ypclnt_connect.c revision 94575 
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: head/lib/libypclnt/ypclnt_connect.c 94575 2002-04-13 06:20:02Z des $
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
49int
50ypclnt_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	YPCLNT_DEBUG("domain '%s'", ypclnt->domain);
68
69	/* map must be specified */
70	if (ypclnt->map == NULL) {
71		ypclnt_error(ypclnt, __func__,
72		    "caller must specify map name");
73		return (-1);
74	}
75	YPCLNT_DEBUG("map '%s'", ypclnt->map);
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	YPCLNT_DEBUG("server '%s'", ypclnt->server);
87
88	ypclnt_error(ypclnt, NULL, NULL);
89	return (0);
90}
91