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 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 #ifdef __FreeBSD__ 473 (void) setlocale(LC_TIME, ""); 474 #endif 475 476 PRIV_START 477 478 if (chdir(ATJOB_DIR) != 0) 479 perr("cannot change to " ATJOB_DIR); 480 481 if ((spool = opendir(".")) == NULL) 482 perr("cannot open " ATJOB_DIR); 483 484 /* Loop over every file in the directory 485 */ 486 while((dirent = readdir(spool)) != NULL) { 487 if (stat(dirent->d_name, &buf) != 0) 488 perr("cannot stat in " ATJOB_DIR); 489 490 /* See it's a regular file and has its x bit turned on and 491 * is the user's 492 */ 493 if (!S_ISREG(buf.st_mode) 494 || ((buf.st_uid != real_uid) && ! (real_uid == 0)) 495 || !(S_IXUSR & buf.st_mode || atverify)) 496 continue; 497 498 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 499 continue; 500 501 /* If jobs are given, only list those jobs */ 502 if (joblist && !in_job_list(jobno, joblist, len)) 503 continue; 504 505 if (atqueue && (queue != atqueue)) 506 continue; 507 508 runtimer = 60*(time_t) ctm; 509 runtime = *localtime(&runtimer); 510 strftime(timestr, TIMESIZE, "%+", &runtime); 511 if (first) { 512 printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n"); 513 first=0; 514 } 515 pw = getpwuid(buf.st_uid); 516 517 printf("%s\t%-16s%c%s\t%ld\n", 518 timestr, 519 pw ? pw->pw_name : "???", 520 queue, 521 (S_IXUSR & buf.st_mode) ? "":"(done)", 522 jobno); 523 } 524 PRIV_END 525 closedir(spool); 526 } 527 528 static void 529 process_jobs(int argc, char **argv, int what) 530 { 531 /* Delete every argument (job - ID) given 532 */ 533 int i; 534 int rc; 535 int nofJobs; 536 int nofDone; 537 int statErrno; 538 struct stat buf; 539 DIR *spool; 540 struct dirent *dirent; 541 unsigned long ctm; 542 char queue; 543 long jobno; 544 545 nofJobs = argc - optind; 546 nofDone = 0; 547 548 PRIV_START 549 550 if (chdir(ATJOB_DIR) != 0) 551 perr("cannot change to " ATJOB_DIR); 552 553 if ((spool = opendir(".")) == NULL) 554 perr("cannot open " ATJOB_DIR); 555 556 PRIV_END 557 558 /* Loop over every file in the directory 559 */ 560 while((dirent = readdir(spool)) != NULL) { 561 562 PRIV_START 563 rc = stat(dirent->d_name, &buf); 564 statErrno = errno; 565 PRIV_END 566 /* There's a race condition between readdir above and stat here: 567 * another atrm process could have removed the file from the spool 568 * directory under our nose. If this happens, stat will set errno to 569 * ENOENT, which we shouldn't treat as fatal. 570 */ 571 if (rc != 0) { 572 if (statErrno == ENOENT) 573 continue; 574 else 575 perr("cannot stat in " ATJOB_DIR); 576 } 577 578 if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3) 579 continue; 580 581 for (i=optind; i < argc; i++) { 582 if (atoi(argv[i]) == jobno) { 583 if ((buf.st_uid != real_uid) && !(real_uid == 0)) 584 errx(EXIT_FAILURE, "%s: not owner", argv[i]); 585 switch (what) { 586 case ATRM: 587 588 PRIV_START 589 590 if (unlink(dirent->d_name) != 0) 591 perr(dirent->d_name); 592 593 PRIV_END 594 595 break; 596 597 case CAT: 598 { 599 FILE *fp; 600 int ch; 601 602 PRIV_START 603 604 fp = fopen(dirent->d_name,"r"); 605 606 PRIV_END 607 608 if (!fp) { 609 perr("cannot open file"); 610 } 611 while((ch = getc(fp)) != EOF) { 612 putchar(ch); 613 } 614 fclose(fp); 615 } 616 break; 617 618 default: 619 errx(EXIT_FAILURE, "internal error, process_jobs = %d", 620 what); 621 } 622 623 /* All arguments have been processed 624 */ 625 if (++nofDone == nofJobs) 626 goto end; 627 } 628 } 629 } 630 end: 631 closedir(spool); 632 } /* delete_jobs */ 633 634 #define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; 635 636 static time_t 637 ttime(const char *arg) 638 { 639 /* 640 * This is pretty much a copy of stime_arg1() from touch.c. I changed 641 * the return value and the argument list because it's more convenient 642 * (IMO) to do everything in one place. - Joe Halpin 643 */ 644 struct timeval tv[2]; 645 time_t now; 646 struct tm *t; 647 int yearset; 648 char *p; 649 650 if (gettimeofday(&tv[0], NULL)) 651 panic("Cannot get current time"); 652 653 /* Start with the current time. */ 654 now = tv[0].tv_sec; 655 if ((t = localtime(&now)) == NULL) 656 panic("localtime"); 657 /* [[CC]YY]MMDDhhmm[.SS] */ 658 if ((p = strchr(arg, '.')) == NULL) 659 t->tm_sec = 0; /* Seconds defaults to 0. */ 660 else { 661 if (strlen(p + 1) != 2) 662 goto terr; 663 *p++ = '\0'; 664 t->tm_sec = ATOI2(p); 665 } 666 667 yearset = 0; 668 switch(strlen(arg)) { 669 case 12: /* CCYYMMDDhhmm */ 670 t->tm_year = ATOI2(arg); 671 t->tm_year *= 100; 672 yearset = 1; 673 /* FALLTHROUGH */ 674 case 10: /* YYMMDDhhmm */ 675 if (yearset) { 676 yearset = ATOI2(arg); 677 t->tm_year += yearset; 678 } else { 679 yearset = ATOI2(arg); 680 t->tm_year = yearset + 2000; 681 } 682 t->tm_year -= 1900; /* Convert to UNIX time. */ 683 /* FALLTHROUGH */ 684 case 8: /* MMDDhhmm */ 685 t->tm_mon = ATOI2(arg); 686 --t->tm_mon; /* Convert from 01-12 to 00-11 */ 687 t->tm_mday = ATOI2(arg); 688 t->tm_hour = ATOI2(arg); 689 t->tm_min = ATOI2(arg); 690 break; 691 default: 692 goto terr; 693 } 694 695 t->tm_isdst = -1; /* Figure out DST. */ 696 tv[0].tv_sec = tv[1].tv_sec = mktime(t); 697 if (tv[0].tv_sec != -1) 698 return tv[0].tv_sec; 699 else 700 terr: 701 panic( 702 "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]"); 703 } 704 705 static long * 706 get_job_list(int argc, char *argv[], int *joblen) 707 { 708 int i, len; 709 long *joblist; 710 char *ep; 711 712 joblist = NULL; 713 len = argc; 714 if (len > 0) { 715 if ((joblist = malloc(len * sizeof(*joblist))) == NULL) 716 panic("out of memory"); 717 718 for (i = 0; i < argc; i++) { 719 errno = 0; 720 if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 || 721 ep == argv[i] || *ep != '\0' || errno) 722 panic("invalid job number"); 723 } 724 } 725 726 *joblen = len; 727 return joblist; 728 } 729 730 int 731 main(int argc, char **argv) 732 { 733 int c; 734 char queue = DEFAULT_AT_QUEUE; 735 char queue_set = 0; 736 char *pgm; 737 738 int program = AT; /* our default program */ 739 const char *options = "q:f:t:rmvldbc"; /* default options for at */ 740 time_t timer; 741 long *joblist; 742 int joblen; 743 744 joblist = NULL; 745 joblen = 0; 746 timer = -1; 747 RELINQUISH_PRIVS 748 749 /* Eat any leading paths 750 */ 751 if ((pgm = strrchr(argv[0], '/')) == NULL) 752 pgm = argv[0]; 753 else 754 pgm++; 755 756 namep = pgm; 757 758 /* find out what this program is supposed to do 759 */ 760 if (strcmp(pgm, "atq") == 0) { 761 program = ATQ; 762 options = "q:v"; 763 } 764 else if (strcmp(pgm, "atrm") == 0) { 765 program = ATRM; 766 options = ""; 767 } 768 else if (strcmp(pgm, "batch") == 0) { 769 program = BATCH; 770 options = "f:q:mv"; 771 } 772 773 /* process whatever options we can process 774 */ 775 opterr=1; 776 while ((c=getopt(argc, argv, options)) != -1) 777 switch (c) { 778 case 'v': /* verify time settings */ 779 atverify = 1; 780 break; 781 782 case 'm': /* send mail when job is complete */ 783 send_mail = 1; 784 break; 785 786 case 'f': 787 atinput = optarg; 788 break; 789 790 case 'q': /* specify queue */ 791 if (strlen(optarg) > 1) 792 usage(); 793 794 atqueue = queue = *optarg; 795 if (!(islower(queue)||isupper(queue))) 796 usage(); 797 798 queue_set = 1; 799 break; 800 801 case 'd': 802 warnx("-d is deprecated; use -r instead"); 803 /* fall through to 'r' */ 804 805 case 'r': 806 if (program != AT) 807 usage(); 808 809 program = ATRM; 810 options = ""; 811 break; 812 813 case 't': 814 if (program != AT) 815 usage(); 816 timer = ttime(optarg); 817 break; 818 819 case 'l': 820 if (program != AT) 821 usage(); 822 823 program = ATQ; 824 options = "q:"; 825 break; 826 827 case 'b': 828 if (program != AT) 829 usage(); 830 831 program = BATCH; 832 options = "f:q:mv"; 833 break; 834 835 case 'c': 836 program = CAT; 837 options = ""; 838 break; 839 840 default: 841 usage(); 842 break; 843 } 844 /* end of options eating 845 */ 846 847 /* select our program 848 */ 849 if(!check_permission()) 850 errx(EXIT_FAILURE, "you do not have permission to use this program"); 851 switch (program) { 852 case ATQ: 853 854 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 855 856 if (queue_set == 0) 857 joblist = get_job_list(argc - optind, argv + optind, &joblen); 858 list_jobs(joblist, joblen); 859 break; 860 861 case ATRM: 862 863 REDUCE_PRIV(DAEMON_UID, DAEMON_GID) 864 865 process_jobs(argc, argv, ATRM); 866 break; 867 868 case CAT: 869 870 process_jobs(argc, argv, CAT); 871 break; 872 873 case AT: 874 /* 875 * If timer is > -1, then the user gave the time with -t. In that 876 * case, it's already been set. If not, set it now. 877 */ 878 if (timer == -1) 879 timer = parsetime(argc, argv); 880 881 if (atverify) 882 { 883 struct tm *tm = localtime(&timer); 884 fprintf(stderr, "%s\n", asctime(tm)); 885 } 886 writefile(timer, queue); 887 break; 888 889 case BATCH: 890 if (queue_set) 891 queue = toupper(queue); 892 else 893 queue = DEFAULT_BATCH_QUEUE; 894 895 if (argc > optind) 896 timer = parsetime(argc, argv); 897 else 898 timer = time(NULL); 899 900 if (atverify) 901 { 902 struct tm *tm = localtime(&timer); 903 fprintf(stderr, "%s\n", asctime(tm)); 904 } 905 906 writefile(timer, queue); 907 break; 908 909 default: 910 panic("internal error"); 911 break; 912 } 913 exit(EXIT_SUCCESS); 914 } 915