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 60 /* Local headers */ 61 62 #include "at.h" 63 #include "panic.h" 64 #include "parsetime.h" 65 #include "perm.h" 66 67 #define MAIN 68 #include "privs.h" 69 70 /* Macros */ 71 72 #ifndef ATJOB_DIR 73 #define ATJOB_DIR "/usr/spool/atjobs/" 74 #endif 75 76 #ifndef LFILE 77 #define LFILE ATJOB_DIR ".lockfile" 78 #endif 79 80 #ifndef ATJOB_MX 81 #define ATJOB_MX 255 82 #endif 83 84 #define ALARMC 10 /* Number of seconds to wait for timeout */ 85 86 #define SIZE 255 87 #define TIMESIZE 50 88 89 enum { ATQ, ATRM, AT, BATCH, CAT }; /* what program we want to run */ 90 91 /* File scope variables */ 92 93 const char *no_export[] = 94 { 95 "TERM", "TERMCAP", "DISPLAY", "_" 96 } ; 97 static int send_mail = 0; 98 99 /* External variables */ 100 101 extern char **environ; 102 int fcreated; 103 char atfile[] = ATJOB_DIR "12345678901234"; 104 105 char *atinput = (char*)0; /* where to get input from */ 106 char atqueue = 0; /* which queue to examine for jobs (atq) */ 107 char atverify = 0; /* verify time instead of queuing job */ 108 char *namep; 109 110 /* Function declarations */ 111 112 static void sigc(int signo); 113 static void alarmc(int signo); 114 static char *cwdname(void); 115 static void writefile(time_t runtimer, char queue); 116 static void list_jobs(long *, int); 117 static long nextjob(void); 118 static time_t ttime(const char *arg); 119 static int in_job_list(long, long *, int); 120 static long *get_job_list(int, char *[], int *); 121 122 /* Signal catching functions */ 123 124 static void 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 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 *cwdname(void) 152 { 153 /* Read in the current directory; the name will be overwritten on 154 * subsequent calls. 155 */ 156 static char *ptr = NULL; 157 static size_t size = SIZE; 158 159 if (ptr == NULL) 160 if ((ptr = malloc(size)) == NULL) 161 errx(EXIT_FAILURE, "virtual memory exhausted"); 162 163 while (1) 164 { 165 if (ptr == NULL) 166 panic("out of memory"); 167 168 if (getcwd(ptr, size-1) != NULL) 169 return ptr; 170 171 if (errno != ERANGE) 172 perr("cannot get directory"); 173 174 free (ptr); 175 size += SIZE; 176 if ((ptr = malloc(size)) == NULL) 177 errx(EXIT_FAILURE, "virtual memory exhausted"); 178 } 179 } 180 181 static long 182 nextjob(void) 183 { 184 long jobno; 185 FILE *fid; 186 187 if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != NULL) { 188 if (fscanf(fid, "%5lx", &jobno) == 1) { 189 rewind(fid); 190 jobno = (1+jobno) % 0xfffff; /* 2^20 jobs enough? */ 191 fprintf(fid, "%05lx\n", jobno); 192 } 193 else 194 jobno = EOF; 195 fclose(fid); 196 return jobno; 197 } 198 else if ((fid = fopen(ATJOB_DIR ".SEQ", "w")) != NULL) { 199 fprintf(fid, "%05lx\n", jobno = 1); 200 fclose(fid); 201 return 1; 202 } 203 return EOF; 204 } 205 206 static void 207 writefile(time_t runtimer, char queue) 208 { 209 /* This does most of the work if at or batch are invoked for writing a job. 210 */ 211 long jobno; 212 char *ap, *ppos, *mailname; 213 struct passwd *pass_entry; 214 struct stat statbuf; 215 int fdes, lockdes, fd2; 216 FILE *fp, *fpin; 217 struct sigaction act; 218 char **atenv; 219 int ch; 220 mode_t cmask; 221 struct flock lock; 222 223 #ifdef __FreeBSD__ 224 (void) setlocale(LC_TIME, ""); 225 #endif 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 ppos = atfile + strlen(ATJOB_DIR); 237 238 /* Loop over all possible file names for running something at this 239 * particular time, see if a file is there; the first empty slot at any 240 * particular time is used. Lock the file LFILE first to make sure 241 * we're alone when doing this. 242 */ 243 244 PRIV_START 245 246 if ((lockdes = open(LFILE, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR)) < 0) 247 perr("cannot open lockfile " LFILE); 248 249 lock.l_type = F_WRLCK; lock.l_whence = SEEK_SET; lock.l_start = 0; 250 lock.l_len = 0; 251 252 act.sa_handler = alarmc; 253 sigemptyset(&(act.sa_mask)); 254 act.sa_flags = 0; 255 256 /* Set an alarm so a timeout occurs after ALARMC seconds, in case 257 * something is seriously broken. 258 */ 259 sigaction(SIGALRM, &act, NULL); 260 alarm(ALARMC); 261 fcntl(lockdes, F_SETLKW, &lock); 262 alarm(0); 263 264 if ((jobno = nextjob()) == EOF) 265 perr("cannot generate job number"); 266 267 sprintf(ppos, "%c%5lx%8lx", queue, 268 jobno, (unsigned long) (runtimer/60)); 269 270 for(ap=ppos; *ap != '\0'; ap ++) 271 if (*ap == ' ') 272 *ap = '0'; 273 274 if (stat(atfile, &statbuf) != 0) 275 if (errno != ENOENT) 276 perr("cannot access " ATJOB_DIR); 277 278 /* Create the file. The x bit is only going to be set after it has 279 * been completely written out, to make sure it is not executed in the 280 * meantime. To make sure they do not get deleted, turn off their r 281 * bit. Yes, this is a kluge. 282 */ 283 cmask = umask(S_IRUSR | S_IWUSR | S_IXUSR); 284 if ((fdes = creat(atfile, O_WRONLY)) == -1) 285 perr("cannot create atjob file"); 286 287 if ((fd2 = dup(fdes)) <0) 288 perr("error in dup() of job file"); 289 290 if(fchown(fd2, real_uid, real_gid) != 0) 291 perr("cannot give away file"); 292 293 PRIV_END 294 295 /* We no longer need suid root; now we just need to be able to write 296 * to the directory, if necessary. 297 */ 298 299 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 300 301 /* We've successfully created the file; let's set the flag so it 302 * gets removed in case of an interrupt or error. 303 */ 304 fcreated = 1; 305 306 /* Now we can release the lock, so other people can access it 307 */ 308 lock.l_type = F_UNLCK; lock.l_whence = SEEK_SET; lock.l_start = 0; 309 lock.l_len = 0; 310 fcntl(lockdes, F_SETLKW, &lock); 311 close(lockdes); 312 313 if((fp = fdopen(fdes, "w")) == NULL) 314 panic("cannot reopen atjob file"); 315 316 /* Get the userid to mail to, first by trying getlogin(), 317 * then from LOGNAME, finally from getpwuid(). 318 */ 319 mailname = getlogin(); 320 if (mailname == NULL) 321 mailname = getenv("LOGNAME"); 322 323 if ((mailname == NULL) || (mailname[0] == '\0') 324 || (strlen(mailname) >= MAXLOGNAME) || (getpwnam(mailname)==NULL)) 325 { 326 pass_entry = getpwuid(real_uid); 327 if (pass_entry != NULL) 328 mailname = pass_entry->pw_name; 329 } 330 331 if (atinput != (char *) NULL) 332 { 333 fpin = freopen(atinput, "r", stdin); 334 if (fpin == NULL) 335 perr("cannot open input file"); 336 } 337 fprintf(fp, "#!/bin/sh\n# atrun uid=%ld gid=%ld\n# mail %*s %d\n", 338 (long) real_uid, (long) real_gid, MAXLOGNAME - 1, mailname, 339 send_mail); 340 341 /* Write out the umask at the time of invocation 342 */ 343 fprintf(fp, "umask %lo\n", (unsigned long) cmask); 344 345 /* Write out the environment. Anything that may look like a 346 * special character to the shell is quoted, except for \n, which is 347 * done with a pair of "'s. Don't export the no_export list (such 348 * as TERM or DISPLAY) because we don't want these. 349 */ 350 for (atenv= environ; *atenv != NULL; atenv++) 351 { 352 int export = 1; 353 char *eqp; 354 355 eqp = strchr(*atenv, '='); 356 if (ap == NULL) 357 eqp = *atenv; 358 else 359 { 360 size_t i; 361 for (i=0; i<sizeof(no_export)/sizeof(no_export[0]); i++) 362 { 363 export = export 364 && (strncmp(*atenv, no_export[i], 365 (size_t) (eqp-*atenv)) != 0); 366 } 367 eqp++; 368 } 369 370 if (export) 371 { 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 fputs("; export ", fp); 395 fwrite(*atenv, sizeof(char), eqp-*atenv -1, fp); 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 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 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 531 process_jobs(int argc, char **argv, int what) 532 { 533 /* Delete every argument (job - ID) given 534 */ 535 int i; 536 struct stat buf; 537 DIR *spool; 538 struct dirent *dirent; 539 unsigned long ctm; 540 char queue; 541 long jobno; 542 543 PRIV_START 544 545 if (chdir(ATJOB_DIR) != 0) 546 perr("cannot change to " ATJOB_DIR); 547 548 if ((spool = opendir(".")) == NULL) 549 perr("cannot open " ATJOB_DIR); 550 551 PRIV_END 552 553 /* Loop over every file in the directory 554 */ 555 while((dirent = readdir(spool)) != NULL) { 556 557 PRIV_START 558 if (stat(dirent->d_name, &buf) != 0) 559 perr("cannot stat in " ATJOB_DIR); 560 PRIV_END 561 562 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 563 continue; 564 565 for (i=optind; i < argc; i++) { 566 if (atoi(argv[i]) == jobno) { 567 if ((buf.st_uid != real_uid) && !(real_uid == 0)) 568 errx(EXIT_FAILURE, "%s: not owner", argv[i]); 569 switch (what) { 570 case ATRM: 571 572 PRIV_START 573 574 if (unlink(dirent->d_name) != 0) 575 perr(dirent->d_name); 576 577 PRIV_END 578 579 break; 580 581 case CAT: 582 { 583 FILE *fp; 584 int ch; 585 586 PRIV_START 587 588 fp = fopen(dirent->d_name,"r"); 589 590 PRIV_END 591 592 if (!fp) { 593 perr("cannot open file"); 594 } 595 while((ch = getc(fp)) != EOF) { 596 putchar(ch); 597 } 598 fclose(fp); 599 } 600 break; 601 602 default: 603 errx(EXIT_FAILURE, "internal error, process_jobs = %d", 604 what); 605 } 606 } 607 } 608 } 609 closedir(spool); 610 } /* delete_jobs */ 611 612 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; 613 614 static time_t 615 ttime(const char *arg) 616 { 617 /* 618 * This is pretty much a copy of stime_arg1() from touch.c. I changed 619 * the return value and the argument list because it's more convenient 620 * (IMO) to do everything in one place. - Joe Halpin 621 */ 622 struct timeval tv[2]; 623 time_t now; 624 struct tm *t; 625 int yearset; 626 char *p; 627 628 if (gettimeofday(&tv[0], NULL)) 629 panic("Cannot get current time"); 630 631 /* Start with the current time. */ 632 now = tv[0].tv_sec; 633 if ((t = localtime(&now)) == NULL) 634 panic("localtime"); 635 /* [[CC]YY]MMDDhhmm[.SS] */ 636 if ((p = strchr(arg, '.')) == NULL) 637 t->tm_sec = 0; /* Seconds defaults to 0. */ 638 else { 639 if (strlen(p + 1) != 2) 640 goto terr; 641 *p++ = '\0'; 642 t->tm_sec = ATOI2(p); 643 } 644 645 yearset = 0; 646 switch(strlen(arg)) { 647 case 12: /* CCYYMMDDhhmm */ 648 t->tm_year = ATOI2(arg); 649 t->tm_year *= 100; 650 yearset = 1; 651 /* FALLTHROUGH */ 652 case 10: /* YYMMDDhhmm */ 653 if (yearset) { 654 yearset = ATOI2(arg); 655 t->tm_year += yearset; 656 } else { 657 yearset = ATOI2(arg); 658 t->tm_year = yearset + 2000; 659 } 660 t->tm_year -= 1900; /* Convert to UNIX time. */ 661 /* FALLTHROUGH */ 662 case 8: /* MMDDhhmm */ 663 t->tm_mon = ATOI2(arg); 664 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 665 t->tm_mday = ATOI2(arg); 666 t->tm_hour = ATOI2(arg); 667 t->tm_min = ATOI2(arg); 668 break; 669 default: 670 goto terr; 671 } 672 673 t->tm_isdst = -1; /* Figure out DST. */ 674 tv[0].tv_sec = tv[1].tv_sec = mktime(t); 675 if (tv[0].tv_sec != -1) 676 return tv[0].tv_sec; 677 else 678 terr: 679 panic( 680 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 681 } 682 683 static long * 684 get_job_list(int argc, char *argv[], int *joblen) 685 { 686 int i, len; 687 long *joblist; 688 char *ep; 689 690 joblist = NULL; 691 len = argc; 692 if (len > 0) { 693 if ((joblist = malloc(len * sizeof(*joblist))) == NULL) 694 panic("out of memory"); 695 696 for (i = 0; i < argc; i++) { 697 errno = 0; 698 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 || 699 ep == argv[i] || *ep != '\0' || errno) 700 panic("invalid job number"); 701 } 702 } 703 704 *joblen = len; 705 return joblist; 706 } 707 708 int 709 main(int argc, char **argv) 710 { 711 int c; 712 char queue = DEFAULT_AT_QUEUE; 713 char queue_set = 0; 714 char *pgm; 715 716 int program = AT; /* our default program */ 717 const char *options = "q:f:t:rmvldbc"; /* default options for at */ 718 time_t timer; 719 long *joblist; 720 int joblen; 721 722 joblist = NULL; 723 joblen = 0; 724 timer = -1; 725 RELINQUISH_PRIVS 726 727 /* Eat any leading paths 728 */ 729 if ((pgm = strrchr(argv[0], '/')) == NULL) 730 pgm = argv[0]; 731 else 732 pgm++; 733 734 namep = pgm; 735 736 /* find out what this program is supposed to do 737 */ 738 if (strcmp(pgm, "atq") == 0) { 739 program = ATQ; 740 options = "q:v"; 741 } 742 else if (strcmp(pgm, "atrm") == 0) { 743 program = ATRM; 744 options = ""; 745 } 746 else if (strcmp(pgm, "batch") == 0) { 747 program = BATCH; 748 options = "f:q:mv"; 749 } 750 751 /* process whatever options we can process 752 */ 753 opterr=1; 754 while ((c=getopt(argc, argv, options)) != -1) 755 switch (c) { 756 case 'v': /* verify time settings */ 757 atverify = 1; 758 break; 759 760 case 'm': /* send mail when job is complete */ 761 send_mail = 1; 762 break; 763 764 case 'f': 765 atinput = optarg; 766 break; 767 768 case 'q': /* specify queue */ 769 if (strlen(optarg) > 1) 770 usage(); 771 772 atqueue = queue = *optarg; 773 if (!(islower(queue)||isupper(queue))) 774 usage(); 775 776 queue_set = 1; 777 break; 778 779 case 'd': 780 warnx("-d is deprecated; use -r instead"); 781 /* fall through to 'r' */ 782 783 case 'r': 784 if (program != AT) 785 usage(); 786 787 program = ATRM; 788 options = ""; 789 break; 790 791 case 't': 792 if (program != AT) 793 usage(); 794 timer = ttime(optarg); 795 break; 796 797 case 'l': 798 if (program != AT) 799 usage(); 800 801 program = ATQ; 802 options = "q:"; 803 break; 804 805 case 'b': 806 if (program != AT) 807 usage(); 808 809 program = BATCH; 810 options = "f:q:mv"; 811 break; 812 813 case 'c': 814 program = CAT; 815 options = ""; 816 break; 817 818 default: 819 usage(); 820 break; 821 } 822 /* end of options eating 823 */ 824 825 /* select our program 826 */ 827 if(!check_permission()) 828 errx(EXIT_FAILURE, "you do not have permission to use this program"); 829 switch (program) { 830 case ATQ: 831 832 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 833 834 if (queue_set == 0) 835 joblist = get_job_list(argc - optind, argv + optind, &joblen); 836 list_jobs(joblist, joblen); 837 break; 838 839 case ATRM: 840 841 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 842 843 process_jobs(argc, argv, ATRM); 844 break; 845 846 case CAT: 847 848 process_jobs(argc, argv, CAT); 849 break; 850 851 case AT: 852 /* 853 * If timer is > -1, then the user gave the time with -t. In that 854 * case, it's already been set. If not, set it now. 855 */ 856 if (timer == -1) 857 timer = parsetime(argc, argv); 858 859 if (atverify) 860 { 861 struct tm *tm = localtime(&timer); 862 fprintf(stderr, "%s\n", asctime(tm)); 863 } 864 writefile(timer, queue); 865 break; 866 867 case BATCH: 868 if (queue_set) 869 queue = toupper(queue); 870 else 871 queue = DEFAULT_BATCH_QUEUE; 872 873 if (argc > optind) 874 timer = parsetime(argc, argv); 875 else 876 timer = time(NULL); 877 878 if (atverify) 879 { 880 struct tm *tm = localtime(&timer); 881 fprintf(stderr, "%s\n", asctime(tm)); 882 } 883 884 writefile(timer, queue); 885 break; 886 887 default: 888 panic("internal error"); 889 break; 890 } 891 exit(EXIT_SUCCESS); 892 } 893