ssl_lib.c 95.8 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

const char *SSL_version_str = OPENSSL_VERSION_TEXT;

SSL3_ENC_METHOD ssl3_undef_enc_method = {
    /*
     * evil casts, but these functions are only called if there's a library
     * bug
     */
    (int (*)(SSL *, int))ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
    ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, unsigned char *, int))
        ssl_undefined_function,
    (int (*)(SSL *, int))ssl_undefined_function,
    (int (*)(SSL *, const char *, int, unsigned char *))
        ssl_undefined_function,
    0,                          /* finish_mac_length */
    (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
    NULL,                       /* client_finished_label */
    0,                          /* client_finished_label_len */
    NULL,                       /* server_finished_label */
    0,                          /* server_finished_label_len */
    (int (*)(int))ssl_undefined_function,
    (int (*)(SSL *, unsigned char *, size_t, const char *,
             size_t, const unsigned char *, size_t,
             int use_context))ssl_undefined_function,
};
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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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    s->type = 0;
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    s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
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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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    ssl_clear_cipher_ctx(s);
    ssl_clear_hash_ctx(&s->read_hash);
    ssl_clear_hash_ctx(&s->write_hash);
    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.
     */
    if (!s->in_handshake && (s->session == NULL)
        && (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_malloc(sizeof(*s));
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    if (s == NULL)
        goto err;
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    memset(s, 0, sizeof(*s));
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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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    /*
     * 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();
    if (!s->param)
        goto err;
    X509_VERIFY_PARAM_inherit(s->param, ctx->param);
    s->quiet_shutdown = ctx->quiet_shutdown;
    s->max_send_fragment = ctx->max_send_fragment;
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    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
    s->ctx = ctx;
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#ifndef OPENSSL_NO_TLSEXT
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    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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#endif
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    s->verify_result = X509_V_OK;
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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->references = 1;
    s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
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    if (!SSL_clear(s))
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        goto err;
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    CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
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#ifndef OPENSSL_NO_PSK
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    s->psk_client_callback = ctx->psk_client_callback;
    s->psk_server_callback = ctx->psk_server_callback;
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#endif

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    return (s);
 err:
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    SSL_free(s);
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    SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
    return (NULL);
}
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int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
                                   unsigned int sid_ctx_len)
{
    if (sid_ctx_len > sizeof ctx->sid_ctx) {
        SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
               SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
        return 0;
    }
    ctx->sid_ctx_length = sid_ctx_len;
    memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
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    return 1;
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}
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int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
                               unsigned int sid_ctx_len)
{
    if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
        SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
               SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
        return 0;
    }
    ssl->sid_ctx_length = sid_ctx_len;
    memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
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    return 1;
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}
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int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
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{
    CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
    ctx->generate_session_id = cb;
    CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
    return 1;
}
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int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
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{
    CRYPTO_w_lock(CRYPTO_LOCK_SSL);
    ssl->generate_session_id = cb;
    CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
    return 1;
}
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int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
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                                unsigned int id_len)
{
    /*
     * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
     * we can "construct" a session to give us the desired check - ie. to
     * find if there's a session in the hash table that would conflict with
     * any new session built out of this id/id_len and the ssl_version in use
     * by this SSL.
     */
    SSL_SESSION r, *p;

    if (id_len > sizeof r.session_id)
        return 0;

    r.ssl_version = ssl->version;
    r.session_id_length = id_len;
    memcpy(r.session_id, id, id_len);

    CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
    p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
    CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
    return (p != NULL);
}
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int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
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{
    return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
}
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int SSL_set_purpose(SSL *s, int purpose)
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{
    return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
}
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int SSL_CTX_set_trust(SSL_CTX *s, int trust)
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{
    return X509_VERIFY_PARAM_set_trust(s->param, trust);
}
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int SSL_set_trust(SSL *s, int trust)
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{
    return X509_VERIFY_PARAM_set_trust(s->param, trust);
}
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int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
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{
    return X509_VERIFY_PARAM_set1(ctx->param, vpm);
}
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int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
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{
    return X509_VERIFY_PARAM_set1(ssl->param, vpm);
}
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X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
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{
    return ctx->param;
}
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X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
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{
    return ssl->param;
}
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void SSL_certs_clear(SSL *s)
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{
    ssl_cert_clear_certs(s->cert);
}
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void SSL_free(SSL *s)
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{
    int i;
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    if (s == NULL)
        return;
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    i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
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#ifdef REF_PRINT
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    REF_PRINT("SSL", s);
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#endif
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    if (i > 0)
        return;
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#ifdef REF_CHECK
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    if (i < 0) {
        fprintf(stderr, "SSL_free, bad reference count\n");
        abort();                /* ok */
    }
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#endif
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    X509_VERIFY_PARAM_free(s->param);
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    CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);

    if (s->bbio != NULL) {
        /* If the buffering BIO is in place, pop it off */
        if (s->bbio == s->wbio) {
            s->wbio = BIO_pop(s->wbio);
        }
        BIO_free(s->bbio);
        s->bbio = NULL;
    }
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    BIO_free_all(s->rbio);
    if (s->wbio != s->rbio)
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        BIO_free_all(s->wbio);

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

    ssl_clear_cipher_ctx(s);
    ssl_clear_hash_ctx(&s->read_hash);
    ssl_clear_hash_ctx(&s->write_hash);
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    ssl_cert_free(s->cert);
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    /* Free up if allocated */
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#ifndef OPENSSL_NO_TLSEXT
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    OPENSSL_free(s->tlsext_hostname);
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    SSL_CTX_free(s->initial_ctx);
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# ifndef OPENSSL_NO_EC
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    OPENSSL_free(s->tlsext_ecpointformatlist);
    OPENSSL_free(s->tlsext_ellipticcurvelist);
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# endif                         /* OPENSSL_NO_EC */
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    sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
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    sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
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    OPENSSL_free(s->tlsext_ocsp_resp);
    OPENSSL_free(s->alpn_client_proto_list);
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#endif

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    sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
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    if (s->method != NULL)
        s->method->ssl_free(s);

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

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

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

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

    OPENSSL_free(s);
}

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

void SSL_set_wbio(SSL *s, BIO *wbio)
601 602 603 604 605 606 607 608 609 610
{
    /*
     * If the output buffering BIO is still in place, remove it
     */
    if (s->bbio != NULL) {
        if (s->wbio == s->bbio) {
            s->wbio = s->wbio->next_bio;
            s->bbio->next_bio = NULL;
        }
    }
R
Rich Salz 已提交
611
    if (s->wbio != wbio && s->rbio != s->wbio)
612 613 614
        BIO_free_all(s->wbio);
    s->wbio = wbio;
}
615

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

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

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

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

B
Ben Laurie 已提交
637
int SSL_get_rfd(const SSL *s)
638 639 640 641 642 643 644 645 646 647
{
    int ret = -1;
    BIO *b, *r;

    b = SSL_get_rbio(s);
    r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
    if (r != NULL)
        BIO_get_fd(r, &ret);
    return (ret);
}
648

B
Ben Laurie 已提交
649
int SSL_get_wfd(const SSL *s)
650 651 652 653 654 655 656 657 658 659
{
    int ret = -1;
    BIO *b, *r;

    b = SSL_get_wbio(s);
    r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
    if (r != NULL)
        BIO_get_fd(r, &ret);
    return (ret);
}
660

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

    bio = BIO_new(BIO_s_socket());

    if (bio == NULL) {
        SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
        goto err;
    }
    BIO_set_fd(bio, fd, BIO_NOCLOSE);
    SSL_set_bio(s, bio, bio);
    ret = 1;
 err:
    return (ret);
}
679

680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
int SSL_set_wfd(SSL *s, int fd)
{
    int ret = 0;
    BIO *bio = NULL;

    if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
        || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
        bio = BIO_new(BIO_s_socket());

        if (bio == NULL) {
            SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
            goto err;
        }
        BIO_set_fd(bio, fd, BIO_NOCLOSE);
        SSL_set_bio(s, SSL_get_rbio(s), bio);
    } else
        SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
    ret = 1;
 err:
    return (ret);
}

int SSL_set_rfd(SSL *s, int fd)
{
    int ret = 0;
    BIO *bio = NULL;

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

        if (bio == NULL) {
            SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
            goto err;
        }
        BIO_set_fd(bio, fd, BIO_NOCLOSE);
        SSL_set_bio(s, bio, SSL_get_wbio(s));
    } else
        SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
    ret = 1;
 err:
    return (ret);
}
#endif
724 725

/* return length of latest Finished message we sent, copy to 'buf' */
B
Ben Laurie 已提交
726
size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
727 728 729 730 731 732 733 734 735 736 737
{
    size_t ret = 0;

    if (s->s3 != NULL) {
        ret = s->s3->tmp.finish_md_len;
        if (count > ret)
            count = ret;
        memcpy(buf, s->s3->tmp.finish_md, count);
    }
    return ret;
}
738 739

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

744 745 746 747 748 749 750 751
    if (s->s3 != NULL) {
        ret = s->s3->tmp.peer_finish_md_len;
        if (count > ret)
            count = ret;
        memcpy(buf, s->s3->tmp.peer_finish_md, count);
    }
    return ret;
}
752

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

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

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

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

B
Ben Laurie 已提交
772
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
{
    return X509_VERIFY_PARAM_get_depth(ctx->param);
}

int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
    return (ctx->default_verify_callback);
}

void SSL_set_verify(SSL *s, int mode,
                    int (*callback) (int ok, X509_STORE_CTX *ctx))
{
    s->verify_mode = mode;
    if (callback != NULL)
        s->verify_callback = callback;
}

void SSL_set_verify_depth(SSL *s, int depth)
{
    X509_VERIFY_PARAM_set_depth(s->param, depth);
}

void SSL_set_read_ahead(SSL *s, int yes)
{
796
    RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
797
}
798

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

B
Ben Laurie 已提交
804
int SSL_pending(const SSL *s)
805 806 807 808 809 810 811 812 813 814
{
    /*
     * SSL_pending cannot work properly if read-ahead is enabled
     * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
     * impossible to fix since SSL_pending cannot report errors that may be
     * observed while scanning the new data. (Note that SSL_pending() is
     * often used as a boolean value, so we'd better not return -1.)
     */
    return (s->method->ssl_pending(s));
}
815

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

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

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

828 829 830 831
    CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);

    return (r);
}
832

B
Ben Laurie 已提交
833
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854
{
    STACK_OF(X509) *r;

    if ((s == NULL) || (s->session == NULL)
        || (s->session->sess_cert == NULL))
        r = NULL;
    else
        r = s->session->sess_cert->cert_chain;

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

    return (r);
}

/*
 * 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
855
int SSL_copy_session_id(SSL *t, const SSL *f)
856 857
{
    /* Do we need to to SSL locking? */
V
Viktor Dukhovni 已提交
858
    if (!SSL_set_session(t, SSL_get_session(f))) {
M
Matt Caswell 已提交
859
        return 0;
M
Matt Caswell 已提交
860
    }
861 862 863 864 865 866 867 868 869 870

    /*
     * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
     */
    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
871 872 873
    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
874
    if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
M
Matt Caswell 已提交
875
        return 0;
M
Matt Caswell 已提交
876
    }
M
Matt Caswell 已提交
877 878

    return 1;
879
}
880

881
/* Fix this so it checks all the valid key/cert options */
B
Ben Laurie 已提交
882
int SSL_CTX_check_private_key(const SSL_CTX *ctx)
883 884
{
    if ((ctx == NULL) ||
K
Kurt Roeckx 已提交
885
        (ctx->cert->key->x509 == NULL)) {
886 887 888 889 890 891 892 893 894 895 896 897
        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));
}
898

899
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
900
int SSL_check_private_key(const SSL *ssl)
901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916
{
    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));
}
917

918
int SSL_accept(SSL *s)
919 920 921 922
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_accept_state(s);
923

924 925
    return (s->method->ssl_accept(s));
}
926

927
int SSL_connect(SSL *s)
928 929 930 931
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_connect_state(s);
932

933 934
    return (s->method->ssl_connect(s));
}
935

B
Ben Laurie 已提交
936
long SSL_get_default_timeout(const SSL *s)
937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981
{
    return (s->method->get_timeout());
}

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

    if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
        s->rwstate = SSL_NOTHING;
        return (0);
    }
    return (s->method->ssl_read(s, buf, num));
}

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

    if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
        return (0);
    }
    return (s->method->ssl_peek(s, buf, num));
}

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

    if (s->shutdown & SSL_SENT_SHUTDOWN) {
        s->rwstate = SSL_NOTHING;
        SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
        return (-1);
    }
    return (s->method->ssl_write(s, buf, num));
}
982

983
int SSL_shutdown(SSL *s)
984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
{
    /*
     * 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;
    }

    if ((s != NULL) && !SSL_in_init(s))
        return (s->method->ssl_shutdown(s));
    else
        return (1);
}
1002

1003
int SSL_renegotiate(SSL *s)
1004 1005 1006
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
D
Dr. Stephen Henson 已提交
1007

1008
    s->new_session = 1;
D
Dr. Stephen Henson 已提交
1009

1010 1011
    return (s->method->ssl_renegotiate(s));
}
1012

D
Dr. Stephen Henson 已提交
1013
int SSL_renegotiate_abbreviated(SSL *s)
1014 1015 1016
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
B
Bodo Möller 已提交
1017

1018
    s->new_session = 0;
B
Bodo Möller 已提交
1019

1020 1021
    return (s->method->ssl_renegotiate(s));
}
D
Dr. Stephen Henson 已提交
1022

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

long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
{
    switch (cmd) {
    case SSL_CTRL_SET_MSG_CALLBACK:
        s->msg_callback = (void (*)
                           (int write_p, int version, int content_type,
                            const void *buf, size_t len, SSL *ssl,
                            void *arg))(fp);
        return 1;

    default:
        return (s->method->ssl_callback_ctrl(s, cmd, fp));
    }
}
1111

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

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

    switch (cmd) {
    case SSL_CTRL_GET_READ_AHEAD:
        return (ctx->read_ahead);
    case SSL_CTRL_SET_READ_AHEAD:
        l = ctx->read_ahead;
        ctx->read_ahead = larg;
        return (l);

    case SSL_CTRL_SET_MSG_CALLBACK_ARG:
        ctx->msg_callback_arg = parg;
        return 1;

    case SSL_CTRL_GET_MAX_CERT_LIST:
        return (ctx->max_cert_list);
    case SSL_CTRL_SET_MAX_CERT_LIST:
        l = ctx->max_cert_list;
        ctx->max_cert_list = larg;
        return (l);

    case SSL_CTRL_SET_SESS_CACHE_SIZE:
        l = ctx->session_cache_size;
        ctx->session_cache_size = larg;
        return (l);
    case SSL_CTRL_GET_SESS_CACHE_SIZE:
        return (ctx->session_cache_size);
    case SSL_CTRL_SET_SESS_CACHE_MODE:
        l = ctx->session_cache_mode;
        ctx->session_cache_mode = larg;
        return (l);
    case SSL_CTRL_GET_SESS_CACHE_MODE:
        return (ctx->session_cache_mode);

    case SSL_CTRL_SESS_NUMBER:
        return (lh_SSL_SESSION_num_items(ctx->sessions));
    case SSL_CTRL_SESS_CONNECT:
        return (ctx->stats.sess_connect);
    case SSL_CTRL_SESS_CONNECT_GOOD:
        return (ctx->stats.sess_connect_good);
    case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
        return (ctx->stats.sess_connect_renegotiate);
    case SSL_CTRL_SESS_ACCEPT:
        return (ctx->stats.sess_accept);
    case SSL_CTRL_SESS_ACCEPT_GOOD:
        return (ctx->stats.sess_accept_good);
    case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
        return (ctx->stats.sess_accept_renegotiate);
    case SSL_CTRL_SESS_HIT:
        return (ctx->stats.sess_hit);
    case SSL_CTRL_SESS_CB_HIT:
        return (ctx->stats.sess_cb_hit);
    case SSL_CTRL_SESS_MISSES:
        return (ctx->stats.sess_miss);
    case SSL_CTRL_SESS_TIMEOUTS:
        return (ctx->stats.sess_timeout);
    case SSL_CTRL_SESS_CACHE_FULL:
        return (ctx->stats.sess_cache_full);
    case SSL_CTRL_OPTIONS:
        return (ctx->options |= larg);
    case SSL_CTRL_CLEAR_OPTIONS:
        return (ctx->options &= ~larg);
    case SSL_CTRL_MODE:
        return (ctx->mode |= larg);
    case SSL_CTRL_CLEAR_MODE:
        return (ctx->mode &= ~larg);
    case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
        if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
            return 0;
        ctx->max_send_fragment = larg;
        return 1;
    case SSL_CTRL_CERT_FLAGS:
        return (ctx->cert->cert_flags |= larg);
    case SSL_CTRL_CLEAR_CERT_FLAGS:
        return (ctx->cert->cert_flags &= ~larg);
    default:
        return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
    }
}

long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
{
    switch (cmd) {
    case SSL_CTRL_SET_MSG_CALLBACK:
        ctx->msg_callback = (void (*)
                             (int write_p, int version, int content_type,
                              const void *buf, size_t len, SSL *ssl,
                              void *arg))(fp);
        return 1;

    default:
        return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
    }
}
1227

1228
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
{
    long l;

    l = a->id - b->id;
    if (l == 0L)
        return (0);
    else
        return ((l > 0) ? 1 : -1);
}

int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
                          const SSL_CIPHER *const *bp)
{
    long l;

    l = (*ap)->id - (*bp)->id;
    if (l == 0L)
        return (0);
    else
        return ((l > 0) ? 1 : -1);
}
1250

1251
/** return a STACK of the ciphers available for the SSL and in order of
1252
 * preference */
B
Ben Laurie 已提交
1253
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
{
    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);
}

1265
STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287
{
    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;
}
1288

1289
/** return a STACK of the ciphers available for the SSL and in order of
1290
 * algorithm id */
B
Ben Laurie 已提交
1291
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1292 1293 1294 1295 1296 1297 1298 1299 1300 1301
{
    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);
}
1302

1303
/** The old interface to get the same thing as SSL_get_ciphers() */
1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318
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);
}
1319

1320
/** specify the ciphers to be used by default by the SSL_CTX */
1321
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
{
    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;
}
1342

1343
/** specify the ciphers to be used by the SSL */
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358
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;
}
1359 1360

/* works well for SSLv2, not so good for SSLv3 */
1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396
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);
}

D
Typo.  
Dr. Stephen Henson 已提交
1397
#ifndef OPENSSL_NO_TLSEXT
1398
/** return a servername extension value if provided in Client Hello, or NULL.
1399
 * So far, only host_name types are defined (RFC 3546).
1400 1401
 */

1402
const char *SSL_get_servername(const SSL *s, const int type)
1403 1404 1405
{
    if (type != TLSEXT_NAMETYPE_host_name)
        return NULL;
B
Bodo Möller 已提交
1406

1407 1408 1409
    return s->session && !s->tlsext_hostname ?
        s->session->tlsext_hostname : s->tlsext_hostname;
}
1410

1411
int SSL_get_servername_type(const SSL *s)
1412 1413 1414 1415 1416 1417 1418
{
    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
1419

1420 1421
/*
 * SSL_select_next_proto implements the standard protocol selection. It is
B
Ben Laurie 已提交
1422
 * expected that this function is called from the callback set by
1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438
 * 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
1439
 */
1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477
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
1478

1479
# ifndef OPENSSL_NO_NEXTPROTONEG
1480 1481 1482 1483 1484 1485
/*
 * 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
1486 1487
 * provided by the callback.
 */
1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
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
1522 1523
 * 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|).
1524 1525 1526 1527 1528
 * 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
1529
 */
1530 1531 1532 1533 1534 1535 1536 1537 1538 1539
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;
}
B
Ben Laurie 已提交
1540
# endif
1541

1542 1543
/*
 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
A
Adam Langley 已提交
1544
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1545 1546 1547 1548 1549
 * 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
1550
    OPENSSL_free(ctx->alpn_client_proto_list);
1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561
    ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
    if (!ctx->alpn_client_proto_list)
        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
1562
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1563 1564 1565 1566 1567
 * 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
1568
    OPENSSL_free(ssl->alpn_client_proto_list);
1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
    ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
    if (!ssl->alpn_client_proto_list)
        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
1601
void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
                            unsigned *len)
{
    *data = NULL;
    if (ssl->s3)
        *data = ssl->s3->alpn_selected;
    if (*data == NULL)
        *len = 0;
    else
        *len = ssl->s3->alpn_selected_len;
}

#endif                          /* !OPENSSL_NO_TLSEXT */
1614

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

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

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

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

/*
 * NB: If this function (or indeed the hash function which uses a sort of
1642
 * coarser function than this one) is changed, ensure
1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657
 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
 * being able to construct an SSL_SESSION that will collide with any existing
 * session with a matching session ID.
 */
static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
{
    if (a->ssl_version != b->ssl_version)
        return (1);
    if (a->session_id_length != b->session_id_length)
        return (1);
    return (memcmp(a->session_id, b->session_id, a->session_id_length));
}

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

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

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

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

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

1687
    memset(ret, 0, sizeof(*ret));
1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704

    ret->method = meth;

    ret->cert_store = NULL;
    ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
    ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
    ret->session_cache_head = NULL;
    ret->session_cache_tail = NULL;

    /* We take the system default */
    ret->session_timeout = meth->get_timeout();

    ret->new_session_cb = 0;
    ret->remove_session_cb = 0;
    ret->get_session_cb = 0;
    ret->generate_session_id = 0;

1705
    memset(&ret->stats, 0, sizeof(ret->stats));
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734

    ret->references = 1;
    ret->quiet_shutdown = 0;
    ret->info_callback = NULL;
    ret->app_verify_callback = 0;
    ret->app_verify_arg = NULL;
    ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
    ret->read_ahead = 0;
    ret->msg_callback = 0;
    ret->msg_callback_arg = NULL;
    ret->verify_mode = SSL_VERIFY_NONE;
    ret->sid_ctx_length = 0;
    ret->default_verify_callback = NULL;
    if ((ret->cert = ssl_cert_new()) == NULL)
        goto err;

    ret->default_passwd_callback = 0;
    ret->default_passwd_callback_userdata = NULL;
    ret->client_cert_cb = 0;
    ret->app_gen_cookie_cb = 0;
    ret->app_verify_cookie_cb = 0;

    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
1735
    if (!ssl_create_cipher_list(ret->method,
1736
                           &ret->cipher_list, &ret->cipher_list_by_id,
M
Matt Caswell 已提交
1737 1738
                           SSL_DEFAULT_CIPHER_LIST, ret->cert)
       || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766
        SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
        goto err2;
    }

    ret->param = X509_VERIFY_PARAM_new();
    if (!ret->param)
        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);

    ret->extra_certs = NULL;
    /* 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;
1767

1768
#ifndef OPENSSL_NO_TLSEXT
1769 1770 1771
    ret->tlsext_servername_callback = 0;
    ret->tlsext_servername_arg = NULL;
    /* Setup RFC4507 ticket keys */
M
Matt Caswell 已提交
1772
    if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1773 1774 1775
        || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
        || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
        ret->options |= SSL_OP_NO_TICKET;
1776

1777 1778
    ret->tlsext_status_cb = 0;
    ret->tlsext_status_arg = NULL;
1779

B
Ben Laurie 已提交
1780
# ifndef OPENSSL_NO_NEXTPROTONEG
1781 1782
    ret->next_protos_advertised_cb = 0;
    ret->next_proto_select_cb = 0;
B
Ben Laurie 已提交
1783
# endif
1784 1785
#endif
#ifndef OPENSSL_NO_PSK
1786 1787 1788
    ret->psk_identity_hint = NULL;
    ret->psk_client_callback = NULL;
    ret->psk_server_callback = NULL;
B
Ben Laurie 已提交
1789
#endif
B
Ben Laurie 已提交
1790
#ifndef OPENSSL_NO_SRP
V
Viktor Dukhovni 已提交
1791
    if (!SSL_CTX_SRP_CTX_init(ret))
M
Matt Caswell 已提交
1792
        goto err;
B
Ben Laurie 已提交
1793
#endif
1794
#ifndef OPENSSL_NO_ENGINE
1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822
    ret->client_cert_engine = NULL;
# 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
1823
    SSL_CTX_free(ret);
1824 1825
    return (NULL);
}
1826

1827
void SSL_CTX_free(SSL_CTX *a)
1828 1829
{
    int i;
1830

1831 1832
    if (a == NULL)
        return;
1833

1834
    i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1835
#ifdef REF_PRINT
1836
    REF_PRINT("SSL_CTX", a);
1837
#endif
1838 1839
    if (i > 0)
        return;
1840
#ifdef REF_CHECK
1841 1842 1843 1844 1845 1846
    if (i < 0) {
        fprintf(stderr, "SSL_CTX_free, bad reference count\n");
        abort();                /* ok */
    }
#endif

R
Rich Salz 已提交
1847
    X509_VERIFY_PARAM_free(a->param);
1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861

    /*
     * 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
1862
    lh_SSL_SESSION_free(a->sessions);
R
Rich Salz 已提交
1863
    X509_STORE_free(a->cert_store);
R
Rich Salz 已提交
1864 1865
    sk_SSL_CIPHER_free(a->cipher_list);
    sk_SSL_CIPHER_free(a->cipher_list_by_id);
R
Rich Salz 已提交
1866
    ssl_cert_free(a->cert);
R
Rich Salz 已提交
1867 1868
    sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
    sk_X509_pop_free(a->extra_certs, X509_free);
1869
    a->comp_methods = NULL;
P
Piotr Sikora 已提交
1870
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
1871
    sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
P
Piotr Sikora 已提交
1872
#endif
1873
#ifndef OPENSSL_NO_PSK
R
Rich Salz 已提交
1874
    OPENSSL_free(a->psk_identity_hint);
1875
#endif
B
Ben Laurie 已提交
1876
#ifndef OPENSSL_NO_SRP
1877
    SSL_CTX_SRP_CTX_free(a);
B
Ben Laurie 已提交
1878
#endif
1879
#ifndef OPENSSL_NO_ENGINE
1880 1881
    if (a->client_cert_engine)
        ENGINE_finish(a->client_cert_engine);
1882
#endif
B
Ben Laurie 已提交
1883

1884 1885
#ifndef OPENSSL_NO_TLSEXT
# ifndef OPENSSL_NO_EC
R
Rich Salz 已提交
1886 1887 1888 1889
    OPENSSL_free(a->tlsext_ecpointformatlist);
    OPENSSL_free(a->tlsext_ellipticcurvelist);
# endif
    OPENSSL_free(a->alpn_client_proto_list);
B
Ben Laurie 已提交
1890 1891
#endif

1892 1893
    OPENSSL_free(a);
}
1894

1895
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934
{
    ctx->default_passwd_callback = cb;
}

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

void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
                                      int (*cb) (X509_STORE_CTX *, void *),
                                      void *arg)
{
    ctx->app_verify_callback = cb;
    ctx->app_verify_arg = arg;
}

void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
                        int (*cb) (int, X509_STORE_CTX *))
{
    ctx->verify_mode = mode;
    ctx->default_verify_callback = cb;
}

void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
{
    X509_VERIFY_PARAM_set_depth(ctx->param, depth);
}

void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
                         void *arg)
{
    ssl_cert_set_cert_cb(c->cert, cb, arg);
}

void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
{
    ssl_cert_set_cert_cb(s->cert, cb, arg);
}
1935

1936
void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1937 1938 1939 1940 1941 1942
{
    CERT_PKEY *cpk;
    int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
    int rsa_enc_export, dh_rsa_export, dh_dsa_export;
    int rsa_tmp_export, dh_tmp_export, kl;
    unsigned long mask_k, mask_a, emask_k, emask_a;
1943
#ifndef OPENSSL_NO_EC
1944 1945 1946 1947 1948
    int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
    int have_ecdh_tmp, ecdh_ok;
    X509 *x = NULL;
    EVP_PKEY *ecc_pkey = NULL;
    int signature_nid = 0, pk_nid = 0, md_nid = 0;
1949
#endif
1950 1951
    if (c == NULL)
        return;
1952

1953
    kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1954

1955
#ifndef OPENSSL_NO_RSA
1956 1957 1958
    rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
    rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
                      (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
1959
#else
1960
    rsa_tmp = rsa_tmp_export = 0;
1961
#endif
1962
#ifndef OPENSSL_NO_DH
1963 1964 1965 1966
    dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
    dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
                                        (dh_tmp
                                         && DH_size(c->dh_tmp) * 8 <= kl));
1967
#else
1968
    dh_tmp = dh_tmp_export = 0;
1969 1970
#endif

1971
#ifndef OPENSSL_NO_EC
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984
    have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
#endif
    cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
    rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
    rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
    rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
    cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
    dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
    cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
    dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
    dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
1985
/* FIX THIS EAY EAY EAY */
1986 1987 1988
    dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
    dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_ECC]);
1989
#ifndef OPENSSL_NO_EC
1990
    have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
1991
#endif
1992 1993 1994 1995
    mask_k = 0;
    mask_a = 0;
    emask_k = 0;
    emask_a = 0;
1996

1997
#ifdef CIPHER_DEBUG
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
    fprintf(stderr,
            "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
            rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
            rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
#endif

    cpk = &(c->pkeys[SSL_PKEY_GOST01]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST01;
    }
    cpk = &(c->pkeys[SSL_PKEY_GOST94]);
    if (cpk->x509 != NULL && cpk->privatekey != NULL) {
        mask_k |= SSL_kGOST;
        mask_a |= SSL_aGOST94;
    }

    if (rsa_enc || (rsa_tmp && rsa_sign))
        mask_k |= SSL_kRSA;
    if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
        emask_k |= SSL_kRSA;
2019

2020 2021
    if (dh_tmp_export)
        emask_k |= SSL_kDHE;
2022

2023 2024
    if (dh_tmp)
        mask_k |= SSL_kDHE;
2025

2026 2027 2028 2029
    if (dh_rsa)
        mask_k |= SSL_kDHr;
    if (dh_rsa_export)
        emask_k |= SSL_kDHr;
2030

2031 2032 2033 2034
    if (dh_dsa)
        mask_k |= SSL_kDHd;
    if (dh_dsa_export)
        emask_k |= SSL_kDHd;
2035

2036 2037
    if (emask_k & (SSL_kDHr | SSL_kDHd))
        mask_a |= SSL_aDH;
2038

2039 2040 2041 2042
    if (rsa_enc || rsa_sign) {
        mask_a |= SSL_aRSA;
        emask_a |= SSL_aRSA;
    }
2043

2044 2045 2046 2047
    if (dsa_sign) {
        mask_a |= SSL_aDSS;
        emask_a |= SSL_aDSS;
    }
2048

2049 2050
    mask_a |= SSL_aNULL;
    emask_a |= SSL_aNULL;
2051

2052 2053 2054 2055
    /*
     * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
     * depending on the key usage extension.
     */
2056
#ifndef OPENSSL_NO_EC
2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099
    if (have_ecc_cert) {
        cpk = &c->pkeys[SSL_PKEY_ECC];
        x = cpk->x509;
        /* This call populates extension flags (ex_flags) */
        X509_check_purpose(x, -1, 0);
        ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
            (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
        ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
            (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
        if (!(cpk->valid_flags & CERT_PKEY_SIGN))
            ecdsa_ok = 0;
        ecc_pkey = X509_get_pubkey(x);
        ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
        EVP_PKEY_free(ecc_pkey);
        if ((x->sig_alg) && (x->sig_alg->algorithm)) {
            signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
            OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
        }
        if (ecdh_ok) {

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

            if (pk_nid == NID_X9_62_id_ecPublicKey) {
                mask_k |= SSL_kECDHe;
                mask_a |= SSL_aECDH;
                if (ecc_pkey_size <= 163) {
                    emask_k |= SSL_kECDHe;
                    emask_a |= SSL_aECDH;
                }
            }
        }
        if (ecdsa_ok) {
            mask_a |= SSL_aECDSA;
            emask_a |= SSL_aECDSA;
        }
    }
2100
#endif
B
Bodo Möller 已提交
2101

2102
#ifndef OPENSSL_NO_EC
2103 2104 2105 2106
    if (have_ecdh_tmp) {
        mask_k |= SSL_kECDHE;
        emask_k |= SSL_kECDHE;
    }
B
Bodo Möller 已提交
2107
#endif
2108 2109

#ifndef OPENSSL_NO_PSK
2110 2111 2112 2113
    mask_k |= SSL_kPSK;
    mask_a |= SSL_aPSK;
    emask_k |= SSL_kPSK;
    emask_a |= SSL_aPSK;
2114 2115
#endif

2116 2117 2118 2119 2120 2121
    c->mask_k = mask_k;
    c->mask_a = mask_a;
    c->export_mask_k = emask_k;
    c->export_mask_a = emask_a;
    c->valid = 1;
}
2122

B
Bodo Möller 已提交
2123 2124
/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
#define ku_reject(x, usage) \
2125
        (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
B
Bodo Möller 已提交
2126

2127 2128
#ifndef OPENSSL_NO_EC

2129
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192
{
    unsigned long alg_k, alg_a;
    EVP_PKEY *pkey = NULL;
    int keysize = 0;
    int signature_nid = 0, md_nid = 0, pk_nid = 0;
    const SSL_CIPHER *cs = s->s3->tmp.new_cipher;

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

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

    /* This call populates the ex_flags field correctly */
    X509_check_purpose(x, -1, 0);
    if ((x->sig_alg) && (x->sig_alg->algorithm)) {
        signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
        OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
    }
    if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
        /* key usage, if present, must allow key agreement */
        if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
            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 */
        if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
            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
2193

2194 2195
#endif

2196
static int ssl_get_server_cert_index(const SSL *s)
2197 2198 2199 2200 2201 2202 2203 2204 2205
{
    int idx;
    idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
    if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
        idx = SSL_PKEY_RSA_SIGN;
    if (idx == -1)
        SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    return idx;
}
B
Ben Laurie 已提交
2206

2207
CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2208 2209 2210
{
    CERT *c;
    int i;
B
Bodo Möller 已提交
2211

2212 2213 2214 2215
    c = s->cert;
    if (!s->s3 || !s->s3->tmp.new_cipher)
        return NULL;
    ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
B
Ben Laurie 已提交
2216

2217
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2218 2219 2220 2221 2222 2223
    /*
     * 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;
2224 2225
#endif

2226
    i = ssl_get_server_cert_index(s);
B
Ben Laurie 已提交
2227

2228 2229 2230
    /* This may or may not be an error. */
    if (i < 0)
        return NULL;
B
Ben Laurie 已提交
2231

2232 2233 2234
    /* May be NULL. */
    return &c->pkeys[i];
}
2235

2236 2237 2238 2239 2240 2241
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;
2242

2243 2244
    alg_a = cipher->algorithm_auth;
    c = s->cert;
2245

2246
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
    /*
     * 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)
2272
        *pmd = s->s3->tmp.md[idx];
2273 2274
    return c->pkeys[idx].privatekey;
}
2275

B
Ben Laurie 已提交
2276
#ifndef OPENSSL_NO_TLSEXT
2277
int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327
                                   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;
}
#endif

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));
        }
    }
}
2328

2329
const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2330 2331 2332
{
    return ctx->method;
}
2333

2334
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2335 2336 2337
{
    return (s->method);
}
2338

2339
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 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 2439
{
    int conn = -1;
    int ret = 1;

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

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

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

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

    if (i > 0)
        return (SSL_ERROR_NONE);

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

    if ((i < 0) && SSL_want_read(s)) {
        bio = SSL_get_rbio(s);
        if (BIO_should_read(bio))
            return (SSL_ERROR_WANT_READ);
        else if (BIO_should_write(bio))
            /*
             * This one doesn't make too much sense ... We never try to write
             * to the rbio, and an application program where rbio and wbio
             * are separate couldn't even know what it should wait for.
             * However if we ever set s->rwstate incorrectly (so that we have
             * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
             * wbio *are* the same, this test works around that bug; so it
             * might be safer to keep it.
             */
            return (SSL_ERROR_WANT_WRITE);
        else if (BIO_should_io_special(bio)) {
            reason = BIO_get_retry_reason(bio);
            if (reason == BIO_RR_CONNECT)
                return (SSL_ERROR_WANT_CONNECT);
            else if (reason == BIO_RR_ACCEPT)
                return (SSL_ERROR_WANT_ACCEPT);
            else
                return (SSL_ERROR_SYSCALL); /* unknown */
        }
    }

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

    if (i == 0) {
        if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
            (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
            return (SSL_ERROR_ZERO_RETURN);
    }
    return (SSL_ERROR_SYSCALL);
}
2440

2441
int SSL_do_handshake(SSL *s)
2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461
{
    int ret = 1;

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

    s->method->ssl_renegotiate_check(s);

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

/*
 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
 * calls will reset it
 */
2462
void SSL_set_accept_state(SSL *s)
2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
{
    s->server = 1;
    s->shutdown = 0;
    s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
    s->handshake_func = s->method->ssl_accept;
    /* clear the current cipher */
    ssl_clear_cipher_ctx(s);
    ssl_clear_hash_ctx(&s->read_hash);
    ssl_clear_hash_ctx(&s->write_hash);
}
2473

2474
void SSL_set_connect_state(SSL *s)
2475 2476 2477 2478 2479 2480 2481 2482 2483 2484
{
    s->server = 0;
    s->shutdown = 0;
    s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
    s->handshake_func = s->method->ssl_connect;
    /* clear the current cipher */
    ssl_clear_cipher_ctx(s);
    ssl_clear_hash_ctx(&s->read_hash);
    ssl_clear_hash_ctx(&s->write_hash);
}
2485

2486
int ssl_undefined_function(SSL *s)
2487 2488 2489 2490
{
    SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2491

2492
int ssl_undefined_void_function(void)
2493 2494 2495 2496 2497
{
    SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2498

B
Ben Laurie 已提交
2499
int ssl_undefined_const_function(const SSL *s)
2500 2501 2502 2503 2504
{
    SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
B
Ben Laurie 已提交
2505

2506
SSL_METHOD *ssl_bad_method(int ver)
2507 2508 2509 2510
{
    SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (NULL);
}
2511

B
Ben Laurie 已提交
2512
const char *SSL_get_version(const SSL *s)
2513 2514 2515 2516 2517 2518 2519 2520 2521
{
    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
2522 2523 2524 2525 2526 2527
    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");
2528 2529 2530
    else
        return ("unknown");
}
2531

2532
SSL *SSL_dup(SSL *s)
2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547
{
    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->type = s->type;
    ret->method = s->method;

    if (s->session != NULL) {
        /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
V
Viktor Dukhovni 已提交
2548
        if (!SSL_copy_session_id(ret, s))
M
Matt Caswell 已提交
2549
            goto err;
2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562
    } 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
2563
            ssl_cert_free(ret->cert);
2564 2565 2566 2567 2568
            ret->cert = ssl_cert_dup(s->cert);
            if (ret->cert == NULL)
                goto err;
        }

V
Viktor Dukhovni 已提交
2569
        if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
M
Matt Caswell 已提交
2570
            goto err;
2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 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
    }

    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->in_handshake = s->in_handshake;
    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;
    ret->state = s->state;      /* SSL_dup does not really work at any state,
                                 * though */
2613
    RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643
    ret->init_num = 0;          /* would have to copy ret->init_buf,
                                 * ret->init_msg, ret->init_num,
                                 * ret->init_off */
    ret->hit = s->hit;

    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
2644
    return ret;
2645 2646

 err:
R
Rich Salz 已提交
2647 2648
    SSL_free(ret);
    return NULL;
2649
}
2650

2651
void ssl_clear_cipher_ctx(SSL *s)
2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662
{
    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;
    }
2663
#ifndef OPENSSL_NO_COMP
R
Rich Salz 已提交
2664 2665 2666 2667
    COMP_CTX_free(s->expand);
    s->expand = NULL;
    COMP_CTX_free(s->compress);
    s->compress = NULL;
2668 2669
#endif
}
2670

B
Ben Laurie 已提交
2671
X509 *SSL_get_certificate(const SSL *s)
2672 2673 2674 2675 2676 2677
{
    if (s->cert != NULL)
        return (s->cert->key->x509);
    else
        return (NULL);
}
2678

2679
EVP_PKEY *SSL_get_privatekey(const SSL *s)
2680 2681 2682 2683 2684 2685
{
    if (s->cert != NULL)
        return (s->cert->key->privatekey);
    else
        return (NULL);
}
2686

2687
X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2688 2689 2690 2691 2692 2693
{
    if (ctx->cert != NULL)
        return ctx->cert->key->x509;
    else
        return NULL;
}
2694 2695

EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2696 2697 2698 2699 2700 2701
{
    if (ctx->cert != NULL)
        return ctx->cert->key->privatekey;
    else
        return NULL;
}
2702

2703
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2704 2705 2706 2707 2708 2709
{
    if ((s->session != NULL) && (s->session->cipher != NULL))
        return (s->session->cipher);
    return (NULL);
}

2710
const COMP_METHOD *SSL_get_current_compression(SSL *s)
2711
{
R
Rich Salz 已提交
2712 2713 2714 2715 2716
#ifndef OPENSSL_NO_COMP
    return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
#else
    return NULL;
#endif
2717
}
2718 2719

const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2720
{
R
Rich Salz 已提交
2721 2722 2723 2724
#ifndef OPENSSL_NO_COMP
    return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
#else
    return NULL;
2725
#endif
R
Rich Salz 已提交
2726
}
2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756

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);
}
2757

2758
void ssl_free_wbio_buffer(SSL *s)
2759
{
R
Rich Salz 已提交
2760
    /* callers ensure s is never null */
2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779
    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;
}
2780

B
Ben Laurie 已提交
2781
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2782 2783 2784
{
    return (ctx->quiet_shutdown);
}
2785

2786 2787 2788 2789
void SSL_set_quiet_shutdown(SSL *s, int mode)
{
    s->quiet_shutdown = mode;
}
2790

B
Ben Laurie 已提交
2791
int SSL_get_quiet_shutdown(const SSL *s)
2792 2793 2794
{
    return (s->quiet_shutdown);
}
2795

2796 2797 2798 2799
void SSL_set_shutdown(SSL *s, int mode)
{
    s->shutdown = mode;
}
2800

B
Ben Laurie 已提交
2801
int SSL_get_shutdown(const SSL *s)
2802 2803 2804
{
    return (s->shutdown);
}
2805

B
Ben Laurie 已提交
2806
int SSL_version(const SSL *s)
2807 2808 2809
{
    return (s->version);
}
2810

B
Ben Laurie 已提交
2811
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2812 2813 2814 2815 2816 2817
{
    return (ssl->ctx);
}

SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
{
K
Kurt Roeckx 已提交
2818
    CERT *new_cert;
2819 2820
    if (ssl->ctx == ctx)
        return ssl->ctx;
2821
#ifndef OPENSSL_NO_TLSEXT
2822 2823 2824
    if (ctx == NULL)
        ctx = ssl->initial_ctx;
#endif
K
Kurt Roeckx 已提交
2825 2826 2827
    new_cert = ssl_cert_dup(ctx->cert);
    if (new_cert == NULL) {
        return NULL;
2828
    }
K
Kurt Roeckx 已提交
2829 2830
    ssl_cert_free(ssl->cert);
    ssl->cert = new_cert;
2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851

    /*
     * 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
2852
    SSL_CTX_free(ssl->ctx); /* decrement reference count */
2853 2854 2855 2856
    ssl->ctx = ctx;

    return (ssl->ctx);
}
2857

2858
#ifndef OPENSSL_NO_STDIO
2859
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2860 2861 2862
{
    return (X509_STORE_set_default_paths(ctx->cert_store));
}
2863

2864
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2865 2866 2867 2868
                                  const char *CApath)
{
    return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
}
2869
#endif
2870

B
Ben Laurie 已提交
2871
void SSL_set_info_callback(SSL *ssl,
2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885
                           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;
}
2886

B
Ben Laurie 已提交
2887
int SSL_state(const SSL *ssl)
2888 2889 2890
{
    return (ssl->state);
}
2891

2892
void SSL_set_state(SSL *ssl, int state)
2893 2894 2895
{
    ssl->state = state;
}
2896

2897 2898 2899 2900
void SSL_set_verify_result(SSL *ssl, long arg)
{
    ssl->verify_result = arg;
}
2901

B
Ben Laurie 已提交
2902
long SSL_get_verify_result(const SSL *ssl)
2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940
{
    return (ssl->verify_result);
}

int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
                         CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
                                   new_func, dup_func, free_func);
}

int SSL_set_ex_data(SSL *s, int idx, void *arg)
{
    return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
}

void *SSL_get_ex_data(const SSL *s, int idx)
{
    return (CRYPTO_get_ex_data(&s->ex_data, idx));
}

int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
                             CRYPTO_EX_dup *dup_func,
                             CRYPTO_EX_free *free_func)
{
    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
                                   new_func, dup_func, free_func);
}

int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
{
    return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
}

void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
{
    return (CRYPTO_get_ex_data(&s->ex_data, idx));
}
2941

2942
int ssl_ok(SSL *s)
2943 2944 2945
{
    return (1);
}
2946

B
Ben Laurie 已提交
2947
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2948 2949 2950
{
    return (ctx->cert_store);
}
2951

2952 2953
void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
{
R
Rich Salz 已提交
2954
    X509_STORE_free(ctx->cert_store);
2955 2956
    ctx->cert_store = store;
}
2957

B
Ben Laurie 已提交
2958
int SSL_want(const SSL *s)
2959 2960 2961
{
    return (s->rwstate);
}
2962

2963
/**
2964 2965 2966 2967 2968
 * \brief Set the callback for generating temporary RSA keys.
 * \param ctx the SSL context.
 * \param cb the callback
 */

2969
#ifndef OPENSSL_NO_RSA
2970 2971 2972 2973 2974 2975
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
                                                            int is_export,
                                                            int keylength))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
}
2976

2977 2978 2979 2980 2981 2982
void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
                                                    int is_export,
                                                    int keylength))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
}
2983
#endif
2984

2985
#ifdef DOXYGEN
2986
/**
2987 2988
 * \brief The RSA temporary key callback function.
 * \param ssl the SSL session.
U
Ulf Möller 已提交
2989 2990 2991
 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
 * of the required key in bits.
2992 2993 2994 2995
 * \return the temporary RSA key.
 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
 */

2996 2997 2998
RSA *cb(SSL *ssl, int is_export, int keylength)
{
}
2999 3000
#endif

3001
/**
3002 3003 3004 3005 3006
 * \brief Set the callback for generating temporary DH keys.
 * \param ctx the SSL context.
 * \param dh the callback
 */

3007
#ifndef OPENSSL_NO_DH
3008 3009 3010 3011 3012 3013
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);
}
3014

3015 3016 3017 3018 3019
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);
}
3020
#endif
3021

3022
#ifndef OPENSSL_NO_EC
3023 3024 3025 3026 3027 3028 3029
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
                                   EC_KEY *(*ecdh) (SSL *ssl, int is_export,
                                                    int keylength))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
                          (void (*)(void))ecdh);
}
B
Bodo Möller 已提交
3030

3031 3032 3033 3034 3035 3036
void SSL_set_tmp_ecdh_callback(SSL *ssl,
                               EC_KEY *(*ecdh) (SSL *ssl, int is_export,
                                                int keylength))
{
    SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
}
B
Bodo Möller 已提交
3037 3038
#endif

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;
    }
R
Rich Salz 已提交
3047
    OPENSSL_free(ctx->psk_identity_hint);
3048 3049 3050 3051 3052 3053 3054 3055
    if (identity_hint != NULL) {
        ctx->psk_identity_hint = BUF_strdup(identity_hint);
        if (ctx->psk_identity_hint == NULL)
            return 0;
    } else
        ctx->psk_identity_hint = NULL;
    return 1;
}
3056 3057

int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068
{
    if (s == NULL)
        return 0;

    if (s->session == NULL)
        return 1;               /* session not created yet, ignored */

    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;
    }
R
Rich Salz 已提交
3069
    OPENSSL_free(s->session->psk_identity_hint);
3070 3071 3072 3073 3074 3075 3076 3077
    if (identity_hint != NULL) {
        s->session->psk_identity_hint = BUF_strdup(identity_hint);
        if (s->session->psk_identity_hint == NULL)
            return 0;
    } else
        s->session->psk_identity_hint = NULL;
    return 1;
}
3078 3079

const char *SSL_get_psk_identity_hint(const SSL *s)
3080 3081 3082 3083 3084
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity_hint);
}
3085 3086

const char *SSL_get_psk_identity(const SSL *s)
3087 3088 3089 3090 3091
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity);
}
N
Nils Larsch 已提交
3092

3093
void SSL_set_psk_client_callback(SSL *s,
3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104
                                 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
3105 3106

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117
                                     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
3118

3119
void SSL_set_psk_server_callback(SSL *s,
3120 3121 3122 3123 3124 3125 3126 3127
                                 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
3128 3129

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154
                                     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);
}
3155

3156
void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3157 3158 3159 3160 3161 3162 3163 3164
                                                int (*cb) (SSL *ssl,
                                                           int
                                                           is_forward_secure))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                          (void (*)(void))cb);
}

3165
void SSL_set_not_resumable_session_callback(SSL *ssl,
3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177
                                            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
3178
 */
3179

3180
EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3181
{
3182 3183 3184 3185 3186
    ssl_clear_hash_ctx(hash);
    *hash = EVP_MD_CTX_create();
    if (md)
        EVP_DigestInit_ex(*hash, md, NULL);
    return *hash;
3187
}
3188 3189

void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3190 3191
{

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

3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225
/* Retrieve handshake hashes */
int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
{
    unsigned char *p = out;
    int idx, ret = 0;
    long mask;
    EVP_MD_CTX ctx;
    const EVP_MD *md;
    EVP_MD_CTX_init(&ctx);
    for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
        if (mask & ssl_get_algorithm2(s)) {
            int hashsize = EVP_MD_size(md);
            EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
            if (!hdgst || hashsize < 0 || hashsize > outlen)
                goto err;
            if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
                goto err;
            if (!EVP_DigestFinal_ex(&ctx, p, NULL))
                goto err;
            p += hashsize;
            outlen -= hashsize;
        }
    }
    ret = p - out;
 err:
    EVP_MD_CTX_cleanup(&ctx);
    return ret;
}

3226
void SSL_set_debug(SSL *s, int debug)
3227 3228 3229
{
    s->debug = debug;
}
3230 3231

int SSL_cache_hit(SSL *s)
3232 3233 3234
{
    return s->hit;
}
3235

3236
int SSL_is_server(SSL *s)
3237 3238 3239
{
    return s->server;
}
3240

D
Dr. Stephen Henson 已提交
3241
void SSL_set_security_level(SSL *s, int level)
3242 3243 3244
{
    s->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3245 3246

int SSL_get_security_level(const SSL *s)
3247 3248 3249
{
    return s->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3250

3251 3252 3253 3254 3255 3256 3257
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
3258

3259 3260 3261 3262 3263
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
3264 3265

void SSL_set0_security_ex_data(SSL *s, void *ex)
3266 3267 3268
{
    s->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3269 3270

void *SSL_get0_security_ex_data(const SSL *s)
3271 3272 3273
{
    return s->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3274 3275

void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3276 3277 3278
{
    ctx->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3279 3280

int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3281 3282 3283
{
    return ctx->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3284

3285 3286 3287 3288 3289 3290 3291
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
3292

3293 3294 3295 3296 3297 3298 3299 3300
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
3301 3302

void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3303 3304 3305
{
    ctx->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3306 3307

void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3308 3309 3310
{
    return ctx->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3311

3312
IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);