1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
56 */
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
59 *
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
62 * are met:
63 *
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
66 *
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
76 *
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
81 *
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
85 *
86 * 6. Redistributions of any form whatsoever must retain the following
87 * acknowledgment:
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
90 *
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
104 *
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
108 *
109 */
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 *
113 * Portions of the attached software ("Contribution") are developed by
114 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
115 *
116 * The Contribution is licensed pursuant to the OpenSSL open source
117 * license provided above.
118 *
119 * ECC cipher suite support in OpenSSL originally written by
120 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
121 *
122 */
123 /* ====================================================================
124 * Copyright 2005 Nokia. All rights reserved.
125 *
126 * The portions of the attached software ("Contribution") is developed by
127 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
128 * license.
129 *
130 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
131 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
132 * support (see RFC 4279) to OpenSSL.
133 *
134 * No patent licenses or other rights except those expressly stated in
135 * the OpenSSL open source license shall be deemed granted or received
136 * expressly, by implication, estoppel, or otherwise.
137 *
138 * No assurances are provided by Nokia that the Contribution does not
139 * infringe the patent or other intellectual property rights of any third
140 * party or that the license provides you with all the necessary rights
141 * to make use of the Contribution.
142 *
143 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
144 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
145 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
146 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
147 * OTHERWISE. */
148
149 #include <assert.h>
150 #include <stdio.h>
151 #include <string.h>
152
153 #include <openssl/buf.h>
154 #include <openssl/dh.h>
155 #include <openssl/err.h>
156 #include <openssl/md5.h>
157 #include <openssl/mem.h>
158 #include <openssl/obj.h>
159
160 #include "internal.h"
161
162
163 const SSL3_ENC_METHOD SSLv3_enc_data = {
164 ssl3_prf,
165 tls1_setup_key_block,
166 tls1_generate_master_secret,
167 tls1_change_cipher_state,
168 ssl3_final_finish_mac,
169 ssl3_cert_verify_mac,
170 SSL3_MD_CLIENT_FINISHED_CONST, 4,
171 SSL3_MD_SERVER_FINISHED_CONST, 4,
172 ssl3_alert_code,
173 tls1_export_keying_material,
174 0,
175 };
176
ssl3_supports_cipher(const SSL_CIPHER * cipher)177 int ssl3_supports_cipher(const SSL_CIPHER *cipher) {
178 return 1;
179 }
180
ssl3_set_handshake_header(SSL * s,int htype,unsigned long len)181 int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len) {
182 uint8_t *p = (uint8_t *)s->init_buf->data;
183 *(p++) = htype;
184 l2n3(len, p);
185 s->init_num = (int)len + SSL3_HM_HEADER_LENGTH;
186 s->init_off = 0;
187
188 /* Add the message to the handshake hash. */
189 return ssl3_finish_mac(s, (uint8_t *)s->init_buf->data, s->init_num);
190 }
191
ssl3_handshake_write(SSL * s)192 int ssl3_handshake_write(SSL *s) { return ssl3_do_write(s, SSL3_RT_HANDSHAKE); }
193
ssl3_new(SSL * s)194 int ssl3_new(SSL *s) {
195 SSL3_STATE *s3;
196
197 s3 = OPENSSL_malloc(sizeof *s3);
198 if (s3 == NULL) {
199 goto err;
200 }
201 memset(s3, 0, sizeof *s3);
202 memset(s3->rrec.seq_num, 0, sizeof(s3->rrec.seq_num));
203
204 s->s3 = s3;
205
206 /* Set the version to the highest supported version for TLS. This controls the
207 * initial state of |s->enc_method| and what the API reports as the version
208 * prior to negotiation.
209 *
210 * TODO(davidben): This is fragile and confusing. */
211 s->version = TLS1_2_VERSION;
212 return 1;
213 err:
214 return 0;
215 }
216
ssl3_free(SSL * s)217 void ssl3_free(SSL *s) {
218 if (s == NULL || s->s3 == NULL) {
219 return;
220 }
221
222 BUF_MEM_free(s->s3->sniff_buffer);
223 ssl3_cleanup_key_block(s);
224 ssl3_release_read_buffer(s);
225 ssl3_release_write_buffer(s);
226 DH_free(s->s3->tmp.dh);
227 EC_KEY_free(s->s3->tmp.ecdh);
228
229 sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
230 OPENSSL_free(s->s3->tmp.certificate_types);
231 OPENSSL_free(s->s3->tmp.peer_ecpointformatlist);
232 OPENSSL_free(s->s3->tmp.peer_ellipticcurvelist);
233 OPENSSL_free(s->s3->tmp.peer_psk_identity_hint);
234 BIO_free(s->s3->handshake_buffer);
235 ssl3_free_digest_list(s);
236 OPENSSL_free(s->s3->alpn_selected);
237
238 OPENSSL_cleanse(s->s3, sizeof *s->s3);
239 OPENSSL_free(s->s3);
240 s->s3 = NULL;
241 }
242
243 static int ssl3_set_req_cert_type(CERT *c, const uint8_t *p, size_t len);
244
SSL_session_reused(const SSL * ssl)245 int SSL_session_reused(const SSL *ssl) {
246 return ssl->hit;
247 }
248
SSL_total_renegotiations(const SSL * ssl)249 int SSL_total_renegotiations(const SSL *ssl) {
250 return ssl->s3->total_renegotiations;
251 }
252
SSL_num_renegotiations(const SSL * ssl)253 int SSL_num_renegotiations(const SSL *ssl) {
254 return SSL_total_renegotiations(ssl);
255 }
256
SSL_CTX_need_tmp_RSA(const SSL_CTX * ctx)257 int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx) {
258 return 0;
259 }
260
SSL_need_rsa(const SSL * ssl)261 int SSL_need_rsa(const SSL *ssl) {
262 return 0;
263 }
264
SSL_CTX_set_tmp_rsa(SSL_CTX * ctx,const RSA * rsa)265 int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa) {
266 return 1;
267 }
268
SSL_set_tmp_rsa(SSL * ssl,const RSA * rsa)269 int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa) {
270 return 1;
271 }
272
SSL_CTX_set_tmp_dh(SSL_CTX * ctx,const DH * dh)273 int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh) {
274 DH_free(ctx->cert->dh_tmp);
275 ctx->cert->dh_tmp = DHparams_dup(dh);
276 if (ctx->cert->dh_tmp == NULL) {
277 OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_tmp_dh, ERR_R_DH_LIB);
278 return 0;
279 }
280 return 1;
281 }
282
SSL_set_tmp_dh(SSL * ssl,const DH * dh)283 int SSL_set_tmp_dh(SSL *ssl, const DH *dh) {
284 DH_free(ssl->cert->dh_tmp);
285 ssl->cert->dh_tmp = DHparams_dup(dh);
286 if (ssl->cert->dh_tmp == NULL) {
287 OPENSSL_PUT_ERROR(SSL, SSL_set_tmp_dh, ERR_R_DH_LIB);
288 return 0;
289 }
290 return 1;
291 }
292
SSL_CTX_set_tmp_ecdh(SSL_CTX * ctx,const EC_KEY * ec_key)293 int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key) {
294 if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
295 OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_tmp_ecdh, ERR_R_PASSED_NULL_PARAMETER);
296 return 0;
297 }
298 ctx->cert->ecdh_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
299 return 1;
300 }
301
SSL_set_tmp_ecdh(SSL * ssl,const EC_KEY * ec_key)302 int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key) {
303 if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
304 OPENSSL_PUT_ERROR(SSL, SSL_set_tmp_ecdh, ERR_R_PASSED_NULL_PARAMETER);
305 return 0;
306 }
307 ssl->cert->ecdh_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
308 return 1;
309 }
310
SSL_CTX_enable_tls_channel_id(SSL_CTX * ctx)311 int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx) {
312 ctx->tlsext_channel_id_enabled = 1;
313 return 1;
314 }
315
SSL_enable_tls_channel_id(SSL * ssl)316 int SSL_enable_tls_channel_id(SSL *ssl) {
317 ssl->tlsext_channel_id_enabled = 1;
318 return 1;
319 }
320
SSL_CTX_set1_tls_channel_id(SSL_CTX * ctx,EVP_PKEY * private_key)321 int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx, EVP_PKEY *private_key) {
322 ctx->tlsext_channel_id_enabled = 1;
323 if (EVP_PKEY_id(private_key) != EVP_PKEY_EC ||
324 EVP_PKEY_bits(private_key) != 256) {
325 OPENSSL_PUT_ERROR(SSL, SSL_CTX_set1_tls_channel_id,
326 SSL_R_CHANNEL_ID_NOT_P256);
327 return 0;
328 }
329 EVP_PKEY_free(ctx->tlsext_channel_id_private);
330 ctx->tlsext_channel_id_private = EVP_PKEY_up_ref(private_key);
331 return 1;
332 }
333
SSL_set1_tls_channel_id(SSL * ssl,EVP_PKEY * private_key)334 int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key) {
335 ssl->tlsext_channel_id_enabled = 1;
336 if (EVP_PKEY_id(private_key) != EVP_PKEY_EC ||
337 EVP_PKEY_bits(private_key) != 256) {
338 OPENSSL_PUT_ERROR(SSL, SSL_set1_tls_channel_id, SSL_R_CHANNEL_ID_NOT_P256);
339 return 0;
340 }
341 EVP_PKEY_free(ssl->tlsext_channel_id_private);
342 ssl->tlsext_channel_id_private = EVP_PKEY_up_ref(private_key);
343 return 1;
344 }
345
SSL_get_tls_channel_id(SSL * ssl,uint8_t * out,size_t max_out)346 size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out, size_t max_out) {
347 if (!ssl->s3->tlsext_channel_id_valid) {
348 return 0;
349 }
350 memcpy(out, ssl->s3->tlsext_channel_id, (max_out < 64) ? max_out : 64);
351 return 64;
352 }
353
SSL_set_tlsext_host_name(SSL * ssl,const char * name)354 int SSL_set_tlsext_host_name(SSL *ssl, const char *name) {
355 OPENSSL_free(ssl->tlsext_hostname);
356 ssl->tlsext_hostname = NULL;
357
358 if (name == NULL) {
359 return 1;
360 }
361 if (strlen(name) > TLSEXT_MAXLEN_host_name) {
362 OPENSSL_PUT_ERROR(SSL, SSL_set_tlsext_host_name,
363 SSL_R_SSL3_EXT_INVALID_SERVERNAME);
364 return 0;
365 }
366 ssl->tlsext_hostname = BUF_strdup(name);
367 if (ssl->tlsext_hostname == NULL) {
368 OPENSSL_PUT_ERROR(SSL, SSL_set_tlsext_host_name, ERR_R_MALLOC_FAILURE);
369 return 0;
370 }
371 return 1;
372 }
373
ssl3_ctrl(SSL * s,int cmd,long larg,void * parg)374 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg) {
375 int ret = 0;
376
377 switch (cmd) {
378 case SSL_CTRL_CHAIN:
379 if (larg) {
380 return ssl_cert_set1_chain(s->cert, (STACK_OF(X509) *)parg);
381 } else {
382 return ssl_cert_set0_chain(s->cert, (STACK_OF(X509) *)parg);
383 }
384
385 case SSL_CTRL_CHAIN_CERT:
386 if (larg) {
387 return ssl_cert_add1_chain_cert(s->cert, (X509 *)parg);
388 } else {
389 return ssl_cert_add0_chain_cert(s->cert, (X509 *)parg);
390 }
391
392 case SSL_CTRL_GET_CHAIN_CERTS:
393 *(STACK_OF(X509) **)parg = s->cert->key->chain;
394 ret = 1;
395 break;
396
397 case SSL_CTRL_SELECT_CURRENT_CERT:
398 return ssl_cert_select_current(s->cert, (X509 *)parg);
399
400 case SSL_CTRL_GET_CURVES: {
401 const uint16_t *clist = s->s3->tmp.peer_ellipticcurvelist;
402 size_t clistlen = s->s3->tmp.peer_ellipticcurvelist_length;
403 if (parg) {
404 size_t i;
405 int *cptr = parg;
406 int nid;
407 for (i = 0; i < clistlen; i++) {
408 nid = tls1_ec_curve_id2nid(clist[i]);
409 if (nid != NID_undef) {
410 cptr[i] = nid;
411 } else {
412 cptr[i] = TLSEXT_nid_unknown | clist[i];
413 }
414 }
415 }
416 return (int)clistlen;
417 }
418
419 case SSL_CTRL_SET_CURVES:
420 return tls1_set_curves(&s->tlsext_ellipticcurvelist,
421 &s->tlsext_ellipticcurvelist_length, parg, larg);
422
423 case SSL_CTRL_SET_SIGALGS:
424 return tls1_set_sigalgs(s->cert, parg, larg, 0);
425
426 case SSL_CTRL_SET_CLIENT_SIGALGS:
427 return tls1_set_sigalgs(s->cert, parg, larg, 1);
428
429 case SSL_CTRL_GET_CLIENT_CERT_TYPES: {
430 const uint8_t **pctype = parg;
431 if (s->server || !s->s3->tmp.cert_req) {
432 return 0;
433 }
434 if (pctype) {
435 *pctype = s->s3->tmp.certificate_types;
436 }
437 return (int)s->s3->tmp.num_certificate_types;
438 }
439
440 case SSL_CTRL_SET_CLIENT_CERT_TYPES:
441 if (!s->server) {
442 return 0;
443 }
444 return ssl3_set_req_cert_type(s->cert, parg, larg);
445
446 case SSL_CTRL_BUILD_CERT_CHAIN:
447 return ssl_build_cert_chain(s->cert, s->ctx->cert_store, larg);
448
449 case SSL_CTRL_SET_VERIFY_CERT_STORE:
450 return ssl_cert_set_cert_store(s->cert, parg, 0, larg);
451
452 case SSL_CTRL_SET_CHAIN_CERT_STORE:
453 return ssl_cert_set_cert_store(s->cert, parg, 1, larg);
454
455 case SSL_CTRL_GET_SERVER_TMP_KEY:
456 if (s->server || !s->session || !s->session->sess_cert) {
457 return 0;
458 } else {
459 SESS_CERT *sc;
460 EVP_PKEY *ptmp;
461 int rv = 0;
462 sc = s->session->sess_cert;
463 if (!sc->peer_dh_tmp && !sc->peer_ecdh_tmp) {
464 return 0;
465 }
466 ptmp = EVP_PKEY_new();
467 if (!ptmp) {
468 return 0;
469 }
470 if (sc->peer_dh_tmp) {
471 rv = EVP_PKEY_set1_DH(ptmp, sc->peer_dh_tmp);
472 } else if (sc->peer_ecdh_tmp) {
473 rv = EVP_PKEY_set1_EC_KEY(ptmp, sc->peer_ecdh_tmp);
474 }
475 if (rv) {
476 *(EVP_PKEY **)parg = ptmp;
477 return 1;
478 }
479 EVP_PKEY_free(ptmp);
480 return 0;
481 }
482
483 case SSL_CTRL_GET_EC_POINT_FORMATS: {
484 const uint8_t **pformat = parg;
485 if (!s->s3->tmp.peer_ecpointformatlist) {
486 return 0;
487 }
488 *pformat = s->s3->tmp.peer_ecpointformatlist;
489 return (int)s->s3->tmp.peer_ecpointformatlist_length;
490 }
491
492 default:
493 break;
494 }
495
496 return ret;
497 }
498
ssl3_ctx_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)499 long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) {
500 switch (cmd) {
501 case SSL_CTRL_SET_TLSEXT_TICKET_KEYS:
502 case SSL_CTRL_GET_TLSEXT_TICKET_KEYS: {
503 uint8_t *keys = parg;
504 if (!keys) {
505 return 48;
506 }
507 if (larg != 48) {
508 OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, SSL_R_INVALID_TICKET_KEYS_LENGTH);
509 return 0;
510 }
511 if (cmd == SSL_CTRL_SET_TLSEXT_TICKET_KEYS) {
512 memcpy(ctx->tlsext_tick_key_name, keys, 16);
513 memcpy(ctx->tlsext_tick_hmac_key, keys + 16, 16);
514 memcpy(ctx->tlsext_tick_aes_key, keys + 32, 16);
515 } else {
516 memcpy(keys, ctx->tlsext_tick_key_name, 16);
517 memcpy(keys + 16, ctx->tlsext_tick_hmac_key, 16);
518 memcpy(keys + 32, ctx->tlsext_tick_aes_key, 16);
519 }
520 return 1;
521 }
522
523 case SSL_CTRL_SET_CURVES:
524 return tls1_set_curves(&ctx->tlsext_ellipticcurvelist,
525 &ctx->tlsext_ellipticcurvelist_length, parg, larg);
526
527 case SSL_CTRL_SET_SIGALGS:
528 return tls1_set_sigalgs(ctx->cert, parg, larg, 0);
529
530 case SSL_CTRL_SET_CLIENT_SIGALGS:
531 return tls1_set_sigalgs(ctx->cert, parg, larg, 1);
532
533 case SSL_CTRL_SET_CLIENT_CERT_TYPES:
534 return ssl3_set_req_cert_type(ctx->cert, parg, larg);
535
536 case SSL_CTRL_BUILD_CERT_CHAIN:
537 return ssl_build_cert_chain(ctx->cert, ctx->cert_store, larg);
538
539 case SSL_CTRL_SET_VERIFY_CERT_STORE:
540 return ssl_cert_set_cert_store(ctx->cert, parg, 0, larg);
541
542 case SSL_CTRL_SET_CHAIN_CERT_STORE:
543 return ssl_cert_set_cert_store(ctx->cert, parg, 1, larg);
544
545 case SSL_CTRL_EXTRA_CHAIN_CERT:
546 if (ctx->extra_certs == NULL) {
547 ctx->extra_certs = sk_X509_new_null();
548 if (ctx->extra_certs == NULL) {
549 return 0;
550 }
551 }
552 sk_X509_push(ctx->extra_certs, (X509 *)parg);
553 break;
554
555 case SSL_CTRL_GET_EXTRA_CHAIN_CERTS:
556 if (ctx->extra_certs == NULL && larg == 0) {
557 *(STACK_OF(X509) **)parg = ctx->cert->key->chain;
558 } else {
559 *(STACK_OF(X509) **)parg = ctx->extra_certs;
560 }
561 break;
562
563 case SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS:
564 sk_X509_pop_free(ctx->extra_certs, X509_free);
565 ctx->extra_certs = NULL;
566 break;
567
568 case SSL_CTRL_CHAIN:
569 if (larg) {
570 return ssl_cert_set1_chain(ctx->cert, (STACK_OF(X509) *)parg);
571 } else {
572 return ssl_cert_set0_chain(ctx->cert, (STACK_OF(X509) *)parg);
573 }
574
575 case SSL_CTRL_CHAIN_CERT:
576 if (larg) {
577 return ssl_cert_add1_chain_cert(ctx->cert, (X509 *)parg);
578 } else {
579 return ssl_cert_add0_chain_cert(ctx->cert, (X509 *)parg);
580 }
581
582 case SSL_CTRL_GET_CHAIN_CERTS:
583 *(STACK_OF(X509) **)parg = ctx->cert->key->chain;
584 break;
585
586 case SSL_CTRL_SELECT_CURRENT_CERT:
587 return ssl_cert_select_current(ctx->cert, (X509 *)parg);
588
589 default:
590 return 0;
591 }
592
593 return 1;
594 }
595
SSL_CTX_set_tlsext_servername_callback(SSL_CTX * ctx,int (* callback)(SSL * ssl,int * out_alert,void * arg))596 int SSL_CTX_set_tlsext_servername_callback(
597 SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg)) {
598 ctx->tlsext_servername_callback = callback;
599 return 1;
600 }
601
SSL_CTX_set_tlsext_servername_arg(SSL_CTX * ctx,void * arg)602 int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg) {
603 ctx->tlsext_servername_arg = arg;
604 return 1;
605 }
606
SSL_CTX_set_tlsext_ticket_key_cb(SSL_CTX * ctx,int (* callback)(SSL * ssl,uint8_t * key_name,uint8_t * iv,EVP_CIPHER_CTX * ctx,HMAC_CTX * hmac_ctx,int encrypt))607 int SSL_CTX_set_tlsext_ticket_key_cb(
608 SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
609 EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
610 int encrypt)) {
611 ctx->tlsext_ticket_key_cb = callback;
612 return 1;
613 }
614
ssl_get_cipher_preferences(SSL * s)615 struct ssl_cipher_preference_list_st *ssl_get_cipher_preferences(SSL *s) {
616 if (s->cipher_list != NULL) {
617 return s->cipher_list;
618 }
619
620 if (s->version >= TLS1_1_VERSION && s->ctx != NULL &&
621 s->ctx->cipher_list_tls11 != NULL) {
622 return s->ctx->cipher_list_tls11;
623 }
624
625 if (s->ctx != NULL && s->ctx->cipher_list != NULL) {
626 return s->ctx->cipher_list;
627 }
628
629 return NULL;
630 }
631
ssl3_choose_cipher(SSL * s,STACK_OF (SSL_CIPHER)* clnt,struct ssl_cipher_preference_list_st * server_pref)632 const SSL_CIPHER *ssl3_choose_cipher(
633 SSL *s, STACK_OF(SSL_CIPHER) *clnt,
634 struct ssl_cipher_preference_list_st *server_pref) {
635 const SSL_CIPHER *c, *ret = NULL;
636 STACK_OF(SSL_CIPHER) *srvr = server_pref->ciphers, *prio, *allow;
637 size_t i;
638 int ok;
639 size_t cipher_index;
640 uint32_t alg_k, alg_a, mask_k, mask_a;
641 /* in_group_flags will either be NULL, or will point to an array of bytes
642 * which indicate equal-preference groups in the |prio| stack. See the
643 * comment about |in_group_flags| in the |ssl_cipher_preference_list_st|
644 * struct. */
645 const uint8_t *in_group_flags;
646 /* group_min contains the minimal index so far found in a group, or -1 if no
647 * such value exists yet. */
648 int group_min = -1;
649
650 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) {
651 prio = srvr;
652 in_group_flags = server_pref->in_group_flags;
653 allow = clnt;
654 } else {
655 prio = clnt;
656 in_group_flags = NULL;
657 allow = srvr;
658 }
659
660 ssl_get_compatible_server_ciphers(s, &mask_k, &mask_a);
661
662 for (i = 0; i < sk_SSL_CIPHER_num(prio); i++) {
663 c = sk_SSL_CIPHER_value(prio, i);
664
665 ok = 1;
666
667 /* Skip TLS v1.2 only ciphersuites if not supported */
668 if ((c->algorithm_ssl & SSL_TLSV1_2) && !SSL_USE_TLS1_2_CIPHERS(s)) {
669 ok = 0;
670 }
671
672 alg_k = c->algorithm_mkey;
673 alg_a = c->algorithm_auth;
674
675 ok = ok && (alg_k & mask_k) && (alg_a & mask_a);
676
677 if (ok && sk_SSL_CIPHER_find(allow, &cipher_index, c)) {
678 if (in_group_flags != NULL && in_group_flags[i] == 1) {
679 /* This element of |prio| is in a group. Update the minimum index found
680 * so far and continue looking. */
681 if (group_min == -1 || (size_t)group_min > cipher_index) {
682 group_min = cipher_index;
683 }
684 } else {
685 if (group_min != -1 && (size_t)group_min < cipher_index) {
686 cipher_index = group_min;
687 }
688 ret = sk_SSL_CIPHER_value(allow, cipher_index);
689 break;
690 }
691 }
692
693 if (in_group_flags != NULL && in_group_flags[i] == 0 && group_min != -1) {
694 /* We are about to leave a group, but we found a match in it, so that's
695 * our answer. */
696 ret = sk_SSL_CIPHER_value(allow, group_min);
697 break;
698 }
699 }
700
701 return ret;
702 }
703
ssl3_get_req_cert_type(SSL * s,uint8_t * p)704 int ssl3_get_req_cert_type(SSL *s, uint8_t *p) {
705 int ret = 0;
706 const uint8_t *sig;
707 size_t i, siglen;
708 int have_rsa_sign = 0;
709 int have_ecdsa_sign = 0;
710
711 /* If we have custom certificate types set, use them */
712 if (s->cert->client_certificate_types) {
713 memcpy(p, s->cert->client_certificate_types,
714 s->cert->num_client_certificate_types);
715 return s->cert->num_client_certificate_types;
716 }
717
718 /* get configured sigalgs */
719 siglen = tls12_get_psigalgs(s, &sig);
720 for (i = 0; i < siglen; i += 2, sig += 2) {
721 switch (sig[1]) {
722 case TLSEXT_signature_rsa:
723 have_rsa_sign = 1;
724 break;
725
726 case TLSEXT_signature_ecdsa:
727 have_ecdsa_sign = 1;
728 break;
729 }
730 }
731
732 if (have_rsa_sign) {
733 p[ret++] = SSL3_CT_RSA_SIGN;
734 }
735
736 /* ECDSA certs can be used with RSA cipher suites as well so we don't need to
737 * check for SSL_kECDH or SSL_kECDHE. */
738 if (s->version >= TLS1_VERSION && have_ecdsa_sign) {
739 p[ret++] = TLS_CT_ECDSA_SIGN;
740 }
741
742 return ret;
743 }
744
ssl3_set_req_cert_type(CERT * c,const uint8_t * p,size_t len)745 static int ssl3_set_req_cert_type(CERT *c, const uint8_t *p, size_t len) {
746 OPENSSL_free(c->client_certificate_types);
747 c->client_certificate_types = NULL;
748 c->num_client_certificate_types = 0;
749
750 if (!p || !len) {
751 return 1;
752 }
753
754 if (len > 0xff) {
755 return 0;
756 }
757
758 c->client_certificate_types = BUF_memdup(p, len);
759 if (!c->client_certificate_types) {
760 return 0;
761 }
762
763 c->num_client_certificate_types = len;
764 return 1;
765 }
766
767 /* If we are using default SHA1+MD5 algorithms switch to new SHA256 PRF and
768 * handshake macs if required. */
ssl_get_algorithm2(SSL * s)769 uint32_t ssl_get_algorithm2(SSL *s) {
770 static const uint32_t kMask = SSL_HANDSHAKE_MAC_DEFAULT;
771 uint32_t alg2 = s->s3->tmp.new_cipher->algorithm2;
772 if (s->enc_method->enc_flags & SSL_ENC_FLAG_SHA256_PRF &&
773 (alg2 & kMask) == kMask) {
774 return SSL_HANDSHAKE_MAC_SHA256;
775 }
776 return alg2;
777 }
778