/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include "rstat.h"
#include "rstat_v2.h"
#include <stdio.h>
#include <stdlib.h> /* getenv, exit */
#include <signal.h>
#include <sys/types.h>
#include <memory.h>
#include <stropts.h>
#include <netconfig.h>
#include <syslog.h>

#ifdef __STDC__
#define	SIG_PF void(*)(int)
#endif

#ifdef DEBUG
#define	RPC_SVC_FG
#endif


int _rpcpmstart;		/* Started by a port monitor ? */
int _rpcfdtype;			/* Whether Stream or Datagram ? */
int _rpcsvcdirty;		/* Still serving ? */

static void _msgout(/*char *msg*/);
static void closedown();

extern void rstatprog_4(/*struct svc_req *rqstp, SVCXPRT *transp*/);
extern void rstatprog_3(/*struct svc_req *rqstp, SVCXPRT *transp*/);
extern void rstatprog_2(/*struct svc_req *rqstp, SVCXPRT *transp*/);

int
main(int argc, char *argv[])
{
	pid_t pid;
	int i;

	/*
	 * If stdin looks like a TLI endpoint, we assume
	 * that we were started by a port monitor. If
	 * t_getstate fails with TBADF, this is not a
	 * TLI endpoint.
	 */
	if (t_getstate(0) != -1 || t_errno != TBADF) {
		char *netid;
		struct netconfig *nconf = NULL;
		SVCXPRT *transp;

		_rpcpmstart = 1;
		openlog("rstatd", LOG_PID, LOG_DAEMON);
		if ((netid = getenv("NLSPROVIDER")) == NULL) {
#ifdef DEBUG
			_msgout("cannot get transport name");
#endif
		} else if ((nconf = getnetconfigent(netid)) == NULL) {
#ifdef DEBUG
			_msgout("cannot get transport info");
#endif
		}
		if ((transp = svc_tli_create(0, nconf, NULL, 0, 0)) == NULL) {
			_msgout("cannot create server handle");
			exit(1);
		}
		if (nconf)
			freenetconfigent(nconf);
		if (!svc_reg(transp, RSTATPROG, RSTATVERS_VAR, rstatprog_4,
		    0)) {
			_msgout("unable to register "
			    "(RSTATPROG, RSTATVERS_VAR).");
			exit(1);
		}
		if (!svc_reg(transp, RSTATPROG, RSTATVERS_TIME, rstatprog_3,
		    0)) {
			_msgout("unable to register "
			    "(RSTATPROG, RSTATVERS_TIME).");
			exit(1);
		}
		if (!svc_reg(transp, RSTATPROG, RSTATVERS_SWTCH, rstatprog_2,
		    0)) {
			_msgout("unable to register "
			    "(RSTATPROG, RSTATVERS_SWTCH).");
			exit(1);
		}
		svc_run();
		exit(1);
		/* NOTREACHED */
	} else {
#ifndef RPC_SVC_FG
		pid = fork();
		if (pid < 0) {
			perror("cannot fork");
			exit(1);
		}
		if (pid)
			exit(0);
		closefrom(0);
		i = open("/dev/console", 2);
		(void) dup2(i, 1);
		(void) dup2(i, 2);
		setsid();
		openlog("rstatd", LOG_PID, LOG_DAEMON);
#endif
	}
	if (!svc_create(rstatprog_4, RSTATPROG, RSTATVERS_VAR, "datagram_v")) {
		_msgout("unable to create (RSTATPROG, RSTATVERS_VAR) "
		    "for datagram_v.");
		exit(1);
	}
	if (!svc_create(rstatprog_3, RSTATPROG, RSTATVERS_TIME,
	    "datagram_v")) {
		_msgout("unable to create (RSTATPROG, RSTATVERS_TIME) "
		    "for datagram_v.");
		exit(1);
	}
	if (!svc_create(rstatprog_4, RSTATPROG, RSTATVERS_VAR, "circuit_v")) {
		_msgout("unable to create (RSTATPROG, RSTATVERS_VAR) "
		    "for circuit_v.");
		exit(1);
	}
	if (!svc_create(rstatprog_3, RSTATPROG, RSTATVERS_TIME, "circuit_v")) {
		_msgout("unable to create (RSTATPROG, RSTATVERS_TIME) "
		    "for circuit_v.");
		exit(1);
	}

	/*
	 * V2 supported on datagram transports *only*
	 */
	if (!svc_create(rstatprog_2, RSTATPROG, RSTATVERS_SWTCH,
	    "datagram_v")) {
		_msgout("unable to create (RSTATPROG, RSTATVERS_SWTCH) "
		    "for datagram_v.");
		exit(1);
	}

	svc_run();
	_msgout("svc_run returned");
	return (1);
}

static void
_msgout(msg)
	char *msg;
{
#ifdef RPC_SVC_FG
	if (_rpcpmstart)
		syslog(LOG_ERR, msg);
	else
		(void) fprintf(stderr, "%s\n", msg);
#else
	syslog(LOG_ERR, msg);
#endif
}