/*      $OpenBSD: ypmatch.c,v 1.16 2015/02/08 23:40:35 deraadt Exp $ */
/*      $NetBSD: ypmatch.c,v 1.8 1996/05/07 01:24:52 jtc Exp $  */

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * 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/param.h>
#include <sys/types.h>
#include <sys/socket.h>

#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

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

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

static void
usage(void)
{
        fprintf(stderr, "%s\n%s\n",
            "usage: ypmatch [-kt] [-d domainname] key ... mapname",
            "       ypmatch -x");
        exit(1);
}

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

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

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

        if (domainname == NULL)
                yp_get_default_domain(&domainname);

        inmap = argv[argc-1];
        if (notrans == 0) {
                for (i = 0; i < nitems(ypaliases); 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:
                        errx(1, "not running ypbind");
                default:
                        errx(1, "can't match key %s in map %s. reason: %s",
                            inkey, inmap, yperr_string(r));
                        rval = 1;
                        break;
                }
        }
        exit(rval);
}