lib/libypclnt/ypclnt_connect.c

   1 /*-
   2  * Copyright (c) 2002 Networks Associates Technology, Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed for the FreeBSD Project by ThinkSec AS and
   6  * NAI Labs, the Security Research Division of Network Associates, Inc.
   7  * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
   8  * DARPA CHATS research program.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of the author may not be used to endorse or promote
  19  *    products derived from this software without specific prior written
  20  *    permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $FreeBSD: src/lib/libypclnt/ypclnt_connect.c,v 1.2 2006/07/28 21:34:37 stefanf Exp $
  35  */
  36
  37 #include <sys/param.h>
  38
  39 #include <err.h>
  40 #include <errno.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44
  45 #include <rpcsvc/ypclnt.h>
  46
  47 #include "ypclnt.h"
  48
  49 int
  50 ypclnt_connect(ypclnt_t *ypclnt)
  51 {
  52         int r;
  53
  54         /* get default domain name unless specified */
  55         if (ypclnt->domain == NULL) {
  56                 if ((ypclnt->domain = malloc(MAXHOSTNAMELEN)) == NULL) {
  57                         ypclnt_error(ypclnt, __func__,
  58                             "%s", strerror(errno));
  59                         return (-1);
  60                 }
  61                 if (getdomainname(ypclnt->domain, MAXHOSTNAMELEN) != 0) {
  62                         ypclnt_error(ypclnt, __func__,
  63                             "can't get NIS domain name");
  64                         return (-1);
  65                 }
  66         }
  67
  68         /* map must be specified */
  69         if (ypclnt->map == NULL) {
  70                 ypclnt_error(ypclnt, __func__,
  71                     "caller must specify map name");
  72                 return (-1);
  73         }
  74
  75         /* get master server for requested map unless specified */
  76         if (ypclnt->server == NULL) {
  77                 r = yp_master(ypclnt->domain, ypclnt->map, &ypclnt->server);
  78                 if (r != 0) {
  79                         ypclnt_error(ypclnt, __func__,
  80                             "can't get NIS server name: %s", yperr_string(r));
  81                         return (-1);
  82                 }
  83         }
  84
  85         ypclnt_error(ypclnt, NULL, NULL);
  86         return (0);
  87 }