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rwho.c revision 1.2
      1  1.1      cgd /*
      2  1.1      cgd  * Copyright (c) 1983 The Regents of the University of California.
      3  1.1      cgd  * All rights reserved.
      4  1.1      cgd  *
      5  1.1      cgd  * Redistribution and use in source and binary forms, with or without
      6  1.1      cgd  * modification, are permitted provided that the following conditions
      7  1.1      cgd  * are met:
      8  1.1      cgd  * 1. Redistributions of source code must retain the above copyright
      9  1.1      cgd  *    notice, this list of conditions and the following disclaimer.
     10  1.1      cgd  * 2. Redistributions in binary form must reproduce the above copyright
     11  1.1      cgd  *    notice, this list of conditions and the following disclaimer in the
     12  1.1      cgd  *    documentation and/or other materials provided with the distribution.
     13  1.1      cgd  * 3. All advertising materials mentioning features or use of this software
     14  1.1      cgd  *    must display the following acknowledgement:
     15  1.1      cgd  *	This product includes software developed by the University of
     16  1.1      cgd  *	California, Berkeley and its contributors.
     17  1.1      cgd  * 4. Neither the name of the University nor the names of its contributors
     18  1.1      cgd  *    may be used to endorse or promote products derived from this software
     19  1.1      cgd  *    without specific prior written permission.
     20  1.1      cgd  *
     21  1.1      cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  1.1      cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  1.1      cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  1.1      cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  1.1      cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  1.1      cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  1.1      cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  1.1      cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  1.1      cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  1.1      cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  1.1      cgd  * SUCH DAMAGE.
     32  1.1      cgd  */
     33  1.1      cgd 
     34  1.1      cgd #ifndef lint
     35  1.1      cgd char copyright[] =
     36  1.1      cgd "@(#) Copyright (c) 1983 The Regents of the University of California.\n\
     37  1.1      cgd  All rights reserved.\n";
     38  1.1      cgd #endif /* not lint */
     39  1.1      cgd 
     40  1.1      cgd #ifndef lint
     41  1.2  mycroft /*static char sccsid[] = "from: @(#)rwho.c	5.5 (Berkeley) 6/1/90";*/
     42  1.2  mycroft static char rcsid[] = "$Id: rwho.c,v 1.2 1993/08/01 18:08:45 mycroft Exp $";
     43  1.1      cgd #endif /* not lint */
     44  1.1      cgd 
     45  1.1      cgd #include <sys/param.h>
     46  1.1      cgd #include <sys/dir.h>
     47  1.1      cgd #include <sys/file.h>
     48  1.1      cgd #include <protocols/rwhod.h>
     49  1.1      cgd #include <stdio.h>
     50  1.1      cgd 
     51  1.1      cgd DIR	*dirp;
     52  1.1      cgd 
     53  1.1      cgd struct	whod wd;
     54  1.1      cgd int	utmpcmp();
     55  1.1      cgd #define	NUSERS	1000
     56  1.1      cgd struct	myutmp {
     57  1.1      cgd 	char	myhost[MAXHOSTNAMELEN];
     58  1.1      cgd 	int	myidle;
     59  1.1      cgd 	struct	outmp myutmp;
     60  1.1      cgd } myutmp[NUSERS];
     61  1.1      cgd int	nusers;
     62  1.1      cgd 
     63  1.1      cgd #define	WHDRSIZE	(sizeof (wd) - sizeof (wd.wd_we))
     64  1.1      cgd /*
     65  1.1      cgd  * this macro should be shared with ruptime.
     66  1.1      cgd  */
     67  1.1      cgd #define	down(w,now)	((now) - (w)->wd_recvtime > 11 * 60)
     68  1.1      cgd 
     69  1.1      cgd char	*ctime(), *strcpy();
     70  1.1      cgd time_t	now;
     71  1.1      cgd int	aflg;
     72  1.1      cgd 
     73  1.1      cgd main(argc, argv)
     74  1.1      cgd 	int argc;
     75  1.1      cgd 	char **argv;
     76  1.1      cgd {
     77  1.1      cgd 	extern char *optarg;
     78  1.1      cgd 	extern int optind;
     79  1.1      cgd 	int ch;
     80  1.1      cgd 	struct direct *dp;
     81  1.1      cgd 	int cc, width;
     82  1.1      cgd 	register struct whod *w = &wd;
     83  1.1      cgd 	register struct whoent *we;
     84  1.1      cgd 	register struct myutmp *mp;
     85  1.1      cgd 	int f, n, i;
     86  1.1      cgd 	time_t time();
     87  1.1      cgd 
     88  1.1      cgd 	while ((ch = getopt(argc, argv, "a")) != EOF)
     89  1.1      cgd 		switch((char)ch) {
     90  1.1      cgd 		case 'a':
     91  1.1      cgd 			aflg = 1;
     92  1.1      cgd 			break;
     93  1.1      cgd 		case '?':
     94  1.1      cgd 		default:
     95  1.1      cgd 			fprintf(stderr, "usage: rwho [-a]\n");
     96  1.1      cgd 			exit(1);
     97  1.1      cgd 		}
     98  1.1      cgd 	if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) {
     99  1.1      cgd 		perror(_PATH_RWHODIR);
    100  1.1      cgd 		exit(1);
    101  1.1      cgd 	}
    102  1.1      cgd 	mp = myutmp;
    103  1.1      cgd 	(void)time(&now);
    104  1.1      cgd 	while (dp = readdir(dirp)) {
    105  1.1      cgd 		if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
    106  1.1      cgd 			continue;
    107  1.1      cgd 		f = open(dp->d_name, O_RDONLY);
    108  1.1      cgd 		if (f < 0)
    109  1.1      cgd 			continue;
    110  1.1      cgd 		cc = read(f, (char *)&wd, sizeof (struct whod));
    111  1.1      cgd 		if (cc < WHDRSIZE) {
    112  1.1      cgd 			(void) close(f);
    113  1.1      cgd 			continue;
    114  1.1      cgd 		}
    115  1.1      cgd 		if (down(w,now)) {
    116  1.1      cgd 			(void) close(f);
    117  1.1      cgd 			continue;
    118  1.1      cgd 		}
    119  1.1      cgd 		cc -= WHDRSIZE;
    120  1.1      cgd 		we = w->wd_we;
    121  1.1      cgd 		for (n = cc / sizeof (struct whoent); n > 0; n--) {
    122  1.1      cgd 			if (aflg == 0 && we->we_idle >= 60*60) {
    123  1.1      cgd 				we++;
    124  1.1      cgd 				continue;
    125  1.1      cgd 			}
    126  1.1      cgd 			if (nusers >= NUSERS) {
    127  1.1      cgd 				printf("too many users\n");
    128  1.1      cgd 				exit(1);
    129  1.1      cgd 			}
    130  1.1      cgd 			mp->myutmp = we->we_utmp; mp->myidle = we->we_idle;
    131  1.1      cgd 			(void) strcpy(mp->myhost, w->wd_hostname);
    132  1.1      cgd 			nusers++; we++; mp++;
    133  1.1      cgd 		}
    134  1.1      cgd 		(void) close(f);
    135  1.1      cgd 	}
    136  1.1      cgd 	qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp);
    137  1.1      cgd 	mp = myutmp;
    138  1.1      cgd 	width = 0;
    139  1.1      cgd 	for (i = 0; i < nusers; i++) {
    140  1.1      cgd 		int j = strlen(mp->myhost) + 1 + strlen(mp->myutmp.out_line);
    141  1.1      cgd 		if (j > width)
    142  1.1      cgd 			width = j;
    143  1.1      cgd 		mp++;
    144  1.1      cgd 	}
    145  1.1      cgd 	mp = myutmp;
    146  1.1      cgd 	for (i = 0; i < nusers; i++) {
    147  1.1      cgd 		char buf[BUFSIZ];
    148  1.1      cgd 		(void)sprintf(buf, "%s:%s", mp->myhost, mp->myutmp.out_line);
    149  1.1      cgd 		printf("%-8.8s %-*s %.12s",
    150  1.1      cgd 		   mp->myutmp.out_name,
    151  1.1      cgd 		   width,
    152  1.1      cgd 		   buf,
    153  1.1      cgd 		   ctime((time_t *)&mp->myutmp.out_time)+4);
    154  1.1      cgd 		mp->myidle /= 60;
    155  1.1      cgd 		if (mp->myidle) {
    156  1.1      cgd 			if (aflg) {
    157  1.1      cgd 				if (mp->myidle >= 100*60)
    158  1.1      cgd 					mp->myidle = 100*60 - 1;
    159  1.1      cgd 				if (mp->myidle >= 60)
    160  1.1      cgd 					printf(" %2d", mp->myidle / 60);
    161  1.1      cgd 				else
    162  1.1      cgd 					printf("   ");
    163  1.1      cgd 			} else
    164  1.1      cgd 				printf(" ");
    165  1.1      cgd 			printf(":%02d", mp->myidle % 60);
    166  1.1      cgd 		}
    167  1.1      cgd 		printf("\n");
    168  1.1      cgd 		mp++;
    169  1.1      cgd 	}
    170  1.1      cgd 	exit(0);
    171  1.1      cgd }
    172  1.1      cgd 
    173  1.1      cgd utmpcmp(u1, u2)
    174  1.1      cgd 	struct myutmp *u1, *u2;
    175  1.1      cgd {
    176  1.1      cgd 	int rc;
    177  1.1      cgd 
    178  1.1      cgd 	rc = strncmp(u1->myutmp.out_name, u2->myutmp.out_name, 8);
    179  1.1      cgd 	if (rc)
    180  1.1      cgd 		return (rc);
    181  1.1      cgd 	rc = strncmp(u1->myhost, u2->myhost, 8);
    182  1.1      cgd 	if (rc)
    183  1.1      cgd 		return (rc);
    184  1.1      cgd 	return (strncmp(u1->myutmp.out_line, u2->myutmp.out_line, 8));
    185  1.1      cgd }
    186