ssl_lib.c 95.7 KB
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/*
 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
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 */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
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 *
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 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
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 *
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 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
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 *
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
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 *
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 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
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/* ====================================================================
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 * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
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 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
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/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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 * ECC cipher suite support in OpenSSL originally developed by
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 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */
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/* ====================================================================
 * Copyright 2005 Nokia. All rights reserved.
 *
 * The portions of the attached software ("Contribution") is developed by
 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 * license.
 *
 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 * support (see RFC 4279) to OpenSSL.
 *
 * No patent licenses or other rights except those expressly stated in
 * the OpenSSL open source license shall be deemed granted or received
 * expressly, by implication, estoppel, or otherwise.
 *
 * No assurances are provided by Nokia that the Contribution does not
 * infringe the patent or other intellectual property rights of any third
 * party or that the license provides you with all the necessary rights
 * to make use of the Contribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 * OTHERWISE.
 */
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#ifdef REF_CHECK
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# include <assert.h>
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#endif
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#include <stdio.h>
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#include "ssl_locl.h"
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#include <openssl/objects.h>
#include <openssl/lhash.h>
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#include <openssl/x509v3.h>
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#include <openssl/rand.h>
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#include <openssl/ocsp.h>
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#ifndef OPENSSL_NO_DH
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# include <openssl/dh.h>
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#endif
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#ifndef OPENSSL_NO_ENGINE
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# include <openssl/engine.h>
#endif

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;
    s->tlsext_debug_cb = 0;
    s->tlsext_debug_arg = NULL;
    s->tlsext_ticket_expected = 0;
    s->tlsext_status_type = -1;
    s->tlsext_status_expected = 0;
    s->tlsext_ocsp_ids = NULL;
    s->tlsext_ocsp_exts = NULL;
    s->tlsext_ocsp_resp = NULL;
    s->tlsext_ocsp_resplen = -1;
    CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
    s->initial_ctx = ctx;
# ifndef OPENSSL_NO_EC
    if (ctx->tlsext_ecpointformatlist) {
        s->tlsext_ecpointformatlist =
            BUF_memdup(ctx->tlsext_ecpointformatlist,
                       ctx->tlsext_ecpointformatlist_length);
        if (!s->tlsext_ecpointformatlist)
            goto err;
        s->tlsext_ecpointformatlist_length =
            ctx->tlsext_ecpointformatlist_length;
    }
    if (ctx->tlsext_ellipticcurvelist) {
        s->tlsext_ellipticcurvelist =
            BUF_memdup(ctx->tlsext_ellipticcurvelist,
                       ctx->tlsext_ellipticcurvelist_length);
        if (!s->tlsext_ellipticcurvelist)
            goto err;
        s->tlsext_ellipticcurvelist_length =
            ctx->tlsext_ellipticcurvelist_length;
    }
# endif
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# ifndef OPENSSL_NO_NEXTPROTONEG
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    s->next_proto_negotiated = NULL;
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# endif
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    if (s->ctx->alpn_client_proto_list) {
        s->alpn_client_proto_list =
            OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
        if (s->alpn_client_proto_list == NULL)
            goto err;
        memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
               s->ctx->alpn_client_proto_list_len);
        s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
    }
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    s->verify_result = X509_V_OK;
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    s->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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    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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    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);
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    SSL_CTX_free(s->ctx);
D
Dr. Stephen Henson 已提交
577

578
#if !defined(OPENSSL_NO_NEXTPROTONEG)
R
Rich Salz 已提交
579
    OPENSSL_free(s->next_proto_negotiated);
B
Ben Laurie 已提交
580 581
#endif

P
Piotr Sikora 已提交
582
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
583
    sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
584 585 586 587 588
#endif

    OPENSSL_free(s);
}

589 590
void SSL_set_rbio(SSL *s, BIO *rbio)
{
R
Rich Salz 已提交
591
    if (s->rbio != rbio)
592 593 594 595 596
        BIO_free_all(s->rbio);
    s->rbio = rbio;
}

void SSL_set_wbio(SSL *s, BIO *wbio)
597 598 599 600 601 602 603 604 605 606
{
    /*
     * 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
607
    if (s->wbio != wbio && s->rbio != s->wbio)
608 609 610
        BIO_free_all(s->wbio);
    s->wbio = wbio;
}
611

612 613 614 615 616 617
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
618
BIO *SSL_get_rbio(const SSL *s)
619 620 621
{
    return (s->rbio);
}
622

B
Ben Laurie 已提交
623
BIO *SSL_get_wbio(const SSL *s)
624 625 626
{
    return (s->wbio);
}
627

B
Ben Laurie 已提交
628
int SSL_get_fd(const SSL *s)
629 630 631
{
    return (SSL_get_rfd(s));
}
632

B
Ben Laurie 已提交
633
int SSL_get_rfd(const SSL *s)
634 635 636 637 638 639 640 641 642 643
{
    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);
}
644

B
Ben Laurie 已提交
645
int SSL_get_wfd(const SSL *s)
646 647 648 649 650 651 652 653 654 655
{
    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);
}
656

657
#ifndef OPENSSL_NO_SOCK
658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674
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);
}
675

676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719
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
720 721

/* return length of latest Finished message we sent, copy to 'buf' */
B
Ben Laurie 已提交
722
size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
723 724 725 726 727 728 729 730 731 732 733
{
    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;
}
734 735

/* return length of latest Finished message we expected, copy to 'buf' */
B
Ben Laurie 已提交
736
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
737 738
{
    size_t ret = 0;
739

740 741 742 743 744 745 746 747
    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;
}
748

B
Ben Laurie 已提交
749
int SSL_get_verify_mode(const SSL *s)
750 751 752
{
    return (s->verify_mode);
}
753

B
Ben Laurie 已提交
754
int SSL_get_verify_depth(const SSL *s)
755 756 757
{
    return X509_VERIFY_PARAM_get_depth(s->param);
}
758

759 760 761
int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
    return (s->verify_callback);
}
762

B
Ben Laurie 已提交
763
int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
764 765 766
{
    return (ctx->verify_mode);
}
767

B
Ben Laurie 已提交
768
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791
{
    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)
{
792
    RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
793
}
794

B
Ben Laurie 已提交
795
int SSL_get_read_ahead(const SSL *s)
796
{
797
    return RECORD_LAYER_get_read_ahead(&s->rlayer);
798
}
799

B
Ben Laurie 已提交
800
int SSL_pending(const SSL *s)
801 802 803 804 805 806 807 808 809 810
{
    /*
     * 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));
}
811

B
Ben Laurie 已提交
812
X509 *SSL_get_peer_certificate(const SSL *s)
813 814
{
    X509 *r;
815

816 817 818 819
    if ((s == NULL) || (s->session == NULL))
        r = NULL;
    else
        r = s->session->peer;
820

821 822
    if (r == NULL)
        return (r);
823

824 825 826 827
    CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);

    return (r);
}
828

B
Ben Laurie 已提交
829
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850
{
    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
851
int SSL_copy_session_id(SSL *t, const SSL *f)
852 853
{
    /* Do we need to to SSL locking? */
V
Viktor Dukhovni 已提交
854
    if (!SSL_set_session(t, SSL_get_session(f))) {
M
Matt Caswell 已提交
855
        return 0;
M
Matt Caswell 已提交
856
    }
857 858 859 860 861 862 863 864 865 866

    /*
     * 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
867 868 869
    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
870
    if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
M
Matt Caswell 已提交
871
        return 0;
M
Matt Caswell 已提交
872
    }
M
Matt Caswell 已提交
873 874

    return 1;
875
}
876

877
/* Fix this so it checks all the valid key/cert options */
B
Ben Laurie 已提交
878
int SSL_CTX_check_private_key(const SSL_CTX *ctx)
879 880
{
    if ((ctx == NULL) ||
K
Kurt Roeckx 已提交
881
        (ctx->cert->key->x509 == NULL)) {
882 883 884 885 886 887 888 889 890 891 892 893
        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));
}
894

895
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
896
int SSL_check_private_key(const SSL *ssl)
897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912
{
    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));
}
913

914
int SSL_accept(SSL *s)
915 916 917 918
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_accept_state(s);
919

920 921
    return (s->method->ssl_accept(s));
}
922

923
int SSL_connect(SSL *s)
924 925 926 927
{
    if (s->handshake_func == 0)
        /* Not properly initialized yet */
        SSL_set_connect_state(s);
928

929 930
    return (s->method->ssl_connect(s));
}
931

B
Ben Laurie 已提交
932
long SSL_get_default_timeout(const SSL *s)
933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977
{
    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));
}
978

979
int SSL_shutdown(SSL *s)
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
{
    /*
     * 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);
}
998

999
int SSL_renegotiate(SSL *s)
1000 1001 1002
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
D
Dr. Stephen Henson 已提交
1003

1004
    s->new_session = 1;
D
Dr. Stephen Henson 已提交
1005

1006 1007
    return (s->method->ssl_renegotiate(s));
}
1008

D
Dr. Stephen Henson 已提交
1009
int SSL_renegotiate_abbreviated(SSL *s)
1010 1011 1012
{
    if (s->renegotiate == 0)
        s->renegotiate = 1;
B
Bodo Möller 已提交
1013

1014
    s->new_session = 0;
B
Bodo Möller 已提交
1015

1016 1017
    return (s->method->ssl_renegotiate(s));
}
D
Dr. Stephen Henson 已提交
1018

1019
int SSL_renegotiate_pending(SSL *s)
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
{
    /*
     * 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:
1034
        return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1035
    case SSL_CTRL_SET_READ_AHEAD:
1036 1037
        l = RECORD_LAYER_get_read_ahead(&s->rlayer);
        RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074
        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
1075
            if (s->s3->tmp.ciphers_raw == NULL)
1076
                return 0;
D
Dr. Stephen Henson 已提交
1077 1078
            *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
            return (int)s->s3->tmp.ciphers_rawlen;
1079 1080
        } else
            return ssl_put_cipher_by_char(s, NULL, NULL);
1081
    case SSL_CTRL_GET_EXTMS_SUPPORT:
1082 1083 1084
        if (!s->session || SSL_in_init(s) || s->in_handshake)
		return -1;
	if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1085 1086 1087
            return 1;
        else
            return 0;
1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
    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));
    }
}
1107

B
Ben Laurie 已提交
1108
LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
{
    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) {
1119
#ifndef OPENSSL_NO_EC
1120 1121 1122 1123 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
        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));
    }
}
1223

1224
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245
{
    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);
}
1246

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

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

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

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

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

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

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

    sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
                                &ctx->cipher_list_by_id, str, ctx->cert);
    /*
     * ssl_create_cipher_list may return an empty stack if it was unable to
     * find a cipher matching the given rule string (for example if the rule
     * string specifies a cipher which has been disabled). This is not an
     * error as far as ssl_create_cipher_list is concerned, and hence
     * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
     */
    if (sk == NULL)
        return 0;
    else if (sk_SSL_CIPHER_num(sk) == 0) {
        SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
        return 0;
    }
    return 1;
}
1345

1346
/** specify the ciphers to be used by the SSL */
1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361
int SSL_set_cipher_list(SSL *s, const char *str)
{
    STACK_OF(SSL_CIPHER) *sk;

    sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
                                &s->cipher_list_by_id, str, s->cert);
    /* see comment in SSL_CTX_set_cipher_list */
    if (sk == NULL)
        return 0;
    else if (sk_SSL_CIPHER_num(sk) == 0) {
        SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
        return 0;
    }
    return 1;
}
1362 1363

/* works well for SSLv2, not so good for SSLv3 */
1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
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);
}

1400
/** return a servername extension value if provided in Client Hello, or NULL.
1401
 * So far, only host_name types are defined (RFC 3546).
1402 1403
 */

1404
const char *SSL_get_servername(const SSL *s, const int type)
1405 1406 1407
{
    if (type != TLSEXT_NAMETYPE_host_name)
        return NULL;
B
Bodo Möller 已提交
1408

1409 1410 1411
    return s->session && !s->tlsext_hostname ?
        s->session->tlsext_hostname : s->tlsext_hostname;
}
1412

1413
int SSL_get_servername_type(const SSL *s)
1414 1415 1416 1417 1418 1419 1420
{
    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
1421

1422 1423
/*
 * SSL_select_next_proto implements the standard protocol selection. It is
B
Ben Laurie 已提交
1424
 * expected that this function is called from the callback set by
1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440
 * 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
1441
 */
1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479
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
1480

1481
#ifndef OPENSSL_NO_NEXTPROTONEG
1482 1483 1484 1485 1486 1487
/*
 * 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
1488 1489
 * provided by the callback.
 */
1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523
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
1524 1525
 * 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|).
1526 1527 1528 1529 1530
 * 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
1531
 */
1532 1533 1534 1535 1536 1537 1538 1539 1540 1541
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;
}
1542
#endif
1543

1544 1545
/*
 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
A
Adam Langley 已提交
1546
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1547 1548 1549 1550 1551
 * 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
1552
    OPENSSL_free(ctx->alpn_client_proto_list);
1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
    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
1564
 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1565 1566 1567 1568 1569
 * 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
1570
    OPENSSL_free(ssl->alpn_client_proto_list);
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 1601 1602
    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
1603
void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614
                            unsigned *len)
{
    *data = NULL;
    if (ssl->s3)
        *data = ssl->s3->alpn_selected;
    if (*data == NULL)
        *len = 0;
    else
        *len = ssl->s3->alpn_selected_len;
}

1615

1616
int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1617 1618 1619 1620 1621 1622
                               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
1623

1624 1625 1626 1627
    return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
                                                       llen, p, plen,
                                                       use_context);
}
B
Ben Laurie 已提交
1628

B
Ben Laurie 已提交
1629
static unsigned long ssl_session_hash(const SSL_SESSION *a)
1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642
{
    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
1643
 * coarser function than this one) is changed, ensure
1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
 * 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
1659
 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1660 1661 1662
 * variable. The reason is that the functions aren't static, they're exposed
 * via ssl.h.
 */
B
Ben Laurie 已提交
1663 1664
static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1665

1666
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683
{
    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
1684
    ret = OPENSSL_malloc(sizeof(*ret));
1685 1686 1687
    if (ret == NULL)
        goto err;

1688
    memset(ret, 0, sizeof(*ret));
1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705

    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;

1706
    memset(&ret->stats, 0, sizeof(ret->stats));
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 1735

    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
1736
    if (!ssl_create_cipher_list(ret->method,
1737
                           &ret->cipher_list, &ret->cipher_list_by_id,
M
Matt Caswell 已提交
1738 1739
                           SSL_DEFAULT_CIPHER_LIST, ret->cert)
       || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
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 1767
        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;
1768

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

1780
#ifndef OPENSSL_NO_NEXTPROTONEG
1781 1782
    ret->next_protos_advertised_cb = 0;
    ret->next_proto_select_cb = 0;
1783 1784
#endif
#ifndef OPENSSL_NO_PSK
1785 1786 1787
    ret->psk_identity_hint = NULL;
    ret->psk_client_callback = NULL;
    ret->psk_server_callback = NULL;
B
Ben Laurie 已提交
1788
#endif
B
Ben Laurie 已提交
1789
#ifndef OPENSSL_NO_SRP
V
Viktor Dukhovni 已提交
1790
    if (!SSL_CTX_SRP_CTX_init(ret))
M
Matt Caswell 已提交
1791
        goto err;
B
Ben Laurie 已提交
1792
#endif
1793
#ifndef OPENSSL_NO_ENGINE
1794 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
    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
1822
    SSL_CTX_free(ret);
1823 1824
    return (NULL);
}
1825

1826
void SSL_CTX_free(SSL_CTX *a)
1827 1828
{
    int i;
1829

1830 1831
    if (a == NULL)
        return;
1832

1833
    i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1834
#ifdef REF_PRINT
1835
    REF_PRINT("SSL_CTX", a);
1836
#endif
1837 1838
    if (i > 0)
        return;
1839
#ifdef REF_CHECK
1840 1841 1842 1843 1844 1845
    if (i < 0) {
        fprintf(stderr, "SSL_CTX_free, bad reference count\n");
        abort();                /* ok */
    }
#endif

R
Rich Salz 已提交
1846
    X509_VERIFY_PARAM_free(a->param);
1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860

    /*
     * 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
1861
    lh_SSL_SESSION_free(a->sessions);
R
Rich Salz 已提交
1862
    X509_STORE_free(a->cert_store);
R
Rich Salz 已提交
1863 1864
    sk_SSL_CIPHER_free(a->cipher_list);
    sk_SSL_CIPHER_free(a->cipher_list_by_id);
R
Rich Salz 已提交
1865
    ssl_cert_free(a->cert);
R
Rich Salz 已提交
1866 1867
    sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
    sk_X509_pop_free(a->extra_certs, X509_free);
1868
    a->comp_methods = NULL;
P
Piotr Sikora 已提交
1869
#ifndef OPENSSL_NO_SRTP
R
Rich Salz 已提交
1870
    sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
P
Piotr Sikora 已提交
1871
#endif
1872
#ifndef OPENSSL_NO_PSK
R
Rich Salz 已提交
1873
    OPENSSL_free(a->psk_identity_hint);
1874
#endif
B
Ben Laurie 已提交
1875
#ifndef OPENSSL_NO_SRP
1876
    SSL_CTX_SRP_CTX_free(a);
B
Ben Laurie 已提交
1877
#endif
1878
#ifndef OPENSSL_NO_ENGINE
1879 1880
    if (a->client_cert_engine)
        ENGINE_finish(a->client_cert_engine);
1881
#endif
B
Ben Laurie 已提交
1882

1883
#ifndef OPENSSL_NO_EC
R
Rich Salz 已提交
1884 1885
    OPENSSL_free(a->tlsext_ecpointformatlist);
    OPENSSL_free(a->tlsext_ellipticcurvelist);
B
Ben Laurie 已提交
1886
#endif
1887
    OPENSSL_free(a->alpn_client_proto_list);
B
Ben Laurie 已提交
1888

1889 1890
    OPENSSL_free(a);
}
1891

1892
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1893 1894 1895 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
{
    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);
}
1932

1933
void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
1934 1935
{
    CERT_PKEY *cpk;
1936 1937
    CERT *c = s->cert;
    int *pvalid = s->s3->tmp.valid_flags;
1938 1939 1940 1941
    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;
1942
#ifndef OPENSSL_NO_EC
1943 1944 1945 1946 1947
    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;
1948
#endif
1949 1950
    if (c == NULL)
        return;
1951

1952
    kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1953

1954
#ifndef OPENSSL_NO_RSA
1955 1956 1957
    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));
1958
#else
1959
    rsa_tmp = rsa_tmp_export = 0;
1960
#endif
1961
#ifndef OPENSSL_NO_DH
1962 1963 1964 1965
    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));
1966
#else
1967
    dh_tmp = dh_tmp_export = 0;
1968 1969
#endif

1970
#ifndef OPENSSL_NO_EC
1971 1972 1973
    have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
#endif
    cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
1974
    rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
1975 1976
    rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1977
    rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
1978
    cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1979
    dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
1980
    cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
1981
    dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
1982 1983
    dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
1984
    dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
1985 1986
    dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
    cpk = &(c->pkeys[SSL_PKEY_ECC]);
1987
#ifndef OPENSSL_NO_EC
1988
    have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
1989
#endif
1990 1991 1992 1993
    mask_k = 0;
    mask_a = 0;
    emask_k = 0;
    emask_a = 0;
1994

1995
#ifdef CIPHER_DEBUG
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
    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;
2017

2018 2019
    if (dh_tmp_export)
        emask_k |= SSL_kDHE;
2020

2021 2022
    if (dh_tmp)
        mask_k |= SSL_kDHE;
2023

2024 2025 2026 2027
    if (dh_rsa)
        mask_k |= SSL_kDHr;
    if (dh_rsa_export)
        emask_k |= SSL_kDHr;
2028

2029 2030 2031 2032
    if (dh_dsa)
        mask_k |= SSL_kDHd;
    if (dh_dsa_export)
        emask_k |= SSL_kDHd;
2033

2034
    if (mask_k & (SSL_kDHr | SSL_kDHd))
2035
        mask_a |= SSL_aDH;
2036

2037 2038 2039 2040
    if (rsa_enc || rsa_sign) {
        mask_a |= SSL_aRSA;
        emask_a |= SSL_aRSA;
    }
2041

2042 2043 2044 2045
    if (dsa_sign) {
        mask_a |= SSL_aDSS;
        emask_a |= SSL_aDSS;
    }
2046

2047 2048
    mask_a |= SSL_aNULL;
    emask_a |= SSL_aNULL;
2049

2050 2051 2052 2053
    /*
     * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
     * depending on the key usage extension.
     */
2054
#ifndef OPENSSL_NO_EC
2055 2056 2057 2058 2059 2060 2061 2062 2063
    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;
2064
        if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
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
            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;
        }
    }
2098
#endif
B
Bodo Möller 已提交
2099

2100
#ifndef OPENSSL_NO_EC
2101 2102 2103 2104
    if (have_ecdh_tmp) {
        mask_k |= SSL_kECDHE;
        emask_k |= SSL_kECDHE;
    }
B
Bodo Möller 已提交
2105
#endif
2106 2107

#ifndef OPENSSL_NO_PSK
2108 2109 2110 2111
    mask_k |= SSL_kPSK;
    mask_a |= SSL_aPSK;
    emask_k |= SSL_kPSK;
    emask_a |= SSL_aPSK;
2112 2113
#endif

2114 2115 2116 2117
    s->s3->tmp.mask_k = mask_k;
    s->s3->tmp.mask_a = mask_a;
    s->s3->tmp.export_mask_k = emask_k;
    s->s3->tmp.export_mask_a = emask_a;
2118
}
2119

B
Bodo Möller 已提交
2120 2121
/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
#define ku_reject(x, usage) \
2122
        (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
B
Bodo Möller 已提交
2123

2124 2125
#ifndef OPENSSL_NO_EC

2126
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2127 2128 2129 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
{
    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
2190

2191 2192
#endif

2193
static int ssl_get_server_cert_index(const SSL *s)
2194 2195 2196 2197 2198 2199 2200 2201 2202
{
    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
2203

2204
CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2205 2206 2207
{
    CERT *c;
    int i;
B
Bodo Möller 已提交
2208

2209 2210 2211
    c = s->cert;
    if (!s->s3 || !s->s3->tmp.new_cipher)
        return NULL;
2212
    ssl_set_masks(s, s->s3->tmp.new_cipher);
B
Ben Laurie 已提交
2213

2214
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2215 2216 2217 2218 2219 2220
    /*
     * 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;
2221 2222
#endif

2223
    i = ssl_get_server_cert_index(s);
B
Ben Laurie 已提交
2224

2225 2226 2227
    /* This may or may not be an error. */
    if (i < 0)
        return NULL;
B
Ben Laurie 已提交
2228

2229 2230 2231
    /* May be NULL. */
    return &c->pkeys[i];
}
2232

2233 2234 2235 2236 2237 2238
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;
2239

2240 2241
    alg_a = cipher->algorithm_auth;
    c = s->cert;
2242

2243
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268
    /*
     * 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)
2269
        *pmd = s->s3->tmp.md[idx];
2270 2271
    return c->pkeys[idx].privatekey;
}
2272

2273
int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2274 2275 2276 2277 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
                                   size_t *serverinfo_length)
{
    CERT *c = NULL;
    int i = 0;
    *serverinfo_length = 0;

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

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

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

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

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

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

    /* auto flush every 255 connections */
    if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
        if ((((mode & SSL_SESS_CACHE_CLIENT)
              ? s->session_ctx->stats.sess_connect_good
              : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
            SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
        }
    }
}
2323

2324
const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2325 2326 2327
{
    return ctx->method;
}
2328

2329
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2330 2331 2332
{
    return (s->method);
}
2333

2334
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 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
{
    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);
}
2435

2436
int SSL_do_handshake(SSL *s)
2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456
{
    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
 */
2457
void SSL_set_accept_state(SSL *s)
2458 2459 2460 2461 2462 2463 2464 2465 2466 2467
{
    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);
}
2468

2469
void SSL_set_connect_state(SSL *s)
2470 2471 2472 2473 2474 2475 2476 2477 2478 2479
{
    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);
}
2480

2481
int ssl_undefined_function(SSL *s)
2482 2483 2484 2485
{
    SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2486

2487
int ssl_undefined_void_function(void)
2488 2489 2490 2491 2492
{
    SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
2493

B
Ben Laurie 已提交
2494
int ssl_undefined_const_function(const SSL *s)
2495 2496 2497 2498 2499
{
    SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
           ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (0);
}
B
Ben Laurie 已提交
2500

2501
SSL_METHOD *ssl_bad_method(int ver)
2502 2503 2504 2505
{
    SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
    return (NULL);
}
2506

B
Ben Laurie 已提交
2507
const char *SSL_get_version(const SSL *s)
2508 2509 2510 2511 2512 2513 2514 2515 2516
{
    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
2517 2518 2519 2520 2521 2522
    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");
2523 2524 2525
    else
        return ("unknown");
}
2526

2527
SSL *SSL_dup(SSL *s)
2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542
{
    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
2543
        if (!SSL_copy_session_id(ret, s))
M
Matt Caswell 已提交
2544
            goto err;
2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557
    } 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
2558
            ssl_cert_free(ret->cert);
2559 2560 2561 2562 2563
            ret->cert = ssl_cert_dup(s->cert);
            if (ret->cert == NULL)
                goto err;
        }

V
Viktor Dukhovni 已提交
2564
        if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
M
Matt Caswell 已提交
2565
            goto err;
2566 2567 2568 2569 2570 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
    }

    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 */
2608
    RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2609 2610 2611 2612 2613 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
    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
2639
    return ret;
2640 2641

 err:
R
Rich Salz 已提交
2642 2643
    SSL_free(ret);
    return NULL;
2644
}
2645

2646
void ssl_clear_cipher_ctx(SSL *s)
2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657
{
    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;
    }
2658
#ifndef OPENSSL_NO_COMP
R
Rich Salz 已提交
2659 2660 2661 2662
    COMP_CTX_free(s->expand);
    s->expand = NULL;
    COMP_CTX_free(s->compress);
    s->compress = NULL;
2663 2664
#endif
}
2665

B
Ben Laurie 已提交
2666
X509 *SSL_get_certificate(const SSL *s)
2667 2668 2669 2670 2671 2672
{
    if (s->cert != NULL)
        return (s->cert->key->x509);
    else
        return (NULL);
}
2673

2674
EVP_PKEY *SSL_get_privatekey(const SSL *s)
2675 2676 2677 2678 2679 2680
{
    if (s->cert != NULL)
        return (s->cert->key->privatekey);
    else
        return (NULL);
}
2681

2682
X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2683 2684 2685 2686 2687 2688
{
    if (ctx->cert != NULL)
        return ctx->cert->key->x509;
    else
        return NULL;
}
2689 2690

EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2691 2692 2693 2694 2695 2696
{
    if (ctx->cert != NULL)
        return ctx->cert->key->privatekey;
    else
        return NULL;
}
2697

2698
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2699 2700 2701 2702 2703 2704
{
    if ((s->session != NULL) && (s->session->cipher != NULL))
        return (s->session->cipher);
    return (NULL);
}

2705
const COMP_METHOD *SSL_get_current_compression(SSL *s)
2706
{
R
Rich Salz 已提交
2707 2708 2709 2710 2711
#ifndef OPENSSL_NO_COMP
    return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
#else
    return NULL;
#endif
2712
}
2713 2714

const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2715
{
R
Rich Salz 已提交
2716 2717 2718 2719
#ifndef OPENSSL_NO_COMP
    return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
#else
    return NULL;
2720
#endif
R
Rich Salz 已提交
2721
}
2722 2723 2724 2725 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

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);
}
2752

2753
void ssl_free_wbio_buffer(SSL *s)
2754
{
R
Rich Salz 已提交
2755
    /* callers ensure s is never null */
2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774
    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;
}
2775

B
Ben Laurie 已提交
2776
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2777 2778 2779
{
    return (ctx->quiet_shutdown);
}
2780

2781 2782 2783 2784
void SSL_set_quiet_shutdown(SSL *s, int mode)
{
    s->quiet_shutdown = mode;
}
2785

B
Ben Laurie 已提交
2786
int SSL_get_quiet_shutdown(const SSL *s)
2787 2788 2789
{
    return (s->quiet_shutdown);
}
2790

2791 2792 2793 2794
void SSL_set_shutdown(SSL *s, int mode)
{
    s->shutdown = mode;
}
2795

B
Ben Laurie 已提交
2796
int SSL_get_shutdown(const SSL *s)
2797 2798 2799
{
    return (s->shutdown);
}
2800

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

B
Ben Laurie 已提交
2806
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2807 2808 2809 2810 2811 2812
{
    return (ssl->ctx);
}

SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
{
K
Kurt Roeckx 已提交
2813
    CERT *new_cert;
2814 2815 2816 2817
    if (ssl->ctx == ctx)
        return ssl->ctx;
    if (ctx == NULL)
        ctx = ssl->initial_ctx;
K
Kurt Roeckx 已提交
2818 2819 2820
    new_cert = ssl_cert_dup(ctx->cert);
    if (new_cert == NULL) {
        return NULL;
2821
    }
K
Kurt Roeckx 已提交
2822 2823
    ssl_cert_free(ssl->cert);
    ssl->cert = new_cert;
2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844

    /*
     * 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
2845
    SSL_CTX_free(ssl->ctx); /* decrement reference count */
2846 2847 2848 2849
    ssl->ctx = ctx;

    return (ssl->ctx);
}
2850

2851
#ifndef OPENSSL_NO_STDIO
2852
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2853 2854 2855
{
    return (X509_STORE_set_default_paths(ctx->cert_store));
}
2856

2857
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2858 2859 2860 2861
                                  const char *CApath)
{
    return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
}
2862
#endif
2863

B
Ben Laurie 已提交
2864
void SSL_set_info_callback(SSL *ssl,
2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878
                           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;
}
2879

B
Ben Laurie 已提交
2880
int SSL_state(const SSL *ssl)
2881 2882 2883
{
    return (ssl->state);
}
2884

2885
void SSL_set_state(SSL *ssl, int state)
2886 2887 2888
{
    ssl->state = state;
}
2889

2890 2891 2892 2893
void SSL_set_verify_result(SSL *ssl, long arg)
{
    ssl->verify_result = arg;
}
2894

B
Ben Laurie 已提交
2895
long SSL_get_verify_result(const SSL *ssl)
2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933
{
    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));
}
2934

2935
int ssl_ok(SSL *s)
2936 2937 2938
{
    return (1);
}
2939

B
Ben Laurie 已提交
2940
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2941 2942 2943
{
    return (ctx->cert_store);
}
2944

2945 2946
void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
{
R
Rich Salz 已提交
2947
    X509_STORE_free(ctx->cert_store);
2948 2949
    ctx->cert_store = store;
}
2950

B
Ben Laurie 已提交
2951
int SSL_want(const SSL *s)
2952 2953 2954
{
    return (s->rwstate);
}
2955

2956
/**
2957 2958 2959 2960 2961
 * \brief Set the callback for generating temporary RSA keys.
 * \param ctx the SSL context.
 * \param cb the callback
 */

2962
#ifndef OPENSSL_NO_RSA
2963 2964 2965 2966 2967 2968
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);
}
2969

2970 2971 2972 2973 2974 2975
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);
}
2976
#endif
2977

2978
#ifdef DOXYGEN
2979
/**
2980 2981
 * \brief The RSA temporary key callback function.
 * \param ssl the SSL session.
U
Ulf Möller 已提交
2982 2983 2984
 * \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.
2985 2986 2987 2988
 * \return the temporary RSA key.
 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
 */

2989 2990 2991
RSA *cb(SSL *ssl, int is_export, int keylength)
{
}
2992 2993
#endif

2994
/**
2995 2996 2997 2998 2999
 * \brief Set the callback for generating temporary DH keys.
 * \param ctx the SSL context.
 * \param dh the callback
 */

3000
#ifndef OPENSSL_NO_DH
3001 3002 3003 3004 3005 3006
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);
}
3007

3008 3009 3010 3011 3012
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);
}
3013
#endif
3014

3015
#ifndef OPENSSL_NO_EC
3016 3017 3018 3019 3020 3021 3022
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
3023

3024 3025 3026 3027 3028 3029
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
3030 3031
#endif

3032 3033
#ifndef OPENSSL_NO_PSK
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3034 3035 3036 3037 3038 3039
{
    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
3040
    OPENSSL_free(ctx->psk_identity_hint);
3041 3042 3043 3044 3045 3046 3047 3048
    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;
}
3049 3050

int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061
{
    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
3062
    OPENSSL_free(s->session->psk_identity_hint);
3063 3064 3065 3066 3067 3068 3069 3070
    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;
}
3071 3072

const char *SSL_get_psk_identity_hint(const SSL *s)
3073 3074 3075 3076 3077
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity_hint);
}
3078 3079

const char *SSL_get_psk_identity(const SSL *s)
3080 3081 3082 3083 3084
{
    if (s == NULL || s->session == NULL)
        return NULL;
    return (s->session->psk_identity);
}
N
Nils Larsch 已提交
3085

3086
void SSL_set_psk_client_callback(SSL *s,
3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097
                                 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
3098 3099

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110
                                     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
3111

3112
void SSL_set_psk_server_callback(SSL *s,
3113 3114 3115 3116 3117 3118 3119 3120
                                 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
3121 3122

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147
                                     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);
}
3148

3149
void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3150 3151 3152 3153 3154 3155 3156 3157
                                                int (*cb) (SSL *ssl,
                                                           int
                                                           is_forward_secure))
{
    SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
                          (void (*)(void))cb);
}

3158
void SSL_set_not_resumable_session_callback(SSL *ssl,
3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170
                                            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
3171
 */
3172

3173
EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3174
{
3175 3176 3177 3178 3179
    ssl_clear_hash_ctx(hash);
    *hash = EVP_MD_CTX_create();
    if (md)
        EVP_DigestInit_ex(*hash, md, NULL);
    return *hash;
3180
}
3181 3182

void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3183 3184
{

3185 3186 3187
    if (*hash)
        EVP_MD_CTX_destroy(*hash);
    *hash = NULL;
3188
}
3189

3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218
/* 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;
}

3219
void SSL_set_debug(SSL *s, int debug)
3220 3221 3222
{
    s->debug = debug;
}
3223 3224

int SSL_cache_hit(SSL *s)
3225 3226 3227
{
    return s->hit;
}
3228

3229
int SSL_is_server(SSL *s)
3230 3231 3232
{
    return s->server;
}
3233

D
Dr. Stephen Henson 已提交
3234
void SSL_set_security_level(SSL *s, int level)
3235 3236 3237
{
    s->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3238 3239

int SSL_get_security_level(const SSL *s)
3240 3241 3242
{
    return s->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3243

3244 3245 3246 3247 3248 3249 3250
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
3251

3252 3253 3254 3255 3256
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
3257 3258

void SSL_set0_security_ex_data(SSL *s, void *ex)
3259 3260 3261
{
    s->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3262 3263

void *SSL_get0_security_ex_data(const SSL *s)
3264 3265 3266
{
    return s->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3267 3268

void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3269 3270 3271
{
    ctx->cert->sec_level = level;
}
D
Dr. Stephen Henson 已提交
3272 3273

int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3274 3275 3276
{
    return ctx->cert->sec_level;
}
D
Dr. Stephen Henson 已提交
3277

3278 3279 3280 3281 3282 3283 3284
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
3285

3286 3287 3288 3289 3290 3291 3292 3293
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
3294 3295

void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3296 3297 3298
{
    ctx->cert->sec_ex = ex;
}
D
Dr. Stephen Henson 已提交
3299 3300

void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3301 3302 3303
{
    return ctx->cert->sec_ex;
}
D
Dr. Stephen Henson 已提交
3304

3305
IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);