[openssh-commits] [openssh] 12/15: upstream: add fmt_timeframe() (from bgpd) to format a time

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djm pushed a commit to branch master
in repository openssh.

commit 756c6f66aee83a5862a6f936a316f761532f3320
Author: djm at openbsd.org <djm at openbsd.org>
Date:   Tue May 26 01:06:52 2020 +0000

    upstream: add fmt_timeframe() (from bgpd) to format a time
    
    interval in a human- friendly format. Switch copyright for this file from BSD
    to MIT to make it easier to add Henning's copyright for this function. ok
    markus@
    
    OpenBSD-Commit-ID: 414a831c662df7e68893e5233e86f2cac081ccf9
---
 misc.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++-------------------
 misc.h |  3 ++-
 2 files changed, 53 insertions(+), 21 deletions(-)

diff --git a/misc.c b/misc.c
index 554ceb0b..3e661ac7 100644
--- a/misc.c
+++ b/misc.c
@@ -1,29 +1,23 @@
-/* $OpenBSD: misc.c,v 1.147 2020/04/25 06:59:36 dtucker Exp $ */
+/* $OpenBSD: misc.c,v 1.148 2020/05/26 01:06:52 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
- * Copyright (c) 2005,2006 Damien Miller.  All rights reserved.
+ * Copyright (c) 2005-2020 Damien Miller.  All rights reserved.
+ * Copyright (c) 2004 Henning Brauer <henning at openbsd.org>
  *
- * 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.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+
 #include "includes.h"
 
 #include <sys/types.h>
@@ -551,6 +545,43 @@ convtime(const char *s)
 	return total;
 }
 
+#define TF_BUFS	8
+#define TF_LEN	9
+
+const char *
+fmt_timeframe(time_t t)
+{
+	char		*buf;
+	static char	 tfbuf[TF_BUFS][TF_LEN];	/* ring buffer */
+	static int	 idx = 0;
+	unsigned int	 sec, min, hrs, day;
+	unsigned long long	week;
+
+	buf = tfbuf[idx++];
+	if (idx == TF_BUFS)
+		idx = 0;
+
+	week = t;
+
+	sec = week % 60;
+	week /= 60;
+	min = week % 60;
+	week /= 60;
+	hrs = week % 24;
+	week /= 24;
+	day = week % 7;
+	week /= 7;
+
+	if (week > 0)
+		snprintf(buf, TF_LEN, "%02lluw%01ud%02uh", week, day, hrs);
+	else if (day > 0)
+		snprintf(buf, TF_LEN, "%01ud%02uh%02um", day, hrs, min);
+	else
+		snprintf(buf, TF_LEN, "%02u:%02u:%02u", hrs, min, sec);
+
+	return (buf);
+}
+
 /*
  * Returns a standardized host+port identifier string.
  * Caller must free returned string.
diff --git a/misc.h b/misc.h
index 4a05db2d..8e4234b6 100644
--- a/misc.h
+++ b/misc.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: misc.h,v 1.84 2020/01/24 23:54:40 djm Exp $ */
+/* $OpenBSD: misc.h,v 1.85 2020/05/26 01:06:52 djm Exp $ */
 
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
@@ -66,6 +66,7 @@ int	 parse_user_host_path(const char *, char **, char **, char **);
 int	 parse_user_host_port(const char *, char **, char **, int *);
 int	 parse_uri(const char *, const char *, char **, char **, int *, char **);
 long	 convtime(const char *);
+const char *fmt_timeframe(time_t t);
 char	*tilde_expand_filename(const char *, uid_t);
 char	*percent_expand(const char *, ...) __attribute__((__sentinel__));
 char	*tohex(const void *, size_t);

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