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 1.29 2002/07/22 11:32:16 robert Exp $ 29 * $DragonFly: src/usr.bin/at/at.c,v 1.8 2007/08/26 16:52:01 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 int in_job_list(long, long *, int); 118 static long *get_job_list(int, char *[], int *); 119 120 /* Signal catching functions */ 121 122 static void 123 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 } 136 137 static void 138 alarmc(int signo __unused) 139 { 140 char buf[1024]; 141 142 /* Time out after some seconds. */ 143 strlcpy(buf, namep, sizeof(buf)); 144 strlcat(buf, ": file locking timed out\n", sizeof(buf)); 145 write(STDERR_FILENO, buf, strlen(buf)); 146 sigc(0); 147 } 148 149 /* Local functions */ 150 151 static char * 152 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 183 nextjob(void) 184 { 185 long jobno; 186 FILE *fid; 187 188 if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != (FILE*)0) { 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")) != (FILE*)0) { 200 fprintf(fid, "%05lx\n", jobno = 1); 201 fclose(fid); 202 return 1; 203 } 204 return EOF; 205 } 206 207 static void 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 setlocale(LC_TIME, ""); 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 /* Loop over all possible file names for running something at this 236 * particular time, see if a file is there; the first empty slot at any 237 * particular time is used. Lock the file LFILE first to make sure 238 * we're alone when doing this. 239 */ 240 241 PRIV_START 242 243 if ((lockdes = open(LFILE, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR)) < 0) 244 perr("cannot open lockfile " LFILE); 245 246 lock.l_type = F_WRLCK; lock.l_whence = SEEK_SET; lock.l_start = 0; 247 lock.l_len = 0; 248 249 act.sa_handler = alarmc; 250 sigemptyset(&(act.sa_mask)); 251 act.sa_flags = 0; 252 253 /* Set an alarm so a timeout occurs after ALARMC seconds, in case 254 * something is seriously broken. 255 */ 256 sigaction(SIGALRM, &act, NULL); 257 alarm(ALARMC); 258 fcntl(lockdes, F_SETLKW, &lock); 259 alarm(0); 260 261 if ((jobno = nextjob()) == EOF) 262 perr("cannot generate job number"); 263 264 ppos = atfile + strlen(atfile); 265 snprintf(ppos, sizeof(atfile) - strlen(atfile), "%c%5lx%8lx", queue, 266 jobno, (unsigned long) (runtimer/60)); 267 268 for(ap=ppos; *ap != '\0'; ap ++) 269 if (*ap == ' ') 270 *ap = '0'; 271 272 if (stat(atfile, &statbuf) != 0) 273 if (errno != ENOENT) 274 perr("cannot access " ATJOB_DIR); 275 276 /* Create the file. The x bit is only going to be set after it has 277 * been completely written out, to make sure it is not executed in the 278 * meantime. To make sure they do not get deleted, turn off their r 279 * bit. Yes, this is a kluge. 280 */ 281 cmask = umask(S_IRUSR | S_IWUSR | S_IXUSR); 282 if ((fdes = creat(atfile, O_WRONLY)) == -1) 283 perr("cannot create atjob file"); 284 285 if ((fd2 = dup(fdes)) <0) 286 perr("error in dup() of job file"); 287 288 if(fchown(fd2, real_uid, real_gid) != 0) 289 perr("cannot give away file"); 290 291 PRIV_END 292 293 /* We no longer need suid root; now we just need to be able to write 294 * to the directory, if necessary. 295 */ 296 297 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 298 299 /* We've successfully created the file; let's set the flag so it 300 * gets removed in case of an interrupt or error. 301 */ 302 fcreated = 1; 303 304 /* Now we can release the lock, so other people can access it 305 */ 306 lock.l_type = F_UNLCK; lock.l_whence = SEEK_SET; lock.l_start = 0; 307 lock.l_len = 0; 308 fcntl(lockdes, F_SETLKW, &lock); 309 close(lockdes); 310 311 if((fp = fdopen(fdes, "w")) == NULL) 312 panic("cannot reopen atjob file"); 313 314 /* Get the userid to mail to, first by trying getlogin(), 315 * then from LOGNAME, finally from getpwuid(). 316 */ 317 mailname = getlogin(); 318 if (mailname == NULL) 319 mailname = getenv("LOGNAME"); 320 321 if ((mailname == NULL) || (mailname[0] == '\0') 322 || (strlen(mailname) >= MAXLOGNAME) || (getpwnam(mailname)==NULL)) 323 { 324 pass_entry = getpwuid(real_uid); 325 if (pass_entry != NULL) 326 mailname = pass_entry->pw_name; 327 } 328 329 if (atinput != (char *) NULL) 330 { 331 fpin = freopen(atinput, "r", stdin); 332 if (fpin == NULL) 333 perr("cannot open input file"); 334 } 335 fprintf(fp, "#!/bin/sh\n# atrun uid=%ld gid=%ld\n# mail %*s %d\n", 336 (long) real_uid, (long) real_gid, MAXLOGNAME - 1, mailname, 337 send_mail); 338 339 /* Write out the umask at the time of invocation 340 */ 341 fprintf(fp, "umask %lo\n", (unsigned long) cmask); 342 343 /* Write out the environment. Anything that may look like a 344 * special character to the shell is quoted, except for \n, which is 345 * done with a pair of "'s. Don't export the no_export list (such 346 * as TERM or DISPLAY) because we don't want these. 347 */ 348 for (atenv= environ; *atenv != NULL; atenv++) 349 { 350 int export = 1; 351 char *eqp; 352 353 eqp = strchr(*atenv, '='); 354 if (ap == NULL) 355 eqp = *atenv; 356 else 357 { 358 size_t i; 359 for (i=0; i<sizeof(no_export)/sizeof(no_export[0]); i++) 360 { 361 export = export 362 && (strncmp(*atenv, no_export[i], 363 (size_t) (eqp-*atenv)) != 0); 364 } 365 eqp++; 366 } 367 368 if (export) 369 { 370 fwrite(*atenv, sizeof(char), eqp-*atenv, fp); 371 for(ap = eqp;*ap != '\0'; ap++) 372 { 373 if (*ap == '\n') 374 fprintf(fp, "\"\n\""); 375 else 376 { 377 if (!isalnum(*ap)) { 378 switch (*ap) { 379 case '%': case '/': case '{': case '[': 380 case ']': case '=': case '}': case '@': 381 case '+': case '#': case ',': case '.': 382 case ':': case '-': case '_': 383 break; 384 default: 385 fputc('\\', fp); 386 break; 387 } 388 } 389 fputc(*ap, fp); 390 } 391 } 392 fputs("; export ", fp); 393 fwrite(*atenv, sizeof(char), eqp-*atenv -1, fp); 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 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 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 setlocale(LC_TIME, ""); 473 474 PRIV_START 475 476 if (chdir(ATJOB_DIR) != 0) 477 perr("cannot change to " ATJOB_DIR); 478 479 if ((spool = opendir(".")) == NULL) 480 perr("cannot open " ATJOB_DIR); 481 482 /* Loop over every file in the directory 483 */ 484 while((dirent = readdir(spool)) != NULL) { 485 if (stat(dirent->d_name, &buf) != 0) 486 perr("cannot stat in " ATJOB_DIR); 487 488 /* See it's a regular file and has its x bit turned on and 489 * is the user's 490 */ 491 if (!S_ISREG(buf.st_mode) 492 || ((buf.st_uid != real_uid) && ! (real_uid == 0)) 493 || !(S_IXUSR & buf.st_mode || atverify)) 494 continue; 495 496 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 497 continue; 498 499 /* If jobs are given, only list those jobs */ 500 if (joblist && !in_job_list(jobno, joblist, len)) 501 continue; 502 503 if (atqueue && (queue != atqueue)) 504 continue; 505 506 runtimer = 60*(time_t) ctm; 507 runtime = *localtime(&runtimer); 508 strftime(timestr, TIMESIZE, nl_langinfo(D_T_FMT), &runtime); 509 if (first) { 510 printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n"); 511 first=0; 512 } 513 pw = getpwuid(buf.st_uid); 514 515 printf("%s\t%-16s%c%s\t%ld\n", 516 timestr, 517 pw ? pw->pw_name : "???", 518 queue, 519 (S_IXUSR & buf.st_mode) ? "":"(done)", 520 jobno); 521 } 522 closedir(spool); 523 524 PRIV_END 525 } 526 527 static void 528 process_jobs(int argc, char **argv, int what) 529 { 530 /* Delete every argument (job - ID) given 531 */ 532 int i; 533 struct stat buf; 534 DIR *spool; 535 struct dirent *dirent; 536 unsigned long ctm; 537 char queue; 538 long jobno; 539 540 PRIV_START 541 542 if (chdir(ATJOB_DIR) != 0) 543 perr("cannot change to " ATJOB_DIR); 544 545 if ((spool = opendir(".")) == NULL) 546 perr("cannot open " ATJOB_DIR); 547 548 PRIV_END 549 550 /* Loop over every file in the directory 551 */ 552 while((dirent = readdir(spool)) != NULL) { 553 554 PRIV_START 555 if (stat(dirent->d_name, &buf) != 0) 556 perr("cannot stat in " ATJOB_DIR); 557 PRIV_END 558 559 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 560 continue; 561 562 for (i=optind; i < argc; i++) { 563 if (atoi(argv[i]) == jobno) { 564 if ((buf.st_uid != real_uid) && !(real_uid == 0)) 565 errx(EXIT_FAILURE, "%s: not owner", argv[i]); 566 switch (what) { 567 case ATRM: 568 569 PRIV_START 570 571 if (unlink(dirent->d_name) != 0) 572 perr(dirent->d_name); 573 574 PRIV_END 575 576 break; 577 578 case CAT: 579 { 580 FILE *fp; 581 int ch; 582 583 PRIV_START 584 585 fp = fopen(dirent->d_name,"r"); 586 587 PRIV_END 588 589 if (!fp) { 590 perr("cannot open file"); 591 } 592 while((ch = getc(fp)) != EOF) { 593 putchar(ch); 594 } 595 fclose(fp); 596 } 597 break; 598 599 default: 600 errx(EXIT_FAILURE, "internal error, process_jobs = %d", 601 what); 602 } 603 } 604 } 605 } 606 closedir(spool); 607 } /* delete_jobs */ 608 609 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; 610 611 static time_t 612 ttime(const char *arg) 613 { 614 /* 615 * This is pretty much a copy of stime_arg1() from touch.c. I changed 616 * the return value and the argument list because it's more convenient 617 * (IMO) to do everything in one place. - Joe Halpin 618 */ 619 struct timeval tv[2]; 620 time_t now; 621 struct tm *t; 622 int yearset; 623 char *p; 624 625 if (gettimeofday(&tv[0], NULL)) 626 panic("Cannot get current time"); 627 628 /* Start with the current time. */ 629 now = tv[0].tv_sec; 630 if ((t = localtime(&now)) == NULL) 631 panic("localtime"); 632 /* [[CC]YY]MMDDhhmm[.SS] */ 633 if ((p = strchr(arg, '.')) == NULL) 634 t->tm_sec = 0; /* Seconds defaults to 0. */ 635 else { 636 if (strlen(p + 1) != 2) 637 goto terr; 638 *p++ = '\0'; 639 t->tm_sec = ATOI2(p); 640 } 641 642 yearset = 0; 643 switch(strlen(arg)) { 644 case 12: /* CCYYMMDDhhmm */ 645 t->tm_year = ATOI2(arg); 646 t->tm_year *= 100; 647 yearset = 1; 648 /* FALLTHROUGH */ 649 case 10: /* YYMMDDhhmm */ 650 if (yearset) { 651 yearset = ATOI2(arg); 652 t->tm_year += yearset; 653 } else { 654 yearset = ATOI2(arg); 655 t->tm_year = yearset + 2000; 656 } 657 t->tm_year -= 1900; /* Convert to UNIX time. */ 658 /* FALLTHROUGH */ 659 case 8: /* MMDDhhmm */ 660 t->tm_mon = ATOI2(arg); 661 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 662 t->tm_mday = ATOI2(arg); 663 t->tm_hour = ATOI2(arg); 664 t->tm_min = ATOI2(arg); 665 break; 666 default: 667 goto terr; 668 } 669 670 t->tm_isdst = -1; /* Figure out DST. */ 671 tv[0].tv_sec = tv[1].tv_sec = mktime(t); 672 if (tv[0].tv_sec != -1) 673 return tv[0].tv_sec; 674 else 675 terr: 676 panic( 677 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 678 } 679 680 static long * 681 get_job_list(int argc, char *argv[], int *joblen) 682 { 683 int i, len; 684 long *joblist; 685 char *ep; 686 687 joblist = NULL; 688 len = argc; 689 if (len > 0) { 690 if ((joblist = malloc(len * sizeof(*joblist))) == NULL) 691 panic("out of memory"); 692 693 for (i = 0; i < argc; i++) { 694 errno = 0; 695 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 || 696 ep == argv[i] || *ep != '\0' || errno) 697 panic("invalid job number"); 698 } 699 } 700 701 *joblen = len; 702 return joblist; 703 } 704 705 int 706 main(int argc, char **argv) 707 { 708 int c; 709 char queue = DEFAULT_AT_QUEUE; 710 char queue_set = 0; 711 char *pgm; 712 713 int program = AT; /* our default program */ 714 const char *options = "q:f:t:rmvldbc"; /* default options for at */ 715 time_t timer; 716 long *joblist; 717 int joblen; 718 719 joblist = NULL; 720 joblen = 0; 721 timer = -1; 722 RELINQUISH_PRIVS 723 724 /* Eat any leading paths 725 */ 726 if ((pgm = strrchr(argv[0], '/')) == NULL) 727 pgm = argv[0]; 728 else 729 pgm++; 730 731 namep = pgm; 732 733 /* find out what this program is supposed to do 734 */ 735 if (strcmp(pgm, "atq") == 0) { 736 program = ATQ; 737 options = "q:v"; 738 } 739 else if (strcmp(pgm, "atrm") == 0) { 740 program = ATRM; 741 options = ""; 742 } 743 else if (strcmp(pgm, "batch") == 0) { 744 program = BATCH; 745 options = "f:q:mv"; 746 } 747 748 /* process whatever options we can process 749 */ 750 opterr=1; 751 while ((c=getopt(argc, argv, options)) != -1) 752 switch (c) { 753 case 'v': /* verify time settings */ 754 atverify = 1; 755 break; 756 757 case 'm': /* send mail when job is complete */ 758 send_mail = 1; 759 break; 760 761 case 'f': 762 atinput = optarg; 763 break; 764 765 case 'q': /* specify queue */ 766 if (strlen(optarg) > 1) 767 usage(); 768 769 atqueue = queue = *optarg; 770 if (!(islower(queue)||isupper(queue))) 771 usage(); 772 773 queue_set = 1; 774 break; 775 776 case 'd': 777 warnx("-d is deprecated; use -r instead"); 778 /* fall through to 'r' */ 779 780 case 'r': 781 if (program != AT) 782 usage(); 783 784 program = ATRM; 785 options = ""; 786 break; 787 788 case 't': 789 if (program != AT) 790 usage(); 791 timer = ttime(optarg); 792 break; 793 794 case 'l': 795 if (program != AT) 796 usage(); 797 798 program = ATQ; 799 options = "q:"; 800 break; 801 802 case 'b': 803 if (program != AT) 804 usage(); 805 806 program = BATCH; 807 options = "f:q:mv"; 808 break; 809 810 case 'c': 811 program = CAT; 812 options = ""; 813 break; 814 815 default: 816 usage(); 817 break; 818 } 819 /* end of options eating 820 */ 821 822 /* select our program 823 */ 824 if(!check_permission()) 825 errx(EXIT_FAILURE, "you do not have permission to use this program"); 826 switch (program) { 827 case ATQ: 828 829 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 830 831 if (queue_set == 0) 832 joblist = get_job_list(argc - optind, argv + optind, &joblen); 833 list_jobs(joblist, joblen); 834 break; 835 836 case ATRM: 837 838 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 839 840 process_jobs(argc, argv, ATRM); 841 break; 842 843 case CAT: 844 845 process_jobs(argc, argv, CAT); 846 break; 847 848 case AT: 849 /* 850 * If timer is > -1, then the user gave the time with -t. In that 851 * case, it's already been set. If not, set it now. 852 */ 853 if (timer == -1) 854 timer = parsetime(argc, argv); 855 856 if (atverify) 857 { 858 struct tm *tm = localtime(&timer); 859 fprintf(stderr, "%s\n", asctime(tm)); 860 } 861 writefile(timer, queue); 862 break; 863 864 case BATCH: 865 if (queue_set) 866 queue = toupper(queue); 867 else 868 queue = DEFAULT_BATCH_QUEUE; 869 870 if (argc > optind) 871 timer = parsetime(argc, argv); 872 else 873 timer = time(NULL); 874 875 if (atverify) 876 { 877 struct tm *tm = localtime(&timer); 878 fprintf(stderr, "%s\n", asctime(tm)); 879 } 880 881 writefile(timer, queue); 882 break; 883 884 default: 885 panic("internal error"); 886 break; 887 } 888 exit(EXIT_SUCCESS); 889 } 890