ssl_lib.c 93.7 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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#include <openssl/async.h>
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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 */
    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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struct ssl_async_args {
    SSL *s;
    void *buf;
    int num;
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    int type;
    union {
        int (*func1)(SSL *, void *, int);
        int (*func2)(SSL *, const void *, int);
    } f;
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};

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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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    s->job = NULL;

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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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Rich Salz 已提交
581
    sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
R
Rich Salz 已提交
582
    sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
R
Rich Salz 已提交
583 584
    OPENSSL_free(s->tlsext_ocsp_resp);
    OPENSSL_free(s->alpn_client_proto_list);
585

R
Rich Salz 已提交
586
    sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
587 588 589 590

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

591
    RECORD_LAYER_release(&s->rlayer);
M
Matt Caswell 已提交
592

R
Rich Salz 已提交
593
    SSL_CTX_free(s->ctx);
D
Dr. Stephen Henson 已提交
594

595
#if !defined(OPENSSL_NO_NEXTPROTONEG)
R
Rich Salz 已提交
596
    OPENSSL_free(s->next_proto_negotiated);
B
Ben Laurie 已提交
597 598
#endif

P
Piotr Sikora 已提交
599
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
600
    sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
601 602 603 604 605
#endif

    OPENSSL_free(s);
}

606 607
void SSL_set_rbio(SSL *s, BIO *rbio)
{
R
Rich Salz 已提交
608
    if (s->rbio != rbio)
609 610 611 612 613
        BIO_free_all(s->rbio);
    s->rbio = rbio;
}

void SSL_set_wbio(SSL *s, BIO *wbio)
614 615 616 617 618 619 620 621 622 623
{
    /*
     * 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
624
    if (s->wbio != wbio && s->rbio != s->wbio)
625 626 627
        BIO_free_all(s->wbio);
    s->wbio = wbio;
}
628

629 630 631 632 633 634
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
635
BIO *SSL_get_rbio(const SSL *s)
636 637 638
{
    return (s->rbio);
}
639

B
Ben Laurie 已提交
640
BIO *SSL_get_wbio(const SSL *s)
641 642 643
{
    return (s->wbio);
}
644

B
Ben Laurie 已提交
645
int SSL_get_fd(const SSL *s)
646 647 648
{
    return (SSL_get_rfd(s));
}
649

B
Ben Laurie 已提交
650
int SSL_get_rfd(const SSL *s)
651 652 653 654 655 656 657 658 659 660
{
    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);
}
661

B
Ben Laurie 已提交
662
int SSL_get_wfd(const SSL *s)
663 664 665 666 667 668 669 670 671 672
{
    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);
}
673

674
#ifndef OPENSSL_NO_SOCK
675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691
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);
}
692

693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
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
737 738

/* return length of latest Finished message we sent, copy to 'buf' */
B
Ben Laurie 已提交
739
size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
740 741 742 743 744 745 746 747 748 749 750
{
    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;
}
751 752

/* return length of latest Finished message we expected, copy to 'buf' */
B
Ben Laurie 已提交
753
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
754 755
{
    size_t ret = 0;
756

757 758 759 760 761 762 763 764
    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;
}
765

B
Ben Laurie 已提交
766
int SSL_get_verify_mode(const SSL *s)
767 768 769
{
    return (s->verify_mode);
}
770

B
Ben Laurie 已提交
771
int SSL_get_verify_depth(const SSL *s)
772 773 774
{
    return X509_VERIFY_PARAM_get_depth(s->param);
}
775

776 777 778
int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
    return (s->verify_callback);
}
779

B
Ben Laurie 已提交
780
int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
781 782 783
{
    return (ctx->verify_mode);
}
784

B
Ben Laurie 已提交
785
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
{
    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)
{
809
    RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
810
}
811

B
Ben Laurie 已提交
812
int SSL_get_read_ahead(const SSL *s)
813
{
814
    return RECORD_LAYER_get_read_ahead(&s->rlayer);
815
}
816

B
Ben Laurie 已提交
817
int SSL_pending(const SSL *s)
818 819 820 821 822 823 824 825 826 827
{
    /*
     * 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));
}
828

B
Ben Laurie 已提交
829
X509 *SSL_get_peer_certificate(const SSL *s)
830 831
{
    X509 *r;
832

833 834 835 836
    if ((s == NULL) || (s->session == NULL))
        r = NULL;
    else
        r = s->session->peer;
837

838 839
    if (r == NULL)
        return (r);
840

D
Dr. Stephen Henson 已提交
841
    X509_up_ref(r);
842 843 844

    return (r);
}
845

B
Ben Laurie 已提交
846
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
847 848 849
{
    STACK_OF(X509) *r;

850
    if ((s == NULL) || (s->session == NULL))
851 852
        r = NULL;
    else
853
        r = s->session->peer_chain;
854 855 856 857 858 859 860 861 862 863 864 865 866

    /*
     * 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
867
int SSL_copy_session_id(SSL *t, const SSL *f)
868 869
{
    /* Do we need to to SSL locking? */
V
Viktor Dukhovni 已提交
870
    if (!SSL_set_session(t, SSL_get_session(f))) {
M
Matt Caswell 已提交
871
        return 0;
M
Matt Caswell 已提交
872
    }
873 874

    /*
M
Matt Caswell 已提交
875
     * what if we are setup for one protocol version but want to talk another
876 877 878 879 880 881 882
     */
    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
883 884 885
    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
886
    if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
M
Matt Caswell 已提交
887
        return 0;
M
Matt Caswell 已提交
888
    }
M
Matt Caswell 已提交
889 890

    return 1;
891
}
892

893
/* Fix this so it checks all the valid key/cert options */
B
Ben Laurie 已提交
894
int SSL_CTX_check_private_key(const SSL_CTX *ctx)
895 896
{
    if ((ctx == NULL) ||
K
Kurt Roeckx 已提交
897
        (ctx->cert->key->x509 == NULL)) {
898 899 900 901 902 903 904 905 906 907 908 909
        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));
}
910

911
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
912
int SSL_check_private_key(const SSL *ssl)
913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
{
    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));
}
929

M
Matt Caswell 已提交
930 931
int SSL_waiting_for_async(SSL *s)
{
M
Matt Caswell 已提交
932 933 934
    if(s->job)
        return 1;

M
Matt Caswell 已提交
935 936 937
    return 0;
}

M
Matt Caswell 已提交
938 939 940
int SSL_get_async_wait_fd(SSL *s)
{
    if (!s->job)
941
        return -1;
M
Matt Caswell 已提交
942 943 944 945

    return ASYNC_get_wait_fd(s->job);
}

946
int SSL_accept(SSL *s)
947
{
M
Matt Caswell 已提交
948
    if (s->handshake_func == 0) {
949 950
        /* Not properly initialized yet */
        SSL_set_accept_state(s);
M
Matt Caswell 已提交
951
    }
M
Matt Caswell 已提交
952 953

    return SSL_do_handshake(s);
954
}
955

956
int SSL_connect(SSL *s)
957
{
M
Matt Caswell 已提交
958
    if (s->handshake_func == 0) {
959 960
        /* Not properly initialized yet */
        SSL_set_connect_state(s);
M
Matt Caswell 已提交
961
    }
962

M
Matt Caswell 已提交
963
    return SSL_do_handshake(s);
964
}
965

B
Ben Laurie 已提交
966
long SSL_get_default_timeout(const SSL *s)
967 968 969 970
{
    return (s->method->get_timeout());
}

971
static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
M
Matt Caswell 已提交
972 973 974 975 976 977
                          int (*func)(void *)) {
    int ret;
    switch(ASYNC_start_job(&s->job, &ret, func, args,
        sizeof(struct ssl_async_args))) {
    case ASYNC_ERR:
        s->rwstate = SSL_NOTHING;
978
        SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
M
Matt Caswell 已提交
979 980 981 982 983 984 985 986 987
        return -1;
    case ASYNC_PAUSE:
        s->rwstate = SSL_ASYNC_PAUSED;
        return -1;
    case ASYNC_FINISH:
        s->job = NULL;
        return ret;
    default:
        s->rwstate = SSL_NOTHING;
988
        SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
M
Matt Caswell 已提交
989 990 991 992
        /* Shouldn't happen */
        return -1;
    }
}
M
Matt Caswell 已提交
993

M
Matt Caswell 已提交
994
static int ssl_io_intern(void *vargs)
M
Matt Caswell 已提交
995 996 997 998 999 1000 1001 1002 1003 1004
{
    struct ssl_async_args *args;
    SSL *s;
    void *buf;
    int num;

    args = (struct ssl_async_args *)vargs;
    s = args->s;
    buf = args->buf;
    num = args->num;
M
Matt Caswell 已提交
1005 1006 1007 1008
    if (args->type == 1)
        return args->f.func1(s, buf, num);
    else
        return args->f.func2(s, buf, num);
M
Matt Caswell 已提交
1009 1010
}

1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
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);
    }
M
Matt Caswell 已提交
1022

M
Matt Caswell 已提交
1023
    if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
M
Matt Caswell 已提交
1024 1025 1026 1027 1028 1029 1030 1031
        struct ssl_async_args args;

        args.s = s;
        args.buf = buf;
        args.num = num;
        args.type = 1;
        args.f.func1 = s->method->ssl_read;

1032
        return ssl_start_async_job(s, &args, ssl_io_intern);
M
Matt Caswell 已提交
1033 1034 1035
    } else {
        return s->method->ssl_read(s, buf, num);
    }
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
}

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);
    }
M
Matt Caswell 已提交
1048 1049
    if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
        struct ssl_async_args args;
1050

M
Matt Caswell 已提交
1051 1052 1053 1054 1055
        args.s = s;
        args.buf = buf;
        args.num = num;
        args.type = 1;
        args.f.func1 = s->method->ssl_peek;
M
Matt Caswell 已提交
1056

1057
        return ssl_start_async_job(s, &args, ssl_io_intern);
M
Matt Caswell 已提交
1058 1059 1060
    } else {
        return s->method->ssl_peek(s, buf, num);
    }
M
Matt Caswell 已提交
1061 1062
}

1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074
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);
    }
M
Matt Caswell 已提交
1075

M
Matt Caswell 已提交
1076
    if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
M
Matt Caswell 已提交
1077 1078 1079 1080 1081 1082 1083 1084
        struct ssl_async_args args;

        args.s = s;
        args.buf = (void *)buf;
        args.num = num;
        args.type = 2;
        args.f.func2 = s->method->ssl_write;

1085
        return ssl_start_async_job(s, &args, ssl_io_intern);
M
Matt Caswell 已提交
1086 1087 1088
    } else {
        return s->method->ssl_write(s, buf, num);
    }
1089
}
1090

1091
int SSL_shutdown(SSL *s)
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104
{
    /*
     * 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;
    }

1105
    if (!SSL_in_init(s))
1106 1107 1108 1109
        return (s->method->ssl_shutdown(s));
    else
        return (1);
}
1110

1111
int SSL_renegotiate(SSL *s)
1112 1113 1114
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
D
Dr. Stephen Henson 已提交
1115

1116
    s->new_session = 1;
D
Dr. Stephen Henson 已提交
1117

1118 1119
    return (s->method->ssl_renegotiate(s));
}
1120

D
Dr. Stephen Henson 已提交
1121
int SSL_renegotiate_abbreviated(SSL *s)
1122 1123 1124
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
B
Bodo Möller 已提交
1125

1126
    s->new_session = 0;
B
Bodo Möller 已提交
1127

1128 1129
    return (s->method->ssl_renegotiate(s));
}
D
Dr. Stephen Henson 已提交
1130

1131
int SSL_renegotiate_pending(SSL *s)
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145
{
    /*
     * 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:
1146
        return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1147
    case SSL_CTRL_SET_READ_AHEAD:
1148 1149
        l = RECORD_LAYER_get_read_ahead(&s->rlayer);
        RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
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
        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
1187
            if (s->s3->tmp.ciphers_raw == NULL)
1188
                return 0;
D
Dr. Stephen Henson 已提交
1189 1190
            *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
            return (int)s->s3->tmp.ciphers_rawlen;
E
Emilia Kasper 已提交
1191 1192 1193
        } else {
            return TLS_CIPHER_LEN;
        }
1194
    case SSL_CTRL_GET_EXTMS_SUPPORT:
M
Matt Caswell 已提交
1195
        if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1196 1197
		return -1;
	if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1198 1199 1200
            return 1;
        else
            return 0;
1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
    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));
    }
}
1220

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Ben Laurie 已提交
1221
LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231
{
    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) {
1232
#ifndef OPENSSL_NO_EC
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
        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));
    }
}
1336

1337
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1338
{
1339 1340 1341 1342 1343
    if (a->id > b->id)
        return 1;
    if (a->id < b->id)
        return -1;
    return 0;
1344 1345 1346 1347 1348
}

int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
                          const SSL_CIPHER *const *bp)
{
1349 1350 1351 1352 1353
    if ((*ap)->id > (*bp)->id)
        return 1;
    if ((*ap)->id < (*bp)->id)
        return -1;
    return 0;
1354
}
1355

1356
/** return a STACK of the ciphers available for the SSL and in order of
1357
 * preference */
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Ben Laurie 已提交
1358
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369
{
    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);
}

1370 1371 1372 1373 1374 1375 1376
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;
}

1377
STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
{
    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;
}
1400

1401
/** return a STACK of the ciphers available for the SSL and in order of
1402
 * algorithm id */
B
Ben Laurie 已提交
1403
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1404 1405 1406 1407 1408 1409 1410 1411 1412 1413
{
    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);
}
1414

1415
/** The old interface to get the same thing as SSL_get_ciphers() */
1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430
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);
}
1431

1432
/** specify the ciphers to be used by default by the SSL_CTX */
1433
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453
{
    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;
}
1454

1455
/** specify the ciphers to be used by the SSL */
1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470
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;
}
1471

1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507
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);
}

1508
/** return a servername extension value if provided in Client Hello, or NULL.
1509
 * So far, only host_name types are defined (RFC 3546).
1510 1511
 */

1512
const char *SSL_get_servername(const SSL *s, const int type)
1513 1514 1515
{
    if (type != TLSEXT_NAMETYPE_host_name)
        return NULL;
B
Bodo Möller 已提交
1516

1517 1518 1519
    return s->session && !s->tlsext_hostname ?
        s->session->tlsext_hostname : s->tlsext_hostname;
}
1520

1521
int SSL_get_servername_type(const SSL *s)
1522 1523 1524 1525 1526 1527 1528
{
    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
1529

1530 1531
/*
 * SSL_select_next_proto implements the standard protocol selection. It is
B
Ben Laurie 已提交
1532
 * expected that this function is called from the callback set by
1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548
 * 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
1549
 */
1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587
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
1588

1589
#ifndef OPENSSL_NO_NEXTPROTONEG
1590 1591 1592 1593 1594 1595
/*
 * 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
1596 1597
 * provided by the callback.
 */
1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631
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
1632 1633
 * 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|).
1634 1635 1636 1637 1638
 * 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
1639
 */
1640 1641 1642 1643 1644 1645 1646 1647 1648 1649
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;
}
1650
#endif
1651

1652 1653
/*
 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
A
Adam Langley 已提交
1654
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1655 1656 1657 1658 1659
 * 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
1660
    OPENSSL_free(ctx->alpn_client_proto_list);
1661
    ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1662
    if (ctx->alpn_client_proto_list == NULL)
1663 1664 1665 1666 1667 1668 1669 1670 1671
        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
1672
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1673 1674 1675 1676 1677
 * 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
1678
    OPENSSL_free(ssl->alpn_client_proto_list);
1679
    ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1680
    if (ssl->alpn_client_proto_list == NULL)
1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710
        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
1711
void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722
                            unsigned *len)
{
    *data = NULL;
    if (ssl->s3)
        *data = ssl->s3->alpn_selected;
    if (*data == NULL)
        *len = 0;
    else
        *len = ssl->s3->alpn_selected_len;
}

1723

1724
int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1725 1726 1727 1728 1729 1730
                               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
1731

1732 1733 1734 1735
    return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
                                                       llen, p, plen,
                                                       use_context);
}
B
Ben Laurie 已提交
1736

B
Ben Laurie 已提交
1737
static unsigned long ssl_session_hash(const SSL_SESSION *a)
1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750
{
    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
1751
 * coarser function than this one) is changed, ensure
1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766
 * 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
1767
 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1768 1769 1770
 * variable. The reason is that the functions aren't static, they're exposed
 * via ssl.h.
 */
B
Ben Laurie 已提交
1771 1772
static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1773

1774
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
{
    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
1792
    ret = OPENSSL_zalloc(sizeof(*ret));
1793 1794 1795 1796 1797 1798
    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
1799
    /* We take the system default. */
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813
    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
1814
    if (!ssl_create_cipher_list(ret->method,
1815
                           &ret->cipher_list, &ret->cipher_list_by_id,
M
Matt Caswell 已提交
1816 1817
                           SSL_DEFAULT_CIPHER_LIST, ret->cert)
       || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1818 1819 1820 1821 1822
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
        goto err2;
    }

    ret->param = X509_VERIFY_PARAM_new();
1823
    if (ret->param == NULL)
1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
        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;
1845

1846
    /* Setup RFC4507 ticket keys */
M
Matt Caswell 已提交
1847
    if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1848 1849 1850
        || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
        || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
        ret->options |= SSL_OP_NO_TICKET;
1851

B
Ben Laurie 已提交
1852
#ifndef OPENSSL_NO_SRP
V
Viktor Dukhovni 已提交
1853
    if (!SSL_CTX_SRP_CTX_init(ret))
M
Matt Caswell 已提交
1854
        goto err;
B
Ben Laurie 已提交
1855
#endif
1856
#ifndef OPENSSL_NO_ENGINE
1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883
# 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
1884
    SSL_CTX_free(ret);
1885 1886
    return (NULL);
}
1887

1888
void SSL_CTX_free(SSL_CTX *a)
1889 1890
{
    int i;
1891

1892 1893
    if (a == NULL)
        return;
1894

1895
    i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1896
#ifdef REF_PRINT
1897
    REF_PRINT("SSL_CTX", a);
1898
#endif
1899 1900
    if (i > 0)
        return;
1901
#ifdef REF_CHECK
1902 1903 1904 1905 1906 1907
    if (i < 0) {
        fprintf(stderr, "SSL_CTX_free, bad reference count\n");
        abort();                /* ok */
    }
#endif

R
Rich Salz 已提交
1908
    X509_VERIFY_PARAM_free(a->param);
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922

    /*
     * 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
1923
    lh_SSL_SESSION_free(a->sessions);
R
Rich Salz 已提交
1924
    X509_STORE_free(a->cert_store);
R
Rich Salz 已提交
1925 1926
    sk_SSL_CIPHER_free(a->cipher_list);
    sk_SSL_CIPHER_free(a->cipher_list_by_id);
R
Rich Salz 已提交
1927
    ssl_cert_free(a->cert);
R
Rich Salz 已提交
1928 1929
    sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
    sk_X509_pop_free(a->extra_certs, X509_free);
1930
    a->comp_methods = NULL;
P
Piotr Sikora 已提交
1931
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
1932
    sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
P
Piotr Sikora 已提交
1933
#endif
B
Ben Laurie 已提交
1934
#ifndef OPENSSL_NO_SRP
1935
    SSL_CTX_SRP_CTX_free(a);
B
Ben Laurie 已提交
1936
#endif
1937
#ifndef OPENSSL_NO_ENGINE
1938 1939
    if (a->client_cert_engine)
        ENGINE_finish(a->client_cert_engine);
1940
#endif
B
Ben Laurie 已提交
1941

1942
#ifndef OPENSSL_NO_EC
R
Rich Salz 已提交
1943 1944
    OPENSSL_free(a->tlsext_ecpointformatlist);
    OPENSSL_free(a->tlsext_ellipticcurvelist);
B
Ben Laurie 已提交
1945
#endif
1946
    OPENSSL_free(a->alpn_client_proto_list);
B
Ben Laurie 已提交
1947

1948 1949
    OPENSSL_free(a);
}
1950

1951
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1952 1953 1954 1955 1956 1957 1958 1959 1960
{
    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
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
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;
}

1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
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);
}
2001

2002
void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
2003 2004
{
    CERT_PKEY *cpk;
2005
    CERT *c = s->cert;
2006
    uint32_t *pvalid = s->s3->tmp.valid_flags;
2007 2008
    int rsa_enc, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
    unsigned long mask_k, mask_a;
2009
#ifndef OPENSSL_NO_EC
2010
    int have_ecc_cert, ecdsa_ok;
2011
    int ecdh_ok;
2012
    X509 *x = NULL;
2013
    int pk_nid = 0, md_nid = 0;
2014
#endif
2015 2016
    if (c == NULL)
        return;
2017

2018
#ifndef OPENSSL_NO_DH
2019
    dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2020
#else
2021
    dh_tmp = 0;
2022 2023
#endif

2024
    cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2025
    rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2026
    cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2027
    rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2028
    cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2029
    dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2030
    cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2031
    dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
2032
    cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2033
    dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
2034
    cpk = &(c->pkeys[SSL_PKEY_ECC]);
2035
#ifndef OPENSSL_NO_EC
2036
    have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2037
#endif
2038 2039
    mask_k = 0;
    mask_a = 0;
2040

2041
#ifdef CIPHER_DEBUG
2042
    fprintf(stderr,
2043 2044
            "dht=%d re=%d rs=%d ds=%d dhr=%d dhd=%d\n",
            dh_tmp, rsa_enc, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2045 2046
#endif

M
Matt Caswell 已提交
2047
#ifndef OPENSSL_NO_GOST
2048 2049 2050 2051 2052 2053 2054 2055 2056 2057
    cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST12;
    }
    cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST12;
    }
2058 2059 2060 2061 2062
    cpk = &(c->pkeys[SSL_PKEY_GOST01]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST01;
    }
M
Matt Caswell 已提交
2063
#endif
2064

2065
    if (rsa_enc)
2066
        mask_k |= SSL_kRSA;
2067

2068 2069
    if (dh_tmp)
        mask_k |= SSL_kDHE;
2070

2071 2072
    if (dh_rsa)
        mask_k |= SSL_kDHr;
2073

2074 2075
    if (dh_dsa)
        mask_k |= SSL_kDHd;
2076

2077
    if (mask_k & (SSL_kDHr | SSL_kDHd))
2078
        mask_a |= SSL_aDH;
2079

2080 2081 2082
    if (rsa_enc || rsa_sign) {
        mask_a |= SSL_aRSA;
    }
2083

2084 2085 2086
    if (dsa_sign) {
        mask_a |= SSL_aDSS;
    }
2087

2088
    mask_a |= SSL_aNULL;
2089

2090 2091 2092 2093
    /*
     * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
     * depending on the key usage extension.
     */
2094
#ifndef OPENSSL_NO_EC
2095
    if (have_ecc_cert) {
2096
        uint32_t ex_kusage;
2097 2098
        cpk = &c->pkeys[SSL_PKEY_ECC];
        x = cpk->x509;
2099 2100 2101
        ex_kusage = X509_get_key_usage(x);
        ecdh_ok = ex_kusage & X509v3_KU_KEY_AGREEMENT;
        ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2102
        if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2103
            ecdsa_ok = 0;
2104
        OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120
        if (ecdh_ok) {

            if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
                mask_k |= SSL_kECDHr;
                mask_a |= SSL_aECDH;
            }

            if (pk_nid == NID_X9_62_id_ecPublicKey) {
                mask_k |= SSL_kECDHe;
                mask_a |= SSL_aECDH;
            }
        }
        if (ecdsa_ok) {
            mask_a |= SSL_aECDSA;
        }
    }
2121
#endif
B
Bodo Möller 已提交
2122

2123
#ifndef OPENSSL_NO_EC
2124
    mask_k |= SSL_kECDHE;
B
Bodo Möller 已提交
2125
#endif
2126 2127

#ifndef OPENSSL_NO_PSK
2128 2129
    mask_k |= SSL_kPSK;
    mask_a |= SSL_aPSK;
2130 2131 2132 2133 2134 2135
    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;
2136 2137
#endif

2138 2139
    s->s3->tmp.mask_k = mask_k;
    s->s3->tmp.mask_a = mask_a;
2140
}
2141

2142 2143
#ifndef OPENSSL_NO_EC

2144
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2145 2146
{
    unsigned long alg_k, alg_a;
2147
    int md_nid = 0, pk_nid = 0;
2148
    const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2149
    uint32_t ex_kusage = X509_get_key_usage(x);
2150 2151 2152 2153

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

2154 2155
    OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);

2156 2157
    if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
        /* key usage, if present, must allow key agreement */
2158
        if (!(ex_kusage & X509v3_KU_KEY_AGREEMENT)) {
2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182
            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 */
2183
        if (!(ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) {
2184 2185 2186 2187 2188 2189 2190 2191
            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
2192

2193 2194
#endif

2195
static int ssl_get_server_cert_index(const SSL *s)
2196 2197 2198 2199 2200
{
    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;
2201 2202 2203 2204 2205 2206 2207 2208 2209 2210
    if (idx == SSL_PKEY_GOST_EC) {
        if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
            idx = SSL_PKEY_GOST12_512;
        else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
            idx = SSL_PKEY_GOST12_256;
        else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
            idx = SSL_PKEY_GOST01;
        else
            idx = -1;
    }
2211 2212 2213 2214
    if (idx == -1)
        SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    return idx;
}
B
Ben Laurie 已提交
2215

2216
CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2217 2218 2219
{
    CERT *c;
    int i;
B
Bodo Möller 已提交
2220

2221 2222 2223
    c = s->cert;
    if (!s->s3 || !s->s3->tmp.new_cipher)
        return NULL;
2224
    ssl_set_masks(s, s->s3->tmp.new_cipher);
B
Ben Laurie 已提交
2225

2226
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2227 2228 2229 2230 2231 2232
    /*
     * 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;
2233 2234
#endif

2235
    i = ssl_get_server_cert_index(s);
B
Ben Laurie 已提交
2236

2237 2238 2239
    /* This may or may not be an error. */
    if (i < 0)
        return NULL;
B
Ben Laurie 已提交
2240

2241 2242 2243
    /* May be NULL. */
    return &c->pkeys[i];
}
2244

2245 2246 2247 2248 2249 2250
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;
2251

2252 2253
    alg_a = cipher->algorithm_auth;
    c = s->cert;
2254

2255
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
    /*
     * 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)
2281
        *pmd = s->s3->tmp.md[idx];
2282 2283
    return c->pkeys[idx].privatekey;
}
2284

2285
int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
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
                                   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));
        }
    }
}
2335

2336
const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2337 2338 2339
{
    return ctx->method;
}
2340

2341
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2342 2343 2344
{
    return (s->method);
}
2345

2346
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
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 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438
{
    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);
    }
M
Matt Caswell 已提交
2439 2440 2441
    if ((i < 0) && SSL_want_async(s)) {
        return SSL_ERROR_WANT_ASYNC;
    }
2442 2443 2444 2445 2446 2447 2448 2449

    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);
}
2450

M
Matt Caswell 已提交
2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461
static int ssl_do_handshake_intern(void *vargs)
{
    struct ssl_async_args *args;
    SSL *s;

    args = (struct ssl_async_args *)vargs;
    s = args->s;

    return s->handshake_func(s);
}

2462
int SSL_do_handshake(SSL *s)
2463 2464 2465 2466 2467
{
    int ret = 1;

    if (s->handshake_func == NULL) {
        SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
M
Matt Caswell 已提交
2468
        return -1;
2469 2470 2471 2472 2473
    }

    s->method->ssl_renegotiate_check(s);

    if (SSL_in_init(s) || SSL_in_before(s)) {
M
Matt Caswell 已提交
2474 2475 2476 2477 2478
        if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
            struct ssl_async_args args;

            args.s = s;

2479
            ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
M
Matt Caswell 已提交
2480 2481 2482
        } else {
            ret = s->handshake_func(s);
        }
2483
    }
M
Matt Caswell 已提交
2484
    return ret;
2485 2486
}

2487
void SSL_set_accept_state(SSL *s)
2488 2489 2490
{
    s->server = 1;
    s->shutdown = 0;
M
Matt Caswell 已提交
2491
    ossl_statem_clear(s);
2492
    s->handshake_func = s->method->ssl_accept;
R
Rich Salz 已提交
2493
    clear_ciphers(s);
2494
}
2495

2496
void SSL_set_connect_state(SSL *s)
2497 2498 2499
{
    s->server = 0;
    s->shutdown = 0;
M
Matt Caswell 已提交
2500
    ossl_statem_clear(s);
2501
    s->handshake_func = s->method->ssl_connect;
R
Rich Salz 已提交
2502
    clear_ciphers(s);
2503
}
2504

2505
int ssl_undefined_function(SSL *s)
2506 2507 2508 2509
{
    SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2510

2511
int ssl_undefined_void_function(void)
2512 2513 2514 2515 2516
{
    SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2517

B
Ben Laurie 已提交
2518
int ssl_undefined_const_function(const SSL *s)
2519 2520 2521
{
    return (0);
}
B
Ben Laurie 已提交
2522

2523
SSL_METHOD *ssl_bad_method(int ver)
2524 2525 2526 2527
{
    SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (NULL);
}
2528

B
Ben Laurie 已提交
2529
const char *SSL_get_version(const SSL *s)
2530 2531 2532 2533 2534 2535 2536 2537 2538
{
    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
2539 2540 2541 2542 2543 2544
    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");
2545 2546 2547
    else
        return ("unknown");
}
2548

2549
SSL *SSL_dup(SSL *s)
2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563
{
    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
2564
        if (!SSL_copy_session_id(ret, s))
M
Matt Caswell 已提交
2565
            goto err;
2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578
    } 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
2579
            ssl_cert_free(ret->cert);
2580 2581 2582 2583 2584
            ret->cert = ssl_cert_dup(s->cert);
            if (ret->cert == NULL)
                goto err;
        }

V
Viktor Dukhovni 已提交
2585
        if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
M
Matt Caswell 已提交
2586
            goto err;
2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625
    }

    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
2626 2627
    ret->statem = s->statem;      /* SSL_dup does not really work at any state,
                                   * though */
2628
    RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2629 2630 2631 2632 2633
    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
2634 2635 2636
    ret->default_passwd_callback = s->default_passwd_callback;
    ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;

2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661
    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
2662
    return ret;
2663 2664

 err:
R
Rich Salz 已提交
2665 2666
    SSL_free(ret);
    return NULL;
2667
}
2668

2669
void ssl_clear_cipher_ctx(SSL *s)
2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680
{
    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;
    }
2681
#ifndef OPENSSL_NO_COMP
R
Rich Salz 已提交
2682 2683 2684 2685
    COMP_CTX_free(s->expand);
    s->expand = NULL;
    COMP_CTX_free(s->compress);
    s->compress = NULL;
2686 2687
#endif
}
2688

B
Ben Laurie 已提交
2689
X509 *SSL_get_certificate(const SSL *s)
2690 2691 2692 2693 2694 2695
{
    if (s->cert != NULL)
        return (s->cert->key->x509);
    else
        return (NULL);
}
2696

2697
EVP_PKEY *SSL_get_privatekey(const SSL *s)
2698 2699 2700 2701 2702 2703
{
    if (s->cert != NULL)
        return (s->cert->key->privatekey);
    else
        return (NULL);
}
2704

2705
X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2706 2707 2708 2709 2710 2711
{
    if (ctx->cert != NULL)
        return ctx->cert->key->x509;
    else
        return NULL;
}
2712 2713

EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2714 2715 2716 2717 2718 2719
{
    if (ctx->cert != NULL)
        return ctx->cert->key->privatekey;
    else
        return NULL;
}
2720

2721
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2722 2723 2724 2725 2726 2727
{
    if ((s->session != NULL) && (s->session->cipher != NULL))
        return (s->session->cipher);
    return (NULL);
}

2728
const COMP_METHOD *SSL_get_current_compression(SSL *s)
2729
{
R
Rich Salz 已提交
2730 2731 2732 2733 2734
#ifndef OPENSSL_NO_COMP
    return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
#else
    return NULL;
#endif
2735
}
2736 2737

const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2738
{
R
Rich Salz 已提交
2739 2740 2741 2742
#ifndef OPENSSL_NO_COMP
    return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
#else
    return NULL;
2743
#endif
R
Rich Salz 已提交
2744
}
2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774

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);
}
2775

2776
void ssl_free_wbio_buffer(SSL *s)
2777
{
R
Rich Salz 已提交
2778
    /* callers ensure s is never null */
2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797
    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;
}
2798

B
Ben Laurie 已提交
2799
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2800 2801 2802
{
    return (ctx->quiet_shutdown);
}
2803

2804 2805 2806 2807
void SSL_set_quiet_shutdown(SSL *s, int mode)
{
    s->quiet_shutdown = mode;
}
2808

B
Ben Laurie 已提交
2809
int SSL_get_quiet_shutdown(const SSL *s)
2810 2811 2812
{
    return (s->quiet_shutdown);
}
2813

2814 2815 2816 2817
void SSL_set_shutdown(SSL *s, int mode)
{
    s->shutdown = mode;
}
2818

B
Ben Laurie 已提交
2819
int SSL_get_shutdown(const SSL *s)
2820 2821 2822
{
    return (s->shutdown);
}
2823

B
Ben Laurie 已提交
2824
int SSL_version(const SSL *s)
2825 2826 2827
{
    return (s->version);
}
2828

B
Ben Laurie 已提交
2829
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2830 2831 2832 2833 2834 2835
{
    return (ssl->ctx);
}

SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
{
K
Kurt Roeckx 已提交
2836
    CERT *new_cert;
2837 2838 2839 2840
    if (ssl->ctx == ctx)
        return ssl->ctx;
    if (ctx == NULL)
        ctx = ssl->initial_ctx;
K
Kurt Roeckx 已提交
2841 2842 2843
    new_cert = ssl_cert_dup(ctx->cert);
    if (new_cert == NULL) {
        return NULL;
2844
    }
K
Kurt Roeckx 已提交
2845 2846
    ssl_cert_free(ssl->cert);
    ssl->cert = new_cert;
2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867

    /*
     * 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
2868
    SSL_CTX_free(ssl->ctx); /* decrement reference count */
2869 2870 2871 2872
    ssl->ctx = ctx;

    return (ssl->ctx);
}
2873

2874
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2875 2876 2877
{
    return (X509_STORE_set_default_paths(ctx->cert_store));
}
2878

2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909
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;
}

2910
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2911 2912 2913 2914
                                  const char *CApath)
{
    return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
}
2915

B
Ben Laurie 已提交
2916
void SSL_set_info_callback(SSL *ssl,
2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930
                           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;
}
2931

2932 2933 2934 2935
void SSL_set_verify_result(SSL *ssl, long arg)
{
    ssl->verify_result = arg;
}
2936

B
Ben Laurie 已提交
2937
long SSL_get_verify_result(const SSL *ssl)
2938 2939 2940 2941
{
    return (ssl->verify_result);
}

2942
size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
2943
{
2944
    if (outlen == 0)
2945 2946 2947 2948
        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);
2949
    return outlen;
2950 2951
}

2952
size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
2953
{
2954
    if (outlen == 0)
2955 2956 2957 2958
        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);
2959
    return outlen;
2960 2961
}

2962
size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
2963
                               unsigned char *out, size_t outlen)
2964
{
2965 2966 2967 2968
    if (session->master_key_length < 0) {
        /* Should never happen */
        return 0;
    }
2969 2970
    if (outlen == 0)
        return session->master_key_length;
2971
    if (outlen > (size_t)session->master_key_length)
2972 2973
        outlen = session->master_key_length;
    memcpy(out, session->master_key, outlen);
2974
    return outlen;
2975 2976
}

2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995
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_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));
}
2996

2997
int ssl_ok(SSL *s)
2998 2999 3000
{
    return (1);
}
3001

B
Ben Laurie 已提交
3002
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3003 3004 3005
{
    return (ctx->cert_store);
}
3006

3007 3008
void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
{
R
Rich Salz 已提交
3009
    X509_STORE_free(ctx->cert_store);
3010 3011
    ctx->cert_store = store;
}
3012

B
Ben Laurie 已提交
3013
int SSL_want(const SSL *s)
3014 3015 3016
{
    return (s->rwstate);
}
3017

3018
/**
3019 3020 3021 3022 3023
 * \brief Set the callback for generating temporary DH keys.
 * \param ctx the SSL context.
 * \param dh the callback
 */

3024
#ifndef OPENSSL_NO_DH
3025 3026 3027 3028 3029 3030
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);
}
3031

3032 3033 3034 3035 3036
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);
}
3037
#endif
3038

3039 3040
#ifndef OPENSSL_NO_PSK
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3041 3042 3043 3044 3045 3046
{
    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;
    }
3047
    OPENSSL_free(ctx->cert->psk_identity_hint);
3048
    if (identity_hint != NULL) {
3049 3050
        ctx->cert->psk_identity_hint = BUF_strdup(identity_hint);
        if (ctx->cert->psk_identity_hint == NULL)
3051 3052
            return 0;
    } else
3053
        ctx->cert->psk_identity_hint = NULL;
3054 3055
    return 1;
}
3056 3057

int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3058 3059 3060 3061 3062 3063 3064 3065
{
    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;
    }
3066
    OPENSSL_free(s->cert->psk_identity_hint);
3067
    if (identity_hint != NULL) {
3068 3069
        s->cert->psk_identity_hint = BUF_strdup(identity_hint);
        if (s->cert->psk_identity_hint == NULL)
3070 3071
            return 0;
    } else
3072
        s->cert->psk_identity_hint = NULL;
3073 3074
    return 1;
}
3075 3076

const char *SSL_get_psk_identity_hint(const SSL *s)
3077 3078 3079 3080 3081
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity_hint);
}
3082 3083

const char *SSL_get_psk_identity(const SSL *s)
3084 3085 3086 3087 3088
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity);
}
N
Nils Larsch 已提交
3089

3090
void SSL_set_psk_client_callback(SSL *s,
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))
{
    s->psk_client_callback = cb;
}
N
Nils Larsch 已提交
3102 3103

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114
                                     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
3115

3116
void SSL_set_psk_server_callback(SSL *s,
3117 3118 3119 3120 3121 3122 3123 3124
                                 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
3125 3126

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151
                                     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);
}
3152

3153
void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3154 3155 3156 3157 3158 3159 3160 3161
                                                int (*cb) (SSL *ssl,
                                                           int
                                                           is_forward_secure))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                          (void (*)(void))cb);
}

3162
void SSL_set_not_resumable_session_callback(SSL *ssl,
3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174
                                            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
3175
 */
3176

3177
EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3178
{
3179
    ssl_clear_hash_ctx(hash);
3180
    *hash = EVP_MD_CTX_new();
3181
    if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3182
        EVP_MD_CTX_free(*hash);
3183 3184 3185
        *hash = NULL;
        return NULL;
    }
3186
    return *hash;
3187
}
3188 3189

void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3190 3191
{

3192
    if (*hash)
3193
        EVP_MD_CTX_free(*hash);
3194
    *hash = NULL;
3195
}
3196

3197 3198 3199
/* Retrieve handshake hashes */
int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
{
3200
    EVP_MD_CTX *ctx = NULL;
3201 3202 3203 3204 3205
    EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
    int ret = EVP_MD_CTX_size(hdgst);
    if (ret < 0 || ret > outlen) {
        ret = 0;
        goto err;
3206
    }
3207
    ctx = EVP_MD_CTX_new();
3208 3209 3210 3211 3212 3213
    if (ctx == NULL) {
        ret = 0;
        goto err;
    }
    if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
        || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3214
        ret = 0;
3215
 err:
3216
    EVP_MD_CTX_free(ctx);
3217 3218 3219
    return ret;
}

3220
void SSL_set_debug(SSL *s, int debug)
3221 3222 3223
{
    s->debug = debug;
}
3224 3225

int SSL_cache_hit(SSL *s)
3226 3227 3228
{
    return s->hit;
}
3229

3230
int SSL_is_server(SSL *s)
3231 3232 3233
{
    return s->server;
}
3234

D
Dr. Stephen Henson 已提交
3235
void SSL_set_security_level(SSL *s, int level)
3236 3237 3238
{
    s->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3239 3240

int SSL_get_security_level(const SSL *s)
3241 3242 3243
{
    return s->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3244

3245 3246 3247 3248 3249 3250 3251
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
3252

3253 3254 3255 3256 3257
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
3258 3259

void SSL_set0_security_ex_data(SSL *s, void *ex)
3260 3261 3262
{
    s->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3263 3264

void *SSL_get0_security_ex_data(const SSL *s)
3265 3266 3267
{
    return s->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3268 3269

void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3270 3271 3272
{
    ctx->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3273 3274

int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3275 3276 3277
{
    return ctx->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3278

3279 3280 3281 3282 3283 3284 3285
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
3286

3287 3288 3289 3290 3291 3292 3293 3294
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
3295 3296

void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3297 3298 3299
{
    ctx->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3300 3301

void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3302 3303 3304
{
    return ctx->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3305

3306
IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);