1 files changed, 51 insertions, 0 deletions
diff --git a/util/miscutil.c b/util/miscutil.c
index 30129634c..14fdc79c0 100644
--- a/util/miscutil.c
+++ b/util/miscutil.c
@@ -152,6 +152,57 @@ isotimestamp (u32 stamp)
     return buffer;
 }
 
+
+/* Scan am ISO timestamp and return an Epoch based timestamp.  The only
+   supported format is "yyyymmddThhmmss" delimited by white space, nul, a
+   colon or a comma.  Returns 0 for an invalid string. */
+u32
+isotime2seconds (const char *string)
+{
+  const char *s;
+  int year, month, day, hour, minu, sec;
+  struct tm tmbuf;
+  int i;
+  time_t result;
+
+  if (!*string)
+    return 0;
+  for (s=string, i=0; i < 8; i++, s++)
+    if (!digitp (s))
+      return 0;
+  if (*s != 'T')
+      return 0;
+  for (s++, i=9; i < 15; i++, s++)
+    if (!digitp (s))
+      return 0;
+  if ( !(!*s || (isascii (*s) && isspace(*s)) || *s == ':' || *s == ','))
+    return 0;  /* Wrong delimiter.  */
+
+  year  = atoi_4 (string);
+  month = atoi_2 (string + 4);
+  day   = atoi_2 (string + 6);
+  hour  = atoi_2 (string + 9);
+  minu  = atoi_2 (string + 11);
+  sec   = atoi_2 (string + 13);
+
+  /* Basic checks.  */
+  if (year < 1970 || month < 1 || month > 12 || day < 1 || day > 31
+      || hour > 23 || minu > 59 || sec > 61 )
+    return 0;
+
+  memset (&tmbuf, 0, sizeof tmbuf);
+  tmbuf.tm_sec  = sec;
+  tmbuf.tm_min  = minu;
+  tmbuf.tm_hour = hour;
+  tmbuf.tm_mday = day;
+  tmbuf.tm_mon  = month-1;
+  tmbuf.tm_year = year - 1900;
+  tmbuf.tm_isdst = -1;
+  result = timegm (&tmbuf);
+  return (result == (time_t)(-1))? 0 : (u32)result;
+}
+
+
 /****************
  * Note: this function returns local time
  */