Upstream tarball 2.2.3upstream/2.2.3

1 files changed, 176 insertions, 0 deletions

diff --git a/modules/ssl/ssl_scache.c b/modules/ssl/ssl_scache.c
new file mode 100644
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--- /dev/null
+++ b/modules/ssl/ssl_scache.c
@@ -0,0 +1,176 @@
+/* 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
+**  _________________________________________________________________
+*/
+
+void ssl_scache_init(server_rec *s, apr_pool_t *p)
+{
+    SSLModConfigRec *mc = myModConfig(s);
+
+    /*
+     * Warn the user that he should use the session cache.
+     * But we can operate without it, of course.
+     */
+    if (mc->nSessionCacheMode == SSL_SCMODE_UNSET) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "Init: Session Cache is not configured "
+                     "[hint: SSLSessionCache]");
+        mc->nSessionCacheMode = SSL_SCMODE_NONE;
+        return;
+    }
+
+    if (mc->nSessionCacheMode == SSL_SCMODE_DBM)
+        ssl_scache_dbm_init(s, p);
+#ifdef HAVE_DISTCACHE
+    else if (mc->nSessionCacheMode == SSL_SCMODE_DC)
+        ssl_scache_dc_init(s, p);
+#endif
+    else if (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_set((const void *)1, userdata_key,
+                                  apr_pool_cleanup_null, s->process->pool);
+            return;
+        }
+        ssl_scache_shmcb_init(s, p);
+    }
+}
+
+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_SHMCB)
+        ssl_scache_shmcb_kill(s);
+#ifdef HAVE_DISTCACHE
+    else if (mc->nSessionCacheMode == SSL_SCMODE_DC)
+        ssl_scache_dc_kill(s);
+#endif
+    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_SHMCB)
+        rv = ssl_scache_shmcb_store(s, id, idlen, expiry, sess);
+#ifdef HAVE_DISTCACHE
+    else if (mc->nSessionCacheMode == SSL_SCMODE_DC)
+        rv = ssl_scache_dc_store(s, id, idlen, expiry, sess);
+#endif
+    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_SHMCB)
+        sess = ssl_scache_shmcb_retrieve(s, id, idlen);
+#ifdef HAVE_DISTCACHE
+    else if (mc->nSessionCacheMode == SSL_SCMODE_DC)
+        sess = ssl_scache_dc_retrieve(s, id, idlen);
+#endif
+    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_SHMCB)
+        ssl_scache_shmcb_remove(s, id, idlen);
+#ifdef HAVE_DISTCACHE
+    else if (mc->nSessionCacheMode == SSL_SCMODE_DC)
+        ssl_scache_dc_remove(s, id, idlen);
+#endif
+    return;
+}
+
+/*  _________________________________________________________________
+**
+**  SSL Extension to mod_status
+**  _________________________________________________________________
+*/
+static int ssl_ext_status_hook(request_rec *r, int flags)
+{
+    SSLSrvConfigRec *sc = mySrvConfig(r->server);
+
+    if (sc == NULL || flags & AP_STATUS_SHORT)
+        return OK;
+
+    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);
+
+    if (sc->mc->nSessionCacheMode == SSL_SCMODE_DBM)
+        ssl_scache_dbm_status(r, flags, r->pool);
+    else if (sc->mc->nSessionCacheMode == SSL_SCMODE_SHMCB)
+        ssl_scache_shmcb_status(r, flags, r->pool);
+#ifdef HAVE_DISTCACHE
+    else if (sc->mc->nSessionCacheMode == SSL_SCMODE_DC)
+        ssl_scache_dc_status(r, flags, r->pool);
+#endif
+
+    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);
+}
+