void
doexec(const char *cmd, const char *arg1, const char *arg2)
{
dodebug("exec %s %s %s", cmd, arg1, arg2);
switch(vfork()) {
case -1:
dolog(LOG_ERR, "can't vfork: %s", strerror(errno));
break;
case 0:
execl(cmd, cmd, arg1, arg2, NULL);
dolog(LOG_ERR, "can't exec %s: %s", cmd, strerror(errno));
exit(1);
break;
default:
wait(NULL);
break;
}
}
int
main(int argc, char *argv[])
{
int f_dayAfter = 0; /* days after current date */
int f_dayBefore = 0; /* days before current date */
int Friday = 5; /* day before weekend */
int ch;
struct tm tp1, tp2;
(void)setlocale(LC_ALL, "");
while ((ch = getopt(argc, argv, "-A:aB:D:dF:f:l:t:U:W:?")) != -1)
switch (ch) {
case '-': /* backward contemptible */
case 'a':
if (getuid()) {
errno = EPERM;
err(1, NULL);
}
doall = 1;
break;
case 'W': /* we don't need no steenking Fridays */
Friday = -1;
/* FALLTHROUGH */
case 'A': /* days after current date */
f_dayAfter = atoi(optarg);
break;
case 'B': /* days before current date */
f_dayBefore = atoi(optarg);
break;
case 'D': /* debug output of sun and moon info */
DEBUG = optarg;
break;
case 'd': /* debug output of current date */
debug = 1;
break;
case 'F': /* Change the time: When does weekend start? */
Friday = atoi(optarg);
break;
case 'f': /* other calendar file */
calendarFile = optarg;
break;
case 'l': /* Change longitudal position */
EastLongitude = strtol(optarg, NULL, 10);
break;
case 't': /* other date, for tests */
f_time = Mktime(optarg);
break;
case 'U': /* Change UTC offset */
UTCOffset = strtod(optarg, NULL);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc)
usage();
/* use current time */
if (f_time <= 0)
(void)time(&f_time);
/* if not set, determine where I could be */
{
if (UTCOffset == UTCOFFSET_NOTSET &&
EastLongitude == LONGITUDE_NOTSET) {
/* Calculate on difference between here and UTC */
time_t t;
struct tm tm;
long utcoffset, hh, mm, ss;
double uo;
time(&t);
localtime_r(&t, &tm);
utcoffset = tm.tm_gmtoff;
/* seconds -> hh:mm:ss */
hh = utcoffset / SECSPERHOUR;
utcoffset %= SECSPERHOUR;
mm = utcoffset / SECSPERMINUTE;
utcoffset %= SECSPERMINUTE;
ss = utcoffset;
/* hh:mm:ss -> hh.mmss */
uo = mm + (100.0 * (ss / 60.0));
uo /= 60.0 / 100.0;
uo = hh + uo / 100;
UTCOffset = uo;
EastLongitude = UTCOffset * 15;
} else if (UTCOffset == UTCOFFSET_NOTSET) {
/* Base on information given */
UTCOffset = EastLongitude / 15;
} else if (EastLongitude == LONGITUDE_NOTSET) {
/* Base on information given */
EastLongitude = UTCOffset * 15;
}
}
settimes(f_time, f_dayBefore, f_dayAfter, Friday, &tp1, &tp2);
generatedates(&tp1, &tp2);
/*
* FROM now on, we are working in UTC.
* This will only affect moon and sun related events anyway.
*/
if (setenv("TZ", "UTC", 1) != 0)
errx(1, "setenv: %s", strerror(errno));
tzset();
if (debug)
dumpdates();
if (DEBUG != NULL) {
dodebug(DEBUG);
exit(0);
}
if (doall)
while ((pw = getpwent()) != NULL) {
(void)setegid(pw->pw_gid);
(void)initgroups(pw->pw_name, pw->pw_gid);
(void)seteuid(pw->pw_uid);
if (!chdir(pw->pw_dir))
cal();
(void)seteuid(0);
}
else
cal();
exit(0);
}
