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 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 /* 41 * pmap_rmt.c 42 * Client interface to pmap rpc service. 43 * remote call and broadcast service 44 * 45 * Copyright (C) 1984, Sun Microsystems, Inc. 46 */ 47 48 #include "namespace.h" 49 #include <sys/types.h> 50 #include <sys/ioctl.h> 51 #include <sys/poll.h> 52 #include <sys/socket.h> 53 54 #include <net/if.h> 55 #include <netinet/in.h> 56 #include <arpa/inet.h> 57 58 #include <assert.h> 59 #include <err.h> 60 #include <errno.h> 61 #include <stdio.h> 62 #include <string.h> 63 #include <unistd.h> 64 65 #include <rpc/rpc.h> 66 #include <rpc/pmap_prot.h> 67 #include <rpc/pmap_clnt.h> 68 #include <rpc/pmap_rmt.h> 69 #include "un-namespace.h" 70 71 static const struct timeval timeout = { 3, 0 }; 72 73 /* 74 * pmapper remote-call-service interface. 75 * This routine is used to call the pmapper remote call service 76 * which will look up a service program in the port maps, and then 77 * remotely call that routine with the given parameters. This allows 78 * programs to do a lookup and call in one step. 79 */ 80 enum clnt_stat 81 pmap_rmtcall(struct sockaddr_in *addr, u_long prog, u_long vers, u_long proc, 82 xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp, 83 struct timeval tout, u_long *port_ptr) 84 { 85 int sock = -1; 86 CLIENT *client; 87 struct rmtcallargs a; 88 struct rmtcallres r; 89 enum clnt_stat stat; 90 91 assert(addr != NULL); 92 assert(port_ptr != NULL); 93 94 addr->sin_port = htons(PMAPPORT); 95 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock); 96 if (client != NULL) { 97 a.prog = prog; 98 a.vers = vers; 99 a.proc = proc; 100 a.args_ptr = argsp; 101 a.xdr_args = xdrargs; 102 r.port_ptr = port_ptr; 103 r.results_ptr = resp; 104 r.xdr_results = xdrres; 105 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT, 106 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres, 107 &r, tout); 108 CLNT_DESTROY(client); 109 } else { 110 stat = RPC_FAILED; 111 } 112 addr->sin_port = 0; 113 return (stat); 114 } 115 116 117 /* 118 * XDR remote call arguments 119 * written for XDR_ENCODE direction only 120 */ 121 bool_t 122 xdr_rmtcall_args(XDR *xdrs, struct rmtcallargs *cap) 123 { 124 u_int lenposition, argposition, position; 125 126 assert(xdrs != NULL); 127 assert(cap != NULL); 128 129 if (xdr_u_long(xdrs, &(cap->prog)) && 130 xdr_u_long(xdrs, &(cap->vers)) && 131 xdr_u_long(xdrs, &(cap->proc))) { 132 lenposition = XDR_GETPOS(xdrs); 133 if (! xdr_u_long(xdrs, &(cap->arglen))) 134 return (FALSE); 135 argposition = XDR_GETPOS(xdrs); 136 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr)) 137 return (FALSE); 138 position = XDR_GETPOS(xdrs); 139 cap->arglen = (u_long)position - (u_long)argposition; 140 XDR_SETPOS(xdrs, lenposition); 141 if (! xdr_u_long(xdrs, &(cap->arglen))) 142 return (FALSE); 143 XDR_SETPOS(xdrs, position); 144 return (TRUE); 145 } 146 return (FALSE); 147 } 148 149 /* 150 * XDR remote call results 151 * written for XDR_DECODE direction only 152 */ 153 bool_t 154 xdr_rmtcallres(XDR *xdrs, struct rmtcallres *crp) 155 { 156 caddr_t port_ptr; 157 158 assert(xdrs != NULL); 159 assert(crp != NULL); 160 161 port_ptr = (caddr_t)(void *)crp->port_ptr; 162 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long), 163 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) { 164 crp->port_ptr = (u_long *)(void *)port_ptr; 165 return ((*(crp->xdr_results))(xdrs, crp->results_ptr)); 166 } 167 return (FALSE); 168 } 169