kopia lustrzana https://github.com/ryukoposting/Signal-Android
1190 wiersze
34 KiB
C
1190 wiersze
34 KiB
C
/* ssl/ssl_sess.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* ====================================================================
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* Copyright 2005 Nokia. All rights reserved.
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*
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* The portions of the attached software ("Contribution") is developed by
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* Nokia Corporation and is licensed pursuant to the OpenSSL open source
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* license.
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*
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* The Contribution, originally written by Mika Kousa and Pasi Eronen of
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* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
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* support (see RFC 4279) to OpenSSL.
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*
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* No patent licenses or other rights except those expressly stated in
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* the OpenSSL open source license shall be deemed granted or received
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* expressly, by implication, estoppel, or otherwise.
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*
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* No assurances are provided by Nokia that the Contribution does not
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* infringe the patent or other intellectual property rights of any third
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* party or that the license provides you with all the necessary rights
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* to make use of the Contribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
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* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
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* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
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* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
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* OTHERWISE.
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*/
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#include <stdio.h>
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#include <openssl/lhash.h>
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#include <openssl/rand.h>
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#ifndef OPENSSL_NO_ENGINE
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#include <openssl/engine.h>
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#endif
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#include "ssl_locl.h"
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static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
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static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);
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static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
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SSL_SESSION *SSL_get_session(const SSL *ssl)
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/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
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{
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return(ssl->session);
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}
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SSL_SESSION *SSL_get1_session(SSL *ssl)
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/* variant of SSL_get_session: caller really gets something */
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{
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SSL_SESSION *sess;
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/* Need to lock this all up rather than just use CRYPTO_add so that
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* somebody doesn't free ssl->session between when we check it's
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* non-null and when we up the reference count. */
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CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION);
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sess = ssl->session;
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if(sess)
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sess->references++;
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CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION);
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return(sess);
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}
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int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
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CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
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{
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return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp,
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new_func, dup_func, free_func);
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}
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int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
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{
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return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
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}
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void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx)
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{
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return(CRYPTO_get_ex_data(&s->ex_data,idx));
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}
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SSL_SESSION *SSL_SESSION_new(void)
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{
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SSL_SESSION *ss;
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ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION));
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if (ss == NULL)
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{
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SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE);
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return(0);
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}
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memset(ss,0,sizeof(SSL_SESSION));
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ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
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ss->references=1;
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ss->timeout=60*5+4; /* 5 minute timeout by default */
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ss->time=(unsigned long)time(NULL);
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ss->prev=NULL;
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ss->next=NULL;
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ss->compress_meth=0;
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#ifndef OPENSSL_NO_TLSEXT
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ss->tlsext_hostname = NULL;
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#ifndef OPENSSL_NO_EC
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ss->tlsext_ecpointformatlist_length = 0;
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ss->tlsext_ecpointformatlist = NULL;
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ss->tlsext_ellipticcurvelist_length = 0;
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ss->tlsext_ellipticcurvelist = NULL;
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#endif
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#endif
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CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
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#ifndef OPENSSL_NO_PSK
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ss->psk_identity_hint=NULL;
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ss->psk_identity=NULL;
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#endif
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#ifndef OPENSSL_NO_SRP
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ss->srp_username=NULL;
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#endif
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return(ss);
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}
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const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len)
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{
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if(len)
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*len = s->session_id_length;
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return s->session_id;
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}
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unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s)
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{
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return s->compress_meth;
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}
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/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
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* has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
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* until we have no conflict is going to complete in one iteration pretty much
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* "most" of the time (btw: understatement). So, if it takes us 10 iterations
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* and we still can't avoid a conflict - well that's a reasonable point to call
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* it quits. Either the RAND code is broken or someone is trying to open roughly
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* very close to 2^128 (or 2^256) SSL sessions to our server. How you might
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* store that many sessions is perhaps a more interesting question ... */
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#define MAX_SESS_ID_ATTEMPTS 10
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static int def_generate_session_id(const SSL *ssl, unsigned char *id,
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unsigned int *id_len)
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{
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unsigned int retry = 0;
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do
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if (RAND_pseudo_bytes(id, *id_len) <= 0)
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return 0;
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while(SSL_has_matching_session_id(ssl, id, *id_len) &&
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(++retry < MAX_SESS_ID_ATTEMPTS));
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if(retry < MAX_SESS_ID_ATTEMPTS)
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return 1;
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/* else - woops a session_id match */
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/* XXX We should also check the external cache --
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* but the probability of a collision is negligible, and
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* we could not prevent the concurrent creation of sessions
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* with identical IDs since we currently don't have means
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* to atomically check whether a session ID already exists
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* and make a reservation for it if it does not
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* (this problem applies to the internal cache as well).
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*/
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return 0;
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}
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void SSL_set_session_creation_enabled (SSL *s, int creation_enabled)
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{
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s->session_creation_enabled = creation_enabled;
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}
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int ssl_get_new_session(SSL *s, int session)
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{
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/* This gets used by clients and servers. */
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unsigned int tmp;
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SSL_SESSION *ss=NULL;
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GEN_SESSION_CB cb = def_generate_session_id;
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/* caller should check this if they can do better error handling */
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if (!s->session_creation_enabled) return(0);
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if ((ss=SSL_SESSION_new()) == NULL) return(0);
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/* If the context has a default timeout, use it */
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if (s->session_ctx->session_timeout == 0)
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ss->timeout=SSL_get_default_timeout(s);
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else
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ss->timeout=s->session_ctx->session_timeout;
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if (s->session != NULL)
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{
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SSL_SESSION_free(s->session);
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s->session=NULL;
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}
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if (session)
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{
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if (s->version == SSL2_VERSION)
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{
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ss->ssl_version=SSL2_VERSION;
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ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
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}
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else if (s->version == SSL3_VERSION)
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{
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ss->ssl_version=SSL3_VERSION;
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ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
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}
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else if (s->version == TLS1_VERSION)
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{
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ss->ssl_version=TLS1_VERSION;
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ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
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}
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else if (s->version == TLS1_1_VERSION)
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{
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ss->ssl_version=TLS1_1_VERSION;
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ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
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}
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else if (s->version == TLS1_2_VERSION)
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{
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ss->ssl_version=TLS1_2_VERSION;
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ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
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}
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else if (s->version == DTLS1_BAD_VER)
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{
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ss->ssl_version=DTLS1_BAD_VER;
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ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
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}
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else if (s->version == DTLS1_VERSION)
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{
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ss->ssl_version=DTLS1_VERSION;
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ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
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}
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else
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{
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SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION);
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SSL_SESSION_free(ss);
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return(0);
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}
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#ifndef OPENSSL_NO_TLSEXT
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/* If RFC4507 ticket use empty session ID */
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if (s->tlsext_ticket_expected)
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{
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ss->session_id_length = 0;
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goto sess_id_done;
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}
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#endif
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/* Choose which callback will set the session ID */
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CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
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if(s->generate_session_id)
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cb = s->generate_session_id;
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else if(s->session_ctx->generate_session_id)
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cb = s->session_ctx->generate_session_id;
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CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
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/* Choose a session ID */
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tmp = ss->session_id_length;
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if(!cb(s, ss->session_id, &tmp))
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{
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/* The callback failed */
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SSLerr(SSL_F_SSL_GET_NEW_SESSION,
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SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
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SSL_SESSION_free(ss);
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return(0);
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}
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/* Don't allow the callback to set the session length to zero.
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* nor set it higher than it was. */
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if(!tmp || (tmp > ss->session_id_length))
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{
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/* The callback set an illegal length */
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SSLerr(SSL_F_SSL_GET_NEW_SESSION,
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SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
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SSL_SESSION_free(ss);
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return(0);
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}
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/* If the session length was shrunk and we're SSLv2, pad it */
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if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION))
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memset(ss->session_id + tmp, 0, ss->session_id_length - tmp);
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else
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ss->session_id_length = tmp;
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/* Finally, check for a conflict */
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if(SSL_has_matching_session_id(s, ss->session_id,
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ss->session_id_length))
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{
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SSLerr(SSL_F_SSL_GET_NEW_SESSION,
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SSL_R_SSL_SESSION_ID_CONFLICT);
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SSL_SESSION_free(ss);
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return(0);
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}
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#ifndef OPENSSL_NO_TLSEXT
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sess_id_done:
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if (s->tlsext_hostname) {
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ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
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if (ss->tlsext_hostname == NULL) {
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SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
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SSL_SESSION_free(ss);
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return 0;
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}
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}
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#ifndef OPENSSL_NO_EC
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if (s->tlsext_ecpointformatlist)
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{
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if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
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if ((ss->tlsext_ecpointformatlist = OPENSSL_malloc(s->tlsext_ecpointformatlist_length)) == NULL)
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{
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SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
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SSL_SESSION_free(ss);
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return 0;
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}
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ss->tlsext_ecpointformatlist_length = s->tlsext_ecpointformatlist_length;
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memcpy(ss->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length);
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}
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if (s->tlsext_ellipticcurvelist)
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{
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if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
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if ((ss->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL)
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{
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SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
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SSL_SESSION_free(ss);
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return 0;
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}
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ss->tlsext_ellipticcurvelist_length = s->tlsext_ellipticcurvelist_length;
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memcpy(ss->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length);
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}
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#endif
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#endif
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#ifndef OPENSSL_NO_PSK
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if (s->psk_identity_hint)
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{
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ss->psk_identity_hint = BUF_strdup(s->psk_identity_hint);
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if (ss->psk_identity_hint == NULL)
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{
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SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
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SSL_SESSION_free(ss);
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return 0;
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}
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}
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#endif
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}
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else
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{
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ss->session_id_length=0;
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}
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if (s->sid_ctx_length > sizeof ss->sid_ctx)
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{
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SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
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SSL_SESSION_free(ss);
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return 0;
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}
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memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length);
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ss->sid_ctx_length=s->sid_ctx_length;
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s->session=ss;
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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,©)))
|
|
{
|
|
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);
|
|
i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load;
|
|
CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0;
|
|
lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout),
|
|
TIMEOUT_PARAM, &tp);
|
|
CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i;
|
|
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)
|