1 /*- 2 * Copyright (c) 2009, Sun Microsystems, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * - Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * - Redistributions in binary form must reproduce the above copyright notice, 10 * this list of conditions and the following disclaimer in the documentation 11 * and/or other materials provided with the distribution. 12 * - Neither the name of Sun Microsystems, Inc. nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 * @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro 29 * @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC 30 * $NetBSD: pmap_getport.c,v 1.16 2000/07/06 03:10:34 christos Exp $ 31 * $FreeBSD: src/lib/libc/rpc/pmap_getport.c,v 1.15 2004/10/16 06:11:35 obrien Exp $ 32 * $DragonFly: src/lib/libc/rpc/pmap_getport.c,v 1.6 2005/11/13 12:27:04 swildner Exp $ 33 */ 34 35 /* 36 * pmap_getport.c 37 * Client interface to pmap rpc service. 38 * 39 * Copyright (C) 1984, Sun Microsystems, Inc. 40 */ 41 42 #include "namespace.h" 43 #include <sys/types.h> 44 #include <sys/socket.h> 45 46 #include <arpa/inet.h> 47 #include <net/if.h> 48 49 #include <assert.h> 50 #include <unistd.h> 51 52 #include <rpc/rpc.h> 53 #include <rpc/pmap_prot.h> 54 #include <rpc/pmap_clnt.h> 55 #include "un-namespace.h" 56 57 static const struct timeval timeout = { 5, 0 }; 58 static const struct timeval tottimeout = { 60, 0 }; 59 60 /* 61 * Find the mapped port for program,version. 62 * Calls the pmap service remotely to do the lookup. 63 * Returns 0 if no map exists. 64 */ 65 u_short 66 pmap_getport(struct sockaddr_in *address, u_long program, u_long version, 67 u_int protocol) 68 { 69 u_short port = 0; 70 int sock = -1; 71 CLIENT *client; 72 struct pmap parms; 73 74 assert(address != NULL); 75 76 address->sin_port = htons(PMAPPORT); 77 client = clntudp_bufcreate(address, PMAPPROG, 78 PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 79 if (client != NULL) { 80 parms.pm_prog = program; 81 parms.pm_vers = version; 82 parms.pm_prot = protocol; 83 parms.pm_port = 0; /* not needed or used */ 84 if (CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 85 (xdrproc_t)xdr_pmap, 86 &parms, (xdrproc_t)xdr_u_short, &port, tottimeout) != 87 RPC_SUCCESS){ 88 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 89 clnt_geterr(client, &rpc_createerr.cf_error); 90 } else if (port == 0) { 91 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 92 } 93 CLNT_DESTROY(client); 94 } 95 address->sin_port = 0; 96 return (port); 97 } 98