/* @(#)pmap_getport.c	2.2 88/08/01 4.0 RPCSRC */
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 * 
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 * 
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 * 
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 * 
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 * 
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
#define __FORCE_GLIBC
#include <features.h>

/*
 * pmap_getport.c
 * Client interface to pmap rpc service.
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 */

#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
#include <sys/socket.h>
#include <unistd.h>
//#include <net/if.h>

static struct timeval timeout = { 5, 0 };
static struct timeval tottimeout = { 60, 0 };

/*
 * Find the mapped port for program,version.
 * Calls the pmap service remotely to do the lookup.
 * Returns 0 if no map exists.
 */
u_short pmap_getport(address, program, version, protocol)
struct sockaddr_in *address;
u_long program;
u_long version;
u_int protocol;
{
	u_short port = 0;
	int socket = -1;
	register CLIENT *client;
	struct pmap parms;

	address->sin_port = htons(PMAPPORT);
	client = clntudp_bufcreate(address, PMAPPROG,
							   PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE,
							   RPCSMALLMSGSIZE);
	if (client != (CLIENT *) NULL) {
		parms.pm_prog = program;
		parms.pm_vers = version;
		parms.pm_prot = protocol;
		parms.pm_port = 0;		/* not needed or used */
		if (CLNT_CALL(client, PMAPPROC_GETPORT,
					  (xdrproc_t) xdr_pmap, (caddr_t) &parms,
					  (xdrproc_t) xdr_u_short, (caddr_t) &port,
					  tottimeout) != RPC_SUCCESS) {
			rpc_createerr.cf_stat = RPC_PMAPFAILURE;
			clnt_geterr(client, &rpc_createerr.cf_error);
		} else if (port == 0) {
			rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
		}
		CLNT_DESTROY(client);
	}
	(void) close(socket);
	address->sin_port = 0;
	return (port);
}
