1 files changed, 88 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/roken/timegm.c b/crypto/heimdal/lib/roken/timegm.c
new file mode 100644
index 0000000..41eb487
--- /dev/null
+++ b/crypto/heimdal/lib/roken/timegm.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 1997, 2006 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+RCSID("$Id: timegm.c 18606 2006-10-19 16:19:10Z lha $");
+#endif
+
+#include "roken.h"
+
+static int
+is_leap(unsigned y)
+{
+    y += 1900;
+    return (y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0);
+}
+
+/* 
+ * XXX This is a simplifed version of timegm, it needs to support out of
+ * bounds values.
+ */
+
+time_t
+rk_timegm (struct tm *tm)
+{
+  static const unsigned ndays[2][12] ={
+    {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
+    {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}};
+  time_t res = 0;
+  unsigned i;
+
+  if (tm->tm_year < 0) 
+      return -1;
+  if (tm->tm_mon < 0 || tm->tm_mon > 11) 
+      return -1;
+  if (tm->tm_mday < 1 || tm->tm_mday > ndays[is_leap(tm->tm_year)][tm->tm_mon])
+      return -1;
+  if (tm->tm_hour < 0 || tm->tm_hour > 23) 
+      return -1;
+  if (tm->tm_min < 0 || tm->tm_min > 59) 
+      return -1;
+  if (tm->tm_sec < 0 || tm->tm_sec > 59) 
+      return -1;
+
+  for (i = 70; i < tm->tm_year; ++i)
+    res += is_leap(i) ? 366 : 365;
+
+  for (i = 0; i < tm->tm_mon; ++i)
+    res += ndays[is_leap(tm->tm_year)][i];
+  res += tm->tm_mday - 1;
+  res *= 24;
+  res += tm->tm_hour;
+  res *= 60;
+  res += tm->tm_min;
+  res *= 60;
+  res += tm->tm_sec;
+  return res;
+}