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2000-07-18  Mark Kettenis  <kettenis@gnu.org>

	Update resolver code to BIND 8.2.3-T5B.

	* resolv/Versions [GLIBC_2.2] (libc): Add __res_init and
	__res_nclose.
	[GLIBC_2.2] (libresolv): Add __dn_expand, __ns_samename,
	__res_mkquery, __res_nsend, __res_query, __res_querydomain and
	__res_search.
	* resolv/Banner: BIND-8.2.3-T5B.

	* resolv/base64.c: Update from BIND 8.2.3-T5B.
	* resolv/herror.c: Likewise.
	* resolv/inet_addr.c: Likewise.
	* resolv/inet_net_ntop.c: Likewise.
	* resolv/inet_net_pton.c: Likewise.
	* resolv/inet_neta.c: Likewise.
	* resolv/inet_ntop.c: Likewise.
	* resolv/nsap_addr.c: Likewise.
	* resolv/inet_pton.c: Likewise.  Reject a few more more invalid
	IPv6 addresses (ISC bug #520).

	* resolv/ns_name.c: Avoid emitting RCS ID in object file.
	* resolv/ns_parse.c: Likewise.
	* resolv/ns_netint.c: Likewise.
	* resolv/ns_samedomain.c: Likewise.
	* resolv/ns_ttl.c: Likewise.
	* resolv/ns_print.c: Update from BIND 8.2.3-T5B.  Avoid emitting
	RCS ID in object file.

	* resolv/res_debug.c: Update from BIND 8.2.3-T5B.
	* resolv/res_mkquery.c: Likewise.
	* resolv/res_query.c: Likewise.
	* resolv/res_init.c: Likewise.
	(res_setoptions): Mark internal.
	* resolv/res_send.c: Likewise.
	[_LIBC]: Fully reinstate the code that avoids the FD_SETSIZE limit
	by using poll instead.
	* resolv/res_comp.c: Likewise.
	[SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_2)]: Make dn_expand a
	weak alias for __dn_expand.
	* resolv/res_data.c: Likewise.
	(res_close) [_LIBC]: Don't call res_nclose if RES_INIT isn't set
	in _res.options.  Avoids a potential security risk by avoiding a
	close (0).
	[SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_2)]: Make
	res_mkquery, res_query, res_querydomain adn res_search weak
	aliases for __res_mkquery, __res_query, __res_querydomain and
	__res_search.
	* resolv/res_libc.c: (_res): Don't initialize.  Fix res_close
	instead to avoid close(0).
	(res_init): Always use the static resolver context.
	[SHLIB_COMPAT (libc, GLIBC_2.0, GLIBC_2_2)]: Make res_init a weak
	alias for __res_init.

	* resolv/resolv.h: Update from BIND 8.2.3-T5B.  Move definition of
	RES_SET_H_ERRNO and accompanying comment to...
	* include/resolv.h: ... here.

	* resolv/arpa/namser.h: Update from BIND 8.2.3-T5B.
	* resolv/arpa/nameser_compat.h: Likewise.
This commit is contained in:
Ulrich Drepper 2000-07-19 22:03:58 +00:00
parent 80ec4993cc
commit e685e07dfa
31 changed files with 1156 additions and 1016 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
ChangeLog
View File

@ -1,3 +1,65 @@
2000-07-18 Mark Kettenis <kettenis@gnu.org>
Update resolver code to BIND 8.2.3-T5B.
* resolv/Versions [GLIBC_2.2] (libc): Add __res_init and
__res_nclose.
[GLIBC_2.2] (libresolv): Add __dn_expand, __ns_samename,
__res_mkquery, __res_nsend, __res_query, __res_querydomain and
__res_search.
* resolv/Banner: BIND-8.2.3-T5B.
* resolv/base64.c: Update from BIND 8.2.3-T5B.
* resolv/herror.c: Likewise.
* resolv/inet_addr.c: Likewise.
* resolv/inet_net_ntop.c: Likewise.
* resolv/inet_net_pton.c: Likewise.
* resolv/inet_neta.c: Likewise.
* resolv/inet_ntop.c: Likewise.
* resolv/nsap_addr.c: Likewise.
* resolv/inet_pton.c: Likewise. Reject a few more more invalid
IPv6 addresses (ISC bug #520).
* resolv/ns_name.c: Avoid emitting RCS ID in object file.
* resolv/ns_parse.c: Likewise.
* resolv/ns_netint.c: Likewise.
* resolv/ns_samedomain.c: Likewise.
* resolv/ns_ttl.c: Likewise.
* resolv/ns_print.c: Update from BIND 8.2.3-T5B. Avoid emitting
RCS ID in object file.
* resolv/res_debug.c: Update from BIND 8.2.3-T5B.
* resolv/res_mkquery.c: Likewise.
* resolv/res_query.c: Likewise.
* resolv/res_init.c: Likewise.
(res_setoptions): Mark internal.
* resolv/res_send.c: Likewise.
[_LIBC]: Fully reinstate the code that avoids the FD_SETSIZE limit
by using poll instead.
* resolv/res_comp.c: Likewise.
[SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_2)]: Make dn_expand a
weak alias for __dn_expand.
* resolv/res_data.c: Likewise.
(res_close) [_LIBC]: Don't call res_nclose if RES_INIT isn't set
in _res.options. Avoids a potential security risk by avoiding a
close (0).
[SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_2)]: Make
res_mkquery, res_query, res_querydomain adn res_search weak
aliases for __res_mkquery, __res_query, __res_querydomain and
__res_search.
* resolv/res_libc.c: (_res): Don't initialize. Fix res_close
instead to avoid close(0).
(res_init): Always use the static resolver context.
[SHLIB_COMPAT (libc, GLIBC_2.0, GLIBC_2_2)]: Make res_init a weak
alias for __res_init.
* resolv/resolv.h: Update from BIND 8.2.3-T5B. Move definition of
RES_SET_H_ERRNO and accompanying comment to...
* include/resolv.h: ... here.
* resolv/arpa/namser.h: Update from BIND 8.2.3-T5B.
* resolv/arpa/nameser_compat.h: Likewise.
2000-07-18 Ulrich Drepper <drepper@redhat.com> 2000-07-18 Ulrich Drepper <drepper@redhat.com>
* nss/makedb.c (main): Compare result of load_db with * nss/makedb.c (main): Compare result of load_db with

11
include/resolv.h
View File

@ -1 +1,12 @@
#ifndef _RESOLV_H_
#define RES_SET_H_ERRNO(r,x) \
do \
{ \
(r)->res_h_errno = x; \
__set_h_errno(x); \
} \
while (0)
#include <resolv/resolv.h> #include <resolv/resolv.h>
#endif

1
linuxthreads/manager.c
View File

@ -462,7 +462,6 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr,
new_thread->p_canceltype = PTHREAD_CANCEL_DEFERRED; new_thread->p_canceltype = PTHREAD_CANCEL_DEFERRED;
new_thread->p_errnop = &new_thread->p_errno; new_thread->p_errnop = &new_thread->p_errno;
new_thread->p_h_errnop = &new_thread->p_h_errno; new_thread->p_h_errnop = &new_thread->p_h_errno;
new_thread->p_res._sock = -1;
new_thread->p_resp = &new_thread->p_res; new_thread->p_resp = &new_thread->p_res;
new_thread->p_guardaddr = guardaddr; new_thread->p_guardaddr = guardaddr;
new_thread->p_guardsize = guardsize; new_thread->p_guardsize = guardsize;

2
resolv/Banner
View File

@ -1 +1 @@
BIND-8.2.2-5 BIND-8.2.3-T5B

9
resolv/Versions
View File

@ -20,7 +20,7 @@ libc {
} }
GLIBC_2.2 { GLIBC_2.2 {
# r* # r*
__res_state; __res_ninit; __res_state; __res_init; __res_nclose; __res_ninit;
} }
} }
@ -51,8 +51,11 @@ libresolv {
__ns_name_unpack; __ns_name_ntop; __ns_name_unpack; __ns_name_ntop;
} }
GLIBC_2.2 { GLIBC_2.2 {
__res_nmkquery; __res_nquery; __res_nquerydomain; __res_nsearch; __dn_expand;
__ns_get16; __res_hostalias; __ns_get16; __ns_samename;
__res_hostalias; __res_mkquery; __res_nmkquery; __res_nquery;
__res_nquerydomain; __res_nsearch; __res_nsend; __res_query;
__res_querydomain; __res_search;
} }
libnss_dns { libnss_dns {

13
resolv/arpa/nameser.h
View File

@ -45,7 +45,7 @@
*/ */
/* /*
* $Id$ * $BINDId: nameser.h,v 8.37 2000/03/30 21:16:49 vixie Exp $
*/ */
#ifndef _ARPA_NAMESER_H_ #ifndef _ARPA_NAMESER_H_
@ -53,9 +53,13 @@
#define BIND_4_COMPAT #define BIND_4_COMPAT
#include <features.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/types.h> #if (!defined(BSD)) || (BSD < 199306)
# include <sys/bitypes.h>
#else
# include <sys/types.h>
#endif
#include <sys/cdefs.h>
/* /*
* Revision information. This is the release date in YYYYMMDD format. * Revision information. This is the release date in YYYYMMDD format.
@ -481,6 +485,7 @@ typedef enum __ns_cert_types {
#define ns_name_compress __ns_name_compress #define ns_name_compress __ns_name_compress
#define ns_name_uncompress __ns_name_uncompress #define ns_name_uncompress __ns_name_uncompress
#define ns_name_skip __ns_name_skip #define ns_name_skip __ns_name_skip
#define ns_name_rollback __ns_name_rollback
#define ns_sign __ns_sign #define ns_sign __ns_sign
#define ns_sign_tcp __ns_sign_tcp #define ns_sign_tcp __ns_sign_tcp
#define ns_sign_tcp_init __ns_sign_tcp_init #define ns_sign_tcp_init __ns_sign_tcp_init
@ -522,6 +527,8 @@ int ns_name_uncompress __P((const u_char *, const u_char *,
int ns_name_compress __P((const char *, u_char *, size_t, int ns_name_compress __P((const char *, u_char *, size_t,
const u_char **, const u_char **)); const u_char **, const u_char **));
int ns_name_skip __P((const u_char **, const u_char *)); int ns_name_skip __P((const u_char **, const u_char *));
void ns_name_rollback __P((const u_char *, const u_char **,
const u_char **));
int ns_sign __P((u_char *, int *, int, int, void *, int ns_sign __P((u_char *, int *, int, int, void *,
const u_char *, int, u_char *, int *, time_t)); const u_char *, int, u_char *, int *, time_t));
int ns_sign_tcp __P((u_char *, int *, int, int, int ns_sign_tcp __P((u_char *, int *, int, int,

3
resolv/arpa/nameser_compat.h
View File

@ -28,7 +28,7 @@
/* /*
* from nameser.h 8.1 (Berkeley) 6/2/93 * from nameser.h 8.1 (Berkeley) 6/2/93
* $Id$ * $BINDId: nameser_compat.h,v 8.11 1999/01/02 08:00:58 vixie Exp $
*/ */
#ifndef _ARPA_NAMESER_COMPAT_ #ifndef _ARPA_NAMESER_COMPAT_
@ -36,7 +36,6 @@
#define __BIND 19950621 /* (DEAD) interface version stamp. */ #define __BIND 19950621 /* (DEAD) interface version stamp. */
/* glibc always has byte order info in <endian.h> */
#include <endian.h> #include <endian.h>
/* /*

48
resolv/base64.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 1996 by Internet Software Consortium. * Copyright (c) 1996-1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -40,9 +40,14 @@
* IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/ */
#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "$BINDId: base64.c,v 8.7 1999/10/13 16:39:33 vixie Exp $";
#endif /* not lint */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <arpa/nameser.h> #include <arpa/nameser.h>
@ -50,13 +55,8 @@
#include <ctype.h> #include <ctype.h>
#include <resolv.h> #include <resolv.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h>
#if defined(BSD) && (BSD >= 199103) && defined(AF_INET6) #include <string.h>
# include <stdlib.h>
# include <string.h>
#else
# include "../conf/portability.h"
#endif
#define Assert(Cond) if (!(Cond)) abort() #define Assert(Cond) if (!(Cond)) abort()
@ -128,12 +128,7 @@ static const char Pad64 = '=';
*/ */
int int
b64_ntop(src, srclength, target, targsize) b64_ntop(u_char const *src, size_t srclength, char *target, size_t targsize) {
u_char const *src;
size_t srclength;
char *target;
size_t targsize;
{
size_t datalength = 0; size_t datalength = 0;
u_char input[3]; u_char input[3];
u_char output[4]; u_char output[4];
@ -204,8 +199,7 @@ b64_pton(src, target, targsize)
u_char *target; u_char *target;
size_t targsize; size_t targsize;
{ {
size_t tarindex; int tarindex, state, ch;
int state, ch;
char *pos; char *pos;
state = 0; state = 0;
@ -225,7 +219,7 @@ b64_pton(src, target, targsize)
switch (state) { switch (state) {
case 0: case 0:
if (target) { if (target) {
if (tarindex >= targsize) if ((size_t)tarindex >= targsize)
return (-1); return (-1);
target[tarindex] = (pos - Base64) << 2; target[tarindex] = (pos - Base64) << 2;
} }
@ -233,7 +227,7 @@ b64_pton(src, target, targsize)
break; break;
case 1: case 1:
if (target) { if (target) {
if (tarindex + 1 >= targsize) if ((size_t)tarindex + 1 >= targsize)
return (-1); return (-1);
target[tarindex] |= (pos - Base64) >> 4; target[tarindex] |= (pos - Base64) >> 4;
target[tarindex+1] = ((pos - Base64) & 0x0f) target[tarindex+1] = ((pos - Base64) & 0x0f)
@ -244,7 +238,7 @@ b64_pton(src, target, targsize)
break; break;
case 2: case 2:
if (target) { if (target) {
if (tarindex + 1 >= targsize) if ((size_t)tarindex + 1 >= targsize)
return (-1); return (-1);
target[tarindex] |= (pos - Base64) >> 2; target[tarindex] |= (pos - Base64) >> 2;
target[tarindex+1] = ((pos - Base64) & 0x03) target[tarindex+1] = ((pos - Base64) & 0x03)
@ -255,7 +249,7 @@ b64_pton(src, target, targsize)
break; break;
case 3: case 3:
if (target) { if (target) {
if (tarindex >= targsize) if ((size_t)tarindex >= targsize)
return (-1); return (-1);
target[tarindex] |= (pos - Base64); target[tarindex] |= (pos - Base64);
} }
@ -281,12 +275,7 @@ b64_pton(src, target, targsize)
case 2: /* Valid, means one byte of info */ case 2: /* Valid, means one byte of info */
/* Skip any number of spaces. */ /* Skip any number of spaces. */
#ifdef _LIBC for ((void)NULL; ch != '\0'; ch = *src++)
/* To avoid warnings. */
for ( ; ch != '\0'; ch = *src++)
#else
for (NULL; ch != '\0'; ch = *src++)
#endif
if (!isspace(ch)) if (!isspace(ch))
break; break;
/* Make sure there is another trailing = sign. */ /* Make sure there is another trailing = sign. */
@ -301,12 +290,7 @@ b64_pton(src, target, targsize)
* We know this char is an =. Is there anything but * We know this char is an =. Is there anything but
* whitespace after it? * whitespace after it?
*/ */
#ifdef _LIBC for ((void)NULL; ch != '\0'; ch = *src++)
/* To avoid warnings. */
for ( ; ch != '\0'; ch = *src++)
#else
for (NULL; ch != '\0'; ch = *src++)
#endif
if (!isspace(ch)) if (!isspace(ch))
return (-1); return (-1);

65
resolv/herror.c
View File

@ -1,6 +1,4 @@
/* /*
* ++Copyright++ 1987, 1993
* -
* Copyright (c) 1987, 1993 * Copyright (c) 1987, 1993
* The Regents of the University of California. All rights reserved. * The Regents of the University of California. All rights reserved.
* *
@ -27,44 +25,43 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * 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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* - */
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
/*
* Portions Copyright (c) 1996-1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies, and that * copyright notice and this permission notice appear in all copies.
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific, written prior permission.
* *
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE. * SOFTWARE.
* -
* --Copyright--
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93"; static const char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93";
static char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: herror.c,v 8.11 1999/10/13 16:39:39 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/uio.h> #include <sys/uio.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <netdb.h> #include <netdb.h>
#include <resolv.h>
#include <string.h>
#include <unistd.h>
#include <libintl.h> #include <libintl.h>
#if defined(BSD) && (BSD >= 199103)
# include <unistd.h>
# include <string.h>
#else
# include "../conf/portability.h"
#endif
const char *h_errlist[] = { const char *h_errlist[] = {
N_("Resolver Error 0 (no error)"), N_("Resolver Error 0 (no error)"),
@ -75,23 +72,17 @@ const char *h_errlist[] = {
}; };
int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] }; int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] };
#ifndef h_errno
extern int h_errno;
#endif
/* /*
* herror -- * herror --
* print the error indicated by the h_errno value. * print the error indicated by the h_errno value.
*/ */
void void
herror(s) herror(const char *s) {
const char *s; struct iovec iov[4], *v = iov;
{ extern int * __h_errno();
struct iovec iov[4];
register struct iovec *v = iov;
if (s && *s) { if (s != NULL && *s != '\0') {
v->iov_base = (char *)s; v->iov_base = (/*noconst*/ char *)s;
v->iov_len = strlen(s); v->iov_len = strlen(s);
v++; v++;
v->iov_base = ": "; v->iov_base = ": ";
@ -106,10 +97,12 @@ herror(s)
__writev(STDERR_FILENO, iov, (v - iov) + 1); __writev(STDERR_FILENO, iov, (v - iov) + 1);
} }
/*
* hstrerror --
* return the string associated with a given "host" errno value.
*/
const char * const char *
hstrerror(err) hstrerror(int err) {
int err;
{
if (err < 0) if (err < 0)
return _("Resolver internal error"); return _("Resolver internal error");
else if (err < h_nerr) else if (err < h_nerr)

69
resolv/inet_addr.c
View File

@ -1,6 +1,4 @@
/* /*
* ++Copyright++ 1983, 1990, 1993
* -
* Copyright (c) 1983, 1990, 1993 * Copyright (c) 1983, 1990, 1993
* The Regents of the University of California. All rights reserved. * The Regents of the University of California. All rights reserved.
* *
@ -27,7 +25,9 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * 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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* - */
/*
* Portions Copyright (c) 1993 by Digital Equipment Corporation. * Portions Copyright (c) 1993 by Digital Equipment Corporation.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
@ -45,20 +45,38 @@
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE. * SOFTWARE.
* - */
* --Copyright--
/*
* Portions Copyright (c) 1996-1999 by Internet Software Consortium.
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93"; static const char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93";
static char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: inet_addr.c,v 8.11 1999/10/13 16:39:25 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <ctype.h> #include <ctype.h>
#ifdef _LIBC #ifdef _LIBC
# include <endian.h> # include <endian.h>
# include <stdint.h> # include <stdint.h>
@ -66,18 +84,13 @@ static char rcsid[] = "$Id$";
# include <limits.h> # include <limits.h>
# include <errno.h> # include <errno.h>
#endif #endif
#include "../conf/portability.h"
/* these are compatibility routines, not needed on recent BSD releases */
/* /*
* Ascii internet address interpretation routine. * Ascii internet address interpretation routine.
* The value returned is in network order. * The value returned is in network order.
*/ */
in_addr_t in_addr_t
inet_addr(cp) inet_addr(const char *cp) {
register const char *cp;
{
struct in_addr val; struct in_addr val;
if (__inet_aton(cp, &val)) if (__inet_aton(cp, &val))
@ -93,21 +106,18 @@ inet_addr(cp)
* cannot distinguish between failure and a local broadcast address. * cannot distinguish between failure and a local broadcast address.
*/ */
in_addr_t in_addr_t
__inet_aton(cp, addr) __inet_aton(const char *cp, struct in_addr *addr) {
const char *cp;
struct in_addr *addr;
{
static const in_addr_t max[4] = { 0xffffffff, 0xffffff, 0xffff, 0xff }; static const in_addr_t max[4] = { 0xffffffff, 0xffffff, 0xffff, 0xff };
register in_addr_t val; in_addr_t val;
#ifndef _LIBC #ifndef _LIBC
register int base; int base;
#endif #endif
register char c; char c;
union iaddr { union iaddr {
uint8_t bytes[4]; uint8_t bytes[4];
uint32_t word; uint32_t word;
} res; } res;
register uint8_t *pp = res.bytes; uint8_t *pp = res.bytes;
int digit; int digit;
#ifdef _LIBC #ifdef _LIBC
@ -140,23 +150,28 @@ __inet_aton(cp, addr)
} }
c = *cp; c = *cp;
#else #else
base = 10; val = 0; base = 10; digit = 0;
if (c == '0') { if (c == '0') {
c = *++cp; c = *++cp;
if (c == 'x' || c == 'X') if (c == 'x' || c == 'X')
base = 16, c = *++cp; base = 16, c = *++cp;
else else {
base = 8; base = 8;
digit = 1 ;
}
} }
val = 0;
for (;;) { for (;;) {
if (isascii(c) && isdigit(c)) { if (isascii(c) && isdigit(c)) {
if (base == 8 && (c == '8' || c == '9'))
return (0);
val = (val * base) + (c - '0'); val = (val * base) + (c - '0');
c = *++cp; c = *++cp;
digit = 1;
} else if (base == 16 && isascii(c) && isxdigit(c)) { } else if (base == 16 && isascii(c) && isxdigit(c)) {
val = (val << 4) | val = (val << 4) |
(c + 10 - (islower(c) ? 'a' : 'A')); (c + 10 - (islower(c) ? 'a' : 'A'));
c = *++cp; c = *++cp;
digit = 1;
} else } else
break; break;
} }
@ -168,8 +183,7 @@ __inet_aton(cp, addr)
* a.b.c (with c treated as 16 bits) * a.b.c (with c treated as 16 bits)
* a.b (with b treated as 24 bits) * a.b (with b treated as 24 bits)
*/ */
if (pp > res.bytes + 3 if (pp > res.bytes + 3 || val > 0xff)
|| val > 0xff)
goto ret_0; goto ret_0;
*pp++ = val; *pp++ = val;
c = *++cp; c = *++cp;
@ -181,7 +195,6 @@ __inet_aton(cp, addr)
*/ */
if (c != '\0' && (!isascii(c) || !isspace(c))) if (c != '\0' && (!isascii(c) || !isspace(c)))
goto ret_0; goto ret_0;
/* /*
* Did we get a valid digit? * Did we get a valid digit?
*/ */
@ -193,7 +206,7 @@ __inet_aton(cp, addr)
if (val > max[pp - res.bytes]) if (val > max[pp - res.bytes])
goto ret_0; goto ret_0;
if (addr) if (addr != NULL)
addr->s_addr = res.word | htonl (val); addr->s_addr = res.word | htonl (val);
#ifdef _LIBC #ifdef _LIBC

8
resolv/inet_net_ntop.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 1996 by Internet Software Consortium. * Copyright (c) 1996,1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -16,7 +16,7 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: inet_net_ntop.c,v 1.6 1999/01/08 19:23:42 vixie Exp $";
#endif #endif
#include <sys/types.h> #include <sys/types.h>
@ -74,7 +74,7 @@ inet_net_ntop(af, src, bits, dst, size)
* pointer to dst, or NULL if an error occurred (check errno). * pointer to dst, or NULL if an error occurred (check errno).
* note: * note:
* network byte order assumed. this means 192.5.5.240/28 has * network byte order assumed. this means 192.5.5.240/28 has
* 0x11110000 in its fourth octet. * 0b11110000 in its fourth octet.
* author: * author:
* Paul Vixie (ISC), July 1996 * Paul Vixie (ISC), July 1996
*/ */
@ -98,7 +98,7 @@ inet_net_ntop_ipv4(src, bits, dst, size)
if (size < sizeof "0") if (size < sizeof "0")
goto emsgsize; goto emsgsize;
*dst++ = '0'; *dst++ = '0';
--size; size--;
*dst = '\0'; *dst = '\0';
} }

16
resolv/inet_net_pton.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 1996 by Internet Software Consortium. * Copyright (c) 1996,1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -16,7 +16,7 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: inet_net_pton.c,v 1.11 1999/01/08 19:23:44 vixie Exp $";
#endif #endif
#include <sys/types.h> #include <sys/types.h>
@ -81,7 +81,7 @@ inet_net_pton(af, src, dst, size)
* not an IPv4 network specification. * not an IPv4 network specification.
* note: * note:
* network byte order assumed. this means 192.5.5.240/28 has * network byte order assumed. this means 192.5.5.240/28 has
* 0x11110000 in its fourth octet. * 0b11110000 in its fourth octet.
* author: * author:
* Paul Vixie (ISC), June 1996 * Paul Vixie (ISC), June 1996
*/ */
@ -101,7 +101,7 @@ inet_net_pton_ipv4(src, dst, size)
/* Hexadecimal: Eat nybble string. */ /* Hexadecimal: Eat nybble string. */
if (size <= 0) if (size <= 0)
goto emsgsize; goto emsgsize;
*dst = 0, dirty = 0; dirty = 0;
tmp = 0; /* To calm down gcc. */ tmp = 0; /* To calm down gcc. */
src++; /* skip x or X. */ src++; /* skip x or X. */
while (isxdigit((ch = *src++))) { while (isxdigit((ch = *src++))) {
@ -109,9 +109,9 @@ inet_net_pton_ipv4(src, dst, size)
n = (const char *) __rawmemchr(xdigits, ch) - xdigits; n = (const char *) __rawmemchr(xdigits, ch) - xdigits;
assert(n >= 0 && n <= 15); assert(n >= 0 && n <= 15);
if (dirty == 0) if (dirty == 0)
tmp = n << 4; tmp = n;
else else
tmp |= n; tmp = (tmp << 4) | n;
if (++dirty == 2) { if (++dirty == 2) {
if (size-- <= 0) if (size-- <= 0)
goto emsgsize; goto emsgsize;
@ -119,10 +119,10 @@ inet_net_pton_ipv4(src, dst, size)
dirty = 0; dirty = 0;
} }
} }
if (dirty) { if (dirty) { /* Odd trailing nybble? */
if (size-- <= 0) if (size-- <= 0)
goto emsgsize; goto emsgsize;
*dst = (u_char) tmp; *dst++ = (u_char) (tmp << 4);
} }
} else if (isascii(ch) && isdigit(ch)) { } else if (isascii(ch) && isdigit(ch)) {
/* Decimal: eat dotted digit string. */ /* Decimal: eat dotted digit string. */

4
resolv/inet_neta.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 1996 by Internet Software Consortium. * Copyright (c) 1996,1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -16,7 +16,7 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: inet_neta.c,v 1.6 1999/01/08 19:23:45 vixie Exp $";
#endif #endif
#include <sys/types.h> #include <sys/types.h>

27
resolv/inet_ntop.c
View File

@ -1,4 +1,5 @@
/* Copyright (c) 1996 by Internet Software Consortium. /*
* Copyright (c) 1996-1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -15,19 +16,20 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: inet_ntop.c,v 1.8 1999/10/13 16:39:28 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/param.h> #include <sys/param.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <arpa/nameser.h> #include <arpa/nameser.h>
#include <string.h>
#include <errno.h> #include <errno.h>
#include <stdio.h> #include <stdio.h>
#include "../conf/portability.h" #include <string.h>
#ifdef SPRINTF_CHAR #ifdef SPRINTF_CHAR
# define SPRINTF(x) strlen(sprintf/**/x) # define SPRINTF(x) strlen(sprintf/**/x)
@ -40,9 +42,9 @@ static char rcsid[] = "$Id$";
* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
*/ */
static const char *inet_ntop4 __P((const u_char *src, char *dst, socklen_t size)) static const char *inet_ntop4 (const u_char *src, char *dst, socklen_t size)
internal_function; internal_function;
static const char *inet_ntop6 __P((const u_char *src, char *dst, socklen_t size)) static const char *inet_ntop6 (const u_char *src, char *dst, socklen_t size)
internal_function; internal_function;
/* char * /* char *
@ -74,7 +76,7 @@ inet_ntop(af, src, dst, size)
/* const char * /* const char *
* inet_ntop4(src, dst, size) * inet_ntop4(src, dst, size)
* format an IPv4 address, more or less like inet_ntoa() * format an IPv4 address
* return: * return:
* `dst' (as a const) * `dst' (as a const)
* notes: * notes:
@ -122,7 +124,7 @@ inet_ntop6(src, dst, size)
*/ */
char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp; char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp;
struct { int base, len; } best, cur; struct { int base, len; } best, cur;
u_int words[IN6ADDRSZ / INT16SZ]; u_int words[NS_IN6ADDRSZ / NS_INT16SZ];
int i; int i;
/* /*
@ -131,11 +133,11 @@ inet_ntop6(src, dst, size)
* Find the longest run of 0x00's in src[] for :: shorthanding. * Find the longest run of 0x00's in src[] for :: shorthanding.
*/ */
memset(words, '\0', sizeof words); memset(words, '\0', sizeof words);
for (i = 0; i < IN6ADDRSZ; i += 2) for (i = 0; i < NS_IN6ADDRSZ; i += 2)
words[i / 2] = (src[i] << 8) | src[i + 1]; words[i / 2] = (src[i] << 8) | src[i + 1];
best.base = -1; best.base = -1;
cur.base = -1; cur.base = -1;
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) { for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) {
if (words[i] == 0) { if (words[i] == 0) {
if (cur.base == -1) if (cur.base == -1)
cur.base = i, cur.len = 1; cur.base = i, cur.len = 1;
@ -160,7 +162,7 @@ inet_ntop6(src, dst, size)
* Format the result. * Format the result.
*/ */
tp = tmp; tp = tmp;
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) { for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) {
/* Are we inside the best run of 0x00's? */ /* Are we inside the best run of 0x00's? */
if (best.base != -1 && i >= best.base && if (best.base != -1 && i >= best.base &&
i < (best.base + best.len)) { i < (best.base + best.len)) {
@ -182,7 +184,8 @@ inet_ntop6(src, dst, size)
tp += SPRINTF((tp, "%x", words[i])); tp += SPRINTF((tp, "%x", words[i]));
} }
/* Was it a trailing run of 0x00's? */ /* Was it a trailing run of 0x00's? */
if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) if (best.base != -1 && (best.base + best.len) ==
(NS_IN6ADDRSZ / NS_INT16SZ))
*tp++ = ':'; *tp++ = ':';
*tp++ = '\0'; *tp++ = '\0';

31
resolv/inet_pton.c
View File

@ -1,4 +1,5 @@
/* Copyright (c) 1996 by Internet Software Consortium. /*
* Copyright (c) 1996,1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -15,7 +16,7 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: inet_pton.c,v 1.7 1999/10/13 16:39:28 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/param.h> #include <sys/param.h>
@ -27,7 +28,6 @@ static char rcsid[] = "$Id$";
#include <ctype.h> #include <ctype.h>
#include <string.h> #include <string.h>
#include <errno.h> #include <errno.h>
#include <conf/portability.h>
/* /*
* WARNING: Don't even consider trying to compile this on a system where * WARNING: Don't even consider trying to compile this on a system where
@ -83,7 +83,7 @@ inet_pton4(src, dst)
u_char *dst; u_char *dst;
{ {
int saw_digit, octets, ch; int saw_digit, octets, ch;
u_char tmp[INADDRSZ], *tp; u_char tmp[NS_INADDRSZ], *tp;
saw_digit = 0; saw_digit = 0;
octets = 0; octets = 0;
@ -111,8 +111,7 @@ inet_pton4(src, dst)
} }
if (octets < 4) if (octets < 4)
return (0); return (0);
memcpy(dst, tmp, NS_INADDRSZ);
memcpy(dst, tmp, INADDRSZ);
return (1); return (1);
} }
@ -136,13 +135,13 @@ inet_pton6(src, dst)
u_char *dst; u_char *dst;
{ {
static const char xdigits[] = "0123456789abcdef"; static const char xdigits[] = "0123456789abcdef";
u_char tmp[IN6ADDRSZ], *tp, *endp, *colonp; u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
const char *curtok; const char *curtok;
int ch, saw_xdigit; int ch, saw_xdigit;
u_int val; u_int val;
tp = memset(tmp, '\0', IN6ADDRSZ); tp = memset(tmp, '\0', NS_IN6ADDRSZ);
endp = tp + IN6ADDRSZ; endp = tp + NS_IN6ADDRSZ;
colonp = NULL; colonp = NULL;
/* Leading :: requires some special handling. */ /* Leading :: requires some special handling. */
if (*src == ':') if (*src == ':')
@ -170,8 +169,10 @@ inet_pton6(src, dst)
return (0); return (0);
colonp = tp; colonp = tp;
continue; continue;
} else if (*src == '\0') {
return (0);
} }
if (tp + INT16SZ > endp) if (tp + NS_INT16SZ > endp)
return (0); return (0);
*tp++ = (u_char) (val >> 8) & 0xff; *tp++ = (u_char) (val >> 8) & 0xff;
*tp++ = (u_char) val & 0xff; *tp++ = (u_char) val & 0xff;
@ -179,16 +180,16 @@ inet_pton6(src, dst)
val = 0; val = 0;
continue; continue;
} }
if (ch == '.' && ((tp + INADDRSZ) <= endp) && if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
inet_pton4(curtok, tp) > 0) { inet_pton4(curtok, tp) > 0) {
tp += INADDRSZ; tp += NS_INADDRSZ;
saw_xdigit = 0; saw_xdigit = 0;
break; /* '\0' was seen by inet_pton4(). */ break; /* '\0' was seen by inet_pton4(). */
} }
return (0); return (0);
} }
if (saw_xdigit) { if (saw_xdigit) {
if (tp + INT16SZ > endp) if (tp + NS_INT16SZ > endp)
return (0); return (0);
*tp++ = (u_char) (val >> 8) & 0xff; *tp++ = (u_char) (val >> 8) & 0xff;
*tp++ = (u_char) val & 0xff; *tp++ = (u_char) val & 0xff;
@ -201,6 +202,8 @@ inet_pton6(src, dst)
const int n = tp - colonp; const int n = tp - colonp;
int i; int i;
if (tp == endp)
return (0);
for (i = 1; i <= n; i++) { for (i = 1; i <= n; i++) {
endp[- i] = colonp[n - i]; endp[- i] = colonp[n - i];
colonp[n - i] = 0; colonp[n - i] = 0;
@ -209,6 +212,6 @@ inet_pton6(src, dst)
} }
if (tp != endp) if (tp != endp)
return (0); return (0);
memcpy(dst, tmp, IN6ADDRSZ); memcpy(dst, tmp, NS_IN6ADDRSZ);
return (1); return (1);
} }

88
resolv/ns_name.c
View File

@ -15,8 +15,8 @@
* SOFTWARE. * SOFTWARE.
*/ */
#ifndef lint #if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: ns_name.c,v 8.15 2000/03/30 22:53:46 vixie Exp $";
#endif #endif
#include <sys/types.h> #include <sys/types.h>
@ -375,7 +375,7 @@ ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
u_char *dstp; u_char *dstp;
const u_char **cpp, **lpp, *eob, *msg; const u_char **cpp, **lpp, *eob, *msg;
const u_char *srcp; const u_char *srcp;
int n, l; int n, l, first = 1;
srcp = src; srcp = src;
dstp = dst; dstp = dst;
@ -424,9 +424,10 @@ ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
} }
/* Not found, save it. */ /* Not found, save it. */
if (lastdnptr != NULL && cpp < lastdnptr - 1 && if (lastdnptr != NULL && cpp < lastdnptr - 1 &&
(dstp - msg) < 0x4000) { (dstp - msg) < 0x4000 && first) {
*cpp++ = dstp; *cpp++ = dstp;
*cpp = NULL; *cpp = NULL;
first = 0;
} }
} }
/* copy label to buffer */ /* copy label to buffer */
@ -498,6 +499,23 @@ ns_name_compress(const char *src, u_char *dst, size_t dstsiz,
return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr)); return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr));
} }
/*
* Reset dnptrs so that there are no active references to pointers at or
* after src.
*/
void
ns_name_rollback(const u_char *src, const u_char **dnptrs,
const u_char **lastdnptr)
{
while (dnptrs < lastdnptr && *dnptrs != NULL) {
if (*dnptrs >= src) {
*dnptrs = NULL;
break;
}
dnptrs++;
}
}
/* /*
* ns_name_skip(ptrptr, eom) * ns_name_skip(ptrptr, eom)
* Advance *ptrptr to skip over the compressed name it points at. * Advance *ptrptr to skip over the compressed name it points at.
@ -600,36 +618,48 @@ dn_find(const u_char *domain, const u_char *msg,
u_int n; u_int n;
for (cpp = dnptrs; cpp < lastdnptr; cpp++) { for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
dn = domain; sp = *cpp;
sp = cp = *cpp; /*
while ((n = *cp++) != 0) { * terminate search on:
/* * root label
* check for indirection * compression pointer
*/ * unusable offset
switch (n & NS_CMPRSFLGS) { */
case 0: /* normal case, n == len */ while (*sp != 0 && (*sp & NS_CMPRSFLGS) == 0 &&
if (n != *dn++) (sp - msg) < 0x4000) {
goto next; dn = domain;
for ((void)NULL; n > 0; n--) cp = sp;
if (mklower(*dn++) != mklower(*cp++)) while ((n = *cp++) != 0) {
/*
* check for indirection
*/
switch (n & NS_CMPRSFLGS) {
case 0: /* normal case, n == len */
if (n != *dn++)
goto next; goto next;
/* Is next root for both ? */ for ((void)NULL; n > 0; n--)
if (*dn == '\0' && *cp == '\0') if (mklower(*dn++) !=
return (sp - msg); mklower(*cp++))
if (*dn) goto next;
continue; /* Is next root for both ? */
goto next; if (*dn == '\0' && *cp == '\0')
return (sp - msg);
if (*dn)
continue;
goto next;
case NS_CMPRSFLGS: /* indirection */ case NS_CMPRSFLGS: /* indirection */
cp = msg + (((n & 0x3f) << 8) | *cp); cp = msg + (((n & 0x3f) << 8) | *cp);
break; break;
default: /* illegal type */ default: /* illegal type */
__set_errno (EMSGSIZE); __set_errno (EMSGSIZE);
return (-1); return (-1);
}
} }
next:
sp += *sp + 1;
} }
next: ;
} }
__set_errno (ENOENT); __set_errno (ENOENT);
return (-1); return (-1);

4
resolv/ns_netint.c
View File

@ -15,8 +15,8 @@
* SOFTWARE. * SOFTWARE.
*/ */
#ifndef lint #if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: ns_netint.c,v 8.4 1999/10/13 16:39:35 vixie Exp $";
#endif #endif
/* Import. */ /* Import. */

4
resolv/ns_parse.c
View File

@ -15,8 +15,8 @@
* SOFTWARE. * SOFTWARE.
*/ */
#ifndef lint #if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: ns_parse.c,v 8.13 1999/10/13 16:39:35 vixie Exp $";
#endif #endif
/* Import. */ /* Import. */

37
resolv/ns_print.c
View File

@ -15,11 +15,12 @@
* SOFTWARE. * SOFTWARE.
*/ */
#ifndef lint #if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: ns_print.c,v 8.18 2000/02/29 05:48:12 vixie Exp $";
#endif #endif
/* Import. */ /* Import. */
#include <sys/types.h> #include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>
@ -27,6 +28,7 @@ static const char rcsid[] = "$Id$";
#include <arpa/nameser.h> #include <arpa/nameser.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <assert.h>
#include <errno.h> #include <errno.h>
#include <resolv.h> #include <resolv.h>
#include <string.h> #include <string.h>
@ -53,6 +55,7 @@ static int addtab(size_t len, size_t target, int spaced,
char **buf, size_t *buflen); char **buf, size_t *buflen);
/* Proto. */ /* Proto. */
#ifndef _LIBC #ifndef _LIBC
u_int16_t dst_s_dns_key_id(const u_char *, const int); u_int16_t dst_s_dns_key_id(const u_char *, const int);
#endif #endif
@ -122,9 +125,10 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
T(addstr("@\t\t\t", 4, &buf, &buflen)); T(addstr("@\t\t\t", 4, &buf, &buflen));
} else { } else {
T(addstr(name, len, &buf, &buflen)); T(addstr(name, len, &buf, &buflen));
/* Origin not used and no trailing dot? */ /* Origin not used or not root, and no trailing dot? */
if ((!origin || !origin[0] || name[len] == '\0') && if (((origin == NULL || origin[0] == '\0') ||
name[len - 1] != '.') { (origin[0] != '.' && origin[1] != '\0' &&
name[len] == '\0')) && name[len - 1] != '.') {
T(addstr(".", 1, &buf, &buflen)); T(addstr(".", 1, &buf, &buflen));
len++; len++;
} }
@ -480,6 +484,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
n = SPRINTF((tmp, " ; key_tag= %u", key_id)); n = SPRINTF((tmp, " ; key_tag= %u", key_id));
T(addstr(tmp, n, &buf, &buflen)); T(addstr(tmp, n, &buf, &buflen));
#endif /* !_LIBC */ #endif /* !_LIBC */
break; break;
} }
@ -749,20 +754,22 @@ addname(const u_char *msg, size_t msglen,
if (n < 0) if (n < 0)
goto enospc; /* Guess. */ goto enospc; /* Guess. */
newlen = prune_origin(*buf, origin); newlen = prune_origin(*buf, origin);
if ((origin == NULL || origin[0] == '\0' || (*buf)[newlen] == '\0') &&
(newlen == 0 || (*buf)[newlen - 1] != '.')) {
/* No trailing dot. */
if (newlen + 2 > *buflen)
goto enospc; /* No room for ".\0". */
(*buf)[newlen++] = '.';
(*buf)[newlen] = '\0';
}
if (newlen == 0) { if (newlen == 0) {
/* Use "@" instead of name. */ /* Use "@" instead of name. */
if (newlen + 2 > *buflen) if (newlen + 2 > *buflen)
goto enospc; /* No room for "@\0". */ goto enospc; /* No room for "@\0". */
(*buf)[newlen++] = '@'; (*buf)[newlen++] = '@';
(*buf)[newlen] = '\0'; (*buf)[newlen] = '\0';
} else {
if (((origin == NULL || origin[0] == '\0') ||
(origin[0] != '.' && origin[1] != '\0' &&
(*buf)[newlen] == '\0')) && (*buf)[newlen - 1] != '.') {
/* No trailing dot. */
if (newlen + 2 > *buflen)
goto enospc; /* No room for ".\0". */
(*buf)[newlen++] = '.';
(*buf)[newlen] = '\0';
}
} }
*pp += n; *pp += n;
addlen(newlen, buf, buflen); addlen(newlen, buf, buflen);
@ -777,9 +784,7 @@ addname(const u_char *msg, size_t msglen,
static void static void
addlen(size_t len, char **buf, size_t *buflen) { addlen(size_t len, char **buf, size_t *buflen) {
#if 0 assert(len <= *buflen);
INSIST(len <= *buflen);
#endif
*buf += len; *buf += len;
*buflen -= len; *buflen -= len;
} }

4
resolv/ns_samedomain.c
View File

@ -15,8 +15,8 @@
* SOFTWARE. * SOFTWARE.
*/ */
#ifndef lint #if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: ns_samedomain.c,v 8.9 1999/10/15 21:06:51 vixie Exp $";
#endif #endif
#include <sys/types.h> #include <sys/types.h>

5
resolv/ns_ttl.c
View File

@ -15,11 +15,12 @@
* SOFTWARE. * SOFTWARE.
*/ */
#ifndef lint #if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: ns_ttl.c,v 8.8 1999/10/13 16:39:36 vixie Exp $";
#endif #endif
/* Import. */ /* Import. */
#include <arpa/nameser.h> #include <arpa/nameser.h>
#include <ctype.h> #include <ctype.h>

8
resolv/nsap_addr.c
View File

@ -1,5 +1,5 @@
/* /*
* Copyright (c) 1996 by Internet Software Consortium. * Copyright (c) 1996-1999 by Internet Software Consortium.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above * purpose with or without fee is hereby granted, provided that the above
@ -16,15 +16,17 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: nsap_addr.c,v 8.10 1999/10/13 16:39:28 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <arpa/nameser.h> #include <arpa/nameser.h>
#include <ctype.h> #include <ctype.h>
#include <resolv.h> #include <resolv.h>
@ -38,7 +40,7 @@ inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) {
u_char c, nib; u_char c, nib;
u_int len = 0; u_int len = 0;
while ((c = *ascii++) != '\0' && (int) len < maxlen) { while ((c = *ascii++) != '\0' && len < (u_int)maxlen) {
if (c == '.' || c == '+' || c == '/') if (c == '.' || c == '+' || c == '/')
continue; continue;
if (!isascii(c)) if (!isascii(c))

22
resolv/res_comp.c
View File

@ -25,7 +25,9 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * 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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* - */
/*
* Portions Copyright (c) 1993 by Digital Equipment Corporation. * Portions Copyright (c) 1993 by Digital Equipment Corporation.
* *
* Permission to use, copy, modify, and distribute this software for any * Permission to use, copy, modify, and distribute this software for any
@ -64,23 +66,19 @@
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93"; static const char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: res_comp.c,v 8.15 1999/10/13 16:39:39 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/nameser.h> #include <arpa/nameser.h>
#include <ctype.h> #include <ctype.h>
#include <errno.h>
#include <resolv.h> #include <resolv.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
/* /*
* Expand compressed domain name 'comp_dn' to full domain name. * Expand compressed domain name 'comp_dn' to full domain name.
* 'msg' is a pointer to the begining of the message, * 'msg' is a pointer to the begining of the message,
@ -157,7 +155,7 @@ res_hnok(const char *dn) {
int nch = *dn++; int nch = *dn++;
if (periodchar(ch)) { if (periodchar(ch)) {
/* NULL */; (void)NULL;
} else if (periodchar(pch)) { } else if (periodchar(pch)) {
if (!borderchar(ch)) if (!borderchar(ch))
return (0); return (0);
@ -198,7 +196,7 @@ res_mailok(const char *dn) {
/* "." is a valid missing representation */ /* "." is a valid missing representation */
if (*dn == '\0') if (*dn == '\0')
return(1); return (1);
/* otherwise <label>.<hostname> */ /* otherwise <label>.<hostname> */
while ((ch = *dn++) != '\0') { while ((ch = *dn++) != '\0') {
@ -246,3 +244,11 @@ u_int32_t _getlong(const u_char *src) { return (ns_get32(src)); }
u_int16_t _getshort(const u_char *src) { return (ns_get16(src)); } u_int16_t _getshort(const u_char *src) { return (ns_get16(src)); }
#endif /*__ultrix__*/ #endif /*__ultrix__*/
#endif /*BIND_4_COMPAT*/ #endif /*BIND_4_COMPAT*/
#include <shlib-compat.h>
#if SHLIB_COMPAT(libresolv, GLIBC_2_0, GLIBC_2_2)
# undef dn_expand
weak_alias (__dn_expand, dn_expand);
#endif

35
resolv/res_data.c
View File

@ -16,7 +16,7 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: res_data.c,v 8.17 1999/10/13 17:11:31 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
@ -31,6 +31,9 @@ static const char rcsid[] = "$Id$";
#include <ctype.h> #include <ctype.h>
#include <netdb.h> #include <netdb.h>
#include <resolv.h> #include <resolv.h>
#ifdef BIND_UPDATE
#include <res_update.h>
#endif
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -67,11 +70,10 @@ const char *_res_sectioncodes[] = {
#endif #endif
#ifndef __BIND_NOSTATIC #ifndef __BIND_NOSTATIC
#ifdef _LIBC #ifdef _LIBC
extern struct __res_state _res; extern struct __res_state _res;
#else #else
/* The declaration has been moved to res_libc.c. */ /* The definition has been moved to res_libc.c. */
struct __res_state _res struct __res_state _res
# if defined(__BIND_RES_TEXT) # if defined(__BIND_RES_TEXT)
= { RES_TIMEOUT, } /* Motorola, et al. */ = { RES_TIMEOUT, } /* Motorola, et al. */
@ -85,7 +87,7 @@ int res_ourserver_p(const res_state, const struct sockaddr_in *);
void res_pquery(const res_state, const u_char *, int, FILE *); void res_pquery(const res_state, const u_char *, int, FILE *);
#ifndef _LIBC #ifndef _LIBC
/* Moved to res_libc.c since res_init should go into libc.so but the /* Moved to res_libc.c since res_init() should go into libc.so but the
rest of this file not. */ rest of this file not. */
int int
res_init(void) { res_init(void) {
@ -231,6 +233,17 @@ res_sendsigned(const u_char *buf, int buflen, ns_tsig_key *key,
void void
res_close(void) { res_close(void) {
#ifdef _LIBC
/*
* Some stupid programs out there call res_close() before res_init().
* Since _res._vcsock isn't explicitly initialized, these means that
* we could do a close(0), which might lead to some security problems.
* Therefore we check if res_init() was called before by looking at
* the RES_INIT bit in _res.options. If it hasn't been set we bail out
* early. */
if ((_res.options & RES_INIT) == 0)
return;
#endif
res_nclose(&_res); res_nclose(&_res);
} }
@ -302,3 +315,17 @@ local_hostname_length(const char *hostname) {
#endif /*ultrix*/ #endif /*ultrix*/
#endif #endif
#include <shlib-compat.h>
#if SHLIB_COMPAT(libresolv, GLIBC_2_0, GLIBC_2_2)
# undef res_mkquery
# undef res_query
# undef res_querydomain
# undef res_search
weak_alias (__res_mkquery, res_mkquery);
weak_alias (__res_query, res_query);
weak_alias (__res_querydomain, res_querydomain);
weak_alias (__res_search, res_search);
#endif

46
resolv/res_debug.c
View File

@ -91,7 +91,7 @@
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: res_debug.c,v 8.34 2000/02/29 05:30:55 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
@ -141,7 +141,8 @@ do_section(const res_state statp,
int pflag, FILE *file) int pflag, FILE *file)
{ {
int n, sflag, rrnum; int n, sflag, rrnum;
char buf[2048]; /* XXX need to malloc */ static int buflen = 2048;
char *buf;
ns_opcode opcode; ns_opcode opcode;
ns_rr rr; ns_rr rr;
@ -152,6 +153,12 @@ do_section(const res_state statp,
if (statp->pfcode && !sflag) if (statp->pfcode && !sflag)
return; return;
buf = malloc(buflen);
if (buf == NULL) {
fprintf(file, ";; memory allocation failure\n");
return;
}
opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode); opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
rrnum = 0; rrnum = 0;
for (;;) { for (;;) {
@ -162,7 +169,7 @@ do_section(const res_state statp,
else if (rrnum > 0 && sflag != 0 && else if (rrnum > 0 && sflag != 0 &&
(statp->pfcode & RES_PRF_HEAD1)) (statp->pfcode & RES_PRF_HEAD1))
putc('\n', file); putc('\n', file);
return; goto cleanup;
} }
if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1)) if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
fprintf(file, ";; %s SECTION:\n", fprintf(file, ";; %s SECTION:\n",
@ -174,17 +181,32 @@ do_section(const res_state statp,
p_class(ns_rr_class(rr))); p_class(ns_rr_class(rr)));
else { else {
n = ns_sprintrr(handle, &rr, NULL, NULL, n = ns_sprintrr(handle, &rr, NULL, NULL,
buf, sizeof buf); buf, buflen);
if (n < 0) { if (n < 0) {
if (errno == ENOSPC) {
free(buf);
buf = NULL;
if (buflen < 131072)
buf = malloc(buflen += 1024);
if (buf == NULL) {
fprintf(file,
";; memory allocation failure\n");
return;
}
continue;
}
fprintf(file, ";; ns_sprintrr: %s\n", fprintf(file, ";; ns_sprintrr: %s\n",
strerror(errno)); strerror(errno));
return; goto cleanup;
} }
fputs(buf, file); fputs(buf, file);
fputc('\n', file); fputc('\n', file);
} }
rrnum++; rrnum++;
} }
cleanup:
if (buf != NULL)
free(buf);
} }
/* /*
@ -465,13 +487,8 @@ const char *
sym_ntos(const struct res_sym *syms, int number, int *success) { sym_ntos(const struct res_sym *syms, int number, int *success) {
static char unname[20]; static char unname[20];
#ifdef _LIBC
/* Changed to prevent warning. --drepper@gnu */
for (; syms->name != 0; syms++) {
#else
for ((void)NULL; syms->name != 0; syms++) { for ((void)NULL; syms->name != 0; syms++) {
#endif if (number == syms->number) {
if (number == syms->number) {
if (success) if (success)
*success = 1; *success = 1;
return (syms->name); return (syms->name);
@ -488,12 +505,7 @@ const char *
sym_ntop(const struct res_sym *syms, int number, int *success) { sym_ntop(const struct res_sym *syms, int number, int *success) {
static char unname[20]; static char unname[20];
#ifdef _LIBC
/* Changed to prevent warning. --drepper@gnu */
for (; syms->name != 0; syms++) {
#else
for ((void)NULL; syms->name != 0; syms++) { for ((void)NULL; syms->name != 0; syms++) {
#endif
if (number == syms->number) { if (number == syms->number) {
if (success) if (success)
*success = 1; *success = 1;
@ -1012,7 +1024,7 @@ p_secstodate (u_long secs) {
struct tm *time; struct tm *time;
#ifdef HAVE_TIME_R #ifdef HAVE_TIME_R
struct time timebuf; struct tm timebuf;
time = gmtime_r(&clock, &timebuf); time = gmtime_r(&clock, &timebuf);
#else #else

39
resolv/res_init.c
View File

@ -66,7 +66,7 @@
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93"; static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: res_init.c,v 8.16 2000/05/09 07:10:12 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
@ -88,13 +88,11 @@ static const char rcsid[] = "$Id$";
/* Options. Should all be left alone. */ /* Options. Should all be left alone. */
#define RESOLVSORT #define RESOLVSORT
#define RFC1535 #define RFC1535
#undef DEBUG /* #undef DEBUG */
static void static void res_setoptions (res_state, const char *, const char *)
res_setoptions (res_state statp, const char *options, const char *source)
internal_function; internal_function;
#ifdef RESOLVSORT #ifdef RESOLVSORT
static const char sort_mask[] = "/&"; static const char sort_mask[] = "/&";
#define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL) #define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL)
@ -172,10 +170,11 @@ __res_vinit(res_state statp, int preinit) {
statp->nscount = 1; statp->nscount = 1;
statp->ndots = 1; statp->ndots = 1;
statp->pfcode = 0; statp->pfcode = 0;
statp->_sock = -1; statp->_vcsock = -1;
statp->_flags = 0; statp->_flags = 0;
statp->qhook = NULL; statp->qhook = NULL;
statp->rhook = NULL; statp->rhook = NULL;
statp->_u._ext.nscount = 0;
/* Allow user to override the local domain definition */ /* Allow user to override the local domain definition */
if ((cp = __secure_getenv("LOCALDOMAIN")) != NULL) { if ((cp = __secure_getenv("LOCALDOMAIN")) != NULL) {
@ -391,8 +390,7 @@ __res_vinit(res_state statp, int preinit) {
static void static void
internal_function internal_function
res_setoptions(res_state statp, const char *options, const char *source) res_setoptions(res_state statp, const char *options, const char *source) {
{
const char *cp = options; const char *cp = options;
int i; int i;
@ -476,3 +474,28 @@ res_randomid(void) {
__gettimeofday(&now, NULL); __gettimeofday(&now, NULL);
return (0xffff & (now.tv_sec ^ now.tv_usec ^ __getpid())); return (0xffff & (now.tv_sec ^ now.tv_usec ^ __getpid()));
} }
/*
* This routine is for closing the socket if a virtual circuit is used and
* the program wants to close it. This provides support for endhostent()
* which expects to close the socket.
*
* This routine is not expected to be user visible.
*/
void
res_nclose(res_state statp) {
int ns;
if (statp->_vcsock >= 0) {
(void) close(statp->_vcsock);
statp->_vcsock = -1;
statp->_flags &= ~(RES_F_VC | RES_F_CONN);
}
for (ns = 0; ns < statp->_u._ext.nscount; ns++) {
if (statp->_u._ext.nssocks[ns] != -1) {
(void) close(statp->_u._ext.nssocks[ns]);
statp->_u._ext.nssocks[ns] = -1;
}
}
statp->_u._ext.nscount = 0;
}

56
resolv/res_libc.c
View File

@ -15,34 +15,29 @@
* SOFTWARE. * SOFTWARE.
*/ */
/* Define some functions that go int libc.so. */
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id$";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h> #include <arpa/nameser.h>
#include <ctype.h>
#include <netdb.h>
#include <resolv.h> #include <resolv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#undef _res
/* This is the old res_init function. It has been moved from /* The resolver state for use by single-threaded programs. */
res_data.c to this file since res_init should go into libc.so but struct __res_state _res;
the rest of res_data not. */
/* This function is used to access the resolver state in
single-threaded programs. */
struct __res_state *
weak_const_function
__res_state (void)
{
return &_res;
}
/* The following bit is copied from res_data.c (where it is #ifdef'ed
out) since res_init() should go into libc.so but the rest of that
file should not. */
int int
res_init(void) { res_init(void) {
@ -83,18 +78,11 @@ res_init(void) {
return (__res_vinit(&_res, 1)); return (__res_vinit(&_res, 1));
} }
/* We need a resolver context - in unthreaded apps, this weak function #include <shlib-compat.h>
provides it. */
#undef _res #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2)
# undef res_init
struct __res_state _res = { _sock : -1 }; weak_alias (__res_init, res_init);
#endif
struct __res_state *
weak_const_function
__res_state(void)
{
return &_res;
}

2
resolv/res_mkquery.c
View File

@ -66,7 +66,7 @@
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93"; static const char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: res_mkquery.c,v 8.12 1999/10/13 16:39:40 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>

33
resolv/res_query.c
View File

@ -66,7 +66,7 @@
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_query.c 8.1 (Berkeley) 6/4/93"; static const char sccsid[] = "@(#)res_query.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$Id$"; static const char rcsid[] = "$BINDId: res_query.c,v 8.20 2000/02/29 05:39:12 vixie Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
@ -184,8 +184,9 @@ res_nsearch(res_state statp,
HEADER *hp = (HEADER *) answer; HEADER *hp = (HEADER *) answer;
char tmp[NS_MAXDNAME]; char tmp[NS_MAXDNAME];
u_int dots; u_int dots;
int trailing_dot, ret; int trailing_dot, ret, saved_herrno;
int got_nodata = 0, got_servfail = 0, root_on_list = 0; int got_nodata = 0, got_servfail = 0, root_on_list = 0;
int tried_as_is = 0;
__set_errno (0); __set_errno (0);
RES_SET_H_ERRNO(statp, HOST_NOT_FOUND); /* True if we never query. */ RES_SET_H_ERRNO(statp, HOST_NOT_FOUND); /* True if we never query. */
@ -202,12 +203,19 @@ res_nsearch(res_state statp,
return (res_nquery(statp, cp, class, type, answer, anslen)); return (res_nquery(statp, cp, class, type, answer, anslen));
/* /*
* If there are enough dots in the name, do no searching. * If there are enough dots in the name, let's just give it a
* (The threshold can be set with the "ndots" option.) * try 'as is'. The threshold can be set with the "ndots" option.
* Also, query 'as is', if there is a trailing dot in the name.
*/ */
if (dots >= statp->ndots || trailing_dot) saved_herrno = -1;
return (res_nquerydomain(statp, name, NULL, class, type, if (dots >= statp->ndots || trailing_dot) {
answer, anslen)); ret = res_nquerydomain(statp, name, NULL, class, type,
answer, anslen);
if (ret > 0 || trailing_dot)
return (ret);
saved_herrno = h_errno;
tried_as_is++;
}
/* /*
* We do at least one level of search if * We do at least one level of search if
@ -279,10 +287,11 @@ res_nsearch(res_state statp,
} }
/* /*
* If the name has any dots at all, and "." is not on the search * If the name has any dots at all, and no earlier 'as-is' query
* list, then try an as-is query now. * for the name, and "." is not on the search list, then try an as-is
* query now.
*/ */
if (statp->ndots) { if (statp->ndots && !(tried_as_is || root_on_list)) {
ret = res_nquerydomain(statp, name, NULL, class, type, ret = res_nquerydomain(statp, name, NULL, class, type,
answer, anslen); answer, anslen);
if (ret > 0) if (ret > 0)
@ -296,7 +305,9 @@ res_nsearch(res_state statp,
* else send back meaningless H_ERRNO, that being the one from * else send back meaningless H_ERRNO, that being the one from
* the last DNSRCH we did. * the last DNSRCH we did.
*/ */
if (got_nodata) if (saved_herrno != -1)
RES_SET_H_ERRNO(statp, saved_herrno);
else if (got_nodata)
RES_SET_H_ERRNO(statp, NO_DATA); RES_SET_H_ERRNO(statp, NO_DATA);
else if (got_servfail) else if (got_servfail)
RES_SET_H_ERRNO(statp, TRY_AGAIN); RES_SET_H_ERRNO(statp, TRY_AGAIN);

1075
resolv/res_send.c
View File

File diff suppressed because it is too large Load Diff

267
resolv/resolv.h
View File

@ -1,7 +1,5 @@
/* /*
* ++Copyright++ 1983, 1987, 1989, 1993 * Copyright (c) 1983, 1987, 1989
* -
* Copyright (c) 1983, 1987, 1989, 1993
* The Regents of the University of California. All rights reserved. * The Regents of the University of California. All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -27,26 +25,6 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * 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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* -
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
*
* 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, and that
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific, written prior permission.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
* -
* --Copyright--
*/ */
/* /*
@ -68,13 +46,11 @@
/* /*
* @(#)resolv.h 8.1 (Berkeley) 6/2/93 * @(#)resolv.h 8.1 (Berkeley) 6/2/93
* $Id$ * $BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
*/ */
#ifndef _RESOLV_H #ifndef _RESOLV_H_
#define _RESOLV_H 1 #define _RESOLV_H_
#include <features.h>
#include <sys/param.h> #include <sys/param.h>
#if (!defined(BSD)) || (BSD < 199306) #if (!defined(BSD)) || (BSD < 199306)
@ -82,8 +58,11 @@
#else #else
# include <sys/types.h> # include <sys/types.h>
#endif #endif
#include <sys/cdefs.h>
#include <stdio.h> #include <stdio.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/nameser.h>
/* /*
* Revision information. This is the release date in YYYYMMDD format. * Revision information. This is the release date in YYYYMMDD format.
@ -95,38 +74,10 @@
#define __RES 19991006 #define __RES 19991006
/*
* This used to be defined in res_query.c, now it's in herror.c.
* [XXX no it's not. It's in irs/irs_data.c]
* It was
* never extern'd by any *.h file before it was placed here. For thread
* aware programs, the last h_errno value set is stored in res->h_errno.
*
* XXX: There doesn't seem to be a good reason for exposing RES_SET_H_ERRNO
* (and __h_errno_set) to the public via <resolv.h>.
* XXX: __h_errno_set is really part of IRS, not part of the resolver.
* If somebody wants to build and use a resolver that doesn't use IRS,
* what do they do? Perhaps something like
* #ifdef WANT_IRS
* # define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
* #else
* # define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
* #endif
*/
#define RES_SET_H_ERRNO(r,x) \
do \
{ \
(r)->res_h_errno = x; \
__set_h_errno(x); \
} \
while (0)
struct __res_state; /* forward */
/* /*
* Resolver configuration file. * Resolver configuration file.
* Normally not present, but may contain the address of the * Normally not present, but may contain the address of the
* initial name server(s) to query and the domain search list. * inital name server(s) to query and the domain search list.
*/ */
#ifndef _PATH_RESCONF #ifndef _PATH_RESCONF
@ -136,19 +87,19 @@ struct __res_state; /* forward */
typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
res_sendhookact; res_sendhookact;
typedef res_sendhookact (*res_send_qhook) (struct sockaddr_in * const *ns, typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns,
const u_char **query, const u_char **query,
int *querylen, int *querylen,
u_char *ans, u_char *ans,
int anssiz, int anssiz,
int *resplen); int *resplen));
typedef res_sendhookact (*res_send_rhook) (const struct sockaddr_in *ns, typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns,
const u_char *query, const u_char *query,
int querylen, int querylen,
u_char *ans, u_char *ans,
int anssiz, int anssiz,
int *resplen); int *resplen));
struct res_sym { struct res_sym {
int number; /* Identifying number, like T_MX */ int number; /* Identifying number, like T_MX */
@ -170,9 +121,10 @@ struct res_sym {
#define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */ #define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
#define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */ #define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
#define RES_DFLRETRY 2 /* Default #/tries. */ #define RES_DFLRETRY 2 /* Default #/tries. */
#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
struct __res_state { struct __res_state {
int retrans; /* retransmission time interval */ int retrans; /* retransmition time interval */
int retry; /* number of times to retransmit */ int retry; /* number of times to retransmit */
u_long options; /* option flags - see below. */ u_long options; /* option flags - see below. */
int nscount; /* number of name servers */ int nscount; /* number of name servers */
@ -193,9 +145,17 @@ struct __res_state {
res_send_qhook qhook; /* query hook */ res_send_qhook qhook; /* query hook */
res_send_rhook rhook; /* response hook */ res_send_rhook rhook; /* response hook */
int res_h_errno; /* last one set for this context */ int res_h_errno; /* last one set for this context */
int _sock; /* PRIVATE: for res_send i/o */ int _vcsock; /* PRIVATE: for res_send VC i/o */
u_int _flags; /* PRIVATE: see below */ u_int _flags; /* PRIVATE: see below */
char pad[52]; /* On an i386 this means 512b total. */ union {
char pad[52]; /* On an i386 this means 512b total. */
struct {
u_int16_t nscount;
u_int16_t nstimes[MAXNS]; /* ms. */
int nssocks[MAXNS];
struct sockaddr_in nsaddrs[MAXNS];
} _ext;
} _u;
}; };
typedef struct __res_state *res_state; typedef struct __res_state *res_state;
@ -229,6 +189,7 @@ typedef struct __res_state *res_state;
#define RES_ROTATE 0x00004000 /* rotate ns list after each query */ #define RES_ROTATE 0x00004000 /* rotate ns list after each query */
#define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */ #define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */
#define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */ #define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */
#define RES_BLAST 0x00020000 /* blast all recursive servers */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
@ -237,7 +198,7 @@ typedef struct __res_state *res_state;
*/ */
#define RES_PRF_STATS 0x00000001 #define RES_PRF_STATS 0x00000001
#define RES_PRF_UPDATE 0x00000002 #define RES_PRF_UPDATE 0x00000002
#define RES_PRF_CLASS 0x00000004 #define RES_PRF_CLASS 0x00000004
#define RES_PRF_CMD 0x00000008 #define RES_PRF_CMD 0x00000008
#define RES_PRF_QUES 0x00000010 #define RES_PRF_QUES 0x00000010
#define RES_PRF_ANS 0x00000020 #define RES_PRF_ANS 0x00000020
@ -253,43 +214,48 @@ typedef struct __res_state *res_state;
/* 0x00008000 */ /* 0x00008000 */
/* Things involving an internal (static) resolver context. */ /* Things involving an internal (static) resolver context. */
#if defined _REENTRANT || defined _LIBC_REENTRANT #if !defined _LIBC || defined _LIBC_REENTRANT
extern struct __res_state *__res_state(void) __attribute__ ((__const__)); extern struct __res_state *__res_state(void) __attribute__ ((__const__));
# if defined __RES_PTHREAD_INTERNAL #define _res (*__res_state())
extern struct __res_state _res;
# else
# define _res (*__res_state())
# endif
#else #else
#ifndef __BIND_NOSTATIC
extern struct __res_state _res; extern struct __res_state _res;
#endif #endif
#endif
#ifndef __BIND_NOSTATIC
#define fp_nquery __fp_nquery #define fp_nquery __fp_nquery
#define fp_query __fp_query #define fp_query __fp_query
#define hostalias __hostalias #define hostalias __hostalias
#define p_query __p_query #define p_query __p_query
#define res_close __res_close #define res_close __res_close
#define res_init __res_init
#define res_isourserver __res_isourserver #define res_isourserver __res_isourserver
#define res_mkquery __res_mkquery
#define res_query __res_query
#define res_querydomain __res_querydomain
#define res_search __res_search
#define res_send __res_send #define res_send __res_send
__BEGIN_DECLS __BEGIN_DECLS
void fp_nquery (const u_char *, int, FILE *) __THROW; void fp_nquery __P((const u_char *, int, FILE *));
void fp_query (const u_char *, FILE *) __THROW; void fp_query __P((const u_char *, FILE *));
const char * hostalias (const char *) __THROW; const char * hostalias __P((const char *));
void p_query (const u_char *) __THROW; void p_query __P((const u_char *));
void res_close (void) __THROW; void res_close __P((void));
int res_init (void) __THROW; int res_init __P((void));
int res_isourserver (const struct sockaddr_in *) __THROW; int res_isourserver __P((const struct sockaddr_in *));
int res_mkquery (int, const char *, int, int, const u_char *, int res_mkquery __P((int, const char *, int, int, const u_char *,
int, const u_char *, u_char *, int) __THROW; int, const u_char *, u_char *, int));
int res_query (const char *, int, int, u_char *, int) __THROW; int res_query __P((const char *, int, int, u_char *, int));
int res_querydomain (const char *, const char *, int, int, int res_querydomain __P((const char *, const char *, int, int,
u_char *, int) __THROW; u_char *, int));
int res_search (const char *, int, int, u_char *, int) __THROW; int res_search __P((const char *, int, int, u_char *, int));
int res_send (const u_char *, int, u_char *, int) __THROW; int res_send __P((const u_char *, int, u_char *, int));
__END_DECLS __END_DECLS
#endif
#if !defined(SHARED_LIBBIND) || defined(_LIBC) #if !defined(SHARED_LIBBIND) || defined(LIB)
/* /*
* If libbind is a shared object (well, DLL anyway) * If libbind is a shared object (well, DLL anyway)
* these externs break the linker when resolv.h is * these externs break the linker when resolv.h is
@ -308,6 +274,7 @@ extern const struct res_sym __p_rcode_syms[];
#define b64_pton __b64_pton #define b64_pton __b64_pton
#define dn_comp __dn_comp #define dn_comp __dn_comp
#define dn_count_labels __dn_count_labels #define dn_count_labels __dn_count_labels
#define dn_expand __dn_expand
#define dn_skipname __dn_skipname #define dn_skipname __dn_skipname
#define fp_resstat __fp_resstat #define fp_resstat __fp_resstat
#define loc_aton __loc_aton #define loc_aton __loc_aton
@ -326,7 +293,6 @@ extern const struct res_sym __p_rcode_syms[];
#define putlong __putlong #define putlong __putlong
#define putshort __putshort #define putshort __putshort
#define res_dnok __res_dnok #define res_dnok __res_dnok
#define res_findzonecut __res_findzonecut
#define res_hnok __res_hnok #define res_hnok __res_hnok
#define res_hostalias __res_hostalias #define res_hostalias __res_hostalias
#define res_mailok __res_mailok #define res_mailok __res_mailok
@ -347,63 +313,62 @@ extern const struct res_sym __p_rcode_syms[];
#define sym_ntos __sym_ntos #define sym_ntos __sym_ntos
#define sym_ston __sym_ston #define sym_ston __sym_ston
__BEGIN_DECLS __BEGIN_DECLS
int res_hnok (const char *) __THROW; int res_hnok __P((const char *));
int res_ownok (const char *) __THROW; int res_ownok __P((const char *));
int res_mailok (const char *) __THROW; int res_mailok __P((const char *));
int res_dnok (const char *) __THROW; int res_dnok __P((const char *));
int sym_ston (const struct res_sym *, const char *, int *) __THROW; int sym_ston __P((const struct res_sym *, const char *, int *));
const char * sym_ntos (const struct res_sym *, int, int *) __THROW; const char * sym_ntos __P((const struct res_sym *, int, int *));
const char * sym_ntop (const struct res_sym *, int, int *) __THROW; const char * sym_ntop __P((const struct res_sym *, int, int *));
int b64_ntop (u_char const *, size_t, char *, size_t) __THROW; int b64_ntop __P((u_char const *, size_t, char *, size_t));
int b64_pton (char const *, u_char *, size_t) __THROW; int b64_pton __P((char const *, u_char *, size_t));
int loc_aton (const char *__ascii, u_char *__binary) __THROW; int loc_aton __P((const char *ascii, u_char *binary));
const char * loc_ntoa (const u_char *__binary, char *__ascii) __THROW; const char * loc_ntoa __P((const u_char *binary, char *ascii));
int dn_skipname (const u_char *, const u_char *) __THROW; int dn_skipname __P((const u_char *, const u_char *));
void putlong (u_int32_t, u_char *) __THROW; void putlong __P((u_int32_t, u_char *));
void putshort (u_int16_t, u_char *) __THROW; void putshort __P((u_int16_t, u_char *));
const char * p_class (int) __THROW; const char * p_class __P((int));
const char * p_time (u_int32_t) __THROW; const char * p_time __P((u_int32_t));
const char * p_type (int) __THROW; const char * p_type __P((int));
const char * p_rcode (int) __THROW; const char * p_rcode __P((int));
const u_char * p_cdnname (const u_char *, const u_char *, int, FILE *) const u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *));
__THROW; const u_char * p_cdname __P((const u_char *, const u_char *, FILE *));
const u_char * p_cdname (const u_char *, const u_char *, FILE *) __THROW; const u_char * p_fqnname __P((const u_char *cp, const u_char *msg,
const u_char * p_fqnname (const u_char *cp, const u_char *msg, int, char *, int));
int, char *, int) __THROW; const u_char * p_fqname __P((const u_char *, const u_char *, FILE *));
const u_char * p_fqname (const u_char *, const u_char *, FILE *) __THROW; const char * p_option __P((u_long option));
const char * p_option (u_long option) __THROW; char * p_secstodate __P((u_long));
char * p_secstodate (u_long) __THROW; int dn_count_labels __P((const char *));
int dn_count_labels (const char *) __THROW; int dn_comp __P((const char *, u_char *, int,
int dn_comp (const char *, u_char *, int, u_char **, u_char **));
u_char **, u_char **) __THROW; int dn_expand __P((const u_char *, const u_char *, const u_char *,
int dn_expand (const u_char *, const u_char *, const u_char *, char *, int));
char *, int) __THROW; u_int res_randomid __P((void));
u_int res_randomid (void) __THROW; int res_nameinquery __P((const char *, int, int,
int res_nameinquery (const char *, int, int, const u_char *, const u_char *));
const u_char *, const u_char *) __THROW; int res_queriesmatch __P((const u_char *, const u_char *,
int res_queriesmatch (const u_char *, const u_char *, const u_char *, const u_char *));
const u_char *, const u_char *) __THROW; const char * p_section __P((int section, int opcode));
const char * p_section (int section, int opcode) __THROW;
/* Things involving a resolver context. */ /* Things involving a resolver context. */
int res_ninit (res_state) __THROW; int res_ninit __P((res_state));
int res_nisourserver (const res_state, int res_nisourserver __P((const res_state,
const struct sockaddr_in *) __THROW; const struct sockaddr_in *));
void fp_resstat (const res_state, FILE *) __THROW; void fp_resstat __P((const res_state, FILE *));
void res_npquery (const res_state, const u_char *, int, FILE *) __THROW; void res_npquery __P((const res_state, const u_char *, int, FILE *));
const char * res_hostalias (const res_state, const char *, const char * res_hostalias __P((const res_state, const char *,
char *, size_t) __THROW; char *, size_t));
int res_nquery (res_state, int res_nquery __P((res_state,
const char *, int, int, u_char *, int) __THROW; const char *, int, int, u_char *, int));
int res_nsearch (res_state, const char *, int, int res_nsearch __P((res_state, const char *, int,
int, u_char *, int) __THROW; int, u_char *, int));
int res_nquerydomain (res_state, int res_nquerydomain __P((res_state,
const char *, const char *, int, int, const char *, const char *, int, int,
u_char *, int) __THROW; u_char *, int));
int res_nmkquery (res_state, int res_nmkquery __P((res_state,
int, const char *, int, int, const u_char *, int, const char *, int, int, const u_char *,
int, const u_char *, u_char *, int) __THROW; int, const u_char *, u_char *, int));
int res_nsend (res_state, const u_char *, int, u_char *, int) __THROW; int res_nsend __P((res_state, const u_char *, int, u_char *, int));
void res_nclose (res_state) __THROW; void res_nclose __P((res_state));
__END_DECLS __END_DECLS
#endif /* !_RESOLV_H_ */ #endif /* !_RESOLV_H_ */