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/lhash.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include "internal/cryptlib.h"
24 #include "internal/rand.h"
25 #include "internal/refcount.h"
27 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
29 SSL3_ENC_METHOD ssl3_undef_enc_method = {
31 * evil casts, but these functions are only called if there's a library
34 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
35 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
36 ssl_undefined_function,
37 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
38 ssl_undefined_function,
39 (int (*)(SSL *, int))ssl_undefined_function,
40 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
41 ssl_undefined_function,
42 NULL, /* client_finished_label */
43 0, /* client_finished_label_len */
44 NULL, /* server_finished_label */
45 0, /* server_finished_label_len */
46 (int (*)(int))ssl_undefined_function,
47 (int (*)(SSL *, unsigned char *, size_t, const char *,
48 size_t, const unsigned char *, size_t,
49 int use_context))ssl_undefined_function,
52 struct ssl_async_args {
56 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
58 int (*func_read) (SSL *, void *, size_t, size_t *);
59 int (*func_write) (SSL *, const void *, size_t, size_t *);
60 int (*func_other) (SSL *);
70 DANETLS_MATCHING_FULL, 0, NID_undef
73 DANETLS_MATCHING_2256, 1, NID_sha256
76 DANETLS_MATCHING_2512, 2, NID_sha512
80 static int dane_ctx_enable(struct dane_ctx_st *dctx)
84 uint8_t mdmax = DANETLS_MATCHING_LAST;
85 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
88 if (dctx->mdevp != NULL)
91 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
92 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
94 if (mdord == NULL || mdevp == NULL) {
97 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
101 /* Install default entries */
102 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
105 if (dane_mds[i].nid == NID_undef ||
106 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
108 mdevp[dane_mds[i].mtype] = md;
109 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
119 static void dane_ctx_final(struct dane_ctx_st *dctx)
121 OPENSSL_free(dctx->mdevp);
124 OPENSSL_free(dctx->mdord);
129 static void tlsa_free(danetls_record *t)
133 OPENSSL_free(t->data);
134 EVP_PKEY_free(t->spki);
138 static void dane_final(SSL_DANE *dane)
140 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
143 sk_X509_pop_free(dane->certs, X509_free);
146 X509_free(dane->mcert);
154 * dane_copy - Copy dane configuration, sans verification state.
156 static int ssl_dane_dup(SSL *to, SSL *from)
161 if (!DANETLS_ENABLED(&from->dane))
164 num = sk_danetls_record_num(from->dane.trecs);
165 dane_final(&to->dane);
166 to->dane.flags = from->dane.flags;
167 to->dane.dctx = &to->ctx->dane;
168 to->dane.trecs = sk_danetls_record_new_null();
170 if (to->dane.trecs == NULL) {
171 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
174 if (!sk_danetls_record_reserve(to->dane.trecs, num))
177 for (i = 0; i < num; ++i) {
178 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
180 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
181 t->data, t->dlen) <= 0)
187 static int dane_mtype_set(struct dane_ctx_st *dctx,
188 const EVP_MD *md, uint8_t mtype, uint8_t ord)
192 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
193 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
197 if (mtype > dctx->mdmax) {
198 const EVP_MD **mdevp;
200 int n = ((int)mtype) + 1;
202 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
204 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
209 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
211 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
216 /* Zero-fill any gaps */
217 for (i = dctx->mdmax + 1; i < mtype; ++i) {
225 dctx->mdevp[mtype] = md;
226 /* Coerce ordinal of disabled matching types to 0 */
227 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
232 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
234 if (mtype > dane->dctx->mdmax)
236 return dane->dctx->mdevp[mtype];
239 static int dane_tlsa_add(SSL_DANE *dane,
242 uint8_t mtype, unsigned char *data, size_t dlen)
245 const EVP_MD *md = NULL;
246 int ilen = (int)dlen;
250 if (dane->trecs == NULL) {
251 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
255 if (ilen < 0 || dlen != (size_t)ilen) {
256 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
260 if (usage > DANETLS_USAGE_LAST) {
261 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
265 if (selector > DANETLS_SELECTOR_LAST) {
266 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
270 if (mtype != DANETLS_MATCHING_FULL) {
271 md = tlsa_md_get(dane, mtype);
273 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
278 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
279 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
283 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
287 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
288 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
293 t->selector = selector;
295 t->data = OPENSSL_malloc(dlen);
296 if (t->data == NULL) {
298 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
301 memcpy(t->data, data, dlen);
304 /* Validate and cache full certificate or public key */
305 if (mtype == DANETLS_MATCHING_FULL) {
306 const unsigned char *p = data;
308 EVP_PKEY *pkey = NULL;
311 case DANETLS_SELECTOR_CERT:
312 if (!d2i_X509(&cert, &p, ilen) || p < data ||
313 dlen != (size_t)(p - data)) {
315 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
318 if (X509_get0_pubkey(cert) == NULL) {
320 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
324 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
330 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
331 * records that contain full certificates of trust-anchors that are
332 * not present in the wire chain. For usage PKIX-TA(0), we augment
333 * the chain with untrusted Full(0) certificates from DNS, in case
334 * they are missing from the chain.
336 if ((dane->certs == NULL &&
337 (dane->certs = sk_X509_new_null()) == NULL) ||
338 !sk_X509_push(dane->certs, cert)) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
346 case DANETLS_SELECTOR_SPKI:
347 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
348 dlen != (size_t)(p - data)) {
350 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
355 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
356 * records that contain full bare keys of trust-anchors that are
357 * not present in the wire chain.
359 if (usage == DANETLS_USAGE_DANE_TA)
368 * Find the right insertion point for the new record.
370 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
371 * they can be processed first, as they require no chain building, and no
372 * expiration or hostname checks. Because DANE-EE(3) is numerically
373 * largest, this is accomplished via descending sort by "usage".
375 * We also sort in descending order by matching ordinal to simplify
376 * the implementation of digest agility in the verification code.
378 * The choice of order for the selector is not significant, so we
379 * use the same descending order for consistency.
381 num = sk_danetls_record_num(dane->trecs);
382 for (i = 0; i < num; ++i) {
383 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
385 if (rec->usage > usage)
387 if (rec->usage < usage)
389 if (rec->selector > selector)
391 if (rec->selector < selector)
393 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
398 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
400 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
403 dane->umask |= DANETLS_USAGE_BIT(usage);
409 * Return 0 if there is only one version configured and it was disabled
410 * at configure time. Return 1 otherwise.
412 static int ssl_check_allowed_versions(int min_version, int max_version)
414 int minisdtls = 0, maxisdtls = 0;
416 /* Figure out if we're doing DTLS versions or TLS versions */
417 if (min_version == DTLS1_BAD_VER
418 || min_version >> 8 == DTLS1_VERSION_MAJOR)
420 if (max_version == DTLS1_BAD_VER
421 || max_version >> 8 == DTLS1_VERSION_MAJOR)
423 /* A wildcard version of 0 could be DTLS or TLS. */
424 if ((minisdtls && !maxisdtls && max_version != 0)
425 || (maxisdtls && !minisdtls && min_version != 0)) {
426 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
430 if (minisdtls || maxisdtls) {
431 /* Do DTLS version checks. */
432 if (min_version == 0)
433 /* Ignore DTLS1_BAD_VER */
434 min_version = DTLS1_VERSION;
435 if (max_version == 0)
436 max_version = DTLS1_2_VERSION;
437 #ifdef OPENSSL_NO_DTLS1_2
438 if (max_version == DTLS1_2_VERSION)
439 max_version = DTLS1_VERSION;
441 #ifdef OPENSSL_NO_DTLS1
442 if (min_version == DTLS1_VERSION)
443 min_version = DTLS1_2_VERSION;
445 /* Done massaging versions; do the check. */
447 #ifdef OPENSSL_NO_DTLS1
448 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
449 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
451 #ifdef OPENSSL_NO_DTLS1_2
452 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
453 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
458 /* Regular TLS version checks. */
459 if (min_version == 0)
460 min_version = SSL3_VERSION;
461 if (max_version == 0)
462 max_version = TLS1_3_VERSION;
463 #ifdef OPENSSL_NO_TLS1_3
464 if (max_version == TLS1_3_VERSION)
465 max_version = TLS1_2_VERSION;
467 #ifdef OPENSSL_NO_TLS1_2
468 if (max_version == TLS1_2_VERSION)
469 max_version = TLS1_1_VERSION;
471 #ifdef OPENSSL_NO_TLS1_1
472 if (max_version == TLS1_1_VERSION)
473 max_version = TLS1_VERSION;
475 #ifdef OPENSSL_NO_TLS1
476 if (max_version == TLS1_VERSION)
477 max_version = SSL3_VERSION;
479 #ifdef OPENSSL_NO_SSL3
480 if (min_version == SSL3_VERSION)
481 min_version = TLS1_VERSION;
483 #ifdef OPENSSL_NO_TLS1
484 if (min_version == TLS1_VERSION)
485 min_version = TLS1_1_VERSION;
487 #ifdef OPENSSL_NO_TLS1_1
488 if (min_version == TLS1_1_VERSION)
489 min_version = TLS1_2_VERSION;
491 #ifdef OPENSSL_NO_TLS1_2
492 if (min_version == TLS1_2_VERSION)
493 min_version = TLS1_3_VERSION;
495 /* Done massaging versions; do the check. */
497 #ifdef OPENSSL_NO_SSL3
498 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
500 #ifdef OPENSSL_NO_TLS1
501 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
503 #ifdef OPENSSL_NO_TLS1_1
504 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
506 #ifdef OPENSSL_NO_TLS1_2
507 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
509 #ifdef OPENSSL_NO_TLS1_3
510 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
518 static void clear_ciphers(SSL *s)
520 /* clear the current cipher */
521 ssl_clear_cipher_ctx(s);
522 ssl_clear_hash_ctx(&s->read_hash);
523 ssl_clear_hash_ctx(&s->write_hash);
526 int SSL_clear(SSL *s)
528 if (s->method == NULL) {
529 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
533 if (ssl_clear_bad_session(s)) {
534 SSL_SESSION_free(s->session);
537 SSL_SESSION_free(s->psksession);
538 s->psksession = NULL;
539 OPENSSL_free(s->psksession_id);
540 s->psksession_id = NULL;
541 s->psksession_id_len = 0;
547 if (s->renegotiate) {
548 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
552 ossl_statem_clear(s);
554 s->version = s->method->version;
555 s->client_version = s->version;
556 s->rwstate = SSL_NOTHING;
558 BUF_MEM_free(s->init_buf);
563 s->key_update = SSL_KEY_UPDATE_NONE;
565 /* Reset DANE verification result state */
568 X509_free(s->dane.mcert);
569 s->dane.mcert = NULL;
570 s->dane.mtlsa = NULL;
572 /* Clear the verification result peername */
573 X509_VERIFY_PARAM_move_peername(s->param, NULL);
576 * Check to see if we were changed into a different method, if so, revert
579 if (s->method != s->ctx->method) {
580 s->method->ssl_free(s);
581 s->method = s->ctx->method;
582 if (!s->method->ssl_new(s))
585 if (!s->method->ssl_clear(s))
589 RECORD_LAYER_clear(&s->rlayer);
594 /** Used to change an SSL_CTXs default SSL method type */
595 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
597 STACK_OF(SSL_CIPHER) *sk;
601 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
602 &(ctx->cipher_list_by_id),
603 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
604 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
605 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
611 SSL *SSL_new(SSL_CTX *ctx)
616 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
619 if (ctx->method == NULL) {
620 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
624 s = OPENSSL_zalloc(sizeof(*s));
628 s->lock = CRYPTO_THREAD_lock_new();
633 * If not using the standard RAND (say for fuzzing), then don't use a
636 if (RAND_get_rand_method() == RAND_OpenSSL()) {
637 s->drbg = RAND_DRBG_new(NID_aes_128_ctr, RAND_DRBG_FLAG_CTR_USE_DF,
638 RAND_DRBG_get0_global());
640 || RAND_DRBG_instantiate(s->drbg, NULL, 0) == 0) {
641 CRYPTO_THREAD_lock_free(s->lock);
646 RECORD_LAYER_init(&s->rlayer, s);
648 s->options = ctx->options;
649 s->dane.flags = ctx->dane.flags;
650 s->min_proto_version = ctx->min_proto_version;
651 s->max_proto_version = ctx->max_proto_version;
653 s->max_cert_list = ctx->max_cert_list;
655 s->max_early_data = ctx->max_early_data;
658 * Earlier library versions used to copy the pointer to the CERT, not
659 * its contents; only when setting new parameters for the per-SSL
660 * copy, ssl_cert_new would be called (and the direct reference to
661 * the per-SSL_CTX settings would be lost, but those still were
662 * indirectly accessed for various purposes, and for that reason they
663 * used to be known as s->ctx->default_cert). Now we don't look at the
664 * SSL_CTX's CERT after having duplicated it once.
666 s->cert = ssl_cert_dup(ctx->cert);
670 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
671 s->msg_callback = ctx->msg_callback;
672 s->msg_callback_arg = ctx->msg_callback_arg;
673 s->verify_mode = ctx->verify_mode;
674 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
675 s->record_padding_cb = ctx->record_padding_cb;
676 s->record_padding_arg = ctx->record_padding_arg;
677 s->block_padding = ctx->block_padding;
678 s->sid_ctx_length = ctx->sid_ctx_length;
679 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
681 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
682 s->verify_callback = ctx->default_verify_callback;
683 s->generate_session_id = ctx->generate_session_id;
685 s->param = X509_VERIFY_PARAM_new();
686 if (s->param == NULL)
688 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
689 s->quiet_shutdown = ctx->quiet_shutdown;
690 s->max_send_fragment = ctx->max_send_fragment;
691 s->split_send_fragment = ctx->split_send_fragment;
692 s->max_pipelines = ctx->max_pipelines;
693 if (s->max_pipelines > 1)
694 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
695 if (ctx->default_read_buf_len > 0)
696 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
701 s->ext.debug_arg = NULL;
702 s->ext.ticket_expected = 0;
703 s->ext.status_type = ctx->ext.status_type;
704 s->ext.status_expected = 0;
705 s->ext.ocsp.ids = NULL;
706 s->ext.ocsp.exts = NULL;
707 s->ext.ocsp.resp = NULL;
708 s->ext.ocsp.resp_len = 0;
710 s->session_ctx = ctx;
711 #ifndef OPENSSL_NO_EC
712 if (ctx->ext.ecpointformats) {
713 s->ext.ecpointformats =
714 OPENSSL_memdup(ctx->ext.ecpointformats,
715 ctx->ext.ecpointformats_len);
716 if (!s->ext.ecpointformats)
718 s->ext.ecpointformats_len =
719 ctx->ext.ecpointformats_len;
721 if (ctx->ext.supportedgroups) {
722 s->ext.supportedgroups =
723 OPENSSL_memdup(ctx->ext.supportedgroups,
724 ctx->ext.supportedgroups_len
725 * sizeof(*ctx->ext.supportedgroups));
726 if (!s->ext.supportedgroups)
728 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
731 #ifndef OPENSSL_NO_NEXTPROTONEG
735 if (s->ctx->ext.alpn) {
736 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
737 if (s->ext.alpn == NULL)
739 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
740 s->ext.alpn_len = s->ctx->ext.alpn_len;
743 s->verified_chain = NULL;
744 s->verify_result = X509_V_OK;
746 s->default_passwd_callback = ctx->default_passwd_callback;
747 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
749 s->method = ctx->method;
751 s->key_update = SSL_KEY_UPDATE_NONE;
753 if (!s->method->ssl_new(s))
756 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
761 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
764 #ifndef OPENSSL_NO_PSK
765 s->psk_client_callback = ctx->psk_client_callback;
766 s->psk_server_callback = ctx->psk_server_callback;
768 s->psk_find_session_cb = ctx->psk_find_session_cb;
769 s->psk_use_session_cb = ctx->psk_use_session_cb;
773 #ifndef OPENSSL_NO_CT
774 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
775 ctx->ct_validation_callback_arg))
782 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
786 int SSL_is_dtls(const SSL *s)
788 return SSL_IS_DTLS(s) ? 1 : 0;
791 int SSL_up_ref(SSL *s)
795 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
798 REF_PRINT_COUNT("SSL", s);
799 REF_ASSERT_ISNT(i < 2);
800 return ((i > 1) ? 1 : 0);
803 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
804 unsigned int sid_ctx_len)
806 if (sid_ctx_len > sizeof ctx->sid_ctx) {
807 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
808 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
811 ctx->sid_ctx_length = sid_ctx_len;
812 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
817 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
818 unsigned int sid_ctx_len)
820 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
821 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
822 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
825 ssl->sid_ctx_length = sid_ctx_len;
826 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
831 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
833 CRYPTO_THREAD_write_lock(ctx->lock);
834 ctx->generate_session_id = cb;
835 CRYPTO_THREAD_unlock(ctx->lock);
839 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
841 CRYPTO_THREAD_write_lock(ssl->lock);
842 ssl->generate_session_id = cb;
843 CRYPTO_THREAD_unlock(ssl->lock);
847 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
851 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
852 * we can "construct" a session to give us the desired check - i.e. to
853 * find if there's a session in the hash table that would conflict with
854 * any new session built out of this id/id_len and the ssl_version in use
859 if (id_len > sizeof r.session_id)
862 r.ssl_version = ssl->version;
863 r.session_id_length = id_len;
864 memcpy(r.session_id, id, id_len);
866 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
867 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
868 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
872 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
874 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
877 int SSL_set_purpose(SSL *s, int purpose)
879 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
882 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
884 return X509_VERIFY_PARAM_set_trust(s->param, trust);
887 int SSL_set_trust(SSL *s, int trust)
889 return X509_VERIFY_PARAM_set_trust(s->param, trust);
892 int SSL_set1_host(SSL *s, const char *hostname)
894 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
897 int SSL_add1_host(SSL *s, const char *hostname)
899 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
902 void SSL_set_hostflags(SSL *s, unsigned int flags)
904 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
907 const char *SSL_get0_peername(SSL *s)
909 return X509_VERIFY_PARAM_get0_peername(s->param);
912 int SSL_CTX_dane_enable(SSL_CTX *ctx)
914 return dane_ctx_enable(&ctx->dane);
917 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
919 unsigned long orig = ctx->dane.flags;
921 ctx->dane.flags |= flags;
925 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
927 unsigned long orig = ctx->dane.flags;
929 ctx->dane.flags &= ~flags;
933 int SSL_dane_enable(SSL *s, const char *basedomain)
935 SSL_DANE *dane = &s->dane;
937 if (s->ctx->dane.mdmax == 0) {
938 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
941 if (dane->trecs != NULL) {
942 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
947 * Default SNI name. This rejects empty names, while set1_host below
948 * accepts them and disables host name checks. To avoid side-effects with
949 * invalid input, set the SNI name first.
951 if (s->ext.hostname == NULL) {
952 if (!SSL_set_tlsext_host_name(s, basedomain)) {
953 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
958 /* Primary RFC6125 reference identifier */
959 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
960 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
966 dane->dctx = &s->ctx->dane;
967 dane->trecs = sk_danetls_record_new_null();
969 if (dane->trecs == NULL) {
970 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
976 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
978 unsigned long orig = ssl->dane.flags;
980 ssl->dane.flags |= flags;
984 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
986 unsigned long orig = ssl->dane.flags;
988 ssl->dane.flags &= ~flags;
992 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
994 SSL_DANE *dane = &s->dane;
996 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1000 *mcert = dane->mcert;
1002 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1007 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1008 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1010 SSL_DANE *dane = &s->dane;
1012 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1016 *usage = dane->mtlsa->usage;
1018 *selector = dane->mtlsa->selector;
1020 *mtype = dane->mtlsa->mtype;
1022 *data = dane->mtlsa->data;
1024 *dlen = dane->mtlsa->dlen;
1029 SSL_DANE *SSL_get0_dane(SSL *s)
1034 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1035 uint8_t mtype, unsigned char *data, size_t dlen)
1037 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1040 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1043 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1046 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1048 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1051 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1053 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1056 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1061 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1066 void SSL_certs_clear(SSL *s)
1068 ssl_cert_clear_certs(s->cert);
1071 void SSL_free(SSL *s)
1078 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1079 REF_PRINT_COUNT("SSL", s);
1082 REF_ASSERT_ISNT(i < 0);
1084 X509_VERIFY_PARAM_free(s->param);
1085 dane_final(&s->dane);
1086 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1088 /* Ignore return value */
1089 ssl_free_wbio_buffer(s);
1091 BIO_free_all(s->wbio);
1092 BIO_free_all(s->rbio);
1094 BUF_MEM_free(s->init_buf);
1096 /* add extra stuff */
1097 sk_SSL_CIPHER_free(s->cipher_list);
1098 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1100 /* Make the next call work :-) */
1101 if (s->session != NULL) {
1102 ssl_clear_bad_session(s);
1103 SSL_SESSION_free(s->session);
1105 SSL_SESSION_free(s->psksession);
1106 OPENSSL_free(s->psksession_id);
1110 ssl_cert_free(s->cert);
1111 /* Free up if allocated */
1113 OPENSSL_free(s->ext.hostname);
1114 SSL_CTX_free(s->session_ctx);
1115 #ifndef OPENSSL_NO_EC
1116 OPENSSL_free(s->ext.ecpointformats);
1117 OPENSSL_free(s->ext.supportedgroups);
1118 #endif /* OPENSSL_NO_EC */
1119 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1120 #ifndef OPENSSL_NO_OCSP
1121 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1123 #ifndef OPENSSL_NO_CT
1124 SCT_LIST_free(s->scts);
1125 OPENSSL_free(s->ext.scts);
1127 OPENSSL_free(s->ext.ocsp.resp);
1128 OPENSSL_free(s->ext.alpn);
1129 OPENSSL_free(s->ext.tls13_cookie);
1130 OPENSSL_free(s->clienthello);
1132 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1134 sk_X509_pop_free(s->verified_chain, X509_free);
1136 if (s->method != NULL)
1137 s->method->ssl_free(s);
1139 RECORD_LAYER_release(&s->rlayer);
1141 SSL_CTX_free(s->ctx);
1143 ASYNC_WAIT_CTX_free(s->waitctx);
1145 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1146 OPENSSL_free(s->ext.npn);
1149 #ifndef OPENSSL_NO_SRTP
1150 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1153 RAND_DRBG_free(s->drbg);
1154 CRYPTO_THREAD_lock_free(s->lock);
1159 void SSL_set0_rbio(SSL *s, BIO *rbio)
1161 BIO_free_all(s->rbio);
1165 void SSL_set0_wbio(SSL *s, BIO *wbio)
1168 * If the output buffering BIO is still in place, remove it
1170 if (s->bbio != NULL)
1171 s->wbio = BIO_pop(s->wbio);
1173 BIO_free_all(s->wbio);
1176 /* Re-attach |bbio| to the new |wbio|. */
1177 if (s->bbio != NULL)
1178 s->wbio = BIO_push(s->bbio, s->wbio);
1181 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1184 * For historical reasons, this function has many different cases in
1185 * ownership handling.
1188 /* If nothing has changed, do nothing */
1189 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1193 * If the two arguments are equal then one fewer reference is granted by the
1194 * caller than we want to take
1196 if (rbio != NULL && rbio == wbio)
1200 * If only the wbio is changed only adopt one reference.
1202 if (rbio == SSL_get_rbio(s)) {
1203 SSL_set0_wbio(s, wbio);
1207 * There is an asymmetry here for historical reasons. If only the rbio is
1208 * changed AND the rbio and wbio were originally different, then we only
1209 * adopt one reference.
1211 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1212 SSL_set0_rbio(s, rbio);
1216 /* Otherwise, adopt both references. */
1217 SSL_set0_rbio(s, rbio);
1218 SSL_set0_wbio(s, wbio);
1221 BIO *SSL_get_rbio(const SSL *s)
1226 BIO *SSL_get_wbio(const SSL *s)
1228 if (s->bbio != NULL) {
1230 * If |bbio| is active, the true caller-configured BIO is its
1233 return BIO_next(s->bbio);
1238 int SSL_get_fd(const SSL *s)
1240 return SSL_get_rfd(s);
1243 int SSL_get_rfd(const SSL *s)
1248 b = SSL_get_rbio(s);
1249 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1251 BIO_get_fd(r, &ret);
1255 int SSL_get_wfd(const SSL *s)
1260 b = SSL_get_wbio(s);
1261 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1263 BIO_get_fd(r, &ret);
1267 #ifndef OPENSSL_NO_SOCK
1268 int SSL_set_fd(SSL *s, int fd)
1273 bio = BIO_new(BIO_s_socket());
1276 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1279 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1280 SSL_set_bio(s, bio, bio);
1286 int SSL_set_wfd(SSL *s, int fd)
1288 BIO *rbio = SSL_get_rbio(s);
1290 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1291 || (int)BIO_get_fd(rbio, NULL) != fd) {
1292 BIO *bio = BIO_new(BIO_s_socket());
1295 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1298 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1299 SSL_set0_wbio(s, bio);
1302 SSL_set0_wbio(s, rbio);
1307 int SSL_set_rfd(SSL *s, int fd)
1309 BIO *wbio = SSL_get_wbio(s);
1311 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1312 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1313 BIO *bio = BIO_new(BIO_s_socket());
1316 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1319 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1320 SSL_set0_rbio(s, bio);
1323 SSL_set0_rbio(s, wbio);
1330 /* return length of latest Finished message we sent, copy to 'buf' */
1331 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1335 if (s->s3 != NULL) {
1336 ret = s->s3->tmp.finish_md_len;
1339 memcpy(buf, s->s3->tmp.finish_md, count);
1344 /* return length of latest Finished message we expected, copy to 'buf' */
1345 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1349 if (s->s3 != NULL) {
1350 ret = s->s3->tmp.peer_finish_md_len;
1353 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1358 int SSL_get_verify_mode(const SSL *s)
1360 return (s->verify_mode);
1363 int SSL_get_verify_depth(const SSL *s)
1365 return X509_VERIFY_PARAM_get_depth(s->param);
1368 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1369 return (s->verify_callback);
1372 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1374 return (ctx->verify_mode);
1377 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1379 return X509_VERIFY_PARAM_get_depth(ctx->param);
1382 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1383 return (ctx->default_verify_callback);
1386 void SSL_set_verify(SSL *s, int mode,
1387 int (*callback) (int ok, X509_STORE_CTX *ctx))
1389 s->verify_mode = mode;
1390 if (callback != NULL)
1391 s->verify_callback = callback;
1394 void SSL_set_verify_depth(SSL *s, int depth)
1396 X509_VERIFY_PARAM_set_depth(s->param, depth);
1399 void SSL_set_read_ahead(SSL *s, int yes)
1401 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1404 int SSL_get_read_ahead(const SSL *s)
1406 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1409 int SSL_pending(const SSL *s)
1411 size_t pending = s->method->ssl_pending(s);
1414 * SSL_pending cannot work properly if read-ahead is enabled
1415 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1416 * impossible to fix since SSL_pending cannot report errors that may be
1417 * observed while scanning the new data. (Note that SSL_pending() is
1418 * often used as a boolean value, so we'd better not return -1.)
1420 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1421 * we just return INT_MAX.
1423 return pending < INT_MAX ? (int)pending : INT_MAX;
1426 int SSL_has_pending(const SSL *s)
1429 * Similar to SSL_pending() but returns a 1 to indicate that we have
1430 * unprocessed data available or 0 otherwise (as opposed to the number of
1431 * bytes available). Unlike SSL_pending() this will take into account
1432 * read_ahead data. A 1 return simply indicates that we have unprocessed
1433 * data. That data may not result in any application data, or we may fail
1434 * to parse the records for some reason.
1436 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1439 return RECORD_LAYER_read_pending(&s->rlayer);
1442 X509 *SSL_get_peer_certificate(const SSL *s)
1446 if ((s == NULL) || (s->session == NULL))
1449 r = s->session->peer;
1459 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1463 if ((s == NULL) || (s->session == NULL))
1466 r = s->session->peer_chain;
1469 * If we are a client, cert_chain includes the peer's own certificate; if
1470 * we are a server, it does not.
1477 * Now in theory, since the calling process own 't' it should be safe to
1478 * modify. We need to be able to read f without being hassled
1480 int SSL_copy_session_id(SSL *t, const SSL *f)
1483 /* Do we need to to SSL locking? */
1484 if (!SSL_set_session(t, SSL_get_session(f))) {
1489 * what if we are setup for one protocol version but want to talk another
1491 if (t->method != f->method) {
1492 t->method->ssl_free(t);
1493 t->method = f->method;
1494 if (t->method->ssl_new(t) == 0)
1498 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1499 ssl_cert_free(t->cert);
1501 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1508 /* Fix this so it checks all the valid key/cert options */
1509 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1511 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1512 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1515 if (ctx->cert->key->privatekey == NULL) {
1516 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1519 return (X509_check_private_key
1520 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1523 /* Fix this function so that it takes an optional type parameter */
1524 int SSL_check_private_key(const SSL *ssl)
1527 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1530 if (ssl->cert->key->x509 == NULL) {
1531 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1534 if (ssl->cert->key->privatekey == NULL) {
1535 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1538 return (X509_check_private_key(ssl->cert->key->x509,
1539 ssl->cert->key->privatekey));
1542 int SSL_waiting_for_async(SSL *s)
1550 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1552 ASYNC_WAIT_CTX *ctx = s->waitctx;
1556 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1559 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1560 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1562 ASYNC_WAIT_CTX *ctx = s->waitctx;
1566 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1570 int SSL_accept(SSL *s)
1572 if (s->handshake_func == NULL) {
1573 /* Not properly initialized yet */
1574 SSL_set_accept_state(s);
1577 return SSL_do_handshake(s);
1580 int SSL_connect(SSL *s)
1582 if (s->handshake_func == NULL) {
1583 /* Not properly initialized yet */
1584 SSL_set_connect_state(s);
1587 return SSL_do_handshake(s);
1590 long SSL_get_default_timeout(const SSL *s)
1592 return (s->method->get_timeout());
1595 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1596 int (*func) (void *))
1599 if (s->waitctx == NULL) {
1600 s->waitctx = ASYNC_WAIT_CTX_new();
1601 if (s->waitctx == NULL)
1604 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1605 sizeof(struct ssl_async_args))) {
1607 s->rwstate = SSL_NOTHING;
1608 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1611 s->rwstate = SSL_ASYNC_PAUSED;
1614 s->rwstate = SSL_ASYNC_NO_JOBS;
1620 s->rwstate = SSL_NOTHING;
1621 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1622 /* Shouldn't happen */
1627 static int ssl_io_intern(void *vargs)
1629 struct ssl_async_args *args;
1634 args = (struct ssl_async_args *)vargs;
1638 switch (args->type) {
1640 return args->f.func_read(s, buf, num, &s->asyncrw);
1642 return args->f.func_write(s, buf, num, &s->asyncrw);
1644 return args->f.func_other(s);
1649 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1651 if (s->handshake_func == NULL) {
1652 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1656 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1657 s->rwstate = SSL_NOTHING;
1661 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1662 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1663 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1667 * If we are a client and haven't received the ServerHello etc then we
1670 ossl_statem_check_finish_init(s, 0);
1672 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1673 struct ssl_async_args args;
1679 args.type = READFUNC;
1680 args.f.func_read = s->method->ssl_read;
1682 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1683 *readbytes = s->asyncrw;
1686 return s->method->ssl_read(s, buf, num, readbytes);
1690 int SSL_read(SSL *s, void *buf, int num)
1696 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1700 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1703 * The cast is safe here because ret should be <= INT_MAX because num is
1707 ret = (int)readbytes;
1712 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1714 int ret = ssl_read_internal(s, buf, num, readbytes);
1721 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1726 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1727 return SSL_READ_EARLY_DATA_ERROR;
1730 switch (s->early_data_state) {
1731 case SSL_EARLY_DATA_NONE:
1732 if (!SSL_in_before(s)) {
1733 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1734 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1735 return SSL_READ_EARLY_DATA_ERROR;
1739 case SSL_EARLY_DATA_ACCEPT_RETRY:
1740 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1741 ret = SSL_accept(s);
1744 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1745 return SSL_READ_EARLY_DATA_ERROR;
1749 case SSL_EARLY_DATA_READ_RETRY:
1750 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1751 s->early_data_state = SSL_EARLY_DATA_READING;
1752 ret = SSL_read_ex(s, buf, num, readbytes);
1754 * State machine will update early_data_state to
1755 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1758 if (ret > 0 || (ret <= 0 && s->early_data_state
1759 != SSL_EARLY_DATA_FINISHED_READING)) {
1760 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1761 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1762 : SSL_READ_EARLY_DATA_ERROR;
1765 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1768 return SSL_READ_EARLY_DATA_FINISH;
1771 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1772 return SSL_READ_EARLY_DATA_ERROR;
1776 int SSL_get_early_data_status(const SSL *s)
1778 return s->ext.early_data;
1781 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1783 if (s->handshake_func == NULL) {
1784 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1788 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1791 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1792 struct ssl_async_args args;
1798 args.type = READFUNC;
1799 args.f.func_read = s->method->ssl_peek;
1801 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1802 *readbytes = s->asyncrw;
1805 return s->method->ssl_peek(s, buf, num, readbytes);
1809 int SSL_peek(SSL *s, void *buf, int num)
1815 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1819 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1822 * The cast is safe here because ret should be <= INT_MAX because num is
1826 ret = (int)readbytes;
1832 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1834 int ret = ssl_peek_internal(s, buf, num, readbytes);
1841 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1843 if (s->handshake_func == NULL) {
1844 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1848 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1849 s->rwstate = SSL_NOTHING;
1850 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1854 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1855 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1856 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1857 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1860 /* If we are a client and haven't sent the Finished we better do that */
1861 ossl_statem_check_finish_init(s, 1);
1863 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1865 struct ssl_async_args args;
1868 args.buf = (void *)buf;
1870 args.type = WRITEFUNC;
1871 args.f.func_write = s->method->ssl_write;
1873 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1874 *written = s->asyncrw;
1877 return s->method->ssl_write(s, buf, num, written);
1881 int SSL_write(SSL *s, const void *buf, int num)
1887 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1891 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1894 * The cast is safe here because ret should be <= INT_MAX because num is
1903 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1905 int ret = ssl_write_internal(s, buf, num, written);
1912 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1914 int ret, early_data_state;
1916 switch (s->early_data_state) {
1917 case SSL_EARLY_DATA_NONE:
1919 || !SSL_in_before(s)
1920 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1921 && (s->psk_use_session_cb == NULL))) {
1922 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1923 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1928 case SSL_EARLY_DATA_CONNECT_RETRY:
1929 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1930 ret = SSL_connect(s);
1933 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1938 case SSL_EARLY_DATA_WRITE_RETRY:
1939 s->early_data_state = SSL_EARLY_DATA_WRITING;
1940 ret = SSL_write_ex(s, buf, num, written);
1941 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1944 case SSL_EARLY_DATA_FINISHED_READING:
1945 case SSL_EARLY_DATA_READ_RETRY:
1946 early_data_state = s->early_data_state;
1947 /* We are a server writing to an unauthenticated client */
1948 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1949 ret = SSL_write_ex(s, buf, num, written);
1950 s->early_data_state = early_data_state;
1954 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1959 int SSL_shutdown(SSL *s)
1962 * Note that this function behaves differently from what one might
1963 * expect. Return values are 0 for no success (yet), 1 for success; but
1964 * calling it once is usually not enough, even if blocking I/O is used
1965 * (see ssl3_shutdown).
1968 if (s->handshake_func == NULL) {
1969 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1973 if (!SSL_in_init(s)) {
1974 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1975 struct ssl_async_args args;
1978 args.type = OTHERFUNC;
1979 args.f.func_other = s->method->ssl_shutdown;
1981 return ssl_start_async_job(s, &args, ssl_io_intern);
1983 return s->method->ssl_shutdown(s);
1986 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1991 int SSL_key_update(SSL *s, int updatetype)
1994 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1995 * negotiated, and that it is appropriate to call SSL_key_update() instead
1996 * of SSL_renegotiate().
1998 if (!SSL_IS_TLS13(s)) {
1999 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2003 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2004 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2005 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2009 if (!SSL_is_init_finished(s)) {
2010 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2014 ossl_statem_set_in_init(s, 1);
2015 s->key_update = updatetype;
2019 int SSL_get_key_update_type(SSL *s)
2021 return s->key_update;
2024 int SSL_renegotiate(SSL *s)
2026 if (SSL_IS_TLS13(s)) {
2027 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2031 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2032 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2039 return (s->method->ssl_renegotiate(s));
2042 int SSL_renegotiate_abbreviated(SSL *s)
2044 if (SSL_IS_TLS13(s)) {
2045 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2049 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2050 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2057 return (s->method->ssl_renegotiate(s));
2060 int SSL_renegotiate_pending(SSL *s)
2063 * becomes true when negotiation is requested; false again once a
2064 * handshake has finished
2066 return (s->renegotiate != 0);
2069 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2074 case SSL_CTRL_GET_READ_AHEAD:
2075 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2076 case SSL_CTRL_SET_READ_AHEAD:
2077 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2078 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2081 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2082 s->msg_callback_arg = parg;
2086 return (s->mode |= larg);
2087 case SSL_CTRL_CLEAR_MODE:
2088 return (s->mode &= ~larg);
2089 case SSL_CTRL_GET_MAX_CERT_LIST:
2090 return (long)(s->max_cert_list);
2091 case SSL_CTRL_SET_MAX_CERT_LIST:
2094 l = (long)s->max_cert_list;
2095 s->max_cert_list = (size_t)larg;
2097 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2098 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2100 s->max_send_fragment = larg;
2101 if (s->max_send_fragment < s->split_send_fragment)
2102 s->split_send_fragment = s->max_send_fragment;
2104 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2105 if ((size_t)larg > s->max_send_fragment || larg == 0)
2107 s->split_send_fragment = larg;
2109 case SSL_CTRL_SET_MAX_PIPELINES:
2110 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2112 s->max_pipelines = larg;
2114 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2116 case SSL_CTRL_GET_RI_SUPPORT:
2118 return s->s3->send_connection_binding;
2121 case SSL_CTRL_CERT_FLAGS:
2122 return (s->cert->cert_flags |= larg);
2123 case SSL_CTRL_CLEAR_CERT_FLAGS:
2124 return (s->cert->cert_flags &= ~larg);
2126 case SSL_CTRL_GET_RAW_CIPHERLIST:
2128 if (s->s3->tmp.ciphers_raw == NULL)
2130 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2131 return (int)s->s3->tmp.ciphers_rawlen;
2133 return TLS_CIPHER_LEN;
2135 case SSL_CTRL_GET_EXTMS_SUPPORT:
2136 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2138 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2142 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2143 return ssl_check_allowed_versions(larg, s->max_proto_version)
2144 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2145 &s->min_proto_version);
2146 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2147 return s->min_proto_version;
2148 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2149 return ssl_check_allowed_versions(s->min_proto_version, larg)
2150 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2151 &s->max_proto_version);
2152 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2153 return s->max_proto_version;
2155 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2159 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2162 case SSL_CTRL_SET_MSG_CALLBACK:
2163 s->msg_callback = (void (*)
2164 (int write_p, int version, int content_type,
2165 const void *buf, size_t len, SSL *ssl,
2170 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2174 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2176 return ctx->sessions;
2179 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2182 /* For some cases with ctx == NULL perform syntax checks */
2185 #ifndef OPENSSL_NO_EC
2186 case SSL_CTRL_SET_GROUPS_LIST:
2187 return tls1_set_groups_list(NULL, NULL, parg);
2189 case SSL_CTRL_SET_SIGALGS_LIST:
2190 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2191 return tls1_set_sigalgs_list(NULL, parg, 0);
2198 case SSL_CTRL_GET_READ_AHEAD:
2199 return (ctx->read_ahead);
2200 case SSL_CTRL_SET_READ_AHEAD:
2201 l = ctx->read_ahead;
2202 ctx->read_ahead = larg;
2205 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2206 ctx->msg_callback_arg = parg;
2209 case SSL_CTRL_GET_MAX_CERT_LIST:
2210 return (long)(ctx->max_cert_list);
2211 case SSL_CTRL_SET_MAX_CERT_LIST:
2214 l = (long)ctx->max_cert_list;
2215 ctx->max_cert_list = (size_t)larg;
2218 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2221 l = (long)ctx->session_cache_size;
2222 ctx->session_cache_size = (size_t)larg;
2224 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2225 return (long)(ctx->session_cache_size);
2226 case SSL_CTRL_SET_SESS_CACHE_MODE:
2227 l = ctx->session_cache_mode;
2228 ctx->session_cache_mode = larg;
2230 case SSL_CTRL_GET_SESS_CACHE_MODE:
2231 return (ctx->session_cache_mode);
2233 case SSL_CTRL_SESS_NUMBER:
2234 return (lh_SSL_SESSION_num_items(ctx->sessions));
2235 case SSL_CTRL_SESS_CONNECT:
2236 return (ctx->stats.sess_connect);
2237 case SSL_CTRL_SESS_CONNECT_GOOD:
2238 return (ctx->stats.sess_connect_good);
2239 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2240 return (ctx->stats.sess_connect_renegotiate);
2241 case SSL_CTRL_SESS_ACCEPT:
2242 return (ctx->stats.sess_accept);
2243 case SSL_CTRL_SESS_ACCEPT_GOOD:
2244 return (ctx->stats.sess_accept_good);
2245 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2246 return (ctx->stats.sess_accept_renegotiate);
2247 case SSL_CTRL_SESS_HIT:
2248 return (ctx->stats.sess_hit);
2249 case SSL_CTRL_SESS_CB_HIT:
2250 return (ctx->stats.sess_cb_hit);
2251 case SSL_CTRL_SESS_MISSES:
2252 return (ctx->stats.sess_miss);
2253 case SSL_CTRL_SESS_TIMEOUTS:
2254 return (ctx->stats.sess_timeout);
2255 case SSL_CTRL_SESS_CACHE_FULL:
2256 return (ctx->stats.sess_cache_full);
2258 return (ctx->mode |= larg);
2259 case SSL_CTRL_CLEAR_MODE:
2260 return (ctx->mode &= ~larg);
2261 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2262 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2264 ctx->max_send_fragment = larg;
2265 if (ctx->max_send_fragment < ctx->split_send_fragment)
2266 ctx->split_send_fragment = ctx->max_send_fragment;
2268 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2269 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2271 ctx->split_send_fragment = larg;
2273 case SSL_CTRL_SET_MAX_PIPELINES:
2274 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2276 ctx->max_pipelines = larg;
2278 case SSL_CTRL_CERT_FLAGS:
2279 return (ctx->cert->cert_flags |= larg);
2280 case SSL_CTRL_CLEAR_CERT_FLAGS:
2281 return (ctx->cert->cert_flags &= ~larg);
2282 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2283 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2284 && ssl_set_version_bound(ctx->method->version, (int)larg,
2285 &ctx->min_proto_version);
2286 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2287 return ctx->min_proto_version;
2288 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2289 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2290 && ssl_set_version_bound(ctx->method->version, (int)larg,
2291 &ctx->max_proto_version);
2292 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2293 return ctx->max_proto_version;
2295 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2299 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2302 case SSL_CTRL_SET_MSG_CALLBACK:
2303 ctx->msg_callback = (void (*)
2304 (int write_p, int version, int content_type,
2305 const void *buf, size_t len, SSL *ssl,
2310 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2314 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2323 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2324 const SSL_CIPHER *const *bp)
2326 if ((*ap)->id > (*bp)->id)
2328 if ((*ap)->id < (*bp)->id)
2333 /** return a STACK of the ciphers available for the SSL and in order of
2335 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2338 if (s->cipher_list != NULL) {
2339 return (s->cipher_list);
2340 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2341 return (s->ctx->cipher_list);
2347 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2349 if ((s == NULL) || (s->session == NULL) || !s->server)
2351 return s->session->ciphers;
2354 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2356 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2358 ciphers = SSL_get_ciphers(s);
2361 ssl_set_client_disabled(s);
2362 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2363 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2364 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2366 sk = sk_SSL_CIPHER_new_null();
2369 if (!sk_SSL_CIPHER_push(sk, c)) {
2370 sk_SSL_CIPHER_free(sk);
2378 /** return a STACK of the ciphers available for the SSL and in order of
2380 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2383 if (s->cipher_list_by_id != NULL) {
2384 return (s->cipher_list_by_id);
2385 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2386 return (s->ctx->cipher_list_by_id);
2392 /** The old interface to get the same thing as SSL_get_ciphers() */
2393 const char *SSL_get_cipher_list(const SSL *s, int n)
2395 const SSL_CIPHER *c;
2396 STACK_OF(SSL_CIPHER) *sk;
2400 sk = SSL_get_ciphers(s);
2401 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2403 c = sk_SSL_CIPHER_value(sk, n);
2409 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2411 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2414 return ctx->cipher_list;
2418 /** specify the ciphers to be used by default by the SSL_CTX */
2419 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2421 STACK_OF(SSL_CIPHER) *sk;
2423 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2424 &ctx->cipher_list_by_id, str, ctx->cert);
2426 * ssl_create_cipher_list may return an empty stack if it was unable to
2427 * find a cipher matching the given rule string (for example if the rule
2428 * string specifies a cipher which has been disabled). This is not an
2429 * error as far as ssl_create_cipher_list is concerned, and hence
2430 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2434 else if (sk_SSL_CIPHER_num(sk) == 0) {
2435 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2441 /** specify the ciphers to be used by the SSL */
2442 int SSL_set_cipher_list(SSL *s, const char *str)
2444 STACK_OF(SSL_CIPHER) *sk;
2446 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2447 &s->cipher_list_by_id, str, s->cert);
2448 /* see comment in SSL_CTX_set_cipher_list */
2451 else if (sk_SSL_CIPHER_num(sk) == 0) {
2452 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2458 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2461 STACK_OF(SSL_CIPHER) *sk;
2462 const SSL_CIPHER *c;
2465 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2469 sk = s->session->ciphers;
2471 if (sk_SSL_CIPHER_num(sk) == 0)
2474 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2477 c = sk_SSL_CIPHER_value(sk, i);
2478 n = strlen(c->name);
2494 /** return a servername extension value if provided in Client Hello, or NULL.
2495 * So far, only host_name types are defined (RFC 3546).
2498 const char *SSL_get_servername(const SSL *s, const int type)
2500 if (type != TLSEXT_NAMETYPE_host_name)
2503 return s->session && !s->ext.hostname ?
2504 s->session->ext.hostname : s->ext.hostname;
2507 int SSL_get_servername_type(const SSL *s)
2510 && (!s->ext.hostname ? s->session->
2511 ext.hostname : s->ext.hostname))
2512 return TLSEXT_NAMETYPE_host_name;
2517 * SSL_select_next_proto implements the standard protocol selection. It is
2518 * expected that this function is called from the callback set by
2519 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2520 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2521 * not included in the length. A byte string of length 0 is invalid. No byte
2522 * string may be truncated. The current, but experimental algorithm for
2523 * selecting the protocol is: 1) If the server doesn't support NPN then this
2524 * is indicated to the callback. In this case, the client application has to
2525 * abort the connection or have a default application level protocol. 2) If
2526 * the server supports NPN, but advertises an empty list then the client
2527 * selects the first protocol in its list, but indicates via the API that this
2528 * fallback case was enacted. 3) Otherwise, the client finds the first
2529 * protocol in the server's list that it supports and selects this protocol.
2530 * This is because it's assumed that the server has better information about
2531 * which protocol a client should use. 4) If the client doesn't support any
2532 * of the server's advertised protocols, then this is treated the same as
2533 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2534 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2536 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2537 const unsigned char *server,
2538 unsigned int server_len,
2539 const unsigned char *client, unsigned int client_len)
2542 const unsigned char *result;
2543 int status = OPENSSL_NPN_UNSUPPORTED;
2546 * For each protocol in server preference order, see if we support it.
2548 for (i = 0; i < server_len;) {
2549 for (j = 0; j < client_len;) {
2550 if (server[i] == client[j] &&
2551 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2552 /* We found a match */
2553 result = &server[i];
2554 status = OPENSSL_NPN_NEGOTIATED;
2564 /* There's no overlap between our protocols and the server's list. */
2566 status = OPENSSL_NPN_NO_OVERLAP;
2569 *out = (unsigned char *)result + 1;
2570 *outlen = result[0];
2574 #ifndef OPENSSL_NO_NEXTPROTONEG
2576 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2577 * client's requested protocol for this connection and returns 0. If the
2578 * client didn't request any protocol, then *data is set to NULL. Note that
2579 * the client can request any protocol it chooses. The value returned from
2580 * this function need not be a member of the list of supported protocols
2581 * provided by the callback.
2583 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2590 *len = (unsigned int)s->ext.npn_len;
2595 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2596 * a TLS server needs a list of supported protocols for Next Protocol
2597 * Negotiation. The returned list must be in wire format. The list is
2598 * returned by setting |out| to point to it and |outlen| to its length. This
2599 * memory will not be modified, but one should assume that the SSL* keeps a
2600 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2601 * wishes to advertise. Otherwise, no such extension will be included in the
2604 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2605 SSL_CTX_npn_advertised_cb_func cb,
2608 ctx->ext.npn_advertised_cb = cb;
2609 ctx->ext.npn_advertised_cb_arg = arg;
2613 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2614 * client needs to select a protocol from the server's provided list. |out|
2615 * must be set to point to the selected protocol (which may be within |in|).
2616 * The length of the protocol name must be written into |outlen|. The
2617 * server's advertised protocols are provided in |in| and |inlen|. The
2618 * callback can assume that |in| is syntactically valid. The client must
2619 * select a protocol. It is fatal to the connection if this callback returns
2620 * a value other than SSL_TLSEXT_ERR_OK.
2622 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2623 SSL_CTX_npn_select_cb_func cb,
2626 ctx->ext.npn_select_cb = cb;
2627 ctx->ext.npn_select_cb_arg = arg;
2632 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2633 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2634 * length-prefixed strings). Returns 0 on success.
2636 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2637 unsigned int protos_len)
2639 OPENSSL_free(ctx->ext.alpn);
2640 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2641 if (ctx->ext.alpn == NULL) {
2642 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2645 ctx->ext.alpn_len = protos_len;
2651 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2652 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2653 * length-prefixed strings). Returns 0 on success.
2655 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2656 unsigned int protos_len)
2658 OPENSSL_free(ssl->ext.alpn);
2659 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2660 if (ssl->ext.alpn == NULL) {
2661 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2664 ssl->ext.alpn_len = protos_len;
2670 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2671 * called during ClientHello processing in order to select an ALPN protocol
2672 * from the client's list of offered protocols.
2674 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2675 SSL_CTX_alpn_select_cb_func cb,
2678 ctx->ext.alpn_select_cb = cb;
2679 ctx->ext.alpn_select_cb_arg = arg;
2683 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2684 * On return it sets |*data| to point to |*len| bytes of protocol name
2685 * (not including the leading length-prefix byte). If the server didn't
2686 * respond with a negotiated protocol then |*len| will be zero.
2688 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2693 *data = ssl->s3->alpn_selected;
2697 *len = (unsigned int)ssl->s3->alpn_selected_len;
2700 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2701 const char *label, size_t llen,
2702 const unsigned char *context, size_t contextlen,
2705 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2708 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2710 contextlen, use_context);
2713 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2715 const unsigned char *session_id = a->session_id;
2717 unsigned char tmp_storage[4];
2719 if (a->session_id_length < sizeof(tmp_storage)) {
2720 memset(tmp_storage, 0, sizeof(tmp_storage));
2721 memcpy(tmp_storage, a->session_id, a->session_id_length);
2722 session_id = tmp_storage;
2726 ((unsigned long)session_id[0]) |
2727 ((unsigned long)session_id[1] << 8L) |
2728 ((unsigned long)session_id[2] << 16L) |
2729 ((unsigned long)session_id[3] << 24L);
2734 * NB: If this function (or indeed the hash function which uses a sort of
2735 * coarser function than this one) is changed, ensure
2736 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2737 * being able to construct an SSL_SESSION that will collide with any existing
2738 * session with a matching session ID.
2740 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2742 if (a->ssl_version != b->ssl_version)
2744 if (a->session_id_length != b->session_id_length)
2746 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2750 * These wrapper functions should remain rather than redeclaring
2751 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2752 * variable. The reason is that the functions aren't static, they're exposed
2756 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2758 SSL_CTX *ret = NULL;
2761 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2765 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2768 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2769 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2772 ret = OPENSSL_zalloc(sizeof(*ret));
2777 ret->min_proto_version = 0;
2778 ret->max_proto_version = 0;
2779 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2780 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2781 /* We take the system default. */
2782 ret->session_timeout = meth->get_timeout();
2783 ret->references = 1;
2784 ret->lock = CRYPTO_THREAD_lock_new();
2785 if (ret->lock == NULL) {
2786 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2790 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2791 ret->verify_mode = SSL_VERIFY_NONE;
2792 if ((ret->cert = ssl_cert_new()) == NULL)
2795 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2796 if (ret->sessions == NULL)
2798 ret->cert_store = X509_STORE_new();
2799 if (ret->cert_store == NULL)
2801 #ifndef OPENSSL_NO_CT
2802 ret->ctlog_store = CTLOG_STORE_new();
2803 if (ret->ctlog_store == NULL)
2806 if (!ssl_create_cipher_list(ret->method,
2807 &ret->cipher_list, &ret->cipher_list_by_id,
2808 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2809 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2810 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2814 ret->param = X509_VERIFY_PARAM_new();
2815 if (ret->param == NULL)
2818 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2819 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2822 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2823 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2827 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2830 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2833 /* No compression for DTLS */
2834 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2835 ret->comp_methods = SSL_COMP_get_compression_methods();
2837 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2838 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2840 /* Setup RFC5077 ticket keys */
2841 if ((RAND_bytes(ret->ext.tick_key_name,
2842 sizeof(ret->ext.tick_key_name)) <= 0)
2843 || (RAND_bytes(ret->ext.tick_hmac_key,
2844 sizeof(ret->ext.tick_hmac_key)) <= 0)
2845 || (RAND_bytes(ret->ext.tick_aes_key,
2846 sizeof(ret->ext.tick_aes_key)) <= 0))
2847 ret->options |= SSL_OP_NO_TICKET;
2849 #ifndef OPENSSL_NO_SRP
2850 if (!SSL_CTX_SRP_CTX_init(ret))
2853 #ifndef OPENSSL_NO_ENGINE
2854 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2855 # define eng_strx(x) #x
2856 # define eng_str(x) eng_strx(x)
2857 /* Use specific client engine automatically... ignore errors */
2860 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2863 ENGINE_load_builtin_engines();
2864 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2866 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2872 * Default is to connect to non-RI servers. When RI is more widely
2873 * deployed might change this.
2875 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2877 * Disable compression by default to prevent CRIME. Applications can
2878 * re-enable compression by configuring
2879 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2880 * or by using the SSL_CONF library.
2882 ret->options |= SSL_OP_NO_COMPRESSION;
2884 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2887 * Default max early data is a fully loaded single record. Could be split
2888 * across multiple records in practice
2890 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2894 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2900 int SSL_CTX_up_ref(SSL_CTX *ctx)
2904 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2907 REF_PRINT_COUNT("SSL_CTX", ctx);
2908 REF_ASSERT_ISNT(i < 2);
2909 return ((i > 1) ? 1 : 0);
2912 void SSL_CTX_free(SSL_CTX *a)
2919 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2920 REF_PRINT_COUNT("SSL_CTX", a);
2923 REF_ASSERT_ISNT(i < 0);
2925 X509_VERIFY_PARAM_free(a->param);
2926 dane_ctx_final(&a->dane);
2929 * Free internal session cache. However: the remove_cb() may reference
2930 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2931 * after the sessions were flushed.
2932 * As the ex_data handling routines might also touch the session cache,
2933 * the most secure solution seems to be: empty (flush) the cache, then
2934 * free ex_data, then finally free the cache.
2935 * (See ticket [openssl.org #212].)
2937 if (a->sessions != NULL)
2938 SSL_CTX_flush_sessions(a, 0);
2940 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2941 lh_SSL_SESSION_free(a->sessions);
2942 X509_STORE_free(a->cert_store);
2943 #ifndef OPENSSL_NO_CT
2944 CTLOG_STORE_free(a->ctlog_store);
2946 sk_SSL_CIPHER_free(a->cipher_list);
2947 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2948 ssl_cert_free(a->cert);
2949 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2950 sk_X509_pop_free(a->extra_certs, X509_free);
2951 a->comp_methods = NULL;
2952 #ifndef OPENSSL_NO_SRTP
2953 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2955 #ifndef OPENSSL_NO_SRP
2956 SSL_CTX_SRP_CTX_free(a);
2958 #ifndef OPENSSL_NO_ENGINE
2959 ENGINE_finish(a->client_cert_engine);
2962 #ifndef OPENSSL_NO_EC
2963 OPENSSL_free(a->ext.ecpointformats);
2964 OPENSSL_free(a->ext.supportedgroups);
2966 OPENSSL_free(a->ext.alpn);
2968 CRYPTO_THREAD_lock_free(a->lock);
2973 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2975 ctx->default_passwd_callback = cb;
2978 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2980 ctx->default_passwd_callback_userdata = u;
2983 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2985 return ctx->default_passwd_callback;
2988 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2990 return ctx->default_passwd_callback_userdata;
2993 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2995 s->default_passwd_callback = cb;
2998 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3000 s->default_passwd_callback_userdata = u;
3003 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3005 return s->default_passwd_callback;
3008 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3010 return s->default_passwd_callback_userdata;
3013 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3014 int (*cb) (X509_STORE_CTX *, void *),
3017 ctx->app_verify_callback = cb;
3018 ctx->app_verify_arg = arg;
3021 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3022 int (*cb) (int, X509_STORE_CTX *))
3024 ctx->verify_mode = mode;
3025 ctx->default_verify_callback = cb;
3028 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3030 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3033 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3035 ssl_cert_set_cert_cb(c->cert, cb, arg);
3038 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3040 ssl_cert_set_cert_cb(s->cert, cb, arg);
3043 void ssl_set_masks(SSL *s)
3046 uint32_t *pvalid = s->s3->tmp.valid_flags;
3047 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3048 unsigned long mask_k, mask_a;
3049 #ifndef OPENSSL_NO_EC
3050 int have_ecc_cert, ecdsa_ok;
3055 #ifndef OPENSSL_NO_DH
3056 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3061 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3062 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3063 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3064 #ifndef OPENSSL_NO_EC
3065 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3071 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3072 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3075 #ifndef OPENSSL_NO_GOST
3076 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3077 mask_k |= SSL_kGOST;
3078 mask_a |= SSL_aGOST12;
3080 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3081 mask_k |= SSL_kGOST;
3082 mask_a |= SSL_aGOST12;
3084 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3085 mask_k |= SSL_kGOST;
3086 mask_a |= SSL_aGOST01;
3097 * If we only have an RSA-PSS certificate allow RSA authentication
3098 * if TLS 1.2 and peer supports it.
3101 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3102 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3103 && TLS1_get_version(s) == TLS1_2_VERSION))
3110 mask_a |= SSL_aNULL;
3113 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3114 * depending on the key usage extension.
3116 #ifndef OPENSSL_NO_EC
3117 if (have_ecc_cert) {
3119 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3120 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3121 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3124 mask_a |= SSL_aECDSA;
3126 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3127 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3128 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3129 && TLS1_get_version(s) == TLS1_2_VERSION)
3130 mask_a |= SSL_aECDSA;
3133 #ifndef OPENSSL_NO_EC
3134 mask_k |= SSL_kECDHE;
3137 #ifndef OPENSSL_NO_PSK
3140 if (mask_k & SSL_kRSA)
3141 mask_k |= SSL_kRSAPSK;
3142 if (mask_k & SSL_kDHE)
3143 mask_k |= SSL_kDHEPSK;
3144 if (mask_k & SSL_kECDHE)
3145 mask_k |= SSL_kECDHEPSK;
3148 s->s3->tmp.mask_k = mask_k;
3149 s->s3->tmp.mask_a = mask_a;
3152 #ifndef OPENSSL_NO_EC
3154 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3156 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3157 /* key usage, if present, must allow signing */
3158 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3159 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3160 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3164 return 1; /* all checks are ok */
3169 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3170 size_t *serverinfo_length)
3172 CERT_PKEY *cpk = s->s3->tmp.cert;
3173 *serverinfo_length = 0;
3175 if (cpk == NULL || cpk->serverinfo == NULL)
3178 *serverinfo = cpk->serverinfo;
3179 *serverinfo_length = cpk->serverinfo_length;
3183 void ssl_update_cache(SSL *s, int mode)
3188 * If the session_id_length is 0, we are not supposed to cache it, and it
3189 * would be rather hard to do anyway :-)
3191 if (s->session->session_id_length == 0)
3194 i = s->session_ctx->session_cache_mode;
3196 && (!s->hit || SSL_IS_TLS13(s))
3197 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
3198 || SSL_CTX_add_session(s->session_ctx, s->session))
3199 && s->session_ctx->new_session_cb != NULL) {
3200 SSL_SESSION_up_ref(s->session);
3201 if (!s->session_ctx->new_session_cb(s, s->session))
3202 SSL_SESSION_free(s->session);
3205 /* auto flush every 255 connections */
3206 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3207 if ((((mode & SSL_SESS_CACHE_CLIENT)
3208 ? s->session_ctx->stats.sess_connect_good
3209 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3210 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3215 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3220 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3225 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3229 if (s->method != meth) {
3230 const SSL_METHOD *sm = s->method;
3231 int (*hf) (SSL *) = s->handshake_func;
3233 if (sm->version == meth->version)
3238 ret = s->method->ssl_new(s);
3241 if (hf == sm->ssl_connect)
3242 s->handshake_func = meth->ssl_connect;
3243 else if (hf == sm->ssl_accept)
3244 s->handshake_func = meth->ssl_accept;
3249 int SSL_get_error(const SSL *s, int i)
3256 return (SSL_ERROR_NONE);
3259 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3260 * where we do encode the error
3262 if ((l = ERR_peek_error()) != 0) {
3263 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3264 return (SSL_ERROR_SYSCALL);
3266 return (SSL_ERROR_SSL);
3269 if (SSL_want_read(s)) {
3270 bio = SSL_get_rbio(s);
3271 if (BIO_should_read(bio))
3272 return (SSL_ERROR_WANT_READ);
3273 else if (BIO_should_write(bio))
3275 * This one doesn't make too much sense ... We never try to write
3276 * to the rbio, and an application program where rbio and wbio
3277 * are separate couldn't even know what it should wait for.
3278 * However if we ever set s->rwstate incorrectly (so that we have
3279 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3280 * wbio *are* the same, this test works around that bug; so it
3281 * might be safer to keep it.
3283 return (SSL_ERROR_WANT_WRITE);
3284 else if (BIO_should_io_special(bio)) {
3285 reason = BIO_get_retry_reason(bio);
3286 if (reason == BIO_RR_CONNECT)
3287 return (SSL_ERROR_WANT_CONNECT);
3288 else if (reason == BIO_RR_ACCEPT)
3289 return (SSL_ERROR_WANT_ACCEPT);
3291 return (SSL_ERROR_SYSCALL); /* unknown */
3295 if (SSL_want_write(s)) {
3296 /* Access wbio directly - in order to use the buffered bio if present */
3298 if (BIO_should_write(bio))
3299 return (SSL_ERROR_WANT_WRITE);
3300 else if (BIO_should_read(bio))
3302 * See above (SSL_want_read(s) with BIO_should_write(bio))
3304 return (SSL_ERROR_WANT_READ);
3305 else if (BIO_should_io_special(bio)) {
3306 reason = BIO_get_retry_reason(bio);
3307 if (reason == BIO_RR_CONNECT)
3308 return (SSL_ERROR_WANT_CONNECT);
3309 else if (reason == BIO_RR_ACCEPT)
3310 return (SSL_ERROR_WANT_ACCEPT);
3312 return (SSL_ERROR_SYSCALL);
3315 if (SSL_want_x509_lookup(s))
3316 return (SSL_ERROR_WANT_X509_LOOKUP);
3317 if (SSL_want_async(s))
3318 return SSL_ERROR_WANT_ASYNC;
3319 if (SSL_want_async_job(s))
3320 return SSL_ERROR_WANT_ASYNC_JOB;
3321 if (SSL_want_client_hello_cb(s))
3322 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3324 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3325 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3326 return (SSL_ERROR_ZERO_RETURN);
3328 return (SSL_ERROR_SYSCALL);
3331 static int ssl_do_handshake_intern(void *vargs)
3333 struct ssl_async_args *args;
3336 args = (struct ssl_async_args *)vargs;
3339 return s->handshake_func(s);
3342 int SSL_do_handshake(SSL *s)
3346 if (s->handshake_func == NULL) {
3347 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3351 ossl_statem_check_finish_init(s, -1);
3353 s->method->ssl_renegotiate_check(s, 0);
3355 if (SSL_is_server(s)) {
3356 /* clear SNI settings at server-side */
3357 OPENSSL_free(s->ext.hostname);
3358 s->ext.hostname = NULL;
3361 if (SSL_in_init(s) || SSL_in_before(s)) {
3362 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3363 struct ssl_async_args args;
3367 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3369 ret = s->handshake_func(s);
3375 void SSL_set_accept_state(SSL *s)
3379 ossl_statem_clear(s);
3380 s->handshake_func = s->method->ssl_accept;
3384 void SSL_set_connect_state(SSL *s)
3388 ossl_statem_clear(s);
3389 s->handshake_func = s->method->ssl_connect;
3393 int ssl_undefined_function(SSL *s)
3395 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3399 int ssl_undefined_void_function(void)
3401 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3402 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3406 int ssl_undefined_const_function(const SSL *s)
3411 const SSL_METHOD *ssl_bad_method(int ver)
3413 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3417 const char *ssl_protocol_to_string(int version)
3421 case TLS1_3_VERSION:
3424 case TLS1_2_VERSION:
3427 case TLS1_1_VERSION:
3442 case DTLS1_2_VERSION:
3450 const char *SSL_get_version(const SSL *s)
3452 return ssl_protocol_to_string(s->version);
3455 SSL *SSL_dup(SSL *s)
3457 STACK_OF(X509_NAME) *sk;
3462 /* If we're not quiescent, just up_ref! */
3463 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3464 CRYPTO_UP_REF(&s->references, &i, s->lock);
3469 * Otherwise, copy configuration state, and session if set.
3471 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3474 if (s->session != NULL) {
3476 * Arranges to share the same session via up_ref. This "copies"
3477 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3479 if (!SSL_copy_session_id(ret, s))
3483 * No session has been established yet, so we have to expect that
3484 * s->cert or ret->cert will be changed later -- they should not both
3485 * point to the same object, and thus we can't use
3486 * SSL_copy_session_id.
3488 if (!SSL_set_ssl_method(ret, s->method))
3491 if (s->cert != NULL) {
3492 ssl_cert_free(ret->cert);
3493 ret->cert = ssl_cert_dup(s->cert);
3494 if (ret->cert == NULL)
3498 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3499 (int)s->sid_ctx_length))
3503 if (!ssl_dane_dup(ret, s))
3505 ret->version = s->version;
3506 ret->options = s->options;
3507 ret->mode = s->mode;
3508 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3509 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3510 ret->msg_callback = s->msg_callback;
3511 ret->msg_callback_arg = s->msg_callback_arg;
3512 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3513 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3514 ret->generate_session_id = s->generate_session_id;
3516 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3518 /* copy app data, a little dangerous perhaps */
3519 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3522 /* setup rbio, and wbio */
3523 if (s->rbio != NULL) {
3524 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3527 if (s->wbio != NULL) {
3528 if (s->wbio != s->rbio) {
3529 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3532 BIO_up_ref(ret->rbio);
3533 ret->wbio = ret->rbio;
3537 ret->server = s->server;
3538 if (s->handshake_func) {
3540 SSL_set_accept_state(ret);
3542 SSL_set_connect_state(ret);
3544 ret->shutdown = s->shutdown;
3547 ret->default_passwd_callback = s->default_passwd_callback;
3548 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3550 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3552 /* dup the cipher_list and cipher_list_by_id stacks */
3553 if (s->cipher_list != NULL) {
3554 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3557 if (s->cipher_list_by_id != NULL)
3558 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3562 /* Dup the client_CA list */
3563 if (s->ca_names != NULL) {
3564 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3567 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3568 xn = sk_X509_NAME_value(sk, i);
3569 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3582 void ssl_clear_cipher_ctx(SSL *s)
3584 if (s->enc_read_ctx != NULL) {
3585 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3586 s->enc_read_ctx = NULL;
3588 if (s->enc_write_ctx != NULL) {
3589 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3590 s->enc_write_ctx = NULL;
3592 #ifndef OPENSSL_NO_COMP
3593 COMP_CTX_free(s->expand);
3595 COMP_CTX_free(s->compress);
3600 X509 *SSL_get_certificate(const SSL *s)
3602 if (s->cert != NULL)
3603 return (s->cert->key->x509);
3608 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3610 if (s->cert != NULL)
3611 return (s->cert->key->privatekey);
3616 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3618 if (ctx->cert != NULL)
3619 return ctx->cert->key->x509;
3624 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3626 if (ctx->cert != NULL)
3627 return ctx->cert->key->privatekey;
3632 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3634 if ((s->session != NULL) && (s->session->cipher != NULL))
3635 return (s->session->cipher);
3639 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3641 return s->s3->tmp.new_cipher;
3644 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3646 #ifndef OPENSSL_NO_COMP
3647 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3653 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3655 #ifndef OPENSSL_NO_COMP
3656 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3662 int ssl_init_wbio_buffer(SSL *s)
3666 if (s->bbio != NULL) {
3667 /* Already buffered. */
3671 bbio = BIO_new(BIO_f_buffer());
3672 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3674 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3678 s->wbio = BIO_push(bbio, s->wbio);
3683 int ssl_free_wbio_buffer(SSL *s)
3685 /* callers ensure s is never null */
3686 if (s->bbio == NULL)
3689 s->wbio = BIO_pop(s->wbio);
3690 if (!ossl_assert(s->wbio != NULL))
3698 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3700 ctx->quiet_shutdown = mode;
3703 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3705 return (ctx->quiet_shutdown);
3708 void SSL_set_quiet_shutdown(SSL *s, int mode)
3710 s->quiet_shutdown = mode;
3713 int SSL_get_quiet_shutdown(const SSL *s)
3715 return (s->quiet_shutdown);
3718 void SSL_set_shutdown(SSL *s, int mode)
3723 int SSL_get_shutdown(const SSL *s)
3728 int SSL_version(const SSL *s)
3733 int SSL_client_version(const SSL *s)
3735 return s->client_version;
3738 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3743 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3746 if (ssl->ctx == ctx)
3749 ctx = ssl->session_ctx;
3750 new_cert = ssl_cert_dup(ctx->cert);
3751 if (new_cert == NULL) {
3755 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3756 ssl_cert_free(new_cert);
3760 ssl_cert_free(ssl->cert);
3761 ssl->cert = new_cert;
3764 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3765 * so setter APIs must prevent invalid lengths from entering the system.
3767 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3771 * If the session ID context matches that of the parent SSL_CTX,
3772 * inherit it from the new SSL_CTX as well. If however the context does
3773 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3774 * leave it unchanged.
3776 if ((ssl->ctx != NULL) &&
3777 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3778 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3779 ssl->sid_ctx_length = ctx->sid_ctx_length;
3780 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3783 SSL_CTX_up_ref(ctx);
3784 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3790 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3792 return (X509_STORE_set_default_paths(ctx->cert_store));
3795 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3797 X509_LOOKUP *lookup;
3799 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3802 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3804 /* Clear any errors if the default directory does not exist */
3810 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3812 X509_LOOKUP *lookup;
3814 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3818 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3820 /* Clear any errors if the default file does not exist */
3826 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3829 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3832 void SSL_set_info_callback(SSL *ssl,
3833 void (*cb) (const SSL *ssl, int type, int val))
3835 ssl->info_callback = cb;
3839 * One compiler (Diab DCC) doesn't like argument names in returned function
3842 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3845 return ssl->info_callback;
3848 void SSL_set_verify_result(SSL *ssl, long arg)
3850 ssl->verify_result = arg;
3853 long SSL_get_verify_result(const SSL *ssl)
3855 return (ssl->verify_result);
3858 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3861 return sizeof(ssl->s3->client_random);
3862 if (outlen > sizeof(ssl->s3->client_random))
3863 outlen = sizeof(ssl->s3->client_random);
3864 memcpy(out, ssl->s3->client_random, outlen);
3868 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3871 return sizeof(ssl->s3->server_random);
3872 if (outlen > sizeof(ssl->s3->server_random))
3873 outlen = sizeof(ssl->s3->server_random);
3874 memcpy(out, ssl->s3->server_random, outlen);
3878 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3879 unsigned char *out, size_t outlen)
3882 return session->master_key_length;
3883 if (outlen > session->master_key_length)
3884 outlen = session->master_key_length;
3885 memcpy(out, session->master_key, outlen);
3889 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3892 if (len > sizeof(sess->master_key))
3895 memcpy(sess->master_key, in, len);
3896 sess->master_key_length = len;
3901 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3903 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3906 void *SSL_get_ex_data(const SSL *s, int idx)
3908 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3911 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3913 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3916 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3918 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3921 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3923 return (ctx->cert_store);
3926 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3928 X509_STORE_free(ctx->cert_store);
3929 ctx->cert_store = store;
3932 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3935 X509_STORE_up_ref(store);
3936 SSL_CTX_set_cert_store(ctx, store);
3939 int SSL_want(const SSL *s)
3941 return (s->rwstate);
3945 * \brief Set the callback for generating temporary DH keys.
3946 * \param ctx the SSL context.
3947 * \param dh the callback
3950 #ifndef OPENSSL_NO_DH
3951 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3952 DH *(*dh) (SSL *ssl, int is_export,
3955 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3958 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3961 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3965 #ifndef OPENSSL_NO_PSK
3966 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3968 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3969 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3972 OPENSSL_free(ctx->cert->psk_identity_hint);
3973 if (identity_hint != NULL) {
3974 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3975 if (ctx->cert->psk_identity_hint == NULL)
3978 ctx->cert->psk_identity_hint = NULL;
3982 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3987 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3988 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3991 OPENSSL_free(s->cert->psk_identity_hint);
3992 if (identity_hint != NULL) {
3993 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3994 if (s->cert->psk_identity_hint == NULL)
3997 s->cert->psk_identity_hint = NULL;
4001 const char *SSL_get_psk_identity_hint(const SSL *s)
4003 if (s == NULL || s->session == NULL)
4005 return (s->session->psk_identity_hint);
4008 const char *SSL_get_psk_identity(const SSL *s)
4010 if (s == NULL || s->session == NULL)
4012 return (s->session->psk_identity);
4015 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4017 s->psk_client_callback = cb;
4020 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4022 ctx->psk_client_callback = cb;
4025 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4027 s->psk_server_callback = cb;
4030 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4032 ctx->psk_server_callback = cb;
4036 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4038 s->psk_find_session_cb = cb;
4041 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4042 SSL_psk_find_session_cb_func cb)
4044 ctx->psk_find_session_cb = cb;
4047 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4049 s->psk_use_session_cb = cb;
4052 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4053 SSL_psk_use_session_cb_func cb)
4055 ctx->psk_use_session_cb = cb;
4058 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4059 void (*cb) (int write_p, int version,
4060 int content_type, const void *buf,
4061 size_t len, SSL *ssl, void *arg))
4063 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4066 void SSL_set_msg_callback(SSL *ssl,
4067 void (*cb) (int write_p, int version,
4068 int content_type, const void *buf,
4069 size_t len, SSL *ssl, void *arg))
4071 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4074 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4075 int (*cb) (SSL *ssl,
4079 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4080 (void (*)(void))cb);
4083 void SSL_set_not_resumable_session_callback(SSL *ssl,
4084 int (*cb) (SSL *ssl,
4085 int is_forward_secure))
4087 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4088 (void (*)(void))cb);
4091 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4092 size_t (*cb) (SSL *ssl, int type,
4093 size_t len, void *arg))
4095 ctx->record_padding_cb = cb;
4098 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4100 ctx->record_padding_arg = arg;
4103 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4105 return ctx->record_padding_arg;
4108 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4110 /* block size of 0 or 1 is basically no padding */
4111 if (block_size == 1)
4112 ctx->block_padding = 0;
4113 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4114 ctx->block_padding = block_size;
4120 void SSL_set_record_padding_callback(SSL *ssl,
4121 size_t (*cb) (SSL *ssl, int type,
4122 size_t len, void *arg))
4124 ssl->record_padding_cb = cb;
4127 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4129 ssl->record_padding_arg = arg;
4132 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4134 return ssl->record_padding_arg;
4137 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4139 /* block size of 0 or 1 is basically no padding */
4140 if (block_size == 1)
4141 ssl->block_padding = 0;
4142 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4143 ssl->block_padding = block_size;
4150 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4151 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4152 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4153 * Returns the newly allocated ctx;
4156 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4158 ssl_clear_hash_ctx(hash);
4159 *hash = EVP_MD_CTX_new();
4160 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4161 EVP_MD_CTX_free(*hash);
4168 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4171 EVP_MD_CTX_free(*hash);
4175 /* Retrieve handshake hashes */
4176 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4179 EVP_MD_CTX *ctx = NULL;
4180 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4181 int hashleni = EVP_MD_CTX_size(hdgst);
4184 if (hashleni < 0 || (size_t)hashleni > outlen)
4187 ctx = EVP_MD_CTX_new();
4191 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4192 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4195 *hashlen = hashleni;
4199 EVP_MD_CTX_free(ctx);
4203 int SSL_session_reused(SSL *s)
4208 int SSL_is_server(const SSL *s)
4213 #if OPENSSL_API_COMPAT < 0x10100000L
4214 void SSL_set_debug(SSL *s, int debug)
4216 /* Old function was do-nothing anyway... */
4222 void SSL_set_security_level(SSL *s, int level)
4224 s->cert->sec_level = level;
4227 int SSL_get_security_level(const SSL *s)
4229 return s->cert->sec_level;
4232 void SSL_set_security_callback(SSL *s,
4233 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4234 int op, int bits, int nid,
4235 void *other, void *ex))
4237 s->cert->sec_cb = cb;
4240 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4241 const SSL_CTX *ctx, int op,
4242 int bits, int nid, void *other,
4244 return s->cert->sec_cb;
4247 void SSL_set0_security_ex_data(SSL *s, void *ex)
4249 s->cert->sec_ex = ex;
4252 void *SSL_get0_security_ex_data(const SSL *s)
4254 return s->cert->sec_ex;
4257 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4259 ctx->cert->sec_level = level;
4262 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4264 return ctx->cert->sec_level;
4267 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4268 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4269 int op, int bits, int nid,
4270 void *other, void *ex))
4272 ctx->cert->sec_cb = cb;
4275 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4281 return ctx->cert->sec_cb;
4284 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4286 ctx->cert->sec_ex = ex;
4289 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4291 return ctx->cert->sec_ex;
4295 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4296 * can return unsigned long, instead of the generic long return value from the
4297 * control interface.
4299 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4301 return ctx->options;
4304 unsigned long SSL_get_options(const SSL *s)
4309 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4311 return ctx->options |= op;
4314 unsigned long SSL_set_options(SSL *s, unsigned long op)
4316 return s->options |= op;
4319 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4321 return ctx->options &= ~op;
4324 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4326 return s->options &= ~op;
4329 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4331 return s->verified_chain;
4334 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4336 #ifndef OPENSSL_NO_CT
4339 * Moves SCTs from the |src| stack to the |dst| stack.
4340 * The source of each SCT will be set to |origin|.
4341 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4343 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4345 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4346 sct_source_t origin)
4352 *dst = sk_SCT_new_null();
4354 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4359 while ((sct = sk_SCT_pop(src)) != NULL) {
4360 if (SCT_set_source(sct, origin) != 1)
4363 if (sk_SCT_push(*dst, sct) <= 0)
4371 sk_SCT_push(src, sct); /* Put the SCT back */
4376 * Look for data collected during ServerHello and parse if found.
4377 * Returns the number of SCTs extracted.
4379 static int ct_extract_tls_extension_scts(SSL *s)
4381 int scts_extracted = 0;
4383 if (s->ext.scts != NULL) {
4384 const unsigned char *p = s->ext.scts;
4385 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4387 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4389 SCT_LIST_free(scts);
4392 return scts_extracted;
4396 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4397 * contains an SCT X509 extension. They will be stored in |s->scts|.
4399 * - The number of SCTs extracted, assuming an OCSP response exists.
4400 * - 0 if no OCSP response exists or it contains no SCTs.
4401 * - A negative integer if an error occurs.
4403 static int ct_extract_ocsp_response_scts(SSL *s)
4405 # ifndef OPENSSL_NO_OCSP
4406 int scts_extracted = 0;
4407 const unsigned char *p;
4408 OCSP_BASICRESP *br = NULL;
4409 OCSP_RESPONSE *rsp = NULL;
4410 STACK_OF(SCT) *scts = NULL;
4413 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4416 p = s->ext.ocsp.resp;
4417 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4421 br = OCSP_response_get1_basic(rsp);
4425 for (i = 0; i < OCSP_resp_count(br); ++i) {
4426 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4432 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4434 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4435 if (scts_extracted < 0)
4439 SCT_LIST_free(scts);
4440 OCSP_BASICRESP_free(br);
4441 OCSP_RESPONSE_free(rsp);
4442 return scts_extracted;
4444 /* Behave as if no OCSP response exists */
4450 * Attempts to extract SCTs from the peer certificate.
4451 * Return the number of SCTs extracted, or a negative integer if an error
4454 static int ct_extract_x509v3_extension_scts(SSL *s)
4456 int scts_extracted = 0;
4457 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4460 STACK_OF(SCT) *scts =
4461 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4464 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4466 SCT_LIST_free(scts);
4469 return scts_extracted;
4473 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4474 * response (if it exists) and X509v3 extensions in the certificate.
4475 * Returns NULL if an error occurs.
4477 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4479 if (!s->scts_parsed) {
4480 if (ct_extract_tls_extension_scts(s) < 0 ||
4481 ct_extract_ocsp_response_scts(s) < 0 ||
4482 ct_extract_x509v3_extension_scts(s) < 0)
4492 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4493 const STACK_OF(SCT) *scts, void *unused_arg)
4498 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4499 const STACK_OF(SCT) *scts, void *unused_arg)
4501 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4504 for (i = 0; i < count; ++i) {
4505 SCT *sct = sk_SCT_value(scts, i);
4506 int status = SCT_get_validation_status(sct);
4508 if (status == SCT_VALIDATION_STATUS_VALID)
4511 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4515 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4519 * Since code exists that uses the custom extension handler for CT, look
4520 * for this and throw an error if they have already registered to use CT.
4522 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4523 TLSEXT_TYPE_signed_certificate_timestamp))
4525 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4526 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4530 if (callback != NULL) {
4532 * If we are validating CT, then we MUST accept SCTs served via OCSP
4534 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4538 s->ct_validation_callback = callback;
4539 s->ct_validation_callback_arg = arg;
4544 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4545 ssl_ct_validation_cb callback, void *arg)
4548 * Since code exists that uses the custom extension handler for CT, look for
4549 * this and throw an error if they have already registered to use CT.
4551 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4552 TLSEXT_TYPE_signed_certificate_timestamp))
4554 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4555 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4559 ctx->ct_validation_callback = callback;
4560 ctx->ct_validation_callback_arg = arg;
4564 int SSL_ct_is_enabled(const SSL *s)
4566 return s->ct_validation_callback != NULL;
4569 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4571 return ctx->ct_validation_callback != NULL;
4574 int ssl_validate_ct(SSL *s)
4577 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4579 SSL_DANE *dane = &s->dane;
4580 CT_POLICY_EVAL_CTX *ctx = NULL;
4581 const STACK_OF(SCT) *scts;
4584 * If no callback is set, the peer is anonymous, or its chain is invalid,
4585 * skip SCT validation - just return success. Applications that continue
4586 * handshakes without certificates, with unverified chains, or pinned leaf
4587 * certificates are outside the scope of the WebPKI and CT.
4589 * The above exclusions notwithstanding the vast majority of peers will
4590 * have rather ordinary certificate chains validated by typical
4591 * applications that perform certificate verification and therefore will
4592 * process SCTs when enabled.
4594 if (s->ct_validation_callback == NULL || cert == NULL ||
4595 s->verify_result != X509_V_OK ||
4596 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4600 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4601 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4603 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4604 switch (dane->mtlsa->usage) {
4605 case DANETLS_USAGE_DANE_TA:
4606 case DANETLS_USAGE_DANE_EE:
4611 ctx = CT_POLICY_EVAL_CTX_new();
4613 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4617 issuer = sk_X509_value(s->verified_chain, 1);
4618 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4619 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4620 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4621 CT_POLICY_EVAL_CTX_set_time(
4622 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4624 scts = SSL_get0_peer_scts(s);
4627 * This function returns success (> 0) only when all the SCTs are valid, 0
4628 * when some are invalid, and < 0 on various internal errors (out of
4629 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4630 * reason to abort the handshake, that decision is up to the callback.
4631 * Therefore, we error out only in the unexpected case that the return
4632 * value is negative.
4634 * XXX: One might well argue that the return value of this function is an
4635 * unfortunate design choice. Its job is only to determine the validation
4636 * status of each of the provided SCTs. So long as it correctly separates
4637 * the wheat from the chaff it should return success. Failure in this case
4638 * ought to correspond to an inability to carry out its duties.
4640 if (SCT_LIST_validate(scts, ctx) < 0) {
4641 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4645 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4647 ret = 0; /* This function returns 0 on failure */
4650 CT_POLICY_EVAL_CTX_free(ctx);
4652 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4653 * failure return code here. Also the application may wish the complete
4654 * the handshake, and then disconnect cleanly at a higher layer, after
4655 * checking the verification status of the completed connection.
4657 * We therefore force a certificate verification failure which will be
4658 * visible via SSL_get_verify_result() and cached as part of any resumed
4661 * Note: the permissive callback is for information gathering only, always
4662 * returns success, and does not affect verification status. Only the
4663 * strict callback or a custom application-specified callback can trigger
4664 * connection failure or record a verification error.
4667 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4671 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4673 switch (validation_mode) {
4675 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4677 case SSL_CT_VALIDATION_PERMISSIVE:
4678 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4679 case SSL_CT_VALIDATION_STRICT:
4680 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4684 int SSL_enable_ct(SSL *s, int validation_mode)
4686 switch (validation_mode) {
4688 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4690 case SSL_CT_VALIDATION_PERMISSIVE:
4691 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4692 case SSL_CT_VALIDATION_STRICT:
4693 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4697 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4699 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4702 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4704 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4707 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4709 CTLOG_STORE_free(ctx->ctlog_store);
4710 ctx->ctlog_store = logs;
4713 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4715 return ctx->ctlog_store;
4718 #endif /* OPENSSL_NO_CT */
4720 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4723 c->client_hello_cb = cb;
4724 c->client_hello_cb_arg = arg;
4727 int SSL_client_hello_isv2(SSL *s)
4729 if (s->clienthello == NULL)
4731 return s->clienthello->isv2;
4734 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
4736 if (s->clienthello == NULL)
4738 return s->clienthello->legacy_version;
4741 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
4743 if (s->clienthello == NULL)
4746 *out = s->clienthello->random;
4747 return SSL3_RANDOM_SIZE;
4750 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
4752 if (s->clienthello == NULL)
4755 *out = s->clienthello->session_id;
4756 return s->clienthello->session_id_len;
4759 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
4761 if (s->clienthello == NULL)
4764 *out = PACKET_data(&s->clienthello->ciphersuites);
4765 return PACKET_remaining(&s->clienthello->ciphersuites);
4768 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
4770 if (s->clienthello == NULL)
4773 *out = s->clienthello->compressions;
4774 return s->clienthello->compressions_len;
4777 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4783 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4785 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4786 ext = s->clienthello->pre_proc_exts + i;
4790 present = OPENSSL_malloc(sizeof(*present) * num);
4791 if (present == NULL)
4793 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4794 ext = s->clienthello->pre_proc_exts + i;
4796 if (ext->received_order >= num)
4798 present[ext->received_order] = ext->type;
4805 OPENSSL_free(present);
4809 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4815 if (s->clienthello == NULL)
4817 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4818 r = s->clienthello->pre_proc_exts + i;
4819 if (r->present && r->type == type) {
4821 *out = PACKET_data(&r->data);
4823 *outlen = PACKET_remaining(&r->data);
4830 int SSL_free_buffers(SSL *ssl)
4832 RECORD_LAYER *rl = &ssl->rlayer;
4834 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4837 RECORD_LAYER_release(rl);
4841 int SSL_alloc_buffers(SSL *ssl)
4843 return ssl3_setup_buffers(ssl);
4846 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4848 ctx->keylog_callback = cb;
4851 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4853 return ctx->keylog_callback;
4856 static int nss_keylog_int(const char *prefix,
4858 const uint8_t *parameter_1,
4859 size_t parameter_1_len,
4860 const uint8_t *parameter_2,
4861 size_t parameter_2_len)
4864 char *cursor = NULL;
4869 if (ssl->ctx->keylog_callback == NULL) return 1;
4872 * Our output buffer will contain the following strings, rendered with
4873 * space characters in between, terminated by a NULL character: first the
4874 * prefix, then the first parameter, then the second parameter. The
4875 * meaning of each parameter depends on the specific key material being
4876 * logged. Note that the first and second parameters are encoded in
4877 * hexadecimal, so we need a buffer that is twice their lengths.
4879 prefix_len = strlen(prefix);
4880 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4881 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4882 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4886 strcpy(cursor, prefix);
4887 cursor += prefix_len;
4890 for (i = 0; i < parameter_1_len; i++) {
4891 sprintf(cursor, "%02x", parameter_1[i]);
4896 for (i = 0; i < parameter_2_len; i++) {
4897 sprintf(cursor, "%02x", parameter_2[i]);
4902 ssl->ctx->keylog_callback(ssl, (const char *)out);
4908 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4909 const uint8_t *encrypted_premaster,
4910 size_t encrypted_premaster_len,
4911 const uint8_t *premaster,
4912 size_t premaster_len)
4914 if (encrypted_premaster_len < 8) {
4915 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4919 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4920 return nss_keylog_int("RSA",
4922 encrypted_premaster,
4928 int ssl_log_secret(SSL *ssl,
4930 const uint8_t *secret,
4933 return nss_keylog_int(label,
4935 ssl->s3->client_random,
4941 #define SSLV2_CIPHER_LEN 3
4943 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4948 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4950 if (PACKET_remaining(cipher_suites) == 0) {
4951 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4952 *al = SSL_AD_ILLEGAL_PARAMETER;
4956 if (PACKET_remaining(cipher_suites) % n != 0) {
4957 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4958 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4959 *al = SSL_AD_DECODE_ERROR;
4963 OPENSSL_free(s->s3->tmp.ciphers_raw);
4964 s->s3->tmp.ciphers_raw = NULL;
4965 s->s3->tmp.ciphers_rawlen = 0;
4968 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4969 PACKET sslv2ciphers = *cipher_suites;
4970 unsigned int leadbyte;
4974 * We store the raw ciphers list in SSLv3+ format so we need to do some
4975 * preprocessing to convert the list first. If there are any SSLv2 only
4976 * ciphersuites with a non-zero leading byte then we are going to
4977 * slightly over allocate because we won't store those. But that isn't a
4980 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4981 s->s3->tmp.ciphers_raw = raw;
4983 *al = SSL_AD_INTERNAL_ERROR;
4986 for (s->s3->tmp.ciphers_rawlen = 0;
4987 PACKET_remaining(&sslv2ciphers) > 0;
4988 raw += TLS_CIPHER_LEN) {
4989 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4991 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4994 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4995 *al = SSL_AD_DECODE_ERROR;
4996 OPENSSL_free(s->s3->tmp.ciphers_raw);
4997 s->s3->tmp.ciphers_raw = NULL;
4998 s->s3->tmp.ciphers_rawlen = 0;
5002 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5004 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5005 &s->s3->tmp.ciphers_rawlen)) {
5006 *al = SSL_AD_INTERNAL_ERROR;
5014 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5015 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5016 STACK_OF(SSL_CIPHER) **scsvs)
5021 if (!PACKET_buf_init(&pkt, bytes, len))
5023 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5026 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5027 STACK_OF(SSL_CIPHER) **skp,
5028 STACK_OF(SSL_CIPHER) **scsvs_out,
5029 int sslv2format, int *al)
5031 const SSL_CIPHER *c;
5032 STACK_OF(SSL_CIPHER) *sk = NULL;
5033 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5035 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5036 unsigned char cipher[SSLV2_CIPHER_LEN];
5038 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5040 if (PACKET_remaining(cipher_suites) == 0) {
5041 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5042 *al = SSL_AD_ILLEGAL_PARAMETER;
5046 if (PACKET_remaining(cipher_suites) % n != 0) {
5047 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5048 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5049 *al = SSL_AD_DECODE_ERROR;
5053 sk = sk_SSL_CIPHER_new_null();
5054 scsvs = sk_SSL_CIPHER_new_null();
5055 if (sk == NULL || scsvs == NULL) {
5056 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5057 *al = SSL_AD_INTERNAL_ERROR;
5061 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5063 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5064 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5065 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5067 if (sslv2format && cipher[0] != '\0')
5070 /* For SSLv2-compat, ignore leading 0-byte. */
5071 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5073 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5074 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5075 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5076 *al = SSL_AD_INTERNAL_ERROR;
5081 if (PACKET_remaining(cipher_suites) > 0) {
5082 *al = SSL_AD_DECODE_ERROR;
5083 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5090 sk_SSL_CIPHER_free(sk);
5091 if (scsvs_out != NULL)
5094 sk_SSL_CIPHER_free(scsvs);
5097 sk_SSL_CIPHER_free(sk);
5098 sk_SSL_CIPHER_free(scsvs);
5102 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5104 ctx->max_early_data = max_early_data;
5109 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5111 return ctx->max_early_data;
5114 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5116 s->max_early_data = max_early_data;
5121 uint32_t SSL_get_max_early_data(const SSL *s)
5123 return s->max_early_data;
5126 int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5128 if (s->drbg != NULL)
5129 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5130 return RAND_bytes(rnd, (int)size);