289 lines
7.1 KiB
C
289 lines
7.1 KiB
C
/*
|
|
* Copyright (c) 1983, 1993
|
|
* The Regents of the University of California. 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.
|
|
* 4. Neither the name of the University 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 REGENTS 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 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.
|
|
*/
|
|
|
|
/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
|
|
* Dep. Matematica Universidade de Coimbra, Portugal, Europe
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* from getnetent.c 1.1 (Coimbra) 93/06/02
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
|
|
static char orig_rcsid[] = "From: Id: getnetent.c,v 8.4 1997/06/01 20:34:37 vixie Exp";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <arpa/nameser.h>
|
|
#include <errno.h>
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <nsswitch.h>
|
|
#include "netdb_private.h"
|
|
|
|
void
|
|
_setnethtent(int f, struct netent_data *ned)
|
|
{
|
|
|
|
if (ned->netf == NULL)
|
|
ned->netf = fopen(_PATH_NETWORKS, "re");
|
|
else
|
|
rewind(ned->netf);
|
|
ned->stayopen |= f;
|
|
}
|
|
|
|
void
|
|
_endnethtent(struct netent_data *ned)
|
|
{
|
|
|
|
if (ned->netf) {
|
|
fclose(ned->netf);
|
|
ned->netf = NULL;
|
|
}
|
|
ned->stayopen = 0;
|
|
}
|
|
|
|
static int
|
|
getnetent_p(struct netent *ne, struct netent_data *ned)
|
|
{
|
|
char *p, *bp, *ep;
|
|
char *cp, **q;
|
|
int len;
|
|
char line[BUFSIZ + 1];
|
|
|
|
if (ned->netf == NULL &&
|
|
(ned->netf = fopen(_PATH_NETWORKS, "re")) == NULL)
|
|
return (-1);
|
|
again:
|
|
p = fgets(line, sizeof line, ned->netf);
|
|
if (p == NULL)
|
|
return (-1);
|
|
if (*p == '#')
|
|
goto again;
|
|
cp = strpbrk(p, "#\n");
|
|
if (cp != NULL)
|
|
*cp = '\0';
|
|
bp = ned->netbuf;
|
|
ep = ned->netbuf + sizeof ned->netbuf;
|
|
ne->n_name = bp;
|
|
cp = strpbrk(p, " \t");
|
|
if (cp == NULL)
|
|
goto again;
|
|
*cp++ = '\0';
|
|
len = strlen(p) + 1;
|
|
if (ep - bp < len) {
|
|
RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
|
|
return (-1);
|
|
}
|
|
strlcpy(bp, p, ep - bp);
|
|
bp += len;
|
|
while (*cp == ' ' || *cp == '\t')
|
|
cp++;
|
|
p = strpbrk(cp, " \t");
|
|
if (p != NULL)
|
|
*p++ = '\0';
|
|
ne->n_net = inet_network(cp);
|
|
ne->n_addrtype = AF_INET;
|
|
q = ne->n_aliases = ned->net_aliases;
|
|
if (p != NULL) {
|
|
cp = p;
|
|
while (cp && *cp) {
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
continue;
|
|
}
|
|
if (q >= &ned->net_aliases[_MAXALIASES - 1])
|
|
break;
|
|
p = strpbrk(cp, " \t");
|
|
if (p != NULL)
|
|
*p++ = '\0';
|
|
len = strlen(cp) + 1;
|
|
if (ep - bp < len)
|
|
break;
|
|
strlcpy(bp, cp, ep - bp);
|
|
*q++ = bp;
|
|
bp += len;
|
|
cp = p;
|
|
}
|
|
}
|
|
*q = NULL;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
getnetent_r(struct netent *nptr, char *buffer, size_t buflen,
|
|
struct netent **result, int *h_errnop)
|
|
{
|
|
struct netent_data *ned;
|
|
struct netent ne;
|
|
res_state statp;
|
|
|
|
statp = __res_state();
|
|
if ((ned = __netent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (-1);
|
|
}
|
|
if (getnetent_p(&ne, ned) != 0)
|
|
return (-1);
|
|
if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return ((errno != 0) ? errno : -1);
|
|
}
|
|
*result = nptr;
|
|
return (0);
|
|
}
|
|
|
|
struct netent *
|
|
getnetent(void)
|
|
{
|
|
struct netdata *nd;
|
|
struct netent *rval;
|
|
int ret_h_errno;
|
|
|
|
if ((nd = __netdata_init()) == NULL)
|
|
return (NULL);
|
|
if (getnetent_r(&nd->net, nd->data, sizeof(nd->data), &rval,
|
|
&ret_h_errno) != 0)
|
|
return (NULL);
|
|
return (rval);
|
|
}
|
|
|
|
int
|
|
_ht_getnetbyname(void *rval, void *cb_data, va_list ap)
|
|
{
|
|
const char *name;
|
|
char *buffer;
|
|
size_t buflen;
|
|
int *errnop, *h_errnop;
|
|
struct netent *nptr, ne;
|
|
struct netent_data *ned;
|
|
char **cp;
|
|
res_state statp;
|
|
int error;
|
|
|
|
name = va_arg(ap, const char *);
|
|
nptr = va_arg(ap, struct netent *);
|
|
buffer = va_arg(ap, char *);
|
|
buflen = va_arg(ap, size_t);
|
|
errnop = va_arg(ap, int *);
|
|
h_errnop = va_arg(ap, int *);
|
|
|
|
statp = __res_state();
|
|
if ((ned = __netent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_UNAVAIL);
|
|
}
|
|
|
|
_setnethtent(ned->stayopen, ned);
|
|
while ((error = getnetent_p(&ne, ned)) == 0) {
|
|
if (strcasecmp(ne.n_name, name) == 0)
|
|
break;
|
|
for (cp = ne.n_aliases; *cp != 0; cp++)
|
|
if (strcasecmp(*cp, name) == 0)
|
|
goto found;
|
|
}
|
|
found:
|
|
if (!ned->stayopen)
|
|
_endnethtent(ned);
|
|
if (error != 0) {
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_NOTFOUND);
|
|
}
|
|
if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
|
|
*errnop = errno;
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_RETURN);
|
|
}
|
|
*((struct netent **)rval) = nptr;
|
|
return (NS_SUCCESS);
|
|
}
|
|
|
|
int
|
|
_ht_getnetbyaddr(void *rval, void *cb_data, va_list ap)
|
|
{
|
|
uint32_t net;
|
|
int type;
|
|
char *buffer;
|
|
size_t buflen;
|
|
int *errnop, *h_errnop;
|
|
struct netent *nptr, ne;
|
|
struct netent_data *ned;
|
|
res_state statp;
|
|
int error;
|
|
|
|
net = va_arg(ap, uint32_t);
|
|
type = va_arg(ap, int);
|
|
nptr = va_arg(ap, struct netent *);
|
|
buffer = va_arg(ap, char *);
|
|
buflen = va_arg(ap, size_t);
|
|
errnop = va_arg(ap, int *);
|
|
h_errnop = va_arg(ap, int *);
|
|
|
|
statp = __res_state();
|
|
if ((ned = __netent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_UNAVAIL);
|
|
}
|
|
|
|
_setnethtent(ned->stayopen, ned);
|
|
while ((error = getnetent_p(&ne, ned)) == 0)
|
|
if (ne.n_addrtype == type && ne.n_net == net)
|
|
break;
|
|
if (!ned->stayopen)
|
|
_endnethtent(ned);
|
|
if (error != 0) {
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_NOTFOUND);
|
|
}
|
|
if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
|
|
*errnop = errno;
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_RETURN);
|
|
}
|
|
*((struct netent **)rval) = nptr;
|
|
return (NS_SUCCESS);
|
|
}
|