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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- /* ====================================================================
- * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com). */
- /* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * ECC cipher suite support in OpenSSL originally developed by
- * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
-
- #include <openssl/ssl.h>
-
- #include <assert.h>
-
- #include <utility>
-
- #include <openssl/rand.h>
-
- #include "../crypto/internal.h"
- #include "internal.h"
-
-
- namespace bssl {
-
- SSL_HANDSHAKE::SSL_HANDSHAKE(SSL *ssl_arg)
- : ssl(ssl_arg),
- scts_requested(false),
- needs_psk_binder(false),
- received_hello_retry_request(false),
- sent_hello_retry_request(false),
- received_custom_extension(false),
- handshake_finalized(false),
- accept_psk_mode(false),
- cert_request(false),
- certificate_status_expected(false),
- ocsp_stapling_requested(false),
- should_ack_sni(false),
- in_false_start(false),
- in_early_data(false),
- early_data_offered(false),
- can_early_read(false),
- can_early_write(false),
- next_proto_neg_seen(false),
- ticket_expected(false),
- extended_master_secret(false),
- pending_private_key_op(false),
- grease_seeded(false) {
- }
-
- SSL_HANDSHAKE::~SSL_HANDSHAKE() {
- ssl->ctx->x509_method->hs_flush_cached_ca_names(this);
- }
-
- UniquePtr<SSL_HANDSHAKE> ssl_handshake_new(SSL *ssl) {
- UniquePtr<SSL_HANDSHAKE> hs = MakeUnique<SSL_HANDSHAKE>(ssl);
- if (!hs ||
- !hs->transcript.Init()) {
- return nullptr;
- }
- return hs;
- }
-
- bool ssl_check_message_type(SSL *ssl, const SSLMessage &msg, int type) {
- if (msg.type != type) {
- ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
- ERR_add_error_dataf("got type %d, wanted type %d", msg.type, type);
- return false;
- }
-
- return true;
- }
-
- bool ssl_add_message_cbb(SSL *ssl, CBB *cbb) {
- Array<uint8_t> msg;
- if (!ssl->method->finish_message(ssl, cbb, &msg) ||
- !ssl->method->add_message(ssl, std::move(msg))) {
- return false;
- }
-
- return true;
- }
-
- size_t ssl_max_handshake_message_len(const SSL *ssl) {
- // kMaxMessageLen is the default maximum message size for handshakes which do
- // not accept peer certificate chains.
- static const size_t kMaxMessageLen = 16384;
-
- if (SSL_in_init(ssl)) {
- if ((!ssl->server || (ssl->verify_mode & SSL_VERIFY_PEER)) &&
- kMaxMessageLen < ssl->max_cert_list) {
- return ssl->max_cert_list;
- }
- return kMaxMessageLen;
- }
-
- if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
- // In TLS 1.2 and below, the largest acceptable post-handshake message is
- // a HelloRequest.
- return 0;
- }
-
- if (ssl->server) {
- // The largest acceptable post-handshake message for a server is a
- // KeyUpdate. We will never initiate post-handshake auth.
- return 1;
- }
-
- // Clients must accept NewSessionTicket, so allow the default size.
- return kMaxMessageLen;
- }
-
- bool ssl_hash_message(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
- // V2ClientHello messages are pre-hashed.
- if (msg.is_v2_hello) {
- return true;
- }
-
- return hs->transcript.Update(msg.raw);
- }
-
- int ssl_parse_extensions(const CBS *cbs, uint8_t *out_alert,
- const SSL_EXTENSION_TYPE *ext_types,
- size_t num_ext_types, int ignore_unknown) {
- // Reset everything.
- for (size_t i = 0; i < num_ext_types; i++) {
- *ext_types[i].out_present = 0;
- CBS_init(ext_types[i].out_data, NULL, 0);
- }
-
- CBS copy = *cbs;
- while (CBS_len(©) != 0) {
- uint16_t type;
- CBS data;
- if (!CBS_get_u16(©, &type) ||
- !CBS_get_u16_length_prefixed(©, &data)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
- *out_alert = SSL_AD_DECODE_ERROR;
- return 0;
- }
-
- const SSL_EXTENSION_TYPE *ext_type = NULL;
- for (size_t i = 0; i < num_ext_types; i++) {
- if (type == ext_types[i].type) {
- ext_type = &ext_types[i];
- break;
- }
- }
-
- if (ext_type == NULL) {
- if (ignore_unknown) {
- continue;
- }
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
- *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
- return 0;
- }
-
- // Duplicate ext_types are forbidden.
- if (*ext_type->out_present) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_EXTENSION);
- *out_alert = SSL_AD_ILLEGAL_PARAMETER;
- return 0;
- }
-
- *ext_type->out_present = 1;
- *ext_type->out_data = data;
- }
-
- return 1;
- }
-
- static void set_crypto_buffer(CRYPTO_BUFFER **dest, CRYPTO_BUFFER *src) {
- // TODO(davidben): Remove this helper once |SSL_SESSION| can use |UniquePtr|
- // and |UniquePtr| has up_ref helpers.
- CRYPTO_BUFFER_free(*dest);
- *dest = src;
- if (src != nullptr) {
- CRYPTO_BUFFER_up_ref(src);
- }
- }
-
- enum ssl_verify_result_t ssl_verify_peer_cert(SSL_HANDSHAKE *hs) {
- SSL *const ssl = hs->ssl;
- const SSL_SESSION *prev_session = ssl->s3->established_session.get();
- if (prev_session != NULL) {
- // If renegotiating, the server must not change the server certificate. See
- // https://mitls.org/pages/attacks/3SHAKE. We never resume on renegotiation,
- // so this check is sufficient to ensure the reported peer certificate never
- // changes on renegotiation.
- assert(!ssl->server);
- if (sk_CRYPTO_BUFFER_num(prev_session->certs) !=
- sk_CRYPTO_BUFFER_num(hs->new_session->certs)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_CERT_CHANGED);
- ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
- return ssl_verify_invalid;
- }
-
- for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(hs->new_session->certs); i++) {
- const CRYPTO_BUFFER *old_cert =
- sk_CRYPTO_BUFFER_value(prev_session->certs, i);
- const CRYPTO_BUFFER *new_cert =
- sk_CRYPTO_BUFFER_value(hs->new_session->certs, i);
- if (CRYPTO_BUFFER_len(old_cert) != CRYPTO_BUFFER_len(new_cert) ||
- OPENSSL_memcmp(CRYPTO_BUFFER_data(old_cert),
- CRYPTO_BUFFER_data(new_cert),
- CRYPTO_BUFFER_len(old_cert)) != 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_CERT_CHANGED);
- ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
- return ssl_verify_invalid;
- }
- }
-
- // The certificate is identical, so we may skip re-verifying the
- // certificate. Since we only authenticated the previous one, copy other
- // authentication from the established session and ignore what was newly
- // received.
- set_crypto_buffer(&hs->new_session->ocsp_response,
- prev_session->ocsp_response);
- set_crypto_buffer(&hs->new_session->signed_cert_timestamp_list,
- prev_session->signed_cert_timestamp_list);
- hs->new_session->verify_result = prev_session->verify_result;
- return ssl_verify_ok;
- }
-
- uint8_t alert = SSL_AD_CERTIFICATE_UNKNOWN;
- enum ssl_verify_result_t ret;
- if (ssl->custom_verify_callback != nullptr) {
- ret = ssl->custom_verify_callback(ssl, &alert);
- switch (ret) {
- case ssl_verify_ok:
- hs->new_session->verify_result = X509_V_OK;
- break;
- case ssl_verify_invalid:
- // If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result.
- if (ssl->verify_mode == SSL_VERIFY_NONE) {
- ERR_clear_error();
- ret = ssl_verify_ok;
- }
- hs->new_session->verify_result = X509_V_ERR_APPLICATION_VERIFICATION;
- break;
- case ssl_verify_retry:
- break;
- }
- } else {
- ret = ssl->ctx->x509_method->session_verify_cert_chain(
- hs->new_session.get(), ssl, &alert)
- ? ssl_verify_ok
- : ssl_verify_invalid;
- }
-
- if (ret == ssl_verify_invalid) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED);
- ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
- }
-
- return ret;
- }
-
- uint16_t ssl_get_grease_value(SSL_HANDSHAKE *hs,
- enum ssl_grease_index_t index) {
- // Draw entropy for all GREASE values at once. This avoids calling
- // |RAND_bytes| repeatedly and makes the values consistent within a
- // connection. The latter is so the second ClientHello matches after
- // HelloRetryRequest and so supported_groups and key_shares are consistent.
- if (!hs->grease_seeded) {
- RAND_bytes(hs->grease_seed, sizeof(hs->grease_seed));
- hs->grease_seeded = true;
- }
-
- // This generates a random value of the form 0xωaωa, for all 0 ≤ ω < 16.
- uint16_t ret = hs->grease_seed[index];
- ret = (ret & 0xf0) | 0x0a;
- ret |= ret << 8;
- return ret;
- }
-
- enum ssl_hs_wait_t ssl_get_finished(SSL_HANDSHAKE *hs) {
- SSL *const ssl = hs->ssl;
- SSLMessage msg;
- if (!ssl->method->get_message(ssl, &msg)) {
- return ssl_hs_read_message;
- }
-
- if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED)) {
- return ssl_hs_error;
- }
-
- // Snapshot the finished hash before incorporating the new message.
- uint8_t finished[EVP_MAX_MD_SIZE];
- size_t finished_len;
- if (!hs->transcript.GetFinishedMAC(finished, &finished_len,
- SSL_get_session(ssl), !ssl->server) ||
- !ssl_hash_message(hs, msg)) {
- return ssl_hs_error;
- }
-
- int finished_ok = CBS_mem_equal(&msg.body, finished, finished_len);
- #if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
- finished_ok = 1;
- #endif
- if (!finished_ok) {
- ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
- OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
- return ssl_hs_error;
- }
-
- // Copy the Finished so we can use it for renegotiation checks.
- if (ssl->version != SSL3_VERSION) {
- if (finished_len > sizeof(ssl->s3->previous_client_finished) ||
- finished_len > sizeof(ssl->s3->previous_server_finished)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return ssl_hs_error;
- }
-
- if (ssl->server) {
- OPENSSL_memcpy(ssl->s3->previous_client_finished, finished, finished_len);
- ssl->s3->previous_client_finished_len = finished_len;
- } else {
- OPENSSL_memcpy(ssl->s3->previous_server_finished, finished, finished_len);
- ssl->s3->previous_server_finished_len = finished_len;
- }
- }
-
- ssl->method->next_message(ssl);
- return ssl_hs_ok;
- }
-
- bool ssl_send_finished(SSL_HANDSHAKE *hs) {
- SSL *const ssl = hs->ssl;
- const SSL_SESSION *session = SSL_get_session(ssl);
-
- uint8_t finished[EVP_MAX_MD_SIZE];
- size_t finished_len;
- if (!hs->transcript.GetFinishedMAC(finished, &finished_len, session,
- ssl->server)) {
- return 0;
- }
-
- // Log the master secret, if logging is enabled.
- if (!ssl_log_secret(ssl, "CLIENT_RANDOM",
- session->master_key,
- session->master_key_length)) {
- return 0;
- }
-
- // Copy the Finished so we can use it for renegotiation checks.
- if (ssl->version != SSL3_VERSION) {
- if (finished_len > sizeof(ssl->s3->previous_client_finished) ||
- finished_len > sizeof(ssl->s3->previous_server_finished)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- if (ssl->server) {
- OPENSSL_memcpy(ssl->s3->previous_server_finished, finished, finished_len);
- ssl->s3->previous_server_finished_len = finished_len;
- } else {
- OPENSSL_memcpy(ssl->s3->previous_client_finished, finished, finished_len);
- ssl->s3->previous_client_finished_len = finished_len;
- }
- }
-
- ScopedCBB cbb;
- CBB body;
- if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_FINISHED) ||
- !CBB_add_bytes(&body, finished, finished_len) ||
- !ssl_add_message_cbb(ssl, cbb.get())) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- return 1;
- }
-
- bool ssl_output_cert_chain(SSL *ssl) {
- ScopedCBB cbb;
- CBB body;
- if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CERTIFICATE) ||
- !ssl_add_cert_chain(ssl, &body) ||
- !ssl_add_message_cbb(ssl, cbb.get())) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return false;
- }
-
- return true;
- }
-
- int ssl_run_handshake(SSL_HANDSHAKE *hs, bool *out_early_return) {
- SSL *const ssl = hs->ssl;
- for (;;) {
- // Resolve the operation the handshake was waiting on.
- switch (hs->wait) {
- case ssl_hs_error:
- ERR_restore_state(hs->error.get());
- return -1;
-
- case ssl_hs_flush: {
- int ret = ssl->method->flush_flight(ssl);
- if (ret <= 0) {
- return ret;
- }
- break;
- }
-
- case ssl_hs_read_server_hello:
- case ssl_hs_read_message:
- case ssl_hs_read_change_cipher_spec: {
- uint8_t alert = SSL_AD_DECODE_ERROR;
- size_t consumed = 0;
- ssl_open_record_t ret;
- if (hs->wait == ssl_hs_read_change_cipher_spec) {
- ret = ssl_open_change_cipher_spec(ssl, &consumed, &alert,
- ssl->s3->read_buffer.span());
- } else {
- ret = ssl_open_handshake(ssl, &consumed, &alert,
- ssl->s3->read_buffer.span());
- }
- if (ret == ssl_open_record_error &&
- hs->wait == ssl_hs_read_server_hello) {
- uint32_t err = ERR_peek_error();
- if (ERR_GET_LIB(err) == ERR_LIB_SSL &&
- ERR_GET_REASON(err) == SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE) {
- // Add a dedicated error code to the queue for a handshake_failure
- // alert in response to ClientHello. This matches NSS's client
- // behavior and gives a better error on a (probable) failure to
- // negotiate initial parameters. Note: this error code comes after
- // the original one.
- //
- // See https://crbug.com/446505.
- OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_FAILURE_ON_CLIENT_HELLO);
- }
- }
- bool retry;
- int bio_ret = ssl_handle_open_record(ssl, &retry, ret, consumed, alert);
- if (bio_ret <= 0) {
- return bio_ret;
- }
- if (retry) {
- continue;
- }
- ssl->s3->read_buffer.DiscardConsumed();
- break;
- }
-
- case ssl_hs_read_end_of_early_data: {
- if (ssl->s3->hs->can_early_read) {
- // While we are processing early data, the handshake returns early.
- *out_early_return = true;
- return 1;
- }
- hs->wait = ssl_hs_ok;
- break;
- }
-
- case ssl_hs_certificate_selection_pending:
- ssl->s3->rwstate = SSL_CERTIFICATE_SELECTION_PENDING;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_handoff:
- ssl->s3->rwstate = SSL_HANDOFF;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_handback:
- ssl->s3->rwstate = SSL_HANDBACK;
- hs->wait = ssl_hs_handback;
- return -1;
-
- case ssl_hs_x509_lookup:
- ssl->s3->rwstate = SSL_X509_LOOKUP;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_channel_id_lookup:
- ssl->s3->rwstate = SSL_CHANNEL_ID_LOOKUP;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_private_key_operation:
- ssl->s3->rwstate = SSL_PRIVATE_KEY_OPERATION;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_pending_session:
- ssl->s3->rwstate = SSL_PENDING_SESSION;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_pending_ticket:
- ssl->s3->rwstate = SSL_PENDING_TICKET;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_certificate_verify:
- ssl->s3->rwstate = SSL_CERTIFICATE_VERIFY;
- hs->wait = ssl_hs_ok;
- return -1;
-
- case ssl_hs_early_data_rejected:
- ssl->s3->rwstate = SSL_EARLY_DATA_REJECTED;
- // Cause |SSL_write| to start failing immediately.
- hs->can_early_write = false;
- return -1;
-
- case ssl_hs_early_return:
- *out_early_return = true;
- hs->wait = ssl_hs_ok;
- return 1;
-
- case ssl_hs_ok:
- break;
- }
-
- // Run the state machine again.
- hs->wait = ssl->do_handshake(hs);
- if (hs->wait == ssl_hs_error) {
- hs->error.reset(ERR_save_state());
- return -1;
- }
- if (hs->wait == ssl_hs_ok) {
- // The handshake has completed.
- *out_early_return = false;
- return 1;
- }
-
- // Otherwise, loop to the beginning and resolve what was blocking the
- // handshake.
- }
- }
-
- } // namespace bssl
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