1 /* $NetBSD: pmap_getport.c,v 1.16 2000/07/06 03:10:34 christos Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro"; 36 static char *sccsid = "@(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC"; 37 #else 38 __RCSID("$NetBSD: pmap_getport.c,v 1.16 2000/07/06 03:10:34 christos Exp $"); 39 #endif 40 #endif 41 42 /* 43 * pmap_getport.c 44 * Client interface to pmap rpc service. 45 * 46 * Copyright (C) 1984, Sun Microsystems, Inc. 47 */ 48 49 #include "namespace.h" 50 51 #include <sys/types.h> 52 #include <sys/socket.h> 53 54 #include <net/if.h> 55 56 #include <assert.h> 57 #include <unistd.h> 58 59 #include <rpc/rpc.h> 60 #include <rpc/pmap_prot.h> 61 #include <rpc/pmap_clnt.h> 62 63 #ifdef __weak_alias 64 __weak_alias(pmap_getport,_pmap_getport) 65 #endif 66 67 static const struct timeval timeout = { 5, 0 }; 68 static const struct timeval tottimeout = { 60, 0 }; 69 70 /* 71 * Find the mapped port for program,version. 72 * Calls the pmap service remotely to do the lookup. 73 * Returns 0 if no map exists. 74 */ 75 u_short 76 pmap_getport(address, program, version, protocol) 77 struct sockaddr_in *address; 78 u_long program; 79 u_long version; 80 u_int protocol; 81 { 82 u_short port = 0; 83 int sock = -1; 84 CLIENT *client; 85 struct pmap parms; 86 87 _DIAGASSERT(address != NULL); 88 89 address->sin_port = htons(PMAPPORT); 90 client = clntudp_bufcreate(address, PMAPPROG, 91 PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 92 if (client != NULL) { 93 parms.pm_prog = program; 94 parms.pm_vers = version; 95 parms.pm_prot = protocol; 96 parms.pm_port = 0; /* not needed or used */ 97 if (CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 98 (xdrproc_t)xdr_pmap, 99 &parms, (xdrproc_t)xdr_u_short, &port, tottimeout) != 100 RPC_SUCCESS){ 101 rpc_createerr.cf_stat = RPC_PMAPFAILURE; 102 clnt_geterr(client, &rpc_createerr.cf_error); 103 } else if (port == 0) { 104 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 105 } 106 CLNT_DESTROY(client); 107 } 108 address->sin_port = 0; 109 return (port); 110 } 111