Diff: dtls_time.c

Revision:

0:04990d454f45

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dtls_time.c	Thu Oct 10 21:38:07 2013 +0000
@@ -0,0 +1,92 @@
+/* dtls -- a very basic DTLS implementation
+ *
+ * Copyright (C) 2011--2013 Olaf Bergmann <bergmann@tzi.org>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/**
+ * @file dtls_time.c
+ * @brief Clock Handling
+ */
+
+#include "dtls_time.h"
+#include "bsd_socket.h"
+
+#ifdef MBED
+/**
+ * gettimeofday() not in mbed
+ */
+void gettimeofday(struct timeval* t, void* timezone)
+{       
+    t->tv_sec = time(NULL);
+    t->tv_usec = 0;                         /* 1sec precision only */ 
+
+}
+
+#endif
+
+#ifdef WITH_CONTIKI
+clock_time_t dtls_clock_offset;
+
+void
+dtls_clock_init(void) {
+  clock_init();
+  dtls_clock_offset = clock_time();
+}
+
+void
+dtls_ticks(dtls_tick_t *t) {
+  *t = clock_time();
+}
+
+#else /* WITH_CONTIKI */
+
+time_t dtls_clock_offset;
+
+void
+dtls_clock_init(void) {
+#ifdef HAVE_TIME_H
+  dtls_clock_offset = time(NULL);
+#else
+#  ifdef __GNUC__
+  /* Issue a warning when using gcc. Other prepropressors do 
+   *  not seem to have a similar feature. */ 
+#   warning "cannot initialize clock"
+#  endif
+  dtls_clock_offset = 0;
+#endif
+}
+
+void dtls_ticks(dtls_tick_t *t) {
+#ifdef HAVE_SYS_TIME_H
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  *t = (tv.tv_sec - dtls_clock_offset) * DTLS_TICKS_PER_SECOND 
+    + (tv.tv_usec * DTLS_TICKS_PER_SECOND / 1000000);
+#else
+#error "clock not implemented"
+#endif
+}
+
+#endif /* WITH_CONTIKI */
+
+