | |
1785 | return 1; |
1786 | } |
1787 | |
1788 | static int |
1789 | ssl3_send_client_kex_rsa(SSL *s, CBB *cbb) |
1790 | { |
1791 | unsigned char pms[SSL_MAX_MASTER_KEY_LENGTH48]; |
1792 | unsigned char *enc_pms = NULL((void*)0); |
1793 | uint16_t max_legacy_version; |
1794 | EVP_PKEY *pkey; |
1795 | RSA *rsa; |
1796 | int ret = 0; |
1797 | int enc_len; |
1798 | CBB epms; |
1799 | |
1800 | /* |
1801 | * RSA-Encrypted Premaster Secret Message - RFC 5246 section 7.4.7.1. |
1802 | */ |
1803 | |
1804 | pkey = X509_get0_pubkey(s->session->peer_cert); |
1805 | if (pkey == NULL((void*)0) || (rsa = EVP_PKEY_get0_RSA(pkey)) == NULL((void*)0)) { |
1806 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1806); |
1807 | goto err; |
1808 | } |
1809 | |
1810 | /* |
1811 | * Our maximum legacy protocol version - while RFC 5246 section 7.4.7.1 |
1812 | * says "The latest (newest) version supported by the client", if we're |
1813 | * doing RSA key exchange then we have to presume that we're talking to |
1814 | * a server that does not understand the supported versions extension |
1815 | * and therefore our maximum version is that sent in the ClientHello. |
1816 | */ |
1817 | if (!ssl_max_legacy_version(s, &max_legacy_version)) |
1818 | goto err; |
1819 | pms[0] = max_legacy_version >> 8; |
1820 | pms[1] = max_legacy_version & 0xff; |
1821 | arc4random_buf(&pms[2], sizeof(pms) - 2); |
1822 | |
1823 | if ((enc_pms = malloc(RSA_size(rsa))) == NULL((void*)0)) { |
1824 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1824); |
1825 | goto err; |
1826 | } |
1827 | |
1828 | enc_len = RSA_public_encrypt(sizeof(pms), pms, enc_pms, rsa, |
1829 | RSA_PKCS1_PADDING1); |
1830 | if (enc_len <= 0) { |
1831 | SSLerror(s, SSL_R_BAD_RSA_ENCRYPT)SSL_error_internal(s, 119, "/usr/src/lib/libssl/ssl_clnt.c", 1831 ); |
1832 | goto err; |
1833 | } |
1834 | |
1835 | if (!CBB_add_u16_length_prefixed(cbb, &epms)) |
1836 | goto err; |
1837 | if (!CBB_add_bytes(&epms, enc_pms, enc_len)) |
1838 | goto err; |
1839 | if (!CBB_flush(cbb)) |
1840 | goto err; |
1841 | |
1842 | if (!tls12_derive_master_secret(s, pms, sizeof(pms))) |
1843 | goto err; |
1844 | |
1845 | ret = 1; |
1846 | |
1847 | err: |
1848 | explicit_bzero(pms, sizeof(pms)); |
1849 | free(enc_pms); |
1850 | |
1851 | return ret; |
1852 | } |
1853 | |
1854 | static int |
1855 | ssl3_send_client_kex_dhe(SSL *s, CBB *cbb) |
1856 | { |
1857 | uint8_t *key = NULL((void*)0); |
1858 | size_t key_len = 0; |
1859 | int ret = 0; |
1860 | |
1861 | /* Ensure that we have an ephemeral key from the server for DHE. */ |
1862 | if (S3I(s)(s->s3->internal)->hs.key_share == NULL((void*)0)) { |
1863 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_HANDSHAKE_FAILURE40); |
1864 | SSLerror(s, SSL_R_UNABLE_TO_FIND_DH_PARAMETERS)SSL_error_internal(s, 238, "/usr/src/lib/libssl/ssl_clnt.c", 1864 ); |
1865 | goto err; |
1866 | } |
1867 | |
1868 | if (!tls_key_share_generate(S3I(s)(s->s3->internal)->hs.key_share)) |
1869 | goto err; |
1870 | if (!tls_key_share_public(S3I(s)(s->s3->internal)->hs.key_share, cbb)) |
1871 | goto err; |
1872 | if (!tls_key_share_derive(S3I(s)(s->s3->internal)->hs.key_share, &key, &key_len)) |
1873 | goto err; |
1874 | |
1875 | if (!tls12_derive_master_secret(s, key, key_len)) |
1876 | goto err; |
1877 | |
1878 | ret = 1; |
1879 | |
1880 | err: |
1881 | freezero(key, key_len); |
1882 | |
1883 | return ret; |
1884 | } |
1885 | |
1886 | static int |
1887 | ssl3_send_client_kex_ecdhe(SSL *s, CBB *cbb) |
1888 | { |
1889 | uint8_t *key = NULL((void*)0); |
1890 | size_t key_len = 0; |
1891 | CBB public; |
1892 | int ret = 0; |
1893 | |
1894 | /* Ensure that we have an ephemeral key for ECDHE. */ |
1895 | if (S3I(s)(s->s3->internal)->hs.key_share == NULL((void*)0)) { |
1896 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_HANDSHAKE_FAILURE40); |
1897 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1897); |
1898 | goto err; |
1899 | } |
1900 | |
1901 | if (!tls_key_share_generate(S3I(s)(s->s3->internal)->hs.key_share)) |
1902 | goto err; |
1903 | |
1904 | if (!CBB_add_u8_length_prefixed(cbb, &public)) |
1905 | return 0; |
1906 | if (!tls_key_share_public(S3I(s)(s->s3->internal)->hs.key_share, &public)) |
1907 | goto err; |
1908 | if (!CBB_flush(cbb)) |
1909 | goto err; |
1910 | |
1911 | if (!tls_key_share_derive(S3I(s)(s->s3->internal)->hs.key_share, &key, &key_len)) |
1912 | goto err; |
1913 | |
1914 | if (!tls12_derive_master_secret(s, key, key_len)) |
1915 | goto err; |
1916 | |
1917 | ret = 1; |
1918 | |
1919 | err: |
1920 | freezero(key, key_len); |
1921 | |
1922 | return ret; |
1923 | } |
1924 | |
1925 | static int |
1926 | ssl3_send_client_kex_gost(SSL *s, CBB *cbb) |
1927 | { |
1928 | unsigned char premaster_secret[32], shared_ukm[32], tmp[256]; |
1929 | EVP_PKEY_CTX *pkey_ctx = NULL((void*)0); |
1930 | EVP_MD_CTX *ukm_hash = NULL((void*)0); |
1931 | EVP_PKEY *pkey; |
1932 | size_t msglen; |
1933 | unsigned int md_len; |
1934 | CBB gostblob; |
1935 | int nid; |
1936 | int ret = 0; |
1937 | |
1938 | /* Get server sertificate PKEY and create ctx from it */ |
1939 | pkey = X509_get0_pubkey(s->session->peer_cert); |
1940 | if (pkey == NULL((void*)0) || s->session->peer_cert_type != SSL_PKEY_GOST012) { |
1941 | SSLerror(s, SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER)SSL_error_internal(s, 330, "/usr/src/lib/libssl/ssl_clnt.c", 1941 ); |
1942 | goto err; |
1943 | } |
1944 | if ((pkey_ctx = EVP_PKEY_CTX_new(pkey, NULL((void*)0))) == NULL((void*)0)) { |
1945 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1945); |
1946 | goto err; |
1947 | } |
1948 | |
1949 | /* |
1950 | * If we have send a certificate, and certificate key parameters match |
1951 | * those of server certificate, use certificate key for key exchange. |
1952 | * Otherwise, generate ephemeral key pair. |
1953 | */ |
1954 | if (EVP_PKEY_encrypt_init(pkey_ctx) <= 0) |
1955 | goto err; |
1956 | |
1957 | /* Generate session key. */ |
1958 | arc4random_buf(premaster_secret, sizeof(premaster_secret)); |
1959 | |
1960 | /* |
1961 | * If we have client certificate, use its secret as peer key. |
1962 | * XXX - this presumably lacks PFS. |
1963 | */ |
1964 | if (S3I(s)(s->s3->internal)->hs.tls12.cert_request != 0 && |
1965 | s->cert->key->privatekey != NULL((void*)0)) { |
1966 | if (EVP_PKEY_derive_set_peer(pkey_ctx, |
1967 | s->cert->key->privatekey) <=0) { |
1968 | /* |
1969 | * If there was an error - just ignore it. |
1970 | * Ephemeral key would be used. |
1971 | */ |
1972 | ERR_clear_error(); |
1973 | } |
1974 | } |
1975 | |
1976 | /* |
1977 | * Compute shared IV and store it in algorithm-specific context data. |
1978 | */ |
1979 | if ((ukm_hash = EVP_MD_CTX_new()) == NULL((void*)0)) { |
1980 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 1980); |
1981 | goto err; |
1982 | } |
1983 | |
1984 | /* XXX check handshake hash instead. */ |
1985 | if (S3I(s)(s->s3->internal)->hs.cipher->algorithm2 & SSL_HANDSHAKE_MAC_GOST940x040) |
1986 | nid = NID_id_GostR3411_94809; |
1987 | else |
1988 | nid = NID_id_tc26_gost3411_2012_256941; |
1989 | if (!EVP_DigestInit(ukm_hash, EVP_get_digestbynid(nid)EVP_get_digestbyname(OBJ_nid2sn(nid)))) |
1990 | goto err; |
1991 | if (!EVP_DigestUpdate(ukm_hash, s->s3->client_random, SSL3_RANDOM_SIZE32)) |
1992 | goto err; |
1993 | if (!EVP_DigestUpdate(ukm_hash, s->s3->server_random, SSL3_RANDOM_SIZE32)) |
1994 | goto err; |
1995 | if (!EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len)) |
1996 | goto err; |
1997 | if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, EVP_PKEY_OP_ENCRYPT(1<<8), |
1998 | EVP_PKEY_CTRL_SET_IV8, 8, shared_ukm) < 0) { |
1999 | SSLerror(s, SSL_R_LIBRARY_BUG)SSL_error_internal(s, 274, "/usr/src/lib/libssl/ssl_clnt.c", 1999 ); |
2000 | goto err; |
2001 | } |
2002 | |
2003 | /* |
2004 | * Make GOST keytransport blob message, encapsulate it into sequence. |
2005 | */ |
2006 | msglen = 255; |
2007 | if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, premaster_secret, |
2008 | sizeof(premaster_secret)) < 0) { |
2009 | SSLerror(s, SSL_R_LIBRARY_BUG)SSL_error_internal(s, 274, "/usr/src/lib/libssl/ssl_clnt.c", 2009 ); |
2010 | goto err; |
2011 | } |
2012 | |
2013 | if (!CBB_add_asn1(cbb, &gostblob, CBS_ASN1_SEQUENCE(0x00 | 0x20 | 0x10))) |
2014 | goto err; |
2015 | if (!CBB_add_bytes(&gostblob, tmp, msglen)) |
2016 | goto err; |
2017 | if (!CBB_flush(cbb)) |
2018 | goto err; |
2019 | |
2020 | /* Check if pubkey from client certificate was used. */ |
2021 | if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY2, 2, |
2022 | NULL((void*)0)) > 0) |
2023 | s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY0x0010; |
2024 | |
2025 | if (!tls12_derive_master_secret(s, premaster_secret, 32)) |
2026 | goto err; |
2027 | |
2028 | ret = 1; |
2029 | |
2030 | err: |
2031 | explicit_bzero(premaster_secret, sizeof(premaster_secret)); |
2032 | EVP_PKEY_CTX_free(pkey_ctx); |
2033 | EVP_MD_CTX_free(ukm_hash); |
2034 | |
2035 | return ret; |
2036 | } |
2037 | |
2038 | int |
2039 | ssl3_send_client_key_exchange(SSL *s) |
2040 | { |
2041 | unsigned long alg_k; |
2042 | CBB cbb, kex; |
2043 | |
2044 | memset(&cbb, 0, sizeof(cbb)); |
2045 | |
2046 | if (S3I(s)(s->s3->internal)->hs.state == SSL3_ST_CW_KEY_EXCH_A(0x180|0x1000)) { |
2047 | alg_k = S3I(s)(s->s3->internal)->hs.cipher->algorithm_mkey; |
2048 | |
2049 | if (!ssl3_handshake_msg_start(s, &cbb, &kex, |
2050 | SSL3_MT_CLIENT_KEY_EXCHANGE16)) |
2051 | goto err; |
2052 | |
2053 | if (alg_k & SSL_kRSA0x00000001L) { |
2054 | if (!ssl3_send_client_kex_rsa(s, &kex)) |
2055 | goto err; |
2056 | } else if (alg_k & SSL_kDHE0x00000008L) { |
2057 | if (!ssl3_send_client_kex_dhe(s, &kex)) |
2058 | goto err; |
2059 | } else if (alg_k & SSL_kECDHE0x00000080L) { |
2060 | if (!ssl3_send_client_kex_ecdhe(s, &kex)) |
2061 | goto err; |
2062 | } else if (alg_k & SSL_kGOST0x00000200L) { |
2063 | if (!ssl3_send_client_kex_gost(s, &kex)) |
2064 | goto err; |
2065 | } else { |
2066 | ssl3_send_alert(s, SSL3_AL_FATAL2, |
2067 | SSL_AD_HANDSHAKE_FAILURE40); |
2068 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 2068); |
2069 | goto err; |
2070 | } |
2071 | |
2072 | if (!ssl3_handshake_msg_finish(s, &cbb)) |
2073 | goto err; |
2074 | |
2075 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_KEY_EXCH_B(0x181|0x1000); |
2076 | } |
2077 | |
2078 | /* SSL3_ST_CW_KEY_EXCH_B */ |
2079 | return (ssl3_handshake_write(s)); |
2080 | |
2081 | err: |
2082 | CBB_cleanup(&cbb); |
2083 | |
2084 | return (-1); |
2085 | } |
2086 | |
2087 | static int |
2088 | ssl3_send_client_verify_sigalgs(SSL *s, EVP_PKEY *pkey, |
2089 | const struct ssl_sigalg *sigalg, CBB *cert_verify) |
2090 | { |
2091 | CBB cbb_signature; |
2092 | EVP_PKEY_CTX *pctx = NULL((void*)0); |
2093 | EVP_MD_CTX *mctx = NULL((void*)0); |
2094 | const unsigned char *hdata; |
2095 | unsigned char *signature = NULL((void*)0); |
2096 | size_t signature_len, hdata_len; |
2097 | int ret = 0; |
2098 | |
2099 | if ((mctx = EVP_MD_CTX_new()) == NULL((void*)0)) |
2100 | goto err; |
2101 | |
2102 | if (!tls1_transcript_data(s, &hdata, &hdata_len)) { |
2103 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 2103); |
2104 | goto err; |
2105 | } |
2106 | if (!EVP_DigestSignInit(mctx, &pctx, sigalg->md(), NULL((void*)0), pkey)) { |
2107 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2107 ); |
2108 | goto err; |
2109 | } |
2110 | if (sigalg->key_type == EVP_PKEY_GOSTR01811 && |
2111 | EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN(1<<3), |
2112 | EVP_PKEY_CTRL_GOST_SIG_FORMAT(0x1000 +2), GOST_SIG_FORMAT_RS_LE1, NULL((void*)0)) <= 0) { |
2113 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2113 ); |
2114 | goto err; |
2115 | } |
2116 | if ((sigalg->flags & SIGALG_FLAG_RSA_PSS0x00000001) && |
2117 | (!EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING)RSA_pkey_ctx_ctrl(pctx, -1, (0x1000 + 1), 6, ((void*)0)) || |
2118 | !EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, -1)RSA_pkey_ctx_ctrl(pctx, ((1<<3)|(1<<4)), (0x1000 + 2), -1, ((void*)0)))) { |
2119 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2119 ); |
2120 | goto err; |
2121 | } |
2122 | if (!EVP_DigestSignUpdate(mctx, hdata, hdata_len)EVP_DigestUpdate(mctx,hdata,hdata_len)) { |
2123 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2123 ); |
2124 | goto err; |
2125 | } |
2126 | if (!EVP_DigestSignFinal(mctx, NULL((void*)0), &signature_len) || |
2127 | signature_len == 0) { |
2128 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2128 ); |
2129 | goto err; |
2130 | } |
2131 | if ((signature = calloc(1, signature_len)) == NULL((void*)0)) { |
2132 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 2132); |
2133 | goto err; |
2134 | } |
2135 | if (!EVP_DigestSignFinal(mctx, signature, &signature_len)) { |
2136 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2136 ); |
2137 | goto err; |
2138 | } |
2139 | |
2140 | if (!CBB_add_u16(cert_verify, sigalg->value)) |
2141 | goto err; |
2142 | if (!CBB_add_u16_length_prefixed(cert_verify, &cbb_signature)) |
2143 | goto err; |
2144 | if (!CBB_add_bytes(&cbb_signature, signature, signature_len)) |
2145 | goto err; |
2146 | if (!CBB_flush(cert_verify)) |
2147 | goto err; |
2148 | |
2149 | ret = 1; |
2150 | |
2151 | err: |
2152 | EVP_MD_CTX_free(mctx); |
2153 | free(signature); |
2154 | return ret; |
2155 | } |
2156 | |
2157 | static int |
2158 | ssl3_send_client_verify_rsa(SSL *s, EVP_PKEY *pkey, CBB *cert_verify) |
2159 | { |
2160 | CBB cbb_signature; |
2161 | RSA *rsa; |
2162 | unsigned char data[EVP_MAX_MD_SIZE64]; |
2163 | unsigned char *signature = NULL((void*)0); |
2164 | unsigned int signature_len; |
2165 | size_t data_len; |
2166 | int ret = 0; |
2167 | |
2168 | if (!tls1_transcript_hash_value(s, data, sizeof(data), &data_len)) |
2169 | goto err; |
2170 | if ((signature = calloc(1, EVP_PKEY_size(pkey))) == NULL((void*)0)) |
2171 | goto err; |
2172 | if ((rsa = EVP_PKEY_get0_RSA(pkey)) == NULL((void*)0)) |
2173 | goto err; |
2174 | if (RSA_sign(NID_md5_sha1114, data, data_len, signature, &signature_len, |
2175 | rsa) <= 0 ) { |
2176 | SSLerror(s, ERR_R_RSA_LIB)SSL_error_internal(s, 4, "/usr/src/lib/libssl/ssl_clnt.c", 2176 ); |
2177 | goto err; |
2178 | } |
2179 | |
2180 | if (!CBB_add_u16_length_prefixed(cert_verify, &cbb_signature)) |
2181 | goto err; |
2182 | if (!CBB_add_bytes(&cbb_signature, signature, signature_len)) |
2183 | goto err; |
2184 | if (!CBB_flush(cert_verify)) |
2185 | goto err; |
2186 | |
2187 | ret = 1; |
2188 | err: |
2189 | free(signature); |
2190 | return ret; |
2191 | } |
2192 | |
2193 | static int |
2194 | ssl3_send_client_verify_ec(SSL *s, EVP_PKEY *pkey, CBB *cert_verify) |
2195 | { |
2196 | CBB cbb_signature; |
2197 | EC_KEY *eckey; |
2198 | unsigned char data[EVP_MAX_MD_SIZE64]; |
2199 | unsigned char *signature = NULL((void*)0); |
2200 | unsigned int signature_len; |
2201 | int ret = 0; |
2202 | |
2203 | if (!tls1_transcript_hash_value(s, data, sizeof(data), NULL((void*)0))) |
2204 | goto err; |
2205 | if ((signature = calloc(1, EVP_PKEY_size(pkey))) == NULL((void*)0)) |
2206 | goto err; |
2207 | if ((eckey = EVP_PKEY_get0_EC_KEY(pkey)) == NULL((void*)0)) |
2208 | goto err; |
2209 | if (!ECDSA_sign(0, &data[MD5_DIGEST_LENGTH16], SHA_DIGEST_LENGTH20, |
2210 | signature, &signature_len, eckey)) { |
2211 | SSLerror(s, ERR_R_ECDSA_LIB)SSL_error_internal(s, 42, "/usr/src/lib/libssl/ssl_clnt.c", 2211 ); |
2212 | goto err; |
2213 | } |
2214 | |
2215 | if (!CBB_add_u16_length_prefixed(cert_verify, &cbb_signature)) |
2216 | goto err; |
2217 | if (!CBB_add_bytes(&cbb_signature, signature, signature_len)) |
2218 | goto err; |
2219 | if (!CBB_flush(cert_verify)) |
2220 | goto err; |
2221 | |
2222 | ret = 1; |
2223 | err: |
2224 | free(signature); |
2225 | return ret; |
2226 | } |
2227 | |
2228 | #ifndef OPENSSL_NO_GOST |
2229 | static int |
2230 | ssl3_send_client_verify_gost(SSL *s, EVP_PKEY *pkey, CBB *cert_verify) |
2231 | { |
2232 | CBB cbb_signature; |
2233 | EVP_MD_CTX *mctx; |
2234 | EVP_PKEY_CTX *pctx; |
2235 | const EVP_MD *md; |
2236 | const unsigned char *hdata; |
2237 | unsigned char *signature = NULL((void*)0); |
2238 | size_t signature_len; |
2239 | size_t hdata_len; |
2240 | int nid; |
2241 | int ret = 0; |
2242 | |
2243 | if ((mctx = EVP_MD_CTX_new()) == NULL((void*)0)) |
2244 | goto err; |
2245 | |
2246 | if (!tls1_transcript_data(s, &hdata, &hdata_len)) { |
2247 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 2247); |
2248 | goto err; |
2249 | } |
2250 | if (!EVP_PKEY_get_default_digest_nid(pkey, &nid) || |
2251 | (md = EVP_get_digestbynid(nid)EVP_get_digestbyname(OBJ_nid2sn(nid))) == NULL((void*)0)) { |
2252 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2252 ); |
2253 | goto err; |
2254 | } |
2255 | if (!EVP_DigestSignInit(mctx, &pctx, md, NULL((void*)0), pkey)) { |
2256 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2256 ); |
2257 | goto err; |
2258 | } |
2259 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN(1<<3), |
2260 | EVP_PKEY_CTRL_GOST_SIG_FORMAT(0x1000 +2), GOST_SIG_FORMAT_RS_LE1, NULL((void*)0)) <= 0) { |
2261 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2261 ); |
2262 | goto err; |
2263 | } |
2264 | if (!EVP_DigestSignUpdate(mctx, hdata, hdata_len)EVP_DigestUpdate(mctx,hdata,hdata_len)) { |
2265 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2265 ); |
2266 | goto err; |
2267 | } |
2268 | if (!EVP_DigestSignFinal(mctx, NULL((void*)0), &signature_len) || |
2269 | signature_len == 0) { |
2270 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2270 ); |
2271 | goto err; |
2272 | } |
2273 | if ((signature = calloc(1, signature_len)) == NULL((void*)0)) { |
2274 | SSLerror(s, ERR_R_MALLOC_FAILURE)SSL_error_internal(s, (1|64), "/usr/src/lib/libssl/ssl_clnt.c" , 2274); |
2275 | goto err; |
2276 | } |
2277 | if (!EVP_DigestSignFinal(mctx, signature, &signature_len)) { |
2278 | SSLerror(s, ERR_R_EVP_LIB)SSL_error_internal(s, 6, "/usr/src/lib/libssl/ssl_clnt.c", 2278 ); |
2279 | goto err; |
2280 | } |
2281 | |
2282 | if (!CBB_add_u16_length_prefixed(cert_verify, &cbb_signature)) |
2283 | goto err; |
2284 | if (!CBB_add_bytes(&cbb_signature, signature, signature_len)) |
2285 | goto err; |
2286 | if (!CBB_flush(cert_verify)) |
2287 | goto err; |
2288 | |
2289 | ret = 1; |
2290 | err: |
2291 | EVP_MD_CTX_free(mctx); |
2292 | free(signature); |
2293 | return ret; |
2294 | } |
2295 | #endif |
2296 | |
2297 | int |
2298 | ssl3_send_client_verify(SSL *s) |
2299 | { |
2300 | const struct ssl_sigalg *sigalg; |
2301 | CBB cbb, cert_verify; |
2302 | EVP_PKEY *pkey; |
2303 | |
2304 | memset(&cbb, 0, sizeof(cbb)); |
2305 | |
2306 | if (S3I(s)(s->s3->internal)->hs.state == SSL3_ST_CW_CERT_VRFY_A(0x190|0x1000)) { |
2307 | if (!ssl3_handshake_msg_start(s, &cbb, &cert_verify, |
2308 | SSL3_MT_CERTIFICATE_VERIFY15)) |
2309 | goto err; |
2310 | |
2311 | pkey = s->cert->key->privatekey; |
2312 | if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL((void*)0)) { |
2313 | SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR)SSL_error_internal(s, 360, "/usr/src/lib/libssl/ssl_clnt.c", 2313 ); |
2314 | goto err; |
2315 | } |
2316 | S3I(s)(s->s3->internal)->hs.our_sigalg = sigalg; |
2317 | |
2318 | /* |
2319 | * For TLS v1.2 send signature algorithm and signature using |
2320 | * agreed digest and cached handshake records. |
2321 | */ |
2322 | if (SSL_USE_SIGALGS(s)(s->method->enc_flags & (1 << 1))) { |
2323 | if (!ssl3_send_client_verify_sigalgs(s, pkey, sigalg, |
2324 | &cert_verify)) |
2325 | goto err; |
2326 | } else if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA6) { |
2327 | if (!ssl3_send_client_verify_rsa(s, pkey, &cert_verify)) |
2328 | goto err; |
2329 | } else if (EVP_PKEY_id(pkey) == EVP_PKEY_EC408) { |
2330 | if (!ssl3_send_client_verify_ec(s, pkey, &cert_verify)) |
2331 | goto err; |
2332 | #ifndef OPENSSL_NO_GOST |
2333 | } else if (EVP_PKEY_id(pkey) == NID_id_GostR3410_94812 || |
2334 | EVP_PKEY_id(pkey) == NID_id_GostR3410_2001811) { |
2335 | if (!ssl3_send_client_verify_gost(s, pkey, &cert_verify)) |
2336 | goto err; |
2337 | #endif |
2338 | } else { |
2339 | SSLerror(s, ERR_R_INTERNAL_ERROR)SSL_error_internal(s, (4|64), "/usr/src/lib/libssl/ssl_clnt.c" , 2339); |
2340 | goto err; |
2341 | } |
2342 | |
2343 | tls1_transcript_free(s); |
2344 | |
2345 | if (!ssl3_handshake_msg_finish(s, &cbb)) |
2346 | goto err; |
2347 | |
2348 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_VRFY_B(0x191|0x1000); |
2349 | } |
2350 | |
2351 | return (ssl3_handshake_write(s)); |
2352 | |
2353 | err: |
2354 | CBB_cleanup(&cbb); |
2355 | |
2356 | return (-1); |
2357 | } |
2358 | |
2359 | int |
2360 | ssl3_send_client_certificate(SSL *s) |
2361 | { |
2362 | EVP_PKEY *pkey = NULL((void*)0); |
2363 | X509 *x509 = NULL((void*)0); |
2364 | CBB cbb, client_cert; |
2365 | int i; |
2366 | |
2367 | memset(&cbb, 0, sizeof(cbb)); |
2368 | |
2369 | if (S3I(s)(s->s3->internal)->hs.state == SSL3_ST_CW_CERT_A(0x170|0x1000)) { |
2370 | if (s->cert->key->x509 == NULL((void*)0) || |
2371 | s->cert->key->privatekey == NULL((void*)0)) |
2372 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_B(0x171|0x1000); |
2373 | else |
2374 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_C(0x172|0x1000); |
2375 | } |
2376 | |
2377 | /* We need to get a client cert */ |
2378 | if (S3I(s)(s->s3->internal)->hs.state == SSL3_ST_CW_CERT_B(0x171|0x1000)) { |
2379 | /* |
2380 | * If we get an error, we need to |
2381 | * ssl->internal->rwstate = SSL_X509_LOOKUP; return(-1); |
2382 | * We then get retried later. |
2383 | */ |
2384 | i = ssl_do_client_cert_cb(s, &x509, &pkey); |
2385 | if (i < 0) { |
2386 | s->internal->rwstate = SSL_X509_LOOKUP4; |
2387 | return (-1); |
2388 | } |
2389 | s->internal->rwstate = SSL_NOTHING1; |
2390 | if ((i == 1) && (pkey != NULL((void*)0)) && (x509 != NULL((void*)0))) { |
2391 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_B(0x171|0x1000); |
2392 | if (!SSL_use_certificate(s, x509) || |
2393 | !SSL_use_PrivateKey(s, pkey)) |
2394 | i = 0; |
2395 | } else if (i == 1) { |
2396 | i = 0; |
2397 | SSLerror(s, SSL_R_BAD_DATA_RETURNED_BY_CALLBACK)SSL_error_internal(s, 106, "/usr/src/lib/libssl/ssl_clnt.c", 2397 ); |
2398 | } |
2399 | |
2400 | X509_free(x509); |
2401 | EVP_PKEY_free(pkey); |
2402 | if (i == 0) { |
2403 | S3I(s)(s->s3->internal)->hs.tls12.cert_request = 2; |
2404 | |
2405 | /* There is no client certificate to verify. */ |
2406 | tls1_transcript_free(s); |
2407 | } |
2408 | |
2409 | /* Ok, we have a cert */ |
2410 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_C(0x172|0x1000); |
2411 | } |
2412 | |
2413 | if (S3I(s)(s->s3->internal)->hs.state == SSL3_ST_CW_CERT_C(0x172|0x1000)) { |
2414 | if (!ssl3_handshake_msg_start(s, &cbb, &client_cert, |
2415 | SSL3_MT_CERTIFICATE11)) |
2416 | goto err; |
2417 | if (!ssl3_output_cert_chain(s, &client_cert, |
2418 | (S3I(s)(s->s3->internal)->hs.tls12.cert_request == 2) ? NULL((void*)0) : s->cert->key)) |
2419 | goto err; |
2420 | if (!ssl3_handshake_msg_finish(s, &cbb)) |
2421 | goto err; |
2422 | |
2423 | S3I(s)(s->s3->internal)->hs.state = SSL3_ST_CW_CERT_D(0x173|0x1000); |
2424 | } |
2425 | |
2426 | /* SSL3_ST_CW_CERT_D */ |
2427 | return (ssl3_handshake_write(s)); |
2428 | |
2429 | err: |
2430 | CBB_cleanup(&cbb); |
2431 | |
2432 | return (0); |
2433 | } |
2434 | |
2435 | #define has_bits(i,m)(((i)&(m)) == (m)) (((i)&(m)) == (m)) |
2436 | |
2437 | int |
2438 | ssl3_check_cert_and_algorithm(SSL *s) |
2439 | { |
2440 | long alg_k, alg_a; |
2441 | int nid = NID_undef0; |
2442 | int i; |
2443 | |
2444 | alg_k = S3I(s)(s->s3->internal)->hs.cipher->algorithm_mkey; |
2445 | alg_a = S3I(s)(s->s3->internal)->hs.cipher->algorithm_auth; |
2446 | |
2447 | /* We don't have a certificate. */ |
2448 | if (alg_a & SSL_aNULL0x00000004L) |
2449 | return (1); |
2450 | |
2451 | if (S3I(s)(s->s3->internal)->hs.key_share != NULL((void*)0)) |
2452 | nid = tls_key_share_nid(S3I(s)(s->s3->internal)->hs.key_share); |
2453 | |
2454 | /* This is the passed certificate. */ |
2455 | |
2456 | if (s->session->peer_cert_type == SSL_PKEY_ECC1) { |
2457 | if (!ssl_check_srvr_ecc_cert_and_alg(s, s->session->peer_cert)) { |
2458 | SSLerror(s, SSL_R_BAD_ECC_CERT)SSL_error_internal(s, 304, "/usr/src/lib/libssl/ssl_clnt.c", 2458 ); |
2459 | goto fatal_err; |
2460 | } |
2461 | return (1); |
2462 | } |
2463 | |
2464 | i = X509_certificate_type(s->session->peer_cert, NULL((void*)0)); |
2465 | |
2466 | /* Check that we have a certificate if we require one. */ |
2467 | if ((alg_a & SSL_aRSA0x00000001L) && !has_bits(i, EVP_PK_RSA|EVP_PKT_SIGN)(((i)&(0x0001|0x0010)) == (0x0001|0x0010))) { |
2468 | SSLerror(s, SSL_R_MISSING_RSA_SIGNING_CERT)SSL_error_internal(s, 170, "/usr/src/lib/libssl/ssl_clnt.c", 2468 ); |
2469 | goto fatal_err; |
2470 | } |
2471 | if ((alg_k & SSL_kRSA0x00000001L) && !has_bits(i, EVP_PK_RSA|EVP_PKT_ENC)(((i)&(0x0001|0x0020)) == (0x0001|0x0020))) { |
2472 | SSLerror(s, SSL_R_MISSING_RSA_ENCRYPTING_CERT)SSL_error_internal(s, 169, "/usr/src/lib/libssl/ssl_clnt.c", 2472 ); |
2473 | goto fatal_err; |
2474 | } |
2475 | if ((alg_k & SSL_kDHE0x00000008L) && |
2476 | !(has_bits(i, EVP_PK_DH|EVP_PKT_EXCH)(((i)&(0x0004|0x0040)) == (0x0004|0x0040)) || (nid == NID_dhKeyAgreement28))) { |
2477 | SSLerror(s, SSL_R_MISSING_DH_KEY)SSL_error_internal(s, 163, "/usr/src/lib/libssl/ssl_clnt.c", 2477 ); |
2478 | goto fatal_err; |
2479 | } |
2480 | |
2481 | return (1); |
2482 | |
2483 | fatal_err: |
2484 | ssl3_send_alert(s, SSL3_AL_FATAL2, SSL_AD_HANDSHAKE_FAILURE40); |
2485 | |
2486 | return (0); |
2487 | } |
2488 | |
2489 | /* |
2490 | * Check to see if handshake is full or resumed. Usually this is just a |
2491 | * case of checking to see if a cache hit has occurred. In the case of |
2492 | * session tickets we have to check the next message to be sure. |
2493 | */ |
2494 | |
2495 | int |
2496 | ssl3_check_finished(SSL *s) |
2497 | { |
2498 | int ret; |
2499 | |
2500 | /* If we have no ticket it cannot be a resumed session. */ |
2501 | if (!s->session->tlsext_tick) |
2502 | return (1); |
2503 | /* this function is called when we really expect a Certificate |
2504 | * message, so permit appropriate message length */ |
2505 | if ((ret = ssl3_get_message(s, SSL3_ST_CR_CERT_A(0x130|0x1000), |
2506 | SSL3_ST_CR_CERT_B(0x131|0x1000), -1, s->internal->max_cert_list)) <= 0) |
2507 | return ret; |
2508 | |
2509 | S3I(s)(s->s3->internal)->hs.tls12.reuse_message = 1; |
2510 | if ((S3I(s)(s->s3->internal)->hs.tls12.message_type == SSL3_MT_FINISHED20) || |
2511 | (S3I(s)(s->s3->internal)->hs.tls12.message_type == SSL3_MT_NEWSESSION_TICKET4)) |
2512 | return (2); |
2513 | |
2514 | return (1); |
2515 | } |
2516 | |
2517 | int |
2518 | ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey) |
2519 | { |
2520 | int i = 0; |
2521 | |
2522 | #ifndef OPENSSL_NO_ENGINE |
2523 | if (s->ctx->internal->client_cert_engine) { |
2524 | i = ENGINE_load_ssl_client_cert( |
2525 | s->ctx->internal->client_cert_engine, s, |
2526 | SSL_get_client_CA_list(s), px509, ppkey, NULL((void*)0), NULL((void*)0), NULL((void*)0)); |
2527 | if (i != 0) |
2528 | return (i); |
2529 | } |
2530 | #endif |
2531 | if (s->ctx->internal->client_cert_cb) |
2532 | i = s->ctx->internal->client_cert_cb(s, px509, ppkey); |
2533 | return (i); |
2534 | } |