diff options
Diffstat (limited to 'nis/nis_lookup.c')
| -rw-r--r-- | nis/nis_lookup.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/nis/nis_lookup.c b/nis/nis_lookup.c new file mode 100644 index 0000000000..9173437bfa --- /dev/null +++ b/nis/nis_lookup.c @@ -0,0 +1,157 @@ +/* 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 (NULL, 0, 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 (NULL, 0, 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; +} |