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/*
* Copyright (c) 1995, 1996, 1997, 1998 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.
*/
#include "krb_locl.h"
RCSID("$Id: kdc_reply.c,v 1.12 1999/12/02 16:58:42 joda Exp $");
static int little_endian; /* XXX ugly */
int
kdc_reply_cred(KTEXT cip, CREDENTIALS *cred)
{
unsigned char *p = cip->dat;
memcpy(cred->session, p, 8);
p += 8;
if(p + strlen((char*)p) > cip->dat + cip->length)
return INTK_BADPW;
p += krb_get_string(p, cred->service, sizeof(cred->service));
if(p + strlen((char*)p) > cip->dat + cip->length)
return INTK_BADPW;
p += krb_get_string(p, cred->instance, sizeof(cred->instance));
if(p + strlen((char*)p) > cip->dat + cip->length)
return INTK_BADPW;
p += krb_get_string(p, cred->realm, sizeof(cred->realm));
if(p + 3 > cip->dat + cip->length)
return INTK_BADPW;
cred->lifetime = *p++;
cred->kvno = *p++;
cred->ticket_st.length = *p++;
if(p + cred->ticket_st.length + 4 > cip->dat + cip->length)
return INTK_BADPW;
memcpy(cred->ticket_st.dat, p, cred->ticket_st.length);
p += cred->ticket_st.length;
p += krb_get_int(p, (u_int32_t *)&cred->issue_date, 4, little_endian);
return KSUCCESS;
}
int
kdc_reply_cipher(KTEXT reply, KTEXT cip)
{
unsigned char *p;
unsigned char pvno;
unsigned char type;
char aname[ANAME_SZ];
char inst[INST_SZ];
char realm[REALM_SZ];
u_int32_t kdc_time;
u_int32_t exp_date;
u_int32_t clen;
p = reply->dat;
pvno = *p++;
if (pvno != KRB_PROT_VERSION )
return INTK_PROT;
type = *p++;
little_endian = type & 1;
type &= ~1;
if(type == AUTH_MSG_ERR_REPLY){
u_int32_t code;
/* skip these fields */
p += strlen((char*)p) + 1; /* name */
p += strlen((char*)p) + 1; /* instance */
p += strlen((char*)p) + 1; /* realm */
p += 4; /* time */
p += krb_get_int(p, &code, 4, little_endian);
if(code == 0)
code = KFAILURE; /* things will go bad otherwise */
return code;
}
if(type != AUTH_MSG_KDC_REPLY)
return INTK_PROT;
p += krb_get_nir(p, aname, inst, realm);
p += krb_get_int(p, &kdc_time, 4, little_endian);
p++; /* number of tickets */
p += krb_get_int(p, &exp_date, 4, little_endian);
p++; /* master key version number */
p += krb_get_int(p, &clen, 2, little_endian);
cip->length = clen;
memcpy(cip->dat, p, clen);
p += clen;
return KSUCCESS;
}
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