Delete bundled copy of OpenSSL and replace with README.

openssl/ssl/ssl_sess.c

Index: openssl/ssl/ssl_sess.c
diff --git a/openssl/ssl/ssl_sess.c b/openssl/ssl/ssl_sess.c
deleted file mode 100644
index 4f6af5557fbab24e90ec7619b4adf26b3498f520..0000000000000000000000000000000000000000
--- a/openssl/ssl/ssl_sess.c
+++ /dev/null
@@ -1,1174 +0,0 @@
-/* ssl/ssl_sess.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * 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.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
- *
- * 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).
- *
- */
-/* ====================================================================
- * 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.
- */
-
-#include <stdio.h>
-#include <openssl/lhash.h>
-#include <openssl/rand.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-#include "ssl_locl.h"
-
-static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
-static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);
-static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
-
-SSL_SESSION *SSL_get_session(const SSL *ssl)
-/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
-	{
-	return(ssl->session);
-	}
-
-SSL_SESSION *SSL_get1_session(SSL *ssl)
-/* variant of SSL_get_session: caller really gets something */
-	{
-	SSL_SESSION *sess;
-	/* Need to lock this all up rather than just use CRYPTO_add so that
-	 * somebody doesn't free ssl->session between when we check it's
-	 * non-null and when we up the reference count. */
-	CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION);
-	sess = ssl->session;
-	if(sess)
-		sess->references++;
-	CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION);
-	return(sess);
-	}
-
-int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
-	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
-	{
-	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp,
-			new_func, dup_func, free_func);
-	}
-
-int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
-	{
-	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
-	}
-
-void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx)
-	{
-	return(CRYPTO_get_ex_data(&s->ex_data,idx));
-	}
-
-SSL_SESSION *SSL_SESSION_new(void)
-	{
-	SSL_SESSION *ss;
-
-	ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION));
-	if (ss == NULL)
-		{
-		SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE);
-		return(0);
-		}
-	memset(ss,0,sizeof(SSL_SESSION));
-
-	ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
-	ss->references=1;
-	ss->timeout=60*5+4; /* 5 minute timeout by default */
-	ss->time=(unsigned long)time(NULL);
-	ss->prev=NULL;
-	ss->next=NULL;
-	ss->compress_meth=0;
-#ifndef OPENSSL_NO_TLSEXT
-	ss->tlsext_hostname = NULL; 
-#ifndef OPENSSL_NO_EC
-	ss->tlsext_ecpointformatlist_length = 0;
-	ss->tlsext_ecpointformatlist = NULL;
-	ss->tlsext_ellipticcurvelist_length = 0;
-	ss->tlsext_ellipticcurvelist = NULL;
-#endif
-#endif
-	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
-#ifndef OPENSSL_NO_PSK
-	ss->psk_identity_hint=NULL;
-	ss->psk_identity=NULL;
-#endif
-#ifndef OPENSSL_NO_SRP
-	ss->srp_username=NULL;
-#endif
-	return(ss);
-	}
-
-const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len)
-	{
-	if(len)
-		*len = s->session_id_length;
-	return s->session_id;
-	}
-
-unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s)
-	{
-	return s->compress_meth;
-	}
-
-/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
- * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
- * until we have no conflict is going to complete in one iteration pretty much
- * "most" of the time (btw: understatement). So, if it takes us 10 iterations
- * and we still can't avoid a conflict - well that's a reasonable point to call
- * it quits. Either the RAND code is broken or someone is trying to open roughly
- * very close to 2^128 (or 2^256) SSL sessions to our server. How you might
- * store that many sessions is perhaps a more interesting question ... */
-
-#define MAX_SESS_ID_ATTEMPTS 10
-static int def_generate_session_id(const SSL *ssl, unsigned char *id,
-				unsigned int *id_len)
-{
-	unsigned int retry = 0;
-	do
-		if (RAND_pseudo_bytes(id, *id_len) <= 0)
-			return 0;
-	while(SSL_has_matching_session_id(ssl, id, *id_len) &&
-		(++retry < MAX_SESS_ID_ATTEMPTS));
-	if(retry < MAX_SESS_ID_ATTEMPTS)
-		return 1;
-	/* else - woops a session_id match */
-	/* XXX We should also check the external cache --
-	 * but the probability of a collision is negligible, and
-	 * we could not prevent the concurrent creation of sessions
-	 * with identical IDs since we currently don't have means
-	 * to atomically check whether a session ID already exists
-	 * and make a reservation for it if it does not
-	 * (this problem applies to the internal cache as well).
-	 */
-	return 0;
-}
-
-void SSL_set_session_creation_enabled (SSL *s, int creation_enabled)
-	{
-	s->session_creation_enabled = creation_enabled;
-	}
-
-int ssl_get_new_session(SSL *s, int session)
-	{
-	/* This gets used by clients and servers. */
-
-	unsigned int tmp;
-	SSL_SESSION *ss=NULL;
-	GEN_SESSION_CB cb = def_generate_session_id;
-
-	/* caller should check this if they can do better error handling */
-        if (!s->session_creation_enabled) return(0);
-	if ((ss=SSL_SESSION_new()) == NULL) return(0);
-
-	/* If the context has a default timeout, use it */
-	if (s->session_ctx->session_timeout == 0)
-		ss->timeout=SSL_get_default_timeout(s);
-	else
-		ss->timeout=s->session_ctx->session_timeout;
-
-	if (s->session != NULL)
-		{
-		SSL_SESSION_free(s->session);
-		s->session=NULL;
-		}
-
-	if (session)
-		{
-		if (s->version == SSL2_VERSION)
-			{
-			ss->ssl_version=SSL2_VERSION;
-			ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
-			}
-		else if (s->version == SSL3_VERSION)
-			{
-			ss->ssl_version=SSL3_VERSION;
-			ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
-			}
-		else if (s->version == TLS1_VERSION)
-			{
-			ss->ssl_version=TLS1_VERSION;
-			ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
-			}
-		else if (s->version == TLS1_1_VERSION)
-			{
-			ss->ssl_version=TLS1_1_VERSION;
-			ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
-			}
-		else if (s->version == TLS1_2_VERSION)
-			{
-			ss->ssl_version=TLS1_2_VERSION;
-			ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
-			}
-		else if (s->version == DTLS1_BAD_VER)
-			{
-			ss->ssl_version=DTLS1_BAD_VER;
-			ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
-			}
-		else if (s->version == DTLS1_VERSION)
-			{
-			ss->ssl_version=DTLS1_VERSION;
-			ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
-			}
-		else
-			{
-			SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION);
-			SSL_SESSION_free(ss);
-			return(0);
-			}
-#ifndef OPENSSL_NO_TLSEXT
-		/* If RFC4507 ticket use empty session ID */
-		if (s->tlsext_ticket_expected)
-			{
-			ss->session_id_length = 0;
-			goto sess_id_done;
-			}
-#endif
-		/* Choose which callback will set the session ID */
-		CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
-		if(s->generate_session_id)
-			cb = s->generate_session_id;
-		else if(s->session_ctx->generate_session_id)
-			cb = s->session_ctx->generate_session_id;
-		CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
-		/* Choose a session ID */
-		tmp = ss->session_id_length;
-		if(!cb(s, ss->session_id, &tmp))
-			{
-			/* The callback failed */
-			SSLerr(SSL_F_SSL_GET_NEW_SESSION,
-				SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
-			SSL_SESSION_free(ss);
-			return(0);
-			}
-		/* Don't allow the callback to set the session length to zero.
-		 * nor set it higher than it was. */
-		if(!tmp || (tmp > ss->session_id_length))
-			{
-			/* The callback set an illegal length */
-			SSLerr(SSL_F_SSL_GET_NEW_SESSION,
-				SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
-			SSL_SESSION_free(ss);
-			return(0);
-			}
-		/* If the session length was shrunk and we're SSLv2, pad it */
-		if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION))
-			memset(ss->session_id + tmp, 0, ss->session_id_length - tmp);
-		else
-			ss->session_id_length = tmp;
-		/* Finally, check for a conflict */
-		if(SSL_has_matching_session_id(s, ss->session_id,
-						ss->session_id_length))
-			{
-			SSLerr(SSL_F_SSL_GET_NEW_SESSION,
-				SSL_R_SSL_SESSION_ID_CONFLICT);
-			SSL_SESSION_free(ss);
-			return(0);
-			}
-#ifndef OPENSSL_NO_TLSEXT
-		sess_id_done:
-		if (s->tlsext_hostname) {
-			ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
-			if (ss->tlsext_hostname == NULL) {
-				SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
-				SSL_SESSION_free(ss);
-				return 0;
-				}
-			}
-#ifndef OPENSSL_NO_EC
-		if (s->tlsext_ecpointformatlist)
-			{
-			if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
-			if ((ss->tlsext_ecpointformatlist = OPENSSL_malloc(s->tlsext_ecpointformatlist_length)) == NULL)
-				{
-				SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
-				SSL_SESSION_free(ss);
-				return 0;
-				}
-			ss->tlsext_ecpointformatlist_length = s->tlsext_ecpointformatlist_length;
-			memcpy(ss->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length);
-			}
-		if (s->tlsext_ellipticcurvelist)
-			{
-			if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
-			if ((ss->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL)
-				{
-				SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
-				SSL_SESSION_free(ss);
-				return 0;
-				}
-			ss->tlsext_ellipticcurvelist_length = s->tlsext_ellipticcurvelist_length;
-			memcpy(ss->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length);
-			}
-#endif
-#endif
-		}
-	else
-		{
-		ss->session_id_length=0;
-		}
-
-	if (s->sid_ctx_length > sizeof ss->sid_ctx)
-		{
-		SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
-		SSL_SESSION_free(ss);
-		return 0;
-		}
-	memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length);
-	ss->sid_ctx_length=s->sid_ctx_length;
-	s->session=ss;
-	ss->ssl_version=s->version;
-	ss->verify_result = X509_V_OK;
-
-	return(1);
-	}
-
-/* ssl_get_prev attempts to find an SSL_SESSION to be used to resume this
- * connection. It is only called by servers.
- *
- *   session_id: points at the session ID in the ClientHello. This code will
- *       read past the end of this in order to parse out the session ticket
- *       extension, if any.
- *   len: the length of the session ID.
- *   limit: a pointer to the first byte after the ClientHello.
- *
- * Returns:
- *   -1: error
- *    0: a session may have been found.
- *
- * Side effects:
- *   - If a session is found then s->session is pointed at it (after freeing an
- *     existing session if need be) and s->verify_result is set from the session.
- *   - Both for new and resumed sessions, s->tlsext_ticket_expected is set to 1
- *     if the server should issue a new session ticket (to 0 otherwise).
- */
-int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len,
-			const unsigned char *limit)
-	{
-	/* This is used only by servers. */
-
-	SSL_SESSION *ret=NULL;
-	int fatal = 0;
-	int try_session_cache = 1;
-#ifndef OPENSSL_NO_TLSEXT
-	int r;
-#endif
-
-	if (len > SSL_MAX_SSL_SESSION_ID_LENGTH)
-		goto err;
-
-	if (len == 0)
-		try_session_cache = 0;
-
-#ifndef OPENSSL_NO_TLSEXT
-	r = tls1_process_ticket(s, session_id, len, limit, &ret); /* sets s->tlsext_ticket_expected */
-	switch (r)
-		{
-	case -1: /* Error during processing */
-		fatal = 1;
-		goto err;
-	case 0: /* No ticket found */
-	case 1: /* Zero length ticket found */
-		break; /* Ok to carry on processing session id. */
-	case 2: /* Ticket found but not decrypted. */
-	case 3: /* Ticket decrypted, *ret has been set. */
-		try_session_cache = 0;
-		break;
-	default:
-		abort();
-		}
-#endif
-
-	if (try_session_cache &&
-	    ret == NULL &&
-	    !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
-		{
-		SSL_SESSION data;
-		data.ssl_version=s->version;
-		data.session_id_length=len;
-		if (len == 0)
-			return 0;
-		memcpy(data.session_id,session_id,len);
-		CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
-		ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data);
-		if (ret != NULL)
-			{
-			/* don't allow other threads to steal it: */
-			CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
-			}
-		CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
-		if (ret == NULL)
-			s->session_ctx->stats.sess_miss++;
-		}
-
-	if (try_session_cache &&
-	    ret == NULL &&
-	    s->session_ctx->get_session_cb != NULL)
-		{
-		int copy=1;
-	
-		if ((ret=s->session_ctx->get_session_cb(s,session_id,len,&copy)))
-			{
-			s->session_ctx->stats.sess_cb_hit++;
-
-			/* Increment reference count now if the session callback
-			 * asks us to do so (note that if the session structures
-			 * returned by the callback are shared between threads,
-			 * it must handle the reference count itself [i.e. copy == 0],
-			 * or things won't be thread-safe). */
-			if (copy)
-				CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
-
-			/* Add the externally cached session to the internal
-			 * cache as well if and only if we are supposed to. */
-			if(!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE))
-				/* The following should not return 1, otherwise,
-				 * things are very strange */
-				SSL_CTX_add_session(s->session_ctx,ret);
-			}
-		}
-
-	if (ret == NULL)
-		goto err;
-
-	/* Now ret is non-NULL and we own one of its reference counts. */
-
-	if (ret->sid_ctx_length != s->sid_ctx_length
-	    || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length))
-		{
-		/* We have the session requested by the client, but we don't
-		 * want to use it in this context. */
-		goto err; /* treat like cache miss */
-		}
-	
-	if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0)
-		{
-		/* We can't be sure if this session is being used out of
-		 * context, which is especially important for SSL_VERIFY_PEER.
-		 * The application should have used SSL[_CTX]_set_session_id_context.
-		 *
-		 * For this error case, we generate an error instead of treating
-		 * the event like a cache miss (otherwise it would be easy for
-		 * applications to effectively disable the session cache by
-		 * accident without anyone noticing).
-		 */
-		
-		SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
-		fatal = 1;
-		goto err;
-		}
-
-	if (ret->cipher == NULL)
-		{
-		unsigned char buf[5],*p;
-		unsigned long l;
-
-		p=buf;
-		l=ret->cipher_id;
-		l2n(l,p);
-		if ((ret->ssl_version>>8) >= SSL3_VERSION_MAJOR)
-			ret->cipher=ssl_get_cipher_by_char(s,&(buf[2]));
-		else 
-			ret->cipher=ssl_get_cipher_by_char(s,&(buf[1]));
-		if (ret->cipher == NULL)
-			goto err;
-		}
-
-	if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */
-		{
-		s->session_ctx->stats.sess_timeout++;
-		if (try_session_cache)
-			{
-			/* session was from the cache, so remove it */
-			SSL_CTX_remove_session(s->session_ctx,ret);
-			}
-		goto err;
-		}
-
-	s->session_ctx->stats.sess_hit++;
-
-	if (s->session != NULL)
-		SSL_SESSION_free(s->session);
-	s->session=ret;
-	s->verify_result = s->session->verify_result;
-	return 1;
-
- err:
-	if (ret != NULL)
-		{
-		SSL_SESSION_free(ret);
-#ifndef OPENSSL_NO_TLSEXT
-		if (!try_session_cache)
-			{
-			/* The session was from a ticket, so we should
-			 * issue a ticket for the new session */
-			s->tlsext_ticket_expected = 1;
-			}
-#endif
-		}
-	if (fatal)
-		return -1;
-	else
-		return 0;
-	}
-
-int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
-	{
-	int ret=0;
-	SSL_SESSION *s;
-
-	/* add just 1 reference count for the SSL_CTX's session cache
-	 * even though it has two ways of access: each session is in a
-	 * doubly linked list and an lhash */
-	CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION);
-	/* if session c is in already in cache, we take back the increment later */
-
-	CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
-	s=lh_SSL_SESSION_insert(ctx->sessions,c);
-	
-	/* s != NULL iff we already had a session with the given PID.
-	 * In this case, s == c should hold (then we did not really modify
-	 * ctx->sessions), or we're in trouble. */
-	if (s != NULL && s != c)
-		{
-		/* We *are* in trouble ... */
-		SSL_SESSION_list_remove(ctx,s);
-		SSL_SESSION_free(s);
-		/* ... so pretend the other session did not exist in cache
-		 * (we cannot handle two SSL_SESSION structures with identical
-		 * session ID in the same cache, which could happen e.g. when
-		 * two threads concurrently obtain the same session from an external
-		 * cache) */
-		s = NULL;
-		}
-
- 	/* Put at the head of the queue unless it is already in the cache */
-	if (s == NULL)
-		SSL_SESSION_list_add(ctx,c);
-
-	if (s != NULL)
-		{
-		/* existing cache entry -- decrement previously incremented reference
-		 * count because it already takes into account the cache */
-
-		SSL_SESSION_free(s); /* s == c */
-		ret=0;
-		}
-	else
-		{
-		/* new cache entry -- remove old ones if cache has become too large */
-		
-		ret=1;
-
-		if (SSL_CTX_sess_get_cache_size(ctx) > 0)
-			{
-			while (SSL_CTX_sess_number(ctx) >
-				SSL_CTX_sess_get_cache_size(ctx))
-				{
-				if (!remove_session_lock(ctx,
-					ctx->session_cache_tail, 0))
-					break;
-				else
-					ctx->stats.sess_cache_full++;
-				}
-			}
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
-	return(ret);
-	}
-
-int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c)
-{
-	return remove_session_lock(ctx, c, 1);
-}
-
-static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck)
-	{
-	SSL_SESSION *r;
-	int ret=0;
-
-	if ((c != NULL) && (c->session_id_length != 0))
-		{
-		if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
-		if ((r = lh_SSL_SESSION_retrieve(ctx->sessions,c)) == c)
-			{
-			ret=1;
-			r=lh_SSL_SESSION_delete(ctx->sessions,c);
-			SSL_SESSION_list_remove(ctx,c);
-			}
-
-		if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
-
-		if (ret)
-			{
-			r->not_resumable=1;
-			if (ctx->remove_session_cb != NULL)
-				ctx->remove_session_cb(ctx,r);
-			SSL_SESSION_free(r);
-			}
-		}
-	else
-		ret=0;
-	return(ret);
-	}
-
-void SSL_SESSION_free(SSL_SESSION *ss)
-	{
-	int i;
-
-	if(ss == NULL)
-	    return;
-
-	i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION);
-#ifdef REF_PRINT
-	REF_PRINT("SSL_SESSION",ss);
-#endif
-	if (i > 0) return;
-#ifdef REF_CHECK
-	if (i < 0)
-		{
-		fprintf(stderr,"SSL_SESSION_free, bad reference count\n");
-		abort(); /* ok */
-		}
-#endif
-
-	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
-
-	OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg);
-	OPENSSL_cleanse(ss->master_key,sizeof ss->master_key);
-	OPENSSL_cleanse(ss->session_id,sizeof ss->session_id);
-	if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert);
-	if (ss->peer != NULL) X509_free(ss->peer);
-	if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers);
-#ifndef OPENSSL_NO_TLSEXT
-	if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname);
-	if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick);
-#ifndef OPENSSL_NO_EC
-	ss->tlsext_ecpointformatlist_length = 0;
-	if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
-	ss->tlsext_ellipticcurvelist_length = 0;
-	if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
-#endif /* OPENSSL_NO_EC */
-#endif
-#ifndef OPENSSL_NO_PSK
-	if (ss->psk_identity_hint != NULL)
-		OPENSSL_free(ss->psk_identity_hint);
-	if (ss->psk_identity != NULL)
-		OPENSSL_free(ss->psk_identity);
-#endif
-#ifndef OPENSSL_NO_SRP
-	if (ss->srp_username != NULL)
-		OPENSSL_free(ss->srp_username);
-#endif
-	OPENSSL_cleanse(ss,sizeof(*ss));
-	OPENSSL_free(ss);
-	}
-
-int SSL_set_session(SSL *s, SSL_SESSION *session)
-	{
-	int ret=0;
-	const SSL_METHOD *meth;
-
-	if (session != NULL)
-		{
-		meth=s->ctx->method->get_ssl_method(session->ssl_version);
-		if (meth == NULL)
-			meth=s->method->get_ssl_method(session->ssl_version);
-		if (meth == NULL)
-			{
-			SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD);
-			return(0);
-			}
-
-		if (meth != s->method)
-			{
-			if (!SSL_set_ssl_method(s,meth))
-				return(0);
-			}
-
-#ifndef OPENSSL_NO_KRB5
-                if (s->kssl_ctx && !s->kssl_ctx->client_princ &&
-                    session->krb5_client_princ_len > 0)
-                {
-                    s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1);
-                    memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ,
-                            session->krb5_client_princ_len);
-                    s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0';
-                }
-#endif /* OPENSSL_NO_KRB5 */
-
-		/* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/
-		CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION);
-		if (s->session != NULL)
-			SSL_SESSION_free(s->session);
-		s->session=session;
-		s->verify_result = s->session->verify_result;
-		/* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/
-		ret=1;
-		}
-	else
-		{
-		if (s->session != NULL)
-			{
-			SSL_SESSION_free(s->session);
-			s->session=NULL;
-			}
-
-		meth=s->ctx->method;
-		if (meth != s->method)
-			{
-			if (!SSL_set_ssl_method(s,meth))
-				return(0);
-			}
-		ret=1;
-		}
-	return(ret);
-	}
-
-long SSL_SESSION_set_timeout(SSL_SESSION *s, long t)
-	{
-	if (s == NULL) return(0);
-	s->timeout=t;
-	return(1);
-	}
-
-long SSL_SESSION_get_timeout(const SSL_SESSION *s)
-	{
-	if (s == NULL) return(0);
-	return(s->timeout);
-	}
-
-long SSL_SESSION_get_time(const SSL_SESSION *s)
-	{
-	if (s == NULL) return(0);
-	return(s->time);
-	}
-
-long SSL_SESSION_set_time(SSL_SESSION *s, long t)
-	{
-	if (s == NULL) return(0);
-	s->time=t;
-	return(t);
-	}
-
-X509 *SSL_SESSION_get0_peer(SSL_SESSION *s)
-	{
-	return s->peer;
-	}
-
-int SSL_SESSION_set1_id_context(SSL_SESSION *s,const unsigned char *sid_ctx,
-			       unsigned int sid_ctx_len)
-	{
-	if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
-		{
-		SSLerr(SSL_F_SSL_SESSION_SET1_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
-		return 0;
-		}
-	s->sid_ctx_length=sid_ctx_len;
-	memcpy(s->sid_ctx,sid_ctx,sid_ctx_len);
-
-	return 1;
-	}
-
-long SSL_CTX_set_timeout(SSL_CTX *s, long t)
-	{
-	long l;
-	if (s == NULL) return(0);
-	l=s->session_timeout;
-	s->session_timeout=t;
-	return(l);
-	}
-
-long SSL_CTX_get_timeout(const SSL_CTX *s)
-	{
-	if (s == NULL) return(0);
-	return(s->session_timeout);
-	}
-
-#ifndef OPENSSL_NO_TLSEXT
-int SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s, void *secret, int *secret_len,
-	STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg), void *arg)
-	{
-	if (s == NULL) return(0);
-	s->tls_session_secret_cb = tls_session_secret_cb;
-	s->tls_session_secret_cb_arg = arg;
-	return(1);
-	}
-
-int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
-				  void *arg)
-	{
-	if (s == NULL) return(0);
-	s->tls_session_ticket_ext_cb = cb;
-	s->tls_session_ticket_ext_cb_arg = arg;
-	return(1);
-	}
-
-int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len)
-	{
-	if (s->version >= TLS1_VERSION)
-		{
-		if (s->tlsext_session_ticket)
-			{
-			OPENSSL_free(s->tlsext_session_ticket);
-			s->tlsext_session_ticket = NULL;
-			}
-
-		s->tlsext_session_ticket = OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len);
-		if (!s->tlsext_session_ticket)
-			{
-			SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE);
-			return 0;
-			}
-
-		if (ext_data)
-			{
-			s->tlsext_session_ticket->length = ext_len;
-			s->tlsext_session_ticket->data = s->tlsext_session_ticket + 1;
-			memcpy(s->tlsext_session_ticket->data, ext_data, ext_len);
-			}
-		else
-			{
-			s->tlsext_session_ticket->length = 0;
-			s->tlsext_session_ticket->data = NULL;
-			}
-
-		return 1;
-		}
-
-	return 0;
-	}
-#endif /* OPENSSL_NO_TLSEXT */
-
-typedef struct timeout_param_st
-	{
-	SSL_CTX *ctx;
-	long time;
-	LHASH_OF(SSL_SESSION) *cache;
-	} TIMEOUT_PARAM;
-
-static void timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p)
-	{
-	if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */
-		{
-		/* The reason we don't call SSL_CTX_remove_session() is to
-		 * save on locking overhead */
-		(void)lh_SSL_SESSION_delete(p->cache,s);
-		SSL_SESSION_list_remove(p->ctx,s);
-		s->not_resumable=1;
-		if (p->ctx->remove_session_cb != NULL)
-			p->ctx->remove_session_cb(p->ctx,s);
-		SSL_SESSION_free(s);
-		}
-	}
-
-static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION, TIMEOUT_PARAM)
-
-void SSL_CTX_flush_sessions(SSL_CTX *s, long t)
-	{
-	unsigned long i;
-	TIMEOUT_PARAM tp;
-
-	tp.ctx=s;
-	tp.cache=s->sessions;
-	if (tp.cache == NULL) return;
-	tp.time=t;
-	CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
-	lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout),
-				 TIMEOUT_PARAM, &tp);
-	CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
-	}
-
-int ssl_clear_bad_session(SSL *s)
-	{
-	if (	(s->session != NULL) &&
-		!(s->shutdown & SSL_SENT_SHUTDOWN) &&
-		!(SSL_in_init(s) || SSL_in_before(s)))
-		{
-		SSL_CTX_remove_session(s->ctx,s->session);
-		return(1);
-		}
-	else
-		return(0);
-	}
-
-/* locked by SSL_CTX in the calling function */
-static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
-	{
-	if ((s->next == NULL) || (s->prev == NULL)) return;
-
-	if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail))
-		{ /* last element in list */
-		if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
-			{ /* only one element in list */
-			ctx->session_cache_head=NULL;
-			ctx->session_cache_tail=NULL;
-			}
-		else
-			{
-			ctx->session_cache_tail=s->prev;
-			s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail);
-			}
-		}
-	else
-		{
-		if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
-			{ /* first element in list */
-			ctx->session_cache_head=s->next;
-			s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head);
-			}
-		else
-			{ /* middle of list */
-			s->next->prev=s->prev;
-			s->prev->next=s->next;
-			}
-		}
-	s->prev=s->next=NULL;
-	}
-
-static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
-	{
-	if ((s->next != NULL) && (s->prev != NULL))
-		SSL_SESSION_list_remove(ctx,s);
-
-	if (ctx->session_cache_head == NULL)
-		{
-		ctx->session_cache_head=s;
-		ctx->session_cache_tail=s;
-		s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
-		s->next=(SSL_SESSION *)&(ctx->session_cache_tail);
-		}
-	else
-		{
-		s->next=ctx->session_cache_head;
-		s->next->prev=s;
-		s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
-		ctx->session_cache_head=s;
-		}
-	}
-
-void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
-	int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess))
-	{
-	ctx->new_session_cb=cb;
-	}
-
-int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess)
-	{
-	return ctx->new_session_cb;
-	}
-
-void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
-	void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess))
-	{
-	ctx->remove_session_cb=cb;
-	}
-
-void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess)
-	{
-	return ctx->remove_session_cb;
-	}
-
-void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
-	SSL_SESSION *(*cb)(struct ssl_st *ssl,
-	         unsigned char *data,int len,int *copy))
-	{
-	ctx->get_session_cb=cb;
-	}
-
-SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl,
-	         unsigned char *data,int len,int *copy)
-	{
-	return ctx->get_session_cb;
-	}
-
-void SSL_CTX_set_info_callback(SSL_CTX *ctx, 
-	void (*cb)(const SSL *ssl,int type,int val))
-	{
-	ctx->info_callback=cb;
-	}
-
-void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val)
-	{
-	return ctx->info_callback;
-	}
-
-void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
-	int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey))
-	{
-	ctx->client_cert_cb=cb;
-	}
-
-int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey)
-	{
-	return ctx->client_cert_cb;
-	}
-
-void SSL_CTX_set_channel_id_cb(SSL_CTX *ctx,
-	void (*cb)(SSL *ssl, EVP_PKEY **pkey))
-	{
-	ctx->channel_id_cb=cb;
-	}
-
-void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(SSL * ssl, EVP_PKEY **pkey)
-	{
-	return ctx->channel_id_cb;
-	}
-
-#ifndef OPENSSL_NO_ENGINE
-int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e)
-	{
-	if (!ENGINE_init(e))
-		{
-		SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB);
-		return 0;
-		}
-	if(!ENGINE_get_ssl_client_cert_function(e))
-		{
-		SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD);
-		ENGINE_finish(e);
-		return 0;
-		}
-	ctx->client_cert_engine = e;
-	return 1;
-	}
-#endif
-
-void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
-	int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len))
-	{
-	ctx->app_gen_cookie_cb=cb;
-	}
-
-void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
-	int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len))
-	{
-	ctx->app_verify_cookie_cb=cb;
-	}
-
-IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)