1 /* $OpenBSD: pmap_getport.c,v 1.10 2005/08/08 08:05:35 espie Exp $ */ 2 /* 3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 4 * unrestricted use provided that this legend is included on all tape 5 * media and as a part of the software program in whole or part. Users 6 * may copy or modify Sun RPC without charge, but are not authorized 7 * to license or distribute it to anyone else except as part of a product or 8 * program developed by the user. 9 * 10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 13 * 14 * Sun RPC is provided with no support and without any obligation on the 15 * part of Sun Microsystems, Inc. to assist in its use, correction, 16 * modification or enhancement. 17 * 18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 20 * OR ANY PART THEREOF. 21 * 22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 23 * or profits or other special, indirect and consequential damages, even if 24 * Sun has been advised of the possibility of such damages. 25 * 26 * Sun Microsystems, Inc. 27 * 2550 Garcia Avenue 28 * Mountain View, California 94043 29 */ 30 31 /* 32 * pmap_getport.c 33 * Client interface to pmap rpc service. 34 * 35 * Copyright (C) 1984, Sun Microsystems, Inc. 36 */ 37 38 #include <unistd.h> 39 #include <rpc/rpc.h> 40 #include <rpc/pmap_prot.h> 41 #include <rpc/pmap_clnt.h> 42 #include <sys/socket.h> 43 #include <net/if.h> 44 45 static struct timeval timeout = { 5, 0 }; 46 static struct timeval tottimeout = { 60, 0 }; 47 48 /* 49 * Find the mapped port for program,version. 50 * Calls the pmap service remotely to do the lookup. 51 * Returns 0 if no map exists. 52 */ 53 u_short 54 pmap_getport(struct sockaddr_in *address, u_long program, u_long version, 55 u_int protocol) 56 { 57 u_short port = 0; 58 int sock = -1; 59 CLIENT *client; 60 struct pmap parms; 61 62 address->sin_port = htons(PMAPPORT); 63 client = clntudp_bufcreate(address, PMAPPROG, 64 PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 65 if (client != NULL) { 66 parms.pm_prog = program; 67 parms.pm_vers = version; 68 parms.pm_prot = protocol; 69 parms.pm_port = 0; /* not needed or used */ 70 if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms, 71 xdr_u_short, &port, tottimeout) != RPC_SUCCESS){ 72 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 73 clnt_geterr(client, &rpc_createerr.cf_error); 74 } else if (port == 0) { 75 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 76 } 77 CLNT_DESTROY(client); 78 } 79 if (sock != -1) 80 (void)close(sock); 81 address->sin_port = 0; 82 return (port); 83 } 84