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 * $FreeBSD: src/usr.bin/at/at.c,v 1.30 2007/09/21 01:55:11 kevlo Exp $ 29 * $DragonFly: src/usr.bin/at/at.c,v 1.9 2007/09/22 20:22:51 pavalos Exp $ 30 */ 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 #include <langinfo.h> 46 #include <locale.h> 47 #include <pwd.h> 48 #include <signal.h> 49 #include <stddef.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <time.h> 54 #include <unistd.h> 55 56 /* Local headers */ 57 58 #include "at.h" 59 #include "panic.h" 60 #include "parsetime.h" 61 #include "perm.h" 62 63 #define MAIN 64 #include "privs.h" 65 66 /* Macros */ 67 68 #ifndef ATJOB_DIR 69 #define ATJOB_DIR "/usr/spool/atjobs/" 70 #endif 71 72 #ifndef LFILE 73 #define LFILE ATJOB_DIR ".lockfile" 74 #endif 75 76 #ifndef ATJOB_MX 77 #define ATJOB_MX 255 78 #endif 79 80 #define ALARMC 10 /* Number of seconds to wait for timeout */ 81 82 #define SIZE 255 83 #define TIMESIZE 50 84 85 enum { ATQ, ATRM, AT, BATCH, CAT }; /* what program we want to run */ 86 87 /* File scope variables */ 88 89 const char *no_export[] = 90 { 91 "TERM", "TERMCAP", "DISPLAY", "_" 92 } ; 93 static int send_mail = 0; 94 95 /* External variables */ 96 uid_t real_uid, effective_uid; 97 gid_t real_gid, effective_gid; 98 99 extern char **environ; 100 int fcreated; 101 char atfile[sizeof(ATJOB_DIR) + 14] = ATJOB_DIR; 102 103 char *atinput = NULL; /* where to get input from */ 104 char atqueue = 0; /* which queue to examine for jobs (atq) */ 105 char atverify = 0; /* verify time instead of queuing job */ 106 char *namep; 107 108 /* Function declarations */ 109 110 static void sigc(int signo); 111 static void alarmc(int signo); 112 static char *cwdname(void); 113 static void writefile(time_t runtimer, char queue); 114 static void list_jobs(long *, int); 115 static long nextjob(void); 116 static time_t ttime(const char *arg); 117 static char * timer2str(time_t runtimer); 118 static int in_job_list(long, long *, int); 119 static long *get_job_list(int, char *[], int *); 120 121 /* Signal catching functions */ 122 123 static void 124 sigc(int signo __unused) 125 { 126 /* If the user presses ^C, remove the spool file and exit 127 */ 128 if (fcreated) 129 { 130 PRIV_START 131 unlink(atfile); 132 PRIV_END 133 } 134 135 _exit(EXIT_FAILURE); 136 } 137 138 static void 139 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 */ 151 152 static char * 153 cwdname(void) 154 { 155 /* Read in the current directory; the name will be overwritten on 156 * subsequent calls. 157 */ 158 static char *ptr = NULL; 159 static size_t size = SIZE; 160 161 if (ptr == NULL) 162 if ((ptr = malloc(size)) == NULL) 163 errx(EXIT_FAILURE, "virtual memory exhausted"); 164 165 while (1) 166 { 167 if (ptr == NULL) 168 panic("out of memory"); 169 170 if (getcwd(ptr, size-1) != NULL) 171 return ptr; 172 173 if (errno != ERANGE) 174 perr("cannot get directory"); 175 176 free (ptr); 177 size += SIZE; 178 if ((ptr = malloc(size)) == NULL) 179 errx(EXIT_FAILURE, "virtual memory exhausted"); 180 } 181 } 182 183 static long 184 nextjob(void) 185 { 186 long jobno; 187 FILE *fid; 188 189 if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != NULL) { 190 if (fscanf(fid, "%5lx", &jobno) == 1) { 191 rewind(fid); 192 jobno = (1+jobno) % 0xfffff; /* 2^20 jobs enough? */ 193 fprintf(fid, "%05lx\n", jobno); 194 } 195 else 196 jobno = EOF; 197 fclose(fid); 198 return jobno; 199 } 200 else if ((fid = fopen(ATJOB_DIR ".SEQ", "w")) != NULL) { 201 fprintf(fid, "%05lx\n", jobno = 1); 202 fclose(fid); 203 return 1; 204 } 205 return EOF; 206 } 207 208 static void 209 writefile(time_t runtimer, char queue) 210 { 211 /* This does most of the work if at or batch are invoked for writing a job. 212 */ 213 long jobno; 214 char *ap, *ppos, *mailname; 215 struct passwd *pass_entry; 216 struct stat statbuf; 217 int fdes, lockdes, fd2; 218 FILE *fp, *fpin; 219 struct sigaction act; 220 char **atenv; 221 int ch; 222 mode_t cmask; 223 struct flock lock; 224 225 setlocale(LC_TIME, ""); 226 227 /* Install the signal handler for SIGINT; terminate after removing the 228 * spool file if necessary 229 */ 230 act.sa_handler = sigc; 231 sigemptyset(&(act.sa_mask)); 232 act.sa_flags = 0; 233 234 sigaction(SIGINT, &act, NULL); 235 236 /* Loop over all possible file names for running something at this 237 * particular time, see if a file is there; the first empty slot at any 238 * particular time is used. Lock the file LFILE first to make sure 239 * we're alone when doing this. 240 */ 241 242 PRIV_START 243 244 if ((lockdes = open(LFILE, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR)) < 0) 245 perr("cannot open lockfile " LFILE); 246 247 lock.l_type = F_WRLCK; lock.l_whence = SEEK_SET; lock.l_start = 0; 248 lock.l_len = 0; 249 250 act.sa_handler = alarmc; 251 sigemptyset(&(act.sa_mask)); 252 act.sa_flags = 0; 253 254 /* Set an alarm so a timeout occurs after ALARMC seconds, in case 255 * something is seriously broken. 256 */ 257 sigaction(SIGALRM, &act, NULL); 258 alarm(ALARMC); 259 fcntl(lockdes, F_SETLKW, &lock); 260 alarm(0); 261 262 if ((jobno = nextjob()) == EOF) 263 perr("cannot generate job number"); 264 265 ppos = atfile + strlen(atfile); 266 snprintf(ppos, sizeof(atfile) - strlen(atfile), "%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 != 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 (ap == NULL) 356 eqp = *atenv; 357 else 358 { 359 size_t i; 360 for (i=0; i<sizeof(no_export)/sizeof(no_export[0]); 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 fwrite(*atenv, sizeof(char), eqp-*atenv, fp); 372 for(ap = eqp;*ap != '\0'; ap++) 373 { 374 if (*ap == '\n') 375 fprintf(fp, "\"\n\""); 376 else 377 { 378 if (!isalnum(*ap)) { 379 switch (*ap) { 380 case '%': case '/': case '{': case '[': 381 case ']': case '=': case '}': case '@': 382 case '+': case '#': case ',': case '.': 383 case ':': case '-': case '_': 384 break; 385 default: 386 fputc('\\', fp); 387 break; 388 } 389 } 390 fputc(*ap, fp); 391 } 392 } 393 fputs("; export ", fp); 394 fwrite(*atenv, sizeof(char), eqp-*atenv -1, fp); 395 fputc('\n', fp); 396 397 } 398 } 399 /* Cd to the directory at the time and write out all the 400 * commands the user supplies from stdin. 401 */ 402 fprintf(fp, "cd "); 403 for (ap = cwdname(); *ap != '\0'; ap++) 404 { 405 if (*ap == '\n') 406 fprintf(fp, "\"\n\""); 407 else 408 { 409 if (*ap != '/' && !isalnum(*ap)) 410 fputc('\\', fp); 411 412 fputc(*ap, fp); 413 } 414 } 415 /* Test cd's exit status: die if the original directory has been 416 * removed, become unreadable or whatever 417 */ 418 fprintf(fp, " || {\n\t echo 'Execution directory " 419 "inaccessible' >&2\n\t exit 1\n}\n"); 420 421 while((ch = getchar()) != EOF) 422 fputc(ch, fp); 423 424 fprintf(fp, "\n"); 425 if (ferror(fp)) 426 panic("output error"); 427 428 if (ferror(stdin)) 429 panic("input error"); 430 431 fclose(fp); 432 433 /* Set the x bit so that we're ready to start executing 434 */ 435 436 if (fchmod(fd2, S_IRUSR | S_IWUSR | S_IXUSR) < 0) 437 perr("cannot give away file"); 438 439 close(fd2); 440 441 /* Print output. */ 442 char *timestr = timer2str(runtimer); 443 444 fprintf(stderr, "Job %ld will be executed using /bin/sh\n", jobno); 445 fprintf(stderr, "Job %ld at %s\n", jobno, timestr); 446 free(timestr); 447 } 448 449 static int 450 in_job_list(long job, long *joblist, int len) 451 { 452 int i; 453 454 for (i = 0; i < len; i++) 455 if (job == joblist[i]) 456 return 1; 457 458 return 0; 459 } 460 461 static void 462 list_jobs(long *joblist, int len) 463 { 464 /* List all a user's jobs in the queue, by looping through ATJOB_DIR, 465 * or everybody's if we are root 466 */ 467 struct passwd *pw; 468 DIR *spool; 469 struct dirent *dirent; 470 struct stat buf; 471 unsigned long ctm; 472 char queue; 473 long jobno; 474 time_t runtimer; 475 char *timestr; 476 int first=1; 477 478 setlocale(LC_TIME, ""); 479 480 PRIV_START 481 482 if (chdir(ATJOB_DIR) != 0) 483 perr("cannot change to " ATJOB_DIR); 484 485 if ((spool = opendir(".")) == NULL) 486 perr("cannot open " ATJOB_DIR); 487 488 /* Loop over every file in the directory 489 */ 490 while((dirent = readdir(spool)) != NULL) { 491 if (stat(dirent->d_name, &buf) != 0) 492 perr("cannot stat in " ATJOB_DIR); 493 494 /* See it's a regular file and has its x bit turned on and 495 * is the user's 496 */ 497 if (!S_ISREG(buf.st_mode) 498 || ((buf.st_uid != real_uid) && ! (real_uid == 0)) 499 || !(S_IXUSR & buf.st_mode || atverify)) 500 continue; 501 502 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 503 continue; 504 505 /* If jobs are given, only list those jobs */ 506 if (joblist && !in_job_list(jobno, joblist, len)) 507 continue; 508 509 if (atqueue && (queue != atqueue)) 510 continue; 511 512 /* Get datetime */ 513 runtimer = 60*(time_t) ctm; 514 timestr = timer2str(runtimer); 515 516 /* Look up owner's uid in password database file */ 517 pw = getpwuid(buf.st_uid); 518 519 if (first) { 520 printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n"); 521 first=0; 522 } 523 printf("%s\t%-16s%c%s\t%ld\n", 524 timestr, 525 pw ? pw->pw_name : "???", 526 queue, 527 (S_IXUSR & buf.st_mode) ? "":"(done)", 528 jobno); 529 free(timestr); 530 } 531 closedir(spool); 532 533 PRIV_END 534 } 535 536 static void 537 process_jobs(int argc, char **argv, int what) 538 { 539 /* Delete every argument (job - ID) given 540 */ 541 int i; 542 struct stat buf; 543 DIR *spool; 544 struct dirent *dirent; 545 unsigned long ctm; 546 char queue; 547 long jobno; 548 549 PRIV_START 550 551 if (chdir(ATJOB_DIR) != 0) 552 perr("cannot change to " ATJOB_DIR); 553 554 if ((spool = opendir(".")) == NULL) 555 perr("cannot open " ATJOB_DIR); 556 557 PRIV_END 558 559 /* Loop over every file in the directory 560 */ 561 while((dirent = readdir(spool)) != NULL) { 562 563 PRIV_START 564 if (stat(dirent->d_name, &buf) != 0) 565 perr("cannot stat in " ATJOB_DIR); 566 PRIV_END 567 568 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 569 continue; 570 571 for (i=optind; i < argc; i++) { 572 if (atoi(argv[i]) == jobno) { 573 if ((buf.st_uid != real_uid) && !(real_uid == 0)) 574 errx(EXIT_FAILURE, "%s: not owner", argv[i]); 575 switch (what) { 576 case ATRM: 577 578 PRIV_START 579 580 if (unlink(dirent->d_name) != 0) 581 perr(dirent->d_name); 582 583 PRIV_END 584 585 break; 586 587 case CAT: 588 { 589 FILE *fp; 590 int ch; 591 592 PRIV_START 593 594 fp = fopen(dirent->d_name,"r"); 595 596 PRIV_END 597 598 if (!fp) { 599 perr("cannot open file"); 600 } 601 while((ch = getc(fp)) != EOF) { 602 putchar(ch); 603 } 604 fclose(fp); 605 } 606 break; 607 608 default: 609 errx(EXIT_FAILURE, "internal error, process_jobs = %d", 610 what); 611 } 612 } 613 } 614 } 615 closedir(spool); 616 } /* delete_jobs */ 617 618 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; 619 620 static time_t 621 ttime(const char *arg) 622 { 623 /* 624 * This is pretty much a copy of stime_arg1() from touch.c. I changed 625 * the return value and the argument list because it's more convenient 626 * (IMO) to do everything in one place. - Joe Halpin 627 */ 628 struct timeval tv[2]; 629 time_t now; 630 struct tm *t; 631 int yearset; 632 char *p; 633 634 if (gettimeofday(&tv[0], NULL)) 635 panic("Cannot get current time"); 636 637 /* Start with the current time. */ 638 now = tv[0].tv_sec; 639 if ((t = localtime(&now)) == NULL) 640 panic("localtime"); 641 /* [[CC]YY]MMDDhhmm[.SS] */ 642 if ((p = strchr(arg, '.')) == NULL) 643 t->tm_sec = 0; /* Seconds defaults to 0. */ 644 else { 645 if (strlen(p + 1) != 2) 646 goto terr; 647 *p++ = '\0'; 648 t->tm_sec = ATOI2(p); 649 } 650 651 yearset = 0; 652 switch(strlen(arg)) { 653 case 12: /* CCYYMMDDhhmm */ 654 t->tm_year = ATOI2(arg); 655 t->tm_year *= 100; 656 yearset = 1; 657 /* FALLTHROUGH */ 658 case 10: /* YYMMDDhhmm */ 659 if (yearset) { 660 yearset = ATOI2(arg); 661 t->tm_year += yearset; 662 } else { 663 yearset = ATOI2(arg); 664 t->tm_year = yearset + 2000; 665 } 666 t->tm_year -= 1900; /* Convert to UNIX time. */ 667 /* FALLTHROUGH */ 668 case 8: /* MMDDhhmm */ 669 t->tm_mon = ATOI2(arg); 670 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 671 t->tm_mday = ATOI2(arg); 672 t->tm_hour = ATOI2(arg); 673 t->tm_min = ATOI2(arg); 674 break; 675 default: 676 goto terr; 677 } 678 679 t->tm_isdst = -1; /* Figure out DST. */ 680 tv[0].tv_sec = tv[1].tv_sec = mktime(t); 681 if (tv[0].tv_sec != -1) 682 return tv[0].tv_sec; 683 else 684 terr: 685 panic( 686 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 687 } 688 689 /* The caller must free up the memory. */ 690 static char * 691 timer2str(time_t runtimer) 692 { 693 struct tm runtime; 694 char *timestr; 695 size_t rv; 696 697 timestr = malloc(TIMESIZE); 698 if (timestr == NULL) 699 panic("out of memory"); 700 701 runtime = *localtime(&runtimer); 702 rv = strftime(timestr, TIMESIZE, nl_langinfo(D_T_FMT), &runtime); 703 if (rv == 0) 704 panic("TIMESIZE too low"); 705 706 return (timestr); 707 } 708 709 static long * 710 get_job_list(int argc, char *argv[], int *joblen) 711 { 712 int i, len; 713 long *joblist; 714 char *ep; 715 716 joblist = NULL; 717 len = argc; 718 if (len > 0) { 719 if ((joblist = malloc(len * sizeof(*joblist))) == NULL) 720 panic("out of memory"); 721 722 for (i = 0; i < argc; i++) { 723 errno = 0; 724 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 || 725 ep == argv[i] || *ep != '\0' || errno) 726 panic("invalid job number"); 727 } 728 } 729 730 *joblen = len; 731 return joblist; 732 } 733 734 int 735 main(int argc, char **argv) 736 { 737 int c; 738 char queue = DEFAULT_AT_QUEUE; 739 char queue_set = 0; 740 char *pgm; 741 742 int program = AT; /* our default program */ 743 const char *options = "q:f:t:rmvldbc"; /* default options for at */ 744 time_t timer; 745 long *joblist; 746 int joblen; 747 748 joblist = NULL; 749 joblen = 0; 750 timer = -1; 751 RELINQUISH_PRIVS 752 753 /* Eat any leading paths 754 */ 755 if ((pgm = strrchr(argv[0], '/')) == NULL) 756 pgm = argv[0]; 757 else 758 pgm++; 759 760 namep = pgm; 761 762 /* find out what this program is supposed to do 763 */ 764 if (strcmp(pgm, "atq") == 0) { 765 program = ATQ; 766 options = "q:v"; 767 } 768 else if (strcmp(pgm, "atrm") == 0) { 769 program = ATRM; 770 options = ""; 771 } 772 else if (strcmp(pgm, "batch") == 0) { 773 program = BATCH; 774 options = "f:q:mv"; 775 } 776 777 /* process whatever options we can process 778 */ 779 opterr=1; 780 while ((c=getopt(argc, argv, options)) != -1) 781 switch (c) { 782 case 'v': /* verify time settings */ 783 atverify = 1; 784 break; 785 786 case 'm': /* send mail when job is complete */ 787 send_mail = 1; 788 break; 789 790 case 'f': 791 atinput = optarg; 792 break; 793 794 case 'q': /* specify queue */ 795 if (strlen(optarg) > 1) 796 usage(); 797 798 atqueue = queue = *optarg; 799 if (!(islower(queue)||isupper(queue))) 800 usage(); 801 802 queue_set = 1; 803 break; 804 805 case 'd': 806 warnx("-d is deprecated; use -r instead"); 807 /* fall through to 'r' */ 808 809 case 'r': 810 if (program != AT) 811 usage(); 812 813 program = ATRM; 814 options = ""; 815 break; 816 817 case 't': 818 if (program != AT) 819 usage(); 820 timer = ttime(optarg); 821 break; 822 823 case 'l': 824 if (program != AT) 825 usage(); 826 827 program = ATQ; 828 options = "q:"; 829 break; 830 831 case 'b': 832 if (program != AT) 833 usage(); 834 835 program = BATCH; 836 options = "f:q:mv"; 837 break; 838 839 case 'c': 840 program = CAT; 841 options = ""; 842 break; 843 844 default: 845 usage(); 846 break; 847 } 848 /* end of options eating 849 */ 850 851 /* select our program 852 */ 853 if(!check_permission()) 854 errx(EXIT_FAILURE, "you do not have permission to use this program"); 855 switch (program) { 856 case ATQ: 857 858 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 859 860 if (queue_set == 0) 861 joblist = get_job_list(argc - optind, argv + optind, &joblen); 862 list_jobs(joblist, joblen); 863 break; 864 865 case ATRM: 866 867 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 868 869 process_jobs(argc, argv, ATRM); 870 break; 871 872 case CAT: 873 874 process_jobs(argc, argv, CAT); 875 break; 876 877 case AT: 878 /* 879 * If timer is > -1, then the user gave the time with -t. In that 880 * case, it's already been set. If not, set it now. 881 */ 882 if (timer == -1) 883 timer = parsetime(argc, argv); 884 885 if (atverify) 886 { 887 struct tm *tm = localtime(&timer); 888 fprintf(stderr, "%s\n", asctime(tm)); 889 } 890 writefile(timer, queue); 891 break; 892 893 case BATCH: 894 if (queue_set) 895 queue = toupper(queue); 896 else 897 queue = DEFAULT_BATCH_QUEUE; 898 899 if (argc > optind) 900 timer = parsetime(argc, argv); 901 else 902 timer = time(NULL); 903 904 if (atverify) 905 { 906 struct tm *tm = localtime(&timer); 907 fprintf(stderr, "%s\n", asctime(tm)); 908 } 909 910 writefile(timer, queue); 911 break; 912 913 default: 914 panic("internal error"); 915 break; 916 } 917 exit(EXIT_SUCCESS); 918 } 919