Inital import.
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).
(This change contains substantial changes from the original and
effectively starts a new history.)
diff --git a/ssl/ssl_sess.c b/ssl/ssl_sess.c
new file mode 100644
index 0000000..9054fd1
--- /dev/null
+++ b/ssl/ssl_sess.c
@@ -0,0 +1,1106 @@
+/* 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/engine.h>
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+
+#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)
+ {
+ OPENSSL_PUT_ERROR(SSL, 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;
+ }
+
+unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s)
+ {
+ return s->compress_meth;
+ }
+
+/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
+ * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
+ * until we have no conflict is going to complete in one iteration pretty much
+ * "most" of the time (btw: understatement). So, if it takes us 10 iterations
+ * and we still can't avoid a conflict - well that's a reasonable point to call
+ * it quits. Either the RAND code is broken or someone is trying to open roughly
+ * very close to 2^128 (or 2^256) SSL sessions to our server. How you might
+ * store that many sessions is perhaps a more interesting question ... */
+
+#define MAX_SESS_ID_ATTEMPTS 10
+static int def_generate_session_id(const SSL *ssl, unsigned char *id,
+ unsigned int *id_len)
+{
+ unsigned int retry = 0;
+ do
+ if (RAND_pseudo_bytes(id, *id_len) <= 0)
+ return 0;
+ while(SSL_has_matching_session_id(ssl, id, *id_len) &&
+ (++retry < MAX_SESS_ID_ATTEMPTS));
+ if(retry < MAX_SESS_ID_ATTEMPTS)
+ return 1;
+ /* else - woops a session_id match */
+ /* XXX We should also check the external cache --
+ * but the probability of a collision is negligible, and
+ * we could not prevent the concurrent creation of sessions
+ * with identical IDs since we currently don't have means
+ * to atomically check whether a session ID already exists
+ * and make a reservation for it if it does not
+ * (this problem applies to the internal cache as well).
+ */
+ return 0;
+}
+
+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
+ {
+ OPENSSL_PUT_ERROR(SSL, 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 */
+ OPENSSL_PUT_ERROR(SSL, 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 */
+ OPENSSL_PUT_ERROR(SSL, 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))
+ {
+ OPENSSL_PUT_ERROR(SSL, 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) {
+ OPENSSL_PUT_ERROR(SSL, 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)
+ {
+ OPENSSL_PUT_ERROR(SSL, ssl_get_new_session, ERR_R_INTERNAL_ERROR);
+ SSL_SESSION_free(ss);
+ return 0;
+ }
+ memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length);
+ ss->sid_ctx_length=s->sid_ctx_length;
+ s->session=ss;
+ ss->ssl_version=s->version;
+ ss->verify_result = X509_V_OK;
+
+ return(1);
+ }
+
+/* ssl_get_prev attempts to find an SSL_SESSION to be used to resume this
+ * connection. It is only called by servers.
+ *
+ * session_id: points at the session ID in the ClientHello. This code will
+ * read past the end of this in order to parse out the session ticket
+ * extension, if any.
+ * len: the length of the session ID.
+ * limit: a pointer to the first byte after the ClientHello.
+ *
+ * Returns:
+ * -1: error
+ * 0: a session may have been found.
+ *
+ * Side effects:
+ * - If a session is found then s->session is pointed at it (after freeing an
+ * existing session if need be) and s->verify_result is set from the session.
+ * - Both for new and resumed sessions, s->tlsext_ticket_expected is set to 1
+ * if the server should issue a new session ticket (to 0 otherwise).
+ */
+int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len,
+ const unsigned char *limit)
+ {
+ /* This is used only by servers. */
+
+ SSL_SESSION *ret=NULL;
+ int fatal = 0;
+ int try_session_cache = 1;
+#ifndef OPENSSL_NO_TLSEXT
+ int r;
+#endif
+
+ if (len > SSL_MAX_SSL_SESSION_ID_LENGTH)
+ goto err;
+
+ if (len == 0)
+ try_session_cache = 0;
+
+#ifndef OPENSSL_NO_TLSEXT
+ r = tls1_process_ticket(s, session_id, len, limit, &ret); /* sets s->tlsext_ticket_expected */
+ switch (r)
+ {
+ case -1: /* Error during processing */
+ fatal = 1;
+ goto err;
+ case 0: /* No ticket found */
+ case 1: /* Zero length ticket found */
+ break; /* Ok to carry on processing session id. */
+ case 2: /* Ticket found but not decrypted. */
+ case 3: /* Ticket decrypted, *ret has been set. */
+ try_session_cache = 0;
+ break;
+ default:
+ abort();
+ }
+#endif
+
+ if (try_session_cache &&
+ ret == NULL &&
+ !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
+ {
+ SSL_SESSION data;
+ data.ssl_version=s->version;
+ data.session_id_length=len;
+ if (len == 0)
+ return 0;
+ memcpy(data.session_id,session_id,len);
+ CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
+ ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data);
+ if (ret != NULL)
+ {
+ /* don't allow other threads to steal it: */
+ CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
+ }
+ CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
+ if (ret == NULL)
+ s->session_ctx->stats.sess_miss++;
+ }
+
+ if (try_session_cache &&
+ ret == NULL &&
+ s->session_ctx->get_session_cb != NULL)
+ {
+ int copy=1;
+
+ if ((ret=s->session_ctx->get_session_cb(s,session_id,len,©)))
+ {
+ 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).
+ */
+
+ OPENSSL_PUT_ERROR(SSL, 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);
+ if (!lh_SSL_SESSION_insert(ctx->sessions,&s,c)) {
+ return 0;
+ }
+
+ /* 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 */
+ if (ss->audit_proof != NULL) OPENSSL_free(ss->audit_proof);
+ ss->audit_proof_length = 0;
+#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)
+ {
+ OPENSSL_PUT_ERROR(SSL, 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);
+ }
+
+ /* 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)
+ {
+ OPENSSL_PUT_ERROR(SSL, SSL_SESSION_set1_id_context, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+ return 0;
+ }
+ s->sid_ctx_length=sid_ctx_len;
+ memcpy(s->sid_ctx,sid_ctx,sid_ctx_len);
+
+ return 1;
+ }
+
+#ifndef OPENSSL_NO_TLSEXT
+unsigned char *SSL_SESSION_get_tlsext_authz_server_audit_proof(SSL_SESSION *s, size_t *proof_length)
+ {
+ if (s->audit_proof != NULL)
+ *proof_length = s->audit_proof_length;
+ return s->audit_proof;
+ }
+#endif
+
+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)
+ {
+ OPENSSL_PUT_ERROR(SSL, 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 *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 *s, long t)
+ {
+ TIMEOUT_PARAM tp;
+
+ tp.ctx=s;
+ tp.cache=s->sessions;
+ if (tp.cache == NULL) return;
+ tp.time=t;
+ CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
+ lh_SSL_SESSION_doall_arg(tp.cache, timeout_doall_arg, &tp);
+ CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
+ }
+
+int ssl_clear_bad_session(SSL *s)
+ {
+ if ( (s->session != NULL) &&
+ !(s->shutdown & SSL_SENT_SHUTDOWN) &&
+ !(SSL_in_init(s) || SSL_in_before(s)))
+ {
+ SSL_CTX_remove_session(s->ctx,s->session);
+ return(1);
+ }
+ else
+ return(0);
+ }
+
+/* locked by SSL_CTX in the calling function */
+static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
+ {
+ if ((s->next == NULL) || (s->prev == NULL)) return;
+
+ if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail))
+ { /* last element in list */
+ if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
+ { /* only one element in list */
+ ctx->session_cache_head=NULL;
+ ctx->session_cache_tail=NULL;
+ }
+ else
+ {
+ ctx->session_cache_tail=s->prev;
+ s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail);
+ }
+ }
+ else
+ {
+ if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
+ { /* first element in list */
+ ctx->session_cache_head=s->next;
+ s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head);
+ }
+ else
+ { /* middle of list */
+ s->next->prev=s->prev;
+ s->prev->next=s->next;
+ }
+ }
+ s->prev=s->next=NULL;
+ }
+
+static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
+ {
+ if ((s->next != NULL) && (s->prev != NULL))
+ SSL_SESSION_list_remove(ctx,s);
+
+ if (ctx->session_cache_head == NULL)
+ {
+ ctx->session_cache_head=s;
+ ctx->session_cache_tail=s;
+ s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
+ s->next=(SSL_SESSION *)&(ctx->session_cache_tail);
+ }
+ else
+ {
+ s->next=ctx->session_cache_head;
+ s->next->prev=s;
+ s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
+ ctx->session_cache_head=s;
+ }
+ }
+
+void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
+ int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess))
+ {
+ ctx->new_session_cb=cb;
+ }
+
+int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess)
+ {
+ return ctx->new_session_cb;
+ }
+
+void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
+ void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess))
+ {
+ ctx->remove_session_cb=cb;
+ }
+
+void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess)
+ {
+ return ctx->remove_session_cb;
+ }
+
+void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
+ SSL_SESSION *(*cb)(struct ssl_st *ssl,
+ unsigned char *data,int len,int *copy))
+ {
+ ctx->get_session_cb=cb;
+ }
+
+SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl,
+ unsigned char *data,int len,int *copy)
+ {
+ return ctx->get_session_cb;
+ }
+
+void SSL_CTX_set_info_callback(SSL_CTX *ctx,
+ void (*cb)(const SSL *ssl,int type,int val))
+ {
+ ctx->info_callback=cb;
+ }
+
+void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val)
+ {
+ return ctx->info_callback;
+ }
+
+void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
+ int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey))
+ {
+ ctx->client_cert_cb=cb;
+ }
+
+int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey)
+ {
+ return ctx->client_cert_cb;
+ }
+
+void SSL_CTX_set_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)