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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) | |
56 | static 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 | ||
75 | int | |
76 | yp_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 | ||
93 | again: | |
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 | } |