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/*
* This software may now be redistributed outside the US.
*
* $Source: /cvs/OpenBSD/src/kerberosIV/krb/Attic/create_auth_reply.c,v $
*
* $Locker: $
*/
/*
Copyright (C) 1989 by the Massachusetts Institute of Technology
Export of this software from the United States of America is assumed
to 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. 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.
*/
#include "krb_locl.h"
/*
* This routine is called by the Kerberos authentication server
* to create a reply to an authentication request. The routine
* takes the user's name, instance, and realm, the client's
* timestamp, the number of tickets, the user's key version
* number and the ciphertext containing the tickets themselves.
* It constructs a packet and returns a pointer to it.
*
* Notes: The packet returned by this routine is static. Thus, if you
* intend to keep the result beyond the next call to this routine, you
* must copy it elsewhere.
*
* The packet is built in the following format:
*
* variable
* type or constant data
* ---- ----------- ----
*
* unsigned char KRB_PROT_VERSION protocol version number
*
* unsigned char AUTH_MSG_KDC_REPLY protocol message type
*
* [least significant HOST_BYTE_ORDER sender's (server's) byte
* bit of above field] order
*
* string pname principal's name
*
* string pinst principal's instance
*
* string prealm principal's realm
*
* unsigned long time_ws client's timestamp
*
* unsigned char n number of tickets
*
* unsigned long x_date expiration date
*
* unsigned char kvno master key version
*
* short w_1 cipher length
*
* --- cipher->dat cipher data
*/
KTEXT
create_auth_reply(pname, pinst, prealm, time_ws, n, x_date, kvno, cipher)
char *pname; /* Principal's name */
char *pinst; /* Principal's instance */
char *prealm; /* Principal's authentication domain */
int32_t time_ws; /* Workstation time */
int n; /* Number of tickets */
u_int32_t x_date; /* Principal's expiration date */
int kvno; /* Principal's key version number */
KTEXT cipher; /* Cipher text with tickets and
* session keys */
{
static KTEXT_ST pkt_st;
KTEXT pkt = &pkt_st;
unsigned char *v = pkt->dat; /* Prot vers number */
unsigned char *t = (pkt->dat+1); /* Prot message type */
short w_l; /* Cipher length */
/* Create fixed part of packet */
*v = (unsigned char) KRB_PROT_VERSION;
*t = (unsigned char) AUTH_MSG_KDC_REPLY;
*t |= HOST_BYTE_ORDER;
if (n != 0)
*v = 3;
/* Add the basic info */
(void) strcpy((char *) (pkt->dat+2), pname);
pkt->length = 3 + strlen(pname);
(void) strcpy((char *) (pkt->dat+pkt->length),pinst);
pkt->length += 1 + strlen(pinst);
(void) strcpy((char *) (pkt->dat+pkt->length),prealm);
pkt->length += 1 + strlen(prealm);
/* Workstation timestamp */
bcopy((char *) &time_ws, (char *) (pkt->dat+pkt->length), 4);
pkt->length += 4;
*(pkt->dat+(pkt->length)++) = (unsigned char) n;
/* Expiration date */
bcopy((char *) &x_date, (char *) (pkt->dat+pkt->length),4);
pkt->length += 4;
/* Now send the ciphertext and info to help decode it */
*(pkt->dat+(pkt->length)++) = (unsigned char) kvno;
w_l = (short) cipher->length;
bcopy((char *) &w_l,(char *) (pkt->dat+pkt->length),2);
pkt->length += 2;
bcopy((char *) (cipher->dat), (char *) (pkt->dat+pkt->length),
cipher->length);
pkt->length += cipher->length;
/* And return the packet */
return pkt;
}
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