2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/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"
25 #include "internal/refcount.h"
27 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
29 SSL3_ENC_METHOD ssl3_undef_enc_method = {
31 * evil casts, but these functions are only called if there's a library
34 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
35 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
36 ssl_undefined_function,
37 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
38 ssl_undefined_function,
39 (int (*)(SSL *, int))ssl_undefined_function,
40 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
41 ssl_undefined_function,
42 NULL, /* client_finished_label */
43 0, /* client_finished_label_len */
44 NULL, /* server_finished_label */
45 0, /* server_finished_label_len */
46 (int (*)(int))ssl_undefined_function,
47 (int (*)(SSL *, unsigned char *, size_t, const char *,
48 size_t, const unsigned char *, size_t,
49 int use_context))ssl_undefined_function,
52 struct ssl_async_args {
56 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
58 int (*func_read) (SSL *, void *, size_t, size_t *);
59 int (*func_write) (SSL *, const void *, size_t, size_t *);
60 int (*func_other) (SSL *);
70 DANETLS_MATCHING_FULL, 0, NID_undef
73 DANETLS_MATCHING_2256, 1, NID_sha256
76 DANETLS_MATCHING_2512, 2, NID_sha512
80 static int dane_ctx_enable(struct dane_ctx_st *dctx)
84 uint8_t mdmax = DANETLS_MATCHING_LAST;
85 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
88 if (dctx->mdevp != NULL)
91 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
92 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
94 if (mdord == NULL || mdevp == NULL) {
97 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
101 /* Install default entries */
102 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
105 if (dane_mds[i].nid == NID_undef ||
106 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
108 mdevp[dane_mds[i].mtype] = md;
109 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
119 static void dane_ctx_final(struct dane_ctx_st *dctx)
121 OPENSSL_free(dctx->mdevp);
124 OPENSSL_free(dctx->mdord);
129 static void tlsa_free(danetls_record *t)
133 OPENSSL_free(t->data);
134 EVP_PKEY_free(t->spki);
138 static void dane_final(SSL_DANE *dane)
140 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
143 sk_X509_pop_free(dane->certs, X509_free);
146 X509_free(dane->mcert);
154 * dane_copy - Copy dane configuration, sans verification state.
156 static int ssl_dane_dup(SSL *to, SSL *from)
161 if (!DANETLS_ENABLED(&from->dane))
164 dane_final(&to->dane);
165 to->dane.flags = from->dane.flags;
166 to->dane.dctx = &to->ctx->dane;
167 to->dane.trecs = sk_danetls_record_new_null();
169 if (to->dane.trecs == NULL) {
170 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
174 num = sk_danetls_record_num(from->dane.trecs);
175 for (i = 0; i < num; ++i) {
176 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
178 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
179 t->data, t->dlen) <= 0)
185 static int dane_mtype_set(struct dane_ctx_st *dctx,
186 const EVP_MD *md, uint8_t mtype, uint8_t ord)
190 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
191 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
195 if (mtype > dctx->mdmax) {
196 const EVP_MD **mdevp;
198 int n = ((int)mtype) + 1;
200 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
202 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
207 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
209 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
214 /* Zero-fill any gaps */
215 for (i = dctx->mdmax + 1; i < mtype; ++i) {
223 dctx->mdevp[mtype] = md;
224 /* Coerce ordinal of disabled matching types to 0 */
225 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
230 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
232 if (mtype > dane->dctx->mdmax)
234 return dane->dctx->mdevp[mtype];
237 static int dane_tlsa_add(SSL_DANE *dane,
240 uint8_t mtype, unsigned char *data, size_t dlen)
243 const EVP_MD *md = NULL;
244 int ilen = (int)dlen;
248 if (dane->trecs == NULL) {
249 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
253 if (ilen < 0 || dlen != (size_t)ilen) {
254 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
258 if (usage > DANETLS_USAGE_LAST) {
259 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
263 if (selector > DANETLS_SELECTOR_LAST) {
264 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
268 if (mtype != DANETLS_MATCHING_FULL) {
269 md = tlsa_md_get(dane, mtype);
271 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
276 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
277 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
281 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
285 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
286 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
291 t->selector = selector;
293 t->data = OPENSSL_malloc(dlen);
294 if (t->data == NULL) {
296 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
299 memcpy(t->data, data, dlen);
302 /* Validate and cache full certificate or public key */
303 if (mtype == DANETLS_MATCHING_FULL) {
304 const unsigned char *p = data;
306 EVP_PKEY *pkey = NULL;
309 case DANETLS_SELECTOR_CERT:
310 if (!d2i_X509(&cert, &p, ilen) || p < data ||
311 dlen != (size_t)(p - data)) {
313 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
316 if (X509_get0_pubkey(cert) == NULL) {
318 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
322 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
328 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
329 * records that contain full certificates of trust-anchors that are
330 * not present in the wire chain. For usage PKIX-TA(0), we augment
331 * the chain with untrusted Full(0) certificates from DNS, in case
332 * they are missing from the chain.
334 if ((dane->certs == NULL &&
335 (dane->certs = sk_X509_new_null()) == NULL) ||
336 !sk_X509_push(dane->certs, cert)) {
337 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
344 case DANETLS_SELECTOR_SPKI:
345 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
346 dlen != (size_t)(p - data)) {
348 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
353 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
354 * records that contain full bare keys of trust-anchors that are
355 * not present in the wire chain.
357 if (usage == DANETLS_USAGE_DANE_TA)
366 * Find the right insertion point for the new record.
368 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
369 * they can be processed first, as they require no chain building, and no
370 * expiration or hostname checks. Because DANE-EE(3) is numerically
371 * largest, this is accomplished via descending sort by "usage".
373 * We also sort in descending order by matching ordinal to simplify
374 * the implementation of digest agility in the verification code.
376 * The choice of order for the selector is not significant, so we
377 * use the same descending order for consistency.
379 num = sk_danetls_record_num(dane->trecs);
380 for (i = 0; i < num; ++i) {
381 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
383 if (rec->usage > usage)
385 if (rec->usage < usage)
387 if (rec->selector > selector)
389 if (rec->selector < selector)
391 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
396 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
398 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
401 dane->umask |= DANETLS_USAGE_BIT(usage);
407 * Return 0 if there is only one version configured and it was disabled
408 * at configure time. Return 1 otherwise.
410 static int ssl_check_allowed_versions(int min_version, int max_version)
412 int minisdtls = 0, maxisdtls = 0;
414 /* Figure out if we're doing DTLS versions or TLS versions */
415 if (min_version == DTLS1_BAD_VER
416 || min_version >> 8 == DTLS1_VERSION_MAJOR)
418 if (max_version == DTLS1_BAD_VER
419 || max_version >> 8 == DTLS1_VERSION_MAJOR)
421 /* A wildcard version of 0 could be DTLS or TLS. */
422 if ((minisdtls && !maxisdtls && max_version != 0)
423 || (maxisdtls && !minisdtls && min_version != 0)) {
424 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
428 if (minisdtls || maxisdtls) {
429 /* Do DTLS version checks. */
430 if (min_version == 0)
431 /* Ignore DTLS1_BAD_VER */
432 min_version = DTLS1_VERSION;
433 if (max_version == 0)
434 max_version = DTLS1_2_VERSION;
435 #ifdef OPENSSL_NO_DTLS1_2
436 if (max_version == DTLS1_2_VERSION)
437 max_version = DTLS1_VERSION;
439 #ifdef OPENSSL_NO_DTLS1
440 if (min_version == DTLS1_VERSION)
441 min_version = DTLS1_2_VERSION;
443 /* Done massaging versions; do the check. */
445 #ifdef OPENSSL_NO_DTLS1
446 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
447 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
449 #ifdef OPENSSL_NO_DTLS1_2
450 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
451 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
456 /* Regular TLS version checks. */
457 if (min_version == 0)
458 min_version = SSL3_VERSION;
459 if (max_version == 0)
460 max_version = TLS1_3_VERSION;
461 #ifdef OPENSSL_NO_TLS1_3
462 if (max_version == TLS1_3_VERSION)
463 max_version = TLS1_2_VERSION;
465 #ifdef OPENSSL_NO_TLS1_2
466 if (max_version == TLS1_2_VERSION)
467 max_version = TLS1_1_VERSION;
469 #ifdef OPENSSL_NO_TLS1_1
470 if (max_version == TLS1_1_VERSION)
471 max_version = TLS1_VERSION;
473 #ifdef OPENSSL_NO_TLS1
474 if (max_version == TLS1_VERSION)
475 max_version = SSL3_VERSION;
477 #ifdef OPENSSL_NO_SSL3
478 if (min_version == SSL3_VERSION)
479 min_version = TLS1_VERSION;
481 #ifdef OPENSSL_NO_TLS1
482 if (min_version == TLS1_VERSION)
483 min_version = TLS1_1_VERSION;
485 #ifdef OPENSSL_NO_TLS1_1
486 if (min_version == TLS1_1_VERSION)
487 min_version = TLS1_2_VERSION;
489 #ifdef OPENSSL_NO_TLS1_2
490 if (min_version == TLS1_2_VERSION)
491 min_version = TLS1_3_VERSION;
493 /* Done massaging versions; do the check. */
495 #ifdef OPENSSL_NO_SSL3
496 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
498 #ifdef OPENSSL_NO_TLS1
499 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
501 #ifdef OPENSSL_NO_TLS1_1
502 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
504 #ifdef OPENSSL_NO_TLS1_2
505 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
507 #ifdef OPENSSL_NO_TLS1_3
508 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
516 static void clear_ciphers(SSL *s)
518 /* clear the current cipher */
519 ssl_clear_cipher_ctx(s);
520 ssl_clear_hash_ctx(&s->read_hash);
521 ssl_clear_hash_ctx(&s->write_hash);
524 int SSL_clear(SSL *s)
526 if (s->method == NULL) {
527 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
531 if (ssl_clear_bad_session(s)) {
532 SSL_SESSION_free(s->session);
535 SSL_SESSION_free(s->psksession);
536 s->psksession = NULL;
537 OPENSSL_free(s->psksession_id);
538 s->psksession_id = NULL;
539 s->psksession_id_len = 0;
545 if (s->renegotiate) {
546 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
550 ossl_statem_clear(s);
552 s->version = s->method->version;
553 s->client_version = s->version;
554 s->rwstate = SSL_NOTHING;
556 BUF_MEM_free(s->init_buf);
561 s->key_update = SSL_KEY_UPDATE_NONE;
563 /* Reset DANE verification result state */
566 X509_free(s->dane.mcert);
567 s->dane.mcert = NULL;
568 s->dane.mtlsa = NULL;
570 /* Clear the verification result peername */
571 X509_VERIFY_PARAM_move_peername(s->param, NULL);
574 * Check to see if we were changed into a different method, if so, revert
577 if (s->method != s->ctx->method) {
578 s->method->ssl_free(s);
579 s->method = s->ctx->method;
580 if (!s->method->ssl_new(s))
583 if (!s->method->ssl_clear(s))
587 RECORD_LAYER_clear(&s->rlayer);
592 /** Used to change an SSL_CTXs default SSL method type */
593 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
595 STACK_OF(SSL_CIPHER) *sk;
599 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
600 &(ctx->cipher_list_by_id),
601 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
602 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
603 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
609 SSL *SSL_new(SSL_CTX *ctx)
614 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
617 if (ctx->method == NULL) {
618 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
622 s = OPENSSL_zalloc(sizeof(*s));
626 s->lock = CRYPTO_THREAD_lock_new();
631 * If not using the standard RAND (say for fuzzing), then don't use a
634 if (RAND_get_rand_method() == RAND_OpenSSL()) {
635 s->drbg = RAND_DRBG_new(NID_aes_128_ctr, RAND_DRBG_FLAG_CTR_USE_DF,
636 RAND_DRBG_get0_global());
638 || RAND_DRBG_instantiate(s->drbg, NULL, 0) == 0) {
639 CRYPTO_THREAD_lock_free(s->lock);
644 RECORD_LAYER_init(&s->rlayer, s);
646 s->options = ctx->options;
647 s->dane.flags = ctx->dane.flags;
648 s->min_proto_version = ctx->min_proto_version;
649 s->max_proto_version = ctx->max_proto_version;
651 s->max_cert_list = ctx->max_cert_list;
653 s->max_early_data = ctx->max_early_data;
656 * Earlier library versions used to copy the pointer to the CERT, not
657 * its contents; only when setting new parameters for the per-SSL
658 * copy, ssl_cert_new would be called (and the direct reference to
659 * the per-SSL_CTX settings would be lost, but those still were
660 * indirectly accessed for various purposes, and for that reason they
661 * used to be known as s->ctx->default_cert). Now we don't look at the
662 * SSL_CTX's CERT after having duplicated it once.
664 s->cert = ssl_cert_dup(ctx->cert);
668 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
669 s->msg_callback = ctx->msg_callback;
670 s->msg_callback_arg = ctx->msg_callback_arg;
671 s->verify_mode = ctx->verify_mode;
672 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
673 s->record_padding_cb = ctx->record_padding_cb;
674 s->record_padding_arg = ctx->record_padding_arg;
675 s->block_padding = ctx->block_padding;
676 s->sid_ctx_length = ctx->sid_ctx_length;
677 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
679 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
680 s->verify_callback = ctx->default_verify_callback;
681 s->generate_session_id = ctx->generate_session_id;
683 s->param = X509_VERIFY_PARAM_new();
684 if (s->param == NULL)
686 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
687 s->quiet_shutdown = ctx->quiet_shutdown;
688 s->max_send_fragment = ctx->max_send_fragment;
689 s->split_send_fragment = ctx->split_send_fragment;
690 s->max_pipelines = ctx->max_pipelines;
691 if (s->max_pipelines > 1)
692 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
693 if (ctx->default_read_buf_len > 0)
694 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
699 s->ext.debug_arg = NULL;
700 s->ext.ticket_expected = 0;
701 s->ext.status_type = ctx->ext.status_type;
702 s->ext.status_expected = 0;
703 s->ext.ocsp.ids = NULL;
704 s->ext.ocsp.exts = NULL;
705 s->ext.ocsp.resp = NULL;
706 s->ext.ocsp.resp_len = 0;
708 s->session_ctx = ctx;
709 #ifndef OPENSSL_NO_EC
710 if (ctx->ext.ecpointformats) {
711 s->ext.ecpointformats =
712 OPENSSL_memdup(ctx->ext.ecpointformats,
713 ctx->ext.ecpointformats_len);
714 if (!s->ext.ecpointformats)
716 s->ext.ecpointformats_len =
717 ctx->ext.ecpointformats_len;
719 if (ctx->ext.supportedgroups) {
720 s->ext.supportedgroups =
721 OPENSSL_memdup(ctx->ext.supportedgroups,
722 ctx->ext.supportedgroups_len);
723 if (!s->ext.supportedgroups)
725 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
728 #ifndef OPENSSL_NO_NEXTPROTONEG
732 if (s->ctx->ext.alpn) {
733 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
734 if (s->ext.alpn == NULL)
736 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
737 s->ext.alpn_len = s->ctx->ext.alpn_len;
740 s->verified_chain = NULL;
741 s->verify_result = X509_V_OK;
743 s->default_passwd_callback = ctx->default_passwd_callback;
744 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
746 s->method = ctx->method;
748 s->key_update = SSL_KEY_UPDATE_NONE;
750 if (!s->method->ssl_new(s))
753 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
758 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
761 #ifndef OPENSSL_NO_PSK
762 s->psk_client_callback = ctx->psk_client_callback;
763 s->psk_server_callback = ctx->psk_server_callback;
765 s->psk_find_session_cb = ctx->psk_find_session_cb;
766 s->psk_use_session_cb = ctx->psk_use_session_cb;
770 #ifndef OPENSSL_NO_CT
771 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
772 ctx->ct_validation_callback_arg))
779 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
783 int SSL_is_dtls(const SSL *s)
785 return SSL_IS_DTLS(s) ? 1 : 0;
788 int SSL_up_ref(SSL *s)
792 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
795 REF_PRINT_COUNT("SSL", s);
796 REF_ASSERT_ISNT(i < 2);
797 return ((i > 1) ? 1 : 0);
800 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
801 unsigned int sid_ctx_len)
803 if (sid_ctx_len > sizeof ctx->sid_ctx) {
804 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
805 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
808 ctx->sid_ctx_length = sid_ctx_len;
809 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
814 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
815 unsigned int sid_ctx_len)
817 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
818 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
819 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
822 ssl->sid_ctx_length = sid_ctx_len;
823 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
828 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
830 CRYPTO_THREAD_write_lock(ctx->lock);
831 ctx->generate_session_id = cb;
832 CRYPTO_THREAD_unlock(ctx->lock);
836 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
838 CRYPTO_THREAD_write_lock(ssl->lock);
839 ssl->generate_session_id = cb;
840 CRYPTO_THREAD_unlock(ssl->lock);
844 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
848 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
849 * we can "construct" a session to give us the desired check - i.e. to
850 * find if there's a session in the hash table that would conflict with
851 * any new session built out of this id/id_len and the ssl_version in use
856 if (id_len > sizeof r.session_id)
859 r.ssl_version = ssl->version;
860 r.session_id_length = id_len;
861 memcpy(r.session_id, id, id_len);
863 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
864 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
865 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
869 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
871 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
874 int SSL_set_purpose(SSL *s, int purpose)
876 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
879 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
881 return X509_VERIFY_PARAM_set_trust(s->param, trust);
884 int SSL_set_trust(SSL *s, int trust)
886 return X509_VERIFY_PARAM_set_trust(s->param, trust);
889 int SSL_set1_host(SSL *s, const char *hostname)
891 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
894 int SSL_add1_host(SSL *s, const char *hostname)
896 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
899 void SSL_set_hostflags(SSL *s, unsigned int flags)
901 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
904 const char *SSL_get0_peername(SSL *s)
906 return X509_VERIFY_PARAM_get0_peername(s->param);
909 int SSL_CTX_dane_enable(SSL_CTX *ctx)
911 return dane_ctx_enable(&ctx->dane);
914 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
916 unsigned long orig = ctx->dane.flags;
918 ctx->dane.flags |= flags;
922 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
924 unsigned long orig = ctx->dane.flags;
926 ctx->dane.flags &= ~flags;
930 int SSL_dane_enable(SSL *s, const char *basedomain)
932 SSL_DANE *dane = &s->dane;
934 if (s->ctx->dane.mdmax == 0) {
935 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
938 if (dane->trecs != NULL) {
939 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
944 * Default SNI name. This rejects empty names, while set1_host below
945 * accepts them and disables host name checks. To avoid side-effects with
946 * invalid input, set the SNI name first.
948 if (s->ext.hostname == NULL) {
949 if (!SSL_set_tlsext_host_name(s, basedomain)) {
950 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
955 /* Primary RFC6125 reference identifier */
956 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
957 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
963 dane->dctx = &s->ctx->dane;
964 dane->trecs = sk_danetls_record_new_null();
966 if (dane->trecs == NULL) {
967 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
973 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
975 unsigned long orig = ssl->dane.flags;
977 ssl->dane.flags |= flags;
981 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
983 unsigned long orig = ssl->dane.flags;
985 ssl->dane.flags &= ~flags;
989 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
991 SSL_DANE *dane = &s->dane;
993 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
997 *mcert = dane->mcert;
999 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1004 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1005 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1007 SSL_DANE *dane = &s->dane;
1009 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1013 *usage = dane->mtlsa->usage;
1015 *selector = dane->mtlsa->selector;
1017 *mtype = dane->mtlsa->mtype;
1019 *data = dane->mtlsa->data;
1021 *dlen = dane->mtlsa->dlen;
1026 SSL_DANE *SSL_get0_dane(SSL *s)
1031 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1032 uint8_t mtype, unsigned char *data, size_t dlen)
1034 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1037 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1040 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1043 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1045 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1048 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1050 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1053 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1058 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1063 void SSL_certs_clear(SSL *s)
1065 ssl_cert_clear_certs(s->cert);
1068 void SSL_free(SSL *s)
1075 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1076 REF_PRINT_COUNT("SSL", s);
1079 REF_ASSERT_ISNT(i < 0);
1081 X509_VERIFY_PARAM_free(s->param);
1082 dane_final(&s->dane);
1083 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1085 /* Ignore return value */
1086 ssl_free_wbio_buffer(s);
1088 BIO_free_all(s->wbio);
1089 BIO_free_all(s->rbio);
1091 BUF_MEM_free(s->init_buf);
1093 /* add extra stuff */
1094 sk_SSL_CIPHER_free(s->cipher_list);
1095 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1097 /* Make the next call work :-) */
1098 if (s->session != NULL) {
1099 ssl_clear_bad_session(s);
1100 SSL_SESSION_free(s->session);
1102 SSL_SESSION_free(s->psksession);
1103 OPENSSL_free(s->psksession_id);
1107 ssl_cert_free(s->cert);
1108 /* Free up if allocated */
1110 OPENSSL_free(s->ext.hostname);
1111 SSL_CTX_free(s->session_ctx);
1112 #ifndef OPENSSL_NO_EC
1113 OPENSSL_free(s->ext.ecpointformats);
1114 OPENSSL_free(s->ext.supportedgroups);
1115 #endif /* OPENSSL_NO_EC */
1116 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1117 #ifndef OPENSSL_NO_OCSP
1118 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1120 #ifndef OPENSSL_NO_CT
1121 SCT_LIST_free(s->scts);
1122 OPENSSL_free(s->ext.scts);
1124 OPENSSL_free(s->ext.ocsp.resp);
1125 OPENSSL_free(s->ext.alpn);
1126 OPENSSL_free(s->ext.tls13_cookie);
1127 OPENSSL_free(s->clienthello);
1129 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1131 sk_X509_pop_free(s->verified_chain, X509_free);
1133 if (s->method != NULL)
1134 s->method->ssl_free(s);
1136 RECORD_LAYER_release(&s->rlayer);
1138 SSL_CTX_free(s->ctx);
1140 ASYNC_WAIT_CTX_free(s->waitctx);
1142 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1143 OPENSSL_free(s->ext.npn);
1146 #ifndef OPENSSL_NO_SRTP
1147 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1150 RAND_DRBG_free(s->drbg);
1151 CRYPTO_THREAD_lock_free(s->lock);
1156 void SSL_set0_rbio(SSL *s, BIO *rbio)
1158 BIO_free_all(s->rbio);
1162 void SSL_set0_wbio(SSL *s, BIO *wbio)
1165 * If the output buffering BIO is still in place, remove it
1167 if (s->bbio != NULL)
1168 s->wbio = BIO_pop(s->wbio);
1170 BIO_free_all(s->wbio);
1173 /* Re-attach |bbio| to the new |wbio|. */
1174 if (s->bbio != NULL)
1175 s->wbio = BIO_push(s->bbio, s->wbio);
1178 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1181 * For historical reasons, this function has many different cases in
1182 * ownership handling.
1185 /* If nothing has changed, do nothing */
1186 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1190 * If the two arguments are equal then one fewer reference is granted by the
1191 * caller than we want to take
1193 if (rbio != NULL && rbio == wbio)
1197 * If only the wbio is changed only adopt one reference.
1199 if (rbio == SSL_get_rbio(s)) {
1200 SSL_set0_wbio(s, wbio);
1204 * There is an asymmetry here for historical reasons. If only the rbio is
1205 * changed AND the rbio and wbio were originally different, then we only
1206 * adopt one reference.
1208 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1209 SSL_set0_rbio(s, rbio);
1213 /* Otherwise, adopt both references. */
1214 SSL_set0_rbio(s, rbio);
1215 SSL_set0_wbio(s, wbio);
1218 BIO *SSL_get_rbio(const SSL *s)
1223 BIO *SSL_get_wbio(const SSL *s)
1225 if (s->bbio != NULL) {
1227 * If |bbio| is active, the true caller-configured BIO is its
1230 return BIO_next(s->bbio);
1235 int SSL_get_fd(const SSL *s)
1237 return SSL_get_rfd(s);
1240 int SSL_get_rfd(const SSL *s)
1245 b = SSL_get_rbio(s);
1246 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1248 BIO_get_fd(r, &ret);
1252 int SSL_get_wfd(const SSL *s)
1257 b = SSL_get_wbio(s);
1258 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1260 BIO_get_fd(r, &ret);
1264 #ifndef OPENSSL_NO_SOCK
1265 int SSL_set_fd(SSL *s, int fd)
1270 bio = BIO_new(BIO_s_socket());
1273 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1276 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1277 SSL_set_bio(s, bio, bio);
1283 int SSL_set_wfd(SSL *s, int fd)
1285 BIO *rbio = SSL_get_rbio(s);
1287 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1288 || (int)BIO_get_fd(rbio, NULL) != fd) {
1289 BIO *bio = BIO_new(BIO_s_socket());
1292 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1295 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1296 SSL_set0_wbio(s, bio);
1299 SSL_set0_wbio(s, rbio);
1304 int SSL_set_rfd(SSL *s, int fd)
1306 BIO *wbio = SSL_get_wbio(s);
1308 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1309 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1310 BIO *bio = BIO_new(BIO_s_socket());
1313 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1316 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1317 SSL_set0_rbio(s, bio);
1320 SSL_set0_rbio(s, wbio);
1327 /* return length of latest Finished message we sent, copy to 'buf' */
1328 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1332 if (s->s3 != NULL) {
1333 ret = s->s3->tmp.finish_md_len;
1336 memcpy(buf, s->s3->tmp.finish_md, count);
1341 /* return length of latest Finished message we expected, copy to 'buf' */
1342 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1346 if (s->s3 != NULL) {
1347 ret = s->s3->tmp.peer_finish_md_len;
1350 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1355 int SSL_get_verify_mode(const SSL *s)
1357 return (s->verify_mode);
1360 int SSL_get_verify_depth(const SSL *s)
1362 return X509_VERIFY_PARAM_get_depth(s->param);
1365 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1366 return (s->verify_callback);
1369 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1371 return (ctx->verify_mode);
1374 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1376 return X509_VERIFY_PARAM_get_depth(ctx->param);
1379 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1380 return (ctx->default_verify_callback);
1383 void SSL_set_verify(SSL *s, int mode,
1384 int (*callback) (int ok, X509_STORE_CTX *ctx))
1386 s->verify_mode = mode;
1387 if (callback != NULL)
1388 s->verify_callback = callback;
1391 void SSL_set_verify_depth(SSL *s, int depth)
1393 X509_VERIFY_PARAM_set_depth(s->param, depth);
1396 void SSL_set_read_ahead(SSL *s, int yes)
1398 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1401 int SSL_get_read_ahead(const SSL *s)
1403 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1406 int SSL_pending(const SSL *s)
1408 size_t pending = s->method->ssl_pending(s);
1411 * SSL_pending cannot work properly if read-ahead is enabled
1412 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1413 * impossible to fix since SSL_pending cannot report errors that may be
1414 * observed while scanning the new data. (Note that SSL_pending() is
1415 * often used as a boolean value, so we'd better not return -1.)
1417 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1418 * we just return INT_MAX.
1420 return pending < INT_MAX ? (int)pending : INT_MAX;
1423 int SSL_has_pending(const SSL *s)
1426 * Similar to SSL_pending() but returns a 1 to indicate that we have
1427 * unprocessed data available or 0 otherwise (as opposed to the number of
1428 * bytes available). Unlike SSL_pending() this will take into account
1429 * read_ahead data. A 1 return simply indicates that we have unprocessed
1430 * data. That data may not result in any application data, or we may fail
1431 * to parse the records for some reason.
1433 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1436 return RECORD_LAYER_read_pending(&s->rlayer);
1439 X509 *SSL_get_peer_certificate(const SSL *s)
1443 if ((s == NULL) || (s->session == NULL))
1446 r = s->session->peer;
1456 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1460 if ((s == NULL) || (s->session == NULL))
1463 r = s->session->peer_chain;
1466 * If we are a client, cert_chain includes the peer's own certificate; if
1467 * we are a server, it does not.
1474 * Now in theory, since the calling process own 't' it should be safe to
1475 * modify. We need to be able to read f without being hassled
1477 int SSL_copy_session_id(SSL *t, const SSL *f)
1480 /* Do we need to to SSL locking? */
1481 if (!SSL_set_session(t, SSL_get_session(f))) {
1486 * what if we are setup for one protocol version but want to talk another
1488 if (t->method != f->method) {
1489 t->method->ssl_free(t);
1490 t->method = f->method;
1491 if (t->method->ssl_new(t) == 0)
1495 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1496 ssl_cert_free(t->cert);
1498 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1505 /* Fix this so it checks all the valid key/cert options */
1506 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1508 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1509 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1512 if (ctx->cert->key->privatekey == NULL) {
1513 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1516 return (X509_check_private_key
1517 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1520 /* Fix this function so that it takes an optional type parameter */
1521 int SSL_check_private_key(const SSL *ssl)
1524 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1527 if (ssl->cert->key->x509 == NULL) {
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1531 if (ssl->cert->key->privatekey == NULL) {
1532 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1535 return (X509_check_private_key(ssl->cert->key->x509,
1536 ssl->cert->key->privatekey));
1539 int SSL_waiting_for_async(SSL *s)
1547 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1549 ASYNC_WAIT_CTX *ctx = s->waitctx;
1553 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1556 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1557 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1559 ASYNC_WAIT_CTX *ctx = s->waitctx;
1563 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1567 int SSL_accept(SSL *s)
1569 if (s->handshake_func == NULL) {
1570 /* Not properly initialized yet */
1571 SSL_set_accept_state(s);
1574 return SSL_do_handshake(s);
1577 int SSL_connect(SSL *s)
1579 if (s->handshake_func == NULL) {
1580 /* Not properly initialized yet */
1581 SSL_set_connect_state(s);
1584 return SSL_do_handshake(s);
1587 long SSL_get_default_timeout(const SSL *s)
1589 return (s->method->get_timeout());
1592 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1593 int (*func) (void *))
1596 if (s->waitctx == NULL) {
1597 s->waitctx = ASYNC_WAIT_CTX_new();
1598 if (s->waitctx == NULL)
1601 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1602 sizeof(struct ssl_async_args))) {
1604 s->rwstate = SSL_NOTHING;
1605 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1608 s->rwstate = SSL_ASYNC_PAUSED;
1611 s->rwstate = SSL_ASYNC_NO_JOBS;
1617 s->rwstate = SSL_NOTHING;
1618 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1619 /* Shouldn't happen */
1624 static int ssl_io_intern(void *vargs)
1626 struct ssl_async_args *args;
1631 args = (struct ssl_async_args *)vargs;
1635 switch (args->type) {
1637 return args->f.func_read(s, buf, num, &s->asyncrw);
1639 return args->f.func_write(s, buf, num, &s->asyncrw);
1641 return args->f.func_other(s);
1646 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1648 if (s->handshake_func == NULL) {
1649 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1653 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1654 s->rwstate = SSL_NOTHING;
1658 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1659 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1660 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1664 * If we are a client and haven't received the ServerHello etc then we
1667 ossl_statem_check_finish_init(s, 0);
1669 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1670 struct ssl_async_args args;
1676 args.type = READFUNC;
1677 args.f.func_read = s->method->ssl_read;
1679 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1680 *readbytes = s->asyncrw;
1683 return s->method->ssl_read(s, buf, num, readbytes);
1687 int SSL_read(SSL *s, void *buf, int num)
1693 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1697 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1700 * The cast is safe here because ret should be <= INT_MAX because num is
1704 ret = (int)readbytes;
1709 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1711 int ret = ssl_read_internal(s, buf, num, readbytes);
1718 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1723 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1724 return SSL_READ_EARLY_DATA_ERROR;
1727 switch (s->early_data_state) {
1728 case SSL_EARLY_DATA_NONE:
1729 if (!SSL_in_before(s)) {
1730 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1731 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1732 return SSL_READ_EARLY_DATA_ERROR;
1736 case SSL_EARLY_DATA_ACCEPT_RETRY:
1737 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1738 ret = SSL_accept(s);
1741 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1742 return SSL_READ_EARLY_DATA_ERROR;
1746 case SSL_EARLY_DATA_READ_RETRY:
1747 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1748 s->early_data_state = SSL_EARLY_DATA_READING;
1749 ret = SSL_read_ex(s, buf, num, readbytes);
1751 * State machine will update early_data_state to
1752 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1755 if (ret > 0 || (ret <= 0 && s->early_data_state
1756 != SSL_EARLY_DATA_FINISHED_READING)) {
1757 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1758 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1759 : SSL_READ_EARLY_DATA_ERROR;
1762 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1765 return SSL_READ_EARLY_DATA_FINISH;
1768 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1769 return SSL_READ_EARLY_DATA_ERROR;
1773 int SSL_get_early_data_status(const SSL *s)
1775 return s->ext.early_data;
1778 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1780 if (s->handshake_func == NULL) {
1781 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1785 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1788 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1789 struct ssl_async_args args;
1795 args.type = READFUNC;
1796 args.f.func_read = s->method->ssl_peek;
1798 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1799 *readbytes = s->asyncrw;
1802 return s->method->ssl_peek(s, buf, num, readbytes);
1806 int SSL_peek(SSL *s, void *buf, int num)
1812 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1816 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1819 * The cast is safe here because ret should be <= INT_MAX because num is
1823 ret = (int)readbytes;
1829 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1831 int ret = ssl_peek_internal(s, buf, num, readbytes);
1838 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1840 if (s->handshake_func == NULL) {
1841 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1845 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1846 s->rwstate = SSL_NOTHING;
1847 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1851 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1852 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1853 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1854 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1857 /* If we are a client and haven't sent the Finished we better do that */
1858 ossl_statem_check_finish_init(s, 1);
1860 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1862 struct ssl_async_args args;
1865 args.buf = (void *)buf;
1867 args.type = WRITEFUNC;
1868 args.f.func_write = s->method->ssl_write;
1870 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1871 *written = s->asyncrw;
1874 return s->method->ssl_write(s, buf, num, written);
1878 int SSL_write(SSL *s, const void *buf, int num)
1884 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1888 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1891 * The cast is safe here because ret should be <= INT_MAX because num is
1900 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1902 int ret = ssl_write_internal(s, buf, num, written);
1909 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1911 int ret, early_data_state;
1913 switch (s->early_data_state) {
1914 case SSL_EARLY_DATA_NONE:
1916 || !SSL_in_before(s)
1917 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1918 && (s->psk_use_session_cb == NULL))) {
1919 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1920 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1925 case SSL_EARLY_DATA_CONNECT_RETRY:
1926 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1927 ret = SSL_connect(s);
1930 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1935 case SSL_EARLY_DATA_WRITE_RETRY:
1936 s->early_data_state = SSL_EARLY_DATA_WRITING;
1937 ret = SSL_write_ex(s, buf, num, written);
1938 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1941 case SSL_EARLY_DATA_FINISHED_READING:
1942 case SSL_EARLY_DATA_READ_RETRY:
1943 early_data_state = s->early_data_state;
1944 /* We are a server writing to an unauthenticated client */
1945 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1946 ret = SSL_write_ex(s, buf, num, written);
1947 s->early_data_state = early_data_state;
1951 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1956 int SSL_shutdown(SSL *s)
1959 * Note that this function behaves differently from what one might
1960 * expect. Return values are 0 for no success (yet), 1 for success; but
1961 * calling it once is usually not enough, even if blocking I/O is used
1962 * (see ssl3_shutdown).
1965 if (s->handshake_func == NULL) {
1966 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1970 if (!SSL_in_init(s)) {
1971 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1972 struct ssl_async_args args;
1975 args.type = OTHERFUNC;
1976 args.f.func_other = s->method->ssl_shutdown;
1978 return ssl_start_async_job(s, &args, ssl_io_intern);
1980 return s->method->ssl_shutdown(s);
1983 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1988 int SSL_key_update(SSL *s, int updatetype)
1991 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1992 * negotiated, and that it is appropriate to call SSL_key_update() instead
1993 * of SSL_renegotiate().
1995 if (!SSL_IS_TLS13(s)) {
1996 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2000 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2001 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2006 if (!SSL_is_init_finished(s)) {
2007 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2011 ossl_statem_set_in_init(s, 1);
2012 s->key_update = updatetype;
2016 int SSL_get_key_update_type(SSL *s)
2018 return s->key_update;
2021 int SSL_renegotiate(SSL *s)
2023 if (SSL_IS_TLS13(s)) {
2024 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2028 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2029 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2036 return (s->method->ssl_renegotiate(s));
2039 int SSL_renegotiate_abbreviated(SSL *s)
2041 if (SSL_IS_TLS13(s)) {
2042 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2046 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2047 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2054 return (s->method->ssl_renegotiate(s));
2057 int SSL_renegotiate_pending(SSL *s)
2060 * becomes true when negotiation is requested; false again once a
2061 * handshake has finished
2063 return (s->renegotiate != 0);
2066 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2071 case SSL_CTRL_GET_READ_AHEAD:
2072 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
2073 case SSL_CTRL_SET_READ_AHEAD:
2074 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2075 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2078 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2079 s->msg_callback_arg = parg;
2083 return (s->mode |= larg);
2084 case SSL_CTRL_CLEAR_MODE:
2085 return (s->mode &= ~larg);
2086 case SSL_CTRL_GET_MAX_CERT_LIST:
2087 return (long)(s->max_cert_list);
2088 case SSL_CTRL_SET_MAX_CERT_LIST:
2091 l = (long)s->max_cert_list;
2092 s->max_cert_list = (size_t)larg;
2094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2095 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2097 s->max_send_fragment = larg;
2098 if (s->max_send_fragment < s->split_send_fragment)
2099 s->split_send_fragment = s->max_send_fragment;
2101 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2102 if ((size_t)larg > s->max_send_fragment || larg == 0)
2104 s->split_send_fragment = larg;
2106 case SSL_CTRL_SET_MAX_PIPELINES:
2107 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2109 s->max_pipelines = larg;
2111 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2113 case SSL_CTRL_GET_RI_SUPPORT:
2115 return s->s3->send_connection_binding;
2118 case SSL_CTRL_CERT_FLAGS:
2119 return (s->cert->cert_flags |= larg);
2120 case SSL_CTRL_CLEAR_CERT_FLAGS:
2121 return (s->cert->cert_flags &= ~larg);
2123 case SSL_CTRL_GET_RAW_CIPHERLIST:
2125 if (s->s3->tmp.ciphers_raw == NULL)
2127 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2128 return (int)s->s3->tmp.ciphers_rawlen;
2130 return TLS_CIPHER_LEN;
2132 case SSL_CTRL_GET_EXTMS_SUPPORT:
2133 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2135 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2139 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2140 return ssl_check_allowed_versions(larg, s->max_proto_version)
2141 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2142 &s->min_proto_version);
2143 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2144 return ssl_check_allowed_versions(s->min_proto_version, larg)
2145 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2146 &s->max_proto_version);
2148 return (s->method->ssl_ctrl(s, cmd, larg, parg));
2152 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2155 case SSL_CTRL_SET_MSG_CALLBACK:
2156 s->msg_callback = (void (*)
2157 (int write_p, int version, int content_type,
2158 const void *buf, size_t len, SSL *ssl,
2163 return (s->method->ssl_callback_ctrl(s, cmd, fp));
2167 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2169 return ctx->sessions;
2172 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2175 /* For some cases with ctx == NULL perform syntax checks */
2178 #ifndef OPENSSL_NO_EC
2179 case SSL_CTRL_SET_GROUPS_LIST:
2180 return tls1_set_groups_list(NULL, NULL, parg);
2182 case SSL_CTRL_SET_SIGALGS_LIST:
2183 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2184 return tls1_set_sigalgs_list(NULL, parg, 0);
2191 case SSL_CTRL_GET_READ_AHEAD:
2192 return (ctx->read_ahead);
2193 case SSL_CTRL_SET_READ_AHEAD:
2194 l = ctx->read_ahead;
2195 ctx->read_ahead = larg;
2198 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2199 ctx->msg_callback_arg = parg;
2202 case SSL_CTRL_GET_MAX_CERT_LIST:
2203 return (long)(ctx->max_cert_list);
2204 case SSL_CTRL_SET_MAX_CERT_LIST:
2207 l = (long)ctx->max_cert_list;
2208 ctx->max_cert_list = (size_t)larg;
2211 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2214 l = (long)ctx->session_cache_size;
2215 ctx->session_cache_size = (size_t)larg;
2217 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2218 return (long)(ctx->session_cache_size);
2219 case SSL_CTRL_SET_SESS_CACHE_MODE:
2220 l = ctx->session_cache_mode;
2221 ctx->session_cache_mode = larg;
2223 case SSL_CTRL_GET_SESS_CACHE_MODE:
2224 return (ctx->session_cache_mode);
2226 case SSL_CTRL_SESS_NUMBER:
2227 return (lh_SSL_SESSION_num_items(ctx->sessions));
2228 case SSL_CTRL_SESS_CONNECT:
2229 return (ctx->stats.sess_connect);
2230 case SSL_CTRL_SESS_CONNECT_GOOD:
2231 return (ctx->stats.sess_connect_good);
2232 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2233 return (ctx->stats.sess_connect_renegotiate);
2234 case SSL_CTRL_SESS_ACCEPT:
2235 return (ctx->stats.sess_accept);
2236 case SSL_CTRL_SESS_ACCEPT_GOOD:
2237 return (ctx->stats.sess_accept_good);
2238 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2239 return (ctx->stats.sess_accept_renegotiate);
2240 case SSL_CTRL_SESS_HIT:
2241 return (ctx->stats.sess_hit);
2242 case SSL_CTRL_SESS_CB_HIT:
2243 return (ctx->stats.sess_cb_hit);
2244 case SSL_CTRL_SESS_MISSES:
2245 return (ctx->stats.sess_miss);
2246 case SSL_CTRL_SESS_TIMEOUTS:
2247 return (ctx->stats.sess_timeout);
2248 case SSL_CTRL_SESS_CACHE_FULL:
2249 return (ctx->stats.sess_cache_full);
2251 return (ctx->mode |= larg);
2252 case SSL_CTRL_CLEAR_MODE:
2253 return (ctx->mode &= ~larg);
2254 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2255 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2257 ctx->max_send_fragment = larg;
2258 if (ctx->max_send_fragment < ctx->split_send_fragment)
2259 ctx->split_send_fragment = ctx->max_send_fragment;
2261 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2262 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2264 ctx->split_send_fragment = larg;
2266 case SSL_CTRL_SET_MAX_PIPELINES:
2267 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2269 ctx->max_pipelines = larg;
2271 case SSL_CTRL_CERT_FLAGS:
2272 return (ctx->cert->cert_flags |= larg);
2273 case SSL_CTRL_CLEAR_CERT_FLAGS:
2274 return (ctx->cert->cert_flags &= ~larg);
2275 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2276 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2277 && ssl_set_version_bound(ctx->method->version, (int)larg,
2278 &ctx->min_proto_version);
2279 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2280 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2281 && ssl_set_version_bound(ctx->method->version, (int)larg,
2282 &ctx->max_proto_version);
2284 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
2288 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2291 case SSL_CTRL_SET_MSG_CALLBACK:
2292 ctx->msg_callback = (void (*)
2293 (int write_p, int version, int content_type,
2294 const void *buf, size_t len, SSL *ssl,
2299 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
2303 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2312 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2313 const SSL_CIPHER *const *bp)
2315 if ((*ap)->id > (*bp)->id)
2317 if ((*ap)->id < (*bp)->id)
2322 /** return a STACK of the ciphers available for the SSL and in order of
2324 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2327 if (s->cipher_list != NULL) {
2328 return (s->cipher_list);
2329 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2330 return (s->ctx->cipher_list);
2336 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2338 if ((s == NULL) || (s->session == NULL) || !s->server)
2340 return s->session->ciphers;
2343 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2345 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2347 ciphers = SSL_get_ciphers(s);
2350 ssl_set_client_disabled(s);
2351 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2352 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2353 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2355 sk = sk_SSL_CIPHER_new_null();
2358 if (!sk_SSL_CIPHER_push(sk, c)) {
2359 sk_SSL_CIPHER_free(sk);
2367 /** return a STACK of the ciphers available for the SSL and in order of
2369 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2372 if (s->cipher_list_by_id != NULL) {
2373 return (s->cipher_list_by_id);
2374 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2375 return (s->ctx->cipher_list_by_id);
2381 /** The old interface to get the same thing as SSL_get_ciphers() */
2382 const char *SSL_get_cipher_list(const SSL *s, int n)
2384 const SSL_CIPHER *c;
2385 STACK_OF(SSL_CIPHER) *sk;
2389 sk = SSL_get_ciphers(s);
2390 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2392 c = sk_SSL_CIPHER_value(sk, n);
2398 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2400 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2403 return ctx->cipher_list;
2407 /** specify the ciphers to be used by default by the SSL_CTX */
2408 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2410 STACK_OF(SSL_CIPHER) *sk;
2412 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2413 &ctx->cipher_list_by_id, str, ctx->cert);
2415 * ssl_create_cipher_list may return an empty stack if it was unable to
2416 * find a cipher matching the given rule string (for example if the rule
2417 * string specifies a cipher which has been disabled). This is not an
2418 * error as far as ssl_create_cipher_list is concerned, and hence
2419 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2423 else if (sk_SSL_CIPHER_num(sk) == 0) {
2424 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2430 /** specify the ciphers to be used by the SSL */
2431 int SSL_set_cipher_list(SSL *s, const char *str)
2433 STACK_OF(SSL_CIPHER) *sk;
2435 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2436 &s->cipher_list_by_id, str, s->cert);
2437 /* see comment in SSL_CTX_set_cipher_list */
2440 else if (sk_SSL_CIPHER_num(sk) == 0) {
2441 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2447 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2450 STACK_OF(SSL_CIPHER) *sk;
2451 const SSL_CIPHER *c;
2454 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2458 sk = s->session->ciphers;
2460 if (sk_SSL_CIPHER_num(sk) == 0)
2463 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2466 c = sk_SSL_CIPHER_value(sk, i);
2467 n = strlen(c->name);
2474 memcpy(p, c->name, n + 1);
2483 /** return a servername extension value if provided in Client Hello, or NULL.
2484 * So far, only host_name types are defined (RFC 3546).
2487 const char *SSL_get_servername(const SSL *s, const int type)
2489 if (type != TLSEXT_NAMETYPE_host_name)
2492 return s->session && !s->ext.hostname ?
2493 s->session->ext.hostname : s->ext.hostname;
2496 int SSL_get_servername_type(const SSL *s)
2499 && (!s->ext.hostname ? s->session->
2500 ext.hostname : s->ext.hostname))
2501 return TLSEXT_NAMETYPE_host_name;
2506 * SSL_select_next_proto implements the standard protocol selection. It is
2507 * expected that this function is called from the callback set by
2508 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2509 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2510 * not included in the length. A byte string of length 0 is invalid. No byte
2511 * string may be truncated. The current, but experimental algorithm for
2512 * selecting the protocol is: 1) If the server doesn't support NPN then this
2513 * is indicated to the callback. In this case, the client application has to
2514 * abort the connection or have a default application level protocol. 2) If
2515 * the server supports NPN, but advertises an empty list then the client
2516 * selects the first protocol in its list, but indicates via the API that this
2517 * fallback case was enacted. 3) Otherwise, the client finds the first
2518 * protocol in the server's list that it supports and selects this protocol.
2519 * This is because it's assumed that the server has better information about
2520 * which protocol a client should use. 4) If the client doesn't support any
2521 * of the server's advertised protocols, then this is treated the same as
2522 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2523 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2525 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2526 const unsigned char *server,
2527 unsigned int server_len,
2528 const unsigned char *client, unsigned int client_len)
2531 const unsigned char *result;
2532 int status = OPENSSL_NPN_UNSUPPORTED;
2535 * For each protocol in server preference order, see if we support it.
2537 for (i = 0; i < server_len;) {
2538 for (j = 0; j < client_len;) {
2539 if (server[i] == client[j] &&
2540 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2541 /* We found a match */
2542 result = &server[i];
2543 status = OPENSSL_NPN_NEGOTIATED;
2553 /* There's no overlap between our protocols and the server's list. */
2555 status = OPENSSL_NPN_NO_OVERLAP;
2558 *out = (unsigned char *)result + 1;
2559 *outlen = result[0];
2563 #ifndef OPENSSL_NO_NEXTPROTONEG
2565 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2566 * client's requested protocol for this connection and returns 0. If the
2567 * client didn't request any protocol, then *data is set to NULL. Note that
2568 * the client can request any protocol it chooses. The value returned from
2569 * this function need not be a member of the list of supported protocols
2570 * provided by the callback.
2572 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2579 *len = (unsigned int)s->ext.npn_len;
2584 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2585 * a TLS server needs a list of supported protocols for Next Protocol
2586 * Negotiation. The returned list must be in wire format. The list is
2587 * returned by setting |out| to point to it and |outlen| to its length. This
2588 * memory will not be modified, but one should assume that the SSL* keeps a
2589 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2590 * wishes to advertise. Otherwise, no such extension will be included in the
2593 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2594 SSL_CTX_npn_advertised_cb_func cb,
2597 ctx->ext.npn_advertised_cb = cb;
2598 ctx->ext.npn_advertised_cb_arg = arg;
2602 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2603 * client needs to select a protocol from the server's provided list. |out|
2604 * must be set to point to the selected protocol (which may be within |in|).
2605 * The length of the protocol name must be written into |outlen|. The
2606 * server's advertised protocols are provided in |in| and |inlen|. The
2607 * callback can assume that |in| is syntactically valid. The client must
2608 * select a protocol. It is fatal to the connection if this callback returns
2609 * a value other than SSL_TLSEXT_ERR_OK.
2611 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2612 SSL_CTX_npn_select_cb_func cb,
2615 ctx->ext.npn_select_cb = cb;
2616 ctx->ext.npn_select_cb_arg = arg;
2621 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2622 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2623 * length-prefixed strings). Returns 0 on success.
2625 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2626 unsigned int protos_len)
2628 OPENSSL_free(ctx->ext.alpn);
2629 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2630 if (ctx->ext.alpn == NULL) {
2631 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2634 ctx->ext.alpn_len = protos_len;
2640 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2641 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2642 * length-prefixed strings). Returns 0 on success.
2644 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2645 unsigned int protos_len)
2647 OPENSSL_free(ssl->ext.alpn);
2648 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2649 if (ssl->ext.alpn == NULL) {
2650 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2653 ssl->ext.alpn_len = protos_len;
2659 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2660 * called during ClientHello processing in order to select an ALPN protocol
2661 * from the client's list of offered protocols.
2663 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2664 SSL_CTX_alpn_select_cb_func cb,
2667 ctx->ext.alpn_select_cb = cb;
2668 ctx->ext.alpn_select_cb_arg = arg;
2672 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2673 * On return it sets |*data| to point to |*len| bytes of protocol name
2674 * (not including the leading length-prefix byte). If the server didn't
2675 * respond with a negotiated protocol then |*len| will be zero.
2677 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2682 *data = ssl->s3->alpn_selected;
2686 *len = (unsigned int)ssl->s3->alpn_selected_len;
2689 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2690 const char *label, size_t llen,
2691 const unsigned char *context, size_t contextlen,
2694 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2697 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2699 contextlen, use_context);
2702 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2704 const unsigned char *session_id = a->session_id;
2706 unsigned char tmp_storage[4];
2708 if (a->session_id_length < sizeof(tmp_storage)) {
2709 memset(tmp_storage, 0, sizeof(tmp_storage));
2710 memcpy(tmp_storage, a->session_id, a->session_id_length);
2711 session_id = tmp_storage;
2715 ((unsigned long)session_id[0]) |
2716 ((unsigned long)session_id[1] << 8L) |
2717 ((unsigned long)session_id[2] << 16L) |
2718 ((unsigned long)session_id[3] << 24L);
2723 * NB: If this function (or indeed the hash function which uses a sort of
2724 * coarser function than this one) is changed, ensure
2725 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2726 * being able to construct an SSL_SESSION that will collide with any existing
2727 * session with a matching session ID.
2729 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2731 if (a->ssl_version != b->ssl_version)
2733 if (a->session_id_length != b->session_id_length)
2735 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2739 * These wrapper functions should remain rather than redeclaring
2740 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2741 * variable. The reason is that the functions aren't static, they're exposed
2745 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2747 SSL_CTX *ret = NULL;
2750 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2754 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2757 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2758 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2761 ret = OPENSSL_zalloc(sizeof(*ret));
2766 ret->min_proto_version = 0;
2767 ret->max_proto_version = 0;
2768 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2769 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2770 /* We take the system default. */
2771 ret->session_timeout = meth->get_timeout();
2772 ret->references = 1;
2773 ret->lock = CRYPTO_THREAD_lock_new();
2774 if (ret->lock == NULL) {
2775 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2779 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2780 ret->verify_mode = SSL_VERIFY_NONE;
2781 if ((ret->cert = ssl_cert_new()) == NULL)
2784 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2785 if (ret->sessions == NULL)
2787 ret->cert_store = X509_STORE_new();
2788 if (ret->cert_store == NULL)
2790 #ifndef OPENSSL_NO_CT
2791 ret->ctlog_store = CTLOG_STORE_new();
2792 if (ret->ctlog_store == NULL)
2795 if (!ssl_create_cipher_list(ret->method,
2796 &ret->cipher_list, &ret->cipher_list_by_id,
2797 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2798 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2799 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2803 ret->param = X509_VERIFY_PARAM_new();
2804 if (ret->param == NULL)
2807 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2808 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2811 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2812 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2816 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
2819 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2822 /* No compression for DTLS */
2823 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2824 ret->comp_methods = SSL_COMP_get_compression_methods();
2826 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2827 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2829 /* Setup RFC5077 ticket keys */
2830 if ((RAND_bytes(ret->ext.tick_key_name,
2831 sizeof(ret->ext.tick_key_name)) <= 0)
2832 || (RAND_bytes(ret->ext.tick_hmac_key,
2833 sizeof(ret->ext.tick_hmac_key)) <= 0)
2834 || (RAND_bytes(ret->ext.tick_aes_key,
2835 sizeof(ret->ext.tick_aes_key)) <= 0))
2836 ret->options |= SSL_OP_NO_TICKET;
2838 #ifndef OPENSSL_NO_SRP
2839 if (!SSL_CTX_SRP_CTX_init(ret))
2842 #ifndef OPENSSL_NO_ENGINE
2843 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2844 # define eng_strx(x) #x
2845 # define eng_str(x) eng_strx(x)
2846 /* Use specific client engine automatically... ignore errors */
2849 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2852 ENGINE_load_builtin_engines();
2853 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2855 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2861 * Default is to connect to non-RI servers. When RI is more widely
2862 * deployed might change this.
2864 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2866 * Disable compression by default to prevent CRIME. Applications can
2867 * re-enable compression by configuring
2868 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2869 * or by using the SSL_CONF library.
2871 ret->options |= SSL_OP_NO_COMPRESSION;
2873 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
2876 * Default max early data is a fully loaded single record. Could be split
2877 * across multiple records in practice
2879 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2883 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2889 int SSL_CTX_up_ref(SSL_CTX *ctx)
2893 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
2896 REF_PRINT_COUNT("SSL_CTX", ctx);
2897 REF_ASSERT_ISNT(i < 2);
2898 return ((i > 1) ? 1 : 0);
2901 void SSL_CTX_free(SSL_CTX *a)
2908 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
2909 REF_PRINT_COUNT("SSL_CTX", a);
2912 REF_ASSERT_ISNT(i < 0);
2914 X509_VERIFY_PARAM_free(a->param);
2915 dane_ctx_final(&a->dane);
2918 * Free internal session cache. However: the remove_cb() may reference
2919 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2920 * after the sessions were flushed.
2921 * As the ex_data handling routines might also touch the session cache,
2922 * the most secure solution seems to be: empty (flush) the cache, then
2923 * free ex_data, then finally free the cache.
2924 * (See ticket [openssl.org #212].)
2926 if (a->sessions != NULL)
2927 SSL_CTX_flush_sessions(a, 0);
2929 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2930 lh_SSL_SESSION_free(a->sessions);
2931 X509_STORE_free(a->cert_store);
2932 #ifndef OPENSSL_NO_CT
2933 CTLOG_STORE_free(a->ctlog_store);
2935 sk_SSL_CIPHER_free(a->cipher_list);
2936 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2937 ssl_cert_free(a->cert);
2938 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
2939 sk_X509_pop_free(a->extra_certs, X509_free);
2940 a->comp_methods = NULL;
2941 #ifndef OPENSSL_NO_SRTP
2942 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2944 #ifndef OPENSSL_NO_SRP
2945 SSL_CTX_SRP_CTX_free(a);
2947 #ifndef OPENSSL_NO_ENGINE
2948 ENGINE_finish(a->client_cert_engine);
2951 #ifndef OPENSSL_NO_EC
2952 OPENSSL_free(a->ext.ecpointformats);
2953 OPENSSL_free(a->ext.supportedgroups);
2955 OPENSSL_free(a->ext.alpn);
2957 CRYPTO_THREAD_lock_free(a->lock);
2962 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2964 ctx->default_passwd_callback = cb;
2967 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2969 ctx->default_passwd_callback_userdata = u;
2972 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2974 return ctx->default_passwd_callback;
2977 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2979 return ctx->default_passwd_callback_userdata;
2982 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2984 s->default_passwd_callback = cb;
2987 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2989 s->default_passwd_callback_userdata = u;
2992 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2994 return s->default_passwd_callback;
2997 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2999 return s->default_passwd_callback_userdata;
3002 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3003 int (*cb) (X509_STORE_CTX *, void *),
3006 ctx->app_verify_callback = cb;
3007 ctx->app_verify_arg = arg;
3010 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3011 int (*cb) (int, X509_STORE_CTX *))
3013 ctx->verify_mode = mode;
3014 ctx->default_verify_callback = cb;
3017 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3019 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3022 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3024 ssl_cert_set_cert_cb(c->cert, cb, arg);
3027 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3029 ssl_cert_set_cert_cb(s->cert, cb, arg);
3032 void ssl_set_masks(SSL *s)
3035 uint32_t *pvalid = s->s3->tmp.valid_flags;
3036 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3037 unsigned long mask_k, mask_a;
3038 #ifndef OPENSSL_NO_EC
3039 int have_ecc_cert, ecdsa_ok;
3044 #ifndef OPENSSL_NO_DH
3045 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3050 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3051 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3052 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3053 #ifndef OPENSSL_NO_EC
3054 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3060 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3061 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3064 #ifndef OPENSSL_NO_GOST
3065 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3066 mask_k |= SSL_kGOST;
3067 mask_a |= SSL_aGOST12;
3069 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3070 mask_k |= SSL_kGOST;
3071 mask_a |= SSL_aGOST12;
3073 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3074 mask_k |= SSL_kGOST;
3075 mask_a |= SSL_aGOST01;
3085 if (rsa_enc || rsa_sign) {
3093 mask_a |= SSL_aNULL;
3096 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3097 * depending on the key usage extension.
3099 #ifndef OPENSSL_NO_EC
3100 if (have_ecc_cert) {
3102 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3103 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3104 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3107 mask_a |= SSL_aECDSA;
3109 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3110 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3111 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3112 && TLS1_get_version(s) == TLS1_2_VERSION)
3113 mask_a |= SSL_aECDSA;
3116 #ifndef OPENSSL_NO_EC
3117 mask_k |= SSL_kECDHE;
3120 #ifndef OPENSSL_NO_PSK
3123 if (mask_k & SSL_kRSA)
3124 mask_k |= SSL_kRSAPSK;
3125 if (mask_k & SSL_kDHE)
3126 mask_k |= SSL_kDHEPSK;
3127 if (mask_k & SSL_kECDHE)
3128 mask_k |= SSL_kECDHEPSK;
3131 s->s3->tmp.mask_k = mask_k;
3132 s->s3->tmp.mask_a = mask_a;
3135 #ifndef OPENSSL_NO_EC
3137 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3139 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3140 /* key usage, if present, must allow signing */
3141 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3142 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3143 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3147 return 1; /* all checks are ok */
3152 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3153 size_t *serverinfo_length)
3155 CERT_PKEY *cpk = s->s3->tmp.cert;
3156 *serverinfo_length = 0;
3158 if (cpk == NULL || cpk->serverinfo == NULL)
3161 *serverinfo = cpk->serverinfo;
3162 *serverinfo_length = cpk->serverinfo_length;
3166 void ssl_update_cache(SSL *s, int mode)
3171 * If the session_id_length is 0, we are not supposed to cache it, and it
3172 * would be rather hard to do anyway :-)
3174 if (s->session->session_id_length == 0)
3177 i = s->session_ctx->session_cache_mode;
3179 && (!s->hit || SSL_IS_TLS13(s))
3180 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
3181 || SSL_CTX_add_session(s->session_ctx, s->session))
3182 && s->session_ctx->new_session_cb != NULL) {
3183 SSL_SESSION_up_ref(s->session);
3184 if (!s->session_ctx->new_session_cb(s, s->session))
3185 SSL_SESSION_free(s->session);
3188 /* auto flush every 255 connections */
3189 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3190 if ((((mode & SSL_SESS_CACHE_CLIENT)
3191 ? s->session_ctx->stats.sess_connect_good
3192 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3193 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3198 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
3203 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
3208 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3212 if (s->method != meth) {
3213 const SSL_METHOD *sm = s->method;
3214 int (*hf) (SSL *) = s->handshake_func;
3216 if (sm->version == meth->version)
3221 ret = s->method->ssl_new(s);
3224 if (hf == sm->ssl_connect)
3225 s->handshake_func = meth->ssl_connect;
3226 else if (hf == sm->ssl_accept)
3227 s->handshake_func = meth->ssl_accept;
3232 int SSL_get_error(const SSL *s, int i)
3239 return (SSL_ERROR_NONE);
3242 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3243 * where we do encode the error
3245 if ((l = ERR_peek_error()) != 0) {
3246 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3247 return (SSL_ERROR_SYSCALL);
3249 return (SSL_ERROR_SSL);
3252 if (SSL_want_read(s)) {
3253 bio = SSL_get_rbio(s);
3254 if (BIO_should_read(bio))
3255 return (SSL_ERROR_WANT_READ);
3256 else if (BIO_should_write(bio))
3258 * This one doesn't make too much sense ... We never try to write
3259 * to the rbio, and an application program where rbio and wbio
3260 * are separate couldn't even know what it should wait for.
3261 * However if we ever set s->rwstate incorrectly (so that we have
3262 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3263 * wbio *are* the same, this test works around that bug; so it
3264 * might be safer to keep it.
3266 return (SSL_ERROR_WANT_WRITE);
3267 else if (BIO_should_io_special(bio)) {
3268 reason = BIO_get_retry_reason(bio);
3269 if (reason == BIO_RR_CONNECT)
3270 return (SSL_ERROR_WANT_CONNECT);
3271 else if (reason == BIO_RR_ACCEPT)
3272 return (SSL_ERROR_WANT_ACCEPT);
3274 return (SSL_ERROR_SYSCALL); /* unknown */
3278 if (SSL_want_write(s)) {
3279 /* Access wbio directly - in order to use the buffered bio if present */
3281 if (BIO_should_write(bio))
3282 return (SSL_ERROR_WANT_WRITE);
3283 else if (BIO_should_read(bio))
3285 * See above (SSL_want_read(s) with BIO_should_write(bio))
3287 return (SSL_ERROR_WANT_READ);
3288 else if (BIO_should_io_special(bio)) {
3289 reason = BIO_get_retry_reason(bio);
3290 if (reason == BIO_RR_CONNECT)
3291 return (SSL_ERROR_WANT_CONNECT);
3292 else if (reason == BIO_RR_ACCEPT)
3293 return (SSL_ERROR_WANT_ACCEPT);
3295 return (SSL_ERROR_SYSCALL);
3298 if (SSL_want_x509_lookup(s))
3299 return (SSL_ERROR_WANT_X509_LOOKUP);
3300 if (SSL_want_async(s))
3301 return SSL_ERROR_WANT_ASYNC;
3302 if (SSL_want_async_job(s))
3303 return SSL_ERROR_WANT_ASYNC_JOB;
3304 if (SSL_want_client_hello_cb(s))
3305 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3307 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3308 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3309 return (SSL_ERROR_ZERO_RETURN);
3311 return (SSL_ERROR_SYSCALL);
3314 static int ssl_do_handshake_intern(void *vargs)
3316 struct ssl_async_args *args;
3319 args = (struct ssl_async_args *)vargs;
3322 return s->handshake_func(s);
3325 int SSL_do_handshake(SSL *s)
3329 if (s->handshake_func == NULL) {
3330 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3334 ossl_statem_check_finish_init(s, -1);
3336 s->method->ssl_renegotiate_check(s, 0);
3338 if (SSL_is_server(s)) {
3339 /* clear SNI settings at server-side */
3340 OPENSSL_free(s->ext.hostname);
3341 s->ext.hostname = NULL;
3344 if (SSL_in_init(s) || SSL_in_before(s)) {
3345 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3346 struct ssl_async_args args;
3350 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3352 ret = s->handshake_func(s);
3358 void SSL_set_accept_state(SSL *s)
3362 ossl_statem_clear(s);
3363 s->handshake_func = s->method->ssl_accept;
3367 void SSL_set_connect_state(SSL *s)
3371 ossl_statem_clear(s);
3372 s->handshake_func = s->method->ssl_connect;
3376 int ssl_undefined_function(SSL *s)
3378 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3382 int ssl_undefined_void_function(void)
3384 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3385 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3389 int ssl_undefined_const_function(const SSL *s)
3394 const SSL_METHOD *ssl_bad_method(int ver)
3396 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3400 const char *ssl_protocol_to_string(int version)
3404 case TLS1_3_VERSION:
3407 case TLS1_2_VERSION:
3410 case TLS1_1_VERSION:
3425 case DTLS1_2_VERSION:
3433 const char *SSL_get_version(const SSL *s)
3435 return ssl_protocol_to_string(s->version);
3438 SSL *SSL_dup(SSL *s)
3440 STACK_OF(X509_NAME) *sk;
3445 /* If we're not quiescent, just up_ref! */
3446 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3447 CRYPTO_UP_REF(&s->references, &i, s->lock);
3452 * Otherwise, copy configuration state, and session if set.
3454 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3457 if (s->session != NULL) {
3459 * Arranges to share the same session via up_ref. This "copies"
3460 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3462 if (!SSL_copy_session_id(ret, s))
3466 * No session has been established yet, so we have to expect that
3467 * s->cert or ret->cert will be changed later -- they should not both
3468 * point to the same object, and thus we can't use
3469 * SSL_copy_session_id.
3471 if (!SSL_set_ssl_method(ret, s->method))
3474 if (s->cert != NULL) {
3475 ssl_cert_free(ret->cert);
3476 ret->cert = ssl_cert_dup(s->cert);
3477 if (ret->cert == NULL)
3481 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3482 (int)s->sid_ctx_length))
3486 if (!ssl_dane_dup(ret, s))
3488 ret->version = s->version;
3489 ret->options = s->options;
3490 ret->mode = s->mode;
3491 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3492 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3493 ret->msg_callback = s->msg_callback;
3494 ret->msg_callback_arg = s->msg_callback_arg;
3495 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3496 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3497 ret->generate_session_id = s->generate_session_id;
3499 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3501 /* copy app data, a little dangerous perhaps */
3502 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3505 /* setup rbio, and wbio */
3506 if (s->rbio != NULL) {
3507 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3510 if (s->wbio != NULL) {
3511 if (s->wbio != s->rbio) {
3512 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3515 BIO_up_ref(ret->rbio);
3516 ret->wbio = ret->rbio;
3520 ret->server = s->server;
3521 if (s->handshake_func) {
3523 SSL_set_accept_state(ret);
3525 SSL_set_connect_state(ret);
3527 ret->shutdown = s->shutdown;
3530 ret->default_passwd_callback = s->default_passwd_callback;
3531 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3533 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3535 /* dup the cipher_list and cipher_list_by_id stacks */
3536 if (s->cipher_list != NULL) {
3537 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3540 if (s->cipher_list_by_id != NULL)
3541 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3545 /* Dup the client_CA list */
3546 if (s->ca_names != NULL) {
3547 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
3550 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3551 xn = sk_X509_NAME_value(sk, i);
3552 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3565 void ssl_clear_cipher_ctx(SSL *s)
3567 if (s->enc_read_ctx != NULL) {
3568 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3569 s->enc_read_ctx = NULL;
3571 if (s->enc_write_ctx != NULL) {
3572 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3573 s->enc_write_ctx = NULL;
3575 #ifndef OPENSSL_NO_COMP
3576 COMP_CTX_free(s->expand);
3578 COMP_CTX_free(s->compress);
3583 X509 *SSL_get_certificate(const SSL *s)
3585 if (s->cert != NULL)
3586 return (s->cert->key->x509);
3591 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3593 if (s->cert != NULL)
3594 return (s->cert->key->privatekey);
3599 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3601 if (ctx->cert != NULL)
3602 return ctx->cert->key->x509;
3607 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3609 if (ctx->cert != NULL)
3610 return ctx->cert->key->privatekey;
3615 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3617 if ((s->session != NULL) && (s->session->cipher != NULL))
3618 return (s->session->cipher);
3622 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3624 return s->s3->tmp.new_cipher;
3627 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3629 #ifndef OPENSSL_NO_COMP
3630 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3636 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3638 #ifndef OPENSSL_NO_COMP
3639 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3645 int ssl_init_wbio_buffer(SSL *s)
3649 if (s->bbio != NULL) {
3650 /* Already buffered. */
3654 bbio = BIO_new(BIO_f_buffer());
3655 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3657 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3661 s->wbio = BIO_push(bbio, s->wbio);
3666 int ssl_free_wbio_buffer(SSL *s)
3668 /* callers ensure s is never null */
3669 if (s->bbio == NULL)
3672 s->wbio = BIO_pop(s->wbio);
3673 if (!ossl_assert(s->wbio != NULL))
3681 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3683 ctx->quiet_shutdown = mode;
3686 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3688 return (ctx->quiet_shutdown);
3691 void SSL_set_quiet_shutdown(SSL *s, int mode)
3693 s->quiet_shutdown = mode;
3696 int SSL_get_quiet_shutdown(const SSL *s)
3698 return (s->quiet_shutdown);
3701 void SSL_set_shutdown(SSL *s, int mode)
3706 int SSL_get_shutdown(const SSL *s)
3711 int SSL_version(const SSL *s)
3716 int SSL_client_version(const SSL *s)
3718 return s->client_version;
3721 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3726 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3729 if (ssl->ctx == ctx)
3732 ctx = ssl->session_ctx;
3733 new_cert = ssl_cert_dup(ctx->cert);
3734 if (new_cert == NULL) {
3738 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3739 ssl_cert_free(new_cert);
3743 ssl_cert_free(ssl->cert);
3744 ssl->cert = new_cert;
3747 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3748 * so setter APIs must prevent invalid lengths from entering the system.
3750 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3754 * If the session ID context matches that of the parent SSL_CTX,
3755 * inherit it from the new SSL_CTX as well. If however the context does
3756 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3757 * leave it unchanged.
3759 if ((ssl->ctx != NULL) &&
3760 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3761 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3762 ssl->sid_ctx_length = ctx->sid_ctx_length;
3763 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3766 SSL_CTX_up_ref(ctx);
3767 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3773 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3775 return (X509_STORE_set_default_paths(ctx->cert_store));
3778 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3780 X509_LOOKUP *lookup;
3782 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3785 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3787 /* Clear any errors if the default directory does not exist */
3793 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3795 X509_LOOKUP *lookup;
3797 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3801 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3803 /* Clear any errors if the default file does not exist */
3809 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3812 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3815 void SSL_set_info_callback(SSL *ssl,
3816 void (*cb) (const SSL *ssl, int type, int val))
3818 ssl->info_callback = cb;
3822 * One compiler (Diab DCC) doesn't like argument names in returned function
3825 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3828 return ssl->info_callback;
3831 void SSL_set_verify_result(SSL *ssl, long arg)
3833 ssl->verify_result = arg;
3836 long SSL_get_verify_result(const SSL *ssl)
3838 return (ssl->verify_result);
3841 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3844 return sizeof(ssl->s3->client_random);
3845 if (outlen > sizeof(ssl->s3->client_random))
3846 outlen = sizeof(ssl->s3->client_random);
3847 memcpy(out, ssl->s3->client_random, outlen);
3851 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3854 return sizeof(ssl->s3->server_random);
3855 if (outlen > sizeof(ssl->s3->server_random))
3856 outlen = sizeof(ssl->s3->server_random);
3857 memcpy(out, ssl->s3->server_random, outlen);
3861 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3862 unsigned char *out, size_t outlen)
3865 return session->master_key_length;
3866 if (outlen > session->master_key_length)
3867 outlen = session->master_key_length;
3868 memcpy(out, session->master_key, outlen);
3872 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
3875 if (len > sizeof(sess->master_key))
3878 memcpy(sess->master_key, in, len);
3879 sess->master_key_length = len;
3884 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3886 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3889 void *SSL_get_ex_data(const SSL *s, int idx)
3891 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3894 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3896 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3899 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3901 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3904 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3906 return (ctx->cert_store);
3909 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3911 X509_STORE_free(ctx->cert_store);
3912 ctx->cert_store = store;
3915 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3918 X509_STORE_up_ref(store);
3919 SSL_CTX_set_cert_store(ctx, store);
3922 int SSL_want(const SSL *s)
3924 return (s->rwstate);
3928 * \brief Set the callback for generating temporary DH keys.
3929 * \param ctx the SSL context.
3930 * \param dh the callback
3933 #ifndef OPENSSL_NO_DH
3934 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3935 DH *(*dh) (SSL *ssl, int is_export,
3938 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3941 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3944 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3948 #ifndef OPENSSL_NO_PSK
3949 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3951 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3952 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3955 OPENSSL_free(ctx->cert->psk_identity_hint);
3956 if (identity_hint != NULL) {
3957 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3958 if (ctx->cert->psk_identity_hint == NULL)
3961 ctx->cert->psk_identity_hint = NULL;
3965 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3970 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3971 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3974 OPENSSL_free(s->cert->psk_identity_hint);
3975 if (identity_hint != NULL) {
3976 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3977 if (s->cert->psk_identity_hint == NULL)
3980 s->cert->psk_identity_hint = NULL;
3984 const char *SSL_get_psk_identity_hint(const SSL *s)
3986 if (s == NULL || s->session == NULL)
3988 return (s->session->psk_identity_hint);
3991 const char *SSL_get_psk_identity(const SSL *s)
3993 if (s == NULL || s->session == NULL)
3995 return (s->session->psk_identity);
3998 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4000 s->psk_client_callback = cb;
4003 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4005 ctx->psk_client_callback = cb;
4008 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4010 s->psk_server_callback = cb;
4013 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4015 ctx->psk_server_callback = cb;
4019 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4021 s->psk_find_session_cb = cb;
4024 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4025 SSL_psk_find_session_cb_func cb)
4027 ctx->psk_find_session_cb = cb;
4030 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4032 s->psk_use_session_cb = cb;
4035 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4036 SSL_psk_use_session_cb_func cb)
4038 ctx->psk_use_session_cb = cb;
4041 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4042 void (*cb) (int write_p, int version,
4043 int content_type, const void *buf,
4044 size_t len, SSL *ssl, void *arg))
4046 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4049 void SSL_set_msg_callback(SSL *ssl,
4050 void (*cb) (int write_p, int version,
4051 int content_type, const void *buf,
4052 size_t len, SSL *ssl, void *arg))
4054 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4057 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4058 int (*cb) (SSL *ssl,
4062 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4063 (void (*)(void))cb);
4066 void SSL_set_not_resumable_session_callback(SSL *ssl,
4067 int (*cb) (SSL *ssl,
4068 int is_forward_secure))
4070 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4071 (void (*)(void))cb);
4074 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4075 size_t (*cb) (SSL *ssl, int type,
4076 size_t len, void *arg))
4078 ctx->record_padding_cb = cb;
4081 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4083 ctx->record_padding_arg = arg;
4086 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4088 return ctx->record_padding_arg;
4091 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4093 /* block size of 0 or 1 is basically no padding */
4094 if (block_size == 1)
4095 ctx->block_padding = 0;
4096 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4097 ctx->block_padding = block_size;
4103 void SSL_set_record_padding_callback(SSL *ssl,
4104 size_t (*cb) (SSL *ssl, int type,
4105 size_t len, void *arg))
4107 ssl->record_padding_cb = cb;
4110 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4112 ssl->record_padding_arg = arg;
4115 void *SSL_get_record_padding_callback_arg(SSL *ssl)
4117 return ssl->record_padding_arg;
4120 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4122 /* block size of 0 or 1 is basically no padding */
4123 if (block_size == 1)
4124 ssl->block_padding = 0;
4125 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4126 ssl->block_padding = block_size;
4133 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4134 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4135 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4136 * Returns the newly allocated ctx;
4139 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4141 ssl_clear_hash_ctx(hash);
4142 *hash = EVP_MD_CTX_new();
4143 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4144 EVP_MD_CTX_free(*hash);
4151 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4154 EVP_MD_CTX_free(*hash);
4158 /* Retrieve handshake hashes */
4159 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4162 EVP_MD_CTX *ctx = NULL;
4163 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4164 int hashleni = EVP_MD_CTX_size(hdgst);
4167 if (hashleni < 0 || (size_t)hashleni > outlen)
4170 ctx = EVP_MD_CTX_new();
4174 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4175 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
4178 *hashlen = hashleni;
4182 EVP_MD_CTX_free(ctx);
4186 int SSL_session_reused(SSL *s)
4191 int SSL_is_server(const SSL *s)
4196 #if OPENSSL_API_COMPAT < 0x10100000L
4197 void SSL_set_debug(SSL *s, int debug)
4199 /* Old function was do-nothing anyway... */
4205 void SSL_set_security_level(SSL *s, int level)
4207 s->cert->sec_level = level;
4210 int SSL_get_security_level(const SSL *s)
4212 return s->cert->sec_level;
4215 void SSL_set_security_callback(SSL *s,
4216 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4217 int op, int bits, int nid,
4218 void *other, void *ex))
4220 s->cert->sec_cb = cb;
4223 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4224 const SSL_CTX *ctx, int op,
4225 int bits, int nid, void *other,
4227 return s->cert->sec_cb;
4230 void SSL_set0_security_ex_data(SSL *s, void *ex)
4232 s->cert->sec_ex = ex;
4235 void *SSL_get0_security_ex_data(const SSL *s)
4237 return s->cert->sec_ex;
4240 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4242 ctx->cert->sec_level = level;
4245 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4247 return ctx->cert->sec_level;
4250 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4251 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4252 int op, int bits, int nid,
4253 void *other, void *ex))
4255 ctx->cert->sec_cb = cb;
4258 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4264 return ctx->cert->sec_cb;
4267 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4269 ctx->cert->sec_ex = ex;
4272 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4274 return ctx->cert->sec_ex;
4278 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4279 * can return unsigned long, instead of the generic long return value from the
4280 * control interface.
4282 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4284 return ctx->options;
4287 unsigned long SSL_get_options(const SSL *s)
4292 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4294 return ctx->options |= op;
4297 unsigned long SSL_set_options(SSL *s, unsigned long op)
4299 return s->options |= op;
4302 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4304 return ctx->options &= ~op;
4307 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4309 return s->options &= ~op;
4312 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4314 return s->verified_chain;
4317 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4319 #ifndef OPENSSL_NO_CT
4322 * Moves SCTs from the |src| stack to the |dst| stack.
4323 * The source of each SCT will be set to |origin|.
4324 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4326 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4328 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4329 sct_source_t origin)
4335 *dst = sk_SCT_new_null();
4337 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4342 while ((sct = sk_SCT_pop(src)) != NULL) {
4343 if (SCT_set_source(sct, origin) != 1)
4346 if (sk_SCT_push(*dst, sct) <= 0)
4354 sk_SCT_push(src, sct); /* Put the SCT back */
4359 * Look for data collected during ServerHello and parse if found.
4360 * Returns the number of SCTs extracted.
4362 static int ct_extract_tls_extension_scts(SSL *s)
4364 int scts_extracted = 0;
4366 if (s->ext.scts != NULL) {
4367 const unsigned char *p = s->ext.scts;
4368 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4370 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4372 SCT_LIST_free(scts);
4375 return scts_extracted;
4379 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4380 * contains an SCT X509 extension. They will be stored in |s->scts|.
4382 * - The number of SCTs extracted, assuming an OCSP response exists.
4383 * - 0 if no OCSP response exists or it contains no SCTs.
4384 * - A negative integer if an error occurs.
4386 static int ct_extract_ocsp_response_scts(SSL *s)
4388 # ifndef OPENSSL_NO_OCSP
4389 int scts_extracted = 0;
4390 const unsigned char *p;
4391 OCSP_BASICRESP *br = NULL;
4392 OCSP_RESPONSE *rsp = NULL;
4393 STACK_OF(SCT) *scts = NULL;
4396 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4399 p = s->ext.ocsp.resp;
4400 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4404 br = OCSP_response_get1_basic(rsp);
4408 for (i = 0; i < OCSP_resp_count(br); ++i) {
4409 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4415 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4417 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4418 if (scts_extracted < 0)
4422 SCT_LIST_free(scts);
4423 OCSP_BASICRESP_free(br);
4424 OCSP_RESPONSE_free(rsp);
4425 return scts_extracted;
4427 /* Behave as if no OCSP response exists */
4433 * Attempts to extract SCTs from the peer certificate.
4434 * Return the number of SCTs extracted, or a negative integer if an error
4437 static int ct_extract_x509v3_extension_scts(SSL *s)
4439 int scts_extracted = 0;
4440 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4443 STACK_OF(SCT) *scts =
4444 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4447 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4449 SCT_LIST_free(scts);
4452 return scts_extracted;
4456 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4457 * response (if it exists) and X509v3 extensions in the certificate.
4458 * Returns NULL if an error occurs.
4460 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4462 if (!s->scts_parsed) {
4463 if (ct_extract_tls_extension_scts(s) < 0 ||
4464 ct_extract_ocsp_response_scts(s) < 0 ||
4465 ct_extract_x509v3_extension_scts(s) < 0)
4475 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4476 const STACK_OF(SCT) *scts, void *unused_arg)
4481 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4482 const STACK_OF(SCT) *scts, void *unused_arg)
4484 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4487 for (i = 0; i < count; ++i) {
4488 SCT *sct = sk_SCT_value(scts, i);
4489 int status = SCT_get_validation_status(sct);
4491 if (status == SCT_VALIDATION_STATUS_VALID)
4494 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4498 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4502 * Since code exists that uses the custom extension handler for CT, look
4503 * for this and throw an error if they have already registered to use CT.
4505 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4506 TLSEXT_TYPE_signed_certificate_timestamp))
4508 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4509 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4513 if (callback != NULL) {
4515 * If we are validating CT, then we MUST accept SCTs served via OCSP
4517 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4521 s->ct_validation_callback = callback;
4522 s->ct_validation_callback_arg = arg;
4527 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4528 ssl_ct_validation_cb callback, void *arg)
4531 * Since code exists that uses the custom extension handler for CT, look for
4532 * this and throw an error if they have already registered to use CT.
4534 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4535 TLSEXT_TYPE_signed_certificate_timestamp))
4537 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4538 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4542 ctx->ct_validation_callback = callback;
4543 ctx->ct_validation_callback_arg = arg;
4547 int SSL_ct_is_enabled(const SSL *s)
4549 return s->ct_validation_callback != NULL;
4552 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4554 return ctx->ct_validation_callback != NULL;
4557 int ssl_validate_ct(SSL *s)
4560 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4562 SSL_DANE *dane = &s->dane;
4563 CT_POLICY_EVAL_CTX *ctx = NULL;
4564 const STACK_OF(SCT) *scts;
4567 * If no callback is set, the peer is anonymous, or its chain is invalid,
4568 * skip SCT validation - just return success. Applications that continue
4569 * handshakes without certificates, with unverified chains, or pinned leaf
4570 * certificates are outside the scope of the WebPKI and CT.
4572 * The above exclusions notwithstanding the vast majority of peers will
4573 * have rather ordinary certificate chains validated by typical
4574 * applications that perform certificate verification and therefore will
4575 * process SCTs when enabled.
4577 if (s->ct_validation_callback == NULL || cert == NULL ||
4578 s->verify_result != X509_V_OK ||
4579 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4583 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4584 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4586 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4587 switch (dane->mtlsa->usage) {
4588 case DANETLS_USAGE_DANE_TA:
4589 case DANETLS_USAGE_DANE_EE:
4594 ctx = CT_POLICY_EVAL_CTX_new();
4596 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4600 issuer = sk_X509_value(s->verified_chain, 1);
4601 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4602 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4603 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4604 CT_POLICY_EVAL_CTX_set_time(
4605 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4607 scts = SSL_get0_peer_scts(s);
4610 * This function returns success (> 0) only when all the SCTs are valid, 0
4611 * when some are invalid, and < 0 on various internal errors (out of
4612 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4613 * reason to abort the handshake, that decision is up to the callback.
4614 * Therefore, we error out only in the unexpected case that the return
4615 * value is negative.
4617 * XXX: One might well argue that the return value of this function is an
4618 * unfortunate design choice. Its job is only to determine the validation
4619 * status of each of the provided SCTs. So long as it correctly separates
4620 * the wheat from the chaff it should return success. Failure in this case
4621 * ought to correspond to an inability to carry out its duties.
4623 if (SCT_LIST_validate(scts, ctx) < 0) {
4624 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4628 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4630 ret = 0; /* This function returns 0 on failure */
4633 CT_POLICY_EVAL_CTX_free(ctx);
4635 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4636 * failure return code here. Also the application may wish the complete
4637 * the handshake, and then disconnect cleanly at a higher layer, after
4638 * checking the verification status of the completed connection.
4640 * We therefore force a certificate verification failure which will be
4641 * visible via SSL_get_verify_result() and cached as part of any resumed
4644 * Note: the permissive callback is for information gathering only, always
4645 * returns success, and does not affect verification status. Only the
4646 * strict callback or a custom application-specified callback can trigger
4647 * connection failure or record a verification error.
4650 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4654 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4656 switch (validation_mode) {
4658 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4660 case SSL_CT_VALIDATION_PERMISSIVE:
4661 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4662 case SSL_CT_VALIDATION_STRICT:
4663 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4667 int SSL_enable_ct(SSL *s, int validation_mode)
4669 switch (validation_mode) {
4671 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4673 case SSL_CT_VALIDATION_PERMISSIVE:
4674 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4675 case SSL_CT_VALIDATION_STRICT:
4676 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4680 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4682 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4685 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4687 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4690 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4692 CTLOG_STORE_free(ctx->ctlog_store);
4693 ctx->ctlog_store = logs;
4696 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4698 return ctx->ctlog_store;
4701 #endif /* OPENSSL_NO_CT */
4703 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4706 c->client_hello_cb = cb;
4707 c->client_hello_cb_arg = arg;
4710 int SSL_client_hello_isv2(SSL *s)
4712 if (s->clienthello == NULL)
4714 return s->clienthello->isv2;
4717 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
4719 if (s->clienthello == NULL)
4721 return s->clienthello->legacy_version;
4724 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
4726 if (s->clienthello == NULL)
4729 *out = s->clienthello->random;
4730 return SSL3_RANDOM_SIZE;
4733 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
4735 if (s->clienthello == NULL)
4738 *out = s->clienthello->session_id;
4739 return s->clienthello->session_id_len;
4742 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
4744 if (s->clienthello == NULL)
4747 *out = PACKET_data(&s->clienthello->ciphersuites);
4748 return PACKET_remaining(&s->clienthello->ciphersuites);
4751 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
4753 if (s->clienthello == NULL)
4756 *out = s->clienthello->compressions;
4757 return s->clienthello->compressions_len;
4760 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
4766 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4768 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4769 ext = s->clienthello->pre_proc_exts + i;
4773 present = OPENSSL_malloc(sizeof(*present) * num);
4774 if (present == NULL)
4776 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4777 ext = s->clienthello->pre_proc_exts + i;
4779 if (ext->received_order >= num)
4781 present[ext->received_order] = ext->type;
4788 OPENSSL_free(present);
4792 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
4798 if (s->clienthello == NULL)
4800 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4801 r = s->clienthello->pre_proc_exts + i;
4802 if (r->present && r->type == type) {
4804 *out = PACKET_data(&r->data);
4806 *outlen = PACKET_remaining(&r->data);
4813 int SSL_free_buffers(SSL *ssl)
4815 RECORD_LAYER *rl = &ssl->rlayer;
4817 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4820 RECORD_LAYER_release(rl);
4824 int SSL_alloc_buffers(SSL *ssl)
4826 return ssl3_setup_buffers(ssl);
4829 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4831 ctx->keylog_callback = cb;
4834 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4836 return ctx->keylog_callback;
4839 static int nss_keylog_int(const char *prefix,
4841 const uint8_t *parameter_1,
4842 size_t parameter_1_len,
4843 const uint8_t *parameter_2,
4844 size_t parameter_2_len)
4847 char *cursor = NULL;
4852 if (ssl->ctx->keylog_callback == NULL) return 1;
4855 * Our output buffer will contain the following strings, rendered with
4856 * space characters in between, terminated by a NULL character: first the
4857 * prefix, then the first parameter, then the second parameter. The
4858 * meaning of each parameter depends on the specific key material being
4859 * logged. Note that the first and second parameters are encoded in
4860 * hexadecimal, so we need a buffer that is twice their lengths.
4862 prefix_len = strlen(prefix);
4863 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4864 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4865 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4869 strcpy(cursor, prefix);
4870 cursor += prefix_len;
4873 for (i = 0; i < parameter_1_len; i++) {
4874 sprintf(cursor, "%02x", parameter_1[i]);
4879 for (i = 0; i < parameter_2_len; i++) {
4880 sprintf(cursor, "%02x", parameter_2[i]);
4885 ssl->ctx->keylog_callback(ssl, (const char *)out);
4891 int ssl_log_rsa_client_key_exchange(SSL *ssl,
4892 const uint8_t *encrypted_premaster,
4893 size_t encrypted_premaster_len,
4894 const uint8_t *premaster,
4895 size_t premaster_len)
4897 if (encrypted_premaster_len < 8) {
4898 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4902 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4903 return nss_keylog_int("RSA",
4905 encrypted_premaster,
4911 int ssl_log_secret(SSL *ssl,
4913 const uint8_t *secret,
4916 return nss_keylog_int(label,
4918 ssl->s3->client_random,
4924 #define SSLV2_CIPHER_LEN 3
4926 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4931 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4933 if (PACKET_remaining(cipher_suites) == 0) {
4934 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
4935 *al = SSL_AD_ILLEGAL_PARAMETER;
4939 if (PACKET_remaining(cipher_suites) % n != 0) {
4940 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
4941 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4942 *al = SSL_AD_DECODE_ERROR;
4946 OPENSSL_free(s->s3->tmp.ciphers_raw);
4947 s->s3->tmp.ciphers_raw = NULL;
4948 s->s3->tmp.ciphers_rawlen = 0;
4951 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4952 PACKET sslv2ciphers = *cipher_suites;
4953 unsigned int leadbyte;
4957 * We store the raw ciphers list in SSLv3+ format so we need to do some
4958 * preprocessing to convert the list first. If there are any SSLv2 only
4959 * ciphersuites with a non-zero leading byte then we are going to
4960 * slightly over allocate because we won't store those. But that isn't a
4963 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4964 s->s3->tmp.ciphers_raw = raw;
4966 *al = SSL_AD_INTERNAL_ERROR;
4969 for (s->s3->tmp.ciphers_rawlen = 0;
4970 PACKET_remaining(&sslv2ciphers) > 0;
4971 raw += TLS_CIPHER_LEN) {
4972 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4974 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4977 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
4978 *al = SSL_AD_DECODE_ERROR;
4979 OPENSSL_free(s->s3->tmp.ciphers_raw);
4980 s->s3->tmp.ciphers_raw = NULL;
4981 s->s3->tmp.ciphers_rawlen = 0;
4985 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
4987 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
4988 &s->s3->tmp.ciphers_rawlen)) {
4989 *al = SSL_AD_INTERNAL_ERROR;
4997 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
4998 int isv2format, STACK_OF(SSL_CIPHER) **sk,
4999 STACK_OF(SSL_CIPHER) **scsvs)
5004 if (!PACKET_buf_init(&pkt, bytes, len))
5006 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5009 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5010 STACK_OF(SSL_CIPHER) **skp,
5011 STACK_OF(SSL_CIPHER) **scsvs_out,
5012 int sslv2format, int *al)
5014 const SSL_CIPHER *c;
5015 STACK_OF(SSL_CIPHER) *sk = NULL;
5016 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5018 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5019 unsigned char cipher[SSLV2_CIPHER_LEN];
5021 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5023 if (PACKET_remaining(cipher_suites) == 0) {
5024 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5025 *al = SSL_AD_ILLEGAL_PARAMETER;
5029 if (PACKET_remaining(cipher_suites) % n != 0) {
5030 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5031 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5032 *al = SSL_AD_DECODE_ERROR;
5036 sk = sk_SSL_CIPHER_new_null();
5037 scsvs = sk_SSL_CIPHER_new_null();
5038 if (sk == NULL || scsvs == NULL) {
5039 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5040 *al = SSL_AD_INTERNAL_ERROR;
5044 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5046 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5047 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5048 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5050 if (sslv2format && cipher[0] != '\0')
5053 /* For SSLv2-compat, ignore leading 0-byte. */
5054 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5056 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5057 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5058 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5059 *al = SSL_AD_INTERNAL_ERROR;
5064 if (PACKET_remaining(cipher_suites) > 0) {
5065 *al = SSL_AD_DECODE_ERROR;
5066 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5073 sk_SSL_CIPHER_free(sk);
5074 if (scsvs_out != NULL)
5077 sk_SSL_CIPHER_free(scsvs);
5080 sk_SSL_CIPHER_free(sk);
5081 sk_SSL_CIPHER_free(scsvs);
5085 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5087 ctx->max_early_data = max_early_data;
5092 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5094 return ctx->max_early_data;
5097 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5099 s->max_early_data = max_early_data;
5104 uint32_t SSL_get_max_early_data(const SSL *s)
5106 return s->max_early_data;
5109 int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5111 if (s->drbg != NULL)
5112 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5113 return RAND_bytes(rnd, (int)size);