03656ac1b0
the "core" Kerberos functionality. The rest of the userland will get their own changes later.
135 lines
4.5 KiB
C
135 lines
4.5 KiB
C
/*
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* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Kungliga Tekniska
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* Högskolan and its contributors.
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*
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* 4. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb_locl.h"
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RCSID("$Id: create_ticket.c,v 1.12 1997/04/01 08:18:21 joda Exp $");
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/*
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* Create ticket takes as arguments information that should be in a
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* ticket, and the KTEXT object in which the ticket should be
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* constructed. It then constructs a ticket and returns, leaving the
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* newly created ticket in tkt.
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* The length of the ticket is a multiple of
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* eight bytes and is in tkt->length.
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*
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* If the ticket is too long, the ticket will contain nulls.
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*
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* The corresponding routine to extract information from a ticket it
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* decomp_ticket. When changes are made to this routine, the
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* corresponding changes should also be made to that file.
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*
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* The packet is built in the following format:
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*
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* variable
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* type or constant data
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* ---- ----------- ----
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*
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* tkt->length length of ticket (multiple of 8 bytes)
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*
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* tkt->dat:
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*
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* unsigned char flags namely, HOST_BYTE_ORDER
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*
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* string pname client's name
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*
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* string pinstance client's instance
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*
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* string prealm client's realm
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*
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* 4 bytes paddress client's address
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*
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* 8 bytes session session key
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*
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* 1 byte life ticket lifetime
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*
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* 4 bytes time_sec KDC timestamp
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*
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* string sname service's name
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*
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* string sinstance service's instance
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*
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* <=7 bytes null null pad to 8 byte multiple
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*
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*/
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int
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krb_create_ticket(KTEXT tkt, /* Gets filled in by the ticket */
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unsigned char flags, /* Various Kerberos flags */
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char *pname, /* Principal's name */
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char *pinstance, /* Principal's instance */
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char *prealm, /* Principal's authentication domain */
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int32_t paddress, /* Net address of requesting entity */
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void *session, /* Session key inserted in ticket */
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int16_t life, /* Lifetime of the ticket */
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int32_t time_sec, /* Issue time and date */
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char *sname, /* Service Name */
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char *sinstance, /* Instance Name */
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des_cblock *key) /* Service's secret key */
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{
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unsigned char *p = tkt->dat;
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memset(tkt, 0, sizeof(KTEXT_ST));
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p += krb_put_int(flags, p, 1);
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p += krb_put_nir(pname, pinstance, prealm, p);
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p += krb_put_address(paddress, p);
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memcpy(p, session, 8);
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p += 8;
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p += krb_put_int(life, p, 1);
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p += krb_put_int(time_sec, p, 4);
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p += krb_put_nir(sname, sinstance, NULL, p);
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/* multiple of eight bytes */
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tkt->length = (p - tkt->dat + 7) & ~7;
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/* Check length of ticket */
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if (tkt->length > (sizeof(KTEXT_ST) - 7)) {
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memset(tkt->dat, 0, tkt->length);
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tkt->length = 0;
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return KFAILURE /* XXX */;
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}
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encrypt_ktext(tkt, key, DES_ENCRYPT);
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return KSUCCESS;
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}
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