diff options
Diffstat (limited to 'openssl/ssl/ssl_sess.c')
| -rw-r--r-- | openssl/ssl/ssl_sess.c | 1102 |
1 files changed, 0 insertions, 1102 deletions
diff --git a/openssl/ssl/ssl_sess.c b/openssl/ssl/ssl_sess.c deleted file mode 100644 index 93954e48..00000000 --- a/openssl/ssl/ssl_sess.c +++ /dev/null @@ -1,1102 +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 - 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; - } - -/* 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 == 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); - } - -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; -#ifndef OPENSSL_NO_TLSEXT - int r; -#endif - - if (len > SSL_MAX_SSL_SESSION_ID_LENGTH) - goto err; -#ifndef OPENSSL_NO_TLSEXT - r = tls1_process_ticket(s, session_id, len, limit, &ret); - if (r == -1) - { - fatal = 1; - goto err; - } - else if (r == 0 || (!ret && !len)) - goto err; - else if (!ret && !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) -#else - if (len == 0) - goto err; - if (!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) -#endif - { - 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) - { - int copy=1; - - s->session_ctx->stats.sess_miss++; - ret=NULL; - if (s->session_ctx->get_session_cb != NULL - && (ret=s->session_ctx->get_session_cb(s,session_id,len,©)) - != NULL) - { - 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've found the session named by the client, but we don't - * want to use it in this context. */ - -#if 0 /* The client cannot always know when a session is not appropriate, - * so we shouldn't generate an error message. */ - - SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); -#endif - 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 0 /* This is way too late. */ - - /* If a thread got the session, then 'swaped', and another got - * it and then due to a time-out decided to 'OPENSSL_free' it we could - * be in trouble. So I'll increment it now, then double decrement - * later - am I speaking rubbish?. */ - CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); -#endif - - if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */ - { - s->session_ctx->stats.sess_timeout++; - /* remove it from the cache */ - SSL_CTX_remove_session(s->session_ctx,ret); - goto err; - } - - s->session_ctx->stats.sess_hit++; - - /* ret->time=time(NULL); */ /* rezero timeout? */ - /* again, just leave the session - * if it is the same session, we have just incremented and - * then decremented the reference count :-) */ - 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); - 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 - 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); - if (s->ctx->session_timeout == 0) - session->timeout=SSL_get_default_timeout(s); - else - session->timeout=s->ctx->session_timeout; - } - -#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); - } - -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; - } - -#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) |