4.3BSD-UWisc/src/lib/libc/rpc/pmap_getport.c

#if defined(LIBC_RCS) && !defined(lint)
static char rcs_id[] = 
	"$Header: pmap_getport.c,v 1.2 86/09/08 14:49:12 tadl Exp $";
#endif
/*
 * RCS info
 *	$Locker:  $
 */
/* NFSSRC @(#)pmap_getport.c	2.1 86/04/14 */
#if defined(SUN_SCCS) && !defined(lint)
static char sccsid[] = "@(#)pmap_getport.c 1.1 86/03/02 Copyr 1984 Sun Micro";
#endif

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

#include "types.h"
#include <netinet/in.h>
#include "xdr.h"
#include "auth.h"
#include "clnt.h"
#include "rpc_msg.h"
#include "pmap_prot.h" 
#include "pmap_clnt.h"
#include <sys/socket.h>
#include <sys/time.h>
#include <stdio.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#define NAMELEN 255

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_long 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, xdr_pmap, &parms,
		    xdr_u_short, &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);
}