/*
** File name:	GETSYI_CLNT_RMTCALL.C
**
** Copyright (c) 1991, by
** Process Software Corporation
** Framingham, Massachusetts
**
** This file along with GETSYI_CLNT_SUBS.C implement a client for the getsyi
** protocol.  This particular client uses the RPC pmap_rmtcall function.
*/

/*
** Include files
*/
#include <SSDEF.H>
#include "TCPWARE_INCLUDE:RPC.H"
#include "TCPWARE_INCLUDE:SOCKET.H"
#include "TCPWARE_INCLUDE:NETDB.H"
#include "GETSYI.H"
#include "GETSYI_DEF.H"

/*
** Declare Functions
*/
longw	parse_command_line();
void	write_output();

/*
** Variables
**
** The transport that the client will use to contact the server.  Since the
** pmap_rmtcall RPC function must use UDP, do not allow the user to specify a
** transport.  This is done by initially setting transport to the string "UDP".
*/
globaldef char	transport[4] = {"UDP"};

/*
** The name of the server's host.  An initial value of 0 allows the user to
** specify any host.
*/
globaldef char	*host = 0;		/* user may give host name */

static readonly char	usage[] =
	"Command format: getsyi [-d#] [-hhost] [-nnode] code [code...]\n";

/*
****************************************
**
**		Main program
**
** Abstract:
**	This client program demonstrates the use of the pmap_rmtcall function.
*/
main( argc, argv)
  int	argc;
  char	*argv[];
{
	longw		status,		/* status returned by functions */
			rmt_port;	/* port that the server is listening
					** on.  Returned by pmap_rmtcall */
	int		rpc_status;	/* pmap_rmtcall status code */
	getsyi_args	args;		/* request sent to server */
	getsyi_res	results;	/* reply received from server */
	struct sockaddr_in	addr;	/* Address of the server's host */
	struct hostent	*he;		/* used to get the server's address */
	struct timeval	timeout = {25, 0}; /* RPC call timeout (25 sec) */

/*
** Parse the command line that the user entered.  After this function call, the
** variable host points the name of the server's host and args contains all of
** the information that will be sent to the server.
*/
	_error( status = parse_command_line( argc, argv, &args))
	{
	  if( status == SS$_BADPARAM)
	    printf( usage);
	  exit( status);
	}

/*
** The hostname must be converted into an address since pmap_rmtcall requires
** the remote host to be specified as an address, not as a string.
*/
	if( (he = gethostbyname( host)) == 0)
	{
	  printf( "Unknown host name\n");
	  exit( SS$_NOSUCHNODE);
	}
	bcopy( he->h_addr, &addr.sin_addr, he->h_length);
	addr.sin_family = AF_INET;
	addr.sin_port =  0;

/*
** results must be zeroed so that xdr_getsyi_res will allocate the memory.
** Otherwise, xdr_getsyi_res assumes that results contains the addresses of
** valid buffers.
*/
	bzero( &results, sizeof( results));
	if( rpc_status = pmap_rmtcall( &addr, GETSYI_PROG, GETSYI_VERS_1,
		GETSYI_PROC_1, xdr_getsyi_args, &args, xdr_getsyi_res,
		&results, timeout, &rmt_port) != 0)
	{
	  printf( "Unable to call server\n");
	  clnt_perrno( rpc_status);	/* print why pmap_rmtcall failed */
	  exit( SS$_OPINCOMPL);
	}
/*
** Display the output for the user to see.
*/
	write_output( &args, &results);
	exit( SS$_NORMAL);
}

/* end file GETSYI_CLNT_RMTCALL.C */