127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
/* Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@uni-paderborn.de>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <string.h>
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#include <rpcsvc/nis.h>
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#include "nis_intern.h"
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nis_result *
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nis_lookup (const_nis_name name, const u_long flags)
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{
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nis_result *res;
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struct ns_request req;
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nis_name *names;
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nis_error status;
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int count_links = 0; /* We will follow only 16 links in the deep */
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int done = 0;
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int name_nr = 0;
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nis_name namebuf[2] = {NULL, NULL};
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res = calloc (1, sizeof (nis_result));
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if (flags & EXPAND_NAME)
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{
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names = nis_getnames (name);
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if (names == NULL)
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{
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res->status = NIS_NAMEUNREACHABLE;
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return res;
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}
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}
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else
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{
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names = namebuf;
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names[0] = (nis_name) name;
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}
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req.ns_name = names[0];
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while (!done)
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{
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req.ns_object.ns_object_len = 0;
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req.ns_object.ns_object_val = NULL;
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memset (res, '\0', sizeof (nis_result));
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status = __do_niscall (req.ns_name, NIS_LOOKUP,
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(xdrproc_t) xdr_ns_request,
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(caddr_t) & req,
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(xdrproc_t) xdr_nis_result,
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(caddr_t) res, flags, NULL);
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if (status != NIS_SUCCESS)
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res->status = status;
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switch (res->status)
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{
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case NIS_PARTIAL:
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case NIS_SUCCESS:
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case NIS_S_SUCCESS:
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if (__type_of(NIS_RES_OBJECT (res)) == NIS_LINK_OBJ &&
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flags & FOLLOW_LINKS) /* We are following links */
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{
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/* if we hit the link limit, bail */
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if (count_links > NIS_MAXLINKS)
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{
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res->status = NIS_LINKNAMEERROR;
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++done;
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break;
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}
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if (count_links)
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free (req.ns_name);
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++count_links;
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req.ns_name = strdup (NIS_RES_OBJECT (res)->LI_data.li_name);
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nis_freeresult (res);
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res = calloc (1, sizeof (nis_result));
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}
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else
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++done;
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break;
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case NIS_CBRESULTS:
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/* The callback is handled in __do_niscall2 */
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++done;
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break;
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case NIS_UNAVAIL:
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/* NIS+ is not installed, or all servers are down */
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++done;
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break;
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default:
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/* Try the next domainname if we don't follow a link */
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if (count_links)
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{
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free (req.ns_name);
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res->status = NIS_LINKNAMEERROR;
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++done;
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break;
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}
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++name_nr;
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if (names[name_nr] == NULL)
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{
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++done;
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break;
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}
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req.ns_name = names[name_nr];
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break;
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}
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}
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if (names != namebuf)
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nis_freenames (names);
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return res;
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}
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