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/* $KTH: mk_auth.c,v 1.4 1997/04/01 08:18:35 joda Exp $ */
/*
* Copyright (c) 1995, 1996, 1997 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Kungliga Tekniska
* Högskolan and its contributors.
*
* 4. 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.
*/
#include "krb_locl.h"
/*
* Generate an authenticator for service.instance@realm.
* instance is canonicalized by `krb_get_phost'
* realm is set to the local realm if realm == NULL
* The ticket acquired by `krb_mk_req' is returned in `ticket' and the
* authenticator in `buf'.
* Options control the behaviour (see krb_sendauth).
*/
int
krb_mk_auth(int32_t options,
KTEXT ticket,
char *service,
char *instance,
char *realm,
u_int32_t checksum,
char *version,
KTEXT buf)
{
char realinst[INST_SZ];
char realrealm[REALM_SZ];
int ret;
unsigned char *p;
if (options & KOPT_DONT_CANON)
strncpy(realinst, instance, sizeof(realinst));
else
strncpy(realinst, krb_get_phost (instance), sizeof(realinst));
if (realm == NULL) {
ret = krb_get_lrealm (realrealm, 1);
if (ret != KSUCCESS)
return ret;
realm = realrealm;
}
if(!(options & KOPT_DONT_MK_REQ)) {
ret = krb_mk_req (ticket, service, realinst, realm, checksum);
if (ret != KSUCCESS)
return ret;
}
p = buf->dat;
memcpy (p, KRB_SENDAUTH_VERS, KRB_SENDAUTH_VLEN);
p += KRB_SENDAUTH_VLEN;
memcpy (p, version, KRB_SENDAUTH_VLEN);
p += KRB_SENDAUTH_VLEN;
p += krb_put_int(ticket->length, p, 4);
memcpy(p, ticket->dat, ticket->length);
p += ticket->length;
buf->length = p - buf->dat;
return KSUCCESS;
}
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