예제 #1
0
int
main(int argc, char *argv[])
{
	struct kinfo_proc *kp;
	struct kinfo_proc *dkp;
	struct stat *stp;
	time_t touched;
	int ch, i, nentries, nusers, wcmd, longidle, longattime, dropgid;
	const char *memf, *nlistf, *p;
	char *x_suffix;
	char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];
	char fn[MAXHOSTNAMELEN];
	char *dot;

	(void)setlocale(LC_ALL, "");
	use_ampm = (*nl_langinfo(T_FMT_AMPM) != '\0');
	use_comma = (*nl_langinfo(RADIXCHAR) != ',');

	/* Are we w(1) or uptime(1)? */
	if (this_is_uptime(argv[0]) == 0) {
		wcmd = 0;
		p = "";
	} else {
		wcmd = 1;
		p = "dhiflM:N:nsuw";
	}

	dropgid = 0;
	memf = _PATH_DEVNULL;
	nlistf = NULL;
	while ((ch = getopt(argc, argv, p)) != -1)
		switch (ch) {
		case 'd':
			dflag = 1;
			break;
		case 'h':
			header = 0;
			break;
		case 'i':
			sortidle = 1;
			break;
		case 'M':
			header = 0;
			memf = optarg;
			dropgid = 1;
			break;
		case 'N':
			nlistf = optarg;
			dropgid = 1;
			break;
		case 'n':
			nflag = 1;
			break;
		case 'f': case 'l': case 's': case 'u': case 'w':
			warnx("[-flsuw] no longer supported");
			/* FALLTHROUGH */
		case '?':
		default:
			usage(wcmd);
		}
	argc -= optind;
	argv += optind;

	if (!(_res.options & RES_INIT))
		res_init();
	_res.retrans = 2;	/* resolver timeout to 2 seconds per try */
	_res.retry = 1;		/* only try once.. */

	/*
	 * Discard setgid privileges if not the running kernel so that bad
	 * guys can't print interesting stuff from kernel memory.
	 */
	if (dropgid)
		setgid(getgid());

	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
		errx(1, "%s", errbuf);

	(void)time(&now);

	if (*argv)
		sel_users = argv;

	setutxent();
	for (nusers = 0; (utmp = getutxent()) != NULL;) {
		if (utmp->ut_type != USER_PROCESS)
			continue;
		if (!(stp = ttystat(utmp->ut_line)))
			continue;	/* corrupted record */
		++nusers;
		if (wcmd == 0)
			continue;
		if (sel_users) {
			int usermatch;
			char **user;

			usermatch = 0;
			for (user = sel_users; !usermatch && *user; user++)
				if (!strcmp(utmp->ut_user, *user))
					usermatch = 1;
			if (!usermatch)
				continue;
		}
		if ((ep = calloc(1, sizeof(struct entry))) == NULL)
			errx(1, "calloc");
		*nextp = ep;
		nextp = &ep->next;
		memmove(&ep->utmp, utmp, sizeof *utmp);
		ep->tdev = stp->st_rdev;
		/*
		 * If this is the console device, attempt to ascertain
		 * the true console device dev_t.
		 */
		if (ep->tdev == 0) {
			size_t size;

			size = sizeof(dev_t);
			(void)sysctlbyname("machdep.consdev", &ep->tdev, &size, NULL, 0);
		}
		touched = stp->st_atime;
		if (touched < ep->utmp.ut_tv.tv_sec) {
			/* tty untouched since before login */
			touched = ep->utmp.ut_tv.tv_sec;
		}
		if ((ep->idle = now - touched) < 0)
			ep->idle = 0;
	}
	endutxent();

	if (header || wcmd == 0) {
		pr_header(&now, nusers);
		if (wcmd == 0) {
			(void)kvm_close(kd);
			exit(0);
		}

#define HEADER_USER		"USER"
#define HEADER_TTY		"TTY"
#define HEADER_FROM		"FROM"
#define HEADER_LOGIN_IDLE	"LOGIN@  IDLE "
#define HEADER_WHAT		"WHAT\n"
#define WUSED  (W_DISPUSERSIZE + W_DISPLINESIZE + W_DISPHOSTSIZE + \
		sizeof(HEADER_LOGIN_IDLE) + 3)	/* header width incl. spaces */ 
		(void)printf("%-*.*s %-*.*s %-*.*s  %s", 
				W_DISPUSERSIZE, W_DISPUSERSIZE, HEADER_USER,
				W_DISPLINESIZE, W_DISPLINESIZE, HEADER_TTY,
				W_DISPHOSTSIZE, W_DISPHOSTSIZE, HEADER_FROM,
				HEADER_LOGIN_IDLE HEADER_WHAT);
	}

	if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries)) == NULL)
		err(1, "%s", kvm_geterr(kd));
	for (i = 0; i < nentries; i++, kp++) {
		if (kp->ki_stat == SIDL || kp->ki_stat == SZOMB ||
		    kp->ki_tdev == NODEV)
			continue;
		for (ep = ehead; ep != NULL; ep = ep->next) {
			if (ep->tdev == kp->ki_tdev) {
				/*
				 * proc is associated with this terminal
				 */
				if (ep->kp == NULL && kp->ki_pgid == kp->ki_tpgid) {
					/*
					 * Proc is 'most interesting'
					 */
					if (proc_compare(ep->kp, kp))
						ep->kp = kp;
				}
				/*
				 * Proc debug option info; add to debug
				 * list using kinfo_proc ki_spare[0]
				 * as next pointer; ptr to ptr avoids the
				 * ptr = long assumption.
				 */
				dkp = ep->dkp;
				ep->dkp = kp;
				debugproc(kp) = dkp;
			}
		}
	}
	if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
	     ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
	     ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
	       ttywidth = 79;
        else
	       ttywidth = ws.ws_col - 1;
	argwidth = ttywidth - WUSED;
	if (argwidth < 4)
		argwidth = 8;
	for (ep = ehead; ep != NULL; ep = ep->next) {
		if (ep->kp == NULL) {
			ep->args = strdup("-");
			continue;
		}
		ep->args = fmt_argv(kvm_getargv(kd, ep->kp, argwidth),
		    ep->kp->ki_comm, NULL, MAXCOMLEN);
		if (ep->args == NULL)
			err(1, NULL);
	}
	/* sort by idle time */
	if (sortidle && ehead != NULL) {
		struct entry *from, *save;

		from = ehead;
		ehead = NULL;
		while (from != NULL) {
			for (nextp = &ehead;
			    (*nextp) && from->idle >= (*nextp)->idle;
			    nextp = &(*nextp)->next)
				continue;
			save = from;
			from = from->next;
			save->next = *nextp;
			*nextp = save;
		}
	}

	for (ep = ehead; ep != NULL; ep = ep->next) {
		struct addrinfo hints, *res;
		struct sockaddr_storage ss;
		struct sockaddr *sa = (struct sockaddr *)&ss;
		struct sockaddr_in *lsin = (struct sockaddr_in *)&ss;
		struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)&ss;
		time_t t;
		int isaddr;

		p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-";
		if ((x_suffix = strrchr(p, ':')) != NULL) {
			if ((dot = strchr(x_suffix, '.')) != NULL &&
			    strchr(dot+1, '.') == NULL)
				*x_suffix++ = '\0';
			else
				x_suffix = NULL;
		}

		isaddr = 0;
		memset(&ss, '\0', sizeof(ss));
		if (inet_pton(AF_INET6, p, &lsin6->sin6_addr) == 1) {
			lsin6->sin6_len = sizeof(*lsin6);
			lsin6->sin6_family = AF_INET6;
			isaddr = 1;
		} else if (inet_pton(AF_INET, p, &lsin->sin_addr) == 1) {
			lsin->sin_len = sizeof(*lsin);
			lsin->sin_family = AF_INET;
			isaddr = 1;
		}
		if (!nflag) {
			/* Attempt to change an IP address into a name */
			if (isaddr && realhostname_sa(fn, sizeof(fn), sa,
			    sa->sa_len) == HOSTNAME_FOUND)
				p = fn;
		} else if (!isaddr) {
			/*
			 * If a host has only one A/AAAA RR, change a
			 * name into an IP address
			 */
			memset(&hints, 0, sizeof(hints));
			hints.ai_flags = AI_PASSIVE;
			hints.ai_family = AF_UNSPEC;
			hints.ai_socktype = SOCK_STREAM;
			if (getaddrinfo(p, NULL, &hints, &res) == 0) {
				if (res->ai_next == NULL &&
				    getnameinfo(res->ai_addr, res->ai_addrlen,
					fn, sizeof(fn), NULL, 0,
					NI_NUMERICHOST) == 0)
					p = fn;
				freeaddrinfo(res);
			}
		}

		if (x_suffix) {
			(void)snprintf(buf, sizeof(buf), "%s:%s", p, x_suffix);
			p = buf;
		}
		if (dflag) {
			for (dkp = ep->dkp; dkp != NULL; dkp = debugproc(dkp)) {
				const char *ptr;

				ptr = fmt_argv(kvm_getargv(kd, dkp, argwidth),
				    dkp->ki_comm, NULL, MAXCOMLEN);
				if (ptr == NULL)
					ptr = "-";
				(void)printf("\t\t%-9d %s\n",
				    dkp->ki_pid, ptr);
			}
		}
		(void)printf("%-*.*s %-*.*s %-*.*s ",
		    W_DISPUSERSIZE, W_DISPUSERSIZE, ep->utmp.ut_user,
		    W_DISPLINESIZE, W_DISPLINESIZE,
		    *ep->utmp.ut_line ?
		    (strncmp(ep->utmp.ut_line, "tty", 3) &&
		    strncmp(ep->utmp.ut_line, "cua", 3) ?
		    ep->utmp.ut_line : ep->utmp.ut_line + 3) : "-",
		    W_DISPHOSTSIZE, W_DISPHOSTSIZE, *p ? p : "-");
		t = ep->utmp.ut_tv.tv_sec;
		longattime = pr_attime(&t, &now);
		longidle = pr_idle(ep->idle);
		(void)printf("%.*s\n", argwidth - longidle - longattime,
		    ep->args);
	}
	(void)kvm_close(kd);
	exit(0);
}
예제 #2
0
int
main(int argc, char **argv)
{
	struct kinfo_proc *kp;
	struct kinfo_proc *dkp;
	struct hostent *hp;
	in_addr_t l;
	int ch, i, nentries, nusers, wcmd, longidle, dropgid;
	char *memf, *nlistf, *p, *x;
#ifdef SUPPORT_UTMP
	struct utmp *ut;
#endif
#ifdef SUPPORT_UTMPX
	struct utmpx *utx;
#endif
	char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];

	(void)setlocale(LC_ALL, "");
	use_ampm = (*nl_langinfo(T_FMT_AMPM) != '\0');
	use_comma = (*nl_langinfo(RADIXCHAR) != ',');

	/* Are we w(1) or uptime(1)? */
	if (this_is_uptime(argv[0]) == 0) {
		wcmd = 0;
		p = "";
	} else {
		wcmd = 1;
		p = "dhiflM:N:nsuw";
	}

	dropgid = 0;
	memf = nlistf = _PATH_DEVNULL;
	while ((ch = getopt(argc, argv, p)) != -1)
		switch (ch) {
		case 'd':
			dflag = 1;
			break;
		case 'h':
			header = 0;
			break;
		case 'i':
			sortidle = 1;
			break;
		case 'M':
			header = 0;
			memf = optarg;
			dropgid = 1;
			break;
		case 'N':
			nlistf = optarg;
			dropgid = 1;
			break;
		case 'n':
			nflag = 1;
			break;
		case 'f': case 'l': case 's': case 'u': case 'w':
			warnx("[-flsuw] no longer supported");
			/* FALLTHROUGH */
		case '?':
		default:
			usage(wcmd);
		}
	argc -= optind;
	argv += optind;

	if (!(_res.options & RES_INIT))
		res_init();
	_res.retrans = 2;	/* resolver timeout to 2 seconds per try */
	_res.retry = 1;		/* only try once.. */

	/*
	 * Discard setgid privileges if not the running kernel so that bad
	 * guys can't print interesting stuff from kernel memory.
	 */
	if (dropgid)
		setgid(getgid());

	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
		errx(1, "%s", errbuf);

	(void)time(&now);
#ifdef SUPPORT_UTMPX
	setutxent();
#endif
#ifdef SUPPORT_UTMP
	setutent();
#endif

	if (*argv)
		sel_users = argv;

	nusers = 0;
#ifdef SUPPORT_UTMPX
	while ((utx = getutxent()) != NULL) {
		if (utx->ut_type != USER_PROCESS)
			continue;
		++nusers;

		if (sel_users) {
			int usermatch;
			char **user;

			usermatch = 0;
			for (user = sel_users; !usermatch && *user; user++)
				if (!strncmp(utx->ut_name, *user, UTX_USERSIZE))
					usermatch = 1;
			if (!usermatch)
				continue;
		}

		if ((ep = calloc(1, sizeof(struct entry))) == NULL)
			err(1, NULL);
		(void)memcpy(ep->name, utx->ut_name, sizeof(utx->ut_name));
		(void)memcpy(ep->line, utx->ut_line, sizeof(utx->ut_line));
		(void)memcpy(ep->host, utx->ut_host, sizeof(utx->ut_host));
		ep->name[sizeof(utx->ut_name)] = '\0';
		ep->line[sizeof(utx->ut_line)] = '\0';
		ep->host[sizeof(utx->ut_host)] = '\0';
#if 1
		/* XXX: Actually we don't support the utx->ut_ss stuff yet */
		if (!nflag || getnameinfo((struct sockaddr *)&utx->ut_ss,
		    utx->ut_ss.ss_len, ep->host, sizeof(ep->host), NULL, 0,
		    NI_NUMERICHOST) != 0) {
			(void)memcpy(ep->host, utx->ut_host,
			    sizeof(utx->ut_host));
			ep->host[sizeof(utx->ut_host)] = '\0';
		}
#endif
		ep->type[0] = 'x';
		ep->tv = utx->ut_tv;
		ep->pid = utx->ut_pid;

		*nextp = ep;
		nextp = &(ep->next);
		if (wcmd != 0)
			process(ep);
	}
#endif

#ifdef SUPPORT_UTMP
	while ((ut = getutent()) != NULL) {
		if (ut->ut_name[0] == '\0')
			continue;
		++nusers;
		if (sel_users) {
			int usermatch;
			char **user;

			usermatch = 0;
			for (user = sel_users; !usermatch && *user; user++)
				if (!strncmp(ut->ut_name, *user, UT_NAMESIZE))
					usermatch = 1;
			if (!usermatch)
				continue;
		}

		/* Don't process entries that we have utmpx for */
		for (ep = ehead; ep != NULL; ep = ep->next) {
			if (strncmp(ep->line, ut->ut_line,
			    sizeof(ut->ut_line)) == 0)
				break;
		}
		if (ep != NULL) {
			--nusers; /* Duplicate entry */
			continue;
		}

		if ((ep = calloc(1, sizeof(struct entry))) == NULL)
			err(1, NULL);
		(void)memcpy(ep->name, ut->ut_name, sizeof(ut->ut_name));
		(void)memcpy(ep->line, ut->ut_line, sizeof(ut->ut_line));
		(void)memcpy(ep->host, ut->ut_host, sizeof(ut->ut_host));
		ep->name[sizeof(ut->ut_name)] = '\0';
		ep->line[sizeof(ut->ut_line)] = '\0';
		ep->host[sizeof(ut->ut_host)] = '\0';
		ep->tv.tv_sec = ut->ut_time;

		*nextp = ep;
		nextp = &(ep->next);
		if (wcmd != 0)
			process(ep);
	}
#endif

#ifdef SUPPORT_UTMPX
	endutxent();
#endif
#ifdef SUPPORT_UTMP
	endutent();
#endif	
	
	if (header || wcmd == 0) {
		pr_header(&now, nusers);
		if (wcmd == 0) {
			(void)kvm_close(kd);
			exit(0);
		}

#define HEADER_USER		"USER"
#define HEADER_TTY		"TTY"
#define HEADER_FROM		"FROM"
#define HEADER_LOGIN_IDLE	"LOGIN@  IDLE "
#define HEADER_WHAT		"WHAT\n"
#define WUSED  (maxname + maxline + maxhost + \
		sizeof(HEADER_LOGIN_IDLE) + 3)	/* header width incl. spaces */ 
		(void)printf("%-*.*s %-*.*s %-*.*s  %s", 
				maxname, maxname, HEADER_USER,
				maxline, maxline, HEADER_TTY,
				maxhost, maxhost, HEADER_FROM,
				HEADER_LOGIN_IDLE HEADER_WHAT);
	}

	if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries)) == NULL)
		err(1, "%s", kvm_geterr(kd));
	for (i = 0; i < nentries; i++, kp++) {
		if (kp->kp_stat == SIDL || kp->kp_stat == SZOMB)
			continue;
		for (ep = ehead; ep != NULL; ep = ep->next) {
			if (ep->tdev == kp->kp_tdev) {
				/*
				 * proc is associated with this terminal
				 */
				if (ep->kp == NULL && kp->kp_pgid == kp->kp_tpgid) {
					/*
					 * Proc is 'most interesting'
					 */
					if (proc_compare(ep->kp, kp))
						ep->kp = kp;
				}
				/*
				 * Proc debug option info; add to debug
				 * list using kinfo_proc kp_eproc.e_spare
				 * as next pointer; ptr to ptr avoids the
				 * ptr = long assumption.
				 */
				dkp = ep->dkp;
				ep->dkp = kp;
				debugproc(kp) = dkp;
			}
			if (ep->pid != 0 && ep->pid == kp->kp_pid) {
				ep->kp = kp;
				break;
			}
		}
	}
	if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
	     ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
	     ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
	       ttywidth = 79;
        else
	       ttywidth = ws.ws_col - 1;
	argwidth = ttywidth - WUSED;
	if (argwidth < 4)
		argwidth = 8;
	for (ep = ehead; ep != NULL; ep = ep->next) {
		if (ep->kp == NULL) {
			ep->args = "-";
			continue;
		}
		ep->args = fmt_argv(kvm_getargv(kd, ep->kp, argwidth),
		    ep->kp->kp_comm, MAXCOMLEN);
		if (ep->args == NULL)
			err(1, NULL);
	}
	/* sort by idle time */
	if (sortidle && ehead != NULL) {
		struct entry *from, *save;

		from = ehead;
		ehead = NULL;
		while (from != NULL) {
			for (nextp = &ehead;
			    (*nextp) && from->idle >= (*nextp)->idle;
			    nextp = &(*nextp)->next)
				continue;
			save = from;
			from = from->next;
			save->next = *nextp;
			*nextp = save;
		}
	}
#if defined(SUPPORT_UTMP) && defined(SUPPORT_UTMPX)
	else if (ehead != NULL) {
		struct entry *from = ehead, *save;

		ehead = NULL;
		while (from != NULL) {
			for (nextp = &ehead;
			    (*nextp) && strcmp(from->line, (*nextp)->line) > 0;
			    nextp = &(*nextp)->next)
				continue;
			save = from;
			from = from->next;
			save->next = *nextp;
			*nextp = save;
		}
	}
#endif

	if (!nflag) {
		if (gethostname(domain, sizeof(domain)) < 0 ||
		    (p = strchr(domain, '.')) == NULL)
			domain[0] = '\0';
		else {
			domain[sizeof(domain) - 1] = '\0';
			memmove(domain, p, strlen(p) + 1);
		}
	}

	for (ep = ehead; ep != NULL; ep = ep->next) {
		char host_buf[UTX_HOSTSIZE + 1];

		host_buf[UTX_HOSTSIZE] = '\0';
		strncpy(host_buf, ep->host, maxhost);
		p = *host_buf ? host_buf : "-";
		if ((x = strchr(p, ':')) != NULL)
			*x++ = '\0';
		if (!nflag && isdigit(*p) && (l = inet_addr(p)) != -1 &&
		    (hp = gethostbyaddr(&l, sizeof(l), AF_INET))) {
			if (domain[0] != '\0') {
				p = hp->h_name;
				p += strlen(hp->h_name);
				p -= strlen(domain);
				if (p > hp->h_name &&
				    strcasecmp(p, domain) == 0)
					*p = '\0';
			}
			p = hp->h_name;
		}
		if (nflag && *p && strcmp(p, "-") &&
		    inet_addr(p) == INADDR_NONE) {
			hp = gethostbyname(p);

			if (hp != NULL) {
				struct in_addr in;

				memmove(&in, hp->h_addr, sizeof(in));
				p = inet_ntoa(in);
			}
		}
		if (x) {
			(void)snprintf(buf, sizeof(buf), "%s:%s", p, x);
			p = buf;
		}
		if (dflag) {
			for (dkp = ep->dkp; dkp != NULL; dkp = debugproc(dkp)) {
				char *ptr;

				ptr = fmt_argv(kvm_getargv(kd, dkp, argwidth),
				    dkp->kp_comm, MAXCOMLEN);
				if (ptr == NULL)
					ptr = "-";
				(void)printf("\t\t%-9d %s\n",
				    dkp->kp_pid, ptr);
			}
		}
		(void)printf("%-*.*s %-*.*s %-*.*s ",
		    maxname, maxname, ep->name,
		    maxline, maxline,
		    strncmp(ep->line, "tty", 3) &&
		    strncmp(ep->line, "cua", 3) ?
		    ep->line : ep->line + 3,
		    maxhost, maxhost, *p ? p : "-");
		then = (time_t)ep->tv.tv_sec;
		pr_attime(&then, &now);
		longidle = pr_idle(ep->idle);
		(void)printf("%.*s\n", argwidth - longidle, ep->args);
	}
	(void)kvm_close(kd);
	exit(0);
}