mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-03 08:22:44 +00:00
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
|
|
* Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
|
|
* of Technology.
|
|
* For copying and distribution information, please see the file
|
|
* <Copyright.MIT>.
|
|
*
|
|
* from: get_krbhst.c,v 4.8 89/01/22 20:00:29 rfrench Exp $
|
|
* $Id$
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char *rcsid =
|
|
"$Id$";
|
|
#endif /* lint */
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <krb.h>
|
|
#include <strings.h>
|
|
|
|
/*
|
|
* Given a Kerberos realm, find a host on which the Kerberos authenti-
|
|
* cation server can be found.
|
|
*
|
|
* krb_get_krbhst takes a pointer to be filled in, a pointer to the name
|
|
* of the realm for which a server is desired, and an integer, n, and
|
|
* returns (in h) the nth entry from the configuration file (KRB_CONF,
|
|
* defined in "krb.h") associated with the specified realm.
|
|
*
|
|
* On end-of-file, krb_get_krbhst returns KFAILURE. If n=1 and the
|
|
* configuration file does not exist, krb_get_krbhst will return KRB_HOST
|
|
* (also defined in "krb.h"). If all goes well, the routine returnes
|
|
* KSUCCESS.
|
|
*
|
|
* The KRB_CONF file contains the name of the local realm in the first
|
|
* line (not used by this routine), followed by lines indicating realm/host
|
|
* entries. The words "admin server" following the hostname indicate that
|
|
* the host provides an administrative database server.
|
|
*
|
|
* For example:
|
|
*
|
|
* ATHENA.MIT.EDU
|
|
* ATHENA.MIT.EDU kerberos-1.mit.edu admin server
|
|
* ATHENA.MIT.EDU kerberos-2.mit.edu
|
|
* LCS.MIT.EDU kerberos.lcs.mit.edu admin server
|
|
*
|
|
* This is a temporary hack to allow us to find the nearest system running
|
|
* kerberos. In the long run, this functionality will be provided by a
|
|
* nameserver.
|
|
*/
|
|
|
|
int
|
|
krb_get_krbhst(h,r,n)
|
|
char *h;
|
|
char *r;
|
|
int n;
|
|
{
|
|
FILE *cnffile;
|
|
char tr[REALM_SZ];
|
|
char linebuf[BUFSIZ];
|
|
register int i;
|
|
|
|
if ((cnffile = fopen(KRB_CONF,"r")) == NULL) {
|
|
if (n==1) {
|
|
(void) strcpy(h,KRB_HOST);
|
|
return(KSUCCESS);
|
|
}
|
|
else
|
|
return(KFAILURE);
|
|
}
|
|
if (fscanf(cnffile,"%s",tr) == EOF)
|
|
return(KFAILURE);
|
|
/* run through the file, looking for the nth server for this realm */
|
|
for (i = 1; i <= n;) {
|
|
if (fgets(linebuf, BUFSIZ, cnffile) == NULL) {
|
|
(void) fclose(cnffile);
|
|
return(KFAILURE);
|
|
}
|
|
if (sscanf(linebuf, "%s %s", tr, h) != 2)
|
|
continue;
|
|
if (!strcmp(tr,r))
|
|
i++;
|
|
}
|
|
(void) fclose(cnffile);
|
|
return(KSUCCESS);
|
|
}
|