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97b148c3b51dd80bff9008f68191aa392ad06a5a
apache/modules/ssl/ssl_scache.c
Doug MacEachern 97b148c3b5 PR: 
Obtained from:
Submitted by:   Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>
Reviewed by:	dougm
implement SSLSessionCache shmht and shmcb based on apr_rmm and apr_shm


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93942 13f79535-47bb-0310-9956-ffa450edef68
2002-03-14 23:31:23 +00:00

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/* _ _
** _ __ ___ ___ __| | ___ ___| | mod_ssl
** | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
** | | | | | | (_) | (_| | \__ \__ \ | www.modssl.org
** |_| |_| |_|\___/ \__,_|___|___/___/_| ftp.modssl.org
** |_____|
** ssl_scache.c
** Session Cache Abstraction
*/
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``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 APACHE SOFTWARE FOUNDATION 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.
* ====================================================================
*/
/* ``Open-Source Software: generous
programmers from around the world all
join forces to help you shoot
yourself in the foot for free.''
-- Unknown */
#include "mod_ssl.h"
/* _________________________________________________________________
**
** Session Cache: Common Abstraction Layer
** _________________________________________________________________
*/
void ssl_scache_init(server_rec *s, apr_pool_t *p)
{
SSLModConfigRec *mc = myModConfig(s);
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
ssl_scache_dbm_init(s, p);
else if ((mc->nSessionCacheMode == SSL_SCMODE_SHMHT) ||
(mc->nSessionCacheMode == SSL_SCMODE_SHMCB)) {
void *data;
const char *userdata_key = "ssl_scache_init";
apr_pool_userdata_get(&data, userdata_key, s->process->pool);
if (!data) {
apr_pool_userdata_setn((const void *)1, userdata_key,
apr_pool_cleanup_null, s->process->pool);
return;
}
if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
ssl_scache_shmht_init(s, p);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
ssl_scache_shmcb_init(s, p);
}
return;
}
void ssl_scache_kill(server_rec *s)
{
SSLModConfigRec *mc = myModConfig(s);
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
ssl_scache_dbm_kill(s);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
ssl_scache_shmht_kill(s);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
ssl_scache_shmcb_kill(s);
return;
}
BOOL ssl_scache_store(server_rec *s, UCHAR *id, int idlen, time_t expiry, SSL_SESSION *sess)
{
SSLModConfigRec *mc = myModConfig(s);
BOOL rv = FALSE;
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
rv = ssl_scache_dbm_store(s, id, idlen, expiry, sess);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
rv = ssl_scache_shmht_store(s, id, idlen, expiry, sess);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
rv = ssl_scache_shmcb_store(s, id, idlen, expiry, sess);
return rv;
}
SSL_SESSION *ssl_scache_retrieve(server_rec *s, UCHAR *id, int idlen)
{
SSLModConfigRec *mc = myModConfig(s);
SSL_SESSION *sess = NULL;
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
sess = ssl_scache_dbm_retrieve(s, id, idlen);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
sess = ssl_scache_shmht_retrieve(s, id, idlen);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
sess = ssl_scache_shmcb_retrieve(s, id, idlen);
return sess;
}
void ssl_scache_remove(server_rec *s, UCHAR *id, int idlen)
{
SSLModConfigRec *mc = myModConfig(s);
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
ssl_scache_dbm_remove(s, id, idlen);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
ssl_scache_shmht_remove(s, id, idlen);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
ssl_scache_shmcb_remove(s, id, idlen);
return;
}
void ssl_scache_status(server_rec *s, apr_pool_t *p, void (*func)(char *, void *), void *arg)
{
SSLModConfigRec *mc = myModConfig(s);
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
ssl_scache_dbm_status(s, p, func, arg);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
ssl_scache_shmht_status(s, p, func, arg);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
ssl_scache_shmcb_status(s, p, func, arg);
return;
}
void ssl_scache_expire(server_rec *s)
{
SSLModConfigRec *mc = myModConfig(s);
if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
ssl_scache_dbm_expire(s);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMHT)
ssl_scache_shmht_expire(s);
else if (mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
ssl_scache_shmcb_expire(s);
return;
}
/* _________________________________________________________________
**
** SSL Extension to mod_status
** _________________________________________________________________
*/
#if 0 /* NOT YET */
static void ssl_ext_ms_display(request_rec *, int, int);
void ssl_scache_status_register(apr_pool_t *p)
{
/* XXX point mod_status to this update, when it grows the opt fn */
#if 0
ap_hook_register("ap::mod_status::display", ssl_ext_ms_display, AP_HOOK_NOCTX);
#endif
return;
}
static void ssl_ext_ms_display_cb(char *str, void *_r)
{
request_rec *r = (request_rec *)_r;
if (str != NULL)
ap_rputs(str, r);
return;
}
static void ssl_ext_ms_display(request_rec *r, int no_table_report, int short_report)
{
SSLSrvConfigRec *sc = mySrvConfig(r->server);
if (sc == NULL)
return;
if (short_report)
return;
ap_rputs("<hr>\n", r);
ap_rputs("<table cellspacing=0 cellpadding=0>\n", r);
ap_rputs("<tr><td bgcolor=\"#000000\">\n", r);
ap_rputs("<b><font color=\"#ffffff\" face=\"Arial,Helvetica\">SSL/TLS Session Cache Status:</font></b>\r", r);
ap_rputs("</td></tr>\n", r);
ap_rputs("<tr><td bgcolor=\"#ffffff\">\n", r);
ssl_scache_status(r->server, r->pool, ssl_ext_ms_display_cb, r);
ap_rputs("</td></tr>\n", r);
ap_rputs("</table>\n", r);
return;
}
#endif
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