From dcf99dab6ac9d82bc6581c4ea0ea85bc4a98736e Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Mon, 3 Jul 2017 13:40:18 +0000 Subject: warn about time machines; suggested by Thomas Klausner --- mandoc.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'mandoc.c') diff --git a/mandoc.c b/mandoc.c index 5b541fa4..3e16d2c6 100644 --- a/mandoc.c +++ b/mandoc.c @@ -1,4 +1,4 @@ -/* $Id: mandoc.c,v 1.102 2017/06/14 01:31:26 schwarze Exp $ */ +/* $Id: mandoc.c,v 1.103 2017/07/03 13:40:19 schwarze Exp $ */ /* * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons * Copyright (c) 2011-2015, 2017 Ingo Schwarze @@ -523,6 +523,7 @@ fail: char * mandoc_normdate(struct roff_man *man, char *in, int ln, int pos) { + char *cp; time_t t; /* No date specified: use today's date. */ @@ -535,13 +536,20 @@ mandoc_normdate(struct roff_man *man, char *in, int ln, int pos) /* Valid mdoc(7) date format. */ if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) || - a2time(&t, "%b %d, %Y", in)) - return time2a(t); + a2time(&t, "%b %d, %Y", in)) { + cp = time2a(t); + if (t > time(NULL) + 86400) + mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse, + ln, pos, cp); + return cp; + } /* In man(7), do not warn about the legacy format. */ if (a2time(&t, "%Y-%m-%d", in) == 0) mandoc_msg(MANDOCERR_DATE_BAD, man->parse, ln, pos, in); + else if (t > time(NULL) + 86400) + mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse, ln, pos, in); else if (man->macroset == MACROSET_MDOC) mandoc_vmsg(MANDOCERR_DATE_LEGACY, man->parse, ln, pos, "Dd %s", in); -- cgit v1.2.3-56-ge451