mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-27 11:55:06 +00:00
150 lines
3.9 KiB
C
150 lines
3.9 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.
|
|
*/
|
|
|
|
#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();
|
|
}
|