2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
45 #include <openssl/objects.h>
46 #include <openssl/lhash.h>
47 #include <openssl/x509v3.h>
48 #include <openssl/rand.h>
49 #include <openssl/ocsp.h>
50 #include <openssl/dh.h>
51 #include <openssl/engine.h>
52 #include <openssl/async.h>
53 #include <openssl/ct.h>
55 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
57 SSL3_ENC_METHOD ssl3_undef_enc_method = {
59 * evil casts, but these functions are only called if there's a library
62 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
63 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
64 ssl_undefined_function,
65 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
66 ssl_undefined_function,
67 (int (*)(SSL *, int))ssl_undefined_function,
68 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
69 ssl_undefined_function,
70 NULL, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL, /* server_finished_label */
73 0, /* server_finished_label_len */
74 (int (*)(int))ssl_undefined_function,
75 (int (*)(SSL *, unsigned char *, size_t, const char *,
76 size_t, const unsigned char *, size_t,
77 int use_context))ssl_undefined_function,
80 struct ssl_async_args {
84 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
86 int (*func_read) (SSL *, void *, size_t, size_t *);
87 int (*func_write) (SSL *, const void *, size_t, size_t *);
88 int (*func_other) (SSL *);
98 DANETLS_MATCHING_FULL, 0, NID_undef
101 DANETLS_MATCHING_2256, 1, NID_sha256
104 DANETLS_MATCHING_2512, 2, NID_sha512
108 static int dane_ctx_enable(struct dane_ctx_st *dctx)
110 const EVP_MD **mdevp;
112 uint8_t mdmax = DANETLS_MATCHING_LAST;
113 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
116 if (dctx->mdevp != NULL)
119 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
120 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
122 if (mdord == NULL || mdevp == NULL) {
125 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
129 /* Install default entries */
130 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
133 if (dane_mds[i].nid == NID_undef ||
134 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
136 mdevp[dane_mds[i].mtype] = md;
137 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
147 static void dane_ctx_final(struct dane_ctx_st *dctx)
149 OPENSSL_free(dctx->mdevp);
152 OPENSSL_free(dctx->mdord);
157 static void tlsa_free(danetls_record *t)
161 OPENSSL_free(t->data);
162 EVP_PKEY_free(t->spki);
166 static void dane_final(SSL_DANE *dane)
168 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
171 sk_X509_pop_free(dane->certs, X509_free);
174 X509_free(dane->mcert);
182 * dane_copy - Copy dane configuration, sans verification state.
184 static int ssl_dane_dup(SSL *to, SSL *from)
189 if (!DANETLS_ENABLED(&from->dane))
192 dane_final(&to->dane);
193 to->dane.flags = from->dane.flags;
194 to->dane.dctx = &to->ctx->dane;
195 to->dane.trecs = sk_danetls_record_new_null();
197 if (to->dane.trecs == NULL) {
198 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
202 num = sk_danetls_record_num(from->dane.trecs);
203 for (i = 0; i < num; ++i) {
204 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
206 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
207 t->data, t->dlen) <= 0)
213 static int dane_mtype_set(struct dane_ctx_st *dctx,
214 const EVP_MD *md, uint8_t mtype, uint8_t ord)
218 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
219 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
223 if (mtype > dctx->mdmax) {
224 const EVP_MD **mdevp;
226 int n = ((int)mtype) + 1;
228 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
230 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
235 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
237 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
242 /* Zero-fill any gaps */
243 for (i = dctx->mdmax + 1; i < mtype; ++i) {
251 dctx->mdevp[mtype] = md;
252 /* Coerce ordinal of disabled matching types to 0 */
253 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
258 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
260 if (mtype > dane->dctx->mdmax)
262 return dane->dctx->mdevp[mtype];
265 static int dane_tlsa_add(SSL_DANE *dane,
268 uint8_t mtype, unsigned char *data, size_t dlen)
271 const EVP_MD *md = NULL;
272 int ilen = (int)dlen;
276 if (dane->trecs == NULL) {
277 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
281 if (ilen < 0 || dlen != (size_t)ilen) {
282 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
286 if (usage > DANETLS_USAGE_LAST) {
287 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
291 if (selector > DANETLS_SELECTOR_LAST) {
292 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
296 if (mtype != DANETLS_MATCHING_FULL) {
297 md = tlsa_md_get(dane, mtype);
299 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
304 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
305 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
309 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
313 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
314 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
319 t->selector = selector;
321 t->data = OPENSSL_malloc(dlen);
322 if (t->data == NULL) {
324 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
327 memcpy(t->data, data, dlen);
330 /* Validate and cache full certificate or public key */
331 if (mtype == DANETLS_MATCHING_FULL) {
332 const unsigned char *p = data;
334 EVP_PKEY *pkey = NULL;
337 case DANETLS_SELECTOR_CERT:
338 if (!d2i_X509(&cert, &p, ilen) || p < data ||
339 dlen != (size_t)(p - data)) {
341 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
344 if (X509_get0_pubkey(cert) == NULL) {
346 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
350 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
356 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
357 * records that contain full certificates of trust-anchors that are
358 * not present in the wire chain. For usage PKIX-TA(0), we augment
359 * the chain with untrusted Full(0) certificates from DNS, in case
360 * they are missing from the chain.
362 if ((dane->certs == NULL &&
363 (dane->certs = sk_X509_new_null()) == NULL) ||
364 !sk_X509_push(dane->certs, cert)) {
365 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
372 case DANETLS_SELECTOR_SPKI:
373 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
374 dlen != (size_t)(p - data)) {
376 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
381 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
382 * records that contain full bare keys of trust-anchors that are
383 * not present in the wire chain.
385 if (usage == DANETLS_USAGE_DANE_TA)
394 * Find the right insertion point for the new record.
396 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
397 * they can be processed first, as they require no chain building, and no
398 * expiration or hostname checks. Because DANE-EE(3) is numerically
399 * largest, this is accomplished via descending sort by "usage".
401 * We also sort in descending order by matching ordinal to simplify
402 * the implementation of digest agility in the verification code.
404 * The choice of order for the selector is not significant, so we
405 * use the same descending order for consistency.
407 num = sk_danetls_record_num(dane->trecs);
408 for (i = 0; i < num; ++i) {
409 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
411 if (rec->usage > usage)
413 if (rec->usage < usage)
415 if (rec->selector > selector)
417 if (rec->selector < selector)
419 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
424 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
426 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
429 dane->umask |= DANETLS_USAGE_BIT(usage);
434 static void clear_ciphers(SSL *s)
436 /* clear the current cipher */
437 ssl_clear_cipher_ctx(s);
438 ssl_clear_hash_ctx(&s->read_hash);
439 ssl_clear_hash_ctx(&s->write_hash);
442 int SSL_clear(SSL *s)
444 if (s->method == NULL) {
445 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
449 if (ssl_clear_bad_session(s)) {
450 SSL_SESSION_free(s->session);
458 if (s->renegotiate) {
459 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
463 ossl_statem_clear(s);
465 s->version = s->method->version;
466 s->client_version = s->version;
467 s->rwstate = SSL_NOTHING;
469 BUF_MEM_free(s->init_buf);
474 s->key_update = SSL_KEY_UPDATE_NONE;
476 /* Reset DANE verification result state */
479 X509_free(s->dane.mcert);
480 s->dane.mcert = NULL;
481 s->dane.mtlsa = NULL;
483 /* Clear the verification result peername */
484 X509_VERIFY_PARAM_move_peername(s->param, NULL);
487 * Check to see if we were changed into a different method, if so, revert
488 * back if we are not doing session-id reuse.
490 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
491 && (s->method != s->ctx->method)) {
492 s->method->ssl_free(s);
493 s->method = s->ctx->method;
494 if (!s->method->ssl_new(s))
497 s->method->ssl_clear(s);
499 RECORD_LAYER_clear(&s->rlayer);
504 /** Used to change an SSL_CTXs default SSL method type */
505 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
507 STACK_OF(SSL_CIPHER) *sk;
511 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
512 &(ctx->cipher_list_by_id),
513 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
514 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
515 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
521 SSL *SSL_new(SSL_CTX *ctx)
526 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
529 if (ctx->method == NULL) {
530 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
534 s = OPENSSL_zalloc(sizeof(*s));
538 s->lock = CRYPTO_THREAD_lock_new();
539 if (s->lock == NULL) {
540 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
545 RECORD_LAYER_init(&s->rlayer, s);
547 s->options = ctx->options;
548 s->dane.flags = ctx->dane.flags;
549 s->min_proto_version = ctx->min_proto_version;
550 s->max_proto_version = ctx->max_proto_version;
552 s->max_cert_list = ctx->max_cert_list;
556 * Earlier library versions used to copy the pointer to the CERT, not
557 * its contents; only when setting new parameters for the per-SSL
558 * copy, ssl_cert_new would be called (and the direct reference to
559 * the per-SSL_CTX settings would be lost, but those still were
560 * indirectly accessed for various purposes, and for that reason they
561 * used to be known as s->ctx->default_cert). Now we don't look at the
562 * SSL_CTX's CERT after having duplicated it once.
564 s->cert = ssl_cert_dup(ctx->cert);
568 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
569 s->msg_callback = ctx->msg_callback;
570 s->msg_callback_arg = ctx->msg_callback_arg;
571 s->verify_mode = ctx->verify_mode;
572 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
573 s->sid_ctx_length = ctx->sid_ctx_length;
574 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
575 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
576 s->verify_callback = ctx->default_verify_callback;
577 s->generate_session_id = ctx->generate_session_id;
579 s->param = X509_VERIFY_PARAM_new();
580 if (s->param == NULL)
582 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
583 s->quiet_shutdown = ctx->quiet_shutdown;
584 s->max_send_fragment = ctx->max_send_fragment;
585 s->split_send_fragment = ctx->split_send_fragment;
586 s->max_pipelines = ctx->max_pipelines;
587 if (s->max_pipelines > 1)
588 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
589 if (ctx->default_read_buf_len > 0)
590 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
595 s->ext.debug_arg = NULL;
596 s->ext.ticket_expected = 0;
597 s->ext.status_type = ctx->ext.status_type;
598 s->ext.status_expected = 0;
599 s->ext.ocsp.ids = NULL;
600 s->ext.ocsp.exts = NULL;
601 s->ext.ocsp.resp = NULL;
602 s->ext.ocsp.resp_len = 0;
604 s->session_ctx = ctx;
605 #ifndef OPENSSL_NO_EC
606 if (ctx->ext.ecpointformats) {
607 s->ext.ecpointformats =
608 OPENSSL_memdup(ctx->ext.ecpointformats,
609 ctx->ext.ecpointformats_len);
610 if (!s->ext.ecpointformats)
612 s->ext.ecpointformats_len =
613 ctx->ext.ecpointformats_len;
615 if (ctx->ext.supportedgroups) {
616 s->ext.supportedgroups =
617 OPENSSL_memdup(ctx->ext.supportedgroups,
618 ctx->ext.supportedgroups_len);
619 if (!s->ext.supportedgroups)
621 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
624 #ifndef OPENSSL_NO_NEXTPROTONEG
628 if (s->ctx->ext.alpn) {
629 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
630 if (s->ext.alpn == NULL)
632 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
633 s->ext.alpn_len = s->ctx->ext.alpn_len;
636 s->verified_chain = NULL;
637 s->verify_result = X509_V_OK;
639 s->default_passwd_callback = ctx->default_passwd_callback;
640 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
642 s->method = ctx->method;
644 s->key_update = SSL_KEY_UPDATE_NONE;
646 if (!s->method->ssl_new(s))
649 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
654 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
657 #ifndef OPENSSL_NO_PSK
658 s->psk_client_callback = ctx->psk_client_callback;
659 s->psk_server_callback = ctx->psk_server_callback;
664 #ifndef OPENSSL_NO_CT
665 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
666 ctx->ct_validation_callback_arg))
673 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
677 int SSL_is_dtls(const SSL *s)
679 return SSL_IS_DTLS(s) ? 1 : 0;
682 int SSL_up_ref(SSL *s)
686 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
689 REF_PRINT_COUNT("SSL", s);
690 REF_ASSERT_ISNT(i < 2);
691 return ((i > 1) ? 1 : 0);
694 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
695 unsigned int sid_ctx_len)
697 if (sid_ctx_len > sizeof ctx->sid_ctx) {
698 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
699 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
702 ctx->sid_ctx_length = sid_ctx_len;
703 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
708 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
709 unsigned int sid_ctx_len)
711 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
712 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
713 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
716 ssl->sid_ctx_length = sid_ctx_len;
717 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
722 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
724 CRYPTO_THREAD_write_lock(ctx->lock);
725 ctx->generate_session_id = cb;
726 CRYPTO_THREAD_unlock(ctx->lock);
730 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
732 CRYPTO_THREAD_write_lock(ssl->lock);
733 ssl->generate_session_id = cb;
734 CRYPTO_THREAD_unlock(ssl->lock);
738 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
742 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
743 * we can "construct" a session to give us the desired check - ie. to
744 * find if there's a session in the hash table that would conflict with
745 * any new session built out of this id/id_len and the ssl_version in use
750 if (id_len > sizeof r.session_id)
753 r.ssl_version = ssl->version;
754 r.session_id_length = id_len;
755 memcpy(r.session_id, id, id_len);
757 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
758 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
759 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
763 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
765 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
768 int SSL_set_purpose(SSL *s, int purpose)
770 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
773 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
775 return X509_VERIFY_PARAM_set_trust(s->param, trust);
778 int SSL_set_trust(SSL *s, int trust)
780 return X509_VERIFY_PARAM_set_trust(s->param, trust);
783 int SSL_set1_host(SSL *s, const char *hostname)
785 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
788 int SSL_add1_host(SSL *s, const char *hostname)
790 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
793 void SSL_set_hostflags(SSL *s, unsigned int flags)
795 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
798 const char *SSL_get0_peername(SSL *s)
800 return X509_VERIFY_PARAM_get0_peername(s->param);
803 int SSL_CTX_dane_enable(SSL_CTX *ctx)
805 return dane_ctx_enable(&ctx->dane);
808 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
810 unsigned long orig = ctx->dane.flags;
812 ctx->dane.flags |= flags;
816 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
818 unsigned long orig = ctx->dane.flags;
820 ctx->dane.flags &= ~flags;
824 int SSL_dane_enable(SSL *s, const char *basedomain)
826 SSL_DANE *dane = &s->dane;
828 if (s->ctx->dane.mdmax == 0) {
829 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
832 if (dane->trecs != NULL) {
833 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
838 * Default SNI name. This rejects empty names, while set1_host below
839 * accepts them and disables host name checks. To avoid side-effects with
840 * invalid input, set the SNI name first.
842 if (s->ext.hostname == NULL) {
843 if (!SSL_set_tlsext_host_name(s, basedomain)) {
844 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
849 /* Primary RFC6125 reference identifier */
850 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
851 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
857 dane->dctx = &s->ctx->dane;
858 dane->trecs = sk_danetls_record_new_null();
860 if (dane->trecs == NULL) {
861 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
867 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
869 unsigned long orig = ssl->dane.flags;
871 ssl->dane.flags |= flags;
875 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
877 unsigned long orig = ssl->dane.flags;
879 ssl->dane.flags &= ~flags;
883 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
885 SSL_DANE *dane = &s->dane;
887 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
891 *mcert = dane->mcert;
893 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
898 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
899 uint8_t *mtype, unsigned const char **data, size_t *dlen)
901 SSL_DANE *dane = &s->dane;
903 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
907 *usage = dane->mtlsa->usage;
909 *selector = dane->mtlsa->selector;
911 *mtype = dane->mtlsa->mtype;
913 *data = dane->mtlsa->data;
915 *dlen = dane->mtlsa->dlen;
920 SSL_DANE *SSL_get0_dane(SSL *s)
925 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
926 uint8_t mtype, unsigned char *data, size_t dlen)
928 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
931 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
934 return dane_mtype_set(&ctx->dane, md, mtype, ord);
937 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
939 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
942 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
944 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
947 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
952 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
957 void SSL_certs_clear(SSL *s)
959 ssl_cert_clear_certs(s->cert);
962 void SSL_free(SSL *s)
969 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
970 REF_PRINT_COUNT("SSL", s);
973 REF_ASSERT_ISNT(i < 0);
975 X509_VERIFY_PARAM_free(s->param);
976 dane_final(&s->dane);
977 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
979 ssl_free_wbio_buffer(s);
981 BIO_free_all(s->wbio);
982 BIO_free_all(s->rbio);
984 BUF_MEM_free(s->init_buf);
986 /* add extra stuff */
987 sk_SSL_CIPHER_free(s->cipher_list);
988 sk_SSL_CIPHER_free(s->cipher_list_by_id);
990 /* Make the next call work :-) */
991 if (s->session != NULL) {
992 ssl_clear_bad_session(s);
993 SSL_SESSION_free(s->session);
998 ssl_cert_free(s->cert);
999 /* Free up if allocated */
1001 OPENSSL_free(s->ext.hostname);
1002 SSL_CTX_free(s->session_ctx);
1003 #ifndef OPENSSL_NO_EC
1004 OPENSSL_free(s->ext.ecpointformats);
1005 OPENSSL_free(s->ext.supportedgroups);
1006 #endif /* OPENSSL_NO_EC */
1007 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1008 #ifndef OPENSSL_NO_OCSP
1009 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1011 #ifndef OPENSSL_NO_CT
1012 SCT_LIST_free(s->scts);
1013 OPENSSL_free(s->ext.scts);
1015 OPENSSL_free(s->ext.ocsp.resp);
1016 OPENSSL_free(s->ext.alpn);
1018 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1020 sk_X509_pop_free(s->verified_chain, X509_free);
1022 if (s->method != NULL)
1023 s->method->ssl_free(s);
1025 RECORD_LAYER_release(&s->rlayer);
1027 SSL_CTX_free(s->ctx);
1029 ASYNC_WAIT_CTX_free(s->waitctx);
1031 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1032 OPENSSL_free(s->ext.npn);
1035 #ifndef OPENSSL_NO_SRTP
1036 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1039 CRYPTO_THREAD_lock_free(s->lock);
1044 void SSL_set0_rbio(SSL *s, BIO *rbio)
1046 BIO_free_all(s->rbio);
1050 void SSL_set0_wbio(SSL *s, BIO *wbio)
1053 * If the output buffering BIO is still in place, remove it
1055 if (s->bbio != NULL)
1056 s->wbio = BIO_pop(s->wbio);
1058 BIO_free_all(s->wbio);
1061 /* Re-attach |bbio| to the new |wbio|. */
1062 if (s->bbio != NULL)
1063 s->wbio = BIO_push(s->bbio, s->wbio);
1066 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1069 * For historical reasons, this function has many different cases in
1070 * ownership handling.
1073 /* If nothing has changed, do nothing */
1074 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1078 * If the two arguments are equal then one fewer reference is granted by the
1079 * caller than we want to take
1081 if (rbio != NULL && rbio == wbio)
1085 * If only the wbio is changed only adopt one reference.
1087 if (rbio == SSL_get_rbio(s)) {
1088 SSL_set0_wbio(s, wbio);
1092 * There is an asymmetry here for historical reasons. If only the rbio is
1093 * changed AND the rbio and wbio were originally different, then we only
1094 * adopt one reference.
1096 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1097 SSL_set0_rbio(s, rbio);
1101 /* Otherwise, adopt both references. */
1102 SSL_set0_rbio(s, rbio);
1103 SSL_set0_wbio(s, wbio);
1106 BIO *SSL_get_rbio(const SSL *s)
1111 BIO *SSL_get_wbio(const SSL *s)
1113 if (s->bbio != NULL) {
1115 * If |bbio| is active, the true caller-configured BIO is its
1118 return BIO_next(s->bbio);
1123 int SSL_get_fd(const SSL *s)
1125 return SSL_get_rfd(s);
1128 int SSL_get_rfd(const SSL *s)
1133 b = SSL_get_rbio(s);
1134 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1136 BIO_get_fd(r, &ret);
1140 int SSL_get_wfd(const SSL *s)
1145 b = SSL_get_wbio(s);
1146 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1148 BIO_get_fd(r, &ret);
1152 #ifndef OPENSSL_NO_SOCK
1153 int SSL_set_fd(SSL *s, int fd)
1158 bio = BIO_new(BIO_s_socket());
1161 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1164 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1165 SSL_set_bio(s, bio, bio);
1171 int SSL_set_wfd(SSL *s, int fd)
1173 BIO *rbio = SSL_get_rbio(s);
1175 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1176 || (int)BIO_get_fd(rbio, NULL) != fd) {
1177 BIO *bio = BIO_new(BIO_s_socket());
1180 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1183 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1184 SSL_set0_wbio(s, bio);
1187 SSL_set0_wbio(s, rbio);
1192 int SSL_set_rfd(SSL *s, int fd)
1194 BIO *wbio = SSL_get_wbio(s);
1196 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1197 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1198 BIO *bio = BIO_new(BIO_s_socket());
1201 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1204 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1205 SSL_set0_rbio(s, bio);
1208 SSL_set0_rbio(s, wbio);
1215 /* return length of latest Finished message we sent, copy to 'buf' */
1216 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1220 if (s->s3 != NULL) {
1221 ret = s->s3->tmp.finish_md_len;
1224 memcpy(buf, s->s3->tmp.finish_md, count);
1229 /* return length of latest Finished message we expected, copy to 'buf' */
1230 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1234 if (s->s3 != NULL) {
1235 ret = s->s3->tmp.peer_finish_md_len;
1238 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1243 int SSL_get_verify_mode(const SSL *s)
1245 return (s->verify_mode);
1248 int SSL_get_verify_depth(const SSL *s)
1250 return X509_VERIFY_PARAM_get_depth(s->param);
1253 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1254 return (s->verify_callback);
1257 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1259 return (ctx->verify_mode);
1262 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1264 return X509_VERIFY_PARAM_get_depth(ctx->param);
1267 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1268 return (ctx->default_verify_callback);
1271 void SSL_set_verify(SSL *s, int mode,
1272 int (*callback) (int ok, X509_STORE_CTX *ctx))
1274 s->verify_mode = mode;
1275 if (callback != NULL)
1276 s->verify_callback = callback;
1279 void SSL_set_verify_depth(SSL *s, int depth)
1281 X509_VERIFY_PARAM_set_depth(s->param, depth);
1284 void SSL_set_read_ahead(SSL *s, int yes)
1286 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1289 int SSL_get_read_ahead(const SSL *s)
1291 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1294 int SSL_pending(const SSL *s)
1296 size_t pending = s->method->ssl_pending(s);
1299 * SSL_pending cannot work properly if read-ahead is enabled
1300 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1301 * impossible to fix since SSL_pending cannot report errors that may be
1302 * observed while scanning the new data. (Note that SSL_pending() is
1303 * often used as a boolean value, so we'd better not return -1.)
1305 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1306 * we just return INT_MAX.
1308 return pending < INT_MAX ? (int)pending : INT_MAX;
1311 int SSL_has_pending(const SSL *s)
1314 * Similar to SSL_pending() but returns a 1 to indicate that we have
1315 * unprocessed data available or 0 otherwise (as opposed to the number of
1316 * bytes available). Unlike SSL_pending() this will take into account
1317 * read_ahead data. A 1 return simply indicates that we have unprocessed
1318 * data. That data may not result in any application data, or we may fail
1319 * to parse the records for some reason.
1324 return RECORD_LAYER_read_pending(&s->rlayer);
1327 X509 *SSL_get_peer_certificate(const SSL *s)
1331 if ((s == NULL) || (s->session == NULL))
1334 r = s->session->peer;
1344 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1348 if ((s == NULL) || (s->session == NULL))
1351 r = s->session->peer_chain;
1354 * If we are a client, cert_chain includes the peer's own certificate; if
1355 * we are a server, it does not.
1362 * Now in theory, since the calling process own 't' it should be safe to
1363 * modify. We need to be able to read f without being hassled
1365 int SSL_copy_session_id(SSL *t, const SSL *f)
1368 /* Do we need to to SSL locking? */
1369 if (!SSL_set_session(t, SSL_get_session(f))) {
1374 * what if we are setup for one protocol version but want to talk another
1376 if (t->method != f->method) {
1377 t->method->ssl_free(t);
1378 t->method = f->method;
1379 if (t->method->ssl_new(t) == 0)
1383 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1384 ssl_cert_free(t->cert);
1386 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1393 /* Fix this so it checks all the valid key/cert options */
1394 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1396 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1397 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1400 if (ctx->cert->key->privatekey == NULL) {
1401 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1404 return (X509_check_private_key
1405 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1408 /* Fix this function so that it takes an optional type parameter */
1409 int SSL_check_private_key(const SSL *ssl)
1412 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1415 if (ssl->cert->key->x509 == NULL) {
1416 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1419 if (ssl->cert->key->privatekey == NULL) {
1420 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1423 return (X509_check_private_key(ssl->cert->key->x509,
1424 ssl->cert->key->privatekey));
1427 int SSL_waiting_for_async(SSL *s)
1435 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1437 ASYNC_WAIT_CTX *ctx = s->waitctx;
1441 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1444 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1445 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1447 ASYNC_WAIT_CTX *ctx = s->waitctx;
1451 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1455 int SSL_accept(SSL *s)
1457 if (s->handshake_func == NULL) {
1458 /* Not properly initialized yet */
1459 SSL_set_accept_state(s);
1462 return SSL_do_handshake(s);
1465 int SSL_connect(SSL *s)
1467 if (s->handshake_func == NULL) {
1468 /* Not properly initialized yet */
1469 SSL_set_connect_state(s);
1472 return SSL_do_handshake(s);
1475 long SSL_get_default_timeout(const SSL *s)
1477 return (s->method->get_timeout());
1480 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1481 int (*func) (void *))
1484 if (s->waitctx == NULL) {
1485 s->waitctx = ASYNC_WAIT_CTX_new();
1486 if (s->waitctx == NULL)
1489 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1490 sizeof(struct ssl_async_args))) {
1492 s->rwstate = SSL_NOTHING;
1493 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1496 s->rwstate = SSL_ASYNC_PAUSED;
1499 s->rwstate = SSL_ASYNC_NO_JOBS;
1505 s->rwstate = SSL_NOTHING;
1506 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1507 /* Shouldn't happen */
1512 static int ssl_io_intern(void *vargs)
1514 struct ssl_async_args *args;
1519 args = (struct ssl_async_args *)vargs;
1523 switch (args->type) {
1525 return args->f.func_read(s, buf, num, &s->asyncrw);
1527 return args->f.func_write(s, buf, num, &s->asyncrw);
1529 return args->f.func_other(s);
1534 int SSL_read(SSL *s, void *buf, int num)
1540 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1544 ret = SSL_read_ex(s, buf, (size_t)num, &readbytes);
1547 * The cast is safe here because ret should be <= INT_MAX because num is
1551 ret = (int)readbytes;
1556 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1558 if (s->handshake_func == NULL) {
1559 SSLerr(SSL_F_SSL_READ_EX, SSL_R_UNINITIALIZED);
1563 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1564 s->rwstate = SSL_NOTHING;
1568 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1569 struct ssl_async_args args;
1575 args.type = READFUNC;
1576 args.f.func_read = s->method->ssl_read;
1578 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1579 *readbytes = s->asyncrw;
1582 return s->method->ssl_read(s, buf, num, readbytes);
1586 int SSL_peek(SSL *s, void *buf, int num)
1592 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1596 ret = SSL_peek_ex(s, buf, (size_t)num, &readbytes);
1599 * The cast is safe here because ret should be <= INT_MAX because num is
1603 ret = (int)readbytes;
1608 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1610 if (s->handshake_func == NULL) {
1611 SSLerr(SSL_F_SSL_PEEK_EX, SSL_R_UNINITIALIZED);
1615 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1618 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1619 struct ssl_async_args args;
1625 args.type = READFUNC;
1626 args.f.func_read = s->method->ssl_peek;
1628 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1629 *readbytes = s->asyncrw;
1632 return s->method->ssl_peek(s, buf, num, readbytes);
1636 int SSL_write(SSL *s, const void *buf, int num)
1642 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1646 ret = SSL_write_ex(s, buf, (size_t)num, &written);
1649 * The cast is safe here because ret should be <= INT_MAX because num is
1658 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1660 if (s->handshake_func == NULL) {
1661 SSLerr(SSL_F_SSL_WRITE_EX, SSL_R_UNINITIALIZED);
1665 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1666 s->rwstate = SSL_NOTHING;
1667 SSLerr(SSL_F_SSL_WRITE_EX, SSL_R_PROTOCOL_IS_SHUTDOWN);
1671 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1673 struct ssl_async_args args;
1676 args.buf = (void *)buf;
1678 args.type = WRITEFUNC;
1679 args.f.func_write = s->method->ssl_write;
1681 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1682 *written = s->asyncrw;
1685 return s->method->ssl_write(s, buf, num, written);
1689 int SSL_shutdown(SSL *s)
1692 * Note that this function behaves differently from what one might
1693 * expect. Return values are 0 for no success (yet), 1 for success; but
1694 * calling it once is usually not enough, even if blocking I/O is used
1695 * (see ssl3_shutdown).
1698 if (s->handshake_func == NULL) {
1699 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1703 if (!SSL_in_init(s)) {
1704 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1705 struct ssl_async_args args;
1708 args.type = OTHERFUNC;
1709 args.f.func_other = s->method->ssl_shutdown;
1711 return ssl_start_async_job(s, &args, ssl_io_intern);
1713 return s->method->ssl_shutdown(s);
1716 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1721 int SSL_key_update(SSL *s, int updatetype)
1724 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1725 * negotiated, and that it is appropriate to call SSL_key_update() instead
1726 * of SSL_renegotiate().
1728 if (!SSL_IS_TLS13(s)) {
1729 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
1733 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
1734 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
1735 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
1739 if (!SSL_is_init_finished(s)) {
1740 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
1744 ossl_statem_set_in_init(s, 1);
1745 s->key_update = updatetype;
1749 int SSL_get_key_update_type(SSL *s)
1751 return s->key_update;
1754 int SSL_renegotiate(SSL *s)
1756 if (SSL_IS_TLS13(s)) {
1757 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
1761 if (s->renegotiate == 0)
1766 return (s->method->ssl_renegotiate(s));
1769 int SSL_renegotiate_abbreviated(SSL *s)
1771 if (SSL_IS_TLS13(s))
1774 if (s->renegotiate == 0)
1779 return (s->method->ssl_renegotiate(s));
1782 int SSL_renegotiate_pending(SSL *s)
1785 * becomes true when negotiation is requested; false again once a
1786 * handshake has finished
1788 return (s->renegotiate != 0);
1791 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1796 case SSL_CTRL_GET_READ_AHEAD:
1797 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1798 case SSL_CTRL_SET_READ_AHEAD:
1799 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1800 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1803 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1804 s->msg_callback_arg = parg;
1808 return (s->mode |= larg);
1809 case SSL_CTRL_CLEAR_MODE:
1810 return (s->mode &= ~larg);
1811 case SSL_CTRL_GET_MAX_CERT_LIST:
1812 return (long)(s->max_cert_list);
1813 case SSL_CTRL_SET_MAX_CERT_LIST:
1816 l = (long)s->max_cert_list;
1817 s->max_cert_list = (size_t)larg;
1819 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1820 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1822 s->max_send_fragment = larg;
1823 if (s->max_send_fragment < s->split_send_fragment)
1824 s->split_send_fragment = s->max_send_fragment;
1826 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1827 if ((size_t)larg > s->max_send_fragment || larg == 0)
1829 s->split_send_fragment = larg;
1831 case SSL_CTRL_SET_MAX_PIPELINES:
1832 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1834 s->max_pipelines = larg;
1836 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1838 case SSL_CTRL_GET_RI_SUPPORT:
1840 return s->s3->send_connection_binding;
1843 case SSL_CTRL_CERT_FLAGS:
1844 return (s->cert->cert_flags |= larg);
1845 case SSL_CTRL_CLEAR_CERT_FLAGS:
1846 return (s->cert->cert_flags &= ~larg);
1848 case SSL_CTRL_GET_RAW_CIPHERLIST:
1850 if (s->s3->tmp.ciphers_raw == NULL)
1852 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1853 return (int)s->s3->tmp.ciphers_rawlen;
1855 return TLS_CIPHER_LEN;
1857 case SSL_CTRL_GET_EXTMS_SUPPORT:
1858 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1860 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1864 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1865 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1866 &s->min_proto_version);
1867 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1868 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1869 &s->max_proto_version);
1871 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1875 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1878 case SSL_CTRL_SET_MSG_CALLBACK:
1879 s->msg_callback = (void (*)
1880 (int write_p, int version, int content_type,
1881 const void *buf, size_t len, SSL *ssl,
1886 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1890 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1892 return ctx->sessions;
1895 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1898 /* For some cases with ctx == NULL perform syntax checks */
1901 #ifndef OPENSSL_NO_EC
1902 case SSL_CTRL_SET_GROUPS_LIST:
1903 return tls1_set_groups_list(NULL, NULL, parg);
1905 case SSL_CTRL_SET_SIGALGS_LIST:
1906 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1907 return tls1_set_sigalgs_list(NULL, parg, 0);
1914 case SSL_CTRL_GET_READ_AHEAD:
1915 return (ctx->read_ahead);
1916 case SSL_CTRL_SET_READ_AHEAD:
1917 l = ctx->read_ahead;
1918 ctx->read_ahead = larg;
1921 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1922 ctx->msg_callback_arg = parg;
1925 case SSL_CTRL_GET_MAX_CERT_LIST:
1926 return (long)(ctx->max_cert_list);
1927 case SSL_CTRL_SET_MAX_CERT_LIST:
1930 l = (long)ctx->max_cert_list;
1931 ctx->max_cert_list = (size_t)larg;
1934 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1937 l = (long)ctx->session_cache_size;
1938 ctx->session_cache_size = (size_t)larg;
1940 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1941 return (long)(ctx->session_cache_size);
1942 case SSL_CTRL_SET_SESS_CACHE_MODE:
1943 l = ctx->session_cache_mode;
1944 ctx->session_cache_mode = larg;
1946 case SSL_CTRL_GET_SESS_CACHE_MODE:
1947 return (ctx->session_cache_mode);
1949 case SSL_CTRL_SESS_NUMBER:
1950 return (lh_SSL_SESSION_num_items(ctx->sessions));
1951 case SSL_CTRL_SESS_CONNECT:
1952 return (ctx->stats.sess_connect);
1953 case SSL_CTRL_SESS_CONNECT_GOOD:
1954 return (ctx->stats.sess_connect_good);
1955 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1956 return (ctx->stats.sess_connect_renegotiate);
1957 case SSL_CTRL_SESS_ACCEPT:
1958 return (ctx->stats.sess_accept);
1959 case SSL_CTRL_SESS_ACCEPT_GOOD:
1960 return (ctx->stats.sess_accept_good);
1961 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1962 return (ctx->stats.sess_accept_renegotiate);
1963 case SSL_CTRL_SESS_HIT:
1964 return (ctx->stats.sess_hit);
1965 case SSL_CTRL_SESS_CB_HIT:
1966 return (ctx->stats.sess_cb_hit);
1967 case SSL_CTRL_SESS_MISSES:
1968 return (ctx->stats.sess_miss);
1969 case SSL_CTRL_SESS_TIMEOUTS:
1970 return (ctx->stats.sess_timeout);
1971 case SSL_CTRL_SESS_CACHE_FULL:
1972 return (ctx->stats.sess_cache_full);
1974 return (ctx->mode |= larg);
1975 case SSL_CTRL_CLEAR_MODE:
1976 return (ctx->mode &= ~larg);
1977 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1978 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1980 ctx->max_send_fragment = larg;
1981 if (ctx->max_send_fragment < ctx->split_send_fragment)
1982 ctx->split_send_fragment = ctx->max_send_fragment;
1984 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1985 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
1987 ctx->split_send_fragment = larg;
1989 case SSL_CTRL_SET_MAX_PIPELINES:
1990 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1992 ctx->max_pipelines = larg;
1994 case SSL_CTRL_CERT_FLAGS:
1995 return (ctx->cert->cert_flags |= larg);
1996 case SSL_CTRL_CLEAR_CERT_FLAGS:
1997 return (ctx->cert->cert_flags &= ~larg);
1998 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1999 return ssl_set_version_bound(ctx->method->version, (int)larg,
2000 &ctx->min_proto_version);
2001 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2002 return ssl_set_version_bound(ctx->method->version, (int)larg,
2003 &ctx->max_proto_version);
2005 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2009 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2012 case SSL_CTRL_SET_MSG_CALLBACK:
2013 ctx->msg_callback = (void (*)
2014 (int write_p, int version, int content_type,
2015 const void *buf, size_t len, SSL *ssl,
2020 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2024 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2033 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2034 const SSL_CIPHER *const *bp)
2036 if ((*ap)->id > (*bp)->id)
2038 if ((*ap)->id < (*bp)->id)
2043 /** return a STACK of the ciphers available for the SSL and in order of
2045 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2048 if (s->cipher_list != NULL) {
2049 return (s->cipher_list);
2050 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2051 return (s->ctx->cipher_list);
2057 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2059 if ((s == NULL) || (s->session == NULL) || !s->server)
2061 return s->session->ciphers;
2064 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2066 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2068 ciphers = SSL_get_ciphers(s);
2071 ssl_set_client_disabled(s);
2072 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2073 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2074 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
2076 sk = sk_SSL_CIPHER_new_null();
2079 if (!sk_SSL_CIPHER_push(sk, c)) {
2080 sk_SSL_CIPHER_free(sk);
2088 /** return a STACK of the ciphers available for the SSL and in order of
2090 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2093 if (s->cipher_list_by_id != NULL) {
2094 return (s->cipher_list_by_id);
2095 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2096 return (s->ctx->cipher_list_by_id);
2102 /** The old interface to get the same thing as SSL_get_ciphers() */
2103 const char *SSL_get_cipher_list(const SSL *s, int n)
2105 const SSL_CIPHER *c;
2106 STACK_OF(SSL_CIPHER) *sk;
2110 sk = SSL_get_ciphers(s);
2111 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2113 c = sk_SSL_CIPHER_value(sk, n);
2119 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2121 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2124 return ctx->cipher_list;
2128 /** specify the ciphers to be used by default by the SSL_CTX */
2129 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2131 STACK_OF(SSL_CIPHER) *sk;
2133 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2134 &ctx->cipher_list_by_id, str, ctx->cert);
2136 * ssl_create_cipher_list may return an empty stack if it was unable to
2137 * find a cipher matching the given rule string (for example if the rule
2138 * string specifies a cipher which has been disabled). This is not an
2139 * error as far as ssl_create_cipher_list is concerned, and hence
2140 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2144 else if (sk_SSL_CIPHER_num(sk) == 0) {
2145 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2151 /** specify the ciphers to be used by the SSL */
2152 int SSL_set_cipher_list(SSL *s, const char *str)
2154 STACK_OF(SSL_CIPHER) *sk;
2156 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2157 &s->cipher_list_by_id, str, s->cert);
2158 /* see comment in SSL_CTX_set_cipher_list */
2161 else if (sk_SSL_CIPHER_num(sk) == 0) {
2162 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2168 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2171 STACK_OF(SSL_CIPHER) *sk;
2172 const SSL_CIPHER *c;
2175 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2179 sk = s->session->ciphers;
2181 if (sk_SSL_CIPHER_num(sk) == 0)
2184 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2187 c = sk_SSL_CIPHER_value(sk, i);
2188 n = strlen(c->name);
2195 memcpy(p, c->name, n + 1);
2204 /** return a servername extension value if provided in Client Hello, or NULL.
2205 * So far, only host_name types are defined (RFC 3546).
2208 const char *SSL_get_servername(const SSL *s, const int type)
2210 if (type != TLSEXT_NAMETYPE_host_name)
2213 return s->session && !s->ext.hostname ?
2214 s->session->ext.hostname : s->ext.hostname;
2217 int SSL_get_servername_type(const SSL *s)
2220 && (!s->ext.hostname ? s->session->
2221 ext.hostname : s->ext.hostname))
2222 return TLSEXT_NAMETYPE_host_name;
2227 * SSL_select_next_proto implements the standard protocol selection. It is
2228 * expected that this function is called from the callback set by
2229 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2230 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2231 * not included in the length. A byte string of length 0 is invalid. No byte
2232 * string may be truncated. The current, but experimental algorithm for
2233 * selecting the protocol is: 1) If the server doesn't support NPN then this
2234 * is indicated to the callback. In this case, the client application has to
2235 * abort the connection or have a default application level protocol. 2) If
2236 * the server supports NPN, but advertises an empty list then the client
2237 * selects the first protocol in its list, but indicates via the API that this
2238 * fallback case was enacted. 3) Otherwise, the client finds the first
2239 * protocol in the server's list that it supports and selects this protocol.
2240 * This is because it's assumed that the server has better information about
2241 * which protocol a client should use. 4) If the client doesn't support any
2242 * of the server's advertised protocols, then this is treated the same as
2243 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2244 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2246 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2247 const unsigned char *server,
2248 unsigned int server_len,
2249 const unsigned char *client, unsigned int client_len)
2252 const unsigned char *result;
2253 int status = OPENSSL_NPN_UNSUPPORTED;
2256 * For each protocol in server preference order, see if we support it.
2258 for (i = 0; i < server_len;) {
2259 for (j = 0; j < client_len;) {
2260 if (server[i] == client[j] &&
2261 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2262 /* We found a match */
2263 result = &server[i];
2264 status = OPENSSL_NPN_NEGOTIATED;
2274 /* There's no overlap between our protocols and the server's list. */
2276 status = OPENSSL_NPN_NO_OVERLAP;
2279 *out = (unsigned char *)result + 1;
2280 *outlen = result[0];
2284 #ifndef OPENSSL_NO_NEXTPROTONEG
2286 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2287 * client's requested protocol for this connection and returns 0. If the
2288 * client didn't request any protocol, then *data is set to NULL. Note that
2289 * the client can request any protocol it chooses. The value returned from
2290 * this function need not be a member of the list of supported protocols
2291 * provided by the callback.
2293 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2300 *len = (unsigned int)s->ext.npn_len;
2305 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2306 * a TLS server needs a list of supported protocols for Next Protocol
2307 * Negotiation. The returned list must be in wire format. The list is
2308 * returned by setting |out| to point to it and |outlen| to its length. This
2309 * memory will not be modified, but one should assume that the SSL* keeps a
2310 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2311 * wishes to advertise. Otherwise, no such extension will be included in the
2314 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2315 SSL_CTX_npn_advertised_cb_func cb,
2318 ctx->ext.npn_advertised_cb = cb;
2319 ctx->ext.npn_advertised_cb_arg = arg;
2323 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2324 * client needs to select a protocol from the server's provided list. |out|
2325 * must be set to point to the selected protocol (which may be within |in|).
2326 * The length of the protocol name must be written into |outlen|. The
2327 * server's advertised protocols are provided in |in| and |inlen|. The
2328 * callback can assume that |in| is syntactically valid. The client must
2329 * select a protocol. It is fatal to the connection if this callback returns
2330 * a value other than SSL_TLSEXT_ERR_OK.
2332 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2333 SSL_CTX_npn_select_cb_func cb,
2336 ctx->ext.npn_select_cb = cb;
2337 ctx->ext.npn_select_cb_arg = arg;
2342 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2343 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2344 * length-prefixed strings). Returns 0 on success.
2346 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2347 unsigned int protos_len)
2349 OPENSSL_free(ctx->ext.alpn);
2350 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2351 if (ctx->ext.alpn == NULL) {
2352 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2355 ctx->ext.alpn_len = protos_len;
2361 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2362 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2363 * length-prefixed strings). Returns 0 on success.
2365 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2366 unsigned int protos_len)
2368 OPENSSL_free(ssl->ext.alpn);
2369 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2370 if (ssl->ext.alpn == NULL) {
2371 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2374 ssl->ext.alpn_len = protos_len;
2380 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2381 * called during ClientHello processing in order to select an ALPN protocol
2382 * from the client's list of offered protocols.
2384 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2385 SSL_CTX_alpn_select_cb_func cb,
2388 ctx->ext.alpn_select_cb = cb;
2389 ctx->ext.alpn_select_cb_arg = arg;
2393 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2394 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2395 * (not including the leading length-prefix byte). If the server didn't
2396 * respond with a negotiated protocol then |*len| will be zero.
2398 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2403 *data = ssl->s3->alpn_selected;
2407 *len = (unsigned int)ssl->s3->alpn_selected_len;
2410 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2411 const char *label, size_t llen,
2412 const unsigned char *p, size_t plen,
2415 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2418 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2423 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2425 const unsigned char *session_id = a->session_id;
2427 unsigned char tmp_storage[4];
2429 if (a->session_id_length < sizeof(tmp_storage)) {
2430 memset(tmp_storage, 0, sizeof(tmp_storage));
2431 memcpy(tmp_storage, a->session_id, a->session_id_length);
2432 session_id = tmp_storage;
2436 ((unsigned long)session_id[0]) |
2437 ((unsigned long)session_id[1] << 8L) |
2438 ((unsigned long)session_id[2] << 16L) |
2439 ((unsigned long)session_id[3] << 24L);
2444 * NB: If this function (or indeed the hash function which uses a sort of
2445 * coarser function than this one) is changed, ensure
2446 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2447 * being able to construct an SSL_SESSION that will collide with any existing
2448 * session with a matching session ID.
2450 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2452 if (a->ssl_version != b->ssl_version)
2454 if (a->session_id_length != b->session_id_length)
2456 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2460 * These wrapper functions should remain rather than redeclaring
2461 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2462 * variable. The reason is that the functions aren't static, they're exposed
2466 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2468 SSL_CTX *ret = NULL;
2471 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2475 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2478 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2479 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2483 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2484 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2487 ret = OPENSSL_zalloc(sizeof(*ret));
2492 ret->min_proto_version = 0;
2493 ret->max_proto_version = 0;
2494 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2495 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2496 /* We take the system default. */
2497 ret->session_timeout = meth->get_timeout();
2498 ret->references = 1;
2499 ret->lock = CRYPTO_THREAD_lock_new();
2500 if (ret->lock == NULL) {
2501 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2505 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2506 ret->verify_mode = SSL_VERIFY_NONE;
2507 if ((ret->cert = ssl_cert_new()) == NULL)
2510 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2511 if (ret->sessions == NULL)
2513 ret->cert_store = X509_STORE_new();
2514 if (ret->cert_store == NULL)
2516 #ifndef OPENSSL_NO_CT
2517 ret->ctlog_store = CTLOG_STORE_new();
2518 if (ret->ctlog_store == NULL)
2521 if (!ssl_create_cipher_list(ret->method,
2522 &ret->cipher_list, &ret->cipher_list_by_id,
2523 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2524 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2525 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2529 ret->param = X509_VERIFY_PARAM_new();
2530 if (ret->param == NULL)
2533 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2534 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2537 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2538 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2542 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2545 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2548 /* No compression for DTLS */
2549 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2550 ret->comp_methods = SSL_COMP_get_compression_methods();
2552 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2553 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2555 /* Setup RFC5077 ticket keys */
2556 if ((RAND_bytes(ret->ext.tick_key_name,
2557 sizeof(ret->ext.tick_key_name)) <= 0)
2558 || (RAND_bytes(ret->ext.tick_hmac_key,
2559 sizeof(ret->ext.tick_hmac_key)) <= 0)
2560 || (RAND_bytes(ret->ext.tick_aes_key,
2561 sizeof(ret->ext.tick_aes_key)) <= 0))
2562 ret->options |= SSL_OP_NO_TICKET;
2564 #ifndef OPENSSL_NO_SRP
2565 if (!SSL_CTX_SRP_CTX_init(ret))
2568 #ifndef OPENSSL_NO_ENGINE
2569 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2570 # define eng_strx(x) #x
2571 # define eng_str(x) eng_strx(x)
2572 /* Use specific client engine automatically... ignore errors */
2575 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2578 ENGINE_load_builtin_engines();
2579 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2581 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2587 * Default is to connect to non-RI servers. When RI is more widely
2588 * deployed might change this.
2590 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2592 * Disable compression by default to prevent CRIME. Applications can
2593 * re-enable compression by configuring
2594 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2595 * or by using the SSL_CONF library.
2597 ret->options |= SSL_OP_NO_COMPRESSION;
2599 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2603 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2609 int SSL_CTX_up_ref(SSL_CTX *ctx)
2613 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2616 REF_PRINT_COUNT("SSL_CTX", ctx);
2617 REF_ASSERT_ISNT(i < 2);
2618 return ((i > 1) ? 1 : 0);
2621 void SSL_CTX_free(SSL_CTX *a)
2628 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2629 REF_PRINT_COUNT("SSL_CTX", a);
2632 REF_ASSERT_ISNT(i < 0);
2634 X509_VERIFY_PARAM_free(a->param);
2635 dane_ctx_final(&a->dane);
2638 * Free internal session cache. However: the remove_cb() may reference
2639 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2640 * after the sessions were flushed.
2641 * As the ex_data handling routines might also touch the session cache,
2642 * the most secure solution seems to be: empty (flush) the cache, then
2643 * free ex_data, then finally free the cache.
2644 * (See ticket [openssl.org #212].)
2646 if (a->sessions != NULL)
2647 SSL_CTX_flush_sessions(a, 0);
2649 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2650 lh_SSL_SESSION_free(a->sessions);
2651 X509_STORE_free(a->cert_store);
2652 #ifndef OPENSSL_NO_CT
2653 CTLOG_STORE_free(a->ctlog_store);
2655 sk_SSL_CIPHER_free(a->cipher_list);
2656 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2657 ssl_cert_free(a->cert);
2658 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2659 sk_X509_pop_free(a->extra_certs, X509_free);
2660 a->comp_methods = NULL;
2661 #ifndef OPENSSL_NO_SRTP
2662 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2664 #ifndef OPENSSL_NO_SRP
2665 SSL_CTX_SRP_CTX_free(a);
2667 #ifndef OPENSSL_NO_ENGINE
2668 ENGINE_finish(a->client_cert_engine);
2671 #ifndef OPENSSL_NO_EC
2672 OPENSSL_free(a->ext.ecpointformats);
2673 OPENSSL_free(a->ext.supportedgroups);
2675 OPENSSL_free(a->ext.alpn);
2677 CRYPTO_THREAD_lock_free(a->lock);
2682 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2684 ctx->default_passwd_callback = cb;
2687 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2689 ctx->default_passwd_callback_userdata = u;
2692 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2694 return ctx->default_passwd_callback;
2697 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2699 return ctx->default_passwd_callback_userdata;
2702 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2704 s->default_passwd_callback = cb;
2707 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2709 s->default_passwd_callback_userdata = u;
2712 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2714 return s->default_passwd_callback;
2717 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2719 return s->default_passwd_callback_userdata;
2722 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2723 int (*cb) (X509_STORE_CTX *, void *),
2726 ctx->app_verify_callback = cb;
2727 ctx->app_verify_arg = arg;
2730 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2731 int (*cb) (int, X509_STORE_CTX *))
2733 ctx->verify_mode = mode;
2734 ctx->default_verify_callback = cb;
2737 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2739 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2742 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
2744 ssl_cert_set_cert_cb(c->cert, cb, arg);
2747 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2749 ssl_cert_set_cert_cb(s->cert, cb, arg);
2752 void ssl_set_masks(SSL *s)
2755 uint32_t *pvalid = s->s3->tmp.valid_flags;
2756 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2757 unsigned long mask_k, mask_a;
2758 #ifndef OPENSSL_NO_EC
2759 int have_ecc_cert, ecdsa_ok;
2764 #ifndef OPENSSL_NO_DH
2765 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2770 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
2771 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
2772 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
2773 #ifndef OPENSSL_NO_EC
2774 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2780 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2781 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2784 #ifndef OPENSSL_NO_GOST
2785 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
2786 mask_k |= SSL_kGOST;
2787 mask_a |= SSL_aGOST12;
2789 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
2790 mask_k |= SSL_kGOST;
2791 mask_a |= SSL_aGOST12;
2793 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
2794 mask_k |= SSL_kGOST;
2795 mask_a |= SSL_aGOST01;
2805 if (rsa_enc || rsa_sign) {
2813 mask_a |= SSL_aNULL;
2816 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2817 * depending on the key usage extension.
2819 #ifndef OPENSSL_NO_EC
2820 if (have_ecc_cert) {
2822 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
2823 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2824 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2827 mask_a |= SSL_aECDSA;
2831 #ifndef OPENSSL_NO_EC
2832 mask_k |= SSL_kECDHE;
2835 #ifndef OPENSSL_NO_PSK
2838 if (mask_k & SSL_kRSA)
2839 mask_k |= SSL_kRSAPSK;
2840 if (mask_k & SSL_kDHE)
2841 mask_k |= SSL_kDHEPSK;
2842 if (mask_k & SSL_kECDHE)
2843 mask_k |= SSL_kECDHEPSK;
2846 s->s3->tmp.mask_k = mask_k;
2847 s->s3->tmp.mask_a = mask_a;
2850 #ifndef OPENSSL_NO_EC
2852 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2854 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2855 /* key usage, if present, must allow signing */
2856 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2857 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2858 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2862 return 1; /* all checks are ok */
2867 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2868 size_t *serverinfo_length)
2870 CERT_PKEY *cpk = s->s3->tmp.cert;
2871 *serverinfo_length = 0;
2873 if (cpk == NULL || cpk->serverinfo == NULL)
2876 *serverinfo = cpk->serverinfo;
2877 *serverinfo_length = cpk->serverinfo_length;
2881 void ssl_update_cache(SSL *s, int mode)
2886 * If the session_id_length is 0, we are not supposed to cache it, and it
2887 * would be rather hard to do anyway :-)
2889 if (s->session->session_id_length == 0)
2892 i = s->session_ctx->session_cache_mode;
2893 if ((i & mode) && (!s->hit)
2894 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2895 || SSL_CTX_add_session(s->session_ctx, s->session))
2896 && (s->session_ctx->new_session_cb != NULL)) {
2897 SSL_SESSION_up_ref(s->session);
2898 if (!s->session_ctx->new_session_cb(s, s->session))
2899 SSL_SESSION_free(s->session);
2902 /* auto flush every 255 connections */
2903 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2904 if ((((mode & SSL_SESS_CACHE_CLIENT)
2905 ? s->session_ctx->stats.sess_connect_good
2906 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2907 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2912 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2917 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2922 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2926 if (s->method != meth) {
2927 const SSL_METHOD *sm = s->method;
2928 int (*hf) (SSL *) = s->handshake_func;
2930 if (sm->version == meth->version)
2935 ret = s->method->ssl_new(s);
2938 if (hf == sm->ssl_connect)
2939 s->handshake_func = meth->ssl_connect;
2940 else if (hf == sm->ssl_accept)
2941 s->handshake_func = meth->ssl_accept;
2946 int SSL_get_error(const SSL *s, int i)
2953 return (SSL_ERROR_NONE);
2956 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2957 * where we do encode the error
2959 if ((l = ERR_peek_error()) != 0) {
2960 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2961 return (SSL_ERROR_SYSCALL);
2963 return (SSL_ERROR_SSL);
2966 if (SSL_want_read(s)) {
2967 bio = SSL_get_rbio(s);
2968 if (BIO_should_read(bio))
2969 return (SSL_ERROR_WANT_READ);
2970 else if (BIO_should_write(bio))
2972 * This one doesn't make too much sense ... We never try to write
2973 * to the rbio, and an application program where rbio and wbio
2974 * are separate couldn't even know what it should wait for.
2975 * However if we ever set s->rwstate incorrectly (so that we have
2976 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2977 * wbio *are* the same, this test works around that bug; so it
2978 * might be safer to keep it.
2980 return (SSL_ERROR_WANT_WRITE);
2981 else if (BIO_should_io_special(bio)) {
2982 reason = BIO_get_retry_reason(bio);
2983 if (reason == BIO_RR_CONNECT)
2984 return (SSL_ERROR_WANT_CONNECT);
2985 else if (reason == BIO_RR_ACCEPT)
2986 return (SSL_ERROR_WANT_ACCEPT);
2988 return (SSL_ERROR_SYSCALL); /* unknown */
2992 if (SSL_want_write(s)) {
2994 * Access wbio directly - in order to use the buffered bio if
2998 if (BIO_should_write(bio))
2999 return (SSL_ERROR_WANT_WRITE);
3000 else if (BIO_should_read(bio))
3002 * See above (SSL_want_read(s) with BIO_should_write(bio))
3004 return (SSL_ERROR_WANT_READ);
3005 else if (BIO_should_io_special(bio)) {
3006 reason = BIO_get_retry_reason(bio);
3007 if (reason == BIO_RR_CONNECT)
3008 return (SSL_ERROR_WANT_CONNECT);
3009 else if (reason == BIO_RR_ACCEPT)
3010 return (SSL_ERROR_WANT_ACCEPT);
3012 return (SSL_ERROR_SYSCALL);
3015 if (SSL_want_x509_lookup(s)) {
3016 return (SSL_ERROR_WANT_X509_LOOKUP);
3018 if (SSL_want_async(s)) {
3019 return SSL_ERROR_WANT_ASYNC;
3021 if (SSL_want_async_job(s)) {
3022 return SSL_ERROR_WANT_ASYNC_JOB;
3025 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3026 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3027 return (SSL_ERROR_ZERO_RETURN);
3029 return (SSL_ERROR_SYSCALL);
3032 static int ssl_do_handshake_intern(void *vargs)
3034 struct ssl_async_args *args;
3037 args = (struct ssl_async_args *)vargs;
3040 return s->handshake_func(s);
3043 int SSL_do_handshake(SSL *s)
3047 if (s->handshake_func == NULL) {
3048 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3052 s->method->ssl_renegotiate_check(s, 0);
3054 if (SSL_in_init(s) || SSL_in_before(s)) {
3055 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3056 struct ssl_async_args args;
3060 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3062 ret = s->handshake_func(s);
3068 void SSL_set_accept_state(SSL *s)
3072 ossl_statem_clear(s);
3073 s->handshake_func = s->method->ssl_accept;
3077 void SSL_set_connect_state(SSL *s)
3081 ossl_statem_clear(s);
3082 s->handshake_func = s->method->ssl_connect;
3086 int ssl_undefined_function(SSL *s)
3088 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3092 int ssl_undefined_void_function(void)
3094 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3095 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3099 int ssl_undefined_const_function(const SSL *s)
3104 const SSL_METHOD *ssl_bad_method(int ver)
3106 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3110 const char *ssl_protocol_to_string(int version)
3114 case TLS1_3_VERSION:
3117 case TLS1_2_VERSION:
3120 case TLS1_1_VERSION:
3135 case DTLS1_2_VERSION:
3143 const char *SSL_get_version(const SSL *s)
3145 return ssl_protocol_to_string(s->version);
3148 SSL *SSL_dup(SSL *s)
3150 STACK_OF(X509_NAME) *sk;
3155 /* If we're not quiescent, just up_ref! */
3156 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3157 CRYPTO_UP_REF(&s->references, &i, s->lock);
3162 * Otherwise, copy configuration state, and session if set.
3164 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3167 if (s->session != NULL) {
3169 * Arranges to share the same session via up_ref. This "copies"
3170 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3172 if (!SSL_copy_session_id(ret, s))
3176 * No session has been established yet, so we have to expect that
3177 * s->cert or ret->cert will be changed later -- they should not both
3178 * point to the same object, and thus we can't use
3179 * SSL_copy_session_id.
3181 if (!SSL_set_ssl_method(ret, s->method))
3184 if (s->cert != NULL) {
3185 ssl_cert_free(ret->cert);
3186 ret->cert = ssl_cert_dup(s->cert);
3187 if (ret->cert == NULL)
3191 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3192 (int)s->sid_ctx_length))
3196 if (!ssl_dane_dup(ret, s))
3198 ret->version = s->version;
3199 ret->options = s->options;
3200 ret->mode = s->mode;
3201 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3202 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3203 ret->msg_callback = s->msg_callback;
3204 ret->msg_callback_arg = s->msg_callback_arg;
3205 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3206 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3207 ret->generate_session_id = s->generate_session_id;
3209 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3211 /* copy app data, a little dangerous perhaps */
3212 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3215 /* setup rbio, and wbio */
3216 if (s->rbio != NULL) {
3217 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3220 if (s->wbio != NULL) {
3221 if (s->wbio != s->rbio) {
3222 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3225 BIO_up_ref(ret->rbio);
3226 ret->wbio = ret->rbio;
3230 ret->server = s->server;
3231 if (s->handshake_func) {
3233 SSL_set_accept_state(ret);
3235 SSL_set_connect_state(ret);
3237 ret->shutdown = s->shutdown;
3240 ret->default_passwd_callback = s->default_passwd_callback;
3241 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3243 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3245 /* dup the cipher_list and cipher_list_by_id stacks */
3246 if (s->cipher_list != NULL) {
3247 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3250 if (s->cipher_list_by_id != NULL)
3251 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3255 /* Dup the client_CA list */
3256 if (s->client_CA != NULL) {
3257 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3259 ret->client_CA = sk;
3260 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3261 xn = sk_X509_NAME_value(sk, i);
3262 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3275 void ssl_clear_cipher_ctx(SSL *s)
3277 if (s->enc_read_ctx != NULL) {
3278 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3279 s->enc_read_ctx = NULL;
3281 if (s->enc_write_ctx != NULL) {
3282 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3283 s->enc_write_ctx = NULL;
3285 #ifndef OPENSSL_NO_COMP
3286 COMP_CTX_free(s->expand);
3288 COMP_CTX_free(s->compress);
3293 X509 *SSL_get_certificate(const SSL *s)
3295 if (s->cert != NULL)
3296 return (s->cert->key->x509);
3301 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3303 if (s->cert != NULL)
3304 return (s->cert->key->privatekey);
3309 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3311 if (ctx->cert != NULL)
3312 return ctx->cert->key->x509;
3317 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3319 if (ctx->cert != NULL)
3320 return ctx->cert->key->privatekey;
3325 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3327 if ((s->session != NULL) && (s->session->cipher != NULL))
3328 return (s->session->cipher);
3332 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3334 #ifndef OPENSSL_NO_COMP
3335 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3341 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3343 #ifndef OPENSSL_NO_COMP
3344 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3350 int ssl_init_wbio_buffer(SSL *s)
3354 if (s->bbio != NULL) {
3355 /* Already buffered. */
3359 bbio = BIO_new(BIO_f_buffer());
3360 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3362 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3366 s->wbio = BIO_push(bbio, s->wbio);
3371 void ssl_free_wbio_buffer(SSL *s)
3373 /* callers ensure s is never null */
3374 if (s->bbio == NULL)
3377 s->wbio = BIO_pop(s->wbio);
3378 assert(s->wbio != NULL);
3383 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3385 ctx->quiet_shutdown = mode;
3388 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3390 return (ctx->quiet_shutdown);
3393 void SSL_set_quiet_shutdown(SSL *s, int mode)
3395 s->quiet_shutdown = mode;
3398 int SSL_get_quiet_shutdown(const SSL *s)
3400 return (s->quiet_shutdown);
3403 void SSL_set_shutdown(SSL *s, int mode)
3408 int SSL_get_shutdown(const SSL *s)
3413 int SSL_version(const SSL *s)
3418 int SSL_client_version(const SSL *s)
3420 return s->client_version;
3423 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3428 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3431 if (ssl->ctx == ctx)
3434 ctx = ssl->session_ctx;
3435 new_cert = ssl_cert_dup(ctx->cert);
3436 if (new_cert == NULL) {
3439 ssl_cert_free(ssl->cert);
3440 ssl->cert = new_cert;
3443 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3444 * so setter APIs must prevent invalid lengths from entering the system.
3446 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3449 * If the session ID context matches that of the parent SSL_CTX,
3450 * inherit it from the new SSL_CTX as well. If however the context does
3451 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3452 * leave it unchanged.
3454 if ((ssl->ctx != NULL) &&
3455 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3456 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3457 ssl->sid_ctx_length = ctx->sid_ctx_length;
3458 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3461 SSL_CTX_up_ref(ctx);
3462 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3468 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3470 return (X509_STORE_set_default_paths(ctx->cert_store));
3473 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3475 X509_LOOKUP *lookup;
3477 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3480 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3482 /* Clear any errors if the default directory does not exist */
3488 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3490 X509_LOOKUP *lookup;
3492 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3496 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3498 /* Clear any errors if the default file does not exist */
3504 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3507 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3510 void SSL_set_info_callback(SSL *ssl,
3511 void (*cb) (const SSL *ssl, int type, int val))
3513 ssl->info_callback = cb;
3517 * One compiler (Diab DCC) doesn't like argument names in returned function
3520 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3523 return ssl->info_callback;
3526 void SSL_set_verify_result(SSL *ssl, long arg)
3528 ssl->verify_result = arg;
3531 long SSL_get_verify_result(const SSL *ssl)
3533 return (ssl->verify_result);
3536 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3539 return sizeof(ssl->s3->client_random);
3540 if (outlen > sizeof(ssl->s3->client_random))
3541 outlen = sizeof(ssl->s3->client_random);
3542 memcpy(out, ssl->s3->client_random, outlen);
3546 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3549 return sizeof(ssl->s3->server_random);
3550 if (outlen > sizeof(ssl->s3->server_random))
3551 outlen = sizeof(ssl->s3->server_random);
3552 memcpy(out, ssl->s3->server_random, outlen);
3556 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3557 unsigned char *out, size_t outlen)
3560 return session->master_key_length;
3561 if (outlen > session->master_key_length)
3562 outlen = session->master_key_length;
3563 memcpy(out, session->master_key, outlen);
3567 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3569 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3572 void *SSL_get_ex_data(const SSL *s, int idx)
3574 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3577 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3579 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3582 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3584 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3592 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3594 return (ctx->cert_store);
3597 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3599 X509_STORE_free(ctx->cert_store);
3600 ctx->cert_store = store;
3603 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3606 X509_STORE_up_ref(store);
3607 SSL_CTX_set_cert_store(ctx, store);
3610 int SSL_want(const SSL *s)
3612 return (s->rwstate);
3616 * \brief Set the callback for generating temporary DH keys.
3617 * \param ctx the SSL context.
3618 * \param dh the callback
3621 #ifndef OPENSSL_NO_DH
3622 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3623 DH *(*dh) (SSL *ssl, int is_export,
3626 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3629 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3632 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3636 #ifndef OPENSSL_NO_PSK
3637 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3639 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3640 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3643 OPENSSL_free(ctx->cert->psk_identity_hint);
3644 if (identity_hint != NULL) {
3645 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3646 if (ctx->cert->psk_identity_hint == NULL)
3649 ctx->cert->psk_identity_hint = NULL;
3653 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3658 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3659 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3662 OPENSSL_free(s->cert->psk_identity_hint);
3663 if (identity_hint != NULL) {
3664 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3665 if (s->cert->psk_identity_hint == NULL)
3668 s->cert->psk_identity_hint = NULL;
3672 const char *SSL_get_psk_identity_hint(const SSL *s)
3674 if (s == NULL || s->session == NULL)
3676 return (s->session->psk_identity_hint);
3679 const char *SSL_get_psk_identity(const SSL *s)
3681 if (s == NULL || s->session == NULL)
3683 return (s->session->psk_identity);
3686 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
3688 s->psk_client_callback = cb;
3691 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
3693 ctx->psk_client_callback = cb;
3696 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
3698 s->psk_server_callback = cb;
3701 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
3703 ctx->psk_server_callback = cb;
3707 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3708 void (*cb) (int write_p, int version,
3709 int content_type, const void *buf,
3710 size_t len, SSL *ssl, void *arg))
3712 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3715 void SSL_set_msg_callback(SSL *ssl,
3716 void (*cb) (int write_p, int version,
3717 int content_type, const void *buf,
3718 size_t len, SSL *ssl, void *arg))
3720 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3723 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3724 int (*cb) (SSL *ssl,
3728 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3729 (void (*)(void))cb);
3732 void SSL_set_not_resumable_session_callback(SSL *ssl,
3733 int (*cb) (SSL *ssl,
3734 int is_forward_secure))
3736 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3737 (void (*)(void))cb);
3741 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3742 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3743 * If EVP_MD pointer is passed, initializes ctx with this md.
3744 * Returns the newly allocated ctx;
3747 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3749 ssl_clear_hash_ctx(hash);
3750 *hash = EVP_MD_CTX_new();
3751 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3752 EVP_MD_CTX_free(*hash);
3759 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3762 EVP_MD_CTX_free(*hash);
3766 /* Retrieve handshake hashes */
3767 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
3770 EVP_MD_CTX *ctx = NULL;
3771 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3772 int hashleni = EVP_MD_CTX_size(hdgst);
3775 if (hashleni < 0 || (size_t)hashleni > outlen)
3778 ctx = EVP_MD_CTX_new();
3782 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3783 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3786 *hashlen = hashleni;
3790 EVP_MD_CTX_free(ctx);
3794 int SSL_session_reused(SSL *s)
3799 int SSL_is_server(SSL *s)
3804 #if OPENSSL_API_COMPAT < 0x10100000L
3805 void SSL_set_debug(SSL *s, int debug)
3807 /* Old function was do-nothing anyway... */
3813 void SSL_set_security_level(SSL *s, int level)
3815 s->cert->sec_level = level;
3818 int SSL_get_security_level(const SSL *s)
3820 return s->cert->sec_level;
3823 void SSL_set_security_callback(SSL *s,
3824 int (*cb) (const SSL *s, const SSL_CTX *ctx,
3825 int op, int bits, int nid,
3826 void *other, void *ex))
3828 s->cert->sec_cb = cb;
3831 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
3832 const SSL_CTX *ctx, int op,
3833 int bits, int nid, void *other,
3835 return s->cert->sec_cb;
3838 void SSL_set0_security_ex_data(SSL *s, void *ex)
3840 s->cert->sec_ex = ex;
3843 void *SSL_get0_security_ex_data(const SSL *s)
3845 return s->cert->sec_ex;
3848 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3850 ctx->cert->sec_level = level;
3853 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3855 return ctx->cert->sec_level;
3858 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3859 int (*cb) (const SSL *s, const SSL_CTX *ctx,
3860 int op, int bits, int nid,
3861 void *other, void *ex))
3863 ctx->cert->sec_cb = cb;
3866 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3872 return ctx->cert->sec_cb;
3875 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3877 ctx->cert->sec_ex = ex;
3880 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3882 return ctx->cert->sec_ex;
3886 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3887 * can return unsigned long, instead of the generic long return value from the
3888 * control interface.
3890 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3892 return ctx->options;
3895 unsigned long SSL_get_options(const SSL *s)
3900 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3902 return ctx->options |= op;
3905 unsigned long SSL_set_options(SSL *s, unsigned long op)
3907 return s->options |= op;
3910 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3912 return ctx->options &= ~op;
3915 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3917 return s->options &= ~op;
3920 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3922 return s->verified_chain;
3925 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3927 #ifndef OPENSSL_NO_CT
3930 * Moves SCTs from the |src| stack to the |dst| stack.
3931 * The source of each SCT will be set to |origin|.
3932 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3934 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3936 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
3937 sct_source_t origin)
3943 *dst = sk_SCT_new_null();
3945 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3950 while ((sct = sk_SCT_pop(src)) != NULL) {
3951 if (SCT_set_source(sct, origin) != 1)
3954 if (sk_SCT_push(*dst, sct) <= 0)
3962 sk_SCT_push(src, sct); /* Put the SCT back */
3967 * Look for data collected during ServerHello and parse if found.
3968 * Returns the number of SCTs extracted.
3970 static int ct_extract_tls_extension_scts(SSL *s)
3972 int scts_extracted = 0;
3974 if (s->ext.scts != NULL) {
3975 const unsigned char *p = s->ext.scts;
3976 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
3978 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3980 SCT_LIST_free(scts);
3983 return scts_extracted;
3987 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3988 * contains an SCT X509 extension. They will be stored in |s->scts|.
3990 * - The number of SCTs extracted, assuming an OCSP response exists.
3991 * - 0 if no OCSP response exists or it contains no SCTs.
3992 * - A negative integer if an error occurs.
3994 static int ct_extract_ocsp_response_scts(SSL *s)
3996 # ifndef OPENSSL_NO_OCSP
3997 int scts_extracted = 0;
3998 const unsigned char *p;
3999 OCSP_BASICRESP *br = NULL;
4000 OCSP_RESPONSE *rsp = NULL;
4001 STACK_OF(SCT) *scts = NULL;
4004 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4007 p = s->ext.ocsp.resp;
4008 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4012 br = OCSP_response_get1_basic(rsp);
4016 for (i = 0; i < OCSP_resp_count(br); ++i) {
4017 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4023 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4025 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4026 if (scts_extracted < 0)
4030 SCT_LIST_free(scts);
4031 OCSP_BASICRESP_free(br);
4032 OCSP_RESPONSE_free(rsp);
4033 return scts_extracted;
4035 /* Behave as if no OCSP response exists */
4041 * Attempts to extract SCTs from the peer certificate.
4042 * Return the number of SCTs extracted, or a negative integer if an error
4045 static int ct_extract_x509v3_extension_scts(SSL *s)
4047 int scts_extracted = 0;
4048 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4051 STACK_OF(SCT) *scts =
4052 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4055 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4057 SCT_LIST_free(scts);
4060 return scts_extracted;
4064 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4065 * response (if it exists) and X509v3 extensions in the certificate.
4066 * Returns NULL if an error occurs.
4068 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4070 if (!s->scts_parsed) {
4071 if (ct_extract_tls_extension_scts(s) < 0 ||
4072 ct_extract_ocsp_response_scts(s) < 0 ||
4073 ct_extract_x509v3_extension_scts(s) < 0)
4083 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4084 const STACK_OF(SCT) *scts, void *unused_arg)
4089 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4090 const STACK_OF(SCT) *scts, void *unused_arg)
4092 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4095 for (i = 0; i < count; ++i) {
4096 SCT *sct = sk_SCT_value(scts, i);
4097 int status = SCT_get_validation_status(sct);
4099 if (status == SCT_VALIDATION_STATUS_VALID)
4102 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4106 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4110 * Since code exists that uses the custom extension handler for CT, look
4111 * for this and throw an error if they have already registered to use CT.
4113 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4114 TLSEXT_TYPE_signed_certificate_timestamp))
4116 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4117 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4121 if (callback != NULL) {
4123 * If we are validating CT, then we MUST accept SCTs served via OCSP
4125 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4129 s->ct_validation_callback = callback;
4130 s->ct_validation_callback_arg = arg;
4135 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4136 ssl_ct_validation_cb callback, void *arg)
4139 * Since code exists that uses the custom extension handler for CT, look for
4140 * this and throw an error if they have already registered to use CT.
4142 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4143 TLSEXT_TYPE_signed_certificate_timestamp))
4145 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4146 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4150 ctx->ct_validation_callback = callback;
4151 ctx->ct_validation_callback_arg = arg;
4155 int SSL_ct_is_enabled(const SSL *s)
4157 return s->ct_validation_callback != NULL;
4160 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4162 return ctx->ct_validation_callback != NULL;
4165 int ssl_validate_ct(SSL *s)
4168 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4170 SSL_DANE *dane = &s->dane;
4171 CT_POLICY_EVAL_CTX *ctx = NULL;
4172 const STACK_OF(SCT) *scts;
4175 * If no callback is set, the peer is anonymous, or its chain is invalid,
4176 * skip SCT validation - just return success. Applications that continue
4177 * handshakes without certificates, with unverified chains, or pinned leaf
4178 * certificates are outside the scope of the WebPKI and CT.
4180 * The above exclusions notwithstanding the vast majority of peers will
4181 * have rather ordinary certificate chains validated by typical
4182 * applications that perform certificate verification and therefore will
4183 * process SCTs when enabled.
4185 if (s->ct_validation_callback == NULL || cert == NULL ||
4186 s->verify_result != X509_V_OK ||
4187 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4191 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4192 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4194 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4195 switch (dane->mtlsa->usage) {
4196 case DANETLS_USAGE_DANE_TA:
4197 case DANETLS_USAGE_DANE_EE:
4202 ctx = CT_POLICY_EVAL_CTX_new();
4204 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4208 issuer = sk_X509_value(s->verified_chain, 1);
4209 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4210 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4211 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4212 CT_POLICY_EVAL_CTX_set_time(ctx, SSL_SESSION_get_time(SSL_get0_session(s)));
4214 scts = SSL_get0_peer_scts(s);
4217 * This function returns success (> 0) only when all the SCTs are valid, 0
4218 * when some are invalid, and < 0 on various internal errors (out of
4219 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4220 * reason to abort the handshake, that decision is up to the callback.
4221 * Therefore, we error out only in the unexpected case that the return
4222 * value is negative.
4224 * XXX: One might well argue that the return value of this function is an
4225 * unfortunate design choice. Its job is only to determine the validation
4226 * status of each of the provided SCTs. So long as it correctly separates
4227 * the wheat from the chaff it should return success. Failure in this case
4228 * ought to correspond to an inability to carry out its duties.
4230 if (SCT_LIST_validate(scts, ctx) < 0) {
4231 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4235 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4237 ret = 0; /* This function returns 0 on failure */
4240 CT_POLICY_EVAL_CTX_free(ctx);
4242 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4243 * failure return code here. Also the application may wish the complete
4244 * the handshake, and then disconnect cleanly at a higher layer, after
4245 * checking the verification status of the completed connection.
4247 * We therefore force a certificate verification failure which will be
4248 * visible via SSL_get_verify_result() and cached as part of any resumed
4251 * Note: the permissive callback is for information gathering only, always
4252 * returns success, and does not affect verification status. Only the
4253 * strict callback or a custom application-specified callback can trigger
4254 * connection failure or record a verification error.
4257 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4261 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4263 switch (validation_mode) {
4265 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4267 case SSL_CT_VALIDATION_PERMISSIVE:
4268 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4269 case SSL_CT_VALIDATION_STRICT:
4270 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4274 int SSL_enable_ct(SSL *s, int validation_mode)
4276 switch (validation_mode) {
4278 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4280 case SSL_CT_VALIDATION_PERMISSIVE:
4281 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4282 case SSL_CT_VALIDATION_STRICT:
4283 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4287 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4289 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4292 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4294 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4297 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4299 CTLOG_STORE_free(ctx->ctlog_store);
4300 ctx->ctlog_store = logs;
4303 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4305 return ctx->ctlog_store;
4310 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4312 ctx->keylog_callback = cb;
4315 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4317 return ctx->keylog_callback;
4320 static int nss_keylog_int(const char *prefix,
4322 const uint8_t *parameter_1,
4323 size_t parameter_1_len,
4324 const uint8_t *parameter_2,
4325 size_t parameter_2_len)
4328 char *cursor = NULL;
4333 if (ssl->ctx->keylog_callback == NULL) return 1;
4336 * Our output buffer will contain the following strings, rendered with
4337 * space characters in between, terminated by a NULL character: first the
4338 * prefix, then the first parameter, then the second parameter. The
4339 * meaning of each parameter depends on the specific key material being
4340 * logged. Note that the first and second parameters are encoded in
4341 * hexadecimal, so we need a buffer that is twice their lengths.
4343 prefix_len = strlen(prefix);
4344 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4345 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4346 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4350 strcpy(cursor, prefix);
4351 cursor += prefix_len;
4354 for (i = 0; i < parameter_1_len; i++) {
4355 sprintf(cursor, "%02x", parameter_1[i]);
4360 for (i = 0; i < parameter_2_len; i++) {
4361 sprintf(cursor, "%02x", parameter_2[i]);
4366 ssl->ctx->keylog_callback(ssl, (const char *)out);
4372 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4373 const uint8_t *encrypted_premaster,
4374 size_t encrypted_premaster_len,
4375 const uint8_t *premaster,
4376 size_t premaster_len)
4378 if (encrypted_premaster_len < 8) {
4379 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4383 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4384 return nss_keylog_int("RSA",
4386 encrypted_premaster,
4392 int ssl_log_secret(SSL *ssl,
4394 const uint8_t *secret,
4397 return nss_keylog_int(label,
4399 ssl->s3->client_random,