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/*
* 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 $
* $FreeBSD$
*/
#if 0
#ifndef lint
static char rcsid[] =
"$FreeBSD$";
#endif /* lint */
#endif
#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);
}
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