Subject: Re: bin/28450: date(1) does not validate its input and accepts and processes
To: David H.Gutteridge <email@example.com>
From: Robert Elz <kre@munnari.OZ.AU>
Date: 12/07/2004 13:42:26
Date: Tue, 7 Dec 2004 0:23:47 -0500
From: "David H.Gutteridge" <firstname.lastname@example.org>
| fsdb(8) [...] and that mktime() likes what it receives (which as we
| know from date(1) isn't a thorough arbiter of correct understanding
| of human intention).
mktime() is explicitly not intended to require its input be a "rational"
human type representation of a time. That's to allow
tm = localtime(t);
t = mktime(tm);
type things, without having to check that the incremented month (or
any other field) remains in bounds - mktime compensates.
The effect of this, of course, is that mktime() is useless as a date/time
string input validator.
It sounds from your research as if there should be one, perhaps in libutil
or something, that everyone else can use. I guess the tricky bit is
making it correctly handle the various formats (required inputs) of the