174 lines
4.7 KiB
C
174 lines
4.7 KiB
C
/* $OpenBSD: yppoll.c,v 1.15 2015/01/16 06:40:22 deraadt Exp $ */
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/* $NetBSD: yppoll.c,v 1.5 1996/05/13 02:46:36 thorpej Exp $ */
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/*
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* Copyright (c) 1992, 1993 Theo de Raadt <deraadt@openbsd.org>
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* Copyright (c) 1992, 1993 John Brezak
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <ctype.h>
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#include <err.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <rpc/rpc.h>
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#include <rpc/xdr.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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static void
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usage(void)
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{
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fprintf(stderr, "usage: yppoll [-d domain] [-h host] mapname\n");
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exit(1);
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}
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static int
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get_remote_info(char *indomain, char *inmap, char *server, int *outorder,
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char **outname)
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{
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struct ypresp_order ypro;
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struct ypresp_master yprm;
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struct ypreq_nokey yprnk;
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struct timeval tv;
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struct sockaddr_in rsrv_sin;
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int rsrv_sock;
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CLIENT *client;
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struct hostent *h;
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int r;
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bzero((char *)&rsrv_sin, sizeof rsrv_sin);
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rsrv_sin.sin_len = sizeof rsrv_sin;
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rsrv_sin.sin_family = AF_INET;
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rsrv_sock = RPC_ANYSOCK;
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h = gethostbyname(server);
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if (h == NULL) {
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if (inet_aton(server, &rsrv_sin.sin_addr) == 0)
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errx(1, "unknown host %s.", server);
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} else
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rsrv_sin.sin_addr.s_addr = *(u_int32_t *)h->h_addr;
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tv.tv_sec = 10;
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tv.tv_usec = 0;
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client = clntudp_create(&rsrv_sin, YPPROG, YPVERS, tv, &rsrv_sock);
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if (client == NULL)
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errx(1, "clntudp_create: no contact with host %s.", server);
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yprnk.domain = indomain;
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yprnk.map = inmap;
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bzero((char *)(char *)&ypro, sizeof ypro);
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r = clnt_call(client, YPPROC_ORDER, (xdrproc_t)xdr_ypreq_nokey, &yprnk,
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(xdrproc_t)xdr_ypresp_order, &ypro, tv);
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if (r != RPC_SUCCESS)
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clnt_perror(client, "yp_order: clnt_call");
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*outorder = ypro.ordernum;
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xdr_free((xdrproc_t)xdr_ypresp_order, (char *)&ypro);
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r = ypprot_err(ypro.status);
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if (r == RPC_SUCCESS) {
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bzero((char *)&yprm, sizeof yprm);
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r = clnt_call(client, YPPROC_MASTER, (xdrproc_t)xdr_ypreq_nokey,
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&yprnk, (xdrproc_t)xdr_ypresp_master, &yprm, tv);
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if (r != RPC_SUCCESS)
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clnt_perror(client, "yp_master: clnt_call");
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r = ypprot_err(yprm.status);
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if (r == 0)
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*outname = (char *)strdup(yprm.master);
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xdr_free((xdrproc_t)xdr_ypresp_master, (char *)&yprm);
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}
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clnt_destroy(client);
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return (r);
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}
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int
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main(int argc, char *argv[])
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{
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char *domainname, *hostname = NULL, *inmap, *master;
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int order, c, r;
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time_t torder;
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yp_get_default_domain(&domainname);
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while ((c = getopt(argc, argv, "h:d:")) != -1)
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switch (c) {
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case 'd':
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domainname = optarg;
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break;
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case 'h':
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hostname = optarg;
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break;
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default:
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usage();
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/*NOTREACHED*/
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}
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if (optind + 1 != argc)
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usage();
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inmap = argv[optind];
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if (hostname != NULL) {
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r = get_remote_info(domainname, inmap, hostname,
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&order, &master);
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} else {
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r = yp_order(domainname, inmap, &order);
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if (r == 0)
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r = yp_master(domainname, inmap, &master);
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}
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if (r != 0)
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errx(1, "no such map %s: reason: %s",
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inmap, yperr_string(r));
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torder = order;
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printf("Map %s has order number %lld. %s", inmap,
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(long long)order, ctime(&torder));
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printf("The master server is %s.\n", master);
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exit(0);
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}
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