2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
13 #include "ssl_local.h"
14 #include "internal/e_os.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include <openssl/trace.h>
24 #include <openssl/core_names.h>
25 #include "internal/cryptlib.h"
26 #include "internal/refcount.h"
27 #include "internal/ktls.h"
29 static int ssl_undefined_function_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
30 int t, SSL_MAC_BUF *mac, size_t macsize)
32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35 static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
36 unsigned char *s, int t)
38 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
41 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
42 unsigned char *s, size_t t, size_t *u)
44 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
47 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
49 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
52 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
53 size_t s, unsigned char *t)
55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58 static int ssl_undefined_function_6(int r)
60 return ssl_undefined_function(NULL);
63 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
64 size_t s, const char *t, size_t u,
65 const unsigned char *v, size_t w, int x)
67 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
70 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
72 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
75 SSL3_ENC_METHOD ssl3_undef_enc_method = {
76 ssl_undefined_function_1,
77 ssl_undefined_function_2,
78 ssl_undefined_function_8,
79 ssl_undefined_function_3,
80 ssl_undefined_function_4,
81 ssl_undefined_function_5,
82 NULL, /* client_finished_label */
83 0, /* client_finished_label_len */
84 NULL, /* server_finished_label */
85 0, /* server_finished_label_len */
86 ssl_undefined_function_6,
87 ssl_undefined_function_7,
90 struct ssl_async_args {
94 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
96 int (*func_read) (SSL *, void *, size_t, size_t *);
97 int (*func_write) (SSL *, const void *, size_t, size_t *);
98 int (*func_other) (SSL *);
102 static const struct {
108 DANETLS_MATCHING_FULL, 0, NID_undef
111 DANETLS_MATCHING_2256, 1, NID_sha256
114 DANETLS_MATCHING_2512, 2, NID_sha512
118 static int dane_ctx_enable(struct dane_ctx_st *dctx)
120 const EVP_MD **mdevp;
122 uint8_t mdmax = DANETLS_MATCHING_LAST;
123 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
126 if (dctx->mdevp != NULL)
129 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
130 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
132 if (mdord == NULL || mdevp == NULL) {
135 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
139 /* Install default entries */
140 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
143 if (dane_mds[i].nid == NID_undef ||
144 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
146 mdevp[dane_mds[i].mtype] = md;
147 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
157 static void dane_ctx_final(struct dane_ctx_st *dctx)
159 OPENSSL_free(dctx->mdevp);
162 OPENSSL_free(dctx->mdord);
167 static void tlsa_free(danetls_record *t)
171 OPENSSL_free(t->data);
172 EVP_PKEY_free(t->spki);
176 static void dane_final(SSL_DANE *dane)
178 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
181 OSSL_STACK_OF_X509_free(dane->certs);
184 X509_free(dane->mcert);
192 * dane_copy - Copy dane configuration, sans verification state.
194 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
199 if (!DANETLS_ENABLED(&from->dane))
202 num = sk_danetls_record_num(from->dane.trecs);
203 dane_final(&to->dane);
204 to->dane.flags = from->dane.flags;
205 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
206 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
208 if (to->dane.trecs == NULL) {
209 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
213 for (i = 0; i < num; ++i) {
214 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
216 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
217 t->selector, t->mtype, t->data, t->dlen) <= 0)
223 static int dane_mtype_set(struct dane_ctx_st *dctx,
224 const EVP_MD *md, uint8_t mtype, uint8_t ord)
228 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
229 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
233 if (mtype > dctx->mdmax) {
234 const EVP_MD **mdevp;
236 int n = ((int)mtype) + 1;
238 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
240 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
245 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
247 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
252 /* Zero-fill any gaps */
253 for (i = dctx->mdmax + 1; i < mtype; ++i) {
261 dctx->mdevp[mtype] = md;
262 /* Coerce ordinal of disabled matching types to 0 */
263 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
268 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
270 if (mtype > dane->dctx->mdmax)
272 return dane->dctx->mdevp[mtype];
275 static int dane_tlsa_add(SSL_DANE *dane,
278 uint8_t mtype, const unsigned char *data, size_t dlen)
281 const EVP_MD *md = NULL;
282 int ilen = (int)dlen;
286 if (dane->trecs == NULL) {
287 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
291 if (ilen < 0 || dlen != (size_t)ilen) {
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
296 if (usage > DANETLS_USAGE_LAST) {
297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
301 if (selector > DANETLS_SELECTOR_LAST) {
302 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
306 if (mtype != DANETLS_MATCHING_FULL) {
307 md = tlsa_md_get(dane, mtype);
309 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
314 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
315 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
319 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
323 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
324 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
329 t->selector = selector;
331 t->data = OPENSSL_malloc(dlen);
332 if (t->data == NULL) {
334 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
337 memcpy(t->data, data, dlen);
340 /* Validate and cache full certificate or public key */
341 if (mtype == DANETLS_MATCHING_FULL) {
342 const unsigned char *p = data;
344 EVP_PKEY *pkey = NULL;
347 case DANETLS_SELECTOR_CERT:
348 if (!d2i_X509(&cert, &p, ilen) || p < data ||
349 dlen != (size_t)(p - data)) {
351 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
354 if (X509_get0_pubkey(cert) == NULL) {
356 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
360 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
366 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
367 * records that contain full certificates of trust-anchors that are
368 * not present in the wire chain. For usage PKIX-TA(0), we augment
369 * the chain with untrusted Full(0) certificates from DNS, in case
370 * they are missing from the chain.
372 if ((dane->certs == NULL &&
373 (dane->certs = sk_X509_new_null()) == NULL) ||
374 !sk_X509_push(dane->certs, cert)) {
375 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
382 case DANETLS_SELECTOR_SPKI:
383 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
384 dlen != (size_t)(p - data)) {
386 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
391 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
392 * records that contain full bare keys of trust-anchors that are
393 * not present in the wire chain.
395 if (usage == DANETLS_USAGE_DANE_TA)
404 * Find the right insertion point for the new record.
406 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
407 * they can be processed first, as they require no chain building, and no
408 * expiration or hostname checks. Because DANE-EE(3) is numerically
409 * largest, this is accomplished via descending sort by "usage".
411 * We also sort in descending order by matching ordinal to simplify
412 * the implementation of digest agility in the verification code.
414 * The choice of order for the selector is not significant, so we
415 * use the same descending order for consistency.
417 num = sk_danetls_record_num(dane->trecs);
418 for (i = 0; i < num; ++i) {
419 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
421 if (rec->usage > usage)
423 if (rec->usage < usage)
425 if (rec->selector > selector)
427 if (rec->selector < selector)
429 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
434 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
436 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
439 dane->umask |= DANETLS_USAGE_BIT(usage);
445 * Return 0 if there is only one version configured and it was disabled
446 * at configure time. Return 1 otherwise.
448 static int ssl_check_allowed_versions(int min_version, int max_version)
450 int minisdtls = 0, maxisdtls = 0;
452 /* Figure out if we're doing DTLS versions or TLS versions */
453 if (min_version == DTLS1_BAD_VER
454 || min_version >> 8 == DTLS1_VERSION_MAJOR)
456 if (max_version == DTLS1_BAD_VER
457 || max_version >> 8 == DTLS1_VERSION_MAJOR)
459 /* A wildcard version of 0 could be DTLS or TLS. */
460 if ((minisdtls && !maxisdtls && max_version != 0)
461 || (maxisdtls && !minisdtls && min_version != 0)) {
462 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
466 if (minisdtls || maxisdtls) {
467 /* Do DTLS version checks. */
468 if (min_version == 0)
469 /* Ignore DTLS1_BAD_VER */
470 min_version = DTLS1_VERSION;
471 if (max_version == 0)
472 max_version = DTLS1_2_VERSION;
473 #ifdef OPENSSL_NO_DTLS1_2
474 if (max_version == DTLS1_2_VERSION)
475 max_version = DTLS1_VERSION;
477 #ifdef OPENSSL_NO_DTLS1
478 if (min_version == DTLS1_VERSION)
479 min_version = DTLS1_2_VERSION;
481 /* Done massaging versions; do the check. */
483 #ifdef OPENSSL_NO_DTLS1
484 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
485 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
487 #ifdef OPENSSL_NO_DTLS1_2
488 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
489 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
494 /* Regular TLS version checks. */
495 if (min_version == 0)
496 min_version = SSL3_VERSION;
497 if (max_version == 0)
498 max_version = TLS1_3_VERSION;
499 #ifdef OPENSSL_NO_TLS1_3
500 if (max_version == TLS1_3_VERSION)
501 max_version = TLS1_2_VERSION;
503 #ifdef OPENSSL_NO_TLS1_2
504 if (max_version == TLS1_2_VERSION)
505 max_version = TLS1_1_VERSION;
507 #ifdef OPENSSL_NO_TLS1_1
508 if (max_version == TLS1_1_VERSION)
509 max_version = TLS1_VERSION;
511 #ifdef OPENSSL_NO_TLS1
512 if (max_version == TLS1_VERSION)
513 max_version = SSL3_VERSION;
515 #ifdef OPENSSL_NO_SSL3
516 if (min_version == SSL3_VERSION)
517 min_version = TLS1_VERSION;
519 #ifdef OPENSSL_NO_TLS1
520 if (min_version == TLS1_VERSION)
521 min_version = TLS1_1_VERSION;
523 #ifdef OPENSSL_NO_TLS1_1
524 if (min_version == TLS1_1_VERSION)
525 min_version = TLS1_2_VERSION;
527 #ifdef OPENSSL_NO_TLS1_2
528 if (min_version == TLS1_2_VERSION)
529 min_version = TLS1_3_VERSION;
531 /* Done massaging versions; do the check. */
533 #ifdef OPENSSL_NO_SSL3
534 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
536 #ifdef OPENSSL_NO_TLS1
537 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
539 #ifdef OPENSSL_NO_TLS1_1
540 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
542 #ifdef OPENSSL_NO_TLS1_2
543 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
545 #ifdef OPENSSL_NO_TLS1_3
546 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
554 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
556 * Define a VPROC function for HP NonStop build ssl library.
557 * This is used by platform version identification tools.
558 * Do not inline this procedure or make it static.
560 # define OPENSSL_VPROC_STRING_(x) x##_SSL
561 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
562 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
563 void OPENSSL_VPROC_FUNC(void) {}
567 static void clear_ciphers(SSL_CONNECTION *s)
569 /* clear the current cipher */
570 ssl_clear_cipher_ctx(s);
571 ssl_clear_hash_ctx(&s->read_hash);
572 ssl_clear_hash_ctx(&s->write_hash);
575 int SSL_clear(SSL *s)
577 if (s->method == NULL) {
578 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
582 return s->method->ssl_reset(s);
585 int ossl_ssl_connection_reset(SSL *s)
587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
592 if (ssl_clear_bad_session(sc)) {
593 SSL_SESSION_free(sc->session);
596 SSL_SESSION_free(sc->psksession);
597 sc->psksession = NULL;
598 OPENSSL_free(sc->psksession_id);
599 sc->psksession_id = NULL;
600 sc->psksession_id_len = 0;
601 sc->hello_retry_request = 0;
602 sc->sent_tickets = 0;
608 if (sc->renegotiate) {
609 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
613 ossl_statem_clear(sc);
615 /* TODO(QUIC): Version handling not yet clear */
616 sc->version = s->method->version;
617 sc->client_version = sc->version;
618 sc->rwstate = SSL_NOTHING;
620 BUF_MEM_free(sc->init_buf);
623 sc->first_packet = 0;
625 sc->key_update = SSL_KEY_UPDATE_NONE;
627 EVP_MD_CTX_free(sc->pha_dgst);
630 /* Reset DANE verification result state */
633 X509_free(sc->dane.mcert);
634 sc->dane.mcert = NULL;
635 sc->dane.mtlsa = NULL;
637 /* Clear the verification result peername */
638 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
640 /* Clear any shared connection state */
641 OPENSSL_free(sc->shared_sigalgs);
642 sc->shared_sigalgs = NULL;
643 sc->shared_sigalgslen = 0;
646 * Check to see if we were changed into a different method, if so, revert
649 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
650 s->method->ssl_deinit(s);
651 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
652 if (!s->method->ssl_init(s))
655 if (!s->method->ssl_clear(s))
659 RECORD_LAYER_clear(&sc->rlayer);
660 BIO_free(sc->rlayer.rrlnext);
661 sc->rlayer.rrlnext = NULL;
663 if (!ssl_set_new_record_layer(sc,
664 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
665 OSSL_RECORD_DIRECTION_READ,
666 OSSL_RECORD_PROTECTION_LEVEL_NONE,
667 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
668 NID_undef, NULL, NULL)) {
669 /* SSLfatal already called */
672 if (!ssl_set_new_record_layer(sc,
673 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
674 OSSL_RECORD_DIRECTION_WRITE,
675 OSSL_RECORD_PROTECTION_LEVEL_NONE,
676 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
677 NID_undef, NULL, NULL)) {
678 /* SSLfatal already called */
685 #ifndef OPENSSL_NO_DEPRECATED_3_0
686 /** Used to change an SSL_CTXs default SSL method type */
687 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
689 STACK_OF(SSL_CIPHER) *sk;
693 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
694 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
697 sk = ssl_create_cipher_list(ctx,
698 ctx->tls13_ciphersuites,
700 &(ctx->cipher_list_by_id),
701 OSSL_default_cipher_list(), ctx->cert);
702 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
703 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
710 SSL *SSL_new(SSL_CTX *ctx)
713 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
716 if (ctx->method == NULL) {
717 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
720 return ctx->method->ssl_new(ctx);
723 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
728 ssl->lock = CRYPTO_THREAD_lock_new();
729 if (ssl->lock == NULL)
735 ssl->method = ctx->method;
737 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
743 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
748 s = OPENSSL_zalloc(sizeof(*s));
753 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
759 #ifndef OPENSSL_NO_QUIC
760 /* set the parent (user visible) ssl to self */
764 RECORD_LAYER_init(&s->rlayer, s);
766 s->options = ctx->options;
767 s->dane.flags = ctx->dane.flags;
768 s->min_proto_version = ctx->min_proto_version;
769 s->max_proto_version = ctx->max_proto_version;
771 s->max_cert_list = ctx->max_cert_list;
772 s->max_early_data = ctx->max_early_data;
773 s->recv_max_early_data = ctx->recv_max_early_data;
774 s->num_tickets = ctx->num_tickets;
775 s->pha_enabled = ctx->pha_enabled;
777 /* Shallow copy of the ciphersuites stack */
778 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
779 if (s->tls13_ciphersuites == NULL)
783 * Earlier library versions used to copy the pointer to the CERT, not
784 * its contents; only when setting new parameters for the per-SSL
785 * copy, ssl_cert_new would be called (and the direct reference to
786 * the per-SSL_CTX settings would be lost, but those still were
787 * indirectly accessed for various purposes, and for that reason they
788 * used to be known as s->ctx->default_cert). Now we don't look at the
789 * SSL_CTX's CERT after having duplicated it once.
791 s->cert = ssl_cert_dup(ctx->cert);
795 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
796 s->msg_callback = ctx->msg_callback;
797 s->msg_callback_arg = ctx->msg_callback_arg;
798 s->verify_mode = ctx->verify_mode;
799 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
800 s->record_padding_cb = ctx->record_padding_cb;
801 s->record_padding_arg = ctx->record_padding_arg;
802 s->block_padding = ctx->block_padding;
803 s->sid_ctx_length = ctx->sid_ctx_length;
804 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
806 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
807 s->verify_callback = ctx->default_verify_callback;
808 s->generate_session_id = ctx->generate_session_id;
810 s->param = X509_VERIFY_PARAM_new();
811 if (s->param == NULL)
813 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
814 s->quiet_shutdown = ctx->quiet_shutdown;
816 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
817 s->max_send_fragment = ctx->max_send_fragment;
818 s->split_send_fragment = ctx->split_send_fragment;
819 s->max_pipelines = ctx->max_pipelines;
820 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
823 s->ext.debug_arg = NULL;
824 s->ext.ticket_expected = 0;
825 s->ext.status_type = ctx->ext.status_type;
826 s->ext.status_expected = 0;
827 s->ext.ocsp.ids = NULL;
828 s->ext.ocsp.exts = NULL;
829 s->ext.ocsp.resp = NULL;
830 s->ext.ocsp.resp_len = 0;
832 s->session_ctx = ctx;
833 if (ctx->ext.ecpointformats) {
834 s->ext.ecpointformats =
835 OPENSSL_memdup(ctx->ext.ecpointformats,
836 ctx->ext.ecpointformats_len);
837 if (!s->ext.ecpointformats) {
838 s->ext.ecpointformats_len = 0;
841 s->ext.ecpointformats_len =
842 ctx->ext.ecpointformats_len;
844 if (ctx->ext.supportedgroups) {
845 s->ext.supportedgroups =
846 OPENSSL_memdup(ctx->ext.supportedgroups,
847 ctx->ext.supportedgroups_len
848 * sizeof(*ctx->ext.supportedgroups));
849 if (!s->ext.supportedgroups) {
850 s->ext.supportedgroups_len = 0;
853 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
856 #ifndef OPENSSL_NO_NEXTPROTONEG
860 if (ctx->ext.alpn != NULL) {
861 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
862 if (s->ext.alpn == NULL) {
866 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
867 s->ext.alpn_len = ctx->ext.alpn_len;
870 s->verified_chain = NULL;
871 s->verify_result = X509_V_OK;
873 s->default_passwd_callback = ctx->default_passwd_callback;
874 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
876 s->key_update = SSL_KEY_UPDATE_NONE;
878 s->allow_early_data_cb = ctx->allow_early_data_cb;
879 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
881 if (!ssl->method->ssl_init(ssl))
884 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
889 #ifndef OPENSSL_NO_PSK
890 s->psk_client_callback = ctx->psk_client_callback;
891 s->psk_server_callback = ctx->psk_server_callback;
893 s->psk_find_session_cb = ctx->psk_find_session_cb;
894 s->psk_use_session_cb = ctx->psk_use_session_cb;
896 s->async_cb = ctx->async_cb;
897 s->async_cb_arg = ctx->async_cb_arg;
901 #ifndef OPENSSL_NO_CT
902 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
903 ctx->ct_validation_callback_arg))
910 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
914 int SSL_is_dtls(const SSL *s)
916 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
921 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
924 int SSL_up_ref(SSL *s)
928 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
931 REF_PRINT_COUNT("SSL", s);
932 REF_ASSERT_ISNT(i < 2);
933 return ((i > 1) ? 1 : 0);
936 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
937 unsigned int sid_ctx_len)
939 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
940 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
943 ctx->sid_ctx_length = sid_ctx_len;
944 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
949 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
950 unsigned int sid_ctx_len)
952 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
957 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
958 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
961 sc->sid_ctx_length = sid_ctx_len;
962 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
967 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
969 if (!CRYPTO_THREAD_write_lock(ctx->lock))
971 ctx->generate_session_id = cb;
972 CRYPTO_THREAD_unlock(ctx->lock);
976 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
978 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
980 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
982 sc->generate_session_id = cb;
983 CRYPTO_THREAD_unlock(ssl->lock);
987 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
991 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
992 * we can "construct" a session to give us the desired check - i.e. to
993 * find if there's a session in the hash table that would conflict with
994 * any new session built out of this id/id_len and the ssl_version in use
998 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1000 if (sc == NULL || id_len > sizeof(r.session_id))
1003 r.ssl_version = sc->version;
1004 r.session_id_length = id_len;
1005 memcpy(r.session_id, id, id_len);
1007 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1009 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1010 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1014 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1016 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1019 int SSL_set_purpose(SSL *s, int purpose)
1021 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1026 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1029 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1031 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1034 int SSL_set_trust(SSL *s, int trust)
1036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1041 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1044 int SSL_set1_host(SSL *s, const char *hostname)
1046 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1051 /* If a hostname is provided and parses as an IP address,
1052 * treat it as such. */
1053 if (hostname != NULL
1054 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1057 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1060 int SSL_add1_host(SSL *s, const char *hostname)
1062 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1067 /* If a hostname is provided and parses as an IP address,
1068 * treat it as such. */
1071 ASN1_OCTET_STRING *ip;
1074 ip = a2i_IPADDRESS(hostname);
1076 /* We didn't want it; only to check if it *is* an IP address */
1077 ASN1_OCTET_STRING_free(ip);
1079 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1082 OPENSSL_free(old_ip);
1083 /* There can be only one IP address */
1087 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1091 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1094 void SSL_set_hostflags(SSL *s, unsigned int flags)
1096 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1101 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1104 const char *SSL_get0_peername(SSL *s)
1106 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1111 return X509_VERIFY_PARAM_get0_peername(sc->param);
1114 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1116 return dane_ctx_enable(&ctx->dane);
1119 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1121 unsigned long orig = ctx->dane.flags;
1123 ctx->dane.flags |= flags;
1127 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1129 unsigned long orig = ctx->dane.flags;
1131 ctx->dane.flags &= ~flags;
1135 int SSL_dane_enable(SSL *s, const char *basedomain)
1138 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1144 if (s->ctx->dane.mdmax == 0) {
1145 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1148 if (dane->trecs != NULL) {
1149 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1154 * Default SNI name. This rejects empty names, while set1_host below
1155 * accepts them and disables host name checks. To avoid side-effects with
1156 * invalid input, set the SNI name first.
1158 if (sc->ext.hostname == NULL) {
1159 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1160 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1165 /* Primary RFC6125 reference identifier */
1166 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1167 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1173 dane->dctx = &s->ctx->dane;
1174 dane->trecs = sk_danetls_record_new_null();
1176 if (dane->trecs == NULL) {
1177 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1183 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1186 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1191 orig = sc->dane.flags;
1193 sc->dane.flags |= flags;
1197 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1200 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1205 orig = sc->dane.flags;
1207 sc->dane.flags &= ~flags;
1211 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1214 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1221 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1225 *mcert = dane->mcert;
1227 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1232 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1233 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1236 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1243 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1247 *usage = dane->mtlsa->usage;
1249 *selector = dane->mtlsa->selector;
1251 *mtype = dane->mtlsa->mtype;
1253 *data = dane->mtlsa->data;
1255 *dlen = dane->mtlsa->dlen;
1260 SSL_DANE *SSL_get0_dane(SSL *s)
1262 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1270 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1271 uint8_t mtype, const unsigned char *data, size_t dlen)
1273 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1278 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1281 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1284 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1287 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1289 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1292 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1294 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1299 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1302 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1307 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1309 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1317 void SSL_certs_clear(SSL *s)
1319 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1324 ssl_cert_clear_certs(sc->cert);
1327 void SSL_free(SSL *s)
1333 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1334 REF_PRINT_COUNT("SSL", s);
1337 REF_ASSERT_ISNT(i < 0);
1339 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1341 if (s->method != NULL)
1342 s->method->ssl_free(s);
1344 SSL_CTX_free(s->ctx);
1345 CRYPTO_THREAD_lock_free(s->lock);
1350 void ossl_ssl_connection_free(SSL *ssl)
1354 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1358 X509_VERIFY_PARAM_free(s->param);
1359 dane_final(&s->dane);
1361 /* Ignore return value */
1362 ssl_free_wbio_buffer(s);
1364 BIO_free_all(s->wbio);
1366 BIO_free_all(s->rbio);
1369 RECORD_LAYER_clear(&s->rlayer);
1371 BUF_MEM_free(s->init_buf);
1373 /* add extra stuff */
1374 sk_SSL_CIPHER_free(s->cipher_list);
1375 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1376 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1377 sk_SSL_CIPHER_free(s->peer_ciphers);
1379 /* Make the next call work :-) */
1380 if (s->session != NULL) {
1381 ssl_clear_bad_session(s);
1382 SSL_SESSION_free(s->session);
1384 SSL_SESSION_free(s->psksession);
1385 OPENSSL_free(s->psksession_id);
1389 ssl_cert_free(s->cert);
1390 OPENSSL_free(s->shared_sigalgs);
1391 /* Free up if allocated */
1393 OPENSSL_free(s->ext.hostname);
1394 SSL_CTX_free(s->session_ctx);
1395 OPENSSL_free(s->ext.ecpointformats);
1396 OPENSSL_free(s->ext.peer_ecpointformats);
1397 OPENSSL_free(s->ext.supportedgroups);
1398 OPENSSL_free(s->ext.peer_supportedgroups);
1399 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1400 #ifndef OPENSSL_NO_OCSP
1401 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1403 #ifndef OPENSSL_NO_CT
1404 SCT_LIST_free(s->scts);
1405 OPENSSL_free(s->ext.scts);
1407 OPENSSL_free(s->ext.ocsp.resp);
1408 OPENSSL_free(s->ext.alpn);
1409 OPENSSL_free(s->ext.tls13_cookie);
1410 if (s->clienthello != NULL)
1411 OPENSSL_free(s->clienthello->pre_proc_exts);
1412 OPENSSL_free(s->clienthello);
1413 OPENSSL_free(s->pha_context);
1414 EVP_MD_CTX_free(s->pha_dgst);
1416 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1417 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1419 OSSL_STACK_OF_X509_free(s->verified_chain);
1421 if (ssl->method != NULL)
1422 ssl->method->ssl_deinit(ssl);
1424 ASYNC_WAIT_CTX_free(s->waitctx);
1426 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1427 OPENSSL_free(s->ext.npn);
1430 #ifndef OPENSSL_NO_SRTP
1431 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1435 void SSL_set0_rbio(SSL *s, BIO *rbio)
1437 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1442 BIO_free_all(sc->rbio);
1444 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1447 void SSL_set0_wbio(SSL *s, BIO *wbio)
1449 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1455 * If the output buffering BIO is still in place, remove it
1457 if (sc->bbio != NULL)
1458 sc->wbio = BIO_pop(sc->wbio);
1460 BIO_free_all(sc->wbio);
1463 /* Re-attach |bbio| to the new |wbio|. */
1464 if (sc->bbio != NULL)
1465 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1467 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1470 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1473 * For historical reasons, this function has many different cases in
1474 * ownership handling.
1477 /* If nothing has changed, do nothing */
1478 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1482 * If the two arguments are equal then one fewer reference is granted by the
1483 * caller than we want to take
1485 if (rbio != NULL && rbio == wbio)
1489 * If only the wbio is changed only adopt one reference.
1491 if (rbio == SSL_get_rbio(s)) {
1492 SSL_set0_wbio(s, wbio);
1496 * There is an asymmetry here for historical reasons. If only the rbio is
1497 * changed AND the rbio and wbio were originally different, then we only
1498 * adopt one reference.
1500 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1501 SSL_set0_rbio(s, rbio);
1505 /* Otherwise, adopt both references. */
1506 SSL_set0_rbio(s, rbio);
1507 SSL_set0_wbio(s, wbio);
1510 BIO *SSL_get_rbio(const SSL *s)
1512 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1520 BIO *SSL_get_wbio(const SSL *s)
1522 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1527 if (sc->bbio != NULL) {
1529 * If |bbio| is active, the true caller-configured BIO is its
1532 return BIO_next(sc->bbio);
1537 int SSL_get_fd(const SSL *s)
1539 return SSL_get_rfd(s);
1542 int SSL_get_rfd(const SSL *s)
1547 b = SSL_get_rbio(s);
1548 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1550 BIO_get_fd(r, &ret);
1554 int SSL_get_wfd(const SSL *s)
1559 b = SSL_get_wbio(s);
1560 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1562 BIO_get_fd(r, &ret);
1566 #ifndef OPENSSL_NO_SOCK
1567 int SSL_set_fd(SSL *s, int fd)
1572 bio = BIO_new(BIO_s_socket());
1575 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1578 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1579 SSL_set_bio(s, bio, bio);
1580 #ifndef OPENSSL_NO_KTLS
1582 * The new socket is created successfully regardless of ktls_enable.
1583 * ktls_enable doesn't change any functionality of the socket, except
1584 * changing the setsockopt to enable the processing of ktls_start.
1585 * Thus, it is not a problem to call it for non-TLS sockets.
1588 #endif /* OPENSSL_NO_KTLS */
1594 int SSL_set_wfd(SSL *s, int fd)
1596 BIO *rbio = SSL_get_rbio(s);
1598 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1599 || (int)BIO_get_fd(rbio, NULL) != fd) {
1600 BIO *bio = BIO_new(BIO_s_socket());
1603 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1606 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1607 SSL_set0_wbio(s, bio);
1608 #ifndef OPENSSL_NO_KTLS
1610 * The new socket is created successfully regardless of ktls_enable.
1611 * ktls_enable doesn't change any functionality of the socket, except
1612 * changing the setsockopt to enable the processing of ktls_start.
1613 * Thus, it is not a problem to call it for non-TLS sockets.
1616 #endif /* OPENSSL_NO_KTLS */
1619 SSL_set0_wbio(s, rbio);
1624 int SSL_set_rfd(SSL *s, int fd)
1626 BIO *wbio = SSL_get_wbio(s);
1628 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1629 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1630 BIO *bio = BIO_new(BIO_s_socket());
1633 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1636 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1637 SSL_set0_rbio(s, bio);
1640 SSL_set0_rbio(s, wbio);
1647 /* return length of latest Finished message we sent, copy to 'buf' */
1648 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1651 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1656 ret = sc->s3.tmp.finish_md_len;
1659 memcpy(buf, sc->s3.tmp.finish_md, count);
1663 /* return length of latest Finished message we expected, copy to 'buf' */
1664 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1667 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1672 ret = sc->s3.tmp.peer_finish_md_len;
1675 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1679 int SSL_get_verify_mode(const SSL *s)
1681 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1686 return sc->verify_mode;
1689 int SSL_get_verify_depth(const SSL *s)
1691 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1696 return X509_VERIFY_PARAM_get_depth(sc->param);
1699 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1700 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1705 return sc->verify_callback;
1708 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1710 return ctx->verify_mode;
1713 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1715 return X509_VERIFY_PARAM_get_depth(ctx->param);
1718 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1719 return ctx->default_verify_callback;
1722 void SSL_set_verify(SSL *s, int mode,
1723 int (*callback) (int ok, X509_STORE_CTX *ctx))
1725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1730 sc->verify_mode = mode;
1731 if (callback != NULL)
1732 sc->verify_callback = callback;
1735 void SSL_set_verify_depth(SSL *s, int depth)
1737 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1742 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1745 void SSL_set_read_ahead(SSL *s, int yes)
1747 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1748 OSSL_PARAM options[2], *opts = options;
1753 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1755 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1756 &sc->rlayer.read_ahead);
1757 *opts = OSSL_PARAM_construct_end();
1759 /* Ignore return value */
1760 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1763 int SSL_get_read_ahead(const SSL *s)
1765 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1770 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1773 int SSL_pending(const SSL *s)
1775 size_t pending = s->method->ssl_pending(s);
1778 * SSL_pending cannot work properly if read-ahead is enabled
1779 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1780 * impossible to fix since SSL_pending cannot report errors that may be
1781 * observed while scanning the new data. (Note that SSL_pending() is
1782 * often used as a boolean value, so we'd better not return -1.)
1784 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1785 * we just return INT_MAX.
1787 return pending < INT_MAX ? (int)pending : INT_MAX;
1790 int SSL_has_pending(const SSL *s)
1793 * Similar to SSL_pending() but returns a 1 to indicate that we have
1794 * processed or unprocessed data available or 0 otherwise (as opposed to the
1795 * number of bytes available). Unlike SSL_pending() this will take into
1796 * account read_ahead data. A 1 return simply indicates that we have data.
1797 * That data may not result in any application data, or we may fail to parse
1798 * the records for some reason.
1800 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1802 /* Check buffered app data if any first */
1803 if (SSL_CONNECTION_IS_DTLS(sc)) {
1807 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1808 while ((item = pqueue_next(&iter)) != NULL) {
1810 if (rdata->length > 0)
1815 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1818 return RECORD_LAYER_read_pending(&sc->rlayer);
1821 X509 *SSL_get1_peer_certificate(const SSL *s)
1823 X509 *r = SSL_get0_peer_certificate(s);
1831 X509 *SSL_get0_peer_certificate(const SSL *s)
1833 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1838 if (sc->session == NULL)
1841 return sc->session->peer;
1844 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1847 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1852 if (sc->session == NULL)
1855 r = sc->session->peer_chain;
1858 * If we are a client, cert_chain includes the peer's own certificate; if
1859 * we are a server, it does not.
1866 * Now in theory, since the calling process own 't' it should be safe to
1867 * modify. We need to be able to read f without being hassled
1869 int SSL_copy_session_id(SSL *t, const SSL *f)
1872 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1873 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1874 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1876 if (tsc == NULL || fsc == NULL)
1879 /* Do we need to do SSL locking? */
1880 if (!SSL_set_session(t, SSL_get_session(f))) {
1885 * what if we are setup for one protocol version but want to talk another
1887 if (t->method != f->method) {
1888 t->method->ssl_deinit(t);
1889 t->method = f->method;
1890 if (t->method->ssl_init(t) == 0)
1894 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1895 ssl_cert_free(tsc->cert);
1896 tsc->cert = fsc->cert;
1897 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1904 /* Fix this so it checks all the valid key/cert options */
1905 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1907 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1908 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1911 if (ctx->cert->key->privatekey == NULL) {
1912 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1915 return X509_check_private_key
1916 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1919 /* Fix this function so that it takes an optional type parameter */
1920 int SSL_check_private_key(const SSL *ssl)
1922 const SSL_CONNECTION *sc;
1924 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1925 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1928 if (sc->cert->key->x509 == NULL) {
1929 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1932 if (sc->cert->key->privatekey == NULL) {
1933 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1936 return X509_check_private_key(sc->cert->key->x509,
1937 sc->cert->key->privatekey);
1940 int SSL_waiting_for_async(SSL *s)
1942 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1953 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1955 ASYNC_WAIT_CTX *ctx;
1956 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1961 if ((ctx = sc->waitctx) == NULL)
1963 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1966 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1967 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1969 ASYNC_WAIT_CTX *ctx;
1970 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1975 if ((ctx = sc->waitctx) == NULL)
1977 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1981 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1983 ctx->async_cb = callback;
1987 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1989 ctx->async_cb_arg = arg;
1993 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2000 sc->async_cb = callback;
2004 int SSL_set_async_callback_arg(SSL *s, void *arg)
2006 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2011 sc->async_cb_arg = arg;
2015 int SSL_get_async_status(SSL *s, int *status)
2017 ASYNC_WAIT_CTX *ctx;
2018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2023 if ((ctx = sc->waitctx) == NULL)
2025 *status = ASYNC_WAIT_CTX_get_status(ctx);
2029 int SSL_accept(SSL *s)
2031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2036 if (sc->handshake_func == NULL) {
2037 /* Not properly initialized yet */
2038 SSL_set_accept_state(s);
2041 return SSL_do_handshake(s);
2044 int SSL_connect(SSL *s)
2046 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2051 if (sc->handshake_func == NULL) {
2052 /* Not properly initialized yet */
2053 SSL_set_connect_state(s);
2056 return SSL_do_handshake(s);
2059 long SSL_get_default_timeout(const SSL *s)
2061 return (long int)ossl_time2seconds(s->method->get_timeout());
2064 static int ssl_async_wait_ctx_cb(void *arg)
2066 SSL *s = (SSL *)arg;
2067 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2072 return sc->async_cb(s, sc->async_cb_arg);
2075 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2076 int (*func) (void *))
2079 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2084 if (sc->waitctx == NULL) {
2085 sc->waitctx = ASYNC_WAIT_CTX_new();
2086 if (sc->waitctx == NULL)
2088 if (sc->async_cb != NULL
2089 && !ASYNC_WAIT_CTX_set_callback
2090 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2094 sc->rwstate = SSL_NOTHING;
2095 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2096 sizeof(struct ssl_async_args))) {
2098 sc->rwstate = SSL_NOTHING;
2099 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2102 sc->rwstate = SSL_ASYNC_PAUSED;
2105 sc->rwstate = SSL_ASYNC_NO_JOBS;
2111 sc->rwstate = SSL_NOTHING;
2112 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2113 /* Shouldn't happen */
2118 static int ssl_io_intern(void *vargs)
2120 struct ssl_async_args *args;
2126 args = (struct ssl_async_args *)vargs;
2130 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2133 switch (args->type) {
2135 return args->f.func_read(s, buf, num, &sc->asyncrw);
2137 return args->f.func_write(s, buf, num, &sc->asyncrw);
2139 return args->f.func_other(s);
2144 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2146 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2151 if (sc->handshake_func == NULL) {
2152 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2156 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2157 sc->rwstate = SSL_NOTHING;
2161 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2162 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2163 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2167 * If we are a client and haven't received the ServerHello etc then we
2170 ossl_statem_check_finish_init(sc, 0);
2172 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2173 struct ssl_async_args args;
2179 args.type = READFUNC;
2180 args.f.func_read = s->method->ssl_read;
2182 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2183 *readbytes = sc->asyncrw;
2186 return s->method->ssl_read(s, buf, num, readbytes);
2190 int SSL_read(SSL *s, void *buf, int num)
2196 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2200 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2203 * The cast is safe here because ret should be <= INT_MAX because num is
2207 ret = (int)readbytes;
2212 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2214 int ret = ssl_read_internal(s, buf, num, readbytes);
2221 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2224 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2226 /* TODO(QUIC): This will need special handling for QUIC */
2231 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2232 return SSL_READ_EARLY_DATA_ERROR;
2235 switch (sc->early_data_state) {
2236 case SSL_EARLY_DATA_NONE:
2237 if (!SSL_in_before(s)) {
2238 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2239 return SSL_READ_EARLY_DATA_ERROR;
2243 case SSL_EARLY_DATA_ACCEPT_RETRY:
2244 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2245 ret = SSL_accept(s);
2248 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2249 return SSL_READ_EARLY_DATA_ERROR;
2253 case SSL_EARLY_DATA_READ_RETRY:
2254 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2255 sc->early_data_state = SSL_EARLY_DATA_READING;
2256 ret = SSL_read_ex(s, buf, num, readbytes);
2258 * State machine will update early_data_state to
2259 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2262 if (ret > 0 || (ret <= 0 && sc->early_data_state
2263 != SSL_EARLY_DATA_FINISHED_READING)) {
2264 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2265 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2266 : SSL_READ_EARLY_DATA_ERROR;
2269 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2272 return SSL_READ_EARLY_DATA_FINISH;
2275 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2276 return SSL_READ_EARLY_DATA_ERROR;
2280 int SSL_get_early_data_status(const SSL *s)
2282 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2284 /* TODO(QUIC): This will need special handling for QUIC */
2288 return sc->ext.early_data;
2291 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2293 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2298 if (sc->handshake_func == NULL) {
2299 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2303 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2306 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2307 struct ssl_async_args args;
2313 args.type = READFUNC;
2314 args.f.func_read = s->method->ssl_peek;
2316 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2317 *readbytes = sc->asyncrw;
2320 return s->method->ssl_peek(s, buf, num, readbytes);
2324 int SSL_peek(SSL *s, void *buf, int num)
2330 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2334 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2337 * The cast is safe here because ret should be <= INT_MAX because num is
2341 ret = (int)readbytes;
2347 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2349 int ret = ssl_peek_internal(s, buf, num, readbytes);
2356 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2358 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2363 if (sc->handshake_func == NULL) {
2364 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2368 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2369 sc->rwstate = SSL_NOTHING;
2370 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2374 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2375 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2376 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2377 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2380 /* If we are a client and haven't sent the Finished we better do that */
2381 ossl_statem_check_finish_init(sc, 1);
2383 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2385 struct ssl_async_args args;
2388 args.buf = (void *)buf;
2390 args.type = WRITEFUNC;
2391 args.f.func_write = s->method->ssl_write;
2393 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2394 *written = sc->asyncrw;
2397 return s->method->ssl_write(s, buf, num, written);
2401 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2404 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2409 if (sc->handshake_func == NULL) {
2410 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2414 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2415 sc->rwstate = SSL_NOTHING;
2416 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2420 if (!BIO_get_ktls_send(sc->wbio)) {
2421 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2425 /* If we have an alert to send, lets send it */
2426 if (sc->s3.alert_dispatch) {
2427 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2429 /* SSLfatal() already called if appropriate */
2432 /* if it went, fall through and send more stuff */
2435 sc->rwstate = SSL_WRITING;
2436 if (BIO_flush(sc->wbio) <= 0) {
2437 if (!BIO_should_retry(sc->wbio)) {
2438 sc->rwstate = SSL_NOTHING;
2441 set_sys_error(EAGAIN);
2447 #ifdef OPENSSL_NO_KTLS
2448 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2449 "can't call ktls_sendfile(), ktls disabled");
2452 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2454 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2455 if ((get_last_sys_error() == EAGAIN) ||
2456 (get_last_sys_error() == EINTR) ||
2457 (get_last_sys_error() == EBUSY))
2458 BIO_set_retry_write(sc->wbio);
2461 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2464 sc->rwstate = SSL_NOTHING;
2469 int SSL_write(SSL *s, const void *buf, int num)
2475 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2479 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2482 * The cast is safe here because ret should be <= INT_MAX because num is
2491 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2493 int ret = ssl_write_internal(s, buf, num, written);
2500 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2502 int ret, early_data_state;
2504 uint32_t partialwrite;
2505 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2507 /* TODO(QUIC): This will need special handling for QUIC */
2511 switch (sc->early_data_state) {
2512 case SSL_EARLY_DATA_NONE:
2514 || !SSL_in_before(s)
2515 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2516 && (sc->psk_use_session_cb == NULL))) {
2517 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2522 case SSL_EARLY_DATA_CONNECT_RETRY:
2523 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2524 ret = SSL_connect(s);
2527 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2532 case SSL_EARLY_DATA_WRITE_RETRY:
2533 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2535 * We disable partial write for early data because we don't keep track
2536 * of how many bytes we've written between the SSL_write_ex() call and
2537 * the flush if the flush needs to be retried)
2539 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2540 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2541 ret = SSL_write_ex(s, buf, num, &writtmp);
2542 sc->mode |= partialwrite;
2544 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2547 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2550 case SSL_EARLY_DATA_WRITE_FLUSH:
2551 /* The buffering BIO is still in place so we need to flush it */
2552 if (statem_flush(sc) != 1)
2555 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2558 case SSL_EARLY_DATA_FINISHED_READING:
2559 case SSL_EARLY_DATA_READ_RETRY:
2560 early_data_state = sc->early_data_state;
2561 /* We are a server writing to an unauthenticated client */
2562 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2563 ret = SSL_write_ex(s, buf, num, written);
2564 /* The buffering BIO is still in place */
2566 (void)BIO_flush(sc->wbio);
2567 sc->early_data_state = early_data_state;
2571 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2576 int SSL_shutdown(SSL *s)
2579 * Note that this function behaves differently from what one might
2580 * expect. Return values are 0 for no success (yet), 1 for success; but
2581 * calling it once is usually not enough, even if blocking I/O is used
2582 * (see ssl3_shutdown).
2584 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2589 if (sc->handshake_func == NULL) {
2590 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2594 if (!SSL_in_init(s)) {
2595 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2596 struct ssl_async_args args;
2598 memset(&args, 0, sizeof(args));
2600 args.type = OTHERFUNC;
2601 args.f.func_other = s->method->ssl_shutdown;
2603 return ssl_start_async_job(s, &args, ssl_io_intern);
2605 return s->method->ssl_shutdown(s);
2608 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2613 int SSL_key_update(SSL *s, int updatetype)
2615 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2620 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2621 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2625 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2626 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2627 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2631 if (!SSL_is_init_finished(s)) {
2632 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2636 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2637 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2641 ossl_statem_set_in_init(sc, 1);
2642 sc->key_update = updatetype;
2646 int SSL_get_key_update_type(const SSL *s)
2648 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2653 return sc->key_update;
2657 * Can we accept a renegotiation request? If yes, set the flag and
2658 * return 1 if yes. If not, raise error and return 0.
2660 static int can_renegotiate(const SSL_CONNECTION *sc)
2662 if (SSL_CONNECTION_IS_TLS13(sc)) {
2663 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2667 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2668 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2675 int SSL_renegotiate(SSL *s)
2677 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2682 if (!can_renegotiate(sc))
2685 sc->renegotiate = 1;
2686 sc->new_session = 1;
2687 return s->method->ssl_renegotiate(s);
2690 int SSL_renegotiate_abbreviated(SSL *s)
2692 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2697 if (!can_renegotiate(sc))
2700 sc->renegotiate = 1;
2701 sc->new_session = 0;
2702 return s->method->ssl_renegotiate(s);
2705 int SSL_renegotiate_pending(const SSL *s)
2707 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2713 * becomes true when negotiation is requested; false again once a
2714 * handshake has finished
2716 return (sc->renegotiate != 0);
2719 int SSL_new_session_ticket(SSL *s)
2721 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2726 /* If we are in init because we're sending tickets, okay to send more. */
2727 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2728 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2729 || !SSL_CONNECTION_IS_TLS13(sc))
2731 sc->ext.extra_tickets_expected++;
2732 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2733 ossl_statem_set_in_init(sc, 1);
2737 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2740 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2742 /* TODO(QUIC): Special handling for some ctrls will be needed */
2747 case SSL_CTRL_GET_READ_AHEAD:
2748 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2749 case SSL_CTRL_SET_READ_AHEAD:
2750 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2751 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2754 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2755 sc->msg_callback_arg = parg;
2760 OSSL_PARAM options[2], *opts = options;
2764 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2766 *opts = OSSL_PARAM_construct_end();
2768 /* Ignore return value */
2769 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2773 case SSL_CTRL_CLEAR_MODE:
2774 return (sc->mode &= ~larg);
2775 case SSL_CTRL_GET_MAX_CERT_LIST:
2776 return (long)sc->max_cert_list;
2777 case SSL_CTRL_SET_MAX_CERT_LIST:
2780 l = (long)sc->max_cert_list;
2781 sc->max_cert_list = (size_t)larg;
2783 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2784 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2786 #ifndef OPENSSL_NO_KTLS
2787 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2789 #endif /* OPENSSL_NO_KTLS */
2790 sc->max_send_fragment = larg;
2791 if (sc->max_send_fragment < sc->split_send_fragment)
2792 sc->split_send_fragment = sc->max_send_fragment;
2794 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2795 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2797 sc->split_send_fragment = larg;
2799 case SSL_CTRL_SET_MAX_PIPELINES:
2800 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2802 sc->max_pipelines = larg;
2803 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2804 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2806 case SSL_CTRL_GET_RI_SUPPORT:
2807 return sc->s3.send_connection_binding;
2808 case SSL_CTRL_SET_RETRY_VERIFY:
2809 sc->rwstate = SSL_RETRY_VERIFY;
2811 case SSL_CTRL_CERT_FLAGS:
2812 return (sc->cert->cert_flags |= larg);
2813 case SSL_CTRL_CLEAR_CERT_FLAGS:
2814 return (sc->cert->cert_flags &= ~larg);
2816 case SSL_CTRL_GET_RAW_CIPHERLIST:
2818 if (sc->s3.tmp.ciphers_raw == NULL)
2820 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2821 return (int)sc->s3.tmp.ciphers_rawlen;
2823 return TLS_CIPHER_LEN;
2825 case SSL_CTRL_GET_EXTMS_SUPPORT:
2826 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2828 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2832 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2833 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2834 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2835 &sc->min_proto_version);
2836 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2837 return sc->min_proto_version;
2838 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2839 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2840 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2841 &sc->max_proto_version);
2842 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2843 return sc->max_proto_version;
2845 return s->method->ssl_ctrl(s, cmd, larg, parg);
2849 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2851 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2857 case SSL_CTRL_SET_MSG_CALLBACK:
2858 sc->msg_callback = (void (*)
2859 (int write_p, int version, int content_type,
2860 const void *buf, size_t len, SSL *ssl,
2865 return s->method->ssl_callback_ctrl(s, cmd, fp);
2869 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2871 return ctx->sessions;
2874 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2878 if (ssl_tsan_lock(ctx)) {
2879 res = tsan_load(stat);
2880 ssl_tsan_unlock(ctx);
2885 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2888 /* For some cases with ctx == NULL perform syntax checks */
2891 case SSL_CTRL_SET_GROUPS_LIST:
2892 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2893 case SSL_CTRL_SET_SIGALGS_LIST:
2894 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2895 return tls1_set_sigalgs_list(NULL, parg, 0);
2902 case SSL_CTRL_GET_READ_AHEAD:
2903 return ctx->read_ahead;
2904 case SSL_CTRL_SET_READ_AHEAD:
2905 l = ctx->read_ahead;
2906 ctx->read_ahead = larg;
2909 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2910 ctx->msg_callback_arg = parg;
2913 case SSL_CTRL_GET_MAX_CERT_LIST:
2914 return (long)ctx->max_cert_list;
2915 case SSL_CTRL_SET_MAX_CERT_LIST:
2918 l = (long)ctx->max_cert_list;
2919 ctx->max_cert_list = (size_t)larg;
2922 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2925 l = (long)ctx->session_cache_size;
2926 ctx->session_cache_size = (size_t)larg;
2928 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2929 return (long)ctx->session_cache_size;
2930 case SSL_CTRL_SET_SESS_CACHE_MODE:
2931 l = ctx->session_cache_mode;
2932 ctx->session_cache_mode = larg;
2934 case SSL_CTRL_GET_SESS_CACHE_MODE:
2935 return ctx->session_cache_mode;
2937 case SSL_CTRL_SESS_NUMBER:
2938 return lh_SSL_SESSION_num_items(ctx->sessions);
2939 case SSL_CTRL_SESS_CONNECT:
2940 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2941 case SSL_CTRL_SESS_CONNECT_GOOD:
2942 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2943 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2944 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2945 case SSL_CTRL_SESS_ACCEPT:
2946 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2947 case SSL_CTRL_SESS_ACCEPT_GOOD:
2948 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2949 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2950 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2951 case SSL_CTRL_SESS_HIT:
2952 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2953 case SSL_CTRL_SESS_CB_HIT:
2954 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2955 case SSL_CTRL_SESS_MISSES:
2956 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2957 case SSL_CTRL_SESS_TIMEOUTS:
2958 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2959 case SSL_CTRL_SESS_CACHE_FULL:
2960 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2962 return (ctx->mode |= larg);
2963 case SSL_CTRL_CLEAR_MODE:
2964 return (ctx->mode &= ~larg);
2965 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2966 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2968 ctx->max_send_fragment = larg;
2969 if (ctx->max_send_fragment < ctx->split_send_fragment)
2970 ctx->split_send_fragment = ctx->max_send_fragment;
2972 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2973 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2975 ctx->split_send_fragment = larg;
2977 case SSL_CTRL_SET_MAX_PIPELINES:
2978 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2980 ctx->max_pipelines = larg;
2982 case SSL_CTRL_CERT_FLAGS:
2983 return (ctx->cert->cert_flags |= larg);
2984 case SSL_CTRL_CLEAR_CERT_FLAGS:
2985 return (ctx->cert->cert_flags &= ~larg);
2986 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2987 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2988 && ssl_set_version_bound(ctx->method->version, (int)larg,
2989 &ctx->min_proto_version);
2990 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2991 return ctx->min_proto_version;
2992 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2993 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2994 && ssl_set_version_bound(ctx->method->version, (int)larg,
2995 &ctx->max_proto_version);
2996 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2997 return ctx->max_proto_version;
2999 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3003 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3006 case SSL_CTRL_SET_MSG_CALLBACK:
3007 ctx->msg_callback = (void (*)
3008 (int write_p, int version, int content_type,
3009 const void *buf, size_t len, SSL *ssl,
3014 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3018 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3027 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3028 const SSL_CIPHER *const *bp)
3030 if ((*ap)->id > (*bp)->id)
3032 if ((*ap)->id < (*bp)->id)
3038 * return a STACK of the ciphers available for the SSL and in order of
3041 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3043 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3046 if (sc->cipher_list != NULL) {
3047 return sc->cipher_list;
3048 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3049 return s->ctx->cipher_list;
3055 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3057 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3059 if (sc == NULL || !sc->server)
3061 return sc->peer_ciphers;
3064 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3066 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3073 ciphers = SSL_get_ciphers(s);
3076 if (!ssl_set_client_disabled(sc))
3078 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3079 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3080 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3082 sk = sk_SSL_CIPHER_new_null();
3085 if (!sk_SSL_CIPHER_push(sk, c)) {
3086 sk_SSL_CIPHER_free(sk);
3094 /** return a STACK of the ciphers available for the SSL and in order of
3096 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3099 if (s->cipher_list_by_id != NULL)
3100 return s->cipher_list_by_id;
3101 else if (s->ssl.ctx != NULL
3102 && s->ssl.ctx->cipher_list_by_id != NULL)
3103 return s->ssl.ctx->cipher_list_by_id;
3108 /** The old interface to get the same thing as SSL_get_ciphers() */
3109 const char *SSL_get_cipher_list(const SSL *s, int n)
3111 const SSL_CIPHER *c;
3112 STACK_OF(SSL_CIPHER) *sk;
3116 sk = SSL_get_ciphers(s);
3117 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3119 c = sk_SSL_CIPHER_value(sk, n);
3125 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3127 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3130 return ctx->cipher_list;
3135 * Distinguish between ciphers controlled by set_ciphersuite() and
3136 * set_cipher_list() when counting.
3138 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3141 const SSL_CIPHER *c;
3145 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3146 c = sk_SSL_CIPHER_value(sk, i);
3147 if (c->min_tls >= TLS1_3_VERSION)
3154 /** specify the ciphers to be used by default by the SSL_CTX */
3155 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3157 STACK_OF(SSL_CIPHER) *sk;
3159 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3160 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3163 * ssl_create_cipher_list may return an empty stack if it was unable to
3164 * find a cipher matching the given rule string (for example if the rule
3165 * string specifies a cipher which has been disabled). This is not an
3166 * error as far as ssl_create_cipher_list is concerned, and hence
3167 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3171 else if (cipher_list_tls12_num(sk) == 0) {
3172 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3178 /** specify the ciphers to be used by the SSL */
3179 int SSL_set_cipher_list(SSL *s, const char *str)
3181 STACK_OF(SSL_CIPHER) *sk;
3182 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3187 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3188 &sc->cipher_list, &sc->cipher_list_by_id, str,
3190 /* see comment in SSL_CTX_set_cipher_list */
3193 else if (cipher_list_tls12_num(sk) == 0) {
3194 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3200 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3203 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3204 const SSL_CIPHER *c;
3206 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3212 || sc->peer_ciphers == NULL
3217 clntsk = sc->peer_ciphers;
3218 srvrsk = SSL_get_ciphers(s);
3219 if (clntsk == NULL || srvrsk == NULL)
3222 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3225 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3228 c = sk_SSL_CIPHER_value(clntsk, i);
3229 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3232 n = strlen(c->name);
3249 * Return the requested servername (SNI) value. Note that the behaviour varies
3251 * - whether this is called by the client or the server,
3252 * - if we are before or during/after the handshake,
3253 * - if a resumption or normal handshake is being attempted/has occurred
3254 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3256 * Note that only the host_name type is defined (RFC 3546).
3258 const char *SSL_get_servername(const SSL *s, const int type)
3260 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3267 * If we don't know if we are the client or the server yet then we assume
3270 server = sc->handshake_func == NULL ? 0 : sc->server;
3272 if (type != TLSEXT_NAMETYPE_host_name)
3278 * In TLSv1.3 on the server SNI is not associated with the session
3279 * but in TLSv1.2 or below it is.
3281 * Before the handshake:
3284 * During/after the handshake (TLSv1.2 or below resumption occurred):
3285 * - If a servername was accepted by the server in the original
3286 * handshake then it will return that servername, or NULL otherwise.
3288 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3289 * - The function will return the servername requested by the client in
3290 * this handshake or NULL if none was requested.
3292 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3293 return sc->session->ext.hostname;
3298 * Before the handshake:
3299 * - If a servername has been set via a call to
3300 * SSL_set_tlsext_host_name() then it will return that servername
3301 * - If one has not been set, but a TLSv1.2 resumption is being
3302 * attempted and the session from the original handshake had a
3303 * servername accepted by the server then it will return that
3305 * - Otherwise it returns NULL
3307 * During/after the handshake (TLSv1.2 or below resumption occurred):
3308 * - If the session from the original handshake had a servername accepted
3309 * by the server then it will return that servername.
3310 * - Otherwise it returns the servername set via
3311 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3313 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3314 * - It will return the servername set via SSL_set_tlsext_host_name()
3315 * (or NULL if it was not called).
3317 if (SSL_in_before(s)) {
3318 if (sc->ext.hostname == NULL
3319 && sc->session != NULL
3320 && sc->session->ssl_version != TLS1_3_VERSION)
3321 return sc->session->ext.hostname;
3323 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3324 && sc->session->ext.hostname != NULL)
3325 return sc->session->ext.hostname;
3329 return sc->ext.hostname;
3332 int SSL_get_servername_type(const SSL *s)
3334 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3335 return TLSEXT_NAMETYPE_host_name;
3340 * SSL_select_next_proto implements the standard protocol selection. It is
3341 * expected that this function is called from the callback set by
3342 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3343 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3344 * not included in the length. A byte string of length 0 is invalid. No byte
3345 * string may be truncated. The current, but experimental algorithm for
3346 * selecting the protocol is: 1) If the server doesn't support NPN then this
3347 * is indicated to the callback. In this case, the client application has to
3348 * abort the connection or have a default application level protocol. 2) If
3349 * the server supports NPN, but advertises an empty list then the client
3350 * selects the first protocol in its list, but indicates via the API that this
3351 * fallback case was enacted. 3) Otherwise, the client finds the first
3352 * protocol in the server's list that it supports and selects this protocol.
3353 * This is because it's assumed that the server has better information about
3354 * which protocol a client should use. 4) If the client doesn't support any
3355 * of the server's advertised protocols, then this is treated the same as
3356 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3357 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3359 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3360 const unsigned char *server,
3361 unsigned int server_len,
3362 const unsigned char *client, unsigned int client_len)
3365 const unsigned char *result;
3366 int status = OPENSSL_NPN_UNSUPPORTED;
3369 * For each protocol in server preference order, see if we support it.
3371 for (i = 0; i < server_len;) {
3372 for (j = 0; j < client_len;) {
3373 if (server[i] == client[j] &&
3374 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3375 /* We found a match */
3376 result = &server[i];
3377 status = OPENSSL_NPN_NEGOTIATED;
3387 /* There's no overlap between our protocols and the server's list. */
3389 status = OPENSSL_NPN_NO_OVERLAP;
3392 *out = (unsigned char *)result + 1;
3393 *outlen = result[0];
3397 #ifndef OPENSSL_NO_NEXTPROTONEG
3399 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3400 * client's requested protocol for this connection and returns 0. If the
3401 * client didn't request any protocol, then *data is set to NULL. Note that
3402 * the client can request any protocol it chooses. The value returned from
3403 * this function need not be a member of the list of supported protocols
3404 * provided by the callback.
3406 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3409 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3412 /* We have no other way to indicate error */
3418 *data = sc->ext.npn;
3419 if (*data == NULL) {
3422 *len = (unsigned int)sc->ext.npn_len;
3427 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3428 * a TLS server needs a list of supported protocols for Next Protocol
3429 * Negotiation. The returned list must be in wire format. The list is
3430 * returned by setting |out| to point to it and |outlen| to its length. This
3431 * memory will not be modified, but one should assume that the SSL* keeps a
3432 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3433 * wishes to advertise. Otherwise, no such extension will be included in the
3436 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3437 SSL_CTX_npn_advertised_cb_func cb,
3440 ctx->ext.npn_advertised_cb = cb;
3441 ctx->ext.npn_advertised_cb_arg = arg;
3445 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3446 * client needs to select a protocol from the server's provided list. |out|
3447 * must be set to point to the selected protocol (which may be within |in|).
3448 * The length of the protocol name must be written into |outlen|. The
3449 * server's advertised protocols are provided in |in| and |inlen|. The
3450 * callback can assume that |in| is syntactically valid. The client must
3451 * select a protocol. It is fatal to the connection if this callback returns
3452 * a value other than SSL_TLSEXT_ERR_OK.
3454 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3455 SSL_CTX_npn_select_cb_func cb,
3458 ctx->ext.npn_select_cb = cb;
3459 ctx->ext.npn_select_cb_arg = arg;
3463 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3467 if (protos_len < 2 || protos == NULL)
3470 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3471 if (protos[idx] == 0)
3474 return idx == protos_len;
3477 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3478 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3479 * length-prefixed strings). Returns 0 on success.
3481 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3482 unsigned int protos_len)
3484 unsigned char *alpn;
3486 if (protos_len == 0 || protos == NULL) {
3487 OPENSSL_free(ctx->ext.alpn);
3488 ctx->ext.alpn = NULL;
3489 ctx->ext.alpn_len = 0;
3492 /* Not valid per RFC */
3493 if (!alpn_value_ok(protos, protos_len))
3496 alpn = OPENSSL_memdup(protos, protos_len);
3498 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3501 OPENSSL_free(ctx->ext.alpn);
3502 ctx->ext.alpn = alpn;
3503 ctx->ext.alpn_len = protos_len;
3509 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3510 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3511 * length-prefixed strings). Returns 0 on success.
3513 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3514 unsigned int protos_len)
3516 unsigned char *alpn;
3517 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3522 if (protos_len == 0 || protos == NULL) {
3523 OPENSSL_free(sc->ext.alpn);
3524 sc->ext.alpn = NULL;
3525 sc->ext.alpn_len = 0;
3528 /* Not valid per RFC */
3529 if (!alpn_value_ok(protos, protos_len))
3532 alpn = OPENSSL_memdup(protos, protos_len);
3534 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3537 OPENSSL_free(sc->ext.alpn);
3538 sc->ext.alpn = alpn;
3539 sc->ext.alpn_len = protos_len;
3545 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3546 * called during ClientHello processing in order to select an ALPN protocol
3547 * from the client's list of offered protocols.
3549 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3550 SSL_CTX_alpn_select_cb_func cb,
3553 ctx->ext.alpn_select_cb = cb;
3554 ctx->ext.alpn_select_cb_arg = arg;
3558 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3559 * On return it sets |*data| to point to |*len| bytes of protocol name
3560 * (not including the leading length-prefix byte). If the server didn't
3561 * respond with a negotiated protocol then |*len| will be zero.
3563 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3566 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3569 /* We have no other way to indicate error */
3575 *data = sc->s3.alpn_selected;
3579 *len = (unsigned int)sc->s3.alpn_selected_len;
3582 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3583 const char *label, size_t llen,
3584 const unsigned char *context, size_t contextlen,
3587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3592 if (sc->session == NULL
3593 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3596 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3598 contextlen, use_context);
3601 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3602 const char *label, size_t llen,
3603 const unsigned char *context,
3606 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3611 if (sc->version != TLS1_3_VERSION)
3614 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3615 context, contextlen);
3618 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3620 const unsigned char *session_id = a->session_id;
3622 unsigned char tmp_storage[4];
3624 if (a->session_id_length < sizeof(tmp_storage)) {
3625 memset(tmp_storage, 0, sizeof(tmp_storage));
3626 memcpy(tmp_storage, a->session_id, a->session_id_length);
3627 session_id = tmp_storage;
3631 ((unsigned long)session_id[0]) |
3632 ((unsigned long)session_id[1] << 8L) |
3633 ((unsigned long)session_id[2] << 16L) |
3634 ((unsigned long)session_id[3] << 24L);
3639 * NB: If this function (or indeed the hash function which uses a sort of
3640 * coarser function than this one) is changed, ensure
3641 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3642 * being able to construct an SSL_SESSION that will collide with any existing
3643 * session with a matching session ID.
3645 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3647 if (a->ssl_version != b->ssl_version)
3649 if (a->session_id_length != b->session_id_length)
3651 return memcmp(a->session_id, b->session_id, a->session_id_length);
3655 * These wrapper functions should remain rather than redeclaring
3656 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3657 * variable. The reason is that the functions aren't static, they're exposed
3661 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3662 const SSL_METHOD *meth)
3664 SSL_CTX *ret = NULL;
3667 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3671 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3674 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3675 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3678 ret = OPENSSL_zalloc(sizeof(*ret));
3682 /* Init the reference counting before any call to SSL_CTX_free */
3683 ret->references = 1;
3684 ret->lock = CRYPTO_THREAD_lock_new();
3685 if (ret->lock == NULL) {
3686 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3691 #ifdef TSAN_REQUIRES_LOCKING
3692 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3693 if (ret->tsan_lock == NULL) {
3694 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3699 ret->libctx = libctx;
3700 if (propq != NULL) {
3701 ret->propq = OPENSSL_strdup(propq);
3702 if (ret->propq == NULL)
3707 ret->min_proto_version = 0;
3708 ret->max_proto_version = 0;
3709 ret->mode = SSL_MODE_AUTO_RETRY;
3710 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3711 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3712 /* We take the system default. */
3713 ret->session_timeout = meth->get_timeout();
3714 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3715 ret->verify_mode = SSL_VERIFY_NONE;
3716 if ((ret->cert = ssl_cert_new()) == NULL)
3719 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3720 if (ret->sessions == NULL)
3722 ret->cert_store = X509_STORE_new();
3723 if (ret->cert_store == NULL)
3725 #ifndef OPENSSL_NO_CT
3726 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3727 if (ret->ctlog_store == NULL)
3731 /* initialize cipher/digest methods table */
3732 if (!ssl_load_ciphers(ret))
3734 /* initialise sig algs */
3735 if (!ssl_setup_sig_algs(ret))
3739 if (!ssl_load_groups(ret))
3742 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3745 if (!ssl_create_cipher_list(ret,
3746 ret->tls13_ciphersuites,
3747 &ret->cipher_list, &ret->cipher_list_by_id,
3748 OSSL_default_cipher_list(), ret->cert)
3749 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3750 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3754 ret->param = X509_VERIFY_PARAM_new();
3755 if (ret->param == NULL)
3759 * If these aren't available from the provider we'll get NULL returns.
3760 * That's fine but will cause errors later if SSLv3 is negotiated
3762 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3763 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3765 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3768 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3771 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3774 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3777 /* No compression for DTLS */
3778 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3779 ret->comp_methods = SSL_COMP_get_compression_methods();
3781 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3782 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3784 /* Setup RFC5077 ticket keys */
3785 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3786 sizeof(ret->ext.tick_key_name), 0) <= 0)
3787 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3788 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3789 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3790 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3791 ret->options |= SSL_OP_NO_TICKET;
3793 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3794 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3797 #ifndef OPENSSL_NO_SRP
3798 if (!ssl_ctx_srp_ctx_init_intern(ret))
3801 #ifndef OPENSSL_NO_ENGINE
3802 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3803 # define eng_strx(x) #x
3804 # define eng_str(x) eng_strx(x)
3805 /* Use specific client engine automatically... ignore errors */
3808 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3811 ENGINE_load_builtin_engines();
3812 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3814 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3820 * Disable compression by default to prevent CRIME. Applications can
3821 * re-enable compression by configuring
3822 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3823 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3824 * middlebox compatibility by default. This may be disabled by default in
3825 * a later OpenSSL version.
3827 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3829 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3832 * We cannot usefully set a default max_early_data here (which gets
3833 * propagated in SSL_new(), for the following reason: setting the
3834 * SSL field causes tls_construct_stoc_early_data() to tell the
3835 * client that early data will be accepted when constructing a TLS 1.3
3836 * session ticket, and the client will accordingly send us early data
3837 * when using that ticket (if the client has early data to send).
3838 * However, in order for the early data to actually be consumed by
3839 * the application, the application must also have calls to
3840 * SSL_read_early_data(); otherwise we'll just skip past the early data
3841 * and ignore it. So, since the application must add calls to
3842 * SSL_read_early_data(), we also require them to add
3843 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3844 * eliminating the bandwidth-wasting early data in the case described
3847 ret->max_early_data = 0;
3850 * Default recv_max_early_data is a fully loaded single record. Could be
3851 * split across multiple records in practice. We set this differently to
3852 * max_early_data so that, in the default case, we do not advertise any
3853 * support for early_data, but if a client were to send us some (e.g.
3854 * because of an old, stale ticket) then we will tolerate it and skip over
3857 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3859 /* By default we send two session tickets automatically in TLSv1.3 */
3860 ret->num_tickets = 2;
3862 ssl_ctx_system_config(ret);
3866 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3872 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3874 return SSL_CTX_new_ex(NULL, NULL, meth);
3877 int SSL_CTX_up_ref(SSL_CTX *ctx)
3881 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3884 REF_PRINT_COUNT("SSL_CTX", ctx);
3885 REF_ASSERT_ISNT(i < 2);
3886 return ((i > 1) ? 1 : 0);
3889 void SSL_CTX_free(SSL_CTX *a)
3897 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3898 REF_PRINT_COUNT("SSL_CTX", a);
3901 REF_ASSERT_ISNT(i < 0);
3903 X509_VERIFY_PARAM_free(a->param);
3904 dane_ctx_final(&a->dane);
3907 * Free internal session cache. However: the remove_cb() may reference
3908 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3909 * after the sessions were flushed.
3910 * As the ex_data handling routines might also touch the session cache,
3911 * the most secure solution seems to be: empty (flush) the cache, then
3912 * free ex_data, then finally free the cache.
3913 * (See ticket [openssl.org #212].)
3915 if (a->sessions != NULL)
3916 SSL_CTX_flush_sessions(a, 0);
3918 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3919 lh_SSL_SESSION_free(a->sessions);
3920 X509_STORE_free(a->cert_store);
3921 #ifndef OPENSSL_NO_CT
3922 CTLOG_STORE_free(a->ctlog_store);
3924 sk_SSL_CIPHER_free(a->cipher_list);
3925 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3926 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3927 ssl_cert_free(a->cert);
3928 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3929 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3930 OSSL_STACK_OF_X509_free(a->extra_certs);
3931 a->comp_methods = NULL;
3932 #ifndef OPENSSL_NO_SRTP
3933 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3935 #ifndef OPENSSL_NO_SRP
3936 ssl_ctx_srp_ctx_free_intern(a);
3938 #ifndef OPENSSL_NO_ENGINE
3939 tls_engine_finish(a->client_cert_engine);
3942 OPENSSL_free(a->ext.ecpointformats);
3943 OPENSSL_free(a->ext.supportedgroups);
3944 OPENSSL_free(a->ext.supported_groups_default);
3945 OPENSSL_free(a->ext.alpn);
3946 OPENSSL_secure_free(a->ext.secure);
3948 ssl_evp_md_free(a->md5);
3949 ssl_evp_md_free(a->sha1);
3951 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3952 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3953 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3954 ssl_evp_md_free(a->ssl_digest_methods[j]);
3955 for (j = 0; j < a->group_list_len; j++) {
3956 OPENSSL_free(a->group_list[j].tlsname);
3957 OPENSSL_free(a->group_list[j].realname);
3958 OPENSSL_free(a->group_list[j].algorithm);
3960 OPENSSL_free(a->group_list);
3962 OPENSSL_free(a->sigalg_lookup_cache);
3964 CRYPTO_THREAD_lock_free(a->lock);
3965 #ifdef TSAN_REQUIRES_LOCKING
3966 CRYPTO_THREAD_lock_free(a->tsan_lock);
3969 OPENSSL_free(a->propq);
3974 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3976 ctx->default_passwd_callback = cb;
3979 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3981 ctx->default_passwd_callback_userdata = u;
3984 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3986 return ctx->default_passwd_callback;
3989 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3991 return ctx->default_passwd_callback_userdata;
3994 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3996 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4001 sc->default_passwd_callback = cb;
4004 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4006 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4011 sc->default_passwd_callback_userdata = u;
4014 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4021 return sc->default_passwd_callback;
4024 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4026 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4031 return sc->default_passwd_callback_userdata;
4034 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4035 int (*cb) (X509_STORE_CTX *, void *),
4038 ctx->app_verify_callback = cb;
4039 ctx->app_verify_arg = arg;
4042 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4043 int (*cb) (int, X509_STORE_CTX *))
4045 ctx->verify_mode = mode;
4046 ctx->default_verify_callback = cb;
4049 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4051 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4054 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4056 ssl_cert_set_cert_cb(c->cert, cb, arg);
4059 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4066 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4069 void ssl_set_masks(SSL_CONNECTION *s)
4072 uint32_t *pvalid = s->s3.tmp.valid_flags;
4073 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4074 unsigned long mask_k, mask_a;
4075 int have_ecc_cert, ecdsa_ok;
4080 dh_tmp = (c->dh_tmp != NULL
4081 || c->dh_tmp_cb != NULL
4084 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4085 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4086 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4087 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4091 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4092 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4094 #ifndef OPENSSL_NO_GOST
4095 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4096 mask_k |= SSL_kGOST | SSL_kGOST18;
4097 mask_a |= SSL_aGOST12;
4099 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4100 mask_k |= SSL_kGOST | SSL_kGOST18;
4101 mask_a |= SSL_aGOST12;
4103 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4104 mask_k |= SSL_kGOST;
4105 mask_a |= SSL_aGOST01;
4116 * If we only have an RSA-PSS certificate allow RSA authentication
4117 * if TLS 1.2 and peer supports it.
4120 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4121 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4122 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4129 mask_a |= SSL_aNULL;
4132 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4133 * depending on the key usage extension.
4135 if (have_ecc_cert) {
4137 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4138 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4139 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4142 mask_a |= SSL_aECDSA;
4144 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4145 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4146 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4147 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4148 mask_a |= SSL_aECDSA;
4150 /* Allow Ed448 for TLS 1.2 if peer supports it */
4151 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4152 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4153 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4154 mask_a |= SSL_aECDSA;
4156 mask_k |= SSL_kECDHE;
4158 #ifndef OPENSSL_NO_PSK
4161 if (mask_k & SSL_kRSA)
4162 mask_k |= SSL_kRSAPSK;
4163 if (mask_k & SSL_kDHE)
4164 mask_k |= SSL_kDHEPSK;
4165 if (mask_k & SSL_kECDHE)
4166 mask_k |= SSL_kECDHEPSK;
4169 s->s3.tmp.mask_k = mask_k;
4170 s->s3.tmp.mask_a = mask_a;
4173 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4175 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4176 /* key usage, if present, must allow signing */
4177 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4178 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4182 return 1; /* all checks are ok */
4185 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4186 const unsigned char **serverinfo,
4187 size_t *serverinfo_length)
4189 CERT_PKEY *cpk = s->s3.tmp.cert;
4190 *serverinfo_length = 0;
4192 if (cpk == NULL || cpk->serverinfo == NULL)
4195 *serverinfo = cpk->serverinfo;
4196 *serverinfo_length = cpk->serverinfo_length;
4200 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4205 * If the session_id_length is 0, we are not supposed to cache it, and it
4206 * would be rather hard to do anyway :-)
4208 if (s->session->session_id_length == 0)
4212 * If sid_ctx_length is 0 there is no specific application context
4213 * associated with this session, so when we try to resume it and
4214 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4215 * indication that this is actually a session for the proper application
4216 * context, and the *handshake* will fail, not just the resumption attempt.
4217 * Do not cache (on the server) these sessions that are not resumable
4218 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4220 if (s->server && s->session->sid_ctx_length == 0
4221 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4224 i = s->session_ctx->session_cache_mode;
4226 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4228 * Add the session to the internal cache. In server side TLSv1.3 we
4229 * normally don't do this because by default it's a full stateless ticket
4230 * with only a dummy session id so there is no reason to cache it,
4232 * - we are doing early_data, in which case we cache so that we can
4234 * - the application has set a remove_session_cb so needs to know about
4235 * session timeout events
4236 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4238 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4239 && (!SSL_CONNECTION_IS_TLS13(s)
4241 || (s->max_early_data > 0
4242 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4243 || s->session_ctx->remove_session_cb != NULL
4244 || (s->options & SSL_OP_NO_TICKET) != 0))
4245 SSL_CTX_add_session(s->session_ctx, s->session);
4248 * Add the session to the external cache. We do this even in server side
4249 * TLSv1.3 without early data because some applications just want to
4250 * know about the creation of a session and aren't doing a full cache.
4252 if (s->session_ctx->new_session_cb != NULL) {
4253 SSL_SESSION_up_ref(s->session);
4254 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4256 SSL_SESSION_free(s->session);
4260 /* auto flush every 255 connections */
4261 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4262 TSAN_QUALIFIER int *stat;
4264 if (mode & SSL_SESS_CACHE_CLIENT)
4265 stat = &s->session_ctx->stats.sess_connect_good;
4267 stat = &s->session_ctx->stats.sess_accept_good;
4268 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4269 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4273 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4278 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4283 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4286 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4288 /* TODO(QUIC): Do we want this for QUIC? */
4290 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4293 if (s->method != meth) {
4294 const SSL_METHOD *sm = s->method;
4295 int (*hf) (SSL *) = sc->handshake_func;
4297 if (sm->version == meth->version)
4302 ret = s->method->ssl_init(s);
4305 if (hf == sm->ssl_connect)
4306 sc->handshake_func = meth->ssl_connect;
4307 else if (hf == sm->ssl_accept)
4308 sc->handshake_func = meth->ssl_accept;
4313 int SSL_get_error(const SSL *s, int i)
4318 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4321 return SSL_ERROR_NONE;
4323 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4325 return SSL_ERROR_SSL;
4328 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4329 * where we do encode the error
4331 if ((l = ERR_peek_error()) != 0) {
4332 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4333 return SSL_ERROR_SYSCALL;
4335 return SSL_ERROR_SSL;
4338 if (SSL_want_read(s)) {
4339 bio = SSL_get_rbio(s);
4340 if (BIO_should_read(bio))
4341 return SSL_ERROR_WANT_READ;
4342 else if (BIO_should_write(bio))
4344 * This one doesn't make too much sense ... We never try to write
4345 * to the rbio, and an application program where rbio and wbio
4346 * are separate couldn't even know what it should wait for.
4347 * However if we ever set s->rwstate incorrectly (so that we have
4348 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4349 * wbio *are* the same, this test works around that bug; so it
4350 * might be safer to keep it.
4352 return SSL_ERROR_WANT_WRITE;
4353 else if (BIO_should_io_special(bio)) {
4354 reason = BIO_get_retry_reason(bio);
4355 if (reason == BIO_RR_CONNECT)
4356 return SSL_ERROR_WANT_CONNECT;
4357 else if (reason == BIO_RR_ACCEPT)
4358 return SSL_ERROR_WANT_ACCEPT;
4360 return SSL_ERROR_SYSCALL; /* unknown */
4364 if (SSL_want_write(s)) {
4365 /* Access wbio directly - in order to use the buffered bio if present */
4367 if (BIO_should_write(bio))
4368 return SSL_ERROR_WANT_WRITE;
4369 else if (BIO_should_read(bio))
4371 * See above (SSL_want_read(s) with BIO_should_write(bio))
4373 return SSL_ERROR_WANT_READ;
4374 else if (BIO_should_io_special(bio)) {
4375 reason = BIO_get_retry_reason(bio);
4376 if (reason == BIO_RR_CONNECT)
4377 return SSL_ERROR_WANT_CONNECT;
4378 else if (reason == BIO_RR_ACCEPT)
4379 return SSL_ERROR_WANT_ACCEPT;
4381 return SSL_ERROR_SYSCALL;
4384 if (SSL_want_x509_lookup(s))
4385 return SSL_ERROR_WANT_X509_LOOKUP;
4386 if (SSL_want_retry_verify(s))
4387 return SSL_ERROR_WANT_RETRY_VERIFY;
4388 if (SSL_want_async(s))
4389 return SSL_ERROR_WANT_ASYNC;
4390 if (SSL_want_async_job(s))
4391 return SSL_ERROR_WANT_ASYNC_JOB;
4392 if (SSL_want_client_hello_cb(s))
4393 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4395 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4396 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4397 return SSL_ERROR_ZERO_RETURN;
4399 return SSL_ERROR_SYSCALL;
4402 static int ssl_do_handshake_intern(void *vargs)
4404 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4406 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4411 return sc->handshake_func(s);
4414 int SSL_do_handshake(SSL *s)
4417 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4419 /* TODO(QUIC): Special handling for QUIC will be needed */
4423 if (sc->handshake_func == NULL) {
4424 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4428 ossl_statem_check_finish_init(sc, -1);
4430 s->method->ssl_renegotiate_check(s, 0);
4432 if (SSL_in_init(s) || SSL_in_before(s)) {
4433 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4434 struct ssl_async_args args;
4436 memset(&args, 0, sizeof(args));
4439 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4441 ret = sc->handshake_func(s);
4447 void SSL_set_accept_state(SSL *s)
4449 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4451 /* TODO(QUIC): Special handling for QUIC will be needed */
4457 ossl_statem_clear(sc);
4458 sc->handshake_func = s->method->ssl_accept;
4462 void SSL_set_connect_state(SSL *s)
4464 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4466 /* TODO(QUIC): Special handling for QUIC will be needed */
4472 ossl_statem_clear(sc);
4473 sc->handshake_func = s->method->ssl_connect;
4477 int ssl_undefined_function(SSL *s)
4479 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4483 int ssl_undefined_void_function(void)
4485 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4489 int ssl_undefined_const_function(const SSL *s)
4494 const SSL_METHOD *ssl_bad_method(int ver)
4496 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4500 const char *ssl_protocol_to_string(int version)
4504 case TLS1_3_VERSION:
4507 case TLS1_2_VERSION:
4510 case TLS1_1_VERSION:
4525 case DTLS1_2_VERSION:
4533 const char *SSL_get_version(const SSL *s)
4535 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4537 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4541 return ssl_protocol_to_string(sc->version);
4544 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4546 STACK_OF(X509_NAME) *sk;
4555 if ((sk = sk_X509_NAME_new_null()) == NULL)
4557 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4558 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4560 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4563 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4565 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4574 SSL *SSL_dup(SSL *s)
4578 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4579 SSL_CONNECTION *retsc;
4580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4585 /* If we're not quiescent, just up_ref! */
4586 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4587 CRYPTO_UP_REF(&s->references, &i, s->lock);
4592 * Otherwise, copy configuration state, and session if set.
4594 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4596 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4599 if (sc->session != NULL) {
4601 * Arranges to share the same session via up_ref. This "copies"
4602 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4604 if (!SSL_copy_session_id(ret, s))
4608 * No session has been established yet, so we have to expect that
4609 * s->cert or ret->cert will be changed later -- they should not both
4610 * point to the same object, and thus we can't use
4611 * SSL_copy_session_id.
4613 if (!SSL_set_ssl_method(ret, s->method))
4616 if (sc->cert != NULL) {
4617 ssl_cert_free(retsc->cert);
4618 retsc->cert = ssl_cert_dup(sc->cert);
4619 if (retsc->cert == NULL)
4623 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4624 (int)sc->sid_ctx_length))
4628 if (!ssl_dane_dup(retsc, sc))
4630 retsc->version = sc->version;
4631 retsc->options = sc->options;
4632 retsc->min_proto_version = sc->min_proto_version;
4633 retsc->max_proto_version = sc->max_proto_version;
4634 retsc->mode = sc->mode;
4635 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4636 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4637 retsc->msg_callback = sc->msg_callback;
4638 retsc->msg_callback_arg = sc->msg_callback_arg;
4639 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4640 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4641 retsc->generate_session_id = sc->generate_session_id;
4643 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4645 /* copy app data, a little dangerous perhaps */
4646 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4649 retsc->server = sc->server;
4650 if (sc->handshake_func) {
4652 SSL_set_accept_state(ret);
4654 SSL_set_connect_state(ret);
4656 retsc->shutdown = sc->shutdown;
4657 retsc->hit = sc->hit;
4659 retsc->default_passwd_callback = sc->default_passwd_callback;
4660 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4662 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4664 /* dup the cipher_list and cipher_list_by_id stacks */
4665 if (sc->cipher_list != NULL) {
4666 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4669 if (sc->cipher_list_by_id != NULL)
4670 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4674 /* Dup the client_CA list */
4675 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4676 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4686 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4688 if (s->enc_read_ctx != NULL) {
4689 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4690 s->enc_read_ctx = NULL;
4692 if (s->enc_write_ctx != NULL) {
4693 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4694 s->enc_write_ctx = NULL;
4696 #ifndef OPENSSL_NO_COMP
4697 COMP_CTX_free(s->expand);
4699 COMP_CTX_free(s->compress);
4704 X509 *SSL_get_certificate(const SSL *s)
4706 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4711 if (sc->cert != NULL)
4712 return sc->cert->key->x509;
4717 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4719 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4724 if (sc->cert != NULL)
4725 return sc->cert->key->privatekey;
4730 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4732 if (ctx->cert != NULL)
4733 return ctx->cert->key->x509;
4738 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4740 if (ctx->cert != NULL)
4741 return ctx->cert->key->privatekey;
4746 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4748 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4753 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4754 return sc->session->cipher;
4758 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4760 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4765 return sc->s3.tmp.new_cipher;
4768 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4770 #ifndef OPENSSL_NO_COMP
4771 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4776 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4782 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4784 #ifndef OPENSSL_NO_COMP
4785 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4790 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4796 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4800 if (s->bbio != NULL) {
4801 /* Already buffered. */
4805 bbio = BIO_new(BIO_f_buffer());
4806 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4808 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4812 s->wbio = BIO_push(bbio, s->wbio);
4814 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4819 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4821 /* callers ensure s is never null */
4822 if (s->bbio == NULL)
4825 s->wbio = BIO_pop(s->wbio);
4826 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4834 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4836 ctx->quiet_shutdown = mode;
4839 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4841 return ctx->quiet_shutdown;
4844 void SSL_set_quiet_shutdown(SSL *s, int mode)
4846 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4848 /* TODO(QUIC): Do we want this for QUIC? */
4852 sc->quiet_shutdown = mode;
4855 int SSL_get_quiet_shutdown(const SSL *s)
4857 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4859 /* TODO(QUIC): Do we want this for QUIC? */
4863 return sc->quiet_shutdown;
4866 void SSL_set_shutdown(SSL *s, int mode)
4868 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4870 /* TODO(QUIC): Do we want this for QUIC? */
4874 sc->shutdown = mode;
4877 int SSL_get_shutdown(const SSL *s)
4879 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4881 /* TODO(QUIC): Do we want this for QUIC? */
4885 return sc->shutdown;
4888 int SSL_version(const SSL *s)
4890 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4892 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4899 int SSL_client_version(const SSL *s)
4901 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4903 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4907 return sc->client_version;
4910 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4915 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4918 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4920 /* TODO(QUIC): Do we need this for QUIC support? */
4924 if (ssl->ctx == ctx)
4927 ctx = sc->session_ctx;
4928 new_cert = ssl_cert_dup(ctx->cert);
4929 if (new_cert == NULL) {
4933 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4934 ssl_cert_free(new_cert);
4938 ssl_cert_free(sc->cert);
4939 sc->cert = new_cert;
4942 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4943 * so setter APIs must prevent invalid lengths from entering the system.
4945 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4949 * If the session ID context matches that of the parent SSL_CTX,
4950 * inherit it from the new SSL_CTX as well. If however the context does
4951 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4952 * leave it unchanged.
4954 if ((ssl->ctx != NULL) &&
4955 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4956 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4957 sc->sid_ctx_length = ctx->sid_ctx_length;
4958 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4961 SSL_CTX_up_ref(ctx);
4962 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4968 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4970 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4974 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4976 X509_LOOKUP *lookup;
4978 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4982 /* We ignore errors, in case the directory doesn't exist */
4985 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4992 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4994 X509_LOOKUP *lookup;
4996 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5000 /* We ignore errors, in case the file doesn't exist */
5003 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5011 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5013 X509_LOOKUP *lookup;
5015 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5019 /* We ignore errors, in case the directory doesn't exist */
5022 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5029 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5031 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5035 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5037 return X509_STORE_load_path(ctx->cert_store, CApath);
5040 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5042 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5046 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5049 if (CAfile == NULL && CApath == NULL)
5051 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5053 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5058 void SSL_set_info_callback(SSL *ssl,
5059 void (*cb) (const SSL *ssl, int type, int val))
5061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5066 sc->info_callback = cb;
5070 * One compiler (Diab DCC) doesn't like argument names in returned function
5073 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5076 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5081 return sc->info_callback;
5084 void SSL_set_verify_result(SSL *ssl, long arg)
5086 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5091 sc->verify_result = arg;
5094 long SSL_get_verify_result(const SSL *ssl)
5096 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5101 return sc->verify_result;
5104 size_t SSL_get_client_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.client_random);
5113 if (outlen > sizeof(sc->s3.client_random))
5114 outlen = sizeof(sc->s3.client_random);
5115 memcpy(out, sc->s3.client_random, outlen);
5119 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5121 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5127 return sizeof(sc->s3.server_random);
5128 if (outlen > sizeof(sc->s3.server_random))
5129 outlen = sizeof(sc->s3.server_random);
5130 memcpy(out, sc->s3.server_random, outlen);
5134 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5135 unsigned char *out, size_t outlen)
5138 return session->master_key_length;
5139 if (outlen > session->master_key_length)
5140 outlen = session->master_key_length;
5141 memcpy(out, session->master_key, outlen);
5145 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5148 if (len > sizeof(sess->master_key))
5151 memcpy(sess->master_key, in, len);
5152 sess->master_key_length = len;
5157 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5159 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5162 void *SSL_get_ex_data(const SSL *s, int idx)
5164 return CRYPTO_get_ex_data(&s->ex_data, idx);
5167 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5169 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5172 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5174 return CRYPTO_get_ex_data(&s->ex_data, idx);
5177 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5179 return ctx->cert_store;
5182 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5184 X509_STORE_free(ctx->cert_store);
5185 ctx->cert_store = store;
5188 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5191 X509_STORE_up_ref(store);
5192 SSL_CTX_set_cert_store(ctx, store);
5195 int SSL_want(const SSL *s)
5197 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5205 #ifndef OPENSSL_NO_PSK
5206 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5208 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5209 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5212 OPENSSL_free(ctx->cert->psk_identity_hint);
5213 if (identity_hint != NULL) {
5214 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5215 if (ctx->cert->psk_identity_hint == NULL)
5218 ctx->cert->psk_identity_hint = NULL;
5222 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5224 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5229 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5230 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5233 OPENSSL_free(sc->cert->psk_identity_hint);
5234 if (identity_hint != NULL) {
5235 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5236 if (sc->cert->psk_identity_hint == NULL)
5239 sc->cert->psk_identity_hint = NULL;
5243 const char *SSL_get_psk_identity_hint(const SSL *s)
5245 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5247 if (sc == NULL || sc->session == NULL)
5250 return sc->session->psk_identity_hint;
5253 const char *SSL_get_psk_identity(const SSL *s)
5255 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5257 if (sc == NULL || sc->session == NULL)
5260 return sc->session->psk_identity;
5263 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5270 sc->psk_client_callback = cb;
5273 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5275 ctx->psk_client_callback = cb;
5278 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5280 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5285 sc->psk_server_callback = cb;
5288 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5290 ctx->psk_server_callback = cb;
5294 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5296 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5301 sc->psk_find_session_cb = cb;
5304 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5305 SSL_psk_find_session_cb_func cb)
5307 ctx->psk_find_session_cb = cb;
5310 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5312 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5317 sc->psk_use_session_cb = cb;
5320 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5321 SSL_psk_use_session_cb_func cb)
5323 ctx->psk_use_session_cb = cb;
5326 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5327 void (*cb) (int write_p, int version,
5328 int content_type, const void *buf,
5329 size_t len, SSL *ssl, void *arg))
5331 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5334 void SSL_set_msg_callback(SSL *ssl,
5335 void (*cb) (int write_p, int version,
5336 int content_type, const void *buf,
5337 size_t len, SSL *ssl, void *arg))
5339 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5342 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5343 int (*cb) (SSL *ssl,
5347 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5348 (void (*)(void))cb);
5351 void SSL_set_not_resumable_session_callback(SSL *ssl,
5352 int (*cb) (SSL *ssl,
5353 int is_forward_secure))
5355 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5356 (void (*)(void))cb);
5359 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5360 size_t (*cb) (SSL *ssl, int type,
5361 size_t len, void *arg))
5363 ctx->record_padding_cb = cb;
5366 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5368 ctx->record_padding_arg = arg;
5371 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5373 return ctx->record_padding_arg;
5376 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5378 /* block size of 0 or 1 is basically no padding */
5379 if (block_size == 1)
5380 ctx->block_padding = 0;
5381 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5382 ctx->block_padding = block_size;
5388 int SSL_set_record_padding_callback(SSL *ssl,
5389 size_t (*cb) (SSL *ssl, int type,
5390 size_t len, void *arg))
5393 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5398 b = SSL_get_wbio(ssl);
5399 if (b == NULL || !BIO_get_ktls_send(b)) {
5400 sc->record_padding_cb = cb;
5406 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5408 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5413 sc->record_padding_arg = arg;
5416 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5418 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5423 return sc->record_padding_arg;
5426 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5428 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5433 /* block size of 0 or 1 is basically no padding */
5434 if (block_size == 1)
5435 sc->block_padding = 0;
5436 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5437 sc->block_padding = block_size;
5443 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5445 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5450 sc->num_tickets = num_tickets;
5455 size_t SSL_get_num_tickets(const SSL *s)
5457 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5462 return sc->num_tickets;
5465 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5467 ctx->num_tickets = num_tickets;
5472 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5474 return ctx->num_tickets;
5478 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5479 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5480 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5481 * Returns the newly allocated ctx;
5484 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5486 ssl_clear_hash_ctx(hash);
5487 *hash = EVP_MD_CTX_new();
5488 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5489 EVP_MD_CTX_free(*hash);
5496 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5499 EVP_MD_CTX_free(*hash);
5503 /* Retrieve handshake hashes */
5504 int ssl_handshake_hash(SSL_CONNECTION *s,
5505 unsigned char *out, size_t outlen,
5508 EVP_MD_CTX *ctx = NULL;
5509 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5510 int hashleni = EVP_MD_CTX_get_size(hdgst);
5513 if (hashleni < 0 || (size_t)hashleni > outlen) {
5514 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5518 ctx = EVP_MD_CTX_new();
5520 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5524 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5525 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5526 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5530 *hashlen = hashleni;
5534 EVP_MD_CTX_free(ctx);
5538 int SSL_session_reused(const SSL *s)
5540 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5548 int SSL_is_server(const SSL *s)
5550 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5558 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5559 void SSL_set_debug(SSL *s, int debug)
5561 /* Old function was do-nothing anyway... */
5567 void SSL_set_security_level(SSL *s, int level)
5569 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5574 sc->cert->sec_level = level;
5577 int SSL_get_security_level(const SSL *s)
5579 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5584 return sc->cert->sec_level;
5587 void SSL_set_security_callback(SSL *s,
5588 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5589 int op, int bits, int nid,
5590 void *other, void *ex))
5592 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5597 sc->cert->sec_cb = cb;
5600 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5601 const SSL_CTX *ctx, int op,
5602 int bits, int nid, void *other,
5604 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5609 return sc->cert->sec_cb;
5612 void SSL_set0_security_ex_data(SSL *s, void *ex)
5614 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5619 sc->cert->sec_ex = ex;
5622 void *SSL_get0_security_ex_data(const SSL *s)
5624 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5629 return sc->cert->sec_ex;
5632 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5634 ctx->cert->sec_level = level;
5637 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5639 return ctx->cert->sec_level;
5642 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5643 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5644 int op, int bits, int nid,
5645 void *other, void *ex))
5647 ctx->cert->sec_cb = cb;
5650 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5656 return ctx->cert->sec_cb;
5659 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5661 ctx->cert->sec_ex = ex;
5664 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5666 return ctx->cert->sec_ex;
5669 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5671 return ctx->options;
5674 uint64_t SSL_get_options(const SSL *s)
5676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5684 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5686 return ctx->options |= op;
5689 uint64_t SSL_set_options(SSL *s, uint64_t op)
5691 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5692 OSSL_PARAM options[2], *opts = options;
5699 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5701 *opts = OSSL_PARAM_construct_end();
5703 /* Ignore return value */
5704 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5709 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5711 return ctx->options &= ~op;
5714 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5721 return sc->options &= ~op;
5724 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5726 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5731 return sc->verified_chain;
5734 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5736 #ifndef OPENSSL_NO_CT
5739 * Moves SCTs from the |src| stack to the |dst| stack.
5740 * The source of each SCT will be set to |origin|.
5741 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5743 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5745 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5746 sct_source_t origin)
5752 *dst = sk_SCT_new_null();
5754 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5759 while (sk_SCT_num(src) > 0) {
5760 sct = sk_SCT_pop(src);
5761 if (SCT_set_source(sct, origin) != 1)
5764 if (sk_SCT_push(*dst, sct) <= 0)
5772 sk_SCT_push(src, sct); /* Put the SCT back */
5777 * Look for data collected during ServerHello and parse if found.
5778 * Returns the number of SCTs extracted.
5780 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5782 int scts_extracted = 0;
5784 if (s->ext.scts != NULL) {
5785 const unsigned char *p = s->ext.scts;
5786 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5788 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5790 SCT_LIST_free(scts);
5793 return scts_extracted;
5797 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5798 * contains an SCT X509 extension. They will be stored in |s->scts|.
5800 * - The number of SCTs extracted, assuming an OCSP response exists.
5801 * - 0 if no OCSP response exists or it contains no SCTs.
5802 * - A negative integer if an error occurs.
5804 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5806 # ifndef OPENSSL_NO_OCSP
5807 int scts_extracted = 0;
5808 const unsigned char *p;
5809 OCSP_BASICRESP *br = NULL;
5810 OCSP_RESPONSE *rsp = NULL;
5811 STACK_OF(SCT) *scts = NULL;
5814 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5817 p = s->ext.ocsp.resp;
5818 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5822 br = OCSP_response_get1_basic(rsp);
5826 for (i = 0; i < OCSP_resp_count(br); ++i) {
5827 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5833 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5835 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5836 if (scts_extracted < 0)
5840 SCT_LIST_free(scts);
5841 OCSP_BASICRESP_free(br);
5842 OCSP_RESPONSE_free(rsp);
5843 return scts_extracted;
5845 /* Behave as if no OCSP response exists */
5851 * Attempts to extract SCTs from the peer certificate.
5852 * Return the number of SCTs extracted, or a negative integer if an error
5855 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5857 int scts_extracted = 0;
5858 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5861 STACK_OF(SCT) *scts =
5862 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5865 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5867 SCT_LIST_free(scts);
5870 return scts_extracted;
5874 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5875 * response (if it exists) and X509v3 extensions in the certificate.
5876 * Returns NULL if an error occurs.
5878 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5880 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5885 if (!sc->scts_parsed) {
5886 if (ct_extract_tls_extension_scts(sc) < 0 ||
5887 ct_extract_ocsp_response_scts(sc) < 0 ||
5888 ct_extract_x509v3_extension_scts(sc) < 0)
5891 sc->scts_parsed = 1;
5898 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5899 const STACK_OF(SCT) *scts, void *unused_arg)
5904 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5905 const STACK_OF(SCT) *scts, void *unused_arg)
5907 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5910 for (i = 0; i < count; ++i) {
5911 SCT *sct = sk_SCT_value(scts, i);
5912 int status = SCT_get_validation_status(sct);
5914 if (status == SCT_VALIDATION_STATUS_VALID)
5917 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5921 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5924 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5930 * Since code exists that uses the custom extension handler for CT, look
5931 * for this and throw an error if they have already registered to use CT.
5933 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5934 TLSEXT_TYPE_signed_certificate_timestamp))
5936 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5940 if (callback != NULL) {
5942 * If we are validating CT, then we MUST accept SCTs served via OCSP
5944 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5948 sc->ct_validation_callback = callback;
5949 sc->ct_validation_callback_arg = arg;
5954 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5955 ssl_ct_validation_cb callback, void *arg)
5958 * Since code exists that uses the custom extension handler for CT, look for
5959 * this and throw an error if they have already registered to use CT.
5961 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5962 TLSEXT_TYPE_signed_certificate_timestamp))
5964 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5968 ctx->ct_validation_callback = callback;
5969 ctx->ct_validation_callback_arg = arg;
5973 int SSL_ct_is_enabled(const SSL *s)
5975 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5980 return sc->ct_validation_callback != NULL;
5983 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5985 return ctx->ct_validation_callback != NULL;
5988 int ssl_validate_ct(SSL_CONNECTION *s)
5991 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5993 SSL_DANE *dane = &s->dane;
5994 CT_POLICY_EVAL_CTX *ctx = NULL;
5995 const STACK_OF(SCT) *scts;
5998 * If no callback is set, the peer is anonymous, or its chain is invalid,
5999 * skip SCT validation - just return success. Applications that continue
6000 * handshakes without certificates, with unverified chains, or pinned leaf
6001 * certificates are outside the scope of the WebPKI and CT.
6003 * The above exclusions notwithstanding the vast majority of peers will
6004 * have rather ordinary certificate chains validated by typical
6005 * applications that perform certificate verification and therefore will
6006 * process SCTs when enabled.
6008 if (s->ct_validation_callback == NULL || cert == NULL ||
6009 s->verify_result != X509_V_OK ||
6010 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6014 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6015 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6017 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6018 switch (dane->mtlsa->usage) {
6019 case DANETLS_USAGE_DANE_TA:
6020 case DANETLS_USAGE_DANE_EE:
6025 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6026 SSL_CONNECTION_GET_CTX(s)->propq);
6028 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6032 issuer = sk_X509_value(s->verified_chain, 1);
6033 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6034 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6035 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6036 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6037 CT_POLICY_EVAL_CTX_set_time(
6038 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6040 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6043 * This function returns success (> 0) only when all the SCTs are valid, 0
6044 * when some are invalid, and < 0 on various internal errors (out of
6045 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6046 * reason to abort the handshake, that decision is up to the callback.
6047 * Therefore, we error out only in the unexpected case that the return
6048 * value is negative.
6050 * XXX: One might well argue that the return value of this function is an
6051 * unfortunate design choice. Its job is only to determine the validation
6052 * status of each of the provided SCTs. So long as it correctly separates
6053 * the wheat from the chaff it should return success. Failure in this case
6054 * ought to correspond to an inability to carry out its duties.
6056 if (SCT_LIST_validate(scts, ctx) < 0) {
6057 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6061 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6063 ret = 0; /* This function returns 0 on failure */
6065 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6068 CT_POLICY_EVAL_CTX_free(ctx);
6070 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6071 * failure return code here. Also the application may wish the complete
6072 * the handshake, and then disconnect cleanly at a higher layer, after
6073 * checking the verification status of the completed connection.
6075 * We therefore force a certificate verification failure which will be
6076 * visible via SSL_get_verify_result() and cached as part of any resumed
6079 * Note: the permissive callback is for information gathering only, always
6080 * returns success, and does not affect verification status. Only the
6081 * strict callback or a custom application-specified callback can trigger
6082 * connection failure or record a verification error.
6085 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6089 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6091 switch (validation_mode) {
6093 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6095 case SSL_CT_VALIDATION_PERMISSIVE:
6096 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6097 case SSL_CT_VALIDATION_STRICT:
6098 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6102 int SSL_enable_ct(SSL *s, int validation_mode)
6104 switch (validation_mode) {
6106 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6108 case SSL_CT_VALIDATION_PERMISSIVE:
6109 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6110 case SSL_CT_VALIDATION_STRICT:
6111 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6115 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6117 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6120 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6122 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6125 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6127 CTLOG_STORE_free(ctx->ctlog_store);
6128 ctx->ctlog_store = logs;
6131 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6133 return ctx->ctlog_store;
6136 #endif /* OPENSSL_NO_CT */
6138 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6141 c->client_hello_cb = cb;
6142 c->client_hello_cb_arg = arg;
6145 int SSL_client_hello_isv2(SSL *s)
6147 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6152 if (sc->clienthello == NULL)
6154 return sc->clienthello->isv2;
6157 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6159 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6164 if (sc->clienthello == NULL)
6166 return sc->clienthello->legacy_version;
6169 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6171 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6176 if (sc->clienthello == NULL)
6179 *out = sc->clienthello->random;
6180 return SSL3_RANDOM_SIZE;
6183 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6185 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6190 if (sc->clienthello == NULL)
6193 *out = sc->clienthello->session_id;
6194 return sc->clienthello->session_id_len;
6197 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6199 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6204 if (sc->clienthello == NULL)
6207 *out = PACKET_data(&sc->clienthello->ciphersuites);
6208 return PACKET_remaining(&sc->clienthello->ciphersuites);
6211 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6213 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6218 if (sc->clienthello == NULL)
6221 *out = sc->clienthello->compressions;
6222 return sc->clienthello->compressions_len;
6225 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6235 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6237 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6238 ext = sc->clienthello->pre_proc_exts + i;
6247 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6248 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6251 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6252 ext = sc->clienthello->pre_proc_exts + i;
6254 if (ext->received_order >= num)
6256 present[ext->received_order] = ext->type;
6263 OPENSSL_free(present);
6267 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6271 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6276 if (sc->clienthello == NULL || num_exts == NULL)
6278 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6279 ext = sc->clienthello->pre_proc_exts + i;
6291 if (*num_exts < num)
6293 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6294 ext = sc->clienthello->pre_proc_exts + i;
6296 if (ext->received_order >= num)
6298 exts[ext->received_order] = ext->type;
6305 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6310 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6315 if (sc->clienthello == NULL)
6317 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6318 r = sc->clienthello->pre_proc_exts + i;
6319 if (r->present && r->type == type) {
6321 *out = PACKET_data(&r->data);
6323 *outlen = PACKET_remaining(&r->data);
6330 int SSL_free_buffers(SSL *ssl)
6333 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6340 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6343 RECORD_LAYER_release(rl);
6347 int SSL_alloc_buffers(SSL *ssl)
6349 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6354 return ssl3_setup_buffers(sc);
6357 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6359 ctx->keylog_callback = cb;
6362 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6364 return ctx->keylog_callback;
6367 static int nss_keylog_int(const char *prefix,
6369 const uint8_t *parameter_1,
6370 size_t parameter_1_len,
6371 const uint8_t *parameter_2,
6372 size_t parameter_2_len)
6375 char *cursor = NULL;
6379 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6381 if (sctx->keylog_callback == NULL)
6385 * Our output buffer will contain the following strings, rendered with
6386 * space characters in between, terminated by a NULL character: first the
6387 * prefix, then the first parameter, then the second parameter. The
6388 * meaning of each parameter depends on the specific key material being
6389 * logged. Note that the first and second parameters are encoded in
6390 * hexadecimal, so we need a buffer that is twice their lengths.
6392 prefix_len = strlen(prefix);
6393 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6394 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6395 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6399 strcpy(cursor, prefix);
6400 cursor += prefix_len;
6403 for (i = 0; i < parameter_1_len; i++) {
6404 sprintf(cursor, "%02x", parameter_1[i]);
6409 for (i = 0; i < parameter_2_len; i++) {
6410 sprintf(cursor, "%02x", parameter_2[i]);
6415 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6416 OPENSSL_clear_free(out, out_len);
6421 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6422 const uint8_t *encrypted_premaster,
6423 size_t encrypted_premaster_len,
6424 const uint8_t *premaster,
6425 size_t premaster_len)
6427 if (encrypted_premaster_len < 8) {
6428 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6432 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6433 return nss_keylog_int("RSA",
6435 encrypted_premaster,
6441 int ssl_log_secret(SSL_CONNECTION *sc,
6443 const uint8_t *secret,
6446 return nss_keylog_int(label,
6448 sc->s3.client_random,
6454 #define SSLV2_CIPHER_LEN 3
6456 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6460 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6462 if (PACKET_remaining(cipher_suites) == 0) {
6463 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6467 if (PACKET_remaining(cipher_suites) % n != 0) {
6468 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6472 OPENSSL_free(s->s3.tmp.ciphers_raw);
6473 s->s3.tmp.ciphers_raw = NULL;
6474 s->s3.tmp.ciphers_rawlen = 0;
6477 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6478 PACKET sslv2ciphers = *cipher_suites;
6479 unsigned int leadbyte;
6483 * We store the raw ciphers list in SSLv3+ format so we need to do some
6484 * preprocessing to convert the list first. If there are any SSLv2 only
6485 * ciphersuites with a non-zero leading byte then we are going to
6486 * slightly over allocate because we won't store those. But that isn't a
6489 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6490 s->s3.tmp.ciphers_raw = raw;
6492 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6495 for (s->s3.tmp.ciphers_rawlen = 0;
6496 PACKET_remaining(&sslv2ciphers) > 0;
6497 raw += TLS_CIPHER_LEN) {
6498 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6500 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6503 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6504 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6505 OPENSSL_free(s->s3.tmp.ciphers_raw);
6506 s->s3.tmp.ciphers_raw = NULL;
6507 s->s3.tmp.ciphers_rawlen = 0;
6511 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6513 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6514 &s->s3.tmp.ciphers_rawlen)) {
6515 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6521 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6522 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6523 STACK_OF(SSL_CIPHER) **scsvs)
6526 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6531 if (!PACKET_buf_init(&pkt, bytes, len))
6533 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6536 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6537 STACK_OF(SSL_CIPHER) **skp,
6538 STACK_OF(SSL_CIPHER) **scsvs_out,
6539 int sslv2format, int fatal)
6541 const SSL_CIPHER *c;
6542 STACK_OF(SSL_CIPHER) *sk = NULL;
6543 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6545 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6546 unsigned char cipher[SSLV2_CIPHER_LEN];
6548 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6550 if (PACKET_remaining(cipher_suites) == 0) {
6552 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6554 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6558 if (PACKET_remaining(cipher_suites) % n != 0) {
6560 SSLfatal(s, SSL_AD_DECODE_ERROR,
6561 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6563 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6567 sk = sk_SSL_CIPHER_new_null();
6568 scsvs = sk_SSL_CIPHER_new_null();
6569 if (sk == NULL || scsvs == NULL) {
6571 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6573 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6577 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6579 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6580 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6581 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6583 if (sslv2format && cipher[0] != '\0')
6586 /* For SSLv2-compat, ignore leading 0-byte. */
6587 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6589 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6590 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6592 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6594 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6599 if (PACKET_remaining(cipher_suites) > 0) {
6601 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6603 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6610 sk_SSL_CIPHER_free(sk);
6611 if (scsvs_out != NULL)
6614 sk_SSL_CIPHER_free(scsvs);
6617 sk_SSL_CIPHER_free(sk);
6618 sk_SSL_CIPHER_free(scsvs);
6622 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6624 ctx->max_early_data = max_early_data;
6629 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6631 return ctx->max_early_data;
6634 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6636 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6641 sc->max_early_data = max_early_data;
6646 uint32_t SSL_get_max_early_data(const SSL *s)
6648 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6653 return sc->max_early_data;
6656 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6658 ctx->recv_max_early_data = recv_max_early_data;
6663 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6665 return ctx->recv_max_early_data;
6668 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6670 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6675 sc->recv_max_early_data = recv_max_early_data;
6680 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6682 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6687 return sc->recv_max_early_data;
6690 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6692 /* Return any active Max Fragment Len extension */
6693 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6694 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6696 /* return current SSL connection setting */
6697 return sc->max_send_fragment;
6700 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6702 /* Return a value regarding an active Max Fragment Len extension */
6703 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6704 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6705 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6707 /* else limit |split_send_fragment| to current |max_send_fragment| */
6708 if (sc->split_send_fragment > sc->max_send_fragment)
6709 return sc->max_send_fragment;
6711 /* return current SSL connection setting */
6712 return sc->split_send_fragment;
6715 int SSL_stateless(SSL *s)
6718 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6720 /* TODO(QUIC): This will need further work. */
6724 /* Ensure there is no state left over from a previous invocation */
6730 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6731 ret = SSL_accept(s);
6732 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6734 if (ret > 0 && sc->ext.cookieok)
6737 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6743 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6745 ctx->pha_enabled = val;
6748 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6750 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6755 sc->pha_enabled = val;
6758 int SSL_verify_client_post_handshake(SSL *ssl)
6760 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6765 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6766 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6770 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6774 if (!SSL_is_init_finished(ssl)) {
6775 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6779 switch (sc->post_handshake_auth) {
6781 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6784 case SSL_PHA_EXT_SENT:
6785 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6787 case SSL_PHA_EXT_RECEIVED:
6789 case SSL_PHA_REQUEST_PENDING:
6790 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6792 case SSL_PHA_REQUESTED:
6793 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6797 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6799 /* checks verify_mode and algorithm_auth */
6800 if (!send_certificate_request(sc)) {
6801 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6802 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6806 ossl_statem_set_in_init(sc, 1);
6810 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6811 SSL_CTX_generate_session_ticket_fn gen_cb,
6812 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6815 ctx->generate_ticket_cb = gen_cb;
6816 ctx->decrypt_ticket_cb = dec_cb;
6817 ctx->ticket_cb_data = arg;
6821 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6822 SSL_allow_early_data_cb_fn cb,
6825 ctx->allow_early_data_cb = cb;
6826 ctx->allow_early_data_cb_data = arg;
6829 void SSL_set_allow_early_data_cb(SSL *s,
6830 SSL_allow_early_data_cb_fn cb,
6833 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6838 sc->allow_early_data_cb = cb;
6839 sc->allow_early_data_cb_data = arg;
6842 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6844 const char *properties)
6846 const EVP_CIPHER *ciph;
6848 ciph = tls_get_cipher_from_engine(nid);
6853 * If there is no engine cipher then we do an explicit fetch. This may fail
6854 * and that could be ok
6857 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6863 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6865 /* Don't up-ref an implicit EVP_CIPHER */
6866 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6870 * The cipher was explicitly fetched and therefore it is safe to cast
6873 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6876 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6881 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6883 * The cipher was explicitly fetched and therefore it is safe to cast
6886 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6890 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6892 const char *properties)
6896 md = tls_get_digest_from_engine(nid);
6900 /* Otherwise we do an explicit fetch */
6902 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6907 int ssl_evp_md_up_ref(const EVP_MD *md)
6909 /* Don't up-ref an implicit EVP_MD */
6910 if (EVP_MD_get0_provider(md) == NULL)
6914 * The digest was explicitly fetched and therefore it is safe to cast
6917 return EVP_MD_up_ref((EVP_MD *)md);
6920 void ssl_evp_md_free(const EVP_MD *md)
6925 if (EVP_MD_get0_provider(md) != NULL) {
6927 * The digest was explicitly fetched and therefore it is safe to cast
6930 EVP_MD_free((EVP_MD *)md);
6934 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6936 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6941 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6942 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6943 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6946 EVP_PKEY_free(sc->cert->dh_tmp);
6947 sc->cert->dh_tmp = dhpkey;
6951 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6953 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6954 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6955 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6958 EVP_PKEY_free(ctx->cert->dh_tmp);
6959 ctx->cert->dh_tmp = dhpkey;