391 lines
11 KiB
C
391 lines
11 KiB
C
/*-
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* Copyright (c) 1993, John Brezak
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char rcsid[] = "$Id: rusers_proc.c,v 1.3 1994/11/18 23:36:18 ats Exp $";
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#endif /* not lint */
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <utmp.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#ifdef XIDLE
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#include <setjmp.h>
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#include <X11/Xlib.h>
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#include <X11/extensions/xidle.h>
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#endif
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#define utmp rutmp
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#include <rpcsvc/rnusers.h>
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#undef utmp
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#define IGNOREUSER "sleeper"
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#ifdef OSF
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#define _PATH_UTMP UTMP_FILE
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#endif
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#ifndef _PATH_UTMP
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#define _PATH_UTMP "/etc/utmp"
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#endif
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#ifndef _PATH_DEV
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#define _PATH_DEV "/dev"
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#endif
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#ifndef UT_LINESIZE
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#define UT_LINESIZE sizeof(((struct utmp *)0)->ut_line)
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#endif
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#ifndef UT_NAMESIZE
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#define UT_NAMESIZE sizeof(((struct utmp *)0)->ut_name)
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#endif
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#ifndef UT_HOSTSIZE
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#define UT_HOSTSIZE sizeof(((struct utmp *)0)->ut_host)
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#endif
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typedef char ut_line_t[UT_LINESIZE+1];
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typedef char ut_name_t[UT_NAMESIZE+1];
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typedef char ut_host_t[UT_HOSTSIZE+1];
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utmpidle utmp_idle[MAXUSERS];
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rutmp old_utmp[MAXUSERS];
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ut_line_t line[MAXUSERS];
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ut_name_t name[MAXUSERS];
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ut_host_t host[MAXUSERS];
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extern int from_inetd;
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FILE *ufp;
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#ifdef XIDLE
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Display *dpy;
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static jmp_buf openAbort;
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static void
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abortOpen ()
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{
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longjmp (openAbort, 1);
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}
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XqueryIdle(char *display)
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{
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int first_event, first_error;
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Time IdleTime;
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(void) signal (SIGALRM, abortOpen);
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(void) alarm ((unsigned) 10);
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if (!setjmp (openAbort)) {
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if (!(dpy= XOpenDisplay(display))) {
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syslog(LOG_ERR, "Cannot open display %s", display);
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return(-1);
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}
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if (XidleQueryExtension(dpy, &first_event, &first_error)) {
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if (!XGetIdleTime(dpy, &IdleTime)) {
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syslog(LOG_ERR, "%s: Unable to get idle time.", display);
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return(-1);
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}
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}
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else {
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syslog(LOG_ERR, "%s: Xidle extension not loaded.", display);
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return(-1);
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}
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XCloseDisplay(dpy);
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}
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else {
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syslog(LOG_ERR, "%s: Server grabbed for over 10 seconds.", display);
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return(-1);
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}
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(void) signal (SIGALRM, SIG_DFL);
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(void) alarm ((unsigned) 0);
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IdleTime /= 1000;
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return((IdleTime + 30) / 60);
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}
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#endif
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static u_int
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getidle(char *tty, char *display)
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{
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struct stat st;
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char devname[PATH_MAX];
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time_t now;
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u_long idle;
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/*
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* If this is an X terminal or console, then try the
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* XIdle extension
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*/
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#ifdef XIDLE
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if (display && *display && (idle = XqueryIdle(display)) >= 0)
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return(idle);
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#endif
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idle = 0;
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if (*tty == 'X') {
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u_long kbd_idle, mouse_idle;
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#if !defined(__FreeBSD__)
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kbd_idle = getidle("kbd", NULL);
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#else
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kbd_idle = getidle("vga", NULL);
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#endif
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mouse_idle = getidle("mouse", NULL);
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idle = (kbd_idle < mouse_idle)?kbd_idle:mouse_idle;
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}
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else {
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sprintf(devname, "%s/%s", _PATH_DEV, tty);
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if (stat(devname, &st) < 0) {
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#ifdef DEBUG
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printf("%s: %s\n", devname, strerror(errno));
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#endif
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return(-1);
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}
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time(&now);
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#ifdef DEBUG
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printf("%s: now=%d atime=%d\n", devname, now,
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st.st_atime);
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#endif
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idle = now - st.st_atime;
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idle = (idle + 30) / 60; /* secs->mins */
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}
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if (idle < 0) idle = 0;
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return(idle);
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}
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static utmpidlearr *
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do_names_2(int all)
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{
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static utmpidlearr ut;
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struct utmp usr;
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int nusers = 0;
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bzero((char *)&ut, sizeof(ut));
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ut.utmpidlearr_val = &utmp_idle[0];
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ufp = fopen(_PATH_UTMP, "r");
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if (!ufp) {
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syslog(LOG_ERR, "%m");
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return(&ut);
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}
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/* only entries with both name and line fields */
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while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 &&
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nusers < MAXUSERS)
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if (*usr.ut_name && *usr.ut_line &&
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strncmp(usr.ut_name, IGNOREUSER,
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sizeof(usr.ut_name))
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#ifdef OSF
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&& usr.ut_type == USER_PROCESS
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#endif
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) {
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utmp_idle[nusers].ui_utmp.ut_time =
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usr.ut_time;
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utmp_idle[nusers].ui_idle =
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getidle(usr.ut_line, usr.ut_host);
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utmp_idle[nusers].ui_utmp.ut_line = line[nusers];
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strncpy(line[nusers], usr.ut_line, UT_LINESIZE);
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utmp_idle[nusers].ui_utmp.ut_name = name[nusers];
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strncpy(name[nusers], usr.ut_name, UT_NAMESIZE);
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utmp_idle[nusers].ui_utmp.ut_host = host[nusers];
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strncpy(host[nusers], usr.ut_host, UT_HOSTSIZE);
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/* Make sure entries are NUL terminated */
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line[nusers][UT_LINESIZE] =
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name[nusers][UT_NAMESIZE] =
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host[nusers][UT_HOSTSIZE] = '\0';
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nusers++;
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}
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ut.utmpidlearr_len = nusers;
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fclose(ufp);
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return(&ut);
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}
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int *
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rusers_num()
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{
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static int num_users = 0;
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struct utmp usr;
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ufp = fopen(_PATH_UTMP, "r");
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if (!ufp) {
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syslog(LOG_ERR, "%m");
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return(0);
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}
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/* only entries with both name and line fields */
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while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1)
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if (*usr.ut_name && *usr.ut_line &&
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strncmp(usr.ut_name, IGNOREUSER,
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sizeof(usr.ut_name))
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#ifdef OSF
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&& usr.ut_type == USER_PROCESS
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#endif
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) {
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num_users++;
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}
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fclose(ufp);
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return(&num_users);
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}
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static utmparr *
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do_names_1(int all)
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{
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utmpidlearr *utidle;
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static utmparr ut;
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int i;
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bzero((char *)&ut, sizeof(ut));
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utidle = do_names_2(all);
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if (utidle) {
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ut.utmparr_len = utidle->utmpidlearr_len;
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ut.utmparr_val = &old_utmp[0];
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for (i = 0; i < ut.utmparr_len; i++)
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bcopy(&utmp_idle[i].ui_utmp, &old_utmp[i],
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sizeof(old_utmp[0]));
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}
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return(&ut);
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}
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utmpidlearr *
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rusersproc_names_2()
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{
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return(do_names_2(0));
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}
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utmpidlearr *
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rusersproc_allnames_2()
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{
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return(do_names_2(1));
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}
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utmparr *
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rusersproc_names_1()
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{
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return(do_names_1(0));
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}
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utmparr *
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rusersproc_allnames_1()
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{
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return(do_names_1(1));
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}
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void
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rusers_service(rqstp, transp)
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struct svc_req *rqstp;
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SVCXPRT *transp;
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{
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union {
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int fill;
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} argument;
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char *result;
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bool_t (*xdr_argument)(), (*xdr_result)();
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char *(*local)();
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switch (rqstp->rq_proc) {
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case NULLPROC:
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(void)svc_sendreply(transp, xdr_void, (char *)NULL);
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goto leave;
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case RUSERSPROC_NUM:
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xdr_argument = xdr_void;
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xdr_result = xdr_int;
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local = (char *(*)()) rusers_num;
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break;
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case RUSERSPROC_NAMES:
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xdr_argument = xdr_void;
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xdr_result = xdr_utmpidlearr;
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switch (rqstp->rq_vers) {
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case RUSERSVERS_ORIG:
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local = (char *(*)()) rusersproc_names_1;
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break;
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case RUSERSVERS_IDLE:
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local = (char *(*)()) rusersproc_names_2;
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break;
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default:
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svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
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goto leave;
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/*NOTREACHED*/
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}
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break;
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case RUSERSPROC_ALLNAMES:
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xdr_argument = xdr_void;
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xdr_result = xdr_utmpidlearr;
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switch (rqstp->rq_vers) {
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case RUSERSVERS_ORIG:
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local = (char *(*)()) rusersproc_allnames_1;
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break;
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case RUSERSVERS_IDLE:
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local = (char *(*)()) rusersproc_allnames_2;
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break;
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default:
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svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
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goto leave;
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/*NOTREACHED*/
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}
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break;
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default:
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svcerr_noproc(transp);
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goto leave;
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}
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bzero((char *)&argument, sizeof(argument));
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if (!svc_getargs(transp, xdr_argument, &argument)) {
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svcerr_decode(transp);
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goto leave;
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}
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result = (*local)(&argument, rqstp);
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if (result != NULL && !svc_sendreply(transp, xdr_result, result)) {
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svcerr_systemerr(transp);
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}
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if (!svc_freeargs(transp, xdr_argument, &argument)) {
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(void)fprintf(stderr, "unable to free arguments\n");
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exit(1);
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}
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leave:
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if (from_inetd)
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exit(0);
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}
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