1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27*0Sstevel@tonic-gate /* All Rights Reserved */ 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/types.h> 33*0Sstevel@tonic-gate #include <sys/stat.h> 34*0Sstevel@tonic-gate #include <sys/types.h> 35*0Sstevel@tonic-gate #include <sys/wait.h> 36*0Sstevel@tonic-gate #include <errno.h> 37*0Sstevel@tonic-gate #include <signal.h> 38*0Sstevel@tonic-gate #include <stdio.h> 39*0Sstevel@tonic-gate #include <stdlib.h> 40*0Sstevel@tonic-gate #include <string.h> 41*0Sstevel@tonic-gate #include <fcntl.h> 42*0Sstevel@tonic-gate #include <ctype.h> 43*0Sstevel@tonic-gate #include <pwd.h> 44*0Sstevel@tonic-gate #include <unistd.h> 45*0Sstevel@tonic-gate #include <locale.h> 46*0Sstevel@tonic-gate #include <nl_types.h> 47*0Sstevel@tonic-gate #include <langinfo.h> 48*0Sstevel@tonic-gate #include <libintl.h> 49*0Sstevel@tonic-gate #include <security/pam_appl.h> 50*0Sstevel@tonic-gate #include "cron.h" 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #define TMPFILE "_cron" /* prefix for tmp file */ 53*0Sstevel@tonic-gate #define CRMODE 0600 /* mode for creating crontabs */ 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate #define BADCREATE \ 56*0Sstevel@tonic-gate "can't create your crontab file in the crontab directory." 57*0Sstevel@tonic-gate #define BADOPEN "can't open your crontab file." 58*0Sstevel@tonic-gate #define BADSHELL \ 59*0Sstevel@tonic-gate "because your login shell isn't /usr/bin/sh, you can't use cron." 60*0Sstevel@tonic-gate #define WARNSHELL "warning: commands will be executed using /usr/bin/sh\n" 61*0Sstevel@tonic-gate #define BADUSAGE \ 62*0Sstevel@tonic-gate "proper usage is: \n crontab [file | -e | -l | -r ] [user]" 63*0Sstevel@tonic-gate #define INVALIDUSER "you are not a valid user (no entry in /etc/passwd)." 64*0Sstevel@tonic-gate #define NOTALLOWED "you are not authorized to use cron. Sorry." 65*0Sstevel@tonic-gate #define NOTROOT \ 66*0Sstevel@tonic-gate "you must be super-user to access another user's crontab file" 67*0Sstevel@tonic-gate #define AUDITREJECT "The audit context for your shell has not been set." 68*0Sstevel@tonic-gate #define EOLN "unexpected end of line." 69*0Sstevel@tonic-gate #define UNEXPECT "unexpected character found in line." 70*0Sstevel@tonic-gate #define OUTOFBOUND "number out of bounds." 71*0Sstevel@tonic-gate #define ERRSFND "errors detected in input, no crontab file generated." 72*0Sstevel@tonic-gate #define ED_ERROR \ 73*0Sstevel@tonic-gate " The editor indicates that an error occurred while you were\n"\ 74*0Sstevel@tonic-gate " editing the crontab data - usually a minor typing error.\n\n" 75*0Sstevel@tonic-gate #define BADREAD "error reading your crontab file" 76*0Sstevel@tonic-gate #define ED_PROMPT \ 77*0Sstevel@tonic-gate " Edit again, to ensure crontab information is intact (%c/%c)?\n"\ 78*0Sstevel@tonic-gate " ('%c' will discard edits.)" 79*0Sstevel@tonic-gate #define NAMETOOLONG "login name too long" 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate extern int per_errno; 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate extern int audit_crontab_modify(char *, char *, int); 84*0Sstevel@tonic-gate extern int audit_crontab_delete(char *, int); 85*0Sstevel@tonic-gate extern int audit_crontab_not_allowed(uid_t, char *); 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate int err; 88*0Sstevel@tonic-gate int cursor; 89*0Sstevel@tonic-gate char *cf; 90*0Sstevel@tonic-gate char *tnam; 91*0Sstevel@tonic-gate char edtemp[5+13+1]; 92*0Sstevel@tonic-gate char line[CTLINESIZE]; 93*0Sstevel@tonic-gate static char login[UNAMESIZE]; 94*0Sstevel@tonic-gate static char yeschr; 95*0Sstevel@tonic-gate static char nochr; 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate static int yes(void); 98*0Sstevel@tonic-gate static int next_field(int, int); 99*0Sstevel@tonic-gate static void catch(int); 100*0Sstevel@tonic-gate static void crabort(char *); 101*0Sstevel@tonic-gate static void cerror(char *); 102*0Sstevel@tonic-gate static void copycron(FILE *); 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate main(argc, argv) 105*0Sstevel@tonic-gate int argc; 106*0Sstevel@tonic-gate char **argv; 107*0Sstevel@tonic-gate { 108*0Sstevel@tonic-gate int c, r; 109*0Sstevel@tonic-gate int rflag = 0; 110*0Sstevel@tonic-gate int lflag = 0; 111*0Sstevel@tonic-gate int eflag = 0; 112*0Sstevel@tonic-gate int errflg = 0; 113*0Sstevel@tonic-gate char *pp; 114*0Sstevel@tonic-gate FILE *fp, *tmpfp; 115*0Sstevel@tonic-gate struct stat stbuf; 116*0Sstevel@tonic-gate struct passwd *pwp; 117*0Sstevel@tonic-gate time_t omodtime; 118*0Sstevel@tonic-gate char *editor; 119*0Sstevel@tonic-gate char buf[BUFSIZ]; 120*0Sstevel@tonic-gate uid_t ruid; 121*0Sstevel@tonic-gate pid_t pid; 122*0Sstevel@tonic-gate int stat_loc; 123*0Sstevel@tonic-gate int ret; 124*0Sstevel@tonic-gate char real_login[UNAMESIZE]; 125*0Sstevel@tonic-gate int tmpfd = -1; 126*0Sstevel@tonic-gate pam_handle_t *pamh; 127*0Sstevel@tonic-gate int pam_error; 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate (void) setlocale(LC_ALL, ""); 130*0Sstevel@tonic-gate #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 131*0Sstevel@tonic-gate #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 132*0Sstevel@tonic-gate #endif 133*0Sstevel@tonic-gate (void) textdomain(TEXT_DOMAIN); 134*0Sstevel@tonic-gate yeschr = *nl_langinfo(YESSTR); 135*0Sstevel@tonic-gate nochr = *nl_langinfo(NOSTR); 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate while ((c = getopt(argc, argv, "elr")) != EOF) 138*0Sstevel@tonic-gate switch (c) { 139*0Sstevel@tonic-gate case 'e': 140*0Sstevel@tonic-gate eflag++; 141*0Sstevel@tonic-gate break; 142*0Sstevel@tonic-gate case 'l': 143*0Sstevel@tonic-gate lflag++; 144*0Sstevel@tonic-gate break; 145*0Sstevel@tonic-gate case 'r': 146*0Sstevel@tonic-gate rflag++; 147*0Sstevel@tonic-gate break; 148*0Sstevel@tonic-gate case '?': 149*0Sstevel@tonic-gate errflg++; 150*0Sstevel@tonic-gate break; 151*0Sstevel@tonic-gate } 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate if (eflag + lflag + rflag > 1) 154*0Sstevel@tonic-gate errflg++; 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate argc -= optind; 157*0Sstevel@tonic-gate argv += optind; 158*0Sstevel@tonic-gate if (errflg || argc > 1) 159*0Sstevel@tonic-gate crabort(BADUSAGE); 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate ruid = getuid(); 162*0Sstevel@tonic-gate if ((pwp = getpwuid(ruid)) == NULL) 163*0Sstevel@tonic-gate crabort(INVALIDUSER); 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate if (strlcpy(real_login, pwp->pw_name, sizeof (real_login)) 166*0Sstevel@tonic-gate >= sizeof (real_login)) 167*0Sstevel@tonic-gate crabort(NAMETOOLONG); 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate if ((eflag || lflag || rflag) && argc == 1) { 170*0Sstevel@tonic-gate if ((pwp = getpwnam(*argv)) == NULL) 171*0Sstevel@tonic-gate crabort(INVALIDUSER); 172*0Sstevel@tonic-gate 173*0Sstevel@tonic-gate if (!chkauthattr(CRONADMIN_AUTH, real_login)) { 174*0Sstevel@tonic-gate if (pwp->pw_uid != ruid) 175*0Sstevel@tonic-gate crabort(NOTROOT); 176*0Sstevel@tonic-gate else 177*0Sstevel@tonic-gate pp = getuser(ruid); 178*0Sstevel@tonic-gate } else 179*0Sstevel@tonic-gate pp = *argv++; 180*0Sstevel@tonic-gate } else { 181*0Sstevel@tonic-gate pp = getuser(ruid); 182*0Sstevel@tonic-gate } 183*0Sstevel@tonic-gate 184*0Sstevel@tonic-gate if (pp == NULL) { 185*0Sstevel@tonic-gate if (per_errno == 2) 186*0Sstevel@tonic-gate crabort(BADSHELL); 187*0Sstevel@tonic-gate else 188*0Sstevel@tonic-gate crabort(INVALIDUSER); 189*0Sstevel@tonic-gate } 190*0Sstevel@tonic-gate if (strlcpy(login, pp, sizeof (login)) >= sizeof (login)) 191*0Sstevel@tonic-gate crabort(NAMETOOLONG); 192*0Sstevel@tonic-gate if (!allowed(login, CRONALLOW, CRONDENY)) 193*0Sstevel@tonic-gate crabort(NOTALLOWED); 194*0Sstevel@tonic-gate 195*0Sstevel@tonic-gate /* Do account validation check */ 196*0Sstevel@tonic-gate pam_error = pam_start("cron", pp, NULL, &pamh); 197*0Sstevel@tonic-gate if (pam_error != PAM_SUCCESS) { 198*0Sstevel@tonic-gate crabort((char *)pam_strerror(pamh, pam_error)); 199*0Sstevel@tonic-gate } 200*0Sstevel@tonic-gate pam_error = pam_acct_mgmt(pamh, PAM_SILENT); 201*0Sstevel@tonic-gate if (pam_error != PAM_SUCCESS) { 202*0Sstevel@tonic-gate (void) fprintf(stderr, gettext("Warning - Invalid account: " 203*0Sstevel@tonic-gate "'%s' not allowed to execute cronjobs\n"), pp); 204*0Sstevel@tonic-gate } 205*0Sstevel@tonic-gate (void) pam_end(pamh, PAM_SUCCESS); 206*0Sstevel@tonic-gate 207*0Sstevel@tonic-gate 208*0Sstevel@tonic-gate /* check for unaudited shell */ 209*0Sstevel@tonic-gate if (audit_crontab_not_allowed(ruid, pp)) 210*0Sstevel@tonic-gate crabort(AUDITREJECT); 211*0Sstevel@tonic-gate 212*0Sstevel@tonic-gate cf = xmalloc(strlen(CRONDIR)+strlen(login)+2); 213*0Sstevel@tonic-gate strcat(strcat(strcpy(cf, CRONDIR), "/"), login); 214*0Sstevel@tonic-gate 215*0Sstevel@tonic-gate if (rflag) { 216*0Sstevel@tonic-gate r = unlink(cf); 217*0Sstevel@tonic-gate cron_sendmsg(DELETE, login, login, CRON); 218*0Sstevel@tonic-gate audit_crontab_delete(cf, r); 219*0Sstevel@tonic-gate exit(0); 220*0Sstevel@tonic-gate } 221*0Sstevel@tonic-gate if (lflag) { 222*0Sstevel@tonic-gate if ((fp = fopen(cf, "r")) == NULL) 223*0Sstevel@tonic-gate crabort(BADOPEN); 224*0Sstevel@tonic-gate while (fgets(line, CTLINESIZE, fp) != NULL) 225*0Sstevel@tonic-gate fputs(line, stdout); 226*0Sstevel@tonic-gate fclose(fp); 227*0Sstevel@tonic-gate exit(0); 228*0Sstevel@tonic-gate } 229*0Sstevel@tonic-gate if (eflag) { 230*0Sstevel@tonic-gate if ((fp = fopen(cf, "r")) == NULL) { 231*0Sstevel@tonic-gate if (errno != ENOENT) 232*0Sstevel@tonic-gate crabort(BADOPEN); 233*0Sstevel@tonic-gate } 234*0Sstevel@tonic-gate (void) strcpy(edtemp, "/tmp/crontabXXXXXX"); 235*0Sstevel@tonic-gate tmpfd = mkstemp(edtemp); 236*0Sstevel@tonic-gate if (fchown(tmpfd, ruid, -1) == -1) { 237*0Sstevel@tonic-gate (void) close(tmpfd); 238*0Sstevel@tonic-gate crabort("fchown of temporary file failed"); 239*0Sstevel@tonic-gate } 240*0Sstevel@tonic-gate (void) close(tmpfd); 241*0Sstevel@tonic-gate /* 242*0Sstevel@tonic-gate * Fork off a child with user's permissions, 243*0Sstevel@tonic-gate * to edit the crontab file 244*0Sstevel@tonic-gate */ 245*0Sstevel@tonic-gate if ((pid = fork()) == (pid_t)-1) 246*0Sstevel@tonic-gate crabort("fork failed"); 247*0Sstevel@tonic-gate if (pid == 0) { /* child process */ 248*0Sstevel@tonic-gate /* give up super-user privileges. */ 249*0Sstevel@tonic-gate setuid(ruid); 250*0Sstevel@tonic-gate if ((tmpfp = fopen(edtemp, "w")) == NULL) 251*0Sstevel@tonic-gate crabort("can't create temporary file"); 252*0Sstevel@tonic-gate if (fp != NULL) { 253*0Sstevel@tonic-gate /* 254*0Sstevel@tonic-gate * Copy user's crontab file to temporary file. 255*0Sstevel@tonic-gate */ 256*0Sstevel@tonic-gate while (fgets(line, CTLINESIZE, fp) != NULL) { 257*0Sstevel@tonic-gate fputs(line, tmpfp); 258*0Sstevel@tonic-gate if (ferror(tmpfp)) { 259*0Sstevel@tonic-gate fclose(fp); 260*0Sstevel@tonic-gate fclose(tmpfp); 261*0Sstevel@tonic-gate crabort("write error on" 262*0Sstevel@tonic-gate "temporary file"); 263*0Sstevel@tonic-gate } 264*0Sstevel@tonic-gate } 265*0Sstevel@tonic-gate if (ferror(fp)) { 266*0Sstevel@tonic-gate fclose(fp); 267*0Sstevel@tonic-gate fclose(tmpfp); 268*0Sstevel@tonic-gate crabort(BADREAD); 269*0Sstevel@tonic-gate } 270*0Sstevel@tonic-gate fclose(fp); 271*0Sstevel@tonic-gate } 272*0Sstevel@tonic-gate if (fclose(tmpfp) == EOF) 273*0Sstevel@tonic-gate crabort("write error on temporary file"); 274*0Sstevel@tonic-gate if (stat(edtemp, &stbuf) < 0) 275*0Sstevel@tonic-gate crabort("can't stat temporary file"); 276*0Sstevel@tonic-gate omodtime = stbuf.st_mtime; 277*0Sstevel@tonic-gate editor = getenv("VISUAL"); 278*0Sstevel@tonic-gate if (editor == NULL) 279*0Sstevel@tonic-gate editor = getenv("EDITOR"); 280*0Sstevel@tonic-gate if (editor == NULL) 281*0Sstevel@tonic-gate editor = "ed"; 282*0Sstevel@tonic-gate (void) snprintf(buf, sizeof (buf), 283*0Sstevel@tonic-gate "%s %s", editor, edtemp); 284*0Sstevel@tonic-gate sleep(1); 285*0Sstevel@tonic-gate 286*0Sstevel@tonic-gate while (1) { 287*0Sstevel@tonic-gate ret = system(buf); 288*0Sstevel@tonic-gate /* sanity checks */ 289*0Sstevel@tonic-gate if ((tmpfp = fopen(edtemp, "r")) == NULL) 290*0Sstevel@tonic-gate crabort("can't open temporary file"); 291*0Sstevel@tonic-gate if (fstat(fileno(tmpfp), &stbuf) < 0) 292*0Sstevel@tonic-gate crabort("can't stat temporary file"); 293*0Sstevel@tonic-gate if (stbuf.st_size == 0) 294*0Sstevel@tonic-gate crabort("temporary file empty"); 295*0Sstevel@tonic-gate if (omodtime == stbuf.st_mtime) { 296*0Sstevel@tonic-gate (void) unlink(edtemp); 297*0Sstevel@tonic-gate fprintf(stderr, gettext( 298*0Sstevel@tonic-gate "The crontab file was not changed.\n")); 299*0Sstevel@tonic-gate exit(1); 300*0Sstevel@tonic-gate } 301*0Sstevel@tonic-gate if ((ret) && (errno != EINTR)) { 302*0Sstevel@tonic-gate /* 303*0Sstevel@tonic-gate * Some editors (like 'vi') can return 304*0Sstevel@tonic-gate * a non-zero exit status even though 305*0Sstevel@tonic-gate * everything is okay. Need to check. 306*0Sstevel@tonic-gate */ 307*0Sstevel@tonic-gate fprintf(stderr, gettext(ED_ERROR)); 308*0Sstevel@tonic-gate fflush(stderr); 309*0Sstevel@tonic-gate if (isatty(fileno(stdin))) { 310*0Sstevel@tonic-gate /* Interactive */ 311*0Sstevel@tonic-gate fprintf(stdout, gettext(ED_PROMPT), 312*0Sstevel@tonic-gate yeschr, nochr, nochr); 313*0Sstevel@tonic-gate fflush(stdout); 314*0Sstevel@tonic-gate 315*0Sstevel@tonic-gate if (yes()) { 316*0Sstevel@tonic-gate /* Edit again */ 317*0Sstevel@tonic-gate continue; 318*0Sstevel@tonic-gate } else { 319*0Sstevel@tonic-gate /* Dump changes */ 320*0Sstevel@tonic-gate (void) unlink(edtemp); 321*0Sstevel@tonic-gate exit(1); 322*0Sstevel@tonic-gate } 323*0Sstevel@tonic-gate } else { 324*0Sstevel@tonic-gate /* Non-interactive, dump changes */ 325*0Sstevel@tonic-gate (void) unlink(edtemp); 326*0Sstevel@tonic-gate exit(1); 327*0Sstevel@tonic-gate } 328*0Sstevel@tonic-gate } 329*0Sstevel@tonic-gate exit(0); 330*0Sstevel@tonic-gate } /* while (1) */ 331*0Sstevel@tonic-gate } 332*0Sstevel@tonic-gate 333*0Sstevel@tonic-gate /* fix for 1125555 - ignore common signals while waiting */ 334*0Sstevel@tonic-gate (void) signal(SIGINT, SIG_IGN); 335*0Sstevel@tonic-gate (void) signal(SIGHUP, SIG_IGN); 336*0Sstevel@tonic-gate (void) signal(SIGQUIT, SIG_IGN); 337*0Sstevel@tonic-gate (void) signal(SIGTERM, SIG_IGN); 338*0Sstevel@tonic-gate wait(&stat_loc); 339*0Sstevel@tonic-gate if ((stat_loc & 0xFF00) != 0) 340*0Sstevel@tonic-gate exit(1); 341*0Sstevel@tonic-gate 342*0Sstevel@tonic-gate if ((seteuid(ruid) < 0) || 343*0Sstevel@tonic-gate ((tmpfp = fopen(edtemp, "r")) == NULL)) { 344*0Sstevel@tonic-gate fprintf(stderr, "crontab: %s: %s\n", 345*0Sstevel@tonic-gate edtemp, errmsg(errno)); 346*0Sstevel@tonic-gate (void) unlink(edtemp); 347*0Sstevel@tonic-gate exit(1); 348*0Sstevel@tonic-gate } else 349*0Sstevel@tonic-gate seteuid(0); 350*0Sstevel@tonic-gate 351*0Sstevel@tonic-gate copycron(tmpfp); 352*0Sstevel@tonic-gate (void) unlink(edtemp); 353*0Sstevel@tonic-gate } else { 354*0Sstevel@tonic-gate if (argc == 0) 355*0Sstevel@tonic-gate copycron(stdin); 356*0Sstevel@tonic-gate else if (seteuid(getuid()) != 0 || (fp = fopen(argv[0], "r")) 357*0Sstevel@tonic-gate == NULL) 358*0Sstevel@tonic-gate crabort(BADOPEN); 359*0Sstevel@tonic-gate else { 360*0Sstevel@tonic-gate seteuid(0); 361*0Sstevel@tonic-gate copycron(fp); 362*0Sstevel@tonic-gate } 363*0Sstevel@tonic-gate } 364*0Sstevel@tonic-gate cron_sendmsg(ADD, login, login, CRON); 365*0Sstevel@tonic-gate /* 366*0Sstevel@tonic-gate * if (per_errno == 2) 367*0Sstevel@tonic-gate * fprintf(stderr, gettext(WARNSHELL)); 368*0Sstevel@tonic-gate */ 369*0Sstevel@tonic-gate return (0); 370*0Sstevel@tonic-gate } 371*0Sstevel@tonic-gate 372*0Sstevel@tonic-gate static void 373*0Sstevel@tonic-gate copycron(fp) 374*0Sstevel@tonic-gate FILE *fp; 375*0Sstevel@tonic-gate { 376*0Sstevel@tonic-gate FILE *tfp; 377*0Sstevel@tonic-gate char pid[6], *tnam_end; 378*0Sstevel@tonic-gate int t; 379*0Sstevel@tonic-gate 380*0Sstevel@tonic-gate sprintf(pid, "%-5d", getpid()); 381*0Sstevel@tonic-gate tnam = xmalloc(strlen(CRONDIR)+strlen(TMPFILE)+7); 382*0Sstevel@tonic-gate strcat(strcat(strcat(strcpy(tnam, CRONDIR), "/"), TMPFILE), pid); 383*0Sstevel@tonic-gate /* cut trailing blanks */ 384*0Sstevel@tonic-gate tnam_end = strchr(tnam, ' '); 385*0Sstevel@tonic-gate if (tnam_end != NULL) 386*0Sstevel@tonic-gate *tnam_end = 0; 387*0Sstevel@tonic-gate /* catch SIGINT, SIGHUP, SIGQUIT signals */ 388*0Sstevel@tonic-gate if (signal(SIGINT, catch) == SIG_IGN) 389*0Sstevel@tonic-gate signal(SIGINT, SIG_IGN); 390*0Sstevel@tonic-gate if (signal(SIGHUP, catch) == SIG_IGN) signal(SIGHUP, SIG_IGN); 391*0Sstevel@tonic-gate if (signal(SIGQUIT, catch) == SIG_IGN) signal(SIGQUIT, SIG_IGN); 392*0Sstevel@tonic-gate if (signal(SIGTERM, catch) == SIG_IGN) signal(SIGTERM, SIG_IGN); 393*0Sstevel@tonic-gate if ((t = creat(tnam, CRMODE)) == -1) crabort(BADCREATE); 394*0Sstevel@tonic-gate if ((tfp = fdopen(t, "w")) == NULL) { 395*0Sstevel@tonic-gate unlink(tnam); 396*0Sstevel@tonic-gate crabort(BADCREATE); 397*0Sstevel@tonic-gate } 398*0Sstevel@tonic-gate err = 0; /* if errors found, err set to 1 */ 399*0Sstevel@tonic-gate while (fgets(line, CTLINESIZE, fp) != NULL) { 400*0Sstevel@tonic-gate cursor = 0; 401*0Sstevel@tonic-gate while (line[cursor] == ' ' || line[cursor] == '\t') 402*0Sstevel@tonic-gate cursor++; 403*0Sstevel@tonic-gate /* fix for 1039689 - treat blank line like a comment */ 404*0Sstevel@tonic-gate if (line[cursor] == '#' || line[cursor] == '\n') 405*0Sstevel@tonic-gate goto cont; 406*0Sstevel@tonic-gate if (next_field(0, 59)) continue; 407*0Sstevel@tonic-gate if (next_field(0, 23)) continue; 408*0Sstevel@tonic-gate if (next_field(1, 31)) continue; 409*0Sstevel@tonic-gate if (next_field(1, 12)) continue; 410*0Sstevel@tonic-gate if (next_field(0, 06)) continue; 411*0Sstevel@tonic-gate if (line[++cursor] == '\0') { 412*0Sstevel@tonic-gate cerror(EOLN); 413*0Sstevel@tonic-gate continue; 414*0Sstevel@tonic-gate } 415*0Sstevel@tonic-gate cont: 416*0Sstevel@tonic-gate if (fputs(line, tfp) == EOF) { 417*0Sstevel@tonic-gate unlink(tnam); 418*0Sstevel@tonic-gate crabort(BADCREATE); 419*0Sstevel@tonic-gate } 420*0Sstevel@tonic-gate } 421*0Sstevel@tonic-gate fclose(fp); 422*0Sstevel@tonic-gate fclose(tfp); 423*0Sstevel@tonic-gate 424*0Sstevel@tonic-gate /* audit differences between old and new crontabs */ 425*0Sstevel@tonic-gate audit_crontab_modify(cf, tnam, err); 426*0Sstevel@tonic-gate 427*0Sstevel@tonic-gate if (!err) { 428*0Sstevel@tonic-gate /* make file tfp the new crontab */ 429*0Sstevel@tonic-gate unlink(cf); 430*0Sstevel@tonic-gate if (link(tnam, cf) == -1) { 431*0Sstevel@tonic-gate unlink(tnam); 432*0Sstevel@tonic-gate crabort(BADCREATE); 433*0Sstevel@tonic-gate } 434*0Sstevel@tonic-gate } else 435*0Sstevel@tonic-gate fprintf(stderr, "crontab: %s\n", gettext(ERRSFND)); 436*0Sstevel@tonic-gate unlink(tnam); 437*0Sstevel@tonic-gate } 438*0Sstevel@tonic-gate 439*0Sstevel@tonic-gate static int 440*0Sstevel@tonic-gate next_field(lower, upper) 441*0Sstevel@tonic-gate int lower, upper; 442*0Sstevel@tonic-gate { 443*0Sstevel@tonic-gate int num, num2; 444*0Sstevel@tonic-gate 445*0Sstevel@tonic-gate while ((line[cursor] == ' ') || (line[cursor] == '\t')) cursor++; 446*0Sstevel@tonic-gate if (line[cursor] == '\0') { 447*0Sstevel@tonic-gate cerror(EOLN); 448*0Sstevel@tonic-gate return (1); 449*0Sstevel@tonic-gate } 450*0Sstevel@tonic-gate if (line[cursor] == '*') { 451*0Sstevel@tonic-gate cursor++; 452*0Sstevel@tonic-gate if ((line[cursor] != ' ') && (line[cursor] != '\t')) { 453*0Sstevel@tonic-gate cerror(UNEXPECT); 454*0Sstevel@tonic-gate return (1); 455*0Sstevel@tonic-gate } 456*0Sstevel@tonic-gate return (0); 457*0Sstevel@tonic-gate } 458*0Sstevel@tonic-gate while (TRUE) { 459*0Sstevel@tonic-gate if (!isdigit(line[cursor])) { 460*0Sstevel@tonic-gate cerror(UNEXPECT); 461*0Sstevel@tonic-gate return (1); 462*0Sstevel@tonic-gate } 463*0Sstevel@tonic-gate num = 0; 464*0Sstevel@tonic-gate do { 465*0Sstevel@tonic-gate num = num*10 + (line[cursor]-'0'); 466*0Sstevel@tonic-gate } while (isdigit(line[++cursor])); 467*0Sstevel@tonic-gate if ((num < lower) || (num > upper)) { 468*0Sstevel@tonic-gate cerror(OUTOFBOUND); 469*0Sstevel@tonic-gate return (1); 470*0Sstevel@tonic-gate } 471*0Sstevel@tonic-gate if (line[cursor] == '-') { 472*0Sstevel@tonic-gate if (!isdigit(line[++cursor])) { 473*0Sstevel@tonic-gate cerror(UNEXPECT); 474*0Sstevel@tonic-gate return (1); 475*0Sstevel@tonic-gate } 476*0Sstevel@tonic-gate num2 = 0; 477*0Sstevel@tonic-gate do { 478*0Sstevel@tonic-gate num2 = num2*10 + (line[cursor]-'0'); 479*0Sstevel@tonic-gate } while (isdigit(line[++cursor])); 480*0Sstevel@tonic-gate if ((num2 < lower) || (num2 > upper)) { 481*0Sstevel@tonic-gate cerror(OUTOFBOUND); 482*0Sstevel@tonic-gate return (1); 483*0Sstevel@tonic-gate } 484*0Sstevel@tonic-gate } 485*0Sstevel@tonic-gate if ((line[cursor] == ' ') || (line[cursor] == '\t')) break; 486*0Sstevel@tonic-gate if (line[cursor] == '\0') { 487*0Sstevel@tonic-gate cerror(EOLN); 488*0Sstevel@tonic-gate return (1); 489*0Sstevel@tonic-gate } 490*0Sstevel@tonic-gate if (line[cursor++] != ',') { 491*0Sstevel@tonic-gate cerror(UNEXPECT); 492*0Sstevel@tonic-gate return (1); 493*0Sstevel@tonic-gate } 494*0Sstevel@tonic-gate } 495*0Sstevel@tonic-gate return (0); 496*0Sstevel@tonic-gate } 497*0Sstevel@tonic-gate 498*0Sstevel@tonic-gate static void 499*0Sstevel@tonic-gate cerror(msg) 500*0Sstevel@tonic-gate char *msg; 501*0Sstevel@tonic-gate { 502*0Sstevel@tonic-gate fprintf(stderr, gettext("%scrontab: error on previous line; %s\n"), 503*0Sstevel@tonic-gate line, msg); 504*0Sstevel@tonic-gate err = 1; 505*0Sstevel@tonic-gate } 506*0Sstevel@tonic-gate 507*0Sstevel@tonic-gate 508*0Sstevel@tonic-gate static void 509*0Sstevel@tonic-gate catch(int x) 510*0Sstevel@tonic-gate { 511*0Sstevel@tonic-gate unlink(tnam); 512*0Sstevel@tonic-gate exit(1); 513*0Sstevel@tonic-gate } 514*0Sstevel@tonic-gate 515*0Sstevel@tonic-gate static void 516*0Sstevel@tonic-gate crabort(msg) 517*0Sstevel@tonic-gate char *msg; 518*0Sstevel@tonic-gate { 519*0Sstevel@tonic-gate int sverrno; 520*0Sstevel@tonic-gate 521*0Sstevel@tonic-gate if (strcmp(edtemp, "") != 0) { 522*0Sstevel@tonic-gate sverrno = errno; 523*0Sstevel@tonic-gate (void) unlink(edtemp); 524*0Sstevel@tonic-gate errno = sverrno; 525*0Sstevel@tonic-gate } 526*0Sstevel@tonic-gate if (tnam != NULL) { 527*0Sstevel@tonic-gate sverrno = errno; 528*0Sstevel@tonic-gate (void) unlink(tnam); 529*0Sstevel@tonic-gate errno = sverrno; 530*0Sstevel@tonic-gate } 531*0Sstevel@tonic-gate fprintf(stderr, "crontab: %s\n", gettext(msg)); 532*0Sstevel@tonic-gate exit(1); 533*0Sstevel@tonic-gate } 534*0Sstevel@tonic-gate 535*0Sstevel@tonic-gate static int 536*0Sstevel@tonic-gate yes(void) 537*0Sstevel@tonic-gate { 538*0Sstevel@tonic-gate int first_char; 539*0Sstevel@tonic-gate int dummy_char; 540*0Sstevel@tonic-gate 541*0Sstevel@tonic-gate first_char = dummy_char = getchar(); 542*0Sstevel@tonic-gate while ((dummy_char != '\n') && 543*0Sstevel@tonic-gate (dummy_char != '\0') && 544*0Sstevel@tonic-gate (dummy_char != EOF)) 545*0Sstevel@tonic-gate dummy_char = getchar(); 546*0Sstevel@tonic-gate return (first_char == yeschr); 547*0Sstevel@tonic-gate } 548