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1.13 ! millert 1: /* $OpenBSD: login.c,v 1.12 1996/11/09 07:43:22 millert Exp $ */
1.3 deraadt 2: /* $NetBSD: login.c,v 1.13 1996/05/15 23:50:16 jtc Exp $ */
1.1 deraadt 3:
4: /*-
5: * Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994
6: * The Regents of the University of California. All rights reserved.
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. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char 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
1.13 ! millert 47: static char rcsid[] = "$OpenBSD: login.c,v 1.12 1996/11/09 07:43:22 millert Exp $";
1.1 deraadt 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>
1.11 millert 61: #include <sys/wait.h>
1.1 deraadt 62:
63: #include <err.h>
64: #include <errno.h>
65: #include <grp.h>
66: #include <pwd.h>
67: #include <setjmp.h>
68: #include <signal.h>
69: #include <stdio.h>
70: #include <stdlib.h>
71: #include <string.h>
72: #include <syslog.h>
73: #include <ttyent.h>
74: #include <tzfile.h>
75: #include <unistd.h>
76: #include <utmp.h>
1.3 deraadt 77: #include <util.h>
1.1 deraadt 78:
79: #include "pathnames.h"
80:
81: void badlogin __P((char *));
82: void checknologin __P((void));
83: void dolastlog __P((int));
84: void getloginname __P((void));
85: void motd __P((void));
86: int rootterm __P((char *));
87: void sigint __P((int));
1.11 millert 88: void sighup __P((int));
1.1 deraadt 89: void sleepexit __P((int));
90: char *stypeof __P((char *));
91: void timedout __P((int));
92: int pwcheck __P((char *, char *, char *, char *));
93: #if defined(KERBEROS) || defined(KERBEROS5)
94: int klogin __P((struct passwd *, char *, char *, char *));
95: void kdestroy __P((void));
96: void dofork __P((void));
97: #endif
98:
99: extern void login __P((struct utmp *));
1.13 ! millert 100: extern int check_failedlogin __P((uid_t));
! 101: extern void log_failedlogin __P((uid_t, char *, char *));
1.1 deraadt 102:
103: #define TTYGRPNAME "tty" /* name of group to own ttys */
104:
105: /*
106: * This bounds the time given to login. Not a define so it can
107: * be patched on machines where it's too small.
108: */
109: u_int timeout = 300;
110:
111: #if defined(KERBEROS) || defined(KERBEROS5)
112: int notickets = 1;
113: char *instance;
114: char *krbtkfile_env;
115: int authok;
116: #endif
117:
118: struct passwd *pwd;
119: int failures;
1.12 millert 120: char term[64], *envinit[1], *hostname, *tty, *username = NULL;
1.1 deraadt 121:
122: int
123: main(argc, argv)
124: int argc;
125: char *argv[];
126: {
127: extern char **environ;
128: struct group *gr;
129: struct stat st;
130: struct timeval tp;
131: struct utmp utmp;
132: int ask, ch, cnt, fflag, hflag, pflag, quietlog, rootlogin, rval;
133: uid_t uid;
134: char *domain, *p, *salt, *ttyn;
135: char tbuf[MAXPATHLEN + 2], tname[sizeof(_PATH_TTY) + 10];
136: char localhost[MAXHOSTNAMELEN];
137:
138: (void)signal(SIGALRM, timedout);
139: (void)alarm(timeout);
140: (void)signal(SIGQUIT, SIG_IGN);
141: (void)signal(SIGINT, SIG_IGN);
1.11 millert 142: (void)signal(SIGHUP, sighup);
1.1 deraadt 143: (void)setpriority(PRIO_PROCESS, 0, 0);
144:
145: openlog("login", LOG_ODELAY, LOG_AUTH);
146:
147: /*
148: * -p is used by getty to tell login not to destroy the environment
149: * -f is used to skip a second login authentication
150: * -h is used by other servers to pass the name of the remote
151: * host to login so that it may be placed in utmp and wtmp
152: */
153: domain = NULL;
154: if (gethostname(localhost, sizeof(localhost)) < 0)
155: syslog(LOG_ERR, "couldn't get local hostname: %m");
156: else
157: domain = strchr(localhost, '.');
158:
159: fflag = hflag = pflag = 0;
160: uid = getuid();
161: while ((ch = getopt(argc, argv, "fh:p")) != EOF)
162: switch (ch) {
163: case 'f':
164: fflag = 1;
165: break;
166: case 'h':
167: if (uid)
168: errx(1, "-h option: %s", strerror(EPERM));
169: hflag = 1;
170: if (domain && (p = strchr(optarg, '.')) &&
171: strcasecmp(p, domain) == 0)
172: *p = 0;
173: hostname = optarg;
174: break;
175: case 'p':
176: pflag = 1;
177: break;
178: case '?':
179: default:
180: if (!uid)
181: syslog(LOG_ERR, "invalid flag %c", ch);
182: (void)fprintf(stderr,
183: "usage: login [-fp] [-h hostname] [username]\n");
184: exit(1);
185: }
186: argc -= optind;
187: argv += optind;
188:
189: if (*argv) {
190: username = *argv;
191: ask = 0;
192: } else
193: ask = 1;
194:
195: for (cnt = getdtablesize(); cnt > 2; cnt--)
196: (void)close(cnt);
197:
198: ttyn = ttyname(STDIN_FILENO);
199: if (ttyn == NULL || *ttyn == '\0') {
200: (void)snprintf(tname, sizeof(tname), "%s??", _PATH_TTY);
201: ttyn = tname;
202: }
1.12 millert 203: if ((tty = strrchr(ttyn, '/')))
1.1 deraadt 204: ++tty;
205: else
206: tty = ttyn;
207:
208: for (cnt = 0;; ask = 1) {
209: #if defined(KERBEROS) || defined(KERBEROS5)
210: kdestroy();
211: #endif
212: if (ask) {
213: fflag = 0;
214: getloginname();
215: }
216: rootlogin = 0;
217: #ifdef KERBEROS
218: if ((instance = strchr(username, '.')) != NULL) {
219: if (strncmp(instance, ".root", 5) == 0)
220: rootlogin = 1;
221: *instance++ = '\0';
222: } else
223: instance = "";
224: #endif
225: #ifdef KERBEROS5
226: if ((instance = strchr(username, '/')) != NULL) {
227: if (strncmp(instance, "/root", 5) == 0)
228: rootlogin = 1;
229: *instance++ = '\0';
230: } else
231: instance = "";
232: #endif
233: if (strlen(username) > UT_NAMESIZE)
234: username[UT_NAMESIZE] = '\0';
235:
236: /*
237: * Note if trying multiple user names; log failures for
238: * previous user name, but don't bother logging one failure
239: * for nonexistent name (mistyped username).
240: */
241: if (failures && strcmp(tbuf, username)) {
242: if (failures > (pwd ? 0 : 1))
243: badlogin(tbuf);
244: failures = 0;
245: }
246: (void)strcpy(tbuf, username);
247:
1.12 millert 248: if ((pwd = getpwnam(username)))
1.1 deraadt 249: salt = pwd->pw_passwd;
250: else
251: salt = "xx";
252:
253: /*
254: * if we have a valid account name, and it doesn't have a
255: * password, or the -f option was specified and the caller
256: * is root or the caller isn't changing their uid, don't
257: * authenticate.
258: */
259: if (pwd) {
260: if (pwd->pw_uid == 0)
261: rootlogin = 1;
262:
263: if (fflag && (uid == 0 || uid == pwd->pw_uid)) {
264: /* already authenticated */
265: break;
266: } else if (pwd->pw_passwd[0] == '\0') {
267: /* pretend password okay */
268: rval = 0;
269: goto ttycheck;
270: }
271: }
272:
273: fflag = 0;
274:
275: (void)setpriority(PRIO_PROCESS, 0, -4);
276:
277: p = getpass("Password:");
278:
279: if (pwd) {
280: #if defined(KERBEROS) || defined(KERBEROS5)
281: rval = klogin(pwd, instance, localhost, p);
282: if (rval != 0 && rootlogin && pwd->pw_uid != 0)
283: rootlogin = 0;
284: if (rval == 0)
285: authok = 1;
286: else if (rval == 1) {
287: if (pwd->pw_uid != 0)
288: rootlogin = 0;
289: rval = pwcheck(username, p, salt, pwd->pw_passwd);
290: }
291: #else
292: rval = pwcheck(username, p, salt, pwd->pw_passwd);
293: #endif
294: }
295: memset(p, 0, strlen(p));
296:
297: (void)setpriority(PRIO_PROCESS, 0, 0);
298:
299: ttycheck:
300: /*
301: * If trying to log in as root without Kerberos,
302: * but with insecure terminal, refuse the login attempt.
303: */
304: #if defined(KERBEROS) || defined(KERBEROS5)
305: if (authok == 0)
306: #endif
307: if (pwd && !rval && rootlogin && !rootterm(tty)) {
308: (void)fprintf(stderr,
309: "%s login refused on this terminal.\n",
310: pwd->pw_name);
311: if (hostname)
312: syslog(LOG_NOTICE,
313: "LOGIN %s REFUSED FROM %s ON TTY %s",
314: pwd->pw_name, hostname, tty);
315: else
316: syslog(LOG_NOTICE,
317: "LOGIN %s REFUSED ON TTY %s",
318: pwd->pw_name, tty);
319: continue;
320: }
321:
322: if (pwd && !rval)
323: break;
324:
325: (void)printf("Login incorrect\n");
326: failures++;
1.13 ! millert 327: if (pwd)
! 328: log_failedlogin(pwd->pw_uid, hostname, tty);
1.1 deraadt 329: /* we allow 10 tries, but after 3 we start backing off */
330: if (++cnt > 3) {
331: if (cnt >= 10) {
332: badlogin(username);
333: sleepexit(1);
334: }
335: sleep((u_int)((cnt - 3) * 5));
336: }
337: }
338:
339: /* committed to login -- turn off timeout */
340: (void)alarm((u_int)0);
341:
342: endpwent();
343:
344: /* if user not super-user, check for disabled logins */
345: if (!rootlogin)
346: checknologin();
347:
1.5 deraadt 348: setegid(pwd->pw_gid);
349: seteuid(pwd->pw_uid);
350:
1.1 deraadt 351: if (chdir(pwd->pw_dir) < 0) {
352: (void)printf("No home directory %s!\n", pwd->pw_dir);
353: if (chdir("/"))
354: exit(0);
355: pwd->pw_dir = "/";
356: (void)printf("Logging in with home = \"/\".\n");
357: }
358:
359: quietlog = access(_PATH_HUSHLOGIN, F_OK) == 0;
1.5 deraadt 360:
361: seteuid(0);
362: setegid(0); /* XXX use a saved gid instead? */
1.1 deraadt 363:
364: if (pwd->pw_change || pwd->pw_expire)
365: (void)gettimeofday(&tp, (struct timezone *)NULL);
366: if (pwd->pw_change)
367: if (tp.tv_sec >= pwd->pw_change) {
368: (void)printf("Sorry -- your password has expired.\n");
369: sleepexit(1);
370: } else if (pwd->pw_change - tp.tv_sec <
371: 2 * DAYSPERWEEK * SECSPERDAY && !quietlog)
372: (void)printf("Warning: your password expires on %s",
373: ctime(&pwd->pw_change));
374: if (pwd->pw_expire)
375: if (tp.tv_sec >= pwd->pw_expire) {
376: (void)printf("Sorry -- your account has expired.\n");
377: sleepexit(1);
378: } else if (pwd->pw_expire - tp.tv_sec <
379: 2 * DAYSPERWEEK * SECSPERDAY && !quietlog)
380: (void)printf("Warning: your account expires on %s",
381: ctime(&pwd->pw_expire));
382:
383: /* Nothing else left to fail -- really log in. */
1.11 millert 384: (void)signal(SIGHUP, SIG_DFL);
1.1 deraadt 385: memset((void *)&utmp, 0, sizeof(utmp));
386: (void)time(&utmp.ut_time);
387: (void)strncpy(utmp.ut_name, username, sizeof(utmp.ut_name));
388: if (hostname)
389: (void)strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host));
390: (void)strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line));
391: login(&utmp);
392:
1.13 ! millert 393: if (!quietlog)
! 394: (void)check_failedlogin(pwd->pw_uid);
1.1 deraadt 395: dolastlog(quietlog);
1.6 deraadt 396:
397: login_fbtab(tty, pwd->pw_uid, pwd->pw_gid);
1.1 deraadt 398:
399: (void)chown(ttyn, pwd->pw_uid,
400: (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid);
401: #if defined(KERBEROS) || defined(KERBEROS5)
402: /* Fork so that we can call kdestroy */
403: if (krbtkfile_env)
404: dofork();
405: #endif
406: (void)setgid(pwd->pw_gid);
407:
408: initgroups(username, pwd->pw_gid);
409:
410: if (*pwd->pw_shell == '\0')
411: pwd->pw_shell = _PATH_BSHELL;
412:
413: /* Destroy environment unless user has requested its preservation. */
414: if (!pflag)
415: environ = envinit;
1.9 millert 416: else {
417: char **cpp, **cpp2;
418:
419: for (cpp2 = cpp = environ; *cpp; cpp++) {
420: if (strncmp(*cpp, "LD_", 3) &&
421: strncmp(*cpp, "IFS=", 4))
422: *cpp2++ = *cpp;
423: }
424: *cpp2 = 0;
425: }
1.1 deraadt 426: (void)setenv("HOME", pwd->pw_dir, 1);
427: (void)setenv("SHELL", pwd->pw_shell, 1);
428: if (term[0] == '\0')
429: (void)strncpy(term, stypeof(tty), sizeof(term));
430: (void)setenv("TERM", term, 0);
431: (void)setenv("LOGNAME", pwd->pw_name, 1);
432: (void)setenv("USER", pwd->pw_name, 1);
433: (void)setenv("PATH", _PATH_DEFPATH, 0);
434: #ifdef KERBEROS
435: if (krbtkfile_env)
436: (void)setenv("KRBTKFILE", krbtkfile_env, 1);
437: #endif
438: #ifdef KERBEROS5
439: if (krbtkfile_env)
440: (void)setenv("KRB5CCNAME", krbtkfile_env, 1);
441: #endif
442:
443: /* If fflag is on, assume caller/authenticator has logged root login. */
444: if (rootlogin && fflag == 0)
445: if (hostname)
446: syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s FROM %s",
447: username, tty, hostname);
448: else
449: syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s", username, tty);
450:
451: #if defined(KERBEROS) || defined(KERBEROS5)
452: if (!quietlog && notickets == 1)
453: (void)printf("Warning: no Kerberos tickets issued.\n");
454: #endif
455:
456: if (!quietlog) {
1.2 deraadt 457: #if 0
1.1 deraadt 458: (void)printf("%s\n\t%s %s\n\n",
459: "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994",
460: "The Regents of the University of California. ",
461: "All rights reserved.");
1.2 deraadt 462: #endif
1.1 deraadt 463: motd();
464: (void)snprintf(tbuf,
465: sizeof(tbuf), "%s/%s", _PATH_MAILDIR, pwd->pw_name);
466: if (stat(tbuf, &st) == 0 && st.st_size != 0)
467: (void)printf("You have %smail.\n",
468: (st.st_mtime > st.st_atime) ? "new " : "");
469: }
470:
471: (void)signal(SIGALRM, SIG_DFL);
472: (void)signal(SIGQUIT, SIG_DFL);
473: (void)signal(SIGINT, SIG_DFL);
474: (void)signal(SIGTSTP, SIG_IGN);
475:
476: tbuf[0] = '-';
477: (void)strcpy(tbuf + 1, (p = strrchr(pwd->pw_shell, '/')) ?
478: p + 1 : pwd->pw_shell);
479:
480: if (setlogin(pwd->pw_name) < 0)
481: syslog(LOG_ERR, "setlogin() failure: %m");
482:
483: /* Discard permissions last so can't get killed and drop core. */
484: if (rootlogin)
485: (void) setuid(0);
486: else
487: (void) setuid(pwd->pw_uid);
488:
489: execlp(pwd->pw_shell, tbuf, 0);
490: err(1, "%s", pwd->pw_shell);
491: }
492:
493: int
494: pwcheck(user, p, salt, passwd)
495: char *user, *p, *salt, *passwd;
496: {
497: #ifdef SKEY
1.8 millert 498: if (strcasecmp(p, "s/key") == 0)
1.7 deraadt 499: return skey_authenticate(user);
1.1 deraadt 500: #endif
501: return strcmp(crypt(p, salt), passwd);
502: }
503:
504: #if defined(KERBEROS) || defined(KERBEROS5)
505: #define NBUFSIZ (UT_NAMESIZE + 1 + 5) /* .root suffix */
506: #else
507: #define NBUFSIZ (UT_NAMESIZE + 1)
508: #endif
509:
510: #if defined(KERBEROS) || defined(KERBEROS5)
511: /*
512: * This routine handles cleanup stuff, and the like.
513: * It exists only in the child process.
514: */
515: #include <sys/wait.h>
516: void
517: dofork()
518: {
519: int child;
520:
521: if (!(child = fork()))
522: return; /* Child process */
523:
524: /* Setup stuff? This would be things we could do in parallel with login */
525: (void) chdir("/"); /* Let's not keep the fs busy... */
526:
527: /* If we're the parent, watch the child until it dies */
528: while (wait(0) != child)
529: ;
530:
531: /* Cleanup stuff */
532: /* Run kdestroy to destroy tickets */
533: kdestroy();
534:
535: /* Leave */
536: exit(0);
537: }
538: #endif
539:
540: void
541: getloginname()
542: {
543: int ch;
544: char *p;
545: static char nbuf[NBUFSIZ];
546:
547: for (;;) {
548: (void)printf("login: ");
549: for (p = nbuf; (ch = getchar()) != '\n'; ) {
550: if (ch == EOF) {
551: badlogin(username);
552: exit(0);
553: }
554: if (p < nbuf + (NBUFSIZ - 1))
555: *p++ = ch;
556: }
557: if (p > nbuf)
558: if (nbuf[0] == '-')
559: (void)fprintf(stderr,
560: "login names may not start with '-'.\n");
561: else {
562: *p = '\0';
563: username = nbuf;
564: break;
565: }
566: }
567: }
568:
569: int
570: rootterm(ttyn)
571: char *ttyn;
572: {
573: struct ttyent *t;
574:
575: return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE);
576: }
577:
578: jmp_buf motdinterrupt;
579:
580: void
581: motd()
582: {
583: int fd, nchars;
584: sig_t oldint;
585: char tbuf[8192];
586:
587: if ((fd = open(_PATH_MOTDFILE, O_RDONLY, 0)) < 0)
588: return;
589: oldint = signal(SIGINT, sigint);
590: if (setjmp(motdinterrupt) == 0)
591: while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0)
592: (void)write(fileno(stdout), tbuf, nchars);
593: (void)signal(SIGINT, oldint);
594: (void)close(fd);
595: }
596:
597: /* ARGSUSED */
598: void
599: sigint(signo)
600: int signo;
601: {
602: longjmp(motdinterrupt, 1);
603: }
604:
605: /* ARGSUSED */
606: void
607: timedout(signo)
608: int signo;
609: {
610: (void)fprintf(stderr, "Login timed out after %d seconds\n", timeout);
611: exit(0);
612: }
613:
614: void
615: checknologin()
616: {
617: int fd, nchars;
618: char tbuf[8192];
619:
620: if ((fd = open(_PATH_NOLOGIN, O_RDONLY, 0)) >= 0) {
621: while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0)
622: (void)write(fileno(stdout), tbuf, nchars);
623: sleepexit(0);
624: }
625: }
626:
627: void
628: dolastlog(quiet)
629: int quiet;
630: {
631: struct lastlog ll;
632: int fd;
633:
634: if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) {
635: (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
636: if (!quiet) {
637: if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) &&
638: ll.ll_time != 0) {
639: (void)printf("Last login: %.*s ",
640: 24-5, (char *)ctime(&ll.ll_time));
641: if (*ll.ll_host != '\0')
642: (void)printf("from %.*s\n",
643: (int)sizeof(ll.ll_host),
644: ll.ll_host);
645: else
646: (void)printf("on %.*s\n",
647: (int)sizeof(ll.ll_line),
648: ll.ll_line);
649: }
650: (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
651: }
652: memset((void *)&ll, 0, sizeof(ll));
653: (void)time(&ll.ll_time);
654: (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
655: if (hostname)
656: (void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host));
657: (void)write(fd, (char *)&ll, sizeof(ll));
658: (void)close(fd);
659: }
660: }
661:
662: void
663: badlogin(name)
664: char *name;
665: {
666: if (failures == 0)
667: return;
668: if (hostname) {
669: syslog(LOG_NOTICE, "%d LOGIN FAILURE%s FROM %s",
670: failures, failures > 1 ? "S" : "", hostname);
671: syslog(LOG_AUTHPRIV|LOG_NOTICE,
672: "%d LOGIN FAILURE%s FROM %s, %s",
673: failures, failures > 1 ? "S" : "", hostname, name);
674: } else {
675: syslog(LOG_NOTICE, "%d LOGIN FAILURE%s ON %s",
676: failures, failures > 1 ? "S" : "", tty);
677: syslog(LOG_AUTHPRIV|LOG_NOTICE,
678: "%d LOGIN FAILURE%s ON %s, %s",
679: failures, failures > 1 ? "S" : "", tty, name);
680: }
681: }
682:
683: #undef UNKNOWN
684: #define UNKNOWN "su"
685:
686: char *
687: stypeof(ttyid)
688: char *ttyid;
689: {
690: struct ttyent *t;
691:
692: return (ttyid && (t = getttynam(ttyid)) ? t->ty_type : UNKNOWN);
693: }
694:
695: void
696: sleepexit(eval)
697: int eval;
698: {
699: (void)sleep(5);
700: exit(eval);
1.11 millert 701: }
702:
703: void
704: sighup(signum)
705: int signum;
706: {
707: if (username)
708: badlogin(username);
709:
710: exit(W_EXITCODE(0, signum));
1.1 deraadt 711: }