- /* 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 <assert.h>
- #include <stdio.h>
- #include <string.h>
-
- #include <openssl/err.h>
- #include <openssl/lhash.h>
- #include <openssl/mem.h>
- #include <openssl/rand.h>
-
- #include "internal.h"
- #include "../crypto/internal.h"
-
-
- /* The address of this is a magic value, a pointer to which is returned by
- * SSL_magic_pending_session_ptr(). It allows a session callback to indicate
- * that it needs to asynchronously fetch session information. */
- static const char g_pending_session_magic = 0;
-
- static CRYPTO_EX_DATA_CLASS g_ex_data_class =
- CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
-
- 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_magic_pending_session_ptr(void) {
- return (SSL_SESSION *)&g_pending_session_magic;
- }
-
- 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 */
- return SSL_SESSION_up_ref(ssl->session);
- }
-
- 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) {
- int index;
- if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp, new_func,
- dup_func, free_func)) {
- return -1;
- }
- return index;
- }
-
- 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) {
- OPENSSL_PUT_ERROR(SSL, 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 = SSL_DEFAULT_SESSION_TIMEOUT;
- ss->time = (unsigned long)time(NULL);
- CRYPTO_new_ex_data(&g_ex_data_class, ss, &ss->ex_data);
- return ss;
- }
-
- const uint8_t *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 ... */
- static int def_generate_session_id(const SSL *ssl, uint8_t *id,
- unsigned int *id_len) {
- static const unsigned kMaxAttempts = 10;
- unsigned int retry = 0;
- do {
- if (!RAND_bytes(id, *id_len)) {
- return 0;
- }
- } while (SSL_has_matching_session_id(ssl, id, *id_len) &&
- (++retry < kMaxAttempts));
-
- if (retry < kMaxAttempts) {
- 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 (s->mode & SSL_MODE_NO_SESSION_CREATION) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SESSION_MAY_NOT_BE_CREATED);
- return 0;
- }
-
- ss = SSL_SESSION_new();
- if (ss == NULL) {
- return 0;
- }
-
- /* If the context has a default timeout, use it over the default. */
- if (s->initial_ctx->session_timeout != 0) {
- ss->timeout = s->initial_ctx->session_timeout;
- }
-
- SSL_SESSION_free(s->session);
- s->session = NULL;
-
- if (session) {
- if (s->version == SSL3_VERSION || s->version == TLS1_VERSION ||
- s->version == TLS1_1_VERSION || s->version == TLS1_2_VERSION ||
- s->version == DTLS1_VERSION || s->version == DTLS1_2_VERSION) {
- ss->ssl_version = s->version;
- ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH;
- } else {
- OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_SSL_VERSION);
- SSL_SESSION_free(ss);
- return 0;
- }
-
- /* If RFC4507 ticket use empty session ID */
- if (s->tlsext_ticket_expected) {
- ss->session_id_length = 0;
- goto sess_id_done;
- }
-
- /* Choose which callback will set the session ID */
- if (s->generate_session_id) {
- cb = s->generate_session_id;
- } else if (s->initial_ctx->generate_session_id) {
- cb = s->initial_ctx->generate_session_id;
- }
-
- /* Choose a session ID */
- tmp = ss->session_id_length;
- if (!cb(s, ss->session_id, &tmp)) {
- /* The callback failed */
- OPENSSL_PUT_ERROR(SSL, 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 */
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
- SSL_SESSION_free(ss);
- return 0;
- }
-
- ss->session_id_length = tmp;
- /* Finally, check for a conflict */
- if (SSL_has_matching_session_id(s, ss->session_id, ss->session_id_length)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONFLICT);
- SSL_SESSION_free(ss);
- return 0;
- }
-
- sess_id_done:
- if (s->tlsext_hostname) {
- ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
- if (ss->tlsext_hostname == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- SSL_SESSION_free(ss);
- return 0;
- }
- }
- } else {
- ss->session_id_length = 0;
- }
-
- if (s->sid_ctx_length > sizeof(ss->sid_ctx)) {
- OPENSSL_PUT_ERROR(SSL, 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_lookup_session looks up |session_id| in the session cache and sets
- * |*out_session| to an |SSL_SESSION| object if found. The caller takes
- * ownership of the result. */
- static enum ssl_session_result_t ssl_lookup_session(
- SSL *ssl, SSL_SESSION **out_session, const uint8_t *session_id,
- size_t session_id_len) {
- *out_session = NULL;
-
- if (session_id_len == 0 || session_id_len > SSL_MAX_SSL_SESSION_ID_LENGTH) {
- return ssl_session_success;
- }
-
- SSL_SESSION *session;
- /* Try the internal cache, if it exists. */
- if (!(ssl->initial_ctx->session_cache_mode &
- SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) {
- SSL_SESSION data;
- data.ssl_version = ssl->version;
- data.session_id_length = session_id_len;
- memcpy(data.session_id, session_id, session_id_len);
-
- CRYPTO_MUTEX_lock_read(&ssl->initial_ctx->lock);
- session = lh_SSL_SESSION_retrieve(ssl->initial_ctx->sessions, &data);
- if (session != NULL) {
- SSL_SESSION_up_ref(session);
- }
- CRYPTO_MUTEX_unlock(&ssl->initial_ctx->lock);
-
- if (session != NULL) {
- *out_session = session;
- return ssl_session_success;
- }
- }
-
- /* Fall back to the external cache, if it exists. */
- if (ssl->initial_ctx->get_session_cb == NULL) {
- return ssl_session_success;
- }
- int copy = 1;
- session = ssl->initial_ctx->get_session_cb(ssl, (uint8_t *)session_id,
- session_id_len, ©);
- if (session == NULL) {
- return ssl_session_success;
- }
- if (session == SSL_magic_pending_session_ptr()) {
- return ssl_session_retry;
- }
-
- /* 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) {
- SSL_SESSION_up_ref(session);
- }
-
- /* Add the externally cached session to the internal cache if necessary. */
- if (!(ssl->initial_ctx->session_cache_mode &
- SSL_SESS_CACHE_NO_INTERNAL_STORE)) {
- SSL_CTX_add_session(ssl->initial_ctx, session);
- }
-
- *out_session = session;
- return ssl_session_success;
- }
-
- enum ssl_session_result_t ssl_get_prev_session(
- SSL *ssl, SSL_SESSION **out_session, int *out_send_ticket,
- const struct ssl_early_callback_ctx *ctx) {
- /* This is used only by servers. */
- assert(ssl->server);
- SSL_SESSION *session = NULL;
- int send_ticket = 0;
-
- /* If tickets are disabled, always behave as if no tickets are present. */
- const uint8_t *ticket = NULL;
- size_t ticket_len = 0;
- const int tickets_supported =
- !(SSL_get_options(ssl) & SSL_OP_NO_TICKET) &&
- (ssl->version > SSL3_VERSION || ctx->extensions != NULL) &&
- SSL_early_callback_ctx_extension_get(ctx, TLSEXT_TYPE_session_ticket,
- &ticket, &ticket_len);
- if (tickets_supported) {
- if (!tls_process_ticket(ssl, &session, &send_ticket, ticket, ticket_len,
- ctx->session_id, ctx->session_id_len)) {
- return ssl_session_error;
- }
- } else {
- /* The client does not support session tickets, so the session ID should be
- * used instead. */
- enum ssl_session_result_t lookup_ret = ssl_lookup_session(
- ssl, &session, ctx->session_id, ctx->session_id_len);
- if (lookup_ret != ssl_session_success) {
- return lookup_ret;
- }
- }
-
- if (session == NULL ||
- session->sid_ctx_length != ssl->sid_ctx_length ||
- memcmp(session->sid_ctx, ssl->sid_ctx, ssl->sid_ctx_length) != 0) {
- goto no_session;
- }
-
- if ((ssl->verify_mode & SSL_VERIFY_PEER) && ssl->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). */
- OPENSSL_PUT_ERROR(SSL, SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
- goto fatal_error;
- }
-
- if (session->timeout < (long)(time(NULL) - session->time)) {
- if (!tickets_supported) {
- /* The session was from the cache, so remove it. */
- SSL_CTX_remove_session(ssl->initial_ctx, session);
- }
- goto no_session;
- }
-
- *out_session = session;
- *out_send_ticket = send_ticket;
- return ssl_session_success;
-
- fatal_error:
- SSL_SESSION_free(session);
- return ssl_session_error;
-
- no_session:
- *out_session = NULL;
- *out_send_ticket = tickets_supported;
- SSL_SESSION_free(session);
- return ssl_session_success;
- }
-
- 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 */
- SSL_SESSION_up_ref(c);
- /* if session c is in already in cache, we take back the increment later */
-
- CRYPTO_MUTEX_lock_write(&ctx->lock);
- if (!lh_SSL_SESSION_insert(ctx->sessions, &s, c)) {
- CRYPTO_MUTEX_unlock(&ctx->lock);
- SSL_SESSION_free(c);
- return 0;
- }
-
- /* s != NULL iff we already had a session with the given session ID. 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;
- }
- }
- }
- }
-
- CRYPTO_MUTEX_unlock(&ctx->lock);
- 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 lock) {
- SSL_SESSION *r;
- int ret = 0;
-
- if (c != NULL && c->session_id_length != 0) {
- if (lock) {
- CRYPTO_MUTEX_lock_write(&ctx->lock);
- }
- r = lh_SSL_SESSION_retrieve(ctx->sessions, c);
- if (r == c) {
- ret = 1;
- r = lh_SSL_SESSION_delete(ctx->sessions, c);
- SSL_SESSION_list_remove(ctx, c);
- }
-
- if (lock) {
- CRYPTO_MUTEX_unlock(&ctx->lock);
- }
-
- if (ret) {
- r->not_resumable = 1;
- if (ctx->remove_session_cb != NULL) {
- ctx->remove_session_cb(ctx, r);
- }
- SSL_SESSION_free(r);
- }
- }
-
- return ret;
- }
-
- SSL_SESSION *SSL_SESSION_up_ref(SSL_SESSION *session) {
- if (session) {
- CRYPTO_refcount_inc(&session->references);
- }
- return session;
- }
-
- void SSL_SESSION_free(SSL_SESSION *session) {
- if (session == NULL ||
- !CRYPTO_refcount_dec_and_test_zero(&session->references)) {
- return;
- }
-
- CRYPTO_free_ex_data(&g_ex_data_class, session, &session->ex_data);
-
- OPENSSL_cleanse(session->master_key, sizeof(session->master_key));
- OPENSSL_cleanse(session->session_id, sizeof(session->session_id));
- ssl_sess_cert_free(session->sess_cert);
- X509_free(session->peer);
- OPENSSL_free(session->tlsext_hostname);
- OPENSSL_free(session->tlsext_tick);
- OPENSSL_free(session->tlsext_signed_cert_timestamp_list);
- OPENSSL_free(session->ocsp_response);
- OPENSSL_free(session->psk_identity);
- OPENSSL_cleanse(session, sizeof(*session));
- OPENSSL_free(session);
- }
-
- int SSL_set_session(SSL *s, SSL_SESSION *session) {
- if (s->session == session) {
- return 1;
- }
-
- SSL_SESSION_free(s->session);
- s->session = session;
- if (session != NULL) {
- SSL_SESSION_up_ref(session);
- s->verify_result = session->verify_result;
- }
-
- return 1;
- }
-
- 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 uint8_t *sid_ctx,
- unsigned int sid_ctx_len) {
- if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
- OPENSSL_PUT_ERROR(SSL, 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;
- }
-
- typedef struct timeout_param_st {
- SSL_CTX *ctx;
- long time;
- LHASH_OF(SSL_SESSION) *cache;
- } TIMEOUT_PARAM;
-
- static void timeout_doall_arg(SSL_SESSION *sess, void *void_param) {
- TIMEOUT_PARAM *param = void_param;
-
- if (param->time == 0 ||
- param->time > (sess->time + sess->timeout)) {
- /* timeout */
- /* The reason we don't call SSL_CTX_remove_session() is to
- * save on locking overhead */
- (void) lh_SSL_SESSION_delete(param->cache, sess);
- SSL_SESSION_list_remove(param->ctx, sess);
- sess->not_resumable = 1;
- if (param->ctx->remove_session_cb != NULL) {
- param->ctx->remove_session_cb(param->ctx, sess);
- }
- SSL_SESSION_free(sess);
- }
- }
-
- void SSL_CTX_flush_sessions(SSL_CTX *ctx, long t) {
- TIMEOUT_PARAM tp;
-
- tp.ctx = ctx;
- tp.cache = ctx->sessions;
- if (tp.cache == NULL) {
- return;
- }
- tp.time = t;
- CRYPTO_MUTEX_lock_write(&ctx->lock);
- lh_SSL_SESSION_doall_arg(tp.cache, timeout_doall_arg, &tp);
- CRYPTO_MUTEX_unlock(&ctx->lock);
- }
-
- int ssl_clear_bad_session(SSL *s) {
- if (s->session != NULL && !(s->shutdown & SSL_SENT_SHUTDOWN) &&
- !SSL_in_init(s)) {
- SSL_CTX_remove_session(s->ctx, s->session);
- return 1;
- }
-
- 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,
- uint8_t *data, int len,
- int *copy)) {
- ctx->get_session_cb = cb;
- }
-
- SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, uint8_t *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;
- }
-
- IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)
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