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/*
* lib/krb5/krb/in_tkt_ktb.c
*
* Copyright 1990,1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* krb5_get_in_tkt_with_keytab()
*
*/
#include "k5-int.h"
struct keytab_keyproc_arg {
krb5_keytab keytab;
krb5_principal client;
};
/*
* Key-generator for in_tkt_keytab, below.
* "keyseed" is actually a krb5_keytab, or NULL if we should fetch
* from system area.
*/
static krb5_error_code keytab_keyproc
(krb5_context,
const krb5_enctype,
krb5_data *,
krb5_const_pointer,
krb5_keyblock **);
static krb5_error_code
keytab_keyproc(krb5_context context, krb5_enctype type, krb5_data *salt,
krb5_const_pointer keyseed, krb5_keyblock **key)
{
const struct keytab_keyproc_arg * arg =
(const struct keytab_keyproc_arg *)keyseed;
krb5_keyblock *realkey;
krb5_error_code retval = 0;
krb5_keytab kt_id;
krb5_keytab_entry kt_ent;
kt_id = arg->keytab;
if (!krb5_c_valid_enctype(type))
return KRB5_PROG_ETYPE_NOSUPP;
if (kt_id == NULL)
/* Fetch from default keytab location */
if ((retval = krb5_kt_default(context, &kt_id)))
return retval;
if ((retval = krb5_kt_get_entry(context, kt_id, arg->client,
0, /* don't have vno available */
type, &kt_ent)))
goto cleanup;
if ((retval = krb5_copy_keyblock(context, &kt_ent.key, &realkey))) {
(void) krb5_kt_free_entry(context, &kt_ent);
goto cleanup;
}
(void) krb5_kt_free_entry(context, &kt_ent);
*key = realkey;
cleanup:
if (! arg->keytab)
krb5_kt_close(context, kt_id);
return retval;
}
/*
Similar to krb5_get_in_tkt_with_skey.
Attempts to get an initial ticket for creds->client to use server
creds->server, (realm is taken from creds->client), with options
options, and using creds->times.starttime, creds->times.endtime,
creds->times.renew_till as from, till, and rtime.
creds->times.renew_till is ignored unless the RENEWABLE option is requested.
If addrs is non-NULL, it is used for the addresses requested. If it is
null, the system standard addresses are used.
A succesful call will place the ticket in the credentials cache ccache.
returns system errors, encryption errors
*/
krb5_error_code KRB5_CALLCONV
krb5_get_in_tkt_with_keytab(krb5_context context, krb5_flags options,
krb5_address *const *addrs, krb5_enctype *ktypes,
krb5_preauthtype *pre_auth_types,
krb5_keytab keytab, krb5_ccache ccache,
krb5_creds *creds, krb5_kdc_rep **ret_as_reply)
{
struct keytab_keyproc_arg arg;
arg.keytab = keytab;
arg.client = creds->client;
return(krb5_get_in_tkt(context, options, addrs, ktypes,
pre_auth_types,
keytab_keyproc, (krb5_pointer)&arg,
krb5_kdc_rep_decrypt_proc, 0, creds,
ccache, ret_as_reply));
}
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