usr/src/usr.bin/rwho/rwho.c

/*
 * Copyright (c) 1983 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)rwho.c	5.4 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/dir.h>
#include <sys/file.h>
#include <protocols/rwhod.h>
#include <stdio.h>

DIR	*dirp;

struct	whod wd;
int	utmpcmp();
#define	NUSERS	1000
struct	myutmp {
	char	myhost[MAXHOSTNAMELEN];
	int	myidle;
	struct	outmp myutmp;
} myutmp[NUSERS];
int	nusers;

#define	WHDRSIZE	(sizeof (wd) - sizeof (wd.wd_we))
/*
 * this macro should be shared with ruptime.
 */
#define	down(w,now)	((now) - (w)->wd_recvtime > 11 * 60)

char	*ctime(), *strcpy();
time_t	now;
int	aflg;

main(argc, argv)
	int argc;
	char **argv;
{
	extern char *optarg;
	extern int optind;
	int ch;
	struct direct *dp;
	int cc, width;
	register struct whod *w = &wd;
	register struct whoent *we;
	register struct myutmp *mp;
	int f, n, i;
	time_t time();

	while ((ch = getopt(argc, argv, "a")) != EOF)
		switch((char)ch) {
		case 'a':
			aflg = 1;
			break;
		case '?':
		default:
			fprintf(stderr, "usage: rwho [-a]\n");
			exit(1);
		}
	if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) {
		perror(_PATH_RWHODIR);
		exit(1);
	}
	mp = myutmp;
	(void)time(&now);
	while (dp = readdir(dirp)) {
		if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
			continue;
		f = open(dp->d_name, O_RDONLY);
		if (f < 0)
			continue;
		cc = read(f, (char *)&wd, sizeof (struct whod));
		if (cc < WHDRSIZE) {
			(void) close(f);
			continue;
		}
		if (down(w,now)) {
			(void) close(f);
			continue;
		}
		cc -= WHDRSIZE;
		we = w->wd_we;
		for (n = cc / sizeof (struct whoent); n > 0; n--) {
			if (aflg == 0 && we->we_idle >= 60*60) {
				we++;
				continue;
			}
			if (nusers >= NUSERS) {
				printf("too many users\n");
				exit(1);
			}
			mp->myutmp = we->we_utmp; mp->myidle = we->we_idle;
			(void) strcpy(mp->myhost, w->wd_hostname);
			nusers++; we++; mp++;
		}
		(void) close(f);
	}
	qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp);
	mp = myutmp;
	width = 0;
	for (i = 0; i < nusers; i++) {
		int j = strlen(mp->myhost) + 1 + strlen(mp->myutmp.out_line);
		if (j > width)
			width = j;
		mp++;
	}
	mp = myutmp;
	for (i = 0; i < nusers; i++) {
		char buf[BUFSIZ];
		(void)sprintf(buf, "%s:%s", mp->myhost, mp->myutmp.out_line);
		printf("%-8.8s %-*s %.12s",
		   mp->myutmp.out_name,
		   width,
		   buf,
		   ctime((time_t *)&mp->myutmp.out_time)+4);
		mp->myidle /= 60;
		if (mp->myidle) {
			if (aflg) {
				if (mp->myidle >= 100*60)
					mp->myidle = 100*60 - 1;
				if (mp->myidle >= 60)
					printf(" %2d", mp->myidle / 60);
				else
					printf("   ");
			} else
				printf(" ");
			printf(":%02d", mp->myidle % 60);
		}
		printf("\n");
		mp++;
	}
	exit(0);
}

utmpcmp(u1, u2)
	struct myutmp *u1, *u2;
{
	int rc;

	rc = strncmp(u1->myutmp.out_name, u2->myutmp.out_name, 8);
	if (rc)
		return (rc);
	rc = strncmp(u1->myhost, u2->myhost, 8);
	if (rc)
		return (rc);
	return (strncmp(u1->myutmp.out_line, u2->myutmp.out_line, 8));
}
Commit	Line	Data
	1	/*
	2	* Copyright (c) 1983 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	16	*/
	17
	18	#ifndef lint
	19	char copyright[] =
	20	"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
	21	All rights reserved.\n";
	22	#endif /* not lint */
	23
	24	#ifndef lint
	25	static char sccsid[] = "@(#)rwho.c 5.4 (Berkeley) %G%";
	26	#endif /* not lint */
	27
	28	#include <sys/param.h>
	29	#include <sys/dir.h>
	30	#include <sys/file.h>
	31	#include <protocols/rwhod.h>
	32	#include <stdio.h>
	33
	34	DIR *dirp;
	35
	36	struct whod wd;
	37	int utmpcmp();
	38	#define NUSERS 1000
	39	struct myutmp {
	40	char myhost[MAXHOSTNAMELEN];
	41	int myidle;
	42	struct outmp myutmp;
	43	} myutmp[NUSERS];
	44	int nusers;
	45
	46	#define WHDRSIZE (sizeof (wd) - sizeof (wd.wd_we))
	47	/*
	48	* this macro should be shared with ruptime.
	49	*/
	50	#define down(w,now) ((now) - (w)->wd_recvtime > 11 * 60)
	51
	52	char ctime(), strcpy();
	53	time_t now;
	54	int aflg;
	55
	56	main(argc, argv)
	57	int argc;
	58	char **argv;
	59	{
	60	extern char *optarg;
	61	extern int optind;
	62	int ch;
	63	struct direct *dp;
	64	int cc, width;
	65	register struct whod *w = &wd;
	66	register struct whoent *we;
	67	register struct myutmp *mp;
	68	int f, n, i;
	69	time_t time();
	70
	71	while ((ch = getopt(argc, argv, "a")) != EOF)
	72	switch((char)ch) {
	73	case 'a':
	74	aflg = 1;
	75	break;
	76	case '?':
	77	default:
	78	fprintf(stderr, "usage: rwho [-a]\n");
	79	exit(1);
	80	}
	81	if (chdir(_PATH_RWHODIR) \|\| (dirp = opendir(".")) == NULL) {
	82	perror(_PATH_RWHODIR);
	83	exit(1);
	84	}
	85	mp = myutmp;
	86	(void)time(&now);
	87	while (dp = readdir(dirp)) {
	88	if (dp->d_ino == 0 \|\| strncmp(dp->d_name, "whod.", 5))
	89	continue;
	90	f = open(dp->d_name, O_RDONLY);
	91	if (f < 0)
	92	continue;
	93	cc = read(f, (char *)&wd, sizeof (struct whod));
	94	if (cc < WHDRSIZE) {
	95	(void) close(f);
	96	continue;
	97	}
	98	if (down(w,now)) {
	99	(void) close(f);
	100	continue;
	101	}
	102	cc -= WHDRSIZE;
	103	we = w->wd_we;
	104	for (n = cc / sizeof (struct whoent); n > 0; n--) {
	105	if (aflg == 0 && we->we_idle >= 60*60) {
	106	we++;
	107	continue;
	108	}
	109	if (nusers >= NUSERS) {
	110	printf("too many users\n");
	111	exit(1);
	112	}
	113	mp->myutmp = we->we_utmp; mp->myidle = we->we_idle;
	114	(void) strcpy(mp->myhost, w->wd_hostname);
	115	nusers++; we++; mp++;
	116	}
	117	(void) close(f);
	118	}
	119	qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp);
	120	mp = myutmp;
	121	width = 0;
	122	for (i = 0; i < nusers; i++) {
	123	int j = strlen(mp->myhost) + 1 + strlen(mp->myutmp.out_line);
	124	if (j > width)
	125	width = j;
	126	mp++;
	127	}
	128	mp = myutmp;
	129	for (i = 0; i < nusers; i++) {
	130	char buf[BUFSIZ];
	131	(void)sprintf(buf, "%s:%s", mp->myhost, mp->myutmp.out_line);
	132	printf("%-8.8s %-*s %.12s",
	133	mp->myutmp.out_name,
	134	width,
	135	buf,
	136	ctime((time_t *)&mp->myutmp.out_time)+4);
	137	mp->myidle /= 60;
	138	if (mp->myidle) {
	139	if (aflg) {
	140	if (mp->myidle >= 100*60)
	141	mp->myidle = 100*60 - 1;
	142	if (mp->myidle >= 60)
	143	printf(" %2d", mp->myidle / 60);
	144	else
	145	printf(" ");
	146	} else
	147	printf(" ");
	148	printf(":%02d", mp->myidle % 60);
	149	}
	150	printf("\n");
	151	mp++;
	152	}
	153	exit(0);
	154	}
	155
	156	utmpcmp(u1, u2)
	157	struct myutmp u1, u2;
	158	{
	159	int rc;
	160
	161	rc = strncmp(u1->myutmp.out_name, u2->myutmp.out_name, 8);
	162	if (rc)
	163	return (rc);
	164	rc = strncmp(u1->myhost, u2->myhost, 8);
	165	if (rc)
	166	return (rc);
	167	return (strncmp(u1->myutmp.out_line, u2->myutmp.out_line, 8));
	168	}