diff options
Diffstat (limited to 'nis/nis_lookup.c')
| -rw-r--r-- | nis/nis_lookup.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/nis/nis_lookup.c b/nis/nis_lookup.c deleted file mode 100644 index f6d84abecd..0000000000 --- a/nis/nis_lookup.c +++ /dev/null @@ -1,219 +0,0 @@ -/* Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Thorsten Kukuk <kukuk@uni-paderborn.de>, 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <string.h> -#include <rpcsvc/nis.h> -#include "nis_xdr.h" -#include "nis_intern.h" -#include <libnsl.h> -#include <shlib-compat.h> - - -nis_result * -nis_lookup (const_nis_name name, const unsigned int flags) -{ - nis_result *res = calloc (1, sizeof (nis_result)); - struct ns_request req; - nis_name *names; - nis_error status; - int link_first_try = 0; - int count_links = 0; /* We will follow only 16 links in the deep */ - int done = 0; - int name_nr = 0; - nis_name namebuf[2] = {NULL, NULL}; - - if (res == NULL) - return NULL; - - if ((flags & EXPAND_NAME) && (name[strlen (name) - 1] != '.')) - { - names = nis_getnames (name); - if (names == NULL) - { - NIS_RES_STATUS (res) = NIS_NAMEUNREACHABLE; - return res; - } - } - else - { - names = namebuf; - names[0] = (nis_name)name; - } - - req.ns_name = names[0]; - while (!done) - { - dir_binding bptr; - directory_obj *dir = NULL; - req.ns_object.ns_object_len = 0; - req.ns_object.ns_object_val = NULL; - - status = __prepare_niscall (req.ns_name, &dir, &bptr, flags); - if (__glibc_unlikely (status != NIS_SUCCESS)) - { - NIS_RES_STATUS (res) = status; - goto out; - } - - do - { - static const struct timeval RPCTIMEOUT = {10, 0}; - enum clnt_stat result; - - again: - result = clnt_call (bptr.clnt, NIS_LOOKUP, - (xdrproc_t) _xdr_ns_request, - (caddr_t) &req, (xdrproc_t) _xdr_nis_result, - (caddr_t) res, RPCTIMEOUT); - - if (result != RPC_SUCCESS) - status = NIS_RPCERROR; - else - { - status = NIS_SUCCESS; - - if (NIS_RES_STATUS (res) == NIS_SUCCESS) - { - if (__type_of (NIS_RES_OBJECT (res)) == NIS_LINK_OBJ - && (flags & FOLLOW_LINKS)) /* We are following links */ - { - /* if we hit the link limit, bail */ - if (count_links > NIS_MAXLINKS) - { - NIS_RES_STATUS (res) = NIS_LINKNAMEERROR; - break; - } - ++count_links; - req.ns_name = - strdupa (NIS_RES_OBJECT (res)->LI_data.li_name); - - /* The following is a non-obvious optimization. A - nis_freeresult call would call xdr_free as the - following code. But it also would unnecessarily - free the result structure. We avoid this here - along with the necessary tests. */ - xdr_free ((xdrproc_t) _xdr_nis_result, (char *) res); - memset (res, '\0', sizeof (*res)); - - link_first_try = 1; /* Try at first the old binding */ - goto again; - } - } - else - if (NIS_RES_STATUS (res) == NIS_SYSTEMERROR - || NIS_RES_STATUS (res) == NIS_NOSUCHNAME - || NIS_RES_STATUS (res) == NIS_NOT_ME) - { - if (link_first_try) - { - __nisbind_destroy (&bptr); - nis_free_directory (dir); - /* Otherwise __nisfind_server will not do anything. */ - dir = NULL; - - if (__nisfind_server (req.ns_name, 1, &dir, &bptr, - flags & ~MASTER_ONLY) - != NIS_SUCCESS) - goto out; - } - else - if (__nisbind_next (&bptr) != NIS_SUCCESS) - { - /* No more servers to search. Try parent. */ - const char *ndomain = __nis_domain_of (req.ns_name); - req.ns_name = strdupa (ndomain); - if (strcmp (req.ns_name, ".") == 0) - { - NIS_RES_STATUS (res) = NIS_NAMEUNREACHABLE; - goto out; - } - - __nisbind_destroy (&bptr); - nis_free_directory (dir); - dir = NULL; - status = __prepare_niscall (req.ns_name, &dir, - &bptr, flags); - if (__glibc_unlikely (status != NIS_SUCCESS)) - { - NIS_RES_STATUS (res) = status; - goto out; - } - goto again; - } - - while (__nisbind_connect (&bptr) != NIS_SUCCESS) - { - if (__nisbind_next (&bptr) != NIS_SUCCESS) - { - nis_free_directory (dir); - goto out; - } - } - goto again; - } - break; - } - link_first_try = 0; /* Set it back */ - } - while ((flags & HARD_LOOKUP) && status == NIS_RPCERROR); - - __nisbind_destroy (&bptr); - nis_free_directory (dir); - - if (status != NIS_SUCCESS) - { - NIS_RES_STATUS (res) = status; - goto out; - } - - switch (NIS_RES_STATUS (res)) - { - case NIS_PARTIAL: - case NIS_SUCCESS: - case NIS_S_SUCCESS: - case NIS_LINKNAMEERROR: /* We follow to max links */ - case NIS_UNAVAIL: /* NIS+ is not installed, or all servers are down */ - ++done; - break; - default: - /* Try the next domainname if we don't follow a link */ - if (count_links) - { - free (req.ns_name); - NIS_RES_STATUS (res) = NIS_LINKNAMEERROR; - ++done; - break; - } - ++name_nr; - if (names[name_nr] == NULL) - { - ++done; - break; - } - req.ns_name = names[name_nr]; - break; - } - } - - out: - if (names != namebuf) - nis_freenames (names); - - return res; -} -libnsl_hidden_nolink_def (nis_lookup, GLIBC_2_1) |