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 static const char *no_export[] = { 94 "TERM", "TERMCAP", "DISPLAY", "_" 95 }; 96 static int send_mail = 0; 97 static char *atinput = NULL; /* where to get input from */ 98 static char atqueue = 0; /* which queue to examine for jobs (atq) */ 99 100 /* External variables */ 101 102 extern char **environ; 103 int fcreated; 104 char atfile[] = ATJOB_DIR "12345678901234"; 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 sigc(int signo __unused) 123 { 124 /* If the user presses ^C, remove the spool file and exit 125 */ 126 if (fcreated) 127 { 128 PRIV_START 129 unlink(atfile); 130 PRIV_END 131 } 132 133 _exit(EXIT_FAILURE); 134 } 135 136 static void alarmc(int signo __unused) 137 { 138 char buf[1024]; 139 140 /* Time out after some seconds. */ 141 strlcpy(buf, namep, sizeof(buf)); 142 strlcat(buf, ": file locking timed out\n", sizeof(buf)); 143 write(STDERR_FILENO, buf, strlen(buf)); 144 sigc(0); 145 } 146 147 /* Local functions */ 148 149 static char *cwdname(void) 150 { 151 /* Read in the current directory; the name will be overwritten on 152 * subsequent calls. 153 */ 154 static char *ptr = NULL; 155 static size_t size = SIZE; 156 157 if (ptr == NULL) 158 if ((ptr = malloc(size)) == NULL) 159 errx(EXIT_FAILURE, "virtual memory exhausted"); 160 161 while (1) 162 { 163 if (ptr == NULL) 164 panic("out of memory"); 165 166 if (getcwd(ptr, size-1) != NULL) 167 return ptr; 168 169 if (errno != ERANGE) 170 perr("cannot get directory"); 171 172 free (ptr); 173 size += SIZE; 174 if ((ptr = malloc(size)) == NULL) 175 errx(EXIT_FAILURE, "virtual memory exhausted"); 176 } 177 } 178 179 static long 180 nextjob(void) 181 { 182 long jobno; 183 FILE *fid; 184 185 if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != NULL) { 186 if (fscanf(fid, "%5lx", &jobno) == 1) { 187 rewind(fid); 188 jobno = (1+jobno) % 0xfffff; /* 2^20 jobs enough? */ 189 fprintf(fid, "%05lx\n", jobno); 190 } 191 else 192 jobno = EOF; 193 fclose(fid); 194 return jobno; 195 } 196 else if ((fid = fopen(ATJOB_DIR ".SEQ", "w")) != NULL) { 197 fprintf(fid, "%05lx\n", jobno = 1); 198 fclose(fid); 199 return 1; 200 } 201 return EOF; 202 } 203 204 static void 205 writefile(time_t runtimer, char queue) 206 { 207 /* This does most of the work if at or batch are invoked for writing a job. 208 */ 209 long jobno; 210 char *ap, *ppos, *mailname; 211 struct passwd *pass_entry; 212 struct stat statbuf; 213 int fdes, lockdes, fd2; 214 FILE *fp, *fpin; 215 struct sigaction act; 216 char **atenv; 217 int ch; 218 mode_t cmask; 219 struct flock lock; 220 221 #ifdef __FreeBSD__ 222 (void) setlocale(LC_TIME, ""); 223 #endif 224 225 /* Install the signal handler for SIGINT; terminate after removing the 226 * spool file if necessary 227 */ 228 act.sa_handler = sigc; 229 sigemptyset(&(act.sa_mask)); 230 act.sa_flags = 0; 231 232 sigaction(SIGINT, &act, NULL); 233 234 ppos = atfile + strlen(ATJOB_DIR); 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 sprintf(ppos, "%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 (void)fputs("export ", fp); 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 fputc('\n', fp); 394 395 } 396 } 397 /* Cd to the directory at the time and write out all the 398 * commands the user supplies from stdin. 399 */ 400 fprintf(fp, "cd "); 401 for (ap = cwdname(); *ap != '\0'; ap++) 402 { 403 if (*ap == '\n') 404 fprintf(fp, "\"\n\""); 405 else 406 { 407 if (*ap != '/' && !isalnum(*ap)) 408 fputc('\\', fp); 409 410 fputc(*ap, fp); 411 } 412 } 413 /* Test cd's exit status: die if the original directory has been 414 * removed, become unreadable or whatever 415 */ 416 fprintf(fp, " || {\n\t echo 'Execution directory " 417 "inaccessible' >&2\n\t exit 1\n}\n"); 418 419 while((ch = getchar()) != EOF) 420 fputc(ch, fp); 421 422 fprintf(fp, "\n"); 423 if (ferror(fp)) 424 panic("output error"); 425 426 if (ferror(stdin)) 427 panic("input error"); 428 429 fclose(fp); 430 431 /* Set the x bit so that we're ready to start executing 432 */ 433 434 if (fchmod(fd2, S_IRUSR | S_IWUSR | S_IXUSR) < 0) 435 perr("cannot give away file"); 436 437 close(fd2); 438 fprintf(stderr, "Job %ld will be executed using /bin/sh\n", jobno); 439 } 440 441 static int 442 in_job_list(long job, long *joblist, int len) 443 { 444 int i; 445 446 for (i = 0; i < len; i++) 447 if (job == joblist[i]) 448 return 1; 449 450 return 0; 451 } 452 453 static void 454 list_jobs(long *joblist, int len) 455 { 456 /* List all a user's jobs in the queue, by looping through ATJOB_DIR, 457 * or everybody's if we are root 458 */ 459 struct passwd *pw; 460 DIR *spool; 461 struct dirent *dirent; 462 struct stat buf; 463 struct tm runtime; 464 unsigned long ctm; 465 char queue; 466 long jobno; 467 time_t runtimer; 468 char timestr[TIMESIZE]; 469 int first=1; 470 471 #ifdef __FreeBSD__ 472 (void) setlocale(LC_TIME, ""); 473 #endif 474 475 PRIV_START 476 477 if (chdir(ATJOB_DIR) != 0) 478 perr("cannot change to " ATJOB_DIR); 479 480 if ((spool = opendir(".")) == NULL) 481 perr("cannot open " ATJOB_DIR); 482 483 /* Loop over every file in the directory 484 */ 485 while((dirent = readdir(spool)) != NULL) { 486 if (stat(dirent->d_name, &buf) != 0) 487 perr("cannot stat in " ATJOB_DIR); 488 489 /* See it's a regular file and has its x bit turned on and 490 * is the user's 491 */ 492 if (!S_ISREG(buf.st_mode) 493 || ((buf.st_uid != real_uid) && ! (real_uid == 0)) 494 || !(S_IXUSR & buf.st_mode || atverify)) 495 continue; 496 497 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 498 continue; 499 500 /* If jobs are given, only list those jobs */ 501 if (joblist && !in_job_list(jobno, joblist, len)) 502 continue; 503 504 if (atqueue && (queue != atqueue)) 505 continue; 506 507 runtimer = 60*(time_t) ctm; 508 runtime = *localtime(&runtimer); 509 strftime(timestr, TIMESIZE, "%+", &runtime); 510 if (first) { 511 printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n"); 512 first=0; 513 } 514 pw = getpwuid(buf.st_uid); 515 516 printf("%s\t%-16s%c%s\t%ld\n", 517 timestr, 518 pw ? pw->pw_name : "???", 519 queue, 520 (S_IXUSR & buf.st_mode) ? "":"(done)", 521 jobno); 522 } 523 PRIV_END 524 closedir(spool); 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 int rc; 534 int nofJobs; 535 int nofDone; 536 int statErrno; 537 struct stat buf; 538 DIR *spool; 539 struct dirent *dirent; 540 unsigned long ctm; 541 char queue; 542 long jobno; 543 544 nofJobs = argc - optind; 545 nofDone = 0; 546 547 PRIV_START 548 549 if (chdir(ATJOB_DIR) != 0) 550 perr("cannot change to " ATJOB_DIR); 551 552 if ((spool = opendir(".")) == NULL) 553 perr("cannot open " ATJOB_DIR); 554 555 PRIV_END 556 557 /* Loop over every file in the directory 558 */ 559 while((dirent = readdir(spool)) != NULL) { 560 561 PRIV_START 562 rc = stat(dirent->d_name, &buf); 563 statErrno = errno; 564 PRIV_END 565 /* There's a race condition between readdir above and stat here: 566 * another atrm process could have removed the file from the spool 567 * directory under our nose. If this happens, stat will set errno to 568 * ENOENT, which we shouldn't treat as fatal. 569 */ 570 if (rc != 0) { 571 if (statErrno == ENOENT) 572 continue; 573 else 574 perr("cannot stat in " ATJOB_DIR); 575 } 576 577 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 578 continue; 579 580 for (i=optind; i < argc; i++) { 581 if (atoi(argv[i]) == jobno) { 582 if ((buf.st_uid != real_uid) && !(real_uid == 0)) 583 errx(EXIT_FAILURE, "%s: not owner", argv[i]); 584 switch (what) { 585 case ATRM: 586 587 PRIV_START 588 589 if (unlink(dirent->d_name) != 0) 590 perr(dirent->d_name); 591 592 PRIV_END 593 594 break; 595 596 case CAT: 597 { 598 FILE *fp; 599 int ch; 600 601 PRIV_START 602 603 fp = fopen(dirent->d_name,"r"); 604 605 PRIV_END 606 607 if (!fp) { 608 perr("cannot open file"); 609 } 610 while((ch = getc(fp)) != EOF) { 611 putchar(ch); 612 } 613 fclose(fp); 614 } 615 break; 616 617 default: 618 errx(EXIT_FAILURE, "internal error, process_jobs = %d", 619 what); 620 } 621 622 /* All arguments have been processed 623 */ 624 if (++nofDone == nofJobs) 625 goto end; 626 } 627 } 628 } 629 end: 630 closedir(spool); 631 } /* delete_jobs */ 632 633 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; 634 635 static time_t 636 ttime(const char *arg) 637 { 638 /* 639 * This is pretty much a copy of stime_arg1() from touch.c. I changed 640 * the return value and the argument list because it's more convenient 641 * (IMO) to do everything in one place. - Joe Halpin 642 */ 643 struct timeval tv[2]; 644 time_t now; 645 struct tm *t; 646 int yearset; 647 char *p; 648 649 if (gettimeofday(&tv[0], NULL)) 650 panic("Cannot get current time"); 651 652 /* Start with the current time. */ 653 now = tv[0].tv_sec; 654 if ((t = localtime(&now)) == NULL) 655 panic("localtime"); 656 /* [[CC]YY]MMDDhhmm[.SS] */ 657 if ((p = strchr(arg, '.')) == NULL) 658 t->tm_sec = 0; /* Seconds defaults to 0. */ 659 else { 660 if (strlen(p + 1) != 2) 661 goto terr; 662 *p++ = '\0'; 663 t->tm_sec = ATOI2(p); 664 } 665 666 yearset = 0; 667 switch(strlen(arg)) { 668 case 12: /* CCYYMMDDhhmm */ 669 t->tm_year = ATOI2(arg); 670 t->tm_year *= 100; 671 yearset = 1; 672 /* FALLTHROUGH */ 673 case 10: /* YYMMDDhhmm */ 674 if (yearset) { 675 yearset = ATOI2(arg); 676 t->tm_year += yearset; 677 } else { 678 yearset = ATOI2(arg); 679 t->tm_year = yearset + 2000; 680 } 681 t->tm_year -= 1900; /* Convert to UNIX time. */ 682 /* FALLTHROUGH */ 683 case 8: /* MMDDhhmm */ 684 t->tm_mon = ATOI2(arg); 685 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 686 t->tm_mday = ATOI2(arg); 687 t->tm_hour = ATOI2(arg); 688 t->tm_min = ATOI2(arg); 689 break; 690 default: 691 goto terr; 692 } 693 694 t->tm_isdst = -1; /* Figure out DST. */ 695 tv[0].tv_sec = tv[1].tv_sec = mktime(t); 696 if (tv[0].tv_sec != -1) 697 return tv[0].tv_sec; 698 else 699 terr: 700 panic( 701 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 702 } 703 704 static long * 705 get_job_list(int argc, char *argv[], int *joblen) 706 { 707 int i, len; 708 long *joblist; 709 char *ep; 710 711 joblist = NULL; 712 len = argc; 713 if (len > 0) { 714 if ((joblist = malloc(len * sizeof(*joblist))) == NULL) 715 panic("out of memory"); 716 717 for (i = 0; i < argc; i++) { 718 errno = 0; 719 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 || 720 ep == argv[i] || *ep != '\0' || errno) 721 panic("invalid job number"); 722 } 723 } 724 725 *joblen = len; 726 return joblist; 727 } 728 729 int 730 main(int argc, char **argv) 731 { 732 int c; 733 char queue = DEFAULT_AT_QUEUE; 734 char queue_set = 0; 735 char *pgm; 736 737 int program = AT; /* our default program */ 738 const char *options = "q:f:t:rmvldbc"; /* default options for at */ 739 time_t timer; 740 long *joblist; 741 int joblen; 742 743 joblist = NULL; 744 joblen = 0; 745 timer = -1; 746 RELINQUISH_PRIVS 747 748 /* Eat any leading paths 749 */ 750 if ((pgm = strrchr(argv[0], '/')) == NULL) 751 pgm = argv[0]; 752 else 753 pgm++; 754 755 namep = pgm; 756 757 /* find out what this program is supposed to do 758 */ 759 if (strcmp(pgm, "atq") == 0) { 760 program = ATQ; 761 options = "q:v"; 762 } 763 else if (strcmp(pgm, "atrm") == 0) { 764 program = ATRM; 765 options = ""; 766 } 767 else if (strcmp(pgm, "batch") == 0) { 768 program = BATCH; 769 options = "f:q:mv"; 770 } 771 772 /* process whatever options we can process 773 */ 774 opterr=1; 775 while ((c=getopt(argc, argv, options)) != -1) 776 switch (c) { 777 case 'v': /* verify time settings */ 778 atverify = 1; 779 break; 780 781 case 'm': /* send mail when job is complete */ 782 send_mail = 1; 783 break; 784 785 case 'f': 786 atinput = optarg; 787 break; 788 789 case 'q': /* specify queue */ 790 if (strlen(optarg) > 1) 791 usage(); 792 793 atqueue = queue = *optarg; 794 if (!(islower(queue)||isupper(queue))) 795 usage(); 796 797 queue_set = 1; 798 break; 799 800 case 'd': 801 warnx("-d is deprecated; use -r instead"); 802 /* fall through to 'r' */ 803 804 case 'r': 805 if (program != AT) 806 usage(); 807 808 program = ATRM; 809 options = ""; 810 break; 811 812 case 't': 813 if (program != AT) 814 usage(); 815 timer = ttime(optarg); 816 break; 817 818 case 'l': 819 if (program != AT) 820 usage(); 821 822 program = ATQ; 823 options = "q:"; 824 break; 825 826 case 'b': 827 if (program != AT) 828 usage(); 829 830 program = BATCH; 831 options = "f:q:mv"; 832 break; 833 834 case 'c': 835 program = CAT; 836 options = ""; 837 break; 838 839 default: 840 usage(); 841 break; 842 } 843 /* end of options eating 844 */ 845 846 /* select our program 847 */ 848 if(!check_permission()) 849 errx(EXIT_FAILURE, "you do not have permission to use this program"); 850 switch (program) { 851 case ATQ: 852 853 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 854 855 if (queue_set == 0) 856 joblist = get_job_list(argc - optind, argv + optind, &joblen); 857 list_jobs(joblist, joblen); 858 break; 859 860 case ATRM: 861 862 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 863 864 process_jobs(argc, argv, ATRM); 865 break; 866 867 case CAT: 868 869 process_jobs(argc, argv, CAT); 870 break; 871 872 case AT: 873 /* 874 * If timer is > -1, then the user gave the time with -t. In that 875 * case, it's already been set. If not, set it now. 876 */ 877 if (timer == -1) 878 timer = parsetime(argc, argv); 879 880 if (atverify) 881 { 882 struct tm *tm = localtime(&timer); 883 fprintf(stderr, "%s\n", asctime(tm)); 884 } 885 writefile(timer, queue); 886 break; 887 888 case BATCH: 889 if (queue_set) 890 queue = toupper(queue); 891 else 892 queue = DEFAULT_BATCH_QUEUE; 893 894 if (argc > optind) 895 timer = parsetime(argc, argv); 896 else 897 timer = time(NULL); 898 899 if (atverify) 900 { 901 struct tm *tm = localtime(&timer); 902 fprintf(stderr, "%s\n", asctime(tm)); 903 } 904 905 writefile(timer, queue); 906 break; 907 908 default: 909 panic("internal error"); 910 break; 911 } 912 exit(EXIT_SUCCESS); 913 } 914