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freebsd/eBones/krb/get_phost.c
Geoff Rehmet 60643d379b Initial import of eBones.
(Including all changes for FreeBSD - importing the original eBones distribution
would be too complex at this stage, since I don't have access to Piero's 
CVS.)
(If you want to include eBones in your system, don't forget to include
MAKE_EBONES in /etc/make.conf.)
(This stuff is now also suppable from braae.ru.ac.za.)

Bones originally from MIT SIPB.
Original port to FreeBSD 1.x  by Piero Serini.
Moved to FreeBSD 2.0 by Doug Rabson and Geoff Rehmet.
Nice bug fixes from Doug Rabson.
1994-09-30 14:50:09 +00:00

54 lines
1.6 KiB
C

/*
* Copyright 1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, please see the file
* <Copyright.MIT>.
*
* from: get_phost.c,v 4.6 89/01/23 09:25:40 jtkohl Exp $
* $Id: get_phost.c,v 1.2 1994/07/19 19:25:20 g89r4222 Exp $
*/
#ifndef lint
static char rcsid[] =
"$Id: get_phost.c,v 1.2 1994/07/19 19:25:20 g89r4222 Exp $";
#endif /* lint */
#include <stdio.h>
#include <ctype.h>
#include <netdb.h>
char *index();
/*
* This routine takes an alias for a host name and returns the first
* field, lower case, of its domain name. For example, if "menel" is
* an alias for host officially named "menelaus" (in /etc/hosts), for
* the host whose official name is "MENELAUS.MIT.EDU", the name "menelaus"
* is returned.
*
* This is done for historical Athena reasons: the Kerberos name of
* rcmd servers (rlogin, rsh, rcp) is of the form "rcmd.host@realm"
* where "host"is the lowercase for of the host name ("menelaus").
* This should go away: the instance should be the domain name
* (MENELAUS.MIT.EDU). But for now we need this routine...
*
* A pointer to the name is returned, if found, otherwise a pointer
* to the original "alias" argument is returned.
*/
char * krb_get_phost(alias)
char *alias;
{
struct hostent *h;
char *phost = alias;
if ((h=gethostbyname(alias)) != (struct hostent *)NULL ) {
char *p = index( h->h_name, '.' );
if (p)
*p = NULL;
p = phost = h->h_name;
do {
if (isupper(*p)) *p=tolower(*p);
} while (*p++);
}
return(phost);
}