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