pmap_rmt.c revision 261046 
1/*	$NetBSD: pmap_rmt.c,v 1.29 2000/07/06 03:10:34 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * 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 are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 *   this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 *   this list of conditions and the following disclaimer in the documentation
13 *   and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 *   contributors may be used to endorse or promote products derived
16 *   from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#if defined(LIBC_SCCS) && !defined(lint)
32static char *sccsid2 = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro";
33static char *sccsid = "@(#)pmap_rmt.c	2.2 88/08/01 4.0 RPCSRC";
34#endif
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: stable/10/lib/libc/rpc/pmap_rmt.c 261046 2014-01-22 23:45:27Z mav $");
37
38/*
39 * pmap_rmt.c
40 * Client interface to pmap rpc service.
41 * remote call and broadcast service
42 *
43 * Copyright (C) 1984, Sun Microsystems, Inc.
44 */
45
46#include "namespace.h"
47#include <sys/types.h>
48#include <sys/ioctl.h>
49#include <sys/poll.h>
50#include <sys/socket.h>
51
52#include <net/if.h>
53#include <netinet/in.h>
54#include <arpa/inet.h>
55
56#include <assert.h>
57#include <err.h>
58#include <errno.h>
59#include <stdio.h>
60#include <string.h>
61#include <unistd.h>
62
63#include <rpc/rpc.h>
64#include <rpc/pmap_prot.h>
65#include <rpc/pmap_clnt.h>
66#include <rpc/pmap_rmt.h>
67#include "un-namespace.h"
68
69static const struct timeval timeout = { 3, 0 };
70
71/*
72 * pmapper remote-call-service interface.
73 * This routine is used to call the pmapper remote call service
74 * which will look up a service program in the port maps, and then
75 * remotely call that routine with the given parameters.  This allows
76 * programs to do a lookup and call in one step.
77*/
78enum clnt_stat
79pmap_rmtcall(addr, prog, vers, proc, xdrargs, argsp, xdrres, resp, tout,
80    port_ptr)
81	struct sockaddr_in *addr;
82	u_long prog, vers, proc;
83	xdrproc_t xdrargs, xdrres;
84	caddr_t argsp, resp;
85	struct timeval tout;
86	u_long *port_ptr;
87{
88	int sock = -1;
89	CLIENT *client;
90	struct rmtcallargs a;
91	struct rmtcallres r;
92	enum clnt_stat stat;
93
94	assert(addr != NULL);
95	assert(port_ptr != NULL);
96
97	addr->sin_port = htons(PMAPPORT);
98	client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock);
99	if (client != NULL) {
100		a.prog = prog;
101		a.vers = vers;
102		a.proc = proc;
103		a.args_ptr = argsp;
104		a.xdr_args = xdrargs;
105		r.port_ptr = port_ptr;
106		r.results_ptr = resp;
107		r.xdr_results = xdrres;
108		stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT,
109		    (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres,
110		    &r, tout);
111		CLNT_DESTROY(client);
112	} else {
113		stat = RPC_FAILED;
114	}
115	addr->sin_port = 0;
116	return (stat);
117}
118
119
120/*
121 * XDR remote call arguments
122 * written for XDR_ENCODE direction only
123 */
124bool_t
125xdr_rmtcall_args(xdrs, cap)
126	XDR *xdrs;
127	struct rmtcallargs *cap;
128{
129	u_int lenposition, argposition, position;
130
131	assert(xdrs != NULL);
132	assert(cap != NULL);
133
134	if (xdr_u_long(xdrs, &(cap->prog)) &&
135	    xdr_u_long(xdrs, &(cap->vers)) &&
136	    xdr_u_long(xdrs, &(cap->proc))) {
137		lenposition = XDR_GETPOS(xdrs);
138		if (! xdr_u_long(xdrs, &(cap->arglen)))
139		    return (FALSE);
140		argposition = XDR_GETPOS(xdrs);
141		if (! (*(cap->xdr_args))(xdrs, cap->args_ptr))
142		    return (FALSE);
143		position = XDR_GETPOS(xdrs);
144		cap->arglen = (u_long)position - (u_long)argposition;
145		XDR_SETPOS(xdrs, lenposition);
146		if (! xdr_u_long(xdrs, &(cap->arglen)))
147		    return (FALSE);
148		XDR_SETPOS(xdrs, position);
149		return (TRUE);
150	}
151	return (FALSE);
152}
153
154/*
155 * XDR remote call results
156 * written for XDR_DECODE direction only
157 */
158bool_t
159xdr_rmtcallres(xdrs, crp)
160	XDR *xdrs;
161	struct rmtcallres *crp;
162{
163	caddr_t port_ptr;
164
165	assert(xdrs != NULL);
166	assert(crp != NULL);
167
168	port_ptr = (caddr_t)(void *)crp->port_ptr;
169	if (xdr_reference(xdrs, &port_ptr, sizeof (u_long),
170	    (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) {
171		crp->port_ptr = (u_long *)(void *)port_ptr;
172		return ((*(crp->xdr_results))(xdrs, crp->results_ptr));
173	}
174	return (FALSE);
175}
176