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/* Copyright (C) 1997 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <string.h>
#include <rpcsvc/nis.h>
#include <rpcsvc/nislib.h>
#include "nis_intern.h"
nis_result *
nis_lookup (const_nis_name name, const u_long flags)
{
nis_result *res;
struct ns_request req;
nis_name *names;
nis_error status;
int is_link = 1; /* We should go at least once in the while loop */
int count_links = 0; /* We will follow only 16 links in the deep */
int i;
res = calloc (1, sizeof (nis_result));
if (flags & EXPAND_NAME)
{
names = __nis_expandname (name);
if (names == NULL)
{
res->status = NIS_NAMEUNREACHABLE;
return res;
}
i = 0;
while (names[i] != NULL && (i == 0 || res->status > 1))
{
req.ns_name = names[i];
while (is_link)
{
req.ns_object.ns_object_len = 0;
req.ns_object.ns_object_val = NULL;
memset (res, '\0', sizeof (nis_result));
if ((status = __do_niscall (req.ns_name, NIS_LOOKUP,
(xdrproc_t) xdr_ns_request,
(caddr_t) & req,
(xdrproc_t) xdr_nis_result,
(caddr_t) res, flags)) != RPC_SUCCESS)
{
res->status = status;
nis_freenames (names);
return res;
}
if ((res->status == NIS_SUCCESS || res->status == NIS_S_SUCCESS)
&& (res->objects.objects_len > 0 &&
res->objects.objects_val->zo_data.zo_type == LINK_OBJ))
is_link = 1;
else
is_link = 0;
if (is_link)
{
if ((flags & FOLLOW_LINKS) == FOLLOW_LINKS)
{
if (count_links == 16)
{
res->status = NIS_LINKNAMEERROR;
return res;
}
else
++count_links;
req.ns_name = res->objects.objects_val->LI_data.li_name;
}
else
{
res->status = NIS_NOTSEARCHABLE;
return res;
}
}
}
++i;
if (res->status == NIS_NOT_ME)
res->status = NIS_NOSUCHNAME;
}
nis_freenames (names);
}
else
{
req.ns_name = (char *)name;
while (is_link)
{
req.ns_object.ns_object_len = 0;
req.ns_object.ns_object_val = NULL;
memset (res, '\0', sizeof (nis_result));
if ((status = __do_niscall (req.ns_name, NIS_LOOKUP,
(xdrproc_t) xdr_ns_request,
(caddr_t) &req,
(xdrproc_t) xdr_nis_result,
(caddr_t) res, flags)) != RPC_SUCCESS)
{
res->status = status;
return res;
}
if ((res->status == NIS_SUCCESS || res->status == NIS_S_SUCCESS) &&
(res->objects.objects_len > 0 &&
res->objects.objects_val->zo_data.zo_type == LINK_OBJ))
is_link = 1;
else
is_link = 0;
if (is_link)
{
if ((flags & FOLLOW_LINKS) == FOLLOW_LINKS)
{
if (count_links == 16)
{
res->status = NIS_LINKNAMEERROR;
return res;
}
else
++count_links;
req.ns_name = res->objects.objects_val->LI_data.li_name;
}
else
{
res->status = NIS_NOTSEARCHABLE;
return res;
}
}
}
}
return res;
}
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