Date: Sat, 8 Jul 1995 09:50:01 -0700 From: mpp@legarto.minn.net To: freebsd-bugs Subject: bin/603: chpass screws up password change/expire fields Message-ID: <199507081650.JAA09113@freefall.cdrom.com> In-Reply-To: Your message of Sat, 8 Jul 1995 11:46:50 -0500 <199507081646.LAA06672@mpp.minn.net>
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>Number: 603
>Category: bin
>Synopsis: chpass screws up password change/expire fields
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs (FreeBSD bugs mailing list)
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Jul 8 09:50:00 1995
>Originator: Mike Pritchard
>Organization:
>Release: FreeBSD 2.0-BUILT-19950628 i386
>Environment:
>Description:
If the super-user uses chpass to edit a users password file entry,
and that user happens to have a password change/expire date set,
the change/expire date will be advanced by 1 day when the edit
is complete. The date in question has to fall within the same
daylight savings time period. E.g. setting a date of 8/1/95 will cause
the date to advance on each edit, but a date of 12/1/95 will not.
>How-To-Repeat:
Run chpass and give an account a password expiration date.
Run chpass again and note the current expiration date and then
change something so that chpass will re-write the password file.
Run chpass one last time and note that the expiration date has
now advanced by one day. Repeat as desired.
>Fix:
Fix the atot() routine in chpass/util.c to use mktime() to generate
the time fields, instead of doing all of the calculations itself
and getting them wrong sometimes.
--- orig/util.c Sat Jul 8 10:28:36 1995
+++ ./util.c Sat Jul 8 11:33:23 1995
@@ -49,8 +49,6 @@
#include "chpass.h"
#include "pathnames.h"
-static int dmsize[] =
- { -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static char *months[] =
{ "January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November",
@@ -114,15 +112,15 @@
year += TM_YEAR_BASE;
if (year <= EPOCH_YEAR)
bad: return (1);
- tval = isleap(year) && month > 2;
- for (--year; year >= EPOCH_YEAR; --year)
- tval += isleap(year) ?
- DAYSPERLYEAR : DAYSPERNYEAR;
- while (--month)
- tval += dmsize[month];
- tval += day;
- tval = tval * HOURSPERDAY * MINSPERHOUR * SECSPERMIN;
- tval -= lt->tm_gmtoff;
+ lt->tm_year = year - TM_YEAR_BASE;
+ lt->tm_mon = month - 1;
+ lt->tm_mday = day;
+ lt->tm_hour = 0;
+ lt->tm_min = 0;
+ lt->tm_sec = 0;
+ lt->tm_isdst = -1;
+ if ((tval = mktime(lt)) < 0)
+ return (1);
*store = tval;
return (0);
}
>Audit-Trail:
>Unformatted:
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