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pmap_getport.c revision 1.2 
      1 /*	$NetBSD: pmap_getport.c,v 1.2 1995/02/25 03:01:49 cgd 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 #if defined(LIBC_SCCS) && !defined(lint)
     33 /*static char *sccsid = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";*/
     34 /*static char *sccsid = "from: @(#)pmap_getport.c	2.2 88/08/01 4.0 RPCSRC";*/
     35 static char *rcsid = "$NetBSD: pmap_getport.c,v 1.2 1995/02/25 03:01:49 cgd Exp $";
     36 #endif
     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 <rpc/rpc.h>
     46 #include <rpc/pmap_prot.h>
     47 #include <rpc/pmap_clnt.h>
     48 #include <sys/socket.h>
     49 #include <net/if.h>
     50 
     51 static struct timeval timeout = { 5, 0 };
     52 static struct timeval tottimeout = { 60, 0 };
     53 
     54 /*
     55  * Find the mapped port for program,version.
     56  * Calls the pmap service remotely to do the lookup.
     57  * Returns 0 if no map exists.
     58  */
     59 u_short
     60 pmap_getport(address, program, version, protocol)
     61 	struct sockaddr_in *address;
     62 	u_long program;
     63 	u_long version;
     64 	u_int protocol;
     65 {
     66 	u_short port = 0;
     67 	int socket = -1;
     68 	register CLIENT *client;
     69 	struct pmap parms;
     70 
     71 	address->sin_port = htons(PMAPPORT);
     72 	client = clntudp_bufcreate(address, PMAPPROG,
     73 	    PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
     74 	if (client != (CLIENT *)NULL) {
     75 		parms.pm_prog = program;
     76 		parms.pm_vers = version;
     77 		parms.pm_prot = protocol;
     78 		parms.pm_port = 0;  /* not needed or used */
     79 		if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
     80 		    xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
     81 			rpc_createerr.cf_stat = RPC_PMAPFAILURE;
     82 			clnt_geterr(client, &rpc_createerr.cf_error);
     83 		} else if (port == 0) {
     84 			rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
     85 		}
     86 		CLNT_DESTROY(client);
     87 	}
     88 	(void)close(socket);
     89 	address->sin_port = 0;
     90 	return (port);
     91 }
     92