475 lines
11 KiB
C
475 lines
11 KiB
C
/* $NetBSD: rusers_proc.c,v 1.18 1998/07/03 11:49:50 mrg Exp $ */
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/*-
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: rusers_proc.c,v 1.18 1998/07/03 11:49:50 mrg Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/time.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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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include <signal.h>
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#include <syslog.h>
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#include <utmp.h>
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#include <rpc/rpc.h>
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#include "rusers_proc.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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#include <rpcsvc/rusers.h> /* New version */
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#include <rpcsvc/rnusers.h> /* Old version */
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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];
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typedef char ut_name_t[UT_NAMESIZE];
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typedef char ut_host_t[UT_HOSTSIZE];
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static struct rusers_utmp utmps[MAXUSERS];
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static struct utmpidle *utmp_idlep[MAXUSERS];
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static struct utmpidle utmp_idle[MAXUSERS];
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static ut_line_t line[MAXUSERS];
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static ut_name_t name[MAXUSERS];
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static ut_host_t host[MAXUSERS];
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extern int from_inetd;
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static u_int getidle __P((char *, char *));
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static int *rusers_num_svc __P((void *, struct svc_req *));
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static utmp_array *do_names_3 __P((int));
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static struct utmpidlearr *do_names_2 __P((int));
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/* XXX */
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struct utmpidlearr *rusersproc_names_2_svc __P((void *, struct svc_req *));
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struct utmpidlearr *rusersproc_allnames_2_svc __P((void *, struct svc_req *));
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#ifdef XIDLE
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static Display *dpy;
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static sigjmp_buf openAbort;
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static int XqueryIdle __P((char *));
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static void abortOpen __P((int));
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static void
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abortOpen(n)
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int n;
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{
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siglongjmp(openAbort, 1);
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}
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static int
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XqueryIdle(display)
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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(10);
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if (!sigsetjmp(openAbort, 0)) {
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if ((dpy = XOpenDisplay(display)) == NULL) {
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syslog(LOG_DEBUG, "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_DEBUG, "%s: unable to get idle time",
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display);
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return (-1);
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}
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} else {
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syslog(LOG_DEBUG, "%s: Xidle extension not loaded",
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display);
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return (-1);
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}
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XCloseDisplay(dpy);
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} else {
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syslog(LOG_DEBUG, "%s: server grabbed for over 10 seconds",
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display);
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return (-1);
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}
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(void) alarm(0);
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(void) signal(SIGALRM, SIG_DFL);
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IdleTime /= 1000;
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return ((IdleTime + 30) / 60);
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}
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#endif /* XIDLE */
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static u_int
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getidle(tty, display)
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char *tty, *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 && strchr(display, ':') != NULL &&
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(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(i386)
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kbd_idle = getidle("kbd", NULL);
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#else
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/*
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* XXX Icky i386 console hack.
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*/
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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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} else {
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snprintf(devname, sizeof 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: %m\n", devname);
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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, 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)
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idle = 0;
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return (idle);
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}
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static int *
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rusers_num_svc(arg, rqstp)
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void *arg;
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struct svc_req *rqstp;
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{
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static int num_users = 0;
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struct utmp usr;
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FILE *ufp;
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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 utmp_array *
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do_names_3(all)
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int all;
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{
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static utmp_array ut;
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struct utmp usr;
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int nusers = 0;
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FILE *ufp;
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memset(&ut, 0, sizeof(ut));
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ut.utmp_array_val = &utmps[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 (NULL);
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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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utmps[nusers].ut_type = RUSERS_USER_PROCESS;
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utmps[nusers].ut_time =
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usr.ut_time;
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utmps[nusers].ut_idle =
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getidle(usr.ut_line, usr.ut_host);
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utmps[nusers].ut_line = line[nusers];
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strncpy(line[nusers], usr.ut_line,
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sizeof(line[nusers]));
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utmps[nusers].ut_user = name[nusers];
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strncpy(name[nusers], usr.ut_name,
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sizeof(name[nusers]));
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utmps[nusers].ut_host = host[nusers];
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strncpy(host[nusers], usr.ut_host,
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sizeof(host[nusers]));
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nusers++;
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}
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ut.utmp_array_len = nusers;
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fclose(ufp);
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return (&ut);
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}
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utmp_array *
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rusersproc_names_3_svc(arg, rqstp)
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void *arg;
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struct svc_req *rqstp;
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{
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return (do_names_3(0));
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}
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utmp_array *
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rusersproc_allnames_3_svc(arg, rqstp)
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void *arg;
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struct svc_req *rqstp;
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{
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return (do_names_3(1));
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}
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static struct utmpidlearr *
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do_names_2(int all)
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{
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static struct utmpidlearr ut;
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struct utmp usr;
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int nusers = 0;
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FILE *ufp;
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bzero((char *)&ut, sizeof(ut));
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ut.uia_arr = utmp_idlep;
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ut.uia_cnt = 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 (NULL);
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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_idlep[nusers] = &utmp_idle[nusers];
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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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strncpy(utmp_idle[nusers].ui_utmp.ut_line, usr.ut_line,
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sizeof(utmp_idle[nusers].ui_utmp.ut_line));
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strncpy(utmp_idle[nusers].ui_utmp.ut_name, usr.ut_name,
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sizeof(utmp_idle[nusers].ui_utmp.ut_name));
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strncpy(utmp_idle[nusers].ui_utmp.ut_host, usr.ut_host,
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sizeof(utmp_idle[nusers].ui_utmp.ut_host));
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nusers++;
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}
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ut.uia_cnt = nusers;
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fclose(ufp);
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return (&ut);
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}
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struct utmpidlearr *
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rusersproc_names_2_svc(arg, rqstp)
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void *arg;
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struct svc_req *rqstp;
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{
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return (do_names_2(0));
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}
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struct utmpidlearr *
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rusersproc_allnames_2_svc(arg, rqstp)
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void *arg;
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struct svc_req *rqstp;
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{
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return (do_names_2(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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xdrproc_t xdr_argument, xdr_result;
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char *(*local) __P((void *, struct svc_req *));
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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 = (xdrproc_t)xdr_void;
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xdr_result = (xdrproc_t)xdr_int;
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switch (rqstp->rq_vers) {
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case RUSERSVERS_3:
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case RUSERSVERS_IDLE:
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local = (char *(*) __P((void *, struct svc_req *)))
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rusers_num_svc;
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break;
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default:
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svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3);
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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_NAMES:
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xdr_argument = (xdrproc_t)xdr_void;
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xdr_result = (xdrproc_t)xdr_utmp_array;
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switch (rqstp->rq_vers) {
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case RUSERSVERS_3:
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local = (char *(*) __P((void *, struct svc_req *)))
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rusersproc_names_3_svc;
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break;
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case RUSERSVERS_IDLE:
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xdr_result = (xdrproc_t)xdr_utmpidlearr;
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local = (char *(*) __P((void *, struct svc_req *)))
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rusersproc_names_2_svc;
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break;
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default:
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svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3);
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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 = (xdrproc_t)xdr_void;
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xdr_result = (xdrproc_t)xdr_utmp_array;
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switch (rqstp->rq_vers) {
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case RUSERSVERS_3:
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local = (char *(*) __P((void *, struct svc_req *)))
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rusersproc_allnames_3_svc;
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break;
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case RUSERSVERS_IDLE:
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xdr_result = (xdrproc_t)xdr_utmpidlearr;
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local = (char *(*) __P((void *, struct svc_req *)))
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rusersproc_allnames_2_svc;
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break;
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default:
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svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3);
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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, (caddr_t)&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, (caddr_t)&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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