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
571 if (s->method != s->ctx->method) {
572 s->method->ssl_free(s);
573 s->method = s->ctx->method;
574 if (!s->method->ssl_new(s))
577 if (!s->method->ssl_clear(s))
581 RECORD_LAYER_clear(&s->rlayer);
586 /** Used to change an SSL_CTXs default SSL method type */
587 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
589 STACK_OF(SSL_CIPHER) *sk;
593 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
594 &(ctx->cipher_list_by_id),
595 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
596 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
597 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
603 SSL *SSL_new(SSL_CTX *ctx)
608 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
611 if (ctx->method == NULL) {
612 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
616 s = OPENSSL_zalloc(sizeof(*s));
620 s->lock = CRYPTO_THREAD_lock_new();
621 if (s->lock == NULL) {
622 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
627 RECORD_LAYER_init(&s->rlayer, s);
629 s->options = ctx->options;
630 s->dane.flags = ctx->dane.flags;
631 s->min_proto_version = ctx->min_proto_version;
632 s->max_proto_version = ctx->max_proto_version;
634 s->max_cert_list = ctx->max_cert_list;
636 s->max_early_data = ctx->max_early_data;
639 * Earlier library versions used to copy the pointer to the CERT, not
640 * its contents; only when setting new parameters for the per-SSL
641 * copy, ssl_cert_new would be called (and the direct reference to
642 * the per-SSL_CTX settings would be lost, but those still were
643 * indirectly accessed for various purposes, and for that reason they
644 * used to be known as s->ctx->default_cert). Now we don't look at the
645 * SSL_CTX's CERT after having duplicated it once.
647 s->cert = ssl_cert_dup(ctx->cert);
651 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
652 s->msg_callback = ctx->msg_callback;
653 s->msg_callback_arg = ctx->msg_callback_arg;
654 s->verify_mode = ctx->verify_mode;
655 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
656 s->record_padding_cb = ctx->record_padding_cb;
657 s->record_padding_arg = ctx->record_padding_arg;
658 s->block_padding = ctx->block_padding;
659 s->sid_ctx_length = ctx->sid_ctx_length;
660 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
662 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
663 s->verify_callback = ctx->default_verify_callback;
664 s->generate_session_id = ctx->generate_session_id;
666 s->param = X509_VERIFY_PARAM_new();
667 if (s->param == NULL)
669 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
670 s->quiet_shutdown = ctx->quiet_shutdown;
671 s->max_send_fragment = ctx->max_send_fragment;
672 s->split_send_fragment = ctx->split_send_fragment;
673 s->max_pipelines = ctx->max_pipelines;
674 if (s->max_pipelines > 1)
675 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
676 if (ctx->default_read_buf_len > 0)
677 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
682 s->ext.debug_arg = NULL;
683 s->ext.ticket_expected = 0;
684 s->ext.status_type = ctx->ext.status_type;
685 s->ext.status_expected = 0;
686 s->ext.ocsp.ids = NULL;
687 s->ext.ocsp.exts = NULL;
688 s->ext.ocsp.resp = NULL;
689 s->ext.ocsp.resp_len = 0;
691 s->session_ctx = ctx;
692 #ifndef OPENSSL_NO_EC
693 if (ctx->ext.ecpointformats) {
694 s->ext.ecpointformats =
695 OPENSSL_memdup(ctx->ext.ecpointformats,
696 ctx->ext.ecpointformats_len);
697 if (!s->ext.ecpointformats)
699 s->ext.ecpointformats_len =
700 ctx->ext.ecpointformats_len;
702 if (ctx->ext.supportedgroups) {
703 s->ext.supportedgroups =
704 OPENSSL_memdup(ctx->ext.supportedgroups,
705 ctx->ext.supportedgroups_len);
706 if (!s->ext.supportedgroups)
708 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
711 #ifndef OPENSSL_NO_NEXTPROTONEG
715 if (s->ctx->ext.alpn) {
716 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
717 if (s->ext.alpn == NULL)
719 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
720 s->ext.alpn_len = s->ctx->ext.alpn_len;
723 s->verified_chain = NULL;
724 s->verify_result = X509_V_OK;
726 s->default_passwd_callback = ctx->default_passwd_callback;
727 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
729 s->method = ctx->method;
731 s->key_update = SSL_KEY_UPDATE_NONE;
733 if (!s->method->ssl_new(s))
736 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
741 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
744 #ifndef OPENSSL_NO_PSK
745 s->psk_client_callback = ctx->psk_client_callback;
746 s->psk_server_callback = ctx->psk_server_callback;
748 s->psk_find_session_cb = ctx->psk_find_session_cb;
749 s->psk_use_session_cb = ctx->psk_use_session_cb;
753 #ifndef OPENSSL_NO_CT
754 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
755 ctx->ct_validation_callback_arg))
762 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
766 int SSL_is_dtls(const SSL *s)
768 return SSL_IS_DTLS(s) ? 1 : 0;
771 int SSL_up_ref(SSL *s)
775 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
778 REF_PRINT_COUNT("SSL", s);
779 REF_ASSERT_ISNT(i < 2);
780 return ((i > 1) ? 1 : 0);
783 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
784 unsigned int sid_ctx_len)
786 if (sid_ctx_len > sizeof ctx->sid_ctx) {
787 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
788 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
791 ctx->sid_ctx_length = sid_ctx_len;
792 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
797 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
798 unsigned int sid_ctx_len)
800 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
801 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
802 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
805 ssl->sid_ctx_length = sid_ctx_len;
806 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
811 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
813 CRYPTO_THREAD_write_lock(ctx->lock);
814 ctx->generate_session_id = cb;
815 CRYPTO_THREAD_unlock(ctx->lock);
819 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
821 CRYPTO_THREAD_write_lock(ssl->lock);
822 ssl->generate_session_id = cb;
823 CRYPTO_THREAD_unlock(ssl->lock);
827 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
831 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
832 * we can "construct" a session to give us the desired check - i.e. to
833 * find if there's a session in the hash table that would conflict with
834 * any new session built out of this id/id_len and the ssl_version in use
839 if (id_len > sizeof r.session_id)
842 r.ssl_version = ssl->version;
843 r.session_id_length = id_len;
844 memcpy(r.session_id, id, id_len);
846 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
847 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
848 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
852 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
854 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
857 int SSL_set_purpose(SSL *s, int purpose)
859 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
862 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
864 return X509_VERIFY_PARAM_set_trust(s->param, trust);
867 int SSL_set_trust(SSL *s, int trust)
869 return X509_VERIFY_PARAM_set_trust(s->param, trust);
872 int SSL_set1_host(SSL *s, const char *hostname)
874 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
877 int SSL_add1_host(SSL *s, const char *hostname)
879 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
882 void SSL_set_hostflags(SSL *s, unsigned int flags)
884 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
887 const char *SSL_get0_peername(SSL *s)
889 return X509_VERIFY_PARAM_get0_peername(s->param);
892 int SSL_CTX_dane_enable(SSL_CTX *ctx)
894 return dane_ctx_enable(&ctx->dane);
897 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
899 unsigned long orig = ctx->dane.flags;
901 ctx->dane.flags |= flags;
905 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
907 unsigned long orig = ctx->dane.flags;
909 ctx->dane.flags &= ~flags;
913 int SSL_dane_enable(SSL *s, const char *basedomain)
915 SSL_DANE *dane = &s->dane;
917 if (s->ctx->dane.mdmax == 0) {
918 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
921 if (dane->trecs != NULL) {
922 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
927 * Default SNI name. This rejects empty names, while set1_host below
928 * accepts them and disables host name checks. To avoid side-effects with
929 * invalid input, set the SNI name first.
931 if (s->ext.hostname == NULL) {
932 if (!SSL_set_tlsext_host_name(s, basedomain)) {
933 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
938 /* Primary RFC6125 reference identifier */
939 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
940 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
946 dane->dctx = &s->ctx->dane;
947 dane->trecs = sk_danetls_record_new_null();
949 if (dane->trecs == NULL) {
950 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
956 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
958 unsigned long orig = ssl->dane.flags;
960 ssl->dane.flags |= flags;
964 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
966 unsigned long orig = ssl->dane.flags;
968 ssl->dane.flags &= ~flags;
972 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
974 SSL_DANE *dane = &s->dane;
976 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
980 *mcert = dane->mcert;
982 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
987 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
988 uint8_t *mtype, unsigned const char **data, size_t *dlen)
990 SSL_DANE *dane = &s->dane;
992 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
996 *usage = dane->mtlsa->usage;
998 *selector = dane->mtlsa->selector;
1000 *mtype = dane->mtlsa->mtype;
1002 *data = dane->mtlsa->data;
1004 *dlen = dane->mtlsa->dlen;
1009 SSL_DANE *SSL_get0_dane(SSL *s)
1014 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1015 uint8_t mtype, unsigned char *data, size_t dlen)
1017 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1020 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1023 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1026 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1028 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1031 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1033 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1036 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1041 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1046 void SSL_certs_clear(SSL *s)
1048 ssl_cert_clear_certs(s->cert);
1051 void SSL_free(SSL *s)
1058 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1059 REF_PRINT_COUNT("SSL", s);
1062 REF_ASSERT_ISNT(i < 0);
1064 X509_VERIFY_PARAM_free(s->param);
1065 dane_final(&s->dane);
1066 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1068 /* Ignore return value */
1069 ssl_free_wbio_buffer(s);
1071 BIO_free_all(s->wbio);
1072 BIO_free_all(s->rbio);
1074 BUF_MEM_free(s->init_buf);
1076 /* add extra stuff */
1077 sk_SSL_CIPHER_free(s->cipher_list);
1078 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1080 /* Make the next call work :-) */
1081 if (s->session != NULL) {
1082 ssl_clear_bad_session(s);
1083 SSL_SESSION_free(s->session);
1085 SSL_SESSION_free(s->psksession);
1089 ssl_cert_free(s->cert);
1090 /* Free up if allocated */
1092 OPENSSL_free(s->ext.hostname);
1093 SSL_CTX_free(s->session_ctx);
1094 #ifndef OPENSSL_NO_EC
1095 OPENSSL_free(s->ext.ecpointformats);
1096 OPENSSL_free(s->ext.supportedgroups);
1097 #endif /* OPENSSL_NO_EC */
1098 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1099 #ifndef OPENSSL_NO_OCSP
1100 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1102 #ifndef OPENSSL_NO_CT
1103 SCT_LIST_free(s->scts);
1104 OPENSSL_free(s->ext.scts);
1106 OPENSSL_free(s->ext.ocsp.resp);
1107 OPENSSL_free(s->ext.alpn);
1108 OPENSSL_free(s->ext.tls13_cookie);
1109 OPENSSL_free(s->clienthello);
1111 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1113 sk_X509_pop_free(s->verified_chain, X509_free);
1115 if (s->method != NULL)
1116 s->method->ssl_free(s);
1118 RECORD_LAYER_release(&s->rlayer);
1120 SSL_CTX_free(s->ctx);
1122 ASYNC_WAIT_CTX_free(s->waitctx);
1124 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1125 OPENSSL_free(s->ext.npn);
1128 #ifndef OPENSSL_NO_SRTP
1129 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1132 CRYPTO_THREAD_lock_free(s->lock);
1137 void SSL_set0_rbio(SSL *s, BIO *rbio)
1139 BIO_free_all(s->rbio);
1143 void SSL_set0_wbio(SSL *s, BIO *wbio)
1146 * If the output buffering BIO is still in place, remove it
1148 if (s->bbio != NULL)
1149 s->wbio = BIO_pop(s->wbio);
1151 BIO_free_all(s->wbio);
1154 /* Re-attach |bbio| to the new |wbio|. */
1155 if (s->bbio != NULL)
1156 s->wbio = BIO_push(s->bbio, s->wbio);
1159 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1162 * For historical reasons, this function has many different cases in
1163 * ownership handling.
1166 /* If nothing has changed, do nothing */
1167 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1171 * If the two arguments are equal then one fewer reference is granted by the
1172 * caller than we want to take
1174 if (rbio != NULL && rbio == wbio)
1178 * If only the wbio is changed only adopt one reference.
1180 if (rbio == SSL_get_rbio(s)) {
1181 SSL_set0_wbio(s, wbio);
1185 * There is an asymmetry here for historical reasons. If only the rbio is
1186 * changed AND the rbio and wbio were originally different, then we only
1187 * adopt one reference.
1189 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1190 SSL_set0_rbio(s, rbio);
1194 /* Otherwise, adopt both references. */
1195 SSL_set0_rbio(s, rbio);
1196 SSL_set0_wbio(s, wbio);
1199 BIO *SSL_get_rbio(const SSL *s)
1204 BIO *SSL_get_wbio(const SSL *s)
1206 if (s->bbio != NULL) {
1208 * If |bbio| is active, the true caller-configured BIO is its
1211 return BIO_next(s->bbio);
1216 int SSL_get_fd(const SSL *s)
1218 return SSL_get_rfd(s);
1221 int SSL_get_rfd(const SSL *s)
1226 b = SSL_get_rbio(s);
1227 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1229 BIO_get_fd(r, &ret);
1233 int SSL_get_wfd(const SSL *s)
1238 b = SSL_get_wbio(s);
1239 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1241 BIO_get_fd(r, &ret);
1245 #ifndef OPENSSL_NO_SOCK
1246 int SSL_set_fd(SSL *s, int fd)
1251 bio = BIO_new(BIO_s_socket());
1254 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1257 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1258 SSL_set_bio(s, bio, bio);
1264 int SSL_set_wfd(SSL *s, int fd)
1266 BIO *rbio = SSL_get_rbio(s);
1268 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1269 || (int)BIO_get_fd(rbio, NULL) != fd) {
1270 BIO *bio = BIO_new(BIO_s_socket());
1273 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1276 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1277 SSL_set0_wbio(s, bio);
1280 SSL_set0_wbio(s, rbio);
1285 int SSL_set_rfd(SSL *s, int fd)
1287 BIO *wbio = SSL_get_wbio(s);
1289 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1290 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1291 BIO *bio = BIO_new(BIO_s_socket());
1294 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1297 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1298 SSL_set0_rbio(s, bio);
1301 SSL_set0_rbio(s, wbio);
1308 /* return length of latest Finished message we sent, copy to 'buf' */
1309 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1313 if (s->s3 != NULL) {
1314 ret = s->s3->tmp.finish_md_len;
1317 memcpy(buf, s->s3->tmp.finish_md, count);
1322 /* return length of latest Finished message we expected, copy to 'buf' */
1323 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1327 if (s->s3 != NULL) {
1328 ret = s->s3->tmp.peer_finish_md_len;
1331 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1336 int SSL_get_verify_mode(const SSL *s)
1338 return (s->verify_mode);
1341 int SSL_get_verify_depth(const SSL *s)
1343 return X509_VERIFY_PARAM_get_depth(s->param);
1346 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1347 return (s->verify_callback);
1350 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1352 return (ctx->verify_mode);
1355 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1357 return X509_VERIFY_PARAM_get_depth(ctx->param);
1360 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1361 return (ctx->default_verify_callback);
1364 void SSL_set_verify(SSL *s, int mode,
1365 int (*callback) (int ok, X509_STORE_CTX *ctx))
1367 s->verify_mode = mode;
1368 if (callback != NULL)
1369 s->verify_callback = callback;
1372 void SSL_set_verify_depth(SSL *s, int depth)
1374 X509_VERIFY_PARAM_set_depth(s->param, depth);
1377 void SSL_set_read_ahead(SSL *s, int yes)
1379 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1382 int SSL_get_read_ahead(const SSL *s)
1384 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1387 int SSL_pending(const SSL *s)
1389 size_t pending = s->method->ssl_pending(s);
1392 * SSL_pending cannot work properly if read-ahead is enabled
1393 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1394 * impossible to fix since SSL_pending cannot report errors that may be
1395 * observed while scanning the new data. (Note that SSL_pending() is
1396 * often used as a boolean value, so we'd better not return -1.)
1398 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1399 * we just return INT_MAX.
1401 return pending < INT_MAX ? (int)pending : INT_MAX;
1404 int SSL_has_pending(const SSL *s)
1407 * Similar to SSL_pending() but returns a 1 to indicate that we have
1408 * unprocessed data available or 0 otherwise (as opposed to the number of
1409 * bytes available). Unlike SSL_pending() this will take into account
1410 * read_ahead data. A 1 return simply indicates that we have unprocessed
1411 * data. That data may not result in any application data, or we may fail
1412 * to parse the records for some reason.
1414 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1417 return RECORD_LAYER_read_pending(&s->rlayer);
1420 X509 *SSL_get_peer_certificate(const SSL *s)
1424 if ((s == NULL) || (s->session == NULL))
1427 r = s->session->peer;
1437 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1441 if ((s == NULL) || (s->session == NULL))
1444 r = s->session->peer_chain;
1447 * If we are a client, cert_chain includes the peer's own certificate; if
1448 * we are a server, it does not.
1455 * Now in theory, since the calling process own 't' it should be safe to
1456 * modify. We need to be able to read f without being hassled
1458 int SSL_copy_session_id(SSL *t, const SSL *f)
1461 /* Do we need to to SSL locking? */
1462 if (!SSL_set_session(t, SSL_get_session(f))) {
1467 * what if we are setup for one protocol version but want to talk another
1469 if (t->method != f->method) {
1470 t->method->ssl_free(t);
1471 t->method = f->method;
1472 if (t->method->ssl_new(t) == 0)
1476 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1477 ssl_cert_free(t->cert);
1479 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1486 /* Fix this so it checks all the valid key/cert options */
1487 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1489 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1490 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1493 if (ctx->cert->key->privatekey == NULL) {
1494 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1497 return (X509_check_private_key
1498 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1501 /* Fix this function so that it takes an optional type parameter */
1502 int SSL_check_private_key(const SSL *ssl)
1505 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1508 if (ssl->cert->key->x509 == NULL) {
1509 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1512 if (ssl->cert->key->privatekey == NULL) {
1513 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1516 return (X509_check_private_key(ssl->cert->key->x509,
1517 ssl->cert->key->privatekey));
1520 int SSL_waiting_for_async(SSL *s)
1528 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1530 ASYNC_WAIT_CTX *ctx = s->waitctx;
1534 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1537 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1538 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1540 ASYNC_WAIT_CTX *ctx = s->waitctx;
1544 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1548 int SSL_accept(SSL *s)
1550 if (s->handshake_func == NULL) {
1551 /* Not properly initialized yet */
1552 SSL_set_accept_state(s);
1555 return SSL_do_handshake(s);
1558 int SSL_connect(SSL *s)
1560 if (s->handshake_func == NULL) {
1561 /* Not properly initialized yet */
1562 SSL_set_connect_state(s);
1565 return SSL_do_handshake(s);
1568 long SSL_get_default_timeout(const SSL *s)
1570 return (s->method->get_timeout());
1573 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1574 int (*func) (void *))
1577 if (s->waitctx == NULL) {
1578 s->waitctx = ASYNC_WAIT_CTX_new();
1579 if (s->waitctx == NULL)
1582 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1583 sizeof(struct ssl_async_args))) {
1585 s->rwstate = SSL_NOTHING;
1586 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1589 s->rwstate = SSL_ASYNC_PAUSED;
1592 s->rwstate = SSL_ASYNC_NO_JOBS;
1598 s->rwstate = SSL_NOTHING;
1599 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1600 /* Shouldn't happen */
1605 static int ssl_io_intern(void *vargs)
1607 struct ssl_async_args *args;
1612 args = (struct ssl_async_args *)vargs;
1616 switch (args->type) {
1618 return args->f.func_read(s, buf, num, &s->asyncrw);
1620 return args->f.func_write(s, buf, num, &s->asyncrw);
1622 return args->f.func_other(s);
1627 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1629 if (s->handshake_func == NULL) {
1630 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1634 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1635 s->rwstate = SSL_NOTHING;
1639 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1640 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1641 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1645 * If we are a client and haven't received the ServerHello etc then we
1648 ossl_statem_check_finish_init(s, 0);
1650 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1651 struct ssl_async_args args;
1657 args.type = READFUNC;
1658 args.f.func_read = s->method->ssl_read;
1660 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1661 *readbytes = s->asyncrw;
1664 return s->method->ssl_read(s, buf, num, readbytes);
1668 int SSL_read(SSL *s, void *buf, int num)
1674 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1678 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1681 * The cast is safe here because ret should be <= INT_MAX because num is
1685 ret = (int)readbytes;
1690 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1692 int ret = ssl_read_internal(s, buf, num, readbytes);
1699 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1704 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1705 return SSL_READ_EARLY_DATA_ERROR;
1708 switch (s->early_data_state) {
1709 case SSL_EARLY_DATA_NONE:
1710 if (!SSL_in_before(s)) {
1711 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1712 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1713 return SSL_READ_EARLY_DATA_ERROR;
1717 case SSL_EARLY_DATA_ACCEPT_RETRY:
1718 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1719 ret = SSL_accept(s);
1722 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1723 return SSL_READ_EARLY_DATA_ERROR;
1727 case SSL_EARLY_DATA_READ_RETRY:
1728 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1729 s->early_data_state = SSL_EARLY_DATA_READING;
1730 ret = SSL_read_ex(s, buf, num, readbytes);
1732 * State machine will update early_data_state to
1733 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1736 if (ret > 0 || (ret <= 0 && s->early_data_state
1737 != SSL_EARLY_DATA_FINISHED_READING)) {
1738 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1739 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1740 : SSL_READ_EARLY_DATA_ERROR;
1743 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1746 return SSL_READ_EARLY_DATA_FINISH;
1749 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1750 return SSL_READ_EARLY_DATA_ERROR;
1754 int SSL_get_early_data_status(const SSL *s)
1756 return s->ext.early_data;
1759 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1761 if (s->handshake_func == NULL) {
1762 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1766 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1769 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1770 struct ssl_async_args args;
1776 args.type = READFUNC;
1777 args.f.func_read = s->method->ssl_peek;
1779 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1780 *readbytes = s->asyncrw;
1783 return s->method->ssl_peek(s, buf, num, readbytes);
1787 int SSL_peek(SSL *s, void *buf, int num)
1793 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1797 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1800 * The cast is safe here because ret should be <= INT_MAX because num is
1804 ret = (int)readbytes;
1810 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1812 int ret = ssl_peek_internal(s, buf, num, readbytes);
1819 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1821 if (s->handshake_func == NULL) {
1822 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1826 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1827 s->rwstate = SSL_NOTHING;
1828 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1832 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1833 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1834 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1835 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1838 /* If we are a client and haven't sent the Finished we better do that */
1839 ossl_statem_check_finish_init(s, 1);
1841 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1843 struct ssl_async_args args;
1846 args.buf = (void *)buf;
1848 args.type = WRITEFUNC;
1849 args.f.func_write = s->method->ssl_write;
1851 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1852 *written = s->asyncrw;
1855 return s->method->ssl_write(s, buf, num, written);
1859 int SSL_write(SSL *s, const void *buf, int num)
1865 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1869 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1872 * The cast is safe here because ret should be <= INT_MAX because num is
1881 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1883 int ret = ssl_write_internal(s, buf, num, written);
1890 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1892 int ret, early_data_state;
1894 switch (s->early_data_state) {
1895 case SSL_EARLY_DATA_NONE:
1897 || !SSL_in_before(s)
1898 || s->session == NULL
1899 || s->session->ext.max_early_data == 0) {
1900 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1901 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1906 case SSL_EARLY_DATA_CONNECT_RETRY:
1907 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1908 ret = SSL_connect(s);
1911 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1916 case SSL_EARLY_DATA_WRITE_RETRY:
1917 s->early_data_state = SSL_EARLY_DATA_WRITING;
1918 ret = SSL_write_ex(s, buf, num, written);
1919 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1922 case SSL_EARLY_DATA_FINISHED_READING:
1923 case SSL_EARLY_DATA_READ_RETRY:
1924 early_data_state = s->early_data_state;
1925 /* We are a server writing to an unauthenticated client */
1926 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1927 ret = SSL_write_ex(s, buf, num, written);
1928 s->early_data_state = early_data_state;
1932 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1937 int SSL_shutdown(SSL *s)
1940 * Note that this function behaves differently from what one might
1941 * expect. Return values are 0 for no success (yet), 1 for success; but
1942 * calling it once is usually not enough, even if blocking I/O is used
1943 * (see ssl3_shutdown).
1946 if (s->handshake_func == NULL) {
1947 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1951 if (!SSL_in_init(s)) {
1952 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1953 struct ssl_async_args args;
1956 args.type = OTHERFUNC;
1957 args.f.func_other = s->method->ssl_shutdown;
1959 return ssl_start_async_job(s, &args, ssl_io_intern);
1961 return s->method->ssl_shutdown(s);
1964 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1969 int SSL_key_update(SSL *s, int updatetype)
1972 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1973 * negotiated, and that it is appropriate to call SSL_key_update() instead
1974 * of SSL_renegotiate().
1976 if (!SSL_IS_TLS13(s)) {
1977 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
1981 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
1982 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
1983 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
1987 if (!SSL_is_init_finished(s)) {
1988 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
1992 ossl_statem_set_in_init(s, 1);
1993 s->key_update = updatetype;
1997 int SSL_get_key_update_type(SSL *s)
1999 return s->key_update;
2002 int SSL_renegotiate(SSL *s)
2004 if (SSL_IS_TLS13(s)) {
2005 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2009 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2010 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2017 return (s->method->ssl_renegotiate(s));
2020 int SSL_renegotiate_abbreviated(SSL *s)
2022 if (SSL_IS_TLS13(s)) {
2023 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2027 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2028 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2035 return (s->method->ssl_renegotiate(s));
2038 int SSL_renegotiate_pending(SSL *s)
2041 * becomes true when negotiation is requested; false again once a
2042 * handshake has finished
2044 return (s->renegotiate != 0);
2047 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2052 case SSL_CTRL_GET_READ_AHEAD:
2053 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2054 case SSL_CTRL_SET_READ_AHEAD:
2055 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2056 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2059 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2060 s->msg_callback_arg = parg;
2064 return (s->mode |= larg);
2065 case SSL_CTRL_CLEAR_MODE:
2066 return (s->mode &= ~larg);
2067 case SSL_CTRL_GET_MAX_CERT_LIST:
2068 return (long)(s->max_cert_list);
2069 case SSL_CTRL_SET_MAX_CERT_LIST:
2072 l = (long)s->max_cert_list;
2073 s->max_cert_list = (size_t)larg;
2075 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2076 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2078 s->max_send_fragment = larg;
2079 if (s->max_send_fragment < s->split_send_fragment)
2080 s->split_send_fragment = s->max_send_fragment;
2082 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2083 if ((size_t)larg > s->max_send_fragment || larg == 0)
2085 s->split_send_fragment = larg;
2087 case SSL_CTRL_SET_MAX_PIPELINES:
2088 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2090 s->max_pipelines = larg;
2092 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2094 case SSL_CTRL_GET_RI_SUPPORT:
2096 return s->s3->send_connection_binding;
2099 case SSL_CTRL_CERT_FLAGS:
2100 return (s->cert->cert_flags |= larg);
2101 case SSL_CTRL_CLEAR_CERT_FLAGS:
2102 return (s->cert->cert_flags &= ~larg);
2104 case SSL_CTRL_GET_RAW_CIPHERLIST:
2106 if (s->s3->tmp.ciphers_raw == NULL)
2108 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2109 return (int)s->s3->tmp.ciphers_rawlen;
2111 return TLS_CIPHER_LEN;
2113 case SSL_CTRL_GET_EXTMS_SUPPORT:
2114 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2116 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2120 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2121 return ssl_check_allowed_versions(larg, s->max_proto_version)
2122 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2123 &s->min_proto_version);
2124 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2125 return ssl_check_allowed_versions(s->min_proto_version, larg)
2126 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2127 &s->max_proto_version);
2129 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2133 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2136 case SSL_CTRL_SET_MSG_CALLBACK:
2137 s->msg_callback = (void (*)
2138 (int write_p, int version, int content_type,
2139 const void *buf, size_t len, SSL *ssl,
2144 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2148 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2150 return ctx->sessions;
2153 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2156 /* For some cases with ctx == NULL perform syntax checks */
2159 #ifndef OPENSSL_NO_EC
2160 case SSL_CTRL_SET_GROUPS_LIST:
2161 return tls1_set_groups_list(NULL, NULL, parg);
2163 case SSL_CTRL_SET_SIGALGS_LIST:
2164 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2165 return tls1_set_sigalgs_list(NULL, parg, 0);
2172 case SSL_CTRL_GET_READ_AHEAD:
2173 return (ctx->read_ahead);
2174 case SSL_CTRL_SET_READ_AHEAD:
2175 l = ctx->read_ahead;
2176 ctx->read_ahead = larg;
2179 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2180 ctx->msg_callback_arg = parg;
2183 case SSL_CTRL_GET_MAX_CERT_LIST:
2184 return (long)(ctx->max_cert_list);
2185 case SSL_CTRL_SET_MAX_CERT_LIST:
2188 l = (long)ctx->max_cert_list;
2189 ctx->max_cert_list = (size_t)larg;
2192 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2195 l = (long)ctx->session_cache_size;
2196 ctx->session_cache_size = (size_t)larg;
2198 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2199 return (long)(ctx->session_cache_size);
2200 case SSL_CTRL_SET_SESS_CACHE_MODE:
2201 l = ctx->session_cache_mode;
2202 ctx->session_cache_mode = larg;
2204 case SSL_CTRL_GET_SESS_CACHE_MODE:
2205 return (ctx->session_cache_mode);
2207 case SSL_CTRL_SESS_NUMBER:
2208 return (lh_SSL_SESSION_num_items(ctx->sessions));
2209 case SSL_CTRL_SESS_CONNECT:
2210 return (ctx->stats.sess_connect);
2211 case SSL_CTRL_SESS_CONNECT_GOOD:
2212 return (ctx->stats.sess_connect_good);
2213 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2214 return (ctx->stats.sess_connect_renegotiate);
2215 case SSL_CTRL_SESS_ACCEPT:
2216 return (ctx->stats.sess_accept);
2217 case SSL_CTRL_SESS_ACCEPT_GOOD:
2218 return (ctx->stats.sess_accept_good);
2219 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2220 return (ctx->stats.sess_accept_renegotiate);
2221 case SSL_CTRL_SESS_HIT:
2222 return (ctx->stats.sess_hit);
2223 case SSL_CTRL_SESS_CB_HIT:
2224 return (ctx->stats.sess_cb_hit);
2225 case SSL_CTRL_SESS_MISSES:
2226 return (ctx->stats.sess_miss);
2227 case SSL_CTRL_SESS_TIMEOUTS:
2228 return (ctx->stats.sess_timeout);
2229 case SSL_CTRL_SESS_CACHE_FULL:
2230 return (ctx->stats.sess_cache_full);
2232 return (ctx->mode |= larg);
2233 case SSL_CTRL_CLEAR_MODE:
2234 return (ctx->mode &= ~larg);
2235 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2236 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2238 ctx->max_send_fragment = larg;
2239 if (ctx->max_send_fragment < ctx->split_send_fragment)
2240 ctx->split_send_fragment = ctx->max_send_fragment;
2242 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2243 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2245 ctx->split_send_fragment = larg;
2247 case SSL_CTRL_SET_MAX_PIPELINES:
2248 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2250 ctx->max_pipelines = larg;
2252 case SSL_CTRL_CERT_FLAGS:
2253 return (ctx->cert->cert_flags |= larg);
2254 case SSL_CTRL_CLEAR_CERT_FLAGS:
2255 return (ctx->cert->cert_flags &= ~larg);
2256 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2257 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2258 && ssl_set_version_bound(ctx->method->version, (int)larg,
2259 &ctx->min_proto_version);
2260 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2261 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2262 && ssl_set_version_bound(ctx->method->version, (int)larg,
2263 &ctx->max_proto_version);
2265 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2269 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2272 case SSL_CTRL_SET_MSG_CALLBACK:
2273 ctx->msg_callback = (void (*)
2274 (int write_p, int version, int content_type,
2275 const void *buf, size_t len, SSL *ssl,
2280 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2284 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2293 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2294 const SSL_CIPHER *const *bp)
2296 if ((*ap)->id > (*bp)->id)
2298 if ((*ap)->id < (*bp)->id)
2303 /** return a STACK of the ciphers available for the SSL and in order of
2305 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2308 if (s->cipher_list != NULL) {
2309 return (s->cipher_list);
2310 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2311 return (s->ctx->cipher_list);
2317 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2319 if ((s == NULL) || (s->session == NULL) || !s->server)
2321 return s->session->ciphers;
2324 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2326 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2328 ciphers = SSL_get_ciphers(s);
2331 ssl_set_client_disabled(s);
2332 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2333 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2334 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2336 sk = sk_SSL_CIPHER_new_null();
2339 if (!sk_SSL_CIPHER_push(sk, c)) {
2340 sk_SSL_CIPHER_free(sk);
2348 /** return a STACK of the ciphers available for the SSL and in order of
2350 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2353 if (s->cipher_list_by_id != NULL) {
2354 return (s->cipher_list_by_id);
2355 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2356 return (s->ctx->cipher_list_by_id);
2362 /** The old interface to get the same thing as SSL_get_ciphers() */
2363 const char *SSL_get_cipher_list(const SSL *s, int n)
2365 const SSL_CIPHER *c;
2366 STACK_OF(SSL_CIPHER) *sk;
2370 sk = SSL_get_ciphers(s);
2371 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2373 c = sk_SSL_CIPHER_value(sk, n);
2379 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2381 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2384 return ctx->cipher_list;
2388 /** specify the ciphers to be used by default by the SSL_CTX */
2389 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2391 STACK_OF(SSL_CIPHER) *sk;
2393 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2394 &ctx->cipher_list_by_id, str, ctx->cert);
2396 * ssl_create_cipher_list may return an empty stack if it was unable to
2397 * find a cipher matching the given rule string (for example if the rule
2398 * string specifies a cipher which has been disabled). This is not an
2399 * error as far as ssl_create_cipher_list is concerned, and hence
2400 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2404 else if (sk_SSL_CIPHER_num(sk) == 0) {
2405 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2411 /** specify the ciphers to be used by the SSL */
2412 int SSL_set_cipher_list(SSL *s, const char *str)
2414 STACK_OF(SSL_CIPHER) *sk;
2416 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2417 &s->cipher_list_by_id, str, s->cert);
2418 /* see comment in SSL_CTX_set_cipher_list */
2421 else if (sk_SSL_CIPHER_num(sk) == 0) {
2422 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2428 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2431 STACK_OF(SSL_CIPHER) *sk;
2432 const SSL_CIPHER *c;
2435 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2439 sk = s->session->ciphers;
2441 if (sk_SSL_CIPHER_num(sk) == 0)
2444 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2447 c = sk_SSL_CIPHER_value(sk, i);
2448 n = strlen(c->name);
2455 memcpy(p, c->name, n + 1);
2464 /** return a servername extension value if provided in Client Hello, or NULL.
2465 * So far, only host_name types are defined (RFC 3546).
2468 const char *SSL_get_servername(const SSL *s, const int type)
2470 if (type != TLSEXT_NAMETYPE_host_name)
2473 return s->session && !s->ext.hostname ?
2474 s->session->ext.hostname : s->ext.hostname;
2477 int SSL_get_servername_type(const SSL *s)
2480 && (!s->ext.hostname ? s->session->
2481 ext.hostname : s->ext.hostname))
2482 return TLSEXT_NAMETYPE_host_name;
2487 * SSL_select_next_proto implements the standard protocol selection. It is
2488 * expected that this function is called from the callback set by
2489 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2490 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2491 * not included in the length. A byte string of length 0 is invalid. No byte
2492 * string may be truncated. The current, but experimental algorithm for
2493 * selecting the protocol is: 1) If the server doesn't support NPN then this
2494 * is indicated to the callback. In this case, the client application has to
2495 * abort the connection or have a default application level protocol. 2) If
2496 * the server supports NPN, but advertises an empty list then the client
2497 * selects the first protocol in its list, but indicates via the API that this
2498 * fallback case was enacted. 3) Otherwise, the client finds the first
2499 * protocol in the server's list that it supports and selects this protocol.
2500 * This is because it's assumed that the server has better information about
2501 * which protocol a client should use. 4) If the client doesn't support any
2502 * of the server's advertised protocols, then this is treated the same as
2503 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2504 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2506 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2507 const unsigned char *server,
2508 unsigned int server_len,
2509 const unsigned char *client, unsigned int client_len)
2512 const unsigned char *result;
2513 int status = OPENSSL_NPN_UNSUPPORTED;
2516 * For each protocol in server preference order, see if we support it.
2518 for (i = 0; i < server_len;) {
2519 for (j = 0; j < client_len;) {
2520 if (server[i] == client[j] &&
2521 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2522 /* We found a match */
2523 result = &server[i];
2524 status = OPENSSL_NPN_NEGOTIATED;
2534 /* There's no overlap between our protocols and the server's list. */
2536 status = OPENSSL_NPN_NO_OVERLAP;
2539 *out = (unsigned char *)result + 1;
2540 *outlen = result[0];
2544 #ifndef OPENSSL_NO_NEXTPROTONEG
2546 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2547 * client's requested protocol for this connection and returns 0. If the
2548 * client didn't request any protocol, then *data is set to NULL. Note that
2549 * the client can request any protocol it chooses. The value returned from
2550 * this function need not be a member of the list of supported protocols
2551 * provided by the callback.
2553 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2560 *len = (unsigned int)s->ext.npn_len;
2565 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2566 * a TLS server needs a list of supported protocols for Next Protocol
2567 * Negotiation. The returned list must be in wire format. The list is
2568 * returned by setting |out| to point to it and |outlen| to its length. This
2569 * memory will not be modified, but one should assume that the SSL* keeps a
2570 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2571 * wishes to advertise. Otherwise, no such extension will be included in the
2574 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2575 SSL_CTX_npn_advertised_cb_func cb,
2578 ctx->ext.npn_advertised_cb = cb;
2579 ctx->ext.npn_advertised_cb_arg = arg;
2583 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2584 * client needs to select a protocol from the server's provided list. |out|
2585 * must be set to point to the selected protocol (which may be within |in|).
2586 * The length of the protocol name must be written into |outlen|. The
2587 * server's advertised protocols are provided in |in| and |inlen|. The
2588 * callback can assume that |in| is syntactically valid. The client must
2589 * select a protocol. It is fatal to the connection if this callback returns
2590 * a value other than SSL_TLSEXT_ERR_OK.
2592 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2593 SSL_CTX_npn_select_cb_func cb,
2596 ctx->ext.npn_select_cb = cb;
2597 ctx->ext.npn_select_cb_arg = arg;
2602 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2603 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2604 * length-prefixed strings). Returns 0 on success.
2606 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2607 unsigned int protos_len)
2609 OPENSSL_free(ctx->ext.alpn);
2610 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2611 if (ctx->ext.alpn == NULL) {
2612 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2615 ctx->ext.alpn_len = protos_len;
2621 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2622 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2623 * length-prefixed strings). Returns 0 on success.
2625 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2626 unsigned int protos_len)
2628 OPENSSL_free(ssl->ext.alpn);
2629 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2630 if (ssl->ext.alpn == NULL) {
2631 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2634 ssl->ext.alpn_len = protos_len;
2640 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2641 * called during ClientHello processing in order to select an ALPN protocol
2642 * from the client's list of offered protocols.
2644 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2645 SSL_CTX_alpn_select_cb_func cb,
2648 ctx->ext.alpn_select_cb = cb;
2649 ctx->ext.alpn_select_cb_arg = arg;
2653 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2654 * On return it sets |*data| to point to |*len| bytes of protocol name
2655 * (not including the leading length-prefix byte). If the server didn't
2656 * respond with a negotiated protocol then |*len| will be zero.
2658 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2663 *data = ssl->s3->alpn_selected;
2667 *len = (unsigned int)ssl->s3->alpn_selected_len;
2670 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2671 const char *label, size_t llen,
2672 const unsigned char *context, size_t contextlen,
2675 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2678 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2680 contextlen, use_context);
2683 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2685 const unsigned char *session_id = a->session_id;
2687 unsigned char tmp_storage[4];
2689 if (a->session_id_length < sizeof(tmp_storage)) {
2690 memset(tmp_storage, 0, sizeof(tmp_storage));
2691 memcpy(tmp_storage, a->session_id, a->session_id_length);
2692 session_id = tmp_storage;
2696 ((unsigned long)session_id[0]) |
2697 ((unsigned long)session_id[1] << 8L) |
2698 ((unsigned long)session_id[2] << 16L) |
2699 ((unsigned long)session_id[3] << 24L);
2704 * NB: If this function (or indeed the hash function which uses a sort of
2705 * coarser function than this one) is changed, ensure
2706 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2707 * being able to construct an SSL_SESSION that will collide with any existing
2708 * session with a matching session ID.
2710 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2712 if (a->ssl_version != b->ssl_version)
2714 if (a->session_id_length != b->session_id_length)
2716 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2720 * These wrapper functions should remain rather than redeclaring
2721 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2722 * variable. The reason is that the functions aren't static, they're exposed
2726 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2728 SSL_CTX *ret = NULL;
2731 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2735 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2738 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2739 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2742 ret = OPENSSL_zalloc(sizeof(*ret));
2747 ret->min_proto_version = 0;
2748 ret->max_proto_version = 0;
2749 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2750 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2751 /* We take the system default. */
2752 ret->session_timeout = meth->get_timeout();
2753 ret->references = 1;
2754 ret->lock = CRYPTO_THREAD_lock_new();
2755 if (ret->lock == NULL) {
2756 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2760 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2761 ret->verify_mode = SSL_VERIFY_NONE;
2762 if ((ret->cert = ssl_cert_new()) == NULL)
2765 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2766 if (ret->sessions == NULL)
2768 ret->cert_store = X509_STORE_new();
2769 if (ret->cert_store == NULL)
2771 #ifndef OPENSSL_NO_CT
2772 ret->ctlog_store = CTLOG_STORE_new();
2773 if (ret->ctlog_store == NULL)
2776 if (!ssl_create_cipher_list(ret->method,
2777 &ret->cipher_list, &ret->cipher_list_by_id,
2778 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2779 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2780 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2784 ret->param = X509_VERIFY_PARAM_new();
2785 if (ret->param == NULL)
2788 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2789 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2792 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2793 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2797 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2800 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2803 /* No compression for DTLS */
2804 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2805 ret->comp_methods = SSL_COMP_get_compression_methods();
2807 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2808 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2810 /* Setup RFC5077 ticket keys */
2811 if ((RAND_bytes(ret->ext.tick_key_name,
2812 sizeof(ret->ext.tick_key_name)) <= 0)
2813 || (RAND_bytes(ret->ext.tick_hmac_key,
2814 sizeof(ret->ext.tick_hmac_key)) <= 0)
2815 || (RAND_bytes(ret->ext.tick_aes_key,
2816 sizeof(ret->ext.tick_aes_key)) <= 0))
2817 ret->options |= SSL_OP_NO_TICKET;
2819 #ifndef OPENSSL_NO_SRP
2820 if (!SSL_CTX_SRP_CTX_init(ret))
2823 #ifndef OPENSSL_NO_ENGINE
2824 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2825 # define eng_strx(x) #x
2826 # define eng_str(x) eng_strx(x)
2827 /* Use specific client engine automatically... ignore errors */
2830 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2833 ENGINE_load_builtin_engines();
2834 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2836 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2842 * Default is to connect to non-RI servers. When RI is more widely
2843 * deployed might change this.
2845 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2847 * Disable compression by default to prevent CRIME. Applications can
2848 * re-enable compression by configuring
2849 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2850 * or by using the SSL_CONF library.
2852 ret->options |= SSL_OP_NO_COMPRESSION;
2854 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2857 * Default max early data is a fully loaded single record. Could be split
2858 * across multiple records in practice
2860 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2864 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2870 int SSL_CTX_up_ref(SSL_CTX *ctx)
2874 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2877 REF_PRINT_COUNT("SSL_CTX", ctx);
2878 REF_ASSERT_ISNT(i < 2);
2879 return ((i > 1) ? 1 : 0);
2882 void SSL_CTX_free(SSL_CTX *a)
2889 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2890 REF_PRINT_COUNT("SSL_CTX", a);
2893 REF_ASSERT_ISNT(i < 0);
2895 X509_VERIFY_PARAM_free(a->param);
2896 dane_ctx_final(&a->dane);
2899 * Free internal session cache. However: the remove_cb() may reference
2900 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2901 * after the sessions were flushed.
2902 * As the ex_data handling routines might also touch the session cache,
2903 * the most secure solution seems to be: empty (flush) the cache, then
2904 * free ex_data, then finally free the cache.
2905 * (See ticket [openssl.org #212].)
2907 if (a->sessions != NULL)
2908 SSL_CTX_flush_sessions(a, 0);
2910 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2911 lh_SSL_SESSION_free(a->sessions);
2912 X509_STORE_free(a->cert_store);
2913 #ifndef OPENSSL_NO_CT
2914 CTLOG_STORE_free(a->ctlog_store);
2916 sk_SSL_CIPHER_free(a->cipher_list);
2917 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2918 ssl_cert_free(a->cert);
2919 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2920 sk_X509_pop_free(a->extra_certs, X509_free);
2921 a->comp_methods = NULL;
2922 #ifndef OPENSSL_NO_SRTP
2923 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2925 #ifndef OPENSSL_NO_SRP
2926 SSL_CTX_SRP_CTX_free(a);
2928 #ifndef OPENSSL_NO_ENGINE
2929 ENGINE_finish(a->client_cert_engine);
2932 #ifndef OPENSSL_NO_EC
2933 OPENSSL_free(a->ext.ecpointformats);
2934 OPENSSL_free(a->ext.supportedgroups);
2936 OPENSSL_free(a->ext.alpn);
2938 CRYPTO_THREAD_lock_free(a->lock);
2943 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2945 ctx->default_passwd_callback = cb;
2948 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2950 ctx->default_passwd_callback_userdata = u;
2953 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2955 return ctx->default_passwd_callback;
2958 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2960 return ctx->default_passwd_callback_userdata;
2963 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2965 s->default_passwd_callback = cb;
2968 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2970 s->default_passwd_callback_userdata = u;
2973 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2975 return s->default_passwd_callback;
2978 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2980 return s->default_passwd_callback_userdata;
2983 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2984 int (*cb) (X509_STORE_CTX *, void *),
2987 ctx->app_verify_callback = cb;
2988 ctx->app_verify_arg = arg;
2991 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2992 int (*cb) (int, X509_STORE_CTX *))
2994 ctx->verify_mode = mode;
2995 ctx->default_verify_callback = cb;
2998 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3000 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3003 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3005 ssl_cert_set_cert_cb(c->cert, cb, arg);
3008 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3010 ssl_cert_set_cert_cb(s->cert, cb, arg);
3013 void ssl_set_masks(SSL *s)
3016 uint32_t *pvalid = s->s3->tmp.valid_flags;
3017 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3018 unsigned long mask_k, mask_a;
3019 #ifndef OPENSSL_NO_EC
3020 int have_ecc_cert, ecdsa_ok;
3025 #ifndef OPENSSL_NO_DH
3026 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3031 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3032 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3033 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3034 #ifndef OPENSSL_NO_EC
3035 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3041 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3042 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3045 #ifndef OPENSSL_NO_GOST
3046 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3047 mask_k |= SSL_kGOST;
3048 mask_a |= SSL_aGOST12;
3050 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3051 mask_k |= SSL_kGOST;
3052 mask_a |= SSL_aGOST12;
3054 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3055 mask_k |= SSL_kGOST;
3056 mask_a |= SSL_aGOST01;
3066 if (rsa_enc || rsa_sign) {
3074 mask_a |= SSL_aNULL;
3077 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3078 * depending on the key usage extension.
3080 #ifndef OPENSSL_NO_EC
3081 if (have_ecc_cert) {
3083 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3084 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3085 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3088 mask_a |= SSL_aECDSA;
3090 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3091 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3092 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3093 && TLS1_get_version(s) == TLS1_2_VERSION)
3094 mask_a |= SSL_aECDSA;
3097 #ifndef OPENSSL_NO_EC
3098 mask_k |= SSL_kECDHE;
3101 #ifndef OPENSSL_NO_PSK
3104 if (mask_k & SSL_kRSA)
3105 mask_k |= SSL_kRSAPSK;
3106 if (mask_k & SSL_kDHE)
3107 mask_k |= SSL_kDHEPSK;
3108 if (mask_k & SSL_kECDHE)
3109 mask_k |= SSL_kECDHEPSK;
3112 s->s3->tmp.mask_k = mask_k;
3113 s->s3->tmp.mask_a = mask_a;
3116 #ifndef OPENSSL_NO_EC
3118 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3120 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3121 /* key usage, if present, must allow signing */
3122 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3123 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3124 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3128 return 1; /* all checks are ok */
3133 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3134 size_t *serverinfo_length)
3136 CERT_PKEY *cpk = s->s3->tmp.cert;
3137 *serverinfo_length = 0;
3139 if (cpk == NULL || cpk->serverinfo == NULL)
3142 *serverinfo = cpk->serverinfo;
3143 *serverinfo_length = cpk->serverinfo_length;
3147 void ssl_update_cache(SSL *s, int mode)
3152 * If the session_id_length is 0, we are not supposed to cache it, and it
3153 * would be rather hard to do anyway :-)
3155 if (s->session->session_id_length == 0)
3158 i = s->session_ctx->session_cache_mode;
3159 if ((i & mode) && (!s->hit)
3160 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
3161 || SSL_CTX_add_session(s->session_ctx, s->session))
3162 && (s->session_ctx->new_session_cb != NULL)) {
3163 SSL_SESSION_up_ref(s->session);
3164 if (!s->session_ctx->new_session_cb(s, s->session))
3165 SSL_SESSION_free(s->session);
3168 /* auto flush every 255 connections */
3169 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3170 if ((((mode & SSL_SESS_CACHE_CLIENT)
3171 ? s->session_ctx->stats.sess_connect_good
3172 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3173 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3178 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3183 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3188 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3192 if (s->method != meth) {
3193 const SSL_METHOD *sm = s->method;
3194 int (*hf) (SSL *) = s->handshake_func;
3196 if (sm->version == meth->version)
3201 ret = s->method->ssl_new(s);
3204 if (hf == sm->ssl_connect)
3205 s->handshake_func = meth->ssl_connect;
3206 else if (hf == sm->ssl_accept)
3207 s->handshake_func = meth->ssl_accept;
3212 int SSL_get_error(const SSL *s, int i)
3219 return (SSL_ERROR_NONE);
3222 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3223 * where we do encode the error
3225 if ((l = ERR_peek_error()) != 0) {
3226 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3227 return (SSL_ERROR_SYSCALL);
3229 return (SSL_ERROR_SSL);
3232 if (SSL_want_read(s)) {
3233 bio = SSL_get_rbio(s);
3234 if (BIO_should_read(bio))
3235 return (SSL_ERROR_WANT_READ);
3236 else if (BIO_should_write(bio))
3238 * This one doesn't make too much sense ... We never try to write
3239 * to the rbio, and an application program where rbio and wbio
3240 * are separate couldn't even know what it should wait for.
3241 * However if we ever set s->rwstate incorrectly (so that we have
3242 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3243 * wbio *are* the same, this test works around that bug; so it
3244 * might be safer to keep it.
3246 return (SSL_ERROR_WANT_WRITE);
3247 else if (BIO_should_io_special(bio)) {
3248 reason = BIO_get_retry_reason(bio);
3249 if (reason == BIO_RR_CONNECT)
3250 return (SSL_ERROR_WANT_CONNECT);
3251 else if (reason == BIO_RR_ACCEPT)
3252 return (SSL_ERROR_WANT_ACCEPT);
3254 return (SSL_ERROR_SYSCALL); /* unknown */
3258 if (SSL_want_write(s)) {
3259 /* Access wbio directly - in order to use the buffered bio if present */
3261 if (BIO_should_write(bio))
3262 return (SSL_ERROR_WANT_WRITE);
3263 else if (BIO_should_read(bio))
3265 * See above (SSL_want_read(s) with BIO_should_write(bio))
3267 return (SSL_ERROR_WANT_READ);
3268 else if (BIO_should_io_special(bio)) {
3269 reason = BIO_get_retry_reason(bio);
3270 if (reason == BIO_RR_CONNECT)
3271 return (SSL_ERROR_WANT_CONNECT);
3272 else if (reason == BIO_RR_ACCEPT)
3273 return (SSL_ERROR_WANT_ACCEPT);
3275 return (SSL_ERROR_SYSCALL);
3278 if (SSL_want_x509_lookup(s))
3279 return (SSL_ERROR_WANT_X509_LOOKUP);
3280 if (SSL_want_async(s))
3281 return SSL_ERROR_WANT_ASYNC;
3282 if (SSL_want_async_job(s))
3283 return SSL_ERROR_WANT_ASYNC_JOB;
3284 if (SSL_want_early(s))
3285 return SSL_ERROR_WANT_EARLY;
3287 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3288 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3289 return (SSL_ERROR_ZERO_RETURN);
3291 return (SSL_ERROR_SYSCALL);
3294 static int ssl_do_handshake_intern(void *vargs)
3296 struct ssl_async_args *args;
3299 args = (struct ssl_async_args *)vargs;
3302 return s->handshake_func(s);
3305 int SSL_do_handshake(SSL *s)
3309 if (s->handshake_func == NULL) {
3310 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3314 ossl_statem_check_finish_init(s, -1);
3316 s->method->ssl_renegotiate_check(s, 0);
3318 if (SSL_is_server(s)) {
3319 /* clear SNI settings at server-side */
3320 OPENSSL_free(s->ext.hostname);
3321 s->ext.hostname = NULL;
3324 if (SSL_in_init(s) || SSL_in_before(s)) {
3325 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3326 struct ssl_async_args args;
3330 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3332 ret = s->handshake_func(s);
3338 void SSL_set_accept_state(SSL *s)
3342 ossl_statem_clear(s);
3343 s->handshake_func = s->method->ssl_accept;
3347 void SSL_set_connect_state(SSL *s)
3351 ossl_statem_clear(s);
3352 s->handshake_func = s->method->ssl_connect;
3356 int ssl_undefined_function(SSL *s)
3358 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3362 int ssl_undefined_void_function(void)
3364 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3365 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3369 int ssl_undefined_const_function(const SSL *s)
3374 const SSL_METHOD *ssl_bad_method(int ver)
3376 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3380 const char *ssl_protocol_to_string(int version)
3384 case TLS1_3_VERSION:
3387 case TLS1_2_VERSION:
3390 case TLS1_1_VERSION:
3405 case DTLS1_2_VERSION:
3413 const char *SSL_get_version(const SSL *s)
3415 return ssl_protocol_to_string(s->version);
3418 SSL *SSL_dup(SSL *s)
3420 STACK_OF(X509_NAME) *sk;
3425 /* If we're not quiescent, just up_ref! */
3426 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3427 CRYPTO_UP_REF(&s->references, &i, s->lock);
3432 * Otherwise, copy configuration state, and session if set.
3434 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3437 if (s->session != NULL) {
3439 * Arranges to share the same session via up_ref. This "copies"
3440 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3442 if (!SSL_copy_session_id(ret, s))
3446 * No session has been established yet, so we have to expect that
3447 * s->cert or ret->cert will be changed later -- they should not both
3448 * point to the same object, and thus we can't use
3449 * SSL_copy_session_id.
3451 if (!SSL_set_ssl_method(ret, s->method))
3454 if (s->cert != NULL) {
3455 ssl_cert_free(ret->cert);
3456 ret->cert = ssl_cert_dup(s->cert);
3457 if (ret->cert == NULL)
3461 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3462 (int)s->sid_ctx_length))
3466 if (!ssl_dane_dup(ret, s))
3468 ret->version = s->version;
3469 ret->options = s->options;
3470 ret->mode = s->mode;
3471 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3472 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3473 ret->msg_callback = s->msg_callback;
3474 ret->msg_callback_arg = s->msg_callback_arg;
3475 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3476 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3477 ret->generate_session_id = s->generate_session_id;
3479 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3481 /* copy app data, a little dangerous perhaps */
3482 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3485 /* setup rbio, and wbio */
3486 if (s->rbio != NULL) {
3487 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3490 if (s->wbio != NULL) {
3491 if (s->wbio != s->rbio) {
3492 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3495 BIO_up_ref(ret->rbio);
3496 ret->wbio = ret->rbio;
3500 ret->server = s->server;
3501 if (s->handshake_func) {
3503 SSL_set_accept_state(ret);
3505 SSL_set_connect_state(ret);
3507 ret->shutdown = s->shutdown;
3510 ret->default_passwd_callback = s->default_passwd_callback;
3511 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3513 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3515 /* dup the cipher_list and cipher_list_by_id stacks */
3516 if (s->cipher_list != NULL) {
3517 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3520 if (s->cipher_list_by_id != NULL)
3521 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3525 /* Dup the client_CA list */
3526 if (s->ca_names != NULL) {
3527 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3530 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3531 xn = sk_X509_NAME_value(sk, i);
3532 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3545 void ssl_clear_cipher_ctx(SSL *s)
3547 if (s->enc_read_ctx != NULL) {
3548 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3549 s->enc_read_ctx = NULL;
3551 if (s->enc_write_ctx != NULL) {
3552 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3553 s->enc_write_ctx = NULL;
3555 #ifndef OPENSSL_NO_COMP
3556 COMP_CTX_free(s->expand);
3558 COMP_CTX_free(s->compress);
3563 X509 *SSL_get_certificate(const SSL *s)
3565 if (s->cert != NULL)
3566 return (s->cert->key->x509);
3571 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3573 if (s->cert != NULL)
3574 return (s->cert->key->privatekey);
3579 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3581 if (ctx->cert != NULL)
3582 return ctx->cert->key->x509;
3587 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3589 if (ctx->cert != NULL)
3590 return ctx->cert->key->privatekey;
3595 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3597 if ((s->session != NULL) && (s->session->cipher != NULL))
3598 return (s->session->cipher);
3602 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3604 #ifndef OPENSSL_NO_COMP
3605 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3611 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3613 #ifndef OPENSSL_NO_COMP
3614 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3620 int ssl_init_wbio_buffer(SSL *s)
3624 if (s->bbio != NULL) {
3625 /* Already buffered. */
3629 bbio = BIO_new(BIO_f_buffer());
3630 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3632 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3636 s->wbio = BIO_push(bbio, s->wbio);
3641 int ssl_free_wbio_buffer(SSL *s)
3643 /* callers ensure s is never null */
3644 if (s->bbio == NULL)
3647 s->wbio = BIO_pop(s->wbio);
3648 if (!ossl_assert(s->wbio != NULL))
3656 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3658 ctx->quiet_shutdown = mode;
3661 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3663 return (ctx->quiet_shutdown);
3666 void SSL_set_quiet_shutdown(SSL *s, int mode)
3668 s->quiet_shutdown = mode;
3671 int SSL_get_quiet_shutdown(const SSL *s)
3673 return (s->quiet_shutdown);
3676 void SSL_set_shutdown(SSL *s, int mode)
3681 int SSL_get_shutdown(const SSL *s)
3686 int SSL_version(const SSL *s)
3691 int SSL_client_version(const SSL *s)
3693 return s->client_version;
3696 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3701 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3704 if (ssl->ctx == ctx)
3707 ctx = ssl->session_ctx;
3708 new_cert = ssl_cert_dup(ctx->cert);
3709 if (new_cert == NULL) {
3713 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3714 ssl_cert_free(new_cert);
3718 ssl_cert_free(ssl->cert);
3719 ssl->cert = new_cert;
3722 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3723 * so setter APIs must prevent invalid lengths from entering the system.
3725 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3729 * If the session ID context matches that of the parent SSL_CTX,
3730 * inherit it from the new SSL_CTX as well. If however the context does
3731 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3732 * leave it unchanged.
3734 if ((ssl->ctx != NULL) &&
3735 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3736 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3737 ssl->sid_ctx_length = ctx->sid_ctx_length;
3738 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3741 SSL_CTX_up_ref(ctx);
3742 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3748 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3750 return (X509_STORE_set_default_paths(ctx->cert_store));
3753 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3755 X509_LOOKUP *lookup;
3757 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3760 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3762 /* Clear any errors if the default directory does not exist */
3768 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3770 X509_LOOKUP *lookup;
3772 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3776 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3778 /* Clear any errors if the default file does not exist */
3784 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3787 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3790 void SSL_set_info_callback(SSL *ssl,
3791 void (*cb) (const SSL *ssl, int type, int val))
3793 ssl->info_callback = cb;
3797 * One compiler (Diab DCC) doesn't like argument names in returned function
3800 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3803 return ssl->info_callback;
3806 void SSL_set_verify_result(SSL *ssl, long arg)
3808 ssl->verify_result = arg;
3811 long SSL_get_verify_result(const SSL *ssl)
3813 return (ssl->verify_result);
3816 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3819 return sizeof(ssl->s3->client_random);
3820 if (outlen > sizeof(ssl->s3->client_random))
3821 outlen = sizeof(ssl->s3->client_random);
3822 memcpy(out, ssl->s3->client_random, outlen);
3826 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3829 return sizeof(ssl->s3->server_random);
3830 if (outlen > sizeof(ssl->s3->server_random))
3831 outlen = sizeof(ssl->s3->server_random);
3832 memcpy(out, ssl->s3->server_random, outlen);
3836 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3837 unsigned char *out, size_t outlen)
3840 return session->master_key_length;
3841 if (outlen > session->master_key_length)
3842 outlen = session->master_key_length;
3843 memcpy(out, session->master_key, outlen);
3847 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3850 if (len > sizeof(sess->master_key))
3853 memcpy(sess->master_key, in, len);
3854 sess->master_key_length = len;
3859 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3861 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3864 void *SSL_get_ex_data(const SSL *s, int idx)
3866 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3869 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3871 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3874 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3876 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3879 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3881 return (ctx->cert_store);
3884 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3886 X509_STORE_free(ctx->cert_store);
3887 ctx->cert_store = store;
3890 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3893 X509_STORE_up_ref(store);
3894 SSL_CTX_set_cert_store(ctx, store);
3897 int SSL_want(const SSL *s)
3899 return (s->rwstate);
3903 * \brief Set the callback for generating temporary DH keys.
3904 * \param ctx the SSL context.
3905 * \param dh the callback
3908 #ifndef OPENSSL_NO_DH
3909 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3910 DH *(*dh) (SSL *ssl, int is_export,
3913 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3916 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3919 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3923 #ifndef OPENSSL_NO_PSK
3924 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3926 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3927 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3930 OPENSSL_free(ctx->cert->psk_identity_hint);
3931 if (identity_hint != NULL) {
3932 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3933 if (ctx->cert->psk_identity_hint == NULL)
3936 ctx->cert->psk_identity_hint = NULL;
3940 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3945 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3946 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3949 OPENSSL_free(s->cert->psk_identity_hint);
3950 if (identity_hint != NULL) {
3951 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3952 if (s->cert->psk_identity_hint == NULL)
3955 s->cert->psk_identity_hint = NULL;
3959 const char *SSL_get_psk_identity_hint(const SSL *s)
3961 if (s == NULL || s->session == NULL)
3963 return (s->session->psk_identity_hint);
3966 const char *SSL_get_psk_identity(const SSL *s)
3968 if (s == NULL || s->session == NULL)
3970 return (s->session->psk_identity);
3973 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
3975 s->psk_client_callback = cb;
3978 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
3980 ctx->psk_client_callback = cb;
3983 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
3985 s->psk_server_callback = cb;
3988 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
3990 ctx->psk_server_callback = cb;
3994 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
3996 s->psk_find_session_cb = cb;
3999 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4000 SSL_psk_find_session_cb_func cb)
4002 ctx->psk_find_session_cb = cb;
4005 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4007 s->psk_use_session_cb = cb;
4010 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4011 SSL_psk_use_session_cb_func cb)
4013 ctx->psk_use_session_cb = cb;
4016 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4017 void (*cb) (int write_p, int version,
4018 int content_type, const void *buf,
4019 size_t len, SSL *ssl, void *arg))
4021 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4024 void SSL_set_msg_callback(SSL *ssl,
4025 void (*cb) (int write_p, int version,
4026 int content_type, const void *buf,
4027 size_t len, SSL *ssl, void *arg))
4029 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4032 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4033 int (*cb) (SSL *ssl,
4037 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4038 (void (*)(void))cb);
4041 void SSL_set_not_resumable_session_callback(SSL *ssl,
4042 int (*cb) (SSL *ssl,
4043 int is_forward_secure))
4045 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4046 (void (*)(void))cb);
4049 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4050 size_t (*cb) (SSL *ssl, int type,
4051 size_t len, void *arg))
4053 ctx->record_padding_cb = cb;
4056 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4058 ctx->record_padding_arg = arg;
4061 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4063 return ctx->record_padding_arg;
4066 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4068 /* block size of 0 or 1 is basically no padding */
4069 if (block_size == 1)
4070 ctx->block_padding = 0;
4071 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4072 ctx->block_padding = block_size;
4078 void SSL_set_record_padding_callback(SSL *ssl,
4079 size_t (*cb) (SSL *ssl, int type,
4080 size_t len, void *arg))
4082 ssl->record_padding_cb = cb;
4085 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4087 ssl->record_padding_arg = arg;
4090 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4092 return ssl->record_padding_arg;
4095 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4097 /* block size of 0 or 1 is basically no padding */
4098 if (block_size == 1)
4099 ssl->block_padding = 0;
4100 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4101 ssl->block_padding = block_size;
4108 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4109 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4110 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4111 * Returns the newly allocated ctx;
4114 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4116 ssl_clear_hash_ctx(hash);
4117 *hash = EVP_MD_CTX_new();
4118 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4119 EVP_MD_CTX_free(*hash);
4126 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4129 EVP_MD_CTX_free(*hash);
4133 /* Retrieve handshake hashes */
4134 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4137 EVP_MD_CTX *ctx = NULL;
4138 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4139 int hashleni = EVP_MD_CTX_size(hdgst);
4142 if (hashleni < 0 || (size_t)hashleni > outlen)
4145 ctx = EVP_MD_CTX_new();
4149 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4150 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4153 *hashlen = hashleni;
4157 EVP_MD_CTX_free(ctx);
4161 int SSL_session_reused(SSL *s)
4166 int SSL_is_server(const SSL *s)
4171 #if OPENSSL_API_COMPAT < 0x10100000L
4172 void SSL_set_debug(SSL *s, int debug)
4174 /* Old function was do-nothing anyway... */
4180 void SSL_set_security_level(SSL *s, int level)
4182 s->cert->sec_level = level;
4185 int SSL_get_security_level(const SSL *s)
4187 return s->cert->sec_level;
4190 void SSL_set_security_callback(SSL *s,
4191 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4192 int op, int bits, int nid,
4193 void *other, void *ex))
4195 s->cert->sec_cb = cb;
4198 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4199 const SSL_CTX *ctx, int op,
4200 int bits, int nid, void *other,
4202 return s->cert->sec_cb;
4205 void SSL_set0_security_ex_data(SSL *s, void *ex)
4207 s->cert->sec_ex = ex;
4210 void *SSL_get0_security_ex_data(const SSL *s)
4212 return s->cert->sec_ex;
4215 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4217 ctx->cert->sec_level = level;
4220 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4222 return ctx->cert->sec_level;
4225 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4226 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4227 int op, int bits, int nid,
4228 void *other, void *ex))
4230 ctx->cert->sec_cb = cb;
4233 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4239 return ctx->cert->sec_cb;
4242 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4244 ctx->cert->sec_ex = ex;
4247 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4249 return ctx->cert->sec_ex;
4253 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4254 * can return unsigned long, instead of the generic long return value from the
4255 * control interface.
4257 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4259 return ctx->options;
4262 unsigned long SSL_get_options(const SSL *s)
4267 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4269 return ctx->options |= op;
4272 unsigned long SSL_set_options(SSL *s, unsigned long op)
4274 return s->options |= op;
4277 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4279 return ctx->options &= ~op;
4282 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4284 return s->options &= ~op;
4287 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4289 return s->verified_chain;
4292 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4294 #ifndef OPENSSL_NO_CT
4297 * Moves SCTs from the |src| stack to the |dst| stack.
4298 * The source of each SCT will be set to |origin|.
4299 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4301 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4303 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4304 sct_source_t origin)
4310 *dst = sk_SCT_new_null();
4312 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4317 while ((sct = sk_SCT_pop(src)) != NULL) {
4318 if (SCT_set_source(sct, origin) != 1)
4321 if (sk_SCT_push(*dst, sct) <= 0)
4329 sk_SCT_push(src, sct); /* Put the SCT back */
4334 * Look for data collected during ServerHello and parse if found.
4335 * Returns the number of SCTs extracted.
4337 static int ct_extract_tls_extension_scts(SSL *s)
4339 int scts_extracted = 0;
4341 if (s->ext.scts != NULL) {
4342 const unsigned char *p = s->ext.scts;
4343 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4345 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4347 SCT_LIST_free(scts);
4350 return scts_extracted;
4354 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4355 * contains an SCT X509 extension. They will be stored in |s->scts|.
4357 * - The number of SCTs extracted, assuming an OCSP response exists.
4358 * - 0 if no OCSP response exists or it contains no SCTs.
4359 * - A negative integer if an error occurs.
4361 static int ct_extract_ocsp_response_scts(SSL *s)
4363 # ifndef OPENSSL_NO_OCSP
4364 int scts_extracted = 0;
4365 const unsigned char *p;
4366 OCSP_BASICRESP *br = NULL;
4367 OCSP_RESPONSE *rsp = NULL;
4368 STACK_OF(SCT) *scts = NULL;
4371 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4374 p = s->ext.ocsp.resp;
4375 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4379 br = OCSP_response_get1_basic(rsp);
4383 for (i = 0; i < OCSP_resp_count(br); ++i) {
4384 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4390 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4392 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4393 if (scts_extracted < 0)
4397 SCT_LIST_free(scts);
4398 OCSP_BASICRESP_free(br);
4399 OCSP_RESPONSE_free(rsp);
4400 return scts_extracted;
4402 /* Behave as if no OCSP response exists */
4408 * Attempts to extract SCTs from the peer certificate.
4409 * Return the number of SCTs extracted, or a negative integer if an error
4412 static int ct_extract_x509v3_extension_scts(SSL *s)
4414 int scts_extracted = 0;
4415 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4418 STACK_OF(SCT) *scts =
4419 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4422 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4424 SCT_LIST_free(scts);
4427 return scts_extracted;
4431 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4432 * response (if it exists) and X509v3 extensions in the certificate.
4433 * Returns NULL if an error occurs.
4435 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4437 if (!s->scts_parsed) {
4438 if (ct_extract_tls_extension_scts(s) < 0 ||
4439 ct_extract_ocsp_response_scts(s) < 0 ||
4440 ct_extract_x509v3_extension_scts(s) < 0)
4450 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4451 const STACK_OF(SCT) *scts, void *unused_arg)
4456 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4457 const STACK_OF(SCT) *scts, void *unused_arg)
4459 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4462 for (i = 0; i < count; ++i) {
4463 SCT *sct = sk_SCT_value(scts, i);
4464 int status = SCT_get_validation_status(sct);
4466 if (status == SCT_VALIDATION_STATUS_VALID)
4469 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4473 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4477 * Since code exists that uses the custom extension handler for CT, look
4478 * for this and throw an error if they have already registered to use CT.
4480 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4481 TLSEXT_TYPE_signed_certificate_timestamp))
4483 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4484 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4488 if (callback != NULL) {
4490 * If we are validating CT, then we MUST accept SCTs served via OCSP
4492 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4496 s->ct_validation_callback = callback;
4497 s->ct_validation_callback_arg = arg;
4502 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4503 ssl_ct_validation_cb callback, void *arg)
4506 * Since code exists that uses the custom extension handler for CT, look for
4507 * this and throw an error if they have already registered to use CT.
4509 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4510 TLSEXT_TYPE_signed_certificate_timestamp))
4512 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4513 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4517 ctx->ct_validation_callback = callback;
4518 ctx->ct_validation_callback_arg = arg;
4522 int SSL_ct_is_enabled(const SSL *s)
4524 return s->ct_validation_callback != NULL;
4527 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4529 return ctx->ct_validation_callback != NULL;
4532 int ssl_validate_ct(SSL *s)
4535 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4537 SSL_DANE *dane = &s->dane;
4538 CT_POLICY_EVAL_CTX *ctx = NULL;
4539 const STACK_OF(SCT) *scts;
4542 * If no callback is set, the peer is anonymous, or its chain is invalid,
4543 * skip SCT validation - just return success. Applications that continue
4544 * handshakes without certificates, with unverified chains, or pinned leaf
4545 * certificates are outside the scope of the WebPKI and CT.
4547 * The above exclusions notwithstanding the vast majority of peers will
4548 * have rather ordinary certificate chains validated by typical
4549 * applications that perform certificate verification and therefore will
4550 * process SCTs when enabled.
4552 if (s->ct_validation_callback == NULL || cert == NULL ||
4553 s->verify_result != X509_V_OK ||
4554 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4558 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4559 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4561 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4562 switch (dane->mtlsa->usage) {
4563 case DANETLS_USAGE_DANE_TA:
4564 case DANETLS_USAGE_DANE_EE:
4569 ctx = CT_POLICY_EVAL_CTX_new();
4571 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4575 issuer = sk_X509_value(s->verified_chain, 1);
4576 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4577 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4578 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4579 CT_POLICY_EVAL_CTX_set_time(
4580 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4582 scts = SSL_get0_peer_scts(s);
4585 * This function returns success (> 0) only when all the SCTs are valid, 0
4586 * when some are invalid, and < 0 on various internal errors (out of
4587 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4588 * reason to abort the handshake, that decision is up to the callback.
4589 * Therefore, we error out only in the unexpected case that the return
4590 * value is negative.
4592 * XXX: One might well argue that the return value of this function is an
4593 * unfortunate design choice. Its job is only to determine the validation
4594 * status of each of the provided SCTs. So long as it correctly separates
4595 * the wheat from the chaff it should return success. Failure in this case
4596 * ought to correspond to an inability to carry out its duties.
4598 if (SCT_LIST_validate(scts, ctx) < 0) {
4599 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4603 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4605 ret = 0; /* This function returns 0 on failure */
4608 CT_POLICY_EVAL_CTX_free(ctx);
4610 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4611 * failure return code here. Also the application may wish the complete
4612 * the handshake, and then disconnect cleanly at a higher layer, after
4613 * checking the verification status of the completed connection.
4615 * We therefore force a certificate verification failure which will be
4616 * visible via SSL_get_verify_result() and cached as part of any resumed
4619 * Note: the permissive callback is for information gathering only, always
4620 * returns success, and does not affect verification status. Only the
4621 * strict callback or a custom application-specified callback can trigger
4622 * connection failure or record a verification error.
4625 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4629 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4631 switch (validation_mode) {
4633 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4635 case SSL_CT_VALIDATION_PERMISSIVE:
4636 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4637 case SSL_CT_VALIDATION_STRICT:
4638 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4642 int SSL_enable_ct(SSL *s, int validation_mode)
4644 switch (validation_mode) {
4646 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4648 case SSL_CT_VALIDATION_PERMISSIVE:
4649 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4650 case SSL_CT_VALIDATION_STRICT:
4651 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4655 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4657 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4660 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4662 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4665 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4667 CTLOG_STORE_free(ctx->ctlog_store);
4668 ctx->ctlog_store = logs;
4671 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4673 return ctx->ctlog_store;
4676 #endif /* OPENSSL_NO_CT */
4678 void SSL_CTX_set_early_cb(SSL_CTX *c, SSL_early_cb_fn cb, void *arg)
4681 c->early_cb_arg = arg;
4684 int SSL_early_isv2(SSL *s)
4686 if (s->clienthello == NULL)
4688 return s->clienthello->isv2;
4691 unsigned int SSL_early_get0_legacy_version(SSL *s)
4693 if (s->clienthello == NULL)
4695 return s->clienthello->legacy_version;
4698 size_t SSL_early_get0_random(SSL *s, const unsigned char **out)
4700 if (s->clienthello == NULL)
4703 *out = s->clienthello->random;
4704 return SSL3_RANDOM_SIZE;
4707 size_t SSL_early_get0_session_id(SSL *s, const unsigned char **out)
4709 if (s->clienthello == NULL)
4712 *out = s->clienthello->session_id;
4713 return s->clienthello->session_id_len;
4716 size_t SSL_early_get0_ciphers(SSL *s, const unsigned char **out)
4718 if (s->clienthello == NULL)
4721 *out = PACKET_data(&s->clienthello->ciphersuites);
4722 return PACKET_remaining(&s->clienthello->ciphersuites);
4725 size_t SSL_early_get0_compression_methods(SSL *s, const unsigned char **out)
4727 if (s->clienthello == NULL)
4730 *out = s->clienthello->compressions;
4731 return s->clienthello->compressions_len;
4734 int SSL_early_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4740 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4742 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4743 ext = s->clienthello->pre_proc_exts + i;
4747 present = OPENSSL_malloc(sizeof(*present) * num);
4748 if (present == NULL)
4750 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4751 ext = s->clienthello->pre_proc_exts + i;
4753 if (ext->received_order >= num)
4755 present[ext->received_order] = ext->type;
4762 OPENSSL_free(present);
4766 int SSL_early_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4772 if (s->clienthello == NULL)
4774 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4775 r = s->clienthello->pre_proc_exts + i;
4776 if (r->present && r->type == type) {
4778 *out = PACKET_data(&r->data);
4780 *outlen = PACKET_remaining(&r->data);
4787 int SSL_free_buffers(SSL *ssl)
4789 RECORD_LAYER *rl = &ssl->rlayer;
4791 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4794 RECORD_LAYER_release(rl);
4798 int SSL_alloc_buffers(SSL *ssl)
4800 return ssl3_setup_buffers(ssl);
4803 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4805 ctx->keylog_callback = cb;
4808 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4810 return ctx->keylog_callback;
4813 static int nss_keylog_int(const char *prefix,
4815 const uint8_t *parameter_1,
4816 size_t parameter_1_len,
4817 const uint8_t *parameter_2,
4818 size_t parameter_2_len)
4821 char *cursor = NULL;
4826 if (ssl->ctx->keylog_callback == NULL) return 1;
4829 * Our output buffer will contain the following strings, rendered with
4830 * space characters in between, terminated by a NULL character: first the
4831 * prefix, then the first parameter, then the second parameter. The
4832 * meaning of each parameter depends on the specific key material being
4833 * logged. Note that the first and second parameters are encoded in
4834 * hexadecimal, so we need a buffer that is twice their lengths.
4836 prefix_len = strlen(prefix);
4837 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4838 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4839 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4843 strcpy(cursor, prefix);
4844 cursor += prefix_len;
4847 for (i = 0; i < parameter_1_len; i++) {
4848 sprintf(cursor, "%02x", parameter_1[i]);
4853 for (i = 0; i < parameter_2_len; i++) {
4854 sprintf(cursor, "%02x", parameter_2[i]);
4859 ssl->ctx->keylog_callback(ssl, (const char *)out);
4865 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4866 const uint8_t *encrypted_premaster,
4867 size_t encrypted_premaster_len,
4868 const uint8_t *premaster,
4869 size_t premaster_len)
4871 if (encrypted_premaster_len < 8) {
4872 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4876 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4877 return nss_keylog_int("RSA",
4879 encrypted_premaster,
4885 int ssl_log_secret(SSL *ssl,
4887 const uint8_t *secret,
4890 return nss_keylog_int(label,
4892 ssl->s3->client_random,
4898 #define SSLV2_CIPHER_LEN 3
4900 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4905 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4907 if (PACKET_remaining(cipher_suites) == 0) {
4908 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4909 *al = SSL_AD_ILLEGAL_PARAMETER;
4913 if (PACKET_remaining(cipher_suites) % n != 0) {
4914 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4915 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4916 *al = SSL_AD_DECODE_ERROR;
4920 OPENSSL_free(s->s3->tmp.ciphers_raw);
4921 s->s3->tmp.ciphers_raw = NULL;
4922 s->s3->tmp.ciphers_rawlen = 0;
4925 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4926 PACKET sslv2ciphers = *cipher_suites;
4927 unsigned int leadbyte;
4931 * We store the raw ciphers list in SSLv3+ format so we need to do some
4932 * preprocessing to convert the list first. If there are any SSLv2 only
4933 * ciphersuites with a non-zero leading byte then we are going to
4934 * slightly over allocate because we won't store those. But that isn't a
4937 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4938 s->s3->tmp.ciphers_raw = raw;
4940 *al = SSL_AD_INTERNAL_ERROR;
4943 for (s->s3->tmp.ciphers_rawlen = 0;
4944 PACKET_remaining(&sslv2ciphers) > 0;
4945 raw += TLS_CIPHER_LEN) {
4946 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4948 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4951 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4952 *al = SSL_AD_DECODE_ERROR;
4953 OPENSSL_free(s->s3->tmp.ciphers_raw);
4954 s->s3->tmp.ciphers_raw = NULL;
4955 s->s3->tmp.ciphers_rawlen = 0;
4959 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
4961 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
4962 &s->s3->tmp.ciphers_rawlen)) {
4963 *al = SSL_AD_INTERNAL_ERROR;
4971 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
4972 int isv2format, STACK_OF(SSL_CIPHER) **sk,
4973 STACK_OF(SSL_CIPHER) **scsvs)
4978 if (!PACKET_buf_init(&pkt, bytes, len))
4980 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
4983 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
4984 STACK_OF(SSL_CIPHER) **skp,
4985 STACK_OF(SSL_CIPHER) **scsvs_out,
4986 int sslv2format, int *al)
4988 const SSL_CIPHER *c;
4989 STACK_OF(SSL_CIPHER) *sk = NULL;
4990 STACK_OF(SSL_CIPHER) *scsvs = NULL;
4992 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4993 unsigned char cipher[SSLV2_CIPHER_LEN];
4995 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4997 if (PACKET_remaining(cipher_suites) == 0) {
4998 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
4999 *al = SSL_AD_ILLEGAL_PARAMETER;
5003 if (PACKET_remaining(cipher_suites) % n != 0) {
5004 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5005 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5006 *al = SSL_AD_DECODE_ERROR;
5010 sk = sk_SSL_CIPHER_new_null();
5011 scsvs = sk_SSL_CIPHER_new_null();
5012 if (sk == NULL || scsvs == NULL) {
5013 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5014 *al = SSL_AD_INTERNAL_ERROR;
5018 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5020 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5021 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5022 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5024 if (sslv2format && cipher[0] != '\0')
5027 /* For SSLv2-compat, ignore leading 0-byte. */
5028 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5030 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5031 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5032 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5033 *al = SSL_AD_INTERNAL_ERROR;
5038 if (PACKET_remaining(cipher_suites) > 0) {
5039 *al = SSL_AD_DECODE_ERROR;
5040 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5047 sk_SSL_CIPHER_free(sk);
5048 if (scsvs_out != NULL)
5051 sk_SSL_CIPHER_free(scsvs);
5054 sk_SSL_CIPHER_free(sk);
5055 sk_SSL_CIPHER_free(scsvs);
5059 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5061 ctx->max_early_data = max_early_data;
5066 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5068 return ctx->max_early_data;
5071 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5073 s->max_early_data = max_early_data;
5078 uint32_t SSL_get_max_early_data(const SSL *s)
5080 return s->max_early_data;