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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) 1998-2007 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 <assert.h>
- #include <stdio.h>
- #include <string.h>
-
- #include <openssl/bytestring.h>
- #include <openssl/dh.h>
- #include <openssl/err.h>
- #include <openssl/lhash.h>
- #include <openssl/mem.h>
- #include <openssl/obj.h>
- #include <openssl/rand.h>
- #include <openssl/x509v3.h>
-
- #include "internal.h"
- #include "../crypto/internal.h"
-
-
- /* 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);
-
- static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl = CRYPTO_EX_DATA_CLASS_INIT;
- static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl_ctx = CRYPTO_EX_DATA_CLASS_INIT;
-
- int SSL_clear(SSL *s) {
- if (s->method == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_clear, SSL_R_NO_METHOD_SPECIFIED);
- return 0;
- }
-
- if (ssl_clear_bad_session(s)) {
- SSL_SESSION_free(s->session);
- s->session = NULL;
- }
-
- s->hit = 0;
- s->shutdown = 0;
-
- if (s->renegotiate) {
- OPENSSL_PUT_ERROR(SSL, SSL_clear, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- /* SSL_clear may be called before or after the |s| is initialized in either
- * accept or connect state. In the latter case, SSL_clear should preserve the
- * half and reset |s->state| accordingly. */
- if (s->handshake_func != NULL) {
- if (s->server) {
- SSL_set_accept_state(s);
- } else {
- SSL_set_connect_state(s);
- }
- } else {
- assert(s->state == 0);
- }
-
- /* TODO(davidben): Some state on |s| 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 |s->s3| and |s->d1| so it is
- * naturally reset at the right points between |SSL_new|, |SSL_clear|, and
- * |ssl3_new|. */
-
- s->rwstate = SSL_NOTHING;
- s->rstate = SSL_ST_READ_HEADER;
-
- if (s->init_buf != NULL) {
- BUF_MEM_free(s->init_buf);
- s->init_buf = NULL;
- }
-
- s->packet = NULL;
- s->packet_length = 0;
-
- ssl_clear_cipher_ctx(s);
-
- if (s->next_proto_negotiated) {
- OPENSSL_free(s->next_proto_negotiated);
- s->next_proto_negotiated = NULL;
- s->next_proto_negotiated_len = 0;
- }
-
- /* The s->d1->mtu is simultaneously configuration (preserved across
- * clear) and connection-specific state (gets reset).
- *
- * TODO(davidben): Avoid this. */
- unsigned mtu = 0;
- if (s->d1 != NULL) {
- mtu = s->d1->mtu;
- }
-
- s->method->ssl_free(s);
- if (!s->method->ssl_new(s)) {
- return 0;
- }
- s->enc_method = ssl3_get_enc_method(s->version);
- assert(s->enc_method != NULL);
-
- if (SSL_IS_DTLS(s) && (SSL_get_options(s) & SSL_OP_NO_QUERY_MTU)) {
- s->d1->mtu = mtu;
- }
-
- s->client_version = s->version;
-
- return 1;
- }
-
- SSL *SSL_new(SSL_CTX *ctx) {
- SSL *s;
-
- if (ctx == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_new, SSL_R_NULL_SSL_CTX);
- return NULL;
- }
- if (ctx->method == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_new, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
- return NULL;
- }
-
- s = (SSL *)OPENSSL_malloc(sizeof(SSL));
- if (s == NULL) {
- goto err;
- }
- memset(s, 0, sizeof(SSL));
-
- s->min_version = ctx->min_version;
- s->max_version = ctx->max_version;
-
- s->options = ctx->options;
- s->mode = ctx->mode;
- s->max_cert_list = ctx->max_cert_list;
-
- s->cert = ssl_cert_dup(ctx->cert);
- if (s->cert == NULL) {
- goto err;
- }
-
- s->read_ahead = ctx->read_ahead;
- s->msg_callback = ctx->msg_callback;
- s->msg_callback_arg = ctx->msg_callback_arg;
- s->verify_mode = ctx->verify_mode;
- s->sid_ctx_length = ctx->sid_ctx_length;
- assert(s->sid_ctx_length <= sizeof s->sid_ctx);
- memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
- s->verify_callback = ctx->default_verify_callback;
- s->generate_session_id = ctx->generate_session_id;
-
- s->param = X509_VERIFY_PARAM_new();
- if (!s->param) {
- goto err;
- }
- X509_VERIFY_PARAM_inherit(s->param, ctx->param);
- s->quiet_shutdown = ctx->quiet_shutdown;
- s->max_send_fragment = ctx->max_send_fragment;
-
- CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
- s->ctx = ctx;
- s->tlsext_debug_cb = 0;
- s->tlsext_debug_arg = NULL;
- s->tlsext_ticket_expected = 0;
- CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
- s->initial_ctx = ctx;
- if (ctx->tlsext_ecpointformatlist) {
- s->tlsext_ecpointformatlist = BUF_memdup(
- ctx->tlsext_ecpointformatlist, ctx->tlsext_ecpointformatlist_length);
- if (!s->tlsext_ecpointformatlist) {
- goto err;
- }
- s->tlsext_ecpointformatlist_length = ctx->tlsext_ecpointformatlist_length;
- }
-
- if (ctx->tlsext_ellipticcurvelist) {
- s->tlsext_ellipticcurvelist =
- BUF_memdup(ctx->tlsext_ellipticcurvelist,
- ctx->tlsext_ellipticcurvelist_length * 2);
- if (!s->tlsext_ellipticcurvelist) {
- goto err;
- }
- s->tlsext_ellipticcurvelist_length = ctx->tlsext_ellipticcurvelist_length;
- }
- s->next_proto_negotiated = NULL;
-
- if (s->ctx->alpn_client_proto_list) {
- s->alpn_client_proto_list = BUF_memdup(s->ctx->alpn_client_proto_list,
- s->ctx->alpn_client_proto_list_len);
- if (s->alpn_client_proto_list == NULL) {
- goto err;
- }
- s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
- }
-
- s->verify_result = X509_V_OK;
- s->method = ctx->method;
-
- if (!s->method->ssl_new(s)) {
- goto err;
- }
- s->enc_method = ssl3_get_enc_method(s->version);
- assert(s->enc_method != NULL);
-
- s->rwstate = SSL_NOTHING;
- s->rstate = SSL_ST_READ_HEADER;
-
- CRYPTO_new_ex_data(&g_ex_data_class_ssl, s, &s->ex_data);
-
- s->psk_identity_hint = NULL;
- if (ctx->psk_identity_hint) {
- s->psk_identity_hint = BUF_strdup(ctx->psk_identity_hint);
- if (s->psk_identity_hint == NULL) {
- goto err;
- }
- }
- s->psk_client_callback = ctx->psk_client_callback;
- s->psk_server_callback = ctx->psk_server_callback;
-
- s->tlsext_channel_id_enabled = ctx->tlsext_channel_id_enabled;
- if (ctx->tlsext_channel_id_private) {
- s->tlsext_channel_id_private = EVP_PKEY_dup(ctx->tlsext_channel_id_private);
- }
-
- s->signed_cert_timestamps_enabled = s->ctx->signed_cert_timestamps_enabled;
- s->ocsp_stapling_enabled = s->ctx->ocsp_stapling_enabled;
-
- return s;
-
- err:
- if (s != NULL) {
- SSL_free(s);
- }
- OPENSSL_PUT_ERROR(SSL, SSL_new, ERR_R_MALLOC_FAILURE);
-
- return NULL;
- }
-
- int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const uint8_t *sid_ctx,
- unsigned int sid_ctx_len) {
- if (sid_ctx_len > sizeof ctx->sid_ctx) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_session_id_context,
- 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 int sid_ctx_len) {
- if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
- OPENSSL_PUT_ERROR(SSL, SSL_set_session_id_context,
- 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_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) {
- CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
- ctx->generate_session_id = cb;
- CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
- return 1;
- }
-
- int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) {
- ssl->generate_session_id = cb;
- return 1;
- }
-
- int SSL_has_matching_session_id(const SSL *ssl, const uint8_t *id,
- unsigned int id_len) {
- /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how we
- * can "construct" a session to give us the desired check - ie. to find if
- * there's a session in the hash table that would conflict with any new
- * session built out of this id/id_len and the ssl_version in use by this
- * SSL. */
- SSL_SESSION r, *p;
-
- if (id_len > sizeof r.session_id) {
- return 0;
- }
-
- r.ssl_version = ssl->version;
- r.session_id_length = id_len;
- memcpy(r.session_id, id, id_len);
-
- CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
- p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
- CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
- return p != NULL;
- }
-
- int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) {
- return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
- }
-
- int SSL_set_purpose(SSL *s, int purpose) {
- return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
- }
-
- int SSL_CTX_set_trust(SSL_CTX *s, int trust) {
- return X509_VERIFY_PARAM_set_trust(s->param, trust);
- }
-
- int SSL_set_trust(SSL *s, int trust) {
- return X509_VERIFY_PARAM_set_trust(s->param, trust);
- }
-
- int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) {
- return X509_VERIFY_PARAM_set1(ctx->param, vpm);
- }
-
- int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) {
- return X509_VERIFY_PARAM_set1(ssl->param, vpm);
- }
-
- void ssl_cipher_preference_list_free(
- struct ssl_cipher_preference_list_st *cipher_list) {
- sk_SSL_CIPHER_free(cipher_list->ciphers);
- OPENSSL_free(cipher_list->in_group_flags);
- OPENSSL_free(cipher_list);
- }
-
- struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_dup(
- struct ssl_cipher_preference_list_st *cipher_list) {
- struct ssl_cipher_preference_list_st *ret = NULL;
- size_t n = sk_SSL_CIPHER_num(cipher_list->ciphers);
-
- ret = OPENSSL_malloc(sizeof(struct ssl_cipher_preference_list_st));
- if (!ret) {
- goto err;
- }
-
- ret->ciphers = NULL;
- ret->in_group_flags = NULL;
- ret->ciphers = sk_SSL_CIPHER_dup(cipher_list->ciphers);
- if (!ret->ciphers) {
- goto err;
- }
- ret->in_group_flags = BUF_memdup(cipher_list->in_group_flags, n);
- if (!ret->in_group_flags) {
- goto err;
- }
-
- return ret;
-
- err:
- if (ret && ret->ciphers) {
- sk_SSL_CIPHER_free(ret->ciphers);
- }
- if (ret) {
- OPENSSL_free(ret);
- }
- return NULL;
- }
-
- struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_from_ciphers(
- STACK_OF(SSL_CIPHER) * ciphers) {
- struct ssl_cipher_preference_list_st *ret = NULL;
- size_t n = sk_SSL_CIPHER_num(ciphers);
-
- ret = OPENSSL_malloc(sizeof(struct ssl_cipher_preference_list_st));
- if (!ret) {
- goto err;
- }
- ret->ciphers = NULL;
- ret->in_group_flags = NULL;
- ret->ciphers = sk_SSL_CIPHER_dup(ciphers);
- if (!ret->ciphers) {
- goto err;
- }
- ret->in_group_flags = OPENSSL_malloc(n);
- if (!ret->in_group_flags) {
- goto err;
- }
- memset(ret->in_group_flags, 0, n);
- return ret;
-
- err:
- if (ret && ret->ciphers) {
- sk_SSL_CIPHER_free(ret->ciphers);
- }
- if (ret) {
- OPENSSL_free(ret);
- }
- return NULL;
- }
-
- 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 *s) { ssl_cert_clear_certs(s->cert); }
-
- void SSL_free(SSL *s) {
- if (s == NULL) {
- return;
- }
-
- if (s->param) {
- X509_VERIFY_PARAM_free(s->param);
- }
-
- CRYPTO_free_ex_data(&g_ex_data_class_ssl, s, &s->ex_data);
-
- if (s->bbio != NULL) {
- /* If the buffering BIO is in place, pop it off */
- if (s->bbio == s->wbio) {
- s->wbio = BIO_pop(s->wbio);
- }
- BIO_free(s->bbio);
- s->bbio = NULL;
- }
-
- if (s->rbio != NULL) {
- BIO_free_all(s->rbio);
- }
-
- if (s->wbio != NULL && s->wbio != s->rbio) {
- BIO_free_all(s->wbio);
- }
-
- if (s->init_buf != NULL) {
- BUF_MEM_free(s->init_buf);
- }
-
- /* add extra stuff */
- if (s->cipher_list != NULL) {
- ssl_cipher_preference_list_free(s->cipher_list);
- }
- if (s->cipher_list_by_id != NULL) {
- sk_SSL_CIPHER_free(s->cipher_list_by_id);
- }
-
- if (s->session != NULL) {
- ssl_clear_bad_session(s);
- SSL_SESSION_free(s->session);
- }
-
- ssl_clear_cipher_ctx(s);
-
- if (s->cert != NULL) {
- ssl_cert_free(s->cert);
- }
-
- if (s->tlsext_hostname) {
- OPENSSL_free(s->tlsext_hostname);
- }
- if (s->initial_ctx) {
- SSL_CTX_free(s->initial_ctx);
- }
- if (s->tlsext_ecpointformatlist) {
- OPENSSL_free(s->tlsext_ecpointformatlist);
- }
- if (s->tlsext_ellipticcurvelist) {
- OPENSSL_free(s->tlsext_ellipticcurvelist);
- }
- if (s->alpn_client_proto_list) {
- OPENSSL_free(s->alpn_client_proto_list);
- }
- if (s->tlsext_channel_id_private) {
- EVP_PKEY_free(s->tlsext_channel_id_private);
- }
- if (s->psk_identity_hint) {
- OPENSSL_free(s->psk_identity_hint);
- }
- if (s->client_CA != NULL) {
- sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
- }
- if (s->next_proto_negotiated) {
- OPENSSL_free(s->next_proto_negotiated);
- }
- if (s->srtp_profiles) {
- sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
- }
-
- if (s->method != NULL) {
- s->method->ssl_free(s);
- }
- if (s->ctx) {
- SSL_CTX_free(s->ctx);
- }
-
- OPENSSL_free(s);
- }
-
- void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) {
- /* If the output buffering BIO is still in place, remove it. */
- if (s->bbio != NULL) {
- if (s->wbio == s->bbio) {
- s->wbio = s->wbio->next_bio;
- s->bbio->next_bio = NULL;
- }
- }
-
- if (s->rbio != NULL && s->rbio != rbio) {
- BIO_free_all(s->rbio);
- }
- if (s->wbio != NULL && s->wbio != wbio && s->rbio != s->wbio) {
- BIO_free_all(s->wbio);
- }
- s->rbio = rbio;
- s->wbio = wbio;
- }
-
- BIO *SSL_get_rbio(const SSL *s) { return s->rbio; }
-
- BIO *SSL_get_wbio(const SSL *s) { return s->wbio; }
-
- int SSL_get_fd(const SSL *s) { return SSL_get_rfd(s); }
-
- int SSL_get_rfd(const SSL *s) {
- int ret = -1;
- BIO *b, *r;
-
- b = SSL_get_rbio(s);
- r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
- if (r != NULL) {
- BIO_get_fd(r, &ret);
- }
- return ret;
- }
-
- int SSL_get_wfd(const SSL *s) {
- int ret = -1;
- BIO *b, *r;
-
- b = SSL_get_wbio(s);
- r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
- if (r != NULL) {
- BIO_get_fd(r, &ret);
- }
-
- return ret;
- }
-
- int SSL_set_fd(SSL *s, int fd) {
- int ret = 0;
- BIO *bio = NULL;
-
- bio = BIO_new(BIO_s_fd());
-
- if (bio == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_set_fd, ERR_R_BUF_LIB);
- goto err;
- }
- BIO_set_fd(bio, fd, BIO_NOCLOSE);
- SSL_set_bio(s, bio, bio);
- ret = 1;
-
- err:
- return ret;
- }
-
- int SSL_set_wfd(SSL *s, int fd) {
- int ret = 0;
- BIO *bio = NULL;
-
- if (s->rbio == NULL || BIO_method_type(s->rbio) != BIO_TYPE_FD ||
- (int)BIO_get_fd(s->rbio, NULL) != fd) {
- bio = BIO_new(BIO_s_fd());
-
- if (bio == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_set_wfd, ERR_R_BUF_LIB);
- goto err;
- }
- BIO_set_fd(bio, fd, BIO_NOCLOSE);
- SSL_set_bio(s, SSL_get_rbio(s), bio);
- } else {
- SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
- }
-
- ret = 1;
-
- err:
- return ret;
- }
-
- int SSL_set_rfd(SSL *s, int fd) {
- int ret = 0;
- BIO *bio = NULL;
-
- if (s->wbio == NULL || BIO_method_type(s->wbio) != BIO_TYPE_FD ||
- (int)BIO_get_fd(s->wbio, NULL) != fd) {
- bio = BIO_new(BIO_s_fd());
-
- if (bio == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_set_rfd, ERR_R_BUF_LIB);
- goto err;
- }
- BIO_set_fd(bio, fd, BIO_NOCLOSE);
- SSL_set_bio(s, bio, SSL_get_wbio(s));
- } else {
- SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
- }
- ret = 1;
-
- err:
- return ret;
- }
-
- /* return length of latest Finished message we sent, copy to 'buf' */
- size_t SSL_get_finished(const SSL *s, void *buf, size_t count) {
- size_t ret = 0;
-
- if (s->s3 != NULL) {
- ret = s->s3->tmp.finish_md_len;
- if (count > ret) {
- count = ret;
- }
- memcpy(buf, s->s3->tmp.finish_md, count);
- }
-
- return ret;
- }
-
- /* return length of latest Finished message we expected, copy to 'buf' */
- size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) {
- size_t ret = 0;
-
- if (s->s3 != NULL) {
- ret = s->s3->tmp.peer_finish_md_len;
- if (count > ret) {
- count = ret;
- }
- memcpy(buf, s->s3->tmp.peer_finish_md, count);
- }
-
- return ret;
- }
-
- int SSL_get_verify_mode(const SSL *s) { return s->verify_mode; }
-
- int SSL_get_verify_depth(const SSL *s) {
- return X509_VERIFY_PARAM_get_depth(s->param);
- }
-
- int (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) {
- return s->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, X509_STORE_CTX *) {
- return ctx->default_verify_callback;
- }
-
- void SSL_set_verify(SSL *s, int mode,
- int (*callback)(int ok, X509_STORE_CTX *ctx)) {
- s->verify_mode = mode;
- if (callback != NULL) {
- s->verify_callback = callback;
- }
- }
-
- void SSL_set_verify_depth(SSL *s, int depth) {
- X509_VERIFY_PARAM_set_depth(s->param, depth);
- }
-
- void SSL_set_read_ahead(SSL *s, int yes) { s->read_ahead = yes; }
-
- int SSL_get_read_ahead(const SSL *s) { return s->read_ahead; }
-
- int SSL_pending(const SSL *s) {
- /* SSL_pending cannot work properly if read-ahead is enabled
- * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
- * impossible to fix since SSL_pending cannot report errors that may be
- * observed while scanning the new data. (Note that SSL_pending() is often
- * used as a boolean value, so we'd better not return -1.). */
- return s->method->ssl_pending(s);
- }
-
- X509 *SSL_get_peer_certificate(const SSL *s) {
- X509 *r;
-
- if (s == NULL || s->session == NULL) {
- r = NULL;
- } else {
- r = s->session->peer;
- }
-
- if (r == NULL) {
- return NULL;
- }
-
- return X509_up_ref(r);
- }
-
- STACK_OF(X509) * SSL_get_peer_cert_chain(const SSL *s) {
- STACK_OF(X509) * r;
-
- if (s == NULL || s->session == NULL || s->session->sess_cert == NULL) {
- r = NULL;
- } else {
- r = s->session->sess_cert->cert_chain;
- }
-
- /* If we are a client, cert_chain includes the peer's own certificate; if we
- * are a server, it does not. */
- return r;
- }
-
- /* Fix this so it checks all the valid key/cert options */
- int SSL_CTX_check_private_key(const SSL_CTX *ctx) {
- if (ctx == NULL || ctx->cert == NULL || ctx->cert->key->x509 == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_check_private_key,
- SSL_R_NO_CERTIFICATE_ASSIGNED);
- return 0;
- }
-
- if (ctx->cert->key->privatekey == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_check_private_key,
- SSL_R_NO_PRIVATE_KEY_ASSIGNED);
- return 0;
- }
-
- return X509_check_private_key(ctx->cert->key->x509,
- ctx->cert->key->privatekey);
- }
-
- /* Fix this function so that it takes an optional type parameter */
- int SSL_check_private_key(const SSL *ssl) {
- if (ssl == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_check_private_key, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- if (ssl->cert == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_check_private_key,
- SSL_R_NO_CERTIFICATE_ASSIGNED);
- return 0;
- }
-
- if (ssl->cert->key->x509 == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_check_private_key,
- SSL_R_NO_CERTIFICATE_ASSIGNED);
- return 0;
- }
-
- if (ssl->cert->key->privatekey == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_check_private_key,
- SSL_R_NO_PRIVATE_KEY_ASSIGNED);
- return 0;
- }
-
- return X509_check_private_key(ssl->cert->key->x509,
- ssl->cert->key->privatekey);
- }
-
- int SSL_accept(SSL *s) {
- if (s->handshake_func == 0) {
- /* Not properly initialized yet */
- SSL_set_accept_state(s);
- }
-
- if (s->handshake_func != s->method->ssl_accept) {
- OPENSSL_PUT_ERROR(SSL, SSL_accept, ERR_R_INTERNAL_ERROR);
- return -1;
- }
-
- return s->handshake_func(s);
- }
-
- int SSL_connect(SSL *s) {
- if (s->handshake_func == 0) {
- /* Not properly initialized yet */
- SSL_set_connect_state(s);
- }
-
- if (s->handshake_func != s->method->ssl_connect) {
- OPENSSL_PUT_ERROR(SSL, SSL_connect, ERR_R_INTERNAL_ERROR);
- return -1;
- }
-
- return s->handshake_func(s);
- }
-
- long SSL_get_default_timeout(const SSL *s) {
- return SSL_DEFAULT_SESSION_TIMEOUT;
- }
-
- int SSL_read(SSL *s, void *buf, int num) {
- if (s->handshake_func == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_read, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
- s->rwstate = SSL_NOTHING;
- return 0;
- }
-
- return s->method->ssl_read(s, buf, num);
- }
-
- int SSL_peek(SSL *s, void *buf, int num) {
- if (s->handshake_func == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_peek, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
- return 0;
- }
-
- return s->method->ssl_peek(s, buf, num);
- }
-
- int SSL_write(SSL *s, const void *buf, int num) {
- if (s->handshake_func == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_write, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- if (s->shutdown & SSL_SENT_SHUTDOWN) {
- s->rwstate = SSL_NOTHING;
- OPENSSL_PUT_ERROR(SSL, SSL_write, SSL_R_PROTOCOL_IS_SHUTDOWN);
- return -1;
- }
-
- return s->method->ssl_write(s, buf, num);
- }
-
- int SSL_shutdown(SSL *s) {
- /* Note that this function behaves differently from what one might expect.
- * Return values are 0 for no success (yet), 1 for success; but calling it
- * once is usually not enough, even if blocking I/O is used (see
- * ssl3_shutdown). */
-
- if (s->handshake_func == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_shutdown, SSL_R_UNINITIALIZED);
- return -1;
- }
-
- if (!SSL_in_init(s)) {
- return s->method->ssl_shutdown(s);
- }
-
- return 1;
- }
-
- int SSL_renegotiate(SSL *s) {
- if (SSL_IS_DTLS(s)) {
- /* Renegotiation is not supported for DTLS. */
- OPENSSL_PUT_ERROR(SSL, SSL_renegotiate, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- if (s->renegotiate == 0) {
- s->renegotiate = 1;
- }
-
- s->new_session = 1;
- return s->method->ssl_renegotiate(s);
- }
-
- int SSL_renegotiate_pending(SSL *s) {
- /* becomes true when negotiation is requested; false again once a handshake
- * has finished */
- return s->renegotiate != 0;
- }
-
- long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) {
- long l;
-
- switch (cmd) {
- case SSL_CTRL_GET_READ_AHEAD:
- return s->read_ahead;
-
- case SSL_CTRL_SET_READ_AHEAD:
- l = s->read_ahead;
- s->read_ahead = larg;
- return l;
-
- case SSL_CTRL_SET_MSG_CALLBACK_ARG:
- s->msg_callback_arg = parg;
- return 1;
-
- case SSL_CTRL_OPTIONS:
- return s->options |= larg;
-
- case SSL_CTRL_CLEAR_OPTIONS:
- return s->options &= ~larg;
-
- case SSL_CTRL_MODE:
- return s->mode |= larg;
-
- case SSL_CTRL_CLEAR_MODE:
- return s->mode &= ~larg;
-
- case SSL_CTRL_GET_MAX_CERT_LIST:
- return s->max_cert_list;
-
- case SSL_CTRL_SET_MAX_CERT_LIST:
- l = s->max_cert_list;
- s->max_cert_list = larg;
- return l;
-
- case SSL_CTRL_SET_MTU:
- if (larg < (long)dtls1_min_mtu()) {
- return 0;
- }
- if (SSL_IS_DTLS(s)) {
- s->d1->mtu = larg;
- return larg;
- }
- return 0;
-
- case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
- if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) {
- return 0;
- }
- s->max_send_fragment = larg;
- return 1;
-
- case SSL_CTRL_GET_RI_SUPPORT:
- if (s->s3) {
- return s->s3->send_connection_binding;
- }
- return 0;
-
- case SSL_CTRL_CERT_FLAGS:
- return s->cert->cert_flags |= larg;
-
- case SSL_CTRL_CLEAR_CERT_FLAGS:
- return s->cert->cert_flags &= ~larg;
-
- case SSL_CTRL_GET_RAW_CIPHERLIST:
- if (parg) {
- if (s->cert->ciphers_raw == NULL) {
- return 0;
- }
- *(uint8_t **)parg = s->cert->ciphers_raw;
- return (int)s->cert->ciphers_rawlen;
- }
-
- /* Passing a NULL |parg| returns the size of a single
- * cipher suite value. */
- return 2;
-
- default:
- return s->method->ssl_ctrl(s, cmd, larg, parg);
- }
- }
-
- long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) {
- switch (cmd) {
- case SSL_CTRL_SET_MSG_CALLBACK:
- s->msg_callback =
- (void (*)(int write_p, int version, int content_type, const void *buf,
- size_t len, SSL *ssl, void *arg))(fp);
- return 1;
-
- default:
- return s->method->ssl_callback_ctrl(s, cmd, fp);
- }
- }
-
- LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) { return ctx->sessions; }
-
- long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) {
- long l;
-
- switch (cmd) {
- case SSL_CTRL_GET_READ_AHEAD:
- return ctx->read_ahead;
-
- case SSL_CTRL_SET_READ_AHEAD:
- l = ctx->read_ahead;
- ctx->read_ahead = larg;
- return l;
-
- case SSL_CTRL_SET_MSG_CALLBACK_ARG:
- ctx->msg_callback_arg = parg;
- return 1;
-
- case SSL_CTRL_GET_MAX_CERT_LIST:
- return ctx->max_cert_list;
-
- case SSL_CTRL_SET_MAX_CERT_LIST:
- l = ctx->max_cert_list;
- ctx->max_cert_list = larg;
- return l;
-
- case SSL_CTRL_SET_SESS_CACHE_SIZE:
- l = ctx->session_cache_size;
- ctx->session_cache_size = larg;
- return l;
-
- case SSL_CTRL_GET_SESS_CACHE_SIZE:
- return ctx->session_cache_size;
-
- case SSL_CTRL_SET_SESS_CACHE_MODE:
- l = ctx->session_cache_mode;
- ctx->session_cache_mode = larg;
- return l;
-
- case SSL_CTRL_GET_SESS_CACHE_MODE:
- return ctx->session_cache_mode;
-
- case SSL_CTRL_SESS_NUMBER:
- return lh_SSL_SESSION_num_items(ctx->sessions);
-
- case SSL_CTRL_SESS_CONNECT:
- case SSL_CTRL_SESS_CONNECT_GOOD:
- case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
- case SSL_CTRL_SESS_ACCEPT:
- case SSL_CTRL_SESS_ACCEPT_GOOD:
- case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
- case SSL_CTRL_SESS_HIT:
- case SSL_CTRL_SESS_CB_HIT:
- case SSL_CTRL_SESS_MISSES:
- case SSL_CTRL_SESS_TIMEOUTS:
- case SSL_CTRL_SESS_CACHE_FULL:
- /* Statistics are no longer supported.
- * TODO(davidben): Try to remove the accessors altogether. */
- return 0;
-
- case SSL_CTRL_OPTIONS:
- return ctx->options |= larg;
-
- case SSL_CTRL_CLEAR_OPTIONS:
- return ctx->options &= ~larg;
-
- case SSL_CTRL_MODE:
- return ctx->mode |= larg;
-
- case SSL_CTRL_CLEAR_MODE:
- return ctx->mode &= ~larg;
-
- case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
- if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) {
- return 0;
- }
- ctx->max_send_fragment = larg;
- return 1;
-
- case SSL_CTRL_CERT_FLAGS:
- return ctx->cert->cert_flags |= larg;
-
- case SSL_CTRL_CLEAR_CERT_FLAGS:
- return ctx->cert->cert_flags &= ~larg;
-
- default:
- return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
- }
- }
-
- long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) {
- switch (cmd) {
- case SSL_CTRL_SET_MSG_CALLBACK:
- ctx->msg_callback =
- (void (*)(int write_p, int version, int content_type, const void *buf,
- size_t len, SSL *ssl, void *arg))(fp);
- return 1;
-
- default:
- return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
- }
- }
-
- int ssl_cipher_id_cmp(const void *in_a, const void *in_b) {
- long l;
- const SSL_CIPHER *a = in_a;
- const SSL_CIPHER *b = in_b;
- const long a_id = a->id;
- const long b_id = b->id;
-
- l = a_id - b_id;
- if (l == 0L) {
- return 0;
- } else {
- return (l > 0) ? 1 : -1;
- }
- }
-
- int ssl_cipher_ptr_id_cmp(const SSL_CIPHER **ap, const SSL_CIPHER **bp) {
- long l;
- const long a_id = (*ap)->id;
- const long b_id = (*bp)->id;
-
- l = a_id - b_id;
- if (l == 0) {
- return 0;
- } else {
- return (l > 0) ? 1 : -1;
- }
- }
-
- /* return a STACK of the ciphers available for the SSL and in order of
- * preference */
- STACK_OF(SSL_CIPHER) * SSL_get_ciphers(const SSL *s) {
- if (s == NULL) {
- return NULL;
- }
-
- if (s->cipher_list != NULL) {
- return s->cipher_list->ciphers;
- }
-
- if (s->version >= TLS1_1_VERSION && s->ctx != NULL &&
- s->ctx->cipher_list_tls11 != NULL) {
- return s->ctx->cipher_list_tls11->ciphers;
- }
-
- if (s->ctx != NULL && s->ctx->cipher_list != NULL) {
- return s->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 *s) {
- if (s == NULL) {
- return NULL;
- }
-
- if (s->cipher_list_by_id != NULL) {
- return s->cipher_list_by_id;
- }
-
- if (s->ctx != NULL && s->ctx->cipher_list_by_id != NULL) {
- return s->ctx->cipher_list_by_id;
- }
-
- return NULL;
- }
-
- /* The old interface to get the same thing as SSL_get_ciphers() */
- const char *SSL_get_cipher_list(const SSL *s, int n) {
- const SSL_CIPHER *c;
- STACK_OF(SSL_CIPHER) * sk;
-
- if (s == NULL) {
- return NULL;
- }
-
- sk = SSL_get_ciphers(s);
- 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;
- }
-
- /* specify the ciphers to be used by default by the SSL_CTX */
- int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) {
- STACK_OF(SSL_CIPHER) *sk;
-
- sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
- &ctx->cipher_list_by_id, str);
- /* ssl_create_cipher_list may return an empty stack if it was unable to find
- * a cipher matching the given rule string (for example if the rule string
- * specifies a cipher which has been disabled). This is not an error as far
- * as ssl_create_cipher_list is concerned, and hence ctx->cipher_list and
- * ctx->cipher_list_by_id has been updated. */
- if (sk == NULL) {
- return 0;
- } else if (sk_SSL_CIPHER_num(sk) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_cipher_list, 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) *sk;
-
- sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list_tls11, NULL, str);
- if (sk == NULL) {
- return 0;
- } else if (sk_SSL_CIPHER_num(sk) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_set_cipher_list_tls11,
- SSL_R_NO_CIPHER_MATCH);
- return 0;
- }
-
- return 1;
- }
-
- /* specify the ciphers to be used by the SSL */
- int SSL_set_cipher_list(SSL *s, const char *str) {
- STACK_OF(SSL_CIPHER) *sk;
-
- sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
- &s->cipher_list_by_id, str);
-
- /* see comment in SSL_CTX_set_cipher_list */
- if (sk == NULL) {
- return 0;
- } else if (sk_SSL_CIPHER_num(sk) == 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_set_cipher_list, SSL_R_NO_CIPHER_MATCH);
- return 0;
- }
-
- return 1;
- }
-
- int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, uint8_t *p) {
- size_t i;
- const SSL_CIPHER *c;
- CERT *ct = s->cert;
- uint8_t *q;
- /* Set disabled masks for this session */
- ssl_set_client_disabled(s);
-
- if (sk == NULL) {
- return 0;
- }
- q = p;
-
- for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
- c = sk_SSL_CIPHER_value(sk, i);
- /* Skip disabled ciphers */
- if (c->algorithm_ssl & ct->mask_ssl ||
- c->algorithm_mkey & ct->mask_k ||
- c->algorithm_auth & ct->mask_a) {
- continue;
- }
- s2n(ssl3_get_cipher_value(c), p);
- }
-
- /* If all ciphers were disabled, return the error to the caller. */
- if (p == q) {
- return 0;
- }
-
- /* Add SCSVs. */
- if (!s->renegotiate) {
- s2n(SSL3_CK_SCSV & 0xffff, p);
- }
-
- if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
- s2n(SSL3_CK_FALLBACK_SCSV & 0xffff, p);
- }
-
- return p - q;
- }
-
- STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const CBS *cbs) {
- CBS cipher_suites = *cbs;
- const SSL_CIPHER *c;
- STACK_OF(SSL_CIPHER) * sk;
-
- if (s->s3) {
- s->s3->send_connection_binding = 0;
- }
-
- if (CBS_len(&cipher_suites) % 2 != 0) {
- OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list,
- SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
- return NULL;
- }
-
- sk = sk_SSL_CIPHER_new_null();
- if (sk == NULL) {
- OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (!CBS_stow(&cipher_suites, &s->cert->ciphers_raw,
- &s->cert->ciphers_rawlen)) {
- OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list, 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_bytes_to_cipher_list, ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- /* Check for SCSV. */
- if (s->s3 && cipher_suite == (SSL3_CK_SCSV & 0xffff)) {
- /* SCSV is fatal if renegotiating. */
- if (s->renegotiate) {
- OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list,
- SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- goto err;
- }
- s->s3->send_connection_binding = 1;
- continue;
- }
-
- /* Check for FALLBACK_SCSV. */
- if (s->s3 && cipher_suite == (SSL3_CK_FALLBACK_SCSV & 0xffff)) {
- uint16_t max_version = ssl3_get_max_server_version(s);
- if (SSL_IS_DTLS(s) ? (uint16_t)s->version > max_version
- : (uint16_t)s->version < max_version) {
- OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list,
- SSL_R_INAPPROPRIATE_FALLBACK);
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL3_AD_INAPPROPRIATE_FALLBACK);
- goto err;
- }
- continue;
- }
-
- c = ssl3_get_cipher_by_value(cipher_suite);
- if (c != NULL && !sk_SSL_CIPHER_push(sk, c)) {
- OPENSSL_PUT_ERROR(SSL, ssl_bytes_to_cipher_list, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
-
- return sk;
-
- err:
- if (sk != NULL) {
- sk_SSL_CIPHER_free(sk);
- }
- return NULL;
- }
-
-
- /* return a servername extension value if provided in Client Hello, or NULL. So
- * far, only host_name types are defined (RFC 3546). */
- const char *SSL_get_servername(const SSL *s, const int type) {
- if (type != TLSEXT_NAMETYPE_host_name) {
- return NULL;
- }
-
- return s->session && !s->tlsext_hostname ? s->session->tlsext_hostname
- : s->tlsext_hostname;
- }
-
- int SSL_get_servername_type(const SSL *s) {
- if (s->session &&
- (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) {
- return TLSEXT_NAMETYPE_host_name;
- }
-
- return -1;
- }
-
- 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->session;
-
- *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->session;
-
- *out_len = 0;
- *out = NULL;
- if (ssl->server || !session || !session->ocsp_response) {
- return;
- }
- *out = session->ocsp_response;
- *out_len = session->ocsp_response_length;
- }
-
- /* SSL_select_next_proto implements the standard protocol selection. It is
- * expected that this function is called from the callback set by
- * SSL_CTX_set_next_proto_select_cb.
- *
- * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
- * strings. The length byte itself is not included in the length. A byte
- * string of length 0 is invalid. No byte string may be truncated.
- *
- * The current, but experimental algorithm for selecting the protocol is:
- *
- * 1) If the server doesn't support NPN then this is indicated to the
- * callback. In this case, the client application has to abort the connection
- * or have a default application level protocol.
- *
- * 2) If the server supports NPN, but advertises an empty list then the
- * client selects the first protcol in its list, but indicates via the
- * API that this fallback case was enacted.
- *
- * 3) Otherwise, the client finds the first protocol in the server's list
- * that it supports and selects this protocol. This is because it's
- * assumed that the server has better information about which protocol
- * a client should use.
- *
- * 4) If the client doesn't support any of the server's advertised
- * protocols, then this is treated the same as case 2.
- *
- * It returns either
- * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
- * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
- */
- int SSL_select_next_proto(uint8_t **out, uint8_t *outlen, const uint8_t *server,
- unsigned int server_len, const uint8_t *client,
- unsigned int 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;
- *outlen = result[0];
- return status;
- }
-
- /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
- * requested protocol for this connection and returns 0. If the client didn't
- * request any protocol, then *data is set to NULL.
- *
- * Note that the client can request any protocol it chooses. The value returned
- * from this function need not be a member of the list of supported protocols
- * provided by the callback. */
- void SSL_get0_next_proto_negotiated(const SSL *s, const uint8_t **data,
- unsigned *len) {
- *data = s->next_proto_negotiated;
- if (!*data) {
- *len = 0;
- } else {
- *len = s->next_proto_negotiated_len;
- }
- }
-
- /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
- * TLS server needs a list of supported protocols for Next Protocol
- * Negotiation. The returned list must be in wire format. The list is returned
- * by setting |out| to point to it and |outlen| to its length. This memory will
- * not be modified, but one should assume that the SSL* keeps a reference to
- * it.
- *
- * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise.
- * Otherwise, no such extension will be included in the ServerHello. */
- void SSL_CTX_set_next_protos_advertised_cb(
- SSL_CTX *ctx,
- int (*cb)(SSL *ssl, const uint8_t **out, unsigned int *outlen, void *arg),
- void *arg) {
- ctx->next_protos_advertised_cb = cb;
- ctx->next_protos_advertised_cb_arg = arg;
- }
-
- /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
- * client needs to select a protocol from the server's provided list. |out|
- * must be set to point to the selected protocol (which may be within |in|).
- * The length of the protocol name must be written into |outlen|. The server's
- * advertised protocols are provided in |in| and |inlen|. The callback can
- * assume that |in| is syntactically valid.
- *
- * The client must select a protocol. It is fatal to the connection if this
- * callback returns a value other than SSL_TLSEXT_ERR_OK.
- */
- void SSL_CTX_set_next_proto_select_cb(
- SSL_CTX *ctx, int (*cb)(SSL *s, uint8_t **out, uint8_t *outlen,
- const uint8_t *in, unsigned int inlen, 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) {
- if (ctx->alpn_client_proto_list) {
- 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) {
- if (ssl->alpn_client_proto_list) {
- 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;
- }
-
- /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
- * during ClientHello processing in order to select an ALPN protocol from the
- * client's list of offered protocols. */
- void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
- int (*cb)(SSL *ssl, const uint8_t **out,
- uint8_t *outlen, const uint8_t *in,
- unsigned int inlen, void *arg),
- void *arg) {
- ctx->alpn_select_cb = cb;
- ctx->alpn_select_cb_arg = arg;
- }
-
- /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
- * On return it sets |*data| to point to |*len| bytes of protocol name (not
- * including the leading length-prefix byte). If the server didn't respond with
- * a negotiated protocol then |*len| will be zero. */
- void SSL_get0_alpn_selected(const SSL *ssl, const uint8_t **data,
- unsigned *len) {
- *data = NULL;
- if (ssl->s3) {
- *data = ssl->s3->alpn_selected;
- }
- if (*data == NULL) {
- *len = 0;
- } else {
- *len = ssl->s3->alpn_selected_len;
- }
- }
-
- int SSL_export_keying_material(SSL *s, uint8_t *out, size_t out_len,
- const char *label, size_t label_len,
- const uint8_t *context, size_t context_len,
- int use_context) {
- if (s->version < TLS1_VERSION) {
- return 0;
- }
-
- return s->enc_method->export_keying_material(
- s, out, out_len, label, label_len, context, context_len, use_context);
- }
-
- static uint32_t ssl_session_hash(const SSL_SESSION *a) {
- uint32_t hash =
- ((uint32_t)a->session_id[0]) ||
- ((uint32_t)a->session_id[1] << 8) ||
- ((uint32_t)a->session_id[2] << 16) ||
- ((uint32_t)a->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 *meth) {
- SSL_CTX *ret = NULL;
-
- if (meth == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, SSL_R_NULL_SSL_METHOD_PASSED);
- return NULL;
- }
-
- if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
- goto err;
- }
-
- ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
- if (ret == NULL) {
- goto err;
- }
-
- memset(ret, 0, sizeof(SSL_CTX));
-
- ret->method = meth->method;
-
- ret->cert_store = NULL;
- ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
- ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
- ret->session_cache_head = NULL;
- ret->session_cache_tail = NULL;
-
- /* We take the system default */
- ret->session_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
-
- ret->new_session_cb = 0;
- ret->remove_session_cb = 0;
- ret->get_session_cb = 0;
- ret->generate_session_id = 0;
-
- ret->references = 1;
- ret->quiet_shutdown = 0;
-
- ret->info_callback = NULL;
-
- ret->app_verify_callback = 0;
- ret->app_verify_arg = NULL;
-
- ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
- ret->read_ahead = 0;
- ret->msg_callback = 0;
- ret->msg_callback_arg = NULL;
- ret->verify_mode = SSL_VERIFY_NONE;
- ret->sid_ctx_length = 0;
- ret->default_verify_callback = NULL;
- ret->cert = ssl_cert_new();
- if (ret->cert == NULL) {
- goto err;
- }
-
- ret->default_passwd_callback = 0;
- ret->default_passwd_callback_userdata = NULL;
- ret->client_cert_cb = 0;
-
- 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_CTX_new, 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(&g_ex_data_class_ssl_ctx, ret, &ret->ex_data);
-
- ret->extra_certs = NULL;
-
- ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
-
- ret->tlsext_servername_callback = 0;
- ret->tlsext_servername_arg = NULL;
- /* 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->tlsext_status_cb = 0;
- ret->tlsext_status_arg = NULL;
-
- ret->next_protos_advertised_cb = 0;
- ret->next_proto_select_cb = 0;
- ret->psk_identity_hint = NULL;
- ret->psk_client_callback = NULL;
- ret->psk_server_callback = NULL;
-
- /* Default is to connect to non-RI servers. When RI is more widely deployed
- * might change this. */
- ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
-
- /* Lock the SSL_CTX to the specified version, for compatibility with legacy
- * uses of SSL_METHOD. */
- if (meth->version != 0) {
- SSL_CTX_set_max_version(ret, meth->version);
- SSL_CTX_set_min_version(ret, meth->version);
- }
-
- return ret;
-
- err:
- OPENSSL_PUT_ERROR(SSL, SSL_CTX_new, ERR_R_MALLOC_FAILURE);
- err2:
- if (ret != NULL) {
- SSL_CTX_free(ret);
- }
- return NULL;
- }
-
- void SSL_CTX_free(SSL_CTX *a) {
- int i;
-
- if (a == NULL) {
- return;
- }
-
- i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
- if (i > 0) {
- return;
- }
-
- if (a->param) {
- X509_VERIFY_PARAM_free(a->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].) */
- if (a->sessions != NULL) {
- SSL_CTX_flush_sessions(a, 0);
- }
-
- CRYPTO_free_ex_data(&g_ex_data_class_ssl_ctx, a, &a->ex_data);
-
- if (a->sessions != NULL) {
- lh_SSL_SESSION_free(a->sessions);
- }
- if (a->cert_store != NULL) {
- X509_STORE_free(a->cert_store);
- }
- if (a->cipher_list != NULL) {
- ssl_cipher_preference_list_free(a->cipher_list);
- }
- if (a->cipher_list_by_id != NULL) {
- sk_SSL_CIPHER_free(a->cipher_list_by_id);
- }
- if (a->cipher_list_tls11 != NULL) {
- ssl_cipher_preference_list_free(a->cipher_list_tls11);
- }
- if (a->cert != NULL) {
- ssl_cert_free(a->cert);
- }
- if (a->client_CA != NULL) {
- sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
- }
- if (a->extra_certs != NULL) {
- sk_X509_pop_free(a->extra_certs, X509_free);
- }
- if (a->srtp_profiles) {
- sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
- }
- if (a->psk_identity_hint) {
- OPENSSL_free(a->psk_identity_hint);
- }
- if (a->tlsext_ecpointformatlist) {
- OPENSSL_free(a->tlsext_ecpointformatlist);
- }
- if (a->tlsext_ellipticcurvelist) {
- OPENSSL_free(a->tlsext_ellipticcurvelist);
- }
- if (a->alpn_client_proto_list != NULL) {
- OPENSSL_free(a->alpn_client_proto_list);
- }
- if (a->tlsext_channel_id_private) {
- EVP_PKEY_free(a->tlsext_channel_id_private);
- }
- if (a->keylog_bio) {
- BIO_free(a->keylog_bio);
- }
-
- OPENSSL_free(a);
- }
-
- void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) {
- ctx->default_passwd_callback = cb;
- }
-
- void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) {
- ctx->default_passwd_callback_userdata = u;
- }
-
- void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
- int (*cb)(X509_STORE_CTX *, void *),
- 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 *c, int (*cb)(SSL *ssl, void *arg),
- void *arg) {
- ssl_cert_set_cert_cb(c->cert, cb, arg);
- }
-
- void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg) {
- ssl_cert_set_cert_cb(s->cert, cb, arg);
- }
-
- static int ssl_has_key(SSL *s, size_t idx) {
- CERT_PKEY *cpk = &s->cert->pkeys[idx];
- return cpk->x509 && cpk->privatekey;
- }
-
- void ssl_get_compatible_server_ciphers(SSL *s, uint32_t *out_mask_k,
- uint32_t *out_mask_a) {
- CERT *c = s->cert;
- int rsa_enc, rsa_sign, dh_tmp;
- uint32_t mask_k, mask_a;
- int have_ecc_cert, ecdsa_ok;
- X509 *x;
-
- if (c == NULL) {
- /* TODO(davidben): Is this codepath possible? */
- *out_mask_k = 0;
- *out_mask_a = 0;
- return;
- }
-
- dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
-
- rsa_enc = ssl_has_key(s, SSL_PKEY_RSA_ENC);
- rsa_sign = ssl_has_key(s, SSL_PKEY_RSA_SIGN);
- have_ecc_cert = ssl_has_key(s, SSL_PKEY_ECC);
- mask_k = 0;
- mask_a = 0;
-
- if (rsa_enc) {
- mask_k |= SSL_kRSA;
- }
- if (dh_tmp) {
- mask_k |= SSL_kDHE;
- }
- if (rsa_enc || rsa_sign) {
- mask_a |= SSL_aRSA;
- }
-
- /* An ECC certificate may be usable for ECDSA cipher suites depending on the
- * key usage extension and on the client's curve preferences. */
- if (have_ecc_cert) {
- x = c->pkeys[SSL_PKEY_ECC].x509;
- /* This call populates extension flags (ex_flags). */
- X509_check_purpose(x, -1, 0);
- ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE)
- ? (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)
- : 1;
- if (!tls1_check_ec_cert(s, x)) {
- ecdsa_ok = 0;
- }
- if (ecdsa_ok) {
- mask_a |= SSL_aECDSA;
- }
- }
-
- /* If we are considering an ECC cipher suite that uses an ephemeral EC
- * key, check it. */
- if (tls1_check_ec_tmp_key(s)) {
- mask_k |= SSL_kECDHE;
- }
-
- /* PSK requires a server callback. */
- if (s->psk_server_callback != NULL) {
- mask_k |= SSL_kPSK;
- mask_a |= SSL_aPSK;
- }
-
- *out_mask_k = mask_k;
- *out_mask_a = mask_a;
- }
-
- /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
- #define ku_reject(x, usage) \
- (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
-
- int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) {
- const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
- uint32_t alg_a = cs->algorithm_auth;
- int signature_nid = 0, md_nid = 0, pk_nid = 0;
-
- /* This call populates the ex_flags field correctly */
- X509_check_purpose(x, -1, 0);
- if (x->sig_alg && x->sig_alg->algorithm) {
- signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
- OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
- }
- if (alg_a & SSL_aECDSA) {
- /* key usage, if present, must allow signing */
- if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
- OPENSSL_PUT_ERROR(SSL, ssl_check_srvr_ecc_cert_and_alg,
- SSL_R_ECC_CERT_NOT_FOR_SIGNING);
- return 0;
- }
- }
-
- return 1; /* all checks are ok */
- }
-
- static int ssl_get_server_cert_index(const SSL *s) {
- int idx;
- idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
- if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) {
- idx = SSL_PKEY_RSA_SIGN;
- }
- if (idx == -1) {
- OPENSSL_PUT_ERROR(SSL, ssl_get_server_cert_index, ERR_R_INTERNAL_ERROR);
- }
- return idx;
- }
-
- CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) {
- int i = ssl_get_server_cert_index(s);
-
- /* This may or may not be an error. */
- if (i < 0) {
- return NULL;
- }
-
- /* May be NULL. */
- return &s->cert->pkeys[i];
- }
-
- EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher) {
- uint32_t alg_a = cipher->algorithm_auth;
- CERT *c = s->cert;
- int idx = -1;
-
- if (alg_a & SSL_aRSA) {
- if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) {
- idx = SSL_PKEY_RSA_SIGN;
- } else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) {
- idx = SSL_PKEY_RSA_ENC;
- }
- } else if ((alg_a & SSL_aECDSA) &&
- (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) {
- idx = SSL_PKEY_ECC;
- }
-
- if (idx == -1) {
- OPENSSL_PUT_ERROR(SSL, ssl_get_sign_pkey, ERR_R_INTERNAL_ERROR);
- return NULL;
- }
-
- return c->pkeys[idx].privatekey;
- }
-
- void ssl_update_cache(SSL *s, int mode) {
- /* Never cache sessions with empty session IDs. */
- if (s->session->session_id_length == 0) {
- return;
- }
-
- SSL_CTX *ctx = s->initial_ctx;
- if ((ctx->session_cache_mode & mode) == mode && !s->hit &&
- ((ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) ||
- SSL_CTX_add_session(ctx, s->session)) &&
- ctx->new_session_cb != NULL) {
- /* Note: |new_session_cb| is called whether the internal session cache is
- * used or not. */
- if (!ctx->new_session_cb(s, SSL_SESSION_up_ref(s->session))) {
- SSL_SESSION_free(s->session);
- }
- }
-
- if (!(ctx->session_cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) &&
- !(ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) &&
- (ctx->session_cache_mode & mode) == mode) {
- /* Automatically flush the internal session cache every 255 connections. */
- int flush_cache = 0;
- CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
- ctx->handshakes_since_cache_flush++;
- if (ctx->handshakes_since_cache_flush >= 255) {
- flush_cache = 1;
- ctx->handshakes_since_cache_flush = 0;
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
-
- if (flush_cache) {
- SSL_CTX_flush_sessions(ctx, (unsigned long)time(NULL));
- }
- }
- }
-
- int SSL_get_error(const SSL *s, 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 ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
- (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) {
- /* The socket was cleanly shut down with a 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(s)) {
- return SSL_ERROR_PENDING_SESSION;
- }
-
- if (SSL_want_certificate(s)) {
- return SSL_ERROR_PENDING_CERTIFICATE;
- }
-
- if (SSL_want_read(s)) {
- bio = SSL_get_rbio(s);
- 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
- * s->rwstate incorrectly (so that we have SSL_want_read(s) instead of
- * SSL_want_write(s)) 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(s)) {
- bio = SSL_get_wbio(s);
- if (BIO_should_write(bio)) {
- return SSL_ERROR_WANT_WRITE;
- }
-
- if (BIO_should_read(bio)) {
- /* See above (SSL_want_read(s) 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(s)) {
- return SSL_ERROR_WANT_X509_LOOKUP;
- }
-
- if (SSL_want_channel_id_lookup(s)) {
- return SSL_ERROR_WANT_CHANNEL_ID_LOOKUP;
- }
-
- return SSL_ERROR_SYSCALL;
- }
-
- int SSL_do_handshake(SSL *s) {
- int ret = 1;
-
- if (s->handshake_func == NULL) {
- OPENSSL_PUT_ERROR(SSL, SSL_do_handshake, SSL_R_CONNECTION_TYPE_NOT_SET);
- return -1;
- }
-
- s->method->ssl_renegotiate_check(s);
-
- if (SSL_in_init(s)) {
- ret = s->handshake_func(s);
- }
- return ret;
- }
-
- void SSL_set_accept_state(SSL *s) {
- s->server = 1;
- s->shutdown = 0;
- s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
- s->handshake_func = s->method->ssl_accept;
- /* clear the current cipher */
- ssl_clear_cipher_ctx(s);
- }
-
- void SSL_set_connect_state(SSL *s) {
- s->server = 0;
- s->shutdown = 0;
- s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
- s->handshake_func = s->method->ssl_connect;
- /* clear the current cipher */
- ssl_clear_cipher_ctx(s);
- }
-
- int ssl_undefined_function(SSL *s) {
- OPENSSL_PUT_ERROR(SSL, ssl_undefined_function,
- ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- int ssl_undefined_void_function(void) {
- OPENSSL_PUT_ERROR(SSL, ssl_undefined_void_function,
- ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- int ssl_undefined_const_function(const SSL *s) {
- OPENSSL_PUT_ERROR(SSL, ssl_undefined_const_function,
- ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- static const char *ssl_get_version(int version) {
- switch (version) {
- 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 *s) {
- return ssl_get_version(s->version);
- }
-
- const char *SSL_SESSION_get_version(const SSL_SESSION *sess) {
- return ssl_get_version(sess->ssl_version);
- }
-
- void ssl_clear_cipher_ctx(SSL *s) {
- if (s->aead_read_ctx != NULL) {
- EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx);
- OPENSSL_free(s->aead_read_ctx);
- s->aead_read_ctx = NULL;
- }
-
- if (s->aead_write_ctx != NULL) {
- EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx);
- OPENSSL_free(s->aead_write_ctx);
- s->aead_write_ctx = NULL;
- }
- }
-
- X509 *SSL_get_certificate(const SSL *s) {
- if (s->cert != NULL) {
- return s->cert->key->x509;
- }
-
- return NULL;
- }
-
- EVP_PKEY *SSL_get_privatekey(const SSL *s) {
- if (s->cert != NULL) {
- return s->cert->key->privatekey;
- }
-
- return NULL;
- }
-
- X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) {
- if (ctx->cert != NULL) {
- return ctx->cert->key->x509;
- }
-
- return NULL;
- }
-
- EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) {
- if (ctx->cert != NULL) {
- return ctx->cert->key->privatekey;
- }
-
- return NULL;
- }
-
- const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) {
- if (s->session != NULL && s->session->cipher != NULL) {
- return s->session->cipher;
- }
-
- return NULL;
- }
-
- const void *SSL_get_current_compression(SSL *s) { return NULL; }
-
- const void *SSL_get_current_expansion(SSL *s) { return NULL; }
-
- int ssl_init_wbio_buffer(SSL *s, int push) {
- BIO *bbio;
-
- if (s->bbio == NULL) {
- bbio = BIO_new(BIO_f_buffer());
- if (bbio == NULL) {
- return 0;
- }
- s->bbio = bbio;
- } else {
- bbio = s->bbio;
- if (s->bbio == s->wbio) {
- s->wbio = BIO_pop(s->wbio);
- }
- }
-
- BIO_reset(bbio);
- if (!BIO_set_read_buffer_size(bbio, 1)) {
- OPENSSL_PUT_ERROR(SSL, ssl_init_wbio_buffer, ERR_R_BUF_LIB);
- return 0;
- }
-
- if (push) {
- if (s->wbio != bbio) {
- s->wbio = BIO_push(bbio, s->wbio);
- }
- } else {
- if (s->wbio == bbio) {
- s->wbio = BIO_pop(bbio);
- }
- }
-
- return 1;
- }
-
- void ssl_free_wbio_buffer(SSL *s) {
- if (s->bbio == NULL) {
- return;
- }
-
- if (s->bbio == s->wbio) {
- /* remove buffering */
- s->wbio = BIO_pop(s->wbio);
- }
-
- BIO_free(s->bbio);
- s->bbio = NULL;
- }
-
- void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) {
- ctx->quiet_shutdown = mode;
- }
-
- int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) {
- return ctx->quiet_shutdown;
- }
-
- void SSL_set_quiet_shutdown(SSL *s, int mode) { s->quiet_shutdown = mode; }
-
- int SSL_get_quiet_shutdown(const SSL *s) { return s->quiet_shutdown; }
-
- void SSL_set_shutdown(SSL *s, int mode) { s->shutdown = mode; }
-
- int SSL_get_shutdown(const SSL *s) { return s->shutdown; }
-
- int SSL_version(const SSL *s) { return s->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;
- }
-
- if (ssl->cert != NULL) {
- ssl_cert_free(ssl->cert);
- }
-
- ssl->cert = ssl_cert_dup(ctx->cert);
- CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
- if (ssl->ctx != NULL) {
- 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 *CAfile,
- const char *CApath) {
- return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
- }
-
- void SSL_set_info_callback(SSL *ssl,
- void (*cb)(const SSL *ssl, int type, int val)) {
- ssl->info_callback = cb;
- }
-
- void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/, int /*type*/,
- int /*val*/) {
- return ssl->info_callback;
- }
-
- int SSL_state(const SSL *ssl) { return ssl->state; }
-
- void SSL_set_state(SSL *ssl, int state) { ssl->state = state; }
-
- void SSL_set_verify_result(SSL *ssl, long arg) { ssl->verify_result = arg; }
-
- long SSL_get_verify_result(const SSL *ssl) { return ssl->verify_result; }
-
- int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- 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,
- new_func, dup_func, free_func)) {
- return -1;
- }
- return index;
- }
-
- int SSL_set_ex_data(SSL *s, int idx, void *arg) {
- return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
- }
-
- void *SSL_get_ex_data(const SSL *s, int idx) {
- return CRYPTO_get_ex_data(&s->ex_data, idx);
- }
-
- int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- 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,
- new_func, dup_func, free_func)) {
- return -1;
- }
- return index;
- }
-
- int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) {
- return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
- }
-
- void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) {
- return CRYPTO_get_ex_data(&s->ex_data, idx);
- }
-
- int ssl_ok(SSL *s) { return 1; }
-
- 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) {
- if (ctx->cert_store != NULL) {
- X509_STORE_free(ctx->cert_store);
- }
- ctx->cert_store = store;
- }
-
- int SSL_want(const SSL *s) { return s->rwstate; }
-
- void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
- RSA *(*cb)(SSL *ssl, int is_export,
- int keylength)) {
- SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
- }
-
- void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
- int keylength)) {
- SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
- }
-
- void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
- DH *(*dh)(SSL *ssl, int is_export,
- int keylength)) {
- SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
- }
-
- void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export,
- int keylength)) {
- SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
- }
-
- void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
- EC_KEY *(*callback)(SSL *ssl, int is_export,
- int keylength)) {
- SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
- (void (*)(void))callback);
- }
-
- void SSL_set_tmp_ecdh_callback(SSL *ssl,
- EC_KEY *(*callback)(SSL *ssl, int is_export,
- int keylength)) {
- SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))callback);
- }
-
- 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_CTX_use_psk_identity_hint,
- SSL_R_DATA_LENGTH_TOO_LONG);
- return 0;
- }
-
- if (ctx->psk_identity_hint != NULL) {
- 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 *s, const char *identity_hint) {
- if (s == NULL) {
- return 0;
- }
-
- if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
- OPENSSL_PUT_ERROR(SSL, SSL_use_psk_identity_hint,
- SSL_R_DATA_LENGTH_TOO_LONG);
- return 0;
- }
-
- /* Clear currently configured hint, if any. */
- if (s->psk_identity_hint != NULL) {
- OPENSSL_free(s->psk_identity_hint);
- s->psk_identity_hint = NULL;
- }
-
- if (identity_hint != NULL) {
- s->psk_identity_hint = BUF_strdup(identity_hint);
- if (s->psk_identity_hint == NULL) {
- return 0;
- }
- }
-
- return 1;
- }
-
- const char *SSL_get_psk_identity_hint(const SSL *s) {
- if (s == NULL) {
- return NULL;
- }
- return s->psk_identity_hint;
- }
-
- const char *SSL_get_psk_identity(const SSL *s) {
- if (s == NULL || s->session == NULL) {
- return NULL;
- }
-
- return s->session->psk_identity;
- }
-
- void SSL_set_psk_client_callback(
- SSL *s, unsigned int (*cb)(SSL *ssl, const char *hint, char *identity,
- unsigned int max_identity_len, uint8_t *psk,
- unsigned int max_psk_len)) {
- s->psk_client_callback = cb;
- }
-
- void SSL_CTX_set_psk_client_callback(
- SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, const char *hint, char *identity,
- unsigned int max_identity_len,
- uint8_t *psk, unsigned int max_psk_len)) {
- ctx->psk_client_callback = cb;
- }
-
- void SSL_set_psk_server_callback(
- SSL *s, unsigned int (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
- unsigned int max_psk_len)) {
- s->psk_server_callback = cb;
- }
-
- void SSL_CTX_set_psk_server_callback(
- SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, const char *identity,
- uint8_t *psk, unsigned int max_psk_len)) {
- ctx->psk_server_callback = cb;
- }
-
- void SSL_CTX_set_min_version(SSL_CTX *ctx, uint16_t version) {
- ctx->min_version = version;
- }
-
- void SSL_CTX_set_max_version(SSL_CTX *ctx, uint16_t version) {
- ctx->max_version = version;
- }
-
- void SSL_set_min_version(SSL *ssl, uint16_t version) {
- ssl->min_version = version;
- }
-
- void SSL_set_max_version(SSL *ssl, uint16_t version) {
- ssl->max_version = version;
- }
-
- 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)) {
- SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
- }
- 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_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
- }
-
- void SSL_CTX_set_keylog_bio(SSL_CTX *ctx, BIO *keylog_bio) {
- if (ctx->keylog_bio != NULL) {
- BIO_free(ctx->keylog_bio);
- }
- ctx->keylog_bio = keylog_bio;
- }
-
- static int cbb_add_hex(CBB *cbb, const uint8_t *in, size_t in_len) {
- static const char hextable[] = "0123456789abcdef";
- uint8_t *out;
- size_t i;
-
- if (!CBB_add_space(cbb, &out, in_len * 2)) {
- return 0;
- }
-
- for (i = 0; i < in_len; i++) {
- *(out++) = (uint8_t)hextable[in[i] >> 4];
- *(out++) = (uint8_t)hextable[in[i] & 0xf];
- }
-
- return 1;
- }
-
- int ssl_ctx_log_rsa_client_key_exchange(SSL_CTX *ctx,
- const uint8_t *encrypted_premaster,
- size_t encrypted_premaster_len,
- const uint8_t *premaster,
- size_t premaster_len) {
- BIO *bio = ctx->keylog_bio;
- CBB cbb;
- uint8_t *out;
- size_t out_len;
- int ret;
-
- if (bio == NULL) {
- return 1;
- }
-
- if (encrypted_premaster_len < 8) {
- OPENSSL_PUT_ERROR(SSL, ssl_ctx_log_rsa_client_key_exchange,
- ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- if (!CBB_init(&cbb, 4 + 16 + 1 + premaster_len * 2 + 1)) {
- return 0;
- }
-
- if (!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_bytes(&cbb, (const uint8_t *)"\n", 1) ||
- !CBB_finish(&cbb, &out, &out_len)) {
- CBB_cleanup(&cbb);
- return 0;
- }
-
- CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
- ret = BIO_write(bio, out, out_len) >= 0 && BIO_flush(bio);
- CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
-
- OPENSSL_free(out);
- return ret;
- }
-
- int ssl_ctx_log_master_secret(SSL_CTX *ctx, const uint8_t *client_random,
- size_t client_random_len, const uint8_t *master,
- size_t master_len) {
- BIO *bio = ctx->keylog_bio;
- CBB cbb;
- uint8_t *out;
- size_t out_len;
- int ret;
-
- if (bio == NULL) {
- return 1;
- }
-
- if (client_random_len != 32) {
- OPENSSL_PUT_ERROR(SSL, ssl_ctx_log_master_secret, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- if (!CBB_init(&cbb, 14 + 64 + 1 + master_len * 2 + 1)) {
- return 0;
- }
-
- if (!CBB_add_bytes(&cbb, (const uint8_t *)"CLIENT_RANDOM ", 14) ||
- !cbb_add_hex(&cbb, client_random, 32) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)" ", 1) ||
- !cbb_add_hex(&cbb, master, master_len) ||
- !CBB_add_bytes(&cbb, (const uint8_t *)"\n", 1) ||
- !CBB_finish(&cbb, &out, &out_len)) {
- CBB_cleanup(&cbb);
- return 0;
- }
-
- CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
- ret = BIO_write(bio, out, out_len) >= 0 && BIO_flush(bio);
- CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
-
- OPENSSL_free(out);
- return ret;
- }
-
- int SSL_in_false_start(const SSL *s) {
- return s->s3->tmp.in_false_start;
- }
-
- int SSL_cutthrough_complete(const SSL *s) {
- return SSL_in_false_start(s);
- }
-
- 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 *s) {
- const SSL_CIPHER *const cipher = SSL_get_current_cipher(s);
-
- /* False Start only for TLS 1.2 with an ECDHE+AEAD cipher and ALPN or NPN. */
- return !SSL_IS_DTLS(s) &&
- SSL_version(s) >= TLS1_2_VERSION &&
- (s->s3->alpn_selected || s->s3->next_proto_neg_seen) &&
- cipher != NULL &&
- cipher->algorithm_mkey == SSL_kECDHE &&
- (cipher->algorithm_enc == SSL_AES128GCM ||
- cipher->algorithm_enc == SSL_AES256GCM ||
- cipher->algorithm_enc == SSL_CHACHA20POLY1305);
- }
-
- const SSL3_ENC_METHOD *ssl3_get_enc_method(uint16_t version) {
- switch (version) {
- case SSL3_VERSION:
- return &SSLv3_enc_data;
-
- case TLS1_VERSION:
- return &TLSv1_enc_data;
-
- case DTLS1_VERSION:
- case TLS1_1_VERSION:
- return &TLSv1_1_enc_data;
-
- case DTLS1_2_VERSION:
- case TLS1_2_VERSION:
- return &TLSv1_2_enc_data;
-
- default:
- return NULL;
- }
- }
-
- uint16_t ssl3_get_max_server_version(const SSL *s) {
- uint16_t max_version;
-
- if (SSL_IS_DTLS(s)) {
- max_version = (s->max_version != 0) ? s->max_version : DTLS1_2_VERSION;
- if (!(s->options & SSL_OP_NO_DTLSv1_2) && DTLS1_2_VERSION >= max_version) {
- return DTLS1_2_VERSION;
- }
- if (!(s->options & SSL_OP_NO_DTLSv1) && DTLS1_VERSION >= max_version) {
- return DTLS1_VERSION;
- }
- return 0;
- }
-
- max_version = (s->max_version != 0) ? s->max_version : TLS1_2_VERSION;
- if (!(s->options & SSL_OP_NO_TLSv1_2) && TLS1_2_VERSION <= max_version) {
- return TLS1_2_VERSION;
- }
- if (!(s->options & SSL_OP_NO_TLSv1_1) && TLS1_1_VERSION <= max_version) {
- return TLS1_1_VERSION;
- }
- if (!(s->options & SSL_OP_NO_TLSv1) && TLS1_VERSION <= max_version) {
- return TLS1_VERSION;
- }
- if (!(s->options & SSL_OP_NO_SSLv3) && SSL3_VERSION <= max_version) {
- return SSL3_VERSION;
- }
- return 0;
- }
-
- uint16_t ssl3_get_mutual_version(SSL *s, uint16_t client_version) {
- uint16_t version = 0;
-
- if (SSL_IS_DTLS(s)) {
- /* Clamp client_version to max_version. */
- if (s->max_version != 0 && client_version < s->max_version) {
- client_version = s->max_version;
- }
-
- if (client_version <= DTLS1_2_VERSION && !(s->options & SSL_OP_NO_DTLSv1_2)) {
- version = DTLS1_2_VERSION;
- } else if (client_version <= DTLS1_VERSION &&
- !(s->options & SSL_OP_NO_DTLSv1)) {
- version = DTLS1_VERSION;
- }
-
- /* Check against min_version. */
- if (version != 0 && s->min_version != 0 && version > s->min_version) {
- return 0;
- }
- return version;
- } else {
- /* Clamp client_version to max_version. */
- if (s->max_version != 0 && client_version > s->max_version) {
- client_version = s->max_version;
- }
-
- if (client_version >= TLS1_2_VERSION && !(s->options & SSL_OP_NO_TLSv1_2)) {
- version = TLS1_2_VERSION;
- } else if (client_version >= TLS1_1_VERSION &&
- !(s->options & SSL_OP_NO_TLSv1_1)) {
- version = TLS1_1_VERSION;
- } else if (client_version >= TLS1_VERSION && !(s->options & SSL_OP_NO_TLSv1)) {
- version = TLS1_VERSION;
- } else if (client_version >= SSL3_VERSION && !(s->options & SSL_OP_NO_SSLv3)) {
- version = SSL3_VERSION;
- }
-
- /* Check against min_version. */
- if (version != 0 && s->min_version != 0 && version < s->min_version) {
- return 0;
- }
- return version;
- }
- }
-
- uint16_t ssl3_get_max_client_version(SSL *s) {
- unsigned long options = s->options;
- uint16_t version = 0;
-
- /* 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 TLS 1.2 in a future-proof way.
- *
- * By this scheme, the maximum version is the lowest version V such that V is
- * enabled and V+1 is disabled or unimplemented. */
- if (SSL_IS_DTLS(s)) {
- if (!(options & SSL_OP_NO_DTLSv1_2)) {
- version = DTLS1_2_VERSION;
- }
- if (!(options & SSL_OP_NO_DTLSv1) && (options & SSL_OP_NO_DTLSv1_2)) {
- version = DTLS1_VERSION;
- }
- if (s->max_version != 0 && version < s->max_version) {
- version = s->max_version;
- }
- } else {
- if (!(options & SSL_OP_NO_TLSv1_2)) {
- version = TLS1_2_VERSION;
- }
- if (!(options & SSL_OP_NO_TLSv1_1) && (options & SSL_OP_NO_TLSv1_2)) {
- version = TLS1_1_VERSION;
- }
- if (!(options & SSL_OP_NO_TLSv1) && (options & SSL_OP_NO_TLSv1_1)) {
- version = TLS1_VERSION;
- }
- if (!(options & SSL_OP_NO_SSLv3) && (options & SSL_OP_NO_TLSv1)) {
- version = SSL3_VERSION;
- }
- if (s->max_version != 0 && version > s->max_version) {
- version = s->max_version;
- }
- }
-
- return version;
- }
-
- int ssl3_is_version_enabled(SSL *s, uint16_t version) {
- if (SSL_IS_DTLS(s)) {
- if (s->max_version != 0 && version < s->max_version) {
- return 0;
- }
- if (s->min_version != 0 && version > s->min_version) {
- return 0;
- }
-
- switch (version) {
- case DTLS1_VERSION:
- return !(s->options & SSL_OP_NO_DTLSv1);
-
- case DTLS1_2_VERSION:
- return !(s->options & SSL_OP_NO_DTLSv1_2);
-
- default:
- return 0;
- }
- } else {
- if (s->max_version != 0 && version > s->max_version) {
- return 0;
- }
- if (s->min_version != 0 && version < s->min_version) {
- return 0;
- }
-
- switch (version) {
- case SSL3_VERSION:
- return !(s->options & SSL_OP_NO_SSLv3);
-
- case TLS1_VERSION:
- return !(s->options & SSL_OP_NO_TLSv1);
-
- case TLS1_1_VERSION:
- return !(s->options & SSL_OP_NO_TLSv1_1);
-
- case TLS1_2_VERSION:
- return !(s->options & SSL_OP_NO_TLSv1_2);
-
- default:
- return 0;
- }
- }
- }
-
- uint16_t ssl3_version_from_wire(SSL *s, uint16_t wire_version) {
- if (!SSL_IS_DTLS(s)) {
- return wire_version;
- }
-
- uint16_t tls_version = ~wire_version;
- uint16_t version = tls_version + 0x0201;
- /* If either component overflowed, clamp it so comparisons still work. */
- if ((version >> 8) < (tls_version >> 8)) {
- version = 0xff00 | (version & 0xff);
- }
- if ((version & 0xff) < (tls_version & 0xff)) {
- version = (version & 0xff00) | 0xff;
- }
- /* DTLS 1.0 maps to TLS 1.1, not TLS 1.0. */
- if (version == TLS1_VERSION) {
- version = TLS1_1_VERSION;
- }
- return version;
- }
-
- int SSL_cache_hit(SSL *s) { return s->hit; }
-
- int SSL_is_server(SSL *s) { return s->server; }
-
- 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_enable_fastradio_padding(SSL *s, char on_off) {
- s->fastradio_padding = on_off;
- }
-
- void SSL_set_reject_peer_renegotiations(SSL *s, int reject) {
- s->reject_peer_renegotiations = !!reject;
- }
-
- const SSL_CIPHER *SSL_get_cipher_by_value(uint16_t value) {
- return ssl3_get_cipher_by_value(value);
- }
-
- int SSL_get_rc4_state(const SSL *ssl, const RC4_KEY **read_key,
- const RC4_KEY **write_key) {
- if (ssl->aead_read_ctx == NULL || ssl->aead_write_ctx == NULL) {
- return 0;
- }
-
- return EVP_AEAD_CTX_get_rc4_state(&ssl->aead_read_ctx->ctx, read_key) &&
- EVP_AEAD_CTX_get_rc4_state(&ssl->aead_write_ctx->ctx, write_key);
- }
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