2 * Copyright 1995-2017 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 OpenSSL license (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
14 #include <openssl/objects.h>
15 #include <openssl/x509v3.h>
16 #include <openssl/rand.h>
17 #include <openssl/ocsp.h>
18 #include <openssl/dh.h>
19 #include <openssl/engine.h>
20 #include <openssl/async.h>
21 #include <openssl/ct.h>
22 #include "internal/cryptlib.h"
23 #include "internal/rand.h"
24 #include "internal/refcount.h"
26 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
28 SSL3_ENC_METHOD ssl3_undef_enc_method = {
30 * evil casts, but these functions are only called if there's a library
33 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
34 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
35 ssl_undefined_function,
36 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
37 ssl_undefined_function,
38 (int (*)(SSL *, int))ssl_undefined_function,
39 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
40 ssl_undefined_function,
41 NULL, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function,
46 (int (*)(SSL *, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context))ssl_undefined_function,
51 struct ssl_async_args {
55 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
57 int (*func_read) (SSL *, void *, size_t, size_t *);
58 int (*func_write) (SSL *, const void *, size_t, size_t *);
59 int (*func_other) (SSL *);
69 DANETLS_MATCHING_FULL, 0, NID_undef
72 DANETLS_MATCHING_2256, 1, NID_sha256
75 DANETLS_MATCHING_2512, 2, NID_sha512
79 static int dane_ctx_enable(struct dane_ctx_st *dctx)
83 uint8_t mdmax = DANETLS_MATCHING_LAST;
84 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
87 if (dctx->mdevp != NULL)
90 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
91 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
93 if (mdord == NULL || mdevp == NULL) {
96 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
100 /* Install default entries */
101 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
104 if (dane_mds[i].nid == NID_undef ||
105 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
107 mdevp[dane_mds[i].mtype] = md;
108 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
118 static void dane_ctx_final(struct dane_ctx_st *dctx)
120 OPENSSL_free(dctx->mdevp);
123 OPENSSL_free(dctx->mdord);
128 static void tlsa_free(danetls_record *t)
132 OPENSSL_free(t->data);
133 EVP_PKEY_free(t->spki);
137 static void dane_final(SSL_DANE *dane)
139 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
142 sk_X509_pop_free(dane->certs, X509_free);
145 X509_free(dane->mcert);
153 * dane_copy - Copy dane configuration, sans verification state.
155 static int ssl_dane_dup(SSL *to, SSL *from)
160 if (!DANETLS_ENABLED(&from->dane))
163 num = sk_danetls_record_num(from->dane.trecs);
164 dane_final(&to->dane);
165 to->dane.flags = from->dane.flags;
166 to->dane.dctx = &to->ctx->dane;
167 to->dane.trecs = sk_danetls_record_new_null();
169 if (to->dane.trecs == NULL) {
170 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
173 if (!sk_danetls_record_reserve(to->dane.trecs, num))
176 for (i = 0; i < num; ++i) {
177 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
179 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
180 t->data, t->dlen) <= 0)
186 static int dane_mtype_set(struct dane_ctx_st *dctx,
187 const EVP_MD *md, uint8_t mtype, uint8_t ord)
191 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
192 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
196 if (mtype > dctx->mdmax) {
197 const EVP_MD **mdevp;
199 int n = ((int)mtype) + 1;
201 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
203 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
208 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
210 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
215 /* Zero-fill any gaps */
216 for (i = dctx->mdmax + 1; i < mtype; ++i) {
224 dctx->mdevp[mtype] = md;
225 /* Coerce ordinal of disabled matching types to 0 */
226 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
231 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
233 if (mtype > dane->dctx->mdmax)
235 return dane->dctx->mdevp[mtype];
238 static int dane_tlsa_add(SSL_DANE *dane,
241 uint8_t mtype, unsigned char *data, size_t dlen)
244 const EVP_MD *md = NULL;
245 int ilen = (int)dlen;
249 if (dane->trecs == NULL) {
250 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
254 if (ilen < 0 || dlen != (size_t)ilen) {
255 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
259 if (usage > DANETLS_USAGE_LAST) {
260 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
264 if (selector > DANETLS_SELECTOR_LAST) {
265 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
269 if (mtype != DANETLS_MATCHING_FULL) {
270 md = tlsa_md_get(dane, mtype);
272 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
277 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
278 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
282 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
286 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
287 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
292 t->selector = selector;
294 t->data = OPENSSL_malloc(dlen);
295 if (t->data == NULL) {
297 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
300 memcpy(t->data, data, dlen);
303 /* Validate and cache full certificate or public key */
304 if (mtype == DANETLS_MATCHING_FULL) {
305 const unsigned char *p = data;
307 EVP_PKEY *pkey = NULL;
310 case DANETLS_SELECTOR_CERT:
311 if (!d2i_X509(&cert, &p, ilen) || p < data ||
312 dlen != (size_t)(p - data)) {
314 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
317 if (X509_get0_pubkey(cert) == NULL) {
319 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
323 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
329 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
330 * records that contain full certificates of trust-anchors that are
331 * not present in the wire chain. For usage PKIX-TA(0), we augment
332 * the chain with untrusted Full(0) certificates from DNS, in case
333 * they are missing from the chain.
335 if ((dane->certs == NULL &&
336 (dane->certs = sk_X509_new_null()) == NULL) ||
337 !sk_X509_push(dane->certs, cert)) {
338 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
345 case DANETLS_SELECTOR_SPKI:
346 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
347 dlen != (size_t)(p - data)) {
349 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
354 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
355 * records that contain full bare keys of trust-anchors that are
356 * not present in the wire chain.
358 if (usage == DANETLS_USAGE_DANE_TA)
367 * Find the right insertion point for the new record.
369 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
370 * they can be processed first, as they require no chain building, and no
371 * expiration or hostname checks. Because DANE-EE(3) is numerically
372 * largest, this is accomplished via descending sort by "usage".
374 * We also sort in descending order by matching ordinal to simplify
375 * the implementation of digest agility in the verification code.
377 * The choice of order for the selector is not significant, so we
378 * use the same descending order for consistency.
380 num = sk_danetls_record_num(dane->trecs);
381 for (i = 0; i < num; ++i) {
382 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
384 if (rec->usage > usage)
386 if (rec->usage < usage)
388 if (rec->selector > selector)
390 if (rec->selector < selector)
392 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
397 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
399 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
402 dane->umask |= DANETLS_USAGE_BIT(usage);
408 * Return 0 if there is only one version configured and it was disabled
409 * at configure time. Return 1 otherwise.
411 static int ssl_check_allowed_versions(int min_version, int max_version)
413 int minisdtls = 0, maxisdtls = 0;
415 /* Figure out if we're doing DTLS versions or TLS versions */
416 if (min_version == DTLS1_BAD_VER
417 || min_version >> 8 == DTLS1_VERSION_MAJOR)
419 if (max_version == DTLS1_BAD_VER
420 || max_version >> 8 == DTLS1_VERSION_MAJOR)
422 /* A wildcard version of 0 could be DTLS or TLS. */
423 if ((minisdtls && !maxisdtls && max_version != 0)
424 || (maxisdtls && !minisdtls && min_version != 0)) {
425 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
429 if (minisdtls || maxisdtls) {
430 /* Do DTLS version checks. */
431 if (min_version == 0)
432 /* Ignore DTLS1_BAD_VER */
433 min_version = DTLS1_VERSION;
434 if (max_version == 0)
435 max_version = DTLS1_2_VERSION;
436 #ifdef OPENSSL_NO_DTLS1_2
437 if (max_version == DTLS1_2_VERSION)
438 max_version = DTLS1_VERSION;
440 #ifdef OPENSSL_NO_DTLS1
441 if (min_version == DTLS1_VERSION)
442 min_version = DTLS1_2_VERSION;
444 /* Done massaging versions; do the check. */
446 #ifdef OPENSSL_NO_DTLS1
447 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
448 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
450 #ifdef OPENSSL_NO_DTLS1_2
451 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
452 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
457 /* Regular TLS version checks. */
458 if (min_version == 0)
459 min_version = SSL3_VERSION;
460 if (max_version == 0)
461 max_version = TLS1_3_VERSION;
462 #ifdef OPENSSL_NO_TLS1_3
463 if (max_version == TLS1_3_VERSION)
464 max_version = TLS1_2_VERSION;
466 #ifdef OPENSSL_NO_TLS1_2
467 if (max_version == TLS1_2_VERSION)
468 max_version = TLS1_1_VERSION;
470 #ifdef OPENSSL_NO_TLS1_1
471 if (max_version == TLS1_1_VERSION)
472 max_version = TLS1_VERSION;
474 #ifdef OPENSSL_NO_TLS1
475 if (max_version == TLS1_VERSION)
476 max_version = SSL3_VERSION;
478 #ifdef OPENSSL_NO_SSL3
479 if (min_version == SSL3_VERSION)
480 min_version = TLS1_VERSION;
482 #ifdef OPENSSL_NO_TLS1
483 if (min_version == TLS1_VERSION)
484 min_version = TLS1_1_VERSION;
486 #ifdef OPENSSL_NO_TLS1_1
487 if (min_version == TLS1_1_VERSION)
488 min_version = TLS1_2_VERSION;
490 #ifdef OPENSSL_NO_TLS1_2
491 if (min_version == TLS1_2_VERSION)
492 min_version = TLS1_3_VERSION;
494 /* Done massaging versions; do the check. */
496 #ifdef OPENSSL_NO_SSL3
497 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
499 #ifdef OPENSSL_NO_TLS1
500 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
502 #ifdef OPENSSL_NO_TLS1_1
503 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
505 #ifdef OPENSSL_NO_TLS1_2
506 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
508 #ifdef OPENSSL_NO_TLS1_3
509 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
517 static void clear_ciphers(SSL *s)
519 /* clear the current cipher */
520 ssl_clear_cipher_ctx(s);
521 ssl_clear_hash_ctx(&s->read_hash);
522 ssl_clear_hash_ctx(&s->write_hash);
525 int SSL_clear(SSL *s)
527 if (s->method == NULL) {
528 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
532 if (ssl_clear_bad_session(s)) {
533 SSL_SESSION_free(s->session);
536 SSL_SESSION_free(s->psksession);
537 s->psksession = NULL;
538 OPENSSL_free(s->psksession_id);
539 s->psksession_id = NULL;
540 s->psksession_id_len = 0;
546 if (s->renegotiate) {
547 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
551 ossl_statem_clear(s);
553 s->version = s->method->version;
554 s->client_version = s->version;
555 s->rwstate = SSL_NOTHING;
557 BUF_MEM_free(s->init_buf);
562 s->key_update = SSL_KEY_UPDATE_NONE;
564 /* Reset DANE verification result state */
567 X509_free(s->dane.mcert);
568 s->dane.mcert = NULL;
569 s->dane.mtlsa = NULL;
571 /* Clear the verification result peername */
572 X509_VERIFY_PARAM_move_peername(s->param, NULL);
575 * Check to see if we were changed into a different method, if so, revert
578 if (s->method != s->ctx->method) {
579 s->method->ssl_free(s);
580 s->method = s->ctx->method;
581 if (!s->method->ssl_new(s))
584 if (!s->method->ssl_clear(s))
588 RECORD_LAYER_clear(&s->rlayer);
593 /** Used to change an SSL_CTXs default SSL method type */
594 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
596 STACK_OF(SSL_CIPHER) *sk;
600 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
601 &(ctx->cipher_list_by_id),
602 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
603 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
604 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
610 SSL *SSL_new(SSL_CTX *ctx)
615 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
618 if (ctx->method == NULL) {
619 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
623 s = OPENSSL_zalloc(sizeof(*s));
627 s->lock = CRYPTO_THREAD_lock_new();
632 * If not using the standard RAND (say for fuzzing), then don't use a
635 if (RAND_get_rand_method() == RAND_OpenSSL()) {
636 s->drbg = RAND_DRBG_new(NID_aes_128_ctr, RAND_DRBG_FLAG_CTR_USE_DF,
637 RAND_DRBG_get0_global());
639 || RAND_DRBG_instantiate(s->drbg, NULL, 0) == 0) {
640 CRYPTO_THREAD_lock_free(s->lock);
645 RECORD_LAYER_init(&s->rlayer, s);
647 s->options = ctx->options;
648 s->dane.flags = ctx->dane.flags;
649 s->min_proto_version = ctx->min_proto_version;
650 s->max_proto_version = ctx->max_proto_version;
652 s->max_cert_list = ctx->max_cert_list;
654 s->max_early_data = ctx->max_early_data;
657 * Earlier library versions used to copy the pointer to the CERT, not
658 * its contents; only when setting new parameters for the per-SSL
659 * copy, ssl_cert_new would be called (and the direct reference to
660 * the per-SSL_CTX settings would be lost, but those still were
661 * indirectly accessed for various purposes, and for that reason they
662 * used to be known as s->ctx->default_cert). Now we don't look at the
663 * SSL_CTX's CERT after having duplicated it once.
665 s->cert = ssl_cert_dup(ctx->cert);
669 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
670 s->msg_callback = ctx->msg_callback;
671 s->msg_callback_arg = ctx->msg_callback_arg;
672 s->verify_mode = ctx->verify_mode;
673 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
674 s->record_padding_cb = ctx->record_padding_cb;
675 s->record_padding_arg = ctx->record_padding_arg;
676 s->block_padding = ctx->block_padding;
677 s->sid_ctx_length = ctx->sid_ctx_length;
678 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
680 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
681 s->verify_callback = ctx->default_verify_callback;
682 s->generate_session_id = ctx->generate_session_id;
684 s->param = X509_VERIFY_PARAM_new();
685 if (s->param == NULL)
687 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
688 s->quiet_shutdown = ctx->quiet_shutdown;
689 s->max_send_fragment = ctx->max_send_fragment;
690 s->split_send_fragment = ctx->split_send_fragment;
691 s->max_pipelines = ctx->max_pipelines;
692 if (s->max_pipelines > 1)
693 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
694 if (ctx->default_read_buf_len > 0)
695 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
700 s->ext.debug_arg = NULL;
701 s->ext.ticket_expected = 0;
702 s->ext.status_type = ctx->ext.status_type;
703 s->ext.status_expected = 0;
704 s->ext.ocsp.ids = NULL;
705 s->ext.ocsp.exts = NULL;
706 s->ext.ocsp.resp = NULL;
707 s->ext.ocsp.resp_len = 0;
709 s->session_ctx = ctx;
710 #ifndef OPENSSL_NO_EC
711 if (ctx->ext.ecpointformats) {
712 s->ext.ecpointformats =
713 OPENSSL_memdup(ctx->ext.ecpointformats,
714 ctx->ext.ecpointformats_len);
715 if (!s->ext.ecpointformats)
717 s->ext.ecpointformats_len =
718 ctx->ext.ecpointformats_len;
720 if (ctx->ext.supportedgroups) {
721 s->ext.supportedgroups =
722 OPENSSL_memdup(ctx->ext.supportedgroups,
723 ctx->ext.supportedgroups_len
724 * sizeof(*ctx->ext.supportedgroups));
725 if (!s->ext.supportedgroups)
727 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
730 #ifndef OPENSSL_NO_NEXTPROTONEG
734 if (s->ctx->ext.alpn) {
735 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
736 if (s->ext.alpn == NULL)
738 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
739 s->ext.alpn_len = s->ctx->ext.alpn_len;
742 s->verified_chain = NULL;
743 s->verify_result = X509_V_OK;
745 s->default_passwd_callback = ctx->default_passwd_callback;
746 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
748 s->method = ctx->method;
750 s->key_update = SSL_KEY_UPDATE_NONE;
752 if (!s->method->ssl_new(s))
755 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
760 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
763 #ifndef OPENSSL_NO_PSK
764 s->psk_client_callback = ctx->psk_client_callback;
765 s->psk_server_callback = ctx->psk_server_callback;
767 s->psk_find_session_cb = ctx->psk_find_session_cb;
768 s->psk_use_session_cb = ctx->psk_use_session_cb;
772 #ifndef OPENSSL_NO_CT
773 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
774 ctx->ct_validation_callback_arg))
781 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
785 int SSL_is_dtls(const SSL *s)
787 return SSL_IS_DTLS(s) ? 1 : 0;
790 int SSL_up_ref(SSL *s)
794 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
797 REF_PRINT_COUNT("SSL", s);
798 REF_ASSERT_ISNT(i < 2);
799 return ((i > 1) ? 1 : 0);
802 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
803 unsigned int sid_ctx_len)
805 if (sid_ctx_len > sizeof ctx->sid_ctx) {
806 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
807 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
810 ctx->sid_ctx_length = sid_ctx_len;
811 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
816 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
817 unsigned int sid_ctx_len)
819 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
820 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
821 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
824 ssl->sid_ctx_length = sid_ctx_len;
825 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
830 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
832 CRYPTO_THREAD_write_lock(ctx->lock);
833 ctx->generate_session_id = cb;
834 CRYPTO_THREAD_unlock(ctx->lock);
838 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
840 CRYPTO_THREAD_write_lock(ssl->lock);
841 ssl->generate_session_id = cb;
842 CRYPTO_THREAD_unlock(ssl->lock);
846 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
850 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
851 * we can "construct" a session to give us the desired check - i.e. to
852 * find if there's a session in the hash table that would conflict with
853 * any new session built out of this id/id_len and the ssl_version in use
858 if (id_len > sizeof r.session_id)
861 r.ssl_version = ssl->version;
862 r.session_id_length = id_len;
863 memcpy(r.session_id, id, id_len);
865 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
866 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
867 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
871 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
873 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
876 int SSL_set_purpose(SSL *s, int purpose)
878 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
881 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
883 return X509_VERIFY_PARAM_set_trust(s->param, trust);
886 int SSL_set_trust(SSL *s, int trust)
888 return X509_VERIFY_PARAM_set_trust(s->param, trust);
891 int SSL_set1_host(SSL *s, const char *hostname)
893 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
896 int SSL_add1_host(SSL *s, const char *hostname)
898 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
901 void SSL_set_hostflags(SSL *s, unsigned int flags)
903 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
906 const char *SSL_get0_peername(SSL *s)
908 return X509_VERIFY_PARAM_get0_peername(s->param);
911 int SSL_CTX_dane_enable(SSL_CTX *ctx)
913 return dane_ctx_enable(&ctx->dane);
916 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
918 unsigned long orig = ctx->dane.flags;
920 ctx->dane.flags |= flags;
924 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
926 unsigned long orig = ctx->dane.flags;
928 ctx->dane.flags &= ~flags;
932 int SSL_dane_enable(SSL *s, const char *basedomain)
934 SSL_DANE *dane = &s->dane;
936 if (s->ctx->dane.mdmax == 0) {
937 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
940 if (dane->trecs != NULL) {
941 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
946 * Default SNI name. This rejects empty names, while set1_host below
947 * accepts them and disables host name checks. To avoid side-effects with
948 * invalid input, set the SNI name first.
950 if (s->ext.hostname == NULL) {
951 if (!SSL_set_tlsext_host_name(s, basedomain)) {
952 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
957 /* Primary RFC6125 reference identifier */
958 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
959 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
965 dane->dctx = &s->ctx->dane;
966 dane->trecs = sk_danetls_record_new_null();
968 if (dane->trecs == NULL) {
969 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
975 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
977 unsigned long orig = ssl->dane.flags;
979 ssl->dane.flags |= flags;
983 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
985 unsigned long orig = ssl->dane.flags;
987 ssl->dane.flags &= ~flags;
991 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
993 SSL_DANE *dane = &s->dane;
995 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
999 *mcert = dane->mcert;
1001 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1006 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1007 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1009 SSL_DANE *dane = &s->dane;
1011 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1015 *usage = dane->mtlsa->usage;
1017 *selector = dane->mtlsa->selector;
1019 *mtype = dane->mtlsa->mtype;
1021 *data = dane->mtlsa->data;
1023 *dlen = dane->mtlsa->dlen;
1028 SSL_DANE *SSL_get0_dane(SSL *s)
1033 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1034 uint8_t mtype, unsigned char *data, size_t dlen)
1036 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1039 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1042 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1045 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1047 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1050 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1052 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1055 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1060 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1065 void SSL_certs_clear(SSL *s)
1067 ssl_cert_clear_certs(s->cert);
1070 void SSL_free(SSL *s)
1077 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1078 REF_PRINT_COUNT("SSL", s);
1081 REF_ASSERT_ISNT(i < 0);
1083 X509_VERIFY_PARAM_free(s->param);
1084 dane_final(&s->dane);
1085 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1087 /* Ignore return value */
1088 ssl_free_wbio_buffer(s);
1090 BIO_free_all(s->wbio);
1091 BIO_free_all(s->rbio);
1093 BUF_MEM_free(s->init_buf);
1095 /* add extra stuff */
1096 sk_SSL_CIPHER_free(s->cipher_list);
1097 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1099 /* Make the next call work :-) */
1100 if (s->session != NULL) {
1101 ssl_clear_bad_session(s);
1102 SSL_SESSION_free(s->session);
1104 SSL_SESSION_free(s->psksession);
1105 OPENSSL_free(s->psksession_id);
1109 ssl_cert_free(s->cert);
1110 /* Free up if allocated */
1112 OPENSSL_free(s->ext.hostname);
1113 SSL_CTX_free(s->session_ctx);
1114 #ifndef OPENSSL_NO_EC
1115 OPENSSL_free(s->ext.ecpointformats);
1116 OPENSSL_free(s->ext.supportedgroups);
1117 #endif /* OPENSSL_NO_EC */
1118 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1119 #ifndef OPENSSL_NO_OCSP
1120 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1122 #ifndef OPENSSL_NO_CT
1123 SCT_LIST_free(s->scts);
1124 OPENSSL_free(s->ext.scts);
1126 OPENSSL_free(s->ext.ocsp.resp);
1127 OPENSSL_free(s->ext.alpn);
1128 OPENSSL_free(s->ext.tls13_cookie);
1129 OPENSSL_free(s->clienthello);
1131 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1133 sk_X509_pop_free(s->verified_chain, X509_free);
1135 if (s->method != NULL)
1136 s->method->ssl_free(s);
1138 RECORD_LAYER_release(&s->rlayer);
1140 SSL_CTX_free(s->ctx);
1142 ASYNC_WAIT_CTX_free(s->waitctx);
1144 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1145 OPENSSL_free(s->ext.npn);
1148 #ifndef OPENSSL_NO_SRTP
1149 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1152 RAND_DRBG_free(s->drbg);
1153 CRYPTO_THREAD_lock_free(s->lock);
1158 void SSL_set0_rbio(SSL *s, BIO *rbio)
1160 BIO_free_all(s->rbio);
1164 void SSL_set0_wbio(SSL *s, BIO *wbio)
1167 * If the output buffering BIO is still in place, remove it
1169 if (s->bbio != NULL)
1170 s->wbio = BIO_pop(s->wbio);
1172 BIO_free_all(s->wbio);
1175 /* Re-attach |bbio| to the new |wbio|. */
1176 if (s->bbio != NULL)
1177 s->wbio = BIO_push(s->bbio, s->wbio);
1180 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1183 * For historical reasons, this function has many different cases in
1184 * ownership handling.
1187 /* If nothing has changed, do nothing */
1188 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1192 * If the two arguments are equal then one fewer reference is granted by the
1193 * caller than we want to take
1195 if (rbio != NULL && rbio == wbio)
1199 * If only the wbio is changed only adopt one reference.
1201 if (rbio == SSL_get_rbio(s)) {
1202 SSL_set0_wbio(s, wbio);
1206 * There is an asymmetry here for historical reasons. If only the rbio is
1207 * changed AND the rbio and wbio were originally different, then we only
1208 * adopt one reference.
1210 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1211 SSL_set0_rbio(s, rbio);
1215 /* Otherwise, adopt both references. */
1216 SSL_set0_rbio(s, rbio);
1217 SSL_set0_wbio(s, wbio);
1220 BIO *SSL_get_rbio(const SSL *s)
1225 BIO *SSL_get_wbio(const SSL *s)
1227 if (s->bbio != NULL) {
1229 * If |bbio| is active, the true caller-configured BIO is its
1232 return BIO_next(s->bbio);
1237 int SSL_get_fd(const SSL *s)
1239 return SSL_get_rfd(s);
1242 int SSL_get_rfd(const SSL *s)
1247 b = SSL_get_rbio(s);
1248 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1250 BIO_get_fd(r, &ret);
1254 int SSL_get_wfd(const SSL *s)
1259 b = SSL_get_wbio(s);
1260 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1262 BIO_get_fd(r, &ret);
1266 #ifndef OPENSSL_NO_SOCK
1267 int SSL_set_fd(SSL *s, int fd)
1272 bio = BIO_new(BIO_s_socket());
1275 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1278 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1279 SSL_set_bio(s, bio, bio);
1285 int SSL_set_wfd(SSL *s, int fd)
1287 BIO *rbio = SSL_get_rbio(s);
1289 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1290 || (int)BIO_get_fd(rbio, NULL) != fd) {
1291 BIO *bio = BIO_new(BIO_s_socket());
1294 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1297 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1298 SSL_set0_wbio(s, bio);
1301 SSL_set0_wbio(s, rbio);
1306 int SSL_set_rfd(SSL *s, int fd)
1308 BIO *wbio = SSL_get_wbio(s);
1310 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1311 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1312 BIO *bio = BIO_new(BIO_s_socket());
1315 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1318 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1319 SSL_set0_rbio(s, bio);
1322 SSL_set0_rbio(s, wbio);
1329 /* return length of latest Finished message we sent, copy to 'buf' */
1330 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1334 if (s->s3 != NULL) {
1335 ret = s->s3->tmp.finish_md_len;
1338 memcpy(buf, s->s3->tmp.finish_md, count);
1343 /* return length of latest Finished message we expected, copy to 'buf' */
1344 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1348 if (s->s3 != NULL) {
1349 ret = s->s3->tmp.peer_finish_md_len;
1352 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1357 int SSL_get_verify_mode(const SSL *s)
1359 return (s->verify_mode);
1362 int SSL_get_verify_depth(const SSL *s)
1364 return X509_VERIFY_PARAM_get_depth(s->param);
1367 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1368 return (s->verify_callback);
1371 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1373 return (ctx->verify_mode);
1376 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1378 return X509_VERIFY_PARAM_get_depth(ctx->param);
1381 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1382 return (ctx->default_verify_callback);
1385 void SSL_set_verify(SSL *s, int mode,
1386 int (*callback) (int ok, X509_STORE_CTX *ctx))
1388 s->verify_mode = mode;
1389 if (callback != NULL)
1390 s->verify_callback = callback;
1393 void SSL_set_verify_depth(SSL *s, int depth)
1395 X509_VERIFY_PARAM_set_depth(s->param, depth);
1398 void SSL_set_read_ahead(SSL *s, int yes)
1400 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1403 int SSL_get_read_ahead(const SSL *s)
1405 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1408 int SSL_pending(const SSL *s)
1410 size_t pending = s->method->ssl_pending(s);
1413 * SSL_pending cannot work properly if read-ahead is enabled
1414 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1415 * impossible to fix since SSL_pending cannot report errors that may be
1416 * observed while scanning the new data. (Note that SSL_pending() is
1417 * often used as a boolean value, so we'd better not return -1.)
1419 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1420 * we just return INT_MAX.
1422 return pending < INT_MAX ? (int)pending : INT_MAX;
1425 int SSL_has_pending(const SSL *s)
1428 * Similar to SSL_pending() but returns a 1 to indicate that we have
1429 * unprocessed data available or 0 otherwise (as opposed to the number of
1430 * bytes available). Unlike SSL_pending() this will take into account
1431 * read_ahead data. A 1 return simply indicates that we have unprocessed
1432 * data. That data may not result in any application data, or we may fail
1433 * to parse the records for some reason.
1435 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1438 return RECORD_LAYER_read_pending(&s->rlayer);
1441 X509 *SSL_get_peer_certificate(const SSL *s)
1445 if ((s == NULL) || (s->session == NULL))
1448 r = s->session->peer;
1458 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1462 if ((s == NULL) || (s->session == NULL))
1465 r = s->session->peer_chain;
1468 * If we are a client, cert_chain includes the peer's own certificate; if
1469 * we are a server, it does not.
1476 * Now in theory, since the calling process own 't' it should be safe to
1477 * modify. We need to be able to read f without being hassled
1479 int SSL_copy_session_id(SSL *t, const SSL *f)
1482 /* Do we need to to SSL locking? */
1483 if (!SSL_set_session(t, SSL_get_session(f))) {
1488 * what if we are setup for one protocol version but want to talk another
1490 if (t->method != f->method) {
1491 t->method->ssl_free(t);
1492 t->method = f->method;
1493 if (t->method->ssl_new(t) == 0)
1497 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1498 ssl_cert_free(t->cert);
1500 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1507 /* Fix this so it checks all the valid key/cert options */
1508 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1510 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1511 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1514 if (ctx->cert->key->privatekey == NULL) {
1515 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1518 return (X509_check_private_key
1519 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1522 /* Fix this function so that it takes an optional type parameter */
1523 int SSL_check_private_key(const SSL *ssl)
1526 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1529 if (ssl->cert->key->x509 == NULL) {
1530 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1533 if (ssl->cert->key->privatekey == NULL) {
1534 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1537 return (X509_check_private_key(ssl->cert->key->x509,
1538 ssl->cert->key->privatekey));
1541 int SSL_waiting_for_async(SSL *s)
1549 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1551 ASYNC_WAIT_CTX *ctx = s->waitctx;
1555 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1558 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1559 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1561 ASYNC_WAIT_CTX *ctx = s->waitctx;
1565 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1569 int SSL_accept(SSL *s)
1571 if (s->handshake_func == NULL) {
1572 /* Not properly initialized yet */
1573 SSL_set_accept_state(s);
1576 return SSL_do_handshake(s);
1579 int SSL_connect(SSL *s)
1581 if (s->handshake_func == NULL) {
1582 /* Not properly initialized yet */
1583 SSL_set_connect_state(s);
1586 return SSL_do_handshake(s);
1589 long SSL_get_default_timeout(const SSL *s)
1591 return (s->method->get_timeout());
1594 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1595 int (*func) (void *))
1598 if (s->waitctx == NULL) {
1599 s->waitctx = ASYNC_WAIT_CTX_new();
1600 if (s->waitctx == NULL)
1603 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1604 sizeof(struct ssl_async_args))) {
1606 s->rwstate = SSL_NOTHING;
1607 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1610 s->rwstate = SSL_ASYNC_PAUSED;
1613 s->rwstate = SSL_ASYNC_NO_JOBS;
1619 s->rwstate = SSL_NOTHING;
1620 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1621 /* Shouldn't happen */
1626 static int ssl_io_intern(void *vargs)
1628 struct ssl_async_args *args;
1633 args = (struct ssl_async_args *)vargs;
1637 switch (args->type) {
1639 return args->f.func_read(s, buf, num, &s->asyncrw);
1641 return args->f.func_write(s, buf, num, &s->asyncrw);
1643 return args->f.func_other(s);
1648 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1650 if (s->handshake_func == NULL) {
1651 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1655 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1656 s->rwstate = SSL_NOTHING;
1660 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1661 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1662 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1666 * If we are a client and haven't received the ServerHello etc then we
1669 ossl_statem_check_finish_init(s, 0);
1671 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1672 struct ssl_async_args args;
1678 args.type = READFUNC;
1679 args.f.func_read = s->method->ssl_read;
1681 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1682 *readbytes = s->asyncrw;
1685 return s->method->ssl_read(s, buf, num, readbytes);
1689 int SSL_read(SSL *s, void *buf, int num)
1695 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1699 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1702 * The cast is safe here because ret should be <= INT_MAX because num is
1706 ret = (int)readbytes;
1711 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1713 int ret = ssl_read_internal(s, buf, num, readbytes);
1720 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1725 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1726 return SSL_READ_EARLY_DATA_ERROR;
1729 switch (s->early_data_state) {
1730 case SSL_EARLY_DATA_NONE:
1731 if (!SSL_in_before(s)) {
1732 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1733 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1734 return SSL_READ_EARLY_DATA_ERROR;
1738 case SSL_EARLY_DATA_ACCEPT_RETRY:
1739 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1740 ret = SSL_accept(s);
1743 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1744 return SSL_READ_EARLY_DATA_ERROR;
1748 case SSL_EARLY_DATA_READ_RETRY:
1749 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1750 s->early_data_state = SSL_EARLY_DATA_READING;
1751 ret = SSL_read_ex(s, buf, num, readbytes);
1753 * State machine will update early_data_state to
1754 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1757 if (ret > 0 || (ret <= 0 && s->early_data_state
1758 != SSL_EARLY_DATA_FINISHED_READING)) {
1759 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1760 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1761 : SSL_READ_EARLY_DATA_ERROR;
1764 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1767 return SSL_READ_EARLY_DATA_FINISH;
1770 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1771 return SSL_READ_EARLY_DATA_ERROR;
1775 int SSL_get_early_data_status(const SSL *s)
1777 return s->ext.early_data;
1780 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1782 if (s->handshake_func == NULL) {
1783 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1787 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1790 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1791 struct ssl_async_args args;
1797 args.type = READFUNC;
1798 args.f.func_read = s->method->ssl_peek;
1800 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1801 *readbytes = s->asyncrw;
1804 return s->method->ssl_peek(s, buf, num, readbytes);
1808 int SSL_peek(SSL *s, void *buf, int num)
1814 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1818 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1821 * The cast is safe here because ret should be <= INT_MAX because num is
1825 ret = (int)readbytes;
1831 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1833 int ret = ssl_peek_internal(s, buf, num, readbytes);
1840 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1842 if (s->handshake_func == NULL) {
1843 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1847 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1848 s->rwstate = SSL_NOTHING;
1849 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1853 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1854 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1855 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1856 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1859 /* If we are a client and haven't sent the Finished we better do that */
1860 ossl_statem_check_finish_init(s, 1);
1862 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1864 struct ssl_async_args args;
1867 args.buf = (void *)buf;
1869 args.type = WRITEFUNC;
1870 args.f.func_write = s->method->ssl_write;
1872 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1873 *written = s->asyncrw;
1876 return s->method->ssl_write(s, buf, num, written);
1880 int SSL_write(SSL *s, const void *buf, int num)
1886 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1890 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1893 * The cast is safe here because ret should be <= INT_MAX because num is
1902 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1904 int ret = ssl_write_internal(s, buf, num, written);
1911 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1913 int ret, early_data_state;
1915 switch (s->early_data_state) {
1916 case SSL_EARLY_DATA_NONE:
1918 || !SSL_in_before(s)
1919 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1920 && (s->psk_use_session_cb == NULL))) {
1921 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1922 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1927 case SSL_EARLY_DATA_CONNECT_RETRY:
1928 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1929 ret = SSL_connect(s);
1932 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1937 case SSL_EARLY_DATA_WRITE_RETRY:
1938 s->early_data_state = SSL_EARLY_DATA_WRITING;
1939 ret = SSL_write_ex(s, buf, num, written);
1940 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1943 case SSL_EARLY_DATA_FINISHED_READING:
1944 case SSL_EARLY_DATA_READ_RETRY:
1945 early_data_state = s->early_data_state;
1946 /* We are a server writing to an unauthenticated client */
1947 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1948 ret = SSL_write_ex(s, buf, num, written);
1949 s->early_data_state = early_data_state;
1953 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1958 int SSL_shutdown(SSL *s)
1961 * Note that this function behaves differently from what one might
1962 * expect. Return values are 0 for no success (yet), 1 for success; but
1963 * calling it once is usually not enough, even if blocking I/O is used
1964 * (see ssl3_shutdown).
1967 if (s->handshake_func == NULL) {
1968 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1972 if (!SSL_in_init(s)) {
1973 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1974 struct ssl_async_args args;
1977 args.type = OTHERFUNC;
1978 args.f.func_other = s->method->ssl_shutdown;
1980 return ssl_start_async_job(s, &args, ssl_io_intern);
1982 return s->method->ssl_shutdown(s);
1985 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1990 int SSL_key_update(SSL *s, int updatetype)
1993 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1994 * negotiated, and that it is appropriate to call SSL_key_update() instead
1995 * of SSL_renegotiate().
1997 if (!SSL_IS_TLS13(s)) {
1998 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2002 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2003 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2004 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2008 if (!SSL_is_init_finished(s)) {
2009 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2013 ossl_statem_set_in_init(s, 1);
2014 s->key_update = updatetype;
2018 int SSL_get_key_update_type(SSL *s)
2020 return s->key_update;
2023 int SSL_renegotiate(SSL *s)
2025 if (SSL_IS_TLS13(s)) {
2026 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2030 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2031 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2038 return (s->method->ssl_renegotiate(s));
2041 int SSL_renegotiate_abbreviated(SSL *s)
2043 if (SSL_IS_TLS13(s)) {
2044 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2048 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2049 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2056 return (s->method->ssl_renegotiate(s));
2059 int SSL_renegotiate_pending(SSL *s)
2062 * becomes true when negotiation is requested; false again once a
2063 * handshake has finished
2065 return (s->renegotiate != 0);
2068 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2073 case SSL_CTRL_GET_READ_AHEAD:
2074 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2075 case SSL_CTRL_SET_READ_AHEAD:
2076 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2077 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2080 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2081 s->msg_callback_arg = parg;
2085 return (s->mode |= larg);
2086 case SSL_CTRL_CLEAR_MODE:
2087 return (s->mode &= ~larg);
2088 case SSL_CTRL_GET_MAX_CERT_LIST:
2089 return (long)(s->max_cert_list);
2090 case SSL_CTRL_SET_MAX_CERT_LIST:
2093 l = (long)s->max_cert_list;
2094 s->max_cert_list = (size_t)larg;
2096 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2097 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2099 s->max_send_fragment = larg;
2100 if (s->max_send_fragment < s->split_send_fragment)
2101 s->split_send_fragment = s->max_send_fragment;
2103 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2104 if ((size_t)larg > s->max_send_fragment || larg == 0)
2106 s->split_send_fragment = larg;
2108 case SSL_CTRL_SET_MAX_PIPELINES:
2109 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2111 s->max_pipelines = larg;
2113 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2115 case SSL_CTRL_GET_RI_SUPPORT:
2117 return s->s3->send_connection_binding;
2120 case SSL_CTRL_CERT_FLAGS:
2121 return (s->cert->cert_flags |= larg);
2122 case SSL_CTRL_CLEAR_CERT_FLAGS:
2123 return (s->cert->cert_flags &= ~larg);
2125 case SSL_CTRL_GET_RAW_CIPHERLIST:
2127 if (s->s3->tmp.ciphers_raw == NULL)
2129 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2130 return (int)s->s3->tmp.ciphers_rawlen;
2132 return TLS_CIPHER_LEN;
2134 case SSL_CTRL_GET_EXTMS_SUPPORT:
2135 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2137 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2141 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2142 return ssl_check_allowed_versions(larg, s->max_proto_version)
2143 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2144 &s->min_proto_version);
2145 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2146 return s->min_proto_version;
2147 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2148 return ssl_check_allowed_versions(s->min_proto_version, larg)
2149 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2150 &s->max_proto_version);
2151 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2152 return s->max_proto_version;
2154 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2158 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2161 case SSL_CTRL_SET_MSG_CALLBACK:
2162 s->msg_callback = (void (*)
2163 (int write_p, int version, int content_type,
2164 const void *buf, size_t len, SSL *ssl,
2169 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2173 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2175 return ctx->sessions;
2178 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2181 /* For some cases with ctx == NULL perform syntax checks */
2184 #ifndef OPENSSL_NO_EC
2185 case SSL_CTRL_SET_GROUPS_LIST:
2186 return tls1_set_groups_list(NULL, NULL, parg);
2188 case SSL_CTRL_SET_SIGALGS_LIST:
2189 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2190 return tls1_set_sigalgs_list(NULL, parg, 0);
2197 case SSL_CTRL_GET_READ_AHEAD:
2198 return (ctx->read_ahead);
2199 case SSL_CTRL_SET_READ_AHEAD:
2200 l = ctx->read_ahead;
2201 ctx->read_ahead = larg;
2204 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2205 ctx->msg_callback_arg = parg;
2208 case SSL_CTRL_GET_MAX_CERT_LIST:
2209 return (long)(ctx->max_cert_list);
2210 case SSL_CTRL_SET_MAX_CERT_LIST:
2213 l = (long)ctx->max_cert_list;
2214 ctx->max_cert_list = (size_t)larg;
2217 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2220 l = (long)ctx->session_cache_size;
2221 ctx->session_cache_size = (size_t)larg;
2223 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2224 return (long)(ctx->session_cache_size);
2225 case SSL_CTRL_SET_SESS_CACHE_MODE:
2226 l = ctx->session_cache_mode;
2227 ctx->session_cache_mode = larg;
2229 case SSL_CTRL_GET_SESS_CACHE_MODE:
2230 return (ctx->session_cache_mode);
2232 case SSL_CTRL_SESS_NUMBER:
2233 return (lh_SSL_SESSION_num_items(ctx->sessions));
2234 case SSL_CTRL_SESS_CONNECT:
2235 return (ctx->stats.sess_connect);
2236 case SSL_CTRL_SESS_CONNECT_GOOD:
2237 return (ctx->stats.sess_connect_good);
2238 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2239 return (ctx->stats.sess_connect_renegotiate);
2240 case SSL_CTRL_SESS_ACCEPT:
2241 return (ctx->stats.sess_accept);
2242 case SSL_CTRL_SESS_ACCEPT_GOOD:
2243 return (ctx->stats.sess_accept_good);
2244 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2245 return (ctx->stats.sess_accept_renegotiate);
2246 case SSL_CTRL_SESS_HIT:
2247 return (ctx->stats.sess_hit);
2248 case SSL_CTRL_SESS_CB_HIT:
2249 return (ctx->stats.sess_cb_hit);
2250 case SSL_CTRL_SESS_MISSES:
2251 return (ctx->stats.sess_miss);
2252 case SSL_CTRL_SESS_TIMEOUTS:
2253 return (ctx->stats.sess_timeout);
2254 case SSL_CTRL_SESS_CACHE_FULL:
2255 return (ctx->stats.sess_cache_full);
2257 return (ctx->mode |= larg);
2258 case SSL_CTRL_CLEAR_MODE:
2259 return (ctx->mode &= ~larg);
2260 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2261 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2263 ctx->max_send_fragment = larg;
2264 if (ctx->max_send_fragment < ctx->split_send_fragment)
2265 ctx->split_send_fragment = ctx->max_send_fragment;
2267 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2268 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2270 ctx->split_send_fragment = larg;
2272 case SSL_CTRL_SET_MAX_PIPELINES:
2273 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2275 ctx->max_pipelines = larg;
2277 case SSL_CTRL_CERT_FLAGS:
2278 return (ctx->cert->cert_flags |= larg);
2279 case SSL_CTRL_CLEAR_CERT_FLAGS:
2280 return (ctx->cert->cert_flags &= ~larg);
2281 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2282 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2283 && ssl_set_version_bound(ctx->method->version, (int)larg,
2284 &ctx->min_proto_version);
2285 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2286 return ctx->min_proto_version;
2287 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2288 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2289 && ssl_set_version_bound(ctx->method->version, (int)larg,
2290 &ctx->max_proto_version);
2291 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2292 return ctx->max_proto_version;
2294 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2298 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2301 case SSL_CTRL_SET_MSG_CALLBACK:
2302 ctx->msg_callback = (void (*)
2303 (int write_p, int version, int content_type,
2304 const void *buf, size_t len, SSL *ssl,
2309 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2313 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2322 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2323 const SSL_CIPHER *const *bp)
2325 if ((*ap)->id > (*bp)->id)
2327 if ((*ap)->id < (*bp)->id)
2332 /** return a STACK of the ciphers available for the SSL and in order of
2334 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2337 if (s->cipher_list != NULL) {
2338 return (s->cipher_list);
2339 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2340 return (s->ctx->cipher_list);
2346 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2348 if ((s == NULL) || (s->session == NULL) || !s->server)
2350 return s->session->ciphers;
2353 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2355 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2357 ciphers = SSL_get_ciphers(s);
2360 ssl_set_client_disabled(s);
2361 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2362 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2363 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2365 sk = sk_SSL_CIPHER_new_null();
2368 if (!sk_SSL_CIPHER_push(sk, c)) {
2369 sk_SSL_CIPHER_free(sk);
2377 /** return a STACK of the ciphers available for the SSL and in order of
2379 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2382 if (s->cipher_list_by_id != NULL) {
2383 return (s->cipher_list_by_id);
2384 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2385 return (s->ctx->cipher_list_by_id);
2391 /** The old interface to get the same thing as SSL_get_ciphers() */
2392 const char *SSL_get_cipher_list(const SSL *s, int n)
2394 const SSL_CIPHER *c;
2395 STACK_OF(SSL_CIPHER) *sk;
2399 sk = SSL_get_ciphers(s);
2400 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2402 c = sk_SSL_CIPHER_value(sk, n);
2408 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2410 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2413 return ctx->cipher_list;
2417 /** specify the ciphers to be used by default by the SSL_CTX */
2418 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2420 STACK_OF(SSL_CIPHER) *sk;
2422 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2423 &ctx->cipher_list_by_id, str, ctx->cert);
2425 * ssl_create_cipher_list may return an empty stack if it was unable to
2426 * find a cipher matching the given rule string (for example if the rule
2427 * string specifies a cipher which has been disabled). This is not an
2428 * error as far as ssl_create_cipher_list is concerned, and hence
2429 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2433 else if (sk_SSL_CIPHER_num(sk) == 0) {
2434 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2440 /** specify the ciphers to be used by the SSL */
2441 int SSL_set_cipher_list(SSL *s, const char *str)
2443 STACK_OF(SSL_CIPHER) *sk;
2445 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2446 &s->cipher_list_by_id, str, s->cert);
2447 /* see comment in SSL_CTX_set_cipher_list */
2450 else if (sk_SSL_CIPHER_num(sk) == 0) {
2451 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2457 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2460 STACK_OF(SSL_CIPHER) *sk;
2461 const SSL_CIPHER *c;
2464 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2468 sk = s->session->ciphers;
2470 if (sk_SSL_CIPHER_num(sk) == 0)
2473 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2476 c = sk_SSL_CIPHER_value(sk, i);
2477 n = strlen(c->name);
2493 /** return a servername extension value if provided in Client Hello, or NULL.
2494 * So far, only host_name types are defined (RFC 3546).
2497 const char *SSL_get_servername(const SSL *s, const int type)
2499 if (type != TLSEXT_NAMETYPE_host_name)
2502 return s->session && !s->ext.hostname ?
2503 s->session->ext.hostname : s->ext.hostname;
2506 int SSL_get_servername_type(const SSL *s)
2509 && (!s->ext.hostname ? s->session->
2510 ext.hostname : s->ext.hostname))
2511 return TLSEXT_NAMETYPE_host_name;
2516 * SSL_select_next_proto implements the standard protocol selection. It is
2517 * expected that this function is called from the callback set by
2518 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2519 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2520 * not included in the length. A byte string of length 0 is invalid. No byte
2521 * string may be truncated. The current, but experimental algorithm for
2522 * selecting the protocol is: 1) If the server doesn't support NPN then this
2523 * is indicated to the callback. In this case, the client application has to
2524 * abort the connection or have a default application level protocol. 2) If
2525 * the server supports NPN, but advertises an empty list then the client
2526 * selects the first protocol in its list, but indicates via the API that this
2527 * fallback case was enacted. 3) Otherwise, the client finds the first
2528 * protocol in the server's list that it supports and selects this protocol.
2529 * This is because it's assumed that the server has better information about
2530 * which protocol a client should use. 4) If the client doesn't support any
2531 * of the server's advertised protocols, then this is treated the same as
2532 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2533 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2535 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2536 const unsigned char *server,
2537 unsigned int server_len,
2538 const unsigned char *client, unsigned int client_len)
2541 const unsigned char *result;
2542 int status = OPENSSL_NPN_UNSUPPORTED;
2545 * For each protocol in server preference order, see if we support it.
2547 for (i = 0; i < server_len;) {
2548 for (j = 0; j < client_len;) {
2549 if (server[i] == client[j] &&
2550 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2551 /* We found a match */
2552 result = &server[i];
2553 status = OPENSSL_NPN_NEGOTIATED;
2563 /* There's no overlap between our protocols and the server's list. */
2565 status = OPENSSL_NPN_NO_OVERLAP;
2568 *out = (unsigned char *)result + 1;
2569 *outlen = result[0];
2573 #ifndef OPENSSL_NO_NEXTPROTONEG
2575 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2576 * client's requested protocol for this connection and returns 0. If the
2577 * client didn't request any protocol, then *data is set to NULL. Note that
2578 * the client can request any protocol it chooses. The value returned from
2579 * this function need not be a member of the list of supported protocols
2580 * provided by the callback.
2582 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2589 *len = (unsigned int)s->ext.npn_len;
2594 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2595 * a TLS server needs a list of supported protocols for Next Protocol
2596 * Negotiation. The returned list must be in wire format. The list is
2597 * returned by setting |out| to point to it and |outlen| to its length. This
2598 * memory will not be modified, but one should assume that the SSL* keeps a
2599 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2600 * wishes to advertise. Otherwise, no such extension will be included in the
2603 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2604 SSL_CTX_npn_advertised_cb_func cb,
2607 ctx->ext.npn_advertised_cb = cb;
2608 ctx->ext.npn_advertised_cb_arg = arg;
2612 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2613 * client needs to select a protocol from the server's provided list. |out|
2614 * must be set to point to the selected protocol (which may be within |in|).
2615 * The length of the protocol name must be written into |outlen|. The
2616 * server's advertised protocols are provided in |in| and |inlen|. The
2617 * callback can assume that |in| is syntactically valid. The client must
2618 * select a protocol. It is fatal to the connection if this callback returns
2619 * a value other than SSL_TLSEXT_ERR_OK.
2621 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2622 SSL_CTX_npn_select_cb_func cb,
2625 ctx->ext.npn_select_cb = cb;
2626 ctx->ext.npn_select_cb_arg = arg;
2631 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2632 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2633 * length-prefixed strings). Returns 0 on success.
2635 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2636 unsigned int protos_len)
2638 OPENSSL_free(ctx->ext.alpn);
2639 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2640 if (ctx->ext.alpn == NULL) {
2641 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2644 ctx->ext.alpn_len = protos_len;
2650 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2651 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2652 * length-prefixed strings). Returns 0 on success.
2654 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2655 unsigned int protos_len)
2657 OPENSSL_free(ssl->ext.alpn);
2658 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2659 if (ssl->ext.alpn == NULL) {
2660 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2663 ssl->ext.alpn_len = protos_len;
2669 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2670 * called during ClientHello processing in order to select an ALPN protocol
2671 * from the client's list of offered protocols.
2673 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2674 SSL_CTX_alpn_select_cb_func cb,
2677 ctx->ext.alpn_select_cb = cb;
2678 ctx->ext.alpn_select_cb_arg = arg;
2682 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2683 * On return it sets |*data| to point to |*len| bytes of protocol name
2684 * (not including the leading length-prefix byte). If the server didn't
2685 * respond with a negotiated protocol then |*len| will be zero.
2687 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2692 *data = ssl->s3->alpn_selected;
2696 *len = (unsigned int)ssl->s3->alpn_selected_len;
2699 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2700 const char *label, size_t llen,
2701 const unsigned char *context, size_t contextlen,
2704 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2707 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2709 contextlen, use_context);
2712 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2714 const unsigned char *session_id = a->session_id;
2716 unsigned char tmp_storage[4];
2718 if (a->session_id_length < sizeof(tmp_storage)) {
2719 memset(tmp_storage, 0, sizeof(tmp_storage));
2720 memcpy(tmp_storage, a->session_id, a->session_id_length);
2721 session_id = tmp_storage;
2725 ((unsigned long)session_id[0]) |
2726 ((unsigned long)session_id[1] << 8L) |
2727 ((unsigned long)session_id[2] << 16L) |
2728 ((unsigned long)session_id[3] << 24L);
2733 * NB: If this function (or indeed the hash function which uses a sort of
2734 * coarser function than this one) is changed, ensure
2735 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2736 * being able to construct an SSL_SESSION that will collide with any existing
2737 * session with a matching session ID.
2739 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2741 if (a->ssl_version != b->ssl_version)
2743 if (a->session_id_length != b->session_id_length)
2745 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2749 * These wrapper functions should remain rather than redeclaring
2750 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2751 * variable. The reason is that the functions aren't static, they're exposed
2755 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2757 SSL_CTX *ret = NULL;
2760 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2764 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2767 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2768 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2771 ret = OPENSSL_zalloc(sizeof(*ret));
2776 ret->min_proto_version = 0;
2777 ret->max_proto_version = 0;
2778 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2779 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2780 /* We take the system default. */
2781 ret->session_timeout = meth->get_timeout();
2782 ret->references = 1;
2783 ret->lock = CRYPTO_THREAD_lock_new();
2784 if (ret->lock == NULL) {
2785 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2789 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2790 ret->verify_mode = SSL_VERIFY_NONE;
2791 if ((ret->cert = ssl_cert_new()) == NULL)
2794 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2795 if (ret->sessions == NULL)
2797 ret->cert_store = X509_STORE_new();
2798 if (ret->cert_store == NULL)
2800 #ifndef OPENSSL_NO_CT
2801 ret->ctlog_store = CTLOG_STORE_new();
2802 if (ret->ctlog_store == NULL)
2805 if (!ssl_create_cipher_list(ret->method,
2806 &ret->cipher_list, &ret->cipher_list_by_id,
2807 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2808 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2809 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2813 ret->param = X509_VERIFY_PARAM_new();
2814 if (ret->param == NULL)
2817 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2818 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2821 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2822 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2826 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2829 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2832 /* No compression for DTLS */
2833 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2834 ret->comp_methods = SSL_COMP_get_compression_methods();
2836 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2837 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2839 /* Setup RFC5077 ticket keys */
2840 if ((RAND_bytes(ret->ext.tick_key_name,
2841 sizeof(ret->ext.tick_key_name)) <= 0)
2842 || (RAND_bytes(ret->ext.tick_hmac_key,
2843 sizeof(ret->ext.tick_hmac_key)) <= 0)
2844 || (RAND_bytes(ret->ext.tick_aes_key,
2845 sizeof(ret->ext.tick_aes_key)) <= 0))
2846 ret->options |= SSL_OP_NO_TICKET;
2848 #ifndef OPENSSL_NO_SRP
2849 if (!SSL_CTX_SRP_CTX_init(ret))
2852 #ifndef OPENSSL_NO_ENGINE
2853 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2854 # define eng_strx(x) #x
2855 # define eng_str(x) eng_strx(x)
2856 /* Use specific client engine automatically... ignore errors */
2859 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2862 ENGINE_load_builtin_engines();
2863 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2865 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2871 * Default is to connect to non-RI servers. When RI is more widely
2872 * deployed might change this.
2874 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2876 * Disable compression by default to prevent CRIME. Applications can
2877 * re-enable compression by configuring
2878 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2879 * or by using the SSL_CONF library.
2881 ret->options |= SSL_OP_NO_COMPRESSION;
2883 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2886 * Default max early data is a fully loaded single record. Could be split
2887 * across multiple records in practice
2889 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2893 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2899 int SSL_CTX_up_ref(SSL_CTX *ctx)
2903 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2906 REF_PRINT_COUNT("SSL_CTX", ctx);
2907 REF_ASSERT_ISNT(i < 2);
2908 return ((i > 1) ? 1 : 0);
2911 void SSL_CTX_free(SSL_CTX *a)
2918 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2919 REF_PRINT_COUNT("SSL_CTX", a);
2922 REF_ASSERT_ISNT(i < 0);
2924 X509_VERIFY_PARAM_free(a->param);
2925 dane_ctx_final(&a->dane);
2928 * Free internal session cache. However: the remove_cb() may reference
2929 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2930 * after the sessions were flushed.
2931 * As the ex_data handling routines might also touch the session cache,
2932 * the most secure solution seems to be: empty (flush) the cache, then
2933 * free ex_data, then finally free the cache.
2934 * (See ticket [openssl.org #212].)
2936 if (a->sessions != NULL)
2937 SSL_CTX_flush_sessions(a, 0);
2939 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2940 lh_SSL_SESSION_free(a->sessions);
2941 X509_STORE_free(a->cert_store);
2942 #ifndef OPENSSL_NO_CT
2943 CTLOG_STORE_free(a->ctlog_store);
2945 sk_SSL_CIPHER_free(a->cipher_list);
2946 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2947 ssl_cert_free(a->cert);
2948 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2949 sk_X509_pop_free(a->extra_certs, X509_free);
2950 a->comp_methods = NULL;
2951 #ifndef OPENSSL_NO_SRTP
2952 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2954 #ifndef OPENSSL_NO_SRP
2955 SSL_CTX_SRP_CTX_free(a);
2957 #ifndef OPENSSL_NO_ENGINE
2958 ENGINE_finish(a->client_cert_engine);
2961 #ifndef OPENSSL_NO_EC
2962 OPENSSL_free(a->ext.ecpointformats);
2963 OPENSSL_free(a->ext.supportedgroups);
2965 OPENSSL_free(a->ext.alpn);
2967 CRYPTO_THREAD_lock_free(a->lock);
2972 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2974 ctx->default_passwd_callback = cb;
2977 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2979 ctx->default_passwd_callback_userdata = u;
2982 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2984 return ctx->default_passwd_callback;
2987 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2989 return ctx->default_passwd_callback_userdata;
2992 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2994 s->default_passwd_callback = cb;
2997 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2999 s->default_passwd_callback_userdata = u;
3002 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3004 return s->default_passwd_callback;
3007 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3009 return s->default_passwd_callback_userdata;
3012 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3013 int (*cb) (X509_STORE_CTX *, void *),
3016 ctx->app_verify_callback = cb;
3017 ctx->app_verify_arg = arg;
3020 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3021 int (*cb) (int, X509_STORE_CTX *))
3023 ctx->verify_mode = mode;
3024 ctx->default_verify_callback = cb;
3027 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3029 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3032 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3034 ssl_cert_set_cert_cb(c->cert, cb, arg);
3037 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3039 ssl_cert_set_cert_cb(s->cert, cb, arg);
3042 void ssl_set_masks(SSL *s)
3045 uint32_t *pvalid = s->s3->tmp.valid_flags;
3046 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3047 unsigned long mask_k, mask_a;
3048 #ifndef OPENSSL_NO_EC
3049 int have_ecc_cert, ecdsa_ok;
3054 #ifndef OPENSSL_NO_DH
3055 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3060 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3061 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3062 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3063 #ifndef OPENSSL_NO_EC
3064 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3070 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3071 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3074 #ifndef OPENSSL_NO_GOST
3075 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3076 mask_k |= SSL_kGOST;
3077 mask_a |= SSL_aGOST12;
3079 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3080 mask_k |= SSL_kGOST;
3081 mask_a |= SSL_aGOST12;
3083 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3084 mask_k |= SSL_kGOST;
3085 mask_a |= SSL_aGOST01;
3096 * If we only have an RSA-PSS certificate allow RSA authentication
3097 * if TLS 1.2 and peer supports it.
3100 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3101 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3102 && TLS1_get_version(s) == TLS1_2_VERSION))
3109 mask_a |= SSL_aNULL;
3112 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3113 * depending on the key usage extension.
3115 #ifndef OPENSSL_NO_EC
3116 if (have_ecc_cert) {
3118 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3119 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3120 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3123 mask_a |= SSL_aECDSA;
3125 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3126 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3127 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3128 && TLS1_get_version(s) == TLS1_2_VERSION)
3129 mask_a |= SSL_aECDSA;
3132 #ifndef OPENSSL_NO_EC
3133 mask_k |= SSL_kECDHE;
3136 #ifndef OPENSSL_NO_PSK
3139 if (mask_k & SSL_kRSA)
3140 mask_k |= SSL_kRSAPSK;
3141 if (mask_k & SSL_kDHE)
3142 mask_k |= SSL_kDHEPSK;
3143 if (mask_k & SSL_kECDHE)
3144 mask_k |= SSL_kECDHEPSK;
3147 s->s3->tmp.mask_k = mask_k;
3148 s->s3->tmp.mask_a = mask_a;
3151 #ifndef OPENSSL_NO_EC
3153 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3155 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3156 /* key usage, if present, must allow signing */
3157 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3158 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3159 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3163 return 1; /* all checks are ok */
3168 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3169 size_t *serverinfo_length)
3171 CERT_PKEY *cpk = s->s3->tmp.cert;
3172 *serverinfo_length = 0;
3174 if (cpk == NULL || cpk->serverinfo == NULL)
3177 *serverinfo = cpk->serverinfo;
3178 *serverinfo_length = cpk->serverinfo_length;
3182 void ssl_update_cache(SSL *s, int mode)
3187 * If the session_id_length is 0, we are not supposed to cache it, and it
3188 * would be rather hard to do anyway :-)
3190 if (s->session->session_id_length == 0)
3193 i = s->session_ctx->session_cache_mode;
3195 && (!s->hit || SSL_IS_TLS13(s))
3196 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
3197 || SSL_CTX_add_session(s->session_ctx, s->session))
3198 && s->session_ctx->new_session_cb != NULL) {
3199 SSL_SESSION_up_ref(s->session);
3200 if (!s->session_ctx->new_session_cb(s, s->session))
3201 SSL_SESSION_free(s->session);
3204 /* auto flush every 255 connections */
3205 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3206 if ((((mode & SSL_SESS_CACHE_CLIENT)
3207 ? s->session_ctx->stats.sess_connect_good
3208 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3209 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3214 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3219 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3224 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3228 if (s->method != meth) {
3229 const SSL_METHOD *sm = s->method;
3230 int (*hf) (SSL *) = s->handshake_func;
3232 if (sm->version == meth->version)
3237 ret = s->method->ssl_new(s);
3240 if (hf == sm->ssl_connect)
3241 s->handshake_func = meth->ssl_connect;
3242 else if (hf == sm->ssl_accept)
3243 s->handshake_func = meth->ssl_accept;
3248 int SSL_get_error(const SSL *s, int i)
3255 return (SSL_ERROR_NONE);
3258 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3259 * where we do encode the error
3261 if ((l = ERR_peek_error()) != 0) {
3262 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3263 return (SSL_ERROR_SYSCALL);
3265 return (SSL_ERROR_SSL);
3268 if (SSL_want_read(s)) {
3269 bio = SSL_get_rbio(s);
3270 if (BIO_should_read(bio))
3271 return (SSL_ERROR_WANT_READ);
3272 else if (BIO_should_write(bio))
3274 * This one doesn't make too much sense ... We never try to write
3275 * to the rbio, and an application program where rbio and wbio
3276 * are separate couldn't even know what it should wait for.
3277 * However if we ever set s->rwstate incorrectly (so that we have
3278 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3279 * wbio *are* the same, this test works around that bug; so it
3280 * might be safer to keep it.
3282 return (SSL_ERROR_WANT_WRITE);
3283 else if (BIO_should_io_special(bio)) {
3284 reason = BIO_get_retry_reason(bio);
3285 if (reason == BIO_RR_CONNECT)
3286 return (SSL_ERROR_WANT_CONNECT);
3287 else if (reason == BIO_RR_ACCEPT)
3288 return (SSL_ERROR_WANT_ACCEPT);
3290 return (SSL_ERROR_SYSCALL); /* unknown */
3294 if (SSL_want_write(s)) {
3295 /* Access wbio directly - in order to use the buffered bio if present */
3297 if (BIO_should_write(bio))
3298 return (SSL_ERROR_WANT_WRITE);
3299 else if (BIO_should_read(bio))
3301 * See above (SSL_want_read(s) with BIO_should_write(bio))
3303 return (SSL_ERROR_WANT_READ);
3304 else if (BIO_should_io_special(bio)) {
3305 reason = BIO_get_retry_reason(bio);
3306 if (reason == BIO_RR_CONNECT)
3307 return (SSL_ERROR_WANT_CONNECT);
3308 else if (reason == BIO_RR_ACCEPT)
3309 return (SSL_ERROR_WANT_ACCEPT);
3311 return (SSL_ERROR_SYSCALL);
3314 if (SSL_want_x509_lookup(s))
3315 return (SSL_ERROR_WANT_X509_LOOKUP);
3316 if (SSL_want_async(s))
3317 return SSL_ERROR_WANT_ASYNC;
3318 if (SSL_want_async_job(s))
3319 return SSL_ERROR_WANT_ASYNC_JOB;
3320 if (SSL_want_client_hello_cb(s))
3321 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3323 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3324 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3325 return (SSL_ERROR_ZERO_RETURN);
3327 return (SSL_ERROR_SYSCALL);
3330 static int ssl_do_handshake_intern(void *vargs)
3332 struct ssl_async_args *args;
3335 args = (struct ssl_async_args *)vargs;
3338 return s->handshake_func(s);
3341 int SSL_do_handshake(SSL *s)
3345 if (s->handshake_func == NULL) {
3346 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3350 ossl_statem_check_finish_init(s, -1);
3352 s->method->ssl_renegotiate_check(s, 0);
3354 if (SSL_is_server(s)) {
3355 /* clear SNI settings at server-side */
3356 OPENSSL_free(s->ext.hostname);
3357 s->ext.hostname = NULL;
3360 if (SSL_in_init(s) || SSL_in_before(s)) {
3361 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3362 struct ssl_async_args args;
3366 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3368 ret = s->handshake_func(s);
3374 void SSL_set_accept_state(SSL *s)
3378 ossl_statem_clear(s);
3379 s->handshake_func = s->method->ssl_accept;
3383 void SSL_set_connect_state(SSL *s)
3387 ossl_statem_clear(s);
3388 s->handshake_func = s->method->ssl_connect;
3392 int ssl_undefined_function(SSL *s)
3394 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3398 int ssl_undefined_void_function(void)
3400 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3401 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3405 int ssl_undefined_const_function(const SSL *s)
3410 const SSL_METHOD *ssl_bad_method(int ver)
3412 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3416 const char *ssl_protocol_to_string(int version)
3420 case TLS1_3_VERSION:
3423 case TLS1_2_VERSION:
3426 case TLS1_1_VERSION:
3441 case DTLS1_2_VERSION:
3449 const char *SSL_get_version(const SSL *s)
3451 return ssl_protocol_to_string(s->version);
3454 SSL *SSL_dup(SSL *s)
3456 STACK_OF(X509_NAME) *sk;
3461 /* If we're not quiescent, just up_ref! */
3462 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3463 CRYPTO_UP_REF(&s->references, &i, s->lock);
3468 * Otherwise, copy configuration state, and session if set.
3470 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3473 if (s->session != NULL) {
3475 * Arranges to share the same session via up_ref. This "copies"
3476 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3478 if (!SSL_copy_session_id(ret, s))
3482 * No session has been established yet, so we have to expect that
3483 * s->cert or ret->cert will be changed later -- they should not both
3484 * point to the same object, and thus we can't use
3485 * SSL_copy_session_id.
3487 if (!SSL_set_ssl_method(ret, s->method))
3490 if (s->cert != NULL) {
3491 ssl_cert_free(ret->cert);
3492 ret->cert = ssl_cert_dup(s->cert);
3493 if (ret->cert == NULL)
3497 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3498 (int)s->sid_ctx_length))
3502 if (!ssl_dane_dup(ret, s))
3504 ret->version = s->version;
3505 ret->options = s->options;
3506 ret->mode = s->mode;
3507 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3508 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3509 ret->msg_callback = s->msg_callback;
3510 ret->msg_callback_arg = s->msg_callback_arg;
3511 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3512 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3513 ret->generate_session_id = s->generate_session_id;
3515 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3517 /* copy app data, a little dangerous perhaps */
3518 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3521 /* setup rbio, and wbio */
3522 if (s->rbio != NULL) {
3523 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3526 if (s->wbio != NULL) {
3527 if (s->wbio != s->rbio) {
3528 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3531 BIO_up_ref(ret->rbio);
3532 ret->wbio = ret->rbio;
3536 ret->server = s->server;
3537 if (s->handshake_func) {
3539 SSL_set_accept_state(ret);
3541 SSL_set_connect_state(ret);
3543 ret->shutdown = s->shutdown;
3546 ret->default_passwd_callback = s->default_passwd_callback;
3547 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3549 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3551 /* dup the cipher_list and cipher_list_by_id stacks */
3552 if (s->cipher_list != NULL) {
3553 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3556 if (s->cipher_list_by_id != NULL)
3557 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3561 /* Dup the client_CA list */
3562 if (s->ca_names != NULL) {
3563 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3566 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3567 xn = sk_X509_NAME_value(sk, i);
3568 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3581 void ssl_clear_cipher_ctx(SSL *s)
3583 if (s->enc_read_ctx != NULL) {
3584 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3585 s->enc_read_ctx = NULL;
3587 if (s->enc_write_ctx != NULL) {
3588 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3589 s->enc_write_ctx = NULL;
3591 #ifndef OPENSSL_NO_COMP
3592 COMP_CTX_free(s->expand);
3594 COMP_CTX_free(s->compress);
3599 X509 *SSL_get_certificate(const SSL *s)
3601 if (s->cert != NULL)
3602 return (s->cert->key->x509);
3607 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3609 if (s->cert != NULL)
3610 return (s->cert->key->privatekey);
3615 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3617 if (ctx->cert != NULL)
3618 return ctx->cert->key->x509;
3623 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3625 if (ctx->cert != NULL)
3626 return ctx->cert->key->privatekey;
3631 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3633 if ((s->session != NULL) && (s->session->cipher != NULL))
3634 return (s->session->cipher);
3638 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3640 return s->s3->tmp.new_cipher;
3643 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3645 #ifndef OPENSSL_NO_COMP
3646 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3652 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3654 #ifndef OPENSSL_NO_COMP
3655 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3661 int ssl_init_wbio_buffer(SSL *s)
3665 if (s->bbio != NULL) {
3666 /* Already buffered. */
3670 bbio = BIO_new(BIO_f_buffer());
3671 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3673 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3677 s->wbio = BIO_push(bbio, s->wbio);
3682 int ssl_free_wbio_buffer(SSL *s)
3684 /* callers ensure s is never null */
3685 if (s->bbio == NULL)
3688 s->wbio = BIO_pop(s->wbio);
3689 if (!ossl_assert(s->wbio != NULL))
3697 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3699 ctx->quiet_shutdown = mode;
3702 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3704 return (ctx->quiet_shutdown);
3707 void SSL_set_quiet_shutdown(SSL *s, int mode)
3709 s->quiet_shutdown = mode;
3712 int SSL_get_quiet_shutdown(const SSL *s)
3714 return (s->quiet_shutdown);
3717 void SSL_set_shutdown(SSL *s, int mode)
3722 int SSL_get_shutdown(const SSL *s)
3727 int SSL_version(const SSL *s)
3732 int SSL_client_version(const SSL *s)
3734 return s->client_version;
3737 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3742 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3745 if (ssl->ctx == ctx)
3748 ctx = ssl->session_ctx;
3749 new_cert = ssl_cert_dup(ctx->cert);
3750 if (new_cert == NULL) {
3754 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3755 ssl_cert_free(new_cert);
3759 ssl_cert_free(ssl->cert);
3760 ssl->cert = new_cert;
3763 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3764 * so setter APIs must prevent invalid lengths from entering the system.
3766 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3770 * If the session ID context matches that of the parent SSL_CTX,
3771 * inherit it from the new SSL_CTX as well. If however the context does
3772 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3773 * leave it unchanged.
3775 if ((ssl->ctx != NULL) &&
3776 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3777 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3778 ssl->sid_ctx_length = ctx->sid_ctx_length;
3779 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3782 SSL_CTX_up_ref(ctx);
3783 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3789 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3791 return (X509_STORE_set_default_paths(ctx->cert_store));
3794 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3796 X509_LOOKUP *lookup;
3798 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3801 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3803 /* Clear any errors if the default directory does not exist */
3809 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3811 X509_LOOKUP *lookup;
3813 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3817 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3819 /* Clear any errors if the default file does not exist */
3825 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3828 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3831 void SSL_set_info_callback(SSL *ssl,
3832 void (*cb) (const SSL *ssl, int type, int val))
3834 ssl->info_callback = cb;
3838 * One compiler (Diab DCC) doesn't like argument names in returned function
3841 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3844 return ssl->info_callback;
3847 void SSL_set_verify_result(SSL *ssl, long arg)
3849 ssl->verify_result = arg;
3852 long SSL_get_verify_result(const SSL *ssl)
3854 return (ssl->verify_result);
3857 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3860 return sizeof(ssl->s3->client_random);
3861 if (outlen > sizeof(ssl->s3->client_random))
3862 outlen = sizeof(ssl->s3->client_random);
3863 memcpy(out, ssl->s3->client_random, outlen);
3867 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3870 return sizeof(ssl->s3->server_random);
3871 if (outlen > sizeof(ssl->s3->server_random))
3872 outlen = sizeof(ssl->s3->server_random);
3873 memcpy(out, ssl->s3->server_random, outlen);
3877 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3878 unsigned char *out, size_t outlen)
3881 return session->master_key_length;
3882 if (outlen > session->master_key_length)
3883 outlen = session->master_key_length;
3884 memcpy(out, session->master_key, outlen);
3888 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3891 if (len > sizeof(sess->master_key))
3894 memcpy(sess->master_key, in, len);
3895 sess->master_key_length = len;
3900 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3902 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3905 void *SSL_get_ex_data(const SSL *s, int idx)
3907 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3910 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3912 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3915 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3917 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3920 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3922 return (ctx->cert_store);
3925 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3927 X509_STORE_free(ctx->cert_store);
3928 ctx->cert_store = store;
3931 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3934 X509_STORE_up_ref(store);
3935 SSL_CTX_set_cert_store(ctx, store);
3938 int SSL_want(const SSL *s)
3940 return (s->rwstate);
3944 * \brief Set the callback for generating temporary DH keys.
3945 * \param ctx the SSL context.
3946 * \param dh the callback
3949 #ifndef OPENSSL_NO_DH
3950 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3951 DH *(*dh) (SSL *ssl, int is_export,
3954 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3957 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3960 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3964 #ifndef OPENSSL_NO_PSK
3965 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3967 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3968 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3971 OPENSSL_free(ctx->cert->psk_identity_hint);
3972 if (identity_hint != NULL) {
3973 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3974 if (ctx->cert->psk_identity_hint == NULL)
3977 ctx->cert->psk_identity_hint = NULL;
3981 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3986 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3987 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3990 OPENSSL_free(s->cert->psk_identity_hint);
3991 if (identity_hint != NULL) {
3992 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3993 if (s->cert->psk_identity_hint == NULL)
3996 s->cert->psk_identity_hint = NULL;
4000 const char *SSL_get_psk_identity_hint(const SSL *s)
4002 if (s == NULL || s->session == NULL)
4004 return (s->session->psk_identity_hint);
4007 const char *SSL_get_psk_identity(const SSL *s)
4009 if (s == NULL || s->session == NULL)
4011 return (s->session->psk_identity);
4014 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4016 s->psk_client_callback = cb;
4019 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4021 ctx->psk_client_callback = cb;
4024 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4026 s->psk_server_callback = cb;
4029 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4031 ctx->psk_server_callback = cb;
4035 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4037 s->psk_find_session_cb = cb;
4040 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4041 SSL_psk_find_session_cb_func cb)
4043 ctx->psk_find_session_cb = cb;
4046 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4048 s->psk_use_session_cb = cb;
4051 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4052 SSL_psk_use_session_cb_func cb)
4054 ctx->psk_use_session_cb = cb;
4057 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4058 void (*cb) (int write_p, int version,
4059 int content_type, const void *buf,
4060 size_t len, SSL *ssl, void *arg))
4062 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4065 void SSL_set_msg_callback(SSL *ssl,
4066 void (*cb) (int write_p, int version,
4067 int content_type, const void *buf,
4068 size_t len, SSL *ssl, void *arg))
4070 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4073 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4074 int (*cb) (SSL *ssl,
4078 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4079 (void (*)(void))cb);
4082 void SSL_set_not_resumable_session_callback(SSL *ssl,
4083 int (*cb) (SSL *ssl,
4084 int is_forward_secure))
4086 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4087 (void (*)(void))cb);
4090 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4091 size_t (*cb) (SSL *ssl, int type,
4092 size_t len, void *arg))
4094 ctx->record_padding_cb = cb;
4097 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4099 ctx->record_padding_arg = arg;
4102 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4104 return ctx->record_padding_arg;
4107 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4109 /* block size of 0 or 1 is basically no padding */
4110 if (block_size == 1)
4111 ctx->block_padding = 0;
4112 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4113 ctx->block_padding = block_size;
4119 void SSL_set_record_padding_callback(SSL *ssl,
4120 size_t (*cb) (SSL *ssl, int type,
4121 size_t len, void *arg))
4123 ssl->record_padding_cb = cb;
4126 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4128 ssl->record_padding_arg = arg;
4131 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4133 return ssl->record_padding_arg;
4136 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4138 /* block size of 0 or 1 is basically no padding */
4139 if (block_size == 1)
4140 ssl->block_padding = 0;
4141 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4142 ssl->block_padding = block_size;
4149 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4150 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4151 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4152 * Returns the newly allocated ctx;
4155 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4157 ssl_clear_hash_ctx(hash);
4158 *hash = EVP_MD_CTX_new();
4159 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4160 EVP_MD_CTX_free(*hash);
4167 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4170 EVP_MD_CTX_free(*hash);
4174 /* Retrieve handshake hashes */
4175 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4178 EVP_MD_CTX *ctx = NULL;
4179 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4180 int hashleni = EVP_MD_CTX_size(hdgst);
4183 if (hashleni < 0 || (size_t)hashleni > outlen)
4186 ctx = EVP_MD_CTX_new();
4190 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4191 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4194 *hashlen = hashleni;
4198 EVP_MD_CTX_free(ctx);
4202 int SSL_session_reused(SSL *s)
4207 int SSL_is_server(const SSL *s)
4212 #if OPENSSL_API_COMPAT < 0x10100000L
4213 void SSL_set_debug(SSL *s, int debug)
4215 /* Old function was do-nothing anyway... */
4221 void SSL_set_security_level(SSL *s, int level)
4223 s->cert->sec_level = level;
4226 int SSL_get_security_level(const SSL *s)
4228 return s->cert->sec_level;
4231 void SSL_set_security_callback(SSL *s,
4232 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4233 int op, int bits, int nid,
4234 void *other, void *ex))
4236 s->cert->sec_cb = cb;
4239 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4240 const SSL_CTX *ctx, int op,
4241 int bits, int nid, void *other,
4243 return s->cert->sec_cb;
4246 void SSL_set0_security_ex_data(SSL *s, void *ex)
4248 s->cert->sec_ex = ex;
4251 void *SSL_get0_security_ex_data(const SSL *s)
4253 return s->cert->sec_ex;
4256 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4258 ctx->cert->sec_level = level;
4261 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4263 return ctx->cert->sec_level;
4266 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4267 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4268 int op, int bits, int nid,
4269 void *other, void *ex))
4271 ctx->cert->sec_cb = cb;
4274 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4280 return ctx->cert->sec_cb;
4283 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4285 ctx->cert->sec_ex = ex;
4288 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4290 return ctx->cert->sec_ex;
4294 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4295 * can return unsigned long, instead of the generic long return value from the
4296 * control interface.
4298 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4300 return ctx->options;
4303 unsigned long SSL_get_options(const SSL *s)
4308 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4310 return ctx->options |= op;
4313 unsigned long SSL_set_options(SSL *s, unsigned long op)
4315 return s->options |= op;
4318 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4320 return ctx->options &= ~op;
4323 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4325 return s->options &= ~op;
4328 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4330 return s->verified_chain;
4333 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4335 #ifndef OPENSSL_NO_CT
4338 * Moves SCTs from the |src| stack to the |dst| stack.
4339 * The source of each SCT will be set to |origin|.
4340 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4342 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4344 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4345 sct_source_t origin)
4351 *dst = sk_SCT_new_null();
4353 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4358 while ((sct = sk_SCT_pop(src)) != NULL) {
4359 if (SCT_set_source(sct, origin) != 1)
4362 if (sk_SCT_push(*dst, sct) <= 0)
4370 sk_SCT_push(src, sct); /* Put the SCT back */
4375 * Look for data collected during ServerHello and parse if found.
4376 * Returns the number of SCTs extracted.
4378 static int ct_extract_tls_extension_scts(SSL *s)
4380 int scts_extracted = 0;
4382 if (s->ext.scts != NULL) {
4383 const unsigned char *p = s->ext.scts;
4384 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4386 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4388 SCT_LIST_free(scts);
4391 return scts_extracted;
4395 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4396 * contains an SCT X509 extension. They will be stored in |s->scts|.
4398 * - The number of SCTs extracted, assuming an OCSP response exists.
4399 * - 0 if no OCSP response exists or it contains no SCTs.
4400 * - A negative integer if an error occurs.
4402 static int ct_extract_ocsp_response_scts(SSL *s)
4404 # ifndef OPENSSL_NO_OCSP
4405 int scts_extracted = 0;
4406 const unsigned char *p;
4407 OCSP_BASICRESP *br = NULL;
4408 OCSP_RESPONSE *rsp = NULL;
4409 STACK_OF(SCT) *scts = NULL;
4412 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4415 p = s->ext.ocsp.resp;
4416 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4420 br = OCSP_response_get1_basic(rsp);
4424 for (i = 0; i < OCSP_resp_count(br); ++i) {
4425 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4431 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4433 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4434 if (scts_extracted < 0)
4438 SCT_LIST_free(scts);
4439 OCSP_BASICRESP_free(br);
4440 OCSP_RESPONSE_free(rsp);
4441 return scts_extracted;
4443 /* Behave as if no OCSP response exists */
4449 * Attempts to extract SCTs from the peer certificate.
4450 * Return the number of SCTs extracted, or a negative integer if an error
4453 static int ct_extract_x509v3_extension_scts(SSL *s)
4455 int scts_extracted = 0;
4456 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4459 STACK_OF(SCT) *scts =
4460 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4463 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4465 SCT_LIST_free(scts);
4468 return scts_extracted;
4472 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4473 * response (if it exists) and X509v3 extensions in the certificate.
4474 * Returns NULL if an error occurs.
4476 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4478 if (!s->scts_parsed) {
4479 if (ct_extract_tls_extension_scts(s) < 0 ||
4480 ct_extract_ocsp_response_scts(s) < 0 ||
4481 ct_extract_x509v3_extension_scts(s) < 0)
4491 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4492 const STACK_OF(SCT) *scts, void *unused_arg)
4497 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4498 const STACK_OF(SCT) *scts, void *unused_arg)
4500 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4503 for (i = 0; i < count; ++i) {
4504 SCT *sct = sk_SCT_value(scts, i);
4505 int status = SCT_get_validation_status(sct);
4507 if (status == SCT_VALIDATION_STATUS_VALID)
4510 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4514 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4518 * Since code exists that uses the custom extension handler for CT, look
4519 * for this and throw an error if they have already registered to use CT.
4521 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4522 TLSEXT_TYPE_signed_certificate_timestamp))
4524 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4525 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4529 if (callback != NULL) {
4531 * If we are validating CT, then we MUST accept SCTs served via OCSP
4533 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4537 s->ct_validation_callback = callback;
4538 s->ct_validation_callback_arg = arg;
4543 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4544 ssl_ct_validation_cb callback, void *arg)
4547 * Since code exists that uses the custom extension handler for CT, look for
4548 * this and throw an error if they have already registered to use CT.
4550 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4551 TLSEXT_TYPE_signed_certificate_timestamp))
4553 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4554 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4558 ctx->ct_validation_callback = callback;
4559 ctx->ct_validation_callback_arg = arg;
4563 int SSL_ct_is_enabled(const SSL *s)
4565 return s->ct_validation_callback != NULL;
4568 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4570 return ctx->ct_validation_callback != NULL;
4573 int ssl_validate_ct(SSL *s)
4576 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4578 SSL_DANE *dane = &s->dane;
4579 CT_POLICY_EVAL_CTX *ctx = NULL;
4580 const STACK_OF(SCT) *scts;
4583 * If no callback is set, the peer is anonymous, or its chain is invalid,
4584 * skip SCT validation - just return success. Applications that continue
4585 * handshakes without certificates, with unverified chains, or pinned leaf
4586 * certificates are outside the scope of the WebPKI and CT.
4588 * The above exclusions notwithstanding the vast majority of peers will
4589 * have rather ordinary certificate chains validated by typical
4590 * applications that perform certificate verification and therefore will
4591 * process SCTs when enabled.
4593 if (s->ct_validation_callback == NULL || cert == NULL ||
4594 s->verify_result != X509_V_OK ||
4595 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4599 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4600 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4602 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4603 switch (dane->mtlsa->usage) {
4604 case DANETLS_USAGE_DANE_TA:
4605 case DANETLS_USAGE_DANE_EE:
4610 ctx = CT_POLICY_EVAL_CTX_new();
4612 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4616 issuer = sk_X509_value(s->verified_chain, 1);
4617 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4618 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4619 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4620 CT_POLICY_EVAL_CTX_set_time(
4621 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4623 scts = SSL_get0_peer_scts(s);
4626 * This function returns success (> 0) only when all the SCTs are valid, 0
4627 * when some are invalid, and < 0 on various internal errors (out of
4628 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4629 * reason to abort the handshake, that decision is up to the callback.
4630 * Therefore, we error out only in the unexpected case that the return
4631 * value is negative.
4633 * XXX: One might well argue that the return value of this function is an
4634 * unfortunate design choice. Its job is only to determine the validation
4635 * status of each of the provided SCTs. So long as it correctly separates
4636 * the wheat from the chaff it should return success. Failure in this case
4637 * ought to correspond to an inability to carry out its duties.
4639 if (SCT_LIST_validate(scts, ctx) < 0) {
4640 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4644 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4646 ret = 0; /* This function returns 0 on failure */
4649 CT_POLICY_EVAL_CTX_free(ctx);
4651 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4652 * failure return code here. Also the application may wish the complete
4653 * the handshake, and then disconnect cleanly at a higher layer, after
4654 * checking the verification status of the completed connection.
4656 * We therefore force a certificate verification failure which will be
4657 * visible via SSL_get_verify_result() and cached as part of any resumed
4660 * Note: the permissive callback is for information gathering only, always
4661 * returns success, and does not affect verification status. Only the
4662 * strict callback or a custom application-specified callback can trigger
4663 * connection failure or record a verification error.
4666 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4670 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4672 switch (validation_mode) {
4674 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4676 case SSL_CT_VALIDATION_PERMISSIVE:
4677 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4678 case SSL_CT_VALIDATION_STRICT:
4679 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4683 int SSL_enable_ct(SSL *s, int validation_mode)
4685 switch (validation_mode) {
4687 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4689 case SSL_CT_VALIDATION_PERMISSIVE:
4690 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4691 case SSL_CT_VALIDATION_STRICT:
4692 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4696 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4698 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4701 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4703 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4706 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4708 CTLOG_STORE_free(ctx->ctlog_store);
4709 ctx->ctlog_store = logs;
4712 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4714 return ctx->ctlog_store;
4717 #endif /* OPENSSL_NO_CT */
4719 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4722 c->client_hello_cb = cb;
4723 c->client_hello_cb_arg = arg;
4726 int SSL_client_hello_isv2(SSL *s)
4728 if (s->clienthello == NULL)
4730 return s->clienthello->isv2;
4733 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
4735 if (s->clienthello == NULL)
4737 return s->clienthello->legacy_version;
4740 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
4742 if (s->clienthello == NULL)
4745 *out = s->clienthello->random;
4746 return SSL3_RANDOM_SIZE;
4749 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
4751 if (s->clienthello == NULL)
4754 *out = s->clienthello->session_id;
4755 return s->clienthello->session_id_len;
4758 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
4760 if (s->clienthello == NULL)
4763 *out = PACKET_data(&s->clienthello->ciphersuites);
4764 return PACKET_remaining(&s->clienthello->ciphersuites);
4767 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
4769 if (s->clienthello == NULL)
4772 *out = s->clienthello->compressions;
4773 return s->clienthello->compressions_len;
4776 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4782 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4784 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4785 ext = s->clienthello->pre_proc_exts + i;
4789 present = OPENSSL_malloc(sizeof(*present) * num);
4790 if (present == NULL)
4792 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4793 ext = s->clienthello->pre_proc_exts + i;
4795 if (ext->received_order >= num)
4797 present[ext->received_order] = ext->type;
4804 OPENSSL_free(present);
4808 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4814 if (s->clienthello == NULL)
4816 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4817 r = s->clienthello->pre_proc_exts + i;
4818 if (r->present && r->type == type) {
4820 *out = PACKET_data(&r->data);
4822 *outlen = PACKET_remaining(&r->data);
4829 int SSL_free_buffers(SSL *ssl)
4831 RECORD_LAYER *rl = &ssl->rlayer;
4833 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4836 RECORD_LAYER_release(rl);
4840 int SSL_alloc_buffers(SSL *ssl)
4842 return ssl3_setup_buffers(ssl);
4845 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4847 ctx->keylog_callback = cb;
4850 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4852 return ctx->keylog_callback;
4855 static int nss_keylog_int(const char *prefix,
4857 const uint8_t *parameter_1,
4858 size_t parameter_1_len,
4859 const uint8_t *parameter_2,
4860 size_t parameter_2_len)
4863 char *cursor = NULL;
4868 if (ssl->ctx->keylog_callback == NULL) return 1;
4871 * Our output buffer will contain the following strings, rendered with
4872 * space characters in between, terminated by a NULL character: first the
4873 * prefix, then the first parameter, then the second parameter. The
4874 * meaning of each parameter depends on the specific key material being
4875 * logged. Note that the first and second parameters are encoded in
4876 * hexadecimal, so we need a buffer that is twice their lengths.
4878 prefix_len = strlen(prefix);
4879 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4880 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4881 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4885 strcpy(cursor, prefix);
4886 cursor += prefix_len;
4889 for (i = 0; i < parameter_1_len; i++) {
4890 sprintf(cursor, "%02x", parameter_1[i]);
4895 for (i = 0; i < parameter_2_len; i++) {
4896 sprintf(cursor, "%02x", parameter_2[i]);
4901 ssl->ctx->keylog_callback(ssl, (const char *)out);
4907 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4908 const uint8_t *encrypted_premaster,
4909 size_t encrypted_premaster_len,
4910 const uint8_t *premaster,
4911 size_t premaster_len)
4913 if (encrypted_premaster_len < 8) {
4914 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4918 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4919 return nss_keylog_int("RSA",
4921 encrypted_premaster,
4927 int ssl_log_secret(SSL *ssl,
4929 const uint8_t *secret,
4932 return nss_keylog_int(label,
4934 ssl->s3->client_random,
4940 #define SSLV2_CIPHER_LEN 3
4942 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4947 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4949 if (PACKET_remaining(cipher_suites) == 0) {
4950 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4951 *al = SSL_AD_ILLEGAL_PARAMETER;
4955 if (PACKET_remaining(cipher_suites) % n != 0) {
4956 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4957 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4958 *al = SSL_AD_DECODE_ERROR;
4962 OPENSSL_free(s->s3->tmp.ciphers_raw);
4963 s->s3->tmp.ciphers_raw = NULL;
4964 s->s3->tmp.ciphers_rawlen = 0;
4967 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4968 PACKET sslv2ciphers = *cipher_suites;
4969 unsigned int leadbyte;
4973 * We store the raw ciphers list in SSLv3+ format so we need to do some
4974 * preprocessing to convert the list first. If there are any SSLv2 only
4975 * ciphersuites with a non-zero leading byte then we are going to
4976 * slightly over allocate because we won't store those. But that isn't a
4979 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4980 s->s3->tmp.ciphers_raw = raw;
4982 *al = SSL_AD_INTERNAL_ERROR;
4985 for (s->s3->tmp.ciphers_rawlen = 0;
4986 PACKET_remaining(&sslv2ciphers) > 0;
4987 raw += TLS_CIPHER_LEN) {
4988 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4990 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4993 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4994 *al = SSL_AD_DECODE_ERROR;
4995 OPENSSL_free(s->s3->tmp.ciphers_raw);
4996 s->s3->tmp.ciphers_raw = NULL;
4997 s->s3->tmp.ciphers_rawlen = 0;
5001 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5003 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5004 &s->s3->tmp.ciphers_rawlen)) {
5005 *al = SSL_AD_INTERNAL_ERROR;
5013 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5014 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5015 STACK_OF(SSL_CIPHER) **scsvs)
5020 if (!PACKET_buf_init(&pkt, bytes, len))
5022 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5025 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5026 STACK_OF(SSL_CIPHER) **skp,
5027 STACK_OF(SSL_CIPHER) **scsvs_out,
5028 int sslv2format, int *al)
5030 const SSL_CIPHER *c;
5031 STACK_OF(SSL_CIPHER) *sk = NULL;
5032 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5034 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5035 unsigned char cipher[SSLV2_CIPHER_LEN];
5037 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5039 if (PACKET_remaining(cipher_suites) == 0) {
5040 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5041 *al = SSL_AD_ILLEGAL_PARAMETER;
5045 if (PACKET_remaining(cipher_suites) % n != 0) {
5046 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5047 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5048 *al = SSL_AD_DECODE_ERROR;
5052 sk = sk_SSL_CIPHER_new_null();
5053 scsvs = sk_SSL_CIPHER_new_null();
5054 if (sk == NULL || scsvs == NULL) {
5055 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5056 *al = SSL_AD_INTERNAL_ERROR;
5060 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5062 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5063 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5064 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5066 if (sslv2format && cipher[0] != '\0')
5069 /* For SSLv2-compat, ignore leading 0-byte. */
5070 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5072 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5073 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5074 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5075 *al = SSL_AD_INTERNAL_ERROR;
5080 if (PACKET_remaining(cipher_suites) > 0) {
5081 *al = SSL_AD_DECODE_ERROR;
5082 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5089 sk_SSL_CIPHER_free(sk);
5090 if (scsvs_out != NULL)
5093 sk_SSL_CIPHER_free(scsvs);
5096 sk_SSL_CIPHER_free(sk);
5097 sk_SSL_CIPHER_free(scsvs);
5101 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5103 ctx->max_early_data = max_early_data;
5108 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5110 return ctx->max_early_data;
5113 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5115 s->max_early_data = max_early_data;
5120 uint32_t SSL_get_max_early_data(const SSL *s)
5122 return s->max_early_data;
5125 int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5127 if (s->drbg != NULL)
5128 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5129 return RAND_bytes(rnd, (int)size);