ssl_lib.c 95.2 KB
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/*
 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
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 */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * 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.
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 *
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 * 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).
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 *
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 * 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.
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 *
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 * 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 :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * 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.
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 *
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 * 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.]
 */
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/* ====================================================================
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 * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
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 *
 * 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
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 *    notice, this list of conditions and the following disclaimer.
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 *
 * 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).
 *
 */
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/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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 * ECC cipher suite support in OpenSSL originally developed by
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 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */
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/* ====================================================================
 * 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.
 */
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#ifdef REF_CHECK
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# include <assert.h>
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#endif
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#include <stdio.h>
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#include "ssl_locl.h"
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#include <openssl/objects.h>
#include <openssl/lhash.h>
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#include <openssl/x509v3.h>
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#include <openssl/rand.h>
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#include <openssl/ocsp.h>
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#ifndef OPENSSL_NO_DH
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# include <openssl/dh.h>
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#endif
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#ifndef OPENSSL_NO_ENGINE
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# include <openssl/engine.h>
#endif

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const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
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SSL3_ENC_METHOD ssl3_undef_enc_method = {
    /*
     * evil casts, but these functions are only called if there's a library
     * bug
     */
    (int (*)(SSL *, int))ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
    ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, unsigned char *, int))
        ssl_undefined_function,
    (int (*)(SSL *, int))ssl_undefined_function,
    (int (*)(SSL *, const char *, int, unsigned char *))
        ssl_undefined_function,
    0,                          /* finish_mac_length */
    (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
    NULL,                       /* client_finished_label */
    0,                          /* client_finished_label_len */
    NULL,                       /* server_finished_label */
    0,                          /* server_finished_label_len */
    (int (*)(int))ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, size_t, const char *,
             size_t, const unsigned char *, size_t,
             int use_context))ssl_undefined_function,
};
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static void clear_ciphers(SSL *s)
{
    /* clear the current cipher */
    ssl_clear_cipher_ctx(s);
    ssl_clear_hash_ctx(&s->read_hash);
    ssl_clear_hash_ctx(&s->write_hash);
}

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int SSL_clear(SSL *s)
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{
    if (s->method == NULL) {
        SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
        return (0);
    }
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    if (ssl_clear_bad_session(s)) {
        SSL_SESSION_free(s->session);
        s->session = NULL;
    }
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    s->error = 0;
    s->hit = 0;
    s->shutdown = 0;
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    if (s->renegotiate) {
        SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
        return 0;
    }
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    ossl_statem_clear(s);
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    s->version = s->method->version;
    s->client_version = s->version;
    s->rwstate = SSL_NOTHING;
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    BUF_MEM_free(s->init_buf);
    s->init_buf = NULL;
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    clear_ciphers(s);
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    s->first_packet = 0;
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    /*
     * Check to see if we were changed into a different method, if so, revert
     * back if we are not doing session-id reuse.
     */
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    if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
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        && (s->method != s->ctx->method)) {
        s->method->ssl_free(s);
        s->method = s->ctx->method;
        if (!s->method->ssl_new(s))
            return (0);
    } else
        s->method->ssl_clear(s);
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    RECORD_LAYER_clear(&s->rlayer);
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    return (1);
}
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/** Used to change an SSL_CTXs default SSL method type */
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int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
{
    STACK_OF(SSL_CIPHER) *sk;

    ctx->method = meth;

    sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
                                &(ctx->cipher_list_by_id),
                                SSL_DEFAULT_CIPHER_LIST, ctx->cert);
    if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
        SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
               SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
        return (0);
    }
    return (1);
}
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SSL *SSL_new(SSL_CTX *ctx)
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{
    SSL *s;

    if (ctx == NULL) {
        SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
        return (NULL);
    }
    if (ctx->method == NULL) {
        SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
        return (NULL);
    }

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    s = OPENSSL_zalloc(sizeof(*s));
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    if (s == NULL)
        goto err;

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    RECORD_LAYER_init(&s->rlayer, s);
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    s->options = ctx->options;
    s->mode = ctx->mode;
    s->max_cert_list = ctx->max_cert_list;
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    s->references = 1;
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    /*
     * Earlier library versions used to copy the pointer to the CERT, not
     * its contents; only when setting new parameters for the per-SSL
     * copy, ssl_cert_new would be called (and the direct reference to
     * the per-SSL_CTX settings would be lost, but those still were
     * indirectly accessed for various purposes, and for that reason they
     * used to be known as s->ctx->default_cert). Now we don't look at the
     * SSL_CTX's CERT after having duplicated it once.
     */
    s->cert = ssl_cert_dup(ctx->cert);
    if (s->cert == NULL)
        goto err;
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    RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
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    s->msg_callback = ctx->msg_callback;
    s->msg_callback_arg = ctx->msg_callback_arg;
    s->verify_mode = ctx->verify_mode;
    s->not_resumable_session_cb = ctx->not_resumable_session_cb;
    s->sid_ctx_length = ctx->sid_ctx_length;
    OPENSSL_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();
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    if (s->param == NULL)
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        goto err;
    X509_VERIFY_PARAM_inherit(s->param, ctx->param);
    s->quiet_shutdown = ctx->quiet_shutdown;
    s->max_send_fragment = ctx->max_send_fragment;
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    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;
    s->tlsext_status_type = -1;
    s->tlsext_status_expected = 0;
    s->tlsext_ocsp_ids = NULL;
    s->tlsext_ocsp_exts = NULL;
    s->tlsext_ocsp_resp = NULL;
    s->tlsext_ocsp_resplen = -1;
    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
    s->initial_ctx = ctx;
# ifndef OPENSSL_NO_EC
    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);
        if (!s->tlsext_ellipticcurvelist)
            goto err;
        s->tlsext_ellipticcurvelist_length =
            ctx->tlsext_ellipticcurvelist_length;
    }
# endif
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# ifndef OPENSSL_NO_NEXTPROTONEG
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    s->next_proto_negotiated = NULL;
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# endif
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    if (s->ctx->alpn_client_proto_list) {
        s->alpn_client_proto_list =
            OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
        if (s->alpn_client_proto_list == NULL)
            goto err;
        memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
               s->ctx->alpn_client_proto_list_len);
        s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
    }
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    s->verify_result = X509_V_OK;
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    s->default_passwd_callback = ctx->default_passwd_callback;
    s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;

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    s->method = ctx->method;
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    if (!s->method->ssl_new(s))
        goto err;
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    s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
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    if (!SSL_clear(s))
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        goto err;
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    CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
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#ifndef OPENSSL_NO_PSK
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    s->psk_client_callback = ctx->psk_client_callback;
    s->psk_server_callback = ctx->psk_server_callback;
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#endif

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    return (s);
 err:
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    SSL_free(s);
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    SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
    return (NULL);
}
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int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
                                   unsigned int sid_ctx_len)
{
    if (sid_ctx_len > sizeof ctx->sid_ctx) {
        SSLerr(SSL_F_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);
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    return 1;
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}
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int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
                               unsigned int sid_ctx_len)
{
    if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
        SSLerr(SSL_F_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);
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    return 1;
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}
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int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
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{
    CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
    ctx->generate_session_id = cb;
    CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
    return 1;
}
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int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
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{
    CRYPTO_w_lock(CRYPTO_LOCK_SSL);
    ssl->generate_session_id = cb;
    CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
    return 1;
}
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int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
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                                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);
}
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int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
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{
    return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
}
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int SSL_set_purpose(SSL *s, int purpose)
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{
    return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
}
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int SSL_CTX_set_trust(SSL_CTX *s, int trust)
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{
    return X509_VERIFY_PARAM_set_trust(s->param, trust);
}
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int SSL_set_trust(SSL *s, int trust)
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{
    return X509_VERIFY_PARAM_set_trust(s->param, trust);
}
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int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
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{
    return X509_VERIFY_PARAM_set1(ctx->param, vpm);
}
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int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
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{
    return X509_VERIFY_PARAM_set1(ssl->param, vpm);
}
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X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
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{
    return ctx->param;
}
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X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
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{
    return ssl->param;
}
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void SSL_certs_clear(SSL *s)
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{
    ssl_cert_clear_certs(s->cert);
}
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void SSL_free(SSL *s)
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{
    int i;
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    if (s == NULL)
        return;
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    i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
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#ifdef REF_PRINT
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    REF_PRINT("SSL", s);
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#endif
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    if (i > 0)
        return;
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#ifdef REF_CHECK
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    if (i < 0) {
        fprintf(stderr, "SSL_free, bad reference count\n");
        abort();                /* ok */
    }
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#endif
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    X509_VERIFY_PARAM_free(s->param);
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    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_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;
    }
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    BIO_free_all(s->rbio);
    if (s->wbio != s->rbio)
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        BIO_free_all(s->wbio);

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    BUF_MEM_free(s->init_buf);
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    /* add extra stuff */
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    sk_SSL_CIPHER_free(s->cipher_list);
    sk_SSL_CIPHER_free(s->cipher_list_by_id);
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    /* Make the next call work :-) */
    if (s->session != NULL) {
        ssl_clear_bad_session(s);
        SSL_SESSION_free(s->session);
    }

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    clear_ciphers(s);
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    ssl_cert_free(s->cert);
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    /* Free up if allocated */
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    OPENSSL_free(s->tlsext_hostname);
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    SSL_CTX_free(s->initial_ctx);
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#ifndef OPENSSL_NO_EC
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    OPENSSL_free(s->tlsext_ecpointformatlist);
    OPENSSL_free(s->tlsext_ellipticcurvelist);
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#endif                         /* OPENSSL_NO_EC */
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    sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
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    sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
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    OPENSSL_free(s->tlsext_ocsp_resp);
    OPENSSL_free(s->alpn_client_proto_list);
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Rich Salz 已提交
573
    sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
574 575 576 577

    if (s->method != NULL)
        s->method->ssl_free(s);

578
    RECORD_LAYER_release(&s->rlayer);
M
Matt Caswell 已提交
579

R
Rich Salz 已提交
580
    SSL_CTX_free(s->ctx);
D
Dr. Stephen Henson 已提交
581

582
#if !defined(OPENSSL_NO_NEXTPROTONEG)
R
Rich Salz 已提交
583
    OPENSSL_free(s->next_proto_negotiated);
B
Ben Laurie 已提交
584 585
#endif

P
Piotr Sikora 已提交
586
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
587
    sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
588 589 590 591 592
#endif

    OPENSSL_free(s);
}

593 594
void SSL_set_rbio(SSL *s, BIO *rbio)
{
R
Rich Salz 已提交
595
    if (s->rbio != rbio)
596 597 598 599 600
        BIO_free_all(s->rbio);
    s->rbio = rbio;
}

void SSL_set_wbio(SSL *s, BIO *wbio)
601 602 603 604 605 606 607 608 609 610
{
    /*
     * 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;
        }
    }
R
Rich Salz 已提交
611
    if (s->wbio != wbio && s->rbio != s->wbio)
612 613 614
        BIO_free_all(s->wbio);
    s->wbio = wbio;
}
615

616 617 618 619 620 621
void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
{
    SSL_set_wbio(s, wbio);
    SSL_set_rbio(s, rbio);
}

B
Ben Laurie 已提交
622
BIO *SSL_get_rbio(const SSL *s)
623 624 625
{
    return (s->rbio);
}
626

B
Ben Laurie 已提交
627
BIO *SSL_get_wbio(const SSL *s)
628 629 630
{
    return (s->wbio);
}
631

B
Ben Laurie 已提交
632
int SSL_get_fd(const SSL *s)
633 634 635
{
    return (SSL_get_rfd(s));
}
636

B
Ben Laurie 已提交
637
int SSL_get_rfd(const SSL *s)
638 639 640 641 642 643 644 645 646 647
{
    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);
}
648

B
Ben Laurie 已提交
649
int SSL_get_wfd(const SSL *s)
650 651 652 653 654 655 656 657 658 659
{
    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);
}
660

661
#ifndef OPENSSL_NO_SOCK
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678
int SSL_set_fd(SSL *s, int fd)
{
    int ret = 0;
    BIO *bio = NULL;

    bio = BIO_new(BIO_s_socket());

    if (bio == NULL) {
        SSLerr(SSL_F_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);
}
679

680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
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_SOCKET)
        || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
        bio = BIO_new(BIO_s_socket());

        if (bio == NULL) {
            SSLerr(SSL_F_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_SOCKET)
        || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
        bio = BIO_new(BIO_s_socket());

        if (bio == NULL) {
            SSLerr(SSL_F_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);
}
#endif
724 725

/* return length of latest Finished message we sent, copy to 'buf' */
B
Ben Laurie 已提交
726
size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
727 728 729 730 731 732 733 734 735 736 737
{
    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;
}
738 739

/* return length of latest Finished message we expected, copy to 'buf' */
B
Ben Laurie 已提交
740
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
741 742
{
    size_t ret = 0;
743

744 745 746 747 748 749 750 751
    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;
}
752

B
Ben Laurie 已提交
753
int SSL_get_verify_mode(const SSL *s)
754 755 756
{
    return (s->verify_mode);
}
757

B
Ben Laurie 已提交
758
int SSL_get_verify_depth(const SSL *s)
759 760 761
{
    return X509_VERIFY_PARAM_get_depth(s->param);
}
762

763 764 765
int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
    return (s->verify_callback);
}
766

B
Ben Laurie 已提交
767
int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
768 769 770
{
    return (ctx->verify_mode);
}
771

B
Ben Laurie 已提交
772
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
{
    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)
{
796
    RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
797
}
798

B
Ben Laurie 已提交
799
int SSL_get_read_ahead(const SSL *s)
800
{
801
    return RECORD_LAYER_get_read_ahead(&s->rlayer);
802
}
803

B
Ben Laurie 已提交
804
int SSL_pending(const SSL *s)
805 806 807 808 809 810 811 812 813 814
{
    /*
     * 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));
}
815

B
Ben Laurie 已提交
816
X509 *SSL_get_peer_certificate(const SSL *s)
817 818
{
    X509 *r;
819

820 821 822 823
    if ((s == NULL) || (s->session == NULL))
        r = NULL;
    else
        r = s->session->peer;
824

825 826
    if (r == NULL)
        return (r);
827

D
Dr. Stephen Henson 已提交
828
    X509_up_ref(r);
829 830 831

    return (r);
}
832

B
Ben Laurie 已提交
833
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
834 835 836
{
    STACK_OF(X509) *r;

837
    if ((s == NULL) || (s->session == NULL))
838 839
        r = NULL;
    else
840
        r = s->session->peer_chain;
841 842 843 844 845 846 847 848 849 850 851 852 853

    /*
     * If we are a client, cert_chain includes the peer's own certificate; if
     * we are a server, it does not.
     */

    return (r);
}

/*
 * Now in theory, since the calling process own 't' it should be safe to
 * modify.  We need to be able to read f without being hassled
 */
M
Matt Caswell 已提交
854
int SSL_copy_session_id(SSL *t, const SSL *f)
855 856
{
    /* Do we need to to SSL locking? */
V
Viktor Dukhovni 已提交
857
    if (!SSL_set_session(t, SSL_get_session(f))) {
M
Matt Caswell 已提交
858
        return 0;
M
Matt Caswell 已提交
859
    }
860 861

    /*
M
Matt Caswell 已提交
862
     * what if we are setup for one protocol version but want to talk another
863 864 865 866 867 868 869
     */
    if (t->method != f->method) {
        t->method->ssl_free(t); /* cleanup current */
        t->method = f->method;  /* change method */
        t->method->ssl_new(t);  /* setup new */
    }

K
Kurt Roeckx 已提交
870 871 872
    CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
    ssl_cert_free(t->cert);
    t->cert = f->cert;
V
Viktor Dukhovni 已提交
873
    if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
M
Matt Caswell 已提交
874
        return 0;
M
Matt Caswell 已提交
875
    }
M
Matt Caswell 已提交
876 877

    return 1;
878
}
879

880
/* Fix this so it checks all the valid key/cert options */
B
Ben Laurie 已提交
881
int SSL_CTX_check_private_key(const SSL_CTX *ctx)
882 883
{
    if ((ctx == NULL) ||
K
Kurt Roeckx 已提交
884
        (ctx->cert->key->x509 == NULL)) {
885 886 887 888 889 890 891 892 893 894 895 896
        SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
               SSL_R_NO_CERTIFICATE_ASSIGNED);
        return (0);
    }
    if (ctx->cert->key->privatekey == NULL) {
        SSLerr(SSL_F_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));
}
897

898
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
899
int SSL_check_private_key(const SSL *ssl)
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
{
    if (ssl == NULL) {
        SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
        return (0);
    }
    if (ssl->cert->key->x509 == NULL) {
        SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
        return (0);
    }
    if (ssl->cert->key->privatekey == NULL) {
        SSLerr(SSL_F_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));
}
916

917
int SSL_accept(SSL *s)
918 919 920 921
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_accept_state(s);
922

923 924
    return (s->method->ssl_accept(s));
}
925

926
int SSL_connect(SSL *s)
927 928 929 930
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_connect_state(s);
931

932 933
    return (s->method->ssl_connect(s));
}
934

B
Ben Laurie 已提交
935
long SSL_get_default_timeout(const SSL *s)
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
{
    return (s->method->get_timeout());
}

int SSL_read(SSL *s, void *buf, int num)
{
    if (s->handshake_func == 0) {
        SSLerr(SSL_F_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) {
        SSLerr(SSL_F_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) {
        SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
        return -1;
    }

    if (s->shutdown & SSL_SENT_SHUTDOWN) {
        s->rwstate = SSL_NOTHING;
        SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
        return (-1);
    }
    return (s->method->ssl_write(s, buf, num));
}
981

982
int SSL_shutdown(SSL *s)
983 984 985 986 987 988 989 990 991 992 993 994 995
{
    /*
     * 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) {
        SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
        return -1;
    }

996
    if (!SSL_in_init(s))
997 998 999 1000
        return (s->method->ssl_shutdown(s));
    else
        return (1);
}
1001

1002
int SSL_renegotiate(SSL *s)
1003 1004 1005
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
D
Dr. Stephen Henson 已提交
1006

1007
    s->new_session = 1;
D
Dr. Stephen Henson 已提交
1008

1009 1010
    return (s->method->ssl_renegotiate(s));
}
1011

D
Dr. Stephen Henson 已提交
1012
int SSL_renegotiate_abbreviated(SSL *s)
1013 1014 1015
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
B
Bodo Möller 已提交
1016

1017
    s->new_session = 0;
B
Bodo Möller 已提交
1018

1019 1020
    return (s->method->ssl_renegotiate(s));
}
D
Dr. Stephen Henson 已提交
1021

1022
int SSL_renegotiate_pending(SSL *s)
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
{
    /*
     * 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:
1037
        return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1038
    case SSL_CTRL_SET_READ_AHEAD:
1039 1040
        l = RECORD_LAYER_get_read_ahead(&s->rlayer);
        RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
        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_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;
        else
            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) {
D
Dr. Stephen Henson 已提交
1078
            if (s->s3->tmp.ciphers_raw == NULL)
1079
                return 0;
D
Dr. Stephen Henson 已提交
1080 1081
            *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
            return (int)s->s3->tmp.ciphers_rawlen;
E
Emilia Kasper 已提交
1082 1083 1084
        } else {
            return TLS_CIPHER_LEN;
        }
1085
    case SSL_CTRL_GET_EXTMS_SUPPORT:
M
Matt Caswell 已提交
1086
        if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1087 1088
		return -1;
	if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1089 1090 1091
            return 1;
        else
            return 0;
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
    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));
    }
}
1111

B
Ben Laurie 已提交
1112
LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
{
    return ctx->sessions;
}

long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
{
    long l;
    /* For some cases with ctx == NULL perform syntax checks */
    if (ctx == NULL) {
        switch (cmd) {
1123
#ifndef OPENSSL_NO_EC
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226
        case SSL_CTRL_SET_CURVES_LIST:
            return tls1_set_curves_list(NULL, NULL, parg);
#endif
        case SSL_CTRL_SET_SIGALGS_LIST:
        case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
            return tls1_set_sigalgs_list(NULL, parg, 0);
        default:
            return 0;
        }
    }

    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:
        return (ctx->stats.sess_connect);
    case SSL_CTRL_SESS_CONNECT_GOOD:
        return (ctx->stats.sess_connect_good);
    case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
        return (ctx->stats.sess_connect_renegotiate);
    case SSL_CTRL_SESS_ACCEPT:
        return (ctx->stats.sess_accept);
    case SSL_CTRL_SESS_ACCEPT_GOOD:
        return (ctx->stats.sess_accept_good);
    case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
        return (ctx->stats.sess_accept_renegotiate);
    case SSL_CTRL_SESS_HIT:
        return (ctx->stats.sess_hit);
    case SSL_CTRL_SESS_CB_HIT:
        return (ctx->stats.sess_cb_hit);
    case SSL_CTRL_SESS_MISSES:
        return (ctx->stats.sess_miss);
    case SSL_CTRL_SESS_TIMEOUTS:
        return (ctx->stats.sess_timeout);
    case SSL_CTRL_SESS_CACHE_FULL:
        return (ctx->stats.sess_cache_full);
    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));
    }
}
1227

1228
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1229
{
1230 1231 1232 1233 1234
    if (a->id > b->id)
        return 1;
    if (a->id < b->id)
        return -1;
    return 0;
1235 1236 1237 1238 1239
}

int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
                          const SSL_CIPHER *const *bp)
{
1240 1241 1242 1243 1244
    if ((*ap)->id > (*bp)->id)
        return 1;
    if ((*ap)->id < (*bp)->id)
        return -1;
    return 0;
1245
}
1246

1247
/** return a STACK of the ciphers available for the SSL and in order of
1248
 * preference */
B
Ben Laurie 已提交
1249
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260
{
    if (s != NULL) {
        if (s->cipher_list != NULL) {
            return (s->cipher_list);
        } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
            return (s->ctx->cipher_list);
        }
    }
    return (NULL);
}

1261 1262 1263 1264 1265 1266 1267
STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
{
    if ((s == NULL) || (s->session == NULL) || !s->server)
        return NULL;
    return s->session->ciphers;
}

1268
STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290
{
    STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
    int i;
    ciphers = SSL_get_ciphers(s);
    if (!ciphers)
        return NULL;
    ssl_set_client_disabled(s);
    for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
        const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
        if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
            if (!sk)
                sk = sk_SSL_CIPHER_new_null();
            if (!sk)
                return NULL;
            if (!sk_SSL_CIPHER_push(sk, c)) {
                sk_SSL_CIPHER_free(sk);
                return NULL;
            }
        }
    }
    return sk;
}
1291

1292
/** return a STACK of the ciphers available for the SSL and in order of
1293
 * algorithm id */
B
Ben Laurie 已提交
1294
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
{
    if (s != NULL) {
        if (s->cipher_list_by_id != NULL) {
            return (s->cipher_list_by_id);
        } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
            return (s->ctx->cipher_list_by_id);
        }
    }
    return (NULL);
}
1305

1306
/** The old interface to get the same thing as SSL_get_ciphers() */
1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321
const char *SSL_get_cipher_list(const SSL *s, int n)
{
    SSL_CIPHER *c;
    STACK_OF(SSL_CIPHER) *sk;

    if (s == NULL)
        return (NULL);
    sk = SSL_get_ciphers(s);
    if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
        return (NULL);
    c = sk_SSL_CIPHER_value(sk, n);
    if (c == NULL)
        return (NULL);
    return (c->name);
}
1322

1323
/** specify the ciphers to be used by default by the SSL_CTX */
1324
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344
{
    STACK_OF(SSL_CIPHER) *sk;

    sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
                                &ctx->cipher_list_by_id, str, ctx->cert);
    /*
     * 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) {
        SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
        return 0;
    }
    return 1;
}
1345

1346
/** specify the ciphers to be used by the SSL */
1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361
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, s->cert);
    /* see comment in SSL_CTX_set_cipher_list */
    if (sk == NULL)
        return 0;
    else if (sk_SSL_CIPHER_num(sk) == 0) {
        SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
        return 0;
    }
    return 1;
}
1362

1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398
char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
{
    char *p;
    STACK_OF(SSL_CIPHER) *sk;
    SSL_CIPHER *c;
    int i;

    if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
        return (NULL);

    p = buf;
    sk = s->session->ciphers;

    if (sk_SSL_CIPHER_num(sk) == 0)
        return NULL;

    for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
        int n;

        c = sk_SSL_CIPHER_value(sk, i);
        n = strlen(c->name);
        if (n + 1 > len) {
            if (p != buf)
                --p;
            *p = '\0';
            return buf;
        }
        strcpy(p, c->name);
        p += n;
        *(p++) = ':';
        len -= n + 1;
    }
    p[-1] = '\0';
    return (buf);
}

1399
/** return a servername extension value if provided in Client Hello, or NULL.
1400
 * So far, only host_name types are defined (RFC 3546).
1401 1402
 */

1403
const char *SSL_get_servername(const SSL *s, const int type)
1404 1405 1406
{
    if (type != TLSEXT_NAMETYPE_host_name)
        return NULL;
B
Bodo Möller 已提交
1407

1408 1409 1410
    return s->session && !s->tlsext_hostname ?
        s->session->tlsext_hostname : s->tlsext_hostname;
}
1411

1412
int SSL_get_servername_type(const SSL *s)
1413 1414 1415 1416 1417 1418 1419
{
    if (s->session
        && (!s->tlsext_hostname ? s->session->
            tlsext_hostname : s->tlsext_hostname))
        return TLSEXT_NAMETYPE_host_name;
    return -1;
}
B
Ben Laurie 已提交
1420

1421 1422
/*
 * SSL_select_next_proto implements the standard protocol selection. It is
B
Ben Laurie 已提交
1423
 * expected that this function is called from the callback set by
1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
 * 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.
B
Ben Laurie 已提交
1440
 */
1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478
int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
                          const unsigned char *server,
                          unsigned int server_len,
                          const unsigned char *client,
                          unsigned int client_len)
{
    unsigned int i, j;
    const unsigned char *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 = (unsigned char *)result + 1;
    *outlen = result[0];
    return status;
}
B
Ben Laurie 已提交
1479

1480
#ifndef OPENSSL_NO_NEXTPROTONEG
1481 1482 1483 1484 1485 1486
/*
 * 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
B
Ben Laurie 已提交
1487 1488
 * provided by the callback.
 */
1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522
void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **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 unsigned char
                                                      **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
B
Ben Laurie 已提交
1523 1524
 * 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|).
1525 1526 1527 1528 1529
 * 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.
B
Ben Laurie 已提交
1530
 */
1531 1532 1533 1534 1535 1536 1537 1538 1539 1540
void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
                                      int (*cb) (SSL *s, unsigned char **out,
                                                 unsigned char *outlen,
                                                 const unsigned char *in,
                                                 unsigned int inlen,
                                                 void *arg), void *arg)
{
    ctx->next_proto_select_cb = cb;
    ctx->next_proto_select_cb_arg = arg;
}
1541
#endif
1542

1543 1544
/*
 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
A
Adam Langley 已提交
1545
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1546 1547 1548 1549 1550
 * length-prefixed strings). Returns 0 on success.
 */
int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
                            unsigned protos_len)
{
R
Rich Salz 已提交
1551
    OPENSSL_free(ctx->alpn_client_proto_list);
1552
    ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1553
    if (ctx->alpn_client_proto_list == NULL)
1554 1555 1556 1557 1558 1559 1560 1561 1562
        return 1;
    memcpy(ctx->alpn_client_proto_list, protos, protos_len);
    ctx->alpn_client_proto_list_len = protos_len;

    return 0;
}

/*
 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
A
Adam Langley 已提交
1563
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1564 1565 1566 1567 1568
 * length-prefixed strings). Returns 0 on success.
 */
int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
                        unsigned protos_len)
{
R
Rich Salz 已提交
1569
    OPENSSL_free(ssl->alpn_client_proto_list);
1570
    ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1571
    if (ssl->alpn_client_proto_list == NULL)
1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601
        return 1;
    memcpy(ssl->alpn_client_proto_list, protos, protos_len);
    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 unsigned char **out,
                                           unsigned char *outlen,
                                           const unsigned char *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.
 */
A
Adam Langley 已提交
1602
void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
                            unsigned *len)
{
    *data = NULL;
    if (ssl->s3)
        *data = ssl->s3->alpn_selected;
    if (*data == NULL)
        *len = 0;
    else
        *len = ssl->s3->alpn_selected_len;
}

1614

1615
int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1616 1617 1618 1619 1620 1621
                               const char *label, size_t llen,
                               const unsigned char *p, size_t plen,
                               int use_context)
{
    if (s->version < TLS1_VERSION)
        return -1;
B
Ben Laurie 已提交
1622

1623 1624 1625 1626
    return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
                                                       llen, p, plen,
                                                       use_context);
}
B
Ben Laurie 已提交
1627

B
Ben Laurie 已提交
1628
static unsigned long ssl_session_hash(const SSL_SESSION *a)
1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641
{
    unsigned long l;

    l = (unsigned long)
        ((unsigned int)a->session_id[0]) |
        ((unsigned int)a->session_id[1] << 8L) |
        ((unsigned long)a->session_id[2] << 16L) |
        ((unsigned long)a->session_id[3] << 24L);
    return (l);
}

/*
 * NB: If this function (or indeed the hash function which uses a sort of
1642
 * coarser function than this one) is changed, ensure
1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657
 * 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));
}

/*
 * These wrapper functions should remain rather than redeclaring
1658
 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1659 1660 1661
 * variable. The reason is that the functions aren't static, they're exposed
 * via ssl.h.
 */
B
Ben Laurie 已提交
1662 1663
static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1664

1665
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682
{
    SSL_CTX *ret = NULL;

    if (meth == NULL) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
        return (NULL);
    }

    if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
        return NULL;
    }

    if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
        goto err;
    }
R
Rich Salz 已提交
1683
    ret = OPENSSL_zalloc(sizeof(*ret));
1684 1685 1686 1687 1688 1689
    if (ret == NULL)
        goto err;

    ret->method = meth;
    ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
    ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
R
Rich Salz 已提交
1690
    /* We take the system default. */
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704
    ret->session_timeout = meth->get_timeout();
    ret->references = 1;
    ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
    ret->verify_mode = SSL_VERIFY_NONE;
    if ((ret->cert = ssl_cert_new()) == NULL)
        goto err;

    ret->sessions = lh_SSL_SESSION_new();
    if (ret->sessions == NULL)
        goto err;
    ret->cert_store = X509_STORE_new();
    if (ret->cert_store == NULL)
        goto err;

V
Viktor Dukhovni 已提交
1705
    if (!ssl_create_cipher_list(ret->method,
1706
                           &ret->cipher_list, &ret->cipher_list_by_id,
M
Matt Caswell 已提交
1707 1708
                           SSL_DEFAULT_CIPHER_LIST, ret->cert)
       || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1709 1710 1711 1712 1713
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
        goto err2;
    }

    ret->param = X509_VERIFY_PARAM_new();
1714
    if (ret->param == NULL)
1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735
        goto err;

    if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
        goto err2;
    }
    if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
        goto err2;
    }

    if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
        goto err;

    CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);

    /* No compression for DTLS */
    if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
        ret->comp_methods = SSL_COMP_get_compression_methods();

    ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1736

1737
    /* Setup RFC4507 ticket keys */
M
Matt Caswell 已提交
1738
    if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1739 1740 1741
        || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
        || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
        ret->options |= SSL_OP_NO_TICKET;
1742

B
Ben Laurie 已提交
1743
#ifndef OPENSSL_NO_SRP
V
Viktor Dukhovni 已提交
1744
    if (!SSL_CTX_SRP_CTX_init(ret))
M
Matt Caswell 已提交
1745
        goto err;
B
Ben Laurie 已提交
1746
#endif
1747
#ifndef OPENSSL_NO_ENGINE
1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774
# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
#  define eng_strx(x)     #x
#  define eng_str(x)      eng_strx(x)
    /* Use specific client engine automatically... ignore errors */
    {
        ENGINE *eng;
        eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
        if (!eng) {
            ERR_clear_error();
            ENGINE_load_builtin_engines();
            eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
        }
        if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
            ERR_clear_error();
    }
# endif
#endif
    /*
     * Default is to connect to non-RI servers. When RI is more widely
     * deployed might change this.
     */
    ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;

    return (ret);
 err:
    SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
 err2:
R
Rich Salz 已提交
1775
    SSL_CTX_free(ret);
1776 1777
    return (NULL);
}
1778

1779
void SSL_CTX_free(SSL_CTX *a)
1780 1781
{
    int i;
1782

1783 1784
    if (a == NULL)
        return;
1785

1786
    i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1787
#ifdef REF_PRINT
1788
    REF_PRINT("SSL_CTX", a);
1789
#endif
1790 1791
    if (i > 0)
        return;
1792
#ifdef REF_CHECK
1793 1794 1795 1796 1797 1798
    if (i < 0) {
        fprintf(stderr, "SSL_CTX_free, bad reference count\n");
        abort();                /* ok */
    }
#endif

R
Rich Salz 已提交
1799
    X509_VERIFY_PARAM_free(a->param);
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813

    /*
     * 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(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
R
Rich Salz 已提交
1814
    lh_SSL_SESSION_free(a->sessions);
R
Rich Salz 已提交
1815
    X509_STORE_free(a->cert_store);
R
Rich Salz 已提交
1816 1817
    sk_SSL_CIPHER_free(a->cipher_list);
    sk_SSL_CIPHER_free(a->cipher_list_by_id);
R
Rich Salz 已提交
1818
    ssl_cert_free(a->cert);
R
Rich Salz 已提交
1819 1820
    sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
    sk_X509_pop_free(a->extra_certs, X509_free);
1821
    a->comp_methods = NULL;
P
Piotr Sikora 已提交
1822
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
1823
    sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
P
Piotr Sikora 已提交
1824
#endif
B
Ben Laurie 已提交
1825
#ifndef OPENSSL_NO_SRP
1826
    SSL_CTX_SRP_CTX_free(a);
B
Ben Laurie 已提交
1827
#endif
1828
#ifndef OPENSSL_NO_ENGINE
1829 1830
    if (a->client_cert_engine)
        ENGINE_finish(a->client_cert_engine);
1831
#endif
B
Ben Laurie 已提交
1832

1833
#ifndef OPENSSL_NO_EC
R
Rich Salz 已提交
1834 1835
    OPENSSL_free(a->tlsext_ecpointformatlist);
    OPENSSL_free(a->tlsext_ellipticcurvelist);
B
Ben Laurie 已提交
1836
#endif
1837
    OPENSSL_free(a->alpn_client_proto_list);
B
Ben Laurie 已提交
1838

1839 1840
    OPENSSL_free(a);
}
1841

1842
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1843 1844 1845 1846 1847 1848 1849 1850 1851
{
    ctx->default_passwd_callback = cb;
}

void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
{
    ctx->default_passwd_callback_userdata = u;
}

M
Matt Caswell 已提交
1852 1853 1854 1855 1856 1857 1858 1859 1860 1861
void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
{
    s->default_passwd_callback = cb;
}

void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
{
    s->default_passwd_callback_userdata = u;
}

1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891
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);
}
1892

1893
void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
1894 1895
{
    CERT_PKEY *cpk;
1896
    CERT *c = s->cert;
1897
    uint32_t *pvalid = s->s3->tmp.valid_flags;
1898 1899 1900 1901
    int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
    int rsa_enc_export, dh_rsa_export, dh_dsa_export;
    int rsa_tmp_export, dh_tmp_export, kl;
    unsigned long mask_k, mask_a, emask_k, emask_a;
1902
#ifndef OPENSSL_NO_EC
1903 1904 1905 1906
    int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
    int have_ecdh_tmp, ecdh_ok;
    X509 *x = NULL;
    EVP_PKEY *ecc_pkey = NULL;
1907
    int pk_nid = 0, md_nid = 0;
1908
#endif
1909 1910
    if (c == NULL)
        return;
1911

1912
    kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1913

1914
#ifndef OPENSSL_NO_RSA
1915 1916 1917
    rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
    rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
                      (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
1918
#else
1919
    rsa_tmp = rsa_tmp_export = 0;
1920
#endif
1921
#ifndef OPENSSL_NO_DH
1922 1923 1924 1925
    dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
    dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
                                        (dh_tmp
                                         && DH_size(c->dh_tmp) * 8 <= kl));
1926
#else
1927
    dh_tmp = dh_tmp_export = 0;
1928 1929
#endif

1930
#ifndef OPENSSL_NO_EC
1931 1932 1933
    have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
#endif
    cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
1934
    rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
1935 1936
    rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1937
    rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
1938
    cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1939
    dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
1940
    cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
1941
    dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
1942 1943
    dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
1944
    dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
1945 1946
    dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_ECC]);
1947
#ifndef OPENSSL_NO_EC
1948
    have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
1949
#endif
1950 1951 1952 1953
    mask_k = 0;
    mask_a = 0;
    emask_k = 0;
    emask_a = 0;
1954

1955
#ifdef CIPHER_DEBUG
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
    fprintf(stderr,
            "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
            rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
            rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
#endif

    cpk = &(c->pkeys[SSL_PKEY_GOST01]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST01;
    }

    if (rsa_enc || (rsa_tmp && rsa_sign))
        mask_k |= SSL_kRSA;
    if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
        emask_k |= SSL_kRSA;
1972

1973 1974
    if (dh_tmp_export)
        emask_k |= SSL_kDHE;
1975

1976 1977
    if (dh_tmp)
        mask_k |= SSL_kDHE;
1978

1979 1980 1981 1982
    if (dh_rsa)
        mask_k |= SSL_kDHr;
    if (dh_rsa_export)
        emask_k |= SSL_kDHr;
1983

1984 1985 1986 1987
    if (dh_dsa)
        mask_k |= SSL_kDHd;
    if (dh_dsa_export)
        emask_k |= SSL_kDHd;
1988

1989
    if (mask_k & (SSL_kDHr | SSL_kDHd))
1990
        mask_a |= SSL_aDH;
1991

1992 1993 1994 1995
    if (rsa_enc || rsa_sign) {
        mask_a |= SSL_aRSA;
        emask_a |= SSL_aRSA;
    }
1996

1997 1998 1999 2000
    if (dsa_sign) {
        mask_a |= SSL_aDSS;
        emask_a |= SSL_aDSS;
    }
2001

2002 2003
    mask_a |= SSL_aNULL;
    emask_a |= SSL_aNULL;
2004

2005 2006 2007 2008
    /*
     * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
     * depending on the key usage extension.
     */
2009
#ifndef OPENSSL_NO_EC
2010
    if (have_ecc_cert) {
2011
        uint32_t ex_kusage;
2012 2013
        cpk = &c->pkeys[SSL_PKEY_ECC];
        x = cpk->x509;
2014 2015 2016
        ex_kusage = X509_get_key_usage(x);
        ecdh_ok = ex_kusage & X509v3_KU_KEY_AGREEMENT;
        ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2017
        if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2018 2019 2020 2021
            ecdsa_ok = 0;
        ecc_pkey = X509_get_pubkey(x);
        ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
        EVP_PKEY_free(ecc_pkey);
2022
        OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047
        if (ecdh_ok) {

            if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
                mask_k |= SSL_kECDHr;
                mask_a |= SSL_aECDH;
                if (ecc_pkey_size <= 163) {
                    emask_k |= SSL_kECDHr;
                    emask_a |= SSL_aECDH;
                }
            }

            if (pk_nid == NID_X9_62_id_ecPublicKey) {
                mask_k |= SSL_kECDHe;
                mask_a |= SSL_aECDH;
                if (ecc_pkey_size <= 163) {
                    emask_k |= SSL_kECDHe;
                    emask_a |= SSL_aECDH;
                }
            }
        }
        if (ecdsa_ok) {
            mask_a |= SSL_aECDSA;
            emask_a |= SSL_aECDSA;
        }
    }
2048
#endif
B
Bodo Möller 已提交
2049

2050
#ifndef OPENSSL_NO_EC
2051 2052 2053 2054
    if (have_ecdh_tmp) {
        mask_k |= SSL_kECDHE;
        emask_k |= SSL_kECDHE;
    }
B
Bodo Möller 已提交
2055
#endif
2056 2057

#ifndef OPENSSL_NO_PSK
2058 2059 2060 2061
    mask_k |= SSL_kPSK;
    mask_a |= SSL_aPSK;
    emask_k |= SSL_kPSK;
    emask_a |= SSL_aPSK;
2062 2063 2064 2065 2066 2067
    if (mask_k & SSL_kRSA)
        mask_k |= SSL_kRSAPSK;
    if (mask_k & SSL_kDHE)
        mask_k |= SSL_kDHEPSK;
    if (mask_k & SSL_kECDHE)
        mask_k |= SSL_kECDHEPSK;
2068 2069
#endif

2070 2071 2072 2073
    s->s3->tmp.mask_k = mask_k;
    s->s3->tmp.mask_a = mask_a;
    s->s3->tmp.export_mask_k = emask_k;
    s->s3->tmp.export_mask_a = emask_a;
2074
}
2075

2076 2077
#ifndef OPENSSL_NO_EC

2078
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2079 2080 2081 2082
{
    unsigned long alg_k, alg_a;
    EVP_PKEY *pkey = NULL;
    int keysize = 0;
2083
    int md_nid = 0, pk_nid = 0;
2084
    const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2085
    uint32_t ex_kusage = X509_get_key_usage(x);
2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100

    alg_k = cs->algorithm_mkey;
    alg_a = cs->algorithm_auth;

    if (SSL_C_IS_EXPORT(cs)) {
        /* ECDH key length in export ciphers must be <= 163 bits */
        pkey = X509_get_pubkey(x);
        if (pkey == NULL)
            return 0;
        keysize = EVP_PKEY_bits(pkey);
        EVP_PKEY_free(pkey);
        if (keysize > 163)
            return 0;
    }

2101 2102
    OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);

2103 2104
    if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
        /* key usage, if present, must allow key agreement */
2105
        if (!(ex_kusage & X509v3_KU_KEY_AGREEMENT)) {
2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129
            SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                   SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
            return 0;
        }
        if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
            /* signature alg must be ECDSA */
            if (pk_nid != NID_X9_62_id_ecPublicKey) {
                SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                       SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
                return 0;
            }
        }
        if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
            /* signature alg must be RSA */

            if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
                SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                       SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
                return 0;
            }
        }
    }
    if (alg_a & SSL_aECDSA) {
        /* key usage, if present, must allow signing */
2130
        if (!(ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) {
2131 2132 2133 2134 2135 2136 2137 2138
            SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
                   SSL_R_ECC_CERT_NOT_FOR_SIGNING);
            return 0;
        }
    }

    return 1;                   /* all checks are ok */
}
B
Bodo Möller 已提交
2139

2140 2141
#endif

2142
static int ssl_get_server_cert_index(const SSL *s)
2143 2144 2145 2146 2147 2148 2149 2150 2151
{
    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)
        SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    return idx;
}
B
Ben Laurie 已提交
2152

2153
CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2154 2155 2156
{
    CERT *c;
    int i;
B
Bodo Möller 已提交
2157

2158 2159 2160
    c = s->cert;
    if (!s->s3 || !s->s3->tmp.new_cipher)
        return NULL;
2161
    ssl_set_masks(s, s->s3->tmp.new_cipher);
B
Ben Laurie 已提交
2162

2163
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2164 2165 2166 2167 2168 2169
    /*
     * Broken protocol test: return last used certificate: which may mismatch
     * the one expected.
     */
    if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
        return c->key;
2170 2171
#endif

2172
    i = ssl_get_server_cert_index(s);
B
Ben Laurie 已提交
2173

2174 2175 2176
    /* This may or may not be an error. */
    if (i < 0)
        return NULL;
B
Ben Laurie 已提交
2177

2178 2179 2180
    /* May be NULL. */
    return &c->pkeys[i];
}
2181

2182 2183 2184 2185 2186 2187
EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
                            const EVP_MD **pmd)
{
    unsigned long alg_a;
    CERT *c;
    int idx = -1;
2188

2189 2190
    alg_a = cipher->algorithm_auth;
    c = s->cert;
2191

2192
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217
    /*
     * Broken protocol test: use last key: which may mismatch the one
     * expected.
     */
    if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
        idx = c->key - c->pkeys;
    else
#endif

    if ((alg_a & SSL_aDSS) &&
            (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
        idx = SSL_PKEY_DSA_SIGN;
    else 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) {
        SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
        return (NULL);
    }
    if (pmd)
2218
        *pmd = s->s3->tmp.md[idx];
2219 2220
    return c->pkeys[idx].privatekey;
}
2221

2222
int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
                                   size_t *serverinfo_length)
{
    CERT *c = NULL;
    int i = 0;
    *serverinfo_length = 0;

    c = s->cert;
    i = ssl_get_server_cert_index(s);

    if (i == -1)
        return 0;
    if (c->pkeys[i].serverinfo == NULL)
        return 0;

    *serverinfo = c->pkeys[i].serverinfo;
    *serverinfo_length = c->pkeys[i].serverinfo_length;
    return 1;
}

void ssl_update_cache(SSL *s, int mode)
{
    int i;

    /*
     * If the session_id_length is 0, we are not supposed to cache it, and it
     * would be rather hard to do anyway :-)
     */
    if (s->session->session_id_length == 0)
        return;

    i = s->session_ctx->session_cache_mode;
    if ((i & mode) && (!s->hit)
        && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
            || SSL_CTX_add_session(s->session_ctx, s->session))
        && (s->session_ctx->new_session_cb != NULL)) {
        CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
        if (!s->session_ctx->new_session_cb(s, s->session))
            SSL_SESSION_free(s->session);
    }

    /* auto flush every 255 connections */
    if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
        if ((((mode & SSL_SESS_CACHE_CLIENT)
              ? s->session_ctx->stats.sess_connect_good
              : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
            SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
        }
    }
}
2272

2273
const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2274 2275 2276
{
    return ctx->method;
}
2277

2278
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2279 2280 2281
{
    return (s->method);
}
2282

2283
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383
{
    int conn = -1;
    int ret = 1;

    if (s->method != meth) {
        if (s->handshake_func != NULL)
            conn = (s->handshake_func == s->method->ssl_connect);

        if (s->method->version == meth->version)
            s->method = meth;
        else {
            s->method->ssl_free(s);
            s->method = meth;
            ret = s->method->ssl_new(s);
        }

        if (conn == 1)
            s->handshake_func = meth->ssl_connect;
        else if (conn == 0)
            s->handshake_func = meth->ssl_accept;
    }
    return (ret);
}

int SSL_get_error(const SSL *s, int i)
{
    int reason;
    unsigned long l;
    BIO *bio;

    if (i > 0)
        return (SSL_ERROR_NONE);

    /*
     * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
     * where we do encode the error
     */
    if ((l = ERR_peek_error()) != 0) {
        if (ERR_GET_LIB(l) == ERR_LIB_SYS)
            return (SSL_ERROR_SYSCALL);
        else
            return (SSL_ERROR_SSL);
    }

    if ((i < 0) && SSL_want_read(s)) {
        bio = SSL_get_rbio(s);
        if (BIO_should_read(bio))
            return (SSL_ERROR_WANT_READ);
        else 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);
        else if (BIO_should_io_special(bio)) {
            reason = BIO_get_retry_reason(bio);
            if (reason == BIO_RR_CONNECT)
                return (SSL_ERROR_WANT_CONNECT);
            else if (reason == BIO_RR_ACCEPT)
                return (SSL_ERROR_WANT_ACCEPT);
            else
                return (SSL_ERROR_SYSCALL); /* unknown */
        }
    }

    if ((i < 0) && SSL_want_write(s)) {
        bio = SSL_get_wbio(s);
        if (BIO_should_write(bio))
            return (SSL_ERROR_WANT_WRITE);
        else if (BIO_should_read(bio))
            /*
             * See above (SSL_want_read(s) with BIO_should_write(bio))
             */
            return (SSL_ERROR_WANT_READ);
        else if (BIO_should_io_special(bio)) {
            reason = BIO_get_retry_reason(bio);
            if (reason == BIO_RR_CONNECT)
                return (SSL_ERROR_WANT_CONNECT);
            else if (reason == BIO_RR_ACCEPT)
                return (SSL_ERROR_WANT_ACCEPT);
            else
                return (SSL_ERROR_SYSCALL);
        }
    }
    if ((i < 0) && SSL_want_x509_lookup(s)) {
        return (SSL_ERROR_WANT_X509_LOOKUP);
    }

    if (i == 0) {
        if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
            (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
            return (SSL_ERROR_ZERO_RETURN);
    }
    return (SSL_ERROR_SYSCALL);
}
2384

2385
int SSL_do_handshake(SSL *s)
2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401
{
    int ret = 1;

    if (s->handshake_func == NULL) {
        SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
        return (-1);
    }

    s->method->ssl_renegotiate_check(s);

    if (SSL_in_init(s) || SSL_in_before(s)) {
        ret = s->handshake_func(s);
    }
    return (ret);
}

2402
void SSL_set_accept_state(SSL *s)
2403 2404 2405
{
    s->server = 1;
    s->shutdown = 0;
M
Matt Caswell 已提交
2406
    ossl_statem_clear(s);
2407
    s->handshake_func = s->method->ssl_accept;
R
Rich Salz 已提交
2408
    clear_ciphers(s);
2409
}
2410

2411
void SSL_set_connect_state(SSL *s)
2412 2413 2414
{
    s->server = 0;
    s->shutdown = 0;
M
Matt Caswell 已提交
2415
    ossl_statem_clear(s);
2416
    s->handshake_func = s->method->ssl_connect;
R
Rich Salz 已提交
2417
    clear_ciphers(s);
2418
}
2419

2420
int ssl_undefined_function(SSL *s)
2421 2422 2423 2424
{
    SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2425

2426
int ssl_undefined_void_function(void)
2427 2428 2429 2430 2431
{
    SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2432

B
Ben Laurie 已提交
2433
int ssl_undefined_const_function(const SSL *s)
2434 2435 2436 2437 2438
{
    SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
B
Ben Laurie 已提交
2439

2440
SSL_METHOD *ssl_bad_method(int ver)
2441 2442 2443 2444
{
    SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (NULL);
}
2445

B
Ben Laurie 已提交
2446
const char *SSL_get_version(const SSL *s)
2447 2448 2449 2450 2451 2452 2453 2454 2455
{
    if (s->version == TLS1_2_VERSION)
        return ("TLSv1.2");
    else if (s->version == TLS1_1_VERSION)
        return ("TLSv1.1");
    else if (s->version == TLS1_VERSION)
        return ("TLSv1");
    else if (s->version == SSL3_VERSION)
        return ("SSLv3");
D
David Woodhouse 已提交
2456 2457 2458 2459 2460 2461
    else if (s->version == DTLS1_BAD_VER)
        return ("DTLSv0.9");
    else if (s->version == DTLS1_VERSION)
        return ("DTLSv1");
    else if (s->version == DTLS1_2_VERSION)
        return ("DTLSv1.2");
2462 2463 2464
    else
        return ("unknown");
}
2465

2466
SSL *SSL_dup(SSL *s)
2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480
{
    STACK_OF(X509_NAME) *sk;
    X509_NAME *xn;
    SSL *ret;
    int i;

    if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
        return (NULL);

    ret->version = s->version;
    ret->method = s->method;

    if (s->session != NULL) {
        /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
V
Viktor Dukhovni 已提交
2481
        if (!SSL_copy_session_id(ret, s))
M
Matt Caswell 已提交
2482
            goto err;
2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495
    } else {
        /*
         * No session has been established yet, so we have to expect that
         * s->cert or ret->cert will be changed later -- they should not both
         * point to the same object, and thus we can't use
         * SSL_copy_session_id.
         */

        ret->method->ssl_free(ret);
        ret->method = s->method;
        ret->method->ssl_new(ret);

        if (s->cert != NULL) {
R
Rich Salz 已提交
2496
            ssl_cert_free(ret->cert);
2497 2498 2499 2500 2501
            ret->cert = ssl_cert_dup(s->cert);
            if (ret->cert == NULL)
                goto err;
        }

V
Viktor Dukhovni 已提交
2502
        if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
M
Matt Caswell 已提交
2503
            goto err;
2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542
    }

    ret->options = s->options;
    ret->mode = s->mode;
    SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
    SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
    ret->msg_callback = s->msg_callback;
    ret->msg_callback_arg = s->msg_callback_arg;
    SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
    SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
    ret->generate_session_id = s->generate_session_id;

    SSL_set_info_callback(ret, SSL_get_info_callback(s));

    ret->debug = s->debug;

    /* copy app data, a little dangerous perhaps */
    if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
        goto err;

    /* setup rbio, and wbio */
    if (s->rbio != NULL) {
        if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
            goto err;
    }
    if (s->wbio != NULL) {
        if (s->wbio != s->rbio) {
            if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
                goto err;
        } else
            ret->wbio = ret->rbio;
    }
    ret->rwstate = s->rwstate;
    ret->handshake_func = s->handshake_func;
    ret->server = s->server;
    ret->renegotiate = s->renegotiate;
    ret->new_session = s->new_session;
    ret->quiet_shutdown = s->quiet_shutdown;
    ret->shutdown = s->shutdown;
M
Matt Caswell 已提交
2543 2544
    ret->statem = s->statem;      /* SSL_dup does not really work at any state,
                                   * though */
2545
    RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2546 2547 2548 2549 2550
    ret->init_num = 0;          /* would have to copy ret->init_buf,
                                 * ret->init_msg, ret->init_num,
                                 * ret->init_off */
    ret->hit = s->hit;

M
Matt Caswell 已提交
2551 2552 2553
    ret->default_passwd_callback = s->default_passwd_callback;
    ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;

2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578
    X509_VERIFY_PARAM_inherit(ret->param, s->param);

    /* dup the cipher_list and cipher_list_by_id stacks */
    if (s->cipher_list != NULL) {
        if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
            goto err;
    }
    if (s->cipher_list_by_id != NULL)
        if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
            == NULL)
            goto err;

    /* Dup the client_CA list */
    if (s->client_CA != NULL) {
        if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
            goto err;
        ret->client_CA = sk;
        for (i = 0; i < sk_X509_NAME_num(sk); i++) {
            xn = sk_X509_NAME_value(sk, i);
            if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
                X509_NAME_free(xn);
                goto err;
            }
        }
    }
R
Rich Salz 已提交
2579
    return ret;
2580 2581

 err:
R
Rich Salz 已提交
2582 2583
    SSL_free(ret);
    return NULL;
2584
}
2585

2586
void ssl_clear_cipher_ctx(SSL *s)
2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597
{
    if (s->enc_read_ctx != NULL) {
        EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
        OPENSSL_free(s->enc_read_ctx);
        s->enc_read_ctx = NULL;
    }
    if (s->enc_write_ctx != NULL) {
        EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
        OPENSSL_free(s->enc_write_ctx);
        s->enc_write_ctx = NULL;
    }
2598
#ifndef OPENSSL_NO_COMP
R
Rich Salz 已提交
2599 2600 2601 2602
    COMP_CTX_free(s->expand);
    s->expand = NULL;
    COMP_CTX_free(s->compress);
    s->compress = NULL;
2603 2604
#endif
}
2605

B
Ben Laurie 已提交
2606
X509 *SSL_get_certificate(const SSL *s)
2607 2608 2609 2610 2611 2612
{
    if (s->cert != NULL)
        return (s->cert->key->x509);
    else
        return (NULL);
}
2613

2614
EVP_PKEY *SSL_get_privatekey(const SSL *s)
2615 2616 2617 2618 2619 2620
{
    if (s->cert != NULL)
        return (s->cert->key->privatekey);
    else
        return (NULL);
}
2621

2622
X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2623 2624 2625 2626 2627 2628
{
    if (ctx->cert != NULL)
        return ctx->cert->key->x509;
    else
        return NULL;
}
2629 2630

EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2631 2632 2633 2634 2635 2636
{
    if (ctx->cert != NULL)
        return ctx->cert->key->privatekey;
    else
        return NULL;
}
2637

2638
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2639 2640 2641 2642 2643 2644
{
    if ((s->session != NULL) && (s->session->cipher != NULL))
        return (s->session->cipher);
    return (NULL);
}

2645
const COMP_METHOD *SSL_get_current_compression(SSL *s)
2646
{
R
Rich Salz 已提交
2647 2648 2649 2650 2651
#ifndef OPENSSL_NO_COMP
    return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
#else
    return NULL;
#endif
2652
}
2653 2654

const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2655
{
R
Rich Salz 已提交
2656 2657 2658 2659
#ifndef OPENSSL_NO_COMP
    return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
#else
    return NULL;
2660
#endif
R
Rich Salz 已提交
2661
}
2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691

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);
    }
    (void)BIO_reset(bbio);
/*      if (!BIO_set_write_buffer_size(bbio,16*1024)) */
    if (!BIO_set_read_buffer_size(bbio, 1)) {
        SSLerr(SSL_F_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);
}
2692

2693
void ssl_free_wbio_buffer(SSL *s)
2694
{
R
Rich Salz 已提交
2695
    /* callers ensure s is never null */
2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714
    if (s->bbio == NULL)
        return;

    if (s->bbio == s->wbio) {
        /* remove buffering */
        s->wbio = BIO_pop(s->wbio);
#ifdef REF_CHECK                /* not the usual REF_CHECK, but this avoids
                                 * adding one more preprocessor symbol */
        assert(s->wbio != NULL);
#endif
    }
    BIO_free(s->bbio);
    s->bbio = NULL;
}

void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
{
    ctx->quiet_shutdown = mode;
}
2715

B
Ben Laurie 已提交
2716
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2717 2718 2719
{
    return (ctx->quiet_shutdown);
}
2720

2721 2722 2723 2724
void SSL_set_quiet_shutdown(SSL *s, int mode)
{
    s->quiet_shutdown = mode;
}
2725

B
Ben Laurie 已提交
2726
int SSL_get_quiet_shutdown(const SSL *s)
2727 2728 2729
{
    return (s->quiet_shutdown);
}
2730

2731 2732 2733 2734
void SSL_set_shutdown(SSL *s, int mode)
{
    s->shutdown = mode;
}
2735

B
Ben Laurie 已提交
2736
int SSL_get_shutdown(const SSL *s)
2737 2738 2739
{
    return (s->shutdown);
}
2740

B
Ben Laurie 已提交
2741
int SSL_version(const SSL *s)
2742 2743 2744
{
    return (s->version);
}
2745

B
Ben Laurie 已提交
2746
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2747 2748 2749 2750 2751 2752
{
    return (ssl->ctx);
}

SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
{
K
Kurt Roeckx 已提交
2753
    CERT *new_cert;
2754 2755 2756 2757
    if (ssl->ctx == ctx)
        return ssl->ctx;
    if (ctx == NULL)
        ctx = ssl->initial_ctx;
K
Kurt Roeckx 已提交
2758 2759 2760
    new_cert = ssl_cert_dup(ctx->cert);
    if (new_cert == NULL) {
        return NULL;
2761
    }
K
Kurt Roeckx 已提交
2762 2763
    ssl_cert_free(ssl->cert);
    ssl->cert = new_cert;
2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784

    /*
     * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
     * so setter APIs must prevent invalid lengths from entering the system.
     */
    OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));

    /*
     * If the session ID context matches that of the parent SSL_CTX,
     * inherit it from the new SSL_CTX as well. If however the context does
     * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
     * leave it unchanged.
     */
    if ((ssl->ctx != NULL) &&
        (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
        (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
        ssl->sid_ctx_length = ctx->sid_ctx_length;
        memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
    }

    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
R
Rich Salz 已提交
2785
    SSL_CTX_free(ssl->ctx); /* decrement reference count */
2786 2787 2788 2789
    ssl->ctx = ctx;

    return (ssl->ctx);
}
2790

2791
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2792 2793 2794
{
    return (X509_STORE_set_default_paths(ctx->cert_store));
}
2795

2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826
int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
{
    X509_LOOKUP *lookup;

    lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
    if (lookup == NULL)
        return 0;
    X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);

    /* Clear any errors if the default directory does not exist */
    ERR_clear_error();

    return 1;
}

int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
{
    X509_LOOKUP *lookup;

    lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
    if (lookup == NULL)
        return 0;

    X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);

    /* Clear any errors if the default file does not exist */
    ERR_clear_error();

    return 1;
}

2827
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2828 2829 2830 2831
                                  const char *CApath)
{
    return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
}
2832

B
Ben Laurie 已提交
2833
void SSL_set_info_callback(SSL *ssl,
2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847
                           void (*cb) (const SSL *ssl, int type, int val))
{
    ssl->info_callback = cb;
}

/*
 * One compiler (Diab DCC) doesn't like argument names in returned function
 * pointer.
 */
void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
                                               int /* type */ ,
                                               int /* val */ ) {
    return ssl->info_callback;
}
2848

2849 2850 2851 2852
void SSL_set_verify_result(SSL *ssl, long arg)
{
    ssl->verify_result = arg;
}
2853

B
Ben Laurie 已提交
2854
long SSL_get_verify_result(const SSL *ssl)
2855 2856 2857 2858
{
    return (ssl->verify_result);
}

2859
size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
2860
{
2861
    if (outlen == 0)
2862 2863 2864 2865
        return sizeof(ssl->s3->client_random);
    if (outlen > sizeof(ssl->s3->client_random))
        outlen = sizeof(ssl->s3->client_random);
    memcpy(out, ssl->s3->client_random, outlen);
2866
    return outlen;
2867 2868
}

2869
size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
2870
{
2871
    if (outlen == 0)
2872 2873 2874 2875
        return sizeof(ssl->s3->server_random);
    if (outlen > sizeof(ssl->s3->server_random))
        outlen = sizeof(ssl->s3->server_random);
    memcpy(out, ssl->s3->server_random, outlen);
2876
    return outlen;
2877 2878
}

2879
size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
2880
                               unsigned char *out, size_t outlen)
2881
{
2882 2883 2884 2885
    if (session->master_key_length < 0) {
        /* Should never happen */
        return 0;
    }
2886 2887
    if (outlen == 0)
        return session->master_key_length;
2888
    if (outlen > (size_t)session->master_key_length)
2889 2890
        outlen = session->master_key_length;
    memcpy(out, session->master_key, outlen);
2891
    return outlen;
2892 2893
}

2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927
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)
{
    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
                                   new_func, dup_func, free_func);
}

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)
{
    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
                                   new_func, dup_func, free_func);
}

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));
}
2928

2929
int ssl_ok(SSL *s)
2930 2931 2932
{
    return (1);
}
2933

B
Ben Laurie 已提交
2934
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2935 2936 2937
{
    return (ctx->cert_store);
}
2938

2939 2940
void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
{
R
Rich Salz 已提交
2941
    X509_STORE_free(ctx->cert_store);
2942 2943
    ctx->cert_store = store;
}
2944

B
Ben Laurie 已提交
2945
int SSL_want(const SSL *s)
2946 2947 2948
{
    return (s->rwstate);
}
2949

2950
/**
2951 2952 2953 2954 2955
 * \brief Set the callback for generating temporary RSA keys.
 * \param ctx the SSL context.
 * \param cb the callback
 */

2956
#ifndef OPENSSL_NO_RSA
2957 2958 2959 2960 2961 2962
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);
}
2963

2964 2965 2966 2967 2968 2969
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);
}
2970
#endif
2971

2972
#ifdef DOXYGEN
2973
/**
2974 2975
 * \brief The RSA temporary key callback function.
 * \param ssl the SSL session.
U
Ulf Möller 已提交
2976 2977 2978
 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
 * of the required key in bits.
2979 2980 2981 2982
 * \return the temporary RSA key.
 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
 */

2983 2984 2985
RSA *cb(SSL *ssl, int is_export, int keylength)
{
}
2986 2987
#endif

2988
/**
2989 2990 2991 2992 2993
 * \brief Set the callback for generating temporary DH keys.
 * \param ctx the SSL context.
 * \param dh the callback
 */

2994
#ifndef OPENSSL_NO_DH
2995 2996 2997 2998 2999 3000
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);
}
3001

3002 3003 3004 3005 3006
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);
}
3007
#endif
3008

3009
#ifndef OPENSSL_NO_EC
3010 3011 3012 3013 3014 3015 3016
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
                                   EC_KEY *(*ecdh) (SSL *ssl, int is_export,
                                                    int keylength))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
                          (void (*)(void))ecdh);
}
B
Bodo Möller 已提交
3017

3018 3019 3020 3021 3022 3023
void SSL_set_tmp_ecdh_callback(SSL *ssl,
                               EC_KEY *(*ecdh) (SSL *ssl, int is_export,
                                                int keylength))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
}
B
Bodo Möller 已提交
3024 3025
#endif

3026 3027
#ifndef OPENSSL_NO_PSK
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3028 3029 3030 3031 3032 3033
{
    if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
        SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
               SSL_R_DATA_LENGTH_TOO_LONG);
        return 0;
    }
3034
    OPENSSL_free(ctx->cert->psk_identity_hint);
3035
    if (identity_hint != NULL) {
3036 3037
        ctx->cert->psk_identity_hint = BUF_strdup(identity_hint);
        if (ctx->cert->psk_identity_hint == NULL)
3038 3039
            return 0;
    } else
3040
        ctx->cert->psk_identity_hint = NULL;
3041 3042
    return 1;
}
3043 3044

int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3045 3046 3047 3048 3049 3050 3051 3052
{
    if (s == NULL)
        return 0;

    if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
        SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
        return 0;
    }
3053
    OPENSSL_free(s->cert->psk_identity_hint);
3054
    if (identity_hint != NULL) {
3055 3056
        s->cert->psk_identity_hint = BUF_strdup(identity_hint);
        if (s->cert->psk_identity_hint == NULL)
3057 3058
            return 0;
    } else
3059
        s->cert->psk_identity_hint = NULL;
3060 3061
    return 1;
}
3062 3063

const char *SSL_get_psk_identity_hint(const SSL *s)
3064 3065 3066 3067 3068
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity_hint);
}
3069 3070

const char *SSL_get_psk_identity(const SSL *s)
3071 3072 3073 3074 3075
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity);
}
N
Nils Larsch 已提交
3076

3077
void SSL_set_psk_client_callback(SSL *s,
3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088
                                 unsigned int (*cb) (SSL *ssl,
                                                     const char *hint,
                                                     char *identity,
                                                     unsigned int
                                                     max_identity_len,
                                                     unsigned char *psk,
                                                     unsigned int
                                                     max_psk_len))
{
    s->psk_client_callback = cb;
}
N
Nils Larsch 已提交
3089 3090

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101
                                     unsigned int (*cb) (SSL *ssl,
                                                         const char *hint,
                                                         char *identity,
                                                         unsigned int
                                                         max_identity_len,
                                                         unsigned char *psk,
                                                         unsigned int
                                                         max_psk_len))
{
    ctx->psk_client_callback = cb;
}
N
Nils Larsch 已提交
3102

3103
void SSL_set_psk_server_callback(SSL *s,
3104 3105 3106 3107 3108 3109 3110 3111
                                 unsigned int (*cb) (SSL *ssl,
                                                     const char *identity,
                                                     unsigned char *psk,
                                                     unsigned int
                                                     max_psk_len))
{
    s->psk_server_callback = cb;
}
N
Nils Larsch 已提交
3112 3113

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138
                                     unsigned int (*cb) (SSL *ssl,
                                                         const char *identity,
                                                         unsigned char *psk,
                                                         unsigned int
                                                         max_psk_len))
{
    ctx->psk_server_callback = cb;
}
#endif

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);
}
3139

3140
void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3141 3142 3143 3144 3145 3146 3147 3148
                                                int (*cb) (SSL *ssl,
                                                           int
                                                           is_forward_secure))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                          (void (*)(void))cb);
}

3149
void SSL_set_not_resumable_session_callback(SSL *ssl,
3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161
                                            int (*cb) (SSL *ssl,
                                                       int is_forward_secure))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                      (void (*)(void))cb);
}

/*
 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
 * allocated ctx;
B
Ben Laurie 已提交
3162
 */
3163

3164
EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3165
{
3166 3167 3168 3169 3170
    ssl_clear_hash_ctx(hash);
    *hash = EVP_MD_CTX_create();
    if (md)
        EVP_DigestInit_ex(*hash, md, NULL);
    return *hash;
3171
}
3172 3173

void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3174 3175
{

3176 3177 3178
    if (*hash)
        EVP_MD_CTX_destroy(*hash);
    *hash = NULL;
3179
}
3180

3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209
/* Retrieve handshake hashes */
int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
{
    unsigned char *p = out;
    int idx, ret = 0;
    long mask;
    EVP_MD_CTX ctx;
    const EVP_MD *md;
    EVP_MD_CTX_init(&ctx);
    for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
        if (mask & ssl_get_algorithm2(s)) {
            int hashsize = EVP_MD_size(md);
            EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
            if (!hdgst || hashsize < 0 || hashsize > outlen)
                goto err;
            if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
                goto err;
            if (!EVP_DigestFinal_ex(&ctx, p, NULL))
                goto err;
            p += hashsize;
            outlen -= hashsize;
        }
    }
    ret = p - out;
 err:
    EVP_MD_CTX_cleanup(&ctx);
    return ret;
}

3210
void SSL_set_debug(SSL *s, int debug)
3211 3212 3213
{
    s->debug = debug;
}
3214 3215

int SSL_cache_hit(SSL *s)
3216 3217 3218
{
    return s->hit;
}
3219

3220
int SSL_is_server(SSL *s)
3221 3222 3223
{
    return s->server;
}
3224

D
Dr. Stephen Henson 已提交
3225
void SSL_set_security_level(SSL *s, int level)
3226 3227 3228
{
    s->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3229 3230

int SSL_get_security_level(const SSL *s)
3231 3232 3233
{
    return s->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3234

3235 3236 3237 3238 3239 3240 3241
void SSL_set_security_callback(SSL *s,
                               int (*cb) (SSL *s, SSL_CTX *ctx, int op,
                                          int bits, int nid, void *other,
                                          void *ex))
{
    s->cert->sec_cb = cb;
}
D
Dr. Stephen Henson 已提交
3242

3243 3244 3245 3246 3247
int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
                                                int bits, int nid,
                                                void *other, void *ex) {
    return s->cert->sec_cb;
}
D
Dr. Stephen Henson 已提交
3248 3249

void SSL_set0_security_ex_data(SSL *s, void *ex)
3250 3251 3252
{
    s->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3253 3254

void *SSL_get0_security_ex_data(const SSL *s)
3255 3256 3257
{
    return s->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3258 3259

void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3260 3261 3262
{
    ctx->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3263 3264

int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3265 3266 3267
{
    return ctx->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3268

3269 3270 3271 3272 3273 3274 3275
void SSL_CTX_set_security_callback(SSL_CTX *ctx,
                                   int (*cb) (SSL *s, SSL_CTX *ctx, int op,
                                              int bits, int nid, void *other,
                                              void *ex))
{
    ctx->cert->sec_cb = cb;
}
D
Dr. Stephen Henson 已提交
3276

3277 3278 3279 3280 3281 3282 3283 3284
int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
                                                          SSL_CTX *ctx,
                                                          int op, int bits,
                                                          int nid,
                                                          void *other,
                                                          void *ex) {
    return ctx->cert->sec_cb;
}
D
Dr. Stephen Henson 已提交
3285 3286

void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3287 3288 3289
{
    ctx->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3290 3291

void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3292 3293 3294
{
    return ctx->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3295

3296
IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);