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/* -*- mode: c; indent-tabs-mode: nil -*- */
/*
* Copyright 1993 by OpenVision Technologies, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of OpenVision not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. OpenVision makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* $Id$
*/
/* This file could be OS specific */
#include "gssapiP_generic.h"
#include "port-sockets.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <ctype.h>
#include <string.h>
char *
g_canonicalize_host(char *hostname)
{
struct hostent *hent;
char *haddr;
char *canon, *str;
if ((hent = gethostbyname(hostname)) == NULL)
return(NULL);
if (! (haddr = (char *) xmalloc(hent->h_length))) {
return(NULL);
}
memcpy(haddr, hent->h_addr_list[0], hent->h_length);
if (! (hent = gethostbyaddr(haddr, hent->h_length, hent->h_addrtype))) {
return(NULL);
}
xfree(haddr);
if ((canon = (char *) xmalloc(strlen(hent->h_name)+1)) == NULL)
return(NULL);
strcpy(canon, hent->h_name);
for (str = canon; *str; str++)
if (isupper(*str)) *str = tolower(*str);
return(canon);
}
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