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/* $OpenBSD: verify_user.c,v 1.4 1998/05/18 00:54:03 art Exp $ */
/* $KTH: verify_user.c,v 1.11 1997/12/24 14:32:38 assar Exp $ */
/*
* 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"
/* Verify user with password. If secure, also verify against local
* service key, this can (usually) only be done by root.
*
* As a side effect, fresh tickets are obtained.
*
* srvtab is where the key is found.
*
* Returns zero if ok, a positive kerberos error or -1 for system
* errors.
*/
int
krb_verify_user_srvtab(char *name,
char *instance,
char *realm,
char *password,
int secure,
char *linstance,
char *srvtab)
{
int ret;
ret = krb_get_pw_in_tkt(name, instance, realm,
KRB_TICKET_GRANTING_TICKET,
realm,
DEFAULT_TKT_LIFE, password);
if(ret != KSUCCESS)
return ret;
if(secure){
struct hostent *hp;
int32_t addr;
KTEXT_ST ticket;
AUTH_DAT auth;
char lrealm[REALM_SZ];
char hostname[MAXHOSTNAMELEN];
char *phost;
if (gethostname(hostname, sizeof(hostname)) == -1) {
dest_tkt();
return -1;
}
hp = gethostbyname(hostname);
if(hp == NULL){
dest_tkt();
return -1;
}
memcpy(&addr, hp->h_addr, sizeof(addr));
ret = krb_get_lrealm(lrealm, 1);
if(ret != KSUCCESS){
dest_tkt();
return ret;
}
phost = krb_get_phost(hostname);
if (linstance == NULL)
linstance = "rcmd";
ret = krb_mk_req(&ticket, linstance, phost, lrealm, 33);
if(ret != KSUCCESS){
dest_tkt();
return ret;
}
ret = krb_rd_req(&ticket, linstance, phost, addr, &auth, srvtab);
if(ret != KSUCCESS){
dest_tkt();
return ret;
}
}
return 0;
}
/*
* Compat function without srvtab.
*/
int
krb_verify_user(char *name,
char *instance,
char *realm,
char *password,
int secure,
char *linstance)
{
return krb_verify_user_srvtab (name,
instance,
realm,
password,
secure,
linstance,
"");
}
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