2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/x509v3.h>
16 #include <openssl/rand.h>
17 #include <openssl/ocsp.h>
18 #include <openssl/dh.h>
19 #include <openssl/engine.h>
20 #include <openssl/async.h>
21 #include <openssl/ct.h>
22 #include "internal/cryptlib.h"
23 #include "internal/rand.h"
24 #include "internal/refcount.h"
26 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
28 SSL3_ENC_METHOD ssl3_undef_enc_method = {
30 * evil casts, but these functions are only called if there's a library
33 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
34 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
35 ssl_undefined_function,
36 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
37 ssl_undefined_function,
38 (int (*)(SSL *, int))ssl_undefined_function,
39 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
40 ssl_undefined_function,
41 NULL, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function,
46 (int (*)(SSL *, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context))ssl_undefined_function,
51 struct ssl_async_args {
55 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
57 int (*func_read) (SSL *, void *, size_t, size_t *);
58 int (*func_write) (SSL *, const void *, size_t, size_t *);
59 int (*func_other) (SSL *);
69 DANETLS_MATCHING_FULL, 0, NID_undef
72 DANETLS_MATCHING_2256, 1, NID_sha256
75 DANETLS_MATCHING_2512, 2, NID_sha512
79 static int dane_ctx_enable(struct dane_ctx_st *dctx)
83 uint8_t mdmax = DANETLS_MATCHING_LAST;
84 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
87 if (dctx->mdevp != NULL)
90 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
91 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
93 if (mdord == NULL || mdevp == NULL) {
96 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
100 /* Install default entries */
101 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
104 if (dane_mds[i].nid == NID_undef ||
105 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
107 mdevp[dane_mds[i].mtype] = md;
108 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
118 static void dane_ctx_final(struct dane_ctx_st *dctx)
120 OPENSSL_free(dctx->mdevp);
123 OPENSSL_free(dctx->mdord);
128 static void tlsa_free(danetls_record *t)
132 OPENSSL_free(t->data);
133 EVP_PKEY_free(t->spki);
137 static void dane_final(SSL_DANE *dane)
139 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
142 sk_X509_pop_free(dane->certs, X509_free);
145 X509_free(dane->mcert);
153 * dane_copy - Copy dane configuration, sans verification state.
155 static int ssl_dane_dup(SSL *to, SSL *from)
160 if (!DANETLS_ENABLED(&from->dane))
163 num = sk_danetls_record_num(from->dane.trecs);
164 dane_final(&to->dane);
165 to->dane.flags = from->dane.flags;
166 to->dane.dctx = &to->ctx->dane;
167 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
169 if (to->dane.trecs == NULL) {
170 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
174 for (i = 0; i < num; ++i) {
175 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
177 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
178 t->data, t->dlen) <= 0)
184 static int dane_mtype_set(struct dane_ctx_st *dctx,
185 const EVP_MD *md, uint8_t mtype, uint8_t ord)
189 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
190 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
194 if (mtype > dctx->mdmax) {
195 const EVP_MD **mdevp;
197 int n = ((int)mtype) + 1;
199 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
201 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
206 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
208 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
213 /* Zero-fill any gaps */
214 for (i = dctx->mdmax + 1; i < mtype; ++i) {
222 dctx->mdevp[mtype] = md;
223 /* Coerce ordinal of disabled matching types to 0 */
224 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
229 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
231 if (mtype > dane->dctx->mdmax)
233 return dane->dctx->mdevp[mtype];
236 static int dane_tlsa_add(SSL_DANE *dane,
239 uint8_t mtype, unsigned char *data, size_t dlen)
242 const EVP_MD *md = NULL;
243 int ilen = (int)dlen;
247 if (dane->trecs == NULL) {
248 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
252 if (ilen < 0 || dlen != (size_t)ilen) {
253 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
257 if (usage > DANETLS_USAGE_LAST) {
258 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
262 if (selector > DANETLS_SELECTOR_LAST) {
263 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
267 if (mtype != DANETLS_MATCHING_FULL) {
268 md = tlsa_md_get(dane, mtype);
270 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
275 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
276 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
280 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
284 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
285 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
290 t->selector = selector;
292 t->data = OPENSSL_malloc(dlen);
293 if (t->data == NULL) {
295 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
298 memcpy(t->data, data, dlen);
301 /* Validate and cache full certificate or public key */
302 if (mtype == DANETLS_MATCHING_FULL) {
303 const unsigned char *p = data;
305 EVP_PKEY *pkey = NULL;
308 case DANETLS_SELECTOR_CERT:
309 if (!d2i_X509(&cert, &p, ilen) || p < data ||
310 dlen != (size_t)(p - data)) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
315 if (X509_get0_pubkey(cert) == NULL) {
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
321 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
327 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
328 * records that contain full certificates of trust-anchors that are
329 * not present in the wire chain. For usage PKIX-TA(0), we augment
330 * the chain with untrusted Full(0) certificates from DNS, in case
331 * they are missing from the chain.
333 if ((dane->certs == NULL &&
334 (dane->certs = sk_X509_new_null()) == NULL) ||
335 !sk_X509_push(dane->certs, cert)) {
336 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
343 case DANETLS_SELECTOR_SPKI:
344 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
345 dlen != (size_t)(p - data)) {
347 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
352 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
353 * records that contain full bare keys of trust-anchors that are
354 * not present in the wire chain.
356 if (usage == DANETLS_USAGE_DANE_TA)
365 * Find the right insertion point for the new record.
367 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
368 * they can be processed first, as they require no chain building, and no
369 * expiration or hostname checks. Because DANE-EE(3) is numerically
370 * largest, this is accomplished via descending sort by "usage".
372 * We also sort in descending order by matching ordinal to simplify
373 * the implementation of digest agility in the verification code.
375 * The choice of order for the selector is not significant, so we
376 * use the same descending order for consistency.
378 num = sk_danetls_record_num(dane->trecs);
379 for (i = 0; i < num; ++i) {
380 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
382 if (rec->usage > usage)
384 if (rec->usage < usage)
386 if (rec->selector > selector)
388 if (rec->selector < selector)
390 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
395 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
397 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
400 dane->umask |= DANETLS_USAGE_BIT(usage);
406 * Return 0 if there is only one version configured and it was disabled
407 * at configure time. Return 1 otherwise.
409 static int ssl_check_allowed_versions(int min_version, int max_version)
411 int minisdtls = 0, maxisdtls = 0;
413 /* Figure out if we're doing DTLS versions or TLS versions */
414 if (min_version == DTLS1_BAD_VER
415 || min_version >> 8 == DTLS1_VERSION_MAJOR)
417 if (max_version == DTLS1_BAD_VER
418 || max_version >> 8 == DTLS1_VERSION_MAJOR)
420 /* A wildcard version of 0 could be DTLS or TLS. */
421 if ((minisdtls && !maxisdtls && max_version != 0)
422 || (maxisdtls && !minisdtls && min_version != 0)) {
423 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
427 if (minisdtls || maxisdtls) {
428 /* Do DTLS version checks. */
429 if (min_version == 0)
430 /* Ignore DTLS1_BAD_VER */
431 min_version = DTLS1_VERSION;
432 if (max_version == 0)
433 max_version = DTLS1_2_VERSION;
434 #ifdef OPENSSL_NO_DTLS1_2
435 if (max_version == DTLS1_2_VERSION)
436 max_version = DTLS1_VERSION;
438 #ifdef OPENSSL_NO_DTLS1
439 if (min_version == DTLS1_VERSION)
440 min_version = DTLS1_2_VERSION;
442 /* Done massaging versions; do the check. */
444 #ifdef OPENSSL_NO_DTLS1
445 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
446 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
448 #ifdef OPENSSL_NO_DTLS1_2
449 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
450 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
455 /* Regular TLS version checks. */
456 if (min_version == 0)
457 min_version = SSL3_VERSION;
458 if (max_version == 0)
459 max_version = TLS1_3_VERSION;
460 #ifdef OPENSSL_NO_TLS1_3
461 if (max_version == TLS1_3_VERSION)
462 max_version = TLS1_2_VERSION;
464 #ifdef OPENSSL_NO_TLS1_2
465 if (max_version == TLS1_2_VERSION)
466 max_version = TLS1_1_VERSION;
468 #ifdef OPENSSL_NO_TLS1_1
469 if (max_version == TLS1_1_VERSION)
470 max_version = TLS1_VERSION;
472 #ifdef OPENSSL_NO_TLS1
473 if (max_version == TLS1_VERSION)
474 max_version = SSL3_VERSION;
476 #ifdef OPENSSL_NO_SSL3
477 if (min_version == SSL3_VERSION)
478 min_version = TLS1_VERSION;
480 #ifdef OPENSSL_NO_TLS1
481 if (min_version == TLS1_VERSION)
482 min_version = TLS1_1_VERSION;
484 #ifdef OPENSSL_NO_TLS1_1
485 if (min_version == TLS1_1_VERSION)
486 min_version = TLS1_2_VERSION;
488 #ifdef OPENSSL_NO_TLS1_2
489 if (min_version == TLS1_2_VERSION)
490 min_version = TLS1_3_VERSION;
492 /* Done massaging versions; do the check. */
494 #ifdef OPENSSL_NO_SSL3
495 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
497 #ifdef OPENSSL_NO_TLS1
498 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
500 #ifdef OPENSSL_NO_TLS1_1
501 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
503 #ifdef OPENSSL_NO_TLS1_2
504 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
506 #ifdef OPENSSL_NO_TLS1_3
507 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
515 static void clear_ciphers(SSL *s)
517 /* clear the current cipher */
518 ssl_clear_cipher_ctx(s);
519 ssl_clear_hash_ctx(&s->read_hash);
520 ssl_clear_hash_ctx(&s->write_hash);
523 int SSL_clear(SSL *s)
525 if (s->method == NULL) {
526 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
530 if (ssl_clear_bad_session(s)) {
531 SSL_SESSION_free(s->session);
534 SSL_SESSION_free(s->psksession);
535 s->psksession = NULL;
536 OPENSSL_free(s->psksession_id);
537 s->psksession_id = NULL;
538 s->psksession_id_len = 0;
544 if (s->renegotiate) {
545 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
549 ossl_statem_clear(s);
551 s->version = s->method->version;
552 s->client_version = s->version;
553 s->rwstate = SSL_NOTHING;
555 BUF_MEM_free(s->init_buf);
560 s->key_update = SSL_KEY_UPDATE_NONE;
562 /* Reset DANE verification result state */
565 X509_free(s->dane.mcert);
566 s->dane.mcert = NULL;
567 s->dane.mtlsa = NULL;
569 /* Clear the verification result peername */
570 X509_VERIFY_PARAM_move_peername(s->param, NULL);
573 * Check to see if we were changed into a different method, if so, revert
576 if (s->method != s->ctx->method) {
577 s->method->ssl_free(s);
578 s->method = s->ctx->method;
579 if (!s->method->ssl_new(s))
582 if (!s->method->ssl_clear(s))
586 RECORD_LAYER_clear(&s->rlayer);
591 /** Used to change an SSL_CTXs default SSL method type */
592 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
594 STACK_OF(SSL_CIPHER) *sk;
598 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
599 &(ctx->cipher_list_by_id),
600 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
601 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
602 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
608 SSL *SSL_new(SSL_CTX *ctx)
613 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
616 if (ctx->method == NULL) {
617 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
621 s = OPENSSL_zalloc(sizeof(*s));
626 s->lock = CRYPTO_THREAD_lock_new();
627 if (s->lock == NULL) {
634 * If not using the standard RAND (say for fuzzing), then don't use a
637 if (RAND_get_rand_method() == RAND_OpenSSL()) {
639 RAND_DRBG_new(RAND_DRBG_NID, RAND_DRBG_FLAG_CTR_USE_DF,
640 RAND_DRBG_get0_global());
642 || RAND_DRBG_instantiate(s->drbg,
643 (const unsigned char *) SSL_version_str,
644 sizeof(SSL_version_str) - 1) == 0)
648 RECORD_LAYER_init(&s->rlayer, s);
650 s->options = ctx->options;
651 s->dane.flags = ctx->dane.flags;
652 s->min_proto_version = ctx->min_proto_version;
653 s->max_proto_version = ctx->max_proto_version;
655 s->max_cert_list = ctx->max_cert_list;
656 s->max_early_data = ctx->max_early_data;
659 * Earlier library versions used to copy the pointer to the CERT, not
660 * its contents; only when setting new parameters for the per-SSL
661 * copy, ssl_cert_new would be called (and the direct reference to
662 * the per-SSL_CTX settings would be lost, but those still were
663 * indirectly accessed for various purposes, and for that reason they
664 * used to be known as s->ctx->default_cert). Now we don't look at the
665 * SSL_CTX's CERT after having duplicated it once.
667 s->cert = ssl_cert_dup(ctx->cert);
671 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
672 s->msg_callback = ctx->msg_callback;
673 s->msg_callback_arg = ctx->msg_callback_arg;
674 s->verify_mode = ctx->verify_mode;
675 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
676 s->record_padding_cb = ctx->record_padding_cb;
677 s->record_padding_arg = ctx->record_padding_arg;
678 s->block_padding = ctx->block_padding;
679 s->sid_ctx_length = ctx->sid_ctx_length;
680 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
682 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
683 s->verify_callback = ctx->default_verify_callback;
684 s->generate_session_id = ctx->generate_session_id;
686 s->param = X509_VERIFY_PARAM_new();
687 if (s->param == NULL)
689 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
690 s->quiet_shutdown = ctx->quiet_shutdown;
691 s->max_send_fragment = ctx->max_send_fragment;
692 s->split_send_fragment = ctx->split_send_fragment;
693 s->max_pipelines = ctx->max_pipelines;
694 if (s->max_pipelines > 1)
695 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
696 if (ctx->default_read_buf_len > 0)
697 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
702 s->ext.debug_arg = NULL;
703 s->ext.ticket_expected = 0;
704 s->ext.status_type = ctx->ext.status_type;
705 s->ext.status_expected = 0;
706 s->ext.ocsp.ids = NULL;
707 s->ext.ocsp.exts = NULL;
708 s->ext.ocsp.resp = NULL;
709 s->ext.ocsp.resp_len = 0;
711 s->session_ctx = ctx;
712 #ifndef OPENSSL_NO_EC
713 if (ctx->ext.ecpointformats) {
714 s->ext.ecpointformats =
715 OPENSSL_memdup(ctx->ext.ecpointformats,
716 ctx->ext.ecpointformats_len);
717 if (!s->ext.ecpointformats)
719 s->ext.ecpointformats_len =
720 ctx->ext.ecpointformats_len;
722 if (ctx->ext.supportedgroups) {
723 s->ext.supportedgroups =
724 OPENSSL_memdup(ctx->ext.supportedgroups,
725 ctx->ext.supportedgroups_len
726 * sizeof(*ctx->ext.supportedgroups));
727 if (!s->ext.supportedgroups)
729 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
732 #ifndef OPENSSL_NO_NEXTPROTONEG
736 if (s->ctx->ext.alpn) {
737 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
738 if (s->ext.alpn == NULL)
740 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
741 s->ext.alpn_len = s->ctx->ext.alpn_len;
744 s->verified_chain = NULL;
745 s->verify_result = X509_V_OK;
747 s->default_passwd_callback = ctx->default_passwd_callback;
748 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
750 s->method = ctx->method;
752 s->key_update = SSL_KEY_UPDATE_NONE;
754 if (!s->method->ssl_new(s))
757 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
762 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
765 #ifndef OPENSSL_NO_PSK
766 s->psk_client_callback = ctx->psk_client_callback;
767 s->psk_server_callback = ctx->psk_server_callback;
769 s->psk_find_session_cb = ctx->psk_find_session_cb;
770 s->psk_use_session_cb = ctx->psk_use_session_cb;
774 #ifndef OPENSSL_NO_CT
775 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
776 ctx->ct_validation_callback_arg))
783 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
787 int SSL_is_dtls(const SSL *s)
789 return SSL_IS_DTLS(s) ? 1 : 0;
792 int SSL_up_ref(SSL *s)
796 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
799 REF_PRINT_COUNT("SSL", s);
800 REF_ASSERT_ISNT(i < 2);
801 return ((i > 1) ? 1 : 0);
804 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
805 unsigned int sid_ctx_len)
807 if (sid_ctx_len > sizeof ctx->sid_ctx) {
808 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
809 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
812 ctx->sid_ctx_length = sid_ctx_len;
813 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
818 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
819 unsigned int sid_ctx_len)
821 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
822 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
823 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
826 ssl->sid_ctx_length = sid_ctx_len;
827 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
832 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
834 CRYPTO_THREAD_write_lock(ctx->lock);
835 ctx->generate_session_id = cb;
836 CRYPTO_THREAD_unlock(ctx->lock);
840 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
842 CRYPTO_THREAD_write_lock(ssl->lock);
843 ssl->generate_session_id = cb;
844 CRYPTO_THREAD_unlock(ssl->lock);
848 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
852 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
853 * we can "construct" a session to give us the desired check - i.e. to
854 * find if there's a session in the hash table that would conflict with
855 * any new session built out of this id/id_len and the ssl_version in use
860 if (id_len > sizeof r.session_id)
863 r.ssl_version = ssl->version;
864 r.session_id_length = id_len;
865 memcpy(r.session_id, id, id_len);
867 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
868 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
869 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
873 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
875 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
878 int SSL_set_purpose(SSL *s, int purpose)
880 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
883 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
885 return X509_VERIFY_PARAM_set_trust(s->param, trust);
888 int SSL_set_trust(SSL *s, int trust)
890 return X509_VERIFY_PARAM_set_trust(s->param, trust);
893 int SSL_set1_host(SSL *s, const char *hostname)
895 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
898 int SSL_add1_host(SSL *s, const char *hostname)
900 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
903 void SSL_set_hostflags(SSL *s, unsigned int flags)
905 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
908 const char *SSL_get0_peername(SSL *s)
910 return X509_VERIFY_PARAM_get0_peername(s->param);
913 int SSL_CTX_dane_enable(SSL_CTX *ctx)
915 return dane_ctx_enable(&ctx->dane);
918 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
920 unsigned long orig = ctx->dane.flags;
922 ctx->dane.flags |= flags;
926 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
928 unsigned long orig = ctx->dane.flags;
930 ctx->dane.flags &= ~flags;
934 int SSL_dane_enable(SSL *s, const char *basedomain)
936 SSL_DANE *dane = &s->dane;
938 if (s->ctx->dane.mdmax == 0) {
939 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
942 if (dane->trecs != NULL) {
943 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
948 * Default SNI name. This rejects empty names, while set1_host below
949 * accepts them and disables host name checks. To avoid side-effects with
950 * invalid input, set the SNI name first.
952 if (s->ext.hostname == NULL) {
953 if (!SSL_set_tlsext_host_name(s, basedomain)) {
954 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
959 /* Primary RFC6125 reference identifier */
960 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
961 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
967 dane->dctx = &s->ctx->dane;
968 dane->trecs = sk_danetls_record_new_null();
970 if (dane->trecs == NULL) {
971 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
977 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
979 unsigned long orig = ssl->dane.flags;
981 ssl->dane.flags |= flags;
985 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
987 unsigned long orig = ssl->dane.flags;
989 ssl->dane.flags &= ~flags;
993 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
995 SSL_DANE *dane = &s->dane;
997 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1001 *mcert = dane->mcert;
1003 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1008 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1009 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1011 SSL_DANE *dane = &s->dane;
1013 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1017 *usage = dane->mtlsa->usage;
1019 *selector = dane->mtlsa->selector;
1021 *mtype = dane->mtlsa->mtype;
1023 *data = dane->mtlsa->data;
1025 *dlen = dane->mtlsa->dlen;
1030 SSL_DANE *SSL_get0_dane(SSL *s)
1035 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1036 uint8_t mtype, unsigned char *data, size_t dlen)
1038 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1041 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1044 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1047 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1049 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1052 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1054 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1057 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1062 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1067 void SSL_certs_clear(SSL *s)
1069 ssl_cert_clear_certs(s->cert);
1072 void SSL_free(SSL *s)
1079 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1080 REF_PRINT_COUNT("SSL", s);
1083 REF_ASSERT_ISNT(i < 0);
1085 X509_VERIFY_PARAM_free(s->param);
1086 dane_final(&s->dane);
1087 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1089 /* Ignore return value */
1090 ssl_free_wbio_buffer(s);
1092 BIO_free_all(s->wbio);
1093 BIO_free_all(s->rbio);
1095 BUF_MEM_free(s->init_buf);
1097 /* add extra stuff */
1098 sk_SSL_CIPHER_free(s->cipher_list);
1099 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1101 /* Make the next call work :-) */
1102 if (s->session != NULL) {
1103 ssl_clear_bad_session(s);
1104 SSL_SESSION_free(s->session);
1106 SSL_SESSION_free(s->psksession);
1107 OPENSSL_free(s->psksession_id);
1111 ssl_cert_free(s->cert);
1112 /* Free up if allocated */
1114 OPENSSL_free(s->ext.hostname);
1115 SSL_CTX_free(s->session_ctx);
1116 #ifndef OPENSSL_NO_EC
1117 OPENSSL_free(s->ext.ecpointformats);
1118 OPENSSL_free(s->ext.supportedgroups);
1119 #endif /* OPENSSL_NO_EC */
1120 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1121 #ifndef OPENSSL_NO_OCSP
1122 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1124 #ifndef OPENSSL_NO_CT
1125 SCT_LIST_free(s->scts);
1126 OPENSSL_free(s->ext.scts);
1128 OPENSSL_free(s->ext.ocsp.resp);
1129 OPENSSL_free(s->ext.alpn);
1130 OPENSSL_free(s->ext.tls13_cookie);
1131 OPENSSL_free(s->clienthello);
1133 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1135 sk_X509_pop_free(s->verified_chain, X509_free);
1137 if (s->method != NULL)
1138 s->method->ssl_free(s);
1140 RECORD_LAYER_release(&s->rlayer);
1142 SSL_CTX_free(s->ctx);
1144 ASYNC_WAIT_CTX_free(s->waitctx);
1146 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1147 OPENSSL_free(s->ext.npn);
1150 #ifndef OPENSSL_NO_SRTP
1151 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1154 RAND_DRBG_free(s->drbg);
1155 CRYPTO_THREAD_lock_free(s->lock);
1160 void SSL_set0_rbio(SSL *s, BIO *rbio)
1162 BIO_free_all(s->rbio);
1166 void SSL_set0_wbio(SSL *s, BIO *wbio)
1169 * If the output buffering BIO is still in place, remove it
1171 if (s->bbio != NULL)
1172 s->wbio = BIO_pop(s->wbio);
1174 BIO_free_all(s->wbio);
1177 /* Re-attach |bbio| to the new |wbio|. */
1178 if (s->bbio != NULL)
1179 s->wbio = BIO_push(s->bbio, s->wbio);
1182 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1185 * For historical reasons, this function has many different cases in
1186 * ownership handling.
1189 /* If nothing has changed, do nothing */
1190 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1194 * If the two arguments are equal then one fewer reference is granted by the
1195 * caller than we want to take
1197 if (rbio != NULL && rbio == wbio)
1201 * If only the wbio is changed only adopt one reference.
1203 if (rbio == SSL_get_rbio(s)) {
1204 SSL_set0_wbio(s, wbio);
1208 * There is an asymmetry here for historical reasons. If only the rbio is
1209 * changed AND the rbio and wbio were originally different, then we only
1210 * adopt one reference.
1212 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1213 SSL_set0_rbio(s, rbio);
1217 /* Otherwise, adopt both references. */
1218 SSL_set0_rbio(s, rbio);
1219 SSL_set0_wbio(s, wbio);
1222 BIO *SSL_get_rbio(const SSL *s)
1227 BIO *SSL_get_wbio(const SSL *s)
1229 if (s->bbio != NULL) {
1231 * If |bbio| is active, the true caller-configured BIO is its
1234 return BIO_next(s->bbio);
1239 int SSL_get_fd(const SSL *s)
1241 return SSL_get_rfd(s);
1244 int SSL_get_rfd(const SSL *s)
1249 b = SSL_get_rbio(s);
1250 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1252 BIO_get_fd(r, &ret);
1256 int SSL_get_wfd(const SSL *s)
1261 b = SSL_get_wbio(s);
1262 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1264 BIO_get_fd(r, &ret);
1268 #ifndef OPENSSL_NO_SOCK
1269 int SSL_set_fd(SSL *s, int fd)
1274 bio = BIO_new(BIO_s_socket());
1277 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1280 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1281 SSL_set_bio(s, bio, bio);
1287 int SSL_set_wfd(SSL *s, int fd)
1289 BIO *rbio = SSL_get_rbio(s);
1291 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1292 || (int)BIO_get_fd(rbio, NULL) != fd) {
1293 BIO *bio = BIO_new(BIO_s_socket());
1296 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1299 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1300 SSL_set0_wbio(s, bio);
1303 SSL_set0_wbio(s, rbio);
1308 int SSL_set_rfd(SSL *s, int fd)
1310 BIO *wbio = SSL_get_wbio(s);
1312 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1313 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1314 BIO *bio = BIO_new(BIO_s_socket());
1317 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1320 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1321 SSL_set0_rbio(s, bio);
1324 SSL_set0_rbio(s, wbio);
1331 /* return length of latest Finished message we sent, copy to 'buf' */
1332 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1336 if (s->s3 != NULL) {
1337 ret = s->s3->tmp.finish_md_len;
1340 memcpy(buf, s->s3->tmp.finish_md, count);
1345 /* return length of latest Finished message we expected, copy to 'buf' */
1346 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1350 if (s->s3 != NULL) {
1351 ret = s->s3->tmp.peer_finish_md_len;
1354 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1359 int SSL_get_verify_mode(const SSL *s)
1361 return s->verify_mode;
1364 int SSL_get_verify_depth(const SSL *s)
1366 return X509_VERIFY_PARAM_get_depth(s->param);
1369 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1370 return s->verify_callback;
1373 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1375 return ctx->verify_mode;
1378 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1380 return X509_VERIFY_PARAM_get_depth(ctx->param);
1383 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1384 return ctx->default_verify_callback;
1387 void SSL_set_verify(SSL *s, int mode,
1388 int (*callback) (int ok, X509_STORE_CTX *ctx))
1390 s->verify_mode = mode;
1391 if (callback != NULL)
1392 s->verify_callback = callback;
1395 void SSL_set_verify_depth(SSL *s, int depth)
1397 X509_VERIFY_PARAM_set_depth(s->param, depth);
1400 void SSL_set_read_ahead(SSL *s, int yes)
1402 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1405 int SSL_get_read_ahead(const SSL *s)
1407 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1410 int SSL_pending(const SSL *s)
1412 size_t pending = s->method->ssl_pending(s);
1415 * SSL_pending cannot work properly if read-ahead is enabled
1416 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1417 * impossible to fix since SSL_pending cannot report errors that may be
1418 * observed while scanning the new data. (Note that SSL_pending() is
1419 * often used as a boolean value, so we'd better not return -1.)
1421 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1422 * we just return INT_MAX.
1424 return pending < INT_MAX ? (int)pending : INT_MAX;
1427 int SSL_has_pending(const SSL *s)
1430 * Similar to SSL_pending() but returns a 1 to indicate that we have
1431 * unprocessed data available or 0 otherwise (as opposed to the number of
1432 * bytes available). Unlike SSL_pending() this will take into account
1433 * read_ahead data. A 1 return simply indicates that we have unprocessed
1434 * data. That data may not result in any application data, or we may fail
1435 * to parse the records for some reason.
1437 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1440 return RECORD_LAYER_read_pending(&s->rlayer);
1443 X509 *SSL_get_peer_certificate(const SSL *s)
1447 if ((s == NULL) || (s->session == NULL))
1450 r = s->session->peer;
1460 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1464 if ((s == NULL) || (s->session == NULL))
1467 r = s->session->peer_chain;
1470 * If we are a client, cert_chain includes the peer's own certificate; if
1471 * we are a server, it does not.
1478 * Now in theory, since the calling process own 't' it should be safe to
1479 * modify. We need to be able to read f without being hassled
1481 int SSL_copy_session_id(SSL *t, const SSL *f)
1484 /* Do we need to to SSL locking? */
1485 if (!SSL_set_session(t, SSL_get_session(f))) {
1490 * what if we are setup for one protocol version but want to talk another
1492 if (t->method != f->method) {
1493 t->method->ssl_free(t);
1494 t->method = f->method;
1495 if (t->method->ssl_new(t) == 0)
1499 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1500 ssl_cert_free(t->cert);
1502 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1509 /* Fix this so it checks all the valid key/cert options */
1510 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1512 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1513 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1516 if (ctx->cert->key->privatekey == NULL) {
1517 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1520 return X509_check_private_key
1521 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1524 /* Fix this function so that it takes an optional type parameter */
1525 int SSL_check_private_key(const SSL *ssl)
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1531 if (ssl->cert->key->x509 == NULL) {
1532 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1535 if (ssl->cert->key->privatekey == NULL) {
1536 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1539 return X509_check_private_key(ssl->cert->key->x509,
1540 ssl->cert->key->privatekey);
1543 int SSL_waiting_for_async(SSL *s)
1551 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1553 ASYNC_WAIT_CTX *ctx = s->waitctx;
1557 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1560 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1561 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1563 ASYNC_WAIT_CTX *ctx = s->waitctx;
1567 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1571 int SSL_accept(SSL *s)
1573 if (s->handshake_func == NULL) {
1574 /* Not properly initialized yet */
1575 SSL_set_accept_state(s);
1578 return SSL_do_handshake(s);
1581 int SSL_connect(SSL *s)
1583 if (s->handshake_func == NULL) {
1584 /* Not properly initialized yet */
1585 SSL_set_connect_state(s);
1588 return SSL_do_handshake(s);
1591 long SSL_get_default_timeout(const SSL *s)
1593 return s->method->get_timeout();
1596 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1597 int (*func) (void *))
1600 if (s->waitctx == NULL) {
1601 s->waitctx = ASYNC_WAIT_CTX_new();
1602 if (s->waitctx == NULL)
1605 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1606 sizeof(struct ssl_async_args))) {
1608 s->rwstate = SSL_NOTHING;
1609 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1612 s->rwstate = SSL_ASYNC_PAUSED;
1615 s->rwstate = SSL_ASYNC_NO_JOBS;
1621 s->rwstate = SSL_NOTHING;
1622 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1623 /* Shouldn't happen */
1628 static int ssl_io_intern(void *vargs)
1630 struct ssl_async_args *args;
1635 args = (struct ssl_async_args *)vargs;
1639 switch (args->type) {
1641 return args->f.func_read(s, buf, num, &s->asyncrw);
1643 return args->f.func_write(s, buf, num, &s->asyncrw);
1645 return args->f.func_other(s);
1650 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1652 if (s->handshake_func == NULL) {
1653 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1657 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1658 s->rwstate = SSL_NOTHING;
1662 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1663 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1664 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1668 * If we are a client and haven't received the ServerHello etc then we
1671 ossl_statem_check_finish_init(s, 0);
1673 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1674 struct ssl_async_args args;
1680 args.type = READFUNC;
1681 args.f.func_read = s->method->ssl_read;
1683 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1684 *readbytes = s->asyncrw;
1687 return s->method->ssl_read(s, buf, num, readbytes);
1691 int SSL_read(SSL *s, void *buf, int num)
1697 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1701 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1704 * The cast is safe here because ret should be <= INT_MAX because num is
1708 ret = (int)readbytes;
1713 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1715 int ret = ssl_read_internal(s, buf, num, readbytes);
1722 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1727 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1728 return SSL_READ_EARLY_DATA_ERROR;
1731 switch (s->early_data_state) {
1732 case SSL_EARLY_DATA_NONE:
1733 if (!SSL_in_before(s)) {
1734 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1735 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1736 return SSL_READ_EARLY_DATA_ERROR;
1740 case SSL_EARLY_DATA_ACCEPT_RETRY:
1741 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1742 ret = SSL_accept(s);
1745 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1746 return SSL_READ_EARLY_DATA_ERROR;
1750 case SSL_EARLY_DATA_READ_RETRY:
1751 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1752 s->early_data_state = SSL_EARLY_DATA_READING;
1753 ret = SSL_read_ex(s, buf, num, readbytes);
1755 * State machine will update early_data_state to
1756 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1759 if (ret > 0 || (ret <= 0 && s->early_data_state
1760 != SSL_EARLY_DATA_FINISHED_READING)) {
1761 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1762 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1763 : SSL_READ_EARLY_DATA_ERROR;
1766 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1769 return SSL_READ_EARLY_DATA_FINISH;
1772 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1773 return SSL_READ_EARLY_DATA_ERROR;
1777 int SSL_get_early_data_status(const SSL *s)
1779 return s->ext.early_data;
1782 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1784 if (s->handshake_func == NULL) {
1785 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1789 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1792 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1793 struct ssl_async_args args;
1799 args.type = READFUNC;
1800 args.f.func_read = s->method->ssl_peek;
1802 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1803 *readbytes = s->asyncrw;
1806 return s->method->ssl_peek(s, buf, num, readbytes);
1810 int SSL_peek(SSL *s, void *buf, int num)
1816 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1820 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1823 * The cast is safe here because ret should be <= INT_MAX because num is
1827 ret = (int)readbytes;
1833 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1835 int ret = ssl_peek_internal(s, buf, num, readbytes);
1842 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1844 if (s->handshake_func == NULL) {
1845 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1849 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1850 s->rwstate = SSL_NOTHING;
1851 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1855 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1856 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1857 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1858 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1861 /* If we are a client and haven't sent the Finished we better do that */
1862 ossl_statem_check_finish_init(s, 1);
1864 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1866 struct ssl_async_args args;
1869 args.buf = (void *)buf;
1871 args.type = WRITEFUNC;
1872 args.f.func_write = s->method->ssl_write;
1874 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1875 *written = s->asyncrw;
1878 return s->method->ssl_write(s, buf, num, written);
1882 int SSL_write(SSL *s, const void *buf, int num)
1888 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1892 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1895 * The cast is safe here because ret should be <= INT_MAX because num is
1904 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1906 int ret = ssl_write_internal(s, buf, num, written);
1913 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1915 int ret, early_data_state;
1917 switch (s->early_data_state) {
1918 case SSL_EARLY_DATA_NONE:
1920 || !SSL_in_before(s)
1921 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1922 && (s->psk_use_session_cb == NULL))) {
1923 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1924 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1929 case SSL_EARLY_DATA_CONNECT_RETRY:
1930 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1931 ret = SSL_connect(s);
1934 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1939 case SSL_EARLY_DATA_WRITE_RETRY:
1940 s->early_data_state = SSL_EARLY_DATA_WRITING;
1941 ret = SSL_write_ex(s, buf, num, written);
1942 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1945 case SSL_EARLY_DATA_FINISHED_READING:
1946 case SSL_EARLY_DATA_READ_RETRY:
1947 early_data_state = s->early_data_state;
1948 /* We are a server writing to an unauthenticated client */
1949 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1950 ret = SSL_write_ex(s, buf, num, written);
1951 s->early_data_state = early_data_state;
1955 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1960 int SSL_shutdown(SSL *s)
1963 * Note that this function behaves differently from what one might
1964 * expect. Return values are 0 for no success (yet), 1 for success; but
1965 * calling it once is usually not enough, even if blocking I/O is used
1966 * (see ssl3_shutdown).
1969 if (s->handshake_func == NULL) {
1970 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1974 if (!SSL_in_init(s)) {
1975 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1976 struct ssl_async_args args;
1979 args.type = OTHERFUNC;
1980 args.f.func_other = s->method->ssl_shutdown;
1982 return ssl_start_async_job(s, &args, ssl_io_intern);
1984 return s->method->ssl_shutdown(s);
1987 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1992 int SSL_key_update(SSL *s, int updatetype)
1995 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1996 * negotiated, and that it is appropriate to call SSL_key_update() instead
1997 * of SSL_renegotiate().
1999 if (!SSL_IS_TLS13(s)) {
2000 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2004 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2005 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2006 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2010 if (!SSL_is_init_finished(s)) {
2011 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2015 ossl_statem_set_in_init(s, 1);
2016 s->key_update = updatetype;
2020 int SSL_get_key_update_type(SSL *s)
2022 return s->key_update;
2025 int SSL_renegotiate(SSL *s)
2027 if (SSL_IS_TLS13(s)) {
2028 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2032 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2033 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2040 return s->method->ssl_renegotiate(s);
2043 int SSL_renegotiate_abbreviated(SSL *s)
2045 if (SSL_IS_TLS13(s)) {
2046 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2050 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2051 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2058 return s->method->ssl_renegotiate(s);
2061 int SSL_renegotiate_pending(SSL *s)
2064 * becomes true when negotiation is requested; false again once a
2065 * handshake has finished
2067 return (s->renegotiate != 0);
2070 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2075 case SSL_CTRL_GET_READ_AHEAD:
2076 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2077 case SSL_CTRL_SET_READ_AHEAD:
2078 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2079 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2082 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2083 s->msg_callback_arg = parg;
2087 return (s->mode |= larg);
2088 case SSL_CTRL_CLEAR_MODE:
2089 return (s->mode &= ~larg);
2090 case SSL_CTRL_GET_MAX_CERT_LIST:
2091 return (long)s->max_cert_list;
2092 case SSL_CTRL_SET_MAX_CERT_LIST:
2095 l = (long)s->max_cert_list;
2096 s->max_cert_list = (size_t)larg;
2098 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2099 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2101 s->max_send_fragment = larg;
2102 if (s->max_send_fragment < s->split_send_fragment)
2103 s->split_send_fragment = s->max_send_fragment;
2105 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2106 if ((size_t)larg > s->max_send_fragment || larg == 0)
2108 s->split_send_fragment = larg;
2110 case SSL_CTRL_SET_MAX_PIPELINES:
2111 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2113 s->max_pipelines = larg;
2115 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2117 case SSL_CTRL_GET_RI_SUPPORT:
2119 return s->s3->send_connection_binding;
2122 case SSL_CTRL_CERT_FLAGS:
2123 return (s->cert->cert_flags |= larg);
2124 case SSL_CTRL_CLEAR_CERT_FLAGS:
2125 return (s->cert->cert_flags &= ~larg);
2127 case SSL_CTRL_GET_RAW_CIPHERLIST:
2129 if (s->s3->tmp.ciphers_raw == NULL)
2131 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2132 return (int)s->s3->tmp.ciphers_rawlen;
2134 return TLS_CIPHER_LEN;
2136 case SSL_CTRL_GET_EXTMS_SUPPORT:
2137 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2139 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2143 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2144 return ssl_check_allowed_versions(larg, s->max_proto_version)
2145 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2146 &s->min_proto_version);
2147 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2148 return s->min_proto_version;
2149 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2150 return ssl_check_allowed_versions(s->min_proto_version, larg)
2151 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2152 &s->max_proto_version);
2153 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2154 return s->max_proto_version;
2156 return s->method->ssl_ctrl(s, cmd, larg, parg);
2160 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2163 case SSL_CTRL_SET_MSG_CALLBACK:
2164 s->msg_callback = (void (*)
2165 (int write_p, int version, int content_type,
2166 const void *buf, size_t len, SSL *ssl,
2171 return s->method->ssl_callback_ctrl(s, cmd, fp);
2175 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2177 return ctx->sessions;
2180 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2183 /* For some cases with ctx == NULL perform syntax checks */
2186 #ifndef OPENSSL_NO_EC
2187 case SSL_CTRL_SET_GROUPS_LIST:
2188 return tls1_set_groups_list(NULL, NULL, parg);
2190 case SSL_CTRL_SET_SIGALGS_LIST:
2191 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2192 return tls1_set_sigalgs_list(NULL, parg, 0);
2199 case SSL_CTRL_GET_READ_AHEAD:
2200 return ctx->read_ahead;
2201 case SSL_CTRL_SET_READ_AHEAD:
2202 l = ctx->read_ahead;
2203 ctx->read_ahead = larg;
2206 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2207 ctx->msg_callback_arg = parg;
2210 case SSL_CTRL_GET_MAX_CERT_LIST:
2211 return (long)ctx->max_cert_list;
2212 case SSL_CTRL_SET_MAX_CERT_LIST:
2215 l = (long)ctx->max_cert_list;
2216 ctx->max_cert_list = (size_t)larg;
2219 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2222 l = (long)ctx->session_cache_size;
2223 ctx->session_cache_size = (size_t)larg;
2225 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2226 return (long)ctx->session_cache_size;
2227 case SSL_CTRL_SET_SESS_CACHE_MODE:
2228 l = ctx->session_cache_mode;
2229 ctx->session_cache_mode = larg;
2231 case SSL_CTRL_GET_SESS_CACHE_MODE:
2232 return ctx->session_cache_mode;
2234 case SSL_CTRL_SESS_NUMBER:
2235 return lh_SSL_SESSION_num_items(ctx->sessions);
2236 case SSL_CTRL_SESS_CONNECT:
2237 return ctx->stats.sess_connect;
2238 case SSL_CTRL_SESS_CONNECT_GOOD:
2239 return ctx->stats.sess_connect_good;
2240 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2241 return ctx->stats.sess_connect_renegotiate;
2242 case SSL_CTRL_SESS_ACCEPT:
2243 return ctx->stats.sess_accept;
2244 case SSL_CTRL_SESS_ACCEPT_GOOD:
2245 return ctx->stats.sess_accept_good;
2246 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2247 return ctx->stats.sess_accept_renegotiate;
2248 case SSL_CTRL_SESS_HIT:
2249 return ctx->stats.sess_hit;
2250 case SSL_CTRL_SESS_CB_HIT:
2251 return ctx->stats.sess_cb_hit;
2252 case SSL_CTRL_SESS_MISSES:
2253 return ctx->stats.sess_miss;
2254 case SSL_CTRL_SESS_TIMEOUTS:
2255 return ctx->stats.sess_timeout;
2256 case SSL_CTRL_SESS_CACHE_FULL:
2257 return ctx->stats.sess_cache_full;
2259 return (ctx->mode |= larg);
2260 case SSL_CTRL_CLEAR_MODE:
2261 return (ctx->mode &= ~larg);
2262 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2263 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2265 ctx->max_send_fragment = larg;
2266 if (ctx->max_send_fragment < ctx->split_send_fragment)
2267 ctx->split_send_fragment = ctx->max_send_fragment;
2269 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2270 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2272 ctx->split_send_fragment = larg;
2274 case SSL_CTRL_SET_MAX_PIPELINES:
2275 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2277 ctx->max_pipelines = larg;
2279 case SSL_CTRL_CERT_FLAGS:
2280 return (ctx->cert->cert_flags |= larg);
2281 case SSL_CTRL_CLEAR_CERT_FLAGS:
2282 return (ctx->cert->cert_flags &= ~larg);
2283 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2284 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2285 && ssl_set_version_bound(ctx->method->version, (int)larg,
2286 &ctx->min_proto_version);
2287 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2288 return ctx->min_proto_version;
2289 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2290 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2291 && ssl_set_version_bound(ctx->method->version, (int)larg,
2292 &ctx->max_proto_version);
2293 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2294 return ctx->max_proto_version;
2296 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2300 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2303 case SSL_CTRL_SET_MSG_CALLBACK:
2304 ctx->msg_callback = (void (*)
2305 (int write_p, int version, int content_type,
2306 const void *buf, size_t len, SSL *ssl,
2311 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2315 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2324 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2325 const SSL_CIPHER *const *bp)
2327 if ((*ap)->id > (*bp)->id)
2329 if ((*ap)->id < (*bp)->id)
2334 /** return a STACK of the ciphers available for the SSL and in order of
2336 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2339 if (s->cipher_list != NULL) {
2340 return s->cipher_list;
2341 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2342 return s->ctx->cipher_list;
2348 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2350 if ((s == NULL) || (s->session == NULL) || !s->server)
2352 return s->session->ciphers;
2355 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2357 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2359 ciphers = SSL_get_ciphers(s);
2362 ssl_set_client_disabled(s);
2363 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2364 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2365 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2367 sk = sk_SSL_CIPHER_new_null();
2370 if (!sk_SSL_CIPHER_push(sk, c)) {
2371 sk_SSL_CIPHER_free(sk);
2379 /** return a STACK of the ciphers available for the SSL and in order of
2381 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2384 if (s->cipher_list_by_id != NULL) {
2385 return s->cipher_list_by_id;
2386 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2387 return s->ctx->cipher_list_by_id;
2393 /** The old interface to get the same thing as SSL_get_ciphers() */
2394 const char *SSL_get_cipher_list(const SSL *s, int n)
2396 const SSL_CIPHER *c;
2397 STACK_OF(SSL_CIPHER) *sk;
2401 sk = SSL_get_ciphers(s);
2402 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2404 c = sk_SSL_CIPHER_value(sk, n);
2410 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2412 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2415 return ctx->cipher_list;
2419 /** specify the ciphers to be used by default by the SSL_CTX */
2420 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2422 STACK_OF(SSL_CIPHER) *sk;
2424 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2425 &ctx->cipher_list_by_id, str, ctx->cert);
2427 * ssl_create_cipher_list may return an empty stack if it was unable to
2428 * find a cipher matching the given rule string (for example if the rule
2429 * string specifies a cipher which has been disabled). This is not an
2430 * error as far as ssl_create_cipher_list is concerned, and hence
2431 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2435 else if (sk_SSL_CIPHER_num(sk) == 0) {
2436 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2442 /** specify the ciphers to be used by the SSL */
2443 int SSL_set_cipher_list(SSL *s, const char *str)
2445 STACK_OF(SSL_CIPHER) *sk;
2447 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2448 &s->cipher_list_by_id, str, s->cert);
2449 /* see comment in SSL_CTX_set_cipher_list */
2452 else if (sk_SSL_CIPHER_num(sk) == 0) {
2453 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2459 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2462 STACK_OF(SSL_CIPHER) *sk;
2463 const SSL_CIPHER *c;
2466 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2470 sk = s->session->ciphers;
2472 if (sk_SSL_CIPHER_num(sk) == 0)
2475 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2478 c = sk_SSL_CIPHER_value(sk, i);
2479 n = strlen(c->name);
2495 /** return a servername extension value if provided in Client Hello, or NULL.
2496 * So far, only host_name types are defined (RFC 3546).
2499 const char *SSL_get_servername(const SSL *s, const int type)
2501 if (type != TLSEXT_NAMETYPE_host_name)
2504 return s->session && !s->ext.hostname ?
2505 s->session->ext.hostname : s->ext.hostname;
2508 int SSL_get_servername_type(const SSL *s)
2511 && (!s->ext.hostname ? s->session->
2512 ext.hostname : s->ext.hostname))
2513 return TLSEXT_NAMETYPE_host_name;
2518 * SSL_select_next_proto implements the standard protocol selection. It is
2519 * expected that this function is called from the callback set by
2520 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2521 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2522 * not included in the length. A byte string of length 0 is invalid. No byte
2523 * string may be truncated. The current, but experimental algorithm for
2524 * selecting the protocol is: 1) If the server doesn't support NPN then this
2525 * is indicated to the callback. In this case, the client application has to
2526 * abort the connection or have a default application level protocol. 2) If
2527 * the server supports NPN, but advertises an empty list then the client
2528 * selects the first protocol in its list, but indicates via the API that this
2529 * fallback case was enacted. 3) Otherwise, the client finds the first
2530 * protocol in the server's list that it supports and selects this protocol.
2531 * This is because it's assumed that the server has better information about
2532 * which protocol a client should use. 4) If the client doesn't support any
2533 * of the server's advertised protocols, then this is treated the same as
2534 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2535 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2537 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2538 const unsigned char *server,
2539 unsigned int server_len,
2540 const unsigned char *client, unsigned int client_len)
2543 const unsigned char *result;
2544 int status = OPENSSL_NPN_UNSUPPORTED;
2547 * For each protocol in server preference order, see if we support it.
2549 for (i = 0; i < server_len;) {
2550 for (j = 0; j < client_len;) {
2551 if (server[i] == client[j] &&
2552 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2553 /* We found a match */
2554 result = &server[i];
2555 status = OPENSSL_NPN_NEGOTIATED;
2565 /* There's no overlap between our protocols and the server's list. */
2567 status = OPENSSL_NPN_NO_OVERLAP;
2570 *out = (unsigned char *)result + 1;
2571 *outlen = result[0];
2575 #ifndef OPENSSL_NO_NEXTPROTONEG
2577 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2578 * client's requested protocol for this connection and returns 0. If the
2579 * client didn't request any protocol, then *data is set to NULL. Note that
2580 * the client can request any protocol it chooses. The value returned from
2581 * this function need not be a member of the list of supported protocols
2582 * provided by the callback.
2584 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2591 *len = (unsigned int)s->ext.npn_len;
2596 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2597 * a TLS server needs a list of supported protocols for Next Protocol
2598 * Negotiation. The returned list must be in wire format. The list is
2599 * returned by setting |out| to point to it and |outlen| to its length. This
2600 * memory will not be modified, but one should assume that the SSL* keeps a
2601 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2602 * wishes to advertise. Otherwise, no such extension will be included in the
2605 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2606 SSL_CTX_npn_advertised_cb_func cb,
2609 ctx->ext.npn_advertised_cb = cb;
2610 ctx->ext.npn_advertised_cb_arg = arg;
2614 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2615 * client needs to select a protocol from the server's provided list. |out|
2616 * must be set to point to the selected protocol (which may be within |in|).
2617 * The length of the protocol name must be written into |outlen|. The
2618 * server's advertised protocols are provided in |in| and |inlen|. The
2619 * callback can assume that |in| is syntactically valid. The client must
2620 * select a protocol. It is fatal to the connection if this callback returns
2621 * a value other than SSL_TLSEXT_ERR_OK.
2623 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2624 SSL_CTX_npn_select_cb_func cb,
2627 ctx->ext.npn_select_cb = cb;
2628 ctx->ext.npn_select_cb_arg = arg;
2633 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2634 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2635 * length-prefixed strings). Returns 0 on success.
2637 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2638 unsigned int protos_len)
2640 OPENSSL_free(ctx->ext.alpn);
2641 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2642 if (ctx->ext.alpn == NULL) {
2643 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2646 ctx->ext.alpn_len = protos_len;
2652 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2653 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2654 * length-prefixed strings). Returns 0 on success.
2656 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2657 unsigned int protos_len)
2659 OPENSSL_free(ssl->ext.alpn);
2660 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2661 if (ssl->ext.alpn == NULL) {
2662 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2665 ssl->ext.alpn_len = protos_len;
2671 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2672 * called during ClientHello processing in order to select an ALPN protocol
2673 * from the client's list of offered protocols.
2675 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2676 SSL_CTX_alpn_select_cb_func cb,
2679 ctx->ext.alpn_select_cb = cb;
2680 ctx->ext.alpn_select_cb_arg = arg;
2684 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2685 * On return it sets |*data| to point to |*len| bytes of protocol name
2686 * (not including the leading length-prefix byte). If the server didn't
2687 * respond with a negotiated protocol then |*len| will be zero.
2689 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2694 *data = ssl->s3->alpn_selected;
2698 *len = (unsigned int)ssl->s3->alpn_selected_len;
2701 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2702 const char *label, size_t llen,
2703 const unsigned char *context, size_t contextlen,
2706 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2709 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2711 contextlen, use_context);
2714 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2716 const unsigned char *session_id = a->session_id;
2718 unsigned char tmp_storage[4];
2720 if (a->session_id_length < sizeof(tmp_storage)) {
2721 memset(tmp_storage, 0, sizeof(tmp_storage));
2722 memcpy(tmp_storage, a->session_id, a->session_id_length);
2723 session_id = tmp_storage;
2727 ((unsigned long)session_id[0]) |
2728 ((unsigned long)session_id[1] << 8L) |
2729 ((unsigned long)session_id[2] << 16L) |
2730 ((unsigned long)session_id[3] << 24L);
2735 * NB: If this function (or indeed the hash function which uses a sort of
2736 * coarser function than this one) is changed, ensure
2737 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2738 * being able to construct an SSL_SESSION that will collide with any existing
2739 * session with a matching session ID.
2741 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2743 if (a->ssl_version != b->ssl_version)
2745 if (a->session_id_length != b->session_id_length)
2747 return memcmp(a->session_id, b->session_id, a->session_id_length);
2751 * These wrapper functions should remain rather than redeclaring
2752 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2753 * variable. The reason is that the functions aren't static, they're exposed
2757 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2759 SSL_CTX *ret = NULL;
2762 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2766 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2769 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2770 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2773 ret = OPENSSL_zalloc(sizeof(*ret));
2778 ret->min_proto_version = 0;
2779 ret->max_proto_version = 0;
2780 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2781 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2782 /* We take the system default. */
2783 ret->session_timeout = meth->get_timeout();
2784 ret->references = 1;
2785 ret->lock = CRYPTO_THREAD_lock_new();
2786 if (ret->lock == NULL) {
2787 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2791 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2792 ret->verify_mode = SSL_VERIFY_NONE;
2793 if ((ret->cert = ssl_cert_new()) == NULL)
2796 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2797 if (ret->sessions == NULL)
2799 ret->cert_store = X509_STORE_new();
2800 if (ret->cert_store == NULL)
2802 #ifndef OPENSSL_NO_CT
2803 ret->ctlog_store = CTLOG_STORE_new();
2804 if (ret->ctlog_store == NULL)
2807 if (!ssl_create_cipher_list(ret->method,
2808 &ret->cipher_list, &ret->cipher_list_by_id,
2809 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2810 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2811 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2815 ret->param = X509_VERIFY_PARAM_new();
2816 if (ret->param == NULL)
2819 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2820 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2823 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2824 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2828 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2831 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2834 /* No compression for DTLS */
2835 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2836 ret->comp_methods = SSL_COMP_get_compression_methods();
2838 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2839 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2841 /* Setup RFC5077 ticket keys */
2842 if ((RAND_bytes(ret->ext.tick_key_name,
2843 sizeof(ret->ext.tick_key_name)) <= 0)
2844 || (RAND_bytes(ret->ext.tick_hmac_key,
2845 sizeof(ret->ext.tick_hmac_key)) <= 0)
2846 || (RAND_bytes(ret->ext.tick_aes_key,
2847 sizeof(ret->ext.tick_aes_key)) <= 0))
2848 ret->options |= SSL_OP_NO_TICKET;
2850 #ifndef OPENSSL_NO_SRP
2851 if (!SSL_CTX_SRP_CTX_init(ret))
2854 #ifndef OPENSSL_NO_ENGINE
2855 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2856 # define eng_strx(x) #x
2857 # define eng_str(x) eng_strx(x)
2858 /* Use specific client engine automatically... ignore errors */
2861 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2864 ENGINE_load_builtin_engines();
2865 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2867 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2873 * Default is to connect to non-RI servers. When RI is more widely
2874 * deployed might change this.
2876 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2878 * Disable compression by default to prevent CRIME. Applications can
2879 * re-enable compression by configuring
2880 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2881 * or by using the SSL_CONF library.
2883 ret->options |= SSL_OP_NO_COMPRESSION;
2885 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2888 * Default max early data is a fully loaded single record. Could be split
2889 * across multiple records in practice
2891 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2895 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2901 int SSL_CTX_up_ref(SSL_CTX *ctx)
2905 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2908 REF_PRINT_COUNT("SSL_CTX", ctx);
2909 REF_ASSERT_ISNT(i < 2);
2910 return ((i > 1) ? 1 : 0);
2913 void SSL_CTX_free(SSL_CTX *a)
2920 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2921 REF_PRINT_COUNT("SSL_CTX", a);
2924 REF_ASSERT_ISNT(i < 0);
2926 X509_VERIFY_PARAM_free(a->param);
2927 dane_ctx_final(&a->dane);
2930 * Free internal session cache. However: the remove_cb() may reference
2931 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2932 * after the sessions were flushed.
2933 * As the ex_data handling routines might also touch the session cache,
2934 * the most secure solution seems to be: empty (flush) the cache, then
2935 * free ex_data, then finally free the cache.
2936 * (See ticket [openssl.org #212].)
2938 if (a->sessions != NULL)
2939 SSL_CTX_flush_sessions(a, 0);
2941 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2942 lh_SSL_SESSION_free(a->sessions);
2943 X509_STORE_free(a->cert_store);
2944 #ifndef OPENSSL_NO_CT
2945 CTLOG_STORE_free(a->ctlog_store);
2947 sk_SSL_CIPHER_free(a->cipher_list);
2948 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2949 ssl_cert_free(a->cert);
2950 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2951 sk_X509_pop_free(a->extra_certs, X509_free);
2952 a->comp_methods = NULL;
2953 #ifndef OPENSSL_NO_SRTP
2954 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2956 #ifndef OPENSSL_NO_SRP
2957 SSL_CTX_SRP_CTX_free(a);
2959 #ifndef OPENSSL_NO_ENGINE
2960 ENGINE_finish(a->client_cert_engine);
2963 #ifndef OPENSSL_NO_EC
2964 OPENSSL_free(a->ext.ecpointformats);
2965 OPENSSL_free(a->ext.supportedgroups);
2967 OPENSSL_free(a->ext.alpn);
2969 CRYPTO_THREAD_lock_free(a->lock);
2974 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2976 ctx->default_passwd_callback = cb;
2979 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2981 ctx->default_passwd_callback_userdata = u;
2984 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2986 return ctx->default_passwd_callback;
2989 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2991 return ctx->default_passwd_callback_userdata;
2994 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2996 s->default_passwd_callback = cb;
2999 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3001 s->default_passwd_callback_userdata = u;
3004 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3006 return s->default_passwd_callback;
3009 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3011 return s->default_passwd_callback_userdata;
3014 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3015 int (*cb) (X509_STORE_CTX *, void *),
3018 ctx->app_verify_callback = cb;
3019 ctx->app_verify_arg = arg;
3022 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3023 int (*cb) (int, X509_STORE_CTX *))
3025 ctx->verify_mode = mode;
3026 ctx->default_verify_callback = cb;
3029 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3031 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3034 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3036 ssl_cert_set_cert_cb(c->cert, cb, arg);
3039 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3041 ssl_cert_set_cert_cb(s->cert, cb, arg);
3044 void ssl_set_masks(SSL *s)
3047 uint32_t *pvalid = s->s3->tmp.valid_flags;
3048 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3049 unsigned long mask_k, mask_a;
3050 #ifndef OPENSSL_NO_EC
3051 int have_ecc_cert, ecdsa_ok;
3056 #ifndef OPENSSL_NO_DH
3057 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3062 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3063 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3064 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3065 #ifndef OPENSSL_NO_EC
3066 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3072 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3073 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3076 #ifndef OPENSSL_NO_GOST
3077 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3078 mask_k |= SSL_kGOST;
3079 mask_a |= SSL_aGOST12;
3081 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3082 mask_k |= SSL_kGOST;
3083 mask_a |= SSL_aGOST12;
3085 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3086 mask_k |= SSL_kGOST;
3087 mask_a |= SSL_aGOST01;
3098 * If we only have an RSA-PSS certificate allow RSA authentication
3099 * if TLS 1.2 and peer supports it.
3102 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3103 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3104 && TLS1_get_version(s) == TLS1_2_VERSION))
3111 mask_a |= SSL_aNULL;
3114 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3115 * depending on the key usage extension.
3117 #ifndef OPENSSL_NO_EC
3118 if (have_ecc_cert) {
3120 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3121 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3122 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3125 mask_a |= SSL_aECDSA;
3127 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3128 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3129 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3130 && TLS1_get_version(s) == TLS1_2_VERSION)
3131 mask_a |= SSL_aECDSA;
3134 #ifndef OPENSSL_NO_EC
3135 mask_k |= SSL_kECDHE;
3138 #ifndef OPENSSL_NO_PSK
3141 if (mask_k & SSL_kRSA)
3142 mask_k |= SSL_kRSAPSK;
3143 if (mask_k & SSL_kDHE)
3144 mask_k |= SSL_kDHEPSK;
3145 if (mask_k & SSL_kECDHE)
3146 mask_k |= SSL_kECDHEPSK;
3149 s->s3->tmp.mask_k = mask_k;
3150 s->s3->tmp.mask_a = mask_a;
3153 #ifndef OPENSSL_NO_EC
3155 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3157 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3158 /* key usage, if present, must allow signing */
3159 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3160 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3161 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3165 return 1; /* all checks are ok */
3170 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3171 size_t *serverinfo_length)
3173 CERT_PKEY *cpk = s->s3->tmp.cert;
3174 *serverinfo_length = 0;
3176 if (cpk == NULL || cpk->serverinfo == NULL)
3179 *serverinfo = cpk->serverinfo;
3180 *serverinfo_length = cpk->serverinfo_length;
3184 void ssl_update_cache(SSL *s, int mode)
3189 * If the session_id_length is 0, we are not supposed to cache it, and it
3190 * would be rather hard to do anyway :-)
3192 if (s->session->session_id_length == 0)
3195 i = s->session_ctx->session_cache_mode;
3197 && (!s->hit || SSL_IS_TLS13(s))
3198 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
3199 || SSL_CTX_add_session(s->session_ctx, s->session))
3200 && s->session_ctx->new_session_cb != NULL) {
3201 SSL_SESSION_up_ref(s->session);
3202 if (!s->session_ctx->new_session_cb(s, s->session))
3203 SSL_SESSION_free(s->session);
3206 /* auto flush every 255 connections */
3207 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3208 if ((((mode & SSL_SESS_CACHE_CLIENT)
3209 ? s->session_ctx->stats.sess_connect_good
3210 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3211 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3216 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3221 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3226 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3230 if (s->method != meth) {
3231 const SSL_METHOD *sm = s->method;
3232 int (*hf) (SSL *) = s->handshake_func;
3234 if (sm->version == meth->version)
3239 ret = s->method->ssl_new(s);
3242 if (hf == sm->ssl_connect)
3243 s->handshake_func = meth->ssl_connect;
3244 else if (hf == sm->ssl_accept)
3245 s->handshake_func = meth->ssl_accept;
3250 int SSL_get_error(const SSL *s, int i)
3257 return SSL_ERROR_NONE;
3260 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3261 * where we do encode the error
3263 if ((l = ERR_peek_error()) != 0) {
3264 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3265 return SSL_ERROR_SYSCALL;
3267 return SSL_ERROR_SSL;
3270 if (SSL_want_read(s)) {
3271 bio = SSL_get_rbio(s);
3272 if (BIO_should_read(bio))
3273 return SSL_ERROR_WANT_READ;
3274 else if (BIO_should_write(bio))
3276 * This one doesn't make too much sense ... We never try to write
3277 * to the rbio, and an application program where rbio and wbio
3278 * are separate couldn't even know what it should wait for.
3279 * However if we ever set s->rwstate incorrectly (so that we have
3280 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3281 * wbio *are* the same, this test works around that bug; so it
3282 * might be safer to keep it.
3284 return SSL_ERROR_WANT_WRITE;
3285 else if (BIO_should_io_special(bio)) {
3286 reason = BIO_get_retry_reason(bio);
3287 if (reason == BIO_RR_CONNECT)
3288 return SSL_ERROR_WANT_CONNECT;
3289 else if (reason == BIO_RR_ACCEPT)
3290 return SSL_ERROR_WANT_ACCEPT;
3292 return SSL_ERROR_SYSCALL; /* unknown */
3296 if (SSL_want_write(s)) {
3297 /* Access wbio directly - in order to use the buffered bio if present */
3299 if (BIO_should_write(bio))
3300 return SSL_ERROR_WANT_WRITE;
3301 else if (BIO_should_read(bio))
3303 * See above (SSL_want_read(s) with BIO_should_write(bio))
3305 return SSL_ERROR_WANT_READ;
3306 else if (BIO_should_io_special(bio)) {
3307 reason = BIO_get_retry_reason(bio);
3308 if (reason == BIO_RR_CONNECT)
3309 return SSL_ERROR_WANT_CONNECT;
3310 else if (reason == BIO_RR_ACCEPT)
3311 return SSL_ERROR_WANT_ACCEPT;
3313 return SSL_ERROR_SYSCALL;
3316 if (SSL_want_x509_lookup(s))
3317 return SSL_ERROR_WANT_X509_LOOKUP;
3318 if (SSL_want_async(s))
3319 return SSL_ERROR_WANT_ASYNC;
3320 if (SSL_want_async_job(s))
3321 return SSL_ERROR_WANT_ASYNC_JOB;
3322 if (SSL_want_client_hello_cb(s))
3323 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3325 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3326 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3327 return SSL_ERROR_ZERO_RETURN;
3329 return SSL_ERROR_SYSCALL;
3332 static int ssl_do_handshake_intern(void *vargs)
3334 struct ssl_async_args *args;
3337 args = (struct ssl_async_args *)vargs;
3340 return s->handshake_func(s);
3343 int SSL_do_handshake(SSL *s)
3347 if (s->handshake_func == NULL) {
3348 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3352 ossl_statem_check_finish_init(s, -1);
3354 s->method->ssl_renegotiate_check(s, 0);
3356 if (SSL_is_server(s)) {
3357 /* clear SNI settings at server-side */
3358 OPENSSL_free(s->ext.hostname);
3359 s->ext.hostname = NULL;
3362 if (SSL_in_init(s) || SSL_in_before(s)) {
3363 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3364 struct ssl_async_args args;
3368 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3370 ret = s->handshake_func(s);
3376 void SSL_set_accept_state(SSL *s)
3380 ossl_statem_clear(s);
3381 s->handshake_func = s->method->ssl_accept;
3385 void SSL_set_connect_state(SSL *s)
3389 ossl_statem_clear(s);
3390 s->handshake_func = s->method->ssl_connect;
3394 int ssl_undefined_function(SSL *s)
3396 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3400 int ssl_undefined_void_function(void)
3402 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3403 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3407 int ssl_undefined_const_function(const SSL *s)
3412 const SSL_METHOD *ssl_bad_method(int ver)
3414 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3418 const char *ssl_protocol_to_string(int version)
3422 case TLS1_3_VERSION:
3425 case TLS1_2_VERSION:
3428 case TLS1_1_VERSION:
3443 case DTLS1_2_VERSION:
3451 const char *SSL_get_version(const SSL *s)
3453 return ssl_protocol_to_string(s->version);
3456 SSL *SSL_dup(SSL *s)
3458 STACK_OF(X509_NAME) *sk;
3463 /* If we're not quiescent, just up_ref! */
3464 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3465 CRYPTO_UP_REF(&s->references, &i, s->lock);
3470 * Otherwise, copy configuration state, and session if set.
3472 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3475 if (s->session != NULL) {
3477 * Arranges to share the same session via up_ref. This "copies"
3478 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3480 if (!SSL_copy_session_id(ret, s))
3484 * No session has been established yet, so we have to expect that
3485 * s->cert or ret->cert will be changed later -- they should not both
3486 * point to the same object, and thus we can't use
3487 * SSL_copy_session_id.
3489 if (!SSL_set_ssl_method(ret, s->method))
3492 if (s->cert != NULL) {
3493 ssl_cert_free(ret->cert);
3494 ret->cert = ssl_cert_dup(s->cert);
3495 if (ret->cert == NULL)
3499 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3500 (int)s->sid_ctx_length))
3504 if (!ssl_dane_dup(ret, s))
3506 ret->version = s->version;
3507 ret->options = s->options;
3508 ret->mode = s->mode;
3509 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3510 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3511 ret->msg_callback = s->msg_callback;
3512 ret->msg_callback_arg = s->msg_callback_arg;
3513 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3514 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3515 ret->generate_session_id = s->generate_session_id;
3517 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3519 /* copy app data, a little dangerous perhaps */
3520 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3523 /* setup rbio, and wbio */
3524 if (s->rbio != NULL) {
3525 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3528 if (s->wbio != NULL) {
3529 if (s->wbio != s->rbio) {
3530 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3533 BIO_up_ref(ret->rbio);
3534 ret->wbio = ret->rbio;
3538 ret->server = s->server;
3539 if (s->handshake_func) {
3541 SSL_set_accept_state(ret);
3543 SSL_set_connect_state(ret);
3545 ret->shutdown = s->shutdown;
3548 ret->default_passwd_callback = s->default_passwd_callback;
3549 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3551 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3553 /* dup the cipher_list and cipher_list_by_id stacks */
3554 if (s->cipher_list != NULL) {
3555 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3558 if (s->cipher_list_by_id != NULL)
3559 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3563 /* Dup the client_CA list */
3564 if (s->ca_names != NULL) {
3565 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3568 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3569 xn = sk_X509_NAME_value(sk, i);
3570 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3583 void ssl_clear_cipher_ctx(SSL *s)
3585 if (s->enc_read_ctx != NULL) {
3586 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3587 s->enc_read_ctx = NULL;
3589 if (s->enc_write_ctx != NULL) {
3590 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3591 s->enc_write_ctx = NULL;
3593 #ifndef OPENSSL_NO_COMP
3594 COMP_CTX_free(s->expand);
3596 COMP_CTX_free(s->compress);
3601 X509 *SSL_get_certificate(const SSL *s)
3603 if (s->cert != NULL)
3604 return s->cert->key->x509;
3609 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3611 if (s->cert != NULL)
3612 return s->cert->key->privatekey;
3617 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3619 if (ctx->cert != NULL)
3620 return ctx->cert->key->x509;
3625 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3627 if (ctx->cert != NULL)
3628 return ctx->cert->key->privatekey;
3633 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3635 if ((s->session != NULL) && (s->session->cipher != NULL))
3636 return s->session->cipher;
3640 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3642 return s->s3->tmp.new_cipher;
3645 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3647 #ifndef OPENSSL_NO_COMP
3648 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3654 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3656 #ifndef OPENSSL_NO_COMP
3657 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3663 int ssl_init_wbio_buffer(SSL *s)
3667 if (s->bbio != NULL) {
3668 /* Already buffered. */
3672 bbio = BIO_new(BIO_f_buffer());
3673 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3675 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3679 s->wbio = BIO_push(bbio, s->wbio);
3684 int ssl_free_wbio_buffer(SSL *s)
3686 /* callers ensure s is never null */
3687 if (s->bbio == NULL)
3690 s->wbio = BIO_pop(s->wbio);
3691 if (!ossl_assert(s->wbio != NULL))
3699 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3701 ctx->quiet_shutdown = mode;
3704 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3706 return ctx->quiet_shutdown;
3709 void SSL_set_quiet_shutdown(SSL *s, int mode)
3711 s->quiet_shutdown = mode;
3714 int SSL_get_quiet_shutdown(const SSL *s)
3716 return s->quiet_shutdown;
3719 void SSL_set_shutdown(SSL *s, int mode)
3724 int SSL_get_shutdown(const SSL *s)
3729 int SSL_version(const SSL *s)
3734 int SSL_client_version(const SSL *s)
3736 return s->client_version;
3739 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3744 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3747 if (ssl->ctx == ctx)
3750 ctx = ssl->session_ctx;
3751 new_cert = ssl_cert_dup(ctx->cert);
3752 if (new_cert == NULL) {
3756 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3757 ssl_cert_free(new_cert);
3761 ssl_cert_free(ssl->cert);
3762 ssl->cert = new_cert;
3765 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3766 * so setter APIs must prevent invalid lengths from entering the system.
3768 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3772 * If the session ID context matches that of the parent SSL_CTX,
3773 * inherit it from the new SSL_CTX as well. If however the context does
3774 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3775 * leave it unchanged.
3777 if ((ssl->ctx != NULL) &&
3778 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3779 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3780 ssl->sid_ctx_length = ctx->sid_ctx_length;
3781 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3784 SSL_CTX_up_ref(ctx);
3785 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3791 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3793 return X509_STORE_set_default_paths(ctx->cert_store);
3796 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3798 X509_LOOKUP *lookup;
3800 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3803 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3805 /* Clear any errors if the default directory does not exist */
3811 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3813 X509_LOOKUP *lookup;
3815 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3819 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3821 /* Clear any errors if the default file does not exist */
3827 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3830 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
3833 void SSL_set_info_callback(SSL *ssl,
3834 void (*cb) (const SSL *ssl, int type, int val))
3836 ssl->info_callback = cb;
3840 * One compiler (Diab DCC) doesn't like argument names in returned function
3843 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3846 return ssl->info_callback;
3849 void SSL_set_verify_result(SSL *ssl, long arg)
3851 ssl->verify_result = arg;
3854 long SSL_get_verify_result(const SSL *ssl)
3856 return ssl->verify_result;
3859 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3862 return sizeof(ssl->s3->client_random);
3863 if (outlen > sizeof(ssl->s3->client_random))
3864 outlen = sizeof(ssl->s3->client_random);
3865 memcpy(out, ssl->s3->client_random, outlen);
3869 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3872 return sizeof(ssl->s3->server_random);
3873 if (outlen > sizeof(ssl->s3->server_random))
3874 outlen = sizeof(ssl->s3->server_random);
3875 memcpy(out, ssl->s3->server_random, outlen);
3879 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3880 unsigned char *out, size_t outlen)
3883 return session->master_key_length;
3884 if (outlen > session->master_key_length)
3885 outlen = session->master_key_length;
3886 memcpy(out, session->master_key, outlen);
3890 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3893 if (len > sizeof(sess->master_key))
3896 memcpy(sess->master_key, in, len);
3897 sess->master_key_length = len;
3902 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3904 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
3907 void *SSL_get_ex_data(const SSL *s, int idx)
3909 return CRYPTO_get_ex_data(&s->ex_data, idx);
3912 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3914 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
3917 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3919 return CRYPTO_get_ex_data(&s->ex_data, idx);
3922 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3924 return ctx->cert_store;
3927 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3929 X509_STORE_free(ctx->cert_store);
3930 ctx->cert_store = store;
3933 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3936 X509_STORE_up_ref(store);
3937 SSL_CTX_set_cert_store(ctx, store);
3940 int SSL_want(const SSL *s)
3946 * \brief Set the callback for generating temporary DH keys.
3947 * \param ctx the SSL context.
3948 * \param dh the callback
3951 #ifndef OPENSSL_NO_DH
3952 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3953 DH *(*dh) (SSL *ssl, int is_export,
3956 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3959 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3962 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3966 #ifndef OPENSSL_NO_PSK
3967 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3969 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3970 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3973 OPENSSL_free(ctx->cert->psk_identity_hint);
3974 if (identity_hint != NULL) {
3975 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3976 if (ctx->cert->psk_identity_hint == NULL)
3979 ctx->cert->psk_identity_hint = NULL;
3983 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3988 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3989 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3992 OPENSSL_free(s->cert->psk_identity_hint);
3993 if (identity_hint != NULL) {
3994 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3995 if (s->cert->psk_identity_hint == NULL)
3998 s->cert->psk_identity_hint = NULL;
4002 const char *SSL_get_psk_identity_hint(const SSL *s)
4004 if (s == NULL || s->session == NULL)
4006 return s->session->psk_identity_hint;
4009 const char *SSL_get_psk_identity(const SSL *s)
4011 if (s == NULL || s->session == NULL)
4013 return s->session->psk_identity;
4016 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4018 s->psk_client_callback = cb;
4021 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4023 ctx->psk_client_callback = cb;
4026 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4028 s->psk_server_callback = cb;
4031 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4033 ctx->psk_server_callback = cb;
4037 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4039 s->psk_find_session_cb = cb;
4042 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4043 SSL_psk_find_session_cb_func cb)
4045 ctx->psk_find_session_cb = cb;
4048 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4050 s->psk_use_session_cb = cb;
4053 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4054 SSL_psk_use_session_cb_func cb)
4056 ctx->psk_use_session_cb = cb;
4059 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4060 void (*cb) (int write_p, int version,
4061 int content_type, const void *buf,
4062 size_t len, SSL *ssl, void *arg))
4064 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4067 void SSL_set_msg_callback(SSL *ssl,
4068 void (*cb) (int write_p, int version,
4069 int content_type, const void *buf,
4070 size_t len, SSL *ssl, void *arg))
4072 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4075 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4076 int (*cb) (SSL *ssl,
4080 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4081 (void (*)(void))cb);
4084 void SSL_set_not_resumable_session_callback(SSL *ssl,
4085 int (*cb) (SSL *ssl,
4086 int is_forward_secure))
4088 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4089 (void (*)(void))cb);
4092 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4093 size_t (*cb) (SSL *ssl, int type,
4094 size_t len, void *arg))
4096 ctx->record_padding_cb = cb;
4099 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4101 ctx->record_padding_arg = arg;
4104 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4106 return ctx->record_padding_arg;
4109 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4111 /* block size of 0 or 1 is basically no padding */
4112 if (block_size == 1)
4113 ctx->block_padding = 0;
4114 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4115 ctx->block_padding = block_size;
4121 void SSL_set_record_padding_callback(SSL *ssl,
4122 size_t (*cb) (SSL *ssl, int type,
4123 size_t len, void *arg))
4125 ssl->record_padding_cb = cb;
4128 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4130 ssl->record_padding_arg = arg;
4133 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4135 return ssl->record_padding_arg;
4138 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4140 /* block size of 0 or 1 is basically no padding */
4141 if (block_size == 1)
4142 ssl->block_padding = 0;
4143 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4144 ssl->block_padding = block_size;
4151 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4152 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4153 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4154 * Returns the newly allocated ctx;
4157 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4159 ssl_clear_hash_ctx(hash);
4160 *hash = EVP_MD_CTX_new();
4161 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4162 EVP_MD_CTX_free(*hash);
4169 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4172 EVP_MD_CTX_free(*hash);
4176 /* Retrieve handshake hashes */
4177 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4180 EVP_MD_CTX *ctx = NULL;
4181 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4182 int hashleni = EVP_MD_CTX_size(hdgst);
4185 if (hashleni < 0 || (size_t)hashleni > outlen)
4188 ctx = EVP_MD_CTX_new();
4192 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4193 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4196 *hashlen = hashleni;
4200 EVP_MD_CTX_free(ctx);
4204 int SSL_session_reused(SSL *s)
4209 int SSL_is_server(const SSL *s)
4214 #if OPENSSL_API_COMPAT < 0x10100000L
4215 void SSL_set_debug(SSL *s, int debug)
4217 /* Old function was do-nothing anyway... */
4223 void SSL_set_security_level(SSL *s, int level)
4225 s->cert->sec_level = level;
4228 int SSL_get_security_level(const SSL *s)
4230 return s->cert->sec_level;
4233 void SSL_set_security_callback(SSL *s,
4234 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4235 int op, int bits, int nid,
4236 void *other, void *ex))
4238 s->cert->sec_cb = cb;
4241 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4242 const SSL_CTX *ctx, int op,
4243 int bits, int nid, void *other,
4245 return s->cert->sec_cb;
4248 void SSL_set0_security_ex_data(SSL *s, void *ex)
4250 s->cert->sec_ex = ex;
4253 void *SSL_get0_security_ex_data(const SSL *s)
4255 return s->cert->sec_ex;
4258 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4260 ctx->cert->sec_level = level;
4263 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4265 return ctx->cert->sec_level;
4268 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4269 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4270 int op, int bits, int nid,
4271 void *other, void *ex))
4273 ctx->cert->sec_cb = cb;
4276 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4282 return ctx->cert->sec_cb;
4285 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4287 ctx->cert->sec_ex = ex;
4290 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4292 return ctx->cert->sec_ex;
4296 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4297 * can return unsigned long, instead of the generic long return value from the
4298 * control interface.
4300 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4302 return ctx->options;
4305 unsigned long SSL_get_options(const SSL *s)
4310 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4312 return ctx->options |= op;
4315 unsigned long SSL_set_options(SSL *s, unsigned long op)
4317 return s->options |= op;
4320 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4322 return ctx->options &= ~op;
4325 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4327 return s->options &= ~op;
4330 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4332 return s->verified_chain;
4335 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4337 #ifndef OPENSSL_NO_CT
4340 * Moves SCTs from the |src| stack to the |dst| stack.
4341 * The source of each SCT will be set to |origin|.
4342 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4344 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4346 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4347 sct_source_t origin)
4353 *dst = sk_SCT_new_null();
4355 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4360 while ((sct = sk_SCT_pop(src)) != NULL) {
4361 if (SCT_set_source(sct, origin) != 1)
4364 if (sk_SCT_push(*dst, sct) <= 0)
4372 sk_SCT_push(src, sct); /* Put the SCT back */
4377 * Look for data collected during ServerHello and parse if found.
4378 * Returns the number of SCTs extracted.
4380 static int ct_extract_tls_extension_scts(SSL *s)
4382 int scts_extracted = 0;
4384 if (s->ext.scts != NULL) {
4385 const unsigned char *p = s->ext.scts;
4386 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4388 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4390 SCT_LIST_free(scts);
4393 return scts_extracted;
4397 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4398 * contains an SCT X509 extension. They will be stored in |s->scts|.
4400 * - The number of SCTs extracted, assuming an OCSP response exists.
4401 * - 0 if no OCSP response exists or it contains no SCTs.
4402 * - A negative integer if an error occurs.
4404 static int ct_extract_ocsp_response_scts(SSL *s)
4406 # ifndef OPENSSL_NO_OCSP
4407 int scts_extracted = 0;
4408 const unsigned char *p;
4409 OCSP_BASICRESP *br = NULL;
4410 OCSP_RESPONSE *rsp = NULL;
4411 STACK_OF(SCT) *scts = NULL;
4414 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4417 p = s->ext.ocsp.resp;
4418 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4422 br = OCSP_response_get1_basic(rsp);
4426 for (i = 0; i < OCSP_resp_count(br); ++i) {
4427 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4433 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4435 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4436 if (scts_extracted < 0)
4440 SCT_LIST_free(scts);
4441 OCSP_BASICRESP_free(br);
4442 OCSP_RESPONSE_free(rsp);
4443 return scts_extracted;
4445 /* Behave as if no OCSP response exists */
4451 * Attempts to extract SCTs from the peer certificate.
4452 * Return the number of SCTs extracted, or a negative integer if an error
4455 static int ct_extract_x509v3_extension_scts(SSL *s)
4457 int scts_extracted = 0;
4458 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4461 STACK_OF(SCT) *scts =
4462 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4465 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4467 SCT_LIST_free(scts);
4470 return scts_extracted;
4474 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4475 * response (if it exists) and X509v3 extensions in the certificate.
4476 * Returns NULL if an error occurs.
4478 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4480 if (!s->scts_parsed) {
4481 if (ct_extract_tls_extension_scts(s) < 0 ||
4482 ct_extract_ocsp_response_scts(s) < 0 ||
4483 ct_extract_x509v3_extension_scts(s) < 0)
4493 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4494 const STACK_OF(SCT) *scts, void *unused_arg)
4499 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4500 const STACK_OF(SCT) *scts, void *unused_arg)
4502 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4505 for (i = 0; i < count; ++i) {
4506 SCT *sct = sk_SCT_value(scts, i);
4507 int status = SCT_get_validation_status(sct);
4509 if (status == SCT_VALIDATION_STATUS_VALID)
4512 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4516 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4520 * Since code exists that uses the custom extension handler for CT, look
4521 * for this and throw an error if they have already registered to use CT.
4523 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4524 TLSEXT_TYPE_signed_certificate_timestamp))
4526 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4527 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4531 if (callback != NULL) {
4533 * If we are validating CT, then we MUST accept SCTs served via OCSP
4535 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4539 s->ct_validation_callback = callback;
4540 s->ct_validation_callback_arg = arg;
4545 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4546 ssl_ct_validation_cb callback, void *arg)
4549 * Since code exists that uses the custom extension handler for CT, look for
4550 * this and throw an error if they have already registered to use CT.
4552 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4553 TLSEXT_TYPE_signed_certificate_timestamp))
4555 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4556 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4560 ctx->ct_validation_callback = callback;
4561 ctx->ct_validation_callback_arg = arg;
4565 int SSL_ct_is_enabled(const SSL *s)
4567 return s->ct_validation_callback != NULL;
4570 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4572 return ctx->ct_validation_callback != NULL;
4575 int ssl_validate_ct(SSL *s)
4578 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4580 SSL_DANE *dane = &s->dane;
4581 CT_POLICY_EVAL_CTX *ctx = NULL;
4582 const STACK_OF(SCT) *scts;
4585 * If no callback is set, the peer is anonymous, or its chain is invalid,
4586 * skip SCT validation - just return success. Applications that continue
4587 * handshakes without certificates, with unverified chains, or pinned leaf
4588 * certificates are outside the scope of the WebPKI and CT.
4590 * The above exclusions notwithstanding the vast majority of peers will
4591 * have rather ordinary certificate chains validated by typical
4592 * applications that perform certificate verification and therefore will
4593 * process SCTs when enabled.
4595 if (s->ct_validation_callback == NULL || cert == NULL ||
4596 s->verify_result != X509_V_OK ||
4597 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4601 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4602 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4604 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4605 switch (dane->mtlsa->usage) {
4606 case DANETLS_USAGE_DANE_TA:
4607 case DANETLS_USAGE_DANE_EE:
4612 ctx = CT_POLICY_EVAL_CTX_new();
4614 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4618 issuer = sk_X509_value(s->verified_chain, 1);
4619 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4620 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4621 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4622 CT_POLICY_EVAL_CTX_set_time(
4623 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4625 scts = SSL_get0_peer_scts(s);
4628 * This function returns success (> 0) only when all the SCTs are valid, 0
4629 * when some are invalid, and < 0 on various internal errors (out of
4630 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4631 * reason to abort the handshake, that decision is up to the callback.
4632 * Therefore, we error out only in the unexpected case that the return
4633 * value is negative.
4635 * XXX: One might well argue that the return value of this function is an
4636 * unfortunate design choice. Its job is only to determine the validation
4637 * status of each of the provided SCTs. So long as it correctly separates
4638 * the wheat from the chaff it should return success. Failure in this case
4639 * ought to correspond to an inability to carry out its duties.
4641 if (SCT_LIST_validate(scts, ctx) < 0) {
4642 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4646 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4648 ret = 0; /* This function returns 0 on failure */
4651 CT_POLICY_EVAL_CTX_free(ctx);
4653 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4654 * failure return code here. Also the application may wish the complete
4655 * the handshake, and then disconnect cleanly at a higher layer, after
4656 * checking the verification status of the completed connection.
4658 * We therefore force a certificate verification failure which will be
4659 * visible via SSL_get_verify_result() and cached as part of any resumed
4662 * Note: the permissive callback is for information gathering only, always
4663 * returns success, and does not affect verification status. Only the
4664 * strict callback or a custom application-specified callback can trigger
4665 * connection failure or record a verification error.
4668 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4672 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4674 switch (validation_mode) {
4676 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4678 case SSL_CT_VALIDATION_PERMISSIVE:
4679 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4680 case SSL_CT_VALIDATION_STRICT:
4681 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4685 int SSL_enable_ct(SSL *s, int validation_mode)
4687 switch (validation_mode) {
4689 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4691 case SSL_CT_VALIDATION_PERMISSIVE:
4692 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4693 case SSL_CT_VALIDATION_STRICT:
4694 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4698 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4700 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4703 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4705 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4708 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4710 CTLOG_STORE_free(ctx->ctlog_store);
4711 ctx->ctlog_store = logs;
4714 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4716 return ctx->ctlog_store;
4719 #endif /* OPENSSL_NO_CT */
4721 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4724 c->client_hello_cb = cb;
4725 c->client_hello_cb_arg = arg;
4728 int SSL_client_hello_isv2(SSL *s)
4730 if (s->clienthello == NULL)
4732 return s->clienthello->isv2;
4735 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
4737 if (s->clienthello == NULL)
4739 return s->clienthello->legacy_version;
4742 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
4744 if (s->clienthello == NULL)
4747 *out = s->clienthello->random;
4748 return SSL3_RANDOM_SIZE;
4751 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
4753 if (s->clienthello == NULL)
4756 *out = s->clienthello->session_id;
4757 return s->clienthello->session_id_len;
4760 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
4762 if (s->clienthello == NULL)
4765 *out = PACKET_data(&s->clienthello->ciphersuites);
4766 return PACKET_remaining(&s->clienthello->ciphersuites);
4769 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
4771 if (s->clienthello == NULL)
4774 *out = s->clienthello->compressions;
4775 return s->clienthello->compressions_len;
4778 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4784 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4786 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4787 ext = s->clienthello->pre_proc_exts + i;
4791 present = OPENSSL_malloc(sizeof(*present) * num);
4792 if (present == NULL)
4794 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4795 ext = s->clienthello->pre_proc_exts + i;
4797 if (ext->received_order >= num)
4799 present[ext->received_order] = ext->type;
4806 OPENSSL_free(present);
4810 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4816 if (s->clienthello == NULL)
4818 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4819 r = s->clienthello->pre_proc_exts + i;
4820 if (r->present && r->type == type) {
4822 *out = PACKET_data(&r->data);
4824 *outlen = PACKET_remaining(&r->data);
4831 int SSL_free_buffers(SSL *ssl)
4833 RECORD_LAYER *rl = &ssl->rlayer;
4835 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4838 RECORD_LAYER_release(rl);
4842 int SSL_alloc_buffers(SSL *ssl)
4844 return ssl3_setup_buffers(ssl);
4847 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4849 ctx->keylog_callback = cb;
4852 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4854 return ctx->keylog_callback;
4857 static int nss_keylog_int(const char *prefix,
4859 const uint8_t *parameter_1,
4860 size_t parameter_1_len,
4861 const uint8_t *parameter_2,
4862 size_t parameter_2_len)
4865 char *cursor = NULL;
4870 if (ssl->ctx->keylog_callback == NULL) return 1;
4873 * Our output buffer will contain the following strings, rendered with
4874 * space characters in between, terminated by a NULL character: first the
4875 * prefix, then the first parameter, then the second parameter. The
4876 * meaning of each parameter depends on the specific key material being
4877 * logged. Note that the first and second parameters are encoded in
4878 * hexadecimal, so we need a buffer that is twice their lengths.
4880 prefix_len = strlen(prefix);
4881 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4882 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4883 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4887 strcpy(cursor, prefix);
4888 cursor += prefix_len;
4891 for (i = 0; i < parameter_1_len; i++) {
4892 sprintf(cursor, "%02x", parameter_1[i]);
4897 for (i = 0; i < parameter_2_len; i++) {
4898 sprintf(cursor, "%02x", parameter_2[i]);
4903 ssl->ctx->keylog_callback(ssl, (const char *)out);
4909 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4910 const uint8_t *encrypted_premaster,
4911 size_t encrypted_premaster_len,
4912 const uint8_t *premaster,
4913 size_t premaster_len)
4915 if (encrypted_premaster_len < 8) {
4916 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4920 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4921 return nss_keylog_int("RSA",
4923 encrypted_premaster,
4929 int ssl_log_secret(SSL *ssl,
4931 const uint8_t *secret,
4934 return nss_keylog_int(label,
4936 ssl->s3->client_random,
4942 #define SSLV2_CIPHER_LEN 3
4944 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4949 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4951 if (PACKET_remaining(cipher_suites) == 0) {
4952 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4953 *al = SSL_AD_ILLEGAL_PARAMETER;
4957 if (PACKET_remaining(cipher_suites) % n != 0) {
4958 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4959 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4960 *al = SSL_AD_DECODE_ERROR;
4964 OPENSSL_free(s->s3->tmp.ciphers_raw);
4965 s->s3->tmp.ciphers_raw = NULL;
4966 s->s3->tmp.ciphers_rawlen = 0;
4969 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4970 PACKET sslv2ciphers = *cipher_suites;
4971 unsigned int leadbyte;
4975 * We store the raw ciphers list in SSLv3+ format so we need to do some
4976 * preprocessing to convert the list first. If there are any SSLv2 only
4977 * ciphersuites with a non-zero leading byte then we are going to
4978 * slightly over allocate because we won't store those. But that isn't a
4981 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4982 s->s3->tmp.ciphers_raw = raw;
4984 *al = SSL_AD_INTERNAL_ERROR;
4987 for (s->s3->tmp.ciphers_rawlen = 0;
4988 PACKET_remaining(&sslv2ciphers) > 0;
4989 raw += TLS_CIPHER_LEN) {
4990 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4992 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4995 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4996 *al = SSL_AD_DECODE_ERROR;
4997 OPENSSL_free(s->s3->tmp.ciphers_raw);
4998 s->s3->tmp.ciphers_raw = NULL;
4999 s->s3->tmp.ciphers_rawlen = 0;
5003 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5005 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5006 &s->s3->tmp.ciphers_rawlen)) {
5007 *al = SSL_AD_INTERNAL_ERROR;
5015 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5016 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5017 STACK_OF(SSL_CIPHER) **scsvs)
5022 if (!PACKET_buf_init(&pkt, bytes, len))
5024 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5027 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5028 STACK_OF(SSL_CIPHER) **skp,
5029 STACK_OF(SSL_CIPHER) **scsvs_out,
5030 int sslv2format, int *al)
5032 const SSL_CIPHER *c;
5033 STACK_OF(SSL_CIPHER) *sk = NULL;
5034 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5036 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5037 unsigned char cipher[SSLV2_CIPHER_LEN];
5039 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5041 if (PACKET_remaining(cipher_suites) == 0) {
5042 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5043 *al = SSL_AD_ILLEGAL_PARAMETER;
5047 if (PACKET_remaining(cipher_suites) % n != 0) {
5048 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5049 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5050 *al = SSL_AD_DECODE_ERROR;
5054 sk = sk_SSL_CIPHER_new_null();
5055 scsvs = sk_SSL_CIPHER_new_null();
5056 if (sk == NULL || scsvs == NULL) {
5057 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5058 *al = SSL_AD_INTERNAL_ERROR;
5062 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5064 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5065 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5066 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5068 if (sslv2format && cipher[0] != '\0')
5071 /* For SSLv2-compat, ignore leading 0-byte. */
5072 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5074 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5075 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5076 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5077 *al = SSL_AD_INTERNAL_ERROR;
5082 if (PACKET_remaining(cipher_suites) > 0) {
5083 *al = SSL_AD_DECODE_ERROR;
5084 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5091 sk_SSL_CIPHER_free(sk);
5092 if (scsvs_out != NULL)
5095 sk_SSL_CIPHER_free(scsvs);
5098 sk_SSL_CIPHER_free(sk);
5099 sk_SSL_CIPHER_free(scsvs);
5103 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5105 ctx->max_early_data = max_early_data;
5110 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5112 return ctx->max_early_data;
5115 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5117 s->max_early_data = max_early_data;
5122 uint32_t SSL_get_max_early_data(const SSL *s)
5124 return s->max_early_data;
5127 int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5129 if (s->drbg != NULL) {
5131 * Currently, it's the duty of the caller to serialize the generate
5132 * requests to the DRBG. So formally we have to check whether
5133 * s->drbg->lock != NULL and take the lock if this is the case.
5134 * However, this DRBG is unique to a given SSL object, and we already
5135 * require that SSL objects are only accessed by a single thread at
5136 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5137 * no risk that this DRBG is accessed by a child DRBG in parallel
5138 * for reseeding. As such, we can rely on the application's
5139 * serialization of SSL accesses for the needed concurrency protection
5142 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5144 return RAND_bytes(rnd, (int)size);