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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: kimpersonate.1 20259 2007-02-17 23:49:54Z lha $
.\"
.Dd September 18, 2006
.Dt KERBEROS 1
.Os Heimdal
.Sh NAME
.Nm kimpersonate
.Nd
impersonate a user when there exist a srvtab, keyfile or KeyFile
.Sh SYNOPSIS
.Nm
.Oo Fl s Ar string \*(Ba Xo
.Fl -server= Ns Ar string Oc
.Xc
.Oo Fl c Ar string \*(Ba Xo
.Fl -client= Ns Ar string Oc
.Xc
.Oo Fl k Ar string \*(Ba Xo
.Fl -keytab= Ns Ar string Oc
.Xc
.Op Fl 5 | Fl -krb5
.Oo Fl e Ar integer \*(Ba Xo
.Fl -expire-time= Ns Ar integer Oc
.Xc
.Oo Fl a Ar string \*(Ba Xo
.Fl -client-address= Ns Ar string Oc
.Xc
.Oo Fl t Ar string \*(Ba Xo
.Fl -enc-type= Ns Ar string Oc
.Xc
.Oo Fl f Ar string \*(Ba Xo
.Fl -ticket-flags= Ns Ar string Oc
.Xc
.Op Fl -verbose
.Op Fl -version
.Op Fl -help
.Sh DESCRIPTION
The
.Nm
program creates a "fake" ticket using the service-key of the service.
The service key can be read from a Kerberos 5 keytab, AFS KeyFile or
(if compiled with support for Kerberos 4) a Kerberos 4 srvtab.
Supported options:
.Bl -tag -width Ds
.It Xo
.Fl s Ar string Ns ,
.Fl -server= Ns Ar string
.Xc
name of server principal
.It Xo
.Fl c Ar string Ns ,
.Fl -client= Ns Ar string
.Xc
name of client principal
.It Xo
.Fl k Ar string Ns ,
.Fl -keytab= Ns Ar string
.Xc
name of keytab file
.It Xo
.Fl 5 Ns ,
.Fl -krb5
.Xc
create a Kerberos 5 ticket
.It Xo
.Fl e Ar integer Ns ,
.Fl -expire-time= Ns Ar integer
.Xc
lifetime of ticket in seconds
.It Xo
.Fl a Ar string Ns ,
.Fl -client-address= Ns Ar string
.Xc
address of client
.It Xo
.Fl t Ar string Ns ,
.Fl -enc-type= Ns Ar string
.Xc
encryption type
.It Xo
.Fl f Ar string Ns ,
.Fl -ticket-flags= Ns Ar string
.Xc
ticket flags for krb5 ticket
.It Xo
.Fl -verbose
.Xc
Verbose output
.It Xo
.Fl -version
.Xc
Print version
.It Xo
.Fl -help
.Xc
.El
.Sh FILES
Uses
.Pa /etc/krb5.keytab,
.Pa /etc/srvtab
and
.Pa /usr/afs/etc/KeyFile
when avalible and the the
.Fl k
is used with 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 .
.Sh SEE ALSO
.Xr kinit 1 ,
.Xr klist 1
.Sh AUTHORS
Love Hornquist Astrand <lha@kth.se>
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