libexec/ypxfr/ypxfrd_getmap.c

1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1995, 1996
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("$FreeBSD$");
37
38#include <errno.h>
39#include <stdlib.h>
40#include <string.h>
41#include <time.h>
42#include <unistd.h>
43#include <rpcsvc/ypxfrd.h>
44#include <rpcsvc/yp.h>
45#include <rpc/rpc.h>
46#include <sys/uio.h>
47#include <sys/fcntl.h>
48#include <sys/stat.h>
49#include <sys/types.h>
50#include "ypxfr_extern.h"
51
52 static int fp = 0;
53
54 static bool_t
55 xdr_my_xfr(register XDR *xdrs, xfr *objp)
56{
57 while (1) {
58 if (!xdr_xfr(xdrs, objp))
59 return(FALSE);
60 if (objp->ok == TRUE) {
61 if (write(fp, objp->xfr_u.xfrblock_buf.xfrblock_buf_val,
62 objp->xfr_u.xfrblock_buf.xfrblock_buf_len) == -1) {
63 yp_error("write failed: %s", strerror(errno));
64 return(FALSE);
65 }
66 }
67 xdr_free((xdrproc_t)xdr_xfr, (char *)objp);
68 if (objp->ok == FALSE) {
69 switch (objp->xfr_u.xfrstat) {
70 case(XFR_DONE):
71 return(TRUE);
72 break;
73 case(XFR_READ_ERR):
74 yp_error("got read error from rpc.ypxfrd");
75 return(FALSE);
76 break;
77 case(XFR_ACCESS):
78 yp_error("rpc.ypxfrd couldn't access the map");
79 return(FALSE);
80 break;
81 case(XFR_DENIED):
82 yp_error("access to map denied by rpc.ypxfrd");
83 return(FALSE);
84 break;
85 case(XFR_DB_TYPE_MISMATCH):
86 yp_error("client/server DB type mismatch");
87 return(FALSE);
88 break;
89 case(XFR_DB_ENDIAN_MISMATCH):
90 yp_error("client/server byte order mismatch");
91 return(FALSE);
92 break;
93 default:
94 yp_error("got unknown status from rpc.ypxfrd");
95 return(FALSE);
96 break;
97 }
98 }
99 }
100}
101
102#define PERM_SECURE (S_IRUSR|S_IWUSR)
103
104 int
105 ypxfrd_get_map(char *host, char *map, char *domain, char *tmpname)
106{
107 CLIENT *clnt;
108 struct ypxfr_mapname req;
109 struct xfr resp;
110 struct timeval timeout = { 0, 25 };
111 int status = 0;
112
113 req.xfrmap = map;
114 req.xfrdomain = domain;
115 req.xfrmap_filename = "";
116 req.xfr_db_type = XFR_DB_BSD_HASH; /*
117 req.xfr_byte_order = XFR_ENDIAN_ANY; * Berkeley DB isn't
118 * byte-order sensitive.
119 */
120
121 bzero((char *)&resp, sizeof(resp));
122
123 if ((clnt = clnt_create(host, YPXFRD_FREEBSD_PROG,
124 YPXFRD_FREEBSD_VERS, "tcp")) == NULL) {
125 return(1);
126 }
127
128 if ((fp = open(tmpname, O_RDWR|O_CREAT, PERM_SECURE)) == -1) {
129 clnt_destroy(clnt);
130 yp_error("couldn't open %s: %s", tmpname, strerror(errno));
131 return(1);
132 }
133
134 if (clnt_call(clnt,YPXFRD_GETMAP,
135 (xdrproc_t)xdr_ypxfr_mapname, (char *)&req,
136 (xdrproc_t)xdr_my_xfr, (char *)&resp,
137 timeout) != RPC_SUCCESS) {
138 yp_error("%s", clnt_sperror(clnt,"call to rpc.ypxfrd failed"));
139 status++;
140 unlink(tmpname);
141 }
142
143 clnt_destroy(clnt);
144 close(fp);
145 return(status);
146}
147