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 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/param.h> 33 #include <sys/types.h> 34 #include <sys/socket.h> 35 36 #include <err.h> 37 #include <netdb.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 #include <rpc/rpc.h> 44 #include <rpc/xdr.h> 45 #include <rpcsvc/yp.h> 46 #include <rpcsvc/ypclnt.h> 47 #include <arpa/inet.h> 48 49 static void 50 usage(void) 51 { 52 fprintf(stderr, "usage: ypset [-d domain] [-h host] server\n"); 53 exit(1); 54 } 55 56 static int 57 bind_tohost(struct sockaddr_in *sin, char *dom, char *server) 58 { 59 struct ypbind_setdom ypsd; 60 struct in_addr iaddr; 61 struct hostent *hp; 62 struct timeval tv; 63 CLIENT *client; 64 int sock, port, r; 65 66 port = getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP); 67 if (port == 0) 68 errx(1, "%s not running ypserv", server); 69 port = htons(port); 70 71 memset(&ypsd, 0, sizeof ypsd); 72 73 if (inet_aton(server, &iaddr) == 0) { 74 hp = gethostbyname(server); 75 if (hp == NULL) 76 errx(1, "can't find address for %s", server); 77 memmove(&iaddr.s_addr, hp->h_addr, sizeof(iaddr.s_addr)); 78 } 79 ypsd.ypsetdom_domain = dom; 80 bcopy(&iaddr.s_addr, &ypsd.ypsetdom_binding.ypbind_binding_addr, 81 sizeof(ypsd.ypsetdom_binding.ypbind_binding_addr)); 82 bcopy(&port, &ypsd.ypsetdom_binding.ypbind_binding_port, 83 sizeof(ypsd.ypsetdom_binding.ypbind_binding_port)); 84 ypsd.ypsetdom_vers = YPVERS; 85 86 tv.tv_sec = 15; 87 tv.tv_usec = 0; 88 sock = RPC_ANYSOCK; 89 client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock); 90 if (client == NULL) { 91 warnx("can't yp_bind, reason: %s", yperr_string(YPERR_YPBIND)); 92 return (YPERR_YPBIND); 93 } 94 client->cl_auth = authunix_create_default(); 95 96 r = clnt_call(client, YPBINDPROC_SETDOM, 97 (xdrproc_t)xdr_ypbind_setdom, &ypsd, 98 (xdrproc_t)xdr_void, NULL, tv); 99 if (r) { 100 warnx("cannot ypset for domain %s on host %s: %s" 101 " - make sure ypbind was started with -ypset or -ypsetme", dom, 102 server, clnt_sperrno(r)); 103 clnt_destroy(client); 104 return (YPERR_YPBIND); 105 } 106 clnt_destroy(client); 107 return (0); 108 } 109 110 int 111 main(int argc, char *argv[]) 112 { 113 struct sockaddr_in sin; 114 struct hostent *hent; 115 char *domainname; 116 int c; 117 118 yp_get_default_domain(&domainname); 119 120 bzero(&sin, sizeof sin); 121 sin.sin_family = AF_INET; 122 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 123 124 while ((c = getopt(argc, argv, "h:d:")) != -1) 125 switch (c) { 126 case 'd': 127 domainname = optarg; 128 break; 129 case 'h': 130 if (inet_aton(optarg, &sin.sin_addr) == 0) { 131 hent = gethostbyname(optarg); 132 if (hent == NULL) 133 errx(1, "host %s unknown\n", optarg); 134 bcopy(hent->h_addr, &sin.sin_addr, 135 sizeof(sin.sin_addr)); 136 } 137 break; 138 default: 139 usage(); 140 } 141 142 if (optind + 1 != argc) 143 usage(); 144 145 if (bind_tohost(&sin, domainname, argv[optind])) 146 exit(1); 147 exit(0); 148 } 149