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1/*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7 * Reserved. This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.1 (the "License"). You may not use this file
10 * except in compliance with the License. Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
19 * License for the specific language governing rights and limitations
20 * under the License.
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24/*
25 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
26 * All rights reserved.
27 *
28 * Redistribution and use in source and binary forms, with or without
29 * modification, are permitted provided that the following conditions
30 * are met:
31 * 1. Redistributions of source code must retain the above copyright
32 * notice, this list of conditions and the following disclaimer.
33 * 2. Redistributions in binary form must reproduce the above copyright
34 * notice, this list of conditions and the following disclaimer in the
35 * documentation and/or other materials provided with the distribution.
36 * 3. All advertising materials mentioning features or use of this software
37 * must display the following acknowledgement:
38 * This product includes software developed by Theo de Raadt.
39 * 4. The name of the author may not be used to endorse or promote products
40 * derived from this software without specific prior written permission.
41 *
42 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
43 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
44 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
46 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * SUCH DAMAGE.
53 */
54
55#if defined(LIBC_SCCS) && !defined(lint)
56static char *rcsid = "$OpenBSD: yp_master.c,v 1.5 1996/12/03 08:20:05 deraadt Exp $";
57#endif /* LIBC_SCCS and not lint */
58
59#include <sys/param.h>
60#include <sys/types.h>
61#include <sys/socket.h>
62#include <sys/file.h>
63#include <sys/uio.h>
64#include <errno.h>
65#include <stdio.h>
66#include <stdlib.h>
67#include <string.h>
68#include <unistd.h>
69#include <rpc/rpc.h>
70#include <rpc/xdr.h>
71#include <rpcsvc/yp.h>
72#include <rpcsvc/ypclnt.h>
73#include "ypinternal.h"
74
75int
76yp_master(indomain, inmap, outname)
77 const char *indomain;
78 const char *inmap;
79 char **outname;
80{
81 struct dom_binding *ysd;
82 struct ypresp_master yprm;
83 struct ypreq_nokey yprnk;
84 struct timeval tv;
85 int tries = 0, r;
86 static int proto = YP_BIND_UDP;
87
88 if (indomain == NULL || *indomain == '\0' ||
89 strlen(indomain) > YPMAXDOMAIN || inmap == NULL ||
90 *inmap == '\0' || strlen(inmap) > YPMAXMAP || outname == NULL)
91 return YPERR_BADARGS;
92
93again:
94 if (_yp_dobind(indomain, &ysd) != 0)
95 return YPERR_DOMAIN;
96
97 tv.tv_sec = _yplib_timeout;
98 tv.tv_usec = 0;
99
100 yprnk.domain = (char *)indomain;
101 yprnk.map = (char *)inmap;
102
103 (void)memset(&yprm, 0, sizeof yprm);
104
105 r = clnt_call(ysd->dom_client, YPPROC_MASTER, (xdrproc_t)xdr_ypreq_nokey, &yprnk, (xdrproc_t)xdr_ypresp_master, &yprm, tv);
106 if (r != RPC_SUCCESS)
107 {
108 if (tries++) clnt_perror(ysd->dom_client, "yp_master: clnt_call");
109
110 if (proto == YP_BIND_UDP) proto = YP_BIND_TCP;
111 else proto = YP_BIND_UDP;
112 ysd->dom_vers = proto;
113
114 goto again;
115 }
116
117 if (!(r = ypprot_err(yprm.stat))) {
118 if ((*outname = strdup(yprm.peer)) == NULL)
119 r = YPERR_RESRC;
120 }
121 xdr_free((xdrproc_t)xdr_ypresp_master, (char *) &yprm);
122 _yp_unbind(ysd);
123 return r;
124}