1/*
2 * Copyright (c) 1995, 1996
3 *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36#include <errno.h>
37#include <stdlib.h>
38#include <string.h>
39#include <time.h>
40#include <unistd.h>
41#include <rpcsvc/ypxfrd.h>
42#include <rpcsvc/yp.h>
43#include <rpc/rpc.h>
44#include <sys/uio.h>
45#include <sys/fcntl.h>
46#include <sys/stat.h>
47#include <sys/types.h>
48#include "ypxfr_extern.h"
49
50static int fp = 0;
51
52static bool_t
53xdr_my_xfr(register XDR *xdrs, xfr *objp)
54{
55	while (1) {
56		if (!xdr_xfr(xdrs, objp))
57			return(FALSE);
58		if (objp->ok == TRUE) {
59			if (write(fp, objp->xfr_u.xfrblock_buf.xfrblock_buf_val,
60			    objp->xfr_u.xfrblock_buf.xfrblock_buf_len) == -1) {
61				yp_error("write failed: %s", strerror(errno));
62				return(FALSE);
63			}
64		}
65		xdr_free((xdrproc_t)xdr_xfr, (char *)objp);
66		if (objp->ok == FALSE) {
67			switch (objp->xfr_u.xfrstat) {
68			case(XFR_DONE):
69				return(TRUE);
70				break;
71			case(XFR_READ_ERR):
72				yp_error("got read error from rpc.ypxfrd");
73				return(FALSE);
74				break;
75			case(XFR_ACCESS):
76				yp_error("rpc.ypxfrd couldn't access the map");
77				return(FALSE);
78				break;
79			case(XFR_DENIED):
80				yp_error("access to map denied by rpc.ypxfrd");
81				return(FALSE);
82				break;
83			case(XFR_DB_TYPE_MISMATCH):
84				yp_error("client/server DB type mismatch");
85				return(FALSE);
86				break;
87			case(XFR_DB_ENDIAN_MISMATCH):
88				yp_error("client/server byte order mismatch");
89				return(FALSE);
90				break;
91			default:
92				yp_error("got unknown status from rpc.ypxfrd");
93				return(FALSE);
94				break;
95			}
96		}
97	}
98}
99
100#define PERM_SECURE (S_IRUSR|S_IWUSR)
101
102int
103ypxfrd_get_map(char *host, char *map, char *domain, char *tmpname)
104{
105	CLIENT *clnt;
106	struct ypxfr_mapname req;
107	struct xfr resp;
108	struct timeval timeout = { 0, 25 };
109	int status = 0;
110
111	req.xfrmap = map;
112	req.xfrdomain = domain;
113	req.xfrmap_filename = "";
114	req.xfr_db_type = XFR_DB_BSD_HASH;	/*
115	req.xfr_byte_order = XFR_ENDIAN_ANY;	 * Berkeley DB isn't
116						 * byte-order sensitive.
117						 */
118
119	bzero((char *)&resp, sizeof(resp));
120
121	if ((clnt = clnt_create(host, YPXFRD_FREEBSD_PROG,
122				YPXFRD_FREEBSD_VERS, "tcp")) == NULL) {
123		return(1);
124	}
125
126	if ((fp = open(tmpname, O_RDWR|O_CREAT, PERM_SECURE)) == -1) {
127		clnt_destroy(clnt);
128		yp_error("couldn't open %s: %s", tmpname, strerror(errno));
129		return(1);
130	}
131
132	if (clnt_call(clnt,YPXFRD_GETMAP,
133			(xdrproc_t)xdr_ypxfr_mapname, (char *)&req,
134			(xdrproc_t)xdr_my_xfr, (char *)&resp,
135			timeout) != RPC_SUCCESS) {
136		yp_error("%s", clnt_sperror(clnt,"call to rpc.ypxfrd failed"));
137		status++;
138		unlink(tmpname);
139	}
140
141	clnt_destroy(clnt);
142	close(fp);
143	return(status);
144}
145