mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
b3608ae18f
The index() and rindex() functions were marked LEGACY in the 2001 revision of POSIX and were subsequently removed from the 2008 revision. The strchr() and strrchr() functions are part of the C standard. This makes the source code a lot more consistent, as most of these C files also call into other str*() routines. In fact, about a dozen already perform strchr() calls.
353 lines
8.1 KiB
C
353 lines
8.1 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 <arpa/nameser.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <nsswitch.h>
|
|
#include <resolv.h> /* XXX */
|
|
#ifdef YP
|
|
#include <rpc/rpc.h>
|
|
#include <rpcsvc/yp_prot.h>
|
|
#include <rpcsvc/ypclnt.h>
|
|
#endif
|
|
#include "netdb_private.h"
|
|
|
|
#ifdef YP
|
|
static int
|
|
_gethostbynis(const char *name, char *map, int af, struct hostent *he,
|
|
struct hostent_data *hed)
|
|
{
|
|
char *p, *bp, *ep;
|
|
char *cp, **q;
|
|
char *result;
|
|
int resultlen, size, addrok = 0;
|
|
char ypbuf[YPMAXRECORD + 2];
|
|
res_state statp;
|
|
|
|
statp = __res_state();
|
|
switch(af) {
|
|
case AF_INET:
|
|
size = NS_INADDRSZ;
|
|
break;
|
|
case AF_INET6:
|
|
size = NS_IN6ADDRSZ;
|
|
break;
|
|
default:
|
|
errno = EAFNOSUPPORT;
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
return (-1);
|
|
}
|
|
|
|
if (hed->yp_domain == (char *)NULL)
|
|
if (yp_get_default_domain (&hed->yp_domain)) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
return (-1);
|
|
}
|
|
|
|
if (yp_match(hed->yp_domain, map, name, strlen(name), &result,
|
|
&resultlen)) {
|
|
RES_SET_H_ERRNO(statp, HOST_NOT_FOUND);
|
|
return (-1);
|
|
}
|
|
|
|
/* avoid potential memory leak */
|
|
bcopy((char *)result, (char *)&ypbuf, resultlen);
|
|
ypbuf[resultlen] = '\0';
|
|
free(result);
|
|
result = (char *)&ypbuf;
|
|
|
|
if ((cp = strchr(result, '\n')))
|
|
*cp = '\0';
|
|
|
|
cp = strpbrk(result, " \t");
|
|
*cp++ = '\0';
|
|
he->h_addr_list = hed->h_addr_ptrs;
|
|
he->h_addr = (char *)hed->host_addr;
|
|
switch (af) {
|
|
case AF_INET:
|
|
addrok = inet_aton(result, (struct in_addr *)hed->host_addr);
|
|
if (addrok != 1)
|
|
break;
|
|
if (statp->options & RES_USE_INET6) {
|
|
_map_v4v6_address((char *)hed->host_addr,
|
|
(char *)hed->host_addr);
|
|
af = AF_INET6;
|
|
size = NS_IN6ADDRSZ;
|
|
}
|
|
break;
|
|
case AF_INET6:
|
|
addrok = inet_pton(af, result, hed->host_addr);
|
|
break;
|
|
}
|
|
if (addrok != 1) {
|
|
RES_SET_H_ERRNO(statp, HOST_NOT_FOUND);
|
|
return (-1);
|
|
}
|
|
he->h_addr_list[1] = NULL;
|
|
he->h_length = size;
|
|
he->h_addrtype = af;
|
|
while (*cp == ' ' || *cp == '\t')
|
|
cp++;
|
|
bp = hed->hostbuf;
|
|
ep = hed->hostbuf + sizeof hed->hostbuf;
|
|
he->h_name = bp;
|
|
q = he->h_aliases = hed->host_aliases;
|
|
p = strpbrk(cp, " \t");
|
|
if (p != NULL)
|
|
*p++ = '\0';
|
|
size = strlen(cp) + 1;
|
|
if (ep - bp < size) {
|
|
RES_SET_H_ERRNO(statp, NO_RECOVERY);
|
|
return (-1);
|
|
}
|
|
strlcpy(bp, cp, ep - bp);
|
|
bp += size;
|
|
cp = p;
|
|
while (cp && *cp) {
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
continue;
|
|
}
|
|
if (q >= &hed->host_aliases[_MAXALIASES - 1])
|
|
break;
|
|
p = strpbrk(cp, " \t");
|
|
if (p != NULL)
|
|
*p++ = '\0';
|
|
size = strlen(cp) + 1;
|
|
if (ep - bp < size)
|
|
break;
|
|
strlcpy(bp, cp, ep - bp);
|
|
*q++ = bp;
|
|
bp += size;
|
|
cp = p;
|
|
}
|
|
*q = NULL;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
_gethostbynisname_r(const char *name, int af, struct hostent *he,
|
|
struct hostent_data *hed)
|
|
{
|
|
char *map;
|
|
|
|
switch (af) {
|
|
case AF_INET:
|
|
map = "hosts.byname";
|
|
break;
|
|
default:
|
|
map = "ipnodes.byname";
|
|
break;
|
|
}
|
|
return (_gethostbynis(name, map, af, he, hed));
|
|
}
|
|
|
|
static int
|
|
_gethostbynisaddr_r(const void *addr, socklen_t len, int af,
|
|
struct hostent *he, struct hostent_data *hed)
|
|
{
|
|
char *map;
|
|
char numaddr[46];
|
|
|
|
switch (af) {
|
|
case AF_INET:
|
|
map = "hosts.byaddr";
|
|
break;
|
|
default:
|
|
map = "ipnodes.byaddr";
|
|
break;
|
|
}
|
|
if (inet_ntop(af, addr, numaddr, sizeof(numaddr)) == NULL)
|
|
return (-1);
|
|
return (_gethostbynis(numaddr, map, af, he, hed));
|
|
}
|
|
#endif /* YP */
|
|
|
|
/* XXX _gethostbynisname/_gethostbynisaddr only used by getipnodeby*() */
|
|
struct hostent *
|
|
_gethostbynisname(const char *name, int af)
|
|
{
|
|
#ifdef YP
|
|
struct hostent *he;
|
|
struct hostent_data *hed;
|
|
u_long oresopt;
|
|
int error;
|
|
res_state statp;
|
|
|
|
statp = __res_state();
|
|
if ((he = __hostent_init()) == NULL ||
|
|
(hed = __hostent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
return (NULL);
|
|
}
|
|
|
|
oresopt = statp->options;
|
|
statp->options &= ~RES_USE_INET6;
|
|
error = _gethostbynisname_r(name, af, he, hed);
|
|
statp->options = oresopt;
|
|
return (error == 0) ? he : NULL;
|
|
#else
|
|
return (NULL);
|
|
#endif
|
|
}
|
|
|
|
struct hostent *
|
|
_gethostbynisaddr(const void *addr, socklen_t len, int af)
|
|
{
|
|
#ifdef YP
|
|
struct hostent *he;
|
|
struct hostent_data *hed;
|
|
u_long oresopt;
|
|
int error;
|
|
res_state statp;
|
|
|
|
statp = __res_state();
|
|
if ((he = __hostent_init()) == NULL ||
|
|
(hed = __hostent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
return (NULL);
|
|
}
|
|
|
|
oresopt = statp->options;
|
|
statp->options &= ~RES_USE_INET6;
|
|
error = _gethostbynisaddr_r(addr, len, af, he, hed);
|
|
statp->options = oresopt;
|
|
return (error == 0) ? he : NULL;
|
|
#else
|
|
return (NULL);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
_nis_gethostbyname(void *rval, void *cb_data, va_list ap)
|
|
{
|
|
#ifdef YP
|
|
const char *name;
|
|
int af;
|
|
char *buffer;
|
|
size_t buflen;
|
|
int *errnop, *h_errnop;
|
|
struct hostent *hptr, he;
|
|
struct hostent_data *hed;
|
|
res_state statp;
|
|
|
|
name = va_arg(ap, const char *);
|
|
af = va_arg(ap, int);
|
|
hptr = va_arg(ap, struct hostent *);
|
|
buffer = va_arg(ap, char *);
|
|
buflen = va_arg(ap, size_t);
|
|
errnop = va_arg(ap, int *);
|
|
h_errnop = va_arg(ap, int *);
|
|
|
|
*((struct hostent **)rval) = NULL;
|
|
|
|
statp = __res_state();
|
|
if ((hed = __hostent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_NOTFOUND);
|
|
}
|
|
|
|
if (_gethostbynisname_r(name, af, &he, hed) != 0) {
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_NOTFOUND);
|
|
}
|
|
if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
|
|
*errnop = errno;
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_RETURN);
|
|
}
|
|
*((struct hostent **)rval) = hptr;
|
|
return (NS_SUCCESS);
|
|
#else
|
|
*((struct hostent **)rval) = NULL;
|
|
return (NS_UNAVAIL);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
_nis_gethostbyaddr(void *rval, void *cb_data, va_list ap)
|
|
{
|
|
#ifdef YP
|
|
const void *addr;
|
|
socklen_t len;
|
|
int af;
|
|
char *buffer;
|
|
size_t buflen;
|
|
int *errnop, *h_errnop;
|
|
struct hostent *hptr, he;
|
|
struct hostent_data *hed;
|
|
res_state statp;
|
|
|
|
addr = va_arg(ap, const void *);
|
|
len = va_arg(ap, socklen_t);
|
|
af = va_arg(ap, int);
|
|
hptr = va_arg(ap, struct hostent *);
|
|
buffer = va_arg(ap, char *);
|
|
buflen = va_arg(ap, size_t);
|
|
errnop = va_arg(ap, int *);
|
|
h_errnop = va_arg(ap, int *);
|
|
|
|
*((struct hostent **)rval) = NULL;
|
|
|
|
statp = __res_state();
|
|
if ((hed = __hostent_data_init()) == NULL) {
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_NOTFOUND);
|
|
}
|
|
|
|
if (_gethostbynisaddr_r(addr, len, af, &he, hed) != 0) {
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_NOTFOUND);
|
|
}
|
|
if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
|
|
*errnop = errno;
|
|
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
|
|
*h_errnop = statp->res_h_errno;
|
|
return (NS_RETURN);
|
|
}
|
|
*((struct hostent **)rval) = hptr;
|
|
return (NS_SUCCESS);
|
|
#else
|
|
*((struct hostent **)rval) = NULL;
|
|
return (NS_UNAVAIL);
|
|
#endif
|
|
}
|