GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/ypwhich/ypwhich.c Lines: 0 112 0.0 %
Date: 2016-12-06 Branches: 0 59 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: ypwhich.c,v 1.23 2015/02/08 23:40:35 deraadt Exp $	*/
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/*	$NetBSD: ypwhich.c,v 1.6 1996/05/13 02:43:48 thorpej Exp $	*/
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/*
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 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
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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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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.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 <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.h>
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#include <rpcsvc/ypclnt.h>
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#include "yplib_host.h"
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struct ypalias {
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	char *alias, *name;
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} ypaliases[] = {
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	{ "passwd", "passwd.byname" },
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	{ "group", "group.byname" },
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	{ "networks", "networks.byaddr" },
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	{ "hosts", "hosts.byaddr" },
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	{ "protocols", "protocols.bynumber" },
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	{ "services", "services.byname" },
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	{ "aliases", "mail.aliases" },
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	{ "ethers", "ethers.byname" },
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};
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int	bind_host(char *dom, struct sockaddr_in *sin);
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static void
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usage(void)
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{
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	fprintf(stderr,
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	    "usage: ypwhich [-t] [-d domain] [[-h] host]\n"
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	    "       ypwhich [-t] [-d domain] [-h host] -m [mname]\n"
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	    "       ypwhich -x\n");
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	exit(1);
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}
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/*
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 * Like yp_bind except can query a specific host
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 */
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int
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bind_host(char *dom, struct sockaddr_in *sin)
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{
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	struct hostent *hent = NULL;
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	struct ypbind_resp ypbr;
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	struct in_addr ss_addr;
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	struct timeval tv;
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	CLIENT *client;
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	int sock, r;
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	sock = RPC_ANYSOCK;
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	tv.tv_sec = 15;
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	tv.tv_usec = 0;
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	client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
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	if (client == NULL) {
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		fprintf(stderr, "ypwhich: host is not bound to a ypmaster\n");
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		return YPERR_YPBIND;
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	}
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	tv.tv_sec = 5;
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	tv.tv_usec = 0;
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	r = clnt_call(client, YPBINDPROC_DOMAIN,
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	    xdr_domainname, &dom, xdr_ypbind_resp, &ypbr, tv);
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	if (r != RPC_SUCCESS) {
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		fprintf(stderr, "can't clnt_call: %s\n",
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		    yperr_string(YPERR_YPBIND));
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		clnt_destroy(client);
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		return YPERR_YPBIND;
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	} else {
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		if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
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			fprintf(stderr, "can't yp_bind: Reason: %s\n",
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			    yperr_string(ypbr.ypbind_status));
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			clnt_destroy(client);
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			return r;
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		}
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	}
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	clnt_destroy(client);
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	memmove(&ss_addr.s_addr, &ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr,
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	    sizeof (ss_addr));
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	hent = gethostbyaddr((char *)&ss_addr.s_addr, sizeof(ss_addr.s_addr),
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	    AF_INET);
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	if (hent != NULL)
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		printf("%s\n", hent->h_name);
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	else
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		printf("%s\n", inet_ntoa(ss_addr));
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	return 0;
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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 *domain, *master, *map = NULL, *host = NULL;
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	int notrans = 0, mode = 0, c, r, i;
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	struct ypmaplist *ypml, *y;
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	struct sockaddr_in sin;
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	struct hostent *hent;
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	CLIENT *client = NULL;
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	yp_get_default_domain(&domain);
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	if (domain == NULL)
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		errx(1, "YP domain name not set");
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	while ((c = getopt(argc, argv, "xd:h:mt")) != -1)
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		switch (c) {
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		case 'x':
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			for (i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
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				printf("Use \"%s\" for \"%s\"\n",
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				    ypaliases[i].alias, ypaliases[i].name);
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			exit(0);
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		case 'h':
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			host = optarg;
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			break;
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		case 'd':
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			domain = optarg;
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			break;
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		case 't':
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			notrans = 1;
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			break;
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		case 'm':
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			mode = 1;
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			break;
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		default:
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			usage();
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		}
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	argc -= optind;
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	argv += optind;
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	if (mode == 0) {
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		switch (argc) {
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		case 0:
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			memset(&sin, 0, sizeof sin);
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			sin.sin_family = AF_INET;
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			sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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			if (bind_host(domain, &sin))
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				exit(1);
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			break;
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		case 1:
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			bzero(&sin, sizeof sin);
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			sin.sin_family = AF_INET;
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			if (inet_aton(argv[0], &sin.sin_addr) == 0) {
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				hent = gethostbyname(argv[0]);
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				if (!hent) {
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					fprintf(stderr, "ypwhich: host %s unknown\n",
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					    argv[0]);
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					exit(1);
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				}
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				bcopy(hent->h_addr, &sin.sin_addr,
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				    sizeof sin.sin_addr);
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			}
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			if (bind_host(domain, &sin))
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				exit(1);
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			break;
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		default:
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			usage();
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		}
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		exit(0);
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	}
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	if (argc > 1)
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		usage();
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	if (host != NULL)
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		client = yp_bind_host(host, YPPROG, YPVERS, 0, 1);
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	if (argv[0]) {
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		map = argv[0];
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		for (i=0; (!notrans) && i<sizeof ypaliases/sizeof ypaliases[0]; i++)
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			if (strcmp(map, ypaliases[i].alias) == 0)
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				map = ypaliases[i].name;
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		if (host != NULL)
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			r = yp_master_host(client, domain, map, &master);
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		else
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			r = yp_master(domain, map, &master);
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		switch (r) {
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		case 0:
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			printf("%s\n", master);
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			free(master);
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			break;
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		case YPERR_YPBIND:
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			fprintf(stderr, "ypwhich: not running ypbind\n");
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			exit(1);
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		default:
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			fprintf(stderr, "Can't find master for map %s. Reason: %s\n",
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			    map, yperr_string(r));
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			exit(1);
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		}
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		exit(0);
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	}
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	ypml = NULL;
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	if (host != NULL)
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		r = yp_maplist_host(client, domain, &ypml);
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	else
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		r = yp_maplist(domain, &ypml);
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	r = 0;
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	switch (r) {
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	case 0:
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		for (y = ypml; y; ) {
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			ypml = y;
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			if (host != NULL) {
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				r = yp_master_host(client,
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						   domain, ypml->map, &master);
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			} else {
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				r = yp_master(domain, ypml->map, &master);
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			}
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			switch (r) {
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			case 0:
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				printf("%s %s\n", ypml->map, master);
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				free(master);
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				break;
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			default:
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				fprintf(stderr,
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				    "YP: can't find the master of %s: Reason: %s\n",
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				    ypml->map, yperr_string(r));
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				break;
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			}
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			y = ypml->next;
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			free(ypml);
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		}
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		break;
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	case YPERR_YPBIND:
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		fprintf(stderr, "ypwhich: not running ypbind\n");
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		exit(1);
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	default:
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		fprintf(stderr, "Can't get map list for domain %s. Reason: %s\n",
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		    domain, yperr_string(r));
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		exit(1);
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	}
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	exit(0);
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}