1 /* $NetBSD: pmap_rmt.c,v 1.29 2000/07/06 03:10:34 christos Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 * - Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 * - Neither the name of Sun Microsystems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #if defined(LIBC_SCCS) && !defined(lint)
34 static char *sccsid2 = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro";
35 static char *sccsid = "@(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC";
36 #endif
37 /*
38 * pmap_rmt.c
39 * Client interface to pmap rpc service.
40 * remote call and broadcast service
41 *
42 * Copyright (C) 1984, Sun Microsystems, Inc.
43 */
44
45 #include "namespace.h"
46 #include <sys/types.h>
47 #include <sys/ioctl.h>
48 #include <sys/poll.h>
49 #include <sys/socket.h>
50
51 #include <net/if.h>
52 #include <netinet/in.h>
53 #include <arpa/inet.h>
54
55 #include <assert.h>
56 #include <err.h>
57 #include <errno.h>
58 #include <stdio.h>
59 #include <string.h>
60 #include <unistd.h>
61
62 #include <rpc/rpc.h>
63 #include <rpc/pmap_prot.h>
64 #include <rpc/pmap_clnt.h>
65 #include <rpc/pmap_rmt.h>
66 #include "un-namespace.h"
67
68 static const struct timeval timeout = { 3, 0 };
69
70 /*
71 * pmapper remote-call-service interface.
72 * This routine is used to call the pmapper remote call service
73 * which will look up a service program in the port maps, and then
74 * remotely call that routine with the given parameters. This allows
75 * programs to do a lookup and call in one step.
76 */
77 enum clnt_stat
pmap_rmtcall(struct sockaddr_in * addr,u_long prog,u_long vers,u_long proc,xdrproc_t xdrargs,caddr_t argsp,xdrproc_t xdrres,caddr_t resp,struct timeval tout,u_long * port_ptr)78 pmap_rmtcall(struct sockaddr_in *addr, u_long prog, u_long vers, u_long proc,
79 xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp,
80 struct timeval tout, u_long *port_ptr)
81 {
82 int sock = -1;
83 CLIENT *client;
84 struct rmtcallargs a;
85 struct rmtcallres r;
86 enum clnt_stat stat;
87
88 assert(addr != NULL);
89 assert(port_ptr != NULL);
90
91 addr->sin_port = htons(PMAPPORT);
92 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock);
93 if (client != NULL) {
94 a.prog = prog;
95 a.vers = vers;
96 a.proc = proc;
97 a.args_ptr = argsp;
98 a.xdr_args = xdrargs;
99 r.port_ptr = port_ptr;
100 r.results_ptr = resp;
101 r.xdr_results = xdrres;
102 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT,
103 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres,
104 &r, tout);
105 CLNT_DESTROY(client);
106 } else {
107 stat = RPC_FAILED;
108 }
109 addr->sin_port = 0;
110 return (stat);
111 }
112
113
114 /*
115 * XDR remote call arguments
116 * written for XDR_ENCODE direction only
117 */
118 bool_t
xdr_rmtcall_args(XDR * xdrs,struct rmtcallargs * cap)119 xdr_rmtcall_args(XDR *xdrs, struct rmtcallargs *cap)
120 {
121 u_int lenposition, argposition, position;
122
123 assert(xdrs != NULL);
124 assert(cap != NULL);
125
126 if (xdr_u_long(xdrs, &(cap->prog)) &&
127 xdr_u_long(xdrs, &(cap->vers)) &&
128 xdr_u_long(xdrs, &(cap->proc))) {
129 lenposition = XDR_GETPOS(xdrs);
130 if (! xdr_u_long(xdrs, &(cap->arglen)))
131 return (FALSE);
132 argposition = XDR_GETPOS(xdrs);
133 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr))
134 return (FALSE);
135 position = XDR_GETPOS(xdrs);
136 cap->arglen = (u_long)position - (u_long)argposition;
137 XDR_SETPOS(xdrs, lenposition);
138 if (! xdr_u_long(xdrs, &(cap->arglen)))
139 return (FALSE);
140 XDR_SETPOS(xdrs, position);
141 return (TRUE);
142 }
143 return (FALSE);
144 }
145
146 /*
147 * XDR remote call results
148 * written for XDR_DECODE direction only
149 */
150 bool_t
xdr_rmtcallres(XDR * xdrs,struct rmtcallres * crp)151 xdr_rmtcallres(XDR *xdrs, struct rmtcallres *crp)
152 {
153 caddr_t port_ptr;
154
155 assert(xdrs != NULL);
156 assert(crp != NULL);
157
158 port_ptr = (caddr_t)(void *)crp->port_ptr;
159 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long),
160 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) {
161 crp->port_ptr = (u_long *)(void *)port_ptr;
162 return ((*(crp->xdr_results))(xdrs, crp->results_ptr));
163 }
164 return (FALSE);
165 }
166