105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
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* Copyright (c) 1999 Thomas Nyström and Stacken Computer Club
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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. 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: krb_ip_realm.c,v 1.2.2.1 1999/12/06 23:01:12 assar Exp $");
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/*
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* Obtain a ticket for ourselves (`user.instance') in REALM and decrypt
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* it using `password' to verify the address that the KDC got our
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* request from.
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* Store in the ticket cache.
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*/
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int
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krb_add_our_ip_for_realm(const char *user, const char *instance,
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const char *realm, const char *password)
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{
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des_cblock newkey;
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des_key_schedule schedule;
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char scrapbuf[1024];
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struct in_addr myAddr;
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KTEXT_ST ticket;
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CREDENTIALS c;
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int err;
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u_int32_t addr;
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if ((err = krb_mk_req(&ticket, (char *)user, (char *)instance,
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(char *)realm, 0)) != KSUCCESS)
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return err;
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if ((err = krb_get_cred((char *)user, (char *)instance, (char *)realm,
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&c)) != KSUCCESS)
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return err;
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des_string_to_key((char *)password, &newkey);
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des_set_key(&newkey, schedule);
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err = decomp_ticket(&c.ticket_st,
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(unsigned char *)scrapbuf, /* Flags */
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scrapbuf, /* Authentication name */
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scrapbuf, /* Principal's instance */
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scrapbuf, /* Principal's authentication domain */
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/* The Address Of Me That Servers Sees */
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(u_int32_t *)&addr,
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(unsigned char *)scrapbuf, /* Session key in ticket */
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(int *)scrapbuf, /* Lifetime of ticket */
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(u_int32_t *)scrapbuf, /* Issue time and date */
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scrapbuf, /* Service name */
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scrapbuf, /* Service instance */
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&newkey, /* Secret key */
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schedule /* Precomp. key schedule */
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);
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if (err != KSUCCESS) {
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memset(newkey, 0, sizeof(newkey));
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memset(schedule, 0, sizeof(schedule));
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return err;
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}
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myAddr.s_addr = addr;
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err = tf_store_addr(realm, &myAddr);
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memset(newkey, 0, sizeof(newkey));
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memset(schedule, 0, sizeof(schedule));
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return err;
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}
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int
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krb_get_our_ip_for_realm(const char *realm, struct in_addr *ip_addr)
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{
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return tf_get_addr(realm, ip_addr);
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}
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