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 #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
50 static int fp = 0;
51
52 static bool_t
xdr_my_xfr(register XDR * xdrs,xfr * objp)53 xdr_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
102 int
ypxfrd_get_map(char * host,char * map,char * domain,char * tmpname)103 ypxfrd_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