ypxfr_getmap.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1995
5 *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: stable/11/libexec/ypxfr/ypxfr_getmap.c 330897 2018-03-14 03:19:51Z eadler $");
37
38#include <stdio.h>
39#include <time.h>
40#include <sys/types.h>
41#include <rpc/rpc.h>
42#include <rpc/xdr.h>
43#include <rpcsvc/yp.h>
44#include "ypxfr_extern.h"
45
46extern bool_t xdr_ypresp_all_seq(XDR *, unsigned long *);
47
48extern int (*ypresp_allfn)();
49extern void *ypresp_data;
50extern DB *specdbp;
51extern enum ypstat yp_errno;
52
53/*
54 * This is largely the same as yp_all() except we do the transfer
55 * from a specific server without the aid of ypbind(8). We need to
56 * be able to specify the source host explicitly since ypxfr may
57 * only transfer maps from the NIS master server for any given domain.
58 * However, if we use the libc version of yp_all(), we could end up
59 * talking to one of the slaves instead. We do need to dig into libc
60 * a little though, since it contains the magic XDR function we need.
61 */
62int
63ypxfr_get_map(char *map, char *domain, char *host,
64    int (*callback)(int, char *, int, char *, int, char*))
65{
66	CLIENT *clnt;
67	ypreq_nokey req;
68	unsigned long status;
69	struct timeval timeout;
70
71	timeout.tv_usec = 0;
72	timeout.tv_sec = 10;
73
74	/* YPPROC_ALL is a TCP service */
75	if ((clnt = clnt_create(host, YPPROG, YPVERS, "tcp")) == NULL) {
76		yp_error("%s", clnt_spcreateerror("failed to \
77create tcp handle"));
78		yp_errno = (enum ypstat)YPXFR_YPERR;
79		return(1);
80	}
81
82	req.domain = domain;
83	req.map = map;
84	ypresp_allfn = callback;
85	ypresp_data = NULL;
86
87	(void)clnt_call(clnt, YPPROC_ALL, (xdrproc_t)xdr_ypreq_nokey, &req,
88	    (xdrproc_t)xdr_ypresp_all_seq, &status, timeout);
89
90	clnt_destroy(clnt);
91
92	if (status == YP_NOMORE)
93		return(0);
94
95	if (status != YP_TRUE) {
96		yp_errno = (enum ypstat)YPXFR_YPERR;
97		return(1);
98	}
99
100	return(0);
101}
102