crontab.c revision 135174
12311Sjkh/* Copyright 1988,1990,1993,1994 by Paul Vixie 22311Sjkh * All rights reserved 32311Sjkh * 42311Sjkh * Distribute freely, except: don't remove my name from the source or 52311Sjkh * documentation (don't take credit for my work), mark your changes (don't 62311Sjkh * get me blamed for your possible bugs), don't alter or remove this 72311Sjkh * notice. May be sold if buildable source is provided to buyer. No 82311Sjkh * warrantee of any kind, express or implied, is included with this 92311Sjkh * software; use at your own risk, responsibility for damages (if any) to 102311Sjkh * anyone resulting from the use of this software rests entirely with the 112311Sjkh * user. 122311Sjkh * 132311Sjkh * Send bug reports, bug fixes, enhancements, requests, flames, etc., and 142311Sjkh * I'll try to keep a version up to date. I can be reached as follows: 152311Sjkh * Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul 165176Sache * From Id: crontab.c,v 2.13 1994/01/17 03:20:37 vixie Exp 172311Sjkh */ 182311Sjkh 192311Sjkh#if !defined(lint) && !defined(LINT) 2029452Scharnierstatic const char rcsid[] = 2150479Speter "$FreeBSD: head/usr.sbin/cron/crontab/crontab.c 135174 2004-09-13 21:04:30Z dds $"; 222311Sjkh#endif 232311Sjkh 242311Sjkh/* crontab - install and manage per-user crontab files 252311Sjkh * vix 02may87 [RCS has the rest of the log] 262311Sjkh * vix 26jan87 [original] 272311Sjkh */ 282311Sjkh 292311Sjkh#define MAIN_PROGRAM 302311Sjkh 312311Sjkh#include "cron.h" 322311Sjkh#include <errno.h> 332311Sjkh#include <fcntl.h> 3469793Sobrien#include <paths.h> 352311Sjkh#include <sys/file.h> 362311Sjkh#include <sys/stat.h> 372311Sjkh#ifdef USE_UTIMES 382311Sjkh# include <sys/time.h> 392311Sjkh#else 402311Sjkh# include <time.h> 412311Sjkh# include <utime.h> 422311Sjkh#endif 432311Sjkh#if defined(POSIX) 442311Sjkh# include <locale.h> 452311Sjkh#endif 462311Sjkh 472311Sjkh 482311Sjkh#define NHEADER_LINES 3 492311Sjkh 502311Sjkh 512311Sjkhenum opt_t { opt_unknown, opt_list, opt_delete, opt_edit, opt_replace }; 522311Sjkh 532311Sjkh#if DEBUGGING 542311Sjkhstatic char *Options[] = { "???", "list", "delete", "edit", "replace" }; 552311Sjkh#endif 562311Sjkh 572311Sjkh 582311Sjkhstatic PID_T Pid; 592311Sjkhstatic char User[MAX_UNAME], RealUser[MAX_UNAME]; 602311Sjkhstatic char Filename[MAX_FNAME]; 612311Sjkhstatic FILE *NewCrontab; 622311Sjkhstatic int CheckErrorCount; 632311Sjkhstatic enum opt_t Option; 642311Sjkhstatic struct passwd *pw; 652311Sjkhstatic void list_cmd __P((void)), 662311Sjkh delete_cmd __P((void)), 672311Sjkh edit_cmd __P((void)), 682311Sjkh poke_daemon __P((void)), 692311Sjkh check_error __P((char *)), 702311Sjkh parse_args __P((int c, char *v[])); 712311Sjkhstatic int replace_cmd __P((void)); 722311Sjkh 732311Sjkh 742311Sjkhstatic void 752311Sjkhusage(msg) 762311Sjkh char *msg; 772311Sjkh{ 7829452Scharnier fprintf(stderr, "crontab: usage error: %s\n", msg); 7929452Scharnier fprintf(stderr, "%s\n%s\n", 8029452Scharnier "usage: crontab [-u user] file", 8129452Scharnier " crontab [-u user] { -e | -l | -r }"); 822311Sjkh exit(ERROR_EXIT); 832311Sjkh} 842311Sjkh 852311Sjkh 862311Sjkhint 872311Sjkhmain(argc, argv) 882311Sjkh int argc; 892311Sjkh char *argv[]; 902311Sjkh{ 912311Sjkh int exitstatus; 922311Sjkh 932311Sjkh Pid = getpid(); 942311Sjkh ProgramName = argv[0]; 952311Sjkh 962311Sjkh#if defined(POSIX) 972311Sjkh setlocale(LC_ALL, ""); 982311Sjkh#endif 992311Sjkh 1002311Sjkh#if defined(BSD) 1012311Sjkh setlinebuf(stderr); 1022311Sjkh#endif 1032311Sjkh parse_args(argc, argv); /* sets many globals, opens a file */ 1042311Sjkh set_cron_uid(); 1052311Sjkh set_cron_cwd(); 1062311Sjkh if (!allowed(User)) { 10729452Scharnier warnx("you (%s) are not allowed to use this program", User); 1082311Sjkh log_it(RealUser, Pid, "AUTH", "crontab command not allowed"); 1092311Sjkh exit(ERROR_EXIT); 1102311Sjkh } 1112311Sjkh exitstatus = OK_EXIT; 1122311Sjkh switch (Option) { 1132311Sjkh case opt_list: list_cmd(); 1142311Sjkh break; 1152311Sjkh case opt_delete: delete_cmd(); 1162311Sjkh break; 1172311Sjkh case opt_edit: edit_cmd(); 1182311Sjkh break; 1192311Sjkh case opt_replace: if (replace_cmd() < 0) 1202311Sjkh exitstatus = ERROR_EXIT; 1212311Sjkh break; 12229452Scharnier case opt_unknown: 12329452Scharnier break; 1242311Sjkh } 125104326Sdd exit(exitstatus); 1262311Sjkh /*NOTREACHED*/ 1272311Sjkh} 1282311Sjkh 1298857Srgrimes 1302311Sjkhstatic void 1312311Sjkhparse_args(argc, argv) 1322311Sjkh int argc; 1332311Sjkh char *argv[]; 1342311Sjkh{ 1352311Sjkh int argch; 1362311Sjkh 13729452Scharnier if (!(pw = getpwuid(getuid()))) 13829452Scharnier errx(ERROR_EXIT, "your UID isn't in the passwd file, bailing out"); 13920573Spst (void) strncpy(User, pw->pw_name, (sizeof User)-1); 14020573Spst User[(sizeof User)-1] = '\0'; 1412311Sjkh strcpy(RealUser, User); 1422311Sjkh Filename[0] = '\0'; 1432311Sjkh Option = opt_unknown; 14424428Simp while ((argch = getopt(argc, argv, "u:lerx:")) != -1) { 1452311Sjkh switch (argch) { 1462311Sjkh case 'x': 1472311Sjkh if (!set_debug_flags(optarg)) 1482311Sjkh usage("bad debug option"); 1492311Sjkh break; 1502311Sjkh case 'u': 1512311Sjkh if (getuid() != ROOT_UID) 15229452Scharnier errx(ERROR_EXIT, "must be privileged to use -u"); 1532311Sjkh if (!(pw = getpwnam(optarg))) 15429452Scharnier errx(ERROR_EXIT, "user `%s' unknown", optarg); 15520573Spst (void) strncpy(User, pw->pw_name, (sizeof User)-1); 15620573Spst User[(sizeof User)-1] = '\0'; 1572311Sjkh break; 1582311Sjkh case 'l': 1592311Sjkh if (Option != opt_unknown) 1602311Sjkh usage("only one operation permitted"); 1612311Sjkh Option = opt_list; 1622311Sjkh break; 1632311Sjkh case 'r': 1642311Sjkh if (Option != opt_unknown) 1652311Sjkh usage("only one operation permitted"); 1662311Sjkh Option = opt_delete; 1672311Sjkh break; 1682311Sjkh case 'e': 1692311Sjkh if (Option != opt_unknown) 1702311Sjkh usage("only one operation permitted"); 1712311Sjkh Option = opt_edit; 1722311Sjkh break; 1732311Sjkh default: 1742311Sjkh usage("unrecognized option"); 1752311Sjkh } 1762311Sjkh } 1772311Sjkh 1782311Sjkh endpwent(); 1792311Sjkh 1802311Sjkh if (Option != opt_unknown) { 1812311Sjkh if (argv[optind] != NULL) { 1822311Sjkh usage("no arguments permitted after this option"); 1832311Sjkh } 1842311Sjkh } else { 1852311Sjkh if (argv[optind] != NULL) { 1862311Sjkh Option = opt_replace; 18720573Spst (void) strncpy (Filename, argv[optind], (sizeof Filename)-1); 18820573Spst Filename[(sizeof Filename)-1] = '\0'; 18920573Spst 1902311Sjkh } else { 1912311Sjkh usage("file name must be specified for replace"); 1922311Sjkh } 1932311Sjkh } 1942311Sjkh 1952311Sjkh if (Option == opt_replace) { 1962311Sjkh /* we have to open the file here because we're going to 1972311Sjkh * chdir(2) into /var/cron before we get around to 1982311Sjkh * reading the file. 1992311Sjkh */ 2002311Sjkh if (!strcmp(Filename, "-")) { 2012311Sjkh NewCrontab = stdin; 2022311Sjkh } else { 2032311Sjkh /* relinquish the setuid status of the binary during 2042311Sjkh * the open, lest nonroot users read files they should 2052311Sjkh * not be able to read. we can't use access() here 2062311Sjkh * since there's a race condition. thanks go out to 2072311Sjkh * Arnt Gulbrandsen <agulbra@pvv.unit.no> for spotting 2082311Sjkh * the race. 2092311Sjkh */ 2102311Sjkh 21129452Scharnier if (swap_uids() < OK) 21229452Scharnier err(ERROR_EXIT, "swapping uids"); 21329452Scharnier if (!(NewCrontab = fopen(Filename, "r"))) 21429452Scharnier err(ERROR_EXIT, "%s", Filename); 21529452Scharnier if (swap_uids() < OK) 21629452Scharnier err(ERROR_EXIT, "swapping uids back"); 2172311Sjkh } 2182311Sjkh } 2192311Sjkh 2202311Sjkh Debug(DMISC, ("user=%s, file=%s, option=%s\n", 2212311Sjkh User, Filename, Options[(int)Option])) 2222311Sjkh} 2232311Sjkh 224135174Sddsstatic void 225135174Sddscopy_file(FILE *in, FILE *out) { 226135174Sdds int x, ch; 2272311Sjkh 228135174Sdds Set_LineNum(1) 229135174Sdds /* ignore the top few comments since we probably put them there. 230135174Sdds */ 231135174Sdds for (x = 0; x < NHEADER_LINES; x++) { 232135174Sdds ch = get_char(in); 233135174Sdds if (EOF == ch) 234135174Sdds break; 235135174Sdds if ('#' != ch) { 236135174Sdds putc(ch, out); 237135174Sdds break; 238135174Sdds } 239135174Sdds while (EOF != (ch = get_char(in))) 240135174Sdds if (ch == '\n') 241135174Sdds break; 242135174Sdds if (EOF == ch) 243135174Sdds break; 244135174Sdds } 245135174Sdds 246135174Sdds /* copy the rest of the crontab (if any) to the output file. 247135174Sdds */ 248135174Sdds if (EOF != ch) 249135174Sdds while (EOF != (ch = get_char(in))) 250135174Sdds putc(ch, out); 251135174Sdds} 252135174Sdds 2532311Sjkhstatic void 2542311Sjkhlist_cmd() { 2552311Sjkh char n[MAX_FNAME]; 2562311Sjkh FILE *f; 2572311Sjkh 2582311Sjkh log_it(RealUser, Pid, "LIST", User); 2592311Sjkh (void) sprintf(n, CRON_TAB(User)); 2602311Sjkh if (!(f = fopen(n, "r"))) { 2612311Sjkh if (errno == ENOENT) 26229452Scharnier errx(ERROR_EXIT, "no crontab for %s", User); 2632311Sjkh else 26429452Scharnier err(ERROR_EXIT, "%s", n); 2652311Sjkh } 2662311Sjkh 2672311Sjkh /* file is open. copy to stdout, close. 2682311Sjkh */ 269135174Sdds copy_file(f, stdout); 2702311Sjkh fclose(f); 2712311Sjkh} 2722311Sjkh 2732311Sjkh 2742311Sjkhstatic void 2752311Sjkhdelete_cmd() { 2762311Sjkh char n[MAX_FNAME]; 27767127Spaul int ch, first; 2782311Sjkh 27967127Spaul if (isatty(STDIN_FILENO)) { 28067127Spaul (void)fprintf(stderr, "remove crontab for %s? ", User); 28167127Spaul first = ch = getchar(); 28267127Spaul while (ch != '\n' && ch != EOF) 28367127Spaul ch = getchar(); 28467127Spaul if (first != 'y' && first != 'Y') 28567127Spaul return; 28667127Spaul } 28767127Spaul 2882311Sjkh log_it(RealUser, Pid, "DELETE", User); 2892311Sjkh (void) sprintf(n, CRON_TAB(User)); 2902311Sjkh if (unlink(n)) { 2912311Sjkh if (errno == ENOENT) 29229452Scharnier errx(ERROR_EXIT, "no crontab for %s", User); 2932311Sjkh else 29429452Scharnier err(ERROR_EXIT, "%s", n); 2952311Sjkh } 2962311Sjkh poke_daemon(); 2972311Sjkh} 2982311Sjkh 2992311Sjkh 3002311Sjkhstatic void 3012311Sjkhcheck_error(msg) 3022311Sjkh char *msg; 3032311Sjkh{ 3042311Sjkh CheckErrorCount++; 3052311Sjkh fprintf(stderr, "\"%s\":%d: %s\n", Filename, LineNumber-1, msg); 3062311Sjkh} 3072311Sjkh 3082311Sjkh 3092311Sjkhstatic void 3102311Sjkhedit_cmd() { 3112311Sjkh char n[MAX_FNAME], q[MAX_TEMPSTR], *editor; 3122311Sjkh FILE *f; 313135174Sdds int t; 31468388Sdwmalone struct stat statbuf, fsbuf; 3152311Sjkh time_t mtime; 3162311Sjkh WAIT_T waiter; 3172311Sjkh PID_T pid, xpid; 31820573Spst mode_t um; 319135165Sdds int syntax_error = 0; 3202311Sjkh 3212311Sjkh log_it(RealUser, Pid, "BEGIN EDIT", User); 3222311Sjkh (void) sprintf(n, CRON_TAB(User)); 3232311Sjkh if (!(f = fopen(n, "r"))) { 32429452Scharnier if (errno != ENOENT) 32529452Scharnier err(ERROR_EXIT, "%s", n); 32629452Scharnier warnx("no crontab for %s - using an empty one", User); 32769793Sobrien if (!(f = fopen(_PATH_DEVNULL, "r"))) 32869793Sobrien err(ERROR_EXIT, _PATH_DEVNULL); 3292311Sjkh } 3302311Sjkh 33120573Spst um = umask(077); 33220573Spst (void) sprintf(Filename, "/tmp/crontab.XXXXXXXXXX"); 33320573Spst if ((t = mkstemp(Filename)) == -1) { 33429452Scharnier warn("%s", Filename); 33520573Spst (void) umask(um); 3362311Sjkh goto fatal; 3372311Sjkh } 33820573Spst (void) umask(um); 3392311Sjkh#ifdef HAS_FCHOWN 3402311Sjkh if (fchown(t, getuid(), getgid()) < 0) { 3412311Sjkh#else 3422311Sjkh if (chown(Filename, getuid(), getgid()) < 0) { 3432311Sjkh#endif 34429452Scharnier warn("fchown"); 3452311Sjkh goto fatal; 3462311Sjkh } 34768388Sdwmalone if (!(NewCrontab = fdopen(t, "r+"))) { 34829452Scharnier warn("fdopen"); 3492311Sjkh goto fatal; 3502311Sjkh } 3512311Sjkh 352135174Sdds copy_file(f, NewCrontab); 3532311Sjkh fclose(f); 35468388Sdwmalone if (fflush(NewCrontab)) 35529452Scharnier err(ERROR_EXIT, "%s", Filename); 35668388Sdwmalone if (fstat(t, &fsbuf) < 0) { 35768388Sdwmalone warn("unable to fstat temp file"); 35868388Sdwmalone goto fatal; 35968388Sdwmalone } 3602311Sjkh again: 3615176Sache if (stat(Filename, &statbuf) < 0) { 36229452Scharnier warn("stat"); 3632311Sjkh fatal: unlink(Filename); 3642311Sjkh exit(ERROR_EXIT); 3652311Sjkh } 36668388Sdwmalone if (statbuf.st_dev != fsbuf.st_dev || statbuf.st_ino != fsbuf.st_ino) 36768388Sdwmalone errx(ERROR_EXIT, "temp file must be edited in place"); 3682311Sjkh mtime = statbuf.st_mtime; 3692311Sjkh 3702311Sjkh if ((!(editor = getenv("VISUAL"))) 3712311Sjkh && (!(editor = getenv("EDITOR"))) 3722311Sjkh ) { 3732311Sjkh editor = EDITOR; 3742311Sjkh } 3752311Sjkh 3762311Sjkh /* we still have the file open. editors will generally rewrite the 3772311Sjkh * original file rather than renaming/unlinking it and starting a 3782311Sjkh * new one; even backup files are supposed to be made by copying 3792311Sjkh * rather than by renaming. if some editor does not support this, 3802311Sjkh * then don't use it. the security problems are more severe if we 3812311Sjkh * close and reopen the file around the edit. 3822311Sjkh */ 3832311Sjkh 3842311Sjkh switch (pid = fork()) { 3852311Sjkh case -1: 38629452Scharnier warn("fork"); 3872311Sjkh goto fatal; 3882311Sjkh case 0: 3892311Sjkh /* child */ 39029452Scharnier if (setuid(getuid()) < 0) 39129452Scharnier err(ERROR_EXIT, "setuid(getuid())"); 39229452Scharnier if (chdir("/tmp") < 0) 39329452Scharnier err(ERROR_EXIT, "chdir(/tmp)"); 39429452Scharnier if (strlen(editor) + strlen(Filename) + 2 >= MAX_TEMPSTR) 39529452Scharnier errx(ERROR_EXIT, "editor or filename too long"); 39679452Sbrian execlp(editor, editor, Filename, (char *)NULL); 39729452Scharnier err(ERROR_EXIT, "%s", editor); 3982311Sjkh /*NOTREACHED*/ 3992311Sjkh default: 4002311Sjkh /* parent */ 4012311Sjkh break; 4022311Sjkh } 4032311Sjkh 4042311Sjkh /* parent */ 40515161Sscrappy { 40615161Sscrappy void (*f[4])(); 40715161Sscrappy f[0] = signal(SIGHUP, SIG_IGN); 40815161Sscrappy f[1] = signal(SIGINT, SIG_IGN); 40915161Sscrappy f[2] = signal(SIGTERM, SIG_IGN); 4102311Sjkh xpid = wait(&waiter); 41115161Sscrappy signal(SIGHUP, f[0]); 41215161Sscrappy signal(SIGINT, f[1]); 41315161Sscrappy signal(SIGTERM, f[2]); 41415161Sscrappy } 4152311Sjkh if (xpid != pid) { 41629452Scharnier warnx("wrong PID (%d != %d) from \"%s\"", xpid, pid, editor); 4172311Sjkh goto fatal; 4182311Sjkh } 4192311Sjkh if (WIFEXITED(waiter) && WEXITSTATUS(waiter)) { 42029452Scharnier warnx("\"%s\" exited with status %d", editor, WEXITSTATUS(waiter)); 4212311Sjkh goto fatal; 4222311Sjkh } 4232311Sjkh if (WIFSIGNALED(waiter)) { 42429452Scharnier warnx("\"%s\" killed; signal %d (%score dumped)", 42529452Scharnier editor, WTERMSIG(waiter), WCOREDUMP(waiter) ?"" :"no "); 4262311Sjkh goto fatal; 4272311Sjkh } 4285176Sache if (stat(Filename, &statbuf) < 0) { 42929452Scharnier warn("stat"); 4302311Sjkh goto fatal; 4312311Sjkh } 43268388Sdwmalone if (statbuf.st_dev != fsbuf.st_dev || statbuf.st_ino != fsbuf.st_ino) 43368388Sdwmalone errx(ERROR_EXIT, "temp file must be edited in place"); 434135165Sdds if (mtime == statbuf.st_mtime && !syntax_error) { 43529452Scharnier warnx("no changes made to crontab"); 4362311Sjkh goto remove; 4372311Sjkh } 43829452Scharnier warnx("installing new crontab"); 4392311Sjkh switch (replace_cmd()) { 440135165Sdds case 0: /* Success */ 4412311Sjkh break; 442135165Sdds case -1: /* Syntax error */ 4432311Sjkh for (;;) { 4442311Sjkh printf("Do you want to retry the same edit? "); 4452311Sjkh fflush(stdout); 4462311Sjkh q[0] = '\0'; 4472311Sjkh (void) fgets(q, sizeof q, stdin); 4482311Sjkh switch (islower(q[0]) ? q[0] : tolower(q[0])) { 4492311Sjkh case 'y': 450135165Sdds syntax_error = 1; 4512311Sjkh goto again; 4522311Sjkh case 'n': 4532311Sjkh goto abandon; 4542311Sjkh default: 4552311Sjkh fprintf(stderr, "Enter Y or N\n"); 4562311Sjkh } 4572311Sjkh } 4582311Sjkh /*NOTREACHED*/ 459135165Sdds case -2: /* Install error */ 4602311Sjkh abandon: 46129452Scharnier warnx("edits left in %s", Filename); 4622311Sjkh goto done; 4632311Sjkh default: 46429452Scharnier warnx("panic: bad switch() in replace_cmd()"); 4652311Sjkh goto fatal; 4662311Sjkh } 4672311Sjkh remove: 4682311Sjkh unlink(Filename); 4692311Sjkh done: 4702311Sjkh log_it(RealUser, Pid, "END EDIT", User); 4712311Sjkh} 4722311Sjkh 4738857Srgrimes 4742311Sjkh/* returns 0 on success 4752311Sjkh * -1 on syntax error 4762311Sjkh * -2 on install error 4772311Sjkh */ 4782311Sjkhstatic int 4792311Sjkhreplace_cmd() { 4802311Sjkh char n[MAX_FNAME], envstr[MAX_ENVSTR], tn[MAX_FNAME]; 4812311Sjkh FILE *tmp; 4822311Sjkh int ch, eof; 4832311Sjkh entry *e; 4842311Sjkh time_t now = time(NULL); 4852311Sjkh char **envp = env_init(); 4862311Sjkh 48720573Spst if (envp == NULL) { 48829452Scharnier warnx("cannot allocate memory"); 48920573Spst return (-2); 49020573Spst } 49120573Spst 4922311Sjkh (void) sprintf(n, "tmp.%d", Pid); 4932311Sjkh (void) sprintf(tn, CRON_TAB(n)); 4942311Sjkh if (!(tmp = fopen(tn, "w+"))) { 49529452Scharnier warn("%s", tn); 4962311Sjkh return (-2); 4972311Sjkh } 4982311Sjkh 4992311Sjkh /* write a signature at the top of the file. 5002311Sjkh * 5012311Sjkh * VERY IMPORTANT: make sure NHEADER_LINES agrees with this code. 5022311Sjkh */ 5032311Sjkh fprintf(tmp, "# DO NOT EDIT THIS FILE - edit the master and reinstall.\n"); 5042311Sjkh fprintf(tmp, "# (%s installed on %-24.24s)\n", Filename, ctime(&now)); 5052311Sjkh fprintf(tmp, "# (Cron version -- %s)\n", rcsid); 5062311Sjkh 5072311Sjkh /* copy the crontab to the tmp 5082311Sjkh */ 50968388Sdwmalone rewind(NewCrontab); 5102311Sjkh Set_LineNum(1) 5112311Sjkh while (EOF != (ch = get_char(NewCrontab))) 5122311Sjkh putc(ch, tmp); 5132311Sjkh ftruncate(fileno(tmp), ftell(tmp)); 5142311Sjkh fflush(tmp); rewind(tmp); 5152311Sjkh 5162311Sjkh if (ferror(tmp)) { 51729452Scharnier warnx("error while writing new crontab to %s", tn); 5182311Sjkh fclose(tmp); unlink(tn); 5192311Sjkh return (-2); 5202311Sjkh } 5212311Sjkh 5222311Sjkh /* check the syntax of the file being installed. 5232311Sjkh */ 5242311Sjkh 5252311Sjkh /* BUG: was reporting errors after the EOF if there were any errors 5262311Sjkh * in the file proper -- kludged it by stopping after first error. 5272311Sjkh * vix 31mar87 5282311Sjkh */ 5292311Sjkh Set_LineNum(1 - NHEADER_LINES) 5302311Sjkh CheckErrorCount = 0; eof = FALSE; 5312311Sjkh while (!CheckErrorCount && !eof) { 5322311Sjkh switch (load_env(envstr, tmp)) { 5332311Sjkh case ERR: 5342311Sjkh eof = TRUE; 5352311Sjkh break; 5362311Sjkh case FALSE: 5372311Sjkh e = load_entry(tmp, check_error, pw, envp); 5382311Sjkh if (e) 5392311Sjkh free(e); 5402311Sjkh break; 5412311Sjkh case TRUE: 5422311Sjkh break; 5432311Sjkh } 5442311Sjkh } 5452311Sjkh 5462311Sjkh if (CheckErrorCount != 0) { 54729452Scharnier warnx("errors in crontab file, can't install"); 5482311Sjkh fclose(tmp); unlink(tn); 5492311Sjkh return (-1); 5502311Sjkh } 5512311Sjkh 5522311Sjkh#ifdef HAS_FCHOWN 5532311Sjkh if (fchown(fileno(tmp), ROOT_UID, -1) < OK) 5542311Sjkh#else 5552311Sjkh if (chown(tn, ROOT_UID, -1) < OK) 5562311Sjkh#endif 5572311Sjkh { 55829452Scharnier warn("chown"); 5592311Sjkh fclose(tmp); unlink(tn); 5602311Sjkh return (-2); 5612311Sjkh } 5622311Sjkh 5632311Sjkh#ifdef HAS_FCHMOD 5642311Sjkh if (fchmod(fileno(tmp), 0600) < OK) 5652311Sjkh#else 5662311Sjkh if (chmod(tn, 0600) < OK) 5672311Sjkh#endif 5682311Sjkh { 56929452Scharnier warn("chown"); 5702311Sjkh fclose(tmp); unlink(tn); 5712311Sjkh return (-2); 5722311Sjkh } 5732311Sjkh 5742311Sjkh if (fclose(tmp) == EOF) { 57529452Scharnier warn("fclose"); 5762311Sjkh unlink(tn); 5772311Sjkh return (-2); 5782311Sjkh } 5792311Sjkh 5802311Sjkh (void) sprintf(n, CRON_TAB(User)); 5812311Sjkh if (rename(tn, n)) { 58229452Scharnier warn("error renaming %s to %s", tn, n); 5832311Sjkh unlink(tn); 5842311Sjkh return (-2); 5852311Sjkh } 5862311Sjkh log_it(RealUser, Pid, "REPLACE", User); 5872311Sjkh 5882311Sjkh poke_daemon(); 5892311Sjkh 5902311Sjkh return (0); 5912311Sjkh} 5922311Sjkh 5932311Sjkh 5942311Sjkhstatic void 5952311Sjkhpoke_daemon() { 5962311Sjkh#ifdef USE_UTIMES 5972311Sjkh struct timeval tvs[2]; 5982311Sjkh struct timezone tz; 5992311Sjkh 6002311Sjkh (void) gettimeofday(&tvs[0], &tz); 6012311Sjkh tvs[1] = tvs[0]; 6022311Sjkh if (utimes(SPOOL_DIR, tvs) < OK) { 60329452Scharnier warn("can't update mtime on spooldir %s", SPOOL_DIR); 6042311Sjkh return; 6052311Sjkh } 6062311Sjkh#else 6072311Sjkh if (utime(SPOOL_DIR, NULL) < OK) { 60829452Scharnier warn("can't update mtime on spooldir %s", SPOOL_DIR); 6092311Sjkh return; 6102311Sjkh } 6112311Sjkh#endif /*USE_UTIMES*/ 6122311Sjkh} 613