ssl_lib.c 82.9 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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163
const char *SSL_version_str=OPENSSL_VERSION_TEXT;
164

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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),
		meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
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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
	{
510
	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
	{
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	int i;

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	if(s == NULL)
	    return;

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	i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
#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 1116
		if (SSL_version(s) == DTLS1_VERSION ||
		    SSL_version(s) == DTLS1_BAD_VER)
B
Ben Laurie 已提交
1117 1118 1119 1120 1121
			{
			s->d1->mtu = larg;
			return larg;
			}
		return 0;
1122 1123 1124 1125 1126
	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;
1127 1128 1129 1130
	case SSL_CTRL_GET_RI_SUPPORT:
		if (s->s3)
			return s->s3->send_connection_binding;
		else return 0;
1131 1132 1133 1134
	case SSL_CTRL_CERT_FLAGS:
		return(s->cert->cert_flags|=larg);
	case SSL_CTRL_CLEAR_CERT_FLAGS:
		return(s->cert->cert_flags &=~larg);
1135 1136 1137
	default:
		return(s->method->ssl_ctrl(s,cmd,larg,parg));
		}
1138 1139
	}

1140
long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1141 1142 1143
	{
	switch(cmd)
		{
1144
	case SSL_CTRL_SET_MSG_CALLBACK:
1145
		s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1146 1147
		return 1;
		
1148 1149 1150 1151 1152
	default:
		return(s->method->ssl_callback_ctrl(s,cmd,fp));
		}
	}

B
Ben Laurie 已提交
1153
LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1154 1155 1156 1157
	{
	return ctx->sessions;
	}

1158
long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1159
	{
1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
	long l;

	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);
1170 1171 1172 1173 1174
		
	case SSL_CTRL_SET_MSG_CALLBACK_ARG:
		ctx->msg_callback_arg = parg;
		return 1;

1175 1176 1177 1178 1179 1180
	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);
1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195

	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
1196
		return(lh_SSL_SESSION_num_items(ctx->sessions));
1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220
	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);
1221 1222
	case SSL_CTRL_CLEAR_OPTIONS:
		return(ctx->options&=~larg);
1223 1224
	case SSL_CTRL_MODE:
		return(ctx->mode|=larg);
1225 1226
	case SSL_CTRL_CLEAR_MODE:
		return(ctx->mode&=~larg);
1227 1228 1229 1230 1231
	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;
1232 1233 1234 1235
	case SSL_CTRL_CERT_FLAGS:
		return(ctx->cert->cert_flags|=larg);
	case SSL_CTRL_CLEAR_CERT_FLAGS:
		return(ctx->cert->cert_flags &=~larg);
1236 1237 1238
	default:
		return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
		}
1239 1240
	}

1241
long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1242 1243 1244
	{
	switch(cmd)
		{
1245
	case SSL_CTRL_SET_MSG_CALLBACK:
1246
		ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1247 1248
		return 1;

1249 1250 1251 1252 1253
	default:
		return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
		}
	}

1254
int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
	{
	long l;

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

1265 1266
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
			const SSL_CIPHER * const *bp)
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
	{
	long l;

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

1277
/** return a STACK of the ciphers available for the SSL and in order of
1278
 * preference */
B
Ben Laurie 已提交
1279
STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1280
	{
1281
	if (s != NULL)
1282
		{
1283 1284 1285 1286 1287 1288 1289 1290 1291
		if (s->cipher_list != NULL)
			{
			return(s->cipher_list);
			}
		else if ((s->ctx != NULL) &&
			(s->ctx->cipher_list != NULL))
			{
			return(s->ctx->cipher_list);
			}
1292 1293 1294 1295
		}
	return(NULL);
	}

1296
/** return a STACK of the ciphers available for the SSL and in order of
1297
 * algorithm id */
B
Ben Laurie 已提交
1298
STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1299
	{
1300
	if (s != NULL)
1301
		{
1302 1303 1304 1305 1306 1307 1308 1309 1310
		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);
			}
1311 1312 1313 1314
		}
	return(NULL);
	}

1315
/** The old interface to get the same thing as SSL_get_ciphers() */
B
Ben Laurie 已提交
1316
const char *SSL_get_cipher_list(const SSL *s,int n)
1317 1318
	{
	SSL_CIPHER *c;
B
Ben Laurie 已提交
1319
	STACK_OF(SSL_CIPHER) *sk;
1320 1321 1322

	if (s == NULL) return(NULL);
	sk=SSL_get_ciphers(s);
B
Ben Laurie 已提交
1323
	if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1324
		return(NULL);
B
Ben Laurie 已提交
1325
	c=sk_SSL_CIPHER_value(sk,n);
1326 1327 1328 1329
	if (c == NULL) return(NULL);
	return(c->name);
	}

1330
/** specify the ciphers to be used by default by the SSL_CTX */
1331
int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1332
	{
B
Ben Laurie 已提交
1333
	STACK_OF(SSL_CIPHER) *sk;
1334 1335 1336
	
	sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
		&ctx->cipher_list_by_id,str);
1337 1338 1339
	/* 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
1340 1341
	 * has been disabled). This is not an error as far as
	 * ssl_create_cipher_list is concerned, and hence
1342 1343 1344 1345 1346 1347 1348 1349 1350 1351
	 * 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;
1352 1353
	}

1354
/** specify the ciphers to be used by the SSL */
1355
int SSL_set_cipher_list(SSL *s,const char *str)
1356
	{
B
Ben Laurie 已提交
1357
	STACK_OF(SSL_CIPHER) *sk;
1358 1359 1360
	
	sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
		&s->cipher_list_by_id,str);
1361 1362 1363 1364 1365 1366 1367 1368 1369
	/* 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;
1370 1371 1372
	}

/* works well for SSLv2, not so good for SSLv3 */
B
Ben Laurie 已提交
1373
char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1374
	{
B
Ben Laurie 已提交
1375
	char *p;
B
Ben Laurie 已提交
1376
	STACK_OF(SSL_CIPHER) *sk;
1377 1378 1379 1380 1381 1382 1383 1384 1385
	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
1386
	for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1387
		{
1388 1389
		int n;

B
Ben Laurie 已提交
1390
		c=sk_SSL_CIPHER_value(sk,i);
1391 1392
		n=strlen(c->name);
		if (n+1 > len)
1393
			{
1394 1395 1396 1397
			if (p != buf)
				--p;
			*p='\0';
			return buf;
1398
			}
1399 1400
		strcpy(p,c->name);
		p+=n;
1401
		*(p++)=':';
1402
		len-=n+1;
1403 1404 1405 1406 1407
		}
	p[-1]='\0';
	return(buf);
	}

1408
int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1409
			     int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1410 1411 1412
	{
	int i,j=0;
	SSL_CIPHER *c;
1413
	CERT *ct = s->cert;
1414
	unsigned char *q;
1415 1416
	/* Set disabled masks for this session */
	ssl_set_client_disabled(s);
1417 1418 1419 1420

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

B
Ben Laurie 已提交
1421
	for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1422
		{
B
Ben Laurie 已提交
1423
		c=sk_SSL_CIPHER_value(sk,i);
1424 1425 1426 1427
		/* Skip disabled ciphers */
		if (c->algorithm_ssl & ct->mask_ssl ||
			c->algorithm_mkey & ct->mask_k ||
			c->algorithm_auth & ct->mask_a)
1428
			continue;
1429
		j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1430 1431
		p+=j;
		}
1432
	/* If p == q, no ciphers and caller indicates an error. Otherwise
D
Dr. Stephen Henson 已提交
1433
	 * add SCSV if not renegotiating.
1434
	 */
D
Dr. Stephen Henson 已提交
1435
	if (p != q && !s->renegotiate)
1436
		{
D
Typo  
Dr. Stephen Henson 已提交
1437
		static SSL_CIPHER scsv =
1438
			{
1439
			0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1440
			};
D
Typo  
Dr. Stephen Henson 已提交
1441
		j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1442 1443
		p+=j;
#ifdef OPENSSL_RI_DEBUG
1444
		fprintf(stderr, "SCSV sent by client\n");
1445 1446 1447
#endif
		}

1448 1449 1450
	return(p-q);
	}

B
Ben Laurie 已提交
1451 1452
STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
					       STACK_OF(SSL_CIPHER) **skp)
1453
	{
1454
	const SSL_CIPHER *c;
B
Ben Laurie 已提交
1455
	STACK_OF(SSL_CIPHER) *sk;
1456
	int i,n;
D
Dr. Stephen Henson 已提交
1457 1458
	if (s->s3)
		s->s3->send_connection_binding = 0;
1459

1460 1461 1462 1463 1464 1465 1466
	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))
1467
		sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1468 1469 1470
	else
		{
		sk= *skp;
B
Ben Laurie 已提交
1471
		sk_SSL_CIPHER_zero(sk);
1472 1473 1474 1475
		}

	for (i=0; i<num; i+=n)
		{
1476
		/* Check for SCSV */
D
Dr. Stephen Henson 已提交
1477
		if (s->s3 && (n != 3 || !p[0]) &&
1478 1479
			(p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
			(p[n-1] == (SSL3_CK_SCSV & 0xff)))
1480
			{
1481
			/* SCSV fatal if renegotiating */
D
Dr. Stephen Henson 已提交
1482
			if (s->renegotiate)
1483 1484 1485 1486 1487
				{
				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;
				}
1488 1489 1490
			s->s3->send_connection_binding = 1;
			p += n;
#ifdef OPENSSL_RI_DEBUG
1491
			fprintf(stderr, "SCSV received by server\n");
1492 1493 1494 1495
#endif
			continue;
			}

1496 1497 1498 1499
		c=ssl_get_cipher_by_char(s,p);
		p+=n;
		if (c != NULL)
			{
B
Ben Laurie 已提交
1500
			if (!sk_SSL_CIPHER_push(sk,c))
1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512
				{
				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
1513
		sk_SSL_CIPHER_free(sk);
1514 1515 1516
	return(NULL);
	}

1517

D
Typo.  
Dr. Stephen Henson 已提交
1518
#ifndef OPENSSL_NO_TLSEXT
1519
/** return a servername extension value if provided in Client Hello, or NULL.
1520
 * So far, only host_name types are defined (RFC 3546).
1521 1522
 */

1523 1524 1525
const char *SSL_get_servername(const SSL *s, const int type)
	{
	if (type != TLSEXT_NAMETYPE_host_name)
1526
		return NULL;
B
Bodo Möller 已提交
1527 1528

	return s->session && !s->tlsext_hostname ?
1529 1530 1531
		s->session->tlsext_hostname :
		s->tlsext_hostname;
	}
1532

1533 1534
int SSL_get_servername_type(const SSL *s)
	{
1535
	if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1536
		return TLSEXT_NAMETYPE_host_name;
1537
	return -1;
1538
	}
B
Ben Laurie 已提交
1539

B
Ben Laurie 已提交
1540
# ifndef OPENSSL_NO_NEXTPROTONEG
B
Ben Laurie 已提交
1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 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
/* 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
1656
#endif
1657

1658 1659 1660
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
1661 1662 1663 1664 1665 1666 1667 1668 1669
	{
	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
1670
static unsigned long ssl_session_hash(const SSL_SESSION *a)
1671 1672 1673
	{
	unsigned long l;

1674 1675 1676 1677 1678
	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);
1679 1680 1681
	return(l);
	}

1682 1683 1684 1685 1686
/* 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
1687
static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1688
	{
1689 1690 1691 1692 1693
	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));
1694 1695
	}

1696 1697 1698 1699
/* 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
1700 1701
static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1702

1703
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1704
	{
1705
	SSL_CTX *ret=NULL;
B
Ben Laurie 已提交
1706

1707 1708 1709 1710 1711
	if (meth == NULL)
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
		return(NULL);
		}
1712

1713 1714 1715 1716 1717 1718 1719 1720
#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

1721 1722 1723 1724 1725
	if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
		goto err;
		}
1726
	ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1727 1728 1729 1730 1731 1732 1733 1734 1735
	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;
1736 1737 1738
	ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
	ret->session_cache_head=NULL;
	ret->session_cache_tail=NULL;
1739 1740 1741 1742

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

1743 1744 1745 1746
	ret->new_session_cb=0;
	ret->remove_session_cb=0;
	ret->get_session_cb=0;
	ret->generate_session_id=0;
1747

1748
	memset((char *)&ret->stats,0,sizeof(ret->stats));
1749 1750 1751 1752 1753 1754 1755 1756 1757 1758

	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
1759
	ret->info_callback=NULL;
1760

1761
	ret->app_verify_callback=0;
1762 1763
	ret->app_verify_arg=NULL;

1764
	ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1765
	ret->read_ahead=0;
1766 1767
	ret->msg_callback=0;
	ret->msg_callback_arg=NULL;
1768
	ret->verify_mode=SSL_VERIFY_NONE;
1769
#if 0
1770
	ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1771
#endif
1772
	ret->sid_ctx_length=0;
1773
	ret->default_verify_callback=NULL;
1774
	if ((ret->cert=ssl_cert_new()) == NULL)
1775 1776
		goto err;

1777
	ret->default_passwd_callback=0;
1778
	ret->default_passwd_callback_userdata=NULL;
1779
	ret->client_cert_cb=0;
1780 1781
	ret->app_gen_cookie_cb=0;
	ret->app_verify_cookie_cb=0;
1782

B
Ben Laurie 已提交
1783
	ret->sessions=lh_SSL_SESSION_new();
1784 1785 1786 1787 1788 1789
	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,
1790
		meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
B
Ben Laurie 已提交
1791 1792
	if (ret->cipher_list == NULL
	    || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1793 1794 1795 1796 1797
		{
		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
		goto err2;
		}

1798 1799 1800 1801
	ret->param = X509_VERIFY_PARAM_new();
	if (!ret->param)
		goto err;

1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817
	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
1818
	if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1819 1820
		goto err;

1821
	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1822

1823
	ret->extra_certs=NULL;
1824
	ret->comp_methods=SSL_COMP_get_compression_methods();
1825

1826 1827
	ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;

1828
#ifndef OPENSSL_NO_TLSEXT
1829
	ret->tlsext_servername_callback = 0;
1830
	ret->tlsext_servername_arg = NULL;
1831 1832 1833 1834 1835 1836
	/* 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;

1837 1838 1839
	ret->tlsext_status_cb = 0;
	ret->tlsext_status_arg = NULL;

B
Ben Laurie 已提交
1840
# ifndef OPENSSL_NO_NEXTPROTONEG
B
Ben Laurie 已提交
1841 1842 1843
	ret->next_protos_advertised_cb = 0;
	ret->next_proto_select_cb = 0;
# endif
1844 1845 1846 1847 1848
#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
1849
#endif
B
Ben Laurie 已提交
1850 1851 1852
#ifndef OPENSSL_NO_SRP
	SSL_CTX_SRP_CTX_init(ret);
#endif
1853
#ifndef OPENSSL_NO_BUF_FREELISTS
B
Ben Laurie 已提交
1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869
	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;
1870
#endif
1871 1872 1873 1874 1875 1876 1877 1878 1879
#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
1880 1881 1882 1883 1884 1885
	if (!eng)
		{
		ERR_clear_error();
		ENGINE_load_builtin_engines();
		eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
		}
1886 1887 1888 1889 1890
	if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
		ERR_clear_error();
	}
#endif
#endif
1891 1892 1893
	/* Default is to connect to non-RI servers. When RI is more widely
	 * deployed might change this.
	 */
1894
	ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1895

1896 1897 1898 1899 1900 1901 1902 1903
	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
1904
#if 0
B
Ben Laurie 已提交
1905
static void SSL_COMP_free(SSL_COMP *comp)
1906
    { OPENSSL_free(comp); }
U
Ulf Möller 已提交
1907
#endif
B
Ben Laurie 已提交
1908

1909
#ifndef OPENSSL_NO_BUF_FREELISTS
B
Ben Laurie 已提交
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922
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

1923
void SSL_CTX_free(SSL_CTX *a)
1924 1925 1926 1927 1928 1929
	{
	int i;

	if (a == NULL) return;

	i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1930 1931 1932
#ifdef REF_PRINT
	REF_PRINT("SSL_CTX",a);
#endif
1933 1934 1935 1936 1937 1938 1939 1940 1941
	if (i > 0) return;
#ifdef REF_CHECK
	if (i < 0)
		{
		fprintf(stderr,"SSL_CTX_free, bad reference count\n");
		abort(); /* ok */
		}
#endif

1942 1943 1944
	if (a->param)
		X509_VERIFY_PARAM_free(a->param);

1945 1946 1947 1948 1949 1950 1951 1952 1953
	/*
	 * 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].)
	 */
1954 1955
	if (a->sessions != NULL)
		SSL_CTX_flush_sessions(a,0);
1956 1957 1958 1959

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

	if (a->sessions != NULL)
B
Ben Laurie 已提交
1960
		lh_SSL_SESSION_free(a->sessions);
1961

1962 1963 1964
	if (a->cert_store != NULL)
		X509_STORE_free(a->cert_store);
	if (a->cipher_list != NULL)
B
Ben Laurie 已提交
1965
		sk_SSL_CIPHER_free(a->cipher_list);
1966
	if (a->cipher_list_by_id != NULL)
B
Ben Laurie 已提交
1967
		sk_SSL_CIPHER_free(a->cipher_list_by_id);
1968 1969
	if (a->cert != NULL)
		ssl_cert_free(a->cert);
1970
	if (a->client_CA != NULL)
B
Ben Laurie 已提交
1971
		sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1972
	if (a->extra_certs != NULL)
B
Ben Laurie 已提交
1973
		sk_X509_pop_free(a->extra_certs,X509_free);
1974
#if 0 /* This should never be done, since it removes a global database */
1975
	if (a->comp_methods != NULL)
B
Ben Laurie 已提交
1976
		sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1977 1978 1979
#else
	a->comp_methods = NULL;
#endif
1980

B
Ben Laurie 已提交
1981 1982 1983
        if (a->srtp_profiles)
                sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);

1984 1985 1986
#ifndef OPENSSL_NO_PSK
	if (a->psk_identity_hint)
		OPENSSL_free(a->psk_identity_hint);
1987
#endif
B
Ben Laurie 已提交
1988 1989 1990
#ifndef OPENSSL_NO_SRP
	SSL_CTX_SRP_CTX_free(a);
#endif
1991 1992 1993
#ifndef OPENSSL_NO_ENGINE
	if (a->client_cert_engine)
		ENGINE_finish(a->client_cert_engine);
1994
#endif
B
Ben Laurie 已提交
1995

1996
#ifndef OPENSSL_NO_BUF_FREELISTS
B
Ben Laurie 已提交
1997 1998 1999 2000
	if (a->wbuf_freelist)
		ssl_buf_freelist_free(a->wbuf_freelist);
	if (a->rbuf_freelist)
		ssl_buf_freelist_free(a->rbuf_freelist);
2001 2002 2003 2004 2005 2006 2007 2008
#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
2009 2010
#endif

2011
	OPENSSL_free(a);
2012 2013
	}

2014
void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2015 2016 2017 2018
	{
	ctx->default_passwd_callback=cb;
	}

2019 2020 2021 2022 2023
void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
	{
	ctx->default_passwd_callback_userdata=u;
	}

2024
void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2025 2026
	{
	ctx->app_verify_callback=cb;
2027
	ctx->app_verify_arg=arg;
2028 2029
	}

2030
void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2031
	{
2032
	ctx->verify_mode=mode;
2033 2034 2035
	ctx->default_verify_callback=cb;
	}

2036 2037
void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
	{
2038
	X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2039 2040
	}

2041 2042 2043 2044 2045 2046 2047 2048 2049 2050
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);
	}

2051
void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2052 2053 2054 2055
	{
	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;
2056
	int rsa_tmp_export,dh_tmp_export,kl;
2057
	unsigned long mask_k,mask_a,emask_k,emask_a;
N
make  
Nils Larsch 已提交
2058 2059 2060 2061
	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
2062 2063
	X509 *x = NULL;
	EVP_PKEY *ecc_pkey = NULL;
2064
	int signature_nid = 0, pk_nid = 0, md_nid = 0;
2065

B
Ben Laurie 已提交
2066
	if (c == NULL) return;
2067

2068 2069
	kl=SSL_C_EXPORT_PKEYLENGTH(cipher);

2070
#ifndef OPENSSL_NO_RSA
2071 2072
	rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
	rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2073
		(rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2074 2075 2076
#else
	rsa_tmp=rsa_tmp_export=0;
#endif
2077
#ifndef OPENSSL_NO_DH
2078 2079
	dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
	dh_tmp_export=(c->dh_tmp_cb != NULL ||
2080
		(dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2081 2082 2083 2084
#else
	dh_tmp=dh_tmp_export=0;
#endif

B
Bodo Möller 已提交
2085
#ifndef OPENSSL_NO_ECDH
2086
	have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
B
Bodo Möller 已提交
2087
#endif
2088
	cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2089
	rsa_enc= cpk->valid_flags & CERT_PKEY_VALID;
2090
	rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2091
	cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2092
	rsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2093
	cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2094
	dsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2095
	cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2096
	dh_rsa=  cpk->valid_flags & CERT_PKEY_VALID;
2097
	dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2098 2099
	cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
/* FIX THIS EAY EAY EAY */
2100
	dh_dsa=  cpk->valid_flags & CERT_PKEY_VALID;
2101
	dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
B
Bodo Möller 已提交
2102
	cpk= &(c->pkeys[SSL_PKEY_ECC]);
2103
	have_ecc_cert= cpk->valid_flags & CERT_PKEY_VALID;
2104 2105 2106 2107
	mask_k=0;
	mask_a=0;
	emask_k=0;
	emask_a=0;
2108

2109 2110
	

2111
#ifdef CIPHER_DEBUG
2112
	printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2113
	        rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
B
Ben Laurie 已提交
2114
		rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2115
#endif
2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126
	
	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;
	}
2127 2128

	if (rsa_enc || (rsa_tmp && rsa_sign))
2129
		mask_k|=SSL_kRSA;
B
Ben Laurie 已提交
2130
	if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2131
		emask_k|=SSL_kRSA;
2132 2133 2134

#if 0
	/* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2135
	if (	(dh_tmp || dh_rsa || dh_dsa) &&
2136
		(rsa_enc || rsa_sign || dsa_sign))
2137
		mask_k|=SSL_kEDH;
2138 2139
	if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
		(rsa_enc || rsa_sign || dsa_sign))
2140
		emask_k|=SSL_kEDH;
2141 2142
#endif

2143 2144
	if (dh_tmp_export)
		emask_k|=SSL_kEDH;
2145 2146

	if (dh_tmp)
2147
		mask_k|=SSL_kEDH;
2148

2149 2150
	if (dh_rsa) mask_k|=SSL_kDHr;
	if (dh_rsa_export) emask_k|=SSL_kDHr;
2151

2152 2153
	if (dh_dsa) mask_k|=SSL_kDHd;
	if (dh_dsa_export) emask_k|=SSL_kDHd;
2154

2155 2156 2157
	if (emask_k & (SSL_kDHr|SSL_kDHd))
		mask_a |= SSL_aDH;

2158 2159
	if (rsa_enc || rsa_sign)
		{
2160 2161
		mask_a|=SSL_aRSA;
		emask_a|=SSL_aRSA;
2162 2163 2164 2165
		}

	if (dsa_sign)
		{
2166 2167
		mask_a|=SSL_aDSS;
		emask_a|=SSL_aDSS;
2168 2169
		}

2170 2171
	mask_a|=SSL_aNULL;
	emask_a|=SSL_aNULL;
2172

2173
#ifndef OPENSSL_NO_KRB5
2174 2175 2176 2177
	mask_k|=SSL_kKRB5;
	mask_a|=SSL_aKRB5;
	emask_k|=SSL_kKRB5;
	emask_a|=SSL_aKRB5;
2178 2179
#endif

B
Bodo Möller 已提交
2180 2181 2182 2183 2184
	/* An ECC certificate may be usable for ECDH and/or
	 * ECDSA cipher suites depending on the key usage extension.
	 */
	if (have_ecc_cert)
		{
2185 2186
		cpk = &c->pkeys[SSL_PKEY_ECC];
		x = cpk->x509;
2187
		/* This call populates extension flags (ex_flags) */
B
Bodo Möller 已提交
2188 2189 2190 2191 2192
		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;
2193 2194
		if (!(cpk->valid_flags & CERT_PKEY_SIGN))
			ecdsa_ok = 0;
B
Bodo Möller 已提交
2195
		ecc_pkey = X509_get_pubkey(x);
2196
		ecc_pkey_size = (ecc_pkey != NULL) ?
B
Bodo Möller 已提交
2197 2198 2199
		    EVP_PKEY_bits(ecc_pkey) : 0;
		EVP_PKEY_free(ecc_pkey);
		if ((x->sig_alg) && (x->sig_alg->algorithm))
2200
			{
B
Bodo Möller 已提交
2201
			signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2202 2203
			OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
			}
B
Bodo Möller 已提交
2204 2205 2206
#ifndef OPENSSL_NO_ECDH
		if (ecdh_ok)
			{
2207 2208

			if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
B
Bodo Möller 已提交
2209
				{
2210 2211
				mask_k|=SSL_kECDHr;
				mask_a|=SSL_aECDH;
B
Bodo Möller 已提交
2212
				if (ecc_pkey_size <= 163)
2213 2214 2215 2216
					{
					emask_k|=SSL_kECDHr;
					emask_a|=SSL_aECDH;
					}
B
Bodo Möller 已提交
2217
				}
2218

2219
			if (pk_nid == NID_X9_62_id_ecPublicKey)
B
Bodo Möller 已提交
2220
				{
2221 2222
				mask_k|=SSL_kECDHe;
				mask_a|=SSL_aECDH;
B
Bodo Möller 已提交
2223
				if (ecc_pkey_size <= 163)
2224 2225 2226 2227
					{
					emask_k|=SSL_kECDHe;
					emask_a|=SSL_aECDH;
					}
B
Bodo Möller 已提交
2228 2229 2230 2231 2232 2233
				}
			}
#endif
#ifndef OPENSSL_NO_ECDSA
		if (ecdsa_ok)
			{
2234 2235
			mask_a|=SSL_aECDSA;
			emask_a|=SSL_aECDSA;
B
Bodo Möller 已提交
2236 2237 2238 2239 2240 2241 2242
			}
#endif
		}

#ifndef OPENSSL_NO_ECDH
	if (have_ecdh_tmp)
		{
2243 2244
		mask_k|=SSL_kEECDH;
		emask_k|=SSL_kEECDH;
B
Bodo Möller 已提交
2245 2246
		}
#endif
2247 2248

#ifndef OPENSSL_NO_PSK
2249 2250 2251 2252
	mask_k |= SSL_kPSK;
	mask_a |= SSL_aPSK;
	emask_k |= SSL_kPSK;
	emask_a |= SSL_aPSK;
2253 2254
#endif

2255 2256 2257 2258
	c->mask_k=mask_k;
	c->mask_a=mask_a;
	c->export_mask_k=emask_k;
	c->export_mask_a=emask_a;
2259 2260 2261
	c->valid=1;
	}

B
Bodo Möller 已提交
2262 2263 2264 2265
/* This handy macro borrowed from crypto/x509v3/v3_purp.c */
#define ku_reject(x, usage) \
	(((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))

2266 2267
#ifndef OPENSSL_NO_EC

2268
int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
B
Bodo Möller 已提交
2269
	{
2270
	unsigned long alg_k, alg_a;
B
Bodo Möller 已提交
2271 2272
	EVP_PKEY *pkey = NULL;
	int keysize = 0;
2273
	int signature_nid = 0, md_nid = 0, pk_nid = 0;
2274
	const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
B
Bodo Möller 已提交
2275

2276 2277 2278
	alg_k = cs->algorithm_mkey;
	alg_a = cs->algorithm_auth;

B
Bodo Möller 已提交
2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291
	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))
2292
		{
B
Bodo Möller 已提交
2293
		signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2294 2295
		OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
		}
2296
	if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
B
Bodo Möller 已提交
2297 2298 2299 2300
		{
		/* key usage, if present, must allow key agreement */
		if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
			{
2301
			SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
B
Bodo Möller 已提交
2302 2303
			return 0;
			}
2304
		if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
B
Bodo Möller 已提交
2305 2306
			{
			/* signature alg must be ECDSA */
2307
			if (pk_nid != NID_X9_62_id_ecPublicKey)
B
Bodo Möller 已提交
2308
				{
2309
				SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
B
Bodo Möller 已提交
2310 2311 2312
				return 0;
				}
			}
2313
		if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
B
Bodo Möller 已提交
2314 2315
			{
			/* signature alg must be RSA */
2316

2317
			if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2318 2319
				{
				SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2320
				return 0;
2321
				}
B
Bodo Möller 已提交
2322
			}
2323 2324
		}
	if (alg_a & SSL_aECDSA)
B
Bodo Möller 已提交
2325 2326 2327 2328
		{
		/* key usage, if present, must allow signing */
		if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
			{
2329
			SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
B
Bodo Möller 已提交
2330 2331 2332 2333 2334 2335 2336
			return 0;
			}
		}

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

2337 2338
#endif

2339
/* THIS NEEDS CLEANING UP */
B
Ben Laurie 已提交
2340
static int ssl_get_server_cert_index(SSL *s)
2341
	{
B
Ben Laurie 已提交
2342
 	unsigned long alg_k, alg_a;
2343

2344 2345
	alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
	alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2346

2347
	if (alg_k & (SSL_kECDHr|SSL_kECDHe))
B
Bodo Möller 已提交
2348
		{
2349
		/* we don't need to look at SSL_kEECDH
B
Bodo Möller 已提交
2350 2351
		 * since no certificate is needed for
		 * anon ECDH and for authenticated
2352
		 * EECDH, the check for the auth
B
Bodo Möller 已提交
2353 2354
		 * algorithm will set i correctly
		 * NOTE: For ECDH-RSA, we need an ECC
2355
		 * not an RSA cert but for EECDH-RSA
B
Bodo Möller 已提交
2356 2357 2358 2359
		 * we need an RSA cert. Placing the
		 * checks for SSL_kECDH before RSA
		 * checks ensures the correct cert is chosen.
		 */
B
Ben Laurie 已提交
2360
		return SSL_PKEY_ECC;
B
Bodo Möller 已提交
2361
		}
2362
	else if (alg_a & SSL_aECDSA)
B
Ben Laurie 已提交
2363
		return SSL_PKEY_ECC;
2364
	else if (alg_k & SSL_kDHr)
B
Ben Laurie 已提交
2365
		return SSL_PKEY_DH_RSA;
2366
	else if (alg_k & SSL_kDHd)
B
Ben Laurie 已提交
2367
		return SSL_PKEY_DH_DSA;
2368
	else if (alg_a & SSL_aDSS)
B
Ben Laurie 已提交
2369
		return SSL_PKEY_DSA_SIGN;
2370
	else if (alg_a & SSL_aRSA)
2371
		{
B
Ben Laurie 已提交
2372 2373
		if (s->cert->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
			return SSL_PKEY_RSA_SIGN;
2374
		else
B
Ben Laurie 已提交
2375
			return SSL_PKEY_RSA_ENC;
2376
		}
2377
	else if (alg_a & SSL_aKRB5)
2378
		/* VRS something else here? */
B
Ben Laurie 已提交
2379
		return -1;
2380
	else if (alg_a & SSL_aGOST94) 
B
Ben Laurie 已提交
2381
		return SSL_PKEY_GOST94;
2382
	else if (alg_a & SSL_aGOST01)
B
Ben Laurie 已提交
2383
		return SSL_PKEY_GOST01;
2384
	else /* if (alg_a & SSL_aNULL) */
2385
		{
B
Ben Laurie 已提交
2386 2387
		SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX,ERR_R_INTERNAL_ERROR);
		return -1;
2388
		}
B
Ben Laurie 已提交
2389 2390 2391 2392 2393 2394
	}

CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
	{
	CERT *c;
	int i;
B
Bodo Möller 已提交
2395

B
Ben Laurie 已提交
2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406
	c = s->cert;
	ssl_set_cert_masks(c, s->s3->tmp.new_cipher);

	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];
2407 2408
	}

2409
EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2410
	{
2411
	unsigned long alg_a;
2412
	CERT *c;
2413
	int idx = -1;
2414

2415
	alg_a = cipher->algorithm_auth;
2416 2417
	c=s->cert;

2418
	if ((alg_a & SSL_aDSS) &&
2419
		(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2420
		idx = SSL_PKEY_DSA_SIGN;
2421
	else if (alg_a & SSL_aRSA)
2422 2423
		{
		if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2424
			idx = SSL_PKEY_RSA_SIGN;
2425
		else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2426
			idx = SSL_PKEY_RSA_ENC;
2427
		}
2428
	else if ((alg_a & SSL_aECDSA) &&
B
Bodo Möller 已提交
2429
	         (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2430 2431
		idx = SSL_PKEY_ECC;
	if (idx == -1)
2432
		{
B
Bodo Möller 已提交
2433
		SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2434 2435
		return(NULL);
		}
2436 2437 2438
	if (pmd)
		*pmd = c->pkeys[idx].digest;
	return c->pkeys[idx].privatekey;
2439 2440
	}

B
Ben Laurie 已提交
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461
#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;
	}
#endif

2462
void ssl_update_cache(SSL *s,int mode)
2463
	{
2464 2465 2466 2467 2468 2469
	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
2470
	i=s->session_ctx->session_cache_mode;
L
Lutz Jänicke 已提交
2471
	if ((i & mode) && (!s->hit)
2472
		&& ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
B
Bodo Möller 已提交
2473 2474
		    || SSL_CTX_add_session(s->session_ctx,s->session))
		&& (s->session_ctx->new_session_cb != NULL))
2475
		{
2476
		CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
B
Bodo Möller 已提交
2477
		if (!s->session_ctx->new_session_cb(s,s->session))
2478 2479 2480 2481
			SSL_SESSION_free(s->session);
		}

	/* auto flush every 255 connections */
2482 2483 2484 2485
	if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
		((i & mode) == mode))
		{
		if (  (((mode & SSL_SESS_CACHE_CLIENT)
B
Bodo Möller 已提交
2486 2487
			?s->session_ctx->stats.sess_connect_good
			:s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2488
			{
B
Bodo Möller 已提交
2489
			SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2490 2491
			}
		}
2492 2493
	}

2494
const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2495 2496 2497 2498
	{
	return(s->method);
	}

2499
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525
	{
	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
2526
int SSL_get_error(const SSL *s,int i)
2527 2528
	{
	int reason;
2529
	unsigned long l;
2530 2531 2532 2533
	BIO *bio;

	if (i > 0) return(SSL_ERROR_NONE);

2534 2535 2536 2537 2538 2539 2540 2541 2542
	/* 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);
		}
2543 2544 2545 2546 2547 2548 2549

	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
2550 2551 2552 2553 2554 2555 2556 2557 2558
			/* 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. */
2559 2560 2561 2562 2563 2564
			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);
2565 2566
			else if (reason == BIO_RR_ACCEPT)
				return(SSL_ERROR_WANT_ACCEPT);
2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577
			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
2578
			/* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2579 2580 2581 2582 2583 2584
			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);
2585 2586
			else if (reason == BIO_RR_ACCEPT)
				return(SSL_ERROR_WANT_ACCEPT);
2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597
			else
				return(SSL_ERROR_SYSCALL);
			}
		}
	if ((i < 0) && SSL_want_x509_lookup(s))
		{
		return(SSL_ERROR_WANT_X509_LOOKUP);
		}

	if (i == 0)
		{
2598
		if (s->version == SSL2_VERSION)
2599 2600 2601 2602 2603 2604 2605
			{
			/* assume it is the socket being closed */
			return(SSL_ERROR_ZERO_RETURN);
			}
		else
			{
			if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2606
				(s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2607 2608 2609 2610 2611 2612
				return(SSL_ERROR_ZERO_RETURN);
			}
		}
	return(SSL_ERROR_SYSCALL);
	}

2613
int SSL_do_handshake(SSL *s)
2614
	{
2615 2616
	int ret=1;

2617 2618
	if (s->handshake_func == NULL)
		{
2619
		SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2620 2621
		return(-1);
		}
2622 2623 2624

	s->method->ssl_renegotiate_check(s);

2625
	if (SSL_in_init(s) || SSL_in_before(s))
2626 2627 2628 2629
		{
		ret=s->handshake_func(s);
		}
	return(ret);
2630 2631 2632 2633
	}

/* For the next 2 functions, SSL_clear() sets shutdown and so
 * one of these calls will reset it */
2634
void SSL_set_accept_state(SSL *s)
2635
	{
2636
	s->server=1;
2637 2638 2639 2640 2641
	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);
2642 2643
	ssl_clear_hash_ctx(&s->read_hash);
	ssl_clear_hash_ctx(&s->write_hash);
2644 2645
	}

2646
void SSL_set_connect_state(SSL *s)
2647
	{
2648
	s->server=0;
2649 2650 2651 2652 2653
	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);
2654 2655
	ssl_clear_hash_ctx(&s->read_hash);
	ssl_clear_hash_ctx(&s->write_hash);
2656 2657
	}

2658
int ssl_undefined_function(SSL *s)
2659 2660 2661 2662 2663
	{
	SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

2664 2665 2666 2667 2668 2669
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
2670 2671 2672 2673 2674 2675
int ssl_undefined_const_function(const SSL *s)
	{
	SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

2676
SSL_METHOD *ssl_bad_method(int ver)
2677 2678 2679 2680 2681
	{
	SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(NULL);
	}

B
Ben Laurie 已提交
2682
const char *SSL_get_version(const SSL *s)
2683
	{
2684 2685 2686
	if (s->version == TLS1_2_VERSION)
		return("TLSv1.2");
	else if (s->version == TLS1_1_VERSION)
2687
		return("TLSv1.1");
D
Dr. Stephen Henson 已提交
2688 2689
	else if (s->version == TLS1_VERSION)
		return("TLSv1");
2690 2691
	else if (s->version == SSL3_VERSION)
		return("SSLv3");
2692
	else if (s->version == SSL2_VERSION)
2693 2694 2695 2696 2697
		return("SSLv2");
	else
		return("unknown");
	}

2698
SSL *SSL_dup(SSL *s)
2699
	{
B
Ben Laurie 已提交
2700
	STACK_OF(X509_NAME) *sk;
2701
	X509_NAME *xn;
2702
	SSL *ret;
2703
	int i;
2704
	
B
Ben Laurie 已提交
2705 2706
	if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
	    return(NULL);
2707 2708 2709 2710 2711

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

2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723
	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
2724
		ret->method->ssl_free(ret);
2725 2726 2727 2728 2729
		ret->method = s->method;
		ret->method->ssl_new(ret);

		if (s->cert != NULL)
			{
2730 2731 2732 2733
			if (ret->cert != NULL)
				{
				ssl_cert_free(ret->cert);
				}
2734 2735 2736 2737 2738 2739 2740 2741
			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);
		}
2742

2743 2744
	ret->options=s->options;
	ret->mode=s->mode;
2745
	SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2746
	SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2747 2748
	ret->msg_callback = s->msg_callback;
	ret->msg_callback_arg = s->msg_callback_arg;
2749 2750
	SSL_set_verify(ret,SSL_get_verify_mode(s),
		SSL_get_verify_callback(s));
2751
	SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2752
	ret->generate_session_id = s->generate_session_id;
2753 2754 2755 2756 2757 2758

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

	/* copy app data, a little dangerous perhaps */
2759
	if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2760
		goto err;
2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771

	/* 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)
			{
2772
			if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2773 2774 2775 2776 2777
				goto err;
			}
		else
			ret->wbio=ret->rbio;
		}
2778 2779 2780 2781
	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
2782
	ret->renegotiate = s->renegotiate;
2783 2784 2785 2786 2787 2788 2789
	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;
2790 2791

	X509_VERIFY_PARAM_inherit(ret->param, s->param);
2792 2793 2794 2795

	/* dup the cipher_list and cipher_list_by_id stacks */
	if (s->cipher_list != NULL)
		{
B
Ben Laurie 已提交
2796
		if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2797 2798 2799
			goto err;
		}
	if (s->cipher_list_by_id != NULL)
B
Ben Laurie 已提交
2800
		if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2801 2802 2803 2804 2805 2806
			== NULL)
			goto err;

	/* Dup the client_CA list */
	if (s->client_CA != NULL)
		{
B
Ben Laurie 已提交
2807
		if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2808
		ret->client_CA=sk;
B
Ben Laurie 已提交
2809
		for (i=0; i<sk_X509_NAME_num(sk); i++)
2810
			{
B
Ben Laurie 已提交
2811 2812
			xn=sk_X509_NAME_value(sk,i);
			if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828
				{
				X509_NAME_free(xn);
				goto err;
				}
			}
		}

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

2829
void ssl_clear_cipher_ctx(SSL *s)
2830
	{
2831 2832 2833
	if (s->enc_read_ctx != NULL)
		{
		EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2834
		OPENSSL_free(s->enc_read_ctx);
2835 2836 2837 2838 2839
		s->enc_read_ctx=NULL;
		}
	if (s->enc_write_ctx != NULL)
		{
		EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2840
		OPENSSL_free(s->enc_write_ctx);
2841 2842
		s->enc_write_ctx=NULL;
		}
2843
#ifndef OPENSSL_NO_COMP
2844 2845 2846 2847 2848 2849 2850 2851 2852 2853
	if (s->expand != NULL)
		{
		COMP_CTX_free(s->expand);
		s->expand=NULL;
		}
	if (s->compress != NULL)
		{
		COMP_CTX_free(s->compress);
		s->compress=NULL;
		}
2854
#endif
2855 2856
	}

2857
/* Fix this function so that it takes an optional type parameter */
B
Ben Laurie 已提交
2858
X509 *SSL_get_certificate(const SSL *s)
2859 2860 2861 2862 2863 2864 2865
	{
	if (s->cert != NULL)
		return(s->cert->key->x509);
	else
		return(NULL);
	}

2866
/* Fix this function so that it takes an optional type parameter */
2867
EVP_PKEY *SSL_get_privatekey(SSL *s)
2868 2869 2870 2871 2872 2873 2874
	{
	if (s->cert != NULL)
		return(s->cert->key->privatekey);
	else
		return(NULL);
	}

2875
const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2876
	{
2877 2878 2879
	if ((s->session != NULL) && (s->session->cipher != NULL))
		return(s->session->cipher);
	return(NULL);
2880
	}
2881 2882 2883 2884 2885 2886 2887 2888 2889 2890
#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
2891

2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904
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);
	}
2905
#endif
2906

2907
int ssl_init_wbio_buffer(SSL *s,int push)
2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922
	{
	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
2923
	(void)BIO_reset(bbio);
2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941
/*	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);
	}
2942

2943
void ssl_free_wbio_buffer(SSL *s)
2944 2945 2946 2947 2948 2949
	{
	if (s->bbio == NULL) return;

	if (s->bbio == s->wbio)
		{
		/* remove buffering */
2950 2951 2952
		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);
2953
#endif
2954
	}
2955 2956 2957
	BIO_free(s->bbio);
	s->bbio=NULL;
	}
2958
	
2959
void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2960 2961 2962 2963
	{
	ctx->quiet_shutdown=mode;
	}

B
Ben Laurie 已提交
2964
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2965 2966 2967 2968
	{
	return(ctx->quiet_shutdown);
	}

2969
void SSL_set_quiet_shutdown(SSL *s,int mode)
2970 2971 2972 2973
	{
	s->quiet_shutdown=mode;
	}

B
Ben Laurie 已提交
2974
int SSL_get_quiet_shutdown(const SSL *s)
2975 2976 2977 2978
	{
	return(s->quiet_shutdown);
	}

2979
void SSL_set_shutdown(SSL *s,int mode)
2980 2981 2982 2983
	{
	s->shutdown=mode;
	}

B
Ben Laurie 已提交
2984
int SSL_get_shutdown(const SSL *s)
2985 2986 2987 2988
	{
	return(s->shutdown);
	}

B
Ben Laurie 已提交
2989
int SSL_version(const SSL *s)
2990 2991 2992 2993
	{
	return(s->version);
	}

B
Ben Laurie 已提交
2994
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2995 2996 2997 2998
	{
	return(ssl->ctx);
	}

2999 3000
SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
	{
3001
	if (ssl->ctx == ctx)
B
Bodo Möller 已提交
3002
		return ssl->ctx;
3003
#ifndef OPENSSL_NO_TLSEXT
B
Bodo Möller 已提交
3004 3005
	if (ctx == NULL)
		ctx = ssl->initial_ctx;
3006
#endif
3007 3008 3009 3010 3011 3012 3013 3014 3015 3016
	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);
	}

3017
#ifndef OPENSSL_NO_STDIO
3018
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3019 3020 3021 3022
	{
	return(X509_STORE_set_default_paths(ctx->cert_store));
	}

3023 3024
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
		const char *CApath)
3025 3026 3027
	{
	return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
	}
3028
#endif
3029

B
Ben Laurie 已提交
3030
void SSL_set_info_callback(SSL *ssl,
N
Nils Larsch 已提交
3031
	void (*cb)(const SSL *ssl,int type,int val))
3032 3033 3034 3035
	{
	ssl->info_callback=cb;
	}

3036 3037
/* One compiler (Diab DCC) doesn't like argument names in returned
   function pointer.  */
3038
void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
3039
	{
B
Ben Laurie 已提交
3040
	return ssl->info_callback;
3041 3042
	}

B
Ben Laurie 已提交
3043
int SSL_state(const SSL *ssl)
3044 3045 3046 3047
	{
	return(ssl->state);
	}

3048 3049 3050 3051 3052
void SSL_set_state(SSL *ssl, int state)
	{
	ssl->state = state;
	}

3053
void SSL_set_verify_result(SSL *ssl,long arg)
3054 3055 3056 3057
	{
	ssl->verify_result=arg;
	}

B
Ben Laurie 已提交
3058
long SSL_get_verify_result(const SSL *ssl)
3059 3060 3061 3062
	{
	return(ssl->verify_result);
	}

D
 
Dr. Stephen Henson 已提交
3063 3064
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)
3065
	{
3066 3067
	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
				new_func, dup_func, free_func);
3068
	}
3069

3070
int SSL_set_ex_data(SSL *s,int idx,void *arg)
3071 3072 3073 3074
	{
	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
	}

B
Ben Laurie 已提交
3075
void *SSL_get_ex_data(const SSL *s,int idx)
3076 3077 3078 3079
	{
	return(CRYPTO_get_ex_data(&s->ex_data,idx));
	}

D
 
Dr. Stephen Henson 已提交
3080 3081
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)
3082
	{
3083 3084
	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
				new_func, dup_func, free_func);
3085
	}
3086

3087
int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3088 3089 3090 3091
	{
	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
	}

B
Ben Laurie 已提交
3092
void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3093 3094 3095 3096
	{
	return(CRYPTO_get_ex_data(&s->ex_data,idx));
	}

3097
int ssl_ok(SSL *s)
3098 3099 3100 3101
	{
	return(1);
	}

B
Ben Laurie 已提交
3102
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3103 3104 3105 3106
	{
	return(ctx->cert_store);
	}

3107
void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3108 3109 3110 3111 3112 3113
	{
	if (ctx->cert_store != NULL)
		X509_STORE_free(ctx->cert_store);
	ctx->cert_store=store;
	}

B
Ben Laurie 已提交
3114
int SSL_want(const SSL *s)
3115 3116 3117 3118
	{
	return(s->rwstate);
	}

3119 3120 3121 3122 3123 3124
/*!
 * \brief Set the callback for generating temporary RSA keys.
 * \param ctx the SSL context.
 * \param cb the callback
 */

3125
#ifndef OPENSSL_NO_RSA
U
Ulf Möller 已提交
3126 3127
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
							  int is_export,
3128
							  int keylength))
3129
    {
3130
    SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3131
    }
3132

3133 3134 3135
void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
						  int is_export,
						  int keylength))
3136
    {
3137
    SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3138
    }
3139
#endif
3140

3141 3142 3143 3144
#ifdef DOXYGEN
/*!
 * \brief The RSA temporary key callback function.
 * \param ssl the SSL session.
U
Ulf Möller 已提交
3145 3146 3147
 * \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.
3148 3149 3150 3151
 * \return the temporary RSA key.
 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
 */

U
Ulf Möller 已提交
3152
RSA *cb(SSL *ssl,int is_export,int keylength)
3153 3154 3155 3156 3157 3158 3159 3160 3161
    {}
#endif

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

3162
#ifndef OPENSSL_NO_DH
U
Ulf Möller 已提交
3163
void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3164
                                                        int keylength))
3165
	{
3166
	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3167
	}
3168

U
Ulf Möller 已提交
3169
void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3170
                                                int keylength))
3171
	{
3172
	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3173
	}
3174
#endif
3175

B
Bodo Möller 已提交
3176 3177
#ifndef OPENSSL_NO_ECDH
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3178
                                                                int keylength))
B
Bodo Möller 已提交
3179
	{
3180
	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
B
Bodo Möller 已提交
3181 3182 3183
	}

void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3184
                                                        int keylength))
B
Bodo Möller 已提交
3185
	{
3186
	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
B
Bodo Möller 已提交
3187 3188 3189
	}
#endif

3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249
#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);
	}
N
Nils Larsch 已提交
3250

3251 3252 3253 3254
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))
N
Nils Larsch 已提交
3255
	{
3256
	s->psk_client_callback = cb;
N
Nils Larsch 已提交
3257 3258 3259
	}

void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3260 3261 3262
    unsigned int (*cb)(SSL *ssl, const char *hint,
                       char *identity, unsigned int max_identity_len, unsigned char *psk,
                       unsigned int max_psk_len))
N
Nils Larsch 已提交
3263
	{
3264
	ctx->psk_client_callback = cb;
N
Nils Larsch 已提交
3265 3266
	}

3267 3268 3269
void SSL_set_psk_server_callback(SSL *s,
    unsigned int (*cb)(SSL *ssl, const char *identity,
                       unsigned char *psk, unsigned int max_psk_len))
N
Nils Larsch 已提交
3270
	{
3271
	s->psk_server_callback = cb;
N
Nils Larsch 已提交
3272 3273 3274
	}

void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3275 3276
    unsigned int (*cb)(SSL *ssl, const char *identity,
                       unsigned char *psk, unsigned int max_psk_len))
N
Nils Larsch 已提交
3277
	{
3278
	ctx->psk_server_callback = cb;
N
Nils Larsch 已提交
3279
	}
3280
#endif
3281 3282 3283

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))
	{
3284
	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))
	{
3288
	SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
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	}

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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;
B
Ben Laurie 已提交
3308
 */
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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;
}
3323

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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;
	}

3339
#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
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#include "../crypto/bio/bss_file.c"
#endif
B
Ben Laurie 已提交
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IMPLEMENT_STACK_OF(SSL_CIPHER)
IMPLEMENT_STACK_OF(SSL_COMP)
D
Dr. Stephen Henson 已提交
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IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
				    ssl_cipher_id);