1 /* 2 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca> 3 * Copyright (c) 1992, 1993 John Brezak 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Theo de Raadt and 17 * John Brezak. 18 * 4. The name of the author may not be used to endorse or promote 19 * products derived from this software without specific prior written 20 * permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 26 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef lint 36 static char rcsid[] = "$Id: yppoll.c,v 1.4 1994/08/23 17:03:15 deraadt Exp $"; 37 #endif /* not lint */ 38 39 #include <sys/param.h> 40 #include <sys/types.h> 41 #include <sys/socket.h> 42 #include <stdio.h> 43 #include <time.h> 44 #include <netdb.h> 45 #include <unistd.h> 46 #include <string.h> 47 #include <netinet/in.h> 48 #include <arpa/inet.h> 49 50 #include <rpc/rpc.h> 51 #include <rpc/xdr.h> 52 #include <rpcsvc/yp_prot.h> 53 #include <rpcsvc/ypclnt.h> 54 55 void 56 usage() 57 { 58 fprintf(stderr, "Usage:\n"); 59 fprintf(stderr, "\typpoll [-h host] [-d domainname] mapname\n"); 60 exit(1); 61 } 62 63 int 64 get_remote_info(indomain, inmap, server, outorder, outname) 65 char *indomain; 66 char *inmap; 67 char *server; 68 int *outorder; 69 char **outname; 70 { 71 struct ypresp_order ypro; 72 struct ypresp_master yprm; 73 struct ypreq_nokey yprnk; 74 struct timeval tv; 75 int r; 76 struct sockaddr_in rsrv_sin; 77 int rsrv_sock; 78 CLIENT *client; 79 struct hostent *h; 80 81 bzero((char *)&rsrv_sin, sizeof rsrv_sin); 82 rsrv_sin.sin_len = sizeof rsrv_sin; 83 rsrv_sin.sin_family = AF_INET; 84 rsrv_sock = RPC_ANYSOCK; 85 86 h = gethostbyname(server); 87 if (h == NULL) { 88 if (inet_aton(server, &rsrv_sin.sin_addr) == 0) { 89 fprintf(stderr, "unknown host %s\n", server); 90 exit(1); 91 } 92 } else { 93 rsrv_sin.sin_addr.s_addr = *(u_long *)h->h_addr; 94 } 95 96 tv.tv_sec = 10; 97 tv.tv_usec = 0; 98 99 client = clntudp_create(&rsrv_sin, YPPROG, YPVERS, tv, &rsrv_sock); 100 if (client == NULL) { 101 fprintf(stderr, "clntudp_create: no contact with host %s.\n", 102 server); 103 exit(1); 104 } 105 106 yprnk.domain = indomain; 107 yprnk.map = inmap; 108 109 bzero((char *)(char *)&ypro, sizeof ypro); 110 111 r = clnt_call(client, YPPROC_ORDER, xdr_ypreq_nokey, &yprnk, 112 xdr_ypresp_order, &ypro, tv); 113 if (r != RPC_SUCCESS) 114 clnt_perror(client, "yp_order: clnt_call"); 115 116 *outorder = ypro.ordernum; 117 xdr_free(xdr_ypresp_order, (char *)&ypro); 118 119 r = ypprot_err(ypro.status); 120 if (r == RPC_SUCCESS) { 121 bzero((char *)&yprm, sizeof yprm); 122 123 r = clnt_call(client, YPPROC_MASTER, xdr_ypreq_nokey, 124 &yprnk, xdr_ypresp_master, &yprm, tv); 125 if (r != RPC_SUCCESS) 126 clnt_perror(client, "yp_master: clnt_call"); 127 r = ypprot_err(yprm.status); 128 if (r==0) 129 *outname = (char *)strdup(yprm.master); 130 xdr_free(xdr_ypresp_master, (char *)&yprm); 131 } 132 clnt_destroy(client); 133 return r; 134 } 135 136 int 137 main(argc, argv) 138 int argc; 139 char **argv; 140 { 141 char *domainname; 142 char *hostname = NULL; 143 char *inmap, *master; 144 int order; 145 extern char *optarg; 146 extern int optind; 147 int c, r; 148 149 yp_get_default_domain(&domainname); 150 151 while ((c=getopt(argc, argv, "h:d:?")) != -1) 152 switch (c) { 153 case 'd': 154 domainname = optarg; 155 break; 156 case 'h': 157 hostname = optarg; 158 break; 159 default: 160 usage(); 161 /*NOTREACHED*/ 162 } 163 164 if (optind + 1 != argc ) 165 usage(); 166 inmap = argv[optind]; 167 168 if (hostname != NULL) { 169 r = get_remote_info(domainname, inmap, hostname, 170 &order, &master); 171 } else { 172 r = yp_order(domainname, inmap, &order); 173 if (r == 0) 174 r = yp_master(domainname, inmap, &master); 175 } 176 177 if (r != 0) { 178 fprintf(stderr, "No such map %s. Reason: %s\n", 179 inmap, yperr_string(r)); 180 exit(1); 181 } 182 183 printf("Map %s has order number %d. %s", inmap, order, 184 ctime((time_t *)&order)); 185 printf("The master server is %s.\n", master); 186 exit(0); 187 } 188