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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-07 02:04:06 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-07 02:04:06 +0000
commit5dff2d61cc1c27747ee398e04d8e02843aabb1f8 (patch)
treea67c336b406c8227bac912beb74a1ad3cdc55100 /modules/ssl/ssl_scache.c
parentInitial commit. (diff)
downloadapache2-5dff2d61cc1c27747ee398e04d8e02843aabb1f8.tar.xz
apache2-5dff2d61cc1c27747ee398e04d8e02843aabb1f8.zip
Adding upstream version 2.4.38.upstream/2.4.38
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/ssl/ssl_scache.c')
-rw-r--r--modules/ssl/ssl_scache.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/modules/ssl/ssl_scache.c b/modules/ssl/ssl_scache.c
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+++ b/modules/ssl/ssl_scache.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* _ _
+ * _ __ ___ ___ __| | ___ ___| | mod_ssl
+ * | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
+ * | | | | | | (_) | (_| | \__ \__ \ |
+ * |_| |_| |_|\___/ \__,_|___|___/___/_|
+ * |_____|
+ * ssl_scache.c
+ * Session Cache Abstraction
+ */
+ /* ``Open-Source Software: generous
+ programmers from around the world all
+ join forces to help you shoot
+ yourself in the foot for free.''
+ -- Unknown */
+#include "ssl_private.h"
+#include "mod_status.h"
+
+/* _________________________________________________________________
+**
+** Session Cache: Common Abstraction Layer
+** _________________________________________________________________
+*/
+
+apr_status_t ssl_scache_init(server_rec *s, apr_pool_t *p)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ apr_status_t rv;
+ struct ap_socache_hints hints;
+
+ /* The very first invocation of this function will be the
+ * post_config invocation during server startup; do nothing for
+ * this first (and only the first) time through, since the pool
+ * will be immediately cleared anyway. For every subsequent
+ * invocation, initialize the configured cache. */
+ if (ap_state_query(AP_SQ_MAIN_STATE) == AP_SQ_MS_CREATE_PRE_CONFIG)
+ return APR_SUCCESS;
+
+#ifdef HAVE_OCSP_STAPLING
+ if (mc->stapling_cache) {
+ memset(&hints, 0, sizeof hints);
+ hints.avg_obj_size = 1500;
+ hints.avg_id_len = 20;
+ hints.expiry_interval = 300;
+
+ rv = mc->stapling_cache->init(mc->stapling_cache_context,
+ "mod_ssl-stapling", &hints, s, p);
+ if (rv) {
+ ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, APLOGNO(01872)
+ "Could not initialize stapling cache. Exiting.");
+ return ssl_die(s);
+ }
+ }
+#endif
+
+ /*
+ * Warn the user that he should use the session cache.
+ * But we can operate without it, of course.
+ */
+ if (mc->sesscache == NULL) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(01873)
+ "Init: Session Cache is not configured "
+ "[hint: SSLSessionCache]");
+ return APR_SUCCESS;
+ }
+
+ memset(&hints, 0, sizeof hints);
+ hints.avg_obj_size = 150;
+ hints.avg_id_len = 30;
+ hints.expiry_interval = 30;
+
+ rv = mc->sesscache->init(mc->sesscache_context, "mod_ssl-session", &hints, s, p);
+ if (rv) {
+ ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, APLOGNO(01874)
+ "Could not initialize session cache. Exiting.");
+ return ssl_die(s);
+ }
+
+ return APR_SUCCESS;
+}
+
+void ssl_scache_kill(server_rec *s)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+
+ if (mc->sesscache) {
+ mc->sesscache->destroy(mc->sesscache_context, s);
+ }
+
+#ifdef HAVE_OCSP_STAPLING
+ if (mc->stapling_cache) {
+ mc->stapling_cache->destroy(mc->stapling_cache_context, s);
+ }
+#endif
+
+}
+
+BOOL ssl_scache_store(server_rec *s, IDCONST UCHAR *id, int idlen,
+ apr_time_t expiry, SSL_SESSION *sess,
+ apr_pool_t *p)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ unsigned char encoded[MODSSL_SESSION_MAX_DER], *ptr;
+ unsigned int len;
+ apr_status_t rv;
+
+ /* Serialise the session. */
+ len = i2d_SSL_SESSION(sess, NULL);
+ if (len > sizeof encoded) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(01875)
+ "session is too big (%u bytes)", len);
+ return FALSE;
+ }
+
+ ptr = encoded;
+ len = i2d_SSL_SESSION(sess, &ptr);
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_on(s);
+ }
+
+ rv = mc->sesscache->store(mc->sesscache_context, s, id, idlen,
+ expiry, encoded, len, p);
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_off(s);
+ }
+
+ return rv == APR_SUCCESS ? TRUE : FALSE;
+}
+
+SSL_SESSION *ssl_scache_retrieve(server_rec *s, IDCONST UCHAR *id, int idlen,
+ apr_pool_t *p)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ unsigned char dest[MODSSL_SESSION_MAX_DER];
+ unsigned int destlen = MODSSL_SESSION_MAX_DER;
+ const unsigned char *ptr;
+ apr_status_t rv;
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_on(s);
+ }
+
+ rv = mc->sesscache->retrieve(mc->sesscache_context, s, id, idlen,
+ dest, &destlen, p);
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_off(s);
+ }
+
+ if (rv != APR_SUCCESS) {
+ return NULL;
+ }
+
+ ptr = dest;
+
+ return d2i_SSL_SESSION(NULL, &ptr, destlen);
+}
+
+void ssl_scache_remove(server_rec *s, IDCONST UCHAR *id, int idlen,
+ apr_pool_t *p)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_on(s);
+ }
+
+ mc->sesscache->remove(mc->sesscache_context, s, id, idlen, p);
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_off(s);
+ }
+}
+
+/* _________________________________________________________________
+**
+** SSL Extension to mod_status
+** _________________________________________________________________
+*/
+static int ssl_ext_status_hook(request_rec *r, int flags)
+{
+ SSLModConfigRec *mc = myModConfig(r->server);
+
+ if (mc == NULL || mc->sesscache == NULL)
+ return OK;
+
+ if (!(flags & AP_STATUS_SHORT)) {
+ 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);
+ }
+ else {
+ ap_rputs("TLSSessionCacheStatus\n", r);
+ }
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_on(r->server);
+ }
+
+ mc->sesscache->status(mc->sesscache_context, r, flags);
+
+ if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
+ ssl_mutex_off(r->server);
+ }
+
+ if (!(flags & AP_STATUS_SHORT)) {
+ ap_rputs("</td></tr>\n", r);
+ ap_rputs("</table>\n", r);
+ }
+
+ return OK;
+}
+
+void ssl_scache_status_register(apr_pool_t *p)
+{
+ APR_OPTIONAL_HOOK(ap, status_hook, ssl_ext_status_hook, NULL, NULL,
+ APR_HOOK_MIDDLE);
+}
+