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allow certificate validity intervals that specify only a
start or stop time (we already support specifying both or neither)

OpenBSD-Commit-ID: 9be486545603c003030bdb5c467d1318b46b4e42
This commit is contained in:
djm@openbsd.org@openbsd.org 2017-11-03 05:14:04 +00:00 committed by Damien Miller
parent fbe8e7ac94
commit d52131a983
2 changed files with 24 additions and 11 deletions
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23
ssh-keygen.1
View File

@ -1,4 +1,4 @@
.\" $OpenBSD: ssh-keygen.1,v 1.144 2017/07/08 18:32:54 jmc Exp $
.\" $OpenBSD: ssh-keygen.1,v 1.145 2017/11/03 05:14:04 djm Exp $
.\"
.\" Author: Tatu Ylonen <ylo@cs.hut.fi>
.\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -35,7 +35,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd $Mdocdate: July 8 2017 $
.Dd $Mdocdate: November 3 2017 $
.Dt SSH-KEYGEN 1
.Os
.Sh NAME
@ -584,13 +584,20 @@ Specify a validity interval when signing a certificate.
A validity interval may consist of a single time, indicating that the
certificate is valid beginning now and expiring at that time, or may consist
of two times separated by a colon to indicate an explicit time interval.
The start time may be specified as a date in YYYYMMDD format, a time
in YYYYMMDDHHMMSS format or a relative time (to the current time) consisting
of a minus sign followed by a relative time in the format described in the
.Pp
The start time may be specified as the string
.Dq always
to indicate the certificate has no specified start time,
a date in YYYYMMDD format, a time in YYYYMMDDHHMMSS format,
a relative time (to the current time) consisting of a minus sign followed by
an interval in the format described in the
TIME FORMATS section of
.Xr sshd_config 5 .
The end time may be specified as a YYYYMMDD date, a YYYYMMDDHHMMSS time or
a relative time starting with a plus character.
.Pp
The end time may be specified as a YYYYMMDD date, a YYYYMMDDHHMMSS time,
a relative time starting with a plus character or the string
.Dq forever
to indicate that the certificate has no expirty date.
.Pp
For example:
.Dq +52w1d
@ -601,6 +608,8 @@ For example:
(valid from 12:30 PM, January 1st, 2010 to 12:30 PM, January 1st, 2011),
.Dq -1d:20110101
(valid from yesterday to midnight, January 1st, 2011).
.Dq -1m:forever
(valid from one minute ago and never expiring).
.It Fl v
Verbose mode.
Causes

12
ssh-keygen.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: ssh-keygen.c,v 1.307 2017/07/07 03:53:12 djm Exp $ */
/* $OpenBSD: ssh-keygen.c,v 1.308 2017/11/03 05:14:04 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -1832,7 +1832,7 @@ parse_absolute_time(const char *s)
s, s + 4, s + 6, s + 8, s + 10, s + 12);
break;
default:
fatal("Invalid certificate time format %s", s);
fatal("Invalid certificate time format \"%s\"", s);
}
memset(&tm, 0, sizeof(tm));
@ -1865,8 +1865,8 @@ parse_cert_times(char *timespec)
/*
* from:to, where
* from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
* to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
* from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "always"
* to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "forever"
*/
from = xstrdup(timespec);
to = strchr(from, ':');
@ -1876,11 +1876,15 @@ parse_cert_times(char *timespec)
if (*from == '-' || *from == '+')
cert_valid_from = parse_relative_time(from, now);
else if (strcmp(from, "always") == 0)
cert_valid_from = 0;
else
cert_valid_from = parse_absolute_time(from);
if (*to == '-' || *to == '+')
cert_valid_to = parse_relative_time(to, now);
else if (strcmp(to, "forever") == 0)
cert_valid_to = ~(u_int64_t)0;
else
cert_valid_to = parse_absolute_time(to);