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 * $FreeBSD: src/lib/libc/rpc/pmap_getport.c,v 1.10 2000/01/27 23:06:40 jasone 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 <rpc/rpc.h> 44 #include <rpc/pmap_prot.h> 45 #include <rpc/pmap_clnt.h> 46 #include <sys/socket.h> 47 #include <net/if.h> 48 #include <unistd.h> 49 #include "un-namespace.h" 50 51 static struct timeval timeout = { 5, 0 }; 52 static struct timeval tottimeout = { 60, 0 }; 53 54 /* 55 * Change the primary pmap_getport() timeout 56 */ 57 void 58 pmap_getport_timeout(struct timeval *otv, struct timeval *ntv) 59 { 60 if (otv) 61 *otv = tottimeout; 62 if (ntv) 63 tottimeout = *ntv; 64 } 65 66 /* 67 * Find the mapped port for program,version. 68 * Calls the pmap service remotely to do the lookup. 69 * Returns 0 if no map exists. 70 */ 71 u_short 72 pmap_getport(struct sockaddr_in *address, u_long program, u_long version, 73 u_int protocol) 74 { 75 u_short port = 0; 76 int socket = -1; 77 CLIENT *client; 78 struct pmap parms; 79 80 address->sin_port = htons(PMAPPORT); 81 client = clntudp_bufcreate(address, PMAPPROG, 82 PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 83 if (client != (CLIENT *)NULL) { 84 parms.pm_prog = program; 85 parms.pm_vers = version; 86 parms.pm_prot = protocol; 87 parms.pm_port = 0; /* not needed or used */ 88 if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms, 89 xdr_u_short, &port, tottimeout) != RPC_SUCCESS){ 90 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 91 clnt_geterr(client, &rpc_createerr.cf_error); 92 } else if (port == 0) { 93 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 94 } 95 CLNT_DESTROY(client); 96 } 97 if (socket != -1) 98 _close(socket); 99 address->sin_port = 0; 100 return (port); 101 } 102