login.c revision 1.30
1 /* $NetBSD: login.c,v 1.30 1997/10/12 15:11:24 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT( 39 "@(#) Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"); 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)login.c 8.4 (Berkeley) 4/2/94"; 46 #endif 47 __RCSID("$NetBSD: login.c,v 1.30 1997/10/12 15:11:24 mycroft Exp $"); 48 #endif /* not lint */ 49 50 /* 51 * login [ name ] 52 * login -h hostname (for telnetd, etc.) 53 * login -f name (for pre-authenticated login: datakit, xterm, etc.) 54 */ 55 56 #include <sys/param.h> 57 #include <sys/stat.h> 58 #include <sys/time.h> 59 #include <sys/resource.h> 60 #include <sys/file.h> 61 62 #include <err.h> 63 #include <errno.h> 64 #include <grp.h> 65 #include <pwd.h> 66 #include <setjmp.h> 67 #include <signal.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <syslog.h> 72 #include <ttyent.h> 73 #include <tzfile.h> 74 #include <unistd.h> 75 #include <utmp.h> 76 #include <util.h> 77 #ifdef SKEY 78 #include <skey.h> 79 #endif 80 #ifdef KERBEROS5 81 #include <krb5.h> 82 #endif 83 84 #include "pathnames.h" 85 86 void badlogin __P((char *)); 87 void checknologin __P((void)); 88 void dolastlog __P((int)); 89 void getloginname __P((void)); 90 int main __P((int, char *[])); 91 void motd __P((void)); 92 int rootterm __P((char *)); 93 void sigint __P((int)); 94 void sleepexit __P((int)); 95 char *stypeof __P((char *)); 96 void timedout __P((int)); 97 #if defined(KERBEROS) || defined(KERBEROS5) 98 int klogin __P((struct passwd *, char *, char *, char *)); 99 void kdestroy __P((void)); 100 void dofork __P((void)); 101 #endif 102 103 extern void login __P((struct utmp *)); 104 105 #define TTYGRPNAME "tty" /* name of group to own ttys */ 106 107 /* 108 * This bounds the time given to login. Not a define so it can 109 * be patched on machines where it's too small. 110 */ 111 u_int timeout = 300; 112 113 #if defined(KERBEROS) || defined(KERBEROS5) 114 int notickets = 1; 115 char *instance; 116 char *krbtkfile_env; 117 #endif 118 #ifdef KERBEROS5 119 extern krb5_context kcontext; 120 #endif 121 122 struct passwd *pwd; 123 int failures; 124 char term[64], *envinit[1], *hostname, *username, *tty; 125 126 int 127 main(argc, argv) 128 int argc; 129 char *argv[]; 130 { 131 extern char **environ; 132 struct group *gr; 133 struct stat st; 134 struct timeval tp; 135 struct utmp utmp; 136 int ask, ch, cnt, fflag, hflag, pflag, sflag, quietlog, rootlogin, rval; 137 uid_t uid; 138 char *domain, *p, *salt, *ttyn, *pwprompt; 139 char tbuf[MAXPATHLEN + 2], tname[sizeof(_PATH_TTY) + 10]; 140 char localhost[MAXHOSTNAMELEN]; 141 int need_chpass, require_chpass; 142 #ifdef KERBEROS5 143 krb5_error_code kerror; 144 #endif 145 146 tbuf[0] = '\0'; 147 rval = 0; 148 pwprompt = NULL; 149 need_chpass = require_chpass = 0; 150 151 (void)signal(SIGALRM, timedout); 152 (void)alarm(timeout); 153 (void)signal(SIGQUIT, SIG_IGN); 154 (void)signal(SIGINT, SIG_IGN); 155 (void)setpriority(PRIO_PROCESS, 0, 0); 156 157 openlog("login", LOG_ODELAY, LOG_AUTH); 158 159 /* 160 * -p is used by getty to tell login not to destroy the environment 161 * -f is used to skip a second login authentication 162 * -h is used by other servers to pass the name of the remote 163 * host to login so that it may be placed in utmp and wtmp 164 * -s is used to force use of S/Key or equivalent. 165 */ 166 domain = NULL; 167 if (gethostname(localhost, sizeof(localhost)) < 0) 168 syslog(LOG_ERR, "couldn't get local hostname: %m"); 169 else 170 domain = strchr(localhost, '.'); 171 172 fflag = hflag = pflag = sflag = 0; 173 uid = getuid(); 174 while ((ch = getopt(argc, argv, "fh:ps")) != -1) 175 switch (ch) { 176 case 'f': 177 fflag = 1; 178 break; 179 case 'h': 180 if (uid) 181 errx(1, "-h option: %s", strerror(EPERM)); 182 hflag = 1; 183 if (domain && (p = strchr(optarg, '.')) != NULL && 184 strcasecmp(p, domain) == 0) 185 *p = 0; 186 hostname = optarg; 187 break; 188 case 'p': 189 pflag = 1; 190 break; 191 case 's': 192 sflag = 1; 193 break; 194 default: 195 case '?': 196 (void)fprintf(stderr, 197 "usage: login [-fps] [-h hostname] [username]\n"); 198 exit(1); 199 } 200 argc -= optind; 201 argv += optind; 202 203 if (*argv) { 204 username = *argv; 205 ask = 0; 206 } else 207 ask = 1; 208 209 for (cnt = getdtablesize(); cnt > 2; cnt--) 210 (void)close(cnt); 211 212 ttyn = ttyname(STDIN_FILENO); 213 if (ttyn == NULL || *ttyn == '\0') { 214 (void)snprintf(tname, sizeof(tname), "%s??", _PATH_TTY); 215 ttyn = tname; 216 } 217 if ((tty = strrchr(ttyn, '/')) != NULL) 218 ++tty; 219 else 220 tty = ttyn; 221 222 #ifdef KERBEROS5 223 kerror = krb5_init_context(&kcontext); 224 if (kerror) { 225 syslog(LOG_NOTICE, "%s when initializing Kerberos context", 226 error_message(kerror)); 227 exit(1); 228 } 229 #endif KERBEROS5 230 231 for (cnt = 0;; ask = 1) { 232 #if defined(KERBEROS) || defined(KERBEROS5) 233 kdestroy(); 234 #endif 235 if (ask) { 236 fflag = 0; 237 getloginname(); 238 } 239 rootlogin = 0; 240 #ifdef KERBEROS 241 if ((instance = strchr(username, '.')) != NULL) 242 *instance++ = '\0'; 243 else 244 instance = ""; 245 #endif 246 #ifdef KERBEROS5 247 if ((instance = strchr(username, '/')) != NULL) 248 *instance++ = '\0'; 249 else 250 instance = ""; 251 #endif 252 if (strlen(username) > MAXLOGNAME) 253 username[MAXLOGNAME] = '\0'; 254 255 /* 256 * Note if trying multiple user names; log failures for 257 * previous user name, but don't bother logging one failure 258 * for nonexistent name (mistyped username). 259 */ 260 if (failures && strcmp(tbuf, username)) { 261 if (failures > (pwd ? 0 : 1)) 262 badlogin(tbuf); 263 failures = 0; 264 } 265 (void)strncpy(tbuf, username, sizeof(tbuf) - 1); 266 267 if ((pwd = getpwnam(username)) != NULL) 268 salt = pwd->pw_passwd; 269 else 270 salt = "xx"; 271 272 /* 273 * if we have a valid account name, and it doesn't have a 274 * password, or the -f option was specified and the caller 275 * is root or the caller isn't changing their uid, don't 276 * authenticate. 277 */ 278 if (pwd) { 279 if (pwd->pw_uid == 0) 280 rootlogin = 1; 281 282 if (fflag && (uid == 0 || uid == pwd->pw_uid)) { 283 /* already authenticated */ 284 break; 285 } else if (pwd->pw_passwd[0] == '\0') { 286 /* pretend password okay */ 287 rval = 0; 288 goto ttycheck; 289 } 290 } 291 292 fflag = 0; 293 294 (void)setpriority(PRIO_PROCESS, 0, -4); 295 296 #ifdef SKEY 297 if (skey_haskey(username) == 0) { 298 static char skprompt[80]; 299 char *skinfo = skey_keyinfo(username); 300 301 (void)snprintf(skprompt, sizeof(skprompt)-1, 302 "Password [%s]:", 303 skinfo ? skinfo : "error getting challenge"); 304 pwprompt = skprompt; 305 } else 306 #endif 307 pwprompt = "Password:"; 308 309 p = getpass(pwprompt); 310 311 if (pwd == NULL) { 312 rval = 1; 313 goto skip; 314 } 315 #ifdef KERBEROS 316 if (klogin(pwd, instance, localhost, p) == 0) { 317 rval = 0; 318 goto skip; 319 } 320 #endif 321 #ifdef KERBEROS5 322 if (klogin(pwd, instance, localhost, p) == 0) { 323 rval = 0; 324 goto skip; 325 } 326 #endif 327 #ifdef SKEY 328 if (skey_haskey(username) == 0 && 329 skey_passcheck(username, p) != -1) { 330 rval = 0; 331 goto skip; 332 } 333 #endif 334 if (!sflag && *pwd->pw_passwd != '\0' && 335 !strcmp(crypt(p, pwd->pw_passwd), pwd->pw_passwd)) { 336 rval = 0; 337 require_chpass = 1; 338 goto skip; 339 } 340 rval = 1; 341 342 skip: 343 memset(p, 0, strlen(p)); 344 345 (void)setpriority(PRIO_PROCESS, 0, 0); 346 347 ttycheck: 348 /* 349 * If trying to log in as root without Kerberos, 350 * but with insecure terminal, refuse the login attempt. 351 */ 352 if (pwd && !rval && rootlogin && !rootterm(tty)) { 353 (void)fprintf(stderr, 354 "%s login refused on this terminal.\n", 355 pwd->pw_name); 356 if (hostname) 357 syslog(LOG_NOTICE, 358 "LOGIN %s REFUSED FROM %s ON TTY %s", 359 pwd->pw_name, hostname, tty); 360 else 361 syslog(LOG_NOTICE, 362 "LOGIN %s REFUSED ON TTY %s", 363 pwd->pw_name, tty); 364 continue; 365 } 366 367 if (pwd && !rval) 368 break; 369 370 (void)printf("Login incorrect\n"); 371 failures++; 372 /* we allow 10 tries, but after 3 we start backing off */ 373 if (++cnt > 3) { 374 if (cnt >= 10) { 375 badlogin(username); 376 sleepexit(1); 377 } 378 sleep((u_int)((cnt - 3) * 5)); 379 } 380 } 381 382 /* committed to login -- turn off timeout */ 383 (void)alarm((u_int)0); 384 385 endpwent(); 386 387 /* if user not super-user, check for disabled logins */ 388 if (!rootlogin) 389 checknologin(); 390 391 if (chdir(pwd->pw_dir) < 0) { 392 (void)printf("No home directory %s!\n", pwd->pw_dir); 393 if (chdir("/")) 394 exit(0); 395 pwd->pw_dir = "/"; 396 (void)printf("Logging in with home = \"/\".\n"); 397 } 398 399 quietlog = access(_PATH_HUSHLOGIN, F_OK) == 0; 400 401 if (pwd->pw_change || pwd->pw_expire) 402 (void)gettimeofday(&tp, (struct timezone *)NULL); 403 if (pwd->pw_expire) 404 if (tp.tv_sec >= pwd->pw_expire) { 405 (void)printf("Sorry -- your account has expired.\n"); 406 sleepexit(1); 407 } else if (pwd->pw_expire - tp.tv_sec < 408 _PASSWORD_WARNDAYS * SECSPERDAY && !quietlog) 409 (void)printf("Warning: your account expires on %s", 410 ctime(&pwd->pw_expire)); 411 if (pwd->pw_change) 412 if (pwd->pw_change == _PASSWORD_CHGNOW) 413 need_chpass = 1; 414 else if (tp.tv_sec >= pwd->pw_change) 415 need_chpass = 1; 416 else if (pwd->pw_change - tp.tv_sec < 417 _PASSWORD_WARNDAYS * SECSPERDAY && !quietlog) 418 (void)printf("Warning: your password expires on %s", 419 ctime(&pwd->pw_change)); 420 421 /* Nothing else left to fail -- really log in. */ 422 memset((void *)&utmp, 0, sizeof(utmp)); 423 (void)time(&utmp.ut_time); 424 (void)strncpy(utmp.ut_name, username, sizeof(utmp.ut_name)); 425 if (hostname) 426 (void)strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host)); 427 (void)strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line)); 428 login(&utmp); 429 430 dolastlog(quietlog); 431 432 (void)chown(ttyn, pwd->pw_uid, 433 (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid); 434 435 if (ttyaction(ttyn, "login", pwd->pw_name)) 436 (void)printf("Warning: ttyaction failed.\n"); 437 438 #if defined(KERBEROS) || defined(KERBEROS5) 439 /* Fork so that we can call kdestroy */ 440 if (krbtkfile_env) 441 dofork(); 442 #endif 443 (void)setgid(pwd->pw_gid); 444 445 initgroups(username, pwd->pw_gid); 446 447 if (*pwd->pw_shell == '\0') 448 pwd->pw_shell = _PATH_BSHELL; 449 450 /* Destroy environment unless user has requested its preservation. */ 451 if (!pflag) 452 environ = envinit; 453 (void)setenv("HOME", pwd->pw_dir, 1); 454 (void)setenv("SHELL", pwd->pw_shell, 1); 455 if (term[0] == '\0') 456 (void)strncpy(term, stypeof(tty), sizeof(term)); 457 (void)setenv("TERM", term, 0); 458 (void)setenv("LOGNAME", pwd->pw_name, 1); 459 (void)setenv("USER", pwd->pw_name, 1); 460 (void)setenv("PATH", _PATH_DEFPATH, 0); 461 #ifdef KERBEROS 462 if (krbtkfile_env) 463 (void)setenv("KRBTKFILE", krbtkfile_env, 1); 464 #endif 465 #ifdef KERBEROS5 466 if (krbtkfile_env) 467 (void)setenv("KRB5CCNAME", krbtkfile_env, 1); 468 #endif 469 470 if (tty[sizeof("tty")-1] == 'd') 471 syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name); 472 473 /* If fflag is on, assume caller/authenticator has logged root login. */ 474 if (rootlogin && fflag == 0) 475 if (hostname) 476 syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s FROM %s", 477 username, tty, hostname); 478 else 479 syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s", username, tty); 480 481 #if defined(KERBEROS) || defined(KERBEROS5) 482 if (!quietlog && notickets == 1) 483 (void)printf("Warning: no Kerberos tickets issued.\n"); 484 #endif 485 486 if (!quietlog) { 487 (void)printf("%s\n\t%s %s\n\n", 488 "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994", 489 "The Regents of the University of California. ", 490 "All rights reserved."); 491 motd(); 492 (void)snprintf(tbuf, 493 sizeof(tbuf), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 494 if (stat(tbuf, &st) == 0 && st.st_size != 0) 495 (void)printf("You have %smail.\n", 496 (st.st_mtime > st.st_atime) ? "new " : ""); 497 } 498 499 (void)signal(SIGALRM, SIG_DFL); 500 (void)signal(SIGQUIT, SIG_DFL); 501 (void)signal(SIGINT, SIG_DFL); 502 (void)signal(SIGTSTP, SIG_IGN); 503 504 tbuf[0] = '-'; 505 (void)strncpy(tbuf + 1, (p = strrchr(pwd->pw_shell, '/')) ? 506 p + 1 : pwd->pw_shell, sizeof(tbuf) - 2); 507 508 if (setlogin(pwd->pw_name) < 0) 509 syslog(LOG_ERR, "setlogin() failure: %m"); 510 511 /* Discard permissions last so can't get killed and drop core. */ 512 if (rootlogin) 513 (void)setuid(0); 514 else 515 (void)setuid(pwd->pw_uid); 516 517 /* Wait to change password until we're unprivileged */ 518 if (need_chpass) { 519 if (!require_chpass) 520 (void)printf( 521 "Warning: your password has expired. Please change it as soon as possible.\n"); 522 else { 523 (void)printf( 524 "Your password has expired. Please choose a new one.\n"); 525 if (system(_PATH_BINPASSWD) != 0) 526 sleepexit(1); 527 } 528 } 529 530 execlp(pwd->pw_shell, tbuf, 0); 531 err(1, "%s", pwd->pw_shell); 532 } 533 534 #if defined(KERBEROS) || defined(KERBEROS5) 535 #define NBUFSIZ (MAXLOGNAME + 1 + 5) /* .root suffix */ 536 #else 537 #define NBUFSIZ (MAXLOGNAME + 1) 538 #endif 539 540 #if defined(KERBEROS) || defined(KERBEROS5) 541 /* 542 * This routine handles cleanup stuff, and the like. 543 * It exists only in the child process. 544 */ 545 #include <sys/wait.h> 546 void 547 dofork() 548 { 549 int child; 550 551 if (!(child = fork())) 552 return; /* Child process */ 553 554 /* Setup stuff? This would be things we could do in parallel with login */ 555 (void) chdir("/"); /* Let's not keep the fs busy... */ 556 557 /* If we're the parent, watch the child until it dies */ 558 while (wait(0) != child) 559 ; 560 561 /* Cleanup stuff */ 562 /* Run kdestroy to destroy tickets */ 563 kdestroy(); 564 565 /* Leave */ 566 exit(0); 567 } 568 #endif 569 570 void 571 getloginname() 572 { 573 int ch; 574 char *p; 575 static char nbuf[NBUFSIZ]; 576 577 for (;;) { 578 (void)printf("login: "); 579 for (p = nbuf; (ch = getchar()) != '\n'; ) { 580 if (ch == EOF) { 581 badlogin(username); 582 exit(0); 583 } 584 if (p < nbuf + (NBUFSIZ - 1)) 585 *p++ = ch; 586 } 587 if (p > nbuf) 588 if (nbuf[0] == '-') 589 (void)fprintf(stderr, 590 "login names may not start with '-'.\n"); 591 else { 592 *p = '\0'; 593 username = nbuf; 594 break; 595 } 596 } 597 } 598 599 int 600 rootterm(ttyn) 601 char *ttyn; 602 { 603 struct ttyent *t; 604 605 return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE); 606 } 607 608 jmp_buf motdinterrupt; 609 610 void 611 motd() 612 { 613 int fd, nchars; 614 sig_t oldint; 615 char tbuf[8192]; 616 617 if ((fd = open(_PATH_MOTDFILE, O_RDONLY, 0)) < 0) 618 return; 619 oldint = signal(SIGINT, sigint); 620 if (setjmp(motdinterrupt) == 0) 621 while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) 622 (void)write(fileno(stdout), tbuf, nchars); 623 (void)signal(SIGINT, oldint); 624 (void)close(fd); 625 } 626 627 /* ARGSUSED */ 628 void 629 sigint(signo) 630 int signo; 631 { 632 longjmp(motdinterrupt, 1); 633 } 634 635 /* ARGSUSED */ 636 void 637 timedout(signo) 638 int signo; 639 { 640 (void)fprintf(stderr, "Login timed out after %d seconds\n", timeout); 641 exit(0); 642 } 643 644 void 645 checknologin() 646 { 647 int fd, nchars; 648 char tbuf[8192]; 649 650 if ((fd = open(_PATH_NOLOGIN, O_RDONLY, 0)) >= 0) { 651 while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) 652 (void)write(fileno(stdout), tbuf, nchars); 653 sleepexit(0); 654 } 655 } 656 657 void 658 dolastlog(quiet) 659 int quiet; 660 { 661 struct lastlog ll; 662 int fd; 663 664 if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) { 665 (void)lseek(fd, (off_t)(pwd->pw_uid * sizeof(ll)), SEEK_SET); 666 if (!quiet) { 667 if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) && 668 ll.ll_time != 0) { 669 (void)printf("Last login: %.*s ", 670 24-5, (char *)ctime(&ll.ll_time)); 671 if (*ll.ll_host != '\0') 672 (void)printf("from %.*s\n", 673 (int)sizeof(ll.ll_host), 674 ll.ll_host); 675 else 676 (void)printf("on %.*s\n", 677 (int)sizeof(ll.ll_line), 678 ll.ll_line); 679 } 680 (void)lseek(fd, (off_t)(pwd->pw_uid * sizeof(ll)), 681 SEEK_SET); 682 } 683 memset((void *)&ll, 0, sizeof(ll)); 684 (void)time(&ll.ll_time); 685 (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line)); 686 if (hostname) 687 (void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host)); 688 (void)write(fd, (char *)&ll, sizeof(ll)); 689 (void)close(fd); 690 } 691 } 692 693 void 694 badlogin(name) 695 char *name; 696 { 697 if (failures == 0) 698 return; 699 if (hostname) { 700 syslog(LOG_NOTICE, "%d LOGIN FAILURE%s FROM %s", 701 failures, failures > 1 ? "S" : "", hostname); 702 syslog(LOG_AUTHPRIV|LOG_NOTICE, 703 "%d LOGIN FAILURE%s FROM %s, %s", 704 failures, failures > 1 ? "S" : "", hostname, name); 705 } else { 706 syslog(LOG_NOTICE, "%d LOGIN FAILURE%s ON %s", 707 failures, failures > 1 ? "S" : "", tty); 708 syslog(LOG_AUTHPRIV|LOG_NOTICE, 709 "%d LOGIN FAILURE%s ON %s, %s", 710 failures, failures > 1 ? "S" : "", tty, name); 711 } 712 } 713 714 #undef UNKNOWN 715 #define UNKNOWN "su" 716 717 char * 718 stypeof(ttyid) 719 char *ttyid; 720 { 721 struct ttyent *t; 722 723 return (ttyid && (t = getttynam(ttyid)) ? t->ty_type : UNKNOWN); 724 } 725 726 void 727 sleepexit(eval) 728 int eval; 729 { 730 (void)sleep(5); 731 exit(eval); 732 } 733
Indexes created Wed Oct 01 07:09:59 GMT 2025