e7e0b34988
several new kerberos related libraries and applications to FreeBSD:
o kgetcred(1) allows one to manually get a ticket for a particular service.
o kf(1) securily forwards ticket to another host through an authenticated
and encrypted stream.
o kcc(1) is an umbrella program around klist(1), kswitch(1), kgetcred(1)
and other user kerberos operations. klist and kswitch are just symlinks
to kcc(1) now.
o kswitch(1) allows you to easily switch between kerberos credentials if
you're running KCM.
o hxtool(1) is a certificate management tool to use with PKINIT.
o string2key(1) maps a password into key.
o kdigest(8) is a userland tool to access the KDC's digest interface.
o kimpersonate(8) creates a "fake" ticket for a service.
We also now install manpages for some lirbaries that were not installed
before, libheimntlm and libhx509.
- The new HEIMDAL version no longer supports Kerberos 4. All users are
recommended to switch to Kerberos 5.
- Weak ciphers are now disabled by default. To enable DES support (used
by telnet(8)), use "allow_weak_crypto" option in krb5.conf.
- libtelnet, pam_ksu and pam_krb5 are now compiled with error on warnings
disabled due to the function they use (krb5_get_err_text(3)) being
deprecated. I plan to work on this next.
- Heimdal's KDC now require sqlite to operate. We use the bundled version
and install it as libheimsqlite. If some other FreeBSD components will
require it in the future we can rename it to libbsdsqlite and use for these
components as well.
- This is not a latest Heimdal version, the new one was released while I was
working on the update. I will update it to 1.5.2 soon, as it fixes some
important bugs and security issues.
174 lines
4.8 KiB
Groff
174 lines
4.8 KiB
Groff
.\" Copyright (c) 2004 Kungliga Tekniska Högskolan
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.\" (Royal Institute of Technology, Stockholm, Sweden).
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\"
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\"
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" 3. Neither the name of the Institute nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\" $Id$
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.\"
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.Dd October 31, 2004
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.Dt PARSE_TIME 3
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.Os HEIMDAL
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.Sh NAME
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.Nm parse_time ,
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.Nm print_time_table ,
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.Nm unparse_time ,
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.Nm unparse_time_approx ,
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.Nd parse and unparse time intervals
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.Sh LIBRARY
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The roken library (libroken, -lroken)
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.Sh SYNOPSIS
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.Fd #include <parse_time.h>
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.Ft int
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.Fn parse_time "const char *timespec" "const char *def_unit"
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.Ft void
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.Fn print_time_table "FILE *f"
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.Ft size_t
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.Fn unparse_time "int seconds" "char *buf" "size_t len"
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.Ft size_t
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.Fn unparse_time_approx "int seconds" "char *buf" "size_t len"
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.Sh DESCRIPTION
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The
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.Fn parse_time
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function converts a the period of time specified in
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into a number of seconds.
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The
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.Fa timespec
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can be any number of
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.Aq number unit
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pairs separated by comma and whitespace. The number can be
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negative. Number without explicit units are taken as being
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.Fa def_unit .
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.Pp
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The
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.Fn unparse_time
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and
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.Fn unparse_time_approx
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does the opposite of
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.Fn parse_time ,
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that is they take a number of seconds and express that as human
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readable string.
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.Fa unparse_time
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produces an exact time, while
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.Fa unparse_time_approx
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restricts the result to only include one units.
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.Pp
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.Fn print_time_table
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prints a descriptive list of available units on the passed file
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descriptor.
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.Pp
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The possible units include:
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.Bl -tag -width "month" -compact -offset indent
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.It Li second , s
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.It Li minute , m
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.It Li hour , h
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.It day
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.It week
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seven days
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.It month
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30 days
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.It year
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365 days
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.El
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.Pp
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Units names can be arbitrarily abbreviated (as long as they are
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unique).
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.Sh RETURN VALUES
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.Fn parse_time
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returns the number of seconds that represents the expression in
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.Fa timespec
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or -1 on error.
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.Fn unparse_time
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and
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.Fn unparse_time_approx
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return the number of characters written to
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.Fa buf .
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if the return value is greater than or equal to the
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.Fa len
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argument, the string was too short and some of the printed characters
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were discarded.
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.Sh EXAMPLES
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.Bd -literal
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#include <stdio.h>
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#include <parse_time.h>
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int
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main(int argc, char **argv)
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{
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int i;
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int result;
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char buf[128];
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print_time_table(stdout);
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for (i = 1; i < argc; i++) {
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result = parse_time(argv[i], "second");
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if(result == -1) {
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fprintf(stderr, "%s: parse error\\n", argv[i]);
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continue;
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}
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printf("--\\n");
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printf("parse_time = %d\\n", result);
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unparse_time(result, buf, sizeof(buf));
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printf("unparse_time = %s\\n", buf);
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unparse_time_approx(result, buf, sizeof(buf));
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printf("unparse_time_approx = %s\\n", buf);
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}
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return 0;
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}
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.Ed
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.Bd -literal
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$ ./a.out "1 minute 30 seconds" "90 s" "1 y -1 s"
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1 year = 365 days
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1 month = 30 days
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1 week = 7 days
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1 day = 24 hours
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1 hour = 60 minutes
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1 minute = 60 seconds
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1 second
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--
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parse_time = 90
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unparse_time = 1 minute 30 seconds
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unparse_time_approx = 1 minute
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--
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parse_time = 90
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unparse_time = 1 minute 30 seconds
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unparse_time_approx = 1 minute
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--
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parse_time = 31535999
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unparse_time = 12 months 4 days 23 hours 59 minutes 59 seconds
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unparse_time_approx = 12 months
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.Ed
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.Sh BUGS
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Since
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.Fn parse_time
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returns -1 on error there is no way to parse "minus one second".
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Currently "s" at the end of units is ignored. This is a hack for
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English plural forms. If these functions are ever localised, this
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scheme will have to change.
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.\".Sh SEE ALSO
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.\".Xr parse_bytes 3
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.\".Xr parse_units 3
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