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());
634 || RAND_DRBG_instantiate(s->drbg, NULL, 0) == 0) {
635 CRYPTO_THREAD_lock_free(s->lock);
640 RECORD_LAYER_init(&s->rlayer, s);
642 s->options = ctx->options;
643 s->dane.flags = ctx->dane.flags;
644 s->min_proto_version = ctx->min_proto_version;
645 s->max_proto_version = ctx->max_proto_version;
647 s->max_cert_list = ctx->max_cert_list;
649 s->max_early_data = ctx->max_early_data;
652 * Earlier library versions used to copy the pointer to the CERT, not
653 * its contents; only when setting new parameters for the per-SSL
654 * copy, ssl_cert_new would be called (and the direct reference to
655 * the per-SSL_CTX settings would be lost, but those still were
656 * indirectly accessed for various purposes, and for that reason they
657 * used to be known as s->ctx->default_cert). Now we don't look at the
658 * SSL_CTX's CERT after having duplicated it once.
660 s->cert = ssl_cert_dup(ctx->cert);
664 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
665 s->msg_callback = ctx->msg_callback;
666 s->msg_callback_arg = ctx->msg_callback_arg;
667 s->verify_mode = ctx->verify_mode;
668 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
669 s->record_padding_cb = ctx->record_padding_cb;
670 s->record_padding_arg = ctx->record_padding_arg;
671 s->block_padding = ctx->block_padding;
672 s->sid_ctx_length = ctx->sid_ctx_length;
673 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
675 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
676 s->verify_callback = ctx->default_verify_callback;
677 s->generate_session_id = ctx->generate_session_id;
679 s->param = X509_VERIFY_PARAM_new();
680 if (s->param == NULL)
682 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
683 s->quiet_shutdown = ctx->quiet_shutdown;
684 s->max_send_fragment = ctx->max_send_fragment;
685 s->split_send_fragment = ctx->split_send_fragment;
686 s->max_pipelines = ctx->max_pipelines;
687 if (s->max_pipelines > 1)
688 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
689 if (ctx->default_read_buf_len > 0)
690 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
695 s->ext.debug_arg = NULL;
696 s->ext.ticket_expected = 0;
697 s->ext.status_type = ctx->ext.status_type;
698 s->ext.status_expected = 0;
699 s->ext.ocsp.ids = NULL;
700 s->ext.ocsp.exts = NULL;
701 s->ext.ocsp.resp = NULL;
702 s->ext.ocsp.resp_len = 0;
704 s->session_ctx = ctx;
705 #ifndef OPENSSL_NO_EC
706 if (ctx->ext.ecpointformats) {
707 s->ext.ecpointformats =
708 OPENSSL_memdup(ctx->ext.ecpointformats,
709 ctx->ext.ecpointformats_len);
710 if (!s->ext.ecpointformats)
712 s->ext.ecpointformats_len =
713 ctx->ext.ecpointformats_len;
715 if (ctx->ext.supportedgroups) {
716 s->ext.supportedgroups =
717 OPENSSL_memdup(ctx->ext.supportedgroups,
718 ctx->ext.supportedgroups_len);
719 if (!s->ext.supportedgroups)
721 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
724 #ifndef OPENSSL_NO_NEXTPROTONEG
728 if (s->ctx->ext.alpn) {
729 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
730 if (s->ext.alpn == NULL)
732 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
733 s->ext.alpn_len = s->ctx->ext.alpn_len;
736 s->verified_chain = NULL;
737 s->verify_result = X509_V_OK;
739 s->default_passwd_callback = ctx->default_passwd_callback;
740 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
742 s->method = ctx->method;
744 s->key_update = SSL_KEY_UPDATE_NONE;
746 if (!s->method->ssl_new(s))
749 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
754 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
757 #ifndef OPENSSL_NO_PSK
758 s->psk_client_callback = ctx->psk_client_callback;
759 s->psk_server_callback = ctx->psk_server_callback;
761 s->psk_find_session_cb = ctx->psk_find_session_cb;
762 s->psk_use_session_cb = ctx->psk_use_session_cb;
766 #ifndef OPENSSL_NO_CT
767 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
768 ctx->ct_validation_callback_arg))
775 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
779 int SSL_is_dtls(const SSL *s)
781 return SSL_IS_DTLS(s) ? 1 : 0;
784 int SSL_up_ref(SSL *s)
788 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
791 REF_PRINT_COUNT("SSL", s);
792 REF_ASSERT_ISNT(i < 2);
793 return ((i > 1) ? 1 : 0);
796 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
797 unsigned int sid_ctx_len)
799 if (sid_ctx_len > sizeof ctx->sid_ctx) {
800 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
801 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
804 ctx->sid_ctx_length = sid_ctx_len;
805 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
810 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
811 unsigned int sid_ctx_len)
813 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
814 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
815 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
818 ssl->sid_ctx_length = sid_ctx_len;
819 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
824 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
826 CRYPTO_THREAD_write_lock(ctx->lock);
827 ctx->generate_session_id = cb;
828 CRYPTO_THREAD_unlock(ctx->lock);
832 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
834 CRYPTO_THREAD_write_lock(ssl->lock);
835 ssl->generate_session_id = cb;
836 CRYPTO_THREAD_unlock(ssl->lock);
840 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
844 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
845 * we can "construct" a session to give us the desired check - i.e. to
846 * find if there's a session in the hash table that would conflict with
847 * any new session built out of this id/id_len and the ssl_version in use
852 if (id_len > sizeof r.session_id)
855 r.ssl_version = ssl->version;
856 r.session_id_length = id_len;
857 memcpy(r.session_id, id, id_len);
859 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
860 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
861 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
865 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
867 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
870 int SSL_set_purpose(SSL *s, int purpose)
872 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
875 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
877 return X509_VERIFY_PARAM_set_trust(s->param, trust);
880 int SSL_set_trust(SSL *s, int trust)
882 return X509_VERIFY_PARAM_set_trust(s->param, trust);
885 int SSL_set1_host(SSL *s, const char *hostname)
887 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
890 int SSL_add1_host(SSL *s, const char *hostname)
892 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
895 void SSL_set_hostflags(SSL *s, unsigned int flags)
897 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
900 const char *SSL_get0_peername(SSL *s)
902 return X509_VERIFY_PARAM_get0_peername(s->param);
905 int SSL_CTX_dane_enable(SSL_CTX *ctx)
907 return dane_ctx_enable(&ctx->dane);
910 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
912 unsigned long orig = ctx->dane.flags;
914 ctx->dane.flags |= flags;
918 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
920 unsigned long orig = ctx->dane.flags;
922 ctx->dane.flags &= ~flags;
926 int SSL_dane_enable(SSL *s, const char *basedomain)
928 SSL_DANE *dane = &s->dane;
930 if (s->ctx->dane.mdmax == 0) {
931 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
934 if (dane->trecs != NULL) {
935 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
940 * Default SNI name. This rejects empty names, while set1_host below
941 * accepts them and disables host name checks. To avoid side-effects with
942 * invalid input, set the SNI name first.
944 if (s->ext.hostname == NULL) {
945 if (!SSL_set_tlsext_host_name(s, basedomain)) {
946 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
951 /* Primary RFC6125 reference identifier */
952 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
953 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
959 dane->dctx = &s->ctx->dane;
960 dane->trecs = sk_danetls_record_new_null();
962 if (dane->trecs == NULL) {
963 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
969 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
971 unsigned long orig = ssl->dane.flags;
973 ssl->dane.flags |= flags;
977 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
979 unsigned long orig = ssl->dane.flags;
981 ssl->dane.flags &= ~flags;
985 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
987 SSL_DANE *dane = &s->dane;
989 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
993 *mcert = dane->mcert;
995 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1000 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1001 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1003 SSL_DANE *dane = &s->dane;
1005 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1009 *usage = dane->mtlsa->usage;
1011 *selector = dane->mtlsa->selector;
1013 *mtype = dane->mtlsa->mtype;
1015 *data = dane->mtlsa->data;
1017 *dlen = dane->mtlsa->dlen;
1022 SSL_DANE *SSL_get0_dane(SSL *s)
1027 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1028 uint8_t mtype, unsigned char *data, size_t dlen)
1030 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1033 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1036 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1039 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1041 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1044 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1046 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1049 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1054 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1059 void SSL_certs_clear(SSL *s)
1061 ssl_cert_clear_certs(s->cert);
1064 void SSL_free(SSL *s)
1071 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1072 REF_PRINT_COUNT("SSL", s);
1075 REF_ASSERT_ISNT(i < 0);
1077 X509_VERIFY_PARAM_free(s->param);
1078 dane_final(&s->dane);
1079 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1081 /* Ignore return value */
1082 ssl_free_wbio_buffer(s);
1084 BIO_free_all(s->wbio);
1085 BIO_free_all(s->rbio);
1087 BUF_MEM_free(s->init_buf);
1089 /* add extra stuff */
1090 sk_SSL_CIPHER_free(s->cipher_list);
1091 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1093 /* Make the next call work :-) */
1094 if (s->session != NULL) {
1095 ssl_clear_bad_session(s);
1096 SSL_SESSION_free(s->session);
1098 SSL_SESSION_free(s->psksession);
1102 ssl_cert_free(s->cert);
1103 /* Free up if allocated */
1105 OPENSSL_free(s->ext.hostname);
1106 SSL_CTX_free(s->session_ctx);
1107 #ifndef OPENSSL_NO_EC
1108 OPENSSL_free(s->ext.ecpointformats);
1109 OPENSSL_free(s->ext.supportedgroups);
1110 #endif /* OPENSSL_NO_EC */
1111 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1112 #ifndef OPENSSL_NO_OCSP
1113 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1115 #ifndef OPENSSL_NO_CT
1116 SCT_LIST_free(s->scts);
1117 OPENSSL_free(s->ext.scts);
1119 OPENSSL_free(s->ext.ocsp.resp);
1120 OPENSSL_free(s->ext.alpn);
1121 OPENSSL_free(s->ext.tls13_cookie);
1122 OPENSSL_free(s->clienthello);
1124 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1126 sk_X509_pop_free(s->verified_chain, X509_free);
1128 if (s->method != NULL)
1129 s->method->ssl_free(s);
1131 RECORD_LAYER_release(&s->rlayer);
1133 SSL_CTX_free(s->ctx);
1135 ASYNC_WAIT_CTX_free(s->waitctx);
1137 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1138 OPENSSL_free(s->ext.npn);
1141 #ifndef OPENSSL_NO_SRTP
1142 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1145 RAND_DRBG_free(s->drbg);
1146 CRYPTO_THREAD_lock_free(s->lock);
1151 void SSL_set0_rbio(SSL *s, BIO *rbio)
1153 BIO_free_all(s->rbio);
1157 void SSL_set0_wbio(SSL *s, BIO *wbio)
1160 * If the output buffering BIO is still in place, remove it
1162 if (s->bbio != NULL)
1163 s->wbio = BIO_pop(s->wbio);
1165 BIO_free_all(s->wbio);
1168 /* Re-attach |bbio| to the new |wbio|. */
1169 if (s->bbio != NULL)
1170 s->wbio = BIO_push(s->bbio, s->wbio);
1173 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1176 * For historical reasons, this function has many different cases in
1177 * ownership handling.
1180 /* If nothing has changed, do nothing */
1181 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1185 * If the two arguments are equal then one fewer reference is granted by the
1186 * caller than we want to take
1188 if (rbio != NULL && rbio == wbio)
1192 * If only the wbio is changed only adopt one reference.
1194 if (rbio == SSL_get_rbio(s)) {
1195 SSL_set0_wbio(s, wbio);
1199 * There is an asymmetry here for historical reasons. If only the rbio is
1200 * changed AND the rbio and wbio were originally different, then we only
1201 * adopt one reference.
1203 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1204 SSL_set0_rbio(s, rbio);
1208 /* Otherwise, adopt both references. */
1209 SSL_set0_rbio(s, rbio);
1210 SSL_set0_wbio(s, wbio);
1213 BIO *SSL_get_rbio(const SSL *s)
1218 BIO *SSL_get_wbio(const SSL *s)
1220 if (s->bbio != NULL) {
1222 * If |bbio| is active, the true caller-configured BIO is its
1225 return BIO_next(s->bbio);
1230 int SSL_get_fd(const SSL *s)
1232 return SSL_get_rfd(s);
1235 int SSL_get_rfd(const SSL *s)
1240 b = SSL_get_rbio(s);
1241 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1243 BIO_get_fd(r, &ret);
1247 int SSL_get_wfd(const SSL *s)
1252 b = SSL_get_wbio(s);
1253 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1255 BIO_get_fd(r, &ret);
1259 #ifndef OPENSSL_NO_SOCK
1260 int SSL_set_fd(SSL *s, int fd)
1265 bio = BIO_new(BIO_s_socket());
1268 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1271 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1272 SSL_set_bio(s, bio, bio);
1278 int SSL_set_wfd(SSL *s, int fd)
1280 BIO *rbio = SSL_get_rbio(s);
1282 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1283 || (int)BIO_get_fd(rbio, NULL) != fd) {
1284 BIO *bio = BIO_new(BIO_s_socket());
1287 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1290 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1291 SSL_set0_wbio(s, bio);
1294 SSL_set0_wbio(s, rbio);
1299 int SSL_set_rfd(SSL *s, int fd)
1301 BIO *wbio = SSL_get_wbio(s);
1303 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1304 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1305 BIO *bio = BIO_new(BIO_s_socket());
1308 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1311 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1312 SSL_set0_rbio(s, bio);
1315 SSL_set0_rbio(s, wbio);
1322 /* return length of latest Finished message we sent, copy to 'buf' */
1323 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1327 if (s->s3 != NULL) {
1328 ret = s->s3->tmp.finish_md_len;
1331 memcpy(buf, s->s3->tmp.finish_md, count);
1336 /* return length of latest Finished message we expected, copy to 'buf' */
1337 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1341 if (s->s3 != NULL) {
1342 ret = s->s3->tmp.peer_finish_md_len;
1345 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1350 int SSL_get_verify_mode(const SSL *s)
1352 return (s->verify_mode);
1355 int SSL_get_verify_depth(const SSL *s)
1357 return X509_VERIFY_PARAM_get_depth(s->param);
1360 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1361 return (s->verify_callback);
1364 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1366 return (ctx->verify_mode);
1369 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1371 return X509_VERIFY_PARAM_get_depth(ctx->param);
1374 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1375 return (ctx->default_verify_callback);
1378 void SSL_set_verify(SSL *s, int mode,
1379 int (*callback) (int ok, X509_STORE_CTX *ctx))
1381 s->verify_mode = mode;
1382 if (callback != NULL)
1383 s->verify_callback = callback;
1386 void SSL_set_verify_depth(SSL *s, int depth)
1388 X509_VERIFY_PARAM_set_depth(s->param, depth);
1391 void SSL_set_read_ahead(SSL *s, int yes)
1393 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1396 int SSL_get_read_ahead(const SSL *s)
1398 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1401 int SSL_pending(const SSL *s)
1403 size_t pending = s->method->ssl_pending(s);
1406 * SSL_pending cannot work properly if read-ahead is enabled
1407 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1408 * impossible to fix since SSL_pending cannot report errors that may be
1409 * observed while scanning the new data. (Note that SSL_pending() is
1410 * often used as a boolean value, so we'd better not return -1.)
1412 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1413 * we just return INT_MAX.
1415 return pending < INT_MAX ? (int)pending : INT_MAX;
1418 int SSL_has_pending(const SSL *s)
1421 * Similar to SSL_pending() but returns a 1 to indicate that we have
1422 * unprocessed data available or 0 otherwise (as opposed to the number of
1423 * bytes available). Unlike SSL_pending() this will take into account
1424 * read_ahead data. A 1 return simply indicates that we have unprocessed
1425 * data. That data may not result in any application data, or we may fail
1426 * to parse the records for some reason.
1428 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1431 return RECORD_LAYER_read_pending(&s->rlayer);
1434 X509 *SSL_get_peer_certificate(const SSL *s)
1438 if ((s == NULL) || (s->session == NULL))
1441 r = s->session->peer;
1451 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1455 if ((s == NULL) || (s->session == NULL))
1458 r = s->session->peer_chain;
1461 * If we are a client, cert_chain includes the peer's own certificate; if
1462 * we are a server, it does not.
1469 * Now in theory, since the calling process own 't' it should be safe to
1470 * modify. We need to be able to read f without being hassled
1472 int SSL_copy_session_id(SSL *t, const SSL *f)
1475 /* Do we need to to SSL locking? */
1476 if (!SSL_set_session(t, SSL_get_session(f))) {
1481 * what if we are setup for one protocol version but want to talk another
1483 if (t->method != f->method) {
1484 t->method->ssl_free(t);
1485 t->method = f->method;
1486 if (t->method->ssl_new(t) == 0)
1490 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1491 ssl_cert_free(t->cert);
1493 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1500 /* Fix this so it checks all the valid key/cert options */
1501 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1503 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1504 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1507 if (ctx->cert->key->privatekey == NULL) {
1508 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1511 return (X509_check_private_key
1512 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1515 /* Fix this function so that it takes an optional type parameter */
1516 int SSL_check_private_key(const SSL *ssl)
1519 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1522 if (ssl->cert->key->x509 == NULL) {
1523 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1526 if (ssl->cert->key->privatekey == NULL) {
1527 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1530 return (X509_check_private_key(ssl->cert->key->x509,
1531 ssl->cert->key->privatekey));
1534 int SSL_waiting_for_async(SSL *s)
1542 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1544 ASYNC_WAIT_CTX *ctx = s->waitctx;
1548 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1551 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1552 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1554 ASYNC_WAIT_CTX *ctx = s->waitctx;
1558 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1562 int SSL_accept(SSL *s)
1564 if (s->handshake_func == NULL) {
1565 /* Not properly initialized yet */
1566 SSL_set_accept_state(s);
1569 return SSL_do_handshake(s);
1572 int SSL_connect(SSL *s)
1574 if (s->handshake_func == NULL) {
1575 /* Not properly initialized yet */
1576 SSL_set_connect_state(s);
1579 return SSL_do_handshake(s);
1582 long SSL_get_default_timeout(const SSL *s)
1584 return (s->method->get_timeout());
1587 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1588 int (*func) (void *))
1591 if (s->waitctx == NULL) {
1592 s->waitctx = ASYNC_WAIT_CTX_new();
1593 if (s->waitctx == NULL)
1596 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1597 sizeof(struct ssl_async_args))) {
1599 s->rwstate = SSL_NOTHING;
1600 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1603 s->rwstate = SSL_ASYNC_PAUSED;
1606 s->rwstate = SSL_ASYNC_NO_JOBS;
1612 s->rwstate = SSL_NOTHING;
1613 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1614 /* Shouldn't happen */
1619 static int ssl_io_intern(void *vargs)
1621 struct ssl_async_args *args;
1626 args = (struct ssl_async_args *)vargs;
1630 switch (args->type) {
1632 return args->f.func_read(s, buf, num, &s->asyncrw);
1634 return args->f.func_write(s, buf, num, &s->asyncrw);
1636 return args->f.func_other(s);
1641 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1643 if (s->handshake_func == NULL) {
1644 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1648 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1649 s->rwstate = SSL_NOTHING;
1653 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1654 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1655 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1659 * If we are a client and haven't received the ServerHello etc then we
1662 ossl_statem_check_finish_init(s, 0);
1664 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1665 struct ssl_async_args args;
1671 args.type = READFUNC;
1672 args.f.func_read = s->method->ssl_read;
1674 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1675 *readbytes = s->asyncrw;
1678 return s->method->ssl_read(s, buf, num, readbytes);
1682 int SSL_read(SSL *s, void *buf, int num)
1688 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1692 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1695 * The cast is safe here because ret should be <= INT_MAX because num is
1699 ret = (int)readbytes;
1704 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1706 int ret = ssl_read_internal(s, buf, num, readbytes);
1713 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1718 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1719 return SSL_READ_EARLY_DATA_ERROR;
1722 switch (s->early_data_state) {
1723 case SSL_EARLY_DATA_NONE:
1724 if (!SSL_in_before(s)) {
1725 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1726 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1727 return SSL_READ_EARLY_DATA_ERROR;
1731 case SSL_EARLY_DATA_ACCEPT_RETRY:
1732 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1733 ret = SSL_accept(s);
1736 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1737 return SSL_READ_EARLY_DATA_ERROR;
1741 case SSL_EARLY_DATA_READ_RETRY:
1742 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1743 s->early_data_state = SSL_EARLY_DATA_READING;
1744 ret = SSL_read_ex(s, buf, num, readbytes);
1746 * State machine will update early_data_state to
1747 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1750 if (ret > 0 || (ret <= 0 && s->early_data_state
1751 != SSL_EARLY_DATA_FINISHED_READING)) {
1752 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1753 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1754 : SSL_READ_EARLY_DATA_ERROR;
1757 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1760 return SSL_READ_EARLY_DATA_FINISH;
1763 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1764 return SSL_READ_EARLY_DATA_ERROR;
1768 int SSL_get_early_data_status(const SSL *s)
1770 return s->ext.early_data;
1773 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1775 if (s->handshake_func == NULL) {
1776 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1780 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1783 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1784 struct ssl_async_args args;
1790 args.type = READFUNC;
1791 args.f.func_read = s->method->ssl_peek;
1793 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1794 *readbytes = s->asyncrw;
1797 return s->method->ssl_peek(s, buf, num, readbytes);
1801 int SSL_peek(SSL *s, void *buf, int num)
1807 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1811 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1814 * The cast is safe here because ret should be <= INT_MAX because num is
1818 ret = (int)readbytes;
1824 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1826 int ret = ssl_peek_internal(s, buf, num, readbytes);
1833 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1835 if (s->handshake_func == NULL) {
1836 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1840 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1841 s->rwstate = SSL_NOTHING;
1842 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1846 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1847 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1848 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1849 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1852 /* If we are a client and haven't sent the Finished we better do that */
1853 ossl_statem_check_finish_init(s, 1);
1855 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1857 struct ssl_async_args args;
1860 args.buf = (void *)buf;
1862 args.type = WRITEFUNC;
1863 args.f.func_write = s->method->ssl_write;
1865 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1866 *written = s->asyncrw;
1869 return s->method->ssl_write(s, buf, num, written);
1873 int SSL_write(SSL *s, const void *buf, int num)
1879 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1883 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1886 * The cast is safe here because ret should be <= INT_MAX because num is
1895 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1897 int ret = ssl_write_internal(s, buf, num, written);
1904 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1906 int ret, early_data_state;
1908 switch (s->early_data_state) {
1909 case SSL_EARLY_DATA_NONE:
1911 || !SSL_in_before(s)
1912 || s->session == NULL
1913 || s->session->ext.max_early_data == 0) {
1914 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1915 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1920 case SSL_EARLY_DATA_CONNECT_RETRY:
1921 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1922 ret = SSL_connect(s);
1925 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1930 case SSL_EARLY_DATA_WRITE_RETRY:
1931 s->early_data_state = SSL_EARLY_DATA_WRITING;
1932 ret = SSL_write_ex(s, buf, num, written);
1933 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1936 case SSL_EARLY_DATA_FINISHED_READING:
1937 case SSL_EARLY_DATA_READ_RETRY:
1938 early_data_state = s->early_data_state;
1939 /* We are a server writing to an unauthenticated client */
1940 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1941 ret = SSL_write_ex(s, buf, num, written);
1942 s->early_data_state = early_data_state;
1946 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1951 int SSL_shutdown(SSL *s)
1954 * Note that this function behaves differently from what one might
1955 * expect. Return values are 0 for no success (yet), 1 for success; but
1956 * calling it once is usually not enough, even if blocking I/O is used
1957 * (see ssl3_shutdown).
1960 if (s->handshake_func == NULL) {
1961 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1965 if (!SSL_in_init(s)) {
1966 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1967 struct ssl_async_args args;
1970 args.type = OTHERFUNC;
1971 args.f.func_other = s->method->ssl_shutdown;
1973 return ssl_start_async_job(s, &args, ssl_io_intern);
1975 return s->method->ssl_shutdown(s);
1978 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1983 int SSL_key_update(SSL *s, int updatetype)
1986 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1987 * negotiated, and that it is appropriate to call SSL_key_update() instead
1988 * of SSL_renegotiate().
1990 if (!SSL_IS_TLS13(s)) {
1991 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
1995 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
1996 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
1997 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2001 if (!SSL_is_init_finished(s)) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2006 ossl_statem_set_in_init(s, 1);
2007 s->key_update = updatetype;
2011 int SSL_get_key_update_type(SSL *s)
2013 return s->key_update;
2016 int SSL_renegotiate(SSL *s)
2018 if (SSL_IS_TLS13(s)) {
2019 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2023 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2024 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2031 return (s->method->ssl_renegotiate(s));
2034 int SSL_renegotiate_abbreviated(SSL *s)
2036 if (SSL_IS_TLS13(s)) {
2037 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2041 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2042 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2049 return (s->method->ssl_renegotiate(s));
2052 int SSL_renegotiate_pending(SSL *s)
2055 * becomes true when negotiation is requested; false again once a
2056 * handshake has finished
2058 return (s->renegotiate != 0);
2061 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2066 case SSL_CTRL_GET_READ_AHEAD:
2067 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2068 case SSL_CTRL_SET_READ_AHEAD:
2069 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2070 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2073 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2074 s->msg_callback_arg = parg;
2078 return (s->mode |= larg);
2079 case SSL_CTRL_CLEAR_MODE:
2080 return (s->mode &= ~larg);
2081 case SSL_CTRL_GET_MAX_CERT_LIST:
2082 return (long)(s->max_cert_list);
2083 case SSL_CTRL_SET_MAX_CERT_LIST:
2086 l = (long)s->max_cert_list;
2087 s->max_cert_list = (size_t)larg;
2089 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2090 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2092 s->max_send_fragment = larg;
2093 if (s->max_send_fragment < s->split_send_fragment)
2094 s->split_send_fragment = s->max_send_fragment;
2096 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2097 if ((size_t)larg > s->max_send_fragment || larg == 0)
2099 s->split_send_fragment = larg;
2101 case SSL_CTRL_SET_MAX_PIPELINES:
2102 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2104 s->max_pipelines = larg;
2106 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2108 case SSL_CTRL_GET_RI_SUPPORT:
2110 return s->s3->send_connection_binding;
2113 case SSL_CTRL_CERT_FLAGS:
2114 return (s->cert->cert_flags |= larg);
2115 case SSL_CTRL_CLEAR_CERT_FLAGS:
2116 return (s->cert->cert_flags &= ~larg);
2118 case SSL_CTRL_GET_RAW_CIPHERLIST:
2120 if (s->s3->tmp.ciphers_raw == NULL)
2122 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2123 return (int)s->s3->tmp.ciphers_rawlen;
2125 return TLS_CIPHER_LEN;
2127 case SSL_CTRL_GET_EXTMS_SUPPORT:
2128 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2130 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2134 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2135 return ssl_check_allowed_versions(larg, s->max_proto_version)
2136 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2137 &s->min_proto_version);
2138 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2139 return ssl_check_allowed_versions(s->min_proto_version, larg)
2140 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2141 &s->max_proto_version);
2143 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2147 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2150 case SSL_CTRL_SET_MSG_CALLBACK:
2151 s->msg_callback = (void (*)
2152 (int write_p, int version, int content_type,
2153 const void *buf, size_t len, SSL *ssl,
2158 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2162 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2164 return ctx->sessions;
2167 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2170 /* For some cases with ctx == NULL perform syntax checks */
2173 #ifndef OPENSSL_NO_EC
2174 case SSL_CTRL_SET_GROUPS_LIST:
2175 return tls1_set_groups_list(NULL, NULL, parg);
2177 case SSL_CTRL_SET_SIGALGS_LIST:
2178 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2179 return tls1_set_sigalgs_list(NULL, parg, 0);
2186 case SSL_CTRL_GET_READ_AHEAD:
2187 return (ctx->read_ahead);
2188 case SSL_CTRL_SET_READ_AHEAD:
2189 l = ctx->read_ahead;
2190 ctx->read_ahead = larg;
2193 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2194 ctx->msg_callback_arg = parg;
2197 case SSL_CTRL_GET_MAX_CERT_LIST:
2198 return (long)(ctx->max_cert_list);
2199 case SSL_CTRL_SET_MAX_CERT_LIST:
2202 l = (long)ctx->max_cert_list;
2203 ctx->max_cert_list = (size_t)larg;
2206 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2209 l = (long)ctx->session_cache_size;
2210 ctx->session_cache_size = (size_t)larg;
2212 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2213 return (long)(ctx->session_cache_size);
2214 case SSL_CTRL_SET_SESS_CACHE_MODE:
2215 l = ctx->session_cache_mode;
2216 ctx->session_cache_mode = larg;
2218 case SSL_CTRL_GET_SESS_CACHE_MODE:
2219 return (ctx->session_cache_mode);
2221 case SSL_CTRL_SESS_NUMBER:
2222 return (lh_SSL_SESSION_num_items(ctx->sessions));
2223 case SSL_CTRL_SESS_CONNECT:
2224 return (ctx->stats.sess_connect);
2225 case SSL_CTRL_SESS_CONNECT_GOOD:
2226 return (ctx->stats.sess_connect_good);
2227 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2228 return (ctx->stats.sess_connect_renegotiate);
2229 case SSL_CTRL_SESS_ACCEPT:
2230 return (ctx->stats.sess_accept);
2231 case SSL_CTRL_SESS_ACCEPT_GOOD:
2232 return (ctx->stats.sess_accept_good);
2233 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2234 return (ctx->stats.sess_accept_renegotiate);
2235 case SSL_CTRL_SESS_HIT:
2236 return (ctx->stats.sess_hit);
2237 case SSL_CTRL_SESS_CB_HIT:
2238 return (ctx->stats.sess_cb_hit);
2239 case SSL_CTRL_SESS_MISSES:
2240 return (ctx->stats.sess_miss);
2241 case SSL_CTRL_SESS_TIMEOUTS:
2242 return (ctx->stats.sess_timeout);
2243 case SSL_CTRL_SESS_CACHE_FULL:
2244 return (ctx->stats.sess_cache_full);
2246 return (ctx->mode |= larg);
2247 case SSL_CTRL_CLEAR_MODE:
2248 return (ctx->mode &= ~larg);
2249 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2250 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2252 ctx->max_send_fragment = larg;
2253 if (ctx->max_send_fragment < ctx->split_send_fragment)
2254 ctx->split_send_fragment = ctx->max_send_fragment;
2256 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2257 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2259 ctx->split_send_fragment = larg;
2261 case SSL_CTRL_SET_MAX_PIPELINES:
2262 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2264 ctx->max_pipelines = larg;
2266 case SSL_CTRL_CERT_FLAGS:
2267 return (ctx->cert->cert_flags |= larg);
2268 case SSL_CTRL_CLEAR_CERT_FLAGS:
2269 return (ctx->cert->cert_flags &= ~larg);
2270 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2271 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2272 && ssl_set_version_bound(ctx->method->version, (int)larg,
2273 &ctx->min_proto_version);
2274 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2275 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2276 && ssl_set_version_bound(ctx->method->version, (int)larg,
2277 &ctx->max_proto_version);
2279 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2283 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2286 case SSL_CTRL_SET_MSG_CALLBACK:
2287 ctx->msg_callback = (void (*)
2288 (int write_p, int version, int content_type,
2289 const void *buf, size_t len, SSL *ssl,
2294 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2298 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2307 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2308 const SSL_CIPHER *const *bp)
2310 if ((*ap)->id > (*bp)->id)
2312 if ((*ap)->id < (*bp)->id)
2317 /** return a STACK of the ciphers available for the SSL and in order of
2319 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2322 if (s->cipher_list != NULL) {
2323 return (s->cipher_list);
2324 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2325 return (s->ctx->cipher_list);
2331 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2333 if ((s == NULL) || (s->session == NULL) || !s->server)
2335 return s->session->ciphers;
2338 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2340 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2342 ciphers = SSL_get_ciphers(s);
2345 ssl_set_client_disabled(s);
2346 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2347 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2348 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2350 sk = sk_SSL_CIPHER_new_null();
2353 if (!sk_SSL_CIPHER_push(sk, c)) {
2354 sk_SSL_CIPHER_free(sk);
2362 /** return a STACK of the ciphers available for the SSL and in order of
2364 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2367 if (s->cipher_list_by_id != NULL) {
2368 return (s->cipher_list_by_id);
2369 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2370 return (s->ctx->cipher_list_by_id);
2376 /** The old interface to get the same thing as SSL_get_ciphers() */
2377 const char *SSL_get_cipher_list(const SSL *s, int n)
2379 const SSL_CIPHER *c;
2380 STACK_OF(SSL_CIPHER) *sk;
2384 sk = SSL_get_ciphers(s);
2385 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2387 c = sk_SSL_CIPHER_value(sk, n);
2393 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2395 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2398 return ctx->cipher_list;
2402 /** specify the ciphers to be used by default by the SSL_CTX */
2403 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2405 STACK_OF(SSL_CIPHER) *sk;
2407 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2408 &ctx->cipher_list_by_id, str, ctx->cert);
2410 * ssl_create_cipher_list may return an empty stack if it was unable to
2411 * find a cipher matching the given rule string (for example if the rule
2412 * string specifies a cipher which has been disabled). This is not an
2413 * error as far as ssl_create_cipher_list is concerned, and hence
2414 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2418 else if (sk_SSL_CIPHER_num(sk) == 0) {
2419 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2425 /** specify the ciphers to be used by the SSL */
2426 int SSL_set_cipher_list(SSL *s, const char *str)
2428 STACK_OF(SSL_CIPHER) *sk;
2430 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2431 &s->cipher_list_by_id, str, s->cert);
2432 /* see comment in SSL_CTX_set_cipher_list */
2435 else if (sk_SSL_CIPHER_num(sk) == 0) {
2436 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2442 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2445 STACK_OF(SSL_CIPHER) *sk;
2446 const SSL_CIPHER *c;
2449 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2453 sk = s->session->ciphers;
2455 if (sk_SSL_CIPHER_num(sk) == 0)
2458 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2461 c = sk_SSL_CIPHER_value(sk, i);
2462 n = strlen(c->name);
2469 memcpy(p, c->name, n + 1);
2478 /** return a servername extension value if provided in Client Hello, or NULL.
2479 * So far, only host_name types are defined (RFC 3546).
2482 const char *SSL_get_servername(const SSL *s, const int type)
2484 if (type != TLSEXT_NAMETYPE_host_name)
2487 return s->session && !s->ext.hostname ?
2488 s->session->ext.hostname : s->ext.hostname;
2491 int SSL_get_servername_type(const SSL *s)
2494 && (!s->ext.hostname ? s->session->
2495 ext.hostname : s->ext.hostname))
2496 return TLSEXT_NAMETYPE_host_name;
2501 * SSL_select_next_proto implements the standard protocol selection. It is
2502 * expected that this function is called from the callback set by
2503 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2504 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2505 * not included in the length. A byte string of length 0 is invalid. No byte
2506 * string may be truncated. The current, but experimental algorithm for
2507 * selecting the protocol is: 1) If the server doesn't support NPN then this
2508 * is indicated to the callback. In this case, the client application has to
2509 * abort the connection or have a default application level protocol. 2) If
2510 * the server supports NPN, but advertises an empty list then the client
2511 * selects the first protocol in its list, but indicates via the API that this
2512 * fallback case was enacted. 3) Otherwise, the client finds the first
2513 * protocol in the server's list that it supports and selects this protocol.
2514 * This is because it's assumed that the server has better information about
2515 * which protocol a client should use. 4) If the client doesn't support any
2516 * of the server's advertised protocols, then this is treated the same as
2517 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2518 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2520 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2521 const unsigned char *server,
2522 unsigned int server_len,
2523 const unsigned char *client, unsigned int client_len)
2526 const unsigned char *result;
2527 int status = OPENSSL_NPN_UNSUPPORTED;
2530 * For each protocol in server preference order, see if we support it.
2532 for (i = 0; i < server_len;) {
2533 for (j = 0; j < client_len;) {
2534 if (server[i] == client[j] &&
2535 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2536 /* We found a match */
2537 result = &server[i];
2538 status = OPENSSL_NPN_NEGOTIATED;
2548 /* There's no overlap between our protocols and the server's list. */
2550 status = OPENSSL_NPN_NO_OVERLAP;
2553 *out = (unsigned char *)result + 1;
2554 *outlen = result[0];
2558 #ifndef OPENSSL_NO_NEXTPROTONEG
2560 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2561 * client's requested protocol for this connection and returns 0. If the
2562 * client didn't request any protocol, then *data is set to NULL. Note that
2563 * the client can request any protocol it chooses. The value returned from
2564 * this function need not be a member of the list of supported protocols
2565 * provided by the callback.
2567 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2574 *len = (unsigned int)s->ext.npn_len;
2579 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2580 * a TLS server needs a list of supported protocols for Next Protocol
2581 * Negotiation. The returned list must be in wire format. The list is
2582 * returned by setting |out| to point to it and |outlen| to its length. This
2583 * memory will not be modified, but one should assume that the SSL* keeps a
2584 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2585 * wishes to advertise. Otherwise, no such extension will be included in the
2588 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2589 SSL_CTX_npn_advertised_cb_func cb,
2592 ctx->ext.npn_advertised_cb = cb;
2593 ctx->ext.npn_advertised_cb_arg = arg;
2597 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2598 * client needs to select a protocol from the server's provided list. |out|
2599 * must be set to point to the selected protocol (which may be within |in|).
2600 * The length of the protocol name must be written into |outlen|. The
2601 * server's advertised protocols are provided in |in| and |inlen|. The
2602 * callback can assume that |in| is syntactically valid. The client must
2603 * select a protocol. It is fatal to the connection if this callback returns
2604 * a value other than SSL_TLSEXT_ERR_OK.
2606 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2607 SSL_CTX_npn_select_cb_func cb,
2610 ctx->ext.npn_select_cb = cb;
2611 ctx->ext.npn_select_cb_arg = arg;
2616 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2617 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2618 * length-prefixed strings). Returns 0 on success.
2620 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2621 unsigned int protos_len)
2623 OPENSSL_free(ctx->ext.alpn);
2624 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2625 if (ctx->ext.alpn == NULL) {
2626 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2629 ctx->ext.alpn_len = protos_len;
2635 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2636 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2637 * length-prefixed strings). Returns 0 on success.
2639 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2640 unsigned int protos_len)
2642 OPENSSL_free(ssl->ext.alpn);
2643 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2644 if (ssl->ext.alpn == NULL) {
2645 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2648 ssl->ext.alpn_len = protos_len;
2654 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2655 * called during ClientHello processing in order to select an ALPN protocol
2656 * from the client's list of offered protocols.
2658 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2659 SSL_CTX_alpn_select_cb_func cb,
2662 ctx->ext.alpn_select_cb = cb;
2663 ctx->ext.alpn_select_cb_arg = arg;
2667 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2668 * On return it sets |*data| to point to |*len| bytes of protocol name
2669 * (not including the leading length-prefix byte). If the server didn't
2670 * respond with a negotiated protocol then |*len| will be zero.
2672 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2677 *data = ssl->s3->alpn_selected;
2681 *len = (unsigned int)ssl->s3->alpn_selected_len;
2684 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2685 const char *label, size_t llen,
2686 const unsigned char *context, size_t contextlen,
2689 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2692 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2694 contextlen, use_context);
2697 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2699 const unsigned char *session_id = a->session_id;
2701 unsigned char tmp_storage[4];
2703 if (a->session_id_length < sizeof(tmp_storage)) {
2704 memset(tmp_storage, 0, sizeof(tmp_storage));
2705 memcpy(tmp_storage, a->session_id, a->session_id_length);
2706 session_id = tmp_storage;
2710 ((unsigned long)session_id[0]) |
2711 ((unsigned long)session_id[1] << 8L) |
2712 ((unsigned long)session_id[2] << 16L) |
2713 ((unsigned long)session_id[3] << 24L);
2718 * NB: If this function (or indeed the hash function which uses a sort of
2719 * coarser function than this one) is changed, ensure
2720 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2721 * being able to construct an SSL_SESSION that will collide with any existing
2722 * session with a matching session ID.
2724 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2726 if (a->ssl_version != b->ssl_version)
2728 if (a->session_id_length != b->session_id_length)
2730 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2734 * These wrapper functions should remain rather than redeclaring
2735 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2736 * variable. The reason is that the functions aren't static, they're exposed
2740 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2742 SSL_CTX *ret = NULL;
2745 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2749 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2752 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2753 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2756 ret = OPENSSL_zalloc(sizeof(*ret));
2761 ret->min_proto_version = 0;
2762 ret->max_proto_version = 0;
2763 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2764 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2765 /* We take the system default. */
2766 ret->session_timeout = meth->get_timeout();
2767 ret->references = 1;
2768 ret->lock = CRYPTO_THREAD_lock_new();
2769 if (ret->lock == NULL) {
2770 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2774 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2775 ret->verify_mode = SSL_VERIFY_NONE;
2776 if ((ret->cert = ssl_cert_new()) == NULL)
2779 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2780 if (ret->sessions == NULL)
2782 ret->cert_store = X509_STORE_new();
2783 if (ret->cert_store == NULL)
2785 #ifndef OPENSSL_NO_CT
2786 ret->ctlog_store = CTLOG_STORE_new();
2787 if (ret->ctlog_store == NULL)
2790 if (!ssl_create_cipher_list(ret->method,
2791 &ret->cipher_list, &ret->cipher_list_by_id,
2792 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2793 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2794 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2798 ret->param = X509_VERIFY_PARAM_new();
2799 if (ret->param == NULL)
2802 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2803 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2806 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2807 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2811 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2814 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2817 /* No compression for DTLS */
2818 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2819 ret->comp_methods = SSL_COMP_get_compression_methods();
2821 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2822 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2824 /* Setup RFC5077 ticket keys */
2825 if ((RAND_bytes(ret->ext.tick_key_name,
2826 sizeof(ret->ext.tick_key_name)) <= 0)
2827 || (RAND_bytes(ret->ext.tick_hmac_key,
2828 sizeof(ret->ext.tick_hmac_key)) <= 0)
2829 || (RAND_bytes(ret->ext.tick_aes_key,
2830 sizeof(ret->ext.tick_aes_key)) <= 0))
2831 ret->options |= SSL_OP_NO_TICKET;
2833 #ifndef OPENSSL_NO_SRP
2834 if (!SSL_CTX_SRP_CTX_init(ret))
2837 #ifndef OPENSSL_NO_ENGINE
2838 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2839 # define eng_strx(x) #x
2840 # define eng_str(x) eng_strx(x)
2841 /* Use specific client engine automatically... ignore errors */
2844 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2847 ENGINE_load_builtin_engines();
2848 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2850 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2856 * Default is to connect to non-RI servers. When RI is more widely
2857 * deployed might change this.
2859 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2861 * Disable compression by default to prevent CRIME. Applications can
2862 * re-enable compression by configuring
2863 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2864 * or by using the SSL_CONF library.
2866 ret->options |= SSL_OP_NO_COMPRESSION;
2868 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2871 * Default max early data is a fully loaded single record. Could be split
2872 * across multiple records in practice
2874 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2878 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2884 int SSL_CTX_up_ref(SSL_CTX *ctx)
2888 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2891 REF_PRINT_COUNT("SSL_CTX", ctx);
2892 REF_ASSERT_ISNT(i < 2);
2893 return ((i > 1) ? 1 : 0);
2896 void SSL_CTX_free(SSL_CTX *a)
2903 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2904 REF_PRINT_COUNT("SSL_CTX", a);
2907 REF_ASSERT_ISNT(i < 0);
2909 X509_VERIFY_PARAM_free(a->param);
2910 dane_ctx_final(&a->dane);
2913 * Free internal session cache. However: the remove_cb() may reference
2914 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2915 * after the sessions were flushed.
2916 * As the ex_data handling routines might also touch the session cache,
2917 * the most secure solution seems to be: empty (flush) the cache, then
2918 * free ex_data, then finally free the cache.
2919 * (See ticket [openssl.org #212].)
2921 if (a->sessions != NULL)
2922 SSL_CTX_flush_sessions(a, 0);
2924 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2925 lh_SSL_SESSION_free(a->sessions);
2926 X509_STORE_free(a->cert_store);
2927 #ifndef OPENSSL_NO_CT
2928 CTLOG_STORE_free(a->ctlog_store);
2930 sk_SSL_CIPHER_free(a->cipher_list);
2931 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2932 ssl_cert_free(a->cert);
2933 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2934 sk_X509_pop_free(a->extra_certs, X509_free);
2935 a->comp_methods = NULL;
2936 #ifndef OPENSSL_NO_SRTP
2937 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2939 #ifndef OPENSSL_NO_SRP
2940 SSL_CTX_SRP_CTX_free(a);
2942 #ifndef OPENSSL_NO_ENGINE
2943 ENGINE_finish(a->client_cert_engine);
2946 #ifndef OPENSSL_NO_EC
2947 OPENSSL_free(a->ext.ecpointformats);
2948 OPENSSL_free(a->ext.supportedgroups);
2950 OPENSSL_free(a->ext.alpn);
2952 CRYPTO_THREAD_lock_free(a->lock);
2957 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2959 ctx->default_passwd_callback = cb;
2962 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2964 ctx->default_passwd_callback_userdata = u;
2967 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2969 return ctx->default_passwd_callback;
2972 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2974 return ctx->default_passwd_callback_userdata;
2977 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2979 s->default_passwd_callback = cb;
2982 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2984 s->default_passwd_callback_userdata = u;
2987 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2989 return s->default_passwd_callback;
2992 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2994 return s->default_passwd_callback_userdata;
2997 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2998 int (*cb) (X509_STORE_CTX *, void *),
3001 ctx->app_verify_callback = cb;
3002 ctx->app_verify_arg = arg;
3005 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3006 int (*cb) (int, X509_STORE_CTX *))
3008 ctx->verify_mode = mode;
3009 ctx->default_verify_callback = cb;
3012 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3014 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3017 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3019 ssl_cert_set_cert_cb(c->cert, cb, arg);
3022 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3024 ssl_cert_set_cert_cb(s->cert, cb, arg);
3027 void ssl_set_masks(SSL *s)
3030 uint32_t *pvalid = s->s3->tmp.valid_flags;
3031 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3032 unsigned long mask_k, mask_a;
3033 #ifndef OPENSSL_NO_EC
3034 int have_ecc_cert, ecdsa_ok;
3039 #ifndef OPENSSL_NO_DH
3040 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3045 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3046 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3047 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3048 #ifndef OPENSSL_NO_EC
3049 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3055 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3056 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3059 #ifndef OPENSSL_NO_GOST
3060 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3061 mask_k |= SSL_kGOST;
3062 mask_a |= SSL_aGOST12;
3064 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3065 mask_k |= SSL_kGOST;
3066 mask_a |= SSL_aGOST12;
3068 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3069 mask_k |= SSL_kGOST;
3070 mask_a |= SSL_aGOST01;
3080 if (rsa_enc || rsa_sign) {
3088 mask_a |= SSL_aNULL;
3091 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3092 * depending on the key usage extension.
3094 #ifndef OPENSSL_NO_EC
3095 if (have_ecc_cert) {
3097 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3098 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3099 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3102 mask_a |= SSL_aECDSA;
3104 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3105 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3106 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3107 && TLS1_get_version(s) == TLS1_2_VERSION)
3108 mask_a |= SSL_aECDSA;
3111 #ifndef OPENSSL_NO_EC
3112 mask_k |= SSL_kECDHE;
3115 #ifndef OPENSSL_NO_PSK
3118 if (mask_k & SSL_kRSA)
3119 mask_k |= SSL_kRSAPSK;
3120 if (mask_k & SSL_kDHE)
3121 mask_k |= SSL_kDHEPSK;
3122 if (mask_k & SSL_kECDHE)
3123 mask_k |= SSL_kECDHEPSK;
3126 s->s3->tmp.mask_k = mask_k;
3127 s->s3->tmp.mask_a = mask_a;
3130 #ifndef OPENSSL_NO_EC
3132 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3134 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3135 /* key usage, if present, must allow signing */
3136 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3137 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3138 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3142 return 1; /* all checks are ok */
3147 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3148 size_t *serverinfo_length)
3150 CERT_PKEY *cpk = s->s3->tmp.cert;
3151 *serverinfo_length = 0;
3153 if (cpk == NULL || cpk->serverinfo == NULL)
3156 *serverinfo = cpk->serverinfo;
3157 *serverinfo_length = cpk->serverinfo_length;
3161 void ssl_update_cache(SSL *s, int mode)
3166 * If the session_id_length is 0, we are not supposed to cache it, and it
3167 * would be rather hard to do anyway :-)
3169 if (s->session->session_id_length == 0)
3172 i = s->session_ctx->session_cache_mode;
3174 && (!s->hit || SSL_IS_TLS13(s))
3175 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
3176 || SSL_CTX_add_session(s->session_ctx, s->session))
3177 && s->session_ctx->new_session_cb != NULL) {
3178 SSL_SESSION_up_ref(s->session);
3179 if (!s->session_ctx->new_session_cb(s, s->session))
3180 SSL_SESSION_free(s->session);
3183 /* auto flush every 255 connections */
3184 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3185 if ((((mode & SSL_SESS_CACHE_CLIENT)
3186 ? s->session_ctx->stats.sess_connect_good
3187 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3188 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3193 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3198 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3203 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3207 if (s->method != meth) {
3208 const SSL_METHOD *sm = s->method;
3209 int (*hf) (SSL *) = s->handshake_func;
3211 if (sm->version == meth->version)
3216 ret = s->method->ssl_new(s);
3219 if (hf == sm->ssl_connect)
3220 s->handshake_func = meth->ssl_connect;
3221 else if (hf == sm->ssl_accept)
3222 s->handshake_func = meth->ssl_accept;
3227 int SSL_get_error(const SSL *s, int i)
3234 return (SSL_ERROR_NONE);
3237 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3238 * where we do encode the error
3240 if ((l = ERR_peek_error()) != 0) {
3241 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3242 return (SSL_ERROR_SYSCALL);
3244 return (SSL_ERROR_SSL);
3247 if (SSL_want_read(s)) {
3248 bio = SSL_get_rbio(s);
3249 if (BIO_should_read(bio))
3250 return (SSL_ERROR_WANT_READ);
3251 else if (BIO_should_write(bio))
3253 * This one doesn't make too much sense ... We never try to write
3254 * to the rbio, and an application program where rbio and wbio
3255 * are separate couldn't even know what it should wait for.
3256 * However if we ever set s->rwstate incorrectly (so that we have
3257 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3258 * wbio *are* the same, this test works around that bug; so it
3259 * might be safer to keep it.
3261 return (SSL_ERROR_WANT_WRITE);
3262 else if (BIO_should_io_special(bio)) {
3263 reason = BIO_get_retry_reason(bio);
3264 if (reason == BIO_RR_CONNECT)
3265 return (SSL_ERROR_WANT_CONNECT);
3266 else if (reason == BIO_RR_ACCEPT)
3267 return (SSL_ERROR_WANT_ACCEPT);
3269 return (SSL_ERROR_SYSCALL); /* unknown */
3273 if (SSL_want_write(s)) {
3274 /* Access wbio directly - in order to use the buffered bio if present */
3276 if (BIO_should_write(bio))
3277 return (SSL_ERROR_WANT_WRITE);
3278 else if (BIO_should_read(bio))
3280 * See above (SSL_want_read(s) with BIO_should_write(bio))
3282 return (SSL_ERROR_WANT_READ);
3283 else if (BIO_should_io_special(bio)) {
3284 reason = BIO_get_retry_reason(bio);
3285 if (reason == BIO_RR_CONNECT)
3286 return (SSL_ERROR_WANT_CONNECT);
3287 else if (reason == BIO_RR_ACCEPT)
3288 return (SSL_ERROR_WANT_ACCEPT);
3290 return (SSL_ERROR_SYSCALL);
3293 if (SSL_want_x509_lookup(s))
3294 return (SSL_ERROR_WANT_X509_LOOKUP);
3295 if (SSL_want_async(s))
3296 return SSL_ERROR_WANT_ASYNC;
3297 if (SSL_want_async_job(s))
3298 return SSL_ERROR_WANT_ASYNC_JOB;
3299 if (SSL_want_early(s))
3300 return SSL_ERROR_WANT_EARLY;
3302 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3303 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3304 return (SSL_ERROR_ZERO_RETURN);
3306 return (SSL_ERROR_SYSCALL);
3309 static int ssl_do_handshake_intern(void *vargs)
3311 struct ssl_async_args *args;
3314 args = (struct ssl_async_args *)vargs;
3317 return s->handshake_func(s);
3320 int SSL_do_handshake(SSL *s)
3324 if (s->handshake_func == NULL) {
3325 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3329 ossl_statem_check_finish_init(s, -1);
3331 s->method->ssl_renegotiate_check(s, 0);
3333 if (SSL_is_server(s)) {
3334 /* clear SNI settings at server-side */
3335 OPENSSL_free(s->ext.hostname);
3336 s->ext.hostname = NULL;
3339 if (SSL_in_init(s) || SSL_in_before(s)) {
3340 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3341 struct ssl_async_args args;
3345 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3347 ret = s->handshake_func(s);
3353 void SSL_set_accept_state(SSL *s)
3357 ossl_statem_clear(s);
3358 s->handshake_func = s->method->ssl_accept;
3362 void SSL_set_connect_state(SSL *s)
3366 ossl_statem_clear(s);
3367 s->handshake_func = s->method->ssl_connect;
3371 int ssl_undefined_function(SSL *s)
3373 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3377 int ssl_undefined_void_function(void)
3379 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3380 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3384 int ssl_undefined_const_function(const SSL *s)
3389 const SSL_METHOD *ssl_bad_method(int ver)
3391 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3395 const char *ssl_protocol_to_string(int version)
3399 case TLS1_3_VERSION:
3402 case TLS1_2_VERSION:
3405 case TLS1_1_VERSION:
3420 case DTLS1_2_VERSION:
3428 const char *SSL_get_version(const SSL *s)
3430 return ssl_protocol_to_string(s->version);
3433 SSL *SSL_dup(SSL *s)
3435 STACK_OF(X509_NAME) *sk;
3440 /* If we're not quiescent, just up_ref! */
3441 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3442 CRYPTO_UP_REF(&s->references, &i, s->lock);
3447 * Otherwise, copy configuration state, and session if set.
3449 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3452 if (s->session != NULL) {
3454 * Arranges to share the same session via up_ref. This "copies"
3455 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3457 if (!SSL_copy_session_id(ret, s))
3461 * No session has been established yet, so we have to expect that
3462 * s->cert or ret->cert will be changed later -- they should not both
3463 * point to the same object, and thus we can't use
3464 * SSL_copy_session_id.
3466 if (!SSL_set_ssl_method(ret, s->method))
3469 if (s->cert != NULL) {
3470 ssl_cert_free(ret->cert);
3471 ret->cert = ssl_cert_dup(s->cert);
3472 if (ret->cert == NULL)
3476 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3477 (int)s->sid_ctx_length))
3481 if (!ssl_dane_dup(ret, s))
3483 ret->version = s->version;
3484 ret->options = s->options;
3485 ret->mode = s->mode;
3486 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3487 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3488 ret->msg_callback = s->msg_callback;
3489 ret->msg_callback_arg = s->msg_callback_arg;
3490 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3491 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3492 ret->generate_session_id = s->generate_session_id;
3494 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3496 /* copy app data, a little dangerous perhaps */
3497 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3500 /* setup rbio, and wbio */
3501 if (s->rbio != NULL) {
3502 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3505 if (s->wbio != NULL) {
3506 if (s->wbio != s->rbio) {
3507 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3510 BIO_up_ref(ret->rbio);
3511 ret->wbio = ret->rbio;
3515 ret->server = s->server;
3516 if (s->handshake_func) {
3518 SSL_set_accept_state(ret);
3520 SSL_set_connect_state(ret);
3522 ret->shutdown = s->shutdown;
3525 ret->default_passwd_callback = s->default_passwd_callback;
3526 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3528 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3530 /* dup the cipher_list and cipher_list_by_id stacks */
3531 if (s->cipher_list != NULL) {
3532 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3535 if (s->cipher_list_by_id != NULL)
3536 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3540 /* Dup the client_CA list */
3541 if (s->ca_names != NULL) {
3542 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3545 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3546 xn = sk_X509_NAME_value(sk, i);
3547 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3560 void ssl_clear_cipher_ctx(SSL *s)
3562 if (s->enc_read_ctx != NULL) {
3563 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3564 s->enc_read_ctx = NULL;
3566 if (s->enc_write_ctx != NULL) {
3567 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3568 s->enc_write_ctx = NULL;
3570 #ifndef OPENSSL_NO_COMP
3571 COMP_CTX_free(s->expand);
3573 COMP_CTX_free(s->compress);
3578 X509 *SSL_get_certificate(const SSL *s)
3580 if (s->cert != NULL)
3581 return (s->cert->key->x509);
3586 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3588 if (s->cert != NULL)
3589 return (s->cert->key->privatekey);
3594 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3596 if (ctx->cert != NULL)
3597 return ctx->cert->key->x509;
3602 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3604 if (ctx->cert != NULL)
3605 return ctx->cert->key->privatekey;
3610 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3612 if ((s->session != NULL) && (s->session->cipher != NULL))
3613 return (s->session->cipher);
3617 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3619 return s->s3->tmp.new_cipher;
3622 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3624 #ifndef OPENSSL_NO_COMP
3625 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3631 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3633 #ifndef OPENSSL_NO_COMP
3634 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3640 int ssl_init_wbio_buffer(SSL *s)
3644 if (s->bbio != NULL) {
3645 /* Already buffered. */
3649 bbio = BIO_new(BIO_f_buffer());
3650 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3652 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3656 s->wbio = BIO_push(bbio, s->wbio);
3661 int ssl_free_wbio_buffer(SSL *s)
3663 /* callers ensure s is never null */
3664 if (s->bbio == NULL)
3667 s->wbio = BIO_pop(s->wbio);
3668 if (!ossl_assert(s->wbio != NULL))
3676 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3678 ctx->quiet_shutdown = mode;
3681 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3683 return (ctx->quiet_shutdown);
3686 void SSL_set_quiet_shutdown(SSL *s, int mode)
3688 s->quiet_shutdown = mode;
3691 int SSL_get_quiet_shutdown(const SSL *s)
3693 return (s->quiet_shutdown);
3696 void SSL_set_shutdown(SSL *s, int mode)
3701 int SSL_get_shutdown(const SSL *s)
3706 int SSL_version(const SSL *s)
3711 int SSL_client_version(const SSL *s)
3713 return s->client_version;
3716 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3721 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3724 if (ssl->ctx == ctx)
3727 ctx = ssl->session_ctx;
3728 new_cert = ssl_cert_dup(ctx->cert);
3729 if (new_cert == NULL) {
3733 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3734 ssl_cert_free(new_cert);
3738 ssl_cert_free(ssl->cert);
3739 ssl->cert = new_cert;
3742 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3743 * so setter APIs must prevent invalid lengths from entering the system.
3745 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3749 * If the session ID context matches that of the parent SSL_CTX,
3750 * inherit it from the new SSL_CTX as well. If however the context does
3751 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3752 * leave it unchanged.
3754 if ((ssl->ctx != NULL) &&
3755 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3756 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3757 ssl->sid_ctx_length = ctx->sid_ctx_length;
3758 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3761 SSL_CTX_up_ref(ctx);
3762 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3768 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3770 return (X509_STORE_set_default_paths(ctx->cert_store));
3773 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3775 X509_LOOKUP *lookup;
3777 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3780 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3782 /* Clear any errors if the default directory does not exist */
3788 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3790 X509_LOOKUP *lookup;
3792 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3796 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3798 /* Clear any errors if the default file does not exist */
3804 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3807 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3810 void SSL_set_info_callback(SSL *ssl,
3811 void (*cb) (const SSL *ssl, int type, int val))
3813 ssl->info_callback = cb;
3817 * One compiler (Diab DCC) doesn't like argument names in returned function
3820 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3823 return ssl->info_callback;
3826 void SSL_set_verify_result(SSL *ssl, long arg)
3828 ssl->verify_result = arg;
3831 long SSL_get_verify_result(const SSL *ssl)
3833 return (ssl->verify_result);
3836 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3839 return sizeof(ssl->s3->client_random);
3840 if (outlen > sizeof(ssl->s3->client_random))
3841 outlen = sizeof(ssl->s3->client_random);
3842 memcpy(out, ssl->s3->client_random, outlen);
3846 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3849 return sizeof(ssl->s3->server_random);
3850 if (outlen > sizeof(ssl->s3->server_random))
3851 outlen = sizeof(ssl->s3->server_random);
3852 memcpy(out, ssl->s3->server_random, outlen);
3856 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3857 unsigned char *out, size_t outlen)
3860 return session->master_key_length;
3861 if (outlen > session->master_key_length)
3862 outlen = session->master_key_length;
3863 memcpy(out, session->master_key, outlen);
3867 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3870 if (len > sizeof(sess->master_key))
3873 memcpy(sess->master_key, in, len);
3874 sess->master_key_length = len;
3879 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3881 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3884 void *SSL_get_ex_data(const SSL *s, int idx)
3886 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3889 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3891 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3894 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3896 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3899 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3901 return (ctx->cert_store);
3904 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3906 X509_STORE_free(ctx->cert_store);
3907 ctx->cert_store = store;
3910 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3913 X509_STORE_up_ref(store);
3914 SSL_CTX_set_cert_store(ctx, store);
3917 int SSL_want(const SSL *s)
3919 return (s->rwstate);
3923 * \brief Set the callback for generating temporary DH keys.
3924 * \param ctx the SSL context.
3925 * \param dh the callback
3928 #ifndef OPENSSL_NO_DH
3929 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3930 DH *(*dh) (SSL *ssl, int is_export,
3933 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3936 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3939 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3943 #ifndef OPENSSL_NO_PSK
3944 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3946 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3947 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3950 OPENSSL_free(ctx->cert->psk_identity_hint);
3951 if (identity_hint != NULL) {
3952 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3953 if (ctx->cert->psk_identity_hint == NULL)
3956 ctx->cert->psk_identity_hint = NULL;
3960 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3965 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3966 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3969 OPENSSL_free(s->cert->psk_identity_hint);
3970 if (identity_hint != NULL) {
3971 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3972 if (s->cert->psk_identity_hint == NULL)
3975 s->cert->psk_identity_hint = NULL;
3979 const char *SSL_get_psk_identity_hint(const SSL *s)
3981 if (s == NULL || s->session == NULL)
3983 return (s->session->psk_identity_hint);
3986 const char *SSL_get_psk_identity(const SSL *s)
3988 if (s == NULL || s->session == NULL)
3990 return (s->session->psk_identity);
3993 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
3995 s->psk_client_callback = cb;
3998 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4000 ctx->psk_client_callback = cb;
4003 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4005 s->psk_server_callback = cb;
4008 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4010 ctx->psk_server_callback = cb;
4014 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4016 s->psk_find_session_cb = cb;
4019 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4020 SSL_psk_find_session_cb_func cb)
4022 ctx->psk_find_session_cb = cb;
4025 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4027 s->psk_use_session_cb = cb;
4030 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4031 SSL_psk_use_session_cb_func cb)
4033 ctx->psk_use_session_cb = cb;
4036 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4037 void (*cb) (int write_p, int version,
4038 int content_type, const void *buf,
4039 size_t len, SSL *ssl, void *arg))
4041 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4044 void SSL_set_msg_callback(SSL *ssl,
4045 void (*cb) (int write_p, int version,
4046 int content_type, const void *buf,
4047 size_t len, SSL *ssl, void *arg))
4049 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4052 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4053 int (*cb) (SSL *ssl,
4057 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4058 (void (*)(void))cb);
4061 void SSL_set_not_resumable_session_callback(SSL *ssl,
4062 int (*cb) (SSL *ssl,
4063 int is_forward_secure))
4065 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4066 (void (*)(void))cb);
4069 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4070 size_t (*cb) (SSL *ssl, int type,
4071 size_t len, void *arg))
4073 ctx->record_padding_cb = cb;
4076 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4078 ctx->record_padding_arg = arg;
4081 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4083 return ctx->record_padding_arg;
4086 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4088 /* block size of 0 or 1 is basically no padding */
4089 if (block_size == 1)
4090 ctx->block_padding = 0;
4091 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4092 ctx->block_padding = block_size;
4098 void SSL_set_record_padding_callback(SSL *ssl,
4099 size_t (*cb) (SSL *ssl, int type,
4100 size_t len, void *arg))
4102 ssl->record_padding_cb = cb;
4105 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4107 ssl->record_padding_arg = arg;
4110 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4112 return ssl->record_padding_arg;
4115 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4117 /* block size of 0 or 1 is basically no padding */
4118 if (block_size == 1)
4119 ssl->block_padding = 0;
4120 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4121 ssl->block_padding = block_size;
4128 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4129 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4130 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4131 * Returns the newly allocated ctx;
4134 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4136 ssl_clear_hash_ctx(hash);
4137 *hash = EVP_MD_CTX_new();
4138 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4139 EVP_MD_CTX_free(*hash);
4146 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4149 EVP_MD_CTX_free(*hash);
4153 /* Retrieve handshake hashes */
4154 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4157 EVP_MD_CTX *ctx = NULL;
4158 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4159 int hashleni = EVP_MD_CTX_size(hdgst);
4162 if (hashleni < 0 || (size_t)hashleni > outlen)
4165 ctx = EVP_MD_CTX_new();
4169 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4170 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4173 *hashlen = hashleni;
4177 EVP_MD_CTX_free(ctx);
4181 int SSL_session_reused(SSL *s)
4186 int SSL_is_server(const SSL *s)
4191 #if OPENSSL_API_COMPAT < 0x10100000L
4192 void SSL_set_debug(SSL *s, int debug)
4194 /* Old function was do-nothing anyway... */
4200 void SSL_set_security_level(SSL *s, int level)
4202 s->cert->sec_level = level;
4205 int SSL_get_security_level(const SSL *s)
4207 return s->cert->sec_level;
4210 void SSL_set_security_callback(SSL *s,
4211 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4212 int op, int bits, int nid,
4213 void *other, void *ex))
4215 s->cert->sec_cb = cb;
4218 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4219 const SSL_CTX *ctx, int op,
4220 int bits, int nid, void *other,
4222 return s->cert->sec_cb;
4225 void SSL_set0_security_ex_data(SSL *s, void *ex)
4227 s->cert->sec_ex = ex;
4230 void *SSL_get0_security_ex_data(const SSL *s)
4232 return s->cert->sec_ex;
4235 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4237 ctx->cert->sec_level = level;
4240 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4242 return ctx->cert->sec_level;
4245 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4246 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4247 int op, int bits, int nid,
4248 void *other, void *ex))
4250 ctx->cert->sec_cb = cb;
4253 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4259 return ctx->cert->sec_cb;
4262 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4264 ctx->cert->sec_ex = ex;
4267 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4269 return ctx->cert->sec_ex;
4273 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4274 * can return unsigned long, instead of the generic long return value from the
4275 * control interface.
4277 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4279 return ctx->options;
4282 unsigned long SSL_get_options(const SSL *s)
4287 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4289 return ctx->options |= op;
4292 unsigned long SSL_set_options(SSL *s, unsigned long op)
4294 return s->options |= op;
4297 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4299 return ctx->options &= ~op;
4302 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4304 return s->options &= ~op;
4307 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4309 return s->verified_chain;
4312 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4314 #ifndef OPENSSL_NO_CT
4317 * Moves SCTs from the |src| stack to the |dst| stack.
4318 * The source of each SCT will be set to |origin|.
4319 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4321 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4323 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4324 sct_source_t origin)
4330 *dst = sk_SCT_new_null();
4332 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4337 while ((sct = sk_SCT_pop(src)) != NULL) {
4338 if (SCT_set_source(sct, origin) != 1)
4341 if (sk_SCT_push(*dst, sct) <= 0)
4349 sk_SCT_push(src, sct); /* Put the SCT back */
4354 * Look for data collected during ServerHello and parse if found.
4355 * Returns the number of SCTs extracted.
4357 static int ct_extract_tls_extension_scts(SSL *s)
4359 int scts_extracted = 0;
4361 if (s->ext.scts != NULL) {
4362 const unsigned char *p = s->ext.scts;
4363 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4365 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4367 SCT_LIST_free(scts);
4370 return scts_extracted;
4374 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4375 * contains an SCT X509 extension. They will be stored in |s->scts|.
4377 * - The number of SCTs extracted, assuming an OCSP response exists.
4378 * - 0 if no OCSP response exists or it contains no SCTs.
4379 * - A negative integer if an error occurs.
4381 static int ct_extract_ocsp_response_scts(SSL *s)
4383 # ifndef OPENSSL_NO_OCSP
4384 int scts_extracted = 0;
4385 const unsigned char *p;
4386 OCSP_BASICRESP *br = NULL;
4387 OCSP_RESPONSE *rsp = NULL;
4388 STACK_OF(SCT) *scts = NULL;
4391 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4394 p = s->ext.ocsp.resp;
4395 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4399 br = OCSP_response_get1_basic(rsp);
4403 for (i = 0; i < OCSP_resp_count(br); ++i) {
4404 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4410 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4412 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4413 if (scts_extracted < 0)
4417 SCT_LIST_free(scts);
4418 OCSP_BASICRESP_free(br);
4419 OCSP_RESPONSE_free(rsp);
4420 return scts_extracted;
4422 /* Behave as if no OCSP response exists */
4428 * Attempts to extract SCTs from the peer certificate.
4429 * Return the number of SCTs extracted, or a negative integer if an error
4432 static int ct_extract_x509v3_extension_scts(SSL *s)
4434 int scts_extracted = 0;
4435 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4438 STACK_OF(SCT) *scts =
4439 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4442 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4444 SCT_LIST_free(scts);
4447 return scts_extracted;
4451 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4452 * response (if it exists) and X509v3 extensions in the certificate.
4453 * Returns NULL if an error occurs.
4455 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4457 if (!s->scts_parsed) {
4458 if (ct_extract_tls_extension_scts(s) < 0 ||
4459 ct_extract_ocsp_response_scts(s) < 0 ||
4460 ct_extract_x509v3_extension_scts(s) < 0)
4470 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4471 const STACK_OF(SCT) *scts, void *unused_arg)
4476 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4477 const STACK_OF(SCT) *scts, void *unused_arg)
4479 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4482 for (i = 0; i < count; ++i) {
4483 SCT *sct = sk_SCT_value(scts, i);
4484 int status = SCT_get_validation_status(sct);
4486 if (status == SCT_VALIDATION_STATUS_VALID)
4489 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4493 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4497 * Since code exists that uses the custom extension handler for CT, look
4498 * for this and throw an error if they have already registered to use CT.
4500 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4501 TLSEXT_TYPE_signed_certificate_timestamp))
4503 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4504 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4508 if (callback != NULL) {
4510 * If we are validating CT, then we MUST accept SCTs served via OCSP
4512 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4516 s->ct_validation_callback = callback;
4517 s->ct_validation_callback_arg = arg;
4522 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4523 ssl_ct_validation_cb callback, void *arg)
4526 * Since code exists that uses the custom extension handler for CT, look for
4527 * this and throw an error if they have already registered to use CT.
4529 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4530 TLSEXT_TYPE_signed_certificate_timestamp))
4532 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4533 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4537 ctx->ct_validation_callback = callback;
4538 ctx->ct_validation_callback_arg = arg;
4542 int SSL_ct_is_enabled(const SSL *s)
4544 return s->ct_validation_callback != NULL;
4547 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4549 return ctx->ct_validation_callback != NULL;
4552 int ssl_validate_ct(SSL *s)
4555 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4557 SSL_DANE *dane = &s->dane;
4558 CT_POLICY_EVAL_CTX *ctx = NULL;
4559 const STACK_OF(SCT) *scts;
4562 * If no callback is set, the peer is anonymous, or its chain is invalid,
4563 * skip SCT validation - just return success. Applications that continue
4564 * handshakes without certificates, with unverified chains, or pinned leaf
4565 * certificates are outside the scope of the WebPKI and CT.
4567 * The above exclusions notwithstanding the vast majority of peers will
4568 * have rather ordinary certificate chains validated by typical
4569 * applications that perform certificate verification and therefore will
4570 * process SCTs when enabled.
4572 if (s->ct_validation_callback == NULL || cert == NULL ||
4573 s->verify_result != X509_V_OK ||
4574 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4578 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4579 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4581 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4582 switch (dane->mtlsa->usage) {
4583 case DANETLS_USAGE_DANE_TA:
4584 case DANETLS_USAGE_DANE_EE:
4589 ctx = CT_POLICY_EVAL_CTX_new();
4591 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4595 issuer = sk_X509_value(s->verified_chain, 1);
4596 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4597 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4598 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4599 CT_POLICY_EVAL_CTX_set_time(
4600 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4602 scts = SSL_get0_peer_scts(s);
4605 * This function returns success (> 0) only when all the SCTs are valid, 0
4606 * when some are invalid, and < 0 on various internal errors (out of
4607 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4608 * reason to abort the handshake, that decision is up to the callback.
4609 * Therefore, we error out only in the unexpected case that the return
4610 * value is negative.
4612 * XXX: One might well argue that the return value of this function is an
4613 * unfortunate design choice. Its job is only to determine the validation
4614 * status of each of the provided SCTs. So long as it correctly separates
4615 * the wheat from the chaff it should return success. Failure in this case
4616 * ought to correspond to an inability to carry out its duties.
4618 if (SCT_LIST_validate(scts, ctx) < 0) {
4619 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4623 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4625 ret = 0; /* This function returns 0 on failure */
4628 CT_POLICY_EVAL_CTX_free(ctx);
4630 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4631 * failure return code here. Also the application may wish the complete
4632 * the handshake, and then disconnect cleanly at a higher layer, after
4633 * checking the verification status of the completed connection.
4635 * We therefore force a certificate verification failure which will be
4636 * visible via SSL_get_verify_result() and cached as part of any resumed
4639 * Note: the permissive callback is for information gathering only, always
4640 * returns success, and does not affect verification status. Only the
4641 * strict callback or a custom application-specified callback can trigger
4642 * connection failure or record a verification error.
4645 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4649 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4651 switch (validation_mode) {
4653 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4655 case SSL_CT_VALIDATION_PERMISSIVE:
4656 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4657 case SSL_CT_VALIDATION_STRICT:
4658 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4662 int SSL_enable_ct(SSL *s, int validation_mode)
4664 switch (validation_mode) {
4666 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4668 case SSL_CT_VALIDATION_PERMISSIVE:
4669 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4670 case SSL_CT_VALIDATION_STRICT:
4671 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4675 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4677 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4680 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4682 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4685 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4687 CTLOG_STORE_free(ctx->ctlog_store);
4688 ctx->ctlog_store = logs;
4691 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4693 return ctx->ctlog_store;
4696 #endif /* OPENSSL_NO_CT */
4698 void SSL_CTX_set_early_cb(SSL_CTX *c, SSL_early_cb_fn cb, void *arg)
4701 c->early_cb_arg = arg;
4704 int SSL_early_isv2(SSL *s)
4706 if (s->clienthello == NULL)
4708 return s->clienthello->isv2;
4711 unsigned int SSL_early_get0_legacy_version(SSL *s)
4713 if (s->clienthello == NULL)
4715 return s->clienthello->legacy_version;
4718 size_t SSL_early_get0_random(SSL *s, const unsigned char **out)
4720 if (s->clienthello == NULL)
4723 *out = s->clienthello->random;
4724 return SSL3_RANDOM_SIZE;
4727 size_t SSL_early_get0_session_id(SSL *s, const unsigned char **out)
4729 if (s->clienthello == NULL)
4732 *out = s->clienthello->session_id;
4733 return s->clienthello->session_id_len;
4736 size_t SSL_early_get0_ciphers(SSL *s, const unsigned char **out)
4738 if (s->clienthello == NULL)
4741 *out = PACKET_data(&s->clienthello->ciphersuites);
4742 return PACKET_remaining(&s->clienthello->ciphersuites);
4745 size_t SSL_early_get0_compression_methods(SSL *s, const unsigned char **out)
4747 if (s->clienthello == NULL)
4750 *out = s->clienthello->compressions;
4751 return s->clienthello->compressions_len;
4754 int SSL_early_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4760 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4762 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4763 ext = s->clienthello->pre_proc_exts + i;
4767 present = OPENSSL_malloc(sizeof(*present) * num);
4768 if (present == NULL)
4770 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4771 ext = s->clienthello->pre_proc_exts + i;
4773 if (ext->received_order >= num)
4775 present[ext->received_order] = ext->type;
4782 OPENSSL_free(present);
4786 int SSL_early_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4792 if (s->clienthello == NULL)
4794 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4795 r = s->clienthello->pre_proc_exts + i;
4796 if (r->present && r->type == type) {
4798 *out = PACKET_data(&r->data);
4800 *outlen = PACKET_remaining(&r->data);
4807 int SSL_free_buffers(SSL *ssl)
4809 RECORD_LAYER *rl = &ssl->rlayer;
4811 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4814 RECORD_LAYER_release(rl);
4818 int SSL_alloc_buffers(SSL *ssl)
4820 return ssl3_setup_buffers(ssl);
4823 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4825 ctx->keylog_callback = cb;
4828 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4830 return ctx->keylog_callback;
4833 static int nss_keylog_int(const char *prefix,
4835 const uint8_t *parameter_1,
4836 size_t parameter_1_len,
4837 const uint8_t *parameter_2,
4838 size_t parameter_2_len)
4841 char *cursor = NULL;
4846 if (ssl->ctx->keylog_callback == NULL) return 1;
4849 * Our output buffer will contain the following strings, rendered with
4850 * space characters in between, terminated by a NULL character: first the
4851 * prefix, then the first parameter, then the second parameter. The
4852 * meaning of each parameter depends on the specific key material being
4853 * logged. Note that the first and second parameters are encoded in
4854 * hexadecimal, so we need a buffer that is twice their lengths.
4856 prefix_len = strlen(prefix);
4857 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4858 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4859 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4863 strcpy(cursor, prefix);
4864 cursor += prefix_len;
4867 for (i = 0; i < parameter_1_len; i++) {
4868 sprintf(cursor, "%02x", parameter_1[i]);
4873 for (i = 0; i < parameter_2_len; i++) {
4874 sprintf(cursor, "%02x", parameter_2[i]);
4879 ssl->ctx->keylog_callback(ssl, (const char *)out);
4885 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4886 const uint8_t *encrypted_premaster,
4887 size_t encrypted_premaster_len,
4888 const uint8_t *premaster,
4889 size_t premaster_len)
4891 if (encrypted_premaster_len < 8) {
4892 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4896 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4897 return nss_keylog_int("RSA",
4899 encrypted_premaster,
4905 int ssl_log_secret(SSL *ssl,
4907 const uint8_t *secret,
4910 return nss_keylog_int(label,
4912 ssl->s3->client_random,
4918 #define SSLV2_CIPHER_LEN 3
4920 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4925 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4927 if (PACKET_remaining(cipher_suites) == 0) {
4928 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4929 *al = SSL_AD_ILLEGAL_PARAMETER;
4933 if (PACKET_remaining(cipher_suites) % n != 0) {
4934 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4935 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4936 *al = SSL_AD_DECODE_ERROR;
4940 OPENSSL_free(s->s3->tmp.ciphers_raw);
4941 s->s3->tmp.ciphers_raw = NULL;
4942 s->s3->tmp.ciphers_rawlen = 0;
4945 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4946 PACKET sslv2ciphers = *cipher_suites;
4947 unsigned int leadbyte;
4951 * We store the raw ciphers list in SSLv3+ format so we need to do some
4952 * preprocessing to convert the list first. If there are any SSLv2 only
4953 * ciphersuites with a non-zero leading byte then we are going to
4954 * slightly over allocate because we won't store those. But that isn't a
4957 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4958 s->s3->tmp.ciphers_raw = raw;
4960 *al = SSL_AD_INTERNAL_ERROR;
4963 for (s->s3->tmp.ciphers_rawlen = 0;
4964 PACKET_remaining(&sslv2ciphers) > 0;
4965 raw += TLS_CIPHER_LEN) {
4966 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4968 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4971 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4972 *al = SSL_AD_DECODE_ERROR;
4973 OPENSSL_free(s->s3->tmp.ciphers_raw);
4974 s->s3->tmp.ciphers_raw = NULL;
4975 s->s3->tmp.ciphers_rawlen = 0;
4979 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
4981 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
4982 &s->s3->tmp.ciphers_rawlen)) {
4983 *al = SSL_AD_INTERNAL_ERROR;
4991 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
4992 int isv2format, STACK_OF(SSL_CIPHER) **sk,
4993 STACK_OF(SSL_CIPHER) **scsvs)
4998 if (!PACKET_buf_init(&pkt, bytes, len))
5000 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5003 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5004 STACK_OF(SSL_CIPHER) **skp,
5005 STACK_OF(SSL_CIPHER) **scsvs_out,
5006 int sslv2format, int *al)
5008 const SSL_CIPHER *c;
5009 STACK_OF(SSL_CIPHER) *sk = NULL;
5010 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5012 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5013 unsigned char cipher[SSLV2_CIPHER_LEN];
5015 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5017 if (PACKET_remaining(cipher_suites) == 0) {
5018 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5019 *al = SSL_AD_ILLEGAL_PARAMETER;
5023 if (PACKET_remaining(cipher_suites) % n != 0) {
5024 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5025 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5026 *al = SSL_AD_DECODE_ERROR;
5030 sk = sk_SSL_CIPHER_new_null();
5031 scsvs = sk_SSL_CIPHER_new_null();
5032 if (sk == NULL || scsvs == NULL) {
5033 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5034 *al = SSL_AD_INTERNAL_ERROR;
5038 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5040 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5041 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5042 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5044 if (sslv2format && cipher[0] != '\0')
5047 /* For SSLv2-compat, ignore leading 0-byte. */
5048 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5050 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5051 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5052 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5053 *al = SSL_AD_INTERNAL_ERROR;
5058 if (PACKET_remaining(cipher_suites) > 0) {
5059 *al = SSL_AD_DECODE_ERROR;
5060 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5067 sk_SSL_CIPHER_free(sk);
5068 if (scsvs_out != NULL)
5071 sk_SSL_CIPHER_free(scsvs);
5074 sk_SSL_CIPHER_free(sk);
5075 sk_SSL_CIPHER_free(scsvs);
5079 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5081 ctx->max_early_data = max_early_data;
5086 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5088 return ctx->max_early_data;
5091 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5093 s->max_early_data = max_early_data;
5098 uint32_t SSL_get_max_early_data(const SSL *s)
5100 return s->max_early_data;
5103 int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5105 if (s->drbg != NULL)
5106 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5107 return RAND_bytes(rnd, (int)size);