/*
 * 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
}