--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlib/bundling/BundleTimestamp.cc	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,64 @@
+/*
+ *    Copyright 2006 Intel Corporation
+ * 
+ *    Licensed 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <dtn-config.h>
+#endif
+
+#include <time.h>
+#include <oasys/debug/Log.h>
+
+#include "BundleTimestamp.h"
+
+namespace dtn {
+
+/**
+ * The number of seconds between 1/1/1970 and 1/1/2000.
+ */
+u_int32_t BundleTimestamp::TIMEVAL_CONVERSION = 946684800;
+
+u_int32_t
+BundleTimestamp::get_current_time()
+{
+    struct timeval now;
+    ::gettimeofday(&now, 0);
+    
+    ASSERT((u_int)now.tv_sec >= TIMEVAL_CONVERSION);
+    return now.tv_sec - TIMEVAL_CONVERSION;
+}
+
+bool
+BundleTimestamp::check_local_clock()
+{
+    struct timeval now;
+    ::gettimeofday(&now, 0);
+
+    if ((u_int)now.tv_sec < TIMEVAL_CONVERSION) {
+        logf("/dtn/bundle/timestamp", oasys::LOG_ERR,
+             "invalid local clock setting: "
+             "current time '%s' is before Jan 1, 2000",
+             ctime((const time_t*)&now.tv_sec));
+
+        log_err_p("/dtn/bundle/timestamp",
+                          "invalid local clock setting: "
+                          "current time '%s' is before Jan 1, 2000",
+                          ctime((const time_t*)&now.tv_sec));
+        return false;
+    }
+
+    return true;
+}
+} // namespace dtn