1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 * 29 * @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro 30 * @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC 31 * $NetBSD: pmap_getport.c,v 1.16 2000/07/06 03:10:34 christos Exp $ 32 * $FreeBSD: src/lib/libc/rpc/pmap_getport.c,v 1.15 2004/10/16 06:11:35 obrien Exp $ 33 * $DragonFly: src/lib/libc/rpc/pmap_getport.c,v 1.6 2005/11/13 12:27:04 swildner Exp $ 34 */ 35 36 /* 37 * pmap_getport.c 38 * Client interface to pmap rpc service. 39 * 40 * Copyright (C) 1984, Sun Microsystems, Inc. 41 */ 42 43 #include "namespace.h" 44 #include <sys/types.h> 45 #include <sys/socket.h> 46 47 #include <arpa/inet.h> 48 #include <net/if.h> 49 50 #include <assert.h> 51 #include <unistd.h> 52 53 #include <rpc/rpc.h> 54 #include <rpc/pmap_prot.h> 55 #include <rpc/pmap_clnt.h> 56 #include "un-namespace.h" 57 58 static const struct timeval timeout = { 5, 0 }; 59 static const struct timeval tottimeout = { 60, 0 }; 60 61 /* 62 * Find the mapped port for program,version. 63 * Calls the pmap service remotely to do the lookup. 64 * Returns 0 if no map exists. 65 */ 66 u_short 67 pmap_getport(struct sockaddr_in *address, u_long program, u_long version, 68 u_int protocol) 69 { 70 u_short port = 0; 71 int sock = -1; 72 CLIENT *client; 73 struct pmap parms; 74 75 assert(address != NULL); 76 77 address->sin_port = htons(PMAPPORT); 78 client = clntudp_bufcreate(address, PMAPPROG, 79 PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 80 if (client != NULL) { 81 parms.pm_prog = program; 82 parms.pm_vers = version; 83 parms.pm_prot = protocol; 84 parms.pm_port = 0; /* not needed or used */ 85 if (CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 86 (xdrproc_t)xdr_pmap, 87 &parms, (xdrproc_t)xdr_u_short, &port, tottimeout) != 88 RPC_SUCCESS){ 89 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 90 clnt_geterr(client, &rpc_createerr.cf_error); 91 } else if (port == 0) { 92 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 93 } 94 CLNT_DESTROY(client); 95 } 96 address->sin_port = 0; 97 return (port); 98 } 99