2013-01-02 20:01:50 +01:00
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/* Copyright (C) 2000-2013 Free Software Foundation, Inc.
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2000-12-08 23:39:54 +01:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 06:58:11 +02:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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2000-12-08 23:39:54 +01:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 06:58:11 +02:00
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Lesser General Public License for more details.
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2000-12-08 23:39:54 +01:00
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2001-07-06 06:58:11 +02:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-10 00:18:22 +01:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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2000-12-08 23:39:54 +01:00
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#include <errno.h>
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#include <netdb.h>
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#include "nsswitch.h"
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/* Set up NIP to run through the services. If ALL is zero, use NIP's
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current location if it's not nil. Return nonzero if there are no
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services (left). */
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static int
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setup (const char *func_name, db_lookup_function lookup_fct,
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void **fctp, service_user **nip, service_user **startp, int all)
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{
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int no_more;
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if (*startp == NULL)
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{
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2007-10-30 01:48:09 +01:00
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no_more = lookup_fct (nip, func_name, NULL, fctp);
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2000-12-08 23:39:54 +01:00
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*startp = no_more ? (service_user *) -1l : *nip;
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}
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else if (*startp == (service_user *) -1l)
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/* No services at all. */
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return 1;
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else
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{
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if (all || !*nip)
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/* Reset to the beginning of the service list. */
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*nip = *startp;
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/* Look up the first function. */
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2007-10-30 01:48:09 +01:00
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no_more = __nss_lookup (nip, func_name, NULL, fctp);
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2000-12-08 23:39:54 +01:00
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}
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return no_more;
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}
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void
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__nss_setent (const char *func_name, db_lookup_function lookup_fct,
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service_user **nip, service_user **startp,
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service_user **last_nip, int stayopen, int *stayopen_tmp,
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int res)
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{
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2002-11-10 12:06:36 +01:00
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union
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{
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setent_function f;
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void *ptr;
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} fct;
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2000-12-08 23:39:54 +01:00
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int no_more;
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Update.
2004-08-04 Jakub Jelinek <jakub@redhat.com>
* hesiod/hesiod.c (__hesiod_res_get): Use calloc instead of malloc +
memset.
(__hesiod_res_set): Free nsaddrs.
* include/resolv.h (__res_maybe_init): Add prototype.
* resolv/resolv.h (struct __res_state): Add _u._ext.initstamp field.
* resolv/Versions (libc): Add __res_maybe_init@@GLIBC_PRIVATE.
* resolv/res_libc.c (__res_initstamp, lock): New variables.
(res_init): Increase __res_initstamp.
(__res_maybe_init): New function.
* resolv/res_init.c (__res_vinit): Initialize _u._ext.initstamp.
* hesiod/hesiod.c (__hesiod_res_get): Use __res_maybe_init instead
of RES_INIT check and {res_ninit,__res_ninit,res_init} call.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Likewise.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
_nss_dns_gethostbyaddr_r): Likewise.
* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
_nss_dns_getnetbyaddr_r): Likewise.
* resolv/gethnamaddr.c (gethostbyname, gethostbyname2,
gethostbyaddr): Likewise.
* resolv/res_data.c (fp_nquery, res_mkquery, res_mkupdate,
res_isourserver, res_sendsigned, res_update, res_search,
res_querydomain): Likewise.
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)): Likewise.
* nss/digits_dots.c (__nss_hostname_digits_dots): Likewise.
* nss/getnssent_r.c (__nss_setent, __nss_endent, __nss_getent_r):
Likewise.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Set ai_family for
V4-mapped IPv6 addresses and req->ai_family==AF_INET.
Reported by A. Guru <a.guru@sympatico.ca>.
* po/pl.po: Likewise.
characters than necessary.
2004-08-06 01:32:24 +02:00
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if (res && __res_maybe_init (&_res, 0) == -1)
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2000-12-08 23:39:54 +01:00
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{
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__set_h_errno (NETDB_INTERNAL);
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return;
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}
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/* Cycle through the services and run their `setXXent' functions until
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we find an available service. */
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2002-11-10 12:06:36 +01:00
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no_more = setup (func_name, lookup_fct, &fct.ptr, nip,
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2000-12-08 23:39:54 +01:00
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startp, 1);
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while (! no_more)
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{
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int is_last_nip = *nip == *last_nip;
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enum nss_status status;
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2002-08-31 02:02:18 +02:00
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2000-12-08 23:39:54 +01:00
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if (stayopen_tmp)
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2002-11-10 12:06:36 +01:00
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status = DL_CALL_FCT (fct.f, (*stayopen_tmp));
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2000-12-08 23:39:54 +01:00
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else
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2002-11-10 12:06:36 +01:00
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status = DL_CALL_FCT (fct.f, (0));
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2000-12-08 23:39:54 +01:00
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2007-10-30 01:48:09 +01:00
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no_more = __nss_next2 (nip, func_name, NULL, &fct.ptr, status, 0);
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2000-12-08 23:39:54 +01:00
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if (is_last_nip)
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*last_nip = *nip;
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}
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if (stayopen_tmp)
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*stayopen_tmp = stayopen;
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}
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void
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__nss_endent (const char *func_name, db_lookup_function lookup_fct,
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service_user **nip, service_user **startp,
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service_user **last_nip, int res)
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{
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2002-11-10 12:06:36 +01:00
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union
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{
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endent_function f;
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void *ptr;
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} fct;
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2000-12-08 23:39:54 +01:00
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int no_more;
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Update.
2004-08-04 Jakub Jelinek <jakub@redhat.com>
* hesiod/hesiod.c (__hesiod_res_get): Use calloc instead of malloc +
memset.
(__hesiod_res_set): Free nsaddrs.
* include/resolv.h (__res_maybe_init): Add prototype.
* resolv/resolv.h (struct __res_state): Add _u._ext.initstamp field.
* resolv/Versions (libc): Add __res_maybe_init@@GLIBC_PRIVATE.
* resolv/res_libc.c (__res_initstamp, lock): New variables.
(res_init): Increase __res_initstamp.
(__res_maybe_init): New function.
* resolv/res_init.c (__res_vinit): Initialize _u._ext.initstamp.
* hesiod/hesiod.c (__hesiod_res_get): Use __res_maybe_init instead
of RES_INIT check and {res_ninit,__res_ninit,res_init} call.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Likewise.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
_nss_dns_gethostbyaddr_r): Likewise.
* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
_nss_dns_getnetbyaddr_r): Likewise.
* resolv/gethnamaddr.c (gethostbyname, gethostbyname2,
gethostbyaddr): Likewise.
* resolv/res_data.c (fp_nquery, res_mkquery, res_mkupdate,
res_isourserver, res_sendsigned, res_update, res_search,
res_querydomain): Likewise.
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)): Likewise.
* nss/digits_dots.c (__nss_hostname_digits_dots): Likewise.
* nss/getnssent_r.c (__nss_setent, __nss_endent, __nss_getent_r):
Likewise.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Set ai_family for
V4-mapped IPv6 addresses and req->ai_family==AF_INET.
Reported by A. Guru <a.guru@sympatico.ca>.
* po/pl.po: Likewise.
characters than necessary.
2004-08-06 01:32:24 +02:00
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if (res && __res_maybe_init (&_res, 0) == -1)
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2000-12-08 23:39:54 +01:00
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{
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__set_h_errno (NETDB_INTERNAL);
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return;
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}
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/* Cycle through all the services and run their endXXent functions. */
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2002-11-10 12:06:36 +01:00
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no_more = setup (func_name, lookup_fct, &fct.ptr, nip, startp, 1);
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2000-12-08 23:39:54 +01:00
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while (! no_more)
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{
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/* Ignore status, we force check in __NSS_NEXT. */
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2002-11-10 12:06:36 +01:00
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DL_CALL_FCT (fct.f, ());
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2000-12-08 23:39:54 +01:00
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if (*nip == *last_nip)
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/* We have processed all services which were used. */
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break;
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2007-10-30 01:48:09 +01:00
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no_more = __nss_next2 (nip, func_name, NULL, &fct.ptr, 0, 1);
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2000-12-08 23:39:54 +01:00
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}
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*last_nip = *nip = NULL;
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}
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int
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__nss_getent_r (const char *getent_func_name,
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const char *setent_func_name,
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db_lookup_function lookup_fct,
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service_user **nip, service_user **startp,
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service_user **last_nip, int *stayopen_tmp, int res,
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void *resbuf, char *buffer, size_t buflen,
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void **result, int *h_errnop)
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{
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2002-11-10 12:06:36 +01:00
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union
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{
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getent_function f;
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void *ptr;
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} fct;
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2000-12-08 23:39:54 +01:00
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int no_more;
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enum nss_status status;
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Update.
2004-08-04 Jakub Jelinek <jakub@redhat.com>
* hesiod/hesiod.c (__hesiod_res_get): Use calloc instead of malloc +
memset.
(__hesiod_res_set): Free nsaddrs.
* include/resolv.h (__res_maybe_init): Add prototype.
* resolv/resolv.h (struct __res_state): Add _u._ext.initstamp field.
* resolv/Versions (libc): Add __res_maybe_init@@GLIBC_PRIVATE.
* resolv/res_libc.c (__res_initstamp, lock): New variables.
(res_init): Increase __res_initstamp.
(__res_maybe_init): New function.
* resolv/res_init.c (__res_vinit): Initialize _u._ext.initstamp.
* hesiod/hesiod.c (__hesiod_res_get): Use __res_maybe_init instead
of RES_INIT check and {res_ninit,__res_ninit,res_init} call.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Likewise.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
_nss_dns_gethostbyaddr_r): Likewise.
* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
_nss_dns_getnetbyaddr_r): Likewise.
* resolv/gethnamaddr.c (gethostbyname, gethostbyname2,
gethostbyaddr): Likewise.
* resolv/res_data.c (fp_nquery, res_mkquery, res_mkupdate,
res_isourserver, res_sendsigned, res_update, res_search,
res_querydomain): Likewise.
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)): Likewise.
* nss/digits_dots.c (__nss_hostname_digits_dots): Likewise.
* nss/getnssent_r.c (__nss_setent, __nss_endent, __nss_getent_r):
Likewise.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Set ai_family for
V4-mapped IPv6 addresses and req->ai_family==AF_INET.
Reported by A. Guru <a.guru@sympatico.ca>.
* po/pl.po: Likewise.
characters than necessary.
2004-08-06 01:32:24 +02:00
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if (res && __res_maybe_init (&_res, 0) == -1)
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2000-12-08 23:39:54 +01:00
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{
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2002-08-31 02:02:18 +02:00
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*h_errnop = NETDB_INTERNAL;
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2000-12-08 23:39:54 +01:00
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*result = NULL;
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return errno;
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}
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/* Initialize status to return if no more functions are found. */
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status = NSS_STATUS_NOTFOUND;
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/* Run through available functions, starting with the same function last
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run. We will repeat each function as long as it succeeds, and then go
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on to the next service action. */
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2002-11-10 12:06:36 +01:00
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no_more = setup (getent_func_name, lookup_fct, &fct.ptr, nip,
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2000-12-08 23:39:54 +01:00
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startp, 0);
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while (! no_more)
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{
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int is_last_nip = *nip == *last_nip;
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2002-11-10 12:06:36 +01:00
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status = DL_CALL_FCT (fct.f,
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(resbuf, buffer, buflen, &errno, &h_errno));
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2000-12-08 23:39:54 +01:00
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2011-04-23 03:34:32 +02:00
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/* The status is NSS_STATUS_TRYAGAIN and errno is ERANGE the
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2000-12-08 23:39:54 +01:00
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provided buffer is too small. In this case we should give
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the user the possibility to enlarge the buffer and we should
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not simply go on with the next service (even if the TRYAGAIN
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action tells us so). */
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if (status == NSS_STATUS_TRYAGAIN
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&& (h_errnop == NULL || *h_errnop == NETDB_INTERNAL)
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&& errno == ERANGE)
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break;
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do
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{
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2007-10-30 01:48:09 +01:00
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no_more = __nss_next2 (nip, getent_func_name, NULL, &fct.ptr,
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status, 0);
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2000-12-08 23:39:54 +01:00
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if (is_last_nip)
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*last_nip = *nip;
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if (! no_more)
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{
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/* Call the `setXXent' function. This wasn't done before. */
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2002-11-10 12:06:36 +01:00
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union
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{
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setent_function f;
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void *ptr;
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} sfct;
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2000-12-08 23:39:54 +01:00
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2007-10-30 01:48:09 +01:00
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no_more = __nss_lookup (nip, setent_func_name, NULL, &sfct.ptr);
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2000-12-08 23:39:54 +01:00
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if (! no_more)
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{
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if (stayopen_tmp)
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2002-11-10 12:06:36 +01:00
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status = DL_CALL_FCT (sfct.f, (*stayopen_tmp));
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2000-12-08 23:39:54 +01:00
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else
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2002-11-10 12:06:36 +01:00
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status = DL_CALL_FCT (sfct.f, (0));
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2000-12-08 23:39:54 +01:00
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}
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else
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status = NSS_STATUS_NOTFOUND;
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}
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}
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while (! no_more && status != NSS_STATUS_SUCCESS);
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}
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*result = status == NSS_STATUS_SUCCESS ? resbuf : NULL;
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2002-09-12 04:58:43 +02:00
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return (status == NSS_STATUS_SUCCESS ? 0
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: status != NSS_STATUS_TRYAGAIN ? ENOENT
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/* h_errno functions only set errno if h_errno is NETDB_INTERNAL. */
|
|
|
|
|
: (h_errnop == NULL || *h_errnop == NETDB_INTERNAL) ? errno
|
|
|
|
|
: EAGAIN);
|
2000-12-08 23:39:54 +01:00
|
|
|
|
}
|