2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/lhash.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include "internal/cryptlib.h"
24 #include "internal/rand.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 dane_final(&to->dane);
164 to->dane.flags = from->dane.flags;
165 to->dane.dctx = &to->ctx->dane;
166 to->dane.trecs = sk_danetls_record_new_null();
168 if (to->dane.trecs == NULL) {
169 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
173 num = sk_danetls_record_num(from->dane.trecs);
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;
541 if (s->renegotiate) {
542 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
546 ossl_statem_clear(s);
548 s->version = s->method->version;
549 s->client_version = s->version;
550 s->rwstate = SSL_NOTHING;
552 BUF_MEM_free(s->init_buf);
557 s->key_update = SSL_KEY_UPDATE_NONE;
559 /* Reset DANE verification result state */
562 X509_free(s->dane.mcert);
563 s->dane.mcert = NULL;
564 s->dane.mtlsa = NULL;
566 /* Clear the verification result peername */
567 X509_VERIFY_PARAM_move_peername(s->param, NULL);
570 * Check to see if we were changed into a different method, if so, revert
573 if (s->method != s->ctx->method) {
574 s->method->ssl_free(s);
575 s->method = s->ctx->method;
576 if (!s->method->ssl_new(s))
579 if (!s->method->ssl_clear(s))
583 RECORD_LAYER_clear(&s->rlayer);
588 /** Used to change an SSL_CTXs default SSL method type */
589 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
591 STACK_OF(SSL_CIPHER) *sk;
595 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
596 &(ctx->cipher_list_by_id),
597 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
598 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
599 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
605 SSL *SSL_new(SSL_CTX *ctx)
610 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
613 if (ctx->method == NULL) {
614 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
618 s = OPENSSL_zalloc(sizeof(*s));
622 s->lock = CRYPTO_THREAD_lock_new();
627 * If not using the standard RAND (say for fuzzing), then don't use a
630 if (RAND_get_rand_method() == RAND_OpenSSL()) {
631 s->drbg = RAND_DRBG_new(NID_aes_128_ctr, RAND_DRBG_FLAG_CTR_USE_DF,
632 RAND_DRBG_get0_global());
633 if (s->drbg == NULL) {
634 CRYPTO_THREAD_lock_free(s->lock);
639 RECORD_LAYER_init(&s->rlayer, s);
641 s->options = ctx->options;
642 s->dane.flags = ctx->dane.flags;
643 s->min_proto_version = ctx->min_proto_version;
644 s->max_proto_version = ctx->max_proto_version;
646 s->max_cert_list = ctx->max_cert_list;
648 s->max_early_data = ctx->max_early_data;
651 * Earlier library versions used to copy the pointer to the CERT, not
652 * its contents; only when setting new parameters for the per-SSL
653 * copy, ssl_cert_new would be called (and the direct reference to
654 * the per-SSL_CTX settings would be lost, but those still were
655 * indirectly accessed for various purposes, and for that reason they
656 * used to be known as s->ctx->default_cert). Now we don't look at the
657 * SSL_CTX's CERT after having duplicated it once.
659 s->cert = ssl_cert_dup(ctx->cert);
663 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
664 s->msg_callback = ctx->msg_callback;
665 s->msg_callback_arg = ctx->msg_callback_arg;
666 s->verify_mode = ctx->verify_mode;
667 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
668 s->record_padding_cb = ctx->record_padding_cb;
669 s->record_padding_arg = ctx->record_padding_arg;
670 s->block_padding = ctx->block_padding;
671 s->sid_ctx_length = ctx->sid_ctx_length;
672 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
674 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
675 s->verify_callback = ctx->default_verify_callback;
676 s->generate_session_id = ctx->generate_session_id;
678 s->param = X509_VERIFY_PARAM_new();
679 if (s->param == NULL)
681 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
682 s->quiet_shutdown = ctx->quiet_shutdown;
683 s->max_send_fragment = ctx->max_send_fragment;
684 s->split_send_fragment = ctx->split_send_fragment;
685 s->max_pipelines = ctx->max_pipelines;
686 if (s->max_pipelines > 1)
687 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
688 if (ctx->default_read_buf_len > 0)
689 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
694 s->ext.debug_arg = NULL;
695 s->ext.ticket_expected = 0;
696 s->ext.status_type = ctx->ext.status_type;
697 s->ext.status_expected = 0;
698 s->ext.ocsp.ids = NULL;
699 s->ext.ocsp.exts = NULL;
700 s->ext.ocsp.resp = NULL;
701 s->ext.ocsp.resp_len = 0;
703 s->session_ctx = ctx;
704 #ifndef OPENSSL_NO_EC
705 if (ctx->ext.ecpointformats) {
706 s->ext.ecpointformats =
707 OPENSSL_memdup(ctx->ext.ecpointformats,
708 ctx->ext.ecpointformats_len);
709 if (!s->ext.ecpointformats)
711 s->ext.ecpointformats_len =
712 ctx->ext.ecpointformats_len;
714 if (ctx->ext.supportedgroups) {
715 s->ext.supportedgroups =
716 OPENSSL_memdup(ctx->ext.supportedgroups,
717 ctx->ext.supportedgroups_len);
718 if (!s->ext.supportedgroups)
720 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
723 #ifndef OPENSSL_NO_NEXTPROTONEG
727 if (s->ctx->ext.alpn) {
728 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
729 if (s->ext.alpn == NULL)
731 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
732 s->ext.alpn_len = s->ctx->ext.alpn_len;
735 s->verified_chain = NULL;
736 s->verify_result = X509_V_OK;
738 s->default_passwd_callback = ctx->default_passwd_callback;
739 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
741 s->method = ctx->method;
743 s->key_update = SSL_KEY_UPDATE_NONE;
745 if (!s->method->ssl_new(s))
748 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
753 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
756 #ifndef OPENSSL_NO_PSK
757 s->psk_client_callback = ctx->psk_client_callback;
758 s->psk_server_callback = ctx->psk_server_callback;
760 s->psk_find_session_cb = ctx->psk_find_session_cb;
761 s->psk_use_session_cb = ctx->psk_use_session_cb;
765 #ifndef OPENSSL_NO_CT
766 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
767 ctx->ct_validation_callback_arg))
774 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
778 int SSL_is_dtls(const SSL *s)
780 return SSL_IS_DTLS(s) ? 1 : 0;
783 int SSL_up_ref(SSL *s)
787 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
790 REF_PRINT_COUNT("SSL", s);
791 REF_ASSERT_ISNT(i < 2);
792 return ((i > 1) ? 1 : 0);
795 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
796 unsigned int sid_ctx_len)
798 if (sid_ctx_len > sizeof ctx->sid_ctx) {
799 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
800 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
803 ctx->sid_ctx_length = sid_ctx_len;
804 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
809 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
810 unsigned int sid_ctx_len)
812 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
813 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
814 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
817 ssl->sid_ctx_length = sid_ctx_len;
818 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
823 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
825 CRYPTO_THREAD_write_lock(ctx->lock);
826 ctx->generate_session_id = cb;
827 CRYPTO_THREAD_unlock(ctx->lock);
831 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
833 CRYPTO_THREAD_write_lock(ssl->lock);
834 ssl->generate_session_id = cb;
835 CRYPTO_THREAD_unlock(ssl->lock);
839 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
843 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
844 * we can "construct" a session to give us the desired check - i.e. to
845 * find if there's a session in the hash table that would conflict with
846 * any new session built out of this id/id_len and the ssl_version in use
851 if (id_len > sizeof r.session_id)
854 r.ssl_version = ssl->version;
855 r.session_id_length = id_len;
856 memcpy(r.session_id, id, id_len);
858 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
859 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
860 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
864 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
866 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
869 int SSL_set_purpose(SSL *s, int purpose)
871 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
874 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
876 return X509_VERIFY_PARAM_set_trust(s->param, trust);
879 int SSL_set_trust(SSL *s, int trust)
881 return X509_VERIFY_PARAM_set_trust(s->param, trust);
884 int SSL_set1_host(SSL *s, const char *hostname)
886 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
889 int SSL_add1_host(SSL *s, const char *hostname)
891 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
894 void SSL_set_hostflags(SSL *s, unsigned int flags)
896 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
899 const char *SSL_get0_peername(SSL *s)
901 return X509_VERIFY_PARAM_get0_peername(s->param);
904 int SSL_CTX_dane_enable(SSL_CTX *ctx)
906 return dane_ctx_enable(&ctx->dane);
909 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
911 unsigned long orig = ctx->dane.flags;
913 ctx->dane.flags |= flags;
917 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
919 unsigned long orig = ctx->dane.flags;
921 ctx->dane.flags &= ~flags;
925 int SSL_dane_enable(SSL *s, const char *basedomain)
927 SSL_DANE *dane = &s->dane;
929 if (s->ctx->dane.mdmax == 0) {
930 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
933 if (dane->trecs != NULL) {
934 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
939 * Default SNI name. This rejects empty names, while set1_host below
940 * accepts them and disables host name checks. To avoid side-effects with
941 * invalid input, set the SNI name first.
943 if (s->ext.hostname == NULL) {
944 if (!SSL_set_tlsext_host_name(s, basedomain)) {
945 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
950 /* Primary RFC6125 reference identifier */
951 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
952 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
958 dane->dctx = &s->ctx->dane;
959 dane->trecs = sk_danetls_record_new_null();
961 if (dane->trecs == NULL) {
962 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
968 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
970 unsigned long orig = ssl->dane.flags;
972 ssl->dane.flags |= flags;
976 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
978 unsigned long orig = ssl->dane.flags;
980 ssl->dane.flags &= ~flags;
984 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
986 SSL_DANE *dane = &s->dane;
988 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
992 *mcert = dane->mcert;
994 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
999 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1000 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1002 SSL_DANE *dane = &s->dane;
1004 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1008 *usage = dane->mtlsa->usage;
1010 *selector = dane->mtlsa->selector;
1012 *mtype = dane->mtlsa->mtype;
1014 *data = dane->mtlsa->data;
1016 *dlen = dane->mtlsa->dlen;
1021 SSL_DANE *SSL_get0_dane(SSL *s)
1026 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1027 uint8_t mtype, unsigned char *data, size_t dlen)
1029 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1032 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1035 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1038 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1040 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1043 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1045 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1048 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1053 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1058 void SSL_certs_clear(SSL *s)
1060 ssl_cert_clear_certs(s->cert);
1063 void SSL_free(SSL *s)
1070 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1071 REF_PRINT_COUNT("SSL", s);
1074 REF_ASSERT_ISNT(i < 0);
1076 X509_VERIFY_PARAM_free(s->param);
1077 dane_final(&s->dane);
1078 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1080 /* Ignore return value */
1081 ssl_free_wbio_buffer(s);
1083 BIO_free_all(s->wbio);
1084 BIO_free_all(s->rbio);
1086 BUF_MEM_free(s->init_buf);
1088 /* add extra stuff */
1089 sk_SSL_CIPHER_free(s->cipher_list);
1090 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1092 /* Make the next call work :-) */
1093 if (s->session != NULL) {
1094 ssl_clear_bad_session(s);
1095 SSL_SESSION_free(s->session);
1097 SSL_SESSION_free(s->psksession);
1101 ssl_cert_free(s->cert);
1102 /* Free up if allocated */
1104 OPENSSL_free(s->ext.hostname);
1105 SSL_CTX_free(s->session_ctx);
1106 #ifndef OPENSSL_NO_EC
1107 OPENSSL_free(s->ext.ecpointformats);
1108 OPENSSL_free(s->ext.supportedgroups);
1109 #endif /* OPENSSL_NO_EC */
1110 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1111 #ifndef OPENSSL_NO_OCSP
1112 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1114 #ifndef OPENSSL_NO_CT
1115 SCT_LIST_free(s->scts);
1116 OPENSSL_free(s->ext.scts);
1118 OPENSSL_free(s->ext.ocsp.resp);
1119 OPENSSL_free(s->ext.alpn);
1120 OPENSSL_free(s->ext.tls13_cookie);
1121 OPENSSL_free(s->clienthello);
1123 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1125 sk_X509_pop_free(s->verified_chain, X509_free);
1127 if (s->method != NULL)
1128 s->method->ssl_free(s);
1130 RECORD_LAYER_release(&s->rlayer);
1132 SSL_CTX_free(s->ctx);
1134 ASYNC_WAIT_CTX_free(s->waitctx);
1136 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1137 OPENSSL_free(s->ext.npn);
1140 #ifndef OPENSSL_NO_SRTP
1141 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1144 RAND_DRBG_free(s->drbg);
1145 CRYPTO_THREAD_lock_free(s->lock);
1150 void SSL_set0_rbio(SSL *s, BIO *rbio)
1152 BIO_free_all(s->rbio);
1156 void SSL_set0_wbio(SSL *s, BIO *wbio)
1159 * If the output buffering BIO is still in place, remove it
1161 if (s->bbio != NULL)
1162 s->wbio = BIO_pop(s->wbio);
1164 BIO_free_all(s->wbio);
1167 /* Re-attach |bbio| to the new |wbio|. */
1168 if (s->bbio != NULL)
1169 s->wbio = BIO_push(s->bbio, s->wbio);
1172 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1175 * For historical reasons, this function has many different cases in
1176 * ownership handling.
1179 /* If nothing has changed, do nothing */
1180 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1184 * If the two arguments are equal then one fewer reference is granted by the
1185 * caller than we want to take
1187 if (rbio != NULL && rbio == wbio)
1191 * If only the wbio is changed only adopt one reference.
1193 if (rbio == SSL_get_rbio(s)) {
1194 SSL_set0_wbio(s, wbio);
1198 * There is an asymmetry here for historical reasons. If only the rbio is
1199 * changed AND the rbio and wbio were originally different, then we only
1200 * adopt one reference.
1202 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1203 SSL_set0_rbio(s, rbio);
1207 /* Otherwise, adopt both references. */
1208 SSL_set0_rbio(s, rbio);
1209 SSL_set0_wbio(s, wbio);
1212 BIO *SSL_get_rbio(const SSL *s)
1217 BIO *SSL_get_wbio(const SSL *s)
1219 if (s->bbio != NULL) {
1221 * If |bbio| is active, the true caller-configured BIO is its
1224 return BIO_next(s->bbio);
1229 int SSL_get_fd(const SSL *s)
1231 return SSL_get_rfd(s);
1234 int SSL_get_rfd(const SSL *s)
1239 b = SSL_get_rbio(s);
1240 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1242 BIO_get_fd(r, &ret);
1246 int SSL_get_wfd(const SSL *s)
1251 b = SSL_get_wbio(s);
1252 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1254 BIO_get_fd(r, &ret);
1258 #ifndef OPENSSL_NO_SOCK
1259 int SSL_set_fd(SSL *s, int fd)
1264 bio = BIO_new(BIO_s_socket());
1267 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1270 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1271 SSL_set_bio(s, bio, bio);
1277 int SSL_set_wfd(SSL *s, int fd)
1279 BIO *rbio = SSL_get_rbio(s);
1281 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1282 || (int)BIO_get_fd(rbio, NULL) != fd) {
1283 BIO *bio = BIO_new(BIO_s_socket());
1286 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1289 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1290 SSL_set0_wbio(s, bio);
1293 SSL_set0_wbio(s, rbio);
1298 int SSL_set_rfd(SSL *s, int fd)
1300 BIO *wbio = SSL_get_wbio(s);
1302 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1303 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1304 BIO *bio = BIO_new(BIO_s_socket());
1307 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1310 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1311 SSL_set0_rbio(s, bio);
1314 SSL_set0_rbio(s, wbio);
1321 /* return length of latest Finished message we sent, copy to 'buf' */
1322 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1326 if (s->s3 != NULL) {
1327 ret = s->s3->tmp.finish_md_len;
1330 memcpy(buf, s->s3->tmp.finish_md, count);
1335 /* return length of latest Finished message we expected, copy to 'buf' */
1336 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1340 if (s->s3 != NULL) {
1341 ret = s->s3->tmp.peer_finish_md_len;
1344 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1349 int SSL_get_verify_mode(const SSL *s)
1351 return (s->verify_mode);
1354 int SSL_get_verify_depth(const SSL *s)
1356 return X509_VERIFY_PARAM_get_depth(s->param);
1359 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1360 return (s->verify_callback);
1363 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1365 return (ctx->verify_mode);
1368 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1370 return X509_VERIFY_PARAM_get_depth(ctx->param);
1373 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1374 return (ctx->default_verify_callback);
1377 void SSL_set_verify(SSL *s, int mode,
1378 int (*callback) (int ok, X509_STORE_CTX *ctx))
1380 s->verify_mode = mode;
1381 if (callback != NULL)
1382 s->verify_callback = callback;
1385 void SSL_set_verify_depth(SSL *s, int depth)
1387 X509_VERIFY_PARAM_set_depth(s->param, depth);
1390 void SSL_set_read_ahead(SSL *s, int yes)
1392 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1395 int SSL_get_read_ahead(const SSL *s)
1397 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1400 int SSL_pending(const SSL *s)
1402 size_t pending = s->method->ssl_pending(s);
1405 * SSL_pending cannot work properly if read-ahead is enabled
1406 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1407 * impossible to fix since SSL_pending cannot report errors that may be
1408 * observed while scanning the new data. (Note that SSL_pending() is
1409 * often used as a boolean value, so we'd better not return -1.)
1411 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1412 * we just return INT_MAX.
1414 return pending < INT_MAX ? (int)pending : INT_MAX;
1417 int SSL_has_pending(const SSL *s)
1420 * Similar to SSL_pending() but returns a 1 to indicate that we have
1421 * unprocessed data available or 0 otherwise (as opposed to the number of
1422 * bytes available). Unlike SSL_pending() this will take into account
1423 * read_ahead data. A 1 return simply indicates that we have unprocessed
1424 * data. That data may not result in any application data, or we may fail
1425 * to parse the records for some reason.
1427 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1430 return RECORD_LAYER_read_pending(&s->rlayer);
1433 X509 *SSL_get_peer_certificate(const SSL *s)
1437 if ((s == NULL) || (s->session == NULL))
1440 r = s->session->peer;
1450 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1454 if ((s == NULL) || (s->session == NULL))
1457 r = s->session->peer_chain;
1460 * If we are a client, cert_chain includes the peer's own certificate; if
1461 * we are a server, it does not.
1468 * Now in theory, since the calling process own 't' it should be safe to
1469 * modify. We need to be able to read f without being hassled
1471 int SSL_copy_session_id(SSL *t, const SSL *f)
1474 /* Do we need to to SSL locking? */
1475 if (!SSL_set_session(t, SSL_get_session(f))) {
1480 * what if we are setup for one protocol version but want to talk another
1482 if (t->method != f->method) {
1483 t->method->ssl_free(t);
1484 t->method = f->method;
1485 if (t->method->ssl_new(t) == 0)
1489 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1490 ssl_cert_free(t->cert);
1492 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1499 /* Fix this so it checks all the valid key/cert options */
1500 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1502 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1503 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1506 if (ctx->cert->key->privatekey == NULL) {
1507 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1510 return (X509_check_private_key
1511 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1514 /* Fix this function so that it takes an optional type parameter */
1515 int SSL_check_private_key(const SSL *ssl)
1518 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1521 if (ssl->cert->key->x509 == NULL) {
1522 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1525 if (ssl->cert->key->privatekey == NULL) {
1526 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1529 return (X509_check_private_key(ssl->cert->key->x509,
1530 ssl->cert->key->privatekey));
1533 int SSL_waiting_for_async(SSL *s)
1541 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1543 ASYNC_WAIT_CTX *ctx = s->waitctx;
1547 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1550 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1551 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1553 ASYNC_WAIT_CTX *ctx = s->waitctx;
1557 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1561 int SSL_accept(SSL *s)
1563 if (s->handshake_func == NULL) {
1564 /* Not properly initialized yet */
1565 SSL_set_accept_state(s);
1568 return SSL_do_handshake(s);
1571 int SSL_connect(SSL *s)
1573 if (s->handshake_func == NULL) {
1574 /* Not properly initialized yet */
1575 SSL_set_connect_state(s);
1578 return SSL_do_handshake(s);
1581 long SSL_get_default_timeout(const SSL *s)
1583 return (s->method->get_timeout());
1586 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1587 int (*func) (void *))
1590 if (s->waitctx == NULL) {
1591 s->waitctx = ASYNC_WAIT_CTX_new();
1592 if (s->waitctx == NULL)
1595 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1596 sizeof(struct ssl_async_args))) {
1598 s->rwstate = SSL_NOTHING;
1599 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1602 s->rwstate = SSL_ASYNC_PAUSED;
1605 s->rwstate = SSL_ASYNC_NO_JOBS;
1611 s->rwstate = SSL_NOTHING;
1612 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1613 /* Shouldn't happen */
1618 static int ssl_io_intern(void *vargs)
1620 struct ssl_async_args *args;
1625 args = (struct ssl_async_args *)vargs;
1629 switch (args->type) {
1631 return args->f.func_read(s, buf, num, &s->asyncrw);
1633 return args->f.func_write(s, buf, num, &s->asyncrw);
1635 return args->f.func_other(s);
1640 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1642 if (s->handshake_func == NULL) {
1643 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1647 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1648 s->rwstate = SSL_NOTHING;
1652 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1653 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1654 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1658 * If we are a client and haven't received the ServerHello etc then we
1661 ossl_statem_check_finish_init(s, 0);
1663 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1664 struct ssl_async_args args;
1670 args.type = READFUNC;
1671 args.f.func_read = s->method->ssl_read;
1673 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1674 *readbytes = s->asyncrw;
1677 return s->method->ssl_read(s, buf, num, readbytes);
1681 int SSL_read(SSL *s, void *buf, int num)
1687 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1691 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1694 * The cast is safe here because ret should be <= INT_MAX because num is
1698 ret = (int)readbytes;
1703 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1705 int ret = ssl_read_internal(s, buf, num, readbytes);
1712 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1717 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1718 return SSL_READ_EARLY_DATA_ERROR;
1721 switch (s->early_data_state) {
1722 case SSL_EARLY_DATA_NONE:
1723 if (!SSL_in_before(s)) {
1724 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1725 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1726 return SSL_READ_EARLY_DATA_ERROR;
1730 case SSL_EARLY_DATA_ACCEPT_RETRY:
1731 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1732 ret = SSL_accept(s);
1735 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1736 return SSL_READ_EARLY_DATA_ERROR;
1740 case SSL_EARLY_DATA_READ_RETRY:
1741 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1742 s->early_data_state = SSL_EARLY_DATA_READING;
1743 ret = SSL_read_ex(s, buf, num, readbytes);
1745 * State machine will update early_data_state to
1746 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1749 if (ret > 0 || (ret <= 0 && s->early_data_state
1750 != SSL_EARLY_DATA_FINISHED_READING)) {
1751 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1752 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1753 : SSL_READ_EARLY_DATA_ERROR;
1756 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1759 return SSL_READ_EARLY_DATA_FINISH;
1762 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1763 return SSL_READ_EARLY_DATA_ERROR;
1767 int SSL_get_early_data_status(const SSL *s)
1769 return s->ext.early_data;
1772 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1774 if (s->handshake_func == NULL) {
1775 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1779 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1782 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1783 struct ssl_async_args args;
1789 args.type = READFUNC;
1790 args.f.func_read = s->method->ssl_peek;
1792 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1793 *readbytes = s->asyncrw;
1796 return s->method->ssl_peek(s, buf, num, readbytes);
1800 int SSL_peek(SSL *s, void *buf, int num)
1806 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1810 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1813 * The cast is safe here because ret should be <= INT_MAX because num is
1817 ret = (int)readbytes;
1823 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1825 int ret = ssl_peek_internal(s, buf, num, readbytes);
1832 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1834 if (s->handshake_func == NULL) {
1835 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1839 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1840 s->rwstate = SSL_NOTHING;
1841 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1845 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1846 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1847 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1848 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1851 /* If we are a client and haven't sent the Finished we better do that */
1852 ossl_statem_check_finish_init(s, 1);
1854 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1856 struct ssl_async_args args;
1859 args.buf = (void *)buf;
1861 args.type = WRITEFUNC;
1862 args.f.func_write = s->method->ssl_write;
1864 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1865 *written = s->asyncrw;
1868 return s->method->ssl_write(s, buf, num, written);
1872 int SSL_write(SSL *s, const void *buf, int num)
1878 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1882 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1885 * The cast is safe here because ret should be <= INT_MAX because num is
1894 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1896 int ret = ssl_write_internal(s, buf, num, written);
1903 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1905 int ret, early_data_state;
1907 switch (s->early_data_state) {
1908 case SSL_EARLY_DATA_NONE:
1910 || !SSL_in_before(s)
1911 || s->session == NULL
1912 || s->session->ext.max_early_data == 0) {
1913 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1914 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1919 case SSL_EARLY_DATA_CONNECT_RETRY:
1920 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1921 ret = SSL_connect(s);
1924 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1929 case SSL_EARLY_DATA_WRITE_RETRY:
1930 s->early_data_state = SSL_EARLY_DATA_WRITING;
1931 ret = SSL_write_ex(s, buf, num, written);
1932 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1935 case SSL_EARLY_DATA_FINISHED_READING:
1936 case SSL_EARLY_DATA_READ_RETRY:
1937 early_data_state = s->early_data_state;
1938 /* We are a server writing to an unauthenticated client */
1939 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1940 ret = SSL_write_ex(s, buf, num, written);
1941 s->early_data_state = early_data_state;
1945 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1950 int SSL_shutdown(SSL *s)
1953 * Note that this function behaves differently from what one might
1954 * expect. Return values are 0 for no success (yet), 1 for success; but
1955 * calling it once is usually not enough, even if blocking I/O is used
1956 * (see ssl3_shutdown).
1959 if (s->handshake_func == NULL) {
1960 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1964 if (!SSL_in_init(s)) {
1965 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1966 struct ssl_async_args args;
1969 args.type = OTHERFUNC;
1970 args.f.func_other = s->method->ssl_shutdown;
1972 return ssl_start_async_job(s, &args, ssl_io_intern);
1974 return s->method->ssl_shutdown(s);
1977 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1982 int SSL_key_update(SSL *s, int updatetype)
1985 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1986 * negotiated, and that it is appropriate to call SSL_key_update() instead
1987 * of SSL_renegotiate().
1989 if (!SSL_IS_TLS13(s)) {
1990 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
1994 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
1995 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
1996 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2000 if (!SSL_is_init_finished(s)) {
2001 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2005 ossl_statem_set_in_init(s, 1);
2006 s->key_update = updatetype;
2010 int SSL_get_key_update_type(SSL *s)
2012 return s->key_update;
2015 int SSL_renegotiate(SSL *s)
2017 if (SSL_IS_TLS13(s)) {
2018 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2022 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2023 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2030 return (s->method->ssl_renegotiate(s));
2033 int SSL_renegotiate_abbreviated(SSL *s)
2035 if (SSL_IS_TLS13(s)) {
2036 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2040 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2041 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2048 return (s->method->ssl_renegotiate(s));
2051 int SSL_renegotiate_pending(SSL *s)
2054 * becomes true when negotiation is requested; false again once a
2055 * handshake has finished
2057 return (s->renegotiate != 0);
2060 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2065 case SSL_CTRL_GET_READ_AHEAD:
2066 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2067 case SSL_CTRL_SET_READ_AHEAD:
2068 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2069 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2072 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2073 s->msg_callback_arg = parg;
2077 return (s->mode |= larg);
2078 case SSL_CTRL_CLEAR_MODE:
2079 return (s->mode &= ~larg);
2080 case SSL_CTRL_GET_MAX_CERT_LIST:
2081 return (long)(s->max_cert_list);
2082 case SSL_CTRL_SET_MAX_CERT_LIST:
2085 l = (long)s->max_cert_list;
2086 s->max_cert_list = (size_t)larg;
2088 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2089 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2091 s->max_send_fragment = larg;
2092 if (s->max_send_fragment < s->split_send_fragment)
2093 s->split_send_fragment = s->max_send_fragment;
2095 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2096 if ((size_t)larg > s->max_send_fragment || larg == 0)
2098 s->split_send_fragment = larg;
2100 case SSL_CTRL_SET_MAX_PIPELINES:
2101 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2103 s->max_pipelines = larg;
2105 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2107 case SSL_CTRL_GET_RI_SUPPORT:
2109 return s->s3->send_connection_binding;
2112 case SSL_CTRL_CERT_FLAGS:
2113 return (s->cert->cert_flags |= larg);
2114 case SSL_CTRL_CLEAR_CERT_FLAGS:
2115 return (s->cert->cert_flags &= ~larg);
2117 case SSL_CTRL_GET_RAW_CIPHERLIST:
2119 if (s->s3->tmp.ciphers_raw == NULL)
2121 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2122 return (int)s->s3->tmp.ciphers_rawlen;
2124 return TLS_CIPHER_LEN;
2126 case SSL_CTRL_GET_EXTMS_SUPPORT:
2127 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2129 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2133 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2134 return ssl_check_allowed_versions(larg, s->max_proto_version)
2135 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2136 &s->min_proto_version);
2137 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2138 return ssl_check_allowed_versions(s->min_proto_version, larg)
2139 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2140 &s->max_proto_version);
2142 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2146 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2149 case SSL_CTRL_SET_MSG_CALLBACK:
2150 s->msg_callback = (void (*)
2151 (int write_p, int version, int content_type,
2152 const void *buf, size_t len, SSL *ssl,
2157 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2161 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2163 return ctx->sessions;
2166 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2169 /* For some cases with ctx == NULL perform syntax checks */
2172 #ifndef OPENSSL_NO_EC
2173 case SSL_CTRL_SET_GROUPS_LIST:
2174 return tls1_set_groups_list(NULL, NULL, parg);
2176 case SSL_CTRL_SET_SIGALGS_LIST:
2177 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2178 return tls1_set_sigalgs_list(NULL, parg, 0);
2185 case SSL_CTRL_GET_READ_AHEAD:
2186 return (ctx->read_ahead);
2187 case SSL_CTRL_SET_READ_AHEAD:
2188 l = ctx->read_ahead;
2189 ctx->read_ahead = larg;
2192 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2193 ctx->msg_callback_arg = parg;
2196 case SSL_CTRL_GET_MAX_CERT_LIST:
2197 return (long)(ctx->max_cert_list);
2198 case SSL_CTRL_SET_MAX_CERT_LIST:
2201 l = (long)ctx->max_cert_list;
2202 ctx->max_cert_list = (size_t)larg;
2205 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2208 l = (long)ctx->session_cache_size;
2209 ctx->session_cache_size = (size_t)larg;
2211 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2212 return (long)(ctx->session_cache_size);
2213 case SSL_CTRL_SET_SESS_CACHE_MODE:
2214 l = ctx->session_cache_mode;
2215 ctx->session_cache_mode = larg;
2217 case SSL_CTRL_GET_SESS_CACHE_MODE:
2218 return (ctx->session_cache_mode);
2220 case SSL_CTRL_SESS_NUMBER:
2221 return (lh_SSL_SESSION_num_items(ctx->sessions));
2222 case SSL_CTRL_SESS_CONNECT:
2223 return (ctx->stats.sess_connect);
2224 case SSL_CTRL_SESS_CONNECT_GOOD:
2225 return (ctx->stats.sess_connect_good);
2226 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2227 return (ctx->stats.sess_connect_renegotiate);
2228 case SSL_CTRL_SESS_ACCEPT:
2229 return (ctx->stats.sess_accept);
2230 case SSL_CTRL_SESS_ACCEPT_GOOD:
2231 return (ctx->stats.sess_accept_good);
2232 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2233 return (ctx->stats.sess_accept_renegotiate);
2234 case SSL_CTRL_SESS_HIT:
2235 return (ctx->stats.sess_hit);
2236 case SSL_CTRL_SESS_CB_HIT:
2237 return (ctx->stats.sess_cb_hit);
2238 case SSL_CTRL_SESS_MISSES:
2239 return (ctx->stats.sess_miss);
2240 case SSL_CTRL_SESS_TIMEOUTS:
2241 return (ctx->stats.sess_timeout);
2242 case SSL_CTRL_SESS_CACHE_FULL:
2243 return (ctx->stats.sess_cache_full);
2245 return (ctx->mode |= larg);
2246 case SSL_CTRL_CLEAR_MODE:
2247 return (ctx->mode &= ~larg);
2248 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2249 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2251 ctx->max_send_fragment = larg;
2252 if (ctx->max_send_fragment < ctx->split_send_fragment)
2253 ctx->split_send_fragment = ctx->max_send_fragment;
2255 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2256 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2258 ctx->split_send_fragment = larg;
2260 case SSL_CTRL_SET_MAX_PIPELINES:
2261 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2263 ctx->max_pipelines = larg;
2265 case SSL_CTRL_CERT_FLAGS:
2266 return (ctx->cert->cert_flags |= larg);
2267 case SSL_CTRL_CLEAR_CERT_FLAGS:
2268 return (ctx->cert->cert_flags &= ~larg);
2269 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2270 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2271 && ssl_set_version_bound(ctx->method->version, (int)larg,
2272 &ctx->min_proto_version);
2273 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2274 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2275 && ssl_set_version_bound(ctx->method->version, (int)larg,
2276 &ctx->max_proto_version);
2278 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2282 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2285 case SSL_CTRL_SET_MSG_CALLBACK:
2286 ctx->msg_callback = (void (*)
2287 (int write_p, int version, int content_type,
2288 const void *buf, size_t len, SSL *ssl,
2293 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2297 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2306 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2307 const SSL_CIPHER *const *bp)
2309 if ((*ap)->id > (*bp)->id)
2311 if ((*ap)->id < (*bp)->id)
2316 /** return a STACK of the ciphers available for the SSL and in order of
2318 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2321 if (s->cipher_list != NULL) {
2322 return (s->cipher_list);
2323 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2324 return (s->ctx->cipher_list);
2330 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2332 if ((s == NULL) || (s->session == NULL) || !s->server)
2334 return s->session->ciphers;
2337 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2339 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2341 ciphers = SSL_get_ciphers(s);
2344 ssl_set_client_disabled(s);
2345 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2346 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2347 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2349 sk = sk_SSL_CIPHER_new_null();
2352 if (!sk_SSL_CIPHER_push(sk, c)) {
2353 sk_SSL_CIPHER_free(sk);
2361 /** return a STACK of the ciphers available for the SSL and in order of
2363 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2366 if (s->cipher_list_by_id != NULL) {
2367 return (s->cipher_list_by_id);
2368 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2369 return (s->ctx->cipher_list_by_id);
2375 /** The old interface to get the same thing as SSL_get_ciphers() */
2376 const char *SSL_get_cipher_list(const SSL *s, int n)
2378 const SSL_CIPHER *c;
2379 STACK_OF(SSL_CIPHER) *sk;
2383 sk = SSL_get_ciphers(s);
2384 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2386 c = sk_SSL_CIPHER_value(sk, n);
2392 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2394 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2397 return ctx->cipher_list;
2401 /** specify the ciphers to be used by default by the SSL_CTX */
2402 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2404 STACK_OF(SSL_CIPHER) *sk;
2406 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2407 &ctx->cipher_list_by_id, str, ctx->cert);
2409 * ssl_create_cipher_list may return an empty stack if it was unable to
2410 * find a cipher matching the given rule string (for example if the rule
2411 * string specifies a cipher which has been disabled). This is not an
2412 * error as far as ssl_create_cipher_list is concerned, and hence
2413 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2417 else if (sk_SSL_CIPHER_num(sk) == 0) {
2418 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2424 /** specify the ciphers to be used by the SSL */
2425 int SSL_set_cipher_list(SSL *s, const char *str)
2427 STACK_OF(SSL_CIPHER) *sk;
2429 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2430 &s->cipher_list_by_id, str, s->cert);
2431 /* see comment in SSL_CTX_set_cipher_list */
2434 else if (sk_SSL_CIPHER_num(sk) == 0) {
2435 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2441 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2444 STACK_OF(SSL_CIPHER) *sk;
2445 const SSL_CIPHER *c;
2448 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2452 sk = s->session->ciphers;
2454 if (sk_SSL_CIPHER_num(sk) == 0)
2457 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2460 c = sk_SSL_CIPHER_value(sk, i);
2461 n = strlen(c->name);
2468 memcpy(p, c->name, n + 1);
2477 /** return a servername extension value if provided in Client Hello, or NULL.
2478 * So far, only host_name types are defined (RFC 3546).
2481 const char *SSL_get_servername(const SSL *s, const int type)
2483 if (type != TLSEXT_NAMETYPE_host_name)
2486 return s->session && !s->ext.hostname ?
2487 s->session->ext.hostname : s->ext.hostname;
2490 int SSL_get_servername_type(const SSL *s)
2493 && (!s->ext.hostname ? s->session->
2494 ext.hostname : s->ext.hostname))
2495 return TLSEXT_NAMETYPE_host_name;
2500 * SSL_select_next_proto implements the standard protocol selection. It is
2501 * expected that this function is called from the callback set by
2502 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2503 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2504 * not included in the length. A byte string of length 0 is invalid. No byte
2505 * string may be truncated. The current, but experimental algorithm for
2506 * selecting the protocol is: 1) If the server doesn't support NPN then this
2507 * is indicated to the callback. In this case, the client application has to
2508 * abort the connection or have a default application level protocol. 2) If
2509 * the server supports NPN, but advertises an empty list then the client
2510 * selects the first protocol in its list, but indicates via the API that this
2511 * fallback case was enacted. 3) Otherwise, the client finds the first
2512 * protocol in the server's list that it supports and selects this protocol.
2513 * This is because it's assumed that the server has better information about
2514 * which protocol a client should use. 4) If the client doesn't support any
2515 * of the server's advertised protocols, then this is treated the same as
2516 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2517 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2519 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2520 const unsigned char *server,
2521 unsigned int server_len,
2522 const unsigned char *client, unsigned int client_len)
2525 const unsigned char *result;
2526 int status = OPENSSL_NPN_UNSUPPORTED;
2529 * For each protocol in server preference order, see if we support it.
2531 for (i = 0; i < server_len;) {
2532 for (j = 0; j < client_len;) {
2533 if (server[i] == client[j] &&
2534 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2535 /* We found a match */
2536 result = &server[i];
2537 status = OPENSSL_NPN_NEGOTIATED;
2547 /* There's no overlap between our protocols and the server's list. */
2549 status = OPENSSL_NPN_NO_OVERLAP;
2552 *out = (unsigned char *)result + 1;
2553 *outlen = result[0];
2557 #ifndef OPENSSL_NO_NEXTPROTONEG
2559 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2560 * client's requested protocol for this connection and returns 0. If the
2561 * client didn't request any protocol, then *data is set to NULL. Note that
2562 * the client can request any protocol it chooses. The value returned from
2563 * this function need not be a member of the list of supported protocols
2564 * provided by the callback.
2566 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2573 *len = (unsigned int)s->ext.npn_len;
2578 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2579 * a TLS server needs a list of supported protocols for Next Protocol
2580 * Negotiation. The returned list must be in wire format. The list is
2581 * returned by setting |out| to point to it and |outlen| to its length. This
2582 * memory will not be modified, but one should assume that the SSL* keeps a
2583 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2584 * wishes to advertise. Otherwise, no such extension will be included in the
2587 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2588 SSL_CTX_npn_advertised_cb_func cb,
2591 ctx->ext.npn_advertised_cb = cb;
2592 ctx->ext.npn_advertised_cb_arg = arg;
2596 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2597 * client needs to select a protocol from the server's provided list. |out|
2598 * must be set to point to the selected protocol (which may be within |in|).
2599 * The length of the protocol name must be written into |outlen|. The
2600 * server's advertised protocols are provided in |in| and |inlen|. The
2601 * callback can assume that |in| is syntactically valid. The client must
2602 * select a protocol. It is fatal to the connection if this callback returns
2603 * a value other than SSL_TLSEXT_ERR_OK.
2605 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2606 SSL_CTX_npn_select_cb_func cb,
2609 ctx->ext.npn_select_cb = cb;
2610 ctx->ext.npn_select_cb_arg = arg;
2615 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2616 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2617 * length-prefixed strings). Returns 0 on success.
2619 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2620 unsigned int protos_len)
2622 OPENSSL_free(ctx->ext.alpn);
2623 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2624 if (ctx->ext.alpn == NULL) {
2625 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2628 ctx->ext.alpn_len = protos_len;
2634 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2635 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2636 * length-prefixed strings). Returns 0 on success.
2638 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2639 unsigned int protos_len)
2641 OPENSSL_free(ssl->ext.alpn);
2642 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2643 if (ssl->ext.alpn == NULL) {
2644 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2647 ssl->ext.alpn_len = protos_len;
2653 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2654 * called during ClientHello processing in order to select an ALPN protocol
2655 * from the client's list of offered protocols.
2657 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2658 SSL_CTX_alpn_select_cb_func cb,
2661 ctx->ext.alpn_select_cb = cb;
2662 ctx->ext.alpn_select_cb_arg = arg;
2666 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2667 * On return it sets |*data| to point to |*len| bytes of protocol name
2668 * (not including the leading length-prefix byte). If the server didn't
2669 * respond with a negotiated protocol then |*len| will be zero.
2671 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2676 *data = ssl->s3->alpn_selected;
2680 *len = (unsigned int)ssl->s3->alpn_selected_len;
2683 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2684 const char *label, size_t llen,
2685 const unsigned char *context, size_t contextlen,
2688 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2691 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2693 contextlen, use_context);
2696 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2698 const unsigned char *session_id = a->session_id;
2700 unsigned char tmp_storage[4];
2702 if (a->session_id_length < sizeof(tmp_storage)) {
2703 memset(tmp_storage, 0, sizeof(tmp_storage));
2704 memcpy(tmp_storage, a->session_id, a->session_id_length);
2705 session_id = tmp_storage;
2709 ((unsigned long)session_id[0]) |
2710 ((unsigned long)session_id[1] << 8L) |
2711 ((unsigned long)session_id[2] << 16L) |
2712 ((unsigned long)session_id[3] << 24L);
2717 * NB: If this function (or indeed the hash function which uses a sort of
2718 * coarser function than this one) is changed, ensure
2719 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2720 * being able to construct an SSL_SESSION that will collide with any existing
2721 * session with a matching session ID.
2723 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2725 if (a->ssl_version != b->ssl_version)
2727 if (a->session_id_length != b->session_id_length)
2729 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2733 * These wrapper functions should remain rather than redeclaring
2734 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2735 * variable. The reason is that the functions aren't static, they're exposed
2739 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2741 SSL_CTX *ret = NULL;
2744 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2748 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2751 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2752 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2755 ret = OPENSSL_zalloc(sizeof(*ret));
2760 ret->min_proto_version = 0;
2761 ret->max_proto_version = 0;
2762 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2763 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2764 /* We take the system default. */
2765 ret->session_timeout = meth->get_timeout();
2766 ret->references = 1;
2767 ret->lock = CRYPTO_THREAD_lock_new();
2768 if (ret->lock == NULL) {
2769 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2773 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2774 ret->verify_mode = SSL_VERIFY_NONE;
2775 if ((ret->cert = ssl_cert_new()) == NULL)
2778 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2779 if (ret->sessions == NULL)
2781 ret->cert_store = X509_STORE_new();
2782 if (ret->cert_store == NULL)
2784 #ifndef OPENSSL_NO_CT
2785 ret->ctlog_store = CTLOG_STORE_new();
2786 if (ret->ctlog_store == NULL)
2789 if (!ssl_create_cipher_list(ret->method,
2790 &ret->cipher_list, &ret->cipher_list_by_id,
2791 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2792 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2793 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2797 ret->param = X509_VERIFY_PARAM_new();
2798 if (ret->param == NULL)
2801 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2802 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2805 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2806 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2810 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2813 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2816 /* No compression for DTLS */
2817 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2818 ret->comp_methods = SSL_COMP_get_compression_methods();
2820 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2821 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2823 /* Setup RFC5077 ticket keys */
2824 if ((RAND_bytes(ret->ext.tick_key_name,
2825 sizeof(ret->ext.tick_key_name)) <= 0)
2826 || (RAND_bytes(ret->ext.tick_hmac_key,
2827 sizeof(ret->ext.tick_hmac_key)) <= 0)
2828 || (RAND_bytes(ret->ext.tick_aes_key,
2829 sizeof(ret->ext.tick_aes_key)) <= 0))
2830 ret->options |= SSL_OP_NO_TICKET;
2832 #ifndef OPENSSL_NO_SRP
2833 if (!SSL_CTX_SRP_CTX_init(ret))
2836 #ifndef OPENSSL_NO_ENGINE
2837 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2838 # define eng_strx(x) #x
2839 # define eng_str(x) eng_strx(x)
2840 /* Use specific client engine automatically... ignore errors */
2843 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2846 ENGINE_load_builtin_engines();
2847 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2849 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2855 * Default is to connect to non-RI servers. When RI is more widely
2856 * deployed might change this.
2858 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2860 * Disable compression by default to prevent CRIME. Applications can
2861 * re-enable compression by configuring
2862 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2863 * or by using the SSL_CONF library.
2865 ret->options |= SSL_OP_NO_COMPRESSION;
2867 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2870 * Default max early data is a fully loaded single record. Could be split
2871 * across multiple records in practice
2873 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2877 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2883 int SSL_CTX_up_ref(SSL_CTX *ctx)
2887 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2890 REF_PRINT_COUNT("SSL_CTX", ctx);
2891 REF_ASSERT_ISNT(i < 2);
2892 return ((i > 1) ? 1 : 0);
2895 void SSL_CTX_free(SSL_CTX *a)
2902 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2903 REF_PRINT_COUNT("SSL_CTX", a);
2906 REF_ASSERT_ISNT(i < 0);
2908 X509_VERIFY_PARAM_free(a->param);
2909 dane_ctx_final(&a->dane);
2912 * Free internal session cache. However: the remove_cb() may reference
2913 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2914 * after the sessions were flushed.
2915 * As the ex_data handling routines might also touch the session cache,
2916 * the most secure solution seems to be: empty (flush) the cache, then
2917 * free ex_data, then finally free the cache.
2918 * (See ticket [openssl.org #212].)
2920 if (a->sessions != NULL)
2921 SSL_CTX_flush_sessions(a, 0);
2923 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2924 lh_SSL_SESSION_free(a->sessions);
2925 X509_STORE_free(a->cert_store);
2926 #ifndef OPENSSL_NO_CT
2927 CTLOG_STORE_free(a->ctlog_store);
2929 sk_SSL_CIPHER_free(a->cipher_list);
2930 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2931 ssl_cert_free(a->cert);
2932 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2933 sk_X509_pop_free(a->extra_certs, X509_free);
2934 a->comp_methods = NULL;
2935 #ifndef OPENSSL_NO_SRTP
2936 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2938 #ifndef OPENSSL_NO_SRP
2939 SSL_CTX_SRP_CTX_free(a);
2941 #ifndef OPENSSL_NO_ENGINE
2942 ENGINE_finish(a->client_cert_engine);
2945 #ifndef OPENSSL_NO_EC
2946 OPENSSL_free(a->ext.ecpointformats);
2947 OPENSSL_free(a->ext.supportedgroups);
2949 OPENSSL_free(a->ext.alpn);
2951 CRYPTO_THREAD_lock_free(a->lock);
2956 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2958 ctx->default_passwd_callback = cb;
2961 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2963 ctx->default_passwd_callback_userdata = u;
2966 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2968 return ctx->default_passwd_callback;
2971 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2973 return ctx->default_passwd_callback_userdata;
2976 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2978 s->default_passwd_callback = cb;
2981 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2983 s->default_passwd_callback_userdata = u;
2986 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2988 return s->default_passwd_callback;
2991 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2993 return s->default_passwd_callback_userdata;
2996 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2997 int (*cb) (X509_STORE_CTX *, void *),
3000 ctx->app_verify_callback = cb;
3001 ctx->app_verify_arg = arg;
3004 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3005 int (*cb) (int, X509_STORE_CTX *))
3007 ctx->verify_mode = mode;
3008 ctx->default_verify_callback = cb;
3011 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3013 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3016 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3018 ssl_cert_set_cert_cb(c->cert, cb, arg);
3021 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3023 ssl_cert_set_cert_cb(s->cert, cb, arg);
3026 void ssl_set_masks(SSL *s)
3029 uint32_t *pvalid = s->s3->tmp.valid_flags;
3030 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3031 unsigned long mask_k, mask_a;
3032 #ifndef OPENSSL_NO_EC
3033 int have_ecc_cert, ecdsa_ok;
3038 #ifndef OPENSSL_NO_DH
3039 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3044 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3045 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3046 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3047 #ifndef OPENSSL_NO_EC
3048 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3054 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3055 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3058 #ifndef OPENSSL_NO_GOST
3059 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3060 mask_k |= SSL_kGOST;
3061 mask_a |= SSL_aGOST12;
3063 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3064 mask_k |= SSL_kGOST;
3065 mask_a |= SSL_aGOST12;
3067 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3068 mask_k |= SSL_kGOST;
3069 mask_a |= SSL_aGOST01;
3079 if (rsa_enc || rsa_sign) {
3087 mask_a |= SSL_aNULL;
3090 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3091 * depending on the key usage extension.
3093 #ifndef OPENSSL_NO_EC
3094 if (have_ecc_cert) {
3096 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3097 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3098 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3101 mask_a |= SSL_aECDSA;
3103 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3104 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3105 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3106 && TLS1_get_version(s) == TLS1_2_VERSION)
3107 mask_a |= SSL_aECDSA;
3110 #ifndef OPENSSL_NO_EC
3111 mask_k |= SSL_kECDHE;
3114 #ifndef OPENSSL_NO_PSK
3117 if (mask_k & SSL_kRSA)
3118 mask_k |= SSL_kRSAPSK;
3119 if (mask_k & SSL_kDHE)
3120 mask_k |= SSL_kDHEPSK;
3121 if (mask_k & SSL_kECDHE)
3122 mask_k |= SSL_kECDHEPSK;
3125 s->s3->tmp.mask_k = mask_k;
3126 s->s3->tmp.mask_a = mask_a;
3129 #ifndef OPENSSL_NO_EC
3131 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3133 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3134 /* key usage, if present, must allow signing */
3135 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3136 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3137 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3141 return 1; /* all checks are ok */
3146 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3147 size_t *serverinfo_length)
3149 CERT_PKEY *cpk = s->s3->tmp.cert;
3150 *serverinfo_length = 0;
3152 if (cpk == NULL || cpk->serverinfo == NULL)
3155 *serverinfo = cpk->serverinfo;
3156 *serverinfo_length = cpk->serverinfo_length;
3160 void ssl_update_cache(SSL *s, int mode)
3165 * If the session_id_length is 0, we are not supposed to cache it, and it
3166 * would be rather hard to do anyway :-)
3168 if (s->session->session_id_length == 0)
3171 i = s->session_ctx->session_cache_mode;
3173 && (!s->hit || SSL_IS_TLS13(s))
3174 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
3175 || SSL_CTX_add_session(s->session_ctx, s->session))
3176 && s->session_ctx->new_session_cb != NULL) {
3177 SSL_SESSION_up_ref(s->session);
3178 if (!s->session_ctx->new_session_cb(s, s->session))
3179 SSL_SESSION_free(s->session);
3182 /* auto flush every 255 connections */
3183 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3184 if ((((mode & SSL_SESS_CACHE_CLIENT)
3185 ? s->session_ctx->stats.sess_connect_good
3186 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3187 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3192 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3197 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3202 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3206 if (s->method != meth) {
3207 const SSL_METHOD *sm = s->method;
3208 int (*hf) (SSL *) = s->handshake_func;
3210 if (sm->version == meth->version)
3215 ret = s->method->ssl_new(s);
3218 if (hf == sm->ssl_connect)
3219 s->handshake_func = meth->ssl_connect;
3220 else if (hf == sm->ssl_accept)
3221 s->handshake_func = meth->ssl_accept;
3226 int SSL_get_error(const SSL *s, int i)
3233 return (SSL_ERROR_NONE);
3236 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3237 * where we do encode the error
3239 if ((l = ERR_peek_error()) != 0) {
3240 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3241 return (SSL_ERROR_SYSCALL);
3243 return (SSL_ERROR_SSL);
3246 if (SSL_want_read(s)) {
3247 bio = SSL_get_rbio(s);
3248 if (BIO_should_read(bio))
3249 return (SSL_ERROR_WANT_READ);
3250 else if (BIO_should_write(bio))
3252 * This one doesn't make too much sense ... We never try to write
3253 * to the rbio, and an application program where rbio and wbio
3254 * are separate couldn't even know what it should wait for.
3255 * However if we ever set s->rwstate incorrectly (so that we have
3256 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3257 * wbio *are* the same, this test works around that bug; so it
3258 * might be safer to keep it.
3260 return (SSL_ERROR_WANT_WRITE);
3261 else if (BIO_should_io_special(bio)) {
3262 reason = BIO_get_retry_reason(bio);
3263 if (reason == BIO_RR_CONNECT)
3264 return (SSL_ERROR_WANT_CONNECT);
3265 else if (reason == BIO_RR_ACCEPT)
3266 return (SSL_ERROR_WANT_ACCEPT);
3268 return (SSL_ERROR_SYSCALL); /* unknown */
3272 if (SSL_want_write(s)) {
3273 /* Access wbio directly - in order to use the buffered bio if present */
3275 if (BIO_should_write(bio))
3276 return (SSL_ERROR_WANT_WRITE);
3277 else if (BIO_should_read(bio))
3279 * See above (SSL_want_read(s) with BIO_should_write(bio))
3281 return (SSL_ERROR_WANT_READ);
3282 else if (BIO_should_io_special(bio)) {
3283 reason = BIO_get_retry_reason(bio);
3284 if (reason == BIO_RR_CONNECT)
3285 return (SSL_ERROR_WANT_CONNECT);
3286 else if (reason == BIO_RR_ACCEPT)
3287 return (SSL_ERROR_WANT_ACCEPT);
3289 return (SSL_ERROR_SYSCALL);
3292 if (SSL_want_x509_lookup(s))
3293 return (SSL_ERROR_WANT_X509_LOOKUP);
3294 if (SSL_want_async(s))
3295 return SSL_ERROR_WANT_ASYNC;
3296 if (SSL_want_async_job(s))
3297 return SSL_ERROR_WANT_ASYNC_JOB;
3298 if (SSL_want_early(s))
3299 return SSL_ERROR_WANT_EARLY;
3301 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3302 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3303 return (SSL_ERROR_ZERO_RETURN);
3305 return (SSL_ERROR_SYSCALL);
3308 static int ssl_do_handshake_intern(void *vargs)
3310 struct ssl_async_args *args;
3313 args = (struct ssl_async_args *)vargs;
3316 return s->handshake_func(s);
3319 int SSL_do_handshake(SSL *s)
3323 if (s->handshake_func == NULL) {
3324 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3328 ossl_statem_check_finish_init(s, -1);
3330 s->method->ssl_renegotiate_check(s, 0);
3332 if (SSL_is_server(s)) {
3333 /* clear SNI settings at server-side */
3334 OPENSSL_free(s->ext.hostname);
3335 s->ext.hostname = NULL;
3338 if (SSL_in_init(s) || SSL_in_before(s)) {
3339 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3340 struct ssl_async_args args;
3344 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3346 ret = s->handshake_func(s);
3352 void SSL_set_accept_state(SSL *s)
3356 ossl_statem_clear(s);
3357 s->handshake_func = s->method->ssl_accept;
3361 void SSL_set_connect_state(SSL *s)
3365 ossl_statem_clear(s);
3366 s->handshake_func = s->method->ssl_connect;
3370 int ssl_undefined_function(SSL *s)
3372 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3376 int ssl_undefined_void_function(void)
3378 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3379 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3383 int ssl_undefined_const_function(const SSL *s)
3388 const SSL_METHOD *ssl_bad_method(int ver)
3390 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3394 const char *ssl_protocol_to_string(int version)
3398 case TLS1_3_VERSION:
3401 case TLS1_2_VERSION:
3404 case TLS1_1_VERSION:
3419 case DTLS1_2_VERSION:
3427 const char *SSL_get_version(const SSL *s)
3429 return ssl_protocol_to_string(s->version);
3432 SSL *SSL_dup(SSL *s)
3434 STACK_OF(X509_NAME) *sk;
3439 /* If we're not quiescent, just up_ref! */
3440 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3441 CRYPTO_UP_REF(&s->references, &i, s->lock);
3446 * Otherwise, copy configuration state, and session if set.
3448 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3451 if (s->session != NULL) {
3453 * Arranges to share the same session via up_ref. This "copies"
3454 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3456 if (!SSL_copy_session_id(ret, s))
3460 * No session has been established yet, so we have to expect that
3461 * s->cert or ret->cert will be changed later -- they should not both
3462 * point to the same object, and thus we can't use
3463 * SSL_copy_session_id.
3465 if (!SSL_set_ssl_method(ret, s->method))
3468 if (s->cert != NULL) {
3469 ssl_cert_free(ret->cert);
3470 ret->cert = ssl_cert_dup(s->cert);
3471 if (ret->cert == NULL)
3475 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3476 (int)s->sid_ctx_length))
3480 if (!ssl_dane_dup(ret, s))
3482 ret->version = s->version;
3483 ret->options = s->options;
3484 ret->mode = s->mode;
3485 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3486 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3487 ret->msg_callback = s->msg_callback;
3488 ret->msg_callback_arg = s->msg_callback_arg;
3489 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3490 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3491 ret->generate_session_id = s->generate_session_id;
3493 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3495 /* copy app data, a little dangerous perhaps */
3496 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3499 /* setup rbio, and wbio */
3500 if (s->rbio != NULL) {
3501 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3504 if (s->wbio != NULL) {
3505 if (s->wbio != s->rbio) {
3506 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3509 BIO_up_ref(ret->rbio);
3510 ret->wbio = ret->rbio;
3514 ret->server = s->server;
3515 if (s->handshake_func) {
3517 SSL_set_accept_state(ret);
3519 SSL_set_connect_state(ret);
3521 ret->shutdown = s->shutdown;
3524 ret->default_passwd_callback = s->default_passwd_callback;
3525 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3527 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3529 /* dup the cipher_list and cipher_list_by_id stacks */
3530 if (s->cipher_list != NULL) {
3531 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3534 if (s->cipher_list_by_id != NULL)
3535 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3539 /* Dup the client_CA list */
3540 if (s->ca_names != NULL) {
3541 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3544 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3545 xn = sk_X509_NAME_value(sk, i);
3546 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3559 void ssl_clear_cipher_ctx(SSL *s)
3561 if (s->enc_read_ctx != NULL) {
3562 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3563 s->enc_read_ctx = NULL;
3565 if (s->enc_write_ctx != NULL) {
3566 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3567 s->enc_write_ctx = NULL;
3569 #ifndef OPENSSL_NO_COMP
3570 COMP_CTX_free(s->expand);
3572 COMP_CTX_free(s->compress);
3577 X509 *SSL_get_certificate(const SSL *s)
3579 if (s->cert != NULL)
3580 return (s->cert->key->x509);
3585 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3587 if (s->cert != NULL)
3588 return (s->cert->key->privatekey);
3593 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3595 if (ctx->cert != NULL)
3596 return ctx->cert->key->x509;
3601 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3603 if (ctx->cert != NULL)
3604 return ctx->cert->key->privatekey;
3609 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3611 if ((s->session != NULL) && (s->session->cipher != NULL))
3612 return (s->session->cipher);
3616 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3618 return s->s3->tmp.new_cipher;
3621 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3623 #ifndef OPENSSL_NO_COMP
3624 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3630 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3632 #ifndef OPENSSL_NO_COMP
3633 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3639 int ssl_init_wbio_buffer(SSL *s)
3643 if (s->bbio != NULL) {
3644 /* Already buffered. */
3648 bbio = BIO_new(BIO_f_buffer());
3649 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3651 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3655 s->wbio = BIO_push(bbio, s->wbio);
3660 int ssl_free_wbio_buffer(SSL *s)
3662 /* callers ensure s is never null */
3663 if (s->bbio == NULL)
3666 s->wbio = BIO_pop(s->wbio);
3667 if (!ossl_assert(s->wbio != NULL))
3675 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3677 ctx->quiet_shutdown = mode;
3680 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3682 return (ctx->quiet_shutdown);
3685 void SSL_set_quiet_shutdown(SSL *s, int mode)
3687 s->quiet_shutdown = mode;
3690 int SSL_get_quiet_shutdown(const SSL *s)
3692 return (s->quiet_shutdown);
3695 void SSL_set_shutdown(SSL *s, int mode)
3700 int SSL_get_shutdown(const SSL *s)
3705 int SSL_version(const SSL *s)
3710 int SSL_client_version(const SSL *s)
3712 return s->client_version;
3715 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3720 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3723 if (ssl->ctx == ctx)
3726 ctx = ssl->session_ctx;
3727 new_cert = ssl_cert_dup(ctx->cert);
3728 if (new_cert == NULL) {
3732 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3733 ssl_cert_free(new_cert);
3737 ssl_cert_free(ssl->cert);
3738 ssl->cert = new_cert;
3741 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3742 * so setter APIs must prevent invalid lengths from entering the system.
3744 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3748 * If the session ID context matches that of the parent SSL_CTX,
3749 * inherit it from the new SSL_CTX as well. If however the context does
3750 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3751 * leave it unchanged.
3753 if ((ssl->ctx != NULL) &&
3754 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3755 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3756 ssl->sid_ctx_length = ctx->sid_ctx_length;
3757 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3760 SSL_CTX_up_ref(ctx);
3761 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3767 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3769 return (X509_STORE_set_default_paths(ctx->cert_store));
3772 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3774 X509_LOOKUP *lookup;
3776 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3779 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3781 /* Clear any errors if the default directory does not exist */
3787 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3789 X509_LOOKUP *lookup;
3791 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3795 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3797 /* Clear any errors if the default file does not exist */
3803 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3806 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3809 void SSL_set_info_callback(SSL *ssl,
3810 void (*cb) (const SSL *ssl, int type, int val))
3812 ssl->info_callback = cb;
3816 * One compiler (Diab DCC) doesn't like argument names in returned function
3819 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3822 return ssl->info_callback;
3825 void SSL_set_verify_result(SSL *ssl, long arg)
3827 ssl->verify_result = arg;
3830 long SSL_get_verify_result(const SSL *ssl)
3832 return (ssl->verify_result);
3835 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3838 return sizeof(ssl->s3->client_random);
3839 if (outlen > sizeof(ssl->s3->client_random))
3840 outlen = sizeof(ssl->s3->client_random);
3841 memcpy(out, ssl->s3->client_random, outlen);
3845 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3848 return sizeof(ssl->s3->server_random);
3849 if (outlen > sizeof(ssl->s3->server_random))
3850 outlen = sizeof(ssl->s3->server_random);
3851 memcpy(out, ssl->s3->server_random, outlen);
3855 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3856 unsigned char *out, size_t outlen)
3859 return session->master_key_length;
3860 if (outlen > session->master_key_length)
3861 outlen = session->master_key_length;
3862 memcpy(out, session->master_key, outlen);
3866 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3869 if (len > sizeof(sess->master_key))
3872 memcpy(sess->master_key, in, len);
3873 sess->master_key_length = len;
3878 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3880 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3883 void *SSL_get_ex_data(const SSL *s, int idx)
3885 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3888 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3890 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3893 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3895 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3898 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3900 return (ctx->cert_store);
3903 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3905 X509_STORE_free(ctx->cert_store);
3906 ctx->cert_store = store;
3909 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3912 X509_STORE_up_ref(store);
3913 SSL_CTX_set_cert_store(ctx, store);
3916 int SSL_want(const SSL *s)
3918 return (s->rwstate);
3922 * \brief Set the callback for generating temporary DH keys.
3923 * \param ctx the SSL context.
3924 * \param dh the callback
3927 #ifndef OPENSSL_NO_DH
3928 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3929 DH *(*dh) (SSL *ssl, int is_export,
3932 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3935 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3938 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3942 #ifndef OPENSSL_NO_PSK
3943 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3945 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3946 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3949 OPENSSL_free(ctx->cert->psk_identity_hint);
3950 if (identity_hint != NULL) {
3951 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3952 if (ctx->cert->psk_identity_hint == NULL)
3955 ctx->cert->psk_identity_hint = NULL;
3959 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3964 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3965 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3968 OPENSSL_free(s->cert->psk_identity_hint);
3969 if (identity_hint != NULL) {
3970 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3971 if (s->cert->psk_identity_hint == NULL)
3974 s->cert->psk_identity_hint = NULL;
3978 const char *SSL_get_psk_identity_hint(const SSL *s)
3980 if (s == NULL || s->session == NULL)
3982 return (s->session->psk_identity_hint);
3985 const char *SSL_get_psk_identity(const SSL *s)
3987 if (s == NULL || s->session == NULL)
3989 return (s->session->psk_identity);
3992 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
3994 s->psk_client_callback = cb;
3997 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
3999 ctx->psk_client_callback = cb;
4002 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4004 s->psk_server_callback = cb;
4007 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4009 ctx->psk_server_callback = cb;
4013 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4015 s->psk_find_session_cb = cb;
4018 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4019 SSL_psk_find_session_cb_func cb)
4021 ctx->psk_find_session_cb = cb;
4024 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4026 s->psk_use_session_cb = cb;
4029 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4030 SSL_psk_use_session_cb_func cb)
4032 ctx->psk_use_session_cb = cb;
4035 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4036 void (*cb) (int write_p, int version,
4037 int content_type, const void *buf,
4038 size_t len, SSL *ssl, void *arg))
4040 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4043 void SSL_set_msg_callback(SSL *ssl,
4044 void (*cb) (int write_p, int version,
4045 int content_type, const void *buf,
4046 size_t len, SSL *ssl, void *arg))
4048 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4051 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4052 int (*cb) (SSL *ssl,
4056 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4057 (void (*)(void))cb);
4060 void SSL_set_not_resumable_session_callback(SSL *ssl,
4061 int (*cb) (SSL *ssl,
4062 int is_forward_secure))
4064 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4065 (void (*)(void))cb);
4068 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4069 size_t (*cb) (SSL *ssl, int type,
4070 size_t len, void *arg))
4072 ctx->record_padding_cb = cb;
4075 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4077 ctx->record_padding_arg = arg;
4080 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4082 return ctx->record_padding_arg;
4085 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4087 /* block size of 0 or 1 is basically no padding */
4088 if (block_size == 1)
4089 ctx->block_padding = 0;
4090 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4091 ctx->block_padding = block_size;
4097 void SSL_set_record_padding_callback(SSL *ssl,
4098 size_t (*cb) (SSL *ssl, int type,
4099 size_t len, void *arg))
4101 ssl->record_padding_cb = cb;
4104 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4106 ssl->record_padding_arg = arg;
4109 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4111 return ssl->record_padding_arg;
4114 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4116 /* block size of 0 or 1 is basically no padding */
4117 if (block_size == 1)
4118 ssl->block_padding = 0;
4119 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4120 ssl->block_padding = block_size;
4127 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4128 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4129 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4130 * Returns the newly allocated ctx;
4133 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4135 ssl_clear_hash_ctx(hash);
4136 *hash = EVP_MD_CTX_new();
4137 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4138 EVP_MD_CTX_free(*hash);
4145 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4148 EVP_MD_CTX_free(*hash);
4152 /* Retrieve handshake hashes */
4153 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4156 EVP_MD_CTX *ctx = NULL;
4157 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4158 int hashleni = EVP_MD_CTX_size(hdgst);
4161 if (hashleni < 0 || (size_t)hashleni > outlen)
4164 ctx = EVP_MD_CTX_new();
4168 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4169 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4172 *hashlen = hashleni;
4176 EVP_MD_CTX_free(ctx);
4180 int SSL_session_reused(SSL *s)
4185 int SSL_is_server(const SSL *s)
4190 #if OPENSSL_API_COMPAT < 0x10100000L
4191 void SSL_set_debug(SSL *s, int debug)
4193 /* Old function was do-nothing anyway... */
4199 void SSL_set_security_level(SSL *s, int level)
4201 s->cert->sec_level = level;
4204 int SSL_get_security_level(const SSL *s)
4206 return s->cert->sec_level;
4209 void SSL_set_security_callback(SSL *s,
4210 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4211 int op, int bits, int nid,
4212 void *other, void *ex))
4214 s->cert->sec_cb = cb;
4217 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4218 const SSL_CTX *ctx, int op,
4219 int bits, int nid, void *other,
4221 return s->cert->sec_cb;
4224 void SSL_set0_security_ex_data(SSL *s, void *ex)
4226 s->cert->sec_ex = ex;
4229 void *SSL_get0_security_ex_data(const SSL *s)
4231 return s->cert->sec_ex;
4234 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4236 ctx->cert->sec_level = level;
4239 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4241 return ctx->cert->sec_level;
4244 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4245 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4246 int op, int bits, int nid,
4247 void *other, void *ex))
4249 ctx->cert->sec_cb = cb;
4252 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4258 return ctx->cert->sec_cb;
4261 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4263 ctx->cert->sec_ex = ex;
4266 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4268 return ctx->cert->sec_ex;
4272 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4273 * can return unsigned long, instead of the generic long return value from the
4274 * control interface.
4276 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4278 return ctx->options;
4281 unsigned long SSL_get_options(const SSL *s)
4286 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4288 return ctx->options |= op;
4291 unsigned long SSL_set_options(SSL *s, unsigned long op)
4293 return s->options |= op;
4296 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4298 return ctx->options &= ~op;
4301 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4303 return s->options &= ~op;
4306 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4308 return s->verified_chain;
4311 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4313 #ifndef OPENSSL_NO_CT
4316 * Moves SCTs from the |src| stack to the |dst| stack.
4317 * The source of each SCT will be set to |origin|.
4318 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4320 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4322 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4323 sct_source_t origin)
4329 *dst = sk_SCT_new_null();
4331 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4336 while ((sct = sk_SCT_pop(src)) != NULL) {
4337 if (SCT_set_source(sct, origin) != 1)
4340 if (sk_SCT_push(*dst, sct) <= 0)
4348 sk_SCT_push(src, sct); /* Put the SCT back */
4353 * Look for data collected during ServerHello and parse if found.
4354 * Returns the number of SCTs extracted.
4356 static int ct_extract_tls_extension_scts(SSL *s)
4358 int scts_extracted = 0;
4360 if (s->ext.scts != NULL) {
4361 const unsigned char *p = s->ext.scts;
4362 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4364 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4366 SCT_LIST_free(scts);
4369 return scts_extracted;
4373 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4374 * contains an SCT X509 extension. They will be stored in |s->scts|.
4376 * - The number of SCTs extracted, assuming an OCSP response exists.
4377 * - 0 if no OCSP response exists or it contains no SCTs.
4378 * - A negative integer if an error occurs.
4380 static int ct_extract_ocsp_response_scts(SSL *s)
4382 # ifndef OPENSSL_NO_OCSP
4383 int scts_extracted = 0;
4384 const unsigned char *p;
4385 OCSP_BASICRESP *br = NULL;
4386 OCSP_RESPONSE *rsp = NULL;
4387 STACK_OF(SCT) *scts = NULL;
4390 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4393 p = s->ext.ocsp.resp;
4394 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4398 br = OCSP_response_get1_basic(rsp);
4402 for (i = 0; i < OCSP_resp_count(br); ++i) {
4403 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4409 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4411 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4412 if (scts_extracted < 0)
4416 SCT_LIST_free(scts);
4417 OCSP_BASICRESP_free(br);
4418 OCSP_RESPONSE_free(rsp);
4419 return scts_extracted;
4421 /* Behave as if no OCSP response exists */
4427 * Attempts to extract SCTs from the peer certificate.
4428 * Return the number of SCTs extracted, or a negative integer if an error
4431 static int ct_extract_x509v3_extension_scts(SSL *s)
4433 int scts_extracted = 0;
4434 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4437 STACK_OF(SCT) *scts =
4438 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4441 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4443 SCT_LIST_free(scts);
4446 return scts_extracted;
4450 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4451 * response (if it exists) and X509v3 extensions in the certificate.
4452 * Returns NULL if an error occurs.
4454 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4456 if (!s->scts_parsed) {
4457 if (ct_extract_tls_extension_scts(s) < 0 ||
4458 ct_extract_ocsp_response_scts(s) < 0 ||
4459 ct_extract_x509v3_extension_scts(s) < 0)
4469 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4470 const STACK_OF(SCT) *scts, void *unused_arg)
4475 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4476 const STACK_OF(SCT) *scts, void *unused_arg)
4478 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4481 for (i = 0; i < count; ++i) {
4482 SCT *sct = sk_SCT_value(scts, i);
4483 int status = SCT_get_validation_status(sct);
4485 if (status == SCT_VALIDATION_STATUS_VALID)
4488 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4492 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4496 * Since code exists that uses the custom extension handler for CT, look
4497 * for this and throw an error if they have already registered to use CT.
4499 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4500 TLSEXT_TYPE_signed_certificate_timestamp))
4502 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4503 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4507 if (callback != NULL) {
4509 * If we are validating CT, then we MUST accept SCTs served via OCSP
4511 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4515 s->ct_validation_callback = callback;
4516 s->ct_validation_callback_arg = arg;
4521 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4522 ssl_ct_validation_cb callback, void *arg)
4525 * Since code exists that uses the custom extension handler for CT, look for
4526 * this and throw an error if they have already registered to use CT.
4528 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4529 TLSEXT_TYPE_signed_certificate_timestamp))
4531 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4532 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4536 ctx->ct_validation_callback = callback;
4537 ctx->ct_validation_callback_arg = arg;
4541 int SSL_ct_is_enabled(const SSL *s)
4543 return s->ct_validation_callback != NULL;
4546 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4548 return ctx->ct_validation_callback != NULL;
4551 int ssl_validate_ct(SSL *s)
4554 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4556 SSL_DANE *dane = &s->dane;
4557 CT_POLICY_EVAL_CTX *ctx = NULL;
4558 const STACK_OF(SCT) *scts;
4561 * If no callback is set, the peer is anonymous, or its chain is invalid,
4562 * skip SCT validation - just return success. Applications that continue
4563 * handshakes without certificates, with unverified chains, or pinned leaf
4564 * certificates are outside the scope of the WebPKI and CT.
4566 * The above exclusions notwithstanding the vast majority of peers will
4567 * have rather ordinary certificate chains validated by typical
4568 * applications that perform certificate verification and therefore will
4569 * process SCTs when enabled.
4571 if (s->ct_validation_callback == NULL || cert == NULL ||
4572 s->verify_result != X509_V_OK ||
4573 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4577 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4578 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4580 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4581 switch (dane->mtlsa->usage) {
4582 case DANETLS_USAGE_DANE_TA:
4583 case DANETLS_USAGE_DANE_EE:
4588 ctx = CT_POLICY_EVAL_CTX_new();
4590 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4594 issuer = sk_X509_value(s->verified_chain, 1);
4595 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4596 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4597 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4598 CT_POLICY_EVAL_CTX_set_time(
4599 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4601 scts = SSL_get0_peer_scts(s);
4604 * This function returns success (> 0) only when all the SCTs are valid, 0
4605 * when some are invalid, and < 0 on various internal errors (out of
4606 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4607 * reason to abort the handshake, that decision is up to the callback.
4608 * Therefore, we error out only in the unexpected case that the return
4609 * value is negative.
4611 * XXX: One might well argue that the return value of this function is an
4612 * unfortunate design choice. Its job is only to determine the validation
4613 * status of each of the provided SCTs. So long as it correctly separates
4614 * the wheat from the chaff it should return success. Failure in this case
4615 * ought to correspond to an inability to carry out its duties.
4617 if (SCT_LIST_validate(scts, ctx) < 0) {
4618 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4622 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4624 ret = 0; /* This function returns 0 on failure */
4627 CT_POLICY_EVAL_CTX_free(ctx);
4629 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4630 * failure return code here. Also the application may wish the complete
4631 * the handshake, and then disconnect cleanly at a higher layer, after
4632 * checking the verification status of the completed connection.
4634 * We therefore force a certificate verification failure which will be
4635 * visible via SSL_get_verify_result() and cached as part of any resumed
4638 * Note: the permissive callback is for information gathering only, always
4639 * returns success, and does not affect verification status. Only the
4640 * strict callback or a custom application-specified callback can trigger
4641 * connection failure or record a verification error.
4644 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4648 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4650 switch (validation_mode) {
4652 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4654 case SSL_CT_VALIDATION_PERMISSIVE:
4655 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4656 case SSL_CT_VALIDATION_STRICT:
4657 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4661 int SSL_enable_ct(SSL *s, int validation_mode)
4663 switch (validation_mode) {
4665 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4667 case SSL_CT_VALIDATION_PERMISSIVE:
4668 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4669 case SSL_CT_VALIDATION_STRICT:
4670 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4674 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4676 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4679 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4681 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4684 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4686 CTLOG_STORE_free(ctx->ctlog_store);
4687 ctx->ctlog_store = logs;
4690 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4692 return ctx->ctlog_store;
4695 #endif /* OPENSSL_NO_CT */
4697 void SSL_CTX_set_early_cb(SSL_CTX *c, SSL_early_cb_fn cb, void *arg)
4700 c->early_cb_arg = arg;
4703 int SSL_early_isv2(SSL *s)
4705 if (s->clienthello == NULL)
4707 return s->clienthello->isv2;
4710 unsigned int SSL_early_get0_legacy_version(SSL *s)
4712 if (s->clienthello == NULL)
4714 return s->clienthello->legacy_version;
4717 size_t SSL_early_get0_random(SSL *s, const unsigned char **out)
4719 if (s->clienthello == NULL)
4722 *out = s->clienthello->random;
4723 return SSL3_RANDOM_SIZE;
4726 size_t SSL_early_get0_session_id(SSL *s, const unsigned char **out)
4728 if (s->clienthello == NULL)
4731 *out = s->clienthello->session_id;
4732 return s->clienthello->session_id_len;
4735 size_t SSL_early_get0_ciphers(SSL *s, const unsigned char **out)
4737 if (s->clienthello == NULL)
4740 *out = PACKET_data(&s->clienthello->ciphersuites);
4741 return PACKET_remaining(&s->clienthello->ciphersuites);
4744 size_t SSL_early_get0_compression_methods(SSL *s, const unsigned char **out)
4746 if (s->clienthello == NULL)
4749 *out = s->clienthello->compressions;
4750 return s->clienthello->compressions_len;
4753 int SSL_early_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4759 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4761 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4762 ext = s->clienthello->pre_proc_exts + i;
4766 present = OPENSSL_malloc(sizeof(*present) * num);
4767 if (present == NULL)
4769 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4770 ext = s->clienthello->pre_proc_exts + i;
4772 if (ext->received_order >= num)
4774 present[ext->received_order] = ext->type;
4781 OPENSSL_free(present);
4785 int SSL_early_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4791 if (s->clienthello == NULL)
4793 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4794 r = s->clienthello->pre_proc_exts + i;
4795 if (r->present && r->type == type) {
4797 *out = PACKET_data(&r->data);
4799 *outlen = PACKET_remaining(&r->data);
4806 int SSL_free_buffers(SSL *ssl)
4808 RECORD_LAYER *rl = &ssl->rlayer;
4810 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4813 RECORD_LAYER_release(rl);
4817 int SSL_alloc_buffers(SSL *ssl)
4819 return ssl3_setup_buffers(ssl);
4822 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4824 ctx->keylog_callback = cb;
4827 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4829 return ctx->keylog_callback;
4832 static int nss_keylog_int(const char *prefix,
4834 const uint8_t *parameter_1,
4835 size_t parameter_1_len,
4836 const uint8_t *parameter_2,
4837 size_t parameter_2_len)
4840 char *cursor = NULL;
4845 if (ssl->ctx->keylog_callback == NULL) return 1;
4848 * Our output buffer will contain the following strings, rendered with
4849 * space characters in between, terminated by a NULL character: first the
4850 * prefix, then the first parameter, then the second parameter. The
4851 * meaning of each parameter depends on the specific key material being
4852 * logged. Note that the first and second parameters are encoded in
4853 * hexadecimal, so we need a buffer that is twice their lengths.
4855 prefix_len = strlen(prefix);
4856 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4857 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4858 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4862 strcpy(cursor, prefix);
4863 cursor += prefix_len;
4866 for (i = 0; i < parameter_1_len; i++) {
4867 sprintf(cursor, "%02x", parameter_1[i]);
4872 for (i = 0; i < parameter_2_len; i++) {
4873 sprintf(cursor, "%02x", parameter_2[i]);
4878 ssl->ctx->keylog_callback(ssl, (const char *)out);
4884 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4885 const uint8_t *encrypted_premaster,
4886 size_t encrypted_premaster_len,
4887 const uint8_t *premaster,
4888 size_t premaster_len)
4890 if (encrypted_premaster_len < 8) {
4891 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4895 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4896 return nss_keylog_int("RSA",
4898 encrypted_premaster,
4904 int ssl_log_secret(SSL *ssl,
4906 const uint8_t *secret,
4909 return nss_keylog_int(label,
4911 ssl->s3->client_random,
4917 #define SSLV2_CIPHER_LEN 3
4919 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4924 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4926 if (PACKET_remaining(cipher_suites) == 0) {
4927 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4928 *al = SSL_AD_ILLEGAL_PARAMETER;
4932 if (PACKET_remaining(cipher_suites) % n != 0) {
4933 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4934 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4935 *al = SSL_AD_DECODE_ERROR;
4939 OPENSSL_free(s->s3->tmp.ciphers_raw);
4940 s->s3->tmp.ciphers_raw = NULL;
4941 s->s3->tmp.ciphers_rawlen = 0;
4944 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4945 PACKET sslv2ciphers = *cipher_suites;
4946 unsigned int leadbyte;
4950 * We store the raw ciphers list in SSLv3+ format so we need to do some
4951 * preprocessing to convert the list first. If there are any SSLv2 only
4952 * ciphersuites with a non-zero leading byte then we are going to
4953 * slightly over allocate because we won't store those. But that isn't a
4956 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4957 s->s3->tmp.ciphers_raw = raw;
4959 *al = SSL_AD_INTERNAL_ERROR;
4962 for (s->s3->tmp.ciphers_rawlen = 0;
4963 PACKET_remaining(&sslv2ciphers) > 0;
4964 raw += TLS_CIPHER_LEN) {
4965 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4967 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4970 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4971 *al = SSL_AD_DECODE_ERROR;
4972 OPENSSL_free(s->s3->tmp.ciphers_raw);
4973 s->s3->tmp.ciphers_raw = NULL;
4974 s->s3->tmp.ciphers_rawlen = 0;
4978 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
4980 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
4981 &s->s3->tmp.ciphers_rawlen)) {
4982 *al = SSL_AD_INTERNAL_ERROR;
4990 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
4991 int isv2format, STACK_OF(SSL_CIPHER) **sk,
4992 STACK_OF(SSL_CIPHER) **scsvs)
4997 if (!PACKET_buf_init(&pkt, bytes, len))
4999 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5002 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5003 STACK_OF(SSL_CIPHER) **skp,
5004 STACK_OF(SSL_CIPHER) **scsvs_out,
5005 int sslv2format, int *al)
5007 const SSL_CIPHER *c;
5008 STACK_OF(SSL_CIPHER) *sk = NULL;
5009 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5011 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5012 unsigned char cipher[SSLV2_CIPHER_LEN];
5014 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5016 if (PACKET_remaining(cipher_suites) == 0) {
5017 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5018 *al = SSL_AD_ILLEGAL_PARAMETER;
5022 if (PACKET_remaining(cipher_suites) % n != 0) {
5023 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5024 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5025 *al = SSL_AD_DECODE_ERROR;
5029 sk = sk_SSL_CIPHER_new_null();
5030 scsvs = sk_SSL_CIPHER_new_null();
5031 if (sk == NULL || scsvs == NULL) {
5032 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5033 *al = SSL_AD_INTERNAL_ERROR;
5037 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5039 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5040 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5041 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5043 if (sslv2format && cipher[0] != '\0')
5046 /* For SSLv2-compat, ignore leading 0-byte. */
5047 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5049 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5050 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5051 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5052 *al = SSL_AD_INTERNAL_ERROR;
5057 if (PACKET_remaining(cipher_suites) > 0) {
5058 *al = SSL_AD_DECODE_ERROR;
5059 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5066 sk_SSL_CIPHER_free(sk);
5067 if (scsvs_out != NULL)
5070 sk_SSL_CIPHER_free(scsvs);
5073 sk_SSL_CIPHER_free(sk);
5074 sk_SSL_CIPHER_free(scsvs);
5078 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5080 ctx->max_early_data = max_early_data;
5085 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5087 return ctx->max_early_data;
5090 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5092 s->max_early_data = max_early_data;
5097 uint32_t SSL_get_max_early_data(const SSL *s)
5099 return s->max_early_data;
5102 int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5104 if (s->drbg != NULL)
5105 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5106 return RAND_bytes(rnd, (int)size);