142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/*-
|
|
* Copyright (c) 1994, Garrett Wollman
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE 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 REGENTS 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.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)$Id: gethostbynis.c,v 1.3 1996/07/12 18:54:35 jkh Exp $";
|
|
static char rcsid[] = "$Id: gethostbynis.c,v 1.3 1996/07/12 18:54:35 jkh Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#ifdef YP
|
|
#include <rpc/rpc.h>
|
|
#include <rpcsvc/yp_prot.h>
|
|
#include <rpcsvc/ypclnt.h>
|
|
#endif
|
|
|
|
#define MAXALIASES 35
|
|
#define MAXADDRS 35
|
|
|
|
#ifdef YP
|
|
static char *host_aliases[MAXALIASES];
|
|
static char hostaddr[MAXADDRS];
|
|
static char *host_addrs[2];
|
|
#endif /* YP */
|
|
|
|
static struct hostent *
|
|
_gethostbynis(name, map, af)
|
|
const char *name;
|
|
char *map;
|
|
int af;
|
|
{
|
|
#ifdef YP
|
|
register char *cp, **q;
|
|
char *result;
|
|
int resultlen;
|
|
static struct hostent h;
|
|
static char *domain = (char *)NULL;
|
|
static char ypbuf[YPMAXRECORD];
|
|
|
|
switch(af) {
|
|
case AF_INET:
|
|
break;
|
|
default:
|
|
case AF_INET6:
|
|
errno = EAFNOSUPPORT;
|
|
return NULL;
|
|
}
|
|
|
|
if (domain == (char *)NULL)
|
|
if (yp_get_default_domain (&domain))
|
|
return ((struct hostent *)NULL);
|
|
|
|
if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
|
|
return ((struct hostent *)NULL);
|
|
|
|
/* avoid potential memory leak */
|
|
bcopy((char *)result, (char *)&ypbuf, resultlen);
|
|
free(result);
|
|
result = (char *)&ypbuf;
|
|
|
|
if ((cp = index(result, '\n')))
|
|
*cp = '\0';
|
|
|
|
cp = strpbrk(result, " \t");
|
|
*cp++ = '\0';
|
|
h.h_addr_list = host_addrs;
|
|
h.h_addr = hostaddr;
|
|
*((u_long *)h.h_addr) = inet_addr(result);
|
|
h.h_length = sizeof(u_long);
|
|
h.h_addrtype = AF_INET;
|
|
while (*cp == ' ' || *cp == '\t')
|
|
cp++;
|
|
h.h_name = cp;
|
|
q = h.h_aliases = host_aliases;
|
|
cp = strpbrk(cp, " \t");
|
|
if (cp != NULL)
|
|
*cp++ = '\0';
|
|
while (cp && *cp) {
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
continue;
|
|
}
|
|
if (q < &host_aliases[MAXALIASES - 1])
|
|
*q++ = cp;
|
|
cp = strpbrk(cp, " \t");
|
|
if (cp != NULL)
|
|
*cp++ = '\0';
|
|
}
|
|
*q = NULL;
|
|
return (&h);
|
|
#else
|
|
return (NULL);
|
|
#endif /* YP */
|
|
}
|
|
|
|
struct hostent *
|
|
_gethostbynisname(name, af)
|
|
const char *name;
|
|
int af;
|
|
{
|
|
return _gethostbynis(name, "hosts.byname", af);
|
|
}
|
|
|
|
struct hostent *
|
|
_gethostbynisaddr(addr, len, af)
|
|
const char *addr;
|
|
int len;
|
|
int af;
|
|
{
|
|
return _gethostbynis(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af);
|
|
}
|