1 /* $NetBSD: pmap_getport.c,v 1.16 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 = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro"; 33 static char *sccsid = "from: @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC"; 34 #endif 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 /* 39 * pmap_getport.c 40 * Client interface to pmap rpc service. 41 * 42 * Copyright (C) 1984, Sun Microsystems, Inc. 43 */ 44 45 #include "namespace.h" 46 #include <sys/types.h> 47 #include <sys/socket.h> 48 49 #include <arpa/inet.h> 50 #include <net/if.h> 51 52 #include <assert.h> 53 #include <unistd.h> 54 55 #include <rpc/rpc.h> 56 #include <rpc/pmap_prot.h> 57 #include <rpc/pmap_clnt.h> 58 #include "un-namespace.h" 59 60 static const struct timeval timeout = { 5, 0 }; 61 static const struct timeval tottimeout = { 60, 0 }; 62 63 /* 64 * Find the mapped port for program,version. 65 * Calls the pmap service remotely to do the lookup. 66 * Returns 0 if no map exists. 67 */ 68 u_short 69 pmap_getport(struct sockaddr_in *address, u_long program, u_long version, 70 u_int protocol) 71 { 72 u_short port = 0; 73 int sock = -1; 74 CLIENT *client; 75 struct pmap parms; 76 77 assert(address != NULL); 78 79 address->sin_port = htons(PMAPPORT); 80 client = clntudp_bufcreate(address, PMAPPROG, 81 PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 82 if (client != NULL) { 83 parms.pm_prog = program; 84 parms.pm_vers = version; 85 parms.pm_prot = protocol; 86 parms.pm_port = 0; /* not needed or used */ 87 if (CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 88 (xdrproc_t)xdr_pmap, 89 &parms, (xdrproc_t)xdr_u_short, &port, tottimeout) != 90 RPC_SUCCESS){ 91 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 92 clnt_geterr(client, &rpc_createerr.cf_error); 93 } else if (port == 0) { 94 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 95 } 96 CLNT_DESTROY(client); 97 } 98 address->sin_port = 0; 99 return (port); 100 } 101