2 * Copyright 1995-2016 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>
24 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
26 SSL3_ENC_METHOD ssl3_undef_enc_method = {
28 * evil casts, but these functions are only called if there's a library
31 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
32 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
33 ssl_undefined_function,
34 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
35 ssl_undefined_function,
36 (int (*)(SSL *, int))ssl_undefined_function,
37 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
38 ssl_undefined_function,
39 NULL, /* client_finished_label */
40 0, /* client_finished_label_len */
41 NULL, /* server_finished_label */
42 0, /* server_finished_label_len */
43 (int (*)(int))ssl_undefined_function,
44 (int (*)(SSL *, unsigned char *, size_t, const char *,
45 size_t, const unsigned char *, size_t,
46 int use_context))ssl_undefined_function,
49 struct ssl_async_args {
53 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
55 int (*func_read) (SSL *, void *, size_t, size_t *);
56 int (*func_write) (SSL *, const void *, size_t, size_t *);
57 int (*func_other) (SSL *);
67 DANETLS_MATCHING_FULL, 0, NID_undef
70 DANETLS_MATCHING_2256, 1, NID_sha256
73 DANETLS_MATCHING_2512, 2, NID_sha512
77 static int dane_ctx_enable(struct dane_ctx_st *dctx)
81 uint8_t mdmax = DANETLS_MATCHING_LAST;
82 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
85 if (dctx->mdevp != NULL)
88 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
89 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
91 if (mdord == NULL || mdevp == NULL) {
94 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
98 /* Install default entries */
99 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
102 if (dane_mds[i].nid == NID_undef ||
103 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
105 mdevp[dane_mds[i].mtype] = md;
106 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
116 static void dane_ctx_final(struct dane_ctx_st *dctx)
118 OPENSSL_free(dctx->mdevp);
121 OPENSSL_free(dctx->mdord);
126 static void tlsa_free(danetls_record *t)
130 OPENSSL_free(t->data);
131 EVP_PKEY_free(t->spki);
135 static void dane_final(SSL_DANE *dane)
137 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
140 sk_X509_pop_free(dane->certs, X509_free);
143 X509_free(dane->mcert);
151 * dane_copy - Copy dane configuration, sans verification state.
153 static int ssl_dane_dup(SSL *to, SSL *from)
158 if (!DANETLS_ENABLED(&from->dane))
161 dane_final(&to->dane);
162 to->dane.flags = from->dane.flags;
163 to->dane.dctx = &to->ctx->dane;
164 to->dane.trecs = sk_danetls_record_new_null();
166 if (to->dane.trecs == NULL) {
167 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
171 num = sk_danetls_record_num(from->dane.trecs);
172 for (i = 0; i < num; ++i) {
173 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
175 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
176 t->data, t->dlen) <= 0)
182 static int dane_mtype_set(struct dane_ctx_st *dctx,
183 const EVP_MD *md, uint8_t mtype, uint8_t ord)
187 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
188 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
192 if (mtype > dctx->mdmax) {
193 const EVP_MD **mdevp;
195 int n = ((int)mtype) + 1;
197 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
199 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
204 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
206 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
211 /* Zero-fill any gaps */
212 for (i = dctx->mdmax + 1; i < mtype; ++i) {
220 dctx->mdevp[mtype] = md;
221 /* Coerce ordinal of disabled matching types to 0 */
222 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
227 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
229 if (mtype > dane->dctx->mdmax)
231 return dane->dctx->mdevp[mtype];
234 static int dane_tlsa_add(SSL_DANE *dane,
237 uint8_t mtype, unsigned char *data, size_t dlen)
240 const EVP_MD *md = NULL;
241 int ilen = (int)dlen;
245 if (dane->trecs == NULL) {
246 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
250 if (ilen < 0 || dlen != (size_t)ilen) {
251 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
255 if (usage > DANETLS_USAGE_LAST) {
256 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
260 if (selector > DANETLS_SELECTOR_LAST) {
261 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
265 if (mtype != DANETLS_MATCHING_FULL) {
266 md = tlsa_md_get(dane, mtype);
268 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
273 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
274 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
278 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
282 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
283 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
288 t->selector = selector;
290 t->data = OPENSSL_malloc(dlen);
291 if (t->data == NULL) {
293 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
296 memcpy(t->data, data, dlen);
299 /* Validate and cache full certificate or public key */
300 if (mtype == DANETLS_MATCHING_FULL) {
301 const unsigned char *p = data;
303 EVP_PKEY *pkey = NULL;
306 case DANETLS_SELECTOR_CERT:
307 if (!d2i_X509(&cert, &p, ilen) || p < data ||
308 dlen != (size_t)(p - data)) {
310 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
313 if (X509_get0_pubkey(cert) == NULL) {
315 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
319 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
325 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
326 * records that contain full certificates of trust-anchors that are
327 * not present in the wire chain. For usage PKIX-TA(0), we augment
328 * the chain with untrusted Full(0) certificates from DNS, in case
329 * they are missing from the chain.
331 if ((dane->certs == NULL &&
332 (dane->certs = sk_X509_new_null()) == NULL) ||
333 !sk_X509_push(dane->certs, cert)) {
334 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
341 case DANETLS_SELECTOR_SPKI:
342 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
343 dlen != (size_t)(p - data)) {
345 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
350 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
351 * records that contain full bare keys of trust-anchors that are
352 * not present in the wire chain.
354 if (usage == DANETLS_USAGE_DANE_TA)
363 * Find the right insertion point for the new record.
365 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
366 * they can be processed first, as they require no chain building, and no
367 * expiration or hostname checks. Because DANE-EE(3) is numerically
368 * largest, this is accomplished via descending sort by "usage".
370 * We also sort in descending order by matching ordinal to simplify
371 * the implementation of digest agility in the verification code.
373 * The choice of order for the selector is not significant, so we
374 * use the same descending order for consistency.
376 num = sk_danetls_record_num(dane->trecs);
377 for (i = 0; i < num; ++i) {
378 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
380 if (rec->usage > usage)
382 if (rec->usage < usage)
384 if (rec->selector > selector)
386 if (rec->selector < selector)
388 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
393 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
395 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
398 dane->umask |= DANETLS_USAGE_BIT(usage);
404 * Return 0 if there is only one version configured and it was disabled
405 * at configure time. Return 1 otherwise.
407 static int ssl_check_allowed_versions(int min_version, int max_version)
409 int minisdtls = 0, maxisdtls = 0;
411 /* Figure out if we're doing DTLS versions or TLS versions */
412 if (min_version == DTLS1_BAD_VER
413 || min_version >> 8 == DTLS1_VERSION_MAJOR)
415 if (max_version == DTLS1_BAD_VER
416 || max_version >> 8 == DTLS1_VERSION_MAJOR)
418 /* A wildcard version of 0 could be DTLS or TLS. */
419 if ((minisdtls && !maxisdtls && max_version != 0)
420 || (maxisdtls && !minisdtls && min_version != 0)) {
421 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
425 if (minisdtls || maxisdtls) {
426 /* Do DTLS version checks. */
427 if (min_version == 0)
428 /* Ignore DTLS1_BAD_VER */
429 min_version = DTLS1_VERSION;
430 if (max_version == 0)
431 max_version = DTLS1_2_VERSION;
432 #ifdef OPENSSL_NO_DTLS1_2
433 if (max_version == DTLS1_2_VERSION)
434 max_version = DTLS1_VERSION;
436 #ifdef OPENSSL_NO_DTLS1
437 if (min_version == DTLS1_VERSION)
438 min_version = DTLS1_2_VERSION;
440 /* Done massaging versions; do the check. */
442 #ifdef OPENSSL_NO_DTLS1
443 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
444 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
446 #ifdef OPENSSL_NO_DTLS1_2
447 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
448 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
453 /* Regular TLS version checks. */
454 if (min_version == 0)
455 min_version = SSL3_VERSION;
456 if (max_version == 0)
457 max_version = TLS1_3_VERSION;
458 #ifdef OPENSSL_NO_TLS1_3
459 if (max_version == TLS1_3_VERSION)
460 max_version = TLS1_2_VERSION;
462 #ifdef OPENSSL_NO_TLS1_2
463 if (max_version == TLS1_2_VERSION)
464 max_version = TLS1_1_VERSION;
466 #ifdef OPENSSL_NO_TLS1_1
467 if (max_version == TLS1_1_VERSION)
468 max_version = TLS1_VERSION;
470 #ifdef OPENSSL_NO_TLS1
471 if (max_version == TLS1_VERSION)
472 max_version = SSL3_VERSION;
474 #ifdef OPENSSL_NO_SSL3
475 if (min_version == SSL3_VERSION)
476 min_version = TLS1_VERSION;
478 #ifdef OPENSSL_NO_TLS1
479 if (min_version == TLS1_VERSION)
480 min_version = TLS1_1_VERSION;
482 #ifdef OPENSSL_NO_TLS1_1
483 if (min_version == TLS1_1_VERSION)
484 min_version = TLS1_2_VERSION;
486 #ifdef OPENSSL_NO_TLS1_2
487 if (min_version == TLS1_2_VERSION)
488 min_version = TLS1_3_VERSION;
490 /* Done massaging versions; do the check. */
492 #ifdef OPENSSL_NO_SSL3
493 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
495 #ifdef OPENSSL_NO_TLS1
496 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
498 #ifdef OPENSSL_NO_TLS1_1
499 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
501 #ifdef OPENSSL_NO_TLS1_2
502 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
504 #ifdef OPENSSL_NO_TLS1_3
505 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
513 static void clear_ciphers(SSL *s)
515 /* clear the current cipher */
516 ssl_clear_cipher_ctx(s);
517 ssl_clear_hash_ctx(&s->read_hash);
518 ssl_clear_hash_ctx(&s->write_hash);
521 int SSL_clear(SSL *s)
523 if (s->method == NULL) {
524 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
528 if (ssl_clear_bad_session(s)) {
529 SSL_SESSION_free(s->session);
532 SSL_SESSION_free(s->psksession);
533 s->psksession = NULL;
539 if (s->renegotiate) {
540 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
544 ossl_statem_clear(s);
546 s->version = s->method->version;
547 s->client_version = s->version;
548 s->rwstate = SSL_NOTHING;
550 BUF_MEM_free(s->init_buf);
555 s->key_update = SSL_KEY_UPDATE_NONE;
557 /* Reset DANE verification result state */
560 X509_free(s->dane.mcert);
561 s->dane.mcert = NULL;
562 s->dane.mtlsa = NULL;
564 /* Clear the verification result peername */
565 X509_VERIFY_PARAM_move_peername(s->param, NULL);
568 * Check to see if we were changed into a different method, if so, revert
569 * back. We always do this in TLSv1.3. Below that we only do it if we are
570 * not doing session-id reuse.
572 if (s->method != s->ctx->method
574 || (!ossl_statem_get_in_handshake(s) && s->session == NULL))) {
575 s->method->ssl_free(s);
576 s->method = s->ctx->method;
577 if (!s->method->ssl_new(s))
580 if (!s->method->ssl_clear(s))
584 RECORD_LAYER_clear(&s->rlayer);
589 /** Used to change an SSL_CTXs default SSL method type */
590 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
592 STACK_OF(SSL_CIPHER) *sk;
596 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
597 &(ctx->cipher_list_by_id),
598 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
599 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
600 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
606 SSL *SSL_new(SSL_CTX *ctx)
611 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
614 if (ctx->method == NULL) {
615 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
619 s = OPENSSL_zalloc(sizeof(*s));
623 s->lock = CRYPTO_THREAD_lock_new();
624 if (s->lock == NULL) {
625 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
630 RECORD_LAYER_init(&s->rlayer, s);
632 s->options = ctx->options;
633 s->dane.flags = ctx->dane.flags;
634 s->min_proto_version = ctx->min_proto_version;
635 s->max_proto_version = ctx->max_proto_version;
637 s->max_cert_list = ctx->max_cert_list;
639 s->max_early_data = ctx->max_early_data;
642 * Earlier library versions used to copy the pointer to the CERT, not
643 * its contents; only when setting new parameters for the per-SSL
644 * copy, ssl_cert_new would be called (and the direct reference to
645 * the per-SSL_CTX settings would be lost, but those still were
646 * indirectly accessed for various purposes, and for that reason they
647 * used to be known as s->ctx->default_cert). Now we don't look at the
648 * SSL_CTX's CERT after having duplicated it once.
650 s->cert = ssl_cert_dup(ctx->cert);
654 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
655 s->msg_callback = ctx->msg_callback;
656 s->msg_callback_arg = ctx->msg_callback_arg;
657 s->verify_mode = ctx->verify_mode;
658 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
659 s->record_padding_cb = ctx->record_padding_cb;
660 s->record_padding_arg = ctx->record_padding_arg;
661 s->block_padding = ctx->block_padding;
662 s->sid_ctx_length = ctx->sid_ctx_length;
663 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
665 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
666 s->verify_callback = ctx->default_verify_callback;
667 s->generate_session_id = ctx->generate_session_id;
669 s->param = X509_VERIFY_PARAM_new();
670 if (s->param == NULL)
672 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
673 s->quiet_shutdown = ctx->quiet_shutdown;
674 s->max_send_fragment = ctx->max_send_fragment;
675 s->split_send_fragment = ctx->split_send_fragment;
676 s->max_pipelines = ctx->max_pipelines;
677 if (s->max_pipelines > 1)
678 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
679 if (ctx->default_read_buf_len > 0)
680 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
685 s->ext.debug_arg = NULL;
686 s->ext.ticket_expected = 0;
687 s->ext.status_type = ctx->ext.status_type;
688 s->ext.status_expected = 0;
689 s->ext.ocsp.ids = NULL;
690 s->ext.ocsp.exts = NULL;
691 s->ext.ocsp.resp = NULL;
692 s->ext.ocsp.resp_len = 0;
694 s->session_ctx = ctx;
695 #ifndef OPENSSL_NO_EC
696 if (ctx->ext.ecpointformats) {
697 s->ext.ecpointformats =
698 OPENSSL_memdup(ctx->ext.ecpointformats,
699 ctx->ext.ecpointformats_len);
700 if (!s->ext.ecpointformats)
702 s->ext.ecpointformats_len =
703 ctx->ext.ecpointformats_len;
705 if (ctx->ext.supportedgroups) {
706 s->ext.supportedgroups =
707 OPENSSL_memdup(ctx->ext.supportedgroups,
708 ctx->ext.supportedgroups_len);
709 if (!s->ext.supportedgroups)
711 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
714 #ifndef OPENSSL_NO_NEXTPROTONEG
718 if (s->ctx->ext.alpn) {
719 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
720 if (s->ext.alpn == NULL)
722 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
723 s->ext.alpn_len = s->ctx->ext.alpn_len;
726 s->verified_chain = NULL;
727 s->verify_result = X509_V_OK;
729 s->default_passwd_callback = ctx->default_passwd_callback;
730 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
732 s->method = ctx->method;
734 s->key_update = SSL_KEY_UPDATE_NONE;
736 if (!s->method->ssl_new(s))
739 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
744 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
747 #ifndef OPENSSL_NO_PSK
748 s->psk_client_callback = ctx->psk_client_callback;
749 s->psk_server_callback = ctx->psk_server_callback;
751 s->psk_find_session_cb = ctx->psk_find_session_cb;
752 s->psk_use_session_cb = ctx->psk_use_session_cb;
756 #ifndef OPENSSL_NO_CT
757 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
758 ctx->ct_validation_callback_arg))
765 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
769 int SSL_is_dtls(const SSL *s)
771 return SSL_IS_DTLS(s) ? 1 : 0;
774 int SSL_up_ref(SSL *s)
778 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
781 REF_PRINT_COUNT("SSL", s);
782 REF_ASSERT_ISNT(i < 2);
783 return ((i > 1) ? 1 : 0);
786 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
787 unsigned int sid_ctx_len)
789 if (sid_ctx_len > sizeof ctx->sid_ctx) {
790 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
791 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
794 ctx->sid_ctx_length = sid_ctx_len;
795 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
800 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
801 unsigned int sid_ctx_len)
803 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
804 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
805 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
808 ssl->sid_ctx_length = sid_ctx_len;
809 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
814 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
816 CRYPTO_THREAD_write_lock(ctx->lock);
817 ctx->generate_session_id = cb;
818 CRYPTO_THREAD_unlock(ctx->lock);
822 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
824 CRYPTO_THREAD_write_lock(ssl->lock);
825 ssl->generate_session_id = cb;
826 CRYPTO_THREAD_unlock(ssl->lock);
830 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
834 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
835 * we can "construct" a session to give us the desired check - i.e. to
836 * find if there's a session in the hash table that would conflict with
837 * any new session built out of this id/id_len and the ssl_version in use
842 if (id_len > sizeof r.session_id)
845 r.ssl_version = ssl->version;
846 r.session_id_length = id_len;
847 memcpy(r.session_id, id, id_len);
849 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
850 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
851 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
855 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
857 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
860 int SSL_set_purpose(SSL *s, int purpose)
862 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
865 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
867 return X509_VERIFY_PARAM_set_trust(s->param, trust);
870 int SSL_set_trust(SSL *s, int trust)
872 return X509_VERIFY_PARAM_set_trust(s->param, trust);
875 int SSL_set1_host(SSL *s, const char *hostname)
877 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
880 int SSL_add1_host(SSL *s, const char *hostname)
882 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
885 void SSL_set_hostflags(SSL *s, unsigned int flags)
887 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
890 const char *SSL_get0_peername(SSL *s)
892 return X509_VERIFY_PARAM_get0_peername(s->param);
895 int SSL_CTX_dane_enable(SSL_CTX *ctx)
897 return dane_ctx_enable(&ctx->dane);
900 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
902 unsigned long orig = ctx->dane.flags;
904 ctx->dane.flags |= flags;
908 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
910 unsigned long orig = ctx->dane.flags;
912 ctx->dane.flags &= ~flags;
916 int SSL_dane_enable(SSL *s, const char *basedomain)
918 SSL_DANE *dane = &s->dane;
920 if (s->ctx->dane.mdmax == 0) {
921 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
924 if (dane->trecs != NULL) {
925 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
930 * Default SNI name. This rejects empty names, while set1_host below
931 * accepts them and disables host name checks. To avoid side-effects with
932 * invalid input, set the SNI name first.
934 if (s->ext.hostname == NULL) {
935 if (!SSL_set_tlsext_host_name(s, basedomain)) {
936 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
941 /* Primary RFC6125 reference identifier */
942 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
943 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
949 dane->dctx = &s->ctx->dane;
950 dane->trecs = sk_danetls_record_new_null();
952 if (dane->trecs == NULL) {
953 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
959 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
961 unsigned long orig = ssl->dane.flags;
963 ssl->dane.flags |= flags;
967 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
969 unsigned long orig = ssl->dane.flags;
971 ssl->dane.flags &= ~flags;
975 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
977 SSL_DANE *dane = &s->dane;
979 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
983 *mcert = dane->mcert;
985 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
990 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
991 uint8_t *mtype, unsigned const char **data, size_t *dlen)
993 SSL_DANE *dane = &s->dane;
995 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
999 *usage = dane->mtlsa->usage;
1001 *selector = dane->mtlsa->selector;
1003 *mtype = dane->mtlsa->mtype;
1005 *data = dane->mtlsa->data;
1007 *dlen = dane->mtlsa->dlen;
1012 SSL_DANE *SSL_get0_dane(SSL *s)
1017 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1018 uint8_t mtype, unsigned char *data, size_t dlen)
1020 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1023 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1026 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1029 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1031 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1034 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1036 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1039 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1044 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1049 void SSL_certs_clear(SSL *s)
1051 ssl_cert_clear_certs(s->cert);
1054 void SSL_free(SSL *s)
1061 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1062 REF_PRINT_COUNT("SSL", s);
1065 REF_ASSERT_ISNT(i < 0);
1067 X509_VERIFY_PARAM_free(s->param);
1068 dane_final(&s->dane);
1069 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1071 /* Ignore return value */
1072 ssl_free_wbio_buffer(s);
1074 BIO_free_all(s->wbio);
1075 BIO_free_all(s->rbio);
1077 BUF_MEM_free(s->init_buf);
1079 /* add extra stuff */
1080 sk_SSL_CIPHER_free(s->cipher_list);
1081 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1083 /* Make the next call work :-) */
1084 if (s->session != NULL) {
1085 ssl_clear_bad_session(s);
1086 SSL_SESSION_free(s->session);
1088 SSL_SESSION_free(s->psksession);
1092 ssl_cert_free(s->cert);
1093 /* Free up if allocated */
1095 OPENSSL_free(s->ext.hostname);
1096 SSL_CTX_free(s->session_ctx);
1097 #ifndef OPENSSL_NO_EC
1098 OPENSSL_free(s->ext.ecpointformats);
1099 OPENSSL_free(s->ext.supportedgroups);
1100 #endif /* OPENSSL_NO_EC */
1101 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1102 #ifndef OPENSSL_NO_OCSP
1103 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1105 #ifndef OPENSSL_NO_CT
1106 SCT_LIST_free(s->scts);
1107 OPENSSL_free(s->ext.scts);
1109 OPENSSL_free(s->ext.ocsp.resp);
1110 OPENSSL_free(s->ext.alpn);
1111 OPENSSL_free(s->ext.tls13_cookie);
1112 OPENSSL_free(s->clienthello);
1114 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1116 sk_X509_pop_free(s->verified_chain, X509_free);
1118 if (s->method != NULL)
1119 s->method->ssl_free(s);
1121 RECORD_LAYER_release(&s->rlayer);
1123 SSL_CTX_free(s->ctx);
1125 ASYNC_WAIT_CTX_free(s->waitctx);
1127 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1128 OPENSSL_free(s->ext.npn);
1131 #ifndef OPENSSL_NO_SRTP
1132 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1135 CRYPTO_THREAD_lock_free(s->lock);
1140 void SSL_set0_rbio(SSL *s, BIO *rbio)
1142 BIO_free_all(s->rbio);
1146 void SSL_set0_wbio(SSL *s, BIO *wbio)
1149 * If the output buffering BIO is still in place, remove it
1151 if (s->bbio != NULL)
1152 s->wbio = BIO_pop(s->wbio);
1154 BIO_free_all(s->wbio);
1157 /* Re-attach |bbio| to the new |wbio|. */
1158 if (s->bbio != NULL)
1159 s->wbio = BIO_push(s->bbio, s->wbio);
1162 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1165 * For historical reasons, this function has many different cases in
1166 * ownership handling.
1169 /* If nothing has changed, do nothing */
1170 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1174 * If the two arguments are equal then one fewer reference is granted by the
1175 * caller than we want to take
1177 if (rbio != NULL && rbio == wbio)
1181 * If only the wbio is changed only adopt one reference.
1183 if (rbio == SSL_get_rbio(s)) {
1184 SSL_set0_wbio(s, wbio);
1188 * There is an asymmetry here for historical reasons. If only the rbio is
1189 * changed AND the rbio and wbio were originally different, then we only
1190 * adopt one reference.
1192 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1193 SSL_set0_rbio(s, rbio);
1197 /* Otherwise, adopt both references. */
1198 SSL_set0_rbio(s, rbio);
1199 SSL_set0_wbio(s, wbio);
1202 BIO *SSL_get_rbio(const SSL *s)
1207 BIO *SSL_get_wbio(const SSL *s)
1209 if (s->bbio != NULL) {
1211 * If |bbio| is active, the true caller-configured BIO is its
1214 return BIO_next(s->bbio);
1219 int SSL_get_fd(const SSL *s)
1221 return SSL_get_rfd(s);
1224 int SSL_get_rfd(const SSL *s)
1229 b = SSL_get_rbio(s);
1230 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1232 BIO_get_fd(r, &ret);
1236 int SSL_get_wfd(const SSL *s)
1241 b = SSL_get_wbio(s);
1242 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1244 BIO_get_fd(r, &ret);
1248 #ifndef OPENSSL_NO_SOCK
1249 int SSL_set_fd(SSL *s, int fd)
1254 bio = BIO_new(BIO_s_socket());
1257 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1260 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1261 SSL_set_bio(s, bio, bio);
1267 int SSL_set_wfd(SSL *s, int fd)
1269 BIO *rbio = SSL_get_rbio(s);
1271 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1272 || (int)BIO_get_fd(rbio, NULL) != fd) {
1273 BIO *bio = BIO_new(BIO_s_socket());
1276 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1279 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1280 SSL_set0_wbio(s, bio);
1283 SSL_set0_wbio(s, rbio);
1288 int SSL_set_rfd(SSL *s, int fd)
1290 BIO *wbio = SSL_get_wbio(s);
1292 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1293 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1294 BIO *bio = BIO_new(BIO_s_socket());
1297 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1300 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1301 SSL_set0_rbio(s, bio);
1304 SSL_set0_rbio(s, wbio);
1311 /* return length of latest Finished message we sent, copy to 'buf' */
1312 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1316 if (s->s3 != NULL) {
1317 ret = s->s3->tmp.finish_md_len;
1320 memcpy(buf, s->s3->tmp.finish_md, count);
1325 /* return length of latest Finished message we expected, copy to 'buf' */
1326 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1330 if (s->s3 != NULL) {
1331 ret = s->s3->tmp.peer_finish_md_len;
1334 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1339 int SSL_get_verify_mode(const SSL *s)
1341 return (s->verify_mode);
1344 int SSL_get_verify_depth(const SSL *s)
1346 return X509_VERIFY_PARAM_get_depth(s->param);
1349 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1350 return (s->verify_callback);
1353 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1355 return (ctx->verify_mode);
1358 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1360 return X509_VERIFY_PARAM_get_depth(ctx->param);
1363 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1364 return (ctx->default_verify_callback);
1367 void SSL_set_verify(SSL *s, int mode,
1368 int (*callback) (int ok, X509_STORE_CTX *ctx))
1370 s->verify_mode = mode;
1371 if (callback != NULL)
1372 s->verify_callback = callback;
1375 void SSL_set_verify_depth(SSL *s, int depth)
1377 X509_VERIFY_PARAM_set_depth(s->param, depth);
1380 void SSL_set_read_ahead(SSL *s, int yes)
1382 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1385 int SSL_get_read_ahead(const SSL *s)
1387 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1390 int SSL_pending(const SSL *s)
1392 size_t pending = s->method->ssl_pending(s);
1395 * SSL_pending cannot work properly if read-ahead is enabled
1396 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1397 * impossible to fix since SSL_pending cannot report errors that may be
1398 * observed while scanning the new data. (Note that SSL_pending() is
1399 * often used as a boolean value, so we'd better not return -1.)
1401 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1402 * we just return INT_MAX.
1404 return pending < INT_MAX ? (int)pending : INT_MAX;
1407 int SSL_has_pending(const SSL *s)
1410 * Similar to SSL_pending() but returns a 1 to indicate that we have
1411 * unprocessed data available or 0 otherwise (as opposed to the number of
1412 * bytes available). Unlike SSL_pending() this will take into account
1413 * read_ahead data. A 1 return simply indicates that we have unprocessed
1414 * data. That data may not result in any application data, or we may fail
1415 * to parse the records for some reason.
1417 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1420 return RECORD_LAYER_read_pending(&s->rlayer);
1423 X509 *SSL_get_peer_certificate(const SSL *s)
1427 if ((s == NULL) || (s->session == NULL))
1430 r = s->session->peer;
1440 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1444 if ((s == NULL) || (s->session == NULL))
1447 r = s->session->peer_chain;
1450 * If we are a client, cert_chain includes the peer's own certificate; if
1451 * we are a server, it does not.
1458 * Now in theory, since the calling process own 't' it should be safe to
1459 * modify. We need to be able to read f without being hassled
1461 int SSL_copy_session_id(SSL *t, const SSL *f)
1464 /* Do we need to to SSL locking? */
1465 if (!SSL_set_session(t, SSL_get_session(f))) {
1470 * what if we are setup for one protocol version but want to talk another
1472 if (t->method != f->method) {
1473 t->method->ssl_free(t);
1474 t->method = f->method;
1475 if (t->method->ssl_new(t) == 0)
1479 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1480 ssl_cert_free(t->cert);
1482 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1489 /* Fix this so it checks all the valid key/cert options */
1490 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1492 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1493 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1496 if (ctx->cert->key->privatekey == NULL) {
1497 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1500 return (X509_check_private_key
1501 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1504 /* Fix this function so that it takes an optional type parameter */
1505 int SSL_check_private_key(const SSL *ssl)
1508 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1511 if (ssl->cert->key->x509 == NULL) {
1512 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1515 if (ssl->cert->key->privatekey == NULL) {
1516 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1519 return (X509_check_private_key(ssl->cert->key->x509,
1520 ssl->cert->key->privatekey));
1523 int SSL_waiting_for_async(SSL *s)
1531 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1533 ASYNC_WAIT_CTX *ctx = s->waitctx;
1537 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1540 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1541 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1543 ASYNC_WAIT_CTX *ctx = s->waitctx;
1547 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1551 int SSL_accept(SSL *s)
1553 if (s->handshake_func == NULL) {
1554 /* Not properly initialized yet */
1555 SSL_set_accept_state(s);
1558 return SSL_do_handshake(s);
1561 int SSL_connect(SSL *s)
1563 if (s->handshake_func == NULL) {
1564 /* Not properly initialized yet */
1565 SSL_set_connect_state(s);
1568 return SSL_do_handshake(s);
1571 long SSL_get_default_timeout(const SSL *s)
1573 return (s->method->get_timeout());
1576 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1577 int (*func) (void *))
1580 if (s->waitctx == NULL) {
1581 s->waitctx = ASYNC_WAIT_CTX_new();
1582 if (s->waitctx == NULL)
1585 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1586 sizeof(struct ssl_async_args))) {
1588 s->rwstate = SSL_NOTHING;
1589 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1592 s->rwstate = SSL_ASYNC_PAUSED;
1595 s->rwstate = SSL_ASYNC_NO_JOBS;
1601 s->rwstate = SSL_NOTHING;
1602 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1603 /* Shouldn't happen */
1608 static int ssl_io_intern(void *vargs)
1610 struct ssl_async_args *args;
1615 args = (struct ssl_async_args *)vargs;
1619 switch (args->type) {
1621 return args->f.func_read(s, buf, num, &s->asyncrw);
1623 return args->f.func_write(s, buf, num, &s->asyncrw);
1625 return args->f.func_other(s);
1630 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1632 if (s->handshake_func == NULL) {
1633 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1637 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1638 s->rwstate = SSL_NOTHING;
1642 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1643 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1644 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1648 * If we are a client and haven't received the ServerHello etc then we
1651 ossl_statem_check_finish_init(s, 0);
1653 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1654 struct ssl_async_args args;
1660 args.type = READFUNC;
1661 args.f.func_read = s->method->ssl_read;
1663 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1664 *readbytes = s->asyncrw;
1667 return s->method->ssl_read(s, buf, num, readbytes);
1671 int SSL_read(SSL *s, void *buf, int num)
1677 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1681 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1684 * The cast is safe here because ret should be <= INT_MAX because num is
1688 ret = (int)readbytes;
1693 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1695 int ret = ssl_read_internal(s, buf, num, readbytes);
1702 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1707 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1708 return SSL_READ_EARLY_DATA_ERROR;
1711 switch (s->early_data_state) {
1712 case SSL_EARLY_DATA_NONE:
1713 if (!SSL_in_before(s)) {
1714 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1715 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1716 return SSL_READ_EARLY_DATA_ERROR;
1720 case SSL_EARLY_DATA_ACCEPT_RETRY:
1721 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1722 ret = SSL_accept(s);
1725 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1726 return SSL_READ_EARLY_DATA_ERROR;
1730 case SSL_EARLY_DATA_READ_RETRY:
1731 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1732 s->early_data_state = SSL_EARLY_DATA_READING;
1733 ret = SSL_read_ex(s, buf, num, readbytes);
1735 * State machine will update early_data_state to
1736 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1739 if (ret > 0 || (ret <= 0 && s->early_data_state
1740 != SSL_EARLY_DATA_FINISHED_READING)) {
1741 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1742 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1743 : SSL_READ_EARLY_DATA_ERROR;
1746 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1749 return SSL_READ_EARLY_DATA_FINISH;
1752 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1753 return SSL_READ_EARLY_DATA_ERROR;
1757 int SSL_get_early_data_status(const SSL *s)
1759 return s->ext.early_data;
1762 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1764 if (s->handshake_func == NULL) {
1765 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1769 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1772 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1773 struct ssl_async_args args;
1779 args.type = READFUNC;
1780 args.f.func_read = s->method->ssl_peek;
1782 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1783 *readbytes = s->asyncrw;
1786 return s->method->ssl_peek(s, buf, num, readbytes);
1790 int SSL_peek(SSL *s, void *buf, int num)
1796 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1800 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1803 * The cast is safe here because ret should be <= INT_MAX because num is
1807 ret = (int)readbytes;
1813 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1815 int ret = ssl_peek_internal(s, buf, num, readbytes);
1822 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1824 if (s->handshake_func == NULL) {
1825 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1829 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1830 s->rwstate = SSL_NOTHING;
1831 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1835 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1836 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1837 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1838 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1841 /* If we are a client and haven't sent the Finished we better do that */
1842 ossl_statem_check_finish_init(s, 1);
1844 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1846 struct ssl_async_args args;
1849 args.buf = (void *)buf;
1851 args.type = WRITEFUNC;
1852 args.f.func_write = s->method->ssl_write;
1854 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1855 *written = s->asyncrw;
1858 return s->method->ssl_write(s, buf, num, written);
1862 int SSL_write(SSL *s, const void *buf, int num)
1868 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1872 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1875 * The cast is safe here because ret should be <= INT_MAX because num is
1884 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1886 int ret = ssl_write_internal(s, buf, num, written);
1893 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1895 int ret, early_data_state;
1897 switch (s->early_data_state) {
1898 case SSL_EARLY_DATA_NONE:
1900 || !SSL_in_before(s)
1901 || s->session == NULL
1902 || s->session->ext.max_early_data == 0) {
1903 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1904 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1909 case SSL_EARLY_DATA_CONNECT_RETRY:
1910 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1911 ret = SSL_connect(s);
1914 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1919 case SSL_EARLY_DATA_WRITE_RETRY:
1920 s->early_data_state = SSL_EARLY_DATA_WRITING;
1921 ret = SSL_write_ex(s, buf, num, written);
1922 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1925 case SSL_EARLY_DATA_FINISHED_READING:
1926 case SSL_EARLY_DATA_READ_RETRY:
1927 early_data_state = s->early_data_state;
1928 /* We are a server writing to an unauthenticated client */
1929 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1930 ret = SSL_write_ex(s, buf, num, written);
1931 s->early_data_state = early_data_state;
1935 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1940 int SSL_shutdown(SSL *s)
1943 * Note that this function behaves differently from what one might
1944 * expect. Return values are 0 for no success (yet), 1 for success; but
1945 * calling it once is usually not enough, even if blocking I/O is used
1946 * (see ssl3_shutdown).
1949 if (s->handshake_func == NULL) {
1950 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1954 if (!SSL_in_init(s)) {
1955 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1956 struct ssl_async_args args;
1959 args.type = OTHERFUNC;
1960 args.f.func_other = s->method->ssl_shutdown;
1962 return ssl_start_async_job(s, &args, ssl_io_intern);
1964 return s->method->ssl_shutdown(s);
1967 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1972 int SSL_key_update(SSL *s, int updatetype)
1975 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1976 * negotiated, and that it is appropriate to call SSL_key_update() instead
1977 * of SSL_renegotiate().
1979 if (!SSL_IS_TLS13(s)) {
1980 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
1984 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
1985 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
1986 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
1990 if (!SSL_is_init_finished(s)) {
1991 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
1995 ossl_statem_set_in_init(s, 1);
1996 s->key_update = updatetype;
2000 int SSL_get_key_update_type(SSL *s)
2002 return s->key_update;
2005 int SSL_renegotiate(SSL *s)
2007 if (SSL_IS_TLS13(s)) {
2008 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2012 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2013 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2020 return (s->method->ssl_renegotiate(s));
2023 int SSL_renegotiate_abbreviated(SSL *s)
2025 if (SSL_IS_TLS13(s)) {
2026 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2030 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2031 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2038 return (s->method->ssl_renegotiate(s));
2041 int SSL_renegotiate_pending(SSL *s)
2044 * becomes true when negotiation is requested; false again once a
2045 * handshake has finished
2047 return (s->renegotiate != 0);
2050 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2055 case SSL_CTRL_GET_READ_AHEAD:
2056 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2057 case SSL_CTRL_SET_READ_AHEAD:
2058 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2059 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2062 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2063 s->msg_callback_arg = parg;
2067 return (s->mode |= larg);
2068 case SSL_CTRL_CLEAR_MODE:
2069 return (s->mode &= ~larg);
2070 case SSL_CTRL_GET_MAX_CERT_LIST:
2071 return (long)(s->max_cert_list);
2072 case SSL_CTRL_SET_MAX_CERT_LIST:
2075 l = (long)s->max_cert_list;
2076 s->max_cert_list = (size_t)larg;
2078 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2079 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2081 s->max_send_fragment = larg;
2082 if (s->max_send_fragment < s->split_send_fragment)
2083 s->split_send_fragment = s->max_send_fragment;
2085 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2086 if ((size_t)larg > s->max_send_fragment || larg == 0)
2088 s->split_send_fragment = larg;
2090 case SSL_CTRL_SET_MAX_PIPELINES:
2091 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2093 s->max_pipelines = larg;
2095 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2097 case SSL_CTRL_GET_RI_SUPPORT:
2099 return s->s3->send_connection_binding;
2102 case SSL_CTRL_CERT_FLAGS:
2103 return (s->cert->cert_flags |= larg);
2104 case SSL_CTRL_CLEAR_CERT_FLAGS:
2105 return (s->cert->cert_flags &= ~larg);
2107 case SSL_CTRL_GET_RAW_CIPHERLIST:
2109 if (s->s3->tmp.ciphers_raw == NULL)
2111 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2112 return (int)s->s3->tmp.ciphers_rawlen;
2114 return TLS_CIPHER_LEN;
2116 case SSL_CTRL_GET_EXTMS_SUPPORT:
2117 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2119 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2123 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2124 return ssl_check_allowed_versions(larg, s->max_proto_version)
2125 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2126 &s->min_proto_version);
2127 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2128 return ssl_check_allowed_versions(s->min_proto_version, larg)
2129 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2130 &s->max_proto_version);
2132 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2136 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2139 case SSL_CTRL_SET_MSG_CALLBACK:
2140 s->msg_callback = (void (*)
2141 (int write_p, int version, int content_type,
2142 const void *buf, size_t len, SSL *ssl,
2147 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2151 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2153 return ctx->sessions;
2156 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2159 /* For some cases with ctx == NULL perform syntax checks */
2162 #ifndef OPENSSL_NO_EC
2163 case SSL_CTRL_SET_GROUPS_LIST:
2164 return tls1_set_groups_list(NULL, NULL, parg);
2166 case SSL_CTRL_SET_SIGALGS_LIST:
2167 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2168 return tls1_set_sigalgs_list(NULL, parg, 0);
2175 case SSL_CTRL_GET_READ_AHEAD:
2176 return (ctx->read_ahead);
2177 case SSL_CTRL_SET_READ_AHEAD:
2178 l = ctx->read_ahead;
2179 ctx->read_ahead = larg;
2182 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2183 ctx->msg_callback_arg = parg;
2186 case SSL_CTRL_GET_MAX_CERT_LIST:
2187 return (long)(ctx->max_cert_list);
2188 case SSL_CTRL_SET_MAX_CERT_LIST:
2191 l = (long)ctx->max_cert_list;
2192 ctx->max_cert_list = (size_t)larg;
2195 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2198 l = (long)ctx->session_cache_size;
2199 ctx->session_cache_size = (size_t)larg;
2201 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2202 return (long)(ctx->session_cache_size);
2203 case SSL_CTRL_SET_SESS_CACHE_MODE:
2204 l = ctx->session_cache_mode;
2205 ctx->session_cache_mode = larg;
2207 case SSL_CTRL_GET_SESS_CACHE_MODE:
2208 return (ctx->session_cache_mode);
2210 case SSL_CTRL_SESS_NUMBER:
2211 return (lh_SSL_SESSION_num_items(ctx->sessions));
2212 case SSL_CTRL_SESS_CONNECT:
2213 return (ctx->stats.sess_connect);
2214 case SSL_CTRL_SESS_CONNECT_GOOD:
2215 return (ctx->stats.sess_connect_good);
2216 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2217 return (ctx->stats.sess_connect_renegotiate);
2218 case SSL_CTRL_SESS_ACCEPT:
2219 return (ctx->stats.sess_accept);
2220 case SSL_CTRL_SESS_ACCEPT_GOOD:
2221 return (ctx->stats.sess_accept_good);
2222 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2223 return (ctx->stats.sess_accept_renegotiate);
2224 case SSL_CTRL_SESS_HIT:
2225 return (ctx->stats.sess_hit);
2226 case SSL_CTRL_SESS_CB_HIT:
2227 return (ctx->stats.sess_cb_hit);
2228 case SSL_CTRL_SESS_MISSES:
2229 return (ctx->stats.sess_miss);
2230 case SSL_CTRL_SESS_TIMEOUTS:
2231 return (ctx->stats.sess_timeout);
2232 case SSL_CTRL_SESS_CACHE_FULL:
2233 return (ctx->stats.sess_cache_full);
2235 return (ctx->mode |= larg);
2236 case SSL_CTRL_CLEAR_MODE:
2237 return (ctx->mode &= ~larg);
2238 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2239 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2241 ctx->max_send_fragment = larg;
2242 if (ctx->max_send_fragment < ctx->split_send_fragment)
2243 ctx->split_send_fragment = ctx->max_send_fragment;
2245 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2246 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2248 ctx->split_send_fragment = larg;
2250 case SSL_CTRL_SET_MAX_PIPELINES:
2251 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2253 ctx->max_pipelines = larg;
2255 case SSL_CTRL_CERT_FLAGS:
2256 return (ctx->cert->cert_flags |= larg);
2257 case SSL_CTRL_CLEAR_CERT_FLAGS:
2258 return (ctx->cert->cert_flags &= ~larg);
2259 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2260 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2261 && ssl_set_version_bound(ctx->method->version, (int)larg,
2262 &ctx->min_proto_version);
2263 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2264 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2265 && ssl_set_version_bound(ctx->method->version, (int)larg,
2266 &ctx->max_proto_version);
2268 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2272 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2275 case SSL_CTRL_SET_MSG_CALLBACK:
2276 ctx->msg_callback = (void (*)
2277 (int write_p, int version, int content_type,
2278 const void *buf, size_t len, SSL *ssl,
2283 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2287 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2296 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2297 const SSL_CIPHER *const *bp)
2299 if ((*ap)->id > (*bp)->id)
2301 if ((*ap)->id < (*bp)->id)
2306 /** return a STACK of the ciphers available for the SSL and in order of
2308 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2311 if (s->cipher_list != NULL) {
2312 return (s->cipher_list);
2313 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2314 return (s->ctx->cipher_list);
2320 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2322 if ((s == NULL) || (s->session == NULL) || !s->server)
2324 return s->session->ciphers;
2327 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2329 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2331 ciphers = SSL_get_ciphers(s);
2334 ssl_set_client_disabled(s);
2335 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2336 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2337 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2339 sk = sk_SSL_CIPHER_new_null();
2342 if (!sk_SSL_CIPHER_push(sk, c)) {
2343 sk_SSL_CIPHER_free(sk);
2351 /** return a STACK of the ciphers available for the SSL and in order of
2353 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2356 if (s->cipher_list_by_id != NULL) {
2357 return (s->cipher_list_by_id);
2358 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2359 return (s->ctx->cipher_list_by_id);
2365 /** The old interface to get the same thing as SSL_get_ciphers() */
2366 const char *SSL_get_cipher_list(const SSL *s, int n)
2368 const SSL_CIPHER *c;
2369 STACK_OF(SSL_CIPHER) *sk;
2373 sk = SSL_get_ciphers(s);
2374 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2376 c = sk_SSL_CIPHER_value(sk, n);
2382 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2384 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2387 return ctx->cipher_list;
2391 /** specify the ciphers to be used by default by the SSL_CTX */
2392 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2394 STACK_OF(SSL_CIPHER) *sk;
2396 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2397 &ctx->cipher_list_by_id, str, ctx->cert);
2399 * ssl_create_cipher_list may return an empty stack if it was unable to
2400 * find a cipher matching the given rule string (for example if the rule
2401 * string specifies a cipher which has been disabled). This is not an
2402 * error as far as ssl_create_cipher_list is concerned, and hence
2403 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2407 else if (sk_SSL_CIPHER_num(sk) == 0) {
2408 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2414 /** specify the ciphers to be used by the SSL */
2415 int SSL_set_cipher_list(SSL *s, const char *str)
2417 STACK_OF(SSL_CIPHER) *sk;
2419 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2420 &s->cipher_list_by_id, str, s->cert);
2421 /* see comment in SSL_CTX_set_cipher_list */
2424 else if (sk_SSL_CIPHER_num(sk) == 0) {
2425 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2431 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2434 STACK_OF(SSL_CIPHER) *sk;
2435 const SSL_CIPHER *c;
2438 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2442 sk = s->session->ciphers;
2444 if (sk_SSL_CIPHER_num(sk) == 0)
2447 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2450 c = sk_SSL_CIPHER_value(sk, i);
2451 n = strlen(c->name);
2458 memcpy(p, c->name, n + 1);
2467 /** return a servername extension value if provided in Client Hello, or NULL.
2468 * So far, only host_name types are defined (RFC 3546).
2471 const char *SSL_get_servername(const SSL *s, const int type)
2473 if (type != TLSEXT_NAMETYPE_host_name)
2476 return s->session && !s->ext.hostname ?
2477 s->session->ext.hostname : s->ext.hostname;
2480 int SSL_get_servername_type(const SSL *s)
2483 && (!s->ext.hostname ? s->session->
2484 ext.hostname : s->ext.hostname))
2485 return TLSEXT_NAMETYPE_host_name;
2490 * SSL_select_next_proto implements the standard protocol selection. It is
2491 * expected that this function is called from the callback set by
2492 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2493 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2494 * not included in the length. A byte string of length 0 is invalid. No byte
2495 * string may be truncated. The current, but experimental algorithm for
2496 * selecting the protocol is: 1) If the server doesn't support NPN then this
2497 * is indicated to the callback. In this case, the client application has to
2498 * abort the connection or have a default application level protocol. 2) If
2499 * the server supports NPN, but advertises an empty list then the client
2500 * selects the first protocol in its list, but indicates via the API that this
2501 * fallback case was enacted. 3) Otherwise, the client finds the first
2502 * protocol in the server's list that it supports and selects this protocol.
2503 * This is because it's assumed that the server has better information about
2504 * which protocol a client should use. 4) If the client doesn't support any
2505 * of the server's advertised protocols, then this is treated the same as
2506 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2507 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2509 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2510 const unsigned char *server,
2511 unsigned int server_len,
2512 const unsigned char *client, unsigned int client_len)
2515 const unsigned char *result;
2516 int status = OPENSSL_NPN_UNSUPPORTED;
2519 * For each protocol in server preference order, see if we support it.
2521 for (i = 0; i < server_len;) {
2522 for (j = 0; j < client_len;) {
2523 if (server[i] == client[j] &&
2524 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2525 /* We found a match */
2526 result = &server[i];
2527 status = OPENSSL_NPN_NEGOTIATED;
2537 /* There's no overlap between our protocols and the server's list. */
2539 status = OPENSSL_NPN_NO_OVERLAP;
2542 *out = (unsigned char *)result + 1;
2543 *outlen = result[0];
2547 #ifndef OPENSSL_NO_NEXTPROTONEG
2549 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2550 * client's requested protocol for this connection and returns 0. If the
2551 * client didn't request any protocol, then *data is set to NULL. Note that
2552 * the client can request any protocol it chooses. The value returned from
2553 * this function need not be a member of the list of supported protocols
2554 * provided by the callback.
2556 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2563 *len = (unsigned int)s->ext.npn_len;
2568 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2569 * a TLS server needs a list of supported protocols for Next Protocol
2570 * Negotiation. The returned list must be in wire format. The list is
2571 * returned by setting |out| to point to it and |outlen| to its length. This
2572 * memory will not be modified, but one should assume that the SSL* keeps a
2573 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2574 * wishes to advertise. Otherwise, no such extension will be included in the
2577 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2578 SSL_CTX_npn_advertised_cb_func cb,
2581 ctx->ext.npn_advertised_cb = cb;
2582 ctx->ext.npn_advertised_cb_arg = arg;
2586 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2587 * client needs to select a protocol from the server's provided list. |out|
2588 * must be set to point to the selected protocol (which may be within |in|).
2589 * The length of the protocol name must be written into |outlen|. The
2590 * server's advertised protocols are provided in |in| and |inlen|. The
2591 * callback can assume that |in| is syntactically valid. The client must
2592 * select a protocol. It is fatal to the connection if this callback returns
2593 * a value other than SSL_TLSEXT_ERR_OK.
2595 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2596 SSL_CTX_npn_select_cb_func cb,
2599 ctx->ext.npn_select_cb = cb;
2600 ctx->ext.npn_select_cb_arg = arg;
2605 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2606 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2607 * length-prefixed strings). Returns 0 on success.
2609 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2610 unsigned int protos_len)
2612 OPENSSL_free(ctx->ext.alpn);
2613 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2614 if (ctx->ext.alpn == NULL) {
2615 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2618 ctx->ext.alpn_len = protos_len;
2624 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2625 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2626 * length-prefixed strings). Returns 0 on success.
2628 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2629 unsigned int protos_len)
2631 OPENSSL_free(ssl->ext.alpn);
2632 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2633 if (ssl->ext.alpn == NULL) {
2634 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2637 ssl->ext.alpn_len = protos_len;
2643 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2644 * called during ClientHello processing in order to select an ALPN protocol
2645 * from the client's list of offered protocols.
2647 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2648 SSL_CTX_alpn_select_cb_func cb,
2651 ctx->ext.alpn_select_cb = cb;
2652 ctx->ext.alpn_select_cb_arg = arg;
2656 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2657 * On return it sets |*data| to point to |*len| bytes of protocol name
2658 * (not including the leading length-prefix byte). If the server didn't
2659 * respond with a negotiated protocol then |*len| will be zero.
2661 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2666 *data = ssl->s3->alpn_selected;
2670 *len = (unsigned int)ssl->s3->alpn_selected_len;
2673 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2674 const char *label, size_t llen,
2675 const unsigned char *context, size_t contextlen,
2678 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2681 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2683 contextlen, use_context);
2686 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2688 const unsigned char *session_id = a->session_id;
2690 unsigned char tmp_storage[4];
2692 if (a->session_id_length < sizeof(tmp_storage)) {
2693 memset(tmp_storage, 0, sizeof(tmp_storage));
2694 memcpy(tmp_storage, a->session_id, a->session_id_length);
2695 session_id = tmp_storage;
2699 ((unsigned long)session_id[0]) |
2700 ((unsigned long)session_id[1] << 8L) |
2701 ((unsigned long)session_id[2] << 16L) |
2702 ((unsigned long)session_id[3] << 24L);
2707 * NB: If this function (or indeed the hash function which uses a sort of
2708 * coarser function than this one) is changed, ensure
2709 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2710 * being able to construct an SSL_SESSION that will collide with any existing
2711 * session with a matching session ID.
2713 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2715 if (a->ssl_version != b->ssl_version)
2717 if (a->session_id_length != b->session_id_length)
2719 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2723 * These wrapper functions should remain rather than redeclaring
2724 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2725 * variable. The reason is that the functions aren't static, they're exposed
2729 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2731 SSL_CTX *ret = NULL;
2734 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2738 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2741 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2742 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2745 ret = OPENSSL_zalloc(sizeof(*ret));
2750 ret->min_proto_version = 0;
2751 ret->max_proto_version = 0;
2752 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2753 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2754 /* We take the system default. */
2755 ret->session_timeout = meth->get_timeout();
2756 ret->references = 1;
2757 ret->lock = CRYPTO_THREAD_lock_new();
2758 if (ret->lock == NULL) {
2759 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2763 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2764 ret->verify_mode = SSL_VERIFY_NONE;
2765 if ((ret->cert = ssl_cert_new()) == NULL)
2768 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2769 if (ret->sessions == NULL)
2771 ret->cert_store = X509_STORE_new();
2772 if (ret->cert_store == NULL)
2774 #ifndef OPENSSL_NO_CT
2775 ret->ctlog_store = CTLOG_STORE_new();
2776 if (ret->ctlog_store == NULL)
2779 if (!ssl_create_cipher_list(ret->method,
2780 &ret->cipher_list, &ret->cipher_list_by_id,
2781 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2782 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2783 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2787 ret->param = X509_VERIFY_PARAM_new();
2788 if (ret->param == NULL)
2791 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2792 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2795 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2796 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2800 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2803 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2806 /* No compression for DTLS */
2807 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2808 ret->comp_methods = SSL_COMP_get_compression_methods();
2810 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2811 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2813 /* Setup RFC5077 ticket keys */
2814 if ((RAND_bytes(ret->ext.tick_key_name,
2815 sizeof(ret->ext.tick_key_name)) <= 0)
2816 || (RAND_bytes(ret->ext.tick_hmac_key,
2817 sizeof(ret->ext.tick_hmac_key)) <= 0)
2818 || (RAND_bytes(ret->ext.tick_aes_key,
2819 sizeof(ret->ext.tick_aes_key)) <= 0))
2820 ret->options |= SSL_OP_NO_TICKET;
2822 #ifndef OPENSSL_NO_SRP
2823 if (!SSL_CTX_SRP_CTX_init(ret))
2826 #ifndef OPENSSL_NO_ENGINE
2827 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2828 # define eng_strx(x) #x
2829 # define eng_str(x) eng_strx(x)
2830 /* Use specific client engine automatically... ignore errors */
2833 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2836 ENGINE_load_builtin_engines();
2837 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2839 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2845 * Default is to connect to non-RI servers. When RI is more widely
2846 * deployed might change this.
2848 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2850 * Disable compression by default to prevent CRIME. Applications can
2851 * re-enable compression by configuring
2852 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2853 * or by using the SSL_CONF library.
2855 ret->options |= SSL_OP_NO_COMPRESSION;
2857 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2860 * Default max early data is a fully loaded single record. Could be split
2861 * across multiple records in practice
2863 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2867 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2873 int SSL_CTX_up_ref(SSL_CTX *ctx)
2877 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2880 REF_PRINT_COUNT("SSL_CTX", ctx);
2881 REF_ASSERT_ISNT(i < 2);
2882 return ((i > 1) ? 1 : 0);
2885 void SSL_CTX_free(SSL_CTX *a)
2892 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2893 REF_PRINT_COUNT("SSL_CTX", a);
2896 REF_ASSERT_ISNT(i < 0);
2898 X509_VERIFY_PARAM_free(a->param);
2899 dane_ctx_final(&a->dane);
2902 * Free internal session cache. However: the remove_cb() may reference
2903 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2904 * after the sessions were flushed.
2905 * As the ex_data handling routines might also touch the session cache,
2906 * the most secure solution seems to be: empty (flush) the cache, then
2907 * free ex_data, then finally free the cache.
2908 * (See ticket [openssl.org #212].)
2910 if (a->sessions != NULL)
2911 SSL_CTX_flush_sessions(a, 0);
2913 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2914 lh_SSL_SESSION_free(a->sessions);
2915 X509_STORE_free(a->cert_store);
2916 #ifndef OPENSSL_NO_CT
2917 CTLOG_STORE_free(a->ctlog_store);
2919 sk_SSL_CIPHER_free(a->cipher_list);
2920 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2921 ssl_cert_free(a->cert);
2922 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2923 sk_X509_pop_free(a->extra_certs, X509_free);
2924 a->comp_methods = NULL;
2925 #ifndef OPENSSL_NO_SRTP
2926 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2928 #ifndef OPENSSL_NO_SRP
2929 SSL_CTX_SRP_CTX_free(a);
2931 #ifndef OPENSSL_NO_ENGINE
2932 ENGINE_finish(a->client_cert_engine);
2935 #ifndef OPENSSL_NO_EC
2936 OPENSSL_free(a->ext.ecpointformats);
2937 OPENSSL_free(a->ext.supportedgroups);
2939 OPENSSL_free(a->ext.alpn);
2941 CRYPTO_THREAD_lock_free(a->lock);
2946 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2948 ctx->default_passwd_callback = cb;
2951 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2953 ctx->default_passwd_callback_userdata = u;
2956 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2958 return ctx->default_passwd_callback;
2961 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2963 return ctx->default_passwd_callback_userdata;
2966 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2968 s->default_passwd_callback = cb;
2971 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2973 s->default_passwd_callback_userdata = u;
2976 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2978 return s->default_passwd_callback;
2981 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2983 return s->default_passwd_callback_userdata;
2986 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2987 int (*cb) (X509_STORE_CTX *, void *),
2990 ctx->app_verify_callback = cb;
2991 ctx->app_verify_arg = arg;
2994 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2995 int (*cb) (int, X509_STORE_CTX *))
2997 ctx->verify_mode = mode;
2998 ctx->default_verify_callback = cb;
3001 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3003 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3006 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3008 ssl_cert_set_cert_cb(c->cert, cb, arg);
3011 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3013 ssl_cert_set_cert_cb(s->cert, cb, arg);
3016 void ssl_set_masks(SSL *s)
3019 uint32_t *pvalid = s->s3->tmp.valid_flags;
3020 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3021 unsigned long mask_k, mask_a;
3022 #ifndef OPENSSL_NO_EC
3023 int have_ecc_cert, ecdsa_ok;
3028 #ifndef OPENSSL_NO_DH
3029 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3034 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3035 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3036 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3037 #ifndef OPENSSL_NO_EC
3038 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3044 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3045 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3048 #ifndef OPENSSL_NO_GOST
3049 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3050 mask_k |= SSL_kGOST;
3051 mask_a |= SSL_aGOST12;
3053 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3054 mask_k |= SSL_kGOST;
3055 mask_a |= SSL_aGOST12;
3057 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3058 mask_k |= SSL_kGOST;
3059 mask_a |= SSL_aGOST01;
3069 if (rsa_enc || rsa_sign) {
3077 mask_a |= SSL_aNULL;
3080 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3081 * depending on the key usage extension.
3083 #ifndef OPENSSL_NO_EC
3084 if (have_ecc_cert) {
3086 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3087 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3088 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3091 mask_a |= SSL_aECDSA;
3093 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3094 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3095 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3096 && TLS1_get_version(s) == TLS1_2_VERSION)
3097 mask_a |= SSL_aECDSA;
3100 #ifndef OPENSSL_NO_EC
3101 mask_k |= SSL_kECDHE;
3104 #ifndef OPENSSL_NO_PSK
3107 if (mask_k & SSL_kRSA)
3108 mask_k |= SSL_kRSAPSK;
3109 if (mask_k & SSL_kDHE)
3110 mask_k |= SSL_kDHEPSK;
3111 if (mask_k & SSL_kECDHE)
3112 mask_k |= SSL_kECDHEPSK;
3115 s->s3->tmp.mask_k = mask_k;
3116 s->s3->tmp.mask_a = mask_a;
3119 #ifndef OPENSSL_NO_EC
3121 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3123 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3124 /* key usage, if present, must allow signing */
3125 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3126 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3127 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3131 return 1; /* all checks are ok */
3136 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3137 size_t *serverinfo_length)
3139 CERT_PKEY *cpk = s->s3->tmp.cert;
3140 *serverinfo_length = 0;
3142 if (cpk == NULL || cpk->serverinfo == NULL)
3145 *serverinfo = cpk->serverinfo;
3146 *serverinfo_length = cpk->serverinfo_length;
3150 void ssl_update_cache(SSL *s, int mode)
3155 * If the session_id_length is 0, we are not supposed to cache it, and it
3156 * would be rather hard to do anyway :-)
3158 if (s->session->session_id_length == 0)
3161 i = s->session_ctx->session_cache_mode;
3162 if ((i & mode) && (!s->hit)
3163 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
3164 || SSL_CTX_add_session(s->session_ctx, s->session))
3165 && (s->session_ctx->new_session_cb != NULL)) {
3166 SSL_SESSION_up_ref(s->session);
3167 if (!s->session_ctx->new_session_cb(s, s->session))
3168 SSL_SESSION_free(s->session);
3171 /* auto flush every 255 connections */
3172 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3173 if ((((mode & SSL_SESS_CACHE_CLIENT)
3174 ? s->session_ctx->stats.sess_connect_good
3175 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3176 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3181 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3186 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3191 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3195 if (s->method != meth) {
3196 const SSL_METHOD *sm = s->method;
3197 int (*hf) (SSL *) = s->handshake_func;
3199 if (sm->version == meth->version)
3204 ret = s->method->ssl_new(s);
3207 if (hf == sm->ssl_connect)
3208 s->handshake_func = meth->ssl_connect;
3209 else if (hf == sm->ssl_accept)
3210 s->handshake_func = meth->ssl_accept;
3215 int SSL_get_error(const SSL *s, int i)
3222 return (SSL_ERROR_NONE);
3225 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3226 * where we do encode the error
3228 if ((l = ERR_peek_error()) != 0) {
3229 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3230 return (SSL_ERROR_SYSCALL);
3232 return (SSL_ERROR_SSL);
3235 if (SSL_want_read(s)) {
3236 bio = SSL_get_rbio(s);
3237 if (BIO_should_read(bio))
3238 return (SSL_ERROR_WANT_READ);
3239 else if (BIO_should_write(bio))
3241 * This one doesn't make too much sense ... We never try to write
3242 * to the rbio, and an application program where rbio and wbio
3243 * are separate couldn't even know what it should wait for.
3244 * However if we ever set s->rwstate incorrectly (so that we have
3245 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3246 * wbio *are* the same, this test works around that bug; so it
3247 * might be safer to keep it.
3249 return (SSL_ERROR_WANT_WRITE);
3250 else if (BIO_should_io_special(bio)) {
3251 reason = BIO_get_retry_reason(bio);
3252 if (reason == BIO_RR_CONNECT)
3253 return (SSL_ERROR_WANT_CONNECT);
3254 else if (reason == BIO_RR_ACCEPT)
3255 return (SSL_ERROR_WANT_ACCEPT);
3257 return (SSL_ERROR_SYSCALL); /* unknown */
3261 if (SSL_want_write(s)) {
3262 /* Access wbio directly - in order to use the buffered bio if present */
3264 if (BIO_should_write(bio))
3265 return (SSL_ERROR_WANT_WRITE);
3266 else if (BIO_should_read(bio))
3268 * See above (SSL_want_read(s) with BIO_should_write(bio))
3270 return (SSL_ERROR_WANT_READ);
3271 else if (BIO_should_io_special(bio)) {
3272 reason = BIO_get_retry_reason(bio);
3273 if (reason == BIO_RR_CONNECT)
3274 return (SSL_ERROR_WANT_CONNECT);
3275 else if (reason == BIO_RR_ACCEPT)
3276 return (SSL_ERROR_WANT_ACCEPT);
3278 return (SSL_ERROR_SYSCALL);
3281 if (SSL_want_x509_lookup(s))
3282 return (SSL_ERROR_WANT_X509_LOOKUP);
3283 if (SSL_want_async(s))
3284 return SSL_ERROR_WANT_ASYNC;
3285 if (SSL_want_async_job(s))
3286 return SSL_ERROR_WANT_ASYNC_JOB;
3287 if (SSL_want_early(s))
3288 return SSL_ERROR_WANT_EARLY;
3290 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3291 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3292 return (SSL_ERROR_ZERO_RETURN);
3294 return (SSL_ERROR_SYSCALL);
3297 static int ssl_do_handshake_intern(void *vargs)
3299 struct ssl_async_args *args;
3302 args = (struct ssl_async_args *)vargs;
3305 return s->handshake_func(s);
3308 int SSL_do_handshake(SSL *s)
3312 if (s->handshake_func == NULL) {
3313 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3317 ossl_statem_check_finish_init(s, -1);
3319 s->method->ssl_renegotiate_check(s, 0);
3321 if (SSL_in_init(s) || SSL_in_before(s)) {
3322 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3323 struct ssl_async_args args;
3327 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3329 ret = s->handshake_func(s);
3335 void SSL_set_accept_state(SSL *s)
3339 ossl_statem_clear(s);
3340 s->handshake_func = s->method->ssl_accept;
3344 void SSL_set_connect_state(SSL *s)
3348 ossl_statem_clear(s);
3349 s->handshake_func = s->method->ssl_connect;
3353 int ssl_undefined_function(SSL *s)
3355 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3359 int ssl_undefined_void_function(void)
3361 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3362 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3366 int ssl_undefined_const_function(const SSL *s)
3371 const SSL_METHOD *ssl_bad_method(int ver)
3373 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3377 const char *ssl_protocol_to_string(int version)
3381 case TLS1_3_VERSION:
3384 case TLS1_2_VERSION:
3387 case TLS1_1_VERSION:
3402 case DTLS1_2_VERSION:
3410 const char *SSL_get_version(const SSL *s)
3412 return ssl_protocol_to_string(s->version);
3415 SSL *SSL_dup(SSL *s)
3417 STACK_OF(X509_NAME) *sk;
3422 /* If we're not quiescent, just up_ref! */
3423 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3424 CRYPTO_UP_REF(&s->references, &i, s->lock);
3429 * Otherwise, copy configuration state, and session if set.
3431 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3434 if (s->session != NULL) {
3436 * Arranges to share the same session via up_ref. This "copies"
3437 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3439 if (!SSL_copy_session_id(ret, s))
3443 * No session has been established yet, so we have to expect that
3444 * s->cert or ret->cert will be changed later -- they should not both
3445 * point to the same object, and thus we can't use
3446 * SSL_copy_session_id.
3448 if (!SSL_set_ssl_method(ret, s->method))
3451 if (s->cert != NULL) {
3452 ssl_cert_free(ret->cert);
3453 ret->cert = ssl_cert_dup(s->cert);
3454 if (ret->cert == NULL)
3458 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3459 (int)s->sid_ctx_length))
3463 if (!ssl_dane_dup(ret, s))
3465 ret->version = s->version;
3466 ret->options = s->options;
3467 ret->mode = s->mode;
3468 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3469 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3470 ret->msg_callback = s->msg_callback;
3471 ret->msg_callback_arg = s->msg_callback_arg;
3472 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3473 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3474 ret->generate_session_id = s->generate_session_id;
3476 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3478 /* copy app data, a little dangerous perhaps */
3479 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3482 /* setup rbio, and wbio */
3483 if (s->rbio != NULL) {
3484 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3487 if (s->wbio != NULL) {
3488 if (s->wbio != s->rbio) {
3489 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3492 BIO_up_ref(ret->rbio);
3493 ret->wbio = ret->rbio;
3497 ret->server = s->server;
3498 if (s->handshake_func) {
3500 SSL_set_accept_state(ret);
3502 SSL_set_connect_state(ret);
3504 ret->shutdown = s->shutdown;
3507 ret->default_passwd_callback = s->default_passwd_callback;
3508 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3510 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3512 /* dup the cipher_list and cipher_list_by_id stacks */
3513 if (s->cipher_list != NULL) {
3514 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3517 if (s->cipher_list_by_id != NULL)
3518 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3522 /* Dup the client_CA list */
3523 if (s->ca_names != NULL) {
3524 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3527 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3528 xn = sk_X509_NAME_value(sk, i);
3529 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3542 void ssl_clear_cipher_ctx(SSL *s)
3544 if (s->enc_read_ctx != NULL) {
3545 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3546 s->enc_read_ctx = NULL;
3548 if (s->enc_write_ctx != NULL) {
3549 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3550 s->enc_write_ctx = NULL;
3552 #ifndef OPENSSL_NO_COMP
3553 COMP_CTX_free(s->expand);
3555 COMP_CTX_free(s->compress);
3560 X509 *SSL_get_certificate(const SSL *s)
3562 if (s->cert != NULL)
3563 return (s->cert->key->x509);
3568 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3570 if (s->cert != NULL)
3571 return (s->cert->key->privatekey);
3576 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3578 if (ctx->cert != NULL)
3579 return ctx->cert->key->x509;
3584 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3586 if (ctx->cert != NULL)
3587 return ctx->cert->key->privatekey;
3592 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3594 if ((s->session != NULL) && (s->session->cipher != NULL))
3595 return (s->session->cipher);
3599 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3601 #ifndef OPENSSL_NO_COMP
3602 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3608 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3610 #ifndef OPENSSL_NO_COMP
3611 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3617 int ssl_init_wbio_buffer(SSL *s)
3621 if (s->bbio != NULL) {
3622 /* Already buffered. */
3626 bbio = BIO_new(BIO_f_buffer());
3627 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3629 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3633 s->wbio = BIO_push(bbio, s->wbio);
3638 int ssl_free_wbio_buffer(SSL *s)
3640 /* callers ensure s is never null */
3641 if (s->bbio == NULL)
3644 s->wbio = BIO_pop(s->wbio);
3645 if (!ossl_assert(s->wbio != NULL))
3653 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3655 ctx->quiet_shutdown = mode;
3658 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3660 return (ctx->quiet_shutdown);
3663 void SSL_set_quiet_shutdown(SSL *s, int mode)
3665 s->quiet_shutdown = mode;
3668 int SSL_get_quiet_shutdown(const SSL *s)
3670 return (s->quiet_shutdown);
3673 void SSL_set_shutdown(SSL *s, int mode)
3678 int SSL_get_shutdown(const SSL *s)
3683 int SSL_version(const SSL *s)
3688 int SSL_client_version(const SSL *s)
3690 return s->client_version;
3693 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3698 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3701 if (ssl->ctx == ctx)
3704 ctx = ssl->session_ctx;
3705 new_cert = ssl_cert_dup(ctx->cert);
3706 if (new_cert == NULL) {
3710 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3711 ssl_cert_free(new_cert);
3715 ssl_cert_free(ssl->cert);
3716 ssl->cert = new_cert;
3719 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3720 * so setter APIs must prevent invalid lengths from entering the system.
3722 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3726 * If the session ID context matches that of the parent SSL_CTX,
3727 * inherit it from the new SSL_CTX as well. If however the context does
3728 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3729 * leave it unchanged.
3731 if ((ssl->ctx != NULL) &&
3732 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3733 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3734 ssl->sid_ctx_length = ctx->sid_ctx_length;
3735 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3738 SSL_CTX_up_ref(ctx);
3739 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3745 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3747 return (X509_STORE_set_default_paths(ctx->cert_store));
3750 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3752 X509_LOOKUP *lookup;
3754 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3757 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3759 /* Clear any errors if the default directory does not exist */
3765 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3767 X509_LOOKUP *lookup;
3769 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3773 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3775 /* Clear any errors if the default file does not exist */
3781 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3784 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3787 void SSL_set_info_callback(SSL *ssl,
3788 void (*cb) (const SSL *ssl, int type, int val))
3790 ssl->info_callback = cb;
3794 * One compiler (Diab DCC) doesn't like argument names in returned function
3797 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3800 return ssl->info_callback;
3803 void SSL_set_verify_result(SSL *ssl, long arg)
3805 ssl->verify_result = arg;
3808 long SSL_get_verify_result(const SSL *ssl)
3810 return (ssl->verify_result);
3813 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3816 return sizeof(ssl->s3->client_random);
3817 if (outlen > sizeof(ssl->s3->client_random))
3818 outlen = sizeof(ssl->s3->client_random);
3819 memcpy(out, ssl->s3->client_random, outlen);
3823 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3826 return sizeof(ssl->s3->server_random);
3827 if (outlen > sizeof(ssl->s3->server_random))
3828 outlen = sizeof(ssl->s3->server_random);
3829 memcpy(out, ssl->s3->server_random, outlen);
3833 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3834 unsigned char *out, size_t outlen)
3837 return session->master_key_length;
3838 if (outlen > session->master_key_length)
3839 outlen = session->master_key_length;
3840 memcpy(out, session->master_key, outlen);
3844 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3847 if (len > sizeof(sess->master_key))
3850 memcpy(sess->master_key, in, len);
3851 sess->master_key_length = len;
3856 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3858 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3861 void *SSL_get_ex_data(const SSL *s, int idx)
3863 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3866 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3868 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3871 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3873 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3876 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3878 return (ctx->cert_store);
3881 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3883 X509_STORE_free(ctx->cert_store);
3884 ctx->cert_store = store;
3887 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3890 X509_STORE_up_ref(store);
3891 SSL_CTX_set_cert_store(ctx, store);
3894 int SSL_want(const SSL *s)
3896 return (s->rwstate);
3900 * \brief Set the callback for generating temporary DH keys.
3901 * \param ctx the SSL context.
3902 * \param dh the callback
3905 #ifndef OPENSSL_NO_DH
3906 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3907 DH *(*dh) (SSL *ssl, int is_export,
3910 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3913 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3916 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3920 #ifndef OPENSSL_NO_PSK
3921 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3923 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3924 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3927 OPENSSL_free(ctx->cert->psk_identity_hint);
3928 if (identity_hint != NULL) {
3929 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3930 if (ctx->cert->psk_identity_hint == NULL)
3933 ctx->cert->psk_identity_hint = NULL;
3937 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3942 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3943 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3946 OPENSSL_free(s->cert->psk_identity_hint);
3947 if (identity_hint != NULL) {
3948 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3949 if (s->cert->psk_identity_hint == NULL)
3952 s->cert->psk_identity_hint = NULL;
3956 const char *SSL_get_psk_identity_hint(const SSL *s)
3958 if (s == NULL || s->session == NULL)
3960 return (s->session->psk_identity_hint);
3963 const char *SSL_get_psk_identity(const SSL *s)
3965 if (s == NULL || s->session == NULL)
3967 return (s->session->psk_identity);
3970 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
3972 s->psk_client_callback = cb;
3975 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
3977 ctx->psk_client_callback = cb;
3980 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
3982 s->psk_server_callback = cb;
3985 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
3987 ctx->psk_server_callback = cb;
3991 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
3993 s->psk_find_session_cb = cb;
3996 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
3997 SSL_psk_find_session_cb_func cb)
3999 ctx->psk_find_session_cb = cb;
4002 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4004 s->psk_use_session_cb = cb;
4007 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4008 SSL_psk_use_session_cb_func cb)
4010 ctx->psk_use_session_cb = cb;
4013 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4014 void (*cb) (int write_p, int version,
4015 int content_type, const void *buf,
4016 size_t len, SSL *ssl, void *arg))
4018 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4021 void SSL_set_msg_callback(SSL *ssl,
4022 void (*cb) (int write_p, int version,
4023 int content_type, const void *buf,
4024 size_t len, SSL *ssl, void *arg))
4026 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4029 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4030 int (*cb) (SSL *ssl,
4034 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4035 (void (*)(void))cb);
4038 void SSL_set_not_resumable_session_callback(SSL *ssl,
4039 int (*cb) (SSL *ssl,
4040 int is_forward_secure))
4042 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4043 (void (*)(void))cb);
4046 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4047 size_t (*cb) (SSL *ssl, int type,
4048 size_t len, void *arg))
4050 ctx->record_padding_cb = cb;
4053 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4055 ctx->record_padding_arg = arg;
4058 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4060 return ctx->record_padding_arg;
4063 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4065 /* block size of 0 or 1 is basically no padding */
4066 if (block_size == 1)
4067 ctx->block_padding = 0;
4068 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4069 ctx->block_padding = block_size;
4075 void SSL_set_record_padding_callback(SSL *ssl,
4076 size_t (*cb) (SSL *ssl, int type,
4077 size_t len, void *arg))
4079 ssl->record_padding_cb = cb;
4082 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4084 ssl->record_padding_arg = arg;
4087 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4089 return ssl->record_padding_arg;
4092 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4094 /* block size of 0 or 1 is basically no padding */
4095 if (block_size == 1)
4096 ssl->block_padding = 0;
4097 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4098 ssl->block_padding = block_size;
4105 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4106 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4107 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4108 * Returns the newly allocated ctx;
4111 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4113 ssl_clear_hash_ctx(hash);
4114 *hash = EVP_MD_CTX_new();
4115 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4116 EVP_MD_CTX_free(*hash);
4123 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4126 EVP_MD_CTX_free(*hash);
4130 /* Retrieve handshake hashes */
4131 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4134 EVP_MD_CTX *ctx = NULL;
4135 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4136 int hashleni = EVP_MD_CTX_size(hdgst);
4139 if (hashleni < 0 || (size_t)hashleni > outlen)
4142 ctx = EVP_MD_CTX_new();
4146 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4147 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4150 *hashlen = hashleni;
4154 EVP_MD_CTX_free(ctx);
4158 int SSL_session_reused(SSL *s)
4163 int SSL_is_server(const SSL *s)
4168 #if OPENSSL_API_COMPAT < 0x10100000L
4169 void SSL_set_debug(SSL *s, int debug)
4171 /* Old function was do-nothing anyway... */
4177 void SSL_set_security_level(SSL *s, int level)
4179 s->cert->sec_level = level;
4182 int SSL_get_security_level(const SSL *s)
4184 return s->cert->sec_level;
4187 void SSL_set_security_callback(SSL *s,
4188 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4189 int op, int bits, int nid,
4190 void *other, void *ex))
4192 s->cert->sec_cb = cb;
4195 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4196 const SSL_CTX *ctx, int op,
4197 int bits, int nid, void *other,
4199 return s->cert->sec_cb;
4202 void SSL_set0_security_ex_data(SSL *s, void *ex)
4204 s->cert->sec_ex = ex;
4207 void *SSL_get0_security_ex_data(const SSL *s)
4209 return s->cert->sec_ex;
4212 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4214 ctx->cert->sec_level = level;
4217 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4219 return ctx->cert->sec_level;
4222 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4223 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4224 int op, int bits, int nid,
4225 void *other, void *ex))
4227 ctx->cert->sec_cb = cb;
4230 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4236 return ctx->cert->sec_cb;
4239 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4241 ctx->cert->sec_ex = ex;
4244 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4246 return ctx->cert->sec_ex;
4250 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4251 * can return unsigned long, instead of the generic long return value from the
4252 * control interface.
4254 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4256 return ctx->options;
4259 unsigned long SSL_get_options(const SSL *s)
4264 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4266 return ctx->options |= op;
4269 unsigned long SSL_set_options(SSL *s, unsigned long op)
4271 return s->options |= op;
4274 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4276 return ctx->options &= ~op;
4279 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4281 return s->options &= ~op;
4284 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4286 return s->verified_chain;
4289 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4291 #ifndef OPENSSL_NO_CT
4294 * Moves SCTs from the |src| stack to the |dst| stack.
4295 * The source of each SCT will be set to |origin|.
4296 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4298 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4300 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4301 sct_source_t origin)
4307 *dst = sk_SCT_new_null();
4309 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4314 while ((sct = sk_SCT_pop(src)) != NULL) {
4315 if (SCT_set_source(sct, origin) != 1)
4318 if (sk_SCT_push(*dst, sct) <= 0)
4326 sk_SCT_push(src, sct); /* Put the SCT back */
4331 * Look for data collected during ServerHello and parse if found.
4332 * Returns the number of SCTs extracted.
4334 static int ct_extract_tls_extension_scts(SSL *s)
4336 int scts_extracted = 0;
4338 if (s->ext.scts != NULL) {
4339 const unsigned char *p = s->ext.scts;
4340 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4342 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4344 SCT_LIST_free(scts);
4347 return scts_extracted;
4351 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4352 * contains an SCT X509 extension. They will be stored in |s->scts|.
4354 * - The number of SCTs extracted, assuming an OCSP response exists.
4355 * - 0 if no OCSP response exists or it contains no SCTs.
4356 * - A negative integer if an error occurs.
4358 static int ct_extract_ocsp_response_scts(SSL *s)
4360 # ifndef OPENSSL_NO_OCSP
4361 int scts_extracted = 0;
4362 const unsigned char *p;
4363 OCSP_BASICRESP *br = NULL;
4364 OCSP_RESPONSE *rsp = NULL;
4365 STACK_OF(SCT) *scts = NULL;
4368 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4371 p = s->ext.ocsp.resp;
4372 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4376 br = OCSP_response_get1_basic(rsp);
4380 for (i = 0; i < OCSP_resp_count(br); ++i) {
4381 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4387 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4389 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4390 if (scts_extracted < 0)
4394 SCT_LIST_free(scts);
4395 OCSP_BASICRESP_free(br);
4396 OCSP_RESPONSE_free(rsp);
4397 return scts_extracted;
4399 /* Behave as if no OCSP response exists */
4405 * Attempts to extract SCTs from the peer certificate.
4406 * Return the number of SCTs extracted, or a negative integer if an error
4409 static int ct_extract_x509v3_extension_scts(SSL *s)
4411 int scts_extracted = 0;
4412 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4415 STACK_OF(SCT) *scts =
4416 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4419 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4421 SCT_LIST_free(scts);
4424 return scts_extracted;
4428 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4429 * response (if it exists) and X509v3 extensions in the certificate.
4430 * Returns NULL if an error occurs.
4432 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4434 if (!s->scts_parsed) {
4435 if (ct_extract_tls_extension_scts(s) < 0 ||
4436 ct_extract_ocsp_response_scts(s) < 0 ||
4437 ct_extract_x509v3_extension_scts(s) < 0)
4447 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4448 const STACK_OF(SCT) *scts, void *unused_arg)
4453 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4454 const STACK_OF(SCT) *scts, void *unused_arg)
4456 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4459 for (i = 0; i < count; ++i) {
4460 SCT *sct = sk_SCT_value(scts, i);
4461 int status = SCT_get_validation_status(sct);
4463 if (status == SCT_VALIDATION_STATUS_VALID)
4466 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4470 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4474 * Since code exists that uses the custom extension handler for CT, look
4475 * for this and throw an error if they have already registered to use CT.
4477 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4478 TLSEXT_TYPE_signed_certificate_timestamp))
4480 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4481 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4485 if (callback != NULL) {
4487 * If we are validating CT, then we MUST accept SCTs served via OCSP
4489 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4493 s->ct_validation_callback = callback;
4494 s->ct_validation_callback_arg = arg;
4499 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4500 ssl_ct_validation_cb callback, void *arg)
4503 * Since code exists that uses the custom extension handler for CT, look for
4504 * this and throw an error if they have already registered to use CT.
4506 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4507 TLSEXT_TYPE_signed_certificate_timestamp))
4509 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4510 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4514 ctx->ct_validation_callback = callback;
4515 ctx->ct_validation_callback_arg = arg;
4519 int SSL_ct_is_enabled(const SSL *s)
4521 return s->ct_validation_callback != NULL;
4524 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4526 return ctx->ct_validation_callback != NULL;
4529 int ssl_validate_ct(SSL *s)
4532 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4534 SSL_DANE *dane = &s->dane;
4535 CT_POLICY_EVAL_CTX *ctx = NULL;
4536 const STACK_OF(SCT) *scts;
4539 * If no callback is set, the peer is anonymous, or its chain is invalid,
4540 * skip SCT validation - just return success. Applications that continue
4541 * handshakes without certificates, with unverified chains, or pinned leaf
4542 * certificates are outside the scope of the WebPKI and CT.
4544 * The above exclusions notwithstanding the vast majority of peers will
4545 * have rather ordinary certificate chains validated by typical
4546 * applications that perform certificate verification and therefore will
4547 * process SCTs when enabled.
4549 if (s->ct_validation_callback == NULL || cert == NULL ||
4550 s->verify_result != X509_V_OK ||
4551 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4555 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4556 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4558 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4559 switch (dane->mtlsa->usage) {
4560 case DANETLS_USAGE_DANE_TA:
4561 case DANETLS_USAGE_DANE_EE:
4566 ctx = CT_POLICY_EVAL_CTX_new();
4568 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4572 issuer = sk_X509_value(s->verified_chain, 1);
4573 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4574 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4575 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4576 CT_POLICY_EVAL_CTX_set_time(
4577 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4579 scts = SSL_get0_peer_scts(s);
4582 * This function returns success (> 0) only when all the SCTs are valid, 0
4583 * when some are invalid, and < 0 on various internal errors (out of
4584 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4585 * reason to abort the handshake, that decision is up to the callback.
4586 * Therefore, we error out only in the unexpected case that the return
4587 * value is negative.
4589 * XXX: One might well argue that the return value of this function is an
4590 * unfortunate design choice. Its job is only to determine the validation
4591 * status of each of the provided SCTs. So long as it correctly separates
4592 * the wheat from the chaff it should return success. Failure in this case
4593 * ought to correspond to an inability to carry out its duties.
4595 if (SCT_LIST_validate(scts, ctx) < 0) {
4596 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4600 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4602 ret = 0; /* This function returns 0 on failure */
4605 CT_POLICY_EVAL_CTX_free(ctx);
4607 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4608 * failure return code here. Also the application may wish the complete
4609 * the handshake, and then disconnect cleanly at a higher layer, after
4610 * checking the verification status of the completed connection.
4612 * We therefore force a certificate verification failure which will be
4613 * visible via SSL_get_verify_result() and cached as part of any resumed
4616 * Note: the permissive callback is for information gathering only, always
4617 * returns success, and does not affect verification status. Only the
4618 * strict callback or a custom application-specified callback can trigger
4619 * connection failure or record a verification error.
4622 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4626 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4628 switch (validation_mode) {
4630 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4632 case SSL_CT_VALIDATION_PERMISSIVE:
4633 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4634 case SSL_CT_VALIDATION_STRICT:
4635 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4639 int SSL_enable_ct(SSL *s, int validation_mode)
4641 switch (validation_mode) {
4643 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4645 case SSL_CT_VALIDATION_PERMISSIVE:
4646 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4647 case SSL_CT_VALIDATION_STRICT:
4648 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4652 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4654 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4657 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4659 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4662 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4664 CTLOG_STORE_free(ctx->ctlog_store);
4665 ctx->ctlog_store = logs;
4668 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4670 return ctx->ctlog_store;
4673 #endif /* OPENSSL_NO_CT */
4675 void SSL_CTX_set_early_cb(SSL_CTX *c, SSL_early_cb_fn cb, void *arg)
4678 c->early_cb_arg = arg;
4681 int SSL_early_isv2(SSL *s)
4683 if (s->clienthello == NULL)
4685 return s->clienthello->isv2;
4688 unsigned int SSL_early_get0_legacy_version(SSL *s)
4690 if (s->clienthello == NULL)
4692 return s->clienthello->legacy_version;
4695 size_t SSL_early_get0_random(SSL *s, const unsigned char **out)
4697 if (s->clienthello == NULL)
4700 *out = s->clienthello->random;
4701 return SSL3_RANDOM_SIZE;
4704 size_t SSL_early_get0_session_id(SSL *s, const unsigned char **out)
4706 if (s->clienthello == NULL)
4709 *out = s->clienthello->session_id;
4710 return s->clienthello->session_id_len;
4713 size_t SSL_early_get0_ciphers(SSL *s, const unsigned char **out)
4715 if (s->clienthello == NULL)
4718 *out = PACKET_data(&s->clienthello->ciphersuites);
4719 return PACKET_remaining(&s->clienthello->ciphersuites);
4722 size_t SSL_early_get0_compression_methods(SSL *s, const unsigned char **out)
4724 if (s->clienthello == NULL)
4727 *out = s->clienthello->compressions;
4728 return s->clienthello->compressions_len;
4731 int SSL_early_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4737 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4739 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4740 ext = s->clienthello->pre_proc_exts + i;
4744 present = OPENSSL_malloc(sizeof(*present) * num);
4745 if (present == NULL)
4747 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4748 ext = s->clienthello->pre_proc_exts + i;
4750 if (ext->received_order >= num)
4752 present[ext->received_order] = ext->type;
4759 OPENSSL_free(present);
4763 int SSL_early_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4769 if (s->clienthello == NULL)
4771 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4772 r = s->clienthello->pre_proc_exts + i;
4773 if (r->present && r->type == type) {
4775 *out = PACKET_data(&r->data);
4777 *outlen = PACKET_remaining(&r->data);
4784 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4786 ctx->keylog_callback = cb;
4789 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4791 return ctx->keylog_callback;
4794 static int nss_keylog_int(const char *prefix,
4796 const uint8_t *parameter_1,
4797 size_t parameter_1_len,
4798 const uint8_t *parameter_2,
4799 size_t parameter_2_len)
4802 char *cursor = NULL;
4807 if (ssl->ctx->keylog_callback == NULL) return 1;
4810 * Our output buffer will contain the following strings, rendered with
4811 * space characters in between, terminated by a NULL character: first the
4812 * prefix, then the first parameter, then the second parameter. The
4813 * meaning of each parameter depends on the specific key material being
4814 * logged. Note that the first and second parameters are encoded in
4815 * hexadecimal, so we need a buffer that is twice their lengths.
4817 prefix_len = strlen(prefix);
4818 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4819 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4820 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4824 strcpy(cursor, prefix);
4825 cursor += prefix_len;
4828 for (i = 0; i < parameter_1_len; i++) {
4829 sprintf(cursor, "%02x", parameter_1[i]);
4834 for (i = 0; i < parameter_2_len; i++) {
4835 sprintf(cursor, "%02x", parameter_2[i]);
4840 ssl->ctx->keylog_callback(ssl, (const char *)out);
4846 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4847 const uint8_t *encrypted_premaster,
4848 size_t encrypted_premaster_len,
4849 const uint8_t *premaster,
4850 size_t premaster_len)
4852 if (encrypted_premaster_len < 8) {
4853 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4857 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4858 return nss_keylog_int("RSA",
4860 encrypted_premaster,
4866 int ssl_log_secret(SSL *ssl,
4868 const uint8_t *secret,
4871 return nss_keylog_int(label,
4873 ssl->s3->client_random,
4879 #define SSLV2_CIPHER_LEN 3
4881 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4886 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4888 if (PACKET_remaining(cipher_suites) == 0) {
4889 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4890 *al = SSL_AD_ILLEGAL_PARAMETER;
4894 if (PACKET_remaining(cipher_suites) % n != 0) {
4895 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4896 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4897 *al = SSL_AD_DECODE_ERROR;
4901 OPENSSL_free(s->s3->tmp.ciphers_raw);
4902 s->s3->tmp.ciphers_raw = NULL;
4903 s->s3->tmp.ciphers_rawlen = 0;
4906 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4907 PACKET sslv2ciphers = *cipher_suites;
4908 unsigned int leadbyte;
4912 * We store the raw ciphers list in SSLv3+ format so we need to do some
4913 * preprocessing to convert the list first. If there are any SSLv2 only
4914 * ciphersuites with a non-zero leading byte then we are going to
4915 * slightly over allocate because we won't store those. But that isn't a
4918 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4919 s->s3->tmp.ciphers_raw = raw;
4921 *al = SSL_AD_INTERNAL_ERROR;
4924 for (s->s3->tmp.ciphers_rawlen = 0;
4925 PACKET_remaining(&sslv2ciphers) > 0;
4926 raw += TLS_CIPHER_LEN) {
4927 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4929 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4932 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4933 *al = SSL_AD_DECODE_ERROR;
4934 OPENSSL_free(s->s3->tmp.ciphers_raw);
4935 s->s3->tmp.ciphers_raw = NULL;
4936 s->s3->tmp.ciphers_rawlen = 0;
4940 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
4942 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
4943 &s->s3->tmp.ciphers_rawlen)) {
4944 *al = SSL_AD_INTERNAL_ERROR;
4952 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
4953 int isv2format, STACK_OF(SSL_CIPHER) **sk,
4954 STACK_OF(SSL_CIPHER) **scsvs)
4959 if (!PACKET_buf_init(&pkt, bytes, len))
4961 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
4964 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
4965 STACK_OF(SSL_CIPHER) **skp,
4966 STACK_OF(SSL_CIPHER) **scsvs_out,
4967 int sslv2format, int *al)
4969 const SSL_CIPHER *c;
4970 STACK_OF(SSL_CIPHER) *sk = NULL;
4971 STACK_OF(SSL_CIPHER) *scsvs = NULL;
4973 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4974 unsigned char cipher[SSLV2_CIPHER_LEN];
4976 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4978 if (PACKET_remaining(cipher_suites) == 0) {
4979 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
4980 *al = SSL_AD_ILLEGAL_PARAMETER;
4984 if (PACKET_remaining(cipher_suites) % n != 0) {
4985 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
4986 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4987 *al = SSL_AD_DECODE_ERROR;
4991 sk = sk_SSL_CIPHER_new_null();
4992 scsvs = sk_SSL_CIPHER_new_null();
4993 if (sk == NULL || scsvs == NULL) {
4994 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
4995 *al = SSL_AD_INTERNAL_ERROR;
4999 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5001 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5002 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5003 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5005 if (sslv2format && cipher[0] != '\0')
5008 /* For SSLv2-compat, ignore leading 0-byte. */
5009 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5011 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5012 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5013 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5014 *al = SSL_AD_INTERNAL_ERROR;
5019 if (PACKET_remaining(cipher_suites) > 0) {
5020 *al = SSL_AD_DECODE_ERROR;
5021 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5028 sk_SSL_CIPHER_free(sk);
5029 if (scsvs_out != NULL)
5032 sk_SSL_CIPHER_free(scsvs);
5035 sk_SSL_CIPHER_free(sk);
5036 sk_SSL_CIPHER_free(scsvs);
5040 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5042 ctx->max_early_data = max_early_data;
5047 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5049 return ctx->max_early_data;
5052 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5054 s->max_early_data = max_early_data;
5059 uint32_t SSL_get_max_early_data(const SSL *s)
5061 return s->max_early_data;