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freebsd-skq/libexec/rpc.rusersd/rusers_proc.c
brueffer 73e4798829 Remove the 3rd clause ("advertising clause") of the BSD license as 
permitted by the University of Berkeley on July 22, 1999.

Reviewed by:	imp
MFC after:	1 week
2014-02-17 22:27:32 +00:00

333 lines
7.6 KiB
C
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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. 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[] =
"$FreeBSD$";
#endif /* not lint */
#ifdef DEBUG
#include <errno.h>
#endif
#include <stdio.h>
#include <string.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <syslog.h>
#include <utmpx.h>
#ifdef XIDLE
#include <setjmp.h>
#include <X11/Xlib.h>
#include <X11/extensions/xidle.h>
#endif
#include <rpcsvc/rnusers.h>
#include "extern.h"
#ifndef _PATH_DEV
#define _PATH_DEV "/dev"
#endif
static utmpidle utmp_idle[MAXUSERS];
static utmp old_utmp[MAXUSERS];
static struct utmpx utmp_list[MAXUSERS];
#ifdef XIDLE
static Display *dpy;
static jmp_buf openAbort;
static void
abortOpen(void)
{
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(const char *tty, const char *display __unused)
{
struct stat st;
char ttyname[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(__FreeBSD__)
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(ttyname, "%s/%s", _PATH_DEV, tty);
if (stat(ttyname, &st) < 0) {
#ifdef DEBUG
printf("%s: %s\n", ttyname, strerror(errno));
#endif
return(-1);
}
time(&now);
#ifdef DEBUG
printf("%s: now=%d atime=%d\n", ttyname, now,
st.st_atime);
#endif
idle = now - st.st_atime;
idle = (idle + 30) / 60; /* secs->mins */
}
return(idle);
}
static utmpidlearr *
do_names_2(void)
{
static utmpidlearr ut;
struct utmpx *usr;
int nusers = 0;
memset(&ut, 0, sizeof(ut));
ut.utmpidlearr_val = &utmp_idle[0];
setutxent();
while ((usr = getutxent()) != NULL && nusers < MAXUSERS) {
if (usr->ut_type != USER_PROCESS)
continue;
memcpy(&utmp_list[nusers], usr, sizeof(*usr));
utmp_idle[nusers].ui_utmp.ut_time = usr->ut_tv.tv_sec;
utmp_idle[nusers].ui_idle =
getidle(usr->ut_line, usr->ut_host);
utmp_idle[nusers].ui_utmp.ut_line =
utmp_list[nusers].ut_line;
utmp_idle[nusers].ui_utmp.ut_name =
utmp_list[nusers].ut_user;
utmp_idle[nusers].ui_utmp.ut_host =
utmp_list[nusers].ut_host;
nusers++;
}
endutxent();
ut.utmpidlearr_len = nusers;
return(&ut);
}
static int *
rusers_num(void *argp __unused, struct svc_req *rqstp __unused)
{
static int num_users = 0;
struct utmpx *usr;
setutxent();
while ((usr = getutxent()) != NULL) {
if (usr->ut_type != USER_PROCESS)
continue;
num_users++;
}
endutxent();
return(&num_users);
}
static utmparr *
do_names_1(void)
{
utmpidlearr *utidle;
static utmparr ut;
unsigned int i;
bzero((char *)&ut, sizeof(ut));
utidle = do_names_2();
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_svc(void *argp __unused, struct svc_req *rqstp __unused)
{
return (do_names_2());
}
utmpidlearr *
rusersproc_allnames_2_svc(void *argp __unused, struct svc_req *rqstp __unused)
{
return (do_names_2());
}
utmparr *
rusersproc_names_1_svc(void *argp __unused, struct svc_req *rqstp __unused)
{
return (do_names_1());
}
utmparr *
rusersproc_allnames_1_svc(void *argp __unused, struct svc_req *rqstp __unused)
{
return (do_names_1());
}
typedef void *(*rusersproc_t)(void *, struct svc_req *);
void
rusers_service(struct svc_req *rqstp, SVCXPRT *transp)
{
union {
int fill;
} argument;
char *result;
xdrproc_t xdr_argument, xdr_result;
rusersproc_t local;
switch (rqstp->rq_proc) {
case NULLPROC:
(void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
goto leave;
case RUSERSPROC_NUM:
xdr_argument = (xdrproc_t)xdr_void;
xdr_result = (xdrproc_t)xdr_int;
local = (rusersproc_t)rusers_num;
break;
case RUSERSPROC_NAMES:
xdr_argument = (xdrproc_t)xdr_void;
xdr_result = (xdrproc_t)xdr_utmpidlearr;
switch (rqstp->rq_vers) {
case RUSERSVERS_ORIG:
local = (rusersproc_t)rusersproc_names_1_svc;
break;
case RUSERSVERS_IDLE:
local = (rusersproc_t)rusersproc_names_2_svc;
break;
default:
svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
goto leave;
/*NOTREACHED*/
}
break;
case RUSERSPROC_ALLNAMES:
xdr_argument = (xdrproc_t)xdr_void;
xdr_result = (xdrproc_t)xdr_utmpidlearr;
switch (rqstp->rq_vers) {
case RUSERSVERS_ORIG:
local = (rusersproc_t)rusersproc_allnames_1_svc;
break;
case RUSERSVERS_IDLE:
local = (rusersproc_t)rusersproc_allnames_2_svc;
break;
default:
svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
goto leave;
/*NOTREACHED*/
}
break;
default:
svcerr_noproc(transp);
goto leave;
}
bzero(&argument, sizeof(argument));
if (!svc_getargs(transp, (xdrproc_t)xdr_argument, &argument)) {
svcerr_decode(transp);
goto leave;
}
result = (*local)(&argument, rqstp);
if (result != NULL &&
!svc_sendreply(transp, (xdrproc_t)xdr_result, result)) {
svcerr_systemerr(transp);
}
if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, &argument)) {
syslog(LOG_ERR, "unable to free arguments");
exit(1);
}
leave:
if (from_inetd)
exit(0);
}
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