1 files changed, 87 insertions, 0 deletions
diff --git a/common/gettime.c b/common/gettime.c
new file mode 100644
index 000000000..6f656c8e4
--- /dev/null
+++ b/common/gettime.c
@@ -0,0 +1,87 @@
+/* gettime.c - Wrapper for time functions
+ *	Copyright (C) 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "util.h"
+
+static unsigned long timewarp;
+static enum { NORMAL = 0, FROZEN, FUTURE, PAST } timemode;
+
+/* Wrapper for the time(3).  We use this here so we can fake the time
+   for tests */
+time_t 
+gnupg_get_time () 
+{
+  time_t current = time (NULL);
+  if (timemode == NORMAL)
+    return current;
+  else if (timemode == FROZEN)
+    return timewarp;
+  else if (timemode == FUTURE)
+    return current + timewarp;
+  else
+    return current - timewarp;
+}
+
+/* set the time to NEWTIME so that gnupg_get_time returns a time
+   starting with this one.  With FREEZE set to 1 the returned time
+   will never change.  Just for completeness, a value of (time_t)-1
+   for NEWTIME gets you back to rality. Note that this is obviously
+   not thread-safe but this is not required. */
+void
+gnupg_set_time (time_t newtime, int freeze)
+{
+  time_t current = time (NULL);
+
+  if ( newtime == (time_t)-1 || current == newtime)
+    {
+      timemode = NORMAL;
+      timewarp = 0;
+    }
+  else if (freeze)
+    {
+      timemode = FROZEN;
+      timewarp = current;
+    }
+  else if (newtime > current)
+    {
+      timemode = FUTURE;
+      timewarp = newtime - current;
+    }
+  else
+    {
+      timemode = PAST;
+      timewarp = current - newtime;
+    }
+}
+
+/* Returns true when we are in timewarp mode */
+int
+gnupg_faked_time_p (void)
+{
+  return timemode;
+}
+
+
+
+