freebsd-dev/crypto/kerberosIV/lib/krb/create_auth_reply.c
Mark Murray 03656ac1b0 Initial import of KTH eBones. This has been cleaned up to only include
the "core" Kerberos functionality. The rest of the userland will get their
own changes later.
1997-09-04 06:04:33 +00:00

132 lines
4.3 KiB
C

/*
* 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"
RCSID("$Id: create_auth_reply.c,v 1.11 1997/04/01 08:18:20 joda Exp $");
/*
* 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(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 *p = pkt->dat;
p += krb_put_int(KRB_PROT_VERSION, p, 1);
p += krb_put_int(AUTH_MSG_KDC_REPLY, p, 1);
if(n != 0){
/* barf on old code */
krb_warning("create_auth_reply: don't give me no krb3 crap!"
" (n == %d)\n", n);
return NULL;
}
p += krb_put_nir(pname, pinst, prealm, p);
p += krb_put_int(time_ws, p, 4);
p += krb_put_int(n, p, 1);
p += krb_put_int(x_date, p, 4);
p += krb_put_int(kvno, p, 1);
p += krb_put_int(cipher->length, p, 2);
memcpy(p, cipher->dat, cipher->length);
p += cipher->length;
pkt->length = p - pkt->dat;
return pkt;
}