1 /* $OpenBSD: yppoll.c,v 1.16 2024/08/27 06:03:20 florian Exp $ */ 2 /* $NetBSD: yppoll.c,v 1.5 1996/05/13 02:46:36 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@openbsd.org> 6 * Copyright (c) 1992, 1993 John Brezak 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote 18 * products derived from this software without specific prior written 19 * permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/types.h> 35 #include <sys/socket.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <time.h> 39 #include <netdb.h> 40 #include <unistd.h> 41 #include <string.h> 42 #include <netinet/in.h> 43 #include <arpa/inet.h> 44 45 #include <rpc/rpc.h> 46 #include <rpc/xdr.h> 47 #include <rpcsvc/yp_prot.h> 48 #include <rpcsvc/ypclnt.h> 49 50 static void 51 usage(void) 52 { 53 fprintf(stderr, "usage: yppoll [-d domain] [-h host] mapname\n"); 54 exit(1); 55 } 56 57 static int 58 get_remote_info(char *indomain, char *inmap, char *server, int *outorder, 59 char **outname) 60 { 61 struct ypresp_order ypro; 62 struct ypresp_master yprm; 63 struct ypreq_nokey yprnk; 64 struct timeval tv; 65 struct sockaddr_in rsrv_sin; 66 int rsrv_sock; 67 CLIENT *client; 68 struct addrinfo hints, *res; 69 int r; 70 71 bzero((char *)&rsrv_sin, sizeof rsrv_sin); 72 rsrv_sin.sin_len = sizeof rsrv_sin; 73 rsrv_sin.sin_family = AF_INET; 74 rsrv_sock = RPC_ANYSOCK; 75 76 memset(&hints, 0, sizeof(hints)); 77 hints.ai_family = AF_INET; 78 79 if (getaddrinfo(server, NULL, &hints, &res) != 0) { 80 fprintf(stderr, "unknown host %s\n", server); 81 exit(1); 82 } 83 rsrv_sin.sin_addr = ((struct sockaddr_in *)res->ai_addr)->sin_addr; 84 freeaddrinfo(res); 85 86 tv.tv_sec = 10; 87 tv.tv_usec = 0; 88 89 client = clntudp_create(&rsrv_sin, YPPROG, YPVERS, tv, &rsrv_sock); 90 if (client == NULL) { 91 fprintf(stderr, "clntudp_create: no contact with host %s.\n", 92 server); 93 exit(1); 94 } 95 96 yprnk.domain = indomain; 97 yprnk.map = inmap; 98 99 bzero((char *)(char *)&ypro, sizeof ypro); 100 101 r = clnt_call(client, YPPROC_ORDER, xdr_ypreq_nokey, &yprnk, 102 xdr_ypresp_order, &ypro, tv); 103 if (r != RPC_SUCCESS) 104 clnt_perror(client, "yp_order: clnt_call"); 105 106 *outorder = ypro.ordernum; 107 xdr_free(xdr_ypresp_order, (char *)&ypro); 108 109 r = ypprot_err(ypro.status); 110 if (r == RPC_SUCCESS) { 111 bzero((char *)&yprm, sizeof yprm); 112 113 r = clnt_call(client, YPPROC_MASTER, xdr_ypreq_nokey, 114 &yprnk, xdr_ypresp_master, &yprm, tv); 115 if (r != RPC_SUCCESS) 116 clnt_perror(client, "yp_master: clnt_call"); 117 r = ypprot_err(yprm.status); 118 if (r==0) 119 *outname = (char *)strdup(yprm.master); 120 xdr_free(xdr_ypresp_master, (char *)&yprm); 121 } 122 clnt_destroy(client); 123 return r; 124 } 125 126 int 127 main(int argc, char *argv[]) 128 { 129 char *domainname, *hostname = NULL, *inmap, *master; 130 extern char *optarg; 131 extern int optind; 132 int order, c, r; 133 time_t torder; 134 135 yp_get_default_domain(&domainname); 136 137 while ((c=getopt(argc, argv, "h:d:")) != -1) 138 switch (c) { 139 case 'd': 140 domainname = optarg; 141 break; 142 case 'h': 143 hostname = optarg; 144 break; 145 default: 146 usage(); 147 /*NOTREACHED*/ 148 } 149 150 if (optind + 1 != argc ) 151 usage(); 152 inmap = argv[optind]; 153 154 if (hostname != NULL) { 155 r = get_remote_info(domainname, inmap, hostname, 156 &order, &master); 157 } else { 158 r = yp_order(domainname, inmap, &order); 159 if (r == 0) 160 r = yp_master(domainname, inmap, &master); 161 } 162 163 if (r != 0) { 164 fprintf(stderr, "No such map %s. Reason: %s\n", 165 inmap, yperr_string(r)); 166 exit(1); 167 } 168 169 torder = order; 170 printf("Map %s has order number %lld. %s", inmap, 171 (long long)order, ctime(&torder)); 172 printf("The master server is %s.\n", master); 173 exit(0); 174 } 175