/*      $NetBSD: ypmatch.c,v 1.21 2012/03/02 18:57:27 matt Exp $        */

/*
 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca>
 * 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/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: ypmatch.c,v 1.21 2012/03/02 18:57:27 matt Exp $");
#endif

#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>

#include "ypalias_init.h"

static void     usage(void) __attribute__((__noreturn__));

int
main(int argc, char *argv[])
{
        char *domainname, *b_retry_cnt;
        char *inkey, *outbuf;
        const char *inmap;
        int outbuflen, key, null, notrans;
        int c, r, len;
        size_t i;
        int rval;
        const struct ypalias *ypaliases;

        setprogname(*argv);
        domainname = b_retry_cnt = NULL;
        notrans = key = null = 0;
        ypaliases = ypalias_init();
        while ((c = getopt(argc, argv, "bd:ktxz")) != -1) {
                switch (c) {
                case 'x':
                        for(i = 0; ypaliases[i].alias; i++)
                                printf("Use \"%s\" for \"%s\"\n",
                                        ypaliases[i].alias,
                                        ypaliases[i].name);
                        return 0;

                case 'b':
                        b_retry_cnt = optarg;
                        break;

                case 'd':
                        domainname = optarg;
                        break;

                case 't':
                        notrans++;
                        break;

                case 'k':
                        key++;
                        break;

                case 'z':
                        null++;
                        break;

                default:
                        usage();
                }
        }

        argc -= optind;
        argv += optind;

        if (argc < 2)
                usage();

        if (b_retry_cnt != NULL) {
                char *s;
                unsigned long l;

                l = strtoul(b_retry_cnt, &s, 10);
                if (*s != '\0' || l > 0xffff) usage();
                yp_setbindtries((int)l);
        }

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

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

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

                len = strlen(inkey);
                if (null)
                        len++;
                r = yp_match(domainname, inmap, inkey, len,
                    &outbuf, &outbuflen);
                switch (r) {
                case 0:
                        if (key)
                                printf("%s: ", inkey);
                        fwrite(outbuf, outbuflen, 1, stdout);
                        putc('\n', stdout);
                        break;

                case YPERR_YPBIND:
                        errx(1, "not running ypbind");

                default:
                        warnx("can't match key %s in map %s.  Reason: %s",
                            inkey, inmap, yperr_string(r));
                        rval = 1;
                        break;
                }
        }

        return rval;
}

static void
usage(void)
{

        (void)fprintf(stderr, "Usage: %s [-ktz] [-b <num-retry>] "
            "[-d <domainname>] <key> ... <mapname>\n", getprogname());
        (void)fprintf(stderr, "       %s -x\n", getprogname());
        exit(1);
}