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 */
676 #ifndef OPENSSL_NO_DEPRECATED_3_0
677 /** Used to change an SSL_CTXs default SSL method type */
678 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
680 STACK_OF(SSL_CIPHER) *sk;
684 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
685 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
688 sk = ssl_create_cipher_list(ctx,
689 ctx->tls13_ciphersuites,
691 &(ctx->cipher_list_by_id),
692 OSSL_default_cipher_list(), ctx->cert);
693 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
694 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
701 SSL *SSL_new(SSL_CTX *ctx)
704 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
707 if (ctx->method == NULL) {
708 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
711 return ctx->method->ssl_new(ctx);
714 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
719 ssl->lock = CRYPTO_THREAD_lock_new();
720 if (ssl->lock == NULL)
726 ssl->method = ctx->method;
728 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
734 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
739 s = OPENSSL_zalloc(sizeof(*s));
744 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
750 #ifndef OPENSSL_NO_QUIC
751 /* set the parent (user visible) ssl to self */
755 RECORD_LAYER_init(&s->rlayer, s);
757 s->options = ctx->options;
758 s->dane.flags = ctx->dane.flags;
759 s->min_proto_version = ctx->min_proto_version;
760 s->max_proto_version = ctx->max_proto_version;
762 s->max_cert_list = ctx->max_cert_list;
763 s->max_early_data = ctx->max_early_data;
764 s->recv_max_early_data = ctx->recv_max_early_data;
765 s->num_tickets = ctx->num_tickets;
766 s->pha_enabled = ctx->pha_enabled;
768 /* Shallow copy of the ciphersuites stack */
769 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
770 if (s->tls13_ciphersuites == NULL)
774 * Earlier library versions used to copy the pointer to the CERT, not
775 * its contents; only when setting new parameters for the per-SSL
776 * copy, ssl_cert_new would be called (and the direct reference to
777 * the per-SSL_CTX settings would be lost, but those still were
778 * indirectly accessed for various purposes, and for that reason they
779 * used to be known as s->ctx->default_cert). Now we don't look at the
780 * SSL_CTX's CERT after having duplicated it once.
782 s->cert = ssl_cert_dup(ctx->cert);
786 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
787 s->msg_callback = ctx->msg_callback;
788 s->msg_callback_arg = ctx->msg_callback_arg;
789 s->verify_mode = ctx->verify_mode;
790 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
791 s->record_padding_cb = ctx->record_padding_cb;
792 s->record_padding_arg = ctx->record_padding_arg;
793 s->block_padding = ctx->block_padding;
794 s->sid_ctx_length = ctx->sid_ctx_length;
795 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
797 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
798 s->verify_callback = ctx->default_verify_callback;
799 s->generate_session_id = ctx->generate_session_id;
801 s->param = X509_VERIFY_PARAM_new();
802 if (s->param == NULL)
804 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
805 s->quiet_shutdown = ctx->quiet_shutdown;
807 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
808 s->max_send_fragment = ctx->max_send_fragment;
809 s->split_send_fragment = ctx->split_send_fragment;
810 s->max_pipelines = ctx->max_pipelines;
811 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
814 s->ext.debug_arg = NULL;
815 s->ext.ticket_expected = 0;
816 s->ext.status_type = ctx->ext.status_type;
817 s->ext.status_expected = 0;
818 s->ext.ocsp.ids = NULL;
819 s->ext.ocsp.exts = NULL;
820 s->ext.ocsp.resp = NULL;
821 s->ext.ocsp.resp_len = 0;
823 s->session_ctx = ctx;
824 if (ctx->ext.ecpointformats) {
825 s->ext.ecpointformats =
826 OPENSSL_memdup(ctx->ext.ecpointformats,
827 ctx->ext.ecpointformats_len);
828 if (!s->ext.ecpointformats) {
829 s->ext.ecpointformats_len = 0;
832 s->ext.ecpointformats_len =
833 ctx->ext.ecpointformats_len;
835 if (ctx->ext.supportedgroups) {
836 s->ext.supportedgroups =
837 OPENSSL_memdup(ctx->ext.supportedgroups,
838 ctx->ext.supportedgroups_len
839 * sizeof(*ctx->ext.supportedgroups));
840 if (!s->ext.supportedgroups) {
841 s->ext.supportedgroups_len = 0;
844 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
847 #ifndef OPENSSL_NO_NEXTPROTONEG
851 if (ctx->ext.alpn != NULL) {
852 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
853 if (s->ext.alpn == NULL) {
857 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
858 s->ext.alpn_len = ctx->ext.alpn_len;
861 s->verified_chain = NULL;
862 s->verify_result = X509_V_OK;
864 s->default_passwd_callback = ctx->default_passwd_callback;
865 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
867 s->key_update = SSL_KEY_UPDATE_NONE;
869 s->allow_early_data_cb = ctx->allow_early_data_cb;
870 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
872 if (!ssl->method->ssl_init(ssl))
875 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
880 #ifndef OPENSSL_NO_PSK
881 s->psk_client_callback = ctx->psk_client_callback;
882 s->psk_server_callback = ctx->psk_server_callback;
884 s->psk_find_session_cb = ctx->psk_find_session_cb;
885 s->psk_use_session_cb = ctx->psk_use_session_cb;
887 s->async_cb = ctx->async_cb;
888 s->async_cb_arg = ctx->async_cb_arg;
892 #ifndef OPENSSL_NO_CT
893 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
894 ctx->ct_validation_callback_arg))
901 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
905 int SSL_is_dtls(const SSL *s)
907 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
912 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
915 int SSL_up_ref(SSL *s)
919 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
922 REF_PRINT_COUNT("SSL", s);
923 REF_ASSERT_ISNT(i < 2);
924 return ((i > 1) ? 1 : 0);
927 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
928 unsigned int sid_ctx_len)
930 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
931 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
934 ctx->sid_ctx_length = sid_ctx_len;
935 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
940 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
941 unsigned int sid_ctx_len)
943 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
948 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
949 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
952 sc->sid_ctx_length = sid_ctx_len;
953 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
958 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
960 if (!CRYPTO_THREAD_write_lock(ctx->lock))
962 ctx->generate_session_id = cb;
963 CRYPTO_THREAD_unlock(ctx->lock);
967 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
969 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
971 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
973 sc->generate_session_id = cb;
974 CRYPTO_THREAD_unlock(ssl->lock);
978 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
982 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
983 * we can "construct" a session to give us the desired check - i.e. to
984 * find if there's a session in the hash table that would conflict with
985 * any new session built out of this id/id_len and the ssl_version in use
989 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
991 if (sc == NULL || id_len > sizeof(r.session_id))
994 r.ssl_version = sc->version;
995 r.session_id_length = id_len;
996 memcpy(r.session_id, id, id_len);
998 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1000 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1001 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1005 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1007 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1010 int SSL_set_purpose(SSL *s, int purpose)
1012 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1017 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1020 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1022 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1025 int SSL_set_trust(SSL *s, int trust)
1027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1032 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1035 int SSL_set1_host(SSL *s, const char *hostname)
1037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1042 /* If a hostname is provided and parses as an IP address,
1043 * treat it as such. */
1044 if (hostname != NULL
1045 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1048 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1051 int SSL_add1_host(SSL *s, const char *hostname)
1053 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1058 /* If a hostname is provided and parses as an IP address,
1059 * treat it as such. */
1062 ASN1_OCTET_STRING *ip;
1065 ip = a2i_IPADDRESS(hostname);
1067 /* We didn't want it; only to check if it *is* an IP address */
1068 ASN1_OCTET_STRING_free(ip);
1070 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1073 OPENSSL_free(old_ip);
1074 /* There can be only one IP address */
1078 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1082 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1085 void SSL_set_hostflags(SSL *s, unsigned int flags)
1087 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1092 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1095 const char *SSL_get0_peername(SSL *s)
1097 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1102 return X509_VERIFY_PARAM_get0_peername(sc->param);
1105 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1107 return dane_ctx_enable(&ctx->dane);
1110 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1112 unsigned long orig = ctx->dane.flags;
1114 ctx->dane.flags |= flags;
1118 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1120 unsigned long orig = ctx->dane.flags;
1122 ctx->dane.flags &= ~flags;
1126 int SSL_dane_enable(SSL *s, const char *basedomain)
1129 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1135 if (s->ctx->dane.mdmax == 0) {
1136 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1139 if (dane->trecs != NULL) {
1140 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1145 * Default SNI name. This rejects empty names, while set1_host below
1146 * accepts them and disables host name checks. To avoid side-effects with
1147 * invalid input, set the SNI name first.
1149 if (sc->ext.hostname == NULL) {
1150 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1151 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1156 /* Primary RFC6125 reference identifier */
1157 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1158 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1164 dane->dctx = &s->ctx->dane;
1165 dane->trecs = sk_danetls_record_new_null();
1167 if (dane->trecs == NULL) {
1168 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1174 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1177 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1182 orig = sc->dane.flags;
1184 sc->dane.flags |= flags;
1188 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1191 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1196 orig = sc->dane.flags;
1198 sc->dane.flags &= ~flags;
1202 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1205 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1212 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1216 *mcert = dane->mcert;
1218 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1223 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1224 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1227 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1234 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1238 *usage = dane->mtlsa->usage;
1240 *selector = dane->mtlsa->selector;
1242 *mtype = dane->mtlsa->mtype;
1244 *data = dane->mtlsa->data;
1246 *dlen = dane->mtlsa->dlen;
1251 SSL_DANE *SSL_get0_dane(SSL *s)
1253 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1261 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1262 uint8_t mtype, const unsigned char *data, size_t dlen)
1264 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1269 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1272 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1275 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1278 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1280 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1283 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1285 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1290 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1293 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1298 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1300 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1308 void SSL_certs_clear(SSL *s)
1310 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1315 ssl_cert_clear_certs(sc->cert);
1318 void SSL_free(SSL *s)
1324 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1325 REF_PRINT_COUNT("SSL", s);
1328 REF_ASSERT_ISNT(i < 0);
1330 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1332 if (s->method != NULL)
1333 s->method->ssl_free(s);
1335 SSL_CTX_free(s->ctx);
1336 CRYPTO_THREAD_lock_free(s->lock);
1341 void ossl_ssl_connection_free(SSL *ssl)
1345 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1349 X509_VERIFY_PARAM_free(s->param);
1350 dane_final(&s->dane);
1352 RECORD_LAYER_clear(&s->rlayer);
1354 /* Ignore return value */
1355 ssl_free_wbio_buffer(s);
1357 BIO_free_all(s->wbio);
1359 BIO_free_all(s->rbio);
1362 BUF_MEM_free(s->init_buf);
1364 /* add extra stuff */
1365 sk_SSL_CIPHER_free(s->cipher_list);
1366 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1367 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1368 sk_SSL_CIPHER_free(s->peer_ciphers);
1370 /* Make the next call work :-) */
1371 if (s->session != NULL) {
1372 ssl_clear_bad_session(s);
1373 SSL_SESSION_free(s->session);
1375 SSL_SESSION_free(s->psksession);
1376 OPENSSL_free(s->psksession_id);
1380 ssl_cert_free(s->cert);
1381 OPENSSL_free(s->shared_sigalgs);
1382 /* Free up if allocated */
1384 OPENSSL_free(s->ext.hostname);
1385 SSL_CTX_free(s->session_ctx);
1386 OPENSSL_free(s->ext.ecpointformats);
1387 OPENSSL_free(s->ext.peer_ecpointformats);
1388 OPENSSL_free(s->ext.supportedgroups);
1389 OPENSSL_free(s->ext.peer_supportedgroups);
1390 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1391 #ifndef OPENSSL_NO_OCSP
1392 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1394 #ifndef OPENSSL_NO_CT
1395 SCT_LIST_free(s->scts);
1396 OPENSSL_free(s->ext.scts);
1398 OPENSSL_free(s->ext.ocsp.resp);
1399 OPENSSL_free(s->ext.alpn);
1400 OPENSSL_free(s->ext.tls13_cookie);
1401 if (s->clienthello != NULL)
1402 OPENSSL_free(s->clienthello->pre_proc_exts);
1403 OPENSSL_free(s->clienthello);
1404 OPENSSL_free(s->pha_context);
1405 EVP_MD_CTX_free(s->pha_dgst);
1407 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1408 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1410 OSSL_STACK_OF_X509_free(s->verified_chain);
1412 if (ssl->method != NULL)
1413 ssl->method->ssl_deinit(ssl);
1415 ASYNC_WAIT_CTX_free(s->waitctx);
1417 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1418 OPENSSL_free(s->ext.npn);
1421 #ifndef OPENSSL_NO_SRTP
1422 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1426 void SSL_set0_rbio(SSL *s, BIO *rbio)
1428 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1433 BIO_free_all(sc->rbio);
1435 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1438 void SSL_set0_wbio(SSL *s, BIO *wbio)
1440 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1446 * If the output buffering BIO is still in place, remove it
1448 if (sc->bbio != NULL)
1449 sc->wbio = BIO_pop(sc->wbio);
1451 BIO_free_all(sc->wbio);
1454 /* Re-attach |bbio| to the new |wbio|. */
1455 if (sc->bbio != NULL)
1456 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1459 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1462 * For historical reasons, this function has many different cases in
1463 * ownership handling.
1466 /* If nothing has changed, do nothing */
1467 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1471 * If the two arguments are equal then one fewer reference is granted by the
1472 * caller than we want to take
1474 if (rbio != NULL && rbio == wbio)
1478 * If only the wbio is changed only adopt one reference.
1480 if (rbio == SSL_get_rbio(s)) {
1481 SSL_set0_wbio(s, wbio);
1485 * There is an asymmetry here for historical reasons. If only the rbio is
1486 * changed AND the rbio and wbio were originally different, then we only
1487 * adopt one reference.
1489 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1490 SSL_set0_rbio(s, rbio);
1494 /* Otherwise, adopt both references. */
1495 SSL_set0_rbio(s, rbio);
1496 SSL_set0_wbio(s, wbio);
1499 BIO *SSL_get_rbio(const SSL *s)
1501 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1509 BIO *SSL_get_wbio(const SSL *s)
1511 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1516 if (sc->bbio != NULL) {
1518 * If |bbio| is active, the true caller-configured BIO is its
1521 return BIO_next(sc->bbio);
1526 int SSL_get_fd(const SSL *s)
1528 return SSL_get_rfd(s);
1531 int SSL_get_rfd(const SSL *s)
1536 b = SSL_get_rbio(s);
1537 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1539 BIO_get_fd(r, &ret);
1543 int SSL_get_wfd(const SSL *s)
1548 b = SSL_get_wbio(s);
1549 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1551 BIO_get_fd(r, &ret);
1555 #ifndef OPENSSL_NO_SOCK
1556 int SSL_set_fd(SSL *s, int fd)
1561 bio = BIO_new(BIO_s_socket());
1564 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1567 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1568 SSL_set_bio(s, bio, bio);
1569 #ifndef OPENSSL_NO_KTLS
1571 * The new socket is created successfully regardless of ktls_enable.
1572 * ktls_enable doesn't change any functionality of the socket, except
1573 * changing the setsockopt to enable the processing of ktls_start.
1574 * Thus, it is not a problem to call it for non-TLS sockets.
1577 #endif /* OPENSSL_NO_KTLS */
1583 int SSL_set_wfd(SSL *s, int fd)
1585 BIO *rbio = SSL_get_rbio(s);
1587 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1588 || (int)BIO_get_fd(rbio, NULL) != fd) {
1589 BIO *bio = BIO_new(BIO_s_socket());
1592 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1595 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1596 SSL_set0_wbio(s, bio);
1597 #ifndef OPENSSL_NO_KTLS
1599 * The new socket is created successfully regardless of ktls_enable.
1600 * ktls_enable doesn't change any functionality of the socket, except
1601 * changing the setsockopt to enable the processing of ktls_start.
1602 * Thus, it is not a problem to call it for non-TLS sockets.
1605 #endif /* OPENSSL_NO_KTLS */
1608 SSL_set0_wbio(s, rbio);
1613 int SSL_set_rfd(SSL *s, int fd)
1615 BIO *wbio = SSL_get_wbio(s);
1617 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1618 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1619 BIO *bio = BIO_new(BIO_s_socket());
1622 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1625 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1626 SSL_set0_rbio(s, bio);
1629 SSL_set0_rbio(s, wbio);
1636 /* return length of latest Finished message we sent, copy to 'buf' */
1637 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1640 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1645 ret = sc->s3.tmp.finish_md_len;
1648 memcpy(buf, sc->s3.tmp.finish_md, count);
1652 /* return length of latest Finished message we expected, copy to 'buf' */
1653 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1656 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1661 ret = sc->s3.tmp.peer_finish_md_len;
1664 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1668 int SSL_get_verify_mode(const SSL *s)
1670 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1675 return sc->verify_mode;
1678 int SSL_get_verify_depth(const SSL *s)
1680 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1685 return X509_VERIFY_PARAM_get_depth(sc->param);
1688 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1689 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1694 return sc->verify_callback;
1697 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1699 return ctx->verify_mode;
1702 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1704 return X509_VERIFY_PARAM_get_depth(ctx->param);
1707 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1708 return ctx->default_verify_callback;
1711 void SSL_set_verify(SSL *s, int mode,
1712 int (*callback) (int ok, X509_STORE_CTX *ctx))
1714 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1719 sc->verify_mode = mode;
1720 if (callback != NULL)
1721 sc->verify_callback = callback;
1724 void SSL_set_verify_depth(SSL *s, int depth)
1726 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1731 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1734 void SSL_set_read_ahead(SSL *s, int yes)
1736 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1737 OSSL_PARAM options[2], *opts = options;
1742 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1744 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1745 &sc->rlayer.read_ahead);
1746 *opts = OSSL_PARAM_construct_end();
1748 /* Ignore return value */
1749 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1752 int SSL_get_read_ahead(const SSL *s)
1754 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1759 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1762 int SSL_pending(const SSL *s)
1764 size_t pending = s->method->ssl_pending(s);
1767 * SSL_pending cannot work properly if read-ahead is enabled
1768 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1769 * impossible to fix since SSL_pending cannot report errors that may be
1770 * observed while scanning the new data. (Note that SSL_pending() is
1771 * often used as a boolean value, so we'd better not return -1.)
1773 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1774 * we just return INT_MAX.
1776 return pending < INT_MAX ? (int)pending : INT_MAX;
1779 int SSL_has_pending(const SSL *s)
1782 * Similar to SSL_pending() but returns a 1 to indicate that we have
1783 * processed or unprocessed data available or 0 otherwise (as opposed to the
1784 * number of bytes available). Unlike SSL_pending() this will take into
1785 * account read_ahead data. A 1 return simply indicates that we have data.
1786 * That data may not result in any application data, or we may fail to parse
1787 * the records for some reason.
1789 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1791 /* Check buffered app data if any first */
1792 if (SSL_CONNECTION_IS_DTLS(sc)) {
1796 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1797 while ((item = pqueue_next(&iter)) != NULL) {
1799 if (rdata->length > 0)
1804 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1807 return RECORD_LAYER_read_pending(&sc->rlayer);
1810 X509 *SSL_get1_peer_certificate(const SSL *s)
1812 X509 *r = SSL_get0_peer_certificate(s);
1820 X509 *SSL_get0_peer_certificate(const SSL *s)
1822 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1827 if (sc->session == NULL)
1830 return sc->session->peer;
1833 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1836 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1841 if (sc->session == NULL)
1844 r = sc->session->peer_chain;
1847 * If we are a client, cert_chain includes the peer's own certificate; if
1848 * we are a server, it does not.
1855 * Now in theory, since the calling process own 't' it should be safe to
1856 * modify. We need to be able to read f without being hassled
1858 int SSL_copy_session_id(SSL *t, const SSL *f)
1861 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1862 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1863 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1865 if (tsc == NULL || fsc == NULL)
1868 /* Do we need to do SSL locking? */
1869 if (!SSL_set_session(t, SSL_get_session(f))) {
1874 * what if we are setup for one protocol version but want to talk another
1876 if (t->method != f->method) {
1877 t->method->ssl_deinit(t);
1878 t->method = f->method;
1879 if (t->method->ssl_init(t) == 0)
1883 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1884 ssl_cert_free(tsc->cert);
1885 tsc->cert = fsc->cert;
1886 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1893 /* Fix this so it checks all the valid key/cert options */
1894 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1896 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1897 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1900 if (ctx->cert->key->privatekey == NULL) {
1901 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1904 return X509_check_private_key
1905 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1908 /* Fix this function so that it takes an optional type parameter */
1909 int SSL_check_private_key(const SSL *ssl)
1911 const SSL_CONNECTION *sc;
1913 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1914 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1917 if (sc->cert->key->x509 == NULL) {
1918 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1921 if (sc->cert->key->privatekey == NULL) {
1922 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1925 return X509_check_private_key(sc->cert->key->x509,
1926 sc->cert->key->privatekey);
1929 int SSL_waiting_for_async(SSL *s)
1931 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1942 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1944 ASYNC_WAIT_CTX *ctx;
1945 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1950 if ((ctx = sc->waitctx) == NULL)
1952 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1955 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1956 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1958 ASYNC_WAIT_CTX *ctx;
1959 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1964 if ((ctx = sc->waitctx) == NULL)
1966 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1970 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1972 ctx->async_cb = callback;
1976 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1978 ctx->async_cb_arg = arg;
1982 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1984 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1989 sc->async_cb = callback;
1993 int SSL_set_async_callback_arg(SSL *s, void *arg)
1995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2000 sc->async_cb_arg = arg;
2004 int SSL_get_async_status(SSL *s, int *status)
2006 ASYNC_WAIT_CTX *ctx;
2007 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2012 if ((ctx = sc->waitctx) == NULL)
2014 *status = ASYNC_WAIT_CTX_get_status(ctx);
2018 int SSL_accept(SSL *s)
2020 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2025 if (sc->handshake_func == NULL) {
2026 /* Not properly initialized yet */
2027 SSL_set_accept_state(s);
2030 return SSL_do_handshake(s);
2033 int SSL_connect(SSL *s)
2035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2040 if (sc->handshake_func == NULL) {
2041 /* Not properly initialized yet */
2042 SSL_set_connect_state(s);
2045 return SSL_do_handshake(s);
2048 long SSL_get_default_timeout(const SSL *s)
2050 return (long int)ossl_time2seconds(s->method->get_timeout());
2053 static int ssl_async_wait_ctx_cb(void *arg)
2055 SSL *s = (SSL *)arg;
2056 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2061 return sc->async_cb(s, sc->async_cb_arg);
2064 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2065 int (*func) (void *))
2068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2073 if (sc->waitctx == NULL) {
2074 sc->waitctx = ASYNC_WAIT_CTX_new();
2075 if (sc->waitctx == NULL)
2077 if (sc->async_cb != NULL
2078 && !ASYNC_WAIT_CTX_set_callback
2079 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2083 sc->rwstate = SSL_NOTHING;
2084 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2085 sizeof(struct ssl_async_args))) {
2087 sc->rwstate = SSL_NOTHING;
2088 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2091 sc->rwstate = SSL_ASYNC_PAUSED;
2094 sc->rwstate = SSL_ASYNC_NO_JOBS;
2100 sc->rwstate = SSL_NOTHING;
2101 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2102 /* Shouldn't happen */
2107 static int ssl_io_intern(void *vargs)
2109 struct ssl_async_args *args;
2115 args = (struct ssl_async_args *)vargs;
2119 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2122 switch (args->type) {
2124 return args->f.func_read(s, buf, num, &sc->asyncrw);
2126 return args->f.func_write(s, buf, num, &sc->asyncrw);
2128 return args->f.func_other(s);
2133 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2135 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2140 if (sc->handshake_func == NULL) {
2141 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2145 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2146 sc->rwstate = SSL_NOTHING;
2150 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2151 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2152 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2156 * If we are a client and haven't received the ServerHello etc then we
2159 ossl_statem_check_finish_init(sc, 0);
2161 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2162 struct ssl_async_args args;
2168 args.type = READFUNC;
2169 args.f.func_read = s->method->ssl_read;
2171 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2172 *readbytes = sc->asyncrw;
2175 return s->method->ssl_read(s, buf, num, readbytes);
2179 int SSL_read(SSL *s, void *buf, int num)
2185 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2189 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2192 * The cast is safe here because ret should be <= INT_MAX because num is
2196 ret = (int)readbytes;
2201 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2203 int ret = ssl_read_internal(s, buf, num, readbytes);
2210 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2213 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2215 /* TODO(QUIC): This will need special handling for QUIC */
2220 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2221 return SSL_READ_EARLY_DATA_ERROR;
2224 switch (sc->early_data_state) {
2225 case SSL_EARLY_DATA_NONE:
2226 if (!SSL_in_before(s)) {
2227 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2228 return SSL_READ_EARLY_DATA_ERROR;
2232 case SSL_EARLY_DATA_ACCEPT_RETRY:
2233 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2234 ret = SSL_accept(s);
2237 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2238 return SSL_READ_EARLY_DATA_ERROR;
2242 case SSL_EARLY_DATA_READ_RETRY:
2243 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2244 sc->early_data_state = SSL_EARLY_DATA_READING;
2245 ret = SSL_read_ex(s, buf, num, readbytes);
2247 * State machine will update early_data_state to
2248 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2251 if (ret > 0 || (ret <= 0 && sc->early_data_state
2252 != SSL_EARLY_DATA_FINISHED_READING)) {
2253 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2254 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2255 : SSL_READ_EARLY_DATA_ERROR;
2258 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2261 return SSL_READ_EARLY_DATA_FINISH;
2264 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2265 return SSL_READ_EARLY_DATA_ERROR;
2269 int SSL_get_early_data_status(const SSL *s)
2271 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2273 /* TODO(QUIC): This will need special handling for QUIC */
2277 return sc->ext.early_data;
2280 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2282 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2287 if (sc->handshake_func == NULL) {
2288 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2292 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2295 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2296 struct ssl_async_args args;
2302 args.type = READFUNC;
2303 args.f.func_read = s->method->ssl_peek;
2305 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2306 *readbytes = sc->asyncrw;
2309 return s->method->ssl_peek(s, buf, num, readbytes);
2313 int SSL_peek(SSL *s, void *buf, int num)
2319 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2323 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2326 * The cast is safe here because ret should be <= INT_MAX because num is
2330 ret = (int)readbytes;
2336 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2338 int ret = ssl_peek_internal(s, buf, num, readbytes);
2345 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2347 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2352 if (sc->handshake_func == NULL) {
2353 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2357 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2358 sc->rwstate = SSL_NOTHING;
2359 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2363 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2364 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2365 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2366 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2369 /* If we are a client and haven't sent the Finished we better do that */
2370 ossl_statem_check_finish_init(sc, 1);
2372 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2374 struct ssl_async_args args;
2377 args.buf = (void *)buf;
2379 args.type = WRITEFUNC;
2380 args.f.func_write = s->method->ssl_write;
2382 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2383 *written = sc->asyncrw;
2386 return s->method->ssl_write(s, buf, num, written);
2390 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2393 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2398 if (sc->handshake_func == NULL) {
2399 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2403 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2404 sc->rwstate = SSL_NOTHING;
2405 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2409 if (!BIO_get_ktls_send(sc->wbio)) {
2410 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2414 /* If we have an alert to send, lets send it */
2415 if (sc->s3.alert_dispatch) {
2416 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2418 /* SSLfatal() already called if appropriate */
2421 /* if it went, fall through and send more stuff */
2424 sc->rwstate = SSL_WRITING;
2425 if (BIO_flush(sc->wbio) <= 0) {
2426 if (!BIO_should_retry(sc->wbio)) {
2427 sc->rwstate = SSL_NOTHING;
2430 set_sys_error(EAGAIN);
2436 #ifdef OPENSSL_NO_KTLS
2437 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2438 "can't call ktls_sendfile(), ktls disabled");
2441 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2443 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2444 if ((get_last_sys_error() == EAGAIN) ||
2445 (get_last_sys_error() == EINTR) ||
2446 (get_last_sys_error() == EBUSY))
2447 BIO_set_retry_write(sc->wbio);
2450 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2453 sc->rwstate = SSL_NOTHING;
2458 int SSL_write(SSL *s, const void *buf, int num)
2464 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2468 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2471 * The cast is safe here because ret should be <= INT_MAX because num is
2480 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2482 int ret = ssl_write_internal(s, buf, num, written);
2489 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2491 int ret, early_data_state;
2493 uint32_t partialwrite;
2494 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2496 /* TODO(QUIC): This will need special handling for QUIC */
2500 switch (sc->early_data_state) {
2501 case SSL_EARLY_DATA_NONE:
2503 || !SSL_in_before(s)
2504 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2505 && (sc->psk_use_session_cb == NULL))) {
2506 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2511 case SSL_EARLY_DATA_CONNECT_RETRY:
2512 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2513 ret = SSL_connect(s);
2516 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2521 case SSL_EARLY_DATA_WRITE_RETRY:
2522 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2524 * We disable partial write for early data because we don't keep track
2525 * of how many bytes we've written between the SSL_write_ex() call and
2526 * the flush if the flush needs to be retried)
2528 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2529 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2530 ret = SSL_write_ex(s, buf, num, &writtmp);
2531 sc->mode |= partialwrite;
2533 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2536 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2539 case SSL_EARLY_DATA_WRITE_FLUSH:
2540 /* The buffering BIO is still in place so we need to flush it */
2541 if (statem_flush(sc) != 1)
2544 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2547 case SSL_EARLY_DATA_FINISHED_READING:
2548 case SSL_EARLY_DATA_READ_RETRY:
2549 early_data_state = sc->early_data_state;
2550 /* We are a server writing to an unauthenticated client */
2551 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2552 ret = SSL_write_ex(s, buf, num, written);
2553 /* The buffering BIO is still in place */
2555 (void)BIO_flush(sc->wbio);
2556 sc->early_data_state = early_data_state;
2560 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2565 int SSL_shutdown(SSL *s)
2568 * Note that this function behaves differently from what one might
2569 * expect. Return values are 0 for no success (yet), 1 for success; but
2570 * calling it once is usually not enough, even if blocking I/O is used
2571 * (see ssl3_shutdown).
2573 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2578 if (sc->handshake_func == NULL) {
2579 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2583 if (!SSL_in_init(s)) {
2584 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2585 struct ssl_async_args args;
2587 memset(&args, 0, sizeof(args));
2589 args.type = OTHERFUNC;
2590 args.f.func_other = s->method->ssl_shutdown;
2592 return ssl_start_async_job(s, &args, ssl_io_intern);
2594 return s->method->ssl_shutdown(s);
2597 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2602 int SSL_key_update(SSL *s, int updatetype)
2604 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2609 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2610 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2614 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2615 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2616 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2620 if (!SSL_is_init_finished(s)) {
2621 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2625 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2626 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2630 ossl_statem_set_in_init(sc, 1);
2631 sc->key_update = updatetype;
2635 int SSL_get_key_update_type(const SSL *s)
2637 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2642 return sc->key_update;
2646 * Can we accept a renegotiation request? If yes, set the flag and
2647 * return 1 if yes. If not, raise error and return 0.
2649 static int can_renegotiate(const SSL_CONNECTION *sc)
2651 if (SSL_CONNECTION_IS_TLS13(sc)) {
2652 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2656 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2657 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2664 int SSL_renegotiate(SSL *s)
2666 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2671 if (!can_renegotiate(sc))
2674 sc->renegotiate = 1;
2675 sc->new_session = 1;
2676 return s->method->ssl_renegotiate(s);
2679 int SSL_renegotiate_abbreviated(SSL *s)
2681 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2686 if (!can_renegotiate(sc))
2689 sc->renegotiate = 1;
2690 sc->new_session = 0;
2691 return s->method->ssl_renegotiate(s);
2694 int SSL_renegotiate_pending(const SSL *s)
2696 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2702 * becomes true when negotiation is requested; false again once a
2703 * handshake has finished
2705 return (sc->renegotiate != 0);
2708 int SSL_new_session_ticket(SSL *s)
2710 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2715 /* If we are in init because we're sending tickets, okay to send more. */
2716 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2717 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2718 || !SSL_CONNECTION_IS_TLS13(sc))
2720 sc->ext.extra_tickets_expected++;
2721 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2722 ossl_statem_set_in_init(sc, 1);
2726 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2729 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2731 /* TODO(QUIC): Special handling for some ctrls will be needed */
2736 case SSL_CTRL_GET_READ_AHEAD:
2737 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2738 case SSL_CTRL_SET_READ_AHEAD:
2739 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2740 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2743 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2744 sc->msg_callback_arg = parg;
2749 OSSL_PARAM options[2], *opts = options;
2753 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2755 *opts = OSSL_PARAM_construct_end();
2757 /* Ignore return value */
2758 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2762 case SSL_CTRL_CLEAR_MODE:
2763 return (sc->mode &= ~larg);
2764 case SSL_CTRL_GET_MAX_CERT_LIST:
2765 return (long)sc->max_cert_list;
2766 case SSL_CTRL_SET_MAX_CERT_LIST:
2769 l = (long)sc->max_cert_list;
2770 sc->max_cert_list = (size_t)larg;
2772 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2773 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2775 #ifndef OPENSSL_NO_KTLS
2776 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2778 #endif /* OPENSSL_NO_KTLS */
2779 sc->max_send_fragment = larg;
2780 if (sc->max_send_fragment < sc->split_send_fragment)
2781 sc->split_send_fragment = sc->max_send_fragment;
2783 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2784 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2786 sc->split_send_fragment = larg;
2788 case SSL_CTRL_SET_MAX_PIPELINES:
2789 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2791 sc->max_pipelines = larg;
2792 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2793 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2795 case SSL_CTRL_GET_RI_SUPPORT:
2796 return sc->s3.send_connection_binding;
2797 case SSL_CTRL_SET_RETRY_VERIFY:
2798 sc->rwstate = SSL_RETRY_VERIFY;
2800 case SSL_CTRL_CERT_FLAGS:
2801 return (sc->cert->cert_flags |= larg);
2802 case SSL_CTRL_CLEAR_CERT_FLAGS:
2803 return (sc->cert->cert_flags &= ~larg);
2805 case SSL_CTRL_GET_RAW_CIPHERLIST:
2807 if (sc->s3.tmp.ciphers_raw == NULL)
2809 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2810 return (int)sc->s3.tmp.ciphers_rawlen;
2812 return TLS_CIPHER_LEN;
2814 case SSL_CTRL_GET_EXTMS_SUPPORT:
2815 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2817 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2821 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2822 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2823 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2824 &sc->min_proto_version);
2825 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2826 return sc->min_proto_version;
2827 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2828 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2829 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2830 &sc->max_proto_version);
2831 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2832 return sc->max_proto_version;
2834 return s->method->ssl_ctrl(s, cmd, larg, parg);
2838 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2840 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2846 case SSL_CTRL_SET_MSG_CALLBACK:
2847 sc->msg_callback = (void (*)
2848 (int write_p, int version, int content_type,
2849 const void *buf, size_t len, SSL *ssl,
2854 return s->method->ssl_callback_ctrl(s, cmd, fp);
2858 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2860 return ctx->sessions;
2863 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2867 if (ssl_tsan_lock(ctx)) {
2868 res = tsan_load(stat);
2869 ssl_tsan_unlock(ctx);
2874 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2877 /* For some cases with ctx == NULL perform syntax checks */
2880 case SSL_CTRL_SET_GROUPS_LIST:
2881 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2882 case SSL_CTRL_SET_SIGALGS_LIST:
2883 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2884 return tls1_set_sigalgs_list(NULL, parg, 0);
2891 case SSL_CTRL_GET_READ_AHEAD:
2892 return ctx->read_ahead;
2893 case SSL_CTRL_SET_READ_AHEAD:
2894 l = ctx->read_ahead;
2895 ctx->read_ahead = larg;
2898 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2899 ctx->msg_callback_arg = parg;
2902 case SSL_CTRL_GET_MAX_CERT_LIST:
2903 return (long)ctx->max_cert_list;
2904 case SSL_CTRL_SET_MAX_CERT_LIST:
2907 l = (long)ctx->max_cert_list;
2908 ctx->max_cert_list = (size_t)larg;
2911 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2914 l = (long)ctx->session_cache_size;
2915 ctx->session_cache_size = (size_t)larg;
2917 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2918 return (long)ctx->session_cache_size;
2919 case SSL_CTRL_SET_SESS_CACHE_MODE:
2920 l = ctx->session_cache_mode;
2921 ctx->session_cache_mode = larg;
2923 case SSL_CTRL_GET_SESS_CACHE_MODE:
2924 return ctx->session_cache_mode;
2926 case SSL_CTRL_SESS_NUMBER:
2927 return lh_SSL_SESSION_num_items(ctx->sessions);
2928 case SSL_CTRL_SESS_CONNECT:
2929 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2930 case SSL_CTRL_SESS_CONNECT_GOOD:
2931 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2932 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2933 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2934 case SSL_CTRL_SESS_ACCEPT:
2935 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2936 case SSL_CTRL_SESS_ACCEPT_GOOD:
2937 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2938 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2939 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2940 case SSL_CTRL_SESS_HIT:
2941 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2942 case SSL_CTRL_SESS_CB_HIT:
2943 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2944 case SSL_CTRL_SESS_MISSES:
2945 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2946 case SSL_CTRL_SESS_TIMEOUTS:
2947 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2948 case SSL_CTRL_SESS_CACHE_FULL:
2949 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2951 return (ctx->mode |= larg);
2952 case SSL_CTRL_CLEAR_MODE:
2953 return (ctx->mode &= ~larg);
2954 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2955 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2957 ctx->max_send_fragment = larg;
2958 if (ctx->max_send_fragment < ctx->split_send_fragment)
2959 ctx->split_send_fragment = ctx->max_send_fragment;
2961 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2962 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2964 ctx->split_send_fragment = larg;
2966 case SSL_CTRL_SET_MAX_PIPELINES:
2967 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2969 ctx->max_pipelines = larg;
2971 case SSL_CTRL_CERT_FLAGS:
2972 return (ctx->cert->cert_flags |= larg);
2973 case SSL_CTRL_CLEAR_CERT_FLAGS:
2974 return (ctx->cert->cert_flags &= ~larg);
2975 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2976 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2977 && ssl_set_version_bound(ctx->method->version, (int)larg,
2978 &ctx->min_proto_version);
2979 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2980 return ctx->min_proto_version;
2981 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2982 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2983 && ssl_set_version_bound(ctx->method->version, (int)larg,
2984 &ctx->max_proto_version);
2985 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2986 return ctx->max_proto_version;
2988 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2992 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2995 case SSL_CTRL_SET_MSG_CALLBACK:
2996 ctx->msg_callback = (void (*)
2997 (int write_p, int version, int content_type,
2998 const void *buf, size_t len, SSL *ssl,
3003 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3007 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3016 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3017 const SSL_CIPHER *const *bp)
3019 if ((*ap)->id > (*bp)->id)
3021 if ((*ap)->id < (*bp)->id)
3027 * return a STACK of the ciphers available for the SSL and in order of
3030 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3032 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3035 if (sc->cipher_list != NULL) {
3036 return sc->cipher_list;
3037 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3038 return s->ctx->cipher_list;
3044 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3046 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3048 if (sc == NULL || !sc->server)
3050 return sc->peer_ciphers;
3053 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3055 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3057 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3062 ciphers = SSL_get_ciphers(s);
3065 if (!ssl_set_client_disabled(sc))
3067 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3068 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3069 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3071 sk = sk_SSL_CIPHER_new_null();
3074 if (!sk_SSL_CIPHER_push(sk, c)) {
3075 sk_SSL_CIPHER_free(sk);
3083 /** return a STACK of the ciphers available for the SSL and in order of
3085 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3088 if (s->cipher_list_by_id != NULL)
3089 return s->cipher_list_by_id;
3090 else if (s->ssl.ctx != NULL
3091 && s->ssl.ctx->cipher_list_by_id != NULL)
3092 return s->ssl.ctx->cipher_list_by_id;
3097 /** The old interface to get the same thing as SSL_get_ciphers() */
3098 const char *SSL_get_cipher_list(const SSL *s, int n)
3100 const SSL_CIPHER *c;
3101 STACK_OF(SSL_CIPHER) *sk;
3105 sk = SSL_get_ciphers(s);
3106 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3108 c = sk_SSL_CIPHER_value(sk, n);
3114 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3116 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3119 return ctx->cipher_list;
3124 * Distinguish between ciphers controlled by set_ciphersuite() and
3125 * set_cipher_list() when counting.
3127 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3130 const SSL_CIPHER *c;
3134 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3135 c = sk_SSL_CIPHER_value(sk, i);
3136 if (c->min_tls >= TLS1_3_VERSION)
3143 /** specify the ciphers to be used by default by the SSL_CTX */
3144 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3146 STACK_OF(SSL_CIPHER) *sk;
3148 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3149 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3152 * ssl_create_cipher_list may return an empty stack if it was unable to
3153 * find a cipher matching the given rule string (for example if the rule
3154 * string specifies a cipher which has been disabled). This is not an
3155 * error as far as ssl_create_cipher_list is concerned, and hence
3156 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3160 else if (cipher_list_tls12_num(sk) == 0) {
3161 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3167 /** specify the ciphers to be used by the SSL */
3168 int SSL_set_cipher_list(SSL *s, const char *str)
3170 STACK_OF(SSL_CIPHER) *sk;
3171 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3176 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3177 &sc->cipher_list, &sc->cipher_list_by_id, str,
3179 /* see comment in SSL_CTX_set_cipher_list */
3182 else if (cipher_list_tls12_num(sk) == 0) {
3183 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3189 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3192 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3193 const SSL_CIPHER *c;
3195 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3201 || sc->peer_ciphers == NULL
3206 clntsk = sc->peer_ciphers;
3207 srvrsk = SSL_get_ciphers(s);
3208 if (clntsk == NULL || srvrsk == NULL)
3211 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3214 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3217 c = sk_SSL_CIPHER_value(clntsk, i);
3218 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3221 n = strlen(c->name);
3238 * Return the requested servername (SNI) value. Note that the behaviour varies
3240 * - whether this is called by the client or the server,
3241 * - if we are before or during/after the handshake,
3242 * - if a resumption or normal handshake is being attempted/has occurred
3243 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3245 * Note that only the host_name type is defined (RFC 3546).
3247 const char *SSL_get_servername(const SSL *s, const int type)
3249 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3256 * If we don't know if we are the client or the server yet then we assume
3259 server = sc->handshake_func == NULL ? 0 : sc->server;
3261 if (type != TLSEXT_NAMETYPE_host_name)
3267 * In TLSv1.3 on the server SNI is not associated with the session
3268 * but in TLSv1.2 or below it is.
3270 * Before the handshake:
3273 * During/after the handshake (TLSv1.2 or below resumption occurred):
3274 * - If a servername was accepted by the server in the original
3275 * handshake then it will return that servername, or NULL otherwise.
3277 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3278 * - The function will return the servername requested by the client in
3279 * this handshake or NULL if none was requested.
3281 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3282 return sc->session->ext.hostname;
3287 * Before the handshake:
3288 * - If a servername has been set via a call to
3289 * SSL_set_tlsext_host_name() then it will return that servername
3290 * - If one has not been set, but a TLSv1.2 resumption is being
3291 * attempted and the session from the original handshake had a
3292 * servername accepted by the server then it will return that
3294 * - Otherwise it returns NULL
3296 * During/after the handshake (TLSv1.2 or below resumption occurred):
3297 * - If the session from the original handshake had a servername accepted
3298 * by the server then it will return that servername.
3299 * - Otherwise it returns the servername set via
3300 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3302 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3303 * - It will return the servername set via SSL_set_tlsext_host_name()
3304 * (or NULL if it was not called).
3306 if (SSL_in_before(s)) {
3307 if (sc->ext.hostname == NULL
3308 && sc->session != NULL
3309 && sc->session->ssl_version != TLS1_3_VERSION)
3310 return sc->session->ext.hostname;
3312 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3313 && sc->session->ext.hostname != NULL)
3314 return sc->session->ext.hostname;
3318 return sc->ext.hostname;
3321 int SSL_get_servername_type(const SSL *s)
3323 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3324 return TLSEXT_NAMETYPE_host_name;
3329 * SSL_select_next_proto implements the standard protocol selection. It is
3330 * expected that this function is called from the callback set by
3331 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3332 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3333 * not included in the length. A byte string of length 0 is invalid. No byte
3334 * string may be truncated. The current, but experimental algorithm for
3335 * selecting the protocol is: 1) If the server doesn't support NPN then this
3336 * is indicated to the callback. In this case, the client application has to
3337 * abort the connection or have a default application level protocol. 2) If
3338 * the server supports NPN, but advertises an empty list then the client
3339 * selects the first protocol in its list, but indicates via the API that this
3340 * fallback case was enacted. 3) Otherwise, the client finds the first
3341 * protocol in the server's list that it supports and selects this protocol.
3342 * This is because it's assumed that the server has better information about
3343 * which protocol a client should use. 4) If the client doesn't support any
3344 * of the server's advertised protocols, then this is treated the same as
3345 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3346 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3348 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3349 const unsigned char *server,
3350 unsigned int server_len,
3351 const unsigned char *client, unsigned int client_len)
3354 const unsigned char *result;
3355 int status = OPENSSL_NPN_UNSUPPORTED;
3358 * For each protocol in server preference order, see if we support it.
3360 for (i = 0; i < server_len;) {
3361 for (j = 0; j < client_len;) {
3362 if (server[i] == client[j] &&
3363 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3364 /* We found a match */
3365 result = &server[i];
3366 status = OPENSSL_NPN_NEGOTIATED;
3376 /* There's no overlap between our protocols and the server's list. */
3378 status = OPENSSL_NPN_NO_OVERLAP;
3381 *out = (unsigned char *)result + 1;
3382 *outlen = result[0];
3386 #ifndef OPENSSL_NO_NEXTPROTONEG
3388 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3389 * client's requested protocol for this connection and returns 0. If the
3390 * client didn't request any protocol, then *data is set to NULL. Note that
3391 * the client can request any protocol it chooses. The value returned from
3392 * this function need not be a member of the list of supported protocols
3393 * provided by the callback.
3395 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3398 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3401 /* We have no other way to indicate error */
3407 *data = sc->ext.npn;
3408 if (*data == NULL) {
3411 *len = (unsigned int)sc->ext.npn_len;
3416 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3417 * a TLS server needs a list of supported protocols for Next Protocol
3418 * Negotiation. The returned list must be in wire format. The list is
3419 * returned by setting |out| to point to it and |outlen| to its length. This
3420 * memory will not be modified, but one should assume that the SSL* keeps a
3421 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3422 * wishes to advertise. Otherwise, no such extension will be included in the
3425 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3426 SSL_CTX_npn_advertised_cb_func cb,
3429 ctx->ext.npn_advertised_cb = cb;
3430 ctx->ext.npn_advertised_cb_arg = arg;
3434 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3435 * client needs to select a protocol from the server's provided list. |out|
3436 * must be set to point to the selected protocol (which may be within |in|).
3437 * The length of the protocol name must be written into |outlen|. The
3438 * server's advertised protocols are provided in |in| and |inlen|. The
3439 * callback can assume that |in| is syntactically valid. The client must
3440 * select a protocol. It is fatal to the connection if this callback returns
3441 * a value other than SSL_TLSEXT_ERR_OK.
3443 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3444 SSL_CTX_npn_select_cb_func cb,
3447 ctx->ext.npn_select_cb = cb;
3448 ctx->ext.npn_select_cb_arg = arg;
3452 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3456 if (protos_len < 2 || protos == NULL)
3459 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3460 if (protos[idx] == 0)
3463 return idx == protos_len;
3466 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3467 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3468 * length-prefixed strings). Returns 0 on success.
3470 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3471 unsigned int protos_len)
3473 unsigned char *alpn;
3475 if (protos_len == 0 || protos == NULL) {
3476 OPENSSL_free(ctx->ext.alpn);
3477 ctx->ext.alpn = NULL;
3478 ctx->ext.alpn_len = 0;
3481 /* Not valid per RFC */
3482 if (!alpn_value_ok(protos, protos_len))
3485 alpn = OPENSSL_memdup(protos, protos_len);
3487 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3490 OPENSSL_free(ctx->ext.alpn);
3491 ctx->ext.alpn = alpn;
3492 ctx->ext.alpn_len = protos_len;
3498 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3499 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3500 * length-prefixed strings). Returns 0 on success.
3502 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3503 unsigned int protos_len)
3505 unsigned char *alpn;
3506 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3511 if (protos_len == 0 || protos == NULL) {
3512 OPENSSL_free(sc->ext.alpn);
3513 sc->ext.alpn = NULL;
3514 sc->ext.alpn_len = 0;
3517 /* Not valid per RFC */
3518 if (!alpn_value_ok(protos, protos_len))
3521 alpn = OPENSSL_memdup(protos, protos_len);
3523 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3526 OPENSSL_free(sc->ext.alpn);
3527 sc->ext.alpn = alpn;
3528 sc->ext.alpn_len = protos_len;
3534 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3535 * called during ClientHello processing in order to select an ALPN protocol
3536 * from the client's list of offered protocols.
3538 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3539 SSL_CTX_alpn_select_cb_func cb,
3542 ctx->ext.alpn_select_cb = cb;
3543 ctx->ext.alpn_select_cb_arg = arg;
3547 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3548 * On return it sets |*data| to point to |*len| bytes of protocol name
3549 * (not including the leading length-prefix byte). If the server didn't
3550 * respond with a negotiated protocol then |*len| will be zero.
3552 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3555 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3558 /* We have no other way to indicate error */
3564 *data = sc->s3.alpn_selected;
3568 *len = (unsigned int)sc->s3.alpn_selected_len;
3571 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3572 const char *label, size_t llen,
3573 const unsigned char *context, size_t contextlen,
3576 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3581 if (sc->session == NULL
3582 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3585 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3587 contextlen, use_context);
3590 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3591 const char *label, size_t llen,
3592 const unsigned char *context,
3595 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3600 if (sc->version != TLS1_3_VERSION)
3603 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3604 context, contextlen);
3607 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3609 const unsigned char *session_id = a->session_id;
3611 unsigned char tmp_storage[4];
3613 if (a->session_id_length < sizeof(tmp_storage)) {
3614 memset(tmp_storage, 0, sizeof(tmp_storage));
3615 memcpy(tmp_storage, a->session_id, a->session_id_length);
3616 session_id = tmp_storage;
3620 ((unsigned long)session_id[0]) |
3621 ((unsigned long)session_id[1] << 8L) |
3622 ((unsigned long)session_id[2] << 16L) |
3623 ((unsigned long)session_id[3] << 24L);
3628 * NB: If this function (or indeed the hash function which uses a sort of
3629 * coarser function than this one) is changed, ensure
3630 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3631 * being able to construct an SSL_SESSION that will collide with any existing
3632 * session with a matching session ID.
3634 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3636 if (a->ssl_version != b->ssl_version)
3638 if (a->session_id_length != b->session_id_length)
3640 return memcmp(a->session_id, b->session_id, a->session_id_length);
3644 * These wrapper functions should remain rather than redeclaring
3645 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3646 * variable. The reason is that the functions aren't static, they're exposed
3650 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3651 const SSL_METHOD *meth)
3653 SSL_CTX *ret = NULL;
3656 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3660 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3663 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3664 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3667 ret = OPENSSL_zalloc(sizeof(*ret));
3671 /* Init the reference counting before any call to SSL_CTX_free */
3672 ret->references = 1;
3673 ret->lock = CRYPTO_THREAD_lock_new();
3674 if (ret->lock == NULL) {
3675 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3680 #ifdef TSAN_REQUIRES_LOCKING
3681 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3682 if (ret->tsan_lock == NULL) {
3683 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3688 ret->libctx = libctx;
3689 if (propq != NULL) {
3690 ret->propq = OPENSSL_strdup(propq);
3691 if (ret->propq == NULL)
3696 ret->min_proto_version = 0;
3697 ret->max_proto_version = 0;
3698 ret->mode = SSL_MODE_AUTO_RETRY;
3699 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3700 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3701 /* We take the system default. */
3702 ret->session_timeout = meth->get_timeout();
3703 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3704 ret->verify_mode = SSL_VERIFY_NONE;
3705 if ((ret->cert = ssl_cert_new()) == NULL)
3708 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3709 if (ret->sessions == NULL)
3711 ret->cert_store = X509_STORE_new();
3712 if (ret->cert_store == NULL)
3714 #ifndef OPENSSL_NO_CT
3715 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3716 if (ret->ctlog_store == NULL)
3720 /* initialize cipher/digest methods table */
3721 if (!ssl_load_ciphers(ret))
3723 /* initialise sig algs */
3724 if (!ssl_setup_sig_algs(ret))
3728 if (!ssl_load_groups(ret))
3731 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3734 if (!ssl_create_cipher_list(ret,
3735 ret->tls13_ciphersuites,
3736 &ret->cipher_list, &ret->cipher_list_by_id,
3737 OSSL_default_cipher_list(), ret->cert)
3738 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3739 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3743 ret->param = X509_VERIFY_PARAM_new();
3744 if (ret->param == NULL)
3748 * If these aren't available from the provider we'll get NULL returns.
3749 * That's fine but will cause errors later if SSLv3 is negotiated
3751 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3752 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3754 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3757 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3760 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3763 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3766 /* No compression for DTLS */
3767 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3768 ret->comp_methods = SSL_COMP_get_compression_methods();
3770 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3771 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3773 /* Setup RFC5077 ticket keys */
3774 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3775 sizeof(ret->ext.tick_key_name), 0) <= 0)
3776 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3777 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3778 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3779 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3780 ret->options |= SSL_OP_NO_TICKET;
3782 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3783 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3786 #ifndef OPENSSL_NO_SRP
3787 if (!ssl_ctx_srp_ctx_init_intern(ret))
3790 #ifndef OPENSSL_NO_ENGINE
3791 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3792 # define eng_strx(x) #x
3793 # define eng_str(x) eng_strx(x)
3794 /* Use specific client engine automatically... ignore errors */
3797 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3800 ENGINE_load_builtin_engines();
3801 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3803 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3809 * Disable compression by default to prevent CRIME. Applications can
3810 * re-enable compression by configuring
3811 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3812 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3813 * middlebox compatibility by default. This may be disabled by default in
3814 * a later OpenSSL version.
3816 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3818 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3821 * We cannot usefully set a default max_early_data here (which gets
3822 * propagated in SSL_new(), for the following reason: setting the
3823 * SSL field causes tls_construct_stoc_early_data() to tell the
3824 * client that early data will be accepted when constructing a TLS 1.3
3825 * session ticket, and the client will accordingly send us early data
3826 * when using that ticket (if the client has early data to send).
3827 * However, in order for the early data to actually be consumed by
3828 * the application, the application must also have calls to
3829 * SSL_read_early_data(); otherwise we'll just skip past the early data
3830 * and ignore it. So, since the application must add calls to
3831 * SSL_read_early_data(), we also require them to add
3832 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3833 * eliminating the bandwidth-wasting early data in the case described
3836 ret->max_early_data = 0;
3839 * Default recv_max_early_data is a fully loaded single record. Could be
3840 * split across multiple records in practice. We set this differently to
3841 * max_early_data so that, in the default case, we do not advertise any
3842 * support for early_data, but if a client were to send us some (e.g.
3843 * because of an old, stale ticket) then we will tolerate it and skip over
3846 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3848 /* By default we send two session tickets automatically in TLSv1.3 */
3849 ret->num_tickets = 2;
3851 ssl_ctx_system_config(ret);
3855 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3861 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3863 return SSL_CTX_new_ex(NULL, NULL, meth);
3866 int SSL_CTX_up_ref(SSL_CTX *ctx)
3870 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3873 REF_PRINT_COUNT("SSL_CTX", ctx);
3874 REF_ASSERT_ISNT(i < 2);
3875 return ((i > 1) ? 1 : 0);
3878 void SSL_CTX_free(SSL_CTX *a)
3886 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3887 REF_PRINT_COUNT("SSL_CTX", a);
3890 REF_ASSERT_ISNT(i < 0);
3892 X509_VERIFY_PARAM_free(a->param);
3893 dane_ctx_final(&a->dane);
3896 * Free internal session cache. However: the remove_cb() may reference
3897 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3898 * after the sessions were flushed.
3899 * As the ex_data handling routines might also touch the session cache,
3900 * the most secure solution seems to be: empty (flush) the cache, then
3901 * free ex_data, then finally free the cache.
3902 * (See ticket [openssl.org #212].)
3904 if (a->sessions != NULL)
3905 SSL_CTX_flush_sessions(a, 0);
3907 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3908 lh_SSL_SESSION_free(a->sessions);
3909 X509_STORE_free(a->cert_store);
3910 #ifndef OPENSSL_NO_CT
3911 CTLOG_STORE_free(a->ctlog_store);
3913 sk_SSL_CIPHER_free(a->cipher_list);
3914 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3915 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3916 ssl_cert_free(a->cert);
3917 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3918 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3919 OSSL_STACK_OF_X509_free(a->extra_certs);
3920 a->comp_methods = NULL;
3921 #ifndef OPENSSL_NO_SRTP
3922 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3924 #ifndef OPENSSL_NO_SRP
3925 ssl_ctx_srp_ctx_free_intern(a);
3927 #ifndef OPENSSL_NO_ENGINE
3928 tls_engine_finish(a->client_cert_engine);
3931 OPENSSL_free(a->ext.ecpointformats);
3932 OPENSSL_free(a->ext.supportedgroups);
3933 OPENSSL_free(a->ext.supported_groups_default);
3934 OPENSSL_free(a->ext.alpn);
3935 OPENSSL_secure_free(a->ext.secure);
3937 ssl_evp_md_free(a->md5);
3938 ssl_evp_md_free(a->sha1);
3940 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3941 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3942 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3943 ssl_evp_md_free(a->ssl_digest_methods[j]);
3944 for (j = 0; j < a->group_list_len; j++) {
3945 OPENSSL_free(a->group_list[j].tlsname);
3946 OPENSSL_free(a->group_list[j].realname);
3947 OPENSSL_free(a->group_list[j].algorithm);
3949 OPENSSL_free(a->group_list);
3951 OPENSSL_free(a->sigalg_lookup_cache);
3953 CRYPTO_THREAD_lock_free(a->lock);
3954 #ifdef TSAN_REQUIRES_LOCKING
3955 CRYPTO_THREAD_lock_free(a->tsan_lock);
3958 OPENSSL_free(a->propq);
3963 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3965 ctx->default_passwd_callback = cb;
3968 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3970 ctx->default_passwd_callback_userdata = u;
3973 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3975 return ctx->default_passwd_callback;
3978 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3980 return ctx->default_passwd_callback_userdata;
3983 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3985 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3990 sc->default_passwd_callback = cb;
3993 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4000 sc->default_passwd_callback_userdata = u;
4003 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4005 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4010 return sc->default_passwd_callback;
4013 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4015 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4020 return sc->default_passwd_callback_userdata;
4023 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4024 int (*cb) (X509_STORE_CTX *, void *),
4027 ctx->app_verify_callback = cb;
4028 ctx->app_verify_arg = arg;
4031 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4032 int (*cb) (int, X509_STORE_CTX *))
4034 ctx->verify_mode = mode;
4035 ctx->default_verify_callback = cb;
4038 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4040 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4043 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4045 ssl_cert_set_cert_cb(c->cert, cb, arg);
4048 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4050 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4055 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4058 void ssl_set_masks(SSL_CONNECTION *s)
4061 uint32_t *pvalid = s->s3.tmp.valid_flags;
4062 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4063 unsigned long mask_k, mask_a;
4064 int have_ecc_cert, ecdsa_ok;
4069 dh_tmp = (c->dh_tmp != NULL
4070 || c->dh_tmp_cb != NULL
4073 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4074 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4075 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4076 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4080 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4081 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4083 #ifndef OPENSSL_NO_GOST
4084 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4085 mask_k |= SSL_kGOST | SSL_kGOST18;
4086 mask_a |= SSL_aGOST12;
4088 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4089 mask_k |= SSL_kGOST | SSL_kGOST18;
4090 mask_a |= SSL_aGOST12;
4092 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4093 mask_k |= SSL_kGOST;
4094 mask_a |= SSL_aGOST01;
4105 * If we only have an RSA-PSS certificate allow RSA authentication
4106 * if TLS 1.2 and peer supports it.
4109 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4110 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4111 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4118 mask_a |= SSL_aNULL;
4121 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4122 * depending on the key usage extension.
4124 if (have_ecc_cert) {
4126 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4127 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4128 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4131 mask_a |= SSL_aECDSA;
4133 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4134 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4135 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4136 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4137 mask_a |= SSL_aECDSA;
4139 /* Allow Ed448 for TLS 1.2 if peer supports it */
4140 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4141 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4142 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4143 mask_a |= SSL_aECDSA;
4145 mask_k |= SSL_kECDHE;
4147 #ifndef OPENSSL_NO_PSK
4150 if (mask_k & SSL_kRSA)
4151 mask_k |= SSL_kRSAPSK;
4152 if (mask_k & SSL_kDHE)
4153 mask_k |= SSL_kDHEPSK;
4154 if (mask_k & SSL_kECDHE)
4155 mask_k |= SSL_kECDHEPSK;
4158 s->s3.tmp.mask_k = mask_k;
4159 s->s3.tmp.mask_a = mask_a;
4162 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4164 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4165 /* key usage, if present, must allow signing */
4166 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4167 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4171 return 1; /* all checks are ok */
4174 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4175 const unsigned char **serverinfo,
4176 size_t *serverinfo_length)
4178 CERT_PKEY *cpk = s->s3.tmp.cert;
4179 *serverinfo_length = 0;
4181 if (cpk == NULL || cpk->serverinfo == NULL)
4184 *serverinfo = cpk->serverinfo;
4185 *serverinfo_length = cpk->serverinfo_length;
4189 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4194 * If the session_id_length is 0, we are not supposed to cache it, and it
4195 * would be rather hard to do anyway :-)
4197 if (s->session->session_id_length == 0)
4201 * If sid_ctx_length is 0 there is no specific application context
4202 * associated with this session, so when we try to resume it and
4203 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4204 * indication that this is actually a session for the proper application
4205 * context, and the *handshake* will fail, not just the resumption attempt.
4206 * Do not cache (on the server) these sessions that are not resumable
4207 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4209 if (s->server && s->session->sid_ctx_length == 0
4210 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4213 i = s->session_ctx->session_cache_mode;
4215 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4217 * Add the session to the internal cache. In server side TLSv1.3 we
4218 * normally don't do this because by default it's a full stateless ticket
4219 * with only a dummy session id so there is no reason to cache it,
4221 * - we are doing early_data, in which case we cache so that we can
4223 * - the application has set a remove_session_cb so needs to know about
4224 * session timeout events
4225 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4227 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4228 && (!SSL_CONNECTION_IS_TLS13(s)
4230 || (s->max_early_data > 0
4231 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4232 || s->session_ctx->remove_session_cb != NULL
4233 || (s->options & SSL_OP_NO_TICKET) != 0))
4234 SSL_CTX_add_session(s->session_ctx, s->session);
4237 * Add the session to the external cache. We do this even in server side
4238 * TLSv1.3 without early data because some applications just want to
4239 * know about the creation of a session and aren't doing a full cache.
4241 if (s->session_ctx->new_session_cb != NULL) {
4242 SSL_SESSION_up_ref(s->session);
4243 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4245 SSL_SESSION_free(s->session);
4249 /* auto flush every 255 connections */
4250 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4251 TSAN_QUALIFIER int *stat;
4253 if (mode & SSL_SESS_CACHE_CLIENT)
4254 stat = &s->session_ctx->stats.sess_connect_good;
4256 stat = &s->session_ctx->stats.sess_accept_good;
4257 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4258 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4262 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4267 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4272 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4275 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4277 /* TODO(QUIC): Do we want this for QUIC? */
4279 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4282 if (s->method != meth) {
4283 const SSL_METHOD *sm = s->method;
4284 int (*hf) (SSL *) = sc->handshake_func;
4286 if (sm->version == meth->version)
4291 ret = s->method->ssl_init(s);
4294 if (hf == sm->ssl_connect)
4295 sc->handshake_func = meth->ssl_connect;
4296 else if (hf == sm->ssl_accept)
4297 sc->handshake_func = meth->ssl_accept;
4302 int SSL_get_error(const SSL *s, int i)
4307 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4310 return SSL_ERROR_NONE;
4312 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4314 return SSL_ERROR_SSL;
4317 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4318 * where we do encode the error
4320 if ((l = ERR_peek_error()) != 0) {
4321 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4322 return SSL_ERROR_SYSCALL;
4324 return SSL_ERROR_SSL;
4327 if (SSL_want_read(s)) {
4328 bio = SSL_get_rbio(s);
4329 if (BIO_should_read(bio))
4330 return SSL_ERROR_WANT_READ;
4331 else if (BIO_should_write(bio))
4333 * This one doesn't make too much sense ... We never try to write
4334 * to the rbio, and an application program where rbio and wbio
4335 * are separate couldn't even know what it should wait for.
4336 * However if we ever set s->rwstate incorrectly (so that we have
4337 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4338 * wbio *are* the same, this test works around that bug; so it
4339 * might be safer to keep it.
4341 return SSL_ERROR_WANT_WRITE;
4342 else if (BIO_should_io_special(bio)) {
4343 reason = BIO_get_retry_reason(bio);
4344 if (reason == BIO_RR_CONNECT)
4345 return SSL_ERROR_WANT_CONNECT;
4346 else if (reason == BIO_RR_ACCEPT)
4347 return SSL_ERROR_WANT_ACCEPT;
4349 return SSL_ERROR_SYSCALL; /* unknown */
4353 if (SSL_want_write(s)) {
4354 /* Access wbio directly - in order to use the buffered bio if present */
4356 if (BIO_should_write(bio))
4357 return SSL_ERROR_WANT_WRITE;
4358 else if (BIO_should_read(bio))
4360 * See above (SSL_want_read(s) with BIO_should_write(bio))
4362 return SSL_ERROR_WANT_READ;
4363 else if (BIO_should_io_special(bio)) {
4364 reason = BIO_get_retry_reason(bio);
4365 if (reason == BIO_RR_CONNECT)
4366 return SSL_ERROR_WANT_CONNECT;
4367 else if (reason == BIO_RR_ACCEPT)
4368 return SSL_ERROR_WANT_ACCEPT;
4370 return SSL_ERROR_SYSCALL;
4373 if (SSL_want_x509_lookup(s))
4374 return SSL_ERROR_WANT_X509_LOOKUP;
4375 if (SSL_want_retry_verify(s))
4376 return SSL_ERROR_WANT_RETRY_VERIFY;
4377 if (SSL_want_async(s))
4378 return SSL_ERROR_WANT_ASYNC;
4379 if (SSL_want_async_job(s))
4380 return SSL_ERROR_WANT_ASYNC_JOB;
4381 if (SSL_want_client_hello_cb(s))
4382 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4384 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4385 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4386 return SSL_ERROR_ZERO_RETURN;
4388 return SSL_ERROR_SYSCALL;
4391 static int ssl_do_handshake_intern(void *vargs)
4393 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4395 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4400 return sc->handshake_func(s);
4403 int SSL_do_handshake(SSL *s)
4406 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4408 /* TODO(QUIC): Special handling for QUIC will be needed */
4412 if (sc->handshake_func == NULL) {
4413 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4417 ossl_statem_check_finish_init(sc, -1);
4419 s->method->ssl_renegotiate_check(s, 0);
4421 if (SSL_in_init(s) || SSL_in_before(s)) {
4422 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4423 struct ssl_async_args args;
4425 memset(&args, 0, sizeof(args));
4428 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4430 ret = sc->handshake_func(s);
4436 void SSL_set_accept_state(SSL *s)
4438 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4440 /* TODO(QUIC): Special handling for QUIC will be needed */
4446 ossl_statem_clear(sc);
4447 sc->handshake_func = s->method->ssl_accept;
4451 void SSL_set_connect_state(SSL *s)
4453 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4455 /* TODO(QUIC): Special handling for QUIC will be needed */
4461 ossl_statem_clear(sc);
4462 sc->handshake_func = s->method->ssl_connect;
4466 int ssl_undefined_function(SSL *s)
4468 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4472 int ssl_undefined_void_function(void)
4474 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4478 int ssl_undefined_const_function(const SSL *s)
4483 const SSL_METHOD *ssl_bad_method(int ver)
4485 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4489 const char *ssl_protocol_to_string(int version)
4493 case TLS1_3_VERSION:
4496 case TLS1_2_VERSION:
4499 case TLS1_1_VERSION:
4514 case DTLS1_2_VERSION:
4522 const char *SSL_get_version(const SSL *s)
4524 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4526 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4530 return ssl_protocol_to_string(sc->version);
4533 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4535 STACK_OF(X509_NAME) *sk;
4544 if ((sk = sk_X509_NAME_new_null()) == NULL)
4546 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4547 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4549 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4552 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4554 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4563 SSL *SSL_dup(SSL *s)
4567 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4568 SSL_CONNECTION *retsc;
4569 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4574 /* If we're not quiescent, just up_ref! */
4575 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4576 CRYPTO_UP_REF(&s->references, &i, s->lock);
4581 * Otherwise, copy configuration state, and session if set.
4583 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4585 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4588 if (sc->session != NULL) {
4590 * Arranges to share the same session via up_ref. This "copies"
4591 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4593 if (!SSL_copy_session_id(ret, s))
4597 * No session has been established yet, so we have to expect that
4598 * s->cert or ret->cert will be changed later -- they should not both
4599 * point to the same object, and thus we can't use
4600 * SSL_copy_session_id.
4602 if (!SSL_set_ssl_method(ret, s->method))
4605 if (sc->cert != NULL) {
4606 ssl_cert_free(retsc->cert);
4607 retsc->cert = ssl_cert_dup(sc->cert);
4608 if (retsc->cert == NULL)
4612 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4613 (int)sc->sid_ctx_length))
4617 if (!ssl_dane_dup(retsc, sc))
4619 retsc->version = sc->version;
4620 retsc->options = sc->options;
4621 retsc->min_proto_version = sc->min_proto_version;
4622 retsc->max_proto_version = sc->max_proto_version;
4623 retsc->mode = sc->mode;
4624 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4625 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4626 retsc->msg_callback = sc->msg_callback;
4627 retsc->msg_callback_arg = sc->msg_callback_arg;
4628 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4629 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4630 retsc->generate_session_id = sc->generate_session_id;
4632 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4634 /* copy app data, a little dangerous perhaps */
4635 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4638 retsc->server = sc->server;
4639 if (sc->handshake_func) {
4641 SSL_set_accept_state(ret);
4643 SSL_set_connect_state(ret);
4645 retsc->shutdown = sc->shutdown;
4646 retsc->hit = sc->hit;
4648 retsc->default_passwd_callback = sc->default_passwd_callback;
4649 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4651 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4653 /* dup the cipher_list and cipher_list_by_id stacks */
4654 if (sc->cipher_list != NULL) {
4655 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4658 if (sc->cipher_list_by_id != NULL)
4659 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4663 /* Dup the client_CA list */
4664 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4665 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4675 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4677 if (s->enc_read_ctx != NULL) {
4678 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4679 s->enc_read_ctx = NULL;
4681 if (s->enc_write_ctx != NULL) {
4682 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4683 s->enc_write_ctx = NULL;
4685 #ifndef OPENSSL_NO_COMP
4686 COMP_CTX_free(s->expand);
4688 COMP_CTX_free(s->compress);
4693 X509 *SSL_get_certificate(const SSL *s)
4695 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4700 if (sc->cert != NULL)
4701 return sc->cert->key->x509;
4706 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4708 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4713 if (sc->cert != NULL)
4714 return sc->cert->key->privatekey;
4719 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4721 if (ctx->cert != NULL)
4722 return ctx->cert->key->x509;
4727 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4729 if (ctx->cert != NULL)
4730 return ctx->cert->key->privatekey;
4735 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4737 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4742 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4743 return sc->session->cipher;
4747 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4749 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4754 return sc->s3.tmp.new_cipher;
4757 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4759 #ifndef OPENSSL_NO_COMP
4760 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4765 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4771 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4773 #ifndef OPENSSL_NO_COMP
4774 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4779 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4785 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4789 if (s->bbio != NULL) {
4790 /* Already buffered. */
4794 bbio = BIO_new(BIO_f_buffer());
4795 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4797 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4801 s->wbio = BIO_push(bbio, s->wbio);
4806 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4808 /* callers ensure s is never null */
4809 if (s->bbio == NULL)
4812 s->wbio = BIO_pop(s->wbio);
4819 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4821 ctx->quiet_shutdown = mode;
4824 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4826 return ctx->quiet_shutdown;
4829 void SSL_set_quiet_shutdown(SSL *s, int mode)
4831 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4833 /* TODO(QUIC): Do we want this for QUIC? */
4837 sc->quiet_shutdown = mode;
4840 int SSL_get_quiet_shutdown(const SSL *s)
4842 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4844 /* TODO(QUIC): Do we want this for QUIC? */
4848 return sc->quiet_shutdown;
4851 void SSL_set_shutdown(SSL *s, int mode)
4853 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4855 /* TODO(QUIC): Do we want this for QUIC? */
4859 sc->shutdown = mode;
4862 int SSL_get_shutdown(const SSL *s)
4864 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4866 /* TODO(QUIC): Do we want this for QUIC? */
4870 return sc->shutdown;
4873 int SSL_version(const SSL *s)
4875 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4877 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4884 int SSL_client_version(const SSL *s)
4886 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4888 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4892 return sc->client_version;
4895 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4900 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4903 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4905 /* TODO(QUIC): Do we need this for QUIC support? */
4909 if (ssl->ctx == ctx)
4912 ctx = sc->session_ctx;
4913 new_cert = ssl_cert_dup(ctx->cert);
4914 if (new_cert == NULL) {
4918 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4919 ssl_cert_free(new_cert);
4923 ssl_cert_free(sc->cert);
4924 sc->cert = new_cert;
4927 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4928 * so setter APIs must prevent invalid lengths from entering the system.
4930 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4934 * If the session ID context matches that of the parent SSL_CTX,
4935 * inherit it from the new SSL_CTX as well. If however the context does
4936 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4937 * leave it unchanged.
4939 if ((ssl->ctx != NULL) &&
4940 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4941 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4942 sc->sid_ctx_length = ctx->sid_ctx_length;
4943 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4946 SSL_CTX_up_ref(ctx);
4947 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4953 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4955 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4959 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4961 X509_LOOKUP *lookup;
4963 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4967 /* We ignore errors, in case the directory doesn't exist */
4970 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4977 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4979 X509_LOOKUP *lookup;
4981 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4985 /* We ignore errors, in case the file doesn't exist */
4988 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4996 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4998 X509_LOOKUP *lookup;
5000 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5004 /* We ignore errors, in case the directory doesn't exist */
5007 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5014 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5016 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5020 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5022 return X509_STORE_load_path(ctx->cert_store, CApath);
5025 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5027 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5031 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5034 if (CAfile == NULL && CApath == NULL)
5036 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5038 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5043 void SSL_set_info_callback(SSL *ssl,
5044 void (*cb) (const SSL *ssl, int type, int val))
5046 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5051 sc->info_callback = cb;
5055 * One compiler (Diab DCC) doesn't like argument names in returned function
5058 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5061 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5066 return sc->info_callback;
5069 void SSL_set_verify_result(SSL *ssl, long arg)
5071 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5076 sc->verify_result = arg;
5079 long SSL_get_verify_result(const SSL *ssl)
5081 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5086 return sc->verify_result;
5089 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5091 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5097 return sizeof(sc->s3.client_random);
5098 if (outlen > sizeof(sc->s3.client_random))
5099 outlen = sizeof(sc->s3.client_random);
5100 memcpy(out, sc->s3.client_random, outlen);
5104 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5106 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5112 return sizeof(sc->s3.server_random);
5113 if (outlen > sizeof(sc->s3.server_random))
5114 outlen = sizeof(sc->s3.server_random);
5115 memcpy(out, sc->s3.server_random, outlen);
5119 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5120 unsigned char *out, size_t outlen)
5123 return session->master_key_length;
5124 if (outlen > session->master_key_length)
5125 outlen = session->master_key_length;
5126 memcpy(out, session->master_key, outlen);
5130 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5133 if (len > sizeof(sess->master_key))
5136 memcpy(sess->master_key, in, len);
5137 sess->master_key_length = len;
5142 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5144 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5147 void *SSL_get_ex_data(const SSL *s, int idx)
5149 return CRYPTO_get_ex_data(&s->ex_data, idx);
5152 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5154 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5157 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5159 return CRYPTO_get_ex_data(&s->ex_data, idx);
5162 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5164 return ctx->cert_store;
5167 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5169 X509_STORE_free(ctx->cert_store);
5170 ctx->cert_store = store;
5173 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5176 X509_STORE_up_ref(store);
5177 SSL_CTX_set_cert_store(ctx, store);
5180 int SSL_want(const SSL *s)
5182 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5190 #ifndef OPENSSL_NO_PSK
5191 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5193 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5194 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5197 OPENSSL_free(ctx->cert->psk_identity_hint);
5198 if (identity_hint != NULL) {
5199 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5200 if (ctx->cert->psk_identity_hint == NULL)
5203 ctx->cert->psk_identity_hint = NULL;
5207 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5209 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5214 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5215 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5218 OPENSSL_free(sc->cert->psk_identity_hint);
5219 if (identity_hint != NULL) {
5220 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5221 if (sc->cert->psk_identity_hint == NULL)
5224 sc->cert->psk_identity_hint = NULL;
5228 const char *SSL_get_psk_identity_hint(const SSL *s)
5230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5232 if (sc == NULL || sc->session == NULL)
5235 return sc->session->psk_identity_hint;
5238 const char *SSL_get_psk_identity(const SSL *s)
5240 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5242 if (sc == NULL || sc->session == NULL)
5245 return sc->session->psk_identity;
5248 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5250 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5255 sc->psk_client_callback = cb;
5258 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5260 ctx->psk_client_callback = cb;
5263 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5270 sc->psk_server_callback = cb;
5273 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5275 ctx->psk_server_callback = cb;
5279 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5281 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5286 sc->psk_find_session_cb = cb;
5289 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5290 SSL_psk_find_session_cb_func cb)
5292 ctx->psk_find_session_cb = cb;
5295 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5297 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5302 sc->psk_use_session_cb = cb;
5305 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5306 SSL_psk_use_session_cb_func cb)
5308 ctx->psk_use_session_cb = cb;
5311 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5312 void (*cb) (int write_p, int version,
5313 int content_type, const void *buf,
5314 size_t len, SSL *ssl, void *arg))
5316 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5319 void SSL_set_msg_callback(SSL *ssl,
5320 void (*cb) (int write_p, int version,
5321 int content_type, const void *buf,
5322 size_t len, SSL *ssl, void *arg))
5324 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5327 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5328 int (*cb) (SSL *ssl,
5332 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5333 (void (*)(void))cb);
5336 void SSL_set_not_resumable_session_callback(SSL *ssl,
5337 int (*cb) (SSL *ssl,
5338 int is_forward_secure))
5340 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5341 (void (*)(void))cb);
5344 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5345 size_t (*cb) (SSL *ssl, int type,
5346 size_t len, void *arg))
5348 ctx->record_padding_cb = cb;
5351 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5353 ctx->record_padding_arg = arg;
5356 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5358 return ctx->record_padding_arg;
5361 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5363 /* block size of 0 or 1 is basically no padding */
5364 if (block_size == 1)
5365 ctx->block_padding = 0;
5366 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5367 ctx->block_padding = block_size;
5373 int SSL_set_record_padding_callback(SSL *ssl,
5374 size_t (*cb) (SSL *ssl, int type,
5375 size_t len, void *arg))
5378 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5383 b = SSL_get_wbio(ssl);
5384 if (b == NULL || !BIO_get_ktls_send(b)) {
5385 sc->record_padding_cb = cb;
5391 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5393 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5398 sc->record_padding_arg = arg;
5401 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5403 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5408 return sc->record_padding_arg;
5411 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5413 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5418 /* block size of 0 or 1 is basically no padding */
5419 if (block_size == 1)
5420 sc->block_padding = 0;
5421 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5422 sc->block_padding = block_size;
5428 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5430 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5435 sc->num_tickets = num_tickets;
5440 size_t SSL_get_num_tickets(const SSL *s)
5442 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5447 return sc->num_tickets;
5450 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5452 ctx->num_tickets = num_tickets;
5457 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5459 return ctx->num_tickets;
5463 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5464 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5465 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5466 * Returns the newly allocated ctx;
5469 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5471 ssl_clear_hash_ctx(hash);
5472 *hash = EVP_MD_CTX_new();
5473 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5474 EVP_MD_CTX_free(*hash);
5481 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5484 EVP_MD_CTX_free(*hash);
5488 /* Retrieve handshake hashes */
5489 int ssl_handshake_hash(SSL_CONNECTION *s,
5490 unsigned char *out, size_t outlen,
5493 EVP_MD_CTX *ctx = NULL;
5494 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5495 int hashleni = EVP_MD_CTX_get_size(hdgst);
5498 if (hashleni < 0 || (size_t)hashleni > outlen) {
5499 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5503 ctx = EVP_MD_CTX_new();
5505 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5509 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5510 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5511 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5515 *hashlen = hashleni;
5519 EVP_MD_CTX_free(ctx);
5523 int SSL_session_reused(const SSL *s)
5525 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5533 int SSL_is_server(const SSL *s)
5535 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5543 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5544 void SSL_set_debug(SSL *s, int debug)
5546 /* Old function was do-nothing anyway... */
5552 void SSL_set_security_level(SSL *s, int level)
5554 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5559 sc->cert->sec_level = level;
5562 int SSL_get_security_level(const SSL *s)
5564 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5569 return sc->cert->sec_level;
5572 void SSL_set_security_callback(SSL *s,
5573 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5574 int op, int bits, int nid,
5575 void *other, void *ex))
5577 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5582 sc->cert->sec_cb = cb;
5585 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5586 const SSL_CTX *ctx, int op,
5587 int bits, int nid, void *other,
5589 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5594 return sc->cert->sec_cb;
5597 void SSL_set0_security_ex_data(SSL *s, void *ex)
5599 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5604 sc->cert->sec_ex = ex;
5607 void *SSL_get0_security_ex_data(const SSL *s)
5609 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5614 return sc->cert->sec_ex;
5617 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5619 ctx->cert->sec_level = level;
5622 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5624 return ctx->cert->sec_level;
5627 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5628 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5629 int op, int bits, int nid,
5630 void *other, void *ex))
5632 ctx->cert->sec_cb = cb;
5635 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5641 return ctx->cert->sec_cb;
5644 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5646 ctx->cert->sec_ex = ex;
5649 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5651 return ctx->cert->sec_ex;
5654 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5656 return ctx->options;
5659 uint64_t SSL_get_options(const SSL *s)
5661 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5669 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5671 return ctx->options |= op;
5674 uint64_t SSL_set_options(SSL *s, uint64_t op)
5676 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5677 OSSL_PARAM options[2], *opts = options;
5684 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5686 *opts = OSSL_PARAM_construct_end();
5688 /* Ignore return value */
5689 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5694 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5696 return ctx->options &= ~op;
5699 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5701 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5706 return sc->options &= ~op;
5709 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5711 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5716 return sc->verified_chain;
5719 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5721 #ifndef OPENSSL_NO_CT
5724 * Moves SCTs from the |src| stack to the |dst| stack.
5725 * The source of each SCT will be set to |origin|.
5726 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5728 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5730 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5731 sct_source_t origin)
5737 *dst = sk_SCT_new_null();
5739 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5744 while (sk_SCT_num(src) > 0) {
5745 sct = sk_SCT_pop(src);
5746 if (SCT_set_source(sct, origin) != 1)
5749 if (sk_SCT_push(*dst, sct) <= 0)
5757 sk_SCT_push(src, sct); /* Put the SCT back */
5762 * Look for data collected during ServerHello and parse if found.
5763 * Returns the number of SCTs extracted.
5765 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5767 int scts_extracted = 0;
5769 if (s->ext.scts != NULL) {
5770 const unsigned char *p = s->ext.scts;
5771 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5773 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5775 SCT_LIST_free(scts);
5778 return scts_extracted;
5782 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5783 * contains an SCT X509 extension. They will be stored in |s->scts|.
5785 * - The number of SCTs extracted, assuming an OCSP response exists.
5786 * - 0 if no OCSP response exists or it contains no SCTs.
5787 * - A negative integer if an error occurs.
5789 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5791 # ifndef OPENSSL_NO_OCSP
5792 int scts_extracted = 0;
5793 const unsigned char *p;
5794 OCSP_BASICRESP *br = NULL;
5795 OCSP_RESPONSE *rsp = NULL;
5796 STACK_OF(SCT) *scts = NULL;
5799 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5802 p = s->ext.ocsp.resp;
5803 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5807 br = OCSP_response_get1_basic(rsp);
5811 for (i = 0; i < OCSP_resp_count(br); ++i) {
5812 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5818 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5820 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5821 if (scts_extracted < 0)
5825 SCT_LIST_free(scts);
5826 OCSP_BASICRESP_free(br);
5827 OCSP_RESPONSE_free(rsp);
5828 return scts_extracted;
5830 /* Behave as if no OCSP response exists */
5836 * Attempts to extract SCTs from the peer certificate.
5837 * Return the number of SCTs extracted, or a negative integer if an error
5840 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5842 int scts_extracted = 0;
5843 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5846 STACK_OF(SCT) *scts =
5847 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5850 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5852 SCT_LIST_free(scts);
5855 return scts_extracted;
5859 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5860 * response (if it exists) and X509v3 extensions in the certificate.
5861 * Returns NULL if an error occurs.
5863 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5865 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5870 if (!sc->scts_parsed) {
5871 if (ct_extract_tls_extension_scts(sc) < 0 ||
5872 ct_extract_ocsp_response_scts(sc) < 0 ||
5873 ct_extract_x509v3_extension_scts(sc) < 0)
5876 sc->scts_parsed = 1;
5883 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5884 const STACK_OF(SCT) *scts, void *unused_arg)
5889 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5890 const STACK_OF(SCT) *scts, void *unused_arg)
5892 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5895 for (i = 0; i < count; ++i) {
5896 SCT *sct = sk_SCT_value(scts, i);
5897 int status = SCT_get_validation_status(sct);
5899 if (status == SCT_VALIDATION_STATUS_VALID)
5902 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5906 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5909 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5915 * Since code exists that uses the custom extension handler for CT, look
5916 * for this and throw an error if they have already registered to use CT.
5918 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5919 TLSEXT_TYPE_signed_certificate_timestamp))
5921 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5925 if (callback != NULL) {
5927 * If we are validating CT, then we MUST accept SCTs served via OCSP
5929 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5933 sc->ct_validation_callback = callback;
5934 sc->ct_validation_callback_arg = arg;
5939 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5940 ssl_ct_validation_cb callback, void *arg)
5943 * Since code exists that uses the custom extension handler for CT, look for
5944 * this and throw an error if they have already registered to use CT.
5946 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5947 TLSEXT_TYPE_signed_certificate_timestamp))
5949 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5953 ctx->ct_validation_callback = callback;
5954 ctx->ct_validation_callback_arg = arg;
5958 int SSL_ct_is_enabled(const SSL *s)
5960 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5965 return sc->ct_validation_callback != NULL;
5968 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5970 return ctx->ct_validation_callback != NULL;
5973 int ssl_validate_ct(SSL_CONNECTION *s)
5976 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5978 SSL_DANE *dane = &s->dane;
5979 CT_POLICY_EVAL_CTX *ctx = NULL;
5980 const STACK_OF(SCT) *scts;
5983 * If no callback is set, the peer is anonymous, or its chain is invalid,
5984 * skip SCT validation - just return success. Applications that continue
5985 * handshakes without certificates, with unverified chains, or pinned leaf
5986 * certificates are outside the scope of the WebPKI and CT.
5988 * The above exclusions notwithstanding the vast majority of peers will
5989 * have rather ordinary certificate chains validated by typical
5990 * applications that perform certificate verification and therefore will
5991 * process SCTs when enabled.
5993 if (s->ct_validation_callback == NULL || cert == NULL ||
5994 s->verify_result != X509_V_OK ||
5995 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5999 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6000 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6002 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6003 switch (dane->mtlsa->usage) {
6004 case DANETLS_USAGE_DANE_TA:
6005 case DANETLS_USAGE_DANE_EE:
6010 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6011 SSL_CONNECTION_GET_CTX(s)->propq);
6013 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6017 issuer = sk_X509_value(s->verified_chain, 1);
6018 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6019 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6020 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6021 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6022 CT_POLICY_EVAL_CTX_set_time(
6023 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6025 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6028 * This function returns success (> 0) only when all the SCTs are valid, 0
6029 * when some are invalid, and < 0 on various internal errors (out of
6030 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6031 * reason to abort the handshake, that decision is up to the callback.
6032 * Therefore, we error out only in the unexpected case that the return
6033 * value is negative.
6035 * XXX: One might well argue that the return value of this function is an
6036 * unfortunate design choice. Its job is only to determine the validation
6037 * status of each of the provided SCTs. So long as it correctly separates
6038 * the wheat from the chaff it should return success. Failure in this case
6039 * ought to correspond to an inability to carry out its duties.
6041 if (SCT_LIST_validate(scts, ctx) < 0) {
6042 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6046 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6048 ret = 0; /* This function returns 0 on failure */
6050 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6053 CT_POLICY_EVAL_CTX_free(ctx);
6055 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6056 * failure return code here. Also the application may wish the complete
6057 * the handshake, and then disconnect cleanly at a higher layer, after
6058 * checking the verification status of the completed connection.
6060 * We therefore force a certificate verification failure which will be
6061 * visible via SSL_get_verify_result() and cached as part of any resumed
6064 * Note: the permissive callback is for information gathering only, always
6065 * returns success, and does not affect verification status. Only the
6066 * strict callback or a custom application-specified callback can trigger
6067 * connection failure or record a verification error.
6070 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6074 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6076 switch (validation_mode) {
6078 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6080 case SSL_CT_VALIDATION_PERMISSIVE:
6081 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6082 case SSL_CT_VALIDATION_STRICT:
6083 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6087 int SSL_enable_ct(SSL *s, int validation_mode)
6089 switch (validation_mode) {
6091 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6093 case SSL_CT_VALIDATION_PERMISSIVE:
6094 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6095 case SSL_CT_VALIDATION_STRICT:
6096 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6100 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6102 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6105 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6107 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6110 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6112 CTLOG_STORE_free(ctx->ctlog_store);
6113 ctx->ctlog_store = logs;
6116 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6118 return ctx->ctlog_store;
6121 #endif /* OPENSSL_NO_CT */
6123 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6126 c->client_hello_cb = cb;
6127 c->client_hello_cb_arg = arg;
6130 int SSL_client_hello_isv2(SSL *s)
6132 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6137 if (sc->clienthello == NULL)
6139 return sc->clienthello->isv2;
6142 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6144 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6149 if (sc->clienthello == NULL)
6151 return sc->clienthello->legacy_version;
6154 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6156 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6161 if (sc->clienthello == NULL)
6164 *out = sc->clienthello->random;
6165 return SSL3_RANDOM_SIZE;
6168 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6170 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6175 if (sc->clienthello == NULL)
6178 *out = sc->clienthello->session_id;
6179 return sc->clienthello->session_id_len;
6182 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6184 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6189 if (sc->clienthello == NULL)
6192 *out = PACKET_data(&sc->clienthello->ciphersuites);
6193 return PACKET_remaining(&sc->clienthello->ciphersuites);
6196 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6198 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6203 if (sc->clienthello == NULL)
6206 *out = sc->clienthello->compressions;
6207 return sc->clienthello->compressions_len;
6210 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6215 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6220 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6222 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6223 ext = sc->clienthello->pre_proc_exts + i;
6232 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6233 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6236 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6237 ext = sc->clienthello->pre_proc_exts + i;
6239 if (ext->received_order >= num)
6241 present[ext->received_order] = ext->type;
6248 OPENSSL_free(present);
6252 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6256 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6261 if (sc->clienthello == NULL || num_exts == NULL)
6263 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6264 ext = sc->clienthello->pre_proc_exts + i;
6276 if (*num_exts < num)
6278 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6279 ext = sc->clienthello->pre_proc_exts + i;
6281 if (ext->received_order >= num)
6283 exts[ext->received_order] = ext->type;
6290 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6295 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6300 if (sc->clienthello == NULL)
6302 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6303 r = sc->clienthello->pre_proc_exts + i;
6304 if (r->present && r->type == type) {
6306 *out = PACKET_data(&r->data);
6308 *outlen = PACKET_remaining(&r->data);
6315 int SSL_free_buffers(SSL *ssl)
6318 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6325 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6328 RECORD_LAYER_release(rl);
6332 int SSL_alloc_buffers(SSL *ssl)
6334 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6339 return ssl3_setup_buffers(sc);
6342 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6344 ctx->keylog_callback = cb;
6347 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6349 return ctx->keylog_callback;
6352 static int nss_keylog_int(const char *prefix,
6354 const uint8_t *parameter_1,
6355 size_t parameter_1_len,
6356 const uint8_t *parameter_2,
6357 size_t parameter_2_len)
6360 char *cursor = NULL;
6364 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6366 if (sctx->keylog_callback == NULL)
6370 * Our output buffer will contain the following strings, rendered with
6371 * space characters in between, terminated by a NULL character: first the
6372 * prefix, then the first parameter, then the second parameter. The
6373 * meaning of each parameter depends on the specific key material being
6374 * logged. Note that the first and second parameters are encoded in
6375 * hexadecimal, so we need a buffer that is twice their lengths.
6377 prefix_len = strlen(prefix);
6378 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6379 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6380 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6384 strcpy(cursor, prefix);
6385 cursor += prefix_len;
6388 for (i = 0; i < parameter_1_len; i++) {
6389 sprintf(cursor, "%02x", parameter_1[i]);
6394 for (i = 0; i < parameter_2_len; i++) {
6395 sprintf(cursor, "%02x", parameter_2[i]);
6400 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6401 OPENSSL_clear_free(out, out_len);
6406 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6407 const uint8_t *encrypted_premaster,
6408 size_t encrypted_premaster_len,
6409 const uint8_t *premaster,
6410 size_t premaster_len)
6412 if (encrypted_premaster_len < 8) {
6413 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6417 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6418 return nss_keylog_int("RSA",
6420 encrypted_premaster,
6426 int ssl_log_secret(SSL_CONNECTION *sc,
6428 const uint8_t *secret,
6431 return nss_keylog_int(label,
6433 sc->s3.client_random,
6439 #define SSLV2_CIPHER_LEN 3
6441 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6445 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6447 if (PACKET_remaining(cipher_suites) == 0) {
6448 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6452 if (PACKET_remaining(cipher_suites) % n != 0) {
6453 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6457 OPENSSL_free(s->s3.tmp.ciphers_raw);
6458 s->s3.tmp.ciphers_raw = NULL;
6459 s->s3.tmp.ciphers_rawlen = 0;
6462 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6463 PACKET sslv2ciphers = *cipher_suites;
6464 unsigned int leadbyte;
6468 * We store the raw ciphers list in SSLv3+ format so we need to do some
6469 * preprocessing to convert the list first. If there are any SSLv2 only
6470 * ciphersuites with a non-zero leading byte then we are going to
6471 * slightly over allocate because we won't store those. But that isn't a
6474 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6475 s->s3.tmp.ciphers_raw = raw;
6477 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6480 for (s->s3.tmp.ciphers_rawlen = 0;
6481 PACKET_remaining(&sslv2ciphers) > 0;
6482 raw += TLS_CIPHER_LEN) {
6483 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6485 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6488 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6489 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6490 OPENSSL_free(s->s3.tmp.ciphers_raw);
6491 s->s3.tmp.ciphers_raw = NULL;
6492 s->s3.tmp.ciphers_rawlen = 0;
6496 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6498 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6499 &s->s3.tmp.ciphers_rawlen)) {
6500 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6506 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6507 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6508 STACK_OF(SSL_CIPHER) **scsvs)
6511 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6516 if (!PACKET_buf_init(&pkt, bytes, len))
6518 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6521 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6522 STACK_OF(SSL_CIPHER) **skp,
6523 STACK_OF(SSL_CIPHER) **scsvs_out,
6524 int sslv2format, int fatal)
6526 const SSL_CIPHER *c;
6527 STACK_OF(SSL_CIPHER) *sk = NULL;
6528 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6530 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6531 unsigned char cipher[SSLV2_CIPHER_LEN];
6533 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6535 if (PACKET_remaining(cipher_suites) == 0) {
6537 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6539 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6543 if (PACKET_remaining(cipher_suites) % n != 0) {
6545 SSLfatal(s, SSL_AD_DECODE_ERROR,
6546 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6548 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6552 sk = sk_SSL_CIPHER_new_null();
6553 scsvs = sk_SSL_CIPHER_new_null();
6554 if (sk == NULL || scsvs == NULL) {
6556 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6558 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6562 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6564 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6565 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6566 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6568 if (sslv2format && cipher[0] != '\0')
6571 /* For SSLv2-compat, ignore leading 0-byte. */
6572 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6574 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6575 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6577 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6579 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6584 if (PACKET_remaining(cipher_suites) > 0) {
6586 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6588 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6595 sk_SSL_CIPHER_free(sk);
6596 if (scsvs_out != NULL)
6599 sk_SSL_CIPHER_free(scsvs);
6602 sk_SSL_CIPHER_free(sk);
6603 sk_SSL_CIPHER_free(scsvs);
6607 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6609 ctx->max_early_data = max_early_data;
6614 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6616 return ctx->max_early_data;
6619 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6621 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6626 sc->max_early_data = max_early_data;
6631 uint32_t SSL_get_max_early_data(const SSL *s)
6633 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6638 return sc->max_early_data;
6641 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6643 ctx->recv_max_early_data = recv_max_early_data;
6648 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6650 return ctx->recv_max_early_data;
6653 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6655 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6660 sc->recv_max_early_data = recv_max_early_data;
6665 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6667 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6672 return sc->recv_max_early_data;
6675 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6677 /* Return any active Max Fragment Len extension */
6678 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6679 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6681 /* return current SSL connection setting */
6682 return sc->max_send_fragment;
6685 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6687 /* Return a value regarding an active Max Fragment Len extension */
6688 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6689 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6690 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6692 /* else limit |split_send_fragment| to current |max_send_fragment| */
6693 if (sc->split_send_fragment > sc->max_send_fragment)
6694 return sc->max_send_fragment;
6696 /* return current SSL connection setting */
6697 return sc->split_send_fragment;
6700 int SSL_stateless(SSL *s)
6703 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6705 /* TODO(QUIC): This will need further work. */
6709 /* Ensure there is no state left over from a previous invocation */
6715 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6716 ret = SSL_accept(s);
6717 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6719 if (ret > 0 && sc->ext.cookieok)
6722 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6728 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6730 ctx->pha_enabled = val;
6733 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6735 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6740 sc->pha_enabled = val;
6743 int SSL_verify_client_post_handshake(SSL *ssl)
6745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6750 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6751 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6755 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6759 if (!SSL_is_init_finished(ssl)) {
6760 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6764 switch (sc->post_handshake_auth) {
6766 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6769 case SSL_PHA_EXT_SENT:
6770 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6772 case SSL_PHA_EXT_RECEIVED:
6774 case SSL_PHA_REQUEST_PENDING:
6775 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6777 case SSL_PHA_REQUESTED:
6778 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6782 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6784 /* checks verify_mode and algorithm_auth */
6785 if (!send_certificate_request(sc)) {
6786 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6787 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6791 ossl_statem_set_in_init(sc, 1);
6795 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6796 SSL_CTX_generate_session_ticket_fn gen_cb,
6797 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6800 ctx->generate_ticket_cb = gen_cb;
6801 ctx->decrypt_ticket_cb = dec_cb;
6802 ctx->ticket_cb_data = arg;
6806 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6807 SSL_allow_early_data_cb_fn cb,
6810 ctx->allow_early_data_cb = cb;
6811 ctx->allow_early_data_cb_data = arg;
6814 void SSL_set_allow_early_data_cb(SSL *s,
6815 SSL_allow_early_data_cb_fn cb,
6818 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6823 sc->allow_early_data_cb = cb;
6824 sc->allow_early_data_cb_data = arg;
6827 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6829 const char *properties)
6831 const EVP_CIPHER *ciph;
6833 ciph = tls_get_cipher_from_engine(nid);
6838 * If there is no engine cipher then we do an explicit fetch. This may fail
6839 * and that could be ok
6842 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6848 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6850 /* Don't up-ref an implicit EVP_CIPHER */
6851 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6855 * The cipher was explicitly fetched and therefore it is safe to cast
6858 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6861 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6866 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6868 * The cipher was explicitly fetched and therefore it is safe to cast
6871 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6875 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6877 const char *properties)
6881 md = tls_get_digest_from_engine(nid);
6885 /* Otherwise we do an explicit fetch */
6887 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6892 int ssl_evp_md_up_ref(const EVP_MD *md)
6894 /* Don't up-ref an implicit EVP_MD */
6895 if (EVP_MD_get0_provider(md) == NULL)
6899 * The digest was explicitly fetched and therefore it is safe to cast
6902 return EVP_MD_up_ref((EVP_MD *)md);
6905 void ssl_evp_md_free(const EVP_MD *md)
6910 if (EVP_MD_get0_provider(md) != NULL) {
6912 * The digest was explicitly fetched and therefore it is safe to cast
6915 EVP_MD_free((EVP_MD *)md);
6919 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6921 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6926 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6927 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6928 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6931 EVP_PKEY_free(sc->cert->dh_tmp);
6932 sc->cert->dh_tmp = dhpkey;
6936 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6938 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6939 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6940 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6943 EVP_PKEY_free(ctx->cert->dh_tmp);
6944 ctx->cert->dh_tmp = dhpkey;