+/* $NetBSD: dm.c,v 1.29 2009/08/27 00:22:28 dholland Exp $ */
+
/*
- * Copyright (c) 1987 Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1987, 1993
+ * The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* SUCH DAMAGE.
*/
+#include <sys/cdefs.h>
#ifndef lint
-char copyright[] =
-"@(#) Copyright (c) 1987 Regents of the University of California.\n\
- All rights reserved.\n";
+__COPYRIGHT("@(#) Copyright (c) 1987, 1993\
+ The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
-static char sccsid[] = "@(#)dm.c 5.16 (Berkeley) 2/28/91";
+#if 0
+static char sccsid[] = "@(#)dm.c 8.1 (Berkeley) 5/31/93";
+#else
+__RCSID("$NetBSD: dm.c,v 1.29 2009/08/27 00:22:28 dholland Exp $");
+#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/file.h>
#include <sys/time.h>
#include <sys/resource.h>
+
+#include <err.h>
+#include <ctype.h>
+#include <errno.h>
#include <pwd.h>
-#include <utmp.h>
-#include <nlist.h>
#include <stdio.h>
-#include <ctype.h>
+#include <stdlib.h>
#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "utmpentry.h"
#include "pathnames.h"
-extern int errno;
static time_t now; /* current time value */
static int priority = 0; /* priority game runs at */
static char *game, /* requested game */
*gametty; /* from tty? */
-/*ARGSUSED*/
-main(argc, argv)
- int argc;
- char **argv;
+static void c_day(const char *, const char *, const char *);
+static void c_game(const char *, const char *, const char *, const char *);
+static void c_tty(const char *);
+static const char *hour(int);
+static double load(void);
+static void nogamefile(void);
+static void play(char **) __dead;
+static void read_config(void);
+static int users(void);
+
+#ifdef LOG
+static void logfile(void);
+#endif
+
+int
+main(int argc __unused, char *argv[])
{
- char *cp, *rindex(), *ttyname();
- time_t time();
+ char *cp;
nogamefile();
- game = (cp = rindex(*argv, '/')) ? ++cp : *argv;
+ game = (cp = strrchr(*argv, '/')) ? ++cp : *argv;
if (!strcmp(game, "dm"))
exit(0);
gametty = ttyname(0);
+ unsetenv("TZ");
(void)time(&now);
read_config();
#ifdef LOG
#endif
play(argv);
/*NOTREACHED*/
+ return (0);
}
/*
* play --
* play the game
*/
-play(args)
- char **args;
+static void
+play(char **args)
{
char pbuf[MAXPATHLEN];
- (void)strcpy(pbuf, _PATH_HIDE);
- (void)strcpy(pbuf + sizeof(_PATH_HIDE) - 1, game);
+ snprintf(pbuf, sizeof(pbuf), "%s%s", _PATH_HIDE, game);
if (priority > 0) /* < 0 requires root */
(void)setpriority(PRIO_PROCESS, 0, priority);
- setgid(getgid()); /* we run setgid kmem; lose it */
execv(pbuf, args);
- (void)fprintf(stderr, "dm: %s: %s\n", pbuf, strerror(errno));
- exit(1);
+ err(1, "%s", pbuf);
}
/*
* read_config --
* read through config file, looking for key words.
*/
-read_config()
+static void
+read_config(void)
{
FILE *cfp;
char lbuf[BUFSIZ], f1[40], f2[40], f3[40], f4[40], f5[40];
if (!(cfp = fopen(_PATH_CONFIG, "r")))
return;
while (fgets(lbuf, sizeof(lbuf), cfp))
- switch(*lbuf) {
+ switch (*lbuf) {
case 'b': /* badtty */
- if (sscanf(lbuf, "%s%s", f1, f2) != 2 ||
+ if (sscanf(lbuf, "%39s%39s", f1, f2) != 2 ||
strcasecmp(f1, "badtty"))
break;
c_tty(f2);
break;
case 'g': /* game */
- if (sscanf(lbuf, "%s%s%s%s%s",
+ if (sscanf(lbuf, "%39s%39s%39s%39s%39s",
f1, f2, f3, f4, f5) != 5 || strcasecmp(f1, "game"))
break;
c_game(f2, f3, f4, f5);
break;
case 't': /* time */
- if (sscanf(lbuf, "%s%s%s%s", f1, f2, f3, f4) != 4 ||
+ if (sscanf(lbuf, "%39s%39s%39s%39s", f1, f2, f3, f4) != 4 ||
strcasecmp(f1, "time"))
break;
c_day(f2, f3, f4);
* c_day --
* if day is today, see if okay to play
*/
-c_day(s_day, s_start, s_stop)
- char *s_day, *s_start, *s_stop;
+static void
+c_day(const char *s_day, const char *s_start, const char *s_stop)
{
- static char *days[] = {
+ static const char *const days[] = {
"sunday", "monday", "tuesday", "wednesday",
"thursday", "friday", "saturday",
};
ct = localtime(&now);
if (strcasecmp(s_day, days[ct->tm_wday]))
return;
- if (!isdigit(*s_start) || !isdigit(*s_stop))
+ if (!isdigit((unsigned char)*s_start) ||
+ !isdigit((unsigned char)*s_stop))
return;
start = atoi(s_start);
stop = atoi(s_stop);
if (ct->tm_hour >= start && ct->tm_hour < stop) {
- fputs("dm: Sorry, games are not available from ", stderr);
- hour(start);
- fputs(" to ", stderr);
- hour(stop);
- fputs(" today.\n", stderr);
- exit(0);
+ if (start == 0 && stop == 24)
+ errx(0, "Sorry, games are not available today.");
+ else
+ errx(0, "Sorry, games are not available from %s to %s today.",
+ hour(start), hour(stop));
}
}
* c_tty --
* decide if this tty can be used for games.
*/
-c_tty(tty)
- char *tty;
+static void
+c_tty(const char *tty)
{
static int first = 1;
static char *p_tty;
- char *rindex();
if (first) {
- p_tty = rindex(gametty, '/');
+ p_tty = strrchr(gametty, '/');
first = 0;
}
- if (!strcmp(gametty, tty) || p_tty && !strcmp(p_tty, tty)) {
- fprintf(stderr, "dm: Sorry, you may not play games on %s.\n", gametty);
- exit(0);
- }
+ if (!strcmp(gametty, tty) || (p_tty && !strcmp(p_tty, tty)))
+ errx(1, "Sorry, you may not play games on %s.", gametty);
}
/*
* c_game --
* see if game can be played now.
*/
-c_game(s_game, s_load, s_users, s_priority)
- char *s_game, *s_load, *s_users, *s_priority;
+static void
+c_game(const char *s_game, const char *s_load, const char *s_users,
+ const char *s_priority)
{
static int found;
- double load();
if (found)
return;
if (strcmp(game, s_game) && strcasecmp("default", s_game))
return;
++found;
- if (isdigit(*s_load) && atoi(s_load) < load()) {
- fputs("dm: Sorry, the load average is too high right now.\n", stderr);
- exit(0);
- }
- if (isdigit(*s_users) && atoi(s_users) <= users()) {
- fputs("dm: Sorry, there are too many users logged on right now.\n", stderr);
- exit(0);
- }
- if (isdigit(*s_priority))
+ if (isdigit((unsigned char)*s_load) && atoi(s_load) < load())
+ errx(0, "Sorry, the load average is too high right now.");
+ if (isdigit((unsigned char)*s_users) && atoi(s_users) <= users())
+ errx(0, "Sorry, there are too many users logged on right now.");
+ if (isdigit((unsigned char)*s_priority))
priority = atoi(s_priority);
}
* load --
* return 15 minute load average
*/
-double
-load()
+static double
+load(void)
{
double avenrun[3];
- if (getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0])) < 0) {
- fputs("dm: getloadavg() failed.\n", stderr);
- exit(1);
- }
- return(avenrun[2]);
+ if (getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0])) < 0)
+ err(1, "getloadavg() failed");
+ return (avenrun[2]);
}
/*
* todo: check idle time; if idle more than X minutes, don't
* count them.
*/
-users()
+static int
+users(void)
{
-
- register int nusers, utmp;
- struct utmp buf;
+ struct utmpentry *ep;
+ int nusers;
- if ((utmp = open(_PATH_UTMP, O_RDONLY, 0)) < 0) {
- (void)fprintf(stderr, "dm: %s: %s\n",
- _PATH_UTMP, strerror(errno));
- exit(1);
- }
- for (nusers = 0; read(utmp, (char *)&buf, sizeof(struct utmp)) > 0;)
- if (buf.ut_name[0] != '\0')
- ++nusers;
- return(nusers);
+ nusers = getutentries(NULL, &ep);
+ return nusers;
}
-nogamefile()
+static void
+nogamefile(void)
{
- register int fd, n;
+ int fd, n;
char buf[BUFSIZ];
if ((fd = open(_PATH_NOGAMES, O_RDONLY, 0)) >= 0) {
* hour --
* print out the hour in human form
*/
-hour(h)
- int h;
+static const char *
+hour(int h)
{
- switch(h) {
- case 0:
- fputs("midnight", stderr);
- break;
- case 12:
- fputs("noon", stderr);
- break;
- default:
- if (h > 12)
- fprintf(stderr, "%dpm", h - 12);
- else
- fprintf(stderr, "%dam", h);
- }
+ static const char *const hours[] = {
+ "midnight", "1am", "2am", "3am", "4am", "5am",
+ "6am", "7am", "8am", "9am", "10am", "11am",
+ "noon", "1pm", "2pm", "3pm", "4pm", "5pm",
+ "6pm", "7pm", "8pm", "9pm", "10pm", "11pm", "midnight" };
+
+ if (h < 0 || h > 24)
+ return ("BAD TIME");
+ else
+ return (hours[h]);
}
#ifdef LOG
* logfile --
* log play of game
*/
-logfile()
+static void
+logfile(void)
{
- struct passwd *pw, *getpwuid();
+ struct passwd *pw;
FILE *lp;
uid_t uid;
int lock_cnt;
- char *ctime();
if (lp = fopen(_PATH_LOG, "a")) {
for (lock_cnt = 0;; ++lock_cnt) {
if (!flock(fileno(lp), LOCK_EX))
break;
if (lock_cnt == 4) {
- perror("dm: log lock");
+ warnx("log lock");
(void)fclose(lp);
return;
}
- sleep((u_int)1);
+ sleep(1);
}
if (pw = getpwuid(uid = getuid()))
fputs(pw->pw_name, lp);
else
fprintf(lp, "%u", uid);
fprintf(lp, "\t%s\t%s\t%s", game, gametty, ctime(&now));
- (void)fclose(lp);
(void)flock(fileno(lp), LOCK_UN);
+ (void)fclose(lp);
}
}
#endif /* LOG */
git.ckatri.com / bsdgames-darwin.git / blobdiff