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Current File : //usr/src/libexec/rpc.rusersd/rusersd.c

/*-
 * Copyright (c) 1993, John Brezak
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static const char rcsid[] =
  "$FreeBSD: release/9.1.0/libexec/rpc.rusersd/rusersd.c 201192 2009-12-29 10:28:20Z ed $";
#endif /* not lint */

#include <stdlib.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <signal.h>
#include <syslog.h>
#include <rpcsvc/rnusers.h>

extern void rusers_service(struct svc_req *, SVCXPRT *);

int from_inetd = 1;

static void
cleanup(int sig __unused)
{
	(void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
	(void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL);
	exit(0);
}

int
main(int argc __unused, char *argv[] __unused)
{
	SVCXPRT *transp = NULL; /* Keep compiler happy. */
	int ok;
	struct sockaddr_storage from;
	socklen_t fromlen;

	/*
	 * See if inetd started us
	 */
	fromlen = sizeof(from);
	if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
		from_inetd = 0;
	}

	if (!from_inetd) {
		daemon(0, 0);

		(void) rpcb_unset(RUSERSPROG, RUSERSVERS_IDLE, NULL);
		(void) rpcb_unset(RUSERSPROG, RUSERSVERS_ORIG, NULL);

		(void) signal(SIGINT, cleanup);
		(void) signal(SIGTERM, cleanup);
		(void) signal(SIGHUP, cleanup);
	}

	openlog("rpc.rusersd", LOG_CONS|LOG_PID, LOG_DAEMON);

	if (from_inetd) {
		transp = svc_tli_create(0, NULL, NULL, 0, 0);
		if (transp == NULL) {
			syslog(LOG_ERR, "cannot create udp service.");
			exit(1);
		}
		ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_IDLE,
			     rusers_service, NULL);
	} else
		ok = svc_create(rusers_service,
				RUSERSPROG, RUSERSVERS_IDLE, "udp");
	if (!ok) {
		syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s)", (!from_inetd)?"udp":"(inetd)");
		exit(1);
	}
	if (from_inetd)
		ok = svc_reg(transp, RUSERSPROG, RUSERSVERS_ORIG,
			     rusers_service, NULL);
	else
		ok = svc_create(rusers_service,
				RUSERSPROG, RUSERSVERS_ORIG, "udp");
	if (!ok) {
		syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s)", (!from_inetd)?"udp":"(inetd)");
		exit(1);
	}

	svc_run();
	syslog(LOG_ERR, "svc_run returned");
	exit(1);
}

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