1 /*-
2 * at.c : Put file into atrun queue
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (C) 1993, 1994 Thomas Koenig
7 *
8 * Atrun & Atq modifications
9 * Copyright (C) 1993 David Parsons
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. The name of the author(s) may not be used to endorse or promote
17 * products derived from this software without specific prior written
18 * permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #define _USE_BSD 1
34
35 /* System Headers */
36
37 #include <sys/param.h>
38 #include <sys/stat.h>
39 #include <sys/time.h>
40 #include <sys/wait.h>
41 #include <ctype.h>
42 #include <dirent.h>
43 #include <err.h>
44 #include <errno.h>
45 #include <fcntl.h>
46 #ifndef __FreeBSD__
47 #include <getopt.h>
48 #endif
49 #ifdef __FreeBSD__
50 #include <locale.h>
51 #endif
52 #include <pwd.h>
53 #include <signal.h>
54 #include <stddef.h>
55 #include <stdio.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <time.h>
59 #include <unistd.h>
60
61 /* Local headers */
62
63 #include "at.h"
64 #include "panic.h"
65 #include "parsetime.h"
66 #include "perm.h"
67
68 #define MAIN
69 #include "privs.h"
70
71 /* Macros */
72
73 #ifndef ATJOB_DIR
74 #define ATJOB_DIR "/usr/spool/atjobs/"
75 #endif
76
77 #ifndef LFILE
78 #define LFILE ATJOB_DIR ".lockfile"
79 #endif
80
81 #ifndef ATJOB_MX
82 #define ATJOB_MX 255
83 #endif
84
85 #define ALARMC 10 /* Number of seconds to wait for timeout */
86
87 #define SIZE 255
88 #define TIMESIZE 50
89
90 enum { ATQ, ATRM, AT, BATCH, CAT }; /* what program we want to run */
91
92 /* File scope variables */
93
94 static const char *no_export[] = {
95 "TERM", "TERMCAP", "DISPLAY", "_"
96 };
97 static int send_mail = 0;
98 static char *atinput = NULL; /* where to get input from */
99 static char atqueue = 0; /* which queue to examine for jobs (atq) */
100
101 /* External variables */
102
103 extern char **environ;
104 int fcreated;
105 char atfile[] = ATJOB_DIR "12345678901234";
106 char atverify = 0; /* verify time instead of queuing job */
107 char *namep;
108
109 /* Function declarations */
110
111 static void sigc(int signo);
112 static void alarmc(int signo);
113 static char *cwdname(void);
114 static void writefile(time_t runtimer, char queue);
115 static void list_jobs(long *, int);
116 static long nextjob(void);
117 static time_t ttime(const char *arg);
118 static int in_job_list(long, long *, int);
119 static long *get_job_list(int, char *[], int *);
120
121 /* Signal catching functions */
122
sigc(int signo __unused)123 static void sigc(int signo __unused)
124 {
125 /* If the user presses ^C, remove the spool file and exit
126 */
127 if (fcreated)
128 {
129 PRIV_START
130 unlink(atfile);
131 PRIV_END
132 }
133
134 _exit(EXIT_FAILURE);
135 }
136
alarmc(int signo __unused)137 static void alarmc(int signo __unused)
138 {
139 char buf[1024];
140
141 /* Time out after some seconds. */
142 strlcpy(buf, namep, sizeof(buf));
143 strlcat(buf, ": file locking timed out\n", sizeof(buf));
144 write(STDERR_FILENO, buf, strlen(buf));
145 sigc(0);
146 }
147
148 /* Local functions */
149
cwdname(void)150 static char *cwdname(void)
151 {
152 /* Read in the current directory; the name will be overwritten on
153 * subsequent calls.
154 */
155 static char *ptr = NULL;
156 static size_t size = SIZE;
157
158 if (ptr == NULL)
159 if ((ptr = malloc(size)) == NULL)
160 errx(EXIT_FAILURE, "virtual memory exhausted");
161
162 while (1)
163 {
164 if (ptr == NULL)
165 panic("out of memory");
166
167 if (getcwd(ptr, size-1) != NULL)
168 return ptr;
169
170 if (errno != ERANGE)
171 perr("cannot get directory");
172
173 free (ptr);
174 size += SIZE;
175 if ((ptr = malloc(size)) == NULL)
176 errx(EXIT_FAILURE, "virtual memory exhausted");
177 }
178 }
179
180 static long
nextjob(void)181 nextjob(void)
182 {
183 long jobno;
184 FILE *fid;
185
186 if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != NULL) {
187 if (fscanf(fid, "%5lx", &jobno) == 1) {
188 rewind(fid);
189 jobno = (1+jobno) % 0xfffff; /* 2^20 jobs enough? */
190 fprintf(fid, "%05lx\n", jobno);
191 }
192 else
193 jobno = EOF;
194 fclose(fid);
195 return jobno;
196 }
197 else if ((fid = fopen(ATJOB_DIR ".SEQ", "w")) != NULL) {
198 fprintf(fid, "%05lx\n", jobno = 1);
199 fclose(fid);
200 return 1;
201 }
202 return EOF;
203 }
204
205 static void
writefile(time_t runtimer,char queue)206 writefile(time_t runtimer, char queue)
207 {
208 /* This does most of the work if at or batch are invoked for writing a job.
209 */
210 long jobno;
211 char *ap, *ppos, *mailname;
212 struct passwd *pass_entry;
213 struct stat statbuf;
214 int fdes, lockdes, fd2;
215 FILE *fp, *fpin;
216 struct sigaction act;
217 char **atenv;
218 int ch;
219 mode_t cmask;
220 struct flock lock;
221
222 #ifdef __FreeBSD__
223 (void) setlocale(LC_TIME, "");
224 #endif
225
226 /* Install the signal handler for SIGINT; terminate after removing the
227 * spool file if necessary
228 */
229 act.sa_handler = sigc;
230 sigemptyset(&(act.sa_mask));
231 act.sa_flags = 0;
232
233 sigaction(SIGINT, &act, NULL);
234
235 ppos = atfile + strlen(ATJOB_DIR);
236
237 /* Loop over all possible file names for running something at this
238 * particular time, see if a file is there; the first empty slot at any
239 * particular time is used. Lock the file LFILE first to make sure
240 * we're alone when doing this.
241 */
242
243 PRIV_START
244
245 if ((lockdes = open(LFILE, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR)) < 0)
246 perr("cannot open lockfile " LFILE);
247
248 lock.l_type = F_WRLCK; lock.l_whence = SEEK_SET; lock.l_start = 0;
249 lock.l_len = 0;
250
251 act.sa_handler = alarmc;
252 sigemptyset(&(act.sa_mask));
253 act.sa_flags = 0;
254
255 /* Set an alarm so a timeout occurs after ALARMC seconds, in case
256 * something is seriously broken.
257 */
258 sigaction(SIGALRM, &act, NULL);
259 alarm(ALARMC);
260 fcntl(lockdes, F_SETLKW, &lock);
261 alarm(0);
262
263 if ((jobno = nextjob()) == EOF)
264 perr("cannot generate job number");
265
266 sprintf(ppos, "%c%5lx%8lx", queue,
267 jobno, (unsigned long) (runtimer/60));
268
269 for(ap=ppos; *ap != '\0'; ap ++)
270 if (*ap == ' ')
271 *ap = '0';
272
273 if (stat(atfile, &statbuf) != 0)
274 if (errno != ENOENT)
275 perr("cannot access " ATJOB_DIR);
276
277 /* Create the file. The x bit is only going to be set after it has
278 * been completely written out, to make sure it is not executed in the
279 * meantime. To make sure they do not get deleted, turn off their r
280 * bit. Yes, this is a kluge.
281 */
282 cmask = umask(S_IRUSR | S_IWUSR | S_IXUSR);
283 if ((fdes = creat(atfile, O_WRONLY)) == -1)
284 perr("cannot create atjob file");
285
286 if ((fd2 = dup(fdes)) <0)
287 perr("error in dup() of job file");
288
289 if(fchown(fd2, real_uid, real_gid) != 0)
290 perr("cannot give away file");
291
292 PRIV_END
293
294 /* We no longer need suid root; now we just need to be able to write
295 * to the directory, if necessary.
296 */
297
298 REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
299
300 /* We've successfully created the file; let's set the flag so it
301 * gets removed in case of an interrupt or error.
302 */
303 fcreated = 1;
304
305 /* Now we can release the lock, so other people can access it
306 */
307 lock.l_type = F_UNLCK; lock.l_whence = SEEK_SET; lock.l_start = 0;
308 lock.l_len = 0;
309 fcntl(lockdes, F_SETLKW, &lock);
310 close(lockdes);
311
312 if((fp = fdopen(fdes, "w")) == NULL)
313 panic("cannot reopen atjob file");
314
315 /* Get the userid to mail to, first by trying getlogin(),
316 * then from LOGNAME, finally from getpwuid().
317 */
318 mailname = getlogin();
319 if (mailname == NULL)
320 mailname = getenv("LOGNAME");
321
322 if ((mailname == NULL) || (mailname[0] == '\0')
323 || (strlen(mailname) >= MAXLOGNAME) || (getpwnam(mailname)==NULL))
324 {
325 pass_entry = getpwuid(real_uid);
326 if (pass_entry != NULL)
327 mailname = pass_entry->pw_name;
328 }
329
330 if (atinput != (char *) NULL)
331 {
332 fpin = freopen(atinput, "r", stdin);
333 if (fpin == NULL)
334 perr("cannot open input file");
335 }
336 fprintf(fp, "#!/bin/sh\n# atrun uid=%ld gid=%ld\n# mail %*s %d\n",
337 (long) real_uid, (long) real_gid, MAXLOGNAME - 1, mailname,
338 send_mail);
339
340 /* Write out the umask at the time of invocation
341 */
342 fprintf(fp, "umask %lo\n", (unsigned long) cmask);
343
344 /* Write out the environment. Anything that may look like a
345 * special character to the shell is quoted, except for \n, which is
346 * done with a pair of "'s. Don't export the no_export list (such
347 * as TERM or DISPLAY) because we don't want these.
348 */
349 for (atenv= environ; *atenv != NULL; atenv++)
350 {
351 int export = 1;
352 char *eqp;
353
354 eqp = strchr(*atenv, '=');
355 if (eqp == NULL)
356 eqp = *atenv;
357 else
358 {
359 size_t i;
360 for (i = 0; i < nitems(no_export); i++)
361 {
362 export = export
363 && (strncmp(*atenv, no_export[i],
364 (size_t) (eqp-*atenv)) != 0);
365 }
366 eqp++;
367 }
368
369 if (export)
370 {
371 (void)fputs("export ", fp);
372 fwrite(*atenv, sizeof(char), eqp-*atenv, fp);
373 for(ap = eqp;*ap != '\0'; ap++)
374 {
375 if (*ap == '\n')
376 fprintf(fp, "\"\n\"");
377 else
378 {
379 if (!isalnum(*ap)) {
380 switch (*ap) {
381 case '%': case '/': case '{': case '[':
382 case ']': case '=': case '}': case '@':
383 case '+': case '#': case ',': case '.':
384 case ':': case '-': case '_':
385 break;
386 default:
387 fputc('\\', fp);
388 break;
389 }
390 }
391 fputc(*ap, fp);
392 }
393 }
394 fputc('\n', fp);
395
396 }
397 }
398 /* Cd to the directory at the time and write out all the
399 * commands the user supplies from stdin.
400 */
401 fprintf(fp, "cd ");
402 for (ap = cwdname(); *ap != '\0'; ap++)
403 {
404 if (*ap == '\n')
405 fprintf(fp, "\"\n\"");
406 else
407 {
408 if (*ap != '/' && !isalnum(*ap))
409 fputc('\\', fp);
410
411 fputc(*ap, fp);
412 }
413 }
414 /* Test cd's exit status: die if the original directory has been
415 * removed, become unreadable or whatever
416 */
417 fprintf(fp, " || {\n\t echo 'Execution directory "
418 "inaccessible' >&2\n\t exit 1\n}\n");
419
420 while((ch = getchar()) != EOF)
421 fputc(ch, fp);
422
423 fprintf(fp, "\n");
424 if (ferror(fp))
425 panic("output error");
426
427 if (ferror(stdin))
428 panic("input error");
429
430 fclose(fp);
431
432 /* Set the x bit so that we're ready to start executing
433 */
434
435 if (fchmod(fd2, S_IRUSR | S_IWUSR | S_IXUSR) < 0)
436 perr("cannot give away file");
437
438 close(fd2);
439 fprintf(stderr, "Job %ld will be executed using /bin/sh\n", jobno);
440 }
441
442 static int
in_job_list(long job,long * joblist,int len)443 in_job_list(long job, long *joblist, int len)
444 {
445 int i;
446
447 for (i = 0; i < len; i++)
448 if (job == joblist[i])
449 return 1;
450
451 return 0;
452 }
453
454 static void
list_jobs(long * joblist,int len)455 list_jobs(long *joblist, int len)
456 {
457 /* List all a user's jobs in the queue, by looping through ATJOB_DIR,
458 * or everybody's if we are root
459 */
460 struct passwd *pw;
461 DIR *spool;
462 struct dirent *dirent;
463 struct stat buf;
464 struct tm runtime;
465 unsigned long ctm;
466 char queue;
467 long jobno;
468 time_t runtimer;
469 char timestr[TIMESIZE];
470 int first=1;
471
472 #ifdef __FreeBSD__
473 (void) setlocale(LC_TIME, "");
474 #endif
475
476 PRIV_START
477
478 if (chdir(ATJOB_DIR) != 0)
479 perr("cannot change to " ATJOB_DIR);
480
481 if ((spool = opendir(".")) == NULL)
482 perr("cannot open " ATJOB_DIR);
483
484 /* Loop over every file in the directory
485 */
486 while((dirent = readdir(spool)) != NULL) {
487 if (stat(dirent->d_name, &buf) != 0)
488 perr("cannot stat in " ATJOB_DIR);
489
490 /* See it's a regular file and has its x bit turned on and
491 * is the user's
492 */
493 if (!S_ISREG(buf.st_mode)
494 || ((buf.st_uid != real_uid) && ! (real_uid == 0))
495 || !(S_IXUSR & buf.st_mode || atverify))
496 continue;
497
498 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
499 continue;
500
501 /* If jobs are given, only list those jobs */
502 if (joblist && !in_job_list(jobno, joblist, len))
503 continue;
504
505 if (atqueue && (queue != atqueue))
506 continue;
507
508 runtimer = 60*(time_t) ctm;
509 runtime = *localtime(&runtimer);
510 strftime(timestr, TIMESIZE, "%+", &runtime);
511 if (first) {
512 printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n");
513 first=0;
514 }
515 pw = getpwuid(buf.st_uid);
516
517 printf("%s\t%-16s%c%s\t%ld\n",
518 timestr,
519 pw ? pw->pw_name : "???",
520 queue,
521 (S_IXUSR & buf.st_mode) ? "":"(done)",
522 jobno);
523 }
524 PRIV_END
525 closedir(spool);
526 }
527
528 static void
process_jobs(int argc,char ** argv,int what)529 process_jobs(int argc, char **argv, int what)
530 {
531 /* Delete every argument (job - ID) given
532 */
533 int i;
534 int rc;
535 int nofJobs;
536 int nofDone;
537 int statErrno;
538 struct stat buf;
539 DIR *spool;
540 struct dirent *dirent;
541 unsigned long ctm;
542 char queue;
543 long jobno;
544
545 nofJobs = argc - optind;
546 nofDone = 0;
547
548 PRIV_START
549
550 if (chdir(ATJOB_DIR) != 0)
551 perr("cannot change to " ATJOB_DIR);
552
553 if ((spool = opendir(".")) == NULL)
554 perr("cannot open " ATJOB_DIR);
555
556 PRIV_END
557
558 /* Loop over every file in the directory
559 */
560 while((dirent = readdir(spool)) != NULL) {
561
562 PRIV_START
563 rc = stat(dirent->d_name, &buf);
564 statErrno = errno;
565 PRIV_END
566 /* There's a race condition between readdir above and stat here:
567 * another atrm process could have removed the file from the spool
568 * directory under our nose. If this happens, stat will set errno to
569 * ENOENT, which we shouldn't treat as fatal.
570 */
571 if (rc != 0) {
572 if (statErrno == ENOENT)
573 continue;
574 else
575 perr("cannot stat in " ATJOB_DIR);
576 }
577
578 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
579 continue;
580
581 for (i=optind; i < argc; i++) {
582 if (atoi(argv[i]) == jobno) {
583 if ((buf.st_uid != real_uid) && !(real_uid == 0))
584 errx(EXIT_FAILURE, "%s: not owner", argv[i]);
585 switch (what) {
586 case ATRM:
587
588 PRIV_START
589
590 if (unlink(dirent->d_name) != 0)
591 perr(dirent->d_name);
592
593 PRIV_END
594
595 break;
596
597 case CAT:
598 {
599 FILE *fp;
600 int ch;
601
602 PRIV_START
603
604 fp = fopen(dirent->d_name,"r");
605
606 PRIV_END
607
608 if (!fp) {
609 perr("cannot open file");
610 }
611 while((ch = getc(fp)) != EOF) {
612 putchar(ch);
613 }
614 fclose(fp);
615 }
616 break;
617
618 default:
619 errx(EXIT_FAILURE, "internal error, process_jobs = %d",
620 what);
621 }
622
623 /* All arguments have been processed
624 */
625 if (++nofDone == nofJobs)
626 goto end;
627 }
628 }
629 }
630 end:
631 closedir(spool);
632 } /* delete_jobs */
633
634 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
635
636 static time_t
ttime(const char * arg)637 ttime(const char *arg)
638 {
639 /*
640 * This is pretty much a copy of stime_arg1() from touch.c. I changed
641 * the return value and the argument list because it's more convenient
642 * (IMO) to do everything in one place. - Joe Halpin
643 */
644 struct timeval tv[2];
645 time_t now;
646 struct tm *t;
647 int yearset;
648 char *p;
649
650 if (gettimeofday(&tv[0], NULL))
651 panic("Cannot get current time");
652
653 /* Start with the current time. */
654 now = tv[0].tv_sec;
655 if ((t = localtime(&now)) == NULL)
656 panic("localtime");
657 /* [[CC]YY]MMDDhhmm[.SS] */
658 if ((p = strchr(arg, '.')) == NULL)
659 t->tm_sec = 0; /* Seconds defaults to 0. */
660 else {
661 if (strlen(p + 1) != 2)
662 goto terr;
663 *p++ = '\0';
664 t->tm_sec = ATOI2(p);
665 }
666
667 yearset = 0;
668 switch(strlen(arg)) {
669 case 12: /* CCYYMMDDhhmm */
670 t->tm_year = ATOI2(arg);
671 t->tm_year *= 100;
672 yearset = 1;
673 /* FALLTHROUGH */
674 case 10: /* YYMMDDhhmm */
675 if (yearset) {
676 yearset = ATOI2(arg);
677 t->tm_year += yearset;
678 } else {
679 yearset = ATOI2(arg);
680 t->tm_year = yearset + 2000;
681 }
682 t->tm_year -= 1900; /* Convert to UNIX time. */
683 /* FALLTHROUGH */
684 case 8: /* MMDDhhmm */
685 t->tm_mon = ATOI2(arg);
686 --t->tm_mon; /* Convert from 01-12 to 00-11 */
687 t->tm_mday = ATOI2(arg);
688 t->tm_hour = ATOI2(arg);
689 t->tm_min = ATOI2(arg);
690 break;
691 default:
692 goto terr;
693 }
694
695 t->tm_isdst = -1; /* Figure out DST. */
696 tv[0].tv_sec = tv[1].tv_sec = mktime(t);
697 if (tv[0].tv_sec != -1)
698 return tv[0].tv_sec;
699 else
700 terr:
701 panic(
702 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
703 }
704
705 static long *
get_job_list(int argc,char * argv[],int * joblen)706 get_job_list(int argc, char *argv[], int *joblen)
707 {
708 int i, len;
709 long *joblist;
710 char *ep;
711
712 joblist = NULL;
713 len = argc;
714 if (len > 0) {
715 if ((joblist = malloc(len * sizeof(*joblist))) == NULL)
716 panic("out of memory");
717
718 for (i = 0; i < argc; i++) {
719 errno = 0;
720 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 ||
721 ep == argv[i] || *ep != '\0' || errno)
722 panic("invalid job number");
723 }
724 }
725
726 *joblen = len;
727 return joblist;
728 }
729
730 int
main(int argc,char ** argv)731 main(int argc, char **argv)
732 {
733 int c;
734 char queue = DEFAULT_AT_QUEUE;
735 char queue_set = 0;
736 char *pgm;
737
738 int program = AT; /* our default program */
739 const char *options = "q:f:t:rmvldbc"; /* default options for at */
740 time_t timer;
741 long *joblist;
742 int joblen;
743
744 joblist = NULL;
745 joblen = 0;
746 timer = -1;
747 RELINQUISH_PRIVS
748
749 /* Eat any leading paths
750 */
751 if ((pgm = strrchr(argv[0], '/')) == NULL)
752 pgm = argv[0];
753 else
754 pgm++;
755
756 namep = pgm;
757
758 /* find out what this program is supposed to do
759 */
760 if (strcmp(pgm, "atq") == 0) {
761 program = ATQ;
762 options = "q:v";
763 }
764 else if (strcmp(pgm, "atrm") == 0) {
765 program = ATRM;
766 options = "";
767 }
768 else if (strcmp(pgm, "batch") == 0) {
769 program = BATCH;
770 options = "f:q:mv";
771 }
772
773 /* process whatever options we can process
774 */
775 opterr=1;
776 while ((c=getopt(argc, argv, options)) != -1)
777 switch (c) {
778 case 'v': /* verify time settings */
779 atverify = 1;
780 break;
781
782 case 'm': /* send mail when job is complete */
783 send_mail = 1;
784 break;
785
786 case 'f':
787 atinput = optarg;
788 break;
789
790 case 'q': /* specify queue */
791 if (strlen(optarg) > 1)
792 usage();
793
794 atqueue = queue = *optarg;
795 if (!(islower(queue)||isupper(queue)))
796 usage();
797
798 queue_set = 1;
799 break;
800
801 case 'd':
802 warnx("-d is deprecated; use -r instead");
803 /* fall through to 'r' */
804
805 case 'r':
806 if (program != AT)
807 usage();
808
809 program = ATRM;
810 options = "";
811 break;
812
813 case 't':
814 if (program != AT)
815 usage();
816 timer = ttime(optarg);
817 break;
818
819 case 'l':
820 if (program != AT)
821 usage();
822
823 program = ATQ;
824 options = "q:";
825 break;
826
827 case 'b':
828 if (program != AT)
829 usage();
830
831 program = BATCH;
832 options = "f:q:mv";
833 break;
834
835 case 'c':
836 program = CAT;
837 options = "";
838 break;
839
840 default:
841 usage();
842 break;
843 }
844 /* end of options eating
845 */
846
847 /* select our program
848 */
849 if(!check_permission())
850 errx(EXIT_FAILURE, "you do not have permission to use this program");
851 switch (program) {
852 case ATQ:
853
854 REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
855
856 if (queue_set == 0)
857 joblist = get_job_list(argc - optind, argv + optind, &joblen);
858 list_jobs(joblist, joblen);
859 break;
860
861 case ATRM:
862
863 REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
864
865 process_jobs(argc, argv, ATRM);
866 break;
867
868 case CAT:
869
870 process_jobs(argc, argv, CAT);
871 break;
872
873 case AT:
874 /*
875 * If timer is > -1, then the user gave the time with -t. In that
876 * case, it's already been set. If not, set it now.
877 */
878 if (timer == -1)
879 timer = parsetime(argc, argv);
880
881 if (atverify)
882 {
883 struct tm *tm = localtime(&timer);
884 fprintf(stderr, "%s\n", asctime(tm));
885 }
886 writefile(timer, queue);
887 break;
888
889 case BATCH:
890 if (queue_set)
891 queue = toupper(queue);
892 else
893 queue = DEFAULT_BATCH_QUEUE;
894
895 if (argc > optind)
896 timer = parsetime(argc, argv);
897 else
898 timer = time(NULL);
899
900 if (atverify)
901 {
902 struct tm *tm = localtime(&timer);
903 fprintf(stderr, "%s\n", asctime(tm));
904 }
905
906 writefile(timer, queue);
907 break;
908
909 default:
910 panic("internal error");
911 break;
912 }
913 exit(EXIT_SUCCESS);
914 }
915