- /* 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) 1998-2007 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.
- */
- /* ====================================================================
- * Copyright 2005 Nokia. All rights reserved.
- *
- * The portions of the attached software ("Contribution") is developed by
- * Nokia Corporation and is licensed pursuant to the OpenSSL open source
- * license.
- *
- * The Contribution, originally written by Mika Kousa and Pasi Eronen of
- * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
- * support (see RFC 4279) to OpenSSL.
- *
- * No patent licenses or other rights except those expressly stated in
- * the OpenSSL open source license shall be deemed granted or received
- * expressly, by implication, estoppel, or otherwise.
- *
- * No assurances are provided by Nokia that the Contribution does not
- * infringe the patent or other intellectual property rights of any third
- * party or that the license provides you with all the necessary rights
- * to make use of the Contribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
- * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
- * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
- * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
- * OTHERWISE. */
-
- #include <openssl/ssl.h>
-
- #include <assert.h>
- #include <stdlib.h>
- #include <string.h>
-
- #include <openssl/bytestring.h>
- #include <openssl/crypto.h>
- #include <openssl/dh.h>
- #include <openssl/err.h>
- #include <openssl/lhash.h>
- #include <openssl/mem.h>
- #include <openssl/rand.h>
- #include <openssl/x509v3.h>
-
- #include "internal.h"
- #include "../crypto/internal.h"
-
- #if defined(OPENSSL_WINDOWS)
- #include <sys/timeb.h>
- #else
- #include <sys/socket.h>
- #include <sys/time.h>
- #endif
-
-
- /* |SSL_R_UNKNOWN_PROTOCOL| is no longer emitted, but continue to define it
- * to avoid downstream churn. */
- OPENSSL_DECLARE_ERROR_REASON(SSL, UNKNOWN_PROTOCOL)
-
- /* The following errors are no longer emitted, but are used in nginx without
- * #ifdefs. */
- OPENSSL_DECLARE_ERROR_REASON(SSL, BLOCK_CIPHER_PAD_IS_WRONG)
- OPENSSL_DECLARE_ERROR_REASON(SSL, NO_CIPHERS_SPECIFIED)
-
- /* Some error codes are special. Ensure the make_errors.go script never
- * regresses this. */
- OPENSSL_COMPILE_ASSERT(SSL_R_TLSV1_ALERT_NO_RENEGOTIATION ==
- SSL_AD_NO_RENEGOTIATION + SSL_AD_REASON_OFFSET,
- ssl_alert_reason_code_mismatch);
-
- /* kMaxHandshakeSize is the maximum size, in bytes, of a handshake message. */
- static const size_t kMaxHandshakeSize = (1u << 24) - 1;
-
- static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl =
- CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
- static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl_ctx =
- CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
-
- int SSL_library_init(void) {
- CRYPTO_library_init();
- return 1;
- }
-
- static uint32_t ssl_session_hash(const SSL_SESSION *sess) {
- const uint8_t *session_id = sess->session_id;
-
- uint8_t tmp_storage[sizeof(uint32_t)];
- if (sess->session_id_length < sizeof(tmp_storage)) {
- memset(tmp_storage, 0, sizeof(tmp_storage));
- memcpy(tmp_storage, sess->session_id, sess->session_id_length);
- session_id = tmp_storage;
- }
-
- uint32_t hash =
- ((uint32_t)session_id[0]) |
- ((uint32_t)session_id[1] << 8) |
- ((uint32_t)session_id[2] << 16) |
- ((uint32_t)session_id[3] << 24);
-
- return hash;
- }
-
- /* NB: If this function (or indeed the hash function which uses a sort of
- * coarser function than this one) is changed, ensure
- * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
- * able to construct an SSL_SESSION that will collide with any existing session
- * with a matching session ID. */
- static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) {
- if (a->ssl_version != b->ssl_version) {
- return 1;
- }
-
- if (a->session_id_length != b->session_id_length) {
- return 1;
- }
-
- return memcmp(a->session_id, b->session_id, a->session_id_length);
- }
-
- SSL_CTX *SSL_CTX_new(const SSL_METHOD *method) {
- SSL_CTX *ret = NULL;
-
- if (method == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NULL_SSL_METHOD_PASSED);
- return NULL;
- }
-
- if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
- goto err;
- }
-
- ret = OPENSSL_malloc(sizeof(SSL_CTX));
- if (ret == NULL) {
- goto err;
- }
-
- memset(ret, 0, sizeof(SSL_CTX));
-
- ret->method = method->method;
-
- CRYPTO_MUTEX_init(&ret->lock);
-
- ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
- ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
-
- /* We take the system default */
- ret->session_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
-
- ret->references = 1;
-
- ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
- ret->verify_mode = SSL_VERIFY_NONE;
- ret->cert = ssl_cert_new();
- if (ret->cert == NULL) {
- goto err;
- }
-
- ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
- if (ret->sessions == NULL) {
- goto err;
- }
- ret->cert_store = X509_STORE_new();
- if (ret->cert_store == NULL) {
- goto err;
- }
-
- ssl_create_cipher_list(ret->method, &ret->cipher_list,
- &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST);
- if (ret->cipher_list == NULL ||
- sk_SSL_CIPHER_num(ret->cipher_list->ciphers) <= 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
- goto err2;
- }
-
- ret->param = X509_VERIFY_PARAM_new();
- if (!ret->param) {
- goto err;
- }
-
- ret->client_CA = sk_X509_NAME_new_null();
- if (ret->client_CA == NULL) {
- goto err;
- }
-
- CRYPTO_new_ex_data(&ret->ex_data);
-
- ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
-
- /* Setup RFC4507 ticket keys */
- if (!RAND_bytes(ret->tlsext_tick_key_name, 16) ||
- !RAND_bytes(ret->tlsext_tick_hmac_key, 16) ||
- !RAND_bytes(ret->tlsext_tick_aes_key, 16)) {
- ret->options |= SSL_OP_NO_TICKET;
- }
-
- ret->min_version = ret->method->min_version;
- ret->max_version = ret->method->max_version;
-
- /* Lock the SSL_CTX to the specified version, for compatibility with legacy
- * uses of SSL_METHOD. */
- if (method->version != 0) {
- SSL_CTX_set_max_version(ret, method->version);
- SSL_CTX_set_min_version(ret, method->version);
- } else if (!method->method->is_dtls) {
- /* TODO(svaldez): Enable TLS 1.3 by default once fully implemented. */
- SSL_CTX_set_max_version(ret, TLS1_2_VERSION);
- }
-
- return ret;
-
- err:
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- err2:
- SSL_CTX_free(ret);
- return NULL;
- }
-
- int SSL_CTX_up_ref(SSL_CTX *ctx) {
- CRYPTO_refcount_inc(&ctx->references);
- return 1;
- }
-
- void SSL_CTX_free(SSL_CTX *ctx) {
- if (ctx == NULL ||
- !CRYPTO_refcount_dec_and_test_zero(&ctx->references)) {
- return;
- }
-
- X509_VERIFY_PARAM_free(ctx->param);
-
- /* Free internal session cache. However: the remove_cb() may reference the
- * ex_data of SSL_CTX, thus the ex_data store can only be removed after the
- * sessions were flushed. As the ex_data handling routines might also touch
- * the session cache, the most secure solution seems to be: empty (flush) the
- * cache, then free ex_data, then finally free the cache. (See ticket
- * [openssl.org #212].) */
- SSL_CTX_flush_sessions(ctx, 0);
-
- CRYPTO_free_ex_data(&g_ex_data_class_ssl_ctx, ctx, &ctx->ex_data);
-
- CRYPTO_MUTEX_cleanup(&ctx->lock);
- lh_SSL_SESSION_free(ctx->sessions);
- X509_STORE_free(ctx->cert_store);
- ssl_cipher_preference_list_free(ctx->cipher_list);
- sk_SSL_CIPHER_free(ctx->cipher_list_by_id);
- ssl_cipher_preference_list_free(ctx->cipher_list_tls10);
- ssl_cipher_preference_list_free(ctx->cipher_list_tls11);
- ssl_cert_free(ctx->cert);
- sk_SSL_CUSTOM_EXTENSION_pop_free(ctx->client_custom_extensions,
- SSL_CUSTOM_EXTENSION_free);
- sk_SSL_CUSTOM_EXTENSION_pop_free(ctx->server_custom_extensions,
- SSL_CUSTOM_EXTENSION_free);
- sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free);
- sk_SRTP_PROTECTION_PROFILE_free(ctx->srtp_profiles);
- OPENSSL_free(ctx->psk_identity_hint);
- OPENSSL_free(ctx->supported_group_list);
- OPENSSL_free(ctx->alpn_client_proto_list);
- OPENSSL_free(ctx->ocsp_response);
- OPENSSL_free(ctx->signed_cert_timestamp_list);
- EVP_PKEY_free(ctx->tlsext_channel_id_private);
-
- OPENSSL_free(ctx);
- }
-
- SSL *SSL_new(SSL_CTX *ctx) {
- if (ctx == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NULL_SSL_CTX);
- return NULL;
- }
- if (ctx->method == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
- return NULL;
- }
-
- SSL *ssl = OPENSSL_malloc(sizeof(SSL));
- if (ssl == NULL) {
- goto err;
- }
- memset(ssl, 0, sizeof(SSL));
-
- ssl->min_version = ctx->min_version;
- ssl->max_version = ctx->max_version;
-
- ssl->state = SSL_ST_INIT;
-
- /* RFC 6347 states that implementations SHOULD use an initial timer value of
- * 1 second. */
- ssl->initial_timeout_duration_ms = 1000;
-
- ssl->options = ctx->options;
- ssl->mode = ctx->mode;
- ssl->max_cert_list = ctx->max_cert_list;
-
- ssl->cert = ssl_cert_dup(ctx->cert);
- if (ssl->cert == NULL) {
- goto err;
- }
-
- ssl->msg_callback = ctx->msg_callback;
- ssl->msg_callback_arg = ctx->msg_callback_arg;
- ssl->verify_mode = ctx->verify_mode;
- ssl->sid_ctx_length = ctx->sid_ctx_length;
- assert(ssl->sid_ctx_length <= sizeof ssl->sid_ctx);
- memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
- ssl->verify_callback = ctx->default_verify_callback;
-
- ssl->param = X509_VERIFY_PARAM_new();
- if (!ssl->param) {
- goto err;
- }
- X509_VERIFY_PARAM_inherit(ssl->param, ctx->param);
- ssl->quiet_shutdown = ctx->quiet_shutdown;
- ssl->max_send_fragment = ctx->max_send_fragment;
-
- CRYPTO_refcount_inc(&ctx->references);
- ssl->ctx = ctx;
- CRYPTO_refcount_inc(&ctx->references);
- ssl->initial_ctx = ctx;
-
- if (ctx->supported_group_list) {
- ssl->supported_group_list =
- BUF_memdup(ctx->supported_group_list,
- ctx->supported_group_list_len * 2);
- if (!ssl->supported_group_list) {
- goto err;
- }
- ssl->supported_group_list_len = ctx->supported_group_list_len;
- }
-
- if (ssl->ctx->alpn_client_proto_list) {
- ssl->alpn_client_proto_list = BUF_memdup(
- ssl->ctx->alpn_client_proto_list, ssl->ctx->alpn_client_proto_list_len);
- if (ssl->alpn_client_proto_list == NULL) {
- goto err;
- }
- ssl->alpn_client_proto_list_len = ssl->ctx->alpn_client_proto_list_len;
- }
-
- ssl->method = ctx->method;
-
- if (!ssl->method->ssl_new(ssl)) {
- goto err;
- }
-
- ssl->rwstate = SSL_NOTHING;
-
- CRYPTO_new_ex_data(&ssl->ex_data);
-
- ssl->psk_identity_hint = NULL;
- if (ctx->psk_identity_hint) {
- ssl->psk_identity_hint = BUF_strdup(ctx->psk_identity_hint);
- if (ssl->psk_identity_hint == NULL) {
- goto err;
- }
- }
- ssl->psk_client_callback = ctx->psk_client_callback;
- ssl->psk_server_callback = ctx->psk_server_callback;
-
- ssl->tlsext_channel_id_enabled = ctx->tlsext_channel_id_enabled;
- if (ctx->tlsext_channel_id_private) {
- EVP_PKEY_up_ref(ctx->tlsext_channel_id_private);
- ssl->tlsext_channel_id_private = ctx->tlsext_channel_id_private;
- }
-
- ssl->signed_cert_timestamps_enabled =
- ssl->ctx->signed_cert_timestamps_enabled;
- ssl->ocsp_stapling_enabled = ssl->ctx->ocsp_stapling_enabled;
-
- return ssl;
-
- err:
- SSL_free(ssl);
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
-
- return NULL;
- }
-
- void SSL_free(SSL *ssl) {
- if (ssl == NULL) {
- return;
- }
-
- X509_VERIFY_PARAM_free(ssl->param);
-
- CRYPTO_free_ex_data(&g_ex_data_class_ssl, ssl, &ssl->ex_data);
-
- ssl_free_wbio_buffer(ssl);
- assert(ssl->bbio == NULL);
-
- BIO_free_all(ssl->rbio);
- BIO_free_all(ssl->wbio);
-
- BUF_MEM_free(ssl->init_buf);
-
- /* add extra stuff */
- ssl_cipher_preference_list_free(ssl->cipher_list);
- sk_SSL_CIPHER_free(ssl->cipher_list_by_id);
-
- SSL_SESSION_free(ssl->session);
-
- ssl_cert_free(ssl->cert);
-
- OPENSSL_free(ssl->tlsext_hostname);
- SSL_CTX_free(ssl->initial_ctx);
- OPENSSL_free(ssl->supported_group_list);
- OPENSSL_free(ssl->alpn_client_proto_list);
- EVP_PKEY_free(ssl->tlsext_channel_id_private);
- OPENSSL_free(ssl->psk_identity_hint);
- sk_X509_NAME_pop_free(ssl->client_CA, X509_NAME_free);
- sk_SRTP_PROTECTION_PROFILE_free(ssl->srtp_profiles);
-
- if (ssl->method != NULL) {
- ssl->method->ssl_free(ssl);
- }
- SSL_CTX_free(ssl->ctx);
-
- OPENSSL_free(ssl);
- }
-
- void SSL_set_connect_state(SSL *ssl) {
- ssl->server = 0;
- ssl->handshake_func = ssl3_connect;
- }
-
- void SSL_set_accept_state(SSL *ssl) {
- ssl->server = 1;
- ssl->handshake_func = ssl3_accept;
- }
-
- void SSL_set0_rbio(SSL *ssl, BIO *rbio) {
- BIO_free_all(ssl->rbio);
- ssl->rbio = rbio;
- }
-
- void SSL_set0_wbio(SSL *ssl, BIO *wbio) {
- /* If the output buffering BIO is still in place, remove it. */
- if (ssl->bbio != NULL) {
- ssl->wbio = BIO_pop(ssl->wbio);
- }
-
- BIO_free_all(ssl->wbio);
- ssl->wbio = wbio;
-
- /* Re-attach |bbio| to the new |wbio|. */
- if (ssl->bbio != NULL) {
- ssl->wbio = BIO_push(ssl->bbio, ssl->wbio);
- }
- }
-
- void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio) {
- /* For historical reasons, this function has many different cases in ownership
- * handling. */
-
- /* If nothing has changed, do nothing */
- if (rbio == SSL_get_rbio(ssl) && wbio == SSL_get_wbio(ssl)) {
- return;
- }
-
- /* If the two arguments are equal, one fewer reference is granted than
- * taken. */
- if (rbio != NULL && rbio == wbio) {
- BIO_up_ref(rbio);
- }
-
- /* If only the wbio is changed, adopt only one reference. */
- if (rbio == SSL_get_rbio(ssl)) {
- SSL_set0_wbio(ssl, wbio);
- return;
- }
-
- /* There is an asymmetry here for historical reasons. If only the rbio is
- * changed AND the rbio and wbio were originally different, then we only adopt
- * one reference. */
- if (wbio == SSL_get_wbio(ssl) && SSL_get_rbio(ssl) != SSL_get_wbio(ssl)) {
- SSL_set0_rbio(ssl, rbio);
- return;
- }
-
- /* Otherwise, adopt both references. */
- SSL_set0_rbio(ssl, rbio);
- SSL_set0_wbio(ssl, wbio);
- }
-
- BIO *SSL_get_rbio(const SSL *ssl) { return ssl->rbio; }
-
- BIO *SSL_get_wbio(const SSL *ssl) {
- if (ssl->bbio != NULL) {
- /* If |bbio| is active, the true caller-configured BIO is its |next_bio|. */
- assert(ssl->bbio == ssl->wbio);
- return ssl->bbio->next_bio;
- }
- return ssl->wbio;
- }
-
- int SSL_do_handshake(SSL *ssl) {
- ssl->rwstate = SSL_NOTHING;
- /* Functions which use SSL_get_error must clear the error queue on entry. */
- ERR_clear_error();
- ERR_clear_system_error();
-
- if (ssl->handshake_func == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
- return -1;
- }
-
- if (!SSL_in_init(ssl)) {
- return 1;
- }
-
- return ssl->handshake_func(ssl);
- }
-
- int SSL_connect(SSL *ssl) {
- if (ssl->handshake_func == NULL) {
- /* Not properly initialized yet */
- SSL_set_connect_state(ssl);
- }
-
- return SSL_do_handshake(ssl);
- }
-
- int SSL_accept(SSL *ssl) {
- if (ssl->handshake_func == NULL) {
- /* Not properly initialized yet */
- SSL_set_accept_state(ssl);
- }
-
- return SSL_do_handshake(ssl);
- }
-
- static int ssl_do_renegotiate(SSL *ssl) {
- /* We do not accept renegotiations as a server. */
- if (ssl->server) {
- goto no_renegotiation;
- }
-
- if (ssl->s3->tmp.message_type != SSL3_MT_HELLO_REQUEST ||
- ssl->init_num != 0) {
- ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
- OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HELLO_REQUEST);
- return 0;
- }
-
- switch (ssl->renegotiate_mode) {
- case ssl_renegotiate_ignore:
- /* Ignore the HelloRequest. */
- return 1;
-
- case ssl_renegotiate_once:
- if (ssl->s3->total_renegotiations != 0) {
- goto no_renegotiation;
- }
- break;
-
- case ssl_renegotiate_never:
- goto no_renegotiation;
-
- case ssl_renegotiate_freely:
- break;
- }
-
- /* Renegotiation is only supported at quiescent points in the application
- * protocol, namely in HTTPS, just before reading the HTTP response. Require
- * the record-layer be idle and avoid complexities of sending a handshake
- * record while an application_data record is being written. */
- if (ssl_write_buffer_is_pending(ssl)) {
- goto no_renegotiation;
- }
-
- /* Begin a new handshake. */
- ssl->s3->total_renegotiations++;
- ssl->state = SSL_ST_INIT;
- return 1;
-
- no_renegotiation:
- ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_NO_RENEGOTIATION);
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
- return 0;
- }
-
- static int ssl_do_post_handshake(SSL *ssl) {
- if (ssl3_protocol_version(ssl) < TLS1_3_VERSION) {
- return ssl_do_renegotiate(ssl);
- }
-
- return tls13_post_handshake(ssl);
- }
-
- static int ssl_read_impl(SSL *ssl, void *buf, int num, int peek) {
- ssl->rwstate = SSL_NOTHING;
- /* Functions which use SSL_get_error must clear the error queue on entry. */
- ERR_clear_error();
- ERR_clear_system_error();
-
- if (ssl->handshake_func == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- for (;;) {
- /* Complete the current handshake, if any. False Start will cause
- * |SSL_do_handshake| to return mid-handshake, so this may require multiple
- * iterations. */
- while (SSL_in_init(ssl)) {
- int ret = SSL_do_handshake(ssl);
- if (ret < 0) {
- return ret;
- }
- if (ret == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
- return -1;
- }
- }
-
- int got_handshake;
- int ret = ssl->method->read_app_data(ssl, &got_handshake, buf, num, peek);
- if (ret > 0 || !got_handshake) {
- ssl->s3->key_update_count = 0;
- return ret;
- }
-
- /* Handle the post-handshake message and try again. */
- if (!ssl_do_post_handshake(ssl)) {
- return -1;
- }
- ssl->method->release_current_message(ssl, 1 /* free buffer */);
- }
- }
-
- int SSL_read(SSL *ssl, void *buf, int num) {
- return ssl_read_impl(ssl, buf, num, 0 /* consume bytes */);
- }
-
- int SSL_peek(SSL *ssl, void *buf, int num) {
- return ssl_read_impl(ssl, buf, num, 1 /* peek */);
- }
-
- int SSL_write(SSL *ssl, const void *buf, int num) {
- ssl->rwstate = SSL_NOTHING;
- /* Functions which use SSL_get_error must clear the error queue on entry. */
- ERR_clear_error();
- ERR_clear_system_error();
-
- if (ssl->handshake_func == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- if (ssl->s3->send_shutdown != ssl_shutdown_none) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
- return -1;
- }
-
- /* If necessary, complete the handshake implicitly. */
- if (SSL_in_init(ssl) && !SSL_in_false_start(ssl)) {
- int ret = SSL_do_handshake(ssl);
- if (ret < 0) {
- return ret;
- }
- if (ret == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
- return -1;
- }
- }
-
- return ssl->method->write_app_data(ssl, buf, num);
- }
-
- int SSL_shutdown(SSL *ssl) {
- ssl->rwstate = SSL_NOTHING;
- /* Functions which use SSL_get_error must clear the error queue on entry. */
- ERR_clear_error();
- ERR_clear_system_error();
-
- if (ssl->handshake_func == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- /* We can't shutdown properly if we are in the middle of a handshake. */
- if (SSL_in_init(ssl)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
- return -1;
- }
-
- if (ssl->quiet_shutdown) {
- /* Do nothing if configured not to send a close_notify. */
- ssl->s3->send_shutdown = ssl_shutdown_close_notify;
- ssl->s3->recv_shutdown = ssl_shutdown_close_notify;
- return 1;
- }
-
- /* This function completes in two stages. It sends a close_notify and then it
- * waits for a close_notify to come in. Perform exactly one action and return
- * whether or not it succeeds. */
-
- if (ssl->s3->send_shutdown != ssl_shutdown_close_notify) {
- /* Send a close_notify. */
- if (ssl3_send_alert(ssl, SSL3_AL_WARNING, SSL_AD_CLOSE_NOTIFY) <= 0) {
- return -1;
- }
- } else if (ssl->s3->alert_dispatch) {
- /* Finish sending the close_notify. */
- if (ssl->method->dispatch_alert(ssl) <= 0) {
- return -1;
- }
- } else if (ssl->s3->recv_shutdown != ssl_shutdown_close_notify) {
- /* Wait for the peer's close_notify. */
- ssl->method->read_close_notify(ssl);
- if (ssl->s3->recv_shutdown != ssl_shutdown_close_notify) {
- return -1;
- }
- }
-
- /* Return 0 for unidirectional shutdown and 1 for bidirectional shutdown. */
- return ssl->s3->recv_shutdown == ssl_shutdown_close_notify;
- }
-
- int SSL_send_fatal_alert(SSL *ssl, uint8_t alert) {
- if (ssl->s3->alert_dispatch) {
- if (ssl->s3->send_alert[0] != SSL3_AL_FATAL ||
- ssl->s3->send_alert[1] != alert) {
- /* We are already attempting to write a different alert. */
- OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
- return -1;
- }
- return ssl->method->dispatch_alert(ssl);
- }
-
- return ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
- }
-
- int SSL_get_error(const SSL *ssl, int ret_code) {
- int reason;
- uint32_t err;
- BIO *bio;
-
- if (ret_code > 0) {
- return SSL_ERROR_NONE;
- }
-
- /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
- * where we do encode the error */
- err = ERR_peek_error();
- if (err != 0) {
- if (ERR_GET_LIB(err) == ERR_LIB_SYS) {
- return SSL_ERROR_SYSCALL;
- }
- return SSL_ERROR_SSL;
- }
-
- if (ret_code == 0) {
- if (ssl->s3->recv_shutdown == ssl_shutdown_close_notify) {
- return SSL_ERROR_ZERO_RETURN;
- }
- /* An EOF was observed which violates the protocol, and the underlying
- * transport does not participate in the error queue. Bubble up to the
- * caller. */
- return SSL_ERROR_SYSCALL;
- }
-
- if (SSL_want_session(ssl)) {
- return SSL_ERROR_PENDING_SESSION;
- }
-
- if (SSL_want_certificate(ssl)) {
- return SSL_ERROR_PENDING_CERTIFICATE;
- }
-
- if (SSL_want_read(ssl)) {
- bio = SSL_get_rbio(ssl);
- if (BIO_should_read(bio)) {
- return SSL_ERROR_WANT_READ;
- }
-
- if (BIO_should_write(bio)) {
- /* This one doesn't make too much sense ... We never try to write to the
- * rbio, and an application program where rbio and wbio are separate
- * couldn't even know what it should wait for. However if we ever set
- * ssl->rwstate incorrectly (so that we have SSL_want_read(ssl) instead of
- * SSL_want_write(ssl)) and rbio and wbio *are* the same, this test works
- * around that bug; so it might be safer to keep it. */
- return SSL_ERROR_WANT_WRITE;
- }
-
- if (BIO_should_io_special(bio)) {
- reason = BIO_get_retry_reason(bio);
- if (reason == BIO_RR_CONNECT) {
- return SSL_ERROR_WANT_CONNECT;
- }
-
- if (reason == BIO_RR_ACCEPT) {
- return SSL_ERROR_WANT_ACCEPT;
- }
-
- return SSL_ERROR_SYSCALL; /* unknown */
- }
- }
-
- if (SSL_want_write(ssl)) {
- bio = SSL_get_wbio(ssl);
- if (BIO_should_write(bio)) {
- return SSL_ERROR_WANT_WRITE;
- }
-
- if (BIO_should_read(bio)) {
- /* See above (SSL_want_read(ssl) with BIO_should_write(bio)) */
- return SSL_ERROR_WANT_READ;
- }
-
- if (BIO_should_io_special(bio)) {
- reason = BIO_get_retry_reason(bio);
- if (reason == BIO_RR_CONNECT) {
- return SSL_ERROR_WANT_CONNECT;
- }
-
- if (reason == BIO_RR_ACCEPT) {
- return SSL_ERROR_WANT_ACCEPT;
- }
-
- return SSL_ERROR_SYSCALL;
- }
- }
-
- if (SSL_want_x509_lookup(ssl)) {
- return SSL_ERROR_WANT_X509_LOOKUP;
- }
-
- if (SSL_want_channel_id_lookup(ssl)) {
- return SSL_ERROR_WANT_CHANNEL_ID_LOOKUP;
- }
-
- if (SSL_want_private_key_operation(ssl)) {
- return SSL_ERROR_WANT_PRIVATE_KEY_OPERATION;
- }
-
- return SSL_ERROR_SYSCALL;
- }
-
- void SSL_CTX_set_min_version(SSL_CTX *ctx, uint16_t version) {
- ctx->min_version = ctx->method->version_from_wire(version);
- }
-
- void SSL_CTX_set_max_version(SSL_CTX *ctx, uint16_t version) {
- ctx->max_version = ctx->method->version_from_wire(version);
- }
-
- void SSL_set_min_version(SSL *ssl, uint16_t version) {
- ssl->min_version = ssl->method->version_from_wire(version);
- }
-
- void SSL_set_max_version(SSL *ssl, uint16_t version) {
- ssl->max_version = ssl->method->version_from_wire(version);
- }
-
- void SSL_set_fallback_version(SSL *ssl, uint16_t version) {
- ssl->fallback_version = ssl->method->version_from_wire(version);
- }
-
- uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options) {
- ctx->options |= options;
- return ctx->options;
- }
-
- uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options) {
- ctx->options &= ~options;
- return ctx->options;
- }
-
- uint32_t SSL_CTX_get_options(const SSL_CTX *ctx) { return ctx->options; }
-
- uint32_t SSL_set_options(SSL *ssl, uint32_t options) {
- ssl->options |= options;
- return ssl->options;
- }
-
- uint32_t SSL_clear_options(SSL *ssl, uint32_t options) {
- ssl->options &= ~options;
- return ssl->options;
- }
-
- uint32_t SSL_get_options(const SSL *ssl) { return ssl->options; }
-
- uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode) {
- ctx->mode |= mode;
- return ctx->mode;
- }
-
- uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode) {
- ctx->mode &= ~mode;
- return ctx->mode;
- }
-
- uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx) { return ctx->mode; }
-
- uint32_t SSL_set_mode(SSL *ssl, uint32_t mode) {
- ssl->mode |= mode;
- return ssl->mode;
- }
-
- uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode) {
- ssl->mode &= ~mode;
- return ssl->mode;
- }
-
- uint32_t SSL_get_mode(const SSL *ssl) { return ssl->mode; }
-
- X509 *SSL_get_peer_certificate(const SSL *ssl) {
- if (ssl == NULL) {
- return NULL;
- }
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL || session->peer == NULL) {
- return NULL;
- }
- X509_up_ref(session->peer);
- return session->peer;
- }
-
- STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl) {
- if (ssl == NULL) {
- return NULL;
- }
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL) {
- return NULL;
- }
- return session->cert_chain;
- }
-
- int SSL_get_tls_unique(const SSL *ssl, uint8_t *out, size_t *out_len,
- size_t max_out) {
- /* The tls-unique value is the first Finished message in the handshake, which
- * is the client's in a full handshake and the server's for a resumption. See
- * https://tools.ietf.org/html/rfc5929#section-3.1. */
- const uint8_t *finished = ssl->s3->previous_client_finished;
- size_t finished_len = ssl->s3->previous_client_finished_len;
- if (ssl->session != NULL) {
- /* tls-unique is broken for resumed sessions unless EMS is used. */
- if (!ssl->session->extended_master_secret) {
- goto err;
- }
- finished = ssl->s3->previous_server_finished;
- finished_len = ssl->s3->previous_server_finished_len;
- }
-
- if (!ssl->s3->initial_handshake_complete ||
- ssl->version < TLS1_VERSION) {
- goto err;
- }
-
- *out_len = finished_len;
- if (finished_len > max_out) {
- *out_len = max_out;
- }
-
- memcpy(out, finished, *out_len);
- return 1;
-
- err:
- *out_len = 0;
- memset(out, 0, max_out);
- return 0;
- }
-
- int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const uint8_t *sid_ctx,
- unsigned sid_ctx_len) {
- if (sid_ctx_len > sizeof(ctx->sid_ctx)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
- return 0;
- }
- ctx->sid_ctx_length = sid_ctx_len;
- memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
-
- return 1;
- }
-
- int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
- unsigned sid_ctx_len) {
- if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
- return 0;
- }
- ssl->sid_ctx_length = sid_ctx_len;
- memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
-
- return 1;
- }
-
- int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose) {
- return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
- }
-
- int SSL_set_purpose(SSL *ssl, int purpose) {
- return X509_VERIFY_PARAM_set_purpose(ssl->param, purpose);
- }
-
- int SSL_CTX_set_trust(SSL_CTX *ctx, int trust) {
- return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
- }
-
- int SSL_set_trust(SSL *ssl, int trust) {
- return X509_VERIFY_PARAM_set_trust(ssl->param, trust);
- }
-
- int SSL_CTX_set1_param(SSL_CTX *ctx, const X509_VERIFY_PARAM *param) {
- return X509_VERIFY_PARAM_set1(ctx->param, param);
- }
-
- int SSL_set1_param(SSL *ssl, const X509_VERIFY_PARAM *param) {
- return X509_VERIFY_PARAM_set1(ssl->param, param);
- }
-
- void ssl_cipher_preference_list_free(
- struct ssl_cipher_preference_list_st *cipher_list) {
- if (cipher_list == NULL) {
- return;
- }
- sk_SSL_CIPHER_free(cipher_list->ciphers);
- OPENSSL_free(cipher_list->in_group_flags);
- OPENSSL_free(cipher_list);
- }
-
- X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) { return ctx->param; }
-
- X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) { return ssl->param; }
-
- void SSL_certs_clear(SSL *ssl) { ssl_cert_clear_certs(ssl->cert); }
-
- int SSL_get_fd(const SSL *ssl) { return SSL_get_rfd(ssl); }
-
- int SSL_get_rfd(const SSL *ssl) {
- int ret = -1;
- BIO *b = BIO_find_type(SSL_get_rbio(ssl), BIO_TYPE_DESCRIPTOR);
- if (b != NULL) {
- BIO_get_fd(b, &ret);
- }
- return ret;
- }
-
- int SSL_get_wfd(const SSL *ssl) {
- int ret = -1;
- BIO *b = BIO_find_type(SSL_get_wbio(ssl), BIO_TYPE_DESCRIPTOR);
- if (b != NULL) {
- BIO_get_fd(b, &ret);
- }
- return ret;
- }
-
- int SSL_set_fd(SSL *ssl, int fd) {
- BIO *bio = BIO_new(BIO_s_socket());
- if (bio == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
- return 0;
- }
- BIO_set_fd(bio, fd, BIO_NOCLOSE);
- SSL_set_bio(ssl, bio, bio);
- return 1;
- }
-
- int SSL_set_wfd(SSL *ssl, int fd) {
- BIO *rbio = SSL_get_rbio(ssl);
- if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET ||
- BIO_get_fd(rbio, NULL) != fd) {
- BIO *bio = BIO_new(BIO_s_socket());
- if (bio == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
- return 0;
- }
- BIO_set_fd(bio, fd, BIO_NOCLOSE);
- SSL_set0_wbio(ssl, bio);
- } else {
- /* Copy the rbio over to the wbio. */
- BIO_up_ref(rbio);
- SSL_set0_wbio(ssl, rbio);
- }
-
- return 1;
- }
-
- int SSL_set_rfd(SSL *ssl, int fd) {
- BIO *wbio = SSL_get_wbio(ssl);
- if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET ||
- BIO_get_fd(wbio, NULL) != fd) {
- BIO *bio = BIO_new(BIO_s_socket());
- if (bio == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
- return 0;
- }
- BIO_set_fd(bio, fd, BIO_NOCLOSE);
- SSL_set0_rbio(ssl, bio);
- } else {
- /* Copy the wbio over to the rbio. */
- BIO_up_ref(wbio);
- SSL_set0_rbio(ssl, wbio);
- }
- return 1;
- }
-
- size_t SSL_get_finished(const SSL *ssl, void *buf, size_t count) {
- size_t ret = 0;
-
- if (ssl->s3 != NULL) {
- ret = ssl->s3->tmp.finish_md_len;
- if (count > ret) {
- count = ret;
- }
- memcpy(buf, ssl->s3->tmp.finish_md, count);
- }
-
- return ret;
- }
-
- size_t SSL_get_peer_finished(const SSL *ssl, void *buf, size_t count) {
- size_t ret = 0;
-
- if (ssl->s3 != NULL) {
- ret = ssl->s3->tmp.peer_finish_md_len;
- if (count > ret) {
- count = ret;
- }
- memcpy(buf, ssl->s3->tmp.peer_finish_md, count);
- }
-
- return ret;
- }
-
- int SSL_get_verify_mode(const SSL *ssl) { return ssl->verify_mode; }
-
- int SSL_get_verify_depth(const SSL *ssl) {
- return X509_VERIFY_PARAM_get_depth(ssl->param);
- }
-
- int SSL_get_extms_support(const SSL *ssl) {
- if (!ssl->s3->have_version) {
- return 0;
- }
- return ssl3_protocol_version(ssl) >= TLS1_3_VERSION ||
- ssl->s3->tmp.extended_master_secret == 1;
- }
-
- int (*SSL_get_verify_callback(const SSL *ssl))(int, X509_STORE_CTX *) {
- return ssl->verify_callback;
- }
-
- int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) { return ctx->verify_mode; }
-
- int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) {
- return X509_VERIFY_PARAM_get_depth(ctx->param);
- }
-
- int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
- int ok, X509_STORE_CTX *store_ctx) {
- return ctx->default_verify_callback;
- }
-
- void SSL_set_verify(SSL *ssl, int mode,
- int (*callback)(int ok, X509_STORE_CTX *store_ctx)) {
- ssl->verify_mode = mode;
- if (callback != NULL) {
- ssl->verify_callback = callback;
- }
- }
-
- void SSL_set_verify_depth(SSL *ssl, int depth) {
- X509_VERIFY_PARAM_set_depth(ssl->param, depth);
- }
-
- int SSL_CTX_get_read_ahead(const SSL_CTX *ctx) { return 0; }
-
- int SSL_get_read_ahead(const SSL *ssl) { return 0; }
-
- void SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes) { }
-
- void SSL_set_read_ahead(SSL *ssl, int yes) { }
-
- int SSL_pending(const SSL *ssl) {
- if (ssl->s3->rrec.type != SSL3_RT_APPLICATION_DATA) {
- return 0;
- }
- return ssl->s3->rrec.length;
- }
-
- /* Fix this so it checks all the valid key/cert options */
- int SSL_CTX_check_private_key(const SSL_CTX *ctx) {
- if (ctx->cert->x509 == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
- return 0;
- }
-
- if (ctx->cert->privatekey == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
- return 0;
- }
-
- return X509_check_private_key(ctx->cert->x509, ctx->cert->privatekey);
- }
-
- /* Fix this function so that it takes an optional type parameter */
- int SSL_check_private_key(const SSL *ssl) {
- if (ssl->cert->x509 == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
- return 0;
- }
-
- if (ssl->cert->privatekey == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
- return 0;
- }
-
- return X509_check_private_key(ssl->cert->x509, ssl->cert->privatekey);
- }
-
- long SSL_get_default_timeout(const SSL *ssl) {
- return SSL_DEFAULT_SESSION_TIMEOUT;
- }
-
- int SSL_renegotiate(SSL *ssl) {
- /* Caller-initiated renegotiation is not supported. */
- OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- int SSL_renegotiate_pending(SSL *ssl) {
- return SSL_in_init(ssl) && ssl->s3->initial_handshake_complete;
- }
-
- int SSL_total_renegotiations(const SSL *ssl) {
- return ssl->s3->total_renegotiations;
- }
-
- size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx) {
- return ctx->max_cert_list;
- }
-
- void SSL_CTX_set_max_cert_list(SSL_CTX *ctx, size_t max_cert_list) {
- if (max_cert_list > kMaxHandshakeSize) {
- max_cert_list = kMaxHandshakeSize;
- }
- ctx->max_cert_list = (uint32_t)max_cert_list;
- }
-
- size_t SSL_get_max_cert_list(const SSL *ssl) {
- return ssl->max_cert_list;
- }
-
- void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list) {
- if (max_cert_list > kMaxHandshakeSize) {
- max_cert_list = kMaxHandshakeSize;
- }
- ssl->max_cert_list = (uint32_t)max_cert_list;
- }
-
- int SSL_CTX_set_max_send_fragment(SSL_CTX *ctx, size_t max_send_fragment) {
- if (max_send_fragment < 512) {
- max_send_fragment = 512;
- }
- if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
- max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
- }
- ctx->max_send_fragment = (uint16_t)max_send_fragment;
-
- return 1;
- }
-
- int SSL_set_max_send_fragment(SSL *ssl, size_t max_send_fragment) {
- if (max_send_fragment < 512) {
- max_send_fragment = 512;
- }
- if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
- max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
- }
- ssl->max_send_fragment = (uint16_t)max_send_fragment;
-
- return 1;
- }
-
- int SSL_set_mtu(SSL *ssl, unsigned mtu) {
- if (!SSL_is_dtls(ssl) || mtu < dtls1_min_mtu()) {
- return 0;
- }
- ssl->d1->mtu = mtu;
- return 1;
- }
-
- int SSL_get_secure_renegotiation_support(const SSL *ssl) {
- return ssl->s3->send_connection_binding;
- }
-
- LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) { return ctx->sessions; }
-
- size_t SSL_CTX_sess_number(const SSL_CTX *ctx) {
- return lh_SSL_SESSION_num_items(ctx->sessions);
- }
-
- unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, unsigned long size) {
- unsigned long ret = ctx->session_cache_size;
- ctx->session_cache_size = size;
- return ret;
- }
-
- unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx) {
- return ctx->session_cache_size;
- }
-
- int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode) {
- int ret = ctx->session_cache_mode;
- ctx->session_cache_mode = mode;
- return ret;
- }
-
- int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx) {
- return ctx->session_cache_mode;
- }
-
-
- int SSL_CTX_get_tlsext_ticket_keys(SSL_CTX *ctx, void *out, size_t len) {
- if (out == NULL) {
- return 48;
- }
- if (len != 48) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH);
- return 0;
- }
- uint8_t *out_bytes = out;
- memcpy(out_bytes, ctx->tlsext_tick_key_name, 16);
- memcpy(out_bytes + 16, ctx->tlsext_tick_hmac_key, 16);
- memcpy(out_bytes + 32, ctx->tlsext_tick_aes_key, 16);
- return 1;
- }
-
- int SSL_CTX_set_tlsext_ticket_keys(SSL_CTX *ctx, const void *in, size_t len) {
- if (in == NULL) {
- return 48;
- }
- if (len != 48) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH);
- return 0;
- }
- const uint8_t *in_bytes = in;
- memcpy(ctx->tlsext_tick_key_name, in_bytes, 16);
- memcpy(ctx->tlsext_tick_hmac_key, in_bytes + 16, 16);
- memcpy(ctx->tlsext_tick_aes_key, in_bytes + 32, 16);
- return 1;
- }
-
- int SSL_CTX_set_tlsext_ticket_key_cb(
- SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
- EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
- int encrypt)) {
- ctx->tlsext_ticket_key_cb = callback;
- return 1;
- }
-
- int SSL_CTX_set1_curves(SSL_CTX *ctx, const int *curves, size_t curves_len) {
- return tls1_set_curves(&ctx->supported_group_list,
- &ctx->supported_group_list_len, curves,
- curves_len);
- }
-
- int SSL_set1_curves(SSL *ssl, const int *curves, size_t curves_len) {
- return tls1_set_curves(&ssl->supported_group_list,
- &ssl->supported_group_list_len, curves,
- curves_len);
- }
-
- uint16_t SSL_get_curve_id(const SSL *ssl) {
- /* TODO(davidben): This checks the wrong session if there is a renegotiation in
- * progress. */
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL ||
- session->cipher == NULL ||
- !SSL_CIPHER_is_ECDHE(session->cipher)) {
- return 0;
- }
-
- return (uint16_t)session->key_exchange_info;
- }
-
- int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh) {
- DH_free(ctx->cert->dh_tmp);
- ctx->cert->dh_tmp = DHparams_dup(dh);
- if (ctx->cert->dh_tmp == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_DH_LIB);
- return 0;
- }
- return 1;
- }
-
- int SSL_set_tmp_dh(SSL *ssl, const DH *dh) {
- DH_free(ssl->cert->dh_tmp);
- ssl->cert->dh_tmp = DHparams_dup(dh);
- if (ssl->cert->dh_tmp == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_DH_LIB);
- return 0;
- }
- return 1;
- }
-
- STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl) {
- if (ssl == NULL) {
- return NULL;
- }
-
- if (ssl->cipher_list != NULL) {
- return ssl->cipher_list->ciphers;
- }
-
- if (ssl->version >= TLS1_1_VERSION && ssl->ctx->cipher_list_tls11 != NULL) {
- return ssl->ctx->cipher_list_tls11->ciphers;
- }
-
- if (ssl->version >= TLS1_VERSION && ssl->ctx->cipher_list_tls10 != NULL) {
- return ssl->ctx->cipher_list_tls10->ciphers;
- }
-
- if (ssl->ctx->cipher_list != NULL) {
- return ssl->ctx->cipher_list->ciphers;
- }
-
- return NULL;
- }
-
- /* return a STACK of the ciphers available for the SSL and in order of
- * algorithm id */
- STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *ssl) {
- if (ssl == NULL) {
- return NULL;
- }
-
- if (ssl->cipher_list_by_id != NULL) {
- return ssl->cipher_list_by_id;
- }
-
- if (ssl->ctx->cipher_list_by_id != NULL) {
- return ssl->ctx->cipher_list_by_id;
- }
-
- return NULL;
- }
-
- const char *SSL_get_cipher_list(const SSL *ssl, int n) {
- const SSL_CIPHER *c;
- STACK_OF(SSL_CIPHER) *sk;
-
- if (ssl == NULL) {
- return NULL;
- }
-
- sk = SSL_get_ciphers(ssl);
- if (sk == NULL || n < 0 || (size_t)n >= sk_SSL_CIPHER_num(sk)) {
- return NULL;
- }
-
- c = sk_SSL_CIPHER_value(sk, n);
- if (c == NULL) {
- return NULL;
- }
-
- return c->name;
- }
-
- int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) {
- STACK_OF(SSL_CIPHER) *cipher_list = ssl_create_cipher_list(
- ctx->method, &ctx->cipher_list, &ctx->cipher_list_by_id, str);
- if (cipher_list == NULL) {
- return 0;
- }
-
- /* |ssl_create_cipher_list| may succeed but return an empty cipher list. */
- if (sk_SSL_CIPHER_num(cipher_list) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHER_MATCH);
- return 0;
- }
-
- return 1;
- }
-
- int SSL_CTX_set_cipher_list_tls10(SSL_CTX *ctx, const char *str) {
- STACK_OF(SSL_CIPHER) *cipher_list = ssl_create_cipher_list(
- ctx->method, &ctx->cipher_list_tls10, NULL, str);
- if (cipher_list == NULL) {
- return 0;
- }
-
- /* |ssl_create_cipher_list| may succeed but return an empty cipher list. */
- if (sk_SSL_CIPHER_num(cipher_list) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHER_MATCH);
- return 0;
- }
-
- return 1;
- }
-
- int SSL_CTX_set_cipher_list_tls11(SSL_CTX *ctx, const char *str) {
- STACK_OF(SSL_CIPHER) *cipher_list = ssl_create_cipher_list(
- ctx->method, &ctx->cipher_list_tls11, NULL, str);
- if (cipher_list == NULL) {
- return 0;
- }
-
- /* |ssl_create_cipher_list| may succeed but return an empty cipher list. */
- if (sk_SSL_CIPHER_num(cipher_list) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHER_MATCH);
- return 0;
- }
-
- return 1;
- }
-
- int SSL_set_cipher_list(SSL *ssl, const char *str) {
- STACK_OF(SSL_CIPHER) *cipher_list = ssl_create_cipher_list(
- ssl->ctx->method, &ssl->cipher_list, &ssl->cipher_list_by_id, str);
- if (cipher_list == NULL) {
- return 0;
- }
-
- /* |ssl_create_cipher_list| may succeed but return an empty cipher list. */
- if (sk_SSL_CIPHER_num(cipher_list) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHER_MATCH);
- return 0;
- }
-
- return 1;
- }
-
- STACK_OF(SSL_CIPHER) *
- ssl_parse_client_cipher_list(const struct ssl_early_callback_ctx *ctx) {
- CBS cipher_suites;
- CBS_init(&cipher_suites, ctx->cipher_suites, ctx->cipher_suites_len);
-
- STACK_OF(SSL_CIPHER) *sk = sk_SSL_CIPHER_new_null();
- if (sk == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- while (CBS_len(&cipher_suites) > 0) {
- uint16_t cipher_suite;
-
- if (!CBS_get_u16(&cipher_suites, &cipher_suite)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
- goto err;
- }
-
- const SSL_CIPHER *c = SSL_get_cipher_by_value(cipher_suite);
- if (c != NULL && !sk_SSL_CIPHER_push(sk, c)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
-
- return sk;
-
- err:
- sk_SSL_CIPHER_free(sk);
- return NULL;
- }
-
- const char *SSL_get_servername(const SSL *ssl, const int type) {
- if (type != TLSEXT_NAMETYPE_host_name) {
- return NULL;
- }
-
- /* Historically, |SSL_get_servername| was also the configuration getter
- * corresponding to |SSL_set_tlsext_host_name|. */
- if (ssl->tlsext_hostname != NULL) {
- return ssl->tlsext_hostname;
- }
-
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL) {
- return NULL;
- }
- return session->tlsext_hostname;
- }
-
- int SSL_get_servername_type(const SSL *ssl) {
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL || session->tlsext_hostname == NULL) {
- return -1;
- }
- return TLSEXT_NAMETYPE_host_name;
- }
-
- void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx) {
- ctx->signed_cert_timestamps_enabled = 1;
- }
-
- int SSL_enable_signed_cert_timestamps(SSL *ssl) {
- ssl->signed_cert_timestamps_enabled = 1;
- return 1;
- }
-
- void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx) {
- ctx->ocsp_stapling_enabled = 1;
- }
-
- int SSL_enable_ocsp_stapling(SSL *ssl) {
- ssl->ocsp_stapling_enabled = 1;
- return 1;
- }
-
- void SSL_get0_signed_cert_timestamp_list(const SSL *ssl, const uint8_t **out,
- size_t *out_len) {
- SSL_SESSION *session = SSL_get_session(ssl);
-
- *out_len = 0;
- *out = NULL;
- if (ssl->server || !session || !session->tlsext_signed_cert_timestamp_list) {
- return;
- }
-
- *out = session->tlsext_signed_cert_timestamp_list;
- *out_len = session->tlsext_signed_cert_timestamp_list_length;
- }
-
- void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
- size_t *out_len) {
- SSL_SESSION *session = SSL_get_session(ssl);
-
- *out_len = 0;
- *out = NULL;
- if (ssl->server || !session || !session->ocsp_response) {
- return;
- }
- *out = session->ocsp_response;
- *out_len = session->ocsp_response_length;
- }
-
- int SSL_CTX_set_signed_cert_timestamp_list(SSL_CTX *ctx, const uint8_t *list,
- size_t list_len) {
- OPENSSL_free(ctx->signed_cert_timestamp_list);
- ctx->signed_cert_timestamp_list_length = 0;
-
- ctx->signed_cert_timestamp_list = BUF_memdup(list, list_len);
- if (ctx->signed_cert_timestamp_list == NULL) {
- return 0;
- }
- ctx->signed_cert_timestamp_list_length = list_len;
-
- return 1;
- }
-
- int SSL_CTX_set_ocsp_response(SSL_CTX *ctx, const uint8_t *response,
- size_t response_len) {
- OPENSSL_free(ctx->ocsp_response);
- ctx->ocsp_response_length = 0;
-
- ctx->ocsp_response = BUF_memdup(response, response_len);
- if (ctx->ocsp_response == NULL) {
- return 0;
- }
- ctx->ocsp_response_length = response_len;
-
- return 1;
- }
-
- int SSL_set_tlsext_host_name(SSL *ssl, const char *name) {
- OPENSSL_free(ssl->tlsext_hostname);
- ssl->tlsext_hostname = NULL;
-
- if (name == NULL) {
- return 1;
- }
-
- size_t len = strlen(name);
- if (len == 0 || len > TLSEXT_MAXLEN_host_name) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL3_EXT_INVALID_SERVERNAME);
- return 0;
- }
- ssl->tlsext_hostname = BUF_strdup(name);
- if (ssl->tlsext_hostname == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- return 1;
- }
-
- int SSL_CTX_set_tlsext_servername_callback(
- SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg)) {
- ctx->tlsext_servername_callback = callback;
- return 1;
- }
-
- int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg) {
- ctx->tlsext_servername_arg = arg;
- return 1;
- }
-
- int SSL_select_next_proto(uint8_t **out, uint8_t *out_len,
- const uint8_t *server, unsigned server_len,
- const uint8_t *client, unsigned client_len) {
- unsigned int i, j;
- const uint8_t *result;
- int status = OPENSSL_NPN_UNSUPPORTED;
-
- /* For each protocol in server preference order, see if we support it. */
- for (i = 0; i < server_len;) {
- for (j = 0; j < client_len;) {
- if (server[i] == client[j] &&
- memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
- /* We found a match */
- result = &server[i];
- status = OPENSSL_NPN_NEGOTIATED;
- goto found;
- }
- j += client[j];
- j++;
- }
- i += server[i];
- i++;
- }
-
- /* There's no overlap between our protocols and the server's list. */
- result = client;
- status = OPENSSL_NPN_NO_OVERLAP;
-
- found:
- *out = (uint8_t *)result + 1;
- *out_len = result[0];
- return status;
- }
-
- void SSL_get0_next_proto_negotiated(const SSL *ssl, const uint8_t **out_data,
- unsigned *out_len) {
- *out_data = ssl->s3->next_proto_negotiated;
- if (*out_data == NULL) {
- *out_len = 0;
- } else {
- *out_len = ssl->s3->next_proto_negotiated_len;
- }
- }
-
- void SSL_CTX_set_next_protos_advertised_cb(
- SSL_CTX *ctx,
- int (*cb)(SSL *ssl, const uint8_t **out, unsigned *out_len, void *arg),
- void *arg) {
- ctx->next_protos_advertised_cb = cb;
- ctx->next_protos_advertised_cb_arg = arg;
- }
-
- void SSL_CTX_set_next_proto_select_cb(
- SSL_CTX *ctx, int (*cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
- const uint8_t *in, unsigned in_len, void *arg),
- void *arg) {
- ctx->next_proto_select_cb = cb;
- ctx->next_proto_select_cb_arg = arg;
- }
-
- int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
- unsigned protos_len) {
- OPENSSL_free(ctx->alpn_client_proto_list);
- ctx->alpn_client_proto_list = BUF_memdup(protos, protos_len);
- if (!ctx->alpn_client_proto_list) {
- return 1;
- }
- ctx->alpn_client_proto_list_len = protos_len;
-
- return 0;
- }
-
- int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos, unsigned protos_len) {
- OPENSSL_free(ssl->alpn_client_proto_list);
- ssl->alpn_client_proto_list = BUF_memdup(protos, protos_len);
- if (!ssl->alpn_client_proto_list) {
- return 1;
- }
- ssl->alpn_client_proto_list_len = protos_len;
-
- return 0;
- }
-
- void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
- int (*cb)(SSL *ssl, const uint8_t **out,
- uint8_t *out_len, const uint8_t *in,
- unsigned in_len, void *arg),
- void *arg) {
- ctx->alpn_select_cb = cb;
- ctx->alpn_select_cb_arg = arg;
- }
-
- void SSL_get0_alpn_selected(const SSL *ssl, const uint8_t **out_data,
- unsigned *out_len) {
- *out_data = NULL;
- if (ssl->s3) {
- *out_data = ssl->s3->alpn_selected;
- }
- if (*out_data == NULL) {
- *out_len = 0;
- } else {
- *out_len = ssl->s3->alpn_selected_len;
- }
- }
-
-
- int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx) {
- ctx->tlsext_channel_id_enabled = 1;
- return 1;
- }
-
- int SSL_enable_tls_channel_id(SSL *ssl) {
- ssl->tlsext_channel_id_enabled = 1;
- return 1;
- }
-
- static int is_p256_key(EVP_PKEY *private_key) {
- const EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(private_key);
- return ec_key != NULL &&
- EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key)) ==
- NID_X9_62_prime256v1;
- }
-
- int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx, EVP_PKEY *private_key) {
- if (!is_p256_key(private_key)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_NOT_P256);
- return 0;
- }
-
- EVP_PKEY_free(ctx->tlsext_channel_id_private);
- EVP_PKEY_up_ref(private_key);
- ctx->tlsext_channel_id_private = private_key;
- ctx->tlsext_channel_id_enabled = 1;
-
- return 1;
- }
-
- int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key) {
- if (!is_p256_key(private_key)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_NOT_P256);
- return 0;
- }
-
- EVP_PKEY_free(ssl->tlsext_channel_id_private);
- EVP_PKEY_up_ref(private_key);
- ssl->tlsext_channel_id_private = private_key;
- ssl->tlsext_channel_id_enabled = 1;
-
- return 1;
- }
-
- size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out, size_t max_out) {
- if (!ssl->s3->tlsext_channel_id_valid) {
- return 0;
- }
- memcpy(out, ssl->s3->tlsext_channel_id, (max_out < 64) ? max_out : 64);
- return 64;
- }
-
- void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
- int (*cb)(X509_STORE_CTX *store_ctx,
- void *arg),
- void *arg) {
- ctx->app_verify_callback = cb;
- ctx->app_verify_arg = arg;
- }
-
- void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
- int (*cb)(int, X509_STORE_CTX *)) {
- ctx->verify_mode = mode;
- ctx->default_verify_callback = cb;
- }
-
- void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) {
- X509_VERIFY_PARAM_set_depth(ctx->param, depth);
- }
-
- void SSL_CTX_set_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, void *arg),
- void *arg) {
- ssl_cert_set_cert_cb(ctx->cert, cb, arg);
- }
-
- void SSL_set_cert_cb(SSL *ssl, int (*cb)(SSL *ssl, void *arg), void *arg) {
- ssl_cert_set_cert_cb(ssl->cert, cb, arg);
- }
-
- size_t SSL_get0_certificate_types(SSL *ssl, const uint8_t **out_types) {
- if (ssl->server) {
- *out_types = NULL;
- return 0;
- }
- *out_types = ssl->s3->tmp.certificate_types;
- return ssl->s3->tmp.num_certificate_types;
- }
-
- void ssl_get_compatible_server_ciphers(SSL *ssl, uint32_t *out_mask_k,
- uint32_t *out_mask_a) {
- uint32_t mask_k = 0;
- uint32_t mask_a = 0;
-
- if (ssl->cert->x509 != NULL && ssl_has_private_key(ssl)) {
- int type = ssl_private_key_type(ssl);
- if (type == NID_rsaEncryption) {
- mask_k |= SSL_kRSA;
- mask_a |= SSL_aRSA;
- } else if (ssl_is_ecdsa_key_type(type)) {
- /* An ECC certificate may be usable for ECDSA cipher suites depending on
- * the key usage extension and on the client's group preferences. */
- X509 *x = ssl->cert->x509;
- /* This call populates extension flags (ex_flags). */
- X509_check_purpose(x, -1, 0);
- int ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE)
- ? (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)
- : 1;
- if (ecdsa_ok && tls1_check_ec_cert(ssl, x)) {
- mask_a |= SSL_aECDSA;
- }
- }
- }
-
- if (ssl->cert->dh_tmp != NULL || ssl->cert->dh_tmp_cb != NULL) {
- mask_k |= SSL_kDHE;
- }
-
- /* Check for a shared group to consider ECDHE ciphers. */
- uint16_t unused;
- if (tls1_get_shared_group(ssl, &unused)) {
- mask_k |= SSL_kECDHE;
- }
-
- /* CECPQ1 ciphers are always acceptable if supported by both sides. */
- mask_k |= SSL_kCECPQ1;
-
- /* PSK requires a server callback. */
- if (ssl->psk_server_callback != NULL) {
- mask_k |= SSL_kPSK;
- mask_a |= SSL_aPSK;
- }
-
- *out_mask_k = mask_k;
- *out_mask_a = mask_a;
- }
-
- void ssl_update_cache(SSL *ssl, int mode) {
- SSL_CTX *ctx = ssl->initial_ctx;
- /* Never cache sessions with empty session IDs. */
- if (ssl->s3->established_session->session_id_length == 0 ||
- (ctx->session_cache_mode & mode) != mode) {
- return;
- }
-
- /* Clients never use the internal session cache. */
- int use_internal_cache = ssl->server && !(ctx->session_cache_mode &
- SSL_SESS_CACHE_NO_INTERNAL_STORE);
-
- /* A client may see new sessions on abbreviated handshakes if the server
- * decides to renew the ticket. Once the handshake is completed, it should be
- * inserted into the cache. */
- if (ssl->s3->established_session != ssl->session ||
- (!ssl->server && ssl->tlsext_ticket_expected)) {
- if (use_internal_cache) {
- SSL_CTX_add_session(ctx, ssl->s3->established_session);
- }
- if (ctx->new_session_cb != NULL) {
- SSL_SESSION_up_ref(ssl->s3->established_session);
- if (!ctx->new_session_cb(ssl, ssl->s3->established_session)) {
- /* |new_session_cb|'s return value signals whether it took ownership. */
- SSL_SESSION_free(ssl->s3->established_session);
- }
- }
- }
-
- if (use_internal_cache &&
- !(ctx->session_cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR)) {
- /* Automatically flush the internal session cache every 255 connections. */
- int flush_cache = 0;
- CRYPTO_MUTEX_lock_write(&ctx->lock);
- ctx->handshakes_since_cache_flush++;
- if (ctx->handshakes_since_cache_flush >= 255) {
- flush_cache = 1;
- ctx->handshakes_since_cache_flush = 0;
- }
- CRYPTO_MUTEX_unlock_write(&ctx->lock);
-
- if (flush_cache) {
- struct timeval now;
- ssl_get_current_time(ssl, &now);
- SSL_CTX_flush_sessions(ctx, (long)now.tv_sec);
- }
- }
- }
-
- static const char *ssl_get_version(int version) {
- switch (version) {
- case TLS1_3_VERSION:
- return "TLSv1.3";
-
- case TLS1_2_VERSION:
- return "TLSv1.2";
-
- case TLS1_1_VERSION:
- return "TLSv1.1";
-
- case TLS1_VERSION:
- return "TLSv1";
-
- case SSL3_VERSION:
- return "SSLv3";
-
- case DTLS1_VERSION:
- return "DTLSv1";
-
- case DTLS1_2_VERSION:
- return "DTLSv1.2";
-
- default:
- return "unknown";
- }
- }
-
- const char *SSL_get_version(const SSL *ssl) {
- return ssl_get_version(ssl->version);
- }
-
- const char *SSL_SESSION_get_version(const SSL_SESSION *session) {
- return ssl_get_version(session->ssl_version);
- }
-
- X509 *SSL_get_certificate(const SSL *ssl) {
- if (ssl->cert != NULL) {
- return ssl->cert->x509;
- }
-
- return NULL;
- }
-
- EVP_PKEY *SSL_get_privatekey(const SSL *ssl) {
- if (ssl->cert != NULL) {
- return ssl->cert->privatekey;
- }
-
- return NULL;
- }
-
- X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) {
- if (ctx->cert != NULL) {
- return ctx->cert->x509;
- }
-
- return NULL;
- }
-
- EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) {
- if (ctx->cert != NULL) {
- return ctx->cert->privatekey;
- }
-
- return NULL;
- }
-
- const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl) {
- if (ssl->s3->aead_write_ctx == NULL) {
- return NULL;
- }
- return ssl->s3->aead_write_ctx->cipher;
- }
-
- int SSL_session_reused(const SSL *ssl) {
- return ssl->s3->session_reused;
- }
-
- const COMP_METHOD *SSL_get_current_compression(SSL *ssl) { return NULL; }
-
- const COMP_METHOD *SSL_get_current_expansion(SSL *ssl) { return NULL; }
-
- int *SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **out_key) { return 0; }
-
- int ssl_is_wbio_buffered(const SSL *ssl) {
- return ssl->bbio != NULL;
- }
-
- int ssl_init_wbio_buffer(SSL *ssl) {
- if (ssl->bbio != NULL) {
- /* Already buffered. */
- assert(ssl->bbio == ssl->wbio);
- return 1;
- }
-
- BIO *bbio = BIO_new(BIO_f_buffer());
- if (bbio == NULL ||
- !BIO_set_read_buffer_size(bbio, 1)) {
- BIO_free(bbio);
- return 0;
- }
-
- ssl->bbio = bbio;
- ssl->wbio = BIO_push(bbio, ssl->wbio);
- return 1;
- }
-
- void ssl_free_wbio_buffer(SSL *ssl) {
- if (ssl->bbio == NULL) {
- return;
- }
-
- assert(ssl->bbio == ssl->wbio);
-
- ssl->wbio = BIO_pop(ssl->wbio);
- BIO_free(ssl->bbio);
- ssl->bbio = NULL;
- }
-
- void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) {
- ctx->quiet_shutdown = (mode != 0);
- }
-
- int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) {
- return ctx->quiet_shutdown;
- }
-
- void SSL_set_quiet_shutdown(SSL *ssl, int mode) {
- ssl->quiet_shutdown = (mode != 0);
- }
-
- int SSL_get_quiet_shutdown(const SSL *ssl) { return ssl->quiet_shutdown; }
-
- void SSL_set_shutdown(SSL *ssl, int mode) {
- /* It is an error to clear any bits that have already been set. (We can't try
- * to get a second close_notify or send two.) */
- assert((SSL_get_shutdown(ssl) & mode) == SSL_get_shutdown(ssl));
-
- if (mode & SSL_RECEIVED_SHUTDOWN &&
- ssl->s3->recv_shutdown == ssl_shutdown_none) {
- ssl->s3->recv_shutdown = ssl_shutdown_close_notify;
- }
-
- if (mode & SSL_SENT_SHUTDOWN &&
- ssl->s3->send_shutdown == ssl_shutdown_none) {
- ssl->s3->send_shutdown = ssl_shutdown_close_notify;
- }
- }
-
- int SSL_get_shutdown(const SSL *ssl) {
- int ret = 0;
- if (ssl->s3->recv_shutdown != ssl_shutdown_none) {
- /* Historically, OpenSSL set |SSL_RECEIVED_SHUTDOWN| on both close_notify
- * and fatal alert. */
- ret |= SSL_RECEIVED_SHUTDOWN;
- }
- if (ssl->s3->send_shutdown == ssl_shutdown_close_notify) {
- /* Historically, OpenSSL set |SSL_SENT_SHUTDOWN| on only close_notify. */
- ret |= SSL_SENT_SHUTDOWN;
- }
- return ret;
- }
-
- int SSL_version(const SSL *ssl) { return ssl->version; }
-
- SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) { return ssl->ctx; }
-
- SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) {
- if (ssl->ctx == ctx) {
- return ssl->ctx;
- }
-
- if (ctx == NULL) {
- ctx = ssl->initial_ctx;
- }
-
- ssl_cert_free(ssl->cert);
- ssl->cert = ssl_cert_dup(ctx->cert);
-
- CRYPTO_refcount_inc(&ctx->references);
- SSL_CTX_free(ssl->ctx); /* decrement reference count */
- ssl->ctx = ctx;
-
- ssl->sid_ctx_length = ctx->sid_ctx_length;
- assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
- memcpy(ssl->sid_ctx, ctx->sid_ctx, sizeof(ssl->sid_ctx));
-
- return ssl->ctx;
- }
-
- int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) {
- return X509_STORE_set_default_paths(ctx->cert_store);
- }
-
- int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *ca_file,
- const char *ca_dir) {
- return X509_STORE_load_locations(ctx->cert_store, ca_file, ca_dir);
- }
-
- void SSL_set_info_callback(SSL *ssl,
- void (*cb)(const SSL *ssl, int type, int value)) {
- ssl->info_callback = cb;
- }
-
- void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type,
- int value) {
- return ssl->info_callback;
- }
-
- int SSL_state(const SSL *ssl) { return ssl->state; }
-
- void SSL_set_state(SSL *ssl, int state) { }
-
- char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len) {
- if (len <= 0) {
- return NULL;
- }
- buf[0] = '\0';
- return buf;
- }
-
- void SSL_set_verify_result(SSL *ssl, long result) {
- if (result != X509_V_OK) {
- abort();
- }
- }
-
- long SSL_get_verify_result(const SSL *ssl) {
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL) {
- return X509_V_ERR_INVALID_CALL;
- }
- return session->verify_result;
- }
-
- int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) {
- int index;
- if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl, &index, argl, argp,
- dup_func, free_func)) {
- return -1;
- }
- return index;
- }
-
- int SSL_set_ex_data(SSL *ssl, int idx, void *arg) {
- return CRYPTO_set_ex_data(&ssl->ex_data, idx, arg);
- }
-
- void *SSL_get_ex_data(const SSL *ssl, int idx) {
- return CRYPTO_get_ex_data(&ssl->ex_data, idx);
- }
-
- int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
- CRYPTO_EX_dup *dup_func,
- CRYPTO_EX_free *free_func) {
- int index;
- if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl_ctx, &index, argl, argp,
- dup_func, free_func)) {
- return -1;
- }
- return index;
- }
-
- int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *arg) {
- return CRYPTO_set_ex_data(&ctx->ex_data, idx, arg);
- }
-
- void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx) {
- return CRYPTO_get_ex_data(&ctx->ex_data, idx);
- }
-
- X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) {
- return ctx->cert_store;
- }
-
- void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) {
- X509_STORE_free(ctx->cert_store);
- ctx->cert_store = store;
- }
-
- int SSL_want(const SSL *ssl) { return ssl->rwstate; }
-
- void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
- RSA *(*cb)(SSL *ssl, int is_export,
- int keylength)) {
- }
-
- void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
- int keylength)) {
- }
-
- void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
- DH *(*callback)(SSL *ssl, int is_export,
- int keylength)) {
- ctx->cert->dh_tmp_cb = callback;
- }
-
- void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*callback)(SSL *ssl, int is_export,
- int keylength)) {
- ssl->cert->dh_tmp_cb = callback;
- }
-
- unsigned SSL_get_dhe_group_size(const SSL *ssl) {
- /* TODO(davidben): This checks the wrong session if there is a renegotiation in
- * progress. */
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL ||
- session->cipher == NULL ||
- !SSL_CIPHER_is_DHE(session->cipher)) {
- return 0;
- }
-
- return session->key_exchange_info;
- }
-
- int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) {
- if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
- return 0;
- }
-
- OPENSSL_free(ctx->psk_identity_hint);
-
- if (identity_hint != NULL) {
- ctx->psk_identity_hint = BUF_strdup(identity_hint);
- if (ctx->psk_identity_hint == NULL) {
- return 0;
- }
- } else {
- ctx->psk_identity_hint = NULL;
- }
-
- return 1;
- }
-
- int SSL_use_psk_identity_hint(SSL *ssl, const char *identity_hint) {
- if (ssl == NULL) {
- return 0;
- }
-
- if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
- return 0;
- }
-
- /* Clear currently configured hint, if any. */
- OPENSSL_free(ssl->psk_identity_hint);
- ssl->psk_identity_hint = NULL;
-
- if (identity_hint != NULL) {
- ssl->psk_identity_hint = BUF_strdup(identity_hint);
- if (ssl->psk_identity_hint == NULL) {
- return 0;
- }
- }
-
- return 1;
- }
-
- const char *SSL_get_psk_identity_hint(const SSL *ssl) {
- if (ssl == NULL) {
- return NULL;
- }
- return ssl->psk_identity_hint;
- }
-
- const char *SSL_get_psk_identity(const SSL *ssl) {
- if (ssl == NULL) {
- return NULL;
- }
- SSL_SESSION *session = SSL_get_session(ssl);
- if (session == NULL) {
- return NULL;
- }
- return session->psk_identity;
- }
-
- void SSL_set_psk_client_callback(
- SSL *ssl, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
- unsigned max_identity_len, uint8_t *psk,
- unsigned max_psk_len)) {
- ssl->psk_client_callback = cb;
- }
-
- void SSL_CTX_set_psk_client_callback(
- SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
- unsigned max_identity_len, uint8_t *psk,
- unsigned max_psk_len)) {
- ctx->psk_client_callback = cb;
- }
-
- void SSL_set_psk_server_callback(
- SSL *ssl, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
- unsigned max_psk_len)) {
- ssl->psk_server_callback = cb;
- }
-
- void SSL_CTX_set_psk_server_callback(
- SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *identity,
- uint8_t *psk, unsigned max_psk_len)) {
- ctx->psk_server_callback = cb;
- }
-
- void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
- void (*cb)(int write_p, int version,
- int content_type, const void *buf,
- size_t len, SSL *ssl, void *arg)) {
- ctx->msg_callback = cb;
- }
-
- void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg) {
- ctx->msg_callback_arg = arg;
- }
-
- void SSL_set_msg_callback(SSL *ssl,
- void (*cb)(int write_p, int version, int content_type,
- const void *buf, size_t len, SSL *ssl,
- void *arg)) {
- ssl->msg_callback = cb;
- }
-
- void SSL_set_msg_callback_arg(SSL *ssl, void *arg) {
- ssl->msg_callback_arg = arg;
- }
-
- void SSL_CTX_set_keylog_callback(SSL_CTX *ctx,
- void (*cb)(const SSL *ssl, const char *line)) {
- ctx->keylog_callback = cb;
- }
-
- void (*SSL_CTX_get_keylog_callback(const SSL_CTX *ctx))(const SSL *ssl,
- const char *line) {
- return ctx->keylog_callback;
- }
-
- void SSL_CTX_set_current_time_cb(SSL_CTX *ctx,
- void (*cb)(const SSL *ssl,
- struct timeval *out_clock)) {
- ctx->current_time_cb = cb;
- }
-
- static int cbb_add_hex(CBB *cbb, const uint8_t *in, size_t in_len) {
- static const char hextable[] = "0123456789abcdef";
- uint8_t *out;
-
- if (!CBB_add_space(cbb, &out, in_len * 2)) {
- return 0;
- }
-
- for (size_t i = 0; i < in_len; i++) {
- *(out++) = (uint8_t)hextable[in[i] >> 4];
- *(out++) = (uint8_t)hextable[in[i] & 0xf];
- }
-
- return 1;
- }
-
- int ssl_log_rsa_client_key_exchange(const SSL *ssl,
- const uint8_t *encrypted_premaster,
- size_t encrypted_premaster_len,
- const uint8_t *premaster,
- size_t premaster_len) {
- if (ssl->ctx->keylog_callback == NULL) {
- return 1;
- }
-
- if (encrypted_premaster_len < 8) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- CBB cbb;
- uint8_t *out;
- size_t out_len;
- if (!CBB_init(&cbb, 4 + 16 + 1 + premaster_len * 2 + 1) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)"RSA ", 4) ||
- /* Only the first 8 bytes of the encrypted premaster secret are
- * logged. */
- !cbb_add_hex(&cbb, encrypted_premaster, 8) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)" ", 1) ||
- !cbb_add_hex(&cbb, premaster, premaster_len) ||
- !CBB_add_u8(&cbb, 0 /* NUL */) ||
- !CBB_finish(&cbb, &out, &out_len)) {
- CBB_cleanup(&cbb);
- return 0;
- }
-
- ssl->ctx->keylog_callback(ssl, (const char *)out);
- OPENSSL_free(out);
- return 1;
- }
-
- int ssl_log_secret(const SSL *ssl, const char *label, const uint8_t *secret,
- size_t secret_len) {
- if (ssl->ctx->keylog_callback == NULL) {
- return 1;
- }
-
- CBB cbb;
- uint8_t *out;
- size_t out_len;
- if (!CBB_init(&cbb, strlen(label) + 1 + SSL3_RANDOM_SIZE * 2 + 1 +
- secret_len * 2 + 1) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)label, strlen(label)) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)" ", 1) ||
- !cbb_add_hex(&cbb, ssl->s3->client_random, SSL3_RANDOM_SIZE) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)" ", 1) ||
- !cbb_add_hex(&cbb, secret, secret_len) ||
- !CBB_add_u8(&cbb, 0 /* NUL */) ||
- !CBB_finish(&cbb, &out, &out_len)) {
- CBB_cleanup(&cbb);
- return 0;
- }
-
- ssl->ctx->keylog_callback(ssl, (const char *)out);
- OPENSSL_free(out);
- return 1;
- }
-
- int SSL_is_init_finished(const SSL *ssl) {
- return ssl->state == SSL_ST_OK;
- }
-
- int SSL_in_init(const SSL *ssl) {
- return (ssl->state & SSL_ST_INIT) != 0;
- }
-
- int SSL_in_false_start(const SSL *ssl) {
- return ssl->s3->tmp.in_false_start;
- }
-
- int SSL_cutthrough_complete(const SSL *ssl) {
- return SSL_in_false_start(ssl);
- }
-
- void SSL_get_structure_sizes(size_t *ssl_size, size_t *ssl_ctx_size,
- size_t *ssl_session_size) {
- *ssl_size = sizeof(SSL);
- *ssl_ctx_size = sizeof(SSL_CTX);
- *ssl_session_size = sizeof(SSL_SESSION);
- }
-
- int ssl3_can_false_start(const SSL *ssl) {
- const SSL_CIPHER *const cipher = SSL_get_current_cipher(ssl);
-
- /* False Start only for TLS 1.2 with an ECDHE+AEAD cipher and ALPN or NPN. */
- return !SSL_is_dtls(ssl) &&
- SSL_version(ssl) == TLS1_2_VERSION &&
- (ssl->s3->alpn_selected || ssl->s3->next_proto_neg_seen) &&
- cipher != NULL &&
- (cipher->algorithm_mkey == SSL_kECDHE ||
- cipher->algorithm_mkey == SSL_kCECPQ1) &&
- cipher->algorithm_mac == SSL_AEAD;
- }
-
- const SSL3_ENC_METHOD *ssl3_get_enc_method(uint16_t version) {
- switch (version) {
- case SSL3_VERSION:
- return &SSLv3_enc_data;
-
- case TLS1_VERSION:
- case TLS1_1_VERSION:
- case TLS1_2_VERSION:
- case TLS1_3_VERSION:
- return &TLSv1_enc_data;
-
- default:
- return NULL;
- }
- }
-
- const struct {
- uint16_t version;
- uint32_t flag;
- } kVersions[] = {
- {SSL3_VERSION, SSL_OP_NO_SSLv3},
- {TLS1_VERSION, SSL_OP_NO_TLSv1},
- {TLS1_1_VERSION, SSL_OP_NO_TLSv1_1},
- {TLS1_2_VERSION, SSL_OP_NO_TLSv1_2},
- {TLS1_3_VERSION, SSL_OP_NO_TLSv1_3},
- };
-
- static const size_t kVersionsLen = OPENSSL_ARRAY_SIZE(kVersions);
-
- int ssl_get_full_version_range(const SSL *ssl, uint16_t *out_min_version,
- uint16_t *out_fallback_version,
- uint16_t *out_max_version) {
- /* For historical reasons, |SSL_OP_NO_DTLSv1| aliases |SSL_OP_NO_TLSv1|, but
- * DTLS 1.0 should be mapped to TLS 1.1. */
- uint32_t options = ssl->options;
- if (SSL_is_dtls(ssl)) {
- options &= ~SSL_OP_NO_TLSv1_1;
- if (options & SSL_OP_NO_DTLSv1) {
- options |= SSL_OP_NO_TLSv1_1;
- }
- }
-
- uint16_t min_version = ssl->min_version;
- uint16_t max_version = ssl->max_version;
-
- /* Bound the range to only those implemented in this protocol. */
- if (min_version < ssl->method->min_version) {
- min_version = ssl->method->min_version;
- }
- if (max_version > ssl->method->max_version) {
- max_version = ssl->method->max_version;
- }
-
- /* OpenSSL's API for controlling versions entails blacklisting individual
- * protocols. This has two problems. First, on the client, the protocol can
- * only express a contiguous range of versions. Second, a library consumer
- * trying to set a maximum version cannot disable protocol versions that get
- * added in a future version of the library.
- *
- * To account for both of these, OpenSSL interprets the client-side bitmask
- * as a min/max range by picking the lowest contiguous non-empty range of
- * enabled protocols. Note that this means it is impossible to set a maximum
- * version of the higest supported TLS version in a future-proof way. */
- int any_enabled = 0;
- for (size_t i = 0; i < kVersionsLen; i++) {
- /* Only look at the versions already enabled. */
- if (min_version > kVersions[i].version) {
- continue;
- }
- if (max_version < kVersions[i].version) {
- break;
- }
-
- if (!(options & kVersions[i].flag)) {
- /* The minimum version is the first enabled version. */
- if (!any_enabled) {
- any_enabled = 1;
- min_version = kVersions[i].version;
- }
- continue;
- }
-
- /* If there is a disabled version after the first enabled one, all versions
- * after it are implicitly disabled. */
- if (any_enabled) {
- max_version = kVersions[i-1].version;
- break;
- }
- }
-
- uint16_t fallback_version = max_version;
- if (ssl->fallback_version != 0 && ssl->fallback_version < fallback_version) {
- fallback_version = ssl->fallback_version;
- }
-
- if (!any_enabled || fallback_version < min_version) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
- return 0;
- }
-
- *out_min_version = min_version;
- *out_fallback_version = fallback_version;
- *out_max_version = max_version;
- return 1;
- }
-
- int ssl_get_version_range(const SSL *ssl, uint16_t *out_min_version,
- uint16_t *out_effective_max_version) {
- /* This function returns the effective maximum version and not the fallback
- * version. */
- uint16_t real_max_version_unused;
- return ssl_get_full_version_range(ssl, out_min_version,
- out_effective_max_version,
- &real_max_version_unused);
- }
-
- uint16_t ssl3_protocol_version(const SSL *ssl) {
- assert(ssl->s3->have_version);
- return ssl->method->version_from_wire(ssl->version);
- }
-
- int SSL_is_server(const SSL *ssl) { return ssl->server; }
-
- int SSL_is_dtls(const SSL *ssl) { return ssl->method->is_dtls; }
-
- void SSL_CTX_set_select_certificate_cb(
- SSL_CTX *ctx, int (*cb)(const struct ssl_early_callback_ctx *)) {
- ctx->select_certificate_cb = cb;
- }
-
- void SSL_CTX_set_dos_protection_cb(
- SSL_CTX *ctx, int (*cb)(const struct ssl_early_callback_ctx *)) {
- ctx->dos_protection_cb = cb;
- }
-
- void SSL_set_renegotiate_mode(SSL *ssl, enum ssl_renegotiate_mode_t mode) {
- ssl->renegotiate_mode = mode;
- }
-
- void SSL_set_reject_peer_renegotiations(SSL *ssl, int reject) {
- SSL_set_renegotiate_mode(
- ssl, reject ? ssl_renegotiate_never : ssl_renegotiate_freely);
- }
-
- int SSL_get_ivs(const SSL *ssl, const uint8_t **out_read_iv,
- const uint8_t **out_write_iv, size_t *out_iv_len) {
- if (ssl->s3->aead_read_ctx == NULL || ssl->s3->aead_write_ctx == NULL) {
- return 0;
- }
-
- size_t write_iv_len;
- if (!EVP_AEAD_CTX_get_iv(&ssl->s3->aead_read_ctx->ctx, out_read_iv,
- out_iv_len) ||
- !EVP_AEAD_CTX_get_iv(&ssl->s3->aead_write_ctx->ctx, out_write_iv,
- &write_iv_len) ||
- *out_iv_len != write_iv_len) {
- return 0;
- }
-
- return 1;
- }
-
- static uint64_t be_to_u64(const uint8_t in[8]) {
- return (((uint64_t)in[0]) << 56) | (((uint64_t)in[1]) << 48) |
- (((uint64_t)in[2]) << 40) | (((uint64_t)in[3]) << 32) |
- (((uint64_t)in[4]) << 24) | (((uint64_t)in[5]) << 16) |
- (((uint64_t)in[6]) << 8) | ((uint64_t)in[7]);
- }
-
- uint64_t SSL_get_read_sequence(const SSL *ssl) {
- /* TODO(davidben): Internally represent sequence numbers as uint64_t. */
- if (SSL_is_dtls(ssl)) {
- /* max_seq_num already includes the epoch. */
- assert(ssl->d1->r_epoch == (ssl->d1->bitmap.max_seq_num >> 48));
- return ssl->d1->bitmap.max_seq_num;
- }
- return be_to_u64(ssl->s3->read_sequence);
- }
-
- uint64_t SSL_get_write_sequence(const SSL *ssl) {
- uint64_t ret = be_to_u64(ssl->s3->write_sequence);
- if (SSL_is_dtls(ssl)) {
- assert((ret >> 48) == 0);
- ret |= ((uint64_t)ssl->d1->w_epoch) << 48;
- }
- return ret;
- }
-
- uint16_t SSL_get_peer_signature_algorithm(const SSL *ssl) {
- return ssl->s3->tmp.peer_signature_algorithm;
- }
-
- size_t SSL_get_client_random(const SSL *ssl, uint8_t *out, size_t max_out) {
- if (max_out == 0) {
- return sizeof(ssl->s3->client_random);
- }
- if (max_out > sizeof(ssl->s3->client_random)) {
- max_out = sizeof(ssl->s3->client_random);
- }
- memcpy(out, ssl->s3->client_random, max_out);
- return max_out;
- }
-
- size_t SSL_get_server_random(const SSL *ssl, uint8_t *out, size_t max_out) {
- if (max_out == 0) {
- return sizeof(ssl->s3->server_random);
- }
- if (max_out > sizeof(ssl->s3->server_random)) {
- max_out = sizeof(ssl->s3->server_random);
- }
- memcpy(out, ssl->s3->server_random, max_out);
- return max_out;
- }
-
- const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl) {
- if (!SSL_in_init(ssl)) {
- return NULL;
- }
- return ssl->s3->tmp.new_cipher;
- }
-
- void SSL_CTX_set_retain_only_sha256_of_client_certs(SSL_CTX *ctx, int enabled) {
- ctx->retain_only_sha256_of_client_certs = !!enabled;
- }
-
- int SSL_clear(SSL *ssl) {
- if (ssl->method == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_NO_METHOD_SPECIFIED);
- return 0;
- }
-
- /* TODO(davidben): Some state on |ssl| is reset both in |SSL_new| and
- * |SSL_clear| because it is per-connection state rather than configuration
- * state. Per-connection state should be on |ssl->s3| and |ssl->d1| so it is
- * naturally reset at the right points between |SSL_new|, |SSL_clear|, and
- * |ssl3_new|. */
-
- ssl->state = SSL_ST_INIT;
- ssl->rwstate = SSL_NOTHING;
-
- BUF_MEM_free(ssl->init_buf);
- ssl->init_buf = NULL;
- ssl->init_msg = NULL;
- ssl->init_num = 0;
-
- /* The ssl->d1->mtu is simultaneously configuration (preserved across
- * clear) and connection-specific state (gets reset).
- *
- * TODO(davidben): Avoid this. */
- unsigned mtu = 0;
- if (ssl->d1 != NULL) {
- mtu = ssl->d1->mtu;
- }
-
- ssl->method->ssl_free(ssl);
- if (!ssl->method->ssl_new(ssl)) {
- return 0;
- }
-
- if (SSL_is_dtls(ssl) && (SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
- ssl->d1->mtu = mtu;
- }
-
- ssl->client_version = ssl->version;
-
- return 1;
- }
-
- void ssl_do_info_callback(const SSL *ssl, int type, int value) {
- void (*cb)(const SSL *ssl, int type, int value) = NULL;
- if (ssl->info_callback != NULL) {
- cb = ssl->info_callback;
- } else if (ssl->ctx->info_callback != NULL) {
- cb = ssl->ctx->info_callback;
- }
-
- if (cb != NULL) {
- cb(ssl, type, value);
- }
- }
-
- void ssl_do_msg_callback(SSL *ssl, int is_write, int version, int content_type,
- const void *buf, size_t len) {
- if (ssl->msg_callback != NULL) {
- ssl->msg_callback(is_write, version, content_type, buf, len, ssl,
- ssl->msg_callback_arg);
- }
- }
-
- int SSL_CTX_sess_connect(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_connect_good(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_accept(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_accept_good(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_hits(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_misses(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_timeouts(const SSL_CTX *ctx) { return 0; }
- int SSL_CTX_sess_cache_full(const SSL_CTX *ctx) { return 0; }
-
- int SSL_num_renegotiations(const SSL *ssl) {
- return SSL_total_renegotiations(ssl);
- }
-
- int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx) { return 0; }
- int SSL_need_tmp_RSA(const SSL *ssl) { return 0; }
- int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa) { return 1; }
- int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa) { return 1; }
- void ERR_load_SSL_strings(void) {}
- void SSL_load_error_strings(void) {}
- int SSL_cache_hit(SSL *ssl) { return SSL_session_reused(ssl); }
-
- int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key) {
- if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
- return SSL_CTX_set1_curves(ctx, &nid, 1);
- }
-
- int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key) {
- if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
- return SSL_set1_curves(ssl, &nid, 1);
- }
-
- void ssl_get_current_time(const SSL *ssl, struct timeval *out_clock) {
- if (ssl->ctx->current_time_cb != NULL) {
- ssl->ctx->current_time_cb(ssl, out_clock);
- return;
- }
-
- #if defined(OPENSSL_WINDOWS)
- struct _timeb time;
- _ftime(&time);
- out_clock->tv_sec = time.time;
- out_clock->tv_usec = time.millitm * 1000;
- #else
- gettimeofday(out_clock, NULL);
- #endif
- }
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