diff options
Diffstat (limited to 'thirdparty/openssl/ssl/ssl_sess.c')
| -rw-r--r-- | thirdparty/openssl/ssl/ssl_sess.c | 1287 |
1 files changed, 0 insertions, 1287 deletions
diff --git a/thirdparty/openssl/ssl/ssl_sess.c b/thirdparty/openssl/ssl/ssl_sess.c deleted file mode 100644 index f50f514212..0000000000 --- a/thirdparty/openssl/ssl/ssl_sess.c +++ /dev/null @@ -1,1287 +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); -} - -/* - * Create a new SSL_SESSION and duplicate the contents of |src| into it. If - * ticket == 0 then no ticket information is duplicated, otherwise it is. - */ -SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket) -{ - SSL_SESSION *dest; - - dest = OPENSSL_malloc(sizeof(*src)); - if (dest == NULL) { - goto err; - } - memcpy(dest, src, sizeof(*dest)); - - /* - * Set the various pointers to NULL so that we can call SSL_SESSION_free in - * the case of an error whilst halfway through constructing dest - */ -#ifndef OPENSSL_NO_PSK - dest->psk_identity_hint = NULL; - dest->psk_identity = NULL; -#endif - dest->ciphers = NULL; -#ifndef OPENSSL_NO_TLSEXT - dest->tlsext_hostname = NULL; -# ifndef OPENSSL_NO_EC - dest->tlsext_ecpointformatlist = NULL; - dest->tlsext_ellipticcurvelist = NULL; -# endif - dest->tlsext_tick = NULL; -#endif -#ifndef OPENSSL_NO_SRP - dest->srp_username = NULL; -#endif - memset(&dest->ex_data, 0, sizeof(dest->ex_data)); - - /* We deliberately don't copy the prev and next pointers */ - dest->prev = NULL; - dest->next = NULL; - - dest->references = 1; - - if (src->sess_cert != NULL) - CRYPTO_add(&src->sess_cert->references, 1, CRYPTO_LOCK_SSL_SESS_CERT); - - if (src->peer != NULL) - CRYPTO_add(&src->peer->references, 1, CRYPTO_LOCK_X509); - -#ifndef OPENSSL_NO_PSK - if (src->psk_identity_hint) { - dest->psk_identity_hint = BUF_strdup(src->psk_identity_hint); - if (dest->psk_identity_hint == NULL) { - goto err; - } - } - if (src->psk_identity) { - dest->psk_identity = BUF_strdup(src->psk_identity); - if (dest->psk_identity == NULL) { - goto err; - } - } -#endif - - if(src->ciphers != NULL) { - dest->ciphers = sk_SSL_CIPHER_dup(src->ciphers); - if (dest->ciphers == NULL) - goto err; - } - - if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, - &dest->ex_data, &src->ex_data)) { - goto err; - } - -#ifndef OPENSSL_NO_TLSEXT - if (src->tlsext_hostname) { - dest->tlsext_hostname = BUF_strdup(src->tlsext_hostname); - if (dest->tlsext_hostname == NULL) { - goto err; - } - } -# ifndef OPENSSL_NO_EC - if (src->tlsext_ecpointformatlist) { - dest->tlsext_ecpointformatlist = - BUF_memdup(src->tlsext_ecpointformatlist, - src->tlsext_ecpointformatlist_length); - if (dest->tlsext_ecpointformatlist == NULL) - goto err; - } - if (src->tlsext_ellipticcurvelist) { - dest->tlsext_ellipticcurvelist = - BUF_memdup(src->tlsext_ellipticcurvelist, - src->tlsext_ellipticcurvelist_length); - if (dest->tlsext_ellipticcurvelist == NULL) - goto err; - } -# endif - - if (ticket != 0) { - dest->tlsext_tick = BUF_memdup(src->tlsext_tick, src->tlsext_ticklen); - if(dest->tlsext_tick == NULL) - goto err; - } else { - dest->tlsext_tick_lifetime_hint = 0; - dest->tlsext_ticklen = 0; - } -#endif - -#ifndef OPENSSL_NO_SRP - if (src->srp_username) { - dest->srp_username = BUF_strdup(src->srp_username); - if (dest->srp_username == NULL) { - goto err; - } - } -#endif - - return dest; -err: - SSLerr(SSL_F_SSL_SESSION_DUP, ERR_R_MALLOC_FAILURE); - SSL_SESSION_free(dest); - return NULL; -} - -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_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; -} - -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; - - 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 if (s->version == DTLS1_2_VERSION) { - ss->ssl_version = DTLS1_2_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 RFC5077 ticket, use empty session ID (as server). - * Note that: - * (a) ssl_get_prev_session() does lookahead into the - * ClientHello extensions to find the session ticket. - * When ssl_get_prev_session() fails, s3_srvr.c calls - * ssl_get_new_session() in ssl3_get_client_hello(). - * At that point, it has not yet parsed the extensions, - * however, because of the lookahead, it already knows - * whether a ticket is expected or not. - * - * (b) s3_clnt.c calls ssl_get_new_session() before parsing - * ServerHello extensions, and before recording the session - * ID received from the server, so this block is a noop. - */ - 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; - } - } -#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 (limit - session_id < len) { - fatal = 1; - goto err; - } - - if (len == 0) - try_session_cache = 0; - -#ifndef OPENSSL_NO_TLSEXT - /* sets s->tlsext_ticket_expected */ - r = tls1_process_ticket(s, session_id, len, limit, &ret); - 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; - } else if (s == NULL && - lh_SSL_SESSION_retrieve(ctx->sessions, c) == NULL) { - /* s == NULL can also mean OOM error in lh_SSL_SESSION_insert ... */ - - /* - * ... so take back the extra reference and also don't add - * the session to the SSL_SESSION_list at this time - */ - s = c; - } - - /* 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); - if (s->kssl_ctx->client_princ == NULL) { - SSLerr(SSL_F_SSL_SET_SESSION, ERR_R_MALLOC_FAILURE); - return 0; - } - 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; - if (s->sid_ctx != sid_ctx) - 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->session_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) |