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/*-
* 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 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";
static char rcsid[] = "$Id: gethostbynis.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 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(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 + 2];
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);
ypbuf[resultlen] = '\0';
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(const char *name, int af)
{
return _gethostbynis(name, "hosts.byname", af);
}
struct hostent *
_gethostbynisaddr(const char *addr, int len, int af)
{
return _gethostbynis(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af);
}
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