1 /* $NetBSD: pmap_getport.c,v 1.16 2000年07月06日 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 = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro"; 35 static char *sccsid = "from: @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC"; 36#endif 37#include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 /* 41 * pmap_getport.c 42 * Client interface to pmap rpc service. 43 * 44 * Copyright (C) 1984, Sun Microsystems, Inc. 45 */ 46 47#include "namespace.h" 48#include <sys/types.h> 49#include <sys/socket.h> 50 51#include <arpa/inet.h> 52#include <net/if.h> 53 54#include <assert.h> 55#include <unistd.h> 56 57#include <rpc/rpc.h> 58#include <rpc/pmap_prot.h> 59#include <rpc/pmap_clnt.h> 60#include "un-namespace.h" 61 62 static const struct timeval timeout = { 5, 0 }; 63 static const struct timeval tottimeout = { 60, 0 }; 64 65 /* 66 * Find the mapped port for program,version. 67 * Calls the pmap service remotely to do the lookup. 68 * Returns 0 if no map exists. 69 */ 70 u_short 71 pmap_getport(struct sockaddr_in *address, u_long program, u_long version, 72 u_int protocol) 73{ 74 u_short port = 0; 75 int sock = -1; 76 CLIENT *client; 77 struct pmap parms; 78 79 assert(address != NULL); 80 81 address->sin_port = htons(PMAPPORT); 82 client = clntudp_bufcreate(address, PMAPPROG, 83 PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 84 if (client != NULL) { 85 parms.pm_prog = program; 86 parms.pm_vers = version; 87 parms.pm_prot = protocol; 88 parms.pm_port = 0; /* not needed or used */ 89 if (CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 90 (xdrproc_t)xdr_pmap, 91 &parms, (xdrproc_t)xdr_u_short, &port, tottimeout) != 92 RPC_SUCCESS){ 93 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 94 clnt_geterr(client, &rpc_createerr.cf_error); 95 } else if (port == 0) { 96 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 97 } 98 CLNT_DESTROY(client); 99 } 100 address->sin_port = 0; 101 return (port); 102} 103