1 /*-
2 * at.c : Put file into atrun queue
3 *
4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 __FBSDID("$FreeBSD$");
34
35 #define _USE_BSD 1
36
37 /* System Headers */
38
39 #include <sys/param.h>
40 #include <sys/stat.h>
41 #include <sys/time.h>
42 #include <sys/wait.h>
43 #include <ctype.h>
44 #include <dirent.h>
45 #include <err.h>
46 #include <errno.h>
47 #include <fcntl.h>
48 #ifndef __FreeBSD__
49 #include <getopt.h>
50 #endif
51 #ifdef __FreeBSD__
52 #include <locale.h>
53 #endif
54 #include <pwd.h>
55 #include <signal.h>
56 #include <stddef.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60 #include <time.h>
61 #include <unistd.h>
62
63 /* Local headers */
64
65 #include "at.h"
66 #include "panic.h"
67 #include "parsetime.h"
68 #include "perm.h"
69
70 #define MAIN
71 #include "privs.h"
72
73 /* Macros */
74
75 #ifndef ATJOB_DIR
76 #define ATJOB_DIR "/usr/spool/atjobs/"
77 #endif
78
79 #ifndef LFILE
80 #define LFILE ATJOB_DIR ".lockfile"
81 #endif
82
83 #ifndef ATJOB_MX
84 #define ATJOB_MX 255
85 #endif
86
87 #define ALARMC 10 /* Number of seconds to wait for timeout */
88
89 #define SIZE 255
90 #define TIMESIZE 50
91
92 enum { ATQ, ATRM, AT, BATCH, CAT }; /* what program we want to run */
93
94 /* File scope variables */
95
96 static const char *no_export[] = {
97 "TERM", "TERMCAP", "DISPLAY", "_"
98 };
99 static int send_mail = 0;
100 static char *atinput = NULL; /* where to get input from */
101 static char atqueue = 0; /* which queue to examine for jobs (atq) */
102
103 /* External variables */
104
105 extern char **environ;
106 int fcreated;
107 char atfile[] = ATJOB_DIR "12345678901234";
108 char atverify = 0; /* verify time instead of queuing job */
109 char *namep;
110
111 /* Function declarations */
112
113 static void sigc(int signo);
114 static void alarmc(int signo);
115 static char *cwdname(void);
116 static void writefile(time_t runtimer, char queue);
117 static void list_jobs(long *, int);
118 static long nextjob(void);
119 static time_t ttime(const char *arg);
120 static int in_job_list(long, long *, int);
121 static long *get_job_list(int, char *[], int *);
122
123 /* Signal catching functions */
124
sigc(int signo __unused)125 static void sigc(int signo __unused)
126 {
127 /* If the user presses ^C, remove the spool file and exit
128 */
129 if (fcreated)
130 {
131 PRIV_START
132 unlink(atfile);
133 PRIV_END
134 }
135
136 _exit(EXIT_FAILURE);
137 }
138
alarmc(int signo __unused)139 static void alarmc(int signo __unused)
140 {
141 char buf[1024];
142
143 /* Time out after some seconds. */
144 strlcpy(buf, namep, sizeof(buf));
145 strlcat(buf, ": file locking timed out\n", sizeof(buf));
146 write(STDERR_FILENO, buf, strlen(buf));
147 sigc(0);
148 }
149
150 /* Local functions */
151
cwdname(void)152 static char *cwdname(void)
153 {
154 /* Read in the current directory; the name will be overwritten on
155 * subsequent calls.
156 */
157 static char *ptr = NULL;
158 static size_t size = SIZE;
159
160 if (ptr == NULL)
161 if ((ptr = malloc(size)) == NULL)
162 errx(EXIT_FAILURE, "virtual memory exhausted");
163
164 while (1)
165 {
166 if (ptr == NULL)
167 panic("out of memory");
168
169 if (getcwd(ptr, size-1) != NULL)
170 return ptr;
171
172 if (errno != ERANGE)
173 perr("cannot get directory");
174
175 free (ptr);
176 size += SIZE;
177 if ((ptr = malloc(size)) == NULL)
178 errx(EXIT_FAILURE, "virtual memory exhausted");
179 }
180 }
181
182 static long
nextjob(void)183 nextjob(void)
184 {
185 long jobno;
186 FILE *fid;
187
188 if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != NULL) {
189 if (fscanf(fid, "%5lx", &jobno) == 1) {
190 rewind(fid);
191 jobno = (1+jobno) % 0xfffff; /* 2^20 jobs enough? */
192 fprintf(fid, "%05lx\n", jobno);
193 }
194 else
195 jobno = EOF;
196 fclose(fid);
197 return jobno;
198 }
199 else if ((fid = fopen(ATJOB_DIR ".SEQ", "w")) != NULL) {
200 fprintf(fid, "%05lx\n", jobno = 1);
201 fclose(fid);
202 return 1;
203 }
204 return EOF;
205 }
206
207 static void
writefile(time_t runtimer,char queue)208 writefile(time_t runtimer, char queue)
209 {
210 /* This does most of the work if at or batch are invoked for writing a job.
211 */
212 long jobno;
213 char *ap, *ppos, *mailname;
214 struct passwd *pass_entry;
215 struct stat statbuf;
216 int fdes, lockdes, fd2;
217 FILE *fp, *fpin;
218 struct sigaction act;
219 char **atenv;
220 int ch;
221 mode_t cmask;
222 struct flock lock;
223
224 #ifdef __FreeBSD__
225 (void) setlocale(LC_TIME, "");
226 #endif
227
228 /* Install the signal handler for SIGINT; terminate after removing the
229 * spool file if necessary
230 */
231 act.sa_handler = sigc;
232 sigemptyset(&(act.sa_mask));
233 act.sa_flags = 0;
234
235 sigaction(SIGINT, &act, NULL);
236
237 ppos = atfile + strlen(ATJOB_DIR);
238
239 /* Loop over all possible file names for running something at this
240 * particular time, see if a file is there; the first empty slot at any
241 * particular time is used. Lock the file LFILE first to make sure
242 * we're alone when doing this.
243 */
244
245 PRIV_START
246
247 if ((lockdes = open(LFILE, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR)) < 0)
248 perr("cannot open lockfile " LFILE);
249
250 lock.l_type = F_WRLCK; lock.l_whence = SEEK_SET; lock.l_start = 0;
251 lock.l_len = 0;
252
253 act.sa_handler = alarmc;
254 sigemptyset(&(act.sa_mask));
255 act.sa_flags = 0;
256
257 /* Set an alarm so a timeout occurs after ALARMC seconds, in case
258 * something is seriously broken.
259 */
260 sigaction(SIGALRM, &act, NULL);
261 alarm(ALARMC);
262 fcntl(lockdes, F_SETLKW, &lock);
263 alarm(0);
264
265 if ((jobno = nextjob()) == EOF)
266 perr("cannot generate job number");
267
268 sprintf(ppos, "%c%5lx%8lx", queue,
269 jobno, (unsigned long) (runtimer/60));
270
271 for(ap=ppos; *ap != '\0'; ap ++)
272 if (*ap == ' ')
273 *ap = '0';
274
275 if (stat(atfile, &statbuf) != 0)
276 if (errno != ENOENT)
277 perr("cannot access " ATJOB_DIR);
278
279 /* Create the file. The x bit is only going to be set after it has
280 * been completely written out, to make sure it is not executed in the
281 * meantime. To make sure they do not get deleted, turn off their r
282 * bit. Yes, this is a kluge.
283 */
284 cmask = umask(S_IRUSR | S_IWUSR | S_IXUSR);
285 if ((fdes = creat(atfile, O_WRONLY)) == -1)
286 perr("cannot create atjob file");
287
288 if ((fd2 = dup(fdes)) <0)
289 perr("error in dup() of job file");
290
291 if(fchown(fd2, real_uid, real_gid) != 0)
292 perr("cannot give away file");
293
294 PRIV_END
295
296 /* We no longer need suid root; now we just need to be able to write
297 * to the directory, if necessary.
298 */
299
300 REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
301
302 /* We've successfully created the file; let's set the flag so it
303 * gets removed in case of an interrupt or error.
304 */
305 fcreated = 1;
306
307 /* Now we can release the lock, so other people can access it
308 */
309 lock.l_type = F_UNLCK; lock.l_whence = SEEK_SET; lock.l_start = 0;
310 lock.l_len = 0;
311 fcntl(lockdes, F_SETLKW, &lock);
312 close(lockdes);
313
314 if((fp = fdopen(fdes, "w")) == NULL)
315 panic("cannot reopen atjob file");
316
317 /* Get the userid to mail to, first by trying getlogin(),
318 * then from LOGNAME, finally from getpwuid().
319 */
320 mailname = getlogin();
321 if (mailname == NULL)
322 mailname = getenv("LOGNAME");
323
324 if ((mailname == NULL) || (mailname[0] == '\0')
325 || (strlen(mailname) >= MAXLOGNAME) || (getpwnam(mailname)==NULL))
326 {
327 pass_entry = getpwuid(real_uid);
328 if (pass_entry != NULL)
329 mailname = pass_entry->pw_name;
330 }
331
332 if (atinput != (char *) NULL)
333 {
334 fpin = freopen(atinput, "r", stdin);
335 if (fpin == NULL)
336 perr("cannot open input file");
337 }
338 fprintf(fp, "#!/bin/sh\n# atrun uid=%ld gid=%ld\n# mail %*s %d\n",
339 (long) real_uid, (long) real_gid, MAXLOGNAME - 1, mailname,
340 send_mail);
341
342 /* Write out the umask at the time of invocation
343 */
344 fprintf(fp, "umask %lo\n", (unsigned long) cmask);
345
346 /* Write out the environment. Anything that may look like a
347 * special character to the shell is quoted, except for \n, which is
348 * done with a pair of "'s. Don't export the no_export list (such
349 * as TERM or DISPLAY) because we don't want these.
350 */
351 for (atenv= environ; *atenv != NULL; atenv++)
352 {
353 int export = 1;
354 char *eqp;
355
356 eqp = strchr(*atenv, '=');
357 if (eqp == NULL)
358 eqp = *atenv;
359 else
360 {
361 size_t i;
362 for (i = 0; i < nitems(no_export); i++)
363 {
364 export = export
365 && (strncmp(*atenv, no_export[i],
366 (size_t) (eqp-*atenv)) != 0);
367 }
368 eqp++;
369 }
370
371 if (export)
372 {
373 (void)fputs("export ", fp);
374 fwrite(*atenv, sizeof(char), eqp-*atenv, fp);
375 for(ap = eqp;*ap != '\0'; ap++)
376 {
377 if (*ap == '\n')
378 fprintf(fp, "\"\n\"");
379 else
380 {
381 if (!isalnum(*ap)) {
382 switch (*ap) {
383 case '%': case '/': case '{': case '[':
384 case ']': case '=': case '}': case '@':
385 case '+': case '#': case ',': case '.':
386 case ':': case '-': case '_':
387 break;
388 default:
389 fputc('\\', fp);
390 break;
391 }
392 }
393 fputc(*ap, fp);
394 }
395 }
396 fputc('\n', fp);
397
398 }
399 }
400 /* Cd to the directory at the time and write out all the
401 * commands the user supplies from stdin.
402 */
403 fprintf(fp, "cd ");
404 for (ap = cwdname(); *ap != '\0'; ap++)
405 {
406 if (*ap == '\n')
407 fprintf(fp, "\"\n\"");
408 else
409 {
410 if (*ap != '/' && !isalnum(*ap))
411 fputc('\\', fp);
412
413 fputc(*ap, fp);
414 }
415 }
416 /* Test cd's exit status: die if the original directory has been
417 * removed, become unreadable or whatever
418 */
419 fprintf(fp, " || {\n\t echo 'Execution directory "
420 "inaccessible' >&2\n\t exit 1\n}\n");
421
422 while((ch = getchar()) != EOF)
423 fputc(ch, fp);
424
425 fprintf(fp, "\n");
426 if (ferror(fp))
427 panic("output error");
428
429 if (ferror(stdin))
430 panic("input error");
431
432 fclose(fp);
433
434 /* Set the x bit so that we're ready to start executing
435 */
436
437 if (fchmod(fd2, S_IRUSR | S_IWUSR | S_IXUSR) < 0)
438 perr("cannot give away file");
439
440 close(fd2);
441 fprintf(stderr, "Job %ld will be executed using /bin/sh\n", jobno);
442 }
443
444 static int
in_job_list(long job,long * joblist,int len)445 in_job_list(long job, long *joblist, int len)
446 {
447 int i;
448
449 for (i = 0; i < len; i++)
450 if (job == joblist[i])
451 return 1;
452
453 return 0;
454 }
455
456 static void
list_jobs(long * joblist,int len)457 list_jobs(long *joblist, int len)
458 {
459 /* List all a user's jobs in the queue, by looping through ATJOB_DIR,
460 * or everybody's if we are root
461 */
462 struct passwd *pw;
463 DIR *spool;
464 struct dirent *dirent;
465 struct stat buf;
466 struct tm runtime;
467 unsigned long ctm;
468 char queue;
469 long jobno;
470 time_t runtimer;
471 char timestr[TIMESIZE];
472 int first=1;
473
474 #ifdef __FreeBSD__
475 (void) setlocale(LC_TIME, "");
476 #endif
477
478 PRIV_START
479
480 if (chdir(ATJOB_DIR) != 0)
481 perr("cannot change to " ATJOB_DIR);
482
483 if ((spool = opendir(".")) == NULL)
484 perr("cannot open " ATJOB_DIR);
485
486 /* Loop over every file in the directory
487 */
488 while((dirent = readdir(spool)) != NULL) {
489 if (stat(dirent->d_name, &buf) != 0)
490 perr("cannot stat in " ATJOB_DIR);
491
492 /* See it's a regular file and has its x bit turned on and
493 * is the user's
494 */
495 if (!S_ISREG(buf.st_mode)
496 || ((buf.st_uid != real_uid) && ! (real_uid == 0))
497 || !(S_IXUSR & buf.st_mode || atverify))
498 continue;
499
500 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
501 continue;
502
503 /* If jobs are given, only list those jobs */
504 if (joblist && !in_job_list(jobno, joblist, len))
505 continue;
506
507 if (atqueue && (queue != atqueue))
508 continue;
509
510 runtimer = 60*(time_t) ctm;
511 runtime = *localtime(&runtimer);
512 strftime(timestr, TIMESIZE, "%+", &runtime);
513 if (first) {
514 printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n");
515 first=0;
516 }
517 pw = getpwuid(buf.st_uid);
518
519 printf("%s\t%-16s%c%s\t%ld\n",
520 timestr,
521 pw ? pw->pw_name : "???",
522 queue,
523 (S_IXUSR & buf.st_mode) ? "":"(done)",
524 jobno);
525 }
526 PRIV_END
527 closedir(spool);
528 }
529
530 static void
process_jobs(int argc,char ** argv,int what)531 process_jobs(int argc, char **argv, int what)
532 {
533 /* Delete every argument (job - ID) given
534 */
535 int i;
536 int rc;
537 int nofJobs;
538 int nofDone;
539 int statErrno;
540 struct stat buf;
541 DIR *spool;
542 struct dirent *dirent;
543 unsigned long ctm;
544 char queue;
545 long jobno;
546
547 nofJobs = argc - optind;
548 nofDone = 0;
549
550 PRIV_START
551
552 if (chdir(ATJOB_DIR) != 0)
553 perr("cannot change to " ATJOB_DIR);
554
555 if ((spool = opendir(".")) == NULL)
556 perr("cannot open " ATJOB_DIR);
557
558 PRIV_END
559
560 /* Loop over every file in the directory
561 */
562 while((dirent = readdir(spool)) != NULL) {
563
564 PRIV_START
565 rc = stat(dirent->d_name, &buf);
566 statErrno = errno;
567 PRIV_END
568 /* There's a race condition between readdir above and stat here:
569 * another atrm process could have removed the file from the spool
570 * directory under our nose. If this happens, stat will set errno to
571 * ENOENT, which we shouldn't treat as fatal.
572 */
573 if (rc != 0) {
574 if (statErrno == ENOENT)
575 continue;
576 else
577 perr("cannot stat in " ATJOB_DIR);
578 }
579
580 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
581 continue;
582
583 for (i=optind; i < argc; i++) {
584 if (atoi(argv[i]) == jobno) {
585 if ((buf.st_uid != real_uid) && !(real_uid == 0))
586 errx(EXIT_FAILURE, "%s: not owner", argv[i]);
587 switch (what) {
588 case ATRM:
589
590 PRIV_START
591
592 if (unlink(dirent->d_name) != 0)
593 perr(dirent->d_name);
594
595 PRIV_END
596
597 break;
598
599 case CAT:
600 {
601 FILE *fp;
602 int ch;
603
604 PRIV_START
605
606 fp = fopen(dirent->d_name,"r");
607
608 PRIV_END
609
610 if (!fp) {
611 perr("cannot open file");
612 }
613 while((ch = getc(fp)) != EOF) {
614 putchar(ch);
615 }
616 fclose(fp);
617 }
618 break;
619
620 default:
621 errx(EXIT_FAILURE, "internal error, process_jobs = %d",
622 what);
623 }
624
625 /* All arguments have been processed
626 */
627 if (++nofDone == nofJobs)
628 goto end;
629 }
630 }
631 }
632 end:
633 closedir(spool);
634 } /* delete_jobs */
635
636 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
637
638 static time_t
ttime(const char * arg)639 ttime(const char *arg)
640 {
641 /*
642 * This is pretty much a copy of stime_arg1() from touch.c. I changed
643 * the return value and the argument list because it's more convenient
644 * (IMO) to do everything in one place. - Joe Halpin
645 */
646 struct timeval tv[2];
647 time_t now;
648 struct tm *t;
649 int yearset;
650 char *p;
651
652 if (gettimeofday(&tv[0], NULL))
653 panic("Cannot get current time");
654
655 /* Start with the current time. */
656 now = tv[0].tv_sec;
657 if ((t = localtime(&now)) == NULL)
658 panic("localtime");
659 /* [[CC]YY]MMDDhhmm[.SS] */
660 if ((p = strchr(arg, '.')) == NULL)
661 t->tm_sec = 0; /* Seconds defaults to 0. */
662 else {
663 if (strlen(p + 1) != 2)
664 goto terr;
665 *p++ = '\0';
666 t->tm_sec = ATOI2(p);
667 }
668
669 yearset = 0;
670 switch(strlen(arg)) {
671 case 12: /* CCYYMMDDhhmm */
672 t->tm_year = ATOI2(arg);
673 t->tm_year *= 100;
674 yearset = 1;
675 /* FALLTHROUGH */
676 case 10: /* YYMMDDhhmm */
677 if (yearset) {
678 yearset = ATOI2(arg);
679 t->tm_year += yearset;
680 } else {
681 yearset = ATOI2(arg);
682 t->tm_year = yearset + 2000;
683 }
684 t->tm_year -= 1900; /* Convert to UNIX time. */
685 /* FALLTHROUGH */
686 case 8: /* MMDDhhmm */
687 t->tm_mon = ATOI2(arg);
688 --t->tm_mon; /* Convert from 01-12 to 00-11 */
689 t->tm_mday = ATOI2(arg);
690 t->tm_hour = ATOI2(arg);
691 t->tm_min = ATOI2(arg);
692 break;
693 default:
694 goto terr;
695 }
696
697 t->tm_isdst = -1; /* Figure out DST. */
698 tv[0].tv_sec = tv[1].tv_sec = mktime(t);
699 if (tv[0].tv_sec != -1)
700 return tv[0].tv_sec;
701 else
702 terr:
703 panic(
704 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
705 }
706
707 static long *
get_job_list(int argc,char * argv[],int * joblen)708 get_job_list(int argc, char *argv[], int *joblen)
709 {
710 int i, len;
711 long *joblist;
712 char *ep;
713
714 joblist = NULL;
715 len = argc;
716 if (len > 0) {
717 if ((joblist = malloc(len * sizeof(*joblist))) == NULL)
718 panic("out of memory");
719
720 for (i = 0; i < argc; i++) {
721 errno = 0;
722 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 ||
723 ep == argv[i] || *ep != '\0' || errno)
724 panic("invalid job number");
725 }
726 }
727
728 *joblen = len;
729 return joblist;
730 }
731
732 int
main(int argc,char ** argv)733 main(int argc, char **argv)
734 {
735 int c;
736 char queue = DEFAULT_AT_QUEUE;
737 char queue_set = 0;
738 char *pgm;
739
740 int program = AT; /* our default program */
741 const char *options = "q:f:t:rmvldbc"; /* default options for at */
742 time_t timer;
743 long *joblist;
744 int joblen;
745
746 joblist = NULL;
747 joblen = 0;
748 timer = -1;
749 RELINQUISH_PRIVS
750
751 /* Eat any leading paths
752 */
753 if ((pgm = strrchr(argv[0], '/')) == NULL)
754 pgm = argv[0];
755 else
756 pgm++;
757
758 namep = pgm;
759
760 /* find out what this program is supposed to do
761 */
762 if (strcmp(pgm, "atq") == 0) {
763 program = ATQ;
764 options = "q:v";
765 }
766 else if (strcmp(pgm, "atrm") == 0) {
767 program = ATRM;
768 options = "";
769 }
770 else if (strcmp(pgm, "batch") == 0) {
771 program = BATCH;
772 options = "f:q:mv";
773 }
774
775 /* process whatever options we can process
776 */
777 opterr=1;
778 while ((c=getopt(argc, argv, options)) != -1)
779 switch (c) {
780 case 'v': /* verify time settings */
781 atverify = 1;
782 break;
783
784 case 'm': /* send mail when job is complete */
785 send_mail = 1;
786 break;
787
788 case 'f':
789 atinput = optarg;
790 break;
791
792 case 'q': /* specify queue */
793 if (strlen(optarg) > 1)
794 usage();
795
796 atqueue = queue = *optarg;
797 if (!(islower(queue)||isupper(queue)))
798 usage();
799
800 queue_set = 1;
801 break;
802
803 case 'd':
804 warnx("-d is deprecated; use -r instead");
805 /* fall through to 'r' */
806
807 case 'r':
808 if (program != AT)
809 usage();
810
811 program = ATRM;
812 options = "";
813 break;
814
815 case 't':
816 if (program != AT)
817 usage();
818 timer = ttime(optarg);
819 break;
820
821 case 'l':
822 if (program != AT)
823 usage();
824
825 program = ATQ;
826 options = "q:";
827 break;
828
829 case 'b':
830 if (program != AT)
831 usage();
832
833 program = BATCH;
834 options = "f:q:mv";
835 break;
836
837 case 'c':
838 program = CAT;
839 options = "";
840 break;
841
842 default:
843 usage();
844 break;
845 }
846 /* end of options eating
847 */
848
849 /* select our program
850 */
851 if(!check_permission())
852 errx(EXIT_FAILURE, "you do not have permission to use this program");
853 switch (program) {
854 case ATQ:
855
856 REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
857
858 if (queue_set == 0)
859 joblist = get_job_list(argc - optind, argv + optind, &joblen);
860 list_jobs(joblist, joblen);
861 break;
862
863 case ATRM:
864
865 REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
866
867 process_jobs(argc, argv, ATRM);
868 break;
869
870 case CAT:
871
872 process_jobs(argc, argv, CAT);
873 break;
874
875 case AT:
876 /*
877 * If timer is > -1, then the user gave the time with -t. In that
878 * case, it's already been set. If not, set it now.
879 */
880 if (timer == -1)
881 timer = parsetime(argc, argv);
882
883 if (atverify)
884 {
885 struct tm *tm = localtime(&timer);
886 fprintf(stderr, "%s\n", asctime(tm));
887 }
888 writefile(timer, queue);
889 break;
890
891 case BATCH:
892 if (queue_set)
893 queue = toupper(queue);
894 else
895 queue = DEFAULT_BATCH_QUEUE;
896
897 if (argc > optind)
898 timer = parsetime(argc, argv);
899 else
900 timer = time(NULL);
901
902 if (atverify)
903 {
904 struct tm *tm = localtime(&timer);
905 fprintf(stderr, "%s\n", asctime(tm));
906 }
907
908 writefile(timer, queue);
909 break;
910
911 default:
912 panic("internal error");
913 break;
914 }
915 exit(EXIT_SUCCESS);
916 }
917