103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
|
/*
|
|||
|
|
* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H<EFBFBD>gskolan
|
|||
|
|
* (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
|
|||
|
|
* H<EFBFBD>gskolan 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"
|
|||
|
|
|
|||
|
|
RCSID("$Id: name2name.c,v 1.15 1997/04/30 04:30:36 assar Exp $");
|
|||
|
|
|
|||
|
|
/* convert host to a more fully qualified domain name, returns 0 if
|
|||
|
|
* phost is the same as host, 1 otherwise. phost should be
|
|||
|
|
* phost_size bytes long.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
int
|
|||
|
|
krb_name_to_name(const char *host, char *phost, size_t phost_size)
|
|||
|
|
{
|
|||
|
|
struct hostent *hp;
|
|||
|
|
struct in_addr adr;
|
|||
|
|
const char *tmp;
|
|||
|
|
|
|||
|
|
adr.s_addr = inet_addr(host);
|
|||
|
|
hp = gethostbyname(host);
|
|||
|
|
if (hp == NULL && adr.s_addr != INADDR_NONE)
|
|||
|
|
hp = gethostbyaddr((char *)&adr, sizeof(adr), AF_INET);
|
|||
|
|
if (hp == NULL)
|
|||
|
|
tmp = host;
|
|||
|
|
else
|
|||
|
|
tmp = hp->h_name;
|
|||
|
|
strncpy (phost, tmp, phost_size);
|
|||
|
|
phost[phost_size - 1] = '\0';
|
|||
|
|
|
|||
|
|
if (strcmp(phost, host) == 0)
|
|||
|
|
return 0;
|
|||
|
|
else
|
|||
|
|
return 1;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* lowercase and truncate */
|
|||
|
|
|
|||
|
|
void
|
|||
|
|
k_ricercar(char *name)
|
|||
|
|
{
|
|||
|
|
char *p = name;
|
|||
|
|
while(*p && *p != '.'){
|
|||
|
|
if(isupper(*p))
|
|||
|
|
*p = tolower(*p);
|
|||
|
|
p++;
|
|||
|
|
}
|
|||
|
|
if(*p == '.')
|
|||
|
|
*p = 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* This routine takes an alias for a host name and returns the first
|
|||
|
|
* field, in lower case, of its domain name.
|
|||
|
|
*
|
|||
|
|
* Example: "fOo.BAR.com" -> "foo"
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
char *
|
|||
|
|
krb_get_phost(const char *alias)
|
|||
|
|
{
|
|||
|
|
static char phost[MaxHostNameLen+1];
|
|||
|
|
|
|||
|
|
krb_name_to_name(alias, phost, sizeof(phost));
|
|||
|
|
k_ricercar(phost);
|
|||
|
|
return phost;
|
|||
|
|
}
|