Received: (qmail 17424 invoked by uid 2012); 31 Oct 1997 21:27:51 -0000
Message-Id: <19971031212751.17423.qmail@hyperreal.org>
Date: 31 Oct 1997 21:27:51 -0000
From: Paul Eggert <eggert@twinsun.com>
Reply-To: eggert@twinsun.com
To: apbugs@hyperreal.org
Subject: year-3000 bug in two-digit cookie expiration years
X-Send-Pr-Version: 3.2

>Number:         1342
>Category:       mod_usertrack
>Synopsis:       year-3000 bug in two-digit cookie expiration years
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          closed
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Fri Oct 31 13:30:01 PST 1997
>Last-Modified:  Wed Nov  5 03:24:41 PST 1997
>Originator:     eggert@twinsun.com
>Organization:
>Release:        1.2.4
>Environment:
SunOS shade.twinsun.com 5.6 Generic sun4u sparc SUNW,Ultra-1
>Description:
There's a year-3000 bug in the two-digit years in cookie expiration dates.
In 3000, tm_year is 200, so subtracting 100 stops working.

I know, I know, I'm being picky, but you'll thank me on Jan 1, 3000,
when you're running Apache on your 64-bit time_t host!
>How-To-Repeat:

>Fix:
--- mod_usertrack.c	1997/03/07 14:15:45	1.2.4.0
+++ mod_usertrack.c	1997/10/31 21:19:05	1.2.4.1
@@ -176,5 +176,5 @@ void make_cookie(request_rec *r)
 	      COOKIE_NAME, cookiebuf, days[tms->tm_wday],
 	      tms->tm_mday, month_snames[tms->tm_mon],
-	      (tms->tm_year >= 100) ? tms->tm_year - 100 : tms->tm_year,
+	      tms->tm_year % 100,
 	      tms->tm_hour, tms->tm_min, tms->tm_sec);
     }
%0
>Audit-Trail:
State-Changed-From-To: open-closed
State-Changed-By: dgaudet
State-Changed-When: Wed Nov  5 03:24:41 PST 1997
State-Changed-Why:
Actually I think it's a year 2100 bug ... but we applied yer
patch to 1.3b3 anyhow :)

Dean
>Unformatted: