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Replace <sys/param.h> with <limits.h> and other less dirty headers where
possible.  Annotate <sys/param.h> lines with their current reasons.  Switch
to PATH_MAX, NGROUPS_MAX, HOST_NAME_MAX+1, LOGIN_NAME_MAX, etc.  Change
MIN() and MAX() to local definitions of MINIMUM() and MAXIMUM() where
sensible to avoid pulling in the pollution.  These are the files confirmed
through binary verification.
ok guenther, millert, doug (helped with the verification protocol)

/*	$OpenBSD: ypmatch.c,v 1.15 2015/01/16 06:40:15 deraadt Exp $ */
/*	$NetBSD: ypmatch.c,v 1.8 1996/05/07 01:24:52 jtc Exp $	*/

/*
 * Copyright (c) 1992, 1993, 1996 Theo de Raadt <deraadt@theos.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>

#include <rpc/rpc.h>
#include <rpc/xdr.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>

void	usage(void);

struct ypalias {
	char *alias, *name;
} ypaliases[] = {
	{ "passwd", "passwd.byname" },
	{ "group", "group.byname" },
	{ "networks", "networks.byaddr" },
	{ "hosts", "hosts.byname" },
	{ "protocols", "protocols.bynumber" },
	{ "services", "services.byname" },
	{ "aliases", "mail.aliases" },
	{ "ethers", "ethers.byname" },
};

void
usage(void)
{
	fprintf(stderr,
	    "usage: ypmatch [-kt] [-d domain] key ... mapname\n"
	    "       ypmatch -x\n");
	fprintf(stderr,
	    "where\n"
	    "\tmapname may be either a mapname or a nickname for a map.\n"
	    "\t-k prints keys as well as values.\n"
	    "\t-t inhibits map nickname translation.\n"
	    "\t-x dumps the map nickname translation table.\n");
	exit(1);
}

int
main(int argc, char *argv[])
{
	char *domainname, *inkey, *inmap, *outbuf;
	extern char *optarg;
	extern int optind;
	int outbuflen, key, notrans, rval;
	int c, r, i;

	domainname = NULL;
	notrans = key = 0;
	while ((c=getopt(argc, argv, "xd:kt")) != -1)
		switch (c) {
		case 'x':
			for(i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
				printf("Use \"%s\" for \"%s\"\n",
					ypaliases[i].alias,
					ypaliases[i].name);
			exit(0);
		case 'd':
			domainname = optarg;
			break;
		case 't':
			notrans++;
			break;
		case 'k':
			key++;
			break;
		default:
			usage();
		}

	if ((argc-optind) < 2 )
		usage();

	if (!domainname) {
		yp_get_default_domain(&domainname);
	}

	inmap = argv[argc-1];
	if (!notrans) {
		for(i=0; i<sizeof ypaliases/sizeof ypaliases[0]; i++)
			if (strcmp(inmap, ypaliases[i].alias) == 0)
				inmap = ypaliases[i].name;
	}

	rval = 0;
	for(; optind < argc-1; optind++) {
		inkey = argv[optind];

		r = yp_match(domainname, inmap, inkey,
			strlen(inkey), &outbuf, &outbuflen);
		switch (r) {
		case 0:
			if (key)
				printf("%s: ", inkey);
			printf("%*.*s\n", outbuflen, outbuflen, outbuf);
			break;
		case YPERR_YPBIND:
			fprintf(stderr, "yp_match: not running ypbind\n");
			exit(1);
		default:
			fprintf(stderr, "Can't match key %s in map %s. Reason: %s\n",
			    inkey, inmap, yperr_string(r));
			rval = 1;
			break;
		}
	}
	exit(rval);
}