ssl_lib.c 85.7 KB
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/*! \file ssl/ssl_lib.c
 *  \brief Version independent SSL functions.
 */
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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.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
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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
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
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/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * ECC cipher suite support in OpenSSL originally developed by 
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */
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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
#  include <assert.h>
#endif
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#include <stdio.h>
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#include "ssl_locl.h"
#include "kssl_lcl.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
#include <openssl/engine.h>
#endif
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const char *SSL_version_str=OPENSSL_VERSION_TEXT;
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SSL3_ENC_METHOD ssl3_undef_enc_method={
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	/* evil casts, but these functions are only called if there's a library bug */
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	(int (*)(SSL *,int))ssl_undefined_function,
	(int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
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	ssl_undefined_function,
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	(int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
	(int (*)(SSL*, int))ssl_undefined_function,
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	(int (*)(SSL *,  const char*, int, unsigned char *))ssl_undefined_function,
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	0,	/* finish_mac_length */
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	(int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
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	NULL,	/* client_finished_label */
	0,	/* client_finished_label_len */
	NULL,	/* server_finished_label */
	0,	/* server_finished_label_len */
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	(int (*)(int))ssl_undefined_function,
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	(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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	};
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int SSL_clear(SSL *s)
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	{

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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;
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	s->shutdown=0;
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#if 0 /* Disabled since version 1.10 of this file (early return not
       * needed because SSL_clear is not called when doing renegotiation) */
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	/* This is set if we are doing dynamic renegotiation so keep
	 * the old cipher.  It is sort of a SSL_clear_lite :-) */
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	if (s->renegotiate) return(1);
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#else
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	if (s->renegotiate)
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		{
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		SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
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		return 0;
		}
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#endif
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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;
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	s->client_version=s->version;
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	s->rwstate=SSL_NOTHING;
	s->rstate=SSL_ST_READ_HEADER;
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#if 0
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	s->read_ahead=s->ctx->read_ahead;
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#endif
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	if (s->init_buf != NULL)
		{
		BUF_MEM_free(s->init_buf);
		s->init_buf=NULL;
		}

	ssl_clear_cipher_ctx(s);
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	ssl_clear_hash_ctx(&s->read_hash);
	ssl_clear_hash_ctx(&s->write_hash);
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	s->first_packet=0;

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#if 1
	/* Check to see if we were changed into a different method, if
	 * so, revert back if we are not doing session-id reuse. */
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	if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
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		{
		s->method->ssl_free(s);
		s->method=s->ctx->method;
		if (!s->method->ssl_new(s))
			return(0);
		}
	else
#endif
		s->method->ssl_clear(s);
	return(1);
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	}

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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)
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	{
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	STACK_OF(SSL_CIPHER) *sk;
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	ctx->method=meth;

	sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
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		&(ctx->cipher_list_by_id),
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		meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, ctx->cert);
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	if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
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		{
		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=(SSL *)OPENSSL_malloc(sizeof(SSL));
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	if (s == NULL) goto err;
	memset(s,0,sizeof(SSL));

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#ifndef	OPENSSL_NO_KRB5
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	s->kssl_ctx = kssl_ctx_new();
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#endif	/* OPENSSL_NO_KRB5 */
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	s->options=ctx->options;
	s->mode=ctx->mode;
	s->max_cert_list=ctx->max_cert_list;

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	if (ctx->cert != NULL)
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		{
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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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		}
	else
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		s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
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	s->read_ahead=ctx->read_ahead;
	s->msg_callback=ctx->msg_callback;
	s->msg_callback_arg=ctx->msg_callback_arg;
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	s->verify_mode=ctx->verify_mode;
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	s->not_resumable_session_cb=ctx->not_resumable_session_cb;
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#if 0
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	s->verify_depth=ctx->verify_depth;
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#endif
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	s->sid_ctx_length=ctx->sid_ctx_length;
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	OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
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	memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
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	s->verify_callback=ctx->default_verify_callback;
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	s->generate_session_id=ctx->generate_session_id;
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	s->param = X509_VERIFY_PARAM_new();
	if (!s->param)
		goto err;
	X509_VERIFY_PARAM_inherit(s->param, ctx->param);
#if 0
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	s->purpose = ctx->purpose;
	s->trust = ctx->trust;
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#endif
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	s->quiet_shutdown=ctx->quiet_shutdown;
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	s->max_send_fragment = ctx->max_send_fragment;
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	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
	s->ctx=ctx;
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#ifndef OPENSSL_NO_TLSEXT
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	s->tlsext_debug_cb = 0;
	s->tlsext_debug_arg = NULL;
	s->tlsext_ticket_expected = 0;
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	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;
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	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
	s->initial_ctx=ctx;
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#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;
# endif
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#endif
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	s->verify_result=X509_V_OK;

	s->method=ctx->method;

	if (!s->method->ssl_new(s))
		goto err;

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

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	return(s);
err:
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	if (s != NULL)
		{
		if (s->cert != NULL)
			ssl_cert_free(s->cert);
		if (s->ctx != NULL)
			SSL_CTX_free(s->ctx); /* decrement reference count */
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		OPENSSL_free(s);
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		}
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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)
    {
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    if(sid_ctx_len > sizeof ctx->sid_ctx)
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	{
	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);

    return 1;
    }

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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);

    return 1;
    }

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int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
	{
	CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
	ctx->generate_session_id = cb;
	CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
	return 1;
	}

int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
	{
	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,
465
				unsigned int id_len)
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	{
	/* 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
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	 * use by this SSL. */
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	SSL_SESSION r, *p;
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	if(id_len > sizeof r.session_id)
		return 0;

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	r.ssl_version = ssl->version;
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	r.session_id_length = id_len;
	memcpy(r.session_id, id, id_len);
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	/* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
	 * callback is calling us to check the uniqueness of a shorter ID, it
	 * must be compared as a padded-out ID because that is what it will be
	 * converted to when the callback has finished choosing it. */
	if((r.ssl_version == SSL2_VERSION) &&
			(id_len < SSL2_SSL_SESSION_ID_LENGTH))
		{
		memset(r.session_id + id_len, 0,
			SSL2_SSL_SESSION_ID_LENGTH - id_len);
		r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
		}
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	CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
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	p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
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	CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
	return (p != NULL);
	}

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int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
499
	{
500
	return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
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	}
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int SSL_set_purpose(SSL *s, int purpose)
504
	{
505
	return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
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	}
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int SSL_CTX_set_trust(SSL_CTX *s, int trust)
509
	{
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	return X509_VERIFY_PARAM_set_trust(s->param, trust);
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	}
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int SSL_set_trust(SSL *s, int trust)
514
	{
515
	return X509_VERIFY_PARAM_set_trust(s->param, trust);
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	}
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int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
	{
	return X509_VERIFY_PARAM_set1(ctx->param, vpm);
	}

int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
	{
	return X509_VERIFY_PARAM_set1(ssl->param, vpm);
	}

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void SSL_certs_clear(SSL *s)
	{
	ssl_cert_clear_certs(s->cert);
	}

533
void SSL_free(SSL *s)
534
	{
535 536
	int i;

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	if(s == NULL)
	    return;

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	i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
#ifdef REF_PRINT
	REF_PRINT("SSL",s);
#endif
	if (i > 0) return;
#ifdef REF_CHECK
	if (i < 0)
		{
		fprintf(stderr,"SSL_free, bad reference count\n");
		abort(); /* ok */
		}
#endif

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	if (s->param)
		X509_VERIFY_PARAM_free(s->param);

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	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
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	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);
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		s->bbio=NULL;
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		}
	if (s->rbio != NULL)
		BIO_free_all(s->rbio);
	if ((s->wbio != NULL) && (s->wbio != s->rbio))
		BIO_free_all(s->wbio);

	if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);

	/* add extra stuff */
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	if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
	if (s->cipher_list_by_id != NULL) 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);
587 588
	ssl_clear_hash_ctx(&s->read_hash);
	ssl_clear_hash_ctx(&s->write_hash);
589 590 591 592

	if (s->cert != NULL) ssl_cert_free(s->cert);
	/* Free up if allocated */

593
#ifndef OPENSSL_NO_TLSEXT
B
Ben Laurie 已提交
594 595
	if (s->tlsext_hostname)
		OPENSSL_free(s->tlsext_hostname);
596
	if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
B
Bodo Möller 已提交
597 598 599 600
#ifndef OPENSSL_NO_EC
	if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
	if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
#endif /* OPENSSL_NO_EC */
601
	if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
602 603 604 605 606 607 608
	if (s->tlsext_ocsp_exts)
		sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
						X509_EXTENSION_free);
	if (s->tlsext_ocsp_ids)
		sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
	if (s->tlsext_ocsp_resp)
		OPENSSL_free(s->tlsext_ocsp_resp);
609
#endif
610 611

	if (s->client_CA != NULL)
B
Ben Laurie 已提交
612
		sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
613 614 615

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

D
Dr. Stephen Henson 已提交
616 617
	if (s->ctx) SSL_CTX_free(s->ctx);

618 619 620 621 622
#ifndef	OPENSSL_NO_KRB5
	if (s->kssl_ctx != NULL)
		kssl_ctx_free(s->kssl_ctx);
#endif	/* OPENSSL_NO_KRB5 */

B
Ben Laurie 已提交
623
#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
B
Ben Laurie 已提交
624 625 626 627
	if (s->next_proto_negotiated)
		OPENSSL_free(s->next_proto_negotiated);
#endif

B
Ben Laurie 已提交
628 629 630
        if (s->srtp_profiles)
            sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);

631
	OPENSSL_free(s);
632 633
	}

634
void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653
	{
	/* If the output buffering BIO is still in place, remove it
	 */
	if (s->bbio != NULL)
		{
		if (s->wbio == s->bbio)
			{
			s->wbio=s->wbio->next_bio;
			s->bbio->next_bio=NULL;
			}
		}
	if ((s->rbio != NULL) && (s->rbio != rbio))
		BIO_free_all(s->rbio);
	if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
		BIO_free_all(s->wbio);
	s->rbio=rbio;
	s->wbio=wbio;
	}

B
Ben Laurie 已提交
654
BIO *SSL_get_rbio(const SSL *s)
655 656
	{ return(s->rbio); }

B
Ben Laurie 已提交
657
BIO *SSL_get_wbio(const SSL *s)
658 659
	{ return(s->wbio); }

B
Ben Laurie 已提交
660
int SSL_get_fd(const SSL *s)
661
	{
662
	return(SSL_get_rfd(s));
663 664
	}

B
Ben Laurie 已提交
665
int SSL_get_rfd(const SSL *s)
666 667 668 669 670 671 672 673 674 675 676
	{
	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);
	}

B
Ben Laurie 已提交
677
int SSL_get_wfd(const SSL *s)
678 679 680 681 682 683 684 685 686 687 688
	{
	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);
	}

689
#ifndef OPENSSL_NO_SOCK
690
int SSL_set_fd(SSL *s,int fd)
691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708
	{
	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);
	}

709
int SSL_set_wfd(SSL *s,int fd)
710 711 712 713
	{
	int ret=0;
	BIO *bio=NULL;

714 715 716 717
	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());
718

719 720 721 722 723 724 725
		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));
726 727 728 729 730
	ret=1;
err:
	return(ret);
	}

731
int SSL_set_rfd(SSL *s,int fd)
732 733 734 735
	{
	int ret=0;
	BIO *bio=NULL;

736 737
	if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
		|| ((int)BIO_get_fd(s->wbio,NULL) != fd))
738
		{
739 740 741 742 743 744 745 746 747
		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));
748
		}
749 750
	else
		SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
751 752 753 754 755 756
	ret=1;
err:
	return(ret);
	}
#endif

757 758

/* return length of latest Finished message we sent, copy to 'buf' */
B
Ben Laurie 已提交
759
size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
760 761 762 763 764 765 766 767 768 769 770 771 772 773
	{
	size_t ret = 0;
	
	if (s->s3 != NULL)
		{
		ret = s->s3->tmp.finish_md_len;
		if (count > ret)
			count = ret;
		memcpy(buf, s->s3->tmp.finish_md, count);
		}
	return ret;
	}

/* return length of latest Finished message we expected, copy to 'buf' */
B
Ben Laurie 已提交
774
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
775 776 777 778 779 780 781 782 783 784 785 786 787 788
	{
	size_t ret = 0;
	
	if (s->s3 != NULL)
		{
		ret = s->s3->tmp.peer_finish_md_len;
		if (count > ret)
			count = ret;
		memcpy(buf, s->s3->tmp.peer_finish_md, count);
		}
	return ret;
	}


B
Ben Laurie 已提交
789
int SSL_get_verify_mode(const SSL *s)
790 791 792 793
	{
	return(s->verify_mode);
	}

B
Ben Laurie 已提交
794
int SSL_get_verify_depth(const SSL *s)
795
	{
796
	return X509_VERIFY_PARAM_get_depth(s->param);
797 798
	}

B
Ben Laurie 已提交
799
int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
800 801 802 803
	{
	return(s->verify_callback);
	}

B
Ben Laurie 已提交
804
int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
805
	{
806
	return(ctx->verify_mode);
807 808
	}

B
Ben Laurie 已提交
809
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
810
	{
811
	return X509_VERIFY_PARAM_get_depth(ctx->param);
812 813
	}

B
Ben Laurie 已提交
814
int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
815 816 817 818
	{
	return(ctx->default_verify_callback);
	}

B
Ben Laurie 已提交
819 820
void SSL_set_verify(SSL *s,int mode,
		    int (*callback)(int ok,X509_STORE_CTX *ctx))
821 822 823 824 825 826
	{
	s->verify_mode=mode;
	if (callback != NULL)
		s->verify_callback=callback;
	}

827 828
void SSL_set_verify_depth(SSL *s,int depth)
	{
829
	X509_VERIFY_PARAM_set_depth(s->param, depth);
830 831
	}

832
void SSL_set_read_ahead(SSL *s,int yes)
833 834 835 836
	{
	s->read_ahead=yes;
	}

B
Ben Laurie 已提交
837
int SSL_get_read_ahead(const SSL *s)
838 839 840 841
	{
	return(s->read_ahead);
	}

B
Ben Laurie 已提交
842
int SSL_pending(const SSL *s)
843
	{
B
Bodo Möller 已提交
844 845 846 847 848 849 850
	/* 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.)
	 */
851 852 853
	return(s->method->ssl_pending(s));
	}

B
Ben Laurie 已提交
854
X509 *SSL_get_peer_certificate(const SSL *s)
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869
	{
	X509 *r;
	
	if ((s == NULL) || (s->session == NULL))
		r=NULL;
	else
		r=s->session->peer;

	if (r == NULL) return(r);

	CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);

	return(r);
	}

B
Ben Laurie 已提交
870
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
871
	{
B
Ben Laurie 已提交
872
	STACK_OF(X509) *r;
873
	
874
	if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
875 876
		r=NULL;
	else
877
		r=s->session->sess_cert->cert_chain;
878

879 880 881
	/* If we are a client, cert_chain includes the peer's own
	 * certificate; if we are a server, it does not. */
	
882 883 884 885 886
	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 */
B
Ben Laurie 已提交
887
void SSL_copy_session_id(SSL *t,const SSL *f)
888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
	{
	CERT *tmp;

	/* Do we need to to SSL locking? */
	SSL_set_session(t,SSL_get_session(f));

	/* 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 */
		}

	tmp=t->cert;
	if (f->cert != NULL)
		{
		CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
		t->cert=f->cert;
		}
	else
		t->cert=NULL;
	if (tmp != NULL) ssl_cert_free(tmp);
B
Ben Laurie 已提交
912
	SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
913 914
	}

915
/* Fix this so it checks all the valid key/cert options */
B
Ben Laurie 已提交
916
int SSL_CTX_check_private_key(const SSL_CTX *ctx)
917 918
	{
	if (	(ctx == NULL) ||
919 920
		(ctx->cert == NULL) ||
		(ctx->cert->key->x509 == NULL))
921 922 923 924
		{
		SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
		return(0);
		}
925
	if 	(ctx->cert->key->privatekey == NULL)
926 927 928 929
		{
		SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
		return(0);
		}
930
	return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
931 932
	}

933
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
934
int SSL_check_private_key(const SSL *ssl)
935 936 937 938 939 940
	{
	if (ssl == NULL)
		{
		SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
		return(0);
		}
941
	if (ssl->cert == NULL)
B
Bodo Möller 已提交
942
		{
943
		SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
944
		return 0;
B
Bodo Möller 已提交
945
		}
946 947 948 949 950 951 952 953 954 955 956 957 958 959
	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));
	}

960
int SSL_accept(SSL *s)
961
	{
962 963 964 965
	if (s->handshake_func == 0)
		/* Not properly initialized yet */
		SSL_set_accept_state(s);

966 967 968
	return(s->method->ssl_accept(s));
	}

969
int SSL_connect(SSL *s)
970
	{
971 972 973 974
	if (s->handshake_func == 0)
		/* Not properly initialized yet */
		SSL_set_connect_state(s);

975 976 977
	return(s->method->ssl_connect(s));
	}

B
Ben Laurie 已提交
978
long SSL_get_default_timeout(const SSL *s)
979 980 981 982
	{
	return(s->method->get_timeout());
	}

983
int SSL_read(SSL *s,void *buf,int num)
984
	{
985 986
	if (s->handshake_func == 0)
		{
987
		SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
988 989 990
		return -1;
		}

991 992 993 994 995 996 997 998
	if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
		{
		s->rwstate=SSL_NOTHING;
		return(0);
		}
	return(s->method->ssl_read(s,buf,num));
	}

999
int SSL_peek(SSL *s,void *buf,int num)
1000
	{
B
Bodo Möller 已提交
1001 1002
	if (s->handshake_func == 0)
		{
1003
		SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
B
Bodo Möller 已提交
1004 1005 1006
		return -1;
		}

1007 1008 1009 1010 1011 1012 1013
	if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
		{
		return(0);
		}
	return(s->method->ssl_peek(s,buf,num));
	}

1014
int SSL_write(SSL *s,const void *buf,int num)
1015
	{
1016 1017
	if (s->handshake_func == 0)
		{
1018
		SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1019 1020 1021
		return -1;
		}

1022 1023 1024 1025 1026 1027 1028 1029 1030
	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));
	}

1031
int SSL_shutdown(SSL *s)
1032
	{
B
Bodo Möller 已提交
1033
	/* Note that this function behaves differently from what one might
B
Bodo Möller 已提交
1034 1035 1036 1037 1038
	 * 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).
	 */

1039 1040
	if (s->handshake_func == 0)
		{
1041
		SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1042 1043 1044
		return -1;
		}

1045 1046 1047 1048 1049 1050
	if ((s != NULL) && !SSL_in_init(s))
		return(s->method->ssl_shutdown(s));
	else
		return(1);
	}

1051
int SSL_renegotiate(SSL *s)
1052
	{
D
Dr. Stephen Henson 已提交
1053 1054 1055 1056 1057
	if (s->renegotiate == 0)
		s->renegotiate=1;

	s->new_session=1;

1058 1059 1060
	return(s->method->ssl_renegotiate(s));
	}

D
Dr. Stephen Henson 已提交
1061
int SSL_renegotiate_abbreviated(SSL *s)
B
Bodo Möller 已提交
1062
	{
D
Dr. Stephen Henson 已提交
1063 1064
	if (s->renegotiate == 0)
		s->renegotiate=1;
B
Bodo Möller 已提交
1065

D
Dr. Stephen Henson 已提交
1066
	s->new_session=0;
B
Bodo Möller 已提交
1067

D
Dr. Stephen Henson 已提交
1068
	return(s->method->ssl_renegotiate(s));
B
Bodo Möller 已提交
1069
	}
D
Dr. Stephen Henson 已提交
1070

1071 1072 1073 1074
int SSL_renegotiate_pending(SSL *s)
	{
	/* becomes true when negotiation is requested;
	 * false again once a handshake has finished */
D
Dr. Stephen Henson 已提交
1075
	return (s->renegotiate != 0);
1076 1077
	}

1078
long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1079
	{
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
	long l;

	switch (cmd)
		{
	case SSL_CTRL_GET_READ_AHEAD:
		return(s->read_ahead);
	case SSL_CTRL_SET_READ_AHEAD:
		l=s->read_ahead;
		s->read_ahead=larg;
		return(l);
1090 1091 1092 1093 1094

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

1095 1096
	case SSL_CTRL_OPTIONS:
		return(s->options|=larg);
1097 1098
	case SSL_CTRL_CLEAR_OPTIONS:
		return(s->options&=~larg);
1099 1100
	case SSL_CTRL_MODE:
		return(s->mode|=larg);
1101 1102
	case SSL_CTRL_CLEAR_MODE:
		return(s->mode &=~larg);
1103 1104 1105 1106 1107 1108
	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);
B
Ben Laurie 已提交
1109
	case SSL_CTRL_SET_MTU:
1110
#ifndef OPENSSL_NO_DTLS1
D
Dr. Stephen Henson 已提交
1111
		if (larg < (long)dtls1_min_mtu())
D
Dr. Stephen Henson 已提交
1112
			return 0;
1113
#endif
D
Dr. Stephen Henson 已提交
1114

1115
		if (SSL_IS_DTLS(s))
B
Ben Laurie 已提交
1116 1117 1118 1119 1120
			{
			s->d1->mtu = larg;
			return larg;
			}
		return 0;
1121 1122 1123 1124 1125
	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;
1126 1127 1128 1129
	case SSL_CTRL_GET_RI_SUPPORT:
		if (s->s3)
			return s->s3->send_connection_binding;
		else return 0;
1130 1131 1132 1133
	case SSL_CTRL_CERT_FLAGS:
		return(s->cert->cert_flags|=larg);
	case SSL_CTRL_CLEAR_CERT_FLAGS:
		return(s->cert->cert_flags &=~larg);
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144

	case SSL_CTRL_GET_RAW_CIPHERLIST:
		if (parg)
			{
			if (s->cert->ciphers_raw == NULL)
				return 0;
			*(unsigned char **)parg = s->cert->ciphers_raw;
			return (int)s->cert->ciphers_rawlen;
			}
		else
			return ssl_put_cipher_by_char(s,NULL,NULL);
1145 1146 1147
	default:
		return(s->method->ssl_ctrl(s,cmd,larg,parg));
		}
1148 1149
	}

1150
long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1151 1152 1153
	{
	switch(cmd)
		{
1154
	case SSL_CTRL_SET_MSG_CALLBACK:
1155
		s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1156 1157
		return 1;
		
1158 1159 1160 1161 1162
	default:
		return(s->method->ssl_callback_ctrl(s,cmd,fp));
		}
	}

B
Ben Laurie 已提交
1163
LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1164 1165 1166 1167
	{
	return ctx->sessions;
	}

1168
long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1169
	{
1170
	long l;
1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
	/* For some cases with ctx == NULL perform syntax checks */
	if (ctx == NULL)
		{
		switch (cmd)
			{
		case SSL_CTRL_SET_CURVES_LIST:
			return tls1_set_curves_list(NULL, NULL, parg);
		case SSL_CTRL_SET_SIGALGS_LIST:
		case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
			return tls1_set_sigalgs_list(NULL, parg, 0);
		default:
			return 0;
			}
		}
1185 1186 1187 1188 1189 1190 1191 1192 1193

	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);
1194 1195 1196 1197 1198
		
	case SSL_CTRL_SET_MSG_CALLBACK_ARG:
		ctx->msg_callback_arg = parg;
		return 1;

1199 1200 1201 1202 1203 1204
	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);
1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219

	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:
B
Ben Laurie 已提交
1220
		return(lh_SSL_SESSION_num_items(ctx->sessions));
1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244
	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);
1245 1246
	case SSL_CTRL_CLEAR_OPTIONS:
		return(ctx->options&=~larg);
1247 1248
	case SSL_CTRL_MODE:
		return(ctx->mode|=larg);
1249 1250
	case SSL_CTRL_CLEAR_MODE:
		return(ctx->mode&=~larg);
1251 1252 1253 1254 1255
	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;
1256 1257 1258 1259
	case SSL_CTRL_CERT_FLAGS:
		return(ctx->cert->cert_flags|=larg);
	case SSL_CTRL_CLEAR_CERT_FLAGS:
		return(ctx->cert->cert_flags &=~larg);
1260 1261 1262
	default:
		return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
		}
1263 1264
	}

1265
long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1266 1267 1268
	{
	switch(cmd)
		{
1269
	case SSL_CTRL_SET_MSG_CALLBACK:
1270
		ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1271 1272
		return 1;

1273 1274 1275 1276 1277
	default:
		return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
		}
	}

1278
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1279 1280 1281 1282 1283 1284 1285 1286 1287 1288
	{
	long l;

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

1289 1290
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
			const SSL_CIPHER * const *bp)
1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
	{
	long l;

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

1301
/** return a STACK of the ciphers available for the SSL and in order of
1302
 * preference */
B
Ben Laurie 已提交
1303
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1304
	{
1305
	if (s != NULL)
1306
		{
1307 1308 1309 1310 1311 1312 1313 1314 1315
		if (s->cipher_list != NULL)
			{
			return(s->cipher_list);
			}
		else if ((s->ctx != NULL) &&
			(s->ctx->cipher_list != NULL))
			{
			return(s->ctx->cipher_list);
			}
1316 1317 1318 1319
		}
	return(NULL);
	}

1320
/** return a STACK of the ciphers available for the SSL and in order of
1321
 * algorithm id */
B
Ben Laurie 已提交
1322
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1323
	{
1324
	if (s != NULL)
1325
		{
1326 1327 1328 1329 1330 1331 1332 1333 1334
		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);
			}
1335 1336 1337 1338
		}
	return(NULL);
	}

1339
/** The old interface to get the same thing as SSL_get_ciphers() */
B
Ben Laurie 已提交
1340
const char *SSL_get_cipher_list(const SSL *s,int n)
1341 1342
	{
	SSL_CIPHER *c;
B
Ben Laurie 已提交
1343
	STACK_OF(SSL_CIPHER) *sk;
1344 1345 1346

	if (s == NULL) return(NULL);
	sk=SSL_get_ciphers(s);
B
Ben Laurie 已提交
1347
	if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1348
		return(NULL);
B
Ben Laurie 已提交
1349
	c=sk_SSL_CIPHER_value(sk,n);
1350 1351 1352 1353
	if (c == NULL) return(NULL);
	return(c->name);
	}

1354
/** specify the ciphers to be used by default by the SSL_CTX */
1355
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1356
	{
B
Ben Laurie 已提交
1357
	STACK_OF(SSL_CIPHER) *sk;
1358 1359
	
	sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1360
		&ctx->cipher_list_by_id,str, ctx->cert);
1361 1362 1363
	/* 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
1364 1365
	 * has been disabled). This is not an error as far as
	 * ssl_create_cipher_list is concerned, and hence
1366 1367 1368 1369 1370 1371 1372 1373 1374 1375
	 * 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;
1376 1377
	}

1378
/** specify the ciphers to be used by the SSL */
1379
int SSL_set_cipher_list(SSL *s,const char *str)
1380
	{
B
Ben Laurie 已提交
1381
	STACK_OF(SSL_CIPHER) *sk;
1382 1383
	
	sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1384
		&s->cipher_list_by_id,str, s->cert);
1385 1386 1387 1388 1389 1390 1391 1392 1393
	/* 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;
1394 1395 1396
	}

/* works well for SSLv2, not so good for SSLv3 */
B
Ben Laurie 已提交
1397
char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1398
	{
B
Ben Laurie 已提交
1399
	char *p;
B
Ben Laurie 已提交
1400
	STACK_OF(SSL_CIPHER) *sk;
1401 1402 1403 1404 1405 1406 1407 1408 1409
	SSL_CIPHER *c;
	int i;

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

	p=buf;
	sk=s->session->ciphers;
B
Ben Laurie 已提交
1410
	for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1411
		{
1412 1413
		int n;

B
Ben Laurie 已提交
1414
		c=sk_SSL_CIPHER_value(sk,i);
1415 1416
		n=strlen(c->name);
		if (n+1 > len)
1417
			{
1418 1419 1420 1421
			if (p != buf)
				--p;
			*p='\0';
			return buf;
1422
			}
1423 1424
		strcpy(p,c->name);
		p+=n;
1425
		*(p++)=':';
1426
		len-=n+1;
1427 1428 1429 1430 1431
		}
	p[-1]='\0';
	return(buf);
	}

1432
int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1433
			     int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1434 1435 1436
	{
	int i,j=0;
	SSL_CIPHER *c;
1437
	CERT *ct = s->cert;
1438
	unsigned char *q;
1439
	int no_scsv = s->renegotiate;
1440 1441
	/* Set disabled masks for this session */
	ssl_set_client_disabled(s);
1442 1443 1444 1445

	if (sk == NULL) return(0);
	q=p;

B
Ben Laurie 已提交
1446
	for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1447
		{
B
Ben Laurie 已提交
1448
		c=sk_SSL_CIPHER_value(sk,i);
1449 1450 1451 1452
		/* Skip disabled ciphers */
		if (c->algorithm_ssl & ct->mask_ssl ||
			c->algorithm_mkey & ct->mask_k ||
			c->algorithm_auth & ct->mask_a)
1453
			continue;
1454 1455 1456 1457 1458 1459 1460 1461 1462
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
		if (c->id == SSL3_CK_SCSV)
			{
			if (no_scsv)
				continue;
			else
				no_scsv = 1;
			}
#endif
1463
		j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1464 1465
		p+=j;
		}
1466
	/* If p == q, no ciphers and caller indicates an error. Otherwise
D
Dr. Stephen Henson 已提交
1467
	 * add SCSV if not renegotiating.
1468
	 */
1469
	if (p != q && !no_scsv)
1470
		{
D
Typo  
Dr. Stephen Henson 已提交
1471
		static SSL_CIPHER scsv =
1472
			{
1473
			0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1474
			};
D
Typo  
Dr. Stephen Henson 已提交
1475
		j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1476 1477
		p+=j;
#ifdef OPENSSL_RI_DEBUG
1478
		fprintf(stderr, "SCSV sent by client\n");
1479 1480 1481
#endif
		}

1482 1483 1484
	return(p-q);
	}

B
Ben Laurie 已提交
1485 1486
STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
					       STACK_OF(SSL_CIPHER) **skp)
1487
	{
1488
	const SSL_CIPHER *c;
B
Ben Laurie 已提交
1489
	STACK_OF(SSL_CIPHER) *sk;
1490
	int i,n;
D
Dr. Stephen Henson 已提交
1491 1492
	if (s->s3)
		s->s3->send_connection_binding = 0;
1493

1494 1495 1496 1497 1498 1499 1500
	n=ssl_put_cipher_by_char(s,NULL,NULL);
	if ((num%n) != 0)
		{
		SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
		return(NULL);
		}
	if ((skp == NULL) || (*skp == NULL))
1501
		sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1502 1503 1504
	else
		{
		sk= *skp;
B
Ben Laurie 已提交
1505
		sk_SSL_CIPHER_zero(sk);
1506 1507
		}

1508 1509 1510 1511 1512 1513 1514 1515 1516 1517
	if (s->cert->ciphers_raw)
		OPENSSL_free(s->cert->ciphers_raw);
	s->cert->ciphers_raw = BUF_memdup(p, num);
	if (s->cert->ciphers_raw == NULL)
		{
		SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
		goto err;
		}
	s->cert->ciphers_rawlen = (size_t)num;

1518 1519
	for (i=0; i<num; i+=n)
		{
1520
		/* Check for SCSV */
D
Dr. Stephen Henson 已提交
1521
		if (s->s3 && (n != 3 || !p[0]) &&
1522 1523
			(p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
			(p[n-1] == (SSL3_CK_SCSV & 0xff)))
1524
			{
1525
			/* SCSV fatal if renegotiating */
D
Dr. Stephen Henson 已提交
1526
			if (s->renegotiate)
1527 1528 1529 1530 1531
				{
				SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
				ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 
				goto err;
				}
1532 1533 1534
			s->s3->send_connection_binding = 1;
			p += n;
#ifdef OPENSSL_RI_DEBUG
1535
			fprintf(stderr, "SCSV received by server\n");
1536 1537 1538 1539
#endif
			continue;
			}

1540 1541 1542 1543
		c=ssl_get_cipher_by_char(s,p);
		p+=n;
		if (c != NULL)
			{
B
Ben Laurie 已提交
1544
			if (!sk_SSL_CIPHER_push(sk,c))
1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556
				{
				SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
				goto err;
				}
			}
		}

	if (skp != NULL)
		*skp=sk;
	return(sk);
err:
	if ((skp == NULL) || (*skp == NULL))
B
Ben Laurie 已提交
1557
		sk_SSL_CIPHER_free(sk);
1558 1559 1560
	return(NULL);
	}

1561

D
Typo.  
Dr. Stephen Henson 已提交
1562
#ifndef OPENSSL_NO_TLSEXT
1563
/** return a servername extension value if provided in Client Hello, or NULL.
1564
 * So far, only host_name types are defined (RFC 3546).
1565 1566
 */

1567 1568 1569
const char *SSL_get_servername(const SSL *s, const int type)
	{
	if (type != TLSEXT_NAMETYPE_host_name)
1570
		return NULL;
B
Bodo Möller 已提交
1571 1572

	return s->session && !s->tlsext_hostname ?
1573 1574 1575
		s->session->tlsext_hostname :
		s->tlsext_hostname;
	}
1576

1577 1578
int SSL_get_servername_type(const SSL *s)
	{
1579
	if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1580
		return TLSEXT_NAMETYPE_host_name;
1581
	return -1;
1582
	}
B
Ben Laurie 已提交
1583

B
Ben Laurie 已提交
1584
# ifndef OPENSSL_NO_NEXTPROTONEG
B
Ben Laurie 已提交
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699
/* SSL_select_next_proto implements the standard protocol selection. It is
 * expected that this function is called from the callback set by
 * SSL_CTX_set_next_proto_select_cb.
 *
 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
 * strings. The length byte itself is not included in the length. A byte
 * string of length 0 is invalid. No byte string may be truncated.
 *
 * The current, but experimental algorithm for selecting the protocol is:
 *
 * 1) If the server doesn't support NPN then this is indicated to the
 * callback. In this case, the client application has to abort the connection
 * or have a default application level protocol.
 *
 * 2) If the server supports NPN, but advertises an empty list then the
 * client selects the first protcol in its list, but indicates via the
 * API that this fallback case was enacted.
 *
 * 3) Otherwise, the client finds the first protocol in the server's list
 * that it supports and selects this protocol. This is because it's
 * assumed that the server has better information about which protocol
 * a client should use.
 *
 * 4) If the client doesn't support any of the server's advertised
 * protocols, then this is treated the same as case 2.
 *
 * It returns either
 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
 */
int SSL_select_next_proto(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;
	}

/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
 * requested protocol for this connection and returns 0. If the client didn't
 * request any protocol, then *data is set to NULL.
 *
 * Note that the client can request any protocol it chooses. The value returned
 * from this function need not be a member of the list of supported protocols
 * provided by the callback.
 */
void SSL_get0_next_proto_negotiated(const SSL *s, const 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
 * client needs to select a protocol from the server's provided list. |out|
 * must be set to point to the selected protocol (which may be within |in|).
 * The length of the protocol name must be written into |outlen|. The server's
 * advertised protocols are provided in |in| and |inlen|. The callback can
 * assume that |in| is syntactically valid.
 *
 * The client must select a protocol. It is fatal to the connection if this
 * callback returns a value other than SSL_TLSEXT_ERR_OK.
 */
void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 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;
	}
# endif
1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754

int SSL_CTX_set_custom_cli_ext(SSL_CTX *ctx, unsigned short ext_type,
			       custom_cli_ext_first_cb_fn fn1, 
			       custom_cli_ext_second_cb_fn fn2, void* arg)
	{
	/* Check for duplicates */
	size_t i;
	custom_cli_ext_record* record;

	for (i=0; i < ctx->custom_cli_ext_records_count; i++)
		if (ext_type == ctx->custom_cli_ext_records[i].ext_type)
			return 0;

	ctx->custom_cli_ext_records = OPENSSL_realloc(ctx->custom_cli_ext_records,
														(ctx->custom_cli_ext_records_count+1) * sizeof(custom_cli_ext_record));
	if (!ctx->custom_cli_ext_records) {
		ctx->custom_cli_ext_records_count = 0;
		return 0;
	}
	ctx->custom_cli_ext_records_count++;
	record = &ctx->custom_cli_ext_records[ctx->custom_cli_ext_records_count - 1];
	record->ext_type = ext_type;
	record->fn1 = fn1;
	record->fn2 = fn2;
	record->arg = arg;
	return 1;
	}

int SSL_CTX_set_custom_srv_ext(SSL_CTX *ctx, unsigned short ext_type,
															 custom_srv_ext_first_cb_fn fn1, 
															 custom_srv_ext_second_cb_fn fn2, void* arg)
	{
	/* Check for duplicates */
	size_t i;
	custom_srv_ext_record* record;

	for (i=0; i < ctx->custom_srv_ext_records_count; i++)
		if (ext_type == ctx->custom_srv_ext_records[i].ext_type)
			return 0;

	ctx->custom_srv_ext_records = OPENSSL_realloc(ctx->custom_srv_ext_records,
														(ctx->custom_srv_ext_records_count+1) * sizeof(custom_srv_ext_record));
	if (!ctx->custom_srv_ext_records) {
		ctx->custom_srv_ext_records_count = 0;
		return 0;
	}
	ctx->custom_srv_ext_records_count++;
	record = &ctx->custom_srv_ext_records[ctx->custom_srv_ext_records_count - 1];
	record->ext_type = ext_type;
	record->fn1 = fn1;
	record->fn2 = fn2;
	record->arg = arg;
	return 1;
	}

1755
#endif
1756

1757 1758 1759
int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
	const char *label, size_t llen, const unsigned char *p, size_t plen,
	int use_context)
B
Ben Laurie 已提交
1760 1761 1762 1763 1764 1765 1766 1767 1768
	{
	if (s->version < TLS1_VERSION)
		return -1;

	return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
							   llen, p, plen,
							   use_context);
	}

B
Ben Laurie 已提交
1769
static unsigned long ssl_session_hash(const SSL_SESSION *a)
1770 1771 1772
	{
	unsigned long l;

1773 1774 1775 1776 1777
	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);
1778 1779 1780
	return(l);
	}

1781 1782 1783 1784 1785
/* NB: If this function (or indeed the hash function which uses a sort of
 * coarser function than this one) is changed, ensure
 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
 * able to construct an SSL_SESSION that will collide with any existing session
 * with a matching session ID. */
B
Ben Laurie 已提交
1786
static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1787
	{
1788 1789 1790 1791 1792
	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));
1793 1794
	}

1795 1796 1797 1798
/* These wrapper functions should remain rather than redeclaring
 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
 * variable. The reason is that the functions aren't static, they're exposed via
 * ssl.h. */
B
Ben Laurie 已提交
1799 1800
static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1801

1802
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1803
	{
1804
	SSL_CTX *ret=NULL;
B
Ben Laurie 已提交
1805

1806 1807 1808 1809 1810
	if (meth == NULL)
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
		return(NULL);
		}
1811

1812 1813 1814 1815 1816 1817 1818 1819
#ifdef OPENSSL_FIPS
	if (FIPS_mode() && (meth->version < TLS1_VERSION))	
		{
		SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
		return NULL;
		}
#endif

1820 1821 1822 1823 1824
	if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
		goto err;
		}
1825
	ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1826 1827 1828 1829 1830 1831 1832 1833 1834
	if (ret == NULL)
		goto err;

	memset(ret,0,sizeof(SSL_CTX));

	ret->method=meth;

	ret->cert_store=NULL;
	ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1835 1836 1837
	ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
	ret->session_cache_head=NULL;
	ret->session_cache_tail=NULL;
1838 1839 1840 1841

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

1842 1843 1844 1845
	ret->new_session_cb=0;
	ret->remove_session_cb=0;
	ret->get_session_cb=0;
	ret->generate_session_id=0;
1846

1847
	memset((char *)&ret->stats,0,sizeof(ret->stats));
1848 1849 1850 1851 1852 1853 1854 1855 1856 1857

	ret->references=1;
	ret->quiet_shutdown=0;

/*	ret->cipher=NULL;*/
/*	ret->s2->challenge=NULL;
	ret->master_key=NULL;
	ret->key_arg=NULL;
	ret->s2->conn_id=NULL; */

B
Ben Laurie 已提交
1858
	ret->info_callback=NULL;
1859

1860
	ret->app_verify_callback=0;
1861 1862
	ret->app_verify_arg=NULL;

1863
	ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1864
	ret->read_ahead=0;
1865 1866
	ret->msg_callback=0;
	ret->msg_callback_arg=NULL;
1867
	ret->verify_mode=SSL_VERIFY_NONE;
1868
#if 0
1869
	ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1870
#endif
1871
	ret->sid_ctx_length=0;
1872
	ret->default_verify_callback=NULL;
1873
	if ((ret->cert=ssl_cert_new()) == NULL)
1874 1875
		goto err;

1876
	ret->default_passwd_callback=0;
1877
	ret->default_passwd_callback_userdata=NULL;
1878
	ret->client_cert_cb=0;
1879 1880
	ret->app_gen_cookie_cb=0;
	ret->app_verify_cookie_cb=0;
1881

B
Ben Laurie 已提交
1882
	ret->sessions=lh_SSL_SESSION_new();
1883 1884 1885 1886 1887 1888
	if (ret->sessions == NULL) goto err;
	ret->cert_store=X509_STORE_new();
	if (ret->cert_store == NULL) goto err;

	ssl_create_cipher_list(ret->method,
		&ret->cipher_list,&ret->cipher_list_by_id,
1889
		meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, ret->cert);
B
Ben Laurie 已提交
1890 1891
	if (ret->cipher_list == NULL
	    || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1892 1893 1894 1895 1896
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
		goto err2;
		}

1897 1898 1899 1900
	ret->param = X509_VERIFY_PARAM_new();
	if (!ret->param)
		goto err;

1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916
	if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
		goto err2;
		}
	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;
		}

B
Ben Laurie 已提交
1917
	if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1918 1919
		goto err;

1920
	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1921

1922
	ret->extra_certs=NULL;
1923 1924 1925
	/* No compression for DTLS */
	if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
		ret->comp_methods=SSL_COMP_get_compression_methods();
1926

1927 1928
	ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;

1929
#ifndef OPENSSL_NO_TLSEXT
1930
	ret->tlsext_servername_callback = 0;
1931
	ret->tlsext_servername_arg = NULL;
1932 1933 1934 1935 1936 1937
	/* Setup RFC4507 ticket keys */
	if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
		|| (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
		|| (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
		ret->options |= SSL_OP_NO_TICKET;

1938 1939 1940
	ret->tlsext_status_cb = 0;
	ret->tlsext_status_arg = NULL;

B
Ben Laurie 已提交
1941
# ifndef OPENSSL_NO_NEXTPROTONEG
B
Ben Laurie 已提交
1942 1943 1944
	ret->next_protos_advertised_cb = 0;
	ret->next_proto_select_cb = 0;
# endif
1945 1946 1947 1948 1949
#endif
#ifndef OPENSSL_NO_PSK
	ret->psk_identity_hint=NULL;
	ret->psk_client_callback=NULL;
	ret->psk_server_callback=NULL;
B
Ben Laurie 已提交
1950
#endif
B
Ben Laurie 已提交
1951 1952 1953
#ifndef OPENSSL_NO_SRP
	SSL_CTX_SRP_CTX_init(ret);
#endif
1954 1955 1956 1957
	ret->custom_cli_ext_records = NULL;
	ret->custom_cli_ext_records_count = 0;
	ret->custom_srv_ext_records = NULL;
	ret->custom_srv_ext_records_count = 0;
1958
#ifndef OPENSSL_NO_BUF_FREELISTS
B
Ben Laurie 已提交
1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
	ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
	ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
	if (!ret->rbuf_freelist)
		goto err;
	ret->rbuf_freelist->chunklen = 0;
	ret->rbuf_freelist->len = 0;
	ret->rbuf_freelist->head = NULL;
	ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
	if (!ret->wbuf_freelist)
		{
		OPENSSL_free(ret->rbuf_freelist);
		goto err;
		}
	ret->wbuf_freelist->chunklen = 0;
	ret->wbuf_freelist->len = 0;
	ret->wbuf_freelist->head = NULL;
1975
#endif
1976 1977 1978 1979 1980 1981 1982 1983 1984
#ifndef OPENSSL_NO_ENGINE
	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));
D
Dr. Stephen Henson 已提交
1985 1986 1987 1988 1989 1990
	if (!eng)
		{
		ERR_clear_error();
		ENGINE_load_builtin_engines();
		eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
		}
1991 1992 1993 1994 1995
	if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
		ERR_clear_error();
	}
#endif
#endif
1996 1997 1998
	/* Default is to connect to non-RI servers. When RI is more widely
	 * deployed might change this.
	 */
1999
	ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2000

2001 2002 2003 2004 2005 2006 2007 2008
	return(ret);
err:
	SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
err2:
	if (ret != NULL) SSL_CTX_free(ret);
	return(NULL);
	}

U
Ulf Möller 已提交
2009
#if 0
B
Ben Laurie 已提交
2010
static void SSL_COMP_free(SSL_COMP *comp)
2011
    { OPENSSL_free(comp); }
U
Ulf Möller 已提交
2012
#endif
B
Ben Laurie 已提交
2013

2014
#ifndef OPENSSL_NO_BUF_FREELISTS
B
Ben Laurie 已提交
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
static void
ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
	{
	SSL3_BUF_FREELIST_ENTRY *ent, *next;
	for (ent = list->head; ent; ent = next)
		{
		next = ent->next;
		OPENSSL_free(ent);
		}
	OPENSSL_free(list);
	}
#endif

2028
void SSL_CTX_free(SSL_CTX *a)
2029 2030 2031 2032 2033 2034
	{
	int i;

	if (a == NULL) return;

	i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
2035 2036 2037
#ifdef REF_PRINT
	REF_PRINT("SSL_CTX",a);
#endif
2038 2039 2040 2041 2042 2043 2044 2045 2046
	if (i > 0) return;
#ifdef REF_CHECK
	if (i < 0)
		{
		fprintf(stderr,"SSL_CTX_free, bad reference count\n");
		abort(); /* ok */
		}
#endif

2047 2048 2049
	if (a->param)
		X509_VERIFY_PARAM_free(a->param);

2050 2051 2052 2053 2054 2055 2056 2057 2058
	/*
	 * 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].)
	 */
2059 2060
	if (a->sessions != NULL)
		SSL_CTX_flush_sessions(a,0);
2061 2062 2063 2064

	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);

	if (a->sessions != NULL)
B
Ben Laurie 已提交
2065
		lh_SSL_SESSION_free(a->sessions);
2066

2067 2068 2069
	if (a->cert_store != NULL)
		X509_STORE_free(a->cert_store);
	if (a->cipher_list != NULL)
B
Ben Laurie 已提交
2070
		sk_SSL_CIPHER_free(a->cipher_list);
2071
	if (a->cipher_list_by_id != NULL)
B
Ben Laurie 已提交
2072
		sk_SSL_CIPHER_free(a->cipher_list_by_id);
2073 2074
	if (a->cert != NULL)
		ssl_cert_free(a->cert);
2075
	if (a->client_CA != NULL)
B
Ben Laurie 已提交
2076
		sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
2077
	if (a->extra_certs != NULL)
B
Ben Laurie 已提交
2078
		sk_X509_pop_free(a->extra_certs,X509_free);
2079
#if 0 /* This should never be done, since it removes a global database */
2080
	if (a->comp_methods != NULL)
B
Ben Laurie 已提交
2081
		sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
2082 2083 2084
#else
	a->comp_methods = NULL;
#endif
2085

B
Ben Laurie 已提交
2086 2087 2088
        if (a->srtp_profiles)
                sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);

2089 2090 2091
#ifndef OPENSSL_NO_PSK
	if (a->psk_identity_hint)
		OPENSSL_free(a->psk_identity_hint);
2092
#endif
B
Ben Laurie 已提交
2093 2094 2095
#ifndef OPENSSL_NO_SRP
	SSL_CTX_SRP_CTX_free(a);
#endif
2096 2097 2098 2099
#ifndef OPENSSL_NO_TLSEXT
	OPENSSL_free(a->custom_cli_ext_records);
	OPENSSL_free(a->custom_srv_ext_records);
#endif
2100 2101 2102
#ifndef OPENSSL_NO_ENGINE
	if (a->client_cert_engine)
		ENGINE_finish(a->client_cert_engine);
2103
#endif
B
Ben Laurie 已提交
2104

2105
#ifndef OPENSSL_NO_BUF_FREELISTS
B
Ben Laurie 已提交
2106 2107 2108 2109
	if (a->wbuf_freelist)
		ssl_buf_freelist_free(a->wbuf_freelist);
	if (a->rbuf_freelist)
		ssl_buf_freelist_free(a->rbuf_freelist);
2110 2111 2112 2113 2114 2115 2116 2117
#endif
#ifndef OPENSSL_NO_TLSEXT
# ifndef OPENSSL_NO_EC
	if (a->tlsext_ecpointformatlist)
		OPENSSL_free(a->tlsext_ecpointformatlist);
	if (a->tlsext_ellipticcurvelist)
		OPENSSL_free(a->tlsext_ellipticcurvelist);
# endif /* OPENSSL_NO_EC */
B
Ben Laurie 已提交
2118 2119
#endif

2120
	OPENSSL_free(a);
2121 2122
	}

2123
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2124 2125 2126 2127
	{
	ctx->default_passwd_callback=cb;
	}

2128 2129 2130 2131 2132
void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
	{
	ctx->default_passwd_callback_userdata=u;
	}

2133
void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2134 2135
	{
	ctx->app_verify_callback=cb;
2136
	ctx->app_verify_arg=arg;
2137 2138
	}

2139
void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2140
	{
2141
	ctx->verify_mode=mode;
2142 2143 2144
	ctx->default_verify_callback=cb;
	}

2145 2146
void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
	{
2147
	X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2148 2149
	}

2150 2151 2152 2153 2154 2155 2156 2157 2158 2159
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);
	}

2160
void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2161 2162 2163 2164
	{
	CERT_PKEY *cpk;
	int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
	int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2165
	int rsa_tmp_export,dh_tmp_export,kl;
2166
	unsigned long mask_k,mask_a,emask_k,emask_a;
N
make  
Nils Larsch 已提交
2167 2168 2169 2170
	int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
#ifndef OPENSSL_NO_ECDH
	int have_ecdh_tmp;
#endif
B
Bodo Möller 已提交
2171 2172
	X509 *x = NULL;
	EVP_PKEY *ecc_pkey = NULL;
2173
	int signature_nid = 0, pk_nid = 0, md_nid = 0;
2174

B
Ben Laurie 已提交
2175
	if (c == NULL) return;
2176

2177 2178
	kl=SSL_C_EXPORT_PKEYLENGTH(cipher);

2179
#ifndef OPENSSL_NO_RSA
2180 2181
	rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
	rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2182
		(rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2183 2184 2185
#else
	rsa_tmp=rsa_tmp_export=0;
#endif
2186
#ifndef OPENSSL_NO_DH
2187 2188
	dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
	dh_tmp_export=(c->dh_tmp_cb != NULL ||
2189
		(dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2190 2191 2192 2193
#else
	dh_tmp=dh_tmp_export=0;
#endif

B
Bodo Möller 已提交
2194
#ifndef OPENSSL_NO_ECDH
2195
	have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
B
Bodo Möller 已提交
2196
#endif
2197
	cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2198
	rsa_enc= cpk->valid_flags & CERT_PKEY_VALID;
2199
	rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2200
	cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2201
	rsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2202
	cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2203
	dsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2204
	cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2205
	dh_rsa=  cpk->valid_flags & CERT_PKEY_VALID;
2206
	dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2207 2208
	cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
/* FIX THIS EAY EAY EAY */
2209
	dh_dsa=  cpk->valid_flags & CERT_PKEY_VALID;
2210
	dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
B
Bodo Möller 已提交
2211
	cpk= &(c->pkeys[SSL_PKEY_ECC]);
2212
	have_ecc_cert= cpk->valid_flags & CERT_PKEY_VALID;
2213 2214 2215 2216
	mask_k=0;
	mask_a=0;
	emask_k=0;
	emask_a=0;
2217

2218 2219
	

2220
#ifdef CIPHER_DEBUG
2221
	printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2222
	        rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
B
Ben Laurie 已提交
2223
		rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2224
#endif
2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235
	
	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;
	}
2236 2237

	if (rsa_enc || (rsa_tmp && rsa_sign))
2238
		mask_k|=SSL_kRSA;
B
Ben Laurie 已提交
2239
	if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2240
		emask_k|=SSL_kRSA;
2241 2242 2243

#if 0
	/* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2244
	if (	(dh_tmp || dh_rsa || dh_dsa) &&
2245
		(rsa_enc || rsa_sign || dsa_sign))
2246
		mask_k|=SSL_kEDH;
2247 2248
	if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
		(rsa_enc || rsa_sign || dsa_sign))
2249
		emask_k|=SSL_kEDH;
2250 2251
#endif

2252 2253
	if (dh_tmp_export)
		emask_k|=SSL_kEDH;
2254 2255

	if (dh_tmp)
2256
		mask_k|=SSL_kEDH;
2257

2258 2259
	if (dh_rsa) mask_k|=SSL_kDHr;
	if (dh_rsa_export) emask_k|=SSL_kDHr;
2260

2261 2262
	if (dh_dsa) mask_k|=SSL_kDHd;
	if (dh_dsa_export) emask_k|=SSL_kDHd;
2263

2264 2265 2266
	if (emask_k & (SSL_kDHr|SSL_kDHd))
		mask_a |= SSL_aDH;

2267 2268
	if (rsa_enc || rsa_sign)
		{
2269 2270
		mask_a|=SSL_aRSA;
		emask_a|=SSL_aRSA;
2271 2272 2273 2274
		}

	if (dsa_sign)
		{
2275 2276
		mask_a|=SSL_aDSS;
		emask_a|=SSL_aDSS;
2277 2278
		}

2279 2280
	mask_a|=SSL_aNULL;
	emask_a|=SSL_aNULL;
2281

2282
#ifndef OPENSSL_NO_KRB5
2283 2284 2285 2286
	mask_k|=SSL_kKRB5;
	mask_a|=SSL_aKRB5;
	emask_k|=SSL_kKRB5;
	emask_a|=SSL_aKRB5;
2287 2288
#endif

B
Bodo Möller 已提交
2289 2290 2291 2292 2293
	/* An ECC certificate may be usable for ECDH and/or
	 * ECDSA cipher suites depending on the key usage extension.
	 */
	if (have_ecc_cert)
		{
2294 2295
		cpk = &c->pkeys[SSL_PKEY_ECC];
		x = cpk->x509;
2296
		/* This call populates extension flags (ex_flags) */
B
Bodo Möller 已提交
2297 2298 2299 2300 2301
		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;
2302 2303
		if (!(cpk->valid_flags & CERT_PKEY_SIGN))
			ecdsa_ok = 0;
B
Bodo Möller 已提交
2304
		ecc_pkey = X509_get_pubkey(x);
2305
		ecc_pkey_size = (ecc_pkey != NULL) ?
B
Bodo Möller 已提交
2306 2307 2308
		    EVP_PKEY_bits(ecc_pkey) : 0;
		EVP_PKEY_free(ecc_pkey);
		if ((x->sig_alg) && (x->sig_alg->algorithm))
2309
			{
B
Bodo Möller 已提交
2310
			signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2311 2312
			OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
			}
B
Bodo Möller 已提交
2313 2314 2315
#ifndef OPENSSL_NO_ECDH
		if (ecdh_ok)
			{
2316 2317

			if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
B
Bodo Möller 已提交
2318
				{
2319 2320
				mask_k|=SSL_kECDHr;
				mask_a|=SSL_aECDH;
B
Bodo Möller 已提交
2321
				if (ecc_pkey_size <= 163)
2322 2323 2324 2325
					{
					emask_k|=SSL_kECDHr;
					emask_a|=SSL_aECDH;
					}
B
Bodo Möller 已提交
2326
				}
2327

2328
			if (pk_nid == NID_X9_62_id_ecPublicKey)
B
Bodo Möller 已提交
2329
				{
2330 2331
				mask_k|=SSL_kECDHe;
				mask_a|=SSL_aECDH;
B
Bodo Möller 已提交
2332
				if (ecc_pkey_size <= 163)
2333 2334 2335 2336
					{
					emask_k|=SSL_kECDHe;
					emask_a|=SSL_aECDH;
					}
B
Bodo Möller 已提交
2337 2338 2339 2340 2341 2342
				}
			}
#endif
#ifndef OPENSSL_NO_ECDSA
		if (ecdsa_ok)
			{
2343 2344
			mask_a|=SSL_aECDSA;
			emask_a|=SSL_aECDSA;
B
Bodo Möller 已提交
2345 2346 2347 2348 2349 2350 2351
			}
#endif
		}

#ifndef OPENSSL_NO_ECDH
	if (have_ecdh_tmp)
		{
2352 2353
		mask_k|=SSL_kEECDH;
		emask_k|=SSL_kEECDH;
B
Bodo Möller 已提交
2354 2355
		}
#endif
2356 2357

#ifndef OPENSSL_NO_PSK
2358 2359 2360 2361
	mask_k |= SSL_kPSK;
	mask_a |= SSL_aPSK;
	emask_k |= SSL_kPSK;
	emask_a |= SSL_aPSK;
2362 2363
#endif

2364 2365 2366 2367
	c->mask_k=mask_k;
	c->mask_a=mask_a;
	c->export_mask_k=emask_k;
	c->export_mask_a=emask_a;
2368 2369 2370
	c->valid=1;
	}

B
Bodo Möller 已提交
2371 2372 2373 2374
/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
#define ku_reject(x, usage) \
	(((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))

2375 2376
#ifndef OPENSSL_NO_EC

2377
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
B
Bodo Möller 已提交
2378
	{
2379
	unsigned long alg_k, alg_a;
B
Bodo Möller 已提交
2380 2381
	EVP_PKEY *pkey = NULL;
	int keysize = 0;
2382
	int signature_nid = 0, md_nid = 0, pk_nid = 0;
2383
	const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
B
Bodo Möller 已提交
2384

2385 2386 2387
	alg_k = cs->algorithm_mkey;
	alg_a = cs->algorithm_auth;

B
Bodo Möller 已提交
2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400
	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))
2401
		{
B
Bodo Möller 已提交
2402
		signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2403 2404
		OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
		}
2405
	if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
B
Bodo Möller 已提交
2406 2407 2408 2409
		{
		/* key usage, if present, must allow key agreement */
		if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
			{
2410
			SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
B
Bodo Möller 已提交
2411 2412
			return 0;
			}
2413
		if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
B
Bodo Möller 已提交
2414 2415
			{
			/* signature alg must be ECDSA */
2416
			if (pk_nid != NID_X9_62_id_ecPublicKey)
B
Bodo Möller 已提交
2417
				{
2418
				SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
B
Bodo Möller 已提交
2419 2420 2421
				return 0;
				}
			}
2422
		if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
B
Bodo Möller 已提交
2423 2424
			{
			/* signature alg must be RSA */
2425

2426
			if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2427 2428
				{
				SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2429
				return 0;
2430
				}
B
Bodo Möller 已提交
2431
			}
2432 2433
		}
	if (alg_a & SSL_aECDSA)
B
Bodo Möller 已提交
2434 2435 2436 2437
		{
		/* key usage, if present, must allow signing */
		if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
			{
2438
			SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
B
Bodo Möller 已提交
2439 2440 2441 2442 2443 2444 2445
			return 0;
			}
		}

	return 1;  /* all checks are ok */
	}

2446 2447
#endif

2448
static int ssl_get_server_cert_index(const SSL *s)
2449
	{
2450 2451 2452 2453 2454
	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)
B
Ben Laurie 已提交
2455
		SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX,ERR_R_INTERNAL_ERROR);
2456
	return idx;
B
Ben Laurie 已提交
2457 2458
	}

2459
CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
B
Ben Laurie 已提交
2460 2461 2462
	{
	CERT *c;
	int i;
B
Bodo Möller 已提交
2463

B
Ben Laurie 已提交
2464 2465 2466
	c = s->cert;
	ssl_set_cert_masks(c, s->s3->tmp.new_cipher);

2467 2468 2469 2470
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
	/* Broken protocol test: return last used certificate: which may
	 * mismatch the one expected.
	 */
D
Dr. Stephen Henson 已提交
2471
	if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2472 2473 2474
		return c->key;
#endif

B
Ben Laurie 已提交
2475 2476 2477 2478 2479 2480 2481 2482
	i = ssl_get_server_cert_index(s);

	/* This may or may not be an error. */
	if (i < 0)
		return NULL;

	/* May be NULL. */
	return &c->pkeys[i];
2483 2484
	}

2485
EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2486
	{
2487
	unsigned long alg_a;
2488
	CERT *c;
2489
	int idx = -1;
2490

2491
	alg_a = cipher->algorithm_auth;
2492 2493
	c=s->cert;

2494 2495 2496 2497
#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
	/* Broken protocol test: use last key: which may
	 * mismatch the one expected.
	 */
D
Dr. Stephen Henson 已提交
2498
	if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2499 2500 2501 2502
		idx = c->key - c->pkeys;
	else
#endif

2503
	if ((alg_a & SSL_aDSS) &&
2504
		(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2505
		idx = SSL_PKEY_DSA_SIGN;
2506
	else if (alg_a & SSL_aRSA)
2507 2508
		{
		if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2509
			idx = SSL_PKEY_RSA_SIGN;
2510
		else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2511
			idx = SSL_PKEY_RSA_ENC;
2512
		}
2513
	else if ((alg_a & SSL_aECDSA) &&
B
Bodo Möller 已提交
2514
	         (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2515 2516
		idx = SSL_PKEY_ECC;
	if (idx == -1)
2517
		{
B
Bodo Möller 已提交
2518
		SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2519 2520
		return(NULL);
		}
2521 2522 2523
	if (pmd)
		*pmd = c->pkeys[idx].digest;
	return c->pkeys[idx].privatekey;
2524 2525
	}

B
Ben Laurie 已提交
2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544
#ifndef OPENSSL_NO_TLSEXT
unsigned char *ssl_get_authz_data(SSL *s, size_t *authz_length)
	{
	CERT *c;
	int i;

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

	if (i == -1)
		return NULL;

	*authz_length = 0;
	if (c->pkeys[i].authz == NULL)
		return(NULL);
	*authz_length = c->pkeys[i].authz_length;

	return c->pkeys[i].authz;
	}
2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564

int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
				   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;
	}
B
Ben Laurie 已提交
2565 2566
#endif

2567
void ssl_update_cache(SSL *s,int mode)
2568
	{
2569 2570 2571 2572 2573 2574
	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;

B
Bodo Möller 已提交
2575
	i=s->session_ctx->session_cache_mode;
L
Lutz Jänicke 已提交
2576
	if ((i & mode) && (!s->hit)
2577
		&& ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
B
Bodo Möller 已提交
2578 2579
		    || SSL_CTX_add_session(s->session_ctx,s->session))
		&& (s->session_ctx->new_session_cb != NULL))
2580
		{
2581
		CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
B
Bodo Möller 已提交
2582
		if (!s->session_ctx->new_session_cb(s,s->session))
2583 2584 2585 2586
			SSL_SESSION_free(s->session);
		}

	/* auto flush every 255 connections */
2587 2588 2589 2590
	if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
		((i & mode) == mode))
		{
		if (  (((mode & SSL_SESS_CACHE_CLIENT)
B
Bodo Möller 已提交
2591 2592
			?s->session_ctx->stats.sess_connect_good
			:s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2593
			{
B
Bodo Möller 已提交
2594
			SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2595 2596
			}
		}
2597 2598
	}

2599
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2600 2601 2602 2603
	{
	return(s->method);
	}

2604
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630
	{
	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);
	}

B
Ben Laurie 已提交
2631
int SSL_get_error(const SSL *s,int i)
2632 2633
	{
	int reason;
2634
	unsigned long l;
2635 2636 2637 2638
	BIO *bio;

	if (i > 0) return(SSL_ERROR_NONE);

2639 2640 2641 2642 2643 2644 2645 2646 2647
	/* 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);
		}
2648 2649 2650 2651 2652 2653 2654

	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))
B
Bodo Möller 已提交
2655 2656 2657 2658 2659 2660 2661 2662 2663
			/* 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. */
2664 2665 2666 2667 2668 2669
			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);
2670 2671
			else if (reason == BIO_RR_ACCEPT)
				return(SSL_ERROR_WANT_ACCEPT);
2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682
			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))
B
Bodo Möller 已提交
2683
			/* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2684 2685 2686 2687 2688 2689
			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);
2690 2691
			else if (reason == BIO_RR_ACCEPT)
				return(SSL_ERROR_WANT_ACCEPT);
2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702
			else
				return(SSL_ERROR_SYSCALL);
			}
		}
	if ((i < 0) && SSL_want_x509_lookup(s))
		{
		return(SSL_ERROR_WANT_X509_LOOKUP);
		}

	if (i == 0)
		{
2703
		if (s->version == SSL2_VERSION)
2704 2705 2706 2707 2708 2709 2710
			{
			/* assume it is the socket being closed */
			return(SSL_ERROR_ZERO_RETURN);
			}
		else
			{
			if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2711
				(s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2712 2713 2714 2715 2716 2717
				return(SSL_ERROR_ZERO_RETURN);
			}
		}
	return(SSL_ERROR_SYSCALL);
	}

2718
int SSL_do_handshake(SSL *s)
2719
	{
2720 2721
	int ret=1;

2722 2723
	if (s->handshake_func == NULL)
		{
2724
		SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2725 2726
		return(-1);
		}
2727 2728 2729

	s->method->ssl_renegotiate_check(s);

2730
	if (SSL_in_init(s) || SSL_in_before(s))
2731 2732 2733 2734
		{
		ret=s->handshake_func(s);
		}
	return(ret);
2735 2736 2737 2738
	}

/* For the next 2 functions, SSL_clear() sets shutdown and so
 * one of these calls will reset it */
2739
void SSL_set_accept_state(SSL *s)
2740
	{
2741
	s->server=1;
2742 2743 2744 2745 2746
	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);
2747 2748
	ssl_clear_hash_ctx(&s->read_hash);
	ssl_clear_hash_ctx(&s->write_hash);
2749 2750
	}

2751
void SSL_set_connect_state(SSL *s)
2752
	{
2753
	s->server=0;
2754 2755 2756 2757 2758
	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);
2759 2760
	ssl_clear_hash_ctx(&s->read_hash);
	ssl_clear_hash_ctx(&s->write_hash);
2761 2762
	}

2763
int ssl_undefined_function(SSL *s)
2764 2765 2766 2767 2768
	{
	SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

2769 2770 2771 2772 2773 2774
int ssl_undefined_void_function(void)
	{
	SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

B
Ben Laurie 已提交
2775 2776 2777 2778 2779 2780
int ssl_undefined_const_function(const SSL *s)
	{
	SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

2781
SSL_METHOD *ssl_bad_method(int ver)
2782 2783 2784 2785 2786
	{
	SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(NULL);
	}

B
Ben Laurie 已提交
2787
const char *SSL_get_version(const SSL *s)
2788
	{
2789 2790 2791
	if (s->version == TLS1_2_VERSION)
		return("TLSv1.2");
	else if (s->version == TLS1_1_VERSION)
2792
		return("TLSv1.1");
D
Dr. Stephen Henson 已提交
2793 2794
	else if (s->version == TLS1_VERSION)
		return("TLSv1");
2795 2796
	else if (s->version == SSL3_VERSION)
		return("SSLv3");
2797
	else if (s->version == SSL2_VERSION)
2798 2799 2800 2801 2802
		return("SSLv2");
	else
		return("unknown");
	}

2803
SSL *SSL_dup(SSL *s)
2804
	{
B
Ben Laurie 已提交
2805
	STACK_OF(X509_NAME) *sk;
2806
	X509_NAME *xn;
2807
	SSL *ret;
2808
	int i;
2809
	
B
Ben Laurie 已提交
2810 2811
	if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
	    return(NULL);
2812 2813 2814 2815 2816

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

2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828
	if (s->session != NULL)
		{
		/* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
		SSL_copy_session_id(ret,s);
		}
	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. */

R
Richard Levitte 已提交
2829
		ret->method->ssl_free(ret);
2830 2831 2832 2833 2834
		ret->method = s->method;
		ret->method->ssl_new(ret);

		if (s->cert != NULL)
			{
2835 2836 2837 2838
			if (ret->cert != NULL)
				{
				ssl_cert_free(ret->cert);
				}
2839 2840 2841 2842 2843 2844 2845 2846
			ret->cert = ssl_cert_dup(s->cert);
			if (ret->cert == NULL)
				goto err;
			}
				
		SSL_set_session_id_context(ret,
			s->sid_ctx, s->sid_ctx_length);
		}
2847

2848 2849
	ret->options=s->options;
	ret->mode=s->mode;
2850
	SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2851
	SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2852 2853
	ret->msg_callback = s->msg_callback;
	ret->msg_callback_arg = s->msg_callback_arg;
2854 2855
	SSL_set_verify(ret,SSL_get_verify_mode(s),
		SSL_get_verify_callback(s));
2856
	SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2857
	ret->generate_session_id = s->generate_session_id;
2858 2859 2860 2861 2862 2863

	SSL_set_info_callback(ret,SSL_get_info_callback(s));
	
	ret->debug=s->debug;

	/* copy app data, a little dangerous perhaps */
2864
	if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2865
		goto err;
2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876

	/* 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)
			{
2877
			if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2878 2879 2880 2881 2882
				goto err;
			}
		else
			ret->wbio=ret->rbio;
		}
2883 2884 2885 2886
	ret->rwstate = s->rwstate;
	ret->in_handshake = s->in_handshake;
	ret->handshake_func = s->handshake_func;
	ret->server = s->server;
D
Dr. Stephen Henson 已提交
2887
	ret->renegotiate = s->renegotiate;
2888 2889 2890 2891 2892 2893 2894
	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 */
	ret->rstate=s->rstate;
	ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
	ret->hit=s->hit;
2895 2896

	X509_VERIFY_PARAM_inherit(ret->param, s->param);
2897 2898 2899 2900

	/* dup the cipher_list and cipher_list_by_id stacks */
	if (s->cipher_list != NULL)
		{
B
Ben Laurie 已提交
2901
		if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2902 2903 2904
			goto err;
		}
	if (s->cipher_list_by_id != NULL)
B
Ben Laurie 已提交
2905
		if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2906 2907 2908 2909 2910 2911
			== NULL)
			goto err;

	/* Dup the client_CA list */
	if (s->client_CA != NULL)
		{
B
Ben Laurie 已提交
2912
		if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2913
		ret->client_CA=sk;
B
Ben Laurie 已提交
2914
		for (i=0; i<sk_X509_NAME_num(sk); i++)
2915
			{
B
Ben Laurie 已提交
2916 2917
			xn=sk_X509_NAME_value(sk,i);
			if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933
				{
				X509_NAME_free(xn);
				goto err;
				}
			}
		}

	if (0)
		{
err:
		if (ret != NULL) SSL_free(ret);
		ret=NULL;
		}
	return(ret);
	}

2934
void ssl_clear_cipher_ctx(SSL *s)
2935
	{
2936 2937 2938
	if (s->enc_read_ctx != NULL)
		{
		EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2939
		OPENSSL_free(s->enc_read_ctx);
2940 2941 2942 2943 2944
		s->enc_read_ctx=NULL;
		}
	if (s->enc_write_ctx != NULL)
		{
		EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2945
		OPENSSL_free(s->enc_write_ctx);
2946 2947
		s->enc_write_ctx=NULL;
		}
2948
#ifndef OPENSSL_NO_COMP
2949 2950 2951 2952 2953 2954 2955 2956 2957 2958
	if (s->expand != NULL)
		{
		COMP_CTX_free(s->expand);
		s->expand=NULL;
		}
	if (s->compress != NULL)
		{
		COMP_CTX_free(s->compress);
		s->compress=NULL;
		}
2959
#endif
2960 2961
	}

2962
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
2963
X509 *SSL_get_certificate(const SSL *s)
2964 2965 2966 2967 2968 2969 2970
	{
	if (s->cert != NULL)
		return(s->cert->key->x509);
	else
		return(NULL);
	}

2971
/* Fix this function so that it takes an optional type parameter */
2972
EVP_PKEY *SSL_get_privatekey(SSL *s)
2973 2974 2975 2976 2977 2978 2979
	{
	if (s->cert != NULL)
		return(s->cert->key->privatekey);
	else
		return(NULL);
	}

2980
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2981
	{
2982 2983 2984
	if ((s->session != NULL) && (s->session->cipher != NULL))
		return(s->session->cipher);
	return(NULL);
2985
	}
2986 2987 2988 2989 2990 2991 2992 2993 2994 2995
#ifdef OPENSSL_NO_COMP
const void *SSL_get_current_compression(SSL *s)
	{
	return NULL;
	}
const void *SSL_get_current_expansion(SSL *s)
	{
	return NULL;
	}
#else
2996

2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009
const COMP_METHOD *SSL_get_current_compression(SSL *s)
	{
	if (s->compress != NULL)
		return(s->compress->meth);
	return(NULL);
	}

const COMP_METHOD *SSL_get_current_expansion(SSL *s)
	{
	if (s->expand != NULL)
		return(s->expand->meth);
	return(NULL);
	}
3010
#endif
3011

3012
int ssl_init_wbio_buffer(SSL *s,int push)
3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027
	{
	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);
		}
B
Bodo Möller 已提交
3028
	(void)BIO_reset(bbio);
3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046
/*	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);
	}
3047

3048
void ssl_free_wbio_buffer(SSL *s)
3049 3050 3051 3052 3053 3054
	{
	if (s->bbio == NULL) return;

	if (s->bbio == s->wbio)
		{
		/* remove buffering */
3055 3056 3057
		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);
3058
#endif
3059
	}
3060 3061 3062
	BIO_free(s->bbio);
	s->bbio=NULL;
	}
3063
	
3064
void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
3065 3066 3067 3068
	{
	ctx->quiet_shutdown=mode;
	}

B
Ben Laurie 已提交
3069
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3070 3071 3072 3073
	{
	return(ctx->quiet_shutdown);
	}

3074
void SSL_set_quiet_shutdown(SSL *s,int mode)
3075 3076 3077 3078
	{
	s->quiet_shutdown=mode;
	}

B
Ben Laurie 已提交
3079
int SSL_get_quiet_shutdown(const SSL *s)
3080 3081 3082 3083
	{
	return(s->quiet_shutdown);
	}

3084
void SSL_set_shutdown(SSL *s,int mode)
3085 3086 3087 3088
	{
	s->shutdown=mode;
	}

B
Ben Laurie 已提交
3089
int SSL_get_shutdown(const SSL *s)
3090 3091 3092 3093
	{
	return(s->shutdown);
	}

B
Ben Laurie 已提交
3094
int SSL_version(const SSL *s)
3095 3096 3097 3098
	{
	return(s->version);
	}

B
Ben Laurie 已提交
3099
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3100 3101 3102 3103
	{
	return(ssl->ctx);
	}

3104 3105
SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
	{
3106
	if (ssl->ctx == ctx)
B
Bodo Möller 已提交
3107
		return ssl->ctx;
3108
#ifndef OPENSSL_NO_TLSEXT
B
Bodo Möller 已提交
3109 3110
	if (ctx == NULL)
		ctx = ssl->initial_ctx;
3111
#endif
3112 3113 3114 3115 3116 3117 3118 3119 3120 3121
	if (ssl->cert != NULL)
		ssl_cert_free(ssl->cert);
	ssl->cert = ssl_cert_dup(ctx->cert);
	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
	if (ssl->ctx != NULL)
		SSL_CTX_free(ssl->ctx); /* decrement reference count */
	ssl->ctx = ctx;
	return(ssl->ctx);
	}

3122
#ifndef OPENSSL_NO_STDIO
3123
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3124 3125 3126 3127
	{
	return(X509_STORE_set_default_paths(ctx->cert_store));
	}

3128 3129
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
		const char *CApath)
3130 3131 3132
	{
	return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
	}
3133
#endif
3134

B
Ben Laurie 已提交
3135
void SSL_set_info_callback(SSL *ssl,
N
Nils Larsch 已提交
3136
	void (*cb)(const SSL *ssl,int type,int val))
3137 3138 3139 3140
	{
	ssl->info_callback=cb;
	}

3141 3142
/* One compiler (Diab DCC) doesn't like argument names in returned
   function pointer.  */
3143
void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
3144
	{
B
Ben Laurie 已提交
3145
	return ssl->info_callback;
3146 3147
	}

B
Ben Laurie 已提交
3148
int SSL_state(const SSL *ssl)
3149 3150 3151 3152
	{
	return(ssl->state);
	}

3153 3154 3155 3156 3157
void SSL_set_state(SSL *ssl, int state)
	{
	ssl->state = state;
	}

3158
void SSL_set_verify_result(SSL *ssl,long arg)
3159 3160 3161 3162
	{
	ssl->verify_result=arg;
	}

B
Ben Laurie 已提交
3163
long SSL_get_verify_result(const SSL *ssl)
3164 3165 3166 3167
	{
	return(ssl->verify_result);
	}

D
 
Dr. Stephen Henson 已提交
3168 3169
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)
3170
	{
3171 3172
	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
				new_func, dup_func, free_func);
3173
	}
3174

3175
int SSL_set_ex_data(SSL *s,int idx,void *arg)
3176 3177 3178 3179
	{
	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
	}

B
Ben Laurie 已提交
3180
void *SSL_get_ex_data(const SSL *s,int idx)
3181 3182 3183 3184
	{
	return(CRYPTO_get_ex_data(&s->ex_data,idx));
	}

D
 
Dr. Stephen Henson 已提交
3185 3186
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)
3187
	{
3188 3189
	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
				new_func, dup_func, free_func);
3190
	}
3191

3192
int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3193 3194 3195 3196
	{
	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
	}

B
Ben Laurie 已提交
3197
void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3198 3199 3200 3201
	{
	return(CRYPTO_get_ex_data(&s->ex_data,idx));
	}

3202
int ssl_ok(SSL *s)
3203 3204 3205 3206
	{
	return(1);
	}

B
Ben Laurie 已提交
3207
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3208 3209 3210 3211
	{
	return(ctx->cert_store);
	}

3212
void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3213 3214 3215 3216 3217 3218
	{
	if (ctx->cert_store != NULL)
		X509_STORE_free(ctx->cert_store);
	ctx->cert_store=store;
	}

B
Ben Laurie 已提交
3219
int SSL_want(const SSL *s)
3220 3221 3222 3223
	{
	return(s->rwstate);
	}

3224 3225 3226 3227 3228 3229
/*!
 * \brief Set the callback for generating temporary RSA keys.
 * \param ctx the SSL context.
 * \param cb the callback
 */

3230
#ifndef OPENSSL_NO_RSA
U
Ulf Möller 已提交
3231 3232
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
							  int is_export,
3233
							  int keylength))
3234
    {
3235
    SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3236
    }
3237

3238 3239 3240
void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
						  int is_export,
						  int keylength))
3241
    {
3242
    SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3243
    }
3244
#endif
3245

3246 3247 3248 3249
#ifdef DOXYGEN
/*!
 * \brief The RSA temporary key callback function.
 * \param ssl the SSL session.
U
Ulf Möller 已提交
3250 3251 3252
 * \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.
3253 3254 3255 3256
 * \return the temporary RSA key.
 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
 */

U
Ulf Möller 已提交
3257
RSA *cb(SSL *ssl,int is_export,int keylength)
3258 3259 3260 3261 3262 3263 3264 3265 3266
    {}
#endif

/*!
 * \brief Set the callback for generating temporary DH keys.
 * \param ctx the SSL context.
 * \param dh the callback
 */

3267
#ifndef OPENSSL_NO_DH
U
Ulf Möller 已提交
3268
void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3269
                                                        int keylength))
3270
	{
3271
	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3272
	}
3273

U
Ulf Möller 已提交
3274
void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3275
                                                int keylength))
3276
	{
3277
	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3278
	}
3279
#endif
3280

B
Bodo Möller 已提交
3281 3282
#ifndef OPENSSL_NO_ECDH
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3283
                                                                int keylength))
B
Bodo Möller 已提交
3284
	{
3285
	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
B
Bodo Möller 已提交
3286 3287 3288
	}

void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3289
                                                        int keylength))
B
Bodo Möller 已提交
3290
	{
3291
	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
B
Bodo Möller 已提交
3292 3293 3294
	}
#endif

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#ifndef OPENSSL_NO_PSK
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
	{
	if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
		{
		SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
		return 0;
		}
	if (ctx->psk_identity_hint != NULL)
		OPENSSL_free(ctx->psk_identity_hint);
	if (identity_hint != NULL)
		{
		ctx->psk_identity_hint = BUF_strdup(identity_hint);
		if (ctx->psk_identity_hint == NULL)
			return 0;
		}
	else
		ctx->psk_identity_hint = NULL;
	return 1;
	}

int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
	{
	if (s == NULL)
		return 0;

	if (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;
		}
	if (s->session->psk_identity_hint != NULL)
		OPENSSL_free(s->session->psk_identity_hint);
	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;
	}

const char *SSL_get_psk_identity_hint(const SSL *s)
	{
	if (s == NULL || s->session == NULL)
		return NULL;
	return(s->session->psk_identity_hint);
	}

const char *SSL_get_psk_identity(const SSL *s)
	{
	if (s == NULL || s->session == NULL)
		return NULL;
	return(s->session->psk_identity);
	}
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void SSL_set_psk_client_callback(SSL *s,
    unsigned int (*cb)(SSL *ssl, const char *hint,
                       char *identity, unsigned int max_identity_len, unsigned char *psk,
                       unsigned int max_psk_len))
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	{
3361
	s->psk_client_callback = cb;
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	}

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
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    unsigned int (*cb)(SSL *ssl, const char *hint,
                       char *identity, unsigned int max_identity_len, unsigned char *psk,
                       unsigned int max_psk_len))
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	{
3369
	ctx->psk_client_callback = cb;
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	}

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void SSL_set_psk_server_callback(SSL *s,
    unsigned int (*cb)(SSL *ssl, const char *identity,
                       unsigned char *psk, unsigned int max_psk_len))
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	{
3376
	s->psk_server_callback = cb;
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	}

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
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    unsigned int (*cb)(SSL *ssl, const char *identity,
                       unsigned char *psk, unsigned int max_psk_len))
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	{
3383
	ctx->psk_server_callback = cb;
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	}
3385
#endif
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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))
	{
3389
	SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
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	}
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))
	{
3393
	SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3394 3395
	}

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void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
	int (*cb)(SSL *ssl, int is_forward_secure))
	{
	SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
		(void (*)(void))cb);
	}
void SSL_set_not_resumable_session_callback(SSL *ssl,
	int (*cb)(SSL *ssl, int is_forward_secure))
	{
	SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
		(void (*)(void))cb);
	}

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/* 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;
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 */
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EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 
{
	ssl_clear_hash_ctx(hash);
	*hash = EVP_MD_CTX_create();
	if (md) EVP_DigestInit_ex(*hash,md,NULL);
	return *hash;
}
void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 
{

	if (*hash) EVP_MD_CTX_destroy(*hash);
	*hash=NULL;
}
3428

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void SSL_set_debug(SSL *s, int debug)
	{
	s->debug = debug;
	}

int SSL_cache_hit(SSL *s)
	{
	return s->hit;
	}

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int SSL_is_server(SSL *s)
	{
	return s->server;
	}

3444
#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3445 3446
#include "../crypto/bio/bss_file.c"
#endif
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IMPLEMENT_STACK_OF(SSL_CIPHER)
IMPLEMENT_STACK_OF(SSL_COMP)
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IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
				    ssl_cipher_id);