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