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csgr 1994-08-28 14:53:45 +00:00
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16
libexec/rpc.rusersd/Makefile Normal file
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# $Id: Makefile,v 1.2 1993/11/10 03:46:04 smace Exp $
PROG = rpc.rusersd
SRCS = rusersd.c rusers_proc.c
MAN8 = rpc.rusersd.8
DPADD= ${LIBRPCSVC} ${LIBUTIL}
LDADD= -lrpcsvc -lutil
.if exists(/usr/include/X11/extensions/xidle.h)
CFLAGS+= -DXIDLE
LDADD+= -L/usr/X386/lib -lXext -lX11
.endif
.include <bsd.prog.mk>

64
libexec/rpc.rusersd/rpc.rusersd.8 Normal file
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.\" -*- nroff -*-
.\"
.\" Copyright (c) 1985, 1991 The Regents of the University of California.
.\" 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.
.\"
.\" $Id: rpc.rusersd.8,v 1.1 1993/09/16 00:34:43 jtc Exp $
.\"
.Dd June 7, 1993
.Dt RPC.RUSERSD 8
.Os BSD 4.3
.Sh NAME
.Nm rpc.rusersd
.Nd logged in users server
.Sh SYNOPSIS
.Nm /usr/libexec/rpc.rusersd
.Sh DESCRIPTION
.Nm rpc.rusersd
is a server which returns information about users
currently logged in to the system.
.Pp
The currently logged in users are queried using the
.Xr rusers 1
command.
The
.Nm rpc.rusersd
daemon is normally invoked by
.Xr inetd 8 .
.Pp
.Nm rpc.rusersd
uses an RPC protocol defined in
.Pa /usr/include/rpcsvc/rnusers.x .
.Sh SEE ALSO
.Xr rusers 1 ,
.Xr who 1 ,
.Xr w 1 ,
.Xr inetd 8

390
libexec/rpc.rusersd/rusers_proc.c Normal file
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/*-
* 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 char rcsid[] = "$Id: rusers_proc.c,v 1.2 1994/03/06 02:07:58 jkh Exp $";
#endif /* not lint */
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <utmp.h>
#include <stdio.h>
#include <syslog.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <sys/stat.h>
#ifdef XIDLE
#include <setjmp.h>
#include <X11/Xlib.h>
#include <X11/extensions/xidle.h>
#endif
#define utmp rutmp
#include <rpcsvc/rnusers.h>
#undef utmp
#define IGNOREUSER "sleeper"
#ifdef OSF
#define _PATH_UTMP UTMP_FILE
#endif
#ifndef _PATH_UTMP
#define _PATH_UTMP "/etc/utmp"
#endif
#ifndef _PATH_DEV
#define _PATH_DEV "/dev"
#endif
#ifndef UT_LINESIZE
#define UT_LINESIZE sizeof(((struct utmp *)0)->ut_line)
#endif
#ifndef UT_NAMESIZE
#define UT_NAMESIZE sizeof(((struct utmp *)0)->ut_name)
#endif
#ifndef UT_HOSTSIZE
#define UT_HOSTSIZE sizeof(((struct utmp *)0)->ut_host)
#endif
typedef char ut_line_t[UT_LINESIZE+1];
typedef char ut_name_t[UT_NAMESIZE+1];
typedef char ut_host_t[UT_HOSTSIZE+1];
utmpidle utmp_idle[MAXUSERS];
rutmp old_utmp[MAXUSERS];
ut_line_t line[MAXUSERS];
ut_name_t name[MAXUSERS];
ut_host_t host[MAXUSERS];
extern int from_inetd;
FILE *ufp;
#ifdef XIDLE
Display *dpy;
static jmp_buf openAbort;
static void
abortOpen ()
{
longjmp (openAbort, 1);
}
XqueryIdle(char *display)
{
int first_event, first_error;
Time IdleTime;
(void) signal (SIGALRM, abortOpen);
(void) alarm ((unsigned) 10);
if (!setjmp (openAbort)) {
if (!(dpy= XOpenDisplay(display))) {
syslog(LOG_ERR, "Cannot open display %s", display);
return(-1);
}
if (XidleQueryExtension(dpy, &first_event, &first_error)) {
if (!XGetIdleTime(dpy, &IdleTime)) {
syslog(LOG_ERR, "%s: Unable to get idle time.", display);
return(-1);
}
}
else {
syslog(LOG_ERR, "%s: Xidle extension not loaded.", display);
return(-1);
}
XCloseDisplay(dpy);
}
else {
syslog(LOG_ERR, "%s: Server grabbed for over 10 seconds.", display);
return(-1);
}
(void) signal (SIGALRM, SIG_DFL);
(void) alarm ((unsigned) 0);
IdleTime /= 1000;
return((IdleTime + 30) / 60);
}
#endif
static u_int
getidle(char *tty, char *display)
{
struct stat st;
char devname[PATH_MAX];
time_t now;
u_long idle;
/*
* If this is an X terminal or console, then try the
* XIdle extension
*/
#ifdef XIDLE
if (display && *display && (idle = XqueryIdle(display)) >= 0)
return(idle);
#endif
idle = 0;
if (*tty == 'X') {
u_long kbd_idle, mouse_idle;
#if !defined(__386BSD__)
kbd_idle = getidle("kbd", NULL);
#else
kbd_idle = getidle("vga", NULL);
#endif
mouse_idle = getidle("mouse", NULL);
idle = (kbd_idle < mouse_idle)?kbd_idle:mouse_idle;
}
else {
sprintf(devname, "%s/%s", _PATH_DEV, tty);
if (stat(devname, &st) < 0) {
#ifdef DEBUG
printf("%s: %s\n", devname, strerror(errno));
#endif
return(-1);
}
time(&now);
#ifdef DEBUG
printf("%s: now=%d atime=%d\n", devname, now,
st.st_atime);
#endif
idle = now - st.st_atime;
idle = (idle + 30) / 60; /* secs->mins */
}
if (idle < 0) idle = 0;
return(idle);
}
static utmpidlearr *
do_names_2(int all)
{
static utmpidlearr ut;
struct utmp usr;
int nusers = 0;
bzero((char *)&ut, sizeof(ut));
ut.utmpidlearr_val = &utmp_idle[0];
ufp = fopen(_PATH_UTMP, "r");
if (!ufp) {
syslog(LOG_ERR, "%m");
return(&ut);
}
/* only entries with both name and line fields */
while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 &&
nusers < MAXUSERS)
if (*usr.ut_name && *usr.ut_line &&
strncmp(usr.ut_name, IGNOREUSER,
sizeof(usr.ut_name))
#ifdef OSF
&& usr.ut_type == USER_PROCESS
#endif
) {
utmp_idle[nusers].ui_utmp.ut_time =
usr.ut_time;
utmp_idle[nusers].ui_idle =
getidle(usr.ut_line, usr.ut_host);
utmp_idle[nusers].ui_utmp.ut_line = line[nusers];
strncpy(line[nusers], usr.ut_line, UT_LINESIZE);
utmp_idle[nusers].ui_utmp.ut_name = name[nusers];
strncpy(name[nusers], usr.ut_name, UT_NAMESIZE);
utmp_idle[nusers].ui_utmp.ut_host = host[nusers];
strncpy(host[nusers], usr.ut_host, UT_HOSTSIZE);
/* Make sure entries are NUL terminated */
line[nusers][UT_LINESIZE] =
name[nusers][UT_NAMESIZE] =
host[nusers][UT_HOSTSIZE] = '\0';
nusers++;
}
ut.utmpidlearr_len = nusers;
fclose(ufp);
return(&ut);
}
int *
rusers_num()
{
int num_users = 0;
struct utmp usr;
ufp = fopen(_PATH_UTMP, "r");
if (!ufp) {
syslog(LOG_ERR, "%m");
return(0);
}
/* only entries with both name and line fields */
while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1)
if (*usr.ut_name && *usr.ut_line &&
strncmp(usr.ut_name, IGNOREUSER,
sizeof(usr.ut_name))
#ifdef OSF
&& usr.ut_type == USER_PROCESS
#endif
) {
num_users++;
}
fclose(ufp);
return(&num_users);
}
static utmparr *
do_names_1(int all)
{
utmpidlearr *utidle;
utmparr ut;
int i;
bzero((char *)&ut, sizeof(ut));
utidle = do_names_2(all);
if (utidle) {
ut.utmparr_len = utidle->utmpidlearr_len;
ut.utmparr_val = &old_utmp[0];
for (i = 0; i < ut.utmparr_len; i++)
bcopy(&utmp_idle[i].ui_utmp, &old_utmp[i],
sizeof(old_utmp[0]));
}
return(&ut);
}
utmpidlearr *
rusersproc_names_2()
{
return(do_names_2(0));
}
utmpidlearr *
rusersproc_allnames_2()
{
return(do_names_2(1));
}
utmparr *
rusersproc_names_1()
{
return(do_names_1(0));
}
utmparr *
rusersproc_allnames_1()
{
return(do_names_1(1));
}
void
rusers_service(rqstp, transp)
struct svc_req *rqstp;
SVCXPRT *transp;
{
union {
int fill;
} argument;
char *result;
bool_t (*xdr_argument)(), (*xdr_result)();
char *(*local)();
switch (rqstp->rq_proc) {
case NULLPROC:
(void)svc_sendreply(transp, xdr_void, (char *)NULL);
goto leave;
case RUSERSPROC_NUM:
xdr_argument = xdr_void;
xdr_result = xdr_int;
local = (char *(*)()) rusers_num;
break;
case RUSERSPROC_NAMES:
xdr_argument = xdr_void;
xdr_result = xdr_utmpidlearr;
switch (rqstp->rq_vers) {
case RUSERSVERS_ORIG:
local = (char *(*)()) rusersproc_names_1;
break;
case RUSERSVERS_IDLE:
local = (char *(*)()) rusersproc_names_2;
break;
default:
svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
goto leave;
/*NOTREACHED*/
}
break;
case RUSERSPROC_ALLNAMES:
xdr_argument = xdr_void;
xdr_result = xdr_utmpidlearr;
switch (rqstp->rq_vers) {
case RUSERSVERS_ORIG:
local = (char *(*)()) rusersproc_allnames_1;
break;
case RUSERSVERS_IDLE:
local = (char *(*)()) rusersproc_allnames_2;
break;
default:
svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
goto leave;
/*NOTREACHED*/
}
break;
default:
svcerr_noproc(transp);
goto leave;
}
bzero((char *)&argument, sizeof(argument));
if (!svc_getargs(transp, xdr_argument, &argument)) {
svcerr_decode(transp);
goto leave;
}
result = (*local)(&argument, rqstp);
if (result != NULL && !svc_sendreply(transp, xdr_result, result)) {
svcerr_systemerr(transp);
}
if (!svc_freeargs(transp, xdr_argument, &argument)) {
(void)fprintf(stderr, "unable to free arguments\n");
exit(1);
}
leave:
if (from_inetd)
exit(0);
}

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libexec/rpc.rusersd/rusersd.c Normal file
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/*-
* 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 char rcsid[] = "$Id: rusersd.c,v 1.1 1993/09/16 00:34:49 jtc Exp $";
#endif /* not lint */
#include <stdio.h>
#include <rpc/rpc.h>
#include <signal.h>
#include <syslog.h>
#define utmp rutmp
#include <rpcsvc/rnusers.h>
#undef utmp
extern void rusers_service();
int from_inetd = 1;
void
cleanup()
{
(void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
(void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
exit(0);
}
main(argc, argv)
int argc;
char *argv[];
{
SVCXPRT *transp;
int sock = 0;
int proto = 0;
struct sockaddr_in from;
int fromlen;
/*
* See if inetd started us
*/
if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
from_inetd = 0;
sock = RPC_ANYSOCK;
proto = IPPROTO_UDP;
}
if (!from_inetd) {
daemon(0, 0);
(void) pmap_unset(RUSERSPROG, RUSERSVERS_IDLE);
(void) pmap_unset(RUSERSPROG, RUSERSVERS_ORIG);
(void) signal(SIGINT, cleanup);
(void) signal(SIGTERM, cleanup);
(void) signal(SIGHUP, cleanup);
}
openlog("rpc.rusersd", LOG_CONS|LOG_PID, LOG_DAEMON);
transp = svcudp_create(sock);
if (transp == NULL) {
syslog(LOG_ERR, "cannot create udp service.");
exit(1);
}
if (!svc_register(transp, RUSERSPROG, RUSERSVERS_IDLE, rusers_service, proto)) {
syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_IDLE, %s).", proto?"udp":"(inetd)");
exit(1);
}
if (!svc_register(transp, RUSERSPROG, RUSERSVERS_ORIG, rusers_service, proto)) {
syslog(LOG_ERR, "unable to register (RUSERSPROG, RUSERSVERS_ORIG, %s).", proto?"udp":"(inetd)");
exit(1);
}
svc_run();
syslog(LOG_ERR, "svc_run returned");
exit(1);
}