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.\" Copyright (c) 2002 - 2007 Kungliga Tekniska Högskolan
.\" (Royal Institute of Technology, Stockholm, Sweden).
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" 3. Neither the name of the Institute nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id$
.\"
.Dd September 18, 2006
.Dt KIMPERSONATE 8
.Os
.Sh NAME
.Nm kimpersonate
.Nd impersonate a user when there exist a keyfile or KeyFile
.Sh SYNOPSIS
.Nm
.Op Fl s Ar string \*(Ba Fl Fl ccache= Ns Ar string
.Op Fl s Ar string \*(Ba Fl Fl server= Ns Ar string
.Op Fl c Ar string \*(Ba Fl Fl client= Ns Ar string
.Op Fl k Ar string \*(Ba Fl Fl keytab= Ns Ar string
.Op Fl 5 | Fl Fl krb5
.Op Fl A | Fl Fl add
.Op Fl R | Fl Fl referral
.Op Fl e Ar integer \*(Ba Fl Fl expire-time= Ns Ar integer
.Op Fl a Ar string \*(Ba Fl Fl client-address= Ns Ar string
.Op Fl t Ar string \*(Ba Fl Fl enc-type= Ns Ar string
.Op Fl Fl session-enc-type= Ns Ar string
.Op Fl f Ar string \*(Ba Fl Fl ticket-flags= Ns Ar string
.Op Fl Fl verbose
.Op Fl Fl version
.Op Fl Fl help
.Sh DESCRIPTION
The
.Nm
program creates a "fake" ticket using the service-key of the service and
stores it in the given (or default) ccache. This is useful for testing.
The service key can be read from a Kerberos 5 keytab or AFS KeyFile.
Supported options:
.Bl -tag -width Ds
.It Fl Fl ccache= Ns Ar string
ccache into which to store the ticket
.It Fl s Ar string Ns , Fl Fl server= Ns Ar string
name of server principal
.It Fl c Ar string Ns , Fl Fl client= Ns Ar string
name of client principal
.It Fl k Ar string Ns , Fl Fl keytab= Ns Ar string
name of keytab file
.It Fl 5 Ns , Fl Fl krb5
create a Kerberos 5 ticket
.It Fl A Ns , Fl Fl add
don't re-initialize the ccache, instead add the ticket to an existing
ccache.
.It Fl R Ns , Fl Fl referral
simulate a referrals-based KDC client by storing two entries, one with
the empty realm for the service principal name.
.It Fl e Ar integer Ns , Fl Fl expire-time= Ns Ar integer
lifetime of ticket in seconds
.It Fl a Ar string Ns , Fl Fl client-address= Ns Ar string
address of client
.It Fl t Ar string Ns , Fl Fl enc-type= Ns Ar string
encryption type (defaults to "aes256-cts-hmac-sha1-96")
.It Fl Fl session-enc-type= Ns Ar string
session encryption type (defaults to enc-type or "des-cbc-crc" for afs service tickets)
.It Fl f Ar string Ns , Fl Fl ticket-flags= Ns Ar string
ticket flags for krb5 ticket
.It Fl Fl verbose
Verbose output
.It Fl Fl version
Print version
.It Fl Fl help
.El
.Sh FILES
Uses
.Pa /etc/krb5.keytab,
and
.Pa /usr/afs/etc/KeyFile
when available and the
.Fl k
option is used with an appropriate prefix.
.Sh EXAMPLES
.Nm
can be used in
.Nm samba
root preexec option
or for debugging.
.Nm
-s host/hummel.e.kth.se@E.KTH.SE -c lha@E.KTH.SE -5
will create a Kerberos 5 ticket for lha@E.KTH.SE for the host
hummel.e.kth.se if there exists a keytab entry for it in
.Pa /etc/krb5.keytab .
.Pp
In combination with the
.Nm ktutil
command, this is useful for testing. For example,
.Pp
.Nm ktutil
-k tkt add -p host/foo.test@TEST -V2 -e aes256-cts-hmac-sha1-96 -r
.Pp
.Nm
--cache=tcc -s host/foo.test@TEST -c jdoe@TEST -k tkt --referral
.Sh SEE ALSO
.Xr kinit 1 ,
.Xr klist 1
.Sh AUTHORS
Love Hornquist Astrand <lha@kth.se>
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