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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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdarg.h>
#include <nsswitch.h>
#include <arpa/nameser.h> /* XXX hack for _res */
#include <resolv.h> /* XXX hack for _res */
extern int _ht_gethostbyname(void *, void *, va_list);
extern int _dns_gethostbyname(void *, void *, va_list);
extern int _nis_gethostbyname(void *, void *, va_list);
extern int _ht_gethostbyaddr(void *, void *, va_list);
extern int _dns_gethostbyaddr(void *, void *, va_list);
extern int _nis_gethostbyaddr(void *, void *, va_list);
/* Host lookup order if nsswitch.conf is broken or nonexistant */
static const ns_src default_src[] = {
{ NSSRC_FILES, NS_SUCCESS },
{ NSSRC_DNS, NS_SUCCESS },
{ 0 }
};
struct hostent *
gethostbyname(const char *name)
{
struct hostent *hp;
if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
h_errno = NETDB_INTERNAL;
return (NULL);
}
if (_res.options & RES_USE_INET6) { /* XXX */
hp = gethostbyname2(name, AF_INET6); /* XXX */
if (hp) /* XXX */
return (hp); /* XXX */
} /* XXX */
return (gethostbyname2(name, AF_INET));
}
struct hostent *
gethostbyname2(const char *name, int type)
{
struct hostent *hp = 0;
int rval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_ht_gethostbyname, NULL)
{ NSSRC_DNS, _dns_gethostbyname, NULL },
NS_NIS_CB(_nis_gethostbyname, NULL) /* force -DHESIOD */
{ 0 }
};
rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyname",
default_src, name, type);
if (rval != NS_SUCCESS)
return NULL;
else
return hp;
}
struct hostent *
gethostbyaddr(const char *addr, int len, int type)
{
struct hostent *hp = 0;
int rval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_ht_gethostbyaddr, NULL)
{ NSSRC_DNS, _dns_gethostbyaddr, NULL },
NS_NIS_CB(_nis_gethostbyaddr, NULL) /* force -DHESIOD */
{ 0 }
};
rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "gethostbyaddr",
default_src, addr, len, type);
if (rval != NS_SUCCESS)
return NULL;
else
return hp;
}
struct hostent_data;
/*
* Temporary function (not thread safe)
*/
int gethostbyaddr_r(const char *addr, int len, int type,
struct hostent *result, struct hostent_data *buffer)
{
struct hostent *hp;
int ret;
if ((hp = gethostbyaddr(addr, len, type)) == NULL) {
ret = -1;
} else {
memcpy(result, hp, sizeof(struct hostent));
ret = 0;
}
return(ret);
}
void
sethostent(stayopen)
int stayopen;
{
_sethosthtent(stayopen);
_sethostdnsent(stayopen);
}
void
endhostent()
{
_endhosthtent();
_endhostdnsent();
}
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