2 * Copyright 1995-2022 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.
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
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/refcount.h"
27 #include "internal/ktls.h"
29 static int ssl_undefined_function_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
30 int t, SSL_MAC_BUF *mac, size_t macsize)
32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35 static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
36 unsigned char *s, int t)
38 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
41 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
42 unsigned char *s, size_t t, size_t *u)
44 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
47 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
49 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
52 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
53 size_t s, unsigned char *t)
55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58 static int ssl_undefined_function_6(int r)
60 return ssl_undefined_function(NULL);
63 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
64 size_t s, const char *t, size_t u,
65 const unsigned char *v, size_t w, int x)
67 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
70 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
72 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
75 SSL3_ENC_METHOD ssl3_undef_enc_method = {
76 ssl_undefined_function_1,
77 ssl_undefined_function_2,
78 ssl_undefined_function_8,
79 ssl_undefined_function_3,
80 ssl_undefined_function_4,
81 ssl_undefined_function_5,
82 NULL, /* client_finished_label */
83 0, /* client_finished_label_len */
84 NULL, /* server_finished_label */
85 0, /* server_finished_label_len */
86 ssl_undefined_function_6,
87 ssl_undefined_function_7,
90 struct ssl_async_args {
94 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
96 int (*func_read) (SSL *, void *, size_t, size_t *);
97 int (*func_write) (SSL *, const void *, size_t, size_t *);
98 int (*func_other) (SSL *);
102 static const struct {
108 DANETLS_MATCHING_FULL, 0, NID_undef
111 DANETLS_MATCHING_2256, 1, NID_sha256
114 DANETLS_MATCHING_2512, 2, NID_sha512
118 static int dane_ctx_enable(struct dane_ctx_st *dctx)
120 const EVP_MD **mdevp;
122 uint8_t mdmax = DANETLS_MATCHING_LAST;
123 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
126 if (dctx->mdevp != NULL)
129 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
130 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
132 if (mdord == NULL || mdevp == NULL) {
135 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
139 /* Install default entries */
140 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
143 if (dane_mds[i].nid == NID_undef ||
144 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
146 mdevp[dane_mds[i].mtype] = md;
147 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
157 static void dane_ctx_final(struct dane_ctx_st *dctx)
159 OPENSSL_free(dctx->mdevp);
162 OPENSSL_free(dctx->mdord);
167 static void tlsa_free(danetls_record *t)
171 OPENSSL_free(t->data);
172 EVP_PKEY_free(t->spki);
176 static void dane_final(SSL_DANE *dane)
178 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
181 OSSL_STACK_OF_X509_free(dane->certs);
184 X509_free(dane->mcert);
192 * dane_copy - Copy dane configuration, sans verification state.
194 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
199 if (!DANETLS_ENABLED(&from->dane))
202 num = sk_danetls_record_num(from->dane.trecs);
203 dane_final(&to->dane);
204 to->dane.flags = from->dane.flags;
205 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
206 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
208 if (to->dane.trecs == NULL) {
209 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
213 for (i = 0; i < num; ++i) {
214 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
216 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
217 t->selector, t->mtype, t->data, t->dlen) <= 0)
223 static int dane_mtype_set(struct dane_ctx_st *dctx,
224 const EVP_MD *md, uint8_t mtype, uint8_t ord)
228 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
229 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
233 if (mtype > dctx->mdmax) {
234 const EVP_MD **mdevp;
236 int n = ((int)mtype) + 1;
238 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
240 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
245 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
247 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
252 /* Zero-fill any gaps */
253 for (i = dctx->mdmax + 1; i < mtype; ++i) {
261 dctx->mdevp[mtype] = md;
262 /* Coerce ordinal of disabled matching types to 0 */
263 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
268 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
270 if (mtype > dane->dctx->mdmax)
272 return dane->dctx->mdevp[mtype];
275 static int dane_tlsa_add(SSL_DANE *dane,
278 uint8_t mtype, const unsigned char *data, size_t dlen)
281 const EVP_MD *md = NULL;
282 int ilen = (int)dlen;
286 if (dane->trecs == NULL) {
287 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
291 if (ilen < 0 || dlen != (size_t)ilen) {
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
296 if (usage > DANETLS_USAGE_LAST) {
297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
301 if (selector > DANETLS_SELECTOR_LAST) {
302 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
306 if (mtype != DANETLS_MATCHING_FULL) {
307 md = tlsa_md_get(dane, mtype);
309 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
314 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
315 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
319 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
323 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
324 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
329 t->selector = selector;
331 t->data = OPENSSL_malloc(dlen);
332 if (t->data == NULL) {
334 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
337 memcpy(t->data, data, dlen);
340 /* Validate and cache full certificate or public key */
341 if (mtype == DANETLS_MATCHING_FULL) {
342 const unsigned char *p = data;
344 EVP_PKEY *pkey = NULL;
347 case DANETLS_SELECTOR_CERT:
348 if (!d2i_X509(&cert, &p, ilen) || p < data ||
349 dlen != (size_t)(p - data)) {
351 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
354 if (X509_get0_pubkey(cert) == NULL) {
356 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
360 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
366 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
367 * records that contain full certificates of trust-anchors that are
368 * not present in the wire chain. For usage PKIX-TA(0), we augment
369 * the chain with untrusted Full(0) certificates from DNS, in case
370 * they are missing from the chain.
372 if ((dane->certs == NULL &&
373 (dane->certs = sk_X509_new_null()) == NULL) ||
374 !sk_X509_push(dane->certs, cert)) {
375 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
382 case DANETLS_SELECTOR_SPKI:
383 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
384 dlen != (size_t)(p - data)) {
386 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
391 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
392 * records that contain full bare keys of trust-anchors that are
393 * not present in the wire chain.
395 if (usage == DANETLS_USAGE_DANE_TA)
404 * Find the right insertion point for the new record.
406 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
407 * they can be processed first, as they require no chain building, and no
408 * expiration or hostname checks. Because DANE-EE(3) is numerically
409 * largest, this is accomplished via descending sort by "usage".
411 * We also sort in descending order by matching ordinal to simplify
412 * the implementation of digest agility in the verification code.
414 * The choice of order for the selector is not significant, so we
415 * use the same descending order for consistency.
417 num = sk_danetls_record_num(dane->trecs);
418 for (i = 0; i < num; ++i) {
419 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
421 if (rec->usage > usage)
423 if (rec->usage < usage)
425 if (rec->selector > selector)
427 if (rec->selector < selector)
429 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
434 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
436 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
439 dane->umask |= DANETLS_USAGE_BIT(usage);
445 * Return 0 if there is only one version configured and it was disabled
446 * at configure time. Return 1 otherwise.
448 static int ssl_check_allowed_versions(int min_version, int max_version)
450 int minisdtls = 0, maxisdtls = 0;
452 /* Figure out if we're doing DTLS versions or TLS versions */
453 if (min_version == DTLS1_BAD_VER
454 || min_version >> 8 == DTLS1_VERSION_MAJOR)
456 if (max_version == DTLS1_BAD_VER
457 || max_version >> 8 == DTLS1_VERSION_MAJOR)
459 /* A wildcard version of 0 could be DTLS or TLS. */
460 if ((minisdtls && !maxisdtls && max_version != 0)
461 || (maxisdtls && !minisdtls && min_version != 0)) {
462 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
466 if (minisdtls || maxisdtls) {
467 /* Do DTLS version checks. */
468 if (min_version == 0)
469 /* Ignore DTLS1_BAD_VER */
470 min_version = DTLS1_VERSION;
471 if (max_version == 0)
472 max_version = DTLS1_2_VERSION;
473 #ifdef OPENSSL_NO_DTLS1_2
474 if (max_version == DTLS1_2_VERSION)
475 max_version = DTLS1_VERSION;
477 #ifdef OPENSSL_NO_DTLS1
478 if (min_version == DTLS1_VERSION)
479 min_version = DTLS1_2_VERSION;
481 /* Done massaging versions; do the check. */
483 #ifdef OPENSSL_NO_DTLS1
484 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
485 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
487 #ifdef OPENSSL_NO_DTLS1_2
488 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
489 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
494 /* Regular TLS version checks. */
495 if (min_version == 0)
496 min_version = SSL3_VERSION;
497 if (max_version == 0)
498 max_version = TLS1_3_VERSION;
499 #ifdef OPENSSL_NO_TLS1_3
500 if (max_version == TLS1_3_VERSION)
501 max_version = TLS1_2_VERSION;
503 #ifdef OPENSSL_NO_TLS1_2
504 if (max_version == TLS1_2_VERSION)
505 max_version = TLS1_1_VERSION;
507 #ifdef OPENSSL_NO_TLS1_1
508 if (max_version == TLS1_1_VERSION)
509 max_version = TLS1_VERSION;
511 #ifdef OPENSSL_NO_TLS1
512 if (max_version == TLS1_VERSION)
513 max_version = SSL3_VERSION;
515 #ifdef OPENSSL_NO_SSL3
516 if (min_version == SSL3_VERSION)
517 min_version = TLS1_VERSION;
519 #ifdef OPENSSL_NO_TLS1
520 if (min_version == TLS1_VERSION)
521 min_version = TLS1_1_VERSION;
523 #ifdef OPENSSL_NO_TLS1_1
524 if (min_version == TLS1_1_VERSION)
525 min_version = TLS1_2_VERSION;
527 #ifdef OPENSSL_NO_TLS1_2
528 if (min_version == TLS1_2_VERSION)
529 min_version = TLS1_3_VERSION;
531 /* Done massaging versions; do the check. */
533 #ifdef OPENSSL_NO_SSL3
534 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
536 #ifdef OPENSSL_NO_TLS1
537 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
539 #ifdef OPENSSL_NO_TLS1_1
540 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
542 #ifdef OPENSSL_NO_TLS1_2
543 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
545 #ifdef OPENSSL_NO_TLS1_3
546 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
554 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
556 * Define a VPROC function for HP NonStop build ssl library.
557 * This is used by platform version identification tools.
558 * Do not inline this procedure or make it static.
560 # define OPENSSL_VPROC_STRING_(x) x##_SSL
561 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
562 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
563 void OPENSSL_VPROC_FUNC(void) {}
567 static void clear_ciphers(SSL_CONNECTION *s)
569 /* clear the current cipher */
570 ssl_clear_cipher_ctx(s);
571 ssl_clear_hash_ctx(&s->read_hash);
572 ssl_clear_hash_ctx(&s->write_hash);
575 int SSL_clear(SSL *s)
577 if (s->method == NULL) {
578 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
582 return s->method->ssl_reset(s);
585 int ossl_ssl_connection_reset(SSL *s)
587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
592 if (ssl_clear_bad_session(sc)) {
593 SSL_SESSION_free(sc->session);
596 SSL_SESSION_free(sc->psksession);
597 sc->psksession = NULL;
598 OPENSSL_free(sc->psksession_id);
599 sc->psksession_id = NULL;
600 sc->psksession_id_len = 0;
601 sc->hello_retry_request = 0;
602 sc->sent_tickets = 0;
608 if (sc->renegotiate) {
609 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
613 ossl_statem_clear(sc);
615 /* TODO(QUIC): Version handling not yet clear */
616 sc->version = s->method->version;
617 sc->client_version = sc->version;
618 sc->rwstate = SSL_NOTHING;
620 BUF_MEM_free(sc->init_buf);
623 sc->first_packet = 0;
625 sc->key_update = SSL_KEY_UPDATE_NONE;
627 EVP_MD_CTX_free(sc->pha_dgst);
630 /* Reset DANE verification result state */
633 X509_free(sc->dane.mcert);
634 sc->dane.mcert = NULL;
635 sc->dane.mtlsa = NULL;
637 /* Clear the verification result peername */
638 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
640 /* Clear any shared connection state */
641 OPENSSL_free(sc->shared_sigalgs);
642 sc->shared_sigalgs = NULL;
643 sc->shared_sigalgslen = 0;
646 * Check to see if we were changed into a different method, if so, revert
649 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
650 s->method->ssl_deinit(s);
651 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
652 if (!s->method->ssl_init(s))
655 if (!s->method->ssl_clear(s))
659 RECORD_LAYER_clear(&sc->rlayer);
660 BIO_free(sc->rlayer.rrlnext);
661 sc->rlayer.rrlnext = NULL;
663 if (!ssl_set_new_record_layer(sc,
664 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
665 OSSL_RECORD_DIRECTION_READ,
666 OSSL_RECORD_PROTECTION_LEVEL_NONE,
667 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
668 NID_undef, NULL, NULL)) {
669 /* SSLfatal already called */
672 if (!ssl_set_new_record_layer(sc,
673 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
674 OSSL_RECORD_DIRECTION_WRITE,
675 OSSL_RECORD_PROTECTION_LEVEL_NONE,
676 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
677 NID_undef, NULL, NULL)) {
678 /* SSLfatal already called */
685 #ifndef OPENSSL_NO_DEPRECATED_3_0
686 /** Used to change an SSL_CTXs default SSL method type */
687 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
689 STACK_OF(SSL_CIPHER) *sk;
693 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
694 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
697 sk = ssl_create_cipher_list(ctx,
698 ctx->tls13_ciphersuites,
700 &(ctx->cipher_list_by_id),
701 OSSL_default_cipher_list(), ctx->cert);
702 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
703 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
710 SSL *SSL_new(SSL_CTX *ctx)
713 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
716 if (ctx->method == NULL) {
717 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
720 return ctx->method->ssl_new(ctx);
723 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
728 ssl->lock = CRYPTO_THREAD_lock_new();
729 if (ssl->lock == NULL)
735 ssl->method = ctx->method;
737 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
743 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
748 s = OPENSSL_zalloc(sizeof(*s));
753 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
759 #ifndef OPENSSL_NO_QUIC
760 /* set the parent (user visible) ssl to self */
764 RECORD_LAYER_init(&s->rlayer, s);
766 s->options = ctx->options;
767 s->dane.flags = ctx->dane.flags;
768 s->min_proto_version = ctx->min_proto_version;
769 s->max_proto_version = ctx->max_proto_version;
771 s->max_cert_list = ctx->max_cert_list;
772 s->max_early_data = ctx->max_early_data;
773 s->recv_max_early_data = ctx->recv_max_early_data;
774 s->num_tickets = ctx->num_tickets;
775 s->pha_enabled = ctx->pha_enabled;
777 /* Shallow copy of the ciphersuites stack */
778 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
779 if (s->tls13_ciphersuites == NULL)
783 * Earlier library versions used to copy the pointer to the CERT, not
784 * its contents; only when setting new parameters for the per-SSL
785 * copy, ssl_cert_new would be called (and the direct reference to
786 * the per-SSL_CTX settings would be lost, but those still were
787 * indirectly accessed for various purposes, and for that reason they
788 * used to be known as s->ctx->default_cert). Now we don't look at the
789 * SSL_CTX's CERT after having duplicated it once.
791 s->cert = ssl_cert_dup(ctx->cert);
795 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
796 s->msg_callback = ctx->msg_callback;
797 s->msg_callback_arg = ctx->msg_callback_arg;
798 s->verify_mode = ctx->verify_mode;
799 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
800 s->record_padding_cb = ctx->record_padding_cb;
801 s->record_padding_arg = ctx->record_padding_arg;
802 s->block_padding = ctx->block_padding;
803 s->sid_ctx_length = ctx->sid_ctx_length;
804 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
806 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
807 s->verify_callback = ctx->default_verify_callback;
808 s->generate_session_id = ctx->generate_session_id;
810 s->param = X509_VERIFY_PARAM_new();
811 if (s->param == NULL)
813 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
814 s->quiet_shutdown = ctx->quiet_shutdown;
816 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
817 s->max_send_fragment = ctx->max_send_fragment;
818 s->split_send_fragment = ctx->split_send_fragment;
819 s->max_pipelines = ctx->max_pipelines;
820 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
823 s->ext.debug_arg = NULL;
824 s->ext.ticket_expected = 0;
825 s->ext.status_type = ctx->ext.status_type;
826 s->ext.status_expected = 0;
827 s->ext.ocsp.ids = NULL;
828 s->ext.ocsp.exts = NULL;
829 s->ext.ocsp.resp = NULL;
830 s->ext.ocsp.resp_len = 0;
832 s->session_ctx = ctx;
833 if (ctx->ext.ecpointformats) {
834 s->ext.ecpointformats =
835 OPENSSL_memdup(ctx->ext.ecpointformats,
836 ctx->ext.ecpointformats_len);
837 if (!s->ext.ecpointformats) {
838 s->ext.ecpointformats_len = 0;
841 s->ext.ecpointformats_len =
842 ctx->ext.ecpointformats_len;
844 if (ctx->ext.supportedgroups) {
845 s->ext.supportedgroups =
846 OPENSSL_memdup(ctx->ext.supportedgroups,
847 ctx->ext.supportedgroups_len
848 * sizeof(*ctx->ext.supportedgroups));
849 if (!s->ext.supportedgroups) {
850 s->ext.supportedgroups_len = 0;
853 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
856 #ifndef OPENSSL_NO_NEXTPROTONEG
860 if (ctx->ext.alpn != NULL) {
861 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
862 if (s->ext.alpn == NULL) {
866 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
867 s->ext.alpn_len = ctx->ext.alpn_len;
870 s->verified_chain = NULL;
871 s->verify_result = X509_V_OK;
873 s->default_passwd_callback = ctx->default_passwd_callback;
874 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
876 s->key_update = SSL_KEY_UPDATE_NONE;
878 s->allow_early_data_cb = ctx->allow_early_data_cb;
879 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
881 if (!ssl->method->ssl_init(ssl))
884 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
889 #ifndef OPENSSL_NO_PSK
890 s->psk_client_callback = ctx->psk_client_callback;
891 s->psk_server_callback = ctx->psk_server_callback;
893 s->psk_find_session_cb = ctx->psk_find_session_cb;
894 s->psk_use_session_cb = ctx->psk_use_session_cb;
896 s->async_cb = ctx->async_cb;
897 s->async_cb_arg = ctx->async_cb_arg;
901 #ifndef OPENSSL_NO_CT
902 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
903 ctx->ct_validation_callback_arg))
910 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
914 int SSL_is_dtls(const SSL *s)
916 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
921 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
924 int SSL_up_ref(SSL *s)
928 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
931 REF_PRINT_COUNT("SSL", s);
932 REF_ASSERT_ISNT(i < 2);
933 return ((i > 1) ? 1 : 0);
936 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
937 unsigned int sid_ctx_len)
939 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
940 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
943 ctx->sid_ctx_length = sid_ctx_len;
944 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
949 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
950 unsigned int sid_ctx_len)
952 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
957 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
958 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
961 sc->sid_ctx_length = sid_ctx_len;
962 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
967 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
969 if (!CRYPTO_THREAD_write_lock(ctx->lock))
971 ctx->generate_session_id = cb;
972 CRYPTO_THREAD_unlock(ctx->lock);
976 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
978 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
980 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
982 sc->generate_session_id = cb;
983 CRYPTO_THREAD_unlock(ssl->lock);
987 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
991 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
992 * we can "construct" a session to give us the desired check - i.e. to
993 * find if there's a session in the hash table that would conflict with
994 * any new session built out of this id/id_len and the ssl_version in use
998 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1000 if (sc == NULL || id_len > sizeof(r.session_id))
1003 r.ssl_version = sc->version;
1004 r.session_id_length = id_len;
1005 memcpy(r.session_id, id, id_len);
1007 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1009 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1010 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1014 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1016 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1019 int SSL_set_purpose(SSL *s, int purpose)
1021 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1026 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1029 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1031 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1034 int SSL_set_trust(SSL *s, int trust)
1036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1041 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1044 int SSL_set1_host(SSL *s, const char *hostname)
1046 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1051 /* If a hostname is provided and parses as an IP address,
1052 * treat it as such. */
1053 if (hostname != NULL
1054 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1057 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1060 int SSL_add1_host(SSL *s, const char *hostname)
1062 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1067 /* If a hostname is provided and parses as an IP address,
1068 * treat it as such. */
1071 ASN1_OCTET_STRING *ip;
1074 ip = a2i_IPADDRESS(hostname);
1076 /* We didn't want it; only to check if it *is* an IP address */
1077 ASN1_OCTET_STRING_free(ip);
1079 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1082 OPENSSL_free(old_ip);
1083 /* There can be only one IP address */
1087 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1091 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1094 void SSL_set_hostflags(SSL *s, unsigned int flags)
1096 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1101 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1104 const char *SSL_get0_peername(SSL *s)
1106 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1111 return X509_VERIFY_PARAM_get0_peername(sc->param);
1114 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1116 return dane_ctx_enable(&ctx->dane);
1119 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1121 unsigned long orig = ctx->dane.flags;
1123 ctx->dane.flags |= flags;
1127 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1129 unsigned long orig = ctx->dane.flags;
1131 ctx->dane.flags &= ~flags;
1135 int SSL_dane_enable(SSL *s, const char *basedomain)
1138 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1144 if (s->ctx->dane.mdmax == 0) {
1145 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1148 if (dane->trecs != NULL) {
1149 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1154 * Default SNI name. This rejects empty names, while set1_host below
1155 * accepts them and disables host name checks. To avoid side-effects with
1156 * invalid input, set the SNI name first.
1158 if (sc->ext.hostname == NULL) {
1159 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1160 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1165 /* Primary RFC6125 reference identifier */
1166 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1167 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1173 dane->dctx = &s->ctx->dane;
1174 dane->trecs = sk_danetls_record_new_null();
1176 if (dane->trecs == NULL) {
1177 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1183 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1186 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1191 orig = sc->dane.flags;
1193 sc->dane.flags |= flags;
1197 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1200 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1205 orig = sc->dane.flags;
1207 sc->dane.flags &= ~flags;
1211 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1214 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1221 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1225 *mcert = dane->mcert;
1227 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1232 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1233 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1236 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1243 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1247 *usage = dane->mtlsa->usage;
1249 *selector = dane->mtlsa->selector;
1251 *mtype = dane->mtlsa->mtype;
1253 *data = dane->mtlsa->data;
1255 *dlen = dane->mtlsa->dlen;
1260 SSL_DANE *SSL_get0_dane(SSL *s)
1262 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1270 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1271 uint8_t mtype, const unsigned char *data, size_t dlen)
1273 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1278 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1281 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1284 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1287 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1289 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1292 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1294 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1299 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1302 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1307 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1309 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1317 void SSL_certs_clear(SSL *s)
1319 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1324 ssl_cert_clear_certs(sc->cert);
1327 void SSL_free(SSL *s)
1333 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1334 REF_PRINT_COUNT("SSL", s);
1337 REF_ASSERT_ISNT(i < 0);
1339 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1341 if (s->method != NULL)
1342 s->method->ssl_free(s);
1344 SSL_CTX_free(s->ctx);
1345 CRYPTO_THREAD_lock_free(s->lock);
1350 void ossl_ssl_connection_free(SSL *ssl)
1354 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1358 X509_VERIFY_PARAM_free(s->param);
1359 dane_final(&s->dane);
1361 RECORD_LAYER_clear(&s->rlayer);
1363 /* Ignore return value */
1364 ssl_free_wbio_buffer(s);
1366 BIO_free_all(s->wbio);
1368 BIO_free_all(s->rbio);
1371 BUF_MEM_free(s->init_buf);
1373 /* add extra stuff */
1374 sk_SSL_CIPHER_free(s->cipher_list);
1375 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1376 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1377 sk_SSL_CIPHER_free(s->peer_ciphers);
1379 /* Make the next call work :-) */
1380 if (s->session != NULL) {
1381 ssl_clear_bad_session(s);
1382 SSL_SESSION_free(s->session);
1384 SSL_SESSION_free(s->psksession);
1385 OPENSSL_free(s->psksession_id);
1389 ssl_cert_free(s->cert);
1390 OPENSSL_free(s->shared_sigalgs);
1391 /* Free up if allocated */
1393 OPENSSL_free(s->ext.hostname);
1394 SSL_CTX_free(s->session_ctx);
1395 OPENSSL_free(s->ext.ecpointformats);
1396 OPENSSL_free(s->ext.peer_ecpointformats);
1397 OPENSSL_free(s->ext.supportedgroups);
1398 OPENSSL_free(s->ext.peer_supportedgroups);
1399 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1400 #ifndef OPENSSL_NO_OCSP
1401 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1403 #ifndef OPENSSL_NO_CT
1404 SCT_LIST_free(s->scts);
1405 OPENSSL_free(s->ext.scts);
1407 OPENSSL_free(s->ext.ocsp.resp);
1408 OPENSSL_free(s->ext.alpn);
1409 OPENSSL_free(s->ext.tls13_cookie);
1410 if (s->clienthello != NULL)
1411 OPENSSL_free(s->clienthello->pre_proc_exts);
1412 OPENSSL_free(s->clienthello);
1413 OPENSSL_free(s->pha_context);
1414 EVP_MD_CTX_free(s->pha_dgst);
1416 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1417 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1419 OSSL_STACK_OF_X509_free(s->verified_chain);
1421 if (ssl->method != NULL)
1422 ssl->method->ssl_deinit(ssl);
1424 ASYNC_WAIT_CTX_free(s->waitctx);
1426 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1427 OPENSSL_free(s->ext.npn);
1430 #ifndef OPENSSL_NO_SRTP
1431 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1435 void SSL_set0_rbio(SSL *s, BIO *rbio)
1437 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1442 BIO_free_all(sc->rbio);
1444 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1447 void SSL_set0_wbio(SSL *s, BIO *wbio)
1449 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1455 * If the output buffering BIO is still in place, remove it
1457 if (sc->bbio != NULL)
1458 sc->wbio = BIO_pop(sc->wbio);
1460 BIO_free_all(sc->wbio);
1463 /* Re-attach |bbio| to the new |wbio|. */
1464 if (sc->bbio != NULL)
1465 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1468 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1471 * For historical reasons, this function has many different cases in
1472 * ownership handling.
1475 /* If nothing has changed, do nothing */
1476 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1480 * If the two arguments are equal then one fewer reference is granted by the
1481 * caller than we want to take
1483 if (rbio != NULL && rbio == wbio)
1487 * If only the wbio is changed only adopt one reference.
1489 if (rbio == SSL_get_rbio(s)) {
1490 SSL_set0_wbio(s, wbio);
1494 * There is an asymmetry here for historical reasons. If only the rbio is
1495 * changed AND the rbio and wbio were originally different, then we only
1496 * adopt one reference.
1498 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1499 SSL_set0_rbio(s, rbio);
1503 /* Otherwise, adopt both references. */
1504 SSL_set0_rbio(s, rbio);
1505 SSL_set0_wbio(s, wbio);
1508 BIO *SSL_get_rbio(const SSL *s)
1510 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1518 BIO *SSL_get_wbio(const SSL *s)
1520 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1525 if (sc->bbio != NULL) {
1527 * If |bbio| is active, the true caller-configured BIO is its
1530 return BIO_next(sc->bbio);
1535 int SSL_get_fd(const SSL *s)
1537 return SSL_get_rfd(s);
1540 int SSL_get_rfd(const SSL *s)
1545 b = SSL_get_rbio(s);
1546 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1548 BIO_get_fd(r, &ret);
1552 int SSL_get_wfd(const SSL *s)
1557 b = SSL_get_wbio(s);
1558 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1560 BIO_get_fd(r, &ret);
1564 #ifndef OPENSSL_NO_SOCK
1565 int SSL_set_fd(SSL *s, int fd)
1570 bio = BIO_new(BIO_s_socket());
1573 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1576 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1577 SSL_set_bio(s, bio, bio);
1578 #ifndef OPENSSL_NO_KTLS
1580 * The new socket is created successfully regardless of ktls_enable.
1581 * ktls_enable doesn't change any functionality of the socket, except
1582 * changing the setsockopt to enable the processing of ktls_start.
1583 * Thus, it is not a problem to call it for non-TLS sockets.
1586 #endif /* OPENSSL_NO_KTLS */
1592 int SSL_set_wfd(SSL *s, int fd)
1594 BIO *rbio = SSL_get_rbio(s);
1596 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1597 || (int)BIO_get_fd(rbio, NULL) != fd) {
1598 BIO *bio = BIO_new(BIO_s_socket());
1601 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1604 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1605 SSL_set0_wbio(s, bio);
1606 #ifndef OPENSSL_NO_KTLS
1608 * The new socket is created successfully regardless of ktls_enable.
1609 * ktls_enable doesn't change any functionality of the socket, except
1610 * changing the setsockopt to enable the processing of ktls_start.
1611 * Thus, it is not a problem to call it for non-TLS sockets.
1614 #endif /* OPENSSL_NO_KTLS */
1617 SSL_set0_wbio(s, rbio);
1622 int SSL_set_rfd(SSL *s, int fd)
1624 BIO *wbio = SSL_get_wbio(s);
1626 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1627 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1628 BIO *bio = BIO_new(BIO_s_socket());
1631 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1634 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1635 SSL_set0_rbio(s, bio);
1638 SSL_set0_rbio(s, wbio);
1645 /* return length of latest Finished message we sent, copy to 'buf' */
1646 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1649 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1654 ret = sc->s3.tmp.finish_md_len;
1657 memcpy(buf, sc->s3.tmp.finish_md, count);
1661 /* return length of latest Finished message we expected, copy to 'buf' */
1662 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1665 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1670 ret = sc->s3.tmp.peer_finish_md_len;
1673 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1677 int SSL_get_verify_mode(const SSL *s)
1679 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1684 return sc->verify_mode;
1687 int SSL_get_verify_depth(const SSL *s)
1689 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1694 return X509_VERIFY_PARAM_get_depth(sc->param);
1697 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1698 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1703 return sc->verify_callback;
1706 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1708 return ctx->verify_mode;
1711 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1713 return X509_VERIFY_PARAM_get_depth(ctx->param);
1716 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1717 return ctx->default_verify_callback;
1720 void SSL_set_verify(SSL *s, int mode,
1721 int (*callback) (int ok, X509_STORE_CTX *ctx))
1723 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1728 sc->verify_mode = mode;
1729 if (callback != NULL)
1730 sc->verify_callback = callback;
1733 void SSL_set_verify_depth(SSL *s, int depth)
1735 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1740 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1743 void SSL_set_read_ahead(SSL *s, int yes)
1745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1746 OSSL_PARAM options[2], *opts = options;
1751 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1753 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1754 &sc->rlayer.read_ahead);
1755 *opts = OSSL_PARAM_construct_end();
1757 /* Ignore return value */
1758 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1761 int SSL_get_read_ahead(const SSL *s)
1763 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1768 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1771 int SSL_pending(const SSL *s)
1773 size_t pending = s->method->ssl_pending(s);
1776 * SSL_pending cannot work properly if read-ahead is enabled
1777 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1778 * impossible to fix since SSL_pending cannot report errors that may be
1779 * observed while scanning the new data. (Note that SSL_pending() is
1780 * often used as a boolean value, so we'd better not return -1.)
1782 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1783 * we just return INT_MAX.
1785 return pending < INT_MAX ? (int)pending : INT_MAX;
1788 int SSL_has_pending(const SSL *s)
1791 * Similar to SSL_pending() but returns a 1 to indicate that we have
1792 * processed or unprocessed data available or 0 otherwise (as opposed to the
1793 * number of bytes available). Unlike SSL_pending() this will take into
1794 * account read_ahead data. A 1 return simply indicates that we have data.
1795 * That data may not result in any application data, or we may fail to parse
1796 * the records for some reason.
1798 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1800 /* Check buffered app data if any first */
1801 if (SSL_CONNECTION_IS_DTLS(sc)) {
1805 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1806 while ((item = pqueue_next(&iter)) != NULL) {
1808 if (rdata->length > 0)
1813 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1816 return RECORD_LAYER_read_pending(&sc->rlayer);
1819 X509 *SSL_get1_peer_certificate(const SSL *s)
1821 X509 *r = SSL_get0_peer_certificate(s);
1829 X509 *SSL_get0_peer_certificate(const SSL *s)
1831 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1836 if (sc->session == NULL)
1839 return sc->session->peer;
1842 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1845 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1850 if (sc->session == NULL)
1853 r = sc->session->peer_chain;
1856 * If we are a client, cert_chain includes the peer's own certificate; if
1857 * we are a server, it does not.
1864 * Now in theory, since the calling process own 't' it should be safe to
1865 * modify. We need to be able to read f without being hassled
1867 int SSL_copy_session_id(SSL *t, const SSL *f)
1870 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1871 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1872 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1874 if (tsc == NULL || fsc == NULL)
1877 /* Do we need to do SSL locking? */
1878 if (!SSL_set_session(t, SSL_get_session(f))) {
1883 * what if we are setup for one protocol version but want to talk another
1885 if (t->method != f->method) {
1886 t->method->ssl_deinit(t);
1887 t->method = f->method;
1888 if (t->method->ssl_init(t) == 0)
1892 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1893 ssl_cert_free(tsc->cert);
1894 tsc->cert = fsc->cert;
1895 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1902 /* Fix this so it checks all the valid key/cert options */
1903 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1905 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1906 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1909 if (ctx->cert->key->privatekey == NULL) {
1910 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1913 return X509_check_private_key
1914 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1917 /* Fix this function so that it takes an optional type parameter */
1918 int SSL_check_private_key(const SSL *ssl)
1920 const SSL_CONNECTION *sc;
1922 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1923 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1926 if (sc->cert->key->x509 == NULL) {
1927 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1930 if (sc->cert->key->privatekey == NULL) {
1931 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1934 return X509_check_private_key(sc->cert->key->x509,
1935 sc->cert->key->privatekey);
1938 int SSL_waiting_for_async(SSL *s)
1940 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1951 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1953 ASYNC_WAIT_CTX *ctx;
1954 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1959 if ((ctx = sc->waitctx) == NULL)
1961 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1964 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1965 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1967 ASYNC_WAIT_CTX *ctx;
1968 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1973 if ((ctx = sc->waitctx) == NULL)
1975 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1979 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1981 ctx->async_cb = callback;
1985 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1987 ctx->async_cb_arg = arg;
1991 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1993 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1998 sc->async_cb = callback;
2002 int SSL_set_async_callback_arg(SSL *s, void *arg)
2004 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2009 sc->async_cb_arg = arg;
2013 int SSL_get_async_status(SSL *s, int *status)
2015 ASYNC_WAIT_CTX *ctx;
2016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2021 if ((ctx = sc->waitctx) == NULL)
2023 *status = ASYNC_WAIT_CTX_get_status(ctx);
2027 int SSL_accept(SSL *s)
2029 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2034 if (sc->handshake_func == NULL) {
2035 /* Not properly initialized yet */
2036 SSL_set_accept_state(s);
2039 return SSL_do_handshake(s);
2042 int SSL_connect(SSL *s)
2044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2049 if (sc->handshake_func == NULL) {
2050 /* Not properly initialized yet */
2051 SSL_set_connect_state(s);
2054 return SSL_do_handshake(s);
2057 long SSL_get_default_timeout(const SSL *s)
2059 return (long int)ossl_time2seconds(s->method->get_timeout());
2062 static int ssl_async_wait_ctx_cb(void *arg)
2064 SSL *s = (SSL *)arg;
2065 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2070 return sc->async_cb(s, sc->async_cb_arg);
2073 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2074 int (*func) (void *))
2077 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2082 if (sc->waitctx == NULL) {
2083 sc->waitctx = ASYNC_WAIT_CTX_new();
2084 if (sc->waitctx == NULL)
2086 if (sc->async_cb != NULL
2087 && !ASYNC_WAIT_CTX_set_callback
2088 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2092 sc->rwstate = SSL_NOTHING;
2093 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2094 sizeof(struct ssl_async_args))) {
2096 sc->rwstate = SSL_NOTHING;
2097 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2100 sc->rwstate = SSL_ASYNC_PAUSED;
2103 sc->rwstate = SSL_ASYNC_NO_JOBS;
2109 sc->rwstate = SSL_NOTHING;
2110 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2111 /* Shouldn't happen */
2116 static int ssl_io_intern(void *vargs)
2118 struct ssl_async_args *args;
2124 args = (struct ssl_async_args *)vargs;
2128 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2131 switch (args->type) {
2133 return args->f.func_read(s, buf, num, &sc->asyncrw);
2135 return args->f.func_write(s, buf, num, &sc->asyncrw);
2137 return args->f.func_other(s);
2142 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2144 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2149 if (sc->handshake_func == NULL) {
2150 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2154 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2155 sc->rwstate = SSL_NOTHING;
2159 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2160 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2161 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2165 * If we are a client and haven't received the ServerHello etc then we
2168 ossl_statem_check_finish_init(sc, 0);
2170 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2171 struct ssl_async_args args;
2177 args.type = READFUNC;
2178 args.f.func_read = s->method->ssl_read;
2180 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2181 *readbytes = sc->asyncrw;
2184 return s->method->ssl_read(s, buf, num, readbytes);
2188 int SSL_read(SSL *s, void *buf, int num)
2194 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2198 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2201 * The cast is safe here because ret should be <= INT_MAX because num is
2205 ret = (int)readbytes;
2210 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2212 int ret = ssl_read_internal(s, buf, num, readbytes);
2219 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2222 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2224 /* TODO(QUIC): This will need special handling for QUIC */
2229 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2230 return SSL_READ_EARLY_DATA_ERROR;
2233 switch (sc->early_data_state) {
2234 case SSL_EARLY_DATA_NONE:
2235 if (!SSL_in_before(s)) {
2236 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2237 return SSL_READ_EARLY_DATA_ERROR;
2241 case SSL_EARLY_DATA_ACCEPT_RETRY:
2242 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2243 ret = SSL_accept(s);
2246 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2247 return SSL_READ_EARLY_DATA_ERROR;
2251 case SSL_EARLY_DATA_READ_RETRY:
2252 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2253 sc->early_data_state = SSL_EARLY_DATA_READING;
2254 ret = SSL_read_ex(s, buf, num, readbytes);
2256 * State machine will update early_data_state to
2257 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2260 if (ret > 0 || (ret <= 0 && sc->early_data_state
2261 != SSL_EARLY_DATA_FINISHED_READING)) {
2262 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2263 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2264 : SSL_READ_EARLY_DATA_ERROR;
2267 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2270 return SSL_READ_EARLY_DATA_FINISH;
2273 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2274 return SSL_READ_EARLY_DATA_ERROR;
2278 int SSL_get_early_data_status(const SSL *s)
2280 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2282 /* TODO(QUIC): This will need special handling for QUIC */
2286 return sc->ext.early_data;
2289 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2296 if (sc->handshake_func == NULL) {
2297 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2301 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2304 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2305 struct ssl_async_args args;
2311 args.type = READFUNC;
2312 args.f.func_read = s->method->ssl_peek;
2314 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2315 *readbytes = sc->asyncrw;
2318 return s->method->ssl_peek(s, buf, num, readbytes);
2322 int SSL_peek(SSL *s, void *buf, int num)
2328 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2332 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2335 * The cast is safe here because ret should be <= INT_MAX because num is
2339 ret = (int)readbytes;
2345 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2347 int ret = ssl_peek_internal(s, buf, num, readbytes);
2354 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2356 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2361 if (sc->handshake_func == NULL) {
2362 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2366 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2367 sc->rwstate = SSL_NOTHING;
2368 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2372 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2373 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2374 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2375 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2378 /* If we are a client and haven't sent the Finished we better do that */
2379 ossl_statem_check_finish_init(sc, 1);
2381 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2383 struct ssl_async_args args;
2386 args.buf = (void *)buf;
2388 args.type = WRITEFUNC;
2389 args.f.func_write = s->method->ssl_write;
2391 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2392 *written = sc->asyncrw;
2395 return s->method->ssl_write(s, buf, num, written);
2399 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2402 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2407 if (sc->handshake_func == NULL) {
2408 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2412 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2413 sc->rwstate = SSL_NOTHING;
2414 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2418 if (!BIO_get_ktls_send(sc->wbio)) {
2419 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2423 /* If we have an alert to send, lets send it */
2424 if (sc->s3.alert_dispatch) {
2425 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2427 /* SSLfatal() already called if appropriate */
2430 /* if it went, fall through and send more stuff */
2433 sc->rwstate = SSL_WRITING;
2434 if (BIO_flush(sc->wbio) <= 0) {
2435 if (!BIO_should_retry(sc->wbio)) {
2436 sc->rwstate = SSL_NOTHING;
2439 set_sys_error(EAGAIN);
2445 #ifdef OPENSSL_NO_KTLS
2446 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2447 "can't call ktls_sendfile(), ktls disabled");
2450 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2452 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2453 if ((get_last_sys_error() == EAGAIN) ||
2454 (get_last_sys_error() == EINTR) ||
2455 (get_last_sys_error() == EBUSY))
2456 BIO_set_retry_write(sc->wbio);
2459 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2462 sc->rwstate = SSL_NOTHING;
2467 int SSL_write(SSL *s, const void *buf, int num)
2473 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2477 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2480 * The cast is safe here because ret should be <= INT_MAX because num is
2489 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2491 int ret = ssl_write_internal(s, buf, num, written);
2498 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2500 int ret, early_data_state;
2502 uint32_t partialwrite;
2503 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2505 /* TODO(QUIC): This will need special handling for QUIC */
2509 switch (sc->early_data_state) {
2510 case SSL_EARLY_DATA_NONE:
2512 || !SSL_in_before(s)
2513 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2514 && (sc->psk_use_session_cb == NULL))) {
2515 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2520 case SSL_EARLY_DATA_CONNECT_RETRY:
2521 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2522 ret = SSL_connect(s);
2525 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2530 case SSL_EARLY_DATA_WRITE_RETRY:
2531 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2533 * We disable partial write for early data because we don't keep track
2534 * of how many bytes we've written between the SSL_write_ex() call and
2535 * the flush if the flush needs to be retried)
2537 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2538 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2539 ret = SSL_write_ex(s, buf, num, &writtmp);
2540 sc->mode |= partialwrite;
2542 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2545 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2548 case SSL_EARLY_DATA_WRITE_FLUSH:
2549 /* The buffering BIO is still in place so we need to flush it */
2550 if (statem_flush(sc) != 1)
2553 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2556 case SSL_EARLY_DATA_FINISHED_READING:
2557 case SSL_EARLY_DATA_READ_RETRY:
2558 early_data_state = sc->early_data_state;
2559 /* We are a server writing to an unauthenticated client */
2560 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2561 ret = SSL_write_ex(s, buf, num, written);
2562 /* The buffering BIO is still in place */
2564 (void)BIO_flush(sc->wbio);
2565 sc->early_data_state = early_data_state;
2569 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2574 int SSL_shutdown(SSL *s)
2577 * Note that this function behaves differently from what one might
2578 * expect. Return values are 0 for no success (yet), 1 for success; but
2579 * calling it once is usually not enough, even if blocking I/O is used
2580 * (see ssl3_shutdown).
2582 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2587 if (sc->handshake_func == NULL) {
2588 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2592 if (!SSL_in_init(s)) {
2593 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2594 struct ssl_async_args args;
2596 memset(&args, 0, sizeof(args));
2598 args.type = OTHERFUNC;
2599 args.f.func_other = s->method->ssl_shutdown;
2601 return ssl_start_async_job(s, &args, ssl_io_intern);
2603 return s->method->ssl_shutdown(s);
2606 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2611 int SSL_key_update(SSL *s, int updatetype)
2613 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2618 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2619 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2623 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2624 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2625 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2629 if (!SSL_is_init_finished(s)) {
2630 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2634 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2635 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2639 ossl_statem_set_in_init(sc, 1);
2640 sc->key_update = updatetype;
2644 int SSL_get_key_update_type(const SSL *s)
2646 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2651 return sc->key_update;
2655 * Can we accept a renegotiation request? If yes, set the flag and
2656 * return 1 if yes. If not, raise error and return 0.
2658 static int can_renegotiate(const SSL_CONNECTION *sc)
2660 if (SSL_CONNECTION_IS_TLS13(sc)) {
2661 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2665 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2666 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2673 int SSL_renegotiate(SSL *s)
2675 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2680 if (!can_renegotiate(sc))
2683 sc->renegotiate = 1;
2684 sc->new_session = 1;
2685 return s->method->ssl_renegotiate(s);
2688 int SSL_renegotiate_abbreviated(SSL *s)
2690 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2695 if (!can_renegotiate(sc))
2698 sc->renegotiate = 1;
2699 sc->new_session = 0;
2700 return s->method->ssl_renegotiate(s);
2703 int SSL_renegotiate_pending(const SSL *s)
2705 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2711 * becomes true when negotiation is requested; false again once a
2712 * handshake has finished
2714 return (sc->renegotiate != 0);
2717 int SSL_new_session_ticket(SSL *s)
2719 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2724 /* If we are in init because we're sending tickets, okay to send more. */
2725 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2726 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2727 || !SSL_CONNECTION_IS_TLS13(sc))
2729 sc->ext.extra_tickets_expected++;
2730 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2731 ossl_statem_set_in_init(sc, 1);
2735 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2738 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2740 /* TODO(QUIC): Special handling for some ctrls will be needed */
2745 case SSL_CTRL_GET_READ_AHEAD:
2746 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2747 case SSL_CTRL_SET_READ_AHEAD:
2748 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2749 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2752 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2753 sc->msg_callback_arg = parg;
2758 OSSL_PARAM options[2], *opts = options;
2762 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2764 *opts = OSSL_PARAM_construct_end();
2766 /* Ignore return value */
2767 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2771 case SSL_CTRL_CLEAR_MODE:
2772 return (sc->mode &= ~larg);
2773 case SSL_CTRL_GET_MAX_CERT_LIST:
2774 return (long)sc->max_cert_list;
2775 case SSL_CTRL_SET_MAX_CERT_LIST:
2778 l = (long)sc->max_cert_list;
2779 sc->max_cert_list = (size_t)larg;
2781 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2782 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2784 #ifndef OPENSSL_NO_KTLS
2785 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2787 #endif /* OPENSSL_NO_KTLS */
2788 sc->max_send_fragment = larg;
2789 if (sc->max_send_fragment < sc->split_send_fragment)
2790 sc->split_send_fragment = sc->max_send_fragment;
2792 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2793 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2795 sc->split_send_fragment = larg;
2797 case SSL_CTRL_SET_MAX_PIPELINES:
2798 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2800 sc->max_pipelines = larg;
2801 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2802 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2804 case SSL_CTRL_GET_RI_SUPPORT:
2805 return sc->s3.send_connection_binding;
2806 case SSL_CTRL_SET_RETRY_VERIFY:
2807 sc->rwstate = SSL_RETRY_VERIFY;
2809 case SSL_CTRL_CERT_FLAGS:
2810 return (sc->cert->cert_flags |= larg);
2811 case SSL_CTRL_CLEAR_CERT_FLAGS:
2812 return (sc->cert->cert_flags &= ~larg);
2814 case SSL_CTRL_GET_RAW_CIPHERLIST:
2816 if (sc->s3.tmp.ciphers_raw == NULL)
2818 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2819 return (int)sc->s3.tmp.ciphers_rawlen;
2821 return TLS_CIPHER_LEN;
2823 case SSL_CTRL_GET_EXTMS_SUPPORT:
2824 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2826 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2830 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2831 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2832 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2833 &sc->min_proto_version);
2834 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2835 return sc->min_proto_version;
2836 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2837 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2838 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2839 &sc->max_proto_version);
2840 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2841 return sc->max_proto_version;
2843 return s->method->ssl_ctrl(s, cmd, larg, parg);
2847 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2849 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2855 case SSL_CTRL_SET_MSG_CALLBACK:
2856 sc->msg_callback = (void (*)
2857 (int write_p, int version, int content_type,
2858 const void *buf, size_t len, SSL *ssl,
2863 return s->method->ssl_callback_ctrl(s, cmd, fp);
2867 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2869 return ctx->sessions;
2872 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2876 if (ssl_tsan_lock(ctx)) {
2877 res = tsan_load(stat);
2878 ssl_tsan_unlock(ctx);
2883 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2886 /* For some cases with ctx == NULL perform syntax checks */
2889 case SSL_CTRL_SET_GROUPS_LIST:
2890 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2891 case SSL_CTRL_SET_SIGALGS_LIST:
2892 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2893 return tls1_set_sigalgs_list(NULL, parg, 0);
2900 case SSL_CTRL_GET_READ_AHEAD:
2901 return ctx->read_ahead;
2902 case SSL_CTRL_SET_READ_AHEAD:
2903 l = ctx->read_ahead;
2904 ctx->read_ahead = larg;
2907 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2908 ctx->msg_callback_arg = parg;
2911 case SSL_CTRL_GET_MAX_CERT_LIST:
2912 return (long)ctx->max_cert_list;
2913 case SSL_CTRL_SET_MAX_CERT_LIST:
2916 l = (long)ctx->max_cert_list;
2917 ctx->max_cert_list = (size_t)larg;
2920 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2923 l = (long)ctx->session_cache_size;
2924 ctx->session_cache_size = (size_t)larg;
2926 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2927 return (long)ctx->session_cache_size;
2928 case SSL_CTRL_SET_SESS_CACHE_MODE:
2929 l = ctx->session_cache_mode;
2930 ctx->session_cache_mode = larg;
2932 case SSL_CTRL_GET_SESS_CACHE_MODE:
2933 return ctx->session_cache_mode;
2935 case SSL_CTRL_SESS_NUMBER:
2936 return lh_SSL_SESSION_num_items(ctx->sessions);
2937 case SSL_CTRL_SESS_CONNECT:
2938 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2939 case SSL_CTRL_SESS_CONNECT_GOOD:
2940 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2941 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2942 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2943 case SSL_CTRL_SESS_ACCEPT:
2944 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2945 case SSL_CTRL_SESS_ACCEPT_GOOD:
2946 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2947 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2948 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2949 case SSL_CTRL_SESS_HIT:
2950 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2951 case SSL_CTRL_SESS_CB_HIT:
2952 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2953 case SSL_CTRL_SESS_MISSES:
2954 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2955 case SSL_CTRL_SESS_TIMEOUTS:
2956 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2957 case SSL_CTRL_SESS_CACHE_FULL:
2958 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2960 return (ctx->mode |= larg);
2961 case SSL_CTRL_CLEAR_MODE:
2962 return (ctx->mode &= ~larg);
2963 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2964 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2966 ctx->max_send_fragment = larg;
2967 if (ctx->max_send_fragment < ctx->split_send_fragment)
2968 ctx->split_send_fragment = ctx->max_send_fragment;
2970 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2971 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2973 ctx->split_send_fragment = larg;
2975 case SSL_CTRL_SET_MAX_PIPELINES:
2976 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2978 ctx->max_pipelines = larg;
2980 case SSL_CTRL_CERT_FLAGS:
2981 return (ctx->cert->cert_flags |= larg);
2982 case SSL_CTRL_CLEAR_CERT_FLAGS:
2983 return (ctx->cert->cert_flags &= ~larg);
2984 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2985 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2986 && ssl_set_version_bound(ctx->method->version, (int)larg,
2987 &ctx->min_proto_version);
2988 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2989 return ctx->min_proto_version;
2990 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2991 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2992 && ssl_set_version_bound(ctx->method->version, (int)larg,
2993 &ctx->max_proto_version);
2994 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2995 return ctx->max_proto_version;
2997 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3001 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3004 case SSL_CTRL_SET_MSG_CALLBACK:
3005 ctx->msg_callback = (void (*)
3006 (int write_p, int version, int content_type,
3007 const void *buf, size_t len, SSL *ssl,
3012 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3016 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3025 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3026 const SSL_CIPHER *const *bp)
3028 if ((*ap)->id > (*bp)->id)
3030 if ((*ap)->id < (*bp)->id)
3036 * return a STACK of the ciphers available for the SSL and in order of
3039 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3041 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3044 if (sc->cipher_list != NULL) {
3045 return sc->cipher_list;
3046 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3047 return s->ctx->cipher_list;
3053 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3055 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3057 if (sc == NULL || !sc->server)
3059 return sc->peer_ciphers;
3062 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3064 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3066 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3071 ciphers = SSL_get_ciphers(s);
3074 if (!ssl_set_client_disabled(sc))
3076 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3077 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3078 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3080 sk = sk_SSL_CIPHER_new_null();
3083 if (!sk_SSL_CIPHER_push(sk, c)) {
3084 sk_SSL_CIPHER_free(sk);
3092 /** return a STACK of the ciphers available for the SSL and in order of
3094 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3097 if (s->cipher_list_by_id != NULL)
3098 return s->cipher_list_by_id;
3099 else if (s->ssl.ctx != NULL
3100 && s->ssl.ctx->cipher_list_by_id != NULL)
3101 return s->ssl.ctx->cipher_list_by_id;
3106 /** The old interface to get the same thing as SSL_get_ciphers() */
3107 const char *SSL_get_cipher_list(const SSL *s, int n)
3109 const SSL_CIPHER *c;
3110 STACK_OF(SSL_CIPHER) *sk;
3114 sk = SSL_get_ciphers(s);
3115 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3117 c = sk_SSL_CIPHER_value(sk, n);
3123 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3125 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3128 return ctx->cipher_list;
3133 * Distinguish between ciphers controlled by set_ciphersuite() and
3134 * set_cipher_list() when counting.
3136 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3139 const SSL_CIPHER *c;
3143 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3144 c = sk_SSL_CIPHER_value(sk, i);
3145 if (c->min_tls >= TLS1_3_VERSION)
3152 /** specify the ciphers to be used by default by the SSL_CTX */
3153 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3155 STACK_OF(SSL_CIPHER) *sk;
3157 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3158 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3161 * ssl_create_cipher_list may return an empty stack if it was unable to
3162 * find a cipher matching the given rule string (for example if the rule
3163 * string specifies a cipher which has been disabled). This is not an
3164 * error as far as ssl_create_cipher_list is concerned, and hence
3165 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3169 else if (cipher_list_tls12_num(sk) == 0) {
3170 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3176 /** specify the ciphers to be used by the SSL */
3177 int SSL_set_cipher_list(SSL *s, const char *str)
3179 STACK_OF(SSL_CIPHER) *sk;
3180 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3185 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3186 &sc->cipher_list, &sc->cipher_list_by_id, str,
3188 /* see comment in SSL_CTX_set_cipher_list */
3191 else if (cipher_list_tls12_num(sk) == 0) {
3192 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3198 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3201 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3202 const SSL_CIPHER *c;
3204 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3210 || sc->peer_ciphers == NULL
3215 clntsk = sc->peer_ciphers;
3216 srvrsk = SSL_get_ciphers(s);
3217 if (clntsk == NULL || srvrsk == NULL)
3220 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3223 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3226 c = sk_SSL_CIPHER_value(clntsk, i);
3227 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3230 n = strlen(c->name);
3247 * Return the requested servername (SNI) value. Note that the behaviour varies
3249 * - whether this is called by the client or the server,
3250 * - if we are before or during/after the handshake,
3251 * - if a resumption or normal handshake is being attempted/has occurred
3252 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3254 * Note that only the host_name type is defined (RFC 3546).
3256 const char *SSL_get_servername(const SSL *s, const int type)
3258 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3265 * If we don't know if we are the client or the server yet then we assume
3268 server = sc->handshake_func == NULL ? 0 : sc->server;
3270 if (type != TLSEXT_NAMETYPE_host_name)
3276 * In TLSv1.3 on the server SNI is not associated with the session
3277 * but in TLSv1.2 or below it is.
3279 * Before the handshake:
3282 * During/after the handshake (TLSv1.2 or below resumption occurred):
3283 * - If a servername was accepted by the server in the original
3284 * handshake then it will return that servername, or NULL otherwise.
3286 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3287 * - The function will return the servername requested by the client in
3288 * this handshake or NULL if none was requested.
3290 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3291 return sc->session->ext.hostname;
3296 * Before the handshake:
3297 * - If a servername has been set via a call to
3298 * SSL_set_tlsext_host_name() then it will return that servername
3299 * - If one has not been set, but a TLSv1.2 resumption is being
3300 * attempted and the session from the original handshake had a
3301 * servername accepted by the server then it will return that
3303 * - Otherwise it returns NULL
3305 * During/after the handshake (TLSv1.2 or below resumption occurred):
3306 * - If the session from the original handshake had a servername accepted
3307 * by the server then it will return that servername.
3308 * - Otherwise it returns the servername set via
3309 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3311 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3312 * - It will return the servername set via SSL_set_tlsext_host_name()
3313 * (or NULL if it was not called).
3315 if (SSL_in_before(s)) {
3316 if (sc->ext.hostname == NULL
3317 && sc->session != NULL
3318 && sc->session->ssl_version != TLS1_3_VERSION)
3319 return sc->session->ext.hostname;
3321 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3322 && sc->session->ext.hostname != NULL)
3323 return sc->session->ext.hostname;
3327 return sc->ext.hostname;
3330 int SSL_get_servername_type(const SSL *s)
3332 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3333 return TLSEXT_NAMETYPE_host_name;
3338 * SSL_select_next_proto implements the standard protocol selection. It is
3339 * expected that this function is called from the callback set by
3340 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3341 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3342 * not included in the length. A byte string of length 0 is invalid. No byte
3343 * string may be truncated. The current, but experimental algorithm for
3344 * selecting the protocol is: 1) If the server doesn't support NPN then this
3345 * is indicated to the callback. In this case, the client application has to
3346 * abort the connection or have a default application level protocol. 2) If
3347 * the server supports NPN, but advertises an empty list then the client
3348 * selects the first protocol in its list, but indicates via the API that this
3349 * fallback case was enacted. 3) Otherwise, the client finds the first
3350 * protocol in the server's list that it supports and selects this protocol.
3351 * This is because it's assumed that the server has better information about
3352 * which protocol a client should use. 4) If the client doesn't support any
3353 * of the server's advertised protocols, then this is treated the same as
3354 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3355 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3357 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3358 const unsigned char *server,
3359 unsigned int server_len,
3360 const unsigned char *client, unsigned int client_len)
3363 const unsigned char *result;
3364 int status = OPENSSL_NPN_UNSUPPORTED;
3367 * For each protocol in server preference order, see if we support it.
3369 for (i = 0; i < server_len;) {
3370 for (j = 0; j < client_len;) {
3371 if (server[i] == client[j] &&
3372 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3373 /* We found a match */
3374 result = &server[i];
3375 status = OPENSSL_NPN_NEGOTIATED;
3385 /* There's no overlap between our protocols and the server's list. */
3387 status = OPENSSL_NPN_NO_OVERLAP;
3390 *out = (unsigned char *)result + 1;
3391 *outlen = result[0];
3395 #ifndef OPENSSL_NO_NEXTPROTONEG
3397 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3398 * client's requested protocol for this connection and returns 0. If the
3399 * client didn't request any protocol, then *data is set to NULL. Note that
3400 * the client can request any protocol it chooses. The value returned from
3401 * this function need not be a member of the list of supported protocols
3402 * provided by the callback.
3404 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3407 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3410 /* We have no other way to indicate error */
3416 *data = sc->ext.npn;
3417 if (*data == NULL) {
3420 *len = (unsigned int)sc->ext.npn_len;
3425 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3426 * a TLS server needs a list of supported protocols for Next Protocol
3427 * Negotiation. The returned list must be in wire format. The list is
3428 * returned by setting |out| to point to it and |outlen| to its length. This
3429 * memory will not be modified, but one should assume that the SSL* keeps a
3430 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3431 * wishes to advertise. Otherwise, no such extension will be included in the
3434 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3435 SSL_CTX_npn_advertised_cb_func cb,
3438 ctx->ext.npn_advertised_cb = cb;
3439 ctx->ext.npn_advertised_cb_arg = arg;
3443 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3444 * client needs to select a protocol from the server's provided list. |out|
3445 * must be set to point to the selected protocol (which may be within |in|).
3446 * The length of the protocol name must be written into |outlen|. The
3447 * server's advertised protocols are provided in |in| and |inlen|. The
3448 * callback can assume that |in| is syntactically valid. The client must
3449 * select a protocol. It is fatal to the connection if this callback returns
3450 * a value other than SSL_TLSEXT_ERR_OK.
3452 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3453 SSL_CTX_npn_select_cb_func cb,
3456 ctx->ext.npn_select_cb = cb;
3457 ctx->ext.npn_select_cb_arg = arg;
3461 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3465 if (protos_len < 2 || protos == NULL)
3468 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3469 if (protos[idx] == 0)
3472 return idx == protos_len;
3475 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3476 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3477 * length-prefixed strings). Returns 0 on success.
3479 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3480 unsigned int protos_len)
3482 unsigned char *alpn;
3484 if (protos_len == 0 || protos == NULL) {
3485 OPENSSL_free(ctx->ext.alpn);
3486 ctx->ext.alpn = NULL;
3487 ctx->ext.alpn_len = 0;
3490 /* Not valid per RFC */
3491 if (!alpn_value_ok(protos, protos_len))
3494 alpn = OPENSSL_memdup(protos, protos_len);
3496 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3499 OPENSSL_free(ctx->ext.alpn);
3500 ctx->ext.alpn = alpn;
3501 ctx->ext.alpn_len = protos_len;
3507 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3508 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3509 * length-prefixed strings). Returns 0 on success.
3511 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3512 unsigned int protos_len)
3514 unsigned char *alpn;
3515 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3520 if (protos_len == 0 || protos == NULL) {
3521 OPENSSL_free(sc->ext.alpn);
3522 sc->ext.alpn = NULL;
3523 sc->ext.alpn_len = 0;
3526 /* Not valid per RFC */
3527 if (!alpn_value_ok(protos, protos_len))
3530 alpn = OPENSSL_memdup(protos, protos_len);
3532 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3535 OPENSSL_free(sc->ext.alpn);
3536 sc->ext.alpn = alpn;
3537 sc->ext.alpn_len = protos_len;
3543 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3544 * called during ClientHello processing in order to select an ALPN protocol
3545 * from the client's list of offered protocols.
3547 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3548 SSL_CTX_alpn_select_cb_func cb,
3551 ctx->ext.alpn_select_cb = cb;
3552 ctx->ext.alpn_select_cb_arg = arg;
3556 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3557 * On return it sets |*data| to point to |*len| bytes of protocol name
3558 * (not including the leading length-prefix byte). If the server didn't
3559 * respond with a negotiated protocol then |*len| will be zero.
3561 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3564 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3567 /* We have no other way to indicate error */
3573 *data = sc->s3.alpn_selected;
3577 *len = (unsigned int)sc->s3.alpn_selected_len;
3580 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3581 const char *label, size_t llen,
3582 const unsigned char *context, size_t contextlen,
3585 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3590 if (sc->session == NULL
3591 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3594 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3596 contextlen, use_context);
3599 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3600 const char *label, size_t llen,
3601 const unsigned char *context,
3604 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3609 if (sc->version != TLS1_3_VERSION)
3612 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3613 context, contextlen);
3616 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3618 const unsigned char *session_id = a->session_id;
3620 unsigned char tmp_storage[4];
3622 if (a->session_id_length < sizeof(tmp_storage)) {
3623 memset(tmp_storage, 0, sizeof(tmp_storage));
3624 memcpy(tmp_storage, a->session_id, a->session_id_length);
3625 session_id = tmp_storage;
3629 ((unsigned long)session_id[0]) |
3630 ((unsigned long)session_id[1] << 8L) |
3631 ((unsigned long)session_id[2] << 16L) |
3632 ((unsigned long)session_id[3] << 24L);
3637 * NB: If this function (or indeed the hash function which uses a sort of
3638 * coarser function than this one) is changed, ensure
3639 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3640 * being able to construct an SSL_SESSION that will collide with any existing
3641 * session with a matching session ID.
3643 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3645 if (a->ssl_version != b->ssl_version)
3647 if (a->session_id_length != b->session_id_length)
3649 return memcmp(a->session_id, b->session_id, a->session_id_length);
3653 * These wrapper functions should remain rather than redeclaring
3654 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3655 * variable. The reason is that the functions aren't static, they're exposed
3659 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3660 const SSL_METHOD *meth)
3662 SSL_CTX *ret = NULL;
3665 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3669 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3672 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3673 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3676 ret = OPENSSL_zalloc(sizeof(*ret));
3680 /* Init the reference counting before any call to SSL_CTX_free */
3681 ret->references = 1;
3682 ret->lock = CRYPTO_THREAD_lock_new();
3683 if (ret->lock == NULL) {
3684 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3689 #ifdef TSAN_REQUIRES_LOCKING
3690 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3691 if (ret->tsan_lock == NULL) {
3692 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3697 ret->libctx = libctx;
3698 if (propq != NULL) {
3699 ret->propq = OPENSSL_strdup(propq);
3700 if (ret->propq == NULL)
3705 ret->min_proto_version = 0;
3706 ret->max_proto_version = 0;
3707 ret->mode = SSL_MODE_AUTO_RETRY;
3708 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3709 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3710 /* We take the system default. */
3711 ret->session_timeout = meth->get_timeout();
3712 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3713 ret->verify_mode = SSL_VERIFY_NONE;
3714 if ((ret->cert = ssl_cert_new()) == NULL)
3717 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3718 if (ret->sessions == NULL)
3720 ret->cert_store = X509_STORE_new();
3721 if (ret->cert_store == NULL)
3723 #ifndef OPENSSL_NO_CT
3724 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3725 if (ret->ctlog_store == NULL)
3729 /* initialize cipher/digest methods table */
3730 if (!ssl_load_ciphers(ret))
3732 /* initialise sig algs */
3733 if (!ssl_setup_sig_algs(ret))
3737 if (!ssl_load_groups(ret))
3740 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3743 if (!ssl_create_cipher_list(ret,
3744 ret->tls13_ciphersuites,
3745 &ret->cipher_list, &ret->cipher_list_by_id,
3746 OSSL_default_cipher_list(), ret->cert)
3747 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3748 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3752 ret->param = X509_VERIFY_PARAM_new();
3753 if (ret->param == NULL)
3757 * If these aren't available from the provider we'll get NULL returns.
3758 * That's fine but will cause errors later if SSLv3 is negotiated
3760 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3761 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3763 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3766 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3769 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3772 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3775 /* No compression for DTLS */
3776 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3777 ret->comp_methods = SSL_COMP_get_compression_methods();
3779 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3780 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3782 /* Setup RFC5077 ticket keys */
3783 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3784 sizeof(ret->ext.tick_key_name), 0) <= 0)
3785 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3786 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3787 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3788 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3789 ret->options |= SSL_OP_NO_TICKET;
3791 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3792 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3795 #ifndef OPENSSL_NO_SRP
3796 if (!ssl_ctx_srp_ctx_init_intern(ret))
3799 #ifndef OPENSSL_NO_ENGINE
3800 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3801 # define eng_strx(x) #x
3802 # define eng_str(x) eng_strx(x)
3803 /* Use specific client engine automatically... ignore errors */
3806 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3809 ENGINE_load_builtin_engines();
3810 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3812 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3818 * Disable compression by default to prevent CRIME. Applications can
3819 * re-enable compression by configuring
3820 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3821 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3822 * middlebox compatibility by default. This may be disabled by default in
3823 * a later OpenSSL version.
3825 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3827 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3830 * We cannot usefully set a default max_early_data here (which gets
3831 * propagated in SSL_new(), for the following reason: setting the
3832 * SSL field causes tls_construct_stoc_early_data() to tell the
3833 * client that early data will be accepted when constructing a TLS 1.3
3834 * session ticket, and the client will accordingly send us early data
3835 * when using that ticket (if the client has early data to send).
3836 * However, in order for the early data to actually be consumed by
3837 * the application, the application must also have calls to
3838 * SSL_read_early_data(); otherwise we'll just skip past the early data
3839 * and ignore it. So, since the application must add calls to
3840 * SSL_read_early_data(), we also require them to add
3841 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3842 * eliminating the bandwidth-wasting early data in the case described
3845 ret->max_early_data = 0;
3848 * Default recv_max_early_data is a fully loaded single record. Could be
3849 * split across multiple records in practice. We set this differently to
3850 * max_early_data so that, in the default case, we do not advertise any
3851 * support for early_data, but if a client were to send us some (e.g.
3852 * because of an old, stale ticket) then we will tolerate it and skip over
3855 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3857 /* By default we send two session tickets automatically in TLSv1.3 */
3858 ret->num_tickets = 2;
3860 ssl_ctx_system_config(ret);
3864 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3870 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3872 return SSL_CTX_new_ex(NULL, NULL, meth);
3875 int SSL_CTX_up_ref(SSL_CTX *ctx)
3879 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3882 REF_PRINT_COUNT("SSL_CTX", ctx);
3883 REF_ASSERT_ISNT(i < 2);
3884 return ((i > 1) ? 1 : 0);
3887 void SSL_CTX_free(SSL_CTX *a)
3895 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3896 REF_PRINT_COUNT("SSL_CTX", a);
3899 REF_ASSERT_ISNT(i < 0);
3901 X509_VERIFY_PARAM_free(a->param);
3902 dane_ctx_final(&a->dane);
3905 * Free internal session cache. However: the remove_cb() may reference
3906 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3907 * after the sessions were flushed.
3908 * As the ex_data handling routines might also touch the session cache,
3909 * the most secure solution seems to be: empty (flush) the cache, then
3910 * free ex_data, then finally free the cache.
3911 * (See ticket [openssl.org #212].)
3913 if (a->sessions != NULL)
3914 SSL_CTX_flush_sessions(a, 0);
3916 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3917 lh_SSL_SESSION_free(a->sessions);
3918 X509_STORE_free(a->cert_store);
3919 #ifndef OPENSSL_NO_CT
3920 CTLOG_STORE_free(a->ctlog_store);
3922 sk_SSL_CIPHER_free(a->cipher_list);
3923 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3924 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3925 ssl_cert_free(a->cert);
3926 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3927 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3928 OSSL_STACK_OF_X509_free(a->extra_certs);
3929 a->comp_methods = NULL;
3930 #ifndef OPENSSL_NO_SRTP
3931 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3933 #ifndef OPENSSL_NO_SRP
3934 ssl_ctx_srp_ctx_free_intern(a);
3936 #ifndef OPENSSL_NO_ENGINE
3937 tls_engine_finish(a->client_cert_engine);
3940 OPENSSL_free(a->ext.ecpointformats);
3941 OPENSSL_free(a->ext.supportedgroups);
3942 OPENSSL_free(a->ext.supported_groups_default);
3943 OPENSSL_free(a->ext.alpn);
3944 OPENSSL_secure_free(a->ext.secure);
3946 ssl_evp_md_free(a->md5);
3947 ssl_evp_md_free(a->sha1);
3949 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3950 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3951 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3952 ssl_evp_md_free(a->ssl_digest_methods[j]);
3953 for (j = 0; j < a->group_list_len; j++) {
3954 OPENSSL_free(a->group_list[j].tlsname);
3955 OPENSSL_free(a->group_list[j].realname);
3956 OPENSSL_free(a->group_list[j].algorithm);
3958 OPENSSL_free(a->group_list);
3960 OPENSSL_free(a->sigalg_lookup_cache);
3962 CRYPTO_THREAD_lock_free(a->lock);
3963 #ifdef TSAN_REQUIRES_LOCKING
3964 CRYPTO_THREAD_lock_free(a->tsan_lock);
3967 OPENSSL_free(a->propq);
3972 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3974 ctx->default_passwd_callback = cb;
3977 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3979 ctx->default_passwd_callback_userdata = u;
3982 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3984 return ctx->default_passwd_callback;
3987 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3989 return ctx->default_passwd_callback_userdata;
3992 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3994 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3999 sc->default_passwd_callback = cb;
4002 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4004 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4009 sc->default_passwd_callback_userdata = u;
4012 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4014 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4019 return sc->default_passwd_callback;
4022 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4029 return sc->default_passwd_callback_userdata;
4032 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4033 int (*cb) (X509_STORE_CTX *, void *),
4036 ctx->app_verify_callback = cb;
4037 ctx->app_verify_arg = arg;
4040 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4041 int (*cb) (int, X509_STORE_CTX *))
4043 ctx->verify_mode = mode;
4044 ctx->default_verify_callback = cb;
4047 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4049 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4052 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4054 ssl_cert_set_cert_cb(c->cert, cb, arg);
4057 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4064 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4067 void ssl_set_masks(SSL_CONNECTION *s)
4070 uint32_t *pvalid = s->s3.tmp.valid_flags;
4071 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4072 unsigned long mask_k, mask_a;
4073 int have_ecc_cert, ecdsa_ok;
4078 dh_tmp = (c->dh_tmp != NULL
4079 || c->dh_tmp_cb != NULL
4082 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4083 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4084 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4085 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4089 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4090 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4092 #ifndef OPENSSL_NO_GOST
4093 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4094 mask_k |= SSL_kGOST | SSL_kGOST18;
4095 mask_a |= SSL_aGOST12;
4097 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4098 mask_k |= SSL_kGOST | SSL_kGOST18;
4099 mask_a |= SSL_aGOST12;
4101 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4102 mask_k |= SSL_kGOST;
4103 mask_a |= SSL_aGOST01;
4114 * If we only have an RSA-PSS certificate allow RSA authentication
4115 * if TLS 1.2 and peer supports it.
4118 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4119 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4120 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4127 mask_a |= SSL_aNULL;
4130 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4131 * depending on the key usage extension.
4133 if (have_ecc_cert) {
4135 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4136 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4137 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4140 mask_a |= SSL_aECDSA;
4142 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4143 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4144 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4145 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4146 mask_a |= SSL_aECDSA;
4148 /* Allow Ed448 for TLS 1.2 if peer supports it */
4149 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4150 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4151 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4152 mask_a |= SSL_aECDSA;
4154 mask_k |= SSL_kECDHE;
4156 #ifndef OPENSSL_NO_PSK
4159 if (mask_k & SSL_kRSA)
4160 mask_k |= SSL_kRSAPSK;
4161 if (mask_k & SSL_kDHE)
4162 mask_k |= SSL_kDHEPSK;
4163 if (mask_k & SSL_kECDHE)
4164 mask_k |= SSL_kECDHEPSK;
4167 s->s3.tmp.mask_k = mask_k;
4168 s->s3.tmp.mask_a = mask_a;
4171 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4173 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4174 /* key usage, if present, must allow signing */
4175 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4176 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4180 return 1; /* all checks are ok */
4183 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4184 const unsigned char **serverinfo,
4185 size_t *serverinfo_length)
4187 CERT_PKEY *cpk = s->s3.tmp.cert;
4188 *serverinfo_length = 0;
4190 if (cpk == NULL || cpk->serverinfo == NULL)
4193 *serverinfo = cpk->serverinfo;
4194 *serverinfo_length = cpk->serverinfo_length;
4198 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4203 * If the session_id_length is 0, we are not supposed to cache it, and it
4204 * would be rather hard to do anyway :-)
4206 if (s->session->session_id_length == 0)
4210 * If sid_ctx_length is 0 there is no specific application context
4211 * associated with this session, so when we try to resume it and
4212 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4213 * indication that this is actually a session for the proper application
4214 * context, and the *handshake* will fail, not just the resumption attempt.
4215 * Do not cache (on the server) these sessions that are not resumable
4216 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4218 if (s->server && s->session->sid_ctx_length == 0
4219 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4222 i = s->session_ctx->session_cache_mode;
4224 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4226 * Add the session to the internal cache. In server side TLSv1.3 we
4227 * normally don't do this because by default it's a full stateless ticket
4228 * with only a dummy session id so there is no reason to cache it,
4230 * - we are doing early_data, in which case we cache so that we can
4232 * - the application has set a remove_session_cb so needs to know about
4233 * session timeout events
4234 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4236 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4237 && (!SSL_CONNECTION_IS_TLS13(s)
4239 || (s->max_early_data > 0
4240 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4241 || s->session_ctx->remove_session_cb != NULL
4242 || (s->options & SSL_OP_NO_TICKET) != 0))
4243 SSL_CTX_add_session(s->session_ctx, s->session);
4246 * Add the session to the external cache. We do this even in server side
4247 * TLSv1.3 without early data because some applications just want to
4248 * know about the creation of a session and aren't doing a full cache.
4250 if (s->session_ctx->new_session_cb != NULL) {
4251 SSL_SESSION_up_ref(s->session);
4252 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4254 SSL_SESSION_free(s->session);
4258 /* auto flush every 255 connections */
4259 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4260 TSAN_QUALIFIER int *stat;
4262 if (mode & SSL_SESS_CACHE_CLIENT)
4263 stat = &s->session_ctx->stats.sess_connect_good;
4265 stat = &s->session_ctx->stats.sess_accept_good;
4266 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4267 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4271 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4276 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4281 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4284 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4286 /* TODO(QUIC): Do we want this for QUIC? */
4288 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4291 if (s->method != meth) {
4292 const SSL_METHOD *sm = s->method;
4293 int (*hf) (SSL *) = sc->handshake_func;
4295 if (sm->version == meth->version)
4300 ret = s->method->ssl_init(s);
4303 if (hf == sm->ssl_connect)
4304 sc->handshake_func = meth->ssl_connect;
4305 else if (hf == sm->ssl_accept)
4306 sc->handshake_func = meth->ssl_accept;
4311 int SSL_get_error(const SSL *s, int i)
4316 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4319 return SSL_ERROR_NONE;
4321 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4323 return SSL_ERROR_SSL;
4326 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4327 * where we do encode the error
4329 if ((l = ERR_peek_error()) != 0) {
4330 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4331 return SSL_ERROR_SYSCALL;
4333 return SSL_ERROR_SSL;
4336 if (SSL_want_read(s)) {
4337 bio = SSL_get_rbio(s);
4338 if (BIO_should_read(bio))
4339 return SSL_ERROR_WANT_READ;
4340 else if (BIO_should_write(bio))
4342 * This one doesn't make too much sense ... We never try to write
4343 * to the rbio, and an application program where rbio and wbio
4344 * are separate couldn't even know what it should wait for.
4345 * However if we ever set s->rwstate incorrectly (so that we have
4346 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4347 * wbio *are* the same, this test works around that bug; so it
4348 * might be safer to keep it.
4350 return SSL_ERROR_WANT_WRITE;
4351 else if (BIO_should_io_special(bio)) {
4352 reason = BIO_get_retry_reason(bio);
4353 if (reason == BIO_RR_CONNECT)
4354 return SSL_ERROR_WANT_CONNECT;
4355 else if (reason == BIO_RR_ACCEPT)
4356 return SSL_ERROR_WANT_ACCEPT;
4358 return SSL_ERROR_SYSCALL; /* unknown */
4362 if (SSL_want_write(s)) {
4363 /* Access wbio directly - in order to use the buffered bio if present */
4365 if (BIO_should_write(bio))
4366 return SSL_ERROR_WANT_WRITE;
4367 else if (BIO_should_read(bio))
4369 * See above (SSL_want_read(s) with BIO_should_write(bio))
4371 return SSL_ERROR_WANT_READ;
4372 else if (BIO_should_io_special(bio)) {
4373 reason = BIO_get_retry_reason(bio);
4374 if (reason == BIO_RR_CONNECT)
4375 return SSL_ERROR_WANT_CONNECT;
4376 else if (reason == BIO_RR_ACCEPT)
4377 return SSL_ERROR_WANT_ACCEPT;
4379 return SSL_ERROR_SYSCALL;
4382 if (SSL_want_x509_lookup(s))
4383 return SSL_ERROR_WANT_X509_LOOKUP;
4384 if (SSL_want_retry_verify(s))
4385 return SSL_ERROR_WANT_RETRY_VERIFY;
4386 if (SSL_want_async(s))
4387 return SSL_ERROR_WANT_ASYNC;
4388 if (SSL_want_async_job(s))
4389 return SSL_ERROR_WANT_ASYNC_JOB;
4390 if (SSL_want_client_hello_cb(s))
4391 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4393 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4394 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4395 return SSL_ERROR_ZERO_RETURN;
4397 return SSL_ERROR_SYSCALL;
4400 static int ssl_do_handshake_intern(void *vargs)
4402 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4404 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4409 return sc->handshake_func(s);
4412 int SSL_do_handshake(SSL *s)
4415 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4417 /* TODO(QUIC): Special handling for QUIC will be needed */
4421 if (sc->handshake_func == NULL) {
4422 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4426 ossl_statem_check_finish_init(sc, -1);
4428 s->method->ssl_renegotiate_check(s, 0);
4430 if (SSL_in_init(s) || SSL_in_before(s)) {
4431 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4432 struct ssl_async_args args;
4434 memset(&args, 0, sizeof(args));
4437 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4439 ret = sc->handshake_func(s);
4445 void SSL_set_accept_state(SSL *s)
4447 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4449 /* TODO(QUIC): Special handling for QUIC will be needed */
4455 ossl_statem_clear(sc);
4456 sc->handshake_func = s->method->ssl_accept;
4460 void SSL_set_connect_state(SSL *s)
4462 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4464 /* TODO(QUIC): Special handling for QUIC will be needed */
4470 ossl_statem_clear(sc);
4471 sc->handshake_func = s->method->ssl_connect;
4475 int ssl_undefined_function(SSL *s)
4477 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4481 int ssl_undefined_void_function(void)
4483 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4487 int ssl_undefined_const_function(const SSL *s)
4492 const SSL_METHOD *ssl_bad_method(int ver)
4494 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4498 const char *ssl_protocol_to_string(int version)
4502 case TLS1_3_VERSION:
4505 case TLS1_2_VERSION:
4508 case TLS1_1_VERSION:
4523 case DTLS1_2_VERSION:
4531 const char *SSL_get_version(const SSL *s)
4533 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4535 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4539 return ssl_protocol_to_string(sc->version);
4542 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4544 STACK_OF(X509_NAME) *sk;
4553 if ((sk = sk_X509_NAME_new_null()) == NULL)
4555 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4556 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4558 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4561 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4563 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4572 SSL *SSL_dup(SSL *s)
4576 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4577 SSL_CONNECTION *retsc;
4578 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4583 /* If we're not quiescent, just up_ref! */
4584 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4585 CRYPTO_UP_REF(&s->references, &i, s->lock);
4590 * Otherwise, copy configuration state, and session if set.
4592 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4594 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4597 if (sc->session != NULL) {
4599 * Arranges to share the same session via up_ref. This "copies"
4600 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4602 if (!SSL_copy_session_id(ret, s))
4606 * No session has been established yet, so we have to expect that
4607 * s->cert or ret->cert will be changed later -- they should not both
4608 * point to the same object, and thus we can't use
4609 * SSL_copy_session_id.
4611 if (!SSL_set_ssl_method(ret, s->method))
4614 if (sc->cert != NULL) {
4615 ssl_cert_free(retsc->cert);
4616 retsc->cert = ssl_cert_dup(sc->cert);
4617 if (retsc->cert == NULL)
4621 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4622 (int)sc->sid_ctx_length))
4626 if (!ssl_dane_dup(retsc, sc))
4628 retsc->version = sc->version;
4629 retsc->options = sc->options;
4630 retsc->min_proto_version = sc->min_proto_version;
4631 retsc->max_proto_version = sc->max_proto_version;
4632 retsc->mode = sc->mode;
4633 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4634 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4635 retsc->msg_callback = sc->msg_callback;
4636 retsc->msg_callback_arg = sc->msg_callback_arg;
4637 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4638 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4639 retsc->generate_session_id = sc->generate_session_id;
4641 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4643 /* copy app data, a little dangerous perhaps */
4644 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4647 retsc->server = sc->server;
4648 if (sc->handshake_func) {
4650 SSL_set_accept_state(ret);
4652 SSL_set_connect_state(ret);
4654 retsc->shutdown = sc->shutdown;
4655 retsc->hit = sc->hit;
4657 retsc->default_passwd_callback = sc->default_passwd_callback;
4658 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4660 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4662 /* dup the cipher_list and cipher_list_by_id stacks */
4663 if (sc->cipher_list != NULL) {
4664 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4667 if (sc->cipher_list_by_id != NULL)
4668 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4672 /* Dup the client_CA list */
4673 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4674 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4684 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4686 if (s->enc_read_ctx != NULL) {
4687 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4688 s->enc_read_ctx = NULL;
4690 if (s->enc_write_ctx != NULL) {
4691 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4692 s->enc_write_ctx = NULL;
4694 #ifndef OPENSSL_NO_COMP
4695 COMP_CTX_free(s->expand);
4697 COMP_CTX_free(s->compress);
4702 X509 *SSL_get_certificate(const SSL *s)
4704 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4709 if (sc->cert != NULL)
4710 return sc->cert->key->x509;
4715 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4717 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4722 if (sc->cert != NULL)
4723 return sc->cert->key->privatekey;
4728 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4730 if (ctx->cert != NULL)
4731 return ctx->cert->key->x509;
4736 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4738 if (ctx->cert != NULL)
4739 return ctx->cert->key->privatekey;
4744 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4746 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4751 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4752 return sc->session->cipher;
4756 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4758 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4763 return sc->s3.tmp.new_cipher;
4766 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4768 #ifndef OPENSSL_NO_COMP
4769 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4774 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4780 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4782 #ifndef OPENSSL_NO_COMP
4783 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4788 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4794 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4798 if (s->bbio != NULL) {
4799 /* Already buffered. */
4803 bbio = BIO_new(BIO_f_buffer());
4804 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4806 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4810 s->wbio = BIO_push(bbio, s->wbio);
4815 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4817 /* callers ensure s is never null */
4818 if (s->bbio == NULL)
4821 s->wbio = BIO_pop(s->wbio);
4828 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4830 ctx->quiet_shutdown = mode;
4833 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4835 return ctx->quiet_shutdown;
4838 void SSL_set_quiet_shutdown(SSL *s, int mode)
4840 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4842 /* TODO(QUIC): Do we want this for QUIC? */
4846 sc->quiet_shutdown = mode;
4849 int SSL_get_quiet_shutdown(const SSL *s)
4851 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4853 /* TODO(QUIC): Do we want this for QUIC? */
4857 return sc->quiet_shutdown;
4860 void SSL_set_shutdown(SSL *s, int mode)
4862 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4864 /* TODO(QUIC): Do we want this for QUIC? */
4868 sc->shutdown = mode;
4871 int SSL_get_shutdown(const SSL *s)
4873 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4875 /* TODO(QUIC): Do we want this for QUIC? */
4879 return sc->shutdown;
4882 int SSL_version(const SSL *s)
4884 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4886 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4893 int SSL_client_version(const SSL *s)
4895 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4897 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4901 return sc->client_version;
4904 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4909 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4912 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4914 /* TODO(QUIC): Do we need this for QUIC support? */
4918 if (ssl->ctx == ctx)
4921 ctx = sc->session_ctx;
4922 new_cert = ssl_cert_dup(ctx->cert);
4923 if (new_cert == NULL) {
4927 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4928 ssl_cert_free(new_cert);
4932 ssl_cert_free(sc->cert);
4933 sc->cert = new_cert;
4936 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4937 * so setter APIs must prevent invalid lengths from entering the system.
4939 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4943 * If the session ID context matches that of the parent SSL_CTX,
4944 * inherit it from the new SSL_CTX as well. If however the context does
4945 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4946 * leave it unchanged.
4948 if ((ssl->ctx != NULL) &&
4949 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4950 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4951 sc->sid_ctx_length = ctx->sid_ctx_length;
4952 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4955 SSL_CTX_up_ref(ctx);
4956 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4962 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4964 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4968 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4970 X509_LOOKUP *lookup;
4972 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4976 /* We ignore errors, in case the directory doesn't exist */
4979 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4986 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4988 X509_LOOKUP *lookup;
4990 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4994 /* We ignore errors, in case the file doesn't exist */
4997 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5005 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5007 X509_LOOKUP *lookup;
5009 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5013 /* We ignore errors, in case the directory doesn't exist */
5016 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5023 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5025 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5029 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5031 return X509_STORE_load_path(ctx->cert_store, CApath);
5034 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5036 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5040 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5043 if (CAfile == NULL && CApath == NULL)
5045 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5047 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5052 void SSL_set_info_callback(SSL *ssl,
5053 void (*cb) (const SSL *ssl, int type, int val))
5055 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5060 sc->info_callback = cb;
5064 * One compiler (Diab DCC) doesn't like argument names in returned function
5067 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5070 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5075 return sc->info_callback;
5078 void SSL_set_verify_result(SSL *ssl, long arg)
5080 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5085 sc->verify_result = arg;
5088 long SSL_get_verify_result(const SSL *ssl)
5090 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5095 return sc->verify_result;
5098 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5100 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5106 return sizeof(sc->s3.client_random);
5107 if (outlen > sizeof(sc->s3.client_random))
5108 outlen = sizeof(sc->s3.client_random);
5109 memcpy(out, sc->s3.client_random, outlen);
5113 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5115 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5121 return sizeof(sc->s3.server_random);
5122 if (outlen > sizeof(sc->s3.server_random))
5123 outlen = sizeof(sc->s3.server_random);
5124 memcpy(out, sc->s3.server_random, outlen);
5128 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5129 unsigned char *out, size_t outlen)
5132 return session->master_key_length;
5133 if (outlen > session->master_key_length)
5134 outlen = session->master_key_length;
5135 memcpy(out, session->master_key, outlen);
5139 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5142 if (len > sizeof(sess->master_key))
5145 memcpy(sess->master_key, in, len);
5146 sess->master_key_length = len;
5151 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5153 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5156 void *SSL_get_ex_data(const SSL *s, int idx)
5158 return CRYPTO_get_ex_data(&s->ex_data, idx);
5161 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5163 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5166 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5168 return CRYPTO_get_ex_data(&s->ex_data, idx);
5171 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5173 return ctx->cert_store;
5176 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5178 X509_STORE_free(ctx->cert_store);
5179 ctx->cert_store = store;
5182 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5185 X509_STORE_up_ref(store);
5186 SSL_CTX_set_cert_store(ctx, store);
5189 int SSL_want(const SSL *s)
5191 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5199 #ifndef OPENSSL_NO_PSK
5200 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5202 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5203 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5206 OPENSSL_free(ctx->cert->psk_identity_hint);
5207 if (identity_hint != NULL) {
5208 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5209 if (ctx->cert->psk_identity_hint == NULL)
5212 ctx->cert->psk_identity_hint = NULL;
5216 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5218 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5223 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5224 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5227 OPENSSL_free(sc->cert->psk_identity_hint);
5228 if (identity_hint != NULL) {
5229 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5230 if (sc->cert->psk_identity_hint == NULL)
5233 sc->cert->psk_identity_hint = NULL;
5237 const char *SSL_get_psk_identity_hint(const SSL *s)
5239 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5241 if (sc == NULL || sc->session == NULL)
5244 return sc->session->psk_identity_hint;
5247 const char *SSL_get_psk_identity(const SSL *s)
5249 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5251 if (sc == NULL || sc->session == NULL)
5254 return sc->session->psk_identity;
5257 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5264 sc->psk_client_callback = cb;
5267 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5269 ctx->psk_client_callback = cb;
5272 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5274 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5279 sc->psk_server_callback = cb;
5282 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5284 ctx->psk_server_callback = cb;
5288 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5290 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5295 sc->psk_find_session_cb = cb;
5298 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5299 SSL_psk_find_session_cb_func cb)
5301 ctx->psk_find_session_cb = cb;
5304 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5306 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5311 sc->psk_use_session_cb = cb;
5314 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5315 SSL_psk_use_session_cb_func cb)
5317 ctx->psk_use_session_cb = cb;
5320 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5321 void (*cb) (int write_p, int version,
5322 int content_type, const void *buf,
5323 size_t len, SSL *ssl, void *arg))
5325 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5328 void SSL_set_msg_callback(SSL *ssl,
5329 void (*cb) (int write_p, int version,
5330 int content_type, const void *buf,
5331 size_t len, SSL *ssl, void *arg))
5333 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5336 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5337 int (*cb) (SSL *ssl,
5341 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5342 (void (*)(void))cb);
5345 void SSL_set_not_resumable_session_callback(SSL *ssl,
5346 int (*cb) (SSL *ssl,
5347 int is_forward_secure))
5349 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5350 (void (*)(void))cb);
5353 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5354 size_t (*cb) (SSL *ssl, int type,
5355 size_t len, void *arg))
5357 ctx->record_padding_cb = cb;
5360 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5362 ctx->record_padding_arg = arg;
5365 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5367 return ctx->record_padding_arg;
5370 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5372 /* block size of 0 or 1 is basically no padding */
5373 if (block_size == 1)
5374 ctx->block_padding = 0;
5375 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5376 ctx->block_padding = block_size;
5382 int SSL_set_record_padding_callback(SSL *ssl,
5383 size_t (*cb) (SSL *ssl, int type,
5384 size_t len, void *arg))
5387 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5392 b = SSL_get_wbio(ssl);
5393 if (b == NULL || !BIO_get_ktls_send(b)) {
5394 sc->record_padding_cb = cb;
5400 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5402 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5407 sc->record_padding_arg = arg;
5410 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5412 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5417 return sc->record_padding_arg;
5420 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5422 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5427 /* block size of 0 or 1 is basically no padding */
5428 if (block_size == 1)
5429 sc->block_padding = 0;
5430 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5431 sc->block_padding = block_size;
5437 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5439 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5444 sc->num_tickets = num_tickets;
5449 size_t SSL_get_num_tickets(const SSL *s)
5451 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5456 return sc->num_tickets;
5459 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5461 ctx->num_tickets = num_tickets;
5466 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5468 return ctx->num_tickets;
5472 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5473 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5474 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5475 * Returns the newly allocated ctx;
5478 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5480 ssl_clear_hash_ctx(hash);
5481 *hash = EVP_MD_CTX_new();
5482 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5483 EVP_MD_CTX_free(*hash);
5490 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5493 EVP_MD_CTX_free(*hash);
5497 /* Retrieve handshake hashes */
5498 int ssl_handshake_hash(SSL_CONNECTION *s,
5499 unsigned char *out, size_t outlen,
5502 EVP_MD_CTX *ctx = NULL;
5503 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5504 int hashleni = EVP_MD_CTX_get_size(hdgst);
5507 if (hashleni < 0 || (size_t)hashleni > outlen) {
5508 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5512 ctx = EVP_MD_CTX_new();
5514 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5518 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5519 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5520 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5524 *hashlen = hashleni;
5528 EVP_MD_CTX_free(ctx);
5532 int SSL_session_reused(const SSL *s)
5534 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5542 int SSL_is_server(const SSL *s)
5544 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5552 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5553 void SSL_set_debug(SSL *s, int debug)
5555 /* Old function was do-nothing anyway... */
5561 void SSL_set_security_level(SSL *s, int level)
5563 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5568 sc->cert->sec_level = level;
5571 int SSL_get_security_level(const SSL *s)
5573 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5578 return sc->cert->sec_level;
5581 void SSL_set_security_callback(SSL *s,
5582 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5583 int op, int bits, int nid,
5584 void *other, void *ex))
5586 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5591 sc->cert->sec_cb = cb;
5594 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5595 const SSL_CTX *ctx, int op,
5596 int bits, int nid, void *other,
5598 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5603 return sc->cert->sec_cb;
5606 void SSL_set0_security_ex_data(SSL *s, void *ex)
5608 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5613 sc->cert->sec_ex = ex;
5616 void *SSL_get0_security_ex_data(const SSL *s)
5618 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5623 return sc->cert->sec_ex;
5626 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5628 ctx->cert->sec_level = level;
5631 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5633 return ctx->cert->sec_level;
5636 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5637 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5638 int op, int bits, int nid,
5639 void *other, void *ex))
5641 ctx->cert->sec_cb = cb;
5644 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5650 return ctx->cert->sec_cb;
5653 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5655 ctx->cert->sec_ex = ex;
5658 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5660 return ctx->cert->sec_ex;
5663 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5665 return ctx->options;
5668 uint64_t SSL_get_options(const SSL *s)
5670 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5678 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5680 return ctx->options |= op;
5683 uint64_t SSL_set_options(SSL *s, uint64_t op)
5685 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5686 OSSL_PARAM options[2], *opts = options;
5693 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5695 *opts = OSSL_PARAM_construct_end();
5697 /* Ignore return value */
5698 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5703 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5705 return ctx->options &= ~op;
5708 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5710 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5715 return sc->options &= ~op;
5718 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5720 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5725 return sc->verified_chain;
5728 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5730 #ifndef OPENSSL_NO_CT
5733 * Moves SCTs from the |src| stack to the |dst| stack.
5734 * The source of each SCT will be set to |origin|.
5735 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5737 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5739 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5740 sct_source_t origin)
5746 *dst = sk_SCT_new_null();
5748 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5753 while (sk_SCT_num(src) > 0) {
5754 sct = sk_SCT_pop(src);
5755 if (SCT_set_source(sct, origin) != 1)
5758 if (sk_SCT_push(*dst, sct) <= 0)
5766 sk_SCT_push(src, sct); /* Put the SCT back */
5771 * Look for data collected during ServerHello and parse if found.
5772 * Returns the number of SCTs extracted.
5774 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5776 int scts_extracted = 0;
5778 if (s->ext.scts != NULL) {
5779 const unsigned char *p = s->ext.scts;
5780 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5782 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5784 SCT_LIST_free(scts);
5787 return scts_extracted;
5791 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5792 * contains an SCT X509 extension. They will be stored in |s->scts|.
5794 * - The number of SCTs extracted, assuming an OCSP response exists.
5795 * - 0 if no OCSP response exists or it contains no SCTs.
5796 * - A negative integer if an error occurs.
5798 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5800 # ifndef OPENSSL_NO_OCSP
5801 int scts_extracted = 0;
5802 const unsigned char *p;
5803 OCSP_BASICRESP *br = NULL;
5804 OCSP_RESPONSE *rsp = NULL;
5805 STACK_OF(SCT) *scts = NULL;
5808 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5811 p = s->ext.ocsp.resp;
5812 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5816 br = OCSP_response_get1_basic(rsp);
5820 for (i = 0; i < OCSP_resp_count(br); ++i) {
5821 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5827 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5829 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5830 if (scts_extracted < 0)
5834 SCT_LIST_free(scts);
5835 OCSP_BASICRESP_free(br);
5836 OCSP_RESPONSE_free(rsp);
5837 return scts_extracted;
5839 /* Behave as if no OCSP response exists */
5845 * Attempts to extract SCTs from the peer certificate.
5846 * Return the number of SCTs extracted, or a negative integer if an error
5849 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5851 int scts_extracted = 0;
5852 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5855 STACK_OF(SCT) *scts =
5856 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5859 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5861 SCT_LIST_free(scts);
5864 return scts_extracted;
5868 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5869 * response (if it exists) and X509v3 extensions in the certificate.
5870 * Returns NULL if an error occurs.
5872 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5874 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5879 if (!sc->scts_parsed) {
5880 if (ct_extract_tls_extension_scts(sc) < 0 ||
5881 ct_extract_ocsp_response_scts(sc) < 0 ||
5882 ct_extract_x509v3_extension_scts(sc) < 0)
5885 sc->scts_parsed = 1;
5892 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5893 const STACK_OF(SCT) *scts, void *unused_arg)
5898 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5899 const STACK_OF(SCT) *scts, void *unused_arg)
5901 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5904 for (i = 0; i < count; ++i) {
5905 SCT *sct = sk_SCT_value(scts, i);
5906 int status = SCT_get_validation_status(sct);
5908 if (status == SCT_VALIDATION_STATUS_VALID)
5911 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5915 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5918 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5924 * Since code exists that uses the custom extension handler for CT, look
5925 * for this and throw an error if they have already registered to use CT.
5927 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5928 TLSEXT_TYPE_signed_certificate_timestamp))
5930 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5934 if (callback != NULL) {
5936 * If we are validating CT, then we MUST accept SCTs served via OCSP
5938 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5942 sc->ct_validation_callback = callback;
5943 sc->ct_validation_callback_arg = arg;
5948 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5949 ssl_ct_validation_cb callback, void *arg)
5952 * Since code exists that uses the custom extension handler for CT, look for
5953 * this and throw an error if they have already registered to use CT.
5955 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5956 TLSEXT_TYPE_signed_certificate_timestamp))
5958 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5962 ctx->ct_validation_callback = callback;
5963 ctx->ct_validation_callback_arg = arg;
5967 int SSL_ct_is_enabled(const SSL *s)
5969 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5974 return sc->ct_validation_callback != NULL;
5977 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5979 return ctx->ct_validation_callback != NULL;
5982 int ssl_validate_ct(SSL_CONNECTION *s)
5985 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5987 SSL_DANE *dane = &s->dane;
5988 CT_POLICY_EVAL_CTX *ctx = NULL;
5989 const STACK_OF(SCT) *scts;
5992 * If no callback is set, the peer is anonymous, or its chain is invalid,
5993 * skip SCT validation - just return success. Applications that continue
5994 * handshakes without certificates, with unverified chains, or pinned leaf
5995 * certificates are outside the scope of the WebPKI and CT.
5997 * The above exclusions notwithstanding the vast majority of peers will
5998 * have rather ordinary certificate chains validated by typical
5999 * applications that perform certificate verification and therefore will
6000 * process SCTs when enabled.
6002 if (s->ct_validation_callback == NULL || cert == NULL ||
6003 s->verify_result != X509_V_OK ||
6004 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6008 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6009 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6011 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6012 switch (dane->mtlsa->usage) {
6013 case DANETLS_USAGE_DANE_TA:
6014 case DANETLS_USAGE_DANE_EE:
6019 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6020 SSL_CONNECTION_GET_CTX(s)->propq);
6022 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6026 issuer = sk_X509_value(s->verified_chain, 1);
6027 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6028 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6029 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6030 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6031 CT_POLICY_EVAL_CTX_set_time(
6032 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6034 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6037 * This function returns success (> 0) only when all the SCTs are valid, 0
6038 * when some are invalid, and < 0 on various internal errors (out of
6039 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6040 * reason to abort the handshake, that decision is up to the callback.
6041 * Therefore, we error out only in the unexpected case that the return
6042 * value is negative.
6044 * XXX: One might well argue that the return value of this function is an
6045 * unfortunate design choice. Its job is only to determine the validation
6046 * status of each of the provided SCTs. So long as it correctly separates
6047 * the wheat from the chaff it should return success. Failure in this case
6048 * ought to correspond to an inability to carry out its duties.
6050 if (SCT_LIST_validate(scts, ctx) < 0) {
6051 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6055 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6057 ret = 0; /* This function returns 0 on failure */
6059 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6062 CT_POLICY_EVAL_CTX_free(ctx);
6064 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6065 * failure return code here. Also the application may wish the complete
6066 * the handshake, and then disconnect cleanly at a higher layer, after
6067 * checking the verification status of the completed connection.
6069 * We therefore force a certificate verification failure which will be
6070 * visible via SSL_get_verify_result() and cached as part of any resumed
6073 * Note: the permissive callback is for information gathering only, always
6074 * returns success, and does not affect verification status. Only the
6075 * strict callback or a custom application-specified callback can trigger
6076 * connection failure or record a verification error.
6079 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6083 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6085 switch (validation_mode) {
6087 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6089 case SSL_CT_VALIDATION_PERMISSIVE:
6090 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6091 case SSL_CT_VALIDATION_STRICT:
6092 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6096 int SSL_enable_ct(SSL *s, int validation_mode)
6098 switch (validation_mode) {
6100 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6102 case SSL_CT_VALIDATION_PERMISSIVE:
6103 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6104 case SSL_CT_VALIDATION_STRICT:
6105 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6109 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6111 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6114 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6116 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6119 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6121 CTLOG_STORE_free(ctx->ctlog_store);
6122 ctx->ctlog_store = logs;
6125 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6127 return ctx->ctlog_store;
6130 #endif /* OPENSSL_NO_CT */
6132 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6135 c->client_hello_cb = cb;
6136 c->client_hello_cb_arg = arg;
6139 int SSL_client_hello_isv2(SSL *s)
6141 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6146 if (sc->clienthello == NULL)
6148 return sc->clienthello->isv2;
6151 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6153 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6158 if (sc->clienthello == NULL)
6160 return sc->clienthello->legacy_version;
6163 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6165 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6170 if (sc->clienthello == NULL)
6173 *out = sc->clienthello->random;
6174 return SSL3_RANDOM_SIZE;
6177 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6179 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6184 if (sc->clienthello == NULL)
6187 *out = sc->clienthello->session_id;
6188 return sc->clienthello->session_id_len;
6191 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6193 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6198 if (sc->clienthello == NULL)
6201 *out = PACKET_data(&sc->clienthello->ciphersuites);
6202 return PACKET_remaining(&sc->clienthello->ciphersuites);
6205 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6207 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6212 if (sc->clienthello == NULL)
6215 *out = sc->clienthello->compressions;
6216 return sc->clienthello->compressions_len;
6219 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6224 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6229 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6231 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6232 ext = sc->clienthello->pre_proc_exts + i;
6241 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6242 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6245 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6246 ext = sc->clienthello->pre_proc_exts + i;
6248 if (ext->received_order >= num)
6250 present[ext->received_order] = ext->type;
6257 OPENSSL_free(present);
6261 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6265 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6270 if (sc->clienthello == NULL || num_exts == NULL)
6272 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6273 ext = sc->clienthello->pre_proc_exts + i;
6285 if (*num_exts < num)
6287 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6288 ext = sc->clienthello->pre_proc_exts + i;
6290 if (ext->received_order >= num)
6292 exts[ext->received_order] = ext->type;
6299 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6304 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6309 if (sc->clienthello == NULL)
6311 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6312 r = sc->clienthello->pre_proc_exts + i;
6313 if (r->present && r->type == type) {
6315 *out = PACKET_data(&r->data);
6317 *outlen = PACKET_remaining(&r->data);
6324 int SSL_free_buffers(SSL *ssl)
6327 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6334 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6337 RECORD_LAYER_release(rl);
6341 int SSL_alloc_buffers(SSL *ssl)
6343 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6348 return ssl3_setup_buffers(sc);
6351 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6353 ctx->keylog_callback = cb;
6356 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6358 return ctx->keylog_callback;
6361 static int nss_keylog_int(const char *prefix,
6363 const uint8_t *parameter_1,
6364 size_t parameter_1_len,
6365 const uint8_t *parameter_2,
6366 size_t parameter_2_len)
6369 char *cursor = NULL;
6373 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6375 if (sctx->keylog_callback == NULL)
6379 * Our output buffer will contain the following strings, rendered with
6380 * space characters in between, terminated by a NULL character: first the
6381 * prefix, then the first parameter, then the second parameter. The
6382 * meaning of each parameter depends on the specific key material being
6383 * logged. Note that the first and second parameters are encoded in
6384 * hexadecimal, so we need a buffer that is twice their lengths.
6386 prefix_len = strlen(prefix);
6387 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6388 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6389 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6393 strcpy(cursor, prefix);
6394 cursor += prefix_len;
6397 for (i = 0; i < parameter_1_len; i++) {
6398 sprintf(cursor, "%02x", parameter_1[i]);
6403 for (i = 0; i < parameter_2_len; i++) {
6404 sprintf(cursor, "%02x", parameter_2[i]);
6409 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6410 OPENSSL_clear_free(out, out_len);
6415 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6416 const uint8_t *encrypted_premaster,
6417 size_t encrypted_premaster_len,
6418 const uint8_t *premaster,
6419 size_t premaster_len)
6421 if (encrypted_premaster_len < 8) {
6422 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6426 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6427 return nss_keylog_int("RSA",
6429 encrypted_premaster,
6435 int ssl_log_secret(SSL_CONNECTION *sc,
6437 const uint8_t *secret,
6440 return nss_keylog_int(label,
6442 sc->s3.client_random,
6448 #define SSLV2_CIPHER_LEN 3
6450 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6454 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6456 if (PACKET_remaining(cipher_suites) == 0) {
6457 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6461 if (PACKET_remaining(cipher_suites) % n != 0) {
6462 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6466 OPENSSL_free(s->s3.tmp.ciphers_raw);
6467 s->s3.tmp.ciphers_raw = NULL;
6468 s->s3.tmp.ciphers_rawlen = 0;
6471 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6472 PACKET sslv2ciphers = *cipher_suites;
6473 unsigned int leadbyte;
6477 * We store the raw ciphers list in SSLv3+ format so we need to do some
6478 * preprocessing to convert the list first. If there are any SSLv2 only
6479 * ciphersuites with a non-zero leading byte then we are going to
6480 * slightly over allocate because we won't store those. But that isn't a
6483 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6484 s->s3.tmp.ciphers_raw = raw;
6486 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6489 for (s->s3.tmp.ciphers_rawlen = 0;
6490 PACKET_remaining(&sslv2ciphers) > 0;
6491 raw += TLS_CIPHER_LEN) {
6492 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6494 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6497 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6498 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6499 OPENSSL_free(s->s3.tmp.ciphers_raw);
6500 s->s3.tmp.ciphers_raw = NULL;
6501 s->s3.tmp.ciphers_rawlen = 0;
6505 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6507 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6508 &s->s3.tmp.ciphers_rawlen)) {
6509 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6515 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6516 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6517 STACK_OF(SSL_CIPHER) **scsvs)
6520 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6525 if (!PACKET_buf_init(&pkt, bytes, len))
6527 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6530 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6531 STACK_OF(SSL_CIPHER) **skp,
6532 STACK_OF(SSL_CIPHER) **scsvs_out,
6533 int sslv2format, int fatal)
6535 const SSL_CIPHER *c;
6536 STACK_OF(SSL_CIPHER) *sk = NULL;
6537 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6539 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6540 unsigned char cipher[SSLV2_CIPHER_LEN];
6542 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6544 if (PACKET_remaining(cipher_suites) == 0) {
6546 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6548 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6552 if (PACKET_remaining(cipher_suites) % n != 0) {
6554 SSLfatal(s, SSL_AD_DECODE_ERROR,
6555 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6557 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6561 sk = sk_SSL_CIPHER_new_null();
6562 scsvs = sk_SSL_CIPHER_new_null();
6563 if (sk == NULL || scsvs == NULL) {
6565 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6567 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6571 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6573 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6574 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6575 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6577 if (sslv2format && cipher[0] != '\0')
6580 /* For SSLv2-compat, ignore leading 0-byte. */
6581 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6583 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6584 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6586 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6588 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6593 if (PACKET_remaining(cipher_suites) > 0) {
6595 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6597 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6604 sk_SSL_CIPHER_free(sk);
6605 if (scsvs_out != NULL)
6608 sk_SSL_CIPHER_free(scsvs);
6611 sk_SSL_CIPHER_free(sk);
6612 sk_SSL_CIPHER_free(scsvs);
6616 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6618 ctx->max_early_data = max_early_data;
6623 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6625 return ctx->max_early_data;
6628 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6630 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6635 sc->max_early_data = max_early_data;
6640 uint32_t SSL_get_max_early_data(const SSL *s)
6642 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6647 return sc->max_early_data;
6650 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6652 ctx->recv_max_early_data = recv_max_early_data;
6657 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6659 return ctx->recv_max_early_data;
6662 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6664 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6669 sc->recv_max_early_data = recv_max_early_data;
6674 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6681 return sc->recv_max_early_data;
6684 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6686 /* Return any active Max Fragment Len extension */
6687 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6688 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6690 /* return current SSL connection setting */
6691 return sc->max_send_fragment;
6694 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6696 /* Return a value regarding an active Max Fragment Len extension */
6697 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6698 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6699 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6701 /* else limit |split_send_fragment| to current |max_send_fragment| */
6702 if (sc->split_send_fragment > sc->max_send_fragment)
6703 return sc->max_send_fragment;
6705 /* return current SSL connection setting */
6706 return sc->split_send_fragment;
6709 int SSL_stateless(SSL *s)
6712 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6714 /* TODO(QUIC): This will need further work. */
6718 /* Ensure there is no state left over from a previous invocation */
6724 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6725 ret = SSL_accept(s);
6726 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6728 if (ret > 0 && sc->ext.cookieok)
6731 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6737 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6739 ctx->pha_enabled = val;
6742 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6744 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6749 sc->pha_enabled = val;
6752 int SSL_verify_client_post_handshake(SSL *ssl)
6754 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6759 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6760 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6764 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6768 if (!SSL_is_init_finished(ssl)) {
6769 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6773 switch (sc->post_handshake_auth) {
6775 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6778 case SSL_PHA_EXT_SENT:
6779 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6781 case SSL_PHA_EXT_RECEIVED:
6783 case SSL_PHA_REQUEST_PENDING:
6784 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6786 case SSL_PHA_REQUESTED:
6787 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6791 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6793 /* checks verify_mode and algorithm_auth */
6794 if (!send_certificate_request(sc)) {
6795 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6796 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6800 ossl_statem_set_in_init(sc, 1);
6804 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6805 SSL_CTX_generate_session_ticket_fn gen_cb,
6806 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6809 ctx->generate_ticket_cb = gen_cb;
6810 ctx->decrypt_ticket_cb = dec_cb;
6811 ctx->ticket_cb_data = arg;
6815 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6816 SSL_allow_early_data_cb_fn cb,
6819 ctx->allow_early_data_cb = cb;
6820 ctx->allow_early_data_cb_data = arg;
6823 void SSL_set_allow_early_data_cb(SSL *s,
6824 SSL_allow_early_data_cb_fn cb,
6827 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6832 sc->allow_early_data_cb = cb;
6833 sc->allow_early_data_cb_data = arg;
6836 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6838 const char *properties)
6840 const EVP_CIPHER *ciph;
6842 ciph = tls_get_cipher_from_engine(nid);
6847 * If there is no engine cipher then we do an explicit fetch. This may fail
6848 * and that could be ok
6851 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6857 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6859 /* Don't up-ref an implicit EVP_CIPHER */
6860 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6864 * The cipher was explicitly fetched and therefore it is safe to cast
6867 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6870 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6875 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6877 * The cipher was explicitly fetched and therefore it is safe to cast
6880 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6884 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6886 const char *properties)
6890 md = tls_get_digest_from_engine(nid);
6894 /* Otherwise we do an explicit fetch */
6896 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6901 int ssl_evp_md_up_ref(const EVP_MD *md)
6903 /* Don't up-ref an implicit EVP_MD */
6904 if (EVP_MD_get0_provider(md) == NULL)
6908 * The digest was explicitly fetched and therefore it is safe to cast
6911 return EVP_MD_up_ref((EVP_MD *)md);
6914 void ssl_evp_md_free(const EVP_MD *md)
6919 if (EVP_MD_get0_provider(md) != NULL) {
6921 * The digest was explicitly fetched and therefore it is safe to cast
6924 EVP_MD_free((EVP_MD *)md);
6928 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6930 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6935 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6936 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6937 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6940 EVP_PKEY_free(sc->cert->dh_tmp);
6941 sc->cert->dh_tmp = dhpkey;
6945 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6947 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6948 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6949 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6952 EVP_PKEY_free(ctx->cert->dh_tmp);
6953 ctx->cert->dh_tmp = dhpkey;