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| author | Ingo Schwarze <schwarze@openbsd.org> | 2017-07-03 13:40:18 +0000 |
|---|---|---|
| committer | Ingo Schwarze <schwarze@openbsd.org> | 2017-07-03 13:40:18 +0000 |
| commit | 7e3f3a2b83bdaf6b8929d44bacefb12730122d72 (patch) | |
| tree | 4a9b9f72b3ff11e3a1fd84ad2c448db55af1d26e /mandoc.c | |
| parent | c3e510863e8794c67068a3e8afc61d9af760144f (diff) | |
| download | mandoc-7e3f3a2b83bdaf6b8929d44bacefb12730122d72.tar.gz | |
warn about time machines; suggested by Thomas Klausner <wiz @ NetBSD>
Diffstat (limited to 'mandoc.c')
| -rw-r--r-- | mandoc.c | 12 |
1 files changed, 10 insertions, 2 deletions
@@ -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); |