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Allow provider sigalgs in SignatureAlgorithms conf
[thirdparty/openssl.git] / ssl / ssl_lib.c
1 /*
2 * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
5 *
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12 #include <stdio.h>
13 #include "ssl_local.h"
14 #include "internal/e_os.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include <openssl/trace.h>
24 #include <openssl/core_names.h>
25 #include "internal/cryptlib.h"
26 #include "internal/nelem.h"
27 #include "internal/refcount.h"
28 #include "internal/ktls.h"
29 #include "quic/quic_local.h"
30
31 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
32 unsigned char *s, size_t t, size_t *u)
33 {
34 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35 }
36
37 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
38 {
39 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
40 }
41
42 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
43 size_t s, unsigned char *t)
44 {
45 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
46 }
47
48 static int ssl_undefined_function_6(int r)
49 {
50 return ssl_undefined_function(NULL);
51 }
52
53 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
54 size_t s, const char *t, size_t u,
55 const unsigned char *v, size_t w, int x)
56 {
57 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58 }
59
60 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
61 {
62 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
63 }
64
65 const SSL3_ENC_METHOD ssl3_undef_enc_method = {
66 ssl_undefined_function_8,
67 ssl_undefined_function_3,
68 ssl_undefined_function_4,
69 ssl_undefined_function_5,
70 NULL, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL, /* server_finished_label */
73 0, /* server_finished_label_len */
74 ssl_undefined_function_6,
75 ssl_undefined_function_7,
76 };
77
78 struct ssl_async_args {
79 SSL *s;
80 void *buf;
81 size_t num;
82 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
83 union {
84 int (*func_read) (SSL *, void *, size_t, size_t *);
85 int (*func_write) (SSL *, const void *, size_t, size_t *);
86 int (*func_other) (SSL *);
87 } f;
88 };
89
90 static const struct {
91 uint8_t mtype;
92 uint8_t ord;
93 int nid;
94 } dane_mds[] = {
95 {
96 DANETLS_MATCHING_FULL, 0, NID_undef
97 },
98 {
99 DANETLS_MATCHING_2256, 1, NID_sha256
100 },
101 {
102 DANETLS_MATCHING_2512, 2, NID_sha512
103 },
104 };
105
106 static int dane_ctx_enable(struct dane_ctx_st *dctx)
107 {
108 const EVP_MD **mdevp;
109 uint8_t *mdord;
110 uint8_t mdmax = DANETLS_MATCHING_LAST;
111 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
112 size_t i;
113
114 if (dctx->mdevp != NULL)
115 return 1;
116
117 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
118 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
119
120 if (mdord == NULL || mdevp == NULL) {
121 OPENSSL_free(mdord);
122 OPENSSL_free(mdevp);
123 return 0;
124 }
125
126 /* Install default entries */
127 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
128 const EVP_MD *md;
129
130 if (dane_mds[i].nid == NID_undef ||
131 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
132 continue;
133 mdevp[dane_mds[i].mtype] = md;
134 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
135 }
136
137 dctx->mdevp = mdevp;
138 dctx->mdord = mdord;
139 dctx->mdmax = mdmax;
140
141 return 1;
142 }
143
144 static void dane_ctx_final(struct dane_ctx_st *dctx)
145 {
146 OPENSSL_free(dctx->mdevp);
147 dctx->mdevp = NULL;
148
149 OPENSSL_free(dctx->mdord);
150 dctx->mdord = NULL;
151 dctx->mdmax = 0;
152 }
153
154 static void tlsa_free(danetls_record *t)
155 {
156 if (t == NULL)
157 return;
158 OPENSSL_free(t->data);
159 EVP_PKEY_free(t->spki);
160 OPENSSL_free(t);
161 }
162
163 static void dane_final(SSL_DANE *dane)
164 {
165 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
166 dane->trecs = NULL;
167
168 OSSL_STACK_OF_X509_free(dane->certs);
169 dane->certs = NULL;
170
171 X509_free(dane->mcert);
172 dane->mcert = NULL;
173 dane->mtlsa = NULL;
174 dane->mdpth = -1;
175 dane->pdpth = -1;
176 }
177
178 /*
179 * dane_copy - Copy dane configuration, sans verification state.
180 */
181 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
182 {
183 int num;
184 int i;
185
186 if (!DANETLS_ENABLED(&from->dane))
187 return 1;
188
189 num = sk_danetls_record_num(from->dane.trecs);
190 dane_final(&to->dane);
191 to->dane.flags = from->dane.flags;
192 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
193 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
194
195 if (to->dane.trecs == NULL) {
196 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
197 return 0;
198 }
199
200 for (i = 0; i < num; ++i) {
201 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
202
203 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
204 t->selector, t->mtype, t->data, t->dlen) <= 0)
205 return 0;
206 }
207 return 1;
208 }
209
210 static int dane_mtype_set(struct dane_ctx_st *dctx,
211 const EVP_MD *md, uint8_t mtype, uint8_t ord)
212 {
213 int i;
214
215 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
216 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
217 return 0;
218 }
219
220 if (mtype > dctx->mdmax) {
221 const EVP_MD **mdevp;
222 uint8_t *mdord;
223 int n = ((int)mtype) + 1;
224
225 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
226 if (mdevp == NULL)
227 return -1;
228 dctx->mdevp = mdevp;
229
230 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
231 if (mdord == NULL)
232 return -1;
233 dctx->mdord = mdord;
234
235 /* Zero-fill any gaps */
236 for (i = dctx->mdmax + 1; i < mtype; ++i) {
237 mdevp[i] = NULL;
238 mdord[i] = 0;
239 }
240
241 dctx->mdmax = mtype;
242 }
243
244 dctx->mdevp[mtype] = md;
245 /* Coerce ordinal of disabled matching types to 0 */
246 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
247
248 return 1;
249 }
250
251 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
252 {
253 if (mtype > dane->dctx->mdmax)
254 return NULL;
255 return dane->dctx->mdevp[mtype];
256 }
257
258 static int dane_tlsa_add(SSL_DANE *dane,
259 uint8_t usage,
260 uint8_t selector,
261 uint8_t mtype, const unsigned char *data, size_t dlen)
262 {
263 danetls_record *t;
264 const EVP_MD *md = NULL;
265 int ilen = (int)dlen;
266 int i;
267 int num;
268
269 if (dane->trecs == NULL) {
270 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
271 return -1;
272 }
273
274 if (ilen < 0 || dlen != (size_t)ilen) {
275 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
276 return 0;
277 }
278
279 if (usage > DANETLS_USAGE_LAST) {
280 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
281 return 0;
282 }
283
284 if (selector > DANETLS_SELECTOR_LAST) {
285 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
286 return 0;
287 }
288
289 if (mtype != DANETLS_MATCHING_FULL) {
290 md = tlsa_md_get(dane, mtype);
291 if (md == NULL) {
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
293 return 0;
294 }
295 }
296
297 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
298 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
299 return 0;
300 }
301 if (!data) {
302 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
303 return 0;
304 }
305
306 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
307 return -1;
308
309 t->usage = usage;
310 t->selector = selector;
311 t->mtype = mtype;
312 t->data = OPENSSL_malloc(dlen);
313 if (t->data == NULL) {
314 tlsa_free(t);
315 return -1;
316 }
317 memcpy(t->data, data, dlen);
318 t->dlen = dlen;
319
320 /* Validate and cache full certificate or public key */
321 if (mtype == DANETLS_MATCHING_FULL) {
322 const unsigned char *p = data;
323 X509 *cert = NULL;
324 EVP_PKEY *pkey = NULL;
325
326 switch (selector) {
327 case DANETLS_SELECTOR_CERT:
328 if (!d2i_X509(&cert, &p, ilen) || p < data ||
329 dlen != (size_t)(p - data)) {
330 X509_free(cert);
331 tlsa_free(t);
332 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
333 return 0;
334 }
335 if (X509_get0_pubkey(cert) == NULL) {
336 X509_free(cert);
337 tlsa_free(t);
338 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
339 return 0;
340 }
341
342 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
343 /*
344 * The Full(0) certificate decodes to a seemingly valid X.509
345 * object with a plausible key, so the TLSA record is well
346 * formed. However, we don't actually need the certificate for
347 * usages PKIX-EE(1) or DANE-EE(3), because at least the EE
348 * certificate is always presented by the peer. We discard the
349 * certificate, and just use the TLSA data as an opaque blob
350 * for matching the raw presented DER octets.
351 *
352 * DO NOT FREE `t` here, it will be added to the TLSA record
353 * list below!
354 */
355 X509_free(cert);
356 break;
357 }
358
359 /*
360 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
361 * records that contain full certificates of trust-anchors that are
362 * not present in the wire chain. For usage PKIX-TA(0), we augment
363 * the chain with untrusted Full(0) certificates from DNS, in case
364 * they are missing from the chain.
365 */
366 if ((dane->certs == NULL &&
367 (dane->certs = sk_X509_new_null()) == NULL) ||
368 !sk_X509_push(dane->certs, cert)) {
369 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
370 X509_free(cert);
371 tlsa_free(t);
372 return -1;
373 }
374 break;
375
376 case DANETLS_SELECTOR_SPKI:
377 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
378 dlen != (size_t)(p - data)) {
379 EVP_PKEY_free(pkey);
380 tlsa_free(t);
381 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
382 return 0;
383 }
384
385 /*
386 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
387 * records that contain full bare keys of trust-anchors that are
388 * not present in the wire chain.
389 */
390 if (usage == DANETLS_USAGE_DANE_TA)
391 t->spki = pkey;
392 else
393 EVP_PKEY_free(pkey);
394 break;
395 }
396 }
397
398 /*-
399 * Find the right insertion point for the new record.
400 *
401 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
402 * they can be processed first, as they require no chain building, and no
403 * expiration or hostname checks. Because DANE-EE(3) is numerically
404 * largest, this is accomplished via descending sort by "usage".
405 *
406 * We also sort in descending order by matching ordinal to simplify
407 * the implementation of digest agility in the verification code.
408 *
409 * The choice of order for the selector is not significant, so we
410 * use the same descending order for consistency.
411 */
412 num = sk_danetls_record_num(dane->trecs);
413 for (i = 0; i < num; ++i) {
414 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
415
416 if (rec->usage > usage)
417 continue;
418 if (rec->usage < usage)
419 break;
420 if (rec->selector > selector)
421 continue;
422 if (rec->selector < selector)
423 break;
424 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
425 continue;
426 break;
427 }
428
429 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
430 tlsa_free(t);
431 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
432 return -1;
433 }
434 dane->umask |= DANETLS_USAGE_BIT(usage);
435
436 return 1;
437 }
438
439 /*
440 * Return 0 if there is only one version configured and it was disabled
441 * at configure time. Return 1 otherwise.
442 */
443 static int ssl_check_allowed_versions(int min_version, int max_version)
444 {
445 int minisdtls = 0, maxisdtls = 0;
446
447 /* Figure out if we're doing DTLS versions or TLS versions */
448 if (min_version == DTLS1_BAD_VER
449 || min_version >> 8 == DTLS1_VERSION_MAJOR)
450 minisdtls = 1;
451 if (max_version == DTLS1_BAD_VER
452 || max_version >> 8 == DTLS1_VERSION_MAJOR)
453 maxisdtls = 1;
454 /* A wildcard version of 0 could be DTLS or TLS. */
455 if ((minisdtls && !maxisdtls && max_version != 0)
456 || (maxisdtls && !minisdtls && min_version != 0)) {
457 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
458 return 0;
459 }
460
461 if (minisdtls || maxisdtls) {
462 /* Do DTLS version checks. */
463 if (min_version == 0)
464 /* Ignore DTLS1_BAD_VER */
465 min_version = DTLS1_VERSION;
466 if (max_version == 0)
467 max_version = DTLS1_2_VERSION;
468 #ifdef OPENSSL_NO_DTLS1_2
469 if (max_version == DTLS1_2_VERSION)
470 max_version = DTLS1_VERSION;
471 #endif
472 #ifdef OPENSSL_NO_DTLS1
473 if (min_version == DTLS1_VERSION)
474 min_version = DTLS1_2_VERSION;
475 #endif
476 /* Done massaging versions; do the check. */
477 if (0
478 #ifdef OPENSSL_NO_DTLS1
479 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
480 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
481 #endif
482 #ifdef OPENSSL_NO_DTLS1_2
483 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
484 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
485 #endif
486 )
487 return 0;
488 } else {
489 /* Regular TLS version checks. */
490 if (min_version == 0)
491 min_version = SSL3_VERSION;
492 if (max_version == 0)
493 max_version = TLS1_3_VERSION;
494 #ifdef OPENSSL_NO_TLS1_3
495 if (max_version == TLS1_3_VERSION)
496 max_version = TLS1_2_VERSION;
497 #endif
498 #ifdef OPENSSL_NO_TLS1_2
499 if (max_version == TLS1_2_VERSION)
500 max_version = TLS1_1_VERSION;
501 #endif
502 #ifdef OPENSSL_NO_TLS1_1
503 if (max_version == TLS1_1_VERSION)
504 max_version = TLS1_VERSION;
505 #endif
506 #ifdef OPENSSL_NO_TLS1
507 if (max_version == TLS1_VERSION)
508 max_version = SSL3_VERSION;
509 #endif
510 #ifdef OPENSSL_NO_SSL3
511 if (min_version == SSL3_VERSION)
512 min_version = TLS1_VERSION;
513 #endif
514 #ifdef OPENSSL_NO_TLS1
515 if (min_version == TLS1_VERSION)
516 min_version = TLS1_1_VERSION;
517 #endif
518 #ifdef OPENSSL_NO_TLS1_1
519 if (min_version == TLS1_1_VERSION)
520 min_version = TLS1_2_VERSION;
521 #endif
522 #ifdef OPENSSL_NO_TLS1_2
523 if (min_version == TLS1_2_VERSION)
524 min_version = TLS1_3_VERSION;
525 #endif
526 /* Done massaging versions; do the check. */
527 if (0
528 #ifdef OPENSSL_NO_SSL3
529 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
530 #endif
531 #ifdef OPENSSL_NO_TLS1
532 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
533 #endif
534 #ifdef OPENSSL_NO_TLS1_1
535 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
536 #endif
537 #ifdef OPENSSL_NO_TLS1_2
538 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
539 #endif
540 #ifdef OPENSSL_NO_TLS1_3
541 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
542 #endif
543 )
544 return 0;
545 }
546 return 1;
547 }
548
549 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
550 /*
551 * Define a VPROC function for HP NonStop build ssl library.
552 * This is used by platform version identification tools.
553 * Do not inline this procedure or make it static.
554 */
555 # define OPENSSL_VPROC_STRING_(x) x##_SSL
556 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
557 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
558 void OPENSSL_VPROC_FUNC(void) {}
559 #endif
560
561 int SSL_clear(SSL *s)
562 {
563 if (s->method == NULL) {
564 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
565 return 0;
566 }
567
568 return s->method->ssl_reset(s);
569 }
570
571 int ossl_ssl_connection_reset(SSL *s)
572 {
573 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
574
575 if (sc == NULL)
576 return 0;
577
578 if (ssl_clear_bad_session(sc)) {
579 SSL_SESSION_free(sc->session);
580 sc->session = NULL;
581 }
582 SSL_SESSION_free(sc->psksession);
583 sc->psksession = NULL;
584 OPENSSL_free(sc->psksession_id);
585 sc->psksession_id = NULL;
586 sc->psksession_id_len = 0;
587 sc->hello_retry_request = SSL_HRR_NONE;
588 sc->sent_tickets = 0;
589
590 sc->error = 0;
591 sc->hit = 0;
592 sc->shutdown = 0;
593
594 if (sc->renegotiate) {
595 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
596 return 0;
597 }
598
599 ossl_statem_clear(sc);
600
601 sc->version = s->method->version;
602 sc->client_version = sc->version;
603 sc->rwstate = SSL_NOTHING;
604
605 BUF_MEM_free(sc->init_buf);
606 sc->init_buf = NULL;
607 sc->first_packet = 0;
608
609 sc->key_update = SSL_KEY_UPDATE_NONE;
610 memset(sc->ext.compress_certificate_from_peer, 0,
611 sizeof(sc->ext.compress_certificate_from_peer));
612 sc->ext.compress_certificate_sent = 0;
613
614 EVP_MD_CTX_free(sc->pha_dgst);
615 sc->pha_dgst = NULL;
616
617 /* Reset DANE verification result state */
618 sc->dane.mdpth = -1;
619 sc->dane.pdpth = -1;
620 X509_free(sc->dane.mcert);
621 sc->dane.mcert = NULL;
622 sc->dane.mtlsa = NULL;
623
624 /* Clear the verification result peername */
625 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
626
627 /* Clear any shared connection state */
628 OPENSSL_free(sc->shared_sigalgs);
629 sc->shared_sigalgs = NULL;
630 sc->shared_sigalgslen = 0;
631
632 /*
633 * Check to see if we were changed into a different method, if so, revert
634 * back.
635 */
636 if (s->method != s->defltmeth) {
637 s->method->ssl_deinit(s);
638 s->method = s->defltmeth;
639 if (!s->method->ssl_init(s))
640 return 0;
641 } else {
642 if (!s->method->ssl_clear(s))
643 return 0;
644 }
645
646 if (!RECORD_LAYER_reset(&sc->rlayer))
647 return 0;
648
649 return 1;
650 }
651
652 #ifndef OPENSSL_NO_DEPRECATED_3_0
653 /** Used to change an SSL_CTXs default SSL method type */
654 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
655 {
656 STACK_OF(SSL_CIPHER) *sk;
657
658 if (IS_QUIC_CTX(ctx)) {
659 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
660 return 0;
661 }
662
663 ctx->method = meth;
664
665 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
666 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
667 return 0;
668 }
669 sk = ssl_create_cipher_list(ctx,
670 ctx->tls13_ciphersuites,
671 &(ctx->cipher_list),
672 &(ctx->cipher_list_by_id),
673 OSSL_default_cipher_list(), ctx->cert);
674 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
675 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
676 return 0;
677 }
678 return 1;
679 }
680 #endif
681
682 SSL *SSL_new(SSL_CTX *ctx)
683 {
684 if (ctx == NULL) {
685 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
686 return NULL;
687 }
688 if (ctx->method == NULL) {
689 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
690 return NULL;
691 }
692 return ctx->method->ssl_new(ctx);
693 }
694
695 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method, int type)
696 {
697 ssl->type = type;
698
699 ssl->lock = CRYPTO_THREAD_lock_new();
700 if (ssl->lock == NULL)
701 return 0;
702
703 if (!CRYPTO_NEW_REF(&ssl->references, 1)) {
704 CRYPTO_THREAD_lock_free(ssl->lock);
705 return 0;
706 }
707
708 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data)) {
709 CRYPTO_THREAD_lock_free(ssl->lock);
710 CRYPTO_FREE_REF(&ssl->references);
711 ssl->lock = NULL;
712 return 0;
713 }
714
715 SSL_CTX_up_ref(ctx);
716 ssl->ctx = ctx;
717
718 ssl->defltmeth = ssl->method = method;
719
720 return 1;
721 }
722
723 SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method)
724 {
725 SSL_CONNECTION *s;
726 SSL *ssl;
727
728 s = OPENSSL_zalloc(sizeof(*s));
729 if (s == NULL)
730 return NULL;
731
732 ssl = &s->ssl;
733 if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
734 OPENSSL_free(s);
735 s = NULL;
736 ssl = NULL;
737 goto sslerr;
738 }
739
740 RECORD_LAYER_init(&s->rlayer, s);
741
742 s->options = ctx->options;
743
744 s->dane.flags = ctx->dane.flags;
745 if (method->version == ctx->method->version) {
746 s->min_proto_version = ctx->min_proto_version;
747 s->max_proto_version = ctx->max_proto_version;
748 }
749
750 s->mode = ctx->mode;
751 s->max_cert_list = ctx->max_cert_list;
752 s->max_early_data = ctx->max_early_data;
753 s->recv_max_early_data = ctx->recv_max_early_data;
754
755 s->num_tickets = ctx->num_tickets;
756 s->pha_enabled = ctx->pha_enabled;
757
758 /* Shallow copy of the ciphersuites stack */
759 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
760 if (s->tls13_ciphersuites == NULL)
761 goto cerr;
762
763 /*
764 * Earlier library versions used to copy the pointer to the CERT, not
765 * its contents; only when setting new parameters for the per-SSL
766 * copy, ssl_cert_new would be called (and the direct reference to
767 * the per-SSL_CTX settings would be lost, but those still were
768 * indirectly accessed for various purposes, and for that reason they
769 * used to be known as s->ctx->default_cert). Now we don't look at the
770 * SSL_CTX's CERT after having duplicated it once.
771 */
772 s->cert = ssl_cert_dup(ctx->cert);
773 if (s->cert == NULL)
774 goto sslerr;
775
776 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
777 s->msg_callback = ctx->msg_callback;
778 s->msg_callback_arg = ctx->msg_callback_arg;
779 s->verify_mode = ctx->verify_mode;
780 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
781 s->rlayer.record_padding_cb = ctx->record_padding_cb;
782 s->rlayer.record_padding_arg = ctx->record_padding_arg;
783 s->rlayer.block_padding = ctx->block_padding;
784 s->sid_ctx_length = ctx->sid_ctx_length;
785 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
786 goto err;
787 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
788 s->verify_callback = ctx->default_verify_callback;
789 s->generate_session_id = ctx->generate_session_id;
790
791 s->param = X509_VERIFY_PARAM_new();
792 if (s->param == NULL)
793 goto asn1err;
794 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
795 s->quiet_shutdown = IS_QUIC_CTX(ctx) ? 0 : ctx->quiet_shutdown;
796
797 if (!IS_QUIC_CTX(ctx))
798 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
799
800 s->max_send_fragment = ctx->max_send_fragment;
801 s->split_send_fragment = ctx->split_send_fragment;
802 s->max_pipelines = ctx->max_pipelines;
803 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
804
805 s->ext.debug_cb = 0;
806 s->ext.debug_arg = NULL;
807 s->ext.ticket_expected = 0;
808 s->ext.status_type = ctx->ext.status_type;
809 s->ext.status_expected = 0;
810 s->ext.ocsp.ids = NULL;
811 s->ext.ocsp.exts = NULL;
812 s->ext.ocsp.resp = NULL;
813 s->ext.ocsp.resp_len = 0;
814 SSL_CTX_up_ref(ctx);
815 s->session_ctx = ctx;
816 if (ctx->ext.ecpointformats) {
817 s->ext.ecpointformats =
818 OPENSSL_memdup(ctx->ext.ecpointformats,
819 ctx->ext.ecpointformats_len);
820 if (!s->ext.ecpointformats) {
821 s->ext.ecpointformats_len = 0;
822 goto err;
823 }
824 s->ext.ecpointformats_len =
825 ctx->ext.ecpointformats_len;
826 }
827 if (ctx->ext.supportedgroups) {
828 s->ext.supportedgroups =
829 OPENSSL_memdup(ctx->ext.supportedgroups,
830 ctx->ext.supportedgroups_len
831 * sizeof(*ctx->ext.supportedgroups));
832 if (!s->ext.supportedgroups) {
833 s->ext.supportedgroups_len = 0;
834 goto err;
835 }
836 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
837 }
838
839 #ifndef OPENSSL_NO_NEXTPROTONEG
840 s->ext.npn = NULL;
841 #endif
842
843 if (ctx->ext.alpn != NULL) {
844 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
845 if (s->ext.alpn == NULL) {
846 s->ext.alpn_len = 0;
847 goto err;
848 }
849 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
850 s->ext.alpn_len = ctx->ext.alpn_len;
851 }
852
853 s->verified_chain = NULL;
854 s->verify_result = X509_V_OK;
855
856 s->default_passwd_callback = ctx->default_passwd_callback;
857 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
858
859 s->key_update = SSL_KEY_UPDATE_NONE;
860
861 if (!IS_QUIC_CTX(ctx)) {
862 s->allow_early_data_cb = ctx->allow_early_data_cb;
863 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
864 }
865
866 if (!method->ssl_init(ssl))
867 goto sslerr;
868
869 s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
870
871 if (!method->ssl_reset(ssl))
872 goto sslerr;
873
874 #ifndef OPENSSL_NO_PSK
875 s->psk_client_callback = ctx->psk_client_callback;
876 s->psk_server_callback = ctx->psk_server_callback;
877 #endif
878 s->psk_find_session_cb = ctx->psk_find_session_cb;
879 s->psk_use_session_cb = ctx->psk_use_session_cb;
880
881 s->async_cb = ctx->async_cb;
882 s->async_cb_arg = ctx->async_cb_arg;
883
884 s->job = NULL;
885
886 #ifndef OPENSSL_NO_COMP_ALG
887 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
888 #endif
889 if (ctx->client_cert_type != NULL) {
890 s->client_cert_type = OPENSSL_memdup(ctx->client_cert_type,
891 ctx->client_cert_type_len);
892 if (s->client_cert_type == NULL)
893 goto sslerr;
894 s->client_cert_type_len = ctx->client_cert_type_len;
895 }
896 if (ctx->server_cert_type != NULL) {
897 s->server_cert_type = OPENSSL_memdup(ctx->server_cert_type,
898 ctx->server_cert_type_len);
899 if (s->server_cert_type == NULL)
900 goto sslerr;
901 s->server_cert_type_len = ctx->server_cert_type_len;
902 }
903
904 #ifndef OPENSSL_NO_CT
905 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
906 ctx->ct_validation_callback_arg))
907 goto sslerr;
908 #endif
909
910 s->ssl_pkey_num = SSL_PKEY_NUM + ctx->sigalg_list_len;
911 return ssl;
912 cerr:
913 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
914 goto err;
915 asn1err:
916 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
917 goto err;
918 sslerr:
919 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
920 err:
921 SSL_free(ssl);
922 return NULL;
923 }
924
925 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
926 {
927 return ossl_ssl_connection_new_int(ctx, ctx->method);
928 }
929
930 int SSL_is_dtls(const SSL *s)
931 {
932 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
933
934 #ifndef OPENSSL_NO_QUIC
935 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
936 return 0;
937 #endif
938
939 if (sc == NULL)
940 return 0;
941
942 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
943 }
944
945 int SSL_is_tls(const SSL *s)
946 {
947 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
948
949 #ifndef OPENSSL_NO_QUIC
950 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
951 return 0;
952 #endif
953
954 if (sc == NULL)
955 return 0;
956
957 return SSL_CONNECTION_IS_DTLS(sc) ? 0 : 1;
958 }
959
960 int SSL_is_quic(const SSL *s)
961 {
962 #ifndef OPENSSL_NO_QUIC
963 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
964 return 1;
965 #endif
966 return 0;
967 }
968
969 int SSL_up_ref(SSL *s)
970 {
971 int i;
972
973 if (CRYPTO_UP_REF(&s->references, &i) <= 0)
974 return 0;
975
976 REF_PRINT_COUNT("SSL", s);
977 REF_ASSERT_ISNT(i < 2);
978 return ((i > 1) ? 1 : 0);
979 }
980
981 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
982 unsigned int sid_ctx_len)
983 {
984 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
985 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
986 return 0;
987 }
988 ctx->sid_ctx_length = sid_ctx_len;
989 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
990
991 return 1;
992 }
993
994 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
995 unsigned int sid_ctx_len)
996 {
997 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
998
999 if (sc == NULL)
1000 return 0;
1001
1002 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
1003 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
1004 return 0;
1005 }
1006 sc->sid_ctx_length = sid_ctx_len;
1007 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
1008
1009 return 1;
1010 }
1011
1012 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
1013 {
1014 if (!CRYPTO_THREAD_write_lock(ctx->lock))
1015 return 0;
1016 ctx->generate_session_id = cb;
1017 CRYPTO_THREAD_unlock(ctx->lock);
1018 return 1;
1019 }
1020
1021 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
1022 {
1023 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1024
1025 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
1026 return 0;
1027 sc->generate_session_id = cb;
1028 CRYPTO_THREAD_unlock(ssl->lock);
1029 return 1;
1030 }
1031
1032 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
1033 unsigned int id_len)
1034 {
1035 /*
1036 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
1037 * we can "construct" a session to give us the desired check - i.e. to
1038 * find if there's a session in the hash table that would conflict with
1039 * any new session built out of this id/id_len and the ssl_version in use
1040 * by this SSL.
1041 */
1042 SSL_SESSION r, *p;
1043 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1044
1045 if (sc == NULL || id_len > sizeof(r.session_id))
1046 return 0;
1047
1048 r.ssl_version = sc->version;
1049 r.session_id_length = id_len;
1050 memcpy(r.session_id, id, id_len);
1051
1052 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1053 return 0;
1054 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1055 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1056 return (p != NULL);
1057 }
1058
1059 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1060 {
1061 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1062 }
1063
1064 int SSL_set_purpose(SSL *s, int purpose)
1065 {
1066 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1067
1068 if (sc == NULL)
1069 return 0;
1070
1071 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1072 }
1073
1074 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1075 {
1076 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1077 }
1078
1079 int SSL_set_trust(SSL *s, int trust)
1080 {
1081 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1082
1083 if (sc == NULL)
1084 return 0;
1085
1086 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1087 }
1088
1089 int SSL_set1_host(SSL *s, const char *hostname)
1090 {
1091 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1092
1093 if (sc == NULL)
1094 return 0;
1095
1096 /* If a hostname is provided and parses as an IP address,
1097 * treat it as such. */
1098 if (hostname != NULL
1099 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1100 return 1;
1101
1102 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1103 }
1104
1105 int SSL_add1_host(SSL *s, const char *hostname)
1106 {
1107 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1108
1109 if (sc == NULL)
1110 return 0;
1111
1112 /* If a hostname is provided and parses as an IP address,
1113 * treat it as such. */
1114 if (hostname)
1115 {
1116 ASN1_OCTET_STRING *ip;
1117 char *old_ip;
1118
1119 ip = a2i_IPADDRESS(hostname);
1120 if (ip) {
1121 /* We didn't want it; only to check if it *is* an IP address */
1122 ASN1_OCTET_STRING_free(ip);
1123
1124 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1125 if (old_ip)
1126 {
1127 OPENSSL_free(old_ip);
1128 /* There can be only one IP address */
1129 return 0;
1130 }
1131
1132 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1133 }
1134 }
1135
1136 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1137 }
1138
1139 void SSL_set_hostflags(SSL *s, unsigned int flags)
1140 {
1141 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1142
1143 if (sc == NULL)
1144 return;
1145
1146 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1147 }
1148
1149 const char *SSL_get0_peername(SSL *s)
1150 {
1151 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1152
1153 if (sc == NULL)
1154 return NULL;
1155
1156 return X509_VERIFY_PARAM_get0_peername(sc->param);
1157 }
1158
1159 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1160 {
1161 return dane_ctx_enable(&ctx->dane);
1162 }
1163
1164 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1165 {
1166 unsigned long orig = ctx->dane.flags;
1167
1168 ctx->dane.flags |= flags;
1169 return orig;
1170 }
1171
1172 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1173 {
1174 unsigned long orig = ctx->dane.flags;
1175
1176 ctx->dane.flags &= ~flags;
1177 return orig;
1178 }
1179
1180 int SSL_dane_enable(SSL *s, const char *basedomain)
1181 {
1182 SSL_DANE *dane;
1183 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1184
1185 if (sc == NULL)
1186 return 0;
1187
1188 dane = &sc->dane;
1189 if (s->ctx->dane.mdmax == 0) {
1190 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1191 return 0;
1192 }
1193 if (dane->trecs != NULL) {
1194 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1195 return 0;
1196 }
1197
1198 /*
1199 * Default SNI name. This rejects empty names, while set1_host below
1200 * accepts them and disables hostname checks. To avoid side-effects with
1201 * invalid input, set the SNI name first.
1202 */
1203 if (sc->ext.hostname == NULL) {
1204 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1205 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1206 return -1;
1207 }
1208 }
1209
1210 /* Primary RFC6125 reference identifier */
1211 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1212 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1213 return -1;
1214 }
1215
1216 dane->mdpth = -1;
1217 dane->pdpth = -1;
1218 dane->dctx = &s->ctx->dane;
1219 dane->trecs = sk_danetls_record_new_null();
1220
1221 if (dane->trecs == NULL) {
1222 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1223 return -1;
1224 }
1225 return 1;
1226 }
1227
1228 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1229 {
1230 unsigned long orig;
1231 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1232
1233 if (sc == NULL)
1234 return 0;
1235
1236 orig = sc->dane.flags;
1237
1238 sc->dane.flags |= flags;
1239 return orig;
1240 }
1241
1242 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1243 {
1244 unsigned long orig;
1245 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1246
1247 if (sc == NULL)
1248 return 0;
1249
1250 orig = sc->dane.flags;
1251
1252 sc->dane.flags &= ~flags;
1253 return orig;
1254 }
1255
1256 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1257 {
1258 SSL_DANE *dane;
1259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1260
1261 if (sc == NULL)
1262 return -1;
1263
1264 dane = &sc->dane;
1265
1266 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1267 return -1;
1268 if (dane->mtlsa) {
1269 if (mcert)
1270 *mcert = dane->mcert;
1271 if (mspki)
1272 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1273 }
1274 return dane->mdpth;
1275 }
1276
1277 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1278 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1279 {
1280 SSL_DANE *dane;
1281 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1282
1283 if (sc == NULL)
1284 return -1;
1285
1286 dane = &sc->dane;
1287
1288 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1289 return -1;
1290 if (dane->mtlsa) {
1291 if (usage)
1292 *usage = dane->mtlsa->usage;
1293 if (selector)
1294 *selector = dane->mtlsa->selector;
1295 if (mtype)
1296 *mtype = dane->mtlsa->mtype;
1297 if (data)
1298 *data = dane->mtlsa->data;
1299 if (dlen)
1300 *dlen = dane->mtlsa->dlen;
1301 }
1302 return dane->mdpth;
1303 }
1304
1305 SSL_DANE *SSL_get0_dane(SSL *s)
1306 {
1307 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1308
1309 if (sc == NULL)
1310 return NULL;
1311
1312 return &sc->dane;
1313 }
1314
1315 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1316 uint8_t mtype, const unsigned char *data, size_t dlen)
1317 {
1318 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1319
1320 if (sc == NULL)
1321 return 0;
1322
1323 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1324 }
1325
1326 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1327 uint8_t ord)
1328 {
1329 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1330 }
1331
1332 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1333 {
1334 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1335 }
1336
1337 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1338 {
1339 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1340
1341 if (sc == NULL)
1342 return 0;
1343
1344 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1345 }
1346
1347 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1348 {
1349 return ctx->param;
1350 }
1351
1352 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1353 {
1354 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1355
1356 if (sc == NULL)
1357 return NULL;
1358
1359 return sc->param;
1360 }
1361
1362 void SSL_certs_clear(SSL *s)
1363 {
1364 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1365
1366 if (sc == NULL)
1367 return;
1368
1369 ssl_cert_clear_certs(sc->cert);
1370 }
1371
1372 void SSL_free(SSL *s)
1373 {
1374 int i;
1375
1376 if (s == NULL)
1377 return;
1378 CRYPTO_DOWN_REF(&s->references, &i);
1379 REF_PRINT_COUNT("SSL", s);
1380 if (i > 0)
1381 return;
1382 REF_ASSERT_ISNT(i < 0);
1383
1384 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1385
1386 if (s->method != NULL)
1387 s->method->ssl_free(s);
1388
1389 SSL_CTX_free(s->ctx);
1390 CRYPTO_THREAD_lock_free(s->lock);
1391 CRYPTO_FREE_REF(&s->references);
1392
1393 OPENSSL_free(s);
1394 }
1395
1396 void ossl_ssl_connection_free(SSL *ssl)
1397 {
1398 SSL_CONNECTION *s;
1399
1400 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1401 if (s == NULL)
1402 return;
1403
1404 X509_VERIFY_PARAM_free(s->param);
1405 dane_final(&s->dane);
1406
1407 /* Ignore return value */
1408 ssl_free_wbio_buffer(s);
1409
1410 /* Ignore return value */
1411 RECORD_LAYER_clear(&s->rlayer);
1412
1413 BUF_MEM_free(s->init_buf);
1414
1415 /* add extra stuff */
1416 sk_SSL_CIPHER_free(s->cipher_list);
1417 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1418 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1419 sk_SSL_CIPHER_free(s->peer_ciphers);
1420
1421 /* Make the next call work :-) */
1422 if (s->session != NULL) {
1423 ssl_clear_bad_session(s);
1424 SSL_SESSION_free(s->session);
1425 }
1426 SSL_SESSION_free(s->psksession);
1427 OPENSSL_free(s->psksession_id);
1428
1429 ssl_cert_free(s->cert);
1430 OPENSSL_free(s->shared_sigalgs);
1431 /* Free up if allocated */
1432
1433 OPENSSL_free(s->ext.hostname);
1434 SSL_CTX_free(s->session_ctx);
1435 OPENSSL_free(s->ext.ecpointformats);
1436 OPENSSL_free(s->ext.peer_ecpointformats);
1437 OPENSSL_free(s->ext.supportedgroups);
1438 OPENSSL_free(s->ext.peer_supportedgroups);
1439 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1440 #ifndef OPENSSL_NO_OCSP
1441 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1442 #endif
1443 #ifndef OPENSSL_NO_CT
1444 SCT_LIST_free(s->scts);
1445 OPENSSL_free(s->ext.scts);
1446 #endif
1447 OPENSSL_free(s->ext.ocsp.resp);
1448 OPENSSL_free(s->ext.alpn);
1449 OPENSSL_free(s->ext.tls13_cookie);
1450 if (s->clienthello != NULL)
1451 OPENSSL_free(s->clienthello->pre_proc_exts);
1452 OPENSSL_free(s->clienthello);
1453 OPENSSL_free(s->pha_context);
1454 EVP_MD_CTX_free(s->pha_dgst);
1455
1456 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1457 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1458
1459 OPENSSL_free(s->client_cert_type);
1460 OPENSSL_free(s->server_cert_type);
1461
1462 OSSL_STACK_OF_X509_free(s->verified_chain);
1463
1464 if (ssl->method != NULL)
1465 ssl->method->ssl_deinit(ssl);
1466
1467 ASYNC_WAIT_CTX_free(s->waitctx);
1468
1469 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1470 OPENSSL_free(s->ext.npn);
1471 #endif
1472
1473 #ifndef OPENSSL_NO_SRTP
1474 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1475 #endif
1476
1477 /*
1478 * We do this late. We want to ensure that any other references we held to
1479 * these BIOs are freed first *before* we call BIO_free_all(), because
1480 * BIO_free_all() will only free each BIO in the chain if the number of
1481 * references to the first BIO have dropped to 0
1482 */
1483 BIO_free_all(s->wbio);
1484 s->wbio = NULL;
1485 BIO_free_all(s->rbio);
1486 s->rbio = NULL;
1487 OPENSSL_free(s->s3.tmp.valid_flags);
1488 }
1489
1490 void SSL_set0_rbio(SSL *s, BIO *rbio)
1491 {
1492 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1493
1494 #ifndef OPENSSL_NO_QUIC
1495 if (IS_QUIC(s)) {
1496 ossl_quic_conn_set0_net_rbio(s, rbio);
1497 return;
1498 }
1499 #endif
1500
1501 if (sc == NULL)
1502 return;
1503
1504 BIO_free_all(sc->rbio);
1505 sc->rbio = rbio;
1506 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1507 }
1508
1509 void SSL_set0_wbio(SSL *s, BIO *wbio)
1510 {
1511 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1512
1513 #ifndef OPENSSL_NO_QUIC
1514 if (IS_QUIC(s)) {
1515 ossl_quic_conn_set0_net_wbio(s, wbio);
1516 return;
1517 }
1518 #endif
1519
1520 if (sc == NULL)
1521 return;
1522
1523 /*
1524 * If the output buffering BIO is still in place, remove it
1525 */
1526 if (sc->bbio != NULL)
1527 sc->wbio = BIO_pop(sc->wbio);
1528
1529 BIO_free_all(sc->wbio);
1530 sc->wbio = wbio;
1531
1532 /* Re-attach |bbio| to the new |wbio|. */
1533 if (sc->bbio != NULL)
1534 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1535
1536 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1537 }
1538
1539 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1540 {
1541 /*
1542 * For historical reasons, this function has many different cases in
1543 * ownership handling.
1544 */
1545
1546 /* If nothing has changed, do nothing */
1547 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1548 return;
1549
1550 /*
1551 * If the two arguments are equal then one fewer reference is granted by the
1552 * caller than we want to take
1553 */
1554 if (rbio != NULL && rbio == wbio)
1555 BIO_up_ref(rbio);
1556
1557 /*
1558 * If only the wbio is changed only adopt one reference.
1559 */
1560 if (rbio == SSL_get_rbio(s)) {
1561 SSL_set0_wbio(s, wbio);
1562 return;
1563 }
1564 /*
1565 * There is an asymmetry here for historical reasons. If only the rbio is
1566 * changed AND the rbio and wbio were originally different, then we only
1567 * adopt one reference.
1568 */
1569 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1570 SSL_set0_rbio(s, rbio);
1571 return;
1572 }
1573
1574 /* Otherwise, adopt both references. */
1575 SSL_set0_rbio(s, rbio);
1576 SSL_set0_wbio(s, wbio);
1577 }
1578
1579 BIO *SSL_get_rbio(const SSL *s)
1580 {
1581 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1582
1583 #ifndef OPENSSL_NO_QUIC
1584 if (IS_QUIC(s))
1585 return ossl_quic_conn_get_net_rbio(s);
1586 #endif
1587
1588 if (sc == NULL)
1589 return NULL;
1590
1591 return sc->rbio;
1592 }
1593
1594 BIO *SSL_get_wbio(const SSL *s)
1595 {
1596 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1597
1598 #ifndef OPENSSL_NO_QUIC
1599 if (IS_QUIC(s))
1600 return ossl_quic_conn_get_net_wbio(s);
1601 #endif
1602
1603 if (sc == NULL)
1604 return NULL;
1605
1606 if (sc->bbio != NULL) {
1607 /*
1608 * If |bbio| is active, the true caller-configured BIO is its
1609 * |next_bio|.
1610 */
1611 return BIO_next(sc->bbio);
1612 }
1613 return sc->wbio;
1614 }
1615
1616 int SSL_get_fd(const SSL *s)
1617 {
1618 return SSL_get_rfd(s);
1619 }
1620
1621 int SSL_get_rfd(const SSL *s)
1622 {
1623 int ret = -1;
1624 BIO *b, *r;
1625
1626 b = SSL_get_rbio(s);
1627 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1628 if (r != NULL)
1629 BIO_get_fd(r, &ret);
1630 return ret;
1631 }
1632
1633 int SSL_get_wfd(const SSL *s)
1634 {
1635 int ret = -1;
1636 BIO *b, *r;
1637
1638 b = SSL_get_wbio(s);
1639 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1640 if (r != NULL)
1641 BIO_get_fd(r, &ret);
1642 return ret;
1643 }
1644
1645 #ifndef OPENSSL_NO_SOCK
1646 static const BIO_METHOD *fd_method(SSL *s)
1647 {
1648 #ifndef OPENSSL_NO_DGRAM
1649 if (IS_QUIC(s))
1650 return BIO_s_datagram();
1651 #endif
1652
1653 return BIO_s_socket();
1654 }
1655
1656 int SSL_set_fd(SSL *s, int fd)
1657 {
1658 int ret = 0;
1659 BIO *bio = NULL;
1660
1661 if (s->type == SSL_TYPE_QUIC_XSO) {
1662 ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1663 goto err;
1664 }
1665
1666 bio = BIO_new(fd_method(s));
1667
1668 if (bio == NULL) {
1669 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1670 goto err;
1671 }
1672 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1673 SSL_set_bio(s, bio, bio);
1674 #ifndef OPENSSL_NO_KTLS
1675 /*
1676 * The new socket is created successfully regardless of ktls_enable.
1677 * ktls_enable doesn't change any functionality of the socket, except
1678 * changing the setsockopt to enable the processing of ktls_start.
1679 * Thus, it is not a problem to call it for non-TLS sockets.
1680 */
1681 ktls_enable(fd);
1682 #endif /* OPENSSL_NO_KTLS */
1683 ret = 1;
1684 err:
1685 return ret;
1686 }
1687
1688 int SSL_set_wfd(SSL *s, int fd)
1689 {
1690 BIO *rbio = SSL_get_rbio(s);
1691 int desired_type = IS_QUIC(s) ? BIO_TYPE_DGRAM : BIO_TYPE_SOCKET;
1692
1693 if (s->type == SSL_TYPE_QUIC_XSO) {
1694 ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1695 return 0;
1696 }
1697
1698 if (rbio == NULL || BIO_method_type(rbio) != desired_type
1699 || (int)BIO_get_fd(rbio, NULL) != fd) {
1700 BIO *bio = BIO_new(fd_method(s));
1701
1702 if (bio == NULL) {
1703 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1704 return 0;
1705 }
1706 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1707 SSL_set0_wbio(s, bio);
1708 #ifndef OPENSSL_NO_KTLS
1709 /*
1710 * The new socket is created successfully regardless of ktls_enable.
1711 * ktls_enable doesn't change any functionality of the socket, except
1712 * changing the setsockopt to enable the processing of ktls_start.
1713 * Thus, it is not a problem to call it for non-TLS sockets.
1714 */
1715 ktls_enable(fd);
1716 #endif /* OPENSSL_NO_KTLS */
1717 } else {
1718 BIO_up_ref(rbio);
1719 SSL_set0_wbio(s, rbio);
1720 }
1721 return 1;
1722 }
1723
1724 int SSL_set_rfd(SSL *s, int fd)
1725 {
1726 BIO *wbio = SSL_get_wbio(s);
1727 int desired_type = IS_QUIC(s) ? BIO_TYPE_DGRAM : BIO_TYPE_SOCKET;
1728
1729 if (s->type == SSL_TYPE_QUIC_XSO) {
1730 ERR_raise(ERR_LIB_SSL, SSL_R_CONN_USE_ONLY);
1731 return 0;
1732 }
1733
1734 if (wbio == NULL || BIO_method_type(wbio) != desired_type
1735 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1736 BIO *bio = BIO_new(fd_method(s));
1737
1738 if (bio == NULL) {
1739 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1740 return 0;
1741 }
1742 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1743 SSL_set0_rbio(s, bio);
1744 } else {
1745 BIO_up_ref(wbio);
1746 SSL_set0_rbio(s, wbio);
1747 }
1748
1749 return 1;
1750 }
1751 #endif
1752
1753 /* return length of latest Finished message we sent, copy to 'buf' */
1754 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1755 {
1756 size_t ret = 0;
1757 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1758
1759 if (sc == NULL)
1760 return 0;
1761
1762 ret = sc->s3.tmp.finish_md_len;
1763 if (count > ret)
1764 count = ret;
1765 memcpy(buf, sc->s3.tmp.finish_md, count);
1766 return ret;
1767 }
1768
1769 /* return length of latest Finished message we expected, copy to 'buf' */
1770 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1771 {
1772 size_t ret = 0;
1773 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1774
1775 if (sc == NULL)
1776 return 0;
1777
1778 ret = sc->s3.tmp.peer_finish_md_len;
1779 if (count > ret)
1780 count = ret;
1781 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1782 return ret;
1783 }
1784
1785 int SSL_get_verify_mode(const SSL *s)
1786 {
1787 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1788
1789 if (sc == NULL)
1790 return 0;
1791
1792 return sc->verify_mode;
1793 }
1794
1795 int SSL_get_verify_depth(const SSL *s)
1796 {
1797 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1798
1799 if (sc == NULL)
1800 return 0;
1801
1802 return X509_VERIFY_PARAM_get_depth(sc->param);
1803 }
1804
1805 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1806 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1807
1808 if (sc == NULL)
1809 return NULL;
1810
1811 return sc->verify_callback;
1812 }
1813
1814 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1815 {
1816 return ctx->verify_mode;
1817 }
1818
1819 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1820 {
1821 return X509_VERIFY_PARAM_get_depth(ctx->param);
1822 }
1823
1824 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1825 return ctx->default_verify_callback;
1826 }
1827
1828 void SSL_set_verify(SSL *s, int mode,
1829 int (*callback) (int ok, X509_STORE_CTX *ctx))
1830 {
1831 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1832
1833 if (sc == NULL)
1834 return;
1835
1836 sc->verify_mode = mode;
1837 if (callback != NULL)
1838 sc->verify_callback = callback;
1839 }
1840
1841 void SSL_set_verify_depth(SSL *s, int depth)
1842 {
1843 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1844
1845 if (sc == NULL)
1846 return;
1847
1848 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1849 }
1850
1851 void SSL_set_read_ahead(SSL *s, int yes)
1852 {
1853 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
1854 OSSL_PARAM options[2], *opts = options;
1855
1856 if (sc == NULL)
1857 return;
1858
1859 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1860
1861 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1862 &sc->rlayer.read_ahead);
1863 *opts = OSSL_PARAM_construct_end();
1864
1865 /* Ignore return value */
1866 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1867 }
1868
1869 int SSL_get_read_ahead(const SSL *s)
1870 {
1871 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
1872
1873 if (sc == NULL)
1874 return 0;
1875
1876 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1877 }
1878
1879 int SSL_pending(const SSL *s)
1880 {
1881 size_t pending = s->method->ssl_pending(s);
1882
1883 /*
1884 * SSL_pending cannot work properly if read-ahead is enabled
1885 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1886 * impossible to fix since SSL_pending cannot report errors that may be
1887 * observed while scanning the new data. (Note that SSL_pending() is
1888 * often used as a boolean value, so we'd better not return -1.)
1889 *
1890 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1891 * we just return INT_MAX.
1892 */
1893 return pending < INT_MAX ? (int)pending : INT_MAX;
1894 }
1895
1896 int SSL_has_pending(const SSL *s)
1897 {
1898 /*
1899 * Similar to SSL_pending() but returns a 1 to indicate that we have
1900 * processed or unprocessed data available or 0 otherwise (as opposed to the
1901 * number of bytes available). Unlike SSL_pending() this will take into
1902 * account read_ahead data. A 1 return simply indicates that we have data.
1903 * That data may not result in any application data, or we may fail to parse
1904 * the records for some reason.
1905 */
1906 const SSL_CONNECTION *sc;
1907
1908 #ifndef OPENSSL_NO_QUIC
1909 if (IS_QUIC(s))
1910 return ossl_quic_has_pending(s);
1911 #endif
1912
1913 sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1914
1915 /* Check buffered app data if any first */
1916 if (SSL_CONNECTION_IS_DTLS(sc)) {
1917 TLS_RECORD *rdata;
1918 pitem *item, *iter;
1919
1920 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data);
1921 while ((item = pqueue_next(&iter)) != NULL) {
1922 rdata = item->data;
1923 if (rdata->length > 0)
1924 return 1;
1925 }
1926 }
1927
1928 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1929 return 1;
1930
1931 return RECORD_LAYER_read_pending(&sc->rlayer);
1932 }
1933
1934 X509 *SSL_get1_peer_certificate(const SSL *s)
1935 {
1936 X509 *r = SSL_get0_peer_certificate(s);
1937
1938 if (r != NULL)
1939 X509_up_ref(r);
1940
1941 return r;
1942 }
1943
1944 X509 *SSL_get0_peer_certificate(const SSL *s)
1945 {
1946 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1947
1948 if (sc == NULL)
1949 return NULL;
1950
1951 if (sc->session == NULL)
1952 return NULL;
1953 else
1954 return sc->session->peer;
1955 }
1956
1957 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1958 {
1959 STACK_OF(X509) *r;
1960 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1961
1962 if (sc == NULL)
1963 return NULL;
1964
1965 if (sc->session == NULL)
1966 r = NULL;
1967 else
1968 r = sc->session->peer_chain;
1969
1970 /*
1971 * If we are a client, cert_chain includes the peer's own certificate; if
1972 * we are a server, it does not.
1973 */
1974
1975 return r;
1976 }
1977
1978 /*
1979 * Now in theory, since the calling process own 't' it should be safe to
1980 * modify. We need to be able to read f without being hassled
1981 */
1982 int SSL_copy_session_id(SSL *t, const SSL *f)
1983 {
1984 int i;
1985 /* TODO(QUIC FUTURE): Not allowed for QUIC currently. */
1986 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1987 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1988
1989 if (tsc == NULL || fsc == NULL)
1990 return 0;
1991
1992 /* Do we need to do SSL locking? */
1993 if (!SSL_set_session(t, SSL_get_session(f))) {
1994 return 0;
1995 }
1996
1997 /*
1998 * what if we are setup for one protocol version but want to talk another
1999 */
2000 if (t->method != f->method) {
2001 t->method->ssl_deinit(t);
2002 t->method = f->method;
2003 if (t->method->ssl_init(t) == 0)
2004 return 0;
2005 }
2006
2007 CRYPTO_UP_REF(&fsc->cert->references, &i);
2008 ssl_cert_free(tsc->cert);
2009 tsc->cert = fsc->cert;
2010 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
2011 return 0;
2012 }
2013
2014 return 1;
2015 }
2016
2017 /* Fix this so it checks all the valid key/cert options */
2018 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
2019 {
2020 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
2021 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
2022 return 0;
2023 }
2024 if (ctx->cert->key->privatekey == NULL) {
2025 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
2026 return 0;
2027 }
2028 return X509_check_private_key
2029 (ctx->cert->key->x509, ctx->cert->key->privatekey);
2030 }
2031
2032 /* Fix this function so that it takes an optional type parameter */
2033 int SSL_check_private_key(const SSL *ssl)
2034 {
2035 const SSL_CONNECTION *sc;
2036
2037 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
2038 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
2039 return 0;
2040 }
2041 if (sc->cert->key->x509 == NULL) {
2042 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
2043 return 0;
2044 }
2045 if (sc->cert->key->privatekey == NULL) {
2046 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
2047 return 0;
2048 }
2049 return X509_check_private_key(sc->cert->key->x509,
2050 sc->cert->key->privatekey);
2051 }
2052
2053 int SSL_waiting_for_async(SSL *s)
2054 {
2055 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2056
2057 if (sc == NULL)
2058 return 0;
2059
2060 if (sc->job)
2061 return 1;
2062
2063 return 0;
2064 }
2065
2066 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
2067 {
2068 ASYNC_WAIT_CTX *ctx;
2069 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2070
2071 if (sc == NULL)
2072 return 0;
2073
2074 if ((ctx = sc->waitctx) == NULL)
2075 return 0;
2076 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
2077 }
2078
2079 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
2080 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
2081 {
2082 ASYNC_WAIT_CTX *ctx;
2083 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2084
2085 if (sc == NULL)
2086 return 0;
2087
2088 if ((ctx = sc->waitctx) == NULL)
2089 return 0;
2090 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2091 numdelfds);
2092 }
2093
2094 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2095 {
2096 ctx->async_cb = callback;
2097 return 1;
2098 }
2099
2100 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2101 {
2102 ctx->async_cb_arg = arg;
2103 return 1;
2104 }
2105
2106 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2107 {
2108 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2109
2110 if (sc == NULL)
2111 return 0;
2112
2113 sc->async_cb = callback;
2114 return 1;
2115 }
2116
2117 int SSL_set_async_callback_arg(SSL *s, void *arg)
2118 {
2119 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2120
2121 if (sc == NULL)
2122 return 0;
2123
2124 sc->async_cb_arg = arg;
2125 return 1;
2126 }
2127
2128 int SSL_get_async_status(SSL *s, int *status)
2129 {
2130 ASYNC_WAIT_CTX *ctx;
2131 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2132
2133 if (sc == NULL)
2134 return 0;
2135
2136 if ((ctx = sc->waitctx) == NULL)
2137 return 0;
2138 *status = ASYNC_WAIT_CTX_get_status(ctx);
2139 return 1;
2140 }
2141
2142 int SSL_accept(SSL *s)
2143 {
2144 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2145
2146 #ifndef OPENSSL_NO_QUIC
2147 if (IS_QUIC(s))
2148 return s->method->ssl_accept(s);
2149 #endif
2150
2151 if (sc == NULL)
2152 return 0;
2153
2154 if (sc->handshake_func == NULL) {
2155 /* Not properly initialized yet */
2156 SSL_set_accept_state(s);
2157 }
2158
2159 return SSL_do_handshake(s);
2160 }
2161
2162 int SSL_connect(SSL *s)
2163 {
2164 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2165
2166 #ifndef OPENSSL_NO_QUIC
2167 if (IS_QUIC(s))
2168 return s->method->ssl_connect(s);
2169 #endif
2170
2171 if (sc == NULL)
2172 return 0;
2173
2174 if (sc->handshake_func == NULL) {
2175 /* Not properly initialized yet */
2176 SSL_set_connect_state(s);
2177 }
2178
2179 return SSL_do_handshake(s);
2180 }
2181
2182 long SSL_get_default_timeout(const SSL *s)
2183 {
2184 return (long int)ossl_time2seconds(s->method->get_timeout());
2185 }
2186
2187 static int ssl_async_wait_ctx_cb(void *arg)
2188 {
2189 SSL *s = (SSL *)arg;
2190 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2191
2192 if (sc == NULL)
2193 return 0;
2194
2195 return sc->async_cb(s, sc->async_cb_arg);
2196 }
2197
2198 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2199 int (*func) (void *))
2200 {
2201 int ret;
2202 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2203
2204 if (sc == NULL)
2205 return 0;
2206
2207 if (sc->waitctx == NULL) {
2208 sc->waitctx = ASYNC_WAIT_CTX_new();
2209 if (sc->waitctx == NULL)
2210 return -1;
2211 if (sc->async_cb != NULL
2212 && !ASYNC_WAIT_CTX_set_callback
2213 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2214 return -1;
2215 }
2216
2217 sc->rwstate = SSL_NOTHING;
2218 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2219 sizeof(struct ssl_async_args))) {
2220 case ASYNC_ERR:
2221 sc->rwstate = SSL_NOTHING;
2222 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2223 return -1;
2224 case ASYNC_PAUSE:
2225 sc->rwstate = SSL_ASYNC_PAUSED;
2226 return -1;
2227 case ASYNC_NO_JOBS:
2228 sc->rwstate = SSL_ASYNC_NO_JOBS;
2229 return -1;
2230 case ASYNC_FINISH:
2231 sc->job = NULL;
2232 return ret;
2233 default:
2234 sc->rwstate = SSL_NOTHING;
2235 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2236 /* Shouldn't happen */
2237 return -1;
2238 }
2239 }
2240
2241 static int ssl_io_intern(void *vargs)
2242 {
2243 struct ssl_async_args *args;
2244 SSL *s;
2245 void *buf;
2246 size_t num;
2247 SSL_CONNECTION *sc;
2248
2249 args = (struct ssl_async_args *)vargs;
2250 s = args->s;
2251 buf = args->buf;
2252 num = args->num;
2253 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2254 return -1;
2255
2256 switch (args->type) {
2257 case READFUNC:
2258 return args->f.func_read(s, buf, num, &sc->asyncrw);
2259 case WRITEFUNC:
2260 return args->f.func_write(s, buf, num, &sc->asyncrw);
2261 case OTHERFUNC:
2262 return args->f.func_other(s);
2263 }
2264 return -1;
2265 }
2266
2267 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2268 {
2269 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2270
2271 #ifndef OPENSSL_NO_QUIC
2272 if (IS_QUIC(s))
2273 return s->method->ssl_read(s, buf, num, readbytes);
2274 #endif
2275
2276 if (sc == NULL)
2277 return -1;
2278
2279 if (sc->handshake_func == NULL) {
2280 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2281 return -1;
2282 }
2283
2284 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2285 sc->rwstate = SSL_NOTHING;
2286 return 0;
2287 }
2288
2289 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2290 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2291 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2292 return 0;
2293 }
2294 /*
2295 * If we are a client and haven't received the ServerHello etc then we
2296 * better do that
2297 */
2298 ossl_statem_check_finish_init(sc, 0);
2299
2300 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2301 struct ssl_async_args args;
2302 int ret;
2303
2304 args.s = s;
2305 args.buf = buf;
2306 args.num = num;
2307 args.type = READFUNC;
2308 args.f.func_read = s->method->ssl_read;
2309
2310 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2311 *readbytes = sc->asyncrw;
2312 return ret;
2313 } else {
2314 return s->method->ssl_read(s, buf, num, readbytes);
2315 }
2316 }
2317
2318 int SSL_read(SSL *s, void *buf, int num)
2319 {
2320 int ret;
2321 size_t readbytes;
2322
2323 if (num < 0) {
2324 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2325 return -1;
2326 }
2327
2328 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2329
2330 /*
2331 * The cast is safe here because ret should be <= INT_MAX because num is
2332 * <= INT_MAX
2333 */
2334 if (ret > 0)
2335 ret = (int)readbytes;
2336
2337 return ret;
2338 }
2339
2340 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2341 {
2342 int ret = ssl_read_internal(s, buf, num, readbytes);
2343
2344 if (ret < 0)
2345 ret = 0;
2346 return ret;
2347 }
2348
2349 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2350 {
2351 int ret;
2352 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2353
2354 /* TODO(QUIC 0RTT): 0-RTT support */
2355 if (sc == NULL || !sc->server) {
2356 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2357 return SSL_READ_EARLY_DATA_ERROR;
2358 }
2359
2360 switch (sc->early_data_state) {
2361 case SSL_EARLY_DATA_NONE:
2362 if (!SSL_in_before(s)) {
2363 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2364 return SSL_READ_EARLY_DATA_ERROR;
2365 }
2366 /* fall through */
2367
2368 case SSL_EARLY_DATA_ACCEPT_RETRY:
2369 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2370 ret = SSL_accept(s);
2371 if (ret <= 0) {
2372 /* NBIO or error */
2373 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2374 return SSL_READ_EARLY_DATA_ERROR;
2375 }
2376 /* fall through */
2377
2378 case SSL_EARLY_DATA_READ_RETRY:
2379 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2380 sc->early_data_state = SSL_EARLY_DATA_READING;
2381 ret = SSL_read_ex(s, buf, num, readbytes);
2382 /*
2383 * State machine will update early_data_state to
2384 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2385 * message
2386 */
2387 if (ret > 0 || (ret <= 0 && sc->early_data_state
2388 != SSL_EARLY_DATA_FINISHED_READING)) {
2389 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2390 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2391 : SSL_READ_EARLY_DATA_ERROR;
2392 }
2393 } else {
2394 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2395 }
2396 *readbytes = 0;
2397 return SSL_READ_EARLY_DATA_FINISH;
2398
2399 default:
2400 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2401 return SSL_READ_EARLY_DATA_ERROR;
2402 }
2403 }
2404
2405 int SSL_get_early_data_status(const SSL *s)
2406 {
2407 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2408
2409 /* TODO(QUIC 0RTT): 0-RTT support */
2410 if (sc == NULL)
2411 return 0;
2412
2413 return sc->ext.early_data;
2414 }
2415
2416 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2417 {
2418 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2419
2420 #ifndef OPENSSL_NO_QUIC
2421 if (IS_QUIC(s))
2422 return s->method->ssl_peek(s, buf, num, readbytes);
2423 #endif
2424
2425 if (sc == NULL)
2426 return 0;
2427
2428 if (sc->handshake_func == NULL) {
2429 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2430 return -1;
2431 }
2432
2433 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2434 return 0;
2435 }
2436 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2437 struct ssl_async_args args;
2438 int ret;
2439
2440 args.s = s;
2441 args.buf = buf;
2442 args.num = num;
2443 args.type = READFUNC;
2444 args.f.func_read = s->method->ssl_peek;
2445
2446 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2447 *readbytes = sc->asyncrw;
2448 return ret;
2449 } else {
2450 return s->method->ssl_peek(s, buf, num, readbytes);
2451 }
2452 }
2453
2454 int SSL_peek(SSL *s, void *buf, int num)
2455 {
2456 int ret;
2457 size_t readbytes;
2458
2459 if (num < 0) {
2460 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2461 return -1;
2462 }
2463
2464 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2465
2466 /*
2467 * The cast is safe here because ret should be <= INT_MAX because num is
2468 * <= INT_MAX
2469 */
2470 if (ret > 0)
2471 ret = (int)readbytes;
2472
2473 return ret;
2474 }
2475
2476
2477 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2478 {
2479 int ret = ssl_peek_internal(s, buf, num, readbytes);
2480
2481 if (ret < 0)
2482 ret = 0;
2483 return ret;
2484 }
2485
2486 int ssl_write_internal(SSL *s, const void *buf, size_t num,
2487 uint64_t flags, size_t *written)
2488 {
2489 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2490
2491 #ifndef OPENSSL_NO_QUIC
2492 if (IS_QUIC(s))
2493 return ossl_quic_write_flags(s, buf, num, flags, written);
2494 #endif
2495
2496 if (sc == NULL)
2497 return 0;
2498
2499 if (sc->handshake_func == NULL) {
2500 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2501 return -1;
2502 }
2503
2504 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2505 sc->rwstate = SSL_NOTHING;
2506 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2507 return -1;
2508 }
2509
2510 if (flags != 0) {
2511 ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_WRITE_FLAG);
2512 return -1;
2513 }
2514
2515 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2516 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2517 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2518 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2519 return 0;
2520 }
2521 /* If we are a client and haven't sent the Finished we better do that */
2522 ossl_statem_check_finish_init(sc, 1);
2523
2524 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2525 int ret;
2526 struct ssl_async_args args;
2527
2528 args.s = s;
2529 args.buf = (void *)buf;
2530 args.num = num;
2531 args.type = WRITEFUNC;
2532 args.f.func_write = s->method->ssl_write;
2533
2534 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2535 *written = sc->asyncrw;
2536 return ret;
2537 } else {
2538 return s->method->ssl_write(s, buf, num, written);
2539 }
2540 }
2541
2542 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2543 {
2544 ossl_ssize_t ret;
2545 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2546
2547 if (sc == NULL)
2548 return 0;
2549
2550 if (sc->handshake_func == NULL) {
2551 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2552 return -1;
2553 }
2554
2555 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2556 sc->rwstate = SSL_NOTHING;
2557 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2558 return -1;
2559 }
2560
2561 if (!BIO_get_ktls_send(sc->wbio)) {
2562 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2563 return -1;
2564 }
2565
2566 /* If we have an alert to send, lets send it */
2567 if (sc->s3.alert_dispatch > 0) {
2568 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2569 if (ret <= 0) {
2570 /* SSLfatal() already called if appropriate */
2571 return ret;
2572 }
2573 /* if it went, fall through and send more stuff */
2574 }
2575
2576 sc->rwstate = SSL_WRITING;
2577 if (BIO_flush(sc->wbio) <= 0) {
2578 if (!BIO_should_retry(sc->wbio)) {
2579 sc->rwstate = SSL_NOTHING;
2580 } else {
2581 #ifdef EAGAIN
2582 set_sys_error(EAGAIN);
2583 #endif
2584 }
2585 return -1;
2586 }
2587
2588 #ifdef OPENSSL_NO_KTLS
2589 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2590 "can't call ktls_sendfile(), ktls disabled");
2591 return -1;
2592 #else
2593 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2594 if (ret < 0) {
2595 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2596 if ((get_last_sys_error() == EAGAIN) ||
2597 (get_last_sys_error() == EINTR) ||
2598 (get_last_sys_error() == EBUSY))
2599 BIO_set_retry_write(sc->wbio);
2600 else
2601 #endif
2602 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2603 return ret;
2604 }
2605 sc->rwstate = SSL_NOTHING;
2606 return ret;
2607 #endif
2608 }
2609
2610 int SSL_write(SSL *s, const void *buf, int num)
2611 {
2612 int ret;
2613 size_t written;
2614
2615 if (num < 0) {
2616 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2617 return -1;
2618 }
2619
2620 ret = ssl_write_internal(s, buf, (size_t)num, 0, &written);
2621
2622 /*
2623 * The cast is safe here because ret should be <= INT_MAX because num is
2624 * <= INT_MAX
2625 */
2626 if (ret > 0)
2627 ret = (int)written;
2628
2629 return ret;
2630 }
2631
2632 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2633 {
2634 return SSL_write_ex2(s, buf, num, 0, written);
2635 }
2636
2637 int SSL_write_ex2(SSL *s, const void *buf, size_t num, uint64_t flags,
2638 size_t *written)
2639 {
2640 int ret = ssl_write_internal(s, buf, num, flags, written);
2641
2642 if (ret < 0)
2643 ret = 0;
2644 return ret;
2645 }
2646
2647 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2648 {
2649 int ret, early_data_state;
2650 size_t writtmp;
2651 uint32_t partialwrite;
2652 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2653
2654 /* TODO(QUIC 0RTT): This will need special handling for QUIC */
2655 if (sc == NULL)
2656 return 0;
2657
2658 switch (sc->early_data_state) {
2659 case SSL_EARLY_DATA_NONE:
2660 if (sc->server
2661 || !SSL_in_before(s)
2662 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2663 && (sc->psk_use_session_cb == NULL))) {
2664 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2665 return 0;
2666 }
2667 /* fall through */
2668
2669 case SSL_EARLY_DATA_CONNECT_RETRY:
2670 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2671 ret = SSL_connect(s);
2672 if (ret <= 0) {
2673 /* NBIO or error */
2674 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2675 return 0;
2676 }
2677 /* fall through */
2678
2679 case SSL_EARLY_DATA_WRITE_RETRY:
2680 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2681 /*
2682 * We disable partial write for early data because we don't keep track
2683 * of how many bytes we've written between the SSL_write_ex() call and
2684 * the flush if the flush needs to be retried)
2685 */
2686 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2687 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2688 ret = SSL_write_ex(s, buf, num, &writtmp);
2689 sc->mode |= partialwrite;
2690 if (!ret) {
2691 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2692 return ret;
2693 }
2694 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2695 /* fall through */
2696
2697 case SSL_EARLY_DATA_WRITE_FLUSH:
2698 /* The buffering BIO is still in place so we need to flush it */
2699 if (statem_flush(sc) != 1)
2700 return 0;
2701 *written = num;
2702 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2703 return 1;
2704
2705 case SSL_EARLY_DATA_FINISHED_READING:
2706 case SSL_EARLY_DATA_READ_RETRY:
2707 early_data_state = sc->early_data_state;
2708 /* We are a server writing to an unauthenticated client */
2709 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2710 ret = SSL_write_ex(s, buf, num, written);
2711 /* The buffering BIO is still in place */
2712 if (ret)
2713 (void)BIO_flush(sc->wbio);
2714 sc->early_data_state = early_data_state;
2715 return ret;
2716
2717 default:
2718 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2719 return 0;
2720 }
2721 }
2722
2723 int SSL_shutdown(SSL *s)
2724 {
2725 /*
2726 * Note that this function behaves differently from what one might
2727 * expect. Return values are 0 for no success (yet), 1 for success; but
2728 * calling it once is usually not enough, even if blocking I/O is used
2729 * (see ssl3_shutdown).
2730 */
2731 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2732
2733 #ifndef OPENSSL_NO_QUIC
2734 if (IS_QUIC(s))
2735 return ossl_quic_conn_shutdown(s, 0, NULL, 0);
2736 #endif
2737
2738 if (sc == NULL)
2739 return -1;
2740
2741 if (sc->handshake_func == NULL) {
2742 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2743 return -1;
2744 }
2745
2746 if (!SSL_in_init(s)) {
2747 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2748 struct ssl_async_args args;
2749
2750 memset(&args, 0, sizeof(args));
2751 args.s = s;
2752 args.type = OTHERFUNC;
2753 args.f.func_other = s->method->ssl_shutdown;
2754
2755 return ssl_start_async_job(s, &args, ssl_io_intern);
2756 } else {
2757 return s->method->ssl_shutdown(s);
2758 }
2759 } else {
2760 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2761 return -1;
2762 }
2763 }
2764
2765 int SSL_key_update(SSL *s, int updatetype)
2766 {
2767 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2768
2769 #ifndef OPENSSL_NO_QUIC
2770 if (IS_QUIC(s))
2771 return ossl_quic_key_update(s, updatetype);
2772 #endif
2773
2774 if (sc == NULL)
2775 return 0;
2776
2777 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2778 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2779 return 0;
2780 }
2781
2782 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2783 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2784 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2785 return 0;
2786 }
2787
2788 if (!SSL_is_init_finished(s)) {
2789 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2790 return 0;
2791 }
2792
2793 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2794 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2795 return 0;
2796 }
2797
2798 ossl_statem_set_in_init(sc, 1);
2799 sc->key_update = updatetype;
2800 return 1;
2801 }
2802
2803 int SSL_get_key_update_type(const SSL *s)
2804 {
2805 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2806
2807 #ifndef OPENSSL_NO_QUIC
2808 if (IS_QUIC(s))
2809 return ossl_quic_get_key_update_type(s);
2810 #endif
2811
2812 if (sc == NULL)
2813 return 0;
2814
2815 return sc->key_update;
2816 }
2817
2818 /*
2819 * Can we accept a renegotiation request? If yes, set the flag and
2820 * return 1 if yes. If not, raise error and return 0.
2821 */
2822 static int can_renegotiate(const SSL_CONNECTION *sc)
2823 {
2824 if (SSL_CONNECTION_IS_TLS13(sc)) {
2825 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2826 return 0;
2827 }
2828
2829 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2830 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2831 return 0;
2832 }
2833
2834 return 1;
2835 }
2836
2837 int SSL_renegotiate(SSL *s)
2838 {
2839 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2840
2841 if (sc == NULL)
2842 return 0;
2843
2844 if (!can_renegotiate(sc))
2845 return 0;
2846
2847 sc->renegotiate = 1;
2848 sc->new_session = 1;
2849 return s->method->ssl_renegotiate(s);
2850 }
2851
2852 int SSL_renegotiate_abbreviated(SSL *s)
2853 {
2854 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2855
2856 if (sc == NULL)
2857 return 0;
2858
2859 if (!can_renegotiate(sc))
2860 return 0;
2861
2862 sc->renegotiate = 1;
2863 sc->new_session = 0;
2864 return s->method->ssl_renegotiate(s);
2865 }
2866
2867 int SSL_renegotiate_pending(const SSL *s)
2868 {
2869 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2870
2871 if (sc == NULL)
2872 return 0;
2873
2874 /*
2875 * becomes true when negotiation is requested; false again once a
2876 * handshake has finished
2877 */
2878 return (sc->renegotiate != 0);
2879 }
2880
2881 int SSL_new_session_ticket(SSL *s)
2882 {
2883 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2884
2885 if (sc == NULL)
2886 return 0;
2887
2888 /* If we are in init because we're sending tickets, okay to send more. */
2889 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2890 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2891 || !SSL_CONNECTION_IS_TLS13(sc))
2892 return 0;
2893 sc->ext.extra_tickets_expected++;
2894 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2895 ossl_statem_set_in_init(sc, 1);
2896 return 1;
2897 }
2898
2899 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2900 {
2901 return ossl_ctrl_internal(s, cmd, larg, parg, /*no_quic=*/0);
2902 }
2903
2904 long ossl_ctrl_internal(SSL *s, int cmd, long larg, void *parg, int no_quic)
2905 {
2906 long l;
2907 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2908
2909 /*
2910 * Routing of ctrl calls for QUIC is a little counterintuitive:
2911 *
2912 * - Firstly (no_quic=0), we pass the ctrl directly to our QUIC
2913 * implementation in case it wants to handle the ctrl specially.
2914 *
2915 * - If our QUIC implementation does not care about the ctrl, it
2916 * will reenter this function with no_quic=1 and we will try to handle
2917 * it directly using the QCSO SSL object stub (not the handshake layer
2918 * SSL object). This is important for e.g. the version configuration
2919 * ctrls below, which must use s->defltmeth (and not sc->defltmeth).
2920 *
2921 * - If we don't handle a ctrl here specially, then processing is
2922 * redirected to the handshake layer SSL object.
2923 */
2924 if (!no_quic && IS_QUIC(s))
2925 return s->method->ssl_ctrl(s, cmd, larg, parg);
2926
2927 if (sc == NULL)
2928 return 0;
2929
2930 switch (cmd) {
2931 case SSL_CTRL_GET_READ_AHEAD:
2932 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2933 case SSL_CTRL_SET_READ_AHEAD:
2934 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2935 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2936 return l;
2937
2938 case SSL_CTRL_MODE:
2939 {
2940 OSSL_PARAM options[2], *opts = options;
2941
2942 sc->mode |= larg;
2943
2944 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2945 &sc->mode);
2946 *opts = OSSL_PARAM_construct_end();
2947
2948 /* Ignore return value */
2949 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2950
2951 return sc->mode;
2952 }
2953 case SSL_CTRL_CLEAR_MODE:
2954 return (sc->mode &= ~larg);
2955 case SSL_CTRL_GET_MAX_CERT_LIST:
2956 return (long)sc->max_cert_list;
2957 case SSL_CTRL_SET_MAX_CERT_LIST:
2958 if (larg < 0)
2959 return 0;
2960 l = (long)sc->max_cert_list;
2961 sc->max_cert_list = (size_t)larg;
2962 return l;
2963 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2964 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2965 return 0;
2966 #ifndef OPENSSL_NO_KTLS
2967 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2968 return 0;
2969 #endif /* OPENSSL_NO_KTLS */
2970 sc->max_send_fragment = larg;
2971 if (sc->max_send_fragment < sc->split_send_fragment)
2972 sc->split_send_fragment = sc->max_send_fragment;
2973 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2974 return 1;
2975 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2976 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2977 return 0;
2978 sc->split_send_fragment = larg;
2979 return 1;
2980 case SSL_CTRL_SET_MAX_PIPELINES:
2981 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2982 return 0;
2983 sc->max_pipelines = larg;
2984 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2985 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2986 return 1;
2987 case SSL_CTRL_GET_RI_SUPPORT:
2988 return sc->s3.send_connection_binding;
2989 case SSL_CTRL_SET_RETRY_VERIFY:
2990 sc->rwstate = SSL_RETRY_VERIFY;
2991 return 1;
2992 case SSL_CTRL_CERT_FLAGS:
2993 return (sc->cert->cert_flags |= larg);
2994 case SSL_CTRL_CLEAR_CERT_FLAGS:
2995 return (sc->cert->cert_flags &= ~larg);
2996
2997 case SSL_CTRL_GET_RAW_CIPHERLIST:
2998 if (parg) {
2999 if (sc->s3.tmp.ciphers_raw == NULL)
3000 return 0;
3001 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
3002 return (int)sc->s3.tmp.ciphers_rawlen;
3003 } else {
3004 return TLS_CIPHER_LEN;
3005 }
3006 case SSL_CTRL_GET_EXTMS_SUPPORT:
3007 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
3008 return -1;
3009 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
3010 return 1;
3011 else
3012 return 0;
3013 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3014 return ssl_check_allowed_versions(larg, sc->max_proto_version)
3015 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
3016 &sc->min_proto_version);
3017 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3018 return sc->min_proto_version;
3019 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3020 return ssl_check_allowed_versions(sc->min_proto_version, larg)
3021 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
3022 &sc->max_proto_version);
3023 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3024 return sc->max_proto_version;
3025 default:
3026 if (IS_QUIC(s))
3027 return SSL_ctrl((SSL *)sc, cmd, larg, parg);
3028 else
3029 return s->method->ssl_ctrl(s, cmd, larg, parg);
3030 }
3031 }
3032
3033 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
3034 {
3035 return s->method->ssl_callback_ctrl(s, cmd, fp);
3036 }
3037
3038 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
3039 {
3040 return ctx->sessions;
3041 }
3042
3043 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
3044 {
3045 int res = 0;
3046
3047 if (ssl_tsan_lock(ctx)) {
3048 res = tsan_load(stat);
3049 ssl_tsan_unlock(ctx);
3050 }
3051 return res;
3052 }
3053
3054 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
3055 {
3056 long l;
3057 /* For some cases with ctx == NULL perform syntax checks */
3058 if (ctx == NULL) {
3059 switch (cmd) {
3060 case SSL_CTRL_SET_GROUPS_LIST:
3061 return tls1_set_groups_list(ctx, NULL, NULL, parg);
3062 case SSL_CTRL_SET_SIGALGS_LIST:
3063 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
3064 return tls1_set_sigalgs_list(ctx, NULL, parg, 0);
3065 default:
3066 return 0;
3067 }
3068 }
3069
3070 switch (cmd) {
3071 case SSL_CTRL_GET_READ_AHEAD:
3072 return ctx->read_ahead;
3073 case SSL_CTRL_SET_READ_AHEAD:
3074 l = ctx->read_ahead;
3075 ctx->read_ahead = larg;
3076 return l;
3077
3078 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
3079 ctx->msg_callback_arg = parg;
3080 return 1;
3081
3082 case SSL_CTRL_GET_MAX_CERT_LIST:
3083 return (long)ctx->max_cert_list;
3084 case SSL_CTRL_SET_MAX_CERT_LIST:
3085 if (larg < 0)
3086 return 0;
3087 l = (long)ctx->max_cert_list;
3088 ctx->max_cert_list = (size_t)larg;
3089 return l;
3090
3091 case SSL_CTRL_SET_SESS_CACHE_SIZE:
3092 if (larg < 0)
3093 return 0;
3094 l = (long)ctx->session_cache_size;
3095 ctx->session_cache_size = (size_t)larg;
3096 return l;
3097 case SSL_CTRL_GET_SESS_CACHE_SIZE:
3098 return (long)ctx->session_cache_size;
3099 case SSL_CTRL_SET_SESS_CACHE_MODE:
3100 l = ctx->session_cache_mode;
3101 ctx->session_cache_mode = larg;
3102 return l;
3103 case SSL_CTRL_GET_SESS_CACHE_MODE:
3104 return ctx->session_cache_mode;
3105
3106 case SSL_CTRL_SESS_NUMBER:
3107 return lh_SSL_SESSION_num_items(ctx->sessions);
3108 case SSL_CTRL_SESS_CONNECT:
3109 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3110 case SSL_CTRL_SESS_CONNECT_GOOD:
3111 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3112 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3113 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3114 case SSL_CTRL_SESS_ACCEPT:
3115 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3116 case SSL_CTRL_SESS_ACCEPT_GOOD:
3117 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3118 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3119 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3120 case SSL_CTRL_SESS_HIT:
3121 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3122 case SSL_CTRL_SESS_CB_HIT:
3123 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3124 case SSL_CTRL_SESS_MISSES:
3125 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3126 case SSL_CTRL_SESS_TIMEOUTS:
3127 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3128 case SSL_CTRL_SESS_CACHE_FULL:
3129 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3130 case SSL_CTRL_MODE:
3131 return (ctx->mode |= larg);
3132 case SSL_CTRL_CLEAR_MODE:
3133 return (ctx->mode &= ~larg);
3134 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3135 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3136 return 0;
3137 ctx->max_send_fragment = larg;
3138 if (ctx->max_send_fragment < ctx->split_send_fragment)
3139 ctx->split_send_fragment = ctx->max_send_fragment;
3140 return 1;
3141 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3142 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3143 return 0;
3144 ctx->split_send_fragment = larg;
3145 return 1;
3146 case SSL_CTRL_SET_MAX_PIPELINES:
3147 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3148 return 0;
3149 ctx->max_pipelines = larg;
3150 return 1;
3151 case SSL_CTRL_CERT_FLAGS:
3152 return (ctx->cert->cert_flags |= larg);
3153 case SSL_CTRL_CLEAR_CERT_FLAGS:
3154 return (ctx->cert->cert_flags &= ~larg);
3155 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3156 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3157 && ssl_set_version_bound(ctx->method->version, (int)larg,
3158 &ctx->min_proto_version);
3159 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3160 return ctx->min_proto_version;
3161 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3162 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3163 && ssl_set_version_bound(ctx->method->version, (int)larg,
3164 &ctx->max_proto_version);
3165 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3166 return ctx->max_proto_version;
3167 default:
3168 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3169 }
3170 }
3171
3172 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3173 {
3174 switch (cmd) {
3175 case SSL_CTRL_SET_MSG_CALLBACK:
3176 ctx->msg_callback = (void (*)
3177 (int write_p, int version, int content_type,
3178 const void *buf, size_t len, SSL *ssl,
3179 void *arg))(fp);
3180 return 1;
3181
3182 default:
3183 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3184 }
3185 }
3186
3187 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3188 {
3189 if (a->id > b->id)
3190 return 1;
3191 if (a->id < b->id)
3192 return -1;
3193 return 0;
3194 }
3195
3196 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3197 const SSL_CIPHER *const *bp)
3198 {
3199 if ((*ap)->id > (*bp)->id)
3200 return 1;
3201 if ((*ap)->id < (*bp)->id)
3202 return -1;
3203 return 0;
3204 }
3205
3206 /*
3207 * return a STACK of the ciphers available for the SSL and in order of
3208 * preference
3209 */
3210 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3211 {
3212 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3213
3214 if (sc != NULL) {
3215 if (sc->cipher_list != NULL) {
3216 return sc->cipher_list;
3217 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3218 return s->ctx->cipher_list;
3219 }
3220 }
3221 return NULL;
3222 }
3223
3224 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3225 {
3226 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3227
3228 if (sc == NULL || !sc->server)
3229 return NULL;
3230 return sc->peer_ciphers;
3231 }
3232
3233 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3234 {
3235 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3236 int i;
3237 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3238
3239 if (sc == NULL)
3240 return NULL;
3241
3242 ciphers = SSL_get_ciphers(s);
3243 if (!ciphers)
3244 return NULL;
3245 if (!ssl_set_client_disabled(sc))
3246 return NULL;
3247 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3248 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3249 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3250 if (!sk)
3251 sk = sk_SSL_CIPHER_new_null();
3252 if (!sk)
3253 return NULL;
3254 if (!sk_SSL_CIPHER_push(sk, c)) {
3255 sk_SSL_CIPHER_free(sk);
3256 return NULL;
3257 }
3258 }
3259 }
3260 return sk;
3261 }
3262
3263 /** return a STACK of the ciphers available for the SSL and in order of
3264 * algorithm id */
3265 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3266 {
3267 if (s != NULL) {
3268 if (s->cipher_list_by_id != NULL)
3269 return s->cipher_list_by_id;
3270 else if (s->ssl.ctx != NULL
3271 && s->ssl.ctx->cipher_list_by_id != NULL)
3272 return s->ssl.ctx->cipher_list_by_id;
3273 }
3274 return NULL;
3275 }
3276
3277 /** The old interface to get the same thing as SSL_get_ciphers() */
3278 const char *SSL_get_cipher_list(const SSL *s, int n)
3279 {
3280 const SSL_CIPHER *c;
3281 STACK_OF(SSL_CIPHER) *sk;
3282
3283 if (s == NULL)
3284 return NULL;
3285 sk = SSL_get_ciphers(s);
3286 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3287 return NULL;
3288 c = sk_SSL_CIPHER_value(sk, n);
3289 if (c == NULL)
3290 return NULL;
3291 return c->name;
3292 }
3293
3294 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3295 * preference */
3296 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3297 {
3298 if (ctx != NULL)
3299 return ctx->cipher_list;
3300 return NULL;
3301 }
3302
3303 /*
3304 * Distinguish between ciphers controlled by set_ciphersuite() and
3305 * set_cipher_list() when counting.
3306 */
3307 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3308 {
3309 int i, num = 0;
3310 const SSL_CIPHER *c;
3311
3312 if (sk == NULL)
3313 return 0;
3314 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3315 c = sk_SSL_CIPHER_value(sk, i);
3316 if (c->min_tls >= TLS1_3_VERSION)
3317 continue;
3318 num++;
3319 }
3320 return num;
3321 }
3322
3323 /** specify the ciphers to be used by default by the SSL_CTX */
3324 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3325 {
3326 STACK_OF(SSL_CIPHER) *sk;
3327
3328 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3329 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3330 ctx->cert);
3331 /*
3332 * ssl_create_cipher_list may return an empty stack if it was unable to
3333 * find a cipher matching the given rule string (for example if the rule
3334 * string specifies a cipher which has been disabled). This is not an
3335 * error as far as ssl_create_cipher_list is concerned, and hence
3336 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3337 */
3338 if (sk == NULL)
3339 return 0;
3340 else if (cipher_list_tls12_num(sk) == 0) {
3341 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3342 return 0;
3343 }
3344 return 1;
3345 }
3346
3347 /** specify the ciphers to be used by the SSL */
3348 int SSL_set_cipher_list(SSL *s, const char *str)
3349 {
3350 STACK_OF(SSL_CIPHER) *sk;
3351 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3352
3353 if (sc == NULL)
3354 return 0;
3355
3356 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3357 &sc->cipher_list, &sc->cipher_list_by_id, str,
3358 sc->cert);
3359 /* see comment in SSL_CTX_set_cipher_list */
3360 if (sk == NULL)
3361 return 0;
3362 else if (cipher_list_tls12_num(sk) == 0) {
3363 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3364 return 0;
3365 }
3366 return 1;
3367 }
3368
3369 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3370 {
3371 char *p;
3372 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3373 const SSL_CIPHER *c;
3374 int i;
3375 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3376
3377 if (sc == NULL)
3378 return NULL;
3379
3380 if (!sc->server
3381 || sc->peer_ciphers == NULL
3382 || size < 2)
3383 return NULL;
3384
3385 p = buf;
3386 clntsk = sc->peer_ciphers;
3387 srvrsk = SSL_get_ciphers(s);
3388 if (clntsk == NULL || srvrsk == NULL)
3389 return NULL;
3390
3391 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3392 return NULL;
3393
3394 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3395 int n;
3396
3397 c = sk_SSL_CIPHER_value(clntsk, i);
3398 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3399 continue;
3400
3401 n = OPENSSL_strnlen(c->name, size);
3402 if (n >= size) {
3403 if (p != buf)
3404 --p;
3405 *p = '\0';
3406 return buf;
3407 }
3408 memcpy(p, c->name, n);
3409 p += n;
3410 *(p++) = ':';
3411 size -= n + 1;
3412 }
3413 p[-1] = '\0';
3414 return buf;
3415 }
3416
3417 /**
3418 * Return the requested servername (SNI) value. Note that the behaviour varies
3419 * depending on:
3420 * - whether this is called by the client or the server,
3421 * - if we are before or during/after the handshake,
3422 * - if a resumption or normal handshake is being attempted/has occurred
3423 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3424 *
3425 * Note that only the host_name type is defined (RFC 3546).
3426 */
3427 const char *SSL_get_servername(const SSL *s, const int type)
3428 {
3429 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3430 int server;
3431
3432 if (sc == NULL)
3433 return NULL;
3434
3435 /*
3436 * If we don't know if we are the client or the server yet then we assume
3437 * client.
3438 */
3439 server = sc->handshake_func == NULL ? 0 : sc->server;
3440
3441 if (type != TLSEXT_NAMETYPE_host_name)
3442 return NULL;
3443
3444 if (server) {
3445 /**
3446 * Server side
3447 * In TLSv1.3 on the server SNI is not associated with the session
3448 * but in TLSv1.2 or below it is.
3449 *
3450 * Before the handshake:
3451 * - return NULL
3452 *
3453 * During/after the handshake (TLSv1.2 or below resumption occurred):
3454 * - If a servername was accepted by the server in the original
3455 * handshake then it will return that servername, or NULL otherwise.
3456 *
3457 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3458 * - The function will return the servername requested by the client in
3459 * this handshake or NULL if none was requested.
3460 */
3461 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3462 return sc->session->ext.hostname;
3463 } else {
3464 /**
3465 * Client side
3466 *
3467 * Before the handshake:
3468 * - If a servername has been set via a call to
3469 * SSL_set_tlsext_host_name() then it will return that servername
3470 * - If one has not been set, but a TLSv1.2 resumption is being
3471 * attempted and the session from the original handshake had a
3472 * servername accepted by the server then it will return that
3473 * servername
3474 * - Otherwise it returns NULL
3475 *
3476 * During/after the handshake (TLSv1.2 or below resumption occurred):
3477 * - If the session from the original handshake had a servername accepted
3478 * by the server then it will return that servername.
3479 * - Otherwise it returns the servername set via
3480 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3481 *
3482 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3483 * - It will return the servername set via SSL_set_tlsext_host_name()
3484 * (or NULL if it was not called).
3485 */
3486 if (SSL_in_before(s)) {
3487 if (sc->ext.hostname == NULL
3488 && sc->session != NULL
3489 && sc->session->ssl_version != TLS1_3_VERSION)
3490 return sc->session->ext.hostname;
3491 } else {
3492 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3493 && sc->session->ext.hostname != NULL)
3494 return sc->session->ext.hostname;
3495 }
3496 }
3497
3498 return sc->ext.hostname;
3499 }
3500
3501 int SSL_get_servername_type(const SSL *s)
3502 {
3503 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3504 return TLSEXT_NAMETYPE_host_name;
3505 return -1;
3506 }
3507
3508 /*
3509 * SSL_select_next_proto implements the standard protocol selection. It is
3510 * expected that this function is called from the callback set by
3511 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3512 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3513 * not included in the length. A byte string of length 0 is invalid. No byte
3514 * string may be truncated. The current, but experimental algorithm for
3515 * selecting the protocol is: 1) If the server doesn't support NPN then this
3516 * is indicated to the callback. In this case, the client application has to
3517 * abort the connection or have a default application level protocol. 2) If
3518 * the server supports NPN, but advertises an empty list then the client
3519 * selects the first protocol in its list, but indicates via the API that this
3520 * fallback case was enacted. 3) Otherwise, the client finds the first
3521 * protocol in the server's list that it supports and selects this protocol.
3522 * This is because it's assumed that the server has better information about
3523 * which protocol a client should use. 4) If the client doesn't support any
3524 * of the server's advertised protocols, then this is treated the same as
3525 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3526 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3527 */
3528 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3529 const unsigned char *server,
3530 unsigned int server_len,
3531 const unsigned char *client, unsigned int client_len)
3532 {
3533 unsigned int i, j;
3534 const unsigned char *result;
3535 int status = OPENSSL_NPN_UNSUPPORTED;
3536
3537 /*
3538 * For each protocol in server preference order, see if we support it.
3539 */
3540 for (i = 0; i < server_len;) {
3541 for (j = 0; j < client_len;) {
3542 if (server[i] == client[j] &&
3543 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3544 /* We found a match */
3545 result = &server[i];
3546 status = OPENSSL_NPN_NEGOTIATED;
3547 goto found;
3548 }
3549 j += client[j];
3550 j++;
3551 }
3552 i += server[i];
3553 i++;
3554 }
3555
3556 /* There's no overlap between our protocols and the server's list. */
3557 result = client;
3558 status = OPENSSL_NPN_NO_OVERLAP;
3559
3560 found:
3561 *out = (unsigned char *)result + 1;
3562 *outlen = result[0];
3563 return status;
3564 }
3565
3566 #ifndef OPENSSL_NO_NEXTPROTONEG
3567 /*
3568 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3569 * client's requested protocol for this connection and returns 0. If the
3570 * client didn't request any protocol, then *data is set to NULL. Note that
3571 * the client can request any protocol it chooses. The value returned from
3572 * this function need not be a member of the list of supported protocols
3573 * provided by the callback.
3574 */
3575 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3576 unsigned *len)
3577 {
3578 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3579
3580 if (sc == NULL) {
3581 /* We have no other way to indicate error */
3582 *data = NULL;
3583 *len = 0;
3584 return;
3585 }
3586
3587 *data = sc->ext.npn;
3588 if (*data == NULL) {
3589 *len = 0;
3590 } else {
3591 *len = (unsigned int)sc->ext.npn_len;
3592 }
3593 }
3594
3595 /*
3596 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3597 * a TLS server needs a list of supported protocols for Next Protocol
3598 * Negotiation. The returned list must be in wire format. The list is
3599 * returned by setting |out| to point to it and |outlen| to its length. This
3600 * memory will not be modified, but one should assume that the SSL* keeps a
3601 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3602 * wishes to advertise. Otherwise, no such extension will be included in the
3603 * ServerHello.
3604 */
3605 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3606 SSL_CTX_npn_advertised_cb_func cb,
3607 void *arg)
3608 {
3609 if (IS_QUIC_CTX(ctx))
3610 /* NPN not allowed for QUIC */
3611 return;
3612
3613 ctx->ext.npn_advertised_cb = cb;
3614 ctx->ext.npn_advertised_cb_arg = arg;
3615 }
3616
3617 /*
3618 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3619 * client needs to select a protocol from the server's provided list. |out|
3620 * must be set to point to the selected protocol (which may be within |in|).
3621 * The length of the protocol name must be written into |outlen|. The
3622 * server's advertised protocols are provided in |in| and |inlen|. The
3623 * callback can assume that |in| is syntactically valid. The client must
3624 * select a protocol. It is fatal to the connection if this callback returns
3625 * a value other than SSL_TLSEXT_ERR_OK.
3626 */
3627 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3628 SSL_CTX_npn_select_cb_func cb,
3629 void *arg)
3630 {
3631 if (IS_QUIC_CTX(ctx))
3632 /* NPN not allowed for QUIC */
3633 return;
3634
3635 ctx->ext.npn_select_cb = cb;
3636 ctx->ext.npn_select_cb_arg = arg;
3637 }
3638 #endif
3639
3640 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3641 {
3642 unsigned int idx;
3643
3644 if (protos_len < 2 || protos == NULL)
3645 return 0;
3646
3647 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3648 if (protos[idx] == 0)
3649 return 0;
3650 }
3651 return idx == protos_len;
3652 }
3653 /*
3654 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3655 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3656 * length-prefixed strings). Returns 0 on success.
3657 */
3658 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3659 unsigned int protos_len)
3660 {
3661 unsigned char *alpn;
3662
3663 if (protos_len == 0 || protos == NULL) {
3664 OPENSSL_free(ctx->ext.alpn);
3665 ctx->ext.alpn = NULL;
3666 ctx->ext.alpn_len = 0;
3667 return 0;
3668 }
3669 /* Not valid per RFC */
3670 if (!alpn_value_ok(protos, protos_len))
3671 return 1;
3672
3673 alpn = OPENSSL_memdup(protos, protos_len);
3674 if (alpn == NULL)
3675 return 1;
3676 OPENSSL_free(ctx->ext.alpn);
3677 ctx->ext.alpn = alpn;
3678 ctx->ext.alpn_len = protos_len;
3679
3680 return 0;
3681 }
3682
3683 /*
3684 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3685 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3686 * length-prefixed strings). Returns 0 on success.
3687 */
3688 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3689 unsigned int protos_len)
3690 {
3691 unsigned char *alpn;
3692 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3693
3694 if (sc == NULL)
3695 return 1;
3696
3697 if (protos_len == 0 || protos == NULL) {
3698 OPENSSL_free(sc->ext.alpn);
3699 sc->ext.alpn = NULL;
3700 sc->ext.alpn_len = 0;
3701 return 0;
3702 }
3703 /* Not valid per RFC */
3704 if (!alpn_value_ok(protos, protos_len))
3705 return 1;
3706
3707 alpn = OPENSSL_memdup(protos, protos_len);
3708 if (alpn == NULL)
3709 return 1;
3710 OPENSSL_free(sc->ext.alpn);
3711 sc->ext.alpn = alpn;
3712 sc->ext.alpn_len = protos_len;
3713
3714 return 0;
3715 }
3716
3717 /*
3718 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3719 * called during ClientHello processing in order to select an ALPN protocol
3720 * from the client's list of offered protocols.
3721 */
3722 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3723 SSL_CTX_alpn_select_cb_func cb,
3724 void *arg)
3725 {
3726 ctx->ext.alpn_select_cb = cb;
3727 ctx->ext.alpn_select_cb_arg = arg;
3728 }
3729
3730 /*
3731 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3732 * On return it sets |*data| to point to |*len| bytes of protocol name
3733 * (not including the leading length-prefix byte). If the server didn't
3734 * respond with a negotiated protocol then |*len| will be zero.
3735 */
3736 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3737 unsigned int *len)
3738 {
3739 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3740
3741 if (sc == NULL) {
3742 /* We have no other way to indicate error */
3743 *data = NULL;
3744 *len = 0;
3745 return;
3746 }
3747
3748 *data = sc->s3.alpn_selected;
3749 if (*data == NULL)
3750 *len = 0;
3751 else
3752 *len = (unsigned int)sc->s3.alpn_selected_len;
3753 }
3754
3755 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3756 const char *label, size_t llen,
3757 const unsigned char *context, size_t contextlen,
3758 int use_context)
3759 {
3760 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3761
3762 if (sc == NULL)
3763 return -1;
3764
3765 if (sc->session == NULL
3766 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3767 return -1;
3768
3769 return sc->ssl.method->ssl3_enc->export_keying_material(sc, out, olen, label,
3770 llen, context,
3771 contextlen,
3772 use_context);
3773 }
3774
3775 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3776 const char *label, size_t llen,
3777 const unsigned char *context,
3778 size_t contextlen)
3779 {
3780 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3781
3782 if (sc == NULL)
3783 return -1;
3784
3785 if (sc->version != TLS1_3_VERSION)
3786 return 0;
3787
3788 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3789 context, contextlen);
3790 }
3791
3792 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3793 {
3794 const unsigned char *session_id = a->session_id;
3795 unsigned long l;
3796 unsigned char tmp_storage[4];
3797
3798 if (a->session_id_length < sizeof(tmp_storage)) {
3799 memset(tmp_storage, 0, sizeof(tmp_storage));
3800 memcpy(tmp_storage, a->session_id, a->session_id_length);
3801 session_id = tmp_storage;
3802 }
3803
3804 l = (unsigned long)
3805 ((unsigned long)session_id[0]) |
3806 ((unsigned long)session_id[1] << 8L) |
3807 ((unsigned long)session_id[2] << 16L) |
3808 ((unsigned long)session_id[3] << 24L);
3809 return l;
3810 }
3811
3812 /*
3813 * NB: If this function (or indeed the hash function which uses a sort of
3814 * coarser function than this one) is changed, ensure
3815 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3816 * being able to construct an SSL_SESSION that will collide with any existing
3817 * session with a matching session ID.
3818 */
3819 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3820 {
3821 if (a->ssl_version != b->ssl_version)
3822 return 1;
3823 if (a->session_id_length != b->session_id_length)
3824 return 1;
3825 return memcmp(a->session_id, b->session_id, a->session_id_length);
3826 }
3827
3828 /*
3829 * These wrapper functions should remain rather than redeclaring
3830 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3831 * variable. The reason is that the functions aren't static, they're exposed
3832 * via ssl.h.
3833 */
3834
3835 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3836 const SSL_METHOD *meth)
3837 {
3838 SSL_CTX *ret = NULL;
3839 #ifndef OPENSSL_NO_COMP_ALG
3840 int i;
3841 #endif
3842
3843 if (meth == NULL) {
3844 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3845 return NULL;
3846 }
3847
3848 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3849 return NULL;
3850
3851 /* Doing this for the run once effect */
3852 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3853 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3854 goto err;
3855 }
3856
3857 ret = OPENSSL_zalloc(sizeof(*ret));
3858 if (ret == NULL)
3859 return NULL;
3860
3861 /* Init the reference counting before any call to SSL_CTX_free */
3862 if (!CRYPTO_NEW_REF(&ret->references, 1)) {
3863 OPENSSL_free(ret);
3864 return NULL;
3865 }
3866
3867 ret->lock = CRYPTO_THREAD_lock_new();
3868 if (ret->lock == NULL) {
3869 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3870 goto err;
3871 }
3872
3873 #ifdef TSAN_REQUIRES_LOCKING
3874 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3875 if (ret->tsan_lock == NULL) {
3876 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3877 goto err;
3878 }
3879 #endif
3880
3881 ret->libctx = libctx;
3882 if (propq != NULL) {
3883 ret->propq = OPENSSL_strdup(propq);
3884 if (ret->propq == NULL)
3885 goto err;
3886 }
3887
3888 ret->method = meth;
3889 ret->min_proto_version = 0;
3890 ret->max_proto_version = 0;
3891 ret->mode = SSL_MODE_AUTO_RETRY;
3892 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3893 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3894 /* We take the system default. */
3895 ret->session_timeout = meth->get_timeout();
3896 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3897 ret->verify_mode = SSL_VERIFY_NONE;
3898
3899 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3900 if (ret->sessions == NULL) {
3901 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3902 goto err;
3903 }
3904 ret->cert_store = X509_STORE_new();
3905 if (ret->cert_store == NULL) {
3906 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3907 goto err;
3908 }
3909 #ifndef OPENSSL_NO_CT
3910 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3911 if (ret->ctlog_store == NULL) {
3912 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3913 goto err;
3914 }
3915 #endif
3916
3917 /* initialize cipher/digest methods table */
3918 if (!ssl_load_ciphers(ret)) {
3919 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3920 goto err;
3921 }
3922
3923 if (!ssl_load_groups(ret)) {
3924 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3925 goto err;
3926 }
3927
3928 /* load provider sigalgs */
3929 if (!ssl_load_sigalgs(ret)) {
3930 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3931 goto err;
3932 }
3933
3934 /* initialise sig algs */
3935 if (!ssl_setup_sigalgs(ret)) {
3936 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3937 goto err;
3938 }
3939
3940 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3941 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3942 goto err;
3943 }
3944
3945 if ((ret->cert = ssl_cert_new(SSL_PKEY_NUM + ret->sigalg_list_len)) == NULL) {
3946 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3947 goto err;
3948 }
3949
3950 if (!ssl_create_cipher_list(ret,
3951 ret->tls13_ciphersuites,
3952 &ret->cipher_list, &ret->cipher_list_by_id,
3953 OSSL_default_cipher_list(), ret->cert)
3954 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3955 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3956 goto err;
3957 }
3958
3959 ret->param = X509_VERIFY_PARAM_new();
3960 if (ret->param == NULL) {
3961 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3962 goto err;
3963 }
3964
3965 /*
3966 * If these aren't available from the provider we'll get NULL returns.
3967 * That's fine but will cause errors later if SSLv3 is negotiated
3968 */
3969 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3970 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3971
3972 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3973 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3974 goto err;
3975 }
3976
3977 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3978 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3979 goto err;
3980 }
3981
3982 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3983 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3984 goto err;
3985 }
3986
3987 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3988 goto err;
3989
3990 /* No compression for DTLS */
3991 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3992 ret->comp_methods = SSL_COMP_get_compression_methods();
3993
3994 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3995 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3996
3997 /* Setup RFC5077 ticket keys */
3998 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3999 sizeof(ret->ext.tick_key_name), 0) <= 0)
4000 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
4001 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
4002 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
4003 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
4004 ret->options |= SSL_OP_NO_TICKET;
4005
4006 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
4007 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
4008 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
4009 goto err;
4010 }
4011
4012 #ifndef OPENSSL_NO_SRP
4013 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
4014 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
4015 goto err;
4016 }
4017 #endif
4018 #ifndef OPENSSL_NO_ENGINE
4019 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
4020 # define eng_strx(x) #x
4021 # define eng_str(x) eng_strx(x)
4022 /* Use specific client engine automatically... ignore errors */
4023 {
4024 ENGINE *eng;
4025 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
4026 if (!eng) {
4027 ERR_clear_error();
4028 ENGINE_load_builtin_engines();
4029 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
4030 }
4031 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
4032 ERR_clear_error();
4033 }
4034 # endif
4035 #endif
4036
4037 #ifndef OPENSSL_NO_COMP_ALG
4038 /*
4039 * Set the default order: brotli, zlib, zstd
4040 * Including only those enabled algorithms
4041 */
4042 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
4043 i = 0;
4044 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
4045 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
4046 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
4047 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
4048 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
4049 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
4050 #endif
4051 /*
4052 * Disable compression by default to prevent CRIME. Applications can
4053 * re-enable compression by configuring
4054 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
4055 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
4056 * middlebox compatibility by default. This may be disabled by default in
4057 * a later OpenSSL version.
4058 */
4059 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
4060
4061 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
4062
4063 /*
4064 * We cannot usefully set a default max_early_data here (which gets
4065 * propagated in SSL_new(), for the following reason: setting the
4066 * SSL field causes tls_construct_stoc_early_data() to tell the
4067 * client that early data will be accepted when constructing a TLS 1.3
4068 * session ticket, and the client will accordingly send us early data
4069 * when using that ticket (if the client has early data to send).
4070 * However, in order for the early data to actually be consumed by
4071 * the application, the application must also have calls to
4072 * SSL_read_early_data(); otherwise we'll just skip past the early data
4073 * and ignore it. So, since the application must add calls to
4074 * SSL_read_early_data(), we also require them to add
4075 * calls to SSL_CTX_set_max_early_data() in order to use early data,
4076 * eliminating the bandwidth-wasting early data in the case described
4077 * above.
4078 */
4079 ret->max_early_data = 0;
4080
4081 /*
4082 * Default recv_max_early_data is a fully loaded single record. Could be
4083 * split across multiple records in practice. We set this differently to
4084 * max_early_data so that, in the default case, we do not advertise any
4085 * support for early_data, but if a client were to send us some (e.g.
4086 * because of an old, stale ticket) then we will tolerate it and skip over
4087 * it.
4088 */
4089 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
4090
4091 /* By default we send two session tickets automatically in TLSv1.3 */
4092 ret->num_tickets = 2;
4093
4094 ssl_ctx_system_config(ret);
4095
4096 return ret;
4097 err:
4098 SSL_CTX_free(ret);
4099 return NULL;
4100 }
4101
4102 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
4103 {
4104 return SSL_CTX_new_ex(NULL, NULL, meth);
4105 }
4106
4107 int SSL_CTX_up_ref(SSL_CTX *ctx)
4108 {
4109 int i;
4110
4111 if (CRYPTO_UP_REF(&ctx->references, &i) <= 0)
4112 return 0;
4113
4114 REF_PRINT_COUNT("SSL_CTX", ctx);
4115 REF_ASSERT_ISNT(i < 2);
4116 return ((i > 1) ? 1 : 0);
4117 }
4118
4119 void SSL_CTX_free(SSL_CTX *a)
4120 {
4121 int i;
4122 size_t j;
4123
4124 if (a == NULL)
4125 return;
4126
4127 CRYPTO_DOWN_REF(&a->references, &i);
4128 REF_PRINT_COUNT("SSL_CTX", a);
4129 if (i > 0)
4130 return;
4131 REF_ASSERT_ISNT(i < 0);
4132
4133 X509_VERIFY_PARAM_free(a->param);
4134 dane_ctx_final(&a->dane);
4135
4136 /*
4137 * Free internal session cache. However: the remove_cb() may reference
4138 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
4139 * after the sessions were flushed.
4140 * As the ex_data handling routines might also touch the session cache,
4141 * the most secure solution seems to be: empty (flush) the cache, then
4142 * free ex_data, then finally free the cache.
4143 * (See ticket [openssl.org #212].)
4144 */
4145 if (a->sessions != NULL)
4146 SSL_CTX_flush_sessions(a, 0);
4147
4148 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4149 lh_SSL_SESSION_free(a->sessions);
4150 X509_STORE_free(a->cert_store);
4151 #ifndef OPENSSL_NO_CT
4152 CTLOG_STORE_free(a->ctlog_store);
4153 #endif
4154 sk_SSL_CIPHER_free(a->cipher_list);
4155 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4156 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4157 ssl_cert_free(a->cert);
4158 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4159 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4160 OSSL_STACK_OF_X509_free(a->extra_certs);
4161 a->comp_methods = NULL;
4162 #ifndef OPENSSL_NO_SRTP
4163 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4164 #endif
4165 #ifndef OPENSSL_NO_SRP
4166 ssl_ctx_srp_ctx_free_intern(a);
4167 #endif
4168 #ifndef OPENSSL_NO_ENGINE
4169 tls_engine_finish(a->client_cert_engine);
4170 #endif
4171
4172 OPENSSL_free(a->ext.ecpointformats);
4173 OPENSSL_free(a->ext.supportedgroups);
4174 OPENSSL_free(a->ext.supported_groups_default);
4175 OPENSSL_free(a->ext.alpn);
4176 OPENSSL_secure_free(a->ext.secure);
4177
4178 ssl_evp_md_free(a->md5);
4179 ssl_evp_md_free(a->sha1);
4180
4181 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4182 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4183 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4184 ssl_evp_md_free(a->ssl_digest_methods[j]);
4185 for (j = 0; j < a->group_list_len; j++) {
4186 OPENSSL_free(a->group_list[j].tlsname);
4187 OPENSSL_free(a->group_list[j].realname);
4188 OPENSSL_free(a->group_list[j].algorithm);
4189 }
4190 OPENSSL_free(a->group_list);
4191 for (j = 0; j < a->sigalg_list_len; j++) {
4192 OPENSSL_free(a->sigalg_list[j].name);
4193 OPENSSL_free(a->sigalg_list[j].sigalg_name);
4194 OPENSSL_free(a->sigalg_list[j].sigalg_oid);
4195 OPENSSL_free(a->sigalg_list[j].sig_name);
4196 OPENSSL_free(a->sigalg_list[j].sig_oid);
4197 OPENSSL_free(a->sigalg_list[j].hash_name);
4198 OPENSSL_free(a->sigalg_list[j].hash_oid);
4199 OPENSSL_free(a->sigalg_list[j].keytype);
4200 OPENSSL_free(a->sigalg_list[j].keytype_oid);
4201 }
4202 OPENSSL_free(a->sigalg_list);
4203 OPENSSL_free(a->ssl_cert_info);
4204
4205 OPENSSL_free(a->sigalg_lookup_cache);
4206 OPENSSL_free(a->tls12_sigalgs);
4207
4208 OPENSSL_free(a->client_cert_type);
4209 OPENSSL_free(a->server_cert_type);
4210
4211 CRYPTO_THREAD_lock_free(a->lock);
4212 CRYPTO_FREE_REF(&a->references);
4213 #ifdef TSAN_REQUIRES_LOCKING
4214 CRYPTO_THREAD_lock_free(a->tsan_lock);
4215 #endif
4216
4217 OPENSSL_free(a->propq);
4218 #ifndef OPENSSL_NO_QLOG
4219 OPENSSL_free(a->qlog_title);
4220 #endif
4221
4222 OPENSSL_free(a);
4223 }
4224
4225 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4226 {
4227 ctx->default_passwd_callback = cb;
4228 }
4229
4230 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4231 {
4232 ctx->default_passwd_callback_userdata = u;
4233 }
4234
4235 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4236 {
4237 return ctx->default_passwd_callback;
4238 }
4239
4240 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4241 {
4242 return ctx->default_passwd_callback_userdata;
4243 }
4244
4245 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4246 {
4247 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4248
4249 if (sc == NULL)
4250 return;
4251
4252 sc->default_passwd_callback = cb;
4253 }
4254
4255 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4256 {
4257 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4258
4259 if (sc == NULL)
4260 return;
4261
4262 sc->default_passwd_callback_userdata = u;
4263 }
4264
4265 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4266 {
4267 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4268
4269 if (sc == NULL)
4270 return NULL;
4271
4272 return sc->default_passwd_callback;
4273 }
4274
4275 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4276 {
4277 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4278
4279 if (sc == NULL)
4280 return NULL;
4281
4282 return sc->default_passwd_callback_userdata;
4283 }
4284
4285 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4286 int (*cb) (X509_STORE_CTX *, void *),
4287 void *arg)
4288 {
4289 ctx->app_verify_callback = cb;
4290 ctx->app_verify_arg = arg;
4291 }
4292
4293 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4294 int (*cb) (int, X509_STORE_CTX *))
4295 {
4296 ctx->verify_mode = mode;
4297 ctx->default_verify_callback = cb;
4298 }
4299
4300 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4301 {
4302 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4303 }
4304
4305 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4306 {
4307 ssl_cert_set_cert_cb(c->cert, cb, arg);
4308 }
4309
4310 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4311 {
4312 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4313
4314 if (sc == NULL)
4315 return;
4316
4317 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4318 }
4319
4320 void ssl_set_masks(SSL_CONNECTION *s)
4321 {
4322 CERT *c = s->cert;
4323 uint32_t *pvalid = s->s3.tmp.valid_flags;
4324 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4325 unsigned long mask_k, mask_a;
4326 int have_ecc_cert, ecdsa_ok;
4327
4328 if (c == NULL)
4329 return;
4330
4331 dh_tmp = (c->dh_tmp != NULL
4332 || c->dh_tmp_cb != NULL
4333 || c->dh_tmp_auto);
4334
4335 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4336 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4337 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4338 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4339 mask_k = 0;
4340 mask_a = 0;
4341
4342 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4343 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4344
4345 #ifndef OPENSSL_NO_GOST
4346 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4347 mask_k |= SSL_kGOST | SSL_kGOST18;
4348 mask_a |= SSL_aGOST12;
4349 }
4350 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4351 mask_k |= SSL_kGOST | SSL_kGOST18;
4352 mask_a |= SSL_aGOST12;
4353 }
4354 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4355 mask_k |= SSL_kGOST;
4356 mask_a |= SSL_aGOST01;
4357 }
4358 #endif
4359
4360 if (rsa_enc)
4361 mask_k |= SSL_kRSA;
4362
4363 if (dh_tmp)
4364 mask_k |= SSL_kDHE;
4365
4366 /*
4367 * If we only have an RSA-PSS certificate allow RSA authentication
4368 * if TLS 1.2 and peer supports it.
4369 */
4370
4371 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4372 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4373 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4374 mask_a |= SSL_aRSA;
4375
4376 if (dsa_sign) {
4377 mask_a |= SSL_aDSS;
4378 }
4379
4380 mask_a |= SSL_aNULL;
4381
4382 /*
4383 * You can do anything with an RPK key, since there's no cert to restrict it
4384 * But we need to check for private keys
4385 */
4386 if (pvalid[SSL_PKEY_RSA] & CERT_PKEY_RPK) {
4387 mask_a |= SSL_aRSA;
4388 mask_k |= SSL_kRSA;
4389 }
4390 if (pvalid[SSL_PKEY_ECC] & CERT_PKEY_RPK)
4391 mask_a |= SSL_aECDSA;
4392 if (TLS1_get_version(&s->ssl) == TLS1_2_VERSION) {
4393 if (pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_RPK)
4394 mask_a |= SSL_aRSA;
4395 if (pvalid[SSL_PKEY_ED25519] & CERT_PKEY_RPK
4396 || pvalid[SSL_PKEY_ED448] & CERT_PKEY_RPK)
4397 mask_a |= SSL_aECDSA;
4398 }
4399
4400 /*
4401 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4402 * depending on the key usage extension.
4403 */
4404 if (have_ecc_cert) {
4405 uint32_t ex_kusage;
4406 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4407 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4408 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4409 ecdsa_ok = 0;
4410 if (ecdsa_ok)
4411 mask_a |= SSL_aECDSA;
4412 }
4413 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4414 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4415 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4416 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4417 mask_a |= SSL_aECDSA;
4418
4419 /* Allow Ed448 for TLS 1.2 if peer supports it */
4420 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4421 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4422 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4423 mask_a |= SSL_aECDSA;
4424
4425 mask_k |= SSL_kECDHE;
4426
4427 #ifndef OPENSSL_NO_PSK
4428 mask_k |= SSL_kPSK;
4429 mask_a |= SSL_aPSK;
4430 if (mask_k & SSL_kRSA)
4431 mask_k |= SSL_kRSAPSK;
4432 if (mask_k & SSL_kDHE)
4433 mask_k |= SSL_kDHEPSK;
4434 if (mask_k & SSL_kECDHE)
4435 mask_k |= SSL_kECDHEPSK;
4436 #endif
4437
4438 s->s3.tmp.mask_k = mask_k;
4439 s->s3.tmp.mask_a = mask_a;
4440 }
4441
4442 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4443 {
4444 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4445 /* key usage, if present, must allow signing */
4446 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4447 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4448 return 0;
4449 }
4450 }
4451 return 1; /* all checks are ok */
4452 }
4453
4454 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4455 const unsigned char **serverinfo,
4456 size_t *serverinfo_length)
4457 {
4458 CERT_PKEY *cpk = s->s3.tmp.cert;
4459 *serverinfo_length = 0;
4460
4461 if (cpk == NULL || cpk->serverinfo == NULL)
4462 return 0;
4463
4464 *serverinfo = cpk->serverinfo;
4465 *serverinfo_length = cpk->serverinfo_length;
4466 return 1;
4467 }
4468
4469 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4470 {
4471 int i;
4472
4473 /*
4474 * If the session_id_length is 0, we are not supposed to cache it, and it
4475 * would be rather hard to do anyway :-)
4476 */
4477 if (s->session->session_id_length == 0)
4478 return;
4479
4480 /*
4481 * If sid_ctx_length is 0 there is no specific application context
4482 * associated with this session, so when we try to resume it and
4483 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4484 * indication that this is actually a session for the proper application
4485 * context, and the *handshake* will fail, not just the resumption attempt.
4486 * Do not cache (on the server) these sessions that are not resumable
4487 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4488 */
4489 if (s->server && s->session->sid_ctx_length == 0
4490 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4491 return;
4492
4493 i = s->session_ctx->session_cache_mode;
4494 if ((i & mode) != 0
4495 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4496 /*
4497 * Add the session to the internal cache. In server side TLSv1.3 we
4498 * normally don't do this because by default it's a full stateless ticket
4499 * with only a dummy session id so there is no reason to cache it,
4500 * unless:
4501 * - we are doing early_data, in which case we cache so that we can
4502 * detect replays
4503 * - the application has set a remove_session_cb so needs to know about
4504 * session timeout events
4505 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4506 */
4507 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4508 && (!SSL_CONNECTION_IS_TLS13(s)
4509 || !s->server
4510 || (s->max_early_data > 0
4511 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4512 || s->session_ctx->remove_session_cb != NULL
4513 || (s->options & SSL_OP_NO_TICKET) != 0))
4514 SSL_CTX_add_session(s->session_ctx, s->session);
4515
4516 /*
4517 * Add the session to the external cache. We do this even in server side
4518 * TLSv1.3 without early data because some applications just want to
4519 * know about the creation of a session and aren't doing a full cache.
4520 */
4521 if (s->session_ctx->new_session_cb != NULL) {
4522 SSL_SESSION_up_ref(s->session);
4523 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4524 s->session))
4525 SSL_SESSION_free(s->session);
4526 }
4527 }
4528
4529 /* auto flush every 255 connections */
4530 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4531 TSAN_QUALIFIER int *stat;
4532
4533 if (mode & SSL_SESS_CACHE_CLIENT)
4534 stat = &s->session_ctx->stats.sess_connect_good;
4535 else
4536 stat = &s->session_ctx->stats.sess_accept_good;
4537 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4538 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4539 }
4540 }
4541
4542 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4543 {
4544 return ctx->method;
4545 }
4546
4547 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4548 {
4549 return s->method;
4550 }
4551
4552 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4553 {
4554 int ret = 1;
4555 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4556
4557 /* Not allowed for QUIC */
4558 if (sc == NULL
4559 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth)
4560 || (s->type == SSL_TYPE_SSL_CONNECTION && IS_QUIC_METHOD(meth)))
4561 return 0;
4562
4563 if (s->method != meth) {
4564 const SSL_METHOD *sm = s->method;
4565 int (*hf) (SSL *) = sc->handshake_func;
4566
4567 if (sm->version == meth->version)
4568 s->method = meth;
4569 else {
4570 sm->ssl_deinit(s);
4571 s->method = meth;
4572 ret = s->method->ssl_init(s);
4573 }
4574
4575 if (hf == sm->ssl_connect)
4576 sc->handshake_func = meth->ssl_connect;
4577 else if (hf == sm->ssl_accept)
4578 sc->handshake_func = meth->ssl_accept;
4579 }
4580 return ret;
4581 }
4582
4583 int SSL_get_error(const SSL *s, int i)
4584 {
4585 return ossl_ssl_get_error(s, i, /*check_err=*/1);
4586 }
4587
4588 int ossl_ssl_get_error(const SSL *s, int i, int check_err)
4589 {
4590 int reason;
4591 unsigned long l;
4592 BIO *bio;
4593 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4594
4595 if (i > 0)
4596 return SSL_ERROR_NONE;
4597
4598 #ifndef OPENSSL_NO_QUIC
4599 if (IS_QUIC(s)) {
4600 reason = ossl_quic_get_error(s, i);
4601 if (reason != SSL_ERROR_NONE)
4602 return reason;
4603 }
4604 #endif
4605
4606 if (sc == NULL)
4607 return SSL_ERROR_SSL;
4608
4609 /*
4610 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4611 * where we do encode the error
4612 */
4613 if (check_err && (l = ERR_peek_error()) != 0) {
4614 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4615 return SSL_ERROR_SYSCALL;
4616 else
4617 return SSL_ERROR_SSL;
4618 }
4619
4620 #ifndef OPENSSL_NO_QUIC
4621 if (!IS_QUIC(s))
4622 #endif
4623 {
4624 if (SSL_want_read(s)) {
4625 bio = SSL_get_rbio(s);
4626 if (BIO_should_read(bio))
4627 return SSL_ERROR_WANT_READ;
4628 else if (BIO_should_write(bio))
4629 /*
4630 * This one doesn't make too much sense ... We never try to
4631 * write to the rbio, and an application program where rbio and
4632 * wbio are separate couldn't even know what it should wait for.
4633 * However if we ever set s->rwstate incorrectly (so that we
4634 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4635 * and wbio *are* the same, this test works around that bug; so
4636 * it might be safer to keep it.
4637 */
4638 return SSL_ERROR_WANT_WRITE;
4639 else if (BIO_should_io_special(bio)) {
4640 reason = BIO_get_retry_reason(bio);
4641 if (reason == BIO_RR_CONNECT)
4642 return SSL_ERROR_WANT_CONNECT;
4643 else if (reason == BIO_RR_ACCEPT)
4644 return SSL_ERROR_WANT_ACCEPT;
4645 else
4646 return SSL_ERROR_SYSCALL; /* unknown */
4647 }
4648 }
4649
4650 if (SSL_want_write(s)) {
4651 /*
4652 * Access wbio directly - in order to use the buffered bio if
4653 * present
4654 */
4655 bio = sc->wbio;
4656 if (BIO_should_write(bio))
4657 return SSL_ERROR_WANT_WRITE;
4658 else if (BIO_should_read(bio))
4659 /*
4660 * See above (SSL_want_read(s) with BIO_should_write(bio))
4661 */
4662 return SSL_ERROR_WANT_READ;
4663 else if (BIO_should_io_special(bio)) {
4664 reason = BIO_get_retry_reason(bio);
4665 if (reason == BIO_RR_CONNECT)
4666 return SSL_ERROR_WANT_CONNECT;
4667 else if (reason == BIO_RR_ACCEPT)
4668 return SSL_ERROR_WANT_ACCEPT;
4669 else
4670 return SSL_ERROR_SYSCALL;
4671 }
4672 }
4673 }
4674
4675 if (SSL_want_x509_lookup(s))
4676 return SSL_ERROR_WANT_X509_LOOKUP;
4677 if (SSL_want_retry_verify(s))
4678 return SSL_ERROR_WANT_RETRY_VERIFY;
4679 if (SSL_want_async(s))
4680 return SSL_ERROR_WANT_ASYNC;
4681 if (SSL_want_async_job(s))
4682 return SSL_ERROR_WANT_ASYNC_JOB;
4683 if (SSL_want_client_hello_cb(s))
4684 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4685
4686 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4687 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4688 return SSL_ERROR_ZERO_RETURN;
4689
4690 return SSL_ERROR_SYSCALL;
4691 }
4692
4693 static int ssl_do_handshake_intern(void *vargs)
4694 {
4695 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4696 SSL *s = args->s;
4697 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4698
4699 if (sc == NULL)
4700 return -1;
4701
4702 return sc->handshake_func(s);
4703 }
4704
4705 int SSL_do_handshake(SSL *s)
4706 {
4707 int ret = 1;
4708 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4709
4710 #ifndef OPENSSL_NO_QUIC
4711 if (IS_QUIC(s))
4712 return ossl_quic_do_handshake(s);
4713 #endif
4714
4715 if (sc->handshake_func == NULL) {
4716 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4717 return -1;
4718 }
4719
4720 ossl_statem_check_finish_init(sc, -1);
4721
4722 s->method->ssl_renegotiate_check(s, 0);
4723
4724 if (SSL_in_init(s) || SSL_in_before(s)) {
4725 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4726 struct ssl_async_args args;
4727
4728 memset(&args, 0, sizeof(args));
4729 args.s = s;
4730
4731 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4732 } else {
4733 ret = sc->handshake_func(s);
4734 }
4735 }
4736 return ret;
4737 }
4738
4739 void SSL_set_accept_state(SSL *s)
4740 {
4741 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4742
4743 #ifndef OPENSSL_NO_QUIC
4744 if (IS_QUIC(s)) {
4745 ossl_quic_set_accept_state(s);
4746 return;
4747 }
4748 #endif
4749
4750 sc->server = 1;
4751 sc->shutdown = 0;
4752 ossl_statem_clear(sc);
4753 sc->handshake_func = s->method->ssl_accept;
4754 /* Ignore return value. Its a void public API function */
4755 RECORD_LAYER_reset(&sc->rlayer);
4756 }
4757
4758 void SSL_set_connect_state(SSL *s)
4759 {
4760 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4761
4762 #ifndef OPENSSL_NO_QUIC
4763 if (IS_QUIC(s)) {
4764 ossl_quic_set_connect_state(s);
4765 return;
4766 }
4767 #endif
4768
4769 sc->server = 0;
4770 sc->shutdown = 0;
4771 ossl_statem_clear(sc);
4772 sc->handshake_func = s->method->ssl_connect;
4773 /* Ignore return value. Its a void public API function */
4774 RECORD_LAYER_reset(&sc->rlayer);
4775 }
4776
4777 int ssl_undefined_function(SSL *s)
4778 {
4779 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4780 return 0;
4781 }
4782
4783 int ssl_undefined_void_function(void)
4784 {
4785 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4786 return 0;
4787 }
4788
4789 int ssl_undefined_const_function(const SSL *s)
4790 {
4791 return 0;
4792 }
4793
4794 const char *ssl_protocol_to_string(int version)
4795 {
4796 switch (version)
4797 {
4798 case TLS1_3_VERSION:
4799 return "TLSv1.3";
4800
4801 case TLS1_2_VERSION:
4802 return "TLSv1.2";
4803
4804 case TLS1_1_VERSION:
4805 return "TLSv1.1";
4806
4807 case TLS1_VERSION:
4808 return "TLSv1";
4809
4810 case SSL3_VERSION:
4811 return "SSLv3";
4812
4813 case DTLS1_BAD_VER:
4814 return "DTLSv0.9";
4815
4816 case DTLS1_VERSION:
4817 return "DTLSv1";
4818
4819 case DTLS1_2_VERSION:
4820 return "DTLSv1.2";
4821
4822 default:
4823 return "unknown";
4824 }
4825 }
4826
4827 const char *SSL_get_version(const SSL *s)
4828 {
4829 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4830
4831 #ifndef OPENSSL_NO_QUIC
4832 /* We only support QUICv1 - so if its QUIC its QUICv1 */
4833 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
4834 return "QUICv1";
4835 #endif
4836
4837 if (sc == NULL)
4838 return NULL;
4839
4840 return ssl_protocol_to_string(sc->version);
4841 }
4842
4843 __owur int SSL_get_handshake_rtt(const SSL *s, uint64_t *rtt)
4844 {
4845 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4846
4847 if (sc == NULL)
4848 return -1;
4849 if (sc->ts_msg_write.t <= 0 || sc->ts_msg_read.t <= 0)
4850 return 0; /* data not (yet) available */
4851 if (sc->ts_msg_read.t < sc->ts_msg_write.t)
4852 return -1;
4853
4854 *rtt = ossl_time2us(ossl_time_subtract(sc->ts_msg_read, sc->ts_msg_write));
4855 return 1;
4856 }
4857
4858 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4859 {
4860 STACK_OF(X509_NAME) *sk;
4861 X509_NAME *xn;
4862 int i;
4863
4864 if (src == NULL) {
4865 *dst = NULL;
4866 return 1;
4867 }
4868
4869 if ((sk = sk_X509_NAME_new_null()) == NULL)
4870 return 0;
4871 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4872 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4873 if (xn == NULL) {
4874 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4875 return 0;
4876 }
4877 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4878 X509_NAME_free(xn);
4879 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4880 return 0;
4881 }
4882 }
4883 *dst = sk;
4884
4885 return 1;
4886 }
4887
4888 SSL *SSL_dup(SSL *s)
4889 {
4890 SSL *ret;
4891 int i;
4892 /* TODO(QUIC FUTURE): Add a SSL_METHOD function for duplication */
4893 SSL_CONNECTION *retsc;
4894 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4895
4896 if (sc == NULL)
4897 return NULL;
4898
4899 /* If we're not quiescent, just up_ref! */
4900 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4901 CRYPTO_UP_REF(&s->references, &i);
4902 return s;
4903 }
4904
4905 /*
4906 * Otherwise, copy configuration state, and session if set.
4907 */
4908 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4909 return NULL;
4910 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4911 goto err;
4912
4913 if (sc->session != NULL) {
4914 /*
4915 * Arranges to share the same session via up_ref. This "copies"
4916 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4917 */
4918 if (!SSL_copy_session_id(ret, s))
4919 goto err;
4920 } else {
4921 /*
4922 * No session has been established yet, so we have to expect that
4923 * s->cert or ret->cert will be changed later -- they should not both
4924 * point to the same object, and thus we can't use
4925 * SSL_copy_session_id.
4926 */
4927 if (!SSL_set_ssl_method(ret, s->method))
4928 goto err;
4929
4930 if (sc->cert != NULL) {
4931 ssl_cert_free(retsc->cert);
4932 retsc->cert = ssl_cert_dup(sc->cert);
4933 if (retsc->cert == NULL)
4934 goto err;
4935 }
4936
4937 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4938 (int)sc->sid_ctx_length))
4939 goto err;
4940 }
4941
4942 if (!ssl_dane_dup(retsc, sc))
4943 goto err;
4944 retsc->version = sc->version;
4945 retsc->options = sc->options;
4946 retsc->min_proto_version = sc->min_proto_version;
4947 retsc->max_proto_version = sc->max_proto_version;
4948 retsc->mode = sc->mode;
4949 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4950 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4951 retsc->msg_callback = sc->msg_callback;
4952 retsc->msg_callback_arg = sc->msg_callback_arg;
4953 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4954 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4955 retsc->generate_session_id = sc->generate_session_id;
4956
4957 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4958
4959 /* copy app data, a little dangerous perhaps */
4960 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4961 goto err;
4962
4963 retsc->server = sc->server;
4964 if (sc->handshake_func) {
4965 if (sc->server)
4966 SSL_set_accept_state(ret);
4967 else
4968 SSL_set_connect_state(ret);
4969 }
4970 retsc->shutdown = sc->shutdown;
4971 retsc->hit = sc->hit;
4972
4973 retsc->default_passwd_callback = sc->default_passwd_callback;
4974 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4975
4976 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4977
4978 /* dup the cipher_list and cipher_list_by_id stacks */
4979 if (sc->cipher_list != NULL) {
4980 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4981 goto err;
4982 }
4983 if (sc->cipher_list_by_id != NULL)
4984 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4985 == NULL)
4986 goto err;
4987
4988 /* Dup the client_CA list */
4989 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4990 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4991 goto err;
4992
4993 return ret;
4994
4995 err:
4996 SSL_free(ret);
4997 return NULL;
4998 }
4999
5000 X509 *SSL_get_certificate(const SSL *s)
5001 {
5002 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5003
5004 if (sc == NULL)
5005 return NULL;
5006
5007 if (sc->cert != NULL)
5008 return sc->cert->key->x509;
5009 else
5010 return NULL;
5011 }
5012
5013 EVP_PKEY *SSL_get_privatekey(const SSL *s)
5014 {
5015 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5016
5017 if (sc == NULL)
5018 return NULL;
5019
5020 if (sc->cert != NULL)
5021 return sc->cert->key->privatekey;
5022 else
5023 return NULL;
5024 }
5025
5026 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
5027 {
5028 if (ctx->cert != NULL)
5029 return ctx->cert->key->x509;
5030 else
5031 return NULL;
5032 }
5033
5034 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
5035 {
5036 if (ctx->cert != NULL)
5037 return ctx->cert->key->privatekey;
5038 else
5039 return NULL;
5040 }
5041
5042 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
5043 {
5044 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5045
5046 if (sc == NULL)
5047 return NULL;
5048
5049 if ((sc->session != NULL) && (sc->session->cipher != NULL))
5050 return sc->session->cipher;
5051 return NULL;
5052 }
5053
5054 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
5055 {
5056 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5057
5058 if (sc == NULL)
5059 return NULL;
5060
5061 return sc->s3.tmp.new_cipher;
5062 }
5063
5064 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
5065 {
5066 #ifndef OPENSSL_NO_COMP
5067 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5068
5069 if (sc == NULL)
5070 return NULL;
5071
5072 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
5073 #else
5074 return NULL;
5075 #endif
5076 }
5077
5078 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
5079 {
5080 #ifndef OPENSSL_NO_COMP
5081 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5082
5083 if (sc == NULL)
5084 return NULL;
5085
5086 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
5087 #else
5088 return NULL;
5089 #endif
5090 }
5091
5092 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
5093 {
5094 BIO *bbio;
5095
5096 if (s->bbio != NULL) {
5097 /* Already buffered. */
5098 return 1;
5099 }
5100
5101 bbio = BIO_new(BIO_f_buffer());
5102 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
5103 BIO_free(bbio);
5104 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
5105 return 0;
5106 }
5107 s->bbio = bbio;
5108 s->wbio = BIO_push(bbio, s->wbio);
5109
5110 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
5111
5112 return 1;
5113 }
5114
5115 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
5116 {
5117 /* callers ensure s is never null */
5118 if (s->bbio == NULL)
5119 return 1;
5120
5121 s->wbio = BIO_pop(s->wbio);
5122 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
5123
5124 BIO_free(s->bbio);
5125 s->bbio = NULL;
5126
5127 return 1;
5128 }
5129
5130 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
5131 {
5132 ctx->quiet_shutdown = mode;
5133 }
5134
5135 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
5136 {
5137 return ctx->quiet_shutdown;
5138 }
5139
5140 void SSL_set_quiet_shutdown(SSL *s, int mode)
5141 {
5142 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
5143
5144 /* Not supported with QUIC */
5145 if (sc == NULL)
5146 return;
5147
5148 sc->quiet_shutdown = mode;
5149 }
5150
5151 int SSL_get_quiet_shutdown(const SSL *s)
5152 {
5153 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5154
5155 /* Not supported with QUIC */
5156 if (sc == NULL)
5157 return 0;
5158
5159 return sc->quiet_shutdown;
5160 }
5161
5162 void SSL_set_shutdown(SSL *s, int mode)
5163 {
5164 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
5165
5166 /* Not supported with QUIC */
5167 if (sc == NULL)
5168 return;
5169
5170 sc->shutdown = mode;
5171 }
5172
5173 int SSL_get_shutdown(const SSL *s)
5174 {
5175 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
5176
5177 #ifndef OPENSSL_NO_QUIC
5178 /* QUIC: Just indicate whether the connection was shutdown cleanly. */
5179 if (IS_QUIC(s))
5180 return ossl_quic_get_shutdown(s);
5181 #endif
5182
5183 if (sc == NULL)
5184 return 0;
5185
5186 return sc->shutdown;
5187 }
5188
5189 int SSL_version(const SSL *s)
5190 {
5191 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5192
5193 #ifndef OPENSSL_NO_QUIC
5194 /* We only support QUICv1 - so if its QUIC its QUICv1 */
5195 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
5196 return OSSL_QUIC1_VERSION;
5197 #endif
5198 if (sc == NULL)
5199 return 0;
5200
5201 return sc->version;
5202 }
5203
5204 int SSL_client_version(const SSL *s)
5205 {
5206 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5207
5208 #ifndef OPENSSL_NO_QUIC
5209 /* We only support QUICv1 - so if its QUIC its QUICv1 */
5210 if (s->type == SSL_TYPE_QUIC_CONNECTION || s->type == SSL_TYPE_QUIC_XSO)
5211 return OSSL_QUIC1_VERSION;
5212 #endif
5213 if (sc == NULL)
5214 return 0;
5215
5216 return sc->client_version;
5217 }
5218
5219 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5220 {
5221 return ssl->ctx;
5222 }
5223
5224 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5225 {
5226 CERT *new_cert;
5227 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5228
5229 /* TODO(QUIC FUTURE): Add support for QUIC */
5230 if (sc == NULL)
5231 return NULL;
5232
5233 if (ssl->ctx == ctx)
5234 return ssl->ctx;
5235 if (ctx == NULL)
5236 ctx = sc->session_ctx;
5237 new_cert = ssl_cert_dup(ctx->cert);
5238 if (new_cert == NULL) {
5239 return NULL;
5240 }
5241
5242 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5243 ssl_cert_free(new_cert);
5244 return NULL;
5245 }
5246
5247 ssl_cert_free(sc->cert);
5248 sc->cert = new_cert;
5249
5250 /*
5251 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5252 * so setter APIs must prevent invalid lengths from entering the system.
5253 */
5254 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5255 return NULL;
5256
5257 /*
5258 * If the session ID context matches that of the parent SSL_CTX,
5259 * inherit it from the new SSL_CTX as well. If however the context does
5260 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5261 * leave it unchanged.
5262 */
5263 if ((ssl->ctx != NULL) &&
5264 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5265 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5266 sc->sid_ctx_length = ctx->sid_ctx_length;
5267 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5268 }
5269
5270 SSL_CTX_up_ref(ctx);
5271 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5272 ssl->ctx = ctx;
5273
5274 return ssl->ctx;
5275 }
5276
5277 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5278 {
5279 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5280 ctx->propq);
5281 }
5282
5283 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5284 {
5285 X509_LOOKUP *lookup;
5286
5287 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5288 if (lookup == NULL)
5289 return 0;
5290
5291 /* We ignore errors, in case the directory doesn't exist */
5292 ERR_set_mark();
5293
5294 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5295
5296 ERR_pop_to_mark();
5297
5298 return 1;
5299 }
5300
5301 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5302 {
5303 X509_LOOKUP *lookup;
5304
5305 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5306 if (lookup == NULL)
5307 return 0;
5308
5309 /* We ignore errors, in case the file doesn't exist */
5310 ERR_set_mark();
5311
5312 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5313 ctx->propq);
5314
5315 ERR_pop_to_mark();
5316
5317 return 1;
5318 }
5319
5320 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5321 {
5322 X509_LOOKUP *lookup;
5323
5324 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5325 if (lookup == NULL)
5326 return 0;
5327
5328 /* We ignore errors, in case the directory doesn't exist */
5329 ERR_set_mark();
5330
5331 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5332
5333 ERR_pop_to_mark();
5334
5335 return 1;
5336 }
5337
5338 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5339 {
5340 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5341 ctx->propq);
5342 }
5343
5344 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5345 {
5346 return X509_STORE_load_path(ctx->cert_store, CApath);
5347 }
5348
5349 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5350 {
5351 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5352 ctx->propq);
5353 }
5354
5355 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5356 const char *CApath)
5357 {
5358 if (CAfile == NULL && CApath == NULL)
5359 return 0;
5360 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5361 return 0;
5362 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5363 return 0;
5364 return 1;
5365 }
5366
5367 void SSL_set_info_callback(SSL *ssl,
5368 void (*cb) (const SSL *ssl, int type, int val))
5369 {
5370 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5371
5372 if (sc == NULL)
5373 return;
5374
5375 sc->info_callback = cb;
5376 }
5377
5378 /*
5379 * One compiler (Diab DCC) doesn't like argument names in returned function
5380 * pointer.
5381 */
5382 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5383 int /* type */ ,
5384 int /* val */ ) {
5385 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5386
5387 if (sc == NULL)
5388 return NULL;
5389
5390 return sc->info_callback;
5391 }
5392
5393 void SSL_set_verify_result(SSL *ssl, long arg)
5394 {
5395 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5396
5397 if (sc == NULL)
5398 return;
5399
5400 sc->verify_result = arg;
5401 }
5402
5403 long SSL_get_verify_result(const SSL *ssl)
5404 {
5405 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5406
5407 if (sc == NULL)
5408 return 0;
5409
5410 return sc->verify_result;
5411 }
5412
5413 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5414 {
5415 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5416
5417 if (sc == NULL)
5418 return 0;
5419
5420 if (outlen == 0)
5421 return sizeof(sc->s3.client_random);
5422 if (outlen > sizeof(sc->s3.client_random))
5423 outlen = sizeof(sc->s3.client_random);
5424 memcpy(out, sc->s3.client_random, outlen);
5425 return outlen;
5426 }
5427
5428 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5429 {
5430 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5431
5432 if (sc == NULL)
5433 return 0;
5434
5435 if (outlen == 0)
5436 return sizeof(sc->s3.server_random);
5437 if (outlen > sizeof(sc->s3.server_random))
5438 outlen = sizeof(sc->s3.server_random);
5439 memcpy(out, sc->s3.server_random, outlen);
5440 return outlen;
5441 }
5442
5443 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5444 unsigned char *out, size_t outlen)
5445 {
5446 if (outlen == 0)
5447 return session->master_key_length;
5448 if (outlen > session->master_key_length)
5449 outlen = session->master_key_length;
5450 memcpy(out, session->master_key, outlen);
5451 return outlen;
5452 }
5453
5454 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5455 size_t len)
5456 {
5457 if (len > sizeof(sess->master_key))
5458 return 0;
5459
5460 memcpy(sess->master_key, in, len);
5461 sess->master_key_length = len;
5462 return 1;
5463 }
5464
5465
5466 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5467 {
5468 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5469 }
5470
5471 void *SSL_get_ex_data(const SSL *s, int idx)
5472 {
5473 return CRYPTO_get_ex_data(&s->ex_data, idx);
5474 }
5475
5476 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5477 {
5478 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5479 }
5480
5481 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5482 {
5483 return CRYPTO_get_ex_data(&s->ex_data, idx);
5484 }
5485
5486 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5487 {
5488 return ctx->cert_store;
5489 }
5490
5491 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5492 {
5493 X509_STORE_free(ctx->cert_store);
5494 ctx->cert_store = store;
5495 }
5496
5497 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5498 {
5499 if (store != NULL)
5500 X509_STORE_up_ref(store);
5501 SSL_CTX_set_cert_store(ctx, store);
5502 }
5503
5504 int SSL_want(const SSL *s)
5505 {
5506 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5507
5508 #ifndef OPENSSL_NO_QUIC
5509 if (IS_QUIC(s))
5510 return ossl_quic_want(s);
5511 #endif
5512
5513 if (sc == NULL)
5514 return SSL_NOTHING;
5515
5516 return sc->rwstate;
5517 }
5518
5519 #ifndef OPENSSL_NO_PSK
5520 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5521 {
5522 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5523 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5524 return 0;
5525 }
5526 OPENSSL_free(ctx->cert->psk_identity_hint);
5527 if (identity_hint != NULL) {
5528 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5529 if (ctx->cert->psk_identity_hint == NULL)
5530 return 0;
5531 } else
5532 ctx->cert->psk_identity_hint = NULL;
5533 return 1;
5534 }
5535
5536 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5537 {
5538 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5539
5540 if (sc == NULL)
5541 return 0;
5542
5543 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5544 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5545 return 0;
5546 }
5547 OPENSSL_free(sc->cert->psk_identity_hint);
5548 if (identity_hint != NULL) {
5549 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5550 if (sc->cert->psk_identity_hint == NULL)
5551 return 0;
5552 } else
5553 sc->cert->psk_identity_hint = NULL;
5554 return 1;
5555 }
5556
5557 const char *SSL_get_psk_identity_hint(const SSL *s)
5558 {
5559 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5560
5561 if (sc == NULL || sc->session == NULL)
5562 return NULL;
5563
5564 return sc->session->psk_identity_hint;
5565 }
5566
5567 const char *SSL_get_psk_identity(const SSL *s)
5568 {
5569 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5570
5571 if (sc == NULL || sc->session == NULL)
5572 return NULL;
5573
5574 return sc->session->psk_identity;
5575 }
5576
5577 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5578 {
5579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5580
5581 if (sc == NULL)
5582 return;
5583
5584 sc->psk_client_callback = cb;
5585 }
5586
5587 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5588 {
5589 ctx->psk_client_callback = cb;
5590 }
5591
5592 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5593 {
5594 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5595
5596 if (sc == NULL)
5597 return;
5598
5599 sc->psk_server_callback = cb;
5600 }
5601
5602 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5603 {
5604 ctx->psk_server_callback = cb;
5605 }
5606 #endif
5607
5608 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5609 {
5610 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5611
5612 if (sc == NULL)
5613 return;
5614
5615 sc->psk_find_session_cb = cb;
5616 }
5617
5618 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5619 SSL_psk_find_session_cb_func cb)
5620 {
5621 ctx->psk_find_session_cb = cb;
5622 }
5623
5624 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5625 {
5626 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5627
5628 if (sc == NULL)
5629 return;
5630
5631 sc->psk_use_session_cb = cb;
5632 }
5633
5634 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5635 SSL_psk_use_session_cb_func cb)
5636 {
5637 ctx->psk_use_session_cb = cb;
5638 }
5639
5640 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5641 void (*cb) (int write_p, int version,
5642 int content_type, const void *buf,
5643 size_t len, SSL *ssl, void *arg))
5644 {
5645 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5646 }
5647
5648 void SSL_set_msg_callback(SSL *ssl,
5649 void (*cb) (int write_p, int version,
5650 int content_type, const void *buf,
5651 size_t len, SSL *ssl, void *arg))
5652 {
5653 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5654 }
5655
5656 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5657 int (*cb) (SSL *ssl,
5658 int
5659 is_forward_secure))
5660 {
5661 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5662 (void (*)(void))cb);
5663 }
5664
5665 void SSL_set_not_resumable_session_callback(SSL *ssl,
5666 int (*cb) (SSL *ssl,
5667 int is_forward_secure))
5668 {
5669 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5670 (void (*)(void))cb);
5671 }
5672
5673 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5674 size_t (*cb) (SSL *ssl, int type,
5675 size_t len, void *arg))
5676 {
5677 ctx->record_padding_cb = cb;
5678 }
5679
5680 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5681 {
5682 ctx->record_padding_arg = arg;
5683 }
5684
5685 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5686 {
5687 return ctx->record_padding_arg;
5688 }
5689
5690 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5691 {
5692 if (IS_QUIC_CTX(ctx) && block_size > 1)
5693 return 0;
5694
5695 /* block size of 0 or 1 is basically no padding */
5696 if (block_size == 1)
5697 ctx->block_padding = 0;
5698 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5699 ctx->block_padding = block_size;
5700 else
5701 return 0;
5702 return 1;
5703 }
5704
5705 int SSL_set_record_padding_callback(SSL *ssl,
5706 size_t (*cb) (SSL *ssl, int type,
5707 size_t len, void *arg))
5708 {
5709 BIO *b;
5710 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5711
5712 if (sc == NULL)
5713 return 0;
5714
5715 b = SSL_get_wbio(ssl);
5716 if (b == NULL || !BIO_get_ktls_send(b)) {
5717 sc->rlayer.record_padding_cb = cb;
5718 return 1;
5719 }
5720 return 0;
5721 }
5722
5723 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5724 {
5725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5726
5727 if (sc == NULL)
5728 return;
5729
5730 sc->rlayer.record_padding_arg = arg;
5731 }
5732
5733 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5734 {
5735 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5736
5737 if (sc == NULL)
5738 return NULL;
5739
5740 return sc->rlayer.record_padding_arg;
5741 }
5742
5743 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5744 {
5745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5746
5747 if (sc == NULL || (IS_QUIC(ssl) && block_size > 1))
5748 return 0;
5749
5750 /* block size of 0 or 1 is basically no padding */
5751 if (block_size == 1)
5752 sc->rlayer.block_padding = 0;
5753 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5754 sc->rlayer.block_padding = block_size;
5755 else
5756 return 0;
5757 return 1;
5758 }
5759
5760 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5761 {
5762 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5763
5764 if (sc == NULL)
5765 return 0;
5766
5767 sc->num_tickets = num_tickets;
5768
5769 return 1;
5770 }
5771
5772 size_t SSL_get_num_tickets(const SSL *s)
5773 {
5774 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5775
5776 if (sc == NULL)
5777 return 0;
5778
5779 return sc->num_tickets;
5780 }
5781
5782 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5783 {
5784 ctx->num_tickets = num_tickets;
5785
5786 return 1;
5787 }
5788
5789 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5790 {
5791 return ctx->num_tickets;
5792 }
5793
5794 /* Retrieve handshake hashes */
5795 int ssl_handshake_hash(SSL_CONNECTION *s,
5796 unsigned char *out, size_t outlen,
5797 size_t *hashlen)
5798 {
5799 EVP_MD_CTX *ctx = NULL;
5800 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5801 int hashleni = EVP_MD_CTX_get_size(hdgst);
5802 int ret = 0;
5803
5804 if (hashleni < 0 || (size_t)hashleni > outlen) {
5805 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5806 goto err;
5807 }
5808
5809 ctx = EVP_MD_CTX_new();
5810 if (ctx == NULL) {
5811 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5812 goto err;
5813 }
5814
5815 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5816 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5817 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5818 goto err;
5819 }
5820
5821 *hashlen = hashleni;
5822
5823 ret = 1;
5824 err:
5825 EVP_MD_CTX_free(ctx);
5826 return ret;
5827 }
5828
5829 int SSL_session_reused(const SSL *s)
5830 {
5831 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5832
5833 if (sc == NULL)
5834 return 0;
5835
5836 return sc->hit;
5837 }
5838
5839 int SSL_is_server(const SSL *s)
5840 {
5841 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5842
5843 if (sc == NULL)
5844 return 0;
5845
5846 return sc->server;
5847 }
5848
5849 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5850 void SSL_set_debug(SSL *s, int debug)
5851 {
5852 /* Old function was do-nothing anyway... */
5853 (void)s;
5854 (void)debug;
5855 }
5856 #endif
5857
5858 void SSL_set_security_level(SSL *s, int level)
5859 {
5860 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5861
5862 if (sc == NULL)
5863 return;
5864
5865 sc->cert->sec_level = level;
5866 }
5867
5868 int SSL_get_security_level(const SSL *s)
5869 {
5870 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5871
5872 if (sc == NULL)
5873 return 0;
5874
5875 return sc->cert->sec_level;
5876 }
5877
5878 void SSL_set_security_callback(SSL *s,
5879 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5880 int op, int bits, int nid,
5881 void *other, void *ex))
5882 {
5883 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5884
5885 if (sc == NULL)
5886 return;
5887
5888 sc->cert->sec_cb = cb;
5889 }
5890
5891 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5892 const SSL_CTX *ctx, int op,
5893 int bits, int nid, void *other,
5894 void *ex) {
5895 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5896
5897 if (sc == NULL)
5898 return NULL;
5899
5900 return sc->cert->sec_cb;
5901 }
5902
5903 void SSL_set0_security_ex_data(SSL *s, void *ex)
5904 {
5905 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5906
5907 if (sc == NULL)
5908 return;
5909
5910 sc->cert->sec_ex = ex;
5911 }
5912
5913 void *SSL_get0_security_ex_data(const SSL *s)
5914 {
5915 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5916
5917 if (sc == NULL)
5918 return NULL;
5919
5920 return sc->cert->sec_ex;
5921 }
5922
5923 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5924 {
5925 ctx->cert->sec_level = level;
5926 }
5927
5928 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5929 {
5930 return ctx->cert->sec_level;
5931 }
5932
5933 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5934 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5935 int op, int bits, int nid,
5936 void *other, void *ex))
5937 {
5938 ctx->cert->sec_cb = cb;
5939 }
5940
5941 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5942 const SSL_CTX *ctx,
5943 int op, int bits,
5944 int nid,
5945 void *other,
5946 void *ex) {
5947 return ctx->cert->sec_cb;
5948 }
5949
5950 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5951 {
5952 ctx->cert->sec_ex = ex;
5953 }
5954
5955 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5956 {
5957 return ctx->cert->sec_ex;
5958 }
5959
5960 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5961 {
5962 return ctx->options;
5963 }
5964
5965 uint64_t SSL_get_options(const SSL *s)
5966 {
5967 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5968
5969 #ifndef OPENSSL_NO_QUIC
5970 if (IS_QUIC(s))
5971 return ossl_quic_get_options(s);
5972 #endif
5973
5974 if (sc == NULL)
5975 return 0;
5976
5977 return sc->options;
5978 }
5979
5980 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5981 {
5982 return ctx->options |= op;
5983 }
5984
5985 uint64_t SSL_set_options(SSL *s, uint64_t op)
5986 {
5987 SSL_CONNECTION *sc;
5988 OSSL_PARAM options[2], *opts = options;
5989
5990 #ifndef OPENSSL_NO_QUIC
5991 if (IS_QUIC(s))
5992 return ossl_quic_set_options(s, op);
5993 #endif
5994
5995 sc = SSL_CONNECTION_FROM_SSL(s);
5996 if (sc == NULL)
5997 return 0;
5998
5999 sc->options |= op;
6000
6001 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
6002 &sc->options);
6003 *opts = OSSL_PARAM_construct_end();
6004
6005 /* Ignore return value */
6006 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
6007 sc->rlayer.wrlmethod->set_options(sc->rlayer.wrl, options);
6008
6009 return sc->options;
6010 }
6011
6012 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
6013 {
6014 return ctx->options &= ~op;
6015 }
6016
6017 uint64_t SSL_clear_options(SSL *s, uint64_t op)
6018 {
6019 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6020 OSSL_PARAM options[2], *opts = options;
6021
6022 #ifndef OPENSSL_NO_QUIC
6023 if (IS_QUIC(s))
6024 return ossl_quic_clear_options(s, op);
6025 #endif
6026
6027 if (sc == NULL)
6028 return 0;
6029
6030 sc->options &= ~op;
6031
6032 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
6033 &sc->options);
6034 *opts = OSSL_PARAM_construct_end();
6035
6036 /* Ignore return value */
6037 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
6038 sc->rlayer.wrlmethod->set_options(sc->rlayer.wrl, options);
6039
6040 return sc->options;
6041 }
6042
6043 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
6044 {
6045 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6046
6047 if (sc == NULL)
6048 return NULL;
6049
6050 return sc->verified_chain;
6051 }
6052
6053 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
6054
6055 #ifndef OPENSSL_NO_CT
6056
6057 /*
6058 * Moves SCTs from the |src| stack to the |dst| stack.
6059 * The source of each SCT will be set to |origin|.
6060 * If |dst| points to a NULL pointer, a new stack will be created and owned by
6061 * the caller.
6062 * Returns the number of SCTs moved, or a negative integer if an error occurs.
6063 * The |dst| stack is created and possibly partially populated even in case
6064 * of error, likewise the |src| stack may be left in an intermediate state.
6065 */
6066 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
6067 sct_source_t origin)
6068 {
6069 int scts_moved = 0;
6070 SCT *sct = NULL;
6071
6072 if (*dst == NULL) {
6073 *dst = sk_SCT_new_null();
6074 if (*dst == NULL) {
6075 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6076 goto err;
6077 }
6078 }
6079
6080 while ((sct = sk_SCT_pop(src)) != NULL) {
6081 if (SCT_set_source(sct, origin) != 1)
6082 goto err;
6083
6084 if (!sk_SCT_push(*dst, sct))
6085 goto err;
6086 scts_moved += 1;
6087 }
6088
6089 return scts_moved;
6090 err:
6091 SCT_free(sct);
6092 return -1;
6093 }
6094
6095 /*
6096 * Look for data collected during ServerHello and parse if found.
6097 * Returns the number of SCTs extracted.
6098 */
6099 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
6100 {
6101 int scts_extracted = 0;
6102
6103 if (s->ext.scts != NULL) {
6104 const unsigned char *p = s->ext.scts;
6105 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
6106
6107 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
6108
6109 SCT_LIST_free(scts);
6110 }
6111
6112 return scts_extracted;
6113 }
6114
6115 /*
6116 * Checks for an OCSP response and then attempts to extract any SCTs found if it
6117 * contains an SCT X509 extension. They will be stored in |s->scts|.
6118 * Returns:
6119 * - The number of SCTs extracted, assuming an OCSP response exists.
6120 * - 0 if no OCSP response exists or it contains no SCTs.
6121 * - A negative integer if an error occurs.
6122 */
6123 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
6124 {
6125 # ifndef OPENSSL_NO_OCSP
6126 int scts_extracted = 0;
6127 const unsigned char *p;
6128 OCSP_BASICRESP *br = NULL;
6129 OCSP_RESPONSE *rsp = NULL;
6130 STACK_OF(SCT) *scts = NULL;
6131 int i;
6132
6133 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
6134 goto err;
6135
6136 p = s->ext.ocsp.resp;
6137 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
6138 if (rsp == NULL)
6139 goto err;
6140
6141 br = OCSP_response_get1_basic(rsp);
6142 if (br == NULL)
6143 goto err;
6144
6145 for (i = 0; i < OCSP_resp_count(br); ++i) {
6146 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
6147
6148 if (single == NULL)
6149 continue;
6150
6151 scts =
6152 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
6153 scts_extracted =
6154 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
6155 if (scts_extracted < 0)
6156 goto err;
6157 }
6158 err:
6159 SCT_LIST_free(scts);
6160 OCSP_BASICRESP_free(br);
6161 OCSP_RESPONSE_free(rsp);
6162 return scts_extracted;
6163 # else
6164 /* Behave as if no OCSP response exists */
6165 return 0;
6166 # endif
6167 }
6168
6169 /*
6170 * Attempts to extract SCTs from the peer certificate.
6171 * Return the number of SCTs extracted, or a negative integer if an error
6172 * occurs.
6173 */
6174 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
6175 {
6176 int scts_extracted = 0;
6177 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6178
6179 if (cert != NULL) {
6180 STACK_OF(SCT) *scts =
6181 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
6182
6183 scts_extracted =
6184 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
6185
6186 SCT_LIST_free(scts);
6187 }
6188
6189 return scts_extracted;
6190 }
6191
6192 /*
6193 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
6194 * response (if it exists) and X509v3 extensions in the certificate.
6195 * Returns NULL if an error occurs.
6196 */
6197 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
6198 {
6199 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6200
6201 if (sc == NULL)
6202 return NULL;
6203
6204 if (!sc->scts_parsed) {
6205 if (ct_extract_tls_extension_scts(sc) < 0 ||
6206 ct_extract_ocsp_response_scts(sc) < 0 ||
6207 ct_extract_x509v3_extension_scts(sc) < 0)
6208 goto err;
6209
6210 sc->scts_parsed = 1;
6211 }
6212 return sc->scts;
6213 err:
6214 return NULL;
6215 }
6216
6217 static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
6218 const STACK_OF(SCT) *scts, void *unused_arg)
6219 {
6220 return 1;
6221 }
6222
6223 static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
6224 const STACK_OF(SCT) *scts, void *unused_arg)
6225 {
6226 int count = scts != NULL ? sk_SCT_num(scts) : 0;
6227 int i;
6228
6229 for (i = 0; i < count; ++i) {
6230 SCT *sct = sk_SCT_value(scts, i);
6231 int status = SCT_get_validation_status(sct);
6232
6233 if (status == SCT_VALIDATION_STATUS_VALID)
6234 return 1;
6235 }
6236 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
6237 return 0;
6238 }
6239
6240 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6241 void *arg)
6242 {
6243 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6244
6245 if (sc == NULL)
6246 return 0;
6247
6248 /*
6249 * Since code exists that uses the custom extension handler for CT, look
6250 * for this and throw an error if they have already registered to use CT.
6251 */
6252 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6253 TLSEXT_TYPE_signed_certificate_timestamp))
6254 {
6255 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6256 return 0;
6257 }
6258
6259 if (callback != NULL) {
6260 /*
6261 * If we are validating CT, then we MUST accept SCTs served via OCSP
6262 */
6263 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6264 return 0;
6265 }
6266
6267 sc->ct_validation_callback = callback;
6268 sc->ct_validation_callback_arg = arg;
6269
6270 return 1;
6271 }
6272
6273 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6274 ssl_ct_validation_cb callback, void *arg)
6275 {
6276 /*
6277 * Since code exists that uses the custom extension handler for CT, look for
6278 * this and throw an error if they have already registered to use CT.
6279 */
6280 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6281 TLSEXT_TYPE_signed_certificate_timestamp))
6282 {
6283 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6284 return 0;
6285 }
6286
6287 ctx->ct_validation_callback = callback;
6288 ctx->ct_validation_callback_arg = arg;
6289 return 1;
6290 }
6291
6292 int SSL_ct_is_enabled(const SSL *s)
6293 {
6294 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6295
6296 if (sc == NULL)
6297 return 0;
6298
6299 return sc->ct_validation_callback != NULL;
6300 }
6301
6302 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6303 {
6304 return ctx->ct_validation_callback != NULL;
6305 }
6306
6307 int ssl_validate_ct(SSL_CONNECTION *s)
6308 {
6309 int ret = 0;
6310 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6311 X509 *issuer;
6312 SSL_DANE *dane = &s->dane;
6313 CT_POLICY_EVAL_CTX *ctx = NULL;
6314 const STACK_OF(SCT) *scts;
6315
6316 /*
6317 * If no callback is set, the peer is anonymous, or its chain is invalid,
6318 * skip SCT validation - just return success. Applications that continue
6319 * handshakes without certificates, with unverified chains, or pinned leaf
6320 * certificates are outside the scope of the WebPKI and CT.
6321 *
6322 * The above exclusions notwithstanding the vast majority of peers will
6323 * have rather ordinary certificate chains validated by typical
6324 * applications that perform certificate verification and therefore will
6325 * process SCTs when enabled.
6326 */
6327 if (s->ct_validation_callback == NULL || cert == NULL ||
6328 s->verify_result != X509_V_OK ||
6329 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6330 return 1;
6331
6332 /*
6333 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6334 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6335 */
6336 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6337 switch (dane->mtlsa->usage) {
6338 case DANETLS_USAGE_DANE_TA:
6339 case DANETLS_USAGE_DANE_EE:
6340 return 1;
6341 }
6342 }
6343
6344 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6345 SSL_CONNECTION_GET_CTX(s)->propq);
6346 if (ctx == NULL) {
6347 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6348 goto end;
6349 }
6350
6351 issuer = sk_X509_value(s->verified_chain, 1);
6352 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6353 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6354 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6355 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6356 CT_POLICY_EVAL_CTX_set_time(
6357 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6358
6359 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6360
6361 /*
6362 * This function returns success (> 0) only when all the SCTs are valid, 0
6363 * when some are invalid, and < 0 on various internal errors (out of
6364 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6365 * reason to abort the handshake, that decision is up to the callback.
6366 * Therefore, we error out only in the unexpected case that the return
6367 * value is negative.
6368 *
6369 * XXX: One might well argue that the return value of this function is an
6370 * unfortunate design choice. Its job is only to determine the validation
6371 * status of each of the provided SCTs. So long as it correctly separates
6372 * the wheat from the chaff it should return success. Failure in this case
6373 * ought to correspond to an inability to carry out its duties.
6374 */
6375 if (SCT_LIST_validate(scts, ctx) < 0) {
6376 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6377 goto end;
6378 }
6379
6380 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6381 if (ret < 0)
6382 ret = 0; /* This function returns 0 on failure */
6383 if (!ret)
6384 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6385
6386 end:
6387 CT_POLICY_EVAL_CTX_free(ctx);
6388 /*
6389 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6390 * failure return code here. Also the application may wish the complete
6391 * the handshake, and then disconnect cleanly at a higher layer, after
6392 * checking the verification status of the completed connection.
6393 *
6394 * We therefore force a certificate verification failure which will be
6395 * visible via SSL_get_verify_result() and cached as part of any resumed
6396 * session.
6397 *
6398 * Note: the permissive callback is for information gathering only, always
6399 * returns success, and does not affect verification status. Only the
6400 * strict callback or a custom application-specified callback can trigger
6401 * connection failure or record a verification error.
6402 */
6403 if (ret <= 0)
6404 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6405 return ret;
6406 }
6407
6408 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6409 {
6410 switch (validation_mode) {
6411 default:
6412 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6413 return 0;
6414 case SSL_CT_VALIDATION_PERMISSIVE:
6415 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6416 case SSL_CT_VALIDATION_STRICT:
6417 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6418 }
6419 }
6420
6421 int SSL_enable_ct(SSL *s, int validation_mode)
6422 {
6423 switch (validation_mode) {
6424 default:
6425 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6426 return 0;
6427 case SSL_CT_VALIDATION_PERMISSIVE:
6428 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6429 case SSL_CT_VALIDATION_STRICT:
6430 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6431 }
6432 }
6433
6434 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6435 {
6436 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6437 }
6438
6439 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6440 {
6441 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6442 }
6443
6444 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
6445 {
6446 CTLOG_STORE_free(ctx->ctlog_store);
6447 ctx->ctlog_store = logs;
6448 }
6449
6450 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6451 {
6452 return ctx->ctlog_store;
6453 }
6454
6455 #endif /* OPENSSL_NO_CT */
6456
6457 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6458 void *arg)
6459 {
6460 c->client_hello_cb = cb;
6461 c->client_hello_cb_arg = arg;
6462 }
6463
6464 int SSL_client_hello_isv2(SSL *s)
6465 {
6466 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6467
6468 if (sc == NULL)
6469 return 0;
6470
6471 if (sc->clienthello == NULL)
6472 return 0;
6473 return sc->clienthello->isv2;
6474 }
6475
6476 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6477 {
6478 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6479
6480 if (sc == NULL)
6481 return 0;
6482
6483 if (sc->clienthello == NULL)
6484 return 0;
6485 return sc->clienthello->legacy_version;
6486 }
6487
6488 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6489 {
6490 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6491
6492 if (sc == NULL)
6493 return 0;
6494
6495 if (sc->clienthello == NULL)
6496 return 0;
6497 if (out != NULL)
6498 *out = sc->clienthello->random;
6499 return SSL3_RANDOM_SIZE;
6500 }
6501
6502 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6503 {
6504 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6505
6506 if (sc == NULL)
6507 return 0;
6508
6509 if (sc->clienthello == NULL)
6510 return 0;
6511 if (out != NULL)
6512 *out = sc->clienthello->session_id;
6513 return sc->clienthello->session_id_len;
6514 }
6515
6516 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6517 {
6518 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6519
6520 if (sc == NULL)
6521 return 0;
6522
6523 if (sc->clienthello == NULL)
6524 return 0;
6525 if (out != NULL)
6526 *out = PACKET_data(&sc->clienthello->ciphersuites);
6527 return PACKET_remaining(&sc->clienthello->ciphersuites);
6528 }
6529
6530 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6531 {
6532 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6533
6534 if (sc == NULL)
6535 return 0;
6536
6537 if (sc->clienthello == NULL)
6538 return 0;
6539 if (out != NULL)
6540 *out = sc->clienthello->compressions;
6541 return sc->clienthello->compressions_len;
6542 }
6543
6544 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6545 {
6546 RAW_EXTENSION *ext;
6547 int *present;
6548 size_t num = 0, i;
6549 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6550
6551 if (sc == NULL)
6552 return 0;
6553
6554 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6555 return 0;
6556 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6557 ext = sc->clienthello->pre_proc_exts + i;
6558 if (ext->present)
6559 num++;
6560 }
6561 if (num == 0) {
6562 *out = NULL;
6563 *outlen = 0;
6564 return 1;
6565 }
6566 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6567 return 0;
6568 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6569 ext = sc->clienthello->pre_proc_exts + i;
6570 if (ext->present) {
6571 if (ext->received_order >= num)
6572 goto err;
6573 present[ext->received_order] = ext->type;
6574 }
6575 }
6576 *out = present;
6577 *outlen = num;
6578 return 1;
6579 err:
6580 OPENSSL_free(present);
6581 return 0;
6582 }
6583
6584 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6585 {
6586 RAW_EXTENSION *ext;
6587 size_t num = 0, i;
6588 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6589
6590 if (sc == NULL)
6591 return 0;
6592
6593 if (sc->clienthello == NULL || num_exts == NULL)
6594 return 0;
6595 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6596 ext = sc->clienthello->pre_proc_exts + i;
6597 if (ext->present)
6598 num++;
6599 }
6600 if (num == 0) {
6601 *num_exts = 0;
6602 return 1;
6603 }
6604 if (exts == NULL) {
6605 *num_exts = num;
6606 return 1;
6607 }
6608 if (*num_exts < num)
6609 return 0;
6610 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6611 ext = sc->clienthello->pre_proc_exts + i;
6612 if (ext->present) {
6613 if (ext->received_order >= num)
6614 return 0;
6615 exts[ext->received_order] = ext->type;
6616 }
6617 }
6618 *num_exts = num;
6619 return 1;
6620 }
6621
6622 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6623 size_t *outlen)
6624 {
6625 size_t i;
6626 RAW_EXTENSION *r;
6627 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6628
6629 if (sc == NULL)
6630 return 0;
6631
6632 if (sc->clienthello == NULL)
6633 return 0;
6634 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6635 r = sc->clienthello->pre_proc_exts + i;
6636 if (r->present && r->type == type) {
6637 if (out != NULL)
6638 *out = PACKET_data(&r->data);
6639 if (outlen != NULL)
6640 *outlen = PACKET_remaining(&r->data);
6641 return 1;
6642 }
6643 }
6644 return 0;
6645 }
6646
6647 int SSL_free_buffers(SSL *ssl)
6648 {
6649 RECORD_LAYER *rl;
6650 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
6651
6652 if (sc == NULL)
6653 return 0;
6654
6655 rl = &sc->rlayer;
6656
6657 return rl->rrlmethod->free_buffers(rl->rrl)
6658 && rl->wrlmethod->free_buffers(rl->wrl);
6659 }
6660
6661 int SSL_alloc_buffers(SSL *ssl)
6662 {
6663 RECORD_LAYER *rl;
6664 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6665
6666 if (sc == NULL)
6667 return 0;
6668
6669 /* QUIC always has buffers allocated. */
6670 if (IS_QUIC(ssl))
6671 return 1;
6672
6673 rl = &sc->rlayer;
6674
6675 return rl->rrlmethod->alloc_buffers(rl->rrl)
6676 && rl->wrlmethod->alloc_buffers(rl->wrl);
6677 }
6678
6679 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6680 {
6681 ctx->keylog_callback = cb;
6682 }
6683
6684 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6685 {
6686 return ctx->keylog_callback;
6687 }
6688
6689 static int nss_keylog_int(const char *prefix,
6690 SSL_CONNECTION *sc,
6691 const uint8_t *parameter_1,
6692 size_t parameter_1_len,
6693 const uint8_t *parameter_2,
6694 size_t parameter_2_len)
6695 {
6696 char *out = NULL;
6697 char *cursor = NULL;
6698 size_t out_len = 0;
6699 size_t i;
6700 size_t prefix_len;
6701 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6702
6703 if (sctx->keylog_callback == NULL)
6704 return 1;
6705
6706 /*
6707 * Our output buffer will contain the following strings, rendered with
6708 * space characters in between, terminated by a NULL character: first the
6709 * prefix, then the first parameter, then the second parameter. The
6710 * meaning of each parameter depends on the specific key material being
6711 * logged. Note that the first and second parameters are encoded in
6712 * hexadecimal, so we need a buffer that is twice their lengths.
6713 */
6714 prefix_len = strlen(prefix);
6715 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6716 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6717 return 0;
6718
6719 strcpy(cursor, prefix);
6720 cursor += prefix_len;
6721 *cursor++ = ' ';
6722
6723 for (i = 0; i < parameter_1_len; i++) {
6724 sprintf(cursor, "%02x", parameter_1[i]);
6725 cursor += 2;
6726 }
6727 *cursor++ = ' ';
6728
6729 for (i = 0; i < parameter_2_len; i++) {
6730 sprintf(cursor, "%02x", parameter_2[i]);
6731 cursor += 2;
6732 }
6733 *cursor = '\0';
6734
6735 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6736 OPENSSL_clear_free(out, out_len);
6737 return 1;
6738
6739 }
6740
6741 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6742 const uint8_t *encrypted_premaster,
6743 size_t encrypted_premaster_len,
6744 const uint8_t *premaster,
6745 size_t premaster_len)
6746 {
6747 if (encrypted_premaster_len < 8) {
6748 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6749 return 0;
6750 }
6751
6752 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6753 return nss_keylog_int("RSA",
6754 sc,
6755 encrypted_premaster,
6756 8,
6757 premaster,
6758 premaster_len);
6759 }
6760
6761 int ssl_log_secret(SSL_CONNECTION *sc,
6762 const char *label,
6763 const uint8_t *secret,
6764 size_t secret_len)
6765 {
6766 return nss_keylog_int(label,
6767 sc,
6768 sc->s3.client_random,
6769 SSL3_RANDOM_SIZE,
6770 secret,
6771 secret_len);
6772 }
6773
6774 #define SSLV2_CIPHER_LEN 3
6775
6776 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6777 {
6778 int n;
6779
6780 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6781
6782 if (PACKET_remaining(cipher_suites) == 0) {
6783 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6784 return 0;
6785 }
6786
6787 if (PACKET_remaining(cipher_suites) % n != 0) {
6788 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6789 return 0;
6790 }
6791
6792 OPENSSL_free(s->s3.tmp.ciphers_raw);
6793 s->s3.tmp.ciphers_raw = NULL;
6794 s->s3.tmp.ciphers_rawlen = 0;
6795
6796 if (sslv2format) {
6797 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6798 PACKET sslv2ciphers = *cipher_suites;
6799 unsigned int leadbyte;
6800 unsigned char *raw;
6801
6802 /*
6803 * We store the raw ciphers list in SSLv3+ format so we need to do some
6804 * preprocessing to convert the list first. If there are any SSLv2 only
6805 * ciphersuites with a non-zero leading byte then we are going to
6806 * slightly over allocate because we won't store those. But that isn't a
6807 * problem.
6808 */
6809 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6810 s->s3.tmp.ciphers_raw = raw;
6811 if (raw == NULL) {
6812 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6813 return 0;
6814 }
6815 for (s->s3.tmp.ciphers_rawlen = 0;
6816 PACKET_remaining(&sslv2ciphers) > 0;
6817 raw += TLS_CIPHER_LEN) {
6818 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6819 || (leadbyte == 0
6820 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6821 TLS_CIPHER_LEN))
6822 || (leadbyte != 0
6823 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6824 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6825 OPENSSL_free(s->s3.tmp.ciphers_raw);
6826 s->s3.tmp.ciphers_raw = NULL;
6827 s->s3.tmp.ciphers_rawlen = 0;
6828 return 0;
6829 }
6830 if (leadbyte == 0)
6831 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6832 }
6833 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6834 &s->s3.tmp.ciphers_rawlen)) {
6835 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6836 return 0;
6837 }
6838 return 1;
6839 }
6840
6841 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6842 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6843 STACK_OF(SSL_CIPHER) **scsvs)
6844 {
6845 PACKET pkt;
6846 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6847
6848 if (sc == NULL)
6849 return 0;
6850
6851 if (!PACKET_buf_init(&pkt, bytes, len))
6852 return 0;
6853 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6854 }
6855
6856 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6857 STACK_OF(SSL_CIPHER) **skp,
6858 STACK_OF(SSL_CIPHER) **scsvs_out,
6859 int sslv2format, int fatal)
6860 {
6861 const SSL_CIPHER *c;
6862 STACK_OF(SSL_CIPHER) *sk = NULL;
6863 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6864 int n;
6865 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6866 unsigned char cipher[SSLV2_CIPHER_LEN];
6867
6868 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6869
6870 if (PACKET_remaining(cipher_suites) == 0) {
6871 if (fatal)
6872 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6873 else
6874 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6875 return 0;
6876 }
6877
6878 if (PACKET_remaining(cipher_suites) % n != 0) {
6879 if (fatal)
6880 SSLfatal(s, SSL_AD_DECODE_ERROR,
6881 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6882 else
6883 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6884 return 0;
6885 }
6886
6887 sk = sk_SSL_CIPHER_new_null();
6888 scsvs = sk_SSL_CIPHER_new_null();
6889 if (sk == NULL || scsvs == NULL) {
6890 if (fatal)
6891 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6892 else
6893 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6894 goto err;
6895 }
6896
6897 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6898 /*
6899 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6900 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6901 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6902 */
6903 if (sslv2format && cipher[0] != '\0')
6904 continue;
6905
6906 /* For SSLv2-compat, ignore leading 0-byte. */
6907 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6908 if (c != NULL) {
6909 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6910 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6911 if (fatal)
6912 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6913 else
6914 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6915 goto err;
6916 }
6917 }
6918 }
6919 if (PACKET_remaining(cipher_suites) > 0) {
6920 if (fatal)
6921 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6922 else
6923 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6924 goto err;
6925 }
6926
6927 if (skp != NULL)
6928 *skp = sk;
6929 else
6930 sk_SSL_CIPHER_free(sk);
6931 if (scsvs_out != NULL)
6932 *scsvs_out = scsvs;
6933 else
6934 sk_SSL_CIPHER_free(scsvs);
6935 return 1;
6936 err:
6937 sk_SSL_CIPHER_free(sk);
6938 sk_SSL_CIPHER_free(scsvs);
6939 return 0;
6940 }
6941
6942 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6943 {
6944 ctx->max_early_data = max_early_data;
6945
6946 return 1;
6947 }
6948
6949 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6950 {
6951 return ctx->max_early_data;
6952 }
6953
6954 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6955 {
6956 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
6957
6958 if (sc == NULL)
6959 return 0;
6960
6961 sc->max_early_data = max_early_data;
6962
6963 return 1;
6964 }
6965
6966 uint32_t SSL_get_max_early_data(const SSL *s)
6967 {
6968 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6969
6970 if (sc == NULL)
6971 return 0;
6972
6973 return sc->max_early_data;
6974 }
6975
6976 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6977 {
6978 ctx->recv_max_early_data = recv_max_early_data;
6979
6980 return 1;
6981 }
6982
6983 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6984 {
6985 return ctx->recv_max_early_data;
6986 }
6987
6988 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6989 {
6990 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
6991
6992 if (sc == NULL)
6993 return 0;
6994
6995 sc->recv_max_early_data = recv_max_early_data;
6996
6997 return 1;
6998 }
6999
7000 uint32_t SSL_get_recv_max_early_data(const SSL *s)
7001 {
7002 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7003
7004 if (sc == NULL)
7005 return 0;
7006
7007 return sc->recv_max_early_data;
7008 }
7009
7010 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
7011 {
7012 /* Return any active Max Fragment Len extension */
7013 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
7014 return GET_MAX_FRAGMENT_LENGTH(sc->session);
7015
7016 /* return current SSL connection setting */
7017 return sc->max_send_fragment;
7018 }
7019
7020 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
7021 {
7022 /* Return a value regarding an active Max Fragment Len extension */
7023 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
7024 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
7025 return GET_MAX_FRAGMENT_LENGTH(sc->session);
7026
7027 /* else limit |split_send_fragment| to current |max_send_fragment| */
7028 if (sc->split_send_fragment > sc->max_send_fragment)
7029 return sc->max_send_fragment;
7030
7031 /* return current SSL connection setting */
7032 return sc->split_send_fragment;
7033 }
7034
7035 int SSL_stateless(SSL *s)
7036 {
7037 int ret;
7038 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7039
7040 if (sc == NULL)
7041 return 0;
7042
7043 /* Ensure there is no state left over from a previous invocation */
7044 if (!SSL_clear(s))
7045 return 0;
7046
7047 ERR_clear_error();
7048
7049 sc->s3.flags |= TLS1_FLAGS_STATELESS;
7050 ret = SSL_accept(s);
7051 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
7052
7053 if (ret > 0 && sc->ext.cookieok)
7054 return 1;
7055
7056 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
7057 return 0;
7058
7059 return -1;
7060 }
7061
7062 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
7063 {
7064 ctx->pha_enabled = val;
7065 }
7066
7067 void SSL_set_post_handshake_auth(SSL *ssl, int val)
7068 {
7069 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
7070
7071 if (sc == NULL)
7072 return;
7073
7074 sc->pha_enabled = val;
7075 }
7076
7077 int SSL_verify_client_post_handshake(SSL *ssl)
7078 {
7079 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
7080
7081 #ifndef OPENSSL_NO_QUIC
7082 if (IS_QUIC(ssl)) {
7083 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
7084 return 0;
7085 }
7086 #endif
7087
7088 if (sc == NULL)
7089 return 0;
7090
7091 if (!SSL_CONNECTION_IS_TLS13(sc)) {
7092 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
7093 return 0;
7094 }
7095 if (!sc->server) {
7096 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
7097 return 0;
7098 }
7099
7100 if (!SSL_is_init_finished(ssl)) {
7101 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
7102 return 0;
7103 }
7104
7105 switch (sc->post_handshake_auth) {
7106 case SSL_PHA_NONE:
7107 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
7108 return 0;
7109 default:
7110 case SSL_PHA_EXT_SENT:
7111 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
7112 return 0;
7113 case SSL_PHA_EXT_RECEIVED:
7114 break;
7115 case SSL_PHA_REQUEST_PENDING:
7116 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
7117 return 0;
7118 case SSL_PHA_REQUESTED:
7119 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
7120 return 0;
7121 }
7122
7123 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
7124
7125 /* checks verify_mode and algorithm_auth */
7126 if (!send_certificate_request(sc)) {
7127 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
7128 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
7129 return 0;
7130 }
7131
7132 ossl_statem_set_in_init(sc, 1);
7133 return 1;
7134 }
7135
7136 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
7137 SSL_CTX_generate_session_ticket_fn gen_cb,
7138 SSL_CTX_decrypt_session_ticket_fn dec_cb,
7139 void *arg)
7140 {
7141 ctx->generate_ticket_cb = gen_cb;
7142 ctx->decrypt_ticket_cb = dec_cb;
7143 ctx->ticket_cb_data = arg;
7144 return 1;
7145 }
7146
7147 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
7148 SSL_allow_early_data_cb_fn cb,
7149 void *arg)
7150 {
7151 ctx->allow_early_data_cb = cb;
7152 ctx->allow_early_data_cb_data = arg;
7153 }
7154
7155 void SSL_set_allow_early_data_cb(SSL *s,
7156 SSL_allow_early_data_cb_fn cb,
7157 void *arg)
7158 {
7159 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7160
7161 if (sc == NULL)
7162 return;
7163
7164 sc->allow_early_data_cb = cb;
7165 sc->allow_early_data_cb_data = arg;
7166 }
7167
7168 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
7169 int nid,
7170 const char *properties)
7171 {
7172 const EVP_CIPHER *ciph;
7173
7174 ciph = tls_get_cipher_from_engine(nid);
7175 if (ciph != NULL)
7176 return ciph;
7177
7178 /*
7179 * If there is no engine cipher then we do an explicit fetch. This may fail
7180 * and that could be ok
7181 */
7182 ERR_set_mark();
7183 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
7184 ERR_pop_to_mark();
7185 return ciph;
7186 }
7187
7188
7189 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
7190 {
7191 /* Don't up-ref an implicit EVP_CIPHER */
7192 if (EVP_CIPHER_get0_provider(cipher) == NULL)
7193 return 1;
7194
7195 /*
7196 * The cipher was explicitly fetched and therefore it is safe to cast
7197 * away the const
7198 */
7199 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
7200 }
7201
7202 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
7203 {
7204 if (cipher == NULL)
7205 return;
7206
7207 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
7208 /*
7209 * The cipher was explicitly fetched and therefore it is safe to cast
7210 * away the const
7211 */
7212 EVP_CIPHER_free((EVP_CIPHER *)cipher);
7213 }
7214 }
7215
7216 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
7217 int nid,
7218 const char *properties)
7219 {
7220 const EVP_MD *md;
7221
7222 md = tls_get_digest_from_engine(nid);
7223 if (md != NULL)
7224 return md;
7225
7226 /* Otherwise we do an explicit fetch */
7227 ERR_set_mark();
7228 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
7229 ERR_pop_to_mark();
7230 return md;
7231 }
7232
7233 int ssl_evp_md_up_ref(const EVP_MD *md)
7234 {
7235 /* Don't up-ref an implicit EVP_MD */
7236 if (EVP_MD_get0_provider(md) == NULL)
7237 return 1;
7238
7239 /*
7240 * The digest was explicitly fetched and therefore it is safe to cast
7241 * away the const
7242 */
7243 return EVP_MD_up_ref((EVP_MD *)md);
7244 }
7245
7246 void ssl_evp_md_free(const EVP_MD *md)
7247 {
7248 if (md == NULL)
7249 return;
7250
7251 if (EVP_MD_get0_provider(md) != NULL) {
7252 /*
7253 * The digest was explicitly fetched and therefore it is safe to cast
7254 * away the const
7255 */
7256 EVP_MD_free((EVP_MD *)md);
7257 }
7258 }
7259
7260 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7261 {
7262 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7263
7264 if (sc == NULL)
7265 return 0;
7266
7267 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7268 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7269 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7270 return 0;
7271 }
7272 EVP_PKEY_free(sc->cert->dh_tmp);
7273 sc->cert->dh_tmp = dhpkey;
7274 return 1;
7275 }
7276
7277 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7278 {
7279 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7280 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7281 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7282 return 0;
7283 }
7284 EVP_PKEY_free(ctx->cert->dh_tmp);
7285 ctx->cert->dh_tmp = dhpkey;
7286 return 1;
7287 }
7288
7289 /* QUIC-specific methods which are supported on QUIC connections only. */
7290 int SSL_handle_events(SSL *s)
7291 {
7292 SSL_CONNECTION *sc;
7293
7294 #ifndef OPENSSL_NO_QUIC
7295 if (IS_QUIC(s))
7296 return ossl_quic_handle_events(s);
7297 #endif
7298
7299 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7300 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7301 /*
7302 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7303 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7304 * can also return 0 if s is NULL or not a DTLS object, but we've
7305 * already ruled out those possibilities above, so this is not possible
7306 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7307 * returns -1.
7308 */
7309 return DTLSv1_handle_timeout(s) >= 0;
7310
7311 return 1;
7312 }
7313
7314 int SSL_get_event_timeout(SSL *s, struct timeval *tv, int *is_infinite)
7315 {
7316 SSL_CONNECTION *sc;
7317
7318 #ifndef OPENSSL_NO_QUIC
7319 if (IS_QUIC(s))
7320 return ossl_quic_get_event_timeout(s, tv, is_infinite);
7321 #endif
7322
7323 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7324 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7325 && DTLSv1_get_timeout(s, tv)) {
7326 *is_infinite = 0;
7327 return 1;
7328 }
7329
7330 tv->tv_sec = 1000000;
7331 tv->tv_usec = 0;
7332 *is_infinite = 1;
7333 return 1;
7334 }
7335
7336 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7337 {
7338 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7339
7340 #ifndef OPENSSL_NO_QUIC
7341 if (IS_QUIC(s))
7342 return ossl_quic_get_rpoll_descriptor(s, desc);
7343 #endif
7344
7345 if (sc == NULL || sc->rbio == NULL)
7346 return 0;
7347
7348 return BIO_get_rpoll_descriptor(sc->rbio, desc);
7349 }
7350
7351 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7352 {
7353 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7354
7355 #ifndef OPENSSL_NO_QUIC
7356 if (IS_QUIC(s))
7357 return ossl_quic_get_wpoll_descriptor(s, desc);
7358 #endif
7359
7360 if (sc == NULL || sc->wbio == NULL)
7361 return 0;
7362
7363 return BIO_get_wpoll_descriptor(sc->wbio, desc);
7364 }
7365
7366 int SSL_net_read_desired(SSL *s)
7367 {
7368 #ifndef OPENSSL_NO_QUIC
7369 if (!IS_QUIC(s))
7370 return SSL_want_read(s);
7371
7372 return ossl_quic_get_net_read_desired(s);
7373 #else
7374 return SSL_want_read(s);
7375 #endif
7376 }
7377
7378 int SSL_net_write_desired(SSL *s)
7379 {
7380 #ifndef OPENSSL_NO_QUIC
7381 if (!IS_QUIC(s))
7382 return SSL_want_write(s);
7383
7384 return ossl_quic_get_net_write_desired(s);
7385 #else
7386 return SSL_want_write(s);
7387 #endif
7388 }
7389
7390 int SSL_set_blocking_mode(SSL *s, int blocking)
7391 {
7392 #ifndef OPENSSL_NO_QUIC
7393 if (!IS_QUIC(s))
7394 return 0;
7395
7396 return ossl_quic_conn_set_blocking_mode(s, blocking);
7397 #else
7398 return 0;
7399 #endif
7400 }
7401
7402 int SSL_get_blocking_mode(SSL *s)
7403 {
7404 #ifndef OPENSSL_NO_QUIC
7405 if (!IS_QUIC(s))
7406 return -1;
7407
7408 return ossl_quic_conn_get_blocking_mode(s);
7409 #else
7410 return -1;
7411 #endif
7412 }
7413
7414 int SSL_set1_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7415 {
7416 #ifndef OPENSSL_NO_QUIC
7417 if (!IS_QUIC(s))
7418 return 0;
7419
7420 return ossl_quic_conn_set_initial_peer_addr(s, peer_addr);
7421 #else
7422 return 0;
7423 #endif
7424 }
7425
7426 int SSL_shutdown_ex(SSL *ssl, uint64_t flags,
7427 const SSL_SHUTDOWN_EX_ARGS *args,
7428 size_t args_len)
7429 {
7430 #ifndef OPENSSL_NO_QUIC
7431 if (!IS_QUIC(ssl))
7432 return SSL_shutdown(ssl);
7433
7434 return ossl_quic_conn_shutdown(ssl, flags, args, args_len);
7435 #else
7436 return SSL_shutdown(ssl);
7437 #endif
7438 }
7439
7440 int SSL_stream_conclude(SSL *ssl, uint64_t flags)
7441 {
7442 #ifndef OPENSSL_NO_QUIC
7443 if (!IS_QUIC(ssl))
7444 return 0;
7445
7446 return ossl_quic_conn_stream_conclude(ssl);
7447 #else
7448 return 0;
7449 #endif
7450 }
7451
7452 SSL *SSL_new_stream(SSL *s, uint64_t flags)
7453 {
7454 #ifndef OPENSSL_NO_QUIC
7455 if (!IS_QUIC(s))
7456 return NULL;
7457
7458 return ossl_quic_conn_stream_new(s, flags);
7459 #else
7460 return NULL;
7461 #endif
7462 }
7463
7464 SSL *SSL_get0_connection(SSL *s)
7465 {
7466 #ifndef OPENSSL_NO_QUIC
7467 if (!IS_QUIC(s))
7468 return s;
7469
7470 return ossl_quic_get0_connection(s);
7471 #else
7472 return s;
7473 #endif
7474 }
7475
7476 int SSL_is_connection(SSL *s)
7477 {
7478 return SSL_get0_connection(s) == s;
7479 }
7480
7481 int SSL_get_stream_type(SSL *s)
7482 {
7483 #ifndef OPENSSL_NO_QUIC
7484 if (!IS_QUIC(s))
7485 return SSL_STREAM_TYPE_BIDI;
7486
7487 return ossl_quic_get_stream_type(s);
7488 #else
7489 return SSL_STREAM_TYPE_BIDI;
7490 #endif
7491 }
7492
7493 uint64_t SSL_get_stream_id(SSL *s)
7494 {
7495 #ifndef OPENSSL_NO_QUIC
7496 if (!IS_QUIC(s))
7497 return UINT64_MAX;
7498
7499 return ossl_quic_get_stream_id(s);
7500 #else
7501 return UINT64_MAX;
7502 #endif
7503 }
7504
7505 int SSL_is_stream_local(SSL *s)
7506 {
7507 #ifndef OPENSSL_NO_QUIC
7508 if (!IS_QUIC(s))
7509 return -1;
7510
7511 return ossl_quic_is_stream_local(s);
7512 #else
7513 return -1;
7514 #endif
7515 }
7516
7517 int SSL_set_default_stream_mode(SSL *s, uint32_t mode)
7518 {
7519 #ifndef OPENSSL_NO_QUIC
7520 if (!IS_QUIC(s))
7521 return 0;
7522
7523 return ossl_quic_set_default_stream_mode(s, mode);
7524 #else
7525 return 0;
7526 #endif
7527 }
7528
7529 int SSL_set_incoming_stream_policy(SSL *s, int policy, uint64_t aec)
7530 {
7531 #ifndef OPENSSL_NO_QUIC
7532 if (!IS_QUIC(s))
7533 return 0;
7534
7535 return ossl_quic_set_incoming_stream_policy(s, policy, aec);
7536 #else
7537 return 0;
7538 #endif
7539 }
7540
7541 SSL *SSL_accept_stream(SSL *s, uint64_t flags)
7542 {
7543 #ifndef OPENSSL_NO_QUIC
7544 if (!IS_QUIC(s))
7545 return NULL;
7546
7547 return ossl_quic_accept_stream(s, flags);
7548 #else
7549 return NULL;
7550 #endif
7551 }
7552
7553 size_t SSL_get_accept_stream_queue_len(SSL *s)
7554 {
7555 #ifndef OPENSSL_NO_QUIC
7556 if (!IS_QUIC(s))
7557 return 0;
7558
7559 return ossl_quic_get_accept_stream_queue_len(s);
7560 #else
7561 return 0;
7562 #endif
7563 }
7564
7565 int SSL_stream_reset(SSL *s,
7566 const SSL_STREAM_RESET_ARGS *args,
7567 size_t args_len)
7568 {
7569 #ifndef OPENSSL_NO_QUIC
7570 if (!IS_QUIC(s))
7571 return 0;
7572
7573 return ossl_quic_stream_reset(s, args, args_len);
7574 #else
7575 return 0;
7576 #endif
7577 }
7578
7579 int SSL_get_stream_read_state(SSL *s)
7580 {
7581 #ifndef OPENSSL_NO_QUIC
7582 if (!IS_QUIC(s))
7583 return SSL_STREAM_STATE_NONE;
7584
7585 return ossl_quic_get_stream_read_state(s);
7586 #else
7587 return SSL_STREAM_STATE_NONE;
7588 #endif
7589 }
7590
7591 int SSL_get_stream_write_state(SSL *s)
7592 {
7593 #ifndef OPENSSL_NO_QUIC
7594 if (!IS_QUIC(s))
7595 return SSL_STREAM_STATE_NONE;
7596
7597 return ossl_quic_get_stream_write_state(s);
7598 #else
7599 return SSL_STREAM_STATE_NONE;
7600 #endif
7601 }
7602
7603 int SSL_get_stream_read_error_code(SSL *s, uint64_t *app_error_code)
7604 {
7605 #ifndef OPENSSL_NO_QUIC
7606 if (!IS_QUIC(s))
7607 return -1;
7608
7609 return ossl_quic_get_stream_read_error_code(s, app_error_code);
7610 #else
7611 return -1;
7612 #endif
7613 }
7614
7615 int SSL_get_stream_write_error_code(SSL *s, uint64_t *app_error_code)
7616 {
7617 #ifndef OPENSSL_NO_QUIC
7618 if (!IS_QUIC(s))
7619 return -1;
7620
7621 return ossl_quic_get_stream_write_error_code(s, app_error_code);
7622 #else
7623 return -1;
7624 #endif
7625 }
7626
7627 int SSL_get_conn_close_info(SSL *s, SSL_CONN_CLOSE_INFO *info,
7628 size_t info_len)
7629 {
7630 #ifndef OPENSSL_NO_QUIC
7631 if (!IS_QUIC(s))
7632 return -1;
7633
7634 return ossl_quic_get_conn_close_info(s, info, info_len);
7635 #else
7636 return -1;
7637 #endif
7638 }
7639
7640 int SSL_get_value_uint(SSL *s, uint32_t class_, uint32_t id,
7641 uint64_t *value)
7642 {
7643 #ifndef OPENSSL_NO_QUIC
7644 if (IS_QUIC(s))
7645 return ossl_quic_get_value_uint(s, class_, id, value);
7646 #endif
7647
7648 ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL);
7649 return 0;
7650 }
7651
7652 int SSL_set_value_uint(SSL *s, uint32_t class_, uint32_t id,
7653 uint64_t value)
7654 {
7655 #ifndef OPENSSL_NO_QUIC
7656 if (IS_QUIC(s))
7657 return ossl_quic_set_value_uint(s, class_, id, value);
7658 #endif
7659
7660 ERR_raise(ERR_LIB_SSL, SSL_R_UNSUPPORTED_PROTOCOL);
7661 return 0;
7662 }
7663
7664 int SSL_add_expected_rpk(SSL *s, EVP_PKEY *rpk)
7665 {
7666 unsigned char *data = NULL;
7667 SSL_DANE *dane = SSL_get0_dane(s);
7668 int ret;
7669
7670 if (dane == NULL || dane->dctx == NULL)
7671 return 0;
7672 if ((ret = i2d_PUBKEY(rpk, &data)) <= 0)
7673 return 0;
7674
7675 ret = SSL_dane_tlsa_add(s, DANETLS_USAGE_DANE_EE,
7676 DANETLS_SELECTOR_SPKI,
7677 DANETLS_MATCHING_FULL,
7678 data, (size_t)ret) > 0;
7679 OPENSSL_free(data);
7680 return ret;
7681 }
7682
7683 EVP_PKEY *SSL_get0_peer_rpk(const SSL *s)
7684 {
7685 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7686
7687 if (sc == NULL || sc->session == NULL)
7688 return NULL;
7689 return sc->session->peer_rpk;
7690 }
7691
7692 int SSL_get_negotiated_client_cert_type(const SSL *s)
7693 {
7694 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7695
7696 if (sc == NULL)
7697 return 0;
7698
7699 return sc->ext.client_cert_type;
7700 }
7701
7702 int SSL_get_negotiated_server_cert_type(const SSL *s)
7703 {
7704 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7705
7706 if (sc == NULL)
7707 return 0;
7708
7709 return sc->ext.server_cert_type;
7710 }
7711
7712 static int validate_cert_type(const unsigned char *val, size_t len)
7713 {
7714 size_t i;
7715 int saw_rpk = 0;
7716 int saw_x509 = 0;
7717
7718 if (val == NULL && len == 0)
7719 return 1;
7720
7721 if (val == NULL || len == 0)
7722 return 0;
7723
7724 for (i = 0; i < len; i++) {
7725 switch (val[i]) {
7726 case TLSEXT_cert_type_rpk:
7727 if (saw_rpk)
7728 return 0;
7729 saw_rpk = 1;
7730 break;
7731 case TLSEXT_cert_type_x509:
7732 if (saw_x509)
7733 return 0;
7734 saw_x509 = 1;
7735 break;
7736 case TLSEXT_cert_type_pgp:
7737 case TLSEXT_cert_type_1609dot2:
7738 default:
7739 return 0;
7740 }
7741 }
7742 return 1;
7743 }
7744
7745 static int set_cert_type(unsigned char **cert_type,
7746 size_t *cert_type_len,
7747 const unsigned char *val,
7748 size_t len)
7749 {
7750 unsigned char *tmp = NULL;
7751
7752 if (!validate_cert_type(val, len))
7753 return 0;
7754
7755 if (val != NULL && (tmp = OPENSSL_memdup(val, len)) == NULL)
7756 return 0;
7757
7758 OPENSSL_free(*cert_type);
7759 *cert_type = tmp;
7760 *cert_type_len = len;
7761 return 1;
7762 }
7763
7764 int SSL_set1_client_cert_type(SSL *s, const unsigned char *val, size_t len)
7765 {
7766 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7767
7768 return set_cert_type(&sc->client_cert_type, &sc->client_cert_type_len,
7769 val, len);
7770 }
7771
7772 int SSL_set1_server_cert_type(SSL *s, const unsigned char *val, size_t len)
7773 {
7774 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7775
7776 return set_cert_type(&sc->server_cert_type, &sc->server_cert_type_len,
7777 val, len);
7778 }
7779
7780 int SSL_CTX_set1_client_cert_type(SSL_CTX *ctx, const unsigned char *val, size_t len)
7781 {
7782 return set_cert_type(&ctx->client_cert_type, &ctx->client_cert_type_len,
7783 val, len);
7784 }
7785
7786 int SSL_CTX_set1_server_cert_type(SSL_CTX *ctx, const unsigned char *val, size_t len)
7787 {
7788 return set_cert_type(&ctx->server_cert_type, &ctx->server_cert_type_len,
7789 val, len);
7790 }
7791
7792 int SSL_get0_client_cert_type(const SSL *s, unsigned char **t, size_t *len)
7793 {
7794 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7795
7796 if (t == NULL || len == NULL)
7797 return 0;
7798
7799 *t = sc->client_cert_type;
7800 *len = sc->client_cert_type_len;
7801 return 1;
7802 }
7803
7804 int SSL_get0_server_cert_type(const SSL *s, unsigned char **t, size_t *len)
7805 {
7806 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
7807
7808 if (t == NULL || len == NULL)
7809 return 0;
7810
7811 *t = sc->server_cert_type;
7812 *len = sc->server_cert_type_len;
7813 return 1;
7814 }
7815
7816 int SSL_CTX_get0_client_cert_type(const SSL_CTX *ctx, unsigned char **t, size_t *len)
7817 {
7818 if (t == NULL || len == NULL)
7819 return 0;
7820
7821 *t = ctx->client_cert_type;
7822 *len = ctx->client_cert_type_len;
7823 return 1;
7824 }
7825
7826 int SSL_CTX_get0_server_cert_type(const SSL_CTX *ctx, unsigned char **t, size_t *len)
7827 {
7828 if (t == NULL || len == NULL)
7829 return 0;
7830
7831 *t = ctx->server_cert_type;
7832 *len = ctx->server_cert_type_len;
7833 return 1;
7834 }
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