1 /* $OpenBSD: ypset.c,v 1.20 2015/01/16 06:40:23 deraadt Exp $ */ 2 /* $NetBSD: ypset.c,v 1.8 1996/05/13 02:46:33 thorpej Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 6 * 7 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com> 8 * All rights reserved. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/types.h> 37 #include <sys/socket.h> 38 39 #include <err.h> 40 #include <netdb.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 #include <rpc/rpc.h> 47 #include <rpc/xdr.h> 48 #include <rpcsvc/yp.h> 49 #include <rpcsvc/ypclnt.h> 50 #include <arpa/inet.h> 51 52 static void 53 usage(void) 54 { 55 fprintf(stderr, "usage: ypset [-d domain] [-h host] server\n"); 56 exit(1); 57 } 58 59 static int 60 bind_tohost(struct sockaddr_in *sin, char *dom, char *server) 61 { 62 struct ypbind_setdom ypsd; 63 struct in_addr iaddr; 64 struct hostent *hp; 65 struct timeval tv; 66 CLIENT *client; 67 int sock, port, r; 68 69 port = getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP); 70 if (port == 0) 71 errx(1, "%s not running ypserv", server); 72 port = htons(port); 73 74 memset(&ypsd, 0, sizeof ypsd); 75 76 if (inet_aton(server, &iaddr) == 0) { 77 hp = gethostbyname(server); 78 if (hp == NULL) 79 errx(1, "can't find address for %s", server); 80 memmove(&iaddr.s_addr, hp->h_addr, sizeof(iaddr.s_addr)); 81 } 82 ypsd.ypsetdom_domain = dom; 83 bcopy(&iaddr.s_addr, &ypsd.ypsetdom_binding.ypbind_binding_addr, 84 sizeof(ypsd.ypsetdom_binding.ypbind_binding_addr)); 85 bcopy(&port, &ypsd.ypsetdom_binding.ypbind_binding_port, 86 sizeof(ypsd.ypsetdom_binding.ypbind_binding_port)); 87 ypsd.ypsetdom_vers = YPVERS; 88 89 tv.tv_sec = 15; 90 tv.tv_usec = 0; 91 sock = RPC_ANYSOCK; 92 client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock); 93 if (client == NULL) { 94 warnx("can't yp_bind, reason: %s", yperr_string(YPERR_YPBIND)); 95 return (YPERR_YPBIND); 96 } 97 client->cl_auth = authunix_create_default(); 98 99 r = clnt_call(client, YPBINDPROC_SETDOM, 100 (xdrproc_t)xdr_ypbind_setdom, &ypsd, 101 (xdrproc_t)xdr_void, NULL, tv); 102 if (r) { 103 warnx("cannot ypset for domain %s on host %s: %s" 104 " - make sure ypbind was started with -ypset or -ypsetme", dom, 105 server, clnt_sperrno(r)); 106 clnt_destroy(client); 107 return (YPERR_YPBIND); 108 } 109 clnt_destroy(client); 110 return (0); 111 } 112 113 int 114 main(int argc, char *argv[]) 115 { 116 struct sockaddr_in sin; 117 struct hostent *hent; 118 char *domainname; 119 int c; 120 121 yp_get_default_domain(&domainname); 122 123 bzero(&sin, sizeof sin); 124 sin.sin_family = AF_INET; 125 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 126 127 while ((c = getopt(argc, argv, "h:d:")) != -1) 128 switch (c) { 129 case 'd': 130 domainname = optarg; 131 break; 132 case 'h': 133 if (inet_aton(optarg, &sin.sin_addr) == 0) { 134 hent = gethostbyname(optarg); 135 if (hent == NULL) 136 errx(1, "host %s unknown\n", optarg); 137 bcopy(hent->h_addr, &sin.sin_addr, 138 sizeof(sin.sin_addr)); 139 } 140 break; 141 default: 142 usage(); 143 } 144 145 if (optind + 1 != argc) 146 usage(); 147 148 if (bind_tohost(&sin, domainname, argv[optind])) 149 exit(1); 150 exit(0); 151 } 152