1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2002 Networks Associates Technology, Inc.
5 * All rights reserved.
6 *
7 * This software was developed for the FreeBSD Project by ThinkSec AS and
8 * NAI Labs, the Security Research Division of Network Associates, Inc.
9 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
10 * DARPA CHATS research program.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. The name of the author may not be used to endorse or promote
21 *    products derived from this software without specific prior written
22 *    permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD$
37 */
38
39#include <sys/param.h>
40
41#include <err.h>
42#include <errno.h>
43#include <stdlib.h>
44#include <string.h>
45#include <unistd.h>
46
47#include <rpcsvc/ypclnt.h>
48
49#include "ypclnt.h"
50
51int
52ypclnt_connect(ypclnt_t *ypclnt)
53{
54	int r;
55
56	/* get default domain name unless specified */
57	if (ypclnt->domain == NULL) {
58		if ((ypclnt->domain = malloc(MAXHOSTNAMELEN)) == NULL) {
59			ypclnt_error(ypclnt, __func__,
60			    "%s", strerror(errno));
61			return (-1);
62		}
63		if (getdomainname(ypclnt->domain, MAXHOSTNAMELEN) != 0) {
64			ypclnt_error(ypclnt, __func__,
65			    "can't get NIS domain name");
66			return (-1);
67		}
68	}
69
70	/* map must be specified */
71	if (ypclnt->map == NULL) {
72		ypclnt_error(ypclnt, __func__,
73		    "caller must specify map name");
74		return (-1);
75	}
76
77	/* get master server for requested map unless specified */
78	if (ypclnt->server == NULL) {
79		r = yp_master(ypclnt->domain, ypclnt->map, &ypclnt->server);
80		if (r != 0) {
81			ypclnt_error(ypclnt, __func__,
82			    "can't get NIS server name: %s", yperr_string(r));
83			return (-1);
84		}
85	}
86
87	ypclnt_error(ypclnt, NULL, NULL);
88	return (0);
89}
90