1995-02-18 02:27:10 +01:00
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/*
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* Copyright (c) 1985, 1993
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* The Regents of the University of California. All rights reserved.
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2004-09-18 20:00:50 +02:00
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*
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1995-02-18 02:27:10 +01:00
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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2004-09-18 20:00:50 +02:00
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*
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1995-02-18 02:27:10 +01:00
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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1999-12-04 19:05:55 +01:00
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*/
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/*
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1995-02-18 02:27:10 +01:00
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* Portions Copyright (c) 1993 by Digital Equipment Corporation.
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2004-09-18 20:00:50 +02:00
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*
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1995-02-18 02:27:10 +01:00
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies, and that
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* the name of Digital Equipment Corporation not be used in advertising or
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* publicity pertaining to distribution of the document or software without
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* specific, written prior permission.
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2004-09-18 20:00:50 +02:00
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*
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1995-02-18 02:27:10 +01:00
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* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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1999-12-04 19:05:55 +01:00
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*/
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/*
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* Portions Copyright (c) 1996-1999 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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1995-02-18 02:27:10 +01:00
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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1999-12-04 19:05:55 +01:00
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static const char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
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Update.
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.
2000-07-20 00:03:58 +02:00
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static const char rcsid[] = "$BINDId: res_mkquery.c,v 8.12 1999/10/13 16:39:40 vixie Exp $";
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1995-02-18 02:27:10 +01:00
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#endif /* LIBC_SCCS and not lint */
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Update.
Wed Aug 14 21:36:16 1996 Ulrich Drepper <drepper@cygnus.com>
* stdlib/strtod.c (STRTOD): Correct assertion about size of
wint_t and wchar_t. Reported by David Mosberger-Tang.
Mon Aug 12 22:40:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/dl-lookup.c (_dl_lookup_symbol): Remove fifth parameter
RELOC_ADDR and make NOPLT a set of flags. All callers
changed. Delete condition that checks for resolving to the
location being filled in. Add condition to skip the
executable's symbols if requested.
* elf/link.h: Change declaration of _dl_lookup_symbol
accordingly.
(DL_LOOKUP_NOEXEC, DL_LOOKUP_NOPLT): New definitions.
* elf/dl-reloc.c (RESOLVE): Remove second parameter and rename
NOPLT to FLAGS.
* elf/dl-runtime.c (RESOLVE): Likewise.
* elf/rtld.c (RESOLVE): Likewise.
* sysdeps/m68k/dl-machine.h (elf_machine_rela): Pass
DL_LOOKUP_NOEXEC as second argument to the RESOLVE macro if
processing a copy reloc, DL_LOOKUP_NOPLT for a jump slot
reloc, zero otherwise.
* sysdeps/alpha/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise.
* sysdeps/mips/dl-machine.h (elf_machine_rel): Likewise.
Wed Aug 14 17:57:08 1996 Ulrich Drepper <drepper@cygnus.com>
* MakeTAGS: Clean up use of --omit-header and -n for xgettext.
* po/header.pot: Add empty line at end.
Sun Aug 11 13:45:33 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* MakeTAGS (all-pot): Remove $P/errlist.pot, all error messages
are now in $P/stdio-common.pot.
(XGETTEXTFLAGS-errlist.pot): Variable removed.
Mon Aug 12 19:25:03 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makerules (do-ar, o-iterator-doit): Compute path to autolock
script at run time, not configure time.
* config.make.in, configure.in: Undo previous change.
Wed Aug 14 13:20:02 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/close.S: Push return value of thread
on stack as argument for `_exit'. Reported by Andreas Schwab.
Mon Aug 12 19:36:25 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/clone.S: New file.
Wed Aug 14 04:22:35 1996 Richard Henderson <rth@tamu.edu>
* elf/dl-load.c (_dl_map_object): Save name in malloced memory.
(_dl_map_object_from_fd): Free name on error.
Wed Aug 14 13:00:09 1996 Ulrich Drepper <drepper@cygnus.com>
* string/strdup.c: Use result of memcpy to avoid reloading.
Tue Aug 13 00:55:03 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* shadow/sgetspent_r.c (__sgetspent_r): Copy string to buffer, not
the other way round.
* resolv/Makefile (libresolv-routines): Add base64, inet_net_ntop,
inet_net_pton, inet_net.
* resolv/arpa/nameser.h (__BIND): Update version number.
Mon Aug 12 19:03:22 1996 Thomas Bushnell n/BSG <thomas@psilocin.gnu.ai.mit.edu>
* sysdeps/generic/gnu/types.h: Declare __fd_mask as `unsigned long'.
* mach/Makefile (mach/mach_host.uh): Depend on
$(objpfx)/mach-syscalls.mk.
($(objpfx)mach-shortcuts.h): Depend on $(objpfx)mach/mach_host.h.
(This fixes a make loop; thanks to Marcus Daniels
<marcus@sysc.pdx.edu> for the patch.)
1996-08-14 23:45:21 +02:00
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#include <sys/types.h>
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1995-02-18 02:27:10 +01:00
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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1995-07-26 12:14:02 +02:00
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#include <netdb.h>
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1995-02-18 02:27:10 +01:00
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#include <resolv.h>
|
1999-12-04 19:05:55 +01:00
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#include <stdio.h>
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#include <string.h>
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1995-02-18 02:27:10 +01:00
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1999-12-04 19:05:55 +01:00
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/* Options. Leave them on. */
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/* #define DEBUG */
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2004-09-18 20:00:50 +02:00
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#ifdef _LIBC
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# include <hp-timing.h>
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# if HP_TIMING_AVAIL
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# define RANDOM_BITS(Var) { uint64_t v64; HP_TIMING_NOW (v64); Var = v64; }
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# endif
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#endif
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1995-02-18 02:27:10 +01:00
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/*
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* Form all types of queries.
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* Returns the size of the result or -1.
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*/
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int
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1999-12-04 19:05:55 +01:00
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res_nmkquery(res_state statp,
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int op, /* opcode of query */
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const char *dname, /* domain name */
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int class, int type, /* class and type of query */
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const u_char *data, /* resource record data */
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int datalen, /* length of data */
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const u_char *newrr_in, /* new rr for modify or append */
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u_char *buf, /* buffer to put query */
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int buflen) /* size of buffer */
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1995-02-18 02:27:10 +01:00
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{
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register HEADER *hp;
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register u_char *cp;
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register int n;
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u_char *dnptrs[20], **dpp, **lastdnptr;
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#ifdef DEBUG
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1999-12-04 19:05:55 +01:00
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if (statp->options & RES_DEBUG)
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printf(";; res_nmkquery(%s, %s, %s, %s)\n",
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_res_opcodes[op], dname, p_class(class), p_type(type));
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1995-02-18 02:27:10 +01:00
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#endif
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/*
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* Initialize header fields.
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*/
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if ((buf == NULL) || (buflen < HFIXEDSZ))
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return (-1);
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1999-12-04 19:05:55 +01:00
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memset(buf, 0, HFIXEDSZ);
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1995-02-18 02:27:10 +01:00
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hp = (HEADER *) buf;
|
2004-09-18 20:00:50 +02:00
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/* We randomize the IDs every time. The old code just
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incremented by one after the initial randomization which
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still predictable if the application does multiple
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requests. */
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2004-12-22 21:10:10 +01:00
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#if 0
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hp->id = htons(++statp->id);
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#else
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hp->id = htons(statp->id);
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2004-09-18 20:00:50 +02:00
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int randombits;
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do
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{
|
2006-05-06 20:04:35 +02:00
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# ifdef RANDOM_BITS
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2004-09-18 20:00:50 +02:00
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RANDOM_BITS (randombits);
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2006-05-06 20:04:35 +02:00
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# else
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2004-09-18 20:00:50 +02:00
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struct timeval tv;
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__gettimeofday (&tv, NULL);
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2004-09-19 22:52:52 +02:00
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randombits = (tv.tv_sec << 8) ^ tv.tv_usec;
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2006-05-06 20:04:35 +02:00
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# endif
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2004-09-18 20:00:50 +02:00
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}
|
2004-10-06 20:28:30 +02:00
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while ((randombits & 0xffff) == 0);
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2004-09-18 20:00:50 +02:00
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statp->id = (statp->id + randombits) & 0xffff;
|
2004-12-22 21:10:10 +01:00
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#endif
|
1995-02-18 02:27:10 +01:00
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hp->opcode = op;
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1999-12-04 19:05:55 +01:00
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hp->rd = (statp->options & RES_RECURSE) != 0;
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1995-02-18 02:27:10 +01:00
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hp->rcode = NOERROR;
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cp = buf + HFIXEDSZ;
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buflen -= HFIXEDSZ;
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dpp = dnptrs;
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*dpp++ = buf;
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*dpp++ = NULL;
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lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
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/*
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* perform opcode specific processing
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*/
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switch (op) {
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case NS_NOTIFY_OP:
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2006-05-06 20:04:35 +02:00
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if ((buflen -= QFIXEDSZ + (data == NULL ? 0 : RRFIXEDSZ)) < 0)
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return (-1);
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goto compose;
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case QUERY:
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1995-02-18 02:27:10 +01:00
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if ((buflen -= QFIXEDSZ) < 0)
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return (-1);
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2006-05-06 20:04:35 +02:00
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compose:
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1995-02-18 02:27:10 +01:00
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if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
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return (-1);
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cp += n;
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buflen -= n;
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2006-05-06 20:04:35 +02:00
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NS_PUT16 (type, cp);
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NS_PUT16 (class, cp);
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1995-02-18 02:27:10 +01:00
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hp->qdcount = htons(1);
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if (op == QUERY || data == NULL)
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break;
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/*
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* Make an additional record for completion domain.
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*/
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n = dn_comp((char *)data, cp, buflen, dnptrs, lastdnptr);
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2006-05-06 20:04:35 +02:00
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if (__builtin_expect (n < 0, 0))
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1995-02-18 02:27:10 +01:00
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return (-1);
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cp += n;
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buflen -= n;
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2006-05-06 20:04:35 +02:00
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NS_PUT16 (T_NULL, cp);
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NS_PUT16 (class, cp);
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NS_PUT32 (0, cp);
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NS_PUT16 (0, cp);
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1995-02-18 02:27:10 +01:00
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hp->arcount = htons(1);
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break;
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case IQUERY:
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/*
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* Initialize answer section
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*/
|
2006-05-06 20:04:35 +02:00
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if (__builtin_expect (buflen < 1 + RRFIXEDSZ + datalen, 0))
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1995-02-18 02:27:10 +01:00
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return (-1);
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*cp++ = '\0'; /* no domain name */
|
2006-05-06 20:04:35 +02:00
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NS_PUT16 (type, cp);
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NS_PUT16 (class, cp);
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NS_PUT32 (0, cp);
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NS_PUT16 (datalen, cp);
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1995-02-18 02:27:10 +01:00
|
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|
if (datalen) {
|
1999-12-04 19:05:55 +01:00
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memcpy(cp, data, datalen);
|
1995-02-18 02:27:10 +01:00
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|
cp += datalen;
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|
}
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hp->ancount = htons(1);
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|
break;
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|
default:
|
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|
|
return (-1);
|
|
|
|
}
|
|
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|
return (cp - buf);
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|
|
|
}
|
2004-10-18 07:10:37 +02:00
|
|
|
libresolv_hidden_def (res_nmkquery)
|