#if defined(LIBC_RCS) && !defined(lint)
static char	rcs_id[] = 
"$Header: /afs/sipb.mit.edu/project/sipbsrc/src/webster/lib/RCS/svc_simple.c,v 1.3 91/10/22 22:58:29 probe Exp $";
#endif
#ifdef SUNRPC
/*
 * RCS info
 *	$Locker:  $
 */
/* NFSSRC @(#)svc_simple.c	2.1 86/04/14 */
#if defined(SUN_SCCS) && !defined(lint)
static char	sccsid[] = "@(#)svc_simple.c 1.1 86/02/03 Copyr 1984 Sun Micro";
#endif

/* 
 * svc_simple.c
 * Simplified front end to rpc.
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 */

#include <stdio.h>
#include <sys/types.h>

#ifdef _AIX
#include <sys/select.h>
#endif

#include <rpc/rpc.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netdb.h>

static struct proglst {
	char	*(*p_progname)();
	int	p_prognum;
	int	p_procnum;
	xdrproc_t p_inproc, p_outproc;
	struct proglst *p_nxt;
} *proglst;
int	universal();
static SVCXPRT *transp;
static madetransp;
struct proglst *pl;

registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
char	*(*progname)();
xdrproc_t inproc, outproc;
{

	if (procnum == NULLPROC) {
		fprintf(stderr, "can't reassign procedure number %d\n",
		     NULLPROC);
		return (-1);
	}
	if (!madetransp) {
		madetransp = 1;
		transp = svctcp_create(RPC_ANYSOCK, 0, 0);
		if (transp == NULL) {
			fprintf(stderr, "couldn't create an rpc server\n");
			return (-1);
		}
	}
	pmap_unset(prognum, versnum);
	if (!svc_register(transp, prognum, versnum, universal, IPPROTO_TCP)) {
		fprintf(stderr, "couldn't register prog %d vers %d\n",
		     prognum, versnum);
		return (-1);
	}
	pl = (struct proglst *)malloc(sizeof(struct proglst ));
	if (pl == NULL) {
		fprintf(stderr, "registerrpc: out of memory\n");
		return (-1);
	}
	pl->p_progname = progname;
	pl->p_prognum = prognum;
	pl->p_procnum = procnum;
	pl->p_inproc = inproc;
	pl->p_outproc = outproc;
	pl->p_nxt = proglst;
	proglst = pl;
	return (0);
}

static
universal(rqstp, transp)
struct svc_req *rqstp;
SVCXPRT *transp;
{
	int	prog, proc;
	char	*outdata;
	char	xdrbuf[UDPMSGSIZE];
	struct proglst *pl;

	/* 
	 * enforce "procnum 0 is echo" convention
	 */
	if (rqstp->rq_proc == NULLPROC) {
		if (svc_sendreply(transp, xdr_void, 0) == FALSE) {
			fprintf(stderr, "xxx\n");
			exit(1);
		}
		return;
	}
	prog = rqstp->rq_prog;
	proc = rqstp->rq_proc;
	for (pl = proglst; pl != NULL; pl = pl->p_nxt)
		if (pl->p_prognum == prog && pl->p_procnum == proc) {
			/* decode arguments into a CLEAN buffer */
			bzero(xdrbuf, sizeof(xdrbuf)); /* required ! */
			if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
				svcerr_decode(transp);
				return;
			}
			outdata = (*(pl->p_progname))(xdrbuf);
			if (outdata == NULL && pl->p_outproc != xdr_void)
				/* there was an error */
				return;
			if (!svc_sendreply(transp, pl->p_outproc,
			     outdata)) {
				fprintf(stderr, "trouble replying to prog %d\n",
				     pl->p_prognum);
				/*
				 * library routines should NEVER call
				 * exit()!  I don't care if you ARE
				 * Sun!  I will decide when my server
				 * is in trouble, and I DON'T want my
				 * library trying to second-guess me.
				 * One losing client does not an
				 * emergency make.
				 */
#ifdef NITWIT_STUDENT_HACKERS
				exit(1);
#endif NITWIT_STUDENT_HACKERS
				/* free the decoded arguments */
				(void)svc_freeargs(transp, pl->p_inproc,
				     xdrbuf);
			}
			return;
		}
	fprintf(stderr, "never registered prog %d\n", prog);
	exit(1);
}

#endif SUNRPC