Adding upstream version 2.4.38.upstream/2.4.38

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 239 insertions, 0 deletions

diff --git a/modules/ssl/ssl_scache.c b/modules/ssl/ssl_scache.c
new file mode 100644
index 0000000..7b4a203
--- /dev/null
+++ b/modules/ssl/ssl_scache.c
@@ -0,0 +1,239 @@
+/* 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);
+}
+