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)
32 static char *sccsid2 = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro";
33 static char *sccsid = "@(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC";
34 #endif
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
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
69 static 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 */
78 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)79 pmap_rmtcall(struct sockaddr_in *addr, u_long prog, u_long vers, u_long proc,
80 xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp,
81 struct timeval tout, u_long *port_ptr)
82 {
83 int sock = -1;
84 CLIENT *client;
85 struct rmtcallargs a;
86 struct rmtcallres r;
87 enum clnt_stat stat;
88
89 assert(addr != NULL);
90 assert(port_ptr != NULL);
91
92 addr->sin_port = htons(PMAPPORT);
93 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock);
94 if (client != NULL) {
95 a.prog = prog;
96 a.vers = vers;
97 a.proc = proc;
98 a.args_ptr = argsp;
99 a.xdr_args = xdrargs;
100 r.port_ptr = port_ptr;
101 r.results_ptr = resp;
102 r.xdr_results = xdrres;
103 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT,
104 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres,
105 &r, tout);
106 CLNT_DESTROY(client);
107 } else {
108 stat = RPC_FAILED;
109 }
110 addr->sin_port = 0;
111 return (stat);
112 }
113
114
115 /*
116 * XDR remote call arguments
117 * written for XDR_ENCODE direction only
118 */
119 bool_t
xdr_rmtcall_args(XDR * xdrs,struct rmtcallargs * cap)120 xdr_rmtcall_args(XDR *xdrs, struct rmtcallargs *cap)
121 {
122 u_int lenposition, argposition, position;
123
124 assert(xdrs != NULL);
125 assert(cap != NULL);
126
127 if (xdr_u_long(xdrs, &(cap->prog)) &&
128 xdr_u_long(xdrs, &(cap->vers)) &&
129 xdr_u_long(xdrs, &(cap->proc))) {
130 lenposition = XDR_GETPOS(xdrs);
131 if (! xdr_u_long(xdrs, &(cap->arglen)))
132 return (FALSE);
133 argposition = XDR_GETPOS(xdrs);
134 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr))
135 return (FALSE);
136 position = XDR_GETPOS(xdrs);
137 cap->arglen = (u_long)position - (u_long)argposition;
138 XDR_SETPOS(xdrs, lenposition);
139 if (! xdr_u_long(xdrs, &(cap->arglen)))
140 return (FALSE);
141 XDR_SETPOS(xdrs, position);
142 return (TRUE);
143 }
144 return (FALSE);
145 }
146
147 /*
148 * XDR remote call results
149 * written for XDR_DECODE direction only
150 */
151 bool_t
xdr_rmtcallres(XDR * xdrs,struct rmtcallres * crp)152 xdr_rmtcallres(XDR *xdrs, struct rmtcallres *crp)
153 {
154 caddr_t port_ptr;
155
156 assert(xdrs != NULL);
157 assert(crp != NULL);
158
159 port_ptr = (caddr_t)(void *)crp->port_ptr;
160 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long),
161 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) {
162 crp->port_ptr = (u_long *)(void *)port_ptr;
163 return ((*(crp->xdr_results))(xdrs, crp->results_ptr));
164 }
165 return (FALSE);
166 }
167