version 1.6, 1997/01/15 23:42:16 |
version 1.33, 2015/11/16 17:49:35 |
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* 2. Redistributions in binary form must reproduce the above copyright |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
* 3. Neither the name of the University nor the names of its contributors |
* must display the following acknowledgement: |
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* This product includes software developed by the University of |
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* California, Berkeley and its contributors. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* without specific prior written permission. |
* |
* |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
*/ |
*/ |
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#ifndef lint |
#include <sys/stat.h> |
static const char copyright[] = |
#include <sys/types.h> |
"@(#) Copyright (c) 1989, 1993\n\ |
#include <sys/wait.h> |
The Regents of the University of California. All rights reserved.\n"; |
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#endif /* not lint */ |
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#ifndef lint |
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#if 0 |
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static const char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94"; |
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#else |
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static char rcsid[] = "$OpenBSD$"; |
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#endif |
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#endif /* not lint */ |
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#include <err.h> |
#include <err.h> |
#include <errno.h> |
#include <errno.h> |
#include <locale.h> |
#include <locale.h> |
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#include <login_cap.h> |
#include <pwd.h> |
#include <pwd.h> |
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#include <signal.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
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#include <limits.h> |
#include <time.h> |
#include <time.h> |
#include <unistd.h> |
#include <unistd.h> |
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#include "pathnames.h" |
#include "pathnames.h" |
#include "calendar.h" |
#include "calendar.h" |
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char *calendarFile = "calendar"; /* default calendar file */ |
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char *calendarHome = ".calendar"; /* HOME */ |
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char *calendarNoMail = "nomail"; /* don't sent mail if this file exists */ |
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struct passwd *pw; |
struct passwd *pw; |
int doall = 0; |
int doall = 0; |
time_t f_time = 0; |
time_t f_time = 0; |
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int bodun_always = 0; |
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int f_dayAfter = 0; /* days after current date */ |
int f_dayAfter = 0; /* days after current date */ |
int f_dayBefore = 0; /* days before current date */ |
int f_dayBefore = 0; /* days before current date */ |
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int f_SetdayAfter = 0; /* calendar invoked with -A */ |
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struct specialev spev[NUMEV]; |
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void childsig(int); |
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int |
int |
main(argc, argv) |
main(int argc, char *argv[]) |
int argc; |
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char *argv[]; |
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{ |
{ |
int ch; |
int ch; |
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const char *errstr; |
char *caldir; |
char *caldir; |
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(void) setlocale(LC_ALL, ""); |
(void)setlocale(LC_ALL, ""); |
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while ((ch = getopt(argc, argv, "?-af:t:A:B:")) != -1) |
while ((ch = getopt(argc, argv, "abf:t:A:B:-")) != -1) |
switch (ch) { |
switch (ch) { |
case '-': /* backward contemptible */ |
case '-': /* backward contemptible */ |
case 'a': |
case 'a': |
if (getuid()) |
if (getuid()) |
errx(1, strerror(EPERM)); |
errx(1, "%s", strerror(EPERM)); |
doall = 1; |
doall = 1; |
break; |
break; |
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case 'b': |
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bodun_always = 1; |
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break; |
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case 'f': /* other calendar file */ |
case 'f': /* other calendar file */ |
calendarFile = optarg; |
calendarFile = optarg; |
break; |
break; |
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case 't': /* other date, undocumented, for tests */ |
case 't': /* other date, undocumented, for tests */ |
f_time = Mktime (optarg); |
if ((f_time = Mktime(optarg)) <= 0) |
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errx(1, "specified date is outside allowed range"); |
break; |
break; |
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case 'A': /* days after current date */ |
case 'A': /* days after current date */ |
f_dayAfter = atoi(optarg); |
f_dayAfter = strtonum(optarg, 0, INT_MAX, &errstr); |
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if (errstr) |
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errx(1, "-A %s: %s", optarg, errstr); |
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f_SetdayAfter = 1; |
break; |
break; |
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case 'B': /* days before current date */ |
case 'B': /* days before current date */ |
f_dayBefore = atoi(optarg); |
f_dayBefore = strtonum(optarg, 0, INT_MAX, &errstr); |
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if (errstr) |
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errx(1, "-B %s: %s", optarg, errstr); |
break; |
break; |
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case '?': |
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default: |
default: |
usage(); |
usage(); |
} |
} |
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if (argc) |
if (argc) |
usage(); |
usage(); |
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if (doall) { |
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if (pledge("stdio rpath tmppath fattr id proc exec", NULL) |
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== -1) |
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err(1, "pledge"); |
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} else { |
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if (pledge("stdio rpath proc exec", NULL) == -1) |
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err(1, "pledge"); |
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} |
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/* use current time */ |
/* use current time */ |
if (f_time <= 0) |
if (f_time <= 0) |
(void)time(&f_time); |
(void)time(&f_time); |
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settime(f_time); |
if (f_dayBefore) { |
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/* Move back in time and only look forwards */ |
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f_dayAfter += f_dayBefore; |
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f_time -= SECSPERDAY * f_dayBefore; |
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f_dayBefore = 0; |
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} |
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settime(&f_time); |
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if (doall) |
if (doall) { |
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pid_t kid, deadkid; |
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int kidstat, kidreaped, runningkids; |
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int acstat; |
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struct stat sbuf; |
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time_t t; |
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unsigned int sleeptime; |
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signal(SIGCHLD, childsig); |
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runningkids = 0; |
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t = time(NULL); |
while ((pw = getpwent()) != NULL) { |
while ((pw = getpwent()) != NULL) { |
(void)setegid(pw->pw_gid); |
acstat = 0; |
(void)initgroups(pw->pw_name, pw->pw_gid); |
/* Avoid unnecessary forks. The calendar file is only |
(void)seteuid(pw->pw_uid); |
* opened as the user later; if it can't be opened, |
if (!chdir(pw->pw_dir)) |
* it's no big deal. Also, get to correct directory. |
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* Note that in an NFS environment root may get EACCES |
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* on a chdir(), in which case we have to fork. As long as |
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* we can chdir() we can stat(), unless the user is |
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* modifying permissions while this is running. |
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*/ |
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if (chdir(pw->pw_dir)) { |
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if (errno == EACCES) |
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acstat = 1; |
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else |
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continue; |
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} |
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if (stat(calendarFile, &sbuf) != 0) { |
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if (chdir(calendarHome)) { |
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if (errno == EACCES) |
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acstat = 1; |
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else |
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continue; |
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} |
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if (stat(calendarNoMail, &sbuf) == 0 || |
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stat(calendarFile, &sbuf) != 0) |
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continue; |
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} |
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sleeptime = USERTIMEOUT; |
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switch ((kid = fork())) { |
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case -1: /* error */ |
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warn("fork"); |
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continue; |
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case 0: /* child */ |
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(void)setpgid(getpid(), getpid()); |
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(void)setlocale(LC_ALL, ""); |
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if (setusercontext(NULL, pw, pw->pw_uid, |
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LOGIN_SETALL ^ LOGIN_SETLOGIN)) |
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err(1, "unable to set user context (uid %u)", |
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pw->pw_uid); |
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if (acstat) { |
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if (chdir(pw->pw_dir) || |
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stat(calendarFile, &sbuf) != 0 || |
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chdir(calendarHome) || |
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stat(calendarNoMail, &sbuf) == 0 || |
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stat(calendarFile, &sbuf) != 0) |
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exit(0); |
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} |
cal(); |
cal(); |
(void)seteuid(0); |
exit(0); |
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} |
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/* parent: wait a reasonable time, then kill child if |
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* necessary. |
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*/ |
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runningkids++; |
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kidreaped = 0; |
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do { |
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sleeptime = sleep(sleeptime); |
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/* Note that there is the possibility, if the sleep |
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* stops early due to some other signal, of the child |
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* terminating and not getting detected during the next |
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* sleep. In that unlikely worst case, we just sleep |
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* too long for that user. |
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*/ |
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for (;;) { |
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deadkid = waitpid(-1, &kidstat, WNOHANG); |
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if (deadkid <= 0) |
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break; |
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runningkids--; |
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if (deadkid == kid) { |
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kidreaped = 1; |
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sleeptime = 0; |
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} |
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} |
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} while (sleeptime); |
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if (!kidreaped) { |
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/* It doesn't _really_ matter if the kill fails, e.g. |
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* if there's only a zombie now. |
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*/ |
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if (getpgid(kid) != getpgrp()) |
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(void)killpg(getpgid(kid), SIGTERM); |
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else |
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(void)kill(kid, SIGTERM); |
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warnx("uid %u did not finish in time", pw->pw_uid); |
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} |
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if (time(NULL) - t >= SECSPERDAY) |
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errx(2, "'calendar -a' took more than a day; " |
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"stopped at uid %u", |
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pw->pw_uid); |
} |
} |
else if ((caldir = getenv("CALENDAR_DIR")) != NULL) { |
for (;;) { |
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deadkid = waitpid(-1, &kidstat, WNOHANG); |
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if (deadkid <= 0) |
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break; |
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runningkids--; |
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} |
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if (runningkids) |
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warnx("%d child processes still running when " |
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"'calendar -a' finished", runningkids); |
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} else if ((caldir = getenv("CALENDAR_DIR")) != NULL) { |
if(!chdir(caldir)) |
if(!chdir(caldir)) |
cal(); |
cal(); |
} else |
} else |
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void |
void |
usage() |
usage(void) |
{ |
{ |
(void)fprintf(stderr, |
(void)fprintf(stderr, |
"usage: calendar [-a] [-A days] [-B days] [-f calendarfile]\n"); |
"usage: calendar [-ab] [-A num] [-B num] [-f calendarfile] " |
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"[-t [[[cc]yy]mm]dd]\n"); |
exit(1); |
exit(1); |
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} |
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void |
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childsig(int signo) |
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{ |
} |
} |