232 lines
6.6 KiB
C
232 lines
6.6 KiB
C
/* $NetBSD: yppoll.c,v 1.15 2011/08/30 17:06:22 plunky Exp $ */
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/*
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* Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca>
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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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*
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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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/*
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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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#ifndef lint
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__RCSID("$NetBSD: yppoll.c,v 1.15 2011/08/30 17:06:22 plunky Exp $");
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#endif /* not lint */
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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 <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <arpa/inet.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 CLIENT *mkclient(struct sockaddr_in *, unsigned long, unsigned long,
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int);
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static int get_remote_info(const char *, const char *, const char *, int *,
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char **, int);
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static void usage(void) __attribute__((__noreturn__));
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int
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main(int argc, char *argv[])
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{
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char *domainname;
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char *hostname = NULL;
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char *inmap, *master;
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int order;
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int c, r, tcp = 0;
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(void)yp_get_default_domain(&domainname);
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while ((c = getopt(argc, argv, "Th:d:")) != -1) {
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switch (c) {
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case 'T':
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tcp = 1;
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break;
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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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}
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if (domainname == NULL)
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errx(1, "YP domain name not set");
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argc -= optind;
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argv += optind;
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if (argc != 1)
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usage();
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inmap = argv[0];
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if (hostname != NULL)
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r = get_remote_info(domainname, inmap, hostname,
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&order, &master, tcp);
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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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(void)printf("Map %s has order number %d. %s", inmap, order,
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ctime((void *)&order));
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(void)printf("The master server is %s.\n", master);
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return 0;
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}
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static CLIENT *
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mkclient(struct sockaddr_in *sin, unsigned long prog, unsigned long vers,
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int tcp)
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{
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static struct timeval tv = { 10, 0 };
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int fd = RPC_ANYSOCK;
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if (tcp)
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return clnttcp_create(sin, prog, vers, &fd, 0, 0);
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else
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return clntudp_create(sin, prog, vers, tv, &fd);
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}
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static int
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get_remote_info(const char *indomain, const char *inmap, const char *server,
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int *outorder, char **outname, int tcp)
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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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int r;
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struct sockaddr_in rsrv_sin;
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CLIENT *client;
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struct hostent *h;
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(void)memset(&rsrv_sin, 0, 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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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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(void)memcpy(&rsrv_sin.sin_addr.s_addr, h->h_addr,
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(size_t)h->h_length);
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client = mkclient(&rsrv_sin, YPPROG, YPVERS, tcp);
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if (client == NULL)
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errx(1, "clnt%s_create: no contact with host %s.",
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tcp ? "tcp" : "udp", server);
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yprnk.domain = indomain;
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yprnk.map = inmap;
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(void)memset(&ypro, 0, sizeof(ypro));
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tv.tv_sec = 10;
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tv.tv_usec = 0;
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r = clnt_call(client, (unsigned int)YPPROC_ORDER, xdr_ypreq_nokey,
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&yprnk, 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, (void *)&ypro);
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r = ypprot_err(ypro.status);
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if (r == RPC_SUCCESS) {
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(void)memset(&yprm, 0, sizeof(yprm));
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r = clnt_call(client, (unsigned int)YPPROC_MASTER,
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xdr_ypreq_nokey, &yprnk, 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, (void *)&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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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"Usage: %s [-T] [-h host] [-d domainname] mapname\n",
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getprogname());
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exit(1);
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}
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