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 if we are not doing session-id reuse.
571 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
572 && (s->method != s->ctx->method)) {
573 s->method->ssl_free(s);
574 s->method = s->ctx->method;
575 if (!s->method->ssl_new(s))
578 if (!s->method->ssl_clear(s))
582 RECORD_LAYER_clear(&s->rlayer);
587 /** Used to change an SSL_CTXs default SSL method type */
588 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
590 STACK_OF(SSL_CIPHER) *sk;
594 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
595 &(ctx->cipher_list_by_id),
596 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
597 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
598 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
604 SSL *SSL_new(SSL_CTX *ctx)
609 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
612 if (ctx->method == NULL) {
613 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
617 s = OPENSSL_zalloc(sizeof(*s));
621 s->lock = CRYPTO_THREAD_lock_new();
622 if (s->lock == NULL) {
623 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
628 RECORD_LAYER_init(&s->rlayer, s);
630 s->options = ctx->options;
631 s->dane.flags = ctx->dane.flags;
632 s->min_proto_version = ctx->min_proto_version;
633 s->max_proto_version = ctx->max_proto_version;
635 s->max_cert_list = ctx->max_cert_list;
637 s->max_early_data = ctx->max_early_data;
640 * Earlier library versions used to copy the pointer to the CERT, not
641 * its contents; only when setting new parameters for the per-SSL
642 * copy, ssl_cert_new would be called (and the direct reference to
643 * the per-SSL_CTX settings would be lost, but those still were
644 * indirectly accessed for various purposes, and for that reason they
645 * used to be known as s->ctx->default_cert). Now we don't look at the
646 * SSL_CTX's CERT after having duplicated it once.
648 s->cert = ssl_cert_dup(ctx->cert);
652 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
653 s->msg_callback = ctx->msg_callback;
654 s->msg_callback_arg = ctx->msg_callback_arg;
655 s->verify_mode = ctx->verify_mode;
656 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
657 s->record_padding_cb = ctx->record_padding_cb;
658 s->record_padding_arg = ctx->record_padding_arg;
659 s->block_padding = ctx->block_padding;
660 s->sid_ctx_length = ctx->sid_ctx_length;
661 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
663 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
664 s->verify_callback = ctx->default_verify_callback;
665 s->generate_session_id = ctx->generate_session_id;
667 s->param = X509_VERIFY_PARAM_new();
668 if (s->param == NULL)
670 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
671 s->quiet_shutdown = ctx->quiet_shutdown;
672 s->max_send_fragment = ctx->max_send_fragment;
673 s->split_send_fragment = ctx->split_send_fragment;
674 s->max_pipelines = ctx->max_pipelines;
675 if (s->max_pipelines > 1)
676 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
677 if (ctx->default_read_buf_len > 0)
678 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
683 s->ext.debug_arg = NULL;
684 s->ext.ticket_expected = 0;
685 s->ext.status_type = ctx->ext.status_type;
686 s->ext.status_expected = 0;
687 s->ext.ocsp.ids = NULL;
688 s->ext.ocsp.exts = NULL;
689 s->ext.ocsp.resp = NULL;
690 s->ext.ocsp.resp_len = 0;
692 s->session_ctx = ctx;
693 #ifndef OPENSSL_NO_EC
694 if (ctx->ext.ecpointformats) {
695 s->ext.ecpointformats =
696 OPENSSL_memdup(ctx->ext.ecpointformats,
697 ctx->ext.ecpointformats_len);
698 if (!s->ext.ecpointformats)
700 s->ext.ecpointformats_len =
701 ctx->ext.ecpointformats_len;
703 if (ctx->ext.supportedgroups) {
704 s->ext.supportedgroups =
705 OPENSSL_memdup(ctx->ext.supportedgroups,
706 ctx->ext.supportedgroups_len);
707 if (!s->ext.supportedgroups)
709 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
712 #ifndef OPENSSL_NO_NEXTPROTONEG
716 if (s->ctx->ext.alpn) {
717 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
718 if (s->ext.alpn == NULL)
720 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
721 s->ext.alpn_len = s->ctx->ext.alpn_len;
724 s->verified_chain = NULL;
725 s->verify_result = X509_V_OK;
727 s->default_passwd_callback = ctx->default_passwd_callback;
728 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
730 s->method = ctx->method;
732 s->key_update = SSL_KEY_UPDATE_NONE;
734 if (!s->method->ssl_new(s))
737 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
742 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
745 #ifndef OPENSSL_NO_PSK
746 s->psk_client_callback = ctx->psk_client_callback;
747 s->psk_server_callback = ctx->psk_server_callback;
749 s->psk_find_session_cb = ctx->psk_find_session_cb;
750 s->psk_use_session_cb = ctx->psk_use_session_cb;
754 #ifndef OPENSSL_NO_CT
755 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
756 ctx->ct_validation_callback_arg))
763 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
767 int SSL_is_dtls(const SSL *s)
769 return SSL_IS_DTLS(s) ? 1 : 0;
772 int SSL_up_ref(SSL *s)
776 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
779 REF_PRINT_COUNT("SSL", s);
780 REF_ASSERT_ISNT(i < 2);
781 return ((i > 1) ? 1 : 0);
784 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
785 unsigned int sid_ctx_len)
787 if (sid_ctx_len > sizeof ctx->sid_ctx) {
788 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
789 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
792 ctx->sid_ctx_length = sid_ctx_len;
793 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
798 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
799 unsigned int sid_ctx_len)
801 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
802 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
803 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
806 ssl->sid_ctx_length = sid_ctx_len;
807 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
812 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
814 CRYPTO_THREAD_write_lock(ctx->lock);
815 ctx->generate_session_id = cb;
816 CRYPTO_THREAD_unlock(ctx->lock);
820 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
822 CRYPTO_THREAD_write_lock(ssl->lock);
823 ssl->generate_session_id = cb;
824 CRYPTO_THREAD_unlock(ssl->lock);
828 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
832 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
833 * we can "construct" a session to give us the desired check - i.e. to
834 * find if there's a session in the hash table that would conflict with
835 * any new session built out of this id/id_len and the ssl_version in use
840 if (id_len > sizeof r.session_id)
843 r.ssl_version = ssl->version;
844 r.session_id_length = id_len;
845 memcpy(r.session_id, id, id_len);
847 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
848 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
849 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
853 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
855 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
858 int SSL_set_purpose(SSL *s, int purpose)
860 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
863 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
865 return X509_VERIFY_PARAM_set_trust(s->param, trust);
868 int SSL_set_trust(SSL *s, int trust)
870 return X509_VERIFY_PARAM_set_trust(s->param, trust);
873 int SSL_set1_host(SSL *s, const char *hostname)
875 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
878 int SSL_add1_host(SSL *s, const char *hostname)
880 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
883 void SSL_set_hostflags(SSL *s, unsigned int flags)
885 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
888 const char *SSL_get0_peername(SSL *s)
890 return X509_VERIFY_PARAM_get0_peername(s->param);
893 int SSL_CTX_dane_enable(SSL_CTX *ctx)
895 return dane_ctx_enable(&ctx->dane);
898 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
900 unsigned long orig = ctx->dane.flags;
902 ctx->dane.flags |= flags;
906 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
908 unsigned long orig = ctx->dane.flags;
910 ctx->dane.flags &= ~flags;
914 int SSL_dane_enable(SSL *s, const char *basedomain)
916 SSL_DANE *dane = &s->dane;
918 if (s->ctx->dane.mdmax == 0) {
919 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
922 if (dane->trecs != NULL) {
923 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
928 * Default SNI name. This rejects empty names, while set1_host below
929 * accepts them and disables host name checks. To avoid side-effects with
930 * invalid input, set the SNI name first.
932 if (s->ext.hostname == NULL) {
933 if (!SSL_set_tlsext_host_name(s, basedomain)) {
934 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
939 /* Primary RFC6125 reference identifier */
940 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
941 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
947 dane->dctx = &s->ctx->dane;
948 dane->trecs = sk_danetls_record_new_null();
950 if (dane->trecs == NULL) {
951 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
957 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
959 unsigned long orig = ssl->dane.flags;
961 ssl->dane.flags |= flags;
965 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
967 unsigned long orig = ssl->dane.flags;
969 ssl->dane.flags &= ~flags;
973 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
975 SSL_DANE *dane = &s->dane;
977 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
981 *mcert = dane->mcert;
983 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
988 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
989 uint8_t *mtype, unsigned const char **data, size_t *dlen)
991 SSL_DANE *dane = &s->dane;
993 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
997 *usage = dane->mtlsa->usage;
999 *selector = dane->mtlsa->selector;
1001 *mtype = dane->mtlsa->mtype;
1003 *data = dane->mtlsa->data;
1005 *dlen = dane->mtlsa->dlen;
1010 SSL_DANE *SSL_get0_dane(SSL *s)
1015 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1016 uint8_t mtype, unsigned char *data, size_t dlen)
1018 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1021 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1024 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1027 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1029 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1032 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1034 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1037 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1042 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1047 void SSL_certs_clear(SSL *s)
1049 ssl_cert_clear_certs(s->cert);
1052 void SSL_free(SSL *s)
1059 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1060 REF_PRINT_COUNT("SSL", s);
1063 REF_ASSERT_ISNT(i < 0);
1065 X509_VERIFY_PARAM_free(s->param);
1066 dane_final(&s->dane);
1067 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1069 /* Ignore return value */
1070 ssl_free_wbio_buffer(s);
1072 BIO_free_all(s->wbio);
1073 BIO_free_all(s->rbio);
1075 BUF_MEM_free(s->init_buf);
1077 /* add extra stuff */
1078 sk_SSL_CIPHER_free(s->cipher_list);
1079 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1081 /* Make the next call work :-) */
1082 if (s->session != NULL) {
1083 ssl_clear_bad_session(s);
1084 SSL_SESSION_free(s->session);
1086 SSL_SESSION_free(s->psksession);
1090 ssl_cert_free(s->cert);
1091 /* Free up if allocated */
1093 OPENSSL_free(s->ext.hostname);
1094 SSL_CTX_free(s->session_ctx);
1095 #ifndef OPENSSL_NO_EC
1096 OPENSSL_free(s->ext.ecpointformats);
1097 OPENSSL_free(s->ext.supportedgroups);
1098 #endif /* OPENSSL_NO_EC */
1099 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1100 #ifndef OPENSSL_NO_OCSP
1101 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1103 #ifndef OPENSSL_NO_CT
1104 SCT_LIST_free(s->scts);
1105 OPENSSL_free(s->ext.scts);
1107 OPENSSL_free(s->ext.ocsp.resp);
1108 OPENSSL_free(s->ext.alpn);
1109 OPENSSL_free(s->ext.tls13_cookie);
1110 OPENSSL_free(s->clienthello);
1112 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1114 sk_X509_pop_free(s->verified_chain, X509_free);
1116 if (s->method != NULL)
1117 s->method->ssl_free(s);
1119 RECORD_LAYER_release(&s->rlayer);
1121 SSL_CTX_free(s->ctx);
1123 ASYNC_WAIT_CTX_free(s->waitctx);
1125 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1126 OPENSSL_free(s->ext.npn);
1129 #ifndef OPENSSL_NO_SRTP
1130 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1133 CRYPTO_THREAD_lock_free(s->lock);
1138 void SSL_set0_rbio(SSL *s, BIO *rbio)
1140 BIO_free_all(s->rbio);
1144 void SSL_set0_wbio(SSL *s, BIO *wbio)
1147 * If the output buffering BIO is still in place, remove it
1149 if (s->bbio != NULL)
1150 s->wbio = BIO_pop(s->wbio);
1152 BIO_free_all(s->wbio);
1155 /* Re-attach |bbio| to the new |wbio|. */
1156 if (s->bbio != NULL)
1157 s->wbio = BIO_push(s->bbio, s->wbio);
1160 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1163 * For historical reasons, this function has many different cases in
1164 * ownership handling.
1167 /* If nothing has changed, do nothing */
1168 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1172 * If the two arguments are equal then one fewer reference is granted by the
1173 * caller than we want to take
1175 if (rbio != NULL && rbio == wbio)
1179 * If only the wbio is changed only adopt one reference.
1181 if (rbio == SSL_get_rbio(s)) {
1182 SSL_set0_wbio(s, wbio);
1186 * There is an asymmetry here for historical reasons. If only the rbio is
1187 * changed AND the rbio and wbio were originally different, then we only
1188 * adopt one reference.
1190 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1191 SSL_set0_rbio(s, rbio);
1195 /* Otherwise, adopt both references. */
1196 SSL_set0_rbio(s, rbio);
1197 SSL_set0_wbio(s, wbio);
1200 BIO *SSL_get_rbio(const SSL *s)
1205 BIO *SSL_get_wbio(const SSL *s)
1207 if (s->bbio != NULL) {
1209 * If |bbio| is active, the true caller-configured BIO is its
1212 return BIO_next(s->bbio);
1217 int SSL_get_fd(const SSL *s)
1219 return SSL_get_rfd(s);
1222 int SSL_get_rfd(const SSL *s)
1227 b = SSL_get_rbio(s);
1228 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1230 BIO_get_fd(r, &ret);
1234 int SSL_get_wfd(const SSL *s)
1239 b = SSL_get_wbio(s);
1240 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1242 BIO_get_fd(r, &ret);
1246 #ifndef OPENSSL_NO_SOCK
1247 int SSL_set_fd(SSL *s, int fd)
1252 bio = BIO_new(BIO_s_socket());
1255 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1258 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1259 SSL_set_bio(s, bio, bio);
1265 int SSL_set_wfd(SSL *s, int fd)
1267 BIO *rbio = SSL_get_rbio(s);
1269 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1270 || (int)BIO_get_fd(rbio, NULL) != fd) {
1271 BIO *bio = BIO_new(BIO_s_socket());
1274 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1277 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1278 SSL_set0_wbio(s, bio);
1281 SSL_set0_wbio(s, rbio);
1286 int SSL_set_rfd(SSL *s, int fd)
1288 BIO *wbio = SSL_get_wbio(s);
1290 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1291 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1292 BIO *bio = BIO_new(BIO_s_socket());
1295 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1298 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1299 SSL_set0_rbio(s, bio);
1302 SSL_set0_rbio(s, wbio);
1309 /* return length of latest Finished message we sent, copy to 'buf' */
1310 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1314 if (s->s3 != NULL) {
1315 ret = s->s3->tmp.finish_md_len;
1318 memcpy(buf, s->s3->tmp.finish_md, count);
1323 /* return length of latest Finished message we expected, copy to 'buf' */
1324 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1328 if (s->s3 != NULL) {
1329 ret = s->s3->tmp.peer_finish_md_len;
1332 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1337 int SSL_get_verify_mode(const SSL *s)
1339 return (s->verify_mode);
1342 int SSL_get_verify_depth(const SSL *s)
1344 return X509_VERIFY_PARAM_get_depth(s->param);
1347 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1348 return (s->verify_callback);
1351 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1353 return (ctx->verify_mode);
1356 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1358 return X509_VERIFY_PARAM_get_depth(ctx->param);
1361 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1362 return (ctx->default_verify_callback);
1365 void SSL_set_verify(SSL *s, int mode,
1366 int (*callback) (int ok, X509_STORE_CTX *ctx))
1368 s->verify_mode = mode;
1369 if (callback != NULL)
1370 s->verify_callback = callback;
1373 void SSL_set_verify_depth(SSL *s, int depth)
1375 X509_VERIFY_PARAM_set_depth(s->param, depth);
1378 void SSL_set_read_ahead(SSL *s, int yes)
1380 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1383 int SSL_get_read_ahead(const SSL *s)
1385 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1388 int SSL_pending(const SSL *s)
1390 size_t pending = s->method->ssl_pending(s);
1393 * SSL_pending cannot work properly if read-ahead is enabled
1394 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1395 * impossible to fix since SSL_pending cannot report errors that may be
1396 * observed while scanning the new data. (Note that SSL_pending() is
1397 * often used as a boolean value, so we'd better not return -1.)
1399 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1400 * we just return INT_MAX.
1402 return pending < INT_MAX ? (int)pending : INT_MAX;
1405 int SSL_has_pending(const SSL *s)
1408 * Similar to SSL_pending() but returns a 1 to indicate that we have
1409 * unprocessed data available or 0 otherwise (as opposed to the number of
1410 * bytes available). Unlike SSL_pending() this will take into account
1411 * read_ahead data. A 1 return simply indicates that we have unprocessed
1412 * data. That data may not result in any application data, or we may fail
1413 * to parse the records for some reason.
1415 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1418 return RECORD_LAYER_read_pending(&s->rlayer);
1421 X509 *SSL_get_peer_certificate(const SSL *s)
1425 if ((s == NULL) || (s->session == NULL))
1428 r = s->session->peer;
1438 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1442 if ((s == NULL) || (s->session == NULL))
1445 r = s->session->peer_chain;
1448 * If we are a client, cert_chain includes the peer's own certificate; if
1449 * we are a server, it does not.
1456 * Now in theory, since the calling process own 't' it should be safe to
1457 * modify. We need to be able to read f without being hassled
1459 int SSL_copy_session_id(SSL *t, const SSL *f)
1462 /* Do we need to to SSL locking? */
1463 if (!SSL_set_session(t, SSL_get_session(f))) {
1468 * what if we are setup for one protocol version but want to talk another
1470 if (t->method != f->method) {
1471 t->method->ssl_free(t);
1472 t->method = f->method;
1473 if (t->method->ssl_new(t) == 0)
1477 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1478 ssl_cert_free(t->cert);
1480 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1487 /* Fix this so it checks all the valid key/cert options */
1488 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1490 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1491 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1494 if (ctx->cert->key->privatekey == NULL) {
1495 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1498 return (X509_check_private_key
1499 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1502 /* Fix this function so that it takes an optional type parameter */
1503 int SSL_check_private_key(const SSL *ssl)
1506 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1509 if (ssl->cert->key->x509 == NULL) {
1510 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1513 if (ssl->cert->key->privatekey == NULL) {
1514 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1517 return (X509_check_private_key(ssl->cert->key->x509,
1518 ssl->cert->key->privatekey));
1521 int SSL_waiting_for_async(SSL *s)
1529 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1531 ASYNC_WAIT_CTX *ctx = s->waitctx;
1535 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1538 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1539 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1541 ASYNC_WAIT_CTX *ctx = s->waitctx;
1545 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1549 int SSL_accept(SSL *s)
1551 if (s->handshake_func == NULL) {
1552 /* Not properly initialized yet */
1553 SSL_set_accept_state(s);
1556 return SSL_do_handshake(s);
1559 int SSL_connect(SSL *s)
1561 if (s->handshake_func == NULL) {
1562 /* Not properly initialized yet */
1563 SSL_set_connect_state(s);
1566 return SSL_do_handshake(s);
1569 long SSL_get_default_timeout(const SSL *s)
1571 return (s->method->get_timeout());
1574 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1575 int (*func) (void *))
1578 if (s->waitctx == NULL) {
1579 s->waitctx = ASYNC_WAIT_CTX_new();
1580 if (s->waitctx == NULL)
1583 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1584 sizeof(struct ssl_async_args))) {
1586 s->rwstate = SSL_NOTHING;
1587 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1590 s->rwstate = SSL_ASYNC_PAUSED;
1593 s->rwstate = SSL_ASYNC_NO_JOBS;
1599 s->rwstate = SSL_NOTHING;
1600 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1601 /* Shouldn't happen */
1606 static int ssl_io_intern(void *vargs)
1608 struct ssl_async_args *args;
1613 args = (struct ssl_async_args *)vargs;
1617 switch (args->type) {
1619 return args->f.func_read(s, buf, num, &s->asyncrw);
1621 return args->f.func_write(s, buf, num, &s->asyncrw);
1623 return args->f.func_other(s);
1628 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1630 if (s->handshake_func == NULL) {
1631 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1635 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1636 s->rwstate = SSL_NOTHING;
1640 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1641 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1642 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1646 * If we are a client and haven't received the ServerHello etc then we
1649 ossl_statem_check_finish_init(s, 0);
1651 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1652 struct ssl_async_args args;
1658 args.type = READFUNC;
1659 args.f.func_read = s->method->ssl_read;
1661 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1662 *readbytes = s->asyncrw;
1665 return s->method->ssl_read(s, buf, num, readbytes);
1669 int SSL_read(SSL *s, void *buf, int num)
1675 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1679 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1682 * The cast is safe here because ret should be <= INT_MAX because num is
1686 ret = (int)readbytes;
1691 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1693 int ret = ssl_read_internal(s, buf, num, readbytes);
1700 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1705 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1706 return SSL_READ_EARLY_DATA_ERROR;
1709 switch (s->early_data_state) {
1710 case SSL_EARLY_DATA_NONE:
1711 if (!SSL_in_before(s)) {
1712 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1713 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1714 return SSL_READ_EARLY_DATA_ERROR;
1718 case SSL_EARLY_DATA_ACCEPT_RETRY:
1719 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1720 ret = SSL_accept(s);
1723 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1724 return SSL_READ_EARLY_DATA_ERROR;
1728 case SSL_EARLY_DATA_READ_RETRY:
1729 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1730 s->early_data_state = SSL_EARLY_DATA_READING;
1731 ret = SSL_read_ex(s, buf, num, readbytes);
1733 * State machine will update early_data_state to
1734 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1737 if (ret > 0 || (ret <= 0 && s->early_data_state
1738 != SSL_EARLY_DATA_FINISHED_READING)) {
1739 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1740 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1741 : SSL_READ_EARLY_DATA_ERROR;
1744 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1747 return SSL_READ_EARLY_DATA_FINISH;
1750 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1751 return SSL_READ_EARLY_DATA_ERROR;
1755 int SSL_get_early_data_status(const SSL *s)
1757 return s->ext.early_data;
1760 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1762 if (s->handshake_func == NULL) {
1763 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1767 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1770 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1771 struct ssl_async_args args;
1777 args.type = READFUNC;
1778 args.f.func_read = s->method->ssl_peek;
1780 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1781 *readbytes = s->asyncrw;
1784 return s->method->ssl_peek(s, buf, num, readbytes);
1788 int SSL_peek(SSL *s, void *buf, int num)
1794 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1798 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1801 * The cast is safe here because ret should be <= INT_MAX because num is
1805 ret = (int)readbytes;
1811 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1813 int ret = ssl_peek_internal(s, buf, num, readbytes);
1820 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1822 if (s->handshake_func == NULL) {
1823 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1827 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1828 s->rwstate = SSL_NOTHING;
1829 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1833 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1834 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1835 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1836 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1839 /* If we are a client and haven't sent the Finished we better do that */
1840 ossl_statem_check_finish_init(s, 1);
1842 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1844 struct ssl_async_args args;
1847 args.buf = (void *)buf;
1849 args.type = WRITEFUNC;
1850 args.f.func_write = s->method->ssl_write;
1852 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1853 *written = s->asyncrw;
1856 return s->method->ssl_write(s, buf, num, written);
1860 int SSL_write(SSL *s, const void *buf, int num)
1866 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1870 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1873 * The cast is safe here because ret should be <= INT_MAX because num is
1882 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1884 int ret = ssl_write_internal(s, buf, num, written);
1891 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1893 int ret, early_data_state;
1895 switch (s->early_data_state) {
1896 case SSL_EARLY_DATA_NONE:
1898 || !SSL_in_before(s)
1899 || s->session == NULL
1900 || s->session->ext.max_early_data == 0) {
1901 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1902 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1907 case SSL_EARLY_DATA_CONNECT_RETRY:
1908 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1909 ret = SSL_connect(s);
1912 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1917 case SSL_EARLY_DATA_WRITE_RETRY:
1918 s->early_data_state = SSL_EARLY_DATA_WRITING;
1919 ret = SSL_write_ex(s, buf, num, written);
1920 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1923 case SSL_EARLY_DATA_FINISHED_READING:
1924 case SSL_EARLY_DATA_READ_RETRY:
1925 early_data_state = s->early_data_state;
1926 /* We are a server writing to an unauthenticated client */
1927 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1928 ret = SSL_write_ex(s, buf, num, written);
1929 s->early_data_state = early_data_state;
1933 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1938 int SSL_shutdown(SSL *s)
1941 * Note that this function behaves differently from what one might
1942 * expect. Return values are 0 for no success (yet), 1 for success; but
1943 * calling it once is usually not enough, even if blocking I/O is used
1944 * (see ssl3_shutdown).
1947 if (s->handshake_func == NULL) {
1948 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1952 if (!SSL_in_init(s)) {
1953 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1954 struct ssl_async_args args;
1957 args.type = OTHERFUNC;
1958 args.f.func_other = s->method->ssl_shutdown;
1960 return ssl_start_async_job(s, &args, ssl_io_intern);
1962 return s->method->ssl_shutdown(s);
1965 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1970 int SSL_key_update(SSL *s, int updatetype)
1973 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1974 * negotiated, and that it is appropriate to call SSL_key_update() instead
1975 * of SSL_renegotiate().
1977 if (!SSL_IS_TLS13(s)) {
1978 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
1982 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
1983 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
1984 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
1988 if (!SSL_is_init_finished(s)) {
1989 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
1993 ossl_statem_set_in_init(s, 1);
1994 s->key_update = updatetype;
1998 int SSL_get_key_update_type(SSL *s)
2000 return s->key_update;
2003 int SSL_renegotiate(SSL *s)
2005 if (SSL_IS_TLS13(s)) {
2006 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2010 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2011 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2018 return (s->method->ssl_renegotiate(s));
2021 int SSL_renegotiate_abbreviated(SSL *s)
2023 if (SSL_IS_TLS13(s)) {
2024 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2028 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2029 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2036 return (s->method->ssl_renegotiate(s));
2039 int SSL_renegotiate_pending(SSL *s)
2042 * becomes true when negotiation is requested; false again once a
2043 * handshake has finished
2045 return (s->renegotiate != 0);
2048 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2053 case SSL_CTRL_GET_READ_AHEAD:
2054 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2055 case SSL_CTRL_SET_READ_AHEAD:
2056 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2057 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2060 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2061 s->msg_callback_arg = parg;
2065 return (s->mode |= larg);
2066 case SSL_CTRL_CLEAR_MODE:
2067 return (s->mode &= ~larg);
2068 case SSL_CTRL_GET_MAX_CERT_LIST:
2069 return (long)(s->max_cert_list);
2070 case SSL_CTRL_SET_MAX_CERT_LIST:
2073 l = (long)s->max_cert_list;
2074 s->max_cert_list = (size_t)larg;
2076 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2077 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2079 s->max_send_fragment = larg;
2080 if (s->max_send_fragment < s->split_send_fragment)
2081 s->split_send_fragment = s->max_send_fragment;
2083 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2084 if ((size_t)larg > s->max_send_fragment || larg == 0)
2086 s->split_send_fragment = larg;
2088 case SSL_CTRL_SET_MAX_PIPELINES:
2089 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2091 s->max_pipelines = larg;
2093 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2095 case SSL_CTRL_GET_RI_SUPPORT:
2097 return s->s3->send_connection_binding;
2100 case SSL_CTRL_CERT_FLAGS:
2101 return (s->cert->cert_flags |= larg);
2102 case SSL_CTRL_CLEAR_CERT_FLAGS:
2103 return (s->cert->cert_flags &= ~larg);
2105 case SSL_CTRL_GET_RAW_CIPHERLIST:
2107 if (s->s3->tmp.ciphers_raw == NULL)
2109 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2110 return (int)s->s3->tmp.ciphers_rawlen;
2112 return TLS_CIPHER_LEN;
2114 case SSL_CTRL_GET_EXTMS_SUPPORT:
2115 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2117 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2121 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2122 return ssl_check_allowed_versions(larg, s->max_proto_version)
2123 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2124 &s->min_proto_version);
2125 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2126 return ssl_check_allowed_versions(s->min_proto_version, larg)
2127 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2128 &s->max_proto_version);
2130 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2134 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2137 case SSL_CTRL_SET_MSG_CALLBACK:
2138 s->msg_callback = (void (*)
2139 (int write_p, int version, int content_type,
2140 const void *buf, size_t len, SSL *ssl,
2145 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2149 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2151 return ctx->sessions;
2154 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2157 /* For some cases with ctx == NULL perform syntax checks */
2160 #ifndef OPENSSL_NO_EC
2161 case SSL_CTRL_SET_GROUPS_LIST:
2162 return tls1_set_groups_list(NULL, NULL, parg);
2164 case SSL_CTRL_SET_SIGALGS_LIST:
2165 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2166 return tls1_set_sigalgs_list(NULL, parg, 0);
2173 case SSL_CTRL_GET_READ_AHEAD:
2174 return (ctx->read_ahead);
2175 case SSL_CTRL_SET_READ_AHEAD:
2176 l = ctx->read_ahead;
2177 ctx->read_ahead = larg;
2180 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2181 ctx->msg_callback_arg = parg;
2184 case SSL_CTRL_GET_MAX_CERT_LIST:
2185 return (long)(ctx->max_cert_list);
2186 case SSL_CTRL_SET_MAX_CERT_LIST:
2189 l = (long)ctx->max_cert_list;
2190 ctx->max_cert_list = (size_t)larg;
2193 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2196 l = (long)ctx->session_cache_size;
2197 ctx->session_cache_size = (size_t)larg;
2199 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2200 return (long)(ctx->session_cache_size);
2201 case SSL_CTRL_SET_SESS_CACHE_MODE:
2202 l = ctx->session_cache_mode;
2203 ctx->session_cache_mode = larg;
2205 case SSL_CTRL_GET_SESS_CACHE_MODE:
2206 return (ctx->session_cache_mode);
2208 case SSL_CTRL_SESS_NUMBER:
2209 return (lh_SSL_SESSION_num_items(ctx->sessions));
2210 case SSL_CTRL_SESS_CONNECT:
2211 return (ctx->stats.sess_connect);
2212 case SSL_CTRL_SESS_CONNECT_GOOD:
2213 return (ctx->stats.sess_connect_good);
2214 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2215 return (ctx->stats.sess_connect_renegotiate);
2216 case SSL_CTRL_SESS_ACCEPT:
2217 return (ctx->stats.sess_accept);
2218 case SSL_CTRL_SESS_ACCEPT_GOOD:
2219 return (ctx->stats.sess_accept_good);
2220 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2221 return (ctx->stats.sess_accept_renegotiate);
2222 case SSL_CTRL_SESS_HIT:
2223 return (ctx->stats.sess_hit);
2224 case SSL_CTRL_SESS_CB_HIT:
2225 return (ctx->stats.sess_cb_hit);
2226 case SSL_CTRL_SESS_MISSES:
2227 return (ctx->stats.sess_miss);
2228 case SSL_CTRL_SESS_TIMEOUTS:
2229 return (ctx->stats.sess_timeout);
2230 case SSL_CTRL_SESS_CACHE_FULL:
2231 return (ctx->stats.sess_cache_full);
2233 return (ctx->mode |= larg);
2234 case SSL_CTRL_CLEAR_MODE:
2235 return (ctx->mode &= ~larg);
2236 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2237 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2239 ctx->max_send_fragment = larg;
2240 if (ctx->max_send_fragment < ctx->split_send_fragment)
2241 ctx->split_send_fragment = ctx->max_send_fragment;
2243 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2244 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2246 ctx->split_send_fragment = larg;
2248 case SSL_CTRL_SET_MAX_PIPELINES:
2249 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2251 ctx->max_pipelines = larg;
2253 case SSL_CTRL_CERT_FLAGS:
2254 return (ctx->cert->cert_flags |= larg);
2255 case SSL_CTRL_CLEAR_CERT_FLAGS:
2256 return (ctx->cert->cert_flags &= ~larg);
2257 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2258 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2259 && ssl_set_version_bound(ctx->method->version, (int)larg,
2260 &ctx->min_proto_version);
2261 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2262 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2263 && ssl_set_version_bound(ctx->method->version, (int)larg,
2264 &ctx->max_proto_version);
2266 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2270 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2273 case SSL_CTRL_SET_MSG_CALLBACK:
2274 ctx->msg_callback = (void (*)
2275 (int write_p, int version, int content_type,
2276 const void *buf, size_t len, SSL *ssl,
2281 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2285 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2294 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2295 const SSL_CIPHER *const *bp)
2297 if ((*ap)->id > (*bp)->id)
2299 if ((*ap)->id < (*bp)->id)
2304 /** return a STACK of the ciphers available for the SSL and in order of
2306 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2309 if (s->cipher_list != NULL) {
2310 return (s->cipher_list);
2311 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2312 return (s->ctx->cipher_list);
2318 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2320 if ((s == NULL) || (s->session == NULL) || !s->server)
2322 return s->session->ciphers;
2325 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2327 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2329 ciphers = SSL_get_ciphers(s);
2332 ssl_set_client_disabled(s);
2333 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2334 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2335 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2337 sk = sk_SSL_CIPHER_new_null();
2340 if (!sk_SSL_CIPHER_push(sk, c)) {
2341 sk_SSL_CIPHER_free(sk);
2349 /** return a STACK of the ciphers available for the SSL and in order of
2351 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2354 if (s->cipher_list_by_id != NULL) {
2355 return (s->cipher_list_by_id);
2356 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2357 return (s->ctx->cipher_list_by_id);
2363 /** The old interface to get the same thing as SSL_get_ciphers() */
2364 const char *SSL_get_cipher_list(const SSL *s, int n)
2366 const SSL_CIPHER *c;
2367 STACK_OF(SSL_CIPHER) *sk;
2371 sk = SSL_get_ciphers(s);
2372 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2374 c = sk_SSL_CIPHER_value(sk, n);
2380 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2382 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2385 return ctx->cipher_list;
2389 /** specify the ciphers to be used by default by the SSL_CTX */
2390 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2392 STACK_OF(SSL_CIPHER) *sk;
2394 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2395 &ctx->cipher_list_by_id, str, ctx->cert);
2397 * ssl_create_cipher_list may return an empty stack if it was unable to
2398 * find a cipher matching the given rule string (for example if the rule
2399 * string specifies a cipher which has been disabled). This is not an
2400 * error as far as ssl_create_cipher_list is concerned, and hence
2401 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2405 else if (sk_SSL_CIPHER_num(sk) == 0) {
2406 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2412 /** specify the ciphers to be used by the SSL */
2413 int SSL_set_cipher_list(SSL *s, const char *str)
2415 STACK_OF(SSL_CIPHER) *sk;
2417 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2418 &s->cipher_list_by_id, str, s->cert);
2419 /* see comment in SSL_CTX_set_cipher_list */
2422 else if (sk_SSL_CIPHER_num(sk) == 0) {
2423 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2429 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2432 STACK_OF(SSL_CIPHER) *sk;
2433 const SSL_CIPHER *c;
2436 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2440 sk = s->session->ciphers;
2442 if (sk_SSL_CIPHER_num(sk) == 0)
2445 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2448 c = sk_SSL_CIPHER_value(sk, i);
2449 n = strlen(c->name);
2456 memcpy(p, c->name, n + 1);
2465 /** return a servername extension value if provided in Client Hello, or NULL.
2466 * So far, only host_name types are defined (RFC 3546).
2469 const char *SSL_get_servername(const SSL *s, const int type)
2471 if (type != TLSEXT_NAMETYPE_host_name)
2474 return s->session && !s->ext.hostname ?
2475 s->session->ext.hostname : s->ext.hostname;
2478 int SSL_get_servername_type(const SSL *s)
2481 && (!s->ext.hostname ? s->session->
2482 ext.hostname : s->ext.hostname))
2483 return TLSEXT_NAMETYPE_host_name;
2488 * SSL_select_next_proto implements the standard protocol selection. It is
2489 * expected that this function is called from the callback set by
2490 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2491 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2492 * not included in the length. A byte string of length 0 is invalid. No byte
2493 * string may be truncated. The current, but experimental algorithm for
2494 * selecting the protocol is: 1) If the server doesn't support NPN then this
2495 * is indicated to the callback. In this case, the client application has to
2496 * abort the connection or have a default application level protocol. 2) If
2497 * the server supports NPN, but advertises an empty list then the client
2498 * selects the first protocol in its list, but indicates via the API that this
2499 * fallback case was enacted. 3) Otherwise, the client finds the first
2500 * protocol in the server's list that it supports and selects this protocol.
2501 * This is because it's assumed that the server has better information about
2502 * which protocol a client should use. 4) If the client doesn't support any
2503 * of the server's advertised protocols, then this is treated the same as
2504 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2505 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2507 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2508 const unsigned char *server,
2509 unsigned int server_len,
2510 const unsigned char *client, unsigned int client_len)
2513 const unsigned char *result;
2514 int status = OPENSSL_NPN_UNSUPPORTED;
2517 * For each protocol in server preference order, see if we support it.
2519 for (i = 0; i < server_len;) {
2520 for (j = 0; j < client_len;) {
2521 if (server[i] == client[j] &&
2522 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2523 /* We found a match */
2524 result = &server[i];
2525 status = OPENSSL_NPN_NEGOTIATED;
2535 /* There's no overlap between our protocols and the server's list. */
2537 status = OPENSSL_NPN_NO_OVERLAP;
2540 *out = (unsigned char *)result + 1;
2541 *outlen = result[0];
2545 #ifndef OPENSSL_NO_NEXTPROTONEG
2547 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2548 * client's requested protocol for this connection and returns 0. If the
2549 * client didn't request any protocol, then *data is set to NULL. Note that
2550 * the client can request any protocol it chooses. The value returned from
2551 * this function need not be a member of the list of supported protocols
2552 * provided by the callback.
2554 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2561 *len = (unsigned int)s->ext.npn_len;
2566 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2567 * a TLS server needs a list of supported protocols for Next Protocol
2568 * Negotiation. The returned list must be in wire format. The list is
2569 * returned by setting |out| to point to it and |outlen| to its length. This
2570 * memory will not be modified, but one should assume that the SSL* keeps a
2571 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2572 * wishes to advertise. Otherwise, no such extension will be included in the
2575 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2576 SSL_CTX_npn_advertised_cb_func cb,
2579 ctx->ext.npn_advertised_cb = cb;
2580 ctx->ext.npn_advertised_cb_arg = arg;
2584 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2585 * client needs to select a protocol from the server's provided list. |out|
2586 * must be set to point to the selected protocol (which may be within |in|).
2587 * The length of the protocol name must be written into |outlen|. The
2588 * server's advertised protocols are provided in |in| and |inlen|. The
2589 * callback can assume that |in| is syntactically valid. The client must
2590 * select a protocol. It is fatal to the connection if this callback returns
2591 * a value other than SSL_TLSEXT_ERR_OK.
2593 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2594 SSL_CTX_npn_select_cb_func cb,
2597 ctx->ext.npn_select_cb = cb;
2598 ctx->ext.npn_select_cb_arg = arg;
2603 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2604 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2605 * length-prefixed strings). Returns 0 on success.
2607 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2608 unsigned int protos_len)
2610 OPENSSL_free(ctx->ext.alpn);
2611 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2612 if (ctx->ext.alpn == NULL) {
2613 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2616 ctx->ext.alpn_len = protos_len;
2622 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2623 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2624 * length-prefixed strings). Returns 0 on success.
2626 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2627 unsigned int protos_len)
2629 OPENSSL_free(ssl->ext.alpn);
2630 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2631 if (ssl->ext.alpn == NULL) {
2632 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2635 ssl->ext.alpn_len = protos_len;
2641 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2642 * called during ClientHello processing in order to select an ALPN protocol
2643 * from the client's list of offered protocols.
2645 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2646 SSL_CTX_alpn_select_cb_func cb,
2649 ctx->ext.alpn_select_cb = cb;
2650 ctx->ext.alpn_select_cb_arg = arg;
2654 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2655 * On return it sets |*data| to point to |*len| bytes of protocol name
2656 * (not including the leading length-prefix byte). If the server didn't
2657 * respond with a negotiated protocol then |*len| will be zero.
2659 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2664 *data = ssl->s3->alpn_selected;
2668 *len = (unsigned int)ssl->s3->alpn_selected_len;
2671 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2672 const char *label, size_t llen,
2673 const unsigned char *context, size_t contextlen,
2676 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2679 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2681 contextlen, use_context);
2684 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2686 const unsigned char *session_id = a->session_id;
2688 unsigned char tmp_storage[4];
2690 if (a->session_id_length < sizeof(tmp_storage)) {
2691 memset(tmp_storage, 0, sizeof(tmp_storage));
2692 memcpy(tmp_storage, a->session_id, a->session_id_length);
2693 session_id = tmp_storage;
2697 ((unsigned long)session_id[0]) |
2698 ((unsigned long)session_id[1] << 8L) |
2699 ((unsigned long)session_id[2] << 16L) |
2700 ((unsigned long)session_id[3] << 24L);
2705 * NB: If this function (or indeed the hash function which uses a sort of
2706 * coarser function than this one) is changed, ensure
2707 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2708 * being able to construct an SSL_SESSION that will collide with any existing
2709 * session with a matching session ID.
2711 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2713 if (a->ssl_version != b->ssl_version)
2715 if (a->session_id_length != b->session_id_length)
2717 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2721 * These wrapper functions should remain rather than redeclaring
2722 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2723 * variable. The reason is that the functions aren't static, they're exposed
2727 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2729 SSL_CTX *ret = NULL;
2732 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2736 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2739 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2740 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2743 ret = OPENSSL_zalloc(sizeof(*ret));
2748 ret->min_proto_version = 0;
2749 ret->max_proto_version = 0;
2750 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2751 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2752 /* We take the system default. */
2753 ret->session_timeout = meth->get_timeout();
2754 ret->references = 1;
2755 ret->lock = CRYPTO_THREAD_lock_new();
2756 if (ret->lock == NULL) {
2757 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2761 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2762 ret->verify_mode = SSL_VERIFY_NONE;
2763 if ((ret->cert = ssl_cert_new()) == NULL)
2766 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2767 if (ret->sessions == NULL)
2769 ret->cert_store = X509_STORE_new();
2770 if (ret->cert_store == NULL)
2772 #ifndef OPENSSL_NO_CT
2773 ret->ctlog_store = CTLOG_STORE_new();
2774 if (ret->ctlog_store == NULL)
2777 if (!ssl_create_cipher_list(ret->method,
2778 &ret->cipher_list, &ret->cipher_list_by_id,
2779 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2780 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2781 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2785 ret->param = X509_VERIFY_PARAM_new();
2786 if (ret->param == NULL)
2789 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2790 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2793 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2794 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2798 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2801 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2804 /* No compression for DTLS */
2805 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2806 ret->comp_methods = SSL_COMP_get_compression_methods();
2808 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2809 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2811 /* Setup RFC5077 ticket keys */
2812 if ((RAND_bytes(ret->ext.tick_key_name,
2813 sizeof(ret->ext.tick_key_name)) <= 0)
2814 || (RAND_bytes(ret->ext.tick_hmac_key,
2815 sizeof(ret->ext.tick_hmac_key)) <= 0)
2816 || (RAND_bytes(ret->ext.tick_aes_key,
2817 sizeof(ret->ext.tick_aes_key)) <= 0))
2818 ret->options |= SSL_OP_NO_TICKET;
2820 #ifndef OPENSSL_NO_SRP
2821 if (!SSL_CTX_SRP_CTX_init(ret))
2824 #ifndef OPENSSL_NO_ENGINE
2825 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2826 # define eng_strx(x) #x
2827 # define eng_str(x) eng_strx(x)
2828 /* Use specific client engine automatically... ignore errors */
2831 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2834 ENGINE_load_builtin_engines();
2835 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2837 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2843 * Default is to connect to non-RI servers. When RI is more widely
2844 * deployed might change this.
2846 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2848 * Disable compression by default to prevent CRIME. Applications can
2849 * re-enable compression by configuring
2850 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2851 * or by using the SSL_CONF library.
2853 ret->options |= SSL_OP_NO_COMPRESSION;
2855 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2858 * Default max early data is a fully loaded single record. Could be split
2859 * across multiple records in practice
2861 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2865 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2871 int SSL_CTX_up_ref(SSL_CTX *ctx)
2875 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2878 REF_PRINT_COUNT("SSL_CTX", ctx);
2879 REF_ASSERT_ISNT(i < 2);
2880 return ((i > 1) ? 1 : 0);
2883 void SSL_CTX_free(SSL_CTX *a)
2890 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2891 REF_PRINT_COUNT("SSL_CTX", a);
2894 REF_ASSERT_ISNT(i < 0);
2896 X509_VERIFY_PARAM_free(a->param);
2897 dane_ctx_final(&a->dane);
2900 * Free internal session cache. However: the remove_cb() may reference
2901 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2902 * after the sessions were flushed.
2903 * As the ex_data handling routines might also touch the session cache,
2904 * the most secure solution seems to be: empty (flush) the cache, then
2905 * free ex_data, then finally free the cache.
2906 * (See ticket [openssl.org #212].)
2908 if (a->sessions != NULL)
2909 SSL_CTX_flush_sessions(a, 0);
2911 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2912 lh_SSL_SESSION_free(a->sessions);
2913 X509_STORE_free(a->cert_store);
2914 #ifndef OPENSSL_NO_CT
2915 CTLOG_STORE_free(a->ctlog_store);
2917 sk_SSL_CIPHER_free(a->cipher_list);
2918 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2919 ssl_cert_free(a->cert);
2920 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2921 sk_X509_pop_free(a->extra_certs, X509_free);
2922 a->comp_methods = NULL;
2923 #ifndef OPENSSL_NO_SRTP
2924 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2926 #ifndef OPENSSL_NO_SRP
2927 SSL_CTX_SRP_CTX_free(a);
2929 #ifndef OPENSSL_NO_ENGINE
2930 ENGINE_finish(a->client_cert_engine);
2933 #ifndef OPENSSL_NO_EC
2934 OPENSSL_free(a->ext.ecpointformats);
2935 OPENSSL_free(a->ext.supportedgroups);
2937 OPENSSL_free(a->ext.alpn);
2939 CRYPTO_THREAD_lock_free(a->lock);
2944 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2946 ctx->default_passwd_callback = cb;
2949 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2951 ctx->default_passwd_callback_userdata = u;
2954 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2956 return ctx->default_passwd_callback;
2959 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2961 return ctx->default_passwd_callback_userdata;
2964 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2966 s->default_passwd_callback = cb;
2969 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2971 s->default_passwd_callback_userdata = u;
2974 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2976 return s->default_passwd_callback;
2979 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2981 return s->default_passwd_callback_userdata;
2984 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2985 int (*cb) (X509_STORE_CTX *, void *),
2988 ctx->app_verify_callback = cb;
2989 ctx->app_verify_arg = arg;
2992 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2993 int (*cb) (int, X509_STORE_CTX *))
2995 ctx->verify_mode = mode;
2996 ctx->default_verify_callback = cb;
2999 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3001 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3004 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3006 ssl_cert_set_cert_cb(c->cert, cb, arg);
3009 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3011 ssl_cert_set_cert_cb(s->cert, cb, arg);
3014 void ssl_set_masks(SSL *s)
3017 uint32_t *pvalid = s->s3->tmp.valid_flags;
3018 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3019 unsigned long mask_k, mask_a;
3020 #ifndef OPENSSL_NO_EC
3021 int have_ecc_cert, ecdsa_ok;
3026 #ifndef OPENSSL_NO_DH
3027 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3032 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3033 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3034 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3035 #ifndef OPENSSL_NO_EC
3036 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3042 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3043 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3046 #ifndef OPENSSL_NO_GOST
3047 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3048 mask_k |= SSL_kGOST;
3049 mask_a |= SSL_aGOST12;
3051 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3052 mask_k |= SSL_kGOST;
3053 mask_a |= SSL_aGOST12;
3055 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3056 mask_k |= SSL_kGOST;
3057 mask_a |= SSL_aGOST01;
3067 if (rsa_enc || rsa_sign) {
3075 mask_a |= SSL_aNULL;
3078 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3079 * depending on the key usage extension.
3081 #ifndef OPENSSL_NO_EC
3082 if (have_ecc_cert) {
3084 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3085 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3086 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3089 mask_a |= SSL_aECDSA;
3091 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3092 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3093 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3094 && TLS1_get_version(s) == TLS1_2_VERSION)
3095 mask_a |= SSL_aECDSA;
3098 #ifndef OPENSSL_NO_EC
3099 mask_k |= SSL_kECDHE;
3102 #ifndef OPENSSL_NO_PSK
3105 if (mask_k & SSL_kRSA)
3106 mask_k |= SSL_kRSAPSK;
3107 if (mask_k & SSL_kDHE)
3108 mask_k |= SSL_kDHEPSK;
3109 if (mask_k & SSL_kECDHE)
3110 mask_k |= SSL_kECDHEPSK;
3113 s->s3->tmp.mask_k = mask_k;
3114 s->s3->tmp.mask_a = mask_a;
3117 #ifndef OPENSSL_NO_EC
3119 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3121 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3122 /* key usage, if present, must allow signing */
3123 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3124 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3125 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3129 return 1; /* all checks are ok */
3134 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3135 size_t *serverinfo_length)
3137 CERT_PKEY *cpk = s->s3->tmp.cert;
3138 *serverinfo_length = 0;
3140 if (cpk == NULL || cpk->serverinfo == NULL)
3143 *serverinfo = cpk->serverinfo;
3144 *serverinfo_length = cpk->serverinfo_length;
3148 void ssl_update_cache(SSL *s, int mode)
3153 * If the session_id_length is 0, we are not supposed to cache it, and it
3154 * would be rather hard to do anyway :-)
3156 if (s->session->session_id_length == 0)
3159 i = s->session_ctx->session_cache_mode;
3160 if ((i & mode) && (!s->hit)
3161 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
3162 || SSL_CTX_add_session(s->session_ctx, s->session))
3163 && (s->session_ctx->new_session_cb != NULL)) {
3164 SSL_SESSION_up_ref(s->session);
3165 if (!s->session_ctx->new_session_cb(s, s->session))
3166 SSL_SESSION_free(s->session);
3169 /* auto flush every 255 connections */
3170 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3171 if ((((mode & SSL_SESS_CACHE_CLIENT)
3172 ? s->session_ctx->stats.sess_connect_good
3173 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3174 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3179 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3184 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3189 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3193 if (s->method != meth) {
3194 const SSL_METHOD *sm = s->method;
3195 int (*hf) (SSL *) = s->handshake_func;
3197 if (sm->version == meth->version)
3202 ret = s->method->ssl_new(s);
3205 if (hf == sm->ssl_connect)
3206 s->handshake_func = meth->ssl_connect;
3207 else if (hf == sm->ssl_accept)
3208 s->handshake_func = meth->ssl_accept;
3213 int SSL_get_error(const SSL *s, int i)
3220 return (SSL_ERROR_NONE);
3223 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3224 * where we do encode the error
3226 if ((l = ERR_peek_error()) != 0) {
3227 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3228 return (SSL_ERROR_SYSCALL);
3230 return (SSL_ERROR_SSL);
3233 if (SSL_want_read(s)) {
3234 bio = SSL_get_rbio(s);
3235 if (BIO_should_read(bio))
3236 return (SSL_ERROR_WANT_READ);
3237 else if (BIO_should_write(bio))
3239 * This one doesn't make too much sense ... We never try to write
3240 * to the rbio, and an application program where rbio and wbio
3241 * are separate couldn't even know what it should wait for.
3242 * However if we ever set s->rwstate incorrectly (so that we have
3243 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3244 * wbio *are* the same, this test works around that bug; so it
3245 * might be safer to keep it.
3247 return (SSL_ERROR_WANT_WRITE);
3248 else if (BIO_should_io_special(bio)) {
3249 reason = BIO_get_retry_reason(bio);
3250 if (reason == BIO_RR_CONNECT)
3251 return (SSL_ERROR_WANT_CONNECT);
3252 else if (reason == BIO_RR_ACCEPT)
3253 return (SSL_ERROR_WANT_ACCEPT);
3255 return (SSL_ERROR_SYSCALL); /* unknown */
3259 if (SSL_want_write(s)) {
3260 /* Access wbio directly - in order to use the buffered bio if present */
3262 if (BIO_should_write(bio))
3263 return (SSL_ERROR_WANT_WRITE);
3264 else if (BIO_should_read(bio))
3266 * See above (SSL_want_read(s) with BIO_should_write(bio))
3268 return (SSL_ERROR_WANT_READ);
3269 else if (BIO_should_io_special(bio)) {
3270 reason = BIO_get_retry_reason(bio);
3271 if (reason == BIO_RR_CONNECT)
3272 return (SSL_ERROR_WANT_CONNECT);
3273 else if (reason == BIO_RR_ACCEPT)
3274 return (SSL_ERROR_WANT_ACCEPT);
3276 return (SSL_ERROR_SYSCALL);
3279 if (SSL_want_x509_lookup(s))
3280 return (SSL_ERROR_WANT_X509_LOOKUP);
3281 if (SSL_want_async(s))
3282 return SSL_ERROR_WANT_ASYNC;
3283 if (SSL_want_async_job(s))
3284 return SSL_ERROR_WANT_ASYNC_JOB;
3285 if (SSL_want_early(s))
3286 return SSL_ERROR_WANT_EARLY;
3288 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3289 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3290 return (SSL_ERROR_ZERO_RETURN);
3292 return (SSL_ERROR_SYSCALL);
3295 static int ssl_do_handshake_intern(void *vargs)
3297 struct ssl_async_args *args;
3300 args = (struct ssl_async_args *)vargs;
3303 return s->handshake_func(s);
3306 int SSL_do_handshake(SSL *s)
3310 if (s->handshake_func == NULL) {
3311 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3315 ossl_statem_check_finish_init(s, -1);
3317 s->method->ssl_renegotiate_check(s, 0);
3319 if (SSL_in_init(s) || SSL_in_before(s)) {
3320 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3321 struct ssl_async_args args;
3325 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3327 ret = s->handshake_func(s);
3333 void SSL_set_accept_state(SSL *s)
3337 ossl_statem_clear(s);
3338 s->handshake_func = s->method->ssl_accept;
3342 void SSL_set_connect_state(SSL *s)
3346 ossl_statem_clear(s);
3347 s->handshake_func = s->method->ssl_connect;
3351 int ssl_undefined_function(SSL *s)
3353 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3357 int ssl_undefined_void_function(void)
3359 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3360 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3364 int ssl_undefined_const_function(const SSL *s)
3369 const SSL_METHOD *ssl_bad_method(int ver)
3371 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3375 const char *ssl_protocol_to_string(int version)
3379 case TLS1_3_VERSION:
3382 case TLS1_2_VERSION:
3385 case TLS1_1_VERSION:
3400 case DTLS1_2_VERSION:
3408 const char *SSL_get_version(const SSL *s)
3410 return ssl_protocol_to_string(s->version);
3413 SSL *SSL_dup(SSL *s)
3415 STACK_OF(X509_NAME) *sk;
3420 /* If we're not quiescent, just up_ref! */
3421 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3422 CRYPTO_UP_REF(&s->references, &i, s->lock);
3427 * Otherwise, copy configuration state, and session if set.
3429 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3432 if (s->session != NULL) {
3434 * Arranges to share the same session via up_ref. This "copies"
3435 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3437 if (!SSL_copy_session_id(ret, s))
3441 * No session has been established yet, so we have to expect that
3442 * s->cert or ret->cert will be changed later -- they should not both
3443 * point to the same object, and thus we can't use
3444 * SSL_copy_session_id.
3446 if (!SSL_set_ssl_method(ret, s->method))
3449 if (s->cert != NULL) {
3450 ssl_cert_free(ret->cert);
3451 ret->cert = ssl_cert_dup(s->cert);
3452 if (ret->cert == NULL)
3456 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3457 (int)s->sid_ctx_length))
3461 if (!ssl_dane_dup(ret, s))
3463 ret->version = s->version;
3464 ret->options = s->options;
3465 ret->mode = s->mode;
3466 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3467 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3468 ret->msg_callback = s->msg_callback;
3469 ret->msg_callback_arg = s->msg_callback_arg;
3470 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3471 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3472 ret->generate_session_id = s->generate_session_id;
3474 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3476 /* copy app data, a little dangerous perhaps */
3477 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3480 /* setup rbio, and wbio */
3481 if (s->rbio != NULL) {
3482 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3485 if (s->wbio != NULL) {
3486 if (s->wbio != s->rbio) {
3487 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3490 BIO_up_ref(ret->rbio);
3491 ret->wbio = ret->rbio;
3495 ret->server = s->server;
3496 if (s->handshake_func) {
3498 SSL_set_accept_state(ret);
3500 SSL_set_connect_state(ret);
3502 ret->shutdown = s->shutdown;
3505 ret->default_passwd_callback = s->default_passwd_callback;
3506 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3508 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3510 /* dup the cipher_list and cipher_list_by_id stacks */
3511 if (s->cipher_list != NULL) {
3512 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3515 if (s->cipher_list_by_id != NULL)
3516 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3520 /* Dup the client_CA list */
3521 if (s->ca_names != NULL) {
3522 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3525 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3526 xn = sk_X509_NAME_value(sk, i);
3527 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3540 void ssl_clear_cipher_ctx(SSL *s)
3542 if (s->enc_read_ctx != NULL) {
3543 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3544 s->enc_read_ctx = NULL;
3546 if (s->enc_write_ctx != NULL) {
3547 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3548 s->enc_write_ctx = NULL;
3550 #ifndef OPENSSL_NO_COMP
3551 COMP_CTX_free(s->expand);
3553 COMP_CTX_free(s->compress);
3558 X509 *SSL_get_certificate(const SSL *s)
3560 if (s->cert != NULL)
3561 return (s->cert->key->x509);
3566 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3568 if (s->cert != NULL)
3569 return (s->cert->key->privatekey);
3574 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3576 if (ctx->cert != NULL)
3577 return ctx->cert->key->x509;
3582 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3584 if (ctx->cert != NULL)
3585 return ctx->cert->key->privatekey;
3590 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3592 if ((s->session != NULL) && (s->session->cipher != NULL))
3593 return (s->session->cipher);
3597 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3599 #ifndef OPENSSL_NO_COMP
3600 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3606 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3608 #ifndef OPENSSL_NO_COMP
3609 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3615 int ssl_init_wbio_buffer(SSL *s)
3619 if (s->bbio != NULL) {
3620 /* Already buffered. */
3624 bbio = BIO_new(BIO_f_buffer());
3625 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3627 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3631 s->wbio = BIO_push(bbio, s->wbio);
3636 int ssl_free_wbio_buffer(SSL *s)
3638 /* callers ensure s is never null */
3639 if (s->bbio == NULL)
3642 s->wbio = BIO_pop(s->wbio);
3643 if (!ossl_assert(s->wbio != NULL))
3651 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3653 ctx->quiet_shutdown = mode;
3656 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3658 return (ctx->quiet_shutdown);
3661 void SSL_set_quiet_shutdown(SSL *s, int mode)
3663 s->quiet_shutdown = mode;
3666 int SSL_get_quiet_shutdown(const SSL *s)
3668 return (s->quiet_shutdown);
3671 void SSL_set_shutdown(SSL *s, int mode)
3676 int SSL_get_shutdown(const SSL *s)
3681 int SSL_version(const SSL *s)
3686 int SSL_client_version(const SSL *s)
3688 return s->client_version;
3691 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3696 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3699 if (ssl->ctx == ctx)
3702 ctx = ssl->session_ctx;
3703 new_cert = ssl_cert_dup(ctx->cert);
3704 if (new_cert == NULL) {
3708 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3709 ssl_cert_free(new_cert);
3713 ssl_cert_free(ssl->cert);
3714 ssl->cert = new_cert;
3717 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3718 * so setter APIs must prevent invalid lengths from entering the system.
3720 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3724 * If the session ID context matches that of the parent SSL_CTX,
3725 * inherit it from the new SSL_CTX as well. If however the context does
3726 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3727 * leave it unchanged.
3729 if ((ssl->ctx != NULL) &&
3730 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3731 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3732 ssl->sid_ctx_length = ctx->sid_ctx_length;
3733 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3736 SSL_CTX_up_ref(ctx);
3737 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3743 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3745 return (X509_STORE_set_default_paths(ctx->cert_store));
3748 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3750 X509_LOOKUP *lookup;
3752 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3755 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3757 /* Clear any errors if the default directory does not exist */
3763 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3765 X509_LOOKUP *lookup;
3767 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3771 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3773 /* Clear any errors if the default file does not exist */
3779 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3782 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3785 void SSL_set_info_callback(SSL *ssl,
3786 void (*cb) (const SSL *ssl, int type, int val))
3788 ssl->info_callback = cb;
3792 * One compiler (Diab DCC) doesn't like argument names in returned function
3795 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3798 return ssl->info_callback;
3801 void SSL_set_verify_result(SSL *ssl, long arg)
3803 ssl->verify_result = arg;
3806 long SSL_get_verify_result(const SSL *ssl)
3808 return (ssl->verify_result);
3811 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3814 return sizeof(ssl->s3->client_random);
3815 if (outlen > sizeof(ssl->s3->client_random))
3816 outlen = sizeof(ssl->s3->client_random);
3817 memcpy(out, ssl->s3->client_random, outlen);
3821 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3824 return sizeof(ssl->s3->server_random);
3825 if (outlen > sizeof(ssl->s3->server_random))
3826 outlen = sizeof(ssl->s3->server_random);
3827 memcpy(out, ssl->s3->server_random, outlen);
3831 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3832 unsigned char *out, size_t outlen)
3835 return session->master_key_length;
3836 if (outlen > session->master_key_length)
3837 outlen = session->master_key_length;
3838 memcpy(out, session->master_key, outlen);
3842 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3845 if (len > sizeof(sess->master_key))
3848 memcpy(sess->master_key, in, len);
3849 sess->master_key_length = len;
3854 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3856 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3859 void *SSL_get_ex_data(const SSL *s, int idx)
3861 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3864 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3866 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3869 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3871 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3874 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3876 return (ctx->cert_store);
3879 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3881 X509_STORE_free(ctx->cert_store);
3882 ctx->cert_store = store;
3885 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3888 X509_STORE_up_ref(store);
3889 SSL_CTX_set_cert_store(ctx, store);
3892 int SSL_want(const SSL *s)
3894 return (s->rwstate);
3898 * \brief Set the callback for generating temporary DH keys.
3899 * \param ctx the SSL context.
3900 * \param dh the callback
3903 #ifndef OPENSSL_NO_DH
3904 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3905 DH *(*dh) (SSL *ssl, int is_export,
3908 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3911 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3914 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3918 #ifndef OPENSSL_NO_PSK
3919 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3921 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3922 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3925 OPENSSL_free(ctx->cert->psk_identity_hint);
3926 if (identity_hint != NULL) {
3927 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3928 if (ctx->cert->psk_identity_hint == NULL)
3931 ctx->cert->psk_identity_hint = NULL;
3935 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3940 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3941 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3944 OPENSSL_free(s->cert->psk_identity_hint);
3945 if (identity_hint != NULL) {
3946 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3947 if (s->cert->psk_identity_hint == NULL)
3950 s->cert->psk_identity_hint = NULL;
3954 const char *SSL_get_psk_identity_hint(const SSL *s)
3956 if (s == NULL || s->session == NULL)
3958 return (s->session->psk_identity_hint);
3961 const char *SSL_get_psk_identity(const SSL *s)
3963 if (s == NULL || s->session == NULL)
3965 return (s->session->psk_identity);
3968 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
3970 s->psk_client_callback = cb;
3973 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
3975 ctx->psk_client_callback = cb;
3978 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
3980 s->psk_server_callback = cb;
3983 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
3985 ctx->psk_server_callback = cb;
3989 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
3991 s->psk_find_session_cb = cb;
3994 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
3995 SSL_psk_find_session_cb_func cb)
3997 ctx->psk_find_session_cb = cb;
4000 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4002 s->psk_use_session_cb = cb;
4005 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4006 SSL_psk_use_session_cb_func cb)
4008 ctx->psk_use_session_cb = cb;
4011 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4012 void (*cb) (int write_p, int version,
4013 int content_type, const void *buf,
4014 size_t len, SSL *ssl, void *arg))
4016 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4019 void SSL_set_msg_callback(SSL *ssl,
4020 void (*cb) (int write_p, int version,
4021 int content_type, const void *buf,
4022 size_t len, SSL *ssl, void *arg))
4024 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4027 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4028 int (*cb) (SSL *ssl,
4032 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4033 (void (*)(void))cb);
4036 void SSL_set_not_resumable_session_callback(SSL *ssl,
4037 int (*cb) (SSL *ssl,
4038 int is_forward_secure))
4040 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4041 (void (*)(void))cb);
4044 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4045 size_t (*cb) (SSL *ssl, int type,
4046 size_t len, void *arg))
4048 ctx->record_padding_cb = cb;
4051 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4053 ctx->record_padding_arg = arg;
4056 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4058 return ctx->record_padding_arg;
4061 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4063 /* block size of 0 or 1 is basically no padding */
4064 if (block_size == 1)
4065 ctx->block_padding = 0;
4066 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4067 ctx->block_padding = block_size;
4073 void SSL_set_record_padding_callback(SSL *ssl,
4074 size_t (*cb) (SSL *ssl, int type,
4075 size_t len, void *arg))
4077 ssl->record_padding_cb = cb;
4080 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4082 ssl->record_padding_arg = arg;
4085 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4087 return ssl->record_padding_arg;
4090 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4092 /* block size of 0 or 1 is basically no padding */
4093 if (block_size == 1)
4094 ssl->block_padding = 0;
4095 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4096 ssl->block_padding = block_size;
4103 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4104 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4105 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4106 * Returns the newly allocated ctx;
4109 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4111 ssl_clear_hash_ctx(hash);
4112 *hash = EVP_MD_CTX_new();
4113 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4114 EVP_MD_CTX_free(*hash);
4121 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4124 EVP_MD_CTX_free(*hash);
4128 /* Retrieve handshake hashes */
4129 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4132 EVP_MD_CTX *ctx = NULL;
4133 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4134 int hashleni = EVP_MD_CTX_size(hdgst);
4137 if (hashleni < 0 || (size_t)hashleni > outlen)
4140 ctx = EVP_MD_CTX_new();
4144 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4145 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4148 *hashlen = hashleni;
4152 EVP_MD_CTX_free(ctx);
4156 int SSL_session_reused(SSL *s)
4161 int SSL_is_server(const SSL *s)
4166 #if OPENSSL_API_COMPAT < 0x10100000L
4167 void SSL_set_debug(SSL *s, int debug)
4169 /* Old function was do-nothing anyway... */
4175 void SSL_set_security_level(SSL *s, int level)
4177 s->cert->sec_level = level;
4180 int SSL_get_security_level(const SSL *s)
4182 return s->cert->sec_level;
4185 void SSL_set_security_callback(SSL *s,
4186 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4187 int op, int bits, int nid,
4188 void *other, void *ex))
4190 s->cert->sec_cb = cb;
4193 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4194 const SSL_CTX *ctx, int op,
4195 int bits, int nid, void *other,
4197 return s->cert->sec_cb;
4200 void SSL_set0_security_ex_data(SSL *s, void *ex)
4202 s->cert->sec_ex = ex;
4205 void *SSL_get0_security_ex_data(const SSL *s)
4207 return s->cert->sec_ex;
4210 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4212 ctx->cert->sec_level = level;
4215 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4217 return ctx->cert->sec_level;
4220 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4221 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4222 int op, int bits, int nid,
4223 void *other, void *ex))
4225 ctx->cert->sec_cb = cb;
4228 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4234 return ctx->cert->sec_cb;
4237 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4239 ctx->cert->sec_ex = ex;
4242 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4244 return ctx->cert->sec_ex;
4248 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4249 * can return unsigned long, instead of the generic long return value from the
4250 * control interface.
4252 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4254 return ctx->options;
4257 unsigned long SSL_get_options(const SSL *s)
4262 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4264 return ctx->options |= op;
4267 unsigned long SSL_set_options(SSL *s, unsigned long op)
4269 return s->options |= op;
4272 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4274 return ctx->options &= ~op;
4277 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4279 return s->options &= ~op;
4282 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4284 return s->verified_chain;
4287 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4289 #ifndef OPENSSL_NO_CT
4292 * Moves SCTs from the |src| stack to the |dst| stack.
4293 * The source of each SCT will be set to |origin|.
4294 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4296 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4298 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4299 sct_source_t origin)
4305 *dst = sk_SCT_new_null();
4307 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4312 while ((sct = sk_SCT_pop(src)) != NULL) {
4313 if (SCT_set_source(sct, origin) != 1)
4316 if (sk_SCT_push(*dst, sct) <= 0)
4324 sk_SCT_push(src, sct); /* Put the SCT back */
4329 * Look for data collected during ServerHello and parse if found.
4330 * Returns the number of SCTs extracted.
4332 static int ct_extract_tls_extension_scts(SSL *s)
4334 int scts_extracted = 0;
4336 if (s->ext.scts != NULL) {
4337 const unsigned char *p = s->ext.scts;
4338 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4340 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4342 SCT_LIST_free(scts);
4345 return scts_extracted;
4349 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4350 * contains an SCT X509 extension. They will be stored in |s->scts|.
4352 * - The number of SCTs extracted, assuming an OCSP response exists.
4353 * - 0 if no OCSP response exists or it contains no SCTs.
4354 * - A negative integer if an error occurs.
4356 static int ct_extract_ocsp_response_scts(SSL *s)
4358 # ifndef OPENSSL_NO_OCSP
4359 int scts_extracted = 0;
4360 const unsigned char *p;
4361 OCSP_BASICRESP *br = NULL;
4362 OCSP_RESPONSE *rsp = NULL;
4363 STACK_OF(SCT) *scts = NULL;
4366 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4369 p = s->ext.ocsp.resp;
4370 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4374 br = OCSP_response_get1_basic(rsp);
4378 for (i = 0; i < OCSP_resp_count(br); ++i) {
4379 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4385 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4387 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4388 if (scts_extracted < 0)
4392 SCT_LIST_free(scts);
4393 OCSP_BASICRESP_free(br);
4394 OCSP_RESPONSE_free(rsp);
4395 return scts_extracted;
4397 /* Behave as if no OCSP response exists */
4403 * Attempts to extract SCTs from the peer certificate.
4404 * Return the number of SCTs extracted, or a negative integer if an error
4407 static int ct_extract_x509v3_extension_scts(SSL *s)
4409 int scts_extracted = 0;
4410 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4413 STACK_OF(SCT) *scts =
4414 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4417 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4419 SCT_LIST_free(scts);
4422 return scts_extracted;
4426 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4427 * response (if it exists) and X509v3 extensions in the certificate.
4428 * Returns NULL if an error occurs.
4430 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4432 if (!s->scts_parsed) {
4433 if (ct_extract_tls_extension_scts(s) < 0 ||
4434 ct_extract_ocsp_response_scts(s) < 0 ||
4435 ct_extract_x509v3_extension_scts(s) < 0)
4445 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4446 const STACK_OF(SCT) *scts, void *unused_arg)
4451 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4452 const STACK_OF(SCT) *scts, void *unused_arg)
4454 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4457 for (i = 0; i < count; ++i) {
4458 SCT *sct = sk_SCT_value(scts, i);
4459 int status = SCT_get_validation_status(sct);
4461 if (status == SCT_VALIDATION_STATUS_VALID)
4464 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4468 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4472 * Since code exists that uses the custom extension handler for CT, look
4473 * for this and throw an error if they have already registered to use CT.
4475 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4476 TLSEXT_TYPE_signed_certificate_timestamp))
4478 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4479 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4483 if (callback != NULL) {
4485 * If we are validating CT, then we MUST accept SCTs served via OCSP
4487 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4491 s->ct_validation_callback = callback;
4492 s->ct_validation_callback_arg = arg;
4497 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4498 ssl_ct_validation_cb callback, void *arg)
4501 * Since code exists that uses the custom extension handler for CT, look for
4502 * this and throw an error if they have already registered to use CT.
4504 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4505 TLSEXT_TYPE_signed_certificate_timestamp))
4507 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4508 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4512 ctx->ct_validation_callback = callback;
4513 ctx->ct_validation_callback_arg = arg;
4517 int SSL_ct_is_enabled(const SSL *s)
4519 return s->ct_validation_callback != NULL;
4522 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4524 return ctx->ct_validation_callback != NULL;
4527 int ssl_validate_ct(SSL *s)
4530 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4532 SSL_DANE *dane = &s->dane;
4533 CT_POLICY_EVAL_CTX *ctx = NULL;
4534 const STACK_OF(SCT) *scts;
4537 * If no callback is set, the peer is anonymous, or its chain is invalid,
4538 * skip SCT validation - just return success. Applications that continue
4539 * handshakes without certificates, with unverified chains, or pinned leaf
4540 * certificates are outside the scope of the WebPKI and CT.
4542 * The above exclusions notwithstanding the vast majority of peers will
4543 * have rather ordinary certificate chains validated by typical
4544 * applications that perform certificate verification and therefore will
4545 * process SCTs when enabled.
4547 if (s->ct_validation_callback == NULL || cert == NULL ||
4548 s->verify_result != X509_V_OK ||
4549 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4553 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4554 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4556 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4557 switch (dane->mtlsa->usage) {
4558 case DANETLS_USAGE_DANE_TA:
4559 case DANETLS_USAGE_DANE_EE:
4564 ctx = CT_POLICY_EVAL_CTX_new();
4566 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4570 issuer = sk_X509_value(s->verified_chain, 1);
4571 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4572 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4573 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4574 CT_POLICY_EVAL_CTX_set_time(
4575 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4577 scts = SSL_get0_peer_scts(s);
4580 * This function returns success (> 0) only when all the SCTs are valid, 0
4581 * when some are invalid, and < 0 on various internal errors (out of
4582 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4583 * reason to abort the handshake, that decision is up to the callback.
4584 * Therefore, we error out only in the unexpected case that the return
4585 * value is negative.
4587 * XXX: One might well argue that the return value of this function is an
4588 * unfortunate design choice. Its job is only to determine the validation
4589 * status of each of the provided SCTs. So long as it correctly separates
4590 * the wheat from the chaff it should return success. Failure in this case
4591 * ought to correspond to an inability to carry out its duties.
4593 if (SCT_LIST_validate(scts, ctx) < 0) {
4594 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4598 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4600 ret = 0; /* This function returns 0 on failure */
4603 CT_POLICY_EVAL_CTX_free(ctx);
4605 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4606 * failure return code here. Also the application may wish the complete
4607 * the handshake, and then disconnect cleanly at a higher layer, after
4608 * checking the verification status of the completed connection.
4610 * We therefore force a certificate verification failure which will be
4611 * visible via SSL_get_verify_result() and cached as part of any resumed
4614 * Note: the permissive callback is for information gathering only, always
4615 * returns success, and does not affect verification status. Only the
4616 * strict callback or a custom application-specified callback can trigger
4617 * connection failure or record a verification error.
4620 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4624 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4626 switch (validation_mode) {
4628 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4630 case SSL_CT_VALIDATION_PERMISSIVE:
4631 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4632 case SSL_CT_VALIDATION_STRICT:
4633 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4637 int SSL_enable_ct(SSL *s, int validation_mode)
4639 switch (validation_mode) {
4641 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4643 case SSL_CT_VALIDATION_PERMISSIVE:
4644 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4645 case SSL_CT_VALIDATION_STRICT:
4646 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4650 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4652 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4655 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4657 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4660 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4662 CTLOG_STORE_free(ctx->ctlog_store);
4663 ctx->ctlog_store = logs;
4666 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4668 return ctx->ctlog_store;
4671 #endif /* OPENSSL_NO_CT */
4673 void SSL_CTX_set_early_cb(SSL_CTX *c, SSL_early_cb_fn cb, void *arg)
4676 c->early_cb_arg = arg;
4679 int SSL_early_isv2(SSL *s)
4681 if (s->clienthello == NULL)
4683 return s->clienthello->isv2;
4686 unsigned int SSL_early_get0_legacy_version(SSL *s)
4688 if (s->clienthello == NULL)
4690 return s->clienthello->legacy_version;
4693 size_t SSL_early_get0_random(SSL *s, const unsigned char **out)
4695 if (s->clienthello == NULL)
4698 *out = s->clienthello->random;
4699 return SSL3_RANDOM_SIZE;
4702 size_t SSL_early_get0_session_id(SSL *s, const unsigned char **out)
4704 if (s->clienthello == NULL)
4707 *out = s->clienthello->session_id;
4708 return s->clienthello->session_id_len;
4711 size_t SSL_early_get0_ciphers(SSL *s, const unsigned char **out)
4713 if (s->clienthello == NULL)
4716 *out = PACKET_data(&s->clienthello->ciphersuites);
4717 return PACKET_remaining(&s->clienthello->ciphersuites);
4720 size_t SSL_early_get0_compression_methods(SSL *s, const unsigned char **out)
4722 if (s->clienthello == NULL)
4725 *out = s->clienthello->compressions;
4726 return s->clienthello->compressions_len;
4729 int SSL_early_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4735 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4737 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4738 ext = s->clienthello->pre_proc_exts + i;
4742 present = OPENSSL_malloc(sizeof(*present) * num);
4743 if (present == NULL)
4745 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4746 ext = s->clienthello->pre_proc_exts + i;
4748 if (ext->received_order >= num)
4750 present[ext->received_order] = ext->type;
4757 OPENSSL_free(present);
4761 int SSL_early_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4767 if (s->clienthello == NULL)
4769 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4770 r = s->clienthello->pre_proc_exts + i;
4771 if (r->present && r->type == type) {
4773 *out = PACKET_data(&r->data);
4775 *outlen = PACKET_remaining(&r->data);
4782 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4784 ctx->keylog_callback = cb;
4787 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4789 return ctx->keylog_callback;
4792 static int nss_keylog_int(const char *prefix,
4794 const uint8_t *parameter_1,
4795 size_t parameter_1_len,
4796 const uint8_t *parameter_2,
4797 size_t parameter_2_len)
4800 char *cursor = NULL;
4805 if (ssl->ctx->keylog_callback == NULL) return 1;
4808 * Our output buffer will contain the following strings, rendered with
4809 * space characters in between, terminated by a NULL character: first the
4810 * prefix, then the first parameter, then the second parameter. The
4811 * meaning of each parameter depends on the specific key material being
4812 * logged. Note that the first and second parameters are encoded in
4813 * hexadecimal, so we need a buffer that is twice their lengths.
4815 prefix_len = strlen(prefix);
4816 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4817 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4818 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4822 strcpy(cursor, prefix);
4823 cursor += prefix_len;
4826 for (i = 0; i < parameter_1_len; i++) {
4827 sprintf(cursor, "%02x", parameter_1[i]);
4832 for (i = 0; i < parameter_2_len; i++) {
4833 sprintf(cursor, "%02x", parameter_2[i]);
4838 ssl->ctx->keylog_callback(ssl, (const char *)out);
4844 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4845 const uint8_t *encrypted_premaster,
4846 size_t encrypted_premaster_len,
4847 const uint8_t *premaster,
4848 size_t premaster_len)
4850 if (encrypted_premaster_len < 8) {
4851 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4855 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4856 return nss_keylog_int("RSA",
4858 encrypted_premaster,
4864 int ssl_log_secret(SSL *ssl,
4866 const uint8_t *secret,
4869 return nss_keylog_int(label,
4871 ssl->s3->client_random,
4877 #define SSLV2_CIPHER_LEN 3
4879 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4884 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4886 if (PACKET_remaining(cipher_suites) == 0) {
4887 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4888 *al = SSL_AD_ILLEGAL_PARAMETER;
4892 if (PACKET_remaining(cipher_suites) % n != 0) {
4893 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4894 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4895 *al = SSL_AD_DECODE_ERROR;
4899 OPENSSL_free(s->s3->tmp.ciphers_raw);
4900 s->s3->tmp.ciphers_raw = NULL;
4901 s->s3->tmp.ciphers_rawlen = 0;
4904 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4905 PACKET sslv2ciphers = *cipher_suites;
4906 unsigned int leadbyte;
4910 * We store the raw ciphers list in SSLv3+ format so we need to do some
4911 * preprocessing to convert the list first. If there are any SSLv2 only
4912 * ciphersuites with a non-zero leading byte then we are going to
4913 * slightly over allocate because we won't store those. But that isn't a
4916 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4917 s->s3->tmp.ciphers_raw = raw;
4919 *al = SSL_AD_INTERNAL_ERROR;
4922 for (s->s3->tmp.ciphers_rawlen = 0;
4923 PACKET_remaining(&sslv2ciphers) > 0;
4924 raw += TLS_CIPHER_LEN) {
4925 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4927 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4930 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4931 *al = SSL_AD_DECODE_ERROR;
4932 OPENSSL_free(s->s3->tmp.ciphers_raw);
4933 s->s3->tmp.ciphers_raw = NULL;
4934 s->s3->tmp.ciphers_rawlen = 0;
4938 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
4940 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
4941 &s->s3->tmp.ciphers_rawlen)) {
4942 *al = SSL_AD_INTERNAL_ERROR;
4950 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
4951 int isv2format, STACK_OF(SSL_CIPHER) **sk,
4952 STACK_OF(SSL_CIPHER) **scsvs)
4957 if (!PACKET_buf_init(&pkt, bytes, len))
4959 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
4962 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
4963 STACK_OF(SSL_CIPHER) **skp,
4964 STACK_OF(SSL_CIPHER) **scsvs_out,
4965 int sslv2format, int *al)
4967 const SSL_CIPHER *c;
4968 STACK_OF(SSL_CIPHER) *sk = NULL;
4969 STACK_OF(SSL_CIPHER) *scsvs = NULL;
4971 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4972 unsigned char cipher[SSLV2_CIPHER_LEN];
4974 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4976 if (PACKET_remaining(cipher_suites) == 0) {
4977 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
4978 *al = SSL_AD_ILLEGAL_PARAMETER;
4982 if (PACKET_remaining(cipher_suites) % n != 0) {
4983 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
4984 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4985 *al = SSL_AD_DECODE_ERROR;
4989 sk = sk_SSL_CIPHER_new_null();
4990 scsvs = sk_SSL_CIPHER_new_null();
4991 if (sk == NULL || scsvs == NULL) {
4992 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
4993 *al = SSL_AD_INTERNAL_ERROR;
4997 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
4999 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5000 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5001 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5003 if (sslv2format && cipher[0] != '\0')
5006 /* For SSLv2-compat, ignore leading 0-byte. */
5007 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5009 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5010 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5011 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5012 *al = SSL_AD_INTERNAL_ERROR;
5017 if (PACKET_remaining(cipher_suites) > 0) {
5018 *al = SSL_AD_DECODE_ERROR;
5019 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5026 sk_SSL_CIPHER_free(sk);
5027 if (scsvs_out != NULL)
5030 sk_SSL_CIPHER_free(scsvs);
5033 sk_SSL_CIPHER_free(sk);
5034 sk_SSL_CIPHER_free(scsvs);
5038 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5040 ctx->max_early_data = max_early_data;
5045 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5047 return ctx->max_early_data;
5050 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5052 s->max_early_data = max_early_data;
5057 uint32_t SSL_get_max_early_data(const SSL *s)
5059 return s->max_early_data;