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 * ECC cipher suite support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
114 */
115 /* ====================================================================
116 * Copyright 2005 Nokia. All rights reserved.
117 *
118 * The portions of the attached software ("Contribution") is developed by
119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
120 * license.
121 *
122 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
123 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
124 * support (see RFC 4279) to OpenSSL.
125 *
126 * No patent licenses or other rights except those expressly stated in
127 * the OpenSSL open source license shall be deemed granted or received
128 * expressly, by implication, estoppel, or otherwise.
129 *
130 * No assurances are provided by Nokia that the Contribution does not
131 * infringe the patent or other intellectual property rights of any third
132 * party or that the license provides you with all the necessary rights
133 * to make use of the Contribution.
134 *
135 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
136 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
137 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
138 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
139 * OTHERWISE. */
140
141 #include <assert.h>
142 #include <stdio.h>
143 #include <string.h>
144
145 #include <openssl/bytestring.h>
146 #include <openssl/dh.h>
147 #include <openssl/err.h>
148 #include <openssl/lhash.h>
149 #include <openssl/mem.h>
150 #include <openssl/obj.h>
151 #include <openssl/rand.h>
152 #include <openssl/x509v3.h>
153
154 #include "internal.h"
155 #include "../crypto/internal.h"
156
157
158 /* Some error codes are special. Ensure the make_errors.go script never
159 * regresses this. */
160 OPENSSL_COMPILE_ASSERT(SSL_R_TLSV1_ALERT_NO_RENEGOTIATION ==
161 SSL_AD_NO_RENEGOTIATION + SSL_AD_REASON_OFFSET,
162 ssl_alert_reason_code_mismatch);
163
164 /* kMaxHandshakeSize is the maximum size, in bytes, of a handshake message. */
165 static const size_t kMaxHandshakeSize = (1u << 24) - 1;
166
167 static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl = CRYPTO_EX_DATA_CLASS_INIT;
168 static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl_ctx = CRYPTO_EX_DATA_CLASS_INIT;
169
SSL_clear(SSL * ssl)170 int SSL_clear(SSL *ssl) {
171 if (ssl->method == NULL) {
172 OPENSSL_PUT_ERROR(SSL, SSL_clear, SSL_R_NO_METHOD_SPECIFIED);
173 return 0;
174 }
175
176 if (ssl_clear_bad_session(ssl)) {
177 SSL_SESSION_free(ssl->session);
178 ssl->session = NULL;
179 }
180
181 ssl->hit = 0;
182 ssl->shutdown = 0;
183
184 /* SSL_clear may be called before or after the |ssl| is initialized in either
185 * accept or connect state. In the latter case, SSL_clear should preserve the
186 * half and reset |ssl->state| accordingly. */
187 if (ssl->handshake_func != NULL) {
188 if (ssl->server) {
189 SSL_set_accept_state(ssl);
190 } else {
191 SSL_set_connect_state(ssl);
192 }
193 } else {
194 assert(ssl->state == 0);
195 }
196
197 /* TODO(davidben): Some state on |ssl| is reset both in |SSL_new| and
198 * |SSL_clear| because it is per-connection state rather than configuration
199 * state. Per-connection state should be on |ssl->s3| and |ssl->d1| so it is
200 * naturally reset at the right points between |SSL_new|, |SSL_clear|, and
201 * |ssl3_new|. */
202
203 ssl->rwstate = SSL_NOTHING;
204 ssl->rstate = SSL_ST_READ_HEADER;
205
206 BUF_MEM_free(ssl->init_buf);
207 ssl->init_buf = NULL;
208
209 ssl->packet = NULL;
210 ssl->packet_length = 0;
211
212 ssl_clear_cipher_ctx(ssl);
213
214 OPENSSL_free(ssl->next_proto_negotiated);
215 ssl->next_proto_negotiated = NULL;
216 ssl->next_proto_negotiated_len = 0;
217
218 /* The ssl->d1->mtu is simultaneously configuration (preserved across
219 * clear) and connection-specific state (gets reset).
220 *
221 * TODO(davidben): Avoid this. */
222 unsigned mtu = 0;
223 if (ssl->d1 != NULL) {
224 mtu = ssl->d1->mtu;
225 }
226
227 ssl->method->ssl_free(ssl);
228 if (!ssl->method->ssl_new(ssl)) {
229 return 0;
230 }
231 ssl->enc_method = ssl3_get_enc_method(ssl->version);
232 assert(ssl->enc_method != NULL);
233
234 if (SSL_IS_DTLS(ssl) && (SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
235 ssl->d1->mtu = mtu;
236 }
237
238 ssl->client_version = ssl->version;
239
240 return 1;
241 }
242
SSL_new(SSL_CTX * ctx)243 SSL *SSL_new(SSL_CTX *ctx) {
244 SSL *s;
245
246 if (ctx == NULL) {
247 OPENSSL_PUT_ERROR(SSL, SSL_new, SSL_R_NULL_SSL_CTX);
248 return NULL;
249 }
250 if (ctx->method == NULL) {
251 OPENSSL_PUT_ERROR(SSL, SSL_new, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
252 return NULL;
253 }
254
255 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
256 if (s == NULL) {
257 goto err;
258 }
259 memset(s, 0, sizeof(SSL));
260
261 s->min_version = ctx->min_version;
262 s->max_version = ctx->max_version;
263
264 s->options = ctx->options;
265 s->mode = ctx->mode;
266 s->max_cert_list = ctx->max_cert_list;
267
268 s->cert = ssl_cert_dup(ctx->cert);
269 if (s->cert == NULL) {
270 goto err;
271 }
272
273 s->msg_callback = ctx->msg_callback;
274 s->msg_callback_arg = ctx->msg_callback_arg;
275 s->verify_mode = ctx->verify_mode;
276 s->sid_ctx_length = ctx->sid_ctx_length;
277 assert(s->sid_ctx_length <= sizeof s->sid_ctx);
278 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
279 s->verify_callback = ctx->default_verify_callback;
280 s->generate_session_id = ctx->generate_session_id;
281
282 s->param = X509_VERIFY_PARAM_new();
283 if (!s->param) {
284 goto err;
285 }
286 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
287 s->quiet_shutdown = ctx->quiet_shutdown;
288 s->max_send_fragment = ctx->max_send_fragment;
289
290 CRYPTO_refcount_inc(&ctx->references);
291 s->ctx = ctx;
292 s->tlsext_ticket_expected = 0;
293 CRYPTO_refcount_inc(&ctx->references);
294 s->initial_ctx = ctx;
295 if (ctx->tlsext_ecpointformatlist) {
296 s->tlsext_ecpointformatlist = BUF_memdup(
297 ctx->tlsext_ecpointformatlist, ctx->tlsext_ecpointformatlist_length);
298 if (!s->tlsext_ecpointformatlist) {
299 goto err;
300 }
301 s->tlsext_ecpointformatlist_length = ctx->tlsext_ecpointformatlist_length;
302 }
303
304 if (ctx->tlsext_ellipticcurvelist) {
305 s->tlsext_ellipticcurvelist =
306 BUF_memdup(ctx->tlsext_ellipticcurvelist,
307 ctx->tlsext_ellipticcurvelist_length * 2);
308 if (!s->tlsext_ellipticcurvelist) {
309 goto err;
310 }
311 s->tlsext_ellipticcurvelist_length = ctx->tlsext_ellipticcurvelist_length;
312 }
313 s->next_proto_negotiated = NULL;
314
315 if (s->ctx->alpn_client_proto_list) {
316 s->alpn_client_proto_list = BUF_memdup(s->ctx->alpn_client_proto_list,
317 s->ctx->alpn_client_proto_list_len);
318 if (s->alpn_client_proto_list == NULL) {
319 goto err;
320 }
321 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
322 }
323
324 s->verify_result = X509_V_OK;
325 s->method = ctx->method;
326
327 if (!s->method->ssl_new(s)) {
328 goto err;
329 }
330 s->enc_method = ssl3_get_enc_method(s->version);
331 assert(s->enc_method != NULL);
332
333 s->rwstate = SSL_NOTHING;
334 s->rstate = SSL_ST_READ_HEADER;
335
336 CRYPTO_new_ex_data(&g_ex_data_class_ssl, s, &s->ex_data);
337
338 s->psk_identity_hint = NULL;
339 if (ctx->psk_identity_hint) {
340 s->psk_identity_hint = BUF_strdup(ctx->psk_identity_hint);
341 if (s->psk_identity_hint == NULL) {
342 goto err;
343 }
344 }
345 s->psk_client_callback = ctx->psk_client_callback;
346 s->psk_server_callback = ctx->psk_server_callback;
347
348 s->tlsext_channel_id_enabled = ctx->tlsext_channel_id_enabled;
349 if (ctx->tlsext_channel_id_private) {
350 s->tlsext_channel_id_private =
351 EVP_PKEY_up_ref(ctx->tlsext_channel_id_private);
352 }
353
354 s->signed_cert_timestamps_enabled = s->ctx->signed_cert_timestamps_enabled;
355 s->ocsp_stapling_enabled = s->ctx->ocsp_stapling_enabled;
356
357 return s;
358
359 err:
360 SSL_free(s);
361 OPENSSL_PUT_ERROR(SSL, SSL_new, ERR_R_MALLOC_FAILURE);
362
363 return NULL;
364 }
365
SSL_CTX_set_session_id_context(SSL_CTX * ctx,const uint8_t * sid_ctx,unsigned int sid_ctx_len)366 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const uint8_t *sid_ctx,
367 unsigned int sid_ctx_len) {
368 if (sid_ctx_len > sizeof ctx->sid_ctx) {
369 OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_session_id_context,
370 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
371 return 0;
372 }
373 ctx->sid_ctx_length = sid_ctx_len;
374 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
375
376 return 1;
377 }
378
SSL_set_session_id_context(SSL * ssl,const uint8_t * sid_ctx,unsigned int sid_ctx_len)379 int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
380 unsigned int sid_ctx_len) {
381 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
382 OPENSSL_PUT_ERROR(SSL, SSL_set_session_id_context,
383 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
384 return 0;
385 }
386 ssl->sid_ctx_length = sid_ctx_len;
387 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
388
389 return 1;
390 }
391
SSL_CTX_set_generate_session_id(SSL_CTX * ctx,GEN_SESSION_CB cb)392 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) {
393 ctx->generate_session_id = cb;
394 return 1;
395 }
396
SSL_set_generate_session_id(SSL * ssl,GEN_SESSION_CB cb)397 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) {
398 ssl->generate_session_id = cb;
399 return 1;
400 }
401
SSL_has_matching_session_id(const SSL * ssl,const uint8_t * id,unsigned int id_len)402 int SSL_has_matching_session_id(const SSL *ssl, const uint8_t *id,
403 unsigned int id_len) {
404 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how we
405 * can "construct" a session to give us the desired check - ie. to find if
406 * there's a session in the hash table that would conflict with any new
407 * session built out of this id/id_len and the ssl_version in use by this
408 * SSL. */
409 SSL_SESSION r, *p;
410
411 if (id_len > sizeof r.session_id) {
412 return 0;
413 }
414
415 r.ssl_version = ssl->version;
416 r.session_id_length = id_len;
417 memcpy(r.session_id, id, id_len);
418
419 CRYPTO_MUTEX_lock_read(&ssl->ctx->lock);
420 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
421 CRYPTO_MUTEX_unlock(&ssl->ctx->lock);
422 return p != NULL;
423 }
424
SSL_CTX_set_purpose(SSL_CTX * s,int purpose)425 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) {
426 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
427 }
428
SSL_set_purpose(SSL * s,int purpose)429 int SSL_set_purpose(SSL *s, int purpose) {
430 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
431 }
432
SSL_CTX_set_trust(SSL_CTX * s,int trust)433 int SSL_CTX_set_trust(SSL_CTX *s, int trust) {
434 return X509_VERIFY_PARAM_set_trust(s->param, trust);
435 }
436
SSL_set_trust(SSL * s,int trust)437 int SSL_set_trust(SSL *s, int trust) {
438 return X509_VERIFY_PARAM_set_trust(s->param, trust);
439 }
440
SSL_CTX_set1_param(SSL_CTX * ctx,X509_VERIFY_PARAM * vpm)441 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) {
442 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
443 }
444
SSL_set1_param(SSL * ssl,X509_VERIFY_PARAM * vpm)445 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) {
446 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
447 }
448
ssl_cipher_preference_list_free(struct ssl_cipher_preference_list_st * cipher_list)449 void ssl_cipher_preference_list_free(
450 struct ssl_cipher_preference_list_st *cipher_list) {
451 if (cipher_list == NULL) {
452 return;
453 }
454 sk_SSL_CIPHER_free(cipher_list->ciphers);
455 OPENSSL_free(cipher_list->in_group_flags);
456 OPENSSL_free(cipher_list);
457 }
458
ssl_cipher_preference_list_dup(struct ssl_cipher_preference_list_st * cipher_list)459 struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_dup(
460 struct ssl_cipher_preference_list_st *cipher_list) {
461 struct ssl_cipher_preference_list_st *ret = NULL;
462 size_t n = sk_SSL_CIPHER_num(cipher_list->ciphers);
463
464 ret = OPENSSL_malloc(sizeof(struct ssl_cipher_preference_list_st));
465 if (!ret) {
466 goto err;
467 }
468
469 ret->ciphers = NULL;
470 ret->in_group_flags = NULL;
471 ret->ciphers = sk_SSL_CIPHER_dup(cipher_list->ciphers);
472 if (!ret->ciphers) {
473 goto err;
474 }
475 ret->in_group_flags = BUF_memdup(cipher_list->in_group_flags, n);
476 if (!ret->in_group_flags) {
477 goto err;
478 }
479
480 return ret;
481
482 err:
483 ssl_cipher_preference_list_free(ret);
484 return NULL;
485 }
486
ssl_cipher_preference_list_from_ciphers(STACK_OF (SSL_CIPHER)* ciphers)487 struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_from_ciphers(
488 STACK_OF(SSL_CIPHER) *ciphers) {
489 struct ssl_cipher_preference_list_st *ret = NULL;
490 size_t n = sk_SSL_CIPHER_num(ciphers);
491
492 ret = OPENSSL_malloc(sizeof(struct ssl_cipher_preference_list_st));
493 if (!ret) {
494 goto err;
495 }
496 ret->ciphers = NULL;
497 ret->in_group_flags = NULL;
498 ret->ciphers = sk_SSL_CIPHER_dup(ciphers);
499 if (!ret->ciphers) {
500 goto err;
501 }
502 ret->in_group_flags = OPENSSL_malloc(n);
503 if (!ret->in_group_flags) {
504 goto err;
505 }
506 memset(ret->in_group_flags, 0, n);
507 return ret;
508
509 err:
510 ssl_cipher_preference_list_free(ret);
511 return NULL;
512 }
513
SSL_CTX_get0_param(SSL_CTX * ctx)514 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) { return ctx->param; }
515
SSL_get0_param(SSL * ssl)516 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) { return ssl->param; }
517
SSL_certs_clear(SSL * s)518 void SSL_certs_clear(SSL *s) { ssl_cert_clear_certs(s->cert); }
519
SSL_free(SSL * ssl)520 void SSL_free(SSL *ssl) {
521 if (ssl == NULL) {
522 return;
523 }
524
525 X509_VERIFY_PARAM_free(ssl->param);
526
527 CRYPTO_free_ex_data(&g_ex_data_class_ssl, ssl, &ssl->ex_data);
528
529 if (ssl->bbio != NULL) {
530 /* If the buffering BIO is in place, pop it off */
531 if (ssl->bbio == ssl->wbio) {
532 ssl->wbio = BIO_pop(ssl->wbio);
533 }
534 BIO_free(ssl->bbio);
535 ssl->bbio = NULL;
536 }
537
538 int free_wbio = ssl->wbio != ssl->rbio;
539 BIO_free_all(ssl->rbio);
540 if (free_wbio) {
541 BIO_free_all(ssl->wbio);
542 }
543
544 BUF_MEM_free(ssl->init_buf);
545
546 /* add extra stuff */
547 ssl_cipher_preference_list_free(ssl->cipher_list);
548 sk_SSL_CIPHER_free(ssl->cipher_list_by_id);
549
550 ssl_clear_bad_session(ssl);
551 SSL_SESSION_free(ssl->session);
552
553 ssl_clear_cipher_ctx(ssl);
554
555 ssl_cert_free(ssl->cert);
556
557 OPENSSL_free(ssl->tlsext_hostname);
558 SSL_CTX_free(ssl->initial_ctx);
559 OPENSSL_free(ssl->tlsext_ecpointformatlist);
560 OPENSSL_free(ssl->tlsext_ellipticcurvelist);
561 OPENSSL_free(ssl->alpn_client_proto_list);
562 EVP_PKEY_free(ssl->tlsext_channel_id_private);
563 OPENSSL_free(ssl->psk_identity_hint);
564 sk_X509_NAME_pop_free(ssl->client_CA, X509_NAME_free);
565 OPENSSL_free(ssl->next_proto_negotiated);
566 sk_SRTP_PROTECTION_PROFILE_free(ssl->srtp_profiles);
567
568 if (ssl->method != NULL) {
569 ssl->method->ssl_free(ssl);
570 }
571 SSL_CTX_free(ssl->ctx);
572
573 OPENSSL_free(ssl);
574 }
575
SSL_set_bio(SSL * s,BIO * rbio,BIO * wbio)576 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) {
577 /* If the output buffering BIO is still in place, remove it. */
578 if (s->bbio != NULL) {
579 if (s->wbio == s->bbio) {
580 s->wbio = s->wbio->next_bio;
581 s->bbio->next_bio = NULL;
582 }
583 }
584
585 if (s->rbio != rbio) {
586 BIO_free_all(s->rbio);
587 }
588 if (s->wbio != wbio && s->rbio != s->wbio) {
589 BIO_free_all(s->wbio);
590 }
591 s->rbio = rbio;
592 s->wbio = wbio;
593 }
594
SSL_get_rbio(const SSL * s)595 BIO *SSL_get_rbio(const SSL *s) { return s->rbio; }
596
SSL_get_wbio(const SSL * s)597 BIO *SSL_get_wbio(const SSL *s) { return s->wbio; }
598
SSL_get_fd(const SSL * s)599 int SSL_get_fd(const SSL *s) { return SSL_get_rfd(s); }
600
SSL_get_rfd(const SSL * s)601 int SSL_get_rfd(const SSL *s) {
602 int ret = -1;
603 BIO *b, *r;
604
605 b = SSL_get_rbio(s);
606 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
607 if (r != NULL) {
608 BIO_get_fd(r, &ret);
609 }
610 return ret;
611 }
612
SSL_get_wfd(const SSL * s)613 int SSL_get_wfd(const SSL *s) {
614 int ret = -1;
615 BIO *b, *r;
616
617 b = SSL_get_wbio(s);
618 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
619 if (r != NULL) {
620 BIO_get_fd(r, &ret);
621 }
622
623 return ret;
624 }
625
SSL_set_fd(SSL * s,int fd)626 int SSL_set_fd(SSL *s, int fd) {
627 int ret = 0;
628 BIO *bio = NULL;
629
630 bio = BIO_new(BIO_s_fd());
631
632 if (bio == NULL) {
633 OPENSSL_PUT_ERROR(SSL, SSL_set_fd, ERR_R_BUF_LIB);
634 goto err;
635 }
636 BIO_set_fd(bio, fd, BIO_NOCLOSE);
637 SSL_set_bio(s, bio, bio);
638 ret = 1;
639
640 err:
641 return ret;
642 }
643
SSL_set_wfd(SSL * s,int fd)644 int SSL_set_wfd(SSL *s, int fd) {
645 int ret = 0;
646 BIO *bio = NULL;
647
648 if (s->rbio == NULL || BIO_method_type(s->rbio) != BIO_TYPE_FD ||
649 (int)BIO_get_fd(s->rbio, NULL) != fd) {
650 bio = BIO_new(BIO_s_fd());
651
652 if (bio == NULL) {
653 OPENSSL_PUT_ERROR(SSL, SSL_set_wfd, ERR_R_BUF_LIB);
654 goto err;
655 }
656 BIO_set_fd(bio, fd, BIO_NOCLOSE);
657 SSL_set_bio(s, SSL_get_rbio(s), bio);
658 } else {
659 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
660 }
661
662 ret = 1;
663
664 err:
665 return ret;
666 }
667
SSL_set_rfd(SSL * s,int fd)668 int SSL_set_rfd(SSL *s, int fd) {
669 int ret = 0;
670 BIO *bio = NULL;
671
672 if (s->wbio == NULL || BIO_method_type(s->wbio) != BIO_TYPE_FD ||
673 (int)BIO_get_fd(s->wbio, NULL) != fd) {
674 bio = BIO_new(BIO_s_fd());
675
676 if (bio == NULL) {
677 OPENSSL_PUT_ERROR(SSL, SSL_set_rfd, ERR_R_BUF_LIB);
678 goto err;
679 }
680 BIO_set_fd(bio, fd, BIO_NOCLOSE);
681 SSL_set_bio(s, bio, SSL_get_wbio(s));
682 } else {
683 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
684 }
685 ret = 1;
686
687 err:
688 return ret;
689 }
690
691 /* return length of latest Finished message we sent, copy to 'buf' */
SSL_get_finished(const SSL * s,void * buf,size_t count)692 size_t SSL_get_finished(const SSL *s, void *buf, size_t count) {
693 size_t ret = 0;
694
695 if (s->s3 != NULL) {
696 ret = s->s3->tmp.finish_md_len;
697 if (count > ret) {
698 count = ret;
699 }
700 memcpy(buf, s->s3->tmp.finish_md, count);
701 }
702
703 return ret;
704 }
705
706 /* return length of latest Finished message we expected, copy to 'buf' */
SSL_get_peer_finished(const SSL * s,void * buf,size_t count)707 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) {
708 size_t ret = 0;
709
710 if (s->s3 != NULL) {
711 ret = s->s3->tmp.peer_finish_md_len;
712 if (count > ret) {
713 count = ret;
714 }
715 memcpy(buf, s->s3->tmp.peer_finish_md, count);
716 }
717
718 return ret;
719 }
720
SSL_get_verify_mode(const SSL * s)721 int SSL_get_verify_mode(const SSL *s) { return s->verify_mode; }
722
SSL_get_verify_depth(const SSL * s)723 int SSL_get_verify_depth(const SSL *s) {
724 return X509_VERIFY_PARAM_get_depth(s->param);
725 }
726
SSL_get_verify_callback(const SSL * s)727 int (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) {
728 return s->verify_callback;
729 }
730
SSL_CTX_get_verify_mode(const SSL_CTX * ctx)731 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) { return ctx->verify_mode; }
732
SSL_CTX_get_verify_depth(const SSL_CTX * ctx)733 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) {
734 return X509_VERIFY_PARAM_get_depth(ctx->param);
735 }
736
SSL_CTX_get_verify_callback(const SSL_CTX * ctx)737 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) {
738 return ctx->default_verify_callback;
739 }
740
SSL_set_verify(SSL * s,int mode,int (* callback)(int ok,X509_STORE_CTX * ctx))741 void SSL_set_verify(SSL *s, int mode,
742 int (*callback)(int ok, X509_STORE_CTX *ctx)) {
743 s->verify_mode = mode;
744 if (callback != NULL) {
745 s->verify_callback = callback;
746 }
747 }
748
SSL_set_verify_depth(SSL * s,int depth)749 void SSL_set_verify_depth(SSL *s, int depth) {
750 X509_VERIFY_PARAM_set_depth(s->param, depth);
751 }
752
SSL_CTX_get_read_ahead(const SSL_CTX * ctx)753 int SSL_CTX_get_read_ahead(const SSL_CTX *ctx) { return 0; }
754
SSL_get_read_ahead(const SSL * s)755 int SSL_get_read_ahead(const SSL *s) { return 0; }
756
SSL_CTX_set_read_ahead(SSL_CTX * ctx,int yes)757 void SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes) { }
758
SSL_set_read_ahead(SSL * s,int yes)759 void SSL_set_read_ahead(SSL *s, int yes) { }
760
SSL_pending(const SSL * s)761 int SSL_pending(const SSL *s) {
762 if (s->rstate == SSL_ST_READ_BODY) {
763 return 0;
764 }
765
766 return (s->s3->rrec.type == SSL3_RT_APPLICATION_DATA) ? s->s3->rrec.length
767 : 0;
768 }
769
SSL_get_peer_certificate(const SSL * s)770 X509 *SSL_get_peer_certificate(const SSL *s) {
771 X509 *r;
772
773 if (s == NULL || s->session == NULL) {
774 r = NULL;
775 } else {
776 r = s->session->peer;
777 }
778
779 if (r == NULL) {
780 return NULL;
781 }
782
783 return X509_up_ref(r);
784 }
785
STACK_OF(X509)786 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) {
787 STACK_OF(X509) *r;
788
789 if (s == NULL || s->session == NULL || s->session->sess_cert == NULL) {
790 r = NULL;
791 } else {
792 r = s->session->sess_cert->cert_chain;
793 }
794
795 /* If we are a client, cert_chain includes the peer's own certificate; if we
796 * are a server, it does not. */
797 return r;
798 }
799
800 /* Fix this so it checks all the valid key/cert options */
SSL_CTX_check_private_key(const SSL_CTX * ctx)801 int SSL_CTX_check_private_key(const SSL_CTX *ctx) {
802 if (ctx == NULL || ctx->cert == NULL || ctx->cert->key->x509 == NULL) {
803 OPENSSL_PUT_ERROR(SSL, SSL_CTX_check_private_key,
804 SSL_R_NO_CERTIFICATE_ASSIGNED);
805 return 0;
806 }
807
808 if (ctx->cert->key->privatekey == NULL) {
809 OPENSSL_PUT_ERROR(SSL, SSL_CTX_check_private_key,
810 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
811 return 0;
812 }
813
814 return X509_check_private_key(ctx->cert->key->x509,
815 ctx->cert->key->privatekey);
816 }
817
818 /* Fix this function so that it takes an optional type parameter */
SSL_check_private_key(const SSL * ssl)819 int SSL_check_private_key(const SSL *ssl) {
820 if (ssl == NULL) {
821 OPENSSL_PUT_ERROR(SSL, SSL_check_private_key, ERR_R_PASSED_NULL_PARAMETER);
822 return 0;
823 }
824
825 if (ssl->cert == NULL) {
826 OPENSSL_PUT_ERROR(SSL, SSL_check_private_key,
827 SSL_R_NO_CERTIFICATE_ASSIGNED);
828 return 0;
829 }
830
831 if (ssl->cert->key->x509 == NULL) {
832 OPENSSL_PUT_ERROR(SSL, SSL_check_private_key,
833 SSL_R_NO_CERTIFICATE_ASSIGNED);
834 return 0;
835 }
836
837 if (ssl->cert->key->privatekey == NULL) {
838 OPENSSL_PUT_ERROR(SSL, SSL_check_private_key,
839 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
840 return 0;
841 }
842
843 return X509_check_private_key(ssl->cert->key->x509,
844 ssl->cert->key->privatekey);
845 }
846
SSL_accept(SSL * s)847 int SSL_accept(SSL *s) {
848 if (s->handshake_func == 0) {
849 /* Not properly initialized yet */
850 SSL_set_accept_state(s);
851 }
852
853 if (s->handshake_func != s->method->ssl_accept) {
854 OPENSSL_PUT_ERROR(SSL, SSL_accept, ERR_R_INTERNAL_ERROR);
855 return -1;
856 }
857
858 return s->handshake_func(s);
859 }
860
SSL_connect(SSL * s)861 int SSL_connect(SSL *s) {
862 if (s->handshake_func == 0) {
863 /* Not properly initialized yet */
864 SSL_set_connect_state(s);
865 }
866
867 if (s->handshake_func != s->method->ssl_connect) {
868 OPENSSL_PUT_ERROR(SSL, SSL_connect, ERR_R_INTERNAL_ERROR);
869 return -1;
870 }
871
872 return s->handshake_func(s);
873 }
874
SSL_get_default_timeout(const SSL * s)875 long SSL_get_default_timeout(const SSL *s) {
876 return SSL_DEFAULT_SESSION_TIMEOUT;
877 }
878
SSL_read(SSL * s,void * buf,int num)879 int SSL_read(SSL *s, void *buf, int num) {
880 if (s->handshake_func == 0) {
881 OPENSSL_PUT_ERROR(SSL, SSL_read, SSL_R_UNINITIALIZED);
882 return -1;
883 }
884
885 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
886 s->rwstate = SSL_NOTHING;
887 return 0;
888 }
889
890 ERR_clear_system_error();
891 return s->method->ssl_read_app_data(s, buf, num, 0);
892 }
893
SSL_peek(SSL * s,void * buf,int num)894 int SSL_peek(SSL *s, void *buf, int num) {
895 if (s->handshake_func == 0) {
896 OPENSSL_PUT_ERROR(SSL, SSL_peek, SSL_R_UNINITIALIZED);
897 return -1;
898 }
899
900 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
901 return 0;
902 }
903
904 ERR_clear_system_error();
905 return s->method->ssl_read_app_data(s, buf, num, 1);
906 }
907
SSL_write(SSL * s,const void * buf,int num)908 int SSL_write(SSL *s, const void *buf, int num) {
909 if (s->handshake_func == 0) {
910 OPENSSL_PUT_ERROR(SSL, SSL_write, SSL_R_UNINITIALIZED);
911 return -1;
912 }
913
914 if (s->shutdown & SSL_SENT_SHUTDOWN) {
915 s->rwstate = SSL_NOTHING;
916 OPENSSL_PUT_ERROR(SSL, SSL_write, SSL_R_PROTOCOL_IS_SHUTDOWN);
917 return -1;
918 }
919
920 ERR_clear_system_error();
921 return s->method->ssl_write_app_data(s, buf, num);
922 }
923
SSL_shutdown(SSL * s)924 int SSL_shutdown(SSL *s) {
925 /* Note that this function behaves differently from what one might expect.
926 * Return values are 0 for no success (yet), 1 for success; but calling it
927 * once is usually not enough, even if blocking I/O is used (see
928 * ssl3_shutdown). */
929
930 if (s->handshake_func == 0) {
931 OPENSSL_PUT_ERROR(SSL, SSL_shutdown, SSL_R_UNINITIALIZED);
932 return -1;
933 }
934
935 if (SSL_in_init(s)) {
936 return 1;
937 }
938
939 /* Do nothing if configured not to send a close_notify. */
940 if (s->quiet_shutdown) {
941 s->shutdown = SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN;
942 return 1;
943 }
944
945 if (!(s->shutdown & SSL_SENT_SHUTDOWN)) {
946 s->shutdown |= SSL_SENT_SHUTDOWN;
947 ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_CLOSE_NOTIFY);
948
949 /* our shutdown alert has been sent now, and if it still needs to be
950 * written, s->s3->alert_dispatch will be true */
951 if (s->s3->alert_dispatch) {
952 return -1; /* return WANT_WRITE */
953 }
954 } else if (s->s3->alert_dispatch) {
955 /* resend it if not sent */
956 int ret = s->method->ssl_dispatch_alert(s);
957 if (ret == -1) {
958 /* we only get to return -1 here the 2nd/Nth invocation, we must have
959 * already signalled return 0 upon a previous invoation, return
960 * WANT_WRITE */
961 return ret;
962 }
963 } else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN)) {
964 /* If we are waiting for a close from our peer, we are closed */
965 s->method->ssl_read_close_notify(s);
966 if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN)) {
967 return -1; /* return WANT_READ */
968 }
969 }
970
971 if (s->shutdown == (SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN) &&
972 !s->s3->alert_dispatch) {
973 return 1;
974 } else {
975 return 0;
976 }
977 }
978
SSL_renegotiate(SSL * ssl)979 int SSL_renegotiate(SSL *ssl) {
980 /* Caller-initiated renegotiation is not supported. */
981 OPENSSL_PUT_ERROR(SSL, SSL_renegotiate, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
982 return 0;
983 }
984
SSL_renegotiate_pending(SSL * ssl)985 int SSL_renegotiate_pending(SSL *ssl) {
986 return SSL_in_init(ssl) && ssl->s3->initial_handshake_complete;
987 }
988
SSL_CTX_set_options(SSL_CTX * ctx,uint32_t options)989 uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options) {
990 ctx->options |= options;
991 return ctx->options;
992 }
993
SSL_set_options(SSL * ssl,uint32_t options)994 uint32_t SSL_set_options(SSL *ssl, uint32_t options) {
995 ssl->options |= options;
996 return ssl->options;
997 }
998
SSL_CTX_clear_options(SSL_CTX * ctx,uint32_t options)999 uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options) {
1000 ctx->options &= ~options;
1001 return ctx->options;
1002 }
1003
SSL_clear_options(SSL * ssl,uint32_t options)1004 uint32_t SSL_clear_options(SSL *ssl, uint32_t options) {
1005 ssl->options &= ~options;
1006 return ssl->options;
1007 }
1008
SSL_CTX_get_options(const SSL_CTX * ctx)1009 uint32_t SSL_CTX_get_options(const SSL_CTX *ctx) { return ctx->options; }
1010
SSL_get_options(const SSL * ssl)1011 uint32_t SSL_get_options(const SSL *ssl) { return ssl->options; }
1012
SSL_CTX_set_mode(SSL_CTX * ctx,uint32_t mode)1013 uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode) {
1014 ctx->mode |= mode;
1015 return ctx->mode;
1016 }
1017
SSL_set_mode(SSL * ssl,uint32_t mode)1018 uint32_t SSL_set_mode(SSL *ssl, uint32_t mode) {
1019 ssl->mode |= mode;
1020 return ssl->mode;
1021 }
1022
SSL_CTX_clear_mode(SSL_CTX * ctx,uint32_t mode)1023 uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode) {
1024 ctx->mode &= ~mode;
1025 return ctx->mode;
1026 }
1027
SSL_clear_mode(SSL * ssl,uint32_t mode)1028 uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode) {
1029 ssl->mode &= ~mode;
1030 return ssl->mode;
1031 }
1032
SSL_CTX_get_mode(const SSL_CTX * ctx)1033 uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx) { return ctx->mode; }
1034
SSL_get_mode(const SSL * ssl)1035 uint32_t SSL_get_mode(const SSL *ssl) { return ssl->mode; }
1036
SSL_CTX_get_max_cert_list(const SSL_CTX * ctx)1037 size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx) {
1038 return ctx->max_cert_list;
1039 }
1040
SSL_CTX_set_max_cert_list(SSL_CTX * ctx,size_t max_cert_list)1041 void SSL_CTX_set_max_cert_list(SSL_CTX *ctx, size_t max_cert_list) {
1042 if (max_cert_list > kMaxHandshakeSize) {
1043 max_cert_list = kMaxHandshakeSize;
1044 }
1045 ctx->max_cert_list = (uint32_t)max_cert_list;
1046 }
1047
SSL_get_max_cert_list(const SSL * ssl)1048 size_t SSL_get_max_cert_list(const SSL *ssl) {
1049 return ssl->max_cert_list;
1050 }
1051
SSL_set_max_cert_list(SSL * ssl,size_t max_cert_list)1052 void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list) {
1053 if (max_cert_list > kMaxHandshakeSize) {
1054 max_cert_list = kMaxHandshakeSize;
1055 }
1056 ssl->max_cert_list = (uint32_t)max_cert_list;
1057 }
1058
SSL_CTX_set_max_send_fragment(SSL_CTX * ctx,size_t max_send_fragment)1059 void SSL_CTX_set_max_send_fragment(SSL_CTX *ctx, size_t max_send_fragment) {
1060 if (max_send_fragment < 512) {
1061 max_send_fragment = 512;
1062 }
1063 if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
1064 max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1065 }
1066 ctx->max_send_fragment = (uint16_t)max_send_fragment;
1067 }
1068
SSL_set_max_send_fragment(SSL * ssl,size_t max_send_fragment)1069 void SSL_set_max_send_fragment(SSL *ssl, size_t max_send_fragment) {
1070 if (max_send_fragment < 512) {
1071 max_send_fragment = 512;
1072 }
1073 if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
1074 max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1075 }
1076 ssl->max_send_fragment = (uint16_t)max_send_fragment;
1077 }
1078
SSL_set_mtu(SSL * ssl,unsigned mtu)1079 int SSL_set_mtu(SSL *ssl, unsigned mtu) {
1080 if (!SSL_IS_DTLS(ssl) || mtu < dtls1_min_mtu()) {
1081 return 0;
1082 }
1083 ssl->d1->mtu = mtu;
1084 return 1;
1085 }
1086
SSL_get_secure_renegotiation_support(const SSL * ssl)1087 int SSL_get_secure_renegotiation_support(const SSL *ssl) {
1088 return ssl->s3->send_connection_binding;
1089 }
1090
SSL_ctrl(SSL * s,int cmd,long larg,void * parg)1091 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) {
1092 return s->method->ssl_ctrl(s, cmd, larg, parg);
1093 }
1094
LHASH_OF(SSL_SESSION)1095 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) { return ctx->sessions; }
1096
SSL_CTX_sess_number(const SSL_CTX * ctx)1097 size_t SSL_CTX_sess_number(const SSL_CTX *ctx) {
1098 return lh_SSL_SESSION_num_items(ctx->sessions);
1099 }
1100
SSL_CTX_sess_set_cache_size(SSL_CTX * ctx,unsigned long size)1101 unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, unsigned long size) {
1102 unsigned long ret = ctx->session_cache_size;
1103 ctx->session_cache_size = size;
1104 return ret;
1105 }
1106
SSL_CTX_sess_get_cache_size(const SSL_CTX * ctx)1107 unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx) {
1108 return ctx->session_cache_size;
1109 }
1110
SSL_CTX_set_session_cache_mode(SSL_CTX * ctx,int mode)1111 int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode) {
1112 int ret = ctx->session_cache_mode;
1113 ctx->session_cache_mode = mode;
1114 return ret;
1115 }
1116
SSL_CTX_get_session_cache_mode(const SSL_CTX * ctx)1117 int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx) {
1118 return ctx->session_cache_mode;
1119 }
1120
SSL_CTX_ctrl(SSL_CTX * ctx,int cmd,long larg,void * parg)1121 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) {
1122 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
1123 }
1124
1125 /* return a STACK of the ciphers available for the SSL and in order of
1126 * preference */
STACK_OF(SSL_CIPHER)1127 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) {
1128 if (s == NULL) {
1129 return NULL;
1130 }
1131
1132 if (s->cipher_list != NULL) {
1133 return s->cipher_list->ciphers;
1134 }
1135
1136 if (s->version >= TLS1_1_VERSION && s->ctx != NULL &&
1137 s->ctx->cipher_list_tls11 != NULL) {
1138 return s->ctx->cipher_list_tls11->ciphers;
1139 }
1140
1141 if (s->ctx != NULL && s->ctx->cipher_list != NULL) {
1142 return s->ctx->cipher_list->ciphers;
1143 }
1144
1145 return NULL;
1146 }
1147
1148 /* return a STACK of the ciphers available for the SSL and in order of
1149 * algorithm id */
STACK_OF(SSL_CIPHER)1150 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) {
1151 if (s == NULL) {
1152 return NULL;
1153 }
1154
1155 if (s->cipher_list_by_id != NULL) {
1156 return s->cipher_list_by_id;
1157 }
1158
1159 if (s->ctx != NULL && s->ctx->cipher_list_by_id != NULL) {
1160 return s->ctx->cipher_list_by_id;
1161 }
1162
1163 return NULL;
1164 }
1165
1166 /* The old interface to get the same thing as SSL_get_ciphers() */
SSL_get_cipher_list(const SSL * s,int n)1167 const char *SSL_get_cipher_list(const SSL *s, int n) {
1168 const SSL_CIPHER *c;
1169 STACK_OF(SSL_CIPHER) *sk;
1170
1171 if (s == NULL) {
1172 return NULL;
1173 }
1174
1175 sk = SSL_get_ciphers(s);
1176 if (sk == NULL || n < 0 || (size_t)n >= sk_SSL_CIPHER_num(sk)) {
1177 return NULL;
1178 }
1179
1180 c = sk_SSL_CIPHER_value(sk, n);
1181 if (c == NULL) {
1182 return NULL;
1183 }
1184
1185 return c->name;
1186 }
1187
1188 /* specify the ciphers to be used by default by the SSL_CTX */
SSL_CTX_set_cipher_list(SSL_CTX * ctx,const char * str)1189 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) {
1190 STACK_OF(SSL_CIPHER) *sk;
1191
1192 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1193 &ctx->cipher_list_by_id, str);
1194 /* ssl_create_cipher_list may return an empty stack if it was unable to find
1195 * a cipher matching the given rule string (for example if the rule string
1196 * specifies a cipher which has been disabled). This is not an error as far
1197 * as ssl_create_cipher_list is concerned, and hence ctx->cipher_list and
1198 * ctx->cipher_list_by_id has been updated. */
1199 if (sk == NULL) {
1200 return 0;
1201 } else if (sk_SSL_CIPHER_num(sk) == 0) {
1202 OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_cipher_list, SSL_R_NO_CIPHER_MATCH);
1203 return 0;
1204 }
1205
1206 return 1;
1207 }
1208
SSL_CTX_set_cipher_list_tls11(SSL_CTX * ctx,const char * str)1209 int SSL_CTX_set_cipher_list_tls11(SSL_CTX *ctx, const char *str) {
1210 STACK_OF(SSL_CIPHER) *sk;
1211
1212 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list_tls11, NULL, str);
1213 if (sk == NULL) {
1214 return 0;
1215 } else if (sk_SSL_CIPHER_num(sk) == 0) {
1216 OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_cipher_list_tls11,
1217 SSL_R_NO_CIPHER_MATCH);
1218 return 0;
1219 }
1220
1221 return 1;
1222 }
1223
1224 /* specify the ciphers to be used by the SSL */
SSL_set_cipher_list(SSL * s,const char * str)1225 int SSL_set_cipher_list(SSL *s, const char *str) {
1226 STACK_OF(SSL_CIPHER) *sk;
1227
1228 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1229 &s->cipher_list_by_id, str);
1230
1231 /* see comment in SSL_CTX_set_cipher_list */
1232 if (sk == NULL) {
1233 return 0;
1234 } else if (sk_SSL_CIPHER_num(sk) == 0) {
1235 OPENSSL_PUT_ERROR(SSL, SSL_set_cipher_list, SSL_R_NO_CIPHER_MATCH);
1236 return 0;
1237 }
1238
1239 return 1;
1240 }
1241
ssl_cipher_list_to_bytes(SSL * s,STACK_OF (SSL_CIPHER)* sk,uint8_t * p)1242 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, uint8_t *p) {
1243 size_t i;
1244 const SSL_CIPHER *c;
1245 CERT *ct = s->cert;
1246 uint8_t *q;
1247 /* Set disabled masks for this session */
1248 ssl_set_client_disabled(s);
1249
1250 if (sk == NULL) {
1251 return 0;
1252 }
1253 q = p;
1254
1255 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1256 c = sk_SSL_CIPHER_value(sk, i);
1257 /* Skip disabled ciphers */
1258 if (c->algorithm_ssl & ct->mask_ssl ||
1259 c->algorithm_mkey & ct->mask_k ||
1260 c->algorithm_auth & ct->mask_a) {
1261 continue;
1262 }
1263 s2n(ssl_cipher_get_value(c), p);
1264 }
1265
1266 /* If all ciphers were disabled, return the error to the caller. */
1267 if (p == q) {
1268 return 0;
1269 }
1270
1271 /* Add SCSVs. */
1272 if (!s->s3->initial_handshake_complete) {
1273 s2n(SSL3_CK_SCSV & 0xffff, p);
1274 }
1275
1276 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1277 s2n(SSL3_CK_FALLBACK_SCSV & 0xffff, p);
1278 }
1279
1280 return p - q;
1281 }
1282
STACK_OF(SSL_CIPHER)1283 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const CBS *cbs) {
1284 CBS cipher_suites = *cbs;
1285 const SSL_CIPHER *c;
1286 STACK_OF(SSL_CIPHER) *sk;
1287
1288 if (s->s3) {
1289 s->s3->send_connection_binding = 0;
1290 }
1291
1292 if (CBS_len(&cipher_suites) % 2 != 0) {
1293 OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list,
1294 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1295 return NULL;
1296 }
1297
1298 sk = sk_SSL_CIPHER_new_null();
1299 if (sk == NULL) {
1300 OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list, ERR_R_MALLOC_FAILURE);
1301 goto err;
1302 }
1303
1304 while (CBS_len(&cipher_suites) > 0) {
1305 uint16_t cipher_suite;
1306
1307 if (!CBS_get_u16(&cipher_suites, &cipher_suite)) {
1308 OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list, ERR_R_INTERNAL_ERROR);
1309 goto err;
1310 }
1311
1312 /* Check for SCSV. */
1313 if (s->s3 && cipher_suite == (SSL3_CK_SCSV & 0xffff)) {
1314 /* SCSV is fatal if renegotiating. */
1315 if (s->s3->initial_handshake_complete) {
1316 OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list,
1317 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1318 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1319 goto err;
1320 }
1321 s->s3->send_connection_binding = 1;
1322 continue;
1323 }
1324
1325 /* Check for FALLBACK_SCSV. */
1326 if (s->s3 && cipher_suite == (SSL3_CK_FALLBACK_SCSV & 0xffff)) {
1327 uint16_t max_version = ssl3_get_max_server_version(s);
1328 if (SSL_IS_DTLS(s) ? (uint16_t)s->version > max_version
1329 : (uint16_t)s->version < max_version) {
1330 OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list,
1331 SSL_R_INAPPROPRIATE_FALLBACK);
1332 ssl3_send_alert(s, SSL3_AL_FATAL, SSL3_AD_INAPPROPRIATE_FALLBACK);
1333 goto err;
1334 }
1335 continue;
1336 }
1337
1338 c = SSL_get_cipher_by_value(cipher_suite);
1339 if (c != NULL && !sk_SSL_CIPHER_push(sk, c)) {
1340 OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list, ERR_R_MALLOC_FAILURE);
1341 goto err;
1342 }
1343 }
1344
1345 return sk;
1346
1347 err:
1348 sk_SSL_CIPHER_free(sk);
1349 return NULL;
1350 }
1351
1352
1353 /* return a servername extension value if provided in Client Hello, or NULL. So
1354 * far, only host_name types are defined (RFC 3546). */
SSL_get_servername(const SSL * s,const int type)1355 const char *SSL_get_servername(const SSL *s, const int type) {
1356 if (type != TLSEXT_NAMETYPE_host_name) {
1357 return NULL;
1358 }
1359
1360 return s->session && !s->tlsext_hostname ? s->session->tlsext_hostname
1361 : s->tlsext_hostname;
1362 }
1363
SSL_get_servername_type(const SSL * s)1364 int SSL_get_servername_type(const SSL *s) {
1365 if (s->session &&
1366 (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) {
1367 return TLSEXT_NAMETYPE_host_name;
1368 }
1369
1370 return -1;
1371 }
1372
SSL_CTX_enable_signed_cert_timestamps(SSL_CTX * ctx)1373 void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx) {
1374 ctx->signed_cert_timestamps_enabled = 1;
1375 }
1376
SSL_enable_signed_cert_timestamps(SSL * ssl)1377 int SSL_enable_signed_cert_timestamps(SSL *ssl) {
1378 ssl->signed_cert_timestamps_enabled = 1;
1379 return 1;
1380 }
1381
SSL_CTX_enable_ocsp_stapling(SSL_CTX * ctx)1382 void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx) {
1383 ctx->ocsp_stapling_enabled = 1;
1384 }
1385
SSL_enable_ocsp_stapling(SSL * ssl)1386 int SSL_enable_ocsp_stapling(SSL *ssl) {
1387 ssl->ocsp_stapling_enabled = 1;
1388 return 1;
1389 }
1390
SSL_get0_signed_cert_timestamp_list(const SSL * ssl,const uint8_t ** out,size_t * out_len)1391 void SSL_get0_signed_cert_timestamp_list(const SSL *ssl, const uint8_t **out,
1392 size_t *out_len) {
1393 SSL_SESSION *session = ssl->session;
1394
1395 *out_len = 0;
1396 *out = NULL;
1397 if (ssl->server || !session || !session->tlsext_signed_cert_timestamp_list) {
1398 return;
1399 }
1400
1401 *out = session->tlsext_signed_cert_timestamp_list;
1402 *out_len = session->tlsext_signed_cert_timestamp_list_length;
1403 }
1404
SSL_get0_ocsp_response(const SSL * ssl,const uint8_t ** out,size_t * out_len)1405 void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
1406 size_t *out_len) {
1407 SSL_SESSION *session = ssl->session;
1408
1409 *out_len = 0;
1410 *out = NULL;
1411 if (ssl->server || !session || !session->ocsp_response) {
1412 return;
1413 }
1414 *out = session->ocsp_response;
1415 *out_len = session->ocsp_response_length;
1416 }
1417
1418 /* SSL_select_next_proto implements the standard protocol selection. It is
1419 * expected that this function is called from the callback set by
1420 * SSL_CTX_set_next_proto_select_cb.
1421 *
1422 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1423 * strings. The length byte itself is not included in the length. A byte
1424 * string of length 0 is invalid. No byte string may be truncated.
1425 *
1426 * The current, but experimental algorithm for selecting the protocol is:
1427 *
1428 * 1) If the server doesn't support NPN then this is indicated to the
1429 * callback. In this case, the client application has to abort the connection
1430 * or have a default application level protocol.
1431 *
1432 * 2) If the server supports NPN, but advertises an empty list then the
1433 * client selects the first protcol in its list, but indicates via the
1434 * API that this fallback case was enacted.
1435 *
1436 * 3) Otherwise, the client finds the first protocol in the server's list
1437 * that it supports and selects this protocol. This is because it's
1438 * assumed that the server has better information about which protocol
1439 * a client should use.
1440 *
1441 * 4) If the client doesn't support any of the server's advertised
1442 * protocols, then this is treated the same as case 2.
1443 *
1444 * It returns either
1445 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1446 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1447 */
SSL_select_next_proto(uint8_t ** out,uint8_t * outlen,const uint8_t * server,unsigned int server_len,const uint8_t * client,unsigned int client_len)1448 int SSL_select_next_proto(uint8_t **out, uint8_t *outlen, const uint8_t *server,
1449 unsigned int server_len, const uint8_t *client,
1450 unsigned int client_len) {
1451 unsigned int i, j;
1452 const uint8_t *result;
1453 int status = OPENSSL_NPN_UNSUPPORTED;
1454
1455 /* For each protocol in server preference order, see if we support it. */
1456 for (i = 0; i < server_len;) {
1457 for (j = 0; j < client_len;) {
1458 if (server[i] == client[j] &&
1459 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1460 /* We found a match */
1461 result = &server[i];
1462 status = OPENSSL_NPN_NEGOTIATED;
1463 goto found;
1464 }
1465 j += client[j];
1466 j++;
1467 }
1468 i += server[i];
1469 i++;
1470 }
1471
1472 /* There's no overlap between our protocols and the server's list. */
1473 result = client;
1474 status = OPENSSL_NPN_NO_OVERLAP;
1475
1476 found:
1477 *out = (uint8_t *)result + 1;
1478 *outlen = result[0];
1479 return status;
1480 }
1481
1482 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1483 * requested protocol for this connection and returns 0. If the client didn't
1484 * request any protocol, then *data is set to NULL.
1485 *
1486 * Note that the client can request any protocol it chooses. The value returned
1487 * from this function need not be a member of the list of supported protocols
1488 * provided by the callback. */
SSL_get0_next_proto_negotiated(const SSL * s,const uint8_t ** data,unsigned * len)1489 void SSL_get0_next_proto_negotiated(const SSL *s, const uint8_t **data,
1490 unsigned *len) {
1491 *data = s->next_proto_negotiated;
1492 if (!*data) {
1493 *len = 0;
1494 } else {
1495 *len = s->next_proto_negotiated_len;
1496 }
1497 }
1498
1499 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1500 * TLS server needs a list of supported protocols for Next Protocol
1501 * Negotiation. The returned list must be in wire format. The list is returned
1502 * by setting |out| to point to it and |outlen| to its length. This memory will
1503 * not be modified, but one should assume that the SSL* keeps a reference to
1504 * it.
1505 *
1506 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise.
1507 * Otherwise, no such extension will be included in the ServerHello. */
SSL_CTX_set_next_protos_advertised_cb(SSL_CTX * ctx,int (* cb)(SSL * ssl,const uint8_t ** out,unsigned int * outlen,void * arg),void * arg)1508 void SSL_CTX_set_next_protos_advertised_cb(
1509 SSL_CTX *ctx,
1510 int (*cb)(SSL *ssl, const uint8_t **out, unsigned int *outlen, void *arg),
1511 void *arg) {
1512 ctx->next_protos_advertised_cb = cb;
1513 ctx->next_protos_advertised_cb_arg = arg;
1514 }
1515
1516 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1517 * client needs to select a protocol from the server's provided list. |out|
1518 * must be set to point to the selected protocol (which may be within |in|).
1519 * The length of the protocol name must be written into |outlen|. The server's
1520 * advertised protocols are provided in |in| and |inlen|. The callback can
1521 * assume that |in| is syntactically valid.
1522 *
1523 * The client must select a protocol. It is fatal to the connection if this
1524 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1525 */
SSL_CTX_set_next_proto_select_cb(SSL_CTX * ctx,int (* cb)(SSL * s,uint8_t ** out,uint8_t * outlen,const uint8_t * in,unsigned int inlen,void * arg),void * arg)1526 void SSL_CTX_set_next_proto_select_cb(
1527 SSL_CTX *ctx, int (*cb)(SSL *s, uint8_t **out, uint8_t *outlen,
1528 const uint8_t *in, unsigned int inlen, void *arg),
1529 void *arg) {
1530 ctx->next_proto_select_cb = cb;
1531 ctx->next_proto_select_cb_arg = arg;
1532 }
1533
SSL_CTX_set_alpn_protos(SSL_CTX * ctx,const uint8_t * protos,unsigned protos_len)1534 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
1535 unsigned protos_len) {
1536 OPENSSL_free(ctx->alpn_client_proto_list);
1537 ctx->alpn_client_proto_list = BUF_memdup(protos, protos_len);
1538 if (!ctx->alpn_client_proto_list) {
1539 return 1;
1540 }
1541 ctx->alpn_client_proto_list_len = protos_len;
1542
1543 return 0;
1544 }
1545
SSL_set_alpn_protos(SSL * ssl,const uint8_t * protos,unsigned protos_len)1546 int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos, unsigned protos_len) {
1547 OPENSSL_free(ssl->alpn_client_proto_list);
1548 ssl->alpn_client_proto_list = BUF_memdup(protos, protos_len);
1549 if (!ssl->alpn_client_proto_list) {
1550 return 1;
1551 }
1552 ssl->alpn_client_proto_list_len = protos_len;
1553
1554 return 0;
1555 }
1556
1557 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
1558 * during ClientHello processing in order to select an ALPN protocol from the
1559 * client's list of offered protocols. */
SSL_CTX_set_alpn_select_cb(SSL_CTX * ctx,int (* cb)(SSL * ssl,const uint8_t ** out,uint8_t * outlen,const uint8_t * in,unsigned int inlen,void * arg),void * arg)1560 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1561 int (*cb)(SSL *ssl, const uint8_t **out,
1562 uint8_t *outlen, const uint8_t *in,
1563 unsigned int inlen, void *arg),
1564 void *arg) {
1565 ctx->alpn_select_cb = cb;
1566 ctx->alpn_select_cb_arg = arg;
1567 }
1568
1569 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
1570 * On return it sets |*data| to point to |*len| bytes of protocol name (not
1571 * including the leading length-prefix byte). If the server didn't respond with
1572 * a negotiated protocol then |*len| will be zero. */
SSL_get0_alpn_selected(const SSL * ssl,const uint8_t ** data,unsigned * len)1573 void SSL_get0_alpn_selected(const SSL *ssl, const uint8_t **data,
1574 unsigned *len) {
1575 *data = NULL;
1576 if (ssl->s3) {
1577 *data = ssl->s3->alpn_selected;
1578 }
1579 if (*data == NULL) {
1580 *len = 0;
1581 } else {
1582 *len = ssl->s3->alpn_selected_len;
1583 }
1584 }
1585
SSL_export_keying_material(SSL * s,uint8_t * out,size_t out_len,const char * label,size_t label_len,const uint8_t * context,size_t context_len,int use_context)1586 int SSL_export_keying_material(SSL *s, uint8_t *out, size_t out_len,
1587 const char *label, size_t label_len,
1588 const uint8_t *context, size_t context_len,
1589 int use_context) {
1590 if (s->version < TLS1_VERSION) {
1591 return 0;
1592 }
1593
1594 return s->enc_method->export_keying_material(
1595 s, out, out_len, label, label_len, context, context_len, use_context);
1596 }
1597
ssl_session_hash(const SSL_SESSION * a)1598 static uint32_t ssl_session_hash(const SSL_SESSION *a) {
1599 uint32_t hash =
1600 ((uint32_t)a->session_id[0]) ||
1601 ((uint32_t)a->session_id[1] << 8) ||
1602 ((uint32_t)a->session_id[2] << 16) ||
1603 ((uint32_t)a->session_id[3] << 24);
1604
1605 return hash;
1606 }
1607
1608 /* NB: If this function (or indeed the hash function which uses a sort of
1609 * coarser function than this one) is changed, ensure
1610 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1611 * able to construct an SSL_SESSION that will collide with any existing session
1612 * with a matching session ID. */
ssl_session_cmp(const SSL_SESSION * a,const SSL_SESSION * b)1613 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) {
1614 if (a->ssl_version != b->ssl_version) {
1615 return 1;
1616 }
1617
1618 if (a->session_id_length != b->session_id_length) {
1619 return 1;
1620 }
1621
1622 return memcmp(a->session_id, b->session_id, a->session_id_length);
1623 }
1624
SSL_CTX_new(const SSL_METHOD * method)1625 SSL_CTX *SSL_CTX_new(const SSL_METHOD *method) {
1626 SSL_CTX *ret = NULL;
1627
1628 if (method == NULL) {
1629 OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, SSL_R_NULL_SSL_METHOD_PASSED);
1630 return NULL;
1631 }
1632
1633 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1634 OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1635 goto err;
1636 }
1637
1638 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1639 if (ret == NULL) {
1640 goto err;
1641 }
1642
1643 memset(ret, 0, sizeof(SSL_CTX));
1644
1645 ret->method = method->method;
1646
1647 CRYPTO_MUTEX_init(&ret->lock);
1648
1649 ret->cert_store = NULL;
1650 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1651 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1652 ret->session_cache_head = NULL;
1653 ret->session_cache_tail = NULL;
1654
1655 /* We take the system default */
1656 ret->session_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
1657
1658 ret->new_session_cb = 0;
1659 ret->remove_session_cb = 0;
1660 ret->get_session_cb = 0;
1661 ret->generate_session_id = 0;
1662
1663 ret->references = 1;
1664 ret->quiet_shutdown = 0;
1665
1666 ret->info_callback = NULL;
1667
1668 ret->app_verify_callback = 0;
1669 ret->app_verify_arg = NULL;
1670
1671 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1672 ret->msg_callback = 0;
1673 ret->msg_callback_arg = NULL;
1674 ret->verify_mode = SSL_VERIFY_NONE;
1675 ret->sid_ctx_length = 0;
1676 ret->default_verify_callback = NULL;
1677 ret->cert = ssl_cert_new();
1678 if (ret->cert == NULL) {
1679 goto err;
1680 }
1681
1682 ret->default_passwd_callback = 0;
1683 ret->default_passwd_callback_userdata = NULL;
1684 ret->client_cert_cb = 0;
1685
1686 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
1687 if (ret->sessions == NULL) {
1688 goto err;
1689 }
1690 ret->cert_store = X509_STORE_new();
1691 if (ret->cert_store == NULL) {
1692 goto err;
1693 }
1694
1695 ssl_create_cipher_list(ret->method, &ret->cipher_list,
1696 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST);
1697 if (ret->cipher_list == NULL ||
1698 sk_SSL_CIPHER_num(ret->cipher_list->ciphers) <= 0) {
1699 OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1700 goto err2;
1701 }
1702
1703 ret->param = X509_VERIFY_PARAM_new();
1704 if (!ret->param) {
1705 goto err;
1706 }
1707
1708 ret->client_CA = sk_X509_NAME_new_null();
1709 if (ret->client_CA == NULL) {
1710 goto err;
1711 }
1712
1713 CRYPTO_new_ex_data(&g_ex_data_class_ssl_ctx, ret, &ret->ex_data);
1714
1715 ret->extra_certs = NULL;
1716
1717 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1718
1719 ret->tlsext_servername_callback = 0;
1720 ret->tlsext_servername_arg = NULL;
1721 /* Setup RFC4507 ticket keys */
1722 if (!RAND_bytes(ret->tlsext_tick_key_name, 16) ||
1723 !RAND_bytes(ret->tlsext_tick_hmac_key, 16) ||
1724 !RAND_bytes(ret->tlsext_tick_aes_key, 16)) {
1725 ret->options |= SSL_OP_NO_TICKET;
1726 }
1727
1728 ret->next_protos_advertised_cb = 0;
1729 ret->next_proto_select_cb = 0;
1730 ret->psk_identity_hint = NULL;
1731 ret->psk_client_callback = NULL;
1732 ret->psk_server_callback = NULL;
1733
1734 /* Default is to connect to non-RI servers. When RI is more widely deployed
1735 * might change this. */
1736 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1737
1738 /* Lock the SSL_CTX to the specified version, for compatibility with legacy
1739 * uses of SSL_METHOD. */
1740 if (method->version != 0) {
1741 SSL_CTX_set_max_version(ret, method->version);
1742 SSL_CTX_set_min_version(ret, method->version);
1743 }
1744
1745 return ret;
1746
1747 err:
1748 OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, ERR_R_MALLOC_FAILURE);
1749 err2:
1750 SSL_CTX_free(ret);
1751 return NULL;
1752 }
1753
SSL_CTX_free(SSL_CTX * ctx)1754 void SSL_CTX_free(SSL_CTX *ctx) {
1755 if (ctx == NULL ||
1756 !CRYPTO_refcount_dec_and_test_zero(&ctx->references)) {
1757 return;
1758 }
1759
1760 X509_VERIFY_PARAM_free(ctx->param);
1761
1762 /* Free internal session cache. However: the remove_cb() may reference the
1763 * ex_data of SSL_CTX, thus the ex_data store can only be removed after the
1764 * sessions were flushed. As the ex_data handling routines might also touch
1765 * the session cache, the most secure solution seems to be: empty (flush) the
1766 * cache, then free ex_data, then finally free the cache. (See ticket
1767 * [openssl.org #212].) */
1768 SSL_CTX_flush_sessions(ctx, 0);
1769
1770 CRYPTO_free_ex_data(&g_ex_data_class_ssl_ctx, ctx, &ctx->ex_data);
1771
1772 CRYPTO_MUTEX_cleanup(&ctx->lock);
1773 lh_SSL_SESSION_free(ctx->sessions);
1774 X509_STORE_free(ctx->cert_store);
1775 ssl_cipher_preference_list_free(ctx->cipher_list);
1776 sk_SSL_CIPHER_free(ctx->cipher_list_by_id);
1777 ssl_cipher_preference_list_free(ctx->cipher_list_tls11);
1778 ssl_cert_free(ctx->cert);
1779 sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free);
1780 sk_X509_pop_free(ctx->extra_certs, X509_free);
1781 sk_SRTP_PROTECTION_PROFILE_free(ctx->srtp_profiles);
1782 OPENSSL_free(ctx->psk_identity_hint);
1783 OPENSSL_free(ctx->tlsext_ecpointformatlist);
1784 OPENSSL_free(ctx->tlsext_ellipticcurvelist);
1785 OPENSSL_free(ctx->alpn_client_proto_list);
1786 EVP_PKEY_free(ctx->tlsext_channel_id_private);
1787 BIO_free(ctx->keylog_bio);
1788
1789 OPENSSL_free(ctx);
1790 }
1791
SSL_CTX_set_default_passwd_cb(SSL_CTX * ctx,pem_password_cb * cb)1792 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) {
1793 ctx->default_passwd_callback = cb;
1794 }
1795
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX * ctx,void * u)1796 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) {
1797 ctx->default_passwd_callback_userdata = u;
1798 }
1799
SSL_CTX_set_cert_verify_callback(SSL_CTX * ctx,int (* cb)(X509_STORE_CTX *,void *),void * arg)1800 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1801 int (*cb)(X509_STORE_CTX *, void *),
1802 void *arg) {
1803 ctx->app_verify_callback = cb;
1804 ctx->app_verify_arg = arg;
1805 }
1806
SSL_CTX_set_verify(SSL_CTX * ctx,int mode,int (* cb)(int,X509_STORE_CTX *))1807 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
1808 int (*cb)(int, X509_STORE_CTX *)) {
1809 ctx->verify_mode = mode;
1810 ctx->default_verify_callback = cb;
1811 }
1812
SSL_CTX_set_verify_depth(SSL_CTX * ctx,int depth)1813 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) {
1814 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1815 }
1816
SSL_CTX_set_cert_cb(SSL_CTX * c,int (* cb)(SSL * ssl,void * arg),void * arg)1817 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg),
1818 void *arg) {
1819 ssl_cert_set_cert_cb(c->cert, cb, arg);
1820 }
1821
SSL_set_cert_cb(SSL * s,int (* cb)(SSL * ssl,void * arg),void * arg)1822 void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg) {
1823 ssl_cert_set_cert_cb(s->cert, cb, arg);
1824 }
1825
ssl_has_key(SSL * s,size_t idx)1826 static int ssl_has_key(SSL *s, size_t idx) {
1827 CERT_PKEY *cpk = &s->cert->pkeys[idx];
1828 return cpk->x509 && cpk->privatekey;
1829 }
1830
ssl_get_compatible_server_ciphers(SSL * s,uint32_t * out_mask_k,uint32_t * out_mask_a)1831 void ssl_get_compatible_server_ciphers(SSL *s, uint32_t *out_mask_k,
1832 uint32_t *out_mask_a) {
1833 CERT *c = s->cert;
1834 int rsa_enc, rsa_sign, dh_tmp;
1835 uint32_t mask_k, mask_a;
1836 int have_ecc_cert, ecdsa_ok;
1837 X509 *x;
1838
1839 if (c == NULL) {
1840 /* TODO(davidben): Is this codepath possible? */
1841 *out_mask_k = 0;
1842 *out_mask_a = 0;
1843 return;
1844 }
1845
1846 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1847
1848 rsa_enc = ssl_has_key(s, SSL_PKEY_RSA_ENC);
1849 rsa_sign = ssl_has_key(s, SSL_PKEY_RSA_SIGN);
1850 have_ecc_cert = ssl_has_key(s, SSL_PKEY_ECC);
1851 mask_k = 0;
1852 mask_a = 0;
1853
1854 if (rsa_enc) {
1855 mask_k |= SSL_kRSA;
1856 }
1857 if (dh_tmp) {
1858 mask_k |= SSL_kDHE;
1859 }
1860 if (rsa_enc || rsa_sign) {
1861 mask_a |= SSL_aRSA;
1862 }
1863
1864 /* An ECC certificate may be usable for ECDSA cipher suites depending on the
1865 * key usage extension and on the client's curve preferences. */
1866 if (have_ecc_cert) {
1867 x = c->pkeys[SSL_PKEY_ECC].x509;
1868 /* This call populates extension flags (ex_flags). */
1869 X509_check_purpose(x, -1, 0);
1870 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE)
1871 ? (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)
1872 : 1;
1873 if (!tls1_check_ec_cert(s, x)) {
1874 ecdsa_ok = 0;
1875 }
1876 if (ecdsa_ok) {
1877 mask_a |= SSL_aECDSA;
1878 }
1879 }
1880
1881 /* If we are considering an ECC cipher suite that uses an ephemeral EC
1882 * key, check it. */
1883 if (tls1_check_ec_tmp_key(s)) {
1884 mask_k |= SSL_kECDHE;
1885 }
1886
1887 /* PSK requires a server callback. */
1888 if (s->psk_server_callback != NULL) {
1889 mask_k |= SSL_kPSK;
1890 mask_a |= SSL_aPSK;
1891 }
1892
1893 *out_mask_k = mask_k;
1894 *out_mask_a = mask_a;
1895 }
1896
1897 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1898 #define ku_reject(x, usage) \
1899 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1900
ssl_check_srvr_ecc_cert_and_alg(X509 * x,SSL * s)1901 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) {
1902 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
1903 uint32_t alg_a = cs->algorithm_auth;
1904 int signature_nid = 0, md_nid = 0, pk_nid = 0;
1905
1906 /* This call populates the ex_flags field correctly */
1907 X509_check_purpose(x, -1, 0);
1908 if (x->sig_alg && x->sig_alg->algorithm) {
1909 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1910 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
1911 }
1912 if (alg_a & SSL_aECDSA) {
1913 /* key usage, if present, must allow signing */
1914 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
1915 OPENSSL_PUT_ERROR(SSL, ssl_check_srvr_ecc_cert_and_alg,
1916 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
1917 return 0;
1918 }
1919 }
1920
1921 return 1; /* all checks are ok */
1922 }
1923
ssl_get_server_cert_index(const SSL * s)1924 static int ssl_get_server_cert_index(const SSL *s) {
1925 int idx;
1926 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
1927 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) {
1928 idx = SSL_PKEY_RSA_SIGN;
1929 }
1930 if (idx == -1) {
1931 OPENSSL_PUT_ERROR(SSL, ssl_get_server_cert_index, ERR_R_INTERNAL_ERROR);
1932 }
1933 return idx;
1934 }
1935
ssl_get_server_send_pkey(const SSL * s)1936 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) {
1937 int i = ssl_get_server_cert_index(s);
1938
1939 /* This may or may not be an error. */
1940 if (i < 0) {
1941 return NULL;
1942 }
1943
1944 /* May be NULL. */
1945 return &s->cert->pkeys[i];
1946 }
1947
ssl_get_sign_pkey(SSL * s,const SSL_CIPHER * cipher)1948 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher) {
1949 uint32_t alg_a = cipher->algorithm_auth;
1950 CERT *c = s->cert;
1951 int idx = -1;
1952
1953 if (alg_a & SSL_aRSA) {
1954 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) {
1955 idx = SSL_PKEY_RSA_SIGN;
1956 } else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) {
1957 idx = SSL_PKEY_RSA_ENC;
1958 }
1959 } else if ((alg_a & SSL_aECDSA) &&
1960 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) {
1961 idx = SSL_PKEY_ECC;
1962 }
1963
1964 if (idx == -1) {
1965 OPENSSL_PUT_ERROR(SSL, ssl_get_sign_pkey, ERR_R_INTERNAL_ERROR);
1966 return NULL;
1967 }
1968
1969 return c->pkeys[idx].privatekey;
1970 }
1971
ssl_update_cache(SSL * s,int mode)1972 void ssl_update_cache(SSL *s, int mode) {
1973 /* Never cache sessions with empty session IDs. */
1974 if (s->session->session_id_length == 0) {
1975 return;
1976 }
1977
1978 SSL_CTX *ctx = s->initial_ctx;
1979 if ((ctx->session_cache_mode & mode) == mode && !s->hit &&
1980 ((ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) ||
1981 SSL_CTX_add_session(ctx, s->session)) &&
1982 ctx->new_session_cb != NULL) {
1983 /* Note: |new_session_cb| is called whether the internal session cache is
1984 * used or not. */
1985 if (!ctx->new_session_cb(s, SSL_SESSION_up_ref(s->session))) {
1986 SSL_SESSION_free(s->session);
1987 }
1988 }
1989
1990 if (!(ctx->session_cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) &&
1991 !(ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) &&
1992 (ctx->session_cache_mode & mode) == mode) {
1993 /* Automatically flush the internal session cache every 255 connections. */
1994 int flush_cache = 0;
1995 CRYPTO_MUTEX_lock_write(&ctx->lock);
1996 ctx->handshakes_since_cache_flush++;
1997 if (ctx->handshakes_since_cache_flush >= 255) {
1998 flush_cache = 1;
1999 ctx->handshakes_since_cache_flush = 0;
2000 }
2001 CRYPTO_MUTEX_unlock(&ctx->lock);
2002
2003 if (flush_cache) {
2004 SSL_CTX_flush_sessions(ctx, (unsigned long)time(NULL));
2005 }
2006 }
2007 }
2008
SSL_get_error(const SSL * s,int ret_code)2009 int SSL_get_error(const SSL *s, int ret_code) {
2010 int reason;
2011 uint32_t err;
2012 BIO *bio;
2013
2014 if (ret_code > 0) {
2015 return SSL_ERROR_NONE;
2016 }
2017
2018 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2019 * where we do encode the error */
2020 err = ERR_peek_error();
2021 if (err != 0) {
2022 if (ERR_GET_LIB(err) == ERR_LIB_SYS) {
2023 return SSL_ERROR_SYSCALL;
2024 }
2025 return SSL_ERROR_SSL;
2026 }
2027
2028 if (ret_code == 0) {
2029 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2030 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) {
2031 /* The socket was cleanly shut down with a close_notify. */
2032 return SSL_ERROR_ZERO_RETURN;
2033 }
2034 /* An EOF was observed which violates the protocol, and the underlying
2035 * transport does not participate in the error queue. Bubble up to the
2036 * caller. */
2037 return SSL_ERROR_SYSCALL;
2038 }
2039
2040 if (SSL_want_session(s)) {
2041 return SSL_ERROR_PENDING_SESSION;
2042 }
2043
2044 if (SSL_want_certificate(s)) {
2045 return SSL_ERROR_PENDING_CERTIFICATE;
2046 }
2047
2048 if (SSL_want_read(s)) {
2049 bio = SSL_get_rbio(s);
2050 if (BIO_should_read(bio)) {
2051 return SSL_ERROR_WANT_READ;
2052 }
2053
2054 if (BIO_should_write(bio)) {
2055 /* This one doesn't make too much sense ... We never try to write to the
2056 * rbio, and an application program where rbio and wbio are separate
2057 * couldn't even know what it should wait for. However if we ever set
2058 * s->rwstate incorrectly (so that we have SSL_want_read(s) instead of
2059 * SSL_want_write(s)) and rbio and wbio *are* the same, this test works
2060 * around that bug; so it might be safer to keep it. */
2061 return SSL_ERROR_WANT_WRITE;
2062 }
2063
2064 if (BIO_should_io_special(bio)) {
2065 reason = BIO_get_retry_reason(bio);
2066 if (reason == BIO_RR_CONNECT) {
2067 return SSL_ERROR_WANT_CONNECT;
2068 }
2069
2070 if (reason == BIO_RR_ACCEPT) {
2071 return SSL_ERROR_WANT_ACCEPT;
2072 }
2073
2074 return SSL_ERROR_SYSCALL; /* unknown */
2075 }
2076 }
2077
2078 if (SSL_want_write(s)) {
2079 bio = SSL_get_wbio(s);
2080 if (BIO_should_write(bio)) {
2081 return SSL_ERROR_WANT_WRITE;
2082 }
2083
2084 if (BIO_should_read(bio)) {
2085 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2086 return SSL_ERROR_WANT_READ;
2087 }
2088
2089 if (BIO_should_io_special(bio)) {
2090 reason = BIO_get_retry_reason(bio);
2091 if (reason == BIO_RR_CONNECT) {
2092 return SSL_ERROR_WANT_CONNECT;
2093 }
2094
2095 if (reason == BIO_RR_ACCEPT) {
2096 return SSL_ERROR_WANT_ACCEPT;
2097 }
2098
2099 return SSL_ERROR_SYSCALL;
2100 }
2101 }
2102
2103 if (SSL_want_x509_lookup(s)) {
2104 return SSL_ERROR_WANT_X509_LOOKUP;
2105 }
2106
2107 if (SSL_want_channel_id_lookup(s)) {
2108 return SSL_ERROR_WANT_CHANNEL_ID_LOOKUP;
2109 }
2110
2111 return SSL_ERROR_SYSCALL;
2112 }
2113
SSL_do_handshake(SSL * s)2114 int SSL_do_handshake(SSL *s) {
2115 int ret = 1;
2116
2117 if (s->handshake_func == NULL) {
2118 OPENSSL_PUT_ERROR(SSL, SSL_do_handshake, SSL_R_CONNECTION_TYPE_NOT_SET);
2119 return -1;
2120 }
2121
2122 if (SSL_in_init(s)) {
2123 ret = s->handshake_func(s);
2124 }
2125 return ret;
2126 }
2127
SSL_set_accept_state(SSL * ssl)2128 void SSL_set_accept_state(SSL *ssl) {
2129 ssl->server = 1;
2130 ssl->shutdown = 0;
2131 ssl->state = SSL_ST_ACCEPT;
2132 ssl->handshake_func = ssl->method->ssl_accept;
2133 /* clear the current cipher */
2134 ssl_clear_cipher_ctx(ssl);
2135 }
2136
SSL_set_connect_state(SSL * ssl)2137 void SSL_set_connect_state(SSL *ssl) {
2138 ssl->server = 0;
2139 ssl->shutdown = 0;
2140 ssl->state = SSL_ST_CONNECT;
2141 ssl->handshake_func = ssl->method->ssl_connect;
2142 /* clear the current cipher */
2143 ssl_clear_cipher_ctx(ssl);
2144 }
2145
ssl_get_version(int version)2146 static const char *ssl_get_version(int version) {
2147 switch (version) {
2148 case TLS1_2_VERSION:
2149 return "TLSv1.2";
2150
2151 case TLS1_1_VERSION:
2152 return "TLSv1.1";
2153
2154 case TLS1_VERSION:
2155 return "TLSv1";
2156
2157 case SSL3_VERSION:
2158 return "SSLv3";
2159
2160 case DTLS1_VERSION:
2161 return "DTLSv1";
2162
2163 case DTLS1_2_VERSION:
2164 return "DTLSv1.2";
2165
2166 default:
2167 return "unknown";
2168 }
2169 }
2170
SSL_get_version(const SSL * s)2171 const char *SSL_get_version(const SSL *s) {
2172 return ssl_get_version(s->version);
2173 }
2174
SSL_SESSION_get_version(const SSL_SESSION * sess)2175 const char *SSL_SESSION_get_version(const SSL_SESSION *sess) {
2176 return ssl_get_version(sess->ssl_version);
2177 }
2178
ssl_clear_cipher_ctx(SSL * s)2179 void ssl_clear_cipher_ctx(SSL *s) {
2180 SSL_AEAD_CTX_free(s->aead_read_ctx);
2181 s->aead_read_ctx = NULL;
2182 SSL_AEAD_CTX_free(s->aead_write_ctx);
2183 s->aead_write_ctx = NULL;
2184 }
2185
SSL_get_certificate(const SSL * s)2186 X509 *SSL_get_certificate(const SSL *s) {
2187 if (s->cert != NULL) {
2188 return s->cert->key->x509;
2189 }
2190
2191 return NULL;
2192 }
2193
SSL_get_privatekey(const SSL * s)2194 EVP_PKEY *SSL_get_privatekey(const SSL *s) {
2195 if (s->cert != NULL) {
2196 return s->cert->key->privatekey;
2197 }
2198
2199 return NULL;
2200 }
2201
SSL_CTX_get0_certificate(const SSL_CTX * ctx)2202 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) {
2203 if (ctx->cert != NULL) {
2204 return ctx->cert->key->x509;
2205 }
2206
2207 return NULL;
2208 }
2209
SSL_CTX_get0_privatekey(const SSL_CTX * ctx)2210 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) {
2211 if (ctx->cert != NULL) {
2212 return ctx->cert->key->privatekey;
2213 }
2214
2215 return NULL;
2216 }
2217
SSL_get_current_cipher(const SSL * s)2218 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) {
2219 if (s->aead_write_ctx == NULL) {
2220 return NULL;
2221 }
2222 return s->aead_write_ctx->cipher;
2223 }
2224
SSL_get_current_compression(SSL * s)2225 const void *SSL_get_current_compression(SSL *s) { return NULL; }
2226
SSL_get_current_expansion(SSL * s)2227 const void *SSL_get_current_expansion(SSL *s) { return NULL; }
2228
ssl_init_wbio_buffer(SSL * s,int push)2229 int ssl_init_wbio_buffer(SSL *s, int push) {
2230 BIO *bbio;
2231
2232 if (s->bbio == NULL) {
2233 bbio = BIO_new(BIO_f_buffer());
2234 if (bbio == NULL) {
2235 return 0;
2236 }
2237 s->bbio = bbio;
2238 } else {
2239 bbio = s->bbio;
2240 if (s->bbio == s->wbio) {
2241 s->wbio = BIO_pop(s->wbio);
2242 }
2243 }
2244
2245 BIO_reset(bbio);
2246 if (!BIO_set_read_buffer_size(bbio, 1)) {
2247 OPENSSL_PUT_ERROR(SSL, ssl_init_wbio_buffer, ERR_R_BUF_LIB);
2248 return 0;
2249 }
2250
2251 if (push) {
2252 if (s->wbio != bbio) {
2253 s->wbio = BIO_push(bbio, s->wbio);
2254 }
2255 } else {
2256 if (s->wbio == bbio) {
2257 s->wbio = BIO_pop(bbio);
2258 }
2259 }
2260
2261 return 1;
2262 }
2263
ssl_free_wbio_buffer(SSL * s)2264 void ssl_free_wbio_buffer(SSL *s) {
2265 if (s->bbio == NULL) {
2266 return;
2267 }
2268
2269 if (s->bbio == s->wbio) {
2270 /* remove buffering */
2271 s->wbio = BIO_pop(s->wbio);
2272 }
2273
2274 BIO_free(s->bbio);
2275 s->bbio = NULL;
2276 }
2277
SSL_CTX_set_quiet_shutdown(SSL_CTX * ctx,int mode)2278 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) {
2279 ctx->quiet_shutdown = mode;
2280 }
2281
SSL_CTX_get_quiet_shutdown(const SSL_CTX * ctx)2282 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) {
2283 return ctx->quiet_shutdown;
2284 }
2285
SSL_set_quiet_shutdown(SSL * s,int mode)2286 void SSL_set_quiet_shutdown(SSL *s, int mode) { s->quiet_shutdown = mode; }
2287
SSL_get_quiet_shutdown(const SSL * s)2288 int SSL_get_quiet_shutdown(const SSL *s) { return s->quiet_shutdown; }
2289
SSL_set_shutdown(SSL * s,int mode)2290 void SSL_set_shutdown(SSL *s, int mode) { s->shutdown = mode; }
2291
SSL_get_shutdown(const SSL * s)2292 int SSL_get_shutdown(const SSL *s) { return s->shutdown; }
2293
SSL_version(const SSL * s)2294 int SSL_version(const SSL *s) { return s->version; }
2295
SSL_get_SSL_CTX(const SSL * ssl)2296 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) { return ssl->ctx; }
2297
SSL_set_SSL_CTX(SSL * ssl,SSL_CTX * ctx)2298 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) {
2299 if (ssl->ctx == ctx) {
2300 return ssl->ctx;
2301 }
2302
2303 if (ctx == NULL) {
2304 ctx = ssl->initial_ctx;
2305 }
2306
2307 ssl_cert_free(ssl->cert);
2308 ssl->cert = ssl_cert_dup(ctx->cert);
2309
2310 CRYPTO_refcount_inc(&ctx->references);
2311 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2312 ssl->ctx = ctx;
2313
2314 ssl->sid_ctx_length = ctx->sid_ctx_length;
2315 assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
2316 memcpy(ssl->sid_ctx, ctx->sid_ctx, sizeof(ssl->sid_ctx));
2317
2318 return ssl->ctx;
2319 }
2320
SSL_CTX_set_default_verify_paths(SSL_CTX * ctx)2321 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) {
2322 return X509_STORE_set_default_paths(ctx->cert_store);
2323 }
2324
SSL_CTX_load_verify_locations(SSL_CTX * ctx,const char * CAfile,const char * CApath)2325 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2326 const char *CApath) {
2327 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
2328 }
2329
SSL_set_info_callback(SSL * ssl,void (* cb)(const SSL * ssl,int type,int val))2330 void SSL_set_info_callback(SSL *ssl,
2331 void (*cb)(const SSL *ssl, int type, int val)) {
2332 ssl->info_callback = cb;
2333 }
2334
SSL_get_info_callback(const SSL * ssl)2335 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/, int /*type*/,
2336 int /*val*/) {
2337 return ssl->info_callback;
2338 }
2339
SSL_state(const SSL * ssl)2340 int SSL_state(const SSL *ssl) { return ssl->state; }
2341
SSL_set_state(SSL * ssl,int state)2342 void SSL_set_state(SSL *ssl, int state) { }
2343
SSL_set_verify_result(SSL * ssl,long arg)2344 void SSL_set_verify_result(SSL *ssl, long arg) { ssl->verify_result = arg; }
2345
SSL_get_verify_result(const SSL * ssl)2346 long SSL_get_verify_result(const SSL *ssl) { return ssl->verify_result; }
2347
SSL_get_ex_new_index(long argl,void * argp,CRYPTO_EX_new * new_func,CRYPTO_EX_dup * dup_func,CRYPTO_EX_free * free_func)2348 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
2349 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) {
2350 int index;
2351 if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl, &index, argl, argp,
2352 new_func, dup_func, free_func)) {
2353 return -1;
2354 }
2355 return index;
2356 }
2357
SSL_set_ex_data(SSL * s,int idx,void * arg)2358 int SSL_set_ex_data(SSL *s, int idx, void *arg) {
2359 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
2360 }
2361
SSL_get_ex_data(const SSL * s,int idx)2362 void *SSL_get_ex_data(const SSL *s, int idx) {
2363 return CRYPTO_get_ex_data(&s->ex_data, idx);
2364 }
2365
SSL_CTX_get_ex_new_index(long argl,void * argp,CRYPTO_EX_new * new_func,CRYPTO_EX_dup * dup_func,CRYPTO_EX_free * free_func)2366 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
2367 CRYPTO_EX_dup *dup_func,
2368 CRYPTO_EX_free *free_func) {
2369 int index;
2370 if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl_ctx, &index, argl, argp,
2371 new_func, dup_func, free_func)) {
2372 return -1;
2373 }
2374 return index;
2375 }
2376
SSL_CTX_set_ex_data(SSL_CTX * s,int idx,void * arg)2377 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) {
2378 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
2379 }
2380
SSL_CTX_get_ex_data(const SSL_CTX * s,int idx)2381 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) {
2382 return CRYPTO_get_ex_data(&s->ex_data, idx);
2383 }
2384
SSL_CTX_get_cert_store(const SSL_CTX * ctx)2385 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) {
2386 return ctx->cert_store;
2387 }
2388
SSL_CTX_set_cert_store(SSL_CTX * ctx,X509_STORE * store)2389 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) {
2390 X509_STORE_free(ctx->cert_store);
2391 ctx->cert_store = store;
2392 }
2393
SSL_want(const SSL * s)2394 int SSL_want(const SSL *s) { return s->rwstate; }
2395
SSL_CTX_set_tmp_rsa_callback(SSL_CTX * ctx,RSA * (* cb)(SSL * ssl,int is_export,int keylength))2396 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
2397 RSA *(*cb)(SSL *ssl, int is_export,
2398 int keylength)) {
2399 }
2400
SSL_set_tmp_rsa_callback(SSL * ssl,RSA * (* cb)(SSL * ssl,int is_export,int keylength))2401 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
2402 int keylength)) {
2403 }
2404
SSL_CTX_set_tmp_dh_callback(SSL_CTX * ctx,DH * (* callback)(SSL * ssl,int is_export,int keylength))2405 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
2406 DH *(*callback)(SSL *ssl, int is_export,
2407 int keylength)) {
2408 ctx->cert->dh_tmp_cb = callback;
2409 }
2410
SSL_set_tmp_dh_callback(SSL * ssl,DH * (* callback)(SSL * ssl,int is_export,int keylength))2411 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*callback)(SSL *ssl, int is_export,
2412 int keylength)) {
2413 ssl->cert->dh_tmp_cb = callback;
2414 }
2415
SSL_CTX_set_tmp_ecdh_callback(SSL_CTX * ctx,EC_KEY * (* callback)(SSL * ssl,int is_export,int keylength))2416 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
2417 EC_KEY *(*callback)(SSL *ssl, int is_export,
2418 int keylength)) {
2419 ctx->cert->ecdh_tmp_cb = callback;
2420 }
2421
SSL_set_tmp_ecdh_callback(SSL * ssl,EC_KEY * (* callback)(SSL * ssl,int is_export,int keylength))2422 void SSL_set_tmp_ecdh_callback(SSL *ssl,
2423 EC_KEY *(*callback)(SSL *ssl, int is_export,
2424 int keylength)) {
2425 ssl->cert->ecdh_tmp_cb = callback;
2426 }
2427
SSL_CTX_use_psk_identity_hint(SSL_CTX * ctx,const char * identity_hint)2428 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) {
2429 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
2430 OPENSSL_PUT_ERROR(SSL, SSL_CTX_use_psk_identity_hint,
2431 SSL_R_DATA_LENGTH_TOO_LONG);
2432 return 0;
2433 }
2434
2435 OPENSSL_free(ctx->psk_identity_hint);
2436
2437 if (identity_hint != NULL) {
2438 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2439 if (ctx->psk_identity_hint == NULL) {
2440 return 0;
2441 }
2442 } else {
2443 ctx->psk_identity_hint = NULL;
2444 }
2445
2446 return 1;
2447 }
2448
SSL_use_psk_identity_hint(SSL * s,const char * identity_hint)2449 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) {
2450 if (s == NULL) {
2451 return 0;
2452 }
2453
2454 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
2455 OPENSSL_PUT_ERROR(SSL, SSL_use_psk_identity_hint,
2456 SSL_R_DATA_LENGTH_TOO_LONG);
2457 return 0;
2458 }
2459
2460 /* Clear currently configured hint, if any. */
2461 OPENSSL_free(s->psk_identity_hint);
2462 s->psk_identity_hint = NULL;
2463
2464 if (identity_hint != NULL) {
2465 s->psk_identity_hint = BUF_strdup(identity_hint);
2466 if (s->psk_identity_hint == NULL) {
2467 return 0;
2468 }
2469 }
2470
2471 return 1;
2472 }
2473
SSL_get_psk_identity_hint(const SSL * s)2474 const char *SSL_get_psk_identity_hint(const SSL *s) {
2475 if (s == NULL) {
2476 return NULL;
2477 }
2478 return s->psk_identity_hint;
2479 }
2480
SSL_get_psk_identity(const SSL * s)2481 const char *SSL_get_psk_identity(const SSL *s) {
2482 if (s == NULL || s->session == NULL) {
2483 return NULL;
2484 }
2485
2486 return s->session->psk_identity;
2487 }
2488
SSL_set_psk_client_callback(SSL * s,unsigned int (* cb)(SSL * ssl,const char * hint,char * identity,unsigned int max_identity_len,uint8_t * psk,unsigned int max_psk_len))2489 void SSL_set_psk_client_callback(
2490 SSL *s, unsigned int (*cb)(SSL *ssl, const char *hint, char *identity,
2491 unsigned int max_identity_len, uint8_t *psk,
2492 unsigned int max_psk_len)) {
2493 s->psk_client_callback = cb;
2494 }
2495
SSL_CTX_set_psk_client_callback(SSL_CTX * ctx,unsigned int (* cb)(SSL * ssl,const char * hint,char * identity,unsigned int max_identity_len,uint8_t * psk,unsigned int max_psk_len))2496 void SSL_CTX_set_psk_client_callback(
2497 SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, const char *hint, char *identity,
2498 unsigned int max_identity_len,
2499 uint8_t *psk, unsigned int max_psk_len)) {
2500 ctx->psk_client_callback = cb;
2501 }
2502
SSL_set_psk_server_callback(SSL * s,unsigned int (* cb)(SSL * ssl,const char * identity,uint8_t * psk,unsigned int max_psk_len))2503 void SSL_set_psk_server_callback(
2504 SSL *s, unsigned int (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
2505 unsigned int max_psk_len)) {
2506 s->psk_server_callback = cb;
2507 }
2508
SSL_CTX_set_psk_server_callback(SSL_CTX * ctx,unsigned int (* cb)(SSL * ssl,const char * identity,uint8_t * psk,unsigned int max_psk_len))2509 void SSL_CTX_set_psk_server_callback(
2510 SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, const char *identity,
2511 uint8_t *psk, unsigned int max_psk_len)) {
2512 ctx->psk_server_callback = cb;
2513 }
2514
SSL_CTX_set_min_version(SSL_CTX * ctx,uint16_t version)2515 void SSL_CTX_set_min_version(SSL_CTX *ctx, uint16_t version) {
2516 ctx->min_version = version;
2517 }
2518
SSL_CTX_set_max_version(SSL_CTX * ctx,uint16_t version)2519 void SSL_CTX_set_max_version(SSL_CTX *ctx, uint16_t version) {
2520 ctx->max_version = version;
2521 }
2522
SSL_set_min_version(SSL * ssl,uint16_t version)2523 void SSL_set_min_version(SSL *ssl, uint16_t version) {
2524 ssl->min_version = version;
2525 }
2526
SSL_set_max_version(SSL * ssl,uint16_t version)2527 void SSL_set_max_version(SSL *ssl, uint16_t version) {
2528 ssl->max_version = version;
2529 }
2530
SSL_CTX_set_msg_callback(SSL_CTX * ctx,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))2531 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
2532 void (*cb)(int write_p, int version,
2533 int content_type, const void *buf,
2534 size_t len, SSL *ssl, void *arg)) {
2535 ctx->msg_callback = cb;
2536 }
2537
SSL_CTX_set_msg_callback_arg(SSL_CTX * ctx,void * arg)2538 void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg) {
2539 ctx->msg_callback_arg = arg;
2540 }
2541
SSL_set_msg_callback(SSL * ssl,void (* cb)(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg))2542 void SSL_set_msg_callback(SSL *ssl,
2543 void (*cb)(int write_p, int version, int content_type,
2544 const void *buf, size_t len, SSL *ssl,
2545 void *arg)) {
2546 ssl->msg_callback = cb;
2547 }
2548
SSL_set_msg_callback_arg(SSL * ssl,void * arg)2549 void SSL_set_msg_callback_arg(SSL *ssl, void *arg) {
2550 ssl->msg_callback_arg = arg;
2551 }
2552
SSL_CTX_set_keylog_bio(SSL_CTX * ctx,BIO * keylog_bio)2553 void SSL_CTX_set_keylog_bio(SSL_CTX *ctx, BIO *keylog_bio) {
2554 BIO_free(ctx->keylog_bio);
2555 ctx->keylog_bio = keylog_bio;
2556 }
2557
cbb_add_hex(CBB * cbb,const uint8_t * in,size_t in_len)2558 static int cbb_add_hex(CBB *cbb, const uint8_t *in, size_t in_len) {
2559 static const char hextable[] = "0123456789abcdef";
2560 uint8_t *out;
2561 size_t i;
2562
2563 if (!CBB_add_space(cbb, &out, in_len * 2)) {
2564 return 0;
2565 }
2566
2567 for (i = 0; i < in_len; i++) {
2568 *(out++) = (uint8_t)hextable[in[i] >> 4];
2569 *(out++) = (uint8_t)hextable[in[i] & 0xf];
2570 }
2571
2572 return 1;
2573 }
2574
ssl_ctx_log_rsa_client_key_exchange(SSL_CTX * ctx,const uint8_t * encrypted_premaster,size_t encrypted_premaster_len,const uint8_t * premaster,size_t premaster_len)2575 int ssl_ctx_log_rsa_client_key_exchange(SSL_CTX *ctx,
2576 const uint8_t *encrypted_premaster,
2577 size_t encrypted_premaster_len,
2578 const uint8_t *premaster,
2579 size_t premaster_len) {
2580 BIO *bio = ctx->keylog_bio;
2581 CBB cbb;
2582 uint8_t *out;
2583 size_t out_len;
2584 int ret;
2585
2586 if (bio == NULL) {
2587 return 1;
2588 }
2589
2590 if (encrypted_premaster_len < 8) {
2591 OPENSSL_PUT_ERROR(SSL, ssl_ctx_log_rsa_client_key_exchange,
2592 ERR_R_INTERNAL_ERROR);
2593 return 0;
2594 }
2595
2596 if (!CBB_init(&cbb, 4 + 16 + 1 + premaster_len * 2 + 1)) {
2597 return 0;
2598 }
2599
2600 if (!CBB_add_bytes(&cbb, (const uint8_t *)"RSA ", 4) ||
2601 /* Only the first 8 bytes of the encrypted premaster secret are
2602 * logged. */
2603 !cbb_add_hex(&cbb, encrypted_premaster, 8) ||
2604 !CBB_add_bytes(&cbb, (const uint8_t *)" ", 1) ||
2605 !cbb_add_hex(&cbb, premaster, premaster_len) ||
2606 !CBB_add_bytes(&cbb, (const uint8_t *)"\n", 1) ||
2607 !CBB_finish(&cbb, &out, &out_len)) {
2608 CBB_cleanup(&cbb);
2609 return 0;
2610 }
2611
2612 CRYPTO_MUTEX_lock_write(&ctx->lock);
2613 ret = BIO_write(bio, out, out_len) >= 0 && BIO_flush(bio);
2614 CRYPTO_MUTEX_unlock(&ctx->lock);
2615
2616 OPENSSL_free(out);
2617 return ret;
2618 }
2619
ssl_ctx_log_master_secret(SSL_CTX * ctx,const uint8_t * client_random,size_t client_random_len,const uint8_t * master,size_t master_len)2620 int ssl_ctx_log_master_secret(SSL_CTX *ctx, const uint8_t *client_random,
2621 size_t client_random_len, const uint8_t *master,
2622 size_t master_len) {
2623 BIO *bio = ctx->keylog_bio;
2624 CBB cbb;
2625 uint8_t *out;
2626 size_t out_len;
2627 int ret;
2628
2629 if (bio == NULL) {
2630 return 1;
2631 }
2632
2633 if (client_random_len != 32) {
2634 OPENSSL_PUT_ERROR(SSL, ssl_ctx_log_master_secret, ERR_R_INTERNAL_ERROR);
2635 return 0;
2636 }
2637
2638 if (!CBB_init(&cbb, 14 + 64 + 1 + master_len * 2 + 1)) {
2639 return 0;
2640 }
2641
2642 if (!CBB_add_bytes(&cbb, (const uint8_t *)"CLIENT_RANDOM ", 14) ||
2643 !cbb_add_hex(&cbb, client_random, 32) ||
2644 !CBB_add_bytes(&cbb, (const uint8_t *)" ", 1) ||
2645 !cbb_add_hex(&cbb, master, master_len) ||
2646 !CBB_add_bytes(&cbb, (const uint8_t *)"\n", 1) ||
2647 !CBB_finish(&cbb, &out, &out_len)) {
2648 CBB_cleanup(&cbb);
2649 return 0;
2650 }
2651
2652 CRYPTO_MUTEX_lock_write(&ctx->lock);
2653 ret = BIO_write(bio, out, out_len) >= 0 && BIO_flush(bio);
2654 CRYPTO_MUTEX_unlock(&ctx->lock);
2655
2656 OPENSSL_free(out);
2657 return ret;
2658 }
2659
SSL_in_false_start(const SSL * s)2660 int SSL_in_false_start(const SSL *s) {
2661 return s->s3->tmp.in_false_start;
2662 }
2663
SSL_cutthrough_complete(const SSL * s)2664 int SSL_cutthrough_complete(const SSL *s) {
2665 return SSL_in_false_start(s);
2666 }
2667
SSL_get_structure_sizes(size_t * ssl_size,size_t * ssl_ctx_size,size_t * ssl_session_size)2668 void SSL_get_structure_sizes(size_t *ssl_size, size_t *ssl_ctx_size,
2669 size_t *ssl_session_size) {
2670 *ssl_size = sizeof(SSL);
2671 *ssl_ctx_size = sizeof(SSL_CTX);
2672 *ssl_session_size = sizeof(SSL_SESSION);
2673 }
2674
ssl3_can_false_start(const SSL * s)2675 int ssl3_can_false_start(const SSL *s) {
2676 const SSL_CIPHER *const cipher = SSL_get_current_cipher(s);
2677
2678 /* False Start only for TLS 1.2 with an ECDHE+AEAD cipher and ALPN or NPN. */
2679 return !SSL_IS_DTLS(s) &&
2680 SSL_version(s) >= TLS1_2_VERSION &&
2681 (s->s3->alpn_selected || s->s3->next_proto_neg_seen) &&
2682 cipher != NULL &&
2683 cipher->algorithm_mkey == SSL_kECDHE &&
2684 (cipher->algorithm_enc == SSL_AES128GCM ||
2685 cipher->algorithm_enc == SSL_AES256GCM ||
2686 cipher->algorithm_enc == SSL_CHACHA20POLY1305);
2687 }
2688
ssl3_get_enc_method(uint16_t version)2689 const SSL3_ENC_METHOD *ssl3_get_enc_method(uint16_t version) {
2690 switch (version) {
2691 case SSL3_VERSION:
2692 return &SSLv3_enc_data;
2693
2694 case TLS1_VERSION:
2695 return &TLSv1_enc_data;
2696
2697 case DTLS1_VERSION:
2698 case TLS1_1_VERSION:
2699 return &TLSv1_1_enc_data;
2700
2701 case DTLS1_2_VERSION:
2702 case TLS1_2_VERSION:
2703 return &TLSv1_2_enc_data;
2704
2705 default:
2706 return NULL;
2707 }
2708 }
2709
ssl3_get_max_server_version(const SSL * s)2710 uint16_t ssl3_get_max_server_version(const SSL *s) {
2711 uint16_t max_version;
2712
2713 if (SSL_IS_DTLS(s)) {
2714 max_version = (s->max_version != 0) ? s->max_version : DTLS1_2_VERSION;
2715 if (!(s->options & SSL_OP_NO_DTLSv1_2) && DTLS1_2_VERSION >= max_version) {
2716 return DTLS1_2_VERSION;
2717 }
2718 if (!(s->options & SSL_OP_NO_DTLSv1) && DTLS1_VERSION >= max_version) {
2719 return DTLS1_VERSION;
2720 }
2721 return 0;
2722 }
2723
2724 max_version = (s->max_version != 0) ? s->max_version : TLS1_2_VERSION;
2725 if (!(s->options & SSL_OP_NO_TLSv1_2) && TLS1_2_VERSION <= max_version) {
2726 return TLS1_2_VERSION;
2727 }
2728 if (!(s->options & SSL_OP_NO_TLSv1_1) && TLS1_1_VERSION <= max_version) {
2729 return TLS1_1_VERSION;
2730 }
2731 if (!(s->options & SSL_OP_NO_TLSv1) && TLS1_VERSION <= max_version) {
2732 return TLS1_VERSION;
2733 }
2734 if (!(s->options & SSL_OP_NO_SSLv3) && SSL3_VERSION <= max_version) {
2735 return SSL3_VERSION;
2736 }
2737 return 0;
2738 }
2739
ssl3_get_mutual_version(SSL * s,uint16_t client_version)2740 uint16_t ssl3_get_mutual_version(SSL *s, uint16_t client_version) {
2741 uint16_t version = 0;
2742
2743 if (SSL_IS_DTLS(s)) {
2744 /* Clamp client_version to max_version. */
2745 if (s->max_version != 0 && client_version < s->max_version) {
2746 client_version = s->max_version;
2747 }
2748
2749 if (client_version <= DTLS1_2_VERSION && !(s->options & SSL_OP_NO_DTLSv1_2)) {
2750 version = DTLS1_2_VERSION;
2751 } else if (client_version <= DTLS1_VERSION &&
2752 !(s->options & SSL_OP_NO_DTLSv1)) {
2753 version = DTLS1_VERSION;
2754 }
2755
2756 /* Check against min_version. */
2757 if (version != 0 && s->min_version != 0 && version > s->min_version) {
2758 return 0;
2759 }
2760 return version;
2761 } else {
2762 /* Clamp client_version to max_version. */
2763 if (s->max_version != 0 && client_version > s->max_version) {
2764 client_version = s->max_version;
2765 }
2766
2767 if (client_version >= TLS1_2_VERSION && !(s->options & SSL_OP_NO_TLSv1_2)) {
2768 version = TLS1_2_VERSION;
2769 } else if (client_version >= TLS1_1_VERSION &&
2770 !(s->options & SSL_OP_NO_TLSv1_1)) {
2771 version = TLS1_1_VERSION;
2772 } else if (client_version >= TLS1_VERSION && !(s->options & SSL_OP_NO_TLSv1)) {
2773 version = TLS1_VERSION;
2774 } else if (client_version >= SSL3_VERSION && !(s->options & SSL_OP_NO_SSLv3)) {
2775 version = SSL3_VERSION;
2776 }
2777
2778 /* Check against min_version. */
2779 if (version != 0 && s->min_version != 0 && version < s->min_version) {
2780 return 0;
2781 }
2782 return version;
2783 }
2784 }
2785
ssl3_get_max_client_version(SSL * s)2786 uint16_t ssl3_get_max_client_version(SSL *s) {
2787 uint32_t options = s->options;
2788 uint16_t version = 0;
2789
2790 /* OpenSSL's API for controlling versions entails blacklisting individual
2791 * protocols. This has two problems. First, on the client, the protocol can
2792 * only express a contiguous range of versions. Second, a library consumer
2793 * trying to set a maximum version cannot disable protocol versions that get
2794 * added in a future version of the library.
2795 *
2796 * To account for both of these, OpenSSL interprets the client-side bitmask
2797 * as a min/max range by picking the lowest contiguous non-empty range of
2798 * enabled protocols. Note that this means it is impossible to set a maximum
2799 * version of TLS 1.2 in a future-proof way.
2800 *
2801 * By this scheme, the maximum version is the lowest version V such that V is
2802 * enabled and V+1 is disabled or unimplemented. */
2803 if (SSL_IS_DTLS(s)) {
2804 if (!(options & SSL_OP_NO_DTLSv1_2)) {
2805 version = DTLS1_2_VERSION;
2806 }
2807 if (!(options & SSL_OP_NO_DTLSv1) && (options & SSL_OP_NO_DTLSv1_2)) {
2808 version = DTLS1_VERSION;
2809 }
2810 if (s->max_version != 0 && version < s->max_version) {
2811 version = s->max_version;
2812 }
2813 } else {
2814 if (!(options & SSL_OP_NO_TLSv1_2)) {
2815 version = TLS1_2_VERSION;
2816 }
2817 if (!(options & SSL_OP_NO_TLSv1_1) && (options & SSL_OP_NO_TLSv1_2)) {
2818 version = TLS1_1_VERSION;
2819 }
2820 if (!(options & SSL_OP_NO_TLSv1) && (options & SSL_OP_NO_TLSv1_1)) {
2821 version = TLS1_VERSION;
2822 }
2823 if (!(options & SSL_OP_NO_SSLv3) && (options & SSL_OP_NO_TLSv1)) {
2824 version = SSL3_VERSION;
2825 }
2826 if (s->max_version != 0 && version > s->max_version) {
2827 version = s->max_version;
2828 }
2829 }
2830
2831 return version;
2832 }
2833
ssl3_is_version_enabled(SSL * s,uint16_t version)2834 int ssl3_is_version_enabled(SSL *s, uint16_t version) {
2835 if (SSL_IS_DTLS(s)) {
2836 if (s->max_version != 0 && version < s->max_version) {
2837 return 0;
2838 }
2839 if (s->min_version != 0 && version > s->min_version) {
2840 return 0;
2841 }
2842
2843 switch (version) {
2844 case DTLS1_VERSION:
2845 return !(s->options & SSL_OP_NO_DTLSv1);
2846
2847 case DTLS1_2_VERSION:
2848 return !(s->options & SSL_OP_NO_DTLSv1_2);
2849
2850 default:
2851 return 0;
2852 }
2853 } else {
2854 if (s->max_version != 0 && version > s->max_version) {
2855 return 0;
2856 }
2857 if (s->min_version != 0 && version < s->min_version) {
2858 return 0;
2859 }
2860
2861 switch (version) {
2862 case SSL3_VERSION:
2863 return !(s->options & SSL_OP_NO_SSLv3);
2864
2865 case TLS1_VERSION:
2866 return !(s->options & SSL_OP_NO_TLSv1);
2867
2868 case TLS1_1_VERSION:
2869 return !(s->options & SSL_OP_NO_TLSv1_1);
2870
2871 case TLS1_2_VERSION:
2872 return !(s->options & SSL_OP_NO_TLSv1_2);
2873
2874 default:
2875 return 0;
2876 }
2877 }
2878 }
2879
ssl3_version_from_wire(SSL * s,uint16_t wire_version)2880 uint16_t ssl3_version_from_wire(SSL *s, uint16_t wire_version) {
2881 if (!SSL_IS_DTLS(s)) {
2882 return wire_version;
2883 }
2884
2885 uint16_t tls_version = ~wire_version;
2886 uint16_t version = tls_version + 0x0201;
2887 /* If either component overflowed, clamp it so comparisons still work. */
2888 if ((version >> 8) < (tls_version >> 8)) {
2889 version = 0xff00 | (version & 0xff);
2890 }
2891 if ((version & 0xff) < (tls_version & 0xff)) {
2892 version = (version & 0xff00) | 0xff;
2893 }
2894 /* DTLS 1.0 maps to TLS 1.1, not TLS 1.0. */
2895 if (version == TLS1_VERSION) {
2896 version = TLS1_1_VERSION;
2897 }
2898 return version;
2899 }
2900
SSL_cache_hit(SSL * s)2901 int SSL_cache_hit(SSL *s) { return s->hit; }
2902
SSL_is_server(SSL * s)2903 int SSL_is_server(SSL *s) { return s->server; }
2904
SSL_CTX_set_dos_protection_cb(SSL_CTX * ctx,int (* cb)(const struct ssl_early_callback_ctx *))2905 void SSL_CTX_set_dos_protection_cb(
2906 SSL_CTX *ctx, int (*cb)(const struct ssl_early_callback_ctx *)) {
2907 ctx->dos_protection_cb = cb;
2908 }
2909
SSL_enable_fastradio_padding(SSL * s,char on_off)2910 void SSL_enable_fastradio_padding(SSL *s, char on_off) {
2911 s->fastradio_padding = on_off;
2912 }
2913
SSL_set_reject_peer_renegotiations(SSL * s,int reject)2914 void SSL_set_reject_peer_renegotiations(SSL *s, int reject) {
2915 s->accept_peer_renegotiations = !reject;
2916 }
2917
SSL_get_rc4_state(const SSL * ssl,const RC4_KEY ** read_key,const RC4_KEY ** write_key)2918 int SSL_get_rc4_state(const SSL *ssl, const RC4_KEY **read_key,
2919 const RC4_KEY **write_key) {
2920 if (ssl->aead_read_ctx == NULL || ssl->aead_write_ctx == NULL) {
2921 return 0;
2922 }
2923
2924 return EVP_AEAD_CTX_get_rc4_state(&ssl->aead_read_ctx->ctx, read_key) &&
2925 EVP_AEAD_CTX_get_rc4_state(&ssl->aead_write_ctx->ctx, write_key);
2926 }
2927
SSL_get_tls_unique(const SSL * ssl,uint8_t * out,size_t * out_len,size_t max_out)2928 int SSL_get_tls_unique(const SSL *ssl, uint8_t *out, size_t *out_len,
2929 size_t max_out) {
2930 /* The tls-unique value is the first Finished message in the handshake, which
2931 * is the client's in a full handshake and the server's for a resumption. See
2932 * https://tools.ietf.org/html/rfc5929#section-3.1. */
2933 const uint8_t *finished = ssl->s3->previous_client_finished;
2934 size_t finished_len = ssl->s3->previous_client_finished_len;
2935 if (ssl->hit) {
2936 /* tls-unique is broken for resumed sessions unless EMS is used. */
2937 if (!ssl->session->extended_master_secret) {
2938 goto err;
2939 }
2940 finished = ssl->s3->previous_server_finished;
2941 finished_len = ssl->s3->previous_server_finished_len;
2942 }
2943
2944 if (!ssl->s3->initial_handshake_complete ||
2945 ssl->version < TLS1_VERSION) {
2946 goto err;
2947 }
2948
2949 *out_len = finished_len;
2950 if (finished_len > max_out) {
2951 *out_len = max_out;
2952 }
2953
2954 memcpy(out, finished, *out_len);
2955 return 1;
2956
2957 err:
2958 *out_len = 0;
2959 memset(out, 0, max_out);
2960 return 0;
2961 }
2962
SSL_CTX_sess_connect(const SSL_CTX * ctx)2963 int SSL_CTX_sess_connect(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_connect_good(const SSL_CTX * ctx)2964 int SSL_CTX_sess_connect_good(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_connect_renegotiate(const SSL_CTX * ctx)2965 int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_accept(const SSL_CTX * ctx)2966 int SSL_CTX_sess_accept(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_accept_renegotiate(const SSL_CTX * ctx)2967 int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_accept_good(const SSL_CTX * ctx)2968 int SSL_CTX_sess_accept_good(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_hits(const SSL_CTX * ctx)2969 int SSL_CTX_sess_hits(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_cb_hits(const SSL_CTX * ctx)2970 int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_misses(const SSL_CTX * ctx)2971 int SSL_CTX_sess_misses(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_timeouts(const SSL_CTX * ctx)2972 int SSL_CTX_sess_timeouts(const SSL_CTX *ctx) { return 0; }
SSL_CTX_sess_cache_full(const SSL_CTX * ctx)2973 int SSL_CTX_sess_cache_full(const SSL_CTX *ctx) { return 0; }
2974